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252b5132 | 1 | /* 32-bit ELF support for ARM |
82704155 | 2 | Copyright (C) 1998-2019 Free Software Foundation, Inc. |
252b5132 RH |
3 | |
4 | This file is part of BFD, the Binary File Descriptor library. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 8 | the Free Software Foundation; either version 3 of the License, or |
252b5132 RH |
9 | (at your option) any later version. |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
19 | MA 02110-1301, USA. */ | |
252b5132 | 20 | |
6e6718a3 | 21 | #include "sysdep.h" |
2468f9c9 PB |
22 | #include <limits.h> |
23 | ||
3db64b00 | 24 | #include "bfd.h" |
00a97672 | 25 | #include "libiberty.h" |
7f266840 DJ |
26 | #include "libbfd.h" |
27 | #include "elf-bfd.h" | |
b38cadfb | 28 | #include "elf-nacl.h" |
00a97672 | 29 | #include "elf-vxworks.h" |
ee065d83 | 30 | #include "elf/arm.h" |
7f266840 | 31 | |
00a97672 RS |
32 | /* Return the relocation section associated with NAME. HTAB is the |
33 | bfd's elf32_arm_link_hash_entry. */ | |
34 | #define RELOC_SECTION(HTAB, NAME) \ | |
35 | ((HTAB)->use_rel ? ".rel" NAME : ".rela" NAME) | |
36 | ||
37 | /* Return size of a relocation entry. HTAB is the bfd's | |
38 | elf32_arm_link_hash_entry. */ | |
39 | #define RELOC_SIZE(HTAB) \ | |
40 | ((HTAB)->use_rel \ | |
41 | ? sizeof (Elf32_External_Rel) \ | |
42 | : sizeof (Elf32_External_Rela)) | |
43 | ||
44 | /* Return function to swap relocations in. HTAB is the bfd's | |
45 | elf32_arm_link_hash_entry. */ | |
46 | #define SWAP_RELOC_IN(HTAB) \ | |
47 | ((HTAB)->use_rel \ | |
48 | ? bfd_elf32_swap_reloc_in \ | |
49 | : bfd_elf32_swap_reloca_in) | |
50 | ||
51 | /* Return function to swap relocations out. HTAB is the bfd's | |
52 | elf32_arm_link_hash_entry. */ | |
53 | #define SWAP_RELOC_OUT(HTAB) \ | |
54 | ((HTAB)->use_rel \ | |
55 | ? bfd_elf32_swap_reloc_out \ | |
56 | : bfd_elf32_swap_reloca_out) | |
57 | ||
f3185997 | 58 | #define elf_info_to_howto NULL |
07d6d2b8 | 59 | #define elf_info_to_howto_rel elf32_arm_info_to_howto |
7f266840 DJ |
60 | |
61 | #define ARM_ELF_ABI_VERSION 0 | |
62 | #define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM | |
63 | ||
79f08007 YZ |
64 | /* The Adjusted Place, as defined by AAELF. */ |
65 | #define Pa(X) ((X) & 0xfffffffc) | |
66 | ||
3e6b1042 DJ |
67 | static bfd_boolean elf32_arm_write_section (bfd *output_bfd, |
68 | struct bfd_link_info *link_info, | |
69 | asection *sec, | |
70 | bfd_byte *contents); | |
71 | ||
7f266840 DJ |
72 | /* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g. |
73 | R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO | |
74 | in that slot. */ | |
75 | ||
c19d1205 | 76 | static reloc_howto_type elf32_arm_howto_table_1[] = |
7f266840 | 77 | { |
8029a119 | 78 | /* No relocation. */ |
7f266840 DJ |
79 | HOWTO (R_ARM_NONE, /* type */ |
80 | 0, /* rightshift */ | |
6346d5ca | 81 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
7f266840 DJ |
82 | 0, /* bitsize */ |
83 | FALSE, /* pc_relative */ | |
84 | 0, /* bitpos */ | |
85 | complain_overflow_dont,/* complain_on_overflow */ | |
86 | bfd_elf_generic_reloc, /* special_function */ | |
87 | "R_ARM_NONE", /* name */ | |
88 | FALSE, /* partial_inplace */ | |
89 | 0, /* src_mask */ | |
90 | 0, /* dst_mask */ | |
91 | FALSE), /* pcrel_offset */ | |
92 | ||
93 | HOWTO (R_ARM_PC24, /* type */ | |
94 | 2, /* rightshift */ | |
95 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
96 | 24, /* bitsize */ | |
97 | TRUE, /* pc_relative */ | |
98 | 0, /* bitpos */ | |
99 | complain_overflow_signed,/* complain_on_overflow */ | |
100 | bfd_elf_generic_reloc, /* special_function */ | |
101 | "R_ARM_PC24", /* name */ | |
102 | FALSE, /* partial_inplace */ | |
103 | 0x00ffffff, /* src_mask */ | |
104 | 0x00ffffff, /* dst_mask */ | |
105 | TRUE), /* pcrel_offset */ | |
106 | ||
107 | /* 32 bit absolute */ | |
108 | HOWTO (R_ARM_ABS32, /* type */ | |
109 | 0, /* rightshift */ | |
110 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
111 | 32, /* bitsize */ | |
112 | FALSE, /* pc_relative */ | |
113 | 0, /* bitpos */ | |
114 | complain_overflow_bitfield,/* complain_on_overflow */ | |
115 | bfd_elf_generic_reloc, /* special_function */ | |
116 | "R_ARM_ABS32", /* name */ | |
117 | FALSE, /* partial_inplace */ | |
118 | 0xffffffff, /* src_mask */ | |
119 | 0xffffffff, /* dst_mask */ | |
120 | FALSE), /* pcrel_offset */ | |
121 | ||
122 | /* standard 32bit pc-relative reloc */ | |
123 | HOWTO (R_ARM_REL32, /* type */ | |
124 | 0, /* rightshift */ | |
125 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
126 | 32, /* bitsize */ | |
127 | TRUE, /* pc_relative */ | |
128 | 0, /* bitpos */ | |
129 | complain_overflow_bitfield,/* complain_on_overflow */ | |
130 | bfd_elf_generic_reloc, /* special_function */ | |
131 | "R_ARM_REL32", /* name */ | |
132 | FALSE, /* partial_inplace */ | |
133 | 0xffffffff, /* src_mask */ | |
134 | 0xffffffff, /* dst_mask */ | |
135 | TRUE), /* pcrel_offset */ | |
136 | ||
c19d1205 | 137 | /* 8 bit absolute - R_ARM_LDR_PC_G0 in AAELF */ |
4962c51a | 138 | HOWTO (R_ARM_LDR_PC_G0, /* type */ |
7f266840 DJ |
139 | 0, /* rightshift */ |
140 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
4962c51a MS |
141 | 32, /* bitsize */ |
142 | TRUE, /* pc_relative */ | |
7f266840 | 143 | 0, /* bitpos */ |
4962c51a | 144 | complain_overflow_dont,/* complain_on_overflow */ |
7f266840 | 145 | bfd_elf_generic_reloc, /* special_function */ |
4962c51a | 146 | "R_ARM_LDR_PC_G0", /* name */ |
7f266840 | 147 | FALSE, /* partial_inplace */ |
4962c51a MS |
148 | 0xffffffff, /* src_mask */ |
149 | 0xffffffff, /* dst_mask */ | |
150 | TRUE), /* pcrel_offset */ | |
7f266840 DJ |
151 | |
152 | /* 16 bit absolute */ | |
153 | HOWTO (R_ARM_ABS16, /* type */ | |
154 | 0, /* rightshift */ | |
155 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
156 | 16, /* bitsize */ | |
157 | FALSE, /* pc_relative */ | |
158 | 0, /* bitpos */ | |
159 | complain_overflow_bitfield,/* complain_on_overflow */ | |
160 | bfd_elf_generic_reloc, /* special_function */ | |
161 | "R_ARM_ABS16", /* name */ | |
162 | FALSE, /* partial_inplace */ | |
163 | 0x0000ffff, /* src_mask */ | |
164 | 0x0000ffff, /* dst_mask */ | |
165 | FALSE), /* pcrel_offset */ | |
166 | ||
167 | /* 12 bit absolute */ | |
168 | HOWTO (R_ARM_ABS12, /* type */ | |
169 | 0, /* rightshift */ | |
170 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
171 | 12, /* bitsize */ | |
172 | FALSE, /* pc_relative */ | |
173 | 0, /* bitpos */ | |
174 | complain_overflow_bitfield,/* complain_on_overflow */ | |
175 | bfd_elf_generic_reloc, /* special_function */ | |
176 | "R_ARM_ABS12", /* name */ | |
177 | FALSE, /* partial_inplace */ | |
00a97672 RS |
178 | 0x00000fff, /* src_mask */ |
179 | 0x00000fff, /* dst_mask */ | |
7f266840 DJ |
180 | FALSE), /* pcrel_offset */ |
181 | ||
182 | HOWTO (R_ARM_THM_ABS5, /* type */ | |
183 | 6, /* rightshift */ | |
184 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
185 | 5, /* bitsize */ | |
186 | FALSE, /* pc_relative */ | |
187 | 0, /* bitpos */ | |
188 | complain_overflow_bitfield,/* complain_on_overflow */ | |
189 | bfd_elf_generic_reloc, /* special_function */ | |
190 | "R_ARM_THM_ABS5", /* name */ | |
191 | FALSE, /* partial_inplace */ | |
192 | 0x000007e0, /* src_mask */ | |
193 | 0x000007e0, /* dst_mask */ | |
194 | FALSE), /* pcrel_offset */ | |
195 | ||
196 | /* 8 bit absolute */ | |
197 | HOWTO (R_ARM_ABS8, /* type */ | |
198 | 0, /* rightshift */ | |
199 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
200 | 8, /* bitsize */ | |
201 | FALSE, /* pc_relative */ | |
202 | 0, /* bitpos */ | |
203 | complain_overflow_bitfield,/* complain_on_overflow */ | |
204 | bfd_elf_generic_reloc, /* special_function */ | |
205 | "R_ARM_ABS8", /* name */ | |
206 | FALSE, /* partial_inplace */ | |
207 | 0x000000ff, /* src_mask */ | |
208 | 0x000000ff, /* dst_mask */ | |
209 | FALSE), /* pcrel_offset */ | |
210 | ||
211 | HOWTO (R_ARM_SBREL32, /* type */ | |
212 | 0, /* rightshift */ | |
213 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
214 | 32, /* bitsize */ | |
215 | FALSE, /* pc_relative */ | |
216 | 0, /* bitpos */ | |
217 | complain_overflow_dont,/* complain_on_overflow */ | |
218 | bfd_elf_generic_reloc, /* special_function */ | |
219 | "R_ARM_SBREL32", /* name */ | |
220 | FALSE, /* partial_inplace */ | |
221 | 0xffffffff, /* src_mask */ | |
222 | 0xffffffff, /* dst_mask */ | |
223 | FALSE), /* pcrel_offset */ | |
224 | ||
c19d1205 | 225 | HOWTO (R_ARM_THM_CALL, /* type */ |
7f266840 DJ |
226 | 1, /* rightshift */ |
227 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
f6ebfac0 | 228 | 24, /* bitsize */ |
7f266840 DJ |
229 | TRUE, /* pc_relative */ |
230 | 0, /* bitpos */ | |
231 | complain_overflow_signed,/* complain_on_overflow */ | |
232 | bfd_elf_generic_reloc, /* special_function */ | |
c19d1205 | 233 | "R_ARM_THM_CALL", /* name */ |
7f266840 | 234 | FALSE, /* partial_inplace */ |
7f6ab9f8 AM |
235 | 0x07ff2fff, /* src_mask */ |
236 | 0x07ff2fff, /* dst_mask */ | |
7f266840 DJ |
237 | TRUE), /* pcrel_offset */ |
238 | ||
07d6d2b8 | 239 | HOWTO (R_ARM_THM_PC8, /* type */ |
7f266840 DJ |
240 | 1, /* rightshift */ |
241 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
242 | 8, /* bitsize */ | |
243 | TRUE, /* pc_relative */ | |
244 | 0, /* bitpos */ | |
245 | complain_overflow_signed,/* complain_on_overflow */ | |
246 | bfd_elf_generic_reloc, /* special_function */ | |
247 | "R_ARM_THM_PC8", /* name */ | |
248 | FALSE, /* partial_inplace */ | |
249 | 0x000000ff, /* src_mask */ | |
250 | 0x000000ff, /* dst_mask */ | |
251 | TRUE), /* pcrel_offset */ | |
252 | ||
c19d1205 | 253 | HOWTO (R_ARM_BREL_ADJ, /* type */ |
7f266840 DJ |
254 | 1, /* rightshift */ |
255 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
c19d1205 ZW |
256 | 32, /* bitsize */ |
257 | FALSE, /* pc_relative */ | |
7f266840 DJ |
258 | 0, /* bitpos */ |
259 | complain_overflow_signed,/* complain_on_overflow */ | |
260 | bfd_elf_generic_reloc, /* special_function */ | |
c19d1205 | 261 | "R_ARM_BREL_ADJ", /* name */ |
7f266840 | 262 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
263 | 0xffffffff, /* src_mask */ |
264 | 0xffffffff, /* dst_mask */ | |
265 | FALSE), /* pcrel_offset */ | |
7f266840 | 266 | |
0855e32b | 267 | HOWTO (R_ARM_TLS_DESC, /* type */ |
7f266840 | 268 | 0, /* rightshift */ |
0855e32b NS |
269 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
270 | 32, /* bitsize */ | |
7f266840 DJ |
271 | FALSE, /* pc_relative */ |
272 | 0, /* bitpos */ | |
0855e32b | 273 | complain_overflow_bitfield,/* complain_on_overflow */ |
7f266840 | 274 | bfd_elf_generic_reloc, /* special_function */ |
0855e32b | 275 | "R_ARM_TLS_DESC", /* name */ |
7f266840 | 276 | FALSE, /* partial_inplace */ |
0855e32b NS |
277 | 0xffffffff, /* src_mask */ |
278 | 0xffffffff, /* dst_mask */ | |
7f266840 DJ |
279 | FALSE), /* pcrel_offset */ |
280 | ||
281 | HOWTO (R_ARM_THM_SWI8, /* type */ | |
282 | 0, /* rightshift */ | |
283 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
284 | 0, /* bitsize */ | |
285 | FALSE, /* pc_relative */ | |
286 | 0, /* bitpos */ | |
287 | complain_overflow_signed,/* complain_on_overflow */ | |
288 | bfd_elf_generic_reloc, /* special_function */ | |
289 | "R_ARM_SWI8", /* name */ | |
290 | FALSE, /* partial_inplace */ | |
291 | 0x00000000, /* src_mask */ | |
292 | 0x00000000, /* dst_mask */ | |
293 | FALSE), /* pcrel_offset */ | |
294 | ||
295 | /* BLX instruction for the ARM. */ | |
296 | HOWTO (R_ARM_XPC25, /* type */ | |
297 | 2, /* rightshift */ | |
298 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
7f6ab9f8 | 299 | 24, /* bitsize */ |
7f266840 DJ |
300 | TRUE, /* pc_relative */ |
301 | 0, /* bitpos */ | |
302 | complain_overflow_signed,/* complain_on_overflow */ | |
303 | bfd_elf_generic_reloc, /* special_function */ | |
304 | "R_ARM_XPC25", /* name */ | |
305 | FALSE, /* partial_inplace */ | |
306 | 0x00ffffff, /* src_mask */ | |
307 | 0x00ffffff, /* dst_mask */ | |
308 | TRUE), /* pcrel_offset */ | |
309 | ||
310 | /* BLX instruction for the Thumb. */ | |
311 | HOWTO (R_ARM_THM_XPC22, /* type */ | |
312 | 2, /* rightshift */ | |
313 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
7f6ab9f8 | 314 | 24, /* bitsize */ |
7f266840 DJ |
315 | TRUE, /* pc_relative */ |
316 | 0, /* bitpos */ | |
317 | complain_overflow_signed,/* complain_on_overflow */ | |
318 | bfd_elf_generic_reloc, /* special_function */ | |
319 | "R_ARM_THM_XPC22", /* name */ | |
320 | FALSE, /* partial_inplace */ | |
7f6ab9f8 AM |
321 | 0x07ff2fff, /* src_mask */ |
322 | 0x07ff2fff, /* dst_mask */ | |
7f266840 DJ |
323 | TRUE), /* pcrel_offset */ |
324 | ||
ba93b8ac | 325 | /* Dynamic TLS relocations. */ |
7f266840 | 326 | |
ba93b8ac | 327 | HOWTO (R_ARM_TLS_DTPMOD32, /* type */ |
07d6d2b8 AM |
328 | 0, /* rightshift */ |
329 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
330 | 32, /* bitsize */ | |
331 | FALSE, /* pc_relative */ | |
332 | 0, /* bitpos */ | |
99059e56 RM |
333 | complain_overflow_bitfield,/* complain_on_overflow */ |
334 | bfd_elf_generic_reloc, /* special_function */ | |
335 | "R_ARM_TLS_DTPMOD32", /* name */ | |
336 | TRUE, /* partial_inplace */ | |
337 | 0xffffffff, /* src_mask */ | |
338 | 0xffffffff, /* dst_mask */ | |
07d6d2b8 | 339 | FALSE), /* pcrel_offset */ |
7f266840 | 340 | |
ba93b8ac | 341 | HOWTO (R_ARM_TLS_DTPOFF32, /* type */ |
07d6d2b8 AM |
342 | 0, /* rightshift */ |
343 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
344 | 32, /* bitsize */ | |
345 | FALSE, /* pc_relative */ | |
346 | 0, /* bitpos */ | |
99059e56 RM |
347 | complain_overflow_bitfield,/* complain_on_overflow */ |
348 | bfd_elf_generic_reloc, /* special_function */ | |
349 | "R_ARM_TLS_DTPOFF32", /* name */ | |
350 | TRUE, /* partial_inplace */ | |
351 | 0xffffffff, /* src_mask */ | |
352 | 0xffffffff, /* dst_mask */ | |
07d6d2b8 | 353 | FALSE), /* pcrel_offset */ |
7f266840 | 354 | |
ba93b8ac | 355 | HOWTO (R_ARM_TLS_TPOFF32, /* type */ |
07d6d2b8 AM |
356 | 0, /* rightshift */ |
357 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
358 | 32, /* bitsize */ | |
359 | FALSE, /* pc_relative */ | |
360 | 0, /* bitpos */ | |
99059e56 RM |
361 | complain_overflow_bitfield,/* complain_on_overflow */ |
362 | bfd_elf_generic_reloc, /* special_function */ | |
363 | "R_ARM_TLS_TPOFF32", /* name */ | |
364 | TRUE, /* partial_inplace */ | |
365 | 0xffffffff, /* src_mask */ | |
366 | 0xffffffff, /* dst_mask */ | |
07d6d2b8 | 367 | FALSE), /* pcrel_offset */ |
7f266840 DJ |
368 | |
369 | /* Relocs used in ARM Linux */ | |
370 | ||
371 | HOWTO (R_ARM_COPY, /* type */ | |
07d6d2b8 AM |
372 | 0, /* rightshift */ |
373 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
374 | 32, /* bitsize */ | |
375 | FALSE, /* pc_relative */ | |
376 | 0, /* bitpos */ | |
99059e56 RM |
377 | complain_overflow_bitfield,/* complain_on_overflow */ |
378 | bfd_elf_generic_reloc, /* special_function */ | |
379 | "R_ARM_COPY", /* name */ | |
380 | TRUE, /* partial_inplace */ | |
381 | 0xffffffff, /* src_mask */ | |
382 | 0xffffffff, /* dst_mask */ | |
07d6d2b8 | 383 | FALSE), /* pcrel_offset */ |
7f266840 DJ |
384 | |
385 | HOWTO (R_ARM_GLOB_DAT, /* type */ | |
07d6d2b8 AM |
386 | 0, /* rightshift */ |
387 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
388 | 32, /* bitsize */ | |
389 | FALSE, /* pc_relative */ | |
390 | 0, /* bitpos */ | |
99059e56 RM |
391 | complain_overflow_bitfield,/* complain_on_overflow */ |
392 | bfd_elf_generic_reloc, /* special_function */ | |
393 | "R_ARM_GLOB_DAT", /* name */ | |
394 | TRUE, /* partial_inplace */ | |
395 | 0xffffffff, /* src_mask */ | |
396 | 0xffffffff, /* dst_mask */ | |
07d6d2b8 | 397 | FALSE), /* pcrel_offset */ |
7f266840 DJ |
398 | |
399 | HOWTO (R_ARM_JUMP_SLOT, /* type */ | |
07d6d2b8 AM |
400 | 0, /* rightshift */ |
401 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
402 | 32, /* bitsize */ | |
403 | FALSE, /* pc_relative */ | |
404 | 0, /* bitpos */ | |
99059e56 RM |
405 | complain_overflow_bitfield,/* complain_on_overflow */ |
406 | bfd_elf_generic_reloc, /* special_function */ | |
407 | "R_ARM_JUMP_SLOT", /* name */ | |
408 | TRUE, /* partial_inplace */ | |
409 | 0xffffffff, /* src_mask */ | |
410 | 0xffffffff, /* dst_mask */ | |
07d6d2b8 | 411 | FALSE), /* pcrel_offset */ |
7f266840 DJ |
412 | |
413 | HOWTO (R_ARM_RELATIVE, /* type */ | |
07d6d2b8 AM |
414 | 0, /* rightshift */ |
415 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
416 | 32, /* bitsize */ | |
417 | FALSE, /* pc_relative */ | |
418 | 0, /* bitpos */ | |
99059e56 RM |
419 | complain_overflow_bitfield,/* complain_on_overflow */ |
420 | bfd_elf_generic_reloc, /* special_function */ | |
421 | "R_ARM_RELATIVE", /* name */ | |
422 | TRUE, /* partial_inplace */ | |
423 | 0xffffffff, /* src_mask */ | |
424 | 0xffffffff, /* dst_mask */ | |
07d6d2b8 | 425 | FALSE), /* pcrel_offset */ |
7f266840 | 426 | |
c19d1205 | 427 | HOWTO (R_ARM_GOTOFF32, /* type */ |
07d6d2b8 AM |
428 | 0, /* rightshift */ |
429 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
430 | 32, /* bitsize */ | |
431 | FALSE, /* pc_relative */ | |
432 | 0, /* bitpos */ | |
99059e56 RM |
433 | complain_overflow_bitfield,/* complain_on_overflow */ |
434 | bfd_elf_generic_reloc, /* special_function */ | |
435 | "R_ARM_GOTOFF32", /* name */ | |
436 | TRUE, /* partial_inplace */ | |
437 | 0xffffffff, /* src_mask */ | |
438 | 0xffffffff, /* dst_mask */ | |
07d6d2b8 | 439 | FALSE), /* pcrel_offset */ |
7f266840 DJ |
440 | |
441 | HOWTO (R_ARM_GOTPC, /* type */ | |
07d6d2b8 AM |
442 | 0, /* rightshift */ |
443 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
444 | 32, /* bitsize */ | |
99059e56 | 445 | TRUE, /* pc_relative */ |
07d6d2b8 | 446 | 0, /* bitpos */ |
99059e56 RM |
447 | complain_overflow_bitfield,/* complain_on_overflow */ |
448 | bfd_elf_generic_reloc, /* special_function */ | |
449 | "R_ARM_GOTPC", /* name */ | |
450 | TRUE, /* partial_inplace */ | |
451 | 0xffffffff, /* src_mask */ | |
452 | 0xffffffff, /* dst_mask */ | |
453 | TRUE), /* pcrel_offset */ | |
7f266840 DJ |
454 | |
455 | HOWTO (R_ARM_GOT32, /* type */ | |
07d6d2b8 AM |
456 | 0, /* rightshift */ |
457 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
458 | 32, /* bitsize */ | |
99059e56 | 459 | FALSE, /* pc_relative */ |
07d6d2b8 | 460 | 0, /* bitpos */ |
99059e56 RM |
461 | complain_overflow_bitfield,/* complain_on_overflow */ |
462 | bfd_elf_generic_reloc, /* special_function */ | |
463 | "R_ARM_GOT32", /* name */ | |
464 | TRUE, /* partial_inplace */ | |
465 | 0xffffffff, /* src_mask */ | |
466 | 0xffffffff, /* dst_mask */ | |
467 | FALSE), /* pcrel_offset */ | |
7f266840 DJ |
468 | |
469 | HOWTO (R_ARM_PLT32, /* type */ | |
07d6d2b8 AM |
470 | 2, /* rightshift */ |
471 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
472 | 24, /* bitsize */ | |
99059e56 | 473 | TRUE, /* pc_relative */ |
07d6d2b8 | 474 | 0, /* bitpos */ |
99059e56 RM |
475 | complain_overflow_bitfield,/* complain_on_overflow */ |
476 | bfd_elf_generic_reloc, /* special_function */ | |
477 | "R_ARM_PLT32", /* name */ | |
478 | FALSE, /* partial_inplace */ | |
479 | 0x00ffffff, /* src_mask */ | |
480 | 0x00ffffff, /* dst_mask */ | |
481 | TRUE), /* pcrel_offset */ | |
7f266840 DJ |
482 | |
483 | HOWTO (R_ARM_CALL, /* type */ | |
484 | 2, /* rightshift */ | |
485 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
486 | 24, /* bitsize */ | |
487 | TRUE, /* pc_relative */ | |
488 | 0, /* bitpos */ | |
489 | complain_overflow_signed,/* complain_on_overflow */ | |
490 | bfd_elf_generic_reloc, /* special_function */ | |
491 | "R_ARM_CALL", /* name */ | |
492 | FALSE, /* partial_inplace */ | |
493 | 0x00ffffff, /* src_mask */ | |
494 | 0x00ffffff, /* dst_mask */ | |
495 | TRUE), /* pcrel_offset */ | |
496 | ||
497 | HOWTO (R_ARM_JUMP24, /* type */ | |
498 | 2, /* rightshift */ | |
499 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
500 | 24, /* bitsize */ | |
501 | TRUE, /* pc_relative */ | |
502 | 0, /* bitpos */ | |
503 | complain_overflow_signed,/* complain_on_overflow */ | |
504 | bfd_elf_generic_reloc, /* special_function */ | |
505 | "R_ARM_JUMP24", /* name */ | |
506 | FALSE, /* partial_inplace */ | |
507 | 0x00ffffff, /* src_mask */ | |
508 | 0x00ffffff, /* dst_mask */ | |
509 | TRUE), /* pcrel_offset */ | |
510 | ||
c19d1205 ZW |
511 | HOWTO (R_ARM_THM_JUMP24, /* type */ |
512 | 1, /* rightshift */ | |
513 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
514 | 24, /* bitsize */ | |
515 | TRUE, /* pc_relative */ | |
7f266840 | 516 | 0, /* bitpos */ |
c19d1205 | 517 | complain_overflow_signed,/* complain_on_overflow */ |
7f266840 | 518 | bfd_elf_generic_reloc, /* special_function */ |
c19d1205 | 519 | "R_ARM_THM_JUMP24", /* name */ |
7f266840 | 520 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
521 | 0x07ff2fff, /* src_mask */ |
522 | 0x07ff2fff, /* dst_mask */ | |
523 | TRUE), /* pcrel_offset */ | |
7f266840 | 524 | |
c19d1205 | 525 | HOWTO (R_ARM_BASE_ABS, /* type */ |
7f266840 | 526 | 0, /* rightshift */ |
c19d1205 ZW |
527 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
528 | 32, /* bitsize */ | |
7f266840 DJ |
529 | FALSE, /* pc_relative */ |
530 | 0, /* bitpos */ | |
531 | complain_overflow_dont,/* complain_on_overflow */ | |
532 | bfd_elf_generic_reloc, /* special_function */ | |
c19d1205 | 533 | "R_ARM_BASE_ABS", /* name */ |
7f266840 | 534 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
535 | 0xffffffff, /* src_mask */ |
536 | 0xffffffff, /* dst_mask */ | |
7f266840 DJ |
537 | FALSE), /* pcrel_offset */ |
538 | ||
539 | HOWTO (R_ARM_ALU_PCREL7_0, /* type */ | |
540 | 0, /* rightshift */ | |
541 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
542 | 12, /* bitsize */ | |
543 | TRUE, /* pc_relative */ | |
544 | 0, /* bitpos */ | |
545 | complain_overflow_dont,/* complain_on_overflow */ | |
546 | bfd_elf_generic_reloc, /* special_function */ | |
547 | "R_ARM_ALU_PCREL_7_0", /* name */ | |
548 | FALSE, /* partial_inplace */ | |
549 | 0x00000fff, /* src_mask */ | |
550 | 0x00000fff, /* dst_mask */ | |
551 | TRUE), /* pcrel_offset */ | |
552 | ||
553 | HOWTO (R_ARM_ALU_PCREL15_8, /* type */ | |
554 | 0, /* rightshift */ | |
555 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
556 | 12, /* bitsize */ | |
557 | TRUE, /* pc_relative */ | |
558 | 8, /* bitpos */ | |
559 | complain_overflow_dont,/* complain_on_overflow */ | |
560 | bfd_elf_generic_reloc, /* special_function */ | |
561 | "R_ARM_ALU_PCREL_15_8",/* name */ | |
562 | FALSE, /* partial_inplace */ | |
563 | 0x00000fff, /* src_mask */ | |
564 | 0x00000fff, /* dst_mask */ | |
565 | TRUE), /* pcrel_offset */ | |
566 | ||
567 | HOWTO (R_ARM_ALU_PCREL23_15, /* type */ | |
568 | 0, /* rightshift */ | |
569 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
570 | 12, /* bitsize */ | |
571 | TRUE, /* pc_relative */ | |
572 | 16, /* bitpos */ | |
573 | complain_overflow_dont,/* complain_on_overflow */ | |
574 | bfd_elf_generic_reloc, /* special_function */ | |
575 | "R_ARM_ALU_PCREL_23_15",/* name */ | |
576 | FALSE, /* partial_inplace */ | |
577 | 0x00000fff, /* src_mask */ | |
578 | 0x00000fff, /* dst_mask */ | |
579 | TRUE), /* pcrel_offset */ | |
580 | ||
581 | HOWTO (R_ARM_LDR_SBREL_11_0, /* type */ | |
582 | 0, /* rightshift */ | |
583 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
584 | 12, /* bitsize */ | |
585 | FALSE, /* pc_relative */ | |
586 | 0, /* bitpos */ | |
587 | complain_overflow_dont,/* complain_on_overflow */ | |
588 | bfd_elf_generic_reloc, /* special_function */ | |
589 | "R_ARM_LDR_SBREL_11_0",/* name */ | |
590 | FALSE, /* partial_inplace */ | |
591 | 0x00000fff, /* src_mask */ | |
592 | 0x00000fff, /* dst_mask */ | |
593 | FALSE), /* pcrel_offset */ | |
594 | ||
595 | HOWTO (R_ARM_ALU_SBREL_19_12, /* type */ | |
596 | 0, /* rightshift */ | |
597 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
598 | 8, /* bitsize */ | |
599 | FALSE, /* pc_relative */ | |
600 | 12, /* bitpos */ | |
601 | complain_overflow_dont,/* complain_on_overflow */ | |
602 | bfd_elf_generic_reloc, /* special_function */ | |
603 | "R_ARM_ALU_SBREL_19_12",/* name */ | |
604 | FALSE, /* partial_inplace */ | |
605 | 0x000ff000, /* src_mask */ | |
606 | 0x000ff000, /* dst_mask */ | |
607 | FALSE), /* pcrel_offset */ | |
608 | ||
609 | HOWTO (R_ARM_ALU_SBREL_27_20, /* type */ | |
610 | 0, /* rightshift */ | |
611 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
612 | 8, /* bitsize */ | |
613 | FALSE, /* pc_relative */ | |
614 | 20, /* bitpos */ | |
615 | complain_overflow_dont,/* complain_on_overflow */ | |
616 | bfd_elf_generic_reloc, /* special_function */ | |
617 | "R_ARM_ALU_SBREL_27_20",/* name */ | |
618 | FALSE, /* partial_inplace */ | |
619 | 0x0ff00000, /* src_mask */ | |
620 | 0x0ff00000, /* dst_mask */ | |
621 | FALSE), /* pcrel_offset */ | |
622 | ||
623 | HOWTO (R_ARM_TARGET1, /* type */ | |
624 | 0, /* rightshift */ | |
625 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
626 | 32, /* bitsize */ | |
627 | FALSE, /* pc_relative */ | |
628 | 0, /* bitpos */ | |
629 | complain_overflow_dont,/* complain_on_overflow */ | |
630 | bfd_elf_generic_reloc, /* special_function */ | |
631 | "R_ARM_TARGET1", /* name */ | |
632 | FALSE, /* partial_inplace */ | |
633 | 0xffffffff, /* src_mask */ | |
634 | 0xffffffff, /* dst_mask */ | |
635 | FALSE), /* pcrel_offset */ | |
636 | ||
637 | HOWTO (R_ARM_ROSEGREL32, /* type */ | |
638 | 0, /* rightshift */ | |
639 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
640 | 32, /* bitsize */ | |
641 | FALSE, /* pc_relative */ | |
642 | 0, /* bitpos */ | |
643 | complain_overflow_dont,/* complain_on_overflow */ | |
644 | bfd_elf_generic_reloc, /* special_function */ | |
645 | "R_ARM_ROSEGREL32", /* name */ | |
646 | FALSE, /* partial_inplace */ | |
647 | 0xffffffff, /* src_mask */ | |
648 | 0xffffffff, /* dst_mask */ | |
649 | FALSE), /* pcrel_offset */ | |
650 | ||
651 | HOWTO (R_ARM_V4BX, /* type */ | |
652 | 0, /* rightshift */ | |
653 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
654 | 32, /* bitsize */ | |
655 | FALSE, /* pc_relative */ | |
656 | 0, /* bitpos */ | |
657 | complain_overflow_dont,/* complain_on_overflow */ | |
658 | bfd_elf_generic_reloc, /* special_function */ | |
659 | "R_ARM_V4BX", /* name */ | |
660 | FALSE, /* partial_inplace */ | |
661 | 0xffffffff, /* src_mask */ | |
662 | 0xffffffff, /* dst_mask */ | |
663 | FALSE), /* pcrel_offset */ | |
664 | ||
665 | HOWTO (R_ARM_TARGET2, /* type */ | |
666 | 0, /* rightshift */ | |
667 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
668 | 32, /* bitsize */ | |
669 | FALSE, /* pc_relative */ | |
670 | 0, /* bitpos */ | |
671 | complain_overflow_signed,/* complain_on_overflow */ | |
672 | bfd_elf_generic_reloc, /* special_function */ | |
673 | "R_ARM_TARGET2", /* name */ | |
674 | FALSE, /* partial_inplace */ | |
675 | 0xffffffff, /* src_mask */ | |
676 | 0xffffffff, /* dst_mask */ | |
677 | TRUE), /* pcrel_offset */ | |
678 | ||
679 | HOWTO (R_ARM_PREL31, /* type */ | |
680 | 0, /* rightshift */ | |
681 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
682 | 31, /* bitsize */ | |
683 | TRUE, /* pc_relative */ | |
684 | 0, /* bitpos */ | |
685 | complain_overflow_signed,/* complain_on_overflow */ | |
686 | bfd_elf_generic_reloc, /* special_function */ | |
687 | "R_ARM_PREL31", /* name */ | |
688 | FALSE, /* partial_inplace */ | |
689 | 0x7fffffff, /* src_mask */ | |
690 | 0x7fffffff, /* dst_mask */ | |
691 | TRUE), /* pcrel_offset */ | |
c19d1205 ZW |
692 | |
693 | HOWTO (R_ARM_MOVW_ABS_NC, /* type */ | |
694 | 0, /* rightshift */ | |
695 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
696 | 16, /* bitsize */ | |
697 | FALSE, /* pc_relative */ | |
698 | 0, /* bitpos */ | |
699 | complain_overflow_dont,/* complain_on_overflow */ | |
700 | bfd_elf_generic_reloc, /* special_function */ | |
701 | "R_ARM_MOVW_ABS_NC", /* name */ | |
702 | FALSE, /* partial_inplace */ | |
39623e12 PB |
703 | 0x000f0fff, /* src_mask */ |
704 | 0x000f0fff, /* dst_mask */ | |
c19d1205 ZW |
705 | FALSE), /* pcrel_offset */ |
706 | ||
707 | HOWTO (R_ARM_MOVT_ABS, /* type */ | |
708 | 0, /* rightshift */ | |
709 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
710 | 16, /* bitsize */ | |
711 | FALSE, /* pc_relative */ | |
712 | 0, /* bitpos */ | |
713 | complain_overflow_bitfield,/* complain_on_overflow */ | |
714 | bfd_elf_generic_reloc, /* special_function */ | |
715 | "R_ARM_MOVT_ABS", /* name */ | |
716 | FALSE, /* partial_inplace */ | |
39623e12 PB |
717 | 0x000f0fff, /* src_mask */ |
718 | 0x000f0fff, /* dst_mask */ | |
c19d1205 ZW |
719 | FALSE), /* pcrel_offset */ |
720 | ||
721 | HOWTO (R_ARM_MOVW_PREL_NC, /* type */ | |
722 | 0, /* rightshift */ | |
723 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
724 | 16, /* bitsize */ | |
725 | TRUE, /* pc_relative */ | |
726 | 0, /* bitpos */ | |
727 | complain_overflow_dont,/* complain_on_overflow */ | |
728 | bfd_elf_generic_reloc, /* special_function */ | |
729 | "R_ARM_MOVW_PREL_NC", /* name */ | |
730 | FALSE, /* partial_inplace */ | |
39623e12 PB |
731 | 0x000f0fff, /* src_mask */ |
732 | 0x000f0fff, /* dst_mask */ | |
c19d1205 ZW |
733 | TRUE), /* pcrel_offset */ |
734 | ||
735 | HOWTO (R_ARM_MOVT_PREL, /* type */ | |
736 | 0, /* rightshift */ | |
737 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
738 | 16, /* bitsize */ | |
739 | TRUE, /* pc_relative */ | |
740 | 0, /* bitpos */ | |
741 | complain_overflow_bitfield,/* complain_on_overflow */ | |
742 | bfd_elf_generic_reloc, /* special_function */ | |
743 | "R_ARM_MOVT_PREL", /* name */ | |
744 | FALSE, /* partial_inplace */ | |
39623e12 PB |
745 | 0x000f0fff, /* src_mask */ |
746 | 0x000f0fff, /* dst_mask */ | |
c19d1205 ZW |
747 | TRUE), /* pcrel_offset */ |
748 | ||
749 | HOWTO (R_ARM_THM_MOVW_ABS_NC, /* type */ | |
750 | 0, /* rightshift */ | |
751 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
752 | 16, /* bitsize */ | |
753 | FALSE, /* pc_relative */ | |
754 | 0, /* bitpos */ | |
755 | complain_overflow_dont,/* complain_on_overflow */ | |
756 | bfd_elf_generic_reloc, /* special_function */ | |
757 | "R_ARM_THM_MOVW_ABS_NC",/* name */ | |
758 | FALSE, /* partial_inplace */ | |
759 | 0x040f70ff, /* src_mask */ | |
760 | 0x040f70ff, /* dst_mask */ | |
761 | FALSE), /* pcrel_offset */ | |
762 | ||
763 | HOWTO (R_ARM_THM_MOVT_ABS, /* type */ | |
764 | 0, /* rightshift */ | |
765 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
766 | 16, /* bitsize */ | |
767 | FALSE, /* pc_relative */ | |
768 | 0, /* bitpos */ | |
769 | complain_overflow_bitfield,/* complain_on_overflow */ | |
770 | bfd_elf_generic_reloc, /* special_function */ | |
771 | "R_ARM_THM_MOVT_ABS", /* name */ | |
772 | FALSE, /* partial_inplace */ | |
773 | 0x040f70ff, /* src_mask */ | |
774 | 0x040f70ff, /* dst_mask */ | |
775 | FALSE), /* pcrel_offset */ | |
776 | ||
777 | HOWTO (R_ARM_THM_MOVW_PREL_NC,/* type */ | |
778 | 0, /* rightshift */ | |
779 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
780 | 16, /* bitsize */ | |
781 | TRUE, /* pc_relative */ | |
782 | 0, /* bitpos */ | |
783 | complain_overflow_dont,/* complain_on_overflow */ | |
784 | bfd_elf_generic_reloc, /* special_function */ | |
785 | "R_ARM_THM_MOVW_PREL_NC",/* name */ | |
786 | FALSE, /* partial_inplace */ | |
787 | 0x040f70ff, /* src_mask */ | |
788 | 0x040f70ff, /* dst_mask */ | |
789 | TRUE), /* pcrel_offset */ | |
790 | ||
791 | HOWTO (R_ARM_THM_MOVT_PREL, /* type */ | |
792 | 0, /* rightshift */ | |
793 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
794 | 16, /* bitsize */ | |
795 | TRUE, /* pc_relative */ | |
796 | 0, /* bitpos */ | |
797 | complain_overflow_bitfield,/* complain_on_overflow */ | |
798 | bfd_elf_generic_reloc, /* special_function */ | |
799 | "R_ARM_THM_MOVT_PREL", /* name */ | |
800 | FALSE, /* partial_inplace */ | |
801 | 0x040f70ff, /* src_mask */ | |
802 | 0x040f70ff, /* dst_mask */ | |
803 | TRUE), /* pcrel_offset */ | |
804 | ||
805 | HOWTO (R_ARM_THM_JUMP19, /* type */ | |
806 | 1, /* rightshift */ | |
807 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
808 | 19, /* bitsize */ | |
809 | TRUE, /* pc_relative */ | |
810 | 0, /* bitpos */ | |
811 | complain_overflow_signed,/* complain_on_overflow */ | |
812 | bfd_elf_generic_reloc, /* special_function */ | |
813 | "R_ARM_THM_JUMP19", /* name */ | |
814 | FALSE, /* partial_inplace */ | |
815 | 0x043f2fff, /* src_mask */ | |
816 | 0x043f2fff, /* dst_mask */ | |
817 | TRUE), /* pcrel_offset */ | |
818 | ||
819 | HOWTO (R_ARM_THM_JUMP6, /* type */ | |
820 | 1, /* rightshift */ | |
821 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
822 | 6, /* bitsize */ | |
823 | TRUE, /* pc_relative */ | |
824 | 0, /* bitpos */ | |
825 | complain_overflow_unsigned,/* complain_on_overflow */ | |
826 | bfd_elf_generic_reloc, /* special_function */ | |
827 | "R_ARM_THM_JUMP6", /* name */ | |
828 | FALSE, /* partial_inplace */ | |
829 | 0x02f8, /* src_mask */ | |
830 | 0x02f8, /* dst_mask */ | |
831 | TRUE), /* pcrel_offset */ | |
832 | ||
833 | /* These are declared as 13-bit signed relocations because we can | |
834 | address -4095 .. 4095(base) by altering ADDW to SUBW or vice | |
835 | versa. */ | |
836 | HOWTO (R_ARM_THM_ALU_PREL_11_0,/* type */ | |
837 | 0, /* rightshift */ | |
838 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
839 | 13, /* bitsize */ | |
840 | TRUE, /* pc_relative */ | |
841 | 0, /* bitpos */ | |
2cab6cc3 | 842 | complain_overflow_dont,/* complain_on_overflow */ |
c19d1205 ZW |
843 | bfd_elf_generic_reloc, /* special_function */ |
844 | "R_ARM_THM_ALU_PREL_11_0",/* name */ | |
845 | FALSE, /* partial_inplace */ | |
2cab6cc3 MS |
846 | 0xffffffff, /* src_mask */ |
847 | 0xffffffff, /* dst_mask */ | |
c19d1205 ZW |
848 | TRUE), /* pcrel_offset */ |
849 | ||
850 | HOWTO (R_ARM_THM_PC12, /* type */ | |
851 | 0, /* rightshift */ | |
852 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
853 | 13, /* bitsize */ | |
854 | TRUE, /* pc_relative */ | |
855 | 0, /* bitpos */ | |
2cab6cc3 | 856 | complain_overflow_dont,/* complain_on_overflow */ |
c19d1205 ZW |
857 | bfd_elf_generic_reloc, /* special_function */ |
858 | "R_ARM_THM_PC12", /* name */ | |
859 | FALSE, /* partial_inplace */ | |
2cab6cc3 MS |
860 | 0xffffffff, /* src_mask */ |
861 | 0xffffffff, /* dst_mask */ | |
c19d1205 ZW |
862 | TRUE), /* pcrel_offset */ |
863 | ||
864 | HOWTO (R_ARM_ABS32_NOI, /* type */ | |
865 | 0, /* rightshift */ | |
866 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
867 | 32, /* bitsize */ | |
868 | FALSE, /* pc_relative */ | |
869 | 0, /* bitpos */ | |
870 | complain_overflow_dont,/* complain_on_overflow */ | |
871 | bfd_elf_generic_reloc, /* special_function */ | |
872 | "R_ARM_ABS32_NOI", /* name */ | |
873 | FALSE, /* partial_inplace */ | |
874 | 0xffffffff, /* src_mask */ | |
875 | 0xffffffff, /* dst_mask */ | |
876 | FALSE), /* pcrel_offset */ | |
877 | ||
878 | HOWTO (R_ARM_REL32_NOI, /* type */ | |
879 | 0, /* rightshift */ | |
880 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
881 | 32, /* bitsize */ | |
882 | TRUE, /* pc_relative */ | |
883 | 0, /* bitpos */ | |
884 | complain_overflow_dont,/* complain_on_overflow */ | |
885 | bfd_elf_generic_reloc, /* special_function */ | |
886 | "R_ARM_REL32_NOI", /* name */ | |
887 | FALSE, /* partial_inplace */ | |
888 | 0xffffffff, /* src_mask */ | |
889 | 0xffffffff, /* dst_mask */ | |
890 | FALSE), /* pcrel_offset */ | |
7f266840 | 891 | |
4962c51a MS |
892 | /* Group relocations. */ |
893 | ||
894 | HOWTO (R_ARM_ALU_PC_G0_NC, /* type */ | |
895 | 0, /* rightshift */ | |
896 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
897 | 32, /* bitsize */ | |
898 | TRUE, /* pc_relative */ | |
899 | 0, /* bitpos */ | |
900 | complain_overflow_dont,/* complain_on_overflow */ | |
901 | bfd_elf_generic_reloc, /* special_function */ | |
902 | "R_ARM_ALU_PC_G0_NC", /* name */ | |
903 | FALSE, /* partial_inplace */ | |
904 | 0xffffffff, /* src_mask */ | |
905 | 0xffffffff, /* dst_mask */ | |
906 | TRUE), /* pcrel_offset */ | |
907 | ||
07d6d2b8 | 908 | HOWTO (R_ARM_ALU_PC_G0, /* type */ |
4962c51a MS |
909 | 0, /* rightshift */ |
910 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
911 | 32, /* bitsize */ | |
912 | TRUE, /* pc_relative */ | |
913 | 0, /* bitpos */ | |
914 | complain_overflow_dont,/* complain_on_overflow */ | |
915 | bfd_elf_generic_reloc, /* special_function */ | |
07d6d2b8 | 916 | "R_ARM_ALU_PC_G0", /* name */ |
4962c51a MS |
917 | FALSE, /* partial_inplace */ |
918 | 0xffffffff, /* src_mask */ | |
919 | 0xffffffff, /* dst_mask */ | |
920 | TRUE), /* pcrel_offset */ | |
921 | ||
922 | HOWTO (R_ARM_ALU_PC_G1_NC, /* type */ | |
923 | 0, /* rightshift */ | |
924 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
925 | 32, /* bitsize */ | |
926 | TRUE, /* pc_relative */ | |
927 | 0, /* bitpos */ | |
928 | complain_overflow_dont,/* complain_on_overflow */ | |
929 | bfd_elf_generic_reloc, /* special_function */ | |
930 | "R_ARM_ALU_PC_G1_NC", /* name */ | |
931 | FALSE, /* partial_inplace */ | |
932 | 0xffffffff, /* src_mask */ | |
933 | 0xffffffff, /* dst_mask */ | |
934 | TRUE), /* pcrel_offset */ | |
935 | ||
07d6d2b8 | 936 | HOWTO (R_ARM_ALU_PC_G1, /* type */ |
4962c51a MS |
937 | 0, /* rightshift */ |
938 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
939 | 32, /* bitsize */ | |
940 | TRUE, /* pc_relative */ | |
941 | 0, /* bitpos */ | |
942 | complain_overflow_dont,/* complain_on_overflow */ | |
943 | bfd_elf_generic_reloc, /* special_function */ | |
07d6d2b8 | 944 | "R_ARM_ALU_PC_G1", /* name */ |
4962c51a MS |
945 | FALSE, /* partial_inplace */ |
946 | 0xffffffff, /* src_mask */ | |
947 | 0xffffffff, /* dst_mask */ | |
948 | TRUE), /* pcrel_offset */ | |
949 | ||
07d6d2b8 | 950 | HOWTO (R_ARM_ALU_PC_G2, /* type */ |
4962c51a MS |
951 | 0, /* rightshift */ |
952 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
953 | 32, /* bitsize */ | |
954 | TRUE, /* pc_relative */ | |
955 | 0, /* bitpos */ | |
956 | complain_overflow_dont,/* complain_on_overflow */ | |
957 | bfd_elf_generic_reloc, /* special_function */ | |
07d6d2b8 | 958 | "R_ARM_ALU_PC_G2", /* name */ |
4962c51a MS |
959 | FALSE, /* partial_inplace */ |
960 | 0xffffffff, /* src_mask */ | |
961 | 0xffffffff, /* dst_mask */ | |
962 | TRUE), /* pcrel_offset */ | |
963 | ||
07d6d2b8 | 964 | HOWTO (R_ARM_LDR_PC_G1, /* type */ |
4962c51a MS |
965 | 0, /* rightshift */ |
966 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
967 | 32, /* bitsize */ | |
968 | TRUE, /* pc_relative */ | |
969 | 0, /* bitpos */ | |
970 | complain_overflow_dont,/* complain_on_overflow */ | |
971 | bfd_elf_generic_reloc, /* special_function */ | |
07d6d2b8 | 972 | "R_ARM_LDR_PC_G1", /* name */ |
4962c51a MS |
973 | FALSE, /* partial_inplace */ |
974 | 0xffffffff, /* src_mask */ | |
975 | 0xffffffff, /* dst_mask */ | |
976 | TRUE), /* pcrel_offset */ | |
977 | ||
07d6d2b8 | 978 | HOWTO (R_ARM_LDR_PC_G2, /* type */ |
4962c51a MS |
979 | 0, /* rightshift */ |
980 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
981 | 32, /* bitsize */ | |
982 | TRUE, /* pc_relative */ | |
983 | 0, /* bitpos */ | |
984 | complain_overflow_dont,/* complain_on_overflow */ | |
985 | bfd_elf_generic_reloc, /* special_function */ | |
07d6d2b8 | 986 | "R_ARM_LDR_PC_G2", /* name */ |
4962c51a MS |
987 | FALSE, /* partial_inplace */ |
988 | 0xffffffff, /* src_mask */ | |
989 | 0xffffffff, /* dst_mask */ | |
990 | TRUE), /* pcrel_offset */ | |
991 | ||
07d6d2b8 | 992 | HOWTO (R_ARM_LDRS_PC_G0, /* type */ |
4962c51a MS |
993 | 0, /* rightshift */ |
994 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
995 | 32, /* bitsize */ | |
996 | TRUE, /* pc_relative */ | |
997 | 0, /* bitpos */ | |
998 | complain_overflow_dont,/* complain_on_overflow */ | |
999 | bfd_elf_generic_reloc, /* special_function */ | |
07d6d2b8 | 1000 | "R_ARM_LDRS_PC_G0", /* name */ |
4962c51a MS |
1001 | FALSE, /* partial_inplace */ |
1002 | 0xffffffff, /* src_mask */ | |
1003 | 0xffffffff, /* dst_mask */ | |
1004 | TRUE), /* pcrel_offset */ | |
1005 | ||
07d6d2b8 | 1006 | HOWTO (R_ARM_LDRS_PC_G1, /* type */ |
4962c51a MS |
1007 | 0, /* rightshift */ |
1008 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1009 | 32, /* bitsize */ | |
1010 | TRUE, /* pc_relative */ | |
1011 | 0, /* bitpos */ | |
1012 | complain_overflow_dont,/* complain_on_overflow */ | |
1013 | bfd_elf_generic_reloc, /* special_function */ | |
07d6d2b8 | 1014 | "R_ARM_LDRS_PC_G1", /* name */ |
4962c51a MS |
1015 | FALSE, /* partial_inplace */ |
1016 | 0xffffffff, /* src_mask */ | |
1017 | 0xffffffff, /* dst_mask */ | |
1018 | TRUE), /* pcrel_offset */ | |
1019 | ||
07d6d2b8 | 1020 | HOWTO (R_ARM_LDRS_PC_G2, /* type */ |
4962c51a MS |
1021 | 0, /* rightshift */ |
1022 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1023 | 32, /* bitsize */ | |
1024 | TRUE, /* pc_relative */ | |
1025 | 0, /* bitpos */ | |
1026 | complain_overflow_dont,/* complain_on_overflow */ | |
1027 | bfd_elf_generic_reloc, /* special_function */ | |
07d6d2b8 | 1028 | "R_ARM_LDRS_PC_G2", /* name */ |
4962c51a MS |
1029 | FALSE, /* partial_inplace */ |
1030 | 0xffffffff, /* src_mask */ | |
1031 | 0xffffffff, /* dst_mask */ | |
1032 | TRUE), /* pcrel_offset */ | |
1033 | ||
07d6d2b8 | 1034 | HOWTO (R_ARM_LDC_PC_G0, /* type */ |
4962c51a MS |
1035 | 0, /* rightshift */ |
1036 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1037 | 32, /* bitsize */ | |
1038 | TRUE, /* pc_relative */ | |
1039 | 0, /* bitpos */ | |
1040 | complain_overflow_dont,/* complain_on_overflow */ | |
1041 | bfd_elf_generic_reloc, /* special_function */ | |
07d6d2b8 | 1042 | "R_ARM_LDC_PC_G0", /* name */ |
4962c51a MS |
1043 | FALSE, /* partial_inplace */ |
1044 | 0xffffffff, /* src_mask */ | |
1045 | 0xffffffff, /* dst_mask */ | |
1046 | TRUE), /* pcrel_offset */ | |
1047 | ||
07d6d2b8 | 1048 | HOWTO (R_ARM_LDC_PC_G1, /* type */ |
4962c51a MS |
1049 | 0, /* rightshift */ |
1050 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1051 | 32, /* bitsize */ | |
1052 | TRUE, /* pc_relative */ | |
1053 | 0, /* bitpos */ | |
1054 | complain_overflow_dont,/* complain_on_overflow */ | |
1055 | bfd_elf_generic_reloc, /* special_function */ | |
07d6d2b8 | 1056 | "R_ARM_LDC_PC_G1", /* name */ |
4962c51a MS |
1057 | FALSE, /* partial_inplace */ |
1058 | 0xffffffff, /* src_mask */ | |
1059 | 0xffffffff, /* dst_mask */ | |
1060 | TRUE), /* pcrel_offset */ | |
1061 | ||
07d6d2b8 | 1062 | HOWTO (R_ARM_LDC_PC_G2, /* type */ |
4962c51a MS |
1063 | 0, /* rightshift */ |
1064 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1065 | 32, /* bitsize */ | |
1066 | TRUE, /* pc_relative */ | |
1067 | 0, /* bitpos */ | |
1068 | complain_overflow_dont,/* complain_on_overflow */ | |
1069 | bfd_elf_generic_reloc, /* special_function */ | |
07d6d2b8 | 1070 | "R_ARM_LDC_PC_G2", /* name */ |
4962c51a MS |
1071 | FALSE, /* partial_inplace */ |
1072 | 0xffffffff, /* src_mask */ | |
1073 | 0xffffffff, /* dst_mask */ | |
1074 | TRUE), /* pcrel_offset */ | |
1075 | ||
07d6d2b8 | 1076 | HOWTO (R_ARM_ALU_SB_G0_NC, /* type */ |
4962c51a MS |
1077 | 0, /* rightshift */ |
1078 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1079 | 32, /* bitsize */ | |
1080 | TRUE, /* pc_relative */ | |
1081 | 0, /* bitpos */ | |
1082 | complain_overflow_dont,/* complain_on_overflow */ | |
1083 | bfd_elf_generic_reloc, /* special_function */ | |
07d6d2b8 | 1084 | "R_ARM_ALU_SB_G0_NC", /* name */ |
4962c51a MS |
1085 | FALSE, /* partial_inplace */ |
1086 | 0xffffffff, /* src_mask */ | |
1087 | 0xffffffff, /* dst_mask */ | |
1088 | TRUE), /* pcrel_offset */ | |
1089 | ||
07d6d2b8 | 1090 | HOWTO (R_ARM_ALU_SB_G0, /* type */ |
4962c51a MS |
1091 | 0, /* rightshift */ |
1092 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1093 | 32, /* bitsize */ | |
1094 | TRUE, /* pc_relative */ | |
1095 | 0, /* bitpos */ | |
1096 | complain_overflow_dont,/* complain_on_overflow */ | |
1097 | bfd_elf_generic_reloc, /* special_function */ | |
07d6d2b8 | 1098 | "R_ARM_ALU_SB_G0", /* name */ |
4962c51a MS |
1099 | FALSE, /* partial_inplace */ |
1100 | 0xffffffff, /* src_mask */ | |
1101 | 0xffffffff, /* dst_mask */ | |
1102 | TRUE), /* pcrel_offset */ | |
1103 | ||
07d6d2b8 | 1104 | HOWTO (R_ARM_ALU_SB_G1_NC, /* type */ |
4962c51a MS |
1105 | 0, /* rightshift */ |
1106 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1107 | 32, /* bitsize */ | |
1108 | TRUE, /* pc_relative */ | |
1109 | 0, /* bitpos */ | |
1110 | complain_overflow_dont,/* complain_on_overflow */ | |
1111 | bfd_elf_generic_reloc, /* special_function */ | |
07d6d2b8 | 1112 | "R_ARM_ALU_SB_G1_NC", /* name */ |
4962c51a MS |
1113 | FALSE, /* partial_inplace */ |
1114 | 0xffffffff, /* src_mask */ | |
1115 | 0xffffffff, /* dst_mask */ | |
1116 | TRUE), /* pcrel_offset */ | |
1117 | ||
07d6d2b8 | 1118 | HOWTO (R_ARM_ALU_SB_G1, /* type */ |
4962c51a MS |
1119 | 0, /* rightshift */ |
1120 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1121 | 32, /* bitsize */ | |
1122 | TRUE, /* pc_relative */ | |
1123 | 0, /* bitpos */ | |
1124 | complain_overflow_dont,/* complain_on_overflow */ | |
1125 | bfd_elf_generic_reloc, /* special_function */ | |
07d6d2b8 | 1126 | "R_ARM_ALU_SB_G1", /* name */ |
4962c51a MS |
1127 | FALSE, /* partial_inplace */ |
1128 | 0xffffffff, /* src_mask */ | |
1129 | 0xffffffff, /* dst_mask */ | |
1130 | TRUE), /* pcrel_offset */ | |
1131 | ||
07d6d2b8 | 1132 | HOWTO (R_ARM_ALU_SB_G2, /* type */ |
4962c51a MS |
1133 | 0, /* rightshift */ |
1134 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1135 | 32, /* bitsize */ | |
1136 | TRUE, /* pc_relative */ | |
1137 | 0, /* bitpos */ | |
1138 | complain_overflow_dont,/* complain_on_overflow */ | |
1139 | bfd_elf_generic_reloc, /* special_function */ | |
07d6d2b8 | 1140 | "R_ARM_ALU_SB_G2", /* name */ |
4962c51a MS |
1141 | FALSE, /* partial_inplace */ |
1142 | 0xffffffff, /* src_mask */ | |
1143 | 0xffffffff, /* dst_mask */ | |
1144 | TRUE), /* pcrel_offset */ | |
1145 | ||
07d6d2b8 | 1146 | HOWTO (R_ARM_LDR_SB_G0, /* type */ |
4962c51a MS |
1147 | 0, /* rightshift */ |
1148 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1149 | 32, /* bitsize */ | |
1150 | TRUE, /* pc_relative */ | |
1151 | 0, /* bitpos */ | |
1152 | complain_overflow_dont,/* complain_on_overflow */ | |
1153 | bfd_elf_generic_reloc, /* special_function */ | |
07d6d2b8 | 1154 | "R_ARM_LDR_SB_G0", /* name */ |
4962c51a MS |
1155 | FALSE, /* partial_inplace */ |
1156 | 0xffffffff, /* src_mask */ | |
1157 | 0xffffffff, /* dst_mask */ | |
1158 | TRUE), /* pcrel_offset */ | |
1159 | ||
07d6d2b8 | 1160 | HOWTO (R_ARM_LDR_SB_G1, /* type */ |
4962c51a MS |
1161 | 0, /* rightshift */ |
1162 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1163 | 32, /* bitsize */ | |
1164 | TRUE, /* pc_relative */ | |
1165 | 0, /* bitpos */ | |
1166 | complain_overflow_dont,/* complain_on_overflow */ | |
1167 | bfd_elf_generic_reloc, /* special_function */ | |
07d6d2b8 | 1168 | "R_ARM_LDR_SB_G1", /* name */ |
4962c51a MS |
1169 | FALSE, /* partial_inplace */ |
1170 | 0xffffffff, /* src_mask */ | |
1171 | 0xffffffff, /* dst_mask */ | |
1172 | TRUE), /* pcrel_offset */ | |
1173 | ||
07d6d2b8 | 1174 | HOWTO (R_ARM_LDR_SB_G2, /* type */ |
4962c51a MS |
1175 | 0, /* rightshift */ |
1176 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1177 | 32, /* bitsize */ | |
1178 | TRUE, /* pc_relative */ | |
1179 | 0, /* bitpos */ | |
1180 | complain_overflow_dont,/* complain_on_overflow */ | |
1181 | bfd_elf_generic_reloc, /* special_function */ | |
07d6d2b8 | 1182 | "R_ARM_LDR_SB_G2", /* name */ |
4962c51a MS |
1183 | FALSE, /* partial_inplace */ |
1184 | 0xffffffff, /* src_mask */ | |
1185 | 0xffffffff, /* dst_mask */ | |
1186 | TRUE), /* pcrel_offset */ | |
1187 | ||
07d6d2b8 | 1188 | HOWTO (R_ARM_LDRS_SB_G0, /* type */ |
4962c51a MS |
1189 | 0, /* rightshift */ |
1190 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1191 | 32, /* bitsize */ | |
1192 | TRUE, /* pc_relative */ | |
1193 | 0, /* bitpos */ | |
1194 | complain_overflow_dont,/* complain_on_overflow */ | |
1195 | bfd_elf_generic_reloc, /* special_function */ | |
07d6d2b8 | 1196 | "R_ARM_LDRS_SB_G0", /* name */ |
4962c51a MS |
1197 | FALSE, /* partial_inplace */ |
1198 | 0xffffffff, /* src_mask */ | |
1199 | 0xffffffff, /* dst_mask */ | |
1200 | TRUE), /* pcrel_offset */ | |
1201 | ||
07d6d2b8 | 1202 | HOWTO (R_ARM_LDRS_SB_G1, /* type */ |
4962c51a MS |
1203 | 0, /* rightshift */ |
1204 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1205 | 32, /* bitsize */ | |
1206 | TRUE, /* pc_relative */ | |
1207 | 0, /* bitpos */ | |
1208 | complain_overflow_dont,/* complain_on_overflow */ | |
1209 | bfd_elf_generic_reloc, /* special_function */ | |
07d6d2b8 | 1210 | "R_ARM_LDRS_SB_G1", /* name */ |
4962c51a MS |
1211 | FALSE, /* partial_inplace */ |
1212 | 0xffffffff, /* src_mask */ | |
1213 | 0xffffffff, /* dst_mask */ | |
1214 | TRUE), /* pcrel_offset */ | |
1215 | ||
07d6d2b8 | 1216 | HOWTO (R_ARM_LDRS_SB_G2, /* type */ |
4962c51a MS |
1217 | 0, /* rightshift */ |
1218 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1219 | 32, /* bitsize */ | |
1220 | TRUE, /* pc_relative */ | |
1221 | 0, /* bitpos */ | |
1222 | complain_overflow_dont,/* complain_on_overflow */ | |
1223 | bfd_elf_generic_reloc, /* special_function */ | |
07d6d2b8 | 1224 | "R_ARM_LDRS_SB_G2", /* name */ |
4962c51a MS |
1225 | FALSE, /* partial_inplace */ |
1226 | 0xffffffff, /* src_mask */ | |
1227 | 0xffffffff, /* dst_mask */ | |
1228 | TRUE), /* pcrel_offset */ | |
1229 | ||
07d6d2b8 | 1230 | HOWTO (R_ARM_LDC_SB_G0, /* type */ |
4962c51a MS |
1231 | 0, /* rightshift */ |
1232 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1233 | 32, /* bitsize */ | |
1234 | TRUE, /* pc_relative */ | |
1235 | 0, /* bitpos */ | |
1236 | complain_overflow_dont,/* complain_on_overflow */ | |
1237 | bfd_elf_generic_reloc, /* special_function */ | |
07d6d2b8 | 1238 | "R_ARM_LDC_SB_G0", /* name */ |
4962c51a MS |
1239 | FALSE, /* partial_inplace */ |
1240 | 0xffffffff, /* src_mask */ | |
1241 | 0xffffffff, /* dst_mask */ | |
1242 | TRUE), /* pcrel_offset */ | |
1243 | ||
07d6d2b8 | 1244 | HOWTO (R_ARM_LDC_SB_G1, /* type */ |
4962c51a MS |
1245 | 0, /* rightshift */ |
1246 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1247 | 32, /* bitsize */ | |
1248 | TRUE, /* pc_relative */ | |
1249 | 0, /* bitpos */ | |
1250 | complain_overflow_dont,/* complain_on_overflow */ | |
1251 | bfd_elf_generic_reloc, /* special_function */ | |
07d6d2b8 | 1252 | "R_ARM_LDC_SB_G1", /* name */ |
4962c51a MS |
1253 | FALSE, /* partial_inplace */ |
1254 | 0xffffffff, /* src_mask */ | |
1255 | 0xffffffff, /* dst_mask */ | |
1256 | TRUE), /* pcrel_offset */ | |
1257 | ||
07d6d2b8 | 1258 | HOWTO (R_ARM_LDC_SB_G2, /* type */ |
4962c51a MS |
1259 | 0, /* rightshift */ |
1260 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1261 | 32, /* bitsize */ | |
1262 | TRUE, /* pc_relative */ | |
1263 | 0, /* bitpos */ | |
1264 | complain_overflow_dont,/* complain_on_overflow */ | |
1265 | bfd_elf_generic_reloc, /* special_function */ | |
07d6d2b8 | 1266 | "R_ARM_LDC_SB_G2", /* name */ |
4962c51a MS |
1267 | FALSE, /* partial_inplace */ |
1268 | 0xffffffff, /* src_mask */ | |
1269 | 0xffffffff, /* dst_mask */ | |
1270 | TRUE), /* pcrel_offset */ | |
1271 | ||
1272 | /* End of group relocations. */ | |
c19d1205 | 1273 | |
c19d1205 ZW |
1274 | HOWTO (R_ARM_MOVW_BREL_NC, /* type */ |
1275 | 0, /* rightshift */ | |
1276 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1277 | 16, /* bitsize */ | |
1278 | FALSE, /* pc_relative */ | |
1279 | 0, /* bitpos */ | |
1280 | complain_overflow_dont,/* complain_on_overflow */ | |
1281 | bfd_elf_generic_reloc, /* special_function */ | |
1282 | "R_ARM_MOVW_BREL_NC", /* name */ | |
1283 | FALSE, /* partial_inplace */ | |
1284 | 0x0000ffff, /* src_mask */ | |
1285 | 0x0000ffff, /* dst_mask */ | |
1286 | FALSE), /* pcrel_offset */ | |
1287 | ||
1288 | HOWTO (R_ARM_MOVT_BREL, /* type */ | |
1289 | 0, /* rightshift */ | |
1290 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1291 | 16, /* bitsize */ | |
1292 | FALSE, /* pc_relative */ | |
1293 | 0, /* bitpos */ | |
1294 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1295 | bfd_elf_generic_reloc, /* special_function */ | |
1296 | "R_ARM_MOVT_BREL", /* name */ | |
1297 | FALSE, /* partial_inplace */ | |
1298 | 0x0000ffff, /* src_mask */ | |
1299 | 0x0000ffff, /* dst_mask */ | |
1300 | FALSE), /* pcrel_offset */ | |
1301 | ||
1302 | HOWTO (R_ARM_MOVW_BREL, /* type */ | |
1303 | 0, /* rightshift */ | |
1304 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1305 | 16, /* bitsize */ | |
1306 | FALSE, /* pc_relative */ | |
1307 | 0, /* bitpos */ | |
1308 | complain_overflow_dont,/* complain_on_overflow */ | |
1309 | bfd_elf_generic_reloc, /* special_function */ | |
1310 | "R_ARM_MOVW_BREL", /* name */ | |
1311 | FALSE, /* partial_inplace */ | |
1312 | 0x0000ffff, /* src_mask */ | |
1313 | 0x0000ffff, /* dst_mask */ | |
1314 | FALSE), /* pcrel_offset */ | |
1315 | ||
1316 | HOWTO (R_ARM_THM_MOVW_BREL_NC,/* type */ | |
1317 | 0, /* rightshift */ | |
1318 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1319 | 16, /* bitsize */ | |
1320 | FALSE, /* pc_relative */ | |
1321 | 0, /* bitpos */ | |
1322 | complain_overflow_dont,/* complain_on_overflow */ | |
1323 | bfd_elf_generic_reloc, /* special_function */ | |
1324 | "R_ARM_THM_MOVW_BREL_NC",/* name */ | |
1325 | FALSE, /* partial_inplace */ | |
1326 | 0x040f70ff, /* src_mask */ | |
1327 | 0x040f70ff, /* dst_mask */ | |
1328 | FALSE), /* pcrel_offset */ | |
1329 | ||
1330 | HOWTO (R_ARM_THM_MOVT_BREL, /* type */ | |
1331 | 0, /* rightshift */ | |
1332 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1333 | 16, /* bitsize */ | |
1334 | FALSE, /* pc_relative */ | |
1335 | 0, /* bitpos */ | |
1336 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1337 | bfd_elf_generic_reloc, /* special_function */ | |
1338 | "R_ARM_THM_MOVT_BREL", /* name */ | |
1339 | FALSE, /* partial_inplace */ | |
1340 | 0x040f70ff, /* src_mask */ | |
1341 | 0x040f70ff, /* dst_mask */ | |
1342 | FALSE), /* pcrel_offset */ | |
1343 | ||
1344 | HOWTO (R_ARM_THM_MOVW_BREL, /* type */ | |
1345 | 0, /* rightshift */ | |
1346 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1347 | 16, /* bitsize */ | |
1348 | FALSE, /* pc_relative */ | |
1349 | 0, /* bitpos */ | |
1350 | complain_overflow_dont,/* complain_on_overflow */ | |
1351 | bfd_elf_generic_reloc, /* special_function */ | |
1352 | "R_ARM_THM_MOVW_BREL", /* name */ | |
1353 | FALSE, /* partial_inplace */ | |
1354 | 0x040f70ff, /* src_mask */ | |
1355 | 0x040f70ff, /* dst_mask */ | |
1356 | FALSE), /* pcrel_offset */ | |
1357 | ||
0855e32b NS |
1358 | HOWTO (R_ARM_TLS_GOTDESC, /* type */ |
1359 | 0, /* rightshift */ | |
1360 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1361 | 32, /* bitsize */ | |
1362 | FALSE, /* pc_relative */ | |
1363 | 0, /* bitpos */ | |
1364 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1365 | NULL, /* special_function */ | |
1366 | "R_ARM_TLS_GOTDESC", /* name */ | |
1367 | TRUE, /* partial_inplace */ | |
1368 | 0xffffffff, /* src_mask */ | |
1369 | 0xffffffff, /* dst_mask */ | |
1370 | FALSE), /* pcrel_offset */ | |
1371 | ||
1372 | HOWTO (R_ARM_TLS_CALL, /* type */ | |
1373 | 0, /* rightshift */ | |
1374 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1375 | 24, /* bitsize */ | |
1376 | FALSE, /* pc_relative */ | |
1377 | 0, /* bitpos */ | |
1378 | complain_overflow_dont,/* complain_on_overflow */ | |
1379 | bfd_elf_generic_reloc, /* special_function */ | |
1380 | "R_ARM_TLS_CALL", /* name */ | |
1381 | FALSE, /* partial_inplace */ | |
1382 | 0x00ffffff, /* src_mask */ | |
1383 | 0x00ffffff, /* dst_mask */ | |
1384 | FALSE), /* pcrel_offset */ | |
1385 | ||
1386 | HOWTO (R_ARM_TLS_DESCSEQ, /* type */ | |
1387 | 0, /* rightshift */ | |
1388 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1389 | 0, /* bitsize */ | |
1390 | FALSE, /* pc_relative */ | |
1391 | 0, /* bitpos */ | |
1392 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1393 | bfd_elf_generic_reloc, /* special_function */ | |
1394 | "R_ARM_TLS_DESCSEQ", /* name */ | |
1395 | FALSE, /* partial_inplace */ | |
1396 | 0x00000000, /* src_mask */ | |
1397 | 0x00000000, /* dst_mask */ | |
1398 | FALSE), /* pcrel_offset */ | |
1399 | ||
1400 | HOWTO (R_ARM_THM_TLS_CALL, /* type */ | |
1401 | 0, /* rightshift */ | |
1402 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1403 | 24, /* bitsize */ | |
1404 | FALSE, /* pc_relative */ | |
1405 | 0, /* bitpos */ | |
1406 | complain_overflow_dont,/* complain_on_overflow */ | |
1407 | bfd_elf_generic_reloc, /* special_function */ | |
1408 | "R_ARM_THM_TLS_CALL", /* name */ | |
1409 | FALSE, /* partial_inplace */ | |
1410 | 0x07ff07ff, /* src_mask */ | |
1411 | 0x07ff07ff, /* dst_mask */ | |
1412 | FALSE), /* pcrel_offset */ | |
c19d1205 ZW |
1413 | |
1414 | HOWTO (R_ARM_PLT32_ABS, /* type */ | |
1415 | 0, /* rightshift */ | |
1416 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1417 | 32, /* bitsize */ | |
1418 | FALSE, /* pc_relative */ | |
1419 | 0, /* bitpos */ | |
1420 | complain_overflow_dont,/* complain_on_overflow */ | |
1421 | bfd_elf_generic_reloc, /* special_function */ | |
1422 | "R_ARM_PLT32_ABS", /* name */ | |
1423 | FALSE, /* partial_inplace */ | |
1424 | 0xffffffff, /* src_mask */ | |
1425 | 0xffffffff, /* dst_mask */ | |
1426 | FALSE), /* pcrel_offset */ | |
1427 | ||
1428 | HOWTO (R_ARM_GOT_ABS, /* type */ | |
1429 | 0, /* rightshift */ | |
1430 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1431 | 32, /* bitsize */ | |
1432 | FALSE, /* pc_relative */ | |
1433 | 0, /* bitpos */ | |
1434 | complain_overflow_dont,/* complain_on_overflow */ | |
1435 | bfd_elf_generic_reloc, /* special_function */ | |
1436 | "R_ARM_GOT_ABS", /* name */ | |
1437 | FALSE, /* partial_inplace */ | |
1438 | 0xffffffff, /* src_mask */ | |
1439 | 0xffffffff, /* dst_mask */ | |
1440 | FALSE), /* pcrel_offset */ | |
1441 | ||
1442 | HOWTO (R_ARM_GOT_PREL, /* type */ | |
1443 | 0, /* rightshift */ | |
1444 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1445 | 32, /* bitsize */ | |
1446 | TRUE, /* pc_relative */ | |
1447 | 0, /* bitpos */ | |
1448 | complain_overflow_dont, /* complain_on_overflow */ | |
1449 | bfd_elf_generic_reloc, /* special_function */ | |
1450 | "R_ARM_GOT_PREL", /* name */ | |
1451 | FALSE, /* partial_inplace */ | |
1452 | 0xffffffff, /* src_mask */ | |
1453 | 0xffffffff, /* dst_mask */ | |
1454 | TRUE), /* pcrel_offset */ | |
1455 | ||
1456 | HOWTO (R_ARM_GOT_BREL12, /* type */ | |
1457 | 0, /* rightshift */ | |
1458 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1459 | 12, /* bitsize */ | |
1460 | FALSE, /* pc_relative */ | |
1461 | 0, /* bitpos */ | |
1462 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1463 | bfd_elf_generic_reloc, /* special_function */ | |
1464 | "R_ARM_GOT_BREL12", /* name */ | |
1465 | FALSE, /* partial_inplace */ | |
1466 | 0x00000fff, /* src_mask */ | |
1467 | 0x00000fff, /* dst_mask */ | |
1468 | FALSE), /* pcrel_offset */ | |
1469 | ||
1470 | HOWTO (R_ARM_GOTOFF12, /* type */ | |
1471 | 0, /* rightshift */ | |
1472 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1473 | 12, /* bitsize */ | |
1474 | FALSE, /* pc_relative */ | |
1475 | 0, /* bitpos */ | |
1476 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1477 | bfd_elf_generic_reloc, /* special_function */ | |
1478 | "R_ARM_GOTOFF12", /* name */ | |
1479 | FALSE, /* partial_inplace */ | |
1480 | 0x00000fff, /* src_mask */ | |
1481 | 0x00000fff, /* dst_mask */ | |
1482 | FALSE), /* pcrel_offset */ | |
1483 | ||
07d6d2b8 | 1484 | EMPTY_HOWTO (R_ARM_GOTRELAX), /* reserved for future GOT-load optimizations */ |
c19d1205 ZW |
1485 | |
1486 | /* GNU extension to record C++ vtable member usage */ | |
07d6d2b8 AM |
1487 | HOWTO (R_ARM_GNU_VTENTRY, /* type */ |
1488 | 0, /* rightshift */ | |
1489 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1490 | 0, /* bitsize */ | |
1491 | FALSE, /* pc_relative */ | |
1492 | 0, /* bitpos */ | |
99059e56 | 1493 | complain_overflow_dont, /* complain_on_overflow */ |
07d6d2b8 AM |
1494 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ |
1495 | "R_ARM_GNU_VTENTRY", /* name */ | |
1496 | FALSE, /* partial_inplace */ | |
1497 | 0, /* src_mask */ | |
1498 | 0, /* dst_mask */ | |
1499 | FALSE), /* pcrel_offset */ | |
c19d1205 ZW |
1500 | |
1501 | /* GNU extension to record C++ vtable hierarchy */ | |
1502 | HOWTO (R_ARM_GNU_VTINHERIT, /* type */ | |
07d6d2b8 AM |
1503 | 0, /* rightshift */ |
1504 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1505 | 0, /* bitsize */ | |
1506 | FALSE, /* pc_relative */ | |
1507 | 0, /* bitpos */ | |
99059e56 | 1508 | complain_overflow_dont, /* complain_on_overflow */ |
07d6d2b8 | 1509 | NULL, /* special_function */ |
99059e56 | 1510 | "R_ARM_GNU_VTINHERIT", /* name */ |
07d6d2b8 AM |
1511 | FALSE, /* partial_inplace */ |
1512 | 0, /* src_mask */ | |
1513 | 0, /* dst_mask */ | |
1514 | FALSE), /* pcrel_offset */ | |
c19d1205 ZW |
1515 | |
1516 | HOWTO (R_ARM_THM_JUMP11, /* type */ | |
1517 | 1, /* rightshift */ | |
1518 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1519 | 11, /* bitsize */ | |
1520 | TRUE, /* pc_relative */ | |
1521 | 0, /* bitpos */ | |
1522 | complain_overflow_signed, /* complain_on_overflow */ | |
1523 | bfd_elf_generic_reloc, /* special_function */ | |
1524 | "R_ARM_THM_JUMP11", /* name */ | |
1525 | FALSE, /* partial_inplace */ | |
1526 | 0x000007ff, /* src_mask */ | |
1527 | 0x000007ff, /* dst_mask */ | |
1528 | TRUE), /* pcrel_offset */ | |
1529 | ||
1530 | HOWTO (R_ARM_THM_JUMP8, /* type */ | |
1531 | 1, /* rightshift */ | |
1532 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1533 | 8, /* bitsize */ | |
1534 | TRUE, /* pc_relative */ | |
1535 | 0, /* bitpos */ | |
1536 | complain_overflow_signed, /* complain_on_overflow */ | |
1537 | bfd_elf_generic_reloc, /* special_function */ | |
1538 | "R_ARM_THM_JUMP8", /* name */ | |
1539 | FALSE, /* partial_inplace */ | |
1540 | 0x000000ff, /* src_mask */ | |
1541 | 0x000000ff, /* dst_mask */ | |
1542 | TRUE), /* pcrel_offset */ | |
ba93b8ac | 1543 | |
c19d1205 ZW |
1544 | /* TLS relocations */ |
1545 | HOWTO (R_ARM_TLS_GD32, /* type */ | |
07d6d2b8 AM |
1546 | 0, /* rightshift */ |
1547 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1548 | 32, /* bitsize */ | |
1549 | FALSE, /* pc_relative */ | |
1550 | 0, /* bitpos */ | |
99059e56 RM |
1551 | complain_overflow_bitfield,/* complain_on_overflow */ |
1552 | NULL, /* special_function */ | |
1553 | "R_ARM_TLS_GD32", /* name */ | |
1554 | TRUE, /* partial_inplace */ | |
1555 | 0xffffffff, /* src_mask */ | |
1556 | 0xffffffff, /* dst_mask */ | |
07d6d2b8 | 1557 | FALSE), /* pcrel_offset */ |
ba93b8ac | 1558 | |
ba93b8ac | 1559 | HOWTO (R_ARM_TLS_LDM32, /* type */ |
07d6d2b8 AM |
1560 | 0, /* rightshift */ |
1561 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1562 | 32, /* bitsize */ | |
1563 | FALSE, /* pc_relative */ | |
1564 | 0, /* bitpos */ | |
99059e56 RM |
1565 | complain_overflow_bitfield,/* complain_on_overflow */ |
1566 | bfd_elf_generic_reloc, /* special_function */ | |
1567 | "R_ARM_TLS_LDM32", /* name */ | |
1568 | TRUE, /* partial_inplace */ | |
1569 | 0xffffffff, /* src_mask */ | |
1570 | 0xffffffff, /* dst_mask */ | |
07d6d2b8 | 1571 | FALSE), /* pcrel_offset */ |
ba93b8ac | 1572 | |
c19d1205 | 1573 | HOWTO (R_ARM_TLS_LDO32, /* type */ |
07d6d2b8 AM |
1574 | 0, /* rightshift */ |
1575 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1576 | 32, /* bitsize */ | |
1577 | FALSE, /* pc_relative */ | |
1578 | 0, /* bitpos */ | |
99059e56 RM |
1579 | complain_overflow_bitfield,/* complain_on_overflow */ |
1580 | bfd_elf_generic_reloc, /* special_function */ | |
1581 | "R_ARM_TLS_LDO32", /* name */ | |
1582 | TRUE, /* partial_inplace */ | |
1583 | 0xffffffff, /* src_mask */ | |
1584 | 0xffffffff, /* dst_mask */ | |
07d6d2b8 | 1585 | FALSE), /* pcrel_offset */ |
ba93b8ac | 1586 | |
ba93b8ac | 1587 | HOWTO (R_ARM_TLS_IE32, /* type */ |
07d6d2b8 AM |
1588 | 0, /* rightshift */ |
1589 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1590 | 32, /* bitsize */ | |
1591 | FALSE, /* pc_relative */ | |
1592 | 0, /* bitpos */ | |
99059e56 RM |
1593 | complain_overflow_bitfield,/* complain_on_overflow */ |
1594 | NULL, /* special_function */ | |
1595 | "R_ARM_TLS_IE32", /* name */ | |
1596 | TRUE, /* partial_inplace */ | |
1597 | 0xffffffff, /* src_mask */ | |
1598 | 0xffffffff, /* dst_mask */ | |
07d6d2b8 | 1599 | FALSE), /* pcrel_offset */ |
7f266840 | 1600 | |
c19d1205 | 1601 | HOWTO (R_ARM_TLS_LE32, /* type */ |
07d6d2b8 AM |
1602 | 0, /* rightshift */ |
1603 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1604 | 32, /* bitsize */ | |
1605 | FALSE, /* pc_relative */ | |
1606 | 0, /* bitpos */ | |
99059e56 | 1607 | complain_overflow_bitfield,/* complain_on_overflow */ |
07d6d2b8 | 1608 | NULL, /* special_function */ |
99059e56 RM |
1609 | "R_ARM_TLS_LE32", /* name */ |
1610 | TRUE, /* partial_inplace */ | |
1611 | 0xffffffff, /* src_mask */ | |
1612 | 0xffffffff, /* dst_mask */ | |
07d6d2b8 | 1613 | FALSE), /* pcrel_offset */ |
7f266840 | 1614 | |
c19d1205 ZW |
1615 | HOWTO (R_ARM_TLS_LDO12, /* type */ |
1616 | 0, /* rightshift */ | |
1617 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1618 | 12, /* bitsize */ | |
1619 | FALSE, /* pc_relative */ | |
7f266840 | 1620 | 0, /* bitpos */ |
c19d1205 | 1621 | complain_overflow_bitfield,/* complain_on_overflow */ |
7f266840 | 1622 | bfd_elf_generic_reloc, /* special_function */ |
c19d1205 | 1623 | "R_ARM_TLS_LDO12", /* name */ |
7f266840 | 1624 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
1625 | 0x00000fff, /* src_mask */ |
1626 | 0x00000fff, /* dst_mask */ | |
1627 | FALSE), /* pcrel_offset */ | |
7f266840 | 1628 | |
c19d1205 ZW |
1629 | HOWTO (R_ARM_TLS_LE12, /* type */ |
1630 | 0, /* rightshift */ | |
1631 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1632 | 12, /* bitsize */ | |
1633 | FALSE, /* pc_relative */ | |
7f266840 | 1634 | 0, /* bitpos */ |
c19d1205 | 1635 | complain_overflow_bitfield,/* complain_on_overflow */ |
7f266840 | 1636 | bfd_elf_generic_reloc, /* special_function */ |
c19d1205 | 1637 | "R_ARM_TLS_LE12", /* name */ |
7f266840 | 1638 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
1639 | 0x00000fff, /* src_mask */ |
1640 | 0x00000fff, /* dst_mask */ | |
1641 | FALSE), /* pcrel_offset */ | |
7f266840 | 1642 | |
c19d1205 | 1643 | HOWTO (R_ARM_TLS_IE12GP, /* type */ |
7f266840 DJ |
1644 | 0, /* rightshift */ |
1645 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c19d1205 ZW |
1646 | 12, /* bitsize */ |
1647 | FALSE, /* pc_relative */ | |
7f266840 | 1648 | 0, /* bitpos */ |
c19d1205 | 1649 | complain_overflow_bitfield,/* complain_on_overflow */ |
7f266840 | 1650 | bfd_elf_generic_reloc, /* special_function */ |
c19d1205 | 1651 | "R_ARM_TLS_IE12GP", /* name */ |
7f266840 | 1652 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
1653 | 0x00000fff, /* src_mask */ |
1654 | 0x00000fff, /* dst_mask */ | |
1655 | FALSE), /* pcrel_offset */ | |
0855e32b | 1656 | |
34e77a92 | 1657 | /* 112-127 private relocations. */ |
0855e32b NS |
1658 | EMPTY_HOWTO (112), |
1659 | EMPTY_HOWTO (113), | |
1660 | EMPTY_HOWTO (114), | |
1661 | EMPTY_HOWTO (115), | |
1662 | EMPTY_HOWTO (116), | |
1663 | EMPTY_HOWTO (117), | |
1664 | EMPTY_HOWTO (118), | |
1665 | EMPTY_HOWTO (119), | |
1666 | EMPTY_HOWTO (120), | |
1667 | EMPTY_HOWTO (121), | |
1668 | EMPTY_HOWTO (122), | |
1669 | EMPTY_HOWTO (123), | |
1670 | EMPTY_HOWTO (124), | |
1671 | EMPTY_HOWTO (125), | |
1672 | EMPTY_HOWTO (126), | |
1673 | EMPTY_HOWTO (127), | |
34e77a92 RS |
1674 | |
1675 | /* R_ARM_ME_TOO, obsolete. */ | |
0855e32b NS |
1676 | EMPTY_HOWTO (128), |
1677 | ||
1678 | HOWTO (R_ARM_THM_TLS_DESCSEQ, /* type */ | |
1679 | 0, /* rightshift */ | |
1680 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1681 | 0, /* bitsize */ | |
1682 | FALSE, /* pc_relative */ | |
1683 | 0, /* bitpos */ | |
1684 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1685 | bfd_elf_generic_reloc, /* special_function */ | |
1686 | "R_ARM_THM_TLS_DESCSEQ",/* name */ | |
1687 | FALSE, /* partial_inplace */ | |
1688 | 0x00000000, /* src_mask */ | |
1689 | 0x00000000, /* dst_mask */ | |
1690 | FALSE), /* pcrel_offset */ | |
72d98d16 MG |
1691 | EMPTY_HOWTO (130), |
1692 | EMPTY_HOWTO (131), | |
1693 | HOWTO (R_ARM_THM_ALU_ABS_G0_NC,/* type. */ | |
1694 | 0, /* rightshift. */ | |
1695 | 1, /* size (0 = byte, 1 = short, 2 = long). */ | |
1696 | 16, /* bitsize. */ | |
1697 | FALSE, /* pc_relative. */ | |
1698 | 0, /* bitpos. */ | |
1699 | complain_overflow_bitfield,/* complain_on_overflow. */ | |
1700 | bfd_elf_generic_reloc, /* special_function. */ | |
1701 | "R_ARM_THM_ALU_ABS_G0_NC",/* name. */ | |
1702 | FALSE, /* partial_inplace. */ | |
1703 | 0x00000000, /* src_mask. */ | |
1704 | 0x00000000, /* dst_mask. */ | |
1705 | FALSE), /* pcrel_offset. */ | |
1706 | HOWTO (R_ARM_THM_ALU_ABS_G1_NC,/* type. */ | |
1707 | 0, /* rightshift. */ | |
1708 | 1, /* size (0 = byte, 1 = short, 2 = long). */ | |
1709 | 16, /* bitsize. */ | |
1710 | FALSE, /* pc_relative. */ | |
1711 | 0, /* bitpos. */ | |
1712 | complain_overflow_bitfield,/* complain_on_overflow. */ | |
1713 | bfd_elf_generic_reloc, /* special_function. */ | |
1714 | "R_ARM_THM_ALU_ABS_G1_NC",/* name. */ | |
1715 | FALSE, /* partial_inplace. */ | |
1716 | 0x00000000, /* src_mask. */ | |
1717 | 0x00000000, /* dst_mask. */ | |
1718 | FALSE), /* pcrel_offset. */ | |
1719 | HOWTO (R_ARM_THM_ALU_ABS_G2_NC,/* type. */ | |
1720 | 0, /* rightshift. */ | |
1721 | 1, /* size (0 = byte, 1 = short, 2 = long). */ | |
1722 | 16, /* bitsize. */ | |
1723 | FALSE, /* pc_relative. */ | |
1724 | 0, /* bitpos. */ | |
1725 | complain_overflow_bitfield,/* complain_on_overflow. */ | |
1726 | bfd_elf_generic_reloc, /* special_function. */ | |
1727 | "R_ARM_THM_ALU_ABS_G2_NC",/* name. */ | |
1728 | FALSE, /* partial_inplace. */ | |
1729 | 0x00000000, /* src_mask. */ | |
1730 | 0x00000000, /* dst_mask. */ | |
1731 | FALSE), /* pcrel_offset. */ | |
1732 | HOWTO (R_ARM_THM_ALU_ABS_G3_NC,/* type. */ | |
1733 | 0, /* rightshift. */ | |
1734 | 1, /* size (0 = byte, 1 = short, 2 = long). */ | |
1735 | 16, /* bitsize. */ | |
1736 | FALSE, /* pc_relative. */ | |
1737 | 0, /* bitpos. */ | |
1738 | complain_overflow_bitfield,/* complain_on_overflow. */ | |
1739 | bfd_elf_generic_reloc, /* special_function. */ | |
1740 | "R_ARM_THM_ALU_ABS_G3_NC",/* name. */ | |
1741 | FALSE, /* partial_inplace. */ | |
1742 | 0x00000000, /* src_mask. */ | |
1743 | 0x00000000, /* dst_mask. */ | |
1744 | FALSE), /* pcrel_offset. */ | |
e5d6e09e AV |
1745 | /* Relocations for Armv8.1-M Mainline. */ |
1746 | HOWTO (R_ARM_THM_BF16, /* type. */ | |
1747 | 0, /* rightshift. */ | |
1748 | 1, /* size (0 = byte, 1 = short, 2 = long). */ | |
1749 | 16, /* bitsize. */ | |
1750 | TRUE, /* pc_relative. */ | |
1751 | 0, /* bitpos. */ | |
1752 | complain_overflow_dont,/* do not complain_on_overflow. */ | |
1753 | bfd_elf_generic_reloc, /* special_function. */ | |
1754 | "R_ARM_THM_BF16", /* name. */ | |
1755 | FALSE, /* partial_inplace. */ | |
1756 | 0x001f0ffe, /* src_mask. */ | |
1757 | 0x001f0ffe, /* dst_mask. */ | |
1758 | TRUE), /* pcrel_offset. */ | |
1caf72a5 AV |
1759 | EMPTY_HOWTO (137), |
1760 | HOWTO (R_ARM_THM_BF18, /* type. */ | |
1761 | 0, /* rightshift. */ | |
1762 | 1, /* size (0 = byte, 1 = short, 2 = long). */ | |
1763 | 18, /* bitsize. */ | |
1764 | TRUE, /* pc_relative. */ | |
1765 | 0, /* bitpos. */ | |
1766 | complain_overflow_dont,/* do not complain_on_overflow. */ | |
1767 | bfd_elf_generic_reloc, /* special_function. */ | |
1768 | "R_ARM_THM_BF18", /* name. */ | |
1769 | FALSE, /* partial_inplace. */ | |
1770 | 0x007f0ffe, /* src_mask. */ | |
1771 | 0x007f0ffe, /* dst_mask. */ | |
1772 | TRUE), /* pcrel_offset. */ | |
c19d1205 ZW |
1773 | }; |
1774 | ||
34e77a92 | 1775 | /* 160 onwards: */ |
5c5a4843 | 1776 | static reloc_howto_type elf32_arm_howto_table_2[8] = |
34e77a92 RS |
1777 | { |
1778 | HOWTO (R_ARM_IRELATIVE, /* type */ | |
07d6d2b8 AM |
1779 | 0, /* rightshift */ |
1780 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1781 | 32, /* bitsize */ | |
1782 | FALSE, /* pc_relative */ | |
1783 | 0, /* bitpos */ | |
99059e56 RM |
1784 | complain_overflow_bitfield,/* complain_on_overflow */ |
1785 | bfd_elf_generic_reloc, /* special_function */ | |
1786 | "R_ARM_IRELATIVE", /* name */ | |
1787 | TRUE, /* partial_inplace */ | |
1788 | 0xffffffff, /* src_mask */ | |
1789 | 0xffffffff, /* dst_mask */ | |
188fd7ae CL |
1790 | FALSE), /* pcrel_offset */ |
1791 | HOWTO (R_ARM_GOTFUNCDESC, /* type */ | |
1792 | 0, /* rightshift */ | |
1793 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1794 | 32, /* bitsize */ | |
1795 | FALSE, /* pc_relative */ | |
1796 | 0, /* bitpos */ | |
1797 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1798 | bfd_elf_generic_reloc, /* special_function */ | |
1799 | "R_ARM_GOTFUNCDESC", /* name */ | |
1800 | FALSE, /* partial_inplace */ | |
1801 | 0, /* src_mask */ | |
1802 | 0xffffffff, /* dst_mask */ | |
1803 | FALSE), /* pcrel_offset */ | |
1804 | HOWTO (R_ARM_GOTOFFFUNCDESC, /* type */ | |
1805 | 0, /* rightshift */ | |
1806 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1807 | 32, /* bitsize */ | |
1808 | FALSE, /* pc_relative */ | |
1809 | 0, /* bitpos */ | |
1810 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1811 | bfd_elf_generic_reloc, /* special_function */ | |
1812 | "R_ARM_GOTOFFFUNCDESC",/* name */ | |
1813 | FALSE, /* partial_inplace */ | |
1814 | 0, /* src_mask */ | |
1815 | 0xffffffff, /* dst_mask */ | |
1816 | FALSE), /* pcrel_offset */ | |
1817 | HOWTO (R_ARM_FUNCDESC, /* type */ | |
1818 | 0, /* rightshift */ | |
1819 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1820 | 32, /* bitsize */ | |
1821 | FALSE, /* pc_relative */ | |
1822 | 0, /* bitpos */ | |
1823 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1824 | bfd_elf_generic_reloc, /* special_function */ | |
1825 | "R_ARM_FUNCDESC", /* name */ | |
1826 | FALSE, /* partial_inplace */ | |
1827 | 0, /* src_mask */ | |
1828 | 0xffffffff, /* dst_mask */ | |
1829 | FALSE), /* pcrel_offset */ | |
1830 | HOWTO (R_ARM_FUNCDESC_VALUE, /* type */ | |
1831 | 0, /* rightshift */ | |
1832 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1833 | 64, /* bitsize */ | |
1834 | FALSE, /* pc_relative */ | |
1835 | 0, /* bitpos */ | |
1836 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1837 | bfd_elf_generic_reloc, /* special_function */ | |
1838 | "R_ARM_FUNCDESC_VALUE",/* name */ | |
1839 | FALSE, /* partial_inplace */ | |
1840 | 0, /* src_mask */ | |
1841 | 0xffffffff, /* dst_mask */ | |
1842 | FALSE), /* pcrel_offset */ | |
5c5a4843 CL |
1843 | HOWTO (R_ARM_TLS_GD32_FDPIC, /* type */ |
1844 | 0, /* rightshift */ | |
1845 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1846 | 32, /* bitsize */ | |
1847 | FALSE, /* pc_relative */ | |
1848 | 0, /* bitpos */ | |
1849 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1850 | bfd_elf_generic_reloc, /* special_function */ | |
1851 | "R_ARM_TLS_GD32_FDPIC",/* name */ | |
1852 | FALSE, /* partial_inplace */ | |
1853 | 0, /* src_mask */ | |
1854 | 0xffffffff, /* dst_mask */ | |
1855 | FALSE), /* pcrel_offset */ | |
1856 | HOWTO (R_ARM_TLS_LDM32_FDPIC, /* type */ | |
1857 | 0, /* rightshift */ | |
1858 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1859 | 32, /* bitsize */ | |
1860 | FALSE, /* pc_relative */ | |
1861 | 0, /* bitpos */ | |
1862 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1863 | bfd_elf_generic_reloc, /* special_function */ | |
1864 | "R_ARM_TLS_LDM32_FDPIC",/* name */ | |
1865 | FALSE, /* partial_inplace */ | |
1866 | 0, /* src_mask */ | |
1867 | 0xffffffff, /* dst_mask */ | |
1868 | FALSE), /* pcrel_offset */ | |
1869 | HOWTO (R_ARM_TLS_IE32_FDPIC, /* type */ | |
1870 | 0, /* rightshift */ | |
1871 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1872 | 32, /* bitsize */ | |
1873 | FALSE, /* pc_relative */ | |
1874 | 0, /* bitpos */ | |
1875 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1876 | bfd_elf_generic_reloc, /* special_function */ | |
1877 | "R_ARM_TLS_IE32_FDPIC",/* name */ | |
1878 | FALSE, /* partial_inplace */ | |
1879 | 0, /* src_mask */ | |
1880 | 0xffffffff, /* dst_mask */ | |
1881 | FALSE), /* pcrel_offset */ | |
34e77a92 | 1882 | }; |
c19d1205 | 1883 | |
34e77a92 RS |
1884 | /* 249-255 extended, currently unused, relocations: */ |
1885 | static reloc_howto_type elf32_arm_howto_table_3[4] = | |
7f266840 DJ |
1886 | { |
1887 | HOWTO (R_ARM_RREL32, /* type */ | |
1888 | 0, /* rightshift */ | |
1889 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1890 | 0, /* bitsize */ | |
1891 | FALSE, /* pc_relative */ | |
1892 | 0, /* bitpos */ | |
1893 | complain_overflow_dont,/* complain_on_overflow */ | |
1894 | bfd_elf_generic_reloc, /* special_function */ | |
1895 | "R_ARM_RREL32", /* name */ | |
1896 | FALSE, /* partial_inplace */ | |
1897 | 0, /* src_mask */ | |
1898 | 0, /* dst_mask */ | |
1899 | FALSE), /* pcrel_offset */ | |
1900 | ||
1901 | HOWTO (R_ARM_RABS32, /* type */ | |
1902 | 0, /* rightshift */ | |
1903 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1904 | 0, /* bitsize */ | |
1905 | FALSE, /* pc_relative */ | |
1906 | 0, /* bitpos */ | |
1907 | complain_overflow_dont,/* complain_on_overflow */ | |
1908 | bfd_elf_generic_reloc, /* special_function */ | |
1909 | "R_ARM_RABS32", /* name */ | |
1910 | FALSE, /* partial_inplace */ | |
1911 | 0, /* src_mask */ | |
1912 | 0, /* dst_mask */ | |
1913 | FALSE), /* pcrel_offset */ | |
1914 | ||
1915 | HOWTO (R_ARM_RPC24, /* type */ | |
1916 | 0, /* rightshift */ | |
1917 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1918 | 0, /* bitsize */ | |
1919 | FALSE, /* pc_relative */ | |
1920 | 0, /* bitpos */ | |
1921 | complain_overflow_dont,/* complain_on_overflow */ | |
1922 | bfd_elf_generic_reloc, /* special_function */ | |
1923 | "R_ARM_RPC24", /* name */ | |
1924 | FALSE, /* partial_inplace */ | |
1925 | 0, /* src_mask */ | |
1926 | 0, /* dst_mask */ | |
1927 | FALSE), /* pcrel_offset */ | |
1928 | ||
1929 | HOWTO (R_ARM_RBASE, /* type */ | |
1930 | 0, /* rightshift */ | |
1931 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1932 | 0, /* bitsize */ | |
1933 | FALSE, /* pc_relative */ | |
1934 | 0, /* bitpos */ | |
1935 | complain_overflow_dont,/* complain_on_overflow */ | |
1936 | bfd_elf_generic_reloc, /* special_function */ | |
1937 | "R_ARM_RBASE", /* name */ | |
1938 | FALSE, /* partial_inplace */ | |
1939 | 0, /* src_mask */ | |
1940 | 0, /* dst_mask */ | |
1941 | FALSE) /* pcrel_offset */ | |
1942 | }; | |
1943 | ||
1944 | static reloc_howto_type * | |
1945 | elf32_arm_howto_from_type (unsigned int r_type) | |
1946 | { | |
906e58ca | 1947 | if (r_type < ARRAY_SIZE (elf32_arm_howto_table_1)) |
c19d1205 | 1948 | return &elf32_arm_howto_table_1[r_type]; |
ba93b8ac | 1949 | |
188fd7ae CL |
1950 | if (r_type >= R_ARM_IRELATIVE |
1951 | && r_type < R_ARM_IRELATIVE + ARRAY_SIZE (elf32_arm_howto_table_2)) | |
34e77a92 RS |
1952 | return &elf32_arm_howto_table_2[r_type - R_ARM_IRELATIVE]; |
1953 | ||
c19d1205 | 1954 | if (r_type >= R_ARM_RREL32 |
34e77a92 RS |
1955 | && r_type < R_ARM_RREL32 + ARRAY_SIZE (elf32_arm_howto_table_3)) |
1956 | return &elf32_arm_howto_table_3[r_type - R_ARM_RREL32]; | |
7f266840 | 1957 | |
c19d1205 | 1958 | return NULL; |
7f266840 DJ |
1959 | } |
1960 | ||
f3185997 NC |
1961 | static bfd_boolean |
1962 | elf32_arm_info_to_howto (bfd * abfd, arelent * bfd_reloc, | |
7f266840 DJ |
1963 | Elf_Internal_Rela * elf_reloc) |
1964 | { | |
1965 | unsigned int r_type; | |
1966 | ||
1967 | r_type = ELF32_R_TYPE (elf_reloc->r_info); | |
f3185997 NC |
1968 | if ((bfd_reloc->howto = elf32_arm_howto_from_type (r_type)) == NULL) |
1969 | { | |
1970 | /* xgettext:c-format */ | |
1971 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), | |
1972 | abfd, r_type); | |
1973 | bfd_set_error (bfd_error_bad_value); | |
1974 | return FALSE; | |
1975 | } | |
1976 | return TRUE; | |
7f266840 DJ |
1977 | } |
1978 | ||
1979 | struct elf32_arm_reloc_map | |
1980 | { | |
1981 | bfd_reloc_code_real_type bfd_reloc_val; | |
07d6d2b8 | 1982 | unsigned char elf_reloc_val; |
7f266840 DJ |
1983 | }; |
1984 | ||
1985 | /* All entries in this list must also be present in elf32_arm_howto_table. */ | |
1986 | static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] = | |
1987 | { | |
07d6d2b8 | 1988 | {BFD_RELOC_NONE, R_ARM_NONE}, |
7f266840 | 1989 | {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24}, |
39b41c9c PB |
1990 | {BFD_RELOC_ARM_PCREL_CALL, R_ARM_CALL}, |
1991 | {BFD_RELOC_ARM_PCREL_JUMP, R_ARM_JUMP24}, | |
07d6d2b8 AM |
1992 | {BFD_RELOC_ARM_PCREL_BLX, R_ARM_XPC25}, |
1993 | {BFD_RELOC_THUMB_PCREL_BLX, R_ARM_THM_XPC22}, | |
1994 | {BFD_RELOC_32, R_ARM_ABS32}, | |
1995 | {BFD_RELOC_32_PCREL, R_ARM_REL32}, | |
1996 | {BFD_RELOC_8, R_ARM_ABS8}, | |
1997 | {BFD_RELOC_16, R_ARM_ABS16}, | |
1998 | {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12}, | |
7f266840 | 1999 | {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5}, |
c19d1205 ZW |
2000 | {BFD_RELOC_THUMB_PCREL_BRANCH25, R_ARM_THM_JUMP24}, |
2001 | {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_CALL}, | |
2002 | {BFD_RELOC_THUMB_PCREL_BRANCH12, R_ARM_THM_JUMP11}, | |
2003 | {BFD_RELOC_THUMB_PCREL_BRANCH20, R_ARM_THM_JUMP19}, | |
2004 | {BFD_RELOC_THUMB_PCREL_BRANCH9, R_ARM_THM_JUMP8}, | |
2005 | {BFD_RELOC_THUMB_PCREL_BRANCH7, R_ARM_THM_JUMP6}, | |
07d6d2b8 AM |
2006 | {BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT}, |
2007 | {BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT}, | |
2008 | {BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE}, | |
2009 | {BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF32}, | |
2010 | {BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC}, | |
2011 | {BFD_RELOC_ARM_GOT_PREL, R_ARM_GOT_PREL}, | |
2012 | {BFD_RELOC_ARM_GOT32, R_ARM_GOT32}, | |
2013 | {BFD_RELOC_ARM_PLT32, R_ARM_PLT32}, | |
7f266840 DJ |
2014 | {BFD_RELOC_ARM_TARGET1, R_ARM_TARGET1}, |
2015 | {BFD_RELOC_ARM_ROSEGREL32, R_ARM_ROSEGREL32}, | |
2016 | {BFD_RELOC_ARM_SBREL32, R_ARM_SBREL32}, | |
2017 | {BFD_RELOC_ARM_PREL31, R_ARM_PREL31}, | |
ba93b8ac | 2018 | {BFD_RELOC_ARM_TARGET2, R_ARM_TARGET2}, |
07d6d2b8 AM |
2019 | {BFD_RELOC_ARM_PLT32, R_ARM_PLT32}, |
2020 | {BFD_RELOC_ARM_TLS_GOTDESC, R_ARM_TLS_GOTDESC}, | |
2021 | {BFD_RELOC_ARM_TLS_CALL, R_ARM_TLS_CALL}, | |
0855e32b | 2022 | {BFD_RELOC_ARM_THM_TLS_CALL, R_ARM_THM_TLS_CALL}, |
07d6d2b8 | 2023 | {BFD_RELOC_ARM_TLS_DESCSEQ, R_ARM_TLS_DESCSEQ}, |
0855e32b | 2024 | {BFD_RELOC_ARM_THM_TLS_DESCSEQ, R_ARM_THM_TLS_DESCSEQ}, |
07d6d2b8 | 2025 | {BFD_RELOC_ARM_TLS_DESC, R_ARM_TLS_DESC}, |
ba93b8ac DJ |
2026 | {BFD_RELOC_ARM_TLS_GD32, R_ARM_TLS_GD32}, |
2027 | {BFD_RELOC_ARM_TLS_LDO32, R_ARM_TLS_LDO32}, | |
2028 | {BFD_RELOC_ARM_TLS_LDM32, R_ARM_TLS_LDM32}, | |
2029 | {BFD_RELOC_ARM_TLS_DTPMOD32, R_ARM_TLS_DTPMOD32}, | |
2030 | {BFD_RELOC_ARM_TLS_DTPOFF32, R_ARM_TLS_DTPOFF32}, | |
07d6d2b8 AM |
2031 | {BFD_RELOC_ARM_TLS_TPOFF32, R_ARM_TLS_TPOFF32}, |
2032 | {BFD_RELOC_ARM_TLS_IE32, R_ARM_TLS_IE32}, | |
2033 | {BFD_RELOC_ARM_TLS_LE32, R_ARM_TLS_LE32}, | |
2034 | {BFD_RELOC_ARM_IRELATIVE, R_ARM_IRELATIVE}, | |
188fd7ae CL |
2035 | {BFD_RELOC_ARM_GOTFUNCDESC, R_ARM_GOTFUNCDESC}, |
2036 | {BFD_RELOC_ARM_GOTOFFFUNCDESC, R_ARM_GOTOFFFUNCDESC}, | |
2037 | {BFD_RELOC_ARM_FUNCDESC, R_ARM_FUNCDESC}, | |
2038 | {BFD_RELOC_ARM_FUNCDESC_VALUE, R_ARM_FUNCDESC_VALUE}, | |
5c5a4843 CL |
2039 | {BFD_RELOC_ARM_TLS_GD32_FDPIC, R_ARM_TLS_GD32_FDPIC}, |
2040 | {BFD_RELOC_ARM_TLS_LDM32_FDPIC, R_ARM_TLS_LDM32_FDPIC}, | |
2041 | {BFD_RELOC_ARM_TLS_IE32_FDPIC, R_ARM_TLS_IE32_FDPIC}, | |
c19d1205 ZW |
2042 | {BFD_RELOC_VTABLE_INHERIT, R_ARM_GNU_VTINHERIT}, |
2043 | {BFD_RELOC_VTABLE_ENTRY, R_ARM_GNU_VTENTRY}, | |
b6895b4f PB |
2044 | {BFD_RELOC_ARM_MOVW, R_ARM_MOVW_ABS_NC}, |
2045 | {BFD_RELOC_ARM_MOVT, R_ARM_MOVT_ABS}, | |
2046 | {BFD_RELOC_ARM_MOVW_PCREL, R_ARM_MOVW_PREL_NC}, | |
2047 | {BFD_RELOC_ARM_MOVT_PCREL, R_ARM_MOVT_PREL}, | |
2048 | {BFD_RELOC_ARM_THUMB_MOVW, R_ARM_THM_MOVW_ABS_NC}, | |
2049 | {BFD_RELOC_ARM_THUMB_MOVT, R_ARM_THM_MOVT_ABS}, | |
2050 | {BFD_RELOC_ARM_THUMB_MOVW_PCREL, R_ARM_THM_MOVW_PREL_NC}, | |
2051 | {BFD_RELOC_ARM_THUMB_MOVT_PCREL, R_ARM_THM_MOVT_PREL}, | |
4962c51a MS |
2052 | {BFD_RELOC_ARM_ALU_PC_G0_NC, R_ARM_ALU_PC_G0_NC}, |
2053 | {BFD_RELOC_ARM_ALU_PC_G0, R_ARM_ALU_PC_G0}, | |
2054 | {BFD_RELOC_ARM_ALU_PC_G1_NC, R_ARM_ALU_PC_G1_NC}, | |
2055 | {BFD_RELOC_ARM_ALU_PC_G1, R_ARM_ALU_PC_G1}, | |
2056 | {BFD_RELOC_ARM_ALU_PC_G2, R_ARM_ALU_PC_G2}, | |
2057 | {BFD_RELOC_ARM_LDR_PC_G0, R_ARM_LDR_PC_G0}, | |
2058 | {BFD_RELOC_ARM_LDR_PC_G1, R_ARM_LDR_PC_G1}, | |
2059 | {BFD_RELOC_ARM_LDR_PC_G2, R_ARM_LDR_PC_G2}, | |
2060 | {BFD_RELOC_ARM_LDRS_PC_G0, R_ARM_LDRS_PC_G0}, | |
2061 | {BFD_RELOC_ARM_LDRS_PC_G1, R_ARM_LDRS_PC_G1}, | |
2062 | {BFD_RELOC_ARM_LDRS_PC_G2, R_ARM_LDRS_PC_G2}, | |
2063 | {BFD_RELOC_ARM_LDC_PC_G0, R_ARM_LDC_PC_G0}, | |
2064 | {BFD_RELOC_ARM_LDC_PC_G1, R_ARM_LDC_PC_G1}, | |
2065 | {BFD_RELOC_ARM_LDC_PC_G2, R_ARM_LDC_PC_G2}, | |
2066 | {BFD_RELOC_ARM_ALU_SB_G0_NC, R_ARM_ALU_SB_G0_NC}, | |
2067 | {BFD_RELOC_ARM_ALU_SB_G0, R_ARM_ALU_SB_G0}, | |
2068 | {BFD_RELOC_ARM_ALU_SB_G1_NC, R_ARM_ALU_SB_G1_NC}, | |
2069 | {BFD_RELOC_ARM_ALU_SB_G1, R_ARM_ALU_SB_G1}, | |
2070 | {BFD_RELOC_ARM_ALU_SB_G2, R_ARM_ALU_SB_G2}, | |
2071 | {BFD_RELOC_ARM_LDR_SB_G0, R_ARM_LDR_SB_G0}, | |
2072 | {BFD_RELOC_ARM_LDR_SB_G1, R_ARM_LDR_SB_G1}, | |
2073 | {BFD_RELOC_ARM_LDR_SB_G2, R_ARM_LDR_SB_G2}, | |
2074 | {BFD_RELOC_ARM_LDRS_SB_G0, R_ARM_LDRS_SB_G0}, | |
2075 | {BFD_RELOC_ARM_LDRS_SB_G1, R_ARM_LDRS_SB_G1}, | |
2076 | {BFD_RELOC_ARM_LDRS_SB_G2, R_ARM_LDRS_SB_G2}, | |
2077 | {BFD_RELOC_ARM_LDC_SB_G0, R_ARM_LDC_SB_G0}, | |
2078 | {BFD_RELOC_ARM_LDC_SB_G1, R_ARM_LDC_SB_G1}, | |
845b51d6 | 2079 | {BFD_RELOC_ARM_LDC_SB_G2, R_ARM_LDC_SB_G2}, |
72d98d16 MG |
2080 | {BFD_RELOC_ARM_V4BX, R_ARM_V4BX}, |
2081 | {BFD_RELOC_ARM_THUMB_ALU_ABS_G3_NC, R_ARM_THM_ALU_ABS_G3_NC}, | |
2082 | {BFD_RELOC_ARM_THUMB_ALU_ABS_G2_NC, R_ARM_THM_ALU_ABS_G2_NC}, | |
2083 | {BFD_RELOC_ARM_THUMB_ALU_ABS_G1_NC, R_ARM_THM_ALU_ABS_G1_NC}, | |
e5d6e09e | 2084 | {BFD_RELOC_ARM_THUMB_ALU_ABS_G0_NC, R_ARM_THM_ALU_ABS_G0_NC}, |
1caf72a5 AV |
2085 | {BFD_RELOC_ARM_THUMB_BF17, R_ARM_THM_BF16}, |
2086 | {BFD_RELOC_ARM_THUMB_BF19, R_ARM_THM_BF18} | |
7f266840 DJ |
2087 | }; |
2088 | ||
2089 | static reloc_howto_type * | |
f1c71a59 ZW |
2090 | elf32_arm_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
2091 | bfd_reloc_code_real_type code) | |
7f266840 DJ |
2092 | { |
2093 | unsigned int i; | |
8029a119 | 2094 | |
906e58ca | 2095 | for (i = 0; i < ARRAY_SIZE (elf32_arm_reloc_map); i ++) |
c19d1205 ZW |
2096 | if (elf32_arm_reloc_map[i].bfd_reloc_val == code) |
2097 | return elf32_arm_howto_from_type (elf32_arm_reloc_map[i].elf_reloc_val); | |
7f266840 | 2098 | |
c19d1205 | 2099 | return NULL; |
7f266840 DJ |
2100 | } |
2101 | ||
157090f7 AM |
2102 | static reloc_howto_type * |
2103 | elf32_arm_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2104 | const char *r_name) | |
2105 | { | |
2106 | unsigned int i; | |
2107 | ||
906e58ca | 2108 | for (i = 0; i < ARRAY_SIZE (elf32_arm_howto_table_1); i++) |
157090f7 AM |
2109 | if (elf32_arm_howto_table_1[i].name != NULL |
2110 | && strcasecmp (elf32_arm_howto_table_1[i].name, r_name) == 0) | |
2111 | return &elf32_arm_howto_table_1[i]; | |
2112 | ||
906e58ca | 2113 | for (i = 0; i < ARRAY_SIZE (elf32_arm_howto_table_2); i++) |
157090f7 AM |
2114 | if (elf32_arm_howto_table_2[i].name != NULL |
2115 | && strcasecmp (elf32_arm_howto_table_2[i].name, r_name) == 0) | |
2116 | return &elf32_arm_howto_table_2[i]; | |
2117 | ||
34e77a92 RS |
2118 | for (i = 0; i < ARRAY_SIZE (elf32_arm_howto_table_3); i++) |
2119 | if (elf32_arm_howto_table_3[i].name != NULL | |
2120 | && strcasecmp (elf32_arm_howto_table_3[i].name, r_name) == 0) | |
2121 | return &elf32_arm_howto_table_3[i]; | |
2122 | ||
157090f7 AM |
2123 | return NULL; |
2124 | } | |
2125 | ||
906e58ca NC |
2126 | /* Support for core dump NOTE sections. */ |
2127 | ||
7f266840 | 2128 | static bfd_boolean |
f1c71a59 | 2129 | elf32_arm_nabi_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
7f266840 DJ |
2130 | { |
2131 | int offset; | |
2132 | size_t size; | |
2133 | ||
2134 | switch (note->descsz) | |
2135 | { | |
2136 | default: | |
2137 | return FALSE; | |
2138 | ||
8029a119 | 2139 | case 148: /* Linux/ARM 32-bit. */ |
7f266840 | 2140 | /* pr_cursig */ |
228e534f | 2141 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
7f266840 DJ |
2142 | |
2143 | /* pr_pid */ | |
228e534f | 2144 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); |
7f266840 DJ |
2145 | |
2146 | /* pr_reg */ | |
2147 | offset = 72; | |
2148 | size = 72; | |
2149 | ||
2150 | break; | |
2151 | } | |
2152 | ||
2153 | /* Make a ".reg/999" section. */ | |
2154 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
2155 | size, note->descpos + offset); | |
2156 | } | |
2157 | ||
2158 | static bfd_boolean | |
f1c71a59 | 2159 | elf32_arm_nabi_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
7f266840 DJ |
2160 | { |
2161 | switch (note->descsz) | |
2162 | { | |
2163 | default: | |
2164 | return FALSE; | |
2165 | ||
8029a119 | 2166 | case 124: /* Linux/ARM elf_prpsinfo. */ |
228e534f | 2167 | elf_tdata (abfd)->core->pid |
4395ee08 | 2168 | = bfd_get_32 (abfd, note->descdata + 12); |
228e534f | 2169 | elf_tdata (abfd)->core->program |
7f266840 | 2170 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); |
228e534f | 2171 | elf_tdata (abfd)->core->command |
7f266840 DJ |
2172 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); |
2173 | } | |
2174 | ||
2175 | /* Note that for some reason, a spurious space is tacked | |
2176 | onto the end of the args in some (at least one anyway) | |
2177 | implementations, so strip it off if it exists. */ | |
7f266840 | 2178 | { |
228e534f | 2179 | char *command = elf_tdata (abfd)->core->command; |
7f266840 DJ |
2180 | int n = strlen (command); |
2181 | ||
2182 | if (0 < n && command[n - 1] == ' ') | |
2183 | command[n - 1] = '\0'; | |
2184 | } | |
2185 | ||
2186 | return TRUE; | |
2187 | } | |
2188 | ||
1f20dca5 UW |
2189 | static char * |
2190 | elf32_arm_nabi_write_core_note (bfd *abfd, char *buf, int *bufsiz, | |
2191 | int note_type, ...) | |
2192 | { | |
2193 | switch (note_type) | |
2194 | { | |
2195 | default: | |
2196 | return NULL; | |
2197 | ||
2198 | case NT_PRPSINFO: | |
2199 | { | |
602f1657 | 2200 | char data[124] ATTRIBUTE_NONSTRING; |
1f20dca5 UW |
2201 | va_list ap; |
2202 | ||
2203 | va_start (ap, note_type); | |
2204 | memset (data, 0, sizeof (data)); | |
2205 | strncpy (data + 28, va_arg (ap, const char *), 16); | |
be3e27bb | 2206 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 2207 | DIAGNOSTIC_PUSH; |
be3e27bb | 2208 | /* GCC 8.0 and 8.1 warn about 80 equals destination size with |
95da9854 L |
2209 | -Wstringop-truncation: |
2210 | https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643 | |
2211 | */ | |
95da9854 L |
2212 | DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION; |
2213 | #endif | |
1f20dca5 | 2214 | strncpy (data + 44, va_arg (ap, const char *), 80); |
be3e27bb | 2215 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 2216 | DIAGNOSTIC_POP; |
fe75810f | 2217 | #endif |
1f20dca5 UW |
2218 | va_end (ap); |
2219 | ||
2220 | return elfcore_write_note (abfd, buf, bufsiz, | |
2221 | "CORE", note_type, data, sizeof (data)); | |
2222 | } | |
2223 | ||
2224 | case NT_PRSTATUS: | |
2225 | { | |
2226 | char data[148]; | |
2227 | va_list ap; | |
2228 | long pid; | |
2229 | int cursig; | |
2230 | const void *greg; | |
2231 | ||
2232 | va_start (ap, note_type); | |
2233 | memset (data, 0, sizeof (data)); | |
2234 | pid = va_arg (ap, long); | |
2235 | bfd_put_32 (abfd, pid, data + 24); | |
2236 | cursig = va_arg (ap, int); | |
2237 | bfd_put_16 (abfd, cursig, data + 12); | |
2238 | greg = va_arg (ap, const void *); | |
2239 | memcpy (data + 72, greg, 72); | |
2240 | va_end (ap); | |
2241 | ||
2242 | return elfcore_write_note (abfd, buf, bufsiz, | |
2243 | "CORE", note_type, data, sizeof (data)); | |
2244 | } | |
2245 | } | |
2246 | } | |
2247 | ||
07d6d2b8 AM |
2248 | #define TARGET_LITTLE_SYM arm_elf32_le_vec |
2249 | #define TARGET_LITTLE_NAME "elf32-littlearm" | |
2250 | #define TARGET_BIG_SYM arm_elf32_be_vec | |
2251 | #define TARGET_BIG_NAME "elf32-bigarm" | |
7f266840 DJ |
2252 | |
2253 | #define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus | |
2254 | #define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo | |
1f20dca5 | 2255 | #define elf_backend_write_core_note elf32_arm_nabi_write_core_note |
7f266840 | 2256 | |
252b5132 RH |
2257 | typedef unsigned long int insn32; |
2258 | typedef unsigned short int insn16; | |
2259 | ||
3a4a14e9 PB |
2260 | /* In lieu of proper flags, assume all EABIv4 or later objects are |
2261 | interworkable. */ | |
57e8b36a | 2262 | #define INTERWORK_FLAG(abfd) \ |
3a4a14e9 | 2263 | (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \ |
3e6b1042 DJ |
2264 | || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK) \ |
2265 | || ((abfd)->flags & BFD_LINKER_CREATED)) | |
9b485d32 | 2266 | |
252b5132 RH |
2267 | /* The linker script knows the section names for placement. |
2268 | The entry_names are used to do simple name mangling on the stubs. | |
2269 | Given a function name, and its type, the stub can be found. The | |
9b485d32 | 2270 | name can be changed. The only requirement is the %s be present. */ |
252b5132 RH |
2271 | #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t" |
2272 | #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb" | |
2273 | ||
2274 | #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7" | |
2275 | #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm" | |
2276 | ||
c7b8f16e JB |
2277 | #define VFP11_ERRATUM_VENEER_SECTION_NAME ".vfp11_veneer" |
2278 | #define VFP11_ERRATUM_VENEER_ENTRY_NAME "__vfp11_veneer_%x" | |
2279 | ||
a504d23a LA |
2280 | #define STM32L4XX_ERRATUM_VENEER_SECTION_NAME ".text.stm32l4xx_veneer" |
2281 | #define STM32L4XX_ERRATUM_VENEER_ENTRY_NAME "__stm32l4xx_veneer_%x" | |
2282 | ||
845b51d6 PB |
2283 | #define ARM_BX_GLUE_SECTION_NAME ".v4_bx" |
2284 | #define ARM_BX_GLUE_ENTRY_NAME "__bx_r%d" | |
2285 | ||
7413f23f DJ |
2286 | #define STUB_ENTRY_NAME "__%s_veneer" |
2287 | ||
4ba2ef8f TP |
2288 | #define CMSE_PREFIX "__acle_se_" |
2289 | ||
252b5132 RH |
2290 | /* The name of the dynamic interpreter. This is put in the .interp |
2291 | section. */ | |
2292 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
2293 | ||
cb10292c CL |
2294 | /* FDPIC default stack size. */ |
2295 | #define DEFAULT_STACK_SIZE 0x8000 | |
2296 | ||
0855e32b | 2297 | static const unsigned long tls_trampoline [] = |
b38cadfb NC |
2298 | { |
2299 | 0xe08e0000, /* add r0, lr, r0 */ | |
2300 | 0xe5901004, /* ldr r1, [r0,#4] */ | |
2301 | 0xe12fff11, /* bx r1 */ | |
2302 | }; | |
0855e32b NS |
2303 | |
2304 | static const unsigned long dl_tlsdesc_lazy_trampoline [] = | |
b38cadfb NC |
2305 | { |
2306 | 0xe52d2004, /* push {r2} */ | |
2307 | 0xe59f200c, /* ldr r2, [pc, #3f - . - 8] */ | |
2308 | 0xe59f100c, /* ldr r1, [pc, #4f - . - 8] */ | |
2309 | 0xe79f2002, /* 1: ldr r2, [pc, r2] */ | |
2310 | 0xe081100f, /* 2: add r1, pc */ | |
2311 | 0xe12fff12, /* bx r2 */ | |
2312 | 0x00000014, /* 3: .word _GLOBAL_OFFSET_TABLE_ - 1b - 8 | |
99059e56 | 2313 | + dl_tlsdesc_lazy_resolver(GOT) */ |
b38cadfb NC |
2314 | 0x00000018, /* 4: .word _GLOBAL_OFFSET_TABLE_ - 2b - 8 */ |
2315 | }; | |
0855e32b | 2316 | |
7801f98f CL |
2317 | /* ARM FDPIC PLT entry. */ |
2318 | /* The last 5 words contain PLT lazy fragment code and data. */ | |
2319 | static const bfd_vma elf32_arm_fdpic_plt_entry [] = | |
2320 | { | |
2321 | 0xe59fc008, /* ldr r12, .L1 */ | |
2322 | 0xe08cc009, /* add r12, r12, r9 */ | |
2323 | 0xe59c9004, /* ldr r9, [r12, #4] */ | |
2324 | 0xe59cf000, /* ldr pc, [r12] */ | |
2325 | 0x00000000, /* L1. .word foo(GOTOFFFUNCDESC) */ | |
2326 | 0x00000000, /* L1. .word foo(funcdesc_value_reloc_offset) */ | |
2327 | 0xe51fc00c, /* ldr r12, [pc, #-12] */ | |
2328 | 0xe92d1000, /* push {r12} */ | |
2329 | 0xe599c004, /* ldr r12, [r9, #4] */ | |
2330 | 0xe599f000, /* ldr pc, [r9] */ | |
2331 | }; | |
2332 | ||
59029f57 CL |
2333 | /* Thumb FDPIC PLT entry. */ |
2334 | /* The last 5 words contain PLT lazy fragment code and data. */ | |
2335 | static const bfd_vma elf32_arm_fdpic_thumb_plt_entry [] = | |
2336 | { | |
2337 | 0xc00cf8df, /* ldr.w r12, .L1 */ | |
2338 | 0x0c09eb0c, /* add.w r12, r12, r9 */ | |
2339 | 0x9004f8dc, /* ldr.w r9, [r12, #4] */ | |
2340 | 0xf000f8dc, /* ldr.w pc, [r12] */ | |
2341 | 0x00000000, /* .L1 .word foo(GOTOFFFUNCDESC) */ | |
2342 | 0x00000000, /* .L2 .word foo(funcdesc_value_reloc_offset) */ | |
2343 | 0xc008f85f, /* ldr.w r12, .L2 */ | |
2344 | 0xcd04f84d, /* push {r12} */ | |
2345 | 0xc004f8d9, /* ldr.w r12, [r9, #4] */ | |
2346 | 0xf000f8d9, /* ldr.w pc, [r9] */ | |
2347 | }; | |
2348 | ||
5e681ec4 PB |
2349 | #ifdef FOUR_WORD_PLT |
2350 | ||
252b5132 RH |
2351 | /* The first entry in a procedure linkage table looks like |
2352 | this. It is set up so that any shared library function that is | |
59f2c4e7 | 2353 | called before the relocation has been set up calls the dynamic |
9b485d32 | 2354 | linker first. */ |
e5a52504 | 2355 | static const bfd_vma elf32_arm_plt0_entry [] = |
b38cadfb NC |
2356 | { |
2357 | 0xe52de004, /* str lr, [sp, #-4]! */ | |
2358 | 0xe59fe010, /* ldr lr, [pc, #16] */ | |
2359 | 0xe08fe00e, /* add lr, pc, lr */ | |
2360 | 0xe5bef008, /* ldr pc, [lr, #8]! */ | |
2361 | }; | |
5e681ec4 PB |
2362 | |
2363 | /* Subsequent entries in a procedure linkage table look like | |
2364 | this. */ | |
e5a52504 | 2365 | static const bfd_vma elf32_arm_plt_entry [] = |
b38cadfb NC |
2366 | { |
2367 | 0xe28fc600, /* add ip, pc, #NN */ | |
2368 | 0xe28cca00, /* add ip, ip, #NN */ | |
2369 | 0xe5bcf000, /* ldr pc, [ip, #NN]! */ | |
2370 | 0x00000000, /* unused */ | |
2371 | }; | |
5e681ec4 | 2372 | |
eed94f8f | 2373 | #else /* not FOUR_WORD_PLT */ |
5e681ec4 | 2374 | |
5e681ec4 PB |
2375 | /* The first entry in a procedure linkage table looks like |
2376 | this. It is set up so that any shared library function that is | |
2377 | called before the relocation has been set up calls the dynamic | |
2378 | linker first. */ | |
e5a52504 | 2379 | static const bfd_vma elf32_arm_plt0_entry [] = |
b38cadfb | 2380 | { |
07d6d2b8 AM |
2381 | 0xe52de004, /* str lr, [sp, #-4]! */ |
2382 | 0xe59fe004, /* ldr lr, [pc, #4] */ | |
2383 | 0xe08fe00e, /* add lr, pc, lr */ | |
2384 | 0xe5bef008, /* ldr pc, [lr, #8]! */ | |
2385 | 0x00000000, /* &GOT[0] - . */ | |
b38cadfb | 2386 | }; |
252b5132 | 2387 | |
1db37fe6 YG |
2388 | /* By default subsequent entries in a procedure linkage table look like |
2389 | this. Offsets that don't fit into 28 bits will cause link error. */ | |
2390 | static const bfd_vma elf32_arm_plt_entry_short [] = | |
b38cadfb NC |
2391 | { |
2392 | 0xe28fc600, /* add ip, pc, #0xNN00000 */ | |
2393 | 0xe28cca00, /* add ip, ip, #0xNN000 */ | |
2394 | 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */ | |
2395 | }; | |
5e681ec4 | 2396 | |
1db37fe6 YG |
2397 | /* When explicitly asked, we'll use this "long" entry format |
2398 | which can cope with arbitrary displacements. */ | |
2399 | static const bfd_vma elf32_arm_plt_entry_long [] = | |
2400 | { | |
07d6d2b8 AM |
2401 | 0xe28fc200, /* add ip, pc, #0xN0000000 */ |
2402 | 0xe28cc600, /* add ip, ip, #0xNN00000 */ | |
1db37fe6 YG |
2403 | 0xe28cca00, /* add ip, ip, #0xNN000 */ |
2404 | 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */ | |
2405 | }; | |
2406 | ||
2407 | static bfd_boolean elf32_arm_use_long_plt_entry = FALSE; | |
2408 | ||
eed94f8f NC |
2409 | #endif /* not FOUR_WORD_PLT */ |
2410 | ||
2411 | /* The first entry in a procedure linkage table looks like this. | |
2412 | It is set up so that any shared library function that is called before the | |
2413 | relocation has been set up calls the dynamic linker first. */ | |
2414 | static const bfd_vma elf32_thumb2_plt0_entry [] = | |
2415 | { | |
2416 | /* NOTE: As this is a mixture of 16-bit and 32-bit instructions, | |
2417 | an instruction maybe encoded to one or two array elements. */ | |
07d6d2b8 AM |
2418 | 0xf8dfb500, /* push {lr} */ |
2419 | 0x44fee008, /* ldr.w lr, [pc, #8] */ | |
2420 | /* add lr, pc */ | |
eed94f8f | 2421 | 0xff08f85e, /* ldr.w pc, [lr, #8]! */ |
07d6d2b8 | 2422 | 0x00000000, /* &GOT[0] - . */ |
eed94f8f NC |
2423 | }; |
2424 | ||
2425 | /* Subsequent entries in a procedure linkage table for thumb only target | |
2426 | look like this. */ | |
2427 | static const bfd_vma elf32_thumb2_plt_entry [] = | |
2428 | { | |
2429 | /* NOTE: As this is a mixture of 16-bit and 32-bit instructions, | |
2430 | an instruction maybe encoded to one or two array elements. */ | |
07d6d2b8 AM |
2431 | 0x0c00f240, /* movw ip, #0xNNNN */ |
2432 | 0x0c00f2c0, /* movt ip, #0xNNNN */ | |
2433 | 0xf8dc44fc, /* add ip, pc */ | |
2434 | 0xbf00f000 /* ldr.w pc, [ip] */ | |
2435 | /* nop */ | |
eed94f8f | 2436 | }; |
252b5132 | 2437 | |
00a97672 RS |
2438 | /* The format of the first entry in the procedure linkage table |
2439 | for a VxWorks executable. */ | |
2440 | static const bfd_vma elf32_arm_vxworks_exec_plt0_entry[] = | |
b38cadfb | 2441 | { |
07d6d2b8 AM |
2442 | 0xe52dc008, /* str ip,[sp,#-8]! */ |
2443 | 0xe59fc000, /* ldr ip,[pc] */ | |
2444 | 0xe59cf008, /* ldr pc,[ip,#8] */ | |
2445 | 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */ | |
b38cadfb | 2446 | }; |
00a97672 RS |
2447 | |
2448 | /* The format of subsequent entries in a VxWorks executable. */ | |
2449 | static const bfd_vma elf32_arm_vxworks_exec_plt_entry[] = | |
b38cadfb | 2450 | { |
07d6d2b8 AM |
2451 | 0xe59fc000, /* ldr ip,[pc] */ |
2452 | 0xe59cf000, /* ldr pc,[ip] */ | |
2453 | 0x00000000, /* .long @got */ | |
2454 | 0xe59fc000, /* ldr ip,[pc] */ | |
2455 | 0xea000000, /* b _PLT */ | |
2456 | 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */ | |
b38cadfb | 2457 | }; |
00a97672 RS |
2458 | |
2459 | /* The format of entries in a VxWorks shared library. */ | |
2460 | static const bfd_vma elf32_arm_vxworks_shared_plt_entry[] = | |
b38cadfb | 2461 | { |
07d6d2b8 AM |
2462 | 0xe59fc000, /* ldr ip,[pc] */ |
2463 | 0xe79cf009, /* ldr pc,[ip,r9] */ | |
2464 | 0x00000000, /* .long @got */ | |
2465 | 0xe59fc000, /* ldr ip,[pc] */ | |
2466 | 0xe599f008, /* ldr pc,[r9,#8] */ | |
2467 | 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */ | |
b38cadfb | 2468 | }; |
00a97672 | 2469 | |
b7693d02 DJ |
2470 | /* An initial stub used if the PLT entry is referenced from Thumb code. */ |
2471 | #define PLT_THUMB_STUB_SIZE 4 | |
2472 | static const bfd_vma elf32_arm_plt_thumb_stub [] = | |
b38cadfb NC |
2473 | { |
2474 | 0x4778, /* bx pc */ | |
2475 | 0x46c0 /* nop */ | |
2476 | }; | |
b7693d02 | 2477 | |
e5a52504 MM |
2478 | /* The entries in a PLT when using a DLL-based target with multiple |
2479 | address spaces. */ | |
906e58ca | 2480 | static const bfd_vma elf32_arm_symbian_plt_entry [] = |
b38cadfb | 2481 | { |
07d6d2b8 AM |
2482 | 0xe51ff004, /* ldr pc, [pc, #-4] */ |
2483 | 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */ | |
b38cadfb NC |
2484 | }; |
2485 | ||
2486 | /* The first entry in a procedure linkage table looks like | |
2487 | this. It is set up so that any shared library function that is | |
2488 | called before the relocation has been set up calls the dynamic | |
2489 | linker first. */ | |
2490 | static const bfd_vma elf32_arm_nacl_plt0_entry [] = | |
2491 | { | |
2492 | /* First bundle: */ | |
2493 | 0xe300c000, /* movw ip, #:lower16:&GOT[2]-.+8 */ | |
2494 | 0xe340c000, /* movt ip, #:upper16:&GOT[2]-.+8 */ | |
2495 | 0xe08cc00f, /* add ip, ip, pc */ | |
2496 | 0xe52dc008, /* str ip, [sp, #-8]! */ | |
2497 | /* Second bundle: */ | |
edccdf7c RM |
2498 | 0xe3ccc103, /* bic ip, ip, #0xc0000000 */ |
2499 | 0xe59cc000, /* ldr ip, [ip] */ | |
b38cadfb | 2500 | 0xe3ccc13f, /* bic ip, ip, #0xc000000f */ |
edccdf7c | 2501 | 0xe12fff1c, /* bx ip */ |
b38cadfb | 2502 | /* Third bundle: */ |
edccdf7c RM |
2503 | 0xe320f000, /* nop */ |
2504 | 0xe320f000, /* nop */ | |
2505 | 0xe320f000, /* nop */ | |
b38cadfb NC |
2506 | /* .Lplt_tail: */ |
2507 | 0xe50dc004, /* str ip, [sp, #-4] */ | |
2508 | /* Fourth bundle: */ | |
edccdf7c RM |
2509 | 0xe3ccc103, /* bic ip, ip, #0xc0000000 */ |
2510 | 0xe59cc000, /* ldr ip, [ip] */ | |
b38cadfb | 2511 | 0xe3ccc13f, /* bic ip, ip, #0xc000000f */ |
edccdf7c | 2512 | 0xe12fff1c, /* bx ip */ |
b38cadfb NC |
2513 | }; |
2514 | #define ARM_NACL_PLT_TAIL_OFFSET (11 * 4) | |
2515 | ||
2516 | /* Subsequent entries in a procedure linkage table look like this. */ | |
2517 | static const bfd_vma elf32_arm_nacl_plt_entry [] = | |
2518 | { | |
2519 | 0xe300c000, /* movw ip, #:lower16:&GOT[n]-.+8 */ | |
2520 | 0xe340c000, /* movt ip, #:upper16:&GOT[n]-.+8 */ | |
2521 | 0xe08cc00f, /* add ip, ip, pc */ | |
2522 | 0xea000000, /* b .Lplt_tail */ | |
2523 | }; | |
e5a52504 | 2524 | |
906e58ca NC |
2525 | #define ARM_MAX_FWD_BRANCH_OFFSET ((((1 << 23) - 1) << 2) + 8) |
2526 | #define ARM_MAX_BWD_BRANCH_OFFSET ((-((1 << 23) << 2)) + 8) | |
2527 | #define THM_MAX_FWD_BRANCH_OFFSET ((1 << 22) -2 + 4) | |
2528 | #define THM_MAX_BWD_BRANCH_OFFSET (-(1 << 22) + 4) | |
2529 | #define THM2_MAX_FWD_BRANCH_OFFSET (((1 << 24) - 2) + 4) | |
2530 | #define THM2_MAX_BWD_BRANCH_OFFSET (-(1 << 24) + 4) | |
c5423981 TG |
2531 | #define THM2_MAX_FWD_COND_BRANCH_OFFSET (((1 << 20) -2) + 4) |
2532 | #define THM2_MAX_BWD_COND_BRANCH_OFFSET (-(1 << 20) + 4) | |
906e58ca | 2533 | |
461a49ca | 2534 | enum stub_insn_type |
b38cadfb NC |
2535 | { |
2536 | THUMB16_TYPE = 1, | |
2537 | THUMB32_TYPE, | |
2538 | ARM_TYPE, | |
2539 | DATA_TYPE | |
2540 | }; | |
461a49ca | 2541 | |
48229727 JB |
2542 | #define THUMB16_INSN(X) {(X), THUMB16_TYPE, R_ARM_NONE, 0} |
2543 | /* A bit of a hack. A Thumb conditional branch, in which the proper condition | |
2544 | is inserted in arm_build_one_stub(). */ | |
2545 | #define THUMB16_BCOND_INSN(X) {(X), THUMB16_TYPE, R_ARM_NONE, 1} | |
2546 | #define THUMB32_INSN(X) {(X), THUMB32_TYPE, R_ARM_NONE, 0} | |
d5a67c02 AV |
2547 | #define THUMB32_MOVT(X) {(X), THUMB32_TYPE, R_ARM_THM_MOVT_ABS, 0} |
2548 | #define THUMB32_MOVW(X) {(X), THUMB32_TYPE, R_ARM_THM_MOVW_ABS_NC, 0} | |
48229727 JB |
2549 | #define THUMB32_B_INSN(X, Z) {(X), THUMB32_TYPE, R_ARM_THM_JUMP24, (Z)} |
2550 | #define ARM_INSN(X) {(X), ARM_TYPE, R_ARM_NONE, 0} | |
2551 | #define ARM_REL_INSN(X, Z) {(X), ARM_TYPE, R_ARM_JUMP24, (Z)} | |
2552 | #define DATA_WORD(X,Y,Z) {(X), DATA_TYPE, (Y), (Z)} | |
461a49ca DJ |
2553 | |
2554 | typedef struct | |
2555 | { | |
07d6d2b8 | 2556 | bfd_vma data; |
b38cadfb | 2557 | enum stub_insn_type type; |
07d6d2b8 AM |
2558 | unsigned int r_type; |
2559 | int reloc_addend; | |
461a49ca DJ |
2560 | } insn_sequence; |
2561 | ||
fea2b4d6 CL |
2562 | /* Arm/Thumb -> Arm/Thumb long branch stub. On V5T and above, use blx |
2563 | to reach the stub if necessary. */ | |
461a49ca | 2564 | static const insn_sequence elf32_arm_stub_long_branch_any_any[] = |
b38cadfb | 2565 | { |
07d6d2b8 | 2566 | ARM_INSN (0xe51ff004), /* ldr pc, [pc, #-4] */ |
b38cadfb NC |
2567 | DATA_WORD (0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */ |
2568 | }; | |
906e58ca | 2569 | |
fea2b4d6 CL |
2570 | /* V4T Arm -> Thumb long branch stub. Used on V4T where blx is not |
2571 | available. */ | |
461a49ca | 2572 | static const insn_sequence elf32_arm_stub_long_branch_v4t_arm_thumb[] = |
b38cadfb | 2573 | { |
07d6d2b8 AM |
2574 | ARM_INSN (0xe59fc000), /* ldr ip, [pc, #0] */ |
2575 | ARM_INSN (0xe12fff1c), /* bx ip */ | |
b38cadfb NC |
2576 | DATA_WORD (0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */ |
2577 | }; | |
906e58ca | 2578 | |
d3626fb0 | 2579 | /* Thumb -> Thumb long branch stub. Used on M-profile architectures. */ |
461a49ca | 2580 | static const insn_sequence elf32_arm_stub_long_branch_thumb_only[] = |
b38cadfb | 2581 | { |
07d6d2b8 AM |
2582 | THUMB16_INSN (0xb401), /* push {r0} */ |
2583 | THUMB16_INSN (0x4802), /* ldr r0, [pc, #8] */ | |
2584 | THUMB16_INSN (0x4684), /* mov ip, r0 */ | |
2585 | THUMB16_INSN (0xbc01), /* pop {r0} */ | |
2586 | THUMB16_INSN (0x4760), /* bx ip */ | |
2587 | THUMB16_INSN (0xbf00), /* nop */ | |
b38cadfb NC |
2588 | DATA_WORD (0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */ |
2589 | }; | |
906e58ca | 2590 | |
80c135e5 TP |
2591 | /* Thumb -> Thumb long branch stub in thumb2 encoding. Used on armv7. */ |
2592 | static const insn_sequence elf32_arm_stub_long_branch_thumb2_only[] = | |
2593 | { | |
07d6d2b8 | 2594 | THUMB32_INSN (0xf85ff000), /* ldr.w pc, [pc, #-0] */ |
80c135e5 TP |
2595 | DATA_WORD (0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(x) */ |
2596 | }; | |
2597 | ||
d5a67c02 AV |
2598 | /* Thumb -> Thumb long branch stub. Used for PureCode sections on Thumb2 |
2599 | M-profile architectures. */ | |
2600 | static const insn_sequence elf32_arm_stub_long_branch_thumb2_only_pure[] = | |
2601 | { | |
2602 | THUMB32_MOVW (0xf2400c00), /* mov.w ip, R_ARM_MOVW_ABS_NC */ | |
2603 | THUMB32_MOVT (0xf2c00c00), /* movt ip, R_ARM_MOVT_ABS << 16 */ | |
07d6d2b8 | 2604 | THUMB16_INSN (0x4760), /* bx ip */ |
d5a67c02 AV |
2605 | }; |
2606 | ||
d3626fb0 CL |
2607 | /* V4T Thumb -> Thumb long branch stub. Using the stack is not |
2608 | allowed. */ | |
2609 | static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_thumb[] = | |
b38cadfb | 2610 | { |
07d6d2b8 AM |
2611 | THUMB16_INSN (0x4778), /* bx pc */ |
2612 | THUMB16_INSN (0x46c0), /* nop */ | |
2613 | ARM_INSN (0xe59fc000), /* ldr ip, [pc, #0] */ | |
2614 | ARM_INSN (0xe12fff1c), /* bx ip */ | |
b38cadfb NC |
2615 | DATA_WORD (0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */ |
2616 | }; | |
d3626fb0 | 2617 | |
fea2b4d6 CL |
2618 | /* V4T Thumb -> ARM long branch stub. Used on V4T where blx is not |
2619 | available. */ | |
461a49ca | 2620 | static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_arm[] = |
b38cadfb | 2621 | { |
07d6d2b8 AM |
2622 | THUMB16_INSN (0x4778), /* bx pc */ |
2623 | THUMB16_INSN (0x46c0), /* nop */ | |
2624 | ARM_INSN (0xe51ff004), /* ldr pc, [pc, #-4] */ | |
b38cadfb NC |
2625 | DATA_WORD (0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */ |
2626 | }; | |
906e58ca | 2627 | |
fea2b4d6 CL |
2628 | /* V4T Thumb -> ARM short branch stub. Shorter variant of the above |
2629 | one, when the destination is close enough. */ | |
461a49ca | 2630 | static const insn_sequence elf32_arm_stub_short_branch_v4t_thumb_arm[] = |
b38cadfb | 2631 | { |
07d6d2b8 AM |
2632 | THUMB16_INSN (0x4778), /* bx pc */ |
2633 | THUMB16_INSN (0x46c0), /* nop */ | |
b38cadfb NC |
2634 | ARM_REL_INSN (0xea000000, -8), /* b (X-8) */ |
2635 | }; | |
c820be07 | 2636 | |
cf3eccff | 2637 | /* ARM/Thumb -> ARM long branch stub, PIC. On V5T and above, use |
fea2b4d6 | 2638 | blx to reach the stub if necessary. */ |
cf3eccff | 2639 | static const insn_sequence elf32_arm_stub_long_branch_any_arm_pic[] = |
b38cadfb | 2640 | { |
07d6d2b8 AM |
2641 | ARM_INSN (0xe59fc000), /* ldr ip, [pc] */ |
2642 | ARM_INSN (0xe08ff00c), /* add pc, pc, ip */ | |
b38cadfb NC |
2643 | DATA_WORD (0, R_ARM_REL32, -4), /* dcd R_ARM_REL32(X-4) */ |
2644 | }; | |
906e58ca | 2645 | |
cf3eccff DJ |
2646 | /* ARM/Thumb -> Thumb long branch stub, PIC. On V5T and above, use |
2647 | blx to reach the stub if necessary. We can not add into pc; | |
2648 | it is not guaranteed to mode switch (different in ARMv6 and | |
2649 | ARMv7). */ | |
2650 | static const insn_sequence elf32_arm_stub_long_branch_any_thumb_pic[] = | |
b38cadfb | 2651 | { |
07d6d2b8 AM |
2652 | ARM_INSN (0xe59fc004), /* ldr ip, [pc, #4] */ |
2653 | ARM_INSN (0xe08fc00c), /* add ip, pc, ip */ | |
2654 | ARM_INSN (0xe12fff1c), /* bx ip */ | |
b38cadfb NC |
2655 | DATA_WORD (0, R_ARM_REL32, 0), /* dcd R_ARM_REL32(X) */ |
2656 | }; | |
cf3eccff | 2657 | |
ebe24dd4 CL |
2658 | /* V4T ARM -> ARM long branch stub, PIC. */ |
2659 | static const insn_sequence elf32_arm_stub_long_branch_v4t_arm_thumb_pic[] = | |
b38cadfb | 2660 | { |
07d6d2b8 AM |
2661 | ARM_INSN (0xe59fc004), /* ldr ip, [pc, #4] */ |
2662 | ARM_INSN (0xe08fc00c), /* add ip, pc, ip */ | |
2663 | ARM_INSN (0xe12fff1c), /* bx ip */ | |
b38cadfb NC |
2664 | DATA_WORD (0, R_ARM_REL32, 0), /* dcd R_ARM_REL32(X) */ |
2665 | }; | |
ebe24dd4 CL |
2666 | |
2667 | /* V4T Thumb -> ARM long branch stub, PIC. */ | |
2668 | static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_arm_pic[] = | |
b38cadfb | 2669 | { |
07d6d2b8 AM |
2670 | THUMB16_INSN (0x4778), /* bx pc */ |
2671 | THUMB16_INSN (0x46c0), /* nop */ | |
2672 | ARM_INSN (0xe59fc000), /* ldr ip, [pc, #0] */ | |
2673 | ARM_INSN (0xe08cf00f), /* add pc, ip, pc */ | |
b38cadfb NC |
2674 | DATA_WORD (0, R_ARM_REL32, -4), /* dcd R_ARM_REL32(X) */ |
2675 | }; | |
ebe24dd4 | 2676 | |
d3626fb0 CL |
2677 | /* Thumb -> Thumb long branch stub, PIC. Used on M-profile |
2678 | architectures. */ | |
ebe24dd4 | 2679 | static const insn_sequence elf32_arm_stub_long_branch_thumb_only_pic[] = |
b38cadfb | 2680 | { |
07d6d2b8 AM |
2681 | THUMB16_INSN (0xb401), /* push {r0} */ |
2682 | THUMB16_INSN (0x4802), /* ldr r0, [pc, #8] */ | |
2683 | THUMB16_INSN (0x46fc), /* mov ip, pc */ | |
2684 | THUMB16_INSN (0x4484), /* add ip, r0 */ | |
2685 | THUMB16_INSN (0xbc01), /* pop {r0} */ | |
2686 | THUMB16_INSN (0x4760), /* bx ip */ | |
b38cadfb NC |
2687 | DATA_WORD (0, R_ARM_REL32, 4), /* dcd R_ARM_REL32(X) */ |
2688 | }; | |
ebe24dd4 | 2689 | |
d3626fb0 CL |
2690 | /* V4T Thumb -> Thumb long branch stub, PIC. Using the stack is not |
2691 | allowed. */ | |
2692 | static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_thumb_pic[] = | |
b38cadfb | 2693 | { |
07d6d2b8 AM |
2694 | THUMB16_INSN (0x4778), /* bx pc */ |
2695 | THUMB16_INSN (0x46c0), /* nop */ | |
2696 | ARM_INSN (0xe59fc004), /* ldr ip, [pc, #4] */ | |
2697 | ARM_INSN (0xe08fc00c), /* add ip, pc, ip */ | |
2698 | ARM_INSN (0xe12fff1c), /* bx ip */ | |
b38cadfb NC |
2699 | DATA_WORD (0, R_ARM_REL32, 0), /* dcd R_ARM_REL32(X) */ |
2700 | }; | |
d3626fb0 | 2701 | |
0855e32b NS |
2702 | /* Thumb2/ARM -> TLS trampoline. Lowest common denominator, which is a |
2703 | long PIC stub. We can use r1 as a scratch -- and cannot use ip. */ | |
2704 | static const insn_sequence elf32_arm_stub_long_branch_any_tls_pic[] = | |
2705 | { | |
07d6d2b8 AM |
2706 | ARM_INSN (0xe59f1000), /* ldr r1, [pc] */ |
2707 | ARM_INSN (0xe08ff001), /* add pc, pc, r1 */ | |
b38cadfb | 2708 | DATA_WORD (0, R_ARM_REL32, -4), /* dcd R_ARM_REL32(X-4) */ |
0855e32b NS |
2709 | }; |
2710 | ||
2711 | /* V4T Thumb -> TLS trampoline. lowest common denominator, which is a | |
2712 | long PIC stub. We can use r1 as a scratch -- and cannot use ip. */ | |
2713 | static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_tls_pic[] = | |
2714 | { | |
07d6d2b8 AM |
2715 | THUMB16_INSN (0x4778), /* bx pc */ |
2716 | THUMB16_INSN (0x46c0), /* nop */ | |
2717 | ARM_INSN (0xe59f1000), /* ldr r1, [pc, #0] */ | |
2718 | ARM_INSN (0xe081f00f), /* add pc, r1, pc */ | |
b38cadfb | 2719 | DATA_WORD (0, R_ARM_REL32, -4), /* dcd R_ARM_REL32(X) */ |
0855e32b NS |
2720 | }; |
2721 | ||
7a89b94e NC |
2722 | /* NaCl ARM -> ARM long branch stub. */ |
2723 | static const insn_sequence elf32_arm_stub_long_branch_arm_nacl[] = | |
2724 | { | |
2725 | ARM_INSN (0xe59fc00c), /* ldr ip, [pc, #12] */ | |
2726 | ARM_INSN (0xe3ccc13f), /* bic ip, ip, #0xc000000f */ | |
07d6d2b8 AM |
2727 | ARM_INSN (0xe12fff1c), /* bx ip */ |
2728 | ARM_INSN (0xe320f000), /* nop */ | |
2729 | ARM_INSN (0xe125be70), /* bkpt 0x5be0 */ | |
2730 | DATA_WORD (0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */ | |
2731 | DATA_WORD (0, R_ARM_NONE, 0), /* .word 0 */ | |
2732 | DATA_WORD (0, R_ARM_NONE, 0), /* .word 0 */ | |
7a89b94e NC |
2733 | }; |
2734 | ||
2735 | /* NaCl ARM -> ARM long branch stub, PIC. */ | |
2736 | static const insn_sequence elf32_arm_stub_long_branch_arm_nacl_pic[] = | |
2737 | { | |
2738 | ARM_INSN (0xe59fc00c), /* ldr ip, [pc, #12] */ | |
07d6d2b8 | 2739 | ARM_INSN (0xe08cc00f), /* add ip, ip, pc */ |
7a89b94e | 2740 | ARM_INSN (0xe3ccc13f), /* bic ip, ip, #0xc000000f */ |
07d6d2b8 AM |
2741 | ARM_INSN (0xe12fff1c), /* bx ip */ |
2742 | ARM_INSN (0xe125be70), /* bkpt 0x5be0 */ | |
2743 | DATA_WORD (0, R_ARM_REL32, 8), /* dcd R_ARM_REL32(X+8) */ | |
2744 | DATA_WORD (0, R_ARM_NONE, 0), /* .word 0 */ | |
2745 | DATA_WORD (0, R_ARM_NONE, 0), /* .word 0 */ | |
7a89b94e NC |
2746 | }; |
2747 | ||
4ba2ef8f TP |
2748 | /* Stub used for transition to secure state (aka SG veneer). */ |
2749 | static const insn_sequence elf32_arm_stub_cmse_branch_thumb_only[] = | |
2750 | { | |
2751 | THUMB32_INSN (0xe97fe97f), /* sg. */ | |
2752 | THUMB32_B_INSN (0xf000b800, -4), /* b.w original_branch_dest. */ | |
2753 | }; | |
2754 | ||
7a89b94e | 2755 | |
48229727 JB |
2756 | /* Cortex-A8 erratum-workaround stubs. */ |
2757 | ||
2758 | /* Stub used for conditional branches (which may be beyond +/-1MB away, so we | |
2759 | can't use a conditional branch to reach this stub). */ | |
2760 | ||
2761 | static const insn_sequence elf32_arm_stub_a8_veneer_b_cond[] = | |
b38cadfb | 2762 | { |
07d6d2b8 | 2763 | THUMB16_BCOND_INSN (0xd001), /* b<cond>.n true. */ |
b38cadfb NC |
2764 | THUMB32_B_INSN (0xf000b800, -4), /* b.w insn_after_original_branch. */ |
2765 | THUMB32_B_INSN (0xf000b800, -4) /* true: b.w original_branch_dest. */ | |
2766 | }; | |
48229727 JB |
2767 | |
2768 | /* Stub used for b.w and bl.w instructions. */ | |
2769 | ||
2770 | static const insn_sequence elf32_arm_stub_a8_veneer_b[] = | |
b38cadfb NC |
2771 | { |
2772 | THUMB32_B_INSN (0xf000b800, -4) /* b.w original_branch_dest. */ | |
2773 | }; | |
48229727 JB |
2774 | |
2775 | static const insn_sequence elf32_arm_stub_a8_veneer_bl[] = | |
b38cadfb NC |
2776 | { |
2777 | THUMB32_B_INSN (0xf000b800, -4) /* b.w original_branch_dest. */ | |
2778 | }; | |
48229727 JB |
2779 | |
2780 | /* Stub used for Thumb-2 blx.w instructions. We modified the original blx.w | |
2781 | instruction (which switches to ARM mode) to point to this stub. Jump to the | |
2782 | real destination using an ARM-mode branch. */ | |
2783 | ||
2784 | static const insn_sequence elf32_arm_stub_a8_veneer_blx[] = | |
b38cadfb NC |
2785 | { |
2786 | ARM_REL_INSN (0xea000000, -8) /* b original_branch_dest. */ | |
2787 | }; | |
48229727 | 2788 | |
9553db3c NC |
2789 | /* For each section group there can be a specially created linker section |
2790 | to hold the stubs for that group. The name of the stub section is based | |
2791 | upon the name of another section within that group with the suffix below | |
2792 | applied. | |
2793 | ||
2794 | PR 13049: STUB_SUFFIX used to be ".stub", but this allowed the user to | |
2795 | create what appeared to be a linker stub section when it actually | |
2796 | contained user code/data. For example, consider this fragment: | |
b38cadfb | 2797 | |
9553db3c NC |
2798 | const char * stubborn_problems[] = { "np" }; |
2799 | ||
2800 | If this is compiled with "-fPIC -fdata-sections" then gcc produces a | |
2801 | section called: | |
2802 | ||
2803 | .data.rel.local.stubborn_problems | |
2804 | ||
2805 | This then causes problems in arm32_arm_build_stubs() as it triggers: | |
2806 | ||
2807 | // Ignore non-stub sections. | |
2808 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
2809 | continue; | |
2810 | ||
2811 | And so the section would be ignored instead of being processed. Hence | |
2812 | the change in definition of STUB_SUFFIX to a name that cannot be a valid | |
2813 | C identifier. */ | |
2814 | #define STUB_SUFFIX ".__stub" | |
906e58ca | 2815 | |
738a79f6 CL |
2816 | /* One entry per long/short branch stub defined above. */ |
2817 | #define DEF_STUBS \ | |
2818 | DEF_STUB(long_branch_any_any) \ | |
2819 | DEF_STUB(long_branch_v4t_arm_thumb) \ | |
2820 | DEF_STUB(long_branch_thumb_only) \ | |
2821 | DEF_STUB(long_branch_v4t_thumb_thumb) \ | |
2822 | DEF_STUB(long_branch_v4t_thumb_arm) \ | |
2823 | DEF_STUB(short_branch_v4t_thumb_arm) \ | |
2824 | DEF_STUB(long_branch_any_arm_pic) \ | |
2825 | DEF_STUB(long_branch_any_thumb_pic) \ | |
2826 | DEF_STUB(long_branch_v4t_thumb_thumb_pic) \ | |
2827 | DEF_STUB(long_branch_v4t_arm_thumb_pic) \ | |
2828 | DEF_STUB(long_branch_v4t_thumb_arm_pic) \ | |
48229727 | 2829 | DEF_STUB(long_branch_thumb_only_pic) \ |
0855e32b NS |
2830 | DEF_STUB(long_branch_any_tls_pic) \ |
2831 | DEF_STUB(long_branch_v4t_thumb_tls_pic) \ | |
7a89b94e NC |
2832 | DEF_STUB(long_branch_arm_nacl) \ |
2833 | DEF_STUB(long_branch_arm_nacl_pic) \ | |
4ba2ef8f | 2834 | DEF_STUB(cmse_branch_thumb_only) \ |
48229727 JB |
2835 | DEF_STUB(a8_veneer_b_cond) \ |
2836 | DEF_STUB(a8_veneer_b) \ | |
2837 | DEF_STUB(a8_veneer_bl) \ | |
80c135e5 TP |
2838 | DEF_STUB(a8_veneer_blx) \ |
2839 | DEF_STUB(long_branch_thumb2_only) \ | |
d5a67c02 | 2840 | DEF_STUB(long_branch_thumb2_only_pure) |
738a79f6 CL |
2841 | |
2842 | #define DEF_STUB(x) arm_stub_##x, | |
b38cadfb NC |
2843 | enum elf32_arm_stub_type |
2844 | { | |
906e58ca | 2845 | arm_stub_none, |
738a79f6 | 2846 | DEF_STUBS |
4f4faa4d | 2847 | max_stub_type |
738a79f6 CL |
2848 | }; |
2849 | #undef DEF_STUB | |
2850 | ||
8d9d9490 TP |
2851 | /* Note the first a8_veneer type. */ |
2852 | const unsigned arm_stub_a8_veneer_lwm = arm_stub_a8_veneer_b_cond; | |
2853 | ||
738a79f6 CL |
2854 | typedef struct |
2855 | { | |
d3ce72d0 | 2856 | const insn_sequence* template_sequence; |
738a79f6 CL |
2857 | int template_size; |
2858 | } stub_def; | |
2859 | ||
2860 | #define DEF_STUB(x) {elf32_arm_stub_##x, ARRAY_SIZE(elf32_arm_stub_##x)}, | |
b38cadfb NC |
2861 | static const stub_def stub_definitions[] = |
2862 | { | |
738a79f6 CL |
2863 | {NULL, 0}, |
2864 | DEF_STUBS | |
906e58ca NC |
2865 | }; |
2866 | ||
2867 | struct elf32_arm_stub_hash_entry | |
2868 | { | |
2869 | /* Base hash table entry structure. */ | |
2870 | struct bfd_hash_entry root; | |
2871 | ||
2872 | /* The stub section. */ | |
2873 | asection *stub_sec; | |
2874 | ||
2875 | /* Offset within stub_sec of the beginning of this stub. */ | |
2876 | bfd_vma stub_offset; | |
2877 | ||
2878 | /* Given the symbol's value and its section we can determine its final | |
2879 | value when building the stubs (so the stub knows where to jump). */ | |
2880 | bfd_vma target_value; | |
2881 | asection *target_section; | |
2882 | ||
8d9d9490 TP |
2883 | /* Same as above but for the source of the branch to the stub. Used for |
2884 | Cortex-A8 erratum workaround to patch it to branch to the stub. As | |
2885 | such, source section does not need to be recorded since Cortex-A8 erratum | |
2886 | workaround stubs are only generated when both source and target are in the | |
2887 | same section. */ | |
2888 | bfd_vma source_value; | |
48229727 JB |
2889 | |
2890 | /* The instruction which caused this stub to be generated (only valid for | |
2891 | Cortex-A8 erratum workaround stubs at present). */ | |
2892 | unsigned long orig_insn; | |
2893 | ||
461a49ca | 2894 | /* The stub type. */ |
906e58ca | 2895 | enum elf32_arm_stub_type stub_type; |
461a49ca DJ |
2896 | /* Its encoding size in bytes. */ |
2897 | int stub_size; | |
2898 | /* Its template. */ | |
2899 | const insn_sequence *stub_template; | |
2900 | /* The size of the template (number of entries). */ | |
2901 | int stub_template_size; | |
906e58ca NC |
2902 | |
2903 | /* The symbol table entry, if any, that this was derived from. */ | |
2904 | struct elf32_arm_link_hash_entry *h; | |
2905 | ||
35fc36a8 RS |
2906 | /* Type of branch. */ |
2907 | enum arm_st_branch_type branch_type; | |
906e58ca NC |
2908 | |
2909 | /* Where this stub is being called from, or, in the case of combined | |
2910 | stub sections, the first input section in the group. */ | |
2911 | asection *id_sec; | |
7413f23f DJ |
2912 | |
2913 | /* The name for the local symbol at the start of this stub. The | |
2914 | stub name in the hash table has to be unique; this does not, so | |
2915 | it can be friendlier. */ | |
2916 | char *output_name; | |
906e58ca NC |
2917 | }; |
2918 | ||
e489d0ae PB |
2919 | /* Used to build a map of a section. This is required for mixed-endian |
2920 | code/data. */ | |
2921 | ||
2922 | typedef struct elf32_elf_section_map | |
2923 | { | |
2924 | bfd_vma vma; | |
2925 | char type; | |
2926 | } | |
2927 | elf32_arm_section_map; | |
2928 | ||
c7b8f16e JB |
2929 | /* Information about a VFP11 erratum veneer, or a branch to such a veneer. */ |
2930 | ||
2931 | typedef enum | |
2932 | { | |
2933 | VFP11_ERRATUM_BRANCH_TO_ARM_VENEER, | |
2934 | VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER, | |
2935 | VFP11_ERRATUM_ARM_VENEER, | |
2936 | VFP11_ERRATUM_THUMB_VENEER | |
2937 | } | |
2938 | elf32_vfp11_erratum_type; | |
2939 | ||
2940 | typedef struct elf32_vfp11_erratum_list | |
2941 | { | |
2942 | struct elf32_vfp11_erratum_list *next; | |
2943 | bfd_vma vma; | |
2944 | union | |
2945 | { | |
2946 | struct | |
2947 | { | |
2948 | struct elf32_vfp11_erratum_list *veneer; | |
2949 | unsigned int vfp_insn; | |
2950 | } b; | |
2951 | struct | |
2952 | { | |
2953 | struct elf32_vfp11_erratum_list *branch; | |
2954 | unsigned int id; | |
2955 | } v; | |
2956 | } u; | |
2957 | elf32_vfp11_erratum_type type; | |
2958 | } | |
2959 | elf32_vfp11_erratum_list; | |
2960 | ||
a504d23a LA |
2961 | /* Information about a STM32L4XX erratum veneer, or a branch to such a |
2962 | veneer. */ | |
2963 | typedef enum | |
2964 | { | |
2965 | STM32L4XX_ERRATUM_BRANCH_TO_VENEER, | |
2966 | STM32L4XX_ERRATUM_VENEER | |
2967 | } | |
2968 | elf32_stm32l4xx_erratum_type; | |
2969 | ||
2970 | typedef struct elf32_stm32l4xx_erratum_list | |
2971 | { | |
2972 | struct elf32_stm32l4xx_erratum_list *next; | |
2973 | bfd_vma vma; | |
2974 | union | |
2975 | { | |
2976 | struct | |
2977 | { | |
2978 | struct elf32_stm32l4xx_erratum_list *veneer; | |
2979 | unsigned int insn; | |
2980 | } b; | |
2981 | struct | |
2982 | { | |
2983 | struct elf32_stm32l4xx_erratum_list *branch; | |
2984 | unsigned int id; | |
2985 | } v; | |
2986 | } u; | |
2987 | elf32_stm32l4xx_erratum_type type; | |
2988 | } | |
2989 | elf32_stm32l4xx_erratum_list; | |
2990 | ||
2468f9c9 PB |
2991 | typedef enum |
2992 | { | |
2993 | DELETE_EXIDX_ENTRY, | |
2994 | INSERT_EXIDX_CANTUNWIND_AT_END | |
2995 | } | |
2996 | arm_unwind_edit_type; | |
2997 | ||
2998 | /* A (sorted) list of edits to apply to an unwind table. */ | |
2999 | typedef struct arm_unwind_table_edit | |
3000 | { | |
3001 | arm_unwind_edit_type type; | |
3002 | /* Note: we sometimes want to insert an unwind entry corresponding to a | |
3003 | section different from the one we're currently writing out, so record the | |
3004 | (text) section this edit relates to here. */ | |
3005 | asection *linked_section; | |
3006 | unsigned int index; | |
3007 | struct arm_unwind_table_edit *next; | |
3008 | } | |
3009 | arm_unwind_table_edit; | |
3010 | ||
8e3de13a | 3011 | typedef struct _arm_elf_section_data |
e489d0ae | 3012 | { |
2468f9c9 | 3013 | /* Information about mapping symbols. */ |
e489d0ae | 3014 | struct bfd_elf_section_data elf; |
8e3de13a | 3015 | unsigned int mapcount; |
c7b8f16e | 3016 | unsigned int mapsize; |
e489d0ae | 3017 | elf32_arm_section_map *map; |
2468f9c9 | 3018 | /* Information about CPU errata. */ |
c7b8f16e JB |
3019 | unsigned int erratumcount; |
3020 | elf32_vfp11_erratum_list *erratumlist; | |
a504d23a LA |
3021 | unsigned int stm32l4xx_erratumcount; |
3022 | elf32_stm32l4xx_erratum_list *stm32l4xx_erratumlist; | |
491d01d3 | 3023 | unsigned int additional_reloc_count; |
2468f9c9 PB |
3024 | /* Information about unwind tables. */ |
3025 | union | |
3026 | { | |
3027 | /* Unwind info attached to a text section. */ | |
3028 | struct | |
3029 | { | |
3030 | asection *arm_exidx_sec; | |
3031 | } text; | |
3032 | ||
3033 | /* Unwind info attached to an .ARM.exidx section. */ | |
3034 | struct | |
3035 | { | |
3036 | arm_unwind_table_edit *unwind_edit_list; | |
3037 | arm_unwind_table_edit *unwind_edit_tail; | |
3038 | } exidx; | |
3039 | } u; | |
8e3de13a NC |
3040 | } |
3041 | _arm_elf_section_data; | |
e489d0ae PB |
3042 | |
3043 | #define elf32_arm_section_data(sec) \ | |
8e3de13a | 3044 | ((_arm_elf_section_data *) elf_section_data (sec)) |
e489d0ae | 3045 | |
48229727 JB |
3046 | /* A fix which might be required for Cortex-A8 Thumb-2 branch/TLB erratum. |
3047 | These fixes are subject to a relaxation procedure (in elf32_arm_size_stubs), | |
3048 | so may be created multiple times: we use an array of these entries whilst | |
3049 | relaxing which we can refresh easily, then create stubs for each potentially | |
3050 | erratum-triggering instruction once we've settled on a solution. */ | |
3051 | ||
b38cadfb NC |
3052 | struct a8_erratum_fix |
3053 | { | |
48229727 JB |
3054 | bfd *input_bfd; |
3055 | asection *section; | |
3056 | bfd_vma offset; | |
8d9d9490 | 3057 | bfd_vma target_offset; |
48229727 JB |
3058 | unsigned long orig_insn; |
3059 | char *stub_name; | |
3060 | enum elf32_arm_stub_type stub_type; | |
35fc36a8 | 3061 | enum arm_st_branch_type branch_type; |
48229727 JB |
3062 | }; |
3063 | ||
3064 | /* A table of relocs applied to branches which might trigger Cortex-A8 | |
3065 | erratum. */ | |
3066 | ||
b38cadfb NC |
3067 | struct a8_erratum_reloc |
3068 | { | |
48229727 JB |
3069 | bfd_vma from; |
3070 | bfd_vma destination; | |
92750f34 DJ |
3071 | struct elf32_arm_link_hash_entry *hash; |
3072 | const char *sym_name; | |
48229727 | 3073 | unsigned int r_type; |
35fc36a8 | 3074 | enum arm_st_branch_type branch_type; |
48229727 JB |
3075 | bfd_boolean non_a8_stub; |
3076 | }; | |
3077 | ||
ba93b8ac DJ |
3078 | /* The size of the thread control block. */ |
3079 | #define TCB_SIZE 8 | |
3080 | ||
34e77a92 RS |
3081 | /* ARM-specific information about a PLT entry, over and above the usual |
3082 | gotplt_union. */ | |
b38cadfb NC |
3083 | struct arm_plt_info |
3084 | { | |
34e77a92 RS |
3085 | /* We reference count Thumb references to a PLT entry separately, |
3086 | so that we can emit the Thumb trampoline only if needed. */ | |
3087 | bfd_signed_vma thumb_refcount; | |
3088 | ||
3089 | /* Some references from Thumb code may be eliminated by BL->BLX | |
3090 | conversion, so record them separately. */ | |
3091 | bfd_signed_vma maybe_thumb_refcount; | |
3092 | ||
3093 | /* How many of the recorded PLT accesses were from non-call relocations. | |
3094 | This information is useful when deciding whether anything takes the | |
3095 | address of an STT_GNU_IFUNC PLT. A value of 0 means that all | |
3096 | non-call references to the function should resolve directly to the | |
3097 | real runtime target. */ | |
3098 | unsigned int noncall_refcount; | |
3099 | ||
3100 | /* Since PLT entries have variable size if the Thumb prologue is | |
3101 | used, we need to record the index into .got.plt instead of | |
3102 | recomputing it from the PLT offset. */ | |
3103 | bfd_signed_vma got_offset; | |
3104 | }; | |
3105 | ||
3106 | /* Information about an .iplt entry for a local STT_GNU_IFUNC symbol. */ | |
b38cadfb NC |
3107 | struct arm_local_iplt_info |
3108 | { | |
34e77a92 RS |
3109 | /* The information that is usually found in the generic ELF part of |
3110 | the hash table entry. */ | |
3111 | union gotplt_union root; | |
3112 | ||
3113 | /* The information that is usually found in the ARM-specific part of | |
3114 | the hash table entry. */ | |
3115 | struct arm_plt_info arm; | |
3116 | ||
3117 | /* A list of all potential dynamic relocations against this symbol. */ | |
3118 | struct elf_dyn_relocs *dyn_relocs; | |
3119 | }; | |
3120 | ||
e8b09b87 CL |
3121 | /* Structure to handle FDPIC support for local functions. */ |
3122 | struct fdpic_local { | |
3123 | unsigned int funcdesc_cnt; | |
3124 | unsigned int gotofffuncdesc_cnt; | |
3125 | int funcdesc_offset; | |
3126 | }; | |
3127 | ||
0ffa91dd | 3128 | struct elf_arm_obj_tdata |
ba93b8ac DJ |
3129 | { |
3130 | struct elf_obj_tdata root; | |
3131 | ||
3132 | /* tls_type for each local got entry. */ | |
3133 | char *local_got_tls_type; | |
ee065d83 | 3134 | |
0855e32b NS |
3135 | /* GOTPLT entries for TLS descriptors. */ |
3136 | bfd_vma *local_tlsdesc_gotent; | |
3137 | ||
34e77a92 RS |
3138 | /* Information for local symbols that need entries in .iplt. */ |
3139 | struct arm_local_iplt_info **local_iplt; | |
3140 | ||
bf21ed78 MS |
3141 | /* Zero to warn when linking objects with incompatible enum sizes. */ |
3142 | int no_enum_size_warning; | |
a9dc9481 JM |
3143 | |
3144 | /* Zero to warn when linking objects with incompatible wchar_t sizes. */ | |
3145 | int no_wchar_size_warning; | |
e8b09b87 CL |
3146 | |
3147 | /* Maintains FDPIC counters and funcdesc info. */ | |
3148 | struct fdpic_local *local_fdpic_cnts; | |
ba93b8ac DJ |
3149 | }; |
3150 | ||
0ffa91dd NC |
3151 | #define elf_arm_tdata(bfd) \ |
3152 | ((struct elf_arm_obj_tdata *) (bfd)->tdata.any) | |
ba93b8ac | 3153 | |
0ffa91dd NC |
3154 | #define elf32_arm_local_got_tls_type(bfd) \ |
3155 | (elf_arm_tdata (bfd)->local_got_tls_type) | |
3156 | ||
0855e32b NS |
3157 | #define elf32_arm_local_tlsdesc_gotent(bfd) \ |
3158 | (elf_arm_tdata (bfd)->local_tlsdesc_gotent) | |
3159 | ||
34e77a92 RS |
3160 | #define elf32_arm_local_iplt(bfd) \ |
3161 | (elf_arm_tdata (bfd)->local_iplt) | |
3162 | ||
e8b09b87 CL |
3163 | #define elf32_arm_local_fdpic_cnts(bfd) \ |
3164 | (elf_arm_tdata (bfd)->local_fdpic_cnts) | |
3165 | ||
0ffa91dd NC |
3166 | #define is_arm_elf(bfd) \ |
3167 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
3168 | && elf_tdata (bfd) != NULL \ | |
4dfe6ac6 | 3169 | && elf_object_id (bfd) == ARM_ELF_DATA) |
ba93b8ac DJ |
3170 | |
3171 | static bfd_boolean | |
3172 | elf32_arm_mkobject (bfd *abfd) | |
3173 | { | |
0ffa91dd | 3174 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_arm_obj_tdata), |
4dfe6ac6 | 3175 | ARM_ELF_DATA); |
ba93b8ac DJ |
3176 | } |
3177 | ||
ba93b8ac DJ |
3178 | #define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent)) |
3179 | ||
e8b09b87 CL |
3180 | /* Structure to handle FDPIC support for extern functions. */ |
3181 | struct fdpic_global { | |
3182 | unsigned int gotofffuncdesc_cnt; | |
3183 | unsigned int gotfuncdesc_cnt; | |
3184 | unsigned int funcdesc_cnt; | |
3185 | int funcdesc_offset; | |
3186 | int gotfuncdesc_offset; | |
3187 | }; | |
3188 | ||
ba96a88f | 3189 | /* Arm ELF linker hash entry. */ |
252b5132 | 3190 | struct elf32_arm_link_hash_entry |
b38cadfb NC |
3191 | { |
3192 | struct elf_link_hash_entry root; | |
252b5132 | 3193 | |
b38cadfb NC |
3194 | /* Track dynamic relocs copied for this symbol. */ |
3195 | struct elf_dyn_relocs *dyn_relocs; | |
b7693d02 | 3196 | |
b38cadfb NC |
3197 | /* ARM-specific PLT information. */ |
3198 | struct arm_plt_info plt; | |
ba93b8ac DJ |
3199 | |
3200 | #define GOT_UNKNOWN 0 | |
3201 | #define GOT_NORMAL 1 | |
3202 | #define GOT_TLS_GD 2 | |
3203 | #define GOT_TLS_IE 4 | |
0855e32b NS |
3204 | #define GOT_TLS_GDESC 8 |
3205 | #define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLS_GDESC)) | |
b38cadfb | 3206 | unsigned int tls_type : 8; |
34e77a92 | 3207 | |
b38cadfb NC |
3208 | /* True if the symbol's PLT entry is in .iplt rather than .plt. */ |
3209 | unsigned int is_iplt : 1; | |
34e77a92 | 3210 | |
b38cadfb | 3211 | unsigned int unused : 23; |
a4fd1a8e | 3212 | |
b38cadfb NC |
3213 | /* Offset of the GOTPLT entry reserved for the TLS descriptor, |
3214 | starting at the end of the jump table. */ | |
3215 | bfd_vma tlsdesc_got; | |
0855e32b | 3216 | |
b38cadfb NC |
3217 | /* The symbol marking the real symbol location for exported thumb |
3218 | symbols with Arm stubs. */ | |
3219 | struct elf_link_hash_entry *export_glue; | |
906e58ca | 3220 | |
b38cadfb | 3221 | /* A pointer to the most recently used stub hash entry against this |
8029a119 | 3222 | symbol. */ |
b38cadfb | 3223 | struct elf32_arm_stub_hash_entry *stub_cache; |
e8b09b87 CL |
3224 | |
3225 | /* Counter for FDPIC relocations against this symbol. */ | |
3226 | struct fdpic_global fdpic_cnts; | |
b38cadfb | 3227 | }; |
252b5132 | 3228 | |
252b5132 | 3229 | /* Traverse an arm ELF linker hash table. */ |
252b5132 RH |
3230 | #define elf32_arm_link_hash_traverse(table, func, info) \ |
3231 | (elf_link_hash_traverse \ | |
3232 | (&(table)->root, \ | |
b7693d02 | 3233 | (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
252b5132 RH |
3234 | (info))) |
3235 | ||
3236 | /* Get the ARM elf linker hash table from a link_info structure. */ | |
3237 | #define elf32_arm_hash_table(info) \ | |
4dfe6ac6 NC |
3238 | (elf_hash_table_id ((struct elf_link_hash_table *) ((info)->hash)) \ |
3239 | == ARM_ELF_DATA ? ((struct elf32_arm_link_hash_table *) ((info)->hash)) : NULL) | |
252b5132 | 3240 | |
906e58ca NC |
3241 | #define arm_stub_hash_lookup(table, string, create, copy) \ |
3242 | ((struct elf32_arm_stub_hash_entry *) \ | |
3243 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3244 | ||
21d799b5 NC |
3245 | /* Array to keep track of which stub sections have been created, and |
3246 | information on stub grouping. */ | |
3247 | struct map_stub | |
3248 | { | |
3249 | /* This is the section to which stubs in the group will be | |
3250 | attached. */ | |
3251 | asection *link_sec; | |
3252 | /* The stub section. */ | |
3253 | asection *stub_sec; | |
3254 | }; | |
3255 | ||
0855e32b NS |
3256 | #define elf32_arm_compute_jump_table_size(htab) \ |
3257 | ((htab)->next_tls_desc_index * 4) | |
3258 | ||
9b485d32 | 3259 | /* ARM ELF linker hash table. */ |
252b5132 | 3260 | struct elf32_arm_link_hash_table |
906e58ca NC |
3261 | { |
3262 | /* The main hash table. */ | |
3263 | struct elf_link_hash_table root; | |
252b5132 | 3264 | |
906e58ca NC |
3265 | /* The size in bytes of the section containing the Thumb-to-ARM glue. */ |
3266 | bfd_size_type thumb_glue_size; | |
252b5132 | 3267 | |
906e58ca NC |
3268 | /* The size in bytes of the section containing the ARM-to-Thumb glue. */ |
3269 | bfd_size_type arm_glue_size; | |
252b5132 | 3270 | |
906e58ca NC |
3271 | /* The size in bytes of section containing the ARMv4 BX veneers. */ |
3272 | bfd_size_type bx_glue_size; | |
845b51d6 | 3273 | |
906e58ca NC |
3274 | /* Offsets of ARMv4 BX veneers. Bit1 set if present, and Bit0 set when |
3275 | veneer has been populated. */ | |
3276 | bfd_vma bx_glue_offset[15]; | |
845b51d6 | 3277 | |
906e58ca NC |
3278 | /* The size in bytes of the section containing glue for VFP11 erratum |
3279 | veneers. */ | |
3280 | bfd_size_type vfp11_erratum_glue_size; | |
c7b8f16e | 3281 | |
a504d23a LA |
3282 | /* The size in bytes of the section containing glue for STM32L4XX erratum |
3283 | veneers. */ | |
3284 | bfd_size_type stm32l4xx_erratum_glue_size; | |
3285 | ||
48229727 JB |
3286 | /* A table of fix locations for Cortex-A8 Thumb-2 branch/TLB erratum. This |
3287 | holds Cortex-A8 erratum fix locations between elf32_arm_size_stubs() and | |
3288 | elf32_arm_write_section(). */ | |
3289 | struct a8_erratum_fix *a8_erratum_fixes; | |
3290 | unsigned int num_a8_erratum_fixes; | |
3291 | ||
906e58ca NC |
3292 | /* An arbitrary input BFD chosen to hold the glue sections. */ |
3293 | bfd * bfd_of_glue_owner; | |
ba96a88f | 3294 | |
906e58ca NC |
3295 | /* Nonzero to output a BE8 image. */ |
3296 | int byteswap_code; | |
e489d0ae | 3297 | |
906e58ca NC |
3298 | /* Zero if R_ARM_TARGET1 means R_ARM_ABS32. |
3299 | Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */ | |
3300 | int target1_is_rel; | |
9c504268 | 3301 | |
906e58ca NC |
3302 | /* The relocation to use for R_ARM_TARGET2 relocations. */ |
3303 | int target2_reloc; | |
eb043451 | 3304 | |
906e58ca NC |
3305 | /* 0 = Ignore R_ARM_V4BX. |
3306 | 1 = Convert BX to MOV PC. | |
3307 | 2 = Generate v4 interworing stubs. */ | |
3308 | int fix_v4bx; | |
319850b4 | 3309 | |
48229727 JB |
3310 | /* Whether we should fix the Cortex-A8 Thumb-2 branch/TLB erratum. */ |
3311 | int fix_cortex_a8; | |
3312 | ||
2de70689 MGD |
3313 | /* Whether we should fix the ARM1176 BLX immediate issue. */ |
3314 | int fix_arm1176; | |
3315 | ||
906e58ca NC |
3316 | /* Nonzero if the ARM/Thumb BLX instructions are available for use. */ |
3317 | int use_blx; | |
33bfe774 | 3318 | |
906e58ca NC |
3319 | /* What sort of code sequences we should look for which may trigger the |
3320 | VFP11 denorm erratum. */ | |
3321 | bfd_arm_vfp11_fix vfp11_fix; | |
c7b8f16e | 3322 | |
906e58ca NC |
3323 | /* Global counter for the number of fixes we have emitted. */ |
3324 | int num_vfp11_fixes; | |
c7b8f16e | 3325 | |
a504d23a LA |
3326 | /* What sort of code sequences we should look for which may trigger the |
3327 | STM32L4XX erratum. */ | |
3328 | bfd_arm_stm32l4xx_fix stm32l4xx_fix; | |
3329 | ||
3330 | /* Global counter for the number of fixes we have emitted. */ | |
3331 | int num_stm32l4xx_fixes; | |
3332 | ||
906e58ca NC |
3333 | /* Nonzero to force PIC branch veneers. */ |
3334 | int pic_veneer; | |
27e55c4d | 3335 | |
906e58ca NC |
3336 | /* The number of bytes in the initial entry in the PLT. */ |
3337 | bfd_size_type plt_header_size; | |
e5a52504 | 3338 | |
906e58ca NC |
3339 | /* The number of bytes in the subsequent PLT etries. */ |
3340 | bfd_size_type plt_entry_size; | |
e5a52504 | 3341 | |
906e58ca NC |
3342 | /* True if the target system is VxWorks. */ |
3343 | int vxworks_p; | |
00a97672 | 3344 | |
906e58ca NC |
3345 | /* True if the target system is Symbian OS. */ |
3346 | int symbian_p; | |
e5a52504 | 3347 | |
b38cadfb NC |
3348 | /* True if the target system is Native Client. */ |
3349 | int nacl_p; | |
3350 | ||
906e58ca | 3351 | /* True if the target uses REL relocations. */ |
f3185997 | 3352 | bfd_boolean use_rel; |
4e7fd91e | 3353 | |
54ddd295 TP |
3354 | /* Nonzero if import library must be a secure gateway import library |
3355 | as per ARMv8-M Security Extensions. */ | |
3356 | int cmse_implib; | |
3357 | ||
0955507f TP |
3358 | /* The import library whose symbols' address must remain stable in |
3359 | the import library generated. */ | |
3360 | bfd *in_implib_bfd; | |
3361 | ||
0855e32b NS |
3362 | /* The index of the next unused R_ARM_TLS_DESC slot in .rel.plt. */ |
3363 | bfd_vma next_tls_desc_index; | |
3364 | ||
3365 | /* How many R_ARM_TLS_DESC relocations were generated so far. */ | |
3366 | bfd_vma num_tls_desc; | |
3367 | ||
906e58ca NC |
3368 | /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */ |
3369 | asection *srelplt2; | |
00a97672 | 3370 | |
0855e32b NS |
3371 | /* The offset into splt of the PLT entry for the TLS descriptor |
3372 | resolver. Special values are 0, if not necessary (or not found | |
3373 | to be necessary yet), and -1 if needed but not determined | |
3374 | yet. */ | |
3375 | bfd_vma dt_tlsdesc_plt; | |
3376 | ||
3377 | /* The offset into sgot of the GOT entry used by the PLT entry | |
3378 | above. */ | |
b38cadfb | 3379 | bfd_vma dt_tlsdesc_got; |
0855e32b NS |
3380 | |
3381 | /* Offset in .plt section of tls_arm_trampoline. */ | |
3382 | bfd_vma tls_trampoline; | |
3383 | ||
5c5a4843 | 3384 | /* Data for R_ARM_TLS_LDM32/R_ARM_TLS_LDM32_FDPIC relocations. */ |
906e58ca NC |
3385 | union |
3386 | { | |
3387 | bfd_signed_vma refcount; | |
3388 | bfd_vma offset; | |
3389 | } tls_ldm_got; | |
b7693d02 | 3390 | |
87d72d41 AM |
3391 | /* Small local sym cache. */ |
3392 | struct sym_cache sym_cache; | |
906e58ca NC |
3393 | |
3394 | /* For convenience in allocate_dynrelocs. */ | |
3395 | bfd * obfd; | |
3396 | ||
0855e32b NS |
3397 | /* The amount of space used by the reserved portion of the sgotplt |
3398 | section, plus whatever space is used by the jump slots. */ | |
3399 | bfd_vma sgotplt_jump_table_size; | |
3400 | ||
906e58ca NC |
3401 | /* The stub hash table. */ |
3402 | struct bfd_hash_table stub_hash_table; | |
3403 | ||
3404 | /* Linker stub bfd. */ | |
3405 | bfd *stub_bfd; | |
3406 | ||
3407 | /* Linker call-backs. */ | |
6bde4c52 TP |
3408 | asection * (*add_stub_section) (const char *, asection *, asection *, |
3409 | unsigned int); | |
906e58ca NC |
3410 | void (*layout_sections_again) (void); |
3411 | ||
3412 | /* Array to keep track of which stub sections have been created, and | |
3413 | information on stub grouping. */ | |
21d799b5 | 3414 | struct map_stub *stub_group; |
906e58ca | 3415 | |
4ba2ef8f TP |
3416 | /* Input stub section holding secure gateway veneers. */ |
3417 | asection *cmse_stub_sec; | |
3418 | ||
0955507f TP |
3419 | /* Offset in cmse_stub_sec where new SG veneers (not in input import library) |
3420 | start to be allocated. */ | |
3421 | bfd_vma new_cmse_stub_offset; | |
3422 | ||
fe33d2fa | 3423 | /* Number of elements in stub_group. */ |
7292b3ac | 3424 | unsigned int top_id; |
fe33d2fa | 3425 | |
906e58ca NC |
3426 | /* Assorted information used by elf32_arm_size_stubs. */ |
3427 | unsigned int bfd_count; | |
7292b3ac | 3428 | unsigned int top_index; |
906e58ca | 3429 | asection **input_list; |
617a5ada CL |
3430 | |
3431 | /* True if the target system uses FDPIC. */ | |
3432 | int fdpic_p; | |
e8b09b87 CL |
3433 | |
3434 | /* Fixup section. Used for FDPIC. */ | |
3435 | asection *srofixup; | |
906e58ca | 3436 | }; |
252b5132 | 3437 | |
e8b09b87 CL |
3438 | /* Add an FDPIC read-only fixup. */ |
3439 | static void | |
3440 | arm_elf_add_rofixup (bfd *output_bfd, asection *srofixup, bfd_vma offset) | |
3441 | { | |
3442 | bfd_vma fixup_offset; | |
3443 | ||
3444 | fixup_offset = srofixup->reloc_count++ * 4; | |
3445 | BFD_ASSERT (fixup_offset < srofixup->size); | |
3446 | bfd_put_32 (output_bfd, offset, srofixup->contents + fixup_offset); | |
3447 | } | |
3448 | ||
a504d23a LA |
3449 | static inline int |
3450 | ctz (unsigned int mask) | |
3451 | { | |
3452 | #if GCC_VERSION >= 3004 | |
3453 | return __builtin_ctz (mask); | |
3454 | #else | |
3455 | unsigned int i; | |
3456 | ||
3457 | for (i = 0; i < 8 * sizeof (mask); i++) | |
3458 | { | |
3459 | if (mask & 0x1) | |
3460 | break; | |
3461 | mask = (mask >> 1); | |
3462 | } | |
3463 | return i; | |
3464 | #endif | |
3465 | } | |
3466 | ||
3467 | static inline int | |
b25e998d | 3468 | elf32_arm_popcount (unsigned int mask) |
a504d23a LA |
3469 | { |
3470 | #if GCC_VERSION >= 3004 | |
3471 | return __builtin_popcount (mask); | |
3472 | #else | |
b25e998d CG |
3473 | unsigned int i; |
3474 | int sum = 0; | |
a504d23a LA |
3475 | |
3476 | for (i = 0; i < 8 * sizeof (mask); i++) | |
3477 | { | |
3478 | if (mask & 0x1) | |
3479 | sum++; | |
3480 | mask = (mask >> 1); | |
3481 | } | |
3482 | return sum; | |
3483 | #endif | |
3484 | } | |
3485 | ||
e8b09b87 CL |
3486 | static void elf32_arm_add_dynreloc (bfd *output_bfd, struct bfd_link_info *info, |
3487 | asection *sreloc, Elf_Internal_Rela *rel); | |
3488 | ||
3489 | static void | |
3490 | arm_elf_fill_funcdesc(bfd *output_bfd, | |
3491 | struct bfd_link_info *info, | |
3492 | int *funcdesc_offset, | |
3493 | int dynindx, | |
3494 | int offset, | |
3495 | bfd_vma addr, | |
3496 | bfd_vma dynreloc_value, | |
3497 | bfd_vma seg) | |
3498 | { | |
3499 | if ((*funcdesc_offset & 1) == 0) | |
3500 | { | |
3501 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (info); | |
3502 | asection *sgot = globals->root.sgot; | |
3503 | ||
3504 | if (bfd_link_pic(info)) | |
3505 | { | |
3506 | asection *srelgot = globals->root.srelgot; | |
3507 | Elf_Internal_Rela outrel; | |
3508 | ||
3509 | outrel.r_info = ELF32_R_INFO (dynindx, R_ARM_FUNCDESC_VALUE); | |
3510 | outrel.r_offset = sgot->output_section->vma + sgot->output_offset + offset; | |
3511 | outrel.r_addend = 0; | |
3512 | ||
3513 | elf32_arm_add_dynreloc (output_bfd, info, srelgot, &outrel); | |
3514 | bfd_put_32 (output_bfd, addr, sgot->contents + offset); | |
3515 | bfd_put_32 (output_bfd, seg, sgot->contents + offset + 4); | |
3516 | } | |
3517 | else | |
3518 | { | |
3519 | struct elf_link_hash_entry *hgot = globals->root.hgot; | |
3520 | bfd_vma got_value = hgot->root.u.def.value | |
3521 | + hgot->root.u.def.section->output_section->vma | |
3522 | + hgot->root.u.def.section->output_offset; | |
3523 | ||
3524 | arm_elf_add_rofixup(output_bfd, globals->srofixup, | |
3525 | sgot->output_section->vma + sgot->output_offset | |
3526 | + offset); | |
3527 | arm_elf_add_rofixup(output_bfd, globals->srofixup, | |
3528 | sgot->output_section->vma + sgot->output_offset | |
3529 | + offset + 4); | |
3530 | bfd_put_32 (output_bfd, dynreloc_value, sgot->contents + offset); | |
3531 | bfd_put_32 (output_bfd, got_value, sgot->contents + offset + 4); | |
3532 | } | |
3533 | *funcdesc_offset |= 1; | |
3534 | } | |
3535 | } | |
3536 | ||
780a67af NC |
3537 | /* Create an entry in an ARM ELF linker hash table. */ |
3538 | ||
3539 | static struct bfd_hash_entry * | |
57e8b36a | 3540 | elf32_arm_link_hash_newfunc (struct bfd_hash_entry * entry, |
99059e56 RM |
3541 | struct bfd_hash_table * table, |
3542 | const char * string) | |
780a67af NC |
3543 | { |
3544 | struct elf32_arm_link_hash_entry * ret = | |
3545 | (struct elf32_arm_link_hash_entry *) entry; | |
3546 | ||
3547 | /* Allocate the structure if it has not already been allocated by a | |
3548 | subclass. */ | |
906e58ca | 3549 | if (ret == NULL) |
21d799b5 | 3550 | ret = (struct elf32_arm_link_hash_entry *) |
99059e56 | 3551 | bfd_hash_allocate (table, sizeof (struct elf32_arm_link_hash_entry)); |
57e8b36a | 3552 | if (ret == NULL) |
780a67af NC |
3553 | return (struct bfd_hash_entry *) ret; |
3554 | ||
3555 | /* Call the allocation method of the superclass. */ | |
3556 | ret = ((struct elf32_arm_link_hash_entry *) | |
3557 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
3558 | table, string)); | |
57e8b36a | 3559 | if (ret != NULL) |
b7693d02 | 3560 | { |
0bdcacaf | 3561 | ret->dyn_relocs = NULL; |
ba93b8ac | 3562 | ret->tls_type = GOT_UNKNOWN; |
0855e32b | 3563 | ret->tlsdesc_got = (bfd_vma) -1; |
34e77a92 RS |
3564 | ret->plt.thumb_refcount = 0; |
3565 | ret->plt.maybe_thumb_refcount = 0; | |
3566 | ret->plt.noncall_refcount = 0; | |
3567 | ret->plt.got_offset = -1; | |
3568 | ret->is_iplt = FALSE; | |
a4fd1a8e | 3569 | ret->export_glue = NULL; |
906e58ca NC |
3570 | |
3571 | ret->stub_cache = NULL; | |
e8b09b87 CL |
3572 | |
3573 | ret->fdpic_cnts.gotofffuncdesc_cnt = 0; | |
3574 | ret->fdpic_cnts.gotfuncdesc_cnt = 0; | |
3575 | ret->fdpic_cnts.funcdesc_cnt = 0; | |
3576 | ret->fdpic_cnts.funcdesc_offset = -1; | |
3577 | ret->fdpic_cnts.gotfuncdesc_offset = -1; | |
b7693d02 | 3578 | } |
780a67af NC |
3579 | |
3580 | return (struct bfd_hash_entry *) ret; | |
3581 | } | |
3582 | ||
34e77a92 RS |
3583 | /* Ensure that we have allocated bookkeeping structures for ABFD's local |
3584 | symbols. */ | |
3585 | ||
3586 | static bfd_boolean | |
3587 | elf32_arm_allocate_local_sym_info (bfd *abfd) | |
3588 | { | |
3589 | if (elf_local_got_refcounts (abfd) == NULL) | |
3590 | { | |
3591 | bfd_size_type num_syms; | |
3592 | bfd_size_type size; | |
3593 | char *data; | |
3594 | ||
3595 | num_syms = elf_tdata (abfd)->symtab_hdr.sh_info; | |
3596 | size = num_syms * (sizeof (bfd_signed_vma) | |
3597 | + sizeof (struct arm_local_iplt_info *) | |
3598 | + sizeof (bfd_vma) | |
e8b09b87 CL |
3599 | + sizeof (char) |
3600 | + sizeof (struct fdpic_local)); | |
34e77a92 RS |
3601 | data = bfd_zalloc (abfd, size); |
3602 | if (data == NULL) | |
3603 | return FALSE; | |
3604 | ||
e8b09b87 CL |
3605 | elf32_arm_local_fdpic_cnts (abfd) = (struct fdpic_local *) data; |
3606 | data += num_syms * sizeof (struct fdpic_local); | |
3607 | ||
34e77a92 RS |
3608 | elf_local_got_refcounts (abfd) = (bfd_signed_vma *) data; |
3609 | data += num_syms * sizeof (bfd_signed_vma); | |
3610 | ||
3611 | elf32_arm_local_iplt (abfd) = (struct arm_local_iplt_info **) data; | |
3612 | data += num_syms * sizeof (struct arm_local_iplt_info *); | |
3613 | ||
3614 | elf32_arm_local_tlsdesc_gotent (abfd) = (bfd_vma *) data; | |
3615 | data += num_syms * sizeof (bfd_vma); | |
3616 | ||
3617 | elf32_arm_local_got_tls_type (abfd) = data; | |
3618 | } | |
3619 | return TRUE; | |
3620 | } | |
3621 | ||
3622 | /* Return the .iplt information for local symbol R_SYMNDX, which belongs | |
3623 | to input bfd ABFD. Create the information if it doesn't already exist. | |
3624 | Return null if an allocation fails. */ | |
3625 | ||
3626 | static struct arm_local_iplt_info * | |
3627 | elf32_arm_create_local_iplt (bfd *abfd, unsigned long r_symndx) | |
3628 | { | |
3629 | struct arm_local_iplt_info **ptr; | |
3630 | ||
3631 | if (!elf32_arm_allocate_local_sym_info (abfd)) | |
3632 | return NULL; | |
3633 | ||
3634 | BFD_ASSERT (r_symndx < elf_tdata (abfd)->symtab_hdr.sh_info); | |
3635 | ptr = &elf32_arm_local_iplt (abfd)[r_symndx]; | |
3636 | if (*ptr == NULL) | |
3637 | *ptr = bfd_zalloc (abfd, sizeof (**ptr)); | |
3638 | return *ptr; | |
3639 | } | |
3640 | ||
3641 | /* Try to obtain PLT information for the symbol with index R_SYMNDX | |
3642 | in ABFD's symbol table. If the symbol is global, H points to its | |
3643 | hash table entry, otherwise H is null. | |
3644 | ||
3645 | Return true if the symbol does have PLT information. When returning | |
3646 | true, point *ROOT_PLT at the target-independent reference count/offset | |
3647 | union and *ARM_PLT at the ARM-specific information. */ | |
3648 | ||
3649 | static bfd_boolean | |
4ba2ef8f TP |
3650 | elf32_arm_get_plt_info (bfd *abfd, struct elf32_arm_link_hash_table *globals, |
3651 | struct elf32_arm_link_hash_entry *h, | |
34e77a92 RS |
3652 | unsigned long r_symndx, union gotplt_union **root_plt, |
3653 | struct arm_plt_info **arm_plt) | |
3654 | { | |
3655 | struct arm_local_iplt_info *local_iplt; | |
3656 | ||
4ba2ef8f TP |
3657 | if (globals->root.splt == NULL && globals->root.iplt == NULL) |
3658 | return FALSE; | |
3659 | ||
34e77a92 RS |
3660 | if (h != NULL) |
3661 | { | |
3662 | *root_plt = &h->root.plt; | |
3663 | *arm_plt = &h->plt; | |
3664 | return TRUE; | |
3665 | } | |
3666 | ||
3667 | if (elf32_arm_local_iplt (abfd) == NULL) | |
3668 | return FALSE; | |
3669 | ||
3670 | local_iplt = elf32_arm_local_iplt (abfd)[r_symndx]; | |
3671 | if (local_iplt == NULL) | |
3672 | return FALSE; | |
3673 | ||
3674 | *root_plt = &local_iplt->root; | |
3675 | *arm_plt = &local_iplt->arm; | |
3676 | return TRUE; | |
3677 | } | |
3678 | ||
59029f57 CL |
3679 | static bfd_boolean using_thumb_only (struct elf32_arm_link_hash_table *globals); |
3680 | ||
34e77a92 RS |
3681 | /* Return true if the PLT described by ARM_PLT requires a Thumb stub |
3682 | before it. */ | |
3683 | ||
3684 | static bfd_boolean | |
3685 | elf32_arm_plt_needs_thumb_stub_p (struct bfd_link_info *info, | |
3686 | struct arm_plt_info *arm_plt) | |
3687 | { | |
3688 | struct elf32_arm_link_hash_table *htab; | |
3689 | ||
3690 | htab = elf32_arm_hash_table (info); | |
59029f57 CL |
3691 | |
3692 | return (!using_thumb_only(htab) && (arm_plt->thumb_refcount != 0 | |
3693 | || (!htab->use_blx && arm_plt->maybe_thumb_refcount != 0))); | |
34e77a92 RS |
3694 | } |
3695 | ||
3696 | /* Return a pointer to the head of the dynamic reloc list that should | |
3697 | be used for local symbol ISYM, which is symbol number R_SYMNDX in | |
3698 | ABFD's symbol table. Return null if an error occurs. */ | |
3699 | ||
3700 | static struct elf_dyn_relocs ** | |
3701 | elf32_arm_get_local_dynreloc_list (bfd *abfd, unsigned long r_symndx, | |
3702 | Elf_Internal_Sym *isym) | |
3703 | { | |
3704 | if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
3705 | { | |
3706 | struct arm_local_iplt_info *local_iplt; | |
3707 | ||
3708 | local_iplt = elf32_arm_create_local_iplt (abfd, r_symndx); | |
3709 | if (local_iplt == NULL) | |
3710 | return NULL; | |
3711 | return &local_iplt->dyn_relocs; | |
3712 | } | |
3713 | else | |
3714 | { | |
3715 | /* Track dynamic relocs needed for local syms too. | |
3716 | We really need local syms available to do this | |
3717 | easily. Oh well. */ | |
3718 | asection *s; | |
3719 | void *vpp; | |
3720 | ||
3721 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
3722 | if (s == NULL) | |
3723 | abort (); | |
3724 | ||
3725 | vpp = &elf_section_data (s)->local_dynrel; | |
3726 | return (struct elf_dyn_relocs **) vpp; | |
3727 | } | |
3728 | } | |
3729 | ||
906e58ca NC |
3730 | /* Initialize an entry in the stub hash table. */ |
3731 | ||
3732 | static struct bfd_hash_entry * | |
3733 | stub_hash_newfunc (struct bfd_hash_entry *entry, | |
3734 | struct bfd_hash_table *table, | |
3735 | const char *string) | |
3736 | { | |
3737 | /* Allocate the structure if it has not already been allocated by a | |
3738 | subclass. */ | |
3739 | if (entry == NULL) | |
3740 | { | |
21d799b5 | 3741 | entry = (struct bfd_hash_entry *) |
99059e56 | 3742 | bfd_hash_allocate (table, sizeof (struct elf32_arm_stub_hash_entry)); |
906e58ca NC |
3743 | if (entry == NULL) |
3744 | return entry; | |
3745 | } | |
3746 | ||
3747 | /* Call the allocation method of the superclass. */ | |
3748 | entry = bfd_hash_newfunc (entry, table, string); | |
3749 | if (entry != NULL) | |
3750 | { | |
3751 | struct elf32_arm_stub_hash_entry *eh; | |
3752 | ||
3753 | /* Initialize the local fields. */ | |
3754 | eh = (struct elf32_arm_stub_hash_entry *) entry; | |
3755 | eh->stub_sec = NULL; | |
0955507f | 3756 | eh->stub_offset = (bfd_vma) -1; |
8d9d9490 | 3757 | eh->source_value = 0; |
906e58ca NC |
3758 | eh->target_value = 0; |
3759 | eh->target_section = NULL; | |
cedfb179 | 3760 | eh->orig_insn = 0; |
906e58ca | 3761 | eh->stub_type = arm_stub_none; |
461a49ca DJ |
3762 | eh->stub_size = 0; |
3763 | eh->stub_template = NULL; | |
0955507f | 3764 | eh->stub_template_size = -1; |
906e58ca NC |
3765 | eh->h = NULL; |
3766 | eh->id_sec = NULL; | |
d8d2f433 | 3767 | eh->output_name = NULL; |
906e58ca NC |
3768 | } |
3769 | ||
3770 | return entry; | |
3771 | } | |
3772 | ||
00a97672 | 3773 | /* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up |
5e681ec4 PB |
3774 | shortcuts to them in our hash table. */ |
3775 | ||
3776 | static bfd_boolean | |
57e8b36a | 3777 | create_got_section (bfd *dynobj, struct bfd_link_info *info) |
5e681ec4 PB |
3778 | { |
3779 | struct elf32_arm_link_hash_table *htab; | |
3780 | ||
e5a52504 | 3781 | htab = elf32_arm_hash_table (info); |
4dfe6ac6 NC |
3782 | if (htab == NULL) |
3783 | return FALSE; | |
3784 | ||
e5a52504 MM |
3785 | /* BPABI objects never have a GOT, or associated sections. */ |
3786 | if (htab->symbian_p) | |
3787 | return TRUE; | |
3788 | ||
5e681ec4 PB |
3789 | if (! _bfd_elf_create_got_section (dynobj, info)) |
3790 | return FALSE; | |
3791 | ||
e8b09b87 CL |
3792 | /* Also create .rofixup. */ |
3793 | if (htab->fdpic_p) | |
3794 | { | |
3795 | htab->srofixup = bfd_make_section_with_flags (dynobj, ".rofixup", | |
3796 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
3797 | | SEC_IN_MEMORY | SEC_LINKER_CREATED | SEC_READONLY)); | |
3798 | if (htab->srofixup == NULL || ! bfd_set_section_alignment (dynobj, htab->srofixup, 2)) | |
3799 | return FALSE; | |
3800 | } | |
3801 | ||
5e681ec4 PB |
3802 | return TRUE; |
3803 | } | |
3804 | ||
34e77a92 RS |
3805 | /* Create the .iplt, .rel(a).iplt and .igot.plt sections. */ |
3806 | ||
3807 | static bfd_boolean | |
3808 | create_ifunc_sections (struct bfd_link_info *info) | |
3809 | { | |
3810 | struct elf32_arm_link_hash_table *htab; | |
3811 | const struct elf_backend_data *bed; | |
3812 | bfd *dynobj; | |
3813 | asection *s; | |
3814 | flagword flags; | |
b38cadfb | 3815 | |
34e77a92 RS |
3816 | htab = elf32_arm_hash_table (info); |
3817 | dynobj = htab->root.dynobj; | |
3818 | bed = get_elf_backend_data (dynobj); | |
3819 | flags = bed->dynamic_sec_flags; | |
3820 | ||
3821 | if (htab->root.iplt == NULL) | |
3822 | { | |
3d4d4302 AM |
3823 | s = bfd_make_section_anyway_with_flags (dynobj, ".iplt", |
3824 | flags | SEC_READONLY | SEC_CODE); | |
34e77a92 | 3825 | if (s == NULL |
a0f49396 | 3826 | || !bfd_set_section_alignment (dynobj, s, bed->plt_alignment)) |
34e77a92 RS |
3827 | return FALSE; |
3828 | htab->root.iplt = s; | |
3829 | } | |
3830 | ||
3831 | if (htab->root.irelplt == NULL) | |
3832 | { | |
3d4d4302 AM |
3833 | s = bfd_make_section_anyway_with_flags (dynobj, |
3834 | RELOC_SECTION (htab, ".iplt"), | |
3835 | flags | SEC_READONLY); | |
34e77a92 | 3836 | if (s == NULL |
a0f49396 | 3837 | || !bfd_set_section_alignment (dynobj, s, bed->s->log_file_align)) |
34e77a92 RS |
3838 | return FALSE; |
3839 | htab->root.irelplt = s; | |
3840 | } | |
3841 | ||
3842 | if (htab->root.igotplt == NULL) | |
3843 | { | |
3d4d4302 | 3844 | s = bfd_make_section_anyway_with_flags (dynobj, ".igot.plt", flags); |
34e77a92 RS |
3845 | if (s == NULL |
3846 | || !bfd_set_section_alignment (dynobj, s, bed->s->log_file_align)) | |
3847 | return FALSE; | |
3848 | htab->root.igotplt = s; | |
3849 | } | |
3850 | return TRUE; | |
3851 | } | |
3852 | ||
eed94f8f NC |
3853 | /* Determine if we're dealing with a Thumb only architecture. */ |
3854 | ||
3855 | static bfd_boolean | |
3856 | using_thumb_only (struct elf32_arm_link_hash_table *globals) | |
3857 | { | |
2fd158eb TP |
3858 | int arch; |
3859 | int profile = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, | |
3860 | Tag_CPU_arch_profile); | |
eed94f8f | 3861 | |
2fd158eb TP |
3862 | if (profile) |
3863 | return profile == 'M'; | |
eed94f8f | 3864 | |
2fd158eb | 3865 | arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, Tag_CPU_arch); |
eed94f8f | 3866 | |
60a019a0 | 3867 | /* Force return logic to be reviewed for each new architecture. */ |
031254f2 | 3868 | BFD_ASSERT (arch <= TAG_CPU_ARCH_V8_1M_MAIN); |
60a019a0 | 3869 | |
2fd158eb TP |
3870 | if (arch == TAG_CPU_ARCH_V6_M |
3871 | || arch == TAG_CPU_ARCH_V6S_M | |
3872 | || arch == TAG_CPU_ARCH_V7E_M | |
3873 | || arch == TAG_CPU_ARCH_V8M_BASE | |
031254f2 AV |
3874 | || arch == TAG_CPU_ARCH_V8M_MAIN |
3875 | || arch == TAG_CPU_ARCH_V8_1M_MAIN) | |
2fd158eb | 3876 | return TRUE; |
eed94f8f | 3877 | |
2fd158eb | 3878 | return FALSE; |
eed94f8f NC |
3879 | } |
3880 | ||
3881 | /* Determine if we're dealing with a Thumb-2 object. */ | |
3882 | ||
3883 | static bfd_boolean | |
3884 | using_thumb2 (struct elf32_arm_link_hash_table *globals) | |
3885 | { | |
60a019a0 TP |
3886 | int arch; |
3887 | int thumb_isa = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, | |
3888 | Tag_THUMB_ISA_use); | |
3889 | ||
3890 | if (thumb_isa) | |
3891 | return thumb_isa == 2; | |
3892 | ||
3893 | arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, Tag_CPU_arch); | |
3894 | ||
3895 | /* Force return logic to be reviewed for each new architecture. */ | |
031254f2 | 3896 | BFD_ASSERT (arch <= TAG_CPU_ARCH_V8_1M_MAIN); |
60a019a0 TP |
3897 | |
3898 | return (arch == TAG_CPU_ARCH_V6T2 | |
3899 | || arch == TAG_CPU_ARCH_V7 | |
3900 | || arch == TAG_CPU_ARCH_V7E_M | |
3901 | || arch == TAG_CPU_ARCH_V8 | |
bff0500d | 3902 | || arch == TAG_CPU_ARCH_V8R |
031254f2 AV |
3903 | || arch == TAG_CPU_ARCH_V8M_MAIN |
3904 | || arch == TAG_CPU_ARCH_V8_1M_MAIN); | |
eed94f8f NC |
3905 | } |
3906 | ||
5e866f5a TP |
3907 | /* Determine whether Thumb-2 BL instruction is available. */ |
3908 | ||
3909 | static bfd_boolean | |
3910 | using_thumb2_bl (struct elf32_arm_link_hash_table *globals) | |
3911 | { | |
3912 | int arch = | |
3913 | bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, Tag_CPU_arch); | |
3914 | ||
3915 | /* Force return logic to be reviewed for each new architecture. */ | |
031254f2 | 3916 | BFD_ASSERT (arch <= TAG_CPU_ARCH_V8_1M_MAIN); |
5e866f5a TP |
3917 | |
3918 | /* Architecture was introduced after ARMv6T2 (eg. ARMv6-M). */ | |
3919 | return (arch == TAG_CPU_ARCH_V6T2 | |
3920 | || arch >= TAG_CPU_ARCH_V7); | |
3921 | } | |
3922 | ||
00a97672 RS |
3923 | /* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and |
3924 | .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our | |
5e681ec4 PB |
3925 | hash table. */ |
3926 | ||
3927 | static bfd_boolean | |
57e8b36a | 3928 | elf32_arm_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5e681ec4 PB |
3929 | { |
3930 | struct elf32_arm_link_hash_table *htab; | |
3931 | ||
3932 | htab = elf32_arm_hash_table (info); | |
4dfe6ac6 NC |
3933 | if (htab == NULL) |
3934 | return FALSE; | |
3935 | ||
362d30a1 | 3936 | if (!htab->root.sgot && !create_got_section (dynobj, info)) |
5e681ec4 PB |
3937 | return FALSE; |
3938 | ||
3939 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
3940 | return FALSE; | |
3941 | ||
00a97672 RS |
3942 | if (htab->vxworks_p) |
3943 | { | |
3944 | if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2)) | |
3945 | return FALSE; | |
3946 | ||
0e1862bb | 3947 | if (bfd_link_pic (info)) |
00a97672 RS |
3948 | { |
3949 | htab->plt_header_size = 0; | |
3950 | htab->plt_entry_size | |
3951 | = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry); | |
3952 | } | |
3953 | else | |
3954 | { | |
3955 | htab->plt_header_size | |
3956 | = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry); | |
3957 | htab->plt_entry_size | |
3958 | = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry); | |
3959 | } | |
aebf9be7 NC |
3960 | |
3961 | if (elf_elfheader (dynobj)) | |
3962 | elf_elfheader (dynobj)->e_ident[EI_CLASS] = ELFCLASS32; | |
00a97672 | 3963 | } |
eed94f8f NC |
3964 | else |
3965 | { | |
3966 | /* PR ld/16017 | |
3967 | Test for thumb only architectures. Note - we cannot just call | |
3968 | using_thumb_only() as the attributes in the output bfd have not been | |
3969 | initialised at this point, so instead we use the input bfd. */ | |
3970 | bfd * saved_obfd = htab->obfd; | |
3971 | ||
3972 | htab->obfd = dynobj; | |
3973 | if (using_thumb_only (htab)) | |
3974 | { | |
3975 | htab->plt_header_size = 4 * ARRAY_SIZE (elf32_thumb2_plt0_entry); | |
3976 | htab->plt_entry_size = 4 * ARRAY_SIZE (elf32_thumb2_plt_entry); | |
3977 | } | |
3978 | htab->obfd = saved_obfd; | |
3979 | } | |
5e681ec4 | 3980 | |
7801f98f CL |
3981 | if (htab->fdpic_p) { |
3982 | htab->plt_header_size = 0; | |
3983 | if (info->flags & DF_BIND_NOW) | |
3984 | htab->plt_entry_size = 4 * (ARRAY_SIZE(elf32_arm_fdpic_plt_entry) - 5); | |
3985 | else | |
3986 | htab->plt_entry_size = 4 * ARRAY_SIZE(elf32_arm_fdpic_plt_entry); | |
3987 | } | |
3988 | ||
362d30a1 RS |
3989 | if (!htab->root.splt |
3990 | || !htab->root.srelplt | |
9d19e4fd AM |
3991 | || !htab->root.sdynbss |
3992 | || (!bfd_link_pic (info) && !htab->root.srelbss)) | |
5e681ec4 PB |
3993 | abort (); |
3994 | ||
3995 | return TRUE; | |
3996 | } | |
3997 | ||
906e58ca NC |
3998 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
3999 | ||
4000 | static void | |
4001 | elf32_arm_copy_indirect_symbol (struct bfd_link_info *info, | |
4002 | struct elf_link_hash_entry *dir, | |
4003 | struct elf_link_hash_entry *ind) | |
4004 | { | |
4005 | struct elf32_arm_link_hash_entry *edir, *eind; | |
4006 | ||
4007 | edir = (struct elf32_arm_link_hash_entry *) dir; | |
4008 | eind = (struct elf32_arm_link_hash_entry *) ind; | |
4009 | ||
0bdcacaf | 4010 | if (eind->dyn_relocs != NULL) |
906e58ca | 4011 | { |
0bdcacaf | 4012 | if (edir->dyn_relocs != NULL) |
906e58ca | 4013 | { |
0bdcacaf RS |
4014 | struct elf_dyn_relocs **pp; |
4015 | struct elf_dyn_relocs *p; | |
906e58ca NC |
4016 | |
4017 | /* Add reloc counts against the indirect sym to the direct sym | |
4018 | list. Merge any entries against the same section. */ | |
0bdcacaf | 4019 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) |
906e58ca | 4020 | { |
0bdcacaf | 4021 | struct elf_dyn_relocs *q; |
906e58ca | 4022 | |
0bdcacaf RS |
4023 | for (q = edir->dyn_relocs; q != NULL; q = q->next) |
4024 | if (q->sec == p->sec) | |
906e58ca NC |
4025 | { |
4026 | q->pc_count += p->pc_count; | |
4027 | q->count += p->count; | |
4028 | *pp = p->next; | |
4029 | break; | |
4030 | } | |
4031 | if (q == NULL) | |
4032 | pp = &p->next; | |
4033 | } | |
0bdcacaf | 4034 | *pp = edir->dyn_relocs; |
906e58ca NC |
4035 | } |
4036 | ||
0bdcacaf RS |
4037 | edir->dyn_relocs = eind->dyn_relocs; |
4038 | eind->dyn_relocs = NULL; | |
906e58ca NC |
4039 | } |
4040 | ||
4041 | if (ind->root.type == bfd_link_hash_indirect) | |
4042 | { | |
4043 | /* Copy over PLT info. */ | |
34e77a92 RS |
4044 | edir->plt.thumb_refcount += eind->plt.thumb_refcount; |
4045 | eind->plt.thumb_refcount = 0; | |
4046 | edir->plt.maybe_thumb_refcount += eind->plt.maybe_thumb_refcount; | |
4047 | eind->plt.maybe_thumb_refcount = 0; | |
4048 | edir->plt.noncall_refcount += eind->plt.noncall_refcount; | |
4049 | eind->plt.noncall_refcount = 0; | |
4050 | ||
e8b09b87 CL |
4051 | /* Copy FDPIC counters. */ |
4052 | edir->fdpic_cnts.gotofffuncdesc_cnt += eind->fdpic_cnts.gotofffuncdesc_cnt; | |
4053 | edir->fdpic_cnts.gotfuncdesc_cnt += eind->fdpic_cnts.gotfuncdesc_cnt; | |
4054 | edir->fdpic_cnts.funcdesc_cnt += eind->fdpic_cnts.funcdesc_cnt; | |
4055 | ||
34e77a92 RS |
4056 | /* We should only allocate a function to .iplt once the final |
4057 | symbol information is known. */ | |
4058 | BFD_ASSERT (!eind->is_iplt); | |
906e58ca NC |
4059 | |
4060 | if (dir->got.refcount <= 0) | |
4061 | { | |
4062 | edir->tls_type = eind->tls_type; | |
4063 | eind->tls_type = GOT_UNKNOWN; | |
4064 | } | |
4065 | } | |
4066 | ||
4067 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
4068 | } | |
4069 | ||
68faa637 AM |
4070 | /* Destroy an ARM elf linker hash table. */ |
4071 | ||
4072 | static void | |
d495ab0d | 4073 | elf32_arm_link_hash_table_free (bfd *obfd) |
68faa637 AM |
4074 | { |
4075 | struct elf32_arm_link_hash_table *ret | |
d495ab0d | 4076 | = (struct elf32_arm_link_hash_table *) obfd->link.hash; |
68faa637 AM |
4077 | |
4078 | bfd_hash_table_free (&ret->stub_hash_table); | |
d495ab0d | 4079 | _bfd_elf_link_hash_table_free (obfd); |
68faa637 AM |
4080 | } |
4081 | ||
906e58ca NC |
4082 | /* Create an ARM elf linker hash table. */ |
4083 | ||
4084 | static struct bfd_link_hash_table * | |
4085 | elf32_arm_link_hash_table_create (bfd *abfd) | |
4086 | { | |
4087 | struct elf32_arm_link_hash_table *ret; | |
4088 | bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table); | |
4089 | ||
7bf52ea2 | 4090 | ret = (struct elf32_arm_link_hash_table *) bfd_zmalloc (amt); |
906e58ca NC |
4091 | if (ret == NULL) |
4092 | return NULL; | |
4093 | ||
4094 | if (!_bfd_elf_link_hash_table_init (& ret->root, abfd, | |
4095 | elf32_arm_link_hash_newfunc, | |
4dfe6ac6 NC |
4096 | sizeof (struct elf32_arm_link_hash_entry), |
4097 | ARM_ELF_DATA)) | |
906e58ca NC |
4098 | { |
4099 | free (ret); | |
4100 | return NULL; | |
4101 | } | |
4102 | ||
906e58ca | 4103 | ret->vfp11_fix = BFD_ARM_VFP11_FIX_NONE; |
a504d23a | 4104 | ret->stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_NONE; |
906e58ca NC |
4105 | #ifdef FOUR_WORD_PLT |
4106 | ret->plt_header_size = 16; | |
4107 | ret->plt_entry_size = 16; | |
4108 | #else | |
4109 | ret->plt_header_size = 20; | |
1db37fe6 | 4110 | ret->plt_entry_size = elf32_arm_use_long_plt_entry ? 16 : 12; |
906e58ca | 4111 | #endif |
f3185997 | 4112 | ret->use_rel = TRUE; |
906e58ca | 4113 | ret->obfd = abfd; |
617a5ada | 4114 | ret->fdpic_p = 0; |
906e58ca NC |
4115 | |
4116 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc, | |
4117 | sizeof (struct elf32_arm_stub_hash_entry))) | |
4118 | { | |
d495ab0d | 4119 | _bfd_elf_link_hash_table_free (abfd); |
906e58ca NC |
4120 | return NULL; |
4121 | } | |
d495ab0d | 4122 | ret->root.root.hash_table_free = elf32_arm_link_hash_table_free; |
906e58ca NC |
4123 | |
4124 | return &ret->root.root; | |
4125 | } | |
4126 | ||
cd1dac3d DG |
4127 | /* Determine what kind of NOPs are available. */ |
4128 | ||
4129 | static bfd_boolean | |
4130 | arch_has_arm_nop (struct elf32_arm_link_hash_table *globals) | |
4131 | { | |
4132 | const int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, | |
4133 | Tag_CPU_arch); | |
cd1dac3d | 4134 | |
60a019a0 | 4135 | /* Force return logic to be reviewed for each new architecture. */ |
031254f2 | 4136 | BFD_ASSERT (arch <= TAG_CPU_ARCH_V8_1M_MAIN); |
60a019a0 TP |
4137 | |
4138 | return (arch == TAG_CPU_ARCH_V6T2 | |
4139 | || arch == TAG_CPU_ARCH_V6K | |
4140 | || arch == TAG_CPU_ARCH_V7 | |
bff0500d TP |
4141 | || arch == TAG_CPU_ARCH_V8 |
4142 | || arch == TAG_CPU_ARCH_V8R); | |
cd1dac3d DG |
4143 | } |
4144 | ||
f4ac8484 DJ |
4145 | static bfd_boolean |
4146 | arm_stub_is_thumb (enum elf32_arm_stub_type stub_type) | |
4147 | { | |
4148 | switch (stub_type) | |
4149 | { | |
fea2b4d6 | 4150 | case arm_stub_long_branch_thumb_only: |
80c135e5 | 4151 | case arm_stub_long_branch_thumb2_only: |
d5a67c02 | 4152 | case arm_stub_long_branch_thumb2_only_pure: |
fea2b4d6 CL |
4153 | case arm_stub_long_branch_v4t_thumb_arm: |
4154 | case arm_stub_short_branch_v4t_thumb_arm: | |
ebe24dd4 | 4155 | case arm_stub_long_branch_v4t_thumb_arm_pic: |
12352d3f | 4156 | case arm_stub_long_branch_v4t_thumb_tls_pic: |
ebe24dd4 | 4157 | case arm_stub_long_branch_thumb_only_pic: |
4ba2ef8f | 4158 | case arm_stub_cmse_branch_thumb_only: |
f4ac8484 DJ |
4159 | return TRUE; |
4160 | case arm_stub_none: | |
4161 | BFD_FAIL (); | |
4162 | return FALSE; | |
4163 | break; | |
4164 | default: | |
4165 | return FALSE; | |
4166 | } | |
4167 | } | |
4168 | ||
906e58ca NC |
4169 | /* Determine the type of stub needed, if any, for a call. */ |
4170 | ||
4171 | static enum elf32_arm_stub_type | |
4172 | arm_type_of_stub (struct bfd_link_info *info, | |
4173 | asection *input_sec, | |
4174 | const Elf_Internal_Rela *rel, | |
34e77a92 | 4175 | unsigned char st_type, |
35fc36a8 | 4176 | enum arm_st_branch_type *actual_branch_type, |
906e58ca | 4177 | struct elf32_arm_link_hash_entry *hash, |
c820be07 NC |
4178 | bfd_vma destination, |
4179 | asection *sym_sec, | |
4180 | bfd *input_bfd, | |
4181 | const char *name) | |
906e58ca NC |
4182 | { |
4183 | bfd_vma location; | |
4184 | bfd_signed_vma branch_offset; | |
4185 | unsigned int r_type; | |
4186 | struct elf32_arm_link_hash_table * globals; | |
5e866f5a | 4187 | bfd_boolean thumb2, thumb2_bl, thumb_only; |
906e58ca | 4188 | enum elf32_arm_stub_type stub_type = arm_stub_none; |
5fa9e92f | 4189 | int use_plt = 0; |
35fc36a8 | 4190 | enum arm_st_branch_type branch_type = *actual_branch_type; |
34e77a92 RS |
4191 | union gotplt_union *root_plt; |
4192 | struct arm_plt_info *arm_plt; | |
d5a67c02 AV |
4193 | int arch; |
4194 | int thumb2_movw; | |
906e58ca | 4195 | |
35fc36a8 | 4196 | if (branch_type == ST_BRANCH_LONG) |
da5938a2 NC |
4197 | return stub_type; |
4198 | ||
906e58ca | 4199 | globals = elf32_arm_hash_table (info); |
4dfe6ac6 NC |
4200 | if (globals == NULL) |
4201 | return stub_type; | |
906e58ca NC |
4202 | |
4203 | thumb_only = using_thumb_only (globals); | |
906e58ca | 4204 | thumb2 = using_thumb2 (globals); |
5e866f5a | 4205 | thumb2_bl = using_thumb2_bl (globals); |
906e58ca | 4206 | |
d5a67c02 AV |
4207 | arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, Tag_CPU_arch); |
4208 | ||
4209 | /* True for architectures that implement the thumb2 movw instruction. */ | |
4210 | thumb2_movw = thumb2 || (arch == TAG_CPU_ARCH_V8M_BASE); | |
4211 | ||
906e58ca NC |
4212 | /* Determine where the call point is. */ |
4213 | location = (input_sec->output_offset | |
4214 | + input_sec->output_section->vma | |
4215 | + rel->r_offset); | |
4216 | ||
906e58ca NC |
4217 | r_type = ELF32_R_TYPE (rel->r_info); |
4218 | ||
39f21624 NC |
4219 | /* ST_BRANCH_TO_ARM is nonsense to thumb-only targets when we |
4220 | are considering a function call relocation. */ | |
c5423981 | 4221 | if (thumb_only && (r_type == R_ARM_THM_CALL || r_type == R_ARM_THM_JUMP24 |
07d6d2b8 | 4222 | || r_type == R_ARM_THM_JUMP19) |
39f21624 NC |
4223 | && branch_type == ST_BRANCH_TO_ARM) |
4224 | branch_type = ST_BRANCH_TO_THUMB; | |
4225 | ||
34e77a92 RS |
4226 | /* For TLS call relocs, it is the caller's responsibility to provide |
4227 | the address of the appropriate trampoline. */ | |
4228 | if (r_type != R_ARM_TLS_CALL | |
4229 | && r_type != R_ARM_THM_TLS_CALL | |
4ba2ef8f TP |
4230 | && elf32_arm_get_plt_info (input_bfd, globals, hash, |
4231 | ELF32_R_SYM (rel->r_info), &root_plt, | |
4232 | &arm_plt) | |
34e77a92 | 4233 | && root_plt->offset != (bfd_vma) -1) |
5fa9e92f | 4234 | { |
34e77a92 | 4235 | asection *splt; |
fe33d2fa | 4236 | |
34e77a92 RS |
4237 | if (hash == NULL || hash->is_iplt) |
4238 | splt = globals->root.iplt; | |
4239 | else | |
4240 | splt = globals->root.splt; | |
4241 | if (splt != NULL) | |
b38cadfb | 4242 | { |
34e77a92 RS |
4243 | use_plt = 1; |
4244 | ||
4245 | /* Note when dealing with PLT entries: the main PLT stub is in | |
4246 | ARM mode, so if the branch is in Thumb mode, another | |
4247 | Thumb->ARM stub will be inserted later just before the ARM | |
2df2751d CL |
4248 | PLT stub. If a long branch stub is needed, we'll add a |
4249 | Thumb->Arm one and branch directly to the ARM PLT entry. | |
4250 | Here, we have to check if a pre-PLT Thumb->ARM stub | |
4251 | is needed and if it will be close enough. */ | |
34e77a92 RS |
4252 | |
4253 | destination = (splt->output_section->vma | |
4254 | + splt->output_offset | |
4255 | + root_plt->offset); | |
4256 | st_type = STT_FUNC; | |
2df2751d CL |
4257 | |
4258 | /* Thumb branch/call to PLT: it can become a branch to ARM | |
4259 | or to Thumb. We must perform the same checks and | |
4260 | corrections as in elf32_arm_final_link_relocate. */ | |
4261 | if ((r_type == R_ARM_THM_CALL) | |
4262 | || (r_type == R_ARM_THM_JUMP24)) | |
4263 | { | |
4264 | if (globals->use_blx | |
4265 | && r_type == R_ARM_THM_CALL | |
4266 | && !thumb_only) | |
4267 | { | |
4268 | /* If the Thumb BLX instruction is available, convert | |
4269 | the BL to a BLX instruction to call the ARM-mode | |
4270 | PLT entry. */ | |
4271 | branch_type = ST_BRANCH_TO_ARM; | |
4272 | } | |
4273 | else | |
4274 | { | |
4275 | if (!thumb_only) | |
4276 | /* Target the Thumb stub before the ARM PLT entry. */ | |
4277 | destination -= PLT_THUMB_STUB_SIZE; | |
4278 | branch_type = ST_BRANCH_TO_THUMB; | |
4279 | } | |
4280 | } | |
4281 | else | |
4282 | { | |
4283 | branch_type = ST_BRANCH_TO_ARM; | |
4284 | } | |
34e77a92 | 4285 | } |
5fa9e92f | 4286 | } |
34e77a92 RS |
4287 | /* Calls to STT_GNU_IFUNC symbols should go through a PLT. */ |
4288 | BFD_ASSERT (st_type != STT_GNU_IFUNC); | |
906e58ca | 4289 | |
fe33d2fa CL |
4290 | branch_offset = (bfd_signed_vma)(destination - location); |
4291 | ||
0855e32b | 4292 | if (r_type == R_ARM_THM_CALL || r_type == R_ARM_THM_JUMP24 |
c5423981 | 4293 | || r_type == R_ARM_THM_TLS_CALL || r_type == R_ARM_THM_JUMP19) |
906e58ca | 4294 | { |
5fa9e92f CL |
4295 | /* Handle cases where: |
4296 | - this call goes too far (different Thumb/Thumb2 max | |
99059e56 | 4297 | distance) |
155d87d7 | 4298 | - it's a Thumb->Arm call and blx is not available, or it's a |
99059e56 RM |
4299 | Thumb->Arm branch (not bl). A stub is needed in this case, |
4300 | but only if this call is not through a PLT entry. Indeed, | |
695344c0 | 4301 | PLT stubs handle mode switching already. */ |
5e866f5a | 4302 | if ((!thumb2_bl |
906e58ca NC |
4303 | && (branch_offset > THM_MAX_FWD_BRANCH_OFFSET |
4304 | || (branch_offset < THM_MAX_BWD_BRANCH_OFFSET))) | |
5e866f5a | 4305 | || (thumb2_bl |
906e58ca NC |
4306 | && (branch_offset > THM2_MAX_FWD_BRANCH_OFFSET |
4307 | || (branch_offset < THM2_MAX_BWD_BRANCH_OFFSET))) | |
c5423981 TG |
4308 | || (thumb2 |
4309 | && (branch_offset > THM2_MAX_FWD_COND_BRANCH_OFFSET | |
4310 | || (branch_offset < THM2_MAX_BWD_COND_BRANCH_OFFSET)) | |
4311 | && (r_type == R_ARM_THM_JUMP19)) | |
35fc36a8 | 4312 | || (branch_type == ST_BRANCH_TO_ARM |
0855e32b NS |
4313 | && (((r_type == R_ARM_THM_CALL |
4314 | || r_type == R_ARM_THM_TLS_CALL) && !globals->use_blx) | |
c5423981 | 4315 | || (r_type == R_ARM_THM_JUMP24) |
07d6d2b8 | 4316 | || (r_type == R_ARM_THM_JUMP19)) |
5fa9e92f | 4317 | && !use_plt)) |
906e58ca | 4318 | { |
2df2751d CL |
4319 | /* If we need to insert a Thumb-Thumb long branch stub to a |
4320 | PLT, use one that branches directly to the ARM PLT | |
4321 | stub. If we pretended we'd use the pre-PLT Thumb->ARM | |
4322 | stub, undo this now. */ | |
695344c0 NC |
4323 | if ((branch_type == ST_BRANCH_TO_THUMB) && use_plt && !thumb_only) |
4324 | { | |
4325 | branch_type = ST_BRANCH_TO_ARM; | |
4326 | branch_offset += PLT_THUMB_STUB_SIZE; | |
4327 | } | |
2df2751d | 4328 | |
35fc36a8 | 4329 | if (branch_type == ST_BRANCH_TO_THUMB) |
906e58ca NC |
4330 | { |
4331 | /* Thumb to thumb. */ | |
4332 | if (!thumb_only) | |
4333 | { | |
d5a67c02 | 4334 | if (input_sec->flags & SEC_ELF_PURECODE) |
10463f39 | 4335 | _bfd_error_handler |
871b3ab2 | 4336 | (_("%pB(%pA): warning: long branch veneers used in" |
10463f39 AM |
4337 | " section with SHF_ARM_PURECODE section" |
4338 | " attribute is only supported for M-profile" | |
90b6238f | 4339 | " targets that implement the movw instruction"), |
10463f39 | 4340 | input_bfd, input_sec); |
d5a67c02 | 4341 | |
0e1862bb | 4342 | stub_type = (bfd_link_pic (info) | globals->pic_veneer) |
c2b4a39d | 4343 | /* PIC stubs. */ |
155d87d7 | 4344 | ? ((globals->use_blx |
9553db3c | 4345 | && (r_type == R_ARM_THM_CALL)) |
155d87d7 CL |
4346 | /* V5T and above. Stub starts with ARM code, so |
4347 | we must be able to switch mode before | |
4348 | reaching it, which is only possible for 'bl' | |
4349 | (ie R_ARM_THM_CALL relocation). */ | |
cf3eccff | 4350 | ? arm_stub_long_branch_any_thumb_pic |
ebe24dd4 | 4351 | /* On V4T, use Thumb code only. */ |
d3626fb0 | 4352 | : arm_stub_long_branch_v4t_thumb_thumb_pic) |
c2b4a39d CL |
4353 | |
4354 | /* non-PIC stubs. */ | |
155d87d7 | 4355 | : ((globals->use_blx |
9553db3c | 4356 | && (r_type == R_ARM_THM_CALL)) |
c2b4a39d CL |
4357 | /* V5T and above. */ |
4358 | ? arm_stub_long_branch_any_any | |
4359 | /* V4T. */ | |
d3626fb0 | 4360 | : arm_stub_long_branch_v4t_thumb_thumb); |
906e58ca NC |
4361 | } |
4362 | else | |
4363 | { | |
d5a67c02 AV |
4364 | if (thumb2_movw && (input_sec->flags & SEC_ELF_PURECODE)) |
4365 | stub_type = arm_stub_long_branch_thumb2_only_pure; | |
4366 | else | |
4367 | { | |
4368 | if (input_sec->flags & SEC_ELF_PURECODE) | |
10463f39 | 4369 | _bfd_error_handler |
871b3ab2 | 4370 | (_("%pB(%pA): warning: long branch veneers used in" |
10463f39 AM |
4371 | " section with SHF_ARM_PURECODE section" |
4372 | " attribute is only supported for M-profile" | |
90b6238f | 4373 | " targets that implement the movw instruction"), |
10463f39 | 4374 | input_bfd, input_sec); |
d5a67c02 AV |
4375 | |
4376 | stub_type = (bfd_link_pic (info) | globals->pic_veneer) | |
4377 | /* PIC stub. */ | |
4378 | ? arm_stub_long_branch_thumb_only_pic | |
4379 | /* non-PIC stub. */ | |
4380 | : (thumb2 ? arm_stub_long_branch_thumb2_only | |
4381 | : arm_stub_long_branch_thumb_only); | |
4382 | } | |
906e58ca NC |
4383 | } |
4384 | } | |
4385 | else | |
4386 | { | |
d5a67c02 | 4387 | if (input_sec->flags & SEC_ELF_PURECODE) |
10463f39 | 4388 | _bfd_error_handler |
871b3ab2 | 4389 | (_("%pB(%pA): warning: long branch veneers used in" |
10463f39 AM |
4390 | " section with SHF_ARM_PURECODE section" |
4391 | " attribute is only supported" " for M-profile" | |
90b6238f | 4392 | " targets that implement the movw instruction"), |
10463f39 | 4393 | input_bfd, input_sec); |
d5a67c02 | 4394 | |
906e58ca | 4395 | /* Thumb to arm. */ |
c820be07 NC |
4396 | if (sym_sec != NULL |
4397 | && sym_sec->owner != NULL | |
4398 | && !INTERWORK_FLAG (sym_sec->owner)) | |
4399 | { | |
4eca0228 | 4400 | _bfd_error_handler |
90b6238f AM |
4401 | (_("%pB(%s): warning: interworking not enabled;" |
4402 | " first occurrence: %pB: %s call to %s"), | |
4403 | sym_sec->owner, name, input_bfd, "Thumb", "ARM"); | |
c820be07 NC |
4404 | } |
4405 | ||
0855e32b | 4406 | stub_type = |
0e1862bb | 4407 | (bfd_link_pic (info) | globals->pic_veneer) |
c2b4a39d | 4408 | /* PIC stubs. */ |
0855e32b | 4409 | ? (r_type == R_ARM_THM_TLS_CALL |
6a631e86 | 4410 | /* TLS PIC stubs. */ |
0855e32b NS |
4411 | ? (globals->use_blx ? arm_stub_long_branch_any_tls_pic |
4412 | : arm_stub_long_branch_v4t_thumb_tls_pic) | |
4413 | : ((globals->use_blx && r_type == R_ARM_THM_CALL) | |
4414 | /* V5T PIC and above. */ | |
4415 | ? arm_stub_long_branch_any_arm_pic | |
4416 | /* V4T PIC stub. */ | |
4417 | : arm_stub_long_branch_v4t_thumb_arm_pic)) | |
c2b4a39d CL |
4418 | |
4419 | /* non-PIC stubs. */ | |
0855e32b | 4420 | : ((globals->use_blx && r_type == R_ARM_THM_CALL) |
c2b4a39d CL |
4421 | /* V5T and above. */ |
4422 | ? arm_stub_long_branch_any_any | |
4423 | /* V4T. */ | |
4424 | : arm_stub_long_branch_v4t_thumb_arm); | |
c820be07 NC |
4425 | |
4426 | /* Handle v4t short branches. */ | |
fea2b4d6 | 4427 | if ((stub_type == arm_stub_long_branch_v4t_thumb_arm) |
c820be07 NC |
4428 | && (branch_offset <= THM_MAX_FWD_BRANCH_OFFSET) |
4429 | && (branch_offset >= THM_MAX_BWD_BRANCH_OFFSET)) | |
fea2b4d6 | 4430 | stub_type = arm_stub_short_branch_v4t_thumb_arm; |
906e58ca NC |
4431 | } |
4432 | } | |
4433 | } | |
fe33d2fa CL |
4434 | else if (r_type == R_ARM_CALL |
4435 | || r_type == R_ARM_JUMP24 | |
0855e32b NS |
4436 | || r_type == R_ARM_PLT32 |
4437 | || r_type == R_ARM_TLS_CALL) | |
906e58ca | 4438 | { |
d5a67c02 | 4439 | if (input_sec->flags & SEC_ELF_PURECODE) |
10463f39 | 4440 | _bfd_error_handler |
871b3ab2 | 4441 | (_("%pB(%pA): warning: long branch veneers used in" |
10463f39 AM |
4442 | " section with SHF_ARM_PURECODE section" |
4443 | " attribute is only supported for M-profile" | |
90b6238f | 4444 | " targets that implement the movw instruction"), |
10463f39 | 4445 | input_bfd, input_sec); |
35fc36a8 | 4446 | if (branch_type == ST_BRANCH_TO_THUMB) |
906e58ca NC |
4447 | { |
4448 | /* Arm to thumb. */ | |
c820be07 NC |
4449 | |
4450 | if (sym_sec != NULL | |
4451 | && sym_sec->owner != NULL | |
4452 | && !INTERWORK_FLAG (sym_sec->owner)) | |
4453 | { | |
4eca0228 | 4454 | _bfd_error_handler |
90b6238f AM |
4455 | (_("%pB(%s): warning: interworking not enabled;" |
4456 | " first occurrence: %pB: %s call to %s"), | |
4457 | sym_sec->owner, name, input_bfd, "ARM", "Thumb"); | |
c820be07 NC |
4458 | } |
4459 | ||
4460 | /* We have an extra 2-bytes reach because of | |
4461 | the mode change (bit 24 (H) of BLX encoding). */ | |
4116d8d7 PB |
4462 | if (branch_offset > (ARM_MAX_FWD_BRANCH_OFFSET + 2) |
4463 | || (branch_offset < ARM_MAX_BWD_BRANCH_OFFSET) | |
0855e32b | 4464 | || (r_type == R_ARM_CALL && !globals->use_blx) |
4116d8d7 PB |
4465 | || (r_type == R_ARM_JUMP24) |
4466 | || (r_type == R_ARM_PLT32)) | |
906e58ca | 4467 | { |
0e1862bb | 4468 | stub_type = (bfd_link_pic (info) | globals->pic_veneer) |
c2b4a39d | 4469 | /* PIC stubs. */ |
ebe24dd4 CL |
4470 | ? ((globals->use_blx) |
4471 | /* V5T and above. */ | |
4472 | ? arm_stub_long_branch_any_thumb_pic | |
4473 | /* V4T stub. */ | |
4474 | : arm_stub_long_branch_v4t_arm_thumb_pic) | |
4475 | ||
c2b4a39d CL |
4476 | /* non-PIC stubs. */ |
4477 | : ((globals->use_blx) | |
4478 | /* V5T and above. */ | |
4479 | ? arm_stub_long_branch_any_any | |
4480 | /* V4T. */ | |
4481 | : arm_stub_long_branch_v4t_arm_thumb); | |
906e58ca NC |
4482 | } |
4483 | } | |
4484 | else | |
4485 | { | |
4486 | /* Arm to arm. */ | |
4487 | if (branch_offset > ARM_MAX_FWD_BRANCH_OFFSET | |
4488 | || (branch_offset < ARM_MAX_BWD_BRANCH_OFFSET)) | |
4489 | { | |
0855e32b | 4490 | stub_type = |
0e1862bb | 4491 | (bfd_link_pic (info) | globals->pic_veneer) |
c2b4a39d | 4492 | /* PIC stubs. */ |
0855e32b | 4493 | ? (r_type == R_ARM_TLS_CALL |
6a631e86 | 4494 | /* TLS PIC Stub. */ |
0855e32b | 4495 | ? arm_stub_long_branch_any_tls_pic |
7a89b94e NC |
4496 | : (globals->nacl_p |
4497 | ? arm_stub_long_branch_arm_nacl_pic | |
4498 | : arm_stub_long_branch_any_arm_pic)) | |
c2b4a39d | 4499 | /* non-PIC stubs. */ |
7a89b94e NC |
4500 | : (globals->nacl_p |
4501 | ? arm_stub_long_branch_arm_nacl | |
4502 | : arm_stub_long_branch_any_any); | |
906e58ca NC |
4503 | } |
4504 | } | |
4505 | } | |
4506 | ||
fe33d2fa CL |
4507 | /* If a stub is needed, record the actual destination type. */ |
4508 | if (stub_type != arm_stub_none) | |
35fc36a8 | 4509 | *actual_branch_type = branch_type; |
fe33d2fa | 4510 | |
906e58ca NC |
4511 | return stub_type; |
4512 | } | |
4513 | ||
4514 | /* Build a name for an entry in the stub hash table. */ | |
4515 | ||
4516 | static char * | |
4517 | elf32_arm_stub_name (const asection *input_section, | |
4518 | const asection *sym_sec, | |
4519 | const struct elf32_arm_link_hash_entry *hash, | |
fe33d2fa CL |
4520 | const Elf_Internal_Rela *rel, |
4521 | enum elf32_arm_stub_type stub_type) | |
906e58ca NC |
4522 | { |
4523 | char *stub_name; | |
4524 | bfd_size_type len; | |
4525 | ||
4526 | if (hash) | |
4527 | { | |
fe33d2fa | 4528 | len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 8 + 1 + 2 + 1; |
21d799b5 | 4529 | stub_name = (char *) bfd_malloc (len); |
906e58ca | 4530 | if (stub_name != NULL) |
fe33d2fa | 4531 | sprintf (stub_name, "%08x_%s+%x_%d", |
906e58ca NC |
4532 | input_section->id & 0xffffffff, |
4533 | hash->root.root.root.string, | |
fe33d2fa CL |
4534 | (int) rel->r_addend & 0xffffffff, |
4535 | (int) stub_type); | |
906e58ca NC |
4536 | } |
4537 | else | |
4538 | { | |
fe33d2fa | 4539 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1 + 2 + 1; |
21d799b5 | 4540 | stub_name = (char *) bfd_malloc (len); |
906e58ca | 4541 | if (stub_name != NULL) |
fe33d2fa | 4542 | sprintf (stub_name, "%08x_%x:%x+%x_%d", |
906e58ca NC |
4543 | input_section->id & 0xffffffff, |
4544 | sym_sec->id & 0xffffffff, | |
0855e32b NS |
4545 | ELF32_R_TYPE (rel->r_info) == R_ARM_TLS_CALL |
4546 | || ELF32_R_TYPE (rel->r_info) == R_ARM_THM_TLS_CALL | |
4547 | ? 0 : (int) ELF32_R_SYM (rel->r_info) & 0xffffffff, | |
fe33d2fa CL |
4548 | (int) rel->r_addend & 0xffffffff, |
4549 | (int) stub_type); | |
906e58ca NC |
4550 | } |
4551 | ||
4552 | return stub_name; | |
4553 | } | |
4554 | ||
4555 | /* Look up an entry in the stub hash. Stub entries are cached because | |
4556 | creating the stub name takes a bit of time. */ | |
4557 | ||
4558 | static struct elf32_arm_stub_hash_entry * | |
4559 | elf32_arm_get_stub_entry (const asection *input_section, | |
4560 | const asection *sym_sec, | |
4561 | struct elf_link_hash_entry *hash, | |
4562 | const Elf_Internal_Rela *rel, | |
fe33d2fa CL |
4563 | struct elf32_arm_link_hash_table *htab, |
4564 | enum elf32_arm_stub_type stub_type) | |
906e58ca NC |
4565 | { |
4566 | struct elf32_arm_stub_hash_entry *stub_entry; | |
4567 | struct elf32_arm_link_hash_entry *h = (struct elf32_arm_link_hash_entry *) hash; | |
4568 | const asection *id_sec; | |
4569 | ||
4570 | if ((input_section->flags & SEC_CODE) == 0) | |
4571 | return NULL; | |
4572 | ||
4573 | /* If this input section is part of a group of sections sharing one | |
4574 | stub section, then use the id of the first section in the group. | |
4575 | Stub names need to include a section id, as there may well be | |
4576 | more than one stub used to reach say, printf, and we need to | |
4577 | distinguish between them. */ | |
c2abbbeb | 4578 | BFD_ASSERT (input_section->id <= htab->top_id); |
906e58ca NC |
4579 | id_sec = htab->stub_group[input_section->id].link_sec; |
4580 | ||
4581 | if (h != NULL && h->stub_cache != NULL | |
4582 | && h->stub_cache->h == h | |
fe33d2fa CL |
4583 | && h->stub_cache->id_sec == id_sec |
4584 | && h->stub_cache->stub_type == stub_type) | |
906e58ca NC |
4585 | { |
4586 | stub_entry = h->stub_cache; | |
4587 | } | |
4588 | else | |
4589 | { | |
4590 | char *stub_name; | |
4591 | ||
fe33d2fa | 4592 | stub_name = elf32_arm_stub_name (id_sec, sym_sec, h, rel, stub_type); |
906e58ca NC |
4593 | if (stub_name == NULL) |
4594 | return NULL; | |
4595 | ||
4596 | stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, | |
4597 | stub_name, FALSE, FALSE); | |
4598 | if (h != NULL) | |
4599 | h->stub_cache = stub_entry; | |
4600 | ||
4601 | free (stub_name); | |
4602 | } | |
4603 | ||
4604 | return stub_entry; | |
4605 | } | |
4606 | ||
daa4adae TP |
4607 | /* Whether veneers of type STUB_TYPE require to be in a dedicated output |
4608 | section. */ | |
4609 | ||
4610 | static bfd_boolean | |
4611 | arm_dedicated_stub_output_section_required (enum elf32_arm_stub_type stub_type) | |
4612 | { | |
4613 | if (stub_type >= max_stub_type) | |
4614 | abort (); /* Should be unreachable. */ | |
4615 | ||
4ba2ef8f TP |
4616 | switch (stub_type) |
4617 | { | |
4618 | case arm_stub_cmse_branch_thumb_only: | |
4619 | return TRUE; | |
4620 | ||
4621 | default: | |
4622 | return FALSE; | |
4623 | } | |
4624 | ||
4625 | abort (); /* Should be unreachable. */ | |
daa4adae TP |
4626 | } |
4627 | ||
4628 | /* Required alignment (as a power of 2) for the dedicated section holding | |
4629 | veneers of type STUB_TYPE, or 0 if veneers of this type are interspersed | |
4630 | with input sections. */ | |
4631 | ||
4632 | static int | |
4633 | arm_dedicated_stub_output_section_required_alignment | |
4634 | (enum elf32_arm_stub_type stub_type) | |
4635 | { | |
4636 | if (stub_type >= max_stub_type) | |
4637 | abort (); /* Should be unreachable. */ | |
4638 | ||
4ba2ef8f TP |
4639 | switch (stub_type) |
4640 | { | |
4641 | /* Vectors of Secure Gateway veneers must be aligned on 32byte | |
4642 | boundary. */ | |
4643 | case arm_stub_cmse_branch_thumb_only: | |
4644 | return 5; | |
4645 | ||
4646 | default: | |
4647 | BFD_ASSERT (!arm_dedicated_stub_output_section_required (stub_type)); | |
4648 | return 0; | |
4649 | } | |
4650 | ||
4651 | abort (); /* Should be unreachable. */ | |
daa4adae TP |
4652 | } |
4653 | ||
4654 | /* Name of the dedicated output section to put veneers of type STUB_TYPE, or | |
4655 | NULL if veneers of this type are interspersed with input sections. */ | |
4656 | ||
4657 | static const char * | |
4658 | arm_dedicated_stub_output_section_name (enum elf32_arm_stub_type stub_type) | |
4659 | { | |
4660 | if (stub_type >= max_stub_type) | |
4661 | abort (); /* Should be unreachable. */ | |
4662 | ||
4ba2ef8f TP |
4663 | switch (stub_type) |
4664 | { | |
4665 | case arm_stub_cmse_branch_thumb_only: | |
4666 | return ".gnu.sgstubs"; | |
4667 | ||
4668 | default: | |
4669 | BFD_ASSERT (!arm_dedicated_stub_output_section_required (stub_type)); | |
4670 | return NULL; | |
4671 | } | |
4672 | ||
4673 | abort (); /* Should be unreachable. */ | |
daa4adae TP |
4674 | } |
4675 | ||
4676 | /* If veneers of type STUB_TYPE should go in a dedicated output section, | |
4677 | returns the address of the hash table field in HTAB holding a pointer to the | |
4678 | corresponding input section. Otherwise, returns NULL. */ | |
4679 | ||
4680 | static asection ** | |
4ba2ef8f TP |
4681 | arm_dedicated_stub_input_section_ptr (struct elf32_arm_link_hash_table *htab, |
4682 | enum elf32_arm_stub_type stub_type) | |
daa4adae TP |
4683 | { |
4684 | if (stub_type >= max_stub_type) | |
4685 | abort (); /* Should be unreachable. */ | |
4686 | ||
4ba2ef8f TP |
4687 | switch (stub_type) |
4688 | { | |
4689 | case arm_stub_cmse_branch_thumb_only: | |
4690 | return &htab->cmse_stub_sec; | |
4691 | ||
4692 | default: | |
4693 | BFD_ASSERT (!arm_dedicated_stub_output_section_required (stub_type)); | |
4694 | return NULL; | |
4695 | } | |
4696 | ||
4697 | abort (); /* Should be unreachable. */ | |
daa4adae TP |
4698 | } |
4699 | ||
4700 | /* Find or create a stub section to contain a stub of type STUB_TYPE. SECTION | |
4701 | is the section that branch into veneer and can be NULL if stub should go in | |
4702 | a dedicated output section. Returns a pointer to the stub section, and the | |
4703 | section to which the stub section will be attached (in *LINK_SEC_P). | |
48229727 | 4704 | LINK_SEC_P may be NULL. */ |
906e58ca | 4705 | |
48229727 JB |
4706 | static asection * |
4707 | elf32_arm_create_or_find_stub_sec (asection **link_sec_p, asection *section, | |
daa4adae TP |
4708 | struct elf32_arm_link_hash_table *htab, |
4709 | enum elf32_arm_stub_type stub_type) | |
906e58ca | 4710 | { |
daa4adae TP |
4711 | asection *link_sec, *out_sec, **stub_sec_p; |
4712 | const char *stub_sec_prefix; | |
4713 | bfd_boolean dedicated_output_section = | |
4714 | arm_dedicated_stub_output_section_required (stub_type); | |
4715 | int align; | |
906e58ca | 4716 | |
daa4adae | 4717 | if (dedicated_output_section) |
906e58ca | 4718 | { |
daa4adae TP |
4719 | bfd *output_bfd = htab->obfd; |
4720 | const char *out_sec_name = | |
4721 | arm_dedicated_stub_output_section_name (stub_type); | |
4722 | link_sec = NULL; | |
4723 | stub_sec_p = arm_dedicated_stub_input_section_ptr (htab, stub_type); | |
4724 | stub_sec_prefix = out_sec_name; | |
4725 | align = arm_dedicated_stub_output_section_required_alignment (stub_type); | |
4726 | out_sec = bfd_get_section_by_name (output_bfd, out_sec_name); | |
4727 | if (out_sec == NULL) | |
906e58ca | 4728 | { |
90b6238f | 4729 | _bfd_error_handler (_("no address assigned to the veneers output " |
4eca0228 | 4730 | "section %s"), out_sec_name); |
daa4adae | 4731 | return NULL; |
906e58ca | 4732 | } |
daa4adae TP |
4733 | } |
4734 | else | |
4735 | { | |
c2abbbeb | 4736 | BFD_ASSERT (section->id <= htab->top_id); |
daa4adae TP |
4737 | link_sec = htab->stub_group[section->id].link_sec; |
4738 | BFD_ASSERT (link_sec != NULL); | |
4739 | stub_sec_p = &htab->stub_group[section->id].stub_sec; | |
4740 | if (*stub_sec_p == NULL) | |
4741 | stub_sec_p = &htab->stub_group[link_sec->id].stub_sec; | |
4742 | stub_sec_prefix = link_sec->name; | |
4743 | out_sec = link_sec->output_section; | |
4744 | align = htab->nacl_p ? 4 : 3; | |
906e58ca | 4745 | } |
b38cadfb | 4746 | |
daa4adae TP |
4747 | if (*stub_sec_p == NULL) |
4748 | { | |
4749 | size_t namelen; | |
4750 | bfd_size_type len; | |
4751 | char *s_name; | |
4752 | ||
4753 | namelen = strlen (stub_sec_prefix); | |
4754 | len = namelen + sizeof (STUB_SUFFIX); | |
4755 | s_name = (char *) bfd_alloc (htab->stub_bfd, len); | |
4756 | if (s_name == NULL) | |
4757 | return NULL; | |
4758 | ||
4759 | memcpy (s_name, stub_sec_prefix, namelen); | |
4760 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
4761 | *stub_sec_p = (*htab->add_stub_section) (s_name, out_sec, link_sec, | |
4762 | align); | |
4763 | if (*stub_sec_p == NULL) | |
4764 | return NULL; | |
4765 | ||
4766 | out_sec->flags |= SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE | |
4767 | | SEC_HAS_CONTENTS | SEC_RELOC | SEC_IN_MEMORY | |
4768 | | SEC_KEEP; | |
4769 | } | |
4770 | ||
4771 | if (!dedicated_output_section) | |
4772 | htab->stub_group[section->id].stub_sec = *stub_sec_p; | |
4773 | ||
48229727 JB |
4774 | if (link_sec_p) |
4775 | *link_sec_p = link_sec; | |
b38cadfb | 4776 | |
daa4adae | 4777 | return *stub_sec_p; |
48229727 JB |
4778 | } |
4779 | ||
4780 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
4781 | stub entry are initialised. */ | |
4782 | ||
4783 | static struct elf32_arm_stub_hash_entry * | |
daa4adae TP |
4784 | elf32_arm_add_stub (const char *stub_name, asection *section, |
4785 | struct elf32_arm_link_hash_table *htab, | |
4786 | enum elf32_arm_stub_type stub_type) | |
48229727 JB |
4787 | { |
4788 | asection *link_sec; | |
4789 | asection *stub_sec; | |
4790 | struct elf32_arm_stub_hash_entry *stub_entry; | |
4791 | ||
daa4adae TP |
4792 | stub_sec = elf32_arm_create_or_find_stub_sec (&link_sec, section, htab, |
4793 | stub_type); | |
48229727 JB |
4794 | if (stub_sec == NULL) |
4795 | return NULL; | |
906e58ca NC |
4796 | |
4797 | /* Enter this entry into the linker stub hash table. */ | |
4798 | stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
4799 | TRUE, FALSE); | |
4800 | if (stub_entry == NULL) | |
4801 | { | |
6bde4c52 TP |
4802 | if (section == NULL) |
4803 | section = stub_sec; | |
871b3ab2 | 4804 | _bfd_error_handler (_("%pB: cannot create stub entry %s"), |
4eca0228 | 4805 | section->owner, stub_name); |
906e58ca NC |
4806 | return NULL; |
4807 | } | |
4808 | ||
4809 | stub_entry->stub_sec = stub_sec; | |
0955507f | 4810 | stub_entry->stub_offset = (bfd_vma) -1; |
906e58ca NC |
4811 | stub_entry->id_sec = link_sec; |
4812 | ||
906e58ca NC |
4813 | return stub_entry; |
4814 | } | |
4815 | ||
4816 | /* Store an Arm insn into an output section not processed by | |
4817 | elf32_arm_write_section. */ | |
4818 | ||
4819 | static void | |
8029a119 NC |
4820 | put_arm_insn (struct elf32_arm_link_hash_table * htab, |
4821 | bfd * output_bfd, bfd_vma val, void * ptr) | |
906e58ca NC |
4822 | { |
4823 | if (htab->byteswap_code != bfd_little_endian (output_bfd)) | |
4824 | bfd_putl32 (val, ptr); | |
4825 | else | |
4826 | bfd_putb32 (val, ptr); | |
4827 | } | |
4828 | ||
4829 | /* Store a 16-bit Thumb insn into an output section not processed by | |
4830 | elf32_arm_write_section. */ | |
4831 | ||
4832 | static void | |
8029a119 NC |
4833 | put_thumb_insn (struct elf32_arm_link_hash_table * htab, |
4834 | bfd * output_bfd, bfd_vma val, void * ptr) | |
906e58ca NC |
4835 | { |
4836 | if (htab->byteswap_code != bfd_little_endian (output_bfd)) | |
4837 | bfd_putl16 (val, ptr); | |
4838 | else | |
4839 | bfd_putb16 (val, ptr); | |
4840 | } | |
4841 | ||
a504d23a LA |
4842 | /* Store a Thumb2 insn into an output section not processed by |
4843 | elf32_arm_write_section. */ | |
4844 | ||
4845 | static void | |
4846 | put_thumb2_insn (struct elf32_arm_link_hash_table * htab, | |
b98e6871 | 4847 | bfd * output_bfd, bfd_vma val, bfd_byte * ptr) |
a504d23a LA |
4848 | { |
4849 | /* T2 instructions are 16-bit streamed. */ | |
4850 | if (htab->byteswap_code != bfd_little_endian (output_bfd)) | |
4851 | { | |
4852 | bfd_putl16 ((val >> 16) & 0xffff, ptr); | |
4853 | bfd_putl16 ((val & 0xffff), ptr + 2); | |
4854 | } | |
4855 | else | |
4856 | { | |
4857 | bfd_putb16 ((val >> 16) & 0xffff, ptr); | |
4858 | bfd_putb16 ((val & 0xffff), ptr + 2); | |
4859 | } | |
4860 | } | |
4861 | ||
0855e32b NS |
4862 | /* If it's possible to change R_TYPE to a more efficient access |
4863 | model, return the new reloc type. */ | |
4864 | ||
4865 | static unsigned | |
b38cadfb | 4866 | elf32_arm_tls_transition (struct bfd_link_info *info, int r_type, |
0855e32b NS |
4867 | struct elf_link_hash_entry *h) |
4868 | { | |
4869 | int is_local = (h == NULL); | |
4870 | ||
0e1862bb L |
4871 | if (bfd_link_pic (info) |
4872 | || (h && h->root.type == bfd_link_hash_undefweak)) | |
0855e32b NS |
4873 | return r_type; |
4874 | ||
b38cadfb | 4875 | /* We do not support relaxations for Old TLS models. */ |
0855e32b NS |
4876 | switch (r_type) |
4877 | { | |
4878 | case R_ARM_TLS_GOTDESC: | |
4879 | case R_ARM_TLS_CALL: | |
4880 | case R_ARM_THM_TLS_CALL: | |
4881 | case R_ARM_TLS_DESCSEQ: | |
4882 | case R_ARM_THM_TLS_DESCSEQ: | |
4883 | return is_local ? R_ARM_TLS_LE32 : R_ARM_TLS_IE32; | |
4884 | } | |
4885 | ||
4886 | return r_type; | |
4887 | } | |
4888 | ||
48229727 JB |
4889 | static bfd_reloc_status_type elf32_arm_final_link_relocate |
4890 | (reloc_howto_type *, bfd *, bfd *, asection *, bfd_byte *, | |
4891 | Elf_Internal_Rela *, bfd_vma, struct bfd_link_info *, asection *, | |
34e77a92 RS |
4892 | const char *, unsigned char, enum arm_st_branch_type, |
4893 | struct elf_link_hash_entry *, bfd_boolean *, char **); | |
48229727 | 4894 | |
4563a860 JB |
4895 | static unsigned int |
4896 | arm_stub_required_alignment (enum elf32_arm_stub_type stub_type) | |
4897 | { | |
4898 | switch (stub_type) | |
4899 | { | |
4900 | case arm_stub_a8_veneer_b_cond: | |
4901 | case arm_stub_a8_veneer_b: | |
4902 | case arm_stub_a8_veneer_bl: | |
4903 | return 2; | |
4904 | ||
4905 | case arm_stub_long_branch_any_any: | |
4906 | case arm_stub_long_branch_v4t_arm_thumb: | |
4907 | case arm_stub_long_branch_thumb_only: | |
80c135e5 | 4908 | case arm_stub_long_branch_thumb2_only: |
d5a67c02 | 4909 | case arm_stub_long_branch_thumb2_only_pure: |
4563a860 JB |
4910 | case arm_stub_long_branch_v4t_thumb_thumb: |
4911 | case arm_stub_long_branch_v4t_thumb_arm: | |
4912 | case arm_stub_short_branch_v4t_thumb_arm: | |
4913 | case arm_stub_long_branch_any_arm_pic: | |
4914 | case arm_stub_long_branch_any_thumb_pic: | |
4915 | case arm_stub_long_branch_v4t_thumb_thumb_pic: | |
4916 | case arm_stub_long_branch_v4t_arm_thumb_pic: | |
4917 | case arm_stub_long_branch_v4t_thumb_arm_pic: | |
4918 | case arm_stub_long_branch_thumb_only_pic: | |
0855e32b NS |
4919 | case arm_stub_long_branch_any_tls_pic: |
4920 | case arm_stub_long_branch_v4t_thumb_tls_pic: | |
4ba2ef8f | 4921 | case arm_stub_cmse_branch_thumb_only: |
4563a860 JB |
4922 | case arm_stub_a8_veneer_blx: |
4923 | return 4; | |
b38cadfb | 4924 | |
7a89b94e NC |
4925 | case arm_stub_long_branch_arm_nacl: |
4926 | case arm_stub_long_branch_arm_nacl_pic: | |
4927 | return 16; | |
4928 | ||
4563a860 JB |
4929 | default: |
4930 | abort (); /* Should be unreachable. */ | |
4931 | } | |
4932 | } | |
4933 | ||
4f4faa4d TP |
4934 | /* Returns whether stubs of type STUB_TYPE take over the symbol they are |
4935 | veneering (TRUE) or have their own symbol (FALSE). */ | |
4936 | ||
4937 | static bfd_boolean | |
4938 | arm_stub_sym_claimed (enum elf32_arm_stub_type stub_type) | |
4939 | { | |
4940 | if (stub_type >= max_stub_type) | |
4941 | abort (); /* Should be unreachable. */ | |
4942 | ||
4ba2ef8f TP |
4943 | switch (stub_type) |
4944 | { | |
4945 | case arm_stub_cmse_branch_thumb_only: | |
4946 | return TRUE; | |
4947 | ||
4948 | default: | |
4949 | return FALSE; | |
4950 | } | |
4951 | ||
4952 | abort (); /* Should be unreachable. */ | |
4f4faa4d TP |
4953 | } |
4954 | ||
d7c5bd02 TP |
4955 | /* Returns the padding needed for the dedicated section used stubs of type |
4956 | STUB_TYPE. */ | |
4957 | ||
4958 | static int | |
4959 | arm_dedicated_stub_section_padding (enum elf32_arm_stub_type stub_type) | |
4960 | { | |
4961 | if (stub_type >= max_stub_type) | |
4962 | abort (); /* Should be unreachable. */ | |
4963 | ||
4ba2ef8f TP |
4964 | switch (stub_type) |
4965 | { | |
4966 | case arm_stub_cmse_branch_thumb_only: | |
4967 | return 32; | |
4968 | ||
4969 | default: | |
4970 | return 0; | |
4971 | } | |
4972 | ||
4973 | abort (); /* Should be unreachable. */ | |
d7c5bd02 TP |
4974 | } |
4975 | ||
0955507f TP |
4976 | /* If veneers of type STUB_TYPE should go in a dedicated output section, |
4977 | returns the address of the hash table field in HTAB holding the offset at | |
4978 | which new veneers should be layed out in the stub section. */ | |
4979 | ||
4980 | static bfd_vma* | |
4981 | arm_new_stubs_start_offset_ptr (struct elf32_arm_link_hash_table *htab, | |
4982 | enum elf32_arm_stub_type stub_type) | |
4983 | { | |
4984 | switch (stub_type) | |
4985 | { | |
4986 | case arm_stub_cmse_branch_thumb_only: | |
4987 | return &htab->new_cmse_stub_offset; | |
4988 | ||
4989 | default: | |
4990 | BFD_ASSERT (!arm_dedicated_stub_output_section_required (stub_type)); | |
4991 | return NULL; | |
4992 | } | |
4993 | } | |
4994 | ||
906e58ca NC |
4995 | static bfd_boolean |
4996 | arm_build_one_stub (struct bfd_hash_entry *gen_entry, | |
4997 | void * in_arg) | |
4998 | { | |
7a89b94e | 4999 | #define MAXRELOCS 3 |
0955507f | 5000 | bfd_boolean removed_sg_veneer; |
906e58ca | 5001 | struct elf32_arm_stub_hash_entry *stub_entry; |
4dfe6ac6 | 5002 | struct elf32_arm_link_hash_table *globals; |
906e58ca | 5003 | struct bfd_link_info *info; |
906e58ca NC |
5004 | asection *stub_sec; |
5005 | bfd *stub_bfd; | |
906e58ca NC |
5006 | bfd_byte *loc; |
5007 | bfd_vma sym_value; | |
5008 | int template_size; | |
5009 | int size; | |
d3ce72d0 | 5010 | const insn_sequence *template_sequence; |
906e58ca | 5011 | int i; |
48229727 JB |
5012 | int stub_reloc_idx[MAXRELOCS] = {-1, -1}; |
5013 | int stub_reloc_offset[MAXRELOCS] = {0, 0}; | |
5014 | int nrelocs = 0; | |
0955507f | 5015 | int just_allocated = 0; |
906e58ca NC |
5016 | |
5017 | /* Massage our args to the form they really have. */ | |
5018 | stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry; | |
5019 | info = (struct bfd_link_info *) in_arg; | |
5020 | ||
5021 | globals = elf32_arm_hash_table (info); | |
4dfe6ac6 NC |
5022 | if (globals == NULL) |
5023 | return FALSE; | |
906e58ca | 5024 | |
906e58ca NC |
5025 | stub_sec = stub_entry->stub_sec; |
5026 | ||
4dfe6ac6 | 5027 | if ((globals->fix_cortex_a8 < 0) |
4563a860 JB |
5028 | != (arm_stub_required_alignment (stub_entry->stub_type) == 2)) |
5029 | /* We have to do less-strictly-aligned fixes last. */ | |
eb7c4339 | 5030 | return TRUE; |
fe33d2fa | 5031 | |
0955507f TP |
5032 | /* Assign a slot at the end of section if none assigned yet. */ |
5033 | if (stub_entry->stub_offset == (bfd_vma) -1) | |
5034 | { | |
5035 | stub_entry->stub_offset = stub_sec->size; | |
5036 | just_allocated = 1; | |
5037 | } | |
906e58ca NC |
5038 | loc = stub_sec->contents + stub_entry->stub_offset; |
5039 | ||
5040 | stub_bfd = stub_sec->owner; | |
5041 | ||
906e58ca NC |
5042 | /* This is the address of the stub destination. */ |
5043 | sym_value = (stub_entry->target_value | |
5044 | + stub_entry->target_section->output_offset | |
5045 | + stub_entry->target_section->output_section->vma); | |
5046 | ||
d3ce72d0 | 5047 | template_sequence = stub_entry->stub_template; |
461a49ca | 5048 | template_size = stub_entry->stub_template_size; |
906e58ca NC |
5049 | |
5050 | size = 0; | |
461a49ca | 5051 | for (i = 0; i < template_size; i++) |
906e58ca | 5052 | { |
d3ce72d0 | 5053 | switch (template_sequence[i].type) |
461a49ca DJ |
5054 | { |
5055 | case THUMB16_TYPE: | |
48229727 | 5056 | { |
d3ce72d0 NC |
5057 | bfd_vma data = (bfd_vma) template_sequence[i].data; |
5058 | if (template_sequence[i].reloc_addend != 0) | |
48229727 | 5059 | { |
99059e56 RM |
5060 | /* We've borrowed the reloc_addend field to mean we should |
5061 | insert a condition code into this (Thumb-1 branch) | |
5062 | instruction. See THUMB16_BCOND_INSN. */ | |
5063 | BFD_ASSERT ((data & 0xff00) == 0xd000); | |
5064 | data |= ((stub_entry->orig_insn >> 22) & 0xf) << 8; | |
48229727 | 5065 | } |
fe33d2fa | 5066 | bfd_put_16 (stub_bfd, data, loc + size); |
48229727 JB |
5067 | size += 2; |
5068 | } | |
461a49ca | 5069 | break; |
906e58ca | 5070 | |
48229727 | 5071 | case THUMB32_TYPE: |
fe33d2fa CL |
5072 | bfd_put_16 (stub_bfd, |
5073 | (template_sequence[i].data >> 16) & 0xffff, | |
5074 | loc + size); | |
5075 | bfd_put_16 (stub_bfd, template_sequence[i].data & 0xffff, | |
5076 | loc + size + 2); | |
99059e56 RM |
5077 | if (template_sequence[i].r_type != R_ARM_NONE) |
5078 | { | |
5079 | stub_reloc_idx[nrelocs] = i; | |
5080 | stub_reloc_offset[nrelocs++] = size; | |
5081 | } | |
5082 | size += 4; | |
5083 | break; | |
48229727 | 5084 | |
461a49ca | 5085 | case ARM_TYPE: |
fe33d2fa CL |
5086 | bfd_put_32 (stub_bfd, template_sequence[i].data, |
5087 | loc + size); | |
461a49ca DJ |
5088 | /* Handle cases where the target is encoded within the |
5089 | instruction. */ | |
d3ce72d0 | 5090 | if (template_sequence[i].r_type == R_ARM_JUMP24) |
461a49ca | 5091 | { |
48229727 JB |
5092 | stub_reloc_idx[nrelocs] = i; |
5093 | stub_reloc_offset[nrelocs++] = size; | |
461a49ca DJ |
5094 | } |
5095 | size += 4; | |
5096 | break; | |
5097 | ||
5098 | case DATA_TYPE: | |
d3ce72d0 | 5099 | bfd_put_32 (stub_bfd, template_sequence[i].data, loc + size); |
48229727 JB |
5100 | stub_reloc_idx[nrelocs] = i; |
5101 | stub_reloc_offset[nrelocs++] = size; | |
461a49ca DJ |
5102 | size += 4; |
5103 | break; | |
5104 | ||
5105 | default: | |
5106 | BFD_FAIL (); | |
5107 | return FALSE; | |
5108 | } | |
906e58ca | 5109 | } |
461a49ca | 5110 | |
0955507f TP |
5111 | if (just_allocated) |
5112 | stub_sec->size += size; | |
906e58ca | 5113 | |
461a49ca DJ |
5114 | /* Stub size has already been computed in arm_size_one_stub. Check |
5115 | consistency. */ | |
5116 | BFD_ASSERT (size == stub_entry->stub_size); | |
5117 | ||
906e58ca | 5118 | /* Destination is Thumb. Force bit 0 to 1 to reflect this. */ |
35fc36a8 | 5119 | if (stub_entry->branch_type == ST_BRANCH_TO_THUMB) |
906e58ca NC |
5120 | sym_value |= 1; |
5121 | ||
0955507f TP |
5122 | /* Assume non empty slots have at least one and at most MAXRELOCS entries |
5123 | to relocate in each stub. */ | |
5124 | removed_sg_veneer = | |
5125 | (size == 0 && stub_entry->stub_type == arm_stub_cmse_branch_thumb_only); | |
5126 | BFD_ASSERT (removed_sg_veneer || (nrelocs != 0 && nrelocs <= MAXRELOCS)); | |
c820be07 | 5127 | |
48229727 | 5128 | for (i = 0; i < nrelocs; i++) |
8d9d9490 TP |
5129 | { |
5130 | Elf_Internal_Rela rel; | |
5131 | bfd_boolean unresolved_reloc; | |
5132 | char *error_message; | |
5133 | bfd_vma points_to = | |
5134 | sym_value + template_sequence[stub_reloc_idx[i]].reloc_addend; | |
5135 | ||
5136 | rel.r_offset = stub_entry->stub_offset + stub_reloc_offset[i]; | |
5137 | rel.r_info = ELF32_R_INFO (0, | |
5138 | template_sequence[stub_reloc_idx[i]].r_type); | |
5139 | rel.r_addend = 0; | |
5140 | ||
5141 | if (stub_entry->stub_type == arm_stub_a8_veneer_b_cond && i == 0) | |
5142 | /* The first relocation in the elf32_arm_stub_a8_veneer_b_cond[] | |
5143 | template should refer back to the instruction after the original | |
5144 | branch. We use target_section as Cortex-A8 erratum workaround stubs | |
5145 | are only generated when both source and target are in the same | |
5146 | section. */ | |
5147 | points_to = stub_entry->target_section->output_section->vma | |
5148 | + stub_entry->target_section->output_offset | |
5149 | + stub_entry->source_value; | |
5150 | ||
5151 | elf32_arm_final_link_relocate (elf32_arm_howto_from_type | |
5152 | (template_sequence[stub_reloc_idx[i]].r_type), | |
5153 | stub_bfd, info->output_bfd, stub_sec, stub_sec->contents, &rel, | |
5154 | points_to, info, stub_entry->target_section, "", STT_FUNC, | |
5155 | stub_entry->branch_type, | |
5156 | (struct elf_link_hash_entry *) stub_entry->h, &unresolved_reloc, | |
5157 | &error_message); | |
5158 | } | |
906e58ca NC |
5159 | |
5160 | return TRUE; | |
48229727 | 5161 | #undef MAXRELOCS |
906e58ca NC |
5162 | } |
5163 | ||
48229727 JB |
5164 | /* Calculate the template, template size and instruction size for a stub. |
5165 | Return value is the instruction size. */ | |
906e58ca | 5166 | |
48229727 JB |
5167 | static unsigned int |
5168 | find_stub_size_and_template (enum elf32_arm_stub_type stub_type, | |
5169 | const insn_sequence **stub_template, | |
5170 | int *stub_template_size) | |
906e58ca | 5171 | { |
d3ce72d0 | 5172 | const insn_sequence *template_sequence = NULL; |
48229727 JB |
5173 | int template_size = 0, i; |
5174 | unsigned int size; | |
906e58ca | 5175 | |
d3ce72d0 | 5176 | template_sequence = stub_definitions[stub_type].template_sequence; |
2a229407 AM |
5177 | if (stub_template) |
5178 | *stub_template = template_sequence; | |
5179 | ||
48229727 | 5180 | template_size = stub_definitions[stub_type].template_size; |
2a229407 AM |
5181 | if (stub_template_size) |
5182 | *stub_template_size = template_size; | |
906e58ca NC |
5183 | |
5184 | size = 0; | |
461a49ca DJ |
5185 | for (i = 0; i < template_size; i++) |
5186 | { | |
d3ce72d0 | 5187 | switch (template_sequence[i].type) |
461a49ca DJ |
5188 | { |
5189 | case THUMB16_TYPE: | |
5190 | size += 2; | |
5191 | break; | |
5192 | ||
5193 | case ARM_TYPE: | |
48229727 | 5194 | case THUMB32_TYPE: |
461a49ca DJ |
5195 | case DATA_TYPE: |
5196 | size += 4; | |
5197 | break; | |
5198 | ||
5199 | default: | |
5200 | BFD_FAIL (); | |
2a229407 | 5201 | return 0; |
461a49ca DJ |
5202 | } |
5203 | } | |
5204 | ||
48229727 JB |
5205 | return size; |
5206 | } | |
5207 | ||
5208 | /* As above, but don't actually build the stub. Just bump offset so | |
5209 | we know stub section sizes. */ | |
5210 | ||
5211 | static bfd_boolean | |
5212 | arm_size_one_stub (struct bfd_hash_entry *gen_entry, | |
c7e2358a | 5213 | void *in_arg ATTRIBUTE_UNUSED) |
48229727 JB |
5214 | { |
5215 | struct elf32_arm_stub_hash_entry *stub_entry; | |
d3ce72d0 | 5216 | const insn_sequence *template_sequence; |
48229727 JB |
5217 | int template_size, size; |
5218 | ||
5219 | /* Massage our args to the form they really have. */ | |
5220 | stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry; | |
48229727 JB |
5221 | |
5222 | BFD_ASSERT((stub_entry->stub_type > arm_stub_none) | |
5223 | && stub_entry->stub_type < ARRAY_SIZE(stub_definitions)); | |
5224 | ||
d3ce72d0 | 5225 | size = find_stub_size_and_template (stub_entry->stub_type, &template_sequence, |
48229727 JB |
5226 | &template_size); |
5227 | ||
0955507f TP |
5228 | /* Initialized to -1. Null size indicates an empty slot full of zeros. */ |
5229 | if (stub_entry->stub_template_size) | |
5230 | { | |
5231 | stub_entry->stub_size = size; | |
5232 | stub_entry->stub_template = template_sequence; | |
5233 | stub_entry->stub_template_size = template_size; | |
5234 | } | |
5235 | ||
5236 | /* Already accounted for. */ | |
5237 | if (stub_entry->stub_offset != (bfd_vma) -1) | |
5238 | return TRUE; | |
461a49ca | 5239 | |
906e58ca NC |
5240 | size = (size + 7) & ~7; |
5241 | stub_entry->stub_sec->size += size; | |
461a49ca | 5242 | |
906e58ca NC |
5243 | return TRUE; |
5244 | } | |
5245 | ||
5246 | /* External entry points for sizing and building linker stubs. */ | |
5247 | ||
5248 | /* Set up various things so that we can make a list of input sections | |
5249 | for each output section included in the link. Returns -1 on error, | |
5250 | 0 when no stubs will be needed, and 1 on success. */ | |
5251 | ||
5252 | int | |
5253 | elf32_arm_setup_section_lists (bfd *output_bfd, | |
5254 | struct bfd_link_info *info) | |
5255 | { | |
5256 | bfd *input_bfd; | |
5257 | unsigned int bfd_count; | |
7292b3ac | 5258 | unsigned int top_id, top_index; |
906e58ca NC |
5259 | asection *section; |
5260 | asection **input_list, **list; | |
5261 | bfd_size_type amt; | |
5262 | struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info); | |
5263 | ||
4dfe6ac6 NC |
5264 | if (htab == NULL) |
5265 | return 0; | |
906e58ca NC |
5266 | if (! is_elf_hash_table (htab)) |
5267 | return 0; | |
5268 | ||
5269 | /* Count the number of input BFDs and find the top input section id. */ | |
5270 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; | |
5271 | input_bfd != NULL; | |
c72f2fb2 | 5272 | input_bfd = input_bfd->link.next) |
906e58ca NC |
5273 | { |
5274 | bfd_count += 1; | |
5275 | for (section = input_bfd->sections; | |
5276 | section != NULL; | |
5277 | section = section->next) | |
5278 | { | |
5279 | if (top_id < section->id) | |
5280 | top_id = section->id; | |
5281 | } | |
5282 | } | |
5283 | htab->bfd_count = bfd_count; | |
5284 | ||
5285 | amt = sizeof (struct map_stub) * (top_id + 1); | |
21d799b5 | 5286 | htab->stub_group = (struct map_stub *) bfd_zmalloc (amt); |
906e58ca NC |
5287 | if (htab->stub_group == NULL) |
5288 | return -1; | |
fe33d2fa | 5289 | htab->top_id = top_id; |
906e58ca NC |
5290 | |
5291 | /* We can't use output_bfd->section_count here to find the top output | |
5292 | section index as some sections may have been removed, and | |
5293 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
5294 | for (section = output_bfd->sections, top_index = 0; | |
5295 | section != NULL; | |
5296 | section = section->next) | |
5297 | { | |
5298 | if (top_index < section->index) | |
5299 | top_index = section->index; | |
5300 | } | |
5301 | ||
5302 | htab->top_index = top_index; | |
5303 | amt = sizeof (asection *) * (top_index + 1); | |
21d799b5 | 5304 | input_list = (asection **) bfd_malloc (amt); |
906e58ca NC |
5305 | htab->input_list = input_list; |
5306 | if (input_list == NULL) | |
5307 | return -1; | |
5308 | ||
5309 | /* For sections we aren't interested in, mark their entries with a | |
5310 | value we can check later. */ | |
5311 | list = input_list + top_index; | |
5312 | do | |
5313 | *list = bfd_abs_section_ptr; | |
5314 | while (list-- != input_list); | |
5315 | ||
5316 | for (section = output_bfd->sections; | |
5317 | section != NULL; | |
5318 | section = section->next) | |
5319 | { | |
5320 | if ((section->flags & SEC_CODE) != 0) | |
5321 | input_list[section->index] = NULL; | |
5322 | } | |
5323 | ||
5324 | return 1; | |
5325 | } | |
5326 | ||
5327 | /* The linker repeatedly calls this function for each input section, | |
5328 | in the order that input sections are linked into output sections. | |
5329 | Build lists of input sections to determine groupings between which | |
5330 | we may insert linker stubs. */ | |
5331 | ||
5332 | void | |
5333 | elf32_arm_next_input_section (struct bfd_link_info *info, | |
5334 | asection *isec) | |
5335 | { | |
5336 | struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info); | |
5337 | ||
4dfe6ac6 NC |
5338 | if (htab == NULL) |
5339 | return; | |
5340 | ||
906e58ca NC |
5341 | if (isec->output_section->index <= htab->top_index) |
5342 | { | |
5343 | asection **list = htab->input_list + isec->output_section->index; | |
5344 | ||
a7470592 | 5345 | if (*list != bfd_abs_section_ptr && (isec->flags & SEC_CODE) != 0) |
906e58ca NC |
5346 | { |
5347 | /* Steal the link_sec pointer for our list. */ | |
5348 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) | |
5349 | /* This happens to make the list in reverse order, | |
07d72278 | 5350 | which we reverse later. */ |
906e58ca NC |
5351 | PREV_SEC (isec) = *list; |
5352 | *list = isec; | |
5353 | } | |
5354 | } | |
5355 | } | |
5356 | ||
5357 | /* See whether we can group stub sections together. Grouping stub | |
5358 | sections may result in fewer stubs. More importantly, we need to | |
07d72278 | 5359 | put all .init* and .fini* stubs at the end of the .init or |
906e58ca NC |
5360 | .fini output sections respectively, because glibc splits the |
5361 | _init and _fini functions into multiple parts. Putting a stub in | |
5362 | the middle of a function is not a good idea. */ | |
5363 | ||
5364 | static void | |
5365 | group_sections (struct elf32_arm_link_hash_table *htab, | |
5366 | bfd_size_type stub_group_size, | |
07d72278 | 5367 | bfd_boolean stubs_always_after_branch) |
906e58ca | 5368 | { |
07d72278 | 5369 | asection **list = htab->input_list; |
906e58ca NC |
5370 | |
5371 | do | |
5372 | { | |
5373 | asection *tail = *list; | |
07d72278 | 5374 | asection *head; |
906e58ca NC |
5375 | |
5376 | if (tail == bfd_abs_section_ptr) | |
5377 | continue; | |
5378 | ||
07d72278 DJ |
5379 | /* Reverse the list: we must avoid placing stubs at the |
5380 | beginning of the section because the beginning of the text | |
5381 | section may be required for an interrupt vector in bare metal | |
5382 | code. */ | |
5383 | #define NEXT_SEC PREV_SEC | |
e780aef2 CL |
5384 | head = NULL; |
5385 | while (tail != NULL) | |
99059e56 RM |
5386 | { |
5387 | /* Pop from tail. */ | |
5388 | asection *item = tail; | |
5389 | tail = PREV_SEC (item); | |
e780aef2 | 5390 | |
99059e56 RM |
5391 | /* Push on head. */ |
5392 | NEXT_SEC (item) = head; | |
5393 | head = item; | |
5394 | } | |
07d72278 DJ |
5395 | |
5396 | while (head != NULL) | |
906e58ca NC |
5397 | { |
5398 | asection *curr; | |
07d72278 | 5399 | asection *next; |
e780aef2 CL |
5400 | bfd_vma stub_group_start = head->output_offset; |
5401 | bfd_vma end_of_next; | |
906e58ca | 5402 | |
07d72278 | 5403 | curr = head; |
e780aef2 | 5404 | while (NEXT_SEC (curr) != NULL) |
8cd931b7 | 5405 | { |
e780aef2 CL |
5406 | next = NEXT_SEC (curr); |
5407 | end_of_next = next->output_offset + next->size; | |
5408 | if (end_of_next - stub_group_start >= stub_group_size) | |
5409 | /* End of NEXT is too far from start, so stop. */ | |
8cd931b7 | 5410 | break; |
e780aef2 CL |
5411 | /* Add NEXT to the group. */ |
5412 | curr = next; | |
8cd931b7 | 5413 | } |
906e58ca | 5414 | |
07d72278 | 5415 | /* OK, the size from the start to the start of CURR is less |
906e58ca | 5416 | than stub_group_size and thus can be handled by one stub |
07d72278 | 5417 | section. (Or the head section is itself larger than |
906e58ca NC |
5418 | stub_group_size, in which case we may be toast.) |
5419 | We should really be keeping track of the total size of | |
5420 | stubs added here, as stubs contribute to the final output | |
7fb9f789 | 5421 | section size. */ |
906e58ca NC |
5422 | do |
5423 | { | |
07d72278 | 5424 | next = NEXT_SEC (head); |
906e58ca | 5425 | /* Set up this stub group. */ |
07d72278 | 5426 | htab->stub_group[head->id].link_sec = curr; |
906e58ca | 5427 | } |
07d72278 | 5428 | while (head != curr && (head = next) != NULL); |
906e58ca NC |
5429 | |
5430 | /* But wait, there's more! Input sections up to stub_group_size | |
07d72278 DJ |
5431 | bytes after the stub section can be handled by it too. */ |
5432 | if (!stubs_always_after_branch) | |
906e58ca | 5433 | { |
e780aef2 CL |
5434 | stub_group_start = curr->output_offset + curr->size; |
5435 | ||
8cd931b7 | 5436 | while (next != NULL) |
906e58ca | 5437 | { |
e780aef2 CL |
5438 | end_of_next = next->output_offset + next->size; |
5439 | if (end_of_next - stub_group_start >= stub_group_size) | |
5440 | /* End of NEXT is too far from stubs, so stop. */ | |
8cd931b7 | 5441 | break; |
e780aef2 | 5442 | /* Add NEXT to the stub group. */ |
07d72278 DJ |
5443 | head = next; |
5444 | next = NEXT_SEC (head); | |
5445 | htab->stub_group[head->id].link_sec = curr; | |
906e58ca NC |
5446 | } |
5447 | } | |
07d72278 | 5448 | head = next; |
906e58ca NC |
5449 | } |
5450 | } | |
07d72278 | 5451 | while (list++ != htab->input_list + htab->top_index); |
906e58ca NC |
5452 | |
5453 | free (htab->input_list); | |
5454 | #undef PREV_SEC | |
07d72278 | 5455 | #undef NEXT_SEC |
906e58ca NC |
5456 | } |
5457 | ||
48229727 JB |
5458 | /* Comparison function for sorting/searching relocations relating to Cortex-A8 |
5459 | erratum fix. */ | |
5460 | ||
5461 | static int | |
5462 | a8_reloc_compare (const void *a, const void *b) | |
5463 | { | |
21d799b5 NC |
5464 | const struct a8_erratum_reloc *ra = (const struct a8_erratum_reloc *) a; |
5465 | const struct a8_erratum_reloc *rb = (const struct a8_erratum_reloc *) b; | |
48229727 JB |
5466 | |
5467 | if (ra->from < rb->from) | |
5468 | return -1; | |
5469 | else if (ra->from > rb->from) | |
5470 | return 1; | |
5471 | else | |
5472 | return 0; | |
5473 | } | |
5474 | ||
5475 | static struct elf_link_hash_entry *find_thumb_glue (struct bfd_link_info *, | |
5476 | const char *, char **); | |
5477 | ||
5478 | /* Helper function to scan code for sequences which might trigger the Cortex-A8 | |
5479 | branch/TLB erratum. Fill in the table described by A8_FIXES_P, | |
81694485 | 5480 | NUM_A8_FIXES_P, A8_FIX_TABLE_SIZE_P. Returns true if an error occurs, false |
48229727 JB |
5481 | otherwise. */ |
5482 | ||
81694485 NC |
5483 | static bfd_boolean |
5484 | cortex_a8_erratum_scan (bfd *input_bfd, | |
5485 | struct bfd_link_info *info, | |
48229727 JB |
5486 | struct a8_erratum_fix **a8_fixes_p, |
5487 | unsigned int *num_a8_fixes_p, | |
5488 | unsigned int *a8_fix_table_size_p, | |
5489 | struct a8_erratum_reloc *a8_relocs, | |
eb7c4339 NS |
5490 | unsigned int num_a8_relocs, |
5491 | unsigned prev_num_a8_fixes, | |
5492 | bfd_boolean *stub_changed_p) | |
48229727 JB |
5493 | { |
5494 | asection *section; | |
5495 | struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info); | |
5496 | struct a8_erratum_fix *a8_fixes = *a8_fixes_p; | |
5497 | unsigned int num_a8_fixes = *num_a8_fixes_p; | |
5498 | unsigned int a8_fix_table_size = *a8_fix_table_size_p; | |
5499 | ||
4dfe6ac6 NC |
5500 | if (htab == NULL) |
5501 | return FALSE; | |
5502 | ||
48229727 JB |
5503 | for (section = input_bfd->sections; |
5504 | section != NULL; | |
5505 | section = section->next) | |
5506 | { | |
5507 | bfd_byte *contents = NULL; | |
5508 | struct _arm_elf_section_data *sec_data; | |
5509 | unsigned int span; | |
5510 | bfd_vma base_vma; | |
5511 | ||
5512 | if (elf_section_type (section) != SHT_PROGBITS | |
99059e56 RM |
5513 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 |
5514 | || (section->flags & SEC_EXCLUDE) != 0 | |
5515 | || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) | |
5516 | || (section->output_section == bfd_abs_section_ptr)) | |
5517 | continue; | |
48229727 JB |
5518 | |
5519 | base_vma = section->output_section->vma + section->output_offset; | |
5520 | ||
5521 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
99059e56 | 5522 | contents = elf_section_data (section)->this_hdr.contents; |
48229727 | 5523 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) |
99059e56 | 5524 | return TRUE; |
48229727 JB |
5525 | |
5526 | sec_data = elf32_arm_section_data (section); | |
5527 | ||
5528 | for (span = 0; span < sec_data->mapcount; span++) | |
99059e56 RM |
5529 | { |
5530 | unsigned int span_start = sec_data->map[span].vma; | |
5531 | unsigned int span_end = (span == sec_data->mapcount - 1) | |
5532 | ? section->size : sec_data->map[span + 1].vma; | |
5533 | unsigned int i; | |
5534 | char span_type = sec_data->map[span].type; | |
5535 | bfd_boolean last_was_32bit = FALSE, last_was_branch = FALSE; | |
5536 | ||
5537 | if (span_type != 't') | |
5538 | continue; | |
5539 | ||
5540 | /* Span is entirely within a single 4KB region: skip scanning. */ | |
5541 | if (((base_vma + span_start) & ~0xfff) | |
48229727 | 5542 | == ((base_vma + span_end) & ~0xfff)) |
99059e56 RM |
5543 | continue; |
5544 | ||
5545 | /* Scan for 32-bit Thumb-2 branches which span two 4K regions, where: | |
5546 | ||
5547 | * The opcode is BLX.W, BL.W, B.W, Bcc.W | |
5548 | * The branch target is in the same 4KB region as the | |
5549 | first half of the branch. | |
5550 | * The instruction before the branch is a 32-bit | |
5551 | length non-branch instruction. */ | |
5552 | for (i = span_start; i < span_end;) | |
5553 | { | |
5554 | unsigned int insn = bfd_getl16 (&contents[i]); | |
5555 | bfd_boolean insn_32bit = FALSE, is_blx = FALSE, is_b = FALSE; | |
48229727 JB |
5556 | bfd_boolean is_bl = FALSE, is_bcc = FALSE, is_32bit_branch; |
5557 | ||
99059e56 RM |
5558 | if ((insn & 0xe000) == 0xe000 && (insn & 0x1800) != 0x0000) |
5559 | insn_32bit = TRUE; | |
48229727 JB |
5560 | |
5561 | if (insn_32bit) | |
99059e56 RM |
5562 | { |
5563 | /* Load the rest of the insn (in manual-friendly order). */ | |
5564 | insn = (insn << 16) | bfd_getl16 (&contents[i + 2]); | |
5565 | ||
5566 | /* Encoding T4: B<c>.W. */ | |
5567 | is_b = (insn & 0xf800d000) == 0xf0009000; | |
5568 | /* Encoding T1: BL<c>.W. */ | |
5569 | is_bl = (insn & 0xf800d000) == 0xf000d000; | |
5570 | /* Encoding T2: BLX<c>.W. */ | |
5571 | is_blx = (insn & 0xf800d000) == 0xf000c000; | |
48229727 JB |
5572 | /* Encoding T3: B<c>.W (not permitted in IT block). */ |
5573 | is_bcc = (insn & 0xf800d000) == 0xf0008000 | |
5574 | && (insn & 0x07f00000) != 0x03800000; | |
5575 | } | |
5576 | ||
5577 | is_32bit_branch = is_b || is_bl || is_blx || is_bcc; | |
fe33d2fa | 5578 | |
99059e56 | 5579 | if (((base_vma + i) & 0xfff) == 0xffe |
81694485 NC |
5580 | && insn_32bit |
5581 | && is_32bit_branch | |
5582 | && last_was_32bit | |
5583 | && ! last_was_branch) | |
99059e56 RM |
5584 | { |
5585 | bfd_signed_vma offset = 0; | |
5586 | bfd_boolean force_target_arm = FALSE; | |
48229727 | 5587 | bfd_boolean force_target_thumb = FALSE; |
99059e56 RM |
5588 | bfd_vma target; |
5589 | enum elf32_arm_stub_type stub_type = arm_stub_none; | |
5590 | struct a8_erratum_reloc key, *found; | |
5591 | bfd_boolean use_plt = FALSE; | |
48229727 | 5592 | |
99059e56 RM |
5593 | key.from = base_vma + i; |
5594 | found = (struct a8_erratum_reloc *) | |
5595 | bsearch (&key, a8_relocs, num_a8_relocs, | |
5596 | sizeof (struct a8_erratum_reloc), | |
5597 | &a8_reloc_compare); | |
48229727 JB |
5598 | |
5599 | if (found) | |
5600 | { | |
5601 | char *error_message = NULL; | |
5602 | struct elf_link_hash_entry *entry; | |
5603 | ||
5604 | /* We don't care about the error returned from this | |
99059e56 | 5605 | function, only if there is glue or not. */ |
48229727 JB |
5606 | entry = find_thumb_glue (info, found->sym_name, |
5607 | &error_message); | |
5608 | ||
5609 | if (entry) | |
5610 | found->non_a8_stub = TRUE; | |
5611 | ||
92750f34 | 5612 | /* Keep a simpler condition, for the sake of clarity. */ |
362d30a1 | 5613 | if (htab->root.splt != NULL && found->hash != NULL |
92750f34 DJ |
5614 | && found->hash->root.plt.offset != (bfd_vma) -1) |
5615 | use_plt = TRUE; | |
5616 | ||
5617 | if (found->r_type == R_ARM_THM_CALL) | |
5618 | { | |
35fc36a8 RS |
5619 | if (found->branch_type == ST_BRANCH_TO_ARM |
5620 | || use_plt) | |
92750f34 DJ |
5621 | force_target_arm = TRUE; |
5622 | else | |
5623 | force_target_thumb = TRUE; | |
5624 | } | |
48229727 JB |
5625 | } |
5626 | ||
99059e56 | 5627 | /* Check if we have an offending branch instruction. */ |
48229727 JB |
5628 | |
5629 | if (found && found->non_a8_stub) | |
5630 | /* We've already made a stub for this instruction, e.g. | |
5631 | it's a long branch or a Thumb->ARM stub. Assume that | |
5632 | stub will suffice to work around the A8 erratum (see | |
5633 | setting of always_after_branch above). */ | |
5634 | ; | |
99059e56 RM |
5635 | else if (is_bcc) |
5636 | { | |
5637 | offset = (insn & 0x7ff) << 1; | |
5638 | offset |= (insn & 0x3f0000) >> 4; | |
5639 | offset |= (insn & 0x2000) ? 0x40000 : 0; | |
5640 | offset |= (insn & 0x800) ? 0x80000 : 0; | |
5641 | offset |= (insn & 0x4000000) ? 0x100000 : 0; | |
5642 | if (offset & 0x100000) | |
5643 | offset |= ~ ((bfd_signed_vma) 0xfffff); | |
5644 | stub_type = arm_stub_a8_veneer_b_cond; | |
5645 | } | |
5646 | else if (is_b || is_bl || is_blx) | |
5647 | { | |
5648 | int s = (insn & 0x4000000) != 0; | |
5649 | int j1 = (insn & 0x2000) != 0; | |
5650 | int j2 = (insn & 0x800) != 0; | |
5651 | int i1 = !(j1 ^ s); | |
5652 | int i2 = !(j2 ^ s); | |
5653 | ||
5654 | offset = (insn & 0x7ff) << 1; | |
5655 | offset |= (insn & 0x3ff0000) >> 4; | |
5656 | offset |= i2 << 22; | |
5657 | offset |= i1 << 23; | |
5658 | offset |= s << 24; | |
5659 | if (offset & 0x1000000) | |
5660 | offset |= ~ ((bfd_signed_vma) 0xffffff); | |
5661 | ||
5662 | if (is_blx) | |
5663 | offset &= ~ ((bfd_signed_vma) 3); | |
5664 | ||
5665 | stub_type = is_blx ? arm_stub_a8_veneer_blx : | |
5666 | is_bl ? arm_stub_a8_veneer_bl : arm_stub_a8_veneer_b; | |
5667 | } | |
5668 | ||
5669 | if (stub_type != arm_stub_none) | |
5670 | { | |
5671 | bfd_vma pc_for_insn = base_vma + i + 4; | |
48229727 JB |
5672 | |
5673 | /* The original instruction is a BL, but the target is | |
99059e56 | 5674 | an ARM instruction. If we were not making a stub, |
48229727 JB |
5675 | the BL would have been converted to a BLX. Use the |
5676 | BLX stub instead in that case. */ | |
5677 | if (htab->use_blx && force_target_arm | |
5678 | && stub_type == arm_stub_a8_veneer_bl) | |
5679 | { | |
5680 | stub_type = arm_stub_a8_veneer_blx; | |
5681 | is_blx = TRUE; | |
5682 | is_bl = FALSE; | |
5683 | } | |
5684 | /* Conversely, if the original instruction was | |
5685 | BLX but the target is Thumb mode, use the BL | |
5686 | stub. */ | |
5687 | else if (force_target_thumb | |
5688 | && stub_type == arm_stub_a8_veneer_blx) | |
5689 | { | |
5690 | stub_type = arm_stub_a8_veneer_bl; | |
5691 | is_blx = FALSE; | |
5692 | is_bl = TRUE; | |
5693 | } | |
5694 | ||
99059e56 RM |
5695 | if (is_blx) |
5696 | pc_for_insn &= ~ ((bfd_vma) 3); | |
48229727 | 5697 | |
99059e56 RM |
5698 | /* If we found a relocation, use the proper destination, |
5699 | not the offset in the (unrelocated) instruction. | |
48229727 JB |
5700 | Note this is always done if we switched the stub type |
5701 | above. */ | |
99059e56 RM |
5702 | if (found) |
5703 | offset = | |
81694485 | 5704 | (bfd_signed_vma) (found->destination - pc_for_insn); |
48229727 | 5705 | |
99059e56 RM |
5706 | /* If the stub will use a Thumb-mode branch to a |
5707 | PLT target, redirect it to the preceding Thumb | |
5708 | entry point. */ | |
5709 | if (stub_type != arm_stub_a8_veneer_blx && use_plt) | |
5710 | offset -= PLT_THUMB_STUB_SIZE; | |
7d24e6a6 | 5711 | |
99059e56 | 5712 | target = pc_for_insn + offset; |
48229727 | 5713 | |
99059e56 RM |
5714 | /* The BLX stub is ARM-mode code. Adjust the offset to |
5715 | take the different PC value (+8 instead of +4) into | |
48229727 | 5716 | account. */ |
99059e56 RM |
5717 | if (stub_type == arm_stub_a8_veneer_blx) |
5718 | offset += 4; | |
5719 | ||
5720 | if (((base_vma + i) & ~0xfff) == (target & ~0xfff)) | |
5721 | { | |
5722 | char *stub_name = NULL; | |
5723 | ||
5724 | if (num_a8_fixes == a8_fix_table_size) | |
5725 | { | |
5726 | a8_fix_table_size *= 2; | |
5727 | a8_fixes = (struct a8_erratum_fix *) | |
5728 | bfd_realloc (a8_fixes, | |
5729 | sizeof (struct a8_erratum_fix) | |
5730 | * a8_fix_table_size); | |
5731 | } | |
48229727 | 5732 | |
eb7c4339 NS |
5733 | if (num_a8_fixes < prev_num_a8_fixes) |
5734 | { | |
5735 | /* If we're doing a subsequent scan, | |
5736 | check if we've found the same fix as | |
5737 | before, and try and reuse the stub | |
5738 | name. */ | |
5739 | stub_name = a8_fixes[num_a8_fixes].stub_name; | |
5740 | if ((a8_fixes[num_a8_fixes].section != section) | |
5741 | || (a8_fixes[num_a8_fixes].offset != i)) | |
5742 | { | |
5743 | free (stub_name); | |
5744 | stub_name = NULL; | |
5745 | *stub_changed_p = TRUE; | |
5746 | } | |
5747 | } | |
5748 | ||
5749 | if (!stub_name) | |
5750 | { | |
21d799b5 | 5751 | stub_name = (char *) bfd_malloc (8 + 1 + 8 + 1); |
eb7c4339 NS |
5752 | if (stub_name != NULL) |
5753 | sprintf (stub_name, "%x:%x", section->id, i); | |
5754 | } | |
48229727 | 5755 | |
99059e56 RM |
5756 | a8_fixes[num_a8_fixes].input_bfd = input_bfd; |
5757 | a8_fixes[num_a8_fixes].section = section; | |
5758 | a8_fixes[num_a8_fixes].offset = i; | |
8d9d9490 TP |
5759 | a8_fixes[num_a8_fixes].target_offset = |
5760 | target - base_vma; | |
99059e56 RM |
5761 | a8_fixes[num_a8_fixes].orig_insn = insn; |
5762 | a8_fixes[num_a8_fixes].stub_name = stub_name; | |
5763 | a8_fixes[num_a8_fixes].stub_type = stub_type; | |
5764 | a8_fixes[num_a8_fixes].branch_type = | |
35fc36a8 | 5765 | is_blx ? ST_BRANCH_TO_ARM : ST_BRANCH_TO_THUMB; |
48229727 | 5766 | |
99059e56 RM |
5767 | num_a8_fixes++; |
5768 | } | |
5769 | } | |
5770 | } | |
48229727 | 5771 | |
99059e56 RM |
5772 | i += insn_32bit ? 4 : 2; |
5773 | last_was_32bit = insn_32bit; | |
48229727 | 5774 | last_was_branch = is_32bit_branch; |
99059e56 RM |
5775 | } |
5776 | } | |
48229727 JB |
5777 | |
5778 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
99059e56 | 5779 | free (contents); |
48229727 | 5780 | } |
fe33d2fa | 5781 | |
48229727 JB |
5782 | *a8_fixes_p = a8_fixes; |
5783 | *num_a8_fixes_p = num_a8_fixes; | |
5784 | *a8_fix_table_size_p = a8_fix_table_size; | |
fe33d2fa | 5785 | |
81694485 | 5786 | return FALSE; |
48229727 JB |
5787 | } |
5788 | ||
b715f643 TP |
5789 | /* Create or update a stub entry depending on whether the stub can already be |
5790 | found in HTAB. The stub is identified by: | |
5791 | - its type STUB_TYPE | |
5792 | - its source branch (note that several can share the same stub) whose | |
5793 | section and relocation (if any) are given by SECTION and IRELA | |
5794 | respectively | |
5795 | - its target symbol whose input section, hash, name, value and branch type | |
5796 | are given in SYM_SEC, HASH, SYM_NAME, SYM_VALUE and BRANCH_TYPE | |
5797 | respectively | |
5798 | ||
5799 | If found, the value of the stub's target symbol is updated from SYM_VALUE | |
5800 | and *NEW_STUB is set to FALSE. Otherwise, *NEW_STUB is set to | |
5801 | TRUE and the stub entry is initialized. | |
5802 | ||
0955507f TP |
5803 | Returns the stub that was created or updated, or NULL if an error |
5804 | occurred. */ | |
b715f643 | 5805 | |
0955507f | 5806 | static struct elf32_arm_stub_hash_entry * |
b715f643 TP |
5807 | elf32_arm_create_stub (struct elf32_arm_link_hash_table *htab, |
5808 | enum elf32_arm_stub_type stub_type, asection *section, | |
5809 | Elf_Internal_Rela *irela, asection *sym_sec, | |
5810 | struct elf32_arm_link_hash_entry *hash, char *sym_name, | |
5811 | bfd_vma sym_value, enum arm_st_branch_type branch_type, | |
5812 | bfd_boolean *new_stub) | |
5813 | { | |
5814 | const asection *id_sec; | |
5815 | char *stub_name; | |
5816 | struct elf32_arm_stub_hash_entry *stub_entry; | |
5817 | unsigned int r_type; | |
4f4faa4d | 5818 | bfd_boolean sym_claimed = arm_stub_sym_claimed (stub_type); |
b715f643 TP |
5819 | |
5820 | BFD_ASSERT (stub_type != arm_stub_none); | |
5821 | *new_stub = FALSE; | |
5822 | ||
4f4faa4d TP |
5823 | if (sym_claimed) |
5824 | stub_name = sym_name; | |
5825 | else | |
5826 | { | |
5827 | BFD_ASSERT (irela); | |
5828 | BFD_ASSERT (section); | |
c2abbbeb | 5829 | BFD_ASSERT (section->id <= htab->top_id); |
b715f643 | 5830 | |
4f4faa4d TP |
5831 | /* Support for grouping stub sections. */ |
5832 | id_sec = htab->stub_group[section->id].link_sec; | |
b715f643 | 5833 | |
4f4faa4d TP |
5834 | /* Get the name of this stub. */ |
5835 | stub_name = elf32_arm_stub_name (id_sec, sym_sec, hash, irela, | |
5836 | stub_type); | |
5837 | if (!stub_name) | |
0955507f | 5838 | return NULL; |
4f4faa4d | 5839 | } |
b715f643 TP |
5840 | |
5841 | stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, stub_name, FALSE, | |
5842 | FALSE); | |
5843 | /* The proper stub has already been created, just update its value. */ | |
5844 | if (stub_entry != NULL) | |
5845 | { | |
4f4faa4d TP |
5846 | if (!sym_claimed) |
5847 | free (stub_name); | |
b715f643 | 5848 | stub_entry->target_value = sym_value; |
0955507f | 5849 | return stub_entry; |
b715f643 TP |
5850 | } |
5851 | ||
daa4adae | 5852 | stub_entry = elf32_arm_add_stub (stub_name, section, htab, stub_type); |
b715f643 TP |
5853 | if (stub_entry == NULL) |
5854 | { | |
4f4faa4d TP |
5855 | if (!sym_claimed) |
5856 | free (stub_name); | |
0955507f | 5857 | return NULL; |
b715f643 TP |
5858 | } |
5859 | ||
5860 | stub_entry->target_value = sym_value; | |
5861 | stub_entry->target_section = sym_sec; | |
5862 | stub_entry->stub_type = stub_type; | |
5863 | stub_entry->h = hash; | |
5864 | stub_entry->branch_type = branch_type; | |
5865 | ||
4f4faa4d TP |
5866 | if (sym_claimed) |
5867 | stub_entry->output_name = sym_name; | |
5868 | else | |
b715f643 | 5869 | { |
4f4faa4d TP |
5870 | if (sym_name == NULL) |
5871 | sym_name = "unnamed"; | |
5872 | stub_entry->output_name = (char *) | |
5873 | bfd_alloc (htab->stub_bfd, sizeof (THUMB2ARM_GLUE_ENTRY_NAME) | |
5874 | + strlen (sym_name)); | |
5875 | if (stub_entry->output_name == NULL) | |
5876 | { | |
5877 | free (stub_name); | |
0955507f | 5878 | return NULL; |
4f4faa4d | 5879 | } |
b715f643 | 5880 | |
4f4faa4d TP |
5881 | /* For historical reasons, use the existing names for ARM-to-Thumb and |
5882 | Thumb-to-ARM stubs. */ | |
5883 | r_type = ELF32_R_TYPE (irela->r_info); | |
5884 | if ((r_type == (unsigned int) R_ARM_THM_CALL | |
5885 | || r_type == (unsigned int) R_ARM_THM_JUMP24 | |
5886 | || r_type == (unsigned int) R_ARM_THM_JUMP19) | |
5887 | && branch_type == ST_BRANCH_TO_ARM) | |
5888 | sprintf (stub_entry->output_name, THUMB2ARM_GLUE_ENTRY_NAME, sym_name); | |
5889 | else if ((r_type == (unsigned int) R_ARM_CALL | |
5890 | || r_type == (unsigned int) R_ARM_JUMP24) | |
5891 | && branch_type == ST_BRANCH_TO_THUMB) | |
5892 | sprintf (stub_entry->output_name, ARM2THUMB_GLUE_ENTRY_NAME, sym_name); | |
5893 | else | |
5894 | sprintf (stub_entry->output_name, STUB_ENTRY_NAME, sym_name); | |
5895 | } | |
b715f643 TP |
5896 | |
5897 | *new_stub = TRUE; | |
0955507f | 5898 | return stub_entry; |
b715f643 TP |
5899 | } |
5900 | ||
4ba2ef8f TP |
5901 | /* Scan symbols in INPUT_BFD to identify secure entry functions needing a |
5902 | gateway veneer to transition from non secure to secure state and create them | |
5903 | accordingly. | |
5904 | ||
5905 | "ARMv8-M Security Extensions: Requirements on Development Tools" document | |
5906 | defines the conditions that govern Secure Gateway veneer creation for a | |
5907 | given symbol <SYM> as follows: | |
5908 | - it has function type | |
5909 | - it has non local binding | |
5910 | - a symbol named __acle_se_<SYM> (called special symbol) exists with the | |
5911 | same type, binding and value as <SYM> (called normal symbol). | |
5912 | An entry function can handle secure state transition itself in which case | |
5913 | its special symbol would have a different value from the normal symbol. | |
5914 | ||
5915 | OUT_ATTR gives the output attributes, SYM_HASHES the symbol index to hash | |
5916 | entry mapping while HTAB gives the name to hash entry mapping. | |
0955507f TP |
5917 | *CMSE_STUB_CREATED is increased by the number of secure gateway veneer |
5918 | created. | |
4ba2ef8f | 5919 | |
0955507f | 5920 | The return value gives whether a stub failed to be allocated. */ |
4ba2ef8f TP |
5921 | |
5922 | static bfd_boolean | |
5923 | cmse_scan (bfd *input_bfd, struct elf32_arm_link_hash_table *htab, | |
5924 | obj_attribute *out_attr, struct elf_link_hash_entry **sym_hashes, | |
0955507f | 5925 | int *cmse_stub_created) |
4ba2ef8f TP |
5926 | { |
5927 | const struct elf_backend_data *bed; | |
5928 | Elf_Internal_Shdr *symtab_hdr; | |
5929 | unsigned i, j, sym_count, ext_start; | |
5930 | Elf_Internal_Sym *cmse_sym, *local_syms; | |
5931 | struct elf32_arm_link_hash_entry *hash, *cmse_hash = NULL; | |
5932 | enum arm_st_branch_type branch_type; | |
5933 | char *sym_name, *lsym_name; | |
5934 | bfd_vma sym_value; | |
5935 | asection *section; | |
0955507f TP |
5936 | struct elf32_arm_stub_hash_entry *stub_entry; |
5937 | bfd_boolean is_v8m, new_stub, cmse_invalid, ret = TRUE; | |
4ba2ef8f TP |
5938 | |
5939 | bed = get_elf_backend_data (input_bfd); | |
5940 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
5941 | sym_count = symtab_hdr->sh_size / bed->s->sizeof_sym; | |
5942 | ext_start = symtab_hdr->sh_info; | |
5943 | is_v8m = (out_attr[Tag_CPU_arch].i >= TAG_CPU_ARCH_V8M_BASE | |
5944 | && out_attr[Tag_CPU_arch_profile].i == 'M'); | |
5945 | ||
5946 | local_syms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5947 | if (local_syms == NULL) | |
5948 | local_syms = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
5949 | symtab_hdr->sh_info, 0, NULL, NULL, | |
5950 | NULL); | |
5951 | if (symtab_hdr->sh_info && local_syms == NULL) | |
5952 | return FALSE; | |
5953 | ||
5954 | /* Scan symbols. */ | |
5955 | for (i = 0; i < sym_count; i++) | |
5956 | { | |
5957 | cmse_invalid = FALSE; | |
5958 | ||
5959 | if (i < ext_start) | |
5960 | { | |
5961 | cmse_sym = &local_syms[i]; | |
5962 | /* Not a special symbol. */ | |
5963 | if (!ARM_GET_SYM_CMSE_SPCL (cmse_sym->st_target_internal)) | |
5964 | continue; | |
5965 | sym_name = bfd_elf_string_from_elf_section (input_bfd, | |
5966 | symtab_hdr->sh_link, | |
5967 | cmse_sym->st_name); | |
5968 | /* Special symbol with local binding. */ | |
5969 | cmse_invalid = TRUE; | |
5970 | } | |
5971 | else | |
5972 | { | |
5973 | cmse_hash = elf32_arm_hash_entry (sym_hashes[i - ext_start]); | |
5974 | sym_name = (char *) cmse_hash->root.root.root.string; | |
5975 | ||
5976 | /* Not a special symbol. */ | |
5977 | if (!ARM_GET_SYM_CMSE_SPCL (cmse_hash->root.target_internal)) | |
5978 | continue; | |
5979 | ||
5980 | /* Special symbol has incorrect binding or type. */ | |
5981 | if ((cmse_hash->root.root.type != bfd_link_hash_defined | |
5982 | && cmse_hash->root.root.type != bfd_link_hash_defweak) | |
5983 | || cmse_hash->root.type != STT_FUNC) | |
5984 | cmse_invalid = TRUE; | |
5985 | } | |
5986 | ||
5987 | if (!is_v8m) | |
5988 | { | |
90b6238f AM |
5989 | _bfd_error_handler (_("%pB: special symbol `%s' only allowed for " |
5990 | "ARMv8-M architecture or later"), | |
4eca0228 | 5991 | input_bfd, sym_name); |
4ba2ef8f TP |
5992 | is_v8m = TRUE; /* Avoid multiple warning. */ |
5993 | ret = FALSE; | |
5994 | } | |
5995 | ||
5996 | if (cmse_invalid) | |
5997 | { | |
90b6238f AM |
5998 | _bfd_error_handler (_("%pB: invalid special symbol `%s'; it must be" |
5999 | " a global or weak function symbol"), | |
4eca0228 | 6000 | input_bfd, sym_name); |
4ba2ef8f TP |
6001 | ret = FALSE; |
6002 | if (i < ext_start) | |
6003 | continue; | |
6004 | } | |
6005 | ||
6006 | sym_name += strlen (CMSE_PREFIX); | |
6007 | hash = (struct elf32_arm_link_hash_entry *) | |
6008 | elf_link_hash_lookup (&(htab)->root, sym_name, FALSE, FALSE, TRUE); | |
6009 | ||
6010 | /* No associated normal symbol or it is neither global nor weak. */ | |
6011 | if (!hash | |
6012 | || (hash->root.root.type != bfd_link_hash_defined | |
6013 | && hash->root.root.type != bfd_link_hash_defweak) | |
6014 | || hash->root.type != STT_FUNC) | |
6015 | { | |
6016 | /* Initialize here to avoid warning about use of possibly | |
6017 | uninitialized variable. */ | |
6018 | j = 0; | |
6019 | ||
6020 | if (!hash) | |
6021 | { | |
6022 | /* Searching for a normal symbol with local binding. */ | |
6023 | for (; j < ext_start; j++) | |
6024 | { | |
6025 | lsym_name = | |
6026 | bfd_elf_string_from_elf_section (input_bfd, | |
6027 | symtab_hdr->sh_link, | |
6028 | local_syms[j].st_name); | |
6029 | if (!strcmp (sym_name, lsym_name)) | |
6030 | break; | |
6031 | } | |
6032 | } | |
6033 | ||
6034 | if (hash || j < ext_start) | |
6035 | { | |
4eca0228 | 6036 | _bfd_error_handler |
90b6238f AM |
6037 | (_("%pB: invalid standard symbol `%s'; it must be " |
6038 | "a global or weak function symbol"), | |
6039 | input_bfd, sym_name); | |
4ba2ef8f TP |
6040 | } |
6041 | else | |
4eca0228 | 6042 | _bfd_error_handler |
90b6238f | 6043 | (_("%pB: absent standard symbol `%s'"), input_bfd, sym_name); |
4ba2ef8f TP |
6044 | ret = FALSE; |
6045 | if (!hash) | |
6046 | continue; | |
6047 | } | |
6048 | ||
6049 | sym_value = hash->root.root.u.def.value; | |
6050 | section = hash->root.root.u.def.section; | |
6051 | ||
6052 | if (cmse_hash->root.root.u.def.section != section) | |
6053 | { | |
4eca0228 | 6054 | _bfd_error_handler |
90b6238f | 6055 | (_("%pB: `%s' and its special symbol are in different sections"), |
4ba2ef8f TP |
6056 | input_bfd, sym_name); |
6057 | ret = FALSE; | |
6058 | } | |
6059 | if (cmse_hash->root.root.u.def.value != sym_value) | |
6060 | continue; /* Ignore: could be an entry function starting with SG. */ | |
6061 | ||
6062 | /* If this section is a link-once section that will be discarded, then | |
6063 | don't create any stubs. */ | |
6064 | if (section->output_section == NULL) | |
6065 | { | |
4eca0228 | 6066 | _bfd_error_handler |
90b6238f | 6067 | (_("%pB: entry function `%s' not output"), input_bfd, sym_name); |
4ba2ef8f TP |
6068 | continue; |
6069 | } | |
6070 | ||
6071 | if (hash->root.size == 0) | |
6072 | { | |
4eca0228 | 6073 | _bfd_error_handler |
90b6238f | 6074 | (_("%pB: entry function `%s' is empty"), input_bfd, sym_name); |
4ba2ef8f TP |
6075 | ret = FALSE; |
6076 | } | |
6077 | ||
6078 | if (!ret) | |
6079 | continue; | |
6080 | branch_type = ARM_GET_SYM_BRANCH_TYPE (hash->root.target_internal); | |
0955507f | 6081 | stub_entry |
4ba2ef8f TP |
6082 | = elf32_arm_create_stub (htab, arm_stub_cmse_branch_thumb_only, |
6083 | NULL, NULL, section, hash, sym_name, | |
6084 | sym_value, branch_type, &new_stub); | |
6085 | ||
0955507f | 6086 | if (stub_entry == NULL) |
4ba2ef8f TP |
6087 | ret = FALSE; |
6088 | else | |
6089 | { | |
6090 | BFD_ASSERT (new_stub); | |
0955507f | 6091 | (*cmse_stub_created)++; |
4ba2ef8f TP |
6092 | } |
6093 | } | |
6094 | ||
6095 | if (!symtab_hdr->contents) | |
6096 | free (local_syms); | |
6097 | return ret; | |
6098 | } | |
6099 | ||
0955507f TP |
6100 | /* Return TRUE iff a symbol identified by its linker HASH entry is a secure |
6101 | code entry function, ie can be called from non secure code without using a | |
6102 | veneer. */ | |
6103 | ||
6104 | static bfd_boolean | |
6105 | cmse_entry_fct_p (struct elf32_arm_link_hash_entry *hash) | |
6106 | { | |
42484486 | 6107 | bfd_byte contents[4]; |
0955507f TP |
6108 | uint32_t first_insn; |
6109 | asection *section; | |
6110 | file_ptr offset; | |
6111 | bfd *abfd; | |
6112 | ||
6113 | /* Defined symbol of function type. */ | |
6114 | if (hash->root.root.type != bfd_link_hash_defined | |
6115 | && hash->root.root.type != bfd_link_hash_defweak) | |
6116 | return FALSE; | |
6117 | if (hash->root.type != STT_FUNC) | |
6118 | return FALSE; | |
6119 | ||
6120 | /* Read first instruction. */ | |
6121 | section = hash->root.root.u.def.section; | |
6122 | abfd = section->owner; | |
6123 | offset = hash->root.root.u.def.value - section->vma; | |
42484486 TP |
6124 | if (!bfd_get_section_contents (abfd, section, contents, offset, |
6125 | sizeof (contents))) | |
0955507f TP |
6126 | return FALSE; |
6127 | ||
42484486 TP |
6128 | first_insn = bfd_get_32 (abfd, contents); |
6129 | ||
6130 | /* Starts by SG instruction. */ | |
0955507f TP |
6131 | return first_insn == 0xe97fe97f; |
6132 | } | |
6133 | ||
6134 | /* Output the name (in symbol table) of the veneer GEN_ENTRY if it is a new | |
6135 | secure gateway veneers (ie. the veneers was not in the input import library) | |
6136 | and there is no output import library (GEN_INFO->out_implib_bfd is NULL. */ | |
6137 | ||
6138 | static bfd_boolean | |
6139 | arm_list_new_cmse_stub (struct bfd_hash_entry *gen_entry, void *gen_info) | |
6140 | { | |
6141 | struct elf32_arm_stub_hash_entry *stub_entry; | |
6142 | struct bfd_link_info *info; | |
6143 | ||
6144 | /* Massage our args to the form they really have. */ | |
6145 | stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry; | |
6146 | info = (struct bfd_link_info *) gen_info; | |
6147 | ||
6148 | if (info->out_implib_bfd) | |
6149 | return TRUE; | |
6150 | ||
6151 | if (stub_entry->stub_type != arm_stub_cmse_branch_thumb_only) | |
6152 | return TRUE; | |
6153 | ||
6154 | if (stub_entry->stub_offset == (bfd_vma) -1) | |
4eca0228 | 6155 | _bfd_error_handler (" %s", stub_entry->output_name); |
0955507f TP |
6156 | |
6157 | return TRUE; | |
6158 | } | |
6159 | ||
6160 | /* Set offset of each secure gateway veneers so that its address remain | |
6161 | identical to the one in the input import library referred by | |
6162 | HTAB->in_implib_bfd. A warning is issued for veneers that disappeared | |
6163 | (present in input import library but absent from the executable being | |
6164 | linked) or if new veneers appeared and there is no output import library | |
6165 | (INFO->out_implib_bfd is NULL and *CMSE_STUB_CREATED is bigger than the | |
6166 | number of secure gateway veneers found in the input import library. | |
6167 | ||
6168 | The function returns whether an error occurred. If no error occurred, | |
6169 | *CMSE_STUB_CREATED gives the number of SG veneers created by both cmse_scan | |
6170 | and this function and HTAB->new_cmse_stub_offset is set to the biggest | |
6171 | veneer observed set for new veneers to be layed out after. */ | |
6172 | ||
6173 | static bfd_boolean | |
6174 | set_cmse_veneer_addr_from_implib (struct bfd_link_info *info, | |
6175 | struct elf32_arm_link_hash_table *htab, | |
6176 | int *cmse_stub_created) | |
6177 | { | |
6178 | long symsize; | |
6179 | char *sym_name; | |
6180 | flagword flags; | |
6181 | long i, symcount; | |
6182 | bfd *in_implib_bfd; | |
6183 | asection *stub_out_sec; | |
6184 | bfd_boolean ret = TRUE; | |
6185 | Elf_Internal_Sym *intsym; | |
6186 | const char *out_sec_name; | |
6187 | bfd_size_type cmse_stub_size; | |
6188 | asymbol **sympp = NULL, *sym; | |
6189 | struct elf32_arm_link_hash_entry *hash; | |
6190 | const insn_sequence *cmse_stub_template; | |
6191 | struct elf32_arm_stub_hash_entry *stub_entry; | |
6192 | int cmse_stub_template_size, new_cmse_stubs_created = *cmse_stub_created; | |
6193 | bfd_vma veneer_value, stub_offset, next_cmse_stub_offset; | |
6194 | bfd_vma cmse_stub_array_start = (bfd_vma) -1, cmse_stub_sec_vma = 0; | |
6195 | ||
6196 | /* No input secure gateway import library. */ | |
6197 | if (!htab->in_implib_bfd) | |
6198 | return TRUE; | |
6199 | ||
6200 | in_implib_bfd = htab->in_implib_bfd; | |
6201 | if (!htab->cmse_implib) | |
6202 | { | |
871b3ab2 | 6203 | _bfd_error_handler (_("%pB: --in-implib only supported for Secure " |
90b6238f | 6204 | "Gateway import libraries"), in_implib_bfd); |
0955507f TP |
6205 | return FALSE; |
6206 | } | |
6207 | ||
6208 | /* Get symbol table size. */ | |
6209 | symsize = bfd_get_symtab_upper_bound (in_implib_bfd); | |
6210 | if (symsize < 0) | |
6211 | return FALSE; | |
6212 | ||
6213 | /* Read in the input secure gateway import library's symbol table. */ | |
6214 | sympp = (asymbol **) xmalloc (symsize); | |
6215 | symcount = bfd_canonicalize_symtab (in_implib_bfd, sympp); | |
6216 | if (symcount < 0) | |
6217 | { | |
6218 | ret = FALSE; | |
6219 | goto free_sym_buf; | |
6220 | } | |
6221 | ||
6222 | htab->new_cmse_stub_offset = 0; | |
6223 | cmse_stub_size = | |
6224 | find_stub_size_and_template (arm_stub_cmse_branch_thumb_only, | |
6225 | &cmse_stub_template, | |
6226 | &cmse_stub_template_size); | |
6227 | out_sec_name = | |
6228 | arm_dedicated_stub_output_section_name (arm_stub_cmse_branch_thumb_only); | |
6229 | stub_out_sec = | |
6230 | bfd_get_section_by_name (htab->obfd, out_sec_name); | |
6231 | if (stub_out_sec != NULL) | |
6232 | cmse_stub_sec_vma = stub_out_sec->vma; | |
6233 | ||
6234 | /* Set addresses of veneers mentionned in input secure gateway import | |
6235 | library's symbol table. */ | |
6236 | for (i = 0; i < symcount; i++) | |
6237 | { | |
6238 | sym = sympp[i]; | |
6239 | flags = sym->flags; | |
6240 | sym_name = (char *) bfd_asymbol_name (sym); | |
6241 | intsym = &((elf_symbol_type *) sym)->internal_elf_sym; | |
6242 | ||
6243 | if (sym->section != bfd_abs_section_ptr | |
6244 | || !(flags & (BSF_GLOBAL | BSF_WEAK)) | |
6245 | || (flags & BSF_FUNCTION) != BSF_FUNCTION | |
6246 | || (ARM_GET_SYM_BRANCH_TYPE (intsym->st_target_internal) | |
6247 | != ST_BRANCH_TO_THUMB)) | |
6248 | { | |
90b6238f AM |
6249 | _bfd_error_handler (_("%pB: invalid import library entry: `%s'; " |
6250 | "symbol should be absolute, global and " | |
6251 | "refer to Thumb functions"), | |
4eca0228 | 6252 | in_implib_bfd, sym_name); |
0955507f TP |
6253 | ret = FALSE; |
6254 | continue; | |
6255 | } | |
6256 | ||
6257 | veneer_value = bfd_asymbol_value (sym); | |
6258 | stub_offset = veneer_value - cmse_stub_sec_vma; | |
6259 | stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, sym_name, | |
6260 | FALSE, FALSE); | |
6261 | hash = (struct elf32_arm_link_hash_entry *) | |
6262 | elf_link_hash_lookup (&(htab)->root, sym_name, FALSE, FALSE, TRUE); | |
6263 | ||
6264 | /* Stub entry should have been created by cmse_scan or the symbol be of | |
6265 | a secure function callable from non secure code. */ | |
6266 | if (!stub_entry && !hash) | |
6267 | { | |
6268 | bfd_boolean new_stub; | |
6269 | ||
4eca0228 | 6270 | _bfd_error_handler |
90b6238f | 6271 | (_("entry function `%s' disappeared from secure code"), sym_name); |
0955507f TP |
6272 | hash = (struct elf32_arm_link_hash_entry *) |
6273 | elf_link_hash_lookup (&(htab)->root, sym_name, TRUE, TRUE, TRUE); | |
6274 | stub_entry | |
6275 | = elf32_arm_create_stub (htab, arm_stub_cmse_branch_thumb_only, | |
6276 | NULL, NULL, bfd_abs_section_ptr, hash, | |
6277 | sym_name, veneer_value, | |
6278 | ST_BRANCH_TO_THUMB, &new_stub); | |
6279 | if (stub_entry == NULL) | |
6280 | ret = FALSE; | |
6281 | else | |
6282 | { | |
6283 | BFD_ASSERT (new_stub); | |
6284 | new_cmse_stubs_created++; | |
6285 | (*cmse_stub_created)++; | |
6286 | } | |
6287 | stub_entry->stub_template_size = stub_entry->stub_size = 0; | |
6288 | stub_entry->stub_offset = stub_offset; | |
6289 | } | |
6290 | /* Symbol found is not callable from non secure code. */ | |
6291 | else if (!stub_entry) | |
6292 | { | |
6293 | if (!cmse_entry_fct_p (hash)) | |
6294 | { | |
90b6238f | 6295 | _bfd_error_handler (_("`%s' refers to a non entry function"), |
4eca0228 | 6296 | sym_name); |
0955507f TP |
6297 | ret = FALSE; |
6298 | } | |
6299 | continue; | |
6300 | } | |
6301 | else | |
6302 | { | |
6303 | /* Only stubs for SG veneers should have been created. */ | |
6304 | BFD_ASSERT (stub_entry->stub_type == arm_stub_cmse_branch_thumb_only); | |
6305 | ||
6306 | /* Check visibility hasn't changed. */ | |
6307 | if (!!(flags & BSF_GLOBAL) | |
6308 | != (hash->root.root.type == bfd_link_hash_defined)) | |
4eca0228 | 6309 | _bfd_error_handler |
90b6238f | 6310 | (_("%pB: visibility of symbol `%s' has changed"), in_implib_bfd, |
0955507f TP |
6311 | sym_name); |
6312 | ||
6313 | stub_entry->stub_offset = stub_offset; | |
6314 | } | |
6315 | ||
6316 | /* Size should match that of a SG veneer. */ | |
6317 | if (intsym->st_size != cmse_stub_size) | |
6318 | { | |
90b6238f | 6319 | _bfd_error_handler (_("%pB: incorrect size for symbol `%s'"), |
4eca0228 | 6320 | in_implib_bfd, sym_name); |
0955507f TP |
6321 | ret = FALSE; |
6322 | } | |
6323 | ||
6324 | /* Previous veneer address is before current SG veneer section. */ | |
6325 | if (veneer_value < cmse_stub_sec_vma) | |
6326 | { | |
6327 | /* Avoid offset underflow. */ | |
6328 | if (stub_entry) | |
6329 | stub_entry->stub_offset = 0; | |
6330 | stub_offset = 0; | |
6331 | ret = FALSE; | |
6332 | } | |
6333 | ||
6334 | /* Complain if stub offset not a multiple of stub size. */ | |
6335 | if (stub_offset % cmse_stub_size) | |
6336 | { | |
4eca0228 | 6337 | _bfd_error_handler |
90b6238f AM |
6338 | (_("offset of veneer for entry function `%s' not a multiple of " |
6339 | "its size"), sym_name); | |
0955507f TP |
6340 | ret = FALSE; |
6341 | } | |
6342 | ||
6343 | if (!ret) | |
6344 | continue; | |
6345 | ||
6346 | new_cmse_stubs_created--; | |
6347 | if (veneer_value < cmse_stub_array_start) | |
6348 | cmse_stub_array_start = veneer_value; | |
6349 | next_cmse_stub_offset = stub_offset + ((cmse_stub_size + 7) & ~7); | |
6350 | if (next_cmse_stub_offset > htab->new_cmse_stub_offset) | |
6351 | htab->new_cmse_stub_offset = next_cmse_stub_offset; | |
6352 | } | |
6353 | ||
6354 | if (!info->out_implib_bfd && new_cmse_stubs_created != 0) | |
6355 | { | |
6356 | BFD_ASSERT (new_cmse_stubs_created > 0); | |
4eca0228 | 6357 | _bfd_error_handler |
0955507f TP |
6358 | (_("new entry function(s) introduced but no output import library " |
6359 | "specified:")); | |
6360 | bfd_hash_traverse (&htab->stub_hash_table, arm_list_new_cmse_stub, info); | |
6361 | } | |
6362 | ||
6363 | if (cmse_stub_array_start != cmse_stub_sec_vma) | |
6364 | { | |
4eca0228 | 6365 | _bfd_error_handler |
90b6238f | 6366 | (_("start address of `%s' is different from previous link"), |
0955507f TP |
6367 | out_sec_name); |
6368 | ret = FALSE; | |
6369 | } | |
6370 | ||
6371 | free_sym_buf: | |
6372 | free (sympp); | |
6373 | return ret; | |
6374 | } | |
6375 | ||
906e58ca NC |
6376 | /* Determine and set the size of the stub section for a final link. |
6377 | ||
6378 | The basic idea here is to examine all the relocations looking for | |
6379 | PC-relative calls to a target that is unreachable with a "bl" | |
6380 | instruction. */ | |
6381 | ||
6382 | bfd_boolean | |
6383 | elf32_arm_size_stubs (bfd *output_bfd, | |
6384 | bfd *stub_bfd, | |
6385 | struct bfd_link_info *info, | |
6386 | bfd_signed_vma group_size, | |
7a89b94e | 6387 | asection * (*add_stub_section) (const char *, asection *, |
6bde4c52 | 6388 | asection *, |
7a89b94e | 6389 | unsigned int), |
906e58ca NC |
6390 | void (*layout_sections_again) (void)) |
6391 | { | |
0955507f | 6392 | bfd_boolean ret = TRUE; |
4ba2ef8f | 6393 | obj_attribute *out_attr; |
0955507f | 6394 | int cmse_stub_created = 0; |
906e58ca | 6395 | bfd_size_type stub_group_size; |
4ba2ef8f | 6396 | bfd_boolean m_profile, stubs_always_after_branch, first_veneer_scan = TRUE; |
906e58ca | 6397 | struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info); |
48229727 | 6398 | struct a8_erratum_fix *a8_fixes = NULL; |
eb7c4339 | 6399 | unsigned int num_a8_fixes = 0, a8_fix_table_size = 10; |
48229727 JB |
6400 | struct a8_erratum_reloc *a8_relocs = NULL; |
6401 | unsigned int num_a8_relocs = 0, a8_reloc_table_size = 10, i; | |
6402 | ||
4dfe6ac6 NC |
6403 | if (htab == NULL) |
6404 | return FALSE; | |
6405 | ||
48229727 JB |
6406 | if (htab->fix_cortex_a8) |
6407 | { | |
21d799b5 | 6408 | a8_fixes = (struct a8_erratum_fix *) |
99059e56 | 6409 | bfd_zmalloc (sizeof (struct a8_erratum_fix) * a8_fix_table_size); |
21d799b5 | 6410 | a8_relocs = (struct a8_erratum_reloc *) |
99059e56 | 6411 | bfd_zmalloc (sizeof (struct a8_erratum_reloc) * a8_reloc_table_size); |
48229727 | 6412 | } |
906e58ca NC |
6413 | |
6414 | /* Propagate mach to stub bfd, because it may not have been | |
6415 | finalized when we created stub_bfd. */ | |
6416 | bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd), | |
6417 | bfd_get_mach (output_bfd)); | |
6418 | ||
6419 | /* Stash our params away. */ | |
6420 | htab->stub_bfd = stub_bfd; | |
6421 | htab->add_stub_section = add_stub_section; | |
6422 | htab->layout_sections_again = layout_sections_again; | |
07d72278 | 6423 | stubs_always_after_branch = group_size < 0; |
48229727 | 6424 | |
4ba2ef8f TP |
6425 | out_attr = elf_known_obj_attributes_proc (output_bfd); |
6426 | m_profile = out_attr[Tag_CPU_arch_profile].i == 'M'; | |
0955507f | 6427 | |
48229727 JB |
6428 | /* The Cortex-A8 erratum fix depends on stubs not being in the same 4K page |
6429 | as the first half of a 32-bit branch straddling two 4K pages. This is a | |
6430 | crude way of enforcing that. */ | |
6431 | if (htab->fix_cortex_a8) | |
6432 | stubs_always_after_branch = 1; | |
6433 | ||
906e58ca NC |
6434 | if (group_size < 0) |
6435 | stub_group_size = -group_size; | |
6436 | else | |
6437 | stub_group_size = group_size; | |
6438 | ||
6439 | if (stub_group_size == 1) | |
6440 | { | |
6441 | /* Default values. */ | |
6442 | /* Thumb branch range is +-4MB has to be used as the default | |
6443 | maximum size (a given section can contain both ARM and Thumb | |
6444 | code, so the worst case has to be taken into account). | |
6445 | ||
6446 | This value is 24K less than that, which allows for 2025 | |
6447 | 12-byte stubs. If we exceed that, then we will fail to link. | |
6448 | The user will have to relink with an explicit group size | |
6449 | option. */ | |
6450 | stub_group_size = 4170000; | |
6451 | } | |
6452 | ||
07d72278 | 6453 | group_sections (htab, stub_group_size, stubs_always_after_branch); |
906e58ca | 6454 | |
3ae046cc NS |
6455 | /* If we're applying the cortex A8 fix, we need to determine the |
6456 | program header size now, because we cannot change it later -- | |
6457 | that could alter section placements. Notice the A8 erratum fix | |
6458 | ends up requiring the section addresses to remain unchanged | |
6459 | modulo the page size. That's something we cannot represent | |
6460 | inside BFD, and we don't want to force the section alignment to | |
6461 | be the page size. */ | |
6462 | if (htab->fix_cortex_a8) | |
6463 | (*htab->layout_sections_again) (); | |
6464 | ||
906e58ca NC |
6465 | while (1) |
6466 | { | |
6467 | bfd *input_bfd; | |
6468 | unsigned int bfd_indx; | |
6469 | asection *stub_sec; | |
d7c5bd02 | 6470 | enum elf32_arm_stub_type stub_type; |
eb7c4339 NS |
6471 | bfd_boolean stub_changed = FALSE; |
6472 | unsigned prev_num_a8_fixes = num_a8_fixes; | |
906e58ca | 6473 | |
48229727 | 6474 | num_a8_fixes = 0; |
906e58ca NC |
6475 | for (input_bfd = info->input_bfds, bfd_indx = 0; |
6476 | input_bfd != NULL; | |
c72f2fb2 | 6477 | input_bfd = input_bfd->link.next, bfd_indx++) |
906e58ca NC |
6478 | { |
6479 | Elf_Internal_Shdr *symtab_hdr; | |
6480 | asection *section; | |
6481 | Elf_Internal_Sym *local_syms = NULL; | |
6482 | ||
8c246a60 AM |
6483 | if (!is_arm_elf (input_bfd) |
6484 | || (elf_dyn_lib_class (input_bfd) & DYN_AS_NEEDED) != 0) | |
99059e56 | 6485 | continue; |
adbcc655 | 6486 | |
48229727 JB |
6487 | num_a8_relocs = 0; |
6488 | ||
906e58ca NC |
6489 | /* We'll need the symbol table in a second. */ |
6490 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
6491 | if (symtab_hdr->sh_info == 0) | |
6492 | continue; | |
6493 | ||
4ba2ef8f TP |
6494 | /* Limit scan of symbols to object file whose profile is |
6495 | Microcontroller to not hinder performance in the general case. */ | |
6496 | if (m_profile && first_veneer_scan) | |
6497 | { | |
6498 | struct elf_link_hash_entry **sym_hashes; | |
6499 | ||
6500 | sym_hashes = elf_sym_hashes (input_bfd); | |
6501 | if (!cmse_scan (input_bfd, htab, out_attr, sym_hashes, | |
0955507f | 6502 | &cmse_stub_created)) |
4ba2ef8f | 6503 | goto error_ret_free_local; |
0955507f TP |
6504 | |
6505 | if (cmse_stub_created != 0) | |
6506 | stub_changed = TRUE; | |
4ba2ef8f TP |
6507 | } |
6508 | ||
906e58ca NC |
6509 | /* Walk over each section attached to the input bfd. */ |
6510 | for (section = input_bfd->sections; | |
6511 | section != NULL; | |
6512 | section = section->next) | |
6513 | { | |
6514 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
6515 | ||
6516 | /* If there aren't any relocs, then there's nothing more | |
6517 | to do. */ | |
6518 | if ((section->flags & SEC_RELOC) == 0 | |
6519 | || section->reloc_count == 0 | |
6520 | || (section->flags & SEC_CODE) == 0) | |
6521 | continue; | |
6522 | ||
6523 | /* If this section is a link-once section that will be | |
6524 | discarded, then don't create any stubs. */ | |
6525 | if (section->output_section == NULL | |
6526 | || section->output_section->owner != output_bfd) | |
6527 | continue; | |
6528 | ||
6529 | /* Get the relocs. */ | |
6530 | internal_relocs | |
6531 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, | |
6532 | NULL, info->keep_memory); | |
6533 | if (internal_relocs == NULL) | |
6534 | goto error_ret_free_local; | |
6535 | ||
6536 | /* Now examine each relocation. */ | |
6537 | irela = internal_relocs; | |
6538 | irelaend = irela + section->reloc_count; | |
6539 | for (; irela < irelaend; irela++) | |
6540 | { | |
6541 | unsigned int r_type, r_indx; | |
906e58ca NC |
6542 | asection *sym_sec; |
6543 | bfd_vma sym_value; | |
6544 | bfd_vma destination; | |
6545 | struct elf32_arm_link_hash_entry *hash; | |
7413f23f | 6546 | const char *sym_name; |
34e77a92 | 6547 | unsigned char st_type; |
35fc36a8 | 6548 | enum arm_st_branch_type branch_type; |
48229727 | 6549 | bfd_boolean created_stub = FALSE; |
906e58ca NC |
6550 | |
6551 | r_type = ELF32_R_TYPE (irela->r_info); | |
6552 | r_indx = ELF32_R_SYM (irela->r_info); | |
6553 | ||
6554 | if (r_type >= (unsigned int) R_ARM_max) | |
6555 | { | |
6556 | bfd_set_error (bfd_error_bad_value); | |
6557 | error_ret_free_internal: | |
6558 | if (elf_section_data (section)->relocs == NULL) | |
6559 | free (internal_relocs); | |
15dd01b1 TP |
6560 | /* Fall through. */ |
6561 | error_ret_free_local: | |
6562 | if (local_syms != NULL | |
6563 | && (symtab_hdr->contents | |
6564 | != (unsigned char *) local_syms)) | |
6565 | free (local_syms); | |
6566 | return FALSE; | |
906e58ca | 6567 | } |
b38cadfb | 6568 | |
0855e32b NS |
6569 | hash = NULL; |
6570 | if (r_indx >= symtab_hdr->sh_info) | |
6571 | hash = elf32_arm_hash_entry | |
6572 | (elf_sym_hashes (input_bfd) | |
6573 | [r_indx - symtab_hdr->sh_info]); | |
b38cadfb | 6574 | |
0855e32b NS |
6575 | /* Only look for stubs on branch instructions, or |
6576 | non-relaxed TLSCALL */ | |
906e58ca | 6577 | if ((r_type != (unsigned int) R_ARM_CALL) |
155d87d7 CL |
6578 | && (r_type != (unsigned int) R_ARM_THM_CALL) |
6579 | && (r_type != (unsigned int) R_ARM_JUMP24) | |
48229727 JB |
6580 | && (r_type != (unsigned int) R_ARM_THM_JUMP19) |
6581 | && (r_type != (unsigned int) R_ARM_THM_XPC22) | |
155d87d7 | 6582 | && (r_type != (unsigned int) R_ARM_THM_JUMP24) |
0855e32b NS |
6583 | && (r_type != (unsigned int) R_ARM_PLT32) |
6584 | && !((r_type == (unsigned int) R_ARM_TLS_CALL | |
6585 | || r_type == (unsigned int) R_ARM_THM_TLS_CALL) | |
6586 | && r_type == elf32_arm_tls_transition | |
6587 | (info, r_type, &hash->root) | |
6588 | && ((hash ? hash->tls_type | |
6589 | : (elf32_arm_local_got_tls_type | |
6590 | (input_bfd)[r_indx])) | |
6591 | & GOT_TLS_GDESC) != 0)) | |
906e58ca NC |
6592 | continue; |
6593 | ||
6594 | /* Now determine the call target, its name, value, | |
6595 | section. */ | |
6596 | sym_sec = NULL; | |
6597 | sym_value = 0; | |
6598 | destination = 0; | |
7413f23f | 6599 | sym_name = NULL; |
b38cadfb | 6600 | |
0855e32b NS |
6601 | if (r_type == (unsigned int) R_ARM_TLS_CALL |
6602 | || r_type == (unsigned int) R_ARM_THM_TLS_CALL) | |
6603 | { | |
6604 | /* A non-relaxed TLS call. The target is the | |
6605 | plt-resident trampoline and nothing to do | |
6606 | with the symbol. */ | |
6607 | BFD_ASSERT (htab->tls_trampoline > 0); | |
6608 | sym_sec = htab->root.splt; | |
6609 | sym_value = htab->tls_trampoline; | |
6610 | hash = 0; | |
34e77a92 | 6611 | st_type = STT_FUNC; |
35fc36a8 | 6612 | branch_type = ST_BRANCH_TO_ARM; |
0855e32b NS |
6613 | } |
6614 | else if (!hash) | |
906e58ca NC |
6615 | { |
6616 | /* It's a local symbol. */ | |
6617 | Elf_Internal_Sym *sym; | |
906e58ca NC |
6618 | |
6619 | if (local_syms == NULL) | |
6620 | { | |
6621 | local_syms | |
6622 | = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6623 | if (local_syms == NULL) | |
6624 | local_syms | |
6625 | = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
6626 | symtab_hdr->sh_info, 0, | |
6627 | NULL, NULL, NULL); | |
6628 | if (local_syms == NULL) | |
6629 | goto error_ret_free_internal; | |
6630 | } | |
6631 | ||
6632 | sym = local_syms + r_indx; | |
f6d250ce TS |
6633 | if (sym->st_shndx == SHN_UNDEF) |
6634 | sym_sec = bfd_und_section_ptr; | |
6635 | else if (sym->st_shndx == SHN_ABS) | |
6636 | sym_sec = bfd_abs_section_ptr; | |
6637 | else if (sym->st_shndx == SHN_COMMON) | |
6638 | sym_sec = bfd_com_section_ptr; | |
6639 | else | |
6640 | sym_sec = | |
6641 | bfd_section_from_elf_index (input_bfd, sym->st_shndx); | |
6642 | ||
ffcb4889 NS |
6643 | if (!sym_sec) |
6644 | /* This is an undefined symbol. It can never | |
6a631e86 | 6645 | be resolved. */ |
ffcb4889 | 6646 | continue; |
fe33d2fa | 6647 | |
906e58ca NC |
6648 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) |
6649 | sym_value = sym->st_value; | |
6650 | destination = (sym_value + irela->r_addend | |
6651 | + sym_sec->output_offset | |
6652 | + sym_sec->output_section->vma); | |
34e77a92 | 6653 | st_type = ELF_ST_TYPE (sym->st_info); |
39d911fc TP |
6654 | branch_type = |
6655 | ARM_GET_SYM_BRANCH_TYPE (sym->st_target_internal); | |
7413f23f DJ |
6656 | sym_name |
6657 | = bfd_elf_string_from_elf_section (input_bfd, | |
6658 | symtab_hdr->sh_link, | |
6659 | sym->st_name); | |
906e58ca NC |
6660 | } |
6661 | else | |
6662 | { | |
6663 | /* It's an external symbol. */ | |
906e58ca NC |
6664 | while (hash->root.root.type == bfd_link_hash_indirect |
6665 | || hash->root.root.type == bfd_link_hash_warning) | |
6666 | hash = ((struct elf32_arm_link_hash_entry *) | |
6667 | hash->root.root.u.i.link); | |
6668 | ||
6669 | if (hash->root.root.type == bfd_link_hash_defined | |
6670 | || hash->root.root.type == bfd_link_hash_defweak) | |
6671 | { | |
6672 | sym_sec = hash->root.root.u.def.section; | |
6673 | sym_value = hash->root.root.u.def.value; | |
022f8312 CL |
6674 | |
6675 | struct elf32_arm_link_hash_table *globals = | |
6676 | elf32_arm_hash_table (info); | |
6677 | ||
6678 | /* For a destination in a shared library, | |
6679 | use the PLT stub as target address to | |
6680 | decide whether a branch stub is | |
6681 | needed. */ | |
4dfe6ac6 | 6682 | if (globals != NULL |
362d30a1 | 6683 | && globals->root.splt != NULL |
4dfe6ac6 | 6684 | && hash != NULL |
022f8312 CL |
6685 | && hash->root.plt.offset != (bfd_vma) -1) |
6686 | { | |
362d30a1 | 6687 | sym_sec = globals->root.splt; |
022f8312 CL |
6688 | sym_value = hash->root.plt.offset; |
6689 | if (sym_sec->output_section != NULL) | |
6690 | destination = (sym_value | |
6691 | + sym_sec->output_offset | |
6692 | + sym_sec->output_section->vma); | |
6693 | } | |
6694 | else if (sym_sec->output_section != NULL) | |
906e58ca NC |
6695 | destination = (sym_value + irela->r_addend |
6696 | + sym_sec->output_offset | |
6697 | + sym_sec->output_section->vma); | |
6698 | } | |
69c5861e CL |
6699 | else if ((hash->root.root.type == bfd_link_hash_undefined) |
6700 | || (hash->root.root.type == bfd_link_hash_undefweak)) | |
6701 | { | |
6702 | /* For a shared library, use the PLT stub as | |
6703 | target address to decide whether a long | |
6704 | branch stub is needed. | |
6705 | For absolute code, they cannot be handled. */ | |
6706 | struct elf32_arm_link_hash_table *globals = | |
6707 | elf32_arm_hash_table (info); | |
6708 | ||
4dfe6ac6 | 6709 | if (globals != NULL |
362d30a1 | 6710 | && globals->root.splt != NULL |
4dfe6ac6 | 6711 | && hash != NULL |
69c5861e CL |
6712 | && hash->root.plt.offset != (bfd_vma) -1) |
6713 | { | |
362d30a1 | 6714 | sym_sec = globals->root.splt; |
69c5861e CL |
6715 | sym_value = hash->root.plt.offset; |
6716 | if (sym_sec->output_section != NULL) | |
6717 | destination = (sym_value | |
6718 | + sym_sec->output_offset | |
6719 | + sym_sec->output_section->vma); | |
6720 | } | |
6721 | else | |
6722 | continue; | |
6723 | } | |
906e58ca NC |
6724 | else |
6725 | { | |
6726 | bfd_set_error (bfd_error_bad_value); | |
6727 | goto error_ret_free_internal; | |
6728 | } | |
34e77a92 | 6729 | st_type = hash->root.type; |
39d911fc TP |
6730 | branch_type = |
6731 | ARM_GET_SYM_BRANCH_TYPE (hash->root.target_internal); | |
7413f23f | 6732 | sym_name = hash->root.root.root.string; |
906e58ca NC |
6733 | } |
6734 | ||
48229727 | 6735 | do |
7413f23f | 6736 | { |
b715f643 | 6737 | bfd_boolean new_stub; |
0955507f | 6738 | struct elf32_arm_stub_hash_entry *stub_entry; |
b715f643 | 6739 | |
48229727 JB |
6740 | /* Determine what (if any) linker stub is needed. */ |
6741 | stub_type = arm_type_of_stub (info, section, irela, | |
34e77a92 RS |
6742 | st_type, &branch_type, |
6743 | hash, destination, sym_sec, | |
48229727 JB |
6744 | input_bfd, sym_name); |
6745 | if (stub_type == arm_stub_none) | |
6746 | break; | |
6747 | ||
48229727 JB |
6748 | /* We've either created a stub for this reloc already, |
6749 | or we are about to. */ | |
0955507f | 6750 | stub_entry = |
b715f643 TP |
6751 | elf32_arm_create_stub (htab, stub_type, section, irela, |
6752 | sym_sec, hash, | |
6753 | (char *) sym_name, sym_value, | |
6754 | branch_type, &new_stub); | |
7413f23f | 6755 | |
0955507f | 6756 | created_stub = stub_entry != NULL; |
b715f643 TP |
6757 | if (!created_stub) |
6758 | goto error_ret_free_internal; | |
6759 | else if (!new_stub) | |
6760 | break; | |
99059e56 | 6761 | else |
b715f643 | 6762 | stub_changed = TRUE; |
99059e56 RM |
6763 | } |
6764 | while (0); | |
6765 | ||
6766 | /* Look for relocations which might trigger Cortex-A8 | |
6767 | erratum. */ | |
6768 | if (htab->fix_cortex_a8 | |
6769 | && (r_type == (unsigned int) R_ARM_THM_JUMP24 | |
6770 | || r_type == (unsigned int) R_ARM_THM_JUMP19 | |
6771 | || r_type == (unsigned int) R_ARM_THM_CALL | |
6772 | || r_type == (unsigned int) R_ARM_THM_XPC22)) | |
6773 | { | |
6774 | bfd_vma from = section->output_section->vma | |
6775 | + section->output_offset | |
6776 | + irela->r_offset; | |
6777 | ||
6778 | if ((from & 0xfff) == 0xffe) | |
6779 | { | |
6780 | /* Found a candidate. Note we haven't checked the | |
6781 | destination is within 4K here: if we do so (and | |
6782 | don't create an entry in a8_relocs) we can't tell | |
6783 | that a branch should have been relocated when | |
6784 | scanning later. */ | |
6785 | if (num_a8_relocs == a8_reloc_table_size) | |
6786 | { | |
6787 | a8_reloc_table_size *= 2; | |
6788 | a8_relocs = (struct a8_erratum_reloc *) | |
6789 | bfd_realloc (a8_relocs, | |
6790 | sizeof (struct a8_erratum_reloc) | |
6791 | * a8_reloc_table_size); | |
6792 | } | |
6793 | ||
6794 | a8_relocs[num_a8_relocs].from = from; | |
6795 | a8_relocs[num_a8_relocs].destination = destination; | |
6796 | a8_relocs[num_a8_relocs].r_type = r_type; | |
6797 | a8_relocs[num_a8_relocs].branch_type = branch_type; | |
6798 | a8_relocs[num_a8_relocs].sym_name = sym_name; | |
6799 | a8_relocs[num_a8_relocs].non_a8_stub = created_stub; | |
6800 | a8_relocs[num_a8_relocs].hash = hash; | |
6801 | ||
6802 | num_a8_relocs++; | |
6803 | } | |
6804 | } | |
906e58ca NC |
6805 | } |
6806 | ||
99059e56 RM |
6807 | /* We're done with the internal relocs, free them. */ |
6808 | if (elf_section_data (section)->relocs == NULL) | |
6809 | free (internal_relocs); | |
6810 | } | |
48229727 | 6811 | |
99059e56 | 6812 | if (htab->fix_cortex_a8) |
48229727 | 6813 | { |
99059e56 RM |
6814 | /* Sort relocs which might apply to Cortex-A8 erratum. */ |
6815 | qsort (a8_relocs, num_a8_relocs, | |
eb7c4339 | 6816 | sizeof (struct a8_erratum_reloc), |
99059e56 | 6817 | &a8_reloc_compare); |
48229727 | 6818 | |
99059e56 RM |
6819 | /* Scan for branches which might trigger Cortex-A8 erratum. */ |
6820 | if (cortex_a8_erratum_scan (input_bfd, info, &a8_fixes, | |
48229727 | 6821 | &num_a8_fixes, &a8_fix_table_size, |
eb7c4339 NS |
6822 | a8_relocs, num_a8_relocs, |
6823 | prev_num_a8_fixes, &stub_changed) | |
6824 | != 0) | |
48229727 | 6825 | goto error_ret_free_local; |
5e681ec4 | 6826 | } |
7f991970 AM |
6827 | |
6828 | if (local_syms != NULL | |
6829 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6830 | { | |
6831 | if (!info->keep_memory) | |
6832 | free (local_syms); | |
6833 | else | |
6834 | symtab_hdr->contents = (unsigned char *) local_syms; | |
6835 | } | |
5e681ec4 PB |
6836 | } |
6837 | ||
0955507f TP |
6838 | if (first_veneer_scan |
6839 | && !set_cmse_veneer_addr_from_implib (info, htab, | |
6840 | &cmse_stub_created)) | |
6841 | ret = FALSE; | |
6842 | ||
eb7c4339 | 6843 | if (prev_num_a8_fixes != num_a8_fixes) |
99059e56 | 6844 | stub_changed = TRUE; |
48229727 | 6845 | |
906e58ca NC |
6846 | if (!stub_changed) |
6847 | break; | |
5e681ec4 | 6848 | |
906e58ca NC |
6849 | /* OK, we've added some stubs. Find out the new size of the |
6850 | stub sections. */ | |
6851 | for (stub_sec = htab->stub_bfd->sections; | |
6852 | stub_sec != NULL; | |
6853 | stub_sec = stub_sec->next) | |
3e6b1042 DJ |
6854 | { |
6855 | /* Ignore non-stub sections. */ | |
6856 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
6857 | continue; | |
6858 | ||
6859 | stub_sec->size = 0; | |
6860 | } | |
b34b2d70 | 6861 | |
0955507f TP |
6862 | /* Add new SG veneers after those already in the input import |
6863 | library. */ | |
6864 | for (stub_type = arm_stub_none + 1; stub_type < max_stub_type; | |
6865 | stub_type++) | |
6866 | { | |
6867 | bfd_vma *start_offset_p; | |
6868 | asection **stub_sec_p; | |
6869 | ||
6870 | start_offset_p = arm_new_stubs_start_offset_ptr (htab, stub_type); | |
6871 | stub_sec_p = arm_dedicated_stub_input_section_ptr (htab, stub_type); | |
6872 | if (start_offset_p == NULL) | |
6873 | continue; | |
6874 | ||
6875 | BFD_ASSERT (stub_sec_p != NULL); | |
6876 | if (*stub_sec_p != NULL) | |
6877 | (*stub_sec_p)->size = *start_offset_p; | |
6878 | } | |
6879 | ||
d7c5bd02 | 6880 | /* Compute stub section size, considering padding. */ |
906e58ca | 6881 | bfd_hash_traverse (&htab->stub_hash_table, arm_size_one_stub, htab); |
d7c5bd02 TP |
6882 | for (stub_type = arm_stub_none + 1; stub_type < max_stub_type; |
6883 | stub_type++) | |
6884 | { | |
6885 | int size, padding; | |
6886 | asection **stub_sec_p; | |
6887 | ||
6888 | padding = arm_dedicated_stub_section_padding (stub_type); | |
6889 | stub_sec_p = arm_dedicated_stub_input_section_ptr (htab, stub_type); | |
6890 | /* Skip if no stub input section or no stub section padding | |
6891 | required. */ | |
6892 | if ((stub_sec_p != NULL && *stub_sec_p == NULL) || padding == 0) | |
6893 | continue; | |
6894 | /* Stub section padding required but no dedicated section. */ | |
6895 | BFD_ASSERT (stub_sec_p); | |
6896 | ||
6897 | size = (*stub_sec_p)->size; | |
6898 | size = (size + padding - 1) & ~(padding - 1); | |
6899 | (*stub_sec_p)->size = size; | |
6900 | } | |
906e58ca | 6901 | |
48229727 JB |
6902 | /* Add Cortex-A8 erratum veneers to stub section sizes too. */ |
6903 | if (htab->fix_cortex_a8) | |
99059e56 RM |
6904 | for (i = 0; i < num_a8_fixes; i++) |
6905 | { | |
48229727 | 6906 | stub_sec = elf32_arm_create_or_find_stub_sec (NULL, |
daa4adae | 6907 | a8_fixes[i].section, htab, a8_fixes[i].stub_type); |
48229727 JB |
6908 | |
6909 | if (stub_sec == NULL) | |
7f991970 | 6910 | return FALSE; |
48229727 | 6911 | |
99059e56 RM |
6912 | stub_sec->size |
6913 | += find_stub_size_and_template (a8_fixes[i].stub_type, NULL, | |
6914 | NULL); | |
6915 | } | |
48229727 JB |
6916 | |
6917 | ||
906e58ca NC |
6918 | /* Ask the linker to do its stuff. */ |
6919 | (*htab->layout_sections_again) (); | |
4ba2ef8f | 6920 | first_veneer_scan = FALSE; |
ba93b8ac DJ |
6921 | } |
6922 | ||
48229727 JB |
6923 | /* Add stubs for Cortex-A8 erratum fixes now. */ |
6924 | if (htab->fix_cortex_a8) | |
6925 | { | |
6926 | for (i = 0; i < num_a8_fixes; i++) | |
99059e56 RM |
6927 | { |
6928 | struct elf32_arm_stub_hash_entry *stub_entry; | |
6929 | char *stub_name = a8_fixes[i].stub_name; | |
6930 | asection *section = a8_fixes[i].section; | |
6931 | unsigned int section_id = a8_fixes[i].section->id; | |
6932 | asection *link_sec = htab->stub_group[section_id].link_sec; | |
6933 | asection *stub_sec = htab->stub_group[section_id].stub_sec; | |
6934 | const insn_sequence *template_sequence; | |
6935 | int template_size, size = 0; | |
6936 | ||
6937 | stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
6938 | TRUE, FALSE); | |
6939 | if (stub_entry == NULL) | |
6940 | { | |
871b3ab2 | 6941 | _bfd_error_handler (_("%pB: cannot create stub entry %s"), |
4eca0228 | 6942 | section->owner, stub_name); |
99059e56 RM |
6943 | return FALSE; |
6944 | } | |
6945 | ||
6946 | stub_entry->stub_sec = stub_sec; | |
0955507f | 6947 | stub_entry->stub_offset = (bfd_vma) -1; |
99059e56 RM |
6948 | stub_entry->id_sec = link_sec; |
6949 | stub_entry->stub_type = a8_fixes[i].stub_type; | |
8d9d9490 | 6950 | stub_entry->source_value = a8_fixes[i].offset; |
99059e56 | 6951 | stub_entry->target_section = a8_fixes[i].section; |
8d9d9490 | 6952 | stub_entry->target_value = a8_fixes[i].target_offset; |
99059e56 | 6953 | stub_entry->orig_insn = a8_fixes[i].orig_insn; |
35fc36a8 | 6954 | stub_entry->branch_type = a8_fixes[i].branch_type; |
48229727 | 6955 | |
99059e56 RM |
6956 | size = find_stub_size_and_template (a8_fixes[i].stub_type, |
6957 | &template_sequence, | |
6958 | &template_size); | |
48229727 | 6959 | |
99059e56 RM |
6960 | stub_entry->stub_size = size; |
6961 | stub_entry->stub_template = template_sequence; | |
6962 | stub_entry->stub_template_size = template_size; | |
6963 | } | |
48229727 JB |
6964 | |
6965 | /* Stash the Cortex-A8 erratum fix array for use later in | |
99059e56 | 6966 | elf32_arm_write_section(). */ |
48229727 JB |
6967 | htab->a8_erratum_fixes = a8_fixes; |
6968 | htab->num_a8_erratum_fixes = num_a8_fixes; | |
6969 | } | |
6970 | else | |
6971 | { | |
6972 | htab->a8_erratum_fixes = NULL; | |
6973 | htab->num_a8_erratum_fixes = 0; | |
6974 | } | |
0955507f | 6975 | return ret; |
5e681ec4 PB |
6976 | } |
6977 | ||
906e58ca NC |
6978 | /* Build all the stubs associated with the current output file. The |
6979 | stubs are kept in a hash table attached to the main linker hash | |
6980 | table. We also set up the .plt entries for statically linked PIC | |
6981 | functions here. This function is called via arm_elf_finish in the | |
6982 | linker. */ | |
252b5132 | 6983 | |
906e58ca NC |
6984 | bfd_boolean |
6985 | elf32_arm_build_stubs (struct bfd_link_info *info) | |
252b5132 | 6986 | { |
906e58ca NC |
6987 | asection *stub_sec; |
6988 | struct bfd_hash_table *table; | |
0955507f | 6989 | enum elf32_arm_stub_type stub_type; |
906e58ca | 6990 | struct elf32_arm_link_hash_table *htab; |
252b5132 | 6991 | |
906e58ca | 6992 | htab = elf32_arm_hash_table (info); |
4dfe6ac6 NC |
6993 | if (htab == NULL) |
6994 | return FALSE; | |
252b5132 | 6995 | |
906e58ca NC |
6996 | for (stub_sec = htab->stub_bfd->sections; |
6997 | stub_sec != NULL; | |
6998 | stub_sec = stub_sec->next) | |
252b5132 | 6999 | { |
906e58ca NC |
7000 | bfd_size_type size; |
7001 | ||
8029a119 | 7002 | /* Ignore non-stub sections. */ |
906e58ca NC |
7003 | if (!strstr (stub_sec->name, STUB_SUFFIX)) |
7004 | continue; | |
7005 | ||
d7c5bd02 | 7006 | /* Allocate memory to hold the linker stubs. Zeroing the stub sections |
0955507f TP |
7007 | must at least be done for stub section requiring padding and for SG |
7008 | veneers to ensure that a non secure code branching to a removed SG | |
7009 | veneer causes an error. */ | |
906e58ca | 7010 | size = stub_sec->size; |
21d799b5 | 7011 | stub_sec->contents = (unsigned char *) bfd_zalloc (htab->stub_bfd, size); |
906e58ca NC |
7012 | if (stub_sec->contents == NULL && size != 0) |
7013 | return FALSE; | |
0955507f | 7014 | |
906e58ca | 7015 | stub_sec->size = 0; |
252b5132 RH |
7016 | } |
7017 | ||
0955507f TP |
7018 | /* Add new SG veneers after those already in the input import library. */ |
7019 | for (stub_type = arm_stub_none + 1; stub_type < max_stub_type; stub_type++) | |
7020 | { | |
7021 | bfd_vma *start_offset_p; | |
7022 | asection **stub_sec_p; | |
7023 | ||
7024 | start_offset_p = arm_new_stubs_start_offset_ptr (htab, stub_type); | |
7025 | stub_sec_p = arm_dedicated_stub_input_section_ptr (htab, stub_type); | |
7026 | if (start_offset_p == NULL) | |
7027 | continue; | |
7028 | ||
7029 | BFD_ASSERT (stub_sec_p != NULL); | |
7030 | if (*stub_sec_p != NULL) | |
7031 | (*stub_sec_p)->size = *start_offset_p; | |
7032 | } | |
7033 | ||
906e58ca NC |
7034 | /* Build the stubs as directed by the stub hash table. */ |
7035 | table = &htab->stub_hash_table; | |
7036 | bfd_hash_traverse (table, arm_build_one_stub, info); | |
eb7c4339 NS |
7037 | if (htab->fix_cortex_a8) |
7038 | { | |
7039 | /* Place the cortex a8 stubs last. */ | |
7040 | htab->fix_cortex_a8 = -1; | |
7041 | bfd_hash_traverse (table, arm_build_one_stub, info); | |
7042 | } | |
252b5132 | 7043 | |
906e58ca | 7044 | return TRUE; |
252b5132 RH |
7045 | } |
7046 | ||
9b485d32 NC |
7047 | /* Locate the Thumb encoded calling stub for NAME. */ |
7048 | ||
252b5132 | 7049 | static struct elf_link_hash_entry * |
57e8b36a NC |
7050 | find_thumb_glue (struct bfd_link_info *link_info, |
7051 | const char *name, | |
f2a9dd69 | 7052 | char **error_message) |
252b5132 RH |
7053 | { |
7054 | char *tmp_name; | |
7055 | struct elf_link_hash_entry *hash; | |
7056 | struct elf32_arm_link_hash_table *hash_table; | |
7057 | ||
7058 | /* We need a pointer to the armelf specific hash table. */ | |
7059 | hash_table = elf32_arm_hash_table (link_info); | |
4dfe6ac6 NC |
7060 | if (hash_table == NULL) |
7061 | return NULL; | |
252b5132 | 7062 | |
21d799b5 | 7063 | tmp_name = (char *) bfd_malloc ((bfd_size_type) strlen (name) |
99059e56 | 7064 | + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1); |
252b5132 RH |
7065 | |
7066 | BFD_ASSERT (tmp_name); | |
7067 | ||
7068 | sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); | |
7069 | ||
7070 | hash = elf_link_hash_lookup | |
b34976b6 | 7071 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 | 7072 | |
b1657152 | 7073 | if (hash == NULL |
90b6238f AM |
7074 | && asprintf (error_message, _("unable to find %s glue '%s' for '%s'"), |
7075 | "Thumb", tmp_name, name) == -1) | |
b1657152 | 7076 | *error_message = (char *) bfd_errmsg (bfd_error_system_call); |
252b5132 RH |
7077 | |
7078 | free (tmp_name); | |
7079 | ||
7080 | return hash; | |
7081 | } | |
7082 | ||
9b485d32 NC |
7083 | /* Locate the ARM encoded calling stub for NAME. */ |
7084 | ||
252b5132 | 7085 | static struct elf_link_hash_entry * |
57e8b36a NC |
7086 | find_arm_glue (struct bfd_link_info *link_info, |
7087 | const char *name, | |
f2a9dd69 | 7088 | char **error_message) |
252b5132 RH |
7089 | { |
7090 | char *tmp_name; | |
7091 | struct elf_link_hash_entry *myh; | |
7092 | struct elf32_arm_link_hash_table *hash_table; | |
7093 | ||
7094 | /* We need a pointer to the elfarm specific hash table. */ | |
7095 | hash_table = elf32_arm_hash_table (link_info); | |
4dfe6ac6 NC |
7096 | if (hash_table == NULL) |
7097 | return NULL; | |
252b5132 | 7098 | |
21d799b5 | 7099 | tmp_name = (char *) bfd_malloc ((bfd_size_type) strlen (name) |
99059e56 | 7100 | + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1); |
252b5132 RH |
7101 | |
7102 | BFD_ASSERT (tmp_name); | |
7103 | ||
7104 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); | |
7105 | ||
7106 | myh = elf_link_hash_lookup | |
b34976b6 | 7107 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 | 7108 | |
b1657152 | 7109 | if (myh == NULL |
90b6238f AM |
7110 | && asprintf (error_message, _("unable to find %s glue '%s' for '%s'"), |
7111 | "ARM", tmp_name, name) == -1) | |
b1657152 | 7112 | *error_message = (char *) bfd_errmsg (bfd_error_system_call); |
252b5132 RH |
7113 | |
7114 | free (tmp_name); | |
7115 | ||
7116 | return myh; | |
7117 | } | |
7118 | ||
8f6277f5 | 7119 | /* ARM->Thumb glue (static images): |
252b5132 RH |
7120 | |
7121 | .arm | |
7122 | __func_from_arm: | |
7123 | ldr r12, __func_addr | |
7124 | bx r12 | |
7125 | __func_addr: | |
906e58ca | 7126 | .word func @ behave as if you saw a ARM_32 reloc. |
252b5132 | 7127 | |
26079076 PB |
7128 | (v5t static images) |
7129 | .arm | |
7130 | __func_from_arm: | |
7131 | ldr pc, __func_addr | |
7132 | __func_addr: | |
906e58ca | 7133 | .word func @ behave as if you saw a ARM_32 reloc. |
26079076 | 7134 | |
8f6277f5 PB |
7135 | (relocatable images) |
7136 | .arm | |
7137 | __func_from_arm: | |
7138 | ldr r12, __func_offset | |
7139 | add r12, r12, pc | |
7140 | bx r12 | |
7141 | __func_offset: | |
8029a119 | 7142 | .word func - . */ |
8f6277f5 PB |
7143 | |
7144 | #define ARM2THUMB_STATIC_GLUE_SIZE 12 | |
252b5132 RH |
7145 | static const insn32 a2t1_ldr_insn = 0xe59fc000; |
7146 | static const insn32 a2t2_bx_r12_insn = 0xe12fff1c; | |
7147 | static const insn32 a2t3_func_addr_insn = 0x00000001; | |
7148 | ||
26079076 PB |
7149 | #define ARM2THUMB_V5_STATIC_GLUE_SIZE 8 |
7150 | static const insn32 a2t1v5_ldr_insn = 0xe51ff004; | |
7151 | static const insn32 a2t2v5_func_addr_insn = 0x00000001; | |
7152 | ||
8f6277f5 PB |
7153 | #define ARM2THUMB_PIC_GLUE_SIZE 16 |
7154 | static const insn32 a2t1p_ldr_insn = 0xe59fc004; | |
7155 | static const insn32 a2t2p_add_pc_insn = 0xe08cc00f; | |
7156 | static const insn32 a2t3p_bx_r12_insn = 0xe12fff1c; | |
7157 | ||
07d6d2b8 | 7158 | /* Thumb->ARM: Thumb->(non-interworking aware) ARM |
252b5132 | 7159 | |
07d6d2b8 AM |
7160 | .thumb .thumb |
7161 | .align 2 .align 2 | |
7162 | __func_from_thumb: __func_from_thumb: | |
7163 | bx pc push {r6, lr} | |
7164 | nop ldr r6, __func_addr | |
7165 | .arm mov lr, pc | |
7166 | b func bx r6 | |
99059e56 RM |
7167 | .arm |
7168 | ;; back_to_thumb | |
7169 | ldmia r13! {r6, lr} | |
7170 | bx lr | |
7171 | __func_addr: | |
07d6d2b8 | 7172 | .word func */ |
252b5132 RH |
7173 | |
7174 | #define THUMB2ARM_GLUE_SIZE 8 | |
7175 | static const insn16 t2a1_bx_pc_insn = 0x4778; | |
7176 | static const insn16 t2a2_noop_insn = 0x46c0; | |
7177 | static const insn32 t2a3_b_insn = 0xea000000; | |
7178 | ||
c7b8f16e | 7179 | #define VFP11_ERRATUM_VENEER_SIZE 8 |
a504d23a LA |
7180 | #define STM32L4XX_ERRATUM_LDM_VENEER_SIZE 16 |
7181 | #define STM32L4XX_ERRATUM_VLDM_VENEER_SIZE 24 | |
c7b8f16e | 7182 | |
845b51d6 PB |
7183 | #define ARM_BX_VENEER_SIZE 12 |
7184 | static const insn32 armbx1_tst_insn = 0xe3100001; | |
7185 | static const insn32 armbx2_moveq_insn = 0x01a0f000; | |
7186 | static const insn32 armbx3_bx_insn = 0xe12fff10; | |
7187 | ||
7e392df6 | 7188 | #ifndef ELFARM_NABI_C_INCLUDED |
8029a119 NC |
7189 | static void |
7190 | arm_allocate_glue_section_space (bfd * abfd, bfd_size_type size, const char * name) | |
252b5132 RH |
7191 | { |
7192 | asection * s; | |
8029a119 | 7193 | bfd_byte * contents; |
252b5132 | 7194 | |
8029a119 | 7195 | if (size == 0) |
3e6b1042 DJ |
7196 | { |
7197 | /* Do not include empty glue sections in the output. */ | |
7198 | if (abfd != NULL) | |
7199 | { | |
3d4d4302 | 7200 | s = bfd_get_linker_section (abfd, name); |
3e6b1042 DJ |
7201 | if (s != NULL) |
7202 | s->flags |= SEC_EXCLUDE; | |
7203 | } | |
7204 | return; | |
7205 | } | |
252b5132 | 7206 | |
8029a119 | 7207 | BFD_ASSERT (abfd != NULL); |
252b5132 | 7208 | |
3d4d4302 | 7209 | s = bfd_get_linker_section (abfd, name); |
8029a119 | 7210 | BFD_ASSERT (s != NULL); |
252b5132 | 7211 | |
21d799b5 | 7212 | contents = (bfd_byte *) bfd_alloc (abfd, size); |
252b5132 | 7213 | |
8029a119 NC |
7214 | BFD_ASSERT (s->size == size); |
7215 | s->contents = contents; | |
7216 | } | |
906e58ca | 7217 | |
8029a119 NC |
7218 | bfd_boolean |
7219 | bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info * info) | |
7220 | { | |
7221 | struct elf32_arm_link_hash_table * globals; | |
906e58ca | 7222 | |
8029a119 NC |
7223 | globals = elf32_arm_hash_table (info); |
7224 | BFD_ASSERT (globals != NULL); | |
906e58ca | 7225 | |
8029a119 NC |
7226 | arm_allocate_glue_section_space (globals->bfd_of_glue_owner, |
7227 | globals->arm_glue_size, | |
7228 | ARM2THUMB_GLUE_SECTION_NAME); | |
906e58ca | 7229 | |
8029a119 NC |
7230 | arm_allocate_glue_section_space (globals->bfd_of_glue_owner, |
7231 | globals->thumb_glue_size, | |
7232 | THUMB2ARM_GLUE_SECTION_NAME); | |
252b5132 | 7233 | |
8029a119 NC |
7234 | arm_allocate_glue_section_space (globals->bfd_of_glue_owner, |
7235 | globals->vfp11_erratum_glue_size, | |
7236 | VFP11_ERRATUM_VENEER_SECTION_NAME); | |
845b51d6 | 7237 | |
a504d23a LA |
7238 | arm_allocate_glue_section_space (globals->bfd_of_glue_owner, |
7239 | globals->stm32l4xx_erratum_glue_size, | |
7240 | STM32L4XX_ERRATUM_VENEER_SECTION_NAME); | |
7241 | ||
8029a119 NC |
7242 | arm_allocate_glue_section_space (globals->bfd_of_glue_owner, |
7243 | globals->bx_glue_size, | |
845b51d6 PB |
7244 | ARM_BX_GLUE_SECTION_NAME); |
7245 | ||
b34976b6 | 7246 | return TRUE; |
252b5132 RH |
7247 | } |
7248 | ||
a4fd1a8e | 7249 | /* Allocate space and symbols for calling a Thumb function from Arm mode. |
906e58ca NC |
7250 | returns the symbol identifying the stub. */ |
7251 | ||
a4fd1a8e | 7252 | static struct elf_link_hash_entry * |
57e8b36a NC |
7253 | record_arm_to_thumb_glue (struct bfd_link_info * link_info, |
7254 | struct elf_link_hash_entry * h) | |
252b5132 RH |
7255 | { |
7256 | const char * name = h->root.root.string; | |
63b0f745 | 7257 | asection * s; |
252b5132 RH |
7258 | char * tmp_name; |
7259 | struct elf_link_hash_entry * myh; | |
14a793b2 | 7260 | struct bfd_link_hash_entry * bh; |
252b5132 | 7261 | struct elf32_arm_link_hash_table * globals; |
dc810e39 | 7262 | bfd_vma val; |
2f475487 | 7263 | bfd_size_type size; |
252b5132 RH |
7264 | |
7265 | globals = elf32_arm_hash_table (link_info); | |
252b5132 RH |
7266 | BFD_ASSERT (globals != NULL); |
7267 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
7268 | ||
3d4d4302 | 7269 | s = bfd_get_linker_section |
252b5132 RH |
7270 | (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME); |
7271 | ||
252b5132 RH |
7272 | BFD_ASSERT (s != NULL); |
7273 | ||
21d799b5 | 7274 | tmp_name = (char *) bfd_malloc ((bfd_size_type) strlen (name) |
99059e56 | 7275 | + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1); |
252b5132 RH |
7276 | |
7277 | BFD_ASSERT (tmp_name); | |
7278 | ||
7279 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); | |
7280 | ||
7281 | myh = elf_link_hash_lookup | |
b34976b6 | 7282 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 RH |
7283 | |
7284 | if (myh != NULL) | |
7285 | { | |
9b485d32 | 7286 | /* We've already seen this guy. */ |
252b5132 | 7287 | free (tmp_name); |
a4fd1a8e | 7288 | return myh; |
252b5132 RH |
7289 | } |
7290 | ||
57e8b36a NC |
7291 | /* The only trick here is using hash_table->arm_glue_size as the value. |
7292 | Even though the section isn't allocated yet, this is where we will be | |
3dccd7b7 DJ |
7293 | putting it. The +1 on the value marks that the stub has not been |
7294 | output yet - not that it is a Thumb function. */ | |
14a793b2 | 7295 | bh = NULL; |
dc810e39 AM |
7296 | val = globals->arm_glue_size + 1; |
7297 | _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner, | |
7298 | tmp_name, BSF_GLOBAL, s, val, | |
b34976b6 | 7299 | NULL, TRUE, FALSE, &bh); |
252b5132 | 7300 | |
b7693d02 DJ |
7301 | myh = (struct elf_link_hash_entry *) bh; |
7302 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
7303 | myh->forced_local = 1; | |
7304 | ||
252b5132 RH |
7305 | free (tmp_name); |
7306 | ||
0e1862bb L |
7307 | if (bfd_link_pic (link_info) |
7308 | || globals->root.is_relocatable_executable | |
27e55c4d | 7309 | || globals->pic_veneer) |
2f475487 | 7310 | size = ARM2THUMB_PIC_GLUE_SIZE; |
26079076 PB |
7311 | else if (globals->use_blx) |
7312 | size = ARM2THUMB_V5_STATIC_GLUE_SIZE; | |
8f6277f5 | 7313 | else |
2f475487 AM |
7314 | size = ARM2THUMB_STATIC_GLUE_SIZE; |
7315 | ||
7316 | s->size += size; | |
7317 | globals->arm_glue_size += size; | |
252b5132 | 7318 | |
a4fd1a8e | 7319 | return myh; |
252b5132 RH |
7320 | } |
7321 | ||
845b51d6 PB |
7322 | /* Allocate space for ARMv4 BX veneers. */ |
7323 | ||
7324 | static void | |
7325 | record_arm_bx_glue (struct bfd_link_info * link_info, int reg) | |
7326 | { | |
7327 | asection * s; | |
7328 | struct elf32_arm_link_hash_table *globals; | |
7329 | char *tmp_name; | |
7330 | struct elf_link_hash_entry *myh; | |
7331 | struct bfd_link_hash_entry *bh; | |
7332 | bfd_vma val; | |
7333 | ||
7334 | /* BX PC does not need a veneer. */ | |
7335 | if (reg == 15) | |
7336 | return; | |
7337 | ||
7338 | globals = elf32_arm_hash_table (link_info); | |
845b51d6 PB |
7339 | BFD_ASSERT (globals != NULL); |
7340 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
7341 | ||
7342 | /* Check if this veneer has already been allocated. */ | |
7343 | if (globals->bx_glue_offset[reg]) | |
7344 | return; | |
7345 | ||
3d4d4302 | 7346 | s = bfd_get_linker_section |
845b51d6 PB |
7347 | (globals->bfd_of_glue_owner, ARM_BX_GLUE_SECTION_NAME); |
7348 | ||
7349 | BFD_ASSERT (s != NULL); | |
7350 | ||
7351 | /* Add symbol for veneer. */ | |
21d799b5 NC |
7352 | tmp_name = (char *) |
7353 | bfd_malloc ((bfd_size_type) strlen (ARM_BX_GLUE_ENTRY_NAME) + 1); | |
906e58ca | 7354 | |
845b51d6 | 7355 | BFD_ASSERT (tmp_name); |
906e58ca | 7356 | |
845b51d6 | 7357 | sprintf (tmp_name, ARM_BX_GLUE_ENTRY_NAME, reg); |
906e58ca | 7358 | |
845b51d6 PB |
7359 | myh = elf_link_hash_lookup |
7360 | (&(globals)->root, tmp_name, FALSE, FALSE, FALSE); | |
906e58ca | 7361 | |
845b51d6 | 7362 | BFD_ASSERT (myh == NULL); |
906e58ca | 7363 | |
845b51d6 PB |
7364 | bh = NULL; |
7365 | val = globals->bx_glue_size; | |
7366 | _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner, | |
99059e56 RM |
7367 | tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val, |
7368 | NULL, TRUE, FALSE, &bh); | |
845b51d6 PB |
7369 | |
7370 | myh = (struct elf_link_hash_entry *) bh; | |
7371 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
7372 | myh->forced_local = 1; | |
7373 | ||
7374 | s->size += ARM_BX_VENEER_SIZE; | |
7375 | globals->bx_glue_offset[reg] = globals->bx_glue_size | 2; | |
7376 | globals->bx_glue_size += ARM_BX_VENEER_SIZE; | |
7377 | } | |
7378 | ||
7379 | ||
c7b8f16e JB |
7380 | /* Add an entry to the code/data map for section SEC. */ |
7381 | ||
7382 | static void | |
7383 | elf32_arm_section_map_add (asection *sec, char type, bfd_vma vma) | |
7384 | { | |
7385 | struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec); | |
7386 | unsigned int newidx; | |
906e58ca | 7387 | |
c7b8f16e JB |
7388 | if (sec_data->map == NULL) |
7389 | { | |
21d799b5 | 7390 | sec_data->map = (elf32_arm_section_map *) |
99059e56 | 7391 | bfd_malloc (sizeof (elf32_arm_section_map)); |
c7b8f16e JB |
7392 | sec_data->mapcount = 0; |
7393 | sec_data->mapsize = 1; | |
7394 | } | |
906e58ca | 7395 | |
c7b8f16e | 7396 | newidx = sec_data->mapcount++; |
906e58ca | 7397 | |
c7b8f16e JB |
7398 | if (sec_data->mapcount > sec_data->mapsize) |
7399 | { | |
7400 | sec_data->mapsize *= 2; | |
21d799b5 | 7401 | sec_data->map = (elf32_arm_section_map *) |
99059e56 RM |
7402 | bfd_realloc_or_free (sec_data->map, sec_data->mapsize |
7403 | * sizeof (elf32_arm_section_map)); | |
515ef31d NC |
7404 | } |
7405 | ||
7406 | if (sec_data->map) | |
7407 | { | |
7408 | sec_data->map[newidx].vma = vma; | |
7409 | sec_data->map[newidx].type = type; | |
c7b8f16e | 7410 | } |
c7b8f16e JB |
7411 | } |
7412 | ||
7413 | ||
7414 | /* Record information about a VFP11 denorm-erratum veneer. Only ARM-mode | |
7415 | veneers are handled for now. */ | |
7416 | ||
7417 | static bfd_vma | |
7418 | record_vfp11_erratum_veneer (struct bfd_link_info *link_info, | |
99059e56 RM |
7419 | elf32_vfp11_erratum_list *branch, |
7420 | bfd *branch_bfd, | |
7421 | asection *branch_sec, | |
7422 | unsigned int offset) | |
c7b8f16e JB |
7423 | { |
7424 | asection *s; | |
7425 | struct elf32_arm_link_hash_table *hash_table; | |
7426 | char *tmp_name; | |
7427 | struct elf_link_hash_entry *myh; | |
7428 | struct bfd_link_hash_entry *bh; | |
7429 | bfd_vma val; | |
7430 | struct _arm_elf_section_data *sec_data; | |
c7b8f16e | 7431 | elf32_vfp11_erratum_list *newerr; |
906e58ca | 7432 | |
c7b8f16e | 7433 | hash_table = elf32_arm_hash_table (link_info); |
c7b8f16e JB |
7434 | BFD_ASSERT (hash_table != NULL); |
7435 | BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL); | |
906e58ca | 7436 | |
3d4d4302 | 7437 | s = bfd_get_linker_section |
c7b8f16e | 7438 | (hash_table->bfd_of_glue_owner, VFP11_ERRATUM_VENEER_SECTION_NAME); |
906e58ca | 7439 | |
c7b8f16e | 7440 | sec_data = elf32_arm_section_data (s); |
906e58ca | 7441 | |
c7b8f16e | 7442 | BFD_ASSERT (s != NULL); |
906e58ca | 7443 | |
21d799b5 | 7444 | tmp_name = (char *) bfd_malloc ((bfd_size_type) strlen |
99059e56 | 7445 | (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10); |
906e58ca | 7446 | |
c7b8f16e | 7447 | BFD_ASSERT (tmp_name); |
906e58ca | 7448 | |
c7b8f16e JB |
7449 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME, |
7450 | hash_table->num_vfp11_fixes); | |
906e58ca | 7451 | |
c7b8f16e JB |
7452 | myh = elf_link_hash_lookup |
7453 | (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE); | |
906e58ca | 7454 | |
c7b8f16e | 7455 | BFD_ASSERT (myh == NULL); |
906e58ca | 7456 | |
c7b8f16e JB |
7457 | bh = NULL; |
7458 | val = hash_table->vfp11_erratum_glue_size; | |
7459 | _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, | |
99059e56 RM |
7460 | tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val, |
7461 | NULL, TRUE, FALSE, &bh); | |
c7b8f16e JB |
7462 | |
7463 | myh = (struct elf_link_hash_entry *) bh; | |
7464 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
7465 | myh->forced_local = 1; | |
7466 | ||
7467 | /* Link veneer back to calling location. */ | |
c7e2358a | 7468 | sec_data->erratumcount += 1; |
21d799b5 NC |
7469 | newerr = (elf32_vfp11_erratum_list *) |
7470 | bfd_zmalloc (sizeof (elf32_vfp11_erratum_list)); | |
906e58ca | 7471 | |
c7b8f16e JB |
7472 | newerr->type = VFP11_ERRATUM_ARM_VENEER; |
7473 | newerr->vma = -1; | |
7474 | newerr->u.v.branch = branch; | |
7475 | newerr->u.v.id = hash_table->num_vfp11_fixes; | |
7476 | branch->u.b.veneer = newerr; | |
7477 | ||
7478 | newerr->next = sec_data->erratumlist; | |
7479 | sec_data->erratumlist = newerr; | |
7480 | ||
7481 | /* A symbol for the return from the veneer. */ | |
7482 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r", | |
7483 | hash_table->num_vfp11_fixes); | |
7484 | ||
7485 | myh = elf_link_hash_lookup | |
7486 | (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE); | |
906e58ca | 7487 | |
c7b8f16e JB |
7488 | if (myh != NULL) |
7489 | abort (); | |
7490 | ||
7491 | bh = NULL; | |
7492 | val = offset + 4; | |
7493 | _bfd_generic_link_add_one_symbol (link_info, branch_bfd, tmp_name, BSF_LOCAL, | |
7494 | branch_sec, val, NULL, TRUE, FALSE, &bh); | |
906e58ca | 7495 | |
c7b8f16e JB |
7496 | myh = (struct elf_link_hash_entry *) bh; |
7497 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
7498 | myh->forced_local = 1; | |
7499 | ||
7500 | free (tmp_name); | |
906e58ca | 7501 | |
c7b8f16e JB |
7502 | /* Generate a mapping symbol for the veneer section, and explicitly add an |
7503 | entry for that symbol to the code/data map for the section. */ | |
7504 | if (hash_table->vfp11_erratum_glue_size == 0) | |
7505 | { | |
7506 | bh = NULL; | |
7507 | /* FIXME: Creates an ARM symbol. Thumb mode will need attention if it | |
99059e56 | 7508 | ever requires this erratum fix. */ |
c7b8f16e JB |
7509 | _bfd_generic_link_add_one_symbol (link_info, |
7510 | hash_table->bfd_of_glue_owner, "$a", | |
7511 | BSF_LOCAL, s, 0, NULL, | |
99059e56 | 7512 | TRUE, FALSE, &bh); |
c7b8f16e JB |
7513 | |
7514 | myh = (struct elf_link_hash_entry *) bh; | |
7515 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
7516 | myh->forced_local = 1; | |
906e58ca | 7517 | |
c7b8f16e | 7518 | /* The elf32_arm_init_maps function only cares about symbols from input |
99059e56 RM |
7519 | BFDs. We must make a note of this generated mapping symbol |
7520 | ourselves so that code byteswapping works properly in | |
7521 | elf32_arm_write_section. */ | |
c7b8f16e JB |
7522 | elf32_arm_section_map_add (s, 'a', 0); |
7523 | } | |
906e58ca | 7524 | |
c7b8f16e JB |
7525 | s->size += VFP11_ERRATUM_VENEER_SIZE; |
7526 | hash_table->vfp11_erratum_glue_size += VFP11_ERRATUM_VENEER_SIZE; | |
7527 | hash_table->num_vfp11_fixes++; | |
906e58ca | 7528 | |
c7b8f16e JB |
7529 | /* The offset of the veneer. */ |
7530 | return val; | |
7531 | } | |
7532 | ||
a504d23a LA |
7533 | /* Record information about a STM32L4XX STM erratum veneer. Only THUMB-mode |
7534 | veneers need to be handled because used only in Cortex-M. */ | |
7535 | ||
7536 | static bfd_vma | |
7537 | record_stm32l4xx_erratum_veneer (struct bfd_link_info *link_info, | |
7538 | elf32_stm32l4xx_erratum_list *branch, | |
7539 | bfd *branch_bfd, | |
7540 | asection *branch_sec, | |
7541 | unsigned int offset, | |
7542 | bfd_size_type veneer_size) | |
7543 | { | |
7544 | asection *s; | |
7545 | struct elf32_arm_link_hash_table *hash_table; | |
7546 | char *tmp_name; | |
7547 | struct elf_link_hash_entry *myh; | |
7548 | struct bfd_link_hash_entry *bh; | |
7549 | bfd_vma val; | |
7550 | struct _arm_elf_section_data *sec_data; | |
7551 | elf32_stm32l4xx_erratum_list *newerr; | |
7552 | ||
7553 | hash_table = elf32_arm_hash_table (link_info); | |
7554 | BFD_ASSERT (hash_table != NULL); | |
7555 | BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL); | |
7556 | ||
7557 | s = bfd_get_linker_section | |
7558 | (hash_table->bfd_of_glue_owner, STM32L4XX_ERRATUM_VENEER_SECTION_NAME); | |
7559 | ||
7560 | BFD_ASSERT (s != NULL); | |
7561 | ||
7562 | sec_data = elf32_arm_section_data (s); | |
7563 | ||
7564 | tmp_name = (char *) bfd_malloc ((bfd_size_type) strlen | |
7565 | (STM32L4XX_ERRATUM_VENEER_ENTRY_NAME) + 10); | |
7566 | ||
7567 | BFD_ASSERT (tmp_name); | |
7568 | ||
7569 | sprintf (tmp_name, STM32L4XX_ERRATUM_VENEER_ENTRY_NAME, | |
7570 | hash_table->num_stm32l4xx_fixes); | |
7571 | ||
7572 | myh = elf_link_hash_lookup | |
7573 | (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE); | |
7574 | ||
7575 | BFD_ASSERT (myh == NULL); | |
7576 | ||
7577 | bh = NULL; | |
7578 | val = hash_table->stm32l4xx_erratum_glue_size; | |
7579 | _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, | |
7580 | tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val, | |
7581 | NULL, TRUE, FALSE, &bh); | |
7582 | ||
7583 | myh = (struct elf_link_hash_entry *) bh; | |
7584 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
7585 | myh->forced_local = 1; | |
7586 | ||
7587 | /* Link veneer back to calling location. */ | |
7588 | sec_data->stm32l4xx_erratumcount += 1; | |
7589 | newerr = (elf32_stm32l4xx_erratum_list *) | |
7590 | bfd_zmalloc (sizeof (elf32_stm32l4xx_erratum_list)); | |
7591 | ||
7592 | newerr->type = STM32L4XX_ERRATUM_VENEER; | |
7593 | newerr->vma = -1; | |
7594 | newerr->u.v.branch = branch; | |
7595 | newerr->u.v.id = hash_table->num_stm32l4xx_fixes; | |
7596 | branch->u.b.veneer = newerr; | |
7597 | ||
7598 | newerr->next = sec_data->stm32l4xx_erratumlist; | |
7599 | sec_data->stm32l4xx_erratumlist = newerr; | |
7600 | ||
7601 | /* A symbol for the return from the veneer. */ | |
7602 | sprintf (tmp_name, STM32L4XX_ERRATUM_VENEER_ENTRY_NAME "_r", | |
7603 | hash_table->num_stm32l4xx_fixes); | |
7604 | ||
7605 | myh = elf_link_hash_lookup | |
7606 | (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE); | |
7607 | ||
7608 | if (myh != NULL) | |
7609 | abort (); | |
7610 | ||
7611 | bh = NULL; | |
7612 | val = offset + 4; | |
7613 | _bfd_generic_link_add_one_symbol (link_info, branch_bfd, tmp_name, BSF_LOCAL, | |
7614 | branch_sec, val, NULL, TRUE, FALSE, &bh); | |
7615 | ||
7616 | myh = (struct elf_link_hash_entry *) bh; | |
7617 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
7618 | myh->forced_local = 1; | |
7619 | ||
7620 | free (tmp_name); | |
7621 | ||
7622 | /* Generate a mapping symbol for the veneer section, and explicitly add an | |
7623 | entry for that symbol to the code/data map for the section. */ | |
7624 | if (hash_table->stm32l4xx_erratum_glue_size == 0) | |
7625 | { | |
7626 | bh = NULL; | |
7627 | /* Creates a THUMB symbol since there is no other choice. */ | |
7628 | _bfd_generic_link_add_one_symbol (link_info, | |
7629 | hash_table->bfd_of_glue_owner, "$t", | |
7630 | BSF_LOCAL, s, 0, NULL, | |
7631 | TRUE, FALSE, &bh); | |
7632 | ||
7633 | myh = (struct elf_link_hash_entry *) bh; | |
7634 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
7635 | myh->forced_local = 1; | |
7636 | ||
7637 | /* The elf32_arm_init_maps function only cares about symbols from input | |
7638 | BFDs. We must make a note of this generated mapping symbol | |
7639 | ourselves so that code byteswapping works properly in | |
7640 | elf32_arm_write_section. */ | |
7641 | elf32_arm_section_map_add (s, 't', 0); | |
7642 | } | |
7643 | ||
7644 | s->size += veneer_size; | |
7645 | hash_table->stm32l4xx_erratum_glue_size += veneer_size; | |
7646 | hash_table->num_stm32l4xx_fixes++; | |
7647 | ||
7648 | /* The offset of the veneer. */ | |
7649 | return val; | |
7650 | } | |
7651 | ||
8029a119 | 7652 | #define ARM_GLUE_SECTION_FLAGS \ |
3e6b1042 DJ |
7653 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_CODE \ |
7654 | | SEC_READONLY | SEC_LINKER_CREATED) | |
8029a119 NC |
7655 | |
7656 | /* Create a fake section for use by the ARM backend of the linker. */ | |
7657 | ||
7658 | static bfd_boolean | |
7659 | arm_make_glue_section (bfd * abfd, const char * name) | |
7660 | { | |
7661 | asection * sec; | |
7662 | ||
3d4d4302 | 7663 | sec = bfd_get_linker_section (abfd, name); |
8029a119 NC |
7664 | if (sec != NULL) |
7665 | /* Already made. */ | |
7666 | return TRUE; | |
7667 | ||
3d4d4302 | 7668 | sec = bfd_make_section_anyway_with_flags (abfd, name, ARM_GLUE_SECTION_FLAGS); |
8029a119 NC |
7669 | |
7670 | if (sec == NULL | |
7671 | || !bfd_set_section_alignment (abfd, sec, 2)) | |
7672 | return FALSE; | |
7673 | ||
7674 | /* Set the gc mark to prevent the section from being removed by garbage | |
7675 | collection, despite the fact that no relocs refer to this section. */ | |
7676 | sec->gc_mark = 1; | |
7677 | ||
7678 | return TRUE; | |
7679 | } | |
7680 | ||
1db37fe6 YG |
7681 | /* Set size of .plt entries. This function is called from the |
7682 | linker scripts in ld/emultempl/{armelf}.em. */ | |
7683 | ||
7684 | void | |
7685 | bfd_elf32_arm_use_long_plt (void) | |
7686 | { | |
7687 | elf32_arm_use_long_plt_entry = TRUE; | |
7688 | } | |
7689 | ||
8afb0e02 NC |
7690 | /* Add the glue sections to ABFD. This function is called from the |
7691 | linker scripts in ld/emultempl/{armelf}.em. */ | |
9b485d32 | 7692 | |
b34976b6 | 7693 | bfd_boolean |
57e8b36a NC |
7694 | bfd_elf32_arm_add_glue_sections_to_bfd (bfd *abfd, |
7695 | struct bfd_link_info *info) | |
252b5132 | 7696 | { |
a504d23a LA |
7697 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (info); |
7698 | bfd_boolean dostm32l4xx = globals | |
7699 | && globals->stm32l4xx_fix != BFD_ARM_STM32L4XX_FIX_NONE; | |
7700 | bfd_boolean addglue; | |
7701 | ||
8afb0e02 NC |
7702 | /* If we are only performing a partial |
7703 | link do not bother adding the glue. */ | |
0e1862bb | 7704 | if (bfd_link_relocatable (info)) |
b34976b6 | 7705 | return TRUE; |
252b5132 | 7706 | |
a504d23a | 7707 | addglue = arm_make_glue_section (abfd, ARM2THUMB_GLUE_SECTION_NAME) |
8029a119 NC |
7708 | && arm_make_glue_section (abfd, THUMB2ARM_GLUE_SECTION_NAME) |
7709 | && arm_make_glue_section (abfd, VFP11_ERRATUM_VENEER_SECTION_NAME) | |
7710 | && arm_make_glue_section (abfd, ARM_BX_GLUE_SECTION_NAME); | |
a504d23a LA |
7711 | |
7712 | if (!dostm32l4xx) | |
7713 | return addglue; | |
7714 | ||
7715 | return addglue | |
7716 | && arm_make_glue_section (abfd, STM32L4XX_ERRATUM_VENEER_SECTION_NAME); | |
8afb0e02 NC |
7717 | } |
7718 | ||
daa4adae TP |
7719 | /* Mark output sections of veneers needing a dedicated one with SEC_KEEP. This |
7720 | ensures they are not marked for deletion by | |
7721 | strip_excluded_output_sections () when veneers are going to be created | |
7722 | later. Not doing so would trigger assert on empty section size in | |
7723 | lang_size_sections_1 (). */ | |
7724 | ||
7725 | void | |
7726 | bfd_elf32_arm_keep_private_stub_output_sections (struct bfd_link_info *info) | |
7727 | { | |
7728 | enum elf32_arm_stub_type stub_type; | |
7729 | ||
7730 | /* If we are only performing a partial | |
7731 | link do not bother adding the glue. */ | |
7732 | if (bfd_link_relocatable (info)) | |
7733 | return; | |
7734 | ||
7735 | for (stub_type = arm_stub_none + 1; stub_type < max_stub_type; stub_type++) | |
7736 | { | |
7737 | asection *out_sec; | |
7738 | const char *out_sec_name; | |
7739 | ||
7740 | if (!arm_dedicated_stub_output_section_required (stub_type)) | |
7741 | continue; | |
7742 | ||
7743 | out_sec_name = arm_dedicated_stub_output_section_name (stub_type); | |
7744 | out_sec = bfd_get_section_by_name (info->output_bfd, out_sec_name); | |
7745 | if (out_sec != NULL) | |
7746 | out_sec->flags |= SEC_KEEP; | |
7747 | } | |
7748 | } | |
7749 | ||
8afb0e02 NC |
7750 | /* Select a BFD to be used to hold the sections used by the glue code. |
7751 | This function is called from the linker scripts in ld/emultempl/ | |
8029a119 | 7752 | {armelf/pe}.em. */ |
8afb0e02 | 7753 | |
b34976b6 | 7754 | bfd_boolean |
57e8b36a | 7755 | bfd_elf32_arm_get_bfd_for_interworking (bfd *abfd, struct bfd_link_info *info) |
8afb0e02 NC |
7756 | { |
7757 | struct elf32_arm_link_hash_table *globals; | |
7758 | ||
7759 | /* If we are only performing a partial link | |
7760 | do not bother getting a bfd to hold the glue. */ | |
0e1862bb | 7761 | if (bfd_link_relocatable (info)) |
b34976b6 | 7762 | return TRUE; |
8afb0e02 | 7763 | |
b7693d02 DJ |
7764 | /* Make sure we don't attach the glue sections to a dynamic object. */ |
7765 | BFD_ASSERT (!(abfd->flags & DYNAMIC)); | |
7766 | ||
8afb0e02 | 7767 | globals = elf32_arm_hash_table (info); |
8afb0e02 NC |
7768 | BFD_ASSERT (globals != NULL); |
7769 | ||
7770 | if (globals->bfd_of_glue_owner != NULL) | |
b34976b6 | 7771 | return TRUE; |
8afb0e02 | 7772 | |
252b5132 RH |
7773 | /* Save the bfd for later use. */ |
7774 | globals->bfd_of_glue_owner = abfd; | |
cedb70c5 | 7775 | |
b34976b6 | 7776 | return TRUE; |
252b5132 RH |
7777 | } |
7778 | ||
906e58ca NC |
7779 | static void |
7780 | check_use_blx (struct elf32_arm_link_hash_table *globals) | |
39b41c9c | 7781 | { |
2de70689 MGD |
7782 | int cpu_arch; |
7783 | ||
b38cadfb | 7784 | cpu_arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, |
2de70689 MGD |
7785 | Tag_CPU_arch); |
7786 | ||
7787 | if (globals->fix_arm1176) | |
7788 | { | |
7789 | if (cpu_arch == TAG_CPU_ARCH_V6T2 || cpu_arch > TAG_CPU_ARCH_V6K) | |
7790 | globals->use_blx = 1; | |
7791 | } | |
7792 | else | |
7793 | { | |
7794 | if (cpu_arch > TAG_CPU_ARCH_V4T) | |
7795 | globals->use_blx = 1; | |
7796 | } | |
39b41c9c PB |
7797 | } |
7798 | ||
b34976b6 | 7799 | bfd_boolean |
57e8b36a | 7800 | bfd_elf32_arm_process_before_allocation (bfd *abfd, |
d504ffc8 | 7801 | struct bfd_link_info *link_info) |
252b5132 RH |
7802 | { |
7803 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 7804 | Elf_Internal_Rela *internal_relocs = NULL; |
252b5132 RH |
7805 | Elf_Internal_Rela *irel, *irelend; |
7806 | bfd_byte *contents = NULL; | |
252b5132 RH |
7807 | |
7808 | asection *sec; | |
7809 | struct elf32_arm_link_hash_table *globals; | |
7810 | ||
7811 | /* If we are only performing a partial link do not bother | |
7812 | to construct any glue. */ | |
0e1862bb | 7813 | if (bfd_link_relocatable (link_info)) |
b34976b6 | 7814 | return TRUE; |
252b5132 | 7815 | |
39ce1a6a NC |
7816 | /* Here we have a bfd that is to be included on the link. We have a |
7817 | hook to do reloc rummaging, before section sizes are nailed down. */ | |
252b5132 | 7818 | globals = elf32_arm_hash_table (link_info); |
252b5132 | 7819 | BFD_ASSERT (globals != NULL); |
39ce1a6a NC |
7820 | |
7821 | check_use_blx (globals); | |
252b5132 | 7822 | |
d504ffc8 | 7823 | if (globals->byteswap_code && !bfd_big_endian (abfd)) |
e489d0ae | 7824 | { |
90b6238f | 7825 | _bfd_error_handler (_("%pB: BE8 images only valid in big-endian mode"), |
d003868e | 7826 | abfd); |
e489d0ae PB |
7827 | return FALSE; |
7828 | } | |
f21f3fe0 | 7829 | |
39ce1a6a NC |
7830 | /* PR 5398: If we have not decided to include any loadable sections in |
7831 | the output then we will not have a glue owner bfd. This is OK, it | |
7832 | just means that there is nothing else for us to do here. */ | |
7833 | if (globals->bfd_of_glue_owner == NULL) | |
7834 | return TRUE; | |
7835 | ||
252b5132 RH |
7836 | /* Rummage around all the relocs and map the glue vectors. */ |
7837 | sec = abfd->sections; | |
7838 | ||
7839 | if (sec == NULL) | |
b34976b6 | 7840 | return TRUE; |
252b5132 RH |
7841 | |
7842 | for (; sec != NULL; sec = sec->next) | |
7843 | { | |
7844 | if (sec->reloc_count == 0) | |
7845 | continue; | |
7846 | ||
2f475487 AM |
7847 | if ((sec->flags & SEC_EXCLUDE) != 0) |
7848 | continue; | |
7849 | ||
0ffa91dd | 7850 | symtab_hdr = & elf_symtab_hdr (abfd); |
252b5132 | 7851 | |
9b485d32 | 7852 | /* Load the relocs. */ |
6cdc0ccc | 7853 | internal_relocs |
906e58ca | 7854 | = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, FALSE); |
252b5132 | 7855 | |
6cdc0ccc AM |
7856 | if (internal_relocs == NULL) |
7857 | goto error_return; | |
252b5132 | 7858 | |
6cdc0ccc AM |
7859 | irelend = internal_relocs + sec->reloc_count; |
7860 | for (irel = internal_relocs; irel < irelend; irel++) | |
252b5132 RH |
7861 | { |
7862 | long r_type; | |
7863 | unsigned long r_index; | |
252b5132 RH |
7864 | |
7865 | struct elf_link_hash_entry *h; | |
7866 | ||
7867 | r_type = ELF32_R_TYPE (irel->r_info); | |
7868 | r_index = ELF32_R_SYM (irel->r_info); | |
7869 | ||
9b485d32 | 7870 | /* These are the only relocation types we care about. */ |
ba96a88f | 7871 | if ( r_type != R_ARM_PC24 |
845b51d6 | 7872 | && (r_type != R_ARM_V4BX || globals->fix_v4bx < 2)) |
252b5132 RH |
7873 | continue; |
7874 | ||
7875 | /* Get the section contents if we haven't done so already. */ | |
7876 | if (contents == NULL) | |
7877 | { | |
7878 | /* Get cached copy if it exists. */ | |
7879 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
7880 | contents = elf_section_data (sec)->this_hdr.contents; | |
7881 | else | |
7882 | { | |
7883 | /* Go get them off disk. */ | |
57e8b36a | 7884 | if (! bfd_malloc_and_get_section (abfd, sec, &contents)) |
252b5132 RH |
7885 | goto error_return; |
7886 | } | |
7887 | } | |
7888 | ||
845b51d6 PB |
7889 | if (r_type == R_ARM_V4BX) |
7890 | { | |
7891 | int reg; | |
7892 | ||
7893 | reg = bfd_get_32 (abfd, contents + irel->r_offset) & 0xf; | |
7894 | record_arm_bx_glue (link_info, reg); | |
7895 | continue; | |
7896 | } | |
7897 | ||
a7c10850 | 7898 | /* If the relocation is not against a symbol it cannot concern us. */ |
252b5132 RH |
7899 | h = NULL; |
7900 | ||
9b485d32 | 7901 | /* We don't care about local symbols. */ |
252b5132 RH |
7902 | if (r_index < symtab_hdr->sh_info) |
7903 | continue; | |
7904 | ||
9b485d32 | 7905 | /* This is an external symbol. */ |
252b5132 RH |
7906 | r_index -= symtab_hdr->sh_info; |
7907 | h = (struct elf_link_hash_entry *) | |
7908 | elf_sym_hashes (abfd)[r_index]; | |
7909 | ||
7910 | /* If the relocation is against a static symbol it must be within | |
7911 | the current section and so cannot be a cross ARM/Thumb relocation. */ | |
7912 | if (h == NULL) | |
7913 | continue; | |
7914 | ||
d504ffc8 DJ |
7915 | /* If the call will go through a PLT entry then we do not need |
7916 | glue. */ | |
362d30a1 | 7917 | if (globals->root.splt != NULL && h->plt.offset != (bfd_vma) -1) |
b7693d02 DJ |
7918 | continue; |
7919 | ||
252b5132 RH |
7920 | switch (r_type) |
7921 | { | |
7922 | case R_ARM_PC24: | |
7923 | /* This one is a call from arm code. We need to look up | |
99059e56 RM |
7924 | the target of the call. If it is a thumb target, we |
7925 | insert glue. */ | |
39d911fc TP |
7926 | if (ARM_GET_SYM_BRANCH_TYPE (h->target_internal) |
7927 | == ST_BRANCH_TO_THUMB) | |
252b5132 RH |
7928 | record_arm_to_thumb_glue (link_info, h); |
7929 | break; | |
7930 | ||
252b5132 | 7931 | default: |
c6596c5e | 7932 | abort (); |
252b5132 RH |
7933 | } |
7934 | } | |
6cdc0ccc AM |
7935 | |
7936 | if (contents != NULL | |
7937 | && elf_section_data (sec)->this_hdr.contents != contents) | |
7938 | free (contents); | |
7939 | contents = NULL; | |
7940 | ||
7941 | if (internal_relocs != NULL | |
7942 | && elf_section_data (sec)->relocs != internal_relocs) | |
7943 | free (internal_relocs); | |
7944 | internal_relocs = NULL; | |
252b5132 RH |
7945 | } |
7946 | ||
b34976b6 | 7947 | return TRUE; |
9a5aca8c | 7948 | |
252b5132 | 7949 | error_return: |
6cdc0ccc AM |
7950 | if (contents != NULL |
7951 | && elf_section_data (sec)->this_hdr.contents != contents) | |
7952 | free (contents); | |
7953 | if (internal_relocs != NULL | |
7954 | && elf_section_data (sec)->relocs != internal_relocs) | |
7955 | free (internal_relocs); | |
9a5aca8c | 7956 | |
b34976b6 | 7957 | return FALSE; |
252b5132 | 7958 | } |
7e392df6 | 7959 | #endif |
252b5132 | 7960 | |
eb043451 | 7961 | |
c7b8f16e JB |
7962 | /* Initialise maps of ARM/Thumb/data for input BFDs. */ |
7963 | ||
7964 | void | |
7965 | bfd_elf32_arm_init_maps (bfd *abfd) | |
7966 | { | |
7967 | Elf_Internal_Sym *isymbuf; | |
7968 | Elf_Internal_Shdr *hdr; | |
7969 | unsigned int i, localsyms; | |
7970 | ||
af1f4419 NC |
7971 | /* PR 7093: Make sure that we are dealing with an arm elf binary. */ |
7972 | if (! is_arm_elf (abfd)) | |
7973 | return; | |
7974 | ||
c7b8f16e JB |
7975 | if ((abfd->flags & DYNAMIC) != 0) |
7976 | return; | |
7977 | ||
0ffa91dd | 7978 | hdr = & elf_symtab_hdr (abfd); |
c7b8f16e JB |
7979 | localsyms = hdr->sh_info; |
7980 | ||
7981 | /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field | |
7982 | should contain the number of local symbols, which should come before any | |
7983 | global symbols. Mapping symbols are always local. */ | |
7984 | isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, | |
7985 | NULL); | |
7986 | ||
7987 | /* No internal symbols read? Skip this BFD. */ | |
7988 | if (isymbuf == NULL) | |
7989 | return; | |
7990 | ||
7991 | for (i = 0; i < localsyms; i++) | |
7992 | { | |
7993 | Elf_Internal_Sym *isym = &isymbuf[i]; | |
7994 | asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
7995 | const char *name; | |
906e58ca | 7996 | |
c7b8f16e | 7997 | if (sec != NULL |
99059e56 RM |
7998 | && ELF_ST_BIND (isym->st_info) == STB_LOCAL) |
7999 | { | |
8000 | name = bfd_elf_string_from_elf_section (abfd, | |
8001 | hdr->sh_link, isym->st_name); | |
906e58ca | 8002 | |
99059e56 | 8003 | if (bfd_is_arm_special_symbol_name (name, |
c7b8f16e | 8004 | BFD_ARM_SPECIAL_SYM_TYPE_MAP)) |
99059e56 RM |
8005 | elf32_arm_section_map_add (sec, name[1], isym->st_value); |
8006 | } | |
c7b8f16e JB |
8007 | } |
8008 | } | |
8009 | ||
8010 | ||
48229727 JB |
8011 | /* Auto-select enabling of Cortex-A8 erratum fix if the user didn't explicitly |
8012 | say what they wanted. */ | |
8013 | ||
8014 | void | |
8015 | bfd_elf32_arm_set_cortex_a8_fix (bfd *obfd, struct bfd_link_info *link_info) | |
8016 | { | |
8017 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); | |
8018 | obj_attribute *out_attr = elf_known_obj_attributes_proc (obfd); | |
8019 | ||
4dfe6ac6 NC |
8020 | if (globals == NULL) |
8021 | return; | |
8022 | ||
48229727 JB |
8023 | if (globals->fix_cortex_a8 == -1) |
8024 | { | |
8025 | /* Turn on Cortex-A8 erratum workaround for ARMv7-A. */ | |
8026 | if (out_attr[Tag_CPU_arch].i == TAG_CPU_ARCH_V7 | |
8027 | && (out_attr[Tag_CPU_arch_profile].i == 'A' | |
8028 | || out_attr[Tag_CPU_arch_profile].i == 0)) | |
8029 | globals->fix_cortex_a8 = 1; | |
8030 | else | |
8031 | globals->fix_cortex_a8 = 0; | |
8032 | } | |
8033 | } | |
8034 | ||
8035 | ||
c7b8f16e JB |
8036 | void |
8037 | bfd_elf32_arm_set_vfp11_fix (bfd *obfd, struct bfd_link_info *link_info) | |
8038 | { | |
8039 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); | |
104d59d1 | 8040 | obj_attribute *out_attr = elf_known_obj_attributes_proc (obfd); |
906e58ca | 8041 | |
4dfe6ac6 NC |
8042 | if (globals == NULL) |
8043 | return; | |
c7b8f16e JB |
8044 | /* We assume that ARMv7+ does not need the VFP11 denorm erratum fix. */ |
8045 | if (out_attr[Tag_CPU_arch].i >= TAG_CPU_ARCH_V7) | |
8046 | { | |
8047 | switch (globals->vfp11_fix) | |
99059e56 RM |
8048 | { |
8049 | case BFD_ARM_VFP11_FIX_DEFAULT: | |
8050 | case BFD_ARM_VFP11_FIX_NONE: | |
8051 | globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE; | |
8052 | break; | |
8053 | ||
8054 | default: | |
8055 | /* Give a warning, but do as the user requests anyway. */ | |
871b3ab2 | 8056 | _bfd_error_handler (_("%pB: warning: selected VFP11 erratum " |
99059e56 RM |
8057 | "workaround is not necessary for target architecture"), obfd); |
8058 | } | |
c7b8f16e JB |
8059 | } |
8060 | else if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_DEFAULT) | |
8061 | /* For earlier architectures, we might need the workaround, but do not | |
8062 | enable it by default. If users is running with broken hardware, they | |
8063 | must enable the erratum fix explicitly. */ | |
8064 | globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE; | |
8065 | } | |
8066 | ||
a504d23a LA |
8067 | void |
8068 | bfd_elf32_arm_set_stm32l4xx_fix (bfd *obfd, struct bfd_link_info *link_info) | |
8069 | { | |
8070 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); | |
8071 | obj_attribute *out_attr = elf_known_obj_attributes_proc (obfd); | |
8072 | ||
8073 | if (globals == NULL) | |
8074 | return; | |
8075 | ||
8076 | /* We assume only Cortex-M4 may require the fix. */ | |
8077 | if (out_attr[Tag_CPU_arch].i != TAG_CPU_ARCH_V7E_M | |
8078 | || out_attr[Tag_CPU_arch_profile].i != 'M') | |
8079 | { | |
8080 | if (globals->stm32l4xx_fix != BFD_ARM_STM32L4XX_FIX_NONE) | |
8081 | /* Give a warning, but do as the user requests anyway. */ | |
4eca0228 | 8082 | _bfd_error_handler |
871b3ab2 | 8083 | (_("%pB: warning: selected STM32L4XX erratum " |
a504d23a LA |
8084 | "workaround is not necessary for target architecture"), obfd); |
8085 | } | |
8086 | } | |
c7b8f16e | 8087 | |
906e58ca NC |
8088 | enum bfd_arm_vfp11_pipe |
8089 | { | |
c7b8f16e JB |
8090 | VFP11_FMAC, |
8091 | VFP11_LS, | |
8092 | VFP11_DS, | |
8093 | VFP11_BAD | |
8094 | }; | |
8095 | ||
8096 | /* Return a VFP register number. This is encoded as RX:X for single-precision | |
8097 | registers, or X:RX for double-precision registers, where RX is the group of | |
8098 | four bits in the instruction encoding and X is the single extension bit. | |
8099 | RX and X fields are specified using their lowest (starting) bit. The return | |
8100 | value is: | |
8101 | ||
8102 | 0...31: single-precision registers s0...s31 | |
8103 | 32...63: double-precision registers d0...d31. | |
906e58ca | 8104 | |
c7b8f16e JB |
8105 | Although X should be zero for VFP11 (encoding d0...d15 only), we might |
8106 | encounter VFP3 instructions, so we allow the full range for DP registers. */ | |
906e58ca | 8107 | |
c7b8f16e JB |
8108 | static unsigned int |
8109 | bfd_arm_vfp11_regno (unsigned int insn, bfd_boolean is_double, unsigned int rx, | |
99059e56 | 8110 | unsigned int x) |
c7b8f16e JB |
8111 | { |
8112 | if (is_double) | |
8113 | return (((insn >> rx) & 0xf) | (((insn >> x) & 1) << 4)) + 32; | |
8114 | else | |
8115 | return (((insn >> rx) & 0xf) << 1) | ((insn >> x) & 1); | |
8116 | } | |
8117 | ||
8118 | /* Set bits in *WMASK according to a register number REG as encoded by | |
8119 | bfd_arm_vfp11_regno(). Ignore d16-d31. */ | |
8120 | ||
8121 | static void | |
8122 | bfd_arm_vfp11_write_mask (unsigned int *wmask, unsigned int reg) | |
8123 | { | |
8124 | if (reg < 32) | |
8125 | *wmask |= 1 << reg; | |
8126 | else if (reg < 48) | |
8127 | *wmask |= 3 << ((reg - 32) * 2); | |
8128 | } | |
8129 | ||
8130 | /* Return TRUE if WMASK overwrites anything in REGS. */ | |
8131 | ||
8132 | static bfd_boolean | |
8133 | bfd_arm_vfp11_antidependency (unsigned int wmask, int *regs, int numregs) | |
8134 | { | |
8135 | int i; | |
906e58ca | 8136 | |
c7b8f16e JB |
8137 | for (i = 0; i < numregs; i++) |
8138 | { | |
8139 | unsigned int reg = regs[i]; | |
8140 | ||
8141 | if (reg < 32 && (wmask & (1 << reg)) != 0) | |
99059e56 | 8142 | return TRUE; |
906e58ca | 8143 | |
c7b8f16e JB |
8144 | reg -= 32; |
8145 | ||
8146 | if (reg >= 16) | |
99059e56 | 8147 | continue; |
906e58ca | 8148 | |
c7b8f16e | 8149 | if ((wmask & (3 << (reg * 2))) != 0) |
99059e56 | 8150 | return TRUE; |
c7b8f16e | 8151 | } |
906e58ca | 8152 | |
c7b8f16e JB |
8153 | return FALSE; |
8154 | } | |
8155 | ||
8156 | /* In this function, we're interested in two things: finding input registers | |
8157 | for VFP data-processing instructions, and finding the set of registers which | |
8158 | arbitrary VFP instructions may write to. We use a 32-bit unsigned int to | |
8159 | hold the written set, so FLDM etc. are easy to deal with (we're only | |
8160 | interested in 32 SP registers or 16 dp registers, due to the VFP version | |
8161 | implemented by the chip in question). DP registers are marked by setting | |
8162 | both SP registers in the write mask). */ | |
8163 | ||
8164 | static enum bfd_arm_vfp11_pipe | |
8165 | bfd_arm_vfp11_insn_decode (unsigned int insn, unsigned int *destmask, int *regs, | |
99059e56 | 8166 | int *numregs) |
c7b8f16e | 8167 | { |
91d6fa6a | 8168 | enum bfd_arm_vfp11_pipe vpipe = VFP11_BAD; |
c7b8f16e JB |
8169 | bfd_boolean is_double = ((insn & 0xf00) == 0xb00) ? 1 : 0; |
8170 | ||
8171 | if ((insn & 0x0f000e10) == 0x0e000a00) /* A data-processing insn. */ | |
8172 | { | |
8173 | unsigned int pqrs; | |
8174 | unsigned int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22); | |
8175 | unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5); | |
8176 | ||
8177 | pqrs = ((insn & 0x00800000) >> 20) | |
99059e56 RM |
8178 | | ((insn & 0x00300000) >> 19) |
8179 | | ((insn & 0x00000040) >> 6); | |
c7b8f16e JB |
8180 | |
8181 | switch (pqrs) | |
99059e56 RM |
8182 | { |
8183 | case 0: /* fmac[sd]. */ | |
8184 | case 1: /* fnmac[sd]. */ | |
8185 | case 2: /* fmsc[sd]. */ | |
8186 | case 3: /* fnmsc[sd]. */ | |
8187 | vpipe = VFP11_FMAC; | |
8188 | bfd_arm_vfp11_write_mask (destmask, fd); | |
8189 | regs[0] = fd; | |
8190 | regs[1] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */ | |
8191 | regs[2] = fm; | |
8192 | *numregs = 3; | |
8193 | break; | |
8194 | ||
8195 | case 4: /* fmul[sd]. */ | |
8196 | case 5: /* fnmul[sd]. */ | |
8197 | case 6: /* fadd[sd]. */ | |
8198 | case 7: /* fsub[sd]. */ | |
8199 | vpipe = VFP11_FMAC; | |
8200 | goto vfp_binop; | |
8201 | ||
8202 | case 8: /* fdiv[sd]. */ | |
8203 | vpipe = VFP11_DS; | |
8204 | vfp_binop: | |
8205 | bfd_arm_vfp11_write_mask (destmask, fd); | |
8206 | regs[0] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */ | |
8207 | regs[1] = fm; | |
8208 | *numregs = 2; | |
8209 | break; | |
8210 | ||
8211 | case 15: /* extended opcode. */ | |
8212 | { | |
8213 | unsigned int extn = ((insn >> 15) & 0x1e) | |
8214 | | ((insn >> 7) & 1); | |
8215 | ||
8216 | switch (extn) | |
8217 | { | |
8218 | case 0: /* fcpy[sd]. */ | |
8219 | case 1: /* fabs[sd]. */ | |
8220 | case 2: /* fneg[sd]. */ | |
8221 | case 8: /* fcmp[sd]. */ | |
8222 | case 9: /* fcmpe[sd]. */ | |
8223 | case 10: /* fcmpz[sd]. */ | |
8224 | case 11: /* fcmpez[sd]. */ | |
8225 | case 16: /* fuito[sd]. */ | |
8226 | case 17: /* fsito[sd]. */ | |
8227 | case 24: /* ftoui[sd]. */ | |
8228 | case 25: /* ftouiz[sd]. */ | |
8229 | case 26: /* ftosi[sd]. */ | |
8230 | case 27: /* ftosiz[sd]. */ | |
8231 | /* These instructions will not bounce due to underflow. */ | |
8232 | *numregs = 0; | |
8233 | vpipe = VFP11_FMAC; | |
8234 | break; | |
8235 | ||
8236 | case 3: /* fsqrt[sd]. */ | |
8237 | /* fsqrt cannot underflow, but it can (perhaps) overwrite | |
8238 | registers to cause the erratum in previous instructions. */ | |
8239 | bfd_arm_vfp11_write_mask (destmask, fd); | |
8240 | vpipe = VFP11_DS; | |
8241 | break; | |
8242 | ||
8243 | case 15: /* fcvt{ds,sd}. */ | |
8244 | { | |
8245 | int rnum = 0; | |
8246 | ||
8247 | bfd_arm_vfp11_write_mask (destmask, fd); | |
c7b8f16e JB |
8248 | |
8249 | /* Only FCVTSD can underflow. */ | |
99059e56 RM |
8250 | if ((insn & 0x100) != 0) |
8251 | regs[rnum++] = fm; | |
c7b8f16e | 8252 | |
99059e56 | 8253 | *numregs = rnum; |
c7b8f16e | 8254 | |
99059e56 RM |
8255 | vpipe = VFP11_FMAC; |
8256 | } | |
8257 | break; | |
c7b8f16e | 8258 | |
99059e56 RM |
8259 | default: |
8260 | return VFP11_BAD; | |
8261 | } | |
8262 | } | |
8263 | break; | |
c7b8f16e | 8264 | |
99059e56 RM |
8265 | default: |
8266 | return VFP11_BAD; | |
8267 | } | |
c7b8f16e JB |
8268 | } |
8269 | /* Two-register transfer. */ | |
8270 | else if ((insn & 0x0fe00ed0) == 0x0c400a10) | |
8271 | { | |
8272 | unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5); | |
906e58ca | 8273 | |
c7b8f16e JB |
8274 | if ((insn & 0x100000) == 0) |
8275 | { | |
99059e56 RM |
8276 | if (is_double) |
8277 | bfd_arm_vfp11_write_mask (destmask, fm); | |
8278 | else | |
8279 | { | |
8280 | bfd_arm_vfp11_write_mask (destmask, fm); | |
8281 | bfd_arm_vfp11_write_mask (destmask, fm + 1); | |
8282 | } | |
c7b8f16e JB |
8283 | } |
8284 | ||
91d6fa6a | 8285 | vpipe = VFP11_LS; |
c7b8f16e JB |
8286 | } |
8287 | else if ((insn & 0x0e100e00) == 0x0c100a00) /* A load insn. */ | |
8288 | { | |
8289 | int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22); | |
8290 | unsigned int puw = ((insn >> 21) & 0x1) | (((insn >> 23) & 3) << 1); | |
906e58ca | 8291 | |
c7b8f16e | 8292 | switch (puw) |
99059e56 RM |
8293 | { |
8294 | case 0: /* Two-reg transfer. We should catch these above. */ | |
8295 | abort (); | |
906e58ca | 8296 | |
99059e56 RM |
8297 | case 2: /* fldm[sdx]. */ |
8298 | case 3: | |
8299 | case 5: | |
8300 | { | |
8301 | unsigned int i, offset = insn & 0xff; | |
c7b8f16e | 8302 | |
99059e56 RM |
8303 | if (is_double) |
8304 | offset >>= 1; | |
c7b8f16e | 8305 | |
99059e56 RM |
8306 | for (i = fd; i < fd + offset; i++) |
8307 | bfd_arm_vfp11_write_mask (destmask, i); | |
8308 | } | |
8309 | break; | |
906e58ca | 8310 | |
99059e56 RM |
8311 | case 4: /* fld[sd]. */ |
8312 | case 6: | |
8313 | bfd_arm_vfp11_write_mask (destmask, fd); | |
8314 | break; | |
906e58ca | 8315 | |
99059e56 RM |
8316 | default: |
8317 | return VFP11_BAD; | |
8318 | } | |
c7b8f16e | 8319 | |
91d6fa6a | 8320 | vpipe = VFP11_LS; |
c7b8f16e JB |
8321 | } |
8322 | /* Single-register transfer. Note L==0. */ | |
8323 | else if ((insn & 0x0f100e10) == 0x0e000a10) | |
8324 | { | |
8325 | unsigned int opcode = (insn >> 21) & 7; | |
8326 | unsigned int fn = bfd_arm_vfp11_regno (insn, is_double, 16, 7); | |
8327 | ||
8328 | switch (opcode) | |
99059e56 RM |
8329 | { |
8330 | case 0: /* fmsr/fmdlr. */ | |
8331 | case 1: /* fmdhr. */ | |
8332 | /* Mark fmdhr and fmdlr as writing to the whole of the DP | |
8333 | destination register. I don't know if this is exactly right, | |
8334 | but it is the conservative choice. */ | |
8335 | bfd_arm_vfp11_write_mask (destmask, fn); | |
8336 | break; | |
8337 | ||
8338 | case 7: /* fmxr. */ | |
8339 | break; | |
8340 | } | |
c7b8f16e | 8341 | |
91d6fa6a | 8342 | vpipe = VFP11_LS; |
c7b8f16e JB |
8343 | } |
8344 | ||
91d6fa6a | 8345 | return vpipe; |
c7b8f16e JB |
8346 | } |
8347 | ||
8348 | ||
8349 | static int elf32_arm_compare_mapping (const void * a, const void * b); | |
8350 | ||
8351 | ||
8352 | /* Look for potentially-troublesome code sequences which might trigger the | |
8353 | VFP11 denormal/antidependency erratum. See, e.g., the ARM1136 errata sheet | |
8354 | (available from ARM) for details of the erratum. A short version is | |
8355 | described in ld.texinfo. */ | |
8356 | ||
8357 | bfd_boolean | |
8358 | bfd_elf32_arm_vfp11_erratum_scan (bfd *abfd, struct bfd_link_info *link_info) | |
8359 | { | |
8360 | asection *sec; | |
8361 | bfd_byte *contents = NULL; | |
8362 | int state = 0; | |
8363 | int regs[3], numregs = 0; | |
8364 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); | |
8365 | int use_vector = (globals->vfp11_fix == BFD_ARM_VFP11_FIX_VECTOR); | |
906e58ca | 8366 | |
4dfe6ac6 NC |
8367 | if (globals == NULL) |
8368 | return FALSE; | |
8369 | ||
c7b8f16e JB |
8370 | /* We use a simple FSM to match troublesome VFP11 instruction sequences. |
8371 | The states transition as follows: | |
906e58ca | 8372 | |
c7b8f16e | 8373 | 0 -> 1 (vector) or 0 -> 2 (scalar) |
99059e56 RM |
8374 | A VFP FMAC-pipeline instruction has been seen. Fill |
8375 | regs[0]..regs[numregs-1] with its input operands. Remember this | |
8376 | instruction in 'first_fmac'. | |
c7b8f16e JB |
8377 | |
8378 | 1 -> 2 | |
99059e56 RM |
8379 | Any instruction, except for a VFP instruction which overwrites |
8380 | regs[*]. | |
906e58ca | 8381 | |
c7b8f16e JB |
8382 | 1 -> 3 [ -> 0 ] or |
8383 | 2 -> 3 [ -> 0 ] | |
99059e56 RM |
8384 | A VFP instruction has been seen which overwrites any of regs[*]. |
8385 | We must make a veneer! Reset state to 0 before examining next | |
8386 | instruction. | |
906e58ca | 8387 | |
c7b8f16e | 8388 | 2 -> 0 |
99059e56 RM |
8389 | If we fail to match anything in state 2, reset to state 0 and reset |
8390 | the instruction pointer to the instruction after 'first_fmac'. | |
c7b8f16e JB |
8391 | |
8392 | If the VFP11 vector mode is in use, there must be at least two unrelated | |
8393 | instructions between anti-dependent VFP11 instructions to properly avoid | |
906e58ca | 8394 | triggering the erratum, hence the use of the extra state 1. */ |
c7b8f16e JB |
8395 | |
8396 | /* If we are only performing a partial link do not bother | |
8397 | to construct any glue. */ | |
0e1862bb | 8398 | if (bfd_link_relocatable (link_info)) |
c7b8f16e JB |
8399 | return TRUE; |
8400 | ||
0ffa91dd NC |
8401 | /* Skip if this bfd does not correspond to an ELF image. */ |
8402 | if (! is_arm_elf (abfd)) | |
8403 | return TRUE; | |
906e58ca | 8404 | |
c7b8f16e JB |
8405 | /* We should have chosen a fix type by the time we get here. */ |
8406 | BFD_ASSERT (globals->vfp11_fix != BFD_ARM_VFP11_FIX_DEFAULT); | |
8407 | ||
8408 | if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_NONE) | |
8409 | return TRUE; | |
2e6030b9 | 8410 | |
33a7ffc2 JM |
8411 | /* Skip this BFD if it corresponds to an executable or dynamic object. */ |
8412 | if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0) | |
8413 | return TRUE; | |
8414 | ||
c7b8f16e JB |
8415 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
8416 | { | |
8417 | unsigned int i, span, first_fmac = 0, veneer_of_insn = 0; | |
8418 | struct _arm_elf_section_data *sec_data; | |
8419 | ||
8420 | /* If we don't have executable progbits, we're not interested in this | |
99059e56 | 8421 | section. Also skip if section is to be excluded. */ |
c7b8f16e | 8422 | if (elf_section_type (sec) != SHT_PROGBITS |
99059e56 RM |
8423 | || (elf_section_flags (sec) & SHF_EXECINSTR) == 0 |
8424 | || (sec->flags & SEC_EXCLUDE) != 0 | |
dbaa2011 | 8425 | || sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
33a7ffc2 | 8426 | || sec->output_section == bfd_abs_section_ptr |
99059e56 RM |
8427 | || strcmp (sec->name, VFP11_ERRATUM_VENEER_SECTION_NAME) == 0) |
8428 | continue; | |
c7b8f16e JB |
8429 | |
8430 | sec_data = elf32_arm_section_data (sec); | |
906e58ca | 8431 | |
c7b8f16e | 8432 | if (sec_data->mapcount == 0) |
99059e56 | 8433 | continue; |
906e58ca | 8434 | |
c7b8f16e JB |
8435 | if (elf_section_data (sec)->this_hdr.contents != NULL) |
8436 | contents = elf_section_data (sec)->this_hdr.contents; | |
8437 | else if (! bfd_malloc_and_get_section (abfd, sec, &contents)) | |
8438 | goto error_return; | |
8439 | ||
8440 | qsort (sec_data->map, sec_data->mapcount, sizeof (elf32_arm_section_map), | |
8441 | elf32_arm_compare_mapping); | |
8442 | ||
8443 | for (span = 0; span < sec_data->mapcount; span++) | |
99059e56 RM |
8444 | { |
8445 | unsigned int span_start = sec_data->map[span].vma; | |
8446 | unsigned int span_end = (span == sec_data->mapcount - 1) | |
c7b8f16e | 8447 | ? sec->size : sec_data->map[span + 1].vma; |
99059e56 RM |
8448 | char span_type = sec_data->map[span].type; |
8449 | ||
8450 | /* FIXME: Only ARM mode is supported at present. We may need to | |
8451 | support Thumb-2 mode also at some point. */ | |
8452 | if (span_type != 'a') | |
8453 | continue; | |
8454 | ||
8455 | for (i = span_start; i < span_end;) | |
8456 | { | |
8457 | unsigned int next_i = i + 4; | |
8458 | unsigned int insn = bfd_big_endian (abfd) | |
8459 | ? (contents[i] << 24) | |
8460 | | (contents[i + 1] << 16) | |
8461 | | (contents[i + 2] << 8) | |
8462 | | contents[i + 3] | |
8463 | : (contents[i + 3] << 24) | |
8464 | | (contents[i + 2] << 16) | |
8465 | | (contents[i + 1] << 8) | |
8466 | | contents[i]; | |
8467 | unsigned int writemask = 0; | |
8468 | enum bfd_arm_vfp11_pipe vpipe; | |
8469 | ||
8470 | switch (state) | |
8471 | { | |
8472 | case 0: | |
8473 | vpipe = bfd_arm_vfp11_insn_decode (insn, &writemask, regs, | |
8474 | &numregs); | |
8475 | /* I'm assuming the VFP11 erratum can trigger with denorm | |
8476 | operands on either the FMAC or the DS pipeline. This might | |
8477 | lead to slightly overenthusiastic veneer insertion. */ | |
8478 | if (vpipe == VFP11_FMAC || vpipe == VFP11_DS) | |
8479 | { | |
8480 | state = use_vector ? 1 : 2; | |
8481 | first_fmac = i; | |
8482 | veneer_of_insn = insn; | |
8483 | } | |
8484 | break; | |
8485 | ||
8486 | case 1: | |
8487 | { | |
8488 | int other_regs[3], other_numregs; | |
8489 | vpipe = bfd_arm_vfp11_insn_decode (insn, &writemask, | |
c7b8f16e | 8490 | other_regs, |
99059e56 RM |
8491 | &other_numregs); |
8492 | if (vpipe != VFP11_BAD | |
8493 | && bfd_arm_vfp11_antidependency (writemask, regs, | |
c7b8f16e | 8494 | numregs)) |
99059e56 RM |
8495 | state = 3; |
8496 | else | |
8497 | state = 2; | |
8498 | } | |
8499 | break; | |
8500 | ||
8501 | case 2: | |
8502 | { | |
8503 | int other_regs[3], other_numregs; | |
8504 | vpipe = bfd_arm_vfp11_insn_decode (insn, &writemask, | |
c7b8f16e | 8505 | other_regs, |
99059e56 RM |
8506 | &other_numregs); |
8507 | if (vpipe != VFP11_BAD | |
8508 | && bfd_arm_vfp11_antidependency (writemask, regs, | |
c7b8f16e | 8509 | numregs)) |
99059e56 RM |
8510 | state = 3; |
8511 | else | |
8512 | { | |
8513 | state = 0; | |
8514 | next_i = first_fmac + 4; | |
8515 | } | |
8516 | } | |
8517 | break; | |
8518 | ||
8519 | case 3: | |
8520 | abort (); /* Should be unreachable. */ | |
8521 | } | |
8522 | ||
8523 | if (state == 3) | |
8524 | { | |
8525 | elf32_vfp11_erratum_list *newerr =(elf32_vfp11_erratum_list *) | |
8526 | bfd_zmalloc (sizeof (elf32_vfp11_erratum_list)); | |
8527 | ||
8528 | elf32_arm_section_data (sec)->erratumcount += 1; | |
8529 | ||
8530 | newerr->u.b.vfp_insn = veneer_of_insn; | |
8531 | ||
8532 | switch (span_type) | |
8533 | { | |
8534 | case 'a': | |
8535 | newerr->type = VFP11_ERRATUM_BRANCH_TO_ARM_VENEER; | |
8536 | break; | |
8537 | ||
8538 | default: | |
8539 | abort (); | |
8540 | } | |
8541 | ||
8542 | record_vfp11_erratum_veneer (link_info, newerr, abfd, sec, | |
c7b8f16e JB |
8543 | first_fmac); |
8544 | ||
99059e56 | 8545 | newerr->vma = -1; |
c7b8f16e | 8546 | |
99059e56 RM |
8547 | newerr->next = sec_data->erratumlist; |
8548 | sec_data->erratumlist = newerr; | |
c7b8f16e | 8549 | |
99059e56 RM |
8550 | state = 0; |
8551 | } | |
c7b8f16e | 8552 | |
99059e56 RM |
8553 | i = next_i; |
8554 | } | |
8555 | } | |
906e58ca | 8556 | |
c7b8f16e | 8557 | if (contents != NULL |
99059e56 RM |
8558 | && elf_section_data (sec)->this_hdr.contents != contents) |
8559 | free (contents); | |
c7b8f16e JB |
8560 | contents = NULL; |
8561 | } | |
8562 | ||
8563 | return TRUE; | |
8564 | ||
8565 | error_return: | |
8566 | if (contents != NULL | |
8567 | && elf_section_data (sec)->this_hdr.contents != contents) | |
8568 | free (contents); | |
906e58ca | 8569 | |
c7b8f16e JB |
8570 | return FALSE; |
8571 | } | |
8572 | ||
8573 | /* Find virtual-memory addresses for VFP11 erratum veneers and return locations | |
8574 | after sections have been laid out, using specially-named symbols. */ | |
8575 | ||
8576 | void | |
8577 | bfd_elf32_arm_vfp11_fix_veneer_locations (bfd *abfd, | |
8578 | struct bfd_link_info *link_info) | |
8579 | { | |
8580 | asection *sec; | |
8581 | struct elf32_arm_link_hash_table *globals; | |
8582 | char *tmp_name; | |
906e58ca | 8583 | |
0e1862bb | 8584 | if (bfd_link_relocatable (link_info)) |
c7b8f16e | 8585 | return; |
2e6030b9 MS |
8586 | |
8587 | /* Skip if this bfd does not correspond to an ELF image. */ | |
0ffa91dd | 8588 | if (! is_arm_elf (abfd)) |
2e6030b9 MS |
8589 | return; |
8590 | ||
c7b8f16e | 8591 | globals = elf32_arm_hash_table (link_info); |
4dfe6ac6 NC |
8592 | if (globals == NULL) |
8593 | return; | |
906e58ca | 8594 | |
21d799b5 | 8595 | tmp_name = (char *) bfd_malloc ((bfd_size_type) strlen |
99059e56 | 8596 | (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10); |
c7b8f16e JB |
8597 | |
8598 | for (sec = abfd->sections; sec != NULL; sec = sec->next) | |
8599 | { | |
8600 | struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec); | |
8601 | elf32_vfp11_erratum_list *errnode = sec_data->erratumlist; | |
906e58ca | 8602 | |
c7b8f16e | 8603 | for (; errnode != NULL; errnode = errnode->next) |
99059e56 RM |
8604 | { |
8605 | struct elf_link_hash_entry *myh; | |
8606 | bfd_vma vma; | |
8607 | ||
8608 | switch (errnode->type) | |
8609 | { | |
8610 | case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER: | |
8611 | case VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER: | |
8612 | /* Find veneer symbol. */ | |
8613 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME, | |
c7b8f16e JB |
8614 | errnode->u.b.veneer->u.v.id); |
8615 | ||
99059e56 RM |
8616 | myh = elf_link_hash_lookup |
8617 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); | |
c7b8f16e | 8618 | |
a504d23a | 8619 | if (myh == NULL) |
90b6238f AM |
8620 | _bfd_error_handler (_("%pB: unable to find %s veneer `%s'"), |
8621 | abfd, "VFP11", tmp_name); | |
a504d23a LA |
8622 | |
8623 | vma = myh->root.u.def.section->output_section->vma | |
8624 | + myh->root.u.def.section->output_offset | |
8625 | + myh->root.u.def.value; | |
8626 | ||
8627 | errnode->u.b.veneer->vma = vma; | |
8628 | break; | |
8629 | ||
8630 | case VFP11_ERRATUM_ARM_VENEER: | |
8631 | case VFP11_ERRATUM_THUMB_VENEER: | |
8632 | /* Find return location. */ | |
8633 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r", | |
8634 | errnode->u.v.id); | |
8635 | ||
8636 | myh = elf_link_hash_lookup | |
8637 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); | |
8638 | ||
8639 | if (myh == NULL) | |
90b6238f AM |
8640 | _bfd_error_handler (_("%pB: unable to find %s veneer `%s'"), |
8641 | abfd, "VFP11", tmp_name); | |
a504d23a LA |
8642 | |
8643 | vma = myh->root.u.def.section->output_section->vma | |
8644 | + myh->root.u.def.section->output_offset | |
8645 | + myh->root.u.def.value; | |
8646 | ||
8647 | errnode->u.v.branch->vma = vma; | |
8648 | break; | |
8649 | ||
8650 | default: | |
8651 | abort (); | |
8652 | } | |
8653 | } | |
8654 | } | |
8655 | ||
8656 | free (tmp_name); | |
8657 | } | |
8658 | ||
8659 | /* Find virtual-memory addresses for STM32L4XX erratum veneers and | |
8660 | return locations after sections have been laid out, using | |
8661 | specially-named symbols. */ | |
8662 | ||
8663 | void | |
8664 | bfd_elf32_arm_stm32l4xx_fix_veneer_locations (bfd *abfd, | |
8665 | struct bfd_link_info *link_info) | |
8666 | { | |
8667 | asection *sec; | |
8668 | struct elf32_arm_link_hash_table *globals; | |
8669 | char *tmp_name; | |
8670 | ||
8671 | if (bfd_link_relocatable (link_info)) | |
8672 | return; | |
8673 | ||
8674 | /* Skip if this bfd does not correspond to an ELF image. */ | |
8675 | if (! is_arm_elf (abfd)) | |
8676 | return; | |
8677 | ||
8678 | globals = elf32_arm_hash_table (link_info); | |
8679 | if (globals == NULL) | |
8680 | return; | |
8681 | ||
8682 | tmp_name = (char *) bfd_malloc ((bfd_size_type) strlen | |
8683 | (STM32L4XX_ERRATUM_VENEER_ENTRY_NAME) + 10); | |
8684 | ||
8685 | for (sec = abfd->sections; sec != NULL; sec = sec->next) | |
8686 | { | |
8687 | struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec); | |
8688 | elf32_stm32l4xx_erratum_list *errnode = sec_data->stm32l4xx_erratumlist; | |
8689 | ||
8690 | for (; errnode != NULL; errnode = errnode->next) | |
8691 | { | |
8692 | struct elf_link_hash_entry *myh; | |
8693 | bfd_vma vma; | |
8694 | ||
8695 | switch (errnode->type) | |
8696 | { | |
8697 | case STM32L4XX_ERRATUM_BRANCH_TO_VENEER: | |
8698 | /* Find veneer symbol. */ | |
8699 | sprintf (tmp_name, STM32L4XX_ERRATUM_VENEER_ENTRY_NAME, | |
8700 | errnode->u.b.veneer->u.v.id); | |
8701 | ||
8702 | myh = elf_link_hash_lookup | |
8703 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); | |
8704 | ||
8705 | if (myh == NULL) | |
90b6238f AM |
8706 | _bfd_error_handler (_("%pB: unable to find %s veneer `%s'"), |
8707 | abfd, "STM32L4XX", tmp_name); | |
a504d23a LA |
8708 | |
8709 | vma = myh->root.u.def.section->output_section->vma | |
8710 | + myh->root.u.def.section->output_offset | |
8711 | + myh->root.u.def.value; | |
8712 | ||
8713 | errnode->u.b.veneer->vma = vma; | |
8714 | break; | |
8715 | ||
8716 | case STM32L4XX_ERRATUM_VENEER: | |
8717 | /* Find return location. */ | |
8718 | sprintf (tmp_name, STM32L4XX_ERRATUM_VENEER_ENTRY_NAME "_r", | |
8719 | errnode->u.v.id); | |
8720 | ||
8721 | myh = elf_link_hash_lookup | |
8722 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); | |
8723 | ||
8724 | if (myh == NULL) | |
90b6238f AM |
8725 | _bfd_error_handler (_("%pB: unable to find %s veneer `%s'"), |
8726 | abfd, "STM32L4XX", tmp_name); | |
a504d23a LA |
8727 | |
8728 | vma = myh->root.u.def.section->output_section->vma | |
8729 | + myh->root.u.def.section->output_offset | |
8730 | + myh->root.u.def.value; | |
8731 | ||
8732 | errnode->u.v.branch->vma = vma; | |
8733 | break; | |
8734 | ||
8735 | default: | |
8736 | abort (); | |
8737 | } | |
8738 | } | |
8739 | } | |
8740 | ||
8741 | free (tmp_name); | |
8742 | } | |
8743 | ||
8744 | static inline bfd_boolean | |
8745 | is_thumb2_ldmia (const insn32 insn) | |
8746 | { | |
8747 | /* Encoding T2: LDM<c>.W <Rn>{!},<registers> | |
8748 | 1110 - 1000 - 10W1 - rrrr - PM (0) l - llll - llll - llll. */ | |
8749 | return (insn & 0xffd02000) == 0xe8900000; | |
8750 | } | |
8751 | ||
8752 | static inline bfd_boolean | |
8753 | is_thumb2_ldmdb (const insn32 insn) | |
8754 | { | |
8755 | /* Encoding T1: LDMDB<c> <Rn>{!},<registers> | |
8756 | 1110 - 1001 - 00W1 - rrrr - PM (0) l - llll - llll - llll. */ | |
8757 | return (insn & 0xffd02000) == 0xe9100000; | |
8758 | } | |
8759 | ||
8760 | static inline bfd_boolean | |
8761 | is_thumb2_vldm (const insn32 insn) | |
8762 | { | |
8763 | /* A6.5 Extension register load or store instruction | |
8764 | A7.7.229 | |
9239bbd3 CM |
8765 | We look for SP 32-bit and DP 64-bit registers. |
8766 | Encoding T1 VLDM{mode}<c> <Rn>{!}, <list> | |
8767 | <list> is consecutive 64-bit registers | |
8768 | 1110 - 110P - UDW1 - rrrr - vvvv - 1011 - iiii - iiii | |
a504d23a LA |
8769 | Encoding T2 VLDM{mode}<c> <Rn>{!}, <list> |
8770 | <list> is consecutive 32-bit registers | |
8771 | 1110 - 110P - UDW1 - rrrr - vvvv - 1010 - iiii - iiii | |
8772 | if P==0 && U==1 && W==1 && Rn=1101 VPOP | |
8773 | if PUW=010 || PUW=011 || PUW=101 VLDM. */ | |
8774 | return | |
9239bbd3 CM |
8775 | (((insn & 0xfe100f00) == 0xec100b00) || |
8776 | ((insn & 0xfe100f00) == 0xec100a00)) | |
a504d23a LA |
8777 | && /* (IA without !). */ |
8778 | (((((insn << 7) >> 28) & 0xd) == 0x4) | |
9239bbd3 | 8779 | /* (IA with !), includes VPOP (when reg number is SP). */ |
a504d23a LA |
8780 | || ((((insn << 7) >> 28) & 0xd) == 0x5) |
8781 | /* (DB with !). */ | |
8782 | || ((((insn << 7) >> 28) & 0xd) == 0x9)); | |
8783 | } | |
8784 | ||
8785 | /* STM STM32L4XX erratum : This function assumes that it receives an LDM or | |
8786 | VLDM opcode and: | |
8787 | - computes the number and the mode of memory accesses | |
8788 | - decides if the replacement should be done: | |
8789 | . replaces only if > 8-word accesses | |
8790 | . or (testing purposes only) replaces all accesses. */ | |
8791 | ||
8792 | static bfd_boolean | |
8793 | stm32l4xx_need_create_replacing_stub (const insn32 insn, | |
8794 | bfd_arm_stm32l4xx_fix stm32l4xx_fix) | |
8795 | { | |
9239bbd3 | 8796 | int nb_words = 0; |
a504d23a LA |
8797 | |
8798 | /* The field encoding the register list is the same for both LDMIA | |
8799 | and LDMDB encodings. */ | |
8800 | if (is_thumb2_ldmia (insn) || is_thumb2_ldmdb (insn)) | |
b25e998d | 8801 | nb_words = elf32_arm_popcount (insn & 0x0000ffff); |
a504d23a | 8802 | else if (is_thumb2_vldm (insn)) |
9239bbd3 | 8803 | nb_words = (insn & 0xff); |
a504d23a LA |
8804 | |
8805 | /* DEFAULT mode accounts for the real bug condition situation, | |
8806 | ALL mode inserts stubs for each LDM/VLDM instruction (testing). */ | |
8807 | return | |
9239bbd3 | 8808 | (stm32l4xx_fix == BFD_ARM_STM32L4XX_FIX_DEFAULT) ? nb_words > 8 : |
a504d23a LA |
8809 | (stm32l4xx_fix == BFD_ARM_STM32L4XX_FIX_ALL) ? TRUE : FALSE; |
8810 | } | |
8811 | ||
8812 | /* Look for potentially-troublesome code sequences which might trigger | |
8813 | the STM STM32L4XX erratum. */ | |
8814 | ||
8815 | bfd_boolean | |
8816 | bfd_elf32_arm_stm32l4xx_erratum_scan (bfd *abfd, | |
8817 | struct bfd_link_info *link_info) | |
8818 | { | |
8819 | asection *sec; | |
8820 | bfd_byte *contents = NULL; | |
8821 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); | |
8822 | ||
8823 | if (globals == NULL) | |
8824 | return FALSE; | |
8825 | ||
8826 | /* If we are only performing a partial link do not bother | |
8827 | to construct any glue. */ | |
8828 | if (bfd_link_relocatable (link_info)) | |
8829 | return TRUE; | |
8830 | ||
8831 | /* Skip if this bfd does not correspond to an ELF image. */ | |
8832 | if (! is_arm_elf (abfd)) | |
8833 | return TRUE; | |
8834 | ||
8835 | if (globals->stm32l4xx_fix == BFD_ARM_STM32L4XX_FIX_NONE) | |
8836 | return TRUE; | |
8837 | ||
8838 | /* Skip this BFD if it corresponds to an executable or dynamic object. */ | |
8839 | if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0) | |
8840 | return TRUE; | |
8841 | ||
8842 | for (sec = abfd->sections; sec != NULL; sec = sec->next) | |
8843 | { | |
8844 | unsigned int i, span; | |
8845 | struct _arm_elf_section_data *sec_data; | |
8846 | ||
8847 | /* If we don't have executable progbits, we're not interested in this | |
8848 | section. Also skip if section is to be excluded. */ | |
8849 | if (elf_section_type (sec) != SHT_PROGBITS | |
8850 | || (elf_section_flags (sec) & SHF_EXECINSTR) == 0 | |
8851 | || (sec->flags & SEC_EXCLUDE) != 0 | |
8852 | || sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS | |
8853 | || sec->output_section == bfd_abs_section_ptr | |
8854 | || strcmp (sec->name, STM32L4XX_ERRATUM_VENEER_SECTION_NAME) == 0) | |
8855 | continue; | |
8856 | ||
8857 | sec_data = elf32_arm_section_data (sec); | |
c7b8f16e | 8858 | |
a504d23a LA |
8859 | if (sec_data->mapcount == 0) |
8860 | continue; | |
c7b8f16e | 8861 | |
a504d23a LA |
8862 | if (elf_section_data (sec)->this_hdr.contents != NULL) |
8863 | contents = elf_section_data (sec)->this_hdr.contents; | |
8864 | else if (! bfd_malloc_and_get_section (abfd, sec, &contents)) | |
8865 | goto error_return; | |
c7b8f16e | 8866 | |
a504d23a LA |
8867 | qsort (sec_data->map, sec_data->mapcount, sizeof (elf32_arm_section_map), |
8868 | elf32_arm_compare_mapping); | |
c7b8f16e | 8869 | |
a504d23a LA |
8870 | for (span = 0; span < sec_data->mapcount; span++) |
8871 | { | |
8872 | unsigned int span_start = sec_data->map[span].vma; | |
8873 | unsigned int span_end = (span == sec_data->mapcount - 1) | |
8874 | ? sec->size : sec_data->map[span + 1].vma; | |
8875 | char span_type = sec_data->map[span].type; | |
8876 | int itblock_current_pos = 0; | |
c7b8f16e | 8877 | |
a504d23a LA |
8878 | /* Only Thumb2 mode need be supported with this CM4 specific |
8879 | code, we should not encounter any arm mode eg span_type | |
8880 | != 'a'. */ | |
8881 | if (span_type != 't') | |
8882 | continue; | |
c7b8f16e | 8883 | |
a504d23a LA |
8884 | for (i = span_start; i < span_end;) |
8885 | { | |
8886 | unsigned int insn = bfd_get_16 (abfd, &contents[i]); | |
8887 | bfd_boolean insn_32bit = FALSE; | |
8888 | bfd_boolean is_ldm = FALSE; | |
8889 | bfd_boolean is_vldm = FALSE; | |
8890 | bfd_boolean is_not_last_in_it_block = FALSE; | |
8891 | ||
8892 | /* The first 16-bits of all 32-bit thumb2 instructions start | |
8893 | with opcode[15..13]=0b111 and the encoded op1 can be anything | |
8894 | except opcode[12..11]!=0b00. | |
8895 | See 32-bit Thumb instruction encoding. */ | |
8896 | if ((insn & 0xe000) == 0xe000 && (insn & 0x1800) != 0x0000) | |
8897 | insn_32bit = TRUE; | |
c7b8f16e | 8898 | |
a504d23a LA |
8899 | /* Compute the predicate that tells if the instruction |
8900 | is concerned by the IT block | |
8901 | - Creates an error if there is a ldm that is not | |
8902 | last in the IT block thus cannot be replaced | |
8903 | - Otherwise we can create a branch at the end of the | |
8904 | IT block, it will be controlled naturally by IT | |
8905 | with the proper pseudo-predicate | |
8906 | - So the only interesting predicate is the one that | |
8907 | tells that we are not on the last item of an IT | |
8908 | block. */ | |
8909 | if (itblock_current_pos != 0) | |
8910 | is_not_last_in_it_block = !!--itblock_current_pos; | |
906e58ca | 8911 | |
a504d23a LA |
8912 | if (insn_32bit) |
8913 | { | |
8914 | /* Load the rest of the insn (in manual-friendly order). */ | |
8915 | insn = (insn << 16) | bfd_get_16 (abfd, &contents[i + 2]); | |
8916 | is_ldm = is_thumb2_ldmia (insn) || is_thumb2_ldmdb (insn); | |
8917 | is_vldm = is_thumb2_vldm (insn); | |
8918 | ||
8919 | /* Veneers are created for (v)ldm depending on | |
8920 | option flags and memory accesses conditions; but | |
8921 | if the instruction is not the last instruction of | |
8922 | an IT block, we cannot create a jump there, so we | |
8923 | bail out. */ | |
5025eb7c AO |
8924 | if ((is_ldm || is_vldm) |
8925 | && stm32l4xx_need_create_replacing_stub | |
a504d23a LA |
8926 | (insn, globals->stm32l4xx_fix)) |
8927 | { | |
8928 | if (is_not_last_in_it_block) | |
8929 | { | |
4eca0228 | 8930 | _bfd_error_handler |
695344c0 | 8931 | /* xgettext:c-format */ |
871b3ab2 | 8932 | (_("%pB(%pA+%#x): error: multiple load detected" |
90b6238f AM |
8933 | " in non-last IT block instruction:" |
8934 | " STM32L4XX veneer cannot be generated; " | |
8935 | "use gcc option -mrestrict-it to generate" | |
8936 | " only one instruction per IT block"), | |
d42c267e | 8937 | abfd, sec, i); |
a504d23a LA |
8938 | } |
8939 | else | |
8940 | { | |
8941 | elf32_stm32l4xx_erratum_list *newerr = | |
8942 | (elf32_stm32l4xx_erratum_list *) | |
8943 | bfd_zmalloc | |
8944 | (sizeof (elf32_stm32l4xx_erratum_list)); | |
8945 | ||
8946 | elf32_arm_section_data (sec) | |
8947 | ->stm32l4xx_erratumcount += 1; | |
8948 | newerr->u.b.insn = insn; | |
8949 | /* We create only thumb branches. */ | |
8950 | newerr->type = | |
8951 | STM32L4XX_ERRATUM_BRANCH_TO_VENEER; | |
8952 | record_stm32l4xx_erratum_veneer | |
8953 | (link_info, newerr, abfd, sec, | |
8954 | i, | |
8955 | is_ldm ? | |
8956 | STM32L4XX_ERRATUM_LDM_VENEER_SIZE: | |
8957 | STM32L4XX_ERRATUM_VLDM_VENEER_SIZE); | |
8958 | newerr->vma = -1; | |
8959 | newerr->next = sec_data->stm32l4xx_erratumlist; | |
8960 | sec_data->stm32l4xx_erratumlist = newerr; | |
8961 | } | |
8962 | } | |
8963 | } | |
8964 | else | |
8965 | { | |
8966 | /* A7.7.37 IT p208 | |
8967 | IT blocks are only encoded in T1 | |
8968 | Encoding T1: IT{x{y{z}}} <firstcond> | |
8969 | 1 0 1 1 - 1 1 1 1 - firstcond - mask | |
8970 | if mask = '0000' then see 'related encodings' | |
8971 | We don't deal with UNPREDICTABLE, just ignore these. | |
8972 | There can be no nested IT blocks so an IT block | |
8973 | is naturally a new one for which it is worth | |
8974 | computing its size. */ | |
5025eb7c AO |
8975 | bfd_boolean is_newitblock = ((insn & 0xff00) == 0xbf00) |
8976 | && ((insn & 0x000f) != 0x0000); | |
a504d23a LA |
8977 | /* If we have a new IT block we compute its size. */ |
8978 | if (is_newitblock) | |
8979 | { | |
8980 | /* Compute the number of instructions controlled | |
8981 | by the IT block, it will be used to decide | |
8982 | whether we are inside an IT block or not. */ | |
8983 | unsigned int mask = insn & 0x000f; | |
8984 | itblock_current_pos = 4 - ctz (mask); | |
8985 | } | |
8986 | } | |
8987 | ||
8988 | i += insn_32bit ? 4 : 2; | |
99059e56 RM |
8989 | } |
8990 | } | |
a504d23a LA |
8991 | |
8992 | if (contents != NULL | |
8993 | && elf_section_data (sec)->this_hdr.contents != contents) | |
8994 | free (contents); | |
8995 | contents = NULL; | |
c7b8f16e | 8996 | } |
906e58ca | 8997 | |
a504d23a LA |
8998 | return TRUE; |
8999 | ||
9000 | error_return: | |
9001 | if (contents != NULL | |
9002 | && elf_section_data (sec)->this_hdr.contents != contents) | |
9003 | free (contents); | |
c7b8f16e | 9004 | |
a504d23a LA |
9005 | return FALSE; |
9006 | } | |
c7b8f16e | 9007 | |
eb043451 PB |
9008 | /* Set target relocation values needed during linking. */ |
9009 | ||
9010 | void | |
68c39892 | 9011 | bfd_elf32_arm_set_target_params (struct bfd *output_bfd, |
bf21ed78 | 9012 | struct bfd_link_info *link_info, |
68c39892 | 9013 | struct elf32_arm_params *params) |
eb043451 PB |
9014 | { |
9015 | struct elf32_arm_link_hash_table *globals; | |
9016 | ||
9017 | globals = elf32_arm_hash_table (link_info); | |
4dfe6ac6 NC |
9018 | if (globals == NULL) |
9019 | return; | |
eb043451 | 9020 | |
68c39892 | 9021 | globals->target1_is_rel = params->target1_is_rel; |
29e9b073 CL |
9022 | if (globals->fdpic_p) |
9023 | globals->target2_reloc = R_ARM_GOT32; | |
9024 | else if (strcmp (params->target2_type, "rel") == 0) | |
eb043451 | 9025 | globals->target2_reloc = R_ARM_REL32; |
68c39892 | 9026 | else if (strcmp (params->target2_type, "abs") == 0) |
eeac373a | 9027 | globals->target2_reloc = R_ARM_ABS32; |
68c39892 | 9028 | else if (strcmp (params->target2_type, "got-rel") == 0) |
eb043451 PB |
9029 | globals->target2_reloc = R_ARM_GOT_PREL; |
9030 | else | |
9031 | { | |
90b6238f | 9032 | _bfd_error_handler (_("invalid TARGET2 relocation type '%s'"), |
68c39892 | 9033 | params->target2_type); |
eb043451 | 9034 | } |
68c39892 TP |
9035 | globals->fix_v4bx = params->fix_v4bx; |
9036 | globals->use_blx |= params->use_blx; | |
9037 | globals->vfp11_fix = params->vfp11_denorm_fix; | |
9038 | globals->stm32l4xx_fix = params->stm32l4xx_fix; | |
e8b09b87 CL |
9039 | if (globals->fdpic_p) |
9040 | globals->pic_veneer = 1; | |
9041 | else | |
9042 | globals->pic_veneer = params->pic_veneer; | |
68c39892 TP |
9043 | globals->fix_cortex_a8 = params->fix_cortex_a8; |
9044 | globals->fix_arm1176 = params->fix_arm1176; | |
9045 | globals->cmse_implib = params->cmse_implib; | |
9046 | globals->in_implib_bfd = params->in_implib_bfd; | |
bf21ed78 | 9047 | |
0ffa91dd | 9048 | BFD_ASSERT (is_arm_elf (output_bfd)); |
68c39892 TP |
9049 | elf_arm_tdata (output_bfd)->no_enum_size_warning |
9050 | = params->no_enum_size_warning; | |
9051 | elf_arm_tdata (output_bfd)->no_wchar_size_warning | |
9052 | = params->no_wchar_size_warning; | |
eb043451 | 9053 | } |
eb043451 | 9054 | |
12a0a0fd | 9055 | /* Replace the target offset of a Thumb bl or b.w instruction. */ |
252b5132 | 9056 | |
12a0a0fd PB |
9057 | static void |
9058 | insert_thumb_branch (bfd *abfd, long int offset, bfd_byte *insn) | |
9059 | { | |
9060 | bfd_vma upper; | |
9061 | bfd_vma lower; | |
9062 | int reloc_sign; | |
9063 | ||
9064 | BFD_ASSERT ((offset & 1) == 0); | |
9065 | ||
9066 | upper = bfd_get_16 (abfd, insn); | |
9067 | lower = bfd_get_16 (abfd, insn + 2); | |
9068 | reloc_sign = (offset < 0) ? 1 : 0; | |
9069 | upper = (upper & ~(bfd_vma) 0x7ff) | |
9070 | | ((offset >> 12) & 0x3ff) | |
9071 | | (reloc_sign << 10); | |
906e58ca | 9072 | lower = (lower & ~(bfd_vma) 0x2fff) |
12a0a0fd PB |
9073 | | (((!((offset >> 23) & 1)) ^ reloc_sign) << 13) |
9074 | | (((!((offset >> 22) & 1)) ^ reloc_sign) << 11) | |
9075 | | ((offset >> 1) & 0x7ff); | |
9076 | bfd_put_16 (abfd, upper, insn); | |
9077 | bfd_put_16 (abfd, lower, insn + 2); | |
252b5132 RH |
9078 | } |
9079 | ||
9b485d32 NC |
9080 | /* Thumb code calling an ARM function. */ |
9081 | ||
252b5132 | 9082 | static int |
57e8b36a | 9083 | elf32_thumb_to_arm_stub (struct bfd_link_info * info, |
07d6d2b8 AM |
9084 | const char * name, |
9085 | bfd * input_bfd, | |
9086 | bfd * output_bfd, | |
9087 | asection * input_section, | |
9088 | bfd_byte * hit_data, | |
9089 | asection * sym_sec, | |
9090 | bfd_vma offset, | |
9091 | bfd_signed_vma addend, | |
9092 | bfd_vma val, | |
f2a9dd69 | 9093 | char **error_message) |
252b5132 | 9094 | { |
bcbdc74c | 9095 | asection * s = 0; |
dc810e39 | 9096 | bfd_vma my_offset; |
252b5132 | 9097 | long int ret_offset; |
bcbdc74c NC |
9098 | struct elf_link_hash_entry * myh; |
9099 | struct elf32_arm_link_hash_table * globals; | |
252b5132 | 9100 | |
f2a9dd69 | 9101 | myh = find_thumb_glue (info, name, error_message); |
252b5132 | 9102 | if (myh == NULL) |
b34976b6 | 9103 | return FALSE; |
252b5132 RH |
9104 | |
9105 | globals = elf32_arm_hash_table (info); | |
252b5132 RH |
9106 | BFD_ASSERT (globals != NULL); |
9107 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
9108 | ||
9109 | my_offset = myh->root.u.def.value; | |
9110 | ||
3d4d4302 AM |
9111 | s = bfd_get_linker_section (globals->bfd_of_glue_owner, |
9112 | THUMB2ARM_GLUE_SECTION_NAME); | |
252b5132 RH |
9113 | |
9114 | BFD_ASSERT (s != NULL); | |
9115 | BFD_ASSERT (s->contents != NULL); | |
9116 | BFD_ASSERT (s->output_section != NULL); | |
9117 | ||
9118 | if ((my_offset & 0x01) == 0x01) | |
9119 | { | |
9120 | if (sym_sec != NULL | |
9121 | && sym_sec->owner != NULL | |
9122 | && !INTERWORK_FLAG (sym_sec->owner)) | |
9123 | { | |
4eca0228 | 9124 | _bfd_error_handler |
90b6238f AM |
9125 | (_("%pB(%s): warning: interworking not enabled;" |
9126 | " first occurrence: %pB: %s call to %s"), | |
9127 | sym_sec->owner, name, input_bfd, "Thumb", "ARM"); | |
252b5132 | 9128 | |
b34976b6 | 9129 | return FALSE; |
252b5132 RH |
9130 | } |
9131 | ||
9132 | --my_offset; | |
9133 | myh->root.u.def.value = my_offset; | |
9134 | ||
52ab56c2 PB |
9135 | put_thumb_insn (globals, output_bfd, (bfd_vma) t2a1_bx_pc_insn, |
9136 | s->contents + my_offset); | |
252b5132 | 9137 | |
52ab56c2 PB |
9138 | put_thumb_insn (globals, output_bfd, (bfd_vma) t2a2_noop_insn, |
9139 | s->contents + my_offset + 2); | |
252b5132 RH |
9140 | |
9141 | ret_offset = | |
9b485d32 NC |
9142 | /* Address of destination of the stub. */ |
9143 | ((bfd_signed_vma) val) | |
252b5132 | 9144 | - ((bfd_signed_vma) |
57e8b36a NC |
9145 | /* Offset from the start of the current section |
9146 | to the start of the stubs. */ | |
9b485d32 NC |
9147 | (s->output_offset |
9148 | /* Offset of the start of this stub from the start of the stubs. */ | |
9149 | + my_offset | |
9150 | /* Address of the start of the current section. */ | |
9151 | + s->output_section->vma) | |
9152 | /* The branch instruction is 4 bytes into the stub. */ | |
9153 | + 4 | |
9154 | /* ARM branches work from the pc of the instruction + 8. */ | |
9155 | + 8); | |
252b5132 | 9156 | |
52ab56c2 PB |
9157 | put_arm_insn (globals, output_bfd, |
9158 | (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF), | |
9159 | s->contents + my_offset + 4); | |
252b5132 RH |
9160 | } |
9161 | ||
9162 | BFD_ASSERT (my_offset <= globals->thumb_glue_size); | |
9163 | ||
427bfd90 NC |
9164 | /* Now go back and fix up the original BL insn to point to here. */ |
9165 | ret_offset = | |
9166 | /* Address of where the stub is located. */ | |
9167 | (s->output_section->vma + s->output_offset + my_offset) | |
9168 | /* Address of where the BL is located. */ | |
57e8b36a NC |
9169 | - (input_section->output_section->vma + input_section->output_offset |
9170 | + offset) | |
427bfd90 NC |
9171 | /* Addend in the relocation. */ |
9172 | - addend | |
9173 | /* Biassing for PC-relative addressing. */ | |
9174 | - 8; | |
252b5132 | 9175 | |
12a0a0fd | 9176 | insert_thumb_branch (input_bfd, ret_offset, hit_data - input_section->vma); |
252b5132 | 9177 | |
b34976b6 | 9178 | return TRUE; |
252b5132 RH |
9179 | } |
9180 | ||
a4fd1a8e | 9181 | /* Populate an Arm to Thumb stub. Returns the stub symbol. */ |
9b485d32 | 9182 | |
a4fd1a8e PB |
9183 | static struct elf_link_hash_entry * |
9184 | elf32_arm_create_thumb_stub (struct bfd_link_info * info, | |
07d6d2b8 AM |
9185 | const char * name, |
9186 | bfd * input_bfd, | |
9187 | bfd * output_bfd, | |
9188 | asection * sym_sec, | |
9189 | bfd_vma val, | |
9190 | asection * s, | |
9191 | char ** error_message) | |
252b5132 | 9192 | { |
dc810e39 | 9193 | bfd_vma my_offset; |
252b5132 | 9194 | long int ret_offset; |
bcbdc74c NC |
9195 | struct elf_link_hash_entry * myh; |
9196 | struct elf32_arm_link_hash_table * globals; | |
252b5132 | 9197 | |
f2a9dd69 | 9198 | myh = find_arm_glue (info, name, error_message); |
252b5132 | 9199 | if (myh == NULL) |
a4fd1a8e | 9200 | return NULL; |
252b5132 RH |
9201 | |
9202 | globals = elf32_arm_hash_table (info); | |
252b5132 RH |
9203 | BFD_ASSERT (globals != NULL); |
9204 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
9205 | ||
9206 | my_offset = myh->root.u.def.value; | |
252b5132 RH |
9207 | |
9208 | if ((my_offset & 0x01) == 0x01) | |
9209 | { | |
9210 | if (sym_sec != NULL | |
9211 | && sym_sec->owner != NULL | |
9212 | && !INTERWORK_FLAG (sym_sec->owner)) | |
9213 | { | |
4eca0228 | 9214 | _bfd_error_handler |
90b6238f AM |
9215 | (_("%pB(%s): warning: interworking not enabled;" |
9216 | " first occurrence: %pB: %s call to %s"), | |
9217 | sym_sec->owner, name, input_bfd, "ARM", "Thumb"); | |
252b5132 | 9218 | } |
9b485d32 | 9219 | |
252b5132 RH |
9220 | --my_offset; |
9221 | myh->root.u.def.value = my_offset; | |
9222 | ||
0e1862bb L |
9223 | if (bfd_link_pic (info) |
9224 | || globals->root.is_relocatable_executable | |
27e55c4d | 9225 | || globals->pic_veneer) |
8f6277f5 PB |
9226 | { |
9227 | /* For relocatable objects we can't use absolute addresses, | |
9228 | so construct the address from a relative offset. */ | |
9229 | /* TODO: If the offset is small it's probably worth | |
9230 | constructing the address with adds. */ | |
52ab56c2 PB |
9231 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t1p_ldr_insn, |
9232 | s->contents + my_offset); | |
9233 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t2p_add_pc_insn, | |
9234 | s->contents + my_offset + 4); | |
9235 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t3p_bx_r12_insn, | |
9236 | s->contents + my_offset + 8); | |
8f6277f5 PB |
9237 | /* Adjust the offset by 4 for the position of the add, |
9238 | and 8 for the pipeline offset. */ | |
9239 | ret_offset = (val - (s->output_offset | |
9240 | + s->output_section->vma | |
9241 | + my_offset + 12)) | |
9242 | | 1; | |
9243 | bfd_put_32 (output_bfd, ret_offset, | |
9244 | s->contents + my_offset + 12); | |
9245 | } | |
26079076 PB |
9246 | else if (globals->use_blx) |
9247 | { | |
9248 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t1v5_ldr_insn, | |
9249 | s->contents + my_offset); | |
9250 | ||
9251 | /* It's a thumb address. Add the low order bit. */ | |
9252 | bfd_put_32 (output_bfd, val | a2t2v5_func_addr_insn, | |
9253 | s->contents + my_offset + 4); | |
9254 | } | |
8f6277f5 PB |
9255 | else |
9256 | { | |
52ab56c2 PB |
9257 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t1_ldr_insn, |
9258 | s->contents + my_offset); | |
252b5132 | 9259 | |
52ab56c2 PB |
9260 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t2_bx_r12_insn, |
9261 | s->contents + my_offset + 4); | |
252b5132 | 9262 | |
8f6277f5 PB |
9263 | /* It's a thumb address. Add the low order bit. */ |
9264 | bfd_put_32 (output_bfd, val | a2t3_func_addr_insn, | |
9265 | s->contents + my_offset + 8); | |
8029a119 NC |
9266 | |
9267 | my_offset += 12; | |
8f6277f5 | 9268 | } |
252b5132 RH |
9269 | } |
9270 | ||
9271 | BFD_ASSERT (my_offset <= globals->arm_glue_size); | |
9272 | ||
a4fd1a8e PB |
9273 | return myh; |
9274 | } | |
9275 | ||
9276 | /* Arm code calling a Thumb function. */ | |
9277 | ||
9278 | static int | |
9279 | elf32_arm_to_thumb_stub (struct bfd_link_info * info, | |
07d6d2b8 AM |
9280 | const char * name, |
9281 | bfd * input_bfd, | |
9282 | bfd * output_bfd, | |
9283 | asection * input_section, | |
9284 | bfd_byte * hit_data, | |
9285 | asection * sym_sec, | |
9286 | bfd_vma offset, | |
9287 | bfd_signed_vma addend, | |
9288 | bfd_vma val, | |
f2a9dd69 | 9289 | char **error_message) |
a4fd1a8e PB |
9290 | { |
9291 | unsigned long int tmp; | |
9292 | bfd_vma my_offset; | |
9293 | asection * s; | |
9294 | long int ret_offset; | |
9295 | struct elf_link_hash_entry * myh; | |
9296 | struct elf32_arm_link_hash_table * globals; | |
9297 | ||
9298 | globals = elf32_arm_hash_table (info); | |
a4fd1a8e PB |
9299 | BFD_ASSERT (globals != NULL); |
9300 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
9301 | ||
3d4d4302 AM |
9302 | s = bfd_get_linker_section (globals->bfd_of_glue_owner, |
9303 | ARM2THUMB_GLUE_SECTION_NAME); | |
a4fd1a8e PB |
9304 | BFD_ASSERT (s != NULL); |
9305 | BFD_ASSERT (s->contents != NULL); | |
9306 | BFD_ASSERT (s->output_section != NULL); | |
9307 | ||
9308 | myh = elf32_arm_create_thumb_stub (info, name, input_bfd, output_bfd, | |
f2a9dd69 | 9309 | sym_sec, val, s, error_message); |
a4fd1a8e PB |
9310 | if (!myh) |
9311 | return FALSE; | |
9312 | ||
9313 | my_offset = myh->root.u.def.value; | |
252b5132 RH |
9314 | tmp = bfd_get_32 (input_bfd, hit_data); |
9315 | tmp = tmp & 0xFF000000; | |
9316 | ||
9b485d32 | 9317 | /* Somehow these are both 4 too far, so subtract 8. */ |
dc810e39 AM |
9318 | ret_offset = (s->output_offset |
9319 | + my_offset | |
9320 | + s->output_section->vma | |
9321 | - (input_section->output_offset | |
9322 | + input_section->output_section->vma | |
9323 | + offset + addend) | |
9324 | - 8); | |
9a5aca8c | 9325 | |
252b5132 RH |
9326 | tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF); |
9327 | ||
dc810e39 | 9328 | bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma); |
252b5132 | 9329 | |
b34976b6 | 9330 | return TRUE; |
252b5132 RH |
9331 | } |
9332 | ||
a4fd1a8e PB |
9333 | /* Populate Arm stub for an exported Thumb function. */ |
9334 | ||
9335 | static bfd_boolean | |
9336 | elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry *h, void * inf) | |
9337 | { | |
9338 | struct bfd_link_info * info = (struct bfd_link_info *) inf; | |
9339 | asection * s; | |
9340 | struct elf_link_hash_entry * myh; | |
9341 | struct elf32_arm_link_hash_entry *eh; | |
9342 | struct elf32_arm_link_hash_table * globals; | |
9343 | asection *sec; | |
9344 | bfd_vma val; | |
f2a9dd69 | 9345 | char *error_message; |
a4fd1a8e | 9346 | |
906e58ca | 9347 | eh = elf32_arm_hash_entry (h); |
a4fd1a8e PB |
9348 | /* Allocate stubs for exported Thumb functions on v4t. */ |
9349 | if (eh->export_glue == NULL) | |
9350 | return TRUE; | |
9351 | ||
9352 | globals = elf32_arm_hash_table (info); | |
a4fd1a8e PB |
9353 | BFD_ASSERT (globals != NULL); |
9354 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
9355 | ||
3d4d4302 AM |
9356 | s = bfd_get_linker_section (globals->bfd_of_glue_owner, |
9357 | ARM2THUMB_GLUE_SECTION_NAME); | |
a4fd1a8e PB |
9358 | BFD_ASSERT (s != NULL); |
9359 | BFD_ASSERT (s->contents != NULL); | |
9360 | BFD_ASSERT (s->output_section != NULL); | |
9361 | ||
9362 | sec = eh->export_glue->root.u.def.section; | |
0eaedd0e PB |
9363 | |
9364 | BFD_ASSERT (sec->output_section != NULL); | |
9365 | ||
a4fd1a8e PB |
9366 | val = eh->export_glue->root.u.def.value + sec->output_offset |
9367 | + sec->output_section->vma; | |
8029a119 | 9368 | |
a4fd1a8e PB |
9369 | myh = elf32_arm_create_thumb_stub (info, h->root.root.string, |
9370 | h->root.u.def.section->owner, | |
f2a9dd69 DJ |
9371 | globals->obfd, sec, val, s, |
9372 | &error_message); | |
a4fd1a8e PB |
9373 | BFD_ASSERT (myh); |
9374 | return TRUE; | |
9375 | } | |
9376 | ||
845b51d6 PB |
9377 | /* Populate ARMv4 BX veneers. Returns the absolute adress of the veneer. */ |
9378 | ||
9379 | static bfd_vma | |
9380 | elf32_arm_bx_glue (struct bfd_link_info * info, int reg) | |
9381 | { | |
9382 | bfd_byte *p; | |
9383 | bfd_vma glue_addr; | |
9384 | asection *s; | |
9385 | struct elf32_arm_link_hash_table *globals; | |
9386 | ||
9387 | globals = elf32_arm_hash_table (info); | |
845b51d6 PB |
9388 | BFD_ASSERT (globals != NULL); |
9389 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
9390 | ||
3d4d4302 AM |
9391 | s = bfd_get_linker_section (globals->bfd_of_glue_owner, |
9392 | ARM_BX_GLUE_SECTION_NAME); | |
845b51d6 PB |
9393 | BFD_ASSERT (s != NULL); |
9394 | BFD_ASSERT (s->contents != NULL); | |
9395 | BFD_ASSERT (s->output_section != NULL); | |
9396 | ||
9397 | BFD_ASSERT (globals->bx_glue_offset[reg] & 2); | |
9398 | ||
9399 | glue_addr = globals->bx_glue_offset[reg] & ~(bfd_vma)3; | |
9400 | ||
9401 | if ((globals->bx_glue_offset[reg] & 1) == 0) | |
9402 | { | |
9403 | p = s->contents + glue_addr; | |
9404 | bfd_put_32 (globals->obfd, armbx1_tst_insn + (reg << 16), p); | |
9405 | bfd_put_32 (globals->obfd, armbx2_moveq_insn + reg, p + 4); | |
9406 | bfd_put_32 (globals->obfd, armbx3_bx_insn + reg, p + 8); | |
9407 | globals->bx_glue_offset[reg] |= 1; | |
9408 | } | |
9409 | ||
9410 | return glue_addr + s->output_section->vma + s->output_offset; | |
9411 | } | |
9412 | ||
a4fd1a8e PB |
9413 | /* Generate Arm stubs for exported Thumb symbols. */ |
9414 | static void | |
906e58ca | 9415 | elf32_arm_begin_write_processing (bfd *abfd ATTRIBUTE_UNUSED, |
a4fd1a8e PB |
9416 | struct bfd_link_info *link_info) |
9417 | { | |
9418 | struct elf32_arm_link_hash_table * globals; | |
9419 | ||
8029a119 NC |
9420 | if (link_info == NULL) |
9421 | /* Ignore this if we are not called by the ELF backend linker. */ | |
a4fd1a8e PB |
9422 | return; |
9423 | ||
9424 | globals = elf32_arm_hash_table (link_info); | |
4dfe6ac6 NC |
9425 | if (globals == NULL) |
9426 | return; | |
9427 | ||
84c08195 PB |
9428 | /* If blx is available then exported Thumb symbols are OK and there is |
9429 | nothing to do. */ | |
a4fd1a8e PB |
9430 | if (globals->use_blx) |
9431 | return; | |
9432 | ||
9433 | elf_link_hash_traverse (&globals->root, elf32_arm_to_thumb_export_stub, | |
9434 | link_info); | |
9435 | } | |
9436 | ||
47beaa6a RS |
9437 | /* Reserve space for COUNT dynamic relocations in relocation selection |
9438 | SRELOC. */ | |
9439 | ||
9440 | static void | |
9441 | elf32_arm_allocate_dynrelocs (struct bfd_link_info *info, asection *sreloc, | |
9442 | bfd_size_type count) | |
9443 | { | |
9444 | struct elf32_arm_link_hash_table *htab; | |
9445 | ||
9446 | htab = elf32_arm_hash_table (info); | |
9447 | BFD_ASSERT (htab->root.dynamic_sections_created); | |
9448 | if (sreloc == NULL) | |
9449 | abort (); | |
9450 | sreloc->size += RELOC_SIZE (htab) * count; | |
9451 | } | |
9452 | ||
34e77a92 RS |
9453 | /* Reserve space for COUNT R_ARM_IRELATIVE relocations. If the link is |
9454 | dynamic, the relocations should go in SRELOC, otherwise they should | |
9455 | go in the special .rel.iplt section. */ | |
9456 | ||
9457 | static void | |
9458 | elf32_arm_allocate_irelocs (struct bfd_link_info *info, asection *sreloc, | |
9459 | bfd_size_type count) | |
9460 | { | |
9461 | struct elf32_arm_link_hash_table *htab; | |
9462 | ||
9463 | htab = elf32_arm_hash_table (info); | |
9464 | if (!htab->root.dynamic_sections_created) | |
9465 | htab->root.irelplt->size += RELOC_SIZE (htab) * count; | |
9466 | else | |
9467 | { | |
9468 | BFD_ASSERT (sreloc != NULL); | |
9469 | sreloc->size += RELOC_SIZE (htab) * count; | |
9470 | } | |
9471 | } | |
9472 | ||
47beaa6a RS |
9473 | /* Add relocation REL to the end of relocation section SRELOC. */ |
9474 | ||
9475 | static void | |
9476 | elf32_arm_add_dynreloc (bfd *output_bfd, struct bfd_link_info *info, | |
9477 | asection *sreloc, Elf_Internal_Rela *rel) | |
9478 | { | |
9479 | bfd_byte *loc; | |
9480 | struct elf32_arm_link_hash_table *htab; | |
9481 | ||
9482 | htab = elf32_arm_hash_table (info); | |
34e77a92 RS |
9483 | if (!htab->root.dynamic_sections_created |
9484 | && ELF32_R_TYPE (rel->r_info) == R_ARM_IRELATIVE) | |
9485 | sreloc = htab->root.irelplt; | |
47beaa6a RS |
9486 | if (sreloc == NULL) |
9487 | abort (); | |
9488 | loc = sreloc->contents; | |
9489 | loc += sreloc->reloc_count++ * RELOC_SIZE (htab); | |
9490 | if (sreloc->reloc_count * RELOC_SIZE (htab) > sreloc->size) | |
9491 | abort (); | |
9492 | SWAP_RELOC_OUT (htab) (output_bfd, rel, loc); | |
9493 | } | |
9494 | ||
34e77a92 RS |
9495 | /* Allocate room for a PLT entry described by ROOT_PLT and ARM_PLT. |
9496 | IS_IPLT_ENTRY says whether the entry belongs to .iplt rather than | |
9497 | to .plt. */ | |
9498 | ||
9499 | static void | |
9500 | elf32_arm_allocate_plt_entry (struct bfd_link_info *info, | |
9501 | bfd_boolean is_iplt_entry, | |
9502 | union gotplt_union *root_plt, | |
9503 | struct arm_plt_info *arm_plt) | |
9504 | { | |
9505 | struct elf32_arm_link_hash_table *htab; | |
9506 | asection *splt; | |
9507 | asection *sgotplt; | |
9508 | ||
9509 | htab = elf32_arm_hash_table (info); | |
9510 | ||
9511 | if (is_iplt_entry) | |
9512 | { | |
9513 | splt = htab->root.iplt; | |
9514 | sgotplt = htab->root.igotplt; | |
9515 | ||
99059e56 RM |
9516 | /* NaCl uses a special first entry in .iplt too. */ |
9517 | if (htab->nacl_p && splt->size == 0) | |
9518 | splt->size += htab->plt_header_size; | |
9519 | ||
34e77a92 RS |
9520 | /* Allocate room for an R_ARM_IRELATIVE relocation in .rel.iplt. */ |
9521 | elf32_arm_allocate_irelocs (info, htab->root.irelplt, 1); | |
9522 | } | |
9523 | else | |
9524 | { | |
9525 | splt = htab->root.splt; | |
9526 | sgotplt = htab->root.sgotplt; | |
9527 | ||
7801f98f CL |
9528 | if (htab->fdpic_p) |
9529 | { | |
9530 | /* Allocate room for R_ARM_FUNCDESC_VALUE. */ | |
9531 | /* For lazy binding, relocations will be put into .rel.plt, in | |
9532 | .rel.got otherwise. */ | |
9533 | /* FIXME: today we don't support lazy binding so put it in .rel.got */ | |
9534 | if (info->flags & DF_BIND_NOW) | |
9535 | elf32_arm_allocate_dynrelocs (info, htab->root.srelgot, 1); | |
9536 | else | |
9537 | elf32_arm_allocate_dynrelocs (info, htab->root.srelplt, 1); | |
9538 | } | |
9539 | else | |
9540 | { | |
9541 | /* Allocate room for an R_JUMP_SLOT relocation in .rel.plt. */ | |
9542 | elf32_arm_allocate_dynrelocs (info, htab->root.srelplt, 1); | |
9543 | } | |
34e77a92 RS |
9544 | |
9545 | /* If this is the first .plt entry, make room for the special | |
9546 | first entry. */ | |
9547 | if (splt->size == 0) | |
9548 | splt->size += htab->plt_header_size; | |
9f19ab6d WN |
9549 | |
9550 | htab->next_tls_desc_index++; | |
34e77a92 RS |
9551 | } |
9552 | ||
9553 | /* Allocate the PLT entry itself, including any leading Thumb stub. */ | |
9554 | if (elf32_arm_plt_needs_thumb_stub_p (info, arm_plt)) | |
9555 | splt->size += PLT_THUMB_STUB_SIZE; | |
9556 | root_plt->offset = splt->size; | |
9557 | splt->size += htab->plt_entry_size; | |
9558 | ||
9559 | if (!htab->symbian_p) | |
9560 | { | |
9561 | /* We also need to make an entry in the .got.plt section, which | |
9562 | will be placed in the .got section by the linker script. */ | |
9f19ab6d WN |
9563 | if (is_iplt_entry) |
9564 | arm_plt->got_offset = sgotplt->size; | |
9565 | else | |
9566 | arm_plt->got_offset = sgotplt->size - 8 * htab->num_tls_desc; | |
7801f98f CL |
9567 | if (htab->fdpic_p) |
9568 | /* Function descriptor takes 64 bits in GOT. */ | |
4b24dd1a | 9569 | sgotplt->size += 8; |
7801f98f CL |
9570 | else |
9571 | sgotplt->size += 4; | |
34e77a92 RS |
9572 | } |
9573 | } | |
9574 | ||
b38cadfb NC |
9575 | static bfd_vma |
9576 | arm_movw_immediate (bfd_vma value) | |
9577 | { | |
9578 | return (value & 0x00000fff) | ((value & 0x0000f000) << 4); | |
9579 | } | |
9580 | ||
9581 | static bfd_vma | |
9582 | arm_movt_immediate (bfd_vma value) | |
9583 | { | |
9584 | return ((value & 0x0fff0000) >> 16) | ((value & 0xf0000000) >> 12); | |
9585 | } | |
9586 | ||
34e77a92 RS |
9587 | /* Fill in a PLT entry and its associated GOT slot. If DYNINDX == -1, |
9588 | the entry lives in .iplt and resolves to (*SYM_VALUE)(). | |
9589 | Otherwise, DYNINDX is the index of the symbol in the dynamic | |
9590 | symbol table and SYM_VALUE is undefined. | |
9591 | ||
9592 | ROOT_PLT points to the offset of the PLT entry from the start of its | |
9593 | section (.iplt or .plt). ARM_PLT points to the symbol's ARM-specific | |
57460bcf | 9594 | bookkeeping information. |
34e77a92 | 9595 | |
57460bcf NC |
9596 | Returns FALSE if there was a problem. */ |
9597 | ||
9598 | static bfd_boolean | |
34e77a92 RS |
9599 | elf32_arm_populate_plt_entry (bfd *output_bfd, struct bfd_link_info *info, |
9600 | union gotplt_union *root_plt, | |
9601 | struct arm_plt_info *arm_plt, | |
9602 | int dynindx, bfd_vma sym_value) | |
9603 | { | |
9604 | struct elf32_arm_link_hash_table *htab; | |
9605 | asection *sgot; | |
9606 | asection *splt; | |
9607 | asection *srel; | |
9608 | bfd_byte *loc; | |
9609 | bfd_vma plt_index; | |
9610 | Elf_Internal_Rela rel; | |
9611 | bfd_vma plt_header_size; | |
9612 | bfd_vma got_header_size; | |
9613 | ||
9614 | htab = elf32_arm_hash_table (info); | |
9615 | ||
9616 | /* Pick the appropriate sections and sizes. */ | |
9617 | if (dynindx == -1) | |
9618 | { | |
9619 | splt = htab->root.iplt; | |
9620 | sgot = htab->root.igotplt; | |
9621 | srel = htab->root.irelplt; | |
9622 | ||
9623 | /* There are no reserved entries in .igot.plt, and no special | |
9624 | first entry in .iplt. */ | |
9625 | got_header_size = 0; | |
9626 | plt_header_size = 0; | |
9627 | } | |
9628 | else | |
9629 | { | |
9630 | splt = htab->root.splt; | |
9631 | sgot = htab->root.sgotplt; | |
9632 | srel = htab->root.srelplt; | |
9633 | ||
9634 | got_header_size = get_elf_backend_data (output_bfd)->got_header_size; | |
9635 | plt_header_size = htab->plt_header_size; | |
9636 | } | |
9637 | BFD_ASSERT (splt != NULL && srel != NULL); | |
9638 | ||
9639 | /* Fill in the entry in the procedure linkage table. */ | |
9640 | if (htab->symbian_p) | |
9641 | { | |
9642 | BFD_ASSERT (dynindx >= 0); | |
9643 | put_arm_insn (htab, output_bfd, | |
9644 | elf32_arm_symbian_plt_entry[0], | |
9645 | splt->contents + root_plt->offset); | |
9646 | bfd_put_32 (output_bfd, | |
9647 | elf32_arm_symbian_plt_entry[1], | |
9648 | splt->contents + root_plt->offset + 4); | |
9649 | ||
9650 | /* Fill in the entry in the .rel.plt section. */ | |
9651 | rel.r_offset = (splt->output_section->vma | |
9652 | + splt->output_offset | |
9653 | + root_plt->offset + 4); | |
9654 | rel.r_info = ELF32_R_INFO (dynindx, R_ARM_GLOB_DAT); | |
9655 | ||
9656 | /* Get the index in the procedure linkage table which | |
9657 | corresponds to this symbol. This is the index of this symbol | |
9658 | in all the symbols for which we are making plt entries. The | |
9659 | first entry in the procedure linkage table is reserved. */ | |
9660 | plt_index = ((root_plt->offset - plt_header_size) | |
9661 | / htab->plt_entry_size); | |
9662 | } | |
9663 | else | |
9664 | { | |
9665 | bfd_vma got_offset, got_address, plt_address; | |
9666 | bfd_vma got_displacement, initial_got_entry; | |
9667 | bfd_byte * ptr; | |
9668 | ||
9669 | BFD_ASSERT (sgot != NULL); | |
9670 | ||
9671 | /* Get the offset into the .(i)got.plt table of the entry that | |
9672 | corresponds to this function. */ | |
9673 | got_offset = (arm_plt->got_offset & -2); | |
9674 | ||
9675 | /* Get the index in the procedure linkage table which | |
9676 | corresponds to this symbol. This is the index of this symbol | |
9677 | in all the symbols for which we are making plt entries. | |
9678 | After the reserved .got.plt entries, all symbols appear in | |
9679 | the same order as in .plt. */ | |
7801f98f | 9680 | if (htab->fdpic_p) |
4b24dd1a AM |
9681 | /* Function descriptor takes 8 bytes. */ |
9682 | plt_index = (got_offset - got_header_size) / 8; | |
7801f98f | 9683 | else |
4b24dd1a | 9684 | plt_index = (got_offset - got_header_size) / 4; |
34e77a92 RS |
9685 | |
9686 | /* Calculate the address of the GOT entry. */ | |
9687 | got_address = (sgot->output_section->vma | |
9688 | + sgot->output_offset | |
9689 | + got_offset); | |
9690 | ||
9691 | /* ...and the address of the PLT entry. */ | |
9692 | plt_address = (splt->output_section->vma | |
9693 | + splt->output_offset | |
9694 | + root_plt->offset); | |
9695 | ||
9696 | ptr = splt->contents + root_plt->offset; | |
0e1862bb | 9697 | if (htab->vxworks_p && bfd_link_pic (info)) |
34e77a92 RS |
9698 | { |
9699 | unsigned int i; | |
9700 | bfd_vma val; | |
9701 | ||
9702 | for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4) | |
9703 | { | |
9704 | val = elf32_arm_vxworks_shared_plt_entry[i]; | |
9705 | if (i == 2) | |
9706 | val |= got_address - sgot->output_section->vma; | |
9707 | if (i == 5) | |
9708 | val |= plt_index * RELOC_SIZE (htab); | |
9709 | if (i == 2 || i == 5) | |
9710 | bfd_put_32 (output_bfd, val, ptr); | |
9711 | else | |
9712 | put_arm_insn (htab, output_bfd, val, ptr); | |
9713 | } | |
9714 | } | |
9715 | else if (htab->vxworks_p) | |
9716 | { | |
9717 | unsigned int i; | |
9718 | bfd_vma val; | |
9719 | ||
9720 | for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4) | |
9721 | { | |
9722 | val = elf32_arm_vxworks_exec_plt_entry[i]; | |
9723 | if (i == 2) | |
9724 | val |= got_address; | |
9725 | if (i == 4) | |
9726 | val |= 0xffffff & -((root_plt->offset + i * 4 + 8) >> 2); | |
9727 | if (i == 5) | |
9728 | val |= plt_index * RELOC_SIZE (htab); | |
9729 | if (i == 2 || i == 5) | |
9730 | bfd_put_32 (output_bfd, val, ptr); | |
9731 | else | |
9732 | put_arm_insn (htab, output_bfd, val, ptr); | |
9733 | } | |
9734 | ||
9735 | loc = (htab->srelplt2->contents | |
9736 | + (plt_index * 2 + 1) * RELOC_SIZE (htab)); | |
9737 | ||
9738 | /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation | |
9739 | referencing the GOT for this PLT entry. */ | |
9740 | rel.r_offset = plt_address + 8; | |
9741 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); | |
9742 | rel.r_addend = got_offset; | |
9743 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
9744 | loc += RELOC_SIZE (htab); | |
9745 | ||
9746 | /* Create the R_ARM_ABS32 relocation referencing the | |
9747 | beginning of the PLT for this GOT entry. */ | |
9748 | rel.r_offset = got_address; | |
9749 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32); | |
9750 | rel.r_addend = 0; | |
9751 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
9752 | } | |
b38cadfb NC |
9753 | else if (htab->nacl_p) |
9754 | { | |
9755 | /* Calculate the displacement between the PLT slot and the | |
9756 | common tail that's part of the special initial PLT slot. */ | |
6034aab8 | 9757 | int32_t tail_displacement |
b38cadfb NC |
9758 | = ((splt->output_section->vma + splt->output_offset |
9759 | + ARM_NACL_PLT_TAIL_OFFSET) | |
9760 | - (plt_address + htab->plt_entry_size + 4)); | |
9761 | BFD_ASSERT ((tail_displacement & 3) == 0); | |
9762 | tail_displacement >>= 2; | |
9763 | ||
9764 | BFD_ASSERT ((tail_displacement & 0xff000000) == 0 | |
9765 | || (-tail_displacement & 0xff000000) == 0); | |
9766 | ||
9767 | /* Calculate the displacement between the PLT slot and the entry | |
9768 | in the GOT. The offset accounts for the value produced by | |
9769 | adding to pc in the penultimate instruction of the PLT stub. */ | |
6034aab8 | 9770 | got_displacement = (got_address |
99059e56 | 9771 | - (plt_address + htab->plt_entry_size)); |
b38cadfb NC |
9772 | |
9773 | /* NaCl does not support interworking at all. */ | |
9774 | BFD_ASSERT (!elf32_arm_plt_needs_thumb_stub_p (info, arm_plt)); | |
9775 | ||
9776 | put_arm_insn (htab, output_bfd, | |
9777 | elf32_arm_nacl_plt_entry[0] | |
9778 | | arm_movw_immediate (got_displacement), | |
9779 | ptr + 0); | |
9780 | put_arm_insn (htab, output_bfd, | |
9781 | elf32_arm_nacl_plt_entry[1] | |
9782 | | arm_movt_immediate (got_displacement), | |
9783 | ptr + 4); | |
9784 | put_arm_insn (htab, output_bfd, | |
9785 | elf32_arm_nacl_plt_entry[2], | |
9786 | ptr + 8); | |
9787 | put_arm_insn (htab, output_bfd, | |
9788 | elf32_arm_nacl_plt_entry[3] | |
9789 | | (tail_displacement & 0x00ffffff), | |
9790 | ptr + 12); | |
9791 | } | |
7801f98f CL |
9792 | else if (htab->fdpic_p) |
9793 | { | |
59029f57 CL |
9794 | const bfd_vma *plt_entry = using_thumb_only(htab) |
9795 | ? elf32_arm_fdpic_thumb_plt_entry | |
9796 | : elf32_arm_fdpic_plt_entry; | |
9797 | ||
7801f98f CL |
9798 | /* Fill-up Thumb stub if needed. */ |
9799 | if (elf32_arm_plt_needs_thumb_stub_p (info, arm_plt)) | |
9800 | { | |
9801 | put_thumb_insn (htab, output_bfd, | |
9802 | elf32_arm_plt_thumb_stub[0], ptr - 4); | |
9803 | put_thumb_insn (htab, output_bfd, | |
9804 | elf32_arm_plt_thumb_stub[1], ptr - 2); | |
9805 | } | |
59029f57 CL |
9806 | /* As we are using 32 bit instructions even for the Thumb |
9807 | version, we have to use 'put_arm_insn' instead of | |
9808 | 'put_thumb_insn'. */ | |
9809 | put_arm_insn(htab, output_bfd, plt_entry[0], ptr + 0); | |
9810 | put_arm_insn(htab, output_bfd, plt_entry[1], ptr + 4); | |
9811 | put_arm_insn(htab, output_bfd, plt_entry[2], ptr + 8); | |
9812 | put_arm_insn(htab, output_bfd, plt_entry[3], ptr + 12); | |
7801f98f CL |
9813 | bfd_put_32 (output_bfd, got_offset, ptr + 16); |
9814 | ||
9815 | if (!(info->flags & DF_BIND_NOW)) | |
9816 | { | |
9817 | /* funcdesc_value_reloc_offset. */ | |
9818 | bfd_put_32 (output_bfd, | |
9819 | htab->root.srelplt->reloc_count * RELOC_SIZE (htab), | |
9820 | ptr + 20); | |
59029f57 CL |
9821 | put_arm_insn(htab, output_bfd, plt_entry[6], ptr + 24); |
9822 | put_arm_insn(htab, output_bfd, plt_entry[7], ptr + 28); | |
9823 | put_arm_insn(htab, output_bfd, plt_entry[8], ptr + 32); | |
9824 | put_arm_insn(htab, output_bfd, plt_entry[9], ptr + 36); | |
7801f98f CL |
9825 | } |
9826 | } | |
57460bcf NC |
9827 | else if (using_thumb_only (htab)) |
9828 | { | |
eed94f8f | 9829 | /* PR ld/16017: Generate thumb only PLT entries. */ |
469a3493 | 9830 | if (!using_thumb2 (htab)) |
eed94f8f NC |
9831 | { |
9832 | /* FIXME: We ought to be able to generate thumb-1 PLT | |
9833 | instructions... */ | |
90b6238f | 9834 | _bfd_error_handler (_("%pB: warning: thumb-1 mode PLT generation not currently supported"), |
eed94f8f NC |
9835 | output_bfd); |
9836 | return FALSE; | |
9837 | } | |
57460bcf | 9838 | |
eed94f8f NC |
9839 | /* Calculate the displacement between the PLT slot and the entry in |
9840 | the GOT. The 12-byte offset accounts for the value produced by | |
9841 | adding to pc in the 3rd instruction of the PLT stub. */ | |
9842 | got_displacement = got_address - (plt_address + 12); | |
9843 | ||
9844 | /* As we are using 32 bit instructions we have to use 'put_arm_insn' | |
9845 | instead of 'put_thumb_insn'. */ | |
9846 | put_arm_insn (htab, output_bfd, | |
9847 | elf32_thumb2_plt_entry[0] | |
9848 | | ((got_displacement & 0x000000ff) << 16) | |
9849 | | ((got_displacement & 0x00000700) << 20) | |
9850 | | ((got_displacement & 0x00000800) >> 1) | |
9851 | | ((got_displacement & 0x0000f000) >> 12), | |
9852 | ptr + 0); | |
9853 | put_arm_insn (htab, output_bfd, | |
9854 | elf32_thumb2_plt_entry[1] | |
9855 | | ((got_displacement & 0x00ff0000) ) | |
9856 | | ((got_displacement & 0x07000000) << 4) | |
9857 | | ((got_displacement & 0x08000000) >> 17) | |
9858 | | ((got_displacement & 0xf0000000) >> 28), | |
9859 | ptr + 4); | |
9860 | put_arm_insn (htab, output_bfd, | |
9861 | elf32_thumb2_plt_entry[2], | |
9862 | ptr + 8); | |
9863 | put_arm_insn (htab, output_bfd, | |
9864 | elf32_thumb2_plt_entry[3], | |
9865 | ptr + 12); | |
57460bcf | 9866 | } |
34e77a92 RS |
9867 | else |
9868 | { | |
9869 | /* Calculate the displacement between the PLT slot and the | |
9870 | entry in the GOT. The eight-byte offset accounts for the | |
9871 | value produced by adding to pc in the first instruction | |
9872 | of the PLT stub. */ | |
9873 | got_displacement = got_address - (plt_address + 8); | |
9874 | ||
34e77a92 RS |
9875 | if (elf32_arm_plt_needs_thumb_stub_p (info, arm_plt)) |
9876 | { | |
9877 | put_thumb_insn (htab, output_bfd, | |
9878 | elf32_arm_plt_thumb_stub[0], ptr - 4); | |
9879 | put_thumb_insn (htab, output_bfd, | |
9880 | elf32_arm_plt_thumb_stub[1], ptr - 2); | |
9881 | } | |
9882 | ||
1db37fe6 YG |
9883 | if (!elf32_arm_use_long_plt_entry) |
9884 | { | |
9885 | BFD_ASSERT ((got_displacement & 0xf0000000) == 0); | |
9886 | ||
9887 | put_arm_insn (htab, output_bfd, | |
9888 | elf32_arm_plt_entry_short[0] | |
9889 | | ((got_displacement & 0x0ff00000) >> 20), | |
9890 | ptr + 0); | |
9891 | put_arm_insn (htab, output_bfd, | |
9892 | elf32_arm_plt_entry_short[1] | |
9893 | | ((got_displacement & 0x000ff000) >> 12), | |
9894 | ptr+ 4); | |
9895 | put_arm_insn (htab, output_bfd, | |
9896 | elf32_arm_plt_entry_short[2] | |
9897 | | (got_displacement & 0x00000fff), | |
9898 | ptr + 8); | |
34e77a92 | 9899 | #ifdef FOUR_WORD_PLT |
1db37fe6 | 9900 | bfd_put_32 (output_bfd, elf32_arm_plt_entry_short[3], ptr + 12); |
34e77a92 | 9901 | #endif |
1db37fe6 YG |
9902 | } |
9903 | else | |
9904 | { | |
9905 | put_arm_insn (htab, output_bfd, | |
9906 | elf32_arm_plt_entry_long[0] | |
9907 | | ((got_displacement & 0xf0000000) >> 28), | |
9908 | ptr + 0); | |
9909 | put_arm_insn (htab, output_bfd, | |
9910 | elf32_arm_plt_entry_long[1] | |
9911 | | ((got_displacement & 0x0ff00000) >> 20), | |
9912 | ptr + 4); | |
9913 | put_arm_insn (htab, output_bfd, | |
9914 | elf32_arm_plt_entry_long[2] | |
9915 | | ((got_displacement & 0x000ff000) >> 12), | |
9916 | ptr+ 8); | |
9917 | put_arm_insn (htab, output_bfd, | |
9918 | elf32_arm_plt_entry_long[3] | |
9919 | | (got_displacement & 0x00000fff), | |
9920 | ptr + 12); | |
9921 | } | |
34e77a92 RS |
9922 | } |
9923 | ||
9924 | /* Fill in the entry in the .rel(a).(i)plt section. */ | |
9925 | rel.r_offset = got_address; | |
9926 | rel.r_addend = 0; | |
9927 | if (dynindx == -1) | |
9928 | { | |
9929 | /* .igot.plt entries use IRELATIVE relocations against SYM_VALUE. | |
9930 | The dynamic linker or static executable then calls SYM_VALUE | |
9931 | to determine the correct run-time value of the .igot.plt entry. */ | |
9932 | rel.r_info = ELF32_R_INFO (0, R_ARM_IRELATIVE); | |
9933 | initial_got_entry = sym_value; | |
9934 | } | |
9935 | else | |
9936 | { | |
7801f98f CL |
9937 | /* For FDPIC we will have to resolve a R_ARM_FUNCDESC_VALUE |
9938 | used by PLT entry. */ | |
9939 | if (htab->fdpic_p) | |
9940 | { | |
9941 | rel.r_info = ELF32_R_INFO (dynindx, R_ARM_FUNCDESC_VALUE); | |
9942 | initial_got_entry = 0; | |
9943 | } | |
9944 | else | |
9945 | { | |
9946 | rel.r_info = ELF32_R_INFO (dynindx, R_ARM_JUMP_SLOT); | |
9947 | initial_got_entry = (splt->output_section->vma | |
9948 | + splt->output_offset); | |
9949 | } | |
34e77a92 RS |
9950 | } |
9951 | ||
9952 | /* Fill in the entry in the global offset table. */ | |
9953 | bfd_put_32 (output_bfd, initial_got_entry, | |
9954 | sgot->contents + got_offset); | |
7801f98f CL |
9955 | |
9956 | if (htab->fdpic_p && !(info->flags & DF_BIND_NOW)) | |
9957 | { | |
9958 | /* Setup initial funcdesc value. */ | |
9959 | /* FIXME: we don't support lazy binding because there is a | |
9960 | race condition between both words getting written and | |
9961 | some other thread attempting to read them. The ARM | |
9962 | architecture does not have an atomic 64 bit load/store | |
9963 | instruction that could be used to prevent it; it is | |
9964 | recommended that threaded FDPIC applications run with the | |
9965 | LD_BIND_NOW environment variable set. */ | |
9966 | bfd_put_32(output_bfd, plt_address + 0x18, | |
9967 | sgot->contents + got_offset); | |
9968 | bfd_put_32(output_bfd, -1 /*TODO*/, | |
9969 | sgot->contents + got_offset + 4); | |
9970 | } | |
34e77a92 RS |
9971 | } |
9972 | ||
aba8c3de WN |
9973 | if (dynindx == -1) |
9974 | elf32_arm_add_dynreloc (output_bfd, info, srel, &rel); | |
9975 | else | |
9976 | { | |
7801f98f CL |
9977 | if (htab->fdpic_p) |
9978 | { | |
9979 | /* For FDPIC we put PLT relocationss into .rel.got when not | |
9980 | lazy binding otherwise we put them in .rel.plt. For now, | |
9981 | we don't support lazy binding so put it in .rel.got. */ | |
9982 | if (info->flags & DF_BIND_NOW) | |
9983 | elf32_arm_add_dynreloc(output_bfd, info, htab->root.srelgot, &rel); | |
9984 | else | |
9985 | elf32_arm_add_dynreloc(output_bfd, info, htab->root.srelplt, &rel); | |
9986 | } | |
9987 | else | |
9988 | { | |
9989 | loc = srel->contents + plt_index * RELOC_SIZE (htab); | |
9990 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
9991 | } | |
aba8c3de | 9992 | } |
57460bcf NC |
9993 | |
9994 | return TRUE; | |
34e77a92 RS |
9995 | } |
9996 | ||
eb043451 PB |
9997 | /* Some relocations map to different relocations depending on the |
9998 | target. Return the real relocation. */ | |
8029a119 | 9999 | |
eb043451 PB |
10000 | static int |
10001 | arm_real_reloc_type (struct elf32_arm_link_hash_table * globals, | |
10002 | int r_type) | |
10003 | { | |
10004 | switch (r_type) | |
10005 | { | |
10006 | case R_ARM_TARGET1: | |
10007 | if (globals->target1_is_rel) | |
10008 | return R_ARM_REL32; | |
10009 | else | |
10010 | return R_ARM_ABS32; | |
10011 | ||
10012 | case R_ARM_TARGET2: | |
10013 | return globals->target2_reloc; | |
10014 | ||
10015 | default: | |
10016 | return r_type; | |
10017 | } | |
10018 | } | |
eb043451 | 10019 | |
ba93b8ac DJ |
10020 | /* Return the base VMA address which should be subtracted from real addresses |
10021 | when resolving @dtpoff relocation. | |
10022 | This is PT_TLS segment p_vaddr. */ | |
10023 | ||
10024 | static bfd_vma | |
10025 | dtpoff_base (struct bfd_link_info *info) | |
10026 | { | |
10027 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
10028 | if (elf_hash_table (info)->tls_sec == NULL) | |
10029 | return 0; | |
10030 | return elf_hash_table (info)->tls_sec->vma; | |
10031 | } | |
10032 | ||
10033 | /* Return the relocation value for @tpoff relocation | |
10034 | if STT_TLS virtual address is ADDRESS. */ | |
10035 | ||
10036 | static bfd_vma | |
10037 | tpoff (struct bfd_link_info *info, bfd_vma address) | |
10038 | { | |
10039 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
10040 | bfd_vma base; | |
10041 | ||
10042 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
10043 | if (htab->tls_sec == NULL) | |
10044 | return 0; | |
10045 | base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power); | |
10046 | return address - htab->tls_sec->vma + base; | |
10047 | } | |
10048 | ||
00a97672 RS |
10049 | /* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA. |
10050 | VALUE is the relocation value. */ | |
10051 | ||
10052 | static bfd_reloc_status_type | |
10053 | elf32_arm_abs12_reloc (bfd *abfd, void *data, bfd_vma value) | |
10054 | { | |
10055 | if (value > 0xfff) | |
10056 | return bfd_reloc_overflow; | |
10057 | ||
10058 | value |= bfd_get_32 (abfd, data) & 0xfffff000; | |
10059 | bfd_put_32 (abfd, value, data); | |
10060 | return bfd_reloc_ok; | |
10061 | } | |
10062 | ||
0855e32b NS |
10063 | /* Handle TLS relaxations. Relaxing is possible for symbols that use |
10064 | R_ARM_GOTDESC, R_ARM_{,THM_}TLS_CALL or | |
10065 | R_ARM_{,THM_}TLS_DESCSEQ relocations, during a static link. | |
10066 | ||
10067 | Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller | |
10068 | is to then call final_link_relocate. Return other values in the | |
62672b10 NS |
10069 | case of error. |
10070 | ||
10071 | FIXME:When --emit-relocs is in effect, we'll emit relocs describing | |
10072 | the pre-relaxed code. It would be nice if the relocs were updated | |
10073 | to match the optimization. */ | |
0855e32b | 10074 | |
b38cadfb | 10075 | static bfd_reloc_status_type |
0855e32b | 10076 | elf32_arm_tls_relax (struct elf32_arm_link_hash_table *globals, |
b38cadfb | 10077 | bfd *input_bfd, asection *input_sec, bfd_byte *contents, |
0855e32b NS |
10078 | Elf_Internal_Rela *rel, unsigned long is_local) |
10079 | { | |
10080 | unsigned long insn; | |
b38cadfb | 10081 | |
0855e32b NS |
10082 | switch (ELF32_R_TYPE (rel->r_info)) |
10083 | { | |
10084 | default: | |
10085 | return bfd_reloc_notsupported; | |
b38cadfb | 10086 | |
0855e32b NS |
10087 | case R_ARM_TLS_GOTDESC: |
10088 | if (is_local) | |
10089 | insn = 0; | |
10090 | else | |
10091 | { | |
10092 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
10093 | if (insn & 1) | |
10094 | insn -= 5; /* THUMB */ | |
10095 | else | |
10096 | insn -= 8; /* ARM */ | |
10097 | } | |
10098 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); | |
10099 | return bfd_reloc_continue; | |
10100 | ||
10101 | case R_ARM_THM_TLS_DESCSEQ: | |
10102 | /* Thumb insn. */ | |
10103 | insn = bfd_get_16 (input_bfd, contents + rel->r_offset); | |
10104 | if ((insn & 0xff78) == 0x4478) /* add rx, pc */ | |
10105 | { | |
10106 | if (is_local) | |
10107 | /* nop */ | |
10108 | bfd_put_16 (input_bfd, 0x46c0, contents + rel->r_offset); | |
10109 | } | |
10110 | else if ((insn & 0xffc0) == 0x6840) /* ldr rx,[ry,#4] */ | |
10111 | { | |
10112 | if (is_local) | |
10113 | /* nop */ | |
10114 | bfd_put_16 (input_bfd, 0x46c0, contents + rel->r_offset); | |
10115 | else | |
10116 | /* ldr rx,[ry] */ | |
10117 | bfd_put_16 (input_bfd, insn & 0xf83f, contents + rel->r_offset); | |
10118 | } | |
10119 | else if ((insn & 0xff87) == 0x4780) /* blx rx */ | |
10120 | { | |
10121 | if (is_local) | |
10122 | /* nop */ | |
10123 | bfd_put_16 (input_bfd, 0x46c0, contents + rel->r_offset); | |
10124 | else | |
10125 | /* mov r0, rx */ | |
10126 | bfd_put_16 (input_bfd, 0x4600 | (insn & 0x78), | |
10127 | contents + rel->r_offset); | |
10128 | } | |
10129 | else | |
10130 | { | |
10131 | if ((insn & 0xf000) == 0xf000 || (insn & 0xf800) == 0xe800) | |
10132 | /* It's a 32 bit instruction, fetch the rest of it for | |
10133 | error generation. */ | |
10134 | insn = (insn << 16) | |
10135 | | bfd_get_16 (input_bfd, contents + rel->r_offset + 2); | |
4eca0228 | 10136 | _bfd_error_handler |
695344c0 | 10137 | /* xgettext:c-format */ |
2dcf00ce | 10138 | (_("%pB(%pA+%#" PRIx64 "): " |
90b6238f AM |
10139 | "unexpected %s instruction '%#lx' in TLS trampoline"), |
10140 | input_bfd, input_sec, (uint64_t) rel->r_offset, | |
10141 | "Thumb", insn); | |
0855e32b NS |
10142 | return bfd_reloc_notsupported; |
10143 | } | |
10144 | break; | |
b38cadfb | 10145 | |
0855e32b NS |
10146 | case R_ARM_TLS_DESCSEQ: |
10147 | /* arm insn. */ | |
10148 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
10149 | if ((insn & 0xffff0ff0) == 0xe08f0000) /* add rx,pc,ry */ | |
10150 | { | |
10151 | if (is_local) | |
10152 | /* mov rx, ry */ | |
10153 | bfd_put_32 (input_bfd, 0xe1a00000 | (insn & 0xffff), | |
10154 | contents + rel->r_offset); | |
10155 | } | |
10156 | else if ((insn & 0xfff00fff) == 0xe5900004) /* ldr rx,[ry,#4]*/ | |
10157 | { | |
10158 | if (is_local) | |
10159 | /* nop */ | |
10160 | bfd_put_32 (input_bfd, 0xe1a00000, contents + rel->r_offset); | |
10161 | else | |
10162 | /* ldr rx,[ry] */ | |
10163 | bfd_put_32 (input_bfd, insn & 0xfffff000, | |
10164 | contents + rel->r_offset); | |
10165 | } | |
10166 | else if ((insn & 0xfffffff0) == 0xe12fff30) /* blx rx */ | |
10167 | { | |
10168 | if (is_local) | |
10169 | /* nop */ | |
10170 | bfd_put_32 (input_bfd, 0xe1a00000, contents + rel->r_offset); | |
10171 | else | |
10172 | /* mov r0, rx */ | |
10173 | bfd_put_32 (input_bfd, 0xe1a00000 | (insn & 0xf), | |
10174 | contents + rel->r_offset); | |
10175 | } | |
10176 | else | |
10177 | { | |
4eca0228 | 10178 | _bfd_error_handler |
695344c0 | 10179 | /* xgettext:c-format */ |
2dcf00ce | 10180 | (_("%pB(%pA+%#" PRIx64 "): " |
90b6238f AM |
10181 | "unexpected %s instruction '%#lx' in TLS trampoline"), |
10182 | input_bfd, input_sec, (uint64_t) rel->r_offset, | |
10183 | "ARM", insn); | |
0855e32b NS |
10184 | return bfd_reloc_notsupported; |
10185 | } | |
10186 | break; | |
10187 | ||
10188 | case R_ARM_TLS_CALL: | |
10189 | /* GD->IE relaxation, turn the instruction into 'nop' or | |
10190 | 'ldr r0, [pc,r0]' */ | |
10191 | insn = is_local ? 0xe1a00000 : 0xe79f0000; | |
10192 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); | |
10193 | break; | |
b38cadfb | 10194 | |
0855e32b | 10195 | case R_ARM_THM_TLS_CALL: |
6a631e86 | 10196 | /* GD->IE relaxation. */ |
0855e32b NS |
10197 | if (!is_local) |
10198 | /* add r0,pc; ldr r0, [r0] */ | |
10199 | insn = 0x44786800; | |
60a019a0 | 10200 | else if (using_thumb2 (globals)) |
0855e32b NS |
10201 | /* nop.w */ |
10202 | insn = 0xf3af8000; | |
10203 | else | |
10204 | /* nop; nop */ | |
10205 | insn = 0xbf00bf00; | |
b38cadfb | 10206 | |
0855e32b NS |
10207 | bfd_put_16 (input_bfd, insn >> 16, contents + rel->r_offset); |
10208 | bfd_put_16 (input_bfd, insn & 0xffff, contents + rel->r_offset + 2); | |
10209 | break; | |
10210 | } | |
10211 | return bfd_reloc_ok; | |
10212 | } | |
10213 | ||
4962c51a MS |
10214 | /* For a given value of n, calculate the value of G_n as required to |
10215 | deal with group relocations. We return it in the form of an | |
10216 | encoded constant-and-rotation, together with the final residual. If n is | |
10217 | specified as less than zero, then final_residual is filled with the | |
10218 | input value and no further action is performed. */ | |
10219 | ||
10220 | static bfd_vma | |
10221 | calculate_group_reloc_mask (bfd_vma value, int n, bfd_vma *final_residual) | |
10222 | { | |
10223 | int current_n; | |
10224 | bfd_vma g_n; | |
10225 | bfd_vma encoded_g_n = 0; | |
10226 | bfd_vma residual = value; /* Also known as Y_n. */ | |
10227 | ||
10228 | for (current_n = 0; current_n <= n; current_n++) | |
10229 | { | |
10230 | int shift; | |
10231 | ||
10232 | /* Calculate which part of the value to mask. */ | |
10233 | if (residual == 0) | |
99059e56 | 10234 | shift = 0; |
4962c51a | 10235 | else |
99059e56 RM |
10236 | { |
10237 | int msb; | |
10238 | ||
10239 | /* Determine the most significant bit in the residual and | |
10240 | align the resulting value to a 2-bit boundary. */ | |
10241 | for (msb = 30; msb >= 0; msb -= 2) | |
10242 | if (residual & (3 << msb)) | |
10243 | break; | |
10244 | ||
10245 | /* The desired shift is now (msb - 6), or zero, whichever | |
10246 | is the greater. */ | |
10247 | shift = msb - 6; | |
10248 | if (shift < 0) | |
10249 | shift = 0; | |
10250 | } | |
4962c51a MS |
10251 | |
10252 | /* Calculate g_n in 32-bit as well as encoded constant+rotation form. */ | |
10253 | g_n = residual & (0xff << shift); | |
10254 | encoded_g_n = (g_n >> shift) | |
99059e56 | 10255 | | ((g_n <= 0xff ? 0 : (32 - shift) / 2) << 8); |
4962c51a MS |
10256 | |
10257 | /* Calculate the residual for the next time around. */ | |
10258 | residual &= ~g_n; | |
10259 | } | |
10260 | ||
10261 | *final_residual = residual; | |
10262 | ||
10263 | return encoded_g_n; | |
10264 | } | |
10265 | ||
10266 | /* Given an ARM instruction, determine whether it is an ADD or a SUB. | |
10267 | Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */ | |
906e58ca | 10268 | |
4962c51a | 10269 | static int |
906e58ca | 10270 | identify_add_or_sub (bfd_vma insn) |
4962c51a MS |
10271 | { |
10272 | int opcode = insn & 0x1e00000; | |
10273 | ||
10274 | if (opcode == 1 << 23) /* ADD */ | |
10275 | return 1; | |
10276 | ||
10277 | if (opcode == 1 << 22) /* SUB */ | |
10278 | return -1; | |
10279 | ||
10280 | return 0; | |
10281 | } | |
10282 | ||
e5d6e09e AV |
10283 | /* Helper function to compute the Addend for Armv8.1-M Mainline relocations. */ |
10284 | static bfd_vma | |
10285 | get_value_helper (bfd_vma plt_offset, | |
10286 | asection *splt, | |
10287 | asection *input_section, | |
10288 | asection *sym_sec, | |
10289 | struct elf_link_hash_entry * h, | |
10290 | struct bfd_link_info *info, | |
10291 | bfd *input_bfd, | |
10292 | Elf_Internal_Rela *rel, | |
10293 | const char *sym_name, | |
10294 | unsigned char st_type, | |
10295 | struct elf32_arm_link_hash_table *globals, | |
10296 | bfd_boolean *unresolved_reloc_p) | |
10297 | { | |
10298 | bfd_vma value = 0; | |
10299 | enum arm_st_branch_type branch_type; | |
10300 | enum elf32_arm_stub_type stub_type = arm_stub_none; | |
10301 | struct elf32_arm_stub_hash_entry *stub_entry; | |
10302 | struct elf32_arm_link_hash_entry *hash | |
10303 | = (struct elf32_arm_link_hash_entry *)h; | |
10304 | ||
10305 | ||
10306 | if (plt_offset != (bfd_vma) -1) | |
10307 | { | |
10308 | value = (splt->output_section->vma | |
10309 | + splt->output_offset | |
10310 | + plt_offset); | |
10311 | value -= PLT_THUMB_STUB_SIZE; | |
10312 | *unresolved_reloc_p = FALSE; | |
10313 | } | |
10314 | ||
10315 | stub_type = arm_type_of_stub (info, input_section, rel, | |
10316 | st_type, &branch_type, | |
10317 | hash, value, sym_sec, | |
10318 | input_bfd, sym_name); | |
10319 | ||
10320 | if (stub_type != arm_stub_none) | |
10321 | { | |
10322 | stub_entry = elf32_arm_get_stub_entry (input_section, | |
10323 | sym_sec, h, | |
10324 | rel, globals, | |
10325 | stub_type); | |
10326 | if (stub_entry != NULL) | |
10327 | { | |
10328 | value = (stub_entry->stub_offset | |
10329 | + stub_entry->stub_sec->output_offset | |
10330 | + stub_entry->stub_sec->output_section->vma); | |
10331 | } | |
10332 | } | |
10333 | return value; | |
10334 | } | |
10335 | ||
252b5132 | 10336 | /* Perform a relocation as part of a final link. */ |
9b485d32 | 10337 | |
252b5132 | 10338 | static bfd_reloc_status_type |
07d6d2b8 AM |
10339 | elf32_arm_final_link_relocate (reloc_howto_type * howto, |
10340 | bfd * input_bfd, | |
10341 | bfd * output_bfd, | |
10342 | asection * input_section, | |
10343 | bfd_byte * contents, | |
10344 | Elf_Internal_Rela * rel, | |
10345 | bfd_vma value, | |
10346 | struct bfd_link_info * info, | |
10347 | asection * sym_sec, | |
10348 | const char * sym_name, | |
10349 | unsigned char st_type, | |
10350 | enum arm_st_branch_type branch_type, | |
0945cdfd | 10351 | struct elf_link_hash_entry * h, |
07d6d2b8 AM |
10352 | bfd_boolean * unresolved_reloc_p, |
10353 | char ** error_message) | |
10354 | { | |
10355 | unsigned long r_type = howto->type; | |
10356 | unsigned long r_symndx; | |
10357 | bfd_byte * hit_data = contents + rel->r_offset; | |
10358 | bfd_vma * local_got_offsets; | |
10359 | bfd_vma * local_tlsdesc_gotents; | |
10360 | asection * sgot; | |
10361 | asection * splt; | |
10362 | asection * sreloc = NULL; | |
10363 | asection * srelgot; | |
10364 | bfd_vma addend; | |
10365 | bfd_signed_vma signed_addend; | |
10366 | unsigned char dynreloc_st_type; | |
10367 | bfd_vma dynreloc_value; | |
ba96a88f | 10368 | struct elf32_arm_link_hash_table * globals; |
34e77a92 | 10369 | struct elf32_arm_link_hash_entry *eh; |
07d6d2b8 AM |
10370 | union gotplt_union *root_plt; |
10371 | struct arm_plt_info *arm_plt; | |
10372 | bfd_vma plt_offset; | |
10373 | bfd_vma gotplt_offset; | |
10374 | bfd_boolean has_iplt_entry; | |
10375 | bfd_boolean resolved_to_zero; | |
f21f3fe0 | 10376 | |
9c504268 | 10377 | globals = elf32_arm_hash_table (info); |
4dfe6ac6 NC |
10378 | if (globals == NULL) |
10379 | return bfd_reloc_notsupported; | |
9c504268 | 10380 | |
0ffa91dd | 10381 | BFD_ASSERT (is_arm_elf (input_bfd)); |
47aeb64c | 10382 | BFD_ASSERT (howto != NULL); |
0ffa91dd NC |
10383 | |
10384 | /* Some relocation types map to different relocations depending on the | |
9c504268 | 10385 | target. We pick the right one here. */ |
eb043451 | 10386 | r_type = arm_real_reloc_type (globals, r_type); |
0855e32b NS |
10387 | |
10388 | /* It is possible to have linker relaxations on some TLS access | |
10389 | models. Update our information here. */ | |
10390 | r_type = elf32_arm_tls_transition (info, r_type, h); | |
10391 | ||
eb043451 PB |
10392 | if (r_type != howto->type) |
10393 | howto = elf32_arm_howto_from_type (r_type); | |
9c504268 | 10394 | |
34e77a92 | 10395 | eh = (struct elf32_arm_link_hash_entry *) h; |
362d30a1 | 10396 | sgot = globals->root.sgot; |
252b5132 | 10397 | local_got_offsets = elf_local_got_offsets (input_bfd); |
0855e32b NS |
10398 | local_tlsdesc_gotents = elf32_arm_local_tlsdesc_gotent (input_bfd); |
10399 | ||
34e77a92 RS |
10400 | if (globals->root.dynamic_sections_created) |
10401 | srelgot = globals->root.srelgot; | |
10402 | else | |
10403 | srelgot = NULL; | |
10404 | ||
252b5132 RH |
10405 | r_symndx = ELF32_R_SYM (rel->r_info); |
10406 | ||
4e7fd91e | 10407 | if (globals->use_rel) |
ba96a88f | 10408 | { |
4e7fd91e PB |
10409 | addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask; |
10410 | ||
10411 | if (addend & ((howto->src_mask + 1) >> 1)) | |
10412 | { | |
10413 | signed_addend = -1; | |
10414 | signed_addend &= ~ howto->src_mask; | |
10415 | signed_addend |= addend; | |
10416 | } | |
10417 | else | |
10418 | signed_addend = addend; | |
ba96a88f NC |
10419 | } |
10420 | else | |
4e7fd91e | 10421 | addend = signed_addend = rel->r_addend; |
f21f3fe0 | 10422 | |
39f21624 NC |
10423 | /* ST_BRANCH_TO_ARM is nonsense to thumb-only targets when we |
10424 | are resolving a function call relocation. */ | |
10425 | if (using_thumb_only (globals) | |
10426 | && (r_type == R_ARM_THM_CALL | |
10427 | || r_type == R_ARM_THM_JUMP24) | |
10428 | && branch_type == ST_BRANCH_TO_ARM) | |
10429 | branch_type = ST_BRANCH_TO_THUMB; | |
10430 | ||
34e77a92 RS |
10431 | /* Record the symbol information that should be used in dynamic |
10432 | relocations. */ | |
10433 | dynreloc_st_type = st_type; | |
10434 | dynreloc_value = value; | |
10435 | if (branch_type == ST_BRANCH_TO_THUMB) | |
10436 | dynreloc_value |= 1; | |
10437 | ||
10438 | /* Find out whether the symbol has a PLT. Set ST_VALUE, BRANCH_TYPE and | |
10439 | VALUE appropriately for relocations that we resolve at link time. */ | |
10440 | has_iplt_entry = FALSE; | |
4ba2ef8f TP |
10441 | if (elf32_arm_get_plt_info (input_bfd, globals, eh, r_symndx, &root_plt, |
10442 | &arm_plt) | |
34e77a92 RS |
10443 | && root_plt->offset != (bfd_vma) -1) |
10444 | { | |
10445 | plt_offset = root_plt->offset; | |
10446 | gotplt_offset = arm_plt->got_offset; | |
10447 | ||
10448 | if (h == NULL || eh->is_iplt) | |
10449 | { | |
10450 | has_iplt_entry = TRUE; | |
10451 | splt = globals->root.iplt; | |
10452 | ||
10453 | /* Populate .iplt entries here, because not all of them will | |
10454 | be seen by finish_dynamic_symbol. The lower bit is set if | |
10455 | we have already populated the entry. */ | |
10456 | if (plt_offset & 1) | |
10457 | plt_offset--; | |
10458 | else | |
10459 | { | |
57460bcf NC |
10460 | if (elf32_arm_populate_plt_entry (output_bfd, info, root_plt, arm_plt, |
10461 | -1, dynreloc_value)) | |
10462 | root_plt->offset |= 1; | |
10463 | else | |
10464 | return bfd_reloc_notsupported; | |
34e77a92 RS |
10465 | } |
10466 | ||
10467 | /* Static relocations always resolve to the .iplt entry. */ | |
10468 | st_type = STT_FUNC; | |
10469 | value = (splt->output_section->vma | |
10470 | + splt->output_offset | |
10471 | + plt_offset); | |
10472 | branch_type = ST_BRANCH_TO_ARM; | |
10473 | ||
10474 | /* If there are non-call relocations that resolve to the .iplt | |
10475 | entry, then all dynamic ones must too. */ | |
10476 | if (arm_plt->noncall_refcount != 0) | |
10477 | { | |
10478 | dynreloc_st_type = st_type; | |
10479 | dynreloc_value = value; | |
10480 | } | |
10481 | } | |
10482 | else | |
10483 | /* We populate the .plt entry in finish_dynamic_symbol. */ | |
10484 | splt = globals->root.splt; | |
10485 | } | |
10486 | else | |
10487 | { | |
10488 | splt = NULL; | |
10489 | plt_offset = (bfd_vma) -1; | |
10490 | gotplt_offset = (bfd_vma) -1; | |
10491 | } | |
10492 | ||
95b03e4a L |
10493 | resolved_to_zero = (h != NULL |
10494 | && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
10495 | ||
252b5132 RH |
10496 | switch (r_type) |
10497 | { | |
10498 | case R_ARM_NONE: | |
28a094c2 DJ |
10499 | /* We don't need to find a value for this symbol. It's just a |
10500 | marker. */ | |
10501 | *unresolved_reloc_p = FALSE; | |
252b5132 RH |
10502 | return bfd_reloc_ok; |
10503 | ||
00a97672 RS |
10504 | case R_ARM_ABS12: |
10505 | if (!globals->vxworks_p) | |
10506 | return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend); | |
1a0670f3 | 10507 | /* Fall through. */ |
00a97672 | 10508 | |
252b5132 RH |
10509 | case R_ARM_PC24: |
10510 | case R_ARM_ABS32: | |
bb224fc3 | 10511 | case R_ARM_ABS32_NOI: |
252b5132 | 10512 | case R_ARM_REL32: |
bb224fc3 | 10513 | case R_ARM_REL32_NOI: |
5b5bb741 PB |
10514 | case R_ARM_CALL: |
10515 | case R_ARM_JUMP24: | |
dfc5f959 | 10516 | case R_ARM_XPC25: |
eb043451 | 10517 | case R_ARM_PREL31: |
7359ea65 | 10518 | case R_ARM_PLT32: |
7359ea65 DJ |
10519 | /* Handle relocations which should use the PLT entry. ABS32/REL32 |
10520 | will use the symbol's value, which may point to a PLT entry, but we | |
10521 | don't need to handle that here. If we created a PLT entry, all | |
5fa9e92f CL |
10522 | branches in this object should go to it, except if the PLT is too |
10523 | far away, in which case a long branch stub should be inserted. */ | |
bb224fc3 | 10524 | if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32 |
99059e56 | 10525 | && r_type != R_ARM_ABS32_NOI && r_type != R_ARM_REL32_NOI |
155d87d7 CL |
10526 | && r_type != R_ARM_CALL |
10527 | && r_type != R_ARM_JUMP24 | |
10528 | && r_type != R_ARM_PLT32) | |
34e77a92 | 10529 | && plt_offset != (bfd_vma) -1) |
7359ea65 | 10530 | { |
34e77a92 RS |
10531 | /* If we've created a .plt section, and assigned a PLT entry |
10532 | to this function, it must either be a STT_GNU_IFUNC reference | |
10533 | or not be known to bind locally. In other cases, we should | |
10534 | have cleared the PLT entry by now. */ | |
10535 | BFD_ASSERT (has_iplt_entry || !SYMBOL_CALLS_LOCAL (info, h)); | |
7359ea65 DJ |
10536 | |
10537 | value = (splt->output_section->vma | |
10538 | + splt->output_offset | |
34e77a92 | 10539 | + plt_offset); |
0945cdfd | 10540 | *unresolved_reloc_p = FALSE; |
7359ea65 DJ |
10541 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
10542 | contents, rel->r_offset, value, | |
00a97672 | 10543 | rel->r_addend); |
7359ea65 DJ |
10544 | } |
10545 | ||
67687978 PB |
10546 | /* When generating a shared object or relocatable executable, these |
10547 | relocations are copied into the output file to be resolved at | |
10548 | run time. */ | |
0e1862bb | 10549 | if ((bfd_link_pic (info) |
e8b09b87 CL |
10550 | || globals->root.is_relocatable_executable |
10551 | || globals->fdpic_p) | |
7359ea65 | 10552 | && (input_section->flags & SEC_ALLOC) |
4dfe6ac6 | 10553 | && !(globals->vxworks_p |
3348747a NS |
10554 | && strcmp (input_section->output_section->name, |
10555 | ".tls_vars") == 0) | |
bb224fc3 | 10556 | && ((r_type != R_ARM_REL32 && r_type != R_ARM_REL32_NOI) |
ee06dc07 | 10557 | || !SYMBOL_CALLS_LOCAL (info, h)) |
ca6b5f82 AM |
10558 | && !(input_bfd == globals->stub_bfd |
10559 | && strstr (input_section->name, STUB_SUFFIX)) | |
7359ea65 | 10560 | && (h == NULL |
95b03e4a L |
10561 | || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
10562 | && !resolved_to_zero) | |
7359ea65 DJ |
10563 | || h->root.type != bfd_link_hash_undefweak) |
10564 | && r_type != R_ARM_PC24 | |
5b5bb741 PB |
10565 | && r_type != R_ARM_CALL |
10566 | && r_type != R_ARM_JUMP24 | |
ee06dc07 | 10567 | && r_type != R_ARM_PREL31 |
7359ea65 | 10568 | && r_type != R_ARM_PLT32) |
252b5132 | 10569 | { |
947216bf | 10570 | Elf_Internal_Rela outrel; |
b34976b6 | 10571 | bfd_boolean skip, relocate; |
e8b09b87 | 10572 | int isrofixup = 0; |
f21f3fe0 | 10573 | |
52db4ec2 JW |
10574 | if ((r_type == R_ARM_REL32 || r_type == R_ARM_REL32_NOI) |
10575 | && !h->def_regular) | |
10576 | { | |
10577 | char *v = _("shared object"); | |
10578 | ||
0e1862bb | 10579 | if (bfd_link_executable (info)) |
52db4ec2 JW |
10580 | v = _("PIE executable"); |
10581 | ||
4eca0228 | 10582 | _bfd_error_handler |
871b3ab2 | 10583 | (_("%pB: relocation %s against external or undefined symbol `%s'" |
52db4ec2 JW |
10584 | " can not be used when making a %s; recompile with -fPIC"), input_bfd, |
10585 | elf32_arm_howto_table_1[r_type].name, h->root.root.string, v); | |
10586 | return bfd_reloc_notsupported; | |
10587 | } | |
10588 | ||
0945cdfd DJ |
10589 | *unresolved_reloc_p = FALSE; |
10590 | ||
34e77a92 | 10591 | if (sreloc == NULL && globals->root.dynamic_sections_created) |
252b5132 | 10592 | { |
83bac4b0 NC |
10593 | sreloc = _bfd_elf_get_dynamic_reloc_section (input_bfd, input_section, |
10594 | ! globals->use_rel); | |
f21f3fe0 | 10595 | |
83bac4b0 | 10596 | if (sreloc == NULL) |
252b5132 | 10597 | return bfd_reloc_notsupported; |
252b5132 | 10598 | } |
f21f3fe0 | 10599 | |
b34976b6 AM |
10600 | skip = FALSE; |
10601 | relocate = FALSE; | |
f21f3fe0 | 10602 | |
00a97672 | 10603 | outrel.r_addend = addend; |
c629eae0 JJ |
10604 | outrel.r_offset = |
10605 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
10606 | rel->r_offset); | |
10607 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 10608 | skip = TRUE; |
0bb2d96a | 10609 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 10610 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
10611 | outrel.r_offset += (input_section->output_section->vma |
10612 | + input_section->output_offset); | |
f21f3fe0 | 10613 | |
252b5132 | 10614 | if (skip) |
0bb2d96a | 10615 | memset (&outrel, 0, sizeof outrel); |
5e681ec4 PB |
10616 | else if (h != NULL |
10617 | && h->dynindx != -1 | |
0e1862bb | 10618 | && (!bfd_link_pic (info) |
1dcb9720 JW |
10619 | || !(bfd_link_pie (info) |
10620 | || SYMBOLIC_BIND (info, h)) | |
f5385ebf | 10621 | || !h->def_regular)) |
5e681ec4 | 10622 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
252b5132 RH |
10623 | else |
10624 | { | |
a16385dc MM |
10625 | int symbol; |
10626 | ||
5e681ec4 | 10627 | /* This symbol is local, or marked to become local. */ |
e8b09b87 CL |
10628 | BFD_ASSERT (r_type == R_ARM_ABS32 || r_type == R_ARM_ABS32_NOI |
10629 | || (globals->fdpic_p && !bfd_link_pic(info))); | |
a16385dc | 10630 | if (globals->symbian_p) |
6366ff1e | 10631 | { |
74541ad4 AM |
10632 | asection *osec; |
10633 | ||
6366ff1e MM |
10634 | /* On Symbian OS, the data segment and text segement |
10635 | can be relocated independently. Therefore, we | |
10636 | must indicate the segment to which this | |
10637 | relocation is relative. The BPABI allows us to | |
10638 | use any symbol in the right segment; we just use | |
10639 | the section symbol as it is convenient. (We | |
10640 | cannot use the symbol given by "h" directly as it | |
74541ad4 AM |
10641 | will not appear in the dynamic symbol table.) |
10642 | ||
10643 | Note that the dynamic linker ignores the section | |
10644 | symbol value, so we don't subtract osec->vma | |
10645 | from the emitted reloc addend. */ | |
10dbd1f3 | 10646 | if (sym_sec) |
74541ad4 | 10647 | osec = sym_sec->output_section; |
10dbd1f3 | 10648 | else |
74541ad4 AM |
10649 | osec = input_section->output_section; |
10650 | symbol = elf_section_data (osec)->dynindx; | |
10651 | if (symbol == 0) | |
10652 | { | |
10653 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
10654 | ||
10655 | if ((osec->flags & SEC_READONLY) == 0 | |
10656 | && htab->data_index_section != NULL) | |
10657 | osec = htab->data_index_section; | |
10658 | else | |
10659 | osec = htab->text_index_section; | |
10660 | symbol = elf_section_data (osec)->dynindx; | |
10661 | } | |
6366ff1e MM |
10662 | BFD_ASSERT (symbol != 0); |
10663 | } | |
a16385dc MM |
10664 | else |
10665 | /* On SVR4-ish systems, the dynamic loader cannot | |
10666 | relocate the text and data segments independently, | |
10667 | so the symbol does not matter. */ | |
10668 | symbol = 0; | |
34e77a92 RS |
10669 | if (dynreloc_st_type == STT_GNU_IFUNC) |
10670 | /* We have an STT_GNU_IFUNC symbol that doesn't resolve | |
10671 | to the .iplt entry. Instead, every non-call reference | |
10672 | must use an R_ARM_IRELATIVE relocation to obtain the | |
10673 | correct run-time address. */ | |
10674 | outrel.r_info = ELF32_R_INFO (symbol, R_ARM_IRELATIVE); | |
e8b09b87 CL |
10675 | else if (globals->fdpic_p && !bfd_link_pic(info)) |
10676 | isrofixup = 1; | |
34e77a92 RS |
10677 | else |
10678 | outrel.r_info = ELF32_R_INFO (symbol, R_ARM_RELATIVE); | |
00a97672 RS |
10679 | if (globals->use_rel) |
10680 | relocate = TRUE; | |
10681 | else | |
34e77a92 | 10682 | outrel.r_addend += dynreloc_value; |
252b5132 | 10683 | } |
f21f3fe0 | 10684 | |
e8b09b87 CL |
10685 | if (isrofixup) |
10686 | arm_elf_add_rofixup(output_bfd, globals->srofixup, outrel.r_offset); | |
10687 | else | |
10688 | elf32_arm_add_dynreloc (output_bfd, info, sreloc, &outrel); | |
9a5aca8c | 10689 | |
f21f3fe0 | 10690 | /* If this reloc is against an external symbol, we do not want to |
252b5132 | 10691 | fiddle with the addend. Otherwise, we need to include the symbol |
9b485d32 | 10692 | value so that it becomes an addend for the dynamic reloc. */ |
252b5132 RH |
10693 | if (! relocate) |
10694 | return bfd_reloc_ok; | |
9a5aca8c | 10695 | |
f21f3fe0 | 10696 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
34e77a92 RS |
10697 | contents, rel->r_offset, |
10698 | dynreloc_value, (bfd_vma) 0); | |
252b5132 RH |
10699 | } |
10700 | else switch (r_type) | |
10701 | { | |
00a97672 RS |
10702 | case R_ARM_ABS12: |
10703 | return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend); | |
10704 | ||
dfc5f959 | 10705 | case R_ARM_XPC25: /* Arm BLX instruction. */ |
5b5bb741 PB |
10706 | case R_ARM_CALL: |
10707 | case R_ARM_JUMP24: | |
8029a119 | 10708 | case R_ARM_PC24: /* Arm B/BL instruction. */ |
7359ea65 | 10709 | case R_ARM_PLT32: |
906e58ca | 10710 | { |
906e58ca NC |
10711 | struct elf32_arm_stub_hash_entry *stub_entry = NULL; |
10712 | ||
dfc5f959 | 10713 | if (r_type == R_ARM_XPC25) |
252b5132 | 10714 | { |
dfc5f959 NC |
10715 | /* Check for Arm calling Arm function. */ |
10716 | /* FIXME: Should we translate the instruction into a BL | |
10717 | instruction instead ? */ | |
35fc36a8 | 10718 | if (branch_type != ST_BRANCH_TO_THUMB) |
4eca0228 | 10719 | _bfd_error_handler |
90b6238f AM |
10720 | (_("\%pB: warning: %s BLX instruction targets" |
10721 | " %s function '%s'"), | |
10722 | input_bfd, "ARM", | |
10723 | "ARM", h ? h->root.root.string : "(local)"); | |
dfc5f959 | 10724 | } |
155d87d7 | 10725 | else if (r_type == R_ARM_PC24) |
dfc5f959 NC |
10726 | { |
10727 | /* Check for Arm calling Thumb function. */ | |
35fc36a8 | 10728 | if (branch_type == ST_BRANCH_TO_THUMB) |
dfc5f959 | 10729 | { |
f2a9dd69 DJ |
10730 | if (elf32_arm_to_thumb_stub (info, sym_name, input_bfd, |
10731 | output_bfd, input_section, | |
10732 | hit_data, sym_sec, rel->r_offset, | |
10733 | signed_addend, value, | |
10734 | error_message)) | |
10735 | return bfd_reloc_ok; | |
10736 | else | |
10737 | return bfd_reloc_dangerous; | |
dfc5f959 | 10738 | } |
252b5132 | 10739 | } |
ba96a88f | 10740 | |
906e58ca | 10741 | /* Check if a stub has to be inserted because the |
8029a119 | 10742 | destination is too far or we are changing mode. */ |
155d87d7 CL |
10743 | if ( r_type == R_ARM_CALL |
10744 | || r_type == R_ARM_JUMP24 | |
10745 | || r_type == R_ARM_PLT32) | |
906e58ca | 10746 | { |
fe33d2fa CL |
10747 | enum elf32_arm_stub_type stub_type = arm_stub_none; |
10748 | struct elf32_arm_link_hash_entry *hash; | |
10749 | ||
10750 | hash = (struct elf32_arm_link_hash_entry *) h; | |
10751 | stub_type = arm_type_of_stub (info, input_section, rel, | |
34e77a92 RS |
10752 | st_type, &branch_type, |
10753 | hash, value, sym_sec, | |
fe33d2fa | 10754 | input_bfd, sym_name); |
5fa9e92f | 10755 | |
fe33d2fa | 10756 | if (stub_type != arm_stub_none) |
906e58ca NC |
10757 | { |
10758 | /* The target is out of reach, so redirect the | |
10759 | branch to the local stub for this function. */ | |
906e58ca NC |
10760 | stub_entry = elf32_arm_get_stub_entry (input_section, |
10761 | sym_sec, h, | |
fe33d2fa CL |
10762 | rel, globals, |
10763 | stub_type); | |
9cd3e4e5 NC |
10764 | { |
10765 | if (stub_entry != NULL) | |
10766 | value = (stub_entry->stub_offset | |
10767 | + stub_entry->stub_sec->output_offset | |
10768 | + stub_entry->stub_sec->output_section->vma); | |
10769 | ||
10770 | if (plt_offset != (bfd_vma) -1) | |
10771 | *unresolved_reloc_p = FALSE; | |
10772 | } | |
906e58ca | 10773 | } |
fe33d2fa CL |
10774 | else |
10775 | { | |
10776 | /* If the call goes through a PLT entry, make sure to | |
10777 | check distance to the right destination address. */ | |
34e77a92 | 10778 | if (plt_offset != (bfd_vma) -1) |
fe33d2fa CL |
10779 | { |
10780 | value = (splt->output_section->vma | |
10781 | + splt->output_offset | |
34e77a92 | 10782 | + plt_offset); |
fe33d2fa CL |
10783 | *unresolved_reloc_p = FALSE; |
10784 | /* The PLT entry is in ARM mode, regardless of the | |
10785 | target function. */ | |
35fc36a8 | 10786 | branch_type = ST_BRANCH_TO_ARM; |
fe33d2fa CL |
10787 | } |
10788 | } | |
906e58ca NC |
10789 | } |
10790 | ||
dea514f5 PB |
10791 | /* The ARM ELF ABI says that this reloc is computed as: S - P + A |
10792 | where: | |
10793 | S is the address of the symbol in the relocation. | |
10794 | P is address of the instruction being relocated. | |
10795 | A is the addend (extracted from the instruction) in bytes. | |
10796 | ||
10797 | S is held in 'value'. | |
10798 | P is the base address of the section containing the | |
10799 | instruction plus the offset of the reloc into that | |
10800 | section, ie: | |
10801 | (input_section->output_section->vma + | |
10802 | input_section->output_offset + | |
10803 | rel->r_offset). | |
10804 | A is the addend, converted into bytes, ie: | |
10805 | (signed_addend * 4) | |
10806 | ||
10807 | Note: None of these operations have knowledge of the pipeline | |
10808 | size of the processor, thus it is up to the assembler to | |
10809 | encode this information into the addend. */ | |
10810 | value -= (input_section->output_section->vma | |
10811 | + input_section->output_offset); | |
10812 | value -= rel->r_offset; | |
4e7fd91e PB |
10813 | if (globals->use_rel) |
10814 | value += (signed_addend << howto->size); | |
10815 | else | |
10816 | /* RELA addends do not have to be adjusted by howto->size. */ | |
10817 | value += signed_addend; | |
23080146 | 10818 | |
dcb5e6e6 NC |
10819 | signed_addend = value; |
10820 | signed_addend >>= howto->rightshift; | |
9a5aca8c | 10821 | |
5ab79981 | 10822 | /* A branch to an undefined weak symbol is turned into a jump to |
ffcb4889 | 10823 | the next instruction unless a PLT entry will be created. |
77b4f08f | 10824 | Do the same for local undefined symbols (but not for STN_UNDEF). |
cd1dac3d DG |
10825 | The jump to the next instruction is optimized as a NOP depending |
10826 | on the architecture. */ | |
ffcb4889 | 10827 | if (h ? (h->root.type == bfd_link_hash_undefweak |
34e77a92 | 10828 | && plt_offset == (bfd_vma) -1) |
77b4f08f | 10829 | : r_symndx != STN_UNDEF && bfd_is_und_section (sym_sec)) |
5ab79981 | 10830 | { |
cd1dac3d DG |
10831 | value = (bfd_get_32 (input_bfd, hit_data) & 0xf0000000); |
10832 | ||
10833 | if (arch_has_arm_nop (globals)) | |
10834 | value |= 0x0320f000; | |
10835 | else | |
10836 | value |= 0x01a00000; /* Using pre-UAL nop: mov r0, r0. */ | |
5ab79981 PB |
10837 | } |
10838 | else | |
59f2c4e7 | 10839 | { |
9b485d32 | 10840 | /* Perform a signed range check. */ |
dcb5e6e6 | 10841 | if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1)) |
59f2c4e7 NC |
10842 | || signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1))) |
10843 | return bfd_reloc_overflow; | |
9a5aca8c | 10844 | |
5ab79981 | 10845 | addend = (value & 2); |
39b41c9c | 10846 | |
5ab79981 PB |
10847 | value = (signed_addend & howto->dst_mask) |
10848 | | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask)); | |
39b41c9c | 10849 | |
5ab79981 PB |
10850 | if (r_type == R_ARM_CALL) |
10851 | { | |
155d87d7 | 10852 | /* Set the H bit in the BLX instruction. */ |
35fc36a8 | 10853 | if (branch_type == ST_BRANCH_TO_THUMB) |
155d87d7 CL |
10854 | { |
10855 | if (addend) | |
10856 | value |= (1 << 24); | |
10857 | else | |
10858 | value &= ~(bfd_vma)(1 << 24); | |
10859 | } | |
10860 | ||
5ab79981 | 10861 | /* Select the correct instruction (BL or BLX). */ |
906e58ca | 10862 | /* Only if we are not handling a BL to a stub. In this |
8029a119 | 10863 | case, mode switching is performed by the stub. */ |
35fc36a8 | 10864 | if (branch_type == ST_BRANCH_TO_THUMB && !stub_entry) |
5ab79981 | 10865 | value |= (1 << 28); |
63e1a0fc | 10866 | else if (stub_entry || branch_type != ST_BRANCH_UNKNOWN) |
5ab79981 PB |
10867 | { |
10868 | value &= ~(bfd_vma)(1 << 28); | |
10869 | value |= (1 << 24); | |
10870 | } | |
39b41c9c PB |
10871 | } |
10872 | } | |
906e58ca | 10873 | } |
252b5132 | 10874 | break; |
f21f3fe0 | 10875 | |
252b5132 RH |
10876 | case R_ARM_ABS32: |
10877 | value += addend; | |
35fc36a8 | 10878 | if (branch_type == ST_BRANCH_TO_THUMB) |
252b5132 RH |
10879 | value |= 1; |
10880 | break; | |
f21f3fe0 | 10881 | |
bb224fc3 MS |
10882 | case R_ARM_ABS32_NOI: |
10883 | value += addend; | |
10884 | break; | |
10885 | ||
252b5132 | 10886 | case R_ARM_REL32: |
a8bc6c78 | 10887 | value += addend; |
35fc36a8 | 10888 | if (branch_type == ST_BRANCH_TO_THUMB) |
a8bc6c78 | 10889 | value |= 1; |
252b5132 | 10890 | value -= (input_section->output_section->vma |
62efb346 | 10891 | + input_section->output_offset + rel->r_offset); |
252b5132 | 10892 | break; |
eb043451 | 10893 | |
bb224fc3 MS |
10894 | case R_ARM_REL32_NOI: |
10895 | value += addend; | |
10896 | value -= (input_section->output_section->vma | |
10897 | + input_section->output_offset + rel->r_offset); | |
10898 | break; | |
10899 | ||
eb043451 PB |
10900 | case R_ARM_PREL31: |
10901 | value -= (input_section->output_section->vma | |
10902 | + input_section->output_offset + rel->r_offset); | |
10903 | value += signed_addend; | |
10904 | if (! h || h->root.type != bfd_link_hash_undefweak) | |
10905 | { | |
8029a119 | 10906 | /* Check for overflow. */ |
eb043451 PB |
10907 | if ((value ^ (value >> 1)) & (1 << 30)) |
10908 | return bfd_reloc_overflow; | |
10909 | } | |
10910 | value &= 0x7fffffff; | |
10911 | value |= (bfd_get_32 (input_bfd, hit_data) & 0x80000000); | |
35fc36a8 | 10912 | if (branch_type == ST_BRANCH_TO_THUMB) |
eb043451 PB |
10913 | value |= 1; |
10914 | break; | |
252b5132 | 10915 | } |
f21f3fe0 | 10916 | |
252b5132 RH |
10917 | bfd_put_32 (input_bfd, value, hit_data); |
10918 | return bfd_reloc_ok; | |
10919 | ||
10920 | case R_ARM_ABS8: | |
fd0fd00c MJ |
10921 | /* PR 16202: Refectch the addend using the correct size. */ |
10922 | if (globals->use_rel) | |
10923 | addend = bfd_get_8 (input_bfd, hit_data); | |
252b5132 | 10924 | value += addend; |
4e67d4ca DG |
10925 | |
10926 | /* There is no way to tell whether the user intended to use a signed or | |
10927 | unsigned addend. When checking for overflow we accept either, | |
10928 | as specified by the AAELF. */ | |
10929 | if ((long) value > 0xff || (long) value < -0x80) | |
252b5132 RH |
10930 | return bfd_reloc_overflow; |
10931 | ||
10932 | bfd_put_8 (input_bfd, value, hit_data); | |
10933 | return bfd_reloc_ok; | |
10934 | ||
10935 | case R_ARM_ABS16: | |
fd0fd00c MJ |
10936 | /* PR 16202: Refectch the addend using the correct size. */ |
10937 | if (globals->use_rel) | |
10938 | addend = bfd_get_16 (input_bfd, hit_data); | |
252b5132 RH |
10939 | value += addend; |
10940 | ||
4e67d4ca DG |
10941 | /* See comment for R_ARM_ABS8. */ |
10942 | if ((long) value > 0xffff || (long) value < -0x8000) | |
252b5132 RH |
10943 | return bfd_reloc_overflow; |
10944 | ||
10945 | bfd_put_16 (input_bfd, value, hit_data); | |
10946 | return bfd_reloc_ok; | |
10947 | ||
252b5132 | 10948 | case R_ARM_THM_ABS5: |
9b485d32 | 10949 | /* Support ldr and str instructions for the thumb. */ |
4e7fd91e PB |
10950 | if (globals->use_rel) |
10951 | { | |
10952 | /* Need to refetch addend. */ | |
10953 | addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask; | |
10954 | /* ??? Need to determine shift amount from operand size. */ | |
10955 | addend >>= howto->rightshift; | |
10956 | } | |
252b5132 RH |
10957 | value += addend; |
10958 | ||
10959 | /* ??? Isn't value unsigned? */ | |
10960 | if ((long) value > 0x1f || (long) value < -0x10) | |
10961 | return bfd_reloc_overflow; | |
10962 | ||
10963 | /* ??? Value needs to be properly shifted into place first. */ | |
10964 | value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f; | |
10965 | bfd_put_16 (input_bfd, value, hit_data); | |
10966 | return bfd_reloc_ok; | |
10967 | ||
2cab6cc3 MS |
10968 | case R_ARM_THM_ALU_PREL_11_0: |
10969 | /* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */ | |
10970 | { | |
10971 | bfd_vma insn; | |
10972 | bfd_signed_vma relocation; | |
10973 | ||
10974 | insn = (bfd_get_16 (input_bfd, hit_data) << 16) | |
99059e56 | 10975 | | bfd_get_16 (input_bfd, hit_data + 2); |
2cab6cc3 | 10976 | |
99059e56 RM |
10977 | if (globals->use_rel) |
10978 | { | |
10979 | signed_addend = (insn & 0xff) | ((insn & 0x7000) >> 4) | |
10980 | | ((insn & (1 << 26)) >> 15); | |
10981 | if (insn & 0xf00000) | |
10982 | signed_addend = -signed_addend; | |
10983 | } | |
2cab6cc3 MS |
10984 | |
10985 | relocation = value + signed_addend; | |
79f08007 | 10986 | relocation -= Pa (input_section->output_section->vma |
99059e56 RM |
10987 | + input_section->output_offset |
10988 | + rel->r_offset); | |
2cab6cc3 | 10989 | |
8c65b54f CS |
10990 | /* PR 21523: Use an absolute value. The user of this reloc will |
10991 | have already selected an ADD or SUB insn appropriately. */ | |
453f8e1e | 10992 | value = llabs (relocation); |
2cab6cc3 | 10993 | |
99059e56 RM |
10994 | if (value >= 0x1000) |
10995 | return bfd_reloc_overflow; | |
2cab6cc3 | 10996 | |
e645cf40 AG |
10997 | /* Destination is Thumb. Force bit 0 to 1 to reflect this. */ |
10998 | if (branch_type == ST_BRANCH_TO_THUMB) | |
10999 | value |= 1; | |
11000 | ||
2cab6cc3 | 11001 | insn = (insn & 0xfb0f8f00) | (value & 0xff) |
99059e56 RM |
11002 | | ((value & 0x700) << 4) |
11003 | | ((value & 0x800) << 15); | |
11004 | if (relocation < 0) | |
11005 | insn |= 0xa00000; | |
2cab6cc3 MS |
11006 | |
11007 | bfd_put_16 (input_bfd, insn >> 16, hit_data); | |
11008 | bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2); | |
11009 | ||
99059e56 | 11010 | return bfd_reloc_ok; |
2cab6cc3 MS |
11011 | } |
11012 | ||
e1ec24c6 NC |
11013 | case R_ARM_THM_PC8: |
11014 | /* PR 10073: This reloc is not generated by the GNU toolchain, | |
11015 | but it is supported for compatibility with third party libraries | |
11016 | generated by other compilers, specifically the ARM/IAR. */ | |
11017 | { | |
11018 | bfd_vma insn; | |
11019 | bfd_signed_vma relocation; | |
11020 | ||
11021 | insn = bfd_get_16 (input_bfd, hit_data); | |
11022 | ||
99059e56 | 11023 | if (globals->use_rel) |
79f08007 | 11024 | addend = ((((insn & 0x00ff) << 2) + 4) & 0x3ff) -4; |
e1ec24c6 NC |
11025 | |
11026 | relocation = value + addend; | |
79f08007 | 11027 | relocation -= Pa (input_section->output_section->vma |
99059e56 RM |
11028 | + input_section->output_offset |
11029 | + rel->r_offset); | |
e1ec24c6 | 11030 | |
b6518b38 | 11031 | value = relocation; |
e1ec24c6 NC |
11032 | |
11033 | /* We do not check for overflow of this reloc. Although strictly | |
11034 | speaking this is incorrect, it appears to be necessary in order | |
11035 | to work with IAR generated relocs. Since GCC and GAS do not | |
11036 | generate R_ARM_THM_PC8 relocs, the lack of a check should not be | |
11037 | a problem for them. */ | |
11038 | value &= 0x3fc; | |
11039 | ||
11040 | insn = (insn & 0xff00) | (value >> 2); | |
11041 | ||
11042 | bfd_put_16 (input_bfd, insn, hit_data); | |
11043 | ||
99059e56 | 11044 | return bfd_reloc_ok; |
e1ec24c6 NC |
11045 | } |
11046 | ||
2cab6cc3 MS |
11047 | case R_ARM_THM_PC12: |
11048 | /* Corresponds to: ldr.w reg, [pc, #offset]. */ | |
11049 | { | |
11050 | bfd_vma insn; | |
11051 | bfd_signed_vma relocation; | |
11052 | ||
11053 | insn = (bfd_get_16 (input_bfd, hit_data) << 16) | |
99059e56 | 11054 | | bfd_get_16 (input_bfd, hit_data + 2); |
2cab6cc3 | 11055 | |
99059e56 RM |
11056 | if (globals->use_rel) |
11057 | { | |
11058 | signed_addend = insn & 0xfff; | |
11059 | if (!(insn & (1 << 23))) | |
11060 | signed_addend = -signed_addend; | |
11061 | } | |
2cab6cc3 MS |
11062 | |
11063 | relocation = value + signed_addend; | |
79f08007 | 11064 | relocation -= Pa (input_section->output_section->vma |
99059e56 RM |
11065 | + input_section->output_offset |
11066 | + rel->r_offset); | |
2cab6cc3 | 11067 | |
b6518b38 | 11068 | value = relocation; |
2cab6cc3 | 11069 | |
99059e56 RM |
11070 | if (value >= 0x1000) |
11071 | return bfd_reloc_overflow; | |
2cab6cc3 MS |
11072 | |
11073 | insn = (insn & 0xff7ff000) | value; | |
99059e56 RM |
11074 | if (relocation >= 0) |
11075 | insn |= (1 << 23); | |
2cab6cc3 MS |
11076 | |
11077 | bfd_put_16 (input_bfd, insn >> 16, hit_data); | |
11078 | bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2); | |
11079 | ||
99059e56 | 11080 | return bfd_reloc_ok; |
2cab6cc3 MS |
11081 | } |
11082 | ||
dfc5f959 | 11083 | case R_ARM_THM_XPC22: |
c19d1205 | 11084 | case R_ARM_THM_CALL: |
bd97cb95 | 11085 | case R_ARM_THM_JUMP24: |
dfc5f959 | 11086 | /* Thumb BL (branch long instruction). */ |
252b5132 | 11087 | { |
b34976b6 | 11088 | bfd_vma relocation; |
99059e56 | 11089 | bfd_vma reloc_sign; |
b34976b6 AM |
11090 | bfd_boolean overflow = FALSE; |
11091 | bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); | |
11092 | bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); | |
e95de063 MS |
11093 | bfd_signed_vma reloc_signed_max; |
11094 | bfd_signed_vma reloc_signed_min; | |
b34976b6 | 11095 | bfd_vma check; |
252b5132 | 11096 | bfd_signed_vma signed_check; |
e95de063 | 11097 | int bitsize; |
cd1dac3d | 11098 | const int thumb2 = using_thumb2 (globals); |
5e866f5a | 11099 | const int thumb2_bl = using_thumb2_bl (globals); |
252b5132 | 11100 | |
5ab79981 | 11101 | /* A branch to an undefined weak symbol is turned into a jump to |
cd1dac3d DG |
11102 | the next instruction unless a PLT entry will be created. |
11103 | The jump to the next instruction is optimized as a NOP.W for | |
11104 | Thumb-2 enabled architectures. */ | |
19540007 | 11105 | if (h && h->root.type == bfd_link_hash_undefweak |
34e77a92 | 11106 | && plt_offset == (bfd_vma) -1) |
5ab79981 | 11107 | { |
60a019a0 | 11108 | if (thumb2) |
cd1dac3d DG |
11109 | { |
11110 | bfd_put_16 (input_bfd, 0xf3af, hit_data); | |
11111 | bfd_put_16 (input_bfd, 0x8000, hit_data + 2); | |
11112 | } | |
11113 | else | |
11114 | { | |
11115 | bfd_put_16 (input_bfd, 0xe000, hit_data); | |
11116 | bfd_put_16 (input_bfd, 0xbf00, hit_data + 2); | |
11117 | } | |
5ab79981 PB |
11118 | return bfd_reloc_ok; |
11119 | } | |
11120 | ||
e95de063 | 11121 | /* Fetch the addend. We use the Thumb-2 encoding (backwards compatible |
99059e56 | 11122 | with Thumb-1) involving the J1 and J2 bits. */ |
4e7fd91e PB |
11123 | if (globals->use_rel) |
11124 | { | |
99059e56 RM |
11125 | bfd_vma s = (upper_insn & (1 << 10)) >> 10; |
11126 | bfd_vma upper = upper_insn & 0x3ff; | |
11127 | bfd_vma lower = lower_insn & 0x7ff; | |
e95de063 MS |
11128 | bfd_vma j1 = (lower_insn & (1 << 13)) >> 13; |
11129 | bfd_vma j2 = (lower_insn & (1 << 11)) >> 11; | |
99059e56 RM |
11130 | bfd_vma i1 = j1 ^ s ? 0 : 1; |
11131 | bfd_vma i2 = j2 ^ s ? 0 : 1; | |
e95de063 | 11132 | |
99059e56 RM |
11133 | addend = (i1 << 23) | (i2 << 22) | (upper << 12) | (lower << 1); |
11134 | /* Sign extend. */ | |
11135 | addend = (addend | ((s ? 0 : 1) << 24)) - (1 << 24); | |
e95de063 | 11136 | |
4e7fd91e PB |
11137 | signed_addend = addend; |
11138 | } | |
cb1afa5c | 11139 | |
dfc5f959 NC |
11140 | if (r_type == R_ARM_THM_XPC22) |
11141 | { | |
11142 | /* Check for Thumb to Thumb call. */ | |
11143 | /* FIXME: Should we translate the instruction into a BL | |
11144 | instruction instead ? */ | |
35fc36a8 | 11145 | if (branch_type == ST_BRANCH_TO_THUMB) |
4eca0228 | 11146 | _bfd_error_handler |
90b6238f AM |
11147 | (_("%pB: warning: %s BLX instruction targets" |
11148 | " %s function '%s'"), | |
11149 | input_bfd, "Thumb", | |
11150 | "Thumb", h ? h->root.root.string : "(local)"); | |
dfc5f959 NC |
11151 | } |
11152 | else | |
252b5132 | 11153 | { |
dfc5f959 NC |
11154 | /* If it is not a call to Thumb, assume call to Arm. |
11155 | If it is a call relative to a section name, then it is not a | |
b7693d02 DJ |
11156 | function call at all, but rather a long jump. Calls through |
11157 | the PLT do not require stubs. */ | |
34e77a92 | 11158 | if (branch_type == ST_BRANCH_TO_ARM && plt_offset == (bfd_vma) -1) |
dfc5f959 | 11159 | { |
bd97cb95 | 11160 | if (globals->use_blx && r_type == R_ARM_THM_CALL) |
39b41c9c PB |
11161 | { |
11162 | /* Convert BL to BLX. */ | |
11163 | lower_insn = (lower_insn & ~0x1000) | 0x0800; | |
11164 | } | |
155d87d7 CL |
11165 | else if (( r_type != R_ARM_THM_CALL) |
11166 | && (r_type != R_ARM_THM_JUMP24)) | |
8029a119 NC |
11167 | { |
11168 | if (elf32_thumb_to_arm_stub | |
11169 | (info, sym_name, input_bfd, output_bfd, input_section, | |
11170 | hit_data, sym_sec, rel->r_offset, signed_addend, value, | |
11171 | error_message)) | |
11172 | return bfd_reloc_ok; | |
11173 | else | |
11174 | return bfd_reloc_dangerous; | |
11175 | } | |
da5938a2 | 11176 | } |
35fc36a8 RS |
11177 | else if (branch_type == ST_BRANCH_TO_THUMB |
11178 | && globals->use_blx | |
bd97cb95 | 11179 | && r_type == R_ARM_THM_CALL) |
39b41c9c PB |
11180 | { |
11181 | /* Make sure this is a BL. */ | |
11182 | lower_insn |= 0x1800; | |
11183 | } | |
252b5132 | 11184 | } |
f21f3fe0 | 11185 | |
fe33d2fa | 11186 | enum elf32_arm_stub_type stub_type = arm_stub_none; |
155d87d7 | 11187 | if (r_type == R_ARM_THM_CALL || r_type == R_ARM_THM_JUMP24) |
906e58ca NC |
11188 | { |
11189 | /* Check if a stub has to be inserted because the destination | |
8029a119 | 11190 | is too far. */ |
fe33d2fa CL |
11191 | struct elf32_arm_stub_hash_entry *stub_entry; |
11192 | struct elf32_arm_link_hash_entry *hash; | |
11193 | ||
11194 | hash = (struct elf32_arm_link_hash_entry *) h; | |
11195 | ||
11196 | stub_type = arm_type_of_stub (info, input_section, rel, | |
34e77a92 RS |
11197 | st_type, &branch_type, |
11198 | hash, value, sym_sec, | |
fe33d2fa CL |
11199 | input_bfd, sym_name); |
11200 | ||
11201 | if (stub_type != arm_stub_none) | |
906e58ca NC |
11202 | { |
11203 | /* The target is out of reach or we are changing modes, so | |
11204 | redirect the branch to the local stub for this | |
11205 | function. */ | |
11206 | stub_entry = elf32_arm_get_stub_entry (input_section, | |
11207 | sym_sec, h, | |
fe33d2fa CL |
11208 | rel, globals, |
11209 | stub_type); | |
906e58ca | 11210 | if (stub_entry != NULL) |
9cd3e4e5 NC |
11211 | { |
11212 | value = (stub_entry->stub_offset | |
11213 | + stub_entry->stub_sec->output_offset | |
11214 | + stub_entry->stub_sec->output_section->vma); | |
11215 | ||
11216 | if (plt_offset != (bfd_vma) -1) | |
11217 | *unresolved_reloc_p = FALSE; | |
11218 | } | |
906e58ca | 11219 | |
f4ac8484 | 11220 | /* If this call becomes a call to Arm, force BLX. */ |
155d87d7 | 11221 | if (globals->use_blx && (r_type == R_ARM_THM_CALL)) |
f4ac8484 DJ |
11222 | { |
11223 | if ((stub_entry | |
11224 | && !arm_stub_is_thumb (stub_entry->stub_type)) | |
35fc36a8 | 11225 | || branch_type != ST_BRANCH_TO_THUMB) |
f4ac8484 DJ |
11226 | lower_insn = (lower_insn & ~0x1000) | 0x0800; |
11227 | } | |
906e58ca NC |
11228 | } |
11229 | } | |
11230 | ||
fe33d2fa | 11231 | /* Handle calls via the PLT. */ |
34e77a92 | 11232 | if (stub_type == arm_stub_none && plt_offset != (bfd_vma) -1) |
fe33d2fa CL |
11233 | { |
11234 | value = (splt->output_section->vma | |
11235 | + splt->output_offset | |
34e77a92 | 11236 | + plt_offset); |
fe33d2fa | 11237 | |
eed94f8f NC |
11238 | if (globals->use_blx |
11239 | && r_type == R_ARM_THM_CALL | |
11240 | && ! using_thumb_only (globals)) | |
fe33d2fa CL |
11241 | { |
11242 | /* If the Thumb BLX instruction is available, convert | |
11243 | the BL to a BLX instruction to call the ARM-mode | |
11244 | PLT entry. */ | |
11245 | lower_insn = (lower_insn & ~0x1000) | 0x0800; | |
35fc36a8 | 11246 | branch_type = ST_BRANCH_TO_ARM; |
fe33d2fa CL |
11247 | } |
11248 | else | |
11249 | { | |
eed94f8f NC |
11250 | if (! using_thumb_only (globals)) |
11251 | /* Target the Thumb stub before the ARM PLT entry. */ | |
11252 | value -= PLT_THUMB_STUB_SIZE; | |
35fc36a8 | 11253 | branch_type = ST_BRANCH_TO_THUMB; |
fe33d2fa CL |
11254 | } |
11255 | *unresolved_reloc_p = FALSE; | |
11256 | } | |
11257 | ||
ba96a88f | 11258 | relocation = value + signed_addend; |
f21f3fe0 | 11259 | |
252b5132 | 11260 | relocation -= (input_section->output_section->vma |
ba96a88f NC |
11261 | + input_section->output_offset |
11262 | + rel->r_offset); | |
9a5aca8c | 11263 | |
252b5132 RH |
11264 | check = relocation >> howto->rightshift; |
11265 | ||
11266 | /* If this is a signed value, the rightshift just dropped | |
11267 | leading 1 bits (assuming twos complement). */ | |
11268 | if ((bfd_signed_vma) relocation >= 0) | |
11269 | signed_check = check; | |
11270 | else | |
11271 | signed_check = check | ~((bfd_vma) -1 >> howto->rightshift); | |
11272 | ||
e95de063 MS |
11273 | /* Calculate the permissable maximum and minimum values for |
11274 | this relocation according to whether we're relocating for | |
11275 | Thumb-2 or not. */ | |
11276 | bitsize = howto->bitsize; | |
5e866f5a | 11277 | if (!thumb2_bl) |
e95de063 | 11278 | bitsize -= 2; |
f6ebfac0 | 11279 | reloc_signed_max = (1 << (bitsize - 1)) - 1; |
e95de063 MS |
11280 | reloc_signed_min = ~reloc_signed_max; |
11281 | ||
252b5132 | 11282 | /* Assumes two's complement. */ |
ba96a88f | 11283 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) |
b34976b6 | 11284 | overflow = TRUE; |
252b5132 | 11285 | |
bd97cb95 | 11286 | if ((lower_insn & 0x5000) == 0x4000) |
c62e1cc3 NC |
11287 | /* For a BLX instruction, make sure that the relocation is rounded up |
11288 | to a word boundary. This follows the semantics of the instruction | |
11289 | which specifies that bit 1 of the target address will come from bit | |
11290 | 1 of the base address. */ | |
11291 | relocation = (relocation + 2) & ~ 3; | |
cb1afa5c | 11292 | |
e95de063 MS |
11293 | /* Put RELOCATION back into the insn. Assumes two's complement. |
11294 | We use the Thumb-2 encoding, which is safe even if dealing with | |
11295 | a Thumb-1 instruction by virtue of our overflow check above. */ | |
99059e56 | 11296 | reloc_sign = (signed_check < 0) ? 1 : 0; |
e95de063 | 11297 | upper_insn = (upper_insn & ~(bfd_vma) 0x7ff) |
99059e56 RM |
11298 | | ((relocation >> 12) & 0x3ff) |
11299 | | (reloc_sign << 10); | |
906e58ca | 11300 | lower_insn = (lower_insn & ~(bfd_vma) 0x2fff) |
99059e56 RM |
11301 | | (((!((relocation >> 23) & 1)) ^ reloc_sign) << 13) |
11302 | | (((!((relocation >> 22) & 1)) ^ reloc_sign) << 11) | |
11303 | | ((relocation >> 1) & 0x7ff); | |
c62e1cc3 | 11304 | |
252b5132 RH |
11305 | /* Put the relocated value back in the object file: */ |
11306 | bfd_put_16 (input_bfd, upper_insn, hit_data); | |
11307 | bfd_put_16 (input_bfd, lower_insn, hit_data + 2); | |
11308 | ||
11309 | return (overflow ? bfd_reloc_overflow : bfd_reloc_ok); | |
11310 | } | |
11311 | break; | |
11312 | ||
c19d1205 ZW |
11313 | case R_ARM_THM_JUMP19: |
11314 | /* Thumb32 conditional branch instruction. */ | |
11315 | { | |
11316 | bfd_vma relocation; | |
11317 | bfd_boolean overflow = FALSE; | |
11318 | bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); | |
11319 | bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); | |
a00a1f35 MS |
11320 | bfd_signed_vma reloc_signed_max = 0xffffe; |
11321 | bfd_signed_vma reloc_signed_min = -0x100000; | |
c19d1205 | 11322 | bfd_signed_vma signed_check; |
07d6d2b8 | 11323 | enum elf32_arm_stub_type stub_type = arm_stub_none; |
c5423981 TG |
11324 | struct elf32_arm_stub_hash_entry *stub_entry; |
11325 | struct elf32_arm_link_hash_entry *hash; | |
c19d1205 ZW |
11326 | |
11327 | /* Need to refetch the addend, reconstruct the top three bits, | |
11328 | and squish the two 11 bit pieces together. */ | |
11329 | if (globals->use_rel) | |
11330 | { | |
11331 | bfd_vma S = (upper_insn & 0x0400) >> 10; | |
a00a1f35 | 11332 | bfd_vma upper = (upper_insn & 0x003f); |
c19d1205 ZW |
11333 | bfd_vma J1 = (lower_insn & 0x2000) >> 13; |
11334 | bfd_vma J2 = (lower_insn & 0x0800) >> 11; | |
11335 | bfd_vma lower = (lower_insn & 0x07ff); | |
11336 | ||
a00a1f35 MS |
11337 | upper |= J1 << 6; |
11338 | upper |= J2 << 7; | |
11339 | upper |= (!S) << 8; | |
c19d1205 ZW |
11340 | upper -= 0x0100; /* Sign extend. */ |
11341 | ||
11342 | addend = (upper << 12) | (lower << 1); | |
11343 | signed_addend = addend; | |
11344 | } | |
11345 | ||
bd97cb95 | 11346 | /* Handle calls via the PLT. */ |
34e77a92 | 11347 | if (plt_offset != (bfd_vma) -1) |
bd97cb95 DJ |
11348 | { |
11349 | value = (splt->output_section->vma | |
11350 | + splt->output_offset | |
34e77a92 | 11351 | + plt_offset); |
bd97cb95 DJ |
11352 | /* Target the Thumb stub before the ARM PLT entry. */ |
11353 | value -= PLT_THUMB_STUB_SIZE; | |
11354 | *unresolved_reloc_p = FALSE; | |
11355 | } | |
11356 | ||
c5423981 TG |
11357 | hash = (struct elf32_arm_link_hash_entry *)h; |
11358 | ||
11359 | stub_type = arm_type_of_stub (info, input_section, rel, | |
07d6d2b8 AM |
11360 | st_type, &branch_type, |
11361 | hash, value, sym_sec, | |
11362 | input_bfd, sym_name); | |
c5423981 TG |
11363 | if (stub_type != arm_stub_none) |
11364 | { | |
11365 | stub_entry = elf32_arm_get_stub_entry (input_section, | |
07d6d2b8 AM |
11366 | sym_sec, h, |
11367 | rel, globals, | |
11368 | stub_type); | |
c5423981 TG |
11369 | if (stub_entry != NULL) |
11370 | { | |
07d6d2b8 AM |
11371 | value = (stub_entry->stub_offset |
11372 | + stub_entry->stub_sec->output_offset | |
11373 | + stub_entry->stub_sec->output_section->vma); | |
c5423981 TG |
11374 | } |
11375 | } | |
c19d1205 | 11376 | |
99059e56 | 11377 | relocation = value + signed_addend; |
c19d1205 ZW |
11378 | relocation -= (input_section->output_section->vma |
11379 | + input_section->output_offset | |
11380 | + rel->r_offset); | |
a00a1f35 | 11381 | signed_check = (bfd_signed_vma) relocation; |
c19d1205 | 11382 | |
c19d1205 ZW |
11383 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) |
11384 | overflow = TRUE; | |
11385 | ||
11386 | /* Put RELOCATION back into the insn. */ | |
11387 | { | |
11388 | bfd_vma S = (relocation & 0x00100000) >> 20; | |
11389 | bfd_vma J2 = (relocation & 0x00080000) >> 19; | |
11390 | bfd_vma J1 = (relocation & 0x00040000) >> 18; | |
11391 | bfd_vma hi = (relocation & 0x0003f000) >> 12; | |
11392 | bfd_vma lo = (relocation & 0x00000ffe) >> 1; | |
11393 | ||
a00a1f35 | 11394 | upper_insn = (upper_insn & 0xfbc0) | (S << 10) | hi; |
c19d1205 ZW |
11395 | lower_insn = (lower_insn & 0xd000) | (J1 << 13) | (J2 << 11) | lo; |
11396 | } | |
11397 | ||
11398 | /* Put the relocated value back in the object file: */ | |
11399 | bfd_put_16 (input_bfd, upper_insn, hit_data); | |
11400 | bfd_put_16 (input_bfd, lower_insn, hit_data + 2); | |
11401 | ||
11402 | return (overflow ? bfd_reloc_overflow : bfd_reloc_ok); | |
11403 | } | |
11404 | ||
11405 | case R_ARM_THM_JUMP11: | |
11406 | case R_ARM_THM_JUMP8: | |
11407 | case R_ARM_THM_JUMP6: | |
51c5503b NC |
11408 | /* Thumb B (branch) instruction). */ |
11409 | { | |
6cf9e9fe | 11410 | bfd_signed_vma relocation; |
51c5503b NC |
11411 | bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1; |
11412 | bfd_signed_vma reloc_signed_min = ~ reloc_signed_max; | |
51c5503b NC |
11413 | bfd_signed_vma signed_check; |
11414 | ||
c19d1205 ZW |
11415 | /* CZB cannot jump backward. */ |
11416 | if (r_type == R_ARM_THM_JUMP6) | |
11417 | reloc_signed_min = 0; | |
11418 | ||
4e7fd91e | 11419 | if (globals->use_rel) |
6cf9e9fe | 11420 | { |
4e7fd91e PB |
11421 | /* Need to refetch addend. */ |
11422 | addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask; | |
11423 | if (addend & ((howto->src_mask + 1) >> 1)) | |
11424 | { | |
11425 | signed_addend = -1; | |
11426 | signed_addend &= ~ howto->src_mask; | |
11427 | signed_addend |= addend; | |
11428 | } | |
11429 | else | |
11430 | signed_addend = addend; | |
11431 | /* The value in the insn has been right shifted. We need to | |
11432 | undo this, so that we can perform the address calculation | |
11433 | in terms of bytes. */ | |
11434 | signed_addend <<= howto->rightshift; | |
6cf9e9fe | 11435 | } |
6cf9e9fe | 11436 | relocation = value + signed_addend; |
51c5503b NC |
11437 | |
11438 | relocation -= (input_section->output_section->vma | |
11439 | + input_section->output_offset | |
11440 | + rel->r_offset); | |
11441 | ||
6cf9e9fe NC |
11442 | relocation >>= howto->rightshift; |
11443 | signed_check = relocation; | |
c19d1205 ZW |
11444 | |
11445 | if (r_type == R_ARM_THM_JUMP6) | |
11446 | relocation = ((relocation & 0x0020) << 4) | ((relocation & 0x001f) << 3); | |
11447 | else | |
11448 | relocation &= howto->dst_mask; | |
51c5503b | 11449 | relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask)); |
cedb70c5 | 11450 | |
51c5503b NC |
11451 | bfd_put_16 (input_bfd, relocation, hit_data); |
11452 | ||
11453 | /* Assumes two's complement. */ | |
11454 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) | |
11455 | return bfd_reloc_overflow; | |
11456 | ||
11457 | return bfd_reloc_ok; | |
11458 | } | |
cedb70c5 | 11459 | |
8375c36b PB |
11460 | case R_ARM_ALU_PCREL7_0: |
11461 | case R_ARM_ALU_PCREL15_8: | |
11462 | case R_ARM_ALU_PCREL23_15: | |
11463 | { | |
11464 | bfd_vma insn; | |
11465 | bfd_vma relocation; | |
11466 | ||
11467 | insn = bfd_get_32 (input_bfd, hit_data); | |
4e7fd91e PB |
11468 | if (globals->use_rel) |
11469 | { | |
11470 | /* Extract the addend. */ | |
11471 | addend = (insn & 0xff) << ((insn & 0xf00) >> 7); | |
11472 | signed_addend = addend; | |
11473 | } | |
8375c36b PB |
11474 | relocation = value + signed_addend; |
11475 | ||
11476 | relocation -= (input_section->output_section->vma | |
11477 | + input_section->output_offset | |
11478 | + rel->r_offset); | |
11479 | insn = (insn & ~0xfff) | |
11480 | | ((howto->bitpos << 7) & 0xf00) | |
11481 | | ((relocation >> howto->bitpos) & 0xff); | |
11482 | bfd_put_32 (input_bfd, value, hit_data); | |
11483 | } | |
11484 | return bfd_reloc_ok; | |
11485 | ||
252b5132 RH |
11486 | case R_ARM_GNU_VTINHERIT: |
11487 | case R_ARM_GNU_VTENTRY: | |
11488 | return bfd_reloc_ok; | |
11489 | ||
c19d1205 | 11490 | case R_ARM_GOTOFF32: |
252b5132 | 11491 | /* Relocation is relative to the start of the |
99059e56 | 11492 | global offset table. */ |
252b5132 RH |
11493 | |
11494 | BFD_ASSERT (sgot != NULL); | |
11495 | if (sgot == NULL) | |
99059e56 | 11496 | return bfd_reloc_notsupported; |
9a5aca8c | 11497 | |
cedb70c5 | 11498 | /* If we are addressing a Thumb function, we need to adjust the |
ee29b9fb RE |
11499 | address by one, so that attempts to call the function pointer will |
11500 | correctly interpret it as Thumb code. */ | |
35fc36a8 | 11501 | if (branch_type == ST_BRANCH_TO_THUMB) |
ee29b9fb RE |
11502 | value += 1; |
11503 | ||
252b5132 | 11504 | /* Note that sgot->output_offset is not involved in this |
99059e56 RM |
11505 | calculation. We always want the start of .got. If we |
11506 | define _GLOBAL_OFFSET_TABLE in a different way, as is | |
11507 | permitted by the ABI, we might have to change this | |
11508 | calculation. */ | |
252b5132 | 11509 | value -= sgot->output_section->vma; |
f21f3fe0 | 11510 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 | 11511 | contents, rel->r_offset, value, |
00a97672 | 11512 | rel->r_addend); |
252b5132 RH |
11513 | |
11514 | case R_ARM_GOTPC: | |
a7c10850 | 11515 | /* Use global offset table as symbol value. */ |
252b5132 | 11516 | BFD_ASSERT (sgot != NULL); |
f21f3fe0 | 11517 | |
252b5132 | 11518 | if (sgot == NULL) |
99059e56 | 11519 | return bfd_reloc_notsupported; |
252b5132 | 11520 | |
0945cdfd | 11521 | *unresolved_reloc_p = FALSE; |
252b5132 | 11522 | value = sgot->output_section->vma; |
f21f3fe0 | 11523 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 | 11524 | contents, rel->r_offset, value, |
00a97672 | 11525 | rel->r_addend); |
f21f3fe0 | 11526 | |
252b5132 | 11527 | case R_ARM_GOT32: |
eb043451 | 11528 | case R_ARM_GOT_PREL: |
252b5132 | 11529 | /* Relocation is to the entry for this symbol in the |
99059e56 | 11530 | global offset table. */ |
252b5132 RH |
11531 | if (sgot == NULL) |
11532 | return bfd_reloc_notsupported; | |
f21f3fe0 | 11533 | |
34e77a92 RS |
11534 | if (dynreloc_st_type == STT_GNU_IFUNC |
11535 | && plt_offset != (bfd_vma) -1 | |
11536 | && (h == NULL || SYMBOL_REFERENCES_LOCAL (info, h))) | |
11537 | { | |
11538 | /* We have a relocation against a locally-binding STT_GNU_IFUNC | |
11539 | symbol, and the relocation resolves directly to the runtime | |
11540 | target rather than to the .iplt entry. This means that any | |
11541 | .got entry would be the same value as the .igot.plt entry, | |
11542 | so there's no point creating both. */ | |
11543 | sgot = globals->root.igotplt; | |
11544 | value = sgot->output_offset + gotplt_offset; | |
11545 | } | |
11546 | else if (h != NULL) | |
252b5132 RH |
11547 | { |
11548 | bfd_vma off; | |
f21f3fe0 | 11549 | |
252b5132 RH |
11550 | off = h->got.offset; |
11551 | BFD_ASSERT (off != (bfd_vma) -1); | |
b436d854 | 11552 | if ((off & 1) != 0) |
252b5132 | 11553 | { |
b436d854 RS |
11554 | /* We have already processsed one GOT relocation against |
11555 | this symbol. */ | |
11556 | off &= ~1; | |
11557 | if (globals->root.dynamic_sections_created | |
11558 | && !SYMBOL_REFERENCES_LOCAL (info, h)) | |
11559 | *unresolved_reloc_p = FALSE; | |
11560 | } | |
11561 | else | |
11562 | { | |
11563 | Elf_Internal_Rela outrel; | |
e8b09b87 | 11564 | int isrofixup = 0; |
b436d854 | 11565 | |
e8b09b87 CL |
11566 | if (((h->dynindx != -1) || globals->fdpic_p) |
11567 | && !SYMBOL_REFERENCES_LOCAL (info, h)) | |
b436d854 RS |
11568 | { |
11569 | /* If the symbol doesn't resolve locally in a static | |
11570 | object, we have an undefined reference. If the | |
11571 | symbol doesn't resolve locally in a dynamic object, | |
11572 | it should be resolved by the dynamic linker. */ | |
11573 | if (globals->root.dynamic_sections_created) | |
11574 | { | |
11575 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT); | |
11576 | *unresolved_reloc_p = FALSE; | |
11577 | } | |
11578 | else | |
11579 | outrel.r_info = 0; | |
11580 | outrel.r_addend = 0; | |
11581 | } | |
252b5132 RH |
11582 | else |
11583 | { | |
34e77a92 | 11584 | if (dynreloc_st_type == STT_GNU_IFUNC) |
99059e56 | 11585 | outrel.r_info = ELF32_R_INFO (0, R_ARM_IRELATIVE); |
5025eb7c AO |
11586 | else if (bfd_link_pic (info) |
11587 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
11588 | || h->root.type != bfd_link_hash_undefweak)) | |
99059e56 RM |
11589 | outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); |
11590 | else | |
2376f038 EB |
11591 | { |
11592 | outrel.r_info = 0; | |
11593 | if (globals->fdpic_p) | |
11594 | isrofixup = 1; | |
11595 | } | |
34e77a92 | 11596 | outrel.r_addend = dynreloc_value; |
b436d854 | 11597 | } |
ee29b9fb | 11598 | |
b436d854 RS |
11599 | /* The GOT entry is initialized to zero by default. |
11600 | See if we should install a different value. */ | |
11601 | if (outrel.r_addend != 0 | |
2376f038 | 11602 | && (globals->use_rel || outrel.r_info == 0)) |
b436d854 RS |
11603 | { |
11604 | bfd_put_32 (output_bfd, outrel.r_addend, | |
11605 | sgot->contents + off); | |
11606 | outrel.r_addend = 0; | |
252b5132 | 11607 | } |
f21f3fe0 | 11608 | |
2376f038 EB |
11609 | if (isrofixup) |
11610 | arm_elf_add_rofixup (output_bfd, | |
11611 | elf32_arm_hash_table(info)->srofixup, | |
11612 | sgot->output_section->vma | |
11613 | + sgot->output_offset + off); | |
11614 | ||
11615 | else if (outrel.r_info != 0) | |
b436d854 RS |
11616 | { |
11617 | outrel.r_offset = (sgot->output_section->vma | |
11618 | + sgot->output_offset | |
11619 | + off); | |
11620 | elf32_arm_add_dynreloc (output_bfd, info, srelgot, &outrel); | |
11621 | } | |
2376f038 | 11622 | |
b436d854 RS |
11623 | h->got.offset |= 1; |
11624 | } | |
252b5132 RH |
11625 | value = sgot->output_offset + off; |
11626 | } | |
11627 | else | |
11628 | { | |
11629 | bfd_vma off; | |
f21f3fe0 | 11630 | |
5025eb7c AO |
11631 | BFD_ASSERT (local_got_offsets != NULL |
11632 | && local_got_offsets[r_symndx] != (bfd_vma) -1); | |
f21f3fe0 | 11633 | |
252b5132 | 11634 | off = local_got_offsets[r_symndx]; |
f21f3fe0 | 11635 | |
252b5132 RH |
11636 | /* The offset must always be a multiple of 4. We use the |
11637 | least significant bit to record whether we have already | |
9b485d32 | 11638 | generated the necessary reloc. */ |
252b5132 RH |
11639 | if ((off & 1) != 0) |
11640 | off &= ~1; | |
11641 | else | |
11642 | { | |
2376f038 EB |
11643 | Elf_Internal_Rela outrel; |
11644 | int isrofixup = 0; | |
f21f3fe0 | 11645 | |
2376f038 EB |
11646 | if (dynreloc_st_type == STT_GNU_IFUNC) |
11647 | outrel.r_info = ELF32_R_INFO (0, R_ARM_IRELATIVE); | |
11648 | else if (bfd_link_pic (info)) | |
11649 | outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); | |
11650 | else | |
252b5132 | 11651 | { |
2376f038 EB |
11652 | outrel.r_info = 0; |
11653 | if (globals->fdpic_p) | |
11654 | isrofixup = 1; | |
11655 | } | |
11656 | ||
11657 | /* The GOT entry is initialized to zero by default. | |
11658 | See if we should install a different value. */ | |
11659 | if (globals->use_rel || outrel.r_info == 0) | |
11660 | bfd_put_32 (output_bfd, dynreloc_value, sgot->contents + off); | |
11661 | ||
11662 | if (isrofixup) | |
11663 | arm_elf_add_rofixup (output_bfd, | |
11664 | globals->srofixup, | |
11665 | sgot->output_section->vma | |
11666 | + sgot->output_offset + off); | |
f21f3fe0 | 11667 | |
2376f038 EB |
11668 | else if (outrel.r_info != 0) |
11669 | { | |
34e77a92 | 11670 | outrel.r_addend = addend + dynreloc_value; |
252b5132 | 11671 | outrel.r_offset = (sgot->output_section->vma |
f21f3fe0 | 11672 | + sgot->output_offset |
252b5132 | 11673 | + off); |
47beaa6a | 11674 | elf32_arm_add_dynreloc (output_bfd, info, srelgot, &outrel); |
252b5132 | 11675 | } |
f21f3fe0 | 11676 | |
252b5132 RH |
11677 | local_got_offsets[r_symndx] |= 1; |
11678 | } | |
f21f3fe0 | 11679 | |
252b5132 RH |
11680 | value = sgot->output_offset + off; |
11681 | } | |
eb043451 PB |
11682 | if (r_type != R_ARM_GOT32) |
11683 | value += sgot->output_section->vma; | |
9a5aca8c | 11684 | |
f21f3fe0 | 11685 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 | 11686 | contents, rel->r_offset, value, |
00a97672 | 11687 | rel->r_addend); |
f21f3fe0 | 11688 | |
ba93b8ac DJ |
11689 | case R_ARM_TLS_LDO32: |
11690 | value = value - dtpoff_base (info); | |
11691 | ||
11692 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
00a97672 RS |
11693 | contents, rel->r_offset, value, |
11694 | rel->r_addend); | |
ba93b8ac DJ |
11695 | |
11696 | case R_ARM_TLS_LDM32: | |
5c5a4843 | 11697 | case R_ARM_TLS_LDM32_FDPIC: |
ba93b8ac DJ |
11698 | { |
11699 | bfd_vma off; | |
11700 | ||
362d30a1 | 11701 | if (sgot == NULL) |
ba93b8ac DJ |
11702 | abort (); |
11703 | ||
11704 | off = globals->tls_ldm_got.offset; | |
11705 | ||
11706 | if ((off & 1) != 0) | |
11707 | off &= ~1; | |
11708 | else | |
11709 | { | |
11710 | /* If we don't know the module number, create a relocation | |
11711 | for it. */ | |
0e1862bb | 11712 | if (bfd_link_pic (info)) |
ba93b8ac DJ |
11713 | { |
11714 | Elf_Internal_Rela outrel; | |
ba93b8ac | 11715 | |
362d30a1 | 11716 | if (srelgot == NULL) |
ba93b8ac DJ |
11717 | abort (); |
11718 | ||
00a97672 | 11719 | outrel.r_addend = 0; |
362d30a1 RS |
11720 | outrel.r_offset = (sgot->output_section->vma |
11721 | + sgot->output_offset + off); | |
ba93b8ac DJ |
11722 | outrel.r_info = ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32); |
11723 | ||
00a97672 RS |
11724 | if (globals->use_rel) |
11725 | bfd_put_32 (output_bfd, outrel.r_addend, | |
362d30a1 | 11726 | sgot->contents + off); |
ba93b8ac | 11727 | |
47beaa6a | 11728 | elf32_arm_add_dynreloc (output_bfd, info, srelgot, &outrel); |
ba93b8ac DJ |
11729 | } |
11730 | else | |
362d30a1 | 11731 | bfd_put_32 (output_bfd, 1, sgot->contents + off); |
ba93b8ac DJ |
11732 | |
11733 | globals->tls_ldm_got.offset |= 1; | |
11734 | } | |
11735 | ||
5c5a4843 | 11736 | if (r_type == R_ARM_TLS_LDM32_FDPIC) |
e8b09b87 CL |
11737 | { |
11738 | bfd_put_32(output_bfd, | |
11739 | globals->root.sgot->output_offset + off, | |
11740 | contents + rel->r_offset); | |
11741 | ||
11742 | return bfd_reloc_ok; | |
11743 | } | |
11744 | else | |
11745 | { | |
11746 | value = sgot->output_section->vma + sgot->output_offset + off | |
11747 | - (input_section->output_section->vma | |
11748 | + input_section->output_offset + rel->r_offset); | |
ba93b8ac | 11749 | |
e8b09b87 CL |
11750 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
11751 | contents, rel->r_offset, value, | |
11752 | rel->r_addend); | |
11753 | } | |
ba93b8ac DJ |
11754 | } |
11755 | ||
0855e32b NS |
11756 | case R_ARM_TLS_CALL: |
11757 | case R_ARM_THM_TLS_CALL: | |
ba93b8ac | 11758 | case R_ARM_TLS_GD32: |
5c5a4843 | 11759 | case R_ARM_TLS_GD32_FDPIC: |
ba93b8ac | 11760 | case R_ARM_TLS_IE32: |
5c5a4843 | 11761 | case R_ARM_TLS_IE32_FDPIC: |
0855e32b NS |
11762 | case R_ARM_TLS_GOTDESC: |
11763 | case R_ARM_TLS_DESCSEQ: | |
11764 | case R_ARM_THM_TLS_DESCSEQ: | |
ba93b8ac | 11765 | { |
0855e32b NS |
11766 | bfd_vma off, offplt; |
11767 | int indx = 0; | |
ba93b8ac DJ |
11768 | char tls_type; |
11769 | ||
0855e32b | 11770 | BFD_ASSERT (sgot != NULL); |
ba93b8ac | 11771 | |
ba93b8ac DJ |
11772 | if (h != NULL) |
11773 | { | |
11774 | bfd_boolean dyn; | |
11775 | dyn = globals->root.dynamic_sections_created; | |
0e1862bb L |
11776 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
11777 | bfd_link_pic (info), | |
11778 | h) | |
11779 | && (!bfd_link_pic (info) | |
ba93b8ac DJ |
11780 | || !SYMBOL_REFERENCES_LOCAL (info, h))) |
11781 | { | |
11782 | *unresolved_reloc_p = FALSE; | |
11783 | indx = h->dynindx; | |
11784 | } | |
11785 | off = h->got.offset; | |
0855e32b | 11786 | offplt = elf32_arm_hash_entry (h)->tlsdesc_got; |
ba93b8ac DJ |
11787 | tls_type = ((struct elf32_arm_link_hash_entry *) h)->tls_type; |
11788 | } | |
11789 | else | |
11790 | { | |
0855e32b | 11791 | BFD_ASSERT (local_got_offsets != NULL); |
ba93b8ac | 11792 | off = local_got_offsets[r_symndx]; |
0855e32b | 11793 | offplt = local_tlsdesc_gotents[r_symndx]; |
ba93b8ac DJ |
11794 | tls_type = elf32_arm_local_got_tls_type (input_bfd)[r_symndx]; |
11795 | } | |
11796 | ||
0855e32b | 11797 | /* Linker relaxations happens from one of the |
b38cadfb | 11798 | R_ARM_{GOTDESC,CALL,DESCSEQ} relocations to IE or LE. */ |
0855e32b | 11799 | if (ELF32_R_TYPE(rel->r_info) != r_type) |
b38cadfb | 11800 | tls_type = GOT_TLS_IE; |
0855e32b NS |
11801 | |
11802 | BFD_ASSERT (tls_type != GOT_UNKNOWN); | |
ba93b8ac DJ |
11803 | |
11804 | if ((off & 1) != 0) | |
11805 | off &= ~1; | |
11806 | else | |
11807 | { | |
11808 | bfd_boolean need_relocs = FALSE; | |
11809 | Elf_Internal_Rela outrel; | |
ba93b8ac DJ |
11810 | int cur_off = off; |
11811 | ||
11812 | /* The GOT entries have not been initialized yet. Do it | |
11813 | now, and emit any relocations. If both an IE GOT and a | |
11814 | GD GOT are necessary, we emit the GD first. */ | |
11815 | ||
0e1862bb | 11816 | if ((bfd_link_pic (info) || indx != 0) |
ba93b8ac | 11817 | && (h == NULL |
95b03e4a L |
11818 | || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
11819 | && !resolved_to_zero) | |
ba93b8ac DJ |
11820 | || h->root.type != bfd_link_hash_undefweak)) |
11821 | { | |
11822 | need_relocs = TRUE; | |
0855e32b | 11823 | BFD_ASSERT (srelgot != NULL); |
ba93b8ac DJ |
11824 | } |
11825 | ||
0855e32b NS |
11826 | if (tls_type & GOT_TLS_GDESC) |
11827 | { | |
47beaa6a RS |
11828 | bfd_byte *loc; |
11829 | ||
0855e32b NS |
11830 | /* We should have relaxed, unless this is an undefined |
11831 | weak symbol. */ | |
11832 | BFD_ASSERT ((h && (h->root.type == bfd_link_hash_undefweak)) | |
0e1862bb | 11833 | || bfd_link_pic (info)); |
0855e32b | 11834 | BFD_ASSERT (globals->sgotplt_jump_table_size + offplt + 8 |
99059e56 | 11835 | <= globals->root.sgotplt->size); |
0855e32b NS |
11836 | |
11837 | outrel.r_addend = 0; | |
11838 | outrel.r_offset = (globals->root.sgotplt->output_section->vma | |
11839 | + globals->root.sgotplt->output_offset | |
11840 | + offplt | |
11841 | + globals->sgotplt_jump_table_size); | |
b38cadfb | 11842 | |
0855e32b NS |
11843 | outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DESC); |
11844 | sreloc = globals->root.srelplt; | |
11845 | loc = sreloc->contents; | |
11846 | loc += globals->next_tls_desc_index++ * RELOC_SIZE (globals); | |
11847 | BFD_ASSERT (loc + RELOC_SIZE (globals) | |
99059e56 | 11848 | <= sreloc->contents + sreloc->size); |
0855e32b NS |
11849 | |
11850 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
11851 | ||
11852 | /* For globals, the first word in the relocation gets | |
11853 | the relocation index and the top bit set, or zero, | |
11854 | if we're binding now. For locals, it gets the | |
11855 | symbol's offset in the tls section. */ | |
99059e56 | 11856 | bfd_put_32 (output_bfd, |
0855e32b NS |
11857 | !h ? value - elf_hash_table (info)->tls_sec->vma |
11858 | : info->flags & DF_BIND_NOW ? 0 | |
11859 | : 0x80000000 | ELF32_R_SYM (outrel.r_info), | |
b38cadfb NC |
11860 | globals->root.sgotplt->contents + offplt |
11861 | + globals->sgotplt_jump_table_size); | |
11862 | ||
0855e32b | 11863 | /* Second word in the relocation is always zero. */ |
99059e56 | 11864 | bfd_put_32 (output_bfd, 0, |
b38cadfb NC |
11865 | globals->root.sgotplt->contents + offplt |
11866 | + globals->sgotplt_jump_table_size + 4); | |
0855e32b | 11867 | } |
ba93b8ac DJ |
11868 | if (tls_type & GOT_TLS_GD) |
11869 | { | |
11870 | if (need_relocs) | |
11871 | { | |
00a97672 | 11872 | outrel.r_addend = 0; |
362d30a1 RS |
11873 | outrel.r_offset = (sgot->output_section->vma |
11874 | + sgot->output_offset | |
00a97672 | 11875 | + cur_off); |
ba93b8ac | 11876 | outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DTPMOD32); |
ba93b8ac | 11877 | |
00a97672 RS |
11878 | if (globals->use_rel) |
11879 | bfd_put_32 (output_bfd, outrel.r_addend, | |
362d30a1 | 11880 | sgot->contents + cur_off); |
00a97672 | 11881 | |
47beaa6a | 11882 | elf32_arm_add_dynreloc (output_bfd, info, srelgot, &outrel); |
ba93b8ac DJ |
11883 | |
11884 | if (indx == 0) | |
11885 | bfd_put_32 (output_bfd, value - dtpoff_base (info), | |
362d30a1 | 11886 | sgot->contents + cur_off + 4); |
ba93b8ac DJ |
11887 | else |
11888 | { | |
00a97672 | 11889 | outrel.r_addend = 0; |
ba93b8ac DJ |
11890 | outrel.r_info = ELF32_R_INFO (indx, |
11891 | R_ARM_TLS_DTPOFF32); | |
11892 | outrel.r_offset += 4; | |
00a97672 RS |
11893 | |
11894 | if (globals->use_rel) | |
11895 | bfd_put_32 (output_bfd, outrel.r_addend, | |
362d30a1 | 11896 | sgot->contents + cur_off + 4); |
00a97672 | 11897 | |
47beaa6a RS |
11898 | elf32_arm_add_dynreloc (output_bfd, info, |
11899 | srelgot, &outrel); | |
ba93b8ac DJ |
11900 | } |
11901 | } | |
11902 | else | |
11903 | { | |
11904 | /* If we are not emitting relocations for a | |
11905 | general dynamic reference, then we must be in a | |
11906 | static link or an executable link with the | |
11907 | symbol binding locally. Mark it as belonging | |
11908 | to module 1, the executable. */ | |
11909 | bfd_put_32 (output_bfd, 1, | |
362d30a1 | 11910 | sgot->contents + cur_off); |
ba93b8ac | 11911 | bfd_put_32 (output_bfd, value - dtpoff_base (info), |
362d30a1 | 11912 | sgot->contents + cur_off + 4); |
ba93b8ac DJ |
11913 | } |
11914 | ||
11915 | cur_off += 8; | |
11916 | } | |
11917 | ||
11918 | if (tls_type & GOT_TLS_IE) | |
11919 | { | |
11920 | if (need_relocs) | |
11921 | { | |
00a97672 RS |
11922 | if (indx == 0) |
11923 | outrel.r_addend = value - dtpoff_base (info); | |
11924 | else | |
11925 | outrel.r_addend = 0; | |
362d30a1 RS |
11926 | outrel.r_offset = (sgot->output_section->vma |
11927 | + sgot->output_offset | |
ba93b8ac DJ |
11928 | + cur_off); |
11929 | outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_TPOFF32); | |
11930 | ||
00a97672 RS |
11931 | if (globals->use_rel) |
11932 | bfd_put_32 (output_bfd, outrel.r_addend, | |
362d30a1 | 11933 | sgot->contents + cur_off); |
ba93b8ac | 11934 | |
47beaa6a | 11935 | elf32_arm_add_dynreloc (output_bfd, info, srelgot, &outrel); |
ba93b8ac DJ |
11936 | } |
11937 | else | |
11938 | bfd_put_32 (output_bfd, tpoff (info, value), | |
362d30a1 | 11939 | sgot->contents + cur_off); |
ba93b8ac DJ |
11940 | cur_off += 4; |
11941 | } | |
11942 | ||
11943 | if (h != NULL) | |
11944 | h->got.offset |= 1; | |
11945 | else | |
11946 | local_got_offsets[r_symndx] |= 1; | |
11947 | } | |
11948 | ||
5c5a4843 | 11949 | if ((tls_type & GOT_TLS_GD) && r_type != R_ARM_TLS_GD32 && r_type != R_ARM_TLS_GD32_FDPIC) |
ba93b8ac | 11950 | off += 8; |
0855e32b NS |
11951 | else if (tls_type & GOT_TLS_GDESC) |
11952 | off = offplt; | |
11953 | ||
11954 | if (ELF32_R_TYPE(rel->r_info) == R_ARM_TLS_CALL | |
11955 | || ELF32_R_TYPE(rel->r_info) == R_ARM_THM_TLS_CALL) | |
11956 | { | |
11957 | bfd_signed_vma offset; | |
12352d3f PB |
11958 | /* TLS stubs are arm mode. The original symbol is a |
11959 | data object, so branch_type is bogus. */ | |
11960 | branch_type = ST_BRANCH_TO_ARM; | |
0855e32b | 11961 | enum elf32_arm_stub_type stub_type |
34e77a92 RS |
11962 | = arm_type_of_stub (info, input_section, rel, |
11963 | st_type, &branch_type, | |
0855e32b NS |
11964 | (struct elf32_arm_link_hash_entry *)h, |
11965 | globals->tls_trampoline, globals->root.splt, | |
11966 | input_bfd, sym_name); | |
11967 | ||
11968 | if (stub_type != arm_stub_none) | |
11969 | { | |
11970 | struct elf32_arm_stub_hash_entry *stub_entry | |
11971 | = elf32_arm_get_stub_entry | |
11972 | (input_section, globals->root.splt, 0, rel, | |
11973 | globals, stub_type); | |
11974 | offset = (stub_entry->stub_offset | |
11975 | + stub_entry->stub_sec->output_offset | |
11976 | + stub_entry->stub_sec->output_section->vma); | |
11977 | } | |
11978 | else | |
11979 | offset = (globals->root.splt->output_section->vma | |
11980 | + globals->root.splt->output_offset | |
11981 | + globals->tls_trampoline); | |
11982 | ||
11983 | if (ELF32_R_TYPE(rel->r_info) == R_ARM_TLS_CALL) | |
11984 | { | |
11985 | unsigned long inst; | |
b38cadfb NC |
11986 | |
11987 | offset -= (input_section->output_section->vma | |
11988 | + input_section->output_offset | |
11989 | + rel->r_offset + 8); | |
0855e32b NS |
11990 | |
11991 | inst = offset >> 2; | |
11992 | inst &= 0x00ffffff; | |
11993 | value = inst | (globals->use_blx ? 0xfa000000 : 0xeb000000); | |
11994 | } | |
11995 | else | |
11996 | { | |
11997 | /* Thumb blx encodes the offset in a complicated | |
11998 | fashion. */ | |
11999 | unsigned upper_insn, lower_insn; | |
12000 | unsigned neg; | |
12001 | ||
b38cadfb NC |
12002 | offset -= (input_section->output_section->vma |
12003 | + input_section->output_offset | |
0855e32b | 12004 | + rel->r_offset + 4); |
b38cadfb | 12005 | |
12352d3f PB |
12006 | if (stub_type != arm_stub_none |
12007 | && arm_stub_is_thumb (stub_type)) | |
12008 | { | |
12009 | lower_insn = 0xd000; | |
12010 | } | |
12011 | else | |
12012 | { | |
12013 | lower_insn = 0xc000; | |
6a631e86 | 12014 | /* Round up the offset to a word boundary. */ |
12352d3f PB |
12015 | offset = (offset + 2) & ~2; |
12016 | } | |
12017 | ||
0855e32b NS |
12018 | neg = offset < 0; |
12019 | upper_insn = (0xf000 | |
12020 | | ((offset >> 12) & 0x3ff) | |
12021 | | (neg << 10)); | |
12352d3f | 12022 | lower_insn |= (((!((offset >> 23) & 1)) ^ neg) << 13) |
0855e32b | 12023 | | (((!((offset >> 22) & 1)) ^ neg) << 11) |
12352d3f | 12024 | | ((offset >> 1) & 0x7ff); |
0855e32b NS |
12025 | bfd_put_16 (input_bfd, upper_insn, hit_data); |
12026 | bfd_put_16 (input_bfd, lower_insn, hit_data + 2); | |
12027 | return bfd_reloc_ok; | |
12028 | } | |
12029 | } | |
12030 | /* These relocations needs special care, as besides the fact | |
12031 | they point somewhere in .gotplt, the addend must be | |
12032 | adjusted accordingly depending on the type of instruction | |
6a631e86 | 12033 | we refer to. */ |
0855e32b NS |
12034 | else if ((r_type == R_ARM_TLS_GOTDESC) && (tls_type & GOT_TLS_GDESC)) |
12035 | { | |
12036 | unsigned long data, insn; | |
12037 | unsigned thumb; | |
b38cadfb | 12038 | |
0855e32b NS |
12039 | data = bfd_get_32 (input_bfd, hit_data); |
12040 | thumb = data & 1; | |
12041 | data &= ~1u; | |
b38cadfb | 12042 | |
0855e32b NS |
12043 | if (thumb) |
12044 | { | |
12045 | insn = bfd_get_16 (input_bfd, contents + rel->r_offset - data); | |
12046 | if ((insn & 0xf000) == 0xf000 || (insn & 0xf800) == 0xe800) | |
12047 | insn = (insn << 16) | |
12048 | | bfd_get_16 (input_bfd, | |
12049 | contents + rel->r_offset - data + 2); | |
12050 | if ((insn & 0xf800c000) == 0xf000c000) | |
12051 | /* bl/blx */ | |
12052 | value = -6; | |
12053 | else if ((insn & 0xffffff00) == 0x4400) | |
12054 | /* add */ | |
12055 | value = -5; | |
12056 | else | |
12057 | { | |
4eca0228 | 12058 | _bfd_error_handler |
695344c0 | 12059 | /* xgettext:c-format */ |
2dcf00ce | 12060 | (_("%pB(%pA+%#" PRIx64 "): " |
90b6238f | 12061 | "unexpected %s instruction '%#lx' " |
2dcf00ce AM |
12062 | "referenced by TLS_GOTDESC"), |
12063 | input_bfd, input_section, (uint64_t) rel->r_offset, | |
90b6238f | 12064 | "Thumb", insn); |
0855e32b NS |
12065 | return bfd_reloc_notsupported; |
12066 | } | |
12067 | } | |
12068 | else | |
12069 | { | |
12070 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset - data); | |
12071 | ||
12072 | switch (insn >> 24) | |
12073 | { | |
12074 | case 0xeb: /* bl */ | |
12075 | case 0xfa: /* blx */ | |
12076 | value = -4; | |
12077 | break; | |
12078 | ||
12079 | case 0xe0: /* add */ | |
12080 | value = -8; | |
12081 | break; | |
b38cadfb | 12082 | |
0855e32b | 12083 | default: |
4eca0228 | 12084 | _bfd_error_handler |
695344c0 | 12085 | /* xgettext:c-format */ |
2dcf00ce | 12086 | (_("%pB(%pA+%#" PRIx64 "): " |
90b6238f | 12087 | "unexpected %s instruction '%#lx' " |
2dcf00ce AM |
12088 | "referenced by TLS_GOTDESC"), |
12089 | input_bfd, input_section, (uint64_t) rel->r_offset, | |
90b6238f | 12090 | "ARM", insn); |
0855e32b NS |
12091 | return bfd_reloc_notsupported; |
12092 | } | |
12093 | } | |
b38cadfb | 12094 | |
0855e32b NS |
12095 | value += ((globals->root.sgotplt->output_section->vma |
12096 | + globals->root.sgotplt->output_offset + off) | |
12097 | - (input_section->output_section->vma | |
12098 | + input_section->output_offset | |
12099 | + rel->r_offset) | |
12100 | + globals->sgotplt_jump_table_size); | |
12101 | } | |
12102 | else | |
12103 | value = ((globals->root.sgot->output_section->vma | |
12104 | + globals->root.sgot->output_offset + off) | |
12105 | - (input_section->output_section->vma | |
12106 | + input_section->output_offset + rel->r_offset)); | |
ba93b8ac | 12107 | |
5c5a4843 CL |
12108 | if (globals->fdpic_p && (r_type == R_ARM_TLS_GD32_FDPIC || |
12109 | r_type == R_ARM_TLS_IE32_FDPIC)) | |
e8b09b87 CL |
12110 | { |
12111 | /* For FDPIC relocations, resolve to the offset of the GOT | |
12112 | entry from the start of GOT. */ | |
12113 | bfd_put_32(output_bfd, | |
12114 | globals->root.sgot->output_offset + off, | |
12115 | contents + rel->r_offset); | |
12116 | ||
12117 | return bfd_reloc_ok; | |
12118 | } | |
12119 | else | |
12120 | { | |
12121 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
12122 | contents, rel->r_offset, value, | |
12123 | rel->r_addend); | |
12124 | } | |
ba93b8ac DJ |
12125 | } |
12126 | ||
12127 | case R_ARM_TLS_LE32: | |
3cbc1e5e | 12128 | if (bfd_link_dll (info)) |
ba93b8ac | 12129 | { |
4eca0228 | 12130 | _bfd_error_handler |
695344c0 | 12131 | /* xgettext:c-format */ |
2dcf00ce AM |
12132 | (_("%pB(%pA+%#" PRIx64 "): %s relocation not permitted " |
12133 | "in shared object"), | |
12134 | input_bfd, input_section, (uint64_t) rel->r_offset, howto->name); | |
46691134 | 12135 | return bfd_reloc_notsupported; |
ba93b8ac DJ |
12136 | } |
12137 | else | |
12138 | value = tpoff (info, value); | |
906e58ca | 12139 | |
ba93b8ac | 12140 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
00a97672 RS |
12141 | contents, rel->r_offset, value, |
12142 | rel->r_addend); | |
ba93b8ac | 12143 | |
319850b4 JB |
12144 | case R_ARM_V4BX: |
12145 | if (globals->fix_v4bx) | |
845b51d6 PB |
12146 | { |
12147 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
319850b4 | 12148 | |
845b51d6 PB |
12149 | /* Ensure that we have a BX instruction. */ |
12150 | BFD_ASSERT ((insn & 0x0ffffff0) == 0x012fff10); | |
319850b4 | 12151 | |
845b51d6 PB |
12152 | if (globals->fix_v4bx == 2 && (insn & 0xf) != 0xf) |
12153 | { | |
12154 | /* Branch to veneer. */ | |
12155 | bfd_vma glue_addr; | |
12156 | glue_addr = elf32_arm_bx_glue (info, insn & 0xf); | |
12157 | glue_addr -= input_section->output_section->vma | |
12158 | + input_section->output_offset | |
12159 | + rel->r_offset + 8; | |
12160 | insn = (insn & 0xf0000000) | 0x0a000000 | |
12161 | | ((glue_addr >> 2) & 0x00ffffff); | |
12162 | } | |
12163 | else | |
12164 | { | |
12165 | /* Preserve Rm (lowest four bits) and the condition code | |
12166 | (highest four bits). Other bits encode MOV PC,Rm. */ | |
12167 | insn = (insn & 0xf000000f) | 0x01a0f000; | |
12168 | } | |
319850b4 | 12169 | |
845b51d6 PB |
12170 | bfd_put_32 (input_bfd, insn, hit_data); |
12171 | } | |
319850b4 JB |
12172 | return bfd_reloc_ok; |
12173 | ||
b6895b4f PB |
12174 | case R_ARM_MOVW_ABS_NC: |
12175 | case R_ARM_MOVT_ABS: | |
12176 | case R_ARM_MOVW_PREL_NC: | |
12177 | case R_ARM_MOVT_PREL: | |
92f5d02b MS |
12178 | /* Until we properly support segment-base-relative addressing then |
12179 | we assume the segment base to be zero, as for the group relocations. | |
12180 | Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC | |
12181 | and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS. */ | |
12182 | case R_ARM_MOVW_BREL_NC: | |
12183 | case R_ARM_MOVW_BREL: | |
12184 | case R_ARM_MOVT_BREL: | |
b6895b4f PB |
12185 | { |
12186 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
12187 | ||
12188 | if (globals->use_rel) | |
12189 | { | |
12190 | addend = ((insn >> 4) & 0xf000) | (insn & 0xfff); | |
39623e12 | 12191 | signed_addend = (addend ^ 0x8000) - 0x8000; |
b6895b4f | 12192 | } |
92f5d02b | 12193 | |
b6895b4f | 12194 | value += signed_addend; |
b6895b4f PB |
12195 | |
12196 | if (r_type == R_ARM_MOVW_PREL_NC || r_type == R_ARM_MOVT_PREL) | |
12197 | value -= (input_section->output_section->vma | |
12198 | + input_section->output_offset + rel->r_offset); | |
12199 | ||
92f5d02b | 12200 | if (r_type == R_ARM_MOVW_BREL && value >= 0x10000) |
99059e56 | 12201 | return bfd_reloc_overflow; |
92f5d02b | 12202 | |
35fc36a8 | 12203 | if (branch_type == ST_BRANCH_TO_THUMB) |
92f5d02b MS |
12204 | value |= 1; |
12205 | ||
12206 | if (r_type == R_ARM_MOVT_ABS || r_type == R_ARM_MOVT_PREL | |
99059e56 | 12207 | || r_type == R_ARM_MOVT_BREL) |
b6895b4f PB |
12208 | value >>= 16; |
12209 | ||
12210 | insn &= 0xfff0f000; | |
12211 | insn |= value & 0xfff; | |
12212 | insn |= (value & 0xf000) << 4; | |
12213 | bfd_put_32 (input_bfd, insn, hit_data); | |
12214 | } | |
12215 | return bfd_reloc_ok; | |
12216 | ||
12217 | case R_ARM_THM_MOVW_ABS_NC: | |
12218 | case R_ARM_THM_MOVT_ABS: | |
12219 | case R_ARM_THM_MOVW_PREL_NC: | |
12220 | case R_ARM_THM_MOVT_PREL: | |
92f5d02b MS |
12221 | /* Until we properly support segment-base-relative addressing then |
12222 | we assume the segment base to be zero, as for the above relocations. | |
12223 | Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as | |
12224 | R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics | |
12225 | as R_ARM_THM_MOVT_ABS. */ | |
12226 | case R_ARM_THM_MOVW_BREL_NC: | |
12227 | case R_ARM_THM_MOVW_BREL: | |
12228 | case R_ARM_THM_MOVT_BREL: | |
b6895b4f PB |
12229 | { |
12230 | bfd_vma insn; | |
906e58ca | 12231 | |
b6895b4f PB |
12232 | insn = bfd_get_16 (input_bfd, hit_data) << 16; |
12233 | insn |= bfd_get_16 (input_bfd, hit_data + 2); | |
12234 | ||
12235 | if (globals->use_rel) | |
12236 | { | |
12237 | addend = ((insn >> 4) & 0xf000) | |
12238 | | ((insn >> 15) & 0x0800) | |
12239 | | ((insn >> 4) & 0x0700) | |
07d6d2b8 | 12240 | | (insn & 0x00ff); |
39623e12 | 12241 | signed_addend = (addend ^ 0x8000) - 0x8000; |
b6895b4f | 12242 | } |
92f5d02b | 12243 | |
b6895b4f | 12244 | value += signed_addend; |
b6895b4f PB |
12245 | |
12246 | if (r_type == R_ARM_THM_MOVW_PREL_NC || r_type == R_ARM_THM_MOVT_PREL) | |
12247 | value -= (input_section->output_section->vma | |
12248 | + input_section->output_offset + rel->r_offset); | |
12249 | ||
92f5d02b | 12250 | if (r_type == R_ARM_THM_MOVW_BREL && value >= 0x10000) |
99059e56 | 12251 | return bfd_reloc_overflow; |
92f5d02b | 12252 | |
35fc36a8 | 12253 | if (branch_type == ST_BRANCH_TO_THUMB) |
92f5d02b MS |
12254 | value |= 1; |
12255 | ||
12256 | if (r_type == R_ARM_THM_MOVT_ABS || r_type == R_ARM_THM_MOVT_PREL | |
99059e56 | 12257 | || r_type == R_ARM_THM_MOVT_BREL) |
b6895b4f PB |
12258 | value >>= 16; |
12259 | ||
12260 | insn &= 0xfbf08f00; | |
12261 | insn |= (value & 0xf000) << 4; | |
12262 | insn |= (value & 0x0800) << 15; | |
12263 | insn |= (value & 0x0700) << 4; | |
12264 | insn |= (value & 0x00ff); | |
12265 | ||
12266 | bfd_put_16 (input_bfd, insn >> 16, hit_data); | |
12267 | bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2); | |
12268 | } | |
12269 | return bfd_reloc_ok; | |
12270 | ||
4962c51a MS |
12271 | case R_ARM_ALU_PC_G0_NC: |
12272 | case R_ARM_ALU_PC_G1_NC: | |
12273 | case R_ARM_ALU_PC_G0: | |
12274 | case R_ARM_ALU_PC_G1: | |
12275 | case R_ARM_ALU_PC_G2: | |
12276 | case R_ARM_ALU_SB_G0_NC: | |
12277 | case R_ARM_ALU_SB_G1_NC: | |
12278 | case R_ARM_ALU_SB_G0: | |
12279 | case R_ARM_ALU_SB_G1: | |
12280 | case R_ARM_ALU_SB_G2: | |
12281 | { | |
12282 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
99059e56 | 12283 | bfd_vma pc = input_section->output_section->vma |
4962c51a | 12284 | + input_section->output_offset + rel->r_offset; |
31a91d61 | 12285 | /* sb is the origin of the *segment* containing the symbol. */ |
62c34db3 | 12286 | bfd_vma sb = sym_sec ? sym_sec->output_section->vma : 0; |
99059e56 RM |
12287 | bfd_vma residual; |
12288 | bfd_vma g_n; | |
4962c51a | 12289 | bfd_signed_vma signed_value; |
99059e56 RM |
12290 | int group = 0; |
12291 | ||
12292 | /* Determine which group of bits to select. */ | |
12293 | switch (r_type) | |
12294 | { | |
12295 | case R_ARM_ALU_PC_G0_NC: | |
12296 | case R_ARM_ALU_PC_G0: | |
12297 | case R_ARM_ALU_SB_G0_NC: | |
12298 | case R_ARM_ALU_SB_G0: | |
12299 | group = 0; | |
12300 | break; | |
12301 | ||
12302 | case R_ARM_ALU_PC_G1_NC: | |
12303 | case R_ARM_ALU_PC_G1: | |
12304 | case R_ARM_ALU_SB_G1_NC: | |
12305 | case R_ARM_ALU_SB_G1: | |
12306 | group = 1; | |
12307 | break; | |
12308 | ||
12309 | case R_ARM_ALU_PC_G2: | |
12310 | case R_ARM_ALU_SB_G2: | |
12311 | group = 2; | |
12312 | break; | |
12313 | ||
12314 | default: | |
12315 | abort (); | |
12316 | } | |
12317 | ||
12318 | /* If REL, extract the addend from the insn. If RELA, it will | |
12319 | have already been fetched for us. */ | |
4962c51a | 12320 | if (globals->use_rel) |
99059e56 RM |
12321 | { |
12322 | int negative; | |
12323 | bfd_vma constant = insn & 0xff; | |
12324 | bfd_vma rotation = (insn & 0xf00) >> 8; | |
12325 | ||
12326 | if (rotation == 0) | |
12327 | signed_addend = constant; | |
12328 | else | |
12329 | { | |
12330 | /* Compensate for the fact that in the instruction, the | |
12331 | rotation is stored in multiples of 2 bits. */ | |
12332 | rotation *= 2; | |
12333 | ||
12334 | /* Rotate "constant" right by "rotation" bits. */ | |
12335 | signed_addend = (constant >> rotation) | | |
12336 | (constant << (8 * sizeof (bfd_vma) - rotation)); | |
12337 | } | |
12338 | ||
12339 | /* Determine if the instruction is an ADD or a SUB. | |
12340 | (For REL, this determines the sign of the addend.) */ | |
12341 | negative = identify_add_or_sub (insn); | |
12342 | if (negative == 0) | |
12343 | { | |
4eca0228 | 12344 | _bfd_error_handler |
695344c0 | 12345 | /* xgettext:c-format */ |
90b6238f | 12346 | (_("%pB(%pA+%#" PRIx64 "): only ADD or SUB instructions " |
2dcf00ce AM |
12347 | "are allowed for ALU group relocations"), |
12348 | input_bfd, input_section, (uint64_t) rel->r_offset); | |
99059e56 RM |
12349 | return bfd_reloc_overflow; |
12350 | } | |
12351 | ||
12352 | signed_addend *= negative; | |
12353 | } | |
4962c51a MS |
12354 | |
12355 | /* Compute the value (X) to go in the place. */ | |
99059e56 RM |
12356 | if (r_type == R_ARM_ALU_PC_G0_NC |
12357 | || r_type == R_ARM_ALU_PC_G1_NC | |
12358 | || r_type == R_ARM_ALU_PC_G0 | |
12359 | || r_type == R_ARM_ALU_PC_G1 | |
12360 | || r_type == R_ARM_ALU_PC_G2) | |
12361 | /* PC relative. */ | |
12362 | signed_value = value - pc + signed_addend; | |
12363 | else | |
12364 | /* Section base relative. */ | |
12365 | signed_value = value - sb + signed_addend; | |
12366 | ||
12367 | /* If the target symbol is a Thumb function, then set the | |
12368 | Thumb bit in the address. */ | |
35fc36a8 | 12369 | if (branch_type == ST_BRANCH_TO_THUMB) |
4962c51a MS |
12370 | signed_value |= 1; |
12371 | ||
99059e56 RM |
12372 | /* Calculate the value of the relevant G_n, in encoded |
12373 | constant-with-rotation format. */ | |
b6518b38 NC |
12374 | g_n = calculate_group_reloc_mask (signed_value < 0 ? - signed_value : signed_value, |
12375 | group, &residual); | |
99059e56 RM |
12376 | |
12377 | /* Check for overflow if required. */ | |
12378 | if ((r_type == R_ARM_ALU_PC_G0 | |
12379 | || r_type == R_ARM_ALU_PC_G1 | |
12380 | || r_type == R_ARM_ALU_PC_G2 | |
12381 | || r_type == R_ARM_ALU_SB_G0 | |
12382 | || r_type == R_ARM_ALU_SB_G1 | |
12383 | || r_type == R_ARM_ALU_SB_G2) && residual != 0) | |
12384 | { | |
4eca0228 | 12385 | _bfd_error_handler |
695344c0 | 12386 | /* xgettext:c-format */ |
90b6238f | 12387 | (_("%pB(%pA+%#" PRIx64 "): overflow whilst " |
2dcf00ce AM |
12388 | "splitting %#" PRIx64 " for group relocation %s"), |
12389 | input_bfd, input_section, (uint64_t) rel->r_offset, | |
12390 | (uint64_t) (signed_value < 0 ? -signed_value : signed_value), | |
12391 | howto->name); | |
99059e56 RM |
12392 | return bfd_reloc_overflow; |
12393 | } | |
12394 | ||
12395 | /* Mask out the value and the ADD/SUB part of the opcode; take care | |
12396 | not to destroy the S bit. */ | |
12397 | insn &= 0xff1ff000; | |
12398 | ||
12399 | /* Set the opcode according to whether the value to go in the | |
12400 | place is negative. */ | |
12401 | if (signed_value < 0) | |
12402 | insn |= 1 << 22; | |
12403 | else | |
12404 | insn |= 1 << 23; | |
12405 | ||
12406 | /* Encode the offset. */ | |
12407 | insn |= g_n; | |
4962c51a MS |
12408 | |
12409 | bfd_put_32 (input_bfd, insn, hit_data); | |
12410 | } | |
12411 | return bfd_reloc_ok; | |
12412 | ||
12413 | case R_ARM_LDR_PC_G0: | |
12414 | case R_ARM_LDR_PC_G1: | |
12415 | case R_ARM_LDR_PC_G2: | |
12416 | case R_ARM_LDR_SB_G0: | |
12417 | case R_ARM_LDR_SB_G1: | |
12418 | case R_ARM_LDR_SB_G2: | |
12419 | { | |
12420 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
99059e56 | 12421 | bfd_vma pc = input_section->output_section->vma |
4962c51a | 12422 | + input_section->output_offset + rel->r_offset; |
31a91d61 | 12423 | /* sb is the origin of the *segment* containing the symbol. */ |
62c34db3 | 12424 | bfd_vma sb = sym_sec ? sym_sec->output_section->vma : 0; |
99059e56 | 12425 | bfd_vma residual; |
4962c51a | 12426 | bfd_signed_vma signed_value; |
99059e56 RM |
12427 | int group = 0; |
12428 | ||
12429 | /* Determine which groups of bits to calculate. */ | |
12430 | switch (r_type) | |
12431 | { | |
12432 | case R_ARM_LDR_PC_G0: | |
12433 | case R_ARM_LDR_SB_G0: | |
12434 | group = 0; | |
12435 | break; | |
12436 | ||
12437 | case R_ARM_LDR_PC_G1: | |
12438 | case R_ARM_LDR_SB_G1: | |
12439 | group = 1; | |
12440 | break; | |
12441 | ||
12442 | case R_ARM_LDR_PC_G2: | |
12443 | case R_ARM_LDR_SB_G2: | |
12444 | group = 2; | |
12445 | break; | |
12446 | ||
12447 | default: | |
12448 | abort (); | |
12449 | } | |
12450 | ||
12451 | /* If REL, extract the addend from the insn. If RELA, it will | |
12452 | have already been fetched for us. */ | |
4962c51a | 12453 | if (globals->use_rel) |
99059e56 RM |
12454 | { |
12455 | int negative = (insn & (1 << 23)) ? 1 : -1; | |
12456 | signed_addend = negative * (insn & 0xfff); | |
12457 | } | |
4962c51a MS |
12458 | |
12459 | /* Compute the value (X) to go in the place. */ | |
99059e56 RM |
12460 | if (r_type == R_ARM_LDR_PC_G0 |
12461 | || r_type == R_ARM_LDR_PC_G1 | |
12462 | || r_type == R_ARM_LDR_PC_G2) | |
12463 | /* PC relative. */ | |
12464 | signed_value = value - pc + signed_addend; | |
12465 | else | |
12466 | /* Section base relative. */ | |
12467 | signed_value = value - sb + signed_addend; | |
12468 | ||
12469 | /* Calculate the value of the relevant G_{n-1} to obtain | |
12470 | the residual at that stage. */ | |
b6518b38 NC |
12471 | calculate_group_reloc_mask (signed_value < 0 ? - signed_value : signed_value, |
12472 | group - 1, &residual); | |
99059e56 RM |
12473 | |
12474 | /* Check for overflow. */ | |
12475 | if (residual >= 0x1000) | |
12476 | { | |
4eca0228 | 12477 | _bfd_error_handler |
695344c0 | 12478 | /* xgettext:c-format */ |
90b6238f | 12479 | (_("%pB(%pA+%#" PRIx64 "): overflow whilst " |
2dcf00ce AM |
12480 | "splitting %#" PRIx64 " for group relocation %s"), |
12481 | input_bfd, input_section, (uint64_t) rel->r_offset, | |
12482 | (uint64_t) (signed_value < 0 ? -signed_value : signed_value), | |
12483 | howto->name); | |
99059e56 RM |
12484 | return bfd_reloc_overflow; |
12485 | } | |
12486 | ||
12487 | /* Mask out the value and U bit. */ | |
12488 | insn &= 0xff7ff000; | |
12489 | ||
12490 | /* Set the U bit if the value to go in the place is non-negative. */ | |
12491 | if (signed_value >= 0) | |
12492 | insn |= 1 << 23; | |
12493 | ||
12494 | /* Encode the offset. */ | |
12495 | insn |= residual; | |
4962c51a MS |
12496 | |
12497 | bfd_put_32 (input_bfd, insn, hit_data); | |
12498 | } | |
12499 | return bfd_reloc_ok; | |
12500 | ||
12501 | case R_ARM_LDRS_PC_G0: | |
12502 | case R_ARM_LDRS_PC_G1: | |
12503 | case R_ARM_LDRS_PC_G2: | |
12504 | case R_ARM_LDRS_SB_G0: | |
12505 | case R_ARM_LDRS_SB_G1: | |
12506 | case R_ARM_LDRS_SB_G2: | |
12507 | { | |
12508 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
99059e56 | 12509 | bfd_vma pc = input_section->output_section->vma |
4962c51a | 12510 | + input_section->output_offset + rel->r_offset; |
31a91d61 | 12511 | /* sb is the origin of the *segment* containing the symbol. */ |
62c34db3 | 12512 | bfd_vma sb = sym_sec ? sym_sec->output_section->vma : 0; |
99059e56 | 12513 | bfd_vma residual; |
4962c51a | 12514 | bfd_signed_vma signed_value; |
99059e56 RM |
12515 | int group = 0; |
12516 | ||
12517 | /* Determine which groups of bits to calculate. */ | |
12518 | switch (r_type) | |
12519 | { | |
12520 | case R_ARM_LDRS_PC_G0: | |
12521 | case R_ARM_LDRS_SB_G0: | |
12522 | group = 0; | |
12523 | break; | |
12524 | ||
12525 | case R_ARM_LDRS_PC_G1: | |
12526 | case R_ARM_LDRS_SB_G1: | |
12527 | group = 1; | |
12528 | break; | |
12529 | ||
12530 | case R_ARM_LDRS_PC_G2: | |
12531 | case R_ARM_LDRS_SB_G2: | |
12532 | group = 2; | |
12533 | break; | |
12534 | ||
12535 | default: | |
12536 | abort (); | |
12537 | } | |
12538 | ||
12539 | /* If REL, extract the addend from the insn. If RELA, it will | |
12540 | have already been fetched for us. */ | |
4962c51a | 12541 | if (globals->use_rel) |
99059e56 RM |
12542 | { |
12543 | int negative = (insn & (1 << 23)) ? 1 : -1; | |
12544 | signed_addend = negative * (((insn & 0xf00) >> 4) + (insn & 0xf)); | |
12545 | } | |
4962c51a MS |
12546 | |
12547 | /* Compute the value (X) to go in the place. */ | |
99059e56 RM |
12548 | if (r_type == R_ARM_LDRS_PC_G0 |
12549 | || r_type == R_ARM_LDRS_PC_G1 | |
12550 | || r_type == R_ARM_LDRS_PC_G2) | |
12551 | /* PC relative. */ | |
12552 | signed_value = value - pc + signed_addend; | |
12553 | else | |
12554 | /* Section base relative. */ | |
12555 | signed_value = value - sb + signed_addend; | |
12556 | ||
12557 | /* Calculate the value of the relevant G_{n-1} to obtain | |
12558 | the residual at that stage. */ | |
b6518b38 NC |
12559 | calculate_group_reloc_mask (signed_value < 0 ? - signed_value : signed_value, |
12560 | group - 1, &residual); | |
99059e56 RM |
12561 | |
12562 | /* Check for overflow. */ | |
12563 | if (residual >= 0x100) | |
12564 | { | |
4eca0228 | 12565 | _bfd_error_handler |
695344c0 | 12566 | /* xgettext:c-format */ |
90b6238f | 12567 | (_("%pB(%pA+%#" PRIx64 "): overflow whilst " |
2dcf00ce AM |
12568 | "splitting %#" PRIx64 " for group relocation %s"), |
12569 | input_bfd, input_section, (uint64_t) rel->r_offset, | |
12570 | (uint64_t) (signed_value < 0 ? -signed_value : signed_value), | |
12571 | howto->name); | |
99059e56 RM |
12572 | return bfd_reloc_overflow; |
12573 | } | |
12574 | ||
12575 | /* Mask out the value and U bit. */ | |
12576 | insn &= 0xff7ff0f0; | |
12577 | ||
12578 | /* Set the U bit if the value to go in the place is non-negative. */ | |
12579 | if (signed_value >= 0) | |
12580 | insn |= 1 << 23; | |
12581 | ||
12582 | /* Encode the offset. */ | |
12583 | insn |= ((residual & 0xf0) << 4) | (residual & 0xf); | |
4962c51a MS |
12584 | |
12585 | bfd_put_32 (input_bfd, insn, hit_data); | |
12586 | } | |
12587 | return bfd_reloc_ok; | |
12588 | ||
12589 | case R_ARM_LDC_PC_G0: | |
12590 | case R_ARM_LDC_PC_G1: | |
12591 | case R_ARM_LDC_PC_G2: | |
12592 | case R_ARM_LDC_SB_G0: | |
12593 | case R_ARM_LDC_SB_G1: | |
12594 | case R_ARM_LDC_SB_G2: | |
12595 | { | |
12596 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
99059e56 | 12597 | bfd_vma pc = input_section->output_section->vma |
4962c51a | 12598 | + input_section->output_offset + rel->r_offset; |
31a91d61 | 12599 | /* sb is the origin of the *segment* containing the symbol. */ |
62c34db3 | 12600 | bfd_vma sb = sym_sec ? sym_sec->output_section->vma : 0; |
99059e56 | 12601 | bfd_vma residual; |
4962c51a | 12602 | bfd_signed_vma signed_value; |
99059e56 RM |
12603 | int group = 0; |
12604 | ||
12605 | /* Determine which groups of bits to calculate. */ | |
12606 | switch (r_type) | |
12607 | { | |
12608 | case R_ARM_LDC_PC_G0: | |
12609 | case R_ARM_LDC_SB_G0: | |
12610 | group = 0; | |
12611 | break; | |
12612 | ||
12613 | case R_ARM_LDC_PC_G1: | |
12614 | case R_ARM_LDC_SB_G1: | |
12615 | group = 1; | |
12616 | break; | |
12617 | ||
12618 | case R_ARM_LDC_PC_G2: | |
12619 | case R_ARM_LDC_SB_G2: | |
12620 | group = 2; | |
12621 | break; | |
12622 | ||
12623 | default: | |
12624 | abort (); | |
12625 | } | |
12626 | ||
12627 | /* If REL, extract the addend from the insn. If RELA, it will | |
12628 | have already been fetched for us. */ | |
4962c51a | 12629 | if (globals->use_rel) |
99059e56 RM |
12630 | { |
12631 | int negative = (insn & (1 << 23)) ? 1 : -1; | |
12632 | signed_addend = negative * ((insn & 0xff) << 2); | |
12633 | } | |
4962c51a MS |
12634 | |
12635 | /* Compute the value (X) to go in the place. */ | |
99059e56 RM |
12636 | if (r_type == R_ARM_LDC_PC_G0 |
12637 | || r_type == R_ARM_LDC_PC_G1 | |
12638 | || r_type == R_ARM_LDC_PC_G2) | |
12639 | /* PC relative. */ | |
12640 | signed_value = value - pc + signed_addend; | |
12641 | else | |
12642 | /* Section base relative. */ | |
12643 | signed_value = value - sb + signed_addend; | |
12644 | ||
12645 | /* Calculate the value of the relevant G_{n-1} to obtain | |
12646 | the residual at that stage. */ | |
b6518b38 NC |
12647 | calculate_group_reloc_mask (signed_value < 0 ? - signed_value : signed_value, |
12648 | group - 1, &residual); | |
99059e56 RM |
12649 | |
12650 | /* Check for overflow. (The absolute value to go in the place must be | |
12651 | divisible by four and, after having been divided by four, must | |
12652 | fit in eight bits.) */ | |
12653 | if ((residual & 0x3) != 0 || residual >= 0x400) | |
12654 | { | |
4eca0228 | 12655 | _bfd_error_handler |
695344c0 | 12656 | /* xgettext:c-format */ |
90b6238f | 12657 | (_("%pB(%pA+%#" PRIx64 "): overflow whilst " |
2dcf00ce AM |
12658 | "splitting %#" PRIx64 " for group relocation %s"), |
12659 | input_bfd, input_section, (uint64_t) rel->r_offset, | |
12660 | (uint64_t) (signed_value < 0 ? -signed_value : signed_value), | |
12661 | howto->name); | |
99059e56 RM |
12662 | return bfd_reloc_overflow; |
12663 | } | |
12664 | ||
12665 | /* Mask out the value and U bit. */ | |
12666 | insn &= 0xff7fff00; | |
12667 | ||
12668 | /* Set the U bit if the value to go in the place is non-negative. */ | |
12669 | if (signed_value >= 0) | |
12670 | insn |= 1 << 23; | |
12671 | ||
12672 | /* Encode the offset. */ | |
12673 | insn |= residual >> 2; | |
4962c51a MS |
12674 | |
12675 | bfd_put_32 (input_bfd, insn, hit_data); | |
12676 | } | |
12677 | return bfd_reloc_ok; | |
12678 | ||
72d98d16 MG |
12679 | case R_ARM_THM_ALU_ABS_G0_NC: |
12680 | case R_ARM_THM_ALU_ABS_G1_NC: | |
12681 | case R_ARM_THM_ALU_ABS_G2_NC: | |
12682 | case R_ARM_THM_ALU_ABS_G3_NC: | |
12683 | { | |
12684 | const int shift_array[4] = {0, 8, 16, 24}; | |
12685 | bfd_vma insn = bfd_get_16 (input_bfd, hit_data); | |
12686 | bfd_vma addr = value; | |
12687 | int shift = shift_array[r_type - R_ARM_THM_ALU_ABS_G0_NC]; | |
12688 | ||
12689 | /* Compute address. */ | |
12690 | if (globals->use_rel) | |
12691 | signed_addend = insn & 0xff; | |
12692 | addr += signed_addend; | |
12693 | if (branch_type == ST_BRANCH_TO_THUMB) | |
12694 | addr |= 1; | |
12695 | /* Clean imm8 insn. */ | |
12696 | insn &= 0xff00; | |
12697 | /* And update with correct part of address. */ | |
12698 | insn |= (addr >> shift) & 0xff; | |
12699 | /* Update insn. */ | |
12700 | bfd_put_16 (input_bfd, insn, hit_data); | |
12701 | } | |
12702 | ||
12703 | *unresolved_reloc_p = FALSE; | |
12704 | return bfd_reloc_ok; | |
12705 | ||
e8b09b87 CL |
12706 | case R_ARM_GOTOFFFUNCDESC: |
12707 | { | |
4b24dd1a | 12708 | if (h == NULL) |
e8b09b87 CL |
12709 | { |
12710 | struct fdpic_local *local_fdpic_cnts = elf32_arm_local_fdpic_cnts(input_bfd); | |
12711 | int dynindx = elf_section_data (sym_sec->output_section)->dynindx; | |
12712 | int offset = local_fdpic_cnts[r_symndx].funcdesc_offset & ~1; | |
12713 | bfd_vma addr = dynreloc_value - sym_sec->output_section->vma; | |
12714 | bfd_vma seg = -1; | |
12715 | ||
12716 | if (bfd_link_pic(info) && dynindx == 0) | |
12717 | abort(); | |
12718 | ||
12719 | /* Resolve relocation. */ | |
12720 | bfd_put_32(output_bfd, (offset + sgot->output_offset) | |
12721 | , contents + rel->r_offset); | |
12722 | /* Emit R_ARM_FUNCDESC_VALUE or two fixups on funcdesc if | |
12723 | not done yet. */ | |
12724 | arm_elf_fill_funcdesc(output_bfd, info, | |
12725 | &local_fdpic_cnts[r_symndx].funcdesc_offset, | |
12726 | dynindx, offset, addr, dynreloc_value, seg); | |
12727 | } | |
12728 | else | |
12729 | { | |
12730 | int dynindx; | |
12731 | int offset = eh->fdpic_cnts.funcdesc_offset & ~1; | |
12732 | bfd_vma addr; | |
12733 | bfd_vma seg = -1; | |
12734 | ||
12735 | /* For static binaries, sym_sec can be null. */ | |
12736 | if (sym_sec) | |
12737 | { | |
12738 | dynindx = elf_section_data (sym_sec->output_section)->dynindx; | |
12739 | addr = dynreloc_value - sym_sec->output_section->vma; | |
12740 | } | |
12741 | else | |
12742 | { | |
12743 | dynindx = 0; | |
12744 | addr = 0; | |
12745 | } | |
12746 | ||
12747 | if (bfd_link_pic(info) && dynindx == 0) | |
12748 | abort(); | |
12749 | ||
12750 | /* This case cannot occur since funcdesc is allocated by | |
12751 | the dynamic loader so we cannot resolve the relocation. */ | |
12752 | if (h->dynindx != -1) | |
12753 | abort(); | |
12754 | ||
12755 | /* Resolve relocation. */ | |
12756 | bfd_put_32(output_bfd, (offset + sgot->output_offset), | |
12757 | contents + rel->r_offset); | |
12758 | /* Emit R_ARM_FUNCDESC_VALUE on funcdesc if not done yet. */ | |
12759 | arm_elf_fill_funcdesc(output_bfd, info, | |
12760 | &eh->fdpic_cnts.funcdesc_offset, | |
12761 | dynindx, offset, addr, dynreloc_value, seg); | |
12762 | } | |
12763 | } | |
12764 | *unresolved_reloc_p = FALSE; | |
12765 | return bfd_reloc_ok; | |
12766 | ||
12767 | case R_ARM_GOTFUNCDESC: | |
12768 | { | |
4b24dd1a | 12769 | if (h != NULL) |
e8b09b87 CL |
12770 | { |
12771 | Elf_Internal_Rela outrel; | |
12772 | ||
12773 | /* Resolve relocation. */ | |
12774 | bfd_put_32(output_bfd, ((eh->fdpic_cnts.gotfuncdesc_offset & ~1) | |
12775 | + sgot->output_offset), | |
12776 | contents + rel->r_offset); | |
12777 | /* Add funcdesc and associated R_ARM_FUNCDESC_VALUE. */ | |
12778 | if(h->dynindx == -1) | |
12779 | { | |
12780 | int dynindx; | |
12781 | int offset = eh->fdpic_cnts.funcdesc_offset & ~1; | |
12782 | bfd_vma addr; | |
12783 | bfd_vma seg = -1; | |
12784 | ||
12785 | /* For static binaries sym_sec can be null. */ | |
12786 | if (sym_sec) | |
12787 | { | |
12788 | dynindx = elf_section_data (sym_sec->output_section)->dynindx; | |
12789 | addr = dynreloc_value - sym_sec->output_section->vma; | |
12790 | } | |
12791 | else | |
12792 | { | |
12793 | dynindx = 0; | |
12794 | addr = 0; | |
12795 | } | |
12796 | ||
12797 | /* Emit R_ARM_FUNCDESC_VALUE on funcdesc if not done yet. */ | |
12798 | arm_elf_fill_funcdesc(output_bfd, info, | |
12799 | &eh->fdpic_cnts.funcdesc_offset, | |
12800 | dynindx, offset, addr, dynreloc_value, seg); | |
12801 | } | |
12802 | ||
12803 | /* Add a dynamic relocation on GOT entry if not already done. */ | |
12804 | if ((eh->fdpic_cnts.gotfuncdesc_offset & 1) == 0) | |
12805 | { | |
12806 | if (h->dynindx == -1) | |
12807 | { | |
12808 | outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); | |
12809 | if (h->root.type == bfd_link_hash_undefweak) | |
12810 | bfd_put_32(output_bfd, 0, sgot->contents | |
12811 | + (eh->fdpic_cnts.gotfuncdesc_offset & ~1)); | |
12812 | else | |
12813 | bfd_put_32(output_bfd, sgot->output_section->vma | |
12814 | + sgot->output_offset | |
12815 | + (eh->fdpic_cnts.funcdesc_offset & ~1), | |
12816 | sgot->contents | |
12817 | + (eh->fdpic_cnts.gotfuncdesc_offset & ~1)); | |
12818 | } | |
12819 | else | |
12820 | { | |
12821 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_FUNCDESC); | |
12822 | } | |
12823 | outrel.r_offset = sgot->output_section->vma | |
12824 | + sgot->output_offset | |
12825 | + (eh->fdpic_cnts.gotfuncdesc_offset & ~1); | |
12826 | outrel.r_addend = 0; | |
12827 | if (h->dynindx == -1 && !bfd_link_pic(info)) | |
12828 | if (h->root.type == bfd_link_hash_undefweak) | |
4b24dd1a | 12829 | arm_elf_add_rofixup(output_bfd, globals->srofixup, -1); |
e8b09b87 | 12830 | else |
4b24dd1a AM |
12831 | arm_elf_add_rofixup(output_bfd, globals->srofixup, |
12832 | outrel.r_offset); | |
e8b09b87 CL |
12833 | else |
12834 | elf32_arm_add_dynreloc (output_bfd, info, srelgot, &outrel); | |
12835 | eh->fdpic_cnts.gotfuncdesc_offset |= 1; | |
12836 | } | |
12837 | } | |
12838 | else | |
12839 | { | |
12840 | /* Such relocation on static function should not have been | |
12841 | emitted by the compiler. */ | |
12842 | abort(); | |
12843 | } | |
12844 | } | |
12845 | *unresolved_reloc_p = FALSE; | |
12846 | return bfd_reloc_ok; | |
12847 | ||
12848 | case R_ARM_FUNCDESC: | |
12849 | { | |
4b24dd1a | 12850 | if (h == NULL) |
e8b09b87 CL |
12851 | { |
12852 | struct fdpic_local *local_fdpic_cnts = elf32_arm_local_fdpic_cnts(input_bfd); | |
12853 | Elf_Internal_Rela outrel; | |
12854 | int dynindx = elf_section_data (sym_sec->output_section)->dynindx; | |
12855 | int offset = local_fdpic_cnts[r_symndx].funcdesc_offset & ~1; | |
12856 | bfd_vma addr = dynreloc_value - sym_sec->output_section->vma; | |
12857 | bfd_vma seg = -1; | |
12858 | ||
12859 | if (bfd_link_pic(info) && dynindx == 0) | |
12860 | abort(); | |
12861 | ||
12862 | /* Replace static FUNCDESC relocation with a | |
12863 | R_ARM_RELATIVE dynamic relocation or with a rofixup for | |
12864 | executable. */ | |
12865 | outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); | |
12866 | outrel.r_offset = input_section->output_section->vma | |
12867 | + input_section->output_offset + rel->r_offset; | |
12868 | outrel.r_addend = 0; | |
12869 | if (bfd_link_pic(info)) | |
12870 | elf32_arm_add_dynreloc (output_bfd, info, srelgot, &outrel); | |
12871 | else | |
12872 | arm_elf_add_rofixup(output_bfd, globals->srofixup, outrel.r_offset); | |
12873 | ||
12874 | bfd_put_32 (input_bfd, sgot->output_section->vma | |
12875 | + sgot->output_offset + offset, hit_data); | |
12876 | ||
12877 | /* Emit R_ARM_FUNCDESC_VALUE on funcdesc if not done yet. */ | |
12878 | arm_elf_fill_funcdesc(output_bfd, info, | |
12879 | &local_fdpic_cnts[r_symndx].funcdesc_offset, | |
12880 | dynindx, offset, addr, dynreloc_value, seg); | |
12881 | } | |
12882 | else | |
12883 | { | |
12884 | if (h->dynindx == -1) | |
12885 | { | |
12886 | int dynindx; | |
12887 | int offset = eh->fdpic_cnts.funcdesc_offset & ~1; | |
12888 | bfd_vma addr; | |
12889 | bfd_vma seg = -1; | |
12890 | Elf_Internal_Rela outrel; | |
12891 | ||
12892 | /* For static binaries sym_sec can be null. */ | |
12893 | if (sym_sec) | |
12894 | { | |
12895 | dynindx = elf_section_data (sym_sec->output_section)->dynindx; | |
12896 | addr = dynreloc_value - sym_sec->output_section->vma; | |
12897 | } | |
12898 | else | |
12899 | { | |
12900 | dynindx = 0; | |
12901 | addr = 0; | |
12902 | } | |
12903 | ||
12904 | if (bfd_link_pic(info) && dynindx == 0) | |
12905 | abort(); | |
12906 | ||
12907 | /* Replace static FUNCDESC relocation with a | |
12908 | R_ARM_RELATIVE dynamic relocation. */ | |
12909 | outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); | |
12910 | outrel.r_offset = input_section->output_section->vma | |
12911 | + input_section->output_offset + rel->r_offset; | |
12912 | outrel.r_addend = 0; | |
12913 | if (bfd_link_pic(info)) | |
12914 | elf32_arm_add_dynreloc (output_bfd, info, srelgot, &outrel); | |
12915 | else | |
12916 | arm_elf_add_rofixup(output_bfd, globals->srofixup, outrel.r_offset); | |
12917 | ||
12918 | bfd_put_32 (input_bfd, sgot->output_section->vma | |
12919 | + sgot->output_offset + offset, hit_data); | |
12920 | ||
12921 | /* Emit R_ARM_FUNCDESC_VALUE on funcdesc if not done yet. */ | |
12922 | arm_elf_fill_funcdesc(output_bfd, info, | |
12923 | &eh->fdpic_cnts.funcdesc_offset, | |
12924 | dynindx, offset, addr, dynreloc_value, seg); | |
12925 | } | |
12926 | else | |
12927 | { | |
12928 | Elf_Internal_Rela outrel; | |
12929 | ||
12930 | /* Add a dynamic relocation. */ | |
12931 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_FUNCDESC); | |
12932 | outrel.r_offset = input_section->output_section->vma | |
12933 | + input_section->output_offset + rel->r_offset; | |
12934 | outrel.r_addend = 0; | |
12935 | elf32_arm_add_dynreloc (output_bfd, info, srelgot, &outrel); | |
12936 | } | |
12937 | } | |
12938 | } | |
12939 | *unresolved_reloc_p = FALSE; | |
12940 | return bfd_reloc_ok; | |
12941 | ||
e5d6e09e AV |
12942 | case R_ARM_THM_BF16: |
12943 | { | |
12944 | bfd_vma relocation; | |
12945 | bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); | |
12946 | bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); | |
12947 | ||
12948 | if (globals->use_rel) | |
12949 | { | |
12950 | bfd_vma immA = (upper_insn & 0x001f); | |
12951 | bfd_vma immB = (lower_insn & 0x07fe) >> 1; | |
12952 | bfd_vma immC = (lower_insn & 0x0800) >> 11; | |
12953 | addend = (immA << 12); | |
12954 | addend |= (immB << 2); | |
12955 | addend |= (immC << 1); | |
12956 | addend |= 1; | |
12957 | /* Sign extend. */ | |
12958 | addend = (addend & 0x10000) ? addend - (1 << 17) : addend; | |
12959 | } | |
12960 | ||
12961 | value = get_value_helper (plt_offset, splt, input_section, sym_sec, h, | |
12962 | info, input_bfd, rel, sym_name, st_type, | |
12963 | globals, unresolved_reloc_p); | |
12964 | ||
12965 | relocation = value + addend; | |
12966 | relocation -= (input_section->output_section->vma | |
12967 | + input_section->output_offset | |
12968 | + rel->r_offset); | |
12969 | ||
12970 | /* Put RELOCATION back into the insn. */ | |
12971 | { | |
12972 | bfd_vma immA = (relocation & 0x0001f000) >> 12; | |
12973 | bfd_vma immB = (relocation & 0x00000ffc) >> 2; | |
12974 | bfd_vma immC = (relocation & 0x00000002) >> 1; | |
12975 | ||
12976 | upper_insn = (upper_insn & 0xffe0) | immA; | |
12977 | lower_insn = (lower_insn & 0xf001) | (immC << 11) | (immB << 1); | |
12978 | } | |
12979 | ||
12980 | /* Put the relocated value back in the object file: */ | |
12981 | bfd_put_16 (input_bfd, upper_insn, hit_data); | |
12982 | bfd_put_16 (input_bfd, lower_insn, hit_data + 2); | |
12983 | ||
12984 | return bfd_reloc_ok; | |
12985 | } | |
12986 | ||
1caf72a5 AV |
12987 | case R_ARM_THM_BF18: |
12988 | { | |
12989 | bfd_vma relocation; | |
12990 | bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); | |
12991 | bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); | |
12992 | ||
12993 | if (globals->use_rel) | |
12994 | { | |
12995 | bfd_vma immA = (upper_insn & 0x007f); | |
12996 | bfd_vma immB = (lower_insn & 0x07fe) >> 1; | |
12997 | bfd_vma immC = (lower_insn & 0x0800) >> 11; | |
12998 | addend = (immA << 12); | |
12999 | addend |= (immB << 2); | |
13000 | addend |= (immC << 1); | |
13001 | addend |= 1; | |
13002 | /* Sign extend. */ | |
13003 | addend = (addend & 0x40000) ? addend - (1 << 19) : addend; | |
13004 | } | |
13005 | ||
13006 | value = get_value_helper (plt_offset, splt, input_section, sym_sec, h, | |
13007 | info, input_bfd, rel, sym_name, st_type, | |
13008 | globals, unresolved_reloc_p); | |
13009 | ||
13010 | relocation = value + addend; | |
13011 | relocation -= (input_section->output_section->vma | |
13012 | + input_section->output_offset | |
13013 | + rel->r_offset); | |
13014 | ||
13015 | /* Put RELOCATION back into the insn. */ | |
13016 | { | |
13017 | bfd_vma immA = (relocation & 0x0007f000) >> 12; | |
13018 | bfd_vma immB = (relocation & 0x00000ffc) >> 2; | |
13019 | bfd_vma immC = (relocation & 0x00000002) >> 1; | |
13020 | ||
13021 | upper_insn = (upper_insn & 0xff80) | immA; | |
13022 | lower_insn = (lower_insn & 0xf001) | (immC << 11) | (immB << 1); | |
13023 | } | |
13024 | ||
13025 | /* Put the relocated value back in the object file: */ | |
13026 | bfd_put_16 (input_bfd, upper_insn, hit_data); | |
13027 | bfd_put_16 (input_bfd, lower_insn, hit_data + 2); | |
13028 | ||
13029 | return bfd_reloc_ok; | |
13030 | } | |
13031 | ||
252b5132 RH |
13032 | default: |
13033 | return bfd_reloc_notsupported; | |
13034 | } | |
13035 | } | |
13036 | ||
98c1d4aa NC |
13037 | /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */ |
13038 | static void | |
07d6d2b8 AM |
13039 | arm_add_to_rel (bfd * abfd, |
13040 | bfd_byte * address, | |
57e8b36a | 13041 | reloc_howto_type * howto, |
07d6d2b8 | 13042 | bfd_signed_vma increment) |
98c1d4aa | 13043 | { |
98c1d4aa NC |
13044 | bfd_signed_vma addend; |
13045 | ||
bd97cb95 DJ |
13046 | if (howto->type == R_ARM_THM_CALL |
13047 | || howto->type == R_ARM_THM_JUMP24) | |
98c1d4aa | 13048 | { |
9a5aca8c AM |
13049 | int upper_insn, lower_insn; |
13050 | int upper, lower; | |
98c1d4aa | 13051 | |
9a5aca8c AM |
13052 | upper_insn = bfd_get_16 (abfd, address); |
13053 | lower_insn = bfd_get_16 (abfd, address + 2); | |
13054 | upper = upper_insn & 0x7ff; | |
13055 | lower = lower_insn & 0x7ff; | |
13056 | ||
13057 | addend = (upper << 12) | (lower << 1); | |
ddda4409 | 13058 | addend += increment; |
9a5aca8c | 13059 | addend >>= 1; |
98c1d4aa | 13060 | |
9a5aca8c AM |
13061 | upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff); |
13062 | lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff); | |
13063 | ||
dc810e39 AM |
13064 | bfd_put_16 (abfd, (bfd_vma) upper_insn, address); |
13065 | bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2); | |
9a5aca8c AM |
13066 | } |
13067 | else | |
13068 | { | |
07d6d2b8 | 13069 | bfd_vma contents; |
9a5aca8c AM |
13070 | |
13071 | contents = bfd_get_32 (abfd, address); | |
13072 | ||
13073 | /* Get the (signed) value from the instruction. */ | |
13074 | addend = contents & howto->src_mask; | |
13075 | if (addend & ((howto->src_mask + 1) >> 1)) | |
13076 | { | |
13077 | bfd_signed_vma mask; | |
13078 | ||
13079 | mask = -1; | |
13080 | mask &= ~ howto->src_mask; | |
13081 | addend |= mask; | |
13082 | } | |
13083 | ||
13084 | /* Add in the increment, (which is a byte value). */ | |
13085 | switch (howto->type) | |
13086 | { | |
13087 | default: | |
13088 | addend += increment; | |
13089 | break; | |
13090 | ||
13091 | case R_ARM_PC24: | |
c6596c5e | 13092 | case R_ARM_PLT32: |
5b5bb741 PB |
13093 | case R_ARM_CALL: |
13094 | case R_ARM_JUMP24: | |
9a5aca8c | 13095 | addend <<= howto->size; |
dc810e39 | 13096 | addend += increment; |
9a5aca8c AM |
13097 | |
13098 | /* Should we check for overflow here ? */ | |
13099 | ||
13100 | /* Drop any undesired bits. */ | |
13101 | addend >>= howto->rightshift; | |
13102 | break; | |
13103 | } | |
13104 | ||
13105 | contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask); | |
13106 | ||
13107 | bfd_put_32 (abfd, contents, address); | |
ddda4409 | 13108 | } |
98c1d4aa | 13109 | } |
252b5132 | 13110 | |
ba93b8ac DJ |
13111 | #define IS_ARM_TLS_RELOC(R_TYPE) \ |
13112 | ((R_TYPE) == R_ARM_TLS_GD32 \ | |
5c5a4843 | 13113 | || (R_TYPE) == R_ARM_TLS_GD32_FDPIC \ |
ba93b8ac DJ |
13114 | || (R_TYPE) == R_ARM_TLS_LDO32 \ |
13115 | || (R_TYPE) == R_ARM_TLS_LDM32 \ | |
5c5a4843 | 13116 | || (R_TYPE) == R_ARM_TLS_LDM32_FDPIC \ |
ba93b8ac DJ |
13117 | || (R_TYPE) == R_ARM_TLS_DTPOFF32 \ |
13118 | || (R_TYPE) == R_ARM_TLS_DTPMOD32 \ | |
13119 | || (R_TYPE) == R_ARM_TLS_TPOFF32 \ | |
13120 | || (R_TYPE) == R_ARM_TLS_LE32 \ | |
0855e32b | 13121 | || (R_TYPE) == R_ARM_TLS_IE32 \ |
5c5a4843 | 13122 | || (R_TYPE) == R_ARM_TLS_IE32_FDPIC \ |
0855e32b NS |
13123 | || IS_ARM_TLS_GNU_RELOC (R_TYPE)) |
13124 | ||
13125 | /* Specific set of relocations for the gnu tls dialect. */ | |
13126 | #define IS_ARM_TLS_GNU_RELOC(R_TYPE) \ | |
13127 | ((R_TYPE) == R_ARM_TLS_GOTDESC \ | |
13128 | || (R_TYPE) == R_ARM_TLS_CALL \ | |
13129 | || (R_TYPE) == R_ARM_THM_TLS_CALL \ | |
13130 | || (R_TYPE) == R_ARM_TLS_DESCSEQ \ | |
13131 | || (R_TYPE) == R_ARM_THM_TLS_DESCSEQ) | |
ba93b8ac | 13132 | |
252b5132 | 13133 | /* Relocate an ARM ELF section. */ |
906e58ca | 13134 | |
b34976b6 | 13135 | static bfd_boolean |
07d6d2b8 | 13136 | elf32_arm_relocate_section (bfd * output_bfd, |
57e8b36a | 13137 | struct bfd_link_info * info, |
07d6d2b8 AM |
13138 | bfd * input_bfd, |
13139 | asection * input_section, | |
13140 | bfd_byte * contents, | |
13141 | Elf_Internal_Rela * relocs, | |
13142 | Elf_Internal_Sym * local_syms, | |
13143 | asection ** local_sections) | |
252b5132 | 13144 | { |
b34976b6 AM |
13145 | Elf_Internal_Shdr *symtab_hdr; |
13146 | struct elf_link_hash_entry **sym_hashes; | |
13147 | Elf_Internal_Rela *rel; | |
13148 | Elf_Internal_Rela *relend; | |
13149 | const char *name; | |
b32d3aa2 | 13150 | struct elf32_arm_link_hash_table * globals; |
252b5132 | 13151 | |
4e7fd91e | 13152 | globals = elf32_arm_hash_table (info); |
4dfe6ac6 NC |
13153 | if (globals == NULL) |
13154 | return FALSE; | |
b491616a | 13155 | |
0ffa91dd | 13156 | symtab_hdr = & elf_symtab_hdr (input_bfd); |
252b5132 RH |
13157 | sym_hashes = elf_sym_hashes (input_bfd); |
13158 | ||
13159 | rel = relocs; | |
13160 | relend = relocs + input_section->reloc_count; | |
13161 | for (; rel < relend; rel++) | |
13162 | { | |
07d6d2b8 AM |
13163 | int r_type; |
13164 | reloc_howto_type * howto; | |
13165 | unsigned long r_symndx; | |
13166 | Elf_Internal_Sym * sym; | |
13167 | asection * sec; | |
252b5132 | 13168 | struct elf_link_hash_entry * h; |
07d6d2b8 AM |
13169 | bfd_vma relocation; |
13170 | bfd_reloc_status_type r; | |
13171 | arelent bfd_reloc; | |
13172 | char sym_type; | |
13173 | bfd_boolean unresolved_reloc = FALSE; | |
f2a9dd69 | 13174 | char *error_message = NULL; |
f21f3fe0 | 13175 | |
252b5132 | 13176 | r_symndx = ELF32_R_SYM (rel->r_info); |
ba96a88f | 13177 | r_type = ELF32_R_TYPE (rel->r_info); |
b32d3aa2 | 13178 | r_type = arm_real_reloc_type (globals, r_type); |
252b5132 | 13179 | |
ba96a88f | 13180 | if ( r_type == R_ARM_GNU_VTENTRY |
99059e56 RM |
13181 | || r_type == R_ARM_GNU_VTINHERIT) |
13182 | continue; | |
252b5132 | 13183 | |
47aeb64c NC |
13184 | howto = bfd_reloc.howto = elf32_arm_howto_from_type (r_type); |
13185 | ||
13186 | if (howto == NULL) | |
13187 | return _bfd_unrecognized_reloc (input_bfd, input_section, r_type); | |
252b5132 | 13188 | |
252b5132 RH |
13189 | h = NULL; |
13190 | sym = NULL; | |
13191 | sec = NULL; | |
9b485d32 | 13192 | |
252b5132 RH |
13193 | if (r_symndx < symtab_hdr->sh_info) |
13194 | { | |
13195 | sym = local_syms + r_symndx; | |
ba93b8ac | 13196 | sym_type = ELF32_ST_TYPE (sym->st_info); |
252b5132 | 13197 | sec = local_sections[r_symndx]; |
ffcb4889 NS |
13198 | |
13199 | /* An object file might have a reference to a local | |
13200 | undefined symbol. This is a daft object file, but we | |
13201 | should at least do something about it. V4BX & NONE | |
13202 | relocations do not use the symbol and are explicitly | |
77b4f08f TS |
13203 | allowed to use the undefined symbol, so allow those. |
13204 | Likewise for relocations against STN_UNDEF. */ | |
ffcb4889 NS |
13205 | if (r_type != R_ARM_V4BX |
13206 | && r_type != R_ARM_NONE | |
77b4f08f | 13207 | && r_symndx != STN_UNDEF |
ffcb4889 NS |
13208 | && bfd_is_und_section (sec) |
13209 | && ELF_ST_BIND (sym->st_info) != STB_WEAK) | |
1a72702b AM |
13210 | (*info->callbacks->undefined_symbol) |
13211 | (info, bfd_elf_string_from_elf_section | |
13212 | (input_bfd, symtab_hdr->sh_link, sym->st_name), | |
13213 | input_bfd, input_section, | |
13214 | rel->r_offset, TRUE); | |
b38cadfb | 13215 | |
4e7fd91e | 13216 | if (globals->use_rel) |
f8df10f4 | 13217 | { |
4e7fd91e PB |
13218 | relocation = (sec->output_section->vma |
13219 | + sec->output_offset | |
13220 | + sym->st_value); | |
0e1862bb | 13221 | if (!bfd_link_relocatable (info) |
ab96bf03 AM |
13222 | && (sec->flags & SEC_MERGE) |
13223 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
f8df10f4 | 13224 | { |
4e7fd91e PB |
13225 | asection *msec; |
13226 | bfd_vma addend, value; | |
13227 | ||
39623e12 | 13228 | switch (r_type) |
4e7fd91e | 13229 | { |
39623e12 PB |
13230 | case R_ARM_MOVW_ABS_NC: |
13231 | case R_ARM_MOVT_ABS: | |
13232 | value = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
13233 | addend = ((value & 0xf0000) >> 4) | (value & 0xfff); | |
13234 | addend = (addend ^ 0x8000) - 0x8000; | |
13235 | break; | |
f8df10f4 | 13236 | |
39623e12 PB |
13237 | case R_ARM_THM_MOVW_ABS_NC: |
13238 | case R_ARM_THM_MOVT_ABS: | |
13239 | value = bfd_get_16 (input_bfd, contents + rel->r_offset) | |
13240 | << 16; | |
13241 | value |= bfd_get_16 (input_bfd, | |
13242 | contents + rel->r_offset + 2); | |
13243 | addend = ((value & 0xf7000) >> 4) | (value & 0xff) | |
13244 | | ((value & 0x04000000) >> 15); | |
13245 | addend = (addend ^ 0x8000) - 0x8000; | |
13246 | break; | |
f8df10f4 | 13247 | |
39623e12 PB |
13248 | default: |
13249 | if (howto->rightshift | |
13250 | || (howto->src_mask & (howto->src_mask + 1))) | |
13251 | { | |
4eca0228 | 13252 | _bfd_error_handler |
695344c0 | 13253 | /* xgettext:c-format */ |
2dcf00ce AM |
13254 | (_("%pB(%pA+%#" PRIx64 "): " |
13255 | "%s relocation against SEC_MERGE section"), | |
39623e12 | 13256 | input_bfd, input_section, |
2dcf00ce | 13257 | (uint64_t) rel->r_offset, howto->name); |
39623e12 PB |
13258 | return FALSE; |
13259 | } | |
13260 | ||
13261 | value = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
13262 | ||
13263 | /* Get the (signed) value from the instruction. */ | |
13264 | addend = value & howto->src_mask; | |
13265 | if (addend & ((howto->src_mask + 1) >> 1)) | |
13266 | { | |
13267 | bfd_signed_vma mask; | |
13268 | ||
13269 | mask = -1; | |
13270 | mask &= ~ howto->src_mask; | |
13271 | addend |= mask; | |
13272 | } | |
13273 | break; | |
4e7fd91e | 13274 | } |
39623e12 | 13275 | |
4e7fd91e PB |
13276 | msec = sec; |
13277 | addend = | |
13278 | _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend) | |
13279 | - relocation; | |
13280 | addend += msec->output_section->vma + msec->output_offset; | |
39623e12 | 13281 | |
cc643b88 | 13282 | /* Cases here must match those in the preceding |
39623e12 PB |
13283 | switch statement. */ |
13284 | switch (r_type) | |
13285 | { | |
13286 | case R_ARM_MOVW_ABS_NC: | |
13287 | case R_ARM_MOVT_ABS: | |
13288 | value = (value & 0xfff0f000) | ((addend & 0xf000) << 4) | |
13289 | | (addend & 0xfff); | |
13290 | bfd_put_32 (input_bfd, value, contents + rel->r_offset); | |
13291 | break; | |
13292 | ||
13293 | case R_ARM_THM_MOVW_ABS_NC: | |
13294 | case R_ARM_THM_MOVT_ABS: | |
13295 | value = (value & 0xfbf08f00) | ((addend & 0xf700) << 4) | |
13296 | | (addend & 0xff) | ((addend & 0x0800) << 15); | |
13297 | bfd_put_16 (input_bfd, value >> 16, | |
13298 | contents + rel->r_offset); | |
13299 | bfd_put_16 (input_bfd, value, | |
13300 | contents + rel->r_offset + 2); | |
13301 | break; | |
13302 | ||
13303 | default: | |
13304 | value = (value & ~ howto->dst_mask) | |
13305 | | (addend & howto->dst_mask); | |
13306 | bfd_put_32 (input_bfd, value, contents + rel->r_offset); | |
13307 | break; | |
13308 | } | |
f8df10f4 | 13309 | } |
f8df10f4 | 13310 | } |
4e7fd91e PB |
13311 | else |
13312 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
252b5132 RH |
13313 | } |
13314 | else | |
13315 | { | |
62d887d4 | 13316 | bfd_boolean warned, ignored; |
560e09e9 | 13317 | |
b2a8e766 AM |
13318 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
13319 | r_symndx, symtab_hdr, sym_hashes, | |
13320 | h, sec, relocation, | |
62d887d4 | 13321 | unresolved_reloc, warned, ignored); |
ba93b8ac DJ |
13322 | |
13323 | sym_type = h->type; | |
252b5132 RH |
13324 | } |
13325 | ||
dbaa2011 | 13326 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 13327 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 13328 | rel, 1, relend, howto, 0, contents); |
ab96bf03 | 13329 | |
0e1862bb | 13330 | if (bfd_link_relocatable (info)) |
ab96bf03 AM |
13331 | { |
13332 | /* This is a relocatable link. We don't have to change | |
13333 | anything, unless the reloc is against a section symbol, | |
13334 | in which case we have to adjust according to where the | |
13335 | section symbol winds up in the output section. */ | |
13336 | if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
13337 | { | |
13338 | if (globals->use_rel) | |
13339 | arm_add_to_rel (input_bfd, contents + rel->r_offset, | |
13340 | howto, (bfd_signed_vma) sec->output_offset); | |
13341 | else | |
13342 | rel->r_addend += sec->output_offset; | |
13343 | } | |
13344 | continue; | |
13345 | } | |
13346 | ||
252b5132 RH |
13347 | if (h != NULL) |
13348 | name = h->root.root.string; | |
13349 | else | |
13350 | { | |
13351 | name = (bfd_elf_string_from_elf_section | |
13352 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
13353 | if (name == NULL || *name == '\0') | |
13354 | name = bfd_section_name (input_bfd, sec); | |
13355 | } | |
f21f3fe0 | 13356 | |
cf35638d | 13357 | if (r_symndx != STN_UNDEF |
ba93b8ac DJ |
13358 | && r_type != R_ARM_NONE |
13359 | && (h == NULL | |
13360 | || h->root.type == bfd_link_hash_defined | |
13361 | || h->root.type == bfd_link_hash_defweak) | |
13362 | && IS_ARM_TLS_RELOC (r_type) != (sym_type == STT_TLS)) | |
13363 | { | |
4eca0228 | 13364 | _bfd_error_handler |
ba93b8ac | 13365 | ((sym_type == STT_TLS |
695344c0 | 13366 | /* xgettext:c-format */ |
2dcf00ce | 13367 | ? _("%pB(%pA+%#" PRIx64 "): %s used with TLS symbol %s") |
695344c0 | 13368 | /* xgettext:c-format */ |
2dcf00ce | 13369 | : _("%pB(%pA+%#" PRIx64 "): %s used with non-TLS symbol %s")), |
ba93b8ac DJ |
13370 | input_bfd, |
13371 | input_section, | |
2dcf00ce | 13372 | (uint64_t) rel->r_offset, |
ba93b8ac DJ |
13373 | howto->name, |
13374 | name); | |
13375 | } | |
13376 | ||
0855e32b | 13377 | /* We call elf32_arm_final_link_relocate unless we're completely |
99059e56 RM |
13378 | done, i.e., the relaxation produced the final output we want, |
13379 | and we won't let anybody mess with it. Also, we have to do | |
13380 | addend adjustments in case of a R_ARM_TLS_GOTDESC relocation | |
6a631e86 | 13381 | both in relaxed and non-relaxed cases. */ |
39d911fc TP |
13382 | if ((elf32_arm_tls_transition (info, r_type, h) != (unsigned)r_type) |
13383 | || (IS_ARM_TLS_GNU_RELOC (r_type) | |
13384 | && !((h ? elf32_arm_hash_entry (h)->tls_type : | |
13385 | elf32_arm_local_got_tls_type (input_bfd)[r_symndx]) | |
13386 | & GOT_TLS_GDESC))) | |
13387 | { | |
13388 | r = elf32_arm_tls_relax (globals, input_bfd, input_section, | |
13389 | contents, rel, h == NULL); | |
13390 | /* This may have been marked unresolved because it came from | |
13391 | a shared library. But we've just dealt with that. */ | |
13392 | unresolved_reloc = 0; | |
13393 | } | |
13394 | else | |
13395 | r = bfd_reloc_continue; | |
b38cadfb | 13396 | |
39d911fc TP |
13397 | if (r == bfd_reloc_continue) |
13398 | { | |
13399 | unsigned char branch_type = | |
13400 | h ? ARM_GET_SYM_BRANCH_TYPE (h->target_internal) | |
13401 | : ARM_GET_SYM_BRANCH_TYPE (sym->st_target_internal); | |
13402 | ||
13403 | r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd, | |
13404 | input_section, contents, rel, | |
13405 | relocation, info, sec, name, | |
13406 | sym_type, branch_type, h, | |
13407 | &unresolved_reloc, | |
13408 | &error_message); | |
13409 | } | |
0945cdfd DJ |
13410 | |
13411 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections | |
13412 | because such sections are not SEC_ALLOC and thus ld.so will | |
13413 | not process them. */ | |
13414 | if (unresolved_reloc | |
99059e56 RM |
13415 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
13416 | && h->def_dynamic) | |
1d5316ab AM |
13417 | && _bfd_elf_section_offset (output_bfd, info, input_section, |
13418 | rel->r_offset) != (bfd_vma) -1) | |
0945cdfd | 13419 | { |
4eca0228 | 13420 | _bfd_error_handler |
695344c0 | 13421 | /* xgettext:c-format */ |
2dcf00ce AM |
13422 | (_("%pB(%pA+%#" PRIx64 "): " |
13423 | "unresolvable %s relocation against symbol `%s'"), | |
843fe662 L |
13424 | input_bfd, |
13425 | input_section, | |
2dcf00ce | 13426 | (uint64_t) rel->r_offset, |
843fe662 L |
13427 | howto->name, |
13428 | h->root.root.string); | |
0945cdfd DJ |
13429 | return FALSE; |
13430 | } | |
252b5132 RH |
13431 | |
13432 | if (r != bfd_reloc_ok) | |
13433 | { | |
252b5132 RH |
13434 | switch (r) |
13435 | { | |
13436 | case bfd_reloc_overflow: | |
cf919dfd PB |
13437 | /* If the overflowing reloc was to an undefined symbol, |
13438 | we have already printed one error message and there | |
13439 | is no point complaining again. */ | |
1a72702b AM |
13440 | if (!h || h->root.type != bfd_link_hash_undefined) |
13441 | (*info->callbacks->reloc_overflow) | |
13442 | (info, (h ? &h->root : NULL), name, howto->name, | |
13443 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
252b5132 RH |
13444 | break; |
13445 | ||
13446 | case bfd_reloc_undefined: | |
1a72702b AM |
13447 | (*info->callbacks->undefined_symbol) |
13448 | (info, name, input_bfd, input_section, rel->r_offset, TRUE); | |
252b5132 RH |
13449 | break; |
13450 | ||
13451 | case bfd_reloc_outofrange: | |
f2a9dd69 | 13452 | error_message = _("out of range"); |
252b5132 RH |
13453 | goto common_error; |
13454 | ||
13455 | case bfd_reloc_notsupported: | |
f2a9dd69 | 13456 | error_message = _("unsupported relocation"); |
252b5132 RH |
13457 | goto common_error; |
13458 | ||
13459 | case bfd_reloc_dangerous: | |
f2a9dd69 | 13460 | /* error_message should already be set. */ |
252b5132 RH |
13461 | goto common_error; |
13462 | ||
13463 | default: | |
f2a9dd69 | 13464 | error_message = _("unknown error"); |
8029a119 | 13465 | /* Fall through. */ |
252b5132 RH |
13466 | |
13467 | common_error: | |
f2a9dd69 | 13468 | BFD_ASSERT (error_message != NULL); |
1a72702b AM |
13469 | (*info->callbacks->reloc_dangerous) |
13470 | (info, error_message, input_bfd, input_section, rel->r_offset); | |
252b5132 RH |
13471 | break; |
13472 | } | |
13473 | } | |
13474 | } | |
13475 | ||
b34976b6 | 13476 | return TRUE; |
252b5132 RH |
13477 | } |
13478 | ||
91d6fa6a | 13479 | /* Add a new unwind edit to the list described by HEAD, TAIL. If TINDEX is zero, |
2468f9c9 | 13480 | adds the edit to the start of the list. (The list must be built in order of |
91d6fa6a | 13481 | ascending TINDEX: the function's callers are primarily responsible for |
2468f9c9 PB |
13482 | maintaining that condition). */ |
13483 | ||
13484 | static void | |
13485 | add_unwind_table_edit (arm_unwind_table_edit **head, | |
13486 | arm_unwind_table_edit **tail, | |
13487 | arm_unwind_edit_type type, | |
13488 | asection *linked_section, | |
91d6fa6a | 13489 | unsigned int tindex) |
2468f9c9 | 13490 | { |
21d799b5 NC |
13491 | arm_unwind_table_edit *new_edit = (arm_unwind_table_edit *) |
13492 | xmalloc (sizeof (arm_unwind_table_edit)); | |
b38cadfb | 13493 | |
2468f9c9 PB |
13494 | new_edit->type = type; |
13495 | new_edit->linked_section = linked_section; | |
91d6fa6a | 13496 | new_edit->index = tindex; |
b38cadfb | 13497 | |
91d6fa6a | 13498 | if (tindex > 0) |
2468f9c9 PB |
13499 | { |
13500 | new_edit->next = NULL; | |
13501 | ||
13502 | if (*tail) | |
13503 | (*tail)->next = new_edit; | |
13504 | ||
13505 | (*tail) = new_edit; | |
13506 | ||
13507 | if (!*head) | |
13508 | (*head) = new_edit; | |
13509 | } | |
13510 | else | |
13511 | { | |
13512 | new_edit->next = *head; | |
13513 | ||
13514 | if (!*tail) | |
13515 | *tail = new_edit; | |
13516 | ||
13517 | *head = new_edit; | |
13518 | } | |
13519 | } | |
13520 | ||
13521 | static _arm_elf_section_data *get_arm_elf_section_data (asection *); | |
13522 | ||
13523 | /* Increase the size of EXIDX_SEC by ADJUST bytes. ADJUST mau be negative. */ | |
13524 | static void | |
13525 | adjust_exidx_size(asection *exidx_sec, int adjust) | |
13526 | { | |
13527 | asection *out_sec; | |
13528 | ||
13529 | if (!exidx_sec->rawsize) | |
13530 | exidx_sec->rawsize = exidx_sec->size; | |
13531 | ||
13532 | bfd_set_section_size (exidx_sec->owner, exidx_sec, exidx_sec->size + adjust); | |
13533 | out_sec = exidx_sec->output_section; | |
13534 | /* Adjust size of output section. */ | |
13535 | bfd_set_section_size (out_sec->owner, out_sec, out_sec->size +adjust); | |
13536 | } | |
13537 | ||
13538 | /* Insert an EXIDX_CANTUNWIND marker at the end of a section. */ | |
13539 | static void | |
13540 | insert_cantunwind_after(asection *text_sec, asection *exidx_sec) | |
13541 | { | |
13542 | struct _arm_elf_section_data *exidx_arm_data; | |
13543 | ||
13544 | exidx_arm_data = get_arm_elf_section_data (exidx_sec); | |
13545 | add_unwind_table_edit ( | |
13546 | &exidx_arm_data->u.exidx.unwind_edit_list, | |
13547 | &exidx_arm_data->u.exidx.unwind_edit_tail, | |
13548 | INSERT_EXIDX_CANTUNWIND_AT_END, text_sec, UINT_MAX); | |
13549 | ||
491d01d3 YU |
13550 | exidx_arm_data->additional_reloc_count++; |
13551 | ||
2468f9c9 PB |
13552 | adjust_exidx_size(exidx_sec, 8); |
13553 | } | |
13554 | ||
13555 | /* Scan .ARM.exidx tables, and create a list describing edits which should be | |
13556 | made to those tables, such that: | |
b38cadfb | 13557 | |
2468f9c9 PB |
13558 | 1. Regions without unwind data are marked with EXIDX_CANTUNWIND entries. |
13559 | 2. Duplicate entries are merged together (EXIDX_CANTUNWIND, or unwind | |
99059e56 | 13560 | codes which have been inlined into the index). |
2468f9c9 | 13561 | |
85fdf906 AH |
13562 | If MERGE_EXIDX_ENTRIES is false, duplicate entries are not merged. |
13563 | ||
2468f9c9 | 13564 | The edits are applied when the tables are written |
b38cadfb | 13565 | (in elf32_arm_write_section). */ |
2468f9c9 PB |
13566 | |
13567 | bfd_boolean | |
13568 | elf32_arm_fix_exidx_coverage (asection **text_section_order, | |
13569 | unsigned int num_text_sections, | |
85fdf906 AH |
13570 | struct bfd_link_info *info, |
13571 | bfd_boolean merge_exidx_entries) | |
2468f9c9 PB |
13572 | { |
13573 | bfd *inp; | |
13574 | unsigned int last_second_word = 0, i; | |
13575 | asection *last_exidx_sec = NULL; | |
13576 | asection *last_text_sec = NULL; | |
13577 | int last_unwind_type = -1; | |
13578 | ||
13579 | /* Walk over all EXIDX sections, and create backlinks from the corrsponding | |
13580 | text sections. */ | |
c72f2fb2 | 13581 | for (inp = info->input_bfds; inp != NULL; inp = inp->link.next) |
2468f9c9 PB |
13582 | { |
13583 | asection *sec; | |
b38cadfb | 13584 | |
2468f9c9 | 13585 | for (sec = inp->sections; sec != NULL; sec = sec->next) |
99059e56 | 13586 | { |
2468f9c9 PB |
13587 | struct bfd_elf_section_data *elf_sec = elf_section_data (sec); |
13588 | Elf_Internal_Shdr *hdr = &elf_sec->this_hdr; | |
b38cadfb | 13589 | |
dec9d5df | 13590 | if (!hdr || hdr->sh_type != SHT_ARM_EXIDX) |
2468f9c9 | 13591 | continue; |
b38cadfb | 13592 | |
2468f9c9 PB |
13593 | if (elf_sec->linked_to) |
13594 | { | |
13595 | Elf_Internal_Shdr *linked_hdr | |
99059e56 | 13596 | = &elf_section_data (elf_sec->linked_to)->this_hdr; |
2468f9c9 | 13597 | struct _arm_elf_section_data *linked_sec_arm_data |
99059e56 | 13598 | = get_arm_elf_section_data (linked_hdr->bfd_section); |
2468f9c9 PB |
13599 | |
13600 | if (linked_sec_arm_data == NULL) | |
99059e56 | 13601 | continue; |
2468f9c9 PB |
13602 | |
13603 | /* Link this .ARM.exidx section back from the text section it | |
99059e56 | 13604 | describes. */ |
2468f9c9 PB |
13605 | linked_sec_arm_data->u.text.arm_exidx_sec = sec; |
13606 | } | |
13607 | } | |
13608 | } | |
13609 | ||
13610 | /* Walk all text sections in order of increasing VMA. Eilminate duplicate | |
13611 | index table entries (EXIDX_CANTUNWIND and inlined unwind opcodes), | |
91d6fa6a | 13612 | and add EXIDX_CANTUNWIND entries for sections with no unwind table data. */ |
2468f9c9 PB |
13613 | |
13614 | for (i = 0; i < num_text_sections; i++) | |
13615 | { | |
13616 | asection *sec = text_section_order[i]; | |
13617 | asection *exidx_sec; | |
13618 | struct _arm_elf_section_data *arm_data = get_arm_elf_section_data (sec); | |
13619 | struct _arm_elf_section_data *exidx_arm_data; | |
13620 | bfd_byte *contents = NULL; | |
13621 | int deleted_exidx_bytes = 0; | |
13622 | bfd_vma j; | |
13623 | arm_unwind_table_edit *unwind_edit_head = NULL; | |
13624 | arm_unwind_table_edit *unwind_edit_tail = NULL; | |
13625 | Elf_Internal_Shdr *hdr; | |
13626 | bfd *ibfd; | |
13627 | ||
13628 | if (arm_data == NULL) | |
99059e56 | 13629 | continue; |
2468f9c9 PB |
13630 | |
13631 | exidx_sec = arm_data->u.text.arm_exidx_sec; | |
13632 | if (exidx_sec == NULL) | |
13633 | { | |
13634 | /* Section has no unwind data. */ | |
13635 | if (last_unwind_type == 0 || !last_exidx_sec) | |
13636 | continue; | |
13637 | ||
13638 | /* Ignore zero sized sections. */ | |
13639 | if (sec->size == 0) | |
13640 | continue; | |
13641 | ||
13642 | insert_cantunwind_after(last_text_sec, last_exidx_sec); | |
13643 | last_unwind_type = 0; | |
13644 | continue; | |
13645 | } | |
13646 | ||
22a8f80e PB |
13647 | /* Skip /DISCARD/ sections. */ |
13648 | if (bfd_is_abs_section (exidx_sec->output_section)) | |
13649 | continue; | |
13650 | ||
2468f9c9 PB |
13651 | hdr = &elf_section_data (exidx_sec)->this_hdr; |
13652 | if (hdr->sh_type != SHT_ARM_EXIDX) | |
99059e56 | 13653 | continue; |
b38cadfb | 13654 | |
2468f9c9 PB |
13655 | exidx_arm_data = get_arm_elf_section_data (exidx_sec); |
13656 | if (exidx_arm_data == NULL) | |
99059e56 | 13657 | continue; |
b38cadfb | 13658 | |
2468f9c9 | 13659 | ibfd = exidx_sec->owner; |
b38cadfb | 13660 | |
2468f9c9 PB |
13661 | if (hdr->contents != NULL) |
13662 | contents = hdr->contents; | |
13663 | else if (! bfd_malloc_and_get_section (ibfd, exidx_sec, &contents)) | |
13664 | /* An error? */ | |
13665 | continue; | |
13666 | ||
ac06903d YU |
13667 | if (last_unwind_type > 0) |
13668 | { | |
13669 | unsigned int first_word = bfd_get_32 (ibfd, contents); | |
13670 | /* Add cantunwind if first unwind item does not match section | |
13671 | start. */ | |
13672 | if (first_word != sec->vma) | |
13673 | { | |
13674 | insert_cantunwind_after (last_text_sec, last_exidx_sec); | |
13675 | last_unwind_type = 0; | |
13676 | } | |
13677 | } | |
13678 | ||
2468f9c9 PB |
13679 | for (j = 0; j < hdr->sh_size; j += 8) |
13680 | { | |
13681 | unsigned int second_word = bfd_get_32 (ibfd, contents + j + 4); | |
13682 | int unwind_type; | |
13683 | int elide = 0; | |
13684 | ||
13685 | /* An EXIDX_CANTUNWIND entry. */ | |
13686 | if (second_word == 1) | |
13687 | { | |
13688 | if (last_unwind_type == 0) | |
13689 | elide = 1; | |
13690 | unwind_type = 0; | |
13691 | } | |
13692 | /* Inlined unwinding data. Merge if equal to previous. */ | |
13693 | else if ((second_word & 0x80000000) != 0) | |
13694 | { | |
85fdf906 AH |
13695 | if (merge_exidx_entries |
13696 | && last_second_word == second_word && last_unwind_type == 1) | |
2468f9c9 PB |
13697 | elide = 1; |
13698 | unwind_type = 1; | |
13699 | last_second_word = second_word; | |
13700 | } | |
13701 | /* Normal table entry. In theory we could merge these too, | |
13702 | but duplicate entries are likely to be much less common. */ | |
13703 | else | |
13704 | unwind_type = 2; | |
13705 | ||
491d01d3 | 13706 | if (elide && !bfd_link_relocatable (info)) |
2468f9c9 PB |
13707 | { |
13708 | add_unwind_table_edit (&unwind_edit_head, &unwind_edit_tail, | |
13709 | DELETE_EXIDX_ENTRY, NULL, j / 8); | |
13710 | ||
13711 | deleted_exidx_bytes += 8; | |
13712 | } | |
13713 | ||
13714 | last_unwind_type = unwind_type; | |
13715 | } | |
13716 | ||
13717 | /* Free contents if we allocated it ourselves. */ | |
13718 | if (contents != hdr->contents) | |
99059e56 | 13719 | free (contents); |
2468f9c9 PB |
13720 | |
13721 | /* Record edits to be applied later (in elf32_arm_write_section). */ | |
13722 | exidx_arm_data->u.exidx.unwind_edit_list = unwind_edit_head; | |
13723 | exidx_arm_data->u.exidx.unwind_edit_tail = unwind_edit_tail; | |
b38cadfb | 13724 | |
2468f9c9 PB |
13725 | if (deleted_exidx_bytes > 0) |
13726 | adjust_exidx_size(exidx_sec, -deleted_exidx_bytes); | |
13727 | ||
13728 | last_exidx_sec = exidx_sec; | |
13729 | last_text_sec = sec; | |
13730 | } | |
13731 | ||
13732 | /* Add terminating CANTUNWIND entry. */ | |
491d01d3 YU |
13733 | if (!bfd_link_relocatable (info) && last_exidx_sec |
13734 | && last_unwind_type != 0) | |
2468f9c9 PB |
13735 | insert_cantunwind_after(last_text_sec, last_exidx_sec); |
13736 | ||
13737 | return TRUE; | |
13738 | } | |
13739 | ||
3e6b1042 DJ |
13740 | static bfd_boolean |
13741 | elf32_arm_output_glue_section (struct bfd_link_info *info, bfd *obfd, | |
13742 | bfd *ibfd, const char *name) | |
13743 | { | |
13744 | asection *sec, *osec; | |
13745 | ||
3d4d4302 | 13746 | sec = bfd_get_linker_section (ibfd, name); |
3e6b1042 DJ |
13747 | if (sec == NULL || (sec->flags & SEC_EXCLUDE) != 0) |
13748 | return TRUE; | |
13749 | ||
13750 | osec = sec->output_section; | |
13751 | if (elf32_arm_write_section (obfd, info, sec, sec->contents)) | |
13752 | return TRUE; | |
13753 | ||
13754 | if (! bfd_set_section_contents (obfd, osec, sec->contents, | |
13755 | sec->output_offset, sec->size)) | |
13756 | return FALSE; | |
13757 | ||
13758 | return TRUE; | |
13759 | } | |
13760 | ||
13761 | static bfd_boolean | |
13762 | elf32_arm_final_link (bfd *abfd, struct bfd_link_info *info) | |
13763 | { | |
13764 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (info); | |
fe33d2fa | 13765 | asection *sec, *osec; |
3e6b1042 | 13766 | |
4dfe6ac6 NC |
13767 | if (globals == NULL) |
13768 | return FALSE; | |
13769 | ||
3e6b1042 DJ |
13770 | /* Invoke the regular ELF backend linker to do all the work. */ |
13771 | if (!bfd_elf_final_link (abfd, info)) | |
13772 | return FALSE; | |
13773 | ||
fe33d2fa CL |
13774 | /* Process stub sections (eg BE8 encoding, ...). */ |
13775 | struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info); | |
7292b3ac | 13776 | unsigned int i; |
cdb21a0a NS |
13777 | for (i=0; i<htab->top_id; i++) |
13778 | { | |
13779 | sec = htab->stub_group[i].stub_sec; | |
13780 | /* Only process it once, in its link_sec slot. */ | |
13781 | if (sec && i == htab->stub_group[i].link_sec->id) | |
13782 | { | |
13783 | osec = sec->output_section; | |
13784 | elf32_arm_write_section (abfd, info, sec, sec->contents); | |
13785 | if (! bfd_set_section_contents (abfd, osec, sec->contents, | |
13786 | sec->output_offset, sec->size)) | |
13787 | return FALSE; | |
13788 | } | |
fe33d2fa | 13789 | } |
fe33d2fa | 13790 | |
3e6b1042 DJ |
13791 | /* Write out any glue sections now that we have created all the |
13792 | stubs. */ | |
13793 | if (globals->bfd_of_glue_owner != NULL) | |
13794 | { | |
13795 | if (! elf32_arm_output_glue_section (info, abfd, | |
13796 | globals->bfd_of_glue_owner, | |
13797 | ARM2THUMB_GLUE_SECTION_NAME)) | |
13798 | return FALSE; | |
13799 | ||
13800 | if (! elf32_arm_output_glue_section (info, abfd, | |
13801 | globals->bfd_of_glue_owner, | |
13802 | THUMB2ARM_GLUE_SECTION_NAME)) | |
13803 | return FALSE; | |
13804 | ||
13805 | if (! elf32_arm_output_glue_section (info, abfd, | |
13806 | globals->bfd_of_glue_owner, | |
13807 | VFP11_ERRATUM_VENEER_SECTION_NAME)) | |
13808 | return FALSE; | |
13809 | ||
a504d23a LA |
13810 | if (! elf32_arm_output_glue_section (info, abfd, |
13811 | globals->bfd_of_glue_owner, | |
13812 | STM32L4XX_ERRATUM_VENEER_SECTION_NAME)) | |
13813 | return FALSE; | |
13814 | ||
3e6b1042 DJ |
13815 | if (! elf32_arm_output_glue_section (info, abfd, |
13816 | globals->bfd_of_glue_owner, | |
13817 | ARM_BX_GLUE_SECTION_NAME)) | |
13818 | return FALSE; | |
13819 | } | |
13820 | ||
13821 | return TRUE; | |
13822 | } | |
13823 | ||
5968a7b8 NC |
13824 | /* Return a best guess for the machine number based on the attributes. */ |
13825 | ||
13826 | static unsigned int | |
13827 | bfd_arm_get_mach_from_attributes (bfd * abfd) | |
13828 | { | |
13829 | int arch = bfd_elf_get_obj_attr_int (abfd, OBJ_ATTR_PROC, Tag_CPU_arch); | |
13830 | ||
13831 | switch (arch) | |
13832 | { | |
c0c468d5 | 13833 | case TAG_CPU_ARCH_PRE_V4: return bfd_mach_arm_3M; |
5968a7b8 NC |
13834 | case TAG_CPU_ARCH_V4: return bfd_mach_arm_4; |
13835 | case TAG_CPU_ARCH_V4T: return bfd_mach_arm_4T; | |
13836 | case TAG_CPU_ARCH_V5T: return bfd_mach_arm_5T; | |
13837 | ||
13838 | case TAG_CPU_ARCH_V5TE: | |
13839 | { | |
13840 | char * name; | |
13841 | ||
13842 | BFD_ASSERT (Tag_CPU_name < NUM_KNOWN_OBJ_ATTRIBUTES); | |
13843 | name = elf_known_obj_attributes (abfd) [OBJ_ATTR_PROC][Tag_CPU_name].s; | |
13844 | ||
13845 | if (name) | |
13846 | { | |
13847 | if (strcmp (name, "IWMMXT2") == 0) | |
13848 | return bfd_mach_arm_iWMMXt2; | |
13849 | ||
13850 | if (strcmp (name, "IWMMXT") == 0) | |
6034aab8 | 13851 | return bfd_mach_arm_iWMMXt; |
088ca6c1 NC |
13852 | |
13853 | if (strcmp (name, "XSCALE") == 0) | |
13854 | { | |
13855 | int wmmx; | |
13856 | ||
13857 | BFD_ASSERT (Tag_WMMX_arch < NUM_KNOWN_OBJ_ATTRIBUTES); | |
13858 | wmmx = elf_known_obj_attributes (abfd) [OBJ_ATTR_PROC][Tag_WMMX_arch].i; | |
13859 | switch (wmmx) | |
13860 | { | |
13861 | case 1: return bfd_mach_arm_iWMMXt; | |
13862 | case 2: return bfd_mach_arm_iWMMXt2; | |
13863 | default: return bfd_mach_arm_XScale; | |
13864 | } | |
13865 | } | |
5968a7b8 NC |
13866 | } |
13867 | ||
13868 | return bfd_mach_arm_5TE; | |
13869 | } | |
13870 | ||
c0c468d5 TP |
13871 | case TAG_CPU_ARCH_V5TEJ: |
13872 | return bfd_mach_arm_5TEJ; | |
13873 | case TAG_CPU_ARCH_V6: | |
13874 | return bfd_mach_arm_6; | |
13875 | case TAG_CPU_ARCH_V6KZ: | |
13876 | return bfd_mach_arm_6KZ; | |
13877 | case TAG_CPU_ARCH_V6T2: | |
13878 | return bfd_mach_arm_6T2; | |
13879 | case TAG_CPU_ARCH_V6K: | |
13880 | return bfd_mach_arm_6K; | |
13881 | case TAG_CPU_ARCH_V7: | |
13882 | return bfd_mach_arm_7; | |
13883 | case TAG_CPU_ARCH_V6_M: | |
13884 | return bfd_mach_arm_6M; | |
13885 | case TAG_CPU_ARCH_V6S_M: | |
13886 | return bfd_mach_arm_6SM; | |
13887 | case TAG_CPU_ARCH_V7E_M: | |
13888 | return bfd_mach_arm_7EM; | |
13889 | case TAG_CPU_ARCH_V8: | |
13890 | return bfd_mach_arm_8; | |
13891 | case TAG_CPU_ARCH_V8R: | |
13892 | return bfd_mach_arm_8R; | |
13893 | case TAG_CPU_ARCH_V8M_BASE: | |
13894 | return bfd_mach_arm_8M_BASE; | |
13895 | case TAG_CPU_ARCH_V8M_MAIN: | |
13896 | return bfd_mach_arm_8M_MAIN; | |
031254f2 AV |
13897 | case TAG_CPU_ARCH_V8_1M_MAIN: |
13898 | return bfd_mach_arm_8_1M_MAIN; | |
c0c468d5 | 13899 | |
5968a7b8 | 13900 | default: |
c0c468d5 TP |
13901 | /* Force entry to be added for any new known Tag_CPU_arch value. */ |
13902 | BFD_ASSERT (arch > MAX_TAG_CPU_ARCH); | |
13903 | ||
13904 | /* Unknown Tag_CPU_arch value. */ | |
5968a7b8 NC |
13905 | return bfd_mach_arm_unknown; |
13906 | } | |
13907 | } | |
13908 | ||
c178919b NC |
13909 | /* Set the right machine number. */ |
13910 | ||
13911 | static bfd_boolean | |
57e8b36a | 13912 | elf32_arm_object_p (bfd *abfd) |
c178919b | 13913 | { |
5a6c6817 | 13914 | unsigned int mach; |
57e8b36a | 13915 | |
5a6c6817 | 13916 | mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION); |
c178919b | 13917 | |
5968a7b8 NC |
13918 | if (mach == bfd_mach_arm_unknown) |
13919 | { | |
13920 | if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT) | |
13921 | mach = bfd_mach_arm_ep9312; | |
13922 | else | |
13923 | mach = bfd_arm_get_mach_from_attributes (abfd); | |
13924 | } | |
c178919b | 13925 | |
5968a7b8 | 13926 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach); |
c178919b NC |
13927 | return TRUE; |
13928 | } | |
13929 | ||
fc830a83 | 13930 | /* Function to keep ARM specific flags in the ELF header. */ |
3c9458e9 | 13931 | |
b34976b6 | 13932 | static bfd_boolean |
57e8b36a | 13933 | elf32_arm_set_private_flags (bfd *abfd, flagword flags) |
252b5132 RH |
13934 | { |
13935 | if (elf_flags_init (abfd) | |
13936 | && elf_elfheader (abfd)->e_flags != flags) | |
13937 | { | |
fc830a83 NC |
13938 | if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN) |
13939 | { | |
fd2ec330 | 13940 | if (flags & EF_ARM_INTERWORK) |
4eca0228 | 13941 | _bfd_error_handler |
90b6238f | 13942 | (_("warning: not setting interworking flag of %pB since it has already been specified as non-interworking"), |
d003868e | 13943 | abfd); |
fc830a83 | 13944 | else |
d003868e | 13945 | _bfd_error_handler |
90b6238f | 13946 | (_("warning: clearing the interworking flag of %pB due to outside request"), |
d003868e | 13947 | abfd); |
fc830a83 | 13948 | } |
252b5132 RH |
13949 | } |
13950 | else | |
13951 | { | |
13952 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 | 13953 | elf_flags_init (abfd) = TRUE; |
252b5132 RH |
13954 | } |
13955 | ||
b34976b6 | 13956 | return TRUE; |
252b5132 RH |
13957 | } |
13958 | ||
fc830a83 | 13959 | /* Copy backend specific data from one object module to another. */ |
9b485d32 | 13960 | |
b34976b6 | 13961 | static bfd_boolean |
57e8b36a | 13962 | elf32_arm_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
252b5132 RH |
13963 | { |
13964 | flagword in_flags; | |
13965 | flagword out_flags; | |
13966 | ||
0ffa91dd | 13967 | if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd)) |
b34976b6 | 13968 | return TRUE; |
252b5132 | 13969 | |
fc830a83 | 13970 | in_flags = elf_elfheader (ibfd)->e_flags; |
252b5132 RH |
13971 | out_flags = elf_elfheader (obfd)->e_flags; |
13972 | ||
fc830a83 NC |
13973 | if (elf_flags_init (obfd) |
13974 | && EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN | |
13975 | && in_flags != out_flags) | |
252b5132 | 13976 | { |
252b5132 | 13977 | /* Cannot mix APCS26 and APCS32 code. */ |
fd2ec330 | 13978 | if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26)) |
b34976b6 | 13979 | return FALSE; |
252b5132 RH |
13980 | |
13981 | /* Cannot mix float APCS and non-float APCS code. */ | |
fd2ec330 | 13982 | if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT)) |
b34976b6 | 13983 | return FALSE; |
252b5132 RH |
13984 | |
13985 | /* If the src and dest have different interworking flags | |
99059e56 | 13986 | then turn off the interworking bit. */ |
fd2ec330 | 13987 | if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK)) |
252b5132 | 13988 | { |
fd2ec330 | 13989 | if (out_flags & EF_ARM_INTERWORK) |
d003868e | 13990 | _bfd_error_handler |
90b6238f | 13991 | (_("warning: clearing the interworking flag of %pB because non-interworking code in %pB has been linked with it"), |
d003868e | 13992 | obfd, ibfd); |
252b5132 | 13993 | |
fd2ec330 | 13994 | in_flags &= ~EF_ARM_INTERWORK; |
252b5132 | 13995 | } |
1006ba19 PB |
13996 | |
13997 | /* Likewise for PIC, though don't warn for this case. */ | |
fd2ec330 PB |
13998 | if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC)) |
13999 | in_flags &= ~EF_ARM_PIC; | |
252b5132 RH |
14000 | } |
14001 | ||
14002 | elf_elfheader (obfd)->e_flags = in_flags; | |
b34976b6 | 14003 | elf_flags_init (obfd) = TRUE; |
252b5132 | 14004 | |
e2349352 | 14005 | return _bfd_elf_copy_private_bfd_data (ibfd, obfd); |
ee065d83 PB |
14006 | } |
14007 | ||
14008 | /* Values for Tag_ABI_PCS_R9_use. */ | |
14009 | enum | |
14010 | { | |
14011 | AEABI_R9_V6, | |
14012 | AEABI_R9_SB, | |
14013 | AEABI_R9_TLS, | |
14014 | AEABI_R9_unused | |
14015 | }; | |
14016 | ||
14017 | /* Values for Tag_ABI_PCS_RW_data. */ | |
14018 | enum | |
14019 | { | |
14020 | AEABI_PCS_RW_data_absolute, | |
14021 | AEABI_PCS_RW_data_PCrel, | |
14022 | AEABI_PCS_RW_data_SBrel, | |
14023 | AEABI_PCS_RW_data_unused | |
14024 | }; | |
14025 | ||
14026 | /* Values for Tag_ABI_enum_size. */ | |
14027 | enum | |
14028 | { | |
14029 | AEABI_enum_unused, | |
14030 | AEABI_enum_short, | |
14031 | AEABI_enum_wide, | |
14032 | AEABI_enum_forced_wide | |
14033 | }; | |
14034 | ||
104d59d1 JM |
14035 | /* Determine whether an object attribute tag takes an integer, a |
14036 | string or both. */ | |
906e58ca | 14037 | |
104d59d1 JM |
14038 | static int |
14039 | elf32_arm_obj_attrs_arg_type (int tag) | |
14040 | { | |
14041 | if (tag == Tag_compatibility) | |
3483fe2e | 14042 | return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_STR_VAL; |
2d0bb761 | 14043 | else if (tag == Tag_nodefaults) |
3483fe2e AS |
14044 | return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_NO_DEFAULT; |
14045 | else if (tag == Tag_CPU_raw_name || tag == Tag_CPU_name) | |
14046 | return ATTR_TYPE_FLAG_STR_VAL; | |
104d59d1 | 14047 | else if (tag < 32) |
3483fe2e | 14048 | return ATTR_TYPE_FLAG_INT_VAL; |
104d59d1 | 14049 | else |
3483fe2e | 14050 | return (tag & 1) != 0 ? ATTR_TYPE_FLAG_STR_VAL : ATTR_TYPE_FLAG_INT_VAL; |
104d59d1 JM |
14051 | } |
14052 | ||
5aa6ff7c AS |
14053 | /* The ABI defines that Tag_conformance should be emitted first, and that |
14054 | Tag_nodefaults should be second (if either is defined). This sets those | |
14055 | two positions, and bumps up the position of all the remaining tags to | |
14056 | compensate. */ | |
14057 | static int | |
14058 | elf32_arm_obj_attrs_order (int num) | |
14059 | { | |
3de4a297 | 14060 | if (num == LEAST_KNOWN_OBJ_ATTRIBUTE) |
5aa6ff7c | 14061 | return Tag_conformance; |
3de4a297 | 14062 | if (num == LEAST_KNOWN_OBJ_ATTRIBUTE + 1) |
5aa6ff7c AS |
14063 | return Tag_nodefaults; |
14064 | if ((num - 2) < Tag_nodefaults) | |
14065 | return num - 2; | |
14066 | if ((num - 1) < Tag_conformance) | |
14067 | return num - 1; | |
14068 | return num; | |
14069 | } | |
14070 | ||
e8b36cd1 JM |
14071 | /* Attribute numbers >=64 (mod 128) can be safely ignored. */ |
14072 | static bfd_boolean | |
14073 | elf32_arm_obj_attrs_handle_unknown (bfd *abfd, int tag) | |
14074 | { | |
14075 | if ((tag & 127) < 64) | |
14076 | { | |
14077 | _bfd_error_handler | |
90b6238f | 14078 | (_("%pB: unknown mandatory EABI object attribute %d"), |
e8b36cd1 JM |
14079 | abfd, tag); |
14080 | bfd_set_error (bfd_error_bad_value); | |
14081 | return FALSE; | |
14082 | } | |
14083 | else | |
14084 | { | |
14085 | _bfd_error_handler | |
90b6238f | 14086 | (_("warning: %pB: unknown EABI object attribute %d"), |
e8b36cd1 JM |
14087 | abfd, tag); |
14088 | return TRUE; | |
14089 | } | |
14090 | } | |
14091 | ||
91e22acd AS |
14092 | /* Read the architecture from the Tag_also_compatible_with attribute, if any. |
14093 | Returns -1 if no architecture could be read. */ | |
14094 | ||
14095 | static int | |
14096 | get_secondary_compatible_arch (bfd *abfd) | |
14097 | { | |
14098 | obj_attribute *attr = | |
14099 | &elf_known_obj_attributes_proc (abfd)[Tag_also_compatible_with]; | |
14100 | ||
14101 | /* Note: the tag and its argument below are uleb128 values, though | |
14102 | currently-defined values fit in one byte for each. */ | |
14103 | if (attr->s | |
14104 | && attr->s[0] == Tag_CPU_arch | |
14105 | && (attr->s[1] & 128) != 128 | |
14106 | && attr->s[2] == 0) | |
14107 | return attr->s[1]; | |
14108 | ||
14109 | /* This tag is "safely ignorable", so don't complain if it looks funny. */ | |
14110 | return -1; | |
14111 | } | |
14112 | ||
14113 | /* Set, or unset, the architecture of the Tag_also_compatible_with attribute. | |
14114 | The tag is removed if ARCH is -1. */ | |
14115 | ||
8e79c3df | 14116 | static void |
91e22acd | 14117 | set_secondary_compatible_arch (bfd *abfd, int arch) |
8e79c3df | 14118 | { |
91e22acd AS |
14119 | obj_attribute *attr = |
14120 | &elf_known_obj_attributes_proc (abfd)[Tag_also_compatible_with]; | |
8e79c3df | 14121 | |
91e22acd AS |
14122 | if (arch == -1) |
14123 | { | |
14124 | attr->s = NULL; | |
14125 | return; | |
8e79c3df | 14126 | } |
91e22acd AS |
14127 | |
14128 | /* Note: the tag and its argument below are uleb128 values, though | |
14129 | currently-defined values fit in one byte for each. */ | |
14130 | if (!attr->s) | |
21d799b5 | 14131 | attr->s = (char *) bfd_alloc (abfd, 3); |
91e22acd AS |
14132 | attr->s[0] = Tag_CPU_arch; |
14133 | attr->s[1] = arch; | |
14134 | attr->s[2] = '\0'; | |
8e79c3df CM |
14135 | } |
14136 | ||
91e22acd AS |
14137 | /* Combine two values for Tag_CPU_arch, taking secondary compatibility tags |
14138 | into account. */ | |
14139 | ||
14140 | static int | |
14141 | tag_cpu_arch_combine (bfd *ibfd, int oldtag, int *secondary_compat_out, | |
14142 | int newtag, int secondary_compat) | |
8e79c3df | 14143 | { |
91e22acd AS |
14144 | #define T(X) TAG_CPU_ARCH_##X |
14145 | int tagl, tagh, result; | |
14146 | const int v6t2[] = | |
14147 | { | |
14148 | T(V6T2), /* PRE_V4. */ | |
14149 | T(V6T2), /* V4. */ | |
14150 | T(V6T2), /* V4T. */ | |
14151 | T(V6T2), /* V5T. */ | |
14152 | T(V6T2), /* V5TE. */ | |
14153 | T(V6T2), /* V5TEJ. */ | |
14154 | T(V6T2), /* V6. */ | |
14155 | T(V7), /* V6KZ. */ | |
14156 | T(V6T2) /* V6T2. */ | |
14157 | }; | |
14158 | const int v6k[] = | |
14159 | { | |
14160 | T(V6K), /* PRE_V4. */ | |
14161 | T(V6K), /* V4. */ | |
14162 | T(V6K), /* V4T. */ | |
14163 | T(V6K), /* V5T. */ | |
14164 | T(V6K), /* V5TE. */ | |
14165 | T(V6K), /* V5TEJ. */ | |
14166 | T(V6K), /* V6. */ | |
14167 | T(V6KZ), /* V6KZ. */ | |
14168 | T(V7), /* V6T2. */ | |
14169 | T(V6K) /* V6K. */ | |
14170 | }; | |
14171 | const int v7[] = | |
14172 | { | |
14173 | T(V7), /* PRE_V4. */ | |
14174 | T(V7), /* V4. */ | |
14175 | T(V7), /* V4T. */ | |
14176 | T(V7), /* V5T. */ | |
14177 | T(V7), /* V5TE. */ | |
14178 | T(V7), /* V5TEJ. */ | |
14179 | T(V7), /* V6. */ | |
14180 | T(V7), /* V6KZ. */ | |
14181 | T(V7), /* V6T2. */ | |
14182 | T(V7), /* V6K. */ | |
14183 | T(V7) /* V7. */ | |
14184 | }; | |
14185 | const int v6_m[] = | |
14186 | { | |
07d6d2b8 AM |
14187 | -1, /* PRE_V4. */ |
14188 | -1, /* V4. */ | |
91e22acd AS |
14189 | T(V6K), /* V4T. */ |
14190 | T(V6K), /* V5T. */ | |
14191 | T(V6K), /* V5TE. */ | |
14192 | T(V6K), /* V5TEJ. */ | |
14193 | T(V6K), /* V6. */ | |
14194 | T(V6KZ), /* V6KZ. */ | |
14195 | T(V7), /* V6T2. */ | |
14196 | T(V6K), /* V6K. */ | |
14197 | T(V7), /* V7. */ | |
14198 | T(V6_M) /* V6_M. */ | |
14199 | }; | |
14200 | const int v6s_m[] = | |
14201 | { | |
07d6d2b8 AM |
14202 | -1, /* PRE_V4. */ |
14203 | -1, /* V4. */ | |
91e22acd AS |
14204 | T(V6K), /* V4T. */ |
14205 | T(V6K), /* V5T. */ | |
14206 | T(V6K), /* V5TE. */ | |
14207 | T(V6K), /* V5TEJ. */ | |
14208 | T(V6K), /* V6. */ | |
14209 | T(V6KZ), /* V6KZ. */ | |
14210 | T(V7), /* V6T2. */ | |
14211 | T(V6K), /* V6K. */ | |
14212 | T(V7), /* V7. */ | |
14213 | T(V6S_M), /* V6_M. */ | |
14214 | T(V6S_M) /* V6S_M. */ | |
14215 | }; | |
9e3c6df6 PB |
14216 | const int v7e_m[] = |
14217 | { | |
07d6d2b8 AM |
14218 | -1, /* PRE_V4. */ |
14219 | -1, /* V4. */ | |
9e3c6df6 PB |
14220 | T(V7E_M), /* V4T. */ |
14221 | T(V7E_M), /* V5T. */ | |
14222 | T(V7E_M), /* V5TE. */ | |
14223 | T(V7E_M), /* V5TEJ. */ | |
14224 | T(V7E_M), /* V6. */ | |
14225 | T(V7E_M), /* V6KZ. */ | |
14226 | T(V7E_M), /* V6T2. */ | |
14227 | T(V7E_M), /* V6K. */ | |
14228 | T(V7E_M), /* V7. */ | |
14229 | T(V7E_M), /* V6_M. */ | |
14230 | T(V7E_M), /* V6S_M. */ | |
14231 | T(V7E_M) /* V7E_M. */ | |
14232 | }; | |
bca38921 MGD |
14233 | const int v8[] = |
14234 | { | |
14235 | T(V8), /* PRE_V4. */ | |
14236 | T(V8), /* V4. */ | |
14237 | T(V8), /* V4T. */ | |
14238 | T(V8), /* V5T. */ | |
14239 | T(V8), /* V5TE. */ | |
14240 | T(V8), /* V5TEJ. */ | |
14241 | T(V8), /* V6. */ | |
14242 | T(V8), /* V6KZ. */ | |
14243 | T(V8), /* V6T2. */ | |
14244 | T(V8), /* V6K. */ | |
14245 | T(V8), /* V7. */ | |
14246 | T(V8), /* V6_M. */ | |
14247 | T(V8), /* V6S_M. */ | |
14248 | T(V8), /* V7E_M. */ | |
14249 | T(V8) /* V8. */ | |
14250 | }; | |
bff0500d TP |
14251 | const int v8r[] = |
14252 | { | |
14253 | T(V8R), /* PRE_V4. */ | |
14254 | T(V8R), /* V4. */ | |
14255 | T(V8R), /* V4T. */ | |
14256 | T(V8R), /* V5T. */ | |
14257 | T(V8R), /* V5TE. */ | |
14258 | T(V8R), /* V5TEJ. */ | |
14259 | T(V8R), /* V6. */ | |
14260 | T(V8R), /* V6KZ. */ | |
14261 | T(V8R), /* V6T2. */ | |
14262 | T(V8R), /* V6K. */ | |
14263 | T(V8R), /* V7. */ | |
14264 | T(V8R), /* V6_M. */ | |
14265 | T(V8R), /* V6S_M. */ | |
14266 | T(V8R), /* V7E_M. */ | |
14267 | T(V8), /* V8. */ | |
14268 | T(V8R), /* V8R. */ | |
14269 | }; | |
2fd158eb TP |
14270 | const int v8m_baseline[] = |
14271 | { | |
14272 | -1, /* PRE_V4. */ | |
14273 | -1, /* V4. */ | |
14274 | -1, /* V4T. */ | |
14275 | -1, /* V5T. */ | |
14276 | -1, /* V5TE. */ | |
14277 | -1, /* V5TEJ. */ | |
14278 | -1, /* V6. */ | |
14279 | -1, /* V6KZ. */ | |
14280 | -1, /* V6T2. */ | |
14281 | -1, /* V6K. */ | |
14282 | -1, /* V7. */ | |
14283 | T(V8M_BASE), /* V6_M. */ | |
14284 | T(V8M_BASE), /* V6S_M. */ | |
14285 | -1, /* V7E_M. */ | |
14286 | -1, /* V8. */ | |
bff0500d | 14287 | -1, /* V8R. */ |
2fd158eb TP |
14288 | T(V8M_BASE) /* V8-M BASELINE. */ |
14289 | }; | |
14290 | const int v8m_mainline[] = | |
14291 | { | |
14292 | -1, /* PRE_V4. */ | |
14293 | -1, /* V4. */ | |
14294 | -1, /* V4T. */ | |
14295 | -1, /* V5T. */ | |
14296 | -1, /* V5TE. */ | |
14297 | -1, /* V5TEJ. */ | |
14298 | -1, /* V6. */ | |
14299 | -1, /* V6KZ. */ | |
14300 | -1, /* V6T2. */ | |
14301 | -1, /* V6K. */ | |
14302 | T(V8M_MAIN), /* V7. */ | |
14303 | T(V8M_MAIN), /* V6_M. */ | |
14304 | T(V8M_MAIN), /* V6S_M. */ | |
14305 | T(V8M_MAIN), /* V7E_M. */ | |
14306 | -1, /* V8. */ | |
bff0500d | 14307 | -1, /* V8R. */ |
2fd158eb TP |
14308 | T(V8M_MAIN), /* V8-M BASELINE. */ |
14309 | T(V8M_MAIN) /* V8-M MAINLINE. */ | |
14310 | }; | |
031254f2 AV |
14311 | const int v8_1m_mainline[] = |
14312 | { | |
14313 | -1, /* PRE_V4. */ | |
14314 | -1, /* V4. */ | |
14315 | -1, /* V4T. */ | |
14316 | -1, /* V5T. */ | |
14317 | -1, /* V5TE. */ | |
14318 | -1, /* V5TEJ. */ | |
14319 | -1, /* V6. */ | |
14320 | -1, /* V6KZ. */ | |
14321 | -1, /* V6T2. */ | |
14322 | -1, /* V6K. */ | |
14323 | T(V8_1M_MAIN), /* V7. */ | |
14324 | T(V8_1M_MAIN), /* V6_M. */ | |
14325 | T(V8_1M_MAIN), /* V6S_M. */ | |
14326 | T(V8_1M_MAIN), /* V7E_M. */ | |
14327 | -1, /* V8. */ | |
14328 | -1, /* V8R. */ | |
14329 | T(V8_1M_MAIN), /* V8-M BASELINE. */ | |
14330 | T(V8_1M_MAIN), /* V8-M MAINLINE. */ | |
14331 | -1, /* Unused (18). */ | |
14332 | -1, /* Unused (19). */ | |
14333 | -1, /* Unused (20). */ | |
14334 | T(V8_1M_MAIN) /* V8.1-M MAINLINE. */ | |
14335 | }; | |
91e22acd AS |
14336 | const int v4t_plus_v6_m[] = |
14337 | { | |
14338 | -1, /* PRE_V4. */ | |
14339 | -1, /* V4. */ | |
14340 | T(V4T), /* V4T. */ | |
14341 | T(V5T), /* V5T. */ | |
14342 | T(V5TE), /* V5TE. */ | |
14343 | T(V5TEJ), /* V5TEJ. */ | |
14344 | T(V6), /* V6. */ | |
14345 | T(V6KZ), /* V6KZ. */ | |
14346 | T(V6T2), /* V6T2. */ | |
14347 | T(V6K), /* V6K. */ | |
14348 | T(V7), /* V7. */ | |
14349 | T(V6_M), /* V6_M. */ | |
14350 | T(V6S_M), /* V6S_M. */ | |
9e3c6df6 | 14351 | T(V7E_M), /* V7E_M. */ |
bca38921 | 14352 | T(V8), /* V8. */ |
bff0500d | 14353 | -1, /* V8R. */ |
2fd158eb TP |
14354 | T(V8M_BASE), /* V8-M BASELINE. */ |
14355 | T(V8M_MAIN), /* V8-M MAINLINE. */ | |
031254f2 AV |
14356 | -1, /* Unused (18). */ |
14357 | -1, /* Unused (19). */ | |
14358 | -1, /* Unused (20). */ | |
14359 | T(V8_1M_MAIN), /* V8.1-M MAINLINE. */ | |
91e22acd AS |
14360 | T(V4T_PLUS_V6_M) /* V4T plus V6_M. */ |
14361 | }; | |
14362 | const int *comb[] = | |
14363 | { | |
14364 | v6t2, | |
14365 | v6k, | |
14366 | v7, | |
14367 | v6_m, | |
14368 | v6s_m, | |
9e3c6df6 | 14369 | v7e_m, |
bca38921 | 14370 | v8, |
bff0500d | 14371 | v8r, |
2fd158eb TP |
14372 | v8m_baseline, |
14373 | v8m_mainline, | |
031254f2 AV |
14374 | NULL, |
14375 | NULL, | |
14376 | NULL, | |
14377 | v8_1m_mainline, | |
91e22acd AS |
14378 | /* Pseudo-architecture. */ |
14379 | v4t_plus_v6_m | |
14380 | }; | |
14381 | ||
14382 | /* Check we've not got a higher architecture than we know about. */ | |
14383 | ||
9e3c6df6 | 14384 | if (oldtag > MAX_TAG_CPU_ARCH || newtag > MAX_TAG_CPU_ARCH) |
91e22acd | 14385 | { |
90b6238f | 14386 | _bfd_error_handler (_("error: %pB: unknown CPU architecture"), ibfd); |
91e22acd AS |
14387 | return -1; |
14388 | } | |
14389 | ||
14390 | /* Override old tag if we have a Tag_also_compatible_with on the output. */ | |
14391 | ||
14392 | if ((oldtag == T(V6_M) && *secondary_compat_out == T(V4T)) | |
14393 | || (oldtag == T(V4T) && *secondary_compat_out == T(V6_M))) | |
14394 | oldtag = T(V4T_PLUS_V6_M); | |
14395 | ||
14396 | /* And override the new tag if we have a Tag_also_compatible_with on the | |
14397 | input. */ | |
14398 | ||
14399 | if ((newtag == T(V6_M) && secondary_compat == T(V4T)) | |
14400 | || (newtag == T(V4T) && secondary_compat == T(V6_M))) | |
14401 | newtag = T(V4T_PLUS_V6_M); | |
14402 | ||
14403 | tagl = (oldtag < newtag) ? oldtag : newtag; | |
14404 | result = tagh = (oldtag > newtag) ? oldtag : newtag; | |
14405 | ||
14406 | /* Architectures before V6KZ add features monotonically. */ | |
14407 | if (tagh <= TAG_CPU_ARCH_V6KZ) | |
14408 | return result; | |
14409 | ||
4ed7ed8d | 14410 | result = comb[tagh - T(V6T2)] ? comb[tagh - T(V6T2)][tagl] : -1; |
91e22acd AS |
14411 | |
14412 | /* Use Tag_CPU_arch == V4T and Tag_also_compatible_with (Tag_CPU_arch V6_M) | |
14413 | as the canonical version. */ | |
14414 | if (result == T(V4T_PLUS_V6_M)) | |
14415 | { | |
14416 | result = T(V4T); | |
14417 | *secondary_compat_out = T(V6_M); | |
14418 | } | |
14419 | else | |
14420 | *secondary_compat_out = -1; | |
14421 | ||
14422 | if (result == -1) | |
14423 | { | |
90b6238f | 14424 | _bfd_error_handler (_("error: %pB: conflicting CPU architectures %d/%d"), |
91e22acd AS |
14425 | ibfd, oldtag, newtag); |
14426 | return -1; | |
14427 | } | |
14428 | ||
14429 | return result; | |
14430 | #undef T | |
8e79c3df CM |
14431 | } |
14432 | ||
ac56ee8f MGD |
14433 | /* Query attributes object to see if integer divide instructions may be |
14434 | present in an object. */ | |
14435 | static bfd_boolean | |
14436 | elf32_arm_attributes_accept_div (const obj_attribute *attr) | |
14437 | { | |
14438 | int arch = attr[Tag_CPU_arch].i; | |
14439 | int profile = attr[Tag_CPU_arch_profile].i; | |
14440 | ||
14441 | switch (attr[Tag_DIV_use].i) | |
14442 | { | |
14443 | case 0: | |
14444 | /* Integer divide allowed if instruction contained in archetecture. */ | |
14445 | if (arch == TAG_CPU_ARCH_V7 && (profile == 'R' || profile == 'M')) | |
14446 | return TRUE; | |
14447 | else if (arch >= TAG_CPU_ARCH_V7E_M) | |
14448 | return TRUE; | |
14449 | else | |
14450 | return FALSE; | |
14451 | ||
14452 | case 1: | |
14453 | /* Integer divide explicitly prohibited. */ | |
14454 | return FALSE; | |
14455 | ||
14456 | default: | |
14457 | /* Unrecognised case - treat as allowing divide everywhere. */ | |
14458 | case 2: | |
14459 | /* Integer divide allowed in ARM state. */ | |
14460 | return TRUE; | |
14461 | } | |
14462 | } | |
14463 | ||
14464 | /* Query attributes object to see if integer divide instructions are | |
14465 | forbidden to be in the object. This is not the inverse of | |
14466 | elf32_arm_attributes_accept_div. */ | |
14467 | static bfd_boolean | |
14468 | elf32_arm_attributes_forbid_div (const obj_attribute *attr) | |
14469 | { | |
14470 | return attr[Tag_DIV_use].i == 1; | |
14471 | } | |
14472 | ||
ee065d83 PB |
14473 | /* Merge EABI object attributes from IBFD into OBFD. Raise an error if there |
14474 | are conflicting attributes. */ | |
906e58ca | 14475 | |
ee065d83 | 14476 | static bfd_boolean |
50e03d47 | 14477 | elf32_arm_merge_eabi_attributes (bfd *ibfd, struct bfd_link_info *info) |
ee065d83 | 14478 | { |
50e03d47 | 14479 | bfd *obfd = info->output_bfd; |
104d59d1 JM |
14480 | obj_attribute *in_attr; |
14481 | obj_attribute *out_attr; | |
ee065d83 PB |
14482 | /* Some tags have 0 = don't care, 1 = strong requirement, |
14483 | 2 = weak requirement. */ | |
91e22acd | 14484 | static const int order_021[3] = {0, 2, 1}; |
ee065d83 | 14485 | int i; |
91e22acd | 14486 | bfd_boolean result = TRUE; |
9274e9de | 14487 | const char *sec_name = get_elf_backend_data (ibfd)->obj_attrs_section; |
ee065d83 | 14488 | |
3e6b1042 DJ |
14489 | /* Skip the linker stubs file. This preserves previous behavior |
14490 | of accepting unknown attributes in the first input file - but | |
14491 | is that a bug? */ | |
14492 | if (ibfd->flags & BFD_LINKER_CREATED) | |
14493 | return TRUE; | |
14494 | ||
9274e9de TG |
14495 | /* Skip any input that hasn't attribute section. |
14496 | This enables to link object files without attribute section with | |
14497 | any others. */ | |
14498 | if (bfd_get_section_by_name (ibfd, sec_name) == NULL) | |
14499 | return TRUE; | |
14500 | ||
104d59d1 | 14501 | if (!elf_known_obj_attributes_proc (obfd)[0].i) |
ee065d83 PB |
14502 | { |
14503 | /* This is the first object. Copy the attributes. */ | |
104d59d1 | 14504 | _bfd_elf_copy_obj_attributes (ibfd, obfd); |
004ae526 | 14505 | |
cd21e546 MGD |
14506 | out_attr = elf_known_obj_attributes_proc (obfd); |
14507 | ||
004ae526 PB |
14508 | /* Use the Tag_null value to indicate the attributes have been |
14509 | initialized. */ | |
cd21e546 | 14510 | out_attr[0].i = 1; |
004ae526 | 14511 | |
cd21e546 MGD |
14512 | /* We do not output objects with Tag_MPextension_use_legacy - we move |
14513 | the attribute's value to Tag_MPextension_use. */ | |
14514 | if (out_attr[Tag_MPextension_use_legacy].i != 0) | |
14515 | { | |
14516 | if (out_attr[Tag_MPextension_use].i != 0 | |
14517 | && out_attr[Tag_MPextension_use_legacy].i | |
99059e56 | 14518 | != out_attr[Tag_MPextension_use].i) |
cd21e546 MGD |
14519 | { |
14520 | _bfd_error_handler | |
871b3ab2 | 14521 | (_("Error: %pB has both the current and legacy " |
cd21e546 MGD |
14522 | "Tag_MPextension_use attributes"), ibfd); |
14523 | result = FALSE; | |
14524 | } | |
14525 | ||
14526 | out_attr[Tag_MPextension_use] = | |
14527 | out_attr[Tag_MPextension_use_legacy]; | |
14528 | out_attr[Tag_MPextension_use_legacy].type = 0; | |
14529 | out_attr[Tag_MPextension_use_legacy].i = 0; | |
14530 | } | |
14531 | ||
14532 | return result; | |
ee065d83 PB |
14533 | } |
14534 | ||
104d59d1 JM |
14535 | in_attr = elf_known_obj_attributes_proc (ibfd); |
14536 | out_attr = elf_known_obj_attributes_proc (obfd); | |
ee065d83 PB |
14537 | /* This needs to happen before Tag_ABI_FP_number_model is merged. */ |
14538 | if (in_attr[Tag_ABI_VFP_args].i != out_attr[Tag_ABI_VFP_args].i) | |
14539 | { | |
5c294fee TG |
14540 | /* Ignore mismatches if the object doesn't use floating point or is |
14541 | floating point ABI independent. */ | |
14542 | if (out_attr[Tag_ABI_FP_number_model].i == AEABI_FP_number_model_none | |
14543 | || (in_attr[Tag_ABI_FP_number_model].i != AEABI_FP_number_model_none | |
14544 | && out_attr[Tag_ABI_VFP_args].i == AEABI_VFP_args_compatible)) | |
ee065d83 | 14545 | out_attr[Tag_ABI_VFP_args].i = in_attr[Tag_ABI_VFP_args].i; |
5c294fee TG |
14546 | else if (in_attr[Tag_ABI_FP_number_model].i != AEABI_FP_number_model_none |
14547 | && in_attr[Tag_ABI_VFP_args].i != AEABI_VFP_args_compatible) | |
ee065d83 PB |
14548 | { |
14549 | _bfd_error_handler | |
871b3ab2 | 14550 | (_("error: %pB uses VFP register arguments, %pB does not"), |
deddc40b NS |
14551 | in_attr[Tag_ABI_VFP_args].i ? ibfd : obfd, |
14552 | in_attr[Tag_ABI_VFP_args].i ? obfd : ibfd); | |
91e22acd | 14553 | result = FALSE; |
ee065d83 PB |
14554 | } |
14555 | } | |
14556 | ||
3de4a297 | 14557 | for (i = LEAST_KNOWN_OBJ_ATTRIBUTE; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++) |
ee065d83 PB |
14558 | { |
14559 | /* Merge this attribute with existing attributes. */ | |
14560 | switch (i) | |
14561 | { | |
14562 | case Tag_CPU_raw_name: | |
14563 | case Tag_CPU_name: | |
6a631e86 | 14564 | /* These are merged after Tag_CPU_arch. */ |
ee065d83 PB |
14565 | break; |
14566 | ||
14567 | case Tag_ABI_optimization_goals: | |
14568 | case Tag_ABI_FP_optimization_goals: | |
14569 | /* Use the first value seen. */ | |
14570 | break; | |
14571 | ||
14572 | case Tag_CPU_arch: | |
91e22acd AS |
14573 | { |
14574 | int secondary_compat = -1, secondary_compat_out = -1; | |
14575 | unsigned int saved_out_attr = out_attr[i].i; | |
70e99720 TG |
14576 | int arch_attr; |
14577 | static const char *name_table[] = | |
14578 | { | |
91e22acd AS |
14579 | /* These aren't real CPU names, but we can't guess |
14580 | that from the architecture version alone. */ | |
14581 | "Pre v4", | |
14582 | "ARM v4", | |
14583 | "ARM v4T", | |
14584 | "ARM v5T", | |
14585 | "ARM v5TE", | |
14586 | "ARM v5TEJ", | |
14587 | "ARM v6", | |
14588 | "ARM v6KZ", | |
14589 | "ARM v6T2", | |
14590 | "ARM v6K", | |
14591 | "ARM v7", | |
14592 | "ARM v6-M", | |
bca38921 | 14593 | "ARM v6S-M", |
2fd158eb TP |
14594 | "ARM v8", |
14595 | "", | |
14596 | "ARM v8-M.baseline", | |
14597 | "ARM v8-M.mainline", | |
91e22acd AS |
14598 | }; |
14599 | ||
14600 | /* Merge Tag_CPU_arch and Tag_also_compatible_with. */ | |
14601 | secondary_compat = get_secondary_compatible_arch (ibfd); | |
14602 | secondary_compat_out = get_secondary_compatible_arch (obfd); | |
70e99720 TG |
14603 | arch_attr = tag_cpu_arch_combine (ibfd, out_attr[i].i, |
14604 | &secondary_compat_out, | |
14605 | in_attr[i].i, | |
14606 | secondary_compat); | |
14607 | ||
14608 | /* Return with error if failed to merge. */ | |
14609 | if (arch_attr == -1) | |
14610 | return FALSE; | |
14611 | ||
14612 | out_attr[i].i = arch_attr; | |
14613 | ||
91e22acd AS |
14614 | set_secondary_compatible_arch (obfd, secondary_compat_out); |
14615 | ||
14616 | /* Merge Tag_CPU_name and Tag_CPU_raw_name. */ | |
14617 | if (out_attr[i].i == saved_out_attr) | |
14618 | ; /* Leave the names alone. */ | |
14619 | else if (out_attr[i].i == in_attr[i].i) | |
14620 | { | |
14621 | /* The output architecture has been changed to match the | |
14622 | input architecture. Use the input names. */ | |
14623 | out_attr[Tag_CPU_name].s = in_attr[Tag_CPU_name].s | |
14624 | ? _bfd_elf_attr_strdup (obfd, in_attr[Tag_CPU_name].s) | |
14625 | : NULL; | |
14626 | out_attr[Tag_CPU_raw_name].s = in_attr[Tag_CPU_raw_name].s | |
14627 | ? _bfd_elf_attr_strdup (obfd, in_attr[Tag_CPU_raw_name].s) | |
14628 | : NULL; | |
14629 | } | |
14630 | else | |
14631 | { | |
14632 | out_attr[Tag_CPU_name].s = NULL; | |
14633 | out_attr[Tag_CPU_raw_name].s = NULL; | |
14634 | } | |
14635 | ||
14636 | /* If we still don't have a value for Tag_CPU_name, | |
14637 | make one up now. Tag_CPU_raw_name remains blank. */ | |
14638 | if (out_attr[Tag_CPU_name].s == NULL | |
14639 | && out_attr[i].i < ARRAY_SIZE (name_table)) | |
14640 | out_attr[Tag_CPU_name].s = | |
14641 | _bfd_elf_attr_strdup (obfd, name_table[out_attr[i].i]); | |
14642 | } | |
14643 | break; | |
14644 | ||
ee065d83 PB |
14645 | case Tag_ARM_ISA_use: |
14646 | case Tag_THUMB_ISA_use: | |
ee065d83 | 14647 | case Tag_WMMX_arch: |
91e22acd AS |
14648 | case Tag_Advanced_SIMD_arch: |
14649 | /* ??? Do Advanced_SIMD (NEON) and WMMX conflict? */ | |
ee065d83 | 14650 | case Tag_ABI_FP_rounding: |
ee065d83 PB |
14651 | case Tag_ABI_FP_exceptions: |
14652 | case Tag_ABI_FP_user_exceptions: | |
14653 | case Tag_ABI_FP_number_model: | |
75375b3e | 14654 | case Tag_FP_HP_extension: |
91e22acd AS |
14655 | case Tag_CPU_unaligned_access: |
14656 | case Tag_T2EE_use: | |
91e22acd | 14657 | case Tag_MPextension_use: |
ee065d83 PB |
14658 | /* Use the largest value specified. */ |
14659 | if (in_attr[i].i > out_attr[i].i) | |
14660 | out_attr[i].i = in_attr[i].i; | |
14661 | break; | |
14662 | ||
75375b3e | 14663 | case Tag_ABI_align_preserved: |
91e22acd AS |
14664 | case Tag_ABI_PCS_RO_data: |
14665 | /* Use the smallest value specified. */ | |
14666 | if (in_attr[i].i < out_attr[i].i) | |
14667 | out_attr[i].i = in_attr[i].i; | |
14668 | break; | |
14669 | ||
75375b3e | 14670 | case Tag_ABI_align_needed: |
91e22acd | 14671 | if ((in_attr[i].i > 0 || out_attr[i].i > 0) |
75375b3e MGD |
14672 | && (in_attr[Tag_ABI_align_preserved].i == 0 |
14673 | || out_attr[Tag_ABI_align_preserved].i == 0)) | |
ee065d83 | 14674 | { |
91e22acd AS |
14675 | /* This error message should be enabled once all non-conformant |
14676 | binaries in the toolchain have had the attributes set | |
14677 | properly. | |
ee065d83 | 14678 | _bfd_error_handler |
871b3ab2 | 14679 | (_("error: %pB: 8-byte data alignment conflicts with %pB"), |
91e22acd AS |
14680 | obfd, ibfd); |
14681 | result = FALSE; */ | |
ee065d83 | 14682 | } |
91e22acd AS |
14683 | /* Fall through. */ |
14684 | case Tag_ABI_FP_denormal: | |
14685 | case Tag_ABI_PCS_GOT_use: | |
14686 | /* Use the "greatest" from the sequence 0, 2, 1, or the largest | |
14687 | value if greater than 2 (for future-proofing). */ | |
14688 | if ((in_attr[i].i > 2 && in_attr[i].i > out_attr[i].i) | |
14689 | || (in_attr[i].i <= 2 && out_attr[i].i <= 2 | |
14690 | && order_021[in_attr[i].i] > order_021[out_attr[i].i])) | |
ee065d83 PB |
14691 | out_attr[i].i = in_attr[i].i; |
14692 | break; | |
91e22acd | 14693 | |
75375b3e MGD |
14694 | case Tag_Virtualization_use: |
14695 | /* The virtualization tag effectively stores two bits of | |
14696 | information: the intended use of TrustZone (in bit 0), and the | |
14697 | intended use of Virtualization (in bit 1). */ | |
14698 | if (out_attr[i].i == 0) | |
14699 | out_attr[i].i = in_attr[i].i; | |
14700 | else if (in_attr[i].i != 0 | |
14701 | && in_attr[i].i != out_attr[i].i) | |
14702 | { | |
14703 | if (in_attr[i].i <= 3 && out_attr[i].i <= 3) | |
14704 | out_attr[i].i = 3; | |
14705 | else | |
14706 | { | |
14707 | _bfd_error_handler | |
871b3ab2 AM |
14708 | (_("error: %pB: unable to merge virtualization attributes " |
14709 | "with %pB"), | |
75375b3e MGD |
14710 | obfd, ibfd); |
14711 | result = FALSE; | |
14712 | } | |
14713 | } | |
14714 | break; | |
91e22acd AS |
14715 | |
14716 | case Tag_CPU_arch_profile: | |
14717 | if (out_attr[i].i != in_attr[i].i) | |
14718 | { | |
14719 | /* 0 will merge with anything. | |
14720 | 'A' and 'S' merge to 'A'. | |
14721 | 'R' and 'S' merge to 'R'. | |
99059e56 | 14722 | 'M' and 'A|R|S' is an error. */ |
91e22acd AS |
14723 | if (out_attr[i].i == 0 |
14724 | || (out_attr[i].i == 'S' | |
14725 | && (in_attr[i].i == 'A' || in_attr[i].i == 'R'))) | |
14726 | out_attr[i].i = in_attr[i].i; | |
14727 | else if (in_attr[i].i == 0 | |
14728 | || (in_attr[i].i == 'S' | |
14729 | && (out_attr[i].i == 'A' || out_attr[i].i == 'R'))) | |
6a631e86 | 14730 | ; /* Do nothing. */ |
91e22acd AS |
14731 | else |
14732 | { | |
14733 | _bfd_error_handler | |
90b6238f | 14734 | (_("error: %pB: conflicting architecture profiles %c/%c"), |
91e22acd AS |
14735 | ibfd, |
14736 | in_attr[i].i ? in_attr[i].i : '0', | |
14737 | out_attr[i].i ? out_attr[i].i : '0'); | |
14738 | result = FALSE; | |
14739 | } | |
14740 | } | |
14741 | break; | |
15afaa63 TP |
14742 | |
14743 | case Tag_DSP_extension: | |
14744 | /* No need to change output value if any of: | |
14745 | - pre (<=) ARMv5T input architecture (do not have DSP) | |
14746 | - M input profile not ARMv7E-M and do not have DSP. */ | |
14747 | if (in_attr[Tag_CPU_arch].i <= 3 | |
14748 | || (in_attr[Tag_CPU_arch_profile].i == 'M' | |
14749 | && in_attr[Tag_CPU_arch].i != 13 | |
14750 | && in_attr[i].i == 0)) | |
14751 | ; /* Do nothing. */ | |
14752 | /* Output value should be 0 if DSP part of architecture, ie. | |
14753 | - post (>=) ARMv5te architecture output | |
14754 | - A, R or S profile output or ARMv7E-M output architecture. */ | |
14755 | else if (out_attr[Tag_CPU_arch].i >= 4 | |
14756 | && (out_attr[Tag_CPU_arch_profile].i == 'A' | |
14757 | || out_attr[Tag_CPU_arch_profile].i == 'R' | |
14758 | || out_attr[Tag_CPU_arch_profile].i == 'S' | |
14759 | || out_attr[Tag_CPU_arch].i == 13)) | |
14760 | out_attr[i].i = 0; | |
14761 | /* Otherwise, DSP instructions are added and not part of output | |
14762 | architecture. */ | |
14763 | else | |
14764 | out_attr[i].i = 1; | |
14765 | break; | |
14766 | ||
75375b3e | 14767 | case Tag_FP_arch: |
62f3b8c8 | 14768 | { |
4547cb56 NC |
14769 | /* Tag_ABI_HardFP_use is handled along with Tag_FP_arch since |
14770 | the meaning of Tag_ABI_HardFP_use depends on Tag_FP_arch | |
14771 | when it's 0. It might mean absence of FP hardware if | |
99654aaf | 14772 | Tag_FP_arch is zero. */ |
4547cb56 | 14773 | |
a715796b | 14774 | #define VFP_VERSION_COUNT 9 |
62f3b8c8 PB |
14775 | static const struct |
14776 | { | |
14777 | int ver; | |
14778 | int regs; | |
bca38921 | 14779 | } vfp_versions[VFP_VERSION_COUNT] = |
62f3b8c8 PB |
14780 | { |
14781 | {0, 0}, | |
14782 | {1, 16}, | |
14783 | {2, 16}, | |
14784 | {3, 32}, | |
14785 | {3, 16}, | |
14786 | {4, 32}, | |
bca38921 | 14787 | {4, 16}, |
a715796b TG |
14788 | {8, 32}, |
14789 | {8, 16} | |
62f3b8c8 PB |
14790 | }; |
14791 | int ver; | |
14792 | int regs; | |
14793 | int newval; | |
14794 | ||
4547cb56 NC |
14795 | /* If the output has no requirement about FP hardware, |
14796 | follow the requirement of the input. */ | |
14797 | if (out_attr[i].i == 0) | |
14798 | { | |
4ec192e6 RE |
14799 | /* This assert is still reasonable, we shouldn't |
14800 | produce the suspicious build attribute | |
14801 | combination (See below for in_attr). */ | |
4547cb56 NC |
14802 | BFD_ASSERT (out_attr[Tag_ABI_HardFP_use].i == 0); |
14803 | out_attr[i].i = in_attr[i].i; | |
14804 | out_attr[Tag_ABI_HardFP_use].i | |
14805 | = in_attr[Tag_ABI_HardFP_use].i; | |
14806 | break; | |
14807 | } | |
14808 | /* If the input has no requirement about FP hardware, do | |
14809 | nothing. */ | |
14810 | else if (in_attr[i].i == 0) | |
14811 | { | |
4ec192e6 RE |
14812 | /* We used to assert that Tag_ABI_HardFP_use was |
14813 | zero here, but we should never assert when | |
14814 | consuming an object file that has suspicious | |
14815 | build attributes. The single precision variant | |
14816 | of 'no FP architecture' is still 'no FP | |
14817 | architecture', so we just ignore the tag in this | |
14818 | case. */ | |
4547cb56 NC |
14819 | break; |
14820 | } | |
14821 | ||
14822 | /* Both the input and the output have nonzero Tag_FP_arch. | |
99654aaf | 14823 | So Tag_ABI_HardFP_use is implied by Tag_FP_arch when it's zero. */ |
4547cb56 NC |
14824 | |
14825 | /* If both the input and the output have zero Tag_ABI_HardFP_use, | |
14826 | do nothing. */ | |
14827 | if (in_attr[Tag_ABI_HardFP_use].i == 0 | |
14828 | && out_attr[Tag_ABI_HardFP_use].i == 0) | |
14829 | ; | |
14830 | /* If the input and the output have different Tag_ABI_HardFP_use, | |
99654aaf | 14831 | the combination of them is 0 (implied by Tag_FP_arch). */ |
4547cb56 NC |
14832 | else if (in_attr[Tag_ABI_HardFP_use].i |
14833 | != out_attr[Tag_ABI_HardFP_use].i) | |
99654aaf | 14834 | out_attr[Tag_ABI_HardFP_use].i = 0; |
4547cb56 NC |
14835 | |
14836 | /* Now we can handle Tag_FP_arch. */ | |
14837 | ||
bca38921 MGD |
14838 | /* Values of VFP_VERSION_COUNT or more aren't defined, so just |
14839 | pick the biggest. */ | |
14840 | if (in_attr[i].i >= VFP_VERSION_COUNT | |
14841 | && in_attr[i].i > out_attr[i].i) | |
62f3b8c8 PB |
14842 | { |
14843 | out_attr[i] = in_attr[i]; | |
14844 | break; | |
14845 | } | |
14846 | /* The output uses the superset of input features | |
14847 | (ISA version) and registers. */ | |
14848 | ver = vfp_versions[in_attr[i].i].ver; | |
14849 | if (ver < vfp_versions[out_attr[i].i].ver) | |
14850 | ver = vfp_versions[out_attr[i].i].ver; | |
14851 | regs = vfp_versions[in_attr[i].i].regs; | |
14852 | if (regs < vfp_versions[out_attr[i].i].regs) | |
14853 | regs = vfp_versions[out_attr[i].i].regs; | |
14854 | /* This assumes all possible supersets are also a valid | |
99059e56 | 14855 | options. */ |
bca38921 | 14856 | for (newval = VFP_VERSION_COUNT - 1; newval > 0; newval--) |
62f3b8c8 PB |
14857 | { |
14858 | if (regs == vfp_versions[newval].regs | |
14859 | && ver == vfp_versions[newval].ver) | |
14860 | break; | |
14861 | } | |
14862 | out_attr[i].i = newval; | |
14863 | } | |
b1cc4aeb | 14864 | break; |
ee065d83 PB |
14865 | case Tag_PCS_config: |
14866 | if (out_attr[i].i == 0) | |
14867 | out_attr[i].i = in_attr[i].i; | |
b6009aca | 14868 | else if (in_attr[i].i != 0 && out_attr[i].i != in_attr[i].i) |
ee065d83 PB |
14869 | { |
14870 | /* It's sometimes ok to mix different configs, so this is only | |
99059e56 | 14871 | a warning. */ |
ee065d83 | 14872 | _bfd_error_handler |
90b6238f | 14873 | (_("warning: %pB: conflicting platform configuration"), ibfd); |
ee065d83 PB |
14874 | } |
14875 | break; | |
14876 | case Tag_ABI_PCS_R9_use: | |
004ae526 PB |
14877 | if (in_attr[i].i != out_attr[i].i |
14878 | && out_attr[i].i != AEABI_R9_unused | |
ee065d83 PB |
14879 | && in_attr[i].i != AEABI_R9_unused) |
14880 | { | |
14881 | _bfd_error_handler | |
90b6238f | 14882 | (_("error: %pB: conflicting use of R9"), ibfd); |
91e22acd | 14883 | result = FALSE; |
ee065d83 PB |
14884 | } |
14885 | if (out_attr[i].i == AEABI_R9_unused) | |
14886 | out_attr[i].i = in_attr[i].i; | |
14887 | break; | |
14888 | case Tag_ABI_PCS_RW_data: | |
14889 | if (in_attr[i].i == AEABI_PCS_RW_data_SBrel | |
14890 | && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_SB | |
14891 | && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_unused) | |
14892 | { | |
14893 | _bfd_error_handler | |
871b3ab2 | 14894 | (_("error: %pB: SB relative addressing conflicts with use of R9"), |
ee065d83 | 14895 | ibfd); |
91e22acd | 14896 | result = FALSE; |
ee065d83 PB |
14897 | } |
14898 | /* Use the smallest value specified. */ | |
14899 | if (in_attr[i].i < out_attr[i].i) | |
14900 | out_attr[i].i = in_attr[i].i; | |
14901 | break; | |
ee065d83 | 14902 | case Tag_ABI_PCS_wchar_t: |
a9dc9481 JM |
14903 | if (out_attr[i].i && in_attr[i].i && out_attr[i].i != in_attr[i].i |
14904 | && !elf_arm_tdata (obfd)->no_wchar_size_warning) | |
ee065d83 PB |
14905 | { |
14906 | _bfd_error_handler | |
871b3ab2 | 14907 | (_("warning: %pB uses %u-byte wchar_t yet the output is to use %u-byte wchar_t; use of wchar_t values across objects may fail"), |
a9dc9481 | 14908 | ibfd, in_attr[i].i, out_attr[i].i); |
ee065d83 | 14909 | } |
a9dc9481 | 14910 | else if (in_attr[i].i && !out_attr[i].i) |
ee065d83 PB |
14911 | out_attr[i].i = in_attr[i].i; |
14912 | break; | |
ee065d83 PB |
14913 | case Tag_ABI_enum_size: |
14914 | if (in_attr[i].i != AEABI_enum_unused) | |
14915 | { | |
14916 | if (out_attr[i].i == AEABI_enum_unused | |
14917 | || out_attr[i].i == AEABI_enum_forced_wide) | |
14918 | { | |
14919 | /* The existing object is compatible with anything. | |
14920 | Use whatever requirements the new object has. */ | |
14921 | out_attr[i].i = in_attr[i].i; | |
14922 | } | |
14923 | else if (in_attr[i].i != AEABI_enum_forced_wide | |
bf21ed78 | 14924 | && out_attr[i].i != in_attr[i].i |
0ffa91dd | 14925 | && !elf_arm_tdata (obfd)->no_enum_size_warning) |
ee065d83 | 14926 | { |
91e22acd | 14927 | static const char *aeabi_enum_names[] = |
bf21ed78 | 14928 | { "", "variable-size", "32-bit", "" }; |
91e22acd AS |
14929 | const char *in_name = |
14930 | in_attr[i].i < ARRAY_SIZE(aeabi_enum_names) | |
14931 | ? aeabi_enum_names[in_attr[i].i] | |
14932 | : "<unknown>"; | |
14933 | const char *out_name = | |
14934 | out_attr[i].i < ARRAY_SIZE(aeabi_enum_names) | |
14935 | ? aeabi_enum_names[out_attr[i].i] | |
14936 | : "<unknown>"; | |
ee065d83 | 14937 | _bfd_error_handler |
871b3ab2 | 14938 | (_("warning: %pB uses %s enums yet the output is to use %s enums; use of enum values across objects may fail"), |
91e22acd | 14939 | ibfd, in_name, out_name); |
ee065d83 PB |
14940 | } |
14941 | } | |
14942 | break; | |
14943 | case Tag_ABI_VFP_args: | |
14944 | /* Aready done. */ | |
14945 | break; | |
14946 | case Tag_ABI_WMMX_args: | |
14947 | if (in_attr[i].i != out_attr[i].i) | |
14948 | { | |
14949 | _bfd_error_handler | |
871b3ab2 | 14950 | (_("error: %pB uses iWMMXt register arguments, %pB does not"), |
ee065d83 | 14951 | ibfd, obfd); |
91e22acd | 14952 | result = FALSE; |
ee065d83 PB |
14953 | } |
14954 | break; | |
7b86a9fa AS |
14955 | case Tag_compatibility: |
14956 | /* Merged in target-independent code. */ | |
14957 | break; | |
91e22acd | 14958 | case Tag_ABI_HardFP_use: |
4547cb56 | 14959 | /* This is handled along with Tag_FP_arch. */ |
91e22acd AS |
14960 | break; |
14961 | case Tag_ABI_FP_16bit_format: | |
14962 | if (in_attr[i].i != 0 && out_attr[i].i != 0) | |
14963 | { | |
14964 | if (in_attr[i].i != out_attr[i].i) | |
14965 | { | |
14966 | _bfd_error_handler | |
871b3ab2 | 14967 | (_("error: fp16 format mismatch between %pB and %pB"), |
91e22acd AS |
14968 | ibfd, obfd); |
14969 | result = FALSE; | |
14970 | } | |
14971 | } | |
14972 | if (in_attr[i].i != 0) | |
14973 | out_attr[i].i = in_attr[i].i; | |
14974 | break; | |
7b86a9fa | 14975 | |
cd21e546 | 14976 | case Tag_DIV_use: |
ac56ee8f MGD |
14977 | /* A value of zero on input means that the divide instruction may |
14978 | be used if available in the base architecture as specified via | |
14979 | Tag_CPU_arch and Tag_CPU_arch_profile. A value of 1 means that | |
14980 | the user did not want divide instructions. A value of 2 | |
14981 | explicitly means that divide instructions were allowed in ARM | |
14982 | and Thumb state. */ | |
14983 | if (in_attr[i].i == out_attr[i].i) | |
14984 | /* Do nothing. */ ; | |
14985 | else if (elf32_arm_attributes_forbid_div (in_attr) | |
14986 | && !elf32_arm_attributes_accept_div (out_attr)) | |
14987 | out_attr[i].i = 1; | |
14988 | else if (elf32_arm_attributes_forbid_div (out_attr) | |
14989 | && elf32_arm_attributes_accept_div (in_attr)) | |
14990 | out_attr[i].i = in_attr[i].i; | |
14991 | else if (in_attr[i].i == 2) | |
14992 | out_attr[i].i = in_attr[i].i; | |
cd21e546 MGD |
14993 | break; |
14994 | ||
14995 | case Tag_MPextension_use_legacy: | |
14996 | /* We don't output objects with Tag_MPextension_use_legacy - we | |
14997 | move the value to Tag_MPextension_use. */ | |
14998 | if (in_attr[i].i != 0 && in_attr[Tag_MPextension_use].i != 0) | |
14999 | { | |
15000 | if (in_attr[Tag_MPextension_use].i != in_attr[i].i) | |
15001 | { | |
15002 | _bfd_error_handler | |
871b3ab2 | 15003 | (_("%pB has both the current and legacy " |
b38cadfb | 15004 | "Tag_MPextension_use attributes"), |
cd21e546 MGD |
15005 | ibfd); |
15006 | result = FALSE; | |
15007 | } | |
15008 | } | |
15009 | ||
15010 | if (in_attr[i].i > out_attr[Tag_MPextension_use].i) | |
15011 | out_attr[Tag_MPextension_use] = in_attr[i]; | |
15012 | ||
15013 | break; | |
15014 | ||
91e22acd | 15015 | case Tag_nodefaults: |
2d0bb761 AS |
15016 | /* This tag is set if it exists, but the value is unused (and is |
15017 | typically zero). We don't actually need to do anything here - | |
15018 | the merge happens automatically when the type flags are merged | |
15019 | below. */ | |
91e22acd AS |
15020 | break; |
15021 | case Tag_also_compatible_with: | |
15022 | /* Already done in Tag_CPU_arch. */ | |
15023 | break; | |
15024 | case Tag_conformance: | |
15025 | /* Keep the attribute if it matches. Throw it away otherwise. | |
15026 | No attribute means no claim to conform. */ | |
15027 | if (!in_attr[i].s || !out_attr[i].s | |
15028 | || strcmp (in_attr[i].s, out_attr[i].s) != 0) | |
15029 | out_attr[i].s = NULL; | |
15030 | break; | |
3cfad14c | 15031 | |
91e22acd | 15032 | default: |
e8b36cd1 JM |
15033 | result |
15034 | = result && _bfd_elf_merge_unknown_attribute_low (ibfd, obfd, i); | |
91e22acd AS |
15035 | } |
15036 | ||
15037 | /* If out_attr was copied from in_attr then it won't have a type yet. */ | |
15038 | if (in_attr[i].type && !out_attr[i].type) | |
15039 | out_attr[i].type = in_attr[i].type; | |
ee065d83 PB |
15040 | } |
15041 | ||
104d59d1 | 15042 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
50e03d47 | 15043 | if (!_bfd_elf_merge_object_attributes (ibfd, info)) |
5488d830 | 15044 | return FALSE; |
ee065d83 | 15045 | |
104d59d1 | 15046 | /* Check for any attributes not known on ARM. */ |
e8b36cd1 | 15047 | result &= _bfd_elf_merge_unknown_attribute_list (ibfd, obfd); |
91e22acd | 15048 | |
91e22acd | 15049 | return result; |
252b5132 RH |
15050 | } |
15051 | ||
3a4a14e9 PB |
15052 | |
15053 | /* Return TRUE if the two EABI versions are incompatible. */ | |
15054 | ||
15055 | static bfd_boolean | |
15056 | elf32_arm_versions_compatible (unsigned iver, unsigned over) | |
15057 | { | |
15058 | /* v4 and v5 are the same spec before and after it was released, | |
15059 | so allow mixing them. */ | |
15060 | if ((iver == EF_ARM_EABI_VER4 && over == EF_ARM_EABI_VER5) | |
15061 | || (iver == EF_ARM_EABI_VER5 && over == EF_ARM_EABI_VER4)) | |
15062 | return TRUE; | |
15063 | ||
15064 | return (iver == over); | |
15065 | } | |
15066 | ||
252b5132 RH |
15067 | /* Merge backend specific data from an object file to the output |
15068 | object file when linking. */ | |
9b485d32 | 15069 | |
b34976b6 | 15070 | static bfd_boolean |
50e03d47 | 15071 | elf32_arm_merge_private_bfd_data (bfd *, struct bfd_link_info *); |
252b5132 | 15072 | |
9b485d32 NC |
15073 | /* Display the flags field. */ |
15074 | ||
b34976b6 | 15075 | static bfd_boolean |
57e8b36a | 15076 | elf32_arm_print_private_bfd_data (bfd *abfd, void * ptr) |
252b5132 | 15077 | { |
fc830a83 NC |
15078 | FILE * file = (FILE *) ptr; |
15079 | unsigned long flags; | |
252b5132 RH |
15080 | |
15081 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
15082 | ||
15083 | /* Print normal ELF private data. */ | |
15084 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
15085 | ||
fc830a83 | 15086 | flags = elf_elfheader (abfd)->e_flags; |
9b485d32 NC |
15087 | /* Ignore init flag - it may not be set, despite the flags field |
15088 | containing valid data. */ | |
252b5132 | 15089 | |
9b485d32 | 15090 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); |
252b5132 | 15091 | |
fc830a83 NC |
15092 | switch (EF_ARM_EABI_VERSION (flags)) |
15093 | { | |
15094 | case EF_ARM_EABI_UNKNOWN: | |
4cc11e76 | 15095 | /* The following flag bits are GNU extensions and not part of the |
fc830a83 NC |
15096 | official ARM ELF extended ABI. Hence they are only decoded if |
15097 | the EABI version is not set. */ | |
fd2ec330 | 15098 | if (flags & EF_ARM_INTERWORK) |
9b485d32 | 15099 | fprintf (file, _(" [interworking enabled]")); |
9a5aca8c | 15100 | |
fd2ec330 | 15101 | if (flags & EF_ARM_APCS_26) |
6c571f00 | 15102 | fprintf (file, " [APCS-26]"); |
fc830a83 | 15103 | else |
6c571f00 | 15104 | fprintf (file, " [APCS-32]"); |
9a5aca8c | 15105 | |
96a846ea RE |
15106 | if (flags & EF_ARM_VFP_FLOAT) |
15107 | fprintf (file, _(" [VFP float format]")); | |
fde78edd NC |
15108 | else if (flags & EF_ARM_MAVERICK_FLOAT) |
15109 | fprintf (file, _(" [Maverick float format]")); | |
96a846ea RE |
15110 | else |
15111 | fprintf (file, _(" [FPA float format]")); | |
15112 | ||
fd2ec330 | 15113 | if (flags & EF_ARM_APCS_FLOAT) |
9b485d32 | 15114 | fprintf (file, _(" [floats passed in float registers]")); |
9a5aca8c | 15115 | |
fd2ec330 | 15116 | if (flags & EF_ARM_PIC) |
9b485d32 | 15117 | fprintf (file, _(" [position independent]")); |
fc830a83 | 15118 | |
fd2ec330 | 15119 | if (flags & EF_ARM_NEW_ABI) |
9b485d32 | 15120 | fprintf (file, _(" [new ABI]")); |
9a5aca8c | 15121 | |
fd2ec330 | 15122 | if (flags & EF_ARM_OLD_ABI) |
9b485d32 | 15123 | fprintf (file, _(" [old ABI]")); |
9a5aca8c | 15124 | |
fd2ec330 | 15125 | if (flags & EF_ARM_SOFT_FLOAT) |
9b485d32 | 15126 | fprintf (file, _(" [software FP]")); |
9a5aca8c | 15127 | |
96a846ea RE |
15128 | flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT |
15129 | | EF_ARM_PIC | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI | |
fde78edd NC |
15130 | | EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT |
15131 | | EF_ARM_MAVERICK_FLOAT); | |
fc830a83 | 15132 | break; |
9a5aca8c | 15133 | |
fc830a83 | 15134 | case EF_ARM_EABI_VER1: |
9b485d32 | 15135 | fprintf (file, _(" [Version1 EABI]")); |
9a5aca8c | 15136 | |
fc830a83 | 15137 | if (flags & EF_ARM_SYMSARESORTED) |
9b485d32 | 15138 | fprintf (file, _(" [sorted symbol table]")); |
fc830a83 | 15139 | else |
9b485d32 | 15140 | fprintf (file, _(" [unsorted symbol table]")); |
9a5aca8c | 15141 | |
fc830a83 NC |
15142 | flags &= ~ EF_ARM_SYMSARESORTED; |
15143 | break; | |
9a5aca8c | 15144 | |
fd2ec330 PB |
15145 | case EF_ARM_EABI_VER2: |
15146 | fprintf (file, _(" [Version2 EABI]")); | |
15147 | ||
15148 | if (flags & EF_ARM_SYMSARESORTED) | |
15149 | fprintf (file, _(" [sorted symbol table]")); | |
15150 | else | |
15151 | fprintf (file, _(" [unsorted symbol table]")); | |
15152 | ||
15153 | if (flags & EF_ARM_DYNSYMSUSESEGIDX) | |
15154 | fprintf (file, _(" [dynamic symbols use segment index]")); | |
15155 | ||
15156 | if (flags & EF_ARM_MAPSYMSFIRST) | |
15157 | fprintf (file, _(" [mapping symbols precede others]")); | |
15158 | ||
99e4ae17 | 15159 | flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX |
fd2ec330 PB |
15160 | | EF_ARM_MAPSYMSFIRST); |
15161 | break; | |
15162 | ||
d507cf36 PB |
15163 | case EF_ARM_EABI_VER3: |
15164 | fprintf (file, _(" [Version3 EABI]")); | |
8cb51566 PB |
15165 | break; |
15166 | ||
15167 | case EF_ARM_EABI_VER4: | |
15168 | fprintf (file, _(" [Version4 EABI]")); | |
3a4a14e9 | 15169 | goto eabi; |
d507cf36 | 15170 | |
3a4a14e9 PB |
15171 | case EF_ARM_EABI_VER5: |
15172 | fprintf (file, _(" [Version5 EABI]")); | |
3bfcb652 NC |
15173 | |
15174 | if (flags & EF_ARM_ABI_FLOAT_SOFT) | |
15175 | fprintf (file, _(" [soft-float ABI]")); | |
15176 | ||
15177 | if (flags & EF_ARM_ABI_FLOAT_HARD) | |
15178 | fprintf (file, _(" [hard-float ABI]")); | |
15179 | ||
15180 | flags &= ~(EF_ARM_ABI_FLOAT_SOFT | EF_ARM_ABI_FLOAT_HARD); | |
15181 | ||
3a4a14e9 | 15182 | eabi: |
d507cf36 PB |
15183 | if (flags & EF_ARM_BE8) |
15184 | fprintf (file, _(" [BE8]")); | |
15185 | ||
15186 | if (flags & EF_ARM_LE8) | |
15187 | fprintf (file, _(" [LE8]")); | |
15188 | ||
15189 | flags &= ~(EF_ARM_LE8 | EF_ARM_BE8); | |
15190 | break; | |
15191 | ||
fc830a83 | 15192 | default: |
9b485d32 | 15193 | fprintf (file, _(" <EABI version unrecognised>")); |
fc830a83 NC |
15194 | break; |
15195 | } | |
252b5132 | 15196 | |
fc830a83 | 15197 | flags &= ~ EF_ARM_EABIMASK; |
252b5132 | 15198 | |
fc830a83 | 15199 | if (flags & EF_ARM_RELEXEC) |
9b485d32 | 15200 | fprintf (file, _(" [relocatable executable]")); |
252b5132 | 15201 | |
18a20338 CL |
15202 | if (flags & EF_ARM_PIC) |
15203 | fprintf (file, _(" [position independent]")); | |
15204 | ||
15205 | if (elf_elfheader (abfd)->e_ident[EI_OSABI] == ELFOSABI_ARM_FDPIC) | |
15206 | fprintf (file, _(" [FDPIC ABI supplement]")); | |
15207 | ||
15208 | flags &= ~ (EF_ARM_RELEXEC | EF_ARM_PIC); | |
fc830a83 NC |
15209 | |
15210 | if (flags) | |
9b485d32 | 15211 | fprintf (file, _("<Unrecognised flag bits set>")); |
9a5aca8c | 15212 | |
252b5132 RH |
15213 | fputc ('\n', file); |
15214 | ||
b34976b6 | 15215 | return TRUE; |
252b5132 RH |
15216 | } |
15217 | ||
15218 | static int | |
57e8b36a | 15219 | elf32_arm_get_symbol_type (Elf_Internal_Sym * elf_sym, int type) |
252b5132 | 15220 | { |
2f0ca46a NC |
15221 | switch (ELF_ST_TYPE (elf_sym->st_info)) |
15222 | { | |
15223 | case STT_ARM_TFUNC: | |
15224 | return ELF_ST_TYPE (elf_sym->st_info); | |
ce855c42 | 15225 | |
2f0ca46a NC |
15226 | case STT_ARM_16BIT: |
15227 | /* If the symbol is not an object, return the STT_ARM_16BIT flag. | |
15228 | This allows us to distinguish between data used by Thumb instructions | |
15229 | and non-data (which is probably code) inside Thumb regions of an | |
15230 | executable. */ | |
1a0eb693 | 15231 | if (type != STT_OBJECT && type != STT_TLS) |
2f0ca46a NC |
15232 | return ELF_ST_TYPE (elf_sym->st_info); |
15233 | break; | |
9a5aca8c | 15234 | |
ce855c42 NC |
15235 | default: |
15236 | break; | |
2f0ca46a NC |
15237 | } |
15238 | ||
15239 | return type; | |
252b5132 | 15240 | } |
f21f3fe0 | 15241 | |
252b5132 | 15242 | static asection * |
07adf181 AM |
15243 | elf32_arm_gc_mark_hook (asection *sec, |
15244 | struct bfd_link_info *info, | |
15245 | Elf_Internal_Rela *rel, | |
15246 | struct elf_link_hash_entry *h, | |
15247 | Elf_Internal_Sym *sym) | |
252b5132 RH |
15248 | { |
15249 | if (h != NULL) | |
07adf181 | 15250 | switch (ELF32_R_TYPE (rel->r_info)) |
252b5132 RH |
15251 | { |
15252 | case R_ARM_GNU_VTINHERIT: | |
15253 | case R_ARM_GNU_VTENTRY: | |
07adf181 AM |
15254 | return NULL; |
15255 | } | |
9ad5cbcf | 15256 | |
07adf181 | 15257 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
252b5132 RH |
15258 | } |
15259 | ||
780a67af NC |
15260 | /* Look through the relocs for a section during the first phase. */ |
15261 | ||
b34976b6 | 15262 | static bfd_boolean |
57e8b36a NC |
15263 | elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info, |
15264 | asection *sec, const Elf_Internal_Rela *relocs) | |
252b5132 | 15265 | { |
b34976b6 AM |
15266 | Elf_Internal_Shdr *symtab_hdr; |
15267 | struct elf_link_hash_entry **sym_hashes; | |
b34976b6 AM |
15268 | const Elf_Internal_Rela *rel; |
15269 | const Elf_Internal_Rela *rel_end; | |
15270 | bfd *dynobj; | |
5e681ec4 | 15271 | asection *sreloc; |
5e681ec4 | 15272 | struct elf32_arm_link_hash_table *htab; |
f6e32f6d RS |
15273 | bfd_boolean call_reloc_p; |
15274 | bfd_boolean may_become_dynamic_p; | |
15275 | bfd_boolean may_need_local_target_p; | |
ce98a316 | 15276 | unsigned long nsyms; |
9a5aca8c | 15277 | |
0e1862bb | 15278 | if (bfd_link_relocatable (info)) |
b34976b6 | 15279 | return TRUE; |
9a5aca8c | 15280 | |
0ffa91dd NC |
15281 | BFD_ASSERT (is_arm_elf (abfd)); |
15282 | ||
5e681ec4 | 15283 | htab = elf32_arm_hash_table (info); |
4dfe6ac6 NC |
15284 | if (htab == NULL) |
15285 | return FALSE; | |
15286 | ||
5e681ec4 | 15287 | sreloc = NULL; |
9a5aca8c | 15288 | |
67687978 PB |
15289 | /* Create dynamic sections for relocatable executables so that we can |
15290 | copy relocations. */ | |
15291 | if (htab->root.is_relocatable_executable | |
15292 | && ! htab->root.dynamic_sections_created) | |
15293 | { | |
15294 | if (! _bfd_elf_link_create_dynamic_sections (abfd, info)) | |
15295 | return FALSE; | |
15296 | } | |
15297 | ||
cbc704f3 RS |
15298 | if (htab->root.dynobj == NULL) |
15299 | htab->root.dynobj = abfd; | |
34e77a92 RS |
15300 | if (!create_ifunc_sections (info)) |
15301 | return FALSE; | |
cbc704f3 RS |
15302 | |
15303 | dynobj = htab->root.dynobj; | |
15304 | ||
0ffa91dd | 15305 | symtab_hdr = & elf_symtab_hdr (abfd); |
252b5132 | 15306 | sym_hashes = elf_sym_hashes (abfd); |
ce98a316 | 15307 | nsyms = NUM_SHDR_ENTRIES (symtab_hdr); |
b38cadfb | 15308 | |
252b5132 RH |
15309 | rel_end = relocs + sec->reloc_count; |
15310 | for (rel = relocs; rel < rel_end; rel++) | |
15311 | { | |
34e77a92 | 15312 | Elf_Internal_Sym *isym; |
252b5132 | 15313 | struct elf_link_hash_entry *h; |
b7693d02 | 15314 | struct elf32_arm_link_hash_entry *eh; |
d42c267e | 15315 | unsigned int r_symndx; |
eb043451 | 15316 | int r_type; |
9a5aca8c | 15317 | |
252b5132 | 15318 | r_symndx = ELF32_R_SYM (rel->r_info); |
eb043451 | 15319 | r_type = ELF32_R_TYPE (rel->r_info); |
eb043451 | 15320 | r_type = arm_real_reloc_type (htab, r_type); |
ba93b8ac | 15321 | |
ce98a316 NC |
15322 | if (r_symndx >= nsyms |
15323 | /* PR 9934: It is possible to have relocations that do not | |
15324 | refer to symbols, thus it is also possible to have an | |
15325 | object file containing relocations but no symbol table. */ | |
cf35638d | 15326 | && (r_symndx > STN_UNDEF || nsyms > 0)) |
ba93b8ac | 15327 | { |
871b3ab2 | 15328 | _bfd_error_handler (_("%pB: bad symbol index: %d"), abfd, |
4eca0228 | 15329 | r_symndx); |
ba93b8ac DJ |
15330 | return FALSE; |
15331 | } | |
15332 | ||
34e77a92 RS |
15333 | h = NULL; |
15334 | isym = NULL; | |
15335 | if (nsyms > 0) | |
973a3492 | 15336 | { |
34e77a92 RS |
15337 | if (r_symndx < symtab_hdr->sh_info) |
15338 | { | |
15339 | /* A local symbol. */ | |
15340 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
15341 | abfd, r_symndx); | |
15342 | if (isym == NULL) | |
15343 | return FALSE; | |
15344 | } | |
15345 | else | |
15346 | { | |
15347 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
15348 | while (h->root.type == bfd_link_hash_indirect | |
15349 | || h->root.type == bfd_link_hash_warning) | |
15350 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
15351 | } | |
973a3492 | 15352 | } |
9a5aca8c | 15353 | |
b7693d02 DJ |
15354 | eh = (struct elf32_arm_link_hash_entry *) h; |
15355 | ||
f6e32f6d RS |
15356 | call_reloc_p = FALSE; |
15357 | may_become_dynamic_p = FALSE; | |
15358 | may_need_local_target_p = FALSE; | |
15359 | ||
0855e32b NS |
15360 | /* Could be done earlier, if h were already available. */ |
15361 | r_type = elf32_arm_tls_transition (info, r_type, h); | |
eb043451 | 15362 | switch (r_type) |
99059e56 | 15363 | { |
e8b09b87 CL |
15364 | case R_ARM_GOTOFFFUNCDESC: |
15365 | { | |
15366 | if (h == NULL) | |
15367 | { | |
15368 | if (!elf32_arm_allocate_local_sym_info (abfd)) | |
15369 | return FALSE; | |
15370 | elf32_arm_local_fdpic_cnts(abfd)[r_symndx].gotofffuncdesc_cnt += 1; | |
15371 | elf32_arm_local_fdpic_cnts(abfd)[r_symndx].funcdesc_offset = -1; | |
15372 | } | |
15373 | else | |
15374 | { | |
15375 | eh->fdpic_cnts.gotofffuncdesc_cnt++; | |
15376 | } | |
15377 | } | |
15378 | break; | |
15379 | ||
15380 | case R_ARM_GOTFUNCDESC: | |
15381 | { | |
15382 | if (h == NULL) | |
15383 | { | |
15384 | /* Such a relocation is not supposed to be generated | |
15385 | by gcc on a static function. */ | |
15386 | /* Anyway if needed it could be handled. */ | |
15387 | abort(); | |
15388 | } | |
15389 | else | |
15390 | { | |
15391 | eh->fdpic_cnts.gotfuncdesc_cnt++; | |
15392 | } | |
15393 | } | |
15394 | break; | |
15395 | ||
15396 | case R_ARM_FUNCDESC: | |
15397 | { | |
15398 | if (h == NULL) | |
15399 | { | |
15400 | if (!elf32_arm_allocate_local_sym_info (abfd)) | |
15401 | return FALSE; | |
15402 | elf32_arm_local_fdpic_cnts(abfd)[r_symndx].funcdesc_cnt += 1; | |
15403 | elf32_arm_local_fdpic_cnts(abfd)[r_symndx].funcdesc_offset = -1; | |
15404 | } | |
15405 | else | |
15406 | { | |
15407 | eh->fdpic_cnts.funcdesc_cnt++; | |
15408 | } | |
15409 | } | |
15410 | break; | |
15411 | ||
5e681ec4 | 15412 | case R_ARM_GOT32: |
eb043451 | 15413 | case R_ARM_GOT_PREL: |
ba93b8ac | 15414 | case R_ARM_TLS_GD32: |
5c5a4843 | 15415 | case R_ARM_TLS_GD32_FDPIC: |
ba93b8ac | 15416 | case R_ARM_TLS_IE32: |
5c5a4843 | 15417 | case R_ARM_TLS_IE32_FDPIC: |
0855e32b NS |
15418 | case R_ARM_TLS_GOTDESC: |
15419 | case R_ARM_TLS_DESCSEQ: | |
15420 | case R_ARM_THM_TLS_DESCSEQ: | |
15421 | case R_ARM_TLS_CALL: | |
15422 | case R_ARM_THM_TLS_CALL: | |
5e681ec4 | 15423 | /* This symbol requires a global offset table entry. */ |
ba93b8ac DJ |
15424 | { |
15425 | int tls_type, old_tls_type; | |
5e681ec4 | 15426 | |
ba93b8ac DJ |
15427 | switch (r_type) |
15428 | { | |
15429 | case R_ARM_TLS_GD32: tls_type = GOT_TLS_GD; break; | |
5c5a4843 | 15430 | case R_ARM_TLS_GD32_FDPIC: tls_type = GOT_TLS_GD; break; |
b38cadfb | 15431 | |
ba93b8ac | 15432 | case R_ARM_TLS_IE32: tls_type = GOT_TLS_IE; break; |
5c5a4843 | 15433 | case R_ARM_TLS_IE32_FDPIC: tls_type = GOT_TLS_IE; break; |
b38cadfb | 15434 | |
0855e32b NS |
15435 | case R_ARM_TLS_GOTDESC: |
15436 | case R_ARM_TLS_CALL: case R_ARM_THM_TLS_CALL: | |
15437 | case R_ARM_TLS_DESCSEQ: case R_ARM_THM_TLS_DESCSEQ: | |
15438 | tls_type = GOT_TLS_GDESC; break; | |
b38cadfb | 15439 | |
ba93b8ac DJ |
15440 | default: tls_type = GOT_NORMAL; break; |
15441 | } | |
252b5132 | 15442 | |
0e1862bb | 15443 | if (!bfd_link_executable (info) && (tls_type & GOT_TLS_IE)) |
eea6dad2 KM |
15444 | info->flags |= DF_STATIC_TLS; |
15445 | ||
ba93b8ac DJ |
15446 | if (h != NULL) |
15447 | { | |
15448 | h->got.refcount++; | |
15449 | old_tls_type = elf32_arm_hash_entry (h)->tls_type; | |
15450 | } | |
15451 | else | |
15452 | { | |
ba93b8ac | 15453 | /* This is a global offset table entry for a local symbol. */ |
34e77a92 RS |
15454 | if (!elf32_arm_allocate_local_sym_info (abfd)) |
15455 | return FALSE; | |
15456 | elf_local_got_refcounts (abfd)[r_symndx] += 1; | |
ba93b8ac DJ |
15457 | old_tls_type = elf32_arm_local_got_tls_type (abfd) [r_symndx]; |
15458 | } | |
15459 | ||
0855e32b | 15460 | /* If a variable is accessed with both tls methods, two |
99059e56 | 15461 | slots may be created. */ |
0855e32b NS |
15462 | if (GOT_TLS_GD_ANY_P (old_tls_type) |
15463 | && GOT_TLS_GD_ANY_P (tls_type)) | |
15464 | tls_type |= old_tls_type; | |
15465 | ||
15466 | /* We will already have issued an error message if there | |
15467 | is a TLS/non-TLS mismatch, based on the symbol | |
15468 | type. So just combine any TLS types needed. */ | |
ba93b8ac DJ |
15469 | if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL |
15470 | && tls_type != GOT_NORMAL) | |
15471 | tls_type |= old_tls_type; | |
15472 | ||
0855e32b | 15473 | /* If the symbol is accessed in both IE and GDESC |
99059e56 RM |
15474 | method, we're able to relax. Turn off the GDESC flag, |
15475 | without messing up with any other kind of tls types | |
6a631e86 | 15476 | that may be involved. */ |
0855e32b NS |
15477 | if ((tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_GDESC)) |
15478 | tls_type &= ~GOT_TLS_GDESC; | |
15479 | ||
ba93b8ac DJ |
15480 | if (old_tls_type != tls_type) |
15481 | { | |
15482 | if (h != NULL) | |
15483 | elf32_arm_hash_entry (h)->tls_type = tls_type; | |
15484 | else | |
15485 | elf32_arm_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
15486 | } | |
15487 | } | |
8029a119 | 15488 | /* Fall through. */ |
ba93b8ac DJ |
15489 | |
15490 | case R_ARM_TLS_LDM32: | |
5c5a4843 CL |
15491 | case R_ARM_TLS_LDM32_FDPIC: |
15492 | if (r_type == R_ARM_TLS_LDM32 || r_type == R_ARM_TLS_LDM32_FDPIC) | |
ba93b8ac | 15493 | htab->tls_ldm_got.refcount++; |
8029a119 | 15494 | /* Fall through. */ |
252b5132 | 15495 | |
c19d1205 | 15496 | case R_ARM_GOTOFF32: |
5e681ec4 | 15497 | case R_ARM_GOTPC: |
cbc704f3 RS |
15498 | if (htab->root.sgot == NULL |
15499 | && !create_got_section (htab->root.dynobj, info)) | |
15500 | return FALSE; | |
252b5132 RH |
15501 | break; |
15502 | ||
252b5132 | 15503 | case R_ARM_PC24: |
7359ea65 | 15504 | case R_ARM_PLT32: |
5b5bb741 PB |
15505 | case R_ARM_CALL: |
15506 | case R_ARM_JUMP24: | |
eb043451 | 15507 | case R_ARM_PREL31: |
c19d1205 | 15508 | case R_ARM_THM_CALL: |
bd97cb95 DJ |
15509 | case R_ARM_THM_JUMP24: |
15510 | case R_ARM_THM_JUMP19: | |
f6e32f6d RS |
15511 | call_reloc_p = TRUE; |
15512 | may_need_local_target_p = TRUE; | |
15513 | break; | |
15514 | ||
15515 | case R_ARM_ABS12: | |
15516 | /* VxWorks uses dynamic R_ARM_ABS12 relocations for | |
15517 | ldr __GOTT_INDEX__ offsets. */ | |
15518 | if (!htab->vxworks_p) | |
15519 | { | |
15520 | may_need_local_target_p = TRUE; | |
15521 | break; | |
15522 | } | |
aebf9be7 | 15523 | else goto jump_over; |
9eaff861 | 15524 | |
f6e32f6d | 15525 | /* Fall through. */ |
39623e12 | 15526 | |
96c23d59 JM |
15527 | case R_ARM_MOVW_ABS_NC: |
15528 | case R_ARM_MOVT_ABS: | |
15529 | case R_ARM_THM_MOVW_ABS_NC: | |
15530 | case R_ARM_THM_MOVT_ABS: | |
0e1862bb | 15531 | if (bfd_link_pic (info)) |
96c23d59 | 15532 | { |
4eca0228 | 15533 | _bfd_error_handler |
871b3ab2 | 15534 | (_("%pB: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"), |
96c23d59 JM |
15535 | abfd, elf32_arm_howto_table_1[r_type].name, |
15536 | (h) ? h->root.root.string : "a local symbol"); | |
15537 | bfd_set_error (bfd_error_bad_value); | |
15538 | return FALSE; | |
15539 | } | |
15540 | ||
15541 | /* Fall through. */ | |
39623e12 PB |
15542 | case R_ARM_ABS32: |
15543 | case R_ARM_ABS32_NOI: | |
aebf9be7 | 15544 | jump_over: |
0e1862bb | 15545 | if (h != NULL && bfd_link_executable (info)) |
97323ad1 WN |
15546 | { |
15547 | h->pointer_equality_needed = 1; | |
15548 | } | |
15549 | /* Fall through. */ | |
39623e12 PB |
15550 | case R_ARM_REL32: |
15551 | case R_ARM_REL32_NOI: | |
b6895b4f PB |
15552 | case R_ARM_MOVW_PREL_NC: |
15553 | case R_ARM_MOVT_PREL: | |
b6895b4f PB |
15554 | case R_ARM_THM_MOVW_PREL_NC: |
15555 | case R_ARM_THM_MOVT_PREL: | |
39623e12 | 15556 | |
b7693d02 | 15557 | /* Should the interworking branches be listed here? */ |
e8b09b87 CL |
15558 | if ((bfd_link_pic (info) || htab->root.is_relocatable_executable |
15559 | || htab->fdpic_p) | |
34e77a92 RS |
15560 | && (sec->flags & SEC_ALLOC) != 0) |
15561 | { | |
15562 | if (h == NULL | |
469a3493 | 15563 | && elf32_arm_howto_from_type (r_type)->pc_relative) |
34e77a92 RS |
15564 | { |
15565 | /* In shared libraries and relocatable executables, | |
15566 | we treat local relative references as calls; | |
15567 | see the related SYMBOL_CALLS_LOCAL code in | |
15568 | allocate_dynrelocs. */ | |
15569 | call_reloc_p = TRUE; | |
15570 | may_need_local_target_p = TRUE; | |
15571 | } | |
15572 | else | |
15573 | /* We are creating a shared library or relocatable | |
15574 | executable, and this is a reloc against a global symbol, | |
15575 | or a non-PC-relative reloc against a local symbol. | |
15576 | We may need to copy the reloc into the output. */ | |
15577 | may_become_dynamic_p = TRUE; | |
15578 | } | |
f6e32f6d RS |
15579 | else |
15580 | may_need_local_target_p = TRUE; | |
252b5132 RH |
15581 | break; |
15582 | ||
99059e56 RM |
15583 | /* This relocation describes the C++ object vtable hierarchy. |
15584 | Reconstruct it for later use during GC. */ | |
15585 | case R_ARM_GNU_VTINHERIT: | |
15586 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
15587 | return FALSE; | |
15588 | break; | |
15589 | ||
15590 | /* This relocation describes which C++ vtable entries are actually | |
15591 | used. Record for later use during GC. */ | |
15592 | case R_ARM_GNU_VTENTRY: | |
a0ea3a14 | 15593 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) |
99059e56 RM |
15594 | return FALSE; |
15595 | break; | |
15596 | } | |
f6e32f6d RS |
15597 | |
15598 | if (h != NULL) | |
15599 | { | |
15600 | if (call_reloc_p) | |
15601 | /* We may need a .plt entry if the function this reloc | |
15602 | refers to is in a different object, regardless of the | |
15603 | symbol's type. We can't tell for sure yet, because | |
15604 | something later might force the symbol local. */ | |
15605 | h->needs_plt = 1; | |
15606 | else if (may_need_local_target_p) | |
15607 | /* If this reloc is in a read-only section, we might | |
15608 | need a copy reloc. We can't check reliably at this | |
15609 | stage whether the section is read-only, as input | |
15610 | sections have not yet been mapped to output sections. | |
15611 | Tentatively set the flag for now, and correct in | |
15612 | adjust_dynamic_symbol. */ | |
15613 | h->non_got_ref = 1; | |
15614 | } | |
15615 | ||
34e77a92 RS |
15616 | if (may_need_local_target_p |
15617 | && (h != NULL || ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)) | |
f6e32f6d | 15618 | { |
34e77a92 RS |
15619 | union gotplt_union *root_plt; |
15620 | struct arm_plt_info *arm_plt; | |
15621 | struct arm_local_iplt_info *local_iplt; | |
15622 | ||
15623 | if (h != NULL) | |
15624 | { | |
15625 | root_plt = &h->plt; | |
15626 | arm_plt = &eh->plt; | |
15627 | } | |
15628 | else | |
15629 | { | |
15630 | local_iplt = elf32_arm_create_local_iplt (abfd, r_symndx); | |
15631 | if (local_iplt == NULL) | |
15632 | return FALSE; | |
15633 | root_plt = &local_iplt->root; | |
15634 | arm_plt = &local_iplt->arm; | |
15635 | } | |
15636 | ||
f6e32f6d RS |
15637 | /* If the symbol is a function that doesn't bind locally, |
15638 | this relocation will need a PLT entry. */ | |
a8c887dd NC |
15639 | if (root_plt->refcount != -1) |
15640 | root_plt->refcount += 1; | |
34e77a92 RS |
15641 | |
15642 | if (!call_reloc_p) | |
15643 | arm_plt->noncall_refcount++; | |
f6e32f6d RS |
15644 | |
15645 | /* It's too early to use htab->use_blx here, so we have to | |
15646 | record possible blx references separately from | |
15647 | relocs that definitely need a thumb stub. */ | |
15648 | ||
15649 | if (r_type == R_ARM_THM_CALL) | |
34e77a92 | 15650 | arm_plt->maybe_thumb_refcount += 1; |
f6e32f6d RS |
15651 | |
15652 | if (r_type == R_ARM_THM_JUMP24 | |
15653 | || r_type == R_ARM_THM_JUMP19) | |
34e77a92 | 15654 | arm_plt->thumb_refcount += 1; |
f6e32f6d RS |
15655 | } |
15656 | ||
15657 | if (may_become_dynamic_p) | |
15658 | { | |
15659 | struct elf_dyn_relocs *p, **head; | |
15660 | ||
15661 | /* Create a reloc section in dynobj. */ | |
15662 | if (sreloc == NULL) | |
15663 | { | |
15664 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
15665 | (sec, dynobj, 2, abfd, ! htab->use_rel); | |
15666 | ||
15667 | if (sreloc == NULL) | |
15668 | return FALSE; | |
15669 | ||
15670 | /* BPABI objects never have dynamic relocations mapped. */ | |
15671 | if (htab->symbian_p) | |
15672 | { | |
15673 | flagword flags; | |
15674 | ||
15675 | flags = bfd_get_section_flags (dynobj, sreloc); | |
15676 | flags &= ~(SEC_LOAD | SEC_ALLOC); | |
15677 | bfd_set_section_flags (dynobj, sreloc, flags); | |
15678 | } | |
15679 | } | |
15680 | ||
15681 | /* If this is a global symbol, count the number of | |
15682 | relocations we need for this symbol. */ | |
15683 | if (h != NULL) | |
15684 | head = &((struct elf32_arm_link_hash_entry *) h)->dyn_relocs; | |
15685 | else | |
15686 | { | |
34e77a92 RS |
15687 | head = elf32_arm_get_local_dynreloc_list (abfd, r_symndx, isym); |
15688 | if (head == NULL) | |
f6e32f6d | 15689 | return FALSE; |
f6e32f6d RS |
15690 | } |
15691 | ||
15692 | p = *head; | |
15693 | if (p == NULL || p->sec != sec) | |
15694 | { | |
15695 | bfd_size_type amt = sizeof *p; | |
15696 | ||
15697 | p = (struct elf_dyn_relocs *) bfd_alloc (htab->root.dynobj, amt); | |
15698 | if (p == NULL) | |
15699 | return FALSE; | |
15700 | p->next = *head; | |
15701 | *head = p; | |
15702 | p->sec = sec; | |
15703 | p->count = 0; | |
15704 | p->pc_count = 0; | |
15705 | } | |
15706 | ||
469a3493 | 15707 | if (elf32_arm_howto_from_type (r_type)->pc_relative) |
f6e32f6d RS |
15708 | p->pc_count += 1; |
15709 | p->count += 1; | |
e8b09b87 CL |
15710 | if (h == NULL && htab->fdpic_p && !bfd_link_pic(info) |
15711 | && r_type != R_ARM_ABS32 && r_type != R_ARM_ABS32_NOI) { | |
15712 | /* Here we only support R_ARM_ABS32 and R_ARM_ABS32_NOI | |
15713 | that will become rofixup. */ | |
15714 | /* This is due to the fact that we suppose all will become rofixup. */ | |
15715 | fprintf(stderr, "FDPIC does not yet support %d relocation to become dynamic for executable\n", r_type); | |
15716 | _bfd_error_handler | |
15717 | (_("FDPIC does not yet support %s relocation" | |
15718 | " to become dynamic for executable"), | |
15719 | elf32_arm_howto_table_1[r_type].name); | |
15720 | abort(); | |
15721 | } | |
f6e32f6d | 15722 | } |
252b5132 | 15723 | } |
f21f3fe0 | 15724 | |
b34976b6 | 15725 | return TRUE; |
252b5132 RH |
15726 | } |
15727 | ||
9eaff861 AO |
15728 | static void |
15729 | elf32_arm_update_relocs (asection *o, | |
15730 | struct bfd_elf_section_reloc_data *reldata) | |
15731 | { | |
15732 | void (*swap_in) (bfd *, const bfd_byte *, Elf_Internal_Rela *); | |
15733 | void (*swap_out) (bfd *, const Elf_Internal_Rela *, bfd_byte *); | |
15734 | const struct elf_backend_data *bed; | |
15735 | _arm_elf_section_data *eado; | |
15736 | struct bfd_link_order *p; | |
15737 | bfd_byte *erela_head, *erela; | |
15738 | Elf_Internal_Rela *irela_head, *irela; | |
15739 | Elf_Internal_Shdr *rel_hdr; | |
15740 | bfd *abfd; | |
15741 | unsigned int count; | |
15742 | ||
15743 | eado = get_arm_elf_section_data (o); | |
15744 | ||
15745 | if (!eado || eado->elf.this_hdr.sh_type != SHT_ARM_EXIDX) | |
15746 | return; | |
15747 | ||
15748 | abfd = o->owner; | |
15749 | bed = get_elf_backend_data (abfd); | |
15750 | rel_hdr = reldata->hdr; | |
15751 | ||
15752 | if (rel_hdr->sh_entsize == bed->s->sizeof_rel) | |
15753 | { | |
15754 | swap_in = bed->s->swap_reloc_in; | |
15755 | swap_out = bed->s->swap_reloc_out; | |
15756 | } | |
15757 | else if (rel_hdr->sh_entsize == bed->s->sizeof_rela) | |
15758 | { | |
15759 | swap_in = bed->s->swap_reloca_in; | |
15760 | swap_out = bed->s->swap_reloca_out; | |
15761 | } | |
15762 | else | |
15763 | abort (); | |
15764 | ||
15765 | erela_head = rel_hdr->contents; | |
15766 | irela_head = (Elf_Internal_Rela *) bfd_zmalloc | |
15767 | ((NUM_SHDR_ENTRIES (rel_hdr) + 1) * sizeof (*irela_head)); | |
15768 | ||
15769 | erela = erela_head; | |
15770 | irela = irela_head; | |
15771 | count = 0; | |
15772 | ||
15773 | for (p = o->map_head.link_order; p; p = p->next) | |
15774 | { | |
15775 | if (p->type == bfd_section_reloc_link_order | |
15776 | || p->type == bfd_symbol_reloc_link_order) | |
15777 | { | |
15778 | (*swap_in) (abfd, erela, irela); | |
15779 | erela += rel_hdr->sh_entsize; | |
15780 | irela++; | |
15781 | count++; | |
15782 | } | |
15783 | else if (p->type == bfd_indirect_link_order) | |
15784 | { | |
15785 | struct bfd_elf_section_reloc_data *input_reldata; | |
15786 | arm_unwind_table_edit *edit_list, *edit_tail; | |
15787 | _arm_elf_section_data *eadi; | |
15788 | bfd_size_type j; | |
15789 | bfd_vma offset; | |
15790 | asection *i; | |
15791 | ||
15792 | i = p->u.indirect.section; | |
15793 | ||
15794 | eadi = get_arm_elf_section_data (i); | |
15795 | edit_list = eadi->u.exidx.unwind_edit_list; | |
15796 | edit_tail = eadi->u.exidx.unwind_edit_tail; | |
15797 | offset = o->vma + i->output_offset; | |
15798 | ||
15799 | if (eadi->elf.rel.hdr && | |
15800 | eadi->elf.rel.hdr->sh_entsize == rel_hdr->sh_entsize) | |
15801 | input_reldata = &eadi->elf.rel; | |
15802 | else if (eadi->elf.rela.hdr && | |
15803 | eadi->elf.rela.hdr->sh_entsize == rel_hdr->sh_entsize) | |
15804 | input_reldata = &eadi->elf.rela; | |
15805 | else | |
15806 | abort (); | |
15807 | ||
15808 | if (edit_list) | |
15809 | { | |
15810 | for (j = 0; j < NUM_SHDR_ENTRIES (input_reldata->hdr); j++) | |
15811 | { | |
15812 | arm_unwind_table_edit *edit_node, *edit_next; | |
15813 | bfd_vma bias; | |
c48182bf | 15814 | bfd_vma reloc_index; |
9eaff861 AO |
15815 | |
15816 | (*swap_in) (abfd, erela, irela); | |
c48182bf | 15817 | reloc_index = (irela->r_offset - offset) / 8; |
9eaff861 AO |
15818 | |
15819 | bias = 0; | |
15820 | edit_node = edit_list; | |
15821 | for (edit_next = edit_list; | |
c48182bf | 15822 | edit_next && edit_next->index <= reloc_index; |
9eaff861 AO |
15823 | edit_next = edit_node->next) |
15824 | { | |
15825 | bias++; | |
15826 | edit_node = edit_next; | |
15827 | } | |
15828 | ||
15829 | if (edit_node->type != DELETE_EXIDX_ENTRY | |
c48182bf | 15830 | || edit_node->index != reloc_index) |
9eaff861 AO |
15831 | { |
15832 | irela->r_offset -= bias * 8; | |
15833 | irela++; | |
15834 | count++; | |
15835 | } | |
15836 | ||
15837 | erela += rel_hdr->sh_entsize; | |
15838 | } | |
15839 | ||
15840 | if (edit_tail->type == INSERT_EXIDX_CANTUNWIND_AT_END) | |
15841 | { | |
15842 | /* New relocation entity. */ | |
15843 | asection *text_sec = edit_tail->linked_section; | |
15844 | asection *text_out = text_sec->output_section; | |
15845 | bfd_vma exidx_offset = offset + i->size - 8; | |
15846 | ||
15847 | irela->r_addend = 0; | |
15848 | irela->r_offset = exidx_offset; | |
15849 | irela->r_info = ELF32_R_INFO | |
15850 | (text_out->target_index, R_ARM_PREL31); | |
15851 | irela++; | |
15852 | count++; | |
15853 | } | |
15854 | } | |
15855 | else | |
15856 | { | |
15857 | for (j = 0; j < NUM_SHDR_ENTRIES (input_reldata->hdr); j++) | |
15858 | { | |
15859 | (*swap_in) (abfd, erela, irela); | |
15860 | erela += rel_hdr->sh_entsize; | |
15861 | irela++; | |
15862 | } | |
15863 | ||
15864 | count += NUM_SHDR_ENTRIES (input_reldata->hdr); | |
15865 | } | |
15866 | } | |
15867 | } | |
15868 | ||
15869 | reldata->count = count; | |
15870 | rel_hdr->sh_size = count * rel_hdr->sh_entsize; | |
15871 | ||
15872 | erela = erela_head; | |
15873 | irela = irela_head; | |
15874 | while (count > 0) | |
15875 | { | |
15876 | (*swap_out) (abfd, irela, erela); | |
15877 | erela += rel_hdr->sh_entsize; | |
15878 | irela++; | |
15879 | count--; | |
15880 | } | |
15881 | ||
15882 | free (irela_head); | |
15883 | ||
15884 | /* Hashes are no longer valid. */ | |
15885 | free (reldata->hashes); | |
15886 | reldata->hashes = NULL; | |
15887 | } | |
15888 | ||
6a5bb875 | 15889 | /* Unwinding tables are not referenced directly. This pass marks them as |
4ba2ef8f TP |
15890 | required if the corresponding code section is marked. Similarly, ARMv8-M |
15891 | secure entry functions can only be referenced by SG veneers which are | |
15892 | created after the GC process. They need to be marked in case they reside in | |
15893 | their own section (as would be the case if code was compiled with | |
15894 | -ffunction-sections). */ | |
6a5bb875 PB |
15895 | |
15896 | static bfd_boolean | |
906e58ca NC |
15897 | elf32_arm_gc_mark_extra_sections (struct bfd_link_info *info, |
15898 | elf_gc_mark_hook_fn gc_mark_hook) | |
6a5bb875 PB |
15899 | { |
15900 | bfd *sub; | |
15901 | Elf_Internal_Shdr **elf_shdrp; | |
4ba2ef8f TP |
15902 | asection *cmse_sec; |
15903 | obj_attribute *out_attr; | |
15904 | Elf_Internal_Shdr *symtab_hdr; | |
15905 | unsigned i, sym_count, ext_start; | |
15906 | const struct elf_backend_data *bed; | |
15907 | struct elf_link_hash_entry **sym_hashes; | |
15908 | struct elf32_arm_link_hash_entry *cmse_hash; | |
15909 | bfd_boolean again, is_v8m, first_bfd_browse = TRUE; | |
6a5bb875 | 15910 | |
7f6ab9f8 AM |
15911 | _bfd_elf_gc_mark_extra_sections (info, gc_mark_hook); |
15912 | ||
4ba2ef8f TP |
15913 | out_attr = elf_known_obj_attributes_proc (info->output_bfd); |
15914 | is_v8m = out_attr[Tag_CPU_arch].i >= TAG_CPU_ARCH_V8M_BASE | |
15915 | && out_attr[Tag_CPU_arch_profile].i == 'M'; | |
15916 | ||
6a5bb875 PB |
15917 | /* Marking EH data may cause additional code sections to be marked, |
15918 | requiring multiple passes. */ | |
15919 | again = TRUE; | |
15920 | while (again) | |
15921 | { | |
15922 | again = FALSE; | |
c72f2fb2 | 15923 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
6a5bb875 PB |
15924 | { |
15925 | asection *o; | |
15926 | ||
0ffa91dd | 15927 | if (! is_arm_elf (sub)) |
6a5bb875 PB |
15928 | continue; |
15929 | ||
15930 | elf_shdrp = elf_elfsections (sub); | |
15931 | for (o = sub->sections; o != NULL; o = o->next) | |
15932 | { | |
15933 | Elf_Internal_Shdr *hdr; | |
0ffa91dd | 15934 | |
6a5bb875 | 15935 | hdr = &elf_section_data (o)->this_hdr; |
4fbb74a6 AM |
15936 | if (hdr->sh_type == SHT_ARM_EXIDX |
15937 | && hdr->sh_link | |
15938 | && hdr->sh_link < elf_numsections (sub) | |
6a5bb875 PB |
15939 | && !o->gc_mark |
15940 | && elf_shdrp[hdr->sh_link]->bfd_section->gc_mark) | |
15941 | { | |
15942 | again = TRUE; | |
15943 | if (!_bfd_elf_gc_mark (info, o, gc_mark_hook)) | |
15944 | return FALSE; | |
15945 | } | |
15946 | } | |
4ba2ef8f TP |
15947 | |
15948 | /* Mark section holding ARMv8-M secure entry functions. We mark all | |
15949 | of them so no need for a second browsing. */ | |
15950 | if (is_v8m && first_bfd_browse) | |
15951 | { | |
15952 | sym_hashes = elf_sym_hashes (sub); | |
15953 | bed = get_elf_backend_data (sub); | |
15954 | symtab_hdr = &elf_tdata (sub)->symtab_hdr; | |
15955 | sym_count = symtab_hdr->sh_size / bed->s->sizeof_sym; | |
15956 | ext_start = symtab_hdr->sh_info; | |
15957 | ||
15958 | /* Scan symbols. */ | |
15959 | for (i = ext_start; i < sym_count; i++) | |
15960 | { | |
15961 | cmse_hash = elf32_arm_hash_entry (sym_hashes[i - ext_start]); | |
15962 | ||
15963 | /* Assume it is a special symbol. If not, cmse_scan will | |
15964 | warn about it and user can do something about it. */ | |
15965 | if (ARM_GET_SYM_CMSE_SPCL (cmse_hash->root.target_internal)) | |
15966 | { | |
15967 | cmse_sec = cmse_hash->root.root.u.def.section; | |
5025eb7c AO |
15968 | if (!cmse_sec->gc_mark |
15969 | && !_bfd_elf_gc_mark (info, cmse_sec, gc_mark_hook)) | |
4ba2ef8f TP |
15970 | return FALSE; |
15971 | } | |
15972 | } | |
15973 | } | |
6a5bb875 | 15974 | } |
4ba2ef8f | 15975 | first_bfd_browse = FALSE; |
6a5bb875 PB |
15976 | } |
15977 | ||
15978 | return TRUE; | |
15979 | } | |
15980 | ||
3c9458e9 NC |
15981 | /* Treat mapping symbols as special target symbols. */ |
15982 | ||
15983 | static bfd_boolean | |
15984 | elf32_arm_is_target_special_symbol (bfd * abfd ATTRIBUTE_UNUSED, asymbol * sym) | |
15985 | { | |
b0796911 PB |
15986 | return bfd_is_arm_special_symbol_name (sym->name, |
15987 | BFD_ARM_SPECIAL_SYM_TYPE_ANY); | |
3c9458e9 NC |
15988 | } |
15989 | ||
0367ecfb NC |
15990 | /* This is a copy of elf_find_function() from elf.c except that |
15991 | ARM mapping symbols are ignored when looking for function names | |
15992 | and STT_ARM_TFUNC is considered to a function type. */ | |
252b5132 | 15993 | |
0367ecfb | 15994 | static bfd_boolean |
07d6d2b8 | 15995 | arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED, |
0367ecfb | 15996 | asymbol ** symbols, |
fb167eb2 | 15997 | asection * section, |
07d6d2b8 | 15998 | bfd_vma offset, |
0367ecfb NC |
15999 | const char ** filename_ptr, |
16000 | const char ** functionname_ptr) | |
16001 | { | |
16002 | const char * filename = NULL; | |
16003 | asymbol * func = NULL; | |
16004 | bfd_vma low_func = 0; | |
16005 | asymbol ** p; | |
252b5132 RH |
16006 | |
16007 | for (p = symbols; *p != NULL; p++) | |
16008 | { | |
16009 | elf_symbol_type *q; | |
16010 | ||
16011 | q = (elf_symbol_type *) *p; | |
16012 | ||
252b5132 RH |
16013 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) |
16014 | { | |
16015 | default: | |
16016 | break; | |
16017 | case STT_FILE: | |
16018 | filename = bfd_asymbol_name (&q->symbol); | |
16019 | break; | |
252b5132 RH |
16020 | case STT_FUNC: |
16021 | case STT_ARM_TFUNC: | |
9d2da7ca | 16022 | case STT_NOTYPE: |
b0796911 | 16023 | /* Skip mapping symbols. */ |
0367ecfb | 16024 | if ((q->symbol.flags & BSF_LOCAL) |
b0796911 PB |
16025 | && bfd_is_arm_special_symbol_name (q->symbol.name, |
16026 | BFD_ARM_SPECIAL_SYM_TYPE_ANY)) | |
0367ecfb NC |
16027 | continue; |
16028 | /* Fall through. */ | |
6b40fcba | 16029 | if (bfd_get_section (&q->symbol) == section |
252b5132 RH |
16030 | && q->symbol.value >= low_func |
16031 | && q->symbol.value <= offset) | |
16032 | { | |
16033 | func = (asymbol *) q; | |
16034 | low_func = q->symbol.value; | |
16035 | } | |
16036 | break; | |
16037 | } | |
16038 | } | |
16039 | ||
16040 | if (func == NULL) | |
b34976b6 | 16041 | return FALSE; |
252b5132 | 16042 | |
0367ecfb NC |
16043 | if (filename_ptr) |
16044 | *filename_ptr = filename; | |
16045 | if (functionname_ptr) | |
16046 | *functionname_ptr = bfd_asymbol_name (func); | |
16047 | ||
16048 | return TRUE; | |
906e58ca | 16049 | } |
0367ecfb NC |
16050 | |
16051 | ||
16052 | /* Find the nearest line to a particular section and offset, for error | |
16053 | reporting. This code is a duplicate of the code in elf.c, except | |
16054 | that it uses arm_elf_find_function. */ | |
16055 | ||
16056 | static bfd_boolean | |
07d6d2b8 AM |
16057 | elf32_arm_find_nearest_line (bfd * abfd, |
16058 | asymbol ** symbols, | |
16059 | asection * section, | |
16060 | bfd_vma offset, | |
0367ecfb NC |
16061 | const char ** filename_ptr, |
16062 | const char ** functionname_ptr, | |
fb167eb2 AM |
16063 | unsigned int * line_ptr, |
16064 | unsigned int * discriminator_ptr) | |
0367ecfb NC |
16065 | { |
16066 | bfd_boolean found = FALSE; | |
16067 | ||
fb167eb2 | 16068 | if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset, |
0367ecfb | 16069 | filename_ptr, functionname_ptr, |
fb167eb2 AM |
16070 | line_ptr, discriminator_ptr, |
16071 | dwarf_debug_sections, 0, | |
0367ecfb NC |
16072 | & elf_tdata (abfd)->dwarf2_find_line_info)) |
16073 | { | |
16074 | if (!*functionname_ptr) | |
fb167eb2 | 16075 | arm_elf_find_function (abfd, symbols, section, offset, |
0367ecfb NC |
16076 | *filename_ptr ? NULL : filename_ptr, |
16077 | functionname_ptr); | |
f21f3fe0 | 16078 | |
0367ecfb NC |
16079 | return TRUE; |
16080 | } | |
16081 | ||
fb167eb2 AM |
16082 | /* Skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain |
16083 | uses DWARF1. */ | |
16084 | ||
0367ecfb NC |
16085 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, |
16086 | & found, filename_ptr, | |
16087 | functionname_ptr, line_ptr, | |
16088 | & elf_tdata (abfd)->line_info)) | |
16089 | return FALSE; | |
16090 | ||
16091 | if (found && (*functionname_ptr || *line_ptr)) | |
16092 | return TRUE; | |
16093 | ||
16094 | if (symbols == NULL) | |
16095 | return FALSE; | |
16096 | ||
fb167eb2 | 16097 | if (! arm_elf_find_function (abfd, symbols, section, offset, |
0367ecfb NC |
16098 | filename_ptr, functionname_ptr)) |
16099 | return FALSE; | |
16100 | ||
16101 | *line_ptr = 0; | |
b34976b6 | 16102 | return TRUE; |
252b5132 RH |
16103 | } |
16104 | ||
4ab527b0 | 16105 | static bfd_boolean |
07d6d2b8 | 16106 | elf32_arm_find_inliner_info (bfd * abfd, |
4ab527b0 FF |
16107 | const char ** filename_ptr, |
16108 | const char ** functionname_ptr, | |
16109 | unsigned int * line_ptr) | |
16110 | { | |
16111 | bfd_boolean found; | |
16112 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
16113 | functionname_ptr, line_ptr, | |
16114 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
16115 | return found; | |
16116 | } | |
16117 | ||
63c1f59d AM |
16118 | /* Find dynamic relocs for H that apply to read-only sections. */ |
16119 | ||
16120 | static asection * | |
16121 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
16122 | { | |
16123 | struct elf_dyn_relocs *p; | |
16124 | ||
16125 | for (p = elf32_arm_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
16126 | { | |
16127 | asection *s = p->sec->output_section; | |
16128 | ||
16129 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
16130 | return p->sec; | |
16131 | } | |
16132 | return NULL; | |
16133 | } | |
16134 | ||
252b5132 RH |
16135 | /* Adjust a symbol defined by a dynamic object and referenced by a |
16136 | regular object. The current definition is in some section of the | |
16137 | dynamic object, but we're not including those sections. We have to | |
16138 | change the definition to something the rest of the link can | |
16139 | understand. */ | |
16140 | ||
b34976b6 | 16141 | static bfd_boolean |
57e8b36a NC |
16142 | elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info, |
16143 | struct elf_link_hash_entry * h) | |
252b5132 RH |
16144 | { |
16145 | bfd * dynobj; | |
5474d94f | 16146 | asection *s, *srel; |
b7693d02 | 16147 | struct elf32_arm_link_hash_entry * eh; |
67687978 | 16148 | struct elf32_arm_link_hash_table *globals; |
252b5132 | 16149 | |
67687978 | 16150 | globals = elf32_arm_hash_table (info); |
4dfe6ac6 NC |
16151 | if (globals == NULL) |
16152 | return FALSE; | |
16153 | ||
252b5132 RH |
16154 | dynobj = elf_hash_table (info)->dynobj; |
16155 | ||
16156 | /* Make sure we know what is going on here. */ | |
16157 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 16158 | && (h->needs_plt |
34e77a92 | 16159 | || h->type == STT_GNU_IFUNC |
60d67dc8 | 16160 | || h->is_weakalias |
f5385ebf AM |
16161 | || (h->def_dynamic |
16162 | && h->ref_regular | |
16163 | && !h->def_regular))); | |
252b5132 | 16164 | |
b7693d02 DJ |
16165 | eh = (struct elf32_arm_link_hash_entry *) h; |
16166 | ||
252b5132 RH |
16167 | /* If this is a function, put it in the procedure linkage table. We |
16168 | will fill in the contents of the procedure linkage table later, | |
16169 | when we know the address of the .got section. */ | |
34e77a92 | 16170 | if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt) |
252b5132 | 16171 | { |
34e77a92 RS |
16172 | /* Calls to STT_GNU_IFUNC symbols always use a PLT, even if the |
16173 | symbol binds locally. */ | |
5e681ec4 | 16174 | if (h->plt.refcount <= 0 |
34e77a92 RS |
16175 | || (h->type != STT_GNU_IFUNC |
16176 | && (SYMBOL_CALLS_LOCAL (info, h) | |
16177 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
16178 | && h->root.type == bfd_link_hash_undefweak)))) | |
252b5132 RH |
16179 | { |
16180 | /* This case can occur if we saw a PLT32 reloc in an input | |
5e681ec4 PB |
16181 | file, but the symbol was never referred to by a dynamic |
16182 | object, or if all references were garbage collected. In | |
16183 | such a case, we don't actually need to build a procedure | |
16184 | linkage table, and we can just do a PC24 reloc instead. */ | |
16185 | h->plt.offset = (bfd_vma) -1; | |
34e77a92 RS |
16186 | eh->plt.thumb_refcount = 0; |
16187 | eh->plt.maybe_thumb_refcount = 0; | |
16188 | eh->plt.noncall_refcount = 0; | |
f5385ebf | 16189 | h->needs_plt = 0; |
252b5132 RH |
16190 | } |
16191 | ||
b34976b6 | 16192 | return TRUE; |
252b5132 | 16193 | } |
5e681ec4 | 16194 | else |
b7693d02 DJ |
16195 | { |
16196 | /* It's possible that we incorrectly decided a .plt reloc was | |
16197 | needed for an R_ARM_PC24 or similar reloc to a non-function sym | |
16198 | in check_relocs. We can't decide accurately between function | |
16199 | and non-function syms in check-relocs; Objects loaded later in | |
16200 | the link may change h->type. So fix it now. */ | |
16201 | h->plt.offset = (bfd_vma) -1; | |
34e77a92 RS |
16202 | eh->plt.thumb_refcount = 0; |
16203 | eh->plt.maybe_thumb_refcount = 0; | |
16204 | eh->plt.noncall_refcount = 0; | |
b7693d02 | 16205 | } |
252b5132 RH |
16206 | |
16207 | /* If this is a weak symbol, and there is a real definition, the | |
16208 | processor independent code will have arranged for us to see the | |
16209 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 16210 | if (h->is_weakalias) |
252b5132 | 16211 | { |
60d67dc8 AM |
16212 | struct elf_link_hash_entry *def = weakdef (h); |
16213 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
16214 | h->root.u.def.section = def->root.u.def.section; | |
16215 | h->root.u.def.value = def->root.u.def.value; | |
b34976b6 | 16216 | return TRUE; |
252b5132 RH |
16217 | } |
16218 | ||
ba93b8ac DJ |
16219 | /* If there are no non-GOT references, we do not need a copy |
16220 | relocation. */ | |
16221 | if (!h->non_got_ref) | |
16222 | return TRUE; | |
16223 | ||
252b5132 RH |
16224 | /* This is a reference to a symbol defined by a dynamic object which |
16225 | is not a function. */ | |
16226 | ||
16227 | /* If we are creating a shared library, we must presume that the | |
16228 | only references to the symbol are via the global offset table. | |
16229 | For such cases we need not do anything here; the relocations will | |
67687978 PB |
16230 | be handled correctly by relocate_section. Relocatable executables |
16231 | can reference data in shared objects directly, so we don't need to | |
16232 | do anything here. */ | |
0e1862bb | 16233 | if (bfd_link_pic (info) || globals->root.is_relocatable_executable) |
b34976b6 | 16234 | return TRUE; |
252b5132 RH |
16235 | |
16236 | /* We must allocate the symbol in our .dynbss section, which will | |
16237 | become part of the .bss section of the executable. There will be | |
16238 | an entry for this symbol in the .dynsym section. The dynamic | |
16239 | object will contain position independent code, so all references | |
16240 | from the dynamic object to this symbol will go through the global | |
16241 | offset table. The dynamic linker will use the .dynsym entry to | |
16242 | determine the address it must put in the global offset table, so | |
16243 | both the dynamic object and the regular object will refer to the | |
16244 | same memory location for the variable. */ | |
5522f910 NC |
16245 | /* If allowed, we must generate a R_ARM_COPY reloc to tell the dynamic |
16246 | linker to copy the initial value out of the dynamic object and into | |
16247 | the runtime process image. We need to remember the offset into the | |
00a97672 | 16248 | .rel(a).bss section we are going to use. */ |
5474d94f AM |
16249 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
16250 | { | |
16251 | s = globals->root.sdynrelro; | |
16252 | srel = globals->root.sreldynrelro; | |
16253 | } | |
16254 | else | |
16255 | { | |
16256 | s = globals->root.sdynbss; | |
16257 | srel = globals->root.srelbss; | |
16258 | } | |
5522f910 NC |
16259 | if (info->nocopyreloc == 0 |
16260 | && (h->root.u.def.section->flags & SEC_ALLOC) != 0 | |
5522f910 | 16261 | && h->size != 0) |
252b5132 | 16262 | { |
47beaa6a | 16263 | elf32_arm_allocate_dynrelocs (info, srel, 1); |
f5385ebf | 16264 | h->needs_copy = 1; |
252b5132 RH |
16265 | } |
16266 | ||
6cabe1ea | 16267 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
252b5132 RH |
16268 | } |
16269 | ||
5e681ec4 PB |
16270 | /* Allocate space in .plt, .got and associated reloc sections for |
16271 | dynamic relocs. */ | |
16272 | ||
16273 | static bfd_boolean | |
47beaa6a | 16274 | allocate_dynrelocs_for_symbol (struct elf_link_hash_entry *h, void * inf) |
5e681ec4 PB |
16275 | { |
16276 | struct bfd_link_info *info; | |
16277 | struct elf32_arm_link_hash_table *htab; | |
16278 | struct elf32_arm_link_hash_entry *eh; | |
0bdcacaf | 16279 | struct elf_dyn_relocs *p; |
5e681ec4 PB |
16280 | |
16281 | if (h->root.type == bfd_link_hash_indirect) | |
16282 | return TRUE; | |
16283 | ||
e6a6bb22 AM |
16284 | eh = (struct elf32_arm_link_hash_entry *) h; |
16285 | ||
5e681ec4 PB |
16286 | info = (struct bfd_link_info *) inf; |
16287 | htab = elf32_arm_hash_table (info); | |
4dfe6ac6 NC |
16288 | if (htab == NULL) |
16289 | return FALSE; | |
5e681ec4 | 16290 | |
34e77a92 | 16291 | if ((htab->root.dynamic_sections_created || h->type == STT_GNU_IFUNC) |
5e681ec4 PB |
16292 | && h->plt.refcount > 0) |
16293 | { | |
16294 | /* Make sure this symbol is output as a dynamic symbol. | |
16295 | Undefined weak syms won't yet be marked as dynamic. */ | |
6c699715 RL |
16296 | if (h->dynindx == -1 && !h->forced_local |
16297 | && h->root.type == bfd_link_hash_undefweak) | |
5e681ec4 | 16298 | { |
c152c796 | 16299 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
16300 | return FALSE; |
16301 | } | |
16302 | ||
34e77a92 RS |
16303 | /* If the call in the PLT entry binds locally, the associated |
16304 | GOT entry should use an R_ARM_IRELATIVE relocation instead of | |
16305 | the usual R_ARM_JUMP_SLOT. Put it in the .iplt section rather | |
16306 | than the .plt section. */ | |
16307 | if (h->type == STT_GNU_IFUNC && SYMBOL_CALLS_LOCAL (info, h)) | |
16308 | { | |
16309 | eh->is_iplt = 1; | |
16310 | if (eh->plt.noncall_refcount == 0 | |
16311 | && SYMBOL_REFERENCES_LOCAL (info, h)) | |
16312 | /* All non-call references can be resolved directly. | |
16313 | This means that they can (and in some cases, must) | |
16314 | resolve directly to the run-time target, rather than | |
16315 | to the PLT. That in turns means that any .got entry | |
16316 | would be equal to the .igot.plt entry, so there's | |
16317 | no point having both. */ | |
16318 | h->got.refcount = 0; | |
16319 | } | |
16320 | ||
0e1862bb | 16321 | if (bfd_link_pic (info) |
34e77a92 | 16322 | || eh->is_iplt |
7359ea65 | 16323 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
5e681ec4 | 16324 | { |
34e77a92 | 16325 | elf32_arm_allocate_plt_entry (info, eh->is_iplt, &h->plt, &eh->plt); |
b7693d02 | 16326 | |
5e681ec4 PB |
16327 | /* If this symbol is not defined in a regular file, and we are |
16328 | not generating a shared library, then set the symbol to this | |
16329 | location in the .plt. This is required to make function | |
16330 | pointers compare as equal between the normal executable and | |
16331 | the shared library. */ | |
0e1862bb | 16332 | if (! bfd_link_pic (info) |
f5385ebf | 16333 | && !h->def_regular) |
5e681ec4 | 16334 | { |
34e77a92 | 16335 | h->root.u.def.section = htab->root.splt; |
5e681ec4 | 16336 | h->root.u.def.value = h->plt.offset; |
5e681ec4 | 16337 | |
67d74e43 DJ |
16338 | /* Make sure the function is not marked as Thumb, in case |
16339 | it is the target of an ABS32 relocation, which will | |
16340 | point to the PLT entry. */ | |
39d911fc | 16341 | ARM_SET_SYM_BRANCH_TYPE (h->target_internal, ST_BRANCH_TO_ARM); |
67d74e43 | 16342 | } |
022f8312 | 16343 | |
00a97672 RS |
16344 | /* VxWorks executables have a second set of relocations for |
16345 | each PLT entry. They go in a separate relocation section, | |
16346 | which is processed by the kernel loader. */ | |
0e1862bb | 16347 | if (htab->vxworks_p && !bfd_link_pic (info)) |
00a97672 RS |
16348 | { |
16349 | /* There is a relocation for the initial PLT entry: | |
16350 | an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */ | |
16351 | if (h->plt.offset == htab->plt_header_size) | |
47beaa6a | 16352 | elf32_arm_allocate_dynrelocs (info, htab->srelplt2, 1); |
00a97672 RS |
16353 | |
16354 | /* There are two extra relocations for each subsequent | |
16355 | PLT entry: an R_ARM_32 relocation for the GOT entry, | |
16356 | and an R_ARM_32 relocation for the PLT entry. */ | |
47beaa6a | 16357 | elf32_arm_allocate_dynrelocs (info, htab->srelplt2, 2); |
00a97672 | 16358 | } |
5e681ec4 PB |
16359 | } |
16360 | else | |
16361 | { | |
16362 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 16363 | h->needs_plt = 0; |
5e681ec4 PB |
16364 | } |
16365 | } | |
16366 | else | |
16367 | { | |
16368 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 16369 | h->needs_plt = 0; |
5e681ec4 PB |
16370 | } |
16371 | ||
0855e32b NS |
16372 | eh = (struct elf32_arm_link_hash_entry *) h; |
16373 | eh->tlsdesc_got = (bfd_vma) -1; | |
16374 | ||
5e681ec4 PB |
16375 | if (h->got.refcount > 0) |
16376 | { | |
16377 | asection *s; | |
16378 | bfd_boolean dyn; | |
ba93b8ac DJ |
16379 | int tls_type = elf32_arm_hash_entry (h)->tls_type; |
16380 | int indx; | |
5e681ec4 PB |
16381 | |
16382 | /* Make sure this symbol is output as a dynamic symbol. | |
16383 | Undefined weak syms won't yet be marked as dynamic. */ | |
e8b09b87 | 16384 | if (htab->root.dynamic_sections_created && h->dynindx == -1 && !h->forced_local |
6c699715 | 16385 | && h->root.type == bfd_link_hash_undefweak) |
5e681ec4 | 16386 | { |
c152c796 | 16387 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
16388 | return FALSE; |
16389 | } | |
16390 | ||
e5a52504 MM |
16391 | if (!htab->symbian_p) |
16392 | { | |
362d30a1 | 16393 | s = htab->root.sgot; |
e5a52504 | 16394 | h->got.offset = s->size; |
ba93b8ac DJ |
16395 | |
16396 | if (tls_type == GOT_UNKNOWN) | |
16397 | abort (); | |
16398 | ||
16399 | if (tls_type == GOT_NORMAL) | |
16400 | /* Non-TLS symbols need one GOT slot. */ | |
16401 | s->size += 4; | |
16402 | else | |
16403 | { | |
99059e56 RM |
16404 | if (tls_type & GOT_TLS_GDESC) |
16405 | { | |
0855e32b | 16406 | /* R_ARM_TLS_DESC needs 2 GOT slots. */ |
99059e56 | 16407 | eh->tlsdesc_got |
0855e32b NS |
16408 | = (htab->root.sgotplt->size |
16409 | - elf32_arm_compute_jump_table_size (htab)); | |
99059e56 RM |
16410 | htab->root.sgotplt->size += 8; |
16411 | h->got.offset = (bfd_vma) -2; | |
34e77a92 | 16412 | /* plt.got_offset needs to know there's a TLS_DESC |
0855e32b | 16413 | reloc in the middle of .got.plt. */ |
99059e56 RM |
16414 | htab->num_tls_desc++; |
16415 | } | |
0855e32b | 16416 | |
ba93b8ac | 16417 | if (tls_type & GOT_TLS_GD) |
0855e32b | 16418 | { |
5c5a4843 CL |
16419 | /* R_ARM_TLS_GD32 and R_ARM_TLS_GD32_FDPIC need two |
16420 | consecutive GOT slots. If the symbol is both GD | |
16421 | and GDESC, got.offset may have been | |
16422 | overwritten. */ | |
0855e32b NS |
16423 | h->got.offset = s->size; |
16424 | s->size += 8; | |
16425 | } | |
16426 | ||
ba93b8ac | 16427 | if (tls_type & GOT_TLS_IE) |
5c5a4843 CL |
16428 | /* R_ARM_TLS_IE32/R_ARM_TLS_IE32_FDPIC need one GOT |
16429 | slot. */ | |
ba93b8ac DJ |
16430 | s->size += 4; |
16431 | } | |
16432 | ||
e5a52504 | 16433 | dyn = htab->root.dynamic_sections_created; |
ba93b8ac DJ |
16434 | |
16435 | indx = 0; | |
0e1862bb L |
16436 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
16437 | bfd_link_pic (info), | |
16438 | h) | |
16439 | && (!bfd_link_pic (info) | |
ba93b8ac DJ |
16440 | || !SYMBOL_REFERENCES_LOCAL (info, h))) |
16441 | indx = h->dynindx; | |
16442 | ||
16443 | if (tls_type != GOT_NORMAL | |
0e1862bb | 16444 | && (bfd_link_pic (info) || indx != 0) |
ba93b8ac DJ |
16445 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
16446 | || h->root.type != bfd_link_hash_undefweak)) | |
16447 | { | |
16448 | if (tls_type & GOT_TLS_IE) | |
47beaa6a | 16449 | elf32_arm_allocate_dynrelocs (info, htab->root.srelgot, 1); |
ba93b8ac DJ |
16450 | |
16451 | if (tls_type & GOT_TLS_GD) | |
47beaa6a | 16452 | elf32_arm_allocate_dynrelocs (info, htab->root.srelgot, 1); |
ba93b8ac | 16453 | |
b38cadfb | 16454 | if (tls_type & GOT_TLS_GDESC) |
0855e32b | 16455 | { |
47beaa6a | 16456 | elf32_arm_allocate_dynrelocs (info, htab->root.srelplt, 1); |
0855e32b NS |
16457 | /* GDESC needs a trampoline to jump to. */ |
16458 | htab->tls_trampoline = -1; | |
16459 | } | |
16460 | ||
16461 | /* Only GD needs it. GDESC just emits one relocation per | |
16462 | 2 entries. */ | |
b38cadfb | 16463 | if ((tls_type & GOT_TLS_GD) && indx != 0) |
47beaa6a | 16464 | elf32_arm_allocate_dynrelocs (info, htab->root.srelgot, 1); |
ba93b8ac | 16465 | } |
e8b09b87 CL |
16466 | else if (((indx != -1) || htab->fdpic_p) |
16467 | && !SYMBOL_REFERENCES_LOCAL (info, h)) | |
b436d854 RS |
16468 | { |
16469 | if (htab->root.dynamic_sections_created) | |
16470 | /* Reserve room for the GOT entry's R_ARM_GLOB_DAT relocation. */ | |
16471 | elf32_arm_allocate_dynrelocs (info, htab->root.srelgot, 1); | |
16472 | } | |
34e77a92 RS |
16473 | else if (h->type == STT_GNU_IFUNC |
16474 | && eh->plt.noncall_refcount == 0) | |
16475 | /* No non-call references resolve the STT_GNU_IFUNC's PLT entry; | |
16476 | they all resolve dynamically instead. Reserve room for the | |
16477 | GOT entry's R_ARM_IRELATIVE relocation. */ | |
16478 | elf32_arm_allocate_irelocs (info, htab->root.srelgot, 1); | |
0e1862bb L |
16479 | else if (bfd_link_pic (info) |
16480 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
16481 | || h->root.type != bfd_link_hash_undefweak)) | |
b436d854 | 16482 | /* Reserve room for the GOT entry's R_ARM_RELATIVE relocation. */ |
47beaa6a | 16483 | elf32_arm_allocate_dynrelocs (info, htab->root.srelgot, 1); |
e8b09b87 CL |
16484 | else if (htab->fdpic_p && tls_type == GOT_NORMAL) |
16485 | /* Reserve room for rofixup for FDPIC executable. */ | |
16486 | /* TLS relocs do not need space since they are completely | |
16487 | resolved. */ | |
16488 | htab->srofixup->size += 4; | |
e5a52504 | 16489 | } |
5e681ec4 PB |
16490 | } |
16491 | else | |
16492 | h->got.offset = (bfd_vma) -1; | |
16493 | ||
e8b09b87 CL |
16494 | /* FDPIC support. */ |
16495 | if (eh->fdpic_cnts.gotofffuncdesc_cnt > 0) | |
16496 | { | |
16497 | /* Symbol musn't be exported. */ | |
16498 | if (h->dynindx != -1) | |
16499 | abort(); | |
16500 | ||
16501 | /* We only allocate one function descriptor with its associated relocation. */ | |
16502 | if (eh->fdpic_cnts.funcdesc_offset == -1) | |
16503 | { | |
16504 | asection *s = htab->root.sgot; | |
16505 | ||
16506 | eh->fdpic_cnts.funcdesc_offset = s->size; | |
16507 | s->size += 8; | |
16508 | /* We will add an R_ARM_FUNCDESC_VALUE relocation or two rofixups. */ | |
16509 | if (bfd_link_pic(info)) | |
16510 | elf32_arm_allocate_dynrelocs (info, htab->root.srelgot, 1); | |
16511 | else | |
16512 | htab->srofixup->size += 8; | |
16513 | } | |
16514 | } | |
16515 | ||
16516 | if (eh->fdpic_cnts.gotfuncdesc_cnt > 0) | |
16517 | { | |
16518 | asection *s = htab->root.sgot; | |
16519 | ||
16520 | if (htab->root.dynamic_sections_created && h->dynindx == -1 | |
16521 | && !h->forced_local) | |
16522 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
16523 | return FALSE; | |
16524 | ||
16525 | if (h->dynindx == -1) | |
16526 | { | |
16527 | /* We only allocate one function descriptor with its associated relocation. q */ | |
16528 | if (eh->fdpic_cnts.funcdesc_offset == -1) | |
16529 | { | |
16530 | ||
16531 | eh->fdpic_cnts.funcdesc_offset = s->size; | |
16532 | s->size += 8; | |
16533 | /* We will add an R_ARM_FUNCDESC_VALUE relocation or two rofixups. */ | |
16534 | if (bfd_link_pic(info)) | |
16535 | elf32_arm_allocate_dynrelocs (info, htab->root.srelgot, 1); | |
16536 | else | |
16537 | htab->srofixup->size += 8; | |
16538 | } | |
16539 | } | |
16540 | ||
16541 | /* Add one entry into the GOT and a R_ARM_FUNCDESC or | |
16542 | R_ARM_RELATIVE/rofixup relocation on it. */ | |
16543 | eh->fdpic_cnts.gotfuncdesc_offset = s->size; | |
16544 | s->size += 4; | |
16545 | if (h->dynindx == -1 && !bfd_link_pic(info)) | |
4b24dd1a | 16546 | htab->srofixup->size += 4; |
e8b09b87 | 16547 | else |
4b24dd1a | 16548 | elf32_arm_allocate_dynrelocs (info, htab->root.srelgot, 1); |
e8b09b87 CL |
16549 | } |
16550 | ||
16551 | if (eh->fdpic_cnts.funcdesc_cnt > 0) | |
16552 | { | |
16553 | if (htab->root.dynamic_sections_created && h->dynindx == -1 | |
16554 | && !h->forced_local) | |
16555 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
16556 | return FALSE; | |
16557 | ||
16558 | if (h->dynindx == -1) | |
16559 | { | |
16560 | /* We only allocate one function descriptor with its associated relocation. */ | |
16561 | if (eh->fdpic_cnts.funcdesc_offset == -1) | |
16562 | { | |
16563 | asection *s = htab->root.sgot; | |
16564 | ||
16565 | eh->fdpic_cnts.funcdesc_offset = s->size; | |
16566 | s->size += 8; | |
16567 | /* We will add an R_ARM_FUNCDESC_VALUE relocation or two rofixups. */ | |
16568 | if (bfd_link_pic(info)) | |
16569 | elf32_arm_allocate_dynrelocs (info, htab->root.srelgot, 1); | |
16570 | else | |
16571 | htab->srofixup->size += 8; | |
16572 | } | |
16573 | } | |
16574 | if (h->dynindx == -1 && !bfd_link_pic(info)) | |
16575 | { | |
16576 | /* For FDPIC executable we replace R_ARM_RELATIVE with a rofixup. */ | |
16577 | htab->srofixup->size += 4 * eh->fdpic_cnts.funcdesc_cnt; | |
16578 | } | |
16579 | else | |
16580 | { | |
16581 | /* Will need one dynamic reloc per reference. will be either | |
16582 | R_ARM_FUNCDESC or R_ARM_RELATIVE for hidden symbols. */ | |
16583 | elf32_arm_allocate_dynrelocs (info, htab->root.srelgot, | |
16584 | eh->fdpic_cnts.funcdesc_cnt); | |
16585 | } | |
16586 | } | |
16587 | ||
a4fd1a8e PB |
16588 | /* Allocate stubs for exported Thumb functions on v4t. */ |
16589 | if (!htab->use_blx && h->dynindx != -1 | |
0eaedd0e | 16590 | && h->def_regular |
39d911fc | 16591 | && ARM_GET_SYM_BRANCH_TYPE (h->target_internal) == ST_BRANCH_TO_THUMB |
a4fd1a8e PB |
16592 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) |
16593 | { | |
16594 | struct elf_link_hash_entry * th; | |
16595 | struct bfd_link_hash_entry * bh; | |
16596 | struct elf_link_hash_entry * myh; | |
16597 | char name[1024]; | |
16598 | asection *s; | |
16599 | bh = NULL; | |
16600 | /* Create a new symbol to regist the real location of the function. */ | |
16601 | s = h->root.u.def.section; | |
906e58ca | 16602 | sprintf (name, "__real_%s", h->root.root.string); |
a4fd1a8e PB |
16603 | _bfd_generic_link_add_one_symbol (info, s->owner, |
16604 | name, BSF_GLOBAL, s, | |
16605 | h->root.u.def.value, | |
16606 | NULL, TRUE, FALSE, &bh); | |
16607 | ||
16608 | myh = (struct elf_link_hash_entry *) bh; | |
35fc36a8 | 16609 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); |
a4fd1a8e | 16610 | myh->forced_local = 1; |
39d911fc | 16611 | ARM_SET_SYM_BRANCH_TYPE (myh->target_internal, ST_BRANCH_TO_THUMB); |
a4fd1a8e PB |
16612 | eh->export_glue = myh; |
16613 | th = record_arm_to_thumb_glue (info, h); | |
16614 | /* Point the symbol at the stub. */ | |
16615 | h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC); | |
39d911fc | 16616 | ARM_SET_SYM_BRANCH_TYPE (h->target_internal, ST_BRANCH_TO_ARM); |
a4fd1a8e PB |
16617 | h->root.u.def.section = th->root.u.def.section; |
16618 | h->root.u.def.value = th->root.u.def.value & ~1; | |
16619 | } | |
16620 | ||
0bdcacaf | 16621 | if (eh->dyn_relocs == NULL) |
5e681ec4 PB |
16622 | return TRUE; |
16623 | ||
16624 | /* In the shared -Bsymbolic case, discard space allocated for | |
16625 | dynamic pc-relative relocs against symbols which turn out to be | |
16626 | defined in regular objects. For the normal shared case, discard | |
16627 | space for pc-relative relocs that have become local due to symbol | |
16628 | visibility changes. */ | |
16629 | ||
e8b09b87 | 16630 | if (bfd_link_pic (info) || htab->root.is_relocatable_executable || htab->fdpic_p) |
5e681ec4 | 16631 | { |
469a3493 RM |
16632 | /* Relocs that use pc_count are PC-relative forms, which will appear |
16633 | on something like ".long foo - ." or "movw REG, foo - .". We want | |
16634 | calls to protected symbols to resolve directly to the function | |
16635 | rather than going via the plt. If people want function pointer | |
16636 | comparisons to work as expected then they should avoid writing | |
16637 | assembly like ".long foo - .". */ | |
ba93b8ac DJ |
16638 | if (SYMBOL_CALLS_LOCAL (info, h)) |
16639 | { | |
0bdcacaf | 16640 | struct elf_dyn_relocs **pp; |
ba93b8ac | 16641 | |
0bdcacaf | 16642 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) |
ba93b8ac DJ |
16643 | { |
16644 | p->count -= p->pc_count; | |
16645 | p->pc_count = 0; | |
16646 | if (p->count == 0) | |
16647 | *pp = p->next; | |
16648 | else | |
16649 | pp = &p->next; | |
16650 | } | |
16651 | } | |
16652 | ||
4dfe6ac6 | 16653 | if (htab->vxworks_p) |
3348747a | 16654 | { |
0bdcacaf | 16655 | struct elf_dyn_relocs **pp; |
3348747a | 16656 | |
0bdcacaf | 16657 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) |
3348747a | 16658 | { |
0bdcacaf | 16659 | if (strcmp (p->sec->output_section->name, ".tls_vars") == 0) |
3348747a NS |
16660 | *pp = p->next; |
16661 | else | |
16662 | pp = &p->next; | |
16663 | } | |
16664 | } | |
16665 | ||
ba93b8ac | 16666 | /* Also discard relocs on undefined weak syms with non-default |
99059e56 | 16667 | visibility. */ |
0bdcacaf | 16668 | if (eh->dyn_relocs != NULL |
5e681ec4 | 16669 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 | 16670 | { |
95b03e4a L |
16671 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
16672 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
0bdcacaf | 16673 | eh->dyn_relocs = NULL; |
22d606e9 AM |
16674 | |
16675 | /* Make sure undefined weak symbols are output as a dynamic | |
16676 | symbol in PIEs. */ | |
e8b09b87 | 16677 | else if (htab->root.dynamic_sections_created && h->dynindx == -1 |
22d606e9 AM |
16678 | && !h->forced_local) |
16679 | { | |
16680 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
16681 | return FALSE; | |
16682 | } | |
16683 | } | |
16684 | ||
67687978 PB |
16685 | else if (htab->root.is_relocatable_executable && h->dynindx == -1 |
16686 | && h->root.type == bfd_link_hash_new) | |
16687 | { | |
16688 | /* Output absolute symbols so that we can create relocations | |
16689 | against them. For normal symbols we output a relocation | |
16690 | against the section that contains them. */ | |
16691 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
16692 | return FALSE; | |
16693 | } | |
16694 | ||
5e681ec4 PB |
16695 | } |
16696 | else | |
16697 | { | |
16698 | /* For the non-shared case, discard space for relocs against | |
16699 | symbols which turn out to need copy relocs or are not | |
16700 | dynamic. */ | |
16701 | ||
f5385ebf AM |
16702 | if (!h->non_got_ref |
16703 | && ((h->def_dynamic | |
16704 | && !h->def_regular) | |
5e681ec4 PB |
16705 | || (htab->root.dynamic_sections_created |
16706 | && (h->root.type == bfd_link_hash_undefweak | |
16707 | || h->root.type == bfd_link_hash_undefined)))) | |
16708 | { | |
16709 | /* Make sure this symbol is output as a dynamic symbol. | |
16710 | Undefined weak syms won't yet be marked as dynamic. */ | |
6c699715 RL |
16711 | if (h->dynindx == -1 && !h->forced_local |
16712 | && h->root.type == bfd_link_hash_undefweak) | |
5e681ec4 | 16713 | { |
c152c796 | 16714 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
16715 | return FALSE; |
16716 | } | |
16717 | ||
16718 | /* If that succeeded, we know we'll be keeping all the | |
16719 | relocs. */ | |
16720 | if (h->dynindx != -1) | |
16721 | goto keep; | |
16722 | } | |
16723 | ||
0bdcacaf | 16724 | eh->dyn_relocs = NULL; |
5e681ec4 PB |
16725 | |
16726 | keep: ; | |
16727 | } | |
16728 | ||
16729 | /* Finally, allocate space. */ | |
0bdcacaf | 16730 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
5e681ec4 | 16731 | { |
0bdcacaf | 16732 | asection *sreloc = elf_section_data (p->sec)->sreloc; |
e8b09b87 | 16733 | |
34e77a92 RS |
16734 | if (h->type == STT_GNU_IFUNC |
16735 | && eh->plt.noncall_refcount == 0 | |
16736 | && SYMBOL_REFERENCES_LOCAL (info, h)) | |
16737 | elf32_arm_allocate_irelocs (info, sreloc, p->count); | |
e8b09b87 CL |
16738 | else if (h->dynindx != -1 && (!bfd_link_pic(info) || !info->symbolic || !h->def_regular)) |
16739 | elf32_arm_allocate_dynrelocs (info, sreloc, p->count); | |
16740 | else if (htab->fdpic_p && !bfd_link_pic(info)) | |
16741 | htab->srofixup->size += 4 * p->count; | |
34e77a92 RS |
16742 | else |
16743 | elf32_arm_allocate_dynrelocs (info, sreloc, p->count); | |
5e681ec4 PB |
16744 | } |
16745 | ||
16746 | return TRUE; | |
16747 | } | |
16748 | ||
63c1f59d AM |
16749 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to |
16750 | read-only sections. */ | |
08d1f311 DJ |
16751 | |
16752 | static bfd_boolean | |
63c1f59d | 16753 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p) |
08d1f311 | 16754 | { |
63c1f59d | 16755 | asection *sec; |
08d1f311 | 16756 | |
63c1f59d AM |
16757 | if (h->root.type == bfd_link_hash_indirect) |
16758 | return TRUE; | |
08d1f311 | 16759 | |
63c1f59d AM |
16760 | sec = readonly_dynrelocs (h); |
16761 | if (sec != NULL) | |
16762 | { | |
16763 | struct bfd_link_info *info = (struct bfd_link_info *) info_p; | |
08d1f311 | 16764 | |
63c1f59d AM |
16765 | info->flags |= DF_TEXTREL; |
16766 | info->callbacks->minfo | |
c1c8c1ef | 16767 | (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"), |
63c1f59d | 16768 | sec->owner, h->root.root.string, sec); |
08d1f311 | 16769 | |
63c1f59d AM |
16770 | /* Not an error, just cut short the traversal. */ |
16771 | return FALSE; | |
08d1f311 | 16772 | } |
cb10292c | 16773 | |
08d1f311 DJ |
16774 | return TRUE; |
16775 | } | |
16776 | ||
d504ffc8 DJ |
16777 | void |
16778 | bfd_elf32_arm_set_byteswap_code (struct bfd_link_info *info, | |
16779 | int byteswap_code) | |
16780 | { | |
16781 | struct elf32_arm_link_hash_table *globals; | |
16782 | ||
16783 | globals = elf32_arm_hash_table (info); | |
4dfe6ac6 NC |
16784 | if (globals == NULL) |
16785 | return; | |
16786 | ||
d504ffc8 DJ |
16787 | globals->byteswap_code = byteswap_code; |
16788 | } | |
16789 | ||
252b5132 RH |
16790 | /* Set the sizes of the dynamic sections. */ |
16791 | ||
b34976b6 | 16792 | static bfd_boolean |
57e8b36a NC |
16793 | elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED, |
16794 | struct bfd_link_info * info) | |
252b5132 RH |
16795 | { |
16796 | bfd * dynobj; | |
16797 | asection * s; | |
b34976b6 AM |
16798 | bfd_boolean plt; |
16799 | bfd_boolean relocs; | |
5e681ec4 PB |
16800 | bfd *ibfd; |
16801 | struct elf32_arm_link_hash_table *htab; | |
252b5132 | 16802 | |
5e681ec4 | 16803 | htab = elf32_arm_hash_table (info); |
4dfe6ac6 NC |
16804 | if (htab == NULL) |
16805 | return FALSE; | |
16806 | ||
252b5132 RH |
16807 | dynobj = elf_hash_table (info)->dynobj; |
16808 | BFD_ASSERT (dynobj != NULL); | |
39b41c9c | 16809 | check_use_blx (htab); |
252b5132 RH |
16810 | |
16811 | if (elf_hash_table (info)->dynamic_sections_created) | |
16812 | { | |
16813 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 16814 | if (bfd_link_executable (info) && !info->nointerp) |
252b5132 | 16815 | { |
3d4d4302 | 16816 | s = bfd_get_linker_section (dynobj, ".interp"); |
252b5132 | 16817 | BFD_ASSERT (s != NULL); |
eea6121a | 16818 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
252b5132 RH |
16819 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
16820 | } | |
16821 | } | |
5e681ec4 PB |
16822 | |
16823 | /* Set up .got offsets for local syms, and space for local dynamic | |
16824 | relocs. */ | |
c72f2fb2 | 16825 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
252b5132 | 16826 | { |
5e681ec4 PB |
16827 | bfd_signed_vma *local_got; |
16828 | bfd_signed_vma *end_local_got; | |
34e77a92 | 16829 | struct arm_local_iplt_info **local_iplt_ptr, *local_iplt; |
5e681ec4 | 16830 | char *local_tls_type; |
0855e32b | 16831 | bfd_vma *local_tlsdesc_gotent; |
5e681ec4 PB |
16832 | bfd_size_type locsymcount; |
16833 | Elf_Internal_Shdr *symtab_hdr; | |
16834 | asection *srel; | |
4dfe6ac6 | 16835 | bfd_boolean is_vxworks = htab->vxworks_p; |
34e77a92 | 16836 | unsigned int symndx; |
e8b09b87 | 16837 | struct fdpic_local *local_fdpic_cnts; |
5e681ec4 | 16838 | |
0ffa91dd | 16839 | if (! is_arm_elf (ibfd)) |
5e681ec4 PB |
16840 | continue; |
16841 | ||
16842 | for (s = ibfd->sections; s != NULL; s = s->next) | |
16843 | { | |
0bdcacaf | 16844 | struct elf_dyn_relocs *p; |
5e681ec4 | 16845 | |
0bdcacaf | 16846 | for (p = (struct elf_dyn_relocs *) |
99059e56 | 16847 | elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
5e681ec4 | 16848 | { |
0bdcacaf RS |
16849 | if (!bfd_is_abs_section (p->sec) |
16850 | && bfd_is_abs_section (p->sec->output_section)) | |
5e681ec4 PB |
16851 | { |
16852 | /* Input section has been discarded, either because | |
16853 | it is a copy of a linkonce section or due to | |
16854 | linker script /DISCARD/, so we'll be discarding | |
16855 | the relocs too. */ | |
16856 | } | |
3348747a | 16857 | else if (is_vxworks |
0bdcacaf | 16858 | && strcmp (p->sec->output_section->name, |
3348747a NS |
16859 | ".tls_vars") == 0) |
16860 | { | |
16861 | /* Relocations in vxworks .tls_vars sections are | |
16862 | handled specially by the loader. */ | |
16863 | } | |
5e681ec4 PB |
16864 | else if (p->count != 0) |
16865 | { | |
0bdcacaf | 16866 | srel = elf_section_data (p->sec)->sreloc; |
e8b09b87 CL |
16867 | if (htab->fdpic_p && !bfd_link_pic(info)) |
16868 | htab->srofixup->size += 4 * p->count; | |
16869 | else | |
16870 | elf32_arm_allocate_dynrelocs (info, srel, p->count); | |
0bdcacaf | 16871 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
5e681ec4 PB |
16872 | info->flags |= DF_TEXTREL; |
16873 | } | |
16874 | } | |
16875 | } | |
16876 | ||
16877 | local_got = elf_local_got_refcounts (ibfd); | |
16878 | if (!local_got) | |
16879 | continue; | |
16880 | ||
0ffa91dd | 16881 | symtab_hdr = & elf_symtab_hdr (ibfd); |
5e681ec4 PB |
16882 | locsymcount = symtab_hdr->sh_info; |
16883 | end_local_got = local_got + locsymcount; | |
34e77a92 | 16884 | local_iplt_ptr = elf32_arm_local_iplt (ibfd); |
ba93b8ac | 16885 | local_tls_type = elf32_arm_local_got_tls_type (ibfd); |
0855e32b | 16886 | local_tlsdesc_gotent = elf32_arm_local_tlsdesc_gotent (ibfd); |
e8b09b87 | 16887 | local_fdpic_cnts = elf32_arm_local_fdpic_cnts (ibfd); |
34e77a92 | 16888 | symndx = 0; |
362d30a1 RS |
16889 | s = htab->root.sgot; |
16890 | srel = htab->root.srelgot; | |
0855e32b | 16891 | for (; local_got < end_local_got; |
34e77a92 | 16892 | ++local_got, ++local_iplt_ptr, ++local_tls_type, |
e8b09b87 | 16893 | ++local_tlsdesc_gotent, ++symndx, ++local_fdpic_cnts) |
5e681ec4 | 16894 | { |
0855e32b | 16895 | *local_tlsdesc_gotent = (bfd_vma) -1; |
34e77a92 | 16896 | local_iplt = *local_iplt_ptr; |
e8b09b87 CL |
16897 | |
16898 | /* FDPIC support. */ | |
16899 | if (local_fdpic_cnts->gotofffuncdesc_cnt > 0) | |
16900 | { | |
16901 | if (local_fdpic_cnts->funcdesc_offset == -1) | |
16902 | { | |
16903 | local_fdpic_cnts->funcdesc_offset = s->size; | |
16904 | s->size += 8; | |
16905 | ||
16906 | /* We will add an R_ARM_FUNCDESC_VALUE relocation or two rofixups. */ | |
16907 | if (bfd_link_pic(info)) | |
16908 | elf32_arm_allocate_dynrelocs (info, srel, 1); | |
16909 | else | |
16910 | htab->srofixup->size += 8; | |
16911 | } | |
16912 | } | |
16913 | ||
16914 | if (local_fdpic_cnts->funcdesc_cnt > 0) | |
16915 | { | |
16916 | if (local_fdpic_cnts->funcdesc_offset == -1) | |
16917 | { | |
16918 | local_fdpic_cnts->funcdesc_offset = s->size; | |
16919 | s->size += 8; | |
16920 | ||
16921 | /* We will add an R_ARM_FUNCDESC_VALUE relocation or two rofixups. */ | |
16922 | if (bfd_link_pic(info)) | |
16923 | elf32_arm_allocate_dynrelocs (info, srel, 1); | |
16924 | else | |
16925 | htab->srofixup->size += 8; | |
16926 | } | |
16927 | ||
16928 | /* We will add n R_ARM_RELATIVE relocations or n rofixups. */ | |
16929 | if (bfd_link_pic(info)) | |
16930 | elf32_arm_allocate_dynrelocs (info, srel, local_fdpic_cnts->funcdesc_cnt); | |
16931 | else | |
16932 | htab->srofixup->size += 4 * local_fdpic_cnts->funcdesc_cnt; | |
16933 | } | |
16934 | ||
34e77a92 RS |
16935 | if (local_iplt != NULL) |
16936 | { | |
16937 | struct elf_dyn_relocs *p; | |
16938 | ||
16939 | if (local_iplt->root.refcount > 0) | |
16940 | { | |
16941 | elf32_arm_allocate_plt_entry (info, TRUE, | |
16942 | &local_iplt->root, | |
16943 | &local_iplt->arm); | |
16944 | if (local_iplt->arm.noncall_refcount == 0) | |
16945 | /* All references to the PLT are calls, so all | |
16946 | non-call references can resolve directly to the | |
16947 | run-time target. This means that the .got entry | |
16948 | would be the same as the .igot.plt entry, so there's | |
16949 | no point creating both. */ | |
16950 | *local_got = 0; | |
16951 | } | |
16952 | else | |
16953 | { | |
16954 | BFD_ASSERT (local_iplt->arm.noncall_refcount == 0); | |
16955 | local_iplt->root.offset = (bfd_vma) -1; | |
16956 | } | |
16957 | ||
16958 | for (p = local_iplt->dyn_relocs; p != NULL; p = p->next) | |
16959 | { | |
16960 | asection *psrel; | |
16961 | ||
16962 | psrel = elf_section_data (p->sec)->sreloc; | |
16963 | if (local_iplt->arm.noncall_refcount == 0) | |
16964 | elf32_arm_allocate_irelocs (info, psrel, p->count); | |
16965 | else | |
16966 | elf32_arm_allocate_dynrelocs (info, psrel, p->count); | |
16967 | } | |
16968 | } | |
5e681ec4 PB |
16969 | if (*local_got > 0) |
16970 | { | |
34e77a92 RS |
16971 | Elf_Internal_Sym *isym; |
16972 | ||
eea6121a | 16973 | *local_got = s->size; |
ba93b8ac DJ |
16974 | if (*local_tls_type & GOT_TLS_GD) |
16975 | /* TLS_GD relocs need an 8-byte structure in the GOT. */ | |
16976 | s->size += 8; | |
0855e32b NS |
16977 | if (*local_tls_type & GOT_TLS_GDESC) |
16978 | { | |
16979 | *local_tlsdesc_gotent = htab->root.sgotplt->size | |
16980 | - elf32_arm_compute_jump_table_size (htab); | |
16981 | htab->root.sgotplt->size += 8; | |
16982 | *local_got = (bfd_vma) -2; | |
34e77a92 | 16983 | /* plt.got_offset needs to know there's a TLS_DESC |
0855e32b | 16984 | reloc in the middle of .got.plt. */ |
99059e56 | 16985 | htab->num_tls_desc++; |
0855e32b | 16986 | } |
ba93b8ac DJ |
16987 | if (*local_tls_type & GOT_TLS_IE) |
16988 | s->size += 4; | |
ba93b8ac | 16989 | |
0855e32b NS |
16990 | if (*local_tls_type & GOT_NORMAL) |
16991 | { | |
16992 | /* If the symbol is both GD and GDESC, *local_got | |
16993 | may have been overwritten. */ | |
16994 | *local_got = s->size; | |
16995 | s->size += 4; | |
16996 | } | |
16997 | ||
34e77a92 RS |
16998 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, symndx); |
16999 | if (isym == NULL) | |
17000 | return FALSE; | |
17001 | ||
17002 | /* If all references to an STT_GNU_IFUNC PLT are calls, | |
17003 | then all non-call references, including this GOT entry, | |
17004 | resolve directly to the run-time target. */ | |
17005 | if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC | |
17006 | && (local_iplt == NULL | |
17007 | || local_iplt->arm.noncall_refcount == 0)) | |
17008 | elf32_arm_allocate_irelocs (info, srel, 1); | |
e8b09b87 | 17009 | else if (bfd_link_pic (info) || output_bfd->flags & DYNAMIC || htab->fdpic_p) |
0855e32b | 17010 | { |
e8b09b87 | 17011 | if ((bfd_link_pic (info) && !(*local_tls_type & GOT_TLS_GDESC))) |
3064e1ff | 17012 | elf32_arm_allocate_dynrelocs (info, srel, 1); |
e8b09b87 CL |
17013 | else if (htab->fdpic_p && *local_tls_type & GOT_NORMAL) |
17014 | htab->srofixup->size += 4; | |
99059e56 | 17015 | |
e8b09b87 CL |
17016 | if ((bfd_link_pic (info) || htab->fdpic_p) |
17017 | && *local_tls_type & GOT_TLS_GDESC) | |
3064e1ff JB |
17018 | { |
17019 | elf32_arm_allocate_dynrelocs (info, | |
17020 | htab->root.srelplt, 1); | |
17021 | htab->tls_trampoline = -1; | |
17022 | } | |
0855e32b | 17023 | } |
5e681ec4 PB |
17024 | } |
17025 | else | |
17026 | *local_got = (bfd_vma) -1; | |
17027 | } | |
252b5132 RH |
17028 | } |
17029 | ||
ba93b8ac DJ |
17030 | if (htab->tls_ldm_got.refcount > 0) |
17031 | { | |
17032 | /* Allocate two GOT entries and one dynamic relocation (if necessary) | |
5c5a4843 | 17033 | for R_ARM_TLS_LDM32/R_ARM_TLS_LDM32_FDPIC relocations. */ |
362d30a1 RS |
17034 | htab->tls_ldm_got.offset = htab->root.sgot->size; |
17035 | htab->root.sgot->size += 8; | |
0e1862bb | 17036 | if (bfd_link_pic (info)) |
47beaa6a | 17037 | elf32_arm_allocate_dynrelocs (info, htab->root.srelgot, 1); |
ba93b8ac DJ |
17038 | } |
17039 | else | |
17040 | htab->tls_ldm_got.offset = -1; | |
17041 | ||
e8b09b87 CL |
17042 | /* At the very end of the .rofixup section is a pointer to the GOT, |
17043 | reserve space for it. */ | |
17044 | if (htab->fdpic_p && htab->srofixup != NULL) | |
17045 | htab->srofixup->size += 4; | |
17046 | ||
5e681ec4 PB |
17047 | /* Allocate global sym .plt and .got entries, and space for global |
17048 | sym dynamic relocs. */ | |
47beaa6a | 17049 | elf_link_hash_traverse (& htab->root, allocate_dynrelocs_for_symbol, info); |
252b5132 | 17050 | |
d504ffc8 | 17051 | /* Here we rummage through the found bfds to collect glue information. */ |
c72f2fb2 | 17052 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
c7b8f16e | 17053 | { |
0ffa91dd | 17054 | if (! is_arm_elf (ibfd)) |
e44a2c9c AM |
17055 | continue; |
17056 | ||
c7b8f16e JB |
17057 | /* Initialise mapping tables for code/data. */ |
17058 | bfd_elf32_arm_init_maps (ibfd); | |
906e58ca | 17059 | |
c7b8f16e | 17060 | if (!bfd_elf32_arm_process_before_allocation (ibfd, info) |
a504d23a LA |
17061 | || !bfd_elf32_arm_vfp11_erratum_scan (ibfd, info) |
17062 | || !bfd_elf32_arm_stm32l4xx_erratum_scan (ibfd, info)) | |
90b6238f | 17063 | _bfd_error_handler (_("errors encountered processing file %pB"), ibfd); |
c7b8f16e | 17064 | } |
d504ffc8 | 17065 | |
3e6b1042 DJ |
17066 | /* Allocate space for the glue sections now that we've sized them. */ |
17067 | bfd_elf32_arm_allocate_interworking_sections (info); | |
17068 | ||
0855e32b NS |
17069 | /* For every jump slot reserved in the sgotplt, reloc_count is |
17070 | incremented. However, when we reserve space for TLS descriptors, | |
17071 | it's not incremented, so in order to compute the space reserved | |
17072 | for them, it suffices to multiply the reloc count by the jump | |
17073 | slot size. */ | |
17074 | if (htab->root.srelplt) | |
17075 | htab->sgotplt_jump_table_size = elf32_arm_compute_jump_table_size(htab); | |
17076 | ||
17077 | if (htab->tls_trampoline) | |
17078 | { | |
17079 | if (htab->root.splt->size == 0) | |
17080 | htab->root.splt->size += htab->plt_header_size; | |
b38cadfb | 17081 | |
0855e32b NS |
17082 | htab->tls_trampoline = htab->root.splt->size; |
17083 | htab->root.splt->size += htab->plt_entry_size; | |
b38cadfb | 17084 | |
0855e32b | 17085 | /* If we're not using lazy TLS relocations, don't generate the |
99059e56 | 17086 | PLT and GOT entries they require. */ |
0855e32b NS |
17087 | if (!(info->flags & DF_BIND_NOW)) |
17088 | { | |
17089 | htab->dt_tlsdesc_got = htab->root.sgot->size; | |
17090 | htab->root.sgot->size += 4; | |
17091 | ||
17092 | htab->dt_tlsdesc_plt = htab->root.splt->size; | |
17093 | htab->root.splt->size += 4 * ARRAY_SIZE (dl_tlsdesc_lazy_trampoline); | |
17094 | } | |
17095 | } | |
17096 | ||
252b5132 RH |
17097 | /* The check_relocs and adjust_dynamic_symbol entry points have |
17098 | determined the sizes of the various dynamic sections. Allocate | |
17099 | memory for them. */ | |
b34976b6 AM |
17100 | plt = FALSE; |
17101 | relocs = FALSE; | |
252b5132 RH |
17102 | for (s = dynobj->sections; s != NULL; s = s->next) |
17103 | { | |
17104 | const char * name; | |
252b5132 RH |
17105 | |
17106 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
17107 | continue; | |
17108 | ||
17109 | /* It's OK to base decisions on the section name, because none | |
17110 | of the dynobj section names depend upon the input files. */ | |
17111 | name = bfd_get_section_name (dynobj, s); | |
17112 | ||
34e77a92 | 17113 | if (s == htab->root.splt) |
252b5132 | 17114 | { |
c456f082 AM |
17115 | /* Remember whether there is a PLT. */ |
17116 | plt = s->size != 0; | |
252b5132 | 17117 | } |
0112cd26 | 17118 | else if (CONST_STRNEQ (name, ".rel")) |
252b5132 | 17119 | { |
c456f082 | 17120 | if (s->size != 0) |
252b5132 | 17121 | { |
252b5132 | 17122 | /* Remember whether there are any reloc sections other |
00a97672 | 17123 | than .rel(a).plt and .rela.plt.unloaded. */ |
362d30a1 | 17124 | if (s != htab->root.srelplt && s != htab->srelplt2) |
b34976b6 | 17125 | relocs = TRUE; |
252b5132 RH |
17126 | |
17127 | /* We use the reloc_count field as a counter if we need | |
17128 | to copy relocs into the output file. */ | |
17129 | s->reloc_count = 0; | |
17130 | } | |
17131 | } | |
34e77a92 RS |
17132 | else if (s != htab->root.sgot |
17133 | && s != htab->root.sgotplt | |
17134 | && s != htab->root.iplt | |
17135 | && s != htab->root.igotplt | |
5474d94f | 17136 | && s != htab->root.sdynbss |
e8b09b87 CL |
17137 | && s != htab->root.sdynrelro |
17138 | && s != htab->srofixup) | |
252b5132 RH |
17139 | { |
17140 | /* It's not one of our sections, so don't allocate space. */ | |
17141 | continue; | |
17142 | } | |
17143 | ||
c456f082 | 17144 | if (s->size == 0) |
252b5132 | 17145 | { |
c456f082 | 17146 | /* If we don't need this section, strip it from the |
00a97672 RS |
17147 | output file. This is mostly to handle .rel(a).bss and |
17148 | .rel(a).plt. We must create both sections in | |
c456f082 AM |
17149 | create_dynamic_sections, because they must be created |
17150 | before the linker maps input sections to output | |
17151 | sections. The linker does that before | |
17152 | adjust_dynamic_symbol is called, and it is that | |
17153 | function which decides whether anything needs to go | |
17154 | into these sections. */ | |
8423293d | 17155 | s->flags |= SEC_EXCLUDE; |
252b5132 RH |
17156 | continue; |
17157 | } | |
17158 | ||
c456f082 AM |
17159 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
17160 | continue; | |
17161 | ||
252b5132 | 17162 | /* Allocate memory for the section contents. */ |
21d799b5 | 17163 | s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size); |
c456f082 | 17164 | if (s->contents == NULL) |
b34976b6 | 17165 | return FALSE; |
252b5132 RH |
17166 | } |
17167 | ||
17168 | if (elf_hash_table (info)->dynamic_sections_created) | |
17169 | { | |
17170 | /* Add some entries to the .dynamic section. We fill in the | |
17171 | values later, in elf32_arm_finish_dynamic_sections, but we | |
17172 | must add the entries now so that we get the correct size for | |
17173 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
17174 | dynamic linker and used by the debugger. */ | |
dc810e39 | 17175 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 17176 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 17177 | |
0e1862bb | 17178 | if (bfd_link_executable (info)) |
252b5132 | 17179 | { |
dc810e39 | 17180 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 17181 | return FALSE; |
252b5132 RH |
17182 | } |
17183 | ||
17184 | if (plt) | |
17185 | { | |
dc810e39 AM |
17186 | if ( !add_dynamic_entry (DT_PLTGOT, 0) |
17187 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
00a97672 RS |
17188 | || !add_dynamic_entry (DT_PLTREL, |
17189 | htab->use_rel ? DT_REL : DT_RELA) | |
dc810e39 | 17190 | || !add_dynamic_entry (DT_JMPREL, 0)) |
b34976b6 | 17191 | return FALSE; |
0855e32b | 17192 | |
5025eb7c AO |
17193 | if (htab->dt_tlsdesc_plt |
17194 | && (!add_dynamic_entry (DT_TLSDESC_PLT,0) | |
17195 | || !add_dynamic_entry (DT_TLSDESC_GOT,0))) | |
b38cadfb | 17196 | return FALSE; |
252b5132 RH |
17197 | } |
17198 | ||
17199 | if (relocs) | |
17200 | { | |
00a97672 RS |
17201 | if (htab->use_rel) |
17202 | { | |
17203 | if (!add_dynamic_entry (DT_REL, 0) | |
17204 | || !add_dynamic_entry (DT_RELSZ, 0) | |
17205 | || !add_dynamic_entry (DT_RELENT, RELOC_SIZE (htab))) | |
17206 | return FALSE; | |
17207 | } | |
17208 | else | |
17209 | { | |
17210 | if (!add_dynamic_entry (DT_RELA, 0) | |
17211 | || !add_dynamic_entry (DT_RELASZ, 0) | |
17212 | || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab))) | |
17213 | return FALSE; | |
17214 | } | |
252b5132 RH |
17215 | } |
17216 | ||
08d1f311 DJ |
17217 | /* If any dynamic relocs apply to a read-only section, |
17218 | then we need a DT_TEXTREL entry. */ | |
17219 | if ((info->flags & DF_TEXTREL) == 0) | |
63c1f59d | 17220 | elf_link_hash_traverse (&htab->root, maybe_set_textrel, info); |
08d1f311 | 17221 | |
99e4ae17 | 17222 | if ((info->flags & DF_TEXTREL) != 0) |
252b5132 | 17223 | { |
dc810e39 | 17224 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 17225 | return FALSE; |
252b5132 | 17226 | } |
7a2b07ff NS |
17227 | if (htab->vxworks_p |
17228 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) | |
17229 | return FALSE; | |
252b5132 | 17230 | } |
8532796c | 17231 | #undef add_dynamic_entry |
252b5132 | 17232 | |
b34976b6 | 17233 | return TRUE; |
252b5132 RH |
17234 | } |
17235 | ||
0855e32b NS |
17236 | /* Size sections even though they're not dynamic. We use it to setup |
17237 | _TLS_MODULE_BASE_, if needed. */ | |
17238 | ||
17239 | static bfd_boolean | |
17240 | elf32_arm_always_size_sections (bfd *output_bfd, | |
99059e56 | 17241 | struct bfd_link_info *info) |
0855e32b NS |
17242 | { |
17243 | asection *tls_sec; | |
cb10292c CL |
17244 | struct elf32_arm_link_hash_table *htab; |
17245 | ||
17246 | htab = elf32_arm_hash_table (info); | |
0855e32b | 17247 | |
0e1862bb | 17248 | if (bfd_link_relocatable (info)) |
0855e32b NS |
17249 | return TRUE; |
17250 | ||
17251 | tls_sec = elf_hash_table (info)->tls_sec; | |
17252 | ||
17253 | if (tls_sec) | |
17254 | { | |
17255 | struct elf_link_hash_entry *tlsbase; | |
17256 | ||
17257 | tlsbase = elf_link_hash_lookup | |
17258 | (elf_hash_table (info), "_TLS_MODULE_BASE_", TRUE, TRUE, FALSE); | |
17259 | ||
17260 | if (tlsbase) | |
99059e56 RM |
17261 | { |
17262 | struct bfd_link_hash_entry *bh = NULL; | |
0855e32b | 17263 | const struct elf_backend_data *bed |
99059e56 | 17264 | = get_elf_backend_data (output_bfd); |
0855e32b | 17265 | |
99059e56 | 17266 | if (!(_bfd_generic_link_add_one_symbol |
0855e32b NS |
17267 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, |
17268 | tls_sec, 0, NULL, FALSE, | |
17269 | bed->collect, &bh))) | |
17270 | return FALSE; | |
b38cadfb | 17271 | |
99059e56 RM |
17272 | tlsbase->type = STT_TLS; |
17273 | tlsbase = (struct elf_link_hash_entry *)bh; | |
17274 | tlsbase->def_regular = 1; | |
17275 | tlsbase->other = STV_HIDDEN; | |
17276 | (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE); | |
0855e32b NS |
17277 | } |
17278 | } | |
cb10292c CL |
17279 | |
17280 | if (htab->fdpic_p && !bfd_link_relocatable (info) | |
17281 | && !bfd_elf_stack_segment_size (output_bfd, info, | |
17282 | "__stacksize", DEFAULT_STACK_SIZE)) | |
17283 | return FALSE; | |
17284 | ||
0855e32b NS |
17285 | return TRUE; |
17286 | } | |
17287 | ||
252b5132 RH |
17288 | /* Finish up dynamic symbol handling. We set the contents of various |
17289 | dynamic sections here. */ | |
17290 | ||
b34976b6 | 17291 | static bfd_boolean |
906e58ca NC |
17292 | elf32_arm_finish_dynamic_symbol (bfd * output_bfd, |
17293 | struct bfd_link_info * info, | |
17294 | struct elf_link_hash_entry * h, | |
17295 | Elf_Internal_Sym * sym) | |
252b5132 | 17296 | { |
e5a52504 | 17297 | struct elf32_arm_link_hash_table *htab; |
b7693d02 | 17298 | struct elf32_arm_link_hash_entry *eh; |
252b5132 | 17299 | |
e5a52504 | 17300 | htab = elf32_arm_hash_table (info); |
4dfe6ac6 NC |
17301 | if (htab == NULL) |
17302 | return FALSE; | |
17303 | ||
b7693d02 | 17304 | eh = (struct elf32_arm_link_hash_entry *) h; |
252b5132 RH |
17305 | |
17306 | if (h->plt.offset != (bfd_vma) -1) | |
17307 | { | |
34e77a92 | 17308 | if (!eh->is_iplt) |
e5a52504 | 17309 | { |
34e77a92 | 17310 | BFD_ASSERT (h->dynindx != -1); |
57460bcf NC |
17311 | if (! elf32_arm_populate_plt_entry (output_bfd, info, &h->plt, &eh->plt, |
17312 | h->dynindx, 0)) | |
17313 | return FALSE; | |
e5a52504 | 17314 | } |
57e8b36a | 17315 | |
f5385ebf | 17316 | if (!h->def_regular) |
252b5132 RH |
17317 | { |
17318 | /* Mark the symbol as undefined, rather than as defined in | |
3a635617 | 17319 | the .plt section. */ |
252b5132 | 17320 | sym->st_shndx = SHN_UNDEF; |
3a635617 | 17321 | /* If the symbol is weak we need to clear the value. |
d982ba73 PB |
17322 | Otherwise, the PLT entry would provide a definition for |
17323 | the symbol even if the symbol wasn't defined anywhere, | |
3a635617 WN |
17324 | and so the symbol would never be NULL. Leave the value if |
17325 | there were any relocations where pointer equality matters | |
17326 | (this is a clue for the dynamic linker, to make function | |
17327 | pointer comparisons work between an application and shared | |
17328 | library). */ | |
97323ad1 | 17329 | if (!h->ref_regular_nonweak || !h->pointer_equality_needed) |
d982ba73 | 17330 | sym->st_value = 0; |
252b5132 | 17331 | } |
34e77a92 RS |
17332 | else if (eh->is_iplt && eh->plt.noncall_refcount != 0) |
17333 | { | |
17334 | /* At least one non-call relocation references this .iplt entry, | |
17335 | so the .iplt entry is the function's canonical address. */ | |
17336 | sym->st_info = ELF_ST_INFO (ELF_ST_BIND (sym->st_info), STT_FUNC); | |
39d911fc | 17337 | ARM_SET_SYM_BRANCH_TYPE (sym->st_target_internal, ST_BRANCH_TO_ARM); |
34e77a92 RS |
17338 | sym->st_shndx = (_bfd_elf_section_from_bfd_section |
17339 | (output_bfd, htab->root.iplt->output_section)); | |
17340 | sym->st_value = (h->plt.offset | |
17341 | + htab->root.iplt->output_section->vma | |
17342 | + htab->root.iplt->output_offset); | |
17343 | } | |
252b5132 RH |
17344 | } |
17345 | ||
f5385ebf | 17346 | if (h->needs_copy) |
252b5132 RH |
17347 | { |
17348 | asection * s; | |
947216bf | 17349 | Elf_Internal_Rela rel; |
252b5132 RH |
17350 | |
17351 | /* This symbol needs a copy reloc. Set it up. */ | |
252b5132 RH |
17352 | BFD_ASSERT (h->dynindx != -1 |
17353 | && (h->root.type == bfd_link_hash_defined | |
17354 | || h->root.type == bfd_link_hash_defweak)); | |
17355 | ||
00a97672 | 17356 | rel.r_addend = 0; |
252b5132 RH |
17357 | rel.r_offset = (h->root.u.def.value |
17358 | + h->root.u.def.section->output_section->vma | |
17359 | + h->root.u.def.section->output_offset); | |
17360 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY); | |
afbf7e8e | 17361 | if (h->root.u.def.section == htab->root.sdynrelro) |
5474d94f AM |
17362 | s = htab->root.sreldynrelro; |
17363 | else | |
17364 | s = htab->root.srelbss; | |
47beaa6a | 17365 | elf32_arm_add_dynreloc (output_bfd, info, s, &rel); |
252b5132 RH |
17366 | } |
17367 | ||
00a97672 | 17368 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks, |
fac7bd64 CL |
17369 | and for FDPIC, the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: |
17370 | it is relative to the ".got" section. */ | |
9637f6ef | 17371 | if (h == htab->root.hdynamic |
fac7bd64 | 17372 | || (!htab->fdpic_p && !htab->vxworks_p && h == htab->root.hgot)) |
252b5132 RH |
17373 | sym->st_shndx = SHN_ABS; |
17374 | ||
b34976b6 | 17375 | return TRUE; |
252b5132 RH |
17376 | } |
17377 | ||
0855e32b NS |
17378 | static void |
17379 | arm_put_trampoline (struct elf32_arm_link_hash_table *htab, bfd *output_bfd, | |
17380 | void *contents, | |
17381 | const unsigned long *template, unsigned count) | |
17382 | { | |
17383 | unsigned ix; | |
b38cadfb | 17384 | |
0855e32b NS |
17385 | for (ix = 0; ix != count; ix++) |
17386 | { | |
17387 | unsigned long insn = template[ix]; | |
17388 | ||
17389 | /* Emit mov pc,rx if bx is not permitted. */ | |
17390 | if (htab->fix_v4bx == 1 && (insn & 0x0ffffff0) == 0x012fff10) | |
17391 | insn = (insn & 0xf000000f) | 0x01a0f000; | |
17392 | put_arm_insn (htab, output_bfd, insn, (char *)contents + ix*4); | |
17393 | } | |
17394 | } | |
17395 | ||
99059e56 RM |
17396 | /* Install the special first PLT entry for elf32-arm-nacl. Unlike |
17397 | other variants, NaCl needs this entry in a static executable's | |
17398 | .iplt too. When we're handling that case, GOT_DISPLACEMENT is | |
17399 | zero. For .iplt really only the last bundle is useful, and .iplt | |
17400 | could have a shorter first entry, with each individual PLT entry's | |
17401 | relative branch calculated differently so it targets the last | |
17402 | bundle instead of the instruction before it (labelled .Lplt_tail | |
17403 | above). But it's simpler to keep the size and layout of PLT0 | |
17404 | consistent with the dynamic case, at the cost of some dead code at | |
17405 | the start of .iplt and the one dead store to the stack at the start | |
17406 | of .Lplt_tail. */ | |
17407 | static void | |
17408 | arm_nacl_put_plt0 (struct elf32_arm_link_hash_table *htab, bfd *output_bfd, | |
17409 | asection *plt, bfd_vma got_displacement) | |
17410 | { | |
17411 | unsigned int i; | |
17412 | ||
17413 | put_arm_insn (htab, output_bfd, | |
17414 | elf32_arm_nacl_plt0_entry[0] | |
17415 | | arm_movw_immediate (got_displacement), | |
17416 | plt->contents + 0); | |
17417 | put_arm_insn (htab, output_bfd, | |
17418 | elf32_arm_nacl_plt0_entry[1] | |
17419 | | arm_movt_immediate (got_displacement), | |
17420 | plt->contents + 4); | |
17421 | ||
17422 | for (i = 2; i < ARRAY_SIZE (elf32_arm_nacl_plt0_entry); ++i) | |
17423 | put_arm_insn (htab, output_bfd, | |
17424 | elf32_arm_nacl_plt0_entry[i], | |
17425 | plt->contents + (i * 4)); | |
17426 | } | |
17427 | ||
252b5132 RH |
17428 | /* Finish up the dynamic sections. */ |
17429 | ||
b34976b6 | 17430 | static bfd_boolean |
57e8b36a | 17431 | elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info) |
252b5132 RH |
17432 | { |
17433 | bfd * dynobj; | |
17434 | asection * sgot; | |
17435 | asection * sdyn; | |
4dfe6ac6 NC |
17436 | struct elf32_arm_link_hash_table *htab; |
17437 | ||
17438 | htab = elf32_arm_hash_table (info); | |
17439 | if (htab == NULL) | |
17440 | return FALSE; | |
252b5132 RH |
17441 | |
17442 | dynobj = elf_hash_table (info)->dynobj; | |
17443 | ||
362d30a1 | 17444 | sgot = htab->root.sgotplt; |
894891db NC |
17445 | /* A broken linker script might have discarded the dynamic sections. |
17446 | Catch this here so that we do not seg-fault later on. */ | |
17447 | if (sgot != NULL && bfd_is_abs_section (sgot->output_section)) | |
17448 | return FALSE; | |
3d4d4302 | 17449 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
252b5132 RH |
17450 | |
17451 | if (elf_hash_table (info)->dynamic_sections_created) | |
17452 | { | |
17453 | asection *splt; | |
17454 | Elf32_External_Dyn *dyncon, *dynconend; | |
17455 | ||
362d30a1 | 17456 | splt = htab->root.splt; |
24a1ba0f | 17457 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
cbc704f3 | 17458 | BFD_ASSERT (htab->symbian_p || sgot != NULL); |
252b5132 RH |
17459 | |
17460 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 17461 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
9b485d32 | 17462 | |
252b5132 RH |
17463 | for (; dyncon < dynconend; dyncon++) |
17464 | { | |
17465 | Elf_Internal_Dyn dyn; | |
17466 | const char * name; | |
17467 | asection * s; | |
17468 | ||
17469 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
17470 | ||
17471 | switch (dyn.d_tag) | |
17472 | { | |
229fcec5 MM |
17473 | unsigned int type; |
17474 | ||
252b5132 | 17475 | default: |
7a2b07ff NS |
17476 | if (htab->vxworks_p |
17477 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
17478 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
252b5132 RH |
17479 | break; |
17480 | ||
229fcec5 MM |
17481 | case DT_HASH: |
17482 | name = ".hash"; | |
17483 | goto get_vma_if_bpabi; | |
17484 | case DT_STRTAB: | |
17485 | name = ".dynstr"; | |
17486 | goto get_vma_if_bpabi; | |
17487 | case DT_SYMTAB: | |
17488 | name = ".dynsym"; | |
17489 | goto get_vma_if_bpabi; | |
c0042f5d MM |
17490 | case DT_VERSYM: |
17491 | name = ".gnu.version"; | |
17492 | goto get_vma_if_bpabi; | |
17493 | case DT_VERDEF: | |
17494 | name = ".gnu.version_d"; | |
17495 | goto get_vma_if_bpabi; | |
17496 | case DT_VERNEED: | |
17497 | name = ".gnu.version_r"; | |
17498 | goto get_vma_if_bpabi; | |
17499 | ||
252b5132 | 17500 | case DT_PLTGOT: |
4ade44b7 | 17501 | name = htab->symbian_p ? ".got" : ".got.plt"; |
252b5132 RH |
17502 | goto get_vma; |
17503 | case DT_JMPREL: | |
00a97672 | 17504 | name = RELOC_SECTION (htab, ".plt"); |
252b5132 | 17505 | get_vma: |
4ade44b7 | 17506 | s = bfd_get_linker_section (dynobj, name); |
05456594 NC |
17507 | if (s == NULL) |
17508 | { | |
4eca0228 | 17509 | _bfd_error_handler |
4ade44b7 | 17510 | (_("could not find section %s"), name); |
05456594 NC |
17511 | bfd_set_error (bfd_error_invalid_operation); |
17512 | return FALSE; | |
17513 | } | |
229fcec5 | 17514 | if (!htab->symbian_p) |
4ade44b7 | 17515 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
229fcec5 MM |
17516 | else |
17517 | /* In the BPABI, tags in the PT_DYNAMIC section point | |
17518 | at the file offset, not the memory address, for the | |
17519 | convenience of the post linker. */ | |
4ade44b7 | 17520 | dyn.d_un.d_ptr = s->output_section->filepos + s->output_offset; |
252b5132 RH |
17521 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
17522 | break; | |
17523 | ||
229fcec5 MM |
17524 | get_vma_if_bpabi: |
17525 | if (htab->symbian_p) | |
17526 | goto get_vma; | |
17527 | break; | |
17528 | ||
252b5132 | 17529 | case DT_PLTRELSZ: |
362d30a1 | 17530 | s = htab->root.srelplt; |
252b5132 | 17531 | BFD_ASSERT (s != NULL); |
eea6121a | 17532 | dyn.d_un.d_val = s->size; |
252b5132 RH |
17533 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
17534 | break; | |
906e58ca | 17535 | |
252b5132 | 17536 | case DT_RELSZ: |
00a97672 | 17537 | case DT_RELASZ: |
229fcec5 MM |
17538 | case DT_REL: |
17539 | case DT_RELA: | |
229fcec5 MM |
17540 | /* In the BPABI, the DT_REL tag must point at the file |
17541 | offset, not the VMA, of the first relocation | |
17542 | section. So, we use code similar to that in | |
17543 | elflink.c, but do not check for SHF_ALLOC on the | |
64f52338 AM |
17544 | relocation section, since relocation sections are |
17545 | never allocated under the BPABI. PLT relocs are also | |
17546 | included. */ | |
229fcec5 MM |
17547 | if (htab->symbian_p) |
17548 | { | |
17549 | unsigned int i; | |
17550 | type = ((dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ) | |
17551 | ? SHT_REL : SHT_RELA); | |
17552 | dyn.d_un.d_val = 0; | |
17553 | for (i = 1; i < elf_numsections (output_bfd); i++) | |
17554 | { | |
906e58ca | 17555 | Elf_Internal_Shdr *hdr |
229fcec5 MM |
17556 | = elf_elfsections (output_bfd)[i]; |
17557 | if (hdr->sh_type == type) | |
17558 | { | |
906e58ca | 17559 | if (dyn.d_tag == DT_RELSZ |
229fcec5 MM |
17560 | || dyn.d_tag == DT_RELASZ) |
17561 | dyn.d_un.d_val += hdr->sh_size; | |
de52dba4 AM |
17562 | else if ((ufile_ptr) hdr->sh_offset |
17563 | <= dyn.d_un.d_val - 1) | |
229fcec5 MM |
17564 | dyn.d_un.d_val = hdr->sh_offset; |
17565 | } | |
17566 | } | |
17567 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
17568 | } | |
252b5132 | 17569 | break; |
88f7bcd5 | 17570 | |
0855e32b | 17571 | case DT_TLSDESC_PLT: |
99059e56 | 17572 | s = htab->root.splt; |
0855e32b NS |
17573 | dyn.d_un.d_ptr = (s->output_section->vma + s->output_offset |
17574 | + htab->dt_tlsdesc_plt); | |
17575 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
17576 | break; | |
17577 | ||
17578 | case DT_TLSDESC_GOT: | |
99059e56 | 17579 | s = htab->root.sgot; |
0855e32b | 17580 | dyn.d_un.d_ptr = (s->output_section->vma + s->output_offset |
99059e56 | 17581 | + htab->dt_tlsdesc_got); |
0855e32b NS |
17582 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
17583 | break; | |
17584 | ||
88f7bcd5 NC |
17585 | /* Set the bottom bit of DT_INIT/FINI if the |
17586 | corresponding function is Thumb. */ | |
17587 | case DT_INIT: | |
17588 | name = info->init_function; | |
17589 | goto get_sym; | |
17590 | case DT_FINI: | |
17591 | name = info->fini_function; | |
17592 | get_sym: | |
17593 | /* If it wasn't set by elf_bfd_final_link | |
4cc11e76 | 17594 | then there is nothing to adjust. */ |
88f7bcd5 NC |
17595 | if (dyn.d_un.d_val != 0) |
17596 | { | |
17597 | struct elf_link_hash_entry * eh; | |
17598 | ||
17599 | eh = elf_link_hash_lookup (elf_hash_table (info), name, | |
b34976b6 | 17600 | FALSE, FALSE, TRUE); |
39d911fc TP |
17601 | if (eh != NULL |
17602 | && ARM_GET_SYM_BRANCH_TYPE (eh->target_internal) | |
17603 | == ST_BRANCH_TO_THUMB) | |
88f7bcd5 NC |
17604 | { |
17605 | dyn.d_un.d_val |= 1; | |
b34976b6 | 17606 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
88f7bcd5 NC |
17607 | } |
17608 | } | |
17609 | break; | |
252b5132 RH |
17610 | } |
17611 | } | |
17612 | ||
24a1ba0f | 17613 | /* Fill in the first entry in the procedure linkage table. */ |
4dfe6ac6 | 17614 | if (splt->size > 0 && htab->plt_header_size) |
f7a74f8c | 17615 | { |
00a97672 RS |
17616 | const bfd_vma *plt0_entry; |
17617 | bfd_vma got_address, plt_address, got_displacement; | |
17618 | ||
17619 | /* Calculate the addresses of the GOT and PLT. */ | |
17620 | got_address = sgot->output_section->vma + sgot->output_offset; | |
17621 | plt_address = splt->output_section->vma + splt->output_offset; | |
17622 | ||
17623 | if (htab->vxworks_p) | |
17624 | { | |
17625 | /* The VxWorks GOT is relocated by the dynamic linker. | |
17626 | Therefore, we must emit relocations rather than simply | |
17627 | computing the values now. */ | |
17628 | Elf_Internal_Rela rel; | |
17629 | ||
17630 | plt0_entry = elf32_arm_vxworks_exec_plt0_entry; | |
52ab56c2 PB |
17631 | put_arm_insn (htab, output_bfd, plt0_entry[0], |
17632 | splt->contents + 0); | |
17633 | put_arm_insn (htab, output_bfd, plt0_entry[1], | |
17634 | splt->contents + 4); | |
17635 | put_arm_insn (htab, output_bfd, plt0_entry[2], | |
17636 | splt->contents + 8); | |
00a97672 RS |
17637 | bfd_put_32 (output_bfd, got_address, splt->contents + 12); |
17638 | ||
8029a119 | 17639 | /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */ |
00a97672 RS |
17640 | rel.r_offset = plt_address + 12; |
17641 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); | |
17642 | rel.r_addend = 0; | |
17643 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, | |
17644 | htab->srelplt2->contents); | |
17645 | } | |
b38cadfb | 17646 | else if (htab->nacl_p) |
99059e56 RM |
17647 | arm_nacl_put_plt0 (htab, output_bfd, splt, |
17648 | got_address + 8 - (plt_address + 16)); | |
eed94f8f NC |
17649 | else if (using_thumb_only (htab)) |
17650 | { | |
17651 | got_displacement = got_address - (plt_address + 12); | |
17652 | ||
17653 | plt0_entry = elf32_thumb2_plt0_entry; | |
17654 | put_arm_insn (htab, output_bfd, plt0_entry[0], | |
17655 | splt->contents + 0); | |
17656 | put_arm_insn (htab, output_bfd, plt0_entry[1], | |
17657 | splt->contents + 4); | |
17658 | put_arm_insn (htab, output_bfd, plt0_entry[2], | |
17659 | splt->contents + 8); | |
17660 | ||
17661 | bfd_put_32 (output_bfd, got_displacement, splt->contents + 12); | |
17662 | } | |
00a97672 RS |
17663 | else |
17664 | { | |
17665 | got_displacement = got_address - (plt_address + 16); | |
17666 | ||
17667 | plt0_entry = elf32_arm_plt0_entry; | |
52ab56c2 PB |
17668 | put_arm_insn (htab, output_bfd, plt0_entry[0], |
17669 | splt->contents + 0); | |
17670 | put_arm_insn (htab, output_bfd, plt0_entry[1], | |
17671 | splt->contents + 4); | |
17672 | put_arm_insn (htab, output_bfd, plt0_entry[2], | |
17673 | splt->contents + 8); | |
17674 | put_arm_insn (htab, output_bfd, plt0_entry[3], | |
17675 | splt->contents + 12); | |
5e681ec4 | 17676 | |
5e681ec4 | 17677 | #ifdef FOUR_WORD_PLT |
00a97672 RS |
17678 | /* The displacement value goes in the otherwise-unused |
17679 | last word of the second entry. */ | |
17680 | bfd_put_32 (output_bfd, got_displacement, splt->contents + 28); | |
5e681ec4 | 17681 | #else |
00a97672 | 17682 | bfd_put_32 (output_bfd, got_displacement, splt->contents + 16); |
5e681ec4 | 17683 | #endif |
00a97672 | 17684 | } |
f7a74f8c | 17685 | } |
252b5132 RH |
17686 | |
17687 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
17688 | really seem like the right value. */ | |
74541ad4 AM |
17689 | if (splt->output_section->owner == output_bfd) |
17690 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; | |
00a97672 | 17691 | |
0855e32b NS |
17692 | if (htab->dt_tlsdesc_plt) |
17693 | { | |
17694 | bfd_vma got_address | |
17695 | = sgot->output_section->vma + sgot->output_offset; | |
17696 | bfd_vma gotplt_address = (htab->root.sgot->output_section->vma | |
17697 | + htab->root.sgot->output_offset); | |
17698 | bfd_vma plt_address | |
17699 | = splt->output_section->vma + splt->output_offset; | |
17700 | ||
b38cadfb | 17701 | arm_put_trampoline (htab, output_bfd, |
0855e32b NS |
17702 | splt->contents + htab->dt_tlsdesc_plt, |
17703 | dl_tlsdesc_lazy_trampoline, 6); | |
17704 | ||
17705 | bfd_put_32 (output_bfd, | |
17706 | gotplt_address + htab->dt_tlsdesc_got | |
17707 | - (plt_address + htab->dt_tlsdesc_plt) | |
17708 | - dl_tlsdesc_lazy_trampoline[6], | |
17709 | splt->contents + htab->dt_tlsdesc_plt + 24); | |
17710 | bfd_put_32 (output_bfd, | |
17711 | got_address - (plt_address + htab->dt_tlsdesc_plt) | |
17712 | - dl_tlsdesc_lazy_trampoline[7], | |
17713 | splt->contents + htab->dt_tlsdesc_plt + 24 + 4); | |
17714 | } | |
17715 | ||
17716 | if (htab->tls_trampoline) | |
17717 | { | |
b38cadfb | 17718 | arm_put_trampoline (htab, output_bfd, |
0855e32b NS |
17719 | splt->contents + htab->tls_trampoline, |
17720 | tls_trampoline, 3); | |
17721 | #ifdef FOUR_WORD_PLT | |
17722 | bfd_put_32 (output_bfd, 0x00000000, | |
17723 | splt->contents + htab->tls_trampoline + 12); | |
b38cadfb | 17724 | #endif |
0855e32b NS |
17725 | } |
17726 | ||
0e1862bb L |
17727 | if (htab->vxworks_p |
17728 | && !bfd_link_pic (info) | |
17729 | && htab->root.splt->size > 0) | |
00a97672 RS |
17730 | { |
17731 | /* Correct the .rel(a).plt.unloaded relocations. They will have | |
17732 | incorrect symbol indexes. */ | |
17733 | int num_plts; | |
eed62c48 | 17734 | unsigned char *p; |
00a97672 | 17735 | |
362d30a1 | 17736 | num_plts = ((htab->root.splt->size - htab->plt_header_size) |
00a97672 RS |
17737 | / htab->plt_entry_size); |
17738 | p = htab->srelplt2->contents + RELOC_SIZE (htab); | |
17739 | ||
17740 | for (; num_plts; num_plts--) | |
17741 | { | |
17742 | Elf_Internal_Rela rel; | |
17743 | ||
17744 | SWAP_RELOC_IN (htab) (output_bfd, p, &rel); | |
17745 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); | |
17746 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, p); | |
17747 | p += RELOC_SIZE (htab); | |
17748 | ||
17749 | SWAP_RELOC_IN (htab) (output_bfd, p, &rel); | |
17750 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32); | |
17751 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, p); | |
17752 | p += RELOC_SIZE (htab); | |
17753 | } | |
17754 | } | |
252b5132 RH |
17755 | } |
17756 | ||
99059e56 RM |
17757 | if (htab->nacl_p && htab->root.iplt != NULL && htab->root.iplt->size > 0) |
17758 | /* NaCl uses a special first entry in .iplt too. */ | |
17759 | arm_nacl_put_plt0 (htab, output_bfd, htab->root.iplt, 0); | |
17760 | ||
252b5132 | 17761 | /* Fill in the first three entries in the global offset table. */ |
229fcec5 | 17762 | if (sgot) |
252b5132 | 17763 | { |
229fcec5 MM |
17764 | if (sgot->size > 0) |
17765 | { | |
17766 | if (sdyn == NULL) | |
17767 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
17768 | else | |
17769 | bfd_put_32 (output_bfd, | |
17770 | sdyn->output_section->vma + sdyn->output_offset, | |
17771 | sgot->contents); | |
17772 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
17773 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
17774 | } | |
252b5132 | 17775 | |
229fcec5 MM |
17776 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; |
17777 | } | |
252b5132 | 17778 | |
e8b09b87 CL |
17779 | /* At the very end of the .rofixup section is a pointer to the GOT. */ |
17780 | if (htab->fdpic_p && htab->srofixup != NULL) | |
17781 | { | |
17782 | struct elf_link_hash_entry *hgot = htab->root.hgot; | |
17783 | ||
17784 | bfd_vma got_value = hgot->root.u.def.value | |
17785 | + hgot->root.u.def.section->output_section->vma | |
17786 | + hgot->root.u.def.section->output_offset; | |
17787 | ||
17788 | arm_elf_add_rofixup(output_bfd, htab->srofixup, got_value); | |
17789 | ||
17790 | /* Make sure we allocated and generated the same number of fixups. */ | |
17791 | BFD_ASSERT (htab->srofixup->reloc_count * 4 == htab->srofixup->size); | |
17792 | } | |
17793 | ||
b34976b6 | 17794 | return TRUE; |
252b5132 RH |
17795 | } |
17796 | ||
ba96a88f | 17797 | static void |
57e8b36a | 17798 | elf32_arm_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED) |
ba96a88f | 17799 | { |
9b485d32 | 17800 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ |
e489d0ae | 17801 | struct elf32_arm_link_hash_table *globals; |
ac4c9b04 | 17802 | struct elf_segment_map *m; |
ba96a88f NC |
17803 | |
17804 | i_ehdrp = elf_elfheader (abfd); | |
17805 | ||
94a3258f PB |
17806 | if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_UNKNOWN) |
17807 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_ARM; | |
17808 | else | |
7394f108 | 17809 | _bfd_elf_post_process_headers (abfd, link_info); |
ba96a88f | 17810 | i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION; |
e489d0ae | 17811 | |
93204d3a PB |
17812 | if (link_info) |
17813 | { | |
17814 | globals = elf32_arm_hash_table (link_info); | |
4dfe6ac6 | 17815 | if (globals != NULL && globals->byteswap_code) |
93204d3a | 17816 | i_ehdrp->e_flags |= EF_ARM_BE8; |
18a20338 CL |
17817 | |
17818 | if (globals->fdpic_p) | |
17819 | i_ehdrp->e_ident[EI_OSABI] |= ELFOSABI_ARM_FDPIC; | |
93204d3a | 17820 | } |
3bfcb652 NC |
17821 | |
17822 | if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_VER5 | |
17823 | && ((i_ehdrp->e_type == ET_DYN) || (i_ehdrp->e_type == ET_EXEC))) | |
17824 | { | |
17825 | int abi = bfd_elf_get_obj_attr_int (abfd, OBJ_ATTR_PROC, Tag_ABI_VFP_args); | |
5c294fee | 17826 | if (abi == AEABI_VFP_args_vfp) |
3bfcb652 NC |
17827 | i_ehdrp->e_flags |= EF_ARM_ABI_FLOAT_HARD; |
17828 | else | |
17829 | i_ehdrp->e_flags |= EF_ARM_ABI_FLOAT_SOFT; | |
17830 | } | |
ac4c9b04 MG |
17831 | |
17832 | /* Scan segment to set p_flags attribute if it contains only sections with | |
f0728ee3 | 17833 | SHF_ARM_PURECODE flag. */ |
ac4c9b04 MG |
17834 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
17835 | { | |
17836 | unsigned int j; | |
17837 | ||
17838 | if (m->count == 0) | |
17839 | continue; | |
17840 | for (j = 0; j < m->count; j++) | |
17841 | { | |
f0728ee3 | 17842 | if (!(elf_section_flags (m->sections[j]) & SHF_ARM_PURECODE)) |
ac4c9b04 MG |
17843 | break; |
17844 | } | |
17845 | if (j == m->count) | |
17846 | { | |
17847 | m->p_flags = PF_X; | |
17848 | m->p_flags_valid = 1; | |
17849 | } | |
17850 | } | |
ba96a88f NC |
17851 | } |
17852 | ||
99e4ae17 | 17853 | static enum elf_reloc_type_class |
7e612e98 AM |
17854 | elf32_arm_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
17855 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
17856 | const Elf_Internal_Rela *rela) | |
99e4ae17 | 17857 | { |
f51e552e | 17858 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
99e4ae17 AJ |
17859 | { |
17860 | case R_ARM_RELATIVE: | |
17861 | return reloc_class_relative; | |
17862 | case R_ARM_JUMP_SLOT: | |
17863 | return reloc_class_plt; | |
17864 | case R_ARM_COPY: | |
17865 | return reloc_class_copy; | |
109575d7 JW |
17866 | case R_ARM_IRELATIVE: |
17867 | return reloc_class_ifunc; | |
99e4ae17 AJ |
17868 | default: |
17869 | return reloc_class_normal; | |
17870 | } | |
17871 | } | |
17872 | ||
e489d0ae | 17873 | static void |
57e8b36a | 17874 | elf32_arm_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) |
e16bb312 | 17875 | { |
5a6c6817 | 17876 | bfd_arm_update_notes (abfd, ARM_NOTE_SECTION); |
e16bb312 NC |
17877 | } |
17878 | ||
40a18ebd NC |
17879 | /* Return TRUE if this is an unwinding table entry. */ |
17880 | ||
17881 | static bfd_boolean | |
17882 | is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name) | |
17883 | { | |
0112cd26 NC |
17884 | return (CONST_STRNEQ (name, ELF_STRING_ARM_unwind) |
17885 | || CONST_STRNEQ (name, ELF_STRING_ARM_unwind_once)); | |
40a18ebd NC |
17886 | } |
17887 | ||
17888 | ||
17889 | /* Set the type and flags for an ARM section. We do this by | |
17890 | the section name, which is a hack, but ought to work. */ | |
17891 | ||
17892 | static bfd_boolean | |
17893 | elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec) | |
17894 | { | |
17895 | const char * name; | |
17896 | ||
17897 | name = bfd_get_section_name (abfd, sec); | |
17898 | ||
17899 | if (is_arm_elf_unwind_section_name (abfd, name)) | |
17900 | { | |
17901 | hdr->sh_type = SHT_ARM_EXIDX; | |
17902 | hdr->sh_flags |= SHF_LINK_ORDER; | |
17903 | } | |
ac4c9b04 | 17904 | |
f0728ee3 AV |
17905 | if (sec->flags & SEC_ELF_PURECODE) |
17906 | hdr->sh_flags |= SHF_ARM_PURECODE; | |
ac4c9b04 | 17907 | |
40a18ebd NC |
17908 | return TRUE; |
17909 | } | |
17910 | ||
6dc132d9 L |
17911 | /* Handle an ARM specific section when reading an object file. This is |
17912 | called when bfd_section_from_shdr finds a section with an unknown | |
17913 | type. */ | |
40a18ebd NC |
17914 | |
17915 | static bfd_boolean | |
17916 | elf32_arm_section_from_shdr (bfd *abfd, | |
17917 | Elf_Internal_Shdr * hdr, | |
6dc132d9 L |
17918 | const char *name, |
17919 | int shindex) | |
40a18ebd NC |
17920 | { |
17921 | /* There ought to be a place to keep ELF backend specific flags, but | |
17922 | at the moment there isn't one. We just keep track of the | |
17923 | sections by their name, instead. Fortunately, the ABI gives | |
17924 | names for all the ARM specific sections, so we will probably get | |
17925 | away with this. */ | |
17926 | switch (hdr->sh_type) | |
17927 | { | |
17928 | case SHT_ARM_EXIDX: | |
0951f019 RE |
17929 | case SHT_ARM_PREEMPTMAP: |
17930 | case SHT_ARM_ATTRIBUTES: | |
40a18ebd NC |
17931 | break; |
17932 | ||
17933 | default: | |
17934 | return FALSE; | |
17935 | } | |
17936 | ||
6dc132d9 | 17937 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
40a18ebd NC |
17938 | return FALSE; |
17939 | ||
17940 | return TRUE; | |
17941 | } | |
e489d0ae | 17942 | |
44444f50 NC |
17943 | static _arm_elf_section_data * |
17944 | get_arm_elf_section_data (asection * sec) | |
17945 | { | |
47b2e99c JZ |
17946 | if (sec && sec->owner && is_arm_elf (sec->owner)) |
17947 | return elf32_arm_section_data (sec); | |
44444f50 NC |
17948 | else |
17949 | return NULL; | |
8e3de13a NC |
17950 | } |
17951 | ||
4e617b1e PB |
17952 | typedef struct |
17953 | { | |
57402f1e | 17954 | void *flaginfo; |
4e617b1e | 17955 | struct bfd_link_info *info; |
91a5743d PB |
17956 | asection *sec; |
17957 | int sec_shndx; | |
6e0b88f1 AM |
17958 | int (*func) (void *, const char *, Elf_Internal_Sym *, |
17959 | asection *, struct elf_link_hash_entry *); | |
4e617b1e PB |
17960 | } output_arch_syminfo; |
17961 | ||
17962 | enum map_symbol_type | |
17963 | { | |
17964 | ARM_MAP_ARM, | |
17965 | ARM_MAP_THUMB, | |
17966 | ARM_MAP_DATA | |
17967 | }; | |
17968 | ||
17969 | ||
7413f23f | 17970 | /* Output a single mapping symbol. */ |
4e617b1e PB |
17971 | |
17972 | static bfd_boolean | |
7413f23f DJ |
17973 | elf32_arm_output_map_sym (output_arch_syminfo *osi, |
17974 | enum map_symbol_type type, | |
17975 | bfd_vma offset) | |
4e617b1e PB |
17976 | { |
17977 | static const char *names[3] = {"$a", "$t", "$d"}; | |
4e617b1e PB |
17978 | Elf_Internal_Sym sym; |
17979 | ||
91a5743d PB |
17980 | sym.st_value = osi->sec->output_section->vma |
17981 | + osi->sec->output_offset | |
17982 | + offset; | |
4e617b1e PB |
17983 | sym.st_size = 0; |
17984 | sym.st_other = 0; | |
17985 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
91a5743d | 17986 | sym.st_shndx = osi->sec_shndx; |
35fc36a8 | 17987 | sym.st_target_internal = 0; |
fe33d2fa | 17988 | elf32_arm_section_map_add (osi->sec, names[type][1], offset); |
57402f1e | 17989 | return osi->func (osi->flaginfo, names[type], &sym, osi->sec, NULL) == 1; |
4e617b1e PB |
17990 | } |
17991 | ||
34e77a92 RS |
17992 | /* Output mapping symbols for the PLT entry described by ROOT_PLT and ARM_PLT. |
17993 | IS_IPLT_ENTRY_P says whether the PLT is in .iplt rather than .plt. */ | |
4e617b1e PB |
17994 | |
17995 | static bfd_boolean | |
34e77a92 RS |
17996 | elf32_arm_output_plt_map_1 (output_arch_syminfo *osi, |
17997 | bfd_boolean is_iplt_entry_p, | |
17998 | union gotplt_union *root_plt, | |
17999 | struct arm_plt_info *arm_plt) | |
4e617b1e | 18000 | { |
4e617b1e | 18001 | struct elf32_arm_link_hash_table *htab; |
34e77a92 | 18002 | bfd_vma addr, plt_header_size; |
4e617b1e | 18003 | |
34e77a92 | 18004 | if (root_plt->offset == (bfd_vma) -1) |
4e617b1e PB |
18005 | return TRUE; |
18006 | ||
4dfe6ac6 NC |
18007 | htab = elf32_arm_hash_table (osi->info); |
18008 | if (htab == NULL) | |
18009 | return FALSE; | |
18010 | ||
34e77a92 RS |
18011 | if (is_iplt_entry_p) |
18012 | { | |
18013 | osi->sec = htab->root.iplt; | |
18014 | plt_header_size = 0; | |
18015 | } | |
18016 | else | |
18017 | { | |
18018 | osi->sec = htab->root.splt; | |
18019 | plt_header_size = htab->plt_header_size; | |
18020 | } | |
18021 | osi->sec_shndx = (_bfd_elf_section_from_bfd_section | |
18022 | (osi->info->output_bfd, osi->sec->output_section)); | |
18023 | ||
18024 | addr = root_plt->offset & -2; | |
4e617b1e PB |
18025 | if (htab->symbian_p) |
18026 | { | |
7413f23f | 18027 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr)) |
4e617b1e | 18028 | return FALSE; |
7413f23f | 18029 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 4)) |
4e617b1e PB |
18030 | return FALSE; |
18031 | } | |
18032 | else if (htab->vxworks_p) | |
18033 | { | |
7413f23f | 18034 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr)) |
4e617b1e | 18035 | return FALSE; |
7413f23f | 18036 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 8)) |
4e617b1e | 18037 | return FALSE; |
7413f23f | 18038 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr + 12)) |
4e617b1e | 18039 | return FALSE; |
7413f23f | 18040 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 20)) |
4e617b1e PB |
18041 | return FALSE; |
18042 | } | |
b38cadfb NC |
18043 | else if (htab->nacl_p) |
18044 | { | |
18045 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr)) | |
18046 | return FALSE; | |
18047 | } | |
7801f98f CL |
18048 | else if (htab->fdpic_p) |
18049 | { | |
59029f57 CL |
18050 | enum map_symbol_type type = using_thumb_only(htab) |
18051 | ? ARM_MAP_THUMB | |
18052 | : ARM_MAP_ARM; | |
18053 | ||
7801f98f | 18054 | if (elf32_arm_plt_needs_thumb_stub_p (osi->info, arm_plt)) |
4b24dd1a AM |
18055 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_THUMB, addr - 4)) |
18056 | return FALSE; | |
59029f57 | 18057 | if (!elf32_arm_output_map_sym (osi, type, addr)) |
4b24dd1a | 18058 | return FALSE; |
7801f98f | 18059 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 16)) |
4b24dd1a | 18060 | return FALSE; |
7801f98f | 18061 | if (htab->plt_entry_size == 4 * ARRAY_SIZE(elf32_arm_fdpic_plt_entry)) |
4b24dd1a AM |
18062 | if (!elf32_arm_output_map_sym (osi, type, addr + 24)) |
18063 | return FALSE; | |
7801f98f | 18064 | } |
eed94f8f NC |
18065 | else if (using_thumb_only (htab)) |
18066 | { | |
18067 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_THUMB, addr)) | |
18068 | return FALSE; | |
6a631e86 | 18069 | } |
4e617b1e PB |
18070 | else |
18071 | { | |
34e77a92 | 18072 | bfd_boolean thumb_stub_p; |
bd97cb95 | 18073 | |
34e77a92 RS |
18074 | thumb_stub_p = elf32_arm_plt_needs_thumb_stub_p (osi->info, arm_plt); |
18075 | if (thumb_stub_p) | |
4e617b1e | 18076 | { |
7413f23f | 18077 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_THUMB, addr - 4)) |
4e617b1e PB |
18078 | return FALSE; |
18079 | } | |
18080 | #ifdef FOUR_WORD_PLT | |
7413f23f | 18081 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr)) |
4e617b1e | 18082 | return FALSE; |
7413f23f | 18083 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 12)) |
4e617b1e PB |
18084 | return FALSE; |
18085 | #else | |
906e58ca | 18086 | /* A three-word PLT with no Thumb thunk contains only Arm code, |
4e617b1e PB |
18087 | so only need to output a mapping symbol for the first PLT entry and |
18088 | entries with thumb thunks. */ | |
34e77a92 | 18089 | if (thumb_stub_p || addr == plt_header_size) |
4e617b1e | 18090 | { |
7413f23f | 18091 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr)) |
4e617b1e PB |
18092 | return FALSE; |
18093 | } | |
18094 | #endif | |
18095 | } | |
18096 | ||
18097 | return TRUE; | |
18098 | } | |
18099 | ||
34e77a92 RS |
18100 | /* Output mapping symbols for PLT entries associated with H. */ |
18101 | ||
18102 | static bfd_boolean | |
18103 | elf32_arm_output_plt_map (struct elf_link_hash_entry *h, void *inf) | |
18104 | { | |
18105 | output_arch_syminfo *osi = (output_arch_syminfo *) inf; | |
18106 | struct elf32_arm_link_hash_entry *eh; | |
18107 | ||
18108 | if (h->root.type == bfd_link_hash_indirect) | |
18109 | return TRUE; | |
18110 | ||
18111 | if (h->root.type == bfd_link_hash_warning) | |
18112 | /* When warning symbols are created, they **replace** the "real" | |
18113 | entry in the hash table, thus we never get to see the real | |
18114 | symbol in a hash traversal. So look at it now. */ | |
18115 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
18116 | ||
18117 | eh = (struct elf32_arm_link_hash_entry *) h; | |
18118 | return elf32_arm_output_plt_map_1 (osi, SYMBOL_CALLS_LOCAL (osi->info, h), | |
18119 | &h->plt, &eh->plt); | |
18120 | } | |
18121 | ||
4f4faa4d TP |
18122 | /* Bind a veneered symbol to its veneer identified by its hash entry |
18123 | STUB_ENTRY. The veneered location thus loose its symbol. */ | |
18124 | ||
18125 | static void | |
18126 | arm_stub_claim_sym (struct elf32_arm_stub_hash_entry *stub_entry) | |
18127 | { | |
18128 | struct elf32_arm_link_hash_entry *hash = stub_entry->h; | |
18129 | ||
18130 | BFD_ASSERT (hash); | |
18131 | hash->root.root.u.def.section = stub_entry->stub_sec; | |
18132 | hash->root.root.u.def.value = stub_entry->stub_offset; | |
18133 | hash->root.size = stub_entry->stub_size; | |
18134 | } | |
18135 | ||
7413f23f DJ |
18136 | /* Output a single local symbol for a generated stub. */ |
18137 | ||
18138 | static bfd_boolean | |
18139 | elf32_arm_output_stub_sym (output_arch_syminfo *osi, const char *name, | |
18140 | bfd_vma offset, bfd_vma size) | |
18141 | { | |
7413f23f DJ |
18142 | Elf_Internal_Sym sym; |
18143 | ||
7413f23f DJ |
18144 | sym.st_value = osi->sec->output_section->vma |
18145 | + osi->sec->output_offset | |
18146 | + offset; | |
18147 | sym.st_size = size; | |
18148 | sym.st_other = 0; | |
18149 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
18150 | sym.st_shndx = osi->sec_shndx; | |
35fc36a8 | 18151 | sym.st_target_internal = 0; |
57402f1e | 18152 | return osi->func (osi->flaginfo, name, &sym, osi->sec, NULL) == 1; |
7413f23f | 18153 | } |
4e617b1e | 18154 | |
da5938a2 | 18155 | static bfd_boolean |
8029a119 NC |
18156 | arm_map_one_stub (struct bfd_hash_entry * gen_entry, |
18157 | void * in_arg) | |
da5938a2 NC |
18158 | { |
18159 | struct elf32_arm_stub_hash_entry *stub_entry; | |
da5938a2 NC |
18160 | asection *stub_sec; |
18161 | bfd_vma addr; | |
7413f23f | 18162 | char *stub_name; |
9a008db3 | 18163 | output_arch_syminfo *osi; |
d3ce72d0 | 18164 | const insn_sequence *template_sequence; |
461a49ca DJ |
18165 | enum stub_insn_type prev_type; |
18166 | int size; | |
18167 | int i; | |
18168 | enum map_symbol_type sym_type; | |
da5938a2 NC |
18169 | |
18170 | /* Massage our args to the form they really have. */ | |
18171 | stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry; | |
9a008db3 | 18172 | osi = (output_arch_syminfo *) in_arg; |
da5938a2 | 18173 | |
da5938a2 NC |
18174 | stub_sec = stub_entry->stub_sec; |
18175 | ||
18176 | /* Ensure this stub is attached to the current section being | |
7413f23f | 18177 | processed. */ |
da5938a2 NC |
18178 | if (stub_sec != osi->sec) |
18179 | return TRUE; | |
18180 | ||
7413f23f | 18181 | addr = (bfd_vma) stub_entry->stub_offset; |
d3ce72d0 | 18182 | template_sequence = stub_entry->stub_template; |
4f4faa4d TP |
18183 | |
18184 | if (arm_stub_sym_claimed (stub_entry->stub_type)) | |
18185 | arm_stub_claim_sym (stub_entry); | |
18186 | else | |
7413f23f | 18187 | { |
4f4faa4d TP |
18188 | stub_name = stub_entry->output_name; |
18189 | switch (template_sequence[0].type) | |
18190 | { | |
18191 | case ARM_TYPE: | |
18192 | if (!elf32_arm_output_stub_sym (osi, stub_name, addr, | |
18193 | stub_entry->stub_size)) | |
18194 | return FALSE; | |
18195 | break; | |
18196 | case THUMB16_TYPE: | |
18197 | case THUMB32_TYPE: | |
18198 | if (!elf32_arm_output_stub_sym (osi, stub_name, addr | 1, | |
18199 | stub_entry->stub_size)) | |
18200 | return FALSE; | |
18201 | break; | |
18202 | default: | |
18203 | BFD_FAIL (); | |
18204 | return 0; | |
18205 | } | |
7413f23f | 18206 | } |
da5938a2 | 18207 | |
461a49ca DJ |
18208 | prev_type = DATA_TYPE; |
18209 | size = 0; | |
18210 | for (i = 0; i < stub_entry->stub_template_size; i++) | |
18211 | { | |
d3ce72d0 | 18212 | switch (template_sequence[i].type) |
461a49ca DJ |
18213 | { |
18214 | case ARM_TYPE: | |
18215 | sym_type = ARM_MAP_ARM; | |
18216 | break; | |
18217 | ||
18218 | case THUMB16_TYPE: | |
48229727 | 18219 | case THUMB32_TYPE: |
461a49ca DJ |
18220 | sym_type = ARM_MAP_THUMB; |
18221 | break; | |
18222 | ||
18223 | case DATA_TYPE: | |
18224 | sym_type = ARM_MAP_DATA; | |
18225 | break; | |
18226 | ||
18227 | default: | |
18228 | BFD_FAIL (); | |
4e31c731 | 18229 | return FALSE; |
461a49ca DJ |
18230 | } |
18231 | ||
d3ce72d0 | 18232 | if (template_sequence[i].type != prev_type) |
461a49ca | 18233 | { |
d3ce72d0 | 18234 | prev_type = template_sequence[i].type; |
461a49ca DJ |
18235 | if (!elf32_arm_output_map_sym (osi, sym_type, addr + size)) |
18236 | return FALSE; | |
18237 | } | |
18238 | ||
d3ce72d0 | 18239 | switch (template_sequence[i].type) |
461a49ca DJ |
18240 | { |
18241 | case ARM_TYPE: | |
48229727 | 18242 | case THUMB32_TYPE: |
461a49ca DJ |
18243 | size += 4; |
18244 | break; | |
18245 | ||
18246 | case THUMB16_TYPE: | |
18247 | size += 2; | |
18248 | break; | |
18249 | ||
18250 | case DATA_TYPE: | |
18251 | size += 4; | |
18252 | break; | |
18253 | ||
18254 | default: | |
18255 | BFD_FAIL (); | |
4e31c731 | 18256 | return FALSE; |
461a49ca DJ |
18257 | } |
18258 | } | |
18259 | ||
da5938a2 NC |
18260 | return TRUE; |
18261 | } | |
18262 | ||
33811162 DG |
18263 | /* Output mapping symbols for linker generated sections, |
18264 | and for those data-only sections that do not have a | |
18265 | $d. */ | |
4e617b1e PB |
18266 | |
18267 | static bfd_boolean | |
18268 | elf32_arm_output_arch_local_syms (bfd *output_bfd, | |
906e58ca | 18269 | struct bfd_link_info *info, |
57402f1e | 18270 | void *flaginfo, |
6e0b88f1 AM |
18271 | int (*func) (void *, const char *, |
18272 | Elf_Internal_Sym *, | |
18273 | asection *, | |
18274 | struct elf_link_hash_entry *)) | |
4e617b1e PB |
18275 | { |
18276 | output_arch_syminfo osi; | |
18277 | struct elf32_arm_link_hash_table *htab; | |
91a5743d PB |
18278 | bfd_vma offset; |
18279 | bfd_size_type size; | |
33811162 | 18280 | bfd *input_bfd; |
4e617b1e PB |
18281 | |
18282 | htab = elf32_arm_hash_table (info); | |
4dfe6ac6 NC |
18283 | if (htab == NULL) |
18284 | return FALSE; | |
18285 | ||
906e58ca | 18286 | check_use_blx (htab); |
91a5743d | 18287 | |
57402f1e | 18288 | osi.flaginfo = flaginfo; |
4e617b1e PB |
18289 | osi.info = info; |
18290 | osi.func = func; | |
906e58ca | 18291 | |
33811162 DG |
18292 | /* Add a $d mapping symbol to data-only sections that |
18293 | don't have any mapping symbol. This may result in (harmless) redundant | |
18294 | mapping symbols. */ | |
18295 | for (input_bfd = info->input_bfds; | |
18296 | input_bfd != NULL; | |
c72f2fb2 | 18297 | input_bfd = input_bfd->link.next) |
33811162 DG |
18298 | { |
18299 | if ((input_bfd->flags & (BFD_LINKER_CREATED | HAS_SYMS)) == HAS_SYMS) | |
18300 | for (osi.sec = input_bfd->sections; | |
18301 | osi.sec != NULL; | |
18302 | osi.sec = osi.sec->next) | |
18303 | { | |
18304 | if (osi.sec->output_section != NULL | |
f7dd8c79 DJ |
18305 | && ((osi.sec->output_section->flags & (SEC_ALLOC | SEC_CODE)) |
18306 | != 0) | |
33811162 DG |
18307 | && (osi.sec->flags & (SEC_HAS_CONTENTS | SEC_LINKER_CREATED)) |
18308 | == SEC_HAS_CONTENTS | |
18309 | && get_arm_elf_section_data (osi.sec) != NULL | |
501abfe0 | 18310 | && get_arm_elf_section_data (osi.sec)->mapcount == 0 |
7d500b83 CL |
18311 | && osi.sec->size > 0 |
18312 | && (osi.sec->flags & SEC_EXCLUDE) == 0) | |
33811162 DG |
18313 | { |
18314 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
18315 | (output_bfd, osi.sec->output_section); | |
18316 | if (osi.sec_shndx != (int)SHN_BAD) | |
18317 | elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 0); | |
18318 | } | |
18319 | } | |
18320 | } | |
18321 | ||
91a5743d PB |
18322 | /* ARM->Thumb glue. */ |
18323 | if (htab->arm_glue_size > 0) | |
18324 | { | |
3d4d4302 AM |
18325 | osi.sec = bfd_get_linker_section (htab->bfd_of_glue_owner, |
18326 | ARM2THUMB_GLUE_SECTION_NAME); | |
91a5743d PB |
18327 | |
18328 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
18329 | (output_bfd, osi.sec->output_section); | |
0e1862bb | 18330 | if (bfd_link_pic (info) || htab->root.is_relocatable_executable |
91a5743d PB |
18331 | || htab->pic_veneer) |
18332 | size = ARM2THUMB_PIC_GLUE_SIZE; | |
18333 | else if (htab->use_blx) | |
18334 | size = ARM2THUMB_V5_STATIC_GLUE_SIZE; | |
18335 | else | |
18336 | size = ARM2THUMB_STATIC_GLUE_SIZE; | |
4e617b1e | 18337 | |
91a5743d PB |
18338 | for (offset = 0; offset < htab->arm_glue_size; offset += size) |
18339 | { | |
7413f23f DJ |
18340 | elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, offset); |
18341 | elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, offset + size - 4); | |
91a5743d PB |
18342 | } |
18343 | } | |
18344 | ||
18345 | /* Thumb->ARM glue. */ | |
18346 | if (htab->thumb_glue_size > 0) | |
18347 | { | |
3d4d4302 AM |
18348 | osi.sec = bfd_get_linker_section (htab->bfd_of_glue_owner, |
18349 | THUMB2ARM_GLUE_SECTION_NAME); | |
91a5743d PB |
18350 | |
18351 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
18352 | (output_bfd, osi.sec->output_section); | |
18353 | size = THUMB2ARM_GLUE_SIZE; | |
18354 | ||
18355 | for (offset = 0; offset < htab->thumb_glue_size; offset += size) | |
18356 | { | |
7413f23f DJ |
18357 | elf32_arm_output_map_sym (&osi, ARM_MAP_THUMB, offset); |
18358 | elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, offset + 4); | |
91a5743d PB |
18359 | } |
18360 | } | |
18361 | ||
845b51d6 PB |
18362 | /* ARMv4 BX veneers. */ |
18363 | if (htab->bx_glue_size > 0) | |
18364 | { | |
3d4d4302 AM |
18365 | osi.sec = bfd_get_linker_section (htab->bfd_of_glue_owner, |
18366 | ARM_BX_GLUE_SECTION_NAME); | |
845b51d6 PB |
18367 | |
18368 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
18369 | (output_bfd, osi.sec->output_section); | |
18370 | ||
7413f23f | 18371 | elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0); |
845b51d6 PB |
18372 | } |
18373 | ||
8029a119 NC |
18374 | /* Long calls stubs. */ |
18375 | if (htab->stub_bfd && htab->stub_bfd->sections) | |
18376 | { | |
da5938a2 | 18377 | asection* stub_sec; |
8029a119 | 18378 | |
da5938a2 NC |
18379 | for (stub_sec = htab->stub_bfd->sections; |
18380 | stub_sec != NULL; | |
8029a119 NC |
18381 | stub_sec = stub_sec->next) |
18382 | { | |
18383 | /* Ignore non-stub sections. */ | |
18384 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
18385 | continue; | |
da5938a2 | 18386 | |
8029a119 | 18387 | osi.sec = stub_sec; |
da5938a2 | 18388 | |
8029a119 NC |
18389 | osi.sec_shndx = _bfd_elf_section_from_bfd_section |
18390 | (output_bfd, osi.sec->output_section); | |
da5938a2 | 18391 | |
8029a119 NC |
18392 | bfd_hash_traverse (&htab->stub_hash_table, arm_map_one_stub, &osi); |
18393 | } | |
18394 | } | |
da5938a2 | 18395 | |
91a5743d | 18396 | /* Finally, output mapping symbols for the PLT. */ |
34e77a92 | 18397 | if (htab->root.splt && htab->root.splt->size > 0) |
4e617b1e | 18398 | { |
34e77a92 RS |
18399 | osi.sec = htab->root.splt; |
18400 | osi.sec_shndx = (_bfd_elf_section_from_bfd_section | |
18401 | (output_bfd, osi.sec->output_section)); | |
18402 | ||
18403 | /* Output mapping symbols for the plt header. SymbianOS does not have a | |
18404 | plt header. */ | |
18405 | if (htab->vxworks_p) | |
18406 | { | |
18407 | /* VxWorks shared libraries have no PLT header. */ | |
0e1862bb | 18408 | if (!bfd_link_pic (info)) |
34e77a92 RS |
18409 | { |
18410 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0)) | |
18411 | return FALSE; | |
18412 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 12)) | |
18413 | return FALSE; | |
18414 | } | |
18415 | } | |
b38cadfb NC |
18416 | else if (htab->nacl_p) |
18417 | { | |
18418 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0)) | |
18419 | return FALSE; | |
18420 | } | |
59029f57 | 18421 | else if (using_thumb_only (htab) && !htab->fdpic_p) |
eed94f8f NC |
18422 | { |
18423 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_THUMB, 0)) | |
18424 | return FALSE; | |
18425 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 12)) | |
18426 | return FALSE; | |
18427 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_THUMB, 16)) | |
18428 | return FALSE; | |
18429 | } | |
e8b09b87 | 18430 | else if (!htab->symbian_p && !htab->fdpic_p) |
4e617b1e | 18431 | { |
7413f23f | 18432 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0)) |
4e617b1e | 18433 | return FALSE; |
34e77a92 RS |
18434 | #ifndef FOUR_WORD_PLT |
18435 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 16)) | |
4e617b1e | 18436 | return FALSE; |
34e77a92 | 18437 | #endif |
4e617b1e PB |
18438 | } |
18439 | } | |
99059e56 RM |
18440 | if (htab->nacl_p && htab->root.iplt && htab->root.iplt->size > 0) |
18441 | { | |
18442 | /* NaCl uses a special first entry in .iplt too. */ | |
18443 | osi.sec = htab->root.iplt; | |
18444 | osi.sec_shndx = (_bfd_elf_section_from_bfd_section | |
18445 | (output_bfd, osi.sec->output_section)); | |
18446 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0)) | |
18447 | return FALSE; | |
18448 | } | |
34e77a92 RS |
18449 | if ((htab->root.splt && htab->root.splt->size > 0) |
18450 | || (htab->root.iplt && htab->root.iplt->size > 0)) | |
4e617b1e | 18451 | { |
34e77a92 RS |
18452 | elf_link_hash_traverse (&htab->root, elf32_arm_output_plt_map, &osi); |
18453 | for (input_bfd = info->input_bfds; | |
18454 | input_bfd != NULL; | |
c72f2fb2 | 18455 | input_bfd = input_bfd->link.next) |
34e77a92 RS |
18456 | { |
18457 | struct arm_local_iplt_info **local_iplt; | |
18458 | unsigned int i, num_syms; | |
4e617b1e | 18459 | |
34e77a92 RS |
18460 | local_iplt = elf32_arm_local_iplt (input_bfd); |
18461 | if (local_iplt != NULL) | |
18462 | { | |
18463 | num_syms = elf_symtab_hdr (input_bfd).sh_info; | |
18464 | for (i = 0; i < num_syms; i++) | |
18465 | if (local_iplt[i] != NULL | |
18466 | && !elf32_arm_output_plt_map_1 (&osi, TRUE, | |
18467 | &local_iplt[i]->root, | |
18468 | &local_iplt[i]->arm)) | |
18469 | return FALSE; | |
18470 | } | |
18471 | } | |
18472 | } | |
0855e32b NS |
18473 | if (htab->dt_tlsdesc_plt != 0) |
18474 | { | |
18475 | /* Mapping symbols for the lazy tls trampoline. */ | |
18476 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, htab->dt_tlsdesc_plt)) | |
18477 | return FALSE; | |
b38cadfb | 18478 | |
0855e32b NS |
18479 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, |
18480 | htab->dt_tlsdesc_plt + 24)) | |
18481 | return FALSE; | |
18482 | } | |
18483 | if (htab->tls_trampoline != 0) | |
18484 | { | |
18485 | /* Mapping symbols for the tls trampoline. */ | |
18486 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, htab->tls_trampoline)) | |
18487 | return FALSE; | |
18488 | #ifdef FOUR_WORD_PLT | |
18489 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, | |
18490 | htab->tls_trampoline + 12)) | |
18491 | return FALSE; | |
b38cadfb | 18492 | #endif |
0855e32b | 18493 | } |
b38cadfb | 18494 | |
4e617b1e PB |
18495 | return TRUE; |
18496 | } | |
18497 | ||
54ddd295 TP |
18498 | /* Filter normal symbols of CMSE entry functions of ABFD to include in |
18499 | the import library. All SYMCOUNT symbols of ABFD can be examined | |
18500 | from their pointers in SYMS. Pointers of symbols to keep should be | |
18501 | stored continuously at the beginning of that array. | |
18502 | ||
18503 | Returns the number of symbols to keep. */ | |
18504 | ||
18505 | static unsigned int | |
18506 | elf32_arm_filter_cmse_symbols (bfd *abfd ATTRIBUTE_UNUSED, | |
18507 | struct bfd_link_info *info, | |
18508 | asymbol **syms, long symcount) | |
18509 | { | |
18510 | size_t maxnamelen; | |
18511 | char *cmse_name; | |
18512 | long src_count, dst_count = 0; | |
18513 | struct elf32_arm_link_hash_table *htab; | |
18514 | ||
18515 | htab = elf32_arm_hash_table (info); | |
18516 | if (!htab->stub_bfd || !htab->stub_bfd->sections) | |
18517 | symcount = 0; | |
18518 | ||
18519 | maxnamelen = 128; | |
18520 | cmse_name = (char *) bfd_malloc (maxnamelen); | |
18521 | for (src_count = 0; src_count < symcount; src_count++) | |
18522 | { | |
18523 | struct elf32_arm_link_hash_entry *cmse_hash; | |
18524 | asymbol *sym; | |
18525 | flagword flags; | |
18526 | char *name; | |
18527 | size_t namelen; | |
18528 | ||
18529 | sym = syms[src_count]; | |
18530 | flags = sym->flags; | |
18531 | name = (char *) bfd_asymbol_name (sym); | |
18532 | ||
18533 | if ((flags & BSF_FUNCTION) != BSF_FUNCTION) | |
18534 | continue; | |
18535 | if (!(flags & (BSF_GLOBAL | BSF_WEAK))) | |
18536 | continue; | |
18537 | ||
18538 | namelen = strlen (name) + sizeof (CMSE_PREFIX) + 1; | |
18539 | if (namelen > maxnamelen) | |
18540 | { | |
18541 | cmse_name = (char *) | |
18542 | bfd_realloc (cmse_name, namelen); | |
18543 | maxnamelen = namelen; | |
18544 | } | |
18545 | snprintf (cmse_name, maxnamelen, "%s%s", CMSE_PREFIX, name); | |
18546 | cmse_hash = (struct elf32_arm_link_hash_entry *) | |
18547 | elf_link_hash_lookup (&(htab)->root, cmse_name, FALSE, FALSE, TRUE); | |
18548 | ||
18549 | if (!cmse_hash | |
18550 | || (cmse_hash->root.root.type != bfd_link_hash_defined | |
18551 | && cmse_hash->root.root.type != bfd_link_hash_defweak) | |
18552 | || cmse_hash->root.type != STT_FUNC) | |
18553 | continue; | |
18554 | ||
18555 | if (!ARM_GET_SYM_CMSE_SPCL (cmse_hash->root.target_internal)) | |
18556 | continue; | |
18557 | ||
18558 | syms[dst_count++] = sym; | |
18559 | } | |
18560 | free (cmse_name); | |
18561 | ||
18562 | syms[dst_count] = NULL; | |
18563 | ||
18564 | return dst_count; | |
18565 | } | |
18566 | ||
18567 | /* Filter symbols of ABFD to include in the import library. All | |
18568 | SYMCOUNT symbols of ABFD can be examined from their pointers in | |
18569 | SYMS. Pointers of symbols to keep should be stored continuously at | |
18570 | the beginning of that array. | |
18571 | ||
18572 | Returns the number of symbols to keep. */ | |
18573 | ||
18574 | static unsigned int | |
18575 | elf32_arm_filter_implib_symbols (bfd *abfd ATTRIBUTE_UNUSED, | |
18576 | struct bfd_link_info *info, | |
18577 | asymbol **syms, long symcount) | |
18578 | { | |
18579 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (info); | |
18580 | ||
046734ff TP |
18581 | /* Requirement 8 of "ARM v8-M Security Extensions: Requirements on |
18582 | Development Tools" (ARM-ECM-0359818) mandates Secure Gateway import | |
18583 | library to be a relocatable object file. */ | |
18584 | BFD_ASSERT (!(bfd_get_file_flags (info->out_implib_bfd) & EXEC_P)); | |
54ddd295 TP |
18585 | if (globals->cmse_implib) |
18586 | return elf32_arm_filter_cmse_symbols (abfd, info, syms, symcount); | |
18587 | else | |
18588 | return _bfd_elf_filter_global_symbols (abfd, info, syms, symcount); | |
18589 | } | |
18590 | ||
e489d0ae PB |
18591 | /* Allocate target specific section data. */ |
18592 | ||
18593 | static bfd_boolean | |
18594 | elf32_arm_new_section_hook (bfd *abfd, asection *sec) | |
18595 | { | |
f592407e AM |
18596 | if (!sec->used_by_bfd) |
18597 | { | |
18598 | _arm_elf_section_data *sdata; | |
18599 | bfd_size_type amt = sizeof (*sdata); | |
e489d0ae | 18600 | |
21d799b5 | 18601 | sdata = (_arm_elf_section_data *) bfd_zalloc (abfd, amt); |
f592407e AM |
18602 | if (sdata == NULL) |
18603 | return FALSE; | |
18604 | sec->used_by_bfd = sdata; | |
18605 | } | |
e489d0ae PB |
18606 | |
18607 | return _bfd_elf_new_section_hook (abfd, sec); | |
18608 | } | |
18609 | ||
18610 | ||
18611 | /* Used to order a list of mapping symbols by address. */ | |
18612 | ||
18613 | static int | |
18614 | elf32_arm_compare_mapping (const void * a, const void * b) | |
18615 | { | |
7f6a71ff JM |
18616 | const elf32_arm_section_map *amap = (const elf32_arm_section_map *) a; |
18617 | const elf32_arm_section_map *bmap = (const elf32_arm_section_map *) b; | |
18618 | ||
18619 | if (amap->vma > bmap->vma) | |
18620 | return 1; | |
18621 | else if (amap->vma < bmap->vma) | |
18622 | return -1; | |
18623 | else if (amap->type > bmap->type) | |
18624 | /* Ensure results do not depend on the host qsort for objects with | |
18625 | multiple mapping symbols at the same address by sorting on type | |
18626 | after vma. */ | |
18627 | return 1; | |
18628 | else if (amap->type < bmap->type) | |
18629 | return -1; | |
18630 | else | |
18631 | return 0; | |
e489d0ae PB |
18632 | } |
18633 | ||
2468f9c9 PB |
18634 | /* Add OFFSET to lower 31 bits of ADDR, leaving other bits unmodified. */ |
18635 | ||
18636 | static unsigned long | |
18637 | offset_prel31 (unsigned long addr, bfd_vma offset) | |
18638 | { | |
18639 | return (addr & ~0x7ffffffful) | ((addr + offset) & 0x7ffffffful); | |
18640 | } | |
18641 | ||
18642 | /* Copy an .ARM.exidx table entry, adding OFFSET to (applied) PREL31 | |
18643 | relocations. */ | |
18644 | ||
18645 | static void | |
18646 | copy_exidx_entry (bfd *output_bfd, bfd_byte *to, bfd_byte *from, bfd_vma offset) | |
18647 | { | |
18648 | unsigned long first_word = bfd_get_32 (output_bfd, from); | |
18649 | unsigned long second_word = bfd_get_32 (output_bfd, from + 4); | |
b38cadfb | 18650 | |
2468f9c9 PB |
18651 | /* High bit of first word is supposed to be zero. */ |
18652 | if ((first_word & 0x80000000ul) == 0) | |
18653 | first_word = offset_prel31 (first_word, offset); | |
b38cadfb | 18654 | |
2468f9c9 PB |
18655 | /* If the high bit of the first word is clear, and the bit pattern is not 0x1 |
18656 | (EXIDX_CANTUNWIND), this is an offset to an .ARM.extab entry. */ | |
18657 | if ((second_word != 0x1) && ((second_word & 0x80000000ul) == 0)) | |
18658 | second_word = offset_prel31 (second_word, offset); | |
b38cadfb | 18659 | |
2468f9c9 PB |
18660 | bfd_put_32 (output_bfd, first_word, to); |
18661 | bfd_put_32 (output_bfd, second_word, to + 4); | |
18662 | } | |
e489d0ae | 18663 | |
48229727 JB |
18664 | /* Data for make_branch_to_a8_stub(). */ |
18665 | ||
b38cadfb NC |
18666 | struct a8_branch_to_stub_data |
18667 | { | |
48229727 JB |
18668 | asection *writing_section; |
18669 | bfd_byte *contents; | |
18670 | }; | |
18671 | ||
18672 | ||
18673 | /* Helper to insert branches to Cortex-A8 erratum stubs in the right | |
18674 | places for a particular section. */ | |
18675 | ||
18676 | static bfd_boolean | |
18677 | make_branch_to_a8_stub (struct bfd_hash_entry *gen_entry, | |
99059e56 | 18678 | void *in_arg) |
48229727 JB |
18679 | { |
18680 | struct elf32_arm_stub_hash_entry *stub_entry; | |
18681 | struct a8_branch_to_stub_data *data; | |
18682 | bfd_byte *contents; | |
18683 | unsigned long branch_insn; | |
18684 | bfd_vma veneered_insn_loc, veneer_entry_loc; | |
18685 | bfd_signed_vma branch_offset; | |
18686 | bfd *abfd; | |
8d9d9490 | 18687 | unsigned int loc; |
48229727 JB |
18688 | |
18689 | stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry; | |
18690 | data = (struct a8_branch_to_stub_data *) in_arg; | |
18691 | ||
18692 | if (stub_entry->target_section != data->writing_section | |
4563a860 | 18693 | || stub_entry->stub_type < arm_stub_a8_veneer_lwm) |
48229727 JB |
18694 | return TRUE; |
18695 | ||
18696 | contents = data->contents; | |
18697 | ||
8d9d9490 TP |
18698 | /* We use target_section as Cortex-A8 erratum workaround stubs are only |
18699 | generated when both source and target are in the same section. */ | |
48229727 JB |
18700 | veneered_insn_loc = stub_entry->target_section->output_section->vma |
18701 | + stub_entry->target_section->output_offset | |
8d9d9490 | 18702 | + stub_entry->source_value; |
48229727 JB |
18703 | |
18704 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
18705 | + stub_entry->stub_sec->output_offset | |
18706 | + stub_entry->stub_offset; | |
18707 | ||
18708 | if (stub_entry->stub_type == arm_stub_a8_veneer_blx) | |
18709 | veneered_insn_loc &= ~3u; | |
18710 | ||
18711 | branch_offset = veneer_entry_loc - veneered_insn_loc - 4; | |
18712 | ||
18713 | abfd = stub_entry->target_section->owner; | |
8d9d9490 | 18714 | loc = stub_entry->source_value; |
48229727 JB |
18715 | |
18716 | /* We attempt to avoid this condition by setting stubs_always_after_branch | |
18717 | in elf32_arm_size_stubs if we've enabled the Cortex-A8 erratum workaround. | |
18718 | This check is just to be on the safe side... */ | |
18719 | if ((veneered_insn_loc & ~0xfff) == (veneer_entry_loc & ~0xfff)) | |
18720 | { | |
871b3ab2 | 18721 | _bfd_error_handler (_("%pB: error: Cortex-A8 erratum stub is " |
4eca0228 | 18722 | "allocated in unsafe location"), abfd); |
48229727 JB |
18723 | return FALSE; |
18724 | } | |
18725 | ||
18726 | switch (stub_entry->stub_type) | |
18727 | { | |
18728 | case arm_stub_a8_veneer_b: | |
18729 | case arm_stub_a8_veneer_b_cond: | |
18730 | branch_insn = 0xf0009000; | |
18731 | goto jump24; | |
18732 | ||
18733 | case arm_stub_a8_veneer_blx: | |
18734 | branch_insn = 0xf000e800; | |
18735 | goto jump24; | |
18736 | ||
18737 | case arm_stub_a8_veneer_bl: | |
18738 | { | |
18739 | unsigned int i1, j1, i2, j2, s; | |
18740 | ||
18741 | branch_insn = 0xf000d000; | |
18742 | ||
18743 | jump24: | |
18744 | if (branch_offset < -16777216 || branch_offset > 16777214) | |
18745 | { | |
18746 | /* There's not much we can do apart from complain if this | |
18747 | happens. */ | |
871b3ab2 | 18748 | _bfd_error_handler (_("%pB: error: Cortex-A8 erratum stub out " |
4eca0228 | 18749 | "of range (input file too large)"), abfd); |
48229727 JB |
18750 | return FALSE; |
18751 | } | |
18752 | ||
18753 | /* i1 = not(j1 eor s), so: | |
18754 | not i1 = j1 eor s | |
18755 | j1 = (not i1) eor s. */ | |
18756 | ||
18757 | branch_insn |= (branch_offset >> 1) & 0x7ff; | |
18758 | branch_insn |= ((branch_offset >> 12) & 0x3ff) << 16; | |
18759 | i2 = (branch_offset >> 22) & 1; | |
18760 | i1 = (branch_offset >> 23) & 1; | |
18761 | s = (branch_offset >> 24) & 1; | |
18762 | j1 = (!i1) ^ s; | |
18763 | j2 = (!i2) ^ s; | |
18764 | branch_insn |= j2 << 11; | |
18765 | branch_insn |= j1 << 13; | |
18766 | branch_insn |= s << 26; | |
18767 | } | |
18768 | break; | |
18769 | ||
18770 | default: | |
18771 | BFD_FAIL (); | |
18772 | return FALSE; | |
18773 | } | |
18774 | ||
8d9d9490 TP |
18775 | bfd_put_16 (abfd, (branch_insn >> 16) & 0xffff, &contents[loc]); |
18776 | bfd_put_16 (abfd, branch_insn & 0xffff, &contents[loc + 2]); | |
48229727 JB |
18777 | |
18778 | return TRUE; | |
18779 | } | |
18780 | ||
a504d23a LA |
18781 | /* Beginning of stm32l4xx work-around. */ |
18782 | ||
18783 | /* Functions encoding instructions necessary for the emission of the | |
18784 | fix-stm32l4xx-629360. | |
18785 | Encoding is extracted from the | |
18786 | ARM (C) Architecture Reference Manual | |
18787 | ARMv7-A and ARMv7-R edition | |
18788 | ARM DDI 0406C.b (ID072512). */ | |
18789 | ||
18790 | static inline bfd_vma | |
82188b29 | 18791 | create_instruction_branch_absolute (int branch_offset) |
a504d23a LA |
18792 | { |
18793 | /* A8.8.18 B (A8-334) | |
18794 | B target_address (Encoding T4). */ | |
18795 | /* 1111 - 0Sii - iiii - iiii - 10J1 - Jiii - iiii - iiii. */ | |
18796 | /* jump offset is: S:I1:I2:imm10:imm11:0. */ | |
18797 | /* with : I1 = NOT (J1 EOR S) I2 = NOT (J2 EOR S). */ | |
18798 | ||
a504d23a LA |
18799 | int s = ((branch_offset & 0x1000000) >> 24); |
18800 | int j1 = s ^ !((branch_offset & 0x800000) >> 23); | |
18801 | int j2 = s ^ !((branch_offset & 0x400000) >> 22); | |
18802 | ||
18803 | if (branch_offset < -(1 << 24) || branch_offset >= (1 << 24)) | |
18804 | BFD_ASSERT (0 && "Error: branch out of range. Cannot create branch."); | |
18805 | ||
18806 | bfd_vma patched_inst = 0xf0009000 | |
18807 | | s << 26 /* S. */ | |
18808 | | (((unsigned long) (branch_offset) >> 12) & 0x3ff) << 16 /* imm10. */ | |
18809 | | j1 << 13 /* J1. */ | |
18810 | | j2 << 11 /* J2. */ | |
18811 | | (((unsigned long) (branch_offset) >> 1) & 0x7ff); /* imm11. */ | |
18812 | ||
18813 | return patched_inst; | |
18814 | } | |
18815 | ||
18816 | static inline bfd_vma | |
18817 | create_instruction_ldmia (int base_reg, int wback, int reg_mask) | |
18818 | { | |
18819 | /* A8.8.57 LDM/LDMIA/LDMFD (A8-396) | |
18820 | LDMIA Rn!, {Ra, Rb, Rc, ...} (Encoding T2). */ | |
18821 | bfd_vma patched_inst = 0xe8900000 | |
18822 | | (/*W=*/wback << 21) | |
18823 | | (base_reg << 16) | |
18824 | | (reg_mask & 0x0000ffff); | |
18825 | ||
18826 | return patched_inst; | |
18827 | } | |
18828 | ||
18829 | static inline bfd_vma | |
18830 | create_instruction_ldmdb (int base_reg, int wback, int reg_mask) | |
18831 | { | |
18832 | /* A8.8.60 LDMDB/LDMEA (A8-402) | |
18833 | LDMDB Rn!, {Ra, Rb, Rc, ...} (Encoding T1). */ | |
18834 | bfd_vma patched_inst = 0xe9100000 | |
18835 | | (/*W=*/wback << 21) | |
18836 | | (base_reg << 16) | |
18837 | | (reg_mask & 0x0000ffff); | |
18838 | ||
18839 | return patched_inst; | |
18840 | } | |
18841 | ||
18842 | static inline bfd_vma | |
18843 | create_instruction_mov (int target_reg, int source_reg) | |
18844 | { | |
18845 | /* A8.8.103 MOV (register) (A8-486) | |
18846 | MOV Rd, Rm (Encoding T1). */ | |
18847 | bfd_vma patched_inst = 0x4600 | |
18848 | | (target_reg & 0x7) | |
18849 | | ((target_reg & 0x8) >> 3) << 7 | |
18850 | | (source_reg << 3); | |
18851 | ||
18852 | return patched_inst; | |
18853 | } | |
18854 | ||
18855 | static inline bfd_vma | |
18856 | create_instruction_sub (int target_reg, int source_reg, int value) | |
18857 | { | |
18858 | /* A8.8.221 SUB (immediate) (A8-708) | |
18859 | SUB Rd, Rn, #value (Encoding T3). */ | |
18860 | bfd_vma patched_inst = 0xf1a00000 | |
18861 | | (target_reg << 8) | |
18862 | | (source_reg << 16) | |
18863 | | (/*S=*/0 << 20) | |
18864 | | ((value & 0x800) >> 11) << 26 | |
18865 | | ((value & 0x700) >> 8) << 12 | |
18866 | | (value & 0x0ff); | |
18867 | ||
18868 | return patched_inst; | |
18869 | } | |
18870 | ||
18871 | static inline bfd_vma | |
9239bbd3 | 18872 | create_instruction_vldmia (int base_reg, int is_dp, int wback, int num_words, |
a504d23a LA |
18873 | int first_reg) |
18874 | { | |
18875 | /* A8.8.332 VLDM (A8-922) | |
9239bbd3 CM |
18876 | VLMD{MODE} Rn{!}, {list} (Encoding T1 or T2). */ |
18877 | bfd_vma patched_inst = (is_dp ? 0xec900b00 : 0xec900a00) | |
a504d23a LA |
18878 | | (/*W=*/wback << 21) |
18879 | | (base_reg << 16) | |
9239bbd3 CM |
18880 | | (num_words & 0x000000ff) |
18881 | | (((unsigned)first_reg >> 1) & 0x0000000f) << 12 | |
a504d23a LA |
18882 | | (first_reg & 0x00000001) << 22; |
18883 | ||
18884 | return patched_inst; | |
18885 | } | |
18886 | ||
18887 | static inline bfd_vma | |
9239bbd3 CM |
18888 | create_instruction_vldmdb (int base_reg, int is_dp, int num_words, |
18889 | int first_reg) | |
a504d23a LA |
18890 | { |
18891 | /* A8.8.332 VLDM (A8-922) | |
9239bbd3 CM |
18892 | VLMD{MODE} Rn!, {} (Encoding T1 or T2). */ |
18893 | bfd_vma patched_inst = (is_dp ? 0xed300b00 : 0xed300a00) | |
a504d23a | 18894 | | (base_reg << 16) |
9239bbd3 CM |
18895 | | (num_words & 0x000000ff) |
18896 | | (((unsigned)first_reg >>1 ) & 0x0000000f) << 12 | |
a504d23a LA |
18897 | | (first_reg & 0x00000001) << 22; |
18898 | ||
18899 | return patched_inst; | |
18900 | } | |
18901 | ||
18902 | static inline bfd_vma | |
18903 | create_instruction_udf_w (int value) | |
18904 | { | |
18905 | /* A8.8.247 UDF (A8-758) | |
18906 | Undefined (Encoding T2). */ | |
18907 | bfd_vma patched_inst = 0xf7f0a000 | |
18908 | | (value & 0x00000fff) | |
18909 | | (value & 0x000f0000) << 16; | |
18910 | ||
18911 | return patched_inst; | |
18912 | } | |
18913 | ||
18914 | static inline bfd_vma | |
18915 | create_instruction_udf (int value) | |
18916 | { | |
18917 | /* A8.8.247 UDF (A8-758) | |
18918 | Undefined (Encoding T1). */ | |
18919 | bfd_vma patched_inst = 0xde00 | |
18920 | | (value & 0xff); | |
18921 | ||
18922 | return patched_inst; | |
18923 | } | |
18924 | ||
18925 | /* Functions writing an instruction in memory, returning the next | |
18926 | memory position to write to. */ | |
18927 | ||
18928 | static inline bfd_byte * | |
18929 | push_thumb2_insn32 (struct elf32_arm_link_hash_table * htab, | |
18930 | bfd * output_bfd, bfd_byte *pt, insn32 insn) | |
18931 | { | |
18932 | put_thumb2_insn (htab, output_bfd, insn, pt); | |
18933 | return pt + 4; | |
18934 | } | |
18935 | ||
18936 | static inline bfd_byte * | |
18937 | push_thumb2_insn16 (struct elf32_arm_link_hash_table * htab, | |
18938 | bfd * output_bfd, bfd_byte *pt, insn32 insn) | |
18939 | { | |
18940 | put_thumb_insn (htab, output_bfd, insn, pt); | |
18941 | return pt + 2; | |
18942 | } | |
18943 | ||
18944 | /* Function filling up a region in memory with T1 and T2 UDFs taking | |
18945 | care of alignment. */ | |
18946 | ||
18947 | static bfd_byte * | |
18948 | stm32l4xx_fill_stub_udf (struct elf32_arm_link_hash_table * htab, | |
07d6d2b8 AM |
18949 | bfd * output_bfd, |
18950 | const bfd_byte * const base_stub_contents, | |
18951 | bfd_byte * const from_stub_contents, | |
18952 | const bfd_byte * const end_stub_contents) | |
a504d23a LA |
18953 | { |
18954 | bfd_byte *current_stub_contents = from_stub_contents; | |
18955 | ||
18956 | /* Fill the remaining of the stub with deterministic contents : UDF | |
18957 | instructions. | |
18958 | Check if realignment is needed on modulo 4 frontier using T1, to | |
18959 | further use T2. */ | |
18960 | if ((current_stub_contents < end_stub_contents) | |
18961 | && !((current_stub_contents - base_stub_contents) % 2) | |
18962 | && ((current_stub_contents - base_stub_contents) % 4)) | |
18963 | current_stub_contents = | |
18964 | push_thumb2_insn16 (htab, output_bfd, current_stub_contents, | |
18965 | create_instruction_udf (0)); | |
18966 | ||
18967 | for (; current_stub_contents < end_stub_contents;) | |
18968 | current_stub_contents = | |
18969 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
18970 | create_instruction_udf_w (0)); | |
18971 | ||
18972 | return current_stub_contents; | |
18973 | } | |
18974 | ||
18975 | /* Functions writing the stream of instructions equivalent to the | |
18976 | derived sequence for ldmia, ldmdb, vldm respectively. */ | |
18977 | ||
18978 | static void | |
18979 | stm32l4xx_create_replacing_stub_ldmia (struct elf32_arm_link_hash_table * htab, | |
18980 | bfd * output_bfd, | |
18981 | const insn32 initial_insn, | |
18982 | const bfd_byte *const initial_insn_addr, | |
18983 | bfd_byte *const base_stub_contents) | |
18984 | { | |
18985 | int wback = (initial_insn & 0x00200000) >> 21; | |
18986 | int ri, rn = (initial_insn & 0x000F0000) >> 16; | |
18987 | int insn_all_registers = initial_insn & 0x0000ffff; | |
18988 | int insn_low_registers, insn_high_registers; | |
18989 | int usable_register_mask; | |
b25e998d | 18990 | int nb_registers = elf32_arm_popcount (insn_all_registers); |
a504d23a LA |
18991 | int restore_pc = (insn_all_registers & (1 << 15)) ? 1 : 0; |
18992 | int restore_rn = (insn_all_registers & (1 << rn)) ? 1 : 0; | |
18993 | bfd_byte *current_stub_contents = base_stub_contents; | |
18994 | ||
18995 | BFD_ASSERT (is_thumb2_ldmia (initial_insn)); | |
18996 | ||
18997 | /* In BFD_ARM_STM32L4XX_FIX_ALL mode we may have to deal with | |
18998 | smaller than 8 registers load sequences that do not cause the | |
18999 | hardware issue. */ | |
19000 | if (nb_registers <= 8) | |
19001 | { | |
19002 | /* UNTOUCHED : LDMIA Rn{!}, {R-all-register-list}. */ | |
19003 | current_stub_contents = | |
19004 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19005 | initial_insn); | |
19006 | ||
19007 | /* B initial_insn_addr+4. */ | |
19008 | if (!restore_pc) | |
19009 | current_stub_contents = | |
19010 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19011 | create_instruction_branch_absolute | |
82188b29 | 19012 | (initial_insn_addr - current_stub_contents)); |
a504d23a LA |
19013 | |
19014 | /* Fill the remaining of the stub with deterministic contents. */ | |
19015 | current_stub_contents = | |
19016 | stm32l4xx_fill_stub_udf (htab, output_bfd, | |
19017 | base_stub_contents, current_stub_contents, | |
19018 | base_stub_contents + | |
19019 | STM32L4XX_ERRATUM_LDM_VENEER_SIZE); | |
19020 | ||
19021 | return; | |
19022 | } | |
19023 | ||
19024 | /* - reg_list[13] == 0. */ | |
19025 | BFD_ASSERT ((insn_all_registers & (1 << 13))==0); | |
19026 | ||
19027 | /* - reg_list[14] & reg_list[15] != 1. */ | |
19028 | BFD_ASSERT ((insn_all_registers & 0xC000) != 0xC000); | |
19029 | ||
19030 | /* - if (wback==1) reg_list[rn] == 0. */ | |
19031 | BFD_ASSERT (!wback || !restore_rn); | |
19032 | ||
19033 | /* - nb_registers > 8. */ | |
b25e998d | 19034 | BFD_ASSERT (elf32_arm_popcount (insn_all_registers) > 8); |
a504d23a LA |
19035 | |
19036 | /* At this point, LDMxx initial insn loads between 9 and 14 registers. */ | |
19037 | ||
19038 | /* In the following algorithm, we split this wide LDM using 2 LDM insns: | |
19039 | - One with the 7 lowest registers (register mask 0x007F) | |
19040 | This LDM will finally contain between 2 and 7 registers | |
19041 | - One with the 7 highest registers (register mask 0xDF80) | |
19042 | This ldm will finally contain between 2 and 7 registers. */ | |
19043 | insn_low_registers = insn_all_registers & 0x007F; | |
19044 | insn_high_registers = insn_all_registers & 0xDF80; | |
19045 | ||
19046 | /* A spare register may be needed during this veneer to temporarily | |
19047 | handle the base register. This register will be restored with the | |
19048 | last LDM operation. | |
19049 | The usable register may be any general purpose register (that | |
19050 | excludes PC, SP, LR : register mask is 0x1FFF). */ | |
19051 | usable_register_mask = 0x1FFF; | |
19052 | ||
19053 | /* Generate the stub function. */ | |
19054 | if (wback) | |
19055 | { | |
19056 | /* LDMIA Rn!, {R-low-register-list} : (Encoding T2). */ | |
19057 | current_stub_contents = | |
19058 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19059 | create_instruction_ldmia | |
19060 | (rn, /*wback=*/1, insn_low_registers)); | |
19061 | ||
19062 | /* LDMIA Rn!, {R-high-register-list} : (Encoding T2). */ | |
19063 | current_stub_contents = | |
19064 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19065 | create_instruction_ldmia | |
19066 | (rn, /*wback=*/1, insn_high_registers)); | |
19067 | if (!restore_pc) | |
19068 | { | |
19069 | /* B initial_insn_addr+4. */ | |
19070 | current_stub_contents = | |
19071 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19072 | create_instruction_branch_absolute | |
82188b29 | 19073 | (initial_insn_addr - current_stub_contents)); |
a504d23a LA |
19074 | } |
19075 | } | |
19076 | else /* if (!wback). */ | |
19077 | { | |
19078 | ri = rn; | |
19079 | ||
19080 | /* If Rn is not part of the high-register-list, move it there. */ | |
19081 | if (!(insn_high_registers & (1 << rn))) | |
19082 | { | |
19083 | /* Choose a Ri in the high-register-list that will be restored. */ | |
19084 | ri = ctz (insn_high_registers & usable_register_mask & ~(1 << rn)); | |
19085 | ||
19086 | /* MOV Ri, Rn. */ | |
19087 | current_stub_contents = | |
19088 | push_thumb2_insn16 (htab, output_bfd, current_stub_contents, | |
19089 | create_instruction_mov (ri, rn)); | |
19090 | } | |
19091 | ||
19092 | /* LDMIA Ri!, {R-low-register-list} : (Encoding T2). */ | |
19093 | current_stub_contents = | |
19094 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19095 | create_instruction_ldmia | |
19096 | (ri, /*wback=*/1, insn_low_registers)); | |
19097 | ||
19098 | /* LDMIA Ri, {R-high-register-list} : (Encoding T2). */ | |
19099 | current_stub_contents = | |
19100 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19101 | create_instruction_ldmia | |
19102 | (ri, /*wback=*/0, insn_high_registers)); | |
19103 | ||
19104 | if (!restore_pc) | |
19105 | { | |
19106 | /* B initial_insn_addr+4. */ | |
19107 | current_stub_contents = | |
19108 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19109 | create_instruction_branch_absolute | |
82188b29 | 19110 | (initial_insn_addr - current_stub_contents)); |
a504d23a LA |
19111 | } |
19112 | } | |
19113 | ||
19114 | /* Fill the remaining of the stub with deterministic contents. */ | |
19115 | current_stub_contents = | |
19116 | stm32l4xx_fill_stub_udf (htab, output_bfd, | |
19117 | base_stub_contents, current_stub_contents, | |
19118 | base_stub_contents + | |
19119 | STM32L4XX_ERRATUM_LDM_VENEER_SIZE); | |
19120 | } | |
19121 | ||
19122 | static void | |
19123 | stm32l4xx_create_replacing_stub_ldmdb (struct elf32_arm_link_hash_table * htab, | |
19124 | bfd * output_bfd, | |
19125 | const insn32 initial_insn, | |
19126 | const bfd_byte *const initial_insn_addr, | |
19127 | bfd_byte *const base_stub_contents) | |
19128 | { | |
19129 | int wback = (initial_insn & 0x00200000) >> 21; | |
19130 | int ri, rn = (initial_insn & 0x000f0000) >> 16; | |
19131 | int insn_all_registers = initial_insn & 0x0000ffff; | |
19132 | int insn_low_registers, insn_high_registers; | |
19133 | int usable_register_mask; | |
19134 | int restore_pc = (insn_all_registers & (1 << 15)) ? 1 : 0; | |
19135 | int restore_rn = (insn_all_registers & (1 << rn)) ? 1 : 0; | |
b25e998d | 19136 | int nb_registers = elf32_arm_popcount (insn_all_registers); |
a504d23a LA |
19137 | bfd_byte *current_stub_contents = base_stub_contents; |
19138 | ||
19139 | BFD_ASSERT (is_thumb2_ldmdb (initial_insn)); | |
19140 | ||
19141 | /* In BFD_ARM_STM32L4XX_FIX_ALL mode we may have to deal with | |
19142 | smaller than 8 registers load sequences that do not cause the | |
19143 | hardware issue. */ | |
19144 | if (nb_registers <= 8) | |
19145 | { | |
19146 | /* UNTOUCHED : LDMIA Rn{!}, {R-all-register-list}. */ | |
19147 | current_stub_contents = | |
19148 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19149 | initial_insn); | |
19150 | ||
19151 | /* B initial_insn_addr+4. */ | |
19152 | current_stub_contents = | |
19153 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19154 | create_instruction_branch_absolute | |
82188b29 | 19155 | (initial_insn_addr - current_stub_contents)); |
a504d23a LA |
19156 | |
19157 | /* Fill the remaining of the stub with deterministic contents. */ | |
19158 | current_stub_contents = | |
19159 | stm32l4xx_fill_stub_udf (htab, output_bfd, | |
19160 | base_stub_contents, current_stub_contents, | |
19161 | base_stub_contents + | |
19162 | STM32L4XX_ERRATUM_LDM_VENEER_SIZE); | |
19163 | ||
19164 | return; | |
19165 | } | |
19166 | ||
19167 | /* - reg_list[13] == 0. */ | |
19168 | BFD_ASSERT ((insn_all_registers & (1 << 13)) == 0); | |
19169 | ||
19170 | /* - reg_list[14] & reg_list[15] != 1. */ | |
19171 | BFD_ASSERT ((insn_all_registers & 0xC000) != 0xC000); | |
19172 | ||
19173 | /* - if (wback==1) reg_list[rn] == 0. */ | |
19174 | BFD_ASSERT (!wback || !restore_rn); | |
19175 | ||
19176 | /* - nb_registers > 8. */ | |
b25e998d | 19177 | BFD_ASSERT (elf32_arm_popcount (insn_all_registers) > 8); |
a504d23a LA |
19178 | |
19179 | /* At this point, LDMxx initial insn loads between 9 and 14 registers. */ | |
19180 | ||
19181 | /* In the following algorithm, we split this wide LDM using 2 LDM insn: | |
19182 | - One with the 7 lowest registers (register mask 0x007F) | |
19183 | This LDM will finally contain between 2 and 7 registers | |
19184 | - One with the 7 highest registers (register mask 0xDF80) | |
19185 | This ldm will finally contain between 2 and 7 registers. */ | |
19186 | insn_low_registers = insn_all_registers & 0x007F; | |
19187 | insn_high_registers = insn_all_registers & 0xDF80; | |
19188 | ||
19189 | /* A spare register may be needed during this veneer to temporarily | |
19190 | handle the base register. This register will be restored with | |
19191 | the last LDM operation. | |
19192 | The usable register may be any general purpose register (that excludes | |
19193 | PC, SP, LR : register mask is 0x1FFF). */ | |
19194 | usable_register_mask = 0x1FFF; | |
19195 | ||
19196 | /* Generate the stub function. */ | |
19197 | if (!wback && !restore_pc && !restore_rn) | |
19198 | { | |
19199 | /* Choose a Ri in the low-register-list that will be restored. */ | |
19200 | ri = ctz (insn_low_registers & usable_register_mask & ~(1 << rn)); | |
19201 | ||
19202 | /* MOV Ri, Rn. */ | |
19203 | current_stub_contents = | |
19204 | push_thumb2_insn16 (htab, output_bfd, current_stub_contents, | |
19205 | create_instruction_mov (ri, rn)); | |
19206 | ||
19207 | /* LDMDB Ri!, {R-high-register-list}. */ | |
19208 | current_stub_contents = | |
19209 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19210 | create_instruction_ldmdb | |
19211 | (ri, /*wback=*/1, insn_high_registers)); | |
19212 | ||
19213 | /* LDMDB Ri, {R-low-register-list}. */ | |
19214 | current_stub_contents = | |
19215 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19216 | create_instruction_ldmdb | |
19217 | (ri, /*wback=*/0, insn_low_registers)); | |
19218 | ||
19219 | /* B initial_insn_addr+4. */ | |
19220 | current_stub_contents = | |
19221 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19222 | create_instruction_branch_absolute | |
82188b29 | 19223 | (initial_insn_addr - current_stub_contents)); |
a504d23a LA |
19224 | } |
19225 | else if (wback && !restore_pc && !restore_rn) | |
19226 | { | |
19227 | /* LDMDB Rn!, {R-high-register-list}. */ | |
19228 | current_stub_contents = | |
19229 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19230 | create_instruction_ldmdb | |
19231 | (rn, /*wback=*/1, insn_high_registers)); | |
19232 | ||
19233 | /* LDMDB Rn!, {R-low-register-list}. */ | |
19234 | current_stub_contents = | |
19235 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19236 | create_instruction_ldmdb | |
19237 | (rn, /*wback=*/1, insn_low_registers)); | |
19238 | ||
19239 | /* B initial_insn_addr+4. */ | |
19240 | current_stub_contents = | |
19241 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19242 | create_instruction_branch_absolute | |
82188b29 | 19243 | (initial_insn_addr - current_stub_contents)); |
a504d23a LA |
19244 | } |
19245 | else if (!wback && restore_pc && !restore_rn) | |
19246 | { | |
19247 | /* Choose a Ri in the high-register-list that will be restored. */ | |
19248 | ri = ctz (insn_high_registers & usable_register_mask & ~(1 << rn)); | |
19249 | ||
19250 | /* SUB Ri, Rn, #(4*nb_registers). */ | |
19251 | current_stub_contents = | |
19252 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19253 | create_instruction_sub (ri, rn, (4 * nb_registers))); | |
19254 | ||
19255 | /* LDMIA Ri!, {R-low-register-list}. */ | |
19256 | current_stub_contents = | |
19257 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19258 | create_instruction_ldmia | |
19259 | (ri, /*wback=*/1, insn_low_registers)); | |
19260 | ||
19261 | /* LDMIA Ri, {R-high-register-list}. */ | |
19262 | current_stub_contents = | |
19263 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19264 | create_instruction_ldmia | |
19265 | (ri, /*wback=*/0, insn_high_registers)); | |
19266 | } | |
19267 | else if (wback && restore_pc && !restore_rn) | |
19268 | { | |
19269 | /* Choose a Ri in the high-register-list that will be restored. */ | |
19270 | ri = ctz (insn_high_registers & usable_register_mask & ~(1 << rn)); | |
19271 | ||
19272 | /* SUB Rn, Rn, #(4*nb_registers) */ | |
19273 | current_stub_contents = | |
19274 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19275 | create_instruction_sub (rn, rn, (4 * nb_registers))); | |
19276 | ||
19277 | /* MOV Ri, Rn. */ | |
19278 | current_stub_contents = | |
19279 | push_thumb2_insn16 (htab, output_bfd, current_stub_contents, | |
19280 | create_instruction_mov (ri, rn)); | |
19281 | ||
19282 | /* LDMIA Ri!, {R-low-register-list}. */ | |
19283 | current_stub_contents = | |
19284 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19285 | create_instruction_ldmia | |
19286 | (ri, /*wback=*/1, insn_low_registers)); | |
19287 | ||
19288 | /* LDMIA Ri, {R-high-register-list}. */ | |
19289 | current_stub_contents = | |
19290 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19291 | create_instruction_ldmia | |
19292 | (ri, /*wback=*/0, insn_high_registers)); | |
19293 | } | |
19294 | else if (!wback && !restore_pc && restore_rn) | |
19295 | { | |
19296 | ri = rn; | |
19297 | if (!(insn_low_registers & (1 << rn))) | |
19298 | { | |
19299 | /* Choose a Ri in the low-register-list that will be restored. */ | |
19300 | ri = ctz (insn_low_registers & usable_register_mask & ~(1 << rn)); | |
19301 | ||
19302 | /* MOV Ri, Rn. */ | |
19303 | current_stub_contents = | |
19304 | push_thumb2_insn16 (htab, output_bfd, current_stub_contents, | |
19305 | create_instruction_mov (ri, rn)); | |
19306 | } | |
19307 | ||
19308 | /* LDMDB Ri!, {R-high-register-list}. */ | |
19309 | current_stub_contents = | |
19310 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19311 | create_instruction_ldmdb | |
19312 | (ri, /*wback=*/1, insn_high_registers)); | |
19313 | ||
19314 | /* LDMDB Ri, {R-low-register-list}. */ | |
19315 | current_stub_contents = | |
19316 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19317 | create_instruction_ldmdb | |
19318 | (ri, /*wback=*/0, insn_low_registers)); | |
19319 | ||
19320 | /* B initial_insn_addr+4. */ | |
19321 | current_stub_contents = | |
19322 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19323 | create_instruction_branch_absolute | |
82188b29 | 19324 | (initial_insn_addr - current_stub_contents)); |
a504d23a LA |
19325 | } |
19326 | else if (!wback && restore_pc && restore_rn) | |
19327 | { | |
19328 | ri = rn; | |
19329 | if (!(insn_high_registers & (1 << rn))) | |
19330 | { | |
19331 | /* Choose a Ri in the high-register-list that will be restored. */ | |
19332 | ri = ctz (insn_high_registers & usable_register_mask & ~(1 << rn)); | |
19333 | } | |
19334 | ||
19335 | /* SUB Ri, Rn, #(4*nb_registers). */ | |
19336 | current_stub_contents = | |
19337 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19338 | create_instruction_sub (ri, rn, (4 * nb_registers))); | |
19339 | ||
19340 | /* LDMIA Ri!, {R-low-register-list}. */ | |
19341 | current_stub_contents = | |
19342 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19343 | create_instruction_ldmia | |
19344 | (ri, /*wback=*/1, insn_low_registers)); | |
19345 | ||
19346 | /* LDMIA Ri, {R-high-register-list}. */ | |
19347 | current_stub_contents = | |
19348 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19349 | create_instruction_ldmia | |
19350 | (ri, /*wback=*/0, insn_high_registers)); | |
19351 | } | |
19352 | else if (wback && restore_rn) | |
19353 | { | |
19354 | /* The assembler should not have accepted to encode this. */ | |
19355 | BFD_ASSERT (0 && "Cannot patch an instruction that has an " | |
19356 | "undefined behavior.\n"); | |
19357 | } | |
19358 | ||
19359 | /* Fill the remaining of the stub with deterministic contents. */ | |
19360 | current_stub_contents = | |
19361 | stm32l4xx_fill_stub_udf (htab, output_bfd, | |
19362 | base_stub_contents, current_stub_contents, | |
19363 | base_stub_contents + | |
19364 | STM32L4XX_ERRATUM_LDM_VENEER_SIZE); | |
19365 | ||
19366 | } | |
19367 | ||
19368 | static void | |
19369 | stm32l4xx_create_replacing_stub_vldm (struct elf32_arm_link_hash_table * htab, | |
19370 | bfd * output_bfd, | |
19371 | const insn32 initial_insn, | |
19372 | const bfd_byte *const initial_insn_addr, | |
19373 | bfd_byte *const base_stub_contents) | |
19374 | { | |
9239bbd3 | 19375 | int num_words = ((unsigned int) initial_insn << 24) >> 24; |
a504d23a LA |
19376 | bfd_byte *current_stub_contents = base_stub_contents; |
19377 | ||
19378 | BFD_ASSERT (is_thumb2_vldm (initial_insn)); | |
19379 | ||
19380 | /* In BFD_ARM_STM32L4XX_FIX_ALL mode we may have to deal with | |
9239bbd3 | 19381 | smaller than 8 words load sequences that do not cause the |
a504d23a | 19382 | hardware issue. */ |
9239bbd3 | 19383 | if (num_words <= 8) |
a504d23a LA |
19384 | { |
19385 | /* Untouched instruction. */ | |
19386 | current_stub_contents = | |
19387 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19388 | initial_insn); | |
19389 | ||
19390 | /* B initial_insn_addr+4. */ | |
19391 | current_stub_contents = | |
19392 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19393 | create_instruction_branch_absolute | |
82188b29 | 19394 | (initial_insn_addr - current_stub_contents)); |
a504d23a LA |
19395 | } |
19396 | else | |
19397 | { | |
9eaff861 | 19398 | bfd_boolean is_dp = /* DP encoding. */ |
9239bbd3 | 19399 | (initial_insn & 0xfe100f00) == 0xec100b00; |
a504d23a LA |
19400 | bfd_boolean is_ia_nobang = /* (IA without !). */ |
19401 | (((initial_insn << 7) >> 28) & 0xd) == 0x4; | |
19402 | bfd_boolean is_ia_bang = /* (IA with !) - includes VPOP. */ | |
19403 | (((initial_insn << 7) >> 28) & 0xd) == 0x5; | |
19404 | bfd_boolean is_db_bang = /* (DB with !). */ | |
19405 | (((initial_insn << 7) >> 28) & 0xd) == 0x9; | |
9239bbd3 | 19406 | int base_reg = ((unsigned int) initial_insn << 12) >> 28; |
a504d23a | 19407 | /* d = UInt (Vd:D);. */ |
9239bbd3 | 19408 | int first_reg = ((((unsigned int) initial_insn << 16) >> 28) << 1) |
a504d23a LA |
19409 | | (((unsigned int)initial_insn << 9) >> 31); |
19410 | ||
9239bbd3 CM |
19411 | /* Compute the number of 8-words chunks needed to split. */ |
19412 | int chunks = (num_words % 8) ? (num_words / 8 + 1) : (num_words / 8); | |
a504d23a LA |
19413 | int chunk; |
19414 | ||
19415 | /* The test coverage has been done assuming the following | |
19416 | hypothesis that exactly one of the previous is_ predicates is | |
19417 | true. */ | |
9239bbd3 CM |
19418 | BFD_ASSERT ( (is_ia_nobang ^ is_ia_bang ^ is_db_bang) |
19419 | && !(is_ia_nobang & is_ia_bang & is_db_bang)); | |
a504d23a | 19420 | |
9239bbd3 | 19421 | /* We treat the cutting of the words in one pass for all |
a504d23a LA |
19422 | cases, then we emit the adjustments: |
19423 | ||
19424 | vldm rx, {...} | |
19425 | -> vldm rx!, {8_words_or_less} for each needed 8_word | |
19426 | -> sub rx, rx, #size (list) | |
19427 | ||
19428 | vldm rx!, {...} | |
19429 | -> vldm rx!, {8_words_or_less} for each needed 8_word | |
19430 | This also handles vpop instruction (when rx is sp) | |
19431 | ||
19432 | vldmd rx!, {...} | |
19433 | -> vldmb rx!, {8_words_or_less} for each needed 8_word. */ | |
9239bbd3 | 19434 | for (chunk = 0; chunk < chunks; ++chunk) |
a504d23a | 19435 | { |
9239bbd3 CM |
19436 | bfd_vma new_insn = 0; |
19437 | ||
a504d23a LA |
19438 | if (is_ia_nobang || is_ia_bang) |
19439 | { | |
9239bbd3 CM |
19440 | new_insn = create_instruction_vldmia |
19441 | (base_reg, | |
19442 | is_dp, | |
19443 | /*wback= . */1, | |
19444 | chunks - (chunk + 1) ? | |
19445 | 8 : num_words - chunk * 8, | |
19446 | first_reg + chunk * 8); | |
a504d23a LA |
19447 | } |
19448 | else if (is_db_bang) | |
19449 | { | |
9239bbd3 CM |
19450 | new_insn = create_instruction_vldmdb |
19451 | (base_reg, | |
19452 | is_dp, | |
19453 | chunks - (chunk + 1) ? | |
19454 | 8 : num_words - chunk * 8, | |
19455 | first_reg + chunk * 8); | |
a504d23a | 19456 | } |
9239bbd3 CM |
19457 | |
19458 | if (new_insn) | |
19459 | current_stub_contents = | |
19460 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19461 | new_insn); | |
a504d23a LA |
19462 | } |
19463 | ||
19464 | /* Only this case requires the base register compensation | |
19465 | subtract. */ | |
19466 | if (is_ia_nobang) | |
19467 | { | |
19468 | current_stub_contents = | |
19469 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19470 | create_instruction_sub | |
9239bbd3 | 19471 | (base_reg, base_reg, 4*num_words)); |
a504d23a LA |
19472 | } |
19473 | ||
19474 | /* B initial_insn_addr+4. */ | |
19475 | current_stub_contents = | |
19476 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
19477 | create_instruction_branch_absolute | |
82188b29 | 19478 | (initial_insn_addr - current_stub_contents)); |
a504d23a LA |
19479 | } |
19480 | ||
19481 | /* Fill the remaining of the stub with deterministic contents. */ | |
19482 | current_stub_contents = | |
19483 | stm32l4xx_fill_stub_udf (htab, output_bfd, | |
19484 | base_stub_contents, current_stub_contents, | |
19485 | base_stub_contents + | |
19486 | STM32L4XX_ERRATUM_VLDM_VENEER_SIZE); | |
19487 | } | |
19488 | ||
19489 | static void | |
19490 | stm32l4xx_create_replacing_stub (struct elf32_arm_link_hash_table * htab, | |
19491 | bfd * output_bfd, | |
19492 | const insn32 wrong_insn, | |
19493 | const bfd_byte *const wrong_insn_addr, | |
19494 | bfd_byte *const stub_contents) | |
19495 | { | |
19496 | if (is_thumb2_ldmia (wrong_insn)) | |
19497 | stm32l4xx_create_replacing_stub_ldmia (htab, output_bfd, | |
19498 | wrong_insn, wrong_insn_addr, | |
19499 | stub_contents); | |
19500 | else if (is_thumb2_ldmdb (wrong_insn)) | |
19501 | stm32l4xx_create_replacing_stub_ldmdb (htab, output_bfd, | |
19502 | wrong_insn, wrong_insn_addr, | |
19503 | stub_contents); | |
19504 | else if (is_thumb2_vldm (wrong_insn)) | |
19505 | stm32l4xx_create_replacing_stub_vldm (htab, output_bfd, | |
19506 | wrong_insn, wrong_insn_addr, | |
19507 | stub_contents); | |
19508 | } | |
19509 | ||
19510 | /* End of stm32l4xx work-around. */ | |
19511 | ||
19512 | ||
e489d0ae PB |
19513 | /* Do code byteswapping. Return FALSE afterwards so that the section is |
19514 | written out as normal. */ | |
19515 | ||
19516 | static bfd_boolean | |
c7b8f16e | 19517 | elf32_arm_write_section (bfd *output_bfd, |
8029a119 NC |
19518 | struct bfd_link_info *link_info, |
19519 | asection *sec, | |
e489d0ae PB |
19520 | bfd_byte *contents) |
19521 | { | |
48229727 | 19522 | unsigned int mapcount, errcount; |
8e3de13a | 19523 | _arm_elf_section_data *arm_data; |
c7b8f16e | 19524 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); |
e489d0ae | 19525 | elf32_arm_section_map *map; |
c7b8f16e | 19526 | elf32_vfp11_erratum_list *errnode; |
a504d23a | 19527 | elf32_stm32l4xx_erratum_list *stm32l4xx_errnode; |
e489d0ae PB |
19528 | bfd_vma ptr; |
19529 | bfd_vma end; | |
c7b8f16e | 19530 | bfd_vma offset = sec->output_section->vma + sec->output_offset; |
e489d0ae | 19531 | bfd_byte tmp; |
48229727 | 19532 | unsigned int i; |
57e8b36a | 19533 | |
4dfe6ac6 NC |
19534 | if (globals == NULL) |
19535 | return FALSE; | |
19536 | ||
8e3de13a NC |
19537 | /* If this section has not been allocated an _arm_elf_section_data |
19538 | structure then we cannot record anything. */ | |
19539 | arm_data = get_arm_elf_section_data (sec); | |
19540 | if (arm_data == NULL) | |
19541 | return FALSE; | |
19542 | ||
19543 | mapcount = arm_data->mapcount; | |
19544 | map = arm_data->map; | |
c7b8f16e JB |
19545 | errcount = arm_data->erratumcount; |
19546 | ||
19547 | if (errcount != 0) | |
19548 | { | |
19549 | unsigned int endianflip = bfd_big_endian (output_bfd) ? 3 : 0; | |
19550 | ||
19551 | for (errnode = arm_data->erratumlist; errnode != 0; | |
99059e56 RM |
19552 | errnode = errnode->next) |
19553 | { | |
19554 | bfd_vma target = errnode->vma - offset; | |
19555 | ||
19556 | switch (errnode->type) | |
19557 | { | |
19558 | case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER: | |
19559 | { | |
19560 | bfd_vma branch_to_veneer; | |
19561 | /* Original condition code of instruction, plus bit mask for | |
19562 | ARM B instruction. */ | |
19563 | unsigned int insn = (errnode->u.b.vfp_insn & 0xf0000000) | |
19564 | | 0x0a000000; | |
c7b8f16e JB |
19565 | |
19566 | /* The instruction is before the label. */ | |
91d6fa6a | 19567 | target -= 4; |
c7b8f16e JB |
19568 | |
19569 | /* Above offset included in -4 below. */ | |
19570 | branch_to_veneer = errnode->u.b.veneer->vma | |
99059e56 | 19571 | - errnode->vma - 4; |
c7b8f16e JB |
19572 | |
19573 | if ((signed) branch_to_veneer < -(1 << 25) | |
19574 | || (signed) branch_to_veneer >= (1 << 25)) | |
871b3ab2 | 19575 | _bfd_error_handler (_("%pB: error: VFP11 veneer out of " |
4eca0228 | 19576 | "range"), output_bfd); |
c7b8f16e | 19577 | |
99059e56 RM |
19578 | insn |= (branch_to_veneer >> 2) & 0xffffff; |
19579 | contents[endianflip ^ target] = insn & 0xff; | |
19580 | contents[endianflip ^ (target + 1)] = (insn >> 8) & 0xff; | |
19581 | contents[endianflip ^ (target + 2)] = (insn >> 16) & 0xff; | |
19582 | contents[endianflip ^ (target + 3)] = (insn >> 24) & 0xff; | |
19583 | } | |
19584 | break; | |
c7b8f16e JB |
19585 | |
19586 | case VFP11_ERRATUM_ARM_VENEER: | |
99059e56 RM |
19587 | { |
19588 | bfd_vma branch_from_veneer; | |
19589 | unsigned int insn; | |
c7b8f16e | 19590 | |
99059e56 RM |
19591 | /* Take size of veneer into account. */ |
19592 | branch_from_veneer = errnode->u.v.branch->vma | |
19593 | - errnode->vma - 12; | |
c7b8f16e JB |
19594 | |
19595 | if ((signed) branch_from_veneer < -(1 << 25) | |
19596 | || (signed) branch_from_veneer >= (1 << 25)) | |
871b3ab2 | 19597 | _bfd_error_handler (_("%pB: error: VFP11 veneer out of " |
4eca0228 | 19598 | "range"), output_bfd); |
c7b8f16e | 19599 | |
99059e56 RM |
19600 | /* Original instruction. */ |
19601 | insn = errnode->u.v.branch->u.b.vfp_insn; | |
19602 | contents[endianflip ^ target] = insn & 0xff; | |
19603 | contents[endianflip ^ (target + 1)] = (insn >> 8) & 0xff; | |
19604 | contents[endianflip ^ (target + 2)] = (insn >> 16) & 0xff; | |
19605 | contents[endianflip ^ (target + 3)] = (insn >> 24) & 0xff; | |
19606 | ||
19607 | /* Branch back to insn after original insn. */ | |
19608 | insn = 0xea000000 | ((branch_from_veneer >> 2) & 0xffffff); | |
19609 | contents[endianflip ^ (target + 4)] = insn & 0xff; | |
19610 | contents[endianflip ^ (target + 5)] = (insn >> 8) & 0xff; | |
19611 | contents[endianflip ^ (target + 6)] = (insn >> 16) & 0xff; | |
19612 | contents[endianflip ^ (target + 7)] = (insn >> 24) & 0xff; | |
19613 | } | |
19614 | break; | |
c7b8f16e | 19615 | |
99059e56 RM |
19616 | default: |
19617 | abort (); | |
19618 | } | |
19619 | } | |
c7b8f16e | 19620 | } |
e489d0ae | 19621 | |
a504d23a LA |
19622 | if (arm_data->stm32l4xx_erratumcount != 0) |
19623 | { | |
19624 | for (stm32l4xx_errnode = arm_data->stm32l4xx_erratumlist; | |
19625 | stm32l4xx_errnode != 0; | |
19626 | stm32l4xx_errnode = stm32l4xx_errnode->next) | |
19627 | { | |
19628 | bfd_vma target = stm32l4xx_errnode->vma - offset; | |
19629 | ||
19630 | switch (stm32l4xx_errnode->type) | |
19631 | { | |
19632 | case STM32L4XX_ERRATUM_BRANCH_TO_VENEER: | |
19633 | { | |
19634 | unsigned int insn; | |
19635 | bfd_vma branch_to_veneer = | |
19636 | stm32l4xx_errnode->u.b.veneer->vma - stm32l4xx_errnode->vma; | |
19637 | ||
19638 | if ((signed) branch_to_veneer < -(1 << 24) | |
19639 | || (signed) branch_to_veneer >= (1 << 24)) | |
19640 | { | |
19641 | bfd_vma out_of_range = | |
19642 | ((signed) branch_to_veneer < -(1 << 24)) ? | |
19643 | - branch_to_veneer - (1 << 24) : | |
19644 | ((signed) branch_to_veneer >= (1 << 24)) ? | |
19645 | branch_to_veneer - (1 << 24) : 0; | |
19646 | ||
4eca0228 | 19647 | _bfd_error_handler |
2dcf00ce | 19648 | (_("%pB(%#" PRIx64 "): error: " |
90b6238f AM |
19649 | "cannot create STM32L4XX veneer; " |
19650 | "jump out of range by %" PRId64 " bytes; " | |
19651 | "cannot encode branch instruction"), | |
a504d23a | 19652 | output_bfd, |
2dcf00ce AM |
19653 | (uint64_t) (stm32l4xx_errnode->vma - 4), |
19654 | (int64_t) out_of_range); | |
a504d23a LA |
19655 | continue; |
19656 | } | |
19657 | ||
19658 | insn = create_instruction_branch_absolute | |
82188b29 | 19659 | (stm32l4xx_errnode->u.b.veneer->vma - stm32l4xx_errnode->vma); |
a504d23a LA |
19660 | |
19661 | /* The instruction is before the label. */ | |
19662 | target -= 4; | |
19663 | ||
19664 | put_thumb2_insn (globals, output_bfd, | |
19665 | (bfd_vma) insn, contents + target); | |
19666 | } | |
19667 | break; | |
19668 | ||
19669 | case STM32L4XX_ERRATUM_VENEER: | |
19670 | { | |
82188b29 NC |
19671 | bfd_byte * veneer; |
19672 | bfd_byte * veneer_r; | |
a504d23a LA |
19673 | unsigned int insn; |
19674 | ||
82188b29 NC |
19675 | veneer = contents + target; |
19676 | veneer_r = veneer | |
19677 | + stm32l4xx_errnode->u.b.veneer->vma | |
19678 | - stm32l4xx_errnode->vma - 4; | |
a504d23a LA |
19679 | |
19680 | if ((signed) (veneer_r - veneer - | |
19681 | STM32L4XX_ERRATUM_VLDM_VENEER_SIZE > | |
19682 | STM32L4XX_ERRATUM_LDM_VENEER_SIZE ? | |
19683 | STM32L4XX_ERRATUM_VLDM_VENEER_SIZE : | |
19684 | STM32L4XX_ERRATUM_LDM_VENEER_SIZE) < -(1 << 24) | |
19685 | || (signed) (veneer_r - veneer) >= (1 << 24)) | |
19686 | { | |
90b6238f AM |
19687 | _bfd_error_handler (_("%pB: error: cannot create STM32L4XX " |
19688 | "veneer"), output_bfd); | |
a504d23a LA |
19689 | continue; |
19690 | } | |
19691 | ||
19692 | /* Original instruction. */ | |
19693 | insn = stm32l4xx_errnode->u.v.branch->u.b.insn; | |
19694 | ||
19695 | stm32l4xx_create_replacing_stub | |
19696 | (globals, output_bfd, insn, (void*)veneer_r, (void*)veneer); | |
19697 | } | |
19698 | break; | |
19699 | ||
19700 | default: | |
19701 | abort (); | |
19702 | } | |
19703 | } | |
19704 | } | |
19705 | ||
2468f9c9 PB |
19706 | if (arm_data->elf.this_hdr.sh_type == SHT_ARM_EXIDX) |
19707 | { | |
19708 | arm_unwind_table_edit *edit_node | |
99059e56 | 19709 | = arm_data->u.exidx.unwind_edit_list; |
2468f9c9 | 19710 | /* Now, sec->size is the size of the section we will write. The original |
99059e56 | 19711 | size (before we merged duplicate entries and inserted EXIDX_CANTUNWIND |
2468f9c9 PB |
19712 | markers) was sec->rawsize. (This isn't the case if we perform no |
19713 | edits, then rawsize will be zero and we should use size). */ | |
21d799b5 | 19714 | bfd_byte *edited_contents = (bfd_byte *) bfd_malloc (sec->size); |
2468f9c9 PB |
19715 | unsigned int input_size = sec->rawsize ? sec->rawsize : sec->size; |
19716 | unsigned int in_index, out_index; | |
19717 | bfd_vma add_to_offsets = 0; | |
19718 | ||
19719 | for (in_index = 0, out_index = 0; in_index * 8 < input_size || edit_node;) | |
99059e56 | 19720 | { |
2468f9c9 PB |
19721 | if (edit_node) |
19722 | { | |
19723 | unsigned int edit_index = edit_node->index; | |
b38cadfb | 19724 | |
2468f9c9 | 19725 | if (in_index < edit_index && in_index * 8 < input_size) |
99059e56 | 19726 | { |
2468f9c9 PB |
19727 | copy_exidx_entry (output_bfd, edited_contents + out_index * 8, |
19728 | contents + in_index * 8, add_to_offsets); | |
19729 | out_index++; | |
19730 | in_index++; | |
19731 | } | |
19732 | else if (in_index == edit_index | |
19733 | || (in_index * 8 >= input_size | |
19734 | && edit_index == UINT_MAX)) | |
99059e56 | 19735 | { |
2468f9c9 PB |
19736 | switch (edit_node->type) |
19737 | { | |
19738 | case DELETE_EXIDX_ENTRY: | |
19739 | in_index++; | |
19740 | add_to_offsets += 8; | |
19741 | break; | |
b38cadfb | 19742 | |
2468f9c9 PB |
19743 | case INSERT_EXIDX_CANTUNWIND_AT_END: |
19744 | { | |
99059e56 | 19745 | asection *text_sec = edit_node->linked_section; |
2468f9c9 PB |
19746 | bfd_vma text_offset = text_sec->output_section->vma |
19747 | + text_sec->output_offset | |
19748 | + text_sec->size; | |
19749 | bfd_vma exidx_offset = offset + out_index * 8; | |
99059e56 | 19750 | unsigned long prel31_offset; |
2468f9c9 PB |
19751 | |
19752 | /* Note: this is meant to be equivalent to an | |
19753 | R_ARM_PREL31 relocation. These synthetic | |
19754 | EXIDX_CANTUNWIND markers are not relocated by the | |
19755 | usual BFD method. */ | |
19756 | prel31_offset = (text_offset - exidx_offset) | |
19757 | & 0x7ffffffful; | |
491d01d3 YU |
19758 | if (bfd_link_relocatable (link_info)) |
19759 | { | |
19760 | /* Here relocation for new EXIDX_CANTUNWIND is | |
19761 | created, so there is no need to | |
19762 | adjust offset by hand. */ | |
19763 | prel31_offset = text_sec->output_offset | |
19764 | + text_sec->size; | |
491d01d3 | 19765 | } |
2468f9c9 PB |
19766 | |
19767 | /* First address we can't unwind. */ | |
19768 | bfd_put_32 (output_bfd, prel31_offset, | |
19769 | &edited_contents[out_index * 8]); | |
19770 | ||
19771 | /* Code for EXIDX_CANTUNWIND. */ | |
19772 | bfd_put_32 (output_bfd, 0x1, | |
19773 | &edited_contents[out_index * 8 + 4]); | |
19774 | ||
19775 | out_index++; | |
19776 | add_to_offsets -= 8; | |
19777 | } | |
19778 | break; | |
19779 | } | |
b38cadfb | 19780 | |
2468f9c9 PB |
19781 | edit_node = edit_node->next; |
19782 | } | |
19783 | } | |
19784 | else | |
19785 | { | |
19786 | /* No more edits, copy remaining entries verbatim. */ | |
19787 | copy_exidx_entry (output_bfd, edited_contents + out_index * 8, | |
19788 | contents + in_index * 8, add_to_offsets); | |
19789 | out_index++; | |
19790 | in_index++; | |
19791 | } | |
19792 | } | |
19793 | ||
19794 | if (!(sec->flags & SEC_EXCLUDE) && !(sec->flags & SEC_NEVER_LOAD)) | |
19795 | bfd_set_section_contents (output_bfd, sec->output_section, | |
19796 | edited_contents, | |
19797 | (file_ptr) sec->output_offset, sec->size); | |
19798 | ||
19799 | return TRUE; | |
19800 | } | |
19801 | ||
48229727 JB |
19802 | /* Fix code to point to Cortex-A8 erratum stubs. */ |
19803 | if (globals->fix_cortex_a8) | |
19804 | { | |
19805 | struct a8_branch_to_stub_data data; | |
19806 | ||
19807 | data.writing_section = sec; | |
19808 | data.contents = contents; | |
19809 | ||
a504d23a LA |
19810 | bfd_hash_traverse (& globals->stub_hash_table, make_branch_to_a8_stub, |
19811 | & data); | |
48229727 JB |
19812 | } |
19813 | ||
e489d0ae PB |
19814 | if (mapcount == 0) |
19815 | return FALSE; | |
19816 | ||
c7b8f16e | 19817 | if (globals->byteswap_code) |
e489d0ae | 19818 | { |
c7b8f16e | 19819 | qsort (map, mapcount, sizeof (* map), elf32_arm_compare_mapping); |
57e8b36a | 19820 | |
c7b8f16e JB |
19821 | ptr = map[0].vma; |
19822 | for (i = 0; i < mapcount; i++) | |
99059e56 RM |
19823 | { |
19824 | if (i == mapcount - 1) | |
c7b8f16e | 19825 | end = sec->size; |
99059e56 RM |
19826 | else |
19827 | end = map[i + 1].vma; | |
e489d0ae | 19828 | |
99059e56 | 19829 | switch (map[i].type) |
e489d0ae | 19830 | { |
c7b8f16e JB |
19831 | case 'a': |
19832 | /* Byte swap code words. */ | |
19833 | while (ptr + 3 < end) | |
99059e56 RM |
19834 | { |
19835 | tmp = contents[ptr]; | |
19836 | contents[ptr] = contents[ptr + 3]; | |
19837 | contents[ptr + 3] = tmp; | |
19838 | tmp = contents[ptr + 1]; | |
19839 | contents[ptr + 1] = contents[ptr + 2]; | |
19840 | contents[ptr + 2] = tmp; | |
19841 | ptr += 4; | |
19842 | } | |
c7b8f16e | 19843 | break; |
e489d0ae | 19844 | |
c7b8f16e JB |
19845 | case 't': |
19846 | /* Byte swap code halfwords. */ | |
19847 | while (ptr + 1 < end) | |
99059e56 RM |
19848 | { |
19849 | tmp = contents[ptr]; | |
19850 | contents[ptr] = contents[ptr + 1]; | |
19851 | contents[ptr + 1] = tmp; | |
19852 | ptr += 2; | |
19853 | } | |
c7b8f16e JB |
19854 | break; |
19855 | ||
19856 | case 'd': | |
19857 | /* Leave data alone. */ | |
19858 | break; | |
19859 | } | |
99059e56 RM |
19860 | ptr = end; |
19861 | } | |
e489d0ae | 19862 | } |
8e3de13a | 19863 | |
93204d3a | 19864 | free (map); |
47b2e99c | 19865 | arm_data->mapcount = -1; |
c7b8f16e | 19866 | arm_data->mapsize = 0; |
8e3de13a | 19867 | arm_data->map = NULL; |
8e3de13a | 19868 | |
e489d0ae PB |
19869 | return FALSE; |
19870 | } | |
19871 | ||
0beaef2b PB |
19872 | /* Mangle thumb function symbols as we read them in. */ |
19873 | ||
8384fb8f | 19874 | static bfd_boolean |
0beaef2b PB |
19875 | elf32_arm_swap_symbol_in (bfd * abfd, |
19876 | const void *psrc, | |
19877 | const void *pshn, | |
19878 | Elf_Internal_Sym *dst) | |
19879 | { | |
4ba2ef8f TP |
19880 | Elf_Internal_Shdr *symtab_hdr; |
19881 | const char *name = NULL; | |
19882 | ||
8384fb8f AM |
19883 | if (!bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst)) |
19884 | return FALSE; | |
39d911fc | 19885 | dst->st_target_internal = 0; |
0beaef2b PB |
19886 | |
19887 | /* New EABI objects mark thumb function symbols by setting the low bit of | |
35fc36a8 | 19888 | the address. */ |
63e1a0fc PB |
19889 | if (ELF_ST_TYPE (dst->st_info) == STT_FUNC |
19890 | || ELF_ST_TYPE (dst->st_info) == STT_GNU_IFUNC) | |
0beaef2b | 19891 | { |
63e1a0fc PB |
19892 | if (dst->st_value & 1) |
19893 | { | |
19894 | dst->st_value &= ~(bfd_vma) 1; | |
39d911fc TP |
19895 | ARM_SET_SYM_BRANCH_TYPE (dst->st_target_internal, |
19896 | ST_BRANCH_TO_THUMB); | |
63e1a0fc PB |
19897 | } |
19898 | else | |
39d911fc | 19899 | ARM_SET_SYM_BRANCH_TYPE (dst->st_target_internal, ST_BRANCH_TO_ARM); |
35fc36a8 RS |
19900 | } |
19901 | else if (ELF_ST_TYPE (dst->st_info) == STT_ARM_TFUNC) | |
19902 | { | |
19903 | dst->st_info = ELF_ST_INFO (ELF_ST_BIND (dst->st_info), STT_FUNC); | |
39d911fc | 19904 | ARM_SET_SYM_BRANCH_TYPE (dst->st_target_internal, ST_BRANCH_TO_THUMB); |
0beaef2b | 19905 | } |
35fc36a8 | 19906 | else if (ELF_ST_TYPE (dst->st_info) == STT_SECTION) |
39d911fc | 19907 | ARM_SET_SYM_BRANCH_TYPE (dst->st_target_internal, ST_BRANCH_LONG); |
35fc36a8 | 19908 | else |
39d911fc | 19909 | ARM_SET_SYM_BRANCH_TYPE (dst->st_target_internal, ST_BRANCH_UNKNOWN); |
35fc36a8 | 19910 | |
4ba2ef8f TP |
19911 | /* Mark CMSE special symbols. */ |
19912 | symtab_hdr = & elf_symtab_hdr (abfd); | |
19913 | if (symtab_hdr->sh_size) | |
19914 | name = bfd_elf_sym_name (abfd, symtab_hdr, dst, NULL); | |
19915 | if (name && CONST_STRNEQ (name, CMSE_PREFIX)) | |
19916 | ARM_SET_SYM_CMSE_SPCL (dst->st_target_internal); | |
19917 | ||
8384fb8f | 19918 | return TRUE; |
0beaef2b PB |
19919 | } |
19920 | ||
19921 | ||
19922 | /* Mangle thumb function symbols as we write them out. */ | |
19923 | ||
19924 | static void | |
19925 | elf32_arm_swap_symbol_out (bfd *abfd, | |
19926 | const Elf_Internal_Sym *src, | |
19927 | void *cdst, | |
19928 | void *shndx) | |
19929 | { | |
19930 | Elf_Internal_Sym newsym; | |
19931 | ||
19932 | /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit | |
19933 | of the address set, as per the new EABI. We do this unconditionally | |
19934 | because objcopy does not set the elf header flags until after | |
19935 | it writes out the symbol table. */ | |
39d911fc | 19936 | if (ARM_GET_SYM_BRANCH_TYPE (src->st_target_internal) == ST_BRANCH_TO_THUMB) |
0beaef2b PB |
19937 | { |
19938 | newsym = *src; | |
34e77a92 RS |
19939 | if (ELF_ST_TYPE (src->st_info) != STT_GNU_IFUNC) |
19940 | newsym.st_info = ELF_ST_INFO (ELF_ST_BIND (src->st_info), STT_FUNC); | |
0fa3dcad | 19941 | if (newsym.st_shndx != SHN_UNDEF) |
99059e56 RM |
19942 | { |
19943 | /* Do this only for defined symbols. At link type, the static | |
19944 | linker will simulate the work of dynamic linker of resolving | |
19945 | symbols and will carry over the thumbness of found symbols to | |
19946 | the output symbol table. It's not clear how it happens, but | |
19947 | the thumbness of undefined symbols can well be different at | |
19948 | runtime, and writing '1' for them will be confusing for users | |
19949 | and possibly for dynamic linker itself. | |
19950 | */ | |
19951 | newsym.st_value |= 1; | |
19952 | } | |
906e58ca | 19953 | |
0beaef2b PB |
19954 | src = &newsym; |
19955 | } | |
19956 | bfd_elf32_swap_symbol_out (abfd, src, cdst, shndx); | |
19957 | } | |
19958 | ||
b294bdf8 MM |
19959 | /* Add the PT_ARM_EXIDX program header. */ |
19960 | ||
19961 | static bfd_boolean | |
906e58ca | 19962 | elf32_arm_modify_segment_map (bfd *abfd, |
b294bdf8 MM |
19963 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
19964 | { | |
19965 | struct elf_segment_map *m; | |
19966 | asection *sec; | |
19967 | ||
19968 | sec = bfd_get_section_by_name (abfd, ".ARM.exidx"); | |
19969 | if (sec != NULL && (sec->flags & SEC_LOAD) != 0) | |
19970 | { | |
19971 | /* If there is already a PT_ARM_EXIDX header, then we do not | |
19972 | want to add another one. This situation arises when running | |
19973 | "strip"; the input binary already has the header. */ | |
12bd6957 | 19974 | m = elf_seg_map (abfd); |
b294bdf8 MM |
19975 | while (m && m->p_type != PT_ARM_EXIDX) |
19976 | m = m->next; | |
19977 | if (!m) | |
19978 | { | |
21d799b5 | 19979 | m = (struct elf_segment_map *) |
99059e56 | 19980 | bfd_zalloc (abfd, sizeof (struct elf_segment_map)); |
b294bdf8 MM |
19981 | if (m == NULL) |
19982 | return FALSE; | |
19983 | m->p_type = PT_ARM_EXIDX; | |
19984 | m->count = 1; | |
19985 | m->sections[0] = sec; | |
19986 | ||
12bd6957 AM |
19987 | m->next = elf_seg_map (abfd); |
19988 | elf_seg_map (abfd) = m; | |
b294bdf8 MM |
19989 | } |
19990 | } | |
19991 | ||
19992 | return TRUE; | |
19993 | } | |
19994 | ||
19995 | /* We may add a PT_ARM_EXIDX program header. */ | |
19996 | ||
19997 | static int | |
a6b96beb AM |
19998 | elf32_arm_additional_program_headers (bfd *abfd, |
19999 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
b294bdf8 MM |
20000 | { |
20001 | asection *sec; | |
20002 | ||
20003 | sec = bfd_get_section_by_name (abfd, ".ARM.exidx"); | |
20004 | if (sec != NULL && (sec->flags & SEC_LOAD) != 0) | |
20005 | return 1; | |
20006 | else | |
20007 | return 0; | |
20008 | } | |
20009 | ||
34e77a92 RS |
20010 | /* Hook called by the linker routine which adds symbols from an object |
20011 | file. */ | |
20012 | ||
20013 | static bfd_boolean | |
20014 | elf32_arm_add_symbol_hook (bfd *abfd, struct bfd_link_info *info, | |
20015 | Elf_Internal_Sym *sym, const char **namep, | |
20016 | flagword *flagsp, asection **secp, bfd_vma *valp) | |
20017 | { | |
c792917c NC |
20018 | if (elf32_arm_hash_table (info) == NULL) |
20019 | return FALSE; | |
20020 | ||
34e77a92 RS |
20021 | if (elf32_arm_hash_table (info)->vxworks_p |
20022 | && !elf_vxworks_add_symbol_hook (abfd, info, sym, namep, | |
20023 | flagsp, secp, valp)) | |
20024 | return FALSE; | |
20025 | ||
20026 | return TRUE; | |
20027 | } | |
20028 | ||
0beaef2b | 20029 | /* We use this to override swap_symbol_in and swap_symbol_out. */ |
906e58ca NC |
20030 | const struct elf_size_info elf32_arm_size_info = |
20031 | { | |
0beaef2b PB |
20032 | sizeof (Elf32_External_Ehdr), |
20033 | sizeof (Elf32_External_Phdr), | |
20034 | sizeof (Elf32_External_Shdr), | |
20035 | sizeof (Elf32_External_Rel), | |
20036 | sizeof (Elf32_External_Rela), | |
20037 | sizeof (Elf32_External_Sym), | |
20038 | sizeof (Elf32_External_Dyn), | |
20039 | sizeof (Elf_External_Note), | |
20040 | 4, | |
20041 | 1, | |
20042 | 32, 2, | |
20043 | ELFCLASS32, EV_CURRENT, | |
20044 | bfd_elf32_write_out_phdrs, | |
20045 | bfd_elf32_write_shdrs_and_ehdr, | |
1489a3a0 | 20046 | bfd_elf32_checksum_contents, |
0beaef2b PB |
20047 | bfd_elf32_write_relocs, |
20048 | elf32_arm_swap_symbol_in, | |
20049 | elf32_arm_swap_symbol_out, | |
20050 | bfd_elf32_slurp_reloc_table, | |
20051 | bfd_elf32_slurp_symbol_table, | |
20052 | bfd_elf32_swap_dyn_in, | |
20053 | bfd_elf32_swap_dyn_out, | |
20054 | bfd_elf32_swap_reloc_in, | |
20055 | bfd_elf32_swap_reloc_out, | |
20056 | bfd_elf32_swap_reloca_in, | |
20057 | bfd_elf32_swap_reloca_out | |
20058 | }; | |
20059 | ||
685e70ae VK |
20060 | static bfd_vma |
20061 | read_code32 (const bfd *abfd, const bfd_byte *addr) | |
20062 | { | |
20063 | /* V7 BE8 code is always little endian. */ | |
20064 | if ((elf_elfheader (abfd)->e_flags & EF_ARM_BE8) != 0) | |
20065 | return bfd_getl32 (addr); | |
20066 | ||
20067 | return bfd_get_32 (abfd, addr); | |
20068 | } | |
20069 | ||
20070 | static bfd_vma | |
20071 | read_code16 (const bfd *abfd, const bfd_byte *addr) | |
20072 | { | |
20073 | /* V7 BE8 code is always little endian. */ | |
20074 | if ((elf_elfheader (abfd)->e_flags & EF_ARM_BE8) != 0) | |
20075 | return bfd_getl16 (addr); | |
20076 | ||
20077 | return bfd_get_16 (abfd, addr); | |
20078 | } | |
20079 | ||
6a631e86 YG |
20080 | /* Return size of plt0 entry starting at ADDR |
20081 | or (bfd_vma) -1 if size can not be determined. */ | |
20082 | ||
20083 | static bfd_vma | |
20084 | elf32_arm_plt0_size (const bfd *abfd, const bfd_byte *addr) | |
20085 | { | |
20086 | bfd_vma first_word; | |
20087 | bfd_vma plt0_size; | |
20088 | ||
685e70ae | 20089 | first_word = read_code32 (abfd, addr); |
6a631e86 YG |
20090 | |
20091 | if (first_word == elf32_arm_plt0_entry[0]) | |
20092 | plt0_size = 4 * ARRAY_SIZE (elf32_arm_plt0_entry); | |
20093 | else if (first_word == elf32_thumb2_plt0_entry[0]) | |
20094 | plt0_size = 4 * ARRAY_SIZE (elf32_thumb2_plt0_entry); | |
20095 | else | |
20096 | /* We don't yet handle this PLT format. */ | |
20097 | return (bfd_vma) -1; | |
20098 | ||
20099 | return plt0_size; | |
20100 | } | |
20101 | ||
20102 | /* Return size of plt entry starting at offset OFFSET | |
20103 | of plt section located at address START | |
20104 | or (bfd_vma) -1 if size can not be determined. */ | |
20105 | ||
20106 | static bfd_vma | |
20107 | elf32_arm_plt_size (const bfd *abfd, const bfd_byte *start, bfd_vma offset) | |
20108 | { | |
20109 | bfd_vma first_insn; | |
20110 | bfd_vma plt_size = 0; | |
20111 | const bfd_byte *addr = start + offset; | |
20112 | ||
20113 | /* PLT entry size if fixed on Thumb-only platforms. */ | |
685e70ae | 20114 | if (read_code32 (abfd, start) == elf32_thumb2_plt0_entry[0]) |
6a631e86 YG |
20115 | return 4 * ARRAY_SIZE (elf32_thumb2_plt_entry); |
20116 | ||
20117 | /* Respect Thumb stub if necessary. */ | |
685e70ae | 20118 | if (read_code16 (abfd, addr) == elf32_arm_plt_thumb_stub[0]) |
6a631e86 YG |
20119 | { |
20120 | plt_size += 2 * ARRAY_SIZE(elf32_arm_plt_thumb_stub); | |
20121 | } | |
20122 | ||
20123 | /* Strip immediate from first add. */ | |
685e70ae | 20124 | first_insn = read_code32 (abfd, addr + plt_size) & 0xffffff00; |
6a631e86 YG |
20125 | |
20126 | #ifdef FOUR_WORD_PLT | |
20127 | if (first_insn == elf32_arm_plt_entry[0]) | |
20128 | plt_size += 4 * ARRAY_SIZE (elf32_arm_plt_entry); | |
20129 | #else | |
20130 | if (first_insn == elf32_arm_plt_entry_long[0]) | |
20131 | plt_size += 4 * ARRAY_SIZE (elf32_arm_plt_entry_long); | |
20132 | else if (first_insn == elf32_arm_plt_entry_short[0]) | |
20133 | plt_size += 4 * ARRAY_SIZE (elf32_arm_plt_entry_short); | |
20134 | #endif | |
20135 | else | |
20136 | /* We don't yet handle this PLT format. */ | |
20137 | return (bfd_vma) -1; | |
20138 | ||
20139 | return plt_size; | |
20140 | } | |
20141 | ||
20142 | /* Implementation is shamelessly borrowed from _bfd_elf_get_synthetic_symtab. */ | |
20143 | ||
20144 | static long | |
20145 | elf32_arm_get_synthetic_symtab (bfd *abfd, | |
20146 | long symcount ATTRIBUTE_UNUSED, | |
20147 | asymbol **syms ATTRIBUTE_UNUSED, | |
20148 | long dynsymcount, | |
20149 | asymbol **dynsyms, | |
20150 | asymbol **ret) | |
20151 | { | |
20152 | asection *relplt; | |
20153 | asymbol *s; | |
20154 | arelent *p; | |
20155 | long count, i, n; | |
20156 | size_t size; | |
20157 | Elf_Internal_Shdr *hdr; | |
20158 | char *names; | |
20159 | asection *plt; | |
20160 | bfd_vma offset; | |
20161 | bfd_byte *data; | |
20162 | ||
20163 | *ret = NULL; | |
20164 | ||
20165 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) | |
20166 | return 0; | |
20167 | ||
20168 | if (dynsymcount <= 0) | |
20169 | return 0; | |
20170 | ||
20171 | relplt = bfd_get_section_by_name (abfd, ".rel.plt"); | |
20172 | if (relplt == NULL) | |
20173 | return 0; | |
20174 | ||
20175 | hdr = &elf_section_data (relplt)->this_hdr; | |
20176 | if (hdr->sh_link != elf_dynsymtab (abfd) | |
20177 | || (hdr->sh_type != SHT_REL && hdr->sh_type != SHT_RELA)) | |
20178 | return 0; | |
20179 | ||
20180 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
20181 | if (plt == NULL) | |
20182 | return 0; | |
20183 | ||
20184 | if (!elf32_arm_size_info.slurp_reloc_table (abfd, relplt, dynsyms, TRUE)) | |
20185 | return -1; | |
20186 | ||
20187 | data = plt->contents; | |
20188 | if (data == NULL) | |
20189 | { | |
20190 | if (!bfd_get_full_section_contents(abfd, (asection *) plt, &data) || data == NULL) | |
20191 | return -1; | |
20192 | bfd_cache_section_contents((asection *) plt, data); | |
20193 | } | |
20194 | ||
20195 | count = relplt->size / hdr->sh_entsize; | |
20196 | size = count * sizeof (asymbol); | |
20197 | p = relplt->relocation; | |
20198 | for (i = 0; i < count; i++, p += elf32_arm_size_info.int_rels_per_ext_rel) | |
20199 | { | |
20200 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
20201 | if (p->addend != 0) | |
20202 | size += sizeof ("+0x") - 1 + 8; | |
20203 | } | |
20204 | ||
20205 | s = *ret = (asymbol *) bfd_malloc (size); | |
20206 | if (s == NULL) | |
20207 | return -1; | |
20208 | ||
20209 | offset = elf32_arm_plt0_size (abfd, data); | |
20210 | if (offset == (bfd_vma) -1) | |
20211 | return -1; | |
20212 | ||
20213 | names = (char *) (s + count); | |
20214 | p = relplt->relocation; | |
20215 | n = 0; | |
20216 | for (i = 0; i < count; i++, p += elf32_arm_size_info.int_rels_per_ext_rel) | |
20217 | { | |
20218 | size_t len; | |
20219 | ||
20220 | bfd_vma plt_size = elf32_arm_plt_size (abfd, data, offset); | |
20221 | if (plt_size == (bfd_vma) -1) | |
20222 | break; | |
20223 | ||
20224 | *s = **p->sym_ptr_ptr; | |
20225 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
20226 | we are defining a symbol, ensure one of them is set. */ | |
20227 | if ((s->flags & BSF_LOCAL) == 0) | |
20228 | s->flags |= BSF_GLOBAL; | |
20229 | s->flags |= BSF_SYNTHETIC; | |
20230 | s->section = plt; | |
20231 | s->value = offset; | |
20232 | s->name = names; | |
20233 | s->udata.p = NULL; | |
20234 | len = strlen ((*p->sym_ptr_ptr)->name); | |
20235 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
20236 | names += len; | |
20237 | if (p->addend != 0) | |
20238 | { | |
20239 | char buf[30], *a; | |
20240 | ||
20241 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
20242 | names += sizeof ("+0x") - 1; | |
20243 | bfd_sprintf_vma (abfd, buf, p->addend); | |
20244 | for (a = buf; *a == '0'; ++a) | |
20245 | ; | |
20246 | len = strlen (a); | |
20247 | memcpy (names, a, len); | |
20248 | names += len; | |
20249 | } | |
20250 | memcpy (names, "@plt", sizeof ("@plt")); | |
20251 | names += sizeof ("@plt"); | |
20252 | ++s, ++n; | |
20253 | offset += plt_size; | |
20254 | } | |
20255 | ||
20256 | return n; | |
20257 | } | |
20258 | ||
ac4c9b04 MG |
20259 | static bfd_boolean |
20260 | elf32_arm_section_flags (flagword *flags, const Elf_Internal_Shdr * hdr) | |
20261 | { | |
f0728ee3 AV |
20262 | if (hdr->sh_flags & SHF_ARM_PURECODE) |
20263 | *flags |= SEC_ELF_PURECODE; | |
ac4c9b04 MG |
20264 | return TRUE; |
20265 | } | |
20266 | ||
20267 | static flagword | |
20268 | elf32_arm_lookup_section_flags (char *flag_name) | |
20269 | { | |
f0728ee3 AV |
20270 | if (!strcmp (flag_name, "SHF_ARM_PURECODE")) |
20271 | return SHF_ARM_PURECODE; | |
ac4c9b04 MG |
20272 | |
20273 | return SEC_NO_FLAGS; | |
20274 | } | |
20275 | ||
491d01d3 YU |
20276 | static unsigned int |
20277 | elf32_arm_count_additional_relocs (asection *sec) | |
20278 | { | |
20279 | struct _arm_elf_section_data *arm_data; | |
20280 | arm_data = get_arm_elf_section_data (sec); | |
5025eb7c | 20281 | |
6342be70 | 20282 | return arm_data == NULL ? 0 : arm_data->additional_reloc_count; |
491d01d3 YU |
20283 | } |
20284 | ||
5522f910 | 20285 | /* Called to set the sh_flags, sh_link and sh_info fields of OSECTION which |
9eaff861 | 20286 | has a type >= SHT_LOOS. Returns TRUE if these fields were initialised |
5522f910 NC |
20287 | FALSE otherwise. ISECTION is the best guess matching section from the |
20288 | input bfd IBFD, but it might be NULL. */ | |
20289 | ||
20290 | static bfd_boolean | |
20291 | elf32_arm_copy_special_section_fields (const bfd *ibfd ATTRIBUTE_UNUSED, | |
20292 | bfd *obfd ATTRIBUTE_UNUSED, | |
20293 | const Elf_Internal_Shdr *isection ATTRIBUTE_UNUSED, | |
20294 | Elf_Internal_Shdr *osection) | |
20295 | { | |
20296 | switch (osection->sh_type) | |
20297 | { | |
20298 | case SHT_ARM_EXIDX: | |
20299 | { | |
20300 | Elf_Internal_Shdr **oheaders = elf_elfsections (obfd); | |
20301 | Elf_Internal_Shdr **iheaders = elf_elfsections (ibfd); | |
20302 | unsigned i = 0; | |
20303 | ||
20304 | osection->sh_flags = SHF_ALLOC | SHF_LINK_ORDER; | |
20305 | osection->sh_info = 0; | |
20306 | ||
20307 | /* The sh_link field must be set to the text section associated with | |
20308 | this index section. Unfortunately the ARM EHABI does not specify | |
20309 | exactly how to determine this association. Our caller does try | |
20310 | to match up OSECTION with its corresponding input section however | |
20311 | so that is a good first guess. */ | |
20312 | if (isection != NULL | |
20313 | && osection->bfd_section != NULL | |
20314 | && isection->bfd_section != NULL | |
20315 | && isection->bfd_section->output_section != NULL | |
20316 | && isection->bfd_section->output_section == osection->bfd_section | |
20317 | && iheaders != NULL | |
20318 | && isection->sh_link > 0 | |
20319 | && isection->sh_link < elf_numsections (ibfd) | |
20320 | && iheaders[isection->sh_link]->bfd_section != NULL | |
20321 | && iheaders[isection->sh_link]->bfd_section->output_section != NULL | |
20322 | ) | |
20323 | { | |
20324 | for (i = elf_numsections (obfd); i-- > 0;) | |
20325 | if (oheaders[i]->bfd_section | |
20326 | == iheaders[isection->sh_link]->bfd_section->output_section) | |
20327 | break; | |
20328 | } | |
9eaff861 | 20329 | |
5522f910 NC |
20330 | if (i == 0) |
20331 | { | |
20332 | /* Failing that we have to find a matching section ourselves. If | |
20333 | we had the output section name available we could compare that | |
20334 | with input section names. Unfortunately we don't. So instead | |
20335 | we use a simple heuristic and look for the nearest executable | |
20336 | section before this one. */ | |
20337 | for (i = elf_numsections (obfd); i-- > 0;) | |
20338 | if (oheaders[i] == osection) | |
20339 | break; | |
20340 | if (i == 0) | |
20341 | break; | |
20342 | ||
20343 | while (i-- > 0) | |
20344 | if (oheaders[i]->sh_type == SHT_PROGBITS | |
20345 | && (oheaders[i]->sh_flags & (SHF_ALLOC | SHF_EXECINSTR)) | |
20346 | == (SHF_ALLOC | SHF_EXECINSTR)) | |
20347 | break; | |
20348 | } | |
20349 | ||
20350 | if (i) | |
20351 | { | |
20352 | osection->sh_link = i; | |
20353 | /* If the text section was part of a group | |
20354 | then the index section should be too. */ | |
20355 | if (oheaders[i]->sh_flags & SHF_GROUP) | |
20356 | osection->sh_flags |= SHF_GROUP; | |
20357 | return TRUE; | |
20358 | } | |
20359 | } | |
20360 | break; | |
20361 | ||
20362 | case SHT_ARM_PREEMPTMAP: | |
20363 | osection->sh_flags = SHF_ALLOC; | |
20364 | break; | |
20365 | ||
20366 | case SHT_ARM_ATTRIBUTES: | |
20367 | case SHT_ARM_DEBUGOVERLAY: | |
20368 | case SHT_ARM_OVERLAYSECTION: | |
20369 | default: | |
20370 | break; | |
20371 | } | |
20372 | ||
20373 | return FALSE; | |
20374 | } | |
20375 | ||
d691934d NC |
20376 | /* Returns TRUE if NAME is an ARM mapping symbol. |
20377 | Traditionally the symbols $a, $d and $t have been used. | |
20378 | The ARM ELF standard also defines $x (for A64 code). It also allows a | |
20379 | period initiated suffix to be added to the symbol: "$[adtx]\.[:sym_char]+". | |
20380 | Other tools might also produce $b (Thumb BL), $f, $p, $m and $v, but we do | |
20381 | not support them here. $t.x indicates the start of ThumbEE instructions. */ | |
20382 | ||
20383 | static bfd_boolean | |
20384 | is_arm_mapping_symbol (const char * name) | |
20385 | { | |
20386 | return name != NULL /* Paranoia. */ | |
20387 | && name[0] == '$' /* Note: if objcopy --prefix-symbols has been used then | |
20388 | the mapping symbols could have acquired a prefix. | |
20389 | We do not support this here, since such symbols no | |
20390 | longer conform to the ARM ELF ABI. */ | |
20391 | && (name[1] == 'a' || name[1] == 'd' || name[1] == 't' || name[1] == 'x') | |
20392 | && (name[2] == 0 || name[2] == '.'); | |
20393 | /* FIXME: Strictly speaking the symbol is only a valid mapping symbol if | |
20394 | any characters that follow the period are legal characters for the body | |
20395 | of a symbol's name. For now we just assume that this is the case. */ | |
20396 | } | |
20397 | ||
fca2a38f NC |
20398 | /* Make sure that mapping symbols in object files are not removed via the |
20399 | "strip --strip-unneeded" tool. These symbols are needed in order to | |
20400 | correctly generate interworking veneers, and for byte swapping code | |
20401 | regions. Once an object file has been linked, it is safe to remove the | |
20402 | symbols as they will no longer be needed. */ | |
20403 | ||
20404 | static void | |
20405 | elf32_arm_backend_symbol_processing (bfd *abfd, asymbol *sym) | |
20406 | { | |
20407 | if (((abfd->flags & (EXEC_P | DYNAMIC)) == 0) | |
fca2a38f | 20408 | && sym->section != bfd_abs_section_ptr |
d691934d | 20409 | && is_arm_mapping_symbol (sym->name)) |
fca2a38f NC |
20410 | sym->flags |= BSF_KEEP; |
20411 | } | |
20412 | ||
5522f910 NC |
20413 | #undef elf_backend_copy_special_section_fields |
20414 | #define elf_backend_copy_special_section_fields elf32_arm_copy_special_section_fields | |
20415 | ||
252b5132 | 20416 | #define ELF_ARCH bfd_arch_arm |
ae95ffa6 | 20417 | #define ELF_TARGET_ID ARM_ELF_DATA |
252b5132 | 20418 | #define ELF_MACHINE_CODE EM_ARM |
d0facd1b NC |
20419 | #ifdef __QNXTARGET__ |
20420 | #define ELF_MAXPAGESIZE 0x1000 | |
20421 | #else | |
7572ca89 | 20422 | #define ELF_MAXPAGESIZE 0x10000 |
d0facd1b | 20423 | #endif |
b1342370 | 20424 | #define ELF_MINPAGESIZE 0x1000 |
24718e3b | 20425 | #define ELF_COMMONPAGESIZE 0x1000 |
252b5132 | 20426 | |
07d6d2b8 | 20427 | #define bfd_elf32_mkobject elf32_arm_mkobject |
ba93b8ac | 20428 | |
99e4ae17 AJ |
20429 | #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data |
20430 | #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data | |
252b5132 RH |
20431 | #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags |
20432 | #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data | |
07d6d2b8 | 20433 | #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create |
dc810e39 | 20434 | #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup |
b38cadfb | 20435 | #define bfd_elf32_bfd_reloc_name_lookup elf32_arm_reloc_name_lookup |
07d6d2b8 AM |
20436 | #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line |
20437 | #define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info | |
e489d0ae | 20438 | #define bfd_elf32_new_section_hook elf32_arm_new_section_hook |
3c9458e9 | 20439 | #define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol |
3e6b1042 | 20440 | #define bfd_elf32_bfd_final_link elf32_arm_final_link |
07d6d2b8 | 20441 | #define bfd_elf32_get_synthetic_symtab elf32_arm_get_synthetic_symtab |
252b5132 | 20442 | |
07d6d2b8 AM |
20443 | #define elf_backend_get_symbol_type elf32_arm_get_symbol_type |
20444 | #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook | |
6a5bb875 | 20445 | #define elf_backend_gc_mark_extra_sections elf32_arm_gc_mark_extra_sections |
07d6d2b8 | 20446 | #define elf_backend_check_relocs elf32_arm_check_relocs |
9eaff861 | 20447 | #define elf_backend_update_relocs elf32_arm_update_relocs |
dc810e39 | 20448 | #define elf_backend_relocate_section elf32_arm_relocate_section |
e489d0ae | 20449 | #define elf_backend_write_section elf32_arm_write_section |
252b5132 | 20450 | #define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol |
07d6d2b8 | 20451 | #define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections |
252b5132 RH |
20452 | #define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol |
20453 | #define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections | |
20454 | #define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections | |
0855e32b | 20455 | #define elf_backend_always_size_sections elf32_arm_always_size_sections |
74541ad4 | 20456 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
ba96a88f | 20457 | #define elf_backend_post_process_headers elf32_arm_post_process_headers |
99e4ae17 | 20458 | #define elf_backend_reloc_type_class elf32_arm_reloc_type_class |
c178919b | 20459 | #define elf_backend_object_p elf32_arm_object_p |
07d6d2b8 AM |
20460 | #define elf_backend_fake_sections elf32_arm_fake_sections |
20461 | #define elf_backend_section_from_shdr elf32_arm_section_from_shdr | |
20462 | #define elf_backend_final_write_processing elf32_arm_final_write_processing | |
20463 | #define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol | |
0beaef2b | 20464 | #define elf_backend_size_info elf32_arm_size_info |
b294bdf8 | 20465 | #define elf_backend_modify_segment_map elf32_arm_modify_segment_map |
07d6d2b8 AM |
20466 | #define elf_backend_additional_program_headers elf32_arm_additional_program_headers |
20467 | #define elf_backend_output_arch_local_syms elf32_arm_output_arch_local_syms | |
54ddd295 | 20468 | #define elf_backend_filter_implib_symbols elf32_arm_filter_implib_symbols |
07d6d2b8 | 20469 | #define elf_backend_begin_write_processing elf32_arm_begin_write_processing |
34e77a92 | 20470 | #define elf_backend_add_symbol_hook elf32_arm_add_symbol_hook |
491d01d3 | 20471 | #define elf_backend_count_additional_relocs elf32_arm_count_additional_relocs |
fca2a38f | 20472 | #define elf_backend_symbol_processing elf32_arm_backend_symbol_processing |
906e58ca NC |
20473 | |
20474 | #define elf_backend_can_refcount 1 | |
20475 | #define elf_backend_can_gc_sections 1 | |
20476 | #define elf_backend_plt_readonly 1 | |
20477 | #define elf_backend_want_got_plt 1 | |
20478 | #define elf_backend_want_plt_sym 0 | |
5474d94f | 20479 | #define elf_backend_want_dynrelro 1 |
906e58ca NC |
20480 | #define elf_backend_may_use_rel_p 1 |
20481 | #define elf_backend_may_use_rela_p 0 | |
4e7fd91e | 20482 | #define elf_backend_default_use_rela_p 0 |
64f52338 | 20483 | #define elf_backend_dtrel_excludes_plt 1 |
252b5132 | 20484 | |
04f7c78d | 20485 | #define elf_backend_got_header_size 12 |
b68a20d6 | 20486 | #define elf_backend_extern_protected_data 1 |
04f7c78d | 20487 | |
07d6d2b8 | 20488 | #undef elf_backend_obj_attrs_vendor |
906e58ca | 20489 | #define elf_backend_obj_attrs_vendor "aeabi" |
07d6d2b8 | 20490 | #undef elf_backend_obj_attrs_section |
906e58ca | 20491 | #define elf_backend_obj_attrs_section ".ARM.attributes" |
07d6d2b8 | 20492 | #undef elf_backend_obj_attrs_arg_type |
906e58ca | 20493 | #define elf_backend_obj_attrs_arg_type elf32_arm_obj_attrs_arg_type |
07d6d2b8 | 20494 | #undef elf_backend_obj_attrs_section_type |
104d59d1 | 20495 | #define elf_backend_obj_attrs_section_type SHT_ARM_ATTRIBUTES |
b38cadfb | 20496 | #define elf_backend_obj_attrs_order elf32_arm_obj_attrs_order |
07d6d2b8 | 20497 | #define elf_backend_obj_attrs_handle_unknown elf32_arm_obj_attrs_handle_unknown |
104d59d1 | 20498 | |
07d6d2b8 | 20499 | #undef elf_backend_section_flags |
ac4c9b04 | 20500 | #define elf_backend_section_flags elf32_arm_section_flags |
07d6d2b8 AM |
20501 | #undef elf_backend_lookup_section_flags_hook |
20502 | #define elf_backend_lookup_section_flags_hook elf32_arm_lookup_section_flags | |
ac4c9b04 | 20503 | |
a2f63b2e MR |
20504 | #define elf_backend_linux_prpsinfo32_ugid16 TRUE |
20505 | ||
252b5132 | 20506 | #include "elf32-target.h" |
7f266840 | 20507 | |
b38cadfb NC |
20508 | /* Native Client targets. */ |
20509 | ||
20510 | #undef TARGET_LITTLE_SYM | |
6d00b590 | 20511 | #define TARGET_LITTLE_SYM arm_elf32_nacl_le_vec |
b38cadfb NC |
20512 | #undef TARGET_LITTLE_NAME |
20513 | #define TARGET_LITTLE_NAME "elf32-littlearm-nacl" | |
20514 | #undef TARGET_BIG_SYM | |
6d00b590 | 20515 | #define TARGET_BIG_SYM arm_elf32_nacl_be_vec |
b38cadfb NC |
20516 | #undef TARGET_BIG_NAME |
20517 | #define TARGET_BIG_NAME "elf32-bigarm-nacl" | |
20518 | ||
20519 | /* Like elf32_arm_link_hash_table_create -- but overrides | |
20520 | appropriately for NaCl. */ | |
20521 | ||
20522 | static struct bfd_link_hash_table * | |
20523 | elf32_arm_nacl_link_hash_table_create (bfd *abfd) | |
20524 | { | |
20525 | struct bfd_link_hash_table *ret; | |
20526 | ||
20527 | ret = elf32_arm_link_hash_table_create (abfd); | |
20528 | if (ret) | |
20529 | { | |
20530 | struct elf32_arm_link_hash_table *htab | |
20531 | = (struct elf32_arm_link_hash_table *) ret; | |
20532 | ||
20533 | htab->nacl_p = 1; | |
20534 | ||
20535 | htab->plt_header_size = 4 * ARRAY_SIZE (elf32_arm_nacl_plt0_entry); | |
20536 | htab->plt_entry_size = 4 * ARRAY_SIZE (elf32_arm_nacl_plt_entry); | |
20537 | } | |
20538 | return ret; | |
20539 | } | |
20540 | ||
20541 | /* Since NaCl doesn't use the ARM-specific unwind format, we don't | |
20542 | really need to use elf32_arm_modify_segment_map. But we do it | |
20543 | anyway just to reduce gratuitous differences with the stock ARM backend. */ | |
20544 | ||
20545 | static bfd_boolean | |
20546 | elf32_arm_nacl_modify_segment_map (bfd *abfd, struct bfd_link_info *info) | |
20547 | { | |
20548 | return (elf32_arm_modify_segment_map (abfd, info) | |
20549 | && nacl_modify_segment_map (abfd, info)); | |
20550 | } | |
20551 | ||
887badb3 RM |
20552 | static void |
20553 | elf32_arm_nacl_final_write_processing (bfd *abfd, bfd_boolean linker) | |
20554 | { | |
20555 | elf32_arm_final_write_processing (abfd, linker); | |
20556 | nacl_final_write_processing (abfd, linker); | |
20557 | } | |
20558 | ||
6a631e86 YG |
20559 | static bfd_vma |
20560 | elf32_arm_nacl_plt_sym_val (bfd_vma i, const asection *plt, | |
20561 | const arelent *rel ATTRIBUTE_UNUSED) | |
20562 | { | |
20563 | return plt->vma | |
20564 | + 4 * (ARRAY_SIZE (elf32_arm_nacl_plt0_entry) + | |
20565 | i * ARRAY_SIZE (elf32_arm_nacl_plt_entry)); | |
20566 | } | |
887badb3 | 20567 | |
b38cadfb | 20568 | #undef elf32_bed |
6a631e86 | 20569 | #define elf32_bed elf32_arm_nacl_bed |
b38cadfb NC |
20570 | #undef bfd_elf32_bfd_link_hash_table_create |
20571 | #define bfd_elf32_bfd_link_hash_table_create \ | |
20572 | elf32_arm_nacl_link_hash_table_create | |
20573 | #undef elf_backend_plt_alignment | |
6a631e86 | 20574 | #define elf_backend_plt_alignment 4 |
b38cadfb NC |
20575 | #undef elf_backend_modify_segment_map |
20576 | #define elf_backend_modify_segment_map elf32_arm_nacl_modify_segment_map | |
20577 | #undef elf_backend_modify_program_headers | |
20578 | #define elf_backend_modify_program_headers nacl_modify_program_headers | |
887badb3 RM |
20579 | #undef elf_backend_final_write_processing |
20580 | #define elf_backend_final_write_processing elf32_arm_nacl_final_write_processing | |
6a631e86 YG |
20581 | #undef bfd_elf32_get_synthetic_symtab |
20582 | #undef elf_backend_plt_sym_val | |
20583 | #define elf_backend_plt_sym_val elf32_arm_nacl_plt_sym_val | |
5522f910 | 20584 | #undef elf_backend_copy_special_section_fields |
b38cadfb | 20585 | |
887badb3 RM |
20586 | #undef ELF_MINPAGESIZE |
20587 | #undef ELF_COMMONPAGESIZE | |
20588 | ||
b38cadfb NC |
20589 | |
20590 | #include "elf32-target.h" | |
20591 | ||
20592 | /* Reset to defaults. */ | |
20593 | #undef elf_backend_plt_alignment | |
20594 | #undef elf_backend_modify_segment_map | |
20595 | #define elf_backend_modify_segment_map elf32_arm_modify_segment_map | |
20596 | #undef elf_backend_modify_program_headers | |
887badb3 RM |
20597 | #undef elf_backend_final_write_processing |
20598 | #define elf_backend_final_write_processing elf32_arm_final_write_processing | |
20599 | #undef ELF_MINPAGESIZE | |
20600 | #define ELF_MINPAGESIZE 0x1000 | |
20601 | #undef ELF_COMMONPAGESIZE | |
20602 | #define ELF_COMMONPAGESIZE 0x1000 | |
20603 | ||
b38cadfb | 20604 | |
617a5ada CL |
20605 | /* FDPIC Targets. */ |
20606 | ||
20607 | #undef TARGET_LITTLE_SYM | |
20608 | #define TARGET_LITTLE_SYM arm_elf32_fdpic_le_vec | |
20609 | #undef TARGET_LITTLE_NAME | |
20610 | #define TARGET_LITTLE_NAME "elf32-littlearm-fdpic" | |
20611 | #undef TARGET_BIG_SYM | |
20612 | #define TARGET_BIG_SYM arm_elf32_fdpic_be_vec | |
20613 | #undef TARGET_BIG_NAME | |
20614 | #define TARGET_BIG_NAME "elf32-bigarm-fdpic" | |
20615 | #undef elf_match_priority | |
20616 | #define elf_match_priority 128 | |
18a20338 CL |
20617 | #undef ELF_OSABI |
20618 | #define ELF_OSABI ELFOSABI_ARM_FDPIC | |
617a5ada CL |
20619 | |
20620 | /* Like elf32_arm_link_hash_table_create -- but overrides | |
20621 | appropriately for FDPIC. */ | |
20622 | ||
20623 | static struct bfd_link_hash_table * | |
20624 | elf32_arm_fdpic_link_hash_table_create (bfd *abfd) | |
20625 | { | |
20626 | struct bfd_link_hash_table *ret; | |
20627 | ||
20628 | ret = elf32_arm_link_hash_table_create (abfd); | |
20629 | if (ret) | |
20630 | { | |
20631 | struct elf32_arm_link_hash_table *htab = (struct elf32_arm_link_hash_table *) ret; | |
20632 | ||
20633 | htab->fdpic_p = 1; | |
20634 | } | |
20635 | return ret; | |
20636 | } | |
20637 | ||
e8b09b87 CL |
20638 | /* We need dynamic symbols for every section, since segments can |
20639 | relocate independently. */ | |
20640 | static bfd_boolean | |
20641 | elf32_arm_fdpic_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED, | |
20642 | struct bfd_link_info *info | |
20643 | ATTRIBUTE_UNUSED, | |
20644 | asection *p ATTRIBUTE_UNUSED) | |
20645 | { | |
20646 | switch (elf_section_data (p)->this_hdr.sh_type) | |
20647 | { | |
20648 | case SHT_PROGBITS: | |
20649 | case SHT_NOBITS: | |
20650 | /* If sh_type is yet undecided, assume it could be | |
20651 | SHT_PROGBITS/SHT_NOBITS. */ | |
20652 | case SHT_NULL: | |
20653 | return FALSE; | |
20654 | ||
20655 | /* There shouldn't be section relative relocations | |
20656 | against any other section. */ | |
20657 | default: | |
20658 | return TRUE; | |
20659 | } | |
20660 | } | |
20661 | ||
617a5ada CL |
20662 | #undef elf32_bed |
20663 | #define elf32_bed elf32_arm_fdpic_bed | |
20664 | ||
20665 | #undef bfd_elf32_bfd_link_hash_table_create | |
4b24dd1a | 20666 | #define bfd_elf32_bfd_link_hash_table_create elf32_arm_fdpic_link_hash_table_create |
617a5ada | 20667 | |
e8b09b87 CL |
20668 | #undef elf_backend_omit_section_dynsym |
20669 | #define elf_backend_omit_section_dynsym elf32_arm_fdpic_omit_section_dynsym | |
20670 | ||
617a5ada | 20671 | #include "elf32-target.h" |
e8b09b87 | 20672 | |
617a5ada | 20673 | #undef elf_match_priority |
18a20338 | 20674 | #undef ELF_OSABI |
e8b09b87 | 20675 | #undef elf_backend_omit_section_dynsym |
617a5ada | 20676 | |
906e58ca | 20677 | /* VxWorks Targets. */ |
4e7fd91e | 20678 | |
07d6d2b8 AM |
20679 | #undef TARGET_LITTLE_SYM |
20680 | #define TARGET_LITTLE_SYM arm_elf32_vxworks_le_vec | |
20681 | #undef TARGET_LITTLE_NAME | |
20682 | #define TARGET_LITTLE_NAME "elf32-littlearm-vxworks" | |
20683 | #undef TARGET_BIG_SYM | |
20684 | #define TARGET_BIG_SYM arm_elf32_vxworks_be_vec | |
20685 | #undef TARGET_BIG_NAME | |
20686 | #define TARGET_BIG_NAME "elf32-bigarm-vxworks" | |
4e7fd91e PB |
20687 | |
20688 | /* Like elf32_arm_link_hash_table_create -- but overrides | |
20689 | appropriately for VxWorks. */ | |
906e58ca | 20690 | |
4e7fd91e PB |
20691 | static struct bfd_link_hash_table * |
20692 | elf32_arm_vxworks_link_hash_table_create (bfd *abfd) | |
20693 | { | |
20694 | struct bfd_link_hash_table *ret; | |
20695 | ||
20696 | ret = elf32_arm_link_hash_table_create (abfd); | |
20697 | if (ret) | |
20698 | { | |
20699 | struct elf32_arm_link_hash_table *htab | |
00a97672 | 20700 | = (struct elf32_arm_link_hash_table *) ret; |
4e7fd91e | 20701 | htab->use_rel = 0; |
00a97672 | 20702 | htab->vxworks_p = 1; |
4e7fd91e PB |
20703 | } |
20704 | return ret; | |
906e58ca | 20705 | } |
4e7fd91e | 20706 | |
00a97672 RS |
20707 | static void |
20708 | elf32_arm_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker) | |
20709 | { | |
20710 | elf32_arm_final_write_processing (abfd, linker); | |
20711 | elf_vxworks_final_write_processing (abfd, linker); | |
20712 | } | |
20713 | ||
906e58ca | 20714 | #undef elf32_bed |
4e7fd91e PB |
20715 | #define elf32_bed elf32_arm_vxworks_bed |
20716 | ||
906e58ca NC |
20717 | #undef bfd_elf32_bfd_link_hash_table_create |
20718 | #define bfd_elf32_bfd_link_hash_table_create elf32_arm_vxworks_link_hash_table_create | |
906e58ca NC |
20719 | #undef elf_backend_final_write_processing |
20720 | #define elf_backend_final_write_processing elf32_arm_vxworks_final_write_processing | |
20721 | #undef elf_backend_emit_relocs | |
9eaff861 | 20722 | #define elf_backend_emit_relocs elf_vxworks_emit_relocs |
4e7fd91e | 20723 | |
906e58ca | 20724 | #undef elf_backend_may_use_rel_p |
00a97672 | 20725 | #define elf_backend_may_use_rel_p 0 |
906e58ca | 20726 | #undef elf_backend_may_use_rela_p |
00a97672 | 20727 | #define elf_backend_may_use_rela_p 1 |
906e58ca | 20728 | #undef elf_backend_default_use_rela_p |
00a97672 | 20729 | #define elf_backend_default_use_rela_p 1 |
906e58ca | 20730 | #undef elf_backend_want_plt_sym |
00a97672 | 20731 | #define elf_backend_want_plt_sym 1 |
906e58ca | 20732 | #undef ELF_MAXPAGESIZE |
00a97672 | 20733 | #define ELF_MAXPAGESIZE 0x1000 |
4e7fd91e PB |
20734 | |
20735 | #include "elf32-target.h" | |
20736 | ||
20737 | ||
21d799b5 NC |
20738 | /* Merge backend specific data from an object file to the output |
20739 | object file when linking. */ | |
20740 | ||
20741 | static bfd_boolean | |
50e03d47 | 20742 | elf32_arm_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
21d799b5 | 20743 | { |
50e03d47 | 20744 | bfd *obfd = info->output_bfd; |
21d799b5 NC |
20745 | flagword out_flags; |
20746 | flagword in_flags; | |
20747 | bfd_boolean flags_compatible = TRUE; | |
20748 | asection *sec; | |
20749 | ||
cc643b88 | 20750 | /* Check if we have the same endianness. */ |
50e03d47 | 20751 | if (! _bfd_generic_verify_endian_match (ibfd, info)) |
21d799b5 NC |
20752 | return FALSE; |
20753 | ||
20754 | if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd)) | |
20755 | return TRUE; | |
20756 | ||
50e03d47 | 20757 | if (!elf32_arm_merge_eabi_attributes (ibfd, info)) |
21d799b5 NC |
20758 | return FALSE; |
20759 | ||
20760 | /* The input BFD must have had its flags initialised. */ | |
20761 | /* The following seems bogus to me -- The flags are initialized in | |
20762 | the assembler but I don't think an elf_flags_init field is | |
20763 | written into the object. */ | |
20764 | /* BFD_ASSERT (elf_flags_init (ibfd)); */ | |
20765 | ||
20766 | in_flags = elf_elfheader (ibfd)->e_flags; | |
20767 | out_flags = elf_elfheader (obfd)->e_flags; | |
20768 | ||
20769 | /* In theory there is no reason why we couldn't handle this. However | |
20770 | in practice it isn't even close to working and there is no real | |
20771 | reason to want it. */ | |
20772 | if (EF_ARM_EABI_VERSION (in_flags) >= EF_ARM_EABI_VER4 | |
20773 | && !(ibfd->flags & DYNAMIC) | |
20774 | && (in_flags & EF_ARM_BE8)) | |
20775 | { | |
871b3ab2 | 20776 | _bfd_error_handler (_("error: %pB is already in final BE8 format"), |
21d799b5 NC |
20777 | ibfd); |
20778 | return FALSE; | |
20779 | } | |
20780 | ||
20781 | if (!elf_flags_init (obfd)) | |
20782 | { | |
20783 | /* If the input is the default architecture and had the default | |
20784 | flags then do not bother setting the flags for the output | |
20785 | architecture, instead allow future merges to do this. If no | |
20786 | future merges ever set these flags then they will retain their | |
99059e56 RM |
20787 | uninitialised values, which surprise surprise, correspond |
20788 | to the default values. */ | |
21d799b5 NC |
20789 | if (bfd_get_arch_info (ibfd)->the_default |
20790 | && elf_elfheader (ibfd)->e_flags == 0) | |
20791 | return TRUE; | |
20792 | ||
20793 | elf_flags_init (obfd) = TRUE; | |
20794 | elf_elfheader (obfd)->e_flags = in_flags; | |
20795 | ||
20796 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
20797 | && bfd_get_arch_info (obfd)->the_default) | |
20798 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); | |
20799 | ||
20800 | return TRUE; | |
20801 | } | |
20802 | ||
20803 | /* Determine what should happen if the input ARM architecture | |
20804 | does not match the output ARM architecture. */ | |
20805 | if (! bfd_arm_merge_machines (ibfd, obfd)) | |
20806 | return FALSE; | |
20807 | ||
20808 | /* Identical flags must be compatible. */ | |
20809 | if (in_flags == out_flags) | |
20810 | return TRUE; | |
20811 | ||
20812 | /* Check to see if the input BFD actually contains any sections. If | |
20813 | not, its flags may not have been initialised either, but it | |
20814 | cannot actually cause any incompatiblity. Do not short-circuit | |
20815 | dynamic objects; their section list may be emptied by | |
20816 | elf_link_add_object_symbols. | |
20817 | ||
20818 | Also check to see if there are no code sections in the input. | |
20819 | In this case there is no need to check for code specific flags. | |
20820 | XXX - do we need to worry about floating-point format compatability | |
20821 | in data sections ? */ | |
20822 | if (!(ibfd->flags & DYNAMIC)) | |
20823 | { | |
20824 | bfd_boolean null_input_bfd = TRUE; | |
20825 | bfd_boolean only_data_sections = TRUE; | |
20826 | ||
20827 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
20828 | { | |
20829 | /* Ignore synthetic glue sections. */ | |
20830 | if (strcmp (sec->name, ".glue_7") | |
20831 | && strcmp (sec->name, ".glue_7t")) | |
20832 | { | |
20833 | if ((bfd_get_section_flags (ibfd, sec) | |
20834 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
20835 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
99059e56 | 20836 | only_data_sections = FALSE; |
21d799b5 NC |
20837 | |
20838 | null_input_bfd = FALSE; | |
20839 | break; | |
20840 | } | |
20841 | } | |
20842 | ||
20843 | if (null_input_bfd || only_data_sections) | |
20844 | return TRUE; | |
20845 | } | |
20846 | ||
20847 | /* Complain about various flag mismatches. */ | |
20848 | if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags), | |
20849 | EF_ARM_EABI_VERSION (out_flags))) | |
20850 | { | |
20851 | _bfd_error_handler | |
90b6238f | 20852 | (_("error: source object %pB has EABI version %d, but target %pB has EABI version %d"), |
c08bb8dd AM |
20853 | ibfd, (in_flags & EF_ARM_EABIMASK) >> 24, |
20854 | obfd, (out_flags & EF_ARM_EABIMASK) >> 24); | |
21d799b5 NC |
20855 | return FALSE; |
20856 | } | |
20857 | ||
20858 | /* Not sure what needs to be checked for EABI versions >= 1. */ | |
20859 | /* VxWorks libraries do not use these flags. */ | |
20860 | if (get_elf_backend_data (obfd) != &elf32_arm_vxworks_bed | |
20861 | && get_elf_backend_data (ibfd) != &elf32_arm_vxworks_bed | |
20862 | && EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN) | |
20863 | { | |
20864 | if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26)) | |
20865 | { | |
20866 | _bfd_error_handler | |
871b3ab2 | 20867 | (_("error: %pB is compiled for APCS-%d, whereas target %pB uses APCS-%d"), |
c08bb8dd AM |
20868 | ibfd, in_flags & EF_ARM_APCS_26 ? 26 : 32, |
20869 | obfd, out_flags & EF_ARM_APCS_26 ? 26 : 32); | |
21d799b5 NC |
20870 | flags_compatible = FALSE; |
20871 | } | |
20872 | ||
20873 | if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT)) | |
20874 | { | |
20875 | if (in_flags & EF_ARM_APCS_FLOAT) | |
20876 | _bfd_error_handler | |
871b3ab2 | 20877 | (_("error: %pB passes floats in float registers, whereas %pB passes them in integer registers"), |
21d799b5 NC |
20878 | ibfd, obfd); |
20879 | else | |
20880 | _bfd_error_handler | |
871b3ab2 | 20881 | (_("error: %pB passes floats in integer registers, whereas %pB passes them in float registers"), |
21d799b5 NC |
20882 | ibfd, obfd); |
20883 | ||
20884 | flags_compatible = FALSE; | |
20885 | } | |
20886 | ||
20887 | if ((in_flags & EF_ARM_VFP_FLOAT) != (out_flags & EF_ARM_VFP_FLOAT)) | |
20888 | { | |
20889 | if (in_flags & EF_ARM_VFP_FLOAT) | |
20890 | _bfd_error_handler | |
90b6238f AM |
20891 | (_("error: %pB uses %s instructions, whereas %pB does not"), |
20892 | ibfd, "VFP", obfd); | |
21d799b5 NC |
20893 | else |
20894 | _bfd_error_handler | |
90b6238f AM |
20895 | (_("error: %pB uses %s instructions, whereas %pB does not"), |
20896 | ibfd, "FPA", obfd); | |
21d799b5 NC |
20897 | |
20898 | flags_compatible = FALSE; | |
20899 | } | |
20900 | ||
20901 | if ((in_flags & EF_ARM_MAVERICK_FLOAT) != (out_flags & EF_ARM_MAVERICK_FLOAT)) | |
20902 | { | |
20903 | if (in_flags & EF_ARM_MAVERICK_FLOAT) | |
20904 | _bfd_error_handler | |
90b6238f AM |
20905 | (_("error: %pB uses %s instructions, whereas %pB does not"), |
20906 | ibfd, "Maverick", obfd); | |
21d799b5 NC |
20907 | else |
20908 | _bfd_error_handler | |
90b6238f AM |
20909 | (_("error: %pB does not use %s instructions, whereas %pB does"), |
20910 | ibfd, "Maverick", obfd); | |
21d799b5 NC |
20911 | |
20912 | flags_compatible = FALSE; | |
20913 | } | |
20914 | ||
20915 | #ifdef EF_ARM_SOFT_FLOAT | |
20916 | if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT)) | |
20917 | { | |
20918 | /* We can allow interworking between code that is VFP format | |
20919 | layout, and uses either soft float or integer regs for | |
20920 | passing floating point arguments and results. We already | |
20921 | know that the APCS_FLOAT flags match; similarly for VFP | |
20922 | flags. */ | |
20923 | if ((in_flags & EF_ARM_APCS_FLOAT) != 0 | |
20924 | || (in_flags & EF_ARM_VFP_FLOAT) == 0) | |
20925 | { | |
20926 | if (in_flags & EF_ARM_SOFT_FLOAT) | |
20927 | _bfd_error_handler | |
871b3ab2 | 20928 | (_("error: %pB uses software FP, whereas %pB uses hardware FP"), |
21d799b5 NC |
20929 | ibfd, obfd); |
20930 | else | |
20931 | _bfd_error_handler | |
871b3ab2 | 20932 | (_("error: %pB uses hardware FP, whereas %pB uses software FP"), |
21d799b5 NC |
20933 | ibfd, obfd); |
20934 | ||
20935 | flags_compatible = FALSE; | |
20936 | } | |
20937 | } | |
20938 | #endif | |
20939 | ||
20940 | /* Interworking mismatch is only a warning. */ | |
20941 | if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK)) | |
20942 | { | |
20943 | if (in_flags & EF_ARM_INTERWORK) | |
20944 | { | |
20945 | _bfd_error_handler | |
90b6238f | 20946 | (_("warning: %pB supports interworking, whereas %pB does not"), |
21d799b5 NC |
20947 | ibfd, obfd); |
20948 | } | |
20949 | else | |
20950 | { | |
20951 | _bfd_error_handler | |
90b6238f | 20952 | (_("warning: %pB does not support interworking, whereas %pB does"), |
21d799b5 NC |
20953 | ibfd, obfd); |
20954 | } | |
20955 | } | |
20956 | } | |
20957 | ||
20958 | return flags_compatible; | |
20959 | } | |
20960 | ||
20961 | ||
906e58ca | 20962 | /* Symbian OS Targets. */ |
7f266840 | 20963 | |
07d6d2b8 AM |
20964 | #undef TARGET_LITTLE_SYM |
20965 | #define TARGET_LITTLE_SYM arm_elf32_symbian_le_vec | |
20966 | #undef TARGET_LITTLE_NAME | |
20967 | #define TARGET_LITTLE_NAME "elf32-littlearm-symbian" | |
20968 | #undef TARGET_BIG_SYM | |
20969 | #define TARGET_BIG_SYM arm_elf32_symbian_be_vec | |
20970 | #undef TARGET_BIG_NAME | |
20971 | #define TARGET_BIG_NAME "elf32-bigarm-symbian" | |
7f266840 DJ |
20972 | |
20973 | /* Like elf32_arm_link_hash_table_create -- but overrides | |
20974 | appropriately for Symbian OS. */ | |
906e58ca | 20975 | |
7f266840 DJ |
20976 | static struct bfd_link_hash_table * |
20977 | elf32_arm_symbian_link_hash_table_create (bfd *abfd) | |
20978 | { | |
20979 | struct bfd_link_hash_table *ret; | |
20980 | ||
20981 | ret = elf32_arm_link_hash_table_create (abfd); | |
20982 | if (ret) | |
20983 | { | |
20984 | struct elf32_arm_link_hash_table *htab | |
20985 | = (struct elf32_arm_link_hash_table *)ret; | |
20986 | /* There is no PLT header for Symbian OS. */ | |
20987 | htab->plt_header_size = 0; | |
95720a86 DJ |
20988 | /* The PLT entries are each one instruction and one word. */ |
20989 | htab->plt_entry_size = 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry); | |
7f266840 | 20990 | htab->symbian_p = 1; |
33bfe774 JB |
20991 | /* Symbian uses armv5t or above, so use_blx is always true. */ |
20992 | htab->use_blx = 1; | |
67687978 | 20993 | htab->root.is_relocatable_executable = 1; |
7f266840 DJ |
20994 | } |
20995 | return ret; | |
906e58ca | 20996 | } |
7f266840 | 20997 | |
b35d266b | 20998 | static const struct bfd_elf_special_section |
551b43fd | 20999 | elf32_arm_symbian_special_sections[] = |
7f266840 | 21000 | { |
5cd3778d MM |
21001 | /* In a BPABI executable, the dynamic linking sections do not go in |
21002 | the loadable read-only segment. The post-linker may wish to | |
21003 | refer to these sections, but they are not part of the final | |
21004 | program image. */ | |
07d6d2b8 AM |
21005 | { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, 0 }, |
21006 | { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, 0 }, | |
21007 | { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, 0 }, | |
21008 | { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, 0 }, | |
21009 | { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, 0 }, | |
5cd3778d MM |
21010 | /* These sections do not need to be writable as the SymbianOS |
21011 | postlinker will arrange things so that no dynamic relocation is | |
21012 | required. */ | |
07d6d2b8 AM |
21013 | { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC }, |
21014 | { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC }, | |
0112cd26 | 21015 | { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC }, |
07d6d2b8 | 21016 | { NULL, 0, 0, 0, 0 } |
7f266840 DJ |
21017 | }; |
21018 | ||
c3c76620 | 21019 | static void |
906e58ca | 21020 | elf32_arm_symbian_begin_write_processing (bfd *abfd, |
a4fd1a8e | 21021 | struct bfd_link_info *link_info) |
c3c76620 MM |
21022 | { |
21023 | /* BPABI objects are never loaded directly by an OS kernel; they are | |
21024 | processed by a postlinker first, into an OS-specific format. If | |
21025 | the D_PAGED bit is set on the file, BFD will align segments on | |
21026 | page boundaries, so that an OS can directly map the file. With | |
21027 | BPABI objects, that just results in wasted space. In addition, | |
21028 | because we clear the D_PAGED bit, map_sections_to_segments will | |
21029 | recognize that the program headers should not be mapped into any | |
21030 | loadable segment. */ | |
21031 | abfd->flags &= ~D_PAGED; | |
906e58ca | 21032 | elf32_arm_begin_write_processing (abfd, link_info); |
c3c76620 | 21033 | } |
7f266840 DJ |
21034 | |
21035 | static bfd_boolean | |
906e58ca | 21036 | elf32_arm_symbian_modify_segment_map (bfd *abfd, |
b294bdf8 | 21037 | struct bfd_link_info *info) |
7f266840 DJ |
21038 | { |
21039 | struct elf_segment_map *m; | |
21040 | asection *dynsec; | |
21041 | ||
7f266840 DJ |
21042 | /* BPABI shared libraries and executables should have a PT_DYNAMIC |
21043 | segment. However, because the .dynamic section is not marked | |
21044 | with SEC_LOAD, the generic ELF code will not create such a | |
21045 | segment. */ | |
21046 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); | |
21047 | if (dynsec) | |
21048 | { | |
12bd6957 | 21049 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
8ded5a0f AM |
21050 | if (m->p_type == PT_DYNAMIC) |
21051 | break; | |
21052 | ||
21053 | if (m == NULL) | |
21054 | { | |
21055 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); | |
12bd6957 AM |
21056 | m->next = elf_seg_map (abfd); |
21057 | elf_seg_map (abfd) = m; | |
8ded5a0f | 21058 | } |
7f266840 DJ |
21059 | } |
21060 | ||
b294bdf8 MM |
21061 | /* Also call the generic arm routine. */ |
21062 | return elf32_arm_modify_segment_map (abfd, info); | |
7f266840 DJ |
21063 | } |
21064 | ||
95720a86 DJ |
21065 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
21066 | or (bfd_vma) -1 if it should not be included. */ | |
21067 | ||
21068 | static bfd_vma | |
21069 | elf32_arm_symbian_plt_sym_val (bfd_vma i, const asection *plt, | |
21070 | const arelent *rel ATTRIBUTE_UNUSED) | |
21071 | { | |
21072 | return plt->vma + 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry) * i; | |
21073 | } | |
21074 | ||
8029a119 | 21075 | #undef elf32_bed |
7f266840 DJ |
21076 | #define elf32_bed elf32_arm_symbian_bed |
21077 | ||
21078 | /* The dynamic sections are not allocated on SymbianOS; the postlinker | |
21079 | will process them and then discard them. */ | |
906e58ca | 21080 | #undef ELF_DYNAMIC_SEC_FLAGS |
7f266840 DJ |
21081 | #define ELF_DYNAMIC_SEC_FLAGS \ |
21082 | (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED) | |
21083 | ||
9eaff861 | 21084 | #undef elf_backend_emit_relocs |
c3c76620 | 21085 | |
906e58ca NC |
21086 | #undef bfd_elf32_bfd_link_hash_table_create |
21087 | #define bfd_elf32_bfd_link_hash_table_create elf32_arm_symbian_link_hash_table_create | |
21088 | #undef elf_backend_special_sections | |
07d6d2b8 | 21089 | #define elf_backend_special_sections elf32_arm_symbian_special_sections |
906e58ca NC |
21090 | #undef elf_backend_begin_write_processing |
21091 | #define elf_backend_begin_write_processing elf32_arm_symbian_begin_write_processing | |
21092 | #undef elf_backend_final_write_processing | |
21093 | #define elf_backend_final_write_processing elf32_arm_final_write_processing | |
21094 | ||
21095 | #undef elf_backend_modify_segment_map | |
7f266840 DJ |
21096 | #define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map |
21097 | ||
21098 | /* There is no .got section for BPABI objects, and hence no header. */ | |
906e58ca | 21099 | #undef elf_backend_got_header_size |
7f266840 DJ |
21100 | #define elf_backend_got_header_size 0 |
21101 | ||
21102 | /* Similarly, there is no .got.plt section. */ | |
906e58ca | 21103 | #undef elf_backend_want_got_plt |
7f266840 DJ |
21104 | #define elf_backend_want_got_plt 0 |
21105 | ||
906e58ca | 21106 | #undef elf_backend_plt_sym_val |
95720a86 DJ |
21107 | #define elf_backend_plt_sym_val elf32_arm_symbian_plt_sym_val |
21108 | ||
906e58ca | 21109 | #undef elf_backend_may_use_rel_p |
00a97672 | 21110 | #define elf_backend_may_use_rel_p 1 |
906e58ca | 21111 | #undef elf_backend_may_use_rela_p |
00a97672 | 21112 | #define elf_backend_may_use_rela_p 0 |
906e58ca | 21113 | #undef elf_backend_default_use_rela_p |
00a97672 | 21114 | #define elf_backend_default_use_rela_p 0 |
906e58ca | 21115 | #undef elf_backend_want_plt_sym |
00a97672 | 21116 | #define elf_backend_want_plt_sym 0 |
64f52338 AM |
21117 | #undef elf_backend_dtrel_excludes_plt |
21118 | #define elf_backend_dtrel_excludes_plt 0 | |
906e58ca | 21119 | #undef ELF_MAXPAGESIZE |
00a97672 | 21120 | #define ELF_MAXPAGESIZE 0x8000 |
4e7fd91e | 21121 | |
7f266840 | 21122 | #include "elf32-target.h" |