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252b5132 | 1 | /* 32-bit ELF support for ARM |
6f2750fe | 2 | Copyright (C) 1998-2016 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" |
6034aab8 | 25 | #include "bfd_stdint.h" |
00a97672 | 26 | #include "libiberty.h" |
7f266840 DJ |
27 | #include "libbfd.h" |
28 | #include "elf-bfd.h" | |
b38cadfb | 29 | #include "elf-nacl.h" |
00a97672 | 30 | #include "elf-vxworks.h" |
ee065d83 | 31 | #include "elf/arm.h" |
7f266840 | 32 | |
00a97672 RS |
33 | /* Return the relocation section associated with NAME. HTAB is the |
34 | bfd's elf32_arm_link_hash_entry. */ | |
35 | #define RELOC_SECTION(HTAB, NAME) \ | |
36 | ((HTAB)->use_rel ? ".rel" NAME : ".rela" NAME) | |
37 | ||
38 | /* Return size of a relocation entry. HTAB is the bfd's | |
39 | elf32_arm_link_hash_entry. */ | |
40 | #define RELOC_SIZE(HTAB) \ | |
41 | ((HTAB)->use_rel \ | |
42 | ? sizeof (Elf32_External_Rel) \ | |
43 | : sizeof (Elf32_External_Rela)) | |
44 | ||
45 | /* Return function to swap relocations in. HTAB is the bfd's | |
46 | elf32_arm_link_hash_entry. */ | |
47 | #define SWAP_RELOC_IN(HTAB) \ | |
48 | ((HTAB)->use_rel \ | |
49 | ? bfd_elf32_swap_reloc_in \ | |
50 | : bfd_elf32_swap_reloca_in) | |
51 | ||
52 | /* Return function to swap relocations out. HTAB is the bfd's | |
53 | elf32_arm_link_hash_entry. */ | |
54 | #define SWAP_RELOC_OUT(HTAB) \ | |
55 | ((HTAB)->use_rel \ | |
56 | ? bfd_elf32_swap_reloc_out \ | |
57 | : bfd_elf32_swap_reloca_out) | |
58 | ||
7f266840 DJ |
59 | #define elf_info_to_howto 0 |
60 | #define elf_info_to_howto_rel elf32_arm_info_to_howto | |
61 | ||
62 | #define ARM_ELF_ABI_VERSION 0 | |
63 | #define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM | |
64 | ||
79f08007 YZ |
65 | /* The Adjusted Place, as defined by AAELF. */ |
66 | #define Pa(X) ((X) & 0xfffffffc) | |
67 | ||
3e6b1042 DJ |
68 | static bfd_boolean elf32_arm_write_section (bfd *output_bfd, |
69 | struct bfd_link_info *link_info, | |
70 | asection *sec, | |
71 | bfd_byte *contents); | |
72 | ||
7f266840 DJ |
73 | /* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g. |
74 | R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO | |
75 | in that slot. */ | |
76 | ||
c19d1205 | 77 | static reloc_howto_type elf32_arm_howto_table_1[] = |
7f266840 | 78 | { |
8029a119 | 79 | /* No relocation. */ |
7f266840 DJ |
80 | HOWTO (R_ARM_NONE, /* type */ |
81 | 0, /* rightshift */ | |
6346d5ca | 82 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
7f266840 DJ |
83 | 0, /* bitsize */ |
84 | FALSE, /* pc_relative */ | |
85 | 0, /* bitpos */ | |
86 | complain_overflow_dont,/* complain_on_overflow */ | |
87 | bfd_elf_generic_reloc, /* special_function */ | |
88 | "R_ARM_NONE", /* name */ | |
89 | FALSE, /* partial_inplace */ | |
90 | 0, /* src_mask */ | |
91 | 0, /* dst_mask */ | |
92 | FALSE), /* pcrel_offset */ | |
93 | ||
94 | HOWTO (R_ARM_PC24, /* type */ | |
95 | 2, /* rightshift */ | |
96 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
97 | 24, /* bitsize */ | |
98 | TRUE, /* pc_relative */ | |
99 | 0, /* bitpos */ | |
100 | complain_overflow_signed,/* complain_on_overflow */ | |
101 | bfd_elf_generic_reloc, /* special_function */ | |
102 | "R_ARM_PC24", /* name */ | |
103 | FALSE, /* partial_inplace */ | |
104 | 0x00ffffff, /* src_mask */ | |
105 | 0x00ffffff, /* dst_mask */ | |
106 | TRUE), /* pcrel_offset */ | |
107 | ||
108 | /* 32 bit absolute */ | |
109 | HOWTO (R_ARM_ABS32, /* type */ | |
110 | 0, /* rightshift */ | |
111 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
112 | 32, /* bitsize */ | |
113 | FALSE, /* pc_relative */ | |
114 | 0, /* bitpos */ | |
115 | complain_overflow_bitfield,/* complain_on_overflow */ | |
116 | bfd_elf_generic_reloc, /* special_function */ | |
117 | "R_ARM_ABS32", /* name */ | |
118 | FALSE, /* partial_inplace */ | |
119 | 0xffffffff, /* src_mask */ | |
120 | 0xffffffff, /* dst_mask */ | |
121 | FALSE), /* pcrel_offset */ | |
122 | ||
123 | /* standard 32bit pc-relative reloc */ | |
124 | HOWTO (R_ARM_REL32, /* type */ | |
125 | 0, /* rightshift */ | |
126 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
127 | 32, /* bitsize */ | |
128 | TRUE, /* pc_relative */ | |
129 | 0, /* bitpos */ | |
130 | complain_overflow_bitfield,/* complain_on_overflow */ | |
131 | bfd_elf_generic_reloc, /* special_function */ | |
132 | "R_ARM_REL32", /* name */ | |
133 | FALSE, /* partial_inplace */ | |
134 | 0xffffffff, /* src_mask */ | |
135 | 0xffffffff, /* dst_mask */ | |
136 | TRUE), /* pcrel_offset */ | |
137 | ||
c19d1205 | 138 | /* 8 bit absolute - R_ARM_LDR_PC_G0 in AAELF */ |
4962c51a | 139 | HOWTO (R_ARM_LDR_PC_G0, /* type */ |
7f266840 DJ |
140 | 0, /* rightshift */ |
141 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
4962c51a MS |
142 | 32, /* bitsize */ |
143 | TRUE, /* pc_relative */ | |
7f266840 | 144 | 0, /* bitpos */ |
4962c51a | 145 | complain_overflow_dont,/* complain_on_overflow */ |
7f266840 | 146 | bfd_elf_generic_reloc, /* special_function */ |
4962c51a | 147 | "R_ARM_LDR_PC_G0", /* name */ |
7f266840 | 148 | FALSE, /* partial_inplace */ |
4962c51a MS |
149 | 0xffffffff, /* src_mask */ |
150 | 0xffffffff, /* dst_mask */ | |
151 | TRUE), /* pcrel_offset */ | |
7f266840 DJ |
152 | |
153 | /* 16 bit absolute */ | |
154 | HOWTO (R_ARM_ABS16, /* type */ | |
155 | 0, /* rightshift */ | |
156 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
157 | 16, /* bitsize */ | |
158 | FALSE, /* pc_relative */ | |
159 | 0, /* bitpos */ | |
160 | complain_overflow_bitfield,/* complain_on_overflow */ | |
161 | bfd_elf_generic_reloc, /* special_function */ | |
162 | "R_ARM_ABS16", /* name */ | |
163 | FALSE, /* partial_inplace */ | |
164 | 0x0000ffff, /* src_mask */ | |
165 | 0x0000ffff, /* dst_mask */ | |
166 | FALSE), /* pcrel_offset */ | |
167 | ||
168 | /* 12 bit absolute */ | |
169 | HOWTO (R_ARM_ABS12, /* type */ | |
170 | 0, /* rightshift */ | |
171 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
172 | 12, /* bitsize */ | |
173 | FALSE, /* pc_relative */ | |
174 | 0, /* bitpos */ | |
175 | complain_overflow_bitfield,/* complain_on_overflow */ | |
176 | bfd_elf_generic_reloc, /* special_function */ | |
177 | "R_ARM_ABS12", /* name */ | |
178 | FALSE, /* partial_inplace */ | |
00a97672 RS |
179 | 0x00000fff, /* src_mask */ |
180 | 0x00000fff, /* dst_mask */ | |
7f266840 DJ |
181 | FALSE), /* pcrel_offset */ |
182 | ||
183 | HOWTO (R_ARM_THM_ABS5, /* type */ | |
184 | 6, /* rightshift */ | |
185 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
186 | 5, /* bitsize */ | |
187 | FALSE, /* pc_relative */ | |
188 | 0, /* bitpos */ | |
189 | complain_overflow_bitfield,/* complain_on_overflow */ | |
190 | bfd_elf_generic_reloc, /* special_function */ | |
191 | "R_ARM_THM_ABS5", /* name */ | |
192 | FALSE, /* partial_inplace */ | |
193 | 0x000007e0, /* src_mask */ | |
194 | 0x000007e0, /* dst_mask */ | |
195 | FALSE), /* pcrel_offset */ | |
196 | ||
197 | /* 8 bit absolute */ | |
198 | HOWTO (R_ARM_ABS8, /* type */ | |
199 | 0, /* rightshift */ | |
200 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
201 | 8, /* bitsize */ | |
202 | FALSE, /* pc_relative */ | |
203 | 0, /* bitpos */ | |
204 | complain_overflow_bitfield,/* complain_on_overflow */ | |
205 | bfd_elf_generic_reloc, /* special_function */ | |
206 | "R_ARM_ABS8", /* name */ | |
207 | FALSE, /* partial_inplace */ | |
208 | 0x000000ff, /* src_mask */ | |
209 | 0x000000ff, /* dst_mask */ | |
210 | FALSE), /* pcrel_offset */ | |
211 | ||
212 | HOWTO (R_ARM_SBREL32, /* type */ | |
213 | 0, /* rightshift */ | |
214 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
215 | 32, /* bitsize */ | |
216 | FALSE, /* pc_relative */ | |
217 | 0, /* bitpos */ | |
218 | complain_overflow_dont,/* complain_on_overflow */ | |
219 | bfd_elf_generic_reloc, /* special_function */ | |
220 | "R_ARM_SBREL32", /* name */ | |
221 | FALSE, /* partial_inplace */ | |
222 | 0xffffffff, /* src_mask */ | |
223 | 0xffffffff, /* dst_mask */ | |
224 | FALSE), /* pcrel_offset */ | |
225 | ||
c19d1205 | 226 | HOWTO (R_ARM_THM_CALL, /* type */ |
7f266840 DJ |
227 | 1, /* rightshift */ |
228 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
f6ebfac0 | 229 | 24, /* bitsize */ |
7f266840 DJ |
230 | TRUE, /* pc_relative */ |
231 | 0, /* bitpos */ | |
232 | complain_overflow_signed,/* complain_on_overflow */ | |
233 | bfd_elf_generic_reloc, /* special_function */ | |
c19d1205 | 234 | "R_ARM_THM_CALL", /* name */ |
7f266840 | 235 | FALSE, /* partial_inplace */ |
7f6ab9f8 AM |
236 | 0x07ff2fff, /* src_mask */ |
237 | 0x07ff2fff, /* dst_mask */ | |
7f266840 DJ |
238 | TRUE), /* pcrel_offset */ |
239 | ||
240 | HOWTO (R_ARM_THM_PC8, /* type */ | |
241 | 1, /* rightshift */ | |
242 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
243 | 8, /* bitsize */ | |
244 | TRUE, /* pc_relative */ | |
245 | 0, /* bitpos */ | |
246 | complain_overflow_signed,/* complain_on_overflow */ | |
247 | bfd_elf_generic_reloc, /* special_function */ | |
248 | "R_ARM_THM_PC8", /* name */ | |
249 | FALSE, /* partial_inplace */ | |
250 | 0x000000ff, /* src_mask */ | |
251 | 0x000000ff, /* dst_mask */ | |
252 | TRUE), /* pcrel_offset */ | |
253 | ||
c19d1205 | 254 | HOWTO (R_ARM_BREL_ADJ, /* type */ |
7f266840 DJ |
255 | 1, /* rightshift */ |
256 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
c19d1205 ZW |
257 | 32, /* bitsize */ |
258 | FALSE, /* pc_relative */ | |
7f266840 DJ |
259 | 0, /* bitpos */ |
260 | complain_overflow_signed,/* complain_on_overflow */ | |
261 | bfd_elf_generic_reloc, /* special_function */ | |
c19d1205 | 262 | "R_ARM_BREL_ADJ", /* name */ |
7f266840 | 263 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
264 | 0xffffffff, /* src_mask */ |
265 | 0xffffffff, /* dst_mask */ | |
266 | FALSE), /* pcrel_offset */ | |
7f266840 | 267 | |
0855e32b | 268 | HOWTO (R_ARM_TLS_DESC, /* type */ |
7f266840 | 269 | 0, /* rightshift */ |
0855e32b NS |
270 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
271 | 32, /* bitsize */ | |
7f266840 DJ |
272 | FALSE, /* pc_relative */ |
273 | 0, /* bitpos */ | |
0855e32b | 274 | complain_overflow_bitfield,/* complain_on_overflow */ |
7f266840 | 275 | bfd_elf_generic_reloc, /* special_function */ |
0855e32b | 276 | "R_ARM_TLS_DESC", /* name */ |
7f266840 | 277 | FALSE, /* partial_inplace */ |
0855e32b NS |
278 | 0xffffffff, /* src_mask */ |
279 | 0xffffffff, /* dst_mask */ | |
7f266840 DJ |
280 | FALSE), /* pcrel_offset */ |
281 | ||
282 | HOWTO (R_ARM_THM_SWI8, /* type */ | |
283 | 0, /* rightshift */ | |
284 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
285 | 0, /* bitsize */ | |
286 | FALSE, /* pc_relative */ | |
287 | 0, /* bitpos */ | |
288 | complain_overflow_signed,/* complain_on_overflow */ | |
289 | bfd_elf_generic_reloc, /* special_function */ | |
290 | "R_ARM_SWI8", /* name */ | |
291 | FALSE, /* partial_inplace */ | |
292 | 0x00000000, /* src_mask */ | |
293 | 0x00000000, /* dst_mask */ | |
294 | FALSE), /* pcrel_offset */ | |
295 | ||
296 | /* BLX instruction for the ARM. */ | |
297 | HOWTO (R_ARM_XPC25, /* type */ | |
298 | 2, /* rightshift */ | |
299 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
7f6ab9f8 | 300 | 24, /* bitsize */ |
7f266840 DJ |
301 | TRUE, /* pc_relative */ |
302 | 0, /* bitpos */ | |
303 | complain_overflow_signed,/* complain_on_overflow */ | |
304 | bfd_elf_generic_reloc, /* special_function */ | |
305 | "R_ARM_XPC25", /* name */ | |
306 | FALSE, /* partial_inplace */ | |
307 | 0x00ffffff, /* src_mask */ | |
308 | 0x00ffffff, /* dst_mask */ | |
309 | TRUE), /* pcrel_offset */ | |
310 | ||
311 | /* BLX instruction for the Thumb. */ | |
312 | HOWTO (R_ARM_THM_XPC22, /* type */ | |
313 | 2, /* rightshift */ | |
314 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
7f6ab9f8 | 315 | 24, /* bitsize */ |
7f266840 DJ |
316 | TRUE, /* pc_relative */ |
317 | 0, /* bitpos */ | |
318 | complain_overflow_signed,/* complain_on_overflow */ | |
319 | bfd_elf_generic_reloc, /* special_function */ | |
320 | "R_ARM_THM_XPC22", /* name */ | |
321 | FALSE, /* partial_inplace */ | |
7f6ab9f8 AM |
322 | 0x07ff2fff, /* src_mask */ |
323 | 0x07ff2fff, /* dst_mask */ | |
7f266840 DJ |
324 | TRUE), /* pcrel_offset */ |
325 | ||
ba93b8ac | 326 | /* Dynamic TLS relocations. */ |
7f266840 | 327 | |
ba93b8ac | 328 | HOWTO (R_ARM_TLS_DTPMOD32, /* type */ |
99059e56 RM |
329 | 0, /* rightshift */ |
330 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
331 | 32, /* bitsize */ | |
332 | FALSE, /* pc_relative */ | |
333 | 0, /* bitpos */ | |
334 | complain_overflow_bitfield,/* complain_on_overflow */ | |
335 | bfd_elf_generic_reloc, /* special_function */ | |
336 | "R_ARM_TLS_DTPMOD32", /* name */ | |
337 | TRUE, /* partial_inplace */ | |
338 | 0xffffffff, /* src_mask */ | |
339 | 0xffffffff, /* dst_mask */ | |
340 | FALSE), /* pcrel_offset */ | |
7f266840 | 341 | |
ba93b8ac | 342 | HOWTO (R_ARM_TLS_DTPOFF32, /* type */ |
99059e56 RM |
343 | 0, /* rightshift */ |
344 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
345 | 32, /* bitsize */ | |
346 | FALSE, /* pc_relative */ | |
347 | 0, /* bitpos */ | |
348 | complain_overflow_bitfield,/* complain_on_overflow */ | |
349 | bfd_elf_generic_reloc, /* special_function */ | |
350 | "R_ARM_TLS_DTPOFF32", /* name */ | |
351 | TRUE, /* partial_inplace */ | |
352 | 0xffffffff, /* src_mask */ | |
353 | 0xffffffff, /* dst_mask */ | |
354 | FALSE), /* pcrel_offset */ | |
7f266840 | 355 | |
ba93b8ac | 356 | HOWTO (R_ARM_TLS_TPOFF32, /* type */ |
99059e56 RM |
357 | 0, /* rightshift */ |
358 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
359 | 32, /* bitsize */ | |
360 | FALSE, /* pc_relative */ | |
361 | 0, /* bitpos */ | |
362 | complain_overflow_bitfield,/* complain_on_overflow */ | |
363 | bfd_elf_generic_reloc, /* special_function */ | |
364 | "R_ARM_TLS_TPOFF32", /* name */ | |
365 | TRUE, /* partial_inplace */ | |
366 | 0xffffffff, /* src_mask */ | |
367 | 0xffffffff, /* dst_mask */ | |
368 | FALSE), /* pcrel_offset */ | |
7f266840 DJ |
369 | |
370 | /* Relocs used in ARM Linux */ | |
371 | ||
372 | HOWTO (R_ARM_COPY, /* type */ | |
99059e56 RM |
373 | 0, /* rightshift */ |
374 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
375 | 32, /* bitsize */ | |
376 | FALSE, /* pc_relative */ | |
377 | 0, /* bitpos */ | |
378 | complain_overflow_bitfield,/* complain_on_overflow */ | |
379 | bfd_elf_generic_reloc, /* special_function */ | |
380 | "R_ARM_COPY", /* name */ | |
381 | TRUE, /* partial_inplace */ | |
382 | 0xffffffff, /* src_mask */ | |
383 | 0xffffffff, /* dst_mask */ | |
384 | FALSE), /* pcrel_offset */ | |
7f266840 DJ |
385 | |
386 | HOWTO (R_ARM_GLOB_DAT, /* type */ | |
99059e56 RM |
387 | 0, /* rightshift */ |
388 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
389 | 32, /* bitsize */ | |
390 | FALSE, /* pc_relative */ | |
391 | 0, /* bitpos */ | |
392 | complain_overflow_bitfield,/* complain_on_overflow */ | |
393 | bfd_elf_generic_reloc, /* special_function */ | |
394 | "R_ARM_GLOB_DAT", /* name */ | |
395 | TRUE, /* partial_inplace */ | |
396 | 0xffffffff, /* src_mask */ | |
397 | 0xffffffff, /* dst_mask */ | |
398 | FALSE), /* pcrel_offset */ | |
7f266840 DJ |
399 | |
400 | HOWTO (R_ARM_JUMP_SLOT, /* type */ | |
99059e56 RM |
401 | 0, /* rightshift */ |
402 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
403 | 32, /* bitsize */ | |
404 | FALSE, /* pc_relative */ | |
405 | 0, /* bitpos */ | |
406 | complain_overflow_bitfield,/* complain_on_overflow */ | |
407 | bfd_elf_generic_reloc, /* special_function */ | |
408 | "R_ARM_JUMP_SLOT", /* name */ | |
409 | TRUE, /* partial_inplace */ | |
410 | 0xffffffff, /* src_mask */ | |
411 | 0xffffffff, /* dst_mask */ | |
412 | FALSE), /* pcrel_offset */ | |
7f266840 DJ |
413 | |
414 | HOWTO (R_ARM_RELATIVE, /* type */ | |
99059e56 RM |
415 | 0, /* rightshift */ |
416 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
417 | 32, /* bitsize */ | |
418 | FALSE, /* pc_relative */ | |
419 | 0, /* bitpos */ | |
420 | complain_overflow_bitfield,/* complain_on_overflow */ | |
421 | bfd_elf_generic_reloc, /* special_function */ | |
422 | "R_ARM_RELATIVE", /* name */ | |
423 | TRUE, /* partial_inplace */ | |
424 | 0xffffffff, /* src_mask */ | |
425 | 0xffffffff, /* dst_mask */ | |
426 | FALSE), /* pcrel_offset */ | |
7f266840 | 427 | |
c19d1205 | 428 | HOWTO (R_ARM_GOTOFF32, /* type */ |
99059e56 RM |
429 | 0, /* rightshift */ |
430 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
431 | 32, /* bitsize */ | |
432 | FALSE, /* pc_relative */ | |
433 | 0, /* bitpos */ | |
434 | complain_overflow_bitfield,/* complain_on_overflow */ | |
435 | bfd_elf_generic_reloc, /* special_function */ | |
436 | "R_ARM_GOTOFF32", /* name */ | |
437 | TRUE, /* partial_inplace */ | |
438 | 0xffffffff, /* src_mask */ | |
439 | 0xffffffff, /* dst_mask */ | |
440 | FALSE), /* pcrel_offset */ | |
7f266840 DJ |
441 | |
442 | HOWTO (R_ARM_GOTPC, /* type */ | |
99059e56 RM |
443 | 0, /* rightshift */ |
444 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
445 | 32, /* bitsize */ | |
446 | TRUE, /* pc_relative */ | |
447 | 0, /* bitpos */ | |
448 | complain_overflow_bitfield,/* complain_on_overflow */ | |
449 | bfd_elf_generic_reloc, /* special_function */ | |
450 | "R_ARM_GOTPC", /* name */ | |
451 | TRUE, /* partial_inplace */ | |
452 | 0xffffffff, /* src_mask */ | |
453 | 0xffffffff, /* dst_mask */ | |
454 | TRUE), /* pcrel_offset */ | |
7f266840 DJ |
455 | |
456 | HOWTO (R_ARM_GOT32, /* type */ | |
99059e56 RM |
457 | 0, /* rightshift */ |
458 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
459 | 32, /* bitsize */ | |
460 | FALSE, /* pc_relative */ | |
461 | 0, /* bitpos */ | |
462 | complain_overflow_bitfield,/* complain_on_overflow */ | |
463 | bfd_elf_generic_reloc, /* special_function */ | |
464 | "R_ARM_GOT32", /* name */ | |
465 | TRUE, /* partial_inplace */ | |
466 | 0xffffffff, /* src_mask */ | |
467 | 0xffffffff, /* dst_mask */ | |
468 | FALSE), /* pcrel_offset */ | |
7f266840 DJ |
469 | |
470 | HOWTO (R_ARM_PLT32, /* type */ | |
99059e56 RM |
471 | 2, /* rightshift */ |
472 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
473 | 24, /* bitsize */ | |
474 | TRUE, /* pc_relative */ | |
475 | 0, /* bitpos */ | |
476 | complain_overflow_bitfield,/* complain_on_overflow */ | |
477 | bfd_elf_generic_reloc, /* special_function */ | |
478 | "R_ARM_PLT32", /* name */ | |
479 | FALSE, /* partial_inplace */ | |
480 | 0x00ffffff, /* src_mask */ | |
481 | 0x00ffffff, /* dst_mask */ | |
482 | TRUE), /* pcrel_offset */ | |
7f266840 DJ |
483 | |
484 | HOWTO (R_ARM_CALL, /* type */ | |
485 | 2, /* rightshift */ | |
486 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
487 | 24, /* bitsize */ | |
488 | TRUE, /* pc_relative */ | |
489 | 0, /* bitpos */ | |
490 | complain_overflow_signed,/* complain_on_overflow */ | |
491 | bfd_elf_generic_reloc, /* special_function */ | |
492 | "R_ARM_CALL", /* name */ | |
493 | FALSE, /* partial_inplace */ | |
494 | 0x00ffffff, /* src_mask */ | |
495 | 0x00ffffff, /* dst_mask */ | |
496 | TRUE), /* pcrel_offset */ | |
497 | ||
498 | HOWTO (R_ARM_JUMP24, /* type */ | |
499 | 2, /* rightshift */ | |
500 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
501 | 24, /* bitsize */ | |
502 | TRUE, /* pc_relative */ | |
503 | 0, /* bitpos */ | |
504 | complain_overflow_signed,/* complain_on_overflow */ | |
505 | bfd_elf_generic_reloc, /* special_function */ | |
506 | "R_ARM_JUMP24", /* name */ | |
507 | FALSE, /* partial_inplace */ | |
508 | 0x00ffffff, /* src_mask */ | |
509 | 0x00ffffff, /* dst_mask */ | |
510 | TRUE), /* pcrel_offset */ | |
511 | ||
c19d1205 ZW |
512 | HOWTO (R_ARM_THM_JUMP24, /* type */ |
513 | 1, /* rightshift */ | |
514 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
515 | 24, /* bitsize */ | |
516 | TRUE, /* pc_relative */ | |
7f266840 | 517 | 0, /* bitpos */ |
c19d1205 | 518 | complain_overflow_signed,/* complain_on_overflow */ |
7f266840 | 519 | bfd_elf_generic_reloc, /* special_function */ |
c19d1205 | 520 | "R_ARM_THM_JUMP24", /* name */ |
7f266840 | 521 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
522 | 0x07ff2fff, /* src_mask */ |
523 | 0x07ff2fff, /* dst_mask */ | |
524 | TRUE), /* pcrel_offset */ | |
7f266840 | 525 | |
c19d1205 | 526 | HOWTO (R_ARM_BASE_ABS, /* type */ |
7f266840 | 527 | 0, /* rightshift */ |
c19d1205 ZW |
528 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
529 | 32, /* bitsize */ | |
7f266840 DJ |
530 | FALSE, /* pc_relative */ |
531 | 0, /* bitpos */ | |
532 | complain_overflow_dont,/* complain_on_overflow */ | |
533 | bfd_elf_generic_reloc, /* special_function */ | |
c19d1205 | 534 | "R_ARM_BASE_ABS", /* name */ |
7f266840 | 535 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
536 | 0xffffffff, /* src_mask */ |
537 | 0xffffffff, /* dst_mask */ | |
7f266840 DJ |
538 | FALSE), /* pcrel_offset */ |
539 | ||
540 | HOWTO (R_ARM_ALU_PCREL7_0, /* type */ | |
541 | 0, /* rightshift */ | |
542 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
543 | 12, /* bitsize */ | |
544 | TRUE, /* pc_relative */ | |
545 | 0, /* bitpos */ | |
546 | complain_overflow_dont,/* complain_on_overflow */ | |
547 | bfd_elf_generic_reloc, /* special_function */ | |
548 | "R_ARM_ALU_PCREL_7_0", /* name */ | |
549 | FALSE, /* partial_inplace */ | |
550 | 0x00000fff, /* src_mask */ | |
551 | 0x00000fff, /* dst_mask */ | |
552 | TRUE), /* pcrel_offset */ | |
553 | ||
554 | HOWTO (R_ARM_ALU_PCREL15_8, /* type */ | |
555 | 0, /* rightshift */ | |
556 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
557 | 12, /* bitsize */ | |
558 | TRUE, /* pc_relative */ | |
559 | 8, /* bitpos */ | |
560 | complain_overflow_dont,/* complain_on_overflow */ | |
561 | bfd_elf_generic_reloc, /* special_function */ | |
562 | "R_ARM_ALU_PCREL_15_8",/* name */ | |
563 | FALSE, /* partial_inplace */ | |
564 | 0x00000fff, /* src_mask */ | |
565 | 0x00000fff, /* dst_mask */ | |
566 | TRUE), /* pcrel_offset */ | |
567 | ||
568 | HOWTO (R_ARM_ALU_PCREL23_15, /* type */ | |
569 | 0, /* rightshift */ | |
570 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
571 | 12, /* bitsize */ | |
572 | TRUE, /* pc_relative */ | |
573 | 16, /* bitpos */ | |
574 | complain_overflow_dont,/* complain_on_overflow */ | |
575 | bfd_elf_generic_reloc, /* special_function */ | |
576 | "R_ARM_ALU_PCREL_23_15",/* name */ | |
577 | FALSE, /* partial_inplace */ | |
578 | 0x00000fff, /* src_mask */ | |
579 | 0x00000fff, /* dst_mask */ | |
580 | TRUE), /* pcrel_offset */ | |
581 | ||
582 | HOWTO (R_ARM_LDR_SBREL_11_0, /* type */ | |
583 | 0, /* rightshift */ | |
584 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
585 | 12, /* bitsize */ | |
586 | FALSE, /* pc_relative */ | |
587 | 0, /* bitpos */ | |
588 | complain_overflow_dont,/* complain_on_overflow */ | |
589 | bfd_elf_generic_reloc, /* special_function */ | |
590 | "R_ARM_LDR_SBREL_11_0",/* name */ | |
591 | FALSE, /* partial_inplace */ | |
592 | 0x00000fff, /* src_mask */ | |
593 | 0x00000fff, /* dst_mask */ | |
594 | FALSE), /* pcrel_offset */ | |
595 | ||
596 | HOWTO (R_ARM_ALU_SBREL_19_12, /* type */ | |
597 | 0, /* rightshift */ | |
598 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
599 | 8, /* bitsize */ | |
600 | FALSE, /* pc_relative */ | |
601 | 12, /* bitpos */ | |
602 | complain_overflow_dont,/* complain_on_overflow */ | |
603 | bfd_elf_generic_reloc, /* special_function */ | |
604 | "R_ARM_ALU_SBREL_19_12",/* name */ | |
605 | FALSE, /* partial_inplace */ | |
606 | 0x000ff000, /* src_mask */ | |
607 | 0x000ff000, /* dst_mask */ | |
608 | FALSE), /* pcrel_offset */ | |
609 | ||
610 | HOWTO (R_ARM_ALU_SBREL_27_20, /* type */ | |
611 | 0, /* rightshift */ | |
612 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
613 | 8, /* bitsize */ | |
614 | FALSE, /* pc_relative */ | |
615 | 20, /* bitpos */ | |
616 | complain_overflow_dont,/* complain_on_overflow */ | |
617 | bfd_elf_generic_reloc, /* special_function */ | |
618 | "R_ARM_ALU_SBREL_27_20",/* name */ | |
619 | FALSE, /* partial_inplace */ | |
620 | 0x0ff00000, /* src_mask */ | |
621 | 0x0ff00000, /* dst_mask */ | |
622 | FALSE), /* pcrel_offset */ | |
623 | ||
624 | HOWTO (R_ARM_TARGET1, /* type */ | |
625 | 0, /* rightshift */ | |
626 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
627 | 32, /* bitsize */ | |
628 | FALSE, /* pc_relative */ | |
629 | 0, /* bitpos */ | |
630 | complain_overflow_dont,/* complain_on_overflow */ | |
631 | bfd_elf_generic_reloc, /* special_function */ | |
632 | "R_ARM_TARGET1", /* name */ | |
633 | FALSE, /* partial_inplace */ | |
634 | 0xffffffff, /* src_mask */ | |
635 | 0xffffffff, /* dst_mask */ | |
636 | FALSE), /* pcrel_offset */ | |
637 | ||
638 | HOWTO (R_ARM_ROSEGREL32, /* type */ | |
639 | 0, /* rightshift */ | |
640 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
641 | 32, /* bitsize */ | |
642 | FALSE, /* pc_relative */ | |
643 | 0, /* bitpos */ | |
644 | complain_overflow_dont,/* complain_on_overflow */ | |
645 | bfd_elf_generic_reloc, /* special_function */ | |
646 | "R_ARM_ROSEGREL32", /* name */ | |
647 | FALSE, /* partial_inplace */ | |
648 | 0xffffffff, /* src_mask */ | |
649 | 0xffffffff, /* dst_mask */ | |
650 | FALSE), /* pcrel_offset */ | |
651 | ||
652 | HOWTO (R_ARM_V4BX, /* type */ | |
653 | 0, /* rightshift */ | |
654 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
655 | 32, /* bitsize */ | |
656 | FALSE, /* pc_relative */ | |
657 | 0, /* bitpos */ | |
658 | complain_overflow_dont,/* complain_on_overflow */ | |
659 | bfd_elf_generic_reloc, /* special_function */ | |
660 | "R_ARM_V4BX", /* name */ | |
661 | FALSE, /* partial_inplace */ | |
662 | 0xffffffff, /* src_mask */ | |
663 | 0xffffffff, /* dst_mask */ | |
664 | FALSE), /* pcrel_offset */ | |
665 | ||
666 | HOWTO (R_ARM_TARGET2, /* type */ | |
667 | 0, /* rightshift */ | |
668 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
669 | 32, /* bitsize */ | |
670 | FALSE, /* pc_relative */ | |
671 | 0, /* bitpos */ | |
672 | complain_overflow_signed,/* complain_on_overflow */ | |
673 | bfd_elf_generic_reloc, /* special_function */ | |
674 | "R_ARM_TARGET2", /* name */ | |
675 | FALSE, /* partial_inplace */ | |
676 | 0xffffffff, /* src_mask */ | |
677 | 0xffffffff, /* dst_mask */ | |
678 | TRUE), /* pcrel_offset */ | |
679 | ||
680 | HOWTO (R_ARM_PREL31, /* type */ | |
681 | 0, /* rightshift */ | |
682 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
683 | 31, /* bitsize */ | |
684 | TRUE, /* pc_relative */ | |
685 | 0, /* bitpos */ | |
686 | complain_overflow_signed,/* complain_on_overflow */ | |
687 | bfd_elf_generic_reloc, /* special_function */ | |
688 | "R_ARM_PREL31", /* name */ | |
689 | FALSE, /* partial_inplace */ | |
690 | 0x7fffffff, /* src_mask */ | |
691 | 0x7fffffff, /* dst_mask */ | |
692 | TRUE), /* pcrel_offset */ | |
c19d1205 ZW |
693 | |
694 | HOWTO (R_ARM_MOVW_ABS_NC, /* type */ | |
695 | 0, /* rightshift */ | |
696 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
697 | 16, /* bitsize */ | |
698 | FALSE, /* pc_relative */ | |
699 | 0, /* bitpos */ | |
700 | complain_overflow_dont,/* complain_on_overflow */ | |
701 | bfd_elf_generic_reloc, /* special_function */ | |
702 | "R_ARM_MOVW_ABS_NC", /* name */ | |
703 | FALSE, /* partial_inplace */ | |
39623e12 PB |
704 | 0x000f0fff, /* src_mask */ |
705 | 0x000f0fff, /* dst_mask */ | |
c19d1205 ZW |
706 | FALSE), /* pcrel_offset */ |
707 | ||
708 | HOWTO (R_ARM_MOVT_ABS, /* type */ | |
709 | 0, /* rightshift */ | |
710 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
711 | 16, /* bitsize */ | |
712 | FALSE, /* pc_relative */ | |
713 | 0, /* bitpos */ | |
714 | complain_overflow_bitfield,/* complain_on_overflow */ | |
715 | bfd_elf_generic_reloc, /* special_function */ | |
716 | "R_ARM_MOVT_ABS", /* name */ | |
717 | FALSE, /* partial_inplace */ | |
39623e12 PB |
718 | 0x000f0fff, /* src_mask */ |
719 | 0x000f0fff, /* dst_mask */ | |
c19d1205 ZW |
720 | FALSE), /* pcrel_offset */ |
721 | ||
722 | HOWTO (R_ARM_MOVW_PREL_NC, /* type */ | |
723 | 0, /* rightshift */ | |
724 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
725 | 16, /* bitsize */ | |
726 | TRUE, /* pc_relative */ | |
727 | 0, /* bitpos */ | |
728 | complain_overflow_dont,/* complain_on_overflow */ | |
729 | bfd_elf_generic_reloc, /* special_function */ | |
730 | "R_ARM_MOVW_PREL_NC", /* name */ | |
731 | FALSE, /* partial_inplace */ | |
39623e12 PB |
732 | 0x000f0fff, /* src_mask */ |
733 | 0x000f0fff, /* dst_mask */ | |
c19d1205 ZW |
734 | TRUE), /* pcrel_offset */ |
735 | ||
736 | HOWTO (R_ARM_MOVT_PREL, /* type */ | |
737 | 0, /* rightshift */ | |
738 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
739 | 16, /* bitsize */ | |
740 | TRUE, /* pc_relative */ | |
741 | 0, /* bitpos */ | |
742 | complain_overflow_bitfield,/* complain_on_overflow */ | |
743 | bfd_elf_generic_reloc, /* special_function */ | |
744 | "R_ARM_MOVT_PREL", /* name */ | |
745 | FALSE, /* partial_inplace */ | |
39623e12 PB |
746 | 0x000f0fff, /* src_mask */ |
747 | 0x000f0fff, /* dst_mask */ | |
c19d1205 ZW |
748 | TRUE), /* pcrel_offset */ |
749 | ||
750 | HOWTO (R_ARM_THM_MOVW_ABS_NC, /* type */ | |
751 | 0, /* rightshift */ | |
752 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
753 | 16, /* bitsize */ | |
754 | FALSE, /* pc_relative */ | |
755 | 0, /* bitpos */ | |
756 | complain_overflow_dont,/* complain_on_overflow */ | |
757 | bfd_elf_generic_reloc, /* special_function */ | |
758 | "R_ARM_THM_MOVW_ABS_NC",/* name */ | |
759 | FALSE, /* partial_inplace */ | |
760 | 0x040f70ff, /* src_mask */ | |
761 | 0x040f70ff, /* dst_mask */ | |
762 | FALSE), /* pcrel_offset */ | |
763 | ||
764 | HOWTO (R_ARM_THM_MOVT_ABS, /* type */ | |
765 | 0, /* rightshift */ | |
766 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
767 | 16, /* bitsize */ | |
768 | FALSE, /* pc_relative */ | |
769 | 0, /* bitpos */ | |
770 | complain_overflow_bitfield,/* complain_on_overflow */ | |
771 | bfd_elf_generic_reloc, /* special_function */ | |
772 | "R_ARM_THM_MOVT_ABS", /* name */ | |
773 | FALSE, /* partial_inplace */ | |
774 | 0x040f70ff, /* src_mask */ | |
775 | 0x040f70ff, /* dst_mask */ | |
776 | FALSE), /* pcrel_offset */ | |
777 | ||
778 | HOWTO (R_ARM_THM_MOVW_PREL_NC,/* type */ | |
779 | 0, /* rightshift */ | |
780 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
781 | 16, /* bitsize */ | |
782 | TRUE, /* pc_relative */ | |
783 | 0, /* bitpos */ | |
784 | complain_overflow_dont,/* complain_on_overflow */ | |
785 | bfd_elf_generic_reloc, /* special_function */ | |
786 | "R_ARM_THM_MOVW_PREL_NC",/* name */ | |
787 | FALSE, /* partial_inplace */ | |
788 | 0x040f70ff, /* src_mask */ | |
789 | 0x040f70ff, /* dst_mask */ | |
790 | TRUE), /* pcrel_offset */ | |
791 | ||
792 | HOWTO (R_ARM_THM_MOVT_PREL, /* type */ | |
793 | 0, /* rightshift */ | |
794 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
795 | 16, /* bitsize */ | |
796 | TRUE, /* pc_relative */ | |
797 | 0, /* bitpos */ | |
798 | complain_overflow_bitfield,/* complain_on_overflow */ | |
799 | bfd_elf_generic_reloc, /* special_function */ | |
800 | "R_ARM_THM_MOVT_PREL", /* name */ | |
801 | FALSE, /* partial_inplace */ | |
802 | 0x040f70ff, /* src_mask */ | |
803 | 0x040f70ff, /* dst_mask */ | |
804 | TRUE), /* pcrel_offset */ | |
805 | ||
806 | HOWTO (R_ARM_THM_JUMP19, /* type */ | |
807 | 1, /* rightshift */ | |
808 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
809 | 19, /* bitsize */ | |
810 | TRUE, /* pc_relative */ | |
811 | 0, /* bitpos */ | |
812 | complain_overflow_signed,/* complain_on_overflow */ | |
813 | bfd_elf_generic_reloc, /* special_function */ | |
814 | "R_ARM_THM_JUMP19", /* name */ | |
815 | FALSE, /* partial_inplace */ | |
816 | 0x043f2fff, /* src_mask */ | |
817 | 0x043f2fff, /* dst_mask */ | |
818 | TRUE), /* pcrel_offset */ | |
819 | ||
820 | HOWTO (R_ARM_THM_JUMP6, /* type */ | |
821 | 1, /* rightshift */ | |
822 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
823 | 6, /* bitsize */ | |
824 | TRUE, /* pc_relative */ | |
825 | 0, /* bitpos */ | |
826 | complain_overflow_unsigned,/* complain_on_overflow */ | |
827 | bfd_elf_generic_reloc, /* special_function */ | |
828 | "R_ARM_THM_JUMP6", /* name */ | |
829 | FALSE, /* partial_inplace */ | |
830 | 0x02f8, /* src_mask */ | |
831 | 0x02f8, /* dst_mask */ | |
832 | TRUE), /* pcrel_offset */ | |
833 | ||
834 | /* These are declared as 13-bit signed relocations because we can | |
835 | address -4095 .. 4095(base) by altering ADDW to SUBW or vice | |
836 | versa. */ | |
837 | HOWTO (R_ARM_THM_ALU_PREL_11_0,/* type */ | |
838 | 0, /* rightshift */ | |
839 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
840 | 13, /* bitsize */ | |
841 | TRUE, /* pc_relative */ | |
842 | 0, /* bitpos */ | |
2cab6cc3 | 843 | complain_overflow_dont,/* complain_on_overflow */ |
c19d1205 ZW |
844 | bfd_elf_generic_reloc, /* special_function */ |
845 | "R_ARM_THM_ALU_PREL_11_0",/* name */ | |
846 | FALSE, /* partial_inplace */ | |
2cab6cc3 MS |
847 | 0xffffffff, /* src_mask */ |
848 | 0xffffffff, /* dst_mask */ | |
c19d1205 ZW |
849 | TRUE), /* pcrel_offset */ |
850 | ||
851 | HOWTO (R_ARM_THM_PC12, /* type */ | |
852 | 0, /* rightshift */ | |
853 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
854 | 13, /* bitsize */ | |
855 | TRUE, /* pc_relative */ | |
856 | 0, /* bitpos */ | |
2cab6cc3 | 857 | complain_overflow_dont,/* complain_on_overflow */ |
c19d1205 ZW |
858 | bfd_elf_generic_reloc, /* special_function */ |
859 | "R_ARM_THM_PC12", /* name */ | |
860 | FALSE, /* partial_inplace */ | |
2cab6cc3 MS |
861 | 0xffffffff, /* src_mask */ |
862 | 0xffffffff, /* dst_mask */ | |
c19d1205 ZW |
863 | TRUE), /* pcrel_offset */ |
864 | ||
865 | HOWTO (R_ARM_ABS32_NOI, /* type */ | |
866 | 0, /* rightshift */ | |
867 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
868 | 32, /* bitsize */ | |
869 | FALSE, /* pc_relative */ | |
870 | 0, /* bitpos */ | |
871 | complain_overflow_dont,/* complain_on_overflow */ | |
872 | bfd_elf_generic_reloc, /* special_function */ | |
873 | "R_ARM_ABS32_NOI", /* name */ | |
874 | FALSE, /* partial_inplace */ | |
875 | 0xffffffff, /* src_mask */ | |
876 | 0xffffffff, /* dst_mask */ | |
877 | FALSE), /* pcrel_offset */ | |
878 | ||
879 | HOWTO (R_ARM_REL32_NOI, /* type */ | |
880 | 0, /* rightshift */ | |
881 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
882 | 32, /* bitsize */ | |
883 | TRUE, /* pc_relative */ | |
884 | 0, /* bitpos */ | |
885 | complain_overflow_dont,/* complain_on_overflow */ | |
886 | bfd_elf_generic_reloc, /* special_function */ | |
887 | "R_ARM_REL32_NOI", /* name */ | |
888 | FALSE, /* partial_inplace */ | |
889 | 0xffffffff, /* src_mask */ | |
890 | 0xffffffff, /* dst_mask */ | |
891 | FALSE), /* pcrel_offset */ | |
7f266840 | 892 | |
4962c51a MS |
893 | /* Group relocations. */ |
894 | ||
895 | HOWTO (R_ARM_ALU_PC_G0_NC, /* type */ | |
896 | 0, /* rightshift */ | |
897 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
898 | 32, /* bitsize */ | |
899 | TRUE, /* pc_relative */ | |
900 | 0, /* bitpos */ | |
901 | complain_overflow_dont,/* complain_on_overflow */ | |
902 | bfd_elf_generic_reloc, /* special_function */ | |
903 | "R_ARM_ALU_PC_G0_NC", /* name */ | |
904 | FALSE, /* partial_inplace */ | |
905 | 0xffffffff, /* src_mask */ | |
906 | 0xffffffff, /* dst_mask */ | |
907 | TRUE), /* pcrel_offset */ | |
908 | ||
909 | HOWTO (R_ARM_ALU_PC_G0, /* type */ | |
910 | 0, /* rightshift */ | |
911 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
912 | 32, /* bitsize */ | |
913 | TRUE, /* pc_relative */ | |
914 | 0, /* bitpos */ | |
915 | complain_overflow_dont,/* complain_on_overflow */ | |
916 | bfd_elf_generic_reloc, /* special_function */ | |
917 | "R_ARM_ALU_PC_G0", /* name */ | |
918 | FALSE, /* partial_inplace */ | |
919 | 0xffffffff, /* src_mask */ | |
920 | 0xffffffff, /* dst_mask */ | |
921 | TRUE), /* pcrel_offset */ | |
922 | ||
923 | HOWTO (R_ARM_ALU_PC_G1_NC, /* type */ | |
924 | 0, /* rightshift */ | |
925 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
926 | 32, /* bitsize */ | |
927 | TRUE, /* pc_relative */ | |
928 | 0, /* bitpos */ | |
929 | complain_overflow_dont,/* complain_on_overflow */ | |
930 | bfd_elf_generic_reloc, /* special_function */ | |
931 | "R_ARM_ALU_PC_G1_NC", /* name */ | |
932 | FALSE, /* partial_inplace */ | |
933 | 0xffffffff, /* src_mask */ | |
934 | 0xffffffff, /* dst_mask */ | |
935 | TRUE), /* pcrel_offset */ | |
936 | ||
937 | HOWTO (R_ARM_ALU_PC_G1, /* type */ | |
938 | 0, /* rightshift */ | |
939 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
940 | 32, /* bitsize */ | |
941 | TRUE, /* pc_relative */ | |
942 | 0, /* bitpos */ | |
943 | complain_overflow_dont,/* complain_on_overflow */ | |
944 | bfd_elf_generic_reloc, /* special_function */ | |
945 | "R_ARM_ALU_PC_G1", /* name */ | |
946 | FALSE, /* partial_inplace */ | |
947 | 0xffffffff, /* src_mask */ | |
948 | 0xffffffff, /* dst_mask */ | |
949 | TRUE), /* pcrel_offset */ | |
950 | ||
951 | HOWTO (R_ARM_ALU_PC_G2, /* type */ | |
952 | 0, /* rightshift */ | |
953 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
954 | 32, /* bitsize */ | |
955 | TRUE, /* pc_relative */ | |
956 | 0, /* bitpos */ | |
957 | complain_overflow_dont,/* complain_on_overflow */ | |
958 | bfd_elf_generic_reloc, /* special_function */ | |
959 | "R_ARM_ALU_PC_G2", /* name */ | |
960 | FALSE, /* partial_inplace */ | |
961 | 0xffffffff, /* src_mask */ | |
962 | 0xffffffff, /* dst_mask */ | |
963 | TRUE), /* pcrel_offset */ | |
964 | ||
965 | HOWTO (R_ARM_LDR_PC_G1, /* type */ | |
966 | 0, /* rightshift */ | |
967 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
968 | 32, /* bitsize */ | |
969 | TRUE, /* pc_relative */ | |
970 | 0, /* bitpos */ | |
971 | complain_overflow_dont,/* complain_on_overflow */ | |
972 | bfd_elf_generic_reloc, /* special_function */ | |
973 | "R_ARM_LDR_PC_G1", /* name */ | |
974 | FALSE, /* partial_inplace */ | |
975 | 0xffffffff, /* src_mask */ | |
976 | 0xffffffff, /* dst_mask */ | |
977 | TRUE), /* pcrel_offset */ | |
978 | ||
979 | HOWTO (R_ARM_LDR_PC_G2, /* type */ | |
980 | 0, /* rightshift */ | |
981 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
982 | 32, /* bitsize */ | |
983 | TRUE, /* pc_relative */ | |
984 | 0, /* bitpos */ | |
985 | complain_overflow_dont,/* complain_on_overflow */ | |
986 | bfd_elf_generic_reloc, /* special_function */ | |
987 | "R_ARM_LDR_PC_G2", /* name */ | |
988 | FALSE, /* partial_inplace */ | |
989 | 0xffffffff, /* src_mask */ | |
990 | 0xffffffff, /* dst_mask */ | |
991 | TRUE), /* pcrel_offset */ | |
992 | ||
993 | HOWTO (R_ARM_LDRS_PC_G0, /* type */ | |
994 | 0, /* rightshift */ | |
995 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
996 | 32, /* bitsize */ | |
997 | TRUE, /* pc_relative */ | |
998 | 0, /* bitpos */ | |
999 | complain_overflow_dont,/* complain_on_overflow */ | |
1000 | bfd_elf_generic_reloc, /* special_function */ | |
1001 | "R_ARM_LDRS_PC_G0", /* name */ | |
1002 | FALSE, /* partial_inplace */ | |
1003 | 0xffffffff, /* src_mask */ | |
1004 | 0xffffffff, /* dst_mask */ | |
1005 | TRUE), /* pcrel_offset */ | |
1006 | ||
1007 | HOWTO (R_ARM_LDRS_PC_G1, /* type */ | |
1008 | 0, /* rightshift */ | |
1009 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1010 | 32, /* bitsize */ | |
1011 | TRUE, /* pc_relative */ | |
1012 | 0, /* bitpos */ | |
1013 | complain_overflow_dont,/* complain_on_overflow */ | |
1014 | bfd_elf_generic_reloc, /* special_function */ | |
1015 | "R_ARM_LDRS_PC_G1", /* name */ | |
1016 | FALSE, /* partial_inplace */ | |
1017 | 0xffffffff, /* src_mask */ | |
1018 | 0xffffffff, /* dst_mask */ | |
1019 | TRUE), /* pcrel_offset */ | |
1020 | ||
1021 | HOWTO (R_ARM_LDRS_PC_G2, /* type */ | |
1022 | 0, /* rightshift */ | |
1023 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1024 | 32, /* bitsize */ | |
1025 | TRUE, /* pc_relative */ | |
1026 | 0, /* bitpos */ | |
1027 | complain_overflow_dont,/* complain_on_overflow */ | |
1028 | bfd_elf_generic_reloc, /* special_function */ | |
1029 | "R_ARM_LDRS_PC_G2", /* name */ | |
1030 | FALSE, /* partial_inplace */ | |
1031 | 0xffffffff, /* src_mask */ | |
1032 | 0xffffffff, /* dst_mask */ | |
1033 | TRUE), /* pcrel_offset */ | |
1034 | ||
1035 | HOWTO (R_ARM_LDC_PC_G0, /* type */ | |
1036 | 0, /* rightshift */ | |
1037 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1038 | 32, /* bitsize */ | |
1039 | TRUE, /* pc_relative */ | |
1040 | 0, /* bitpos */ | |
1041 | complain_overflow_dont,/* complain_on_overflow */ | |
1042 | bfd_elf_generic_reloc, /* special_function */ | |
1043 | "R_ARM_LDC_PC_G0", /* name */ | |
1044 | FALSE, /* partial_inplace */ | |
1045 | 0xffffffff, /* src_mask */ | |
1046 | 0xffffffff, /* dst_mask */ | |
1047 | TRUE), /* pcrel_offset */ | |
1048 | ||
1049 | HOWTO (R_ARM_LDC_PC_G1, /* type */ | |
1050 | 0, /* rightshift */ | |
1051 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1052 | 32, /* bitsize */ | |
1053 | TRUE, /* pc_relative */ | |
1054 | 0, /* bitpos */ | |
1055 | complain_overflow_dont,/* complain_on_overflow */ | |
1056 | bfd_elf_generic_reloc, /* special_function */ | |
1057 | "R_ARM_LDC_PC_G1", /* name */ | |
1058 | FALSE, /* partial_inplace */ | |
1059 | 0xffffffff, /* src_mask */ | |
1060 | 0xffffffff, /* dst_mask */ | |
1061 | TRUE), /* pcrel_offset */ | |
1062 | ||
1063 | HOWTO (R_ARM_LDC_PC_G2, /* type */ | |
1064 | 0, /* rightshift */ | |
1065 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1066 | 32, /* bitsize */ | |
1067 | TRUE, /* pc_relative */ | |
1068 | 0, /* bitpos */ | |
1069 | complain_overflow_dont,/* complain_on_overflow */ | |
1070 | bfd_elf_generic_reloc, /* special_function */ | |
1071 | "R_ARM_LDC_PC_G2", /* name */ | |
1072 | FALSE, /* partial_inplace */ | |
1073 | 0xffffffff, /* src_mask */ | |
1074 | 0xffffffff, /* dst_mask */ | |
1075 | TRUE), /* pcrel_offset */ | |
1076 | ||
1077 | HOWTO (R_ARM_ALU_SB_G0_NC, /* type */ | |
1078 | 0, /* rightshift */ | |
1079 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1080 | 32, /* bitsize */ | |
1081 | TRUE, /* pc_relative */ | |
1082 | 0, /* bitpos */ | |
1083 | complain_overflow_dont,/* complain_on_overflow */ | |
1084 | bfd_elf_generic_reloc, /* special_function */ | |
1085 | "R_ARM_ALU_SB_G0_NC", /* name */ | |
1086 | FALSE, /* partial_inplace */ | |
1087 | 0xffffffff, /* src_mask */ | |
1088 | 0xffffffff, /* dst_mask */ | |
1089 | TRUE), /* pcrel_offset */ | |
1090 | ||
1091 | HOWTO (R_ARM_ALU_SB_G0, /* type */ | |
1092 | 0, /* rightshift */ | |
1093 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1094 | 32, /* bitsize */ | |
1095 | TRUE, /* pc_relative */ | |
1096 | 0, /* bitpos */ | |
1097 | complain_overflow_dont,/* complain_on_overflow */ | |
1098 | bfd_elf_generic_reloc, /* special_function */ | |
1099 | "R_ARM_ALU_SB_G0", /* name */ | |
1100 | FALSE, /* partial_inplace */ | |
1101 | 0xffffffff, /* src_mask */ | |
1102 | 0xffffffff, /* dst_mask */ | |
1103 | TRUE), /* pcrel_offset */ | |
1104 | ||
1105 | HOWTO (R_ARM_ALU_SB_G1_NC, /* type */ | |
1106 | 0, /* rightshift */ | |
1107 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1108 | 32, /* bitsize */ | |
1109 | TRUE, /* pc_relative */ | |
1110 | 0, /* bitpos */ | |
1111 | complain_overflow_dont,/* complain_on_overflow */ | |
1112 | bfd_elf_generic_reloc, /* special_function */ | |
1113 | "R_ARM_ALU_SB_G1_NC", /* name */ | |
1114 | FALSE, /* partial_inplace */ | |
1115 | 0xffffffff, /* src_mask */ | |
1116 | 0xffffffff, /* dst_mask */ | |
1117 | TRUE), /* pcrel_offset */ | |
1118 | ||
1119 | HOWTO (R_ARM_ALU_SB_G1, /* type */ | |
1120 | 0, /* rightshift */ | |
1121 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1122 | 32, /* bitsize */ | |
1123 | TRUE, /* pc_relative */ | |
1124 | 0, /* bitpos */ | |
1125 | complain_overflow_dont,/* complain_on_overflow */ | |
1126 | bfd_elf_generic_reloc, /* special_function */ | |
1127 | "R_ARM_ALU_SB_G1", /* name */ | |
1128 | FALSE, /* partial_inplace */ | |
1129 | 0xffffffff, /* src_mask */ | |
1130 | 0xffffffff, /* dst_mask */ | |
1131 | TRUE), /* pcrel_offset */ | |
1132 | ||
1133 | HOWTO (R_ARM_ALU_SB_G2, /* type */ | |
1134 | 0, /* rightshift */ | |
1135 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1136 | 32, /* bitsize */ | |
1137 | TRUE, /* pc_relative */ | |
1138 | 0, /* bitpos */ | |
1139 | complain_overflow_dont,/* complain_on_overflow */ | |
1140 | bfd_elf_generic_reloc, /* special_function */ | |
1141 | "R_ARM_ALU_SB_G2", /* name */ | |
1142 | FALSE, /* partial_inplace */ | |
1143 | 0xffffffff, /* src_mask */ | |
1144 | 0xffffffff, /* dst_mask */ | |
1145 | TRUE), /* pcrel_offset */ | |
1146 | ||
1147 | HOWTO (R_ARM_LDR_SB_G0, /* type */ | |
1148 | 0, /* rightshift */ | |
1149 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1150 | 32, /* bitsize */ | |
1151 | TRUE, /* pc_relative */ | |
1152 | 0, /* bitpos */ | |
1153 | complain_overflow_dont,/* complain_on_overflow */ | |
1154 | bfd_elf_generic_reloc, /* special_function */ | |
1155 | "R_ARM_LDR_SB_G0", /* name */ | |
1156 | FALSE, /* partial_inplace */ | |
1157 | 0xffffffff, /* src_mask */ | |
1158 | 0xffffffff, /* dst_mask */ | |
1159 | TRUE), /* pcrel_offset */ | |
1160 | ||
1161 | HOWTO (R_ARM_LDR_SB_G1, /* type */ | |
1162 | 0, /* rightshift */ | |
1163 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1164 | 32, /* bitsize */ | |
1165 | TRUE, /* pc_relative */ | |
1166 | 0, /* bitpos */ | |
1167 | complain_overflow_dont,/* complain_on_overflow */ | |
1168 | bfd_elf_generic_reloc, /* special_function */ | |
1169 | "R_ARM_LDR_SB_G1", /* name */ | |
1170 | FALSE, /* partial_inplace */ | |
1171 | 0xffffffff, /* src_mask */ | |
1172 | 0xffffffff, /* dst_mask */ | |
1173 | TRUE), /* pcrel_offset */ | |
1174 | ||
1175 | HOWTO (R_ARM_LDR_SB_G2, /* type */ | |
1176 | 0, /* rightshift */ | |
1177 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1178 | 32, /* bitsize */ | |
1179 | TRUE, /* pc_relative */ | |
1180 | 0, /* bitpos */ | |
1181 | complain_overflow_dont,/* complain_on_overflow */ | |
1182 | bfd_elf_generic_reloc, /* special_function */ | |
1183 | "R_ARM_LDR_SB_G2", /* name */ | |
1184 | FALSE, /* partial_inplace */ | |
1185 | 0xffffffff, /* src_mask */ | |
1186 | 0xffffffff, /* dst_mask */ | |
1187 | TRUE), /* pcrel_offset */ | |
1188 | ||
1189 | HOWTO (R_ARM_LDRS_SB_G0, /* type */ | |
1190 | 0, /* rightshift */ | |
1191 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1192 | 32, /* bitsize */ | |
1193 | TRUE, /* pc_relative */ | |
1194 | 0, /* bitpos */ | |
1195 | complain_overflow_dont,/* complain_on_overflow */ | |
1196 | bfd_elf_generic_reloc, /* special_function */ | |
1197 | "R_ARM_LDRS_SB_G0", /* name */ | |
1198 | FALSE, /* partial_inplace */ | |
1199 | 0xffffffff, /* src_mask */ | |
1200 | 0xffffffff, /* dst_mask */ | |
1201 | TRUE), /* pcrel_offset */ | |
1202 | ||
1203 | HOWTO (R_ARM_LDRS_SB_G1, /* type */ | |
1204 | 0, /* rightshift */ | |
1205 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1206 | 32, /* bitsize */ | |
1207 | TRUE, /* pc_relative */ | |
1208 | 0, /* bitpos */ | |
1209 | complain_overflow_dont,/* complain_on_overflow */ | |
1210 | bfd_elf_generic_reloc, /* special_function */ | |
1211 | "R_ARM_LDRS_SB_G1", /* name */ | |
1212 | FALSE, /* partial_inplace */ | |
1213 | 0xffffffff, /* src_mask */ | |
1214 | 0xffffffff, /* dst_mask */ | |
1215 | TRUE), /* pcrel_offset */ | |
1216 | ||
1217 | HOWTO (R_ARM_LDRS_SB_G2, /* type */ | |
1218 | 0, /* rightshift */ | |
1219 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1220 | 32, /* bitsize */ | |
1221 | TRUE, /* pc_relative */ | |
1222 | 0, /* bitpos */ | |
1223 | complain_overflow_dont,/* complain_on_overflow */ | |
1224 | bfd_elf_generic_reloc, /* special_function */ | |
1225 | "R_ARM_LDRS_SB_G2", /* name */ | |
1226 | FALSE, /* partial_inplace */ | |
1227 | 0xffffffff, /* src_mask */ | |
1228 | 0xffffffff, /* dst_mask */ | |
1229 | TRUE), /* pcrel_offset */ | |
1230 | ||
1231 | HOWTO (R_ARM_LDC_SB_G0, /* type */ | |
1232 | 0, /* rightshift */ | |
1233 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1234 | 32, /* bitsize */ | |
1235 | TRUE, /* pc_relative */ | |
1236 | 0, /* bitpos */ | |
1237 | complain_overflow_dont,/* complain_on_overflow */ | |
1238 | bfd_elf_generic_reloc, /* special_function */ | |
1239 | "R_ARM_LDC_SB_G0", /* name */ | |
1240 | FALSE, /* partial_inplace */ | |
1241 | 0xffffffff, /* src_mask */ | |
1242 | 0xffffffff, /* dst_mask */ | |
1243 | TRUE), /* pcrel_offset */ | |
1244 | ||
1245 | HOWTO (R_ARM_LDC_SB_G1, /* type */ | |
1246 | 0, /* rightshift */ | |
1247 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1248 | 32, /* bitsize */ | |
1249 | TRUE, /* pc_relative */ | |
1250 | 0, /* bitpos */ | |
1251 | complain_overflow_dont,/* complain_on_overflow */ | |
1252 | bfd_elf_generic_reloc, /* special_function */ | |
1253 | "R_ARM_LDC_SB_G1", /* name */ | |
1254 | FALSE, /* partial_inplace */ | |
1255 | 0xffffffff, /* src_mask */ | |
1256 | 0xffffffff, /* dst_mask */ | |
1257 | TRUE), /* pcrel_offset */ | |
1258 | ||
1259 | HOWTO (R_ARM_LDC_SB_G2, /* type */ | |
1260 | 0, /* rightshift */ | |
1261 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1262 | 32, /* bitsize */ | |
1263 | TRUE, /* pc_relative */ | |
1264 | 0, /* bitpos */ | |
1265 | complain_overflow_dont,/* complain_on_overflow */ | |
1266 | bfd_elf_generic_reloc, /* special_function */ | |
1267 | "R_ARM_LDC_SB_G2", /* name */ | |
1268 | FALSE, /* partial_inplace */ | |
1269 | 0xffffffff, /* src_mask */ | |
1270 | 0xffffffff, /* dst_mask */ | |
1271 | TRUE), /* pcrel_offset */ | |
1272 | ||
1273 | /* End of group relocations. */ | |
c19d1205 | 1274 | |
c19d1205 ZW |
1275 | HOWTO (R_ARM_MOVW_BREL_NC, /* type */ |
1276 | 0, /* rightshift */ | |
1277 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1278 | 16, /* bitsize */ | |
1279 | FALSE, /* pc_relative */ | |
1280 | 0, /* bitpos */ | |
1281 | complain_overflow_dont,/* complain_on_overflow */ | |
1282 | bfd_elf_generic_reloc, /* special_function */ | |
1283 | "R_ARM_MOVW_BREL_NC", /* name */ | |
1284 | FALSE, /* partial_inplace */ | |
1285 | 0x0000ffff, /* src_mask */ | |
1286 | 0x0000ffff, /* dst_mask */ | |
1287 | FALSE), /* pcrel_offset */ | |
1288 | ||
1289 | HOWTO (R_ARM_MOVT_BREL, /* type */ | |
1290 | 0, /* rightshift */ | |
1291 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1292 | 16, /* bitsize */ | |
1293 | FALSE, /* pc_relative */ | |
1294 | 0, /* bitpos */ | |
1295 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1296 | bfd_elf_generic_reloc, /* special_function */ | |
1297 | "R_ARM_MOVT_BREL", /* name */ | |
1298 | FALSE, /* partial_inplace */ | |
1299 | 0x0000ffff, /* src_mask */ | |
1300 | 0x0000ffff, /* dst_mask */ | |
1301 | FALSE), /* pcrel_offset */ | |
1302 | ||
1303 | HOWTO (R_ARM_MOVW_BREL, /* type */ | |
1304 | 0, /* rightshift */ | |
1305 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1306 | 16, /* bitsize */ | |
1307 | FALSE, /* pc_relative */ | |
1308 | 0, /* bitpos */ | |
1309 | complain_overflow_dont,/* complain_on_overflow */ | |
1310 | bfd_elf_generic_reloc, /* special_function */ | |
1311 | "R_ARM_MOVW_BREL", /* name */ | |
1312 | FALSE, /* partial_inplace */ | |
1313 | 0x0000ffff, /* src_mask */ | |
1314 | 0x0000ffff, /* dst_mask */ | |
1315 | FALSE), /* pcrel_offset */ | |
1316 | ||
1317 | HOWTO (R_ARM_THM_MOVW_BREL_NC,/* type */ | |
1318 | 0, /* rightshift */ | |
1319 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1320 | 16, /* bitsize */ | |
1321 | FALSE, /* pc_relative */ | |
1322 | 0, /* bitpos */ | |
1323 | complain_overflow_dont,/* complain_on_overflow */ | |
1324 | bfd_elf_generic_reloc, /* special_function */ | |
1325 | "R_ARM_THM_MOVW_BREL_NC",/* name */ | |
1326 | FALSE, /* partial_inplace */ | |
1327 | 0x040f70ff, /* src_mask */ | |
1328 | 0x040f70ff, /* dst_mask */ | |
1329 | FALSE), /* pcrel_offset */ | |
1330 | ||
1331 | HOWTO (R_ARM_THM_MOVT_BREL, /* type */ | |
1332 | 0, /* rightshift */ | |
1333 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1334 | 16, /* bitsize */ | |
1335 | FALSE, /* pc_relative */ | |
1336 | 0, /* bitpos */ | |
1337 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1338 | bfd_elf_generic_reloc, /* special_function */ | |
1339 | "R_ARM_THM_MOVT_BREL", /* name */ | |
1340 | FALSE, /* partial_inplace */ | |
1341 | 0x040f70ff, /* src_mask */ | |
1342 | 0x040f70ff, /* dst_mask */ | |
1343 | FALSE), /* pcrel_offset */ | |
1344 | ||
1345 | HOWTO (R_ARM_THM_MOVW_BREL, /* type */ | |
1346 | 0, /* rightshift */ | |
1347 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1348 | 16, /* bitsize */ | |
1349 | FALSE, /* pc_relative */ | |
1350 | 0, /* bitpos */ | |
1351 | complain_overflow_dont,/* complain_on_overflow */ | |
1352 | bfd_elf_generic_reloc, /* special_function */ | |
1353 | "R_ARM_THM_MOVW_BREL", /* name */ | |
1354 | FALSE, /* partial_inplace */ | |
1355 | 0x040f70ff, /* src_mask */ | |
1356 | 0x040f70ff, /* dst_mask */ | |
1357 | FALSE), /* pcrel_offset */ | |
1358 | ||
0855e32b NS |
1359 | HOWTO (R_ARM_TLS_GOTDESC, /* type */ |
1360 | 0, /* rightshift */ | |
1361 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1362 | 32, /* bitsize */ | |
1363 | FALSE, /* pc_relative */ | |
1364 | 0, /* bitpos */ | |
1365 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1366 | NULL, /* special_function */ | |
1367 | "R_ARM_TLS_GOTDESC", /* name */ | |
1368 | TRUE, /* partial_inplace */ | |
1369 | 0xffffffff, /* src_mask */ | |
1370 | 0xffffffff, /* dst_mask */ | |
1371 | FALSE), /* pcrel_offset */ | |
1372 | ||
1373 | HOWTO (R_ARM_TLS_CALL, /* type */ | |
1374 | 0, /* rightshift */ | |
1375 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1376 | 24, /* bitsize */ | |
1377 | FALSE, /* pc_relative */ | |
1378 | 0, /* bitpos */ | |
1379 | complain_overflow_dont,/* complain_on_overflow */ | |
1380 | bfd_elf_generic_reloc, /* special_function */ | |
1381 | "R_ARM_TLS_CALL", /* name */ | |
1382 | FALSE, /* partial_inplace */ | |
1383 | 0x00ffffff, /* src_mask */ | |
1384 | 0x00ffffff, /* dst_mask */ | |
1385 | FALSE), /* pcrel_offset */ | |
1386 | ||
1387 | HOWTO (R_ARM_TLS_DESCSEQ, /* type */ | |
1388 | 0, /* rightshift */ | |
1389 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1390 | 0, /* bitsize */ | |
1391 | FALSE, /* pc_relative */ | |
1392 | 0, /* bitpos */ | |
1393 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1394 | bfd_elf_generic_reloc, /* special_function */ | |
1395 | "R_ARM_TLS_DESCSEQ", /* name */ | |
1396 | FALSE, /* partial_inplace */ | |
1397 | 0x00000000, /* src_mask */ | |
1398 | 0x00000000, /* dst_mask */ | |
1399 | FALSE), /* pcrel_offset */ | |
1400 | ||
1401 | HOWTO (R_ARM_THM_TLS_CALL, /* type */ | |
1402 | 0, /* rightshift */ | |
1403 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1404 | 24, /* bitsize */ | |
1405 | FALSE, /* pc_relative */ | |
1406 | 0, /* bitpos */ | |
1407 | complain_overflow_dont,/* complain_on_overflow */ | |
1408 | bfd_elf_generic_reloc, /* special_function */ | |
1409 | "R_ARM_THM_TLS_CALL", /* name */ | |
1410 | FALSE, /* partial_inplace */ | |
1411 | 0x07ff07ff, /* src_mask */ | |
1412 | 0x07ff07ff, /* dst_mask */ | |
1413 | FALSE), /* pcrel_offset */ | |
c19d1205 ZW |
1414 | |
1415 | HOWTO (R_ARM_PLT32_ABS, /* type */ | |
1416 | 0, /* rightshift */ | |
1417 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1418 | 32, /* bitsize */ | |
1419 | FALSE, /* pc_relative */ | |
1420 | 0, /* bitpos */ | |
1421 | complain_overflow_dont,/* complain_on_overflow */ | |
1422 | bfd_elf_generic_reloc, /* special_function */ | |
1423 | "R_ARM_PLT32_ABS", /* name */ | |
1424 | FALSE, /* partial_inplace */ | |
1425 | 0xffffffff, /* src_mask */ | |
1426 | 0xffffffff, /* dst_mask */ | |
1427 | FALSE), /* pcrel_offset */ | |
1428 | ||
1429 | HOWTO (R_ARM_GOT_ABS, /* type */ | |
1430 | 0, /* rightshift */ | |
1431 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1432 | 32, /* bitsize */ | |
1433 | FALSE, /* pc_relative */ | |
1434 | 0, /* bitpos */ | |
1435 | complain_overflow_dont,/* complain_on_overflow */ | |
1436 | bfd_elf_generic_reloc, /* special_function */ | |
1437 | "R_ARM_GOT_ABS", /* name */ | |
1438 | FALSE, /* partial_inplace */ | |
1439 | 0xffffffff, /* src_mask */ | |
1440 | 0xffffffff, /* dst_mask */ | |
1441 | FALSE), /* pcrel_offset */ | |
1442 | ||
1443 | HOWTO (R_ARM_GOT_PREL, /* type */ | |
1444 | 0, /* rightshift */ | |
1445 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1446 | 32, /* bitsize */ | |
1447 | TRUE, /* pc_relative */ | |
1448 | 0, /* bitpos */ | |
1449 | complain_overflow_dont, /* complain_on_overflow */ | |
1450 | bfd_elf_generic_reloc, /* special_function */ | |
1451 | "R_ARM_GOT_PREL", /* name */ | |
1452 | FALSE, /* partial_inplace */ | |
1453 | 0xffffffff, /* src_mask */ | |
1454 | 0xffffffff, /* dst_mask */ | |
1455 | TRUE), /* pcrel_offset */ | |
1456 | ||
1457 | HOWTO (R_ARM_GOT_BREL12, /* type */ | |
1458 | 0, /* rightshift */ | |
1459 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1460 | 12, /* bitsize */ | |
1461 | FALSE, /* pc_relative */ | |
1462 | 0, /* bitpos */ | |
1463 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1464 | bfd_elf_generic_reloc, /* special_function */ | |
1465 | "R_ARM_GOT_BREL12", /* name */ | |
1466 | FALSE, /* partial_inplace */ | |
1467 | 0x00000fff, /* src_mask */ | |
1468 | 0x00000fff, /* dst_mask */ | |
1469 | FALSE), /* pcrel_offset */ | |
1470 | ||
1471 | HOWTO (R_ARM_GOTOFF12, /* type */ | |
1472 | 0, /* rightshift */ | |
1473 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1474 | 12, /* bitsize */ | |
1475 | FALSE, /* pc_relative */ | |
1476 | 0, /* bitpos */ | |
1477 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1478 | bfd_elf_generic_reloc, /* special_function */ | |
1479 | "R_ARM_GOTOFF12", /* name */ | |
1480 | FALSE, /* partial_inplace */ | |
1481 | 0x00000fff, /* src_mask */ | |
1482 | 0x00000fff, /* dst_mask */ | |
1483 | FALSE), /* pcrel_offset */ | |
1484 | ||
1485 | EMPTY_HOWTO (R_ARM_GOTRELAX), /* reserved for future GOT-load optimizations */ | |
1486 | ||
1487 | /* GNU extension to record C++ vtable member usage */ | |
1488 | HOWTO (R_ARM_GNU_VTENTRY, /* type */ | |
99059e56 RM |
1489 | 0, /* rightshift */ |
1490 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1491 | 0, /* bitsize */ | |
1492 | FALSE, /* pc_relative */ | |
1493 | 0, /* bitpos */ | |
1494 | complain_overflow_dont, /* complain_on_overflow */ | |
1495 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
1496 | "R_ARM_GNU_VTENTRY", /* name */ | |
1497 | FALSE, /* partial_inplace */ | |
1498 | 0, /* src_mask */ | |
1499 | 0, /* dst_mask */ | |
1500 | FALSE), /* pcrel_offset */ | |
c19d1205 ZW |
1501 | |
1502 | /* GNU extension to record C++ vtable hierarchy */ | |
1503 | HOWTO (R_ARM_GNU_VTINHERIT, /* type */ | |
99059e56 RM |
1504 | 0, /* rightshift */ |
1505 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1506 | 0, /* bitsize */ | |
1507 | FALSE, /* pc_relative */ | |
1508 | 0, /* bitpos */ | |
1509 | complain_overflow_dont, /* complain_on_overflow */ | |
1510 | NULL, /* special_function */ | |
1511 | "R_ARM_GNU_VTINHERIT", /* name */ | |
1512 | FALSE, /* partial_inplace */ | |
1513 | 0, /* src_mask */ | |
1514 | 0, /* dst_mask */ | |
1515 | FALSE), /* pcrel_offset */ | |
c19d1205 ZW |
1516 | |
1517 | HOWTO (R_ARM_THM_JUMP11, /* type */ | |
1518 | 1, /* rightshift */ | |
1519 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1520 | 11, /* bitsize */ | |
1521 | TRUE, /* pc_relative */ | |
1522 | 0, /* bitpos */ | |
1523 | complain_overflow_signed, /* complain_on_overflow */ | |
1524 | bfd_elf_generic_reloc, /* special_function */ | |
1525 | "R_ARM_THM_JUMP11", /* name */ | |
1526 | FALSE, /* partial_inplace */ | |
1527 | 0x000007ff, /* src_mask */ | |
1528 | 0x000007ff, /* dst_mask */ | |
1529 | TRUE), /* pcrel_offset */ | |
1530 | ||
1531 | HOWTO (R_ARM_THM_JUMP8, /* type */ | |
1532 | 1, /* rightshift */ | |
1533 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1534 | 8, /* bitsize */ | |
1535 | TRUE, /* pc_relative */ | |
1536 | 0, /* bitpos */ | |
1537 | complain_overflow_signed, /* complain_on_overflow */ | |
1538 | bfd_elf_generic_reloc, /* special_function */ | |
1539 | "R_ARM_THM_JUMP8", /* name */ | |
1540 | FALSE, /* partial_inplace */ | |
1541 | 0x000000ff, /* src_mask */ | |
1542 | 0x000000ff, /* dst_mask */ | |
1543 | TRUE), /* pcrel_offset */ | |
ba93b8ac | 1544 | |
c19d1205 ZW |
1545 | /* TLS relocations */ |
1546 | HOWTO (R_ARM_TLS_GD32, /* type */ | |
99059e56 RM |
1547 | 0, /* rightshift */ |
1548 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1549 | 32, /* bitsize */ | |
1550 | FALSE, /* pc_relative */ | |
1551 | 0, /* bitpos */ | |
1552 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1553 | NULL, /* special_function */ | |
1554 | "R_ARM_TLS_GD32", /* name */ | |
1555 | TRUE, /* partial_inplace */ | |
1556 | 0xffffffff, /* src_mask */ | |
1557 | 0xffffffff, /* dst_mask */ | |
1558 | FALSE), /* pcrel_offset */ | |
ba93b8ac | 1559 | |
ba93b8ac | 1560 | HOWTO (R_ARM_TLS_LDM32, /* type */ |
99059e56 RM |
1561 | 0, /* rightshift */ |
1562 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1563 | 32, /* bitsize */ | |
1564 | FALSE, /* pc_relative */ | |
1565 | 0, /* bitpos */ | |
1566 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1567 | bfd_elf_generic_reloc, /* special_function */ | |
1568 | "R_ARM_TLS_LDM32", /* name */ | |
1569 | TRUE, /* partial_inplace */ | |
1570 | 0xffffffff, /* src_mask */ | |
1571 | 0xffffffff, /* dst_mask */ | |
1572 | FALSE), /* pcrel_offset */ | |
ba93b8ac | 1573 | |
c19d1205 | 1574 | HOWTO (R_ARM_TLS_LDO32, /* type */ |
99059e56 RM |
1575 | 0, /* rightshift */ |
1576 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1577 | 32, /* bitsize */ | |
1578 | FALSE, /* pc_relative */ | |
1579 | 0, /* bitpos */ | |
1580 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1581 | bfd_elf_generic_reloc, /* special_function */ | |
1582 | "R_ARM_TLS_LDO32", /* name */ | |
1583 | TRUE, /* partial_inplace */ | |
1584 | 0xffffffff, /* src_mask */ | |
1585 | 0xffffffff, /* dst_mask */ | |
1586 | FALSE), /* pcrel_offset */ | |
ba93b8ac | 1587 | |
ba93b8ac | 1588 | HOWTO (R_ARM_TLS_IE32, /* type */ |
99059e56 RM |
1589 | 0, /* rightshift */ |
1590 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1591 | 32, /* bitsize */ | |
1592 | FALSE, /* pc_relative */ | |
1593 | 0, /* bitpos */ | |
1594 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1595 | NULL, /* special_function */ | |
1596 | "R_ARM_TLS_IE32", /* name */ | |
1597 | TRUE, /* partial_inplace */ | |
1598 | 0xffffffff, /* src_mask */ | |
1599 | 0xffffffff, /* dst_mask */ | |
1600 | FALSE), /* pcrel_offset */ | |
7f266840 | 1601 | |
c19d1205 | 1602 | HOWTO (R_ARM_TLS_LE32, /* type */ |
99059e56 RM |
1603 | 0, /* rightshift */ |
1604 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1605 | 32, /* bitsize */ | |
1606 | FALSE, /* pc_relative */ | |
1607 | 0, /* bitpos */ | |
1608 | complain_overflow_bitfield,/* complain_on_overflow */ | |
75c11999 | 1609 | NULL, /* special_function */ |
99059e56 RM |
1610 | "R_ARM_TLS_LE32", /* name */ |
1611 | TRUE, /* partial_inplace */ | |
1612 | 0xffffffff, /* src_mask */ | |
1613 | 0xffffffff, /* dst_mask */ | |
1614 | FALSE), /* pcrel_offset */ | |
7f266840 | 1615 | |
c19d1205 ZW |
1616 | HOWTO (R_ARM_TLS_LDO12, /* type */ |
1617 | 0, /* rightshift */ | |
1618 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1619 | 12, /* bitsize */ | |
1620 | FALSE, /* pc_relative */ | |
7f266840 | 1621 | 0, /* bitpos */ |
c19d1205 | 1622 | complain_overflow_bitfield,/* complain_on_overflow */ |
7f266840 | 1623 | bfd_elf_generic_reloc, /* special_function */ |
c19d1205 | 1624 | "R_ARM_TLS_LDO12", /* name */ |
7f266840 | 1625 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
1626 | 0x00000fff, /* src_mask */ |
1627 | 0x00000fff, /* dst_mask */ | |
1628 | FALSE), /* pcrel_offset */ | |
7f266840 | 1629 | |
c19d1205 ZW |
1630 | HOWTO (R_ARM_TLS_LE12, /* type */ |
1631 | 0, /* rightshift */ | |
1632 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1633 | 12, /* bitsize */ | |
1634 | FALSE, /* pc_relative */ | |
7f266840 | 1635 | 0, /* bitpos */ |
c19d1205 | 1636 | complain_overflow_bitfield,/* complain_on_overflow */ |
7f266840 | 1637 | bfd_elf_generic_reloc, /* special_function */ |
c19d1205 | 1638 | "R_ARM_TLS_LE12", /* name */ |
7f266840 | 1639 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
1640 | 0x00000fff, /* src_mask */ |
1641 | 0x00000fff, /* dst_mask */ | |
1642 | FALSE), /* pcrel_offset */ | |
7f266840 | 1643 | |
c19d1205 | 1644 | HOWTO (R_ARM_TLS_IE12GP, /* type */ |
7f266840 DJ |
1645 | 0, /* rightshift */ |
1646 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c19d1205 ZW |
1647 | 12, /* bitsize */ |
1648 | FALSE, /* pc_relative */ | |
7f266840 | 1649 | 0, /* bitpos */ |
c19d1205 | 1650 | complain_overflow_bitfield,/* complain_on_overflow */ |
7f266840 | 1651 | bfd_elf_generic_reloc, /* special_function */ |
c19d1205 | 1652 | "R_ARM_TLS_IE12GP", /* name */ |
7f266840 | 1653 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
1654 | 0x00000fff, /* src_mask */ |
1655 | 0x00000fff, /* dst_mask */ | |
1656 | FALSE), /* pcrel_offset */ | |
0855e32b | 1657 | |
34e77a92 | 1658 | /* 112-127 private relocations. */ |
0855e32b NS |
1659 | EMPTY_HOWTO (112), |
1660 | EMPTY_HOWTO (113), | |
1661 | EMPTY_HOWTO (114), | |
1662 | EMPTY_HOWTO (115), | |
1663 | EMPTY_HOWTO (116), | |
1664 | EMPTY_HOWTO (117), | |
1665 | EMPTY_HOWTO (118), | |
1666 | EMPTY_HOWTO (119), | |
1667 | EMPTY_HOWTO (120), | |
1668 | EMPTY_HOWTO (121), | |
1669 | EMPTY_HOWTO (122), | |
1670 | EMPTY_HOWTO (123), | |
1671 | EMPTY_HOWTO (124), | |
1672 | EMPTY_HOWTO (125), | |
1673 | EMPTY_HOWTO (126), | |
1674 | EMPTY_HOWTO (127), | |
34e77a92 RS |
1675 | |
1676 | /* R_ARM_ME_TOO, obsolete. */ | |
0855e32b NS |
1677 | EMPTY_HOWTO (128), |
1678 | ||
1679 | HOWTO (R_ARM_THM_TLS_DESCSEQ, /* type */ | |
1680 | 0, /* rightshift */ | |
1681 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1682 | 0, /* bitsize */ | |
1683 | FALSE, /* pc_relative */ | |
1684 | 0, /* bitpos */ | |
1685 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1686 | bfd_elf_generic_reloc, /* special_function */ | |
1687 | "R_ARM_THM_TLS_DESCSEQ",/* name */ | |
1688 | FALSE, /* partial_inplace */ | |
1689 | 0x00000000, /* src_mask */ | |
1690 | 0x00000000, /* dst_mask */ | |
1691 | FALSE), /* pcrel_offset */ | |
72d98d16 MG |
1692 | EMPTY_HOWTO (130), |
1693 | EMPTY_HOWTO (131), | |
1694 | HOWTO (R_ARM_THM_ALU_ABS_G0_NC,/* type. */ | |
1695 | 0, /* rightshift. */ | |
1696 | 1, /* size (0 = byte, 1 = short, 2 = long). */ | |
1697 | 16, /* bitsize. */ | |
1698 | FALSE, /* pc_relative. */ | |
1699 | 0, /* bitpos. */ | |
1700 | complain_overflow_bitfield,/* complain_on_overflow. */ | |
1701 | bfd_elf_generic_reloc, /* special_function. */ | |
1702 | "R_ARM_THM_ALU_ABS_G0_NC",/* name. */ | |
1703 | FALSE, /* partial_inplace. */ | |
1704 | 0x00000000, /* src_mask. */ | |
1705 | 0x00000000, /* dst_mask. */ | |
1706 | FALSE), /* pcrel_offset. */ | |
1707 | HOWTO (R_ARM_THM_ALU_ABS_G1_NC,/* type. */ | |
1708 | 0, /* rightshift. */ | |
1709 | 1, /* size (0 = byte, 1 = short, 2 = long). */ | |
1710 | 16, /* bitsize. */ | |
1711 | FALSE, /* pc_relative. */ | |
1712 | 0, /* bitpos. */ | |
1713 | complain_overflow_bitfield,/* complain_on_overflow. */ | |
1714 | bfd_elf_generic_reloc, /* special_function. */ | |
1715 | "R_ARM_THM_ALU_ABS_G1_NC",/* name. */ | |
1716 | FALSE, /* partial_inplace. */ | |
1717 | 0x00000000, /* src_mask. */ | |
1718 | 0x00000000, /* dst_mask. */ | |
1719 | FALSE), /* pcrel_offset. */ | |
1720 | HOWTO (R_ARM_THM_ALU_ABS_G2_NC,/* type. */ | |
1721 | 0, /* rightshift. */ | |
1722 | 1, /* size (0 = byte, 1 = short, 2 = long). */ | |
1723 | 16, /* bitsize. */ | |
1724 | FALSE, /* pc_relative. */ | |
1725 | 0, /* bitpos. */ | |
1726 | complain_overflow_bitfield,/* complain_on_overflow. */ | |
1727 | bfd_elf_generic_reloc, /* special_function. */ | |
1728 | "R_ARM_THM_ALU_ABS_G2_NC",/* name. */ | |
1729 | FALSE, /* partial_inplace. */ | |
1730 | 0x00000000, /* src_mask. */ | |
1731 | 0x00000000, /* dst_mask. */ | |
1732 | FALSE), /* pcrel_offset. */ | |
1733 | HOWTO (R_ARM_THM_ALU_ABS_G3_NC,/* type. */ | |
1734 | 0, /* rightshift. */ | |
1735 | 1, /* size (0 = byte, 1 = short, 2 = long). */ | |
1736 | 16, /* bitsize. */ | |
1737 | FALSE, /* pc_relative. */ | |
1738 | 0, /* bitpos. */ | |
1739 | complain_overflow_bitfield,/* complain_on_overflow. */ | |
1740 | bfd_elf_generic_reloc, /* special_function. */ | |
1741 | "R_ARM_THM_ALU_ABS_G3_NC",/* name. */ | |
1742 | FALSE, /* partial_inplace. */ | |
1743 | 0x00000000, /* src_mask. */ | |
1744 | 0x00000000, /* dst_mask. */ | |
1745 | FALSE), /* pcrel_offset. */ | |
c19d1205 ZW |
1746 | }; |
1747 | ||
34e77a92 RS |
1748 | /* 160 onwards: */ |
1749 | static reloc_howto_type elf32_arm_howto_table_2[1] = | |
1750 | { | |
1751 | HOWTO (R_ARM_IRELATIVE, /* type */ | |
99059e56 RM |
1752 | 0, /* rightshift */ |
1753 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1754 | 32, /* bitsize */ | |
1755 | FALSE, /* pc_relative */ | |
1756 | 0, /* bitpos */ | |
1757 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1758 | bfd_elf_generic_reloc, /* special_function */ | |
1759 | "R_ARM_IRELATIVE", /* name */ | |
1760 | TRUE, /* partial_inplace */ | |
1761 | 0xffffffff, /* src_mask */ | |
1762 | 0xffffffff, /* dst_mask */ | |
1763 | FALSE) /* pcrel_offset */ | |
34e77a92 | 1764 | }; |
c19d1205 | 1765 | |
34e77a92 RS |
1766 | /* 249-255 extended, currently unused, relocations: */ |
1767 | static reloc_howto_type elf32_arm_howto_table_3[4] = | |
7f266840 DJ |
1768 | { |
1769 | HOWTO (R_ARM_RREL32, /* type */ | |
1770 | 0, /* rightshift */ | |
1771 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1772 | 0, /* bitsize */ | |
1773 | FALSE, /* pc_relative */ | |
1774 | 0, /* bitpos */ | |
1775 | complain_overflow_dont,/* complain_on_overflow */ | |
1776 | bfd_elf_generic_reloc, /* special_function */ | |
1777 | "R_ARM_RREL32", /* name */ | |
1778 | FALSE, /* partial_inplace */ | |
1779 | 0, /* src_mask */ | |
1780 | 0, /* dst_mask */ | |
1781 | FALSE), /* pcrel_offset */ | |
1782 | ||
1783 | HOWTO (R_ARM_RABS32, /* type */ | |
1784 | 0, /* rightshift */ | |
1785 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1786 | 0, /* bitsize */ | |
1787 | FALSE, /* pc_relative */ | |
1788 | 0, /* bitpos */ | |
1789 | complain_overflow_dont,/* complain_on_overflow */ | |
1790 | bfd_elf_generic_reloc, /* special_function */ | |
1791 | "R_ARM_RABS32", /* name */ | |
1792 | FALSE, /* partial_inplace */ | |
1793 | 0, /* src_mask */ | |
1794 | 0, /* dst_mask */ | |
1795 | FALSE), /* pcrel_offset */ | |
1796 | ||
1797 | HOWTO (R_ARM_RPC24, /* type */ | |
1798 | 0, /* rightshift */ | |
1799 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1800 | 0, /* bitsize */ | |
1801 | FALSE, /* pc_relative */ | |
1802 | 0, /* bitpos */ | |
1803 | complain_overflow_dont,/* complain_on_overflow */ | |
1804 | bfd_elf_generic_reloc, /* special_function */ | |
1805 | "R_ARM_RPC24", /* name */ | |
1806 | FALSE, /* partial_inplace */ | |
1807 | 0, /* src_mask */ | |
1808 | 0, /* dst_mask */ | |
1809 | FALSE), /* pcrel_offset */ | |
1810 | ||
1811 | HOWTO (R_ARM_RBASE, /* type */ | |
1812 | 0, /* rightshift */ | |
1813 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1814 | 0, /* bitsize */ | |
1815 | FALSE, /* pc_relative */ | |
1816 | 0, /* bitpos */ | |
1817 | complain_overflow_dont,/* complain_on_overflow */ | |
1818 | bfd_elf_generic_reloc, /* special_function */ | |
1819 | "R_ARM_RBASE", /* name */ | |
1820 | FALSE, /* partial_inplace */ | |
1821 | 0, /* src_mask */ | |
1822 | 0, /* dst_mask */ | |
1823 | FALSE) /* pcrel_offset */ | |
1824 | }; | |
1825 | ||
1826 | static reloc_howto_type * | |
1827 | elf32_arm_howto_from_type (unsigned int r_type) | |
1828 | { | |
906e58ca | 1829 | if (r_type < ARRAY_SIZE (elf32_arm_howto_table_1)) |
c19d1205 | 1830 | return &elf32_arm_howto_table_1[r_type]; |
ba93b8ac | 1831 | |
34e77a92 RS |
1832 | if (r_type == R_ARM_IRELATIVE) |
1833 | return &elf32_arm_howto_table_2[r_type - R_ARM_IRELATIVE]; | |
1834 | ||
c19d1205 | 1835 | if (r_type >= R_ARM_RREL32 |
34e77a92 RS |
1836 | && r_type < R_ARM_RREL32 + ARRAY_SIZE (elf32_arm_howto_table_3)) |
1837 | return &elf32_arm_howto_table_3[r_type - R_ARM_RREL32]; | |
7f266840 | 1838 | |
c19d1205 | 1839 | return NULL; |
7f266840 DJ |
1840 | } |
1841 | ||
1842 | static void | |
1843 | elf32_arm_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED, arelent * bfd_reloc, | |
1844 | Elf_Internal_Rela * elf_reloc) | |
1845 | { | |
1846 | unsigned int r_type; | |
1847 | ||
1848 | r_type = ELF32_R_TYPE (elf_reloc->r_info); | |
1849 | bfd_reloc->howto = elf32_arm_howto_from_type (r_type); | |
1850 | } | |
1851 | ||
1852 | struct elf32_arm_reloc_map | |
1853 | { | |
1854 | bfd_reloc_code_real_type bfd_reloc_val; | |
1855 | unsigned char elf_reloc_val; | |
1856 | }; | |
1857 | ||
1858 | /* All entries in this list must also be present in elf32_arm_howto_table. */ | |
1859 | static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] = | |
1860 | { | |
1861 | {BFD_RELOC_NONE, R_ARM_NONE}, | |
1862 | {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24}, | |
39b41c9c PB |
1863 | {BFD_RELOC_ARM_PCREL_CALL, R_ARM_CALL}, |
1864 | {BFD_RELOC_ARM_PCREL_JUMP, R_ARM_JUMP24}, | |
7f266840 DJ |
1865 | {BFD_RELOC_ARM_PCREL_BLX, R_ARM_XPC25}, |
1866 | {BFD_RELOC_THUMB_PCREL_BLX, R_ARM_THM_XPC22}, | |
1867 | {BFD_RELOC_32, R_ARM_ABS32}, | |
1868 | {BFD_RELOC_32_PCREL, R_ARM_REL32}, | |
1869 | {BFD_RELOC_8, R_ARM_ABS8}, | |
1870 | {BFD_RELOC_16, R_ARM_ABS16}, | |
1871 | {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12}, | |
1872 | {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5}, | |
c19d1205 ZW |
1873 | {BFD_RELOC_THUMB_PCREL_BRANCH25, R_ARM_THM_JUMP24}, |
1874 | {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_CALL}, | |
1875 | {BFD_RELOC_THUMB_PCREL_BRANCH12, R_ARM_THM_JUMP11}, | |
1876 | {BFD_RELOC_THUMB_PCREL_BRANCH20, R_ARM_THM_JUMP19}, | |
1877 | {BFD_RELOC_THUMB_PCREL_BRANCH9, R_ARM_THM_JUMP8}, | |
1878 | {BFD_RELOC_THUMB_PCREL_BRANCH7, R_ARM_THM_JUMP6}, | |
7f266840 DJ |
1879 | {BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT}, |
1880 | {BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT}, | |
1881 | {BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE}, | |
c19d1205 | 1882 | {BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF32}, |
7f266840 | 1883 | {BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC}, |
b43420e6 | 1884 | {BFD_RELOC_ARM_GOT_PREL, R_ARM_GOT_PREL}, |
7f266840 DJ |
1885 | {BFD_RELOC_ARM_GOT32, R_ARM_GOT32}, |
1886 | {BFD_RELOC_ARM_PLT32, R_ARM_PLT32}, | |
1887 | {BFD_RELOC_ARM_TARGET1, R_ARM_TARGET1}, | |
1888 | {BFD_RELOC_ARM_ROSEGREL32, R_ARM_ROSEGREL32}, | |
1889 | {BFD_RELOC_ARM_SBREL32, R_ARM_SBREL32}, | |
1890 | {BFD_RELOC_ARM_PREL31, R_ARM_PREL31}, | |
ba93b8ac DJ |
1891 | {BFD_RELOC_ARM_TARGET2, R_ARM_TARGET2}, |
1892 | {BFD_RELOC_ARM_PLT32, R_ARM_PLT32}, | |
0855e32b NS |
1893 | {BFD_RELOC_ARM_TLS_GOTDESC, R_ARM_TLS_GOTDESC}, |
1894 | {BFD_RELOC_ARM_TLS_CALL, R_ARM_TLS_CALL}, | |
1895 | {BFD_RELOC_ARM_THM_TLS_CALL, R_ARM_THM_TLS_CALL}, | |
1896 | {BFD_RELOC_ARM_TLS_DESCSEQ, R_ARM_TLS_DESCSEQ}, | |
1897 | {BFD_RELOC_ARM_THM_TLS_DESCSEQ, R_ARM_THM_TLS_DESCSEQ}, | |
1898 | {BFD_RELOC_ARM_TLS_DESC, R_ARM_TLS_DESC}, | |
ba93b8ac DJ |
1899 | {BFD_RELOC_ARM_TLS_GD32, R_ARM_TLS_GD32}, |
1900 | {BFD_RELOC_ARM_TLS_LDO32, R_ARM_TLS_LDO32}, | |
1901 | {BFD_RELOC_ARM_TLS_LDM32, R_ARM_TLS_LDM32}, | |
1902 | {BFD_RELOC_ARM_TLS_DTPMOD32, R_ARM_TLS_DTPMOD32}, | |
1903 | {BFD_RELOC_ARM_TLS_DTPOFF32, R_ARM_TLS_DTPOFF32}, | |
1904 | {BFD_RELOC_ARM_TLS_TPOFF32, R_ARM_TLS_TPOFF32}, | |
1905 | {BFD_RELOC_ARM_TLS_IE32, R_ARM_TLS_IE32}, | |
1906 | {BFD_RELOC_ARM_TLS_LE32, R_ARM_TLS_LE32}, | |
34e77a92 | 1907 | {BFD_RELOC_ARM_IRELATIVE, R_ARM_IRELATIVE}, |
c19d1205 ZW |
1908 | {BFD_RELOC_VTABLE_INHERIT, R_ARM_GNU_VTINHERIT}, |
1909 | {BFD_RELOC_VTABLE_ENTRY, R_ARM_GNU_VTENTRY}, | |
b6895b4f PB |
1910 | {BFD_RELOC_ARM_MOVW, R_ARM_MOVW_ABS_NC}, |
1911 | {BFD_RELOC_ARM_MOVT, R_ARM_MOVT_ABS}, | |
1912 | {BFD_RELOC_ARM_MOVW_PCREL, R_ARM_MOVW_PREL_NC}, | |
1913 | {BFD_RELOC_ARM_MOVT_PCREL, R_ARM_MOVT_PREL}, | |
1914 | {BFD_RELOC_ARM_THUMB_MOVW, R_ARM_THM_MOVW_ABS_NC}, | |
1915 | {BFD_RELOC_ARM_THUMB_MOVT, R_ARM_THM_MOVT_ABS}, | |
1916 | {BFD_RELOC_ARM_THUMB_MOVW_PCREL, R_ARM_THM_MOVW_PREL_NC}, | |
1917 | {BFD_RELOC_ARM_THUMB_MOVT_PCREL, R_ARM_THM_MOVT_PREL}, | |
4962c51a MS |
1918 | {BFD_RELOC_ARM_ALU_PC_G0_NC, R_ARM_ALU_PC_G0_NC}, |
1919 | {BFD_RELOC_ARM_ALU_PC_G0, R_ARM_ALU_PC_G0}, | |
1920 | {BFD_RELOC_ARM_ALU_PC_G1_NC, R_ARM_ALU_PC_G1_NC}, | |
1921 | {BFD_RELOC_ARM_ALU_PC_G1, R_ARM_ALU_PC_G1}, | |
1922 | {BFD_RELOC_ARM_ALU_PC_G2, R_ARM_ALU_PC_G2}, | |
1923 | {BFD_RELOC_ARM_LDR_PC_G0, R_ARM_LDR_PC_G0}, | |
1924 | {BFD_RELOC_ARM_LDR_PC_G1, R_ARM_LDR_PC_G1}, | |
1925 | {BFD_RELOC_ARM_LDR_PC_G2, R_ARM_LDR_PC_G2}, | |
1926 | {BFD_RELOC_ARM_LDRS_PC_G0, R_ARM_LDRS_PC_G0}, | |
1927 | {BFD_RELOC_ARM_LDRS_PC_G1, R_ARM_LDRS_PC_G1}, | |
1928 | {BFD_RELOC_ARM_LDRS_PC_G2, R_ARM_LDRS_PC_G2}, | |
1929 | {BFD_RELOC_ARM_LDC_PC_G0, R_ARM_LDC_PC_G0}, | |
1930 | {BFD_RELOC_ARM_LDC_PC_G1, R_ARM_LDC_PC_G1}, | |
1931 | {BFD_RELOC_ARM_LDC_PC_G2, R_ARM_LDC_PC_G2}, | |
1932 | {BFD_RELOC_ARM_ALU_SB_G0_NC, R_ARM_ALU_SB_G0_NC}, | |
1933 | {BFD_RELOC_ARM_ALU_SB_G0, R_ARM_ALU_SB_G0}, | |
1934 | {BFD_RELOC_ARM_ALU_SB_G1_NC, R_ARM_ALU_SB_G1_NC}, | |
1935 | {BFD_RELOC_ARM_ALU_SB_G1, R_ARM_ALU_SB_G1}, | |
1936 | {BFD_RELOC_ARM_ALU_SB_G2, R_ARM_ALU_SB_G2}, | |
1937 | {BFD_RELOC_ARM_LDR_SB_G0, R_ARM_LDR_SB_G0}, | |
1938 | {BFD_RELOC_ARM_LDR_SB_G1, R_ARM_LDR_SB_G1}, | |
1939 | {BFD_RELOC_ARM_LDR_SB_G2, R_ARM_LDR_SB_G2}, | |
1940 | {BFD_RELOC_ARM_LDRS_SB_G0, R_ARM_LDRS_SB_G0}, | |
1941 | {BFD_RELOC_ARM_LDRS_SB_G1, R_ARM_LDRS_SB_G1}, | |
1942 | {BFD_RELOC_ARM_LDRS_SB_G2, R_ARM_LDRS_SB_G2}, | |
1943 | {BFD_RELOC_ARM_LDC_SB_G0, R_ARM_LDC_SB_G0}, | |
1944 | {BFD_RELOC_ARM_LDC_SB_G1, R_ARM_LDC_SB_G1}, | |
845b51d6 | 1945 | {BFD_RELOC_ARM_LDC_SB_G2, R_ARM_LDC_SB_G2}, |
72d98d16 MG |
1946 | {BFD_RELOC_ARM_V4BX, R_ARM_V4BX}, |
1947 | {BFD_RELOC_ARM_THUMB_ALU_ABS_G3_NC, R_ARM_THM_ALU_ABS_G3_NC}, | |
1948 | {BFD_RELOC_ARM_THUMB_ALU_ABS_G2_NC, R_ARM_THM_ALU_ABS_G2_NC}, | |
1949 | {BFD_RELOC_ARM_THUMB_ALU_ABS_G1_NC, R_ARM_THM_ALU_ABS_G1_NC}, | |
1950 | {BFD_RELOC_ARM_THUMB_ALU_ABS_G0_NC, R_ARM_THM_ALU_ABS_G0_NC} | |
7f266840 DJ |
1951 | }; |
1952 | ||
1953 | static reloc_howto_type * | |
f1c71a59 ZW |
1954 | elf32_arm_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
1955 | bfd_reloc_code_real_type code) | |
7f266840 DJ |
1956 | { |
1957 | unsigned int i; | |
8029a119 | 1958 | |
906e58ca | 1959 | for (i = 0; i < ARRAY_SIZE (elf32_arm_reloc_map); i ++) |
c19d1205 ZW |
1960 | if (elf32_arm_reloc_map[i].bfd_reloc_val == code) |
1961 | return elf32_arm_howto_from_type (elf32_arm_reloc_map[i].elf_reloc_val); | |
7f266840 | 1962 | |
c19d1205 | 1963 | return NULL; |
7f266840 DJ |
1964 | } |
1965 | ||
157090f7 AM |
1966 | static reloc_howto_type * |
1967 | elf32_arm_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1968 | const char *r_name) | |
1969 | { | |
1970 | unsigned int i; | |
1971 | ||
906e58ca | 1972 | for (i = 0; i < ARRAY_SIZE (elf32_arm_howto_table_1); i++) |
157090f7 AM |
1973 | if (elf32_arm_howto_table_1[i].name != NULL |
1974 | && strcasecmp (elf32_arm_howto_table_1[i].name, r_name) == 0) | |
1975 | return &elf32_arm_howto_table_1[i]; | |
1976 | ||
906e58ca | 1977 | for (i = 0; i < ARRAY_SIZE (elf32_arm_howto_table_2); i++) |
157090f7 AM |
1978 | if (elf32_arm_howto_table_2[i].name != NULL |
1979 | && strcasecmp (elf32_arm_howto_table_2[i].name, r_name) == 0) | |
1980 | return &elf32_arm_howto_table_2[i]; | |
1981 | ||
34e77a92 RS |
1982 | for (i = 0; i < ARRAY_SIZE (elf32_arm_howto_table_3); i++) |
1983 | if (elf32_arm_howto_table_3[i].name != NULL | |
1984 | && strcasecmp (elf32_arm_howto_table_3[i].name, r_name) == 0) | |
1985 | return &elf32_arm_howto_table_3[i]; | |
1986 | ||
157090f7 AM |
1987 | return NULL; |
1988 | } | |
1989 | ||
906e58ca NC |
1990 | /* Support for core dump NOTE sections. */ |
1991 | ||
7f266840 | 1992 | static bfd_boolean |
f1c71a59 | 1993 | elf32_arm_nabi_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
7f266840 DJ |
1994 | { |
1995 | int offset; | |
1996 | size_t size; | |
1997 | ||
1998 | switch (note->descsz) | |
1999 | { | |
2000 | default: | |
2001 | return FALSE; | |
2002 | ||
8029a119 | 2003 | case 148: /* Linux/ARM 32-bit. */ |
7f266840 | 2004 | /* pr_cursig */ |
228e534f | 2005 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
7f266840 DJ |
2006 | |
2007 | /* pr_pid */ | |
228e534f | 2008 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); |
7f266840 DJ |
2009 | |
2010 | /* pr_reg */ | |
2011 | offset = 72; | |
2012 | size = 72; | |
2013 | ||
2014 | break; | |
2015 | } | |
2016 | ||
2017 | /* Make a ".reg/999" section. */ | |
2018 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
2019 | size, note->descpos + offset); | |
2020 | } | |
2021 | ||
2022 | static bfd_boolean | |
f1c71a59 | 2023 | elf32_arm_nabi_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
7f266840 DJ |
2024 | { |
2025 | switch (note->descsz) | |
2026 | { | |
2027 | default: | |
2028 | return FALSE; | |
2029 | ||
8029a119 | 2030 | case 124: /* Linux/ARM elf_prpsinfo. */ |
228e534f | 2031 | elf_tdata (abfd)->core->pid |
4395ee08 | 2032 | = bfd_get_32 (abfd, note->descdata + 12); |
228e534f | 2033 | elf_tdata (abfd)->core->program |
7f266840 | 2034 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); |
228e534f | 2035 | elf_tdata (abfd)->core->command |
7f266840 DJ |
2036 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); |
2037 | } | |
2038 | ||
2039 | /* Note that for some reason, a spurious space is tacked | |
2040 | onto the end of the args in some (at least one anyway) | |
2041 | implementations, so strip it off if it exists. */ | |
7f266840 | 2042 | { |
228e534f | 2043 | char *command = elf_tdata (abfd)->core->command; |
7f266840 DJ |
2044 | int n = strlen (command); |
2045 | ||
2046 | if (0 < n && command[n - 1] == ' ') | |
2047 | command[n - 1] = '\0'; | |
2048 | } | |
2049 | ||
2050 | return TRUE; | |
2051 | } | |
2052 | ||
1f20dca5 UW |
2053 | static char * |
2054 | elf32_arm_nabi_write_core_note (bfd *abfd, char *buf, int *bufsiz, | |
2055 | int note_type, ...) | |
2056 | { | |
2057 | switch (note_type) | |
2058 | { | |
2059 | default: | |
2060 | return NULL; | |
2061 | ||
2062 | case NT_PRPSINFO: | |
2063 | { | |
2064 | char data[124]; | |
2065 | va_list ap; | |
2066 | ||
2067 | va_start (ap, note_type); | |
2068 | memset (data, 0, sizeof (data)); | |
2069 | strncpy (data + 28, va_arg (ap, const char *), 16); | |
2070 | strncpy (data + 44, va_arg (ap, const char *), 80); | |
2071 | va_end (ap); | |
2072 | ||
2073 | return elfcore_write_note (abfd, buf, bufsiz, | |
2074 | "CORE", note_type, data, sizeof (data)); | |
2075 | } | |
2076 | ||
2077 | case NT_PRSTATUS: | |
2078 | { | |
2079 | char data[148]; | |
2080 | va_list ap; | |
2081 | long pid; | |
2082 | int cursig; | |
2083 | const void *greg; | |
2084 | ||
2085 | va_start (ap, note_type); | |
2086 | memset (data, 0, sizeof (data)); | |
2087 | pid = va_arg (ap, long); | |
2088 | bfd_put_32 (abfd, pid, data + 24); | |
2089 | cursig = va_arg (ap, int); | |
2090 | bfd_put_16 (abfd, cursig, data + 12); | |
2091 | greg = va_arg (ap, const void *); | |
2092 | memcpy (data + 72, greg, 72); | |
2093 | va_end (ap); | |
2094 | ||
2095 | return elfcore_write_note (abfd, buf, bufsiz, | |
2096 | "CORE", note_type, data, sizeof (data)); | |
2097 | } | |
2098 | } | |
2099 | } | |
2100 | ||
6d00b590 | 2101 | #define TARGET_LITTLE_SYM arm_elf32_le_vec |
7f266840 | 2102 | #define TARGET_LITTLE_NAME "elf32-littlearm" |
6d00b590 | 2103 | #define TARGET_BIG_SYM arm_elf32_be_vec |
7f266840 DJ |
2104 | #define TARGET_BIG_NAME "elf32-bigarm" |
2105 | ||
2106 | #define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus | |
2107 | #define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo | |
1f20dca5 | 2108 | #define elf_backend_write_core_note elf32_arm_nabi_write_core_note |
7f266840 | 2109 | |
252b5132 RH |
2110 | typedef unsigned long int insn32; |
2111 | typedef unsigned short int insn16; | |
2112 | ||
3a4a14e9 PB |
2113 | /* In lieu of proper flags, assume all EABIv4 or later objects are |
2114 | interworkable. */ | |
57e8b36a | 2115 | #define INTERWORK_FLAG(abfd) \ |
3a4a14e9 | 2116 | (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \ |
3e6b1042 DJ |
2117 | || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK) \ |
2118 | || ((abfd)->flags & BFD_LINKER_CREATED)) | |
9b485d32 | 2119 | |
252b5132 RH |
2120 | /* The linker script knows the section names for placement. |
2121 | The entry_names are used to do simple name mangling on the stubs. | |
2122 | Given a function name, and its type, the stub can be found. The | |
9b485d32 | 2123 | name can be changed. The only requirement is the %s be present. */ |
252b5132 RH |
2124 | #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t" |
2125 | #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb" | |
2126 | ||
2127 | #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7" | |
2128 | #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm" | |
2129 | ||
c7b8f16e JB |
2130 | #define VFP11_ERRATUM_VENEER_SECTION_NAME ".vfp11_veneer" |
2131 | #define VFP11_ERRATUM_VENEER_ENTRY_NAME "__vfp11_veneer_%x" | |
2132 | ||
a504d23a LA |
2133 | #define STM32L4XX_ERRATUM_VENEER_SECTION_NAME ".text.stm32l4xx_veneer" |
2134 | #define STM32L4XX_ERRATUM_VENEER_ENTRY_NAME "__stm32l4xx_veneer_%x" | |
2135 | ||
845b51d6 PB |
2136 | #define ARM_BX_GLUE_SECTION_NAME ".v4_bx" |
2137 | #define ARM_BX_GLUE_ENTRY_NAME "__bx_r%d" | |
2138 | ||
7413f23f DJ |
2139 | #define STUB_ENTRY_NAME "__%s_veneer" |
2140 | ||
4ba2ef8f TP |
2141 | #define CMSE_PREFIX "__acle_se_" |
2142 | ||
252b5132 RH |
2143 | /* The name of the dynamic interpreter. This is put in the .interp |
2144 | section. */ | |
2145 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
2146 | ||
0855e32b | 2147 | static const unsigned long tls_trampoline [] = |
b38cadfb NC |
2148 | { |
2149 | 0xe08e0000, /* add r0, lr, r0 */ | |
2150 | 0xe5901004, /* ldr r1, [r0,#4] */ | |
2151 | 0xe12fff11, /* bx r1 */ | |
2152 | }; | |
0855e32b NS |
2153 | |
2154 | static const unsigned long dl_tlsdesc_lazy_trampoline [] = | |
b38cadfb NC |
2155 | { |
2156 | 0xe52d2004, /* push {r2} */ | |
2157 | 0xe59f200c, /* ldr r2, [pc, #3f - . - 8] */ | |
2158 | 0xe59f100c, /* ldr r1, [pc, #4f - . - 8] */ | |
2159 | 0xe79f2002, /* 1: ldr r2, [pc, r2] */ | |
2160 | 0xe081100f, /* 2: add r1, pc */ | |
2161 | 0xe12fff12, /* bx r2 */ | |
2162 | 0x00000014, /* 3: .word _GLOBAL_OFFSET_TABLE_ - 1b - 8 | |
99059e56 | 2163 | + dl_tlsdesc_lazy_resolver(GOT) */ |
b38cadfb NC |
2164 | 0x00000018, /* 4: .word _GLOBAL_OFFSET_TABLE_ - 2b - 8 */ |
2165 | }; | |
0855e32b | 2166 | |
5e681ec4 PB |
2167 | #ifdef FOUR_WORD_PLT |
2168 | ||
252b5132 RH |
2169 | /* The first entry in a procedure linkage table looks like |
2170 | this. It is set up so that any shared library function that is | |
59f2c4e7 | 2171 | called before the relocation has been set up calls the dynamic |
9b485d32 | 2172 | linker first. */ |
e5a52504 | 2173 | static const bfd_vma elf32_arm_plt0_entry [] = |
b38cadfb NC |
2174 | { |
2175 | 0xe52de004, /* str lr, [sp, #-4]! */ | |
2176 | 0xe59fe010, /* ldr lr, [pc, #16] */ | |
2177 | 0xe08fe00e, /* add lr, pc, lr */ | |
2178 | 0xe5bef008, /* ldr pc, [lr, #8]! */ | |
2179 | }; | |
5e681ec4 PB |
2180 | |
2181 | /* Subsequent entries in a procedure linkage table look like | |
2182 | this. */ | |
e5a52504 | 2183 | static const bfd_vma elf32_arm_plt_entry [] = |
b38cadfb NC |
2184 | { |
2185 | 0xe28fc600, /* add ip, pc, #NN */ | |
2186 | 0xe28cca00, /* add ip, ip, #NN */ | |
2187 | 0xe5bcf000, /* ldr pc, [ip, #NN]! */ | |
2188 | 0x00000000, /* unused */ | |
2189 | }; | |
5e681ec4 | 2190 | |
eed94f8f | 2191 | #else /* not FOUR_WORD_PLT */ |
5e681ec4 | 2192 | |
5e681ec4 PB |
2193 | /* The first entry in a procedure linkage table looks like |
2194 | this. It is set up so that any shared library function that is | |
2195 | called before the relocation has been set up calls the dynamic | |
2196 | linker first. */ | |
e5a52504 | 2197 | static const bfd_vma elf32_arm_plt0_entry [] = |
b38cadfb NC |
2198 | { |
2199 | 0xe52de004, /* str lr, [sp, #-4]! */ | |
2200 | 0xe59fe004, /* ldr lr, [pc, #4] */ | |
2201 | 0xe08fe00e, /* add lr, pc, lr */ | |
2202 | 0xe5bef008, /* ldr pc, [lr, #8]! */ | |
2203 | 0x00000000, /* &GOT[0] - . */ | |
2204 | }; | |
252b5132 | 2205 | |
1db37fe6 YG |
2206 | /* By default subsequent entries in a procedure linkage table look like |
2207 | this. Offsets that don't fit into 28 bits will cause link error. */ | |
2208 | static const bfd_vma elf32_arm_plt_entry_short [] = | |
b38cadfb NC |
2209 | { |
2210 | 0xe28fc600, /* add ip, pc, #0xNN00000 */ | |
2211 | 0xe28cca00, /* add ip, ip, #0xNN000 */ | |
2212 | 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */ | |
2213 | }; | |
5e681ec4 | 2214 | |
1db37fe6 YG |
2215 | /* When explicitly asked, we'll use this "long" entry format |
2216 | which can cope with arbitrary displacements. */ | |
2217 | static const bfd_vma elf32_arm_plt_entry_long [] = | |
2218 | { | |
2219 | 0xe28fc200, /* add ip, pc, #0xN0000000 */ | |
2220 | 0xe28cc600, /* add ip, ip, #0xNN00000 */ | |
2221 | 0xe28cca00, /* add ip, ip, #0xNN000 */ | |
2222 | 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */ | |
2223 | }; | |
2224 | ||
2225 | static bfd_boolean elf32_arm_use_long_plt_entry = FALSE; | |
2226 | ||
eed94f8f NC |
2227 | #endif /* not FOUR_WORD_PLT */ |
2228 | ||
2229 | /* The first entry in a procedure linkage table looks like this. | |
2230 | It is set up so that any shared library function that is called before the | |
2231 | relocation has been set up calls the dynamic linker first. */ | |
2232 | static const bfd_vma elf32_thumb2_plt0_entry [] = | |
2233 | { | |
2234 | /* NOTE: As this is a mixture of 16-bit and 32-bit instructions, | |
2235 | an instruction maybe encoded to one or two array elements. */ | |
2236 | 0xf8dfb500, /* push {lr} */ | |
2237 | 0x44fee008, /* ldr.w lr, [pc, #8] */ | |
469a3493 | 2238 | /* add lr, pc */ |
eed94f8f NC |
2239 | 0xff08f85e, /* ldr.w pc, [lr, #8]! */ |
2240 | 0x00000000, /* &GOT[0] - . */ | |
2241 | }; | |
2242 | ||
2243 | /* Subsequent entries in a procedure linkage table for thumb only target | |
2244 | look like this. */ | |
2245 | static const bfd_vma elf32_thumb2_plt_entry [] = | |
2246 | { | |
2247 | /* NOTE: As this is a mixture of 16-bit and 32-bit instructions, | |
2248 | an instruction maybe encoded to one or two array elements. */ | |
2249 | 0x0c00f240, /* movw ip, #0xNNNN */ | |
2250 | 0x0c00f2c0, /* movt ip, #0xNNNN */ | |
2251 | 0xf8dc44fc, /* add ip, pc */ | |
2252 | 0xbf00f000 /* ldr.w pc, [ip] */ | |
469a3493 | 2253 | /* nop */ |
eed94f8f | 2254 | }; |
252b5132 | 2255 | |
00a97672 RS |
2256 | /* The format of the first entry in the procedure linkage table |
2257 | for a VxWorks executable. */ | |
2258 | static const bfd_vma elf32_arm_vxworks_exec_plt0_entry[] = | |
b38cadfb NC |
2259 | { |
2260 | 0xe52dc008, /* str ip,[sp,#-8]! */ | |
2261 | 0xe59fc000, /* ldr ip,[pc] */ | |
2262 | 0xe59cf008, /* ldr pc,[ip,#8] */ | |
2263 | 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */ | |
2264 | }; | |
00a97672 RS |
2265 | |
2266 | /* The format of subsequent entries in a VxWorks executable. */ | |
2267 | static const bfd_vma elf32_arm_vxworks_exec_plt_entry[] = | |
b38cadfb NC |
2268 | { |
2269 | 0xe59fc000, /* ldr ip,[pc] */ | |
2270 | 0xe59cf000, /* ldr pc,[ip] */ | |
2271 | 0x00000000, /* .long @got */ | |
2272 | 0xe59fc000, /* ldr ip,[pc] */ | |
2273 | 0xea000000, /* b _PLT */ | |
2274 | 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */ | |
2275 | }; | |
00a97672 RS |
2276 | |
2277 | /* The format of entries in a VxWorks shared library. */ | |
2278 | static const bfd_vma elf32_arm_vxworks_shared_plt_entry[] = | |
b38cadfb NC |
2279 | { |
2280 | 0xe59fc000, /* ldr ip,[pc] */ | |
2281 | 0xe79cf009, /* ldr pc,[ip,r9] */ | |
2282 | 0x00000000, /* .long @got */ | |
2283 | 0xe59fc000, /* ldr ip,[pc] */ | |
2284 | 0xe599f008, /* ldr pc,[r9,#8] */ | |
2285 | 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */ | |
2286 | }; | |
00a97672 | 2287 | |
b7693d02 DJ |
2288 | /* An initial stub used if the PLT entry is referenced from Thumb code. */ |
2289 | #define PLT_THUMB_STUB_SIZE 4 | |
2290 | static const bfd_vma elf32_arm_plt_thumb_stub [] = | |
b38cadfb NC |
2291 | { |
2292 | 0x4778, /* bx pc */ | |
2293 | 0x46c0 /* nop */ | |
2294 | }; | |
b7693d02 | 2295 | |
e5a52504 MM |
2296 | /* The entries in a PLT when using a DLL-based target with multiple |
2297 | address spaces. */ | |
906e58ca | 2298 | static const bfd_vma elf32_arm_symbian_plt_entry [] = |
b38cadfb NC |
2299 | { |
2300 | 0xe51ff004, /* ldr pc, [pc, #-4] */ | |
2301 | 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */ | |
2302 | }; | |
2303 | ||
2304 | /* The first entry in a procedure linkage table looks like | |
2305 | this. It is set up so that any shared library function that is | |
2306 | called before the relocation has been set up calls the dynamic | |
2307 | linker first. */ | |
2308 | static const bfd_vma elf32_arm_nacl_plt0_entry [] = | |
2309 | { | |
2310 | /* First bundle: */ | |
2311 | 0xe300c000, /* movw ip, #:lower16:&GOT[2]-.+8 */ | |
2312 | 0xe340c000, /* movt ip, #:upper16:&GOT[2]-.+8 */ | |
2313 | 0xe08cc00f, /* add ip, ip, pc */ | |
2314 | 0xe52dc008, /* str ip, [sp, #-8]! */ | |
2315 | /* Second bundle: */ | |
edccdf7c RM |
2316 | 0xe3ccc103, /* bic ip, ip, #0xc0000000 */ |
2317 | 0xe59cc000, /* ldr ip, [ip] */ | |
b38cadfb | 2318 | 0xe3ccc13f, /* bic ip, ip, #0xc000000f */ |
edccdf7c | 2319 | 0xe12fff1c, /* bx ip */ |
b38cadfb | 2320 | /* Third bundle: */ |
edccdf7c RM |
2321 | 0xe320f000, /* nop */ |
2322 | 0xe320f000, /* nop */ | |
2323 | 0xe320f000, /* nop */ | |
b38cadfb NC |
2324 | /* .Lplt_tail: */ |
2325 | 0xe50dc004, /* str ip, [sp, #-4] */ | |
2326 | /* Fourth bundle: */ | |
edccdf7c RM |
2327 | 0xe3ccc103, /* bic ip, ip, #0xc0000000 */ |
2328 | 0xe59cc000, /* ldr ip, [ip] */ | |
b38cadfb | 2329 | 0xe3ccc13f, /* bic ip, ip, #0xc000000f */ |
edccdf7c | 2330 | 0xe12fff1c, /* bx ip */ |
b38cadfb NC |
2331 | }; |
2332 | #define ARM_NACL_PLT_TAIL_OFFSET (11 * 4) | |
2333 | ||
2334 | /* Subsequent entries in a procedure linkage table look like this. */ | |
2335 | static const bfd_vma elf32_arm_nacl_plt_entry [] = | |
2336 | { | |
2337 | 0xe300c000, /* movw ip, #:lower16:&GOT[n]-.+8 */ | |
2338 | 0xe340c000, /* movt ip, #:upper16:&GOT[n]-.+8 */ | |
2339 | 0xe08cc00f, /* add ip, ip, pc */ | |
2340 | 0xea000000, /* b .Lplt_tail */ | |
2341 | }; | |
e5a52504 | 2342 | |
906e58ca NC |
2343 | #define ARM_MAX_FWD_BRANCH_OFFSET ((((1 << 23) - 1) << 2) + 8) |
2344 | #define ARM_MAX_BWD_BRANCH_OFFSET ((-((1 << 23) << 2)) + 8) | |
2345 | #define THM_MAX_FWD_BRANCH_OFFSET ((1 << 22) -2 + 4) | |
2346 | #define THM_MAX_BWD_BRANCH_OFFSET (-(1 << 22) + 4) | |
2347 | #define THM2_MAX_FWD_BRANCH_OFFSET (((1 << 24) - 2) + 4) | |
2348 | #define THM2_MAX_BWD_BRANCH_OFFSET (-(1 << 24) + 4) | |
c5423981 TG |
2349 | #define THM2_MAX_FWD_COND_BRANCH_OFFSET (((1 << 20) -2) + 4) |
2350 | #define THM2_MAX_BWD_COND_BRANCH_OFFSET (-(1 << 20) + 4) | |
906e58ca | 2351 | |
461a49ca | 2352 | enum stub_insn_type |
b38cadfb NC |
2353 | { |
2354 | THUMB16_TYPE = 1, | |
2355 | THUMB32_TYPE, | |
2356 | ARM_TYPE, | |
2357 | DATA_TYPE | |
2358 | }; | |
461a49ca | 2359 | |
48229727 JB |
2360 | #define THUMB16_INSN(X) {(X), THUMB16_TYPE, R_ARM_NONE, 0} |
2361 | /* A bit of a hack. A Thumb conditional branch, in which the proper condition | |
2362 | is inserted in arm_build_one_stub(). */ | |
2363 | #define THUMB16_BCOND_INSN(X) {(X), THUMB16_TYPE, R_ARM_NONE, 1} | |
2364 | #define THUMB32_INSN(X) {(X), THUMB32_TYPE, R_ARM_NONE, 0} | |
d5a67c02 AV |
2365 | #define THUMB32_MOVT(X) {(X), THUMB32_TYPE, R_ARM_THM_MOVT_ABS, 0} |
2366 | #define THUMB32_MOVW(X) {(X), THUMB32_TYPE, R_ARM_THM_MOVW_ABS_NC, 0} | |
48229727 JB |
2367 | #define THUMB32_B_INSN(X, Z) {(X), THUMB32_TYPE, R_ARM_THM_JUMP24, (Z)} |
2368 | #define ARM_INSN(X) {(X), ARM_TYPE, R_ARM_NONE, 0} | |
2369 | #define ARM_REL_INSN(X, Z) {(X), ARM_TYPE, R_ARM_JUMP24, (Z)} | |
2370 | #define DATA_WORD(X,Y,Z) {(X), DATA_TYPE, (Y), (Z)} | |
461a49ca DJ |
2371 | |
2372 | typedef struct | |
2373 | { | |
b38cadfb NC |
2374 | bfd_vma data; |
2375 | enum stub_insn_type type; | |
2376 | unsigned int r_type; | |
2377 | int reloc_addend; | |
461a49ca DJ |
2378 | } insn_sequence; |
2379 | ||
fea2b4d6 CL |
2380 | /* Arm/Thumb -> Arm/Thumb long branch stub. On V5T and above, use blx |
2381 | to reach the stub if necessary. */ | |
461a49ca | 2382 | static const insn_sequence elf32_arm_stub_long_branch_any_any[] = |
b38cadfb NC |
2383 | { |
2384 | ARM_INSN (0xe51ff004), /* ldr pc, [pc, #-4] */ | |
2385 | DATA_WORD (0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */ | |
2386 | }; | |
906e58ca | 2387 | |
fea2b4d6 CL |
2388 | /* V4T Arm -> Thumb long branch stub. Used on V4T where blx is not |
2389 | available. */ | |
461a49ca | 2390 | static const insn_sequence elf32_arm_stub_long_branch_v4t_arm_thumb[] = |
b38cadfb NC |
2391 | { |
2392 | ARM_INSN (0xe59fc000), /* ldr ip, [pc, #0] */ | |
2393 | ARM_INSN (0xe12fff1c), /* bx ip */ | |
2394 | DATA_WORD (0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */ | |
2395 | }; | |
906e58ca | 2396 | |
d3626fb0 | 2397 | /* Thumb -> Thumb long branch stub. Used on M-profile architectures. */ |
461a49ca | 2398 | static const insn_sequence elf32_arm_stub_long_branch_thumb_only[] = |
b38cadfb NC |
2399 | { |
2400 | THUMB16_INSN (0xb401), /* push {r0} */ | |
2401 | THUMB16_INSN (0x4802), /* ldr r0, [pc, #8] */ | |
2402 | THUMB16_INSN (0x4684), /* mov ip, r0 */ | |
2403 | THUMB16_INSN (0xbc01), /* pop {r0} */ | |
2404 | THUMB16_INSN (0x4760), /* bx ip */ | |
2405 | THUMB16_INSN (0xbf00), /* nop */ | |
2406 | DATA_WORD (0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */ | |
2407 | }; | |
906e58ca | 2408 | |
80c135e5 TP |
2409 | /* Thumb -> Thumb long branch stub in thumb2 encoding. Used on armv7. */ |
2410 | static const insn_sequence elf32_arm_stub_long_branch_thumb2_only[] = | |
2411 | { | |
2412 | THUMB32_INSN (0xf85ff000), /* ldr.w pc, [pc, #-0] */ | |
2413 | DATA_WORD (0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(x) */ | |
2414 | }; | |
2415 | ||
d5a67c02 AV |
2416 | /* Thumb -> Thumb long branch stub. Used for PureCode sections on Thumb2 |
2417 | M-profile architectures. */ | |
2418 | static const insn_sequence elf32_arm_stub_long_branch_thumb2_only_pure[] = | |
2419 | { | |
2420 | THUMB32_MOVW (0xf2400c00), /* mov.w ip, R_ARM_MOVW_ABS_NC */ | |
2421 | THUMB32_MOVT (0xf2c00c00), /* movt ip, R_ARM_MOVT_ABS << 16 */ | |
2422 | THUMB16_INSN (0x4760), /* bx ip */ | |
2423 | }; | |
2424 | ||
d3626fb0 CL |
2425 | /* V4T Thumb -> Thumb long branch stub. Using the stack is not |
2426 | allowed. */ | |
2427 | static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_thumb[] = | |
b38cadfb NC |
2428 | { |
2429 | THUMB16_INSN (0x4778), /* bx pc */ | |
2430 | THUMB16_INSN (0x46c0), /* nop */ | |
2431 | ARM_INSN (0xe59fc000), /* ldr ip, [pc, #0] */ | |
2432 | ARM_INSN (0xe12fff1c), /* bx ip */ | |
2433 | DATA_WORD (0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */ | |
2434 | }; | |
d3626fb0 | 2435 | |
fea2b4d6 CL |
2436 | /* V4T Thumb -> ARM long branch stub. Used on V4T where blx is not |
2437 | available. */ | |
461a49ca | 2438 | static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_arm[] = |
b38cadfb NC |
2439 | { |
2440 | THUMB16_INSN (0x4778), /* bx pc */ | |
2441 | THUMB16_INSN (0x46c0), /* nop */ | |
2442 | ARM_INSN (0xe51ff004), /* ldr pc, [pc, #-4] */ | |
2443 | DATA_WORD (0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */ | |
2444 | }; | |
906e58ca | 2445 | |
fea2b4d6 CL |
2446 | /* V4T Thumb -> ARM short branch stub. Shorter variant of the above |
2447 | one, when the destination is close enough. */ | |
461a49ca | 2448 | static const insn_sequence elf32_arm_stub_short_branch_v4t_thumb_arm[] = |
b38cadfb NC |
2449 | { |
2450 | THUMB16_INSN (0x4778), /* bx pc */ | |
2451 | THUMB16_INSN (0x46c0), /* nop */ | |
2452 | ARM_REL_INSN (0xea000000, -8), /* b (X-8) */ | |
2453 | }; | |
c820be07 | 2454 | |
cf3eccff | 2455 | /* ARM/Thumb -> ARM long branch stub, PIC. On V5T and above, use |
fea2b4d6 | 2456 | blx to reach the stub if necessary. */ |
cf3eccff | 2457 | static const insn_sequence elf32_arm_stub_long_branch_any_arm_pic[] = |
b38cadfb NC |
2458 | { |
2459 | ARM_INSN (0xe59fc000), /* ldr ip, [pc] */ | |
2460 | ARM_INSN (0xe08ff00c), /* add pc, pc, ip */ | |
2461 | DATA_WORD (0, R_ARM_REL32, -4), /* dcd R_ARM_REL32(X-4) */ | |
2462 | }; | |
906e58ca | 2463 | |
cf3eccff DJ |
2464 | /* ARM/Thumb -> Thumb long branch stub, PIC. On V5T and above, use |
2465 | blx to reach the stub if necessary. We can not add into pc; | |
2466 | it is not guaranteed to mode switch (different in ARMv6 and | |
2467 | ARMv7). */ | |
2468 | static const insn_sequence elf32_arm_stub_long_branch_any_thumb_pic[] = | |
b38cadfb NC |
2469 | { |
2470 | ARM_INSN (0xe59fc004), /* ldr ip, [pc, #4] */ | |
2471 | ARM_INSN (0xe08fc00c), /* add ip, pc, ip */ | |
2472 | ARM_INSN (0xe12fff1c), /* bx ip */ | |
2473 | DATA_WORD (0, R_ARM_REL32, 0), /* dcd R_ARM_REL32(X) */ | |
2474 | }; | |
cf3eccff | 2475 | |
ebe24dd4 CL |
2476 | /* V4T ARM -> ARM long branch stub, PIC. */ |
2477 | static const insn_sequence elf32_arm_stub_long_branch_v4t_arm_thumb_pic[] = | |
b38cadfb NC |
2478 | { |
2479 | ARM_INSN (0xe59fc004), /* ldr ip, [pc, #4] */ | |
2480 | ARM_INSN (0xe08fc00c), /* add ip, pc, ip */ | |
2481 | ARM_INSN (0xe12fff1c), /* bx ip */ | |
2482 | DATA_WORD (0, R_ARM_REL32, 0), /* dcd R_ARM_REL32(X) */ | |
2483 | }; | |
ebe24dd4 CL |
2484 | |
2485 | /* V4T Thumb -> ARM long branch stub, PIC. */ | |
2486 | static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_arm_pic[] = | |
b38cadfb NC |
2487 | { |
2488 | THUMB16_INSN (0x4778), /* bx pc */ | |
2489 | THUMB16_INSN (0x46c0), /* nop */ | |
2490 | ARM_INSN (0xe59fc000), /* ldr ip, [pc, #0] */ | |
2491 | ARM_INSN (0xe08cf00f), /* add pc, ip, pc */ | |
2492 | DATA_WORD (0, R_ARM_REL32, -4), /* dcd R_ARM_REL32(X) */ | |
2493 | }; | |
ebe24dd4 | 2494 | |
d3626fb0 CL |
2495 | /* Thumb -> Thumb long branch stub, PIC. Used on M-profile |
2496 | architectures. */ | |
ebe24dd4 | 2497 | static const insn_sequence elf32_arm_stub_long_branch_thumb_only_pic[] = |
b38cadfb NC |
2498 | { |
2499 | THUMB16_INSN (0xb401), /* push {r0} */ | |
2500 | THUMB16_INSN (0x4802), /* ldr r0, [pc, #8] */ | |
2501 | THUMB16_INSN (0x46fc), /* mov ip, pc */ | |
2502 | THUMB16_INSN (0x4484), /* add ip, r0 */ | |
2503 | THUMB16_INSN (0xbc01), /* pop {r0} */ | |
2504 | THUMB16_INSN (0x4760), /* bx ip */ | |
2505 | DATA_WORD (0, R_ARM_REL32, 4), /* dcd R_ARM_REL32(X) */ | |
2506 | }; | |
ebe24dd4 | 2507 | |
d3626fb0 CL |
2508 | /* V4T Thumb -> Thumb long branch stub, PIC. Using the stack is not |
2509 | allowed. */ | |
2510 | static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_thumb_pic[] = | |
b38cadfb NC |
2511 | { |
2512 | THUMB16_INSN (0x4778), /* bx pc */ | |
2513 | THUMB16_INSN (0x46c0), /* nop */ | |
2514 | ARM_INSN (0xe59fc004), /* ldr ip, [pc, #4] */ | |
2515 | ARM_INSN (0xe08fc00c), /* add ip, pc, ip */ | |
2516 | ARM_INSN (0xe12fff1c), /* bx ip */ | |
2517 | DATA_WORD (0, R_ARM_REL32, 0), /* dcd R_ARM_REL32(X) */ | |
2518 | }; | |
d3626fb0 | 2519 | |
0855e32b NS |
2520 | /* Thumb2/ARM -> TLS trampoline. Lowest common denominator, which is a |
2521 | long PIC stub. We can use r1 as a scratch -- and cannot use ip. */ | |
2522 | static const insn_sequence elf32_arm_stub_long_branch_any_tls_pic[] = | |
2523 | { | |
b38cadfb NC |
2524 | ARM_INSN (0xe59f1000), /* ldr r1, [pc] */ |
2525 | ARM_INSN (0xe08ff001), /* add pc, pc, r1 */ | |
2526 | DATA_WORD (0, R_ARM_REL32, -4), /* dcd R_ARM_REL32(X-4) */ | |
0855e32b NS |
2527 | }; |
2528 | ||
2529 | /* V4T Thumb -> TLS trampoline. lowest common denominator, which is a | |
2530 | long PIC stub. We can use r1 as a scratch -- and cannot use ip. */ | |
2531 | static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_tls_pic[] = | |
2532 | { | |
b38cadfb NC |
2533 | THUMB16_INSN (0x4778), /* bx pc */ |
2534 | THUMB16_INSN (0x46c0), /* nop */ | |
2535 | ARM_INSN (0xe59f1000), /* ldr r1, [pc, #0] */ | |
2536 | ARM_INSN (0xe081f00f), /* add pc, r1, pc */ | |
2537 | DATA_WORD (0, R_ARM_REL32, -4), /* dcd R_ARM_REL32(X) */ | |
0855e32b NS |
2538 | }; |
2539 | ||
7a89b94e NC |
2540 | /* NaCl ARM -> ARM long branch stub. */ |
2541 | static const insn_sequence elf32_arm_stub_long_branch_arm_nacl[] = | |
2542 | { | |
2543 | ARM_INSN (0xe59fc00c), /* ldr ip, [pc, #12] */ | |
2544 | ARM_INSN (0xe3ccc13f), /* bic ip, ip, #0xc000000f */ | |
2545 | ARM_INSN (0xe12fff1c), /* bx ip */ | |
2546 | ARM_INSN (0xe320f000), /* nop */ | |
2547 | ARM_INSN (0xe125be70), /* bkpt 0x5be0 */ | |
2548 | DATA_WORD (0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */ | |
2549 | DATA_WORD (0, R_ARM_NONE, 0), /* .word 0 */ | |
2550 | DATA_WORD (0, R_ARM_NONE, 0), /* .word 0 */ | |
2551 | }; | |
2552 | ||
2553 | /* NaCl ARM -> ARM long branch stub, PIC. */ | |
2554 | static const insn_sequence elf32_arm_stub_long_branch_arm_nacl_pic[] = | |
2555 | { | |
2556 | ARM_INSN (0xe59fc00c), /* ldr ip, [pc, #12] */ | |
2557 | ARM_INSN (0xe08cc00f), /* add ip, ip, pc */ | |
2558 | ARM_INSN (0xe3ccc13f), /* bic ip, ip, #0xc000000f */ | |
2559 | ARM_INSN (0xe12fff1c), /* bx ip */ | |
2560 | ARM_INSN (0xe125be70), /* bkpt 0x5be0 */ | |
2561 | DATA_WORD (0, R_ARM_REL32, 8), /* dcd R_ARM_REL32(X+8) */ | |
2562 | DATA_WORD (0, R_ARM_NONE, 0), /* .word 0 */ | |
2563 | DATA_WORD (0, R_ARM_NONE, 0), /* .word 0 */ | |
2564 | }; | |
2565 | ||
4ba2ef8f TP |
2566 | /* Stub used for transition to secure state (aka SG veneer). */ |
2567 | static const insn_sequence elf32_arm_stub_cmse_branch_thumb_only[] = | |
2568 | { | |
2569 | THUMB32_INSN (0xe97fe97f), /* sg. */ | |
2570 | THUMB32_B_INSN (0xf000b800, -4), /* b.w original_branch_dest. */ | |
2571 | }; | |
2572 | ||
7a89b94e | 2573 | |
48229727 JB |
2574 | /* Cortex-A8 erratum-workaround stubs. */ |
2575 | ||
2576 | /* Stub used for conditional branches (which may be beyond +/-1MB away, so we | |
2577 | can't use a conditional branch to reach this stub). */ | |
2578 | ||
2579 | static const insn_sequence elf32_arm_stub_a8_veneer_b_cond[] = | |
b38cadfb NC |
2580 | { |
2581 | THUMB16_BCOND_INSN (0xd001), /* b<cond>.n true. */ | |
2582 | THUMB32_B_INSN (0xf000b800, -4), /* b.w insn_after_original_branch. */ | |
2583 | THUMB32_B_INSN (0xf000b800, -4) /* true: b.w original_branch_dest. */ | |
2584 | }; | |
48229727 JB |
2585 | |
2586 | /* Stub used for b.w and bl.w instructions. */ | |
2587 | ||
2588 | static const insn_sequence elf32_arm_stub_a8_veneer_b[] = | |
b38cadfb NC |
2589 | { |
2590 | THUMB32_B_INSN (0xf000b800, -4) /* b.w original_branch_dest. */ | |
2591 | }; | |
48229727 JB |
2592 | |
2593 | static const insn_sequence elf32_arm_stub_a8_veneer_bl[] = | |
b38cadfb NC |
2594 | { |
2595 | THUMB32_B_INSN (0xf000b800, -4) /* b.w original_branch_dest. */ | |
2596 | }; | |
48229727 JB |
2597 | |
2598 | /* Stub used for Thumb-2 blx.w instructions. We modified the original blx.w | |
2599 | instruction (which switches to ARM mode) to point to this stub. Jump to the | |
2600 | real destination using an ARM-mode branch. */ | |
2601 | ||
2602 | static const insn_sequence elf32_arm_stub_a8_veneer_blx[] = | |
b38cadfb NC |
2603 | { |
2604 | ARM_REL_INSN (0xea000000, -8) /* b original_branch_dest. */ | |
2605 | }; | |
48229727 | 2606 | |
9553db3c NC |
2607 | /* For each section group there can be a specially created linker section |
2608 | to hold the stubs for that group. The name of the stub section is based | |
2609 | upon the name of another section within that group with the suffix below | |
2610 | applied. | |
2611 | ||
2612 | PR 13049: STUB_SUFFIX used to be ".stub", but this allowed the user to | |
2613 | create what appeared to be a linker stub section when it actually | |
2614 | contained user code/data. For example, consider this fragment: | |
b38cadfb | 2615 | |
9553db3c NC |
2616 | const char * stubborn_problems[] = { "np" }; |
2617 | ||
2618 | If this is compiled with "-fPIC -fdata-sections" then gcc produces a | |
2619 | section called: | |
2620 | ||
2621 | .data.rel.local.stubborn_problems | |
2622 | ||
2623 | This then causes problems in arm32_arm_build_stubs() as it triggers: | |
2624 | ||
2625 | // Ignore non-stub sections. | |
2626 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
2627 | continue; | |
2628 | ||
2629 | And so the section would be ignored instead of being processed. Hence | |
2630 | the change in definition of STUB_SUFFIX to a name that cannot be a valid | |
2631 | C identifier. */ | |
2632 | #define STUB_SUFFIX ".__stub" | |
906e58ca | 2633 | |
738a79f6 CL |
2634 | /* One entry per long/short branch stub defined above. */ |
2635 | #define DEF_STUBS \ | |
2636 | DEF_STUB(long_branch_any_any) \ | |
2637 | DEF_STUB(long_branch_v4t_arm_thumb) \ | |
2638 | DEF_STUB(long_branch_thumb_only) \ | |
2639 | DEF_STUB(long_branch_v4t_thumb_thumb) \ | |
2640 | DEF_STUB(long_branch_v4t_thumb_arm) \ | |
2641 | DEF_STUB(short_branch_v4t_thumb_arm) \ | |
2642 | DEF_STUB(long_branch_any_arm_pic) \ | |
2643 | DEF_STUB(long_branch_any_thumb_pic) \ | |
2644 | DEF_STUB(long_branch_v4t_thumb_thumb_pic) \ | |
2645 | DEF_STUB(long_branch_v4t_arm_thumb_pic) \ | |
2646 | DEF_STUB(long_branch_v4t_thumb_arm_pic) \ | |
48229727 | 2647 | DEF_STUB(long_branch_thumb_only_pic) \ |
0855e32b NS |
2648 | DEF_STUB(long_branch_any_tls_pic) \ |
2649 | DEF_STUB(long_branch_v4t_thumb_tls_pic) \ | |
7a89b94e NC |
2650 | DEF_STUB(long_branch_arm_nacl) \ |
2651 | DEF_STUB(long_branch_arm_nacl_pic) \ | |
4ba2ef8f | 2652 | DEF_STUB(cmse_branch_thumb_only) \ |
48229727 JB |
2653 | DEF_STUB(a8_veneer_b_cond) \ |
2654 | DEF_STUB(a8_veneer_b) \ | |
2655 | DEF_STUB(a8_veneer_bl) \ | |
80c135e5 TP |
2656 | DEF_STUB(a8_veneer_blx) \ |
2657 | DEF_STUB(long_branch_thumb2_only) \ | |
d5a67c02 | 2658 | DEF_STUB(long_branch_thumb2_only_pure) |
738a79f6 CL |
2659 | |
2660 | #define DEF_STUB(x) arm_stub_##x, | |
b38cadfb NC |
2661 | enum elf32_arm_stub_type |
2662 | { | |
906e58ca | 2663 | arm_stub_none, |
738a79f6 | 2664 | DEF_STUBS |
4f4faa4d | 2665 | max_stub_type |
738a79f6 CL |
2666 | }; |
2667 | #undef DEF_STUB | |
2668 | ||
8d9d9490 TP |
2669 | /* Note the first a8_veneer type. */ |
2670 | const unsigned arm_stub_a8_veneer_lwm = arm_stub_a8_veneer_b_cond; | |
2671 | ||
738a79f6 CL |
2672 | typedef struct |
2673 | { | |
d3ce72d0 | 2674 | const insn_sequence* template_sequence; |
738a79f6 CL |
2675 | int template_size; |
2676 | } stub_def; | |
2677 | ||
2678 | #define DEF_STUB(x) {elf32_arm_stub_##x, ARRAY_SIZE(elf32_arm_stub_##x)}, | |
b38cadfb NC |
2679 | static const stub_def stub_definitions[] = |
2680 | { | |
738a79f6 CL |
2681 | {NULL, 0}, |
2682 | DEF_STUBS | |
906e58ca NC |
2683 | }; |
2684 | ||
2685 | struct elf32_arm_stub_hash_entry | |
2686 | { | |
2687 | /* Base hash table entry structure. */ | |
2688 | struct bfd_hash_entry root; | |
2689 | ||
2690 | /* The stub section. */ | |
2691 | asection *stub_sec; | |
2692 | ||
2693 | /* Offset within stub_sec of the beginning of this stub. */ | |
2694 | bfd_vma stub_offset; | |
2695 | ||
2696 | /* Given the symbol's value and its section we can determine its final | |
2697 | value when building the stubs (so the stub knows where to jump). */ | |
2698 | bfd_vma target_value; | |
2699 | asection *target_section; | |
2700 | ||
8d9d9490 TP |
2701 | /* Same as above but for the source of the branch to the stub. Used for |
2702 | Cortex-A8 erratum workaround to patch it to branch to the stub. As | |
2703 | such, source section does not need to be recorded since Cortex-A8 erratum | |
2704 | workaround stubs are only generated when both source and target are in the | |
2705 | same section. */ | |
2706 | bfd_vma source_value; | |
48229727 JB |
2707 | |
2708 | /* The instruction which caused this stub to be generated (only valid for | |
2709 | Cortex-A8 erratum workaround stubs at present). */ | |
2710 | unsigned long orig_insn; | |
2711 | ||
461a49ca | 2712 | /* The stub type. */ |
906e58ca | 2713 | enum elf32_arm_stub_type stub_type; |
461a49ca DJ |
2714 | /* Its encoding size in bytes. */ |
2715 | int stub_size; | |
2716 | /* Its template. */ | |
2717 | const insn_sequence *stub_template; | |
2718 | /* The size of the template (number of entries). */ | |
2719 | int stub_template_size; | |
906e58ca NC |
2720 | |
2721 | /* The symbol table entry, if any, that this was derived from. */ | |
2722 | struct elf32_arm_link_hash_entry *h; | |
2723 | ||
35fc36a8 RS |
2724 | /* Type of branch. */ |
2725 | enum arm_st_branch_type branch_type; | |
906e58ca NC |
2726 | |
2727 | /* Where this stub is being called from, or, in the case of combined | |
2728 | stub sections, the first input section in the group. */ | |
2729 | asection *id_sec; | |
7413f23f DJ |
2730 | |
2731 | /* The name for the local symbol at the start of this stub. The | |
2732 | stub name in the hash table has to be unique; this does not, so | |
2733 | it can be friendlier. */ | |
2734 | char *output_name; | |
906e58ca NC |
2735 | }; |
2736 | ||
e489d0ae PB |
2737 | /* Used to build a map of a section. This is required for mixed-endian |
2738 | code/data. */ | |
2739 | ||
2740 | typedef struct elf32_elf_section_map | |
2741 | { | |
2742 | bfd_vma vma; | |
2743 | char type; | |
2744 | } | |
2745 | elf32_arm_section_map; | |
2746 | ||
c7b8f16e JB |
2747 | /* Information about a VFP11 erratum veneer, or a branch to such a veneer. */ |
2748 | ||
2749 | typedef enum | |
2750 | { | |
2751 | VFP11_ERRATUM_BRANCH_TO_ARM_VENEER, | |
2752 | VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER, | |
2753 | VFP11_ERRATUM_ARM_VENEER, | |
2754 | VFP11_ERRATUM_THUMB_VENEER | |
2755 | } | |
2756 | elf32_vfp11_erratum_type; | |
2757 | ||
2758 | typedef struct elf32_vfp11_erratum_list | |
2759 | { | |
2760 | struct elf32_vfp11_erratum_list *next; | |
2761 | bfd_vma vma; | |
2762 | union | |
2763 | { | |
2764 | struct | |
2765 | { | |
2766 | struct elf32_vfp11_erratum_list *veneer; | |
2767 | unsigned int vfp_insn; | |
2768 | } b; | |
2769 | struct | |
2770 | { | |
2771 | struct elf32_vfp11_erratum_list *branch; | |
2772 | unsigned int id; | |
2773 | } v; | |
2774 | } u; | |
2775 | elf32_vfp11_erratum_type type; | |
2776 | } | |
2777 | elf32_vfp11_erratum_list; | |
2778 | ||
a504d23a LA |
2779 | /* Information about a STM32L4XX erratum veneer, or a branch to such a |
2780 | veneer. */ | |
2781 | typedef enum | |
2782 | { | |
2783 | STM32L4XX_ERRATUM_BRANCH_TO_VENEER, | |
2784 | STM32L4XX_ERRATUM_VENEER | |
2785 | } | |
2786 | elf32_stm32l4xx_erratum_type; | |
2787 | ||
2788 | typedef struct elf32_stm32l4xx_erratum_list | |
2789 | { | |
2790 | struct elf32_stm32l4xx_erratum_list *next; | |
2791 | bfd_vma vma; | |
2792 | union | |
2793 | { | |
2794 | struct | |
2795 | { | |
2796 | struct elf32_stm32l4xx_erratum_list *veneer; | |
2797 | unsigned int insn; | |
2798 | } b; | |
2799 | struct | |
2800 | { | |
2801 | struct elf32_stm32l4xx_erratum_list *branch; | |
2802 | unsigned int id; | |
2803 | } v; | |
2804 | } u; | |
2805 | elf32_stm32l4xx_erratum_type type; | |
2806 | } | |
2807 | elf32_stm32l4xx_erratum_list; | |
2808 | ||
2468f9c9 PB |
2809 | typedef enum |
2810 | { | |
2811 | DELETE_EXIDX_ENTRY, | |
2812 | INSERT_EXIDX_CANTUNWIND_AT_END | |
2813 | } | |
2814 | arm_unwind_edit_type; | |
2815 | ||
2816 | /* A (sorted) list of edits to apply to an unwind table. */ | |
2817 | typedef struct arm_unwind_table_edit | |
2818 | { | |
2819 | arm_unwind_edit_type type; | |
2820 | /* Note: we sometimes want to insert an unwind entry corresponding to a | |
2821 | section different from the one we're currently writing out, so record the | |
2822 | (text) section this edit relates to here. */ | |
2823 | asection *linked_section; | |
2824 | unsigned int index; | |
2825 | struct arm_unwind_table_edit *next; | |
2826 | } | |
2827 | arm_unwind_table_edit; | |
2828 | ||
8e3de13a | 2829 | typedef struct _arm_elf_section_data |
e489d0ae | 2830 | { |
2468f9c9 | 2831 | /* Information about mapping symbols. */ |
e489d0ae | 2832 | struct bfd_elf_section_data elf; |
8e3de13a | 2833 | unsigned int mapcount; |
c7b8f16e | 2834 | unsigned int mapsize; |
e489d0ae | 2835 | elf32_arm_section_map *map; |
2468f9c9 | 2836 | /* Information about CPU errata. */ |
c7b8f16e JB |
2837 | unsigned int erratumcount; |
2838 | elf32_vfp11_erratum_list *erratumlist; | |
a504d23a LA |
2839 | unsigned int stm32l4xx_erratumcount; |
2840 | elf32_stm32l4xx_erratum_list *stm32l4xx_erratumlist; | |
491d01d3 | 2841 | unsigned int additional_reloc_count; |
2468f9c9 PB |
2842 | /* Information about unwind tables. */ |
2843 | union | |
2844 | { | |
2845 | /* Unwind info attached to a text section. */ | |
2846 | struct | |
2847 | { | |
2848 | asection *arm_exidx_sec; | |
2849 | } text; | |
2850 | ||
2851 | /* Unwind info attached to an .ARM.exidx section. */ | |
2852 | struct | |
2853 | { | |
2854 | arm_unwind_table_edit *unwind_edit_list; | |
2855 | arm_unwind_table_edit *unwind_edit_tail; | |
2856 | } exidx; | |
2857 | } u; | |
8e3de13a NC |
2858 | } |
2859 | _arm_elf_section_data; | |
e489d0ae PB |
2860 | |
2861 | #define elf32_arm_section_data(sec) \ | |
8e3de13a | 2862 | ((_arm_elf_section_data *) elf_section_data (sec)) |
e489d0ae | 2863 | |
48229727 JB |
2864 | /* A fix which might be required for Cortex-A8 Thumb-2 branch/TLB erratum. |
2865 | These fixes are subject to a relaxation procedure (in elf32_arm_size_stubs), | |
2866 | so may be created multiple times: we use an array of these entries whilst | |
2867 | relaxing which we can refresh easily, then create stubs for each potentially | |
2868 | erratum-triggering instruction once we've settled on a solution. */ | |
2869 | ||
b38cadfb NC |
2870 | struct a8_erratum_fix |
2871 | { | |
48229727 JB |
2872 | bfd *input_bfd; |
2873 | asection *section; | |
2874 | bfd_vma offset; | |
8d9d9490 | 2875 | bfd_vma target_offset; |
48229727 JB |
2876 | unsigned long orig_insn; |
2877 | char *stub_name; | |
2878 | enum elf32_arm_stub_type stub_type; | |
35fc36a8 | 2879 | enum arm_st_branch_type branch_type; |
48229727 JB |
2880 | }; |
2881 | ||
2882 | /* A table of relocs applied to branches which might trigger Cortex-A8 | |
2883 | erratum. */ | |
2884 | ||
b38cadfb NC |
2885 | struct a8_erratum_reloc |
2886 | { | |
48229727 JB |
2887 | bfd_vma from; |
2888 | bfd_vma destination; | |
92750f34 DJ |
2889 | struct elf32_arm_link_hash_entry *hash; |
2890 | const char *sym_name; | |
48229727 | 2891 | unsigned int r_type; |
35fc36a8 | 2892 | enum arm_st_branch_type branch_type; |
48229727 JB |
2893 | bfd_boolean non_a8_stub; |
2894 | }; | |
2895 | ||
ba93b8ac DJ |
2896 | /* The size of the thread control block. */ |
2897 | #define TCB_SIZE 8 | |
2898 | ||
34e77a92 RS |
2899 | /* ARM-specific information about a PLT entry, over and above the usual |
2900 | gotplt_union. */ | |
b38cadfb NC |
2901 | struct arm_plt_info |
2902 | { | |
34e77a92 RS |
2903 | /* We reference count Thumb references to a PLT entry separately, |
2904 | so that we can emit the Thumb trampoline only if needed. */ | |
2905 | bfd_signed_vma thumb_refcount; | |
2906 | ||
2907 | /* Some references from Thumb code may be eliminated by BL->BLX | |
2908 | conversion, so record them separately. */ | |
2909 | bfd_signed_vma maybe_thumb_refcount; | |
2910 | ||
2911 | /* How many of the recorded PLT accesses were from non-call relocations. | |
2912 | This information is useful when deciding whether anything takes the | |
2913 | address of an STT_GNU_IFUNC PLT. A value of 0 means that all | |
2914 | non-call references to the function should resolve directly to the | |
2915 | real runtime target. */ | |
2916 | unsigned int noncall_refcount; | |
2917 | ||
2918 | /* Since PLT entries have variable size if the Thumb prologue is | |
2919 | used, we need to record the index into .got.plt instead of | |
2920 | recomputing it from the PLT offset. */ | |
2921 | bfd_signed_vma got_offset; | |
2922 | }; | |
2923 | ||
2924 | /* Information about an .iplt entry for a local STT_GNU_IFUNC symbol. */ | |
b38cadfb NC |
2925 | struct arm_local_iplt_info |
2926 | { | |
34e77a92 RS |
2927 | /* The information that is usually found in the generic ELF part of |
2928 | the hash table entry. */ | |
2929 | union gotplt_union root; | |
2930 | ||
2931 | /* The information that is usually found in the ARM-specific part of | |
2932 | the hash table entry. */ | |
2933 | struct arm_plt_info arm; | |
2934 | ||
2935 | /* A list of all potential dynamic relocations against this symbol. */ | |
2936 | struct elf_dyn_relocs *dyn_relocs; | |
2937 | }; | |
2938 | ||
0ffa91dd | 2939 | struct elf_arm_obj_tdata |
ba93b8ac DJ |
2940 | { |
2941 | struct elf_obj_tdata root; | |
2942 | ||
2943 | /* tls_type for each local got entry. */ | |
2944 | char *local_got_tls_type; | |
ee065d83 | 2945 | |
0855e32b NS |
2946 | /* GOTPLT entries for TLS descriptors. */ |
2947 | bfd_vma *local_tlsdesc_gotent; | |
2948 | ||
34e77a92 RS |
2949 | /* Information for local symbols that need entries in .iplt. */ |
2950 | struct arm_local_iplt_info **local_iplt; | |
2951 | ||
bf21ed78 MS |
2952 | /* Zero to warn when linking objects with incompatible enum sizes. */ |
2953 | int no_enum_size_warning; | |
a9dc9481 JM |
2954 | |
2955 | /* Zero to warn when linking objects with incompatible wchar_t sizes. */ | |
2956 | int no_wchar_size_warning; | |
ba93b8ac DJ |
2957 | }; |
2958 | ||
0ffa91dd NC |
2959 | #define elf_arm_tdata(bfd) \ |
2960 | ((struct elf_arm_obj_tdata *) (bfd)->tdata.any) | |
ba93b8ac | 2961 | |
0ffa91dd NC |
2962 | #define elf32_arm_local_got_tls_type(bfd) \ |
2963 | (elf_arm_tdata (bfd)->local_got_tls_type) | |
2964 | ||
0855e32b NS |
2965 | #define elf32_arm_local_tlsdesc_gotent(bfd) \ |
2966 | (elf_arm_tdata (bfd)->local_tlsdesc_gotent) | |
2967 | ||
34e77a92 RS |
2968 | #define elf32_arm_local_iplt(bfd) \ |
2969 | (elf_arm_tdata (bfd)->local_iplt) | |
2970 | ||
0ffa91dd NC |
2971 | #define is_arm_elf(bfd) \ |
2972 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
2973 | && elf_tdata (bfd) != NULL \ | |
4dfe6ac6 | 2974 | && elf_object_id (bfd) == ARM_ELF_DATA) |
ba93b8ac DJ |
2975 | |
2976 | static bfd_boolean | |
2977 | elf32_arm_mkobject (bfd *abfd) | |
2978 | { | |
0ffa91dd | 2979 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_arm_obj_tdata), |
4dfe6ac6 | 2980 | ARM_ELF_DATA); |
ba93b8ac DJ |
2981 | } |
2982 | ||
ba93b8ac DJ |
2983 | #define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent)) |
2984 | ||
ba96a88f | 2985 | /* Arm ELF linker hash entry. */ |
252b5132 | 2986 | struct elf32_arm_link_hash_entry |
b38cadfb NC |
2987 | { |
2988 | struct elf_link_hash_entry root; | |
252b5132 | 2989 | |
b38cadfb NC |
2990 | /* Track dynamic relocs copied for this symbol. */ |
2991 | struct elf_dyn_relocs *dyn_relocs; | |
b7693d02 | 2992 | |
b38cadfb NC |
2993 | /* ARM-specific PLT information. */ |
2994 | struct arm_plt_info plt; | |
ba93b8ac DJ |
2995 | |
2996 | #define GOT_UNKNOWN 0 | |
2997 | #define GOT_NORMAL 1 | |
2998 | #define GOT_TLS_GD 2 | |
2999 | #define GOT_TLS_IE 4 | |
0855e32b NS |
3000 | #define GOT_TLS_GDESC 8 |
3001 | #define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLS_GDESC)) | |
b38cadfb | 3002 | unsigned int tls_type : 8; |
34e77a92 | 3003 | |
b38cadfb NC |
3004 | /* True if the symbol's PLT entry is in .iplt rather than .plt. */ |
3005 | unsigned int is_iplt : 1; | |
34e77a92 | 3006 | |
b38cadfb | 3007 | unsigned int unused : 23; |
a4fd1a8e | 3008 | |
b38cadfb NC |
3009 | /* Offset of the GOTPLT entry reserved for the TLS descriptor, |
3010 | starting at the end of the jump table. */ | |
3011 | bfd_vma tlsdesc_got; | |
0855e32b | 3012 | |
b38cadfb NC |
3013 | /* The symbol marking the real symbol location for exported thumb |
3014 | symbols with Arm stubs. */ | |
3015 | struct elf_link_hash_entry *export_glue; | |
906e58ca | 3016 | |
b38cadfb | 3017 | /* A pointer to the most recently used stub hash entry against this |
8029a119 | 3018 | symbol. */ |
b38cadfb NC |
3019 | struct elf32_arm_stub_hash_entry *stub_cache; |
3020 | }; | |
252b5132 | 3021 | |
252b5132 | 3022 | /* Traverse an arm ELF linker hash table. */ |
252b5132 RH |
3023 | #define elf32_arm_link_hash_traverse(table, func, info) \ |
3024 | (elf_link_hash_traverse \ | |
3025 | (&(table)->root, \ | |
b7693d02 | 3026 | (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
252b5132 RH |
3027 | (info))) |
3028 | ||
3029 | /* Get the ARM elf linker hash table from a link_info structure. */ | |
3030 | #define elf32_arm_hash_table(info) \ | |
4dfe6ac6 NC |
3031 | (elf_hash_table_id ((struct elf_link_hash_table *) ((info)->hash)) \ |
3032 | == ARM_ELF_DATA ? ((struct elf32_arm_link_hash_table *) ((info)->hash)) : NULL) | |
252b5132 | 3033 | |
906e58ca NC |
3034 | #define arm_stub_hash_lookup(table, string, create, copy) \ |
3035 | ((struct elf32_arm_stub_hash_entry *) \ | |
3036 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3037 | ||
21d799b5 NC |
3038 | /* Array to keep track of which stub sections have been created, and |
3039 | information on stub grouping. */ | |
3040 | struct map_stub | |
3041 | { | |
3042 | /* This is the section to which stubs in the group will be | |
3043 | attached. */ | |
3044 | asection *link_sec; | |
3045 | /* The stub section. */ | |
3046 | asection *stub_sec; | |
3047 | }; | |
3048 | ||
0855e32b NS |
3049 | #define elf32_arm_compute_jump_table_size(htab) \ |
3050 | ((htab)->next_tls_desc_index * 4) | |
3051 | ||
9b485d32 | 3052 | /* ARM ELF linker hash table. */ |
252b5132 | 3053 | struct elf32_arm_link_hash_table |
906e58ca NC |
3054 | { |
3055 | /* The main hash table. */ | |
3056 | struct elf_link_hash_table root; | |
252b5132 | 3057 | |
906e58ca NC |
3058 | /* The size in bytes of the section containing the Thumb-to-ARM glue. */ |
3059 | bfd_size_type thumb_glue_size; | |
252b5132 | 3060 | |
906e58ca NC |
3061 | /* The size in bytes of the section containing the ARM-to-Thumb glue. */ |
3062 | bfd_size_type arm_glue_size; | |
252b5132 | 3063 | |
906e58ca NC |
3064 | /* The size in bytes of section containing the ARMv4 BX veneers. */ |
3065 | bfd_size_type bx_glue_size; | |
845b51d6 | 3066 | |
906e58ca NC |
3067 | /* Offsets of ARMv4 BX veneers. Bit1 set if present, and Bit0 set when |
3068 | veneer has been populated. */ | |
3069 | bfd_vma bx_glue_offset[15]; | |
845b51d6 | 3070 | |
906e58ca NC |
3071 | /* The size in bytes of the section containing glue for VFP11 erratum |
3072 | veneers. */ | |
3073 | bfd_size_type vfp11_erratum_glue_size; | |
c7b8f16e | 3074 | |
a504d23a LA |
3075 | /* The size in bytes of the section containing glue for STM32L4XX erratum |
3076 | veneers. */ | |
3077 | bfd_size_type stm32l4xx_erratum_glue_size; | |
3078 | ||
48229727 JB |
3079 | /* A table of fix locations for Cortex-A8 Thumb-2 branch/TLB erratum. This |
3080 | holds Cortex-A8 erratum fix locations between elf32_arm_size_stubs() and | |
3081 | elf32_arm_write_section(). */ | |
3082 | struct a8_erratum_fix *a8_erratum_fixes; | |
3083 | unsigned int num_a8_erratum_fixes; | |
3084 | ||
906e58ca NC |
3085 | /* An arbitrary input BFD chosen to hold the glue sections. */ |
3086 | bfd * bfd_of_glue_owner; | |
ba96a88f | 3087 | |
906e58ca NC |
3088 | /* Nonzero to output a BE8 image. */ |
3089 | int byteswap_code; | |
e489d0ae | 3090 | |
906e58ca NC |
3091 | /* Zero if R_ARM_TARGET1 means R_ARM_ABS32. |
3092 | Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */ | |
3093 | int target1_is_rel; | |
9c504268 | 3094 | |
906e58ca NC |
3095 | /* The relocation to use for R_ARM_TARGET2 relocations. */ |
3096 | int target2_reloc; | |
eb043451 | 3097 | |
906e58ca NC |
3098 | /* 0 = Ignore R_ARM_V4BX. |
3099 | 1 = Convert BX to MOV PC. | |
3100 | 2 = Generate v4 interworing stubs. */ | |
3101 | int fix_v4bx; | |
319850b4 | 3102 | |
48229727 JB |
3103 | /* Whether we should fix the Cortex-A8 Thumb-2 branch/TLB erratum. */ |
3104 | int fix_cortex_a8; | |
3105 | ||
2de70689 MGD |
3106 | /* Whether we should fix the ARM1176 BLX immediate issue. */ |
3107 | int fix_arm1176; | |
3108 | ||
906e58ca NC |
3109 | /* Nonzero if the ARM/Thumb BLX instructions are available for use. */ |
3110 | int use_blx; | |
33bfe774 | 3111 | |
906e58ca NC |
3112 | /* What sort of code sequences we should look for which may trigger the |
3113 | VFP11 denorm erratum. */ | |
3114 | bfd_arm_vfp11_fix vfp11_fix; | |
c7b8f16e | 3115 | |
906e58ca NC |
3116 | /* Global counter for the number of fixes we have emitted. */ |
3117 | int num_vfp11_fixes; | |
c7b8f16e | 3118 | |
a504d23a LA |
3119 | /* What sort of code sequences we should look for which may trigger the |
3120 | STM32L4XX erratum. */ | |
3121 | bfd_arm_stm32l4xx_fix stm32l4xx_fix; | |
3122 | ||
3123 | /* Global counter for the number of fixes we have emitted. */ | |
3124 | int num_stm32l4xx_fixes; | |
3125 | ||
906e58ca NC |
3126 | /* Nonzero to force PIC branch veneers. */ |
3127 | int pic_veneer; | |
27e55c4d | 3128 | |
906e58ca NC |
3129 | /* The number of bytes in the initial entry in the PLT. */ |
3130 | bfd_size_type plt_header_size; | |
e5a52504 | 3131 | |
906e58ca NC |
3132 | /* The number of bytes in the subsequent PLT etries. */ |
3133 | bfd_size_type plt_entry_size; | |
e5a52504 | 3134 | |
906e58ca NC |
3135 | /* True if the target system is VxWorks. */ |
3136 | int vxworks_p; | |
00a97672 | 3137 | |
906e58ca NC |
3138 | /* True if the target system is Symbian OS. */ |
3139 | int symbian_p; | |
e5a52504 | 3140 | |
b38cadfb NC |
3141 | /* True if the target system is Native Client. */ |
3142 | int nacl_p; | |
3143 | ||
906e58ca NC |
3144 | /* True if the target uses REL relocations. */ |
3145 | int use_rel; | |
4e7fd91e | 3146 | |
54ddd295 TP |
3147 | /* Nonzero if import library must be a secure gateway import library |
3148 | as per ARMv8-M Security Extensions. */ | |
3149 | int cmse_implib; | |
3150 | ||
0955507f TP |
3151 | /* The import library whose symbols' address must remain stable in |
3152 | the import library generated. */ | |
3153 | bfd *in_implib_bfd; | |
3154 | ||
0855e32b NS |
3155 | /* The index of the next unused R_ARM_TLS_DESC slot in .rel.plt. */ |
3156 | bfd_vma next_tls_desc_index; | |
3157 | ||
3158 | /* How many R_ARM_TLS_DESC relocations were generated so far. */ | |
3159 | bfd_vma num_tls_desc; | |
3160 | ||
906e58ca | 3161 | /* Short-cuts to get to dynamic linker sections. */ |
906e58ca NC |
3162 | asection *sdynbss; |
3163 | asection *srelbss; | |
5e681ec4 | 3164 | |
906e58ca NC |
3165 | /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */ |
3166 | asection *srelplt2; | |
00a97672 | 3167 | |
0855e32b NS |
3168 | /* The offset into splt of the PLT entry for the TLS descriptor |
3169 | resolver. Special values are 0, if not necessary (or not found | |
3170 | to be necessary yet), and -1 if needed but not determined | |
3171 | yet. */ | |
3172 | bfd_vma dt_tlsdesc_plt; | |
3173 | ||
3174 | /* The offset into sgot of the GOT entry used by the PLT entry | |
3175 | above. */ | |
b38cadfb | 3176 | bfd_vma dt_tlsdesc_got; |
0855e32b NS |
3177 | |
3178 | /* Offset in .plt section of tls_arm_trampoline. */ | |
3179 | bfd_vma tls_trampoline; | |
3180 | ||
906e58ca NC |
3181 | /* Data for R_ARM_TLS_LDM32 relocations. */ |
3182 | union | |
3183 | { | |
3184 | bfd_signed_vma refcount; | |
3185 | bfd_vma offset; | |
3186 | } tls_ldm_got; | |
b7693d02 | 3187 | |
87d72d41 AM |
3188 | /* Small local sym cache. */ |
3189 | struct sym_cache sym_cache; | |
906e58ca NC |
3190 | |
3191 | /* For convenience in allocate_dynrelocs. */ | |
3192 | bfd * obfd; | |
3193 | ||
0855e32b NS |
3194 | /* The amount of space used by the reserved portion of the sgotplt |
3195 | section, plus whatever space is used by the jump slots. */ | |
3196 | bfd_vma sgotplt_jump_table_size; | |
3197 | ||
906e58ca NC |
3198 | /* The stub hash table. */ |
3199 | struct bfd_hash_table stub_hash_table; | |
3200 | ||
3201 | /* Linker stub bfd. */ | |
3202 | bfd *stub_bfd; | |
3203 | ||
3204 | /* Linker call-backs. */ | |
6bde4c52 TP |
3205 | asection * (*add_stub_section) (const char *, asection *, asection *, |
3206 | unsigned int); | |
906e58ca NC |
3207 | void (*layout_sections_again) (void); |
3208 | ||
3209 | /* Array to keep track of which stub sections have been created, and | |
3210 | information on stub grouping. */ | |
21d799b5 | 3211 | struct map_stub *stub_group; |
906e58ca | 3212 | |
4ba2ef8f TP |
3213 | /* Input stub section holding secure gateway veneers. */ |
3214 | asection *cmse_stub_sec; | |
3215 | ||
0955507f TP |
3216 | /* Offset in cmse_stub_sec where new SG veneers (not in input import library) |
3217 | start to be allocated. */ | |
3218 | bfd_vma new_cmse_stub_offset; | |
3219 | ||
fe33d2fa | 3220 | /* Number of elements in stub_group. */ |
7292b3ac | 3221 | unsigned int top_id; |
fe33d2fa | 3222 | |
906e58ca NC |
3223 | /* Assorted information used by elf32_arm_size_stubs. */ |
3224 | unsigned int bfd_count; | |
7292b3ac | 3225 | unsigned int top_index; |
906e58ca NC |
3226 | asection **input_list; |
3227 | }; | |
252b5132 | 3228 | |
a504d23a LA |
3229 | static inline int |
3230 | ctz (unsigned int mask) | |
3231 | { | |
3232 | #if GCC_VERSION >= 3004 | |
3233 | return __builtin_ctz (mask); | |
3234 | #else | |
3235 | unsigned int i; | |
3236 | ||
3237 | for (i = 0; i < 8 * sizeof (mask); i++) | |
3238 | { | |
3239 | if (mask & 0x1) | |
3240 | break; | |
3241 | mask = (mask >> 1); | |
3242 | } | |
3243 | return i; | |
3244 | #endif | |
3245 | } | |
3246 | ||
3247 | static inline int | |
3248 | popcount (unsigned int mask) | |
3249 | { | |
3250 | #if GCC_VERSION >= 3004 | |
3251 | return __builtin_popcount (mask); | |
3252 | #else | |
3253 | unsigned int i, sum = 0; | |
3254 | ||
3255 | for (i = 0; i < 8 * sizeof (mask); i++) | |
3256 | { | |
3257 | if (mask & 0x1) | |
3258 | sum++; | |
3259 | mask = (mask >> 1); | |
3260 | } | |
3261 | return sum; | |
3262 | #endif | |
3263 | } | |
3264 | ||
780a67af NC |
3265 | /* Create an entry in an ARM ELF linker hash table. */ |
3266 | ||
3267 | static struct bfd_hash_entry * | |
57e8b36a | 3268 | elf32_arm_link_hash_newfunc (struct bfd_hash_entry * entry, |
99059e56 RM |
3269 | struct bfd_hash_table * table, |
3270 | const char * string) | |
780a67af NC |
3271 | { |
3272 | struct elf32_arm_link_hash_entry * ret = | |
3273 | (struct elf32_arm_link_hash_entry *) entry; | |
3274 | ||
3275 | /* Allocate the structure if it has not already been allocated by a | |
3276 | subclass. */ | |
906e58ca | 3277 | if (ret == NULL) |
21d799b5 | 3278 | ret = (struct elf32_arm_link_hash_entry *) |
99059e56 | 3279 | bfd_hash_allocate (table, sizeof (struct elf32_arm_link_hash_entry)); |
57e8b36a | 3280 | if (ret == NULL) |
780a67af NC |
3281 | return (struct bfd_hash_entry *) ret; |
3282 | ||
3283 | /* Call the allocation method of the superclass. */ | |
3284 | ret = ((struct elf32_arm_link_hash_entry *) | |
3285 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
3286 | table, string)); | |
57e8b36a | 3287 | if (ret != NULL) |
b7693d02 | 3288 | { |
0bdcacaf | 3289 | ret->dyn_relocs = NULL; |
ba93b8ac | 3290 | ret->tls_type = GOT_UNKNOWN; |
0855e32b | 3291 | ret->tlsdesc_got = (bfd_vma) -1; |
34e77a92 RS |
3292 | ret->plt.thumb_refcount = 0; |
3293 | ret->plt.maybe_thumb_refcount = 0; | |
3294 | ret->plt.noncall_refcount = 0; | |
3295 | ret->plt.got_offset = -1; | |
3296 | ret->is_iplt = FALSE; | |
a4fd1a8e | 3297 | ret->export_glue = NULL; |
906e58ca NC |
3298 | |
3299 | ret->stub_cache = NULL; | |
b7693d02 | 3300 | } |
780a67af NC |
3301 | |
3302 | return (struct bfd_hash_entry *) ret; | |
3303 | } | |
3304 | ||
34e77a92 RS |
3305 | /* Ensure that we have allocated bookkeeping structures for ABFD's local |
3306 | symbols. */ | |
3307 | ||
3308 | static bfd_boolean | |
3309 | elf32_arm_allocate_local_sym_info (bfd *abfd) | |
3310 | { | |
3311 | if (elf_local_got_refcounts (abfd) == NULL) | |
3312 | { | |
3313 | bfd_size_type num_syms; | |
3314 | bfd_size_type size; | |
3315 | char *data; | |
3316 | ||
3317 | num_syms = elf_tdata (abfd)->symtab_hdr.sh_info; | |
3318 | size = num_syms * (sizeof (bfd_signed_vma) | |
3319 | + sizeof (struct arm_local_iplt_info *) | |
3320 | + sizeof (bfd_vma) | |
3321 | + sizeof (char)); | |
3322 | data = bfd_zalloc (abfd, size); | |
3323 | if (data == NULL) | |
3324 | return FALSE; | |
3325 | ||
3326 | elf_local_got_refcounts (abfd) = (bfd_signed_vma *) data; | |
3327 | data += num_syms * sizeof (bfd_signed_vma); | |
3328 | ||
3329 | elf32_arm_local_iplt (abfd) = (struct arm_local_iplt_info **) data; | |
3330 | data += num_syms * sizeof (struct arm_local_iplt_info *); | |
3331 | ||
3332 | elf32_arm_local_tlsdesc_gotent (abfd) = (bfd_vma *) data; | |
3333 | data += num_syms * sizeof (bfd_vma); | |
3334 | ||
3335 | elf32_arm_local_got_tls_type (abfd) = data; | |
3336 | } | |
3337 | return TRUE; | |
3338 | } | |
3339 | ||
3340 | /* Return the .iplt information for local symbol R_SYMNDX, which belongs | |
3341 | to input bfd ABFD. Create the information if it doesn't already exist. | |
3342 | Return null if an allocation fails. */ | |
3343 | ||
3344 | static struct arm_local_iplt_info * | |
3345 | elf32_arm_create_local_iplt (bfd *abfd, unsigned long r_symndx) | |
3346 | { | |
3347 | struct arm_local_iplt_info **ptr; | |
3348 | ||
3349 | if (!elf32_arm_allocate_local_sym_info (abfd)) | |
3350 | return NULL; | |
3351 | ||
3352 | BFD_ASSERT (r_symndx < elf_tdata (abfd)->symtab_hdr.sh_info); | |
3353 | ptr = &elf32_arm_local_iplt (abfd)[r_symndx]; | |
3354 | if (*ptr == NULL) | |
3355 | *ptr = bfd_zalloc (abfd, sizeof (**ptr)); | |
3356 | return *ptr; | |
3357 | } | |
3358 | ||
3359 | /* Try to obtain PLT information for the symbol with index R_SYMNDX | |
3360 | in ABFD's symbol table. If the symbol is global, H points to its | |
3361 | hash table entry, otherwise H is null. | |
3362 | ||
3363 | Return true if the symbol does have PLT information. When returning | |
3364 | true, point *ROOT_PLT at the target-independent reference count/offset | |
3365 | union and *ARM_PLT at the ARM-specific information. */ | |
3366 | ||
3367 | static bfd_boolean | |
4ba2ef8f TP |
3368 | elf32_arm_get_plt_info (bfd *abfd, struct elf32_arm_link_hash_table *globals, |
3369 | struct elf32_arm_link_hash_entry *h, | |
34e77a92 RS |
3370 | unsigned long r_symndx, union gotplt_union **root_plt, |
3371 | struct arm_plt_info **arm_plt) | |
3372 | { | |
3373 | struct arm_local_iplt_info *local_iplt; | |
3374 | ||
4ba2ef8f TP |
3375 | if (globals->root.splt == NULL && globals->root.iplt == NULL) |
3376 | return FALSE; | |
3377 | ||
34e77a92 RS |
3378 | if (h != NULL) |
3379 | { | |
3380 | *root_plt = &h->root.plt; | |
3381 | *arm_plt = &h->plt; | |
3382 | return TRUE; | |
3383 | } | |
3384 | ||
3385 | if (elf32_arm_local_iplt (abfd) == NULL) | |
3386 | return FALSE; | |
3387 | ||
3388 | local_iplt = elf32_arm_local_iplt (abfd)[r_symndx]; | |
3389 | if (local_iplt == NULL) | |
3390 | return FALSE; | |
3391 | ||
3392 | *root_plt = &local_iplt->root; | |
3393 | *arm_plt = &local_iplt->arm; | |
3394 | return TRUE; | |
3395 | } | |
3396 | ||
3397 | /* Return true if the PLT described by ARM_PLT requires a Thumb stub | |
3398 | before it. */ | |
3399 | ||
3400 | static bfd_boolean | |
3401 | elf32_arm_plt_needs_thumb_stub_p (struct bfd_link_info *info, | |
3402 | struct arm_plt_info *arm_plt) | |
3403 | { | |
3404 | struct elf32_arm_link_hash_table *htab; | |
3405 | ||
3406 | htab = elf32_arm_hash_table (info); | |
3407 | return (arm_plt->thumb_refcount != 0 | |
3408 | || (!htab->use_blx && arm_plt->maybe_thumb_refcount != 0)); | |
3409 | } | |
3410 | ||
3411 | /* Return a pointer to the head of the dynamic reloc list that should | |
3412 | be used for local symbol ISYM, which is symbol number R_SYMNDX in | |
3413 | ABFD's symbol table. Return null if an error occurs. */ | |
3414 | ||
3415 | static struct elf_dyn_relocs ** | |
3416 | elf32_arm_get_local_dynreloc_list (bfd *abfd, unsigned long r_symndx, | |
3417 | Elf_Internal_Sym *isym) | |
3418 | { | |
3419 | if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
3420 | { | |
3421 | struct arm_local_iplt_info *local_iplt; | |
3422 | ||
3423 | local_iplt = elf32_arm_create_local_iplt (abfd, r_symndx); | |
3424 | if (local_iplt == NULL) | |
3425 | return NULL; | |
3426 | return &local_iplt->dyn_relocs; | |
3427 | } | |
3428 | else | |
3429 | { | |
3430 | /* Track dynamic relocs needed for local syms too. | |
3431 | We really need local syms available to do this | |
3432 | easily. Oh well. */ | |
3433 | asection *s; | |
3434 | void *vpp; | |
3435 | ||
3436 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
3437 | if (s == NULL) | |
3438 | abort (); | |
3439 | ||
3440 | vpp = &elf_section_data (s)->local_dynrel; | |
3441 | return (struct elf_dyn_relocs **) vpp; | |
3442 | } | |
3443 | } | |
3444 | ||
906e58ca NC |
3445 | /* Initialize an entry in the stub hash table. */ |
3446 | ||
3447 | static struct bfd_hash_entry * | |
3448 | stub_hash_newfunc (struct bfd_hash_entry *entry, | |
3449 | struct bfd_hash_table *table, | |
3450 | const char *string) | |
3451 | { | |
3452 | /* Allocate the structure if it has not already been allocated by a | |
3453 | subclass. */ | |
3454 | if (entry == NULL) | |
3455 | { | |
21d799b5 | 3456 | entry = (struct bfd_hash_entry *) |
99059e56 | 3457 | bfd_hash_allocate (table, sizeof (struct elf32_arm_stub_hash_entry)); |
906e58ca NC |
3458 | if (entry == NULL) |
3459 | return entry; | |
3460 | } | |
3461 | ||
3462 | /* Call the allocation method of the superclass. */ | |
3463 | entry = bfd_hash_newfunc (entry, table, string); | |
3464 | if (entry != NULL) | |
3465 | { | |
3466 | struct elf32_arm_stub_hash_entry *eh; | |
3467 | ||
3468 | /* Initialize the local fields. */ | |
3469 | eh = (struct elf32_arm_stub_hash_entry *) entry; | |
3470 | eh->stub_sec = NULL; | |
0955507f | 3471 | eh->stub_offset = (bfd_vma) -1; |
8d9d9490 | 3472 | eh->source_value = 0; |
906e58ca NC |
3473 | eh->target_value = 0; |
3474 | eh->target_section = NULL; | |
cedfb179 | 3475 | eh->orig_insn = 0; |
906e58ca | 3476 | eh->stub_type = arm_stub_none; |
461a49ca DJ |
3477 | eh->stub_size = 0; |
3478 | eh->stub_template = NULL; | |
0955507f | 3479 | eh->stub_template_size = -1; |
906e58ca NC |
3480 | eh->h = NULL; |
3481 | eh->id_sec = NULL; | |
d8d2f433 | 3482 | eh->output_name = NULL; |
906e58ca NC |
3483 | } |
3484 | ||
3485 | return entry; | |
3486 | } | |
3487 | ||
00a97672 | 3488 | /* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up |
5e681ec4 PB |
3489 | shortcuts to them in our hash table. */ |
3490 | ||
3491 | static bfd_boolean | |
57e8b36a | 3492 | create_got_section (bfd *dynobj, struct bfd_link_info *info) |
5e681ec4 PB |
3493 | { |
3494 | struct elf32_arm_link_hash_table *htab; | |
3495 | ||
e5a52504 | 3496 | htab = elf32_arm_hash_table (info); |
4dfe6ac6 NC |
3497 | if (htab == NULL) |
3498 | return FALSE; | |
3499 | ||
e5a52504 MM |
3500 | /* BPABI objects never have a GOT, or associated sections. */ |
3501 | if (htab->symbian_p) | |
3502 | return TRUE; | |
3503 | ||
5e681ec4 PB |
3504 | if (! _bfd_elf_create_got_section (dynobj, info)) |
3505 | return FALSE; | |
3506 | ||
5e681ec4 PB |
3507 | return TRUE; |
3508 | } | |
3509 | ||
34e77a92 RS |
3510 | /* Create the .iplt, .rel(a).iplt and .igot.plt sections. */ |
3511 | ||
3512 | static bfd_boolean | |
3513 | create_ifunc_sections (struct bfd_link_info *info) | |
3514 | { | |
3515 | struct elf32_arm_link_hash_table *htab; | |
3516 | const struct elf_backend_data *bed; | |
3517 | bfd *dynobj; | |
3518 | asection *s; | |
3519 | flagword flags; | |
b38cadfb | 3520 | |
34e77a92 RS |
3521 | htab = elf32_arm_hash_table (info); |
3522 | dynobj = htab->root.dynobj; | |
3523 | bed = get_elf_backend_data (dynobj); | |
3524 | flags = bed->dynamic_sec_flags; | |
3525 | ||
3526 | if (htab->root.iplt == NULL) | |
3527 | { | |
3d4d4302 AM |
3528 | s = bfd_make_section_anyway_with_flags (dynobj, ".iplt", |
3529 | flags | SEC_READONLY | SEC_CODE); | |
34e77a92 | 3530 | if (s == NULL |
a0f49396 | 3531 | || !bfd_set_section_alignment (dynobj, s, bed->plt_alignment)) |
34e77a92 RS |
3532 | return FALSE; |
3533 | htab->root.iplt = s; | |
3534 | } | |
3535 | ||
3536 | if (htab->root.irelplt == NULL) | |
3537 | { | |
3d4d4302 AM |
3538 | s = bfd_make_section_anyway_with_flags (dynobj, |
3539 | RELOC_SECTION (htab, ".iplt"), | |
3540 | flags | SEC_READONLY); | |
34e77a92 | 3541 | if (s == NULL |
a0f49396 | 3542 | || !bfd_set_section_alignment (dynobj, s, bed->s->log_file_align)) |
34e77a92 RS |
3543 | return FALSE; |
3544 | htab->root.irelplt = s; | |
3545 | } | |
3546 | ||
3547 | if (htab->root.igotplt == NULL) | |
3548 | { | |
3d4d4302 | 3549 | s = bfd_make_section_anyway_with_flags (dynobj, ".igot.plt", flags); |
34e77a92 RS |
3550 | if (s == NULL |
3551 | || !bfd_set_section_alignment (dynobj, s, bed->s->log_file_align)) | |
3552 | return FALSE; | |
3553 | htab->root.igotplt = s; | |
3554 | } | |
3555 | return TRUE; | |
3556 | } | |
3557 | ||
eed94f8f NC |
3558 | /* Determine if we're dealing with a Thumb only architecture. */ |
3559 | ||
3560 | static bfd_boolean | |
3561 | using_thumb_only (struct elf32_arm_link_hash_table *globals) | |
3562 | { | |
2fd158eb TP |
3563 | int arch; |
3564 | int profile = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, | |
3565 | Tag_CPU_arch_profile); | |
eed94f8f | 3566 | |
2fd158eb TP |
3567 | if (profile) |
3568 | return profile == 'M'; | |
eed94f8f | 3569 | |
2fd158eb | 3570 | arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, Tag_CPU_arch); |
eed94f8f | 3571 | |
60a019a0 TP |
3572 | /* Force return logic to be reviewed for each new architecture. */ |
3573 | BFD_ASSERT (arch <= TAG_CPU_ARCH_V8 | |
3574 | || arch == TAG_CPU_ARCH_V8M_BASE | |
3575 | || arch == TAG_CPU_ARCH_V8M_MAIN); | |
3576 | ||
2fd158eb TP |
3577 | if (arch == TAG_CPU_ARCH_V6_M |
3578 | || arch == TAG_CPU_ARCH_V6S_M | |
3579 | || arch == TAG_CPU_ARCH_V7E_M | |
3580 | || arch == TAG_CPU_ARCH_V8M_BASE | |
3581 | || arch == TAG_CPU_ARCH_V8M_MAIN) | |
3582 | return TRUE; | |
eed94f8f | 3583 | |
2fd158eb | 3584 | return FALSE; |
eed94f8f NC |
3585 | } |
3586 | ||
3587 | /* Determine if we're dealing with a Thumb-2 object. */ | |
3588 | ||
3589 | static bfd_boolean | |
3590 | using_thumb2 (struct elf32_arm_link_hash_table *globals) | |
3591 | { | |
60a019a0 TP |
3592 | int arch; |
3593 | int thumb_isa = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, | |
3594 | Tag_THUMB_ISA_use); | |
3595 | ||
3596 | if (thumb_isa) | |
3597 | return thumb_isa == 2; | |
3598 | ||
3599 | arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, Tag_CPU_arch); | |
3600 | ||
3601 | /* Force return logic to be reviewed for each new architecture. */ | |
3602 | BFD_ASSERT (arch <= TAG_CPU_ARCH_V8 | |
3603 | || arch == TAG_CPU_ARCH_V8M_BASE | |
3604 | || arch == TAG_CPU_ARCH_V8M_MAIN); | |
3605 | ||
3606 | return (arch == TAG_CPU_ARCH_V6T2 | |
3607 | || arch == TAG_CPU_ARCH_V7 | |
3608 | || arch == TAG_CPU_ARCH_V7E_M | |
3609 | || arch == TAG_CPU_ARCH_V8 | |
3610 | || arch == TAG_CPU_ARCH_V8M_MAIN); | |
eed94f8f NC |
3611 | } |
3612 | ||
5e866f5a TP |
3613 | /* Determine whether Thumb-2 BL instruction is available. */ |
3614 | ||
3615 | static bfd_boolean | |
3616 | using_thumb2_bl (struct elf32_arm_link_hash_table *globals) | |
3617 | { | |
3618 | int arch = | |
3619 | bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, Tag_CPU_arch); | |
3620 | ||
3621 | /* Force return logic to be reviewed for each new architecture. */ | |
3622 | BFD_ASSERT (arch <= TAG_CPU_ARCH_V8 | |
3623 | || arch == TAG_CPU_ARCH_V8M_BASE | |
3624 | || arch == TAG_CPU_ARCH_V8M_MAIN); | |
3625 | ||
3626 | /* Architecture was introduced after ARMv6T2 (eg. ARMv6-M). */ | |
3627 | return (arch == TAG_CPU_ARCH_V6T2 | |
3628 | || arch >= TAG_CPU_ARCH_V7); | |
3629 | } | |
3630 | ||
00a97672 RS |
3631 | /* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and |
3632 | .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our | |
5e681ec4 PB |
3633 | hash table. */ |
3634 | ||
3635 | static bfd_boolean | |
57e8b36a | 3636 | elf32_arm_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5e681ec4 PB |
3637 | { |
3638 | struct elf32_arm_link_hash_table *htab; | |
3639 | ||
3640 | htab = elf32_arm_hash_table (info); | |
4dfe6ac6 NC |
3641 | if (htab == NULL) |
3642 | return FALSE; | |
3643 | ||
362d30a1 | 3644 | if (!htab->root.sgot && !create_got_section (dynobj, info)) |
5e681ec4 PB |
3645 | return FALSE; |
3646 | ||
3647 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
3648 | return FALSE; | |
3649 | ||
3d4d4302 | 3650 | htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss"); |
0e1862bb | 3651 | if (!bfd_link_pic (info)) |
3d4d4302 AM |
3652 | htab->srelbss = bfd_get_linker_section (dynobj, |
3653 | RELOC_SECTION (htab, ".bss")); | |
00a97672 RS |
3654 | |
3655 | if (htab->vxworks_p) | |
3656 | { | |
3657 | if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2)) | |
3658 | return FALSE; | |
3659 | ||
0e1862bb | 3660 | if (bfd_link_pic (info)) |
00a97672 RS |
3661 | { |
3662 | htab->plt_header_size = 0; | |
3663 | htab->plt_entry_size | |
3664 | = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry); | |
3665 | } | |
3666 | else | |
3667 | { | |
3668 | htab->plt_header_size | |
3669 | = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry); | |
3670 | htab->plt_entry_size | |
3671 | = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry); | |
3672 | } | |
aebf9be7 NC |
3673 | |
3674 | if (elf_elfheader (dynobj)) | |
3675 | elf_elfheader (dynobj)->e_ident[EI_CLASS] = ELFCLASS32; | |
00a97672 | 3676 | } |
eed94f8f NC |
3677 | else |
3678 | { | |
3679 | /* PR ld/16017 | |
3680 | Test for thumb only architectures. Note - we cannot just call | |
3681 | using_thumb_only() as the attributes in the output bfd have not been | |
3682 | initialised at this point, so instead we use the input bfd. */ | |
3683 | bfd * saved_obfd = htab->obfd; | |
3684 | ||
3685 | htab->obfd = dynobj; | |
3686 | if (using_thumb_only (htab)) | |
3687 | { | |
3688 | htab->plt_header_size = 4 * ARRAY_SIZE (elf32_thumb2_plt0_entry); | |
3689 | htab->plt_entry_size = 4 * ARRAY_SIZE (elf32_thumb2_plt_entry); | |
3690 | } | |
3691 | htab->obfd = saved_obfd; | |
3692 | } | |
5e681ec4 | 3693 | |
362d30a1 RS |
3694 | if (!htab->root.splt |
3695 | || !htab->root.srelplt | |
e5a52504 | 3696 | || !htab->sdynbss |
0e1862bb | 3697 | || (!bfd_link_pic (info) && !htab->srelbss)) |
5e681ec4 PB |
3698 | abort (); |
3699 | ||
3700 | return TRUE; | |
3701 | } | |
3702 | ||
906e58ca NC |
3703 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
3704 | ||
3705 | static void | |
3706 | elf32_arm_copy_indirect_symbol (struct bfd_link_info *info, | |
3707 | struct elf_link_hash_entry *dir, | |
3708 | struct elf_link_hash_entry *ind) | |
3709 | { | |
3710 | struct elf32_arm_link_hash_entry *edir, *eind; | |
3711 | ||
3712 | edir = (struct elf32_arm_link_hash_entry *) dir; | |
3713 | eind = (struct elf32_arm_link_hash_entry *) ind; | |
3714 | ||
0bdcacaf | 3715 | if (eind->dyn_relocs != NULL) |
906e58ca | 3716 | { |
0bdcacaf | 3717 | if (edir->dyn_relocs != NULL) |
906e58ca | 3718 | { |
0bdcacaf RS |
3719 | struct elf_dyn_relocs **pp; |
3720 | struct elf_dyn_relocs *p; | |
906e58ca NC |
3721 | |
3722 | /* Add reloc counts against the indirect sym to the direct sym | |
3723 | list. Merge any entries against the same section. */ | |
0bdcacaf | 3724 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) |
906e58ca | 3725 | { |
0bdcacaf | 3726 | struct elf_dyn_relocs *q; |
906e58ca | 3727 | |
0bdcacaf RS |
3728 | for (q = edir->dyn_relocs; q != NULL; q = q->next) |
3729 | if (q->sec == p->sec) | |
906e58ca NC |
3730 | { |
3731 | q->pc_count += p->pc_count; | |
3732 | q->count += p->count; | |
3733 | *pp = p->next; | |
3734 | break; | |
3735 | } | |
3736 | if (q == NULL) | |
3737 | pp = &p->next; | |
3738 | } | |
0bdcacaf | 3739 | *pp = edir->dyn_relocs; |
906e58ca NC |
3740 | } |
3741 | ||
0bdcacaf RS |
3742 | edir->dyn_relocs = eind->dyn_relocs; |
3743 | eind->dyn_relocs = NULL; | |
906e58ca NC |
3744 | } |
3745 | ||
3746 | if (ind->root.type == bfd_link_hash_indirect) | |
3747 | { | |
3748 | /* Copy over PLT info. */ | |
34e77a92 RS |
3749 | edir->plt.thumb_refcount += eind->plt.thumb_refcount; |
3750 | eind->plt.thumb_refcount = 0; | |
3751 | edir->plt.maybe_thumb_refcount += eind->plt.maybe_thumb_refcount; | |
3752 | eind->plt.maybe_thumb_refcount = 0; | |
3753 | edir->plt.noncall_refcount += eind->plt.noncall_refcount; | |
3754 | eind->plt.noncall_refcount = 0; | |
3755 | ||
3756 | /* We should only allocate a function to .iplt once the final | |
3757 | symbol information is known. */ | |
3758 | BFD_ASSERT (!eind->is_iplt); | |
906e58ca NC |
3759 | |
3760 | if (dir->got.refcount <= 0) | |
3761 | { | |
3762 | edir->tls_type = eind->tls_type; | |
3763 | eind->tls_type = GOT_UNKNOWN; | |
3764 | } | |
3765 | } | |
3766 | ||
3767 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
3768 | } | |
3769 | ||
68faa637 AM |
3770 | /* Destroy an ARM elf linker hash table. */ |
3771 | ||
3772 | static void | |
d495ab0d | 3773 | elf32_arm_link_hash_table_free (bfd *obfd) |
68faa637 AM |
3774 | { |
3775 | struct elf32_arm_link_hash_table *ret | |
d495ab0d | 3776 | = (struct elf32_arm_link_hash_table *) obfd->link.hash; |
68faa637 AM |
3777 | |
3778 | bfd_hash_table_free (&ret->stub_hash_table); | |
d495ab0d | 3779 | _bfd_elf_link_hash_table_free (obfd); |
68faa637 AM |
3780 | } |
3781 | ||
906e58ca NC |
3782 | /* Create an ARM elf linker hash table. */ |
3783 | ||
3784 | static struct bfd_link_hash_table * | |
3785 | elf32_arm_link_hash_table_create (bfd *abfd) | |
3786 | { | |
3787 | struct elf32_arm_link_hash_table *ret; | |
3788 | bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table); | |
3789 | ||
7bf52ea2 | 3790 | ret = (struct elf32_arm_link_hash_table *) bfd_zmalloc (amt); |
906e58ca NC |
3791 | if (ret == NULL) |
3792 | return NULL; | |
3793 | ||
3794 | if (!_bfd_elf_link_hash_table_init (& ret->root, abfd, | |
3795 | elf32_arm_link_hash_newfunc, | |
4dfe6ac6 NC |
3796 | sizeof (struct elf32_arm_link_hash_entry), |
3797 | ARM_ELF_DATA)) | |
906e58ca NC |
3798 | { |
3799 | free (ret); | |
3800 | return NULL; | |
3801 | } | |
3802 | ||
906e58ca | 3803 | ret->vfp11_fix = BFD_ARM_VFP11_FIX_NONE; |
a504d23a | 3804 | ret->stm32l4xx_fix = BFD_ARM_STM32L4XX_FIX_NONE; |
906e58ca NC |
3805 | #ifdef FOUR_WORD_PLT |
3806 | ret->plt_header_size = 16; | |
3807 | ret->plt_entry_size = 16; | |
3808 | #else | |
3809 | ret->plt_header_size = 20; | |
1db37fe6 | 3810 | ret->plt_entry_size = elf32_arm_use_long_plt_entry ? 16 : 12; |
906e58ca | 3811 | #endif |
906e58ca | 3812 | ret->use_rel = 1; |
906e58ca | 3813 | ret->obfd = abfd; |
906e58ca NC |
3814 | |
3815 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc, | |
3816 | sizeof (struct elf32_arm_stub_hash_entry))) | |
3817 | { | |
d495ab0d | 3818 | _bfd_elf_link_hash_table_free (abfd); |
906e58ca NC |
3819 | return NULL; |
3820 | } | |
d495ab0d | 3821 | ret->root.root.hash_table_free = elf32_arm_link_hash_table_free; |
906e58ca NC |
3822 | |
3823 | return &ret->root.root; | |
3824 | } | |
3825 | ||
cd1dac3d DG |
3826 | /* Determine what kind of NOPs are available. */ |
3827 | ||
3828 | static bfd_boolean | |
3829 | arch_has_arm_nop (struct elf32_arm_link_hash_table *globals) | |
3830 | { | |
3831 | const int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, | |
3832 | Tag_CPU_arch); | |
cd1dac3d | 3833 | |
60a019a0 TP |
3834 | /* Force return logic to be reviewed for each new architecture. */ |
3835 | BFD_ASSERT (arch <= TAG_CPU_ARCH_V8 | |
3836 | || arch == TAG_CPU_ARCH_V8M_BASE | |
3837 | || arch == TAG_CPU_ARCH_V8M_MAIN); | |
3838 | ||
3839 | return (arch == TAG_CPU_ARCH_V6T2 | |
3840 | || arch == TAG_CPU_ARCH_V6K | |
3841 | || arch == TAG_CPU_ARCH_V7 | |
3842 | || arch == TAG_CPU_ARCH_V8); | |
cd1dac3d DG |
3843 | } |
3844 | ||
f4ac8484 DJ |
3845 | static bfd_boolean |
3846 | arm_stub_is_thumb (enum elf32_arm_stub_type stub_type) | |
3847 | { | |
3848 | switch (stub_type) | |
3849 | { | |
fea2b4d6 | 3850 | case arm_stub_long_branch_thumb_only: |
80c135e5 | 3851 | case arm_stub_long_branch_thumb2_only: |
d5a67c02 | 3852 | case arm_stub_long_branch_thumb2_only_pure: |
fea2b4d6 CL |
3853 | case arm_stub_long_branch_v4t_thumb_arm: |
3854 | case arm_stub_short_branch_v4t_thumb_arm: | |
ebe24dd4 | 3855 | case arm_stub_long_branch_v4t_thumb_arm_pic: |
12352d3f | 3856 | case arm_stub_long_branch_v4t_thumb_tls_pic: |
ebe24dd4 | 3857 | case arm_stub_long_branch_thumb_only_pic: |
4ba2ef8f | 3858 | case arm_stub_cmse_branch_thumb_only: |
f4ac8484 DJ |
3859 | return TRUE; |
3860 | case arm_stub_none: | |
3861 | BFD_FAIL (); | |
3862 | return FALSE; | |
3863 | break; | |
3864 | default: | |
3865 | return FALSE; | |
3866 | } | |
3867 | } | |
3868 | ||
906e58ca NC |
3869 | /* Determine the type of stub needed, if any, for a call. */ |
3870 | ||
3871 | static enum elf32_arm_stub_type | |
3872 | arm_type_of_stub (struct bfd_link_info *info, | |
3873 | asection *input_sec, | |
3874 | const Elf_Internal_Rela *rel, | |
34e77a92 | 3875 | unsigned char st_type, |
35fc36a8 | 3876 | enum arm_st_branch_type *actual_branch_type, |
906e58ca | 3877 | struct elf32_arm_link_hash_entry *hash, |
c820be07 NC |
3878 | bfd_vma destination, |
3879 | asection *sym_sec, | |
3880 | bfd *input_bfd, | |
3881 | const char *name) | |
906e58ca NC |
3882 | { |
3883 | bfd_vma location; | |
3884 | bfd_signed_vma branch_offset; | |
3885 | unsigned int r_type; | |
3886 | struct elf32_arm_link_hash_table * globals; | |
5e866f5a | 3887 | bfd_boolean thumb2, thumb2_bl, thumb_only; |
906e58ca | 3888 | enum elf32_arm_stub_type stub_type = arm_stub_none; |
5fa9e92f | 3889 | int use_plt = 0; |
35fc36a8 | 3890 | enum arm_st_branch_type branch_type = *actual_branch_type; |
34e77a92 RS |
3891 | union gotplt_union *root_plt; |
3892 | struct arm_plt_info *arm_plt; | |
d5a67c02 AV |
3893 | int arch; |
3894 | int thumb2_movw; | |
906e58ca | 3895 | |
35fc36a8 | 3896 | if (branch_type == ST_BRANCH_LONG) |
da5938a2 NC |
3897 | return stub_type; |
3898 | ||
906e58ca | 3899 | globals = elf32_arm_hash_table (info); |
4dfe6ac6 NC |
3900 | if (globals == NULL) |
3901 | return stub_type; | |
906e58ca NC |
3902 | |
3903 | thumb_only = using_thumb_only (globals); | |
906e58ca | 3904 | thumb2 = using_thumb2 (globals); |
5e866f5a | 3905 | thumb2_bl = using_thumb2_bl (globals); |
906e58ca | 3906 | |
d5a67c02 AV |
3907 | arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, Tag_CPU_arch); |
3908 | ||
3909 | /* True for architectures that implement the thumb2 movw instruction. */ | |
3910 | thumb2_movw = thumb2 || (arch == TAG_CPU_ARCH_V8M_BASE); | |
3911 | ||
906e58ca NC |
3912 | /* Determine where the call point is. */ |
3913 | location = (input_sec->output_offset | |
3914 | + input_sec->output_section->vma | |
3915 | + rel->r_offset); | |
3916 | ||
906e58ca NC |
3917 | r_type = ELF32_R_TYPE (rel->r_info); |
3918 | ||
39f21624 NC |
3919 | /* ST_BRANCH_TO_ARM is nonsense to thumb-only targets when we |
3920 | are considering a function call relocation. */ | |
c5423981 TG |
3921 | if (thumb_only && (r_type == R_ARM_THM_CALL || r_type == R_ARM_THM_JUMP24 |
3922 | || r_type == R_ARM_THM_JUMP19) | |
39f21624 NC |
3923 | && branch_type == ST_BRANCH_TO_ARM) |
3924 | branch_type = ST_BRANCH_TO_THUMB; | |
3925 | ||
34e77a92 RS |
3926 | /* For TLS call relocs, it is the caller's responsibility to provide |
3927 | the address of the appropriate trampoline. */ | |
3928 | if (r_type != R_ARM_TLS_CALL | |
3929 | && r_type != R_ARM_THM_TLS_CALL | |
4ba2ef8f TP |
3930 | && elf32_arm_get_plt_info (input_bfd, globals, hash, |
3931 | ELF32_R_SYM (rel->r_info), &root_plt, | |
3932 | &arm_plt) | |
34e77a92 | 3933 | && root_plt->offset != (bfd_vma) -1) |
5fa9e92f | 3934 | { |
34e77a92 | 3935 | asection *splt; |
fe33d2fa | 3936 | |
34e77a92 RS |
3937 | if (hash == NULL || hash->is_iplt) |
3938 | splt = globals->root.iplt; | |
3939 | else | |
3940 | splt = globals->root.splt; | |
3941 | if (splt != NULL) | |
b38cadfb | 3942 | { |
34e77a92 RS |
3943 | use_plt = 1; |
3944 | ||
3945 | /* Note when dealing with PLT entries: the main PLT stub is in | |
3946 | ARM mode, so if the branch is in Thumb mode, another | |
3947 | Thumb->ARM stub will be inserted later just before the ARM | |
2df2751d CL |
3948 | PLT stub. If a long branch stub is needed, we'll add a |
3949 | Thumb->Arm one and branch directly to the ARM PLT entry. | |
3950 | Here, we have to check if a pre-PLT Thumb->ARM stub | |
3951 | is needed and if it will be close enough. */ | |
34e77a92 RS |
3952 | |
3953 | destination = (splt->output_section->vma | |
3954 | + splt->output_offset | |
3955 | + root_plt->offset); | |
3956 | st_type = STT_FUNC; | |
2df2751d CL |
3957 | |
3958 | /* Thumb branch/call to PLT: it can become a branch to ARM | |
3959 | or to Thumb. We must perform the same checks and | |
3960 | corrections as in elf32_arm_final_link_relocate. */ | |
3961 | if ((r_type == R_ARM_THM_CALL) | |
3962 | || (r_type == R_ARM_THM_JUMP24)) | |
3963 | { | |
3964 | if (globals->use_blx | |
3965 | && r_type == R_ARM_THM_CALL | |
3966 | && !thumb_only) | |
3967 | { | |
3968 | /* If the Thumb BLX instruction is available, convert | |
3969 | the BL to a BLX instruction to call the ARM-mode | |
3970 | PLT entry. */ | |
3971 | branch_type = ST_BRANCH_TO_ARM; | |
3972 | } | |
3973 | else | |
3974 | { | |
3975 | if (!thumb_only) | |
3976 | /* Target the Thumb stub before the ARM PLT entry. */ | |
3977 | destination -= PLT_THUMB_STUB_SIZE; | |
3978 | branch_type = ST_BRANCH_TO_THUMB; | |
3979 | } | |
3980 | } | |
3981 | else | |
3982 | { | |
3983 | branch_type = ST_BRANCH_TO_ARM; | |
3984 | } | |
34e77a92 | 3985 | } |
5fa9e92f | 3986 | } |
34e77a92 RS |
3987 | /* Calls to STT_GNU_IFUNC symbols should go through a PLT. */ |
3988 | BFD_ASSERT (st_type != STT_GNU_IFUNC); | |
906e58ca | 3989 | |
fe33d2fa CL |
3990 | branch_offset = (bfd_signed_vma)(destination - location); |
3991 | ||
0855e32b | 3992 | if (r_type == R_ARM_THM_CALL || r_type == R_ARM_THM_JUMP24 |
c5423981 | 3993 | || r_type == R_ARM_THM_TLS_CALL || r_type == R_ARM_THM_JUMP19) |
906e58ca | 3994 | { |
5fa9e92f CL |
3995 | /* Handle cases where: |
3996 | - this call goes too far (different Thumb/Thumb2 max | |
99059e56 | 3997 | distance) |
155d87d7 | 3998 | - it's a Thumb->Arm call and blx is not available, or it's a |
99059e56 RM |
3999 | Thumb->Arm branch (not bl). A stub is needed in this case, |
4000 | but only if this call is not through a PLT entry. Indeed, | |
4001 | PLT stubs handle mode switching already. | |
5fa9e92f | 4002 | */ |
5e866f5a | 4003 | if ((!thumb2_bl |
906e58ca NC |
4004 | && (branch_offset > THM_MAX_FWD_BRANCH_OFFSET |
4005 | || (branch_offset < THM_MAX_BWD_BRANCH_OFFSET))) | |
5e866f5a | 4006 | || (thumb2_bl |
906e58ca NC |
4007 | && (branch_offset > THM2_MAX_FWD_BRANCH_OFFSET |
4008 | || (branch_offset < THM2_MAX_BWD_BRANCH_OFFSET))) | |
c5423981 TG |
4009 | || (thumb2 |
4010 | && (branch_offset > THM2_MAX_FWD_COND_BRANCH_OFFSET | |
4011 | || (branch_offset < THM2_MAX_BWD_COND_BRANCH_OFFSET)) | |
4012 | && (r_type == R_ARM_THM_JUMP19)) | |
35fc36a8 | 4013 | || (branch_type == ST_BRANCH_TO_ARM |
0855e32b NS |
4014 | && (((r_type == R_ARM_THM_CALL |
4015 | || r_type == R_ARM_THM_TLS_CALL) && !globals->use_blx) | |
c5423981 TG |
4016 | || (r_type == R_ARM_THM_JUMP24) |
4017 | || (r_type == R_ARM_THM_JUMP19)) | |
5fa9e92f | 4018 | && !use_plt)) |
906e58ca | 4019 | { |
2df2751d CL |
4020 | /* If we need to insert a Thumb-Thumb long branch stub to a |
4021 | PLT, use one that branches directly to the ARM PLT | |
4022 | stub. If we pretended we'd use the pre-PLT Thumb->ARM | |
4023 | stub, undo this now. */ | |
4024 | if ((branch_type == ST_BRANCH_TO_THUMB) && use_plt && !thumb_only) { | |
4025 | branch_type = ST_BRANCH_TO_ARM; | |
4026 | branch_offset += PLT_THUMB_STUB_SIZE; | |
4027 | } | |
4028 | ||
35fc36a8 | 4029 | if (branch_type == ST_BRANCH_TO_THUMB) |
906e58ca NC |
4030 | { |
4031 | /* Thumb to thumb. */ | |
4032 | if (!thumb_only) | |
4033 | { | |
d5a67c02 AV |
4034 | if (input_sec->flags & SEC_ELF_PURECODE) |
4035 | (*_bfd_error_handler) (_("%B(%s): warning: long branch " | |
4036 | " veneers used in section with " | |
4037 | "SHF_ARM_PURECODE section " | |
4038 | "attribute is only supported" | |
4039 | " for M-profile targets that " | |
4040 | "implement the movw " | |
4041 | "instruction.")); | |
4042 | ||
0e1862bb | 4043 | stub_type = (bfd_link_pic (info) | globals->pic_veneer) |
c2b4a39d | 4044 | /* PIC stubs. */ |
155d87d7 | 4045 | ? ((globals->use_blx |
9553db3c | 4046 | && (r_type == R_ARM_THM_CALL)) |
155d87d7 CL |
4047 | /* V5T and above. Stub starts with ARM code, so |
4048 | we must be able to switch mode before | |
4049 | reaching it, which is only possible for 'bl' | |
4050 | (ie R_ARM_THM_CALL relocation). */ | |
cf3eccff | 4051 | ? arm_stub_long_branch_any_thumb_pic |
ebe24dd4 | 4052 | /* On V4T, use Thumb code only. */ |
d3626fb0 | 4053 | : arm_stub_long_branch_v4t_thumb_thumb_pic) |
c2b4a39d CL |
4054 | |
4055 | /* non-PIC stubs. */ | |
155d87d7 | 4056 | : ((globals->use_blx |
9553db3c | 4057 | && (r_type == R_ARM_THM_CALL)) |
c2b4a39d CL |
4058 | /* V5T and above. */ |
4059 | ? arm_stub_long_branch_any_any | |
4060 | /* V4T. */ | |
d3626fb0 | 4061 | : arm_stub_long_branch_v4t_thumb_thumb); |
906e58ca NC |
4062 | } |
4063 | else | |
4064 | { | |
d5a67c02 AV |
4065 | if (thumb2_movw && (input_sec->flags & SEC_ELF_PURECODE)) |
4066 | stub_type = arm_stub_long_branch_thumb2_only_pure; | |
4067 | else | |
4068 | { | |
4069 | if (input_sec->flags & SEC_ELF_PURECODE) | |
4070 | (*_bfd_error_handler) (_("%B(%s): warning: long branch " | |
4071 | " veneers used in section with " | |
4072 | "SHF_ARM_PURECODE section " | |
4073 | "attribute is only supported" | |
4074 | " for M-profile targets that " | |
4075 | "implement the movw " | |
4076 | "instruction.")); | |
4077 | ||
4078 | stub_type = (bfd_link_pic (info) | globals->pic_veneer) | |
4079 | /* PIC stub. */ | |
4080 | ? arm_stub_long_branch_thumb_only_pic | |
4081 | /* non-PIC stub. */ | |
4082 | : (thumb2 ? arm_stub_long_branch_thumb2_only | |
4083 | : arm_stub_long_branch_thumb_only); | |
4084 | } | |
906e58ca NC |
4085 | } |
4086 | } | |
4087 | else | |
4088 | { | |
d5a67c02 AV |
4089 | if (input_sec->flags & SEC_ELF_PURECODE) |
4090 | (*_bfd_error_handler) (_("%B(%s): warning: long branch " | |
4091 | " veneers used in section with " | |
4092 | "SHF_ARM_PURECODE section " | |
4093 | "attribute is only supported" | |
4094 | " for M-profile targets that " | |
4095 | "implement the movw " | |
4096 | "instruction.")); | |
4097 | ||
906e58ca | 4098 | /* Thumb to arm. */ |
c820be07 NC |
4099 | if (sym_sec != NULL |
4100 | && sym_sec->owner != NULL | |
4101 | && !INTERWORK_FLAG (sym_sec->owner)) | |
4102 | { | |
4103 | (*_bfd_error_handler) | |
4104 | (_("%B(%s): warning: interworking not enabled.\n" | |
4105 | " first occurrence: %B: Thumb call to ARM"), | |
4106 | sym_sec->owner, input_bfd, name); | |
4107 | } | |
4108 | ||
0855e32b | 4109 | stub_type = |
0e1862bb | 4110 | (bfd_link_pic (info) | globals->pic_veneer) |
c2b4a39d | 4111 | /* PIC stubs. */ |
0855e32b | 4112 | ? (r_type == R_ARM_THM_TLS_CALL |
6a631e86 | 4113 | /* TLS PIC stubs. */ |
0855e32b NS |
4114 | ? (globals->use_blx ? arm_stub_long_branch_any_tls_pic |
4115 | : arm_stub_long_branch_v4t_thumb_tls_pic) | |
4116 | : ((globals->use_blx && r_type == R_ARM_THM_CALL) | |
4117 | /* V5T PIC and above. */ | |
4118 | ? arm_stub_long_branch_any_arm_pic | |
4119 | /* V4T PIC stub. */ | |
4120 | : arm_stub_long_branch_v4t_thumb_arm_pic)) | |
c2b4a39d CL |
4121 | |
4122 | /* non-PIC stubs. */ | |
0855e32b | 4123 | : ((globals->use_blx && r_type == R_ARM_THM_CALL) |
c2b4a39d CL |
4124 | /* V5T and above. */ |
4125 | ? arm_stub_long_branch_any_any | |
4126 | /* V4T. */ | |
4127 | : arm_stub_long_branch_v4t_thumb_arm); | |
c820be07 NC |
4128 | |
4129 | /* Handle v4t short branches. */ | |
fea2b4d6 | 4130 | if ((stub_type == arm_stub_long_branch_v4t_thumb_arm) |
c820be07 NC |
4131 | && (branch_offset <= THM_MAX_FWD_BRANCH_OFFSET) |
4132 | && (branch_offset >= THM_MAX_BWD_BRANCH_OFFSET)) | |
fea2b4d6 | 4133 | stub_type = arm_stub_short_branch_v4t_thumb_arm; |
906e58ca NC |
4134 | } |
4135 | } | |
4136 | } | |
fe33d2fa CL |
4137 | else if (r_type == R_ARM_CALL |
4138 | || r_type == R_ARM_JUMP24 | |
0855e32b NS |
4139 | || r_type == R_ARM_PLT32 |
4140 | || r_type == R_ARM_TLS_CALL) | |
906e58ca | 4141 | { |
d5a67c02 AV |
4142 | if (input_sec->flags & SEC_ELF_PURECODE) |
4143 | (*_bfd_error_handler) (_("%B(%s): warning: long branch " | |
4144 | " veneers used in section with " | |
4145 | "SHF_ARM_PURECODE section " | |
4146 | "attribute is only supported" | |
4147 | " for M-profile targets that " | |
4148 | "implement the movw " | |
4149 | "instruction.")); | |
35fc36a8 | 4150 | if (branch_type == ST_BRANCH_TO_THUMB) |
906e58ca NC |
4151 | { |
4152 | /* Arm to thumb. */ | |
c820be07 NC |
4153 | |
4154 | if (sym_sec != NULL | |
4155 | && sym_sec->owner != NULL | |
4156 | && !INTERWORK_FLAG (sym_sec->owner)) | |
4157 | { | |
4158 | (*_bfd_error_handler) | |
4159 | (_("%B(%s): warning: interworking not enabled.\n" | |
c2b4a39d | 4160 | " first occurrence: %B: ARM call to Thumb"), |
c820be07 NC |
4161 | sym_sec->owner, input_bfd, name); |
4162 | } | |
4163 | ||
4164 | /* We have an extra 2-bytes reach because of | |
4165 | the mode change (bit 24 (H) of BLX encoding). */ | |
4116d8d7 PB |
4166 | if (branch_offset > (ARM_MAX_FWD_BRANCH_OFFSET + 2) |
4167 | || (branch_offset < ARM_MAX_BWD_BRANCH_OFFSET) | |
0855e32b | 4168 | || (r_type == R_ARM_CALL && !globals->use_blx) |
4116d8d7 PB |
4169 | || (r_type == R_ARM_JUMP24) |
4170 | || (r_type == R_ARM_PLT32)) | |
906e58ca | 4171 | { |
0e1862bb | 4172 | stub_type = (bfd_link_pic (info) | globals->pic_veneer) |
c2b4a39d | 4173 | /* PIC stubs. */ |
ebe24dd4 CL |
4174 | ? ((globals->use_blx) |
4175 | /* V5T and above. */ | |
4176 | ? arm_stub_long_branch_any_thumb_pic | |
4177 | /* V4T stub. */ | |
4178 | : arm_stub_long_branch_v4t_arm_thumb_pic) | |
4179 | ||
c2b4a39d CL |
4180 | /* non-PIC stubs. */ |
4181 | : ((globals->use_blx) | |
4182 | /* V5T and above. */ | |
4183 | ? arm_stub_long_branch_any_any | |
4184 | /* V4T. */ | |
4185 | : arm_stub_long_branch_v4t_arm_thumb); | |
906e58ca NC |
4186 | } |
4187 | } | |
4188 | else | |
4189 | { | |
4190 | /* Arm to arm. */ | |
4191 | if (branch_offset > ARM_MAX_FWD_BRANCH_OFFSET | |
4192 | || (branch_offset < ARM_MAX_BWD_BRANCH_OFFSET)) | |
4193 | { | |
0855e32b | 4194 | stub_type = |
0e1862bb | 4195 | (bfd_link_pic (info) | globals->pic_veneer) |
c2b4a39d | 4196 | /* PIC stubs. */ |
0855e32b | 4197 | ? (r_type == R_ARM_TLS_CALL |
6a631e86 | 4198 | /* TLS PIC Stub. */ |
0855e32b | 4199 | ? arm_stub_long_branch_any_tls_pic |
7a89b94e NC |
4200 | : (globals->nacl_p |
4201 | ? arm_stub_long_branch_arm_nacl_pic | |
4202 | : arm_stub_long_branch_any_arm_pic)) | |
c2b4a39d | 4203 | /* non-PIC stubs. */ |
7a89b94e NC |
4204 | : (globals->nacl_p |
4205 | ? arm_stub_long_branch_arm_nacl | |
4206 | : arm_stub_long_branch_any_any); | |
906e58ca NC |
4207 | } |
4208 | } | |
4209 | } | |
4210 | ||
fe33d2fa CL |
4211 | /* If a stub is needed, record the actual destination type. */ |
4212 | if (stub_type != arm_stub_none) | |
35fc36a8 | 4213 | *actual_branch_type = branch_type; |
fe33d2fa | 4214 | |
906e58ca NC |
4215 | return stub_type; |
4216 | } | |
4217 | ||
4218 | /* Build a name for an entry in the stub hash table. */ | |
4219 | ||
4220 | static char * | |
4221 | elf32_arm_stub_name (const asection *input_section, | |
4222 | const asection *sym_sec, | |
4223 | const struct elf32_arm_link_hash_entry *hash, | |
fe33d2fa CL |
4224 | const Elf_Internal_Rela *rel, |
4225 | enum elf32_arm_stub_type stub_type) | |
906e58ca NC |
4226 | { |
4227 | char *stub_name; | |
4228 | bfd_size_type len; | |
4229 | ||
4230 | if (hash) | |
4231 | { | |
fe33d2fa | 4232 | len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 8 + 1 + 2 + 1; |
21d799b5 | 4233 | stub_name = (char *) bfd_malloc (len); |
906e58ca | 4234 | if (stub_name != NULL) |
fe33d2fa | 4235 | sprintf (stub_name, "%08x_%s+%x_%d", |
906e58ca NC |
4236 | input_section->id & 0xffffffff, |
4237 | hash->root.root.root.string, | |
fe33d2fa CL |
4238 | (int) rel->r_addend & 0xffffffff, |
4239 | (int) stub_type); | |
906e58ca NC |
4240 | } |
4241 | else | |
4242 | { | |
fe33d2fa | 4243 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1 + 2 + 1; |
21d799b5 | 4244 | stub_name = (char *) bfd_malloc (len); |
906e58ca | 4245 | if (stub_name != NULL) |
fe33d2fa | 4246 | sprintf (stub_name, "%08x_%x:%x+%x_%d", |
906e58ca NC |
4247 | input_section->id & 0xffffffff, |
4248 | sym_sec->id & 0xffffffff, | |
0855e32b NS |
4249 | ELF32_R_TYPE (rel->r_info) == R_ARM_TLS_CALL |
4250 | || ELF32_R_TYPE (rel->r_info) == R_ARM_THM_TLS_CALL | |
4251 | ? 0 : (int) ELF32_R_SYM (rel->r_info) & 0xffffffff, | |
fe33d2fa CL |
4252 | (int) rel->r_addend & 0xffffffff, |
4253 | (int) stub_type); | |
906e58ca NC |
4254 | } |
4255 | ||
4256 | return stub_name; | |
4257 | } | |
4258 | ||
4259 | /* Look up an entry in the stub hash. Stub entries are cached because | |
4260 | creating the stub name takes a bit of time. */ | |
4261 | ||
4262 | static struct elf32_arm_stub_hash_entry * | |
4263 | elf32_arm_get_stub_entry (const asection *input_section, | |
4264 | const asection *sym_sec, | |
4265 | struct elf_link_hash_entry *hash, | |
4266 | const Elf_Internal_Rela *rel, | |
fe33d2fa CL |
4267 | struct elf32_arm_link_hash_table *htab, |
4268 | enum elf32_arm_stub_type stub_type) | |
906e58ca NC |
4269 | { |
4270 | struct elf32_arm_stub_hash_entry *stub_entry; | |
4271 | struct elf32_arm_link_hash_entry *h = (struct elf32_arm_link_hash_entry *) hash; | |
4272 | const asection *id_sec; | |
4273 | ||
4274 | if ((input_section->flags & SEC_CODE) == 0) | |
4275 | return NULL; | |
4276 | ||
4277 | /* If this input section is part of a group of sections sharing one | |
4278 | stub section, then use the id of the first section in the group. | |
4279 | Stub names need to include a section id, as there may well be | |
4280 | more than one stub used to reach say, printf, and we need to | |
4281 | distinguish between them. */ | |
c2abbbeb | 4282 | BFD_ASSERT (input_section->id <= htab->top_id); |
906e58ca NC |
4283 | id_sec = htab->stub_group[input_section->id].link_sec; |
4284 | ||
4285 | if (h != NULL && h->stub_cache != NULL | |
4286 | && h->stub_cache->h == h | |
fe33d2fa CL |
4287 | && h->stub_cache->id_sec == id_sec |
4288 | && h->stub_cache->stub_type == stub_type) | |
906e58ca NC |
4289 | { |
4290 | stub_entry = h->stub_cache; | |
4291 | } | |
4292 | else | |
4293 | { | |
4294 | char *stub_name; | |
4295 | ||
fe33d2fa | 4296 | stub_name = elf32_arm_stub_name (id_sec, sym_sec, h, rel, stub_type); |
906e58ca NC |
4297 | if (stub_name == NULL) |
4298 | return NULL; | |
4299 | ||
4300 | stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, | |
4301 | stub_name, FALSE, FALSE); | |
4302 | if (h != NULL) | |
4303 | h->stub_cache = stub_entry; | |
4304 | ||
4305 | free (stub_name); | |
4306 | } | |
4307 | ||
4308 | return stub_entry; | |
4309 | } | |
4310 | ||
daa4adae TP |
4311 | /* Whether veneers of type STUB_TYPE require to be in a dedicated output |
4312 | section. */ | |
4313 | ||
4314 | static bfd_boolean | |
4315 | arm_dedicated_stub_output_section_required (enum elf32_arm_stub_type stub_type) | |
4316 | { | |
4317 | if (stub_type >= max_stub_type) | |
4318 | abort (); /* Should be unreachable. */ | |
4319 | ||
4ba2ef8f TP |
4320 | switch (stub_type) |
4321 | { | |
4322 | case arm_stub_cmse_branch_thumb_only: | |
4323 | return TRUE; | |
4324 | ||
4325 | default: | |
4326 | return FALSE; | |
4327 | } | |
4328 | ||
4329 | abort (); /* Should be unreachable. */ | |
daa4adae TP |
4330 | } |
4331 | ||
4332 | /* Required alignment (as a power of 2) for the dedicated section holding | |
4333 | veneers of type STUB_TYPE, or 0 if veneers of this type are interspersed | |
4334 | with input sections. */ | |
4335 | ||
4336 | static int | |
4337 | arm_dedicated_stub_output_section_required_alignment | |
4338 | (enum elf32_arm_stub_type stub_type) | |
4339 | { | |
4340 | if (stub_type >= max_stub_type) | |
4341 | abort (); /* Should be unreachable. */ | |
4342 | ||
4ba2ef8f TP |
4343 | switch (stub_type) |
4344 | { | |
4345 | /* Vectors of Secure Gateway veneers must be aligned on 32byte | |
4346 | boundary. */ | |
4347 | case arm_stub_cmse_branch_thumb_only: | |
4348 | return 5; | |
4349 | ||
4350 | default: | |
4351 | BFD_ASSERT (!arm_dedicated_stub_output_section_required (stub_type)); | |
4352 | return 0; | |
4353 | } | |
4354 | ||
4355 | abort (); /* Should be unreachable. */ | |
daa4adae TP |
4356 | } |
4357 | ||
4358 | /* Name of the dedicated output section to put veneers of type STUB_TYPE, or | |
4359 | NULL if veneers of this type are interspersed with input sections. */ | |
4360 | ||
4361 | static const char * | |
4362 | arm_dedicated_stub_output_section_name (enum elf32_arm_stub_type stub_type) | |
4363 | { | |
4364 | if (stub_type >= max_stub_type) | |
4365 | abort (); /* Should be unreachable. */ | |
4366 | ||
4ba2ef8f TP |
4367 | switch (stub_type) |
4368 | { | |
4369 | case arm_stub_cmse_branch_thumb_only: | |
4370 | return ".gnu.sgstubs"; | |
4371 | ||
4372 | default: | |
4373 | BFD_ASSERT (!arm_dedicated_stub_output_section_required (stub_type)); | |
4374 | return NULL; | |
4375 | } | |
4376 | ||
4377 | abort (); /* Should be unreachable. */ | |
daa4adae TP |
4378 | } |
4379 | ||
4380 | /* If veneers of type STUB_TYPE should go in a dedicated output section, | |
4381 | returns the address of the hash table field in HTAB holding a pointer to the | |
4382 | corresponding input section. Otherwise, returns NULL. */ | |
4383 | ||
4384 | static asection ** | |
4ba2ef8f TP |
4385 | arm_dedicated_stub_input_section_ptr (struct elf32_arm_link_hash_table *htab, |
4386 | enum elf32_arm_stub_type stub_type) | |
daa4adae TP |
4387 | { |
4388 | if (stub_type >= max_stub_type) | |
4389 | abort (); /* Should be unreachable. */ | |
4390 | ||
4ba2ef8f TP |
4391 | switch (stub_type) |
4392 | { | |
4393 | case arm_stub_cmse_branch_thumb_only: | |
4394 | return &htab->cmse_stub_sec; | |
4395 | ||
4396 | default: | |
4397 | BFD_ASSERT (!arm_dedicated_stub_output_section_required (stub_type)); | |
4398 | return NULL; | |
4399 | } | |
4400 | ||
4401 | abort (); /* Should be unreachable. */ | |
daa4adae TP |
4402 | } |
4403 | ||
4404 | /* Find or create a stub section to contain a stub of type STUB_TYPE. SECTION | |
4405 | is the section that branch into veneer and can be NULL if stub should go in | |
4406 | a dedicated output section. Returns a pointer to the stub section, and the | |
4407 | section to which the stub section will be attached (in *LINK_SEC_P). | |
48229727 | 4408 | LINK_SEC_P may be NULL. */ |
906e58ca | 4409 | |
48229727 JB |
4410 | static asection * |
4411 | elf32_arm_create_or_find_stub_sec (asection **link_sec_p, asection *section, | |
daa4adae TP |
4412 | struct elf32_arm_link_hash_table *htab, |
4413 | enum elf32_arm_stub_type stub_type) | |
906e58ca | 4414 | { |
daa4adae TP |
4415 | asection *link_sec, *out_sec, **stub_sec_p; |
4416 | const char *stub_sec_prefix; | |
4417 | bfd_boolean dedicated_output_section = | |
4418 | arm_dedicated_stub_output_section_required (stub_type); | |
4419 | int align; | |
906e58ca | 4420 | |
daa4adae | 4421 | if (dedicated_output_section) |
906e58ca | 4422 | { |
daa4adae TP |
4423 | bfd *output_bfd = htab->obfd; |
4424 | const char *out_sec_name = | |
4425 | arm_dedicated_stub_output_section_name (stub_type); | |
4426 | link_sec = NULL; | |
4427 | stub_sec_p = arm_dedicated_stub_input_section_ptr (htab, stub_type); | |
4428 | stub_sec_prefix = out_sec_name; | |
4429 | align = arm_dedicated_stub_output_section_required_alignment (stub_type); | |
4430 | out_sec = bfd_get_section_by_name (output_bfd, out_sec_name); | |
4431 | if (out_sec == NULL) | |
906e58ca | 4432 | { |
daa4adae TP |
4433 | (*_bfd_error_handler) (_("No address assigned to the veneers output " |
4434 | "section %s"), out_sec_name); | |
4435 | return NULL; | |
906e58ca | 4436 | } |
daa4adae TP |
4437 | } |
4438 | else | |
4439 | { | |
c2abbbeb | 4440 | BFD_ASSERT (section->id <= htab->top_id); |
daa4adae TP |
4441 | link_sec = htab->stub_group[section->id].link_sec; |
4442 | BFD_ASSERT (link_sec != NULL); | |
4443 | stub_sec_p = &htab->stub_group[section->id].stub_sec; | |
4444 | if (*stub_sec_p == NULL) | |
4445 | stub_sec_p = &htab->stub_group[link_sec->id].stub_sec; | |
4446 | stub_sec_prefix = link_sec->name; | |
4447 | out_sec = link_sec->output_section; | |
4448 | align = htab->nacl_p ? 4 : 3; | |
906e58ca | 4449 | } |
b38cadfb | 4450 | |
daa4adae TP |
4451 | if (*stub_sec_p == NULL) |
4452 | { | |
4453 | size_t namelen; | |
4454 | bfd_size_type len; | |
4455 | char *s_name; | |
4456 | ||
4457 | namelen = strlen (stub_sec_prefix); | |
4458 | len = namelen + sizeof (STUB_SUFFIX); | |
4459 | s_name = (char *) bfd_alloc (htab->stub_bfd, len); | |
4460 | if (s_name == NULL) | |
4461 | return NULL; | |
4462 | ||
4463 | memcpy (s_name, stub_sec_prefix, namelen); | |
4464 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
4465 | *stub_sec_p = (*htab->add_stub_section) (s_name, out_sec, link_sec, | |
4466 | align); | |
4467 | if (*stub_sec_p == NULL) | |
4468 | return NULL; | |
4469 | ||
4470 | out_sec->flags |= SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE | |
4471 | | SEC_HAS_CONTENTS | SEC_RELOC | SEC_IN_MEMORY | |
4472 | | SEC_KEEP; | |
4473 | } | |
4474 | ||
4475 | if (!dedicated_output_section) | |
4476 | htab->stub_group[section->id].stub_sec = *stub_sec_p; | |
4477 | ||
48229727 JB |
4478 | if (link_sec_p) |
4479 | *link_sec_p = link_sec; | |
b38cadfb | 4480 | |
daa4adae | 4481 | return *stub_sec_p; |
48229727 JB |
4482 | } |
4483 | ||
4484 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
4485 | stub entry are initialised. */ | |
4486 | ||
4487 | static struct elf32_arm_stub_hash_entry * | |
daa4adae TP |
4488 | elf32_arm_add_stub (const char *stub_name, asection *section, |
4489 | struct elf32_arm_link_hash_table *htab, | |
4490 | enum elf32_arm_stub_type stub_type) | |
48229727 JB |
4491 | { |
4492 | asection *link_sec; | |
4493 | asection *stub_sec; | |
4494 | struct elf32_arm_stub_hash_entry *stub_entry; | |
4495 | ||
daa4adae TP |
4496 | stub_sec = elf32_arm_create_or_find_stub_sec (&link_sec, section, htab, |
4497 | stub_type); | |
48229727 JB |
4498 | if (stub_sec == NULL) |
4499 | return NULL; | |
906e58ca NC |
4500 | |
4501 | /* Enter this entry into the linker stub hash table. */ | |
4502 | stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
4503 | TRUE, FALSE); | |
4504 | if (stub_entry == NULL) | |
4505 | { | |
6bde4c52 TP |
4506 | if (section == NULL) |
4507 | section = stub_sec; | |
906e58ca NC |
4508 | (*_bfd_error_handler) (_("%s: cannot create stub entry %s"), |
4509 | section->owner, | |
4510 | stub_name); | |
4511 | return NULL; | |
4512 | } | |
4513 | ||
4514 | stub_entry->stub_sec = stub_sec; | |
0955507f | 4515 | stub_entry->stub_offset = (bfd_vma) -1; |
906e58ca NC |
4516 | stub_entry->id_sec = link_sec; |
4517 | ||
906e58ca NC |
4518 | return stub_entry; |
4519 | } | |
4520 | ||
4521 | /* Store an Arm insn into an output section not processed by | |
4522 | elf32_arm_write_section. */ | |
4523 | ||
4524 | static void | |
8029a119 NC |
4525 | put_arm_insn (struct elf32_arm_link_hash_table * htab, |
4526 | bfd * output_bfd, bfd_vma val, void * ptr) | |
906e58ca NC |
4527 | { |
4528 | if (htab->byteswap_code != bfd_little_endian (output_bfd)) | |
4529 | bfd_putl32 (val, ptr); | |
4530 | else | |
4531 | bfd_putb32 (val, ptr); | |
4532 | } | |
4533 | ||
4534 | /* Store a 16-bit Thumb insn into an output section not processed by | |
4535 | elf32_arm_write_section. */ | |
4536 | ||
4537 | static void | |
8029a119 NC |
4538 | put_thumb_insn (struct elf32_arm_link_hash_table * htab, |
4539 | bfd * output_bfd, bfd_vma val, void * ptr) | |
906e58ca NC |
4540 | { |
4541 | if (htab->byteswap_code != bfd_little_endian (output_bfd)) | |
4542 | bfd_putl16 (val, ptr); | |
4543 | else | |
4544 | bfd_putb16 (val, ptr); | |
4545 | } | |
4546 | ||
a504d23a LA |
4547 | /* Store a Thumb2 insn into an output section not processed by |
4548 | elf32_arm_write_section. */ | |
4549 | ||
4550 | static void | |
4551 | put_thumb2_insn (struct elf32_arm_link_hash_table * htab, | |
b98e6871 | 4552 | bfd * output_bfd, bfd_vma val, bfd_byte * ptr) |
a504d23a LA |
4553 | { |
4554 | /* T2 instructions are 16-bit streamed. */ | |
4555 | if (htab->byteswap_code != bfd_little_endian (output_bfd)) | |
4556 | { | |
4557 | bfd_putl16 ((val >> 16) & 0xffff, ptr); | |
4558 | bfd_putl16 ((val & 0xffff), ptr + 2); | |
4559 | } | |
4560 | else | |
4561 | { | |
4562 | bfd_putb16 ((val >> 16) & 0xffff, ptr); | |
4563 | bfd_putb16 ((val & 0xffff), ptr + 2); | |
4564 | } | |
4565 | } | |
4566 | ||
0855e32b NS |
4567 | /* If it's possible to change R_TYPE to a more efficient access |
4568 | model, return the new reloc type. */ | |
4569 | ||
4570 | static unsigned | |
b38cadfb | 4571 | elf32_arm_tls_transition (struct bfd_link_info *info, int r_type, |
0855e32b NS |
4572 | struct elf_link_hash_entry *h) |
4573 | { | |
4574 | int is_local = (h == NULL); | |
4575 | ||
0e1862bb L |
4576 | if (bfd_link_pic (info) |
4577 | || (h && h->root.type == bfd_link_hash_undefweak)) | |
0855e32b NS |
4578 | return r_type; |
4579 | ||
b38cadfb | 4580 | /* We do not support relaxations for Old TLS models. */ |
0855e32b NS |
4581 | switch (r_type) |
4582 | { | |
4583 | case R_ARM_TLS_GOTDESC: | |
4584 | case R_ARM_TLS_CALL: | |
4585 | case R_ARM_THM_TLS_CALL: | |
4586 | case R_ARM_TLS_DESCSEQ: | |
4587 | case R_ARM_THM_TLS_DESCSEQ: | |
4588 | return is_local ? R_ARM_TLS_LE32 : R_ARM_TLS_IE32; | |
4589 | } | |
4590 | ||
4591 | return r_type; | |
4592 | } | |
4593 | ||
48229727 JB |
4594 | static bfd_reloc_status_type elf32_arm_final_link_relocate |
4595 | (reloc_howto_type *, bfd *, bfd *, asection *, bfd_byte *, | |
4596 | Elf_Internal_Rela *, bfd_vma, struct bfd_link_info *, asection *, | |
34e77a92 RS |
4597 | const char *, unsigned char, enum arm_st_branch_type, |
4598 | struct elf_link_hash_entry *, bfd_boolean *, char **); | |
48229727 | 4599 | |
4563a860 JB |
4600 | static unsigned int |
4601 | arm_stub_required_alignment (enum elf32_arm_stub_type stub_type) | |
4602 | { | |
4603 | switch (stub_type) | |
4604 | { | |
4605 | case arm_stub_a8_veneer_b_cond: | |
4606 | case arm_stub_a8_veneer_b: | |
4607 | case arm_stub_a8_veneer_bl: | |
4608 | return 2; | |
4609 | ||
4610 | case arm_stub_long_branch_any_any: | |
4611 | case arm_stub_long_branch_v4t_arm_thumb: | |
4612 | case arm_stub_long_branch_thumb_only: | |
80c135e5 | 4613 | case arm_stub_long_branch_thumb2_only: |
d5a67c02 | 4614 | case arm_stub_long_branch_thumb2_only_pure: |
4563a860 JB |
4615 | case arm_stub_long_branch_v4t_thumb_thumb: |
4616 | case arm_stub_long_branch_v4t_thumb_arm: | |
4617 | case arm_stub_short_branch_v4t_thumb_arm: | |
4618 | case arm_stub_long_branch_any_arm_pic: | |
4619 | case arm_stub_long_branch_any_thumb_pic: | |
4620 | case arm_stub_long_branch_v4t_thumb_thumb_pic: | |
4621 | case arm_stub_long_branch_v4t_arm_thumb_pic: | |
4622 | case arm_stub_long_branch_v4t_thumb_arm_pic: | |
4623 | case arm_stub_long_branch_thumb_only_pic: | |
0855e32b NS |
4624 | case arm_stub_long_branch_any_tls_pic: |
4625 | case arm_stub_long_branch_v4t_thumb_tls_pic: | |
4ba2ef8f | 4626 | case arm_stub_cmse_branch_thumb_only: |
4563a860 JB |
4627 | case arm_stub_a8_veneer_blx: |
4628 | return 4; | |
b38cadfb | 4629 | |
7a89b94e NC |
4630 | case arm_stub_long_branch_arm_nacl: |
4631 | case arm_stub_long_branch_arm_nacl_pic: | |
4632 | return 16; | |
4633 | ||
4563a860 JB |
4634 | default: |
4635 | abort (); /* Should be unreachable. */ | |
4636 | } | |
4637 | } | |
4638 | ||
4f4faa4d TP |
4639 | /* Returns whether stubs of type STUB_TYPE take over the symbol they are |
4640 | veneering (TRUE) or have their own symbol (FALSE). */ | |
4641 | ||
4642 | static bfd_boolean | |
4643 | arm_stub_sym_claimed (enum elf32_arm_stub_type stub_type) | |
4644 | { | |
4645 | if (stub_type >= max_stub_type) | |
4646 | abort (); /* Should be unreachable. */ | |
4647 | ||
4ba2ef8f TP |
4648 | switch (stub_type) |
4649 | { | |
4650 | case arm_stub_cmse_branch_thumb_only: | |
4651 | return TRUE; | |
4652 | ||
4653 | default: | |
4654 | return FALSE; | |
4655 | } | |
4656 | ||
4657 | abort (); /* Should be unreachable. */ | |
4f4faa4d TP |
4658 | } |
4659 | ||
d7c5bd02 TP |
4660 | /* Returns the padding needed for the dedicated section used stubs of type |
4661 | STUB_TYPE. */ | |
4662 | ||
4663 | static int | |
4664 | arm_dedicated_stub_section_padding (enum elf32_arm_stub_type stub_type) | |
4665 | { | |
4666 | if (stub_type >= max_stub_type) | |
4667 | abort (); /* Should be unreachable. */ | |
4668 | ||
4ba2ef8f TP |
4669 | switch (stub_type) |
4670 | { | |
4671 | case arm_stub_cmse_branch_thumb_only: | |
4672 | return 32; | |
4673 | ||
4674 | default: | |
4675 | return 0; | |
4676 | } | |
4677 | ||
4678 | abort (); /* Should be unreachable. */ | |
d7c5bd02 TP |
4679 | } |
4680 | ||
0955507f TP |
4681 | /* If veneers of type STUB_TYPE should go in a dedicated output section, |
4682 | returns the address of the hash table field in HTAB holding the offset at | |
4683 | which new veneers should be layed out in the stub section. */ | |
4684 | ||
4685 | static bfd_vma* | |
4686 | arm_new_stubs_start_offset_ptr (struct elf32_arm_link_hash_table *htab, | |
4687 | enum elf32_arm_stub_type stub_type) | |
4688 | { | |
4689 | switch (stub_type) | |
4690 | { | |
4691 | case arm_stub_cmse_branch_thumb_only: | |
4692 | return &htab->new_cmse_stub_offset; | |
4693 | ||
4694 | default: | |
4695 | BFD_ASSERT (!arm_dedicated_stub_output_section_required (stub_type)); | |
4696 | return NULL; | |
4697 | } | |
4698 | } | |
4699 | ||
906e58ca NC |
4700 | static bfd_boolean |
4701 | arm_build_one_stub (struct bfd_hash_entry *gen_entry, | |
4702 | void * in_arg) | |
4703 | { | |
7a89b94e | 4704 | #define MAXRELOCS 3 |
0955507f | 4705 | bfd_boolean removed_sg_veneer; |
906e58ca | 4706 | struct elf32_arm_stub_hash_entry *stub_entry; |
4dfe6ac6 | 4707 | struct elf32_arm_link_hash_table *globals; |
906e58ca | 4708 | struct bfd_link_info *info; |
906e58ca NC |
4709 | asection *stub_sec; |
4710 | bfd *stub_bfd; | |
906e58ca NC |
4711 | bfd_byte *loc; |
4712 | bfd_vma sym_value; | |
4713 | int template_size; | |
4714 | int size; | |
d3ce72d0 | 4715 | const insn_sequence *template_sequence; |
906e58ca | 4716 | int i; |
48229727 JB |
4717 | int stub_reloc_idx[MAXRELOCS] = {-1, -1}; |
4718 | int stub_reloc_offset[MAXRELOCS] = {0, 0}; | |
4719 | int nrelocs = 0; | |
0955507f | 4720 | int just_allocated = 0; |
906e58ca NC |
4721 | |
4722 | /* Massage our args to the form they really have. */ | |
4723 | stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry; | |
4724 | info = (struct bfd_link_info *) in_arg; | |
4725 | ||
4726 | globals = elf32_arm_hash_table (info); | |
4dfe6ac6 NC |
4727 | if (globals == NULL) |
4728 | return FALSE; | |
906e58ca | 4729 | |
906e58ca NC |
4730 | stub_sec = stub_entry->stub_sec; |
4731 | ||
4dfe6ac6 | 4732 | if ((globals->fix_cortex_a8 < 0) |
4563a860 JB |
4733 | != (arm_stub_required_alignment (stub_entry->stub_type) == 2)) |
4734 | /* We have to do less-strictly-aligned fixes last. */ | |
eb7c4339 | 4735 | return TRUE; |
fe33d2fa | 4736 | |
0955507f TP |
4737 | /* Assign a slot at the end of section if none assigned yet. */ |
4738 | if (stub_entry->stub_offset == (bfd_vma) -1) | |
4739 | { | |
4740 | stub_entry->stub_offset = stub_sec->size; | |
4741 | just_allocated = 1; | |
4742 | } | |
906e58ca NC |
4743 | loc = stub_sec->contents + stub_entry->stub_offset; |
4744 | ||
4745 | stub_bfd = stub_sec->owner; | |
4746 | ||
906e58ca NC |
4747 | /* This is the address of the stub destination. */ |
4748 | sym_value = (stub_entry->target_value | |
4749 | + stub_entry->target_section->output_offset | |
4750 | + stub_entry->target_section->output_section->vma); | |
4751 | ||
d3ce72d0 | 4752 | template_sequence = stub_entry->stub_template; |
461a49ca | 4753 | template_size = stub_entry->stub_template_size; |
906e58ca NC |
4754 | |
4755 | size = 0; | |
461a49ca | 4756 | for (i = 0; i < template_size; i++) |
906e58ca | 4757 | { |
d3ce72d0 | 4758 | switch (template_sequence[i].type) |
461a49ca DJ |
4759 | { |
4760 | case THUMB16_TYPE: | |
48229727 | 4761 | { |
d3ce72d0 NC |
4762 | bfd_vma data = (bfd_vma) template_sequence[i].data; |
4763 | if (template_sequence[i].reloc_addend != 0) | |
48229727 | 4764 | { |
99059e56 RM |
4765 | /* We've borrowed the reloc_addend field to mean we should |
4766 | insert a condition code into this (Thumb-1 branch) | |
4767 | instruction. See THUMB16_BCOND_INSN. */ | |
4768 | BFD_ASSERT ((data & 0xff00) == 0xd000); | |
4769 | data |= ((stub_entry->orig_insn >> 22) & 0xf) << 8; | |
48229727 | 4770 | } |
fe33d2fa | 4771 | bfd_put_16 (stub_bfd, data, loc + size); |
48229727 JB |
4772 | size += 2; |
4773 | } | |
461a49ca | 4774 | break; |
906e58ca | 4775 | |
48229727 | 4776 | case THUMB32_TYPE: |
fe33d2fa CL |
4777 | bfd_put_16 (stub_bfd, |
4778 | (template_sequence[i].data >> 16) & 0xffff, | |
4779 | loc + size); | |
4780 | bfd_put_16 (stub_bfd, template_sequence[i].data & 0xffff, | |
4781 | loc + size + 2); | |
99059e56 RM |
4782 | if (template_sequence[i].r_type != R_ARM_NONE) |
4783 | { | |
4784 | stub_reloc_idx[nrelocs] = i; | |
4785 | stub_reloc_offset[nrelocs++] = size; | |
4786 | } | |
4787 | size += 4; | |
4788 | break; | |
48229727 | 4789 | |
461a49ca | 4790 | case ARM_TYPE: |
fe33d2fa CL |
4791 | bfd_put_32 (stub_bfd, template_sequence[i].data, |
4792 | loc + size); | |
461a49ca DJ |
4793 | /* Handle cases where the target is encoded within the |
4794 | instruction. */ | |
d3ce72d0 | 4795 | if (template_sequence[i].r_type == R_ARM_JUMP24) |
461a49ca | 4796 | { |
48229727 JB |
4797 | stub_reloc_idx[nrelocs] = i; |
4798 | stub_reloc_offset[nrelocs++] = size; | |
461a49ca DJ |
4799 | } |
4800 | size += 4; | |
4801 | break; | |
4802 | ||
4803 | case DATA_TYPE: | |
d3ce72d0 | 4804 | bfd_put_32 (stub_bfd, template_sequence[i].data, loc + size); |
48229727 JB |
4805 | stub_reloc_idx[nrelocs] = i; |
4806 | stub_reloc_offset[nrelocs++] = size; | |
461a49ca DJ |
4807 | size += 4; |
4808 | break; | |
4809 | ||
4810 | default: | |
4811 | BFD_FAIL (); | |
4812 | return FALSE; | |
4813 | } | |
906e58ca | 4814 | } |
461a49ca | 4815 | |
0955507f TP |
4816 | if (just_allocated) |
4817 | stub_sec->size += size; | |
906e58ca | 4818 | |
461a49ca DJ |
4819 | /* Stub size has already been computed in arm_size_one_stub. Check |
4820 | consistency. */ | |
4821 | BFD_ASSERT (size == stub_entry->stub_size); | |
4822 | ||
906e58ca | 4823 | /* Destination is Thumb. Force bit 0 to 1 to reflect this. */ |
35fc36a8 | 4824 | if (stub_entry->branch_type == ST_BRANCH_TO_THUMB) |
906e58ca NC |
4825 | sym_value |= 1; |
4826 | ||
0955507f TP |
4827 | /* Assume non empty slots have at least one and at most MAXRELOCS entries |
4828 | to relocate in each stub. */ | |
4829 | removed_sg_veneer = | |
4830 | (size == 0 && stub_entry->stub_type == arm_stub_cmse_branch_thumb_only); | |
4831 | BFD_ASSERT (removed_sg_veneer || (nrelocs != 0 && nrelocs <= MAXRELOCS)); | |
c820be07 | 4832 | |
48229727 | 4833 | for (i = 0; i < nrelocs; i++) |
8d9d9490 TP |
4834 | { |
4835 | Elf_Internal_Rela rel; | |
4836 | bfd_boolean unresolved_reloc; | |
4837 | char *error_message; | |
4838 | bfd_vma points_to = | |
4839 | sym_value + template_sequence[stub_reloc_idx[i]].reloc_addend; | |
4840 | ||
4841 | rel.r_offset = stub_entry->stub_offset + stub_reloc_offset[i]; | |
4842 | rel.r_info = ELF32_R_INFO (0, | |
4843 | template_sequence[stub_reloc_idx[i]].r_type); | |
4844 | rel.r_addend = 0; | |
4845 | ||
4846 | if (stub_entry->stub_type == arm_stub_a8_veneer_b_cond && i == 0) | |
4847 | /* The first relocation in the elf32_arm_stub_a8_veneer_b_cond[] | |
4848 | template should refer back to the instruction after the original | |
4849 | branch. We use target_section as Cortex-A8 erratum workaround stubs | |
4850 | are only generated when both source and target are in the same | |
4851 | section. */ | |
4852 | points_to = stub_entry->target_section->output_section->vma | |
4853 | + stub_entry->target_section->output_offset | |
4854 | + stub_entry->source_value; | |
4855 | ||
4856 | elf32_arm_final_link_relocate (elf32_arm_howto_from_type | |
4857 | (template_sequence[stub_reloc_idx[i]].r_type), | |
4858 | stub_bfd, info->output_bfd, stub_sec, stub_sec->contents, &rel, | |
4859 | points_to, info, stub_entry->target_section, "", STT_FUNC, | |
4860 | stub_entry->branch_type, | |
4861 | (struct elf_link_hash_entry *) stub_entry->h, &unresolved_reloc, | |
4862 | &error_message); | |
4863 | } | |
906e58ca NC |
4864 | |
4865 | return TRUE; | |
48229727 | 4866 | #undef MAXRELOCS |
906e58ca NC |
4867 | } |
4868 | ||
48229727 JB |
4869 | /* Calculate the template, template size and instruction size for a stub. |
4870 | Return value is the instruction size. */ | |
906e58ca | 4871 | |
48229727 JB |
4872 | static unsigned int |
4873 | find_stub_size_and_template (enum elf32_arm_stub_type stub_type, | |
4874 | const insn_sequence **stub_template, | |
4875 | int *stub_template_size) | |
906e58ca | 4876 | { |
d3ce72d0 | 4877 | const insn_sequence *template_sequence = NULL; |
48229727 JB |
4878 | int template_size = 0, i; |
4879 | unsigned int size; | |
906e58ca | 4880 | |
d3ce72d0 | 4881 | template_sequence = stub_definitions[stub_type].template_sequence; |
2a229407 AM |
4882 | if (stub_template) |
4883 | *stub_template = template_sequence; | |
4884 | ||
48229727 | 4885 | template_size = stub_definitions[stub_type].template_size; |
2a229407 AM |
4886 | if (stub_template_size) |
4887 | *stub_template_size = template_size; | |
906e58ca NC |
4888 | |
4889 | size = 0; | |
461a49ca DJ |
4890 | for (i = 0; i < template_size; i++) |
4891 | { | |
d3ce72d0 | 4892 | switch (template_sequence[i].type) |
461a49ca DJ |
4893 | { |
4894 | case THUMB16_TYPE: | |
4895 | size += 2; | |
4896 | break; | |
4897 | ||
4898 | case ARM_TYPE: | |
48229727 | 4899 | case THUMB32_TYPE: |
461a49ca DJ |
4900 | case DATA_TYPE: |
4901 | size += 4; | |
4902 | break; | |
4903 | ||
4904 | default: | |
4905 | BFD_FAIL (); | |
2a229407 | 4906 | return 0; |
461a49ca DJ |
4907 | } |
4908 | } | |
4909 | ||
48229727 JB |
4910 | return size; |
4911 | } | |
4912 | ||
4913 | /* As above, but don't actually build the stub. Just bump offset so | |
4914 | we know stub section sizes. */ | |
4915 | ||
4916 | static bfd_boolean | |
4917 | arm_size_one_stub (struct bfd_hash_entry *gen_entry, | |
c7e2358a | 4918 | void *in_arg ATTRIBUTE_UNUSED) |
48229727 JB |
4919 | { |
4920 | struct elf32_arm_stub_hash_entry *stub_entry; | |
d3ce72d0 | 4921 | const insn_sequence *template_sequence; |
48229727 JB |
4922 | int template_size, size; |
4923 | ||
4924 | /* Massage our args to the form they really have. */ | |
4925 | stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry; | |
48229727 JB |
4926 | |
4927 | BFD_ASSERT((stub_entry->stub_type > arm_stub_none) | |
4928 | && stub_entry->stub_type < ARRAY_SIZE(stub_definitions)); | |
4929 | ||
d3ce72d0 | 4930 | size = find_stub_size_and_template (stub_entry->stub_type, &template_sequence, |
48229727 JB |
4931 | &template_size); |
4932 | ||
0955507f TP |
4933 | /* Initialized to -1. Null size indicates an empty slot full of zeros. */ |
4934 | if (stub_entry->stub_template_size) | |
4935 | { | |
4936 | stub_entry->stub_size = size; | |
4937 | stub_entry->stub_template = template_sequence; | |
4938 | stub_entry->stub_template_size = template_size; | |
4939 | } | |
4940 | ||
4941 | /* Already accounted for. */ | |
4942 | if (stub_entry->stub_offset != (bfd_vma) -1) | |
4943 | return TRUE; | |
461a49ca | 4944 | |
906e58ca NC |
4945 | size = (size + 7) & ~7; |
4946 | stub_entry->stub_sec->size += size; | |
461a49ca | 4947 | |
906e58ca NC |
4948 | return TRUE; |
4949 | } | |
4950 | ||
4951 | /* External entry points for sizing and building linker stubs. */ | |
4952 | ||
4953 | /* Set up various things so that we can make a list of input sections | |
4954 | for each output section included in the link. Returns -1 on error, | |
4955 | 0 when no stubs will be needed, and 1 on success. */ | |
4956 | ||
4957 | int | |
4958 | elf32_arm_setup_section_lists (bfd *output_bfd, | |
4959 | struct bfd_link_info *info) | |
4960 | { | |
4961 | bfd *input_bfd; | |
4962 | unsigned int bfd_count; | |
7292b3ac | 4963 | unsigned int top_id, top_index; |
906e58ca NC |
4964 | asection *section; |
4965 | asection **input_list, **list; | |
4966 | bfd_size_type amt; | |
4967 | struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info); | |
4968 | ||
4dfe6ac6 NC |
4969 | if (htab == NULL) |
4970 | return 0; | |
906e58ca NC |
4971 | if (! is_elf_hash_table (htab)) |
4972 | return 0; | |
4973 | ||
4974 | /* Count the number of input BFDs and find the top input section id. */ | |
4975 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; | |
4976 | input_bfd != NULL; | |
c72f2fb2 | 4977 | input_bfd = input_bfd->link.next) |
906e58ca NC |
4978 | { |
4979 | bfd_count += 1; | |
4980 | for (section = input_bfd->sections; | |
4981 | section != NULL; | |
4982 | section = section->next) | |
4983 | { | |
4984 | if (top_id < section->id) | |
4985 | top_id = section->id; | |
4986 | } | |
4987 | } | |
4988 | htab->bfd_count = bfd_count; | |
4989 | ||
4990 | amt = sizeof (struct map_stub) * (top_id + 1); | |
21d799b5 | 4991 | htab->stub_group = (struct map_stub *) bfd_zmalloc (amt); |
906e58ca NC |
4992 | if (htab->stub_group == NULL) |
4993 | return -1; | |
fe33d2fa | 4994 | htab->top_id = top_id; |
906e58ca NC |
4995 | |
4996 | /* We can't use output_bfd->section_count here to find the top output | |
4997 | section index as some sections may have been removed, and | |
4998 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
4999 | for (section = output_bfd->sections, top_index = 0; | |
5000 | section != NULL; | |
5001 | section = section->next) | |
5002 | { | |
5003 | if (top_index < section->index) | |
5004 | top_index = section->index; | |
5005 | } | |
5006 | ||
5007 | htab->top_index = top_index; | |
5008 | amt = sizeof (asection *) * (top_index + 1); | |
21d799b5 | 5009 | input_list = (asection **) bfd_malloc (amt); |
906e58ca NC |
5010 | htab->input_list = input_list; |
5011 | if (input_list == NULL) | |
5012 | return -1; | |
5013 | ||
5014 | /* For sections we aren't interested in, mark their entries with a | |
5015 | value we can check later. */ | |
5016 | list = input_list + top_index; | |
5017 | do | |
5018 | *list = bfd_abs_section_ptr; | |
5019 | while (list-- != input_list); | |
5020 | ||
5021 | for (section = output_bfd->sections; | |
5022 | section != NULL; | |
5023 | section = section->next) | |
5024 | { | |
5025 | if ((section->flags & SEC_CODE) != 0) | |
5026 | input_list[section->index] = NULL; | |
5027 | } | |
5028 | ||
5029 | return 1; | |
5030 | } | |
5031 | ||
5032 | /* The linker repeatedly calls this function for each input section, | |
5033 | in the order that input sections are linked into output sections. | |
5034 | Build lists of input sections to determine groupings between which | |
5035 | we may insert linker stubs. */ | |
5036 | ||
5037 | void | |
5038 | elf32_arm_next_input_section (struct bfd_link_info *info, | |
5039 | asection *isec) | |
5040 | { | |
5041 | struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info); | |
5042 | ||
4dfe6ac6 NC |
5043 | if (htab == NULL) |
5044 | return; | |
5045 | ||
906e58ca NC |
5046 | if (isec->output_section->index <= htab->top_index) |
5047 | { | |
5048 | asection **list = htab->input_list + isec->output_section->index; | |
5049 | ||
a7470592 | 5050 | if (*list != bfd_abs_section_ptr && (isec->flags & SEC_CODE) != 0) |
906e58ca NC |
5051 | { |
5052 | /* Steal the link_sec pointer for our list. */ | |
5053 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) | |
5054 | /* This happens to make the list in reverse order, | |
07d72278 | 5055 | which we reverse later. */ |
906e58ca NC |
5056 | PREV_SEC (isec) = *list; |
5057 | *list = isec; | |
5058 | } | |
5059 | } | |
5060 | } | |
5061 | ||
5062 | /* See whether we can group stub sections together. Grouping stub | |
5063 | sections may result in fewer stubs. More importantly, we need to | |
07d72278 | 5064 | put all .init* and .fini* stubs at the end of the .init or |
906e58ca NC |
5065 | .fini output sections respectively, because glibc splits the |
5066 | _init and _fini functions into multiple parts. Putting a stub in | |
5067 | the middle of a function is not a good idea. */ | |
5068 | ||
5069 | static void | |
5070 | group_sections (struct elf32_arm_link_hash_table *htab, | |
5071 | bfd_size_type stub_group_size, | |
07d72278 | 5072 | bfd_boolean stubs_always_after_branch) |
906e58ca | 5073 | { |
07d72278 | 5074 | asection **list = htab->input_list; |
906e58ca NC |
5075 | |
5076 | do | |
5077 | { | |
5078 | asection *tail = *list; | |
07d72278 | 5079 | asection *head; |
906e58ca NC |
5080 | |
5081 | if (tail == bfd_abs_section_ptr) | |
5082 | continue; | |
5083 | ||
07d72278 DJ |
5084 | /* Reverse the list: we must avoid placing stubs at the |
5085 | beginning of the section because the beginning of the text | |
5086 | section may be required for an interrupt vector in bare metal | |
5087 | code. */ | |
5088 | #define NEXT_SEC PREV_SEC | |
e780aef2 CL |
5089 | head = NULL; |
5090 | while (tail != NULL) | |
99059e56 RM |
5091 | { |
5092 | /* Pop from tail. */ | |
5093 | asection *item = tail; | |
5094 | tail = PREV_SEC (item); | |
e780aef2 | 5095 | |
99059e56 RM |
5096 | /* Push on head. */ |
5097 | NEXT_SEC (item) = head; | |
5098 | head = item; | |
5099 | } | |
07d72278 DJ |
5100 | |
5101 | while (head != NULL) | |
906e58ca NC |
5102 | { |
5103 | asection *curr; | |
07d72278 | 5104 | asection *next; |
e780aef2 CL |
5105 | bfd_vma stub_group_start = head->output_offset; |
5106 | bfd_vma end_of_next; | |
906e58ca | 5107 | |
07d72278 | 5108 | curr = head; |
e780aef2 | 5109 | while (NEXT_SEC (curr) != NULL) |
8cd931b7 | 5110 | { |
e780aef2 CL |
5111 | next = NEXT_SEC (curr); |
5112 | end_of_next = next->output_offset + next->size; | |
5113 | if (end_of_next - stub_group_start >= stub_group_size) | |
5114 | /* End of NEXT is too far from start, so stop. */ | |
8cd931b7 | 5115 | break; |
e780aef2 CL |
5116 | /* Add NEXT to the group. */ |
5117 | curr = next; | |
8cd931b7 | 5118 | } |
906e58ca | 5119 | |
07d72278 | 5120 | /* OK, the size from the start to the start of CURR is less |
906e58ca | 5121 | than stub_group_size and thus can be handled by one stub |
07d72278 | 5122 | section. (Or the head section is itself larger than |
906e58ca NC |
5123 | stub_group_size, in which case we may be toast.) |
5124 | We should really be keeping track of the total size of | |
5125 | stubs added here, as stubs contribute to the final output | |
7fb9f789 | 5126 | section size. */ |
906e58ca NC |
5127 | do |
5128 | { | |
07d72278 | 5129 | next = NEXT_SEC (head); |
906e58ca | 5130 | /* Set up this stub group. */ |
07d72278 | 5131 | htab->stub_group[head->id].link_sec = curr; |
906e58ca | 5132 | } |
07d72278 | 5133 | while (head != curr && (head = next) != NULL); |
906e58ca NC |
5134 | |
5135 | /* But wait, there's more! Input sections up to stub_group_size | |
07d72278 DJ |
5136 | bytes after the stub section can be handled by it too. */ |
5137 | if (!stubs_always_after_branch) | |
906e58ca | 5138 | { |
e780aef2 CL |
5139 | stub_group_start = curr->output_offset + curr->size; |
5140 | ||
8cd931b7 | 5141 | while (next != NULL) |
906e58ca | 5142 | { |
e780aef2 CL |
5143 | end_of_next = next->output_offset + next->size; |
5144 | if (end_of_next - stub_group_start >= stub_group_size) | |
5145 | /* End of NEXT is too far from stubs, so stop. */ | |
8cd931b7 | 5146 | break; |
e780aef2 | 5147 | /* Add NEXT to the stub group. */ |
07d72278 DJ |
5148 | head = next; |
5149 | next = NEXT_SEC (head); | |
5150 | htab->stub_group[head->id].link_sec = curr; | |
906e58ca NC |
5151 | } |
5152 | } | |
07d72278 | 5153 | head = next; |
906e58ca NC |
5154 | } |
5155 | } | |
07d72278 | 5156 | while (list++ != htab->input_list + htab->top_index); |
906e58ca NC |
5157 | |
5158 | free (htab->input_list); | |
5159 | #undef PREV_SEC | |
07d72278 | 5160 | #undef NEXT_SEC |
906e58ca NC |
5161 | } |
5162 | ||
48229727 JB |
5163 | /* Comparison function for sorting/searching relocations relating to Cortex-A8 |
5164 | erratum fix. */ | |
5165 | ||
5166 | static int | |
5167 | a8_reloc_compare (const void *a, const void *b) | |
5168 | { | |
21d799b5 NC |
5169 | const struct a8_erratum_reloc *ra = (const struct a8_erratum_reloc *) a; |
5170 | const struct a8_erratum_reloc *rb = (const struct a8_erratum_reloc *) b; | |
48229727 JB |
5171 | |
5172 | if (ra->from < rb->from) | |
5173 | return -1; | |
5174 | else if (ra->from > rb->from) | |
5175 | return 1; | |
5176 | else | |
5177 | return 0; | |
5178 | } | |
5179 | ||
5180 | static struct elf_link_hash_entry *find_thumb_glue (struct bfd_link_info *, | |
5181 | const char *, char **); | |
5182 | ||
5183 | /* Helper function to scan code for sequences which might trigger the Cortex-A8 | |
5184 | branch/TLB erratum. Fill in the table described by A8_FIXES_P, | |
81694485 | 5185 | NUM_A8_FIXES_P, A8_FIX_TABLE_SIZE_P. Returns true if an error occurs, false |
48229727 JB |
5186 | otherwise. */ |
5187 | ||
81694485 NC |
5188 | static bfd_boolean |
5189 | cortex_a8_erratum_scan (bfd *input_bfd, | |
5190 | struct bfd_link_info *info, | |
48229727 JB |
5191 | struct a8_erratum_fix **a8_fixes_p, |
5192 | unsigned int *num_a8_fixes_p, | |
5193 | unsigned int *a8_fix_table_size_p, | |
5194 | struct a8_erratum_reloc *a8_relocs, | |
eb7c4339 NS |
5195 | unsigned int num_a8_relocs, |
5196 | unsigned prev_num_a8_fixes, | |
5197 | bfd_boolean *stub_changed_p) | |
48229727 JB |
5198 | { |
5199 | asection *section; | |
5200 | struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info); | |
5201 | struct a8_erratum_fix *a8_fixes = *a8_fixes_p; | |
5202 | unsigned int num_a8_fixes = *num_a8_fixes_p; | |
5203 | unsigned int a8_fix_table_size = *a8_fix_table_size_p; | |
5204 | ||
4dfe6ac6 NC |
5205 | if (htab == NULL) |
5206 | return FALSE; | |
5207 | ||
48229727 JB |
5208 | for (section = input_bfd->sections; |
5209 | section != NULL; | |
5210 | section = section->next) | |
5211 | { | |
5212 | bfd_byte *contents = NULL; | |
5213 | struct _arm_elf_section_data *sec_data; | |
5214 | unsigned int span; | |
5215 | bfd_vma base_vma; | |
5216 | ||
5217 | if (elf_section_type (section) != SHT_PROGBITS | |
99059e56 RM |
5218 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 |
5219 | || (section->flags & SEC_EXCLUDE) != 0 | |
5220 | || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) | |
5221 | || (section->output_section == bfd_abs_section_ptr)) | |
5222 | continue; | |
48229727 JB |
5223 | |
5224 | base_vma = section->output_section->vma + section->output_offset; | |
5225 | ||
5226 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
99059e56 | 5227 | contents = elf_section_data (section)->this_hdr.contents; |
48229727 | 5228 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) |
99059e56 | 5229 | return TRUE; |
48229727 JB |
5230 | |
5231 | sec_data = elf32_arm_section_data (section); | |
5232 | ||
5233 | for (span = 0; span < sec_data->mapcount; span++) | |
99059e56 RM |
5234 | { |
5235 | unsigned int span_start = sec_data->map[span].vma; | |
5236 | unsigned int span_end = (span == sec_data->mapcount - 1) | |
5237 | ? section->size : sec_data->map[span + 1].vma; | |
5238 | unsigned int i; | |
5239 | char span_type = sec_data->map[span].type; | |
5240 | bfd_boolean last_was_32bit = FALSE, last_was_branch = FALSE; | |
5241 | ||
5242 | if (span_type != 't') | |
5243 | continue; | |
5244 | ||
5245 | /* Span is entirely within a single 4KB region: skip scanning. */ | |
5246 | if (((base_vma + span_start) & ~0xfff) | |
48229727 | 5247 | == ((base_vma + span_end) & ~0xfff)) |
99059e56 RM |
5248 | continue; |
5249 | ||
5250 | /* Scan for 32-bit Thumb-2 branches which span two 4K regions, where: | |
5251 | ||
5252 | * The opcode is BLX.W, BL.W, B.W, Bcc.W | |
5253 | * The branch target is in the same 4KB region as the | |
5254 | first half of the branch. | |
5255 | * The instruction before the branch is a 32-bit | |
5256 | length non-branch instruction. */ | |
5257 | for (i = span_start; i < span_end;) | |
5258 | { | |
5259 | unsigned int insn = bfd_getl16 (&contents[i]); | |
5260 | bfd_boolean insn_32bit = FALSE, is_blx = FALSE, is_b = FALSE; | |
48229727 JB |
5261 | bfd_boolean is_bl = FALSE, is_bcc = FALSE, is_32bit_branch; |
5262 | ||
99059e56 RM |
5263 | if ((insn & 0xe000) == 0xe000 && (insn & 0x1800) != 0x0000) |
5264 | insn_32bit = TRUE; | |
48229727 JB |
5265 | |
5266 | if (insn_32bit) | |
99059e56 RM |
5267 | { |
5268 | /* Load the rest of the insn (in manual-friendly order). */ | |
5269 | insn = (insn << 16) | bfd_getl16 (&contents[i + 2]); | |
5270 | ||
5271 | /* Encoding T4: B<c>.W. */ | |
5272 | is_b = (insn & 0xf800d000) == 0xf0009000; | |
5273 | /* Encoding T1: BL<c>.W. */ | |
5274 | is_bl = (insn & 0xf800d000) == 0xf000d000; | |
5275 | /* Encoding T2: BLX<c>.W. */ | |
5276 | is_blx = (insn & 0xf800d000) == 0xf000c000; | |
48229727 JB |
5277 | /* Encoding T3: B<c>.W (not permitted in IT block). */ |
5278 | is_bcc = (insn & 0xf800d000) == 0xf0008000 | |
5279 | && (insn & 0x07f00000) != 0x03800000; | |
5280 | } | |
5281 | ||
5282 | is_32bit_branch = is_b || is_bl || is_blx || is_bcc; | |
fe33d2fa | 5283 | |
99059e56 | 5284 | if (((base_vma + i) & 0xfff) == 0xffe |
81694485 NC |
5285 | && insn_32bit |
5286 | && is_32bit_branch | |
5287 | && last_was_32bit | |
5288 | && ! last_was_branch) | |
99059e56 RM |
5289 | { |
5290 | bfd_signed_vma offset = 0; | |
5291 | bfd_boolean force_target_arm = FALSE; | |
48229727 | 5292 | bfd_boolean force_target_thumb = FALSE; |
99059e56 RM |
5293 | bfd_vma target; |
5294 | enum elf32_arm_stub_type stub_type = arm_stub_none; | |
5295 | struct a8_erratum_reloc key, *found; | |
5296 | bfd_boolean use_plt = FALSE; | |
48229727 | 5297 | |
99059e56 RM |
5298 | key.from = base_vma + i; |
5299 | found = (struct a8_erratum_reloc *) | |
5300 | bsearch (&key, a8_relocs, num_a8_relocs, | |
5301 | sizeof (struct a8_erratum_reloc), | |
5302 | &a8_reloc_compare); | |
48229727 JB |
5303 | |
5304 | if (found) | |
5305 | { | |
5306 | char *error_message = NULL; | |
5307 | struct elf_link_hash_entry *entry; | |
5308 | ||
5309 | /* We don't care about the error returned from this | |
99059e56 | 5310 | function, only if there is glue or not. */ |
48229727 JB |
5311 | entry = find_thumb_glue (info, found->sym_name, |
5312 | &error_message); | |
5313 | ||
5314 | if (entry) | |
5315 | found->non_a8_stub = TRUE; | |
5316 | ||
92750f34 | 5317 | /* Keep a simpler condition, for the sake of clarity. */ |
362d30a1 | 5318 | if (htab->root.splt != NULL && found->hash != NULL |
92750f34 DJ |
5319 | && found->hash->root.plt.offset != (bfd_vma) -1) |
5320 | use_plt = TRUE; | |
5321 | ||
5322 | if (found->r_type == R_ARM_THM_CALL) | |
5323 | { | |
35fc36a8 RS |
5324 | if (found->branch_type == ST_BRANCH_TO_ARM |
5325 | || use_plt) | |
92750f34 DJ |
5326 | force_target_arm = TRUE; |
5327 | else | |
5328 | force_target_thumb = TRUE; | |
5329 | } | |
48229727 JB |
5330 | } |
5331 | ||
99059e56 | 5332 | /* Check if we have an offending branch instruction. */ |
48229727 JB |
5333 | |
5334 | if (found && found->non_a8_stub) | |
5335 | /* We've already made a stub for this instruction, e.g. | |
5336 | it's a long branch or a Thumb->ARM stub. Assume that | |
5337 | stub will suffice to work around the A8 erratum (see | |
5338 | setting of always_after_branch above). */ | |
5339 | ; | |
99059e56 RM |
5340 | else if (is_bcc) |
5341 | { | |
5342 | offset = (insn & 0x7ff) << 1; | |
5343 | offset |= (insn & 0x3f0000) >> 4; | |
5344 | offset |= (insn & 0x2000) ? 0x40000 : 0; | |
5345 | offset |= (insn & 0x800) ? 0x80000 : 0; | |
5346 | offset |= (insn & 0x4000000) ? 0x100000 : 0; | |
5347 | if (offset & 0x100000) | |
5348 | offset |= ~ ((bfd_signed_vma) 0xfffff); | |
5349 | stub_type = arm_stub_a8_veneer_b_cond; | |
5350 | } | |
5351 | else if (is_b || is_bl || is_blx) | |
5352 | { | |
5353 | int s = (insn & 0x4000000) != 0; | |
5354 | int j1 = (insn & 0x2000) != 0; | |
5355 | int j2 = (insn & 0x800) != 0; | |
5356 | int i1 = !(j1 ^ s); | |
5357 | int i2 = !(j2 ^ s); | |
5358 | ||
5359 | offset = (insn & 0x7ff) << 1; | |
5360 | offset |= (insn & 0x3ff0000) >> 4; | |
5361 | offset |= i2 << 22; | |
5362 | offset |= i1 << 23; | |
5363 | offset |= s << 24; | |
5364 | if (offset & 0x1000000) | |
5365 | offset |= ~ ((bfd_signed_vma) 0xffffff); | |
5366 | ||
5367 | if (is_blx) | |
5368 | offset &= ~ ((bfd_signed_vma) 3); | |
5369 | ||
5370 | stub_type = is_blx ? arm_stub_a8_veneer_blx : | |
5371 | is_bl ? arm_stub_a8_veneer_bl : arm_stub_a8_veneer_b; | |
5372 | } | |
5373 | ||
5374 | if (stub_type != arm_stub_none) | |
5375 | { | |
5376 | bfd_vma pc_for_insn = base_vma + i + 4; | |
48229727 JB |
5377 | |
5378 | /* The original instruction is a BL, but the target is | |
99059e56 | 5379 | an ARM instruction. If we were not making a stub, |
48229727 JB |
5380 | the BL would have been converted to a BLX. Use the |
5381 | BLX stub instead in that case. */ | |
5382 | if (htab->use_blx && force_target_arm | |
5383 | && stub_type == arm_stub_a8_veneer_bl) | |
5384 | { | |
5385 | stub_type = arm_stub_a8_veneer_blx; | |
5386 | is_blx = TRUE; | |
5387 | is_bl = FALSE; | |
5388 | } | |
5389 | /* Conversely, if the original instruction was | |
5390 | BLX but the target is Thumb mode, use the BL | |
5391 | stub. */ | |
5392 | else if (force_target_thumb | |
5393 | && stub_type == arm_stub_a8_veneer_blx) | |
5394 | { | |
5395 | stub_type = arm_stub_a8_veneer_bl; | |
5396 | is_blx = FALSE; | |
5397 | is_bl = TRUE; | |
5398 | } | |
5399 | ||
99059e56 RM |
5400 | if (is_blx) |
5401 | pc_for_insn &= ~ ((bfd_vma) 3); | |
48229727 | 5402 | |
99059e56 RM |
5403 | /* If we found a relocation, use the proper destination, |
5404 | not the offset in the (unrelocated) instruction. | |
48229727 JB |
5405 | Note this is always done if we switched the stub type |
5406 | above. */ | |
99059e56 RM |
5407 | if (found) |
5408 | offset = | |
81694485 | 5409 | (bfd_signed_vma) (found->destination - pc_for_insn); |
48229727 | 5410 | |
99059e56 RM |
5411 | /* If the stub will use a Thumb-mode branch to a |
5412 | PLT target, redirect it to the preceding Thumb | |
5413 | entry point. */ | |
5414 | if (stub_type != arm_stub_a8_veneer_blx && use_plt) | |
5415 | offset -= PLT_THUMB_STUB_SIZE; | |
7d24e6a6 | 5416 | |
99059e56 | 5417 | target = pc_for_insn + offset; |
48229727 | 5418 | |
99059e56 RM |
5419 | /* The BLX stub is ARM-mode code. Adjust the offset to |
5420 | take the different PC value (+8 instead of +4) into | |
48229727 | 5421 | account. */ |
99059e56 RM |
5422 | if (stub_type == arm_stub_a8_veneer_blx) |
5423 | offset += 4; | |
5424 | ||
5425 | if (((base_vma + i) & ~0xfff) == (target & ~0xfff)) | |
5426 | { | |
5427 | char *stub_name = NULL; | |
5428 | ||
5429 | if (num_a8_fixes == a8_fix_table_size) | |
5430 | { | |
5431 | a8_fix_table_size *= 2; | |
5432 | a8_fixes = (struct a8_erratum_fix *) | |
5433 | bfd_realloc (a8_fixes, | |
5434 | sizeof (struct a8_erratum_fix) | |
5435 | * a8_fix_table_size); | |
5436 | } | |
48229727 | 5437 | |
eb7c4339 NS |
5438 | if (num_a8_fixes < prev_num_a8_fixes) |
5439 | { | |
5440 | /* If we're doing a subsequent scan, | |
5441 | check if we've found the same fix as | |
5442 | before, and try and reuse the stub | |
5443 | name. */ | |
5444 | stub_name = a8_fixes[num_a8_fixes].stub_name; | |
5445 | if ((a8_fixes[num_a8_fixes].section != section) | |
5446 | || (a8_fixes[num_a8_fixes].offset != i)) | |
5447 | { | |
5448 | free (stub_name); | |
5449 | stub_name = NULL; | |
5450 | *stub_changed_p = TRUE; | |
5451 | } | |
5452 | } | |
5453 | ||
5454 | if (!stub_name) | |
5455 | { | |
21d799b5 | 5456 | stub_name = (char *) bfd_malloc (8 + 1 + 8 + 1); |
eb7c4339 NS |
5457 | if (stub_name != NULL) |
5458 | sprintf (stub_name, "%x:%x", section->id, i); | |
5459 | } | |
48229727 | 5460 | |
99059e56 RM |
5461 | a8_fixes[num_a8_fixes].input_bfd = input_bfd; |
5462 | a8_fixes[num_a8_fixes].section = section; | |
5463 | a8_fixes[num_a8_fixes].offset = i; | |
8d9d9490 TP |
5464 | a8_fixes[num_a8_fixes].target_offset = |
5465 | target - base_vma; | |
99059e56 RM |
5466 | a8_fixes[num_a8_fixes].orig_insn = insn; |
5467 | a8_fixes[num_a8_fixes].stub_name = stub_name; | |
5468 | a8_fixes[num_a8_fixes].stub_type = stub_type; | |
5469 | a8_fixes[num_a8_fixes].branch_type = | |
35fc36a8 | 5470 | is_blx ? ST_BRANCH_TO_ARM : ST_BRANCH_TO_THUMB; |
48229727 | 5471 | |
99059e56 RM |
5472 | num_a8_fixes++; |
5473 | } | |
5474 | } | |
5475 | } | |
48229727 | 5476 | |
99059e56 RM |
5477 | i += insn_32bit ? 4 : 2; |
5478 | last_was_32bit = insn_32bit; | |
48229727 | 5479 | last_was_branch = is_32bit_branch; |
99059e56 RM |
5480 | } |
5481 | } | |
48229727 JB |
5482 | |
5483 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
99059e56 | 5484 | free (contents); |
48229727 | 5485 | } |
fe33d2fa | 5486 | |
48229727 JB |
5487 | *a8_fixes_p = a8_fixes; |
5488 | *num_a8_fixes_p = num_a8_fixes; | |
5489 | *a8_fix_table_size_p = a8_fix_table_size; | |
fe33d2fa | 5490 | |
81694485 | 5491 | return FALSE; |
48229727 JB |
5492 | } |
5493 | ||
b715f643 TP |
5494 | /* Create or update a stub entry depending on whether the stub can already be |
5495 | found in HTAB. The stub is identified by: | |
5496 | - its type STUB_TYPE | |
5497 | - its source branch (note that several can share the same stub) whose | |
5498 | section and relocation (if any) are given by SECTION and IRELA | |
5499 | respectively | |
5500 | - its target symbol whose input section, hash, name, value and branch type | |
5501 | are given in SYM_SEC, HASH, SYM_NAME, SYM_VALUE and BRANCH_TYPE | |
5502 | respectively | |
5503 | ||
5504 | If found, the value of the stub's target symbol is updated from SYM_VALUE | |
5505 | and *NEW_STUB is set to FALSE. Otherwise, *NEW_STUB is set to | |
5506 | TRUE and the stub entry is initialized. | |
5507 | ||
0955507f TP |
5508 | Returns the stub that was created or updated, or NULL if an error |
5509 | occurred. */ | |
b715f643 | 5510 | |
0955507f | 5511 | static struct elf32_arm_stub_hash_entry * |
b715f643 TP |
5512 | elf32_arm_create_stub (struct elf32_arm_link_hash_table *htab, |
5513 | enum elf32_arm_stub_type stub_type, asection *section, | |
5514 | Elf_Internal_Rela *irela, asection *sym_sec, | |
5515 | struct elf32_arm_link_hash_entry *hash, char *sym_name, | |
5516 | bfd_vma sym_value, enum arm_st_branch_type branch_type, | |
5517 | bfd_boolean *new_stub) | |
5518 | { | |
5519 | const asection *id_sec; | |
5520 | char *stub_name; | |
5521 | struct elf32_arm_stub_hash_entry *stub_entry; | |
5522 | unsigned int r_type; | |
4f4faa4d | 5523 | bfd_boolean sym_claimed = arm_stub_sym_claimed (stub_type); |
b715f643 TP |
5524 | |
5525 | BFD_ASSERT (stub_type != arm_stub_none); | |
5526 | *new_stub = FALSE; | |
5527 | ||
4f4faa4d TP |
5528 | if (sym_claimed) |
5529 | stub_name = sym_name; | |
5530 | else | |
5531 | { | |
5532 | BFD_ASSERT (irela); | |
5533 | BFD_ASSERT (section); | |
c2abbbeb | 5534 | BFD_ASSERT (section->id <= htab->top_id); |
b715f643 | 5535 | |
4f4faa4d TP |
5536 | /* Support for grouping stub sections. */ |
5537 | id_sec = htab->stub_group[section->id].link_sec; | |
b715f643 | 5538 | |
4f4faa4d TP |
5539 | /* Get the name of this stub. */ |
5540 | stub_name = elf32_arm_stub_name (id_sec, sym_sec, hash, irela, | |
5541 | stub_type); | |
5542 | if (!stub_name) | |
0955507f | 5543 | return NULL; |
4f4faa4d | 5544 | } |
b715f643 TP |
5545 | |
5546 | stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, stub_name, FALSE, | |
5547 | FALSE); | |
5548 | /* The proper stub has already been created, just update its value. */ | |
5549 | if (stub_entry != NULL) | |
5550 | { | |
4f4faa4d TP |
5551 | if (!sym_claimed) |
5552 | free (stub_name); | |
b715f643 | 5553 | stub_entry->target_value = sym_value; |
0955507f | 5554 | return stub_entry; |
b715f643 TP |
5555 | } |
5556 | ||
daa4adae | 5557 | stub_entry = elf32_arm_add_stub (stub_name, section, htab, stub_type); |
b715f643 TP |
5558 | if (stub_entry == NULL) |
5559 | { | |
4f4faa4d TP |
5560 | if (!sym_claimed) |
5561 | free (stub_name); | |
0955507f | 5562 | return NULL; |
b715f643 TP |
5563 | } |
5564 | ||
5565 | stub_entry->target_value = sym_value; | |
5566 | stub_entry->target_section = sym_sec; | |
5567 | stub_entry->stub_type = stub_type; | |
5568 | stub_entry->h = hash; | |
5569 | stub_entry->branch_type = branch_type; | |
5570 | ||
4f4faa4d TP |
5571 | if (sym_claimed) |
5572 | stub_entry->output_name = sym_name; | |
5573 | else | |
b715f643 | 5574 | { |
4f4faa4d TP |
5575 | if (sym_name == NULL) |
5576 | sym_name = "unnamed"; | |
5577 | stub_entry->output_name = (char *) | |
5578 | bfd_alloc (htab->stub_bfd, sizeof (THUMB2ARM_GLUE_ENTRY_NAME) | |
5579 | + strlen (sym_name)); | |
5580 | if (stub_entry->output_name == NULL) | |
5581 | { | |
5582 | free (stub_name); | |
0955507f | 5583 | return NULL; |
4f4faa4d | 5584 | } |
b715f643 | 5585 | |
4f4faa4d TP |
5586 | /* For historical reasons, use the existing names for ARM-to-Thumb and |
5587 | Thumb-to-ARM stubs. */ | |
5588 | r_type = ELF32_R_TYPE (irela->r_info); | |
5589 | if ((r_type == (unsigned int) R_ARM_THM_CALL | |
5590 | || r_type == (unsigned int) R_ARM_THM_JUMP24 | |
5591 | || r_type == (unsigned int) R_ARM_THM_JUMP19) | |
5592 | && branch_type == ST_BRANCH_TO_ARM) | |
5593 | sprintf (stub_entry->output_name, THUMB2ARM_GLUE_ENTRY_NAME, sym_name); | |
5594 | else if ((r_type == (unsigned int) R_ARM_CALL | |
5595 | || r_type == (unsigned int) R_ARM_JUMP24) | |
5596 | && branch_type == ST_BRANCH_TO_THUMB) | |
5597 | sprintf (stub_entry->output_name, ARM2THUMB_GLUE_ENTRY_NAME, sym_name); | |
5598 | else | |
5599 | sprintf (stub_entry->output_name, STUB_ENTRY_NAME, sym_name); | |
5600 | } | |
b715f643 TP |
5601 | |
5602 | *new_stub = TRUE; | |
0955507f | 5603 | return stub_entry; |
b715f643 TP |
5604 | } |
5605 | ||
4ba2ef8f TP |
5606 | /* Scan symbols in INPUT_BFD to identify secure entry functions needing a |
5607 | gateway veneer to transition from non secure to secure state and create them | |
5608 | accordingly. | |
5609 | ||
5610 | "ARMv8-M Security Extensions: Requirements on Development Tools" document | |
5611 | defines the conditions that govern Secure Gateway veneer creation for a | |
5612 | given symbol <SYM> as follows: | |
5613 | - it has function type | |
5614 | - it has non local binding | |
5615 | - a symbol named __acle_se_<SYM> (called special symbol) exists with the | |
5616 | same type, binding and value as <SYM> (called normal symbol). | |
5617 | An entry function can handle secure state transition itself in which case | |
5618 | its special symbol would have a different value from the normal symbol. | |
5619 | ||
5620 | OUT_ATTR gives the output attributes, SYM_HASHES the symbol index to hash | |
5621 | entry mapping while HTAB gives the name to hash entry mapping. | |
0955507f TP |
5622 | *CMSE_STUB_CREATED is increased by the number of secure gateway veneer |
5623 | created. | |
4ba2ef8f | 5624 | |
0955507f | 5625 | The return value gives whether a stub failed to be allocated. */ |
4ba2ef8f TP |
5626 | |
5627 | static bfd_boolean | |
5628 | cmse_scan (bfd *input_bfd, struct elf32_arm_link_hash_table *htab, | |
5629 | obj_attribute *out_attr, struct elf_link_hash_entry **sym_hashes, | |
0955507f | 5630 | int *cmse_stub_created) |
4ba2ef8f TP |
5631 | { |
5632 | const struct elf_backend_data *bed; | |
5633 | Elf_Internal_Shdr *symtab_hdr; | |
5634 | unsigned i, j, sym_count, ext_start; | |
5635 | Elf_Internal_Sym *cmse_sym, *local_syms; | |
5636 | struct elf32_arm_link_hash_entry *hash, *cmse_hash = NULL; | |
5637 | enum arm_st_branch_type branch_type; | |
5638 | char *sym_name, *lsym_name; | |
5639 | bfd_vma sym_value; | |
5640 | asection *section; | |
0955507f TP |
5641 | struct elf32_arm_stub_hash_entry *stub_entry; |
5642 | bfd_boolean is_v8m, new_stub, cmse_invalid, ret = TRUE; | |
4ba2ef8f TP |
5643 | |
5644 | bed = get_elf_backend_data (input_bfd); | |
5645 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
5646 | sym_count = symtab_hdr->sh_size / bed->s->sizeof_sym; | |
5647 | ext_start = symtab_hdr->sh_info; | |
5648 | is_v8m = (out_attr[Tag_CPU_arch].i >= TAG_CPU_ARCH_V8M_BASE | |
5649 | && out_attr[Tag_CPU_arch_profile].i == 'M'); | |
5650 | ||
5651 | local_syms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5652 | if (local_syms == NULL) | |
5653 | local_syms = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
5654 | symtab_hdr->sh_info, 0, NULL, NULL, | |
5655 | NULL); | |
5656 | if (symtab_hdr->sh_info && local_syms == NULL) | |
5657 | return FALSE; | |
5658 | ||
5659 | /* Scan symbols. */ | |
5660 | for (i = 0; i < sym_count; i++) | |
5661 | { | |
5662 | cmse_invalid = FALSE; | |
5663 | ||
5664 | if (i < ext_start) | |
5665 | { | |
5666 | cmse_sym = &local_syms[i]; | |
5667 | /* Not a special symbol. */ | |
5668 | if (!ARM_GET_SYM_CMSE_SPCL (cmse_sym->st_target_internal)) | |
5669 | continue; | |
5670 | sym_name = bfd_elf_string_from_elf_section (input_bfd, | |
5671 | symtab_hdr->sh_link, | |
5672 | cmse_sym->st_name); | |
5673 | /* Special symbol with local binding. */ | |
5674 | cmse_invalid = TRUE; | |
5675 | } | |
5676 | else | |
5677 | { | |
5678 | cmse_hash = elf32_arm_hash_entry (sym_hashes[i - ext_start]); | |
5679 | sym_name = (char *) cmse_hash->root.root.root.string; | |
5680 | ||
5681 | /* Not a special symbol. */ | |
5682 | if (!ARM_GET_SYM_CMSE_SPCL (cmse_hash->root.target_internal)) | |
5683 | continue; | |
5684 | ||
5685 | /* Special symbol has incorrect binding or type. */ | |
5686 | if ((cmse_hash->root.root.type != bfd_link_hash_defined | |
5687 | && cmse_hash->root.root.type != bfd_link_hash_defweak) | |
5688 | || cmse_hash->root.type != STT_FUNC) | |
5689 | cmse_invalid = TRUE; | |
5690 | } | |
5691 | ||
5692 | if (!is_v8m) | |
5693 | { | |
5694 | (*_bfd_error_handler) (_("%B: Special symbol `%s' only allowed for " | |
5695 | "ARMv8-M architecture or later."), | |
5696 | input_bfd, sym_name); | |
5697 | is_v8m = TRUE; /* Avoid multiple warning. */ | |
5698 | ret = FALSE; | |
5699 | } | |
5700 | ||
5701 | if (cmse_invalid) | |
5702 | { | |
5703 | (*_bfd_error_handler) (_("%B: invalid special symbol `%s'."), | |
5704 | input_bfd, sym_name); | |
5705 | (*_bfd_error_handler) (_("It must be a global or weak function " | |
5706 | "symbol.")); | |
5707 | ret = FALSE; | |
5708 | if (i < ext_start) | |
5709 | continue; | |
5710 | } | |
5711 | ||
5712 | sym_name += strlen (CMSE_PREFIX); | |
5713 | hash = (struct elf32_arm_link_hash_entry *) | |
5714 | elf_link_hash_lookup (&(htab)->root, sym_name, FALSE, FALSE, TRUE); | |
5715 | ||
5716 | /* No associated normal symbol or it is neither global nor weak. */ | |
5717 | if (!hash | |
5718 | || (hash->root.root.type != bfd_link_hash_defined | |
5719 | && hash->root.root.type != bfd_link_hash_defweak) | |
5720 | || hash->root.type != STT_FUNC) | |
5721 | { | |
5722 | /* Initialize here to avoid warning about use of possibly | |
5723 | uninitialized variable. */ | |
5724 | j = 0; | |
5725 | ||
5726 | if (!hash) | |
5727 | { | |
5728 | /* Searching for a normal symbol with local binding. */ | |
5729 | for (; j < ext_start; j++) | |
5730 | { | |
5731 | lsym_name = | |
5732 | bfd_elf_string_from_elf_section (input_bfd, | |
5733 | symtab_hdr->sh_link, | |
5734 | local_syms[j].st_name); | |
5735 | if (!strcmp (sym_name, lsym_name)) | |
5736 | break; | |
5737 | } | |
5738 | } | |
5739 | ||
5740 | if (hash || j < ext_start) | |
5741 | { | |
5742 | (*_bfd_error_handler) | |
5743 | (_("%B: invalid standard symbol `%s'."), input_bfd, sym_name); | |
5744 | (*_bfd_error_handler) | |
5745 | (_("It must be a global or weak function symbol.")); | |
5746 | } | |
5747 | else | |
5748 | (*_bfd_error_handler) | |
5749 | (_("%B: absent standard symbol `%s'."), input_bfd, sym_name); | |
5750 | ret = FALSE; | |
5751 | if (!hash) | |
5752 | continue; | |
5753 | } | |
5754 | ||
5755 | sym_value = hash->root.root.u.def.value; | |
5756 | section = hash->root.root.u.def.section; | |
5757 | ||
5758 | if (cmse_hash->root.root.u.def.section != section) | |
5759 | { | |
5760 | (*_bfd_error_handler) | |
5761 | (_("%B: `%s' and its special symbol are in different sections."), | |
5762 | input_bfd, sym_name); | |
5763 | ret = FALSE; | |
5764 | } | |
5765 | if (cmse_hash->root.root.u.def.value != sym_value) | |
5766 | continue; /* Ignore: could be an entry function starting with SG. */ | |
5767 | ||
5768 | /* If this section is a link-once section that will be discarded, then | |
5769 | don't create any stubs. */ | |
5770 | if (section->output_section == NULL) | |
5771 | { | |
5772 | (*_bfd_error_handler) | |
5773 | (_("%B: entry function `%s' not output."), input_bfd, sym_name); | |
5774 | continue; | |
5775 | } | |
5776 | ||
5777 | if (hash->root.size == 0) | |
5778 | { | |
5779 | (*_bfd_error_handler) | |
5780 | (_("%B: entry function `%s' is empty."), input_bfd, sym_name); | |
5781 | ret = FALSE; | |
5782 | } | |
5783 | ||
5784 | if (!ret) | |
5785 | continue; | |
5786 | branch_type = ARM_GET_SYM_BRANCH_TYPE (hash->root.target_internal); | |
0955507f | 5787 | stub_entry |
4ba2ef8f TP |
5788 | = elf32_arm_create_stub (htab, arm_stub_cmse_branch_thumb_only, |
5789 | NULL, NULL, section, hash, sym_name, | |
5790 | sym_value, branch_type, &new_stub); | |
5791 | ||
0955507f | 5792 | if (stub_entry == NULL) |
4ba2ef8f TP |
5793 | ret = FALSE; |
5794 | else | |
5795 | { | |
5796 | BFD_ASSERT (new_stub); | |
0955507f | 5797 | (*cmse_stub_created)++; |
4ba2ef8f TP |
5798 | } |
5799 | } | |
5800 | ||
5801 | if (!symtab_hdr->contents) | |
5802 | free (local_syms); | |
5803 | return ret; | |
5804 | } | |
5805 | ||
0955507f TP |
5806 | /* Return TRUE iff a symbol identified by its linker HASH entry is a secure |
5807 | code entry function, ie can be called from non secure code without using a | |
5808 | veneer. */ | |
5809 | ||
5810 | static bfd_boolean | |
5811 | cmse_entry_fct_p (struct elf32_arm_link_hash_entry *hash) | |
5812 | { | |
42484486 | 5813 | bfd_byte contents[4]; |
0955507f TP |
5814 | uint32_t first_insn; |
5815 | asection *section; | |
5816 | file_ptr offset; | |
5817 | bfd *abfd; | |
5818 | ||
5819 | /* Defined symbol of function type. */ | |
5820 | if (hash->root.root.type != bfd_link_hash_defined | |
5821 | && hash->root.root.type != bfd_link_hash_defweak) | |
5822 | return FALSE; | |
5823 | if (hash->root.type != STT_FUNC) | |
5824 | return FALSE; | |
5825 | ||
5826 | /* Read first instruction. */ | |
5827 | section = hash->root.root.u.def.section; | |
5828 | abfd = section->owner; | |
5829 | offset = hash->root.root.u.def.value - section->vma; | |
42484486 TP |
5830 | if (!bfd_get_section_contents (abfd, section, contents, offset, |
5831 | sizeof (contents))) | |
0955507f TP |
5832 | return FALSE; |
5833 | ||
42484486 TP |
5834 | first_insn = bfd_get_32 (abfd, contents); |
5835 | ||
5836 | /* Starts by SG instruction. */ | |
0955507f TP |
5837 | return first_insn == 0xe97fe97f; |
5838 | } | |
5839 | ||
5840 | /* Output the name (in symbol table) of the veneer GEN_ENTRY if it is a new | |
5841 | secure gateway veneers (ie. the veneers was not in the input import library) | |
5842 | and there is no output import library (GEN_INFO->out_implib_bfd is NULL. */ | |
5843 | ||
5844 | static bfd_boolean | |
5845 | arm_list_new_cmse_stub (struct bfd_hash_entry *gen_entry, void *gen_info) | |
5846 | { | |
5847 | struct elf32_arm_stub_hash_entry *stub_entry; | |
5848 | struct bfd_link_info *info; | |
5849 | ||
5850 | /* Massage our args to the form they really have. */ | |
5851 | stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry; | |
5852 | info = (struct bfd_link_info *) gen_info; | |
5853 | ||
5854 | if (info->out_implib_bfd) | |
5855 | return TRUE; | |
5856 | ||
5857 | if (stub_entry->stub_type != arm_stub_cmse_branch_thumb_only) | |
5858 | return TRUE; | |
5859 | ||
5860 | if (stub_entry->stub_offset == (bfd_vma) -1) | |
5861 | (*_bfd_error_handler) (" %s", stub_entry->output_name); | |
5862 | ||
5863 | return TRUE; | |
5864 | } | |
5865 | ||
5866 | /* Set offset of each secure gateway veneers so that its address remain | |
5867 | identical to the one in the input import library referred by | |
5868 | HTAB->in_implib_bfd. A warning is issued for veneers that disappeared | |
5869 | (present in input import library but absent from the executable being | |
5870 | linked) or if new veneers appeared and there is no output import library | |
5871 | (INFO->out_implib_bfd is NULL and *CMSE_STUB_CREATED is bigger than the | |
5872 | number of secure gateway veneers found in the input import library. | |
5873 | ||
5874 | The function returns whether an error occurred. If no error occurred, | |
5875 | *CMSE_STUB_CREATED gives the number of SG veneers created by both cmse_scan | |
5876 | and this function and HTAB->new_cmse_stub_offset is set to the biggest | |
5877 | veneer observed set for new veneers to be layed out after. */ | |
5878 | ||
5879 | static bfd_boolean | |
5880 | set_cmse_veneer_addr_from_implib (struct bfd_link_info *info, | |
5881 | struct elf32_arm_link_hash_table *htab, | |
5882 | int *cmse_stub_created) | |
5883 | { | |
5884 | long symsize; | |
5885 | char *sym_name; | |
5886 | flagword flags; | |
5887 | long i, symcount; | |
5888 | bfd *in_implib_bfd; | |
5889 | asection *stub_out_sec; | |
5890 | bfd_boolean ret = TRUE; | |
5891 | Elf_Internal_Sym *intsym; | |
5892 | const char *out_sec_name; | |
5893 | bfd_size_type cmse_stub_size; | |
5894 | asymbol **sympp = NULL, *sym; | |
5895 | struct elf32_arm_link_hash_entry *hash; | |
5896 | const insn_sequence *cmse_stub_template; | |
5897 | struct elf32_arm_stub_hash_entry *stub_entry; | |
5898 | int cmse_stub_template_size, new_cmse_stubs_created = *cmse_stub_created; | |
5899 | bfd_vma veneer_value, stub_offset, next_cmse_stub_offset; | |
5900 | bfd_vma cmse_stub_array_start = (bfd_vma) -1, cmse_stub_sec_vma = 0; | |
5901 | ||
5902 | /* No input secure gateway import library. */ | |
5903 | if (!htab->in_implib_bfd) | |
5904 | return TRUE; | |
5905 | ||
5906 | in_implib_bfd = htab->in_implib_bfd; | |
5907 | if (!htab->cmse_implib) | |
5908 | { | |
5909 | (*_bfd_error_handler) (_("%B: --in-implib only supported for Secure " | |
5910 | "Gateway import libraries."), in_implib_bfd); | |
5911 | return FALSE; | |
5912 | } | |
5913 | ||
5914 | /* Get symbol table size. */ | |
5915 | symsize = bfd_get_symtab_upper_bound (in_implib_bfd); | |
5916 | if (symsize < 0) | |
5917 | return FALSE; | |
5918 | ||
5919 | /* Read in the input secure gateway import library's symbol table. */ | |
5920 | sympp = (asymbol **) xmalloc (symsize); | |
5921 | symcount = bfd_canonicalize_symtab (in_implib_bfd, sympp); | |
5922 | if (symcount < 0) | |
5923 | { | |
5924 | ret = FALSE; | |
5925 | goto free_sym_buf; | |
5926 | } | |
5927 | ||
5928 | htab->new_cmse_stub_offset = 0; | |
5929 | cmse_stub_size = | |
5930 | find_stub_size_and_template (arm_stub_cmse_branch_thumb_only, | |
5931 | &cmse_stub_template, | |
5932 | &cmse_stub_template_size); | |
5933 | out_sec_name = | |
5934 | arm_dedicated_stub_output_section_name (arm_stub_cmse_branch_thumb_only); | |
5935 | stub_out_sec = | |
5936 | bfd_get_section_by_name (htab->obfd, out_sec_name); | |
5937 | if (stub_out_sec != NULL) | |
5938 | cmse_stub_sec_vma = stub_out_sec->vma; | |
5939 | ||
5940 | /* Set addresses of veneers mentionned in input secure gateway import | |
5941 | library's symbol table. */ | |
5942 | for (i = 0; i < symcount; i++) | |
5943 | { | |
5944 | sym = sympp[i]; | |
5945 | flags = sym->flags; | |
5946 | sym_name = (char *) bfd_asymbol_name (sym); | |
5947 | intsym = &((elf_symbol_type *) sym)->internal_elf_sym; | |
5948 | ||
5949 | if (sym->section != bfd_abs_section_ptr | |
5950 | || !(flags & (BSF_GLOBAL | BSF_WEAK)) | |
5951 | || (flags & BSF_FUNCTION) != BSF_FUNCTION | |
5952 | || (ARM_GET_SYM_BRANCH_TYPE (intsym->st_target_internal) | |
5953 | != ST_BRANCH_TO_THUMB)) | |
5954 | { | |
5955 | (*_bfd_error_handler) (_("%B: invalid import library entry: `%s'."), | |
5956 | in_implib_bfd, sym_name); | |
5957 | (*_bfd_error_handler) (_("Symbol should be absolute, global and " | |
5958 | "refer to Thumb functions.")); | |
5959 | ret = FALSE; | |
5960 | continue; | |
5961 | } | |
5962 | ||
5963 | veneer_value = bfd_asymbol_value (sym); | |
5964 | stub_offset = veneer_value - cmse_stub_sec_vma; | |
5965 | stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, sym_name, | |
5966 | FALSE, FALSE); | |
5967 | hash = (struct elf32_arm_link_hash_entry *) | |
5968 | elf_link_hash_lookup (&(htab)->root, sym_name, FALSE, FALSE, TRUE); | |
5969 | ||
5970 | /* Stub entry should have been created by cmse_scan or the symbol be of | |
5971 | a secure function callable from non secure code. */ | |
5972 | if (!stub_entry && !hash) | |
5973 | { | |
5974 | bfd_boolean new_stub; | |
5975 | ||
5976 | (*_bfd_error_handler) | |
5977 | (_("Entry function `%s' disappeared from secure code."), sym_name); | |
5978 | hash = (struct elf32_arm_link_hash_entry *) | |
5979 | elf_link_hash_lookup (&(htab)->root, sym_name, TRUE, TRUE, TRUE); | |
5980 | stub_entry | |
5981 | = elf32_arm_create_stub (htab, arm_stub_cmse_branch_thumb_only, | |
5982 | NULL, NULL, bfd_abs_section_ptr, hash, | |
5983 | sym_name, veneer_value, | |
5984 | ST_BRANCH_TO_THUMB, &new_stub); | |
5985 | if (stub_entry == NULL) | |
5986 | ret = FALSE; | |
5987 | else | |
5988 | { | |
5989 | BFD_ASSERT (new_stub); | |
5990 | new_cmse_stubs_created++; | |
5991 | (*cmse_stub_created)++; | |
5992 | } | |
5993 | stub_entry->stub_template_size = stub_entry->stub_size = 0; | |
5994 | stub_entry->stub_offset = stub_offset; | |
5995 | } | |
5996 | /* Symbol found is not callable from non secure code. */ | |
5997 | else if (!stub_entry) | |
5998 | { | |
5999 | if (!cmse_entry_fct_p (hash)) | |
6000 | { | |
6001 | (*_bfd_error_handler) (_("`%s' refers to a non entry function."), | |
6002 | sym_name); | |
6003 | ret = FALSE; | |
6004 | } | |
6005 | continue; | |
6006 | } | |
6007 | else | |
6008 | { | |
6009 | /* Only stubs for SG veneers should have been created. */ | |
6010 | BFD_ASSERT (stub_entry->stub_type == arm_stub_cmse_branch_thumb_only); | |
6011 | ||
6012 | /* Check visibility hasn't changed. */ | |
6013 | if (!!(flags & BSF_GLOBAL) | |
6014 | != (hash->root.root.type == bfd_link_hash_defined)) | |
6015 | (*_bfd_error_handler) | |
6016 | (_("%B: visibility of symbol `%s' has changed."), in_implib_bfd, | |
6017 | sym_name); | |
6018 | ||
6019 | stub_entry->stub_offset = stub_offset; | |
6020 | } | |
6021 | ||
6022 | /* Size should match that of a SG veneer. */ | |
6023 | if (intsym->st_size != cmse_stub_size) | |
6024 | { | |
6025 | (*_bfd_error_handler) (_("%B: incorrect size for symbol `%s'."), | |
6026 | in_implib_bfd, sym_name); | |
6027 | ret = FALSE; | |
6028 | } | |
6029 | ||
6030 | /* Previous veneer address is before current SG veneer section. */ | |
6031 | if (veneer_value < cmse_stub_sec_vma) | |
6032 | { | |
6033 | /* Avoid offset underflow. */ | |
6034 | if (stub_entry) | |
6035 | stub_entry->stub_offset = 0; | |
6036 | stub_offset = 0; | |
6037 | ret = FALSE; | |
6038 | } | |
6039 | ||
6040 | /* Complain if stub offset not a multiple of stub size. */ | |
6041 | if (stub_offset % cmse_stub_size) | |
6042 | { | |
6043 | (*_bfd_error_handler) | |
6044 | (_("Offset of veneer for entry function `%s' not a multiple of " | |
6045 | "its size."), sym_name); | |
6046 | ret = FALSE; | |
6047 | } | |
6048 | ||
6049 | if (!ret) | |
6050 | continue; | |
6051 | ||
6052 | new_cmse_stubs_created--; | |
6053 | if (veneer_value < cmse_stub_array_start) | |
6054 | cmse_stub_array_start = veneer_value; | |
6055 | next_cmse_stub_offset = stub_offset + ((cmse_stub_size + 7) & ~7); | |
6056 | if (next_cmse_stub_offset > htab->new_cmse_stub_offset) | |
6057 | htab->new_cmse_stub_offset = next_cmse_stub_offset; | |
6058 | } | |
6059 | ||
6060 | if (!info->out_implib_bfd && new_cmse_stubs_created != 0) | |
6061 | { | |
6062 | BFD_ASSERT (new_cmse_stubs_created > 0); | |
6063 | (*_bfd_error_handler) | |
6064 | (_("new entry function(s) introduced but no output import library " | |
6065 | "specified:")); | |
6066 | bfd_hash_traverse (&htab->stub_hash_table, arm_list_new_cmse_stub, info); | |
6067 | } | |
6068 | ||
6069 | if (cmse_stub_array_start != cmse_stub_sec_vma) | |
6070 | { | |
6071 | (*_bfd_error_handler) | |
6072 | (_("Start address of `%s' is different from previous link."), | |
6073 | out_sec_name); | |
6074 | ret = FALSE; | |
6075 | } | |
6076 | ||
6077 | free_sym_buf: | |
6078 | free (sympp); | |
6079 | return ret; | |
6080 | } | |
6081 | ||
906e58ca NC |
6082 | /* Determine and set the size of the stub section for a final link. |
6083 | ||
6084 | The basic idea here is to examine all the relocations looking for | |
6085 | PC-relative calls to a target that is unreachable with a "bl" | |
6086 | instruction. */ | |
6087 | ||
6088 | bfd_boolean | |
6089 | elf32_arm_size_stubs (bfd *output_bfd, | |
6090 | bfd *stub_bfd, | |
6091 | struct bfd_link_info *info, | |
6092 | bfd_signed_vma group_size, | |
7a89b94e | 6093 | asection * (*add_stub_section) (const char *, asection *, |
6bde4c52 | 6094 | asection *, |
7a89b94e | 6095 | unsigned int), |
906e58ca NC |
6096 | void (*layout_sections_again) (void)) |
6097 | { | |
0955507f | 6098 | bfd_boolean ret = TRUE; |
4ba2ef8f | 6099 | obj_attribute *out_attr; |
0955507f | 6100 | int cmse_stub_created = 0; |
906e58ca | 6101 | bfd_size_type stub_group_size; |
4ba2ef8f | 6102 | bfd_boolean m_profile, stubs_always_after_branch, first_veneer_scan = TRUE; |
906e58ca | 6103 | struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info); |
48229727 | 6104 | struct a8_erratum_fix *a8_fixes = NULL; |
eb7c4339 | 6105 | unsigned int num_a8_fixes = 0, a8_fix_table_size = 10; |
48229727 JB |
6106 | struct a8_erratum_reloc *a8_relocs = NULL; |
6107 | unsigned int num_a8_relocs = 0, a8_reloc_table_size = 10, i; | |
6108 | ||
4dfe6ac6 NC |
6109 | if (htab == NULL) |
6110 | return FALSE; | |
6111 | ||
48229727 JB |
6112 | if (htab->fix_cortex_a8) |
6113 | { | |
21d799b5 | 6114 | a8_fixes = (struct a8_erratum_fix *) |
99059e56 | 6115 | bfd_zmalloc (sizeof (struct a8_erratum_fix) * a8_fix_table_size); |
21d799b5 | 6116 | a8_relocs = (struct a8_erratum_reloc *) |
99059e56 | 6117 | bfd_zmalloc (sizeof (struct a8_erratum_reloc) * a8_reloc_table_size); |
48229727 | 6118 | } |
906e58ca NC |
6119 | |
6120 | /* Propagate mach to stub bfd, because it may not have been | |
6121 | finalized when we created stub_bfd. */ | |
6122 | bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd), | |
6123 | bfd_get_mach (output_bfd)); | |
6124 | ||
6125 | /* Stash our params away. */ | |
6126 | htab->stub_bfd = stub_bfd; | |
6127 | htab->add_stub_section = add_stub_section; | |
6128 | htab->layout_sections_again = layout_sections_again; | |
07d72278 | 6129 | stubs_always_after_branch = group_size < 0; |
48229727 | 6130 | |
4ba2ef8f TP |
6131 | out_attr = elf_known_obj_attributes_proc (output_bfd); |
6132 | m_profile = out_attr[Tag_CPU_arch_profile].i == 'M'; | |
0955507f | 6133 | |
48229727 JB |
6134 | /* The Cortex-A8 erratum fix depends on stubs not being in the same 4K page |
6135 | as the first half of a 32-bit branch straddling two 4K pages. This is a | |
6136 | crude way of enforcing that. */ | |
6137 | if (htab->fix_cortex_a8) | |
6138 | stubs_always_after_branch = 1; | |
6139 | ||
906e58ca NC |
6140 | if (group_size < 0) |
6141 | stub_group_size = -group_size; | |
6142 | else | |
6143 | stub_group_size = group_size; | |
6144 | ||
6145 | if (stub_group_size == 1) | |
6146 | { | |
6147 | /* Default values. */ | |
6148 | /* Thumb branch range is +-4MB has to be used as the default | |
6149 | maximum size (a given section can contain both ARM and Thumb | |
6150 | code, so the worst case has to be taken into account). | |
6151 | ||
6152 | This value is 24K less than that, which allows for 2025 | |
6153 | 12-byte stubs. If we exceed that, then we will fail to link. | |
6154 | The user will have to relink with an explicit group size | |
6155 | option. */ | |
6156 | stub_group_size = 4170000; | |
6157 | } | |
6158 | ||
07d72278 | 6159 | group_sections (htab, stub_group_size, stubs_always_after_branch); |
906e58ca | 6160 | |
3ae046cc NS |
6161 | /* If we're applying the cortex A8 fix, we need to determine the |
6162 | program header size now, because we cannot change it later -- | |
6163 | that could alter section placements. Notice the A8 erratum fix | |
6164 | ends up requiring the section addresses to remain unchanged | |
6165 | modulo the page size. That's something we cannot represent | |
6166 | inside BFD, and we don't want to force the section alignment to | |
6167 | be the page size. */ | |
6168 | if (htab->fix_cortex_a8) | |
6169 | (*htab->layout_sections_again) (); | |
6170 | ||
906e58ca NC |
6171 | while (1) |
6172 | { | |
6173 | bfd *input_bfd; | |
6174 | unsigned int bfd_indx; | |
6175 | asection *stub_sec; | |
d7c5bd02 | 6176 | enum elf32_arm_stub_type stub_type; |
eb7c4339 NS |
6177 | bfd_boolean stub_changed = FALSE; |
6178 | unsigned prev_num_a8_fixes = num_a8_fixes; | |
906e58ca | 6179 | |
48229727 | 6180 | num_a8_fixes = 0; |
906e58ca NC |
6181 | for (input_bfd = info->input_bfds, bfd_indx = 0; |
6182 | input_bfd != NULL; | |
c72f2fb2 | 6183 | input_bfd = input_bfd->link.next, bfd_indx++) |
906e58ca NC |
6184 | { |
6185 | Elf_Internal_Shdr *symtab_hdr; | |
6186 | asection *section; | |
6187 | Elf_Internal_Sym *local_syms = NULL; | |
6188 | ||
99059e56 RM |
6189 | if (!is_arm_elf (input_bfd)) |
6190 | continue; | |
adbcc655 | 6191 | |
48229727 JB |
6192 | num_a8_relocs = 0; |
6193 | ||
906e58ca NC |
6194 | /* We'll need the symbol table in a second. */ |
6195 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
6196 | if (symtab_hdr->sh_info == 0) | |
6197 | continue; | |
6198 | ||
4ba2ef8f TP |
6199 | /* Limit scan of symbols to object file whose profile is |
6200 | Microcontroller to not hinder performance in the general case. */ | |
6201 | if (m_profile && first_veneer_scan) | |
6202 | { | |
6203 | struct elf_link_hash_entry **sym_hashes; | |
6204 | ||
6205 | sym_hashes = elf_sym_hashes (input_bfd); | |
6206 | if (!cmse_scan (input_bfd, htab, out_attr, sym_hashes, | |
0955507f | 6207 | &cmse_stub_created)) |
4ba2ef8f | 6208 | goto error_ret_free_local; |
0955507f TP |
6209 | |
6210 | if (cmse_stub_created != 0) | |
6211 | stub_changed = TRUE; | |
4ba2ef8f TP |
6212 | } |
6213 | ||
906e58ca NC |
6214 | /* Walk over each section attached to the input bfd. */ |
6215 | for (section = input_bfd->sections; | |
6216 | section != NULL; | |
6217 | section = section->next) | |
6218 | { | |
6219 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
6220 | ||
6221 | /* If there aren't any relocs, then there's nothing more | |
6222 | to do. */ | |
6223 | if ((section->flags & SEC_RELOC) == 0 | |
6224 | || section->reloc_count == 0 | |
6225 | || (section->flags & SEC_CODE) == 0) | |
6226 | continue; | |
6227 | ||
6228 | /* If this section is a link-once section that will be | |
6229 | discarded, then don't create any stubs. */ | |
6230 | if (section->output_section == NULL | |
6231 | || section->output_section->owner != output_bfd) | |
6232 | continue; | |
6233 | ||
6234 | /* Get the relocs. */ | |
6235 | internal_relocs | |
6236 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, | |
6237 | NULL, info->keep_memory); | |
6238 | if (internal_relocs == NULL) | |
6239 | goto error_ret_free_local; | |
6240 | ||
6241 | /* Now examine each relocation. */ | |
6242 | irela = internal_relocs; | |
6243 | irelaend = irela + section->reloc_count; | |
6244 | for (; irela < irelaend; irela++) | |
6245 | { | |
6246 | unsigned int r_type, r_indx; | |
906e58ca NC |
6247 | asection *sym_sec; |
6248 | bfd_vma sym_value; | |
6249 | bfd_vma destination; | |
6250 | struct elf32_arm_link_hash_entry *hash; | |
7413f23f | 6251 | const char *sym_name; |
34e77a92 | 6252 | unsigned char st_type; |
35fc36a8 | 6253 | enum arm_st_branch_type branch_type; |
48229727 | 6254 | bfd_boolean created_stub = FALSE; |
906e58ca NC |
6255 | |
6256 | r_type = ELF32_R_TYPE (irela->r_info); | |
6257 | r_indx = ELF32_R_SYM (irela->r_info); | |
6258 | ||
6259 | if (r_type >= (unsigned int) R_ARM_max) | |
6260 | { | |
6261 | bfd_set_error (bfd_error_bad_value); | |
6262 | error_ret_free_internal: | |
6263 | if (elf_section_data (section)->relocs == NULL) | |
6264 | free (internal_relocs); | |
15dd01b1 TP |
6265 | /* Fall through. */ |
6266 | error_ret_free_local: | |
6267 | if (local_syms != NULL | |
6268 | && (symtab_hdr->contents | |
6269 | != (unsigned char *) local_syms)) | |
6270 | free (local_syms); | |
6271 | return FALSE; | |
906e58ca | 6272 | } |
b38cadfb | 6273 | |
0855e32b NS |
6274 | hash = NULL; |
6275 | if (r_indx >= symtab_hdr->sh_info) | |
6276 | hash = elf32_arm_hash_entry | |
6277 | (elf_sym_hashes (input_bfd) | |
6278 | [r_indx - symtab_hdr->sh_info]); | |
b38cadfb | 6279 | |
0855e32b NS |
6280 | /* Only look for stubs on branch instructions, or |
6281 | non-relaxed TLSCALL */ | |
906e58ca | 6282 | if ((r_type != (unsigned int) R_ARM_CALL) |
155d87d7 CL |
6283 | && (r_type != (unsigned int) R_ARM_THM_CALL) |
6284 | && (r_type != (unsigned int) R_ARM_JUMP24) | |
48229727 JB |
6285 | && (r_type != (unsigned int) R_ARM_THM_JUMP19) |
6286 | && (r_type != (unsigned int) R_ARM_THM_XPC22) | |
155d87d7 | 6287 | && (r_type != (unsigned int) R_ARM_THM_JUMP24) |
0855e32b NS |
6288 | && (r_type != (unsigned int) R_ARM_PLT32) |
6289 | && !((r_type == (unsigned int) R_ARM_TLS_CALL | |
6290 | || r_type == (unsigned int) R_ARM_THM_TLS_CALL) | |
6291 | && r_type == elf32_arm_tls_transition | |
6292 | (info, r_type, &hash->root) | |
6293 | && ((hash ? hash->tls_type | |
6294 | : (elf32_arm_local_got_tls_type | |
6295 | (input_bfd)[r_indx])) | |
6296 | & GOT_TLS_GDESC) != 0)) | |
906e58ca NC |
6297 | continue; |
6298 | ||
6299 | /* Now determine the call target, its name, value, | |
6300 | section. */ | |
6301 | sym_sec = NULL; | |
6302 | sym_value = 0; | |
6303 | destination = 0; | |
7413f23f | 6304 | sym_name = NULL; |
b38cadfb | 6305 | |
0855e32b NS |
6306 | if (r_type == (unsigned int) R_ARM_TLS_CALL |
6307 | || r_type == (unsigned int) R_ARM_THM_TLS_CALL) | |
6308 | { | |
6309 | /* A non-relaxed TLS call. The target is the | |
6310 | plt-resident trampoline and nothing to do | |
6311 | with the symbol. */ | |
6312 | BFD_ASSERT (htab->tls_trampoline > 0); | |
6313 | sym_sec = htab->root.splt; | |
6314 | sym_value = htab->tls_trampoline; | |
6315 | hash = 0; | |
34e77a92 | 6316 | st_type = STT_FUNC; |
35fc36a8 | 6317 | branch_type = ST_BRANCH_TO_ARM; |
0855e32b NS |
6318 | } |
6319 | else if (!hash) | |
906e58ca NC |
6320 | { |
6321 | /* It's a local symbol. */ | |
6322 | Elf_Internal_Sym *sym; | |
906e58ca NC |
6323 | |
6324 | if (local_syms == NULL) | |
6325 | { | |
6326 | local_syms | |
6327 | = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6328 | if (local_syms == NULL) | |
6329 | local_syms | |
6330 | = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
6331 | symtab_hdr->sh_info, 0, | |
6332 | NULL, NULL, NULL); | |
6333 | if (local_syms == NULL) | |
6334 | goto error_ret_free_internal; | |
6335 | } | |
6336 | ||
6337 | sym = local_syms + r_indx; | |
f6d250ce TS |
6338 | if (sym->st_shndx == SHN_UNDEF) |
6339 | sym_sec = bfd_und_section_ptr; | |
6340 | else if (sym->st_shndx == SHN_ABS) | |
6341 | sym_sec = bfd_abs_section_ptr; | |
6342 | else if (sym->st_shndx == SHN_COMMON) | |
6343 | sym_sec = bfd_com_section_ptr; | |
6344 | else | |
6345 | sym_sec = | |
6346 | bfd_section_from_elf_index (input_bfd, sym->st_shndx); | |
6347 | ||
ffcb4889 NS |
6348 | if (!sym_sec) |
6349 | /* This is an undefined symbol. It can never | |
6a631e86 | 6350 | be resolved. */ |
ffcb4889 | 6351 | continue; |
fe33d2fa | 6352 | |
906e58ca NC |
6353 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) |
6354 | sym_value = sym->st_value; | |
6355 | destination = (sym_value + irela->r_addend | |
6356 | + sym_sec->output_offset | |
6357 | + sym_sec->output_section->vma); | |
34e77a92 | 6358 | st_type = ELF_ST_TYPE (sym->st_info); |
39d911fc TP |
6359 | branch_type = |
6360 | ARM_GET_SYM_BRANCH_TYPE (sym->st_target_internal); | |
7413f23f DJ |
6361 | sym_name |
6362 | = bfd_elf_string_from_elf_section (input_bfd, | |
6363 | symtab_hdr->sh_link, | |
6364 | sym->st_name); | |
906e58ca NC |
6365 | } |
6366 | else | |
6367 | { | |
6368 | /* It's an external symbol. */ | |
906e58ca NC |
6369 | while (hash->root.root.type == bfd_link_hash_indirect |
6370 | || hash->root.root.type == bfd_link_hash_warning) | |
6371 | hash = ((struct elf32_arm_link_hash_entry *) | |
6372 | hash->root.root.u.i.link); | |
6373 | ||
6374 | if (hash->root.root.type == bfd_link_hash_defined | |
6375 | || hash->root.root.type == bfd_link_hash_defweak) | |
6376 | { | |
6377 | sym_sec = hash->root.root.u.def.section; | |
6378 | sym_value = hash->root.root.u.def.value; | |
022f8312 CL |
6379 | |
6380 | struct elf32_arm_link_hash_table *globals = | |
6381 | elf32_arm_hash_table (info); | |
6382 | ||
6383 | /* For a destination in a shared library, | |
6384 | use the PLT stub as target address to | |
6385 | decide whether a branch stub is | |
6386 | needed. */ | |
4dfe6ac6 | 6387 | if (globals != NULL |
362d30a1 | 6388 | && globals->root.splt != NULL |
4dfe6ac6 | 6389 | && hash != NULL |
022f8312 CL |
6390 | && hash->root.plt.offset != (bfd_vma) -1) |
6391 | { | |
362d30a1 | 6392 | sym_sec = globals->root.splt; |
022f8312 CL |
6393 | sym_value = hash->root.plt.offset; |
6394 | if (sym_sec->output_section != NULL) | |
6395 | destination = (sym_value | |
6396 | + sym_sec->output_offset | |
6397 | + sym_sec->output_section->vma); | |
6398 | } | |
6399 | else if (sym_sec->output_section != NULL) | |
906e58ca NC |
6400 | destination = (sym_value + irela->r_addend |
6401 | + sym_sec->output_offset | |
6402 | + sym_sec->output_section->vma); | |
6403 | } | |
69c5861e CL |
6404 | else if ((hash->root.root.type == bfd_link_hash_undefined) |
6405 | || (hash->root.root.type == bfd_link_hash_undefweak)) | |
6406 | { | |
6407 | /* For a shared library, use the PLT stub as | |
6408 | target address to decide whether a long | |
6409 | branch stub is needed. | |
6410 | For absolute code, they cannot be handled. */ | |
6411 | struct elf32_arm_link_hash_table *globals = | |
6412 | elf32_arm_hash_table (info); | |
6413 | ||
4dfe6ac6 | 6414 | if (globals != NULL |
362d30a1 | 6415 | && globals->root.splt != NULL |
4dfe6ac6 | 6416 | && hash != NULL |
69c5861e CL |
6417 | && hash->root.plt.offset != (bfd_vma) -1) |
6418 | { | |
362d30a1 | 6419 | sym_sec = globals->root.splt; |
69c5861e CL |
6420 | sym_value = hash->root.plt.offset; |
6421 | if (sym_sec->output_section != NULL) | |
6422 | destination = (sym_value | |
6423 | + sym_sec->output_offset | |
6424 | + sym_sec->output_section->vma); | |
6425 | } | |
6426 | else | |
6427 | continue; | |
6428 | } | |
906e58ca NC |
6429 | else |
6430 | { | |
6431 | bfd_set_error (bfd_error_bad_value); | |
6432 | goto error_ret_free_internal; | |
6433 | } | |
34e77a92 | 6434 | st_type = hash->root.type; |
39d911fc TP |
6435 | branch_type = |
6436 | ARM_GET_SYM_BRANCH_TYPE (hash->root.target_internal); | |
7413f23f | 6437 | sym_name = hash->root.root.root.string; |
906e58ca NC |
6438 | } |
6439 | ||
48229727 | 6440 | do |
7413f23f | 6441 | { |
b715f643 | 6442 | bfd_boolean new_stub; |
0955507f | 6443 | struct elf32_arm_stub_hash_entry *stub_entry; |
b715f643 | 6444 | |
48229727 JB |
6445 | /* Determine what (if any) linker stub is needed. */ |
6446 | stub_type = arm_type_of_stub (info, section, irela, | |
34e77a92 RS |
6447 | st_type, &branch_type, |
6448 | hash, destination, sym_sec, | |
48229727 JB |
6449 | input_bfd, sym_name); |
6450 | if (stub_type == arm_stub_none) | |
6451 | break; | |
6452 | ||
48229727 JB |
6453 | /* We've either created a stub for this reloc already, |
6454 | or we are about to. */ | |
0955507f | 6455 | stub_entry = |
b715f643 TP |
6456 | elf32_arm_create_stub (htab, stub_type, section, irela, |
6457 | sym_sec, hash, | |
6458 | (char *) sym_name, sym_value, | |
6459 | branch_type, &new_stub); | |
7413f23f | 6460 | |
0955507f | 6461 | created_stub = stub_entry != NULL; |
b715f643 TP |
6462 | if (!created_stub) |
6463 | goto error_ret_free_internal; | |
6464 | else if (!new_stub) | |
6465 | break; | |
99059e56 | 6466 | else |
b715f643 | 6467 | stub_changed = TRUE; |
99059e56 RM |
6468 | } |
6469 | while (0); | |
6470 | ||
6471 | /* Look for relocations which might trigger Cortex-A8 | |
6472 | erratum. */ | |
6473 | if (htab->fix_cortex_a8 | |
6474 | && (r_type == (unsigned int) R_ARM_THM_JUMP24 | |
6475 | || r_type == (unsigned int) R_ARM_THM_JUMP19 | |
6476 | || r_type == (unsigned int) R_ARM_THM_CALL | |
6477 | || r_type == (unsigned int) R_ARM_THM_XPC22)) | |
6478 | { | |
6479 | bfd_vma from = section->output_section->vma | |
6480 | + section->output_offset | |
6481 | + irela->r_offset; | |
6482 | ||
6483 | if ((from & 0xfff) == 0xffe) | |
6484 | { | |
6485 | /* Found a candidate. Note we haven't checked the | |
6486 | destination is within 4K here: if we do so (and | |
6487 | don't create an entry in a8_relocs) we can't tell | |
6488 | that a branch should have been relocated when | |
6489 | scanning later. */ | |
6490 | if (num_a8_relocs == a8_reloc_table_size) | |
6491 | { | |
6492 | a8_reloc_table_size *= 2; | |
6493 | a8_relocs = (struct a8_erratum_reloc *) | |
6494 | bfd_realloc (a8_relocs, | |
6495 | sizeof (struct a8_erratum_reloc) | |
6496 | * a8_reloc_table_size); | |
6497 | } | |
6498 | ||
6499 | a8_relocs[num_a8_relocs].from = from; | |
6500 | a8_relocs[num_a8_relocs].destination = destination; | |
6501 | a8_relocs[num_a8_relocs].r_type = r_type; | |
6502 | a8_relocs[num_a8_relocs].branch_type = branch_type; | |
6503 | a8_relocs[num_a8_relocs].sym_name = sym_name; | |
6504 | a8_relocs[num_a8_relocs].non_a8_stub = created_stub; | |
6505 | a8_relocs[num_a8_relocs].hash = hash; | |
6506 | ||
6507 | num_a8_relocs++; | |
6508 | } | |
6509 | } | |
906e58ca NC |
6510 | } |
6511 | ||
99059e56 RM |
6512 | /* We're done with the internal relocs, free them. */ |
6513 | if (elf_section_data (section)->relocs == NULL) | |
6514 | free (internal_relocs); | |
6515 | } | |
48229727 | 6516 | |
99059e56 | 6517 | if (htab->fix_cortex_a8) |
48229727 | 6518 | { |
99059e56 RM |
6519 | /* Sort relocs which might apply to Cortex-A8 erratum. */ |
6520 | qsort (a8_relocs, num_a8_relocs, | |
eb7c4339 | 6521 | sizeof (struct a8_erratum_reloc), |
99059e56 | 6522 | &a8_reloc_compare); |
48229727 | 6523 | |
99059e56 RM |
6524 | /* Scan for branches which might trigger Cortex-A8 erratum. */ |
6525 | if (cortex_a8_erratum_scan (input_bfd, info, &a8_fixes, | |
48229727 | 6526 | &num_a8_fixes, &a8_fix_table_size, |
eb7c4339 NS |
6527 | a8_relocs, num_a8_relocs, |
6528 | prev_num_a8_fixes, &stub_changed) | |
6529 | != 0) | |
48229727 | 6530 | goto error_ret_free_local; |
5e681ec4 | 6531 | } |
7f991970 AM |
6532 | |
6533 | if (local_syms != NULL | |
6534 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6535 | { | |
6536 | if (!info->keep_memory) | |
6537 | free (local_syms); | |
6538 | else | |
6539 | symtab_hdr->contents = (unsigned char *) local_syms; | |
6540 | } | |
5e681ec4 PB |
6541 | } |
6542 | ||
0955507f TP |
6543 | if (first_veneer_scan |
6544 | && !set_cmse_veneer_addr_from_implib (info, htab, | |
6545 | &cmse_stub_created)) | |
6546 | ret = FALSE; | |
6547 | ||
eb7c4339 | 6548 | if (prev_num_a8_fixes != num_a8_fixes) |
99059e56 | 6549 | stub_changed = TRUE; |
48229727 | 6550 | |
906e58ca NC |
6551 | if (!stub_changed) |
6552 | break; | |
5e681ec4 | 6553 | |
906e58ca NC |
6554 | /* OK, we've added some stubs. Find out the new size of the |
6555 | stub sections. */ | |
6556 | for (stub_sec = htab->stub_bfd->sections; | |
6557 | stub_sec != NULL; | |
6558 | stub_sec = stub_sec->next) | |
3e6b1042 DJ |
6559 | { |
6560 | /* Ignore non-stub sections. */ | |
6561 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
6562 | continue; | |
6563 | ||
6564 | stub_sec->size = 0; | |
6565 | } | |
b34b2d70 | 6566 | |
0955507f TP |
6567 | /* Add new SG veneers after those already in the input import |
6568 | library. */ | |
6569 | for (stub_type = arm_stub_none + 1; stub_type < max_stub_type; | |
6570 | stub_type++) | |
6571 | { | |
6572 | bfd_vma *start_offset_p; | |
6573 | asection **stub_sec_p; | |
6574 | ||
6575 | start_offset_p = arm_new_stubs_start_offset_ptr (htab, stub_type); | |
6576 | stub_sec_p = arm_dedicated_stub_input_section_ptr (htab, stub_type); | |
6577 | if (start_offset_p == NULL) | |
6578 | continue; | |
6579 | ||
6580 | BFD_ASSERT (stub_sec_p != NULL); | |
6581 | if (*stub_sec_p != NULL) | |
6582 | (*stub_sec_p)->size = *start_offset_p; | |
6583 | } | |
6584 | ||
d7c5bd02 | 6585 | /* Compute stub section size, considering padding. */ |
906e58ca | 6586 | bfd_hash_traverse (&htab->stub_hash_table, arm_size_one_stub, htab); |
d7c5bd02 TP |
6587 | for (stub_type = arm_stub_none + 1; stub_type < max_stub_type; |
6588 | stub_type++) | |
6589 | { | |
6590 | int size, padding; | |
6591 | asection **stub_sec_p; | |
6592 | ||
6593 | padding = arm_dedicated_stub_section_padding (stub_type); | |
6594 | stub_sec_p = arm_dedicated_stub_input_section_ptr (htab, stub_type); | |
6595 | /* Skip if no stub input section or no stub section padding | |
6596 | required. */ | |
6597 | if ((stub_sec_p != NULL && *stub_sec_p == NULL) || padding == 0) | |
6598 | continue; | |
6599 | /* Stub section padding required but no dedicated section. */ | |
6600 | BFD_ASSERT (stub_sec_p); | |
6601 | ||
6602 | size = (*stub_sec_p)->size; | |
6603 | size = (size + padding - 1) & ~(padding - 1); | |
6604 | (*stub_sec_p)->size = size; | |
6605 | } | |
906e58ca | 6606 | |
48229727 JB |
6607 | /* Add Cortex-A8 erratum veneers to stub section sizes too. */ |
6608 | if (htab->fix_cortex_a8) | |
99059e56 RM |
6609 | for (i = 0; i < num_a8_fixes; i++) |
6610 | { | |
48229727 | 6611 | stub_sec = elf32_arm_create_or_find_stub_sec (NULL, |
daa4adae | 6612 | a8_fixes[i].section, htab, a8_fixes[i].stub_type); |
48229727 JB |
6613 | |
6614 | if (stub_sec == NULL) | |
7f991970 | 6615 | return FALSE; |
48229727 | 6616 | |
99059e56 RM |
6617 | stub_sec->size |
6618 | += find_stub_size_and_template (a8_fixes[i].stub_type, NULL, | |
6619 | NULL); | |
6620 | } | |
48229727 JB |
6621 | |
6622 | ||
906e58ca NC |
6623 | /* Ask the linker to do its stuff. */ |
6624 | (*htab->layout_sections_again) (); | |
4ba2ef8f | 6625 | first_veneer_scan = FALSE; |
ba93b8ac DJ |
6626 | } |
6627 | ||
48229727 JB |
6628 | /* Add stubs for Cortex-A8 erratum fixes now. */ |
6629 | if (htab->fix_cortex_a8) | |
6630 | { | |
6631 | for (i = 0; i < num_a8_fixes; i++) | |
99059e56 RM |
6632 | { |
6633 | struct elf32_arm_stub_hash_entry *stub_entry; | |
6634 | char *stub_name = a8_fixes[i].stub_name; | |
6635 | asection *section = a8_fixes[i].section; | |
6636 | unsigned int section_id = a8_fixes[i].section->id; | |
6637 | asection *link_sec = htab->stub_group[section_id].link_sec; | |
6638 | asection *stub_sec = htab->stub_group[section_id].stub_sec; | |
6639 | const insn_sequence *template_sequence; | |
6640 | int template_size, size = 0; | |
6641 | ||
6642 | stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
6643 | TRUE, FALSE); | |
6644 | if (stub_entry == NULL) | |
6645 | { | |
6646 | (*_bfd_error_handler) (_("%s: cannot create stub entry %s"), | |
6647 | section->owner, | |
6648 | stub_name); | |
6649 | return FALSE; | |
6650 | } | |
6651 | ||
6652 | stub_entry->stub_sec = stub_sec; | |
0955507f | 6653 | stub_entry->stub_offset = (bfd_vma) -1; |
99059e56 RM |
6654 | stub_entry->id_sec = link_sec; |
6655 | stub_entry->stub_type = a8_fixes[i].stub_type; | |
8d9d9490 | 6656 | stub_entry->source_value = a8_fixes[i].offset; |
99059e56 | 6657 | stub_entry->target_section = a8_fixes[i].section; |
8d9d9490 | 6658 | stub_entry->target_value = a8_fixes[i].target_offset; |
99059e56 | 6659 | stub_entry->orig_insn = a8_fixes[i].orig_insn; |
35fc36a8 | 6660 | stub_entry->branch_type = a8_fixes[i].branch_type; |
48229727 | 6661 | |
99059e56 RM |
6662 | size = find_stub_size_and_template (a8_fixes[i].stub_type, |
6663 | &template_sequence, | |
6664 | &template_size); | |
48229727 | 6665 | |
99059e56 RM |
6666 | stub_entry->stub_size = size; |
6667 | stub_entry->stub_template = template_sequence; | |
6668 | stub_entry->stub_template_size = template_size; | |
6669 | } | |
48229727 JB |
6670 | |
6671 | /* Stash the Cortex-A8 erratum fix array for use later in | |
99059e56 | 6672 | elf32_arm_write_section(). */ |
48229727 JB |
6673 | htab->a8_erratum_fixes = a8_fixes; |
6674 | htab->num_a8_erratum_fixes = num_a8_fixes; | |
6675 | } | |
6676 | else | |
6677 | { | |
6678 | htab->a8_erratum_fixes = NULL; | |
6679 | htab->num_a8_erratum_fixes = 0; | |
6680 | } | |
0955507f | 6681 | return ret; |
5e681ec4 PB |
6682 | } |
6683 | ||
906e58ca NC |
6684 | /* Build all the stubs associated with the current output file. The |
6685 | stubs are kept in a hash table attached to the main linker hash | |
6686 | table. We also set up the .plt entries for statically linked PIC | |
6687 | functions here. This function is called via arm_elf_finish in the | |
6688 | linker. */ | |
252b5132 | 6689 | |
906e58ca NC |
6690 | bfd_boolean |
6691 | elf32_arm_build_stubs (struct bfd_link_info *info) | |
252b5132 | 6692 | { |
906e58ca NC |
6693 | asection *stub_sec; |
6694 | struct bfd_hash_table *table; | |
0955507f | 6695 | enum elf32_arm_stub_type stub_type; |
906e58ca | 6696 | struct elf32_arm_link_hash_table *htab; |
252b5132 | 6697 | |
906e58ca | 6698 | htab = elf32_arm_hash_table (info); |
4dfe6ac6 NC |
6699 | if (htab == NULL) |
6700 | return FALSE; | |
252b5132 | 6701 | |
906e58ca NC |
6702 | for (stub_sec = htab->stub_bfd->sections; |
6703 | stub_sec != NULL; | |
6704 | stub_sec = stub_sec->next) | |
252b5132 | 6705 | { |
906e58ca NC |
6706 | bfd_size_type size; |
6707 | ||
8029a119 | 6708 | /* Ignore non-stub sections. */ |
906e58ca NC |
6709 | if (!strstr (stub_sec->name, STUB_SUFFIX)) |
6710 | continue; | |
6711 | ||
d7c5bd02 | 6712 | /* Allocate memory to hold the linker stubs. Zeroing the stub sections |
0955507f TP |
6713 | must at least be done for stub section requiring padding and for SG |
6714 | veneers to ensure that a non secure code branching to a removed SG | |
6715 | veneer causes an error. */ | |
906e58ca | 6716 | size = stub_sec->size; |
21d799b5 | 6717 | stub_sec->contents = (unsigned char *) bfd_zalloc (htab->stub_bfd, size); |
906e58ca NC |
6718 | if (stub_sec->contents == NULL && size != 0) |
6719 | return FALSE; | |
0955507f | 6720 | |
906e58ca | 6721 | stub_sec->size = 0; |
252b5132 RH |
6722 | } |
6723 | ||
0955507f TP |
6724 | /* Add new SG veneers after those already in the input import library. */ |
6725 | for (stub_type = arm_stub_none + 1; stub_type < max_stub_type; stub_type++) | |
6726 | { | |
6727 | bfd_vma *start_offset_p; | |
6728 | asection **stub_sec_p; | |
6729 | ||
6730 | start_offset_p = arm_new_stubs_start_offset_ptr (htab, stub_type); | |
6731 | stub_sec_p = arm_dedicated_stub_input_section_ptr (htab, stub_type); | |
6732 | if (start_offset_p == NULL) | |
6733 | continue; | |
6734 | ||
6735 | BFD_ASSERT (stub_sec_p != NULL); | |
6736 | if (*stub_sec_p != NULL) | |
6737 | (*stub_sec_p)->size = *start_offset_p; | |
6738 | } | |
6739 | ||
906e58ca NC |
6740 | /* Build the stubs as directed by the stub hash table. */ |
6741 | table = &htab->stub_hash_table; | |
6742 | bfd_hash_traverse (table, arm_build_one_stub, info); | |
eb7c4339 NS |
6743 | if (htab->fix_cortex_a8) |
6744 | { | |
6745 | /* Place the cortex a8 stubs last. */ | |
6746 | htab->fix_cortex_a8 = -1; | |
6747 | bfd_hash_traverse (table, arm_build_one_stub, info); | |
6748 | } | |
252b5132 | 6749 | |
906e58ca | 6750 | return TRUE; |
252b5132 RH |
6751 | } |
6752 | ||
9b485d32 NC |
6753 | /* Locate the Thumb encoded calling stub for NAME. */ |
6754 | ||
252b5132 | 6755 | static struct elf_link_hash_entry * |
57e8b36a NC |
6756 | find_thumb_glue (struct bfd_link_info *link_info, |
6757 | const char *name, | |
f2a9dd69 | 6758 | char **error_message) |
252b5132 RH |
6759 | { |
6760 | char *tmp_name; | |
6761 | struct elf_link_hash_entry *hash; | |
6762 | struct elf32_arm_link_hash_table *hash_table; | |
6763 | ||
6764 | /* We need a pointer to the armelf specific hash table. */ | |
6765 | hash_table = elf32_arm_hash_table (link_info); | |
4dfe6ac6 NC |
6766 | if (hash_table == NULL) |
6767 | return NULL; | |
252b5132 | 6768 | |
21d799b5 | 6769 | tmp_name = (char *) bfd_malloc ((bfd_size_type) strlen (name) |
99059e56 | 6770 | + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1); |
252b5132 RH |
6771 | |
6772 | BFD_ASSERT (tmp_name); | |
6773 | ||
6774 | sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); | |
6775 | ||
6776 | hash = elf_link_hash_lookup | |
b34976b6 | 6777 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 | 6778 | |
b1657152 AM |
6779 | if (hash == NULL |
6780 | && asprintf (error_message, _("unable to find THUMB glue '%s' for '%s'"), | |
6781 | tmp_name, name) == -1) | |
6782 | *error_message = (char *) bfd_errmsg (bfd_error_system_call); | |
252b5132 RH |
6783 | |
6784 | free (tmp_name); | |
6785 | ||
6786 | return hash; | |
6787 | } | |
6788 | ||
9b485d32 NC |
6789 | /* Locate the ARM encoded calling stub for NAME. */ |
6790 | ||
252b5132 | 6791 | static struct elf_link_hash_entry * |
57e8b36a NC |
6792 | find_arm_glue (struct bfd_link_info *link_info, |
6793 | const char *name, | |
f2a9dd69 | 6794 | char **error_message) |
252b5132 RH |
6795 | { |
6796 | char *tmp_name; | |
6797 | struct elf_link_hash_entry *myh; | |
6798 | struct elf32_arm_link_hash_table *hash_table; | |
6799 | ||
6800 | /* We need a pointer to the elfarm specific hash table. */ | |
6801 | hash_table = elf32_arm_hash_table (link_info); | |
4dfe6ac6 NC |
6802 | if (hash_table == NULL) |
6803 | return NULL; | |
252b5132 | 6804 | |
21d799b5 | 6805 | tmp_name = (char *) bfd_malloc ((bfd_size_type) strlen (name) |
99059e56 | 6806 | + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1); |
252b5132 RH |
6807 | |
6808 | BFD_ASSERT (tmp_name); | |
6809 | ||
6810 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); | |
6811 | ||
6812 | myh = elf_link_hash_lookup | |
b34976b6 | 6813 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 | 6814 | |
b1657152 AM |
6815 | if (myh == NULL |
6816 | && asprintf (error_message, _("unable to find ARM glue '%s' for '%s'"), | |
6817 | tmp_name, name) == -1) | |
6818 | *error_message = (char *) bfd_errmsg (bfd_error_system_call); | |
252b5132 RH |
6819 | |
6820 | free (tmp_name); | |
6821 | ||
6822 | return myh; | |
6823 | } | |
6824 | ||
8f6277f5 | 6825 | /* ARM->Thumb glue (static images): |
252b5132 RH |
6826 | |
6827 | .arm | |
6828 | __func_from_arm: | |
6829 | ldr r12, __func_addr | |
6830 | bx r12 | |
6831 | __func_addr: | |
906e58ca | 6832 | .word func @ behave as if you saw a ARM_32 reloc. |
252b5132 | 6833 | |
26079076 PB |
6834 | (v5t static images) |
6835 | .arm | |
6836 | __func_from_arm: | |
6837 | ldr pc, __func_addr | |
6838 | __func_addr: | |
906e58ca | 6839 | .word func @ behave as if you saw a ARM_32 reloc. |
26079076 | 6840 | |
8f6277f5 PB |
6841 | (relocatable images) |
6842 | .arm | |
6843 | __func_from_arm: | |
6844 | ldr r12, __func_offset | |
6845 | add r12, r12, pc | |
6846 | bx r12 | |
6847 | __func_offset: | |
8029a119 | 6848 | .word func - . */ |
8f6277f5 PB |
6849 | |
6850 | #define ARM2THUMB_STATIC_GLUE_SIZE 12 | |
252b5132 RH |
6851 | static const insn32 a2t1_ldr_insn = 0xe59fc000; |
6852 | static const insn32 a2t2_bx_r12_insn = 0xe12fff1c; | |
6853 | static const insn32 a2t3_func_addr_insn = 0x00000001; | |
6854 | ||
26079076 PB |
6855 | #define ARM2THUMB_V5_STATIC_GLUE_SIZE 8 |
6856 | static const insn32 a2t1v5_ldr_insn = 0xe51ff004; | |
6857 | static const insn32 a2t2v5_func_addr_insn = 0x00000001; | |
6858 | ||
8f6277f5 PB |
6859 | #define ARM2THUMB_PIC_GLUE_SIZE 16 |
6860 | static const insn32 a2t1p_ldr_insn = 0xe59fc004; | |
6861 | static const insn32 a2t2p_add_pc_insn = 0xe08cc00f; | |
6862 | static const insn32 a2t3p_bx_r12_insn = 0xe12fff1c; | |
6863 | ||
9b485d32 | 6864 | /* Thumb->ARM: Thumb->(non-interworking aware) ARM |
252b5132 | 6865 | |
8029a119 NC |
6866 | .thumb .thumb |
6867 | .align 2 .align 2 | |
6868 | __func_from_thumb: __func_from_thumb: | |
6869 | bx pc push {r6, lr} | |
6870 | nop ldr r6, __func_addr | |
6871 | .arm mov lr, pc | |
6872 | b func bx r6 | |
99059e56 RM |
6873 | .arm |
6874 | ;; back_to_thumb | |
6875 | ldmia r13! {r6, lr} | |
6876 | bx lr | |
6877 | __func_addr: | |
6878 | .word func */ | |
252b5132 RH |
6879 | |
6880 | #define THUMB2ARM_GLUE_SIZE 8 | |
6881 | static const insn16 t2a1_bx_pc_insn = 0x4778; | |
6882 | static const insn16 t2a2_noop_insn = 0x46c0; | |
6883 | static const insn32 t2a3_b_insn = 0xea000000; | |
6884 | ||
c7b8f16e | 6885 | #define VFP11_ERRATUM_VENEER_SIZE 8 |
a504d23a LA |
6886 | #define STM32L4XX_ERRATUM_LDM_VENEER_SIZE 16 |
6887 | #define STM32L4XX_ERRATUM_VLDM_VENEER_SIZE 24 | |
c7b8f16e | 6888 | |
845b51d6 PB |
6889 | #define ARM_BX_VENEER_SIZE 12 |
6890 | static const insn32 armbx1_tst_insn = 0xe3100001; | |
6891 | static const insn32 armbx2_moveq_insn = 0x01a0f000; | |
6892 | static const insn32 armbx3_bx_insn = 0xe12fff10; | |
6893 | ||
7e392df6 | 6894 | #ifndef ELFARM_NABI_C_INCLUDED |
8029a119 NC |
6895 | static void |
6896 | arm_allocate_glue_section_space (bfd * abfd, bfd_size_type size, const char * name) | |
252b5132 RH |
6897 | { |
6898 | asection * s; | |
8029a119 | 6899 | bfd_byte * contents; |
252b5132 | 6900 | |
8029a119 | 6901 | if (size == 0) |
3e6b1042 DJ |
6902 | { |
6903 | /* Do not include empty glue sections in the output. */ | |
6904 | if (abfd != NULL) | |
6905 | { | |
3d4d4302 | 6906 | s = bfd_get_linker_section (abfd, name); |
3e6b1042 DJ |
6907 | if (s != NULL) |
6908 | s->flags |= SEC_EXCLUDE; | |
6909 | } | |
6910 | return; | |
6911 | } | |
252b5132 | 6912 | |
8029a119 | 6913 | BFD_ASSERT (abfd != NULL); |
252b5132 | 6914 | |
3d4d4302 | 6915 | s = bfd_get_linker_section (abfd, name); |
8029a119 | 6916 | BFD_ASSERT (s != NULL); |
252b5132 | 6917 | |
21d799b5 | 6918 | contents = (bfd_byte *) bfd_alloc (abfd, size); |
252b5132 | 6919 | |
8029a119 NC |
6920 | BFD_ASSERT (s->size == size); |
6921 | s->contents = contents; | |
6922 | } | |
906e58ca | 6923 | |
8029a119 NC |
6924 | bfd_boolean |
6925 | bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info * info) | |
6926 | { | |
6927 | struct elf32_arm_link_hash_table * globals; | |
906e58ca | 6928 | |
8029a119 NC |
6929 | globals = elf32_arm_hash_table (info); |
6930 | BFD_ASSERT (globals != NULL); | |
906e58ca | 6931 | |
8029a119 NC |
6932 | arm_allocate_glue_section_space (globals->bfd_of_glue_owner, |
6933 | globals->arm_glue_size, | |
6934 | ARM2THUMB_GLUE_SECTION_NAME); | |
906e58ca | 6935 | |
8029a119 NC |
6936 | arm_allocate_glue_section_space (globals->bfd_of_glue_owner, |
6937 | globals->thumb_glue_size, | |
6938 | THUMB2ARM_GLUE_SECTION_NAME); | |
252b5132 | 6939 | |
8029a119 NC |
6940 | arm_allocate_glue_section_space (globals->bfd_of_glue_owner, |
6941 | globals->vfp11_erratum_glue_size, | |
6942 | VFP11_ERRATUM_VENEER_SECTION_NAME); | |
845b51d6 | 6943 | |
a504d23a LA |
6944 | arm_allocate_glue_section_space (globals->bfd_of_glue_owner, |
6945 | globals->stm32l4xx_erratum_glue_size, | |
6946 | STM32L4XX_ERRATUM_VENEER_SECTION_NAME); | |
6947 | ||
8029a119 NC |
6948 | arm_allocate_glue_section_space (globals->bfd_of_glue_owner, |
6949 | globals->bx_glue_size, | |
845b51d6 PB |
6950 | ARM_BX_GLUE_SECTION_NAME); |
6951 | ||
b34976b6 | 6952 | return TRUE; |
252b5132 RH |
6953 | } |
6954 | ||
a4fd1a8e | 6955 | /* Allocate space and symbols for calling a Thumb function from Arm mode. |
906e58ca NC |
6956 | returns the symbol identifying the stub. */ |
6957 | ||
a4fd1a8e | 6958 | static struct elf_link_hash_entry * |
57e8b36a NC |
6959 | record_arm_to_thumb_glue (struct bfd_link_info * link_info, |
6960 | struct elf_link_hash_entry * h) | |
252b5132 RH |
6961 | { |
6962 | const char * name = h->root.root.string; | |
63b0f745 | 6963 | asection * s; |
252b5132 RH |
6964 | char * tmp_name; |
6965 | struct elf_link_hash_entry * myh; | |
14a793b2 | 6966 | struct bfd_link_hash_entry * bh; |
252b5132 | 6967 | struct elf32_arm_link_hash_table * globals; |
dc810e39 | 6968 | bfd_vma val; |
2f475487 | 6969 | bfd_size_type size; |
252b5132 RH |
6970 | |
6971 | globals = elf32_arm_hash_table (link_info); | |
252b5132 RH |
6972 | BFD_ASSERT (globals != NULL); |
6973 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
6974 | ||
3d4d4302 | 6975 | s = bfd_get_linker_section |
252b5132 RH |
6976 | (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME); |
6977 | ||
252b5132 RH |
6978 | BFD_ASSERT (s != NULL); |
6979 | ||
21d799b5 | 6980 | tmp_name = (char *) bfd_malloc ((bfd_size_type) strlen (name) |
99059e56 | 6981 | + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1); |
252b5132 RH |
6982 | |
6983 | BFD_ASSERT (tmp_name); | |
6984 | ||
6985 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); | |
6986 | ||
6987 | myh = elf_link_hash_lookup | |
b34976b6 | 6988 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 RH |
6989 | |
6990 | if (myh != NULL) | |
6991 | { | |
9b485d32 | 6992 | /* We've already seen this guy. */ |
252b5132 | 6993 | free (tmp_name); |
a4fd1a8e | 6994 | return myh; |
252b5132 RH |
6995 | } |
6996 | ||
57e8b36a NC |
6997 | /* The only trick here is using hash_table->arm_glue_size as the value. |
6998 | Even though the section isn't allocated yet, this is where we will be | |
3dccd7b7 DJ |
6999 | putting it. The +1 on the value marks that the stub has not been |
7000 | output yet - not that it is a Thumb function. */ | |
14a793b2 | 7001 | bh = NULL; |
dc810e39 AM |
7002 | val = globals->arm_glue_size + 1; |
7003 | _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner, | |
7004 | tmp_name, BSF_GLOBAL, s, val, | |
b34976b6 | 7005 | NULL, TRUE, FALSE, &bh); |
252b5132 | 7006 | |
b7693d02 DJ |
7007 | myh = (struct elf_link_hash_entry *) bh; |
7008 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
7009 | myh->forced_local = 1; | |
7010 | ||
252b5132 RH |
7011 | free (tmp_name); |
7012 | ||
0e1862bb L |
7013 | if (bfd_link_pic (link_info) |
7014 | || globals->root.is_relocatable_executable | |
27e55c4d | 7015 | || globals->pic_veneer) |
2f475487 | 7016 | size = ARM2THUMB_PIC_GLUE_SIZE; |
26079076 PB |
7017 | else if (globals->use_blx) |
7018 | size = ARM2THUMB_V5_STATIC_GLUE_SIZE; | |
8f6277f5 | 7019 | else |
2f475487 AM |
7020 | size = ARM2THUMB_STATIC_GLUE_SIZE; |
7021 | ||
7022 | s->size += size; | |
7023 | globals->arm_glue_size += size; | |
252b5132 | 7024 | |
a4fd1a8e | 7025 | return myh; |
252b5132 RH |
7026 | } |
7027 | ||
845b51d6 PB |
7028 | /* Allocate space for ARMv4 BX veneers. */ |
7029 | ||
7030 | static void | |
7031 | record_arm_bx_glue (struct bfd_link_info * link_info, int reg) | |
7032 | { | |
7033 | asection * s; | |
7034 | struct elf32_arm_link_hash_table *globals; | |
7035 | char *tmp_name; | |
7036 | struct elf_link_hash_entry *myh; | |
7037 | struct bfd_link_hash_entry *bh; | |
7038 | bfd_vma val; | |
7039 | ||
7040 | /* BX PC does not need a veneer. */ | |
7041 | if (reg == 15) | |
7042 | return; | |
7043 | ||
7044 | globals = elf32_arm_hash_table (link_info); | |
845b51d6 PB |
7045 | BFD_ASSERT (globals != NULL); |
7046 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
7047 | ||
7048 | /* Check if this veneer has already been allocated. */ | |
7049 | if (globals->bx_glue_offset[reg]) | |
7050 | return; | |
7051 | ||
3d4d4302 | 7052 | s = bfd_get_linker_section |
845b51d6 PB |
7053 | (globals->bfd_of_glue_owner, ARM_BX_GLUE_SECTION_NAME); |
7054 | ||
7055 | BFD_ASSERT (s != NULL); | |
7056 | ||
7057 | /* Add symbol for veneer. */ | |
21d799b5 NC |
7058 | tmp_name = (char *) |
7059 | bfd_malloc ((bfd_size_type) strlen (ARM_BX_GLUE_ENTRY_NAME) + 1); | |
906e58ca | 7060 | |
845b51d6 | 7061 | BFD_ASSERT (tmp_name); |
906e58ca | 7062 | |
845b51d6 | 7063 | sprintf (tmp_name, ARM_BX_GLUE_ENTRY_NAME, reg); |
906e58ca | 7064 | |
845b51d6 PB |
7065 | myh = elf_link_hash_lookup |
7066 | (&(globals)->root, tmp_name, FALSE, FALSE, FALSE); | |
906e58ca | 7067 | |
845b51d6 | 7068 | BFD_ASSERT (myh == NULL); |
906e58ca | 7069 | |
845b51d6 PB |
7070 | bh = NULL; |
7071 | val = globals->bx_glue_size; | |
7072 | _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner, | |
99059e56 RM |
7073 | tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val, |
7074 | NULL, TRUE, FALSE, &bh); | |
845b51d6 PB |
7075 | |
7076 | myh = (struct elf_link_hash_entry *) bh; | |
7077 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
7078 | myh->forced_local = 1; | |
7079 | ||
7080 | s->size += ARM_BX_VENEER_SIZE; | |
7081 | globals->bx_glue_offset[reg] = globals->bx_glue_size | 2; | |
7082 | globals->bx_glue_size += ARM_BX_VENEER_SIZE; | |
7083 | } | |
7084 | ||
7085 | ||
c7b8f16e JB |
7086 | /* Add an entry to the code/data map for section SEC. */ |
7087 | ||
7088 | static void | |
7089 | elf32_arm_section_map_add (asection *sec, char type, bfd_vma vma) | |
7090 | { | |
7091 | struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec); | |
7092 | unsigned int newidx; | |
906e58ca | 7093 | |
c7b8f16e JB |
7094 | if (sec_data->map == NULL) |
7095 | { | |
21d799b5 | 7096 | sec_data->map = (elf32_arm_section_map *) |
99059e56 | 7097 | bfd_malloc (sizeof (elf32_arm_section_map)); |
c7b8f16e JB |
7098 | sec_data->mapcount = 0; |
7099 | sec_data->mapsize = 1; | |
7100 | } | |
906e58ca | 7101 | |
c7b8f16e | 7102 | newidx = sec_data->mapcount++; |
906e58ca | 7103 | |
c7b8f16e JB |
7104 | if (sec_data->mapcount > sec_data->mapsize) |
7105 | { | |
7106 | sec_data->mapsize *= 2; | |
21d799b5 | 7107 | sec_data->map = (elf32_arm_section_map *) |
99059e56 RM |
7108 | bfd_realloc_or_free (sec_data->map, sec_data->mapsize |
7109 | * sizeof (elf32_arm_section_map)); | |
515ef31d NC |
7110 | } |
7111 | ||
7112 | if (sec_data->map) | |
7113 | { | |
7114 | sec_data->map[newidx].vma = vma; | |
7115 | sec_data->map[newidx].type = type; | |
c7b8f16e | 7116 | } |
c7b8f16e JB |
7117 | } |
7118 | ||
7119 | ||
7120 | /* Record information about a VFP11 denorm-erratum veneer. Only ARM-mode | |
7121 | veneers are handled for now. */ | |
7122 | ||
7123 | static bfd_vma | |
7124 | record_vfp11_erratum_veneer (struct bfd_link_info *link_info, | |
99059e56 RM |
7125 | elf32_vfp11_erratum_list *branch, |
7126 | bfd *branch_bfd, | |
7127 | asection *branch_sec, | |
7128 | unsigned int offset) | |
c7b8f16e JB |
7129 | { |
7130 | asection *s; | |
7131 | struct elf32_arm_link_hash_table *hash_table; | |
7132 | char *tmp_name; | |
7133 | struct elf_link_hash_entry *myh; | |
7134 | struct bfd_link_hash_entry *bh; | |
7135 | bfd_vma val; | |
7136 | struct _arm_elf_section_data *sec_data; | |
c7b8f16e | 7137 | elf32_vfp11_erratum_list *newerr; |
906e58ca | 7138 | |
c7b8f16e | 7139 | hash_table = elf32_arm_hash_table (link_info); |
c7b8f16e JB |
7140 | BFD_ASSERT (hash_table != NULL); |
7141 | BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL); | |
906e58ca | 7142 | |
3d4d4302 | 7143 | s = bfd_get_linker_section |
c7b8f16e | 7144 | (hash_table->bfd_of_glue_owner, VFP11_ERRATUM_VENEER_SECTION_NAME); |
906e58ca | 7145 | |
c7b8f16e | 7146 | sec_data = elf32_arm_section_data (s); |
906e58ca | 7147 | |
c7b8f16e | 7148 | BFD_ASSERT (s != NULL); |
906e58ca | 7149 | |
21d799b5 | 7150 | tmp_name = (char *) bfd_malloc ((bfd_size_type) strlen |
99059e56 | 7151 | (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10); |
906e58ca | 7152 | |
c7b8f16e | 7153 | BFD_ASSERT (tmp_name); |
906e58ca | 7154 | |
c7b8f16e JB |
7155 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME, |
7156 | hash_table->num_vfp11_fixes); | |
906e58ca | 7157 | |
c7b8f16e JB |
7158 | myh = elf_link_hash_lookup |
7159 | (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE); | |
906e58ca | 7160 | |
c7b8f16e | 7161 | BFD_ASSERT (myh == NULL); |
906e58ca | 7162 | |
c7b8f16e JB |
7163 | bh = NULL; |
7164 | val = hash_table->vfp11_erratum_glue_size; | |
7165 | _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, | |
99059e56 RM |
7166 | tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val, |
7167 | NULL, TRUE, FALSE, &bh); | |
c7b8f16e JB |
7168 | |
7169 | myh = (struct elf_link_hash_entry *) bh; | |
7170 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
7171 | myh->forced_local = 1; | |
7172 | ||
7173 | /* Link veneer back to calling location. */ | |
c7e2358a | 7174 | sec_data->erratumcount += 1; |
21d799b5 NC |
7175 | newerr = (elf32_vfp11_erratum_list *) |
7176 | bfd_zmalloc (sizeof (elf32_vfp11_erratum_list)); | |
906e58ca | 7177 | |
c7b8f16e JB |
7178 | newerr->type = VFP11_ERRATUM_ARM_VENEER; |
7179 | newerr->vma = -1; | |
7180 | newerr->u.v.branch = branch; | |
7181 | newerr->u.v.id = hash_table->num_vfp11_fixes; | |
7182 | branch->u.b.veneer = newerr; | |
7183 | ||
7184 | newerr->next = sec_data->erratumlist; | |
7185 | sec_data->erratumlist = newerr; | |
7186 | ||
7187 | /* A symbol for the return from the veneer. */ | |
7188 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r", | |
7189 | hash_table->num_vfp11_fixes); | |
7190 | ||
7191 | myh = elf_link_hash_lookup | |
7192 | (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE); | |
906e58ca | 7193 | |
c7b8f16e JB |
7194 | if (myh != NULL) |
7195 | abort (); | |
7196 | ||
7197 | bh = NULL; | |
7198 | val = offset + 4; | |
7199 | _bfd_generic_link_add_one_symbol (link_info, branch_bfd, tmp_name, BSF_LOCAL, | |
7200 | branch_sec, val, NULL, TRUE, FALSE, &bh); | |
906e58ca | 7201 | |
c7b8f16e JB |
7202 | myh = (struct elf_link_hash_entry *) bh; |
7203 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
7204 | myh->forced_local = 1; | |
7205 | ||
7206 | free (tmp_name); | |
906e58ca | 7207 | |
c7b8f16e JB |
7208 | /* Generate a mapping symbol for the veneer section, and explicitly add an |
7209 | entry for that symbol to the code/data map for the section. */ | |
7210 | if (hash_table->vfp11_erratum_glue_size == 0) | |
7211 | { | |
7212 | bh = NULL; | |
7213 | /* FIXME: Creates an ARM symbol. Thumb mode will need attention if it | |
99059e56 | 7214 | ever requires this erratum fix. */ |
c7b8f16e JB |
7215 | _bfd_generic_link_add_one_symbol (link_info, |
7216 | hash_table->bfd_of_glue_owner, "$a", | |
7217 | BSF_LOCAL, s, 0, NULL, | |
99059e56 | 7218 | TRUE, FALSE, &bh); |
c7b8f16e JB |
7219 | |
7220 | myh = (struct elf_link_hash_entry *) bh; | |
7221 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
7222 | myh->forced_local = 1; | |
906e58ca | 7223 | |
c7b8f16e | 7224 | /* The elf32_arm_init_maps function only cares about symbols from input |
99059e56 RM |
7225 | BFDs. We must make a note of this generated mapping symbol |
7226 | ourselves so that code byteswapping works properly in | |
7227 | elf32_arm_write_section. */ | |
c7b8f16e JB |
7228 | elf32_arm_section_map_add (s, 'a', 0); |
7229 | } | |
906e58ca | 7230 | |
c7b8f16e JB |
7231 | s->size += VFP11_ERRATUM_VENEER_SIZE; |
7232 | hash_table->vfp11_erratum_glue_size += VFP11_ERRATUM_VENEER_SIZE; | |
7233 | hash_table->num_vfp11_fixes++; | |
906e58ca | 7234 | |
c7b8f16e JB |
7235 | /* The offset of the veneer. */ |
7236 | return val; | |
7237 | } | |
7238 | ||
a504d23a LA |
7239 | /* Record information about a STM32L4XX STM erratum veneer. Only THUMB-mode |
7240 | veneers need to be handled because used only in Cortex-M. */ | |
7241 | ||
7242 | static bfd_vma | |
7243 | record_stm32l4xx_erratum_veneer (struct bfd_link_info *link_info, | |
7244 | elf32_stm32l4xx_erratum_list *branch, | |
7245 | bfd *branch_bfd, | |
7246 | asection *branch_sec, | |
7247 | unsigned int offset, | |
7248 | bfd_size_type veneer_size) | |
7249 | { | |
7250 | asection *s; | |
7251 | struct elf32_arm_link_hash_table *hash_table; | |
7252 | char *tmp_name; | |
7253 | struct elf_link_hash_entry *myh; | |
7254 | struct bfd_link_hash_entry *bh; | |
7255 | bfd_vma val; | |
7256 | struct _arm_elf_section_data *sec_data; | |
7257 | elf32_stm32l4xx_erratum_list *newerr; | |
7258 | ||
7259 | hash_table = elf32_arm_hash_table (link_info); | |
7260 | BFD_ASSERT (hash_table != NULL); | |
7261 | BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL); | |
7262 | ||
7263 | s = bfd_get_linker_section | |
7264 | (hash_table->bfd_of_glue_owner, STM32L4XX_ERRATUM_VENEER_SECTION_NAME); | |
7265 | ||
7266 | BFD_ASSERT (s != NULL); | |
7267 | ||
7268 | sec_data = elf32_arm_section_data (s); | |
7269 | ||
7270 | tmp_name = (char *) bfd_malloc ((bfd_size_type) strlen | |
7271 | (STM32L4XX_ERRATUM_VENEER_ENTRY_NAME) + 10); | |
7272 | ||
7273 | BFD_ASSERT (tmp_name); | |
7274 | ||
7275 | sprintf (tmp_name, STM32L4XX_ERRATUM_VENEER_ENTRY_NAME, | |
7276 | hash_table->num_stm32l4xx_fixes); | |
7277 | ||
7278 | myh = elf_link_hash_lookup | |
7279 | (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE); | |
7280 | ||
7281 | BFD_ASSERT (myh == NULL); | |
7282 | ||
7283 | bh = NULL; | |
7284 | val = hash_table->stm32l4xx_erratum_glue_size; | |
7285 | _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, | |
7286 | tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val, | |
7287 | NULL, TRUE, FALSE, &bh); | |
7288 | ||
7289 | myh = (struct elf_link_hash_entry *) bh; | |
7290 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
7291 | myh->forced_local = 1; | |
7292 | ||
7293 | /* Link veneer back to calling location. */ | |
7294 | sec_data->stm32l4xx_erratumcount += 1; | |
7295 | newerr = (elf32_stm32l4xx_erratum_list *) | |
7296 | bfd_zmalloc (sizeof (elf32_stm32l4xx_erratum_list)); | |
7297 | ||
7298 | newerr->type = STM32L4XX_ERRATUM_VENEER; | |
7299 | newerr->vma = -1; | |
7300 | newerr->u.v.branch = branch; | |
7301 | newerr->u.v.id = hash_table->num_stm32l4xx_fixes; | |
7302 | branch->u.b.veneer = newerr; | |
7303 | ||
7304 | newerr->next = sec_data->stm32l4xx_erratumlist; | |
7305 | sec_data->stm32l4xx_erratumlist = newerr; | |
7306 | ||
7307 | /* A symbol for the return from the veneer. */ | |
7308 | sprintf (tmp_name, STM32L4XX_ERRATUM_VENEER_ENTRY_NAME "_r", | |
7309 | hash_table->num_stm32l4xx_fixes); | |
7310 | ||
7311 | myh = elf_link_hash_lookup | |
7312 | (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE); | |
7313 | ||
7314 | if (myh != NULL) | |
7315 | abort (); | |
7316 | ||
7317 | bh = NULL; | |
7318 | val = offset + 4; | |
7319 | _bfd_generic_link_add_one_symbol (link_info, branch_bfd, tmp_name, BSF_LOCAL, | |
7320 | branch_sec, val, NULL, TRUE, FALSE, &bh); | |
7321 | ||
7322 | myh = (struct elf_link_hash_entry *) bh; | |
7323 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
7324 | myh->forced_local = 1; | |
7325 | ||
7326 | free (tmp_name); | |
7327 | ||
7328 | /* Generate a mapping symbol for the veneer section, and explicitly add an | |
7329 | entry for that symbol to the code/data map for the section. */ | |
7330 | if (hash_table->stm32l4xx_erratum_glue_size == 0) | |
7331 | { | |
7332 | bh = NULL; | |
7333 | /* Creates a THUMB symbol since there is no other choice. */ | |
7334 | _bfd_generic_link_add_one_symbol (link_info, | |
7335 | hash_table->bfd_of_glue_owner, "$t", | |
7336 | BSF_LOCAL, s, 0, NULL, | |
7337 | TRUE, FALSE, &bh); | |
7338 | ||
7339 | myh = (struct elf_link_hash_entry *) bh; | |
7340 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
7341 | myh->forced_local = 1; | |
7342 | ||
7343 | /* The elf32_arm_init_maps function only cares about symbols from input | |
7344 | BFDs. We must make a note of this generated mapping symbol | |
7345 | ourselves so that code byteswapping works properly in | |
7346 | elf32_arm_write_section. */ | |
7347 | elf32_arm_section_map_add (s, 't', 0); | |
7348 | } | |
7349 | ||
7350 | s->size += veneer_size; | |
7351 | hash_table->stm32l4xx_erratum_glue_size += veneer_size; | |
7352 | hash_table->num_stm32l4xx_fixes++; | |
7353 | ||
7354 | /* The offset of the veneer. */ | |
7355 | return val; | |
7356 | } | |
7357 | ||
8029a119 | 7358 | #define ARM_GLUE_SECTION_FLAGS \ |
3e6b1042 DJ |
7359 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_CODE \ |
7360 | | SEC_READONLY | SEC_LINKER_CREATED) | |
8029a119 NC |
7361 | |
7362 | /* Create a fake section for use by the ARM backend of the linker. */ | |
7363 | ||
7364 | static bfd_boolean | |
7365 | arm_make_glue_section (bfd * abfd, const char * name) | |
7366 | { | |
7367 | asection * sec; | |
7368 | ||
3d4d4302 | 7369 | sec = bfd_get_linker_section (abfd, name); |
8029a119 NC |
7370 | if (sec != NULL) |
7371 | /* Already made. */ | |
7372 | return TRUE; | |
7373 | ||
3d4d4302 | 7374 | sec = bfd_make_section_anyway_with_flags (abfd, name, ARM_GLUE_SECTION_FLAGS); |
8029a119 NC |
7375 | |
7376 | if (sec == NULL | |
7377 | || !bfd_set_section_alignment (abfd, sec, 2)) | |
7378 | return FALSE; | |
7379 | ||
7380 | /* Set the gc mark to prevent the section from being removed by garbage | |
7381 | collection, despite the fact that no relocs refer to this section. */ | |
7382 | sec->gc_mark = 1; | |
7383 | ||
7384 | return TRUE; | |
7385 | } | |
7386 | ||
1db37fe6 YG |
7387 | /* Set size of .plt entries. This function is called from the |
7388 | linker scripts in ld/emultempl/{armelf}.em. */ | |
7389 | ||
7390 | void | |
7391 | bfd_elf32_arm_use_long_plt (void) | |
7392 | { | |
7393 | elf32_arm_use_long_plt_entry = TRUE; | |
7394 | } | |
7395 | ||
8afb0e02 NC |
7396 | /* Add the glue sections to ABFD. This function is called from the |
7397 | linker scripts in ld/emultempl/{armelf}.em. */ | |
9b485d32 | 7398 | |
b34976b6 | 7399 | bfd_boolean |
57e8b36a NC |
7400 | bfd_elf32_arm_add_glue_sections_to_bfd (bfd *abfd, |
7401 | struct bfd_link_info *info) | |
252b5132 | 7402 | { |
a504d23a LA |
7403 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (info); |
7404 | bfd_boolean dostm32l4xx = globals | |
7405 | && globals->stm32l4xx_fix != BFD_ARM_STM32L4XX_FIX_NONE; | |
7406 | bfd_boolean addglue; | |
7407 | ||
8afb0e02 NC |
7408 | /* If we are only performing a partial |
7409 | link do not bother adding the glue. */ | |
0e1862bb | 7410 | if (bfd_link_relocatable (info)) |
b34976b6 | 7411 | return TRUE; |
252b5132 | 7412 | |
a504d23a | 7413 | addglue = arm_make_glue_section (abfd, ARM2THUMB_GLUE_SECTION_NAME) |
8029a119 NC |
7414 | && arm_make_glue_section (abfd, THUMB2ARM_GLUE_SECTION_NAME) |
7415 | && arm_make_glue_section (abfd, VFP11_ERRATUM_VENEER_SECTION_NAME) | |
7416 | && arm_make_glue_section (abfd, ARM_BX_GLUE_SECTION_NAME); | |
a504d23a LA |
7417 | |
7418 | if (!dostm32l4xx) | |
7419 | return addglue; | |
7420 | ||
7421 | return addglue | |
7422 | && arm_make_glue_section (abfd, STM32L4XX_ERRATUM_VENEER_SECTION_NAME); | |
8afb0e02 NC |
7423 | } |
7424 | ||
daa4adae TP |
7425 | /* Mark output sections of veneers needing a dedicated one with SEC_KEEP. This |
7426 | ensures they are not marked for deletion by | |
7427 | strip_excluded_output_sections () when veneers are going to be created | |
7428 | later. Not doing so would trigger assert on empty section size in | |
7429 | lang_size_sections_1 (). */ | |
7430 | ||
7431 | void | |
7432 | bfd_elf32_arm_keep_private_stub_output_sections (struct bfd_link_info *info) | |
7433 | { | |
7434 | enum elf32_arm_stub_type stub_type; | |
7435 | ||
7436 | /* If we are only performing a partial | |
7437 | link do not bother adding the glue. */ | |
7438 | if (bfd_link_relocatable (info)) | |
7439 | return; | |
7440 | ||
7441 | for (stub_type = arm_stub_none + 1; stub_type < max_stub_type; stub_type++) | |
7442 | { | |
7443 | asection *out_sec; | |
7444 | const char *out_sec_name; | |
7445 | ||
7446 | if (!arm_dedicated_stub_output_section_required (stub_type)) | |
7447 | continue; | |
7448 | ||
7449 | out_sec_name = arm_dedicated_stub_output_section_name (stub_type); | |
7450 | out_sec = bfd_get_section_by_name (info->output_bfd, out_sec_name); | |
7451 | if (out_sec != NULL) | |
7452 | out_sec->flags |= SEC_KEEP; | |
7453 | } | |
7454 | } | |
7455 | ||
8afb0e02 NC |
7456 | /* Select a BFD to be used to hold the sections used by the glue code. |
7457 | This function is called from the linker scripts in ld/emultempl/ | |
8029a119 | 7458 | {armelf/pe}.em. */ |
8afb0e02 | 7459 | |
b34976b6 | 7460 | bfd_boolean |
57e8b36a | 7461 | bfd_elf32_arm_get_bfd_for_interworking (bfd *abfd, struct bfd_link_info *info) |
8afb0e02 NC |
7462 | { |
7463 | struct elf32_arm_link_hash_table *globals; | |
7464 | ||
7465 | /* If we are only performing a partial link | |
7466 | do not bother getting a bfd to hold the glue. */ | |
0e1862bb | 7467 | if (bfd_link_relocatable (info)) |
b34976b6 | 7468 | return TRUE; |
8afb0e02 | 7469 | |
b7693d02 DJ |
7470 | /* Make sure we don't attach the glue sections to a dynamic object. */ |
7471 | BFD_ASSERT (!(abfd->flags & DYNAMIC)); | |
7472 | ||
8afb0e02 | 7473 | globals = elf32_arm_hash_table (info); |
8afb0e02 NC |
7474 | BFD_ASSERT (globals != NULL); |
7475 | ||
7476 | if (globals->bfd_of_glue_owner != NULL) | |
b34976b6 | 7477 | return TRUE; |
8afb0e02 | 7478 | |
252b5132 RH |
7479 | /* Save the bfd for later use. */ |
7480 | globals->bfd_of_glue_owner = abfd; | |
cedb70c5 | 7481 | |
b34976b6 | 7482 | return TRUE; |
252b5132 RH |
7483 | } |
7484 | ||
906e58ca NC |
7485 | static void |
7486 | check_use_blx (struct elf32_arm_link_hash_table *globals) | |
39b41c9c | 7487 | { |
2de70689 MGD |
7488 | int cpu_arch; |
7489 | ||
b38cadfb | 7490 | cpu_arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, |
2de70689 MGD |
7491 | Tag_CPU_arch); |
7492 | ||
7493 | if (globals->fix_arm1176) | |
7494 | { | |
7495 | if (cpu_arch == TAG_CPU_ARCH_V6T2 || cpu_arch > TAG_CPU_ARCH_V6K) | |
7496 | globals->use_blx = 1; | |
7497 | } | |
7498 | else | |
7499 | { | |
7500 | if (cpu_arch > TAG_CPU_ARCH_V4T) | |
7501 | globals->use_blx = 1; | |
7502 | } | |
39b41c9c PB |
7503 | } |
7504 | ||
b34976b6 | 7505 | bfd_boolean |
57e8b36a | 7506 | bfd_elf32_arm_process_before_allocation (bfd *abfd, |
d504ffc8 | 7507 | struct bfd_link_info *link_info) |
252b5132 RH |
7508 | { |
7509 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 7510 | Elf_Internal_Rela *internal_relocs = NULL; |
252b5132 RH |
7511 | Elf_Internal_Rela *irel, *irelend; |
7512 | bfd_byte *contents = NULL; | |
252b5132 RH |
7513 | |
7514 | asection *sec; | |
7515 | struct elf32_arm_link_hash_table *globals; | |
7516 | ||
7517 | /* If we are only performing a partial link do not bother | |
7518 | to construct any glue. */ | |
0e1862bb | 7519 | if (bfd_link_relocatable (link_info)) |
b34976b6 | 7520 | return TRUE; |
252b5132 | 7521 | |
39ce1a6a NC |
7522 | /* Here we have a bfd that is to be included on the link. We have a |
7523 | hook to do reloc rummaging, before section sizes are nailed down. */ | |
252b5132 | 7524 | globals = elf32_arm_hash_table (link_info); |
252b5132 | 7525 | BFD_ASSERT (globals != NULL); |
39ce1a6a NC |
7526 | |
7527 | check_use_blx (globals); | |
252b5132 | 7528 | |
d504ffc8 | 7529 | if (globals->byteswap_code && !bfd_big_endian (abfd)) |
e489d0ae | 7530 | { |
d003868e AM |
7531 | _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."), |
7532 | abfd); | |
e489d0ae PB |
7533 | return FALSE; |
7534 | } | |
f21f3fe0 | 7535 | |
39ce1a6a NC |
7536 | /* PR 5398: If we have not decided to include any loadable sections in |
7537 | the output then we will not have a glue owner bfd. This is OK, it | |
7538 | just means that there is nothing else for us to do here. */ | |
7539 | if (globals->bfd_of_glue_owner == NULL) | |
7540 | return TRUE; | |
7541 | ||
252b5132 RH |
7542 | /* Rummage around all the relocs and map the glue vectors. */ |
7543 | sec = abfd->sections; | |
7544 | ||
7545 | if (sec == NULL) | |
b34976b6 | 7546 | return TRUE; |
252b5132 RH |
7547 | |
7548 | for (; sec != NULL; sec = sec->next) | |
7549 | { | |
7550 | if (sec->reloc_count == 0) | |
7551 | continue; | |
7552 | ||
2f475487 AM |
7553 | if ((sec->flags & SEC_EXCLUDE) != 0) |
7554 | continue; | |
7555 | ||
0ffa91dd | 7556 | symtab_hdr = & elf_symtab_hdr (abfd); |
252b5132 | 7557 | |
9b485d32 | 7558 | /* Load the relocs. */ |
6cdc0ccc | 7559 | internal_relocs |
906e58ca | 7560 | = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, FALSE); |
252b5132 | 7561 | |
6cdc0ccc AM |
7562 | if (internal_relocs == NULL) |
7563 | goto error_return; | |
252b5132 | 7564 | |
6cdc0ccc AM |
7565 | irelend = internal_relocs + sec->reloc_count; |
7566 | for (irel = internal_relocs; irel < irelend; irel++) | |
252b5132 RH |
7567 | { |
7568 | long r_type; | |
7569 | unsigned long r_index; | |
252b5132 RH |
7570 | |
7571 | struct elf_link_hash_entry *h; | |
7572 | ||
7573 | r_type = ELF32_R_TYPE (irel->r_info); | |
7574 | r_index = ELF32_R_SYM (irel->r_info); | |
7575 | ||
9b485d32 | 7576 | /* These are the only relocation types we care about. */ |
ba96a88f | 7577 | if ( r_type != R_ARM_PC24 |
845b51d6 | 7578 | && (r_type != R_ARM_V4BX || globals->fix_v4bx < 2)) |
252b5132 RH |
7579 | continue; |
7580 | ||
7581 | /* Get the section contents if we haven't done so already. */ | |
7582 | if (contents == NULL) | |
7583 | { | |
7584 | /* Get cached copy if it exists. */ | |
7585 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
7586 | contents = elf_section_data (sec)->this_hdr.contents; | |
7587 | else | |
7588 | { | |
7589 | /* Go get them off disk. */ | |
57e8b36a | 7590 | if (! bfd_malloc_and_get_section (abfd, sec, &contents)) |
252b5132 RH |
7591 | goto error_return; |
7592 | } | |
7593 | } | |
7594 | ||
845b51d6 PB |
7595 | if (r_type == R_ARM_V4BX) |
7596 | { | |
7597 | int reg; | |
7598 | ||
7599 | reg = bfd_get_32 (abfd, contents + irel->r_offset) & 0xf; | |
7600 | record_arm_bx_glue (link_info, reg); | |
7601 | continue; | |
7602 | } | |
7603 | ||
a7c10850 | 7604 | /* If the relocation is not against a symbol it cannot concern us. */ |
252b5132 RH |
7605 | h = NULL; |
7606 | ||
9b485d32 | 7607 | /* We don't care about local symbols. */ |
252b5132 RH |
7608 | if (r_index < symtab_hdr->sh_info) |
7609 | continue; | |
7610 | ||
9b485d32 | 7611 | /* This is an external symbol. */ |
252b5132 RH |
7612 | r_index -= symtab_hdr->sh_info; |
7613 | h = (struct elf_link_hash_entry *) | |
7614 | elf_sym_hashes (abfd)[r_index]; | |
7615 | ||
7616 | /* If the relocation is against a static symbol it must be within | |
7617 | the current section and so cannot be a cross ARM/Thumb relocation. */ | |
7618 | if (h == NULL) | |
7619 | continue; | |
7620 | ||
d504ffc8 DJ |
7621 | /* If the call will go through a PLT entry then we do not need |
7622 | glue. */ | |
362d30a1 | 7623 | if (globals->root.splt != NULL && h->plt.offset != (bfd_vma) -1) |
b7693d02 DJ |
7624 | continue; |
7625 | ||
252b5132 RH |
7626 | switch (r_type) |
7627 | { | |
7628 | case R_ARM_PC24: | |
7629 | /* This one is a call from arm code. We need to look up | |
99059e56 RM |
7630 | the target of the call. If it is a thumb target, we |
7631 | insert glue. */ | |
39d911fc TP |
7632 | if (ARM_GET_SYM_BRANCH_TYPE (h->target_internal) |
7633 | == ST_BRANCH_TO_THUMB) | |
252b5132 RH |
7634 | record_arm_to_thumb_glue (link_info, h); |
7635 | break; | |
7636 | ||
252b5132 | 7637 | default: |
c6596c5e | 7638 | abort (); |
252b5132 RH |
7639 | } |
7640 | } | |
6cdc0ccc AM |
7641 | |
7642 | if (contents != NULL | |
7643 | && elf_section_data (sec)->this_hdr.contents != contents) | |
7644 | free (contents); | |
7645 | contents = NULL; | |
7646 | ||
7647 | if (internal_relocs != NULL | |
7648 | && elf_section_data (sec)->relocs != internal_relocs) | |
7649 | free (internal_relocs); | |
7650 | internal_relocs = NULL; | |
252b5132 RH |
7651 | } |
7652 | ||
b34976b6 | 7653 | return TRUE; |
9a5aca8c | 7654 | |
252b5132 | 7655 | error_return: |
6cdc0ccc AM |
7656 | if (contents != NULL |
7657 | && elf_section_data (sec)->this_hdr.contents != contents) | |
7658 | free (contents); | |
7659 | if (internal_relocs != NULL | |
7660 | && elf_section_data (sec)->relocs != internal_relocs) | |
7661 | free (internal_relocs); | |
9a5aca8c | 7662 | |
b34976b6 | 7663 | return FALSE; |
252b5132 | 7664 | } |
7e392df6 | 7665 | #endif |
252b5132 | 7666 | |
eb043451 | 7667 | |
c7b8f16e JB |
7668 | /* Initialise maps of ARM/Thumb/data for input BFDs. */ |
7669 | ||
7670 | void | |
7671 | bfd_elf32_arm_init_maps (bfd *abfd) | |
7672 | { | |
7673 | Elf_Internal_Sym *isymbuf; | |
7674 | Elf_Internal_Shdr *hdr; | |
7675 | unsigned int i, localsyms; | |
7676 | ||
af1f4419 NC |
7677 | /* PR 7093: Make sure that we are dealing with an arm elf binary. */ |
7678 | if (! is_arm_elf (abfd)) | |
7679 | return; | |
7680 | ||
c7b8f16e JB |
7681 | if ((abfd->flags & DYNAMIC) != 0) |
7682 | return; | |
7683 | ||
0ffa91dd | 7684 | hdr = & elf_symtab_hdr (abfd); |
c7b8f16e JB |
7685 | localsyms = hdr->sh_info; |
7686 | ||
7687 | /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field | |
7688 | should contain the number of local symbols, which should come before any | |
7689 | global symbols. Mapping symbols are always local. */ | |
7690 | isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, | |
7691 | NULL); | |
7692 | ||
7693 | /* No internal symbols read? Skip this BFD. */ | |
7694 | if (isymbuf == NULL) | |
7695 | return; | |
7696 | ||
7697 | for (i = 0; i < localsyms; i++) | |
7698 | { | |
7699 | Elf_Internal_Sym *isym = &isymbuf[i]; | |
7700 | asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
7701 | const char *name; | |
906e58ca | 7702 | |
c7b8f16e | 7703 | if (sec != NULL |
99059e56 RM |
7704 | && ELF_ST_BIND (isym->st_info) == STB_LOCAL) |
7705 | { | |
7706 | name = bfd_elf_string_from_elf_section (abfd, | |
7707 | hdr->sh_link, isym->st_name); | |
906e58ca | 7708 | |
99059e56 | 7709 | if (bfd_is_arm_special_symbol_name (name, |
c7b8f16e | 7710 | BFD_ARM_SPECIAL_SYM_TYPE_MAP)) |
99059e56 RM |
7711 | elf32_arm_section_map_add (sec, name[1], isym->st_value); |
7712 | } | |
c7b8f16e JB |
7713 | } |
7714 | } | |
7715 | ||
7716 | ||
48229727 JB |
7717 | /* Auto-select enabling of Cortex-A8 erratum fix if the user didn't explicitly |
7718 | say what they wanted. */ | |
7719 | ||
7720 | void | |
7721 | bfd_elf32_arm_set_cortex_a8_fix (bfd *obfd, struct bfd_link_info *link_info) | |
7722 | { | |
7723 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); | |
7724 | obj_attribute *out_attr = elf_known_obj_attributes_proc (obfd); | |
7725 | ||
4dfe6ac6 NC |
7726 | if (globals == NULL) |
7727 | return; | |
7728 | ||
48229727 JB |
7729 | if (globals->fix_cortex_a8 == -1) |
7730 | { | |
7731 | /* Turn on Cortex-A8 erratum workaround for ARMv7-A. */ | |
7732 | if (out_attr[Tag_CPU_arch].i == TAG_CPU_ARCH_V7 | |
7733 | && (out_attr[Tag_CPU_arch_profile].i == 'A' | |
7734 | || out_attr[Tag_CPU_arch_profile].i == 0)) | |
7735 | globals->fix_cortex_a8 = 1; | |
7736 | else | |
7737 | globals->fix_cortex_a8 = 0; | |
7738 | } | |
7739 | } | |
7740 | ||
7741 | ||
c7b8f16e JB |
7742 | void |
7743 | bfd_elf32_arm_set_vfp11_fix (bfd *obfd, struct bfd_link_info *link_info) | |
7744 | { | |
7745 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); | |
104d59d1 | 7746 | obj_attribute *out_attr = elf_known_obj_attributes_proc (obfd); |
906e58ca | 7747 | |
4dfe6ac6 NC |
7748 | if (globals == NULL) |
7749 | return; | |
c7b8f16e JB |
7750 | /* We assume that ARMv7+ does not need the VFP11 denorm erratum fix. */ |
7751 | if (out_attr[Tag_CPU_arch].i >= TAG_CPU_ARCH_V7) | |
7752 | { | |
7753 | switch (globals->vfp11_fix) | |
99059e56 RM |
7754 | { |
7755 | case BFD_ARM_VFP11_FIX_DEFAULT: | |
7756 | case BFD_ARM_VFP11_FIX_NONE: | |
7757 | globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE; | |
7758 | break; | |
7759 | ||
7760 | default: | |
7761 | /* Give a warning, but do as the user requests anyway. */ | |
7762 | (*_bfd_error_handler) (_("%B: warning: selected VFP11 erratum " | |
7763 | "workaround is not necessary for target architecture"), obfd); | |
7764 | } | |
c7b8f16e JB |
7765 | } |
7766 | else if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_DEFAULT) | |
7767 | /* For earlier architectures, we might need the workaround, but do not | |
7768 | enable it by default. If users is running with broken hardware, they | |
7769 | must enable the erratum fix explicitly. */ | |
7770 | globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE; | |
7771 | } | |
7772 | ||
a504d23a LA |
7773 | void |
7774 | bfd_elf32_arm_set_stm32l4xx_fix (bfd *obfd, struct bfd_link_info *link_info) | |
7775 | { | |
7776 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); | |
7777 | obj_attribute *out_attr = elf_known_obj_attributes_proc (obfd); | |
7778 | ||
7779 | if (globals == NULL) | |
7780 | return; | |
7781 | ||
7782 | /* We assume only Cortex-M4 may require the fix. */ | |
7783 | if (out_attr[Tag_CPU_arch].i != TAG_CPU_ARCH_V7E_M | |
7784 | || out_attr[Tag_CPU_arch_profile].i != 'M') | |
7785 | { | |
7786 | if (globals->stm32l4xx_fix != BFD_ARM_STM32L4XX_FIX_NONE) | |
7787 | /* Give a warning, but do as the user requests anyway. */ | |
7788 | (*_bfd_error_handler) | |
7789 | (_("%B: warning: selected STM32L4XX erratum " | |
7790 | "workaround is not necessary for target architecture"), obfd); | |
7791 | } | |
7792 | } | |
c7b8f16e | 7793 | |
906e58ca NC |
7794 | enum bfd_arm_vfp11_pipe |
7795 | { | |
c7b8f16e JB |
7796 | VFP11_FMAC, |
7797 | VFP11_LS, | |
7798 | VFP11_DS, | |
7799 | VFP11_BAD | |
7800 | }; | |
7801 | ||
7802 | /* Return a VFP register number. This is encoded as RX:X for single-precision | |
7803 | registers, or X:RX for double-precision registers, where RX is the group of | |
7804 | four bits in the instruction encoding and X is the single extension bit. | |
7805 | RX and X fields are specified using their lowest (starting) bit. The return | |
7806 | value is: | |
7807 | ||
7808 | 0...31: single-precision registers s0...s31 | |
7809 | 32...63: double-precision registers d0...d31. | |
906e58ca | 7810 | |
c7b8f16e JB |
7811 | Although X should be zero for VFP11 (encoding d0...d15 only), we might |
7812 | encounter VFP3 instructions, so we allow the full range for DP registers. */ | |
906e58ca | 7813 | |
c7b8f16e JB |
7814 | static unsigned int |
7815 | bfd_arm_vfp11_regno (unsigned int insn, bfd_boolean is_double, unsigned int rx, | |
99059e56 | 7816 | unsigned int x) |
c7b8f16e JB |
7817 | { |
7818 | if (is_double) | |
7819 | return (((insn >> rx) & 0xf) | (((insn >> x) & 1) << 4)) + 32; | |
7820 | else | |
7821 | return (((insn >> rx) & 0xf) << 1) | ((insn >> x) & 1); | |
7822 | } | |
7823 | ||
7824 | /* Set bits in *WMASK according to a register number REG as encoded by | |
7825 | bfd_arm_vfp11_regno(). Ignore d16-d31. */ | |
7826 | ||
7827 | static void | |
7828 | bfd_arm_vfp11_write_mask (unsigned int *wmask, unsigned int reg) | |
7829 | { | |
7830 | if (reg < 32) | |
7831 | *wmask |= 1 << reg; | |
7832 | else if (reg < 48) | |
7833 | *wmask |= 3 << ((reg - 32) * 2); | |
7834 | } | |
7835 | ||
7836 | /* Return TRUE if WMASK overwrites anything in REGS. */ | |
7837 | ||
7838 | static bfd_boolean | |
7839 | bfd_arm_vfp11_antidependency (unsigned int wmask, int *regs, int numregs) | |
7840 | { | |
7841 | int i; | |
906e58ca | 7842 | |
c7b8f16e JB |
7843 | for (i = 0; i < numregs; i++) |
7844 | { | |
7845 | unsigned int reg = regs[i]; | |
7846 | ||
7847 | if (reg < 32 && (wmask & (1 << reg)) != 0) | |
99059e56 | 7848 | return TRUE; |
906e58ca | 7849 | |
c7b8f16e JB |
7850 | reg -= 32; |
7851 | ||
7852 | if (reg >= 16) | |
99059e56 | 7853 | continue; |
906e58ca | 7854 | |
c7b8f16e | 7855 | if ((wmask & (3 << (reg * 2))) != 0) |
99059e56 | 7856 | return TRUE; |
c7b8f16e | 7857 | } |
906e58ca | 7858 | |
c7b8f16e JB |
7859 | return FALSE; |
7860 | } | |
7861 | ||
7862 | /* In this function, we're interested in two things: finding input registers | |
7863 | for VFP data-processing instructions, and finding the set of registers which | |
7864 | arbitrary VFP instructions may write to. We use a 32-bit unsigned int to | |
7865 | hold the written set, so FLDM etc. are easy to deal with (we're only | |
7866 | interested in 32 SP registers or 16 dp registers, due to the VFP version | |
7867 | implemented by the chip in question). DP registers are marked by setting | |
7868 | both SP registers in the write mask). */ | |
7869 | ||
7870 | static enum bfd_arm_vfp11_pipe | |
7871 | bfd_arm_vfp11_insn_decode (unsigned int insn, unsigned int *destmask, int *regs, | |
99059e56 | 7872 | int *numregs) |
c7b8f16e | 7873 | { |
91d6fa6a | 7874 | enum bfd_arm_vfp11_pipe vpipe = VFP11_BAD; |
c7b8f16e JB |
7875 | bfd_boolean is_double = ((insn & 0xf00) == 0xb00) ? 1 : 0; |
7876 | ||
7877 | if ((insn & 0x0f000e10) == 0x0e000a00) /* A data-processing insn. */ | |
7878 | { | |
7879 | unsigned int pqrs; | |
7880 | unsigned int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22); | |
7881 | unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5); | |
7882 | ||
7883 | pqrs = ((insn & 0x00800000) >> 20) | |
99059e56 RM |
7884 | | ((insn & 0x00300000) >> 19) |
7885 | | ((insn & 0x00000040) >> 6); | |
c7b8f16e JB |
7886 | |
7887 | switch (pqrs) | |
99059e56 RM |
7888 | { |
7889 | case 0: /* fmac[sd]. */ | |
7890 | case 1: /* fnmac[sd]. */ | |
7891 | case 2: /* fmsc[sd]. */ | |
7892 | case 3: /* fnmsc[sd]. */ | |
7893 | vpipe = VFP11_FMAC; | |
7894 | bfd_arm_vfp11_write_mask (destmask, fd); | |
7895 | regs[0] = fd; | |
7896 | regs[1] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */ | |
7897 | regs[2] = fm; | |
7898 | *numregs = 3; | |
7899 | break; | |
7900 | ||
7901 | case 4: /* fmul[sd]. */ | |
7902 | case 5: /* fnmul[sd]. */ | |
7903 | case 6: /* fadd[sd]. */ | |
7904 | case 7: /* fsub[sd]. */ | |
7905 | vpipe = VFP11_FMAC; | |
7906 | goto vfp_binop; | |
7907 | ||
7908 | case 8: /* fdiv[sd]. */ | |
7909 | vpipe = VFP11_DS; | |
7910 | vfp_binop: | |
7911 | bfd_arm_vfp11_write_mask (destmask, fd); | |
7912 | regs[0] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */ | |
7913 | regs[1] = fm; | |
7914 | *numregs = 2; | |
7915 | break; | |
7916 | ||
7917 | case 15: /* extended opcode. */ | |
7918 | { | |
7919 | unsigned int extn = ((insn >> 15) & 0x1e) | |
7920 | | ((insn >> 7) & 1); | |
7921 | ||
7922 | switch (extn) | |
7923 | { | |
7924 | case 0: /* fcpy[sd]. */ | |
7925 | case 1: /* fabs[sd]. */ | |
7926 | case 2: /* fneg[sd]. */ | |
7927 | case 8: /* fcmp[sd]. */ | |
7928 | case 9: /* fcmpe[sd]. */ | |
7929 | case 10: /* fcmpz[sd]. */ | |
7930 | case 11: /* fcmpez[sd]. */ | |
7931 | case 16: /* fuito[sd]. */ | |
7932 | case 17: /* fsito[sd]. */ | |
7933 | case 24: /* ftoui[sd]. */ | |
7934 | case 25: /* ftouiz[sd]. */ | |
7935 | case 26: /* ftosi[sd]. */ | |
7936 | case 27: /* ftosiz[sd]. */ | |
7937 | /* These instructions will not bounce due to underflow. */ | |
7938 | *numregs = 0; | |
7939 | vpipe = VFP11_FMAC; | |
7940 | break; | |
7941 | ||
7942 | case 3: /* fsqrt[sd]. */ | |
7943 | /* fsqrt cannot underflow, but it can (perhaps) overwrite | |
7944 | registers to cause the erratum in previous instructions. */ | |
7945 | bfd_arm_vfp11_write_mask (destmask, fd); | |
7946 | vpipe = VFP11_DS; | |
7947 | break; | |
7948 | ||
7949 | case 15: /* fcvt{ds,sd}. */ | |
7950 | { | |
7951 | int rnum = 0; | |
7952 | ||
7953 | bfd_arm_vfp11_write_mask (destmask, fd); | |
c7b8f16e JB |
7954 | |
7955 | /* Only FCVTSD can underflow. */ | |
99059e56 RM |
7956 | if ((insn & 0x100) != 0) |
7957 | regs[rnum++] = fm; | |
c7b8f16e | 7958 | |
99059e56 | 7959 | *numregs = rnum; |
c7b8f16e | 7960 | |
99059e56 RM |
7961 | vpipe = VFP11_FMAC; |
7962 | } | |
7963 | break; | |
c7b8f16e | 7964 | |
99059e56 RM |
7965 | default: |
7966 | return VFP11_BAD; | |
7967 | } | |
7968 | } | |
7969 | break; | |
c7b8f16e | 7970 | |
99059e56 RM |
7971 | default: |
7972 | return VFP11_BAD; | |
7973 | } | |
c7b8f16e JB |
7974 | } |
7975 | /* Two-register transfer. */ | |
7976 | else if ((insn & 0x0fe00ed0) == 0x0c400a10) | |
7977 | { | |
7978 | unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5); | |
906e58ca | 7979 | |
c7b8f16e JB |
7980 | if ((insn & 0x100000) == 0) |
7981 | { | |
99059e56 RM |
7982 | if (is_double) |
7983 | bfd_arm_vfp11_write_mask (destmask, fm); | |
7984 | else | |
7985 | { | |
7986 | bfd_arm_vfp11_write_mask (destmask, fm); | |
7987 | bfd_arm_vfp11_write_mask (destmask, fm + 1); | |
7988 | } | |
c7b8f16e JB |
7989 | } |
7990 | ||
91d6fa6a | 7991 | vpipe = VFP11_LS; |
c7b8f16e JB |
7992 | } |
7993 | else if ((insn & 0x0e100e00) == 0x0c100a00) /* A load insn. */ | |
7994 | { | |
7995 | int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22); | |
7996 | unsigned int puw = ((insn >> 21) & 0x1) | (((insn >> 23) & 3) << 1); | |
906e58ca | 7997 | |
c7b8f16e | 7998 | switch (puw) |
99059e56 RM |
7999 | { |
8000 | case 0: /* Two-reg transfer. We should catch these above. */ | |
8001 | abort (); | |
906e58ca | 8002 | |
99059e56 RM |
8003 | case 2: /* fldm[sdx]. */ |
8004 | case 3: | |
8005 | case 5: | |
8006 | { | |
8007 | unsigned int i, offset = insn & 0xff; | |
c7b8f16e | 8008 | |
99059e56 RM |
8009 | if (is_double) |
8010 | offset >>= 1; | |
c7b8f16e | 8011 | |
99059e56 RM |
8012 | for (i = fd; i < fd + offset; i++) |
8013 | bfd_arm_vfp11_write_mask (destmask, i); | |
8014 | } | |
8015 | break; | |
906e58ca | 8016 | |
99059e56 RM |
8017 | case 4: /* fld[sd]. */ |
8018 | case 6: | |
8019 | bfd_arm_vfp11_write_mask (destmask, fd); | |
8020 | break; | |
906e58ca | 8021 | |
99059e56 RM |
8022 | default: |
8023 | return VFP11_BAD; | |
8024 | } | |
c7b8f16e | 8025 | |
91d6fa6a | 8026 | vpipe = VFP11_LS; |
c7b8f16e JB |
8027 | } |
8028 | /* Single-register transfer. Note L==0. */ | |
8029 | else if ((insn & 0x0f100e10) == 0x0e000a10) | |
8030 | { | |
8031 | unsigned int opcode = (insn >> 21) & 7; | |
8032 | unsigned int fn = bfd_arm_vfp11_regno (insn, is_double, 16, 7); | |
8033 | ||
8034 | switch (opcode) | |
99059e56 RM |
8035 | { |
8036 | case 0: /* fmsr/fmdlr. */ | |
8037 | case 1: /* fmdhr. */ | |
8038 | /* Mark fmdhr and fmdlr as writing to the whole of the DP | |
8039 | destination register. I don't know if this is exactly right, | |
8040 | but it is the conservative choice. */ | |
8041 | bfd_arm_vfp11_write_mask (destmask, fn); | |
8042 | break; | |
8043 | ||
8044 | case 7: /* fmxr. */ | |
8045 | break; | |
8046 | } | |
c7b8f16e | 8047 | |
91d6fa6a | 8048 | vpipe = VFP11_LS; |
c7b8f16e JB |
8049 | } |
8050 | ||
91d6fa6a | 8051 | return vpipe; |
c7b8f16e JB |
8052 | } |
8053 | ||
8054 | ||
8055 | static int elf32_arm_compare_mapping (const void * a, const void * b); | |
8056 | ||
8057 | ||
8058 | /* Look for potentially-troublesome code sequences which might trigger the | |
8059 | VFP11 denormal/antidependency erratum. See, e.g., the ARM1136 errata sheet | |
8060 | (available from ARM) for details of the erratum. A short version is | |
8061 | described in ld.texinfo. */ | |
8062 | ||
8063 | bfd_boolean | |
8064 | bfd_elf32_arm_vfp11_erratum_scan (bfd *abfd, struct bfd_link_info *link_info) | |
8065 | { | |
8066 | asection *sec; | |
8067 | bfd_byte *contents = NULL; | |
8068 | int state = 0; | |
8069 | int regs[3], numregs = 0; | |
8070 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); | |
8071 | int use_vector = (globals->vfp11_fix == BFD_ARM_VFP11_FIX_VECTOR); | |
906e58ca | 8072 | |
4dfe6ac6 NC |
8073 | if (globals == NULL) |
8074 | return FALSE; | |
8075 | ||
c7b8f16e JB |
8076 | /* We use a simple FSM to match troublesome VFP11 instruction sequences. |
8077 | The states transition as follows: | |
906e58ca | 8078 | |
c7b8f16e | 8079 | 0 -> 1 (vector) or 0 -> 2 (scalar) |
99059e56 RM |
8080 | A VFP FMAC-pipeline instruction has been seen. Fill |
8081 | regs[0]..regs[numregs-1] with its input operands. Remember this | |
8082 | instruction in 'first_fmac'. | |
c7b8f16e JB |
8083 | |
8084 | 1 -> 2 | |
99059e56 RM |
8085 | Any instruction, except for a VFP instruction which overwrites |
8086 | regs[*]. | |
906e58ca | 8087 | |
c7b8f16e JB |
8088 | 1 -> 3 [ -> 0 ] or |
8089 | 2 -> 3 [ -> 0 ] | |
99059e56 RM |
8090 | A VFP instruction has been seen which overwrites any of regs[*]. |
8091 | We must make a veneer! Reset state to 0 before examining next | |
8092 | instruction. | |
906e58ca | 8093 | |
c7b8f16e | 8094 | 2 -> 0 |
99059e56 RM |
8095 | If we fail to match anything in state 2, reset to state 0 and reset |
8096 | the instruction pointer to the instruction after 'first_fmac'. | |
c7b8f16e JB |
8097 | |
8098 | If the VFP11 vector mode is in use, there must be at least two unrelated | |
8099 | instructions between anti-dependent VFP11 instructions to properly avoid | |
906e58ca | 8100 | triggering the erratum, hence the use of the extra state 1. */ |
c7b8f16e JB |
8101 | |
8102 | /* If we are only performing a partial link do not bother | |
8103 | to construct any glue. */ | |
0e1862bb | 8104 | if (bfd_link_relocatable (link_info)) |
c7b8f16e JB |
8105 | return TRUE; |
8106 | ||
0ffa91dd NC |
8107 | /* Skip if this bfd does not correspond to an ELF image. */ |
8108 | if (! is_arm_elf (abfd)) | |
8109 | return TRUE; | |
906e58ca | 8110 | |
c7b8f16e JB |
8111 | /* We should have chosen a fix type by the time we get here. */ |
8112 | BFD_ASSERT (globals->vfp11_fix != BFD_ARM_VFP11_FIX_DEFAULT); | |
8113 | ||
8114 | if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_NONE) | |
8115 | return TRUE; | |
2e6030b9 | 8116 | |
33a7ffc2 JM |
8117 | /* Skip this BFD if it corresponds to an executable or dynamic object. */ |
8118 | if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0) | |
8119 | return TRUE; | |
8120 | ||
c7b8f16e JB |
8121 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
8122 | { | |
8123 | unsigned int i, span, first_fmac = 0, veneer_of_insn = 0; | |
8124 | struct _arm_elf_section_data *sec_data; | |
8125 | ||
8126 | /* If we don't have executable progbits, we're not interested in this | |
99059e56 | 8127 | section. Also skip if section is to be excluded. */ |
c7b8f16e | 8128 | if (elf_section_type (sec) != SHT_PROGBITS |
99059e56 RM |
8129 | || (elf_section_flags (sec) & SHF_EXECINSTR) == 0 |
8130 | || (sec->flags & SEC_EXCLUDE) != 0 | |
dbaa2011 | 8131 | || sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
33a7ffc2 | 8132 | || sec->output_section == bfd_abs_section_ptr |
99059e56 RM |
8133 | || strcmp (sec->name, VFP11_ERRATUM_VENEER_SECTION_NAME) == 0) |
8134 | continue; | |
c7b8f16e JB |
8135 | |
8136 | sec_data = elf32_arm_section_data (sec); | |
906e58ca | 8137 | |
c7b8f16e | 8138 | if (sec_data->mapcount == 0) |
99059e56 | 8139 | continue; |
906e58ca | 8140 | |
c7b8f16e JB |
8141 | if (elf_section_data (sec)->this_hdr.contents != NULL) |
8142 | contents = elf_section_data (sec)->this_hdr.contents; | |
8143 | else if (! bfd_malloc_and_get_section (abfd, sec, &contents)) | |
8144 | goto error_return; | |
8145 | ||
8146 | qsort (sec_data->map, sec_data->mapcount, sizeof (elf32_arm_section_map), | |
8147 | elf32_arm_compare_mapping); | |
8148 | ||
8149 | for (span = 0; span < sec_data->mapcount; span++) | |
99059e56 RM |
8150 | { |
8151 | unsigned int span_start = sec_data->map[span].vma; | |
8152 | unsigned int span_end = (span == sec_data->mapcount - 1) | |
c7b8f16e | 8153 | ? sec->size : sec_data->map[span + 1].vma; |
99059e56 RM |
8154 | char span_type = sec_data->map[span].type; |
8155 | ||
8156 | /* FIXME: Only ARM mode is supported at present. We may need to | |
8157 | support Thumb-2 mode also at some point. */ | |
8158 | if (span_type != 'a') | |
8159 | continue; | |
8160 | ||
8161 | for (i = span_start; i < span_end;) | |
8162 | { | |
8163 | unsigned int next_i = i + 4; | |
8164 | unsigned int insn = bfd_big_endian (abfd) | |
8165 | ? (contents[i] << 24) | |
8166 | | (contents[i + 1] << 16) | |
8167 | | (contents[i + 2] << 8) | |
8168 | | contents[i + 3] | |
8169 | : (contents[i + 3] << 24) | |
8170 | | (contents[i + 2] << 16) | |
8171 | | (contents[i + 1] << 8) | |
8172 | | contents[i]; | |
8173 | unsigned int writemask = 0; | |
8174 | enum bfd_arm_vfp11_pipe vpipe; | |
8175 | ||
8176 | switch (state) | |
8177 | { | |
8178 | case 0: | |
8179 | vpipe = bfd_arm_vfp11_insn_decode (insn, &writemask, regs, | |
8180 | &numregs); | |
8181 | /* I'm assuming the VFP11 erratum can trigger with denorm | |
8182 | operands on either the FMAC or the DS pipeline. This might | |
8183 | lead to slightly overenthusiastic veneer insertion. */ | |
8184 | if (vpipe == VFP11_FMAC || vpipe == VFP11_DS) | |
8185 | { | |
8186 | state = use_vector ? 1 : 2; | |
8187 | first_fmac = i; | |
8188 | veneer_of_insn = insn; | |
8189 | } | |
8190 | break; | |
8191 | ||
8192 | case 1: | |
8193 | { | |
8194 | int other_regs[3], other_numregs; | |
8195 | vpipe = bfd_arm_vfp11_insn_decode (insn, &writemask, | |
c7b8f16e | 8196 | other_regs, |
99059e56 RM |
8197 | &other_numregs); |
8198 | if (vpipe != VFP11_BAD | |
8199 | && bfd_arm_vfp11_antidependency (writemask, regs, | |
c7b8f16e | 8200 | numregs)) |
99059e56 RM |
8201 | state = 3; |
8202 | else | |
8203 | state = 2; | |
8204 | } | |
8205 | break; | |
8206 | ||
8207 | case 2: | |
8208 | { | |
8209 | int other_regs[3], other_numregs; | |
8210 | vpipe = bfd_arm_vfp11_insn_decode (insn, &writemask, | |
c7b8f16e | 8211 | other_regs, |
99059e56 RM |
8212 | &other_numregs); |
8213 | if (vpipe != VFP11_BAD | |
8214 | && bfd_arm_vfp11_antidependency (writemask, regs, | |
c7b8f16e | 8215 | numregs)) |
99059e56 RM |
8216 | state = 3; |
8217 | else | |
8218 | { | |
8219 | state = 0; | |
8220 | next_i = first_fmac + 4; | |
8221 | } | |
8222 | } | |
8223 | break; | |
8224 | ||
8225 | case 3: | |
8226 | abort (); /* Should be unreachable. */ | |
8227 | } | |
8228 | ||
8229 | if (state == 3) | |
8230 | { | |
8231 | elf32_vfp11_erratum_list *newerr =(elf32_vfp11_erratum_list *) | |
8232 | bfd_zmalloc (sizeof (elf32_vfp11_erratum_list)); | |
8233 | ||
8234 | elf32_arm_section_data (sec)->erratumcount += 1; | |
8235 | ||
8236 | newerr->u.b.vfp_insn = veneer_of_insn; | |
8237 | ||
8238 | switch (span_type) | |
8239 | { | |
8240 | case 'a': | |
8241 | newerr->type = VFP11_ERRATUM_BRANCH_TO_ARM_VENEER; | |
8242 | break; | |
8243 | ||
8244 | default: | |
8245 | abort (); | |
8246 | } | |
8247 | ||
8248 | record_vfp11_erratum_veneer (link_info, newerr, abfd, sec, | |
c7b8f16e JB |
8249 | first_fmac); |
8250 | ||
99059e56 | 8251 | newerr->vma = -1; |
c7b8f16e | 8252 | |
99059e56 RM |
8253 | newerr->next = sec_data->erratumlist; |
8254 | sec_data->erratumlist = newerr; | |
c7b8f16e | 8255 | |
99059e56 RM |
8256 | state = 0; |
8257 | } | |
c7b8f16e | 8258 | |
99059e56 RM |
8259 | i = next_i; |
8260 | } | |
8261 | } | |
906e58ca | 8262 | |
c7b8f16e | 8263 | if (contents != NULL |
99059e56 RM |
8264 | && elf_section_data (sec)->this_hdr.contents != contents) |
8265 | free (contents); | |
c7b8f16e JB |
8266 | contents = NULL; |
8267 | } | |
8268 | ||
8269 | return TRUE; | |
8270 | ||
8271 | error_return: | |
8272 | if (contents != NULL | |
8273 | && elf_section_data (sec)->this_hdr.contents != contents) | |
8274 | free (contents); | |
906e58ca | 8275 | |
c7b8f16e JB |
8276 | return FALSE; |
8277 | } | |
8278 | ||
8279 | /* Find virtual-memory addresses for VFP11 erratum veneers and return locations | |
8280 | after sections have been laid out, using specially-named symbols. */ | |
8281 | ||
8282 | void | |
8283 | bfd_elf32_arm_vfp11_fix_veneer_locations (bfd *abfd, | |
8284 | struct bfd_link_info *link_info) | |
8285 | { | |
8286 | asection *sec; | |
8287 | struct elf32_arm_link_hash_table *globals; | |
8288 | char *tmp_name; | |
906e58ca | 8289 | |
0e1862bb | 8290 | if (bfd_link_relocatable (link_info)) |
c7b8f16e | 8291 | return; |
2e6030b9 MS |
8292 | |
8293 | /* Skip if this bfd does not correspond to an ELF image. */ | |
0ffa91dd | 8294 | if (! is_arm_elf (abfd)) |
2e6030b9 MS |
8295 | return; |
8296 | ||
c7b8f16e | 8297 | globals = elf32_arm_hash_table (link_info); |
4dfe6ac6 NC |
8298 | if (globals == NULL) |
8299 | return; | |
906e58ca | 8300 | |
21d799b5 | 8301 | tmp_name = (char *) bfd_malloc ((bfd_size_type) strlen |
99059e56 | 8302 | (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10); |
c7b8f16e JB |
8303 | |
8304 | for (sec = abfd->sections; sec != NULL; sec = sec->next) | |
8305 | { | |
8306 | struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec); | |
8307 | elf32_vfp11_erratum_list *errnode = sec_data->erratumlist; | |
906e58ca | 8308 | |
c7b8f16e | 8309 | for (; errnode != NULL; errnode = errnode->next) |
99059e56 RM |
8310 | { |
8311 | struct elf_link_hash_entry *myh; | |
8312 | bfd_vma vma; | |
8313 | ||
8314 | switch (errnode->type) | |
8315 | { | |
8316 | case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER: | |
8317 | case VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER: | |
8318 | /* Find veneer symbol. */ | |
8319 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME, | |
c7b8f16e JB |
8320 | errnode->u.b.veneer->u.v.id); |
8321 | ||
99059e56 RM |
8322 | myh = elf_link_hash_lookup |
8323 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); | |
c7b8f16e | 8324 | |
a504d23a LA |
8325 | if (myh == NULL) |
8326 | (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer " | |
8327 | "`%s'"), abfd, tmp_name); | |
8328 | ||
8329 | vma = myh->root.u.def.section->output_section->vma | |
8330 | + myh->root.u.def.section->output_offset | |
8331 | + myh->root.u.def.value; | |
8332 | ||
8333 | errnode->u.b.veneer->vma = vma; | |
8334 | break; | |
8335 | ||
8336 | case VFP11_ERRATUM_ARM_VENEER: | |
8337 | case VFP11_ERRATUM_THUMB_VENEER: | |
8338 | /* Find return location. */ | |
8339 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r", | |
8340 | errnode->u.v.id); | |
8341 | ||
8342 | myh = elf_link_hash_lookup | |
8343 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); | |
8344 | ||
8345 | if (myh == NULL) | |
8346 | (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer " | |
8347 | "`%s'"), abfd, tmp_name); | |
8348 | ||
8349 | vma = myh->root.u.def.section->output_section->vma | |
8350 | + myh->root.u.def.section->output_offset | |
8351 | + myh->root.u.def.value; | |
8352 | ||
8353 | errnode->u.v.branch->vma = vma; | |
8354 | break; | |
8355 | ||
8356 | default: | |
8357 | abort (); | |
8358 | } | |
8359 | } | |
8360 | } | |
8361 | ||
8362 | free (tmp_name); | |
8363 | } | |
8364 | ||
8365 | /* Find virtual-memory addresses for STM32L4XX erratum veneers and | |
8366 | return locations after sections have been laid out, using | |
8367 | specially-named symbols. */ | |
8368 | ||
8369 | void | |
8370 | bfd_elf32_arm_stm32l4xx_fix_veneer_locations (bfd *abfd, | |
8371 | struct bfd_link_info *link_info) | |
8372 | { | |
8373 | asection *sec; | |
8374 | struct elf32_arm_link_hash_table *globals; | |
8375 | char *tmp_name; | |
8376 | ||
8377 | if (bfd_link_relocatable (link_info)) | |
8378 | return; | |
8379 | ||
8380 | /* Skip if this bfd does not correspond to an ELF image. */ | |
8381 | if (! is_arm_elf (abfd)) | |
8382 | return; | |
8383 | ||
8384 | globals = elf32_arm_hash_table (link_info); | |
8385 | if (globals == NULL) | |
8386 | return; | |
8387 | ||
8388 | tmp_name = (char *) bfd_malloc ((bfd_size_type) strlen | |
8389 | (STM32L4XX_ERRATUM_VENEER_ENTRY_NAME) + 10); | |
8390 | ||
8391 | for (sec = abfd->sections; sec != NULL; sec = sec->next) | |
8392 | { | |
8393 | struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec); | |
8394 | elf32_stm32l4xx_erratum_list *errnode = sec_data->stm32l4xx_erratumlist; | |
8395 | ||
8396 | for (; errnode != NULL; errnode = errnode->next) | |
8397 | { | |
8398 | struct elf_link_hash_entry *myh; | |
8399 | bfd_vma vma; | |
8400 | ||
8401 | switch (errnode->type) | |
8402 | { | |
8403 | case STM32L4XX_ERRATUM_BRANCH_TO_VENEER: | |
8404 | /* Find veneer symbol. */ | |
8405 | sprintf (tmp_name, STM32L4XX_ERRATUM_VENEER_ENTRY_NAME, | |
8406 | errnode->u.b.veneer->u.v.id); | |
8407 | ||
8408 | myh = elf_link_hash_lookup | |
8409 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); | |
8410 | ||
8411 | if (myh == NULL) | |
8412 | (*_bfd_error_handler) (_("%B: unable to find STM32L4XX veneer " | |
8413 | "`%s'"), abfd, tmp_name); | |
8414 | ||
8415 | vma = myh->root.u.def.section->output_section->vma | |
8416 | + myh->root.u.def.section->output_offset | |
8417 | + myh->root.u.def.value; | |
8418 | ||
8419 | errnode->u.b.veneer->vma = vma; | |
8420 | break; | |
8421 | ||
8422 | case STM32L4XX_ERRATUM_VENEER: | |
8423 | /* Find return location. */ | |
8424 | sprintf (tmp_name, STM32L4XX_ERRATUM_VENEER_ENTRY_NAME "_r", | |
8425 | errnode->u.v.id); | |
8426 | ||
8427 | myh = elf_link_hash_lookup | |
8428 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); | |
8429 | ||
8430 | if (myh == NULL) | |
8431 | (*_bfd_error_handler) (_("%B: unable to find STM32L4XX veneer " | |
8432 | "`%s'"), abfd, tmp_name); | |
8433 | ||
8434 | vma = myh->root.u.def.section->output_section->vma | |
8435 | + myh->root.u.def.section->output_offset | |
8436 | + myh->root.u.def.value; | |
8437 | ||
8438 | errnode->u.v.branch->vma = vma; | |
8439 | break; | |
8440 | ||
8441 | default: | |
8442 | abort (); | |
8443 | } | |
8444 | } | |
8445 | } | |
8446 | ||
8447 | free (tmp_name); | |
8448 | } | |
8449 | ||
8450 | static inline bfd_boolean | |
8451 | is_thumb2_ldmia (const insn32 insn) | |
8452 | { | |
8453 | /* Encoding T2: LDM<c>.W <Rn>{!},<registers> | |
8454 | 1110 - 1000 - 10W1 - rrrr - PM (0) l - llll - llll - llll. */ | |
8455 | return (insn & 0xffd02000) == 0xe8900000; | |
8456 | } | |
8457 | ||
8458 | static inline bfd_boolean | |
8459 | is_thumb2_ldmdb (const insn32 insn) | |
8460 | { | |
8461 | /* Encoding T1: LDMDB<c> <Rn>{!},<registers> | |
8462 | 1110 - 1001 - 00W1 - rrrr - PM (0) l - llll - llll - llll. */ | |
8463 | return (insn & 0xffd02000) == 0xe9100000; | |
8464 | } | |
8465 | ||
8466 | static inline bfd_boolean | |
8467 | is_thumb2_vldm (const insn32 insn) | |
8468 | { | |
8469 | /* A6.5 Extension register load or store instruction | |
8470 | A7.7.229 | |
9239bbd3 CM |
8471 | We look for SP 32-bit and DP 64-bit registers. |
8472 | Encoding T1 VLDM{mode}<c> <Rn>{!}, <list> | |
8473 | <list> is consecutive 64-bit registers | |
8474 | 1110 - 110P - UDW1 - rrrr - vvvv - 1011 - iiii - iiii | |
a504d23a LA |
8475 | Encoding T2 VLDM{mode}<c> <Rn>{!}, <list> |
8476 | <list> is consecutive 32-bit registers | |
8477 | 1110 - 110P - UDW1 - rrrr - vvvv - 1010 - iiii - iiii | |
8478 | if P==0 && U==1 && W==1 && Rn=1101 VPOP | |
8479 | if PUW=010 || PUW=011 || PUW=101 VLDM. */ | |
8480 | return | |
9239bbd3 CM |
8481 | (((insn & 0xfe100f00) == 0xec100b00) || |
8482 | ((insn & 0xfe100f00) == 0xec100a00)) | |
a504d23a LA |
8483 | && /* (IA without !). */ |
8484 | (((((insn << 7) >> 28) & 0xd) == 0x4) | |
9239bbd3 | 8485 | /* (IA with !), includes VPOP (when reg number is SP). */ |
a504d23a LA |
8486 | || ((((insn << 7) >> 28) & 0xd) == 0x5) |
8487 | /* (DB with !). */ | |
8488 | || ((((insn << 7) >> 28) & 0xd) == 0x9)); | |
8489 | } | |
8490 | ||
8491 | /* STM STM32L4XX erratum : This function assumes that it receives an LDM or | |
8492 | VLDM opcode and: | |
8493 | - computes the number and the mode of memory accesses | |
8494 | - decides if the replacement should be done: | |
8495 | . replaces only if > 8-word accesses | |
8496 | . or (testing purposes only) replaces all accesses. */ | |
8497 | ||
8498 | static bfd_boolean | |
8499 | stm32l4xx_need_create_replacing_stub (const insn32 insn, | |
8500 | bfd_arm_stm32l4xx_fix stm32l4xx_fix) | |
8501 | { | |
9239bbd3 | 8502 | int nb_words = 0; |
a504d23a LA |
8503 | |
8504 | /* The field encoding the register list is the same for both LDMIA | |
8505 | and LDMDB encodings. */ | |
8506 | if (is_thumb2_ldmia (insn) || is_thumb2_ldmdb (insn)) | |
9239bbd3 | 8507 | nb_words = popcount (insn & 0x0000ffff); |
a504d23a | 8508 | else if (is_thumb2_vldm (insn)) |
9239bbd3 | 8509 | nb_words = (insn & 0xff); |
a504d23a LA |
8510 | |
8511 | /* DEFAULT mode accounts for the real bug condition situation, | |
8512 | ALL mode inserts stubs for each LDM/VLDM instruction (testing). */ | |
8513 | return | |
9239bbd3 | 8514 | (stm32l4xx_fix == BFD_ARM_STM32L4XX_FIX_DEFAULT) ? nb_words > 8 : |
a504d23a LA |
8515 | (stm32l4xx_fix == BFD_ARM_STM32L4XX_FIX_ALL) ? TRUE : FALSE; |
8516 | } | |
8517 | ||
8518 | /* Look for potentially-troublesome code sequences which might trigger | |
8519 | the STM STM32L4XX erratum. */ | |
8520 | ||
8521 | bfd_boolean | |
8522 | bfd_elf32_arm_stm32l4xx_erratum_scan (bfd *abfd, | |
8523 | struct bfd_link_info *link_info) | |
8524 | { | |
8525 | asection *sec; | |
8526 | bfd_byte *contents = NULL; | |
8527 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); | |
8528 | ||
8529 | if (globals == NULL) | |
8530 | return FALSE; | |
8531 | ||
8532 | /* If we are only performing a partial link do not bother | |
8533 | to construct any glue. */ | |
8534 | if (bfd_link_relocatable (link_info)) | |
8535 | return TRUE; | |
8536 | ||
8537 | /* Skip if this bfd does not correspond to an ELF image. */ | |
8538 | if (! is_arm_elf (abfd)) | |
8539 | return TRUE; | |
8540 | ||
8541 | if (globals->stm32l4xx_fix == BFD_ARM_STM32L4XX_FIX_NONE) | |
8542 | return TRUE; | |
8543 | ||
8544 | /* Skip this BFD if it corresponds to an executable or dynamic object. */ | |
8545 | if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0) | |
8546 | return TRUE; | |
8547 | ||
8548 | for (sec = abfd->sections; sec != NULL; sec = sec->next) | |
8549 | { | |
8550 | unsigned int i, span; | |
8551 | struct _arm_elf_section_data *sec_data; | |
8552 | ||
8553 | /* If we don't have executable progbits, we're not interested in this | |
8554 | section. Also skip if section is to be excluded. */ | |
8555 | if (elf_section_type (sec) != SHT_PROGBITS | |
8556 | || (elf_section_flags (sec) & SHF_EXECINSTR) == 0 | |
8557 | || (sec->flags & SEC_EXCLUDE) != 0 | |
8558 | || sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS | |
8559 | || sec->output_section == bfd_abs_section_ptr | |
8560 | || strcmp (sec->name, STM32L4XX_ERRATUM_VENEER_SECTION_NAME) == 0) | |
8561 | continue; | |
8562 | ||
8563 | sec_data = elf32_arm_section_data (sec); | |
c7b8f16e | 8564 | |
a504d23a LA |
8565 | if (sec_data->mapcount == 0) |
8566 | continue; | |
c7b8f16e | 8567 | |
a504d23a LA |
8568 | if (elf_section_data (sec)->this_hdr.contents != NULL) |
8569 | contents = elf_section_data (sec)->this_hdr.contents; | |
8570 | else if (! bfd_malloc_and_get_section (abfd, sec, &contents)) | |
8571 | goto error_return; | |
c7b8f16e | 8572 | |
a504d23a LA |
8573 | qsort (sec_data->map, sec_data->mapcount, sizeof (elf32_arm_section_map), |
8574 | elf32_arm_compare_mapping); | |
c7b8f16e | 8575 | |
a504d23a LA |
8576 | for (span = 0; span < sec_data->mapcount; span++) |
8577 | { | |
8578 | unsigned int span_start = sec_data->map[span].vma; | |
8579 | unsigned int span_end = (span == sec_data->mapcount - 1) | |
8580 | ? sec->size : sec_data->map[span + 1].vma; | |
8581 | char span_type = sec_data->map[span].type; | |
8582 | int itblock_current_pos = 0; | |
c7b8f16e | 8583 | |
a504d23a LA |
8584 | /* Only Thumb2 mode need be supported with this CM4 specific |
8585 | code, we should not encounter any arm mode eg span_type | |
8586 | != 'a'. */ | |
8587 | if (span_type != 't') | |
8588 | continue; | |
c7b8f16e | 8589 | |
a504d23a LA |
8590 | for (i = span_start; i < span_end;) |
8591 | { | |
8592 | unsigned int insn = bfd_get_16 (abfd, &contents[i]); | |
8593 | bfd_boolean insn_32bit = FALSE; | |
8594 | bfd_boolean is_ldm = FALSE; | |
8595 | bfd_boolean is_vldm = FALSE; | |
8596 | bfd_boolean is_not_last_in_it_block = FALSE; | |
8597 | ||
8598 | /* The first 16-bits of all 32-bit thumb2 instructions start | |
8599 | with opcode[15..13]=0b111 and the encoded op1 can be anything | |
8600 | except opcode[12..11]!=0b00. | |
8601 | See 32-bit Thumb instruction encoding. */ | |
8602 | if ((insn & 0xe000) == 0xe000 && (insn & 0x1800) != 0x0000) | |
8603 | insn_32bit = TRUE; | |
c7b8f16e | 8604 | |
a504d23a LA |
8605 | /* Compute the predicate that tells if the instruction |
8606 | is concerned by the IT block | |
8607 | - Creates an error if there is a ldm that is not | |
8608 | last in the IT block thus cannot be replaced | |
8609 | - Otherwise we can create a branch at the end of the | |
8610 | IT block, it will be controlled naturally by IT | |
8611 | with the proper pseudo-predicate | |
8612 | - So the only interesting predicate is the one that | |
8613 | tells that we are not on the last item of an IT | |
8614 | block. */ | |
8615 | if (itblock_current_pos != 0) | |
8616 | is_not_last_in_it_block = !!--itblock_current_pos; | |
906e58ca | 8617 | |
a504d23a LA |
8618 | if (insn_32bit) |
8619 | { | |
8620 | /* Load the rest of the insn (in manual-friendly order). */ | |
8621 | insn = (insn << 16) | bfd_get_16 (abfd, &contents[i + 2]); | |
8622 | is_ldm = is_thumb2_ldmia (insn) || is_thumb2_ldmdb (insn); | |
8623 | is_vldm = is_thumb2_vldm (insn); | |
8624 | ||
8625 | /* Veneers are created for (v)ldm depending on | |
8626 | option flags and memory accesses conditions; but | |
8627 | if the instruction is not the last instruction of | |
8628 | an IT block, we cannot create a jump there, so we | |
8629 | bail out. */ | |
5025eb7c AO |
8630 | if ((is_ldm || is_vldm) |
8631 | && stm32l4xx_need_create_replacing_stub | |
a504d23a LA |
8632 | (insn, globals->stm32l4xx_fix)) |
8633 | { | |
8634 | if (is_not_last_in_it_block) | |
8635 | { | |
8636 | (*_bfd_error_handler) | |
8637 | /* Note - overlong line used here to allow for translation. */ | |
8638 | (_("\ | |
8639 | %B(%A+0x%lx): error: multiple load detected in non-last IT block instruction : STM32L4XX veneer cannot be generated.\n" | |
8640 | "Use gcc option -mrestrict-it to generate only one instruction per IT block.\n"), | |
8641 | abfd, sec, (long)i); | |
8642 | } | |
8643 | else | |
8644 | { | |
8645 | elf32_stm32l4xx_erratum_list *newerr = | |
8646 | (elf32_stm32l4xx_erratum_list *) | |
8647 | bfd_zmalloc | |
8648 | (sizeof (elf32_stm32l4xx_erratum_list)); | |
8649 | ||
8650 | elf32_arm_section_data (sec) | |
8651 | ->stm32l4xx_erratumcount += 1; | |
8652 | newerr->u.b.insn = insn; | |
8653 | /* We create only thumb branches. */ | |
8654 | newerr->type = | |
8655 | STM32L4XX_ERRATUM_BRANCH_TO_VENEER; | |
8656 | record_stm32l4xx_erratum_veneer | |
8657 | (link_info, newerr, abfd, sec, | |
8658 | i, | |
8659 | is_ldm ? | |
8660 | STM32L4XX_ERRATUM_LDM_VENEER_SIZE: | |
8661 | STM32L4XX_ERRATUM_VLDM_VENEER_SIZE); | |
8662 | newerr->vma = -1; | |
8663 | newerr->next = sec_data->stm32l4xx_erratumlist; | |
8664 | sec_data->stm32l4xx_erratumlist = newerr; | |
8665 | } | |
8666 | } | |
8667 | } | |
8668 | else | |
8669 | { | |
8670 | /* A7.7.37 IT p208 | |
8671 | IT blocks are only encoded in T1 | |
8672 | Encoding T1: IT{x{y{z}}} <firstcond> | |
8673 | 1 0 1 1 - 1 1 1 1 - firstcond - mask | |
8674 | if mask = '0000' then see 'related encodings' | |
8675 | We don't deal with UNPREDICTABLE, just ignore these. | |
8676 | There can be no nested IT blocks so an IT block | |
8677 | is naturally a new one for which it is worth | |
8678 | computing its size. */ | |
5025eb7c AO |
8679 | bfd_boolean is_newitblock = ((insn & 0xff00) == 0xbf00) |
8680 | && ((insn & 0x000f) != 0x0000); | |
a504d23a LA |
8681 | /* If we have a new IT block we compute its size. */ |
8682 | if (is_newitblock) | |
8683 | { | |
8684 | /* Compute the number of instructions controlled | |
8685 | by the IT block, it will be used to decide | |
8686 | whether we are inside an IT block or not. */ | |
8687 | unsigned int mask = insn & 0x000f; | |
8688 | itblock_current_pos = 4 - ctz (mask); | |
8689 | } | |
8690 | } | |
8691 | ||
8692 | i += insn_32bit ? 4 : 2; | |
99059e56 RM |
8693 | } |
8694 | } | |
a504d23a LA |
8695 | |
8696 | if (contents != NULL | |
8697 | && elf_section_data (sec)->this_hdr.contents != contents) | |
8698 | free (contents); | |
8699 | contents = NULL; | |
c7b8f16e | 8700 | } |
906e58ca | 8701 | |
a504d23a LA |
8702 | return TRUE; |
8703 | ||
8704 | error_return: | |
8705 | if (contents != NULL | |
8706 | && elf_section_data (sec)->this_hdr.contents != contents) | |
8707 | free (contents); | |
c7b8f16e | 8708 | |
a504d23a LA |
8709 | return FALSE; |
8710 | } | |
c7b8f16e | 8711 | |
eb043451 PB |
8712 | /* Set target relocation values needed during linking. */ |
8713 | ||
8714 | void | |
68c39892 | 8715 | bfd_elf32_arm_set_target_params (struct bfd *output_bfd, |
bf21ed78 | 8716 | struct bfd_link_info *link_info, |
68c39892 | 8717 | struct elf32_arm_params *params) |
eb043451 PB |
8718 | { |
8719 | struct elf32_arm_link_hash_table *globals; | |
8720 | ||
8721 | globals = elf32_arm_hash_table (link_info); | |
4dfe6ac6 NC |
8722 | if (globals == NULL) |
8723 | return; | |
eb043451 | 8724 | |
68c39892 TP |
8725 | globals->target1_is_rel = params->target1_is_rel; |
8726 | if (strcmp (params->target2_type, "rel") == 0) | |
eb043451 | 8727 | globals->target2_reloc = R_ARM_REL32; |
68c39892 | 8728 | else if (strcmp (params->target2_type, "abs") == 0) |
eeac373a | 8729 | globals->target2_reloc = R_ARM_ABS32; |
68c39892 | 8730 | else if (strcmp (params->target2_type, "got-rel") == 0) |
eb043451 PB |
8731 | globals->target2_reloc = R_ARM_GOT_PREL; |
8732 | else | |
8733 | { | |
8734 | _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."), | |
68c39892 | 8735 | params->target2_type); |
eb043451 | 8736 | } |
68c39892 TP |
8737 | globals->fix_v4bx = params->fix_v4bx; |
8738 | globals->use_blx |= params->use_blx; | |
8739 | globals->vfp11_fix = params->vfp11_denorm_fix; | |
8740 | globals->stm32l4xx_fix = params->stm32l4xx_fix; | |
8741 | globals->pic_veneer = params->pic_veneer; | |
8742 | globals->fix_cortex_a8 = params->fix_cortex_a8; | |
8743 | globals->fix_arm1176 = params->fix_arm1176; | |
8744 | globals->cmse_implib = params->cmse_implib; | |
8745 | globals->in_implib_bfd = params->in_implib_bfd; | |
bf21ed78 | 8746 | |
0ffa91dd | 8747 | BFD_ASSERT (is_arm_elf (output_bfd)); |
68c39892 TP |
8748 | elf_arm_tdata (output_bfd)->no_enum_size_warning |
8749 | = params->no_enum_size_warning; | |
8750 | elf_arm_tdata (output_bfd)->no_wchar_size_warning | |
8751 | = params->no_wchar_size_warning; | |
eb043451 | 8752 | } |
eb043451 | 8753 | |
12a0a0fd | 8754 | /* Replace the target offset of a Thumb bl or b.w instruction. */ |
252b5132 | 8755 | |
12a0a0fd PB |
8756 | static void |
8757 | insert_thumb_branch (bfd *abfd, long int offset, bfd_byte *insn) | |
8758 | { | |
8759 | bfd_vma upper; | |
8760 | bfd_vma lower; | |
8761 | int reloc_sign; | |
8762 | ||
8763 | BFD_ASSERT ((offset & 1) == 0); | |
8764 | ||
8765 | upper = bfd_get_16 (abfd, insn); | |
8766 | lower = bfd_get_16 (abfd, insn + 2); | |
8767 | reloc_sign = (offset < 0) ? 1 : 0; | |
8768 | upper = (upper & ~(bfd_vma) 0x7ff) | |
8769 | | ((offset >> 12) & 0x3ff) | |
8770 | | (reloc_sign << 10); | |
906e58ca | 8771 | lower = (lower & ~(bfd_vma) 0x2fff) |
12a0a0fd PB |
8772 | | (((!((offset >> 23) & 1)) ^ reloc_sign) << 13) |
8773 | | (((!((offset >> 22) & 1)) ^ reloc_sign) << 11) | |
8774 | | ((offset >> 1) & 0x7ff); | |
8775 | bfd_put_16 (abfd, upper, insn); | |
8776 | bfd_put_16 (abfd, lower, insn + 2); | |
252b5132 RH |
8777 | } |
8778 | ||
9b485d32 NC |
8779 | /* Thumb code calling an ARM function. */ |
8780 | ||
252b5132 | 8781 | static int |
57e8b36a NC |
8782 | elf32_thumb_to_arm_stub (struct bfd_link_info * info, |
8783 | const char * name, | |
8784 | bfd * input_bfd, | |
8785 | bfd * output_bfd, | |
8786 | asection * input_section, | |
8787 | bfd_byte * hit_data, | |
8788 | asection * sym_sec, | |
8789 | bfd_vma offset, | |
8790 | bfd_signed_vma addend, | |
f2a9dd69 DJ |
8791 | bfd_vma val, |
8792 | char **error_message) | |
252b5132 | 8793 | { |
bcbdc74c | 8794 | asection * s = 0; |
dc810e39 | 8795 | bfd_vma my_offset; |
252b5132 | 8796 | long int ret_offset; |
bcbdc74c NC |
8797 | struct elf_link_hash_entry * myh; |
8798 | struct elf32_arm_link_hash_table * globals; | |
252b5132 | 8799 | |
f2a9dd69 | 8800 | myh = find_thumb_glue (info, name, error_message); |
252b5132 | 8801 | if (myh == NULL) |
b34976b6 | 8802 | return FALSE; |
252b5132 RH |
8803 | |
8804 | globals = elf32_arm_hash_table (info); | |
252b5132 RH |
8805 | BFD_ASSERT (globals != NULL); |
8806 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
8807 | ||
8808 | my_offset = myh->root.u.def.value; | |
8809 | ||
3d4d4302 AM |
8810 | s = bfd_get_linker_section (globals->bfd_of_glue_owner, |
8811 | THUMB2ARM_GLUE_SECTION_NAME); | |
252b5132 RH |
8812 | |
8813 | BFD_ASSERT (s != NULL); | |
8814 | BFD_ASSERT (s->contents != NULL); | |
8815 | BFD_ASSERT (s->output_section != NULL); | |
8816 | ||
8817 | if ((my_offset & 0x01) == 0x01) | |
8818 | { | |
8819 | if (sym_sec != NULL | |
8820 | && sym_sec->owner != NULL | |
8821 | && !INTERWORK_FLAG (sym_sec->owner)) | |
8822 | { | |
8f615d07 | 8823 | (*_bfd_error_handler) |
d003868e | 8824 | (_("%B(%s): warning: interworking not enabled.\n" |
3aaeb7d3 | 8825 | " first occurrence: %B: Thumb call to ARM"), |
d003868e | 8826 | sym_sec->owner, input_bfd, name); |
252b5132 | 8827 | |
b34976b6 | 8828 | return FALSE; |
252b5132 RH |
8829 | } |
8830 | ||
8831 | --my_offset; | |
8832 | myh->root.u.def.value = my_offset; | |
8833 | ||
52ab56c2 PB |
8834 | put_thumb_insn (globals, output_bfd, (bfd_vma) t2a1_bx_pc_insn, |
8835 | s->contents + my_offset); | |
252b5132 | 8836 | |
52ab56c2 PB |
8837 | put_thumb_insn (globals, output_bfd, (bfd_vma) t2a2_noop_insn, |
8838 | s->contents + my_offset + 2); | |
252b5132 RH |
8839 | |
8840 | ret_offset = | |
9b485d32 NC |
8841 | /* Address of destination of the stub. */ |
8842 | ((bfd_signed_vma) val) | |
252b5132 | 8843 | - ((bfd_signed_vma) |
57e8b36a NC |
8844 | /* Offset from the start of the current section |
8845 | to the start of the stubs. */ | |
9b485d32 NC |
8846 | (s->output_offset |
8847 | /* Offset of the start of this stub from the start of the stubs. */ | |
8848 | + my_offset | |
8849 | /* Address of the start of the current section. */ | |
8850 | + s->output_section->vma) | |
8851 | /* The branch instruction is 4 bytes into the stub. */ | |
8852 | + 4 | |
8853 | /* ARM branches work from the pc of the instruction + 8. */ | |
8854 | + 8); | |
252b5132 | 8855 | |
52ab56c2 PB |
8856 | put_arm_insn (globals, output_bfd, |
8857 | (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF), | |
8858 | s->contents + my_offset + 4); | |
252b5132 RH |
8859 | } |
8860 | ||
8861 | BFD_ASSERT (my_offset <= globals->thumb_glue_size); | |
8862 | ||
427bfd90 NC |
8863 | /* Now go back and fix up the original BL insn to point to here. */ |
8864 | ret_offset = | |
8865 | /* Address of where the stub is located. */ | |
8866 | (s->output_section->vma + s->output_offset + my_offset) | |
8867 | /* Address of where the BL is located. */ | |
57e8b36a NC |
8868 | - (input_section->output_section->vma + input_section->output_offset |
8869 | + offset) | |
427bfd90 NC |
8870 | /* Addend in the relocation. */ |
8871 | - addend | |
8872 | /* Biassing for PC-relative addressing. */ | |
8873 | - 8; | |
252b5132 | 8874 | |
12a0a0fd | 8875 | insert_thumb_branch (input_bfd, ret_offset, hit_data - input_section->vma); |
252b5132 | 8876 | |
b34976b6 | 8877 | return TRUE; |
252b5132 RH |
8878 | } |
8879 | ||
a4fd1a8e | 8880 | /* Populate an Arm to Thumb stub. Returns the stub symbol. */ |
9b485d32 | 8881 | |
a4fd1a8e PB |
8882 | static struct elf_link_hash_entry * |
8883 | elf32_arm_create_thumb_stub (struct bfd_link_info * info, | |
8884 | const char * name, | |
8885 | bfd * input_bfd, | |
8886 | bfd * output_bfd, | |
8887 | asection * sym_sec, | |
8888 | bfd_vma val, | |
8029a119 NC |
8889 | asection * s, |
8890 | char ** error_message) | |
252b5132 | 8891 | { |
dc810e39 | 8892 | bfd_vma my_offset; |
252b5132 | 8893 | long int ret_offset; |
bcbdc74c NC |
8894 | struct elf_link_hash_entry * myh; |
8895 | struct elf32_arm_link_hash_table * globals; | |
252b5132 | 8896 | |
f2a9dd69 | 8897 | myh = find_arm_glue (info, name, error_message); |
252b5132 | 8898 | if (myh == NULL) |
a4fd1a8e | 8899 | return NULL; |
252b5132 RH |
8900 | |
8901 | globals = elf32_arm_hash_table (info); | |
252b5132 RH |
8902 | BFD_ASSERT (globals != NULL); |
8903 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
8904 | ||
8905 | my_offset = myh->root.u.def.value; | |
252b5132 RH |
8906 | |
8907 | if ((my_offset & 0x01) == 0x01) | |
8908 | { | |
8909 | if (sym_sec != NULL | |
8910 | && sym_sec->owner != NULL | |
8911 | && !INTERWORK_FLAG (sym_sec->owner)) | |
8912 | { | |
8f615d07 | 8913 | (*_bfd_error_handler) |
d003868e AM |
8914 | (_("%B(%s): warning: interworking not enabled.\n" |
8915 | " first occurrence: %B: arm call to thumb"), | |
8916 | sym_sec->owner, input_bfd, name); | |
252b5132 | 8917 | } |
9b485d32 | 8918 | |
252b5132 RH |
8919 | --my_offset; |
8920 | myh->root.u.def.value = my_offset; | |
8921 | ||
0e1862bb L |
8922 | if (bfd_link_pic (info) |
8923 | || globals->root.is_relocatable_executable | |
27e55c4d | 8924 | || globals->pic_veneer) |
8f6277f5 PB |
8925 | { |
8926 | /* For relocatable objects we can't use absolute addresses, | |
8927 | so construct the address from a relative offset. */ | |
8928 | /* TODO: If the offset is small it's probably worth | |
8929 | constructing the address with adds. */ | |
52ab56c2 PB |
8930 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t1p_ldr_insn, |
8931 | s->contents + my_offset); | |
8932 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t2p_add_pc_insn, | |
8933 | s->contents + my_offset + 4); | |
8934 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t3p_bx_r12_insn, | |
8935 | s->contents + my_offset + 8); | |
8f6277f5 PB |
8936 | /* Adjust the offset by 4 for the position of the add, |
8937 | and 8 for the pipeline offset. */ | |
8938 | ret_offset = (val - (s->output_offset | |
8939 | + s->output_section->vma | |
8940 | + my_offset + 12)) | |
8941 | | 1; | |
8942 | bfd_put_32 (output_bfd, ret_offset, | |
8943 | s->contents + my_offset + 12); | |
8944 | } | |
26079076 PB |
8945 | else if (globals->use_blx) |
8946 | { | |
8947 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t1v5_ldr_insn, | |
8948 | s->contents + my_offset); | |
8949 | ||
8950 | /* It's a thumb address. Add the low order bit. */ | |
8951 | bfd_put_32 (output_bfd, val | a2t2v5_func_addr_insn, | |
8952 | s->contents + my_offset + 4); | |
8953 | } | |
8f6277f5 PB |
8954 | else |
8955 | { | |
52ab56c2 PB |
8956 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t1_ldr_insn, |
8957 | s->contents + my_offset); | |
252b5132 | 8958 | |
52ab56c2 PB |
8959 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t2_bx_r12_insn, |
8960 | s->contents + my_offset + 4); | |
252b5132 | 8961 | |
8f6277f5 PB |
8962 | /* It's a thumb address. Add the low order bit. */ |
8963 | bfd_put_32 (output_bfd, val | a2t3_func_addr_insn, | |
8964 | s->contents + my_offset + 8); | |
8029a119 NC |
8965 | |
8966 | my_offset += 12; | |
8f6277f5 | 8967 | } |
252b5132 RH |
8968 | } |
8969 | ||
8970 | BFD_ASSERT (my_offset <= globals->arm_glue_size); | |
8971 | ||
a4fd1a8e PB |
8972 | return myh; |
8973 | } | |
8974 | ||
8975 | /* Arm code calling a Thumb function. */ | |
8976 | ||
8977 | static int | |
8978 | elf32_arm_to_thumb_stub (struct bfd_link_info * info, | |
8979 | const char * name, | |
8980 | bfd * input_bfd, | |
8981 | bfd * output_bfd, | |
8982 | asection * input_section, | |
8983 | bfd_byte * hit_data, | |
8984 | asection * sym_sec, | |
8985 | bfd_vma offset, | |
8986 | bfd_signed_vma addend, | |
f2a9dd69 DJ |
8987 | bfd_vma val, |
8988 | char **error_message) | |
a4fd1a8e PB |
8989 | { |
8990 | unsigned long int tmp; | |
8991 | bfd_vma my_offset; | |
8992 | asection * s; | |
8993 | long int ret_offset; | |
8994 | struct elf_link_hash_entry * myh; | |
8995 | struct elf32_arm_link_hash_table * globals; | |
8996 | ||
8997 | globals = elf32_arm_hash_table (info); | |
a4fd1a8e PB |
8998 | BFD_ASSERT (globals != NULL); |
8999 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
9000 | ||
3d4d4302 AM |
9001 | s = bfd_get_linker_section (globals->bfd_of_glue_owner, |
9002 | ARM2THUMB_GLUE_SECTION_NAME); | |
a4fd1a8e PB |
9003 | BFD_ASSERT (s != NULL); |
9004 | BFD_ASSERT (s->contents != NULL); | |
9005 | BFD_ASSERT (s->output_section != NULL); | |
9006 | ||
9007 | myh = elf32_arm_create_thumb_stub (info, name, input_bfd, output_bfd, | |
f2a9dd69 | 9008 | sym_sec, val, s, error_message); |
a4fd1a8e PB |
9009 | if (!myh) |
9010 | return FALSE; | |
9011 | ||
9012 | my_offset = myh->root.u.def.value; | |
252b5132 RH |
9013 | tmp = bfd_get_32 (input_bfd, hit_data); |
9014 | tmp = tmp & 0xFF000000; | |
9015 | ||
9b485d32 | 9016 | /* Somehow these are both 4 too far, so subtract 8. */ |
dc810e39 AM |
9017 | ret_offset = (s->output_offset |
9018 | + my_offset | |
9019 | + s->output_section->vma | |
9020 | - (input_section->output_offset | |
9021 | + input_section->output_section->vma | |
9022 | + offset + addend) | |
9023 | - 8); | |
9a5aca8c | 9024 | |
252b5132 RH |
9025 | tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF); |
9026 | ||
dc810e39 | 9027 | bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma); |
252b5132 | 9028 | |
b34976b6 | 9029 | return TRUE; |
252b5132 RH |
9030 | } |
9031 | ||
a4fd1a8e PB |
9032 | /* Populate Arm stub for an exported Thumb function. */ |
9033 | ||
9034 | static bfd_boolean | |
9035 | elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry *h, void * inf) | |
9036 | { | |
9037 | struct bfd_link_info * info = (struct bfd_link_info *) inf; | |
9038 | asection * s; | |
9039 | struct elf_link_hash_entry * myh; | |
9040 | struct elf32_arm_link_hash_entry *eh; | |
9041 | struct elf32_arm_link_hash_table * globals; | |
9042 | asection *sec; | |
9043 | bfd_vma val; | |
f2a9dd69 | 9044 | char *error_message; |
a4fd1a8e | 9045 | |
906e58ca | 9046 | eh = elf32_arm_hash_entry (h); |
a4fd1a8e PB |
9047 | /* Allocate stubs for exported Thumb functions on v4t. */ |
9048 | if (eh->export_glue == NULL) | |
9049 | return TRUE; | |
9050 | ||
9051 | globals = elf32_arm_hash_table (info); | |
a4fd1a8e PB |
9052 | BFD_ASSERT (globals != NULL); |
9053 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
9054 | ||
3d4d4302 AM |
9055 | s = bfd_get_linker_section (globals->bfd_of_glue_owner, |
9056 | ARM2THUMB_GLUE_SECTION_NAME); | |
a4fd1a8e PB |
9057 | BFD_ASSERT (s != NULL); |
9058 | BFD_ASSERT (s->contents != NULL); | |
9059 | BFD_ASSERT (s->output_section != NULL); | |
9060 | ||
9061 | sec = eh->export_glue->root.u.def.section; | |
0eaedd0e PB |
9062 | |
9063 | BFD_ASSERT (sec->output_section != NULL); | |
9064 | ||
a4fd1a8e PB |
9065 | val = eh->export_glue->root.u.def.value + sec->output_offset |
9066 | + sec->output_section->vma; | |
8029a119 | 9067 | |
a4fd1a8e PB |
9068 | myh = elf32_arm_create_thumb_stub (info, h->root.root.string, |
9069 | h->root.u.def.section->owner, | |
f2a9dd69 DJ |
9070 | globals->obfd, sec, val, s, |
9071 | &error_message); | |
a4fd1a8e PB |
9072 | BFD_ASSERT (myh); |
9073 | return TRUE; | |
9074 | } | |
9075 | ||
845b51d6 PB |
9076 | /* Populate ARMv4 BX veneers. Returns the absolute adress of the veneer. */ |
9077 | ||
9078 | static bfd_vma | |
9079 | elf32_arm_bx_glue (struct bfd_link_info * info, int reg) | |
9080 | { | |
9081 | bfd_byte *p; | |
9082 | bfd_vma glue_addr; | |
9083 | asection *s; | |
9084 | struct elf32_arm_link_hash_table *globals; | |
9085 | ||
9086 | globals = elf32_arm_hash_table (info); | |
845b51d6 PB |
9087 | BFD_ASSERT (globals != NULL); |
9088 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
9089 | ||
3d4d4302 AM |
9090 | s = bfd_get_linker_section (globals->bfd_of_glue_owner, |
9091 | ARM_BX_GLUE_SECTION_NAME); | |
845b51d6 PB |
9092 | BFD_ASSERT (s != NULL); |
9093 | BFD_ASSERT (s->contents != NULL); | |
9094 | BFD_ASSERT (s->output_section != NULL); | |
9095 | ||
9096 | BFD_ASSERT (globals->bx_glue_offset[reg] & 2); | |
9097 | ||
9098 | glue_addr = globals->bx_glue_offset[reg] & ~(bfd_vma)3; | |
9099 | ||
9100 | if ((globals->bx_glue_offset[reg] & 1) == 0) | |
9101 | { | |
9102 | p = s->contents + glue_addr; | |
9103 | bfd_put_32 (globals->obfd, armbx1_tst_insn + (reg << 16), p); | |
9104 | bfd_put_32 (globals->obfd, armbx2_moveq_insn + reg, p + 4); | |
9105 | bfd_put_32 (globals->obfd, armbx3_bx_insn + reg, p + 8); | |
9106 | globals->bx_glue_offset[reg] |= 1; | |
9107 | } | |
9108 | ||
9109 | return glue_addr + s->output_section->vma + s->output_offset; | |
9110 | } | |
9111 | ||
a4fd1a8e PB |
9112 | /* Generate Arm stubs for exported Thumb symbols. */ |
9113 | static void | |
906e58ca | 9114 | elf32_arm_begin_write_processing (bfd *abfd ATTRIBUTE_UNUSED, |
a4fd1a8e PB |
9115 | struct bfd_link_info *link_info) |
9116 | { | |
9117 | struct elf32_arm_link_hash_table * globals; | |
9118 | ||
8029a119 NC |
9119 | if (link_info == NULL) |
9120 | /* Ignore this if we are not called by the ELF backend linker. */ | |
a4fd1a8e PB |
9121 | return; |
9122 | ||
9123 | globals = elf32_arm_hash_table (link_info); | |
4dfe6ac6 NC |
9124 | if (globals == NULL) |
9125 | return; | |
9126 | ||
84c08195 PB |
9127 | /* If blx is available then exported Thumb symbols are OK and there is |
9128 | nothing to do. */ | |
a4fd1a8e PB |
9129 | if (globals->use_blx) |
9130 | return; | |
9131 | ||
9132 | elf_link_hash_traverse (&globals->root, elf32_arm_to_thumb_export_stub, | |
9133 | link_info); | |
9134 | } | |
9135 | ||
47beaa6a RS |
9136 | /* Reserve space for COUNT dynamic relocations in relocation selection |
9137 | SRELOC. */ | |
9138 | ||
9139 | static void | |
9140 | elf32_arm_allocate_dynrelocs (struct bfd_link_info *info, asection *sreloc, | |
9141 | bfd_size_type count) | |
9142 | { | |
9143 | struct elf32_arm_link_hash_table *htab; | |
9144 | ||
9145 | htab = elf32_arm_hash_table (info); | |
9146 | BFD_ASSERT (htab->root.dynamic_sections_created); | |
9147 | if (sreloc == NULL) | |
9148 | abort (); | |
9149 | sreloc->size += RELOC_SIZE (htab) * count; | |
9150 | } | |
9151 | ||
34e77a92 RS |
9152 | /* Reserve space for COUNT R_ARM_IRELATIVE relocations. If the link is |
9153 | dynamic, the relocations should go in SRELOC, otherwise they should | |
9154 | go in the special .rel.iplt section. */ | |
9155 | ||
9156 | static void | |
9157 | elf32_arm_allocate_irelocs (struct bfd_link_info *info, asection *sreloc, | |
9158 | bfd_size_type count) | |
9159 | { | |
9160 | struct elf32_arm_link_hash_table *htab; | |
9161 | ||
9162 | htab = elf32_arm_hash_table (info); | |
9163 | if (!htab->root.dynamic_sections_created) | |
9164 | htab->root.irelplt->size += RELOC_SIZE (htab) * count; | |
9165 | else | |
9166 | { | |
9167 | BFD_ASSERT (sreloc != NULL); | |
9168 | sreloc->size += RELOC_SIZE (htab) * count; | |
9169 | } | |
9170 | } | |
9171 | ||
47beaa6a RS |
9172 | /* Add relocation REL to the end of relocation section SRELOC. */ |
9173 | ||
9174 | static void | |
9175 | elf32_arm_add_dynreloc (bfd *output_bfd, struct bfd_link_info *info, | |
9176 | asection *sreloc, Elf_Internal_Rela *rel) | |
9177 | { | |
9178 | bfd_byte *loc; | |
9179 | struct elf32_arm_link_hash_table *htab; | |
9180 | ||
9181 | htab = elf32_arm_hash_table (info); | |
34e77a92 RS |
9182 | if (!htab->root.dynamic_sections_created |
9183 | && ELF32_R_TYPE (rel->r_info) == R_ARM_IRELATIVE) | |
9184 | sreloc = htab->root.irelplt; | |
47beaa6a RS |
9185 | if (sreloc == NULL) |
9186 | abort (); | |
9187 | loc = sreloc->contents; | |
9188 | loc += sreloc->reloc_count++ * RELOC_SIZE (htab); | |
9189 | if (sreloc->reloc_count * RELOC_SIZE (htab) > sreloc->size) | |
9190 | abort (); | |
9191 | SWAP_RELOC_OUT (htab) (output_bfd, rel, loc); | |
9192 | } | |
9193 | ||
34e77a92 RS |
9194 | /* Allocate room for a PLT entry described by ROOT_PLT and ARM_PLT. |
9195 | IS_IPLT_ENTRY says whether the entry belongs to .iplt rather than | |
9196 | to .plt. */ | |
9197 | ||
9198 | static void | |
9199 | elf32_arm_allocate_plt_entry (struct bfd_link_info *info, | |
9200 | bfd_boolean is_iplt_entry, | |
9201 | union gotplt_union *root_plt, | |
9202 | struct arm_plt_info *arm_plt) | |
9203 | { | |
9204 | struct elf32_arm_link_hash_table *htab; | |
9205 | asection *splt; | |
9206 | asection *sgotplt; | |
9207 | ||
9208 | htab = elf32_arm_hash_table (info); | |
9209 | ||
9210 | if (is_iplt_entry) | |
9211 | { | |
9212 | splt = htab->root.iplt; | |
9213 | sgotplt = htab->root.igotplt; | |
9214 | ||
99059e56 RM |
9215 | /* NaCl uses a special first entry in .iplt too. */ |
9216 | if (htab->nacl_p && splt->size == 0) | |
9217 | splt->size += htab->plt_header_size; | |
9218 | ||
34e77a92 RS |
9219 | /* Allocate room for an R_ARM_IRELATIVE relocation in .rel.iplt. */ |
9220 | elf32_arm_allocate_irelocs (info, htab->root.irelplt, 1); | |
9221 | } | |
9222 | else | |
9223 | { | |
9224 | splt = htab->root.splt; | |
9225 | sgotplt = htab->root.sgotplt; | |
9226 | ||
9227 | /* Allocate room for an R_JUMP_SLOT relocation in .rel.plt. */ | |
9228 | elf32_arm_allocate_dynrelocs (info, htab->root.srelplt, 1); | |
9229 | ||
9230 | /* If this is the first .plt entry, make room for the special | |
9231 | first entry. */ | |
9232 | if (splt->size == 0) | |
9233 | splt->size += htab->plt_header_size; | |
9f19ab6d WN |
9234 | |
9235 | htab->next_tls_desc_index++; | |
34e77a92 RS |
9236 | } |
9237 | ||
9238 | /* Allocate the PLT entry itself, including any leading Thumb stub. */ | |
9239 | if (elf32_arm_plt_needs_thumb_stub_p (info, arm_plt)) | |
9240 | splt->size += PLT_THUMB_STUB_SIZE; | |
9241 | root_plt->offset = splt->size; | |
9242 | splt->size += htab->plt_entry_size; | |
9243 | ||
9244 | if (!htab->symbian_p) | |
9245 | { | |
9246 | /* We also need to make an entry in the .got.plt section, which | |
9247 | will be placed in the .got section by the linker script. */ | |
9f19ab6d WN |
9248 | if (is_iplt_entry) |
9249 | arm_plt->got_offset = sgotplt->size; | |
9250 | else | |
9251 | arm_plt->got_offset = sgotplt->size - 8 * htab->num_tls_desc; | |
34e77a92 RS |
9252 | sgotplt->size += 4; |
9253 | } | |
9254 | } | |
9255 | ||
b38cadfb NC |
9256 | static bfd_vma |
9257 | arm_movw_immediate (bfd_vma value) | |
9258 | { | |
9259 | return (value & 0x00000fff) | ((value & 0x0000f000) << 4); | |
9260 | } | |
9261 | ||
9262 | static bfd_vma | |
9263 | arm_movt_immediate (bfd_vma value) | |
9264 | { | |
9265 | return ((value & 0x0fff0000) >> 16) | ((value & 0xf0000000) >> 12); | |
9266 | } | |
9267 | ||
34e77a92 RS |
9268 | /* Fill in a PLT entry and its associated GOT slot. If DYNINDX == -1, |
9269 | the entry lives in .iplt and resolves to (*SYM_VALUE)(). | |
9270 | Otherwise, DYNINDX is the index of the symbol in the dynamic | |
9271 | symbol table and SYM_VALUE is undefined. | |
9272 | ||
9273 | ROOT_PLT points to the offset of the PLT entry from the start of its | |
9274 | section (.iplt or .plt). ARM_PLT points to the symbol's ARM-specific | |
57460bcf | 9275 | bookkeeping information. |
34e77a92 | 9276 | |
57460bcf NC |
9277 | Returns FALSE if there was a problem. */ |
9278 | ||
9279 | static bfd_boolean | |
34e77a92 RS |
9280 | elf32_arm_populate_plt_entry (bfd *output_bfd, struct bfd_link_info *info, |
9281 | union gotplt_union *root_plt, | |
9282 | struct arm_plt_info *arm_plt, | |
9283 | int dynindx, bfd_vma sym_value) | |
9284 | { | |
9285 | struct elf32_arm_link_hash_table *htab; | |
9286 | asection *sgot; | |
9287 | asection *splt; | |
9288 | asection *srel; | |
9289 | bfd_byte *loc; | |
9290 | bfd_vma plt_index; | |
9291 | Elf_Internal_Rela rel; | |
9292 | bfd_vma plt_header_size; | |
9293 | bfd_vma got_header_size; | |
9294 | ||
9295 | htab = elf32_arm_hash_table (info); | |
9296 | ||
9297 | /* Pick the appropriate sections and sizes. */ | |
9298 | if (dynindx == -1) | |
9299 | { | |
9300 | splt = htab->root.iplt; | |
9301 | sgot = htab->root.igotplt; | |
9302 | srel = htab->root.irelplt; | |
9303 | ||
9304 | /* There are no reserved entries in .igot.plt, and no special | |
9305 | first entry in .iplt. */ | |
9306 | got_header_size = 0; | |
9307 | plt_header_size = 0; | |
9308 | } | |
9309 | else | |
9310 | { | |
9311 | splt = htab->root.splt; | |
9312 | sgot = htab->root.sgotplt; | |
9313 | srel = htab->root.srelplt; | |
9314 | ||
9315 | got_header_size = get_elf_backend_data (output_bfd)->got_header_size; | |
9316 | plt_header_size = htab->plt_header_size; | |
9317 | } | |
9318 | BFD_ASSERT (splt != NULL && srel != NULL); | |
9319 | ||
9320 | /* Fill in the entry in the procedure linkage table. */ | |
9321 | if (htab->symbian_p) | |
9322 | { | |
9323 | BFD_ASSERT (dynindx >= 0); | |
9324 | put_arm_insn (htab, output_bfd, | |
9325 | elf32_arm_symbian_plt_entry[0], | |
9326 | splt->contents + root_plt->offset); | |
9327 | bfd_put_32 (output_bfd, | |
9328 | elf32_arm_symbian_plt_entry[1], | |
9329 | splt->contents + root_plt->offset + 4); | |
9330 | ||
9331 | /* Fill in the entry in the .rel.plt section. */ | |
9332 | rel.r_offset = (splt->output_section->vma | |
9333 | + splt->output_offset | |
9334 | + root_plt->offset + 4); | |
9335 | rel.r_info = ELF32_R_INFO (dynindx, R_ARM_GLOB_DAT); | |
9336 | ||
9337 | /* Get the index in the procedure linkage table which | |
9338 | corresponds to this symbol. This is the index of this symbol | |
9339 | in all the symbols for which we are making plt entries. The | |
9340 | first entry in the procedure linkage table is reserved. */ | |
9341 | plt_index = ((root_plt->offset - plt_header_size) | |
9342 | / htab->plt_entry_size); | |
9343 | } | |
9344 | else | |
9345 | { | |
9346 | bfd_vma got_offset, got_address, plt_address; | |
9347 | bfd_vma got_displacement, initial_got_entry; | |
9348 | bfd_byte * ptr; | |
9349 | ||
9350 | BFD_ASSERT (sgot != NULL); | |
9351 | ||
9352 | /* Get the offset into the .(i)got.plt table of the entry that | |
9353 | corresponds to this function. */ | |
9354 | got_offset = (arm_plt->got_offset & -2); | |
9355 | ||
9356 | /* Get the index in the procedure linkage table which | |
9357 | corresponds to this symbol. This is the index of this symbol | |
9358 | in all the symbols for which we are making plt entries. | |
9359 | After the reserved .got.plt entries, all symbols appear in | |
9360 | the same order as in .plt. */ | |
9361 | plt_index = (got_offset - got_header_size) / 4; | |
9362 | ||
9363 | /* Calculate the address of the GOT entry. */ | |
9364 | got_address = (sgot->output_section->vma | |
9365 | + sgot->output_offset | |
9366 | + got_offset); | |
9367 | ||
9368 | /* ...and the address of the PLT entry. */ | |
9369 | plt_address = (splt->output_section->vma | |
9370 | + splt->output_offset | |
9371 | + root_plt->offset); | |
9372 | ||
9373 | ptr = splt->contents + root_plt->offset; | |
0e1862bb | 9374 | if (htab->vxworks_p && bfd_link_pic (info)) |
34e77a92 RS |
9375 | { |
9376 | unsigned int i; | |
9377 | bfd_vma val; | |
9378 | ||
9379 | for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4) | |
9380 | { | |
9381 | val = elf32_arm_vxworks_shared_plt_entry[i]; | |
9382 | if (i == 2) | |
9383 | val |= got_address - sgot->output_section->vma; | |
9384 | if (i == 5) | |
9385 | val |= plt_index * RELOC_SIZE (htab); | |
9386 | if (i == 2 || i == 5) | |
9387 | bfd_put_32 (output_bfd, val, ptr); | |
9388 | else | |
9389 | put_arm_insn (htab, output_bfd, val, ptr); | |
9390 | } | |
9391 | } | |
9392 | else if (htab->vxworks_p) | |
9393 | { | |
9394 | unsigned int i; | |
9395 | bfd_vma val; | |
9396 | ||
9397 | for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4) | |
9398 | { | |
9399 | val = elf32_arm_vxworks_exec_plt_entry[i]; | |
9400 | if (i == 2) | |
9401 | val |= got_address; | |
9402 | if (i == 4) | |
9403 | val |= 0xffffff & -((root_plt->offset + i * 4 + 8) >> 2); | |
9404 | if (i == 5) | |
9405 | val |= plt_index * RELOC_SIZE (htab); | |
9406 | if (i == 2 || i == 5) | |
9407 | bfd_put_32 (output_bfd, val, ptr); | |
9408 | else | |
9409 | put_arm_insn (htab, output_bfd, val, ptr); | |
9410 | } | |
9411 | ||
9412 | loc = (htab->srelplt2->contents | |
9413 | + (plt_index * 2 + 1) * RELOC_SIZE (htab)); | |
9414 | ||
9415 | /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation | |
9416 | referencing the GOT for this PLT entry. */ | |
9417 | rel.r_offset = plt_address + 8; | |
9418 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); | |
9419 | rel.r_addend = got_offset; | |
9420 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
9421 | loc += RELOC_SIZE (htab); | |
9422 | ||
9423 | /* Create the R_ARM_ABS32 relocation referencing the | |
9424 | beginning of the PLT for this GOT entry. */ | |
9425 | rel.r_offset = got_address; | |
9426 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32); | |
9427 | rel.r_addend = 0; | |
9428 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
9429 | } | |
b38cadfb NC |
9430 | else if (htab->nacl_p) |
9431 | { | |
9432 | /* Calculate the displacement between the PLT slot and the | |
9433 | common tail that's part of the special initial PLT slot. */ | |
6034aab8 | 9434 | int32_t tail_displacement |
b38cadfb NC |
9435 | = ((splt->output_section->vma + splt->output_offset |
9436 | + ARM_NACL_PLT_TAIL_OFFSET) | |
9437 | - (plt_address + htab->plt_entry_size + 4)); | |
9438 | BFD_ASSERT ((tail_displacement & 3) == 0); | |
9439 | tail_displacement >>= 2; | |
9440 | ||
9441 | BFD_ASSERT ((tail_displacement & 0xff000000) == 0 | |
9442 | || (-tail_displacement & 0xff000000) == 0); | |
9443 | ||
9444 | /* Calculate the displacement between the PLT slot and the entry | |
9445 | in the GOT. The offset accounts for the value produced by | |
9446 | adding to pc in the penultimate instruction of the PLT stub. */ | |
6034aab8 | 9447 | got_displacement = (got_address |
99059e56 | 9448 | - (plt_address + htab->plt_entry_size)); |
b38cadfb NC |
9449 | |
9450 | /* NaCl does not support interworking at all. */ | |
9451 | BFD_ASSERT (!elf32_arm_plt_needs_thumb_stub_p (info, arm_plt)); | |
9452 | ||
9453 | put_arm_insn (htab, output_bfd, | |
9454 | elf32_arm_nacl_plt_entry[0] | |
9455 | | arm_movw_immediate (got_displacement), | |
9456 | ptr + 0); | |
9457 | put_arm_insn (htab, output_bfd, | |
9458 | elf32_arm_nacl_plt_entry[1] | |
9459 | | arm_movt_immediate (got_displacement), | |
9460 | ptr + 4); | |
9461 | put_arm_insn (htab, output_bfd, | |
9462 | elf32_arm_nacl_plt_entry[2], | |
9463 | ptr + 8); | |
9464 | put_arm_insn (htab, output_bfd, | |
9465 | elf32_arm_nacl_plt_entry[3] | |
9466 | | (tail_displacement & 0x00ffffff), | |
9467 | ptr + 12); | |
9468 | } | |
57460bcf NC |
9469 | else if (using_thumb_only (htab)) |
9470 | { | |
eed94f8f | 9471 | /* PR ld/16017: Generate thumb only PLT entries. */ |
469a3493 | 9472 | if (!using_thumb2 (htab)) |
eed94f8f NC |
9473 | { |
9474 | /* FIXME: We ought to be able to generate thumb-1 PLT | |
9475 | instructions... */ | |
9476 | _bfd_error_handler (_("%B: Warning: thumb-1 mode PLT generation not currently supported"), | |
9477 | output_bfd); | |
9478 | return FALSE; | |
9479 | } | |
57460bcf | 9480 | |
eed94f8f NC |
9481 | /* Calculate the displacement between the PLT slot and the entry in |
9482 | the GOT. The 12-byte offset accounts for the value produced by | |
9483 | adding to pc in the 3rd instruction of the PLT stub. */ | |
9484 | got_displacement = got_address - (plt_address + 12); | |
9485 | ||
9486 | /* As we are using 32 bit instructions we have to use 'put_arm_insn' | |
9487 | instead of 'put_thumb_insn'. */ | |
9488 | put_arm_insn (htab, output_bfd, | |
9489 | elf32_thumb2_plt_entry[0] | |
9490 | | ((got_displacement & 0x000000ff) << 16) | |
9491 | | ((got_displacement & 0x00000700) << 20) | |
9492 | | ((got_displacement & 0x00000800) >> 1) | |
9493 | | ((got_displacement & 0x0000f000) >> 12), | |
9494 | ptr + 0); | |
9495 | put_arm_insn (htab, output_bfd, | |
9496 | elf32_thumb2_plt_entry[1] | |
9497 | | ((got_displacement & 0x00ff0000) ) | |
9498 | | ((got_displacement & 0x07000000) << 4) | |
9499 | | ((got_displacement & 0x08000000) >> 17) | |
9500 | | ((got_displacement & 0xf0000000) >> 28), | |
9501 | ptr + 4); | |
9502 | put_arm_insn (htab, output_bfd, | |
9503 | elf32_thumb2_plt_entry[2], | |
9504 | ptr + 8); | |
9505 | put_arm_insn (htab, output_bfd, | |
9506 | elf32_thumb2_plt_entry[3], | |
9507 | ptr + 12); | |
57460bcf | 9508 | } |
34e77a92 RS |
9509 | else |
9510 | { | |
9511 | /* Calculate the displacement between the PLT slot and the | |
9512 | entry in the GOT. The eight-byte offset accounts for the | |
9513 | value produced by adding to pc in the first instruction | |
9514 | of the PLT stub. */ | |
9515 | got_displacement = got_address - (plt_address + 8); | |
9516 | ||
34e77a92 RS |
9517 | if (elf32_arm_plt_needs_thumb_stub_p (info, arm_plt)) |
9518 | { | |
9519 | put_thumb_insn (htab, output_bfd, | |
9520 | elf32_arm_plt_thumb_stub[0], ptr - 4); | |
9521 | put_thumb_insn (htab, output_bfd, | |
9522 | elf32_arm_plt_thumb_stub[1], ptr - 2); | |
9523 | } | |
9524 | ||
1db37fe6 YG |
9525 | if (!elf32_arm_use_long_plt_entry) |
9526 | { | |
9527 | BFD_ASSERT ((got_displacement & 0xf0000000) == 0); | |
9528 | ||
9529 | put_arm_insn (htab, output_bfd, | |
9530 | elf32_arm_plt_entry_short[0] | |
9531 | | ((got_displacement & 0x0ff00000) >> 20), | |
9532 | ptr + 0); | |
9533 | put_arm_insn (htab, output_bfd, | |
9534 | elf32_arm_plt_entry_short[1] | |
9535 | | ((got_displacement & 0x000ff000) >> 12), | |
9536 | ptr+ 4); | |
9537 | put_arm_insn (htab, output_bfd, | |
9538 | elf32_arm_plt_entry_short[2] | |
9539 | | (got_displacement & 0x00000fff), | |
9540 | ptr + 8); | |
34e77a92 | 9541 | #ifdef FOUR_WORD_PLT |
1db37fe6 | 9542 | bfd_put_32 (output_bfd, elf32_arm_plt_entry_short[3], ptr + 12); |
34e77a92 | 9543 | #endif |
1db37fe6 YG |
9544 | } |
9545 | else | |
9546 | { | |
9547 | put_arm_insn (htab, output_bfd, | |
9548 | elf32_arm_plt_entry_long[0] | |
9549 | | ((got_displacement & 0xf0000000) >> 28), | |
9550 | ptr + 0); | |
9551 | put_arm_insn (htab, output_bfd, | |
9552 | elf32_arm_plt_entry_long[1] | |
9553 | | ((got_displacement & 0x0ff00000) >> 20), | |
9554 | ptr + 4); | |
9555 | put_arm_insn (htab, output_bfd, | |
9556 | elf32_arm_plt_entry_long[2] | |
9557 | | ((got_displacement & 0x000ff000) >> 12), | |
9558 | ptr+ 8); | |
9559 | put_arm_insn (htab, output_bfd, | |
9560 | elf32_arm_plt_entry_long[3] | |
9561 | | (got_displacement & 0x00000fff), | |
9562 | ptr + 12); | |
9563 | } | |
34e77a92 RS |
9564 | } |
9565 | ||
9566 | /* Fill in the entry in the .rel(a).(i)plt section. */ | |
9567 | rel.r_offset = got_address; | |
9568 | rel.r_addend = 0; | |
9569 | if (dynindx == -1) | |
9570 | { | |
9571 | /* .igot.plt entries use IRELATIVE relocations against SYM_VALUE. | |
9572 | The dynamic linker or static executable then calls SYM_VALUE | |
9573 | to determine the correct run-time value of the .igot.plt entry. */ | |
9574 | rel.r_info = ELF32_R_INFO (0, R_ARM_IRELATIVE); | |
9575 | initial_got_entry = sym_value; | |
9576 | } | |
9577 | else | |
9578 | { | |
9579 | rel.r_info = ELF32_R_INFO (dynindx, R_ARM_JUMP_SLOT); | |
9580 | initial_got_entry = (splt->output_section->vma | |
9581 | + splt->output_offset); | |
9582 | } | |
9583 | ||
9584 | /* Fill in the entry in the global offset table. */ | |
9585 | bfd_put_32 (output_bfd, initial_got_entry, | |
9586 | sgot->contents + got_offset); | |
9587 | } | |
9588 | ||
aba8c3de WN |
9589 | if (dynindx == -1) |
9590 | elf32_arm_add_dynreloc (output_bfd, info, srel, &rel); | |
9591 | else | |
9592 | { | |
9593 | loc = srel->contents + plt_index * RELOC_SIZE (htab); | |
9594 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
9595 | } | |
57460bcf NC |
9596 | |
9597 | return TRUE; | |
34e77a92 RS |
9598 | } |
9599 | ||
eb043451 PB |
9600 | /* Some relocations map to different relocations depending on the |
9601 | target. Return the real relocation. */ | |
8029a119 | 9602 | |
eb043451 PB |
9603 | static int |
9604 | arm_real_reloc_type (struct elf32_arm_link_hash_table * globals, | |
9605 | int r_type) | |
9606 | { | |
9607 | switch (r_type) | |
9608 | { | |
9609 | case R_ARM_TARGET1: | |
9610 | if (globals->target1_is_rel) | |
9611 | return R_ARM_REL32; | |
9612 | else | |
9613 | return R_ARM_ABS32; | |
9614 | ||
9615 | case R_ARM_TARGET2: | |
9616 | return globals->target2_reloc; | |
9617 | ||
9618 | default: | |
9619 | return r_type; | |
9620 | } | |
9621 | } | |
eb043451 | 9622 | |
ba93b8ac DJ |
9623 | /* Return the base VMA address which should be subtracted from real addresses |
9624 | when resolving @dtpoff relocation. | |
9625 | This is PT_TLS segment p_vaddr. */ | |
9626 | ||
9627 | static bfd_vma | |
9628 | dtpoff_base (struct bfd_link_info *info) | |
9629 | { | |
9630 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
9631 | if (elf_hash_table (info)->tls_sec == NULL) | |
9632 | return 0; | |
9633 | return elf_hash_table (info)->tls_sec->vma; | |
9634 | } | |
9635 | ||
9636 | /* Return the relocation value for @tpoff relocation | |
9637 | if STT_TLS virtual address is ADDRESS. */ | |
9638 | ||
9639 | static bfd_vma | |
9640 | tpoff (struct bfd_link_info *info, bfd_vma address) | |
9641 | { | |
9642 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
9643 | bfd_vma base; | |
9644 | ||
9645 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
9646 | if (htab->tls_sec == NULL) | |
9647 | return 0; | |
9648 | base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power); | |
9649 | return address - htab->tls_sec->vma + base; | |
9650 | } | |
9651 | ||
00a97672 RS |
9652 | /* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA. |
9653 | VALUE is the relocation value. */ | |
9654 | ||
9655 | static bfd_reloc_status_type | |
9656 | elf32_arm_abs12_reloc (bfd *abfd, void *data, bfd_vma value) | |
9657 | { | |
9658 | if (value > 0xfff) | |
9659 | return bfd_reloc_overflow; | |
9660 | ||
9661 | value |= bfd_get_32 (abfd, data) & 0xfffff000; | |
9662 | bfd_put_32 (abfd, value, data); | |
9663 | return bfd_reloc_ok; | |
9664 | } | |
9665 | ||
0855e32b NS |
9666 | /* Handle TLS relaxations. Relaxing is possible for symbols that use |
9667 | R_ARM_GOTDESC, R_ARM_{,THM_}TLS_CALL or | |
9668 | R_ARM_{,THM_}TLS_DESCSEQ relocations, during a static link. | |
9669 | ||
9670 | Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller | |
9671 | is to then call final_link_relocate. Return other values in the | |
62672b10 NS |
9672 | case of error. |
9673 | ||
9674 | FIXME:When --emit-relocs is in effect, we'll emit relocs describing | |
9675 | the pre-relaxed code. It would be nice if the relocs were updated | |
9676 | to match the optimization. */ | |
0855e32b | 9677 | |
b38cadfb | 9678 | static bfd_reloc_status_type |
0855e32b | 9679 | elf32_arm_tls_relax (struct elf32_arm_link_hash_table *globals, |
b38cadfb | 9680 | bfd *input_bfd, asection *input_sec, bfd_byte *contents, |
0855e32b NS |
9681 | Elf_Internal_Rela *rel, unsigned long is_local) |
9682 | { | |
9683 | unsigned long insn; | |
b38cadfb | 9684 | |
0855e32b NS |
9685 | switch (ELF32_R_TYPE (rel->r_info)) |
9686 | { | |
9687 | default: | |
9688 | return bfd_reloc_notsupported; | |
b38cadfb | 9689 | |
0855e32b NS |
9690 | case R_ARM_TLS_GOTDESC: |
9691 | if (is_local) | |
9692 | insn = 0; | |
9693 | else | |
9694 | { | |
9695 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
9696 | if (insn & 1) | |
9697 | insn -= 5; /* THUMB */ | |
9698 | else | |
9699 | insn -= 8; /* ARM */ | |
9700 | } | |
9701 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); | |
9702 | return bfd_reloc_continue; | |
9703 | ||
9704 | case R_ARM_THM_TLS_DESCSEQ: | |
9705 | /* Thumb insn. */ | |
9706 | insn = bfd_get_16 (input_bfd, contents + rel->r_offset); | |
9707 | if ((insn & 0xff78) == 0x4478) /* add rx, pc */ | |
9708 | { | |
9709 | if (is_local) | |
9710 | /* nop */ | |
9711 | bfd_put_16 (input_bfd, 0x46c0, contents + rel->r_offset); | |
9712 | } | |
9713 | else if ((insn & 0xffc0) == 0x6840) /* ldr rx,[ry,#4] */ | |
9714 | { | |
9715 | if (is_local) | |
9716 | /* nop */ | |
9717 | bfd_put_16 (input_bfd, 0x46c0, contents + rel->r_offset); | |
9718 | else | |
9719 | /* ldr rx,[ry] */ | |
9720 | bfd_put_16 (input_bfd, insn & 0xf83f, contents + rel->r_offset); | |
9721 | } | |
9722 | else if ((insn & 0xff87) == 0x4780) /* blx rx */ | |
9723 | { | |
9724 | if (is_local) | |
9725 | /* nop */ | |
9726 | bfd_put_16 (input_bfd, 0x46c0, contents + rel->r_offset); | |
9727 | else | |
9728 | /* mov r0, rx */ | |
9729 | bfd_put_16 (input_bfd, 0x4600 | (insn & 0x78), | |
9730 | contents + rel->r_offset); | |
9731 | } | |
9732 | else | |
9733 | { | |
9734 | if ((insn & 0xf000) == 0xf000 || (insn & 0xf800) == 0xe800) | |
9735 | /* It's a 32 bit instruction, fetch the rest of it for | |
9736 | error generation. */ | |
9737 | insn = (insn << 16) | |
9738 | | bfd_get_16 (input_bfd, contents + rel->r_offset + 2); | |
9739 | (*_bfd_error_handler) | |
9740 | (_("%B(%A+0x%lx):unexpected Thumb instruction '0x%x' in TLS trampoline"), | |
9741 | input_bfd, input_sec, (unsigned long)rel->r_offset, insn); | |
9742 | return bfd_reloc_notsupported; | |
9743 | } | |
9744 | break; | |
b38cadfb | 9745 | |
0855e32b NS |
9746 | case R_ARM_TLS_DESCSEQ: |
9747 | /* arm insn. */ | |
9748 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
9749 | if ((insn & 0xffff0ff0) == 0xe08f0000) /* add rx,pc,ry */ | |
9750 | { | |
9751 | if (is_local) | |
9752 | /* mov rx, ry */ | |
9753 | bfd_put_32 (input_bfd, 0xe1a00000 | (insn & 0xffff), | |
9754 | contents + rel->r_offset); | |
9755 | } | |
9756 | else if ((insn & 0xfff00fff) == 0xe5900004) /* ldr rx,[ry,#4]*/ | |
9757 | { | |
9758 | if (is_local) | |
9759 | /* nop */ | |
9760 | bfd_put_32 (input_bfd, 0xe1a00000, contents + rel->r_offset); | |
9761 | else | |
9762 | /* ldr rx,[ry] */ | |
9763 | bfd_put_32 (input_bfd, insn & 0xfffff000, | |
9764 | contents + rel->r_offset); | |
9765 | } | |
9766 | else if ((insn & 0xfffffff0) == 0xe12fff30) /* blx rx */ | |
9767 | { | |
9768 | if (is_local) | |
9769 | /* nop */ | |
9770 | bfd_put_32 (input_bfd, 0xe1a00000, contents + rel->r_offset); | |
9771 | else | |
9772 | /* mov r0, rx */ | |
9773 | bfd_put_32 (input_bfd, 0xe1a00000 | (insn & 0xf), | |
9774 | contents + rel->r_offset); | |
9775 | } | |
9776 | else | |
9777 | { | |
9778 | (*_bfd_error_handler) | |
9779 | (_("%B(%A+0x%lx):unexpected ARM instruction '0x%x' in TLS trampoline"), | |
9780 | input_bfd, input_sec, (unsigned long)rel->r_offset, insn); | |
9781 | return bfd_reloc_notsupported; | |
9782 | } | |
9783 | break; | |
9784 | ||
9785 | case R_ARM_TLS_CALL: | |
9786 | /* GD->IE relaxation, turn the instruction into 'nop' or | |
9787 | 'ldr r0, [pc,r0]' */ | |
9788 | insn = is_local ? 0xe1a00000 : 0xe79f0000; | |
9789 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); | |
9790 | break; | |
b38cadfb | 9791 | |
0855e32b | 9792 | case R_ARM_THM_TLS_CALL: |
6a631e86 | 9793 | /* GD->IE relaxation. */ |
0855e32b NS |
9794 | if (!is_local) |
9795 | /* add r0,pc; ldr r0, [r0] */ | |
9796 | insn = 0x44786800; | |
60a019a0 | 9797 | else if (using_thumb2 (globals)) |
0855e32b NS |
9798 | /* nop.w */ |
9799 | insn = 0xf3af8000; | |
9800 | else | |
9801 | /* nop; nop */ | |
9802 | insn = 0xbf00bf00; | |
b38cadfb | 9803 | |
0855e32b NS |
9804 | bfd_put_16 (input_bfd, insn >> 16, contents + rel->r_offset); |
9805 | bfd_put_16 (input_bfd, insn & 0xffff, contents + rel->r_offset + 2); | |
9806 | break; | |
9807 | } | |
9808 | return bfd_reloc_ok; | |
9809 | } | |
9810 | ||
4962c51a MS |
9811 | /* For a given value of n, calculate the value of G_n as required to |
9812 | deal with group relocations. We return it in the form of an | |
9813 | encoded constant-and-rotation, together with the final residual. If n is | |
9814 | specified as less than zero, then final_residual is filled with the | |
9815 | input value and no further action is performed. */ | |
9816 | ||
9817 | static bfd_vma | |
9818 | calculate_group_reloc_mask (bfd_vma value, int n, bfd_vma *final_residual) | |
9819 | { | |
9820 | int current_n; | |
9821 | bfd_vma g_n; | |
9822 | bfd_vma encoded_g_n = 0; | |
9823 | bfd_vma residual = value; /* Also known as Y_n. */ | |
9824 | ||
9825 | for (current_n = 0; current_n <= n; current_n++) | |
9826 | { | |
9827 | int shift; | |
9828 | ||
9829 | /* Calculate which part of the value to mask. */ | |
9830 | if (residual == 0) | |
99059e56 | 9831 | shift = 0; |
4962c51a | 9832 | else |
99059e56 RM |
9833 | { |
9834 | int msb; | |
9835 | ||
9836 | /* Determine the most significant bit in the residual and | |
9837 | align the resulting value to a 2-bit boundary. */ | |
9838 | for (msb = 30; msb >= 0; msb -= 2) | |
9839 | if (residual & (3 << msb)) | |
9840 | break; | |
9841 | ||
9842 | /* The desired shift is now (msb - 6), or zero, whichever | |
9843 | is the greater. */ | |
9844 | shift = msb - 6; | |
9845 | if (shift < 0) | |
9846 | shift = 0; | |
9847 | } | |
4962c51a MS |
9848 | |
9849 | /* Calculate g_n in 32-bit as well as encoded constant+rotation form. */ | |
9850 | g_n = residual & (0xff << shift); | |
9851 | encoded_g_n = (g_n >> shift) | |
99059e56 | 9852 | | ((g_n <= 0xff ? 0 : (32 - shift) / 2) << 8); |
4962c51a MS |
9853 | |
9854 | /* Calculate the residual for the next time around. */ | |
9855 | residual &= ~g_n; | |
9856 | } | |
9857 | ||
9858 | *final_residual = residual; | |
9859 | ||
9860 | return encoded_g_n; | |
9861 | } | |
9862 | ||
9863 | /* Given an ARM instruction, determine whether it is an ADD or a SUB. | |
9864 | Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */ | |
906e58ca | 9865 | |
4962c51a | 9866 | static int |
906e58ca | 9867 | identify_add_or_sub (bfd_vma insn) |
4962c51a MS |
9868 | { |
9869 | int opcode = insn & 0x1e00000; | |
9870 | ||
9871 | if (opcode == 1 << 23) /* ADD */ | |
9872 | return 1; | |
9873 | ||
9874 | if (opcode == 1 << 22) /* SUB */ | |
9875 | return -1; | |
9876 | ||
9877 | return 0; | |
9878 | } | |
9879 | ||
252b5132 | 9880 | /* Perform a relocation as part of a final link. */ |
9b485d32 | 9881 | |
252b5132 | 9882 | static bfd_reloc_status_type |
57e8b36a NC |
9883 | elf32_arm_final_link_relocate (reloc_howto_type * howto, |
9884 | bfd * input_bfd, | |
9885 | bfd * output_bfd, | |
9886 | asection * input_section, | |
9887 | bfd_byte * contents, | |
9888 | Elf_Internal_Rela * rel, | |
9889 | bfd_vma value, | |
9890 | struct bfd_link_info * info, | |
9891 | asection * sym_sec, | |
9892 | const char * sym_name, | |
34e77a92 RS |
9893 | unsigned char st_type, |
9894 | enum arm_st_branch_type branch_type, | |
0945cdfd | 9895 | struct elf_link_hash_entry * h, |
f2a9dd69 | 9896 | bfd_boolean * unresolved_reloc_p, |
8029a119 | 9897 | char ** error_message) |
252b5132 RH |
9898 | { |
9899 | unsigned long r_type = howto->type; | |
9900 | unsigned long r_symndx; | |
9901 | bfd_byte * hit_data = contents + rel->r_offset; | |
252b5132 | 9902 | bfd_vma * local_got_offsets; |
0855e32b | 9903 | bfd_vma * local_tlsdesc_gotents; |
34e77a92 RS |
9904 | asection * sgot; |
9905 | asection * splt; | |
252b5132 | 9906 | asection * sreloc = NULL; |
362d30a1 | 9907 | asection * srelgot; |
252b5132 | 9908 | bfd_vma addend; |
ba96a88f | 9909 | bfd_signed_vma signed_addend; |
34e77a92 RS |
9910 | unsigned char dynreloc_st_type; |
9911 | bfd_vma dynreloc_value; | |
ba96a88f | 9912 | struct elf32_arm_link_hash_table * globals; |
34e77a92 RS |
9913 | struct elf32_arm_link_hash_entry *eh; |
9914 | union gotplt_union *root_plt; | |
9915 | struct arm_plt_info *arm_plt; | |
9916 | bfd_vma plt_offset; | |
9917 | bfd_vma gotplt_offset; | |
9918 | bfd_boolean has_iplt_entry; | |
f21f3fe0 | 9919 | |
9c504268 | 9920 | globals = elf32_arm_hash_table (info); |
4dfe6ac6 NC |
9921 | if (globals == NULL) |
9922 | return bfd_reloc_notsupported; | |
9c504268 | 9923 | |
0ffa91dd NC |
9924 | BFD_ASSERT (is_arm_elf (input_bfd)); |
9925 | ||
9926 | /* Some relocation types map to different relocations depending on the | |
9c504268 | 9927 | target. We pick the right one here. */ |
eb043451 | 9928 | r_type = arm_real_reloc_type (globals, r_type); |
0855e32b NS |
9929 | |
9930 | /* It is possible to have linker relaxations on some TLS access | |
9931 | models. Update our information here. */ | |
9932 | r_type = elf32_arm_tls_transition (info, r_type, h); | |
9933 | ||
eb043451 PB |
9934 | if (r_type != howto->type) |
9935 | howto = elf32_arm_howto_from_type (r_type); | |
9c504268 | 9936 | |
34e77a92 | 9937 | eh = (struct elf32_arm_link_hash_entry *) h; |
362d30a1 | 9938 | sgot = globals->root.sgot; |
252b5132 | 9939 | local_got_offsets = elf_local_got_offsets (input_bfd); |
0855e32b NS |
9940 | local_tlsdesc_gotents = elf32_arm_local_tlsdesc_gotent (input_bfd); |
9941 | ||
34e77a92 RS |
9942 | if (globals->root.dynamic_sections_created) |
9943 | srelgot = globals->root.srelgot; | |
9944 | else | |
9945 | srelgot = NULL; | |
9946 | ||
252b5132 RH |
9947 | r_symndx = ELF32_R_SYM (rel->r_info); |
9948 | ||
4e7fd91e | 9949 | if (globals->use_rel) |
ba96a88f | 9950 | { |
4e7fd91e PB |
9951 | addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask; |
9952 | ||
9953 | if (addend & ((howto->src_mask + 1) >> 1)) | |
9954 | { | |
9955 | signed_addend = -1; | |
9956 | signed_addend &= ~ howto->src_mask; | |
9957 | signed_addend |= addend; | |
9958 | } | |
9959 | else | |
9960 | signed_addend = addend; | |
ba96a88f NC |
9961 | } |
9962 | else | |
4e7fd91e | 9963 | addend = signed_addend = rel->r_addend; |
f21f3fe0 | 9964 | |
39f21624 NC |
9965 | /* ST_BRANCH_TO_ARM is nonsense to thumb-only targets when we |
9966 | are resolving a function call relocation. */ | |
9967 | if (using_thumb_only (globals) | |
9968 | && (r_type == R_ARM_THM_CALL | |
9969 | || r_type == R_ARM_THM_JUMP24) | |
9970 | && branch_type == ST_BRANCH_TO_ARM) | |
9971 | branch_type = ST_BRANCH_TO_THUMB; | |
9972 | ||
34e77a92 RS |
9973 | /* Record the symbol information that should be used in dynamic |
9974 | relocations. */ | |
9975 | dynreloc_st_type = st_type; | |
9976 | dynreloc_value = value; | |
9977 | if (branch_type == ST_BRANCH_TO_THUMB) | |
9978 | dynreloc_value |= 1; | |
9979 | ||
9980 | /* Find out whether the symbol has a PLT. Set ST_VALUE, BRANCH_TYPE and | |
9981 | VALUE appropriately for relocations that we resolve at link time. */ | |
9982 | has_iplt_entry = FALSE; | |
4ba2ef8f TP |
9983 | if (elf32_arm_get_plt_info (input_bfd, globals, eh, r_symndx, &root_plt, |
9984 | &arm_plt) | |
34e77a92 RS |
9985 | && root_plt->offset != (bfd_vma) -1) |
9986 | { | |
9987 | plt_offset = root_plt->offset; | |
9988 | gotplt_offset = arm_plt->got_offset; | |
9989 | ||
9990 | if (h == NULL || eh->is_iplt) | |
9991 | { | |
9992 | has_iplt_entry = TRUE; | |
9993 | splt = globals->root.iplt; | |
9994 | ||
9995 | /* Populate .iplt entries here, because not all of them will | |
9996 | be seen by finish_dynamic_symbol. The lower bit is set if | |
9997 | we have already populated the entry. */ | |
9998 | if (plt_offset & 1) | |
9999 | plt_offset--; | |
10000 | else | |
10001 | { | |
57460bcf NC |
10002 | if (elf32_arm_populate_plt_entry (output_bfd, info, root_plt, arm_plt, |
10003 | -1, dynreloc_value)) | |
10004 | root_plt->offset |= 1; | |
10005 | else | |
10006 | return bfd_reloc_notsupported; | |
34e77a92 RS |
10007 | } |
10008 | ||
10009 | /* Static relocations always resolve to the .iplt entry. */ | |
10010 | st_type = STT_FUNC; | |
10011 | value = (splt->output_section->vma | |
10012 | + splt->output_offset | |
10013 | + plt_offset); | |
10014 | branch_type = ST_BRANCH_TO_ARM; | |
10015 | ||
10016 | /* If there are non-call relocations that resolve to the .iplt | |
10017 | entry, then all dynamic ones must too. */ | |
10018 | if (arm_plt->noncall_refcount != 0) | |
10019 | { | |
10020 | dynreloc_st_type = st_type; | |
10021 | dynreloc_value = value; | |
10022 | } | |
10023 | } | |
10024 | else | |
10025 | /* We populate the .plt entry in finish_dynamic_symbol. */ | |
10026 | splt = globals->root.splt; | |
10027 | } | |
10028 | else | |
10029 | { | |
10030 | splt = NULL; | |
10031 | plt_offset = (bfd_vma) -1; | |
10032 | gotplt_offset = (bfd_vma) -1; | |
10033 | } | |
10034 | ||
252b5132 RH |
10035 | switch (r_type) |
10036 | { | |
10037 | case R_ARM_NONE: | |
28a094c2 DJ |
10038 | /* We don't need to find a value for this symbol. It's just a |
10039 | marker. */ | |
10040 | *unresolved_reloc_p = FALSE; | |
252b5132 RH |
10041 | return bfd_reloc_ok; |
10042 | ||
00a97672 RS |
10043 | case R_ARM_ABS12: |
10044 | if (!globals->vxworks_p) | |
10045 | return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend); | |
10046 | ||
252b5132 RH |
10047 | case R_ARM_PC24: |
10048 | case R_ARM_ABS32: | |
bb224fc3 | 10049 | case R_ARM_ABS32_NOI: |
252b5132 | 10050 | case R_ARM_REL32: |
bb224fc3 | 10051 | case R_ARM_REL32_NOI: |
5b5bb741 PB |
10052 | case R_ARM_CALL: |
10053 | case R_ARM_JUMP24: | |
dfc5f959 | 10054 | case R_ARM_XPC25: |
eb043451 | 10055 | case R_ARM_PREL31: |
7359ea65 | 10056 | case R_ARM_PLT32: |
7359ea65 DJ |
10057 | /* Handle relocations which should use the PLT entry. ABS32/REL32 |
10058 | will use the symbol's value, which may point to a PLT entry, but we | |
10059 | don't need to handle that here. If we created a PLT entry, all | |
5fa9e92f CL |
10060 | branches in this object should go to it, except if the PLT is too |
10061 | far away, in which case a long branch stub should be inserted. */ | |
bb224fc3 | 10062 | if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32 |
99059e56 | 10063 | && r_type != R_ARM_ABS32_NOI && r_type != R_ARM_REL32_NOI |
155d87d7 CL |
10064 | && r_type != R_ARM_CALL |
10065 | && r_type != R_ARM_JUMP24 | |
10066 | && r_type != R_ARM_PLT32) | |
34e77a92 | 10067 | && plt_offset != (bfd_vma) -1) |
7359ea65 | 10068 | { |
34e77a92 RS |
10069 | /* If we've created a .plt section, and assigned a PLT entry |
10070 | to this function, it must either be a STT_GNU_IFUNC reference | |
10071 | or not be known to bind locally. In other cases, we should | |
10072 | have cleared the PLT entry by now. */ | |
10073 | BFD_ASSERT (has_iplt_entry || !SYMBOL_CALLS_LOCAL (info, h)); | |
7359ea65 DJ |
10074 | |
10075 | value = (splt->output_section->vma | |
10076 | + splt->output_offset | |
34e77a92 | 10077 | + plt_offset); |
0945cdfd | 10078 | *unresolved_reloc_p = FALSE; |
7359ea65 DJ |
10079 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
10080 | contents, rel->r_offset, value, | |
00a97672 | 10081 | rel->r_addend); |
7359ea65 DJ |
10082 | } |
10083 | ||
67687978 PB |
10084 | /* When generating a shared object or relocatable executable, these |
10085 | relocations are copied into the output file to be resolved at | |
10086 | run time. */ | |
0e1862bb L |
10087 | if ((bfd_link_pic (info) |
10088 | || globals->root.is_relocatable_executable) | |
7359ea65 | 10089 | && (input_section->flags & SEC_ALLOC) |
4dfe6ac6 | 10090 | && !(globals->vxworks_p |
3348747a NS |
10091 | && strcmp (input_section->output_section->name, |
10092 | ".tls_vars") == 0) | |
bb224fc3 | 10093 | && ((r_type != R_ARM_REL32 && r_type != R_ARM_REL32_NOI) |
ee06dc07 | 10094 | || !SYMBOL_CALLS_LOCAL (info, h)) |
ca6b5f82 AM |
10095 | && !(input_bfd == globals->stub_bfd |
10096 | && strstr (input_section->name, STUB_SUFFIX)) | |
7359ea65 DJ |
10097 | && (h == NULL |
10098 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
10099 | || h->root.type != bfd_link_hash_undefweak) | |
10100 | && r_type != R_ARM_PC24 | |
5b5bb741 PB |
10101 | && r_type != R_ARM_CALL |
10102 | && r_type != R_ARM_JUMP24 | |
ee06dc07 | 10103 | && r_type != R_ARM_PREL31 |
7359ea65 | 10104 | && r_type != R_ARM_PLT32) |
252b5132 | 10105 | { |
947216bf | 10106 | Elf_Internal_Rela outrel; |
b34976b6 | 10107 | bfd_boolean skip, relocate; |
f21f3fe0 | 10108 | |
52db4ec2 JW |
10109 | if ((r_type == R_ARM_REL32 || r_type == R_ARM_REL32_NOI) |
10110 | && !h->def_regular) | |
10111 | { | |
10112 | char *v = _("shared object"); | |
10113 | ||
0e1862bb | 10114 | if (bfd_link_executable (info)) |
52db4ec2 JW |
10115 | v = _("PIE executable"); |
10116 | ||
10117 | (*_bfd_error_handler) | |
10118 | (_("%B: relocation %s against external or undefined symbol `%s'" | |
10119 | " can not be used when making a %s; recompile with -fPIC"), input_bfd, | |
10120 | elf32_arm_howto_table_1[r_type].name, h->root.root.string, v); | |
10121 | return bfd_reloc_notsupported; | |
10122 | } | |
10123 | ||
0945cdfd DJ |
10124 | *unresolved_reloc_p = FALSE; |
10125 | ||
34e77a92 | 10126 | if (sreloc == NULL && globals->root.dynamic_sections_created) |
252b5132 | 10127 | { |
83bac4b0 NC |
10128 | sreloc = _bfd_elf_get_dynamic_reloc_section (input_bfd, input_section, |
10129 | ! globals->use_rel); | |
f21f3fe0 | 10130 | |
83bac4b0 | 10131 | if (sreloc == NULL) |
252b5132 | 10132 | return bfd_reloc_notsupported; |
252b5132 | 10133 | } |
f21f3fe0 | 10134 | |
b34976b6 AM |
10135 | skip = FALSE; |
10136 | relocate = FALSE; | |
f21f3fe0 | 10137 | |
00a97672 | 10138 | outrel.r_addend = addend; |
c629eae0 JJ |
10139 | outrel.r_offset = |
10140 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
10141 | rel->r_offset); | |
10142 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 10143 | skip = TRUE; |
0bb2d96a | 10144 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 10145 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
10146 | outrel.r_offset += (input_section->output_section->vma |
10147 | + input_section->output_offset); | |
f21f3fe0 | 10148 | |
252b5132 | 10149 | if (skip) |
0bb2d96a | 10150 | memset (&outrel, 0, sizeof outrel); |
5e681ec4 PB |
10151 | else if (h != NULL |
10152 | && h->dynindx != -1 | |
0e1862bb | 10153 | && (!bfd_link_pic (info) |
a496fbc8 | 10154 | || !SYMBOLIC_BIND (info, h) |
f5385ebf | 10155 | || !h->def_regular)) |
5e681ec4 | 10156 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
252b5132 RH |
10157 | else |
10158 | { | |
a16385dc MM |
10159 | int symbol; |
10160 | ||
5e681ec4 | 10161 | /* This symbol is local, or marked to become local. */ |
34e77a92 | 10162 | BFD_ASSERT (r_type == R_ARM_ABS32 || r_type == R_ARM_ABS32_NOI); |
a16385dc | 10163 | if (globals->symbian_p) |
6366ff1e | 10164 | { |
74541ad4 AM |
10165 | asection *osec; |
10166 | ||
6366ff1e MM |
10167 | /* On Symbian OS, the data segment and text segement |
10168 | can be relocated independently. Therefore, we | |
10169 | must indicate the segment to which this | |
10170 | relocation is relative. The BPABI allows us to | |
10171 | use any symbol in the right segment; we just use | |
10172 | the section symbol as it is convenient. (We | |
10173 | cannot use the symbol given by "h" directly as it | |
74541ad4 AM |
10174 | will not appear in the dynamic symbol table.) |
10175 | ||
10176 | Note that the dynamic linker ignores the section | |
10177 | symbol value, so we don't subtract osec->vma | |
10178 | from the emitted reloc addend. */ | |
10dbd1f3 | 10179 | if (sym_sec) |
74541ad4 | 10180 | osec = sym_sec->output_section; |
10dbd1f3 | 10181 | else |
74541ad4 AM |
10182 | osec = input_section->output_section; |
10183 | symbol = elf_section_data (osec)->dynindx; | |
10184 | if (symbol == 0) | |
10185 | { | |
10186 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
10187 | ||
10188 | if ((osec->flags & SEC_READONLY) == 0 | |
10189 | && htab->data_index_section != NULL) | |
10190 | osec = htab->data_index_section; | |
10191 | else | |
10192 | osec = htab->text_index_section; | |
10193 | symbol = elf_section_data (osec)->dynindx; | |
10194 | } | |
6366ff1e MM |
10195 | BFD_ASSERT (symbol != 0); |
10196 | } | |
a16385dc MM |
10197 | else |
10198 | /* On SVR4-ish systems, the dynamic loader cannot | |
10199 | relocate the text and data segments independently, | |
10200 | so the symbol does not matter. */ | |
10201 | symbol = 0; | |
34e77a92 RS |
10202 | if (dynreloc_st_type == STT_GNU_IFUNC) |
10203 | /* We have an STT_GNU_IFUNC symbol that doesn't resolve | |
10204 | to the .iplt entry. Instead, every non-call reference | |
10205 | must use an R_ARM_IRELATIVE relocation to obtain the | |
10206 | correct run-time address. */ | |
10207 | outrel.r_info = ELF32_R_INFO (symbol, R_ARM_IRELATIVE); | |
10208 | else | |
10209 | outrel.r_info = ELF32_R_INFO (symbol, R_ARM_RELATIVE); | |
00a97672 RS |
10210 | if (globals->use_rel) |
10211 | relocate = TRUE; | |
10212 | else | |
34e77a92 | 10213 | outrel.r_addend += dynreloc_value; |
252b5132 | 10214 | } |
f21f3fe0 | 10215 | |
47beaa6a | 10216 | elf32_arm_add_dynreloc (output_bfd, info, sreloc, &outrel); |
9a5aca8c | 10217 | |
f21f3fe0 | 10218 | /* If this reloc is against an external symbol, we do not want to |
252b5132 | 10219 | fiddle with the addend. Otherwise, we need to include the symbol |
9b485d32 | 10220 | value so that it becomes an addend for the dynamic reloc. */ |
252b5132 RH |
10221 | if (! relocate) |
10222 | return bfd_reloc_ok; | |
9a5aca8c | 10223 | |
f21f3fe0 | 10224 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
34e77a92 RS |
10225 | contents, rel->r_offset, |
10226 | dynreloc_value, (bfd_vma) 0); | |
252b5132 RH |
10227 | } |
10228 | else switch (r_type) | |
10229 | { | |
00a97672 RS |
10230 | case R_ARM_ABS12: |
10231 | return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend); | |
10232 | ||
dfc5f959 | 10233 | case R_ARM_XPC25: /* Arm BLX instruction. */ |
5b5bb741 PB |
10234 | case R_ARM_CALL: |
10235 | case R_ARM_JUMP24: | |
8029a119 | 10236 | case R_ARM_PC24: /* Arm B/BL instruction. */ |
7359ea65 | 10237 | case R_ARM_PLT32: |
906e58ca | 10238 | { |
906e58ca NC |
10239 | struct elf32_arm_stub_hash_entry *stub_entry = NULL; |
10240 | ||
dfc5f959 | 10241 | if (r_type == R_ARM_XPC25) |
252b5132 | 10242 | { |
dfc5f959 NC |
10243 | /* Check for Arm calling Arm function. */ |
10244 | /* FIXME: Should we translate the instruction into a BL | |
10245 | instruction instead ? */ | |
35fc36a8 | 10246 | if (branch_type != ST_BRANCH_TO_THUMB) |
d003868e AM |
10247 | (*_bfd_error_handler) |
10248 | (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."), | |
10249 | input_bfd, | |
10250 | h ? h->root.root.string : "(local)"); | |
dfc5f959 | 10251 | } |
155d87d7 | 10252 | else if (r_type == R_ARM_PC24) |
dfc5f959 NC |
10253 | { |
10254 | /* Check for Arm calling Thumb function. */ | |
35fc36a8 | 10255 | if (branch_type == ST_BRANCH_TO_THUMB) |
dfc5f959 | 10256 | { |
f2a9dd69 DJ |
10257 | if (elf32_arm_to_thumb_stub (info, sym_name, input_bfd, |
10258 | output_bfd, input_section, | |
10259 | hit_data, sym_sec, rel->r_offset, | |
10260 | signed_addend, value, | |
10261 | error_message)) | |
10262 | return bfd_reloc_ok; | |
10263 | else | |
10264 | return bfd_reloc_dangerous; | |
dfc5f959 | 10265 | } |
252b5132 | 10266 | } |
ba96a88f | 10267 | |
906e58ca | 10268 | /* Check if a stub has to be inserted because the |
8029a119 | 10269 | destination is too far or we are changing mode. */ |
155d87d7 CL |
10270 | if ( r_type == R_ARM_CALL |
10271 | || r_type == R_ARM_JUMP24 | |
10272 | || r_type == R_ARM_PLT32) | |
906e58ca | 10273 | { |
fe33d2fa CL |
10274 | enum elf32_arm_stub_type stub_type = arm_stub_none; |
10275 | struct elf32_arm_link_hash_entry *hash; | |
10276 | ||
10277 | hash = (struct elf32_arm_link_hash_entry *) h; | |
10278 | stub_type = arm_type_of_stub (info, input_section, rel, | |
34e77a92 RS |
10279 | st_type, &branch_type, |
10280 | hash, value, sym_sec, | |
fe33d2fa | 10281 | input_bfd, sym_name); |
5fa9e92f | 10282 | |
fe33d2fa | 10283 | if (stub_type != arm_stub_none) |
906e58ca NC |
10284 | { |
10285 | /* The target is out of reach, so redirect the | |
10286 | branch to the local stub for this function. */ | |
906e58ca NC |
10287 | stub_entry = elf32_arm_get_stub_entry (input_section, |
10288 | sym_sec, h, | |
fe33d2fa CL |
10289 | rel, globals, |
10290 | stub_type); | |
9cd3e4e5 NC |
10291 | { |
10292 | if (stub_entry != NULL) | |
10293 | value = (stub_entry->stub_offset | |
10294 | + stub_entry->stub_sec->output_offset | |
10295 | + stub_entry->stub_sec->output_section->vma); | |
10296 | ||
10297 | if (plt_offset != (bfd_vma) -1) | |
10298 | *unresolved_reloc_p = FALSE; | |
10299 | } | |
906e58ca | 10300 | } |
fe33d2fa CL |
10301 | else |
10302 | { | |
10303 | /* If the call goes through a PLT entry, make sure to | |
10304 | check distance to the right destination address. */ | |
34e77a92 | 10305 | if (plt_offset != (bfd_vma) -1) |
fe33d2fa CL |
10306 | { |
10307 | value = (splt->output_section->vma | |
10308 | + splt->output_offset | |
34e77a92 | 10309 | + plt_offset); |
fe33d2fa CL |
10310 | *unresolved_reloc_p = FALSE; |
10311 | /* The PLT entry is in ARM mode, regardless of the | |
10312 | target function. */ | |
35fc36a8 | 10313 | branch_type = ST_BRANCH_TO_ARM; |
fe33d2fa CL |
10314 | } |
10315 | } | |
906e58ca NC |
10316 | } |
10317 | ||
dea514f5 PB |
10318 | /* The ARM ELF ABI says that this reloc is computed as: S - P + A |
10319 | where: | |
10320 | S is the address of the symbol in the relocation. | |
10321 | P is address of the instruction being relocated. | |
10322 | A is the addend (extracted from the instruction) in bytes. | |
10323 | ||
10324 | S is held in 'value'. | |
10325 | P is the base address of the section containing the | |
10326 | instruction plus the offset of the reloc into that | |
10327 | section, ie: | |
10328 | (input_section->output_section->vma + | |
10329 | input_section->output_offset + | |
10330 | rel->r_offset). | |
10331 | A is the addend, converted into bytes, ie: | |
10332 | (signed_addend * 4) | |
10333 | ||
10334 | Note: None of these operations have knowledge of the pipeline | |
10335 | size of the processor, thus it is up to the assembler to | |
10336 | encode this information into the addend. */ | |
10337 | value -= (input_section->output_section->vma | |
10338 | + input_section->output_offset); | |
10339 | value -= rel->r_offset; | |
4e7fd91e PB |
10340 | if (globals->use_rel) |
10341 | value += (signed_addend << howto->size); | |
10342 | else | |
10343 | /* RELA addends do not have to be adjusted by howto->size. */ | |
10344 | value += signed_addend; | |
23080146 | 10345 | |
dcb5e6e6 NC |
10346 | signed_addend = value; |
10347 | signed_addend >>= howto->rightshift; | |
9a5aca8c | 10348 | |
5ab79981 | 10349 | /* A branch to an undefined weak symbol is turned into a jump to |
ffcb4889 | 10350 | the next instruction unless a PLT entry will be created. |
77b4f08f | 10351 | Do the same for local undefined symbols (but not for STN_UNDEF). |
cd1dac3d DG |
10352 | The jump to the next instruction is optimized as a NOP depending |
10353 | on the architecture. */ | |
ffcb4889 | 10354 | if (h ? (h->root.type == bfd_link_hash_undefweak |
34e77a92 | 10355 | && plt_offset == (bfd_vma) -1) |
77b4f08f | 10356 | : r_symndx != STN_UNDEF && bfd_is_und_section (sym_sec)) |
5ab79981 | 10357 | { |
cd1dac3d DG |
10358 | value = (bfd_get_32 (input_bfd, hit_data) & 0xf0000000); |
10359 | ||
10360 | if (arch_has_arm_nop (globals)) | |
10361 | value |= 0x0320f000; | |
10362 | else | |
10363 | value |= 0x01a00000; /* Using pre-UAL nop: mov r0, r0. */ | |
5ab79981 PB |
10364 | } |
10365 | else | |
59f2c4e7 | 10366 | { |
9b485d32 | 10367 | /* Perform a signed range check. */ |
dcb5e6e6 | 10368 | if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1)) |
59f2c4e7 NC |
10369 | || signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1))) |
10370 | return bfd_reloc_overflow; | |
9a5aca8c | 10371 | |
5ab79981 | 10372 | addend = (value & 2); |
39b41c9c | 10373 | |
5ab79981 PB |
10374 | value = (signed_addend & howto->dst_mask) |
10375 | | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask)); | |
39b41c9c | 10376 | |
5ab79981 PB |
10377 | if (r_type == R_ARM_CALL) |
10378 | { | |
155d87d7 | 10379 | /* Set the H bit in the BLX instruction. */ |
35fc36a8 | 10380 | if (branch_type == ST_BRANCH_TO_THUMB) |
155d87d7 CL |
10381 | { |
10382 | if (addend) | |
10383 | value |= (1 << 24); | |
10384 | else | |
10385 | value &= ~(bfd_vma)(1 << 24); | |
10386 | } | |
10387 | ||
5ab79981 | 10388 | /* Select the correct instruction (BL or BLX). */ |
906e58ca | 10389 | /* Only if we are not handling a BL to a stub. In this |
8029a119 | 10390 | case, mode switching is performed by the stub. */ |
35fc36a8 | 10391 | if (branch_type == ST_BRANCH_TO_THUMB && !stub_entry) |
5ab79981 | 10392 | value |= (1 << 28); |
63e1a0fc | 10393 | else if (stub_entry || branch_type != ST_BRANCH_UNKNOWN) |
5ab79981 PB |
10394 | { |
10395 | value &= ~(bfd_vma)(1 << 28); | |
10396 | value |= (1 << 24); | |
10397 | } | |
39b41c9c PB |
10398 | } |
10399 | } | |
906e58ca | 10400 | } |
252b5132 | 10401 | break; |
f21f3fe0 | 10402 | |
252b5132 RH |
10403 | case R_ARM_ABS32: |
10404 | value += addend; | |
35fc36a8 | 10405 | if (branch_type == ST_BRANCH_TO_THUMB) |
252b5132 RH |
10406 | value |= 1; |
10407 | break; | |
f21f3fe0 | 10408 | |
bb224fc3 MS |
10409 | case R_ARM_ABS32_NOI: |
10410 | value += addend; | |
10411 | break; | |
10412 | ||
252b5132 | 10413 | case R_ARM_REL32: |
a8bc6c78 | 10414 | value += addend; |
35fc36a8 | 10415 | if (branch_type == ST_BRANCH_TO_THUMB) |
a8bc6c78 | 10416 | value |= 1; |
252b5132 | 10417 | value -= (input_section->output_section->vma |
62efb346 | 10418 | + input_section->output_offset + rel->r_offset); |
252b5132 | 10419 | break; |
eb043451 | 10420 | |
bb224fc3 MS |
10421 | case R_ARM_REL32_NOI: |
10422 | value += addend; | |
10423 | value -= (input_section->output_section->vma | |
10424 | + input_section->output_offset + rel->r_offset); | |
10425 | break; | |
10426 | ||
eb043451 PB |
10427 | case R_ARM_PREL31: |
10428 | value -= (input_section->output_section->vma | |
10429 | + input_section->output_offset + rel->r_offset); | |
10430 | value += signed_addend; | |
10431 | if (! h || h->root.type != bfd_link_hash_undefweak) | |
10432 | { | |
8029a119 | 10433 | /* Check for overflow. */ |
eb043451 PB |
10434 | if ((value ^ (value >> 1)) & (1 << 30)) |
10435 | return bfd_reloc_overflow; | |
10436 | } | |
10437 | value &= 0x7fffffff; | |
10438 | value |= (bfd_get_32 (input_bfd, hit_data) & 0x80000000); | |
35fc36a8 | 10439 | if (branch_type == ST_BRANCH_TO_THUMB) |
eb043451 PB |
10440 | value |= 1; |
10441 | break; | |
252b5132 | 10442 | } |
f21f3fe0 | 10443 | |
252b5132 RH |
10444 | bfd_put_32 (input_bfd, value, hit_data); |
10445 | return bfd_reloc_ok; | |
10446 | ||
10447 | case R_ARM_ABS8: | |
fd0fd00c MJ |
10448 | /* PR 16202: Refectch the addend using the correct size. */ |
10449 | if (globals->use_rel) | |
10450 | addend = bfd_get_8 (input_bfd, hit_data); | |
252b5132 | 10451 | value += addend; |
4e67d4ca DG |
10452 | |
10453 | /* There is no way to tell whether the user intended to use a signed or | |
10454 | unsigned addend. When checking for overflow we accept either, | |
10455 | as specified by the AAELF. */ | |
10456 | if ((long) value > 0xff || (long) value < -0x80) | |
252b5132 RH |
10457 | return bfd_reloc_overflow; |
10458 | ||
10459 | bfd_put_8 (input_bfd, value, hit_data); | |
10460 | return bfd_reloc_ok; | |
10461 | ||
10462 | case R_ARM_ABS16: | |
fd0fd00c MJ |
10463 | /* PR 16202: Refectch the addend using the correct size. */ |
10464 | if (globals->use_rel) | |
10465 | addend = bfd_get_16 (input_bfd, hit_data); | |
252b5132 RH |
10466 | value += addend; |
10467 | ||
4e67d4ca DG |
10468 | /* See comment for R_ARM_ABS8. */ |
10469 | if ((long) value > 0xffff || (long) value < -0x8000) | |
252b5132 RH |
10470 | return bfd_reloc_overflow; |
10471 | ||
10472 | bfd_put_16 (input_bfd, value, hit_data); | |
10473 | return bfd_reloc_ok; | |
10474 | ||
252b5132 | 10475 | case R_ARM_THM_ABS5: |
9b485d32 | 10476 | /* Support ldr and str instructions for the thumb. */ |
4e7fd91e PB |
10477 | if (globals->use_rel) |
10478 | { | |
10479 | /* Need to refetch addend. */ | |
10480 | addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask; | |
10481 | /* ??? Need to determine shift amount from operand size. */ | |
10482 | addend >>= howto->rightshift; | |
10483 | } | |
252b5132 RH |
10484 | value += addend; |
10485 | ||
10486 | /* ??? Isn't value unsigned? */ | |
10487 | if ((long) value > 0x1f || (long) value < -0x10) | |
10488 | return bfd_reloc_overflow; | |
10489 | ||
10490 | /* ??? Value needs to be properly shifted into place first. */ | |
10491 | value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f; | |
10492 | bfd_put_16 (input_bfd, value, hit_data); | |
10493 | return bfd_reloc_ok; | |
10494 | ||
2cab6cc3 MS |
10495 | case R_ARM_THM_ALU_PREL_11_0: |
10496 | /* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */ | |
10497 | { | |
10498 | bfd_vma insn; | |
10499 | bfd_signed_vma relocation; | |
10500 | ||
10501 | insn = (bfd_get_16 (input_bfd, hit_data) << 16) | |
99059e56 | 10502 | | bfd_get_16 (input_bfd, hit_data + 2); |
2cab6cc3 | 10503 | |
99059e56 RM |
10504 | if (globals->use_rel) |
10505 | { | |
10506 | signed_addend = (insn & 0xff) | ((insn & 0x7000) >> 4) | |
10507 | | ((insn & (1 << 26)) >> 15); | |
10508 | if (insn & 0xf00000) | |
10509 | signed_addend = -signed_addend; | |
10510 | } | |
2cab6cc3 MS |
10511 | |
10512 | relocation = value + signed_addend; | |
79f08007 | 10513 | relocation -= Pa (input_section->output_section->vma |
99059e56 RM |
10514 | + input_section->output_offset |
10515 | + rel->r_offset); | |
2cab6cc3 | 10516 | |
b6518b38 | 10517 | value = relocation; |
2cab6cc3 | 10518 | |
99059e56 RM |
10519 | if (value >= 0x1000) |
10520 | return bfd_reloc_overflow; | |
2cab6cc3 MS |
10521 | |
10522 | insn = (insn & 0xfb0f8f00) | (value & 0xff) | |
99059e56 RM |
10523 | | ((value & 0x700) << 4) |
10524 | | ((value & 0x800) << 15); | |
10525 | if (relocation < 0) | |
10526 | insn |= 0xa00000; | |
2cab6cc3 MS |
10527 | |
10528 | bfd_put_16 (input_bfd, insn >> 16, hit_data); | |
10529 | bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2); | |
10530 | ||
99059e56 | 10531 | return bfd_reloc_ok; |
2cab6cc3 MS |
10532 | } |
10533 | ||
e1ec24c6 NC |
10534 | case R_ARM_THM_PC8: |
10535 | /* PR 10073: This reloc is not generated by the GNU toolchain, | |
10536 | but it is supported for compatibility with third party libraries | |
10537 | generated by other compilers, specifically the ARM/IAR. */ | |
10538 | { | |
10539 | bfd_vma insn; | |
10540 | bfd_signed_vma relocation; | |
10541 | ||
10542 | insn = bfd_get_16 (input_bfd, hit_data); | |
10543 | ||
99059e56 | 10544 | if (globals->use_rel) |
79f08007 | 10545 | addend = ((((insn & 0x00ff) << 2) + 4) & 0x3ff) -4; |
e1ec24c6 NC |
10546 | |
10547 | relocation = value + addend; | |
79f08007 | 10548 | relocation -= Pa (input_section->output_section->vma |
99059e56 RM |
10549 | + input_section->output_offset |
10550 | + rel->r_offset); | |
e1ec24c6 | 10551 | |
b6518b38 | 10552 | value = relocation; |
e1ec24c6 NC |
10553 | |
10554 | /* We do not check for overflow of this reloc. Although strictly | |
10555 | speaking this is incorrect, it appears to be necessary in order | |
10556 | to work with IAR generated relocs. Since GCC and GAS do not | |
10557 | generate R_ARM_THM_PC8 relocs, the lack of a check should not be | |
10558 | a problem for them. */ | |
10559 | value &= 0x3fc; | |
10560 | ||
10561 | insn = (insn & 0xff00) | (value >> 2); | |
10562 | ||
10563 | bfd_put_16 (input_bfd, insn, hit_data); | |
10564 | ||
99059e56 | 10565 | return bfd_reloc_ok; |
e1ec24c6 NC |
10566 | } |
10567 | ||
2cab6cc3 MS |
10568 | case R_ARM_THM_PC12: |
10569 | /* Corresponds to: ldr.w reg, [pc, #offset]. */ | |
10570 | { | |
10571 | bfd_vma insn; | |
10572 | bfd_signed_vma relocation; | |
10573 | ||
10574 | insn = (bfd_get_16 (input_bfd, hit_data) << 16) | |
99059e56 | 10575 | | bfd_get_16 (input_bfd, hit_data + 2); |
2cab6cc3 | 10576 | |
99059e56 RM |
10577 | if (globals->use_rel) |
10578 | { | |
10579 | signed_addend = insn & 0xfff; | |
10580 | if (!(insn & (1 << 23))) | |
10581 | signed_addend = -signed_addend; | |
10582 | } | |
2cab6cc3 MS |
10583 | |
10584 | relocation = value + signed_addend; | |
79f08007 | 10585 | relocation -= Pa (input_section->output_section->vma |
99059e56 RM |
10586 | + input_section->output_offset |
10587 | + rel->r_offset); | |
2cab6cc3 | 10588 | |
b6518b38 | 10589 | value = relocation; |
2cab6cc3 | 10590 | |
99059e56 RM |
10591 | if (value >= 0x1000) |
10592 | return bfd_reloc_overflow; | |
2cab6cc3 MS |
10593 | |
10594 | insn = (insn & 0xff7ff000) | value; | |
99059e56 RM |
10595 | if (relocation >= 0) |
10596 | insn |= (1 << 23); | |
2cab6cc3 MS |
10597 | |
10598 | bfd_put_16 (input_bfd, insn >> 16, hit_data); | |
10599 | bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2); | |
10600 | ||
99059e56 | 10601 | return bfd_reloc_ok; |
2cab6cc3 MS |
10602 | } |
10603 | ||
dfc5f959 | 10604 | case R_ARM_THM_XPC22: |
c19d1205 | 10605 | case R_ARM_THM_CALL: |
bd97cb95 | 10606 | case R_ARM_THM_JUMP24: |
dfc5f959 | 10607 | /* Thumb BL (branch long instruction). */ |
252b5132 | 10608 | { |
b34976b6 | 10609 | bfd_vma relocation; |
99059e56 | 10610 | bfd_vma reloc_sign; |
b34976b6 AM |
10611 | bfd_boolean overflow = FALSE; |
10612 | bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); | |
10613 | bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); | |
e95de063 MS |
10614 | bfd_signed_vma reloc_signed_max; |
10615 | bfd_signed_vma reloc_signed_min; | |
b34976b6 | 10616 | bfd_vma check; |
252b5132 | 10617 | bfd_signed_vma signed_check; |
e95de063 | 10618 | int bitsize; |
cd1dac3d | 10619 | const int thumb2 = using_thumb2 (globals); |
5e866f5a | 10620 | const int thumb2_bl = using_thumb2_bl (globals); |
252b5132 | 10621 | |
5ab79981 | 10622 | /* A branch to an undefined weak symbol is turned into a jump to |
cd1dac3d DG |
10623 | the next instruction unless a PLT entry will be created. |
10624 | The jump to the next instruction is optimized as a NOP.W for | |
10625 | Thumb-2 enabled architectures. */ | |
19540007 | 10626 | if (h && h->root.type == bfd_link_hash_undefweak |
34e77a92 | 10627 | && plt_offset == (bfd_vma) -1) |
5ab79981 | 10628 | { |
60a019a0 | 10629 | if (thumb2) |
cd1dac3d DG |
10630 | { |
10631 | bfd_put_16 (input_bfd, 0xf3af, hit_data); | |
10632 | bfd_put_16 (input_bfd, 0x8000, hit_data + 2); | |
10633 | } | |
10634 | else | |
10635 | { | |
10636 | bfd_put_16 (input_bfd, 0xe000, hit_data); | |
10637 | bfd_put_16 (input_bfd, 0xbf00, hit_data + 2); | |
10638 | } | |
5ab79981 PB |
10639 | return bfd_reloc_ok; |
10640 | } | |
10641 | ||
e95de063 | 10642 | /* Fetch the addend. We use the Thumb-2 encoding (backwards compatible |
99059e56 | 10643 | with Thumb-1) involving the J1 and J2 bits. */ |
4e7fd91e PB |
10644 | if (globals->use_rel) |
10645 | { | |
99059e56 RM |
10646 | bfd_vma s = (upper_insn & (1 << 10)) >> 10; |
10647 | bfd_vma upper = upper_insn & 0x3ff; | |
10648 | bfd_vma lower = lower_insn & 0x7ff; | |
e95de063 MS |
10649 | bfd_vma j1 = (lower_insn & (1 << 13)) >> 13; |
10650 | bfd_vma j2 = (lower_insn & (1 << 11)) >> 11; | |
99059e56 RM |
10651 | bfd_vma i1 = j1 ^ s ? 0 : 1; |
10652 | bfd_vma i2 = j2 ^ s ? 0 : 1; | |
e95de063 | 10653 | |
99059e56 RM |
10654 | addend = (i1 << 23) | (i2 << 22) | (upper << 12) | (lower << 1); |
10655 | /* Sign extend. */ | |
10656 | addend = (addend | ((s ? 0 : 1) << 24)) - (1 << 24); | |
e95de063 | 10657 | |
4e7fd91e PB |
10658 | signed_addend = addend; |
10659 | } | |
cb1afa5c | 10660 | |
dfc5f959 NC |
10661 | if (r_type == R_ARM_THM_XPC22) |
10662 | { | |
10663 | /* Check for Thumb to Thumb call. */ | |
10664 | /* FIXME: Should we translate the instruction into a BL | |
10665 | instruction instead ? */ | |
35fc36a8 | 10666 | if (branch_type == ST_BRANCH_TO_THUMB) |
d003868e AM |
10667 | (*_bfd_error_handler) |
10668 | (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."), | |
10669 | input_bfd, | |
10670 | h ? h->root.root.string : "(local)"); | |
dfc5f959 NC |
10671 | } |
10672 | else | |
252b5132 | 10673 | { |
dfc5f959 NC |
10674 | /* If it is not a call to Thumb, assume call to Arm. |
10675 | If it is a call relative to a section name, then it is not a | |
b7693d02 DJ |
10676 | function call at all, but rather a long jump. Calls through |
10677 | the PLT do not require stubs. */ | |
34e77a92 | 10678 | if (branch_type == ST_BRANCH_TO_ARM && plt_offset == (bfd_vma) -1) |
dfc5f959 | 10679 | { |
bd97cb95 | 10680 | if (globals->use_blx && r_type == R_ARM_THM_CALL) |
39b41c9c PB |
10681 | { |
10682 | /* Convert BL to BLX. */ | |
10683 | lower_insn = (lower_insn & ~0x1000) | 0x0800; | |
10684 | } | |
155d87d7 CL |
10685 | else if (( r_type != R_ARM_THM_CALL) |
10686 | && (r_type != R_ARM_THM_JUMP24)) | |
8029a119 NC |
10687 | { |
10688 | if (elf32_thumb_to_arm_stub | |
10689 | (info, sym_name, input_bfd, output_bfd, input_section, | |
10690 | hit_data, sym_sec, rel->r_offset, signed_addend, value, | |
10691 | error_message)) | |
10692 | return bfd_reloc_ok; | |
10693 | else | |
10694 | return bfd_reloc_dangerous; | |
10695 | } | |
da5938a2 | 10696 | } |
35fc36a8 RS |
10697 | else if (branch_type == ST_BRANCH_TO_THUMB |
10698 | && globals->use_blx | |
bd97cb95 | 10699 | && r_type == R_ARM_THM_CALL) |
39b41c9c PB |
10700 | { |
10701 | /* Make sure this is a BL. */ | |
10702 | lower_insn |= 0x1800; | |
10703 | } | |
252b5132 | 10704 | } |
f21f3fe0 | 10705 | |
fe33d2fa | 10706 | enum elf32_arm_stub_type stub_type = arm_stub_none; |
155d87d7 | 10707 | if (r_type == R_ARM_THM_CALL || r_type == R_ARM_THM_JUMP24) |
906e58ca NC |
10708 | { |
10709 | /* Check if a stub has to be inserted because the destination | |
8029a119 | 10710 | is too far. */ |
fe33d2fa CL |
10711 | struct elf32_arm_stub_hash_entry *stub_entry; |
10712 | struct elf32_arm_link_hash_entry *hash; | |
10713 | ||
10714 | hash = (struct elf32_arm_link_hash_entry *) h; | |
10715 | ||
10716 | stub_type = arm_type_of_stub (info, input_section, rel, | |
34e77a92 RS |
10717 | st_type, &branch_type, |
10718 | hash, value, sym_sec, | |
fe33d2fa CL |
10719 | input_bfd, sym_name); |
10720 | ||
10721 | if (stub_type != arm_stub_none) | |
906e58ca NC |
10722 | { |
10723 | /* The target is out of reach or we are changing modes, so | |
10724 | redirect the branch to the local stub for this | |
10725 | function. */ | |
10726 | stub_entry = elf32_arm_get_stub_entry (input_section, | |
10727 | sym_sec, h, | |
fe33d2fa CL |
10728 | rel, globals, |
10729 | stub_type); | |
906e58ca | 10730 | if (stub_entry != NULL) |
9cd3e4e5 NC |
10731 | { |
10732 | value = (stub_entry->stub_offset | |
10733 | + stub_entry->stub_sec->output_offset | |
10734 | + stub_entry->stub_sec->output_section->vma); | |
10735 | ||
10736 | if (plt_offset != (bfd_vma) -1) | |
10737 | *unresolved_reloc_p = FALSE; | |
10738 | } | |
906e58ca | 10739 | |
f4ac8484 | 10740 | /* If this call becomes a call to Arm, force BLX. */ |
155d87d7 | 10741 | if (globals->use_blx && (r_type == R_ARM_THM_CALL)) |
f4ac8484 DJ |
10742 | { |
10743 | if ((stub_entry | |
10744 | && !arm_stub_is_thumb (stub_entry->stub_type)) | |
35fc36a8 | 10745 | || branch_type != ST_BRANCH_TO_THUMB) |
f4ac8484 DJ |
10746 | lower_insn = (lower_insn & ~0x1000) | 0x0800; |
10747 | } | |
906e58ca NC |
10748 | } |
10749 | } | |
10750 | ||
fe33d2fa | 10751 | /* Handle calls via the PLT. */ |
34e77a92 | 10752 | if (stub_type == arm_stub_none && plt_offset != (bfd_vma) -1) |
fe33d2fa CL |
10753 | { |
10754 | value = (splt->output_section->vma | |
10755 | + splt->output_offset | |
34e77a92 | 10756 | + plt_offset); |
fe33d2fa | 10757 | |
eed94f8f NC |
10758 | if (globals->use_blx |
10759 | && r_type == R_ARM_THM_CALL | |
10760 | && ! using_thumb_only (globals)) | |
fe33d2fa CL |
10761 | { |
10762 | /* If the Thumb BLX instruction is available, convert | |
10763 | the BL to a BLX instruction to call the ARM-mode | |
10764 | PLT entry. */ | |
10765 | lower_insn = (lower_insn & ~0x1000) | 0x0800; | |
35fc36a8 | 10766 | branch_type = ST_BRANCH_TO_ARM; |
fe33d2fa CL |
10767 | } |
10768 | else | |
10769 | { | |
eed94f8f NC |
10770 | if (! using_thumb_only (globals)) |
10771 | /* Target the Thumb stub before the ARM PLT entry. */ | |
10772 | value -= PLT_THUMB_STUB_SIZE; | |
35fc36a8 | 10773 | branch_type = ST_BRANCH_TO_THUMB; |
fe33d2fa CL |
10774 | } |
10775 | *unresolved_reloc_p = FALSE; | |
10776 | } | |
10777 | ||
ba96a88f | 10778 | relocation = value + signed_addend; |
f21f3fe0 | 10779 | |
252b5132 | 10780 | relocation -= (input_section->output_section->vma |
ba96a88f NC |
10781 | + input_section->output_offset |
10782 | + rel->r_offset); | |
9a5aca8c | 10783 | |
252b5132 RH |
10784 | check = relocation >> howto->rightshift; |
10785 | ||
10786 | /* If this is a signed value, the rightshift just dropped | |
10787 | leading 1 bits (assuming twos complement). */ | |
10788 | if ((bfd_signed_vma) relocation >= 0) | |
10789 | signed_check = check; | |
10790 | else | |
10791 | signed_check = check | ~((bfd_vma) -1 >> howto->rightshift); | |
10792 | ||
e95de063 MS |
10793 | /* Calculate the permissable maximum and minimum values for |
10794 | this relocation according to whether we're relocating for | |
10795 | Thumb-2 or not. */ | |
10796 | bitsize = howto->bitsize; | |
5e866f5a | 10797 | if (!thumb2_bl) |
e95de063 | 10798 | bitsize -= 2; |
f6ebfac0 | 10799 | reloc_signed_max = (1 << (bitsize - 1)) - 1; |
e95de063 MS |
10800 | reloc_signed_min = ~reloc_signed_max; |
10801 | ||
252b5132 | 10802 | /* Assumes two's complement. */ |
ba96a88f | 10803 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) |
b34976b6 | 10804 | overflow = TRUE; |
252b5132 | 10805 | |
bd97cb95 | 10806 | if ((lower_insn & 0x5000) == 0x4000) |
c62e1cc3 NC |
10807 | /* For a BLX instruction, make sure that the relocation is rounded up |
10808 | to a word boundary. This follows the semantics of the instruction | |
10809 | which specifies that bit 1 of the target address will come from bit | |
10810 | 1 of the base address. */ | |
10811 | relocation = (relocation + 2) & ~ 3; | |
cb1afa5c | 10812 | |
e95de063 MS |
10813 | /* Put RELOCATION back into the insn. Assumes two's complement. |
10814 | We use the Thumb-2 encoding, which is safe even if dealing with | |
10815 | a Thumb-1 instruction by virtue of our overflow check above. */ | |
99059e56 | 10816 | reloc_sign = (signed_check < 0) ? 1 : 0; |
e95de063 | 10817 | upper_insn = (upper_insn & ~(bfd_vma) 0x7ff) |
99059e56 RM |
10818 | | ((relocation >> 12) & 0x3ff) |
10819 | | (reloc_sign << 10); | |
906e58ca | 10820 | lower_insn = (lower_insn & ~(bfd_vma) 0x2fff) |
99059e56 RM |
10821 | | (((!((relocation >> 23) & 1)) ^ reloc_sign) << 13) |
10822 | | (((!((relocation >> 22) & 1)) ^ reloc_sign) << 11) | |
10823 | | ((relocation >> 1) & 0x7ff); | |
c62e1cc3 | 10824 | |
252b5132 RH |
10825 | /* Put the relocated value back in the object file: */ |
10826 | bfd_put_16 (input_bfd, upper_insn, hit_data); | |
10827 | bfd_put_16 (input_bfd, lower_insn, hit_data + 2); | |
10828 | ||
10829 | return (overflow ? bfd_reloc_overflow : bfd_reloc_ok); | |
10830 | } | |
10831 | break; | |
10832 | ||
c19d1205 ZW |
10833 | case R_ARM_THM_JUMP19: |
10834 | /* Thumb32 conditional branch instruction. */ | |
10835 | { | |
10836 | bfd_vma relocation; | |
10837 | bfd_boolean overflow = FALSE; | |
10838 | bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); | |
10839 | bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); | |
a00a1f35 MS |
10840 | bfd_signed_vma reloc_signed_max = 0xffffe; |
10841 | bfd_signed_vma reloc_signed_min = -0x100000; | |
c19d1205 | 10842 | bfd_signed_vma signed_check; |
c5423981 TG |
10843 | enum elf32_arm_stub_type stub_type = arm_stub_none; |
10844 | struct elf32_arm_stub_hash_entry *stub_entry; | |
10845 | struct elf32_arm_link_hash_entry *hash; | |
c19d1205 ZW |
10846 | |
10847 | /* Need to refetch the addend, reconstruct the top three bits, | |
10848 | and squish the two 11 bit pieces together. */ | |
10849 | if (globals->use_rel) | |
10850 | { | |
10851 | bfd_vma S = (upper_insn & 0x0400) >> 10; | |
a00a1f35 | 10852 | bfd_vma upper = (upper_insn & 0x003f); |
c19d1205 ZW |
10853 | bfd_vma J1 = (lower_insn & 0x2000) >> 13; |
10854 | bfd_vma J2 = (lower_insn & 0x0800) >> 11; | |
10855 | bfd_vma lower = (lower_insn & 0x07ff); | |
10856 | ||
a00a1f35 MS |
10857 | upper |= J1 << 6; |
10858 | upper |= J2 << 7; | |
10859 | upper |= (!S) << 8; | |
c19d1205 ZW |
10860 | upper -= 0x0100; /* Sign extend. */ |
10861 | ||
10862 | addend = (upper << 12) | (lower << 1); | |
10863 | signed_addend = addend; | |
10864 | } | |
10865 | ||
bd97cb95 | 10866 | /* Handle calls via the PLT. */ |
34e77a92 | 10867 | if (plt_offset != (bfd_vma) -1) |
bd97cb95 DJ |
10868 | { |
10869 | value = (splt->output_section->vma | |
10870 | + splt->output_offset | |
34e77a92 | 10871 | + plt_offset); |
bd97cb95 DJ |
10872 | /* Target the Thumb stub before the ARM PLT entry. */ |
10873 | value -= PLT_THUMB_STUB_SIZE; | |
10874 | *unresolved_reloc_p = FALSE; | |
10875 | } | |
10876 | ||
c5423981 TG |
10877 | hash = (struct elf32_arm_link_hash_entry *)h; |
10878 | ||
10879 | stub_type = arm_type_of_stub (info, input_section, rel, | |
10880 | st_type, &branch_type, | |
10881 | hash, value, sym_sec, | |
10882 | input_bfd, sym_name); | |
10883 | if (stub_type != arm_stub_none) | |
10884 | { | |
10885 | stub_entry = elf32_arm_get_stub_entry (input_section, | |
10886 | sym_sec, h, | |
10887 | rel, globals, | |
10888 | stub_type); | |
10889 | if (stub_entry != NULL) | |
10890 | { | |
10891 | value = (stub_entry->stub_offset | |
10892 | + stub_entry->stub_sec->output_offset | |
10893 | + stub_entry->stub_sec->output_section->vma); | |
10894 | } | |
10895 | } | |
c19d1205 | 10896 | |
99059e56 | 10897 | relocation = value + signed_addend; |
c19d1205 ZW |
10898 | relocation -= (input_section->output_section->vma |
10899 | + input_section->output_offset | |
10900 | + rel->r_offset); | |
a00a1f35 | 10901 | signed_check = (bfd_signed_vma) relocation; |
c19d1205 | 10902 | |
c19d1205 ZW |
10903 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) |
10904 | overflow = TRUE; | |
10905 | ||
10906 | /* Put RELOCATION back into the insn. */ | |
10907 | { | |
10908 | bfd_vma S = (relocation & 0x00100000) >> 20; | |
10909 | bfd_vma J2 = (relocation & 0x00080000) >> 19; | |
10910 | bfd_vma J1 = (relocation & 0x00040000) >> 18; | |
10911 | bfd_vma hi = (relocation & 0x0003f000) >> 12; | |
10912 | bfd_vma lo = (relocation & 0x00000ffe) >> 1; | |
10913 | ||
a00a1f35 | 10914 | upper_insn = (upper_insn & 0xfbc0) | (S << 10) | hi; |
c19d1205 ZW |
10915 | lower_insn = (lower_insn & 0xd000) | (J1 << 13) | (J2 << 11) | lo; |
10916 | } | |
10917 | ||
10918 | /* Put the relocated value back in the object file: */ | |
10919 | bfd_put_16 (input_bfd, upper_insn, hit_data); | |
10920 | bfd_put_16 (input_bfd, lower_insn, hit_data + 2); | |
10921 | ||
10922 | return (overflow ? bfd_reloc_overflow : bfd_reloc_ok); | |
10923 | } | |
10924 | ||
10925 | case R_ARM_THM_JUMP11: | |
10926 | case R_ARM_THM_JUMP8: | |
10927 | case R_ARM_THM_JUMP6: | |
51c5503b NC |
10928 | /* Thumb B (branch) instruction). */ |
10929 | { | |
6cf9e9fe | 10930 | bfd_signed_vma relocation; |
51c5503b NC |
10931 | bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1; |
10932 | bfd_signed_vma reloc_signed_min = ~ reloc_signed_max; | |
51c5503b NC |
10933 | bfd_signed_vma signed_check; |
10934 | ||
c19d1205 ZW |
10935 | /* CZB cannot jump backward. */ |
10936 | if (r_type == R_ARM_THM_JUMP6) | |
10937 | reloc_signed_min = 0; | |
10938 | ||
4e7fd91e | 10939 | if (globals->use_rel) |
6cf9e9fe | 10940 | { |
4e7fd91e PB |
10941 | /* Need to refetch addend. */ |
10942 | addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask; | |
10943 | if (addend & ((howto->src_mask + 1) >> 1)) | |
10944 | { | |
10945 | signed_addend = -1; | |
10946 | signed_addend &= ~ howto->src_mask; | |
10947 | signed_addend |= addend; | |
10948 | } | |
10949 | else | |
10950 | signed_addend = addend; | |
10951 | /* The value in the insn has been right shifted. We need to | |
10952 | undo this, so that we can perform the address calculation | |
10953 | in terms of bytes. */ | |
10954 | signed_addend <<= howto->rightshift; | |
6cf9e9fe | 10955 | } |
6cf9e9fe | 10956 | relocation = value + signed_addend; |
51c5503b NC |
10957 | |
10958 | relocation -= (input_section->output_section->vma | |
10959 | + input_section->output_offset | |
10960 | + rel->r_offset); | |
10961 | ||
6cf9e9fe NC |
10962 | relocation >>= howto->rightshift; |
10963 | signed_check = relocation; | |
c19d1205 ZW |
10964 | |
10965 | if (r_type == R_ARM_THM_JUMP6) | |
10966 | relocation = ((relocation & 0x0020) << 4) | ((relocation & 0x001f) << 3); | |
10967 | else | |
10968 | relocation &= howto->dst_mask; | |
51c5503b | 10969 | relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask)); |
cedb70c5 | 10970 | |
51c5503b NC |
10971 | bfd_put_16 (input_bfd, relocation, hit_data); |
10972 | ||
10973 | /* Assumes two's complement. */ | |
10974 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) | |
10975 | return bfd_reloc_overflow; | |
10976 | ||
10977 | return bfd_reloc_ok; | |
10978 | } | |
cedb70c5 | 10979 | |
8375c36b PB |
10980 | case R_ARM_ALU_PCREL7_0: |
10981 | case R_ARM_ALU_PCREL15_8: | |
10982 | case R_ARM_ALU_PCREL23_15: | |
10983 | { | |
10984 | bfd_vma insn; | |
10985 | bfd_vma relocation; | |
10986 | ||
10987 | insn = bfd_get_32 (input_bfd, hit_data); | |
4e7fd91e PB |
10988 | if (globals->use_rel) |
10989 | { | |
10990 | /* Extract the addend. */ | |
10991 | addend = (insn & 0xff) << ((insn & 0xf00) >> 7); | |
10992 | signed_addend = addend; | |
10993 | } | |
8375c36b PB |
10994 | relocation = value + signed_addend; |
10995 | ||
10996 | relocation -= (input_section->output_section->vma | |
10997 | + input_section->output_offset | |
10998 | + rel->r_offset); | |
10999 | insn = (insn & ~0xfff) | |
11000 | | ((howto->bitpos << 7) & 0xf00) | |
11001 | | ((relocation >> howto->bitpos) & 0xff); | |
11002 | bfd_put_32 (input_bfd, value, hit_data); | |
11003 | } | |
11004 | return bfd_reloc_ok; | |
11005 | ||
252b5132 RH |
11006 | case R_ARM_GNU_VTINHERIT: |
11007 | case R_ARM_GNU_VTENTRY: | |
11008 | return bfd_reloc_ok; | |
11009 | ||
c19d1205 | 11010 | case R_ARM_GOTOFF32: |
252b5132 | 11011 | /* Relocation is relative to the start of the |
99059e56 | 11012 | global offset table. */ |
252b5132 RH |
11013 | |
11014 | BFD_ASSERT (sgot != NULL); | |
11015 | if (sgot == NULL) | |
99059e56 | 11016 | return bfd_reloc_notsupported; |
9a5aca8c | 11017 | |
cedb70c5 | 11018 | /* If we are addressing a Thumb function, we need to adjust the |
ee29b9fb RE |
11019 | address by one, so that attempts to call the function pointer will |
11020 | correctly interpret it as Thumb code. */ | |
35fc36a8 | 11021 | if (branch_type == ST_BRANCH_TO_THUMB) |
ee29b9fb RE |
11022 | value += 1; |
11023 | ||
252b5132 | 11024 | /* Note that sgot->output_offset is not involved in this |
99059e56 RM |
11025 | calculation. We always want the start of .got. If we |
11026 | define _GLOBAL_OFFSET_TABLE in a different way, as is | |
11027 | permitted by the ABI, we might have to change this | |
11028 | calculation. */ | |
252b5132 | 11029 | value -= sgot->output_section->vma; |
f21f3fe0 | 11030 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 | 11031 | contents, rel->r_offset, value, |
00a97672 | 11032 | rel->r_addend); |
252b5132 RH |
11033 | |
11034 | case R_ARM_GOTPC: | |
a7c10850 | 11035 | /* Use global offset table as symbol value. */ |
252b5132 | 11036 | BFD_ASSERT (sgot != NULL); |
f21f3fe0 | 11037 | |
252b5132 | 11038 | if (sgot == NULL) |
99059e56 | 11039 | return bfd_reloc_notsupported; |
252b5132 | 11040 | |
0945cdfd | 11041 | *unresolved_reloc_p = FALSE; |
252b5132 | 11042 | value = sgot->output_section->vma; |
f21f3fe0 | 11043 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 | 11044 | contents, rel->r_offset, value, |
00a97672 | 11045 | rel->r_addend); |
f21f3fe0 | 11046 | |
252b5132 | 11047 | case R_ARM_GOT32: |
eb043451 | 11048 | case R_ARM_GOT_PREL: |
252b5132 | 11049 | /* Relocation is to the entry for this symbol in the |
99059e56 | 11050 | global offset table. */ |
252b5132 RH |
11051 | if (sgot == NULL) |
11052 | return bfd_reloc_notsupported; | |
f21f3fe0 | 11053 | |
34e77a92 RS |
11054 | if (dynreloc_st_type == STT_GNU_IFUNC |
11055 | && plt_offset != (bfd_vma) -1 | |
11056 | && (h == NULL || SYMBOL_REFERENCES_LOCAL (info, h))) | |
11057 | { | |
11058 | /* We have a relocation against a locally-binding STT_GNU_IFUNC | |
11059 | symbol, and the relocation resolves directly to the runtime | |
11060 | target rather than to the .iplt entry. This means that any | |
11061 | .got entry would be the same value as the .igot.plt entry, | |
11062 | so there's no point creating both. */ | |
11063 | sgot = globals->root.igotplt; | |
11064 | value = sgot->output_offset + gotplt_offset; | |
11065 | } | |
11066 | else if (h != NULL) | |
252b5132 RH |
11067 | { |
11068 | bfd_vma off; | |
f21f3fe0 | 11069 | |
252b5132 RH |
11070 | off = h->got.offset; |
11071 | BFD_ASSERT (off != (bfd_vma) -1); | |
b436d854 | 11072 | if ((off & 1) != 0) |
252b5132 | 11073 | { |
b436d854 RS |
11074 | /* We have already processsed one GOT relocation against |
11075 | this symbol. */ | |
11076 | off &= ~1; | |
11077 | if (globals->root.dynamic_sections_created | |
11078 | && !SYMBOL_REFERENCES_LOCAL (info, h)) | |
11079 | *unresolved_reloc_p = FALSE; | |
11080 | } | |
11081 | else | |
11082 | { | |
11083 | Elf_Internal_Rela outrel; | |
11084 | ||
6f820c85 | 11085 | if (h->dynindx != -1 && !SYMBOL_REFERENCES_LOCAL (info, h)) |
b436d854 RS |
11086 | { |
11087 | /* If the symbol doesn't resolve locally in a static | |
11088 | object, we have an undefined reference. If the | |
11089 | symbol doesn't resolve locally in a dynamic object, | |
11090 | it should be resolved by the dynamic linker. */ | |
11091 | if (globals->root.dynamic_sections_created) | |
11092 | { | |
11093 | outrel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT); | |
11094 | *unresolved_reloc_p = FALSE; | |
11095 | } | |
11096 | else | |
11097 | outrel.r_info = 0; | |
11098 | outrel.r_addend = 0; | |
11099 | } | |
252b5132 RH |
11100 | else |
11101 | { | |
34e77a92 | 11102 | if (dynreloc_st_type == STT_GNU_IFUNC) |
99059e56 | 11103 | outrel.r_info = ELF32_R_INFO (0, R_ARM_IRELATIVE); |
5025eb7c AO |
11104 | else if (bfd_link_pic (info) |
11105 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
11106 | || h->root.type != bfd_link_hash_undefweak)) | |
99059e56 RM |
11107 | outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); |
11108 | else | |
11109 | outrel.r_info = 0; | |
34e77a92 | 11110 | outrel.r_addend = dynreloc_value; |
b436d854 | 11111 | } |
ee29b9fb | 11112 | |
b436d854 RS |
11113 | /* The GOT entry is initialized to zero by default. |
11114 | See if we should install a different value. */ | |
11115 | if (outrel.r_addend != 0 | |
11116 | && (outrel.r_info == 0 || globals->use_rel)) | |
11117 | { | |
11118 | bfd_put_32 (output_bfd, outrel.r_addend, | |
11119 | sgot->contents + off); | |
11120 | outrel.r_addend = 0; | |
252b5132 | 11121 | } |
f21f3fe0 | 11122 | |
b436d854 RS |
11123 | if (outrel.r_info != 0) |
11124 | { | |
11125 | outrel.r_offset = (sgot->output_section->vma | |
11126 | + sgot->output_offset | |
11127 | + off); | |
11128 | elf32_arm_add_dynreloc (output_bfd, info, srelgot, &outrel); | |
11129 | } | |
11130 | h->got.offset |= 1; | |
11131 | } | |
252b5132 RH |
11132 | value = sgot->output_offset + off; |
11133 | } | |
11134 | else | |
11135 | { | |
11136 | bfd_vma off; | |
f21f3fe0 | 11137 | |
5025eb7c AO |
11138 | BFD_ASSERT (local_got_offsets != NULL |
11139 | && local_got_offsets[r_symndx] != (bfd_vma) -1); | |
f21f3fe0 | 11140 | |
252b5132 | 11141 | off = local_got_offsets[r_symndx]; |
f21f3fe0 | 11142 | |
252b5132 RH |
11143 | /* The offset must always be a multiple of 4. We use the |
11144 | least significant bit to record whether we have already | |
9b485d32 | 11145 | generated the necessary reloc. */ |
252b5132 RH |
11146 | if ((off & 1) != 0) |
11147 | off &= ~1; | |
11148 | else | |
11149 | { | |
00a97672 | 11150 | if (globals->use_rel) |
34e77a92 | 11151 | bfd_put_32 (output_bfd, dynreloc_value, sgot->contents + off); |
f21f3fe0 | 11152 | |
0e1862bb | 11153 | if (bfd_link_pic (info) || dynreloc_st_type == STT_GNU_IFUNC) |
252b5132 | 11154 | { |
947216bf | 11155 | Elf_Internal_Rela outrel; |
f21f3fe0 | 11156 | |
34e77a92 | 11157 | outrel.r_addend = addend + dynreloc_value; |
252b5132 | 11158 | outrel.r_offset = (sgot->output_section->vma |
f21f3fe0 | 11159 | + sgot->output_offset |
252b5132 | 11160 | + off); |
34e77a92 | 11161 | if (dynreloc_st_type == STT_GNU_IFUNC) |
99059e56 | 11162 | outrel.r_info = ELF32_R_INFO (0, R_ARM_IRELATIVE); |
34e77a92 RS |
11163 | else |
11164 | outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); | |
47beaa6a | 11165 | elf32_arm_add_dynreloc (output_bfd, info, srelgot, &outrel); |
252b5132 | 11166 | } |
f21f3fe0 | 11167 | |
252b5132 RH |
11168 | local_got_offsets[r_symndx] |= 1; |
11169 | } | |
f21f3fe0 | 11170 | |
252b5132 RH |
11171 | value = sgot->output_offset + off; |
11172 | } | |
eb043451 PB |
11173 | if (r_type != R_ARM_GOT32) |
11174 | value += sgot->output_section->vma; | |
9a5aca8c | 11175 | |
f21f3fe0 | 11176 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 | 11177 | contents, rel->r_offset, value, |
00a97672 | 11178 | rel->r_addend); |
f21f3fe0 | 11179 | |
ba93b8ac DJ |
11180 | case R_ARM_TLS_LDO32: |
11181 | value = value - dtpoff_base (info); | |
11182 | ||
11183 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
00a97672 RS |
11184 | contents, rel->r_offset, value, |
11185 | rel->r_addend); | |
ba93b8ac DJ |
11186 | |
11187 | case R_ARM_TLS_LDM32: | |
11188 | { | |
11189 | bfd_vma off; | |
11190 | ||
362d30a1 | 11191 | if (sgot == NULL) |
ba93b8ac DJ |
11192 | abort (); |
11193 | ||
11194 | off = globals->tls_ldm_got.offset; | |
11195 | ||
11196 | if ((off & 1) != 0) | |
11197 | off &= ~1; | |
11198 | else | |
11199 | { | |
11200 | /* If we don't know the module number, create a relocation | |
11201 | for it. */ | |
0e1862bb | 11202 | if (bfd_link_pic (info)) |
ba93b8ac DJ |
11203 | { |
11204 | Elf_Internal_Rela outrel; | |
ba93b8ac | 11205 | |
362d30a1 | 11206 | if (srelgot == NULL) |
ba93b8ac DJ |
11207 | abort (); |
11208 | ||
00a97672 | 11209 | outrel.r_addend = 0; |
362d30a1 RS |
11210 | outrel.r_offset = (sgot->output_section->vma |
11211 | + sgot->output_offset + off); | |
ba93b8ac DJ |
11212 | outrel.r_info = ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32); |
11213 | ||
00a97672 RS |
11214 | if (globals->use_rel) |
11215 | bfd_put_32 (output_bfd, outrel.r_addend, | |
362d30a1 | 11216 | sgot->contents + off); |
ba93b8ac | 11217 | |
47beaa6a | 11218 | elf32_arm_add_dynreloc (output_bfd, info, srelgot, &outrel); |
ba93b8ac DJ |
11219 | } |
11220 | else | |
362d30a1 | 11221 | bfd_put_32 (output_bfd, 1, sgot->contents + off); |
ba93b8ac DJ |
11222 | |
11223 | globals->tls_ldm_got.offset |= 1; | |
11224 | } | |
11225 | ||
362d30a1 | 11226 | value = sgot->output_section->vma + sgot->output_offset + off |
ba93b8ac DJ |
11227 | - (input_section->output_section->vma + input_section->output_offset + rel->r_offset); |
11228 | ||
11229 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
11230 | contents, rel->r_offset, value, | |
00a97672 | 11231 | rel->r_addend); |
ba93b8ac DJ |
11232 | } |
11233 | ||
0855e32b NS |
11234 | case R_ARM_TLS_CALL: |
11235 | case R_ARM_THM_TLS_CALL: | |
ba93b8ac DJ |
11236 | case R_ARM_TLS_GD32: |
11237 | case R_ARM_TLS_IE32: | |
0855e32b NS |
11238 | case R_ARM_TLS_GOTDESC: |
11239 | case R_ARM_TLS_DESCSEQ: | |
11240 | case R_ARM_THM_TLS_DESCSEQ: | |
ba93b8ac | 11241 | { |
0855e32b NS |
11242 | bfd_vma off, offplt; |
11243 | int indx = 0; | |
ba93b8ac DJ |
11244 | char tls_type; |
11245 | ||
0855e32b | 11246 | BFD_ASSERT (sgot != NULL); |
ba93b8ac | 11247 | |
ba93b8ac DJ |
11248 | if (h != NULL) |
11249 | { | |
11250 | bfd_boolean dyn; | |
11251 | dyn = globals->root.dynamic_sections_created; | |
0e1862bb L |
11252 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
11253 | bfd_link_pic (info), | |
11254 | h) | |
11255 | && (!bfd_link_pic (info) | |
ba93b8ac DJ |
11256 | || !SYMBOL_REFERENCES_LOCAL (info, h))) |
11257 | { | |
11258 | *unresolved_reloc_p = FALSE; | |
11259 | indx = h->dynindx; | |
11260 | } | |
11261 | off = h->got.offset; | |
0855e32b | 11262 | offplt = elf32_arm_hash_entry (h)->tlsdesc_got; |
ba93b8ac DJ |
11263 | tls_type = ((struct elf32_arm_link_hash_entry *) h)->tls_type; |
11264 | } | |
11265 | else | |
11266 | { | |
0855e32b | 11267 | BFD_ASSERT (local_got_offsets != NULL); |
ba93b8ac | 11268 | off = local_got_offsets[r_symndx]; |
0855e32b | 11269 | offplt = local_tlsdesc_gotents[r_symndx]; |
ba93b8ac DJ |
11270 | tls_type = elf32_arm_local_got_tls_type (input_bfd)[r_symndx]; |
11271 | } | |
11272 | ||
0855e32b | 11273 | /* Linker relaxations happens from one of the |
b38cadfb | 11274 | R_ARM_{GOTDESC,CALL,DESCSEQ} relocations to IE or LE. */ |
0855e32b | 11275 | if (ELF32_R_TYPE(rel->r_info) != r_type) |
b38cadfb | 11276 | tls_type = GOT_TLS_IE; |
0855e32b NS |
11277 | |
11278 | BFD_ASSERT (tls_type != GOT_UNKNOWN); | |
ba93b8ac DJ |
11279 | |
11280 | if ((off & 1) != 0) | |
11281 | off &= ~1; | |
11282 | else | |
11283 | { | |
11284 | bfd_boolean need_relocs = FALSE; | |
11285 | Elf_Internal_Rela outrel; | |
ba93b8ac DJ |
11286 | int cur_off = off; |
11287 | ||
11288 | /* The GOT entries have not been initialized yet. Do it | |
11289 | now, and emit any relocations. If both an IE GOT and a | |
11290 | GD GOT are necessary, we emit the GD first. */ | |
11291 | ||
0e1862bb | 11292 | if ((bfd_link_pic (info) || indx != 0) |
ba93b8ac DJ |
11293 | && (h == NULL |
11294 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
11295 | || h->root.type != bfd_link_hash_undefweak)) | |
11296 | { | |
11297 | need_relocs = TRUE; | |
0855e32b | 11298 | BFD_ASSERT (srelgot != NULL); |
ba93b8ac DJ |
11299 | } |
11300 | ||
0855e32b NS |
11301 | if (tls_type & GOT_TLS_GDESC) |
11302 | { | |
47beaa6a RS |
11303 | bfd_byte *loc; |
11304 | ||
0855e32b NS |
11305 | /* We should have relaxed, unless this is an undefined |
11306 | weak symbol. */ | |
11307 | BFD_ASSERT ((h && (h->root.type == bfd_link_hash_undefweak)) | |
0e1862bb | 11308 | || bfd_link_pic (info)); |
0855e32b | 11309 | BFD_ASSERT (globals->sgotplt_jump_table_size + offplt + 8 |
99059e56 | 11310 | <= globals->root.sgotplt->size); |
0855e32b NS |
11311 | |
11312 | outrel.r_addend = 0; | |
11313 | outrel.r_offset = (globals->root.sgotplt->output_section->vma | |
11314 | + globals->root.sgotplt->output_offset | |
11315 | + offplt | |
11316 | + globals->sgotplt_jump_table_size); | |
b38cadfb | 11317 | |
0855e32b NS |
11318 | outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DESC); |
11319 | sreloc = globals->root.srelplt; | |
11320 | loc = sreloc->contents; | |
11321 | loc += globals->next_tls_desc_index++ * RELOC_SIZE (globals); | |
11322 | BFD_ASSERT (loc + RELOC_SIZE (globals) | |
99059e56 | 11323 | <= sreloc->contents + sreloc->size); |
0855e32b NS |
11324 | |
11325 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
11326 | ||
11327 | /* For globals, the first word in the relocation gets | |
11328 | the relocation index and the top bit set, or zero, | |
11329 | if we're binding now. For locals, it gets the | |
11330 | symbol's offset in the tls section. */ | |
99059e56 | 11331 | bfd_put_32 (output_bfd, |
0855e32b NS |
11332 | !h ? value - elf_hash_table (info)->tls_sec->vma |
11333 | : info->flags & DF_BIND_NOW ? 0 | |
11334 | : 0x80000000 | ELF32_R_SYM (outrel.r_info), | |
b38cadfb NC |
11335 | globals->root.sgotplt->contents + offplt |
11336 | + globals->sgotplt_jump_table_size); | |
11337 | ||
0855e32b | 11338 | /* Second word in the relocation is always zero. */ |
99059e56 | 11339 | bfd_put_32 (output_bfd, 0, |
b38cadfb NC |
11340 | globals->root.sgotplt->contents + offplt |
11341 | + globals->sgotplt_jump_table_size + 4); | |
0855e32b | 11342 | } |
ba93b8ac DJ |
11343 | if (tls_type & GOT_TLS_GD) |
11344 | { | |
11345 | if (need_relocs) | |
11346 | { | |
00a97672 | 11347 | outrel.r_addend = 0; |
362d30a1 RS |
11348 | outrel.r_offset = (sgot->output_section->vma |
11349 | + sgot->output_offset | |
00a97672 | 11350 | + cur_off); |
ba93b8ac | 11351 | outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DTPMOD32); |
ba93b8ac | 11352 | |
00a97672 RS |
11353 | if (globals->use_rel) |
11354 | bfd_put_32 (output_bfd, outrel.r_addend, | |
362d30a1 | 11355 | sgot->contents + cur_off); |
00a97672 | 11356 | |
47beaa6a | 11357 | elf32_arm_add_dynreloc (output_bfd, info, srelgot, &outrel); |
ba93b8ac DJ |
11358 | |
11359 | if (indx == 0) | |
11360 | bfd_put_32 (output_bfd, value - dtpoff_base (info), | |
362d30a1 | 11361 | sgot->contents + cur_off + 4); |
ba93b8ac DJ |
11362 | else |
11363 | { | |
00a97672 | 11364 | outrel.r_addend = 0; |
ba93b8ac DJ |
11365 | outrel.r_info = ELF32_R_INFO (indx, |
11366 | R_ARM_TLS_DTPOFF32); | |
11367 | outrel.r_offset += 4; | |
00a97672 RS |
11368 | |
11369 | if (globals->use_rel) | |
11370 | bfd_put_32 (output_bfd, outrel.r_addend, | |
362d30a1 | 11371 | sgot->contents + cur_off + 4); |
00a97672 | 11372 | |
47beaa6a RS |
11373 | elf32_arm_add_dynreloc (output_bfd, info, |
11374 | srelgot, &outrel); | |
ba93b8ac DJ |
11375 | } |
11376 | } | |
11377 | else | |
11378 | { | |
11379 | /* If we are not emitting relocations for a | |
11380 | general dynamic reference, then we must be in a | |
11381 | static link or an executable link with the | |
11382 | symbol binding locally. Mark it as belonging | |
11383 | to module 1, the executable. */ | |
11384 | bfd_put_32 (output_bfd, 1, | |
362d30a1 | 11385 | sgot->contents + cur_off); |
ba93b8ac | 11386 | bfd_put_32 (output_bfd, value - dtpoff_base (info), |
362d30a1 | 11387 | sgot->contents + cur_off + 4); |
ba93b8ac DJ |
11388 | } |
11389 | ||
11390 | cur_off += 8; | |
11391 | } | |
11392 | ||
11393 | if (tls_type & GOT_TLS_IE) | |
11394 | { | |
11395 | if (need_relocs) | |
11396 | { | |
00a97672 RS |
11397 | if (indx == 0) |
11398 | outrel.r_addend = value - dtpoff_base (info); | |
11399 | else | |
11400 | outrel.r_addend = 0; | |
362d30a1 RS |
11401 | outrel.r_offset = (sgot->output_section->vma |
11402 | + sgot->output_offset | |
ba93b8ac DJ |
11403 | + cur_off); |
11404 | outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_TPOFF32); | |
11405 | ||
00a97672 RS |
11406 | if (globals->use_rel) |
11407 | bfd_put_32 (output_bfd, outrel.r_addend, | |
362d30a1 | 11408 | sgot->contents + cur_off); |
ba93b8ac | 11409 | |
47beaa6a | 11410 | elf32_arm_add_dynreloc (output_bfd, info, srelgot, &outrel); |
ba93b8ac DJ |
11411 | } |
11412 | else | |
11413 | bfd_put_32 (output_bfd, tpoff (info, value), | |
362d30a1 | 11414 | sgot->contents + cur_off); |
ba93b8ac DJ |
11415 | cur_off += 4; |
11416 | } | |
11417 | ||
11418 | if (h != NULL) | |
11419 | h->got.offset |= 1; | |
11420 | else | |
11421 | local_got_offsets[r_symndx] |= 1; | |
11422 | } | |
11423 | ||
11424 | if ((tls_type & GOT_TLS_GD) && r_type != R_ARM_TLS_GD32) | |
11425 | off += 8; | |
0855e32b NS |
11426 | else if (tls_type & GOT_TLS_GDESC) |
11427 | off = offplt; | |
11428 | ||
11429 | if (ELF32_R_TYPE(rel->r_info) == R_ARM_TLS_CALL | |
11430 | || ELF32_R_TYPE(rel->r_info) == R_ARM_THM_TLS_CALL) | |
11431 | { | |
11432 | bfd_signed_vma offset; | |
12352d3f PB |
11433 | /* TLS stubs are arm mode. The original symbol is a |
11434 | data object, so branch_type is bogus. */ | |
11435 | branch_type = ST_BRANCH_TO_ARM; | |
0855e32b | 11436 | enum elf32_arm_stub_type stub_type |
34e77a92 RS |
11437 | = arm_type_of_stub (info, input_section, rel, |
11438 | st_type, &branch_type, | |
0855e32b NS |
11439 | (struct elf32_arm_link_hash_entry *)h, |
11440 | globals->tls_trampoline, globals->root.splt, | |
11441 | input_bfd, sym_name); | |
11442 | ||
11443 | if (stub_type != arm_stub_none) | |
11444 | { | |
11445 | struct elf32_arm_stub_hash_entry *stub_entry | |
11446 | = elf32_arm_get_stub_entry | |
11447 | (input_section, globals->root.splt, 0, rel, | |
11448 | globals, stub_type); | |
11449 | offset = (stub_entry->stub_offset | |
11450 | + stub_entry->stub_sec->output_offset | |
11451 | + stub_entry->stub_sec->output_section->vma); | |
11452 | } | |
11453 | else | |
11454 | offset = (globals->root.splt->output_section->vma | |
11455 | + globals->root.splt->output_offset | |
11456 | + globals->tls_trampoline); | |
11457 | ||
11458 | if (ELF32_R_TYPE(rel->r_info) == R_ARM_TLS_CALL) | |
11459 | { | |
11460 | unsigned long inst; | |
b38cadfb NC |
11461 | |
11462 | offset -= (input_section->output_section->vma | |
11463 | + input_section->output_offset | |
11464 | + rel->r_offset + 8); | |
0855e32b NS |
11465 | |
11466 | inst = offset >> 2; | |
11467 | inst &= 0x00ffffff; | |
11468 | value = inst | (globals->use_blx ? 0xfa000000 : 0xeb000000); | |
11469 | } | |
11470 | else | |
11471 | { | |
11472 | /* Thumb blx encodes the offset in a complicated | |
11473 | fashion. */ | |
11474 | unsigned upper_insn, lower_insn; | |
11475 | unsigned neg; | |
11476 | ||
b38cadfb NC |
11477 | offset -= (input_section->output_section->vma |
11478 | + input_section->output_offset | |
0855e32b | 11479 | + rel->r_offset + 4); |
b38cadfb | 11480 | |
12352d3f PB |
11481 | if (stub_type != arm_stub_none |
11482 | && arm_stub_is_thumb (stub_type)) | |
11483 | { | |
11484 | lower_insn = 0xd000; | |
11485 | } | |
11486 | else | |
11487 | { | |
11488 | lower_insn = 0xc000; | |
6a631e86 | 11489 | /* Round up the offset to a word boundary. */ |
12352d3f PB |
11490 | offset = (offset + 2) & ~2; |
11491 | } | |
11492 | ||
0855e32b NS |
11493 | neg = offset < 0; |
11494 | upper_insn = (0xf000 | |
11495 | | ((offset >> 12) & 0x3ff) | |
11496 | | (neg << 10)); | |
12352d3f | 11497 | lower_insn |= (((!((offset >> 23) & 1)) ^ neg) << 13) |
0855e32b | 11498 | | (((!((offset >> 22) & 1)) ^ neg) << 11) |
12352d3f | 11499 | | ((offset >> 1) & 0x7ff); |
0855e32b NS |
11500 | bfd_put_16 (input_bfd, upper_insn, hit_data); |
11501 | bfd_put_16 (input_bfd, lower_insn, hit_data + 2); | |
11502 | return bfd_reloc_ok; | |
11503 | } | |
11504 | } | |
11505 | /* These relocations needs special care, as besides the fact | |
11506 | they point somewhere in .gotplt, the addend must be | |
11507 | adjusted accordingly depending on the type of instruction | |
6a631e86 | 11508 | we refer to. */ |
0855e32b NS |
11509 | else if ((r_type == R_ARM_TLS_GOTDESC) && (tls_type & GOT_TLS_GDESC)) |
11510 | { | |
11511 | unsigned long data, insn; | |
11512 | unsigned thumb; | |
b38cadfb | 11513 | |
0855e32b NS |
11514 | data = bfd_get_32 (input_bfd, hit_data); |
11515 | thumb = data & 1; | |
11516 | data &= ~1u; | |
b38cadfb | 11517 | |
0855e32b NS |
11518 | if (thumb) |
11519 | { | |
11520 | insn = bfd_get_16 (input_bfd, contents + rel->r_offset - data); | |
11521 | if ((insn & 0xf000) == 0xf000 || (insn & 0xf800) == 0xe800) | |
11522 | insn = (insn << 16) | |
11523 | | bfd_get_16 (input_bfd, | |
11524 | contents + rel->r_offset - data + 2); | |
11525 | if ((insn & 0xf800c000) == 0xf000c000) | |
11526 | /* bl/blx */ | |
11527 | value = -6; | |
11528 | else if ((insn & 0xffffff00) == 0x4400) | |
11529 | /* add */ | |
11530 | value = -5; | |
11531 | else | |
11532 | { | |
11533 | (*_bfd_error_handler) | |
11534 | (_("%B(%A+0x%lx):unexpected Thumb instruction '0x%x' referenced by TLS_GOTDESC"), | |
11535 | input_bfd, input_section, | |
11536 | (unsigned long)rel->r_offset, insn); | |
11537 | return bfd_reloc_notsupported; | |
11538 | } | |
11539 | } | |
11540 | else | |
11541 | { | |
11542 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset - data); | |
11543 | ||
11544 | switch (insn >> 24) | |
11545 | { | |
11546 | case 0xeb: /* bl */ | |
11547 | case 0xfa: /* blx */ | |
11548 | value = -4; | |
11549 | break; | |
11550 | ||
11551 | case 0xe0: /* add */ | |
11552 | value = -8; | |
11553 | break; | |
b38cadfb | 11554 | |
0855e32b NS |
11555 | default: |
11556 | (*_bfd_error_handler) | |
11557 | (_("%B(%A+0x%lx):unexpected ARM instruction '0x%x' referenced by TLS_GOTDESC"), | |
11558 | input_bfd, input_section, | |
11559 | (unsigned long)rel->r_offset, insn); | |
11560 | return bfd_reloc_notsupported; | |
11561 | } | |
11562 | } | |
b38cadfb | 11563 | |
0855e32b NS |
11564 | value += ((globals->root.sgotplt->output_section->vma |
11565 | + globals->root.sgotplt->output_offset + off) | |
11566 | - (input_section->output_section->vma | |
11567 | + input_section->output_offset | |
11568 | + rel->r_offset) | |
11569 | + globals->sgotplt_jump_table_size); | |
11570 | } | |
11571 | else | |
11572 | value = ((globals->root.sgot->output_section->vma | |
11573 | + globals->root.sgot->output_offset + off) | |
11574 | - (input_section->output_section->vma | |
11575 | + input_section->output_offset + rel->r_offset)); | |
ba93b8ac DJ |
11576 | |
11577 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
11578 | contents, rel->r_offset, value, | |
00a97672 | 11579 | rel->r_addend); |
ba93b8ac DJ |
11580 | } |
11581 | ||
11582 | case R_ARM_TLS_LE32: | |
3cbc1e5e | 11583 | if (bfd_link_dll (info)) |
ba93b8ac DJ |
11584 | { |
11585 | (*_bfd_error_handler) | |
11586 | (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"), | |
11587 | input_bfd, input_section, | |
11588 | (long) rel->r_offset, howto->name); | |
46691134 | 11589 | return bfd_reloc_notsupported; |
ba93b8ac DJ |
11590 | } |
11591 | else | |
11592 | value = tpoff (info, value); | |
906e58ca | 11593 | |
ba93b8ac | 11594 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
00a97672 RS |
11595 | contents, rel->r_offset, value, |
11596 | rel->r_addend); | |
ba93b8ac | 11597 | |
319850b4 JB |
11598 | case R_ARM_V4BX: |
11599 | if (globals->fix_v4bx) | |
845b51d6 PB |
11600 | { |
11601 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
319850b4 | 11602 | |
845b51d6 PB |
11603 | /* Ensure that we have a BX instruction. */ |
11604 | BFD_ASSERT ((insn & 0x0ffffff0) == 0x012fff10); | |
319850b4 | 11605 | |
845b51d6 PB |
11606 | if (globals->fix_v4bx == 2 && (insn & 0xf) != 0xf) |
11607 | { | |
11608 | /* Branch to veneer. */ | |
11609 | bfd_vma glue_addr; | |
11610 | glue_addr = elf32_arm_bx_glue (info, insn & 0xf); | |
11611 | glue_addr -= input_section->output_section->vma | |
11612 | + input_section->output_offset | |
11613 | + rel->r_offset + 8; | |
11614 | insn = (insn & 0xf0000000) | 0x0a000000 | |
11615 | | ((glue_addr >> 2) & 0x00ffffff); | |
11616 | } | |
11617 | else | |
11618 | { | |
11619 | /* Preserve Rm (lowest four bits) and the condition code | |
11620 | (highest four bits). Other bits encode MOV PC,Rm. */ | |
11621 | insn = (insn & 0xf000000f) | 0x01a0f000; | |
11622 | } | |
319850b4 | 11623 | |
845b51d6 PB |
11624 | bfd_put_32 (input_bfd, insn, hit_data); |
11625 | } | |
319850b4 JB |
11626 | return bfd_reloc_ok; |
11627 | ||
b6895b4f PB |
11628 | case R_ARM_MOVW_ABS_NC: |
11629 | case R_ARM_MOVT_ABS: | |
11630 | case R_ARM_MOVW_PREL_NC: | |
11631 | case R_ARM_MOVT_PREL: | |
92f5d02b MS |
11632 | /* Until we properly support segment-base-relative addressing then |
11633 | we assume the segment base to be zero, as for the group relocations. | |
11634 | Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC | |
11635 | and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS. */ | |
11636 | case R_ARM_MOVW_BREL_NC: | |
11637 | case R_ARM_MOVW_BREL: | |
11638 | case R_ARM_MOVT_BREL: | |
b6895b4f PB |
11639 | { |
11640 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
11641 | ||
11642 | if (globals->use_rel) | |
11643 | { | |
11644 | addend = ((insn >> 4) & 0xf000) | (insn & 0xfff); | |
39623e12 | 11645 | signed_addend = (addend ^ 0x8000) - 0x8000; |
b6895b4f | 11646 | } |
92f5d02b | 11647 | |
b6895b4f | 11648 | value += signed_addend; |
b6895b4f PB |
11649 | |
11650 | if (r_type == R_ARM_MOVW_PREL_NC || r_type == R_ARM_MOVT_PREL) | |
11651 | value -= (input_section->output_section->vma | |
11652 | + input_section->output_offset + rel->r_offset); | |
11653 | ||
92f5d02b | 11654 | if (r_type == R_ARM_MOVW_BREL && value >= 0x10000) |
99059e56 | 11655 | return bfd_reloc_overflow; |
92f5d02b | 11656 | |
35fc36a8 | 11657 | if (branch_type == ST_BRANCH_TO_THUMB) |
92f5d02b MS |
11658 | value |= 1; |
11659 | ||
11660 | if (r_type == R_ARM_MOVT_ABS || r_type == R_ARM_MOVT_PREL | |
99059e56 | 11661 | || r_type == R_ARM_MOVT_BREL) |
b6895b4f PB |
11662 | value >>= 16; |
11663 | ||
11664 | insn &= 0xfff0f000; | |
11665 | insn |= value & 0xfff; | |
11666 | insn |= (value & 0xf000) << 4; | |
11667 | bfd_put_32 (input_bfd, insn, hit_data); | |
11668 | } | |
11669 | return bfd_reloc_ok; | |
11670 | ||
11671 | case R_ARM_THM_MOVW_ABS_NC: | |
11672 | case R_ARM_THM_MOVT_ABS: | |
11673 | case R_ARM_THM_MOVW_PREL_NC: | |
11674 | case R_ARM_THM_MOVT_PREL: | |
92f5d02b MS |
11675 | /* Until we properly support segment-base-relative addressing then |
11676 | we assume the segment base to be zero, as for the above relocations. | |
11677 | Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as | |
11678 | R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics | |
11679 | as R_ARM_THM_MOVT_ABS. */ | |
11680 | case R_ARM_THM_MOVW_BREL_NC: | |
11681 | case R_ARM_THM_MOVW_BREL: | |
11682 | case R_ARM_THM_MOVT_BREL: | |
b6895b4f PB |
11683 | { |
11684 | bfd_vma insn; | |
906e58ca | 11685 | |
b6895b4f PB |
11686 | insn = bfd_get_16 (input_bfd, hit_data) << 16; |
11687 | insn |= bfd_get_16 (input_bfd, hit_data + 2); | |
11688 | ||
11689 | if (globals->use_rel) | |
11690 | { | |
11691 | addend = ((insn >> 4) & 0xf000) | |
11692 | | ((insn >> 15) & 0x0800) | |
11693 | | ((insn >> 4) & 0x0700) | |
11694 | | (insn & 0x00ff); | |
39623e12 | 11695 | signed_addend = (addend ^ 0x8000) - 0x8000; |
b6895b4f | 11696 | } |
92f5d02b | 11697 | |
b6895b4f | 11698 | value += signed_addend; |
b6895b4f PB |
11699 | |
11700 | if (r_type == R_ARM_THM_MOVW_PREL_NC || r_type == R_ARM_THM_MOVT_PREL) | |
11701 | value -= (input_section->output_section->vma | |
11702 | + input_section->output_offset + rel->r_offset); | |
11703 | ||
92f5d02b | 11704 | if (r_type == R_ARM_THM_MOVW_BREL && value >= 0x10000) |
99059e56 | 11705 | return bfd_reloc_overflow; |
92f5d02b | 11706 | |
35fc36a8 | 11707 | if (branch_type == ST_BRANCH_TO_THUMB) |
92f5d02b MS |
11708 | value |= 1; |
11709 | ||
11710 | if (r_type == R_ARM_THM_MOVT_ABS || r_type == R_ARM_THM_MOVT_PREL | |
99059e56 | 11711 | || r_type == R_ARM_THM_MOVT_BREL) |
b6895b4f PB |
11712 | value >>= 16; |
11713 | ||
11714 | insn &= 0xfbf08f00; | |
11715 | insn |= (value & 0xf000) << 4; | |
11716 | insn |= (value & 0x0800) << 15; | |
11717 | insn |= (value & 0x0700) << 4; | |
11718 | insn |= (value & 0x00ff); | |
11719 | ||
11720 | bfd_put_16 (input_bfd, insn >> 16, hit_data); | |
11721 | bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2); | |
11722 | } | |
11723 | return bfd_reloc_ok; | |
11724 | ||
4962c51a MS |
11725 | case R_ARM_ALU_PC_G0_NC: |
11726 | case R_ARM_ALU_PC_G1_NC: | |
11727 | case R_ARM_ALU_PC_G0: | |
11728 | case R_ARM_ALU_PC_G1: | |
11729 | case R_ARM_ALU_PC_G2: | |
11730 | case R_ARM_ALU_SB_G0_NC: | |
11731 | case R_ARM_ALU_SB_G1_NC: | |
11732 | case R_ARM_ALU_SB_G0: | |
11733 | case R_ARM_ALU_SB_G1: | |
11734 | case R_ARM_ALU_SB_G2: | |
11735 | { | |
11736 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
99059e56 | 11737 | bfd_vma pc = input_section->output_section->vma |
4962c51a | 11738 | + input_section->output_offset + rel->r_offset; |
31a91d61 | 11739 | /* sb is the origin of the *segment* containing the symbol. */ |
62c34db3 | 11740 | bfd_vma sb = sym_sec ? sym_sec->output_section->vma : 0; |
99059e56 RM |
11741 | bfd_vma residual; |
11742 | bfd_vma g_n; | |
4962c51a | 11743 | bfd_signed_vma signed_value; |
99059e56 RM |
11744 | int group = 0; |
11745 | ||
11746 | /* Determine which group of bits to select. */ | |
11747 | switch (r_type) | |
11748 | { | |
11749 | case R_ARM_ALU_PC_G0_NC: | |
11750 | case R_ARM_ALU_PC_G0: | |
11751 | case R_ARM_ALU_SB_G0_NC: | |
11752 | case R_ARM_ALU_SB_G0: | |
11753 | group = 0; | |
11754 | break; | |
11755 | ||
11756 | case R_ARM_ALU_PC_G1_NC: | |
11757 | case R_ARM_ALU_PC_G1: | |
11758 | case R_ARM_ALU_SB_G1_NC: | |
11759 | case R_ARM_ALU_SB_G1: | |
11760 | group = 1; | |
11761 | break; | |
11762 | ||
11763 | case R_ARM_ALU_PC_G2: | |
11764 | case R_ARM_ALU_SB_G2: | |
11765 | group = 2; | |
11766 | break; | |
11767 | ||
11768 | default: | |
11769 | abort (); | |
11770 | } | |
11771 | ||
11772 | /* If REL, extract the addend from the insn. If RELA, it will | |
11773 | have already been fetched for us. */ | |
4962c51a | 11774 | if (globals->use_rel) |
99059e56 RM |
11775 | { |
11776 | int negative; | |
11777 | bfd_vma constant = insn & 0xff; | |
11778 | bfd_vma rotation = (insn & 0xf00) >> 8; | |
11779 | ||
11780 | if (rotation == 0) | |
11781 | signed_addend = constant; | |
11782 | else | |
11783 | { | |
11784 | /* Compensate for the fact that in the instruction, the | |
11785 | rotation is stored in multiples of 2 bits. */ | |
11786 | rotation *= 2; | |
11787 | ||
11788 | /* Rotate "constant" right by "rotation" bits. */ | |
11789 | signed_addend = (constant >> rotation) | | |
11790 | (constant << (8 * sizeof (bfd_vma) - rotation)); | |
11791 | } | |
11792 | ||
11793 | /* Determine if the instruction is an ADD or a SUB. | |
11794 | (For REL, this determines the sign of the addend.) */ | |
11795 | negative = identify_add_or_sub (insn); | |
11796 | if (negative == 0) | |
11797 | { | |
11798 | (*_bfd_error_handler) | |
11799 | (_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"), | |
11800 | input_bfd, input_section, | |
11801 | (long) rel->r_offset, howto->name); | |
11802 | return bfd_reloc_overflow; | |
11803 | } | |
11804 | ||
11805 | signed_addend *= negative; | |
11806 | } | |
4962c51a MS |
11807 | |
11808 | /* Compute the value (X) to go in the place. */ | |
99059e56 RM |
11809 | if (r_type == R_ARM_ALU_PC_G0_NC |
11810 | || r_type == R_ARM_ALU_PC_G1_NC | |
11811 | || r_type == R_ARM_ALU_PC_G0 | |
11812 | || r_type == R_ARM_ALU_PC_G1 | |
11813 | || r_type == R_ARM_ALU_PC_G2) | |
11814 | /* PC relative. */ | |
11815 | signed_value = value - pc + signed_addend; | |
11816 | else | |
11817 | /* Section base relative. */ | |
11818 | signed_value = value - sb + signed_addend; | |
11819 | ||
11820 | /* If the target symbol is a Thumb function, then set the | |
11821 | Thumb bit in the address. */ | |
35fc36a8 | 11822 | if (branch_type == ST_BRANCH_TO_THUMB) |
4962c51a MS |
11823 | signed_value |= 1; |
11824 | ||
99059e56 RM |
11825 | /* Calculate the value of the relevant G_n, in encoded |
11826 | constant-with-rotation format. */ | |
b6518b38 NC |
11827 | g_n = calculate_group_reloc_mask (signed_value < 0 ? - signed_value : signed_value, |
11828 | group, &residual); | |
99059e56 RM |
11829 | |
11830 | /* Check for overflow if required. */ | |
11831 | if ((r_type == R_ARM_ALU_PC_G0 | |
11832 | || r_type == R_ARM_ALU_PC_G1 | |
11833 | || r_type == R_ARM_ALU_PC_G2 | |
11834 | || r_type == R_ARM_ALU_SB_G0 | |
11835 | || r_type == R_ARM_ALU_SB_G1 | |
11836 | || r_type == R_ARM_ALU_SB_G2) && residual != 0) | |
11837 | { | |
11838 | (*_bfd_error_handler) | |
11839 | (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"), | |
11840 | input_bfd, input_section, | |
b6518b38 NC |
11841 | (long) rel->r_offset, signed_value < 0 ? - signed_value : signed_value, |
11842 | howto->name); | |
99059e56 RM |
11843 | return bfd_reloc_overflow; |
11844 | } | |
11845 | ||
11846 | /* Mask out the value and the ADD/SUB part of the opcode; take care | |
11847 | not to destroy the S bit. */ | |
11848 | insn &= 0xff1ff000; | |
11849 | ||
11850 | /* Set the opcode according to whether the value to go in the | |
11851 | place is negative. */ | |
11852 | if (signed_value < 0) | |
11853 | insn |= 1 << 22; | |
11854 | else | |
11855 | insn |= 1 << 23; | |
11856 | ||
11857 | /* Encode the offset. */ | |
11858 | insn |= g_n; | |
4962c51a MS |
11859 | |
11860 | bfd_put_32 (input_bfd, insn, hit_data); | |
11861 | } | |
11862 | return bfd_reloc_ok; | |
11863 | ||
11864 | case R_ARM_LDR_PC_G0: | |
11865 | case R_ARM_LDR_PC_G1: | |
11866 | case R_ARM_LDR_PC_G2: | |
11867 | case R_ARM_LDR_SB_G0: | |
11868 | case R_ARM_LDR_SB_G1: | |
11869 | case R_ARM_LDR_SB_G2: | |
11870 | { | |
11871 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
99059e56 | 11872 | bfd_vma pc = input_section->output_section->vma |
4962c51a | 11873 | + input_section->output_offset + rel->r_offset; |
31a91d61 | 11874 | /* sb is the origin of the *segment* containing the symbol. */ |
62c34db3 | 11875 | bfd_vma sb = sym_sec ? sym_sec->output_section->vma : 0; |
99059e56 | 11876 | bfd_vma residual; |
4962c51a | 11877 | bfd_signed_vma signed_value; |
99059e56 RM |
11878 | int group = 0; |
11879 | ||
11880 | /* Determine which groups of bits to calculate. */ | |
11881 | switch (r_type) | |
11882 | { | |
11883 | case R_ARM_LDR_PC_G0: | |
11884 | case R_ARM_LDR_SB_G0: | |
11885 | group = 0; | |
11886 | break; | |
11887 | ||
11888 | case R_ARM_LDR_PC_G1: | |
11889 | case R_ARM_LDR_SB_G1: | |
11890 | group = 1; | |
11891 | break; | |
11892 | ||
11893 | case R_ARM_LDR_PC_G2: | |
11894 | case R_ARM_LDR_SB_G2: | |
11895 | group = 2; | |
11896 | break; | |
11897 | ||
11898 | default: | |
11899 | abort (); | |
11900 | } | |
11901 | ||
11902 | /* If REL, extract the addend from the insn. If RELA, it will | |
11903 | have already been fetched for us. */ | |
4962c51a | 11904 | if (globals->use_rel) |
99059e56 RM |
11905 | { |
11906 | int negative = (insn & (1 << 23)) ? 1 : -1; | |
11907 | signed_addend = negative * (insn & 0xfff); | |
11908 | } | |
4962c51a MS |
11909 | |
11910 | /* Compute the value (X) to go in the place. */ | |
99059e56 RM |
11911 | if (r_type == R_ARM_LDR_PC_G0 |
11912 | || r_type == R_ARM_LDR_PC_G1 | |
11913 | || r_type == R_ARM_LDR_PC_G2) | |
11914 | /* PC relative. */ | |
11915 | signed_value = value - pc + signed_addend; | |
11916 | else | |
11917 | /* Section base relative. */ | |
11918 | signed_value = value - sb + signed_addend; | |
11919 | ||
11920 | /* Calculate the value of the relevant G_{n-1} to obtain | |
11921 | the residual at that stage. */ | |
b6518b38 NC |
11922 | calculate_group_reloc_mask (signed_value < 0 ? - signed_value : signed_value, |
11923 | group - 1, &residual); | |
99059e56 RM |
11924 | |
11925 | /* Check for overflow. */ | |
11926 | if (residual >= 0x1000) | |
11927 | { | |
11928 | (*_bfd_error_handler) | |
11929 | (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"), | |
b6518b38 NC |
11930 | input_bfd, input_section, |
11931 | (long) rel->r_offset, labs (signed_value), howto->name); | |
99059e56 RM |
11932 | return bfd_reloc_overflow; |
11933 | } | |
11934 | ||
11935 | /* Mask out the value and U bit. */ | |
11936 | insn &= 0xff7ff000; | |
11937 | ||
11938 | /* Set the U bit if the value to go in the place is non-negative. */ | |
11939 | if (signed_value >= 0) | |
11940 | insn |= 1 << 23; | |
11941 | ||
11942 | /* Encode the offset. */ | |
11943 | insn |= residual; | |
4962c51a MS |
11944 | |
11945 | bfd_put_32 (input_bfd, insn, hit_data); | |
11946 | } | |
11947 | return bfd_reloc_ok; | |
11948 | ||
11949 | case R_ARM_LDRS_PC_G0: | |
11950 | case R_ARM_LDRS_PC_G1: | |
11951 | case R_ARM_LDRS_PC_G2: | |
11952 | case R_ARM_LDRS_SB_G0: | |
11953 | case R_ARM_LDRS_SB_G1: | |
11954 | case R_ARM_LDRS_SB_G2: | |
11955 | { | |
11956 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
99059e56 | 11957 | bfd_vma pc = input_section->output_section->vma |
4962c51a | 11958 | + input_section->output_offset + rel->r_offset; |
31a91d61 | 11959 | /* sb is the origin of the *segment* containing the symbol. */ |
62c34db3 | 11960 | bfd_vma sb = sym_sec ? sym_sec->output_section->vma : 0; |
99059e56 | 11961 | bfd_vma residual; |
4962c51a | 11962 | bfd_signed_vma signed_value; |
99059e56 RM |
11963 | int group = 0; |
11964 | ||
11965 | /* Determine which groups of bits to calculate. */ | |
11966 | switch (r_type) | |
11967 | { | |
11968 | case R_ARM_LDRS_PC_G0: | |
11969 | case R_ARM_LDRS_SB_G0: | |
11970 | group = 0; | |
11971 | break; | |
11972 | ||
11973 | case R_ARM_LDRS_PC_G1: | |
11974 | case R_ARM_LDRS_SB_G1: | |
11975 | group = 1; | |
11976 | break; | |
11977 | ||
11978 | case R_ARM_LDRS_PC_G2: | |
11979 | case R_ARM_LDRS_SB_G2: | |
11980 | group = 2; | |
11981 | break; | |
11982 | ||
11983 | default: | |
11984 | abort (); | |
11985 | } | |
11986 | ||
11987 | /* If REL, extract the addend from the insn. If RELA, it will | |
11988 | have already been fetched for us. */ | |
4962c51a | 11989 | if (globals->use_rel) |
99059e56 RM |
11990 | { |
11991 | int negative = (insn & (1 << 23)) ? 1 : -1; | |
11992 | signed_addend = negative * (((insn & 0xf00) >> 4) + (insn & 0xf)); | |
11993 | } | |
4962c51a MS |
11994 | |
11995 | /* Compute the value (X) to go in the place. */ | |
99059e56 RM |
11996 | if (r_type == R_ARM_LDRS_PC_G0 |
11997 | || r_type == R_ARM_LDRS_PC_G1 | |
11998 | || r_type == R_ARM_LDRS_PC_G2) | |
11999 | /* PC relative. */ | |
12000 | signed_value = value - pc + signed_addend; | |
12001 | else | |
12002 | /* Section base relative. */ | |
12003 | signed_value = value - sb + signed_addend; | |
12004 | ||
12005 | /* Calculate the value of the relevant G_{n-1} to obtain | |
12006 | the residual at that stage. */ | |
b6518b38 NC |
12007 | calculate_group_reloc_mask (signed_value < 0 ? - signed_value : signed_value, |
12008 | group - 1, &residual); | |
99059e56 RM |
12009 | |
12010 | /* Check for overflow. */ | |
12011 | if (residual >= 0x100) | |
12012 | { | |
12013 | (*_bfd_error_handler) | |
12014 | (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"), | |
b6518b38 NC |
12015 | input_bfd, input_section, |
12016 | (long) rel->r_offset, labs (signed_value), howto->name); | |
99059e56 RM |
12017 | return bfd_reloc_overflow; |
12018 | } | |
12019 | ||
12020 | /* Mask out the value and U bit. */ | |
12021 | insn &= 0xff7ff0f0; | |
12022 | ||
12023 | /* Set the U bit if the value to go in the place is non-negative. */ | |
12024 | if (signed_value >= 0) | |
12025 | insn |= 1 << 23; | |
12026 | ||
12027 | /* Encode the offset. */ | |
12028 | insn |= ((residual & 0xf0) << 4) | (residual & 0xf); | |
4962c51a MS |
12029 | |
12030 | bfd_put_32 (input_bfd, insn, hit_data); | |
12031 | } | |
12032 | return bfd_reloc_ok; | |
12033 | ||
12034 | case R_ARM_LDC_PC_G0: | |
12035 | case R_ARM_LDC_PC_G1: | |
12036 | case R_ARM_LDC_PC_G2: | |
12037 | case R_ARM_LDC_SB_G0: | |
12038 | case R_ARM_LDC_SB_G1: | |
12039 | case R_ARM_LDC_SB_G2: | |
12040 | { | |
12041 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
99059e56 | 12042 | bfd_vma pc = input_section->output_section->vma |
4962c51a | 12043 | + input_section->output_offset + rel->r_offset; |
31a91d61 | 12044 | /* sb is the origin of the *segment* containing the symbol. */ |
62c34db3 | 12045 | bfd_vma sb = sym_sec ? sym_sec->output_section->vma : 0; |
99059e56 | 12046 | bfd_vma residual; |
4962c51a | 12047 | bfd_signed_vma signed_value; |
99059e56 RM |
12048 | int group = 0; |
12049 | ||
12050 | /* Determine which groups of bits to calculate. */ | |
12051 | switch (r_type) | |
12052 | { | |
12053 | case R_ARM_LDC_PC_G0: | |
12054 | case R_ARM_LDC_SB_G0: | |
12055 | group = 0; | |
12056 | break; | |
12057 | ||
12058 | case R_ARM_LDC_PC_G1: | |
12059 | case R_ARM_LDC_SB_G1: | |
12060 | group = 1; | |
12061 | break; | |
12062 | ||
12063 | case R_ARM_LDC_PC_G2: | |
12064 | case R_ARM_LDC_SB_G2: | |
12065 | group = 2; | |
12066 | break; | |
12067 | ||
12068 | default: | |
12069 | abort (); | |
12070 | } | |
12071 | ||
12072 | /* If REL, extract the addend from the insn. If RELA, it will | |
12073 | have already been fetched for us. */ | |
4962c51a | 12074 | if (globals->use_rel) |
99059e56 RM |
12075 | { |
12076 | int negative = (insn & (1 << 23)) ? 1 : -1; | |
12077 | signed_addend = negative * ((insn & 0xff) << 2); | |
12078 | } | |
4962c51a MS |
12079 | |
12080 | /* Compute the value (X) to go in the place. */ | |
99059e56 RM |
12081 | if (r_type == R_ARM_LDC_PC_G0 |
12082 | || r_type == R_ARM_LDC_PC_G1 | |
12083 | || r_type == R_ARM_LDC_PC_G2) | |
12084 | /* PC relative. */ | |
12085 | signed_value = value - pc + signed_addend; | |
12086 | else | |
12087 | /* Section base relative. */ | |
12088 | signed_value = value - sb + signed_addend; | |
12089 | ||
12090 | /* Calculate the value of the relevant G_{n-1} to obtain | |
12091 | the residual at that stage. */ | |
b6518b38 NC |
12092 | calculate_group_reloc_mask (signed_value < 0 ? - signed_value : signed_value, |
12093 | group - 1, &residual); | |
99059e56 RM |
12094 | |
12095 | /* Check for overflow. (The absolute value to go in the place must be | |
12096 | divisible by four and, after having been divided by four, must | |
12097 | fit in eight bits.) */ | |
12098 | if ((residual & 0x3) != 0 || residual >= 0x400) | |
12099 | { | |
12100 | (*_bfd_error_handler) | |
12101 | (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"), | |
12102 | input_bfd, input_section, | |
b6518b38 | 12103 | (long) rel->r_offset, labs (signed_value), howto->name); |
99059e56 RM |
12104 | return bfd_reloc_overflow; |
12105 | } | |
12106 | ||
12107 | /* Mask out the value and U bit. */ | |
12108 | insn &= 0xff7fff00; | |
12109 | ||
12110 | /* Set the U bit if the value to go in the place is non-negative. */ | |
12111 | if (signed_value >= 0) | |
12112 | insn |= 1 << 23; | |
12113 | ||
12114 | /* Encode the offset. */ | |
12115 | insn |= residual >> 2; | |
4962c51a MS |
12116 | |
12117 | bfd_put_32 (input_bfd, insn, hit_data); | |
12118 | } | |
12119 | return bfd_reloc_ok; | |
12120 | ||
72d98d16 MG |
12121 | case R_ARM_THM_ALU_ABS_G0_NC: |
12122 | case R_ARM_THM_ALU_ABS_G1_NC: | |
12123 | case R_ARM_THM_ALU_ABS_G2_NC: | |
12124 | case R_ARM_THM_ALU_ABS_G3_NC: | |
12125 | { | |
12126 | const int shift_array[4] = {0, 8, 16, 24}; | |
12127 | bfd_vma insn = bfd_get_16 (input_bfd, hit_data); | |
12128 | bfd_vma addr = value; | |
12129 | int shift = shift_array[r_type - R_ARM_THM_ALU_ABS_G0_NC]; | |
12130 | ||
12131 | /* Compute address. */ | |
12132 | if (globals->use_rel) | |
12133 | signed_addend = insn & 0xff; | |
12134 | addr += signed_addend; | |
12135 | if (branch_type == ST_BRANCH_TO_THUMB) | |
12136 | addr |= 1; | |
12137 | /* Clean imm8 insn. */ | |
12138 | insn &= 0xff00; | |
12139 | /* And update with correct part of address. */ | |
12140 | insn |= (addr >> shift) & 0xff; | |
12141 | /* Update insn. */ | |
12142 | bfd_put_16 (input_bfd, insn, hit_data); | |
12143 | } | |
12144 | ||
12145 | *unresolved_reloc_p = FALSE; | |
12146 | return bfd_reloc_ok; | |
12147 | ||
252b5132 RH |
12148 | default: |
12149 | return bfd_reloc_notsupported; | |
12150 | } | |
12151 | } | |
12152 | ||
98c1d4aa NC |
12153 | /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */ |
12154 | static void | |
57e8b36a NC |
12155 | arm_add_to_rel (bfd * abfd, |
12156 | bfd_byte * address, | |
12157 | reloc_howto_type * howto, | |
12158 | bfd_signed_vma increment) | |
98c1d4aa | 12159 | { |
98c1d4aa NC |
12160 | bfd_signed_vma addend; |
12161 | ||
bd97cb95 DJ |
12162 | if (howto->type == R_ARM_THM_CALL |
12163 | || howto->type == R_ARM_THM_JUMP24) | |
98c1d4aa | 12164 | { |
9a5aca8c AM |
12165 | int upper_insn, lower_insn; |
12166 | int upper, lower; | |
98c1d4aa | 12167 | |
9a5aca8c AM |
12168 | upper_insn = bfd_get_16 (abfd, address); |
12169 | lower_insn = bfd_get_16 (abfd, address + 2); | |
12170 | upper = upper_insn & 0x7ff; | |
12171 | lower = lower_insn & 0x7ff; | |
12172 | ||
12173 | addend = (upper << 12) | (lower << 1); | |
ddda4409 | 12174 | addend += increment; |
9a5aca8c | 12175 | addend >>= 1; |
98c1d4aa | 12176 | |
9a5aca8c AM |
12177 | upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff); |
12178 | lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff); | |
12179 | ||
dc810e39 AM |
12180 | bfd_put_16 (abfd, (bfd_vma) upper_insn, address); |
12181 | bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2); | |
9a5aca8c AM |
12182 | } |
12183 | else | |
12184 | { | |
12185 | bfd_vma contents; | |
12186 | ||
12187 | contents = bfd_get_32 (abfd, address); | |
12188 | ||
12189 | /* Get the (signed) value from the instruction. */ | |
12190 | addend = contents & howto->src_mask; | |
12191 | if (addend & ((howto->src_mask + 1) >> 1)) | |
12192 | { | |
12193 | bfd_signed_vma mask; | |
12194 | ||
12195 | mask = -1; | |
12196 | mask &= ~ howto->src_mask; | |
12197 | addend |= mask; | |
12198 | } | |
12199 | ||
12200 | /* Add in the increment, (which is a byte value). */ | |
12201 | switch (howto->type) | |
12202 | { | |
12203 | default: | |
12204 | addend += increment; | |
12205 | break; | |
12206 | ||
12207 | case R_ARM_PC24: | |
c6596c5e | 12208 | case R_ARM_PLT32: |
5b5bb741 PB |
12209 | case R_ARM_CALL: |
12210 | case R_ARM_JUMP24: | |
9a5aca8c | 12211 | addend <<= howto->size; |
dc810e39 | 12212 | addend += increment; |
9a5aca8c AM |
12213 | |
12214 | /* Should we check for overflow here ? */ | |
12215 | ||
12216 | /* Drop any undesired bits. */ | |
12217 | addend >>= howto->rightshift; | |
12218 | break; | |
12219 | } | |
12220 | ||
12221 | contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask); | |
12222 | ||
12223 | bfd_put_32 (abfd, contents, address); | |
ddda4409 | 12224 | } |
98c1d4aa | 12225 | } |
252b5132 | 12226 | |
ba93b8ac DJ |
12227 | #define IS_ARM_TLS_RELOC(R_TYPE) \ |
12228 | ((R_TYPE) == R_ARM_TLS_GD32 \ | |
12229 | || (R_TYPE) == R_ARM_TLS_LDO32 \ | |
12230 | || (R_TYPE) == R_ARM_TLS_LDM32 \ | |
12231 | || (R_TYPE) == R_ARM_TLS_DTPOFF32 \ | |
12232 | || (R_TYPE) == R_ARM_TLS_DTPMOD32 \ | |
12233 | || (R_TYPE) == R_ARM_TLS_TPOFF32 \ | |
12234 | || (R_TYPE) == R_ARM_TLS_LE32 \ | |
0855e32b NS |
12235 | || (R_TYPE) == R_ARM_TLS_IE32 \ |
12236 | || IS_ARM_TLS_GNU_RELOC (R_TYPE)) | |
12237 | ||
12238 | /* Specific set of relocations for the gnu tls dialect. */ | |
12239 | #define IS_ARM_TLS_GNU_RELOC(R_TYPE) \ | |
12240 | ((R_TYPE) == R_ARM_TLS_GOTDESC \ | |
12241 | || (R_TYPE) == R_ARM_TLS_CALL \ | |
12242 | || (R_TYPE) == R_ARM_THM_TLS_CALL \ | |
12243 | || (R_TYPE) == R_ARM_TLS_DESCSEQ \ | |
12244 | || (R_TYPE) == R_ARM_THM_TLS_DESCSEQ) | |
ba93b8ac | 12245 | |
252b5132 | 12246 | /* Relocate an ARM ELF section. */ |
906e58ca | 12247 | |
b34976b6 | 12248 | static bfd_boolean |
57e8b36a NC |
12249 | elf32_arm_relocate_section (bfd * output_bfd, |
12250 | struct bfd_link_info * info, | |
12251 | bfd * input_bfd, | |
12252 | asection * input_section, | |
12253 | bfd_byte * contents, | |
12254 | Elf_Internal_Rela * relocs, | |
12255 | Elf_Internal_Sym * local_syms, | |
12256 | asection ** local_sections) | |
252b5132 | 12257 | { |
b34976b6 AM |
12258 | Elf_Internal_Shdr *symtab_hdr; |
12259 | struct elf_link_hash_entry **sym_hashes; | |
12260 | Elf_Internal_Rela *rel; | |
12261 | Elf_Internal_Rela *relend; | |
12262 | const char *name; | |
b32d3aa2 | 12263 | struct elf32_arm_link_hash_table * globals; |
252b5132 | 12264 | |
4e7fd91e | 12265 | globals = elf32_arm_hash_table (info); |
4dfe6ac6 NC |
12266 | if (globals == NULL) |
12267 | return FALSE; | |
b491616a | 12268 | |
0ffa91dd | 12269 | symtab_hdr = & elf_symtab_hdr (input_bfd); |
252b5132 RH |
12270 | sym_hashes = elf_sym_hashes (input_bfd); |
12271 | ||
12272 | rel = relocs; | |
12273 | relend = relocs + input_section->reloc_count; | |
12274 | for (; rel < relend; rel++) | |
12275 | { | |
ba96a88f NC |
12276 | int r_type; |
12277 | reloc_howto_type * howto; | |
12278 | unsigned long r_symndx; | |
12279 | Elf_Internal_Sym * sym; | |
12280 | asection * sec; | |
252b5132 | 12281 | struct elf_link_hash_entry * h; |
ba96a88f NC |
12282 | bfd_vma relocation; |
12283 | bfd_reloc_status_type r; | |
12284 | arelent bfd_reloc; | |
ba93b8ac | 12285 | char sym_type; |
0945cdfd | 12286 | bfd_boolean unresolved_reloc = FALSE; |
f2a9dd69 | 12287 | char *error_message = NULL; |
f21f3fe0 | 12288 | |
252b5132 | 12289 | r_symndx = ELF32_R_SYM (rel->r_info); |
ba96a88f | 12290 | r_type = ELF32_R_TYPE (rel->r_info); |
b32d3aa2 | 12291 | r_type = arm_real_reloc_type (globals, r_type); |
252b5132 | 12292 | |
ba96a88f | 12293 | if ( r_type == R_ARM_GNU_VTENTRY |
99059e56 RM |
12294 | || r_type == R_ARM_GNU_VTINHERIT) |
12295 | continue; | |
252b5132 | 12296 | |
b32d3aa2 | 12297 | bfd_reloc.howto = elf32_arm_howto_from_type (r_type); |
ba96a88f | 12298 | howto = bfd_reloc.howto; |
252b5132 | 12299 | |
252b5132 RH |
12300 | h = NULL; |
12301 | sym = NULL; | |
12302 | sec = NULL; | |
9b485d32 | 12303 | |
252b5132 RH |
12304 | if (r_symndx < symtab_hdr->sh_info) |
12305 | { | |
12306 | sym = local_syms + r_symndx; | |
ba93b8ac | 12307 | sym_type = ELF32_ST_TYPE (sym->st_info); |
252b5132 | 12308 | sec = local_sections[r_symndx]; |
ffcb4889 NS |
12309 | |
12310 | /* An object file might have a reference to a local | |
12311 | undefined symbol. This is a daft object file, but we | |
12312 | should at least do something about it. V4BX & NONE | |
12313 | relocations do not use the symbol and are explicitly | |
77b4f08f TS |
12314 | allowed to use the undefined symbol, so allow those. |
12315 | Likewise for relocations against STN_UNDEF. */ | |
ffcb4889 NS |
12316 | if (r_type != R_ARM_V4BX |
12317 | && r_type != R_ARM_NONE | |
77b4f08f | 12318 | && r_symndx != STN_UNDEF |
ffcb4889 NS |
12319 | && bfd_is_und_section (sec) |
12320 | && ELF_ST_BIND (sym->st_info) != STB_WEAK) | |
1a72702b AM |
12321 | (*info->callbacks->undefined_symbol) |
12322 | (info, bfd_elf_string_from_elf_section | |
12323 | (input_bfd, symtab_hdr->sh_link, sym->st_name), | |
12324 | input_bfd, input_section, | |
12325 | rel->r_offset, TRUE); | |
b38cadfb | 12326 | |
4e7fd91e | 12327 | if (globals->use_rel) |
f8df10f4 | 12328 | { |
4e7fd91e PB |
12329 | relocation = (sec->output_section->vma |
12330 | + sec->output_offset | |
12331 | + sym->st_value); | |
0e1862bb | 12332 | if (!bfd_link_relocatable (info) |
ab96bf03 AM |
12333 | && (sec->flags & SEC_MERGE) |
12334 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
f8df10f4 | 12335 | { |
4e7fd91e PB |
12336 | asection *msec; |
12337 | bfd_vma addend, value; | |
12338 | ||
39623e12 | 12339 | switch (r_type) |
4e7fd91e | 12340 | { |
39623e12 PB |
12341 | case R_ARM_MOVW_ABS_NC: |
12342 | case R_ARM_MOVT_ABS: | |
12343 | value = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
12344 | addend = ((value & 0xf0000) >> 4) | (value & 0xfff); | |
12345 | addend = (addend ^ 0x8000) - 0x8000; | |
12346 | break; | |
f8df10f4 | 12347 | |
39623e12 PB |
12348 | case R_ARM_THM_MOVW_ABS_NC: |
12349 | case R_ARM_THM_MOVT_ABS: | |
12350 | value = bfd_get_16 (input_bfd, contents + rel->r_offset) | |
12351 | << 16; | |
12352 | value |= bfd_get_16 (input_bfd, | |
12353 | contents + rel->r_offset + 2); | |
12354 | addend = ((value & 0xf7000) >> 4) | (value & 0xff) | |
12355 | | ((value & 0x04000000) >> 15); | |
12356 | addend = (addend ^ 0x8000) - 0x8000; | |
12357 | break; | |
f8df10f4 | 12358 | |
39623e12 PB |
12359 | default: |
12360 | if (howto->rightshift | |
12361 | || (howto->src_mask & (howto->src_mask + 1))) | |
12362 | { | |
12363 | (*_bfd_error_handler) | |
12364 | (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"), | |
12365 | input_bfd, input_section, | |
12366 | (long) rel->r_offset, howto->name); | |
12367 | return FALSE; | |
12368 | } | |
12369 | ||
12370 | value = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
12371 | ||
12372 | /* Get the (signed) value from the instruction. */ | |
12373 | addend = value & howto->src_mask; | |
12374 | if (addend & ((howto->src_mask + 1) >> 1)) | |
12375 | { | |
12376 | bfd_signed_vma mask; | |
12377 | ||
12378 | mask = -1; | |
12379 | mask &= ~ howto->src_mask; | |
12380 | addend |= mask; | |
12381 | } | |
12382 | break; | |
4e7fd91e | 12383 | } |
39623e12 | 12384 | |
4e7fd91e PB |
12385 | msec = sec; |
12386 | addend = | |
12387 | _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend) | |
12388 | - relocation; | |
12389 | addend += msec->output_section->vma + msec->output_offset; | |
39623e12 | 12390 | |
cc643b88 | 12391 | /* Cases here must match those in the preceding |
39623e12 PB |
12392 | switch statement. */ |
12393 | switch (r_type) | |
12394 | { | |
12395 | case R_ARM_MOVW_ABS_NC: | |
12396 | case R_ARM_MOVT_ABS: | |
12397 | value = (value & 0xfff0f000) | ((addend & 0xf000) << 4) | |
12398 | | (addend & 0xfff); | |
12399 | bfd_put_32 (input_bfd, value, contents + rel->r_offset); | |
12400 | break; | |
12401 | ||
12402 | case R_ARM_THM_MOVW_ABS_NC: | |
12403 | case R_ARM_THM_MOVT_ABS: | |
12404 | value = (value & 0xfbf08f00) | ((addend & 0xf700) << 4) | |
12405 | | (addend & 0xff) | ((addend & 0x0800) << 15); | |
12406 | bfd_put_16 (input_bfd, value >> 16, | |
12407 | contents + rel->r_offset); | |
12408 | bfd_put_16 (input_bfd, value, | |
12409 | contents + rel->r_offset + 2); | |
12410 | break; | |
12411 | ||
12412 | default: | |
12413 | value = (value & ~ howto->dst_mask) | |
12414 | | (addend & howto->dst_mask); | |
12415 | bfd_put_32 (input_bfd, value, contents + rel->r_offset); | |
12416 | break; | |
12417 | } | |
f8df10f4 | 12418 | } |
f8df10f4 | 12419 | } |
4e7fd91e PB |
12420 | else |
12421 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
252b5132 RH |
12422 | } |
12423 | else | |
12424 | { | |
62d887d4 | 12425 | bfd_boolean warned, ignored; |
560e09e9 | 12426 | |
b2a8e766 AM |
12427 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
12428 | r_symndx, symtab_hdr, sym_hashes, | |
12429 | h, sec, relocation, | |
62d887d4 | 12430 | unresolved_reloc, warned, ignored); |
ba93b8ac DJ |
12431 | |
12432 | sym_type = h->type; | |
252b5132 RH |
12433 | } |
12434 | ||
dbaa2011 | 12435 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 12436 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 12437 | rel, 1, relend, howto, 0, contents); |
ab96bf03 | 12438 | |
0e1862bb | 12439 | if (bfd_link_relocatable (info)) |
ab96bf03 AM |
12440 | { |
12441 | /* This is a relocatable link. We don't have to change | |
12442 | anything, unless the reloc is against a section symbol, | |
12443 | in which case we have to adjust according to where the | |
12444 | section symbol winds up in the output section. */ | |
12445 | if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
12446 | { | |
12447 | if (globals->use_rel) | |
12448 | arm_add_to_rel (input_bfd, contents + rel->r_offset, | |
12449 | howto, (bfd_signed_vma) sec->output_offset); | |
12450 | else | |
12451 | rel->r_addend += sec->output_offset; | |
12452 | } | |
12453 | continue; | |
12454 | } | |
12455 | ||
252b5132 RH |
12456 | if (h != NULL) |
12457 | name = h->root.root.string; | |
12458 | else | |
12459 | { | |
12460 | name = (bfd_elf_string_from_elf_section | |
12461 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
12462 | if (name == NULL || *name == '\0') | |
12463 | name = bfd_section_name (input_bfd, sec); | |
12464 | } | |
f21f3fe0 | 12465 | |
cf35638d | 12466 | if (r_symndx != STN_UNDEF |
ba93b8ac DJ |
12467 | && r_type != R_ARM_NONE |
12468 | && (h == NULL | |
12469 | || h->root.type == bfd_link_hash_defined | |
12470 | || h->root.type == bfd_link_hash_defweak) | |
12471 | && IS_ARM_TLS_RELOC (r_type) != (sym_type == STT_TLS)) | |
12472 | { | |
12473 | (*_bfd_error_handler) | |
12474 | ((sym_type == STT_TLS | |
12475 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") | |
12476 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")), | |
12477 | input_bfd, | |
12478 | input_section, | |
12479 | (long) rel->r_offset, | |
12480 | howto->name, | |
12481 | name); | |
12482 | } | |
12483 | ||
0855e32b | 12484 | /* We call elf32_arm_final_link_relocate unless we're completely |
99059e56 RM |
12485 | done, i.e., the relaxation produced the final output we want, |
12486 | and we won't let anybody mess with it. Also, we have to do | |
12487 | addend adjustments in case of a R_ARM_TLS_GOTDESC relocation | |
6a631e86 | 12488 | both in relaxed and non-relaxed cases. */ |
39d911fc TP |
12489 | if ((elf32_arm_tls_transition (info, r_type, h) != (unsigned)r_type) |
12490 | || (IS_ARM_TLS_GNU_RELOC (r_type) | |
12491 | && !((h ? elf32_arm_hash_entry (h)->tls_type : | |
12492 | elf32_arm_local_got_tls_type (input_bfd)[r_symndx]) | |
12493 | & GOT_TLS_GDESC))) | |
12494 | { | |
12495 | r = elf32_arm_tls_relax (globals, input_bfd, input_section, | |
12496 | contents, rel, h == NULL); | |
12497 | /* This may have been marked unresolved because it came from | |
12498 | a shared library. But we've just dealt with that. */ | |
12499 | unresolved_reloc = 0; | |
12500 | } | |
12501 | else | |
12502 | r = bfd_reloc_continue; | |
b38cadfb | 12503 | |
39d911fc TP |
12504 | if (r == bfd_reloc_continue) |
12505 | { | |
12506 | unsigned char branch_type = | |
12507 | h ? ARM_GET_SYM_BRANCH_TYPE (h->target_internal) | |
12508 | : ARM_GET_SYM_BRANCH_TYPE (sym->st_target_internal); | |
12509 | ||
12510 | r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd, | |
12511 | input_section, contents, rel, | |
12512 | relocation, info, sec, name, | |
12513 | sym_type, branch_type, h, | |
12514 | &unresolved_reloc, | |
12515 | &error_message); | |
12516 | } | |
0945cdfd DJ |
12517 | |
12518 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections | |
12519 | because such sections are not SEC_ALLOC and thus ld.so will | |
12520 | not process them. */ | |
12521 | if (unresolved_reloc | |
99059e56 RM |
12522 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
12523 | && h->def_dynamic) | |
1d5316ab AM |
12524 | && _bfd_elf_section_offset (output_bfd, info, input_section, |
12525 | rel->r_offset) != (bfd_vma) -1) | |
0945cdfd DJ |
12526 | { |
12527 | (*_bfd_error_handler) | |
843fe662 L |
12528 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
12529 | input_bfd, | |
12530 | input_section, | |
12531 | (long) rel->r_offset, | |
12532 | howto->name, | |
12533 | h->root.root.string); | |
0945cdfd DJ |
12534 | return FALSE; |
12535 | } | |
252b5132 RH |
12536 | |
12537 | if (r != bfd_reloc_ok) | |
12538 | { | |
252b5132 RH |
12539 | switch (r) |
12540 | { | |
12541 | case bfd_reloc_overflow: | |
cf919dfd PB |
12542 | /* If the overflowing reloc was to an undefined symbol, |
12543 | we have already printed one error message and there | |
12544 | is no point complaining again. */ | |
1a72702b AM |
12545 | if (!h || h->root.type != bfd_link_hash_undefined) |
12546 | (*info->callbacks->reloc_overflow) | |
12547 | (info, (h ? &h->root : NULL), name, howto->name, | |
12548 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
252b5132 RH |
12549 | break; |
12550 | ||
12551 | case bfd_reloc_undefined: | |
1a72702b AM |
12552 | (*info->callbacks->undefined_symbol) |
12553 | (info, name, input_bfd, input_section, rel->r_offset, TRUE); | |
252b5132 RH |
12554 | break; |
12555 | ||
12556 | case bfd_reloc_outofrange: | |
f2a9dd69 | 12557 | error_message = _("out of range"); |
252b5132 RH |
12558 | goto common_error; |
12559 | ||
12560 | case bfd_reloc_notsupported: | |
f2a9dd69 | 12561 | error_message = _("unsupported relocation"); |
252b5132 RH |
12562 | goto common_error; |
12563 | ||
12564 | case bfd_reloc_dangerous: | |
f2a9dd69 | 12565 | /* error_message should already be set. */ |
252b5132 RH |
12566 | goto common_error; |
12567 | ||
12568 | default: | |
f2a9dd69 | 12569 | error_message = _("unknown error"); |
8029a119 | 12570 | /* Fall through. */ |
252b5132 RH |
12571 | |
12572 | common_error: | |
f2a9dd69 | 12573 | BFD_ASSERT (error_message != NULL); |
1a72702b AM |
12574 | (*info->callbacks->reloc_dangerous) |
12575 | (info, error_message, input_bfd, input_section, rel->r_offset); | |
252b5132 RH |
12576 | break; |
12577 | } | |
12578 | } | |
12579 | } | |
12580 | ||
b34976b6 | 12581 | return TRUE; |
252b5132 RH |
12582 | } |
12583 | ||
91d6fa6a | 12584 | /* Add a new unwind edit to the list described by HEAD, TAIL. If TINDEX is zero, |
2468f9c9 | 12585 | adds the edit to the start of the list. (The list must be built in order of |
91d6fa6a | 12586 | ascending TINDEX: the function's callers are primarily responsible for |
2468f9c9 PB |
12587 | maintaining that condition). */ |
12588 | ||
12589 | static void | |
12590 | add_unwind_table_edit (arm_unwind_table_edit **head, | |
12591 | arm_unwind_table_edit **tail, | |
12592 | arm_unwind_edit_type type, | |
12593 | asection *linked_section, | |
91d6fa6a | 12594 | unsigned int tindex) |
2468f9c9 | 12595 | { |
21d799b5 NC |
12596 | arm_unwind_table_edit *new_edit = (arm_unwind_table_edit *) |
12597 | xmalloc (sizeof (arm_unwind_table_edit)); | |
b38cadfb | 12598 | |
2468f9c9 PB |
12599 | new_edit->type = type; |
12600 | new_edit->linked_section = linked_section; | |
91d6fa6a | 12601 | new_edit->index = tindex; |
b38cadfb | 12602 | |
91d6fa6a | 12603 | if (tindex > 0) |
2468f9c9 PB |
12604 | { |
12605 | new_edit->next = NULL; | |
12606 | ||
12607 | if (*tail) | |
12608 | (*tail)->next = new_edit; | |
12609 | ||
12610 | (*tail) = new_edit; | |
12611 | ||
12612 | if (!*head) | |
12613 | (*head) = new_edit; | |
12614 | } | |
12615 | else | |
12616 | { | |
12617 | new_edit->next = *head; | |
12618 | ||
12619 | if (!*tail) | |
12620 | *tail = new_edit; | |
12621 | ||
12622 | *head = new_edit; | |
12623 | } | |
12624 | } | |
12625 | ||
12626 | static _arm_elf_section_data *get_arm_elf_section_data (asection *); | |
12627 | ||
12628 | /* Increase the size of EXIDX_SEC by ADJUST bytes. ADJUST mau be negative. */ | |
12629 | static void | |
12630 | adjust_exidx_size(asection *exidx_sec, int adjust) | |
12631 | { | |
12632 | asection *out_sec; | |
12633 | ||
12634 | if (!exidx_sec->rawsize) | |
12635 | exidx_sec->rawsize = exidx_sec->size; | |
12636 | ||
12637 | bfd_set_section_size (exidx_sec->owner, exidx_sec, exidx_sec->size + adjust); | |
12638 | out_sec = exidx_sec->output_section; | |
12639 | /* Adjust size of output section. */ | |
12640 | bfd_set_section_size (out_sec->owner, out_sec, out_sec->size +adjust); | |
12641 | } | |
12642 | ||
12643 | /* Insert an EXIDX_CANTUNWIND marker at the end of a section. */ | |
12644 | static void | |
12645 | insert_cantunwind_after(asection *text_sec, asection *exidx_sec) | |
12646 | { | |
12647 | struct _arm_elf_section_data *exidx_arm_data; | |
12648 | ||
12649 | exidx_arm_data = get_arm_elf_section_data (exidx_sec); | |
12650 | add_unwind_table_edit ( | |
12651 | &exidx_arm_data->u.exidx.unwind_edit_list, | |
12652 | &exidx_arm_data->u.exidx.unwind_edit_tail, | |
12653 | INSERT_EXIDX_CANTUNWIND_AT_END, text_sec, UINT_MAX); | |
12654 | ||
491d01d3 YU |
12655 | exidx_arm_data->additional_reloc_count++; |
12656 | ||
2468f9c9 PB |
12657 | adjust_exidx_size(exidx_sec, 8); |
12658 | } | |
12659 | ||
12660 | /* Scan .ARM.exidx tables, and create a list describing edits which should be | |
12661 | made to those tables, such that: | |
b38cadfb | 12662 | |
2468f9c9 PB |
12663 | 1. Regions without unwind data are marked with EXIDX_CANTUNWIND entries. |
12664 | 2. Duplicate entries are merged together (EXIDX_CANTUNWIND, or unwind | |
99059e56 | 12665 | codes which have been inlined into the index). |
2468f9c9 | 12666 | |
85fdf906 AH |
12667 | If MERGE_EXIDX_ENTRIES is false, duplicate entries are not merged. |
12668 | ||
2468f9c9 | 12669 | The edits are applied when the tables are written |
b38cadfb | 12670 | (in elf32_arm_write_section). */ |
2468f9c9 PB |
12671 | |
12672 | bfd_boolean | |
12673 | elf32_arm_fix_exidx_coverage (asection **text_section_order, | |
12674 | unsigned int num_text_sections, | |
85fdf906 AH |
12675 | struct bfd_link_info *info, |
12676 | bfd_boolean merge_exidx_entries) | |
2468f9c9 PB |
12677 | { |
12678 | bfd *inp; | |
12679 | unsigned int last_second_word = 0, i; | |
12680 | asection *last_exidx_sec = NULL; | |
12681 | asection *last_text_sec = NULL; | |
12682 | int last_unwind_type = -1; | |
12683 | ||
12684 | /* Walk over all EXIDX sections, and create backlinks from the corrsponding | |
12685 | text sections. */ | |
c72f2fb2 | 12686 | for (inp = info->input_bfds; inp != NULL; inp = inp->link.next) |
2468f9c9 PB |
12687 | { |
12688 | asection *sec; | |
b38cadfb | 12689 | |
2468f9c9 | 12690 | for (sec = inp->sections; sec != NULL; sec = sec->next) |
99059e56 | 12691 | { |
2468f9c9 PB |
12692 | struct bfd_elf_section_data *elf_sec = elf_section_data (sec); |
12693 | Elf_Internal_Shdr *hdr = &elf_sec->this_hdr; | |
b38cadfb | 12694 | |
dec9d5df | 12695 | if (!hdr || hdr->sh_type != SHT_ARM_EXIDX) |
2468f9c9 | 12696 | continue; |
b38cadfb | 12697 | |
2468f9c9 PB |
12698 | if (elf_sec->linked_to) |
12699 | { | |
12700 | Elf_Internal_Shdr *linked_hdr | |
99059e56 | 12701 | = &elf_section_data (elf_sec->linked_to)->this_hdr; |
2468f9c9 | 12702 | struct _arm_elf_section_data *linked_sec_arm_data |
99059e56 | 12703 | = get_arm_elf_section_data (linked_hdr->bfd_section); |
2468f9c9 PB |
12704 | |
12705 | if (linked_sec_arm_data == NULL) | |
99059e56 | 12706 | continue; |
2468f9c9 PB |
12707 | |
12708 | /* Link this .ARM.exidx section back from the text section it | |
99059e56 | 12709 | describes. */ |
2468f9c9 PB |
12710 | linked_sec_arm_data->u.text.arm_exidx_sec = sec; |
12711 | } | |
12712 | } | |
12713 | } | |
12714 | ||
12715 | /* Walk all text sections in order of increasing VMA. Eilminate duplicate | |
12716 | index table entries (EXIDX_CANTUNWIND and inlined unwind opcodes), | |
91d6fa6a | 12717 | and add EXIDX_CANTUNWIND entries for sections with no unwind table data. */ |
2468f9c9 PB |
12718 | |
12719 | for (i = 0; i < num_text_sections; i++) | |
12720 | { | |
12721 | asection *sec = text_section_order[i]; | |
12722 | asection *exidx_sec; | |
12723 | struct _arm_elf_section_data *arm_data = get_arm_elf_section_data (sec); | |
12724 | struct _arm_elf_section_data *exidx_arm_data; | |
12725 | bfd_byte *contents = NULL; | |
12726 | int deleted_exidx_bytes = 0; | |
12727 | bfd_vma j; | |
12728 | arm_unwind_table_edit *unwind_edit_head = NULL; | |
12729 | arm_unwind_table_edit *unwind_edit_tail = NULL; | |
12730 | Elf_Internal_Shdr *hdr; | |
12731 | bfd *ibfd; | |
12732 | ||
12733 | if (arm_data == NULL) | |
99059e56 | 12734 | continue; |
2468f9c9 PB |
12735 | |
12736 | exidx_sec = arm_data->u.text.arm_exidx_sec; | |
12737 | if (exidx_sec == NULL) | |
12738 | { | |
12739 | /* Section has no unwind data. */ | |
12740 | if (last_unwind_type == 0 || !last_exidx_sec) | |
12741 | continue; | |
12742 | ||
12743 | /* Ignore zero sized sections. */ | |
12744 | if (sec->size == 0) | |
12745 | continue; | |
12746 | ||
12747 | insert_cantunwind_after(last_text_sec, last_exidx_sec); | |
12748 | last_unwind_type = 0; | |
12749 | continue; | |
12750 | } | |
12751 | ||
22a8f80e PB |
12752 | /* Skip /DISCARD/ sections. */ |
12753 | if (bfd_is_abs_section (exidx_sec->output_section)) | |
12754 | continue; | |
12755 | ||
2468f9c9 PB |
12756 | hdr = &elf_section_data (exidx_sec)->this_hdr; |
12757 | if (hdr->sh_type != SHT_ARM_EXIDX) | |
99059e56 | 12758 | continue; |
b38cadfb | 12759 | |
2468f9c9 PB |
12760 | exidx_arm_data = get_arm_elf_section_data (exidx_sec); |
12761 | if (exidx_arm_data == NULL) | |
99059e56 | 12762 | continue; |
b38cadfb | 12763 | |
2468f9c9 | 12764 | ibfd = exidx_sec->owner; |
b38cadfb | 12765 | |
2468f9c9 PB |
12766 | if (hdr->contents != NULL) |
12767 | contents = hdr->contents; | |
12768 | else if (! bfd_malloc_and_get_section (ibfd, exidx_sec, &contents)) | |
12769 | /* An error? */ | |
12770 | continue; | |
12771 | ||
ac06903d YU |
12772 | if (last_unwind_type > 0) |
12773 | { | |
12774 | unsigned int first_word = bfd_get_32 (ibfd, contents); | |
12775 | /* Add cantunwind if first unwind item does not match section | |
12776 | start. */ | |
12777 | if (first_word != sec->vma) | |
12778 | { | |
12779 | insert_cantunwind_after (last_text_sec, last_exidx_sec); | |
12780 | last_unwind_type = 0; | |
12781 | } | |
12782 | } | |
12783 | ||
2468f9c9 PB |
12784 | for (j = 0; j < hdr->sh_size; j += 8) |
12785 | { | |
12786 | unsigned int second_word = bfd_get_32 (ibfd, contents + j + 4); | |
12787 | int unwind_type; | |
12788 | int elide = 0; | |
12789 | ||
12790 | /* An EXIDX_CANTUNWIND entry. */ | |
12791 | if (second_word == 1) | |
12792 | { | |
12793 | if (last_unwind_type == 0) | |
12794 | elide = 1; | |
12795 | unwind_type = 0; | |
12796 | } | |
12797 | /* Inlined unwinding data. Merge if equal to previous. */ | |
12798 | else if ((second_word & 0x80000000) != 0) | |
12799 | { | |
85fdf906 AH |
12800 | if (merge_exidx_entries |
12801 | && last_second_word == second_word && last_unwind_type == 1) | |
2468f9c9 PB |
12802 | elide = 1; |
12803 | unwind_type = 1; | |
12804 | last_second_word = second_word; | |
12805 | } | |
12806 | /* Normal table entry. In theory we could merge these too, | |
12807 | but duplicate entries are likely to be much less common. */ | |
12808 | else | |
12809 | unwind_type = 2; | |
12810 | ||
491d01d3 | 12811 | if (elide && !bfd_link_relocatable (info)) |
2468f9c9 PB |
12812 | { |
12813 | add_unwind_table_edit (&unwind_edit_head, &unwind_edit_tail, | |
12814 | DELETE_EXIDX_ENTRY, NULL, j / 8); | |
12815 | ||
12816 | deleted_exidx_bytes += 8; | |
12817 | } | |
12818 | ||
12819 | last_unwind_type = unwind_type; | |
12820 | } | |
12821 | ||
12822 | /* Free contents if we allocated it ourselves. */ | |
12823 | if (contents != hdr->contents) | |
99059e56 | 12824 | free (contents); |
2468f9c9 PB |
12825 | |
12826 | /* Record edits to be applied later (in elf32_arm_write_section). */ | |
12827 | exidx_arm_data->u.exidx.unwind_edit_list = unwind_edit_head; | |
12828 | exidx_arm_data->u.exidx.unwind_edit_tail = unwind_edit_tail; | |
b38cadfb | 12829 | |
2468f9c9 PB |
12830 | if (deleted_exidx_bytes > 0) |
12831 | adjust_exidx_size(exidx_sec, -deleted_exidx_bytes); | |
12832 | ||
12833 | last_exidx_sec = exidx_sec; | |
12834 | last_text_sec = sec; | |
12835 | } | |
12836 | ||
12837 | /* Add terminating CANTUNWIND entry. */ | |
491d01d3 YU |
12838 | if (!bfd_link_relocatable (info) && last_exidx_sec |
12839 | && last_unwind_type != 0) | |
2468f9c9 PB |
12840 | insert_cantunwind_after(last_text_sec, last_exidx_sec); |
12841 | ||
12842 | return TRUE; | |
12843 | } | |
12844 | ||
3e6b1042 DJ |
12845 | static bfd_boolean |
12846 | elf32_arm_output_glue_section (struct bfd_link_info *info, bfd *obfd, | |
12847 | bfd *ibfd, const char *name) | |
12848 | { | |
12849 | asection *sec, *osec; | |
12850 | ||
3d4d4302 | 12851 | sec = bfd_get_linker_section (ibfd, name); |
3e6b1042 DJ |
12852 | if (sec == NULL || (sec->flags & SEC_EXCLUDE) != 0) |
12853 | return TRUE; | |
12854 | ||
12855 | osec = sec->output_section; | |
12856 | if (elf32_arm_write_section (obfd, info, sec, sec->contents)) | |
12857 | return TRUE; | |
12858 | ||
12859 | if (! bfd_set_section_contents (obfd, osec, sec->contents, | |
12860 | sec->output_offset, sec->size)) | |
12861 | return FALSE; | |
12862 | ||
12863 | return TRUE; | |
12864 | } | |
12865 | ||
12866 | static bfd_boolean | |
12867 | elf32_arm_final_link (bfd *abfd, struct bfd_link_info *info) | |
12868 | { | |
12869 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (info); | |
fe33d2fa | 12870 | asection *sec, *osec; |
3e6b1042 | 12871 | |
4dfe6ac6 NC |
12872 | if (globals == NULL) |
12873 | return FALSE; | |
12874 | ||
3e6b1042 DJ |
12875 | /* Invoke the regular ELF backend linker to do all the work. */ |
12876 | if (!bfd_elf_final_link (abfd, info)) | |
12877 | return FALSE; | |
12878 | ||
fe33d2fa CL |
12879 | /* Process stub sections (eg BE8 encoding, ...). */ |
12880 | struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info); | |
7292b3ac | 12881 | unsigned int i; |
cdb21a0a NS |
12882 | for (i=0; i<htab->top_id; i++) |
12883 | { | |
12884 | sec = htab->stub_group[i].stub_sec; | |
12885 | /* Only process it once, in its link_sec slot. */ | |
12886 | if (sec && i == htab->stub_group[i].link_sec->id) | |
12887 | { | |
12888 | osec = sec->output_section; | |
12889 | elf32_arm_write_section (abfd, info, sec, sec->contents); | |
12890 | if (! bfd_set_section_contents (abfd, osec, sec->contents, | |
12891 | sec->output_offset, sec->size)) | |
12892 | return FALSE; | |
12893 | } | |
fe33d2fa | 12894 | } |
fe33d2fa | 12895 | |
3e6b1042 DJ |
12896 | /* Write out any glue sections now that we have created all the |
12897 | stubs. */ | |
12898 | if (globals->bfd_of_glue_owner != NULL) | |
12899 | { | |
12900 | if (! elf32_arm_output_glue_section (info, abfd, | |
12901 | globals->bfd_of_glue_owner, | |
12902 | ARM2THUMB_GLUE_SECTION_NAME)) | |
12903 | return FALSE; | |
12904 | ||
12905 | if (! elf32_arm_output_glue_section (info, abfd, | |
12906 | globals->bfd_of_glue_owner, | |
12907 | THUMB2ARM_GLUE_SECTION_NAME)) | |
12908 | return FALSE; | |
12909 | ||
12910 | if (! elf32_arm_output_glue_section (info, abfd, | |
12911 | globals->bfd_of_glue_owner, | |
12912 | VFP11_ERRATUM_VENEER_SECTION_NAME)) | |
12913 | return FALSE; | |
12914 | ||
a504d23a LA |
12915 | if (! elf32_arm_output_glue_section (info, abfd, |
12916 | globals->bfd_of_glue_owner, | |
12917 | STM32L4XX_ERRATUM_VENEER_SECTION_NAME)) | |
12918 | return FALSE; | |
12919 | ||
3e6b1042 DJ |
12920 | if (! elf32_arm_output_glue_section (info, abfd, |
12921 | globals->bfd_of_glue_owner, | |
12922 | ARM_BX_GLUE_SECTION_NAME)) | |
12923 | return FALSE; | |
12924 | } | |
12925 | ||
12926 | return TRUE; | |
12927 | } | |
12928 | ||
5968a7b8 NC |
12929 | /* Return a best guess for the machine number based on the attributes. */ |
12930 | ||
12931 | static unsigned int | |
12932 | bfd_arm_get_mach_from_attributes (bfd * abfd) | |
12933 | { | |
12934 | int arch = bfd_elf_get_obj_attr_int (abfd, OBJ_ATTR_PROC, Tag_CPU_arch); | |
12935 | ||
12936 | switch (arch) | |
12937 | { | |
12938 | case TAG_CPU_ARCH_V4: return bfd_mach_arm_4; | |
12939 | case TAG_CPU_ARCH_V4T: return bfd_mach_arm_4T; | |
12940 | case TAG_CPU_ARCH_V5T: return bfd_mach_arm_5T; | |
12941 | ||
12942 | case TAG_CPU_ARCH_V5TE: | |
12943 | { | |
12944 | char * name; | |
12945 | ||
12946 | BFD_ASSERT (Tag_CPU_name < NUM_KNOWN_OBJ_ATTRIBUTES); | |
12947 | name = elf_known_obj_attributes (abfd) [OBJ_ATTR_PROC][Tag_CPU_name].s; | |
12948 | ||
12949 | if (name) | |
12950 | { | |
12951 | if (strcmp (name, "IWMMXT2") == 0) | |
12952 | return bfd_mach_arm_iWMMXt2; | |
12953 | ||
12954 | if (strcmp (name, "IWMMXT") == 0) | |
6034aab8 | 12955 | return bfd_mach_arm_iWMMXt; |
088ca6c1 NC |
12956 | |
12957 | if (strcmp (name, "XSCALE") == 0) | |
12958 | { | |
12959 | int wmmx; | |
12960 | ||
12961 | BFD_ASSERT (Tag_WMMX_arch < NUM_KNOWN_OBJ_ATTRIBUTES); | |
12962 | wmmx = elf_known_obj_attributes (abfd) [OBJ_ATTR_PROC][Tag_WMMX_arch].i; | |
12963 | switch (wmmx) | |
12964 | { | |
12965 | case 1: return bfd_mach_arm_iWMMXt; | |
12966 | case 2: return bfd_mach_arm_iWMMXt2; | |
12967 | default: return bfd_mach_arm_XScale; | |
12968 | } | |
12969 | } | |
5968a7b8 NC |
12970 | } |
12971 | ||
12972 | return bfd_mach_arm_5TE; | |
12973 | } | |
12974 | ||
12975 | default: | |
12976 | return bfd_mach_arm_unknown; | |
12977 | } | |
12978 | } | |
12979 | ||
c178919b NC |
12980 | /* Set the right machine number. */ |
12981 | ||
12982 | static bfd_boolean | |
57e8b36a | 12983 | elf32_arm_object_p (bfd *abfd) |
c178919b | 12984 | { |
5a6c6817 | 12985 | unsigned int mach; |
57e8b36a | 12986 | |
5a6c6817 | 12987 | mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION); |
c178919b | 12988 | |
5968a7b8 NC |
12989 | if (mach == bfd_mach_arm_unknown) |
12990 | { | |
12991 | if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT) | |
12992 | mach = bfd_mach_arm_ep9312; | |
12993 | else | |
12994 | mach = bfd_arm_get_mach_from_attributes (abfd); | |
12995 | } | |
c178919b | 12996 | |
5968a7b8 | 12997 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach); |
c178919b NC |
12998 | return TRUE; |
12999 | } | |
13000 | ||
fc830a83 | 13001 | /* Function to keep ARM specific flags in the ELF header. */ |
3c9458e9 | 13002 | |
b34976b6 | 13003 | static bfd_boolean |
57e8b36a | 13004 | elf32_arm_set_private_flags (bfd *abfd, flagword flags) |
252b5132 RH |
13005 | { |
13006 | if (elf_flags_init (abfd) | |
13007 | && elf_elfheader (abfd)->e_flags != flags) | |
13008 | { | |
fc830a83 NC |
13009 | if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN) |
13010 | { | |
fd2ec330 | 13011 | if (flags & EF_ARM_INTERWORK) |
d003868e AM |
13012 | (*_bfd_error_handler) |
13013 | (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"), | |
13014 | abfd); | |
fc830a83 | 13015 | else |
d003868e AM |
13016 | _bfd_error_handler |
13017 | (_("Warning: Clearing the interworking flag of %B due to outside request"), | |
13018 | abfd); | |
fc830a83 | 13019 | } |
252b5132 RH |
13020 | } |
13021 | else | |
13022 | { | |
13023 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 | 13024 | elf_flags_init (abfd) = TRUE; |
252b5132 RH |
13025 | } |
13026 | ||
b34976b6 | 13027 | return TRUE; |
252b5132 RH |
13028 | } |
13029 | ||
fc830a83 | 13030 | /* Copy backend specific data from one object module to another. */ |
9b485d32 | 13031 | |
b34976b6 | 13032 | static bfd_boolean |
57e8b36a | 13033 | elf32_arm_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
252b5132 RH |
13034 | { |
13035 | flagword in_flags; | |
13036 | flagword out_flags; | |
13037 | ||
0ffa91dd | 13038 | if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd)) |
b34976b6 | 13039 | return TRUE; |
252b5132 | 13040 | |
fc830a83 | 13041 | in_flags = elf_elfheader (ibfd)->e_flags; |
252b5132 RH |
13042 | out_flags = elf_elfheader (obfd)->e_flags; |
13043 | ||
fc830a83 NC |
13044 | if (elf_flags_init (obfd) |
13045 | && EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN | |
13046 | && in_flags != out_flags) | |
252b5132 | 13047 | { |
252b5132 | 13048 | /* Cannot mix APCS26 and APCS32 code. */ |
fd2ec330 | 13049 | if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26)) |
b34976b6 | 13050 | return FALSE; |
252b5132 RH |
13051 | |
13052 | /* Cannot mix float APCS and non-float APCS code. */ | |
fd2ec330 | 13053 | if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT)) |
b34976b6 | 13054 | return FALSE; |
252b5132 RH |
13055 | |
13056 | /* If the src and dest have different interworking flags | |
99059e56 | 13057 | then turn off the interworking bit. */ |
fd2ec330 | 13058 | if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK)) |
252b5132 | 13059 | { |
fd2ec330 | 13060 | if (out_flags & EF_ARM_INTERWORK) |
d003868e AM |
13061 | _bfd_error_handler |
13062 | (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"), | |
13063 | obfd, ibfd); | |
252b5132 | 13064 | |
fd2ec330 | 13065 | in_flags &= ~EF_ARM_INTERWORK; |
252b5132 | 13066 | } |
1006ba19 PB |
13067 | |
13068 | /* Likewise for PIC, though don't warn for this case. */ | |
fd2ec330 PB |
13069 | if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC)) |
13070 | in_flags &= ~EF_ARM_PIC; | |
252b5132 RH |
13071 | } |
13072 | ||
13073 | elf_elfheader (obfd)->e_flags = in_flags; | |
b34976b6 | 13074 | elf_flags_init (obfd) = TRUE; |
252b5132 | 13075 | |
e2349352 | 13076 | return _bfd_elf_copy_private_bfd_data (ibfd, obfd); |
ee065d83 PB |
13077 | } |
13078 | ||
13079 | /* Values for Tag_ABI_PCS_R9_use. */ | |
13080 | enum | |
13081 | { | |
13082 | AEABI_R9_V6, | |
13083 | AEABI_R9_SB, | |
13084 | AEABI_R9_TLS, | |
13085 | AEABI_R9_unused | |
13086 | }; | |
13087 | ||
13088 | /* Values for Tag_ABI_PCS_RW_data. */ | |
13089 | enum | |
13090 | { | |
13091 | AEABI_PCS_RW_data_absolute, | |
13092 | AEABI_PCS_RW_data_PCrel, | |
13093 | AEABI_PCS_RW_data_SBrel, | |
13094 | AEABI_PCS_RW_data_unused | |
13095 | }; | |
13096 | ||
13097 | /* Values for Tag_ABI_enum_size. */ | |
13098 | enum | |
13099 | { | |
13100 | AEABI_enum_unused, | |
13101 | AEABI_enum_short, | |
13102 | AEABI_enum_wide, | |
13103 | AEABI_enum_forced_wide | |
13104 | }; | |
13105 | ||
104d59d1 JM |
13106 | /* Determine whether an object attribute tag takes an integer, a |
13107 | string or both. */ | |
906e58ca | 13108 | |
104d59d1 JM |
13109 | static int |
13110 | elf32_arm_obj_attrs_arg_type (int tag) | |
13111 | { | |
13112 | if (tag == Tag_compatibility) | |
3483fe2e | 13113 | return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_STR_VAL; |
2d0bb761 | 13114 | else if (tag == Tag_nodefaults) |
3483fe2e AS |
13115 | return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_NO_DEFAULT; |
13116 | else if (tag == Tag_CPU_raw_name || tag == Tag_CPU_name) | |
13117 | return ATTR_TYPE_FLAG_STR_VAL; | |
104d59d1 | 13118 | else if (tag < 32) |
3483fe2e | 13119 | return ATTR_TYPE_FLAG_INT_VAL; |
104d59d1 | 13120 | else |
3483fe2e | 13121 | return (tag & 1) != 0 ? ATTR_TYPE_FLAG_STR_VAL : ATTR_TYPE_FLAG_INT_VAL; |
104d59d1 JM |
13122 | } |
13123 | ||
5aa6ff7c AS |
13124 | /* The ABI defines that Tag_conformance should be emitted first, and that |
13125 | Tag_nodefaults should be second (if either is defined). This sets those | |
13126 | two positions, and bumps up the position of all the remaining tags to | |
13127 | compensate. */ | |
13128 | static int | |
13129 | elf32_arm_obj_attrs_order (int num) | |
13130 | { | |
3de4a297 | 13131 | if (num == LEAST_KNOWN_OBJ_ATTRIBUTE) |
5aa6ff7c | 13132 | return Tag_conformance; |
3de4a297 | 13133 | if (num == LEAST_KNOWN_OBJ_ATTRIBUTE + 1) |
5aa6ff7c AS |
13134 | return Tag_nodefaults; |
13135 | if ((num - 2) < Tag_nodefaults) | |
13136 | return num - 2; | |
13137 | if ((num - 1) < Tag_conformance) | |
13138 | return num - 1; | |
13139 | return num; | |
13140 | } | |
13141 | ||
e8b36cd1 JM |
13142 | /* Attribute numbers >=64 (mod 128) can be safely ignored. */ |
13143 | static bfd_boolean | |
13144 | elf32_arm_obj_attrs_handle_unknown (bfd *abfd, int tag) | |
13145 | { | |
13146 | if ((tag & 127) < 64) | |
13147 | { | |
13148 | _bfd_error_handler | |
13149 | (_("%B: Unknown mandatory EABI object attribute %d"), | |
13150 | abfd, tag); | |
13151 | bfd_set_error (bfd_error_bad_value); | |
13152 | return FALSE; | |
13153 | } | |
13154 | else | |
13155 | { | |
13156 | _bfd_error_handler | |
13157 | (_("Warning: %B: Unknown EABI object attribute %d"), | |
13158 | abfd, tag); | |
13159 | return TRUE; | |
13160 | } | |
13161 | } | |
13162 | ||
91e22acd AS |
13163 | /* Read the architecture from the Tag_also_compatible_with attribute, if any. |
13164 | Returns -1 if no architecture could be read. */ | |
13165 | ||
13166 | static int | |
13167 | get_secondary_compatible_arch (bfd *abfd) | |
13168 | { | |
13169 | obj_attribute *attr = | |
13170 | &elf_known_obj_attributes_proc (abfd)[Tag_also_compatible_with]; | |
13171 | ||
13172 | /* Note: the tag and its argument below are uleb128 values, though | |
13173 | currently-defined values fit in one byte for each. */ | |
13174 | if (attr->s | |
13175 | && attr->s[0] == Tag_CPU_arch | |
13176 | && (attr->s[1] & 128) != 128 | |
13177 | && attr->s[2] == 0) | |
13178 | return attr->s[1]; | |
13179 | ||
13180 | /* This tag is "safely ignorable", so don't complain if it looks funny. */ | |
13181 | return -1; | |
13182 | } | |
13183 | ||
13184 | /* Set, or unset, the architecture of the Tag_also_compatible_with attribute. | |
13185 | The tag is removed if ARCH is -1. */ | |
13186 | ||
8e79c3df | 13187 | static void |
91e22acd | 13188 | set_secondary_compatible_arch (bfd *abfd, int arch) |
8e79c3df | 13189 | { |
91e22acd AS |
13190 | obj_attribute *attr = |
13191 | &elf_known_obj_attributes_proc (abfd)[Tag_also_compatible_with]; | |
8e79c3df | 13192 | |
91e22acd AS |
13193 | if (arch == -1) |
13194 | { | |
13195 | attr->s = NULL; | |
13196 | return; | |
8e79c3df | 13197 | } |
91e22acd AS |
13198 | |
13199 | /* Note: the tag and its argument below are uleb128 values, though | |
13200 | currently-defined values fit in one byte for each. */ | |
13201 | if (!attr->s) | |
21d799b5 | 13202 | attr->s = (char *) bfd_alloc (abfd, 3); |
91e22acd AS |
13203 | attr->s[0] = Tag_CPU_arch; |
13204 | attr->s[1] = arch; | |
13205 | attr->s[2] = '\0'; | |
8e79c3df CM |
13206 | } |
13207 | ||
91e22acd AS |
13208 | /* Combine two values for Tag_CPU_arch, taking secondary compatibility tags |
13209 | into account. */ | |
13210 | ||
13211 | static int | |
13212 | tag_cpu_arch_combine (bfd *ibfd, int oldtag, int *secondary_compat_out, | |
13213 | int newtag, int secondary_compat) | |
8e79c3df | 13214 | { |
91e22acd AS |
13215 | #define T(X) TAG_CPU_ARCH_##X |
13216 | int tagl, tagh, result; | |
13217 | const int v6t2[] = | |
13218 | { | |
13219 | T(V6T2), /* PRE_V4. */ | |
13220 | T(V6T2), /* V4. */ | |
13221 | T(V6T2), /* V4T. */ | |
13222 | T(V6T2), /* V5T. */ | |
13223 | T(V6T2), /* V5TE. */ | |
13224 | T(V6T2), /* V5TEJ. */ | |
13225 | T(V6T2), /* V6. */ | |
13226 | T(V7), /* V6KZ. */ | |
13227 | T(V6T2) /* V6T2. */ | |
13228 | }; | |
13229 | const int v6k[] = | |
13230 | { | |
13231 | T(V6K), /* PRE_V4. */ | |
13232 | T(V6K), /* V4. */ | |
13233 | T(V6K), /* V4T. */ | |
13234 | T(V6K), /* V5T. */ | |
13235 | T(V6K), /* V5TE. */ | |
13236 | T(V6K), /* V5TEJ. */ | |
13237 | T(V6K), /* V6. */ | |
13238 | T(V6KZ), /* V6KZ. */ | |
13239 | T(V7), /* V6T2. */ | |
13240 | T(V6K) /* V6K. */ | |
13241 | }; | |
13242 | const int v7[] = | |
13243 | { | |
13244 | T(V7), /* PRE_V4. */ | |
13245 | T(V7), /* V4. */ | |
13246 | T(V7), /* V4T. */ | |
13247 | T(V7), /* V5T. */ | |
13248 | T(V7), /* V5TE. */ | |
13249 | T(V7), /* V5TEJ. */ | |
13250 | T(V7), /* V6. */ | |
13251 | T(V7), /* V6KZ. */ | |
13252 | T(V7), /* V6T2. */ | |
13253 | T(V7), /* V6K. */ | |
13254 | T(V7) /* V7. */ | |
13255 | }; | |
13256 | const int v6_m[] = | |
13257 | { | |
13258 | -1, /* PRE_V4. */ | |
13259 | -1, /* V4. */ | |
13260 | T(V6K), /* V4T. */ | |
13261 | T(V6K), /* V5T. */ | |
13262 | T(V6K), /* V5TE. */ | |
13263 | T(V6K), /* V5TEJ. */ | |
13264 | T(V6K), /* V6. */ | |
13265 | T(V6KZ), /* V6KZ. */ | |
13266 | T(V7), /* V6T2. */ | |
13267 | T(V6K), /* V6K. */ | |
13268 | T(V7), /* V7. */ | |
13269 | T(V6_M) /* V6_M. */ | |
13270 | }; | |
13271 | const int v6s_m[] = | |
13272 | { | |
13273 | -1, /* PRE_V4. */ | |
13274 | -1, /* V4. */ | |
13275 | T(V6K), /* V4T. */ | |
13276 | T(V6K), /* V5T. */ | |
13277 | T(V6K), /* V5TE. */ | |
13278 | T(V6K), /* V5TEJ. */ | |
13279 | T(V6K), /* V6. */ | |
13280 | T(V6KZ), /* V6KZ. */ | |
13281 | T(V7), /* V6T2. */ | |
13282 | T(V6K), /* V6K. */ | |
13283 | T(V7), /* V7. */ | |
13284 | T(V6S_M), /* V6_M. */ | |
13285 | T(V6S_M) /* V6S_M. */ | |
13286 | }; | |
9e3c6df6 PB |
13287 | const int v7e_m[] = |
13288 | { | |
13289 | -1, /* PRE_V4. */ | |
13290 | -1, /* V4. */ | |
13291 | T(V7E_M), /* V4T. */ | |
13292 | T(V7E_M), /* V5T. */ | |
13293 | T(V7E_M), /* V5TE. */ | |
13294 | T(V7E_M), /* V5TEJ. */ | |
13295 | T(V7E_M), /* V6. */ | |
13296 | T(V7E_M), /* V6KZ. */ | |
13297 | T(V7E_M), /* V6T2. */ | |
13298 | T(V7E_M), /* V6K. */ | |
13299 | T(V7E_M), /* V7. */ | |
13300 | T(V7E_M), /* V6_M. */ | |
13301 | T(V7E_M), /* V6S_M. */ | |
13302 | T(V7E_M) /* V7E_M. */ | |
13303 | }; | |
bca38921 MGD |
13304 | const int v8[] = |
13305 | { | |
13306 | T(V8), /* PRE_V4. */ | |
13307 | T(V8), /* V4. */ | |
13308 | T(V8), /* V4T. */ | |
13309 | T(V8), /* V5T. */ | |
13310 | T(V8), /* V5TE. */ | |
13311 | T(V8), /* V5TEJ. */ | |
13312 | T(V8), /* V6. */ | |
13313 | T(V8), /* V6KZ. */ | |
13314 | T(V8), /* V6T2. */ | |
13315 | T(V8), /* V6K. */ | |
13316 | T(V8), /* V7. */ | |
13317 | T(V8), /* V6_M. */ | |
13318 | T(V8), /* V6S_M. */ | |
13319 | T(V8), /* V7E_M. */ | |
13320 | T(V8) /* V8. */ | |
13321 | }; | |
2fd158eb TP |
13322 | const int v8m_baseline[] = |
13323 | { | |
13324 | -1, /* PRE_V4. */ | |
13325 | -1, /* V4. */ | |
13326 | -1, /* V4T. */ | |
13327 | -1, /* V5T. */ | |
13328 | -1, /* V5TE. */ | |
13329 | -1, /* V5TEJ. */ | |
13330 | -1, /* V6. */ | |
13331 | -1, /* V6KZ. */ | |
13332 | -1, /* V6T2. */ | |
13333 | -1, /* V6K. */ | |
13334 | -1, /* V7. */ | |
13335 | T(V8M_BASE), /* V6_M. */ | |
13336 | T(V8M_BASE), /* V6S_M. */ | |
13337 | -1, /* V7E_M. */ | |
13338 | -1, /* V8. */ | |
13339 | -1, | |
13340 | T(V8M_BASE) /* V8-M BASELINE. */ | |
13341 | }; | |
13342 | const int v8m_mainline[] = | |
13343 | { | |
13344 | -1, /* PRE_V4. */ | |
13345 | -1, /* V4. */ | |
13346 | -1, /* V4T. */ | |
13347 | -1, /* V5T. */ | |
13348 | -1, /* V5TE. */ | |
13349 | -1, /* V5TEJ. */ | |
13350 | -1, /* V6. */ | |
13351 | -1, /* V6KZ. */ | |
13352 | -1, /* V6T2. */ | |
13353 | -1, /* V6K. */ | |
13354 | T(V8M_MAIN), /* V7. */ | |
13355 | T(V8M_MAIN), /* V6_M. */ | |
13356 | T(V8M_MAIN), /* V6S_M. */ | |
13357 | T(V8M_MAIN), /* V7E_M. */ | |
13358 | -1, /* V8. */ | |
13359 | -1, | |
13360 | T(V8M_MAIN), /* V8-M BASELINE. */ | |
13361 | T(V8M_MAIN) /* V8-M MAINLINE. */ | |
13362 | }; | |
91e22acd AS |
13363 | const int v4t_plus_v6_m[] = |
13364 | { | |
13365 | -1, /* PRE_V4. */ | |
13366 | -1, /* V4. */ | |
13367 | T(V4T), /* V4T. */ | |
13368 | T(V5T), /* V5T. */ | |
13369 | T(V5TE), /* V5TE. */ | |
13370 | T(V5TEJ), /* V5TEJ. */ | |
13371 | T(V6), /* V6. */ | |
13372 | T(V6KZ), /* V6KZ. */ | |
13373 | T(V6T2), /* V6T2. */ | |
13374 | T(V6K), /* V6K. */ | |
13375 | T(V7), /* V7. */ | |
13376 | T(V6_M), /* V6_M. */ | |
13377 | T(V6S_M), /* V6S_M. */ | |
9e3c6df6 | 13378 | T(V7E_M), /* V7E_M. */ |
bca38921 | 13379 | T(V8), /* V8. */ |
4ed7ed8d | 13380 | -1, /* Unused. */ |
2fd158eb TP |
13381 | T(V8M_BASE), /* V8-M BASELINE. */ |
13382 | T(V8M_MAIN), /* V8-M MAINLINE. */ | |
91e22acd AS |
13383 | T(V4T_PLUS_V6_M) /* V4T plus V6_M. */ |
13384 | }; | |
13385 | const int *comb[] = | |
13386 | { | |
13387 | v6t2, | |
13388 | v6k, | |
13389 | v7, | |
13390 | v6_m, | |
13391 | v6s_m, | |
9e3c6df6 | 13392 | v7e_m, |
bca38921 | 13393 | v8, |
4ed7ed8d | 13394 | NULL, |
2fd158eb TP |
13395 | v8m_baseline, |
13396 | v8m_mainline, | |
91e22acd AS |
13397 | /* Pseudo-architecture. */ |
13398 | v4t_plus_v6_m | |
13399 | }; | |
13400 | ||
13401 | /* Check we've not got a higher architecture than we know about. */ | |
13402 | ||
9e3c6df6 | 13403 | if (oldtag > MAX_TAG_CPU_ARCH || newtag > MAX_TAG_CPU_ARCH) |
91e22acd | 13404 | { |
3895f852 | 13405 | _bfd_error_handler (_("error: %B: Unknown CPU architecture"), ibfd); |
91e22acd AS |
13406 | return -1; |
13407 | } | |
13408 | ||
13409 | /* Override old tag if we have a Tag_also_compatible_with on the output. */ | |
13410 | ||
13411 | if ((oldtag == T(V6_M) && *secondary_compat_out == T(V4T)) | |
13412 | || (oldtag == T(V4T) && *secondary_compat_out == T(V6_M))) | |
13413 | oldtag = T(V4T_PLUS_V6_M); | |
13414 | ||
13415 | /* And override the new tag if we have a Tag_also_compatible_with on the | |
13416 | input. */ | |
13417 | ||
13418 | if ((newtag == T(V6_M) && secondary_compat == T(V4T)) | |
13419 | || (newtag == T(V4T) && secondary_compat == T(V6_M))) | |
13420 | newtag = T(V4T_PLUS_V6_M); | |
13421 | ||
13422 | tagl = (oldtag < newtag) ? oldtag : newtag; | |
13423 | result = tagh = (oldtag > newtag) ? oldtag : newtag; | |
13424 | ||
13425 | /* Architectures before V6KZ add features monotonically. */ | |
13426 | if (tagh <= TAG_CPU_ARCH_V6KZ) | |
13427 | return result; | |
13428 | ||
4ed7ed8d | 13429 | result = comb[tagh - T(V6T2)] ? comb[tagh - T(V6T2)][tagl] : -1; |
91e22acd AS |
13430 | |
13431 | /* Use Tag_CPU_arch == V4T and Tag_also_compatible_with (Tag_CPU_arch V6_M) | |
13432 | as the canonical version. */ | |
13433 | if (result == T(V4T_PLUS_V6_M)) | |
13434 | { | |
13435 | result = T(V4T); | |
13436 | *secondary_compat_out = T(V6_M); | |
13437 | } | |
13438 | else | |
13439 | *secondary_compat_out = -1; | |
13440 | ||
13441 | if (result == -1) | |
13442 | { | |
3895f852 | 13443 | _bfd_error_handler (_("error: %B: Conflicting CPU architectures %d/%d"), |
91e22acd AS |
13444 | ibfd, oldtag, newtag); |
13445 | return -1; | |
13446 | } | |
13447 | ||
13448 | return result; | |
13449 | #undef T | |
8e79c3df CM |
13450 | } |
13451 | ||
ac56ee8f MGD |
13452 | /* Query attributes object to see if integer divide instructions may be |
13453 | present in an object. */ | |
13454 | static bfd_boolean | |
13455 | elf32_arm_attributes_accept_div (const obj_attribute *attr) | |
13456 | { | |
13457 | int arch = attr[Tag_CPU_arch].i; | |
13458 | int profile = attr[Tag_CPU_arch_profile].i; | |
13459 | ||
13460 | switch (attr[Tag_DIV_use].i) | |
13461 | { | |
13462 | case 0: | |
13463 | /* Integer divide allowed if instruction contained in archetecture. */ | |
13464 | if (arch == TAG_CPU_ARCH_V7 && (profile == 'R' || profile == 'M')) | |
13465 | return TRUE; | |
13466 | else if (arch >= TAG_CPU_ARCH_V7E_M) | |
13467 | return TRUE; | |
13468 | else | |
13469 | return FALSE; | |
13470 | ||
13471 | case 1: | |
13472 | /* Integer divide explicitly prohibited. */ | |
13473 | return FALSE; | |
13474 | ||
13475 | default: | |
13476 | /* Unrecognised case - treat as allowing divide everywhere. */ | |
13477 | case 2: | |
13478 | /* Integer divide allowed in ARM state. */ | |
13479 | return TRUE; | |
13480 | } | |
13481 | } | |
13482 | ||
13483 | /* Query attributes object to see if integer divide instructions are | |
13484 | forbidden to be in the object. This is not the inverse of | |
13485 | elf32_arm_attributes_accept_div. */ | |
13486 | static bfd_boolean | |
13487 | elf32_arm_attributes_forbid_div (const obj_attribute *attr) | |
13488 | { | |
13489 | return attr[Tag_DIV_use].i == 1; | |
13490 | } | |
13491 | ||
ee065d83 PB |
13492 | /* Merge EABI object attributes from IBFD into OBFD. Raise an error if there |
13493 | are conflicting attributes. */ | |
906e58ca | 13494 | |
ee065d83 PB |
13495 | static bfd_boolean |
13496 | elf32_arm_merge_eabi_attributes (bfd *ibfd, bfd *obfd) | |
13497 | { | |
104d59d1 JM |
13498 | obj_attribute *in_attr; |
13499 | obj_attribute *out_attr; | |
ee065d83 PB |
13500 | /* Some tags have 0 = don't care, 1 = strong requirement, |
13501 | 2 = weak requirement. */ | |
91e22acd | 13502 | static const int order_021[3] = {0, 2, 1}; |
ee065d83 | 13503 | int i; |
91e22acd | 13504 | bfd_boolean result = TRUE; |
9274e9de | 13505 | const char *sec_name = get_elf_backend_data (ibfd)->obj_attrs_section; |
ee065d83 | 13506 | |
3e6b1042 DJ |
13507 | /* Skip the linker stubs file. This preserves previous behavior |
13508 | of accepting unknown attributes in the first input file - but | |
13509 | is that a bug? */ | |
13510 | if (ibfd->flags & BFD_LINKER_CREATED) | |
13511 | return TRUE; | |
13512 | ||
9274e9de TG |
13513 | /* Skip any input that hasn't attribute section. |
13514 | This enables to link object files without attribute section with | |
13515 | any others. */ | |
13516 | if (bfd_get_section_by_name (ibfd, sec_name) == NULL) | |
13517 | return TRUE; | |
13518 | ||
104d59d1 | 13519 | if (!elf_known_obj_attributes_proc (obfd)[0].i) |
ee065d83 PB |
13520 | { |
13521 | /* This is the first object. Copy the attributes. */ | |
104d59d1 | 13522 | _bfd_elf_copy_obj_attributes (ibfd, obfd); |
004ae526 | 13523 | |
cd21e546 MGD |
13524 | out_attr = elf_known_obj_attributes_proc (obfd); |
13525 | ||
004ae526 PB |
13526 | /* Use the Tag_null value to indicate the attributes have been |
13527 | initialized. */ | |
cd21e546 | 13528 | out_attr[0].i = 1; |
004ae526 | 13529 | |
cd21e546 MGD |
13530 | /* We do not output objects with Tag_MPextension_use_legacy - we move |
13531 | the attribute's value to Tag_MPextension_use. */ | |
13532 | if (out_attr[Tag_MPextension_use_legacy].i != 0) | |
13533 | { | |
13534 | if (out_attr[Tag_MPextension_use].i != 0 | |
13535 | && out_attr[Tag_MPextension_use_legacy].i | |
99059e56 | 13536 | != out_attr[Tag_MPextension_use].i) |
cd21e546 MGD |
13537 | { |
13538 | _bfd_error_handler | |
13539 | (_("Error: %B has both the current and legacy " | |
13540 | "Tag_MPextension_use attributes"), ibfd); | |
13541 | result = FALSE; | |
13542 | } | |
13543 | ||
13544 | out_attr[Tag_MPextension_use] = | |
13545 | out_attr[Tag_MPextension_use_legacy]; | |
13546 | out_attr[Tag_MPextension_use_legacy].type = 0; | |
13547 | out_attr[Tag_MPextension_use_legacy].i = 0; | |
13548 | } | |
13549 | ||
13550 | return result; | |
ee065d83 PB |
13551 | } |
13552 | ||
104d59d1 JM |
13553 | in_attr = elf_known_obj_attributes_proc (ibfd); |
13554 | out_attr = elf_known_obj_attributes_proc (obfd); | |
ee065d83 PB |
13555 | /* This needs to happen before Tag_ABI_FP_number_model is merged. */ |
13556 | if (in_attr[Tag_ABI_VFP_args].i != out_attr[Tag_ABI_VFP_args].i) | |
13557 | { | |
5c294fee TG |
13558 | /* Ignore mismatches if the object doesn't use floating point or is |
13559 | floating point ABI independent. */ | |
13560 | if (out_attr[Tag_ABI_FP_number_model].i == AEABI_FP_number_model_none | |
13561 | || (in_attr[Tag_ABI_FP_number_model].i != AEABI_FP_number_model_none | |
13562 | && out_attr[Tag_ABI_VFP_args].i == AEABI_VFP_args_compatible)) | |
ee065d83 | 13563 | out_attr[Tag_ABI_VFP_args].i = in_attr[Tag_ABI_VFP_args].i; |
5c294fee TG |
13564 | else if (in_attr[Tag_ABI_FP_number_model].i != AEABI_FP_number_model_none |
13565 | && in_attr[Tag_ABI_VFP_args].i != AEABI_VFP_args_compatible) | |
ee065d83 PB |
13566 | { |
13567 | _bfd_error_handler | |
3895f852 | 13568 | (_("error: %B uses VFP register arguments, %B does not"), |
deddc40b NS |
13569 | in_attr[Tag_ABI_VFP_args].i ? ibfd : obfd, |
13570 | in_attr[Tag_ABI_VFP_args].i ? obfd : ibfd); | |
91e22acd | 13571 | result = FALSE; |
ee065d83 PB |
13572 | } |
13573 | } | |
13574 | ||
3de4a297 | 13575 | for (i = LEAST_KNOWN_OBJ_ATTRIBUTE; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++) |
ee065d83 PB |
13576 | { |
13577 | /* Merge this attribute with existing attributes. */ | |
13578 | switch (i) | |
13579 | { | |
13580 | case Tag_CPU_raw_name: | |
13581 | case Tag_CPU_name: | |
6a631e86 | 13582 | /* These are merged after Tag_CPU_arch. */ |
ee065d83 PB |
13583 | break; |
13584 | ||
13585 | case Tag_ABI_optimization_goals: | |
13586 | case Tag_ABI_FP_optimization_goals: | |
13587 | /* Use the first value seen. */ | |
13588 | break; | |
13589 | ||
13590 | case Tag_CPU_arch: | |
91e22acd AS |
13591 | { |
13592 | int secondary_compat = -1, secondary_compat_out = -1; | |
13593 | unsigned int saved_out_attr = out_attr[i].i; | |
70e99720 TG |
13594 | int arch_attr; |
13595 | static const char *name_table[] = | |
13596 | { | |
91e22acd AS |
13597 | /* These aren't real CPU names, but we can't guess |
13598 | that from the architecture version alone. */ | |
13599 | "Pre v4", | |
13600 | "ARM v4", | |
13601 | "ARM v4T", | |
13602 | "ARM v5T", | |
13603 | "ARM v5TE", | |
13604 | "ARM v5TEJ", | |
13605 | "ARM v6", | |
13606 | "ARM v6KZ", | |
13607 | "ARM v6T2", | |
13608 | "ARM v6K", | |
13609 | "ARM v7", | |
13610 | "ARM v6-M", | |
bca38921 | 13611 | "ARM v6S-M", |
2fd158eb TP |
13612 | "ARM v8", |
13613 | "", | |
13614 | "ARM v8-M.baseline", | |
13615 | "ARM v8-M.mainline", | |
91e22acd AS |
13616 | }; |
13617 | ||
13618 | /* Merge Tag_CPU_arch and Tag_also_compatible_with. */ | |
13619 | secondary_compat = get_secondary_compatible_arch (ibfd); | |
13620 | secondary_compat_out = get_secondary_compatible_arch (obfd); | |
70e99720 TG |
13621 | arch_attr = tag_cpu_arch_combine (ibfd, out_attr[i].i, |
13622 | &secondary_compat_out, | |
13623 | in_attr[i].i, | |
13624 | secondary_compat); | |
13625 | ||
13626 | /* Return with error if failed to merge. */ | |
13627 | if (arch_attr == -1) | |
13628 | return FALSE; | |
13629 | ||
13630 | out_attr[i].i = arch_attr; | |
13631 | ||
91e22acd AS |
13632 | set_secondary_compatible_arch (obfd, secondary_compat_out); |
13633 | ||
13634 | /* Merge Tag_CPU_name and Tag_CPU_raw_name. */ | |
13635 | if (out_attr[i].i == saved_out_attr) | |
13636 | ; /* Leave the names alone. */ | |
13637 | else if (out_attr[i].i == in_attr[i].i) | |
13638 | { | |
13639 | /* The output architecture has been changed to match the | |
13640 | input architecture. Use the input names. */ | |
13641 | out_attr[Tag_CPU_name].s = in_attr[Tag_CPU_name].s | |
13642 | ? _bfd_elf_attr_strdup (obfd, in_attr[Tag_CPU_name].s) | |
13643 | : NULL; | |
13644 | out_attr[Tag_CPU_raw_name].s = in_attr[Tag_CPU_raw_name].s | |
13645 | ? _bfd_elf_attr_strdup (obfd, in_attr[Tag_CPU_raw_name].s) | |
13646 | : NULL; | |
13647 | } | |
13648 | else | |
13649 | { | |
13650 | out_attr[Tag_CPU_name].s = NULL; | |
13651 | out_attr[Tag_CPU_raw_name].s = NULL; | |
13652 | } | |
13653 | ||
13654 | /* If we still don't have a value for Tag_CPU_name, | |
13655 | make one up now. Tag_CPU_raw_name remains blank. */ | |
13656 | if (out_attr[Tag_CPU_name].s == NULL | |
13657 | && out_attr[i].i < ARRAY_SIZE (name_table)) | |
13658 | out_attr[Tag_CPU_name].s = | |
13659 | _bfd_elf_attr_strdup (obfd, name_table[out_attr[i].i]); | |
13660 | } | |
13661 | break; | |
13662 | ||
ee065d83 PB |
13663 | case Tag_ARM_ISA_use: |
13664 | case Tag_THUMB_ISA_use: | |
ee065d83 | 13665 | case Tag_WMMX_arch: |
91e22acd AS |
13666 | case Tag_Advanced_SIMD_arch: |
13667 | /* ??? Do Advanced_SIMD (NEON) and WMMX conflict? */ | |
ee065d83 | 13668 | case Tag_ABI_FP_rounding: |
ee065d83 PB |
13669 | case Tag_ABI_FP_exceptions: |
13670 | case Tag_ABI_FP_user_exceptions: | |
13671 | case Tag_ABI_FP_number_model: | |
75375b3e | 13672 | case Tag_FP_HP_extension: |
91e22acd AS |
13673 | case Tag_CPU_unaligned_access: |
13674 | case Tag_T2EE_use: | |
91e22acd | 13675 | case Tag_MPextension_use: |
ee065d83 PB |
13676 | /* Use the largest value specified. */ |
13677 | if (in_attr[i].i > out_attr[i].i) | |
13678 | out_attr[i].i = in_attr[i].i; | |
13679 | break; | |
13680 | ||
75375b3e | 13681 | case Tag_ABI_align_preserved: |
91e22acd AS |
13682 | case Tag_ABI_PCS_RO_data: |
13683 | /* Use the smallest value specified. */ | |
13684 | if (in_attr[i].i < out_attr[i].i) | |
13685 | out_attr[i].i = in_attr[i].i; | |
13686 | break; | |
13687 | ||
75375b3e | 13688 | case Tag_ABI_align_needed: |
91e22acd | 13689 | if ((in_attr[i].i > 0 || out_attr[i].i > 0) |
75375b3e MGD |
13690 | && (in_attr[Tag_ABI_align_preserved].i == 0 |
13691 | || out_attr[Tag_ABI_align_preserved].i == 0)) | |
ee065d83 | 13692 | { |
91e22acd AS |
13693 | /* This error message should be enabled once all non-conformant |
13694 | binaries in the toolchain have had the attributes set | |
13695 | properly. | |
ee065d83 | 13696 | _bfd_error_handler |
3895f852 | 13697 | (_("error: %B: 8-byte data alignment conflicts with %B"), |
91e22acd AS |
13698 | obfd, ibfd); |
13699 | result = FALSE; */ | |
ee065d83 | 13700 | } |
91e22acd AS |
13701 | /* Fall through. */ |
13702 | case Tag_ABI_FP_denormal: | |
13703 | case Tag_ABI_PCS_GOT_use: | |
13704 | /* Use the "greatest" from the sequence 0, 2, 1, or the largest | |
13705 | value if greater than 2 (for future-proofing). */ | |
13706 | if ((in_attr[i].i > 2 && in_attr[i].i > out_attr[i].i) | |
13707 | || (in_attr[i].i <= 2 && out_attr[i].i <= 2 | |
13708 | && order_021[in_attr[i].i] > order_021[out_attr[i].i])) | |
ee065d83 PB |
13709 | out_attr[i].i = in_attr[i].i; |
13710 | break; | |
91e22acd | 13711 | |
75375b3e MGD |
13712 | case Tag_Virtualization_use: |
13713 | /* The virtualization tag effectively stores two bits of | |
13714 | information: the intended use of TrustZone (in bit 0), and the | |
13715 | intended use of Virtualization (in bit 1). */ | |
13716 | if (out_attr[i].i == 0) | |
13717 | out_attr[i].i = in_attr[i].i; | |
13718 | else if (in_attr[i].i != 0 | |
13719 | && in_attr[i].i != out_attr[i].i) | |
13720 | { | |
13721 | if (in_attr[i].i <= 3 && out_attr[i].i <= 3) | |
13722 | out_attr[i].i = 3; | |
13723 | else | |
13724 | { | |
13725 | _bfd_error_handler | |
13726 | (_("error: %B: unable to merge virtualization attributes " | |
13727 | "with %B"), | |
13728 | obfd, ibfd); | |
13729 | result = FALSE; | |
13730 | } | |
13731 | } | |
13732 | break; | |
91e22acd AS |
13733 | |
13734 | case Tag_CPU_arch_profile: | |
13735 | if (out_attr[i].i != in_attr[i].i) | |
13736 | { | |
13737 | /* 0 will merge with anything. | |
13738 | 'A' and 'S' merge to 'A'. | |
13739 | 'R' and 'S' merge to 'R'. | |
99059e56 | 13740 | 'M' and 'A|R|S' is an error. */ |
91e22acd AS |
13741 | if (out_attr[i].i == 0 |
13742 | || (out_attr[i].i == 'S' | |
13743 | && (in_attr[i].i == 'A' || in_attr[i].i == 'R'))) | |
13744 | out_attr[i].i = in_attr[i].i; | |
13745 | else if (in_attr[i].i == 0 | |
13746 | || (in_attr[i].i == 'S' | |
13747 | && (out_attr[i].i == 'A' || out_attr[i].i == 'R'))) | |
6a631e86 | 13748 | ; /* Do nothing. */ |
91e22acd AS |
13749 | else |
13750 | { | |
13751 | _bfd_error_handler | |
3895f852 | 13752 | (_("error: %B: Conflicting architecture profiles %c/%c"), |
91e22acd AS |
13753 | ibfd, |
13754 | in_attr[i].i ? in_attr[i].i : '0', | |
13755 | out_attr[i].i ? out_attr[i].i : '0'); | |
13756 | result = FALSE; | |
13757 | } | |
13758 | } | |
13759 | break; | |
15afaa63 TP |
13760 | |
13761 | case Tag_DSP_extension: | |
13762 | /* No need to change output value if any of: | |
13763 | - pre (<=) ARMv5T input architecture (do not have DSP) | |
13764 | - M input profile not ARMv7E-M and do not have DSP. */ | |
13765 | if (in_attr[Tag_CPU_arch].i <= 3 | |
13766 | || (in_attr[Tag_CPU_arch_profile].i == 'M' | |
13767 | && in_attr[Tag_CPU_arch].i != 13 | |
13768 | && in_attr[i].i == 0)) | |
13769 | ; /* Do nothing. */ | |
13770 | /* Output value should be 0 if DSP part of architecture, ie. | |
13771 | - post (>=) ARMv5te architecture output | |
13772 | - A, R or S profile output or ARMv7E-M output architecture. */ | |
13773 | else if (out_attr[Tag_CPU_arch].i >= 4 | |
13774 | && (out_attr[Tag_CPU_arch_profile].i == 'A' | |
13775 | || out_attr[Tag_CPU_arch_profile].i == 'R' | |
13776 | || out_attr[Tag_CPU_arch_profile].i == 'S' | |
13777 | || out_attr[Tag_CPU_arch].i == 13)) | |
13778 | out_attr[i].i = 0; | |
13779 | /* Otherwise, DSP instructions are added and not part of output | |
13780 | architecture. */ | |
13781 | else | |
13782 | out_attr[i].i = 1; | |
13783 | break; | |
13784 | ||
75375b3e | 13785 | case Tag_FP_arch: |
62f3b8c8 | 13786 | { |
4547cb56 NC |
13787 | /* Tag_ABI_HardFP_use is handled along with Tag_FP_arch since |
13788 | the meaning of Tag_ABI_HardFP_use depends on Tag_FP_arch | |
13789 | when it's 0. It might mean absence of FP hardware if | |
99654aaf | 13790 | Tag_FP_arch is zero. */ |
4547cb56 | 13791 | |
a715796b | 13792 | #define VFP_VERSION_COUNT 9 |
62f3b8c8 PB |
13793 | static const struct |
13794 | { | |
13795 | int ver; | |
13796 | int regs; | |
bca38921 | 13797 | } vfp_versions[VFP_VERSION_COUNT] = |
62f3b8c8 PB |
13798 | { |
13799 | {0, 0}, | |
13800 | {1, 16}, | |
13801 | {2, 16}, | |
13802 | {3, 32}, | |
13803 | {3, 16}, | |
13804 | {4, 32}, | |
bca38921 | 13805 | {4, 16}, |
a715796b TG |
13806 | {8, 32}, |
13807 | {8, 16} | |
62f3b8c8 PB |
13808 | }; |
13809 | int ver; | |
13810 | int regs; | |
13811 | int newval; | |
13812 | ||
4547cb56 NC |
13813 | /* If the output has no requirement about FP hardware, |
13814 | follow the requirement of the input. */ | |
13815 | if (out_attr[i].i == 0) | |
13816 | { | |
13817 | BFD_ASSERT (out_attr[Tag_ABI_HardFP_use].i == 0); | |
13818 | out_attr[i].i = in_attr[i].i; | |
13819 | out_attr[Tag_ABI_HardFP_use].i | |
13820 | = in_attr[Tag_ABI_HardFP_use].i; | |
13821 | break; | |
13822 | } | |
13823 | /* If the input has no requirement about FP hardware, do | |
13824 | nothing. */ | |
13825 | else if (in_attr[i].i == 0) | |
13826 | { | |
13827 | BFD_ASSERT (in_attr[Tag_ABI_HardFP_use].i == 0); | |
13828 | break; | |
13829 | } | |
13830 | ||
13831 | /* Both the input and the output have nonzero Tag_FP_arch. | |
99654aaf | 13832 | So Tag_ABI_HardFP_use is implied by Tag_FP_arch when it's zero. */ |
4547cb56 NC |
13833 | |
13834 | /* If both the input and the output have zero Tag_ABI_HardFP_use, | |
13835 | do nothing. */ | |
13836 | if (in_attr[Tag_ABI_HardFP_use].i == 0 | |
13837 | && out_attr[Tag_ABI_HardFP_use].i == 0) | |
13838 | ; | |
13839 | /* If the input and the output have different Tag_ABI_HardFP_use, | |
99654aaf | 13840 | the combination of them is 0 (implied by Tag_FP_arch). */ |
4547cb56 NC |
13841 | else if (in_attr[Tag_ABI_HardFP_use].i |
13842 | != out_attr[Tag_ABI_HardFP_use].i) | |
99654aaf | 13843 | out_attr[Tag_ABI_HardFP_use].i = 0; |
4547cb56 NC |
13844 | |
13845 | /* Now we can handle Tag_FP_arch. */ | |
13846 | ||
bca38921 MGD |
13847 | /* Values of VFP_VERSION_COUNT or more aren't defined, so just |
13848 | pick the biggest. */ | |
13849 | if (in_attr[i].i >= VFP_VERSION_COUNT | |
13850 | && in_attr[i].i > out_attr[i].i) | |
62f3b8c8 PB |
13851 | { |
13852 | out_attr[i] = in_attr[i]; | |
13853 | break; | |
13854 | } | |
13855 | /* The output uses the superset of input features | |
13856 | (ISA version) and registers. */ | |
13857 | ver = vfp_versions[in_attr[i].i].ver; | |
13858 | if (ver < vfp_versions[out_attr[i].i].ver) | |
13859 | ver = vfp_versions[out_attr[i].i].ver; | |
13860 | regs = vfp_versions[in_attr[i].i].regs; | |
13861 | if (regs < vfp_versions[out_attr[i].i].regs) | |
13862 | regs = vfp_versions[out_attr[i].i].regs; | |
13863 | /* This assumes all possible supersets are also a valid | |
99059e56 | 13864 | options. */ |
bca38921 | 13865 | for (newval = VFP_VERSION_COUNT - 1; newval > 0; newval--) |
62f3b8c8 PB |
13866 | { |
13867 | if (regs == vfp_versions[newval].regs | |
13868 | && ver == vfp_versions[newval].ver) | |
13869 | break; | |
13870 | } | |
13871 | out_attr[i].i = newval; | |
13872 | } | |
b1cc4aeb | 13873 | break; |
ee065d83 PB |
13874 | case Tag_PCS_config: |
13875 | if (out_attr[i].i == 0) | |
13876 | out_attr[i].i = in_attr[i].i; | |
b6009aca | 13877 | else if (in_attr[i].i != 0 && out_attr[i].i != in_attr[i].i) |
ee065d83 PB |
13878 | { |
13879 | /* It's sometimes ok to mix different configs, so this is only | |
99059e56 | 13880 | a warning. */ |
ee065d83 PB |
13881 | _bfd_error_handler |
13882 | (_("Warning: %B: Conflicting platform configuration"), ibfd); | |
13883 | } | |
13884 | break; | |
13885 | case Tag_ABI_PCS_R9_use: | |
004ae526 PB |
13886 | if (in_attr[i].i != out_attr[i].i |
13887 | && out_attr[i].i != AEABI_R9_unused | |
ee065d83 PB |
13888 | && in_attr[i].i != AEABI_R9_unused) |
13889 | { | |
13890 | _bfd_error_handler | |
3895f852 | 13891 | (_("error: %B: Conflicting use of R9"), ibfd); |
91e22acd | 13892 | result = FALSE; |
ee065d83 PB |
13893 | } |
13894 | if (out_attr[i].i == AEABI_R9_unused) | |
13895 | out_attr[i].i = in_attr[i].i; | |
13896 | break; | |
13897 | case Tag_ABI_PCS_RW_data: | |
13898 | if (in_attr[i].i == AEABI_PCS_RW_data_SBrel | |
13899 | && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_SB | |
13900 | && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_unused) | |
13901 | { | |
13902 | _bfd_error_handler | |
3895f852 | 13903 | (_("error: %B: SB relative addressing conflicts with use of R9"), |
ee065d83 | 13904 | ibfd); |
91e22acd | 13905 | result = FALSE; |
ee065d83 PB |
13906 | } |
13907 | /* Use the smallest value specified. */ | |
13908 | if (in_attr[i].i < out_attr[i].i) | |
13909 | out_attr[i].i = in_attr[i].i; | |
13910 | break; | |
ee065d83 | 13911 | case Tag_ABI_PCS_wchar_t: |
a9dc9481 JM |
13912 | if (out_attr[i].i && in_attr[i].i && out_attr[i].i != in_attr[i].i |
13913 | && !elf_arm_tdata (obfd)->no_wchar_size_warning) | |
ee065d83 PB |
13914 | { |
13915 | _bfd_error_handler | |
a9dc9481 JM |
13916 | (_("warning: %B uses %u-byte wchar_t yet the output is to use %u-byte wchar_t; use of wchar_t values across objects may fail"), |
13917 | ibfd, in_attr[i].i, out_attr[i].i); | |
ee065d83 | 13918 | } |
a9dc9481 | 13919 | else if (in_attr[i].i && !out_attr[i].i) |
ee065d83 PB |
13920 | out_attr[i].i = in_attr[i].i; |
13921 | break; | |
ee065d83 PB |
13922 | case Tag_ABI_enum_size: |
13923 | if (in_attr[i].i != AEABI_enum_unused) | |
13924 | { | |
13925 | if (out_attr[i].i == AEABI_enum_unused | |
13926 | || out_attr[i].i == AEABI_enum_forced_wide) | |
13927 | { | |
13928 | /* The existing object is compatible with anything. | |
13929 | Use whatever requirements the new object has. */ | |
13930 | out_attr[i].i = in_attr[i].i; | |
13931 | } | |
13932 | else if (in_attr[i].i != AEABI_enum_forced_wide | |
bf21ed78 | 13933 | && out_attr[i].i != in_attr[i].i |
0ffa91dd | 13934 | && !elf_arm_tdata (obfd)->no_enum_size_warning) |
ee065d83 | 13935 | { |
91e22acd | 13936 | static const char *aeabi_enum_names[] = |
bf21ed78 | 13937 | { "", "variable-size", "32-bit", "" }; |
91e22acd AS |
13938 | const char *in_name = |
13939 | in_attr[i].i < ARRAY_SIZE(aeabi_enum_names) | |
13940 | ? aeabi_enum_names[in_attr[i].i] | |
13941 | : "<unknown>"; | |
13942 | const char *out_name = | |
13943 | out_attr[i].i < ARRAY_SIZE(aeabi_enum_names) | |
13944 | ? aeabi_enum_names[out_attr[i].i] | |
13945 | : "<unknown>"; | |
ee065d83 | 13946 | _bfd_error_handler |
bf21ed78 | 13947 | (_("warning: %B uses %s enums yet the output is to use %s enums; use of enum values across objects may fail"), |
91e22acd | 13948 | ibfd, in_name, out_name); |
ee065d83 PB |
13949 | } |
13950 | } | |
13951 | break; | |
13952 | case Tag_ABI_VFP_args: | |
13953 | /* Aready done. */ | |
13954 | break; | |
13955 | case Tag_ABI_WMMX_args: | |
13956 | if (in_attr[i].i != out_attr[i].i) | |
13957 | { | |
13958 | _bfd_error_handler | |
3895f852 | 13959 | (_("error: %B uses iWMMXt register arguments, %B does not"), |
ee065d83 | 13960 | ibfd, obfd); |
91e22acd | 13961 | result = FALSE; |
ee065d83 PB |
13962 | } |
13963 | break; | |
7b86a9fa AS |
13964 | case Tag_compatibility: |
13965 | /* Merged in target-independent code. */ | |
13966 | break; | |
91e22acd | 13967 | case Tag_ABI_HardFP_use: |
4547cb56 | 13968 | /* This is handled along with Tag_FP_arch. */ |
91e22acd AS |
13969 | break; |
13970 | case Tag_ABI_FP_16bit_format: | |
13971 | if (in_attr[i].i != 0 && out_attr[i].i != 0) | |
13972 | { | |
13973 | if (in_attr[i].i != out_attr[i].i) | |
13974 | { | |
13975 | _bfd_error_handler | |
3895f852 | 13976 | (_("error: fp16 format mismatch between %B and %B"), |
91e22acd AS |
13977 | ibfd, obfd); |
13978 | result = FALSE; | |
13979 | } | |
13980 | } | |
13981 | if (in_attr[i].i != 0) | |
13982 | out_attr[i].i = in_attr[i].i; | |
13983 | break; | |
7b86a9fa | 13984 | |
cd21e546 | 13985 | case Tag_DIV_use: |
ac56ee8f MGD |
13986 | /* A value of zero on input means that the divide instruction may |
13987 | be used if available in the base architecture as specified via | |
13988 | Tag_CPU_arch and Tag_CPU_arch_profile. A value of 1 means that | |
13989 | the user did not want divide instructions. A value of 2 | |
13990 | explicitly means that divide instructions were allowed in ARM | |
13991 | and Thumb state. */ | |
13992 | if (in_attr[i].i == out_attr[i].i) | |
13993 | /* Do nothing. */ ; | |
13994 | else if (elf32_arm_attributes_forbid_div (in_attr) | |
13995 | && !elf32_arm_attributes_accept_div (out_attr)) | |
13996 | out_attr[i].i = 1; | |
13997 | else if (elf32_arm_attributes_forbid_div (out_attr) | |
13998 | && elf32_arm_attributes_accept_div (in_attr)) | |
13999 | out_attr[i].i = in_attr[i].i; | |
14000 | else if (in_attr[i].i == 2) | |
14001 | out_attr[i].i = in_attr[i].i; | |
cd21e546 MGD |
14002 | break; |
14003 | ||
14004 | case Tag_MPextension_use_legacy: | |
14005 | /* We don't output objects with Tag_MPextension_use_legacy - we | |
14006 | move the value to Tag_MPextension_use. */ | |
14007 | if (in_attr[i].i != 0 && in_attr[Tag_MPextension_use].i != 0) | |
14008 | { | |
14009 | if (in_attr[Tag_MPextension_use].i != in_attr[i].i) | |
14010 | { | |
14011 | _bfd_error_handler | |
14012 | (_("%B has has both the current and legacy " | |
b38cadfb | 14013 | "Tag_MPextension_use attributes"), |
cd21e546 MGD |
14014 | ibfd); |
14015 | result = FALSE; | |
14016 | } | |
14017 | } | |
14018 | ||
14019 | if (in_attr[i].i > out_attr[Tag_MPextension_use].i) | |
14020 | out_attr[Tag_MPextension_use] = in_attr[i]; | |
14021 | ||
14022 | break; | |
14023 | ||
91e22acd | 14024 | case Tag_nodefaults: |
2d0bb761 AS |
14025 | /* This tag is set if it exists, but the value is unused (and is |
14026 | typically zero). We don't actually need to do anything here - | |
14027 | the merge happens automatically when the type flags are merged | |
14028 | below. */ | |
91e22acd AS |
14029 | break; |
14030 | case Tag_also_compatible_with: | |
14031 | /* Already done in Tag_CPU_arch. */ | |
14032 | break; | |
14033 | case Tag_conformance: | |
14034 | /* Keep the attribute if it matches. Throw it away otherwise. | |
14035 | No attribute means no claim to conform. */ | |
14036 | if (!in_attr[i].s || !out_attr[i].s | |
14037 | || strcmp (in_attr[i].s, out_attr[i].s) != 0) | |
14038 | out_attr[i].s = NULL; | |
14039 | break; | |
3cfad14c | 14040 | |
91e22acd | 14041 | default: |
e8b36cd1 JM |
14042 | result |
14043 | = result && _bfd_elf_merge_unknown_attribute_low (ibfd, obfd, i); | |
91e22acd AS |
14044 | } |
14045 | ||
14046 | /* If out_attr was copied from in_attr then it won't have a type yet. */ | |
14047 | if (in_attr[i].type && !out_attr[i].type) | |
14048 | out_attr[i].type = in_attr[i].type; | |
ee065d83 PB |
14049 | } |
14050 | ||
104d59d1 | 14051 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
5488d830 MGD |
14052 | if (!_bfd_elf_merge_object_attributes (ibfd, obfd)) |
14053 | return FALSE; | |
ee065d83 | 14054 | |
104d59d1 | 14055 | /* Check for any attributes not known on ARM. */ |
e8b36cd1 | 14056 | result &= _bfd_elf_merge_unknown_attribute_list (ibfd, obfd); |
91e22acd | 14057 | |
91e22acd | 14058 | return result; |
252b5132 RH |
14059 | } |
14060 | ||
3a4a14e9 PB |
14061 | |
14062 | /* Return TRUE if the two EABI versions are incompatible. */ | |
14063 | ||
14064 | static bfd_boolean | |
14065 | elf32_arm_versions_compatible (unsigned iver, unsigned over) | |
14066 | { | |
14067 | /* v4 and v5 are the same spec before and after it was released, | |
14068 | so allow mixing them. */ | |
14069 | if ((iver == EF_ARM_EABI_VER4 && over == EF_ARM_EABI_VER5) | |
14070 | || (iver == EF_ARM_EABI_VER5 && over == EF_ARM_EABI_VER4)) | |
14071 | return TRUE; | |
14072 | ||
14073 | return (iver == over); | |
14074 | } | |
14075 | ||
252b5132 RH |
14076 | /* Merge backend specific data from an object file to the output |
14077 | object file when linking. */ | |
9b485d32 | 14078 | |
b34976b6 | 14079 | static bfd_boolean |
21d799b5 | 14080 | elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd); |
252b5132 | 14081 | |
9b485d32 NC |
14082 | /* Display the flags field. */ |
14083 | ||
b34976b6 | 14084 | static bfd_boolean |
57e8b36a | 14085 | elf32_arm_print_private_bfd_data (bfd *abfd, void * ptr) |
252b5132 | 14086 | { |
fc830a83 NC |
14087 | FILE * file = (FILE *) ptr; |
14088 | unsigned long flags; | |
252b5132 RH |
14089 | |
14090 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
14091 | ||
14092 | /* Print normal ELF private data. */ | |
14093 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
14094 | ||
fc830a83 | 14095 | flags = elf_elfheader (abfd)->e_flags; |
9b485d32 NC |
14096 | /* Ignore init flag - it may not be set, despite the flags field |
14097 | containing valid data. */ | |
252b5132 RH |
14098 | |
14099 | /* xgettext:c-format */ | |
9b485d32 | 14100 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); |
252b5132 | 14101 | |
fc830a83 NC |
14102 | switch (EF_ARM_EABI_VERSION (flags)) |
14103 | { | |
14104 | case EF_ARM_EABI_UNKNOWN: | |
4cc11e76 | 14105 | /* The following flag bits are GNU extensions and not part of the |
fc830a83 NC |
14106 | official ARM ELF extended ABI. Hence they are only decoded if |
14107 | the EABI version is not set. */ | |
fd2ec330 | 14108 | if (flags & EF_ARM_INTERWORK) |
9b485d32 | 14109 | fprintf (file, _(" [interworking enabled]")); |
9a5aca8c | 14110 | |
fd2ec330 | 14111 | if (flags & EF_ARM_APCS_26) |
6c571f00 | 14112 | fprintf (file, " [APCS-26]"); |
fc830a83 | 14113 | else |
6c571f00 | 14114 | fprintf (file, " [APCS-32]"); |
9a5aca8c | 14115 | |
96a846ea RE |
14116 | if (flags & EF_ARM_VFP_FLOAT) |
14117 | fprintf (file, _(" [VFP float format]")); | |
fde78edd NC |
14118 | else if (flags & EF_ARM_MAVERICK_FLOAT) |
14119 | fprintf (file, _(" [Maverick float format]")); | |
96a846ea RE |
14120 | else |
14121 | fprintf (file, _(" [FPA float format]")); | |
14122 | ||
fd2ec330 | 14123 | if (flags & EF_ARM_APCS_FLOAT) |
9b485d32 | 14124 | fprintf (file, _(" [floats passed in float registers]")); |
9a5aca8c | 14125 | |
fd2ec330 | 14126 | if (flags & EF_ARM_PIC) |
9b485d32 | 14127 | fprintf (file, _(" [position independent]")); |
fc830a83 | 14128 | |
fd2ec330 | 14129 | if (flags & EF_ARM_NEW_ABI) |
9b485d32 | 14130 | fprintf (file, _(" [new ABI]")); |
9a5aca8c | 14131 | |
fd2ec330 | 14132 | if (flags & EF_ARM_OLD_ABI) |
9b485d32 | 14133 | fprintf (file, _(" [old ABI]")); |
9a5aca8c | 14134 | |
fd2ec330 | 14135 | if (flags & EF_ARM_SOFT_FLOAT) |
9b485d32 | 14136 | fprintf (file, _(" [software FP]")); |
9a5aca8c | 14137 | |
96a846ea RE |
14138 | flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT |
14139 | | EF_ARM_PIC | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI | |
fde78edd NC |
14140 | | EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT |
14141 | | EF_ARM_MAVERICK_FLOAT); | |
fc830a83 | 14142 | break; |
9a5aca8c | 14143 | |
fc830a83 | 14144 | case EF_ARM_EABI_VER1: |
9b485d32 | 14145 | fprintf (file, _(" [Version1 EABI]")); |
9a5aca8c | 14146 | |
fc830a83 | 14147 | if (flags & EF_ARM_SYMSARESORTED) |
9b485d32 | 14148 | fprintf (file, _(" [sorted symbol table]")); |
fc830a83 | 14149 | else |
9b485d32 | 14150 | fprintf (file, _(" [unsorted symbol table]")); |
9a5aca8c | 14151 | |
fc830a83 NC |
14152 | flags &= ~ EF_ARM_SYMSARESORTED; |
14153 | break; | |
9a5aca8c | 14154 | |
fd2ec330 PB |
14155 | case EF_ARM_EABI_VER2: |
14156 | fprintf (file, _(" [Version2 EABI]")); | |
14157 | ||
14158 | if (flags & EF_ARM_SYMSARESORTED) | |
14159 | fprintf (file, _(" [sorted symbol table]")); | |
14160 | else | |
14161 | fprintf (file, _(" [unsorted symbol table]")); | |
14162 | ||
14163 | if (flags & EF_ARM_DYNSYMSUSESEGIDX) | |
14164 | fprintf (file, _(" [dynamic symbols use segment index]")); | |
14165 | ||
14166 | if (flags & EF_ARM_MAPSYMSFIRST) | |
14167 | fprintf (file, _(" [mapping symbols precede others]")); | |
14168 | ||
99e4ae17 | 14169 | flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX |
fd2ec330 PB |
14170 | | EF_ARM_MAPSYMSFIRST); |
14171 | break; | |
14172 | ||
d507cf36 PB |
14173 | case EF_ARM_EABI_VER3: |
14174 | fprintf (file, _(" [Version3 EABI]")); | |
8cb51566 PB |
14175 | break; |
14176 | ||
14177 | case EF_ARM_EABI_VER4: | |
14178 | fprintf (file, _(" [Version4 EABI]")); | |
3a4a14e9 | 14179 | goto eabi; |
d507cf36 | 14180 | |
3a4a14e9 PB |
14181 | case EF_ARM_EABI_VER5: |
14182 | fprintf (file, _(" [Version5 EABI]")); | |
3bfcb652 NC |
14183 | |
14184 | if (flags & EF_ARM_ABI_FLOAT_SOFT) | |
14185 | fprintf (file, _(" [soft-float ABI]")); | |
14186 | ||
14187 | if (flags & EF_ARM_ABI_FLOAT_HARD) | |
14188 | fprintf (file, _(" [hard-float ABI]")); | |
14189 | ||
14190 | flags &= ~(EF_ARM_ABI_FLOAT_SOFT | EF_ARM_ABI_FLOAT_HARD); | |
14191 | ||
3a4a14e9 | 14192 | eabi: |
d507cf36 PB |
14193 | if (flags & EF_ARM_BE8) |
14194 | fprintf (file, _(" [BE8]")); | |
14195 | ||
14196 | if (flags & EF_ARM_LE8) | |
14197 | fprintf (file, _(" [LE8]")); | |
14198 | ||
14199 | flags &= ~(EF_ARM_LE8 | EF_ARM_BE8); | |
14200 | break; | |
14201 | ||
fc830a83 | 14202 | default: |
9b485d32 | 14203 | fprintf (file, _(" <EABI version unrecognised>")); |
fc830a83 NC |
14204 | break; |
14205 | } | |
252b5132 | 14206 | |
fc830a83 | 14207 | flags &= ~ EF_ARM_EABIMASK; |
252b5132 | 14208 | |
fc830a83 | 14209 | if (flags & EF_ARM_RELEXEC) |
9b485d32 | 14210 | fprintf (file, _(" [relocatable executable]")); |
252b5132 | 14211 | |
a5721edd | 14212 | flags &= ~EF_ARM_RELEXEC; |
fc830a83 NC |
14213 | |
14214 | if (flags) | |
9b485d32 | 14215 | fprintf (file, _("<Unrecognised flag bits set>")); |
9a5aca8c | 14216 | |
252b5132 RH |
14217 | fputc ('\n', file); |
14218 | ||
b34976b6 | 14219 | return TRUE; |
252b5132 RH |
14220 | } |
14221 | ||
14222 | static int | |
57e8b36a | 14223 | elf32_arm_get_symbol_type (Elf_Internal_Sym * elf_sym, int type) |
252b5132 | 14224 | { |
2f0ca46a NC |
14225 | switch (ELF_ST_TYPE (elf_sym->st_info)) |
14226 | { | |
14227 | case STT_ARM_TFUNC: | |
14228 | return ELF_ST_TYPE (elf_sym->st_info); | |
ce855c42 | 14229 | |
2f0ca46a NC |
14230 | case STT_ARM_16BIT: |
14231 | /* If the symbol is not an object, return the STT_ARM_16BIT flag. | |
14232 | This allows us to distinguish between data used by Thumb instructions | |
14233 | and non-data (which is probably code) inside Thumb regions of an | |
14234 | executable. */ | |
1a0eb693 | 14235 | if (type != STT_OBJECT && type != STT_TLS) |
2f0ca46a NC |
14236 | return ELF_ST_TYPE (elf_sym->st_info); |
14237 | break; | |
9a5aca8c | 14238 | |
ce855c42 NC |
14239 | default: |
14240 | break; | |
2f0ca46a NC |
14241 | } |
14242 | ||
14243 | return type; | |
252b5132 | 14244 | } |
f21f3fe0 | 14245 | |
252b5132 | 14246 | static asection * |
07adf181 AM |
14247 | elf32_arm_gc_mark_hook (asection *sec, |
14248 | struct bfd_link_info *info, | |
14249 | Elf_Internal_Rela *rel, | |
14250 | struct elf_link_hash_entry *h, | |
14251 | Elf_Internal_Sym *sym) | |
252b5132 RH |
14252 | { |
14253 | if (h != NULL) | |
07adf181 | 14254 | switch (ELF32_R_TYPE (rel->r_info)) |
252b5132 RH |
14255 | { |
14256 | case R_ARM_GNU_VTINHERIT: | |
14257 | case R_ARM_GNU_VTENTRY: | |
07adf181 AM |
14258 | return NULL; |
14259 | } | |
9ad5cbcf | 14260 | |
07adf181 | 14261 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
252b5132 RH |
14262 | } |
14263 | ||
780a67af NC |
14264 | /* Update the got entry reference counts for the section being removed. */ |
14265 | ||
b34976b6 | 14266 | static bfd_boolean |
ba93b8ac DJ |
14267 | elf32_arm_gc_sweep_hook (bfd * abfd, |
14268 | struct bfd_link_info * info, | |
14269 | asection * sec, | |
14270 | const Elf_Internal_Rela * relocs) | |
252b5132 | 14271 | { |
5e681ec4 PB |
14272 | Elf_Internal_Shdr *symtab_hdr; |
14273 | struct elf_link_hash_entry **sym_hashes; | |
14274 | bfd_signed_vma *local_got_refcounts; | |
14275 | const Elf_Internal_Rela *rel, *relend; | |
eb043451 PB |
14276 | struct elf32_arm_link_hash_table * globals; |
14277 | ||
0e1862bb | 14278 | if (bfd_link_relocatable (info)) |
7dda2462 TG |
14279 | return TRUE; |
14280 | ||
eb043451 | 14281 | globals = elf32_arm_hash_table (info); |
4dfe6ac6 NC |
14282 | if (globals == NULL) |
14283 | return FALSE; | |
5e681ec4 PB |
14284 | |
14285 | elf_section_data (sec)->local_dynrel = NULL; | |
14286 | ||
0ffa91dd | 14287 | symtab_hdr = & elf_symtab_hdr (abfd); |
5e681ec4 PB |
14288 | sym_hashes = elf_sym_hashes (abfd); |
14289 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
14290 | ||
906e58ca | 14291 | check_use_blx (globals); |
bd97cb95 | 14292 | |
5e681ec4 PB |
14293 | relend = relocs + sec->reloc_count; |
14294 | for (rel = relocs; rel < relend; rel++) | |
eb043451 | 14295 | { |
3eb128b2 AM |
14296 | unsigned long r_symndx; |
14297 | struct elf_link_hash_entry *h = NULL; | |
f6e32f6d | 14298 | struct elf32_arm_link_hash_entry *eh; |
eb043451 | 14299 | int r_type; |
34e77a92 | 14300 | bfd_boolean call_reloc_p; |
f6e32f6d RS |
14301 | bfd_boolean may_become_dynamic_p; |
14302 | bfd_boolean may_need_local_target_p; | |
34e77a92 RS |
14303 | union gotplt_union *root_plt; |
14304 | struct arm_plt_info *arm_plt; | |
5e681ec4 | 14305 | |
3eb128b2 AM |
14306 | r_symndx = ELF32_R_SYM (rel->r_info); |
14307 | if (r_symndx >= symtab_hdr->sh_info) | |
14308 | { | |
14309 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
14310 | while (h->root.type == bfd_link_hash_indirect | |
14311 | || h->root.type == bfd_link_hash_warning) | |
14312 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
14313 | } | |
f6e32f6d RS |
14314 | eh = (struct elf32_arm_link_hash_entry *) h; |
14315 | ||
34e77a92 | 14316 | call_reloc_p = FALSE; |
f6e32f6d RS |
14317 | may_become_dynamic_p = FALSE; |
14318 | may_need_local_target_p = FALSE; | |
3eb128b2 | 14319 | |
eb043451 | 14320 | r_type = ELF32_R_TYPE (rel->r_info); |
eb043451 | 14321 | r_type = arm_real_reloc_type (globals, r_type); |
eb043451 PB |
14322 | switch (r_type) |
14323 | { | |
14324 | case R_ARM_GOT32: | |
eb043451 | 14325 | case R_ARM_GOT_PREL: |
ba93b8ac DJ |
14326 | case R_ARM_TLS_GD32: |
14327 | case R_ARM_TLS_IE32: | |
3eb128b2 | 14328 | if (h != NULL) |
eb043451 | 14329 | { |
eb043451 PB |
14330 | if (h->got.refcount > 0) |
14331 | h->got.refcount -= 1; | |
14332 | } | |
14333 | else if (local_got_refcounts != NULL) | |
14334 | { | |
14335 | if (local_got_refcounts[r_symndx] > 0) | |
14336 | local_got_refcounts[r_symndx] -= 1; | |
14337 | } | |
14338 | break; | |
14339 | ||
ba93b8ac | 14340 | case R_ARM_TLS_LDM32: |
4dfe6ac6 | 14341 | globals->tls_ldm_got.refcount -= 1; |
ba93b8ac DJ |
14342 | break; |
14343 | ||
eb043451 PB |
14344 | case R_ARM_PC24: |
14345 | case R_ARM_PLT32: | |
5b5bb741 PB |
14346 | case R_ARM_CALL: |
14347 | case R_ARM_JUMP24: | |
eb043451 | 14348 | case R_ARM_PREL31: |
c19d1205 | 14349 | case R_ARM_THM_CALL: |
bd97cb95 DJ |
14350 | case R_ARM_THM_JUMP24: |
14351 | case R_ARM_THM_JUMP19: | |
34e77a92 | 14352 | call_reloc_p = TRUE; |
f6e32f6d RS |
14353 | may_need_local_target_p = TRUE; |
14354 | break; | |
14355 | ||
14356 | case R_ARM_ABS12: | |
14357 | if (!globals->vxworks_p) | |
14358 | { | |
14359 | may_need_local_target_p = TRUE; | |
14360 | break; | |
14361 | } | |
14362 | /* Fall through. */ | |
14363 | case R_ARM_ABS32: | |
14364 | case R_ARM_ABS32_NOI: | |
14365 | case R_ARM_REL32: | |
14366 | case R_ARM_REL32_NOI: | |
b6895b4f PB |
14367 | case R_ARM_MOVW_ABS_NC: |
14368 | case R_ARM_MOVT_ABS: | |
14369 | case R_ARM_MOVW_PREL_NC: | |
14370 | case R_ARM_MOVT_PREL: | |
14371 | case R_ARM_THM_MOVW_ABS_NC: | |
14372 | case R_ARM_THM_MOVT_ABS: | |
14373 | case R_ARM_THM_MOVW_PREL_NC: | |
14374 | case R_ARM_THM_MOVT_PREL: | |
b7693d02 | 14375 | /* Should the interworking branches be here also? */ |
0e1862bb | 14376 | if ((bfd_link_pic (info) || globals->root.is_relocatable_executable) |
34e77a92 RS |
14377 | && (sec->flags & SEC_ALLOC) != 0) |
14378 | { | |
14379 | if (h == NULL | |
469a3493 | 14380 | && elf32_arm_howto_from_type (r_type)->pc_relative) |
34e77a92 RS |
14381 | { |
14382 | call_reloc_p = TRUE; | |
14383 | may_need_local_target_p = TRUE; | |
14384 | } | |
14385 | else | |
14386 | may_become_dynamic_p = TRUE; | |
14387 | } | |
f6e32f6d RS |
14388 | else |
14389 | may_need_local_target_p = TRUE; | |
14390 | break; | |
b7693d02 | 14391 | |
f6e32f6d RS |
14392 | default: |
14393 | break; | |
14394 | } | |
5e681ec4 | 14395 | |
34e77a92 | 14396 | if (may_need_local_target_p |
4ba2ef8f TP |
14397 | && elf32_arm_get_plt_info (abfd, globals, eh, r_symndx, &root_plt, |
14398 | &arm_plt)) | |
f6e32f6d | 14399 | { |
27586251 HPN |
14400 | /* If PLT refcount book-keeping is wrong and too low, we'll |
14401 | see a zero value (going to -1) for the root PLT reference | |
14402 | count. */ | |
14403 | if (root_plt->refcount >= 0) | |
14404 | { | |
14405 | BFD_ASSERT (root_plt->refcount != 0); | |
14406 | root_plt->refcount -= 1; | |
14407 | } | |
14408 | else | |
14409 | /* A value of -1 means the symbol has become local, forced | |
14410 | or seeing a hidden definition. Any other negative value | |
14411 | is an error. */ | |
14412 | BFD_ASSERT (root_plt->refcount == -1); | |
34e77a92 RS |
14413 | |
14414 | if (!call_reloc_p) | |
14415 | arm_plt->noncall_refcount--; | |
5e681ec4 | 14416 | |
f6e32f6d | 14417 | if (r_type == R_ARM_THM_CALL) |
34e77a92 | 14418 | arm_plt->maybe_thumb_refcount--; |
bd97cb95 | 14419 | |
f6e32f6d RS |
14420 | if (r_type == R_ARM_THM_JUMP24 |
14421 | || r_type == R_ARM_THM_JUMP19) | |
34e77a92 | 14422 | arm_plt->thumb_refcount--; |
f6e32f6d | 14423 | } |
5e681ec4 | 14424 | |
34e77a92 | 14425 | if (may_become_dynamic_p) |
f6e32f6d RS |
14426 | { |
14427 | struct elf_dyn_relocs **pp; | |
14428 | struct elf_dyn_relocs *p; | |
5e681ec4 | 14429 | |
34e77a92 | 14430 | if (h != NULL) |
9c489990 | 14431 | pp = &(eh->dyn_relocs); |
34e77a92 RS |
14432 | else |
14433 | { | |
14434 | Elf_Internal_Sym *isym; | |
14435 | ||
14436 | isym = bfd_sym_from_r_symndx (&globals->sym_cache, | |
14437 | abfd, r_symndx); | |
14438 | if (isym == NULL) | |
14439 | return FALSE; | |
14440 | pp = elf32_arm_get_local_dynreloc_list (abfd, r_symndx, isym); | |
14441 | if (pp == NULL) | |
14442 | return FALSE; | |
14443 | } | |
9c489990 | 14444 | for (; (p = *pp) != NULL; pp = &p->next) |
f6e32f6d RS |
14445 | if (p->sec == sec) |
14446 | { | |
14447 | /* Everything must go for SEC. */ | |
14448 | *pp = p->next; | |
14449 | break; | |
14450 | } | |
eb043451 PB |
14451 | } |
14452 | } | |
5e681ec4 | 14453 | |
b34976b6 | 14454 | return TRUE; |
252b5132 RH |
14455 | } |
14456 | ||
780a67af NC |
14457 | /* Look through the relocs for a section during the first phase. */ |
14458 | ||
b34976b6 | 14459 | static bfd_boolean |
57e8b36a NC |
14460 | elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info, |
14461 | asection *sec, const Elf_Internal_Rela *relocs) | |
252b5132 | 14462 | { |
b34976b6 AM |
14463 | Elf_Internal_Shdr *symtab_hdr; |
14464 | struct elf_link_hash_entry **sym_hashes; | |
b34976b6 AM |
14465 | const Elf_Internal_Rela *rel; |
14466 | const Elf_Internal_Rela *rel_end; | |
14467 | bfd *dynobj; | |
5e681ec4 | 14468 | asection *sreloc; |
5e681ec4 | 14469 | struct elf32_arm_link_hash_table *htab; |
f6e32f6d RS |
14470 | bfd_boolean call_reloc_p; |
14471 | bfd_boolean may_become_dynamic_p; | |
14472 | bfd_boolean may_need_local_target_p; | |
ce98a316 | 14473 | unsigned long nsyms; |
9a5aca8c | 14474 | |
0e1862bb | 14475 | if (bfd_link_relocatable (info)) |
b34976b6 | 14476 | return TRUE; |
9a5aca8c | 14477 | |
0ffa91dd NC |
14478 | BFD_ASSERT (is_arm_elf (abfd)); |
14479 | ||
5e681ec4 | 14480 | htab = elf32_arm_hash_table (info); |
4dfe6ac6 NC |
14481 | if (htab == NULL) |
14482 | return FALSE; | |
14483 | ||
5e681ec4 | 14484 | sreloc = NULL; |
9a5aca8c | 14485 | |
67687978 PB |
14486 | /* Create dynamic sections for relocatable executables so that we can |
14487 | copy relocations. */ | |
14488 | if (htab->root.is_relocatable_executable | |
14489 | && ! htab->root.dynamic_sections_created) | |
14490 | { | |
14491 | if (! _bfd_elf_link_create_dynamic_sections (abfd, info)) | |
14492 | return FALSE; | |
14493 | } | |
14494 | ||
cbc704f3 RS |
14495 | if (htab->root.dynobj == NULL) |
14496 | htab->root.dynobj = abfd; | |
34e77a92 RS |
14497 | if (!create_ifunc_sections (info)) |
14498 | return FALSE; | |
cbc704f3 RS |
14499 | |
14500 | dynobj = htab->root.dynobj; | |
14501 | ||
0ffa91dd | 14502 | symtab_hdr = & elf_symtab_hdr (abfd); |
252b5132 | 14503 | sym_hashes = elf_sym_hashes (abfd); |
ce98a316 | 14504 | nsyms = NUM_SHDR_ENTRIES (symtab_hdr); |
b38cadfb | 14505 | |
252b5132 RH |
14506 | rel_end = relocs + sec->reloc_count; |
14507 | for (rel = relocs; rel < rel_end; rel++) | |
14508 | { | |
34e77a92 | 14509 | Elf_Internal_Sym *isym; |
252b5132 | 14510 | struct elf_link_hash_entry *h; |
b7693d02 | 14511 | struct elf32_arm_link_hash_entry *eh; |
252b5132 | 14512 | unsigned long r_symndx; |
eb043451 | 14513 | int r_type; |
9a5aca8c | 14514 | |
252b5132 | 14515 | r_symndx = ELF32_R_SYM (rel->r_info); |
eb043451 | 14516 | r_type = ELF32_R_TYPE (rel->r_info); |
eb043451 | 14517 | r_type = arm_real_reloc_type (htab, r_type); |
ba93b8ac | 14518 | |
ce98a316 NC |
14519 | if (r_symndx >= nsyms |
14520 | /* PR 9934: It is possible to have relocations that do not | |
14521 | refer to symbols, thus it is also possible to have an | |
14522 | object file containing relocations but no symbol table. */ | |
cf35638d | 14523 | && (r_symndx > STN_UNDEF || nsyms > 0)) |
ba93b8ac DJ |
14524 | { |
14525 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd, | |
ce98a316 | 14526 | r_symndx); |
ba93b8ac DJ |
14527 | return FALSE; |
14528 | } | |
14529 | ||
34e77a92 RS |
14530 | h = NULL; |
14531 | isym = NULL; | |
14532 | if (nsyms > 0) | |
973a3492 | 14533 | { |
34e77a92 RS |
14534 | if (r_symndx < symtab_hdr->sh_info) |
14535 | { | |
14536 | /* A local symbol. */ | |
14537 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
14538 | abfd, r_symndx); | |
14539 | if (isym == NULL) | |
14540 | return FALSE; | |
14541 | } | |
14542 | else | |
14543 | { | |
14544 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
14545 | while (h->root.type == bfd_link_hash_indirect | |
14546 | || h->root.type == bfd_link_hash_warning) | |
14547 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
81fbe831 AM |
14548 | |
14549 | /* PR15323, ref flags aren't set for references in the | |
14550 | same object. */ | |
14551 | h->root.non_ir_ref = 1; | |
34e77a92 | 14552 | } |
973a3492 | 14553 | } |
9a5aca8c | 14554 | |
b7693d02 DJ |
14555 | eh = (struct elf32_arm_link_hash_entry *) h; |
14556 | ||
f6e32f6d RS |
14557 | call_reloc_p = FALSE; |
14558 | may_become_dynamic_p = FALSE; | |
14559 | may_need_local_target_p = FALSE; | |
14560 | ||
0855e32b NS |
14561 | /* Could be done earlier, if h were already available. */ |
14562 | r_type = elf32_arm_tls_transition (info, r_type, h); | |
eb043451 | 14563 | switch (r_type) |
99059e56 | 14564 | { |
5e681ec4 | 14565 | case R_ARM_GOT32: |
eb043451 | 14566 | case R_ARM_GOT_PREL: |
ba93b8ac DJ |
14567 | case R_ARM_TLS_GD32: |
14568 | case R_ARM_TLS_IE32: | |
0855e32b NS |
14569 | case R_ARM_TLS_GOTDESC: |
14570 | case R_ARM_TLS_DESCSEQ: | |
14571 | case R_ARM_THM_TLS_DESCSEQ: | |
14572 | case R_ARM_TLS_CALL: | |
14573 | case R_ARM_THM_TLS_CALL: | |
5e681ec4 | 14574 | /* This symbol requires a global offset table entry. */ |
ba93b8ac DJ |
14575 | { |
14576 | int tls_type, old_tls_type; | |
5e681ec4 | 14577 | |
ba93b8ac DJ |
14578 | switch (r_type) |
14579 | { | |
14580 | case R_ARM_TLS_GD32: tls_type = GOT_TLS_GD; break; | |
b38cadfb | 14581 | |
ba93b8ac | 14582 | case R_ARM_TLS_IE32: tls_type = GOT_TLS_IE; break; |
b38cadfb | 14583 | |
0855e32b NS |
14584 | case R_ARM_TLS_GOTDESC: |
14585 | case R_ARM_TLS_CALL: case R_ARM_THM_TLS_CALL: | |
14586 | case R_ARM_TLS_DESCSEQ: case R_ARM_THM_TLS_DESCSEQ: | |
14587 | tls_type = GOT_TLS_GDESC; break; | |
b38cadfb | 14588 | |
ba93b8ac DJ |
14589 | default: tls_type = GOT_NORMAL; break; |
14590 | } | |
252b5132 | 14591 | |
0e1862bb | 14592 | if (!bfd_link_executable (info) && (tls_type & GOT_TLS_IE)) |
eea6dad2 KM |
14593 | info->flags |= DF_STATIC_TLS; |
14594 | ||
ba93b8ac DJ |
14595 | if (h != NULL) |
14596 | { | |
14597 | h->got.refcount++; | |
14598 | old_tls_type = elf32_arm_hash_entry (h)->tls_type; | |
14599 | } | |
14600 | else | |
14601 | { | |
ba93b8ac | 14602 | /* This is a global offset table entry for a local symbol. */ |
34e77a92 RS |
14603 | if (!elf32_arm_allocate_local_sym_info (abfd)) |
14604 | return FALSE; | |
14605 | elf_local_got_refcounts (abfd)[r_symndx] += 1; | |
ba93b8ac DJ |
14606 | old_tls_type = elf32_arm_local_got_tls_type (abfd) [r_symndx]; |
14607 | } | |
14608 | ||
0855e32b | 14609 | /* If a variable is accessed with both tls methods, two |
99059e56 | 14610 | slots may be created. */ |
0855e32b NS |
14611 | if (GOT_TLS_GD_ANY_P (old_tls_type) |
14612 | && GOT_TLS_GD_ANY_P (tls_type)) | |
14613 | tls_type |= old_tls_type; | |
14614 | ||
14615 | /* We will already have issued an error message if there | |
14616 | is a TLS/non-TLS mismatch, based on the symbol | |
14617 | type. So just combine any TLS types needed. */ | |
ba93b8ac DJ |
14618 | if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL |
14619 | && tls_type != GOT_NORMAL) | |
14620 | tls_type |= old_tls_type; | |
14621 | ||
0855e32b | 14622 | /* If the symbol is accessed in both IE and GDESC |
99059e56 RM |
14623 | method, we're able to relax. Turn off the GDESC flag, |
14624 | without messing up with any other kind of tls types | |
6a631e86 | 14625 | that may be involved. */ |
0855e32b NS |
14626 | if ((tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_GDESC)) |
14627 | tls_type &= ~GOT_TLS_GDESC; | |
14628 | ||
ba93b8ac DJ |
14629 | if (old_tls_type != tls_type) |
14630 | { | |
14631 | if (h != NULL) | |
14632 | elf32_arm_hash_entry (h)->tls_type = tls_type; | |
14633 | else | |
14634 | elf32_arm_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
14635 | } | |
14636 | } | |
8029a119 | 14637 | /* Fall through. */ |
ba93b8ac DJ |
14638 | |
14639 | case R_ARM_TLS_LDM32: | |
14640 | if (r_type == R_ARM_TLS_LDM32) | |
14641 | htab->tls_ldm_got.refcount++; | |
8029a119 | 14642 | /* Fall through. */ |
252b5132 | 14643 | |
c19d1205 | 14644 | case R_ARM_GOTOFF32: |
5e681ec4 | 14645 | case R_ARM_GOTPC: |
cbc704f3 RS |
14646 | if (htab->root.sgot == NULL |
14647 | && !create_got_section (htab->root.dynobj, info)) | |
14648 | return FALSE; | |
252b5132 RH |
14649 | break; |
14650 | ||
252b5132 | 14651 | case R_ARM_PC24: |
7359ea65 | 14652 | case R_ARM_PLT32: |
5b5bb741 PB |
14653 | case R_ARM_CALL: |
14654 | case R_ARM_JUMP24: | |
eb043451 | 14655 | case R_ARM_PREL31: |
c19d1205 | 14656 | case R_ARM_THM_CALL: |
bd97cb95 DJ |
14657 | case R_ARM_THM_JUMP24: |
14658 | case R_ARM_THM_JUMP19: | |
f6e32f6d RS |
14659 | call_reloc_p = TRUE; |
14660 | may_need_local_target_p = TRUE; | |
14661 | break; | |
14662 | ||
14663 | case R_ARM_ABS12: | |
14664 | /* VxWorks uses dynamic R_ARM_ABS12 relocations for | |
14665 | ldr __GOTT_INDEX__ offsets. */ | |
14666 | if (!htab->vxworks_p) | |
14667 | { | |
14668 | may_need_local_target_p = TRUE; | |
14669 | break; | |
14670 | } | |
aebf9be7 NC |
14671 | else goto jump_over; |
14672 | ||
f6e32f6d | 14673 | /* Fall through. */ |
39623e12 | 14674 | |
96c23d59 JM |
14675 | case R_ARM_MOVW_ABS_NC: |
14676 | case R_ARM_MOVT_ABS: | |
14677 | case R_ARM_THM_MOVW_ABS_NC: | |
14678 | case R_ARM_THM_MOVT_ABS: | |
0e1862bb | 14679 | if (bfd_link_pic (info)) |
96c23d59 JM |
14680 | { |
14681 | (*_bfd_error_handler) | |
14682 | (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"), | |
14683 | abfd, elf32_arm_howto_table_1[r_type].name, | |
14684 | (h) ? h->root.root.string : "a local symbol"); | |
14685 | bfd_set_error (bfd_error_bad_value); | |
14686 | return FALSE; | |
14687 | } | |
14688 | ||
14689 | /* Fall through. */ | |
39623e12 PB |
14690 | case R_ARM_ABS32: |
14691 | case R_ARM_ABS32_NOI: | |
aebf9be7 | 14692 | jump_over: |
0e1862bb | 14693 | if (h != NULL && bfd_link_executable (info)) |
97323ad1 WN |
14694 | { |
14695 | h->pointer_equality_needed = 1; | |
14696 | } | |
14697 | /* Fall through. */ | |
39623e12 PB |
14698 | case R_ARM_REL32: |
14699 | case R_ARM_REL32_NOI: | |
b6895b4f PB |
14700 | case R_ARM_MOVW_PREL_NC: |
14701 | case R_ARM_MOVT_PREL: | |
b6895b4f PB |
14702 | case R_ARM_THM_MOVW_PREL_NC: |
14703 | case R_ARM_THM_MOVT_PREL: | |
39623e12 | 14704 | |
b7693d02 | 14705 | /* Should the interworking branches be listed here? */ |
0e1862bb | 14706 | if ((bfd_link_pic (info) || htab->root.is_relocatable_executable) |
34e77a92 RS |
14707 | && (sec->flags & SEC_ALLOC) != 0) |
14708 | { | |
14709 | if (h == NULL | |
469a3493 | 14710 | && elf32_arm_howto_from_type (r_type)->pc_relative) |
34e77a92 RS |
14711 | { |
14712 | /* In shared libraries and relocatable executables, | |
14713 | we treat local relative references as calls; | |
14714 | see the related SYMBOL_CALLS_LOCAL code in | |
14715 | allocate_dynrelocs. */ | |
14716 | call_reloc_p = TRUE; | |
14717 | may_need_local_target_p = TRUE; | |
14718 | } | |
14719 | else | |
14720 | /* We are creating a shared library or relocatable | |
14721 | executable, and this is a reloc against a global symbol, | |
14722 | or a non-PC-relative reloc against a local symbol. | |
14723 | We may need to copy the reloc into the output. */ | |
14724 | may_become_dynamic_p = TRUE; | |
14725 | } | |
f6e32f6d RS |
14726 | else |
14727 | may_need_local_target_p = TRUE; | |
252b5132 RH |
14728 | break; |
14729 | ||
99059e56 RM |
14730 | /* This relocation describes the C++ object vtable hierarchy. |
14731 | Reconstruct it for later use during GC. */ | |
14732 | case R_ARM_GNU_VTINHERIT: | |
14733 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
14734 | return FALSE; | |
14735 | break; | |
14736 | ||
14737 | /* This relocation describes which C++ vtable entries are actually | |
14738 | used. Record for later use during GC. */ | |
14739 | case R_ARM_GNU_VTENTRY: | |
14740 | BFD_ASSERT (h != NULL); | |
14741 | if (h != NULL | |
14742 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
14743 | return FALSE; | |
14744 | break; | |
14745 | } | |
f6e32f6d RS |
14746 | |
14747 | if (h != NULL) | |
14748 | { | |
14749 | if (call_reloc_p) | |
14750 | /* We may need a .plt entry if the function this reloc | |
14751 | refers to is in a different object, regardless of the | |
14752 | symbol's type. We can't tell for sure yet, because | |
14753 | something later might force the symbol local. */ | |
14754 | h->needs_plt = 1; | |
14755 | else if (may_need_local_target_p) | |
14756 | /* If this reloc is in a read-only section, we might | |
14757 | need a copy reloc. We can't check reliably at this | |
14758 | stage whether the section is read-only, as input | |
14759 | sections have not yet been mapped to output sections. | |
14760 | Tentatively set the flag for now, and correct in | |
14761 | adjust_dynamic_symbol. */ | |
14762 | h->non_got_ref = 1; | |
14763 | } | |
14764 | ||
34e77a92 RS |
14765 | if (may_need_local_target_p |
14766 | && (h != NULL || ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)) | |
f6e32f6d | 14767 | { |
34e77a92 RS |
14768 | union gotplt_union *root_plt; |
14769 | struct arm_plt_info *arm_plt; | |
14770 | struct arm_local_iplt_info *local_iplt; | |
14771 | ||
14772 | if (h != NULL) | |
14773 | { | |
14774 | root_plt = &h->plt; | |
14775 | arm_plt = &eh->plt; | |
14776 | } | |
14777 | else | |
14778 | { | |
14779 | local_iplt = elf32_arm_create_local_iplt (abfd, r_symndx); | |
14780 | if (local_iplt == NULL) | |
14781 | return FALSE; | |
14782 | root_plt = &local_iplt->root; | |
14783 | arm_plt = &local_iplt->arm; | |
14784 | } | |
14785 | ||
f6e32f6d RS |
14786 | /* If the symbol is a function that doesn't bind locally, |
14787 | this relocation will need a PLT entry. */ | |
a8c887dd NC |
14788 | if (root_plt->refcount != -1) |
14789 | root_plt->refcount += 1; | |
34e77a92 RS |
14790 | |
14791 | if (!call_reloc_p) | |
14792 | arm_plt->noncall_refcount++; | |
f6e32f6d RS |
14793 | |
14794 | /* It's too early to use htab->use_blx here, so we have to | |
14795 | record possible blx references separately from | |
14796 | relocs that definitely need a thumb stub. */ | |
14797 | ||
14798 | if (r_type == R_ARM_THM_CALL) | |
34e77a92 | 14799 | arm_plt->maybe_thumb_refcount += 1; |
f6e32f6d RS |
14800 | |
14801 | if (r_type == R_ARM_THM_JUMP24 | |
14802 | || r_type == R_ARM_THM_JUMP19) | |
34e77a92 | 14803 | arm_plt->thumb_refcount += 1; |
f6e32f6d RS |
14804 | } |
14805 | ||
14806 | if (may_become_dynamic_p) | |
14807 | { | |
14808 | struct elf_dyn_relocs *p, **head; | |
14809 | ||
14810 | /* Create a reloc section in dynobj. */ | |
14811 | if (sreloc == NULL) | |
14812 | { | |
14813 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
14814 | (sec, dynobj, 2, abfd, ! htab->use_rel); | |
14815 | ||
14816 | if (sreloc == NULL) | |
14817 | return FALSE; | |
14818 | ||
14819 | /* BPABI objects never have dynamic relocations mapped. */ | |
14820 | if (htab->symbian_p) | |
14821 | { | |
14822 | flagword flags; | |
14823 | ||
14824 | flags = bfd_get_section_flags (dynobj, sreloc); | |
14825 | flags &= ~(SEC_LOAD | SEC_ALLOC); | |
14826 | bfd_set_section_flags (dynobj, sreloc, flags); | |
14827 | } | |
14828 | } | |
14829 | ||
14830 | /* If this is a global symbol, count the number of | |
14831 | relocations we need for this symbol. */ | |
14832 | if (h != NULL) | |
14833 | head = &((struct elf32_arm_link_hash_entry *) h)->dyn_relocs; | |
14834 | else | |
14835 | { | |
34e77a92 RS |
14836 | head = elf32_arm_get_local_dynreloc_list (abfd, r_symndx, isym); |
14837 | if (head == NULL) | |
f6e32f6d | 14838 | return FALSE; |
f6e32f6d RS |
14839 | } |
14840 | ||
14841 | p = *head; | |
14842 | if (p == NULL || p->sec != sec) | |
14843 | { | |
14844 | bfd_size_type amt = sizeof *p; | |
14845 | ||
14846 | p = (struct elf_dyn_relocs *) bfd_alloc (htab->root.dynobj, amt); | |
14847 | if (p == NULL) | |
14848 | return FALSE; | |
14849 | p->next = *head; | |
14850 | *head = p; | |
14851 | p->sec = sec; | |
14852 | p->count = 0; | |
14853 | p->pc_count = 0; | |
14854 | } | |
14855 | ||
469a3493 | 14856 | if (elf32_arm_howto_from_type (r_type)->pc_relative) |
f6e32f6d RS |
14857 | p->pc_count += 1; |
14858 | p->count += 1; | |
14859 | } | |
252b5132 | 14860 | } |
f21f3fe0 | 14861 | |
b34976b6 | 14862 | return TRUE; |
252b5132 RH |
14863 | } |
14864 | ||
6a5bb875 | 14865 | /* Unwinding tables are not referenced directly. This pass marks them as |
4ba2ef8f TP |
14866 | required if the corresponding code section is marked. Similarly, ARMv8-M |
14867 | secure entry functions can only be referenced by SG veneers which are | |
14868 | created after the GC process. They need to be marked in case they reside in | |
14869 | their own section (as would be the case if code was compiled with | |
14870 | -ffunction-sections). */ | |
6a5bb875 PB |
14871 | |
14872 | static bfd_boolean | |
906e58ca NC |
14873 | elf32_arm_gc_mark_extra_sections (struct bfd_link_info *info, |
14874 | elf_gc_mark_hook_fn gc_mark_hook) | |
6a5bb875 PB |
14875 | { |
14876 | bfd *sub; | |
14877 | Elf_Internal_Shdr **elf_shdrp; | |
4ba2ef8f TP |
14878 | asection *cmse_sec; |
14879 | obj_attribute *out_attr; | |
14880 | Elf_Internal_Shdr *symtab_hdr; | |
14881 | unsigned i, sym_count, ext_start; | |
14882 | const struct elf_backend_data *bed; | |
14883 | struct elf_link_hash_entry **sym_hashes; | |
14884 | struct elf32_arm_link_hash_entry *cmse_hash; | |
14885 | bfd_boolean again, is_v8m, first_bfd_browse = TRUE; | |
6a5bb875 | 14886 | |
7f6ab9f8 AM |
14887 | _bfd_elf_gc_mark_extra_sections (info, gc_mark_hook); |
14888 | ||
4ba2ef8f TP |
14889 | out_attr = elf_known_obj_attributes_proc (info->output_bfd); |
14890 | is_v8m = out_attr[Tag_CPU_arch].i >= TAG_CPU_ARCH_V8M_BASE | |
14891 | && out_attr[Tag_CPU_arch_profile].i == 'M'; | |
14892 | ||
6a5bb875 PB |
14893 | /* Marking EH data may cause additional code sections to be marked, |
14894 | requiring multiple passes. */ | |
14895 | again = TRUE; | |
14896 | while (again) | |
14897 | { | |
14898 | again = FALSE; | |
c72f2fb2 | 14899 | for (sub = info->input_bfds; sub != NULL; sub = sub->link.next) |
6a5bb875 PB |
14900 | { |
14901 | asection *o; | |
14902 | ||
0ffa91dd | 14903 | if (! is_arm_elf (sub)) |
6a5bb875 PB |
14904 | continue; |
14905 | ||
14906 | elf_shdrp = elf_elfsections (sub); | |
14907 | for (o = sub->sections; o != NULL; o = o->next) | |
14908 | { | |
14909 | Elf_Internal_Shdr *hdr; | |
0ffa91dd | 14910 | |
6a5bb875 | 14911 | hdr = &elf_section_data (o)->this_hdr; |
4fbb74a6 AM |
14912 | if (hdr->sh_type == SHT_ARM_EXIDX |
14913 | && hdr->sh_link | |
14914 | && hdr->sh_link < elf_numsections (sub) | |
6a5bb875 PB |
14915 | && !o->gc_mark |
14916 | && elf_shdrp[hdr->sh_link]->bfd_section->gc_mark) | |
14917 | { | |
14918 | again = TRUE; | |
14919 | if (!_bfd_elf_gc_mark (info, o, gc_mark_hook)) | |
14920 | return FALSE; | |
14921 | } | |
14922 | } | |
4ba2ef8f TP |
14923 | |
14924 | /* Mark section holding ARMv8-M secure entry functions. We mark all | |
14925 | of them so no need for a second browsing. */ | |
14926 | if (is_v8m && first_bfd_browse) | |
14927 | { | |
14928 | sym_hashes = elf_sym_hashes (sub); | |
14929 | bed = get_elf_backend_data (sub); | |
14930 | symtab_hdr = &elf_tdata (sub)->symtab_hdr; | |
14931 | sym_count = symtab_hdr->sh_size / bed->s->sizeof_sym; | |
14932 | ext_start = symtab_hdr->sh_info; | |
14933 | ||
14934 | /* Scan symbols. */ | |
14935 | for (i = ext_start; i < sym_count; i++) | |
14936 | { | |
14937 | cmse_hash = elf32_arm_hash_entry (sym_hashes[i - ext_start]); | |
14938 | ||
14939 | /* Assume it is a special symbol. If not, cmse_scan will | |
14940 | warn about it and user can do something about it. */ | |
14941 | if (ARM_GET_SYM_CMSE_SPCL (cmse_hash->root.target_internal)) | |
14942 | { | |
14943 | cmse_sec = cmse_hash->root.root.u.def.section; | |
5025eb7c AO |
14944 | if (!cmse_sec->gc_mark |
14945 | && !_bfd_elf_gc_mark (info, cmse_sec, gc_mark_hook)) | |
4ba2ef8f TP |
14946 | return FALSE; |
14947 | } | |
14948 | } | |
14949 | } | |
6a5bb875 | 14950 | } |
4ba2ef8f | 14951 | first_bfd_browse = FALSE; |
6a5bb875 PB |
14952 | } |
14953 | ||
14954 | return TRUE; | |
14955 | } | |
14956 | ||
3c9458e9 NC |
14957 | /* Treat mapping symbols as special target symbols. */ |
14958 | ||
14959 | static bfd_boolean | |
14960 | elf32_arm_is_target_special_symbol (bfd * abfd ATTRIBUTE_UNUSED, asymbol * sym) | |
14961 | { | |
b0796911 PB |
14962 | return bfd_is_arm_special_symbol_name (sym->name, |
14963 | BFD_ARM_SPECIAL_SYM_TYPE_ANY); | |
3c9458e9 NC |
14964 | } |
14965 | ||
0367ecfb NC |
14966 | /* This is a copy of elf_find_function() from elf.c except that |
14967 | ARM mapping symbols are ignored when looking for function names | |
14968 | and STT_ARM_TFUNC is considered to a function type. */ | |
252b5132 | 14969 | |
0367ecfb NC |
14970 | static bfd_boolean |
14971 | arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED, | |
0367ecfb | 14972 | asymbol ** symbols, |
fb167eb2 | 14973 | asection * section, |
0367ecfb NC |
14974 | bfd_vma offset, |
14975 | const char ** filename_ptr, | |
14976 | const char ** functionname_ptr) | |
14977 | { | |
14978 | const char * filename = NULL; | |
14979 | asymbol * func = NULL; | |
14980 | bfd_vma low_func = 0; | |
14981 | asymbol ** p; | |
252b5132 RH |
14982 | |
14983 | for (p = symbols; *p != NULL; p++) | |
14984 | { | |
14985 | elf_symbol_type *q; | |
14986 | ||
14987 | q = (elf_symbol_type *) *p; | |
14988 | ||
252b5132 RH |
14989 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) |
14990 | { | |
14991 | default: | |
14992 | break; | |
14993 | case STT_FILE: | |
14994 | filename = bfd_asymbol_name (&q->symbol); | |
14995 | break; | |
252b5132 RH |
14996 | case STT_FUNC: |
14997 | case STT_ARM_TFUNC: | |
9d2da7ca | 14998 | case STT_NOTYPE: |
b0796911 | 14999 | /* Skip mapping symbols. */ |
0367ecfb | 15000 | if ((q->symbol.flags & BSF_LOCAL) |
b0796911 PB |
15001 | && bfd_is_arm_special_symbol_name (q->symbol.name, |
15002 | BFD_ARM_SPECIAL_SYM_TYPE_ANY)) | |
0367ecfb NC |
15003 | continue; |
15004 | /* Fall through. */ | |
6b40fcba | 15005 | if (bfd_get_section (&q->symbol) == section |
252b5132 RH |
15006 | && q->symbol.value >= low_func |
15007 | && q->symbol.value <= offset) | |
15008 | { | |
15009 | func = (asymbol *) q; | |
15010 | low_func = q->symbol.value; | |
15011 | } | |
15012 | break; | |
15013 | } | |
15014 | } | |
15015 | ||
15016 | if (func == NULL) | |
b34976b6 | 15017 | return FALSE; |
252b5132 | 15018 | |
0367ecfb NC |
15019 | if (filename_ptr) |
15020 | *filename_ptr = filename; | |
15021 | if (functionname_ptr) | |
15022 | *functionname_ptr = bfd_asymbol_name (func); | |
15023 | ||
15024 | return TRUE; | |
906e58ca | 15025 | } |
0367ecfb NC |
15026 | |
15027 | ||
15028 | /* Find the nearest line to a particular section and offset, for error | |
15029 | reporting. This code is a duplicate of the code in elf.c, except | |
15030 | that it uses arm_elf_find_function. */ | |
15031 | ||
15032 | static bfd_boolean | |
15033 | elf32_arm_find_nearest_line (bfd * abfd, | |
0367ecfb | 15034 | asymbol ** symbols, |
fb167eb2 | 15035 | asection * section, |
0367ecfb NC |
15036 | bfd_vma offset, |
15037 | const char ** filename_ptr, | |
15038 | const char ** functionname_ptr, | |
fb167eb2 AM |
15039 | unsigned int * line_ptr, |
15040 | unsigned int * discriminator_ptr) | |
0367ecfb NC |
15041 | { |
15042 | bfd_boolean found = FALSE; | |
15043 | ||
fb167eb2 | 15044 | if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset, |
0367ecfb | 15045 | filename_ptr, functionname_ptr, |
fb167eb2 AM |
15046 | line_ptr, discriminator_ptr, |
15047 | dwarf_debug_sections, 0, | |
0367ecfb NC |
15048 | & elf_tdata (abfd)->dwarf2_find_line_info)) |
15049 | { | |
15050 | if (!*functionname_ptr) | |
fb167eb2 | 15051 | arm_elf_find_function (abfd, symbols, section, offset, |
0367ecfb NC |
15052 | *filename_ptr ? NULL : filename_ptr, |
15053 | functionname_ptr); | |
f21f3fe0 | 15054 | |
0367ecfb NC |
15055 | return TRUE; |
15056 | } | |
15057 | ||
fb167eb2 AM |
15058 | /* Skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain |
15059 | uses DWARF1. */ | |
15060 | ||
0367ecfb NC |
15061 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, |
15062 | & found, filename_ptr, | |
15063 | functionname_ptr, line_ptr, | |
15064 | & elf_tdata (abfd)->line_info)) | |
15065 | return FALSE; | |
15066 | ||
15067 | if (found && (*functionname_ptr || *line_ptr)) | |
15068 | return TRUE; | |
15069 | ||
15070 | if (symbols == NULL) | |
15071 | return FALSE; | |
15072 | ||
fb167eb2 | 15073 | if (! arm_elf_find_function (abfd, symbols, section, offset, |
0367ecfb NC |
15074 | filename_ptr, functionname_ptr)) |
15075 | return FALSE; | |
15076 | ||
15077 | *line_ptr = 0; | |
b34976b6 | 15078 | return TRUE; |
252b5132 RH |
15079 | } |
15080 | ||
4ab527b0 FF |
15081 | static bfd_boolean |
15082 | elf32_arm_find_inliner_info (bfd * abfd, | |
15083 | const char ** filename_ptr, | |
15084 | const char ** functionname_ptr, | |
15085 | unsigned int * line_ptr) | |
15086 | { | |
15087 | bfd_boolean found; | |
15088 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
15089 | functionname_ptr, line_ptr, | |
15090 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
15091 | return found; | |
15092 | } | |
15093 | ||
252b5132 RH |
15094 | /* Adjust a symbol defined by a dynamic object and referenced by a |
15095 | regular object. The current definition is in some section of the | |
15096 | dynamic object, but we're not including those sections. We have to | |
15097 | change the definition to something the rest of the link can | |
15098 | understand. */ | |
15099 | ||
b34976b6 | 15100 | static bfd_boolean |
57e8b36a NC |
15101 | elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info, |
15102 | struct elf_link_hash_entry * h) | |
252b5132 RH |
15103 | { |
15104 | bfd * dynobj; | |
15105 | asection * s; | |
b7693d02 | 15106 | struct elf32_arm_link_hash_entry * eh; |
67687978 | 15107 | struct elf32_arm_link_hash_table *globals; |
252b5132 | 15108 | |
67687978 | 15109 | globals = elf32_arm_hash_table (info); |
4dfe6ac6 NC |
15110 | if (globals == NULL) |
15111 | return FALSE; | |
15112 | ||
252b5132 RH |
15113 | dynobj = elf_hash_table (info)->dynobj; |
15114 | ||
15115 | /* Make sure we know what is going on here. */ | |
15116 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 15117 | && (h->needs_plt |
34e77a92 | 15118 | || h->type == STT_GNU_IFUNC |
f6e332e6 | 15119 | || h->u.weakdef != NULL |
f5385ebf AM |
15120 | || (h->def_dynamic |
15121 | && h->ref_regular | |
15122 | && !h->def_regular))); | |
252b5132 | 15123 | |
b7693d02 DJ |
15124 | eh = (struct elf32_arm_link_hash_entry *) h; |
15125 | ||
252b5132 RH |
15126 | /* If this is a function, put it in the procedure linkage table. We |
15127 | will fill in the contents of the procedure linkage table later, | |
15128 | when we know the address of the .got section. */ | |
34e77a92 | 15129 | if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt) |
252b5132 | 15130 | { |
34e77a92 RS |
15131 | /* Calls to STT_GNU_IFUNC symbols always use a PLT, even if the |
15132 | symbol binds locally. */ | |
5e681ec4 | 15133 | if (h->plt.refcount <= 0 |
34e77a92 RS |
15134 | || (h->type != STT_GNU_IFUNC |
15135 | && (SYMBOL_CALLS_LOCAL (info, h) | |
15136 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
15137 | && h->root.type == bfd_link_hash_undefweak)))) | |
252b5132 RH |
15138 | { |
15139 | /* This case can occur if we saw a PLT32 reloc in an input | |
5e681ec4 PB |
15140 | file, but the symbol was never referred to by a dynamic |
15141 | object, or if all references were garbage collected. In | |
15142 | such a case, we don't actually need to build a procedure | |
15143 | linkage table, and we can just do a PC24 reloc instead. */ | |
15144 | h->plt.offset = (bfd_vma) -1; | |
34e77a92 RS |
15145 | eh->plt.thumb_refcount = 0; |
15146 | eh->plt.maybe_thumb_refcount = 0; | |
15147 | eh->plt.noncall_refcount = 0; | |
f5385ebf | 15148 | h->needs_plt = 0; |
252b5132 RH |
15149 | } |
15150 | ||
b34976b6 | 15151 | return TRUE; |
252b5132 | 15152 | } |
5e681ec4 | 15153 | else |
b7693d02 DJ |
15154 | { |
15155 | /* It's possible that we incorrectly decided a .plt reloc was | |
15156 | needed for an R_ARM_PC24 or similar reloc to a non-function sym | |
15157 | in check_relocs. We can't decide accurately between function | |
15158 | and non-function syms in check-relocs; Objects loaded later in | |
15159 | the link may change h->type. So fix it now. */ | |
15160 | h->plt.offset = (bfd_vma) -1; | |
34e77a92 RS |
15161 | eh->plt.thumb_refcount = 0; |
15162 | eh->plt.maybe_thumb_refcount = 0; | |
15163 | eh->plt.noncall_refcount = 0; | |
b7693d02 | 15164 | } |
252b5132 RH |
15165 | |
15166 | /* If this is a weak symbol, and there is a real definition, the | |
15167 | processor independent code will have arranged for us to see the | |
15168 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 15169 | if (h->u.weakdef != NULL) |
252b5132 | 15170 | { |
f6e332e6 AM |
15171 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
15172 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
15173 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
15174 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 15175 | return TRUE; |
252b5132 RH |
15176 | } |
15177 | ||
ba93b8ac DJ |
15178 | /* If there are no non-GOT references, we do not need a copy |
15179 | relocation. */ | |
15180 | if (!h->non_got_ref) | |
15181 | return TRUE; | |
15182 | ||
252b5132 RH |
15183 | /* This is a reference to a symbol defined by a dynamic object which |
15184 | is not a function. */ | |
15185 | ||
15186 | /* If we are creating a shared library, we must presume that the | |
15187 | only references to the symbol are via the global offset table. | |
15188 | For such cases we need not do anything here; the relocations will | |
67687978 PB |
15189 | be handled correctly by relocate_section. Relocatable executables |
15190 | can reference data in shared objects directly, so we don't need to | |
15191 | do anything here. */ | |
0e1862bb | 15192 | if (bfd_link_pic (info) || globals->root.is_relocatable_executable) |
b34976b6 | 15193 | return TRUE; |
252b5132 RH |
15194 | |
15195 | /* We must allocate the symbol in our .dynbss section, which will | |
15196 | become part of the .bss section of the executable. There will be | |
15197 | an entry for this symbol in the .dynsym section. The dynamic | |
15198 | object will contain position independent code, so all references | |
15199 | from the dynamic object to this symbol will go through the global | |
15200 | offset table. The dynamic linker will use the .dynsym entry to | |
15201 | determine the address it must put in the global offset table, so | |
15202 | both the dynamic object and the regular object will refer to the | |
15203 | same memory location for the variable. */ | |
3d4d4302 | 15204 | s = bfd_get_linker_section (dynobj, ".dynbss"); |
252b5132 RH |
15205 | BFD_ASSERT (s != NULL); |
15206 | ||
5522f910 NC |
15207 | /* If allowed, we must generate a R_ARM_COPY reloc to tell the dynamic |
15208 | linker to copy the initial value out of the dynamic object and into | |
15209 | the runtime process image. We need to remember the offset into the | |
00a97672 | 15210 | .rel(a).bss section we are going to use. */ |
5522f910 NC |
15211 | if (info->nocopyreloc == 0 |
15212 | && (h->root.u.def.section->flags & SEC_ALLOC) != 0 | |
5522f910 | 15213 | && h->size != 0) |
252b5132 RH |
15214 | { |
15215 | asection *srel; | |
15216 | ||
3d4d4302 | 15217 | srel = bfd_get_linker_section (dynobj, RELOC_SECTION (globals, ".bss")); |
47beaa6a | 15218 | elf32_arm_allocate_dynrelocs (info, srel, 1); |
f5385ebf | 15219 | h->needs_copy = 1; |
252b5132 RH |
15220 | } |
15221 | ||
6cabe1ea | 15222 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
252b5132 RH |
15223 | } |
15224 | ||
5e681ec4 PB |
15225 | /* Allocate space in .plt, .got and associated reloc sections for |
15226 | dynamic relocs. */ | |
15227 | ||
15228 | static bfd_boolean | |
47beaa6a | 15229 | allocate_dynrelocs_for_symbol (struct elf_link_hash_entry *h, void * inf) |
5e681ec4 PB |
15230 | { |
15231 | struct bfd_link_info *info; | |
15232 | struct elf32_arm_link_hash_table *htab; | |
15233 | struct elf32_arm_link_hash_entry *eh; | |
0bdcacaf | 15234 | struct elf_dyn_relocs *p; |
5e681ec4 PB |
15235 | |
15236 | if (h->root.type == bfd_link_hash_indirect) | |
15237 | return TRUE; | |
15238 | ||
e6a6bb22 AM |
15239 | eh = (struct elf32_arm_link_hash_entry *) h; |
15240 | ||
5e681ec4 PB |
15241 | info = (struct bfd_link_info *) inf; |
15242 | htab = elf32_arm_hash_table (info); | |
4dfe6ac6 NC |
15243 | if (htab == NULL) |
15244 | return FALSE; | |
5e681ec4 | 15245 | |
34e77a92 | 15246 | if ((htab->root.dynamic_sections_created || h->type == STT_GNU_IFUNC) |
5e681ec4 PB |
15247 | && h->plt.refcount > 0) |
15248 | { | |
15249 | /* Make sure this symbol is output as a dynamic symbol. | |
15250 | Undefined weak syms won't yet be marked as dynamic. */ | |
15251 | if (h->dynindx == -1 | |
f5385ebf | 15252 | && !h->forced_local) |
5e681ec4 | 15253 | { |
c152c796 | 15254 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
15255 | return FALSE; |
15256 | } | |
15257 | ||
34e77a92 RS |
15258 | /* If the call in the PLT entry binds locally, the associated |
15259 | GOT entry should use an R_ARM_IRELATIVE relocation instead of | |
15260 | the usual R_ARM_JUMP_SLOT. Put it in the .iplt section rather | |
15261 | than the .plt section. */ | |
15262 | if (h->type == STT_GNU_IFUNC && SYMBOL_CALLS_LOCAL (info, h)) | |
15263 | { | |
15264 | eh->is_iplt = 1; | |
15265 | if (eh->plt.noncall_refcount == 0 | |
15266 | && SYMBOL_REFERENCES_LOCAL (info, h)) | |
15267 | /* All non-call references can be resolved directly. | |
15268 | This means that they can (and in some cases, must) | |
15269 | resolve directly to the run-time target, rather than | |
15270 | to the PLT. That in turns means that any .got entry | |
15271 | would be equal to the .igot.plt entry, so there's | |
15272 | no point having both. */ | |
15273 | h->got.refcount = 0; | |
15274 | } | |
15275 | ||
0e1862bb | 15276 | if (bfd_link_pic (info) |
34e77a92 | 15277 | || eh->is_iplt |
7359ea65 | 15278 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
5e681ec4 | 15279 | { |
34e77a92 | 15280 | elf32_arm_allocate_plt_entry (info, eh->is_iplt, &h->plt, &eh->plt); |
b7693d02 | 15281 | |
5e681ec4 PB |
15282 | /* If this symbol is not defined in a regular file, and we are |
15283 | not generating a shared library, then set the symbol to this | |
15284 | location in the .plt. This is required to make function | |
15285 | pointers compare as equal between the normal executable and | |
15286 | the shared library. */ | |
0e1862bb | 15287 | if (! bfd_link_pic (info) |
f5385ebf | 15288 | && !h->def_regular) |
5e681ec4 | 15289 | { |
34e77a92 | 15290 | h->root.u.def.section = htab->root.splt; |
5e681ec4 | 15291 | h->root.u.def.value = h->plt.offset; |
5e681ec4 | 15292 | |
67d74e43 DJ |
15293 | /* Make sure the function is not marked as Thumb, in case |
15294 | it is the target of an ABS32 relocation, which will | |
15295 | point to the PLT entry. */ | |
39d911fc | 15296 | ARM_SET_SYM_BRANCH_TYPE (h->target_internal, ST_BRANCH_TO_ARM); |
67d74e43 | 15297 | } |
022f8312 | 15298 | |
00a97672 RS |
15299 | /* VxWorks executables have a second set of relocations for |
15300 | each PLT entry. They go in a separate relocation section, | |
15301 | which is processed by the kernel loader. */ | |
0e1862bb | 15302 | if (htab->vxworks_p && !bfd_link_pic (info)) |
00a97672 RS |
15303 | { |
15304 | /* There is a relocation for the initial PLT entry: | |
15305 | an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */ | |
15306 | if (h->plt.offset == htab->plt_header_size) | |
47beaa6a | 15307 | elf32_arm_allocate_dynrelocs (info, htab->srelplt2, 1); |
00a97672 RS |
15308 | |
15309 | /* There are two extra relocations for each subsequent | |
15310 | PLT entry: an R_ARM_32 relocation for the GOT entry, | |
15311 | and an R_ARM_32 relocation for the PLT entry. */ | |
47beaa6a | 15312 | elf32_arm_allocate_dynrelocs (info, htab->srelplt2, 2); |
00a97672 | 15313 | } |
5e681ec4 PB |
15314 | } |
15315 | else | |
15316 | { | |
15317 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 15318 | h->needs_plt = 0; |
5e681ec4 PB |
15319 | } |
15320 | } | |
15321 | else | |
15322 | { | |
15323 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 15324 | h->needs_plt = 0; |
5e681ec4 PB |
15325 | } |
15326 | ||
0855e32b NS |
15327 | eh = (struct elf32_arm_link_hash_entry *) h; |
15328 | eh->tlsdesc_got = (bfd_vma) -1; | |
15329 | ||
5e681ec4 PB |
15330 | if (h->got.refcount > 0) |
15331 | { | |
15332 | asection *s; | |
15333 | bfd_boolean dyn; | |
ba93b8ac DJ |
15334 | int tls_type = elf32_arm_hash_entry (h)->tls_type; |
15335 | int indx; | |
5e681ec4 PB |
15336 | |
15337 | /* Make sure this symbol is output as a dynamic symbol. | |
15338 | Undefined weak syms won't yet be marked as dynamic. */ | |
15339 | if (h->dynindx == -1 | |
f5385ebf | 15340 | && !h->forced_local) |
5e681ec4 | 15341 | { |
c152c796 | 15342 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
15343 | return FALSE; |
15344 | } | |
15345 | ||
e5a52504 MM |
15346 | if (!htab->symbian_p) |
15347 | { | |
362d30a1 | 15348 | s = htab->root.sgot; |
e5a52504 | 15349 | h->got.offset = s->size; |
ba93b8ac DJ |
15350 | |
15351 | if (tls_type == GOT_UNKNOWN) | |
15352 | abort (); | |
15353 | ||
15354 | if (tls_type == GOT_NORMAL) | |
15355 | /* Non-TLS symbols need one GOT slot. */ | |
15356 | s->size += 4; | |
15357 | else | |
15358 | { | |
99059e56 RM |
15359 | if (tls_type & GOT_TLS_GDESC) |
15360 | { | |
0855e32b | 15361 | /* R_ARM_TLS_DESC needs 2 GOT slots. */ |
99059e56 | 15362 | eh->tlsdesc_got |
0855e32b NS |
15363 | = (htab->root.sgotplt->size |
15364 | - elf32_arm_compute_jump_table_size (htab)); | |
99059e56 RM |
15365 | htab->root.sgotplt->size += 8; |
15366 | h->got.offset = (bfd_vma) -2; | |
34e77a92 | 15367 | /* plt.got_offset needs to know there's a TLS_DESC |
0855e32b | 15368 | reloc in the middle of .got.plt. */ |
99059e56 RM |
15369 | htab->num_tls_desc++; |
15370 | } | |
0855e32b | 15371 | |
ba93b8ac | 15372 | if (tls_type & GOT_TLS_GD) |
0855e32b NS |
15373 | { |
15374 | /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. If | |
15375 | the symbol is both GD and GDESC, got.offset may | |
15376 | have been overwritten. */ | |
15377 | h->got.offset = s->size; | |
15378 | s->size += 8; | |
15379 | } | |
15380 | ||
ba93b8ac DJ |
15381 | if (tls_type & GOT_TLS_IE) |
15382 | /* R_ARM_TLS_IE32 needs one GOT slot. */ | |
15383 | s->size += 4; | |
15384 | } | |
15385 | ||
e5a52504 | 15386 | dyn = htab->root.dynamic_sections_created; |
ba93b8ac DJ |
15387 | |
15388 | indx = 0; | |
0e1862bb L |
15389 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
15390 | bfd_link_pic (info), | |
15391 | h) | |
15392 | && (!bfd_link_pic (info) | |
ba93b8ac DJ |
15393 | || !SYMBOL_REFERENCES_LOCAL (info, h))) |
15394 | indx = h->dynindx; | |
15395 | ||
15396 | if (tls_type != GOT_NORMAL | |
0e1862bb | 15397 | && (bfd_link_pic (info) || indx != 0) |
ba93b8ac DJ |
15398 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
15399 | || h->root.type != bfd_link_hash_undefweak)) | |
15400 | { | |
15401 | if (tls_type & GOT_TLS_IE) | |
47beaa6a | 15402 | elf32_arm_allocate_dynrelocs (info, htab->root.srelgot, 1); |
ba93b8ac DJ |
15403 | |
15404 | if (tls_type & GOT_TLS_GD) | |
47beaa6a | 15405 | elf32_arm_allocate_dynrelocs (info, htab->root.srelgot, 1); |
ba93b8ac | 15406 | |
b38cadfb | 15407 | if (tls_type & GOT_TLS_GDESC) |
0855e32b | 15408 | { |
47beaa6a | 15409 | elf32_arm_allocate_dynrelocs (info, htab->root.srelplt, 1); |
0855e32b NS |
15410 | /* GDESC needs a trampoline to jump to. */ |
15411 | htab->tls_trampoline = -1; | |
15412 | } | |
15413 | ||
15414 | /* Only GD needs it. GDESC just emits one relocation per | |
15415 | 2 entries. */ | |
b38cadfb | 15416 | if ((tls_type & GOT_TLS_GD) && indx != 0) |
47beaa6a | 15417 | elf32_arm_allocate_dynrelocs (info, htab->root.srelgot, 1); |
ba93b8ac | 15418 | } |
6f820c85 | 15419 | else if (indx != -1 && !SYMBOL_REFERENCES_LOCAL (info, h)) |
b436d854 RS |
15420 | { |
15421 | if (htab->root.dynamic_sections_created) | |
15422 | /* Reserve room for the GOT entry's R_ARM_GLOB_DAT relocation. */ | |
15423 | elf32_arm_allocate_dynrelocs (info, htab->root.srelgot, 1); | |
15424 | } | |
34e77a92 RS |
15425 | else if (h->type == STT_GNU_IFUNC |
15426 | && eh->plt.noncall_refcount == 0) | |
15427 | /* No non-call references resolve the STT_GNU_IFUNC's PLT entry; | |
15428 | they all resolve dynamically instead. Reserve room for the | |
15429 | GOT entry's R_ARM_IRELATIVE relocation. */ | |
15430 | elf32_arm_allocate_irelocs (info, htab->root.srelgot, 1); | |
0e1862bb L |
15431 | else if (bfd_link_pic (info) |
15432 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
15433 | || h->root.type != bfd_link_hash_undefweak)) | |
b436d854 | 15434 | /* Reserve room for the GOT entry's R_ARM_RELATIVE relocation. */ |
47beaa6a | 15435 | elf32_arm_allocate_dynrelocs (info, htab->root.srelgot, 1); |
e5a52504 | 15436 | } |
5e681ec4 PB |
15437 | } |
15438 | else | |
15439 | h->got.offset = (bfd_vma) -1; | |
15440 | ||
a4fd1a8e PB |
15441 | /* Allocate stubs for exported Thumb functions on v4t. */ |
15442 | if (!htab->use_blx && h->dynindx != -1 | |
0eaedd0e | 15443 | && h->def_regular |
39d911fc | 15444 | && ARM_GET_SYM_BRANCH_TYPE (h->target_internal) == ST_BRANCH_TO_THUMB |
a4fd1a8e PB |
15445 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) |
15446 | { | |
15447 | struct elf_link_hash_entry * th; | |
15448 | struct bfd_link_hash_entry * bh; | |
15449 | struct elf_link_hash_entry * myh; | |
15450 | char name[1024]; | |
15451 | asection *s; | |
15452 | bh = NULL; | |
15453 | /* Create a new symbol to regist the real location of the function. */ | |
15454 | s = h->root.u.def.section; | |
906e58ca | 15455 | sprintf (name, "__real_%s", h->root.root.string); |
a4fd1a8e PB |
15456 | _bfd_generic_link_add_one_symbol (info, s->owner, |
15457 | name, BSF_GLOBAL, s, | |
15458 | h->root.u.def.value, | |
15459 | NULL, TRUE, FALSE, &bh); | |
15460 | ||
15461 | myh = (struct elf_link_hash_entry *) bh; | |
35fc36a8 | 15462 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); |
a4fd1a8e | 15463 | myh->forced_local = 1; |
39d911fc | 15464 | ARM_SET_SYM_BRANCH_TYPE (myh->target_internal, ST_BRANCH_TO_THUMB); |
a4fd1a8e PB |
15465 | eh->export_glue = myh; |
15466 | th = record_arm_to_thumb_glue (info, h); | |
15467 | /* Point the symbol at the stub. */ | |
15468 | h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC); | |
39d911fc | 15469 | ARM_SET_SYM_BRANCH_TYPE (h->target_internal, ST_BRANCH_TO_ARM); |
a4fd1a8e PB |
15470 | h->root.u.def.section = th->root.u.def.section; |
15471 | h->root.u.def.value = th->root.u.def.value & ~1; | |
15472 | } | |
15473 | ||
0bdcacaf | 15474 | if (eh->dyn_relocs == NULL) |
5e681ec4 PB |
15475 | return TRUE; |
15476 | ||
15477 | /* In the shared -Bsymbolic case, discard space allocated for | |
15478 | dynamic pc-relative relocs against symbols which turn out to be | |
15479 | defined in regular objects. For the normal shared case, discard | |
15480 | space for pc-relative relocs that have become local due to symbol | |
15481 | visibility changes. */ | |
15482 | ||
0e1862bb | 15483 | if (bfd_link_pic (info) || htab->root.is_relocatable_executable) |
5e681ec4 | 15484 | { |
469a3493 RM |
15485 | /* Relocs that use pc_count are PC-relative forms, which will appear |
15486 | on something like ".long foo - ." or "movw REG, foo - .". We want | |
15487 | calls to protected symbols to resolve directly to the function | |
15488 | rather than going via the plt. If people want function pointer | |
15489 | comparisons to work as expected then they should avoid writing | |
15490 | assembly like ".long foo - .". */ | |
ba93b8ac DJ |
15491 | if (SYMBOL_CALLS_LOCAL (info, h)) |
15492 | { | |
0bdcacaf | 15493 | struct elf_dyn_relocs **pp; |
ba93b8ac | 15494 | |
0bdcacaf | 15495 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) |
ba93b8ac DJ |
15496 | { |
15497 | p->count -= p->pc_count; | |
15498 | p->pc_count = 0; | |
15499 | if (p->count == 0) | |
15500 | *pp = p->next; | |
15501 | else | |
15502 | pp = &p->next; | |
15503 | } | |
15504 | } | |
15505 | ||
4dfe6ac6 | 15506 | if (htab->vxworks_p) |
3348747a | 15507 | { |
0bdcacaf | 15508 | struct elf_dyn_relocs **pp; |
3348747a | 15509 | |
0bdcacaf | 15510 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) |
3348747a | 15511 | { |
0bdcacaf | 15512 | if (strcmp (p->sec->output_section->name, ".tls_vars") == 0) |
3348747a NS |
15513 | *pp = p->next; |
15514 | else | |
15515 | pp = &p->next; | |
15516 | } | |
15517 | } | |
15518 | ||
ba93b8ac | 15519 | /* Also discard relocs on undefined weak syms with non-default |
99059e56 | 15520 | visibility. */ |
0bdcacaf | 15521 | if (eh->dyn_relocs != NULL |
5e681ec4 | 15522 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 AM |
15523 | { |
15524 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
0bdcacaf | 15525 | eh->dyn_relocs = NULL; |
22d606e9 AM |
15526 | |
15527 | /* Make sure undefined weak symbols are output as a dynamic | |
15528 | symbol in PIEs. */ | |
15529 | else if (h->dynindx == -1 | |
15530 | && !h->forced_local) | |
15531 | { | |
15532 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
15533 | return FALSE; | |
15534 | } | |
15535 | } | |
15536 | ||
67687978 PB |
15537 | else if (htab->root.is_relocatable_executable && h->dynindx == -1 |
15538 | && h->root.type == bfd_link_hash_new) | |
15539 | { | |
15540 | /* Output absolute symbols so that we can create relocations | |
15541 | against them. For normal symbols we output a relocation | |
15542 | against the section that contains them. */ | |
15543 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
15544 | return FALSE; | |
15545 | } | |
15546 | ||
5e681ec4 PB |
15547 | } |
15548 | else | |
15549 | { | |
15550 | /* For the non-shared case, discard space for relocs against | |
15551 | symbols which turn out to need copy relocs or are not | |
15552 | dynamic. */ | |
15553 | ||
f5385ebf AM |
15554 | if (!h->non_got_ref |
15555 | && ((h->def_dynamic | |
15556 | && !h->def_regular) | |
5e681ec4 PB |
15557 | || (htab->root.dynamic_sections_created |
15558 | && (h->root.type == bfd_link_hash_undefweak | |
15559 | || h->root.type == bfd_link_hash_undefined)))) | |
15560 | { | |
15561 | /* Make sure this symbol is output as a dynamic symbol. | |
15562 | Undefined weak syms won't yet be marked as dynamic. */ | |
15563 | if (h->dynindx == -1 | |
f5385ebf | 15564 | && !h->forced_local) |
5e681ec4 | 15565 | { |
c152c796 | 15566 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
15567 | return FALSE; |
15568 | } | |
15569 | ||
15570 | /* If that succeeded, we know we'll be keeping all the | |
15571 | relocs. */ | |
15572 | if (h->dynindx != -1) | |
15573 | goto keep; | |
15574 | } | |
15575 | ||
0bdcacaf | 15576 | eh->dyn_relocs = NULL; |
5e681ec4 PB |
15577 | |
15578 | keep: ; | |
15579 | } | |
15580 | ||
15581 | /* Finally, allocate space. */ | |
0bdcacaf | 15582 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
5e681ec4 | 15583 | { |
0bdcacaf | 15584 | asection *sreloc = elf_section_data (p->sec)->sreloc; |
34e77a92 RS |
15585 | if (h->type == STT_GNU_IFUNC |
15586 | && eh->plt.noncall_refcount == 0 | |
15587 | && SYMBOL_REFERENCES_LOCAL (info, h)) | |
15588 | elf32_arm_allocate_irelocs (info, sreloc, p->count); | |
15589 | else | |
15590 | elf32_arm_allocate_dynrelocs (info, sreloc, p->count); | |
5e681ec4 PB |
15591 | } |
15592 | ||
15593 | return TRUE; | |
15594 | } | |
15595 | ||
08d1f311 DJ |
15596 | /* Find any dynamic relocs that apply to read-only sections. */ |
15597 | ||
15598 | static bfd_boolean | |
8029a119 | 15599 | elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry * h, void * inf) |
08d1f311 | 15600 | { |
8029a119 | 15601 | struct elf32_arm_link_hash_entry * eh; |
0bdcacaf | 15602 | struct elf_dyn_relocs * p; |
08d1f311 | 15603 | |
08d1f311 | 15604 | eh = (struct elf32_arm_link_hash_entry *) h; |
0bdcacaf | 15605 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
08d1f311 | 15606 | { |
0bdcacaf | 15607 | asection *s = p->sec; |
08d1f311 DJ |
15608 | |
15609 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
15610 | { | |
15611 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
15612 | ||
15613 | info->flags |= DF_TEXTREL; | |
15614 | ||
15615 | /* Not an error, just cut short the traversal. */ | |
15616 | return FALSE; | |
15617 | } | |
15618 | } | |
15619 | return TRUE; | |
15620 | } | |
15621 | ||
d504ffc8 DJ |
15622 | void |
15623 | bfd_elf32_arm_set_byteswap_code (struct bfd_link_info *info, | |
15624 | int byteswap_code) | |
15625 | { | |
15626 | struct elf32_arm_link_hash_table *globals; | |
15627 | ||
15628 | globals = elf32_arm_hash_table (info); | |
4dfe6ac6 NC |
15629 | if (globals == NULL) |
15630 | return; | |
15631 | ||
d504ffc8 DJ |
15632 | globals->byteswap_code = byteswap_code; |
15633 | } | |
15634 | ||
252b5132 RH |
15635 | /* Set the sizes of the dynamic sections. */ |
15636 | ||
b34976b6 | 15637 | static bfd_boolean |
57e8b36a NC |
15638 | elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED, |
15639 | struct bfd_link_info * info) | |
252b5132 RH |
15640 | { |
15641 | bfd * dynobj; | |
15642 | asection * s; | |
b34976b6 AM |
15643 | bfd_boolean plt; |
15644 | bfd_boolean relocs; | |
5e681ec4 PB |
15645 | bfd *ibfd; |
15646 | struct elf32_arm_link_hash_table *htab; | |
252b5132 | 15647 | |
5e681ec4 | 15648 | htab = elf32_arm_hash_table (info); |
4dfe6ac6 NC |
15649 | if (htab == NULL) |
15650 | return FALSE; | |
15651 | ||
252b5132 RH |
15652 | dynobj = elf_hash_table (info)->dynobj; |
15653 | BFD_ASSERT (dynobj != NULL); | |
39b41c9c | 15654 | check_use_blx (htab); |
252b5132 RH |
15655 | |
15656 | if (elf_hash_table (info)->dynamic_sections_created) | |
15657 | { | |
15658 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 15659 | if (bfd_link_executable (info) && !info->nointerp) |
252b5132 | 15660 | { |
3d4d4302 | 15661 | s = bfd_get_linker_section (dynobj, ".interp"); |
252b5132 | 15662 | BFD_ASSERT (s != NULL); |
eea6121a | 15663 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
252b5132 RH |
15664 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
15665 | } | |
15666 | } | |
5e681ec4 PB |
15667 | |
15668 | /* Set up .got offsets for local syms, and space for local dynamic | |
15669 | relocs. */ | |
c72f2fb2 | 15670 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
252b5132 | 15671 | { |
5e681ec4 PB |
15672 | bfd_signed_vma *local_got; |
15673 | bfd_signed_vma *end_local_got; | |
34e77a92 | 15674 | struct arm_local_iplt_info **local_iplt_ptr, *local_iplt; |
5e681ec4 | 15675 | char *local_tls_type; |
0855e32b | 15676 | bfd_vma *local_tlsdesc_gotent; |
5e681ec4 PB |
15677 | bfd_size_type locsymcount; |
15678 | Elf_Internal_Shdr *symtab_hdr; | |
15679 | asection *srel; | |
4dfe6ac6 | 15680 | bfd_boolean is_vxworks = htab->vxworks_p; |
34e77a92 | 15681 | unsigned int symndx; |
5e681ec4 | 15682 | |
0ffa91dd | 15683 | if (! is_arm_elf (ibfd)) |
5e681ec4 PB |
15684 | continue; |
15685 | ||
15686 | for (s = ibfd->sections; s != NULL; s = s->next) | |
15687 | { | |
0bdcacaf | 15688 | struct elf_dyn_relocs *p; |
5e681ec4 | 15689 | |
0bdcacaf | 15690 | for (p = (struct elf_dyn_relocs *) |
99059e56 | 15691 | elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
5e681ec4 | 15692 | { |
0bdcacaf RS |
15693 | if (!bfd_is_abs_section (p->sec) |
15694 | && bfd_is_abs_section (p->sec->output_section)) | |
5e681ec4 PB |
15695 | { |
15696 | /* Input section has been discarded, either because | |
15697 | it is a copy of a linkonce section or due to | |
15698 | linker script /DISCARD/, so we'll be discarding | |
15699 | the relocs too. */ | |
15700 | } | |
3348747a | 15701 | else if (is_vxworks |
0bdcacaf | 15702 | && strcmp (p->sec->output_section->name, |
3348747a NS |
15703 | ".tls_vars") == 0) |
15704 | { | |
15705 | /* Relocations in vxworks .tls_vars sections are | |
15706 | handled specially by the loader. */ | |
15707 | } | |
5e681ec4 PB |
15708 | else if (p->count != 0) |
15709 | { | |
0bdcacaf | 15710 | srel = elf_section_data (p->sec)->sreloc; |
47beaa6a | 15711 | elf32_arm_allocate_dynrelocs (info, srel, p->count); |
0bdcacaf | 15712 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
5e681ec4 PB |
15713 | info->flags |= DF_TEXTREL; |
15714 | } | |
15715 | } | |
15716 | } | |
15717 | ||
15718 | local_got = elf_local_got_refcounts (ibfd); | |
15719 | if (!local_got) | |
15720 | continue; | |
15721 | ||
0ffa91dd | 15722 | symtab_hdr = & elf_symtab_hdr (ibfd); |
5e681ec4 PB |
15723 | locsymcount = symtab_hdr->sh_info; |
15724 | end_local_got = local_got + locsymcount; | |
34e77a92 | 15725 | local_iplt_ptr = elf32_arm_local_iplt (ibfd); |
ba93b8ac | 15726 | local_tls_type = elf32_arm_local_got_tls_type (ibfd); |
0855e32b | 15727 | local_tlsdesc_gotent = elf32_arm_local_tlsdesc_gotent (ibfd); |
34e77a92 | 15728 | symndx = 0; |
362d30a1 RS |
15729 | s = htab->root.sgot; |
15730 | srel = htab->root.srelgot; | |
0855e32b | 15731 | for (; local_got < end_local_got; |
34e77a92 RS |
15732 | ++local_got, ++local_iplt_ptr, ++local_tls_type, |
15733 | ++local_tlsdesc_gotent, ++symndx) | |
5e681ec4 | 15734 | { |
0855e32b | 15735 | *local_tlsdesc_gotent = (bfd_vma) -1; |
34e77a92 RS |
15736 | local_iplt = *local_iplt_ptr; |
15737 | if (local_iplt != NULL) | |
15738 | { | |
15739 | struct elf_dyn_relocs *p; | |
15740 | ||
15741 | if (local_iplt->root.refcount > 0) | |
15742 | { | |
15743 | elf32_arm_allocate_plt_entry (info, TRUE, | |
15744 | &local_iplt->root, | |
15745 | &local_iplt->arm); | |
15746 | if (local_iplt->arm.noncall_refcount == 0) | |
15747 | /* All references to the PLT are calls, so all | |
15748 | non-call references can resolve directly to the | |
15749 | run-time target. This means that the .got entry | |
15750 | would be the same as the .igot.plt entry, so there's | |
15751 | no point creating both. */ | |
15752 | *local_got = 0; | |
15753 | } | |
15754 | else | |
15755 | { | |
15756 | BFD_ASSERT (local_iplt->arm.noncall_refcount == 0); | |
15757 | local_iplt->root.offset = (bfd_vma) -1; | |
15758 | } | |
15759 | ||
15760 | for (p = local_iplt->dyn_relocs; p != NULL; p = p->next) | |
15761 | { | |
15762 | asection *psrel; | |
15763 | ||
15764 | psrel = elf_section_data (p->sec)->sreloc; | |
15765 | if (local_iplt->arm.noncall_refcount == 0) | |
15766 | elf32_arm_allocate_irelocs (info, psrel, p->count); | |
15767 | else | |
15768 | elf32_arm_allocate_dynrelocs (info, psrel, p->count); | |
15769 | } | |
15770 | } | |
5e681ec4 PB |
15771 | if (*local_got > 0) |
15772 | { | |
34e77a92 RS |
15773 | Elf_Internal_Sym *isym; |
15774 | ||
eea6121a | 15775 | *local_got = s->size; |
ba93b8ac DJ |
15776 | if (*local_tls_type & GOT_TLS_GD) |
15777 | /* TLS_GD relocs need an 8-byte structure in the GOT. */ | |
15778 | s->size += 8; | |
0855e32b NS |
15779 | if (*local_tls_type & GOT_TLS_GDESC) |
15780 | { | |
15781 | *local_tlsdesc_gotent = htab->root.sgotplt->size | |
15782 | - elf32_arm_compute_jump_table_size (htab); | |
15783 | htab->root.sgotplt->size += 8; | |
15784 | *local_got = (bfd_vma) -2; | |
34e77a92 | 15785 | /* plt.got_offset needs to know there's a TLS_DESC |
0855e32b | 15786 | reloc in the middle of .got.plt. */ |
99059e56 | 15787 | htab->num_tls_desc++; |
0855e32b | 15788 | } |
ba93b8ac DJ |
15789 | if (*local_tls_type & GOT_TLS_IE) |
15790 | s->size += 4; | |
ba93b8ac | 15791 | |
0855e32b NS |
15792 | if (*local_tls_type & GOT_NORMAL) |
15793 | { | |
15794 | /* If the symbol is both GD and GDESC, *local_got | |
15795 | may have been overwritten. */ | |
15796 | *local_got = s->size; | |
15797 | s->size += 4; | |
15798 | } | |
15799 | ||
34e77a92 RS |
15800 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, symndx); |
15801 | if (isym == NULL) | |
15802 | return FALSE; | |
15803 | ||
15804 | /* If all references to an STT_GNU_IFUNC PLT are calls, | |
15805 | then all non-call references, including this GOT entry, | |
15806 | resolve directly to the run-time target. */ | |
15807 | if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC | |
15808 | && (local_iplt == NULL | |
15809 | || local_iplt->arm.noncall_refcount == 0)) | |
15810 | elf32_arm_allocate_irelocs (info, srel, 1); | |
0e1862bb | 15811 | else if (bfd_link_pic (info) || output_bfd->flags & DYNAMIC) |
0855e32b | 15812 | { |
0e1862bb | 15813 | if ((bfd_link_pic (info) && !(*local_tls_type & GOT_TLS_GDESC)) |
3064e1ff JB |
15814 | || *local_tls_type & GOT_TLS_GD) |
15815 | elf32_arm_allocate_dynrelocs (info, srel, 1); | |
99059e56 | 15816 | |
0e1862bb | 15817 | if (bfd_link_pic (info) && *local_tls_type & GOT_TLS_GDESC) |
3064e1ff JB |
15818 | { |
15819 | elf32_arm_allocate_dynrelocs (info, | |
15820 | htab->root.srelplt, 1); | |
15821 | htab->tls_trampoline = -1; | |
15822 | } | |
0855e32b | 15823 | } |
5e681ec4 PB |
15824 | } |
15825 | else | |
15826 | *local_got = (bfd_vma) -1; | |
15827 | } | |
252b5132 RH |
15828 | } |
15829 | ||
ba93b8ac DJ |
15830 | if (htab->tls_ldm_got.refcount > 0) |
15831 | { | |
15832 | /* Allocate two GOT entries and one dynamic relocation (if necessary) | |
15833 | for R_ARM_TLS_LDM32 relocations. */ | |
362d30a1 RS |
15834 | htab->tls_ldm_got.offset = htab->root.sgot->size; |
15835 | htab->root.sgot->size += 8; | |
0e1862bb | 15836 | if (bfd_link_pic (info)) |
47beaa6a | 15837 | elf32_arm_allocate_dynrelocs (info, htab->root.srelgot, 1); |
ba93b8ac DJ |
15838 | } |
15839 | else | |
15840 | htab->tls_ldm_got.offset = -1; | |
15841 | ||
5e681ec4 PB |
15842 | /* Allocate global sym .plt and .got entries, and space for global |
15843 | sym dynamic relocs. */ | |
47beaa6a | 15844 | elf_link_hash_traverse (& htab->root, allocate_dynrelocs_for_symbol, info); |
252b5132 | 15845 | |
d504ffc8 | 15846 | /* Here we rummage through the found bfds to collect glue information. */ |
c72f2fb2 | 15847 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
c7b8f16e | 15848 | { |
0ffa91dd | 15849 | if (! is_arm_elf (ibfd)) |
e44a2c9c AM |
15850 | continue; |
15851 | ||
c7b8f16e JB |
15852 | /* Initialise mapping tables for code/data. */ |
15853 | bfd_elf32_arm_init_maps (ibfd); | |
906e58ca | 15854 | |
c7b8f16e | 15855 | if (!bfd_elf32_arm_process_before_allocation (ibfd, info) |
a504d23a LA |
15856 | || !bfd_elf32_arm_vfp11_erratum_scan (ibfd, info) |
15857 | || !bfd_elf32_arm_stm32l4xx_erratum_scan (ibfd, info)) | |
99059e56 RM |
15858 | /* xgettext:c-format */ |
15859 | _bfd_error_handler (_("Errors encountered processing file %s"), | |
c7b8f16e JB |
15860 | ibfd->filename); |
15861 | } | |
d504ffc8 | 15862 | |
3e6b1042 DJ |
15863 | /* Allocate space for the glue sections now that we've sized them. */ |
15864 | bfd_elf32_arm_allocate_interworking_sections (info); | |
15865 | ||
0855e32b NS |
15866 | /* For every jump slot reserved in the sgotplt, reloc_count is |
15867 | incremented. However, when we reserve space for TLS descriptors, | |
15868 | it's not incremented, so in order to compute the space reserved | |
15869 | for them, it suffices to multiply the reloc count by the jump | |
15870 | slot size. */ | |
15871 | if (htab->root.srelplt) | |
15872 | htab->sgotplt_jump_table_size = elf32_arm_compute_jump_table_size(htab); | |
15873 | ||
15874 | if (htab->tls_trampoline) | |
15875 | { | |
15876 | if (htab->root.splt->size == 0) | |
15877 | htab->root.splt->size += htab->plt_header_size; | |
b38cadfb | 15878 | |
0855e32b NS |
15879 | htab->tls_trampoline = htab->root.splt->size; |
15880 | htab->root.splt->size += htab->plt_entry_size; | |
b38cadfb | 15881 | |
0855e32b | 15882 | /* If we're not using lazy TLS relocations, don't generate the |
99059e56 | 15883 | PLT and GOT entries they require. */ |
0855e32b NS |
15884 | if (!(info->flags & DF_BIND_NOW)) |
15885 | { | |
15886 | htab->dt_tlsdesc_got = htab->root.sgot->size; | |
15887 | htab->root.sgot->size += 4; | |
15888 | ||
15889 | htab->dt_tlsdesc_plt = htab->root.splt->size; | |
15890 | htab->root.splt->size += 4 * ARRAY_SIZE (dl_tlsdesc_lazy_trampoline); | |
15891 | } | |
15892 | } | |
15893 | ||
252b5132 RH |
15894 | /* The check_relocs and adjust_dynamic_symbol entry points have |
15895 | determined the sizes of the various dynamic sections. Allocate | |
15896 | memory for them. */ | |
b34976b6 AM |
15897 | plt = FALSE; |
15898 | relocs = FALSE; | |
252b5132 RH |
15899 | for (s = dynobj->sections; s != NULL; s = s->next) |
15900 | { | |
15901 | const char * name; | |
252b5132 RH |
15902 | |
15903 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
15904 | continue; | |
15905 | ||
15906 | /* It's OK to base decisions on the section name, because none | |
15907 | of the dynobj section names depend upon the input files. */ | |
15908 | name = bfd_get_section_name (dynobj, s); | |
15909 | ||
34e77a92 | 15910 | if (s == htab->root.splt) |
252b5132 | 15911 | { |
c456f082 AM |
15912 | /* Remember whether there is a PLT. */ |
15913 | plt = s->size != 0; | |
252b5132 | 15914 | } |
0112cd26 | 15915 | else if (CONST_STRNEQ (name, ".rel")) |
252b5132 | 15916 | { |
c456f082 | 15917 | if (s->size != 0) |
252b5132 | 15918 | { |
252b5132 | 15919 | /* Remember whether there are any reloc sections other |
00a97672 | 15920 | than .rel(a).plt and .rela.plt.unloaded. */ |
362d30a1 | 15921 | if (s != htab->root.srelplt && s != htab->srelplt2) |
b34976b6 | 15922 | relocs = TRUE; |
252b5132 RH |
15923 | |
15924 | /* We use the reloc_count field as a counter if we need | |
15925 | to copy relocs into the output file. */ | |
15926 | s->reloc_count = 0; | |
15927 | } | |
15928 | } | |
34e77a92 RS |
15929 | else if (s != htab->root.sgot |
15930 | && s != htab->root.sgotplt | |
15931 | && s != htab->root.iplt | |
15932 | && s != htab->root.igotplt | |
15933 | && s != htab->sdynbss) | |
252b5132 RH |
15934 | { |
15935 | /* It's not one of our sections, so don't allocate space. */ | |
15936 | continue; | |
15937 | } | |
15938 | ||
c456f082 | 15939 | if (s->size == 0) |
252b5132 | 15940 | { |
c456f082 | 15941 | /* If we don't need this section, strip it from the |
00a97672 RS |
15942 | output file. This is mostly to handle .rel(a).bss and |
15943 | .rel(a).plt. We must create both sections in | |
c456f082 AM |
15944 | create_dynamic_sections, because they must be created |
15945 | before the linker maps input sections to output | |
15946 | sections. The linker does that before | |
15947 | adjust_dynamic_symbol is called, and it is that | |
15948 | function which decides whether anything needs to go | |
15949 | into these sections. */ | |
8423293d | 15950 | s->flags |= SEC_EXCLUDE; |
252b5132 RH |
15951 | continue; |
15952 | } | |
15953 | ||
c456f082 AM |
15954 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
15955 | continue; | |
15956 | ||
252b5132 | 15957 | /* Allocate memory for the section contents. */ |
21d799b5 | 15958 | s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size); |
c456f082 | 15959 | if (s->contents == NULL) |
b34976b6 | 15960 | return FALSE; |
252b5132 RH |
15961 | } |
15962 | ||
15963 | if (elf_hash_table (info)->dynamic_sections_created) | |
15964 | { | |
15965 | /* Add some entries to the .dynamic section. We fill in the | |
15966 | values later, in elf32_arm_finish_dynamic_sections, but we | |
15967 | must add the entries now so that we get the correct size for | |
15968 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
15969 | dynamic linker and used by the debugger. */ | |
dc810e39 | 15970 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 15971 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 15972 | |
0e1862bb | 15973 | if (bfd_link_executable (info)) |
252b5132 | 15974 | { |
dc810e39 | 15975 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 15976 | return FALSE; |
252b5132 RH |
15977 | } |
15978 | ||
15979 | if (plt) | |
15980 | { | |
dc810e39 AM |
15981 | if ( !add_dynamic_entry (DT_PLTGOT, 0) |
15982 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
00a97672 RS |
15983 | || !add_dynamic_entry (DT_PLTREL, |
15984 | htab->use_rel ? DT_REL : DT_RELA) | |
dc810e39 | 15985 | || !add_dynamic_entry (DT_JMPREL, 0)) |
b34976b6 | 15986 | return FALSE; |
0855e32b | 15987 | |
5025eb7c AO |
15988 | if (htab->dt_tlsdesc_plt |
15989 | && (!add_dynamic_entry (DT_TLSDESC_PLT,0) | |
15990 | || !add_dynamic_entry (DT_TLSDESC_GOT,0))) | |
b38cadfb | 15991 | return FALSE; |
252b5132 RH |
15992 | } |
15993 | ||
15994 | if (relocs) | |
15995 | { | |
00a97672 RS |
15996 | if (htab->use_rel) |
15997 | { | |
15998 | if (!add_dynamic_entry (DT_REL, 0) | |
15999 | || !add_dynamic_entry (DT_RELSZ, 0) | |
16000 | || !add_dynamic_entry (DT_RELENT, RELOC_SIZE (htab))) | |
16001 | return FALSE; | |
16002 | } | |
16003 | else | |
16004 | { | |
16005 | if (!add_dynamic_entry (DT_RELA, 0) | |
16006 | || !add_dynamic_entry (DT_RELASZ, 0) | |
16007 | || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab))) | |
16008 | return FALSE; | |
16009 | } | |
252b5132 RH |
16010 | } |
16011 | ||
08d1f311 DJ |
16012 | /* If any dynamic relocs apply to a read-only section, |
16013 | then we need a DT_TEXTREL entry. */ | |
16014 | if ((info->flags & DF_TEXTREL) == 0) | |
8029a119 NC |
16015 | elf_link_hash_traverse (& htab->root, elf32_arm_readonly_dynrelocs, |
16016 | info); | |
08d1f311 | 16017 | |
99e4ae17 | 16018 | if ((info->flags & DF_TEXTREL) != 0) |
252b5132 | 16019 | { |
dc810e39 | 16020 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 16021 | return FALSE; |
252b5132 | 16022 | } |
7a2b07ff NS |
16023 | if (htab->vxworks_p |
16024 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) | |
16025 | return FALSE; | |
252b5132 | 16026 | } |
8532796c | 16027 | #undef add_dynamic_entry |
252b5132 | 16028 | |
b34976b6 | 16029 | return TRUE; |
252b5132 RH |
16030 | } |
16031 | ||
0855e32b NS |
16032 | /* Size sections even though they're not dynamic. We use it to setup |
16033 | _TLS_MODULE_BASE_, if needed. */ | |
16034 | ||
16035 | static bfd_boolean | |
16036 | elf32_arm_always_size_sections (bfd *output_bfd, | |
99059e56 | 16037 | struct bfd_link_info *info) |
0855e32b NS |
16038 | { |
16039 | asection *tls_sec; | |
16040 | ||
0e1862bb | 16041 | if (bfd_link_relocatable (info)) |
0855e32b NS |
16042 | return TRUE; |
16043 | ||
16044 | tls_sec = elf_hash_table (info)->tls_sec; | |
16045 | ||
16046 | if (tls_sec) | |
16047 | { | |
16048 | struct elf_link_hash_entry *tlsbase; | |
16049 | ||
16050 | tlsbase = elf_link_hash_lookup | |
16051 | (elf_hash_table (info), "_TLS_MODULE_BASE_", TRUE, TRUE, FALSE); | |
16052 | ||
16053 | if (tlsbase) | |
99059e56 RM |
16054 | { |
16055 | struct bfd_link_hash_entry *bh = NULL; | |
0855e32b | 16056 | const struct elf_backend_data *bed |
99059e56 | 16057 | = get_elf_backend_data (output_bfd); |
0855e32b | 16058 | |
99059e56 | 16059 | if (!(_bfd_generic_link_add_one_symbol |
0855e32b NS |
16060 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, |
16061 | tls_sec, 0, NULL, FALSE, | |
16062 | bed->collect, &bh))) | |
16063 | return FALSE; | |
b38cadfb | 16064 | |
99059e56 RM |
16065 | tlsbase->type = STT_TLS; |
16066 | tlsbase = (struct elf_link_hash_entry *)bh; | |
16067 | tlsbase->def_regular = 1; | |
16068 | tlsbase->other = STV_HIDDEN; | |
16069 | (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE); | |
0855e32b NS |
16070 | } |
16071 | } | |
16072 | return TRUE; | |
16073 | } | |
16074 | ||
252b5132 RH |
16075 | /* Finish up dynamic symbol handling. We set the contents of various |
16076 | dynamic sections here. */ | |
16077 | ||
b34976b6 | 16078 | static bfd_boolean |
906e58ca NC |
16079 | elf32_arm_finish_dynamic_symbol (bfd * output_bfd, |
16080 | struct bfd_link_info * info, | |
16081 | struct elf_link_hash_entry * h, | |
16082 | Elf_Internal_Sym * sym) | |
252b5132 | 16083 | { |
e5a52504 | 16084 | struct elf32_arm_link_hash_table *htab; |
b7693d02 | 16085 | struct elf32_arm_link_hash_entry *eh; |
252b5132 | 16086 | |
e5a52504 | 16087 | htab = elf32_arm_hash_table (info); |
4dfe6ac6 NC |
16088 | if (htab == NULL) |
16089 | return FALSE; | |
16090 | ||
b7693d02 | 16091 | eh = (struct elf32_arm_link_hash_entry *) h; |
252b5132 RH |
16092 | |
16093 | if (h->plt.offset != (bfd_vma) -1) | |
16094 | { | |
34e77a92 | 16095 | if (!eh->is_iplt) |
e5a52504 | 16096 | { |
34e77a92 | 16097 | BFD_ASSERT (h->dynindx != -1); |
57460bcf NC |
16098 | if (! elf32_arm_populate_plt_entry (output_bfd, info, &h->plt, &eh->plt, |
16099 | h->dynindx, 0)) | |
16100 | return FALSE; | |
e5a52504 | 16101 | } |
57e8b36a | 16102 | |
f5385ebf | 16103 | if (!h->def_regular) |
252b5132 RH |
16104 | { |
16105 | /* Mark the symbol as undefined, rather than as defined in | |
3a635617 | 16106 | the .plt section. */ |
252b5132 | 16107 | sym->st_shndx = SHN_UNDEF; |
3a635617 | 16108 | /* If the symbol is weak we need to clear the value. |
d982ba73 PB |
16109 | Otherwise, the PLT entry would provide a definition for |
16110 | the symbol even if the symbol wasn't defined anywhere, | |
3a635617 WN |
16111 | and so the symbol would never be NULL. Leave the value if |
16112 | there were any relocations where pointer equality matters | |
16113 | (this is a clue for the dynamic linker, to make function | |
16114 | pointer comparisons work between an application and shared | |
16115 | library). */ | |
97323ad1 | 16116 | if (!h->ref_regular_nonweak || !h->pointer_equality_needed) |
d982ba73 | 16117 | sym->st_value = 0; |
252b5132 | 16118 | } |
34e77a92 RS |
16119 | else if (eh->is_iplt && eh->plt.noncall_refcount != 0) |
16120 | { | |
16121 | /* At least one non-call relocation references this .iplt entry, | |
16122 | so the .iplt entry is the function's canonical address. */ | |
16123 | sym->st_info = ELF_ST_INFO (ELF_ST_BIND (sym->st_info), STT_FUNC); | |
39d911fc | 16124 | ARM_SET_SYM_BRANCH_TYPE (sym->st_target_internal, ST_BRANCH_TO_ARM); |
34e77a92 RS |
16125 | sym->st_shndx = (_bfd_elf_section_from_bfd_section |
16126 | (output_bfd, htab->root.iplt->output_section)); | |
16127 | sym->st_value = (h->plt.offset | |
16128 | + htab->root.iplt->output_section->vma | |
16129 | + htab->root.iplt->output_offset); | |
16130 | } | |
252b5132 RH |
16131 | } |
16132 | ||
f5385ebf | 16133 | if (h->needs_copy) |
252b5132 RH |
16134 | { |
16135 | asection * s; | |
947216bf | 16136 | Elf_Internal_Rela rel; |
252b5132 RH |
16137 | |
16138 | /* This symbol needs a copy reloc. Set it up. */ | |
252b5132 RH |
16139 | BFD_ASSERT (h->dynindx != -1 |
16140 | && (h->root.type == bfd_link_hash_defined | |
16141 | || h->root.type == bfd_link_hash_defweak)); | |
16142 | ||
362d30a1 | 16143 | s = htab->srelbss; |
252b5132 RH |
16144 | BFD_ASSERT (s != NULL); |
16145 | ||
00a97672 | 16146 | rel.r_addend = 0; |
252b5132 RH |
16147 | rel.r_offset = (h->root.u.def.value |
16148 | + h->root.u.def.section->output_section->vma | |
16149 | + h->root.u.def.section->output_offset); | |
16150 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY); | |
47beaa6a | 16151 | elf32_arm_add_dynreloc (output_bfd, info, s, &rel); |
252b5132 RH |
16152 | } |
16153 | ||
00a97672 RS |
16154 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks, |
16155 | the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative | |
16156 | to the ".got" section. */ | |
9637f6ef | 16157 | if (h == htab->root.hdynamic |
00a97672 | 16158 | || (!htab->vxworks_p && h == htab->root.hgot)) |
252b5132 RH |
16159 | sym->st_shndx = SHN_ABS; |
16160 | ||
b34976b6 | 16161 | return TRUE; |
252b5132 RH |
16162 | } |
16163 | ||
0855e32b NS |
16164 | static void |
16165 | arm_put_trampoline (struct elf32_arm_link_hash_table *htab, bfd *output_bfd, | |
16166 | void *contents, | |
16167 | const unsigned long *template, unsigned count) | |
16168 | { | |
16169 | unsigned ix; | |
b38cadfb | 16170 | |
0855e32b NS |
16171 | for (ix = 0; ix != count; ix++) |
16172 | { | |
16173 | unsigned long insn = template[ix]; | |
16174 | ||
16175 | /* Emit mov pc,rx if bx is not permitted. */ | |
16176 | if (htab->fix_v4bx == 1 && (insn & 0x0ffffff0) == 0x012fff10) | |
16177 | insn = (insn & 0xf000000f) | 0x01a0f000; | |
16178 | put_arm_insn (htab, output_bfd, insn, (char *)contents + ix*4); | |
16179 | } | |
16180 | } | |
16181 | ||
99059e56 RM |
16182 | /* Install the special first PLT entry for elf32-arm-nacl. Unlike |
16183 | other variants, NaCl needs this entry in a static executable's | |
16184 | .iplt too. When we're handling that case, GOT_DISPLACEMENT is | |
16185 | zero. For .iplt really only the last bundle is useful, and .iplt | |
16186 | could have a shorter first entry, with each individual PLT entry's | |
16187 | relative branch calculated differently so it targets the last | |
16188 | bundle instead of the instruction before it (labelled .Lplt_tail | |
16189 | above). But it's simpler to keep the size and layout of PLT0 | |
16190 | consistent with the dynamic case, at the cost of some dead code at | |
16191 | the start of .iplt and the one dead store to the stack at the start | |
16192 | of .Lplt_tail. */ | |
16193 | static void | |
16194 | arm_nacl_put_plt0 (struct elf32_arm_link_hash_table *htab, bfd *output_bfd, | |
16195 | asection *plt, bfd_vma got_displacement) | |
16196 | { | |
16197 | unsigned int i; | |
16198 | ||
16199 | put_arm_insn (htab, output_bfd, | |
16200 | elf32_arm_nacl_plt0_entry[0] | |
16201 | | arm_movw_immediate (got_displacement), | |
16202 | plt->contents + 0); | |
16203 | put_arm_insn (htab, output_bfd, | |
16204 | elf32_arm_nacl_plt0_entry[1] | |
16205 | | arm_movt_immediate (got_displacement), | |
16206 | plt->contents + 4); | |
16207 | ||
16208 | for (i = 2; i < ARRAY_SIZE (elf32_arm_nacl_plt0_entry); ++i) | |
16209 | put_arm_insn (htab, output_bfd, | |
16210 | elf32_arm_nacl_plt0_entry[i], | |
16211 | plt->contents + (i * 4)); | |
16212 | } | |
16213 | ||
252b5132 RH |
16214 | /* Finish up the dynamic sections. */ |
16215 | ||
b34976b6 | 16216 | static bfd_boolean |
57e8b36a | 16217 | elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info) |
252b5132 RH |
16218 | { |
16219 | bfd * dynobj; | |
16220 | asection * sgot; | |
16221 | asection * sdyn; | |
4dfe6ac6 NC |
16222 | struct elf32_arm_link_hash_table *htab; |
16223 | ||
16224 | htab = elf32_arm_hash_table (info); | |
16225 | if (htab == NULL) | |
16226 | return FALSE; | |
252b5132 RH |
16227 | |
16228 | dynobj = elf_hash_table (info)->dynobj; | |
16229 | ||
362d30a1 | 16230 | sgot = htab->root.sgotplt; |
894891db NC |
16231 | /* A broken linker script might have discarded the dynamic sections. |
16232 | Catch this here so that we do not seg-fault later on. */ | |
16233 | if (sgot != NULL && bfd_is_abs_section (sgot->output_section)) | |
16234 | return FALSE; | |
3d4d4302 | 16235 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
252b5132 RH |
16236 | |
16237 | if (elf_hash_table (info)->dynamic_sections_created) | |
16238 | { | |
16239 | asection *splt; | |
16240 | Elf32_External_Dyn *dyncon, *dynconend; | |
16241 | ||
362d30a1 | 16242 | splt = htab->root.splt; |
24a1ba0f | 16243 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
cbc704f3 | 16244 | BFD_ASSERT (htab->symbian_p || sgot != NULL); |
252b5132 RH |
16245 | |
16246 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 16247 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
9b485d32 | 16248 | |
252b5132 RH |
16249 | for (; dyncon < dynconend; dyncon++) |
16250 | { | |
16251 | Elf_Internal_Dyn dyn; | |
16252 | const char * name; | |
16253 | asection * s; | |
16254 | ||
16255 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
16256 | ||
16257 | switch (dyn.d_tag) | |
16258 | { | |
229fcec5 MM |
16259 | unsigned int type; |
16260 | ||
252b5132 | 16261 | default: |
7a2b07ff NS |
16262 | if (htab->vxworks_p |
16263 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
16264 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
252b5132 RH |
16265 | break; |
16266 | ||
229fcec5 MM |
16267 | case DT_HASH: |
16268 | name = ".hash"; | |
16269 | goto get_vma_if_bpabi; | |
16270 | case DT_STRTAB: | |
16271 | name = ".dynstr"; | |
16272 | goto get_vma_if_bpabi; | |
16273 | case DT_SYMTAB: | |
16274 | name = ".dynsym"; | |
16275 | goto get_vma_if_bpabi; | |
c0042f5d MM |
16276 | case DT_VERSYM: |
16277 | name = ".gnu.version"; | |
16278 | goto get_vma_if_bpabi; | |
16279 | case DT_VERDEF: | |
16280 | name = ".gnu.version_d"; | |
16281 | goto get_vma_if_bpabi; | |
16282 | case DT_VERNEED: | |
16283 | name = ".gnu.version_r"; | |
16284 | goto get_vma_if_bpabi; | |
16285 | ||
252b5132 | 16286 | case DT_PLTGOT: |
4ade44b7 | 16287 | name = htab->symbian_p ? ".got" : ".got.plt"; |
252b5132 RH |
16288 | goto get_vma; |
16289 | case DT_JMPREL: | |
00a97672 | 16290 | name = RELOC_SECTION (htab, ".plt"); |
252b5132 | 16291 | get_vma: |
4ade44b7 | 16292 | s = bfd_get_linker_section (dynobj, name); |
05456594 NC |
16293 | if (s == NULL) |
16294 | { | |
05456594 | 16295 | (*_bfd_error_handler) |
4ade44b7 | 16296 | (_("could not find section %s"), name); |
05456594 NC |
16297 | bfd_set_error (bfd_error_invalid_operation); |
16298 | return FALSE; | |
16299 | } | |
229fcec5 | 16300 | if (!htab->symbian_p) |
4ade44b7 | 16301 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
229fcec5 MM |
16302 | else |
16303 | /* In the BPABI, tags in the PT_DYNAMIC section point | |
16304 | at the file offset, not the memory address, for the | |
16305 | convenience of the post linker. */ | |
4ade44b7 | 16306 | dyn.d_un.d_ptr = s->output_section->filepos + s->output_offset; |
252b5132 RH |
16307 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
16308 | break; | |
16309 | ||
229fcec5 MM |
16310 | get_vma_if_bpabi: |
16311 | if (htab->symbian_p) | |
16312 | goto get_vma; | |
16313 | break; | |
16314 | ||
252b5132 | 16315 | case DT_PLTRELSZ: |
362d30a1 | 16316 | s = htab->root.srelplt; |
252b5132 | 16317 | BFD_ASSERT (s != NULL); |
eea6121a | 16318 | dyn.d_un.d_val = s->size; |
252b5132 RH |
16319 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
16320 | break; | |
906e58ca | 16321 | |
252b5132 | 16322 | case DT_RELSZ: |
00a97672 | 16323 | case DT_RELASZ: |
229fcec5 MM |
16324 | if (!htab->symbian_p) |
16325 | { | |
16326 | /* My reading of the SVR4 ABI indicates that the | |
16327 | procedure linkage table relocs (DT_JMPREL) should be | |
16328 | included in the overall relocs (DT_REL). This is | |
16329 | what Solaris does. However, UnixWare can not handle | |
16330 | that case. Therefore, we override the DT_RELSZ entry | |
16331 | here to make it not include the JMPREL relocs. Since | |
00a97672 | 16332 | the linker script arranges for .rel(a).plt to follow all |
229fcec5 MM |
16333 | other relocation sections, we don't have to worry |
16334 | about changing the DT_REL entry. */ | |
362d30a1 | 16335 | s = htab->root.srelplt; |
229fcec5 MM |
16336 | if (s != NULL) |
16337 | dyn.d_un.d_val -= s->size; | |
16338 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
16339 | break; | |
16340 | } | |
8029a119 | 16341 | /* Fall through. */ |
229fcec5 MM |
16342 | |
16343 | case DT_REL: | |
16344 | case DT_RELA: | |
229fcec5 MM |
16345 | /* In the BPABI, the DT_REL tag must point at the file |
16346 | offset, not the VMA, of the first relocation | |
16347 | section. So, we use code similar to that in | |
16348 | elflink.c, but do not check for SHF_ALLOC on the | |
16349 | relcoation section, since relocations sections are | |
16350 | never allocated under the BPABI. The comments above | |
16351 | about Unixware notwithstanding, we include all of the | |
16352 | relocations here. */ | |
16353 | if (htab->symbian_p) | |
16354 | { | |
16355 | unsigned int i; | |
16356 | type = ((dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ) | |
16357 | ? SHT_REL : SHT_RELA); | |
16358 | dyn.d_un.d_val = 0; | |
16359 | for (i = 1; i < elf_numsections (output_bfd); i++) | |
16360 | { | |
906e58ca | 16361 | Elf_Internal_Shdr *hdr |
229fcec5 MM |
16362 | = elf_elfsections (output_bfd)[i]; |
16363 | if (hdr->sh_type == type) | |
16364 | { | |
906e58ca | 16365 | if (dyn.d_tag == DT_RELSZ |
229fcec5 MM |
16366 | || dyn.d_tag == DT_RELASZ) |
16367 | dyn.d_un.d_val += hdr->sh_size; | |
de52dba4 AM |
16368 | else if ((ufile_ptr) hdr->sh_offset |
16369 | <= dyn.d_un.d_val - 1) | |
229fcec5 MM |
16370 | dyn.d_un.d_val = hdr->sh_offset; |
16371 | } | |
16372 | } | |
16373 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
16374 | } | |
252b5132 | 16375 | break; |
88f7bcd5 | 16376 | |
0855e32b | 16377 | case DT_TLSDESC_PLT: |
99059e56 | 16378 | s = htab->root.splt; |
0855e32b NS |
16379 | dyn.d_un.d_ptr = (s->output_section->vma + s->output_offset |
16380 | + htab->dt_tlsdesc_plt); | |
16381 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
16382 | break; | |
16383 | ||
16384 | case DT_TLSDESC_GOT: | |
99059e56 | 16385 | s = htab->root.sgot; |
0855e32b | 16386 | dyn.d_un.d_ptr = (s->output_section->vma + s->output_offset |
99059e56 | 16387 | + htab->dt_tlsdesc_got); |
0855e32b NS |
16388 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
16389 | break; | |
16390 | ||
88f7bcd5 NC |
16391 | /* Set the bottom bit of DT_INIT/FINI if the |
16392 | corresponding function is Thumb. */ | |
16393 | case DT_INIT: | |
16394 | name = info->init_function; | |
16395 | goto get_sym; | |
16396 | case DT_FINI: | |
16397 | name = info->fini_function; | |
16398 | get_sym: | |
16399 | /* If it wasn't set by elf_bfd_final_link | |
4cc11e76 | 16400 | then there is nothing to adjust. */ |
88f7bcd5 NC |
16401 | if (dyn.d_un.d_val != 0) |
16402 | { | |
16403 | struct elf_link_hash_entry * eh; | |
16404 | ||
16405 | eh = elf_link_hash_lookup (elf_hash_table (info), name, | |
b34976b6 | 16406 | FALSE, FALSE, TRUE); |
39d911fc TP |
16407 | if (eh != NULL |
16408 | && ARM_GET_SYM_BRANCH_TYPE (eh->target_internal) | |
16409 | == ST_BRANCH_TO_THUMB) | |
88f7bcd5 NC |
16410 | { |
16411 | dyn.d_un.d_val |= 1; | |
b34976b6 | 16412 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
88f7bcd5 NC |
16413 | } |
16414 | } | |
16415 | break; | |
252b5132 RH |
16416 | } |
16417 | } | |
16418 | ||
24a1ba0f | 16419 | /* Fill in the first entry in the procedure linkage table. */ |
4dfe6ac6 | 16420 | if (splt->size > 0 && htab->plt_header_size) |
f7a74f8c | 16421 | { |
00a97672 RS |
16422 | const bfd_vma *plt0_entry; |
16423 | bfd_vma got_address, plt_address, got_displacement; | |
16424 | ||
16425 | /* Calculate the addresses of the GOT and PLT. */ | |
16426 | got_address = sgot->output_section->vma + sgot->output_offset; | |
16427 | plt_address = splt->output_section->vma + splt->output_offset; | |
16428 | ||
16429 | if (htab->vxworks_p) | |
16430 | { | |
16431 | /* The VxWorks GOT is relocated by the dynamic linker. | |
16432 | Therefore, we must emit relocations rather than simply | |
16433 | computing the values now. */ | |
16434 | Elf_Internal_Rela rel; | |
16435 | ||
16436 | plt0_entry = elf32_arm_vxworks_exec_plt0_entry; | |
52ab56c2 PB |
16437 | put_arm_insn (htab, output_bfd, plt0_entry[0], |
16438 | splt->contents + 0); | |
16439 | put_arm_insn (htab, output_bfd, plt0_entry[1], | |
16440 | splt->contents + 4); | |
16441 | put_arm_insn (htab, output_bfd, plt0_entry[2], | |
16442 | splt->contents + 8); | |
00a97672 RS |
16443 | bfd_put_32 (output_bfd, got_address, splt->contents + 12); |
16444 | ||
8029a119 | 16445 | /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */ |
00a97672 RS |
16446 | rel.r_offset = plt_address + 12; |
16447 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); | |
16448 | rel.r_addend = 0; | |
16449 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, | |
16450 | htab->srelplt2->contents); | |
16451 | } | |
b38cadfb | 16452 | else if (htab->nacl_p) |
99059e56 RM |
16453 | arm_nacl_put_plt0 (htab, output_bfd, splt, |
16454 | got_address + 8 - (plt_address + 16)); | |
eed94f8f NC |
16455 | else if (using_thumb_only (htab)) |
16456 | { | |
16457 | got_displacement = got_address - (plt_address + 12); | |
16458 | ||
16459 | plt0_entry = elf32_thumb2_plt0_entry; | |
16460 | put_arm_insn (htab, output_bfd, plt0_entry[0], | |
16461 | splt->contents + 0); | |
16462 | put_arm_insn (htab, output_bfd, plt0_entry[1], | |
16463 | splt->contents + 4); | |
16464 | put_arm_insn (htab, output_bfd, plt0_entry[2], | |
16465 | splt->contents + 8); | |
16466 | ||
16467 | bfd_put_32 (output_bfd, got_displacement, splt->contents + 12); | |
16468 | } | |
00a97672 RS |
16469 | else |
16470 | { | |
16471 | got_displacement = got_address - (plt_address + 16); | |
16472 | ||
16473 | plt0_entry = elf32_arm_plt0_entry; | |
52ab56c2 PB |
16474 | put_arm_insn (htab, output_bfd, plt0_entry[0], |
16475 | splt->contents + 0); | |
16476 | put_arm_insn (htab, output_bfd, plt0_entry[1], | |
16477 | splt->contents + 4); | |
16478 | put_arm_insn (htab, output_bfd, plt0_entry[2], | |
16479 | splt->contents + 8); | |
16480 | put_arm_insn (htab, output_bfd, plt0_entry[3], | |
16481 | splt->contents + 12); | |
5e681ec4 | 16482 | |
5e681ec4 | 16483 | #ifdef FOUR_WORD_PLT |
00a97672 RS |
16484 | /* The displacement value goes in the otherwise-unused |
16485 | last word of the second entry. */ | |
16486 | bfd_put_32 (output_bfd, got_displacement, splt->contents + 28); | |
5e681ec4 | 16487 | #else |
00a97672 | 16488 | bfd_put_32 (output_bfd, got_displacement, splt->contents + 16); |
5e681ec4 | 16489 | #endif |
00a97672 | 16490 | } |
f7a74f8c | 16491 | } |
252b5132 RH |
16492 | |
16493 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
16494 | really seem like the right value. */ | |
74541ad4 AM |
16495 | if (splt->output_section->owner == output_bfd) |
16496 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; | |
00a97672 | 16497 | |
0855e32b NS |
16498 | if (htab->dt_tlsdesc_plt) |
16499 | { | |
16500 | bfd_vma got_address | |
16501 | = sgot->output_section->vma + sgot->output_offset; | |
16502 | bfd_vma gotplt_address = (htab->root.sgot->output_section->vma | |
16503 | + htab->root.sgot->output_offset); | |
16504 | bfd_vma plt_address | |
16505 | = splt->output_section->vma + splt->output_offset; | |
16506 | ||
b38cadfb | 16507 | arm_put_trampoline (htab, output_bfd, |
0855e32b NS |
16508 | splt->contents + htab->dt_tlsdesc_plt, |
16509 | dl_tlsdesc_lazy_trampoline, 6); | |
16510 | ||
16511 | bfd_put_32 (output_bfd, | |
16512 | gotplt_address + htab->dt_tlsdesc_got | |
16513 | - (plt_address + htab->dt_tlsdesc_plt) | |
16514 | - dl_tlsdesc_lazy_trampoline[6], | |
16515 | splt->contents + htab->dt_tlsdesc_plt + 24); | |
16516 | bfd_put_32 (output_bfd, | |
16517 | got_address - (plt_address + htab->dt_tlsdesc_plt) | |
16518 | - dl_tlsdesc_lazy_trampoline[7], | |
16519 | splt->contents + htab->dt_tlsdesc_plt + 24 + 4); | |
16520 | } | |
16521 | ||
16522 | if (htab->tls_trampoline) | |
16523 | { | |
b38cadfb | 16524 | arm_put_trampoline (htab, output_bfd, |
0855e32b NS |
16525 | splt->contents + htab->tls_trampoline, |
16526 | tls_trampoline, 3); | |
16527 | #ifdef FOUR_WORD_PLT | |
16528 | bfd_put_32 (output_bfd, 0x00000000, | |
16529 | splt->contents + htab->tls_trampoline + 12); | |
b38cadfb | 16530 | #endif |
0855e32b NS |
16531 | } |
16532 | ||
0e1862bb L |
16533 | if (htab->vxworks_p |
16534 | && !bfd_link_pic (info) | |
16535 | && htab->root.splt->size > 0) | |
00a97672 RS |
16536 | { |
16537 | /* Correct the .rel(a).plt.unloaded relocations. They will have | |
16538 | incorrect symbol indexes. */ | |
16539 | int num_plts; | |
eed62c48 | 16540 | unsigned char *p; |
00a97672 | 16541 | |
362d30a1 | 16542 | num_plts = ((htab->root.splt->size - htab->plt_header_size) |
00a97672 RS |
16543 | / htab->plt_entry_size); |
16544 | p = htab->srelplt2->contents + RELOC_SIZE (htab); | |
16545 | ||
16546 | for (; num_plts; num_plts--) | |
16547 | { | |
16548 | Elf_Internal_Rela rel; | |
16549 | ||
16550 | SWAP_RELOC_IN (htab) (output_bfd, p, &rel); | |
16551 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); | |
16552 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, p); | |
16553 | p += RELOC_SIZE (htab); | |
16554 | ||
16555 | SWAP_RELOC_IN (htab) (output_bfd, p, &rel); | |
16556 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32); | |
16557 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, p); | |
16558 | p += RELOC_SIZE (htab); | |
16559 | } | |
16560 | } | |
252b5132 RH |
16561 | } |
16562 | ||
99059e56 RM |
16563 | if (htab->nacl_p && htab->root.iplt != NULL && htab->root.iplt->size > 0) |
16564 | /* NaCl uses a special first entry in .iplt too. */ | |
16565 | arm_nacl_put_plt0 (htab, output_bfd, htab->root.iplt, 0); | |
16566 | ||
252b5132 | 16567 | /* Fill in the first three entries in the global offset table. */ |
229fcec5 | 16568 | if (sgot) |
252b5132 | 16569 | { |
229fcec5 MM |
16570 | if (sgot->size > 0) |
16571 | { | |
16572 | if (sdyn == NULL) | |
16573 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
16574 | else | |
16575 | bfd_put_32 (output_bfd, | |
16576 | sdyn->output_section->vma + sdyn->output_offset, | |
16577 | sgot->contents); | |
16578 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
16579 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
16580 | } | |
252b5132 | 16581 | |
229fcec5 MM |
16582 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; |
16583 | } | |
252b5132 | 16584 | |
b34976b6 | 16585 | return TRUE; |
252b5132 RH |
16586 | } |
16587 | ||
ba96a88f | 16588 | static void |
57e8b36a | 16589 | elf32_arm_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED) |
ba96a88f | 16590 | { |
9b485d32 | 16591 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ |
e489d0ae | 16592 | struct elf32_arm_link_hash_table *globals; |
ac4c9b04 | 16593 | struct elf_segment_map *m; |
ba96a88f NC |
16594 | |
16595 | i_ehdrp = elf_elfheader (abfd); | |
16596 | ||
94a3258f PB |
16597 | if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_UNKNOWN) |
16598 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_ARM; | |
16599 | else | |
7394f108 | 16600 | _bfd_elf_post_process_headers (abfd, link_info); |
ba96a88f | 16601 | i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION; |
e489d0ae | 16602 | |
93204d3a PB |
16603 | if (link_info) |
16604 | { | |
16605 | globals = elf32_arm_hash_table (link_info); | |
4dfe6ac6 | 16606 | if (globals != NULL && globals->byteswap_code) |
93204d3a PB |
16607 | i_ehdrp->e_flags |= EF_ARM_BE8; |
16608 | } | |
3bfcb652 NC |
16609 | |
16610 | if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_VER5 | |
16611 | && ((i_ehdrp->e_type == ET_DYN) || (i_ehdrp->e_type == ET_EXEC))) | |
16612 | { | |
16613 | int abi = bfd_elf_get_obj_attr_int (abfd, OBJ_ATTR_PROC, Tag_ABI_VFP_args); | |
5c294fee | 16614 | if (abi == AEABI_VFP_args_vfp) |
3bfcb652 NC |
16615 | i_ehdrp->e_flags |= EF_ARM_ABI_FLOAT_HARD; |
16616 | else | |
16617 | i_ehdrp->e_flags |= EF_ARM_ABI_FLOAT_SOFT; | |
16618 | } | |
ac4c9b04 MG |
16619 | |
16620 | /* Scan segment to set p_flags attribute if it contains only sections with | |
f0728ee3 | 16621 | SHF_ARM_PURECODE flag. */ |
ac4c9b04 MG |
16622 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
16623 | { | |
16624 | unsigned int j; | |
16625 | ||
16626 | if (m->count == 0) | |
16627 | continue; | |
16628 | for (j = 0; j < m->count; j++) | |
16629 | { | |
f0728ee3 | 16630 | if (!(elf_section_flags (m->sections[j]) & SHF_ARM_PURECODE)) |
ac4c9b04 MG |
16631 | break; |
16632 | } | |
16633 | if (j == m->count) | |
16634 | { | |
16635 | m->p_flags = PF_X; | |
16636 | m->p_flags_valid = 1; | |
16637 | } | |
16638 | } | |
ba96a88f NC |
16639 | } |
16640 | ||
99e4ae17 | 16641 | static enum elf_reloc_type_class |
7e612e98 AM |
16642 | elf32_arm_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
16643 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
16644 | const Elf_Internal_Rela *rela) | |
99e4ae17 | 16645 | { |
f51e552e | 16646 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
99e4ae17 AJ |
16647 | { |
16648 | case R_ARM_RELATIVE: | |
16649 | return reloc_class_relative; | |
16650 | case R_ARM_JUMP_SLOT: | |
16651 | return reloc_class_plt; | |
16652 | case R_ARM_COPY: | |
16653 | return reloc_class_copy; | |
109575d7 JW |
16654 | case R_ARM_IRELATIVE: |
16655 | return reloc_class_ifunc; | |
99e4ae17 AJ |
16656 | default: |
16657 | return reloc_class_normal; | |
16658 | } | |
16659 | } | |
16660 | ||
e489d0ae | 16661 | static void |
57e8b36a | 16662 | elf32_arm_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) |
e16bb312 | 16663 | { |
5a6c6817 | 16664 | bfd_arm_update_notes (abfd, ARM_NOTE_SECTION); |
e16bb312 NC |
16665 | } |
16666 | ||
40a18ebd NC |
16667 | /* Return TRUE if this is an unwinding table entry. */ |
16668 | ||
16669 | static bfd_boolean | |
16670 | is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name) | |
16671 | { | |
0112cd26 NC |
16672 | return (CONST_STRNEQ (name, ELF_STRING_ARM_unwind) |
16673 | || CONST_STRNEQ (name, ELF_STRING_ARM_unwind_once)); | |
40a18ebd NC |
16674 | } |
16675 | ||
16676 | ||
16677 | /* Set the type and flags for an ARM section. We do this by | |
16678 | the section name, which is a hack, but ought to work. */ | |
16679 | ||
16680 | static bfd_boolean | |
16681 | elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec) | |
16682 | { | |
16683 | const char * name; | |
16684 | ||
16685 | name = bfd_get_section_name (abfd, sec); | |
16686 | ||
16687 | if (is_arm_elf_unwind_section_name (abfd, name)) | |
16688 | { | |
16689 | hdr->sh_type = SHT_ARM_EXIDX; | |
16690 | hdr->sh_flags |= SHF_LINK_ORDER; | |
16691 | } | |
ac4c9b04 | 16692 | |
f0728ee3 AV |
16693 | if (sec->flags & SEC_ELF_PURECODE) |
16694 | hdr->sh_flags |= SHF_ARM_PURECODE; | |
ac4c9b04 | 16695 | |
40a18ebd NC |
16696 | return TRUE; |
16697 | } | |
16698 | ||
6dc132d9 L |
16699 | /* Handle an ARM specific section when reading an object file. This is |
16700 | called when bfd_section_from_shdr finds a section with an unknown | |
16701 | type. */ | |
40a18ebd NC |
16702 | |
16703 | static bfd_boolean | |
16704 | elf32_arm_section_from_shdr (bfd *abfd, | |
16705 | Elf_Internal_Shdr * hdr, | |
6dc132d9 L |
16706 | const char *name, |
16707 | int shindex) | |
40a18ebd NC |
16708 | { |
16709 | /* There ought to be a place to keep ELF backend specific flags, but | |
16710 | at the moment there isn't one. We just keep track of the | |
16711 | sections by their name, instead. Fortunately, the ABI gives | |
16712 | names for all the ARM specific sections, so we will probably get | |
16713 | away with this. */ | |
16714 | switch (hdr->sh_type) | |
16715 | { | |
16716 | case SHT_ARM_EXIDX: | |
0951f019 RE |
16717 | case SHT_ARM_PREEMPTMAP: |
16718 | case SHT_ARM_ATTRIBUTES: | |
40a18ebd NC |
16719 | break; |
16720 | ||
16721 | default: | |
16722 | return FALSE; | |
16723 | } | |
16724 | ||
6dc132d9 | 16725 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
40a18ebd NC |
16726 | return FALSE; |
16727 | ||
16728 | return TRUE; | |
16729 | } | |
e489d0ae | 16730 | |
44444f50 NC |
16731 | static _arm_elf_section_data * |
16732 | get_arm_elf_section_data (asection * sec) | |
16733 | { | |
47b2e99c JZ |
16734 | if (sec && sec->owner && is_arm_elf (sec->owner)) |
16735 | return elf32_arm_section_data (sec); | |
44444f50 NC |
16736 | else |
16737 | return NULL; | |
8e3de13a NC |
16738 | } |
16739 | ||
4e617b1e PB |
16740 | typedef struct |
16741 | { | |
57402f1e | 16742 | void *flaginfo; |
4e617b1e | 16743 | struct bfd_link_info *info; |
91a5743d PB |
16744 | asection *sec; |
16745 | int sec_shndx; | |
6e0b88f1 AM |
16746 | int (*func) (void *, const char *, Elf_Internal_Sym *, |
16747 | asection *, struct elf_link_hash_entry *); | |
4e617b1e PB |
16748 | } output_arch_syminfo; |
16749 | ||
16750 | enum map_symbol_type | |
16751 | { | |
16752 | ARM_MAP_ARM, | |
16753 | ARM_MAP_THUMB, | |
16754 | ARM_MAP_DATA | |
16755 | }; | |
16756 | ||
16757 | ||
7413f23f | 16758 | /* Output a single mapping symbol. */ |
4e617b1e PB |
16759 | |
16760 | static bfd_boolean | |
7413f23f DJ |
16761 | elf32_arm_output_map_sym (output_arch_syminfo *osi, |
16762 | enum map_symbol_type type, | |
16763 | bfd_vma offset) | |
4e617b1e PB |
16764 | { |
16765 | static const char *names[3] = {"$a", "$t", "$d"}; | |
4e617b1e PB |
16766 | Elf_Internal_Sym sym; |
16767 | ||
91a5743d PB |
16768 | sym.st_value = osi->sec->output_section->vma |
16769 | + osi->sec->output_offset | |
16770 | + offset; | |
4e617b1e PB |
16771 | sym.st_size = 0; |
16772 | sym.st_other = 0; | |
16773 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
91a5743d | 16774 | sym.st_shndx = osi->sec_shndx; |
35fc36a8 | 16775 | sym.st_target_internal = 0; |
fe33d2fa | 16776 | elf32_arm_section_map_add (osi->sec, names[type][1], offset); |
57402f1e | 16777 | return osi->func (osi->flaginfo, names[type], &sym, osi->sec, NULL) == 1; |
4e617b1e PB |
16778 | } |
16779 | ||
34e77a92 RS |
16780 | /* Output mapping symbols for the PLT entry described by ROOT_PLT and ARM_PLT. |
16781 | IS_IPLT_ENTRY_P says whether the PLT is in .iplt rather than .plt. */ | |
4e617b1e PB |
16782 | |
16783 | static bfd_boolean | |
34e77a92 RS |
16784 | elf32_arm_output_plt_map_1 (output_arch_syminfo *osi, |
16785 | bfd_boolean is_iplt_entry_p, | |
16786 | union gotplt_union *root_plt, | |
16787 | struct arm_plt_info *arm_plt) | |
4e617b1e | 16788 | { |
4e617b1e | 16789 | struct elf32_arm_link_hash_table *htab; |
34e77a92 | 16790 | bfd_vma addr, plt_header_size; |
4e617b1e | 16791 | |
34e77a92 | 16792 | if (root_plt->offset == (bfd_vma) -1) |
4e617b1e PB |
16793 | return TRUE; |
16794 | ||
4dfe6ac6 NC |
16795 | htab = elf32_arm_hash_table (osi->info); |
16796 | if (htab == NULL) | |
16797 | return FALSE; | |
16798 | ||
34e77a92 RS |
16799 | if (is_iplt_entry_p) |
16800 | { | |
16801 | osi->sec = htab->root.iplt; | |
16802 | plt_header_size = 0; | |
16803 | } | |
16804 | else | |
16805 | { | |
16806 | osi->sec = htab->root.splt; | |
16807 | plt_header_size = htab->plt_header_size; | |
16808 | } | |
16809 | osi->sec_shndx = (_bfd_elf_section_from_bfd_section | |
16810 | (osi->info->output_bfd, osi->sec->output_section)); | |
16811 | ||
16812 | addr = root_plt->offset & -2; | |
4e617b1e PB |
16813 | if (htab->symbian_p) |
16814 | { | |
7413f23f | 16815 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr)) |
4e617b1e | 16816 | return FALSE; |
7413f23f | 16817 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 4)) |
4e617b1e PB |
16818 | return FALSE; |
16819 | } | |
16820 | else if (htab->vxworks_p) | |
16821 | { | |
7413f23f | 16822 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr)) |
4e617b1e | 16823 | return FALSE; |
7413f23f | 16824 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 8)) |
4e617b1e | 16825 | return FALSE; |
7413f23f | 16826 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr + 12)) |
4e617b1e | 16827 | return FALSE; |
7413f23f | 16828 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 20)) |
4e617b1e PB |
16829 | return FALSE; |
16830 | } | |
b38cadfb NC |
16831 | else if (htab->nacl_p) |
16832 | { | |
16833 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr)) | |
16834 | return FALSE; | |
16835 | } | |
eed94f8f NC |
16836 | else if (using_thumb_only (htab)) |
16837 | { | |
16838 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_THUMB, addr)) | |
16839 | return FALSE; | |
6a631e86 | 16840 | } |
4e617b1e PB |
16841 | else |
16842 | { | |
34e77a92 | 16843 | bfd_boolean thumb_stub_p; |
bd97cb95 | 16844 | |
34e77a92 RS |
16845 | thumb_stub_p = elf32_arm_plt_needs_thumb_stub_p (osi->info, arm_plt); |
16846 | if (thumb_stub_p) | |
4e617b1e | 16847 | { |
7413f23f | 16848 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_THUMB, addr - 4)) |
4e617b1e PB |
16849 | return FALSE; |
16850 | } | |
16851 | #ifdef FOUR_WORD_PLT | |
7413f23f | 16852 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr)) |
4e617b1e | 16853 | return FALSE; |
7413f23f | 16854 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 12)) |
4e617b1e PB |
16855 | return FALSE; |
16856 | #else | |
906e58ca | 16857 | /* A three-word PLT with no Thumb thunk contains only Arm code, |
4e617b1e PB |
16858 | so only need to output a mapping symbol for the first PLT entry and |
16859 | entries with thumb thunks. */ | |
34e77a92 | 16860 | if (thumb_stub_p || addr == plt_header_size) |
4e617b1e | 16861 | { |
7413f23f | 16862 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr)) |
4e617b1e PB |
16863 | return FALSE; |
16864 | } | |
16865 | #endif | |
16866 | } | |
16867 | ||
16868 | return TRUE; | |
16869 | } | |
16870 | ||
34e77a92 RS |
16871 | /* Output mapping symbols for PLT entries associated with H. */ |
16872 | ||
16873 | static bfd_boolean | |
16874 | elf32_arm_output_plt_map (struct elf_link_hash_entry *h, void *inf) | |
16875 | { | |
16876 | output_arch_syminfo *osi = (output_arch_syminfo *) inf; | |
16877 | struct elf32_arm_link_hash_entry *eh; | |
16878 | ||
16879 | if (h->root.type == bfd_link_hash_indirect) | |
16880 | return TRUE; | |
16881 | ||
16882 | if (h->root.type == bfd_link_hash_warning) | |
16883 | /* When warning symbols are created, they **replace** the "real" | |
16884 | entry in the hash table, thus we never get to see the real | |
16885 | symbol in a hash traversal. So look at it now. */ | |
16886 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
16887 | ||
16888 | eh = (struct elf32_arm_link_hash_entry *) h; | |
16889 | return elf32_arm_output_plt_map_1 (osi, SYMBOL_CALLS_LOCAL (osi->info, h), | |
16890 | &h->plt, &eh->plt); | |
16891 | } | |
16892 | ||
4f4faa4d TP |
16893 | /* Bind a veneered symbol to its veneer identified by its hash entry |
16894 | STUB_ENTRY. The veneered location thus loose its symbol. */ | |
16895 | ||
16896 | static void | |
16897 | arm_stub_claim_sym (struct elf32_arm_stub_hash_entry *stub_entry) | |
16898 | { | |
16899 | struct elf32_arm_link_hash_entry *hash = stub_entry->h; | |
16900 | ||
16901 | BFD_ASSERT (hash); | |
16902 | hash->root.root.u.def.section = stub_entry->stub_sec; | |
16903 | hash->root.root.u.def.value = stub_entry->stub_offset; | |
16904 | hash->root.size = stub_entry->stub_size; | |
16905 | } | |
16906 | ||
7413f23f DJ |
16907 | /* Output a single local symbol for a generated stub. */ |
16908 | ||
16909 | static bfd_boolean | |
16910 | elf32_arm_output_stub_sym (output_arch_syminfo *osi, const char *name, | |
16911 | bfd_vma offset, bfd_vma size) | |
16912 | { | |
7413f23f DJ |
16913 | Elf_Internal_Sym sym; |
16914 | ||
7413f23f DJ |
16915 | sym.st_value = osi->sec->output_section->vma |
16916 | + osi->sec->output_offset | |
16917 | + offset; | |
16918 | sym.st_size = size; | |
16919 | sym.st_other = 0; | |
16920 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
16921 | sym.st_shndx = osi->sec_shndx; | |
35fc36a8 | 16922 | sym.st_target_internal = 0; |
57402f1e | 16923 | return osi->func (osi->flaginfo, name, &sym, osi->sec, NULL) == 1; |
7413f23f | 16924 | } |
4e617b1e | 16925 | |
da5938a2 | 16926 | static bfd_boolean |
8029a119 NC |
16927 | arm_map_one_stub (struct bfd_hash_entry * gen_entry, |
16928 | void * in_arg) | |
da5938a2 NC |
16929 | { |
16930 | struct elf32_arm_stub_hash_entry *stub_entry; | |
da5938a2 NC |
16931 | asection *stub_sec; |
16932 | bfd_vma addr; | |
7413f23f | 16933 | char *stub_name; |
9a008db3 | 16934 | output_arch_syminfo *osi; |
d3ce72d0 | 16935 | const insn_sequence *template_sequence; |
461a49ca DJ |
16936 | enum stub_insn_type prev_type; |
16937 | int size; | |
16938 | int i; | |
16939 | enum map_symbol_type sym_type; | |
da5938a2 NC |
16940 | |
16941 | /* Massage our args to the form they really have. */ | |
16942 | stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry; | |
9a008db3 | 16943 | osi = (output_arch_syminfo *) in_arg; |
da5938a2 | 16944 | |
da5938a2 NC |
16945 | stub_sec = stub_entry->stub_sec; |
16946 | ||
16947 | /* Ensure this stub is attached to the current section being | |
7413f23f | 16948 | processed. */ |
da5938a2 NC |
16949 | if (stub_sec != osi->sec) |
16950 | return TRUE; | |
16951 | ||
7413f23f | 16952 | addr = (bfd_vma) stub_entry->stub_offset; |
d3ce72d0 | 16953 | template_sequence = stub_entry->stub_template; |
4f4faa4d TP |
16954 | |
16955 | if (arm_stub_sym_claimed (stub_entry->stub_type)) | |
16956 | arm_stub_claim_sym (stub_entry); | |
16957 | else | |
7413f23f | 16958 | { |
4f4faa4d TP |
16959 | stub_name = stub_entry->output_name; |
16960 | switch (template_sequence[0].type) | |
16961 | { | |
16962 | case ARM_TYPE: | |
16963 | if (!elf32_arm_output_stub_sym (osi, stub_name, addr, | |
16964 | stub_entry->stub_size)) | |
16965 | return FALSE; | |
16966 | break; | |
16967 | case THUMB16_TYPE: | |
16968 | case THUMB32_TYPE: | |
16969 | if (!elf32_arm_output_stub_sym (osi, stub_name, addr | 1, | |
16970 | stub_entry->stub_size)) | |
16971 | return FALSE; | |
16972 | break; | |
16973 | default: | |
16974 | BFD_FAIL (); | |
16975 | return 0; | |
16976 | } | |
7413f23f | 16977 | } |
da5938a2 | 16978 | |
461a49ca DJ |
16979 | prev_type = DATA_TYPE; |
16980 | size = 0; | |
16981 | for (i = 0; i < stub_entry->stub_template_size; i++) | |
16982 | { | |
d3ce72d0 | 16983 | switch (template_sequence[i].type) |
461a49ca DJ |
16984 | { |
16985 | case ARM_TYPE: | |
16986 | sym_type = ARM_MAP_ARM; | |
16987 | break; | |
16988 | ||
16989 | case THUMB16_TYPE: | |
48229727 | 16990 | case THUMB32_TYPE: |
461a49ca DJ |
16991 | sym_type = ARM_MAP_THUMB; |
16992 | break; | |
16993 | ||
16994 | case DATA_TYPE: | |
16995 | sym_type = ARM_MAP_DATA; | |
16996 | break; | |
16997 | ||
16998 | default: | |
16999 | BFD_FAIL (); | |
4e31c731 | 17000 | return FALSE; |
461a49ca DJ |
17001 | } |
17002 | ||
d3ce72d0 | 17003 | if (template_sequence[i].type != prev_type) |
461a49ca | 17004 | { |
d3ce72d0 | 17005 | prev_type = template_sequence[i].type; |
461a49ca DJ |
17006 | if (!elf32_arm_output_map_sym (osi, sym_type, addr + size)) |
17007 | return FALSE; | |
17008 | } | |
17009 | ||
d3ce72d0 | 17010 | switch (template_sequence[i].type) |
461a49ca DJ |
17011 | { |
17012 | case ARM_TYPE: | |
48229727 | 17013 | case THUMB32_TYPE: |
461a49ca DJ |
17014 | size += 4; |
17015 | break; | |
17016 | ||
17017 | case THUMB16_TYPE: | |
17018 | size += 2; | |
17019 | break; | |
17020 | ||
17021 | case DATA_TYPE: | |
17022 | size += 4; | |
17023 | break; | |
17024 | ||
17025 | default: | |
17026 | BFD_FAIL (); | |
4e31c731 | 17027 | return FALSE; |
461a49ca DJ |
17028 | } |
17029 | } | |
17030 | ||
da5938a2 NC |
17031 | return TRUE; |
17032 | } | |
17033 | ||
33811162 DG |
17034 | /* Output mapping symbols for linker generated sections, |
17035 | and for those data-only sections that do not have a | |
17036 | $d. */ | |
4e617b1e PB |
17037 | |
17038 | static bfd_boolean | |
17039 | elf32_arm_output_arch_local_syms (bfd *output_bfd, | |
906e58ca | 17040 | struct bfd_link_info *info, |
57402f1e | 17041 | void *flaginfo, |
6e0b88f1 AM |
17042 | int (*func) (void *, const char *, |
17043 | Elf_Internal_Sym *, | |
17044 | asection *, | |
17045 | struct elf_link_hash_entry *)) | |
4e617b1e PB |
17046 | { |
17047 | output_arch_syminfo osi; | |
17048 | struct elf32_arm_link_hash_table *htab; | |
91a5743d PB |
17049 | bfd_vma offset; |
17050 | bfd_size_type size; | |
33811162 | 17051 | bfd *input_bfd; |
4e617b1e PB |
17052 | |
17053 | htab = elf32_arm_hash_table (info); | |
4dfe6ac6 NC |
17054 | if (htab == NULL) |
17055 | return FALSE; | |
17056 | ||
906e58ca | 17057 | check_use_blx (htab); |
91a5743d | 17058 | |
57402f1e | 17059 | osi.flaginfo = flaginfo; |
4e617b1e PB |
17060 | osi.info = info; |
17061 | osi.func = func; | |
906e58ca | 17062 | |
33811162 DG |
17063 | /* Add a $d mapping symbol to data-only sections that |
17064 | don't have any mapping symbol. This may result in (harmless) redundant | |
17065 | mapping symbols. */ | |
17066 | for (input_bfd = info->input_bfds; | |
17067 | input_bfd != NULL; | |
c72f2fb2 | 17068 | input_bfd = input_bfd->link.next) |
33811162 DG |
17069 | { |
17070 | if ((input_bfd->flags & (BFD_LINKER_CREATED | HAS_SYMS)) == HAS_SYMS) | |
17071 | for (osi.sec = input_bfd->sections; | |
17072 | osi.sec != NULL; | |
17073 | osi.sec = osi.sec->next) | |
17074 | { | |
17075 | if (osi.sec->output_section != NULL | |
f7dd8c79 DJ |
17076 | && ((osi.sec->output_section->flags & (SEC_ALLOC | SEC_CODE)) |
17077 | != 0) | |
33811162 DG |
17078 | && (osi.sec->flags & (SEC_HAS_CONTENTS | SEC_LINKER_CREATED)) |
17079 | == SEC_HAS_CONTENTS | |
17080 | && get_arm_elf_section_data (osi.sec) != NULL | |
501abfe0 | 17081 | && get_arm_elf_section_data (osi.sec)->mapcount == 0 |
7d500b83 CL |
17082 | && osi.sec->size > 0 |
17083 | && (osi.sec->flags & SEC_EXCLUDE) == 0) | |
33811162 DG |
17084 | { |
17085 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
17086 | (output_bfd, osi.sec->output_section); | |
17087 | if (osi.sec_shndx != (int)SHN_BAD) | |
17088 | elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 0); | |
17089 | } | |
17090 | } | |
17091 | } | |
17092 | ||
91a5743d PB |
17093 | /* ARM->Thumb glue. */ |
17094 | if (htab->arm_glue_size > 0) | |
17095 | { | |
3d4d4302 AM |
17096 | osi.sec = bfd_get_linker_section (htab->bfd_of_glue_owner, |
17097 | ARM2THUMB_GLUE_SECTION_NAME); | |
91a5743d PB |
17098 | |
17099 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
17100 | (output_bfd, osi.sec->output_section); | |
0e1862bb | 17101 | if (bfd_link_pic (info) || htab->root.is_relocatable_executable |
91a5743d PB |
17102 | || htab->pic_veneer) |
17103 | size = ARM2THUMB_PIC_GLUE_SIZE; | |
17104 | else if (htab->use_blx) | |
17105 | size = ARM2THUMB_V5_STATIC_GLUE_SIZE; | |
17106 | else | |
17107 | size = ARM2THUMB_STATIC_GLUE_SIZE; | |
4e617b1e | 17108 | |
91a5743d PB |
17109 | for (offset = 0; offset < htab->arm_glue_size; offset += size) |
17110 | { | |
7413f23f DJ |
17111 | elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, offset); |
17112 | elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, offset + size - 4); | |
91a5743d PB |
17113 | } |
17114 | } | |
17115 | ||
17116 | /* Thumb->ARM glue. */ | |
17117 | if (htab->thumb_glue_size > 0) | |
17118 | { | |
3d4d4302 AM |
17119 | osi.sec = bfd_get_linker_section (htab->bfd_of_glue_owner, |
17120 | THUMB2ARM_GLUE_SECTION_NAME); | |
91a5743d PB |
17121 | |
17122 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
17123 | (output_bfd, osi.sec->output_section); | |
17124 | size = THUMB2ARM_GLUE_SIZE; | |
17125 | ||
17126 | for (offset = 0; offset < htab->thumb_glue_size; offset += size) | |
17127 | { | |
7413f23f DJ |
17128 | elf32_arm_output_map_sym (&osi, ARM_MAP_THUMB, offset); |
17129 | elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, offset + 4); | |
91a5743d PB |
17130 | } |
17131 | } | |
17132 | ||
845b51d6 PB |
17133 | /* ARMv4 BX veneers. */ |
17134 | if (htab->bx_glue_size > 0) | |
17135 | { | |
3d4d4302 AM |
17136 | osi.sec = bfd_get_linker_section (htab->bfd_of_glue_owner, |
17137 | ARM_BX_GLUE_SECTION_NAME); | |
845b51d6 PB |
17138 | |
17139 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
17140 | (output_bfd, osi.sec->output_section); | |
17141 | ||
7413f23f | 17142 | elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0); |
845b51d6 PB |
17143 | } |
17144 | ||
8029a119 NC |
17145 | /* Long calls stubs. */ |
17146 | if (htab->stub_bfd && htab->stub_bfd->sections) | |
17147 | { | |
da5938a2 | 17148 | asection* stub_sec; |
8029a119 | 17149 | |
da5938a2 NC |
17150 | for (stub_sec = htab->stub_bfd->sections; |
17151 | stub_sec != NULL; | |
8029a119 NC |
17152 | stub_sec = stub_sec->next) |
17153 | { | |
17154 | /* Ignore non-stub sections. */ | |
17155 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
17156 | continue; | |
da5938a2 | 17157 | |
8029a119 | 17158 | osi.sec = stub_sec; |
da5938a2 | 17159 | |
8029a119 NC |
17160 | osi.sec_shndx = _bfd_elf_section_from_bfd_section |
17161 | (output_bfd, osi.sec->output_section); | |
da5938a2 | 17162 | |
8029a119 NC |
17163 | bfd_hash_traverse (&htab->stub_hash_table, arm_map_one_stub, &osi); |
17164 | } | |
17165 | } | |
da5938a2 | 17166 | |
91a5743d | 17167 | /* Finally, output mapping symbols for the PLT. */ |
34e77a92 | 17168 | if (htab->root.splt && htab->root.splt->size > 0) |
4e617b1e | 17169 | { |
34e77a92 RS |
17170 | osi.sec = htab->root.splt; |
17171 | osi.sec_shndx = (_bfd_elf_section_from_bfd_section | |
17172 | (output_bfd, osi.sec->output_section)); | |
17173 | ||
17174 | /* Output mapping symbols for the plt header. SymbianOS does not have a | |
17175 | plt header. */ | |
17176 | if (htab->vxworks_p) | |
17177 | { | |
17178 | /* VxWorks shared libraries have no PLT header. */ | |
0e1862bb | 17179 | if (!bfd_link_pic (info)) |
34e77a92 RS |
17180 | { |
17181 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0)) | |
17182 | return FALSE; | |
17183 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 12)) | |
17184 | return FALSE; | |
17185 | } | |
17186 | } | |
b38cadfb NC |
17187 | else if (htab->nacl_p) |
17188 | { | |
17189 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0)) | |
17190 | return FALSE; | |
17191 | } | |
eed94f8f NC |
17192 | else if (using_thumb_only (htab)) |
17193 | { | |
17194 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_THUMB, 0)) | |
17195 | return FALSE; | |
17196 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 12)) | |
17197 | return FALSE; | |
17198 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_THUMB, 16)) | |
17199 | return FALSE; | |
17200 | } | |
34e77a92 | 17201 | else if (!htab->symbian_p) |
4e617b1e | 17202 | { |
7413f23f | 17203 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0)) |
4e617b1e | 17204 | return FALSE; |
34e77a92 RS |
17205 | #ifndef FOUR_WORD_PLT |
17206 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 16)) | |
4e617b1e | 17207 | return FALSE; |
34e77a92 | 17208 | #endif |
4e617b1e PB |
17209 | } |
17210 | } | |
99059e56 RM |
17211 | if (htab->nacl_p && htab->root.iplt && htab->root.iplt->size > 0) |
17212 | { | |
17213 | /* NaCl uses a special first entry in .iplt too. */ | |
17214 | osi.sec = htab->root.iplt; | |
17215 | osi.sec_shndx = (_bfd_elf_section_from_bfd_section | |
17216 | (output_bfd, osi.sec->output_section)); | |
17217 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0)) | |
17218 | return FALSE; | |
17219 | } | |
34e77a92 RS |
17220 | if ((htab->root.splt && htab->root.splt->size > 0) |
17221 | || (htab->root.iplt && htab->root.iplt->size > 0)) | |
4e617b1e | 17222 | { |
34e77a92 RS |
17223 | elf_link_hash_traverse (&htab->root, elf32_arm_output_plt_map, &osi); |
17224 | for (input_bfd = info->input_bfds; | |
17225 | input_bfd != NULL; | |
c72f2fb2 | 17226 | input_bfd = input_bfd->link.next) |
34e77a92 RS |
17227 | { |
17228 | struct arm_local_iplt_info **local_iplt; | |
17229 | unsigned int i, num_syms; | |
4e617b1e | 17230 | |
34e77a92 RS |
17231 | local_iplt = elf32_arm_local_iplt (input_bfd); |
17232 | if (local_iplt != NULL) | |
17233 | { | |
17234 | num_syms = elf_symtab_hdr (input_bfd).sh_info; | |
17235 | for (i = 0; i < num_syms; i++) | |
17236 | if (local_iplt[i] != NULL | |
17237 | && !elf32_arm_output_plt_map_1 (&osi, TRUE, | |
17238 | &local_iplt[i]->root, | |
17239 | &local_iplt[i]->arm)) | |
17240 | return FALSE; | |
17241 | } | |
17242 | } | |
17243 | } | |
0855e32b NS |
17244 | if (htab->dt_tlsdesc_plt != 0) |
17245 | { | |
17246 | /* Mapping symbols for the lazy tls trampoline. */ | |
17247 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, htab->dt_tlsdesc_plt)) | |
17248 | return FALSE; | |
b38cadfb | 17249 | |
0855e32b NS |
17250 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, |
17251 | htab->dt_tlsdesc_plt + 24)) | |
17252 | return FALSE; | |
17253 | } | |
17254 | if (htab->tls_trampoline != 0) | |
17255 | { | |
17256 | /* Mapping symbols for the tls trampoline. */ | |
17257 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, htab->tls_trampoline)) | |
17258 | return FALSE; | |
17259 | #ifdef FOUR_WORD_PLT | |
17260 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, | |
17261 | htab->tls_trampoline + 12)) | |
17262 | return FALSE; | |
b38cadfb | 17263 | #endif |
0855e32b | 17264 | } |
b38cadfb | 17265 | |
4e617b1e PB |
17266 | return TRUE; |
17267 | } | |
17268 | ||
54ddd295 TP |
17269 | /* Filter normal symbols of CMSE entry functions of ABFD to include in |
17270 | the import library. All SYMCOUNT symbols of ABFD can be examined | |
17271 | from their pointers in SYMS. Pointers of symbols to keep should be | |
17272 | stored continuously at the beginning of that array. | |
17273 | ||
17274 | Returns the number of symbols to keep. */ | |
17275 | ||
17276 | static unsigned int | |
17277 | elf32_arm_filter_cmse_symbols (bfd *abfd ATTRIBUTE_UNUSED, | |
17278 | struct bfd_link_info *info, | |
17279 | asymbol **syms, long symcount) | |
17280 | { | |
17281 | size_t maxnamelen; | |
17282 | char *cmse_name; | |
17283 | long src_count, dst_count = 0; | |
17284 | struct elf32_arm_link_hash_table *htab; | |
17285 | ||
17286 | htab = elf32_arm_hash_table (info); | |
17287 | if (!htab->stub_bfd || !htab->stub_bfd->sections) | |
17288 | symcount = 0; | |
17289 | ||
17290 | maxnamelen = 128; | |
17291 | cmse_name = (char *) bfd_malloc (maxnamelen); | |
17292 | for (src_count = 0; src_count < symcount; src_count++) | |
17293 | { | |
17294 | struct elf32_arm_link_hash_entry *cmse_hash; | |
17295 | asymbol *sym; | |
17296 | flagword flags; | |
17297 | char *name; | |
17298 | size_t namelen; | |
17299 | ||
17300 | sym = syms[src_count]; | |
17301 | flags = sym->flags; | |
17302 | name = (char *) bfd_asymbol_name (sym); | |
17303 | ||
17304 | if ((flags & BSF_FUNCTION) != BSF_FUNCTION) | |
17305 | continue; | |
17306 | if (!(flags & (BSF_GLOBAL | BSF_WEAK))) | |
17307 | continue; | |
17308 | ||
17309 | namelen = strlen (name) + sizeof (CMSE_PREFIX) + 1; | |
17310 | if (namelen > maxnamelen) | |
17311 | { | |
17312 | cmse_name = (char *) | |
17313 | bfd_realloc (cmse_name, namelen); | |
17314 | maxnamelen = namelen; | |
17315 | } | |
17316 | snprintf (cmse_name, maxnamelen, "%s%s", CMSE_PREFIX, name); | |
17317 | cmse_hash = (struct elf32_arm_link_hash_entry *) | |
17318 | elf_link_hash_lookup (&(htab)->root, cmse_name, FALSE, FALSE, TRUE); | |
17319 | ||
17320 | if (!cmse_hash | |
17321 | || (cmse_hash->root.root.type != bfd_link_hash_defined | |
17322 | && cmse_hash->root.root.type != bfd_link_hash_defweak) | |
17323 | || cmse_hash->root.type != STT_FUNC) | |
17324 | continue; | |
17325 | ||
17326 | if (!ARM_GET_SYM_CMSE_SPCL (cmse_hash->root.target_internal)) | |
17327 | continue; | |
17328 | ||
17329 | syms[dst_count++] = sym; | |
17330 | } | |
17331 | free (cmse_name); | |
17332 | ||
17333 | syms[dst_count] = NULL; | |
17334 | ||
17335 | return dst_count; | |
17336 | } | |
17337 | ||
17338 | /* Filter symbols of ABFD to include in the import library. All | |
17339 | SYMCOUNT symbols of ABFD can be examined from their pointers in | |
17340 | SYMS. Pointers of symbols to keep should be stored continuously at | |
17341 | the beginning of that array. | |
17342 | ||
17343 | Returns the number of symbols to keep. */ | |
17344 | ||
17345 | static unsigned int | |
17346 | elf32_arm_filter_implib_symbols (bfd *abfd ATTRIBUTE_UNUSED, | |
17347 | struct bfd_link_info *info, | |
17348 | asymbol **syms, long symcount) | |
17349 | { | |
17350 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (info); | |
17351 | ||
17352 | if (globals->cmse_implib) | |
17353 | return elf32_arm_filter_cmse_symbols (abfd, info, syms, symcount); | |
17354 | else | |
17355 | return _bfd_elf_filter_global_symbols (abfd, info, syms, symcount); | |
17356 | } | |
17357 | ||
e489d0ae PB |
17358 | /* Allocate target specific section data. */ |
17359 | ||
17360 | static bfd_boolean | |
17361 | elf32_arm_new_section_hook (bfd *abfd, asection *sec) | |
17362 | { | |
f592407e AM |
17363 | if (!sec->used_by_bfd) |
17364 | { | |
17365 | _arm_elf_section_data *sdata; | |
17366 | bfd_size_type amt = sizeof (*sdata); | |
e489d0ae | 17367 | |
21d799b5 | 17368 | sdata = (_arm_elf_section_data *) bfd_zalloc (abfd, amt); |
f592407e AM |
17369 | if (sdata == NULL) |
17370 | return FALSE; | |
17371 | sec->used_by_bfd = sdata; | |
17372 | } | |
e489d0ae PB |
17373 | |
17374 | return _bfd_elf_new_section_hook (abfd, sec); | |
17375 | } | |
17376 | ||
17377 | ||
17378 | /* Used to order a list of mapping symbols by address. */ | |
17379 | ||
17380 | static int | |
17381 | elf32_arm_compare_mapping (const void * a, const void * b) | |
17382 | { | |
7f6a71ff JM |
17383 | const elf32_arm_section_map *amap = (const elf32_arm_section_map *) a; |
17384 | const elf32_arm_section_map *bmap = (const elf32_arm_section_map *) b; | |
17385 | ||
17386 | if (amap->vma > bmap->vma) | |
17387 | return 1; | |
17388 | else if (amap->vma < bmap->vma) | |
17389 | return -1; | |
17390 | else if (amap->type > bmap->type) | |
17391 | /* Ensure results do not depend on the host qsort for objects with | |
17392 | multiple mapping symbols at the same address by sorting on type | |
17393 | after vma. */ | |
17394 | return 1; | |
17395 | else if (amap->type < bmap->type) | |
17396 | return -1; | |
17397 | else | |
17398 | return 0; | |
e489d0ae PB |
17399 | } |
17400 | ||
2468f9c9 PB |
17401 | /* Add OFFSET to lower 31 bits of ADDR, leaving other bits unmodified. */ |
17402 | ||
17403 | static unsigned long | |
17404 | offset_prel31 (unsigned long addr, bfd_vma offset) | |
17405 | { | |
17406 | return (addr & ~0x7ffffffful) | ((addr + offset) & 0x7ffffffful); | |
17407 | } | |
17408 | ||
17409 | /* Copy an .ARM.exidx table entry, adding OFFSET to (applied) PREL31 | |
17410 | relocations. */ | |
17411 | ||
17412 | static void | |
17413 | copy_exidx_entry (bfd *output_bfd, bfd_byte *to, bfd_byte *from, bfd_vma offset) | |
17414 | { | |
17415 | unsigned long first_word = bfd_get_32 (output_bfd, from); | |
17416 | unsigned long second_word = bfd_get_32 (output_bfd, from + 4); | |
b38cadfb | 17417 | |
2468f9c9 PB |
17418 | /* High bit of first word is supposed to be zero. */ |
17419 | if ((first_word & 0x80000000ul) == 0) | |
17420 | first_word = offset_prel31 (first_word, offset); | |
b38cadfb | 17421 | |
2468f9c9 PB |
17422 | /* If the high bit of the first word is clear, and the bit pattern is not 0x1 |
17423 | (EXIDX_CANTUNWIND), this is an offset to an .ARM.extab entry. */ | |
17424 | if ((second_word != 0x1) && ((second_word & 0x80000000ul) == 0)) | |
17425 | second_word = offset_prel31 (second_word, offset); | |
b38cadfb | 17426 | |
2468f9c9 PB |
17427 | bfd_put_32 (output_bfd, first_word, to); |
17428 | bfd_put_32 (output_bfd, second_word, to + 4); | |
17429 | } | |
e489d0ae | 17430 | |
48229727 JB |
17431 | /* Data for make_branch_to_a8_stub(). */ |
17432 | ||
b38cadfb NC |
17433 | struct a8_branch_to_stub_data |
17434 | { | |
48229727 JB |
17435 | asection *writing_section; |
17436 | bfd_byte *contents; | |
17437 | }; | |
17438 | ||
17439 | ||
17440 | /* Helper to insert branches to Cortex-A8 erratum stubs in the right | |
17441 | places for a particular section. */ | |
17442 | ||
17443 | static bfd_boolean | |
17444 | make_branch_to_a8_stub (struct bfd_hash_entry *gen_entry, | |
99059e56 | 17445 | void *in_arg) |
48229727 JB |
17446 | { |
17447 | struct elf32_arm_stub_hash_entry *stub_entry; | |
17448 | struct a8_branch_to_stub_data *data; | |
17449 | bfd_byte *contents; | |
17450 | unsigned long branch_insn; | |
17451 | bfd_vma veneered_insn_loc, veneer_entry_loc; | |
17452 | bfd_signed_vma branch_offset; | |
17453 | bfd *abfd; | |
8d9d9490 | 17454 | unsigned int loc; |
48229727 JB |
17455 | |
17456 | stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry; | |
17457 | data = (struct a8_branch_to_stub_data *) in_arg; | |
17458 | ||
17459 | if (stub_entry->target_section != data->writing_section | |
4563a860 | 17460 | || stub_entry->stub_type < arm_stub_a8_veneer_lwm) |
48229727 JB |
17461 | return TRUE; |
17462 | ||
17463 | contents = data->contents; | |
17464 | ||
8d9d9490 TP |
17465 | /* We use target_section as Cortex-A8 erratum workaround stubs are only |
17466 | generated when both source and target are in the same section. */ | |
48229727 JB |
17467 | veneered_insn_loc = stub_entry->target_section->output_section->vma |
17468 | + stub_entry->target_section->output_offset | |
8d9d9490 | 17469 | + stub_entry->source_value; |
48229727 JB |
17470 | |
17471 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
17472 | + stub_entry->stub_sec->output_offset | |
17473 | + stub_entry->stub_offset; | |
17474 | ||
17475 | if (stub_entry->stub_type == arm_stub_a8_veneer_blx) | |
17476 | veneered_insn_loc &= ~3u; | |
17477 | ||
17478 | branch_offset = veneer_entry_loc - veneered_insn_loc - 4; | |
17479 | ||
17480 | abfd = stub_entry->target_section->owner; | |
8d9d9490 | 17481 | loc = stub_entry->source_value; |
48229727 JB |
17482 | |
17483 | /* We attempt to avoid this condition by setting stubs_always_after_branch | |
17484 | in elf32_arm_size_stubs if we've enabled the Cortex-A8 erratum workaround. | |
17485 | This check is just to be on the safe side... */ | |
17486 | if ((veneered_insn_loc & ~0xfff) == (veneer_entry_loc & ~0xfff)) | |
17487 | { | |
17488 | (*_bfd_error_handler) (_("%B: error: Cortex-A8 erratum stub is " | |
17489 | "allocated in unsafe location"), abfd); | |
17490 | return FALSE; | |
17491 | } | |
17492 | ||
17493 | switch (stub_entry->stub_type) | |
17494 | { | |
17495 | case arm_stub_a8_veneer_b: | |
17496 | case arm_stub_a8_veneer_b_cond: | |
17497 | branch_insn = 0xf0009000; | |
17498 | goto jump24; | |
17499 | ||
17500 | case arm_stub_a8_veneer_blx: | |
17501 | branch_insn = 0xf000e800; | |
17502 | goto jump24; | |
17503 | ||
17504 | case arm_stub_a8_veneer_bl: | |
17505 | { | |
17506 | unsigned int i1, j1, i2, j2, s; | |
17507 | ||
17508 | branch_insn = 0xf000d000; | |
17509 | ||
17510 | jump24: | |
17511 | if (branch_offset < -16777216 || branch_offset > 16777214) | |
17512 | { | |
17513 | /* There's not much we can do apart from complain if this | |
17514 | happens. */ | |
17515 | (*_bfd_error_handler) (_("%B: error: Cortex-A8 erratum stub out " | |
17516 | "of range (input file too large)"), abfd); | |
17517 | return FALSE; | |
17518 | } | |
17519 | ||
17520 | /* i1 = not(j1 eor s), so: | |
17521 | not i1 = j1 eor s | |
17522 | j1 = (not i1) eor s. */ | |
17523 | ||
17524 | branch_insn |= (branch_offset >> 1) & 0x7ff; | |
17525 | branch_insn |= ((branch_offset >> 12) & 0x3ff) << 16; | |
17526 | i2 = (branch_offset >> 22) & 1; | |
17527 | i1 = (branch_offset >> 23) & 1; | |
17528 | s = (branch_offset >> 24) & 1; | |
17529 | j1 = (!i1) ^ s; | |
17530 | j2 = (!i2) ^ s; | |
17531 | branch_insn |= j2 << 11; | |
17532 | branch_insn |= j1 << 13; | |
17533 | branch_insn |= s << 26; | |
17534 | } | |
17535 | break; | |
17536 | ||
17537 | default: | |
17538 | BFD_FAIL (); | |
17539 | return FALSE; | |
17540 | } | |
17541 | ||
8d9d9490 TP |
17542 | bfd_put_16 (abfd, (branch_insn >> 16) & 0xffff, &contents[loc]); |
17543 | bfd_put_16 (abfd, branch_insn & 0xffff, &contents[loc + 2]); | |
48229727 JB |
17544 | |
17545 | return TRUE; | |
17546 | } | |
17547 | ||
a504d23a LA |
17548 | /* Beginning of stm32l4xx work-around. */ |
17549 | ||
17550 | /* Functions encoding instructions necessary for the emission of the | |
17551 | fix-stm32l4xx-629360. | |
17552 | Encoding is extracted from the | |
17553 | ARM (C) Architecture Reference Manual | |
17554 | ARMv7-A and ARMv7-R edition | |
17555 | ARM DDI 0406C.b (ID072512). */ | |
17556 | ||
17557 | static inline bfd_vma | |
82188b29 | 17558 | create_instruction_branch_absolute (int branch_offset) |
a504d23a LA |
17559 | { |
17560 | /* A8.8.18 B (A8-334) | |
17561 | B target_address (Encoding T4). */ | |
17562 | /* 1111 - 0Sii - iiii - iiii - 10J1 - Jiii - iiii - iiii. */ | |
17563 | /* jump offset is: S:I1:I2:imm10:imm11:0. */ | |
17564 | /* with : I1 = NOT (J1 EOR S) I2 = NOT (J2 EOR S). */ | |
17565 | ||
a504d23a LA |
17566 | int s = ((branch_offset & 0x1000000) >> 24); |
17567 | int j1 = s ^ !((branch_offset & 0x800000) >> 23); | |
17568 | int j2 = s ^ !((branch_offset & 0x400000) >> 22); | |
17569 | ||
17570 | if (branch_offset < -(1 << 24) || branch_offset >= (1 << 24)) | |
17571 | BFD_ASSERT (0 && "Error: branch out of range. Cannot create branch."); | |
17572 | ||
17573 | bfd_vma patched_inst = 0xf0009000 | |
17574 | | s << 26 /* S. */ | |
17575 | | (((unsigned long) (branch_offset) >> 12) & 0x3ff) << 16 /* imm10. */ | |
17576 | | j1 << 13 /* J1. */ | |
17577 | | j2 << 11 /* J2. */ | |
17578 | | (((unsigned long) (branch_offset) >> 1) & 0x7ff); /* imm11. */ | |
17579 | ||
17580 | return patched_inst; | |
17581 | } | |
17582 | ||
17583 | static inline bfd_vma | |
17584 | create_instruction_ldmia (int base_reg, int wback, int reg_mask) | |
17585 | { | |
17586 | /* A8.8.57 LDM/LDMIA/LDMFD (A8-396) | |
17587 | LDMIA Rn!, {Ra, Rb, Rc, ...} (Encoding T2). */ | |
17588 | bfd_vma patched_inst = 0xe8900000 | |
17589 | | (/*W=*/wback << 21) | |
17590 | | (base_reg << 16) | |
17591 | | (reg_mask & 0x0000ffff); | |
17592 | ||
17593 | return patched_inst; | |
17594 | } | |
17595 | ||
17596 | static inline bfd_vma | |
17597 | create_instruction_ldmdb (int base_reg, int wback, int reg_mask) | |
17598 | { | |
17599 | /* A8.8.60 LDMDB/LDMEA (A8-402) | |
17600 | LDMDB Rn!, {Ra, Rb, Rc, ...} (Encoding T1). */ | |
17601 | bfd_vma patched_inst = 0xe9100000 | |
17602 | | (/*W=*/wback << 21) | |
17603 | | (base_reg << 16) | |
17604 | | (reg_mask & 0x0000ffff); | |
17605 | ||
17606 | return patched_inst; | |
17607 | } | |
17608 | ||
17609 | static inline bfd_vma | |
17610 | create_instruction_mov (int target_reg, int source_reg) | |
17611 | { | |
17612 | /* A8.8.103 MOV (register) (A8-486) | |
17613 | MOV Rd, Rm (Encoding T1). */ | |
17614 | bfd_vma patched_inst = 0x4600 | |
17615 | | (target_reg & 0x7) | |
17616 | | ((target_reg & 0x8) >> 3) << 7 | |
17617 | | (source_reg << 3); | |
17618 | ||
17619 | return patched_inst; | |
17620 | } | |
17621 | ||
17622 | static inline bfd_vma | |
17623 | create_instruction_sub (int target_reg, int source_reg, int value) | |
17624 | { | |
17625 | /* A8.8.221 SUB (immediate) (A8-708) | |
17626 | SUB Rd, Rn, #value (Encoding T3). */ | |
17627 | bfd_vma patched_inst = 0xf1a00000 | |
17628 | | (target_reg << 8) | |
17629 | | (source_reg << 16) | |
17630 | | (/*S=*/0 << 20) | |
17631 | | ((value & 0x800) >> 11) << 26 | |
17632 | | ((value & 0x700) >> 8) << 12 | |
17633 | | (value & 0x0ff); | |
17634 | ||
17635 | return patched_inst; | |
17636 | } | |
17637 | ||
17638 | static inline bfd_vma | |
9239bbd3 | 17639 | create_instruction_vldmia (int base_reg, int is_dp, int wback, int num_words, |
a504d23a LA |
17640 | int first_reg) |
17641 | { | |
17642 | /* A8.8.332 VLDM (A8-922) | |
9239bbd3 CM |
17643 | VLMD{MODE} Rn{!}, {list} (Encoding T1 or T2). */ |
17644 | bfd_vma patched_inst = (is_dp ? 0xec900b00 : 0xec900a00) | |
a504d23a LA |
17645 | | (/*W=*/wback << 21) |
17646 | | (base_reg << 16) | |
9239bbd3 CM |
17647 | | (num_words & 0x000000ff) |
17648 | | (((unsigned)first_reg >> 1) & 0x0000000f) << 12 | |
a504d23a LA |
17649 | | (first_reg & 0x00000001) << 22; |
17650 | ||
17651 | return patched_inst; | |
17652 | } | |
17653 | ||
17654 | static inline bfd_vma | |
9239bbd3 CM |
17655 | create_instruction_vldmdb (int base_reg, int is_dp, int num_words, |
17656 | int first_reg) | |
a504d23a LA |
17657 | { |
17658 | /* A8.8.332 VLDM (A8-922) | |
9239bbd3 CM |
17659 | VLMD{MODE} Rn!, {} (Encoding T1 or T2). */ |
17660 | bfd_vma patched_inst = (is_dp ? 0xed300b00 : 0xed300a00) | |
a504d23a | 17661 | | (base_reg << 16) |
9239bbd3 CM |
17662 | | (num_words & 0x000000ff) |
17663 | | (((unsigned)first_reg >>1 ) & 0x0000000f) << 12 | |
a504d23a LA |
17664 | | (first_reg & 0x00000001) << 22; |
17665 | ||
17666 | return patched_inst; | |
17667 | } | |
17668 | ||
17669 | static inline bfd_vma | |
17670 | create_instruction_udf_w (int value) | |
17671 | { | |
17672 | /* A8.8.247 UDF (A8-758) | |
17673 | Undefined (Encoding T2). */ | |
17674 | bfd_vma patched_inst = 0xf7f0a000 | |
17675 | | (value & 0x00000fff) | |
17676 | | (value & 0x000f0000) << 16; | |
17677 | ||
17678 | return patched_inst; | |
17679 | } | |
17680 | ||
17681 | static inline bfd_vma | |
17682 | create_instruction_udf (int value) | |
17683 | { | |
17684 | /* A8.8.247 UDF (A8-758) | |
17685 | Undefined (Encoding T1). */ | |
17686 | bfd_vma patched_inst = 0xde00 | |
17687 | | (value & 0xff); | |
17688 | ||
17689 | return patched_inst; | |
17690 | } | |
17691 | ||
17692 | /* Functions writing an instruction in memory, returning the next | |
17693 | memory position to write to. */ | |
17694 | ||
17695 | static inline bfd_byte * | |
17696 | push_thumb2_insn32 (struct elf32_arm_link_hash_table * htab, | |
17697 | bfd * output_bfd, bfd_byte *pt, insn32 insn) | |
17698 | { | |
17699 | put_thumb2_insn (htab, output_bfd, insn, pt); | |
17700 | return pt + 4; | |
17701 | } | |
17702 | ||
17703 | static inline bfd_byte * | |
17704 | push_thumb2_insn16 (struct elf32_arm_link_hash_table * htab, | |
17705 | bfd * output_bfd, bfd_byte *pt, insn32 insn) | |
17706 | { | |
17707 | put_thumb_insn (htab, output_bfd, insn, pt); | |
17708 | return pt + 2; | |
17709 | } | |
17710 | ||
17711 | /* Function filling up a region in memory with T1 and T2 UDFs taking | |
17712 | care of alignment. */ | |
17713 | ||
17714 | static bfd_byte * | |
17715 | stm32l4xx_fill_stub_udf (struct elf32_arm_link_hash_table * htab, | |
17716 | bfd * output_bfd, | |
17717 | const bfd_byte * const base_stub_contents, | |
17718 | bfd_byte * const from_stub_contents, | |
17719 | const bfd_byte * const end_stub_contents) | |
17720 | { | |
17721 | bfd_byte *current_stub_contents = from_stub_contents; | |
17722 | ||
17723 | /* Fill the remaining of the stub with deterministic contents : UDF | |
17724 | instructions. | |
17725 | Check if realignment is needed on modulo 4 frontier using T1, to | |
17726 | further use T2. */ | |
17727 | if ((current_stub_contents < end_stub_contents) | |
17728 | && !((current_stub_contents - base_stub_contents) % 2) | |
17729 | && ((current_stub_contents - base_stub_contents) % 4)) | |
17730 | current_stub_contents = | |
17731 | push_thumb2_insn16 (htab, output_bfd, current_stub_contents, | |
17732 | create_instruction_udf (0)); | |
17733 | ||
17734 | for (; current_stub_contents < end_stub_contents;) | |
17735 | current_stub_contents = | |
17736 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
17737 | create_instruction_udf_w (0)); | |
17738 | ||
17739 | return current_stub_contents; | |
17740 | } | |
17741 | ||
17742 | /* Functions writing the stream of instructions equivalent to the | |
17743 | derived sequence for ldmia, ldmdb, vldm respectively. */ | |
17744 | ||
17745 | static void | |
17746 | stm32l4xx_create_replacing_stub_ldmia (struct elf32_arm_link_hash_table * htab, | |
17747 | bfd * output_bfd, | |
17748 | const insn32 initial_insn, | |
17749 | const bfd_byte *const initial_insn_addr, | |
17750 | bfd_byte *const base_stub_contents) | |
17751 | { | |
17752 | int wback = (initial_insn & 0x00200000) >> 21; | |
17753 | int ri, rn = (initial_insn & 0x000F0000) >> 16; | |
17754 | int insn_all_registers = initial_insn & 0x0000ffff; | |
17755 | int insn_low_registers, insn_high_registers; | |
17756 | int usable_register_mask; | |
17757 | int nb_registers = popcount (insn_all_registers); | |
17758 | int restore_pc = (insn_all_registers & (1 << 15)) ? 1 : 0; | |
17759 | int restore_rn = (insn_all_registers & (1 << rn)) ? 1 : 0; | |
17760 | bfd_byte *current_stub_contents = base_stub_contents; | |
17761 | ||
17762 | BFD_ASSERT (is_thumb2_ldmia (initial_insn)); | |
17763 | ||
17764 | /* In BFD_ARM_STM32L4XX_FIX_ALL mode we may have to deal with | |
17765 | smaller than 8 registers load sequences that do not cause the | |
17766 | hardware issue. */ | |
17767 | if (nb_registers <= 8) | |
17768 | { | |
17769 | /* UNTOUCHED : LDMIA Rn{!}, {R-all-register-list}. */ | |
17770 | current_stub_contents = | |
17771 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
17772 | initial_insn); | |
17773 | ||
17774 | /* B initial_insn_addr+4. */ | |
17775 | if (!restore_pc) | |
17776 | current_stub_contents = | |
17777 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
17778 | create_instruction_branch_absolute | |
82188b29 NC |
17779 | (initial_insn_addr - current_stub_contents)); |
17780 | ||
a504d23a LA |
17781 | |
17782 | /* Fill the remaining of the stub with deterministic contents. */ | |
17783 | current_stub_contents = | |
17784 | stm32l4xx_fill_stub_udf (htab, output_bfd, | |
17785 | base_stub_contents, current_stub_contents, | |
17786 | base_stub_contents + | |
17787 | STM32L4XX_ERRATUM_LDM_VENEER_SIZE); | |
17788 | ||
17789 | return; | |
17790 | } | |
17791 | ||
17792 | /* - reg_list[13] == 0. */ | |
17793 | BFD_ASSERT ((insn_all_registers & (1 << 13))==0); | |
17794 | ||
17795 | /* - reg_list[14] & reg_list[15] != 1. */ | |
17796 | BFD_ASSERT ((insn_all_registers & 0xC000) != 0xC000); | |
17797 | ||
17798 | /* - if (wback==1) reg_list[rn] == 0. */ | |
17799 | BFD_ASSERT (!wback || !restore_rn); | |
17800 | ||
17801 | /* - nb_registers > 8. */ | |
17802 | BFD_ASSERT (popcount (insn_all_registers) > 8); | |
17803 | ||
17804 | /* At this point, LDMxx initial insn loads between 9 and 14 registers. */ | |
17805 | ||
17806 | /* In the following algorithm, we split this wide LDM using 2 LDM insns: | |
17807 | - One with the 7 lowest registers (register mask 0x007F) | |
17808 | This LDM will finally contain between 2 and 7 registers | |
17809 | - One with the 7 highest registers (register mask 0xDF80) | |
17810 | This ldm will finally contain between 2 and 7 registers. */ | |
17811 | insn_low_registers = insn_all_registers & 0x007F; | |
17812 | insn_high_registers = insn_all_registers & 0xDF80; | |
17813 | ||
17814 | /* A spare register may be needed during this veneer to temporarily | |
17815 | handle the base register. This register will be restored with the | |
17816 | last LDM operation. | |
17817 | The usable register may be any general purpose register (that | |
17818 | excludes PC, SP, LR : register mask is 0x1FFF). */ | |
17819 | usable_register_mask = 0x1FFF; | |
17820 | ||
17821 | /* Generate the stub function. */ | |
17822 | if (wback) | |
17823 | { | |
17824 | /* LDMIA Rn!, {R-low-register-list} : (Encoding T2). */ | |
17825 | current_stub_contents = | |
17826 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
17827 | create_instruction_ldmia | |
17828 | (rn, /*wback=*/1, insn_low_registers)); | |
17829 | ||
17830 | /* LDMIA Rn!, {R-high-register-list} : (Encoding T2). */ | |
17831 | current_stub_contents = | |
17832 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
17833 | create_instruction_ldmia | |
17834 | (rn, /*wback=*/1, insn_high_registers)); | |
17835 | if (!restore_pc) | |
17836 | { | |
17837 | /* B initial_insn_addr+4. */ | |
17838 | current_stub_contents = | |
17839 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
17840 | create_instruction_branch_absolute | |
82188b29 | 17841 | (initial_insn_addr - current_stub_contents)); |
a504d23a LA |
17842 | } |
17843 | } | |
17844 | else /* if (!wback). */ | |
17845 | { | |
17846 | ri = rn; | |
17847 | ||
17848 | /* If Rn is not part of the high-register-list, move it there. */ | |
17849 | if (!(insn_high_registers & (1 << rn))) | |
17850 | { | |
17851 | /* Choose a Ri in the high-register-list that will be restored. */ | |
17852 | ri = ctz (insn_high_registers & usable_register_mask & ~(1 << rn)); | |
17853 | ||
17854 | /* MOV Ri, Rn. */ | |
17855 | current_stub_contents = | |
17856 | push_thumb2_insn16 (htab, output_bfd, current_stub_contents, | |
17857 | create_instruction_mov (ri, rn)); | |
17858 | } | |
17859 | ||
17860 | /* LDMIA Ri!, {R-low-register-list} : (Encoding T2). */ | |
17861 | current_stub_contents = | |
17862 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
17863 | create_instruction_ldmia | |
17864 | (ri, /*wback=*/1, insn_low_registers)); | |
17865 | ||
17866 | /* LDMIA Ri, {R-high-register-list} : (Encoding T2). */ | |
17867 | current_stub_contents = | |
17868 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
17869 | create_instruction_ldmia | |
17870 | (ri, /*wback=*/0, insn_high_registers)); | |
17871 | ||
17872 | if (!restore_pc) | |
17873 | { | |
17874 | /* B initial_insn_addr+4. */ | |
17875 | current_stub_contents = | |
17876 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
17877 | create_instruction_branch_absolute | |
82188b29 | 17878 | (initial_insn_addr - current_stub_contents)); |
a504d23a LA |
17879 | } |
17880 | } | |
17881 | ||
17882 | /* Fill the remaining of the stub with deterministic contents. */ | |
17883 | current_stub_contents = | |
17884 | stm32l4xx_fill_stub_udf (htab, output_bfd, | |
17885 | base_stub_contents, current_stub_contents, | |
17886 | base_stub_contents + | |
17887 | STM32L4XX_ERRATUM_LDM_VENEER_SIZE); | |
17888 | } | |
17889 | ||
17890 | static void | |
17891 | stm32l4xx_create_replacing_stub_ldmdb (struct elf32_arm_link_hash_table * htab, | |
17892 | bfd * output_bfd, | |
17893 | const insn32 initial_insn, | |
17894 | const bfd_byte *const initial_insn_addr, | |
17895 | bfd_byte *const base_stub_contents) | |
17896 | { | |
17897 | int wback = (initial_insn & 0x00200000) >> 21; | |
17898 | int ri, rn = (initial_insn & 0x000f0000) >> 16; | |
17899 | int insn_all_registers = initial_insn & 0x0000ffff; | |
17900 | int insn_low_registers, insn_high_registers; | |
17901 | int usable_register_mask; | |
17902 | int restore_pc = (insn_all_registers & (1 << 15)) ? 1 : 0; | |
17903 | int restore_rn = (insn_all_registers & (1 << rn)) ? 1 : 0; | |
17904 | int nb_registers = popcount (insn_all_registers); | |
17905 | bfd_byte *current_stub_contents = base_stub_contents; | |
17906 | ||
17907 | BFD_ASSERT (is_thumb2_ldmdb (initial_insn)); | |
17908 | ||
17909 | /* In BFD_ARM_STM32L4XX_FIX_ALL mode we may have to deal with | |
17910 | smaller than 8 registers load sequences that do not cause the | |
17911 | hardware issue. */ | |
17912 | if (nb_registers <= 8) | |
17913 | { | |
17914 | /* UNTOUCHED : LDMIA Rn{!}, {R-all-register-list}. */ | |
17915 | current_stub_contents = | |
17916 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
17917 | initial_insn); | |
17918 | ||
17919 | /* B initial_insn_addr+4. */ | |
17920 | current_stub_contents = | |
17921 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
17922 | create_instruction_branch_absolute | |
82188b29 | 17923 | (initial_insn_addr - current_stub_contents)); |
a504d23a LA |
17924 | |
17925 | /* Fill the remaining of the stub with deterministic contents. */ | |
17926 | current_stub_contents = | |
17927 | stm32l4xx_fill_stub_udf (htab, output_bfd, | |
17928 | base_stub_contents, current_stub_contents, | |
17929 | base_stub_contents + | |
17930 | STM32L4XX_ERRATUM_LDM_VENEER_SIZE); | |
17931 | ||
17932 | return; | |
17933 | } | |
17934 | ||
17935 | /* - reg_list[13] == 0. */ | |
17936 | BFD_ASSERT ((insn_all_registers & (1 << 13)) == 0); | |
17937 | ||
17938 | /* - reg_list[14] & reg_list[15] != 1. */ | |
17939 | BFD_ASSERT ((insn_all_registers & 0xC000) != 0xC000); | |
17940 | ||
17941 | /* - if (wback==1) reg_list[rn] == 0. */ | |
17942 | BFD_ASSERT (!wback || !restore_rn); | |
17943 | ||
17944 | /* - nb_registers > 8. */ | |
17945 | BFD_ASSERT (popcount (insn_all_registers) > 8); | |
17946 | ||
17947 | /* At this point, LDMxx initial insn loads between 9 and 14 registers. */ | |
17948 | ||
17949 | /* In the following algorithm, we split this wide LDM using 2 LDM insn: | |
17950 | - One with the 7 lowest registers (register mask 0x007F) | |
17951 | This LDM will finally contain between 2 and 7 registers | |
17952 | - One with the 7 highest registers (register mask 0xDF80) | |
17953 | This ldm will finally contain between 2 and 7 registers. */ | |
17954 | insn_low_registers = insn_all_registers & 0x007F; | |
17955 | insn_high_registers = insn_all_registers & 0xDF80; | |
17956 | ||
17957 | /* A spare register may be needed during this veneer to temporarily | |
17958 | handle the base register. This register will be restored with | |
17959 | the last LDM operation. | |
17960 | The usable register may be any general purpose register (that excludes | |
17961 | PC, SP, LR : register mask is 0x1FFF). */ | |
17962 | usable_register_mask = 0x1FFF; | |
17963 | ||
17964 | /* Generate the stub function. */ | |
17965 | if (!wback && !restore_pc && !restore_rn) | |
17966 | { | |
17967 | /* Choose a Ri in the low-register-list that will be restored. */ | |
17968 | ri = ctz (insn_low_registers & usable_register_mask & ~(1 << rn)); | |
17969 | ||
17970 | /* MOV Ri, Rn. */ | |
17971 | current_stub_contents = | |
17972 | push_thumb2_insn16 (htab, output_bfd, current_stub_contents, | |
17973 | create_instruction_mov (ri, rn)); | |
17974 | ||
17975 | /* LDMDB Ri!, {R-high-register-list}. */ | |
17976 | current_stub_contents = | |
17977 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
17978 | create_instruction_ldmdb | |
17979 | (ri, /*wback=*/1, insn_high_registers)); | |
17980 | ||
17981 | /* LDMDB Ri, {R-low-register-list}. */ | |
17982 | current_stub_contents = | |
17983 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
17984 | create_instruction_ldmdb | |
17985 | (ri, /*wback=*/0, insn_low_registers)); | |
17986 | ||
17987 | /* B initial_insn_addr+4. */ | |
17988 | current_stub_contents = | |
17989 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
17990 | create_instruction_branch_absolute | |
82188b29 | 17991 | (initial_insn_addr - current_stub_contents)); |
a504d23a LA |
17992 | } |
17993 | else if (wback && !restore_pc && !restore_rn) | |
17994 | { | |
17995 | /* LDMDB Rn!, {R-high-register-list}. */ | |
17996 | current_stub_contents = | |
17997 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
17998 | create_instruction_ldmdb | |
17999 | (rn, /*wback=*/1, insn_high_registers)); | |
18000 | ||
18001 | /* LDMDB Rn!, {R-low-register-list}. */ | |
18002 | current_stub_contents = | |
18003 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
18004 | create_instruction_ldmdb | |
18005 | (rn, /*wback=*/1, insn_low_registers)); | |
18006 | ||
18007 | /* B initial_insn_addr+4. */ | |
18008 | current_stub_contents = | |
18009 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
18010 | create_instruction_branch_absolute | |
82188b29 | 18011 | (initial_insn_addr - current_stub_contents)); |
a504d23a LA |
18012 | } |
18013 | else if (!wback && restore_pc && !restore_rn) | |
18014 | { | |
18015 | /* Choose a Ri in the high-register-list that will be restored. */ | |
18016 | ri = ctz (insn_high_registers & usable_register_mask & ~(1 << rn)); | |
18017 | ||
18018 | /* SUB Ri, Rn, #(4*nb_registers). */ | |
18019 | current_stub_contents = | |
18020 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
18021 | create_instruction_sub (ri, rn, (4 * nb_registers))); | |
18022 | ||
18023 | /* LDMIA Ri!, {R-low-register-list}. */ | |
18024 | current_stub_contents = | |
18025 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
18026 | create_instruction_ldmia | |
18027 | (ri, /*wback=*/1, insn_low_registers)); | |
18028 | ||
18029 | /* LDMIA Ri, {R-high-register-list}. */ | |
18030 | current_stub_contents = | |
18031 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
18032 | create_instruction_ldmia | |
18033 | (ri, /*wback=*/0, insn_high_registers)); | |
18034 | } | |
18035 | else if (wback && restore_pc && !restore_rn) | |
18036 | { | |
18037 | /* Choose a Ri in the high-register-list that will be restored. */ | |
18038 | ri = ctz (insn_high_registers & usable_register_mask & ~(1 << rn)); | |
18039 | ||
18040 | /* SUB Rn, Rn, #(4*nb_registers) */ | |
18041 | current_stub_contents = | |
18042 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
18043 | create_instruction_sub (rn, rn, (4 * nb_registers))); | |
18044 | ||
18045 | /* MOV Ri, Rn. */ | |
18046 | current_stub_contents = | |
18047 | push_thumb2_insn16 (htab, output_bfd, current_stub_contents, | |
18048 | create_instruction_mov (ri, rn)); | |
18049 | ||
18050 | /* LDMIA Ri!, {R-low-register-list}. */ | |
18051 | current_stub_contents = | |
18052 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
18053 | create_instruction_ldmia | |
18054 | (ri, /*wback=*/1, insn_low_registers)); | |
18055 | ||
18056 | /* LDMIA Ri, {R-high-register-list}. */ | |
18057 | current_stub_contents = | |
18058 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
18059 | create_instruction_ldmia | |
18060 | (ri, /*wback=*/0, insn_high_registers)); | |
18061 | } | |
18062 | else if (!wback && !restore_pc && restore_rn) | |
18063 | { | |
18064 | ri = rn; | |
18065 | if (!(insn_low_registers & (1 << rn))) | |
18066 | { | |
18067 | /* Choose a Ri in the low-register-list that will be restored. */ | |
18068 | ri = ctz (insn_low_registers & usable_register_mask & ~(1 << rn)); | |
18069 | ||
18070 | /* MOV Ri, Rn. */ | |
18071 | current_stub_contents = | |
18072 | push_thumb2_insn16 (htab, output_bfd, current_stub_contents, | |
18073 | create_instruction_mov (ri, rn)); | |
18074 | } | |
18075 | ||
18076 | /* LDMDB Ri!, {R-high-register-list}. */ | |
18077 | current_stub_contents = | |
18078 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
18079 | create_instruction_ldmdb | |
18080 | (ri, /*wback=*/1, insn_high_registers)); | |
18081 | ||
18082 | /* LDMDB Ri, {R-low-register-list}. */ | |
18083 | current_stub_contents = | |
18084 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
18085 | create_instruction_ldmdb | |
18086 | (ri, /*wback=*/0, insn_low_registers)); | |
18087 | ||
18088 | /* B initial_insn_addr+4. */ | |
18089 | current_stub_contents = | |
18090 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
18091 | create_instruction_branch_absolute | |
82188b29 | 18092 | (initial_insn_addr - current_stub_contents)); |
a504d23a LA |
18093 | } |
18094 | else if (!wback && restore_pc && restore_rn) | |
18095 | { | |
18096 | ri = rn; | |
18097 | if (!(insn_high_registers & (1 << rn))) | |
18098 | { | |
18099 | /* Choose a Ri in the high-register-list that will be restored. */ | |
18100 | ri = ctz (insn_high_registers & usable_register_mask & ~(1 << rn)); | |
18101 | } | |
18102 | ||
18103 | /* SUB Ri, Rn, #(4*nb_registers). */ | |
18104 | current_stub_contents = | |
18105 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
18106 | create_instruction_sub (ri, rn, (4 * nb_registers))); | |
18107 | ||
18108 | /* LDMIA Ri!, {R-low-register-list}. */ | |
18109 | current_stub_contents = | |
18110 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
18111 | create_instruction_ldmia | |
18112 | (ri, /*wback=*/1, insn_low_registers)); | |
18113 | ||
18114 | /* LDMIA Ri, {R-high-register-list}. */ | |
18115 | current_stub_contents = | |
18116 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
18117 | create_instruction_ldmia | |
18118 | (ri, /*wback=*/0, insn_high_registers)); | |
18119 | } | |
18120 | else if (wback && restore_rn) | |
18121 | { | |
18122 | /* The assembler should not have accepted to encode this. */ | |
18123 | BFD_ASSERT (0 && "Cannot patch an instruction that has an " | |
18124 | "undefined behavior.\n"); | |
18125 | } | |
18126 | ||
18127 | /* Fill the remaining of the stub with deterministic contents. */ | |
18128 | current_stub_contents = | |
18129 | stm32l4xx_fill_stub_udf (htab, output_bfd, | |
18130 | base_stub_contents, current_stub_contents, | |
18131 | base_stub_contents + | |
18132 | STM32L4XX_ERRATUM_LDM_VENEER_SIZE); | |
18133 | ||
18134 | } | |
18135 | ||
18136 | static void | |
18137 | stm32l4xx_create_replacing_stub_vldm (struct elf32_arm_link_hash_table * htab, | |
18138 | bfd * output_bfd, | |
18139 | const insn32 initial_insn, | |
18140 | const bfd_byte *const initial_insn_addr, | |
18141 | bfd_byte *const base_stub_contents) | |
18142 | { | |
9239bbd3 | 18143 | int num_words = ((unsigned int) initial_insn << 24) >> 24; |
a504d23a LA |
18144 | bfd_byte *current_stub_contents = base_stub_contents; |
18145 | ||
18146 | BFD_ASSERT (is_thumb2_vldm (initial_insn)); | |
18147 | ||
18148 | /* In BFD_ARM_STM32L4XX_FIX_ALL mode we may have to deal with | |
9239bbd3 | 18149 | smaller than 8 words load sequences that do not cause the |
a504d23a | 18150 | hardware issue. */ |
9239bbd3 | 18151 | if (num_words <= 8) |
a504d23a LA |
18152 | { |
18153 | /* Untouched instruction. */ | |
18154 | current_stub_contents = | |
18155 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
18156 | initial_insn); | |
18157 | ||
18158 | /* B initial_insn_addr+4. */ | |
18159 | current_stub_contents = | |
18160 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
18161 | create_instruction_branch_absolute | |
82188b29 | 18162 | (initial_insn_addr - current_stub_contents)); |
a504d23a LA |
18163 | } |
18164 | else | |
18165 | { | |
9239bbd3 CM |
18166 | bfd_boolean is_dp = /* DP encoding. */ |
18167 | (initial_insn & 0xfe100f00) == 0xec100b00; | |
a504d23a LA |
18168 | bfd_boolean is_ia_nobang = /* (IA without !). */ |
18169 | (((initial_insn << 7) >> 28) & 0xd) == 0x4; | |
18170 | bfd_boolean is_ia_bang = /* (IA with !) - includes VPOP. */ | |
18171 | (((initial_insn << 7) >> 28) & 0xd) == 0x5; | |
18172 | bfd_boolean is_db_bang = /* (DB with !). */ | |
18173 | (((initial_insn << 7) >> 28) & 0xd) == 0x9; | |
9239bbd3 | 18174 | int base_reg = ((unsigned int) initial_insn << 12) >> 28; |
a504d23a | 18175 | /* d = UInt (Vd:D);. */ |
9239bbd3 | 18176 | int first_reg = ((((unsigned int) initial_insn << 16) >> 28) << 1) |
a504d23a LA |
18177 | | (((unsigned int)initial_insn << 9) >> 31); |
18178 | ||
9239bbd3 CM |
18179 | /* Compute the number of 8-words chunks needed to split. */ |
18180 | int chunks = (num_words % 8) ? (num_words / 8 + 1) : (num_words / 8); | |
a504d23a LA |
18181 | int chunk; |
18182 | ||
18183 | /* The test coverage has been done assuming the following | |
18184 | hypothesis that exactly one of the previous is_ predicates is | |
18185 | true. */ | |
9239bbd3 CM |
18186 | BFD_ASSERT ( (is_ia_nobang ^ is_ia_bang ^ is_db_bang) |
18187 | && !(is_ia_nobang & is_ia_bang & is_db_bang)); | |
a504d23a | 18188 | |
9239bbd3 | 18189 | /* We treat the cutting of the words in one pass for all |
a504d23a LA |
18190 | cases, then we emit the adjustments: |
18191 | ||
18192 | vldm rx, {...} | |
18193 | -> vldm rx!, {8_words_or_less} for each needed 8_word | |
18194 | -> sub rx, rx, #size (list) | |
18195 | ||
18196 | vldm rx!, {...} | |
18197 | -> vldm rx!, {8_words_or_less} for each needed 8_word | |
18198 | This also handles vpop instruction (when rx is sp) | |
18199 | ||
18200 | vldmd rx!, {...} | |
18201 | -> vldmb rx!, {8_words_or_less} for each needed 8_word. */ | |
9239bbd3 | 18202 | for (chunk = 0; chunk < chunks; ++chunk) |
a504d23a | 18203 | { |
9239bbd3 CM |
18204 | bfd_vma new_insn = 0; |
18205 | ||
a504d23a LA |
18206 | if (is_ia_nobang || is_ia_bang) |
18207 | { | |
9239bbd3 CM |
18208 | new_insn = create_instruction_vldmia |
18209 | (base_reg, | |
18210 | is_dp, | |
18211 | /*wback= . */1, | |
18212 | chunks - (chunk + 1) ? | |
18213 | 8 : num_words - chunk * 8, | |
18214 | first_reg + chunk * 8); | |
a504d23a LA |
18215 | } |
18216 | else if (is_db_bang) | |
18217 | { | |
9239bbd3 CM |
18218 | new_insn = create_instruction_vldmdb |
18219 | (base_reg, | |
18220 | is_dp, | |
18221 | chunks - (chunk + 1) ? | |
18222 | 8 : num_words - chunk * 8, | |
18223 | first_reg + chunk * 8); | |
a504d23a | 18224 | } |
9239bbd3 CM |
18225 | |
18226 | if (new_insn) | |
18227 | current_stub_contents = | |
18228 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
18229 | new_insn); | |
a504d23a LA |
18230 | } |
18231 | ||
18232 | /* Only this case requires the base register compensation | |
18233 | subtract. */ | |
18234 | if (is_ia_nobang) | |
18235 | { | |
18236 | current_stub_contents = | |
18237 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
18238 | create_instruction_sub | |
9239bbd3 | 18239 | (base_reg, base_reg, 4*num_words)); |
a504d23a LA |
18240 | } |
18241 | ||
18242 | /* B initial_insn_addr+4. */ | |
18243 | current_stub_contents = | |
18244 | push_thumb2_insn32 (htab, output_bfd, current_stub_contents, | |
18245 | create_instruction_branch_absolute | |
82188b29 | 18246 | (initial_insn_addr - current_stub_contents)); |
a504d23a LA |
18247 | } |
18248 | ||
18249 | /* Fill the remaining of the stub with deterministic contents. */ | |
18250 | current_stub_contents = | |
18251 | stm32l4xx_fill_stub_udf (htab, output_bfd, | |
18252 | base_stub_contents, current_stub_contents, | |
18253 | base_stub_contents + | |
18254 | STM32L4XX_ERRATUM_VLDM_VENEER_SIZE); | |
18255 | } | |
18256 | ||
18257 | static void | |
18258 | stm32l4xx_create_replacing_stub (struct elf32_arm_link_hash_table * htab, | |
18259 | bfd * output_bfd, | |
18260 | const insn32 wrong_insn, | |
18261 | const bfd_byte *const wrong_insn_addr, | |
18262 | bfd_byte *const stub_contents) | |
18263 | { | |
18264 | if (is_thumb2_ldmia (wrong_insn)) | |
18265 | stm32l4xx_create_replacing_stub_ldmia (htab, output_bfd, | |
18266 | wrong_insn, wrong_insn_addr, | |
18267 | stub_contents); | |
18268 | else if (is_thumb2_ldmdb (wrong_insn)) | |
18269 | stm32l4xx_create_replacing_stub_ldmdb (htab, output_bfd, | |
18270 | wrong_insn, wrong_insn_addr, | |
18271 | stub_contents); | |
18272 | else if (is_thumb2_vldm (wrong_insn)) | |
18273 | stm32l4xx_create_replacing_stub_vldm (htab, output_bfd, | |
18274 | wrong_insn, wrong_insn_addr, | |
18275 | stub_contents); | |
18276 | } | |
18277 | ||
18278 | /* End of stm32l4xx work-around. */ | |
18279 | ||
18280 | ||
e489d0ae PB |
18281 | /* Do code byteswapping. Return FALSE afterwards so that the section is |
18282 | written out as normal. */ | |
18283 | ||
18284 | static bfd_boolean | |
c7b8f16e | 18285 | elf32_arm_write_section (bfd *output_bfd, |
8029a119 NC |
18286 | struct bfd_link_info *link_info, |
18287 | asection *sec, | |
e489d0ae PB |
18288 | bfd_byte *contents) |
18289 | { | |
48229727 | 18290 | unsigned int mapcount, errcount; |
8e3de13a | 18291 | _arm_elf_section_data *arm_data; |
c7b8f16e | 18292 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); |
e489d0ae | 18293 | elf32_arm_section_map *map; |
c7b8f16e | 18294 | elf32_vfp11_erratum_list *errnode; |
a504d23a | 18295 | elf32_stm32l4xx_erratum_list *stm32l4xx_errnode; |
e489d0ae PB |
18296 | bfd_vma ptr; |
18297 | bfd_vma end; | |
c7b8f16e | 18298 | bfd_vma offset = sec->output_section->vma + sec->output_offset; |
e489d0ae | 18299 | bfd_byte tmp; |
48229727 | 18300 | unsigned int i; |
57e8b36a | 18301 | |
4dfe6ac6 NC |
18302 | if (globals == NULL) |
18303 | return FALSE; | |
18304 | ||
8e3de13a NC |
18305 | /* If this section has not been allocated an _arm_elf_section_data |
18306 | structure then we cannot record anything. */ | |
18307 | arm_data = get_arm_elf_section_data (sec); | |
18308 | if (arm_data == NULL) | |
18309 | return FALSE; | |
18310 | ||
18311 | mapcount = arm_data->mapcount; | |
18312 | map = arm_data->map; | |
c7b8f16e JB |
18313 | errcount = arm_data->erratumcount; |
18314 | ||
18315 | if (errcount != 0) | |
18316 | { | |
18317 | unsigned int endianflip = bfd_big_endian (output_bfd) ? 3 : 0; | |
18318 | ||
18319 | for (errnode = arm_data->erratumlist; errnode != 0; | |
99059e56 RM |
18320 | errnode = errnode->next) |
18321 | { | |
18322 | bfd_vma target = errnode->vma - offset; | |
18323 | ||
18324 | switch (errnode->type) | |
18325 | { | |
18326 | case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER: | |
18327 | { | |
18328 | bfd_vma branch_to_veneer; | |
18329 | /* Original condition code of instruction, plus bit mask for | |
18330 | ARM B instruction. */ | |
18331 | unsigned int insn = (errnode->u.b.vfp_insn & 0xf0000000) | |
18332 | | 0x0a000000; | |
c7b8f16e JB |
18333 | |
18334 | /* The instruction is before the label. */ | |
91d6fa6a | 18335 | target -= 4; |
c7b8f16e JB |
18336 | |
18337 | /* Above offset included in -4 below. */ | |
18338 | branch_to_veneer = errnode->u.b.veneer->vma | |
99059e56 | 18339 | - errnode->vma - 4; |
c7b8f16e JB |
18340 | |
18341 | if ((signed) branch_to_veneer < -(1 << 25) | |
18342 | || (signed) branch_to_veneer >= (1 << 25)) | |
18343 | (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of " | |
18344 | "range"), output_bfd); | |
18345 | ||
99059e56 RM |
18346 | insn |= (branch_to_veneer >> 2) & 0xffffff; |
18347 | contents[endianflip ^ target] = insn & 0xff; | |
18348 | contents[endianflip ^ (target + 1)] = (insn >> 8) & 0xff; | |
18349 | contents[endianflip ^ (target + 2)] = (insn >> 16) & 0xff; | |
18350 | contents[endianflip ^ (target + 3)] = (insn >> 24) & 0xff; | |
18351 | } | |
18352 | break; | |
c7b8f16e JB |
18353 | |
18354 | case VFP11_ERRATUM_ARM_VENEER: | |
99059e56 RM |
18355 | { |
18356 | bfd_vma branch_from_veneer; | |
18357 | unsigned int insn; | |
c7b8f16e | 18358 | |
99059e56 RM |
18359 | /* Take size of veneer into account. */ |
18360 | branch_from_veneer = errnode->u.v.branch->vma | |
18361 | - errnode->vma - 12; | |
c7b8f16e JB |
18362 | |
18363 | if ((signed) branch_from_veneer < -(1 << 25) | |
18364 | || (signed) branch_from_veneer >= (1 << 25)) | |
18365 | (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of " | |
18366 | "range"), output_bfd); | |
18367 | ||
99059e56 RM |
18368 | /* Original instruction. */ |
18369 | insn = errnode->u.v.branch->u.b.vfp_insn; | |
18370 | contents[endianflip ^ target] = insn & 0xff; | |
18371 | contents[endianflip ^ (target + 1)] = (insn >> 8) & 0xff; | |
18372 | contents[endianflip ^ (target + 2)] = (insn >> 16) & 0xff; | |
18373 | contents[endianflip ^ (target + 3)] = (insn >> 24) & 0xff; | |
18374 | ||
18375 | /* Branch back to insn after original insn. */ | |
18376 | insn = 0xea000000 | ((branch_from_veneer >> 2) & 0xffffff); | |
18377 | contents[endianflip ^ (target + 4)] = insn & 0xff; | |
18378 | contents[endianflip ^ (target + 5)] = (insn >> 8) & 0xff; | |
18379 | contents[endianflip ^ (target + 6)] = (insn >> 16) & 0xff; | |
18380 | contents[endianflip ^ (target + 7)] = (insn >> 24) & 0xff; | |
18381 | } | |
18382 | break; | |
c7b8f16e | 18383 | |
99059e56 RM |
18384 | default: |
18385 | abort (); | |
18386 | } | |
18387 | } | |
c7b8f16e | 18388 | } |
e489d0ae | 18389 | |
a504d23a LA |
18390 | if (arm_data->stm32l4xx_erratumcount != 0) |
18391 | { | |
18392 | for (stm32l4xx_errnode = arm_data->stm32l4xx_erratumlist; | |
18393 | stm32l4xx_errnode != 0; | |
18394 | stm32l4xx_errnode = stm32l4xx_errnode->next) | |
18395 | { | |
18396 | bfd_vma target = stm32l4xx_errnode->vma - offset; | |
18397 | ||
18398 | switch (stm32l4xx_errnode->type) | |
18399 | { | |
18400 | case STM32L4XX_ERRATUM_BRANCH_TO_VENEER: | |
18401 | { | |
18402 | unsigned int insn; | |
18403 | bfd_vma branch_to_veneer = | |
18404 | stm32l4xx_errnode->u.b.veneer->vma - stm32l4xx_errnode->vma; | |
18405 | ||
18406 | if ((signed) branch_to_veneer < -(1 << 24) | |
18407 | || (signed) branch_to_veneer >= (1 << 24)) | |
18408 | { | |
18409 | bfd_vma out_of_range = | |
18410 | ((signed) branch_to_veneer < -(1 << 24)) ? | |
18411 | - branch_to_veneer - (1 << 24) : | |
18412 | ((signed) branch_to_veneer >= (1 << 24)) ? | |
18413 | branch_to_veneer - (1 << 24) : 0; | |
18414 | ||
18415 | (*_bfd_error_handler) | |
18416 | (_("%B(%#x): error: Cannot create STM32L4XX veneer. " | |
eee926f2 | 18417 | "Jump out of range by %ld bytes. " |
a504d23a LA |
18418 | "Cannot encode branch instruction. "), |
18419 | output_bfd, | |
eee926f2 | 18420 | (long) (stm32l4xx_errnode->vma - 4), |
a504d23a LA |
18421 | out_of_range); |
18422 | continue; | |
18423 | } | |
18424 | ||
18425 | insn = create_instruction_branch_absolute | |
82188b29 | 18426 | (stm32l4xx_errnode->u.b.veneer->vma - stm32l4xx_errnode->vma); |
a504d23a LA |
18427 | |
18428 | /* The instruction is before the label. */ | |
18429 | target -= 4; | |
18430 | ||
18431 | put_thumb2_insn (globals, output_bfd, | |
18432 | (bfd_vma) insn, contents + target); | |
18433 | } | |
18434 | break; | |
18435 | ||
18436 | case STM32L4XX_ERRATUM_VENEER: | |
18437 | { | |
82188b29 NC |
18438 | bfd_byte * veneer; |
18439 | bfd_byte * veneer_r; | |
a504d23a LA |
18440 | unsigned int insn; |
18441 | ||
82188b29 NC |
18442 | veneer = contents + target; |
18443 | veneer_r = veneer | |
18444 | + stm32l4xx_errnode->u.b.veneer->vma | |
18445 | - stm32l4xx_errnode->vma - 4; | |
a504d23a LA |
18446 | |
18447 | if ((signed) (veneer_r - veneer - | |
18448 | STM32L4XX_ERRATUM_VLDM_VENEER_SIZE > | |
18449 | STM32L4XX_ERRATUM_LDM_VENEER_SIZE ? | |
18450 | STM32L4XX_ERRATUM_VLDM_VENEER_SIZE : | |
18451 | STM32L4XX_ERRATUM_LDM_VENEER_SIZE) < -(1 << 24) | |
18452 | || (signed) (veneer_r - veneer) >= (1 << 24)) | |
18453 | { | |
18454 | (*_bfd_error_handler) (_("%B: error: Cannot create STM32L4XX " | |
18455 | "veneer."), output_bfd); | |
18456 | continue; | |
18457 | } | |
18458 | ||
18459 | /* Original instruction. */ | |
18460 | insn = stm32l4xx_errnode->u.v.branch->u.b.insn; | |
18461 | ||
18462 | stm32l4xx_create_replacing_stub | |
18463 | (globals, output_bfd, insn, (void*)veneer_r, (void*)veneer); | |
18464 | } | |
18465 | break; | |
18466 | ||
18467 | default: | |
18468 | abort (); | |
18469 | } | |
18470 | } | |
18471 | } | |
18472 | ||
2468f9c9 PB |
18473 | if (arm_data->elf.this_hdr.sh_type == SHT_ARM_EXIDX) |
18474 | { | |
18475 | arm_unwind_table_edit *edit_node | |
99059e56 | 18476 | = arm_data->u.exidx.unwind_edit_list; |
2468f9c9 | 18477 | /* Now, sec->size is the size of the section we will write. The original |
99059e56 | 18478 | size (before we merged duplicate entries and inserted EXIDX_CANTUNWIND |
2468f9c9 PB |
18479 | markers) was sec->rawsize. (This isn't the case if we perform no |
18480 | edits, then rawsize will be zero and we should use size). */ | |
21d799b5 | 18481 | bfd_byte *edited_contents = (bfd_byte *) bfd_malloc (sec->size); |
2468f9c9 PB |
18482 | unsigned int input_size = sec->rawsize ? sec->rawsize : sec->size; |
18483 | unsigned int in_index, out_index; | |
18484 | bfd_vma add_to_offsets = 0; | |
18485 | ||
18486 | for (in_index = 0, out_index = 0; in_index * 8 < input_size || edit_node;) | |
99059e56 | 18487 | { |
2468f9c9 PB |
18488 | if (edit_node) |
18489 | { | |
18490 | unsigned int edit_index = edit_node->index; | |
b38cadfb | 18491 | |
2468f9c9 | 18492 | if (in_index < edit_index && in_index * 8 < input_size) |
99059e56 | 18493 | { |
2468f9c9 PB |
18494 | copy_exidx_entry (output_bfd, edited_contents + out_index * 8, |
18495 | contents + in_index * 8, add_to_offsets); | |
18496 | out_index++; | |
18497 | in_index++; | |
18498 | } | |
18499 | else if (in_index == edit_index | |
18500 | || (in_index * 8 >= input_size | |
18501 | && edit_index == UINT_MAX)) | |
99059e56 | 18502 | { |
2468f9c9 PB |
18503 | switch (edit_node->type) |
18504 | { | |
18505 | case DELETE_EXIDX_ENTRY: | |
18506 | in_index++; | |
18507 | add_to_offsets += 8; | |
18508 | break; | |
b38cadfb | 18509 | |
2468f9c9 PB |
18510 | case INSERT_EXIDX_CANTUNWIND_AT_END: |
18511 | { | |
99059e56 | 18512 | asection *text_sec = edit_node->linked_section; |
2468f9c9 PB |
18513 | bfd_vma text_offset = text_sec->output_section->vma |
18514 | + text_sec->output_offset | |
18515 | + text_sec->size; | |
18516 | bfd_vma exidx_offset = offset + out_index * 8; | |
99059e56 | 18517 | unsigned long prel31_offset; |
2468f9c9 PB |
18518 | |
18519 | /* Note: this is meant to be equivalent to an | |
18520 | R_ARM_PREL31 relocation. These synthetic | |
18521 | EXIDX_CANTUNWIND markers are not relocated by the | |
18522 | usual BFD method. */ | |
18523 | prel31_offset = (text_offset - exidx_offset) | |
18524 | & 0x7ffffffful; | |
491d01d3 YU |
18525 | if (bfd_link_relocatable (link_info)) |
18526 | { | |
18527 | /* Here relocation for new EXIDX_CANTUNWIND is | |
18528 | created, so there is no need to | |
18529 | adjust offset by hand. */ | |
18530 | prel31_offset = text_sec->output_offset | |
18531 | + text_sec->size; | |
491d01d3 | 18532 | } |
2468f9c9 PB |
18533 | |
18534 | /* First address we can't unwind. */ | |
18535 | bfd_put_32 (output_bfd, prel31_offset, | |
18536 | &edited_contents[out_index * 8]); | |
18537 | ||
18538 | /* Code for EXIDX_CANTUNWIND. */ | |
18539 | bfd_put_32 (output_bfd, 0x1, | |
18540 | &edited_contents[out_index * 8 + 4]); | |
18541 | ||
18542 | out_index++; | |
18543 | add_to_offsets -= 8; | |
18544 | } | |
18545 | break; | |
18546 | } | |
b38cadfb | 18547 | |
2468f9c9 PB |
18548 | edit_node = edit_node->next; |
18549 | } | |
18550 | } | |
18551 | else | |
18552 | { | |
18553 | /* No more edits, copy remaining entries verbatim. */ | |
18554 | copy_exidx_entry (output_bfd, edited_contents + out_index * 8, | |
18555 | contents + in_index * 8, add_to_offsets); | |
18556 | out_index++; | |
18557 | in_index++; | |
18558 | } | |
18559 | } | |
18560 | ||
18561 | if (!(sec->flags & SEC_EXCLUDE) && !(sec->flags & SEC_NEVER_LOAD)) | |
18562 | bfd_set_section_contents (output_bfd, sec->output_section, | |
18563 | edited_contents, | |
18564 | (file_ptr) sec->output_offset, sec->size); | |
18565 | ||
18566 | return TRUE; | |
18567 | } | |
18568 | ||
48229727 JB |
18569 | /* Fix code to point to Cortex-A8 erratum stubs. */ |
18570 | if (globals->fix_cortex_a8) | |
18571 | { | |
18572 | struct a8_branch_to_stub_data data; | |
18573 | ||
18574 | data.writing_section = sec; | |
18575 | data.contents = contents; | |
18576 | ||
a504d23a LA |
18577 | bfd_hash_traverse (& globals->stub_hash_table, make_branch_to_a8_stub, |
18578 | & data); | |
48229727 JB |
18579 | } |
18580 | ||
e489d0ae PB |
18581 | if (mapcount == 0) |
18582 | return FALSE; | |
18583 | ||
c7b8f16e | 18584 | if (globals->byteswap_code) |
e489d0ae | 18585 | { |
c7b8f16e | 18586 | qsort (map, mapcount, sizeof (* map), elf32_arm_compare_mapping); |
57e8b36a | 18587 | |
c7b8f16e JB |
18588 | ptr = map[0].vma; |
18589 | for (i = 0; i < mapcount; i++) | |
99059e56 RM |
18590 | { |
18591 | if (i == mapcount - 1) | |
c7b8f16e | 18592 | end = sec->size; |
99059e56 RM |
18593 | else |
18594 | end = map[i + 1].vma; | |
e489d0ae | 18595 | |
99059e56 | 18596 | switch (map[i].type) |
e489d0ae | 18597 | { |
c7b8f16e JB |
18598 | case 'a': |
18599 | /* Byte swap code words. */ | |
18600 | while (ptr + 3 < end) | |
99059e56 RM |
18601 | { |
18602 | tmp = contents[ptr]; | |
18603 | contents[ptr] = contents[ptr + 3]; | |
18604 | contents[ptr + 3] = tmp; | |
18605 | tmp = contents[ptr + 1]; | |
18606 | contents[ptr + 1] = contents[ptr + 2]; | |
18607 | contents[ptr + 2] = tmp; | |
18608 | ptr += 4; | |
18609 | } | |
c7b8f16e | 18610 | break; |
e489d0ae | 18611 | |
c7b8f16e JB |
18612 | case 't': |
18613 | /* Byte swap code halfwords. */ | |
18614 | while (ptr + 1 < end) | |
99059e56 RM |
18615 | { |
18616 | tmp = contents[ptr]; | |
18617 | contents[ptr] = contents[ptr + 1]; | |
18618 | contents[ptr + 1] = tmp; | |
18619 | ptr += 2; | |
18620 | } | |
c7b8f16e JB |
18621 | break; |
18622 | ||
18623 | case 'd': | |
18624 | /* Leave data alone. */ | |
18625 | break; | |
18626 | } | |
99059e56 RM |
18627 | ptr = end; |
18628 | } | |
e489d0ae | 18629 | } |
8e3de13a | 18630 | |
93204d3a | 18631 | free (map); |
47b2e99c | 18632 | arm_data->mapcount = -1; |
c7b8f16e | 18633 | arm_data->mapsize = 0; |
8e3de13a | 18634 | arm_data->map = NULL; |
8e3de13a | 18635 | |
e489d0ae PB |
18636 | return FALSE; |
18637 | } | |
18638 | ||
0beaef2b PB |
18639 | /* Mangle thumb function symbols as we read them in. */ |
18640 | ||
8384fb8f | 18641 | static bfd_boolean |
0beaef2b PB |
18642 | elf32_arm_swap_symbol_in (bfd * abfd, |
18643 | const void *psrc, | |
18644 | const void *pshn, | |
18645 | Elf_Internal_Sym *dst) | |
18646 | { | |
4ba2ef8f TP |
18647 | Elf_Internal_Shdr *symtab_hdr; |
18648 | const char *name = NULL; | |
18649 | ||
8384fb8f AM |
18650 | if (!bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst)) |
18651 | return FALSE; | |
39d911fc | 18652 | dst->st_target_internal = 0; |
0beaef2b PB |
18653 | |
18654 | /* New EABI objects mark thumb function symbols by setting the low bit of | |
35fc36a8 | 18655 | the address. */ |
63e1a0fc PB |
18656 | if (ELF_ST_TYPE (dst->st_info) == STT_FUNC |
18657 | || ELF_ST_TYPE (dst->st_info) == STT_GNU_IFUNC) | |
0beaef2b | 18658 | { |
63e1a0fc PB |
18659 | if (dst->st_value & 1) |
18660 | { | |
18661 | dst->st_value &= ~(bfd_vma) 1; | |
39d911fc TP |
18662 | ARM_SET_SYM_BRANCH_TYPE (dst->st_target_internal, |
18663 | ST_BRANCH_TO_THUMB); | |
63e1a0fc PB |
18664 | } |
18665 | else | |
39d911fc | 18666 | ARM_SET_SYM_BRANCH_TYPE (dst->st_target_internal, ST_BRANCH_TO_ARM); |
35fc36a8 RS |
18667 | } |
18668 | else if (ELF_ST_TYPE (dst->st_info) == STT_ARM_TFUNC) | |
18669 | { | |
18670 | dst->st_info = ELF_ST_INFO (ELF_ST_BIND (dst->st_info), STT_FUNC); | |
39d911fc | 18671 | ARM_SET_SYM_BRANCH_TYPE (dst->st_target_internal, ST_BRANCH_TO_THUMB); |
0beaef2b | 18672 | } |
35fc36a8 | 18673 | else if (ELF_ST_TYPE (dst->st_info) == STT_SECTION) |
39d911fc | 18674 | ARM_SET_SYM_BRANCH_TYPE (dst->st_target_internal, ST_BRANCH_LONG); |
35fc36a8 | 18675 | else |
39d911fc | 18676 | ARM_SET_SYM_BRANCH_TYPE (dst->st_target_internal, ST_BRANCH_UNKNOWN); |
35fc36a8 | 18677 | |
4ba2ef8f TP |
18678 | /* Mark CMSE special symbols. */ |
18679 | symtab_hdr = & elf_symtab_hdr (abfd); | |
18680 | if (symtab_hdr->sh_size) | |
18681 | name = bfd_elf_sym_name (abfd, symtab_hdr, dst, NULL); | |
18682 | if (name && CONST_STRNEQ (name, CMSE_PREFIX)) | |
18683 | ARM_SET_SYM_CMSE_SPCL (dst->st_target_internal); | |
18684 | ||
8384fb8f | 18685 | return TRUE; |
0beaef2b PB |
18686 | } |
18687 | ||
18688 | ||
18689 | /* Mangle thumb function symbols as we write them out. */ | |
18690 | ||
18691 | static void | |
18692 | elf32_arm_swap_symbol_out (bfd *abfd, | |
18693 | const Elf_Internal_Sym *src, | |
18694 | void *cdst, | |
18695 | void *shndx) | |
18696 | { | |
18697 | Elf_Internal_Sym newsym; | |
18698 | ||
18699 | /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit | |
18700 | of the address set, as per the new EABI. We do this unconditionally | |
18701 | because objcopy does not set the elf header flags until after | |
18702 | it writes out the symbol table. */ | |
39d911fc | 18703 | if (ARM_GET_SYM_BRANCH_TYPE (src->st_target_internal) == ST_BRANCH_TO_THUMB) |
0beaef2b PB |
18704 | { |
18705 | newsym = *src; | |
34e77a92 RS |
18706 | if (ELF_ST_TYPE (src->st_info) != STT_GNU_IFUNC) |
18707 | newsym.st_info = ELF_ST_INFO (ELF_ST_BIND (src->st_info), STT_FUNC); | |
0fa3dcad | 18708 | if (newsym.st_shndx != SHN_UNDEF) |
99059e56 RM |
18709 | { |
18710 | /* Do this only for defined symbols. At link type, the static | |
18711 | linker will simulate the work of dynamic linker of resolving | |
18712 | symbols and will carry over the thumbness of found symbols to | |
18713 | the output symbol table. It's not clear how it happens, but | |
18714 | the thumbness of undefined symbols can well be different at | |
18715 | runtime, and writing '1' for them will be confusing for users | |
18716 | and possibly for dynamic linker itself. | |
18717 | */ | |
18718 | newsym.st_value |= 1; | |
18719 | } | |
906e58ca | 18720 | |
0beaef2b PB |
18721 | src = &newsym; |
18722 | } | |
18723 | bfd_elf32_swap_symbol_out (abfd, src, cdst, shndx); | |
18724 | } | |
18725 | ||
b294bdf8 MM |
18726 | /* Add the PT_ARM_EXIDX program header. */ |
18727 | ||
18728 | static bfd_boolean | |
906e58ca | 18729 | elf32_arm_modify_segment_map (bfd *abfd, |
b294bdf8 MM |
18730 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
18731 | { | |
18732 | struct elf_segment_map *m; | |
18733 | asection *sec; | |
18734 | ||
18735 | sec = bfd_get_section_by_name (abfd, ".ARM.exidx"); | |
18736 | if (sec != NULL && (sec->flags & SEC_LOAD) != 0) | |
18737 | { | |
18738 | /* If there is already a PT_ARM_EXIDX header, then we do not | |
18739 | want to add another one. This situation arises when running | |
18740 | "strip"; the input binary already has the header. */ | |
12bd6957 | 18741 | m = elf_seg_map (abfd); |
b294bdf8 MM |
18742 | while (m && m->p_type != PT_ARM_EXIDX) |
18743 | m = m->next; | |
18744 | if (!m) | |
18745 | { | |
21d799b5 | 18746 | m = (struct elf_segment_map *) |
99059e56 | 18747 | bfd_zalloc (abfd, sizeof (struct elf_segment_map)); |
b294bdf8 MM |
18748 | if (m == NULL) |
18749 | return FALSE; | |
18750 | m->p_type = PT_ARM_EXIDX; | |
18751 | m->count = 1; | |
18752 | m->sections[0] = sec; | |
18753 | ||
12bd6957 AM |
18754 | m->next = elf_seg_map (abfd); |
18755 | elf_seg_map (abfd) = m; | |
b294bdf8 MM |
18756 | } |
18757 | } | |
18758 | ||
18759 | return TRUE; | |
18760 | } | |
18761 | ||
18762 | /* We may add a PT_ARM_EXIDX program header. */ | |
18763 | ||
18764 | static int | |
a6b96beb AM |
18765 | elf32_arm_additional_program_headers (bfd *abfd, |
18766 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
b294bdf8 MM |
18767 | { |
18768 | asection *sec; | |
18769 | ||
18770 | sec = bfd_get_section_by_name (abfd, ".ARM.exidx"); | |
18771 | if (sec != NULL && (sec->flags & SEC_LOAD) != 0) | |
18772 | return 1; | |
18773 | else | |
18774 | return 0; | |
18775 | } | |
18776 | ||
34e77a92 RS |
18777 | /* Hook called by the linker routine which adds symbols from an object |
18778 | file. */ | |
18779 | ||
18780 | static bfd_boolean | |
18781 | elf32_arm_add_symbol_hook (bfd *abfd, struct bfd_link_info *info, | |
18782 | Elf_Internal_Sym *sym, const char **namep, | |
18783 | flagword *flagsp, asection **secp, bfd_vma *valp) | |
18784 | { | |
a43942db | 18785 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC |
f1885d1e AM |
18786 | && (abfd->flags & DYNAMIC) == 0 |
18787 | && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour) | |
a43942db | 18788 | elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc; |
34e77a92 | 18789 | |
c792917c NC |
18790 | if (elf32_arm_hash_table (info) == NULL) |
18791 | return FALSE; | |
18792 | ||
34e77a92 RS |
18793 | if (elf32_arm_hash_table (info)->vxworks_p |
18794 | && !elf_vxworks_add_symbol_hook (abfd, info, sym, namep, | |
18795 | flagsp, secp, valp)) | |
18796 | return FALSE; | |
18797 | ||
18798 | return TRUE; | |
18799 | } | |
18800 | ||
0beaef2b | 18801 | /* We use this to override swap_symbol_in and swap_symbol_out. */ |
906e58ca NC |
18802 | const struct elf_size_info elf32_arm_size_info = |
18803 | { | |
0beaef2b PB |
18804 | sizeof (Elf32_External_Ehdr), |
18805 | sizeof (Elf32_External_Phdr), | |
18806 | sizeof (Elf32_External_Shdr), | |
18807 | sizeof (Elf32_External_Rel), | |
18808 | sizeof (Elf32_External_Rela), | |
18809 | sizeof (Elf32_External_Sym), | |
18810 | sizeof (Elf32_External_Dyn), | |
18811 | sizeof (Elf_External_Note), | |
18812 | 4, | |
18813 | 1, | |
18814 | 32, 2, | |
18815 | ELFCLASS32, EV_CURRENT, | |
18816 | bfd_elf32_write_out_phdrs, | |
18817 | bfd_elf32_write_shdrs_and_ehdr, | |
1489a3a0 | 18818 | bfd_elf32_checksum_contents, |
0beaef2b PB |
18819 | bfd_elf32_write_relocs, |
18820 | elf32_arm_swap_symbol_in, | |
18821 | elf32_arm_swap_symbol_out, | |
18822 | bfd_elf32_slurp_reloc_table, | |
18823 | bfd_elf32_slurp_symbol_table, | |
18824 | bfd_elf32_swap_dyn_in, | |
18825 | bfd_elf32_swap_dyn_out, | |
18826 | bfd_elf32_swap_reloc_in, | |
18827 | bfd_elf32_swap_reloc_out, | |
18828 | bfd_elf32_swap_reloca_in, | |
18829 | bfd_elf32_swap_reloca_out | |
18830 | }; | |
18831 | ||
685e70ae VK |
18832 | static bfd_vma |
18833 | read_code32 (const bfd *abfd, const bfd_byte *addr) | |
18834 | { | |
18835 | /* V7 BE8 code is always little endian. */ | |
18836 | if ((elf_elfheader (abfd)->e_flags & EF_ARM_BE8) != 0) | |
18837 | return bfd_getl32 (addr); | |
18838 | ||
18839 | return bfd_get_32 (abfd, addr); | |
18840 | } | |
18841 | ||
18842 | static bfd_vma | |
18843 | read_code16 (const bfd *abfd, const bfd_byte *addr) | |
18844 | { | |
18845 | /* V7 BE8 code is always little endian. */ | |
18846 | if ((elf_elfheader (abfd)->e_flags & EF_ARM_BE8) != 0) | |
18847 | return bfd_getl16 (addr); | |
18848 | ||
18849 | return bfd_get_16 (abfd, addr); | |
18850 | } | |
18851 | ||
6a631e86 YG |
18852 | /* Return size of plt0 entry starting at ADDR |
18853 | or (bfd_vma) -1 if size can not be determined. */ | |
18854 | ||
18855 | static bfd_vma | |
18856 | elf32_arm_plt0_size (const bfd *abfd, const bfd_byte *addr) | |
18857 | { | |
18858 | bfd_vma first_word; | |
18859 | bfd_vma plt0_size; | |
18860 | ||
685e70ae | 18861 | first_word = read_code32 (abfd, addr); |
6a631e86 YG |
18862 | |
18863 | if (first_word == elf32_arm_plt0_entry[0]) | |
18864 | plt0_size = 4 * ARRAY_SIZE (elf32_arm_plt0_entry); | |
18865 | else if (first_word == elf32_thumb2_plt0_entry[0]) | |
18866 | plt0_size = 4 * ARRAY_SIZE (elf32_thumb2_plt0_entry); | |
18867 | else | |
18868 | /* We don't yet handle this PLT format. */ | |
18869 | return (bfd_vma) -1; | |
18870 | ||
18871 | return plt0_size; | |
18872 | } | |
18873 | ||
18874 | /* Return size of plt entry starting at offset OFFSET | |
18875 | of plt section located at address START | |
18876 | or (bfd_vma) -1 if size can not be determined. */ | |
18877 | ||
18878 | static bfd_vma | |
18879 | elf32_arm_plt_size (const bfd *abfd, const bfd_byte *start, bfd_vma offset) | |
18880 | { | |
18881 | bfd_vma first_insn; | |
18882 | bfd_vma plt_size = 0; | |
18883 | const bfd_byte *addr = start + offset; | |
18884 | ||
18885 | /* PLT entry size if fixed on Thumb-only platforms. */ | |
685e70ae | 18886 | if (read_code32 (abfd, start) == elf32_thumb2_plt0_entry[0]) |
6a631e86 YG |
18887 | return 4 * ARRAY_SIZE (elf32_thumb2_plt_entry); |
18888 | ||
18889 | /* Respect Thumb stub if necessary. */ | |
685e70ae | 18890 | if (read_code16 (abfd, addr) == elf32_arm_plt_thumb_stub[0]) |
6a631e86 YG |
18891 | { |
18892 | plt_size += 2 * ARRAY_SIZE(elf32_arm_plt_thumb_stub); | |
18893 | } | |
18894 | ||
18895 | /* Strip immediate from first add. */ | |
685e70ae | 18896 | first_insn = read_code32 (abfd, addr + plt_size) & 0xffffff00; |
6a631e86 YG |
18897 | |
18898 | #ifdef FOUR_WORD_PLT | |
18899 | if (first_insn == elf32_arm_plt_entry[0]) | |
18900 | plt_size += 4 * ARRAY_SIZE (elf32_arm_plt_entry); | |
18901 | #else | |
18902 | if (first_insn == elf32_arm_plt_entry_long[0]) | |
18903 | plt_size += 4 * ARRAY_SIZE (elf32_arm_plt_entry_long); | |
18904 | else if (first_insn == elf32_arm_plt_entry_short[0]) | |
18905 | plt_size += 4 * ARRAY_SIZE (elf32_arm_plt_entry_short); | |
18906 | #endif | |
18907 | else | |
18908 | /* We don't yet handle this PLT format. */ | |
18909 | return (bfd_vma) -1; | |
18910 | ||
18911 | return plt_size; | |
18912 | } | |
18913 | ||
18914 | /* Implementation is shamelessly borrowed from _bfd_elf_get_synthetic_symtab. */ | |
18915 | ||
18916 | static long | |
18917 | elf32_arm_get_synthetic_symtab (bfd *abfd, | |
18918 | long symcount ATTRIBUTE_UNUSED, | |
18919 | asymbol **syms ATTRIBUTE_UNUSED, | |
18920 | long dynsymcount, | |
18921 | asymbol **dynsyms, | |
18922 | asymbol **ret) | |
18923 | { | |
18924 | asection *relplt; | |
18925 | asymbol *s; | |
18926 | arelent *p; | |
18927 | long count, i, n; | |
18928 | size_t size; | |
18929 | Elf_Internal_Shdr *hdr; | |
18930 | char *names; | |
18931 | asection *plt; | |
18932 | bfd_vma offset; | |
18933 | bfd_byte *data; | |
18934 | ||
18935 | *ret = NULL; | |
18936 | ||
18937 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) | |
18938 | return 0; | |
18939 | ||
18940 | if (dynsymcount <= 0) | |
18941 | return 0; | |
18942 | ||
18943 | relplt = bfd_get_section_by_name (abfd, ".rel.plt"); | |
18944 | if (relplt == NULL) | |
18945 | return 0; | |
18946 | ||
18947 | hdr = &elf_section_data (relplt)->this_hdr; | |
18948 | if (hdr->sh_link != elf_dynsymtab (abfd) | |
18949 | || (hdr->sh_type != SHT_REL && hdr->sh_type != SHT_RELA)) | |
18950 | return 0; | |
18951 | ||
18952 | plt = bfd_get_section_by_name (abfd, ".plt"); | |
18953 | if (plt == NULL) | |
18954 | return 0; | |
18955 | ||
18956 | if (!elf32_arm_size_info.slurp_reloc_table (abfd, relplt, dynsyms, TRUE)) | |
18957 | return -1; | |
18958 | ||
18959 | data = plt->contents; | |
18960 | if (data == NULL) | |
18961 | { | |
18962 | if (!bfd_get_full_section_contents(abfd, (asection *) plt, &data) || data == NULL) | |
18963 | return -1; | |
18964 | bfd_cache_section_contents((asection *) plt, data); | |
18965 | } | |
18966 | ||
18967 | count = relplt->size / hdr->sh_entsize; | |
18968 | size = count * sizeof (asymbol); | |
18969 | p = relplt->relocation; | |
18970 | for (i = 0; i < count; i++, p += elf32_arm_size_info.int_rels_per_ext_rel) | |
18971 | { | |
18972 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
18973 | if (p->addend != 0) | |
18974 | size += sizeof ("+0x") - 1 + 8; | |
18975 | } | |
18976 | ||
18977 | s = *ret = (asymbol *) bfd_malloc (size); | |
18978 | if (s == NULL) | |
18979 | return -1; | |
18980 | ||
18981 | offset = elf32_arm_plt0_size (abfd, data); | |
18982 | if (offset == (bfd_vma) -1) | |
18983 | return -1; | |
18984 | ||
18985 | names = (char *) (s + count); | |
18986 | p = relplt->relocation; | |
18987 | n = 0; | |
18988 | for (i = 0; i < count; i++, p += elf32_arm_size_info.int_rels_per_ext_rel) | |
18989 | { | |
18990 | size_t len; | |
18991 | ||
18992 | bfd_vma plt_size = elf32_arm_plt_size (abfd, data, offset); | |
18993 | if (plt_size == (bfd_vma) -1) | |
18994 | break; | |
18995 | ||
18996 | *s = **p->sym_ptr_ptr; | |
18997 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
18998 | we are defining a symbol, ensure one of them is set. */ | |
18999 | if ((s->flags & BSF_LOCAL) == 0) | |
19000 | s->flags |= BSF_GLOBAL; | |
19001 | s->flags |= BSF_SYNTHETIC; | |
19002 | s->section = plt; | |
19003 | s->value = offset; | |
19004 | s->name = names; | |
19005 | s->udata.p = NULL; | |
19006 | len = strlen ((*p->sym_ptr_ptr)->name); | |
19007 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
19008 | names += len; | |
19009 | if (p->addend != 0) | |
19010 | { | |
19011 | char buf[30], *a; | |
19012 | ||
19013 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
19014 | names += sizeof ("+0x") - 1; | |
19015 | bfd_sprintf_vma (abfd, buf, p->addend); | |
19016 | for (a = buf; *a == '0'; ++a) | |
19017 | ; | |
19018 | len = strlen (a); | |
19019 | memcpy (names, a, len); | |
19020 | names += len; | |
19021 | } | |
19022 | memcpy (names, "@plt", sizeof ("@plt")); | |
19023 | names += sizeof ("@plt"); | |
19024 | ++s, ++n; | |
19025 | offset += plt_size; | |
19026 | } | |
19027 | ||
19028 | return n; | |
19029 | } | |
19030 | ||
ac4c9b04 MG |
19031 | static bfd_boolean |
19032 | elf32_arm_section_flags (flagword *flags, const Elf_Internal_Shdr * hdr) | |
19033 | { | |
f0728ee3 AV |
19034 | if (hdr->sh_flags & SHF_ARM_PURECODE) |
19035 | *flags |= SEC_ELF_PURECODE; | |
ac4c9b04 MG |
19036 | return TRUE; |
19037 | } | |
19038 | ||
19039 | static flagword | |
19040 | elf32_arm_lookup_section_flags (char *flag_name) | |
19041 | { | |
f0728ee3 AV |
19042 | if (!strcmp (flag_name, "SHF_ARM_PURECODE")) |
19043 | return SHF_ARM_PURECODE; | |
ac4c9b04 MG |
19044 | |
19045 | return SEC_NO_FLAGS; | |
19046 | } | |
19047 | ||
491d01d3 YU |
19048 | static unsigned int |
19049 | elf32_arm_count_additional_relocs (asection *sec) | |
19050 | { | |
19051 | struct _arm_elf_section_data *arm_data; | |
19052 | arm_data = get_arm_elf_section_data (sec); | |
5025eb7c | 19053 | |
6342be70 | 19054 | return arm_data == NULL ? 0 : arm_data->additional_reloc_count; |
491d01d3 YU |
19055 | } |
19056 | ||
5025eb7c AO |
19057 | static unsigned int |
19058 | elf32_arm_count_output_relocs (struct bfd_link_info * info, | |
19059 | asection * o, | |
19060 | bfd_boolean rela) | |
19061 | { | |
19062 | struct bfd_elf_section_data *esdo; | |
19063 | struct bfd_link_order *p; | |
19064 | bfd_size_type count; | |
19065 | ||
19066 | esdo = elf_section_data (o->output_section); | |
19067 | if (esdo->this_hdr.sh_type != SHT_ARM_EXIDX) | |
19068 | return _bfd_elf_default_count_output_relocs (info, o, rela); | |
19069 | ||
19070 | /* PR 20595: Skip relocations for deleted exidx entries. */ | |
19071 | count = 0; | |
19072 | for (p = o->map_head.link_order; p != NULL; p = p->next) | |
19073 | { | |
19074 | struct _arm_elf_section_data *arm_data; | |
19075 | struct bfd_elf_section_data *esd; | |
19076 | arm_unwind_table_edit *edit_list; | |
19077 | Elf_Internal_Rela *relocs; | |
19078 | asection *sec; | |
19079 | bfd_size_type num_rel; | |
19080 | bfd_size_type num_rela; | |
19081 | unsigned int i; | |
19082 | ||
19083 | if (p->type == bfd_section_reloc_link_order | |
19084 | || p->type == bfd_symbol_reloc_link_order) | |
19085 | { | |
19086 | count++; | |
19087 | continue; | |
19088 | } | |
19089 | ||
19090 | sec = p->u.indirect.section; | |
19091 | arm_data = get_arm_elf_section_data (sec); | |
19092 | esd = &arm_data->elf; | |
19093 | ||
19094 | if (arm_data->additional_reloc_count) | |
19095 | count += arm_data->additional_reloc_count; | |
19096 | ||
19097 | edit_list = arm_data->u.exidx.unwind_edit_list; | |
19098 | if (!edit_list) | |
19099 | { | |
19100 | count += sec->reloc_count; | |
19101 | continue; | |
19102 | } | |
19103 | ||
19104 | relocs = _bfd_elf_link_read_relocs (sec->owner, sec, NULL, NULL, | |
19105 | info->keep_memory); | |
19106 | num_rel = esd->rel.hdr ? NUM_SHDR_ENTRIES (esd->rel.hdr) : 0; | |
19107 | num_rela = esd->rela.hdr ? NUM_SHDR_ENTRIES (esd->rela.hdr) : 0; | |
19108 | if (rela) | |
19109 | relocs += num_rel; | |
19110 | ||
19111 | for (i = 0; i < (rela ? num_rela : num_rel); i++) | |
19112 | { | |
19113 | arm_unwind_table_edit *edit_node; | |
19114 | unsigned int index; | |
19115 | ||
19116 | index = (relocs[i].r_offset - sec->vma) / 8; | |
19117 | ||
19118 | for (edit_node = edit_list; | |
19119 | edit_node->next && edit_node->next->index > index; | |
19120 | edit_node++); | |
19121 | ||
19122 | if (edit_node->type != DELETE_EXIDX_ENTRY | |
19123 | || edit_node->index != index) | |
19124 | count++; | |
19125 | } | |
19126 | } | |
19127 | ||
19128 | return count; | |
19129 | } | |
19130 | ||
5522f910 NC |
19131 | /* Called to set the sh_flags, sh_link and sh_info fields of OSECTION which |
19132 | has a type >= SHT_LOOS. Returns TRUE if these fields were initialised | |
19133 | FALSE otherwise. ISECTION is the best guess matching section from the | |
19134 | input bfd IBFD, but it might be NULL. */ | |
19135 | ||
19136 | static bfd_boolean | |
19137 | elf32_arm_copy_special_section_fields (const bfd *ibfd ATTRIBUTE_UNUSED, | |
19138 | bfd *obfd ATTRIBUTE_UNUSED, | |
19139 | const Elf_Internal_Shdr *isection ATTRIBUTE_UNUSED, | |
19140 | Elf_Internal_Shdr *osection) | |
19141 | { | |
19142 | switch (osection->sh_type) | |
19143 | { | |
19144 | case SHT_ARM_EXIDX: | |
19145 | { | |
19146 | Elf_Internal_Shdr **oheaders = elf_elfsections (obfd); | |
19147 | Elf_Internal_Shdr **iheaders = elf_elfsections (ibfd); | |
19148 | unsigned i = 0; | |
19149 | ||
19150 | osection->sh_flags = SHF_ALLOC | SHF_LINK_ORDER; | |
19151 | osection->sh_info = 0; | |
19152 | ||
19153 | /* The sh_link field must be set to the text section associated with | |
19154 | this index section. Unfortunately the ARM EHABI does not specify | |
19155 | exactly how to determine this association. Our caller does try | |
19156 | to match up OSECTION with its corresponding input section however | |
19157 | so that is a good first guess. */ | |
19158 | if (isection != NULL | |
19159 | && osection->bfd_section != NULL | |
19160 | && isection->bfd_section != NULL | |
19161 | && isection->bfd_section->output_section != NULL | |
19162 | && isection->bfd_section->output_section == osection->bfd_section | |
19163 | && iheaders != NULL | |
19164 | && isection->sh_link > 0 | |
19165 | && isection->sh_link < elf_numsections (ibfd) | |
19166 | && iheaders[isection->sh_link]->bfd_section != NULL | |
19167 | && iheaders[isection->sh_link]->bfd_section->output_section != NULL | |
19168 | ) | |
19169 | { | |
19170 | for (i = elf_numsections (obfd); i-- > 0;) | |
19171 | if (oheaders[i]->bfd_section | |
19172 | == iheaders[isection->sh_link]->bfd_section->output_section) | |
19173 | break; | |
19174 | } | |
19175 | ||
19176 | if (i == 0) | |
19177 | { | |
19178 | /* Failing that we have to find a matching section ourselves. If | |
19179 | we had the output section name available we could compare that | |
19180 | with input section names. Unfortunately we don't. So instead | |
19181 | we use a simple heuristic and look for the nearest executable | |
19182 | section before this one. */ | |
19183 | for (i = elf_numsections (obfd); i-- > 0;) | |
19184 | if (oheaders[i] == osection) | |
19185 | break; | |
19186 | if (i == 0) | |
19187 | break; | |
19188 | ||
19189 | while (i-- > 0) | |
19190 | if (oheaders[i]->sh_type == SHT_PROGBITS | |
19191 | && (oheaders[i]->sh_flags & (SHF_ALLOC | SHF_EXECINSTR)) | |
19192 | == (SHF_ALLOC | SHF_EXECINSTR)) | |
19193 | break; | |
19194 | } | |
19195 | ||
19196 | if (i) | |
19197 | { | |
19198 | osection->sh_link = i; | |
19199 | /* If the text section was part of a group | |
19200 | then the index section should be too. */ | |
19201 | if (oheaders[i]->sh_flags & SHF_GROUP) | |
19202 | osection->sh_flags |= SHF_GROUP; | |
19203 | return TRUE; | |
19204 | } | |
19205 | } | |
19206 | break; | |
19207 | ||
19208 | case SHT_ARM_PREEMPTMAP: | |
19209 | osection->sh_flags = SHF_ALLOC; | |
19210 | break; | |
19211 | ||
19212 | case SHT_ARM_ATTRIBUTES: | |
19213 | case SHT_ARM_DEBUGOVERLAY: | |
19214 | case SHT_ARM_OVERLAYSECTION: | |
19215 | default: | |
19216 | break; | |
19217 | } | |
19218 | ||
19219 | return FALSE; | |
19220 | } | |
19221 | ||
d691934d NC |
19222 | /* Returns TRUE if NAME is an ARM mapping symbol. |
19223 | Traditionally the symbols $a, $d and $t have been used. | |
19224 | The ARM ELF standard also defines $x (for A64 code). It also allows a | |
19225 | period initiated suffix to be added to the symbol: "$[adtx]\.[:sym_char]+". | |
19226 | Other tools might also produce $b (Thumb BL), $f, $p, $m and $v, but we do | |
19227 | not support them here. $t.x indicates the start of ThumbEE instructions. */ | |
19228 | ||
19229 | static bfd_boolean | |
19230 | is_arm_mapping_symbol (const char * name) | |
19231 | { | |
19232 | return name != NULL /* Paranoia. */ | |
19233 | && name[0] == '$' /* Note: if objcopy --prefix-symbols has been used then | |
19234 | the mapping symbols could have acquired a prefix. | |
19235 | We do not support this here, since such symbols no | |
19236 | longer conform to the ARM ELF ABI. */ | |
19237 | && (name[1] == 'a' || name[1] == 'd' || name[1] == 't' || name[1] == 'x') | |
19238 | && (name[2] == 0 || name[2] == '.'); | |
19239 | /* FIXME: Strictly speaking the symbol is only a valid mapping symbol if | |
19240 | any characters that follow the period are legal characters for the body | |
19241 | of a symbol's name. For now we just assume that this is the case. */ | |
19242 | } | |
19243 | ||
fca2a38f NC |
19244 | /* Make sure that mapping symbols in object files are not removed via the |
19245 | "strip --strip-unneeded" tool. These symbols are needed in order to | |
19246 | correctly generate interworking veneers, and for byte swapping code | |
19247 | regions. Once an object file has been linked, it is safe to remove the | |
19248 | symbols as they will no longer be needed. */ | |
19249 | ||
19250 | static void | |
19251 | elf32_arm_backend_symbol_processing (bfd *abfd, asymbol *sym) | |
19252 | { | |
19253 | if (((abfd->flags & (EXEC_P | DYNAMIC)) == 0) | |
fca2a38f | 19254 | && sym->section != bfd_abs_section_ptr |
d691934d | 19255 | && is_arm_mapping_symbol (sym->name)) |
fca2a38f NC |
19256 | sym->flags |= BSF_KEEP; |
19257 | } | |
19258 | ||
5025eb7c AO |
19259 | static bfd_boolean |
19260 | emit_relocs (bfd * output_bfd, | |
19261 | asection * input_section, | |
19262 | Elf_Internal_Shdr * input_rel_hdr, | |
19263 | Elf_Internal_Rela * internal_relocs, | |
19264 | struct elf_link_hash_entry ** rel_hash, | |
19265 | bfd_boolean (* fallback) (bfd *, asection *, | |
19266 | Elf_Internal_Shdr *, | |
19267 | Elf_Internal_Rela *, | |
19268 | struct elf_link_hash_entry **)) | |
19269 | { | |
19270 | _arm_elf_section_data *arm_data; | |
19271 | struct bfd_elf_section_reloc_data *output_reldata; | |
19272 | Elf_Internal_Shdr *output_rel_hdr; | |
19273 | Elf_Internal_Rela *irela; | |
19274 | Elf_Internal_Rela *irelaend; | |
19275 | asection *output_section; | |
19276 | const struct elf_backend_data *bed; | |
19277 | void (*swap_out) (bfd *, const Elf_Internal_Rela *, bfd_byte *); | |
19278 | struct bfd_elf_section_data *esdo; | |
19279 | arm_unwind_table_edit *edit_list, *edit_tail; | |
19280 | bfd_byte *erel; | |
19281 | bfd_vma offset; | |
19282 | ||
19283 | arm_data = get_arm_elf_section_data (input_section); | |
19284 | ||
19285 | if (!arm_data || arm_data->elf.this_hdr.sh_type != SHT_ARM_EXIDX) | |
19286 | goto fallback_label; | |
19287 | ||
19288 | edit_list = arm_data->u.exidx.unwind_edit_list; | |
19289 | edit_tail = arm_data->u.exidx.unwind_edit_tail; | |
19290 | ||
19291 | if (!edit_list) | |
19292 | goto fallback_label; | |
19293 | ||
19294 | output_section = input_section->output_section; | |
19295 | offset = output_section->vma + input_section->output_offset; | |
19296 | ||
19297 | bed = get_elf_backend_data (output_bfd); | |
19298 | esdo = elf_section_data (output_section); | |
19299 | if (esdo->rel.hdr && esdo->rel.hdr->sh_entsize == input_rel_hdr->sh_entsize) | |
19300 | { | |
19301 | output_reldata = &esdo->rel; | |
19302 | swap_out = bed->s->swap_reloc_out; | |
19303 | } | |
19304 | else if (esdo->rela.hdr | |
19305 | && esdo->rela.hdr->sh_entsize == input_rel_hdr->sh_entsize) | |
19306 | { | |
19307 | output_reldata = &esdo->rela; | |
19308 | swap_out = bed->s->swap_reloca_out; | |
19309 | } | |
19310 | else | |
19311 | { | |
19312 | (*_bfd_error_handler) | |
19313 | (_("%B: relocation size mismatch in %B section %A"), | |
19314 | output_bfd, input_section->owner, input_section); | |
19315 | bfd_set_error (bfd_error_wrong_format); | |
19316 | return FALSE; | |
19317 | } | |
19318 | ||
19319 | output_rel_hdr = output_reldata->hdr; | |
19320 | erel = output_rel_hdr->contents; | |
19321 | erel += output_reldata->count * input_rel_hdr->sh_entsize; | |
19322 | ||
19323 | irela = internal_relocs; | |
19324 | irelaend = irela + (NUM_SHDR_ENTRIES (input_rel_hdr) | |
19325 | * bed->s->int_rels_per_ext_rel); | |
19326 | while (irela < irelaend) | |
19327 | { | |
19328 | arm_unwind_table_edit *edit_node, *edit_next; | |
19329 | Elf_Internal_Rela rel; | |
19330 | bfd_vma bias; | |
19331 | bfd_vma index; | |
19332 | ||
19333 | index = (irela->r_offset - offset) / 8; | |
19334 | ||
19335 | bias = 0; | |
19336 | edit_node = edit_list; | |
19337 | for (edit_next = edit_list; | |
19338 | edit_next && edit_next->index <= index; | |
19339 | edit_next = edit_node->next) | |
19340 | { | |
19341 | bias++; | |
19342 | edit_node = edit_next; | |
19343 | } | |
19344 | ||
19345 | if (edit_node->type != DELETE_EXIDX_ENTRY || edit_node->index != index) | |
19346 | { | |
19347 | rel.r_offset = irela->r_offset - bias * 8; | |
19348 | rel.r_info = irela->r_info; | |
19349 | rel.r_addend = irela->r_addend; | |
19350 | ||
19351 | (*swap_out) (output_bfd, &rel, erel); | |
19352 | erel += output_rel_hdr->sh_entsize; | |
19353 | output_reldata->count++; | |
19354 | } | |
19355 | ||
19356 | irela += bed->s->int_rels_per_ext_rel; | |
19357 | } | |
19358 | ||
19359 | if (edit_tail->type == INSERT_EXIDX_CANTUNWIND_AT_END) | |
19360 | { | |
19361 | /* New relocation entity. */ | |
19362 | asection *text_sec = edit_tail->linked_section; | |
19363 | asection *text_out = text_sec->output_section; | |
19364 | bfd_vma exidx_offset = offset + input_section->size - 8; | |
19365 | Elf_Internal_Rela rel; | |
19366 | ||
19367 | rel.r_addend = 0; | |
19368 | rel.r_offset = exidx_offset; | |
19369 | rel.r_info = ELF32_R_INFO (text_out->target_index, R_ARM_PREL31); | |
19370 | (*swap_out) (output_bfd, &rel, erel); | |
19371 | output_reldata->count++; | |
19372 | } | |
19373 | ||
19374 | return TRUE; | |
19375 | ||
19376 | fallback_label: | |
19377 | return fallback (output_bfd, input_section, input_rel_hdr, | |
19378 | internal_relocs, rel_hash); | |
19379 | } | |
19380 | ||
19381 | static bfd_boolean | |
19382 | elf32_arm_emit_relocs (bfd * output_bfd, | |
19383 | asection * input_section, | |
19384 | Elf_Internal_Shdr * input_rel_hdr, | |
19385 | Elf_Internal_Rela * internal_relocs, | |
19386 | struct elf_link_hash_entry ** rel_hash) | |
19387 | { | |
19388 | return emit_relocs (output_bfd, input_section, input_rel_hdr, internal_relocs, | |
19389 | rel_hash, _bfd_elf_link_output_relocs); | |
19390 | } | |
19391 | ||
5522f910 NC |
19392 | #undef elf_backend_copy_special_section_fields |
19393 | #define elf_backend_copy_special_section_fields elf32_arm_copy_special_section_fields | |
19394 | ||
252b5132 | 19395 | #define ELF_ARCH bfd_arch_arm |
ae95ffa6 | 19396 | #define ELF_TARGET_ID ARM_ELF_DATA |
252b5132 | 19397 | #define ELF_MACHINE_CODE EM_ARM |
d0facd1b NC |
19398 | #ifdef __QNXTARGET__ |
19399 | #define ELF_MAXPAGESIZE 0x1000 | |
19400 | #else | |
7572ca89 | 19401 | #define ELF_MAXPAGESIZE 0x10000 |
d0facd1b | 19402 | #endif |
b1342370 | 19403 | #define ELF_MINPAGESIZE 0x1000 |
24718e3b | 19404 | #define ELF_COMMONPAGESIZE 0x1000 |
252b5132 | 19405 | |
ba93b8ac DJ |
19406 | #define bfd_elf32_mkobject elf32_arm_mkobject |
19407 | ||
99e4ae17 AJ |
19408 | #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data |
19409 | #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data | |
252b5132 RH |
19410 | #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags |
19411 | #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data | |
19412 | #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create | |
dc810e39 | 19413 | #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup |
b38cadfb | 19414 | #define bfd_elf32_bfd_reloc_name_lookup elf32_arm_reloc_name_lookup |
252b5132 | 19415 | #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line |
4ab527b0 | 19416 | #define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info |
e489d0ae | 19417 | #define bfd_elf32_new_section_hook elf32_arm_new_section_hook |
3c9458e9 | 19418 | #define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol |
3e6b1042 | 19419 | #define bfd_elf32_bfd_final_link elf32_arm_final_link |
6a631e86 | 19420 | #define bfd_elf32_get_synthetic_symtab elf32_arm_get_synthetic_symtab |
252b5132 | 19421 | |
5025eb7c | 19422 | #define elf_backend_emit_relocs elf32_arm_emit_relocs |
252b5132 RH |
19423 | #define elf_backend_get_symbol_type elf32_arm_get_symbol_type |
19424 | #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook | |
6a5bb875 | 19425 | #define elf_backend_gc_mark_extra_sections elf32_arm_gc_mark_extra_sections |
252b5132 RH |
19426 | #define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook |
19427 | #define elf_backend_check_relocs elf32_arm_check_relocs | |
dc810e39 | 19428 | #define elf_backend_relocate_section elf32_arm_relocate_section |
e489d0ae | 19429 | #define elf_backend_write_section elf32_arm_write_section |
252b5132 | 19430 | #define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol |
5e681ec4 | 19431 | #define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections |
252b5132 RH |
19432 | #define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol |
19433 | #define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections | |
19434 | #define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections | |
0855e32b | 19435 | #define elf_backend_always_size_sections elf32_arm_always_size_sections |
74541ad4 | 19436 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
ba96a88f | 19437 | #define elf_backend_post_process_headers elf32_arm_post_process_headers |
99e4ae17 | 19438 | #define elf_backend_reloc_type_class elf32_arm_reloc_type_class |
c178919b | 19439 | #define elf_backend_object_p elf32_arm_object_p |
40a18ebd NC |
19440 | #define elf_backend_fake_sections elf32_arm_fake_sections |
19441 | #define elf_backend_section_from_shdr elf32_arm_section_from_shdr | |
e16bb312 | 19442 | #define elf_backend_final_write_processing elf32_arm_final_write_processing |
5e681ec4 | 19443 | #define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol |
0beaef2b | 19444 | #define elf_backend_size_info elf32_arm_size_info |
b294bdf8 | 19445 | #define elf_backend_modify_segment_map elf32_arm_modify_segment_map |
906e58ca NC |
19446 | #define elf_backend_additional_program_headers elf32_arm_additional_program_headers |
19447 | #define elf_backend_output_arch_local_syms elf32_arm_output_arch_local_syms | |
54ddd295 | 19448 | #define elf_backend_filter_implib_symbols elf32_arm_filter_implib_symbols |
906e58ca | 19449 | #define elf_backend_begin_write_processing elf32_arm_begin_write_processing |
34e77a92 | 19450 | #define elf_backend_add_symbol_hook elf32_arm_add_symbol_hook |
491d01d3 | 19451 | #define elf_backend_count_additional_relocs elf32_arm_count_additional_relocs |
5025eb7c | 19452 | #define elf_backend_count_output_relocs elf32_arm_count_output_relocs |
fca2a38f | 19453 | #define elf_backend_symbol_processing elf32_arm_backend_symbol_processing |
906e58ca NC |
19454 | |
19455 | #define elf_backend_can_refcount 1 | |
19456 | #define elf_backend_can_gc_sections 1 | |
19457 | #define elf_backend_plt_readonly 1 | |
19458 | #define elf_backend_want_got_plt 1 | |
19459 | #define elf_backend_want_plt_sym 0 | |
19460 | #define elf_backend_may_use_rel_p 1 | |
19461 | #define elf_backend_may_use_rela_p 0 | |
4e7fd91e | 19462 | #define elf_backend_default_use_rela_p 0 |
252b5132 | 19463 | |
04f7c78d | 19464 | #define elf_backend_got_header_size 12 |
b68a20d6 | 19465 | #define elf_backend_extern_protected_data 1 |
04f7c78d | 19466 | |
906e58ca NC |
19467 | #undef elf_backend_obj_attrs_vendor |
19468 | #define elf_backend_obj_attrs_vendor "aeabi" | |
19469 | #undef elf_backend_obj_attrs_section | |
19470 | #define elf_backend_obj_attrs_section ".ARM.attributes" | |
19471 | #undef elf_backend_obj_attrs_arg_type | |
19472 | #define elf_backend_obj_attrs_arg_type elf32_arm_obj_attrs_arg_type | |
19473 | #undef elf_backend_obj_attrs_section_type | |
104d59d1 | 19474 | #define elf_backend_obj_attrs_section_type SHT_ARM_ATTRIBUTES |
b38cadfb NC |
19475 | #define elf_backend_obj_attrs_order elf32_arm_obj_attrs_order |
19476 | #define elf_backend_obj_attrs_handle_unknown elf32_arm_obj_attrs_handle_unknown | |
104d59d1 | 19477 | |
5025eb7c | 19478 | #undef elf_backend_section_flags |
ac4c9b04 | 19479 | #define elf_backend_section_flags elf32_arm_section_flags |
5025eb7c | 19480 | #undef elf_backend_lookup_section_flags_hook |
ac4c9b04 MG |
19481 | #define elf_backend_lookup_section_flags_hook elf32_arm_lookup_section_flags |
19482 | ||
252b5132 | 19483 | #include "elf32-target.h" |
7f266840 | 19484 | |
b38cadfb NC |
19485 | /* Native Client targets. */ |
19486 | ||
19487 | #undef TARGET_LITTLE_SYM | |
6d00b590 | 19488 | #define TARGET_LITTLE_SYM arm_elf32_nacl_le_vec |
b38cadfb NC |
19489 | #undef TARGET_LITTLE_NAME |
19490 | #define TARGET_LITTLE_NAME "elf32-littlearm-nacl" | |
19491 | #undef TARGET_BIG_SYM | |
6d00b590 | 19492 | #define TARGET_BIG_SYM arm_elf32_nacl_be_vec |
b38cadfb NC |
19493 | #undef TARGET_BIG_NAME |
19494 | #define TARGET_BIG_NAME "elf32-bigarm-nacl" | |
19495 | ||
19496 | /* Like elf32_arm_link_hash_table_create -- but overrides | |
19497 | appropriately for NaCl. */ | |
19498 | ||
19499 | static struct bfd_link_hash_table * | |
19500 | elf32_arm_nacl_link_hash_table_create (bfd *abfd) | |
19501 | { | |
19502 | struct bfd_link_hash_table *ret; | |
19503 | ||
19504 | ret = elf32_arm_link_hash_table_create (abfd); | |
19505 | if (ret) | |
19506 | { | |
19507 | struct elf32_arm_link_hash_table *htab | |
19508 | = (struct elf32_arm_link_hash_table *) ret; | |
19509 | ||
19510 | htab->nacl_p = 1; | |
19511 | ||
19512 | htab->plt_header_size = 4 * ARRAY_SIZE (elf32_arm_nacl_plt0_entry); | |
19513 | htab->plt_entry_size = 4 * ARRAY_SIZE (elf32_arm_nacl_plt_entry); | |
19514 | } | |
19515 | return ret; | |
19516 | } | |
19517 | ||
19518 | /* Since NaCl doesn't use the ARM-specific unwind format, we don't | |
19519 | really need to use elf32_arm_modify_segment_map. But we do it | |
19520 | anyway just to reduce gratuitous differences with the stock ARM backend. */ | |
19521 | ||
19522 | static bfd_boolean | |
19523 | elf32_arm_nacl_modify_segment_map (bfd *abfd, struct bfd_link_info *info) | |
19524 | { | |
19525 | return (elf32_arm_modify_segment_map (abfd, info) | |
19526 | && nacl_modify_segment_map (abfd, info)); | |
19527 | } | |
19528 | ||
887badb3 RM |
19529 | static void |
19530 | elf32_arm_nacl_final_write_processing (bfd *abfd, bfd_boolean linker) | |
19531 | { | |
19532 | elf32_arm_final_write_processing (abfd, linker); | |
19533 | nacl_final_write_processing (abfd, linker); | |
19534 | } | |
19535 | ||
6a631e86 YG |
19536 | static bfd_vma |
19537 | elf32_arm_nacl_plt_sym_val (bfd_vma i, const asection *plt, | |
19538 | const arelent *rel ATTRIBUTE_UNUSED) | |
19539 | { | |
19540 | return plt->vma | |
19541 | + 4 * (ARRAY_SIZE (elf32_arm_nacl_plt0_entry) + | |
19542 | i * ARRAY_SIZE (elf32_arm_nacl_plt_entry)); | |
19543 | } | |
887badb3 | 19544 | |
b38cadfb | 19545 | #undef elf32_bed |
6a631e86 | 19546 | #define elf32_bed elf32_arm_nacl_bed |
b38cadfb NC |
19547 | #undef bfd_elf32_bfd_link_hash_table_create |
19548 | #define bfd_elf32_bfd_link_hash_table_create \ | |
19549 | elf32_arm_nacl_link_hash_table_create | |
19550 | #undef elf_backend_plt_alignment | |
6a631e86 | 19551 | #define elf_backend_plt_alignment 4 |
b38cadfb NC |
19552 | #undef elf_backend_modify_segment_map |
19553 | #define elf_backend_modify_segment_map elf32_arm_nacl_modify_segment_map | |
19554 | #undef elf_backend_modify_program_headers | |
19555 | #define elf_backend_modify_program_headers nacl_modify_program_headers | |
887badb3 RM |
19556 | #undef elf_backend_final_write_processing |
19557 | #define elf_backend_final_write_processing elf32_arm_nacl_final_write_processing | |
6a631e86 YG |
19558 | #undef bfd_elf32_get_synthetic_symtab |
19559 | #undef elf_backend_plt_sym_val | |
19560 | #define elf_backend_plt_sym_val elf32_arm_nacl_plt_sym_val | |
5522f910 | 19561 | #undef elf_backend_copy_special_section_fields |
b38cadfb | 19562 | |
887badb3 RM |
19563 | #undef ELF_MINPAGESIZE |
19564 | #undef ELF_COMMONPAGESIZE | |
19565 | ||
b38cadfb NC |
19566 | |
19567 | #include "elf32-target.h" | |
19568 | ||
19569 | /* Reset to defaults. */ | |
19570 | #undef elf_backend_plt_alignment | |
19571 | #undef elf_backend_modify_segment_map | |
19572 | #define elf_backend_modify_segment_map elf32_arm_modify_segment_map | |
19573 | #undef elf_backend_modify_program_headers | |
887badb3 RM |
19574 | #undef elf_backend_final_write_processing |
19575 | #define elf_backend_final_write_processing elf32_arm_final_write_processing | |
19576 | #undef ELF_MINPAGESIZE | |
19577 | #define ELF_MINPAGESIZE 0x1000 | |
19578 | #undef ELF_COMMONPAGESIZE | |
19579 | #define ELF_COMMONPAGESIZE 0x1000 | |
19580 | ||
b38cadfb | 19581 | |
906e58ca | 19582 | /* VxWorks Targets. */ |
4e7fd91e | 19583 | |
906e58ca | 19584 | #undef TARGET_LITTLE_SYM |
6d00b590 | 19585 | #define TARGET_LITTLE_SYM arm_elf32_vxworks_le_vec |
906e58ca | 19586 | #undef TARGET_LITTLE_NAME |
4e7fd91e | 19587 | #define TARGET_LITTLE_NAME "elf32-littlearm-vxworks" |
906e58ca | 19588 | #undef TARGET_BIG_SYM |
6d00b590 | 19589 | #define TARGET_BIG_SYM arm_elf32_vxworks_be_vec |
906e58ca | 19590 | #undef TARGET_BIG_NAME |
4e7fd91e PB |
19591 | #define TARGET_BIG_NAME "elf32-bigarm-vxworks" |
19592 | ||
19593 | /* Like elf32_arm_link_hash_table_create -- but overrides | |
19594 | appropriately for VxWorks. */ | |
906e58ca | 19595 | |
4e7fd91e PB |
19596 | static struct bfd_link_hash_table * |
19597 | elf32_arm_vxworks_link_hash_table_create (bfd *abfd) | |
19598 | { | |
19599 | struct bfd_link_hash_table *ret; | |
19600 | ||
19601 | ret = elf32_arm_link_hash_table_create (abfd); | |
19602 | if (ret) | |
19603 | { | |
19604 | struct elf32_arm_link_hash_table *htab | |
00a97672 | 19605 | = (struct elf32_arm_link_hash_table *) ret; |
4e7fd91e | 19606 | htab->use_rel = 0; |
00a97672 | 19607 | htab->vxworks_p = 1; |
4e7fd91e PB |
19608 | } |
19609 | return ret; | |
906e58ca | 19610 | } |
4e7fd91e | 19611 | |
00a97672 RS |
19612 | static void |
19613 | elf32_arm_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker) | |
19614 | { | |
19615 | elf32_arm_final_write_processing (abfd, linker); | |
19616 | elf_vxworks_final_write_processing (abfd, linker); | |
19617 | } | |
19618 | ||
5025eb7c AO |
19619 | static bfd_boolean |
19620 | elf32_arm_vxworks_emit_relocs (bfd * output_bfd, | |
19621 | asection * input_section, | |
19622 | Elf_Internal_Shdr * input_rel_hdr, | |
19623 | Elf_Internal_Rela * internal_relocs, | |
19624 | struct elf_link_hash_entry ** rel_hash) | |
19625 | { | |
19626 | return emit_relocs (output_bfd, input_section, input_rel_hdr, internal_relocs, | |
19627 | rel_hash, elf_vxworks_emit_relocs); | |
19628 | } | |
19629 | ||
906e58ca | 19630 | #undef elf32_bed |
4e7fd91e PB |
19631 | #define elf32_bed elf32_arm_vxworks_bed |
19632 | ||
906e58ca NC |
19633 | #undef bfd_elf32_bfd_link_hash_table_create |
19634 | #define bfd_elf32_bfd_link_hash_table_create elf32_arm_vxworks_link_hash_table_create | |
906e58ca NC |
19635 | #undef elf_backend_final_write_processing |
19636 | #define elf_backend_final_write_processing elf32_arm_vxworks_final_write_processing | |
19637 | #undef elf_backend_emit_relocs | |
5025eb7c | 19638 | #define elf_backend_emit_relocs elf32_arm_vxworks_emit_relocs |
4e7fd91e | 19639 | |
906e58ca | 19640 | #undef elf_backend_may_use_rel_p |
00a97672 | 19641 | #define elf_backend_may_use_rel_p 0 |
906e58ca | 19642 | #undef elf_backend_may_use_rela_p |
00a97672 | 19643 | #define elf_backend_may_use_rela_p 1 |
906e58ca | 19644 | #undef elf_backend_default_use_rela_p |
00a97672 | 19645 | #define elf_backend_default_use_rela_p 1 |
906e58ca | 19646 | #undef elf_backend_want_plt_sym |
00a97672 | 19647 | #define elf_backend_want_plt_sym 1 |
906e58ca | 19648 | #undef ELF_MAXPAGESIZE |
00a97672 | 19649 | #define ELF_MAXPAGESIZE 0x1000 |
4e7fd91e PB |
19650 | |
19651 | #include "elf32-target.h" | |
19652 | ||
19653 | ||
21d799b5 NC |
19654 | /* Merge backend specific data from an object file to the output |
19655 | object file when linking. */ | |
19656 | ||
19657 | static bfd_boolean | |
19658 | elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd) | |
19659 | { | |
19660 | flagword out_flags; | |
19661 | flagword in_flags; | |
19662 | bfd_boolean flags_compatible = TRUE; | |
19663 | asection *sec; | |
19664 | ||
cc643b88 | 19665 | /* Check if we have the same endianness. */ |
21d799b5 NC |
19666 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) |
19667 | return FALSE; | |
19668 | ||
19669 | if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd)) | |
19670 | return TRUE; | |
19671 | ||
19672 | if (!elf32_arm_merge_eabi_attributes (ibfd, obfd)) | |
19673 | return FALSE; | |
19674 | ||
19675 | /* The input BFD must have had its flags initialised. */ | |
19676 | /* The following seems bogus to me -- The flags are initialized in | |
19677 | the assembler but I don't think an elf_flags_init field is | |
19678 | written into the object. */ | |
19679 | /* BFD_ASSERT (elf_flags_init (ibfd)); */ | |
19680 | ||
19681 | in_flags = elf_elfheader (ibfd)->e_flags; | |
19682 | out_flags = elf_elfheader (obfd)->e_flags; | |
19683 | ||
19684 | /* In theory there is no reason why we couldn't handle this. However | |
19685 | in practice it isn't even close to working and there is no real | |
19686 | reason to want it. */ | |
19687 | if (EF_ARM_EABI_VERSION (in_flags) >= EF_ARM_EABI_VER4 | |
19688 | && !(ibfd->flags & DYNAMIC) | |
19689 | && (in_flags & EF_ARM_BE8)) | |
19690 | { | |
19691 | _bfd_error_handler (_("error: %B is already in final BE8 format"), | |
19692 | ibfd); | |
19693 | return FALSE; | |
19694 | } | |
19695 | ||
19696 | if (!elf_flags_init (obfd)) | |
19697 | { | |
19698 | /* If the input is the default architecture and had the default | |
19699 | flags then do not bother setting the flags for the output | |
19700 | architecture, instead allow future merges to do this. If no | |
19701 | future merges ever set these flags then they will retain their | |
99059e56 RM |
19702 | uninitialised values, which surprise surprise, correspond |
19703 | to the default values. */ | |
21d799b5 NC |
19704 | if (bfd_get_arch_info (ibfd)->the_default |
19705 | && elf_elfheader (ibfd)->e_flags == 0) | |
19706 | return TRUE; | |
19707 | ||
19708 | elf_flags_init (obfd) = TRUE; | |
19709 | elf_elfheader (obfd)->e_flags = in_flags; | |
19710 | ||
19711 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
19712 | && bfd_get_arch_info (obfd)->the_default) | |
19713 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); | |
19714 | ||
19715 | return TRUE; | |
19716 | } | |
19717 | ||
19718 | /* Determine what should happen if the input ARM architecture | |
19719 | does not match the output ARM architecture. */ | |
19720 | if (! bfd_arm_merge_machines (ibfd, obfd)) | |
19721 | return FALSE; | |
19722 | ||
19723 | /* Identical flags must be compatible. */ | |
19724 | if (in_flags == out_flags) | |
19725 | return TRUE; | |
19726 | ||
19727 | /* Check to see if the input BFD actually contains any sections. If | |
19728 | not, its flags may not have been initialised either, but it | |
19729 | cannot actually cause any incompatiblity. Do not short-circuit | |
19730 | dynamic objects; their section list may be emptied by | |
19731 | elf_link_add_object_symbols. | |
19732 | ||
19733 | Also check to see if there are no code sections in the input. | |
19734 | In this case there is no need to check for code specific flags. | |
19735 | XXX - do we need to worry about floating-point format compatability | |
19736 | in data sections ? */ | |
19737 | if (!(ibfd->flags & DYNAMIC)) | |
19738 | { | |
19739 | bfd_boolean null_input_bfd = TRUE; | |
19740 | bfd_boolean only_data_sections = TRUE; | |
19741 | ||
19742 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
19743 | { | |
19744 | /* Ignore synthetic glue sections. */ | |
19745 | if (strcmp (sec->name, ".glue_7") | |
19746 | && strcmp (sec->name, ".glue_7t")) | |
19747 | { | |
19748 | if ((bfd_get_section_flags (ibfd, sec) | |
19749 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
19750 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
99059e56 | 19751 | only_data_sections = FALSE; |
21d799b5 NC |
19752 | |
19753 | null_input_bfd = FALSE; | |
19754 | break; | |
19755 | } | |
19756 | } | |
19757 | ||
19758 | if (null_input_bfd || only_data_sections) | |
19759 | return TRUE; | |
19760 | } | |
19761 | ||
19762 | /* Complain about various flag mismatches. */ | |
19763 | if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags), | |
19764 | EF_ARM_EABI_VERSION (out_flags))) | |
19765 | { | |
19766 | _bfd_error_handler | |
19767 | (_("error: Source object %B has EABI version %d, but target %B has EABI version %d"), | |
19768 | ibfd, obfd, | |
19769 | (in_flags & EF_ARM_EABIMASK) >> 24, | |
19770 | (out_flags & EF_ARM_EABIMASK) >> 24); | |
19771 | return FALSE; | |
19772 | } | |
19773 | ||
19774 | /* Not sure what needs to be checked for EABI versions >= 1. */ | |
19775 | /* VxWorks libraries do not use these flags. */ | |
19776 | if (get_elf_backend_data (obfd) != &elf32_arm_vxworks_bed | |
19777 | && get_elf_backend_data (ibfd) != &elf32_arm_vxworks_bed | |
19778 | && EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN) | |
19779 | { | |
19780 | if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26)) | |
19781 | { | |
19782 | _bfd_error_handler | |
19783 | (_("error: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"), | |
19784 | ibfd, obfd, | |
19785 | in_flags & EF_ARM_APCS_26 ? 26 : 32, | |
19786 | out_flags & EF_ARM_APCS_26 ? 26 : 32); | |
19787 | flags_compatible = FALSE; | |
19788 | } | |
19789 | ||
19790 | if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT)) | |
19791 | { | |
19792 | if (in_flags & EF_ARM_APCS_FLOAT) | |
19793 | _bfd_error_handler | |
19794 | (_("error: %B passes floats in float registers, whereas %B passes them in integer registers"), | |
19795 | ibfd, obfd); | |
19796 | else | |
19797 | _bfd_error_handler | |
19798 | (_("error: %B passes floats in integer registers, whereas %B passes them in float registers"), | |
19799 | ibfd, obfd); | |
19800 | ||
19801 | flags_compatible = FALSE; | |
19802 | } | |
19803 | ||
19804 | if ((in_flags & EF_ARM_VFP_FLOAT) != (out_flags & EF_ARM_VFP_FLOAT)) | |
19805 | { | |
19806 | if (in_flags & EF_ARM_VFP_FLOAT) | |
19807 | _bfd_error_handler | |
19808 | (_("error: %B uses VFP instructions, whereas %B does not"), | |
19809 | ibfd, obfd); | |
19810 | else | |
19811 | _bfd_error_handler | |
19812 | (_("error: %B uses FPA instructions, whereas %B does not"), | |
19813 | ibfd, obfd); | |
19814 | ||
19815 | flags_compatible = FALSE; | |
19816 | } | |
19817 | ||
19818 | if ((in_flags & EF_ARM_MAVERICK_FLOAT) != (out_flags & EF_ARM_MAVERICK_FLOAT)) | |
19819 | { | |
19820 | if (in_flags & EF_ARM_MAVERICK_FLOAT) | |
19821 | _bfd_error_handler | |
19822 | (_("error: %B uses Maverick instructions, whereas %B does not"), | |
19823 | ibfd, obfd); | |
19824 | else | |
19825 | _bfd_error_handler | |
19826 | (_("error: %B does not use Maverick instructions, whereas %B does"), | |
19827 | ibfd, obfd); | |
19828 | ||
19829 | flags_compatible = FALSE; | |
19830 | } | |
19831 | ||
19832 | #ifdef EF_ARM_SOFT_FLOAT | |
19833 | if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT)) | |
19834 | { | |
19835 | /* We can allow interworking between code that is VFP format | |
19836 | layout, and uses either soft float or integer regs for | |
19837 | passing floating point arguments and results. We already | |
19838 | know that the APCS_FLOAT flags match; similarly for VFP | |
19839 | flags. */ | |
19840 | if ((in_flags & EF_ARM_APCS_FLOAT) != 0 | |
19841 | || (in_flags & EF_ARM_VFP_FLOAT) == 0) | |
19842 | { | |
19843 | if (in_flags & EF_ARM_SOFT_FLOAT) | |
19844 | _bfd_error_handler | |
19845 | (_("error: %B uses software FP, whereas %B uses hardware FP"), | |
19846 | ibfd, obfd); | |
19847 | else | |
19848 | _bfd_error_handler | |
19849 | (_("error: %B uses hardware FP, whereas %B uses software FP"), | |
19850 | ibfd, obfd); | |
19851 | ||
19852 | flags_compatible = FALSE; | |
19853 | } | |
19854 | } | |
19855 | #endif | |
19856 | ||
19857 | /* Interworking mismatch is only a warning. */ | |
19858 | if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK)) | |
19859 | { | |
19860 | if (in_flags & EF_ARM_INTERWORK) | |
19861 | { | |
19862 | _bfd_error_handler | |
19863 | (_("Warning: %B supports interworking, whereas %B does not"), | |
19864 | ibfd, obfd); | |
19865 | } | |
19866 | else | |
19867 | { | |
19868 | _bfd_error_handler | |
19869 | (_("Warning: %B does not support interworking, whereas %B does"), | |
19870 | ibfd, obfd); | |
19871 | } | |
19872 | } | |
19873 | } | |
19874 | ||
19875 | return flags_compatible; | |
19876 | } | |
19877 | ||
19878 | ||
906e58ca | 19879 | /* Symbian OS Targets. */ |
7f266840 | 19880 | |
906e58ca | 19881 | #undef TARGET_LITTLE_SYM |
6d00b590 | 19882 | #define TARGET_LITTLE_SYM arm_elf32_symbian_le_vec |
906e58ca | 19883 | #undef TARGET_LITTLE_NAME |
7f266840 | 19884 | #define TARGET_LITTLE_NAME "elf32-littlearm-symbian" |
906e58ca | 19885 | #undef TARGET_BIG_SYM |
6d00b590 | 19886 | #define TARGET_BIG_SYM arm_elf32_symbian_be_vec |
906e58ca | 19887 | #undef TARGET_BIG_NAME |
7f266840 DJ |
19888 | #define TARGET_BIG_NAME "elf32-bigarm-symbian" |
19889 | ||
19890 | /* Like elf32_arm_link_hash_table_create -- but overrides | |
19891 | appropriately for Symbian OS. */ | |
906e58ca | 19892 | |
7f266840 DJ |
19893 | static struct bfd_link_hash_table * |
19894 | elf32_arm_symbian_link_hash_table_create (bfd *abfd) | |
19895 | { | |
19896 | struct bfd_link_hash_table *ret; | |
19897 | ||
19898 | ret = elf32_arm_link_hash_table_create (abfd); | |
19899 | if (ret) | |
19900 | { | |
19901 | struct elf32_arm_link_hash_table *htab | |
19902 | = (struct elf32_arm_link_hash_table *)ret; | |
19903 | /* There is no PLT header for Symbian OS. */ | |
19904 | htab->plt_header_size = 0; | |
95720a86 DJ |
19905 | /* The PLT entries are each one instruction and one word. */ |
19906 | htab->plt_entry_size = 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry); | |
7f266840 | 19907 | htab->symbian_p = 1; |
33bfe774 JB |
19908 | /* Symbian uses armv5t or above, so use_blx is always true. */ |
19909 | htab->use_blx = 1; | |
67687978 | 19910 | htab->root.is_relocatable_executable = 1; |
7f266840 DJ |
19911 | } |
19912 | return ret; | |
906e58ca | 19913 | } |
7f266840 | 19914 | |
b35d266b | 19915 | static const struct bfd_elf_special_section |
551b43fd | 19916 | elf32_arm_symbian_special_sections[] = |
7f266840 | 19917 | { |
5cd3778d MM |
19918 | /* In a BPABI executable, the dynamic linking sections do not go in |
19919 | the loadable read-only segment. The post-linker may wish to | |
19920 | refer to these sections, but they are not part of the final | |
19921 | program image. */ | |
0112cd26 NC |
19922 | { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, 0 }, |
19923 | { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, 0 }, | |
19924 | { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, 0 }, | |
19925 | { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, 0 }, | |
19926 | { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, 0 }, | |
5cd3778d MM |
19927 | /* These sections do not need to be writable as the SymbianOS |
19928 | postlinker will arrange things so that no dynamic relocation is | |
19929 | required. */ | |
0112cd26 NC |
19930 | { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC }, |
19931 | { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC }, | |
19932 | { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC }, | |
19933 | { NULL, 0, 0, 0, 0 } | |
7f266840 DJ |
19934 | }; |
19935 | ||
c3c76620 | 19936 | static void |
906e58ca | 19937 | elf32_arm_symbian_begin_write_processing (bfd *abfd, |
a4fd1a8e | 19938 | struct bfd_link_info *link_info) |
c3c76620 MM |
19939 | { |
19940 | /* BPABI objects are never loaded directly by an OS kernel; they are | |
19941 | processed by a postlinker first, into an OS-specific format. If | |
19942 | the D_PAGED bit is set on the file, BFD will align segments on | |
19943 | page boundaries, so that an OS can directly map the file. With | |
19944 | BPABI objects, that just results in wasted space. In addition, | |
19945 | because we clear the D_PAGED bit, map_sections_to_segments will | |
19946 | recognize that the program headers should not be mapped into any | |
19947 | loadable segment. */ | |
19948 | abfd->flags &= ~D_PAGED; | |
906e58ca | 19949 | elf32_arm_begin_write_processing (abfd, link_info); |
c3c76620 | 19950 | } |
7f266840 DJ |
19951 | |
19952 | static bfd_boolean | |
906e58ca | 19953 | elf32_arm_symbian_modify_segment_map (bfd *abfd, |
b294bdf8 | 19954 | struct bfd_link_info *info) |
7f266840 DJ |
19955 | { |
19956 | struct elf_segment_map *m; | |
19957 | asection *dynsec; | |
19958 | ||
7f266840 DJ |
19959 | /* BPABI shared libraries and executables should have a PT_DYNAMIC |
19960 | segment. However, because the .dynamic section is not marked | |
19961 | with SEC_LOAD, the generic ELF code will not create such a | |
19962 | segment. */ | |
19963 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); | |
19964 | if (dynsec) | |
19965 | { | |
12bd6957 | 19966 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
8ded5a0f AM |
19967 | if (m->p_type == PT_DYNAMIC) |
19968 | break; | |
19969 | ||
19970 | if (m == NULL) | |
19971 | { | |
19972 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); | |
12bd6957 AM |
19973 | m->next = elf_seg_map (abfd); |
19974 | elf_seg_map (abfd) = m; | |
8ded5a0f | 19975 | } |
7f266840 DJ |
19976 | } |
19977 | ||
b294bdf8 MM |
19978 | /* Also call the generic arm routine. */ |
19979 | return elf32_arm_modify_segment_map (abfd, info); | |
7f266840 DJ |
19980 | } |
19981 | ||
95720a86 DJ |
19982 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
19983 | or (bfd_vma) -1 if it should not be included. */ | |
19984 | ||
19985 | static bfd_vma | |
19986 | elf32_arm_symbian_plt_sym_val (bfd_vma i, const asection *plt, | |
19987 | const arelent *rel ATTRIBUTE_UNUSED) | |
19988 | { | |
19989 | return plt->vma + 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry) * i; | |
19990 | } | |
19991 | ||
8029a119 | 19992 | #undef elf32_bed |
7f266840 DJ |
19993 | #define elf32_bed elf32_arm_symbian_bed |
19994 | ||
19995 | /* The dynamic sections are not allocated on SymbianOS; the postlinker | |
19996 | will process them and then discard them. */ | |
906e58ca | 19997 | #undef ELF_DYNAMIC_SEC_FLAGS |
7f266840 DJ |
19998 | #define ELF_DYNAMIC_SEC_FLAGS \ |
19999 | (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED) | |
20000 | ||
5025eb7c AO |
20001 | #undef elf_backend_emit_relocs |
20002 | #define elf_backend_emit_relocs elf32_arm_emit_relocs | |
c3c76620 | 20003 | |
906e58ca NC |
20004 | #undef bfd_elf32_bfd_link_hash_table_create |
20005 | #define bfd_elf32_bfd_link_hash_table_create elf32_arm_symbian_link_hash_table_create | |
20006 | #undef elf_backend_special_sections | |
20007 | #define elf_backend_special_sections elf32_arm_symbian_special_sections | |
20008 | #undef elf_backend_begin_write_processing | |
20009 | #define elf_backend_begin_write_processing elf32_arm_symbian_begin_write_processing | |
20010 | #undef elf_backend_final_write_processing | |
20011 | #define elf_backend_final_write_processing elf32_arm_final_write_processing | |
20012 | ||
20013 | #undef elf_backend_modify_segment_map | |
7f266840 DJ |
20014 | #define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map |
20015 | ||
20016 | /* There is no .got section for BPABI objects, and hence no header. */ | |
906e58ca | 20017 | #undef elf_backend_got_header_size |
7f266840 DJ |
20018 | #define elf_backend_got_header_size 0 |
20019 | ||
20020 | /* Similarly, there is no .got.plt section. */ | |
906e58ca | 20021 | #undef elf_backend_want_got_plt |
7f266840 DJ |
20022 | #define elf_backend_want_got_plt 0 |
20023 | ||
906e58ca | 20024 | #undef elf_backend_plt_sym_val |
95720a86 DJ |
20025 | #define elf_backend_plt_sym_val elf32_arm_symbian_plt_sym_val |
20026 | ||
906e58ca | 20027 | #undef elf_backend_may_use_rel_p |
00a97672 | 20028 | #define elf_backend_may_use_rel_p 1 |
906e58ca | 20029 | #undef elf_backend_may_use_rela_p |
00a97672 | 20030 | #define elf_backend_may_use_rela_p 0 |
906e58ca | 20031 | #undef elf_backend_default_use_rela_p |
00a97672 | 20032 | #define elf_backend_default_use_rela_p 0 |
906e58ca | 20033 | #undef elf_backend_want_plt_sym |
00a97672 | 20034 | #define elf_backend_want_plt_sym 0 |
906e58ca | 20035 | #undef ELF_MAXPAGESIZE |
00a97672 | 20036 | #define ELF_MAXPAGESIZE 0x8000 |
4e7fd91e | 20037 | |
7f266840 | 20038 | #include "elf32-target.h" |