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252b5132 | 1 | /* 32-bit ELF support for ARM |
d1f161ea NC |
2 | Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004 |
3 | Free Software Foundation, Inc. | |
252b5132 RH |
4 | |
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
20 | ||
7f266840 DJ |
21 | #include "elf/arm.h" |
22 | #include "bfd.h" | |
23 | #include "sysdep.h" | |
24 | #include "libbfd.h" | |
25 | #include "elf-bfd.h" | |
26 | ||
27 | #ifndef NUM_ELEM | |
28 | #define NUM_ELEM(a) (sizeof (a) / (sizeof (a)[0])) | |
29 | #endif | |
30 | ||
31 | #define USE_REL 1 | |
32 | ||
33 | #define elf_info_to_howto 0 | |
34 | #define elf_info_to_howto_rel elf32_arm_info_to_howto | |
35 | ||
36 | #define ARM_ELF_ABI_VERSION 0 | |
37 | #define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM | |
38 | ||
39 | static reloc_howto_type * elf32_arm_reloc_type_lookup | |
40 | PARAMS ((bfd * abfd, bfd_reloc_code_real_type code)); | |
41 | static bfd_boolean elf32_arm_nabi_grok_prstatus | |
42 | PARAMS ((bfd *abfd, Elf_Internal_Note *note)); | |
43 | static bfd_boolean elf32_arm_nabi_grok_psinfo | |
44 | PARAMS ((bfd *abfd, Elf_Internal_Note *note)); | |
45 | ||
46 | /* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g. | |
47 | R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO | |
48 | in that slot. */ | |
49 | ||
50 | static reloc_howto_type elf32_arm_howto_table[] = | |
51 | { | |
52 | /* No relocation */ | |
53 | HOWTO (R_ARM_NONE, /* type */ | |
54 | 0, /* rightshift */ | |
55 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
56 | 0, /* bitsize */ | |
57 | FALSE, /* pc_relative */ | |
58 | 0, /* bitpos */ | |
59 | complain_overflow_dont,/* complain_on_overflow */ | |
60 | bfd_elf_generic_reloc, /* special_function */ | |
61 | "R_ARM_NONE", /* name */ | |
62 | FALSE, /* partial_inplace */ | |
63 | 0, /* src_mask */ | |
64 | 0, /* dst_mask */ | |
65 | FALSE), /* pcrel_offset */ | |
66 | ||
67 | HOWTO (R_ARM_PC24, /* type */ | |
68 | 2, /* rightshift */ | |
69 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
70 | 24, /* bitsize */ | |
71 | TRUE, /* pc_relative */ | |
72 | 0, /* bitpos */ | |
73 | complain_overflow_signed,/* complain_on_overflow */ | |
74 | bfd_elf_generic_reloc, /* special_function */ | |
75 | "R_ARM_PC24", /* name */ | |
76 | FALSE, /* partial_inplace */ | |
77 | 0x00ffffff, /* src_mask */ | |
78 | 0x00ffffff, /* dst_mask */ | |
79 | TRUE), /* pcrel_offset */ | |
80 | ||
81 | /* 32 bit absolute */ | |
82 | HOWTO (R_ARM_ABS32, /* type */ | |
83 | 0, /* rightshift */ | |
84 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
85 | 32, /* bitsize */ | |
86 | FALSE, /* pc_relative */ | |
87 | 0, /* bitpos */ | |
88 | complain_overflow_bitfield,/* complain_on_overflow */ | |
89 | bfd_elf_generic_reloc, /* special_function */ | |
90 | "R_ARM_ABS32", /* name */ | |
91 | FALSE, /* partial_inplace */ | |
92 | 0xffffffff, /* src_mask */ | |
93 | 0xffffffff, /* dst_mask */ | |
94 | FALSE), /* pcrel_offset */ | |
95 | ||
96 | /* standard 32bit pc-relative reloc */ | |
97 | HOWTO (R_ARM_REL32, /* type */ | |
98 | 0, /* rightshift */ | |
99 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
100 | 32, /* bitsize */ | |
101 | TRUE, /* pc_relative */ | |
102 | 0, /* bitpos */ | |
103 | complain_overflow_bitfield,/* complain_on_overflow */ | |
104 | bfd_elf_generic_reloc, /* special_function */ | |
105 | "R_ARM_REL32", /* name */ | |
106 | FALSE, /* partial_inplace */ | |
107 | 0xffffffff, /* src_mask */ | |
108 | 0xffffffff, /* dst_mask */ | |
109 | TRUE), /* pcrel_offset */ | |
110 | ||
111 | /* 8 bit absolute */ | |
112 | HOWTO (R_ARM_PC13, /* type */ | |
113 | 0, /* rightshift */ | |
114 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
115 | 8, /* bitsize */ | |
116 | FALSE, /* pc_relative */ | |
117 | 0, /* bitpos */ | |
118 | complain_overflow_bitfield,/* complain_on_overflow */ | |
119 | bfd_elf_generic_reloc, /* special_function */ | |
120 | "R_ARM_PC13", /* name */ | |
121 | FALSE, /* partial_inplace */ | |
122 | 0x000000ff, /* src_mask */ | |
123 | 0x000000ff, /* dst_mask */ | |
124 | FALSE), /* pcrel_offset */ | |
125 | ||
126 | /* 16 bit absolute */ | |
127 | HOWTO (R_ARM_ABS16, /* type */ | |
128 | 0, /* rightshift */ | |
129 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
130 | 16, /* bitsize */ | |
131 | FALSE, /* pc_relative */ | |
132 | 0, /* bitpos */ | |
133 | complain_overflow_bitfield,/* complain_on_overflow */ | |
134 | bfd_elf_generic_reloc, /* special_function */ | |
135 | "R_ARM_ABS16", /* name */ | |
136 | FALSE, /* partial_inplace */ | |
137 | 0x0000ffff, /* src_mask */ | |
138 | 0x0000ffff, /* dst_mask */ | |
139 | FALSE), /* pcrel_offset */ | |
140 | ||
141 | /* 12 bit absolute */ | |
142 | HOWTO (R_ARM_ABS12, /* type */ | |
143 | 0, /* rightshift */ | |
144 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
145 | 12, /* bitsize */ | |
146 | FALSE, /* pc_relative */ | |
147 | 0, /* bitpos */ | |
148 | complain_overflow_bitfield,/* complain_on_overflow */ | |
149 | bfd_elf_generic_reloc, /* special_function */ | |
150 | "R_ARM_ABS12", /* name */ | |
151 | FALSE, /* partial_inplace */ | |
152 | 0x000008ff, /* src_mask */ | |
153 | 0x000008ff, /* dst_mask */ | |
154 | FALSE), /* pcrel_offset */ | |
155 | ||
156 | HOWTO (R_ARM_THM_ABS5, /* type */ | |
157 | 6, /* rightshift */ | |
158 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
159 | 5, /* bitsize */ | |
160 | FALSE, /* pc_relative */ | |
161 | 0, /* bitpos */ | |
162 | complain_overflow_bitfield,/* complain_on_overflow */ | |
163 | bfd_elf_generic_reloc, /* special_function */ | |
164 | "R_ARM_THM_ABS5", /* name */ | |
165 | FALSE, /* partial_inplace */ | |
166 | 0x000007e0, /* src_mask */ | |
167 | 0x000007e0, /* dst_mask */ | |
168 | FALSE), /* pcrel_offset */ | |
169 | ||
170 | /* 8 bit absolute */ | |
171 | HOWTO (R_ARM_ABS8, /* type */ | |
172 | 0, /* rightshift */ | |
173 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
174 | 8, /* bitsize */ | |
175 | FALSE, /* pc_relative */ | |
176 | 0, /* bitpos */ | |
177 | complain_overflow_bitfield,/* complain_on_overflow */ | |
178 | bfd_elf_generic_reloc, /* special_function */ | |
179 | "R_ARM_ABS8", /* name */ | |
180 | FALSE, /* partial_inplace */ | |
181 | 0x000000ff, /* src_mask */ | |
182 | 0x000000ff, /* dst_mask */ | |
183 | FALSE), /* pcrel_offset */ | |
184 | ||
185 | HOWTO (R_ARM_SBREL32, /* type */ | |
186 | 0, /* rightshift */ | |
187 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
188 | 32, /* bitsize */ | |
189 | FALSE, /* pc_relative */ | |
190 | 0, /* bitpos */ | |
191 | complain_overflow_dont,/* complain_on_overflow */ | |
192 | bfd_elf_generic_reloc, /* special_function */ | |
193 | "R_ARM_SBREL32", /* name */ | |
194 | FALSE, /* partial_inplace */ | |
195 | 0xffffffff, /* src_mask */ | |
196 | 0xffffffff, /* dst_mask */ | |
197 | FALSE), /* pcrel_offset */ | |
198 | ||
199 | HOWTO (R_ARM_THM_PC22, /* type */ | |
200 | 1, /* rightshift */ | |
201 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
202 | 23, /* bitsize */ | |
203 | TRUE, /* pc_relative */ | |
204 | 0, /* bitpos */ | |
205 | complain_overflow_signed,/* complain_on_overflow */ | |
206 | bfd_elf_generic_reloc, /* special_function */ | |
207 | "R_ARM_THM_PC22", /* name */ | |
208 | FALSE, /* partial_inplace */ | |
209 | 0x07ff07ff, /* src_mask */ | |
210 | 0x07ff07ff, /* dst_mask */ | |
211 | TRUE), /* pcrel_offset */ | |
212 | ||
213 | HOWTO (R_ARM_THM_PC8, /* type */ | |
214 | 1, /* rightshift */ | |
215 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
216 | 8, /* bitsize */ | |
217 | TRUE, /* pc_relative */ | |
218 | 0, /* bitpos */ | |
219 | complain_overflow_signed,/* complain_on_overflow */ | |
220 | bfd_elf_generic_reloc, /* special_function */ | |
221 | "R_ARM_THM_PC8", /* name */ | |
222 | FALSE, /* partial_inplace */ | |
223 | 0x000000ff, /* src_mask */ | |
224 | 0x000000ff, /* dst_mask */ | |
225 | TRUE), /* pcrel_offset */ | |
226 | ||
227 | HOWTO (R_ARM_AMP_VCALL9, /* type */ | |
228 | 1, /* rightshift */ | |
229 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
230 | 8, /* bitsize */ | |
231 | TRUE, /* pc_relative */ | |
232 | 0, /* bitpos */ | |
233 | complain_overflow_signed,/* complain_on_overflow */ | |
234 | bfd_elf_generic_reloc, /* special_function */ | |
235 | "R_ARM_AMP_VCALL9", /* name */ | |
236 | FALSE, /* partial_inplace */ | |
237 | 0x000000ff, /* src_mask */ | |
238 | 0x000000ff, /* dst_mask */ | |
239 | TRUE), /* pcrel_offset */ | |
240 | ||
241 | HOWTO (R_ARM_SWI24, /* type */ | |
242 | 0, /* rightshift */ | |
243 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
244 | 0, /* bitsize */ | |
245 | FALSE, /* pc_relative */ | |
246 | 0, /* bitpos */ | |
247 | complain_overflow_signed,/* complain_on_overflow */ | |
248 | bfd_elf_generic_reloc, /* special_function */ | |
249 | "R_ARM_SWI24", /* name */ | |
250 | FALSE, /* partial_inplace */ | |
251 | 0x00000000, /* src_mask */ | |
252 | 0x00000000, /* dst_mask */ | |
253 | FALSE), /* pcrel_offset */ | |
254 | ||
255 | HOWTO (R_ARM_THM_SWI8, /* type */ | |
256 | 0, /* rightshift */ | |
257 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
258 | 0, /* bitsize */ | |
259 | FALSE, /* pc_relative */ | |
260 | 0, /* bitpos */ | |
261 | complain_overflow_signed,/* complain_on_overflow */ | |
262 | bfd_elf_generic_reloc, /* special_function */ | |
263 | "R_ARM_SWI8", /* name */ | |
264 | FALSE, /* partial_inplace */ | |
265 | 0x00000000, /* src_mask */ | |
266 | 0x00000000, /* dst_mask */ | |
267 | FALSE), /* pcrel_offset */ | |
268 | ||
269 | /* BLX instruction for the ARM. */ | |
270 | HOWTO (R_ARM_XPC25, /* type */ | |
271 | 2, /* rightshift */ | |
272 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
273 | 25, /* bitsize */ | |
274 | TRUE, /* pc_relative */ | |
275 | 0, /* bitpos */ | |
276 | complain_overflow_signed,/* complain_on_overflow */ | |
277 | bfd_elf_generic_reloc, /* special_function */ | |
278 | "R_ARM_XPC25", /* name */ | |
279 | FALSE, /* partial_inplace */ | |
280 | 0x00ffffff, /* src_mask */ | |
281 | 0x00ffffff, /* dst_mask */ | |
282 | TRUE), /* pcrel_offset */ | |
283 | ||
284 | /* BLX instruction for the Thumb. */ | |
285 | HOWTO (R_ARM_THM_XPC22, /* type */ | |
286 | 2, /* rightshift */ | |
287 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
288 | 22, /* bitsize */ | |
289 | TRUE, /* pc_relative */ | |
290 | 0, /* bitpos */ | |
291 | complain_overflow_signed,/* complain_on_overflow */ | |
292 | bfd_elf_generic_reloc, /* special_function */ | |
293 | "R_ARM_THM_XPC22", /* name */ | |
294 | FALSE, /* partial_inplace */ | |
295 | 0x07ff07ff, /* src_mask */ | |
296 | 0x07ff07ff, /* dst_mask */ | |
297 | TRUE), /* pcrel_offset */ | |
298 | ||
299 | /* These next three relocs are not defined, but we need to fill the space. */ | |
300 | ||
301 | HOWTO (R_ARM_NONE, /* type */ | |
302 | 0, /* rightshift */ | |
303 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
304 | 0, /* bitsize */ | |
305 | FALSE, /* pc_relative */ | |
306 | 0, /* bitpos */ | |
307 | complain_overflow_dont,/* complain_on_overflow */ | |
308 | bfd_elf_generic_reloc, /* special_function */ | |
309 | "R_ARM_unknown_17", /* name */ | |
310 | FALSE, /* partial_inplace */ | |
311 | 0, /* src_mask */ | |
312 | 0, /* dst_mask */ | |
313 | FALSE), /* pcrel_offset */ | |
314 | ||
315 | HOWTO (R_ARM_NONE, /* type */ | |
316 | 0, /* rightshift */ | |
317 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
318 | 0, /* bitsize */ | |
319 | FALSE, /* pc_relative */ | |
320 | 0, /* bitpos */ | |
321 | complain_overflow_dont,/* complain_on_overflow */ | |
322 | bfd_elf_generic_reloc, /* special_function */ | |
323 | "R_ARM_unknown_18", /* name */ | |
324 | FALSE, /* partial_inplace */ | |
325 | 0, /* src_mask */ | |
326 | 0, /* dst_mask */ | |
327 | FALSE), /* pcrel_offset */ | |
328 | ||
329 | HOWTO (R_ARM_NONE, /* type */ | |
330 | 0, /* rightshift */ | |
331 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
332 | 0, /* bitsize */ | |
333 | FALSE, /* pc_relative */ | |
334 | 0, /* bitpos */ | |
335 | complain_overflow_dont,/* complain_on_overflow */ | |
336 | bfd_elf_generic_reloc, /* special_function */ | |
337 | "R_ARM_unknown_19", /* name */ | |
338 | FALSE, /* partial_inplace */ | |
339 | 0, /* src_mask */ | |
340 | 0, /* dst_mask */ | |
341 | FALSE), /* pcrel_offset */ | |
342 | ||
343 | /* Relocs used in ARM Linux */ | |
344 | ||
345 | HOWTO (R_ARM_COPY, /* type */ | |
346 | 0, /* rightshift */ | |
347 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
348 | 32, /* bitsize */ | |
349 | FALSE, /* pc_relative */ | |
350 | 0, /* bitpos */ | |
351 | complain_overflow_bitfield,/* complain_on_overflow */ | |
352 | bfd_elf_generic_reloc, /* special_function */ | |
353 | "R_ARM_COPY", /* name */ | |
354 | TRUE, /* partial_inplace */ | |
355 | 0xffffffff, /* src_mask */ | |
356 | 0xffffffff, /* dst_mask */ | |
357 | FALSE), /* pcrel_offset */ | |
358 | ||
359 | HOWTO (R_ARM_GLOB_DAT, /* type */ | |
360 | 0, /* rightshift */ | |
361 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
362 | 32, /* bitsize */ | |
363 | FALSE, /* pc_relative */ | |
364 | 0, /* bitpos */ | |
365 | complain_overflow_bitfield,/* complain_on_overflow */ | |
366 | bfd_elf_generic_reloc, /* special_function */ | |
367 | "R_ARM_GLOB_DAT", /* name */ | |
368 | TRUE, /* partial_inplace */ | |
369 | 0xffffffff, /* src_mask */ | |
370 | 0xffffffff, /* dst_mask */ | |
371 | FALSE), /* pcrel_offset */ | |
372 | ||
373 | HOWTO (R_ARM_JUMP_SLOT, /* type */ | |
374 | 0, /* rightshift */ | |
375 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
376 | 32, /* bitsize */ | |
377 | FALSE, /* pc_relative */ | |
378 | 0, /* bitpos */ | |
379 | complain_overflow_bitfield,/* complain_on_overflow */ | |
380 | bfd_elf_generic_reloc, /* special_function */ | |
381 | "R_ARM_JUMP_SLOT", /* name */ | |
382 | TRUE, /* partial_inplace */ | |
383 | 0xffffffff, /* src_mask */ | |
384 | 0xffffffff, /* dst_mask */ | |
385 | FALSE), /* pcrel_offset */ | |
386 | ||
387 | HOWTO (R_ARM_RELATIVE, /* type */ | |
388 | 0, /* rightshift */ | |
389 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
390 | 32, /* bitsize */ | |
391 | FALSE, /* pc_relative */ | |
392 | 0, /* bitpos */ | |
393 | complain_overflow_bitfield,/* complain_on_overflow */ | |
394 | bfd_elf_generic_reloc, /* special_function */ | |
395 | "R_ARM_RELATIVE", /* name */ | |
396 | TRUE, /* partial_inplace */ | |
397 | 0xffffffff, /* src_mask */ | |
398 | 0xffffffff, /* dst_mask */ | |
399 | FALSE), /* pcrel_offset */ | |
400 | ||
401 | HOWTO (R_ARM_GOTOFF, /* type */ | |
402 | 0, /* rightshift */ | |
403 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
404 | 32, /* bitsize */ | |
405 | FALSE, /* pc_relative */ | |
406 | 0, /* bitpos */ | |
407 | complain_overflow_bitfield,/* complain_on_overflow */ | |
408 | bfd_elf_generic_reloc, /* special_function */ | |
409 | "R_ARM_GOTOFF", /* name */ | |
410 | TRUE, /* partial_inplace */ | |
411 | 0xffffffff, /* src_mask */ | |
412 | 0xffffffff, /* dst_mask */ | |
413 | FALSE), /* pcrel_offset */ | |
414 | ||
415 | HOWTO (R_ARM_GOTPC, /* type */ | |
416 | 0, /* rightshift */ | |
417 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
418 | 32, /* bitsize */ | |
419 | TRUE, /* pc_relative */ | |
420 | 0, /* bitpos */ | |
421 | complain_overflow_bitfield,/* complain_on_overflow */ | |
422 | bfd_elf_generic_reloc, /* special_function */ | |
423 | "R_ARM_GOTPC", /* name */ | |
424 | TRUE, /* partial_inplace */ | |
425 | 0xffffffff, /* src_mask */ | |
426 | 0xffffffff, /* dst_mask */ | |
427 | TRUE), /* pcrel_offset */ | |
428 | ||
429 | HOWTO (R_ARM_GOT32, /* type */ | |
430 | 0, /* rightshift */ | |
431 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
432 | 32, /* bitsize */ | |
433 | FALSE, /* pc_relative */ | |
434 | 0, /* bitpos */ | |
435 | complain_overflow_bitfield,/* complain_on_overflow */ | |
436 | bfd_elf_generic_reloc, /* special_function */ | |
437 | "R_ARM_GOT32", /* name */ | |
438 | TRUE, /* partial_inplace */ | |
439 | 0xffffffff, /* src_mask */ | |
440 | 0xffffffff, /* dst_mask */ | |
441 | FALSE), /* pcrel_offset */ | |
442 | ||
443 | HOWTO (R_ARM_PLT32, /* type */ | |
444 | 2, /* rightshift */ | |
445 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
446 | 26, /* bitsize */ | |
447 | TRUE, /* pc_relative */ | |
448 | 0, /* bitpos */ | |
449 | complain_overflow_bitfield,/* complain_on_overflow */ | |
450 | bfd_elf_generic_reloc, /* special_function */ | |
451 | "R_ARM_PLT32", /* name */ | |
452 | TRUE, /* partial_inplace */ | |
453 | 0x00ffffff, /* src_mask */ | |
454 | 0x00ffffff, /* dst_mask */ | |
455 | TRUE), /* pcrel_offset */ | |
456 | ||
457 | HOWTO (R_ARM_CALL, /* type */ | |
458 | 2, /* rightshift */ | |
459 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
460 | 24, /* bitsize */ | |
461 | TRUE, /* pc_relative */ | |
462 | 0, /* bitpos */ | |
463 | complain_overflow_signed,/* complain_on_overflow */ | |
464 | bfd_elf_generic_reloc, /* special_function */ | |
465 | "R_ARM_CALL", /* name */ | |
466 | FALSE, /* partial_inplace */ | |
467 | 0x00ffffff, /* src_mask */ | |
468 | 0x00ffffff, /* dst_mask */ | |
469 | TRUE), /* pcrel_offset */ | |
470 | ||
471 | HOWTO (R_ARM_JUMP24, /* type */ | |
472 | 2, /* rightshift */ | |
473 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
474 | 24, /* bitsize */ | |
475 | TRUE, /* pc_relative */ | |
476 | 0, /* bitpos */ | |
477 | complain_overflow_signed,/* complain_on_overflow */ | |
478 | bfd_elf_generic_reloc, /* special_function */ | |
479 | "R_ARM_JUMP24", /* name */ | |
480 | FALSE, /* partial_inplace */ | |
481 | 0x00ffffff, /* src_mask */ | |
482 | 0x00ffffff, /* dst_mask */ | |
483 | TRUE), /* pcrel_offset */ | |
484 | ||
485 | HOWTO (R_ARM_NONE, /* type */ | |
486 | 0, /* rightshift */ | |
487 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
488 | 0, /* bitsize */ | |
489 | FALSE, /* pc_relative */ | |
490 | 0, /* bitpos */ | |
491 | complain_overflow_dont,/* complain_on_overflow */ | |
492 | bfd_elf_generic_reloc, /* special_function */ | |
493 | "R_ARM_unknown_30", /* name */ | |
494 | FALSE, /* partial_inplace */ | |
495 | 0, /* src_mask */ | |
496 | 0, /* dst_mask */ | |
497 | FALSE), /* pcrel_offset */ | |
498 | ||
499 | HOWTO (R_ARM_NONE, /* type */ | |
500 | 0, /* rightshift */ | |
501 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
502 | 0, /* bitsize */ | |
503 | FALSE, /* pc_relative */ | |
504 | 0, /* bitpos */ | |
505 | complain_overflow_dont,/* complain_on_overflow */ | |
506 | bfd_elf_generic_reloc, /* special_function */ | |
507 | "R_ARM_unknown_31", /* name */ | |
508 | FALSE, /* partial_inplace */ | |
509 | 0, /* src_mask */ | |
510 | 0, /* dst_mask */ | |
511 | FALSE), /* pcrel_offset */ | |
512 | ||
513 | HOWTO (R_ARM_ALU_PCREL7_0, /* type */ | |
514 | 0, /* rightshift */ | |
515 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
516 | 12, /* bitsize */ | |
517 | TRUE, /* pc_relative */ | |
518 | 0, /* bitpos */ | |
519 | complain_overflow_dont,/* complain_on_overflow */ | |
520 | bfd_elf_generic_reloc, /* special_function */ | |
521 | "R_ARM_ALU_PCREL_7_0", /* name */ | |
522 | FALSE, /* partial_inplace */ | |
523 | 0x00000fff, /* src_mask */ | |
524 | 0x00000fff, /* dst_mask */ | |
525 | TRUE), /* pcrel_offset */ | |
526 | ||
527 | HOWTO (R_ARM_ALU_PCREL15_8, /* type */ | |
528 | 0, /* rightshift */ | |
529 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
530 | 12, /* bitsize */ | |
531 | TRUE, /* pc_relative */ | |
532 | 8, /* bitpos */ | |
533 | complain_overflow_dont,/* complain_on_overflow */ | |
534 | bfd_elf_generic_reloc, /* special_function */ | |
535 | "R_ARM_ALU_PCREL_15_8",/* name */ | |
536 | FALSE, /* partial_inplace */ | |
537 | 0x00000fff, /* src_mask */ | |
538 | 0x00000fff, /* dst_mask */ | |
539 | TRUE), /* pcrel_offset */ | |
540 | ||
541 | HOWTO (R_ARM_ALU_PCREL23_15, /* type */ | |
542 | 0, /* rightshift */ | |
543 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
544 | 12, /* bitsize */ | |
545 | TRUE, /* pc_relative */ | |
546 | 16, /* bitpos */ | |
547 | complain_overflow_dont,/* complain_on_overflow */ | |
548 | bfd_elf_generic_reloc, /* special_function */ | |
549 | "R_ARM_ALU_PCREL_23_15",/* name */ | |
550 | FALSE, /* partial_inplace */ | |
551 | 0x00000fff, /* src_mask */ | |
552 | 0x00000fff, /* dst_mask */ | |
553 | TRUE), /* pcrel_offset */ | |
554 | ||
555 | HOWTO (R_ARM_LDR_SBREL_11_0, /* type */ | |
556 | 0, /* rightshift */ | |
557 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
558 | 12, /* bitsize */ | |
559 | FALSE, /* pc_relative */ | |
560 | 0, /* bitpos */ | |
561 | complain_overflow_dont,/* complain_on_overflow */ | |
562 | bfd_elf_generic_reloc, /* special_function */ | |
563 | "R_ARM_LDR_SBREL_11_0",/* name */ | |
564 | FALSE, /* partial_inplace */ | |
565 | 0x00000fff, /* src_mask */ | |
566 | 0x00000fff, /* dst_mask */ | |
567 | FALSE), /* pcrel_offset */ | |
568 | ||
569 | HOWTO (R_ARM_ALU_SBREL_19_12, /* type */ | |
570 | 0, /* rightshift */ | |
571 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
572 | 8, /* bitsize */ | |
573 | FALSE, /* pc_relative */ | |
574 | 12, /* bitpos */ | |
575 | complain_overflow_dont,/* complain_on_overflow */ | |
576 | bfd_elf_generic_reloc, /* special_function */ | |
577 | "R_ARM_ALU_SBREL_19_12",/* name */ | |
578 | FALSE, /* partial_inplace */ | |
579 | 0x000ff000, /* src_mask */ | |
580 | 0x000ff000, /* dst_mask */ | |
581 | FALSE), /* pcrel_offset */ | |
582 | ||
583 | HOWTO (R_ARM_ALU_SBREL_27_20, /* type */ | |
584 | 0, /* rightshift */ | |
585 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
586 | 8, /* bitsize */ | |
587 | FALSE, /* pc_relative */ | |
588 | 20, /* bitpos */ | |
589 | complain_overflow_dont,/* complain_on_overflow */ | |
590 | bfd_elf_generic_reloc, /* special_function */ | |
591 | "R_ARM_ALU_SBREL_27_20",/* name */ | |
592 | FALSE, /* partial_inplace */ | |
593 | 0x0ff00000, /* src_mask */ | |
594 | 0x0ff00000, /* dst_mask */ | |
595 | FALSE), /* pcrel_offset */ | |
596 | ||
597 | HOWTO (R_ARM_TARGET1, /* type */ | |
598 | 0, /* rightshift */ | |
599 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
600 | 32, /* bitsize */ | |
601 | FALSE, /* pc_relative */ | |
602 | 0, /* bitpos */ | |
603 | complain_overflow_dont,/* complain_on_overflow */ | |
604 | bfd_elf_generic_reloc, /* special_function */ | |
605 | "R_ARM_TARGET1", /* name */ | |
606 | FALSE, /* partial_inplace */ | |
607 | 0xffffffff, /* src_mask */ | |
608 | 0xffffffff, /* dst_mask */ | |
609 | FALSE), /* pcrel_offset */ | |
610 | ||
611 | HOWTO (R_ARM_ROSEGREL32, /* type */ | |
612 | 0, /* rightshift */ | |
613 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
614 | 32, /* bitsize */ | |
615 | FALSE, /* pc_relative */ | |
616 | 0, /* bitpos */ | |
617 | complain_overflow_dont,/* complain_on_overflow */ | |
618 | bfd_elf_generic_reloc, /* special_function */ | |
619 | "R_ARM_ROSEGREL32", /* name */ | |
620 | FALSE, /* partial_inplace */ | |
621 | 0xffffffff, /* src_mask */ | |
622 | 0xffffffff, /* dst_mask */ | |
623 | FALSE), /* pcrel_offset */ | |
624 | ||
625 | HOWTO (R_ARM_V4BX, /* type */ | |
626 | 0, /* rightshift */ | |
627 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
628 | 32, /* bitsize */ | |
629 | FALSE, /* pc_relative */ | |
630 | 0, /* bitpos */ | |
631 | complain_overflow_dont,/* complain_on_overflow */ | |
632 | bfd_elf_generic_reloc, /* special_function */ | |
633 | "R_ARM_V4BX", /* name */ | |
634 | FALSE, /* partial_inplace */ | |
635 | 0xffffffff, /* src_mask */ | |
636 | 0xffffffff, /* dst_mask */ | |
637 | FALSE), /* pcrel_offset */ | |
638 | ||
639 | HOWTO (R_ARM_TARGET2, /* type */ | |
640 | 0, /* rightshift */ | |
641 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
642 | 32, /* bitsize */ | |
643 | FALSE, /* pc_relative */ | |
644 | 0, /* bitpos */ | |
645 | complain_overflow_signed,/* complain_on_overflow */ | |
646 | bfd_elf_generic_reloc, /* special_function */ | |
647 | "R_ARM_TARGET2", /* name */ | |
648 | FALSE, /* partial_inplace */ | |
649 | 0xffffffff, /* src_mask */ | |
650 | 0xffffffff, /* dst_mask */ | |
651 | TRUE), /* pcrel_offset */ | |
652 | ||
653 | HOWTO (R_ARM_PREL31, /* type */ | |
654 | 0, /* rightshift */ | |
655 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
656 | 31, /* bitsize */ | |
657 | TRUE, /* pc_relative */ | |
658 | 0, /* bitpos */ | |
659 | complain_overflow_signed,/* complain_on_overflow */ | |
660 | bfd_elf_generic_reloc, /* special_function */ | |
661 | "R_ARM_PREL31", /* name */ | |
662 | FALSE, /* partial_inplace */ | |
663 | 0x7fffffff, /* src_mask */ | |
664 | 0x7fffffff, /* dst_mask */ | |
665 | TRUE), /* pcrel_offset */ | |
666 | }; | |
667 | ||
668 | /* GNU extension to record C++ vtable hierarchy */ | |
669 | static reloc_howto_type elf32_arm_vtinherit_howto = | |
670 | HOWTO (R_ARM_GNU_VTINHERIT, /* type */ | |
671 | 0, /* rightshift */ | |
672 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
673 | 0, /* bitsize */ | |
674 | FALSE, /* pc_relative */ | |
675 | 0, /* bitpos */ | |
676 | complain_overflow_dont, /* complain_on_overflow */ | |
677 | NULL, /* special_function */ | |
678 | "R_ARM_GNU_VTINHERIT", /* name */ | |
679 | FALSE, /* partial_inplace */ | |
680 | 0, /* src_mask */ | |
681 | 0, /* dst_mask */ | |
682 | FALSE); /* pcrel_offset */ | |
683 | ||
684 | /* GNU extension to record C++ vtable member usage */ | |
685 | static reloc_howto_type elf32_arm_vtentry_howto = | |
686 | HOWTO (R_ARM_GNU_VTENTRY, /* type */ | |
687 | 0, /* rightshift */ | |
688 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
689 | 0, /* bitsize */ | |
690 | FALSE, /* pc_relative */ | |
691 | 0, /* bitpos */ | |
692 | complain_overflow_dont, /* complain_on_overflow */ | |
693 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
694 | "R_ARM_GNU_VTENTRY", /* name */ | |
695 | FALSE, /* partial_inplace */ | |
696 | 0, /* src_mask */ | |
697 | 0, /* dst_mask */ | |
698 | FALSE); /* pcrel_offset */ | |
699 | ||
700 | /* 12 bit pc relative */ | |
701 | static reloc_howto_type elf32_arm_thm_pc11_howto = | |
702 | HOWTO (R_ARM_THM_PC11, /* type */ | |
703 | 1, /* rightshift */ | |
704 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
705 | 11, /* bitsize */ | |
706 | TRUE, /* pc_relative */ | |
707 | 0, /* bitpos */ | |
708 | complain_overflow_signed, /* complain_on_overflow */ | |
709 | bfd_elf_generic_reloc, /* special_function */ | |
710 | "R_ARM_THM_PC11", /* name */ | |
711 | FALSE, /* partial_inplace */ | |
712 | 0x000007ff, /* src_mask */ | |
713 | 0x000007ff, /* dst_mask */ | |
714 | TRUE); /* pcrel_offset */ | |
715 | ||
716 | /* 12 bit pc relative */ | |
717 | static reloc_howto_type elf32_arm_thm_pc9_howto = | |
718 | HOWTO (R_ARM_THM_PC9, /* type */ | |
719 | 1, /* rightshift */ | |
720 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
721 | 8, /* bitsize */ | |
722 | TRUE, /* pc_relative */ | |
723 | 0, /* bitpos */ | |
724 | complain_overflow_signed, /* complain_on_overflow */ | |
725 | bfd_elf_generic_reloc, /* special_function */ | |
726 | "R_ARM_THM_PC9", /* name */ | |
727 | FALSE, /* partial_inplace */ | |
728 | 0x000000ff, /* src_mask */ | |
729 | 0x000000ff, /* dst_mask */ | |
730 | TRUE); /* pcrel_offset */ | |
731 | ||
732 | /* Place relative GOT-indirect. */ | |
733 | static reloc_howto_type elf32_arm_got_prel = | |
734 | HOWTO (R_ARM_GOT_PREL, /* type */ | |
735 | 0, /* rightshift */ | |
736 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
737 | 32, /* bitsize */ | |
738 | TRUE, /* pc_relative */ | |
739 | 0, /* bitpos */ | |
740 | complain_overflow_dont, /* complain_on_overflow */ | |
741 | bfd_elf_generic_reloc, /* special_function */ | |
742 | "R_ARM_GOT_PREL", /* name */ | |
743 | FALSE, /* partial_inplace */ | |
744 | 0xffffffff, /* src_mask */ | |
745 | 0xffffffff, /* dst_mask */ | |
746 | TRUE); /* pcrel_offset */ | |
747 | ||
748 | /* Currently unused relocations. */ | |
749 | static reloc_howto_type elf32_arm_r_howto[4] = | |
750 | { | |
751 | HOWTO (R_ARM_RREL32, /* type */ | |
752 | 0, /* rightshift */ | |
753 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
754 | 0, /* bitsize */ | |
755 | FALSE, /* pc_relative */ | |
756 | 0, /* bitpos */ | |
757 | complain_overflow_dont,/* complain_on_overflow */ | |
758 | bfd_elf_generic_reloc, /* special_function */ | |
759 | "R_ARM_RREL32", /* name */ | |
760 | FALSE, /* partial_inplace */ | |
761 | 0, /* src_mask */ | |
762 | 0, /* dst_mask */ | |
763 | FALSE), /* pcrel_offset */ | |
764 | ||
765 | HOWTO (R_ARM_RABS32, /* type */ | |
766 | 0, /* rightshift */ | |
767 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
768 | 0, /* bitsize */ | |
769 | FALSE, /* pc_relative */ | |
770 | 0, /* bitpos */ | |
771 | complain_overflow_dont,/* complain_on_overflow */ | |
772 | bfd_elf_generic_reloc, /* special_function */ | |
773 | "R_ARM_RABS32", /* name */ | |
774 | FALSE, /* partial_inplace */ | |
775 | 0, /* src_mask */ | |
776 | 0, /* dst_mask */ | |
777 | FALSE), /* pcrel_offset */ | |
778 | ||
779 | HOWTO (R_ARM_RPC24, /* type */ | |
780 | 0, /* rightshift */ | |
781 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
782 | 0, /* bitsize */ | |
783 | FALSE, /* pc_relative */ | |
784 | 0, /* bitpos */ | |
785 | complain_overflow_dont,/* complain_on_overflow */ | |
786 | bfd_elf_generic_reloc, /* special_function */ | |
787 | "R_ARM_RPC24", /* name */ | |
788 | FALSE, /* partial_inplace */ | |
789 | 0, /* src_mask */ | |
790 | 0, /* dst_mask */ | |
791 | FALSE), /* pcrel_offset */ | |
792 | ||
793 | HOWTO (R_ARM_RBASE, /* type */ | |
794 | 0, /* rightshift */ | |
795 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
796 | 0, /* bitsize */ | |
797 | FALSE, /* pc_relative */ | |
798 | 0, /* bitpos */ | |
799 | complain_overflow_dont,/* complain_on_overflow */ | |
800 | bfd_elf_generic_reloc, /* special_function */ | |
801 | "R_ARM_RBASE", /* name */ | |
802 | FALSE, /* partial_inplace */ | |
803 | 0, /* src_mask */ | |
804 | 0, /* dst_mask */ | |
805 | FALSE) /* pcrel_offset */ | |
806 | }; | |
807 | ||
808 | static reloc_howto_type * | |
809 | elf32_arm_howto_from_type (unsigned int r_type) | |
810 | { | |
811 | if (r_type < NUM_ELEM (elf32_arm_howto_table)) | |
812 | return &elf32_arm_howto_table[r_type]; | |
813 | ||
814 | switch (r_type) | |
815 | { | |
816 | case R_ARM_GOT_PREL: | |
817 | return &elf32_arm_got_prel; | |
818 | ||
819 | case R_ARM_GNU_VTINHERIT: | |
820 | return &elf32_arm_vtinherit_howto; | |
821 | ||
822 | case R_ARM_GNU_VTENTRY: | |
823 | return &elf32_arm_vtentry_howto; | |
824 | ||
825 | case R_ARM_THM_PC11: | |
826 | return &elf32_arm_thm_pc11_howto; | |
827 | ||
828 | case R_ARM_THM_PC9: | |
829 | return &elf32_arm_thm_pc9_howto; | |
830 | ||
831 | case R_ARM_RREL32: | |
832 | case R_ARM_RABS32: | |
833 | case R_ARM_RPC24: | |
834 | case R_ARM_RBASE: | |
835 | return &elf32_arm_r_howto[r_type - R_ARM_RREL32]; | |
836 | ||
837 | default: | |
838 | return NULL; | |
839 | } | |
840 | } | |
841 | ||
842 | static void | |
843 | elf32_arm_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED, arelent * bfd_reloc, | |
844 | Elf_Internal_Rela * elf_reloc) | |
845 | { | |
846 | unsigned int r_type; | |
847 | ||
848 | r_type = ELF32_R_TYPE (elf_reloc->r_info); | |
849 | bfd_reloc->howto = elf32_arm_howto_from_type (r_type); | |
850 | } | |
851 | ||
852 | struct elf32_arm_reloc_map | |
853 | { | |
854 | bfd_reloc_code_real_type bfd_reloc_val; | |
855 | unsigned char elf_reloc_val; | |
856 | }; | |
857 | ||
858 | /* All entries in this list must also be present in elf32_arm_howto_table. */ | |
859 | static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] = | |
860 | { | |
861 | {BFD_RELOC_NONE, R_ARM_NONE}, | |
862 | {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24}, | |
863 | {BFD_RELOC_ARM_PCREL_BLX, R_ARM_XPC25}, | |
864 | {BFD_RELOC_THUMB_PCREL_BLX, R_ARM_THM_XPC22}, | |
865 | {BFD_RELOC_32, R_ARM_ABS32}, | |
866 | {BFD_RELOC_32_PCREL, R_ARM_REL32}, | |
867 | {BFD_RELOC_8, R_ARM_ABS8}, | |
868 | {BFD_RELOC_16, R_ARM_ABS16}, | |
869 | {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12}, | |
870 | {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5}, | |
871 | {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_PC22}, | |
872 | {BFD_RELOC_ARM_COPY, R_ARM_COPY}, | |
873 | {BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT}, | |
874 | {BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT}, | |
875 | {BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE}, | |
876 | {BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF}, | |
877 | {BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC}, | |
878 | {BFD_RELOC_ARM_GOT32, R_ARM_GOT32}, | |
879 | {BFD_RELOC_ARM_PLT32, R_ARM_PLT32}, | |
880 | {BFD_RELOC_ARM_TARGET1, R_ARM_TARGET1}, | |
881 | {BFD_RELOC_ARM_ROSEGREL32, R_ARM_ROSEGREL32}, | |
882 | {BFD_RELOC_ARM_SBREL32, R_ARM_SBREL32}, | |
883 | {BFD_RELOC_ARM_PREL31, R_ARM_PREL31}, | |
884 | {BFD_RELOC_ARM_TARGET2, R_ARM_TARGET2} | |
885 | }; | |
886 | ||
887 | static reloc_howto_type * | |
888 | elf32_arm_reloc_type_lookup (abfd, code) | |
889 | bfd *abfd ATTRIBUTE_UNUSED; | |
890 | bfd_reloc_code_real_type code; | |
891 | { | |
892 | unsigned int i; | |
893 | ||
894 | switch (code) | |
895 | { | |
896 | case BFD_RELOC_VTABLE_INHERIT: | |
897 | return & elf32_arm_vtinherit_howto; | |
898 | ||
899 | case BFD_RELOC_VTABLE_ENTRY: | |
900 | return & elf32_arm_vtentry_howto; | |
901 | ||
902 | case BFD_RELOC_THUMB_PCREL_BRANCH12: | |
903 | return & elf32_arm_thm_pc11_howto; | |
904 | ||
905 | case BFD_RELOC_THUMB_PCREL_BRANCH9: | |
906 | return & elf32_arm_thm_pc9_howto; | |
907 | ||
908 | default: | |
909 | for (i = 0; i < NUM_ELEM (elf32_arm_reloc_map); i ++) | |
910 | if (elf32_arm_reloc_map[i].bfd_reloc_val == code) | |
911 | return & elf32_arm_howto_table[elf32_arm_reloc_map[i].elf_reloc_val]; | |
912 | ||
913 | return NULL; | |
914 | } | |
915 | } | |
916 | ||
917 | /* Support for core dump NOTE sections */ | |
918 | static bfd_boolean | |
919 | elf32_arm_nabi_grok_prstatus (abfd, note) | |
920 | bfd *abfd; | |
921 | Elf_Internal_Note *note; | |
922 | { | |
923 | int offset; | |
924 | size_t size; | |
925 | ||
926 | switch (note->descsz) | |
927 | { | |
928 | default: | |
929 | return FALSE; | |
930 | ||
931 | case 148: /* Linux/ARM 32-bit*/ | |
932 | /* pr_cursig */ | |
933 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
934 | ||
935 | /* pr_pid */ | |
936 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); | |
937 | ||
938 | /* pr_reg */ | |
939 | offset = 72; | |
940 | size = 72; | |
941 | ||
942 | break; | |
943 | } | |
944 | ||
945 | /* Make a ".reg/999" section. */ | |
946 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
947 | size, note->descpos + offset); | |
948 | } | |
949 | ||
950 | static bfd_boolean | |
951 | elf32_arm_nabi_grok_psinfo (abfd, note) | |
952 | bfd *abfd; | |
953 | Elf_Internal_Note *note; | |
954 | { | |
955 | switch (note->descsz) | |
956 | { | |
957 | default: | |
958 | return FALSE; | |
959 | ||
960 | case 124: /* Linux/ARM elf_prpsinfo */ | |
961 | elf_tdata (abfd)->core_program | |
962 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); | |
963 | elf_tdata (abfd)->core_command | |
964 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); | |
965 | } | |
966 | ||
967 | /* Note that for some reason, a spurious space is tacked | |
968 | onto the end of the args in some (at least one anyway) | |
969 | implementations, so strip it off if it exists. */ | |
970 | ||
971 | { | |
972 | char *command = elf_tdata (abfd)->core_command; | |
973 | int n = strlen (command); | |
974 | ||
975 | if (0 < n && command[n - 1] == ' ') | |
976 | command[n - 1] = '\0'; | |
977 | } | |
978 | ||
979 | return TRUE; | |
980 | } | |
981 | ||
982 | #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec | |
983 | #define TARGET_LITTLE_NAME "elf32-littlearm" | |
984 | #define TARGET_BIG_SYM bfd_elf32_bigarm_vec | |
985 | #define TARGET_BIG_NAME "elf32-bigarm" | |
986 | ||
987 | #define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus | |
988 | #define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo | |
989 | ||
acf8aed4 AM |
990 | #ifndef USE_REL |
991 | #define USE_REL 0 | |
992 | #endif | |
993 | ||
252b5132 RH |
994 | typedef unsigned long int insn32; |
995 | typedef unsigned short int insn16; | |
996 | ||
8cb51566 | 997 | /* In lieu of proper flags, assume all EABIv4 objects are interworkable. */ |
57e8b36a | 998 | #define INTERWORK_FLAG(abfd) \ |
8cb51566 | 999 | (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) == EF_ARM_EABI_VER4 \ |
85a84e7a | 1000 | || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK)) |
9b485d32 | 1001 | |
252b5132 RH |
1002 | /* The linker script knows the section names for placement. |
1003 | The entry_names are used to do simple name mangling on the stubs. | |
1004 | Given a function name, and its type, the stub can be found. The | |
9b485d32 | 1005 | name can be changed. The only requirement is the %s be present. */ |
252b5132 RH |
1006 | #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t" |
1007 | #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb" | |
1008 | ||
1009 | #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7" | |
1010 | #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm" | |
1011 | ||
1012 | /* The name of the dynamic interpreter. This is put in the .interp | |
1013 | section. */ | |
1014 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
1015 | ||
5e681ec4 PB |
1016 | #ifdef FOUR_WORD_PLT |
1017 | ||
252b5132 RH |
1018 | /* The first entry in a procedure linkage table looks like |
1019 | this. It is set up so that any shared library function that is | |
59f2c4e7 | 1020 | called before the relocation has been set up calls the dynamic |
9b485d32 | 1021 | linker first. */ |
e5a52504 | 1022 | static const bfd_vma elf32_arm_plt0_entry [] = |
5e681ec4 PB |
1023 | { |
1024 | 0xe52de004, /* str lr, [sp, #-4]! */ | |
1025 | 0xe59fe010, /* ldr lr, [pc, #16] */ | |
1026 | 0xe08fe00e, /* add lr, pc, lr */ | |
1027 | 0xe5bef008, /* ldr pc, [lr, #8]! */ | |
1028 | }; | |
1029 | ||
1030 | /* Subsequent entries in a procedure linkage table look like | |
1031 | this. */ | |
e5a52504 | 1032 | static const bfd_vma elf32_arm_plt_entry [] = |
5e681ec4 PB |
1033 | { |
1034 | 0xe28fc600, /* add ip, pc, #NN */ | |
1035 | 0xe28cca00, /* add ip, ip, #NN */ | |
1036 | 0xe5bcf000, /* ldr pc, [ip, #NN]! */ | |
1037 | 0x00000000, /* unused */ | |
1038 | }; | |
1039 | ||
1040 | #else | |
1041 | ||
5e681ec4 PB |
1042 | /* The first entry in a procedure linkage table looks like |
1043 | this. It is set up so that any shared library function that is | |
1044 | called before the relocation has been set up calls the dynamic | |
1045 | linker first. */ | |
e5a52504 | 1046 | static const bfd_vma elf32_arm_plt0_entry [] = |
917583ad | 1047 | { |
5e681ec4 PB |
1048 | 0xe52de004, /* str lr, [sp, #-4]! */ |
1049 | 0xe59fe004, /* ldr lr, [pc, #4] */ | |
1050 | 0xe08fe00e, /* add lr, pc, lr */ | |
1051 | 0xe5bef008, /* ldr pc, [lr, #8]! */ | |
1052 | 0x00000000, /* &GOT[0] - . */ | |
917583ad | 1053 | }; |
252b5132 RH |
1054 | |
1055 | /* Subsequent entries in a procedure linkage table look like | |
1056 | this. */ | |
e5a52504 | 1057 | static const bfd_vma elf32_arm_plt_entry [] = |
5e681ec4 PB |
1058 | { |
1059 | 0xe28fc600, /* add ip, pc, #0xNN00000 */ | |
1060 | 0xe28cca00, /* add ip, ip, #0xNN000 */ | |
1061 | 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */ | |
1062 | }; | |
1063 | ||
1064 | #endif | |
252b5132 | 1065 | |
b7693d02 DJ |
1066 | /* An initial stub used if the PLT entry is referenced from Thumb code. */ |
1067 | #define PLT_THUMB_STUB_SIZE 4 | |
1068 | static const bfd_vma elf32_arm_plt_thumb_stub [] = | |
1069 | { | |
1070 | 0x4778, /* bx pc */ | |
1071 | 0x46c0 /* nop */ | |
1072 | }; | |
1073 | ||
e5a52504 MM |
1074 | /* The entries in a PLT when using a DLL-based target with multiple |
1075 | address spaces. */ | |
1076 | static const bfd_vma elf32_arm_symbian_plt_entry [] = | |
1077 | { | |
1078 | 0xe51ff004, /* ldr pr, [pc, #-4] */ | |
1079 | 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */ | |
1080 | }; | |
1081 | ||
e489d0ae PB |
1082 | /* Used to build a map of a section. This is required for mixed-endian |
1083 | code/data. */ | |
1084 | ||
1085 | typedef struct elf32_elf_section_map | |
1086 | { | |
1087 | bfd_vma vma; | |
1088 | char type; | |
1089 | } | |
1090 | elf32_arm_section_map; | |
1091 | ||
1092 | struct _arm_elf_section_data | |
1093 | { | |
1094 | struct bfd_elf_section_data elf; | |
1095 | int mapcount; | |
1096 | elf32_arm_section_map *map; | |
1097 | }; | |
1098 | ||
1099 | #define elf32_arm_section_data(sec) \ | |
1100 | ((struct _arm_elf_section_data *) elf_section_data (sec)) | |
1101 | ||
252b5132 RH |
1102 | /* The ARM linker needs to keep track of the number of relocs that it |
1103 | decides to copy in check_relocs for each symbol. This is so that | |
1104 | it can discard PC relative relocs if it doesn't need them when | |
1105 | linking with -Bsymbolic. We store the information in a field | |
1106 | extending the regular ELF linker hash table. */ | |
1107 | ||
1108 | /* This structure keeps track of the number of PC relative relocs we | |
1109 | have copied for a given symbol. */ | |
5e681ec4 | 1110 | struct elf32_arm_relocs_copied |
917583ad NC |
1111 | { |
1112 | /* Next section. */ | |
5e681ec4 | 1113 | struct elf32_arm_relocs_copied * next; |
917583ad NC |
1114 | /* A section in dynobj. */ |
1115 | asection * section; | |
1116 | /* Number of relocs copied in this section. */ | |
1117 | bfd_size_type count; | |
1118 | }; | |
252b5132 | 1119 | |
ba96a88f | 1120 | /* Arm ELF linker hash entry. */ |
252b5132 | 1121 | struct elf32_arm_link_hash_entry |
917583ad NC |
1122 | { |
1123 | struct elf_link_hash_entry root; | |
252b5132 | 1124 | |
917583ad | 1125 | /* Number of PC relative relocs copied for this symbol. */ |
5e681ec4 | 1126 | struct elf32_arm_relocs_copied * relocs_copied; |
b7693d02 DJ |
1127 | |
1128 | /* We reference count Thumb references to a PLT entry separately, | |
1129 | so that we can emit the Thumb trampoline only if needed. */ | |
1130 | bfd_signed_vma plt_thumb_refcount; | |
1131 | ||
1132 | /* Since PLT entries have variable size if the Thumb prologue is | |
1133 | used, we need to record the index into .got.plt instead of | |
1134 | recomputing it from the PLT offset. */ | |
1135 | bfd_signed_vma plt_got_offset; | |
917583ad | 1136 | }; |
252b5132 | 1137 | |
252b5132 | 1138 | /* Traverse an arm ELF linker hash table. */ |
252b5132 RH |
1139 | #define elf32_arm_link_hash_traverse(table, func, info) \ |
1140 | (elf_link_hash_traverse \ | |
1141 | (&(table)->root, \ | |
b7693d02 | 1142 | (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
252b5132 RH |
1143 | (info))) |
1144 | ||
1145 | /* Get the ARM elf linker hash table from a link_info structure. */ | |
1146 | #define elf32_arm_hash_table(info) \ | |
1147 | ((struct elf32_arm_link_hash_table *) ((info)->hash)) | |
1148 | ||
9b485d32 | 1149 | /* ARM ELF linker hash table. */ |
252b5132 | 1150 | struct elf32_arm_link_hash_table |
917583ad NC |
1151 | { |
1152 | /* The main hash table. */ | |
1153 | struct elf_link_hash_table root; | |
252b5132 | 1154 | |
4cc11e76 | 1155 | /* The size in bytes of the section containing the Thumb-to-ARM glue. */ |
dc810e39 | 1156 | bfd_size_type thumb_glue_size; |
252b5132 | 1157 | |
4cc11e76 | 1158 | /* The size in bytes of the section containing the ARM-to-Thumb glue. */ |
dc810e39 | 1159 | bfd_size_type arm_glue_size; |
252b5132 | 1160 | |
4cc11e76 | 1161 | /* An arbitrary input BFD chosen to hold the glue sections. */ |
917583ad | 1162 | bfd * bfd_of_glue_owner; |
ba96a88f | 1163 | |
917583ad NC |
1164 | /* A boolean indicating whether knowledge of the ARM's pipeline |
1165 | length should be applied by the linker. */ | |
1166 | int no_pipeline_knowledge; | |
5e681ec4 | 1167 | |
e489d0ae PB |
1168 | /* Nonzero to output a BE8 image. */ |
1169 | int byteswap_code; | |
1170 | ||
9c504268 PB |
1171 | /* Zero if R_ARM_TARGET1 means R_ARM_ABS32. |
1172 | Nonzero if R_ARM_TARGET1 means R_ARM_ABS32. */ | |
1173 | int target1_is_rel; | |
1174 | ||
eb043451 PB |
1175 | /* The relocation to use for R_ARM_TARGET2 relocations. */ |
1176 | int target2_reloc; | |
1177 | ||
e5a52504 MM |
1178 | /* The number of bytes in the initial entry in the PLT. */ |
1179 | bfd_size_type plt_header_size; | |
1180 | ||
1181 | /* The number of bytes in the subsequent PLT etries. */ | |
1182 | bfd_size_type plt_entry_size; | |
1183 | ||
1184 | /* True if the target system is Symbian OS. */ | |
1185 | int symbian_p; | |
1186 | ||
5e681ec4 PB |
1187 | /* Short-cuts to get to dynamic linker sections. */ |
1188 | asection *sgot; | |
1189 | asection *sgotplt; | |
1190 | asection *srelgot; | |
1191 | asection *splt; | |
1192 | asection *srelplt; | |
1193 | asection *sdynbss; | |
1194 | asection *srelbss; | |
1195 | ||
1196 | /* Small local sym to section mapping cache. */ | |
1197 | struct sym_sec_cache sym_sec; | |
b7693d02 DJ |
1198 | |
1199 | /* For convenience in allocate_dynrelocs. */ | |
1200 | bfd * obfd; | |
917583ad | 1201 | }; |
252b5132 | 1202 | |
780a67af NC |
1203 | /* Create an entry in an ARM ELF linker hash table. */ |
1204 | ||
1205 | static struct bfd_hash_entry * | |
57e8b36a NC |
1206 | elf32_arm_link_hash_newfunc (struct bfd_hash_entry * entry, |
1207 | struct bfd_hash_table * table, | |
1208 | const char * string) | |
780a67af NC |
1209 | { |
1210 | struct elf32_arm_link_hash_entry * ret = | |
1211 | (struct elf32_arm_link_hash_entry *) entry; | |
1212 | ||
1213 | /* Allocate the structure if it has not already been allocated by a | |
1214 | subclass. */ | |
1215 | if (ret == (struct elf32_arm_link_hash_entry *) NULL) | |
57e8b36a NC |
1216 | ret = bfd_hash_allocate (table, sizeof (struct elf32_arm_link_hash_entry)); |
1217 | if (ret == NULL) | |
780a67af NC |
1218 | return (struct bfd_hash_entry *) ret; |
1219 | ||
1220 | /* Call the allocation method of the superclass. */ | |
1221 | ret = ((struct elf32_arm_link_hash_entry *) | |
1222 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
1223 | table, string)); | |
57e8b36a | 1224 | if (ret != NULL) |
b7693d02 DJ |
1225 | { |
1226 | ret->relocs_copied = NULL; | |
1227 | ret->plt_thumb_refcount = 0; | |
1228 | ret->plt_got_offset = -1; | |
1229 | } | |
780a67af NC |
1230 | |
1231 | return (struct bfd_hash_entry *) ret; | |
1232 | } | |
1233 | ||
5e681ec4 PB |
1234 | /* Create .got, .gotplt, and .rel.got sections in DYNOBJ, and set up |
1235 | shortcuts to them in our hash table. */ | |
1236 | ||
1237 | static bfd_boolean | |
57e8b36a | 1238 | create_got_section (bfd *dynobj, struct bfd_link_info *info) |
5e681ec4 PB |
1239 | { |
1240 | struct elf32_arm_link_hash_table *htab; | |
1241 | ||
e5a52504 MM |
1242 | htab = elf32_arm_hash_table (info); |
1243 | /* BPABI objects never have a GOT, or associated sections. */ | |
1244 | if (htab->symbian_p) | |
1245 | return TRUE; | |
1246 | ||
5e681ec4 PB |
1247 | if (! _bfd_elf_create_got_section (dynobj, info)) |
1248 | return FALSE; | |
1249 | ||
5e681ec4 PB |
1250 | htab->sgot = bfd_get_section_by_name (dynobj, ".got"); |
1251 | htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1252 | if (!htab->sgot || !htab->sgotplt) | |
1253 | abort (); | |
1254 | ||
1255 | htab->srelgot = bfd_make_section (dynobj, ".rel.got"); | |
1256 | if (htab->srelgot == NULL | |
1257 | || ! bfd_set_section_flags (dynobj, htab->srelgot, | |
1258 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
1259 | | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
1260 | | SEC_READONLY)) | |
1261 | || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2)) | |
1262 | return FALSE; | |
1263 | return TRUE; | |
1264 | } | |
1265 | ||
1266 | /* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and | |
1267 | .rel.bss sections in DYNOBJ, and set up shortcuts to them in our | |
1268 | hash table. */ | |
1269 | ||
1270 | static bfd_boolean | |
57e8b36a | 1271 | elf32_arm_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5e681ec4 PB |
1272 | { |
1273 | struct elf32_arm_link_hash_table *htab; | |
1274 | ||
1275 | htab = elf32_arm_hash_table (info); | |
1276 | if (!htab->sgot && !create_got_section (dynobj, info)) | |
1277 | return FALSE; | |
1278 | ||
1279 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
1280 | return FALSE; | |
1281 | ||
1282 | htab->splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1283 | htab->srelplt = bfd_get_section_by_name (dynobj, ".rel.plt"); | |
1284 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
1285 | if (!info->shared) | |
1286 | htab->srelbss = bfd_get_section_by_name (dynobj, ".rel.bss"); | |
1287 | ||
e5a52504 MM |
1288 | if (!htab->splt |
1289 | || !htab->srelplt | |
1290 | || !htab->sdynbss | |
5e681ec4 PB |
1291 | || (!info->shared && !htab->srelbss)) |
1292 | abort (); | |
1293 | ||
1294 | return TRUE; | |
1295 | } | |
1296 | ||
1297 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
1298 | ||
1299 | static void | |
1300 | elf32_arm_copy_indirect_symbol (const struct elf_backend_data *bed, | |
1301 | struct elf_link_hash_entry *dir, | |
1302 | struct elf_link_hash_entry *ind) | |
1303 | { | |
1304 | struct elf32_arm_link_hash_entry *edir, *eind; | |
1305 | ||
1306 | edir = (struct elf32_arm_link_hash_entry *) dir; | |
1307 | eind = (struct elf32_arm_link_hash_entry *) ind; | |
1308 | ||
1309 | if (eind->relocs_copied != NULL) | |
1310 | { | |
1311 | if (edir->relocs_copied != NULL) | |
1312 | { | |
1313 | struct elf32_arm_relocs_copied **pp; | |
1314 | struct elf32_arm_relocs_copied *p; | |
1315 | ||
1316 | if (ind->root.type == bfd_link_hash_indirect) | |
1317 | abort (); | |
1318 | ||
1319 | /* Add reloc counts against the weak sym to the strong sym | |
1320 | list. Merge any entries against the same section. */ | |
1321 | for (pp = &eind->relocs_copied; (p = *pp) != NULL; ) | |
1322 | { | |
1323 | struct elf32_arm_relocs_copied *q; | |
1324 | ||
1325 | for (q = edir->relocs_copied; q != NULL; q = q->next) | |
1326 | if (q->section == p->section) | |
1327 | { | |
5e681ec4 PB |
1328 | q->count += p->count; |
1329 | *pp = p->next; | |
1330 | break; | |
1331 | } | |
1332 | if (q == NULL) | |
1333 | pp = &p->next; | |
1334 | } | |
1335 | *pp = edir->relocs_copied; | |
1336 | } | |
1337 | ||
1338 | edir->relocs_copied = eind->relocs_copied; | |
1339 | eind->relocs_copied = NULL; | |
1340 | } | |
1341 | ||
b7693d02 DJ |
1342 | /* If the direct symbol already has an associated PLT entry, the |
1343 | indirect symbol should not. If it doesn't, swap refcount information | |
1344 | from the indirect symbol. */ | |
1345 | if (edir->plt_thumb_refcount == 0) | |
1346 | { | |
1347 | edir->plt_thumb_refcount = eind->plt_thumb_refcount; | |
1348 | eind->plt_thumb_refcount = 0; | |
1349 | } | |
1350 | else | |
1351 | BFD_ASSERT (eind->plt_thumb_refcount == 0); | |
1352 | ||
5e681ec4 PB |
1353 | _bfd_elf_link_hash_copy_indirect (bed, dir, ind); |
1354 | } | |
1355 | ||
9b485d32 | 1356 | /* Create an ARM elf linker hash table. */ |
252b5132 RH |
1357 | |
1358 | static struct bfd_link_hash_table * | |
57e8b36a | 1359 | elf32_arm_link_hash_table_create (bfd *abfd) |
252b5132 RH |
1360 | { |
1361 | struct elf32_arm_link_hash_table *ret; | |
dc810e39 | 1362 | bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table); |
252b5132 | 1363 | |
57e8b36a NC |
1364 | ret = bfd_malloc (amt); |
1365 | if (ret == NULL) | |
252b5132 RH |
1366 | return NULL; |
1367 | ||
57e8b36a | 1368 | if (!_bfd_elf_link_hash_table_init (& ret->root, abfd, |
780a67af | 1369 | elf32_arm_link_hash_newfunc)) |
252b5132 | 1370 | { |
e2d34d7d | 1371 | free (ret); |
252b5132 RH |
1372 | return NULL; |
1373 | } | |
1374 | ||
5e681ec4 PB |
1375 | ret->sgot = NULL; |
1376 | ret->sgotplt = NULL; | |
1377 | ret->srelgot = NULL; | |
1378 | ret->splt = NULL; | |
1379 | ret->srelplt = NULL; | |
1380 | ret->sdynbss = NULL; | |
1381 | ret->srelbss = NULL; | |
252b5132 RH |
1382 | ret->thumb_glue_size = 0; |
1383 | ret->arm_glue_size = 0; | |
1384 | ret->bfd_of_glue_owner = NULL; | |
ba96a88f | 1385 | ret->no_pipeline_knowledge = 0; |
e489d0ae | 1386 | ret->byteswap_code = 0; |
9c504268 | 1387 | ret->target1_is_rel = 0; |
eb043451 | 1388 | ret->target2_reloc = R_ARM_NONE; |
e5a52504 MM |
1389 | #ifdef FOUR_WORD_PLT |
1390 | ret->plt_header_size = 16; | |
1391 | ret->plt_entry_size = 16; | |
1392 | #else | |
1393 | ret->plt_header_size = 20; | |
1394 | ret->plt_entry_size = 12; | |
1395 | #endif | |
1396 | ret->symbian_p = 0; | |
5e681ec4 | 1397 | ret->sym_sec.abfd = NULL; |
b7693d02 | 1398 | ret->obfd = abfd; |
252b5132 RH |
1399 | |
1400 | return &ret->root.root; | |
1401 | } | |
1402 | ||
9b485d32 NC |
1403 | /* Locate the Thumb encoded calling stub for NAME. */ |
1404 | ||
252b5132 | 1405 | static struct elf_link_hash_entry * |
57e8b36a NC |
1406 | find_thumb_glue (struct bfd_link_info *link_info, |
1407 | const char *name, | |
1408 | bfd *input_bfd) | |
252b5132 RH |
1409 | { |
1410 | char *tmp_name; | |
1411 | struct elf_link_hash_entry *hash; | |
1412 | struct elf32_arm_link_hash_table *hash_table; | |
1413 | ||
1414 | /* We need a pointer to the armelf specific hash table. */ | |
1415 | hash_table = elf32_arm_hash_table (link_info); | |
1416 | ||
57e8b36a NC |
1417 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
1418 | + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1); | |
252b5132 RH |
1419 | |
1420 | BFD_ASSERT (tmp_name); | |
1421 | ||
1422 | sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); | |
1423 | ||
1424 | hash = elf_link_hash_lookup | |
b34976b6 | 1425 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 RH |
1426 | |
1427 | if (hash == NULL) | |
1428 | /* xgettext:c-format */ | |
d003868e AM |
1429 | (*_bfd_error_handler) (_("%B: unable to find THUMB glue '%s' for `%s'"), |
1430 | input_bfd, tmp_name, name); | |
252b5132 RH |
1431 | |
1432 | free (tmp_name); | |
1433 | ||
1434 | return hash; | |
1435 | } | |
1436 | ||
9b485d32 NC |
1437 | /* Locate the ARM encoded calling stub for NAME. */ |
1438 | ||
252b5132 | 1439 | static struct elf_link_hash_entry * |
57e8b36a NC |
1440 | find_arm_glue (struct bfd_link_info *link_info, |
1441 | const char *name, | |
1442 | bfd *input_bfd) | |
252b5132 RH |
1443 | { |
1444 | char *tmp_name; | |
1445 | struct elf_link_hash_entry *myh; | |
1446 | struct elf32_arm_link_hash_table *hash_table; | |
1447 | ||
1448 | /* We need a pointer to the elfarm specific hash table. */ | |
1449 | hash_table = elf32_arm_hash_table (link_info); | |
1450 | ||
57e8b36a NC |
1451 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
1452 | + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1); | |
252b5132 RH |
1453 | |
1454 | BFD_ASSERT (tmp_name); | |
1455 | ||
1456 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); | |
1457 | ||
1458 | myh = elf_link_hash_lookup | |
b34976b6 | 1459 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 RH |
1460 | |
1461 | if (myh == NULL) | |
1462 | /* xgettext:c-format */ | |
d003868e AM |
1463 | (*_bfd_error_handler) (_("%B: unable to find ARM glue '%s' for `%s'"), |
1464 | input_bfd, tmp_name, name); | |
252b5132 RH |
1465 | |
1466 | free (tmp_name); | |
1467 | ||
1468 | return myh; | |
1469 | } | |
1470 | ||
9b485d32 | 1471 | /* ARM->Thumb glue: |
252b5132 RH |
1472 | |
1473 | .arm | |
1474 | __func_from_arm: | |
1475 | ldr r12, __func_addr | |
1476 | bx r12 | |
1477 | __func_addr: | |
9b485d32 | 1478 | .word func @ behave as if you saw a ARM_32 reloc. */ |
252b5132 RH |
1479 | |
1480 | #define ARM2THUMB_GLUE_SIZE 12 | |
1481 | static const insn32 a2t1_ldr_insn = 0xe59fc000; | |
1482 | static const insn32 a2t2_bx_r12_insn = 0xe12fff1c; | |
1483 | static const insn32 a2t3_func_addr_insn = 0x00000001; | |
1484 | ||
9b485d32 | 1485 | /* Thumb->ARM: Thumb->(non-interworking aware) ARM |
252b5132 RH |
1486 | |
1487 | .thumb .thumb | |
1488 | .align 2 .align 2 | |
1489 | __func_from_thumb: __func_from_thumb: | |
1490 | bx pc push {r6, lr} | |
1491 | nop ldr r6, __func_addr | |
1492 | .arm mov lr, pc | |
1493 | __func_change_to_arm: bx r6 | |
1494 | b func .arm | |
1495 | __func_back_to_thumb: | |
1496 | ldmia r13! {r6, lr} | |
1497 | bx lr | |
1498 | __func_addr: | |
9b485d32 | 1499 | .word func */ |
252b5132 RH |
1500 | |
1501 | #define THUMB2ARM_GLUE_SIZE 8 | |
1502 | static const insn16 t2a1_bx_pc_insn = 0x4778; | |
1503 | static const insn16 t2a2_noop_insn = 0x46c0; | |
1504 | static const insn32 t2a3_b_insn = 0xea000000; | |
1505 | ||
7e392df6 | 1506 | #ifndef ELFARM_NABI_C_INCLUDED |
b34976b6 | 1507 | bfd_boolean |
57e8b36a | 1508 | bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info * info) |
252b5132 RH |
1509 | { |
1510 | asection * s; | |
1511 | bfd_byte * foo; | |
1512 | struct elf32_arm_link_hash_table * globals; | |
1513 | ||
1514 | globals = elf32_arm_hash_table (info); | |
1515 | ||
1516 | BFD_ASSERT (globals != NULL); | |
1517 | ||
1518 | if (globals->arm_glue_size != 0) | |
1519 | { | |
1520 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
1521 | ||
dc810e39 AM |
1522 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, |
1523 | ARM2THUMB_GLUE_SECTION_NAME); | |
252b5132 RH |
1524 | |
1525 | BFD_ASSERT (s != NULL); | |
1526 | ||
57e8b36a | 1527 | foo = bfd_alloc (globals->bfd_of_glue_owner, globals->arm_glue_size); |
252b5132 | 1528 | |
eea6121a | 1529 | s->size = globals->arm_glue_size; |
252b5132 RH |
1530 | s->contents = foo; |
1531 | } | |
1532 | ||
1533 | if (globals->thumb_glue_size != 0) | |
1534 | { | |
1535 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
1536 | ||
1537 | s = bfd_get_section_by_name | |
1538 | (globals->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME); | |
1539 | ||
1540 | BFD_ASSERT (s != NULL); | |
1541 | ||
57e8b36a | 1542 | foo = bfd_alloc (globals->bfd_of_glue_owner, globals->thumb_glue_size); |
252b5132 | 1543 | |
eea6121a | 1544 | s->size = globals->thumb_glue_size; |
252b5132 RH |
1545 | s->contents = foo; |
1546 | } | |
1547 | ||
b34976b6 | 1548 | return TRUE; |
252b5132 RH |
1549 | } |
1550 | ||
1551 | static void | |
57e8b36a NC |
1552 | record_arm_to_thumb_glue (struct bfd_link_info * link_info, |
1553 | struct elf_link_hash_entry * h) | |
252b5132 RH |
1554 | { |
1555 | const char * name = h->root.root.string; | |
63b0f745 | 1556 | asection * s; |
252b5132 RH |
1557 | char * tmp_name; |
1558 | struct elf_link_hash_entry * myh; | |
14a793b2 | 1559 | struct bfd_link_hash_entry * bh; |
252b5132 | 1560 | struct elf32_arm_link_hash_table * globals; |
dc810e39 | 1561 | bfd_vma val; |
252b5132 RH |
1562 | |
1563 | globals = elf32_arm_hash_table (link_info); | |
1564 | ||
1565 | BFD_ASSERT (globals != NULL); | |
1566 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
1567 | ||
1568 | s = bfd_get_section_by_name | |
1569 | (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME); | |
1570 | ||
252b5132 RH |
1571 | BFD_ASSERT (s != NULL); |
1572 | ||
57e8b36a | 1573 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1); |
252b5132 RH |
1574 | |
1575 | BFD_ASSERT (tmp_name); | |
1576 | ||
1577 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); | |
1578 | ||
1579 | myh = elf_link_hash_lookup | |
b34976b6 | 1580 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 RH |
1581 | |
1582 | if (myh != NULL) | |
1583 | { | |
9b485d32 | 1584 | /* We've already seen this guy. */ |
252b5132 | 1585 | free (tmp_name); |
9b485d32 | 1586 | return; |
252b5132 RH |
1587 | } |
1588 | ||
57e8b36a NC |
1589 | /* The only trick here is using hash_table->arm_glue_size as the value. |
1590 | Even though the section isn't allocated yet, this is where we will be | |
1591 | putting it. */ | |
14a793b2 | 1592 | bh = NULL; |
dc810e39 AM |
1593 | val = globals->arm_glue_size + 1; |
1594 | _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner, | |
1595 | tmp_name, BSF_GLOBAL, s, val, | |
b34976b6 | 1596 | NULL, TRUE, FALSE, &bh); |
252b5132 | 1597 | |
b7693d02 DJ |
1598 | myh = (struct elf_link_hash_entry *) bh; |
1599 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
1600 | myh->forced_local = 1; | |
1601 | ||
252b5132 RH |
1602 | free (tmp_name); |
1603 | ||
1604 | globals->arm_glue_size += ARM2THUMB_GLUE_SIZE; | |
1605 | ||
1606 | return; | |
1607 | } | |
1608 | ||
1609 | static void | |
57e8b36a NC |
1610 | record_thumb_to_arm_glue (struct bfd_link_info *link_info, |
1611 | struct elf_link_hash_entry *h) | |
252b5132 RH |
1612 | { |
1613 | const char *name = h->root.root.string; | |
63b0f745 | 1614 | asection *s; |
252b5132 RH |
1615 | char *tmp_name; |
1616 | struct elf_link_hash_entry *myh; | |
14a793b2 | 1617 | struct bfd_link_hash_entry *bh; |
252b5132 | 1618 | struct elf32_arm_link_hash_table *hash_table; |
dc810e39 | 1619 | bfd_vma val; |
252b5132 RH |
1620 | |
1621 | hash_table = elf32_arm_hash_table (link_info); | |
1622 | ||
1623 | BFD_ASSERT (hash_table != NULL); | |
1624 | BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL); | |
1625 | ||
1626 | s = bfd_get_section_by_name | |
1627 | (hash_table->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME); | |
1628 | ||
1629 | BFD_ASSERT (s != NULL); | |
1630 | ||
57e8b36a NC |
1631 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
1632 | + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1); | |
252b5132 RH |
1633 | |
1634 | BFD_ASSERT (tmp_name); | |
1635 | ||
1636 | sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); | |
1637 | ||
1638 | myh = elf_link_hash_lookup | |
b34976b6 | 1639 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 RH |
1640 | |
1641 | if (myh != NULL) | |
1642 | { | |
9b485d32 | 1643 | /* We've already seen this guy. */ |
252b5132 | 1644 | free (tmp_name); |
9b485d32 | 1645 | return; |
252b5132 RH |
1646 | } |
1647 | ||
14a793b2 | 1648 | bh = NULL; |
dc810e39 AM |
1649 | val = hash_table->thumb_glue_size + 1; |
1650 | _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, | |
1651 | tmp_name, BSF_GLOBAL, s, val, | |
b34976b6 | 1652 | NULL, TRUE, FALSE, &bh); |
252b5132 | 1653 | |
9b485d32 | 1654 | /* If we mark it 'Thumb', the disassembler will do a better job. */ |
14a793b2 | 1655 | myh = (struct elf_link_hash_entry *) bh; |
b7693d02 DJ |
1656 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC); |
1657 | myh->forced_local = 1; | |
252b5132 RH |
1658 | |
1659 | free (tmp_name); | |
1660 | ||
252b5132 RH |
1661 | #define CHANGE_TO_ARM "__%s_change_to_arm" |
1662 | #define BACK_FROM_ARM "__%s_back_from_arm" | |
1663 | ||
9b485d32 | 1664 | /* Allocate another symbol to mark where we switch to Arm mode. */ |
57e8b36a NC |
1665 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
1666 | + strlen (CHANGE_TO_ARM) + 1); | |
252b5132 RH |
1667 | |
1668 | BFD_ASSERT (tmp_name); | |
1669 | ||
1670 | sprintf (tmp_name, CHANGE_TO_ARM, name); | |
1671 | ||
14a793b2 | 1672 | bh = NULL; |
dc810e39 AM |
1673 | val = hash_table->thumb_glue_size + 4, |
1674 | _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, | |
1675 | tmp_name, BSF_LOCAL, s, val, | |
b34976b6 | 1676 | NULL, TRUE, FALSE, &bh); |
252b5132 RH |
1677 | |
1678 | free (tmp_name); | |
1679 | ||
1680 | hash_table->thumb_glue_size += THUMB2ARM_GLUE_SIZE; | |
1681 | ||
1682 | return; | |
1683 | } | |
1684 | ||
8afb0e02 NC |
1685 | /* Add the glue sections to ABFD. This function is called from the |
1686 | linker scripts in ld/emultempl/{armelf}.em. */ | |
9b485d32 | 1687 | |
b34976b6 | 1688 | bfd_boolean |
57e8b36a NC |
1689 | bfd_elf32_arm_add_glue_sections_to_bfd (bfd *abfd, |
1690 | struct bfd_link_info *info) | |
252b5132 | 1691 | { |
252b5132 RH |
1692 | flagword flags; |
1693 | asection *sec; | |
1694 | ||
8afb0e02 NC |
1695 | /* If we are only performing a partial |
1696 | link do not bother adding the glue. */ | |
1049f94e | 1697 | if (info->relocatable) |
b34976b6 | 1698 | return TRUE; |
252b5132 | 1699 | |
252b5132 RH |
1700 | sec = bfd_get_section_by_name (abfd, ARM2THUMB_GLUE_SECTION_NAME); |
1701 | ||
1702 | if (sec == NULL) | |
1703 | { | |
57db232e NC |
1704 | /* Note: we do not include the flag SEC_LINKER_CREATED, as this |
1705 | will prevent elf_link_input_bfd() from processing the contents | |
1706 | of this section. */ | |
811b4bf6 | 1707 | flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_CODE | SEC_READONLY; |
252b5132 RH |
1708 | |
1709 | sec = bfd_make_section (abfd, ARM2THUMB_GLUE_SECTION_NAME); | |
1710 | ||
1711 | if (sec == NULL | |
1712 | || !bfd_set_section_flags (abfd, sec, flags) | |
1713 | || !bfd_set_section_alignment (abfd, sec, 2)) | |
b34976b6 | 1714 | return FALSE; |
9a5aca8c | 1715 | |
57db232e NC |
1716 | /* Set the gc mark to prevent the section from being removed by garbage |
1717 | collection, despite the fact that no relocs refer to this section. */ | |
1718 | sec->gc_mark = 1; | |
252b5132 RH |
1719 | } |
1720 | ||
1721 | sec = bfd_get_section_by_name (abfd, THUMB2ARM_GLUE_SECTION_NAME); | |
1722 | ||
1723 | if (sec == NULL) | |
1724 | { | |
57e8b36a NC |
1725 | flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
1726 | | SEC_CODE | SEC_READONLY; | |
252b5132 RH |
1727 | |
1728 | sec = bfd_make_section (abfd, THUMB2ARM_GLUE_SECTION_NAME); | |
1729 | ||
1730 | if (sec == NULL | |
1731 | || !bfd_set_section_flags (abfd, sec, flags) | |
1732 | || !bfd_set_section_alignment (abfd, sec, 2)) | |
b34976b6 | 1733 | return FALSE; |
9a5aca8c | 1734 | |
57db232e | 1735 | sec->gc_mark = 1; |
252b5132 RH |
1736 | } |
1737 | ||
b34976b6 | 1738 | return TRUE; |
8afb0e02 NC |
1739 | } |
1740 | ||
1741 | /* Select a BFD to be used to hold the sections used by the glue code. | |
1742 | This function is called from the linker scripts in ld/emultempl/ | |
1743 | {armelf/pe}.em */ | |
1744 | ||
b34976b6 | 1745 | bfd_boolean |
57e8b36a | 1746 | bfd_elf32_arm_get_bfd_for_interworking (bfd *abfd, struct bfd_link_info *info) |
8afb0e02 NC |
1747 | { |
1748 | struct elf32_arm_link_hash_table *globals; | |
1749 | ||
1750 | /* If we are only performing a partial link | |
1751 | do not bother getting a bfd to hold the glue. */ | |
1049f94e | 1752 | if (info->relocatable) |
b34976b6 | 1753 | return TRUE; |
8afb0e02 | 1754 | |
b7693d02 DJ |
1755 | /* Make sure we don't attach the glue sections to a dynamic object. */ |
1756 | BFD_ASSERT (!(abfd->flags & DYNAMIC)); | |
1757 | ||
8afb0e02 NC |
1758 | globals = elf32_arm_hash_table (info); |
1759 | ||
1760 | BFD_ASSERT (globals != NULL); | |
1761 | ||
1762 | if (globals->bfd_of_glue_owner != NULL) | |
b34976b6 | 1763 | return TRUE; |
8afb0e02 | 1764 | |
252b5132 RH |
1765 | /* Save the bfd for later use. */ |
1766 | globals->bfd_of_glue_owner = abfd; | |
cedb70c5 | 1767 | |
b34976b6 | 1768 | return TRUE; |
252b5132 RH |
1769 | } |
1770 | ||
b34976b6 | 1771 | bfd_boolean |
57e8b36a NC |
1772 | bfd_elf32_arm_process_before_allocation (bfd *abfd, |
1773 | struct bfd_link_info *link_info, | |
1774 | int no_pipeline_knowledge, | |
eb043451 | 1775 | int byteswap_code) |
252b5132 RH |
1776 | { |
1777 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 1778 | Elf_Internal_Rela *internal_relocs = NULL; |
252b5132 RH |
1779 | Elf_Internal_Rela *irel, *irelend; |
1780 | bfd_byte *contents = NULL; | |
252b5132 RH |
1781 | |
1782 | asection *sec; | |
1783 | struct elf32_arm_link_hash_table *globals; | |
1784 | ||
1785 | /* If we are only performing a partial link do not bother | |
1786 | to construct any glue. */ | |
1049f94e | 1787 | if (link_info->relocatable) |
b34976b6 | 1788 | return TRUE; |
252b5132 RH |
1789 | |
1790 | /* Here we have a bfd that is to be included on the link. We have a hook | |
1791 | to do reloc rummaging, before section sizes are nailed down. */ | |
252b5132 RH |
1792 | globals = elf32_arm_hash_table (link_info); |
1793 | ||
1794 | BFD_ASSERT (globals != NULL); | |
1795 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
1796 | ||
ba96a88f | 1797 | globals->no_pipeline_knowledge = no_pipeline_knowledge; |
eb043451 | 1798 | |
e489d0ae PB |
1799 | if (byteswap_code && !bfd_big_endian (abfd)) |
1800 | { | |
d003868e AM |
1801 | _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."), |
1802 | abfd); | |
e489d0ae PB |
1803 | return FALSE; |
1804 | } | |
1805 | globals->byteswap_code = byteswap_code; | |
f21f3fe0 | 1806 | |
252b5132 RH |
1807 | /* Rummage around all the relocs and map the glue vectors. */ |
1808 | sec = abfd->sections; | |
1809 | ||
1810 | if (sec == NULL) | |
b34976b6 | 1811 | return TRUE; |
252b5132 RH |
1812 | |
1813 | for (; sec != NULL; sec = sec->next) | |
1814 | { | |
1815 | if (sec->reloc_count == 0) | |
1816 | continue; | |
1817 | ||
1818 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
252b5132 | 1819 | |
9b485d32 | 1820 | /* Load the relocs. */ |
6cdc0ccc | 1821 | internal_relocs |
57e8b36a | 1822 | = _bfd_elf_link_read_relocs (abfd, sec, (void *) NULL, |
45d6a902 | 1823 | (Elf_Internal_Rela *) NULL, FALSE); |
252b5132 | 1824 | |
6cdc0ccc AM |
1825 | if (internal_relocs == NULL) |
1826 | goto error_return; | |
252b5132 | 1827 | |
6cdc0ccc AM |
1828 | irelend = internal_relocs + sec->reloc_count; |
1829 | for (irel = internal_relocs; irel < irelend; irel++) | |
252b5132 RH |
1830 | { |
1831 | long r_type; | |
1832 | unsigned long r_index; | |
252b5132 RH |
1833 | |
1834 | struct elf_link_hash_entry *h; | |
1835 | ||
1836 | r_type = ELF32_R_TYPE (irel->r_info); | |
1837 | r_index = ELF32_R_SYM (irel->r_info); | |
1838 | ||
9b485d32 | 1839 | /* These are the only relocation types we care about. */ |
ba96a88f | 1840 | if ( r_type != R_ARM_PC24 |
b7693d02 | 1841 | && r_type != R_ARM_PLT32 |
5b5bb741 PB |
1842 | #ifndef OLD_ARM_ABI |
1843 | && r_type != R_ARM_CALL | |
1844 | && r_type != R_ARM_JUMP24 | |
1845 | #endif | |
252b5132 RH |
1846 | && r_type != R_ARM_THM_PC22) |
1847 | continue; | |
1848 | ||
1849 | /* Get the section contents if we haven't done so already. */ | |
1850 | if (contents == NULL) | |
1851 | { | |
1852 | /* Get cached copy if it exists. */ | |
1853 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
1854 | contents = elf_section_data (sec)->this_hdr.contents; | |
1855 | else | |
1856 | { | |
1857 | /* Go get them off disk. */ | |
57e8b36a | 1858 | if (! bfd_malloc_and_get_section (abfd, sec, &contents)) |
252b5132 RH |
1859 | goto error_return; |
1860 | } | |
1861 | } | |
1862 | ||
a7c10850 | 1863 | /* If the relocation is not against a symbol it cannot concern us. */ |
252b5132 RH |
1864 | h = NULL; |
1865 | ||
9b485d32 | 1866 | /* We don't care about local symbols. */ |
252b5132 RH |
1867 | if (r_index < symtab_hdr->sh_info) |
1868 | continue; | |
1869 | ||
9b485d32 | 1870 | /* This is an external symbol. */ |
252b5132 RH |
1871 | r_index -= symtab_hdr->sh_info; |
1872 | h = (struct elf_link_hash_entry *) | |
1873 | elf_sym_hashes (abfd)[r_index]; | |
1874 | ||
1875 | /* If the relocation is against a static symbol it must be within | |
1876 | the current section and so cannot be a cross ARM/Thumb relocation. */ | |
1877 | if (h == NULL) | |
1878 | continue; | |
1879 | ||
b7693d02 DJ |
1880 | /* If the call will go through a PLT entry then we do not need |
1881 | glue. */ | |
1882 | if (globals->splt != NULL && h->plt.offset != (bfd_vma) -1) | |
1883 | continue; | |
1884 | ||
252b5132 RH |
1885 | switch (r_type) |
1886 | { | |
1887 | case R_ARM_PC24: | |
5b5bb741 PB |
1888 | #ifndef OLD_ARM_ABI |
1889 | case R_ARM_CALL: | |
1890 | case R_ARM_JUMP24: | |
1891 | #endif | |
252b5132 | 1892 | /* This one is a call from arm code. We need to look up |
2f0ca46a | 1893 | the target of the call. If it is a thumb target, we |
252b5132 | 1894 | insert glue. */ |
252b5132 RH |
1895 | if (ELF_ST_TYPE(h->type) == STT_ARM_TFUNC) |
1896 | record_arm_to_thumb_glue (link_info, h); | |
1897 | break; | |
1898 | ||
1899 | case R_ARM_THM_PC22: | |
f21f3fe0 | 1900 | /* This one is a call from thumb code. We look |
2f0ca46a | 1901 | up the target of the call. If it is not a thumb |
bcbdc74c | 1902 | target, we insert glue. */ |
252b5132 RH |
1903 | if (ELF_ST_TYPE (h->type) != STT_ARM_TFUNC) |
1904 | record_thumb_to_arm_glue (link_info, h); | |
1905 | break; | |
1906 | ||
1907 | default: | |
1908 | break; | |
1909 | } | |
1910 | } | |
6cdc0ccc AM |
1911 | |
1912 | if (contents != NULL | |
1913 | && elf_section_data (sec)->this_hdr.contents != contents) | |
1914 | free (contents); | |
1915 | contents = NULL; | |
1916 | ||
1917 | if (internal_relocs != NULL | |
1918 | && elf_section_data (sec)->relocs != internal_relocs) | |
1919 | free (internal_relocs); | |
1920 | internal_relocs = NULL; | |
252b5132 RH |
1921 | } |
1922 | ||
b34976b6 | 1923 | return TRUE; |
9a5aca8c | 1924 | |
252b5132 | 1925 | error_return: |
6cdc0ccc AM |
1926 | if (contents != NULL |
1927 | && elf_section_data (sec)->this_hdr.contents != contents) | |
1928 | free (contents); | |
1929 | if (internal_relocs != NULL | |
1930 | && elf_section_data (sec)->relocs != internal_relocs) | |
1931 | free (internal_relocs); | |
9a5aca8c | 1932 | |
b34976b6 | 1933 | return FALSE; |
252b5132 | 1934 | } |
7e392df6 | 1935 | #endif |
252b5132 | 1936 | |
eb043451 PB |
1937 | |
1938 | #ifndef OLD_ARM_ABI | |
1939 | /* Set target relocation values needed during linking. */ | |
1940 | ||
1941 | void | |
1942 | bfd_elf32_arm_set_target_relocs (struct bfd_link_info *link_info, | |
1943 | int target1_is_rel, | |
1944 | char * target2_type) | |
1945 | { | |
1946 | struct elf32_arm_link_hash_table *globals; | |
1947 | ||
1948 | globals = elf32_arm_hash_table (link_info); | |
1949 | ||
1950 | globals->target1_is_rel = target1_is_rel; | |
1951 | if (strcmp (target2_type, "rel") == 0) | |
1952 | globals->target2_reloc = R_ARM_REL32; | |
eeac373a PB |
1953 | else if (strcmp (target2_type, "abs") == 0) |
1954 | globals->target2_reloc = R_ARM_ABS32; | |
eb043451 PB |
1955 | else if (strcmp (target2_type, "got-rel") == 0) |
1956 | globals->target2_reloc = R_ARM_GOT_PREL; | |
1957 | else | |
1958 | { | |
1959 | _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."), | |
1960 | target2_type); | |
1961 | } | |
1962 | } | |
1963 | #endif | |
1964 | ||
252b5132 RH |
1965 | /* The thumb form of a long branch is a bit finicky, because the offset |
1966 | encoding is split over two fields, each in it's own instruction. They | |
f21f3fe0 | 1967 | can occur in any order. So given a thumb form of long branch, and an |
252b5132 | 1968 | offset, insert the offset into the thumb branch and return finished |
f21f3fe0 | 1969 | instruction. |
252b5132 | 1970 | |
f21f3fe0 | 1971 | It takes two thumb instructions to encode the target address. Each has |
4cc11e76 | 1972 | 11 bits to invest. The upper 11 bits are stored in one (identified by |
f21f3fe0 UD |
1973 | H-0.. see below), the lower 11 bits are stored in the other (identified |
1974 | by H-1). | |
252b5132 | 1975 | |
f21f3fe0 | 1976 | Combine together and shifted left by 1 (it's a half word address) and |
252b5132 RH |
1977 | there you have it. |
1978 | ||
1979 | Op: 1111 = F, | |
1980 | H-0, upper address-0 = 000 | |
1981 | Op: 1111 = F, | |
1982 | H-1, lower address-0 = 800 | |
1983 | ||
f21f3fe0 | 1984 | They can be ordered either way, but the arm tools I've seen always put |
252b5132 RH |
1985 | the lower one first. It probably doesn't matter. krk@cygnus.com |
1986 | ||
1987 | XXX: Actually the order does matter. The second instruction (H-1) | |
1988 | moves the computed address into the PC, so it must be the second one | |
1989 | in the sequence. The problem, however is that whilst little endian code | |
1990 | stores the instructions in HI then LOW order, big endian code does the | |
dfc5f959 | 1991 | reverse. nickc@cygnus.com. */ |
252b5132 | 1992 | |
dfc5f959 NC |
1993 | #define LOW_HI_ORDER 0xF800F000 |
1994 | #define HI_LOW_ORDER 0xF000F800 | |
252b5132 RH |
1995 | |
1996 | static insn32 | |
57e8b36a | 1997 | insert_thumb_branch (insn32 br_insn, int rel_off) |
252b5132 RH |
1998 | { |
1999 | unsigned int low_bits; | |
2000 | unsigned int high_bits; | |
2001 | ||
252b5132 RH |
2002 | BFD_ASSERT ((rel_off & 1) != 1); |
2003 | ||
dfc5f959 NC |
2004 | rel_off >>= 1; /* Half word aligned address. */ |
2005 | low_bits = rel_off & 0x000007FF; /* The bottom 11 bits. */ | |
2006 | high_bits = (rel_off >> 11) & 0x000007FF; /* The top 11 bits. */ | |
252b5132 RH |
2007 | |
2008 | if ((br_insn & LOW_HI_ORDER) == LOW_HI_ORDER) | |
2009 | br_insn = LOW_HI_ORDER | (low_bits << 16) | high_bits; | |
2010 | else if ((br_insn & HI_LOW_ORDER) == HI_LOW_ORDER) | |
2011 | br_insn = HI_LOW_ORDER | (high_bits << 16) | low_bits; | |
2012 | else | |
9b485d32 | 2013 | /* FIXME: abort is probably not the right call. krk@cygnus.com */ |
57e8b36a | 2014 | abort (); /* Error - not a valid branch instruction form. */ |
252b5132 | 2015 | |
252b5132 RH |
2016 | return br_insn; |
2017 | } | |
2018 | ||
9b485d32 NC |
2019 | /* Thumb code calling an ARM function. */ |
2020 | ||
252b5132 | 2021 | static int |
57e8b36a NC |
2022 | elf32_thumb_to_arm_stub (struct bfd_link_info * info, |
2023 | const char * name, | |
2024 | bfd * input_bfd, | |
2025 | bfd * output_bfd, | |
2026 | asection * input_section, | |
2027 | bfd_byte * hit_data, | |
2028 | asection * sym_sec, | |
2029 | bfd_vma offset, | |
2030 | bfd_signed_vma addend, | |
2031 | bfd_vma val) | |
252b5132 | 2032 | { |
bcbdc74c | 2033 | asection * s = 0; |
dc810e39 | 2034 | bfd_vma my_offset; |
252b5132 RH |
2035 | unsigned long int tmp; |
2036 | long int ret_offset; | |
bcbdc74c NC |
2037 | struct elf_link_hash_entry * myh; |
2038 | struct elf32_arm_link_hash_table * globals; | |
252b5132 RH |
2039 | |
2040 | myh = find_thumb_glue (info, name, input_bfd); | |
2041 | if (myh == NULL) | |
b34976b6 | 2042 | return FALSE; |
252b5132 RH |
2043 | |
2044 | globals = elf32_arm_hash_table (info); | |
2045 | ||
2046 | BFD_ASSERT (globals != NULL); | |
2047 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
2048 | ||
2049 | my_offset = myh->root.u.def.value; | |
2050 | ||
2051 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
2052 | THUMB2ARM_GLUE_SECTION_NAME); | |
2053 | ||
2054 | BFD_ASSERT (s != NULL); | |
2055 | BFD_ASSERT (s->contents != NULL); | |
2056 | BFD_ASSERT (s->output_section != NULL); | |
2057 | ||
2058 | if ((my_offset & 0x01) == 0x01) | |
2059 | { | |
2060 | if (sym_sec != NULL | |
2061 | && sym_sec->owner != NULL | |
2062 | && !INTERWORK_FLAG (sym_sec->owner)) | |
2063 | { | |
8f615d07 | 2064 | (*_bfd_error_handler) |
d003868e AM |
2065 | (_("%B(%s): warning: interworking not enabled.\n" |
2066 | " first occurrence: %B: thumb call to arm"), | |
2067 | sym_sec->owner, input_bfd, name); | |
252b5132 | 2068 | |
b34976b6 | 2069 | return FALSE; |
252b5132 RH |
2070 | } |
2071 | ||
2072 | --my_offset; | |
2073 | myh->root.u.def.value = my_offset; | |
2074 | ||
dc810e39 | 2075 | bfd_put_16 (output_bfd, (bfd_vma) t2a1_bx_pc_insn, |
252b5132 RH |
2076 | s->contents + my_offset); |
2077 | ||
dc810e39 | 2078 | bfd_put_16 (output_bfd, (bfd_vma) t2a2_noop_insn, |
252b5132 RH |
2079 | s->contents + my_offset + 2); |
2080 | ||
2081 | ret_offset = | |
9b485d32 NC |
2082 | /* Address of destination of the stub. */ |
2083 | ((bfd_signed_vma) val) | |
252b5132 | 2084 | - ((bfd_signed_vma) |
57e8b36a NC |
2085 | /* Offset from the start of the current section |
2086 | to the start of the stubs. */ | |
9b485d32 NC |
2087 | (s->output_offset |
2088 | /* Offset of the start of this stub from the start of the stubs. */ | |
2089 | + my_offset | |
2090 | /* Address of the start of the current section. */ | |
2091 | + s->output_section->vma) | |
2092 | /* The branch instruction is 4 bytes into the stub. */ | |
2093 | + 4 | |
2094 | /* ARM branches work from the pc of the instruction + 8. */ | |
2095 | + 8); | |
252b5132 RH |
2096 | |
2097 | bfd_put_32 (output_bfd, | |
dc810e39 | 2098 | (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF), |
252b5132 RH |
2099 | s->contents + my_offset + 4); |
2100 | } | |
2101 | ||
2102 | BFD_ASSERT (my_offset <= globals->thumb_glue_size); | |
2103 | ||
427bfd90 NC |
2104 | /* Now go back and fix up the original BL insn to point to here. */ |
2105 | ret_offset = | |
2106 | /* Address of where the stub is located. */ | |
2107 | (s->output_section->vma + s->output_offset + my_offset) | |
2108 | /* Address of where the BL is located. */ | |
57e8b36a NC |
2109 | - (input_section->output_section->vma + input_section->output_offset |
2110 | + offset) | |
427bfd90 NC |
2111 | /* Addend in the relocation. */ |
2112 | - addend | |
2113 | /* Biassing for PC-relative addressing. */ | |
2114 | - 8; | |
252b5132 RH |
2115 | |
2116 | tmp = bfd_get_32 (input_bfd, hit_data | |
2117 | - input_section->vma); | |
2118 | ||
2119 | bfd_put_32 (output_bfd, | |
dc810e39 | 2120 | (bfd_vma) insert_thumb_branch (tmp, ret_offset), |
252b5132 RH |
2121 | hit_data - input_section->vma); |
2122 | ||
b34976b6 | 2123 | return TRUE; |
252b5132 RH |
2124 | } |
2125 | ||
9b485d32 NC |
2126 | /* Arm code calling a Thumb function. */ |
2127 | ||
252b5132 | 2128 | static int |
57e8b36a NC |
2129 | elf32_arm_to_thumb_stub (struct bfd_link_info * info, |
2130 | const char * name, | |
2131 | bfd * input_bfd, | |
2132 | bfd * output_bfd, | |
2133 | asection * input_section, | |
2134 | bfd_byte * hit_data, | |
2135 | asection * sym_sec, | |
2136 | bfd_vma offset, | |
2137 | bfd_signed_vma addend, | |
2138 | bfd_vma val) | |
252b5132 RH |
2139 | { |
2140 | unsigned long int tmp; | |
dc810e39 | 2141 | bfd_vma my_offset; |
bcbdc74c | 2142 | asection * s; |
252b5132 | 2143 | long int ret_offset; |
bcbdc74c NC |
2144 | struct elf_link_hash_entry * myh; |
2145 | struct elf32_arm_link_hash_table * globals; | |
252b5132 RH |
2146 | |
2147 | myh = find_arm_glue (info, name, input_bfd); | |
2148 | if (myh == NULL) | |
b34976b6 | 2149 | return FALSE; |
252b5132 RH |
2150 | |
2151 | globals = elf32_arm_hash_table (info); | |
2152 | ||
2153 | BFD_ASSERT (globals != NULL); | |
2154 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
2155 | ||
2156 | my_offset = myh->root.u.def.value; | |
2157 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
2158 | ARM2THUMB_GLUE_SECTION_NAME); | |
2159 | BFD_ASSERT (s != NULL); | |
2160 | BFD_ASSERT (s->contents != NULL); | |
2161 | BFD_ASSERT (s->output_section != NULL); | |
2162 | ||
2163 | if ((my_offset & 0x01) == 0x01) | |
2164 | { | |
2165 | if (sym_sec != NULL | |
2166 | && sym_sec->owner != NULL | |
2167 | && !INTERWORK_FLAG (sym_sec->owner)) | |
2168 | { | |
8f615d07 | 2169 | (*_bfd_error_handler) |
d003868e AM |
2170 | (_("%B(%s): warning: interworking not enabled.\n" |
2171 | " first occurrence: %B: arm call to thumb"), | |
2172 | sym_sec->owner, input_bfd, name); | |
252b5132 | 2173 | } |
9b485d32 | 2174 | |
252b5132 RH |
2175 | --my_offset; |
2176 | myh->root.u.def.value = my_offset; | |
2177 | ||
dc810e39 | 2178 | bfd_put_32 (output_bfd, (bfd_vma) a2t1_ldr_insn, |
252b5132 RH |
2179 | s->contents + my_offset); |
2180 | ||
dc810e39 | 2181 | bfd_put_32 (output_bfd, (bfd_vma) a2t2_bx_r12_insn, |
252b5132 RH |
2182 | s->contents + my_offset + 4); |
2183 | ||
2184 | /* It's a thumb address. Add the low order bit. */ | |
2185 | bfd_put_32 (output_bfd, val | a2t3_func_addr_insn, | |
2186 | s->contents + my_offset + 8); | |
2187 | } | |
2188 | ||
2189 | BFD_ASSERT (my_offset <= globals->arm_glue_size); | |
2190 | ||
2191 | tmp = bfd_get_32 (input_bfd, hit_data); | |
2192 | tmp = tmp & 0xFF000000; | |
2193 | ||
9b485d32 | 2194 | /* Somehow these are both 4 too far, so subtract 8. */ |
dc810e39 AM |
2195 | ret_offset = (s->output_offset |
2196 | + my_offset | |
2197 | + s->output_section->vma | |
2198 | - (input_section->output_offset | |
2199 | + input_section->output_section->vma | |
2200 | + offset + addend) | |
2201 | - 8); | |
9a5aca8c | 2202 | |
252b5132 RH |
2203 | tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF); |
2204 | ||
dc810e39 | 2205 | bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma); |
252b5132 | 2206 | |
b34976b6 | 2207 | return TRUE; |
252b5132 RH |
2208 | } |
2209 | ||
eb043451 PB |
2210 | |
2211 | #ifndef OLD_ARM_ABI | |
2212 | /* Some relocations map to different relocations depending on the | |
2213 | target. Return the real relocation. */ | |
2214 | static int | |
2215 | arm_real_reloc_type (struct elf32_arm_link_hash_table * globals, | |
2216 | int r_type) | |
2217 | { | |
2218 | switch (r_type) | |
2219 | { | |
2220 | case R_ARM_TARGET1: | |
2221 | if (globals->target1_is_rel) | |
2222 | return R_ARM_REL32; | |
2223 | else | |
2224 | return R_ARM_ABS32; | |
2225 | ||
2226 | case R_ARM_TARGET2: | |
2227 | return globals->target2_reloc; | |
2228 | ||
2229 | default: | |
2230 | return r_type; | |
2231 | } | |
2232 | } | |
2233 | #endif /* OLD_ARM_ABI */ | |
2234 | ||
2235 | ||
252b5132 | 2236 | /* Perform a relocation as part of a final link. */ |
9b485d32 | 2237 | |
252b5132 | 2238 | static bfd_reloc_status_type |
57e8b36a NC |
2239 | elf32_arm_final_link_relocate (reloc_howto_type * howto, |
2240 | bfd * input_bfd, | |
2241 | bfd * output_bfd, | |
2242 | asection * input_section, | |
2243 | bfd_byte * contents, | |
2244 | Elf_Internal_Rela * rel, | |
2245 | bfd_vma value, | |
2246 | struct bfd_link_info * info, | |
2247 | asection * sym_sec, | |
2248 | const char * sym_name, | |
2249 | int sym_flags, | |
2250 | struct elf_link_hash_entry * h) | |
252b5132 RH |
2251 | { |
2252 | unsigned long r_type = howto->type; | |
2253 | unsigned long r_symndx; | |
2254 | bfd_byte * hit_data = contents + rel->r_offset; | |
2255 | bfd * dynobj = NULL; | |
2256 | Elf_Internal_Shdr * symtab_hdr; | |
2257 | struct elf_link_hash_entry ** sym_hashes; | |
2258 | bfd_vma * local_got_offsets; | |
2259 | asection * sgot = NULL; | |
2260 | asection * splt = NULL; | |
2261 | asection * sreloc = NULL; | |
252b5132 | 2262 | bfd_vma addend; |
ba96a88f NC |
2263 | bfd_signed_vma signed_addend; |
2264 | struct elf32_arm_link_hash_table * globals; | |
f21f3fe0 | 2265 | |
9c504268 PB |
2266 | globals = elf32_arm_hash_table (info); |
2267 | ||
2268 | #ifndef OLD_ARM_ABI | |
2269 | /* Some relocation type map to different relocations depending on the | |
2270 | target. We pick the right one here. */ | |
eb043451 PB |
2271 | r_type = arm_real_reloc_type (globals, r_type); |
2272 | if (r_type != howto->type) | |
2273 | howto = elf32_arm_howto_from_type (r_type); | |
9c504268 PB |
2274 | #endif /* OLD_ARM_ABI */ |
2275 | ||
cac15327 NC |
2276 | /* If the start address has been set, then set the EF_ARM_HASENTRY |
2277 | flag. Setting this more than once is redundant, but the cost is | |
2278 | not too high, and it keeps the code simple. | |
99e4ae17 | 2279 | |
cac15327 NC |
2280 | The test is done here, rather than somewhere else, because the |
2281 | start address is only set just before the final link commences. | |
2282 | ||
2283 | Note - if the user deliberately sets a start address of 0, the | |
2284 | flag will not be set. */ | |
2285 | if (bfd_get_start_address (output_bfd) != 0) | |
2286 | elf_elfheader (output_bfd)->e_flags |= EF_ARM_HASENTRY; | |
99e4ae17 | 2287 | |
252b5132 RH |
2288 | dynobj = elf_hash_table (info)->dynobj; |
2289 | if (dynobj) | |
2290 | { | |
2291 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
2292 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
2293 | } | |
2294 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; | |
2295 | sym_hashes = elf_sym_hashes (input_bfd); | |
2296 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
2297 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2298 | ||
acf8aed4 | 2299 | #if USE_REL |
ba96a88f NC |
2300 | addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask; |
2301 | ||
2302 | if (addend & ((howto->src_mask + 1) >> 1)) | |
2303 | { | |
2304 | signed_addend = -1; | |
2305 | signed_addend &= ~ howto->src_mask; | |
2306 | signed_addend |= addend; | |
2307 | } | |
2308 | else | |
2309 | signed_addend = addend; | |
252b5132 | 2310 | #else |
ba96a88f | 2311 | addend = signed_addend = rel->r_addend; |
252b5132 | 2312 | #endif |
f21f3fe0 | 2313 | |
252b5132 RH |
2314 | switch (r_type) |
2315 | { | |
2316 | case R_ARM_NONE: | |
2317 | return bfd_reloc_ok; | |
2318 | ||
2319 | case R_ARM_PC24: | |
2320 | case R_ARM_ABS32: | |
2321 | case R_ARM_REL32: | |
dfc5f959 | 2322 | #ifndef OLD_ARM_ABI |
5b5bb741 PB |
2323 | case R_ARM_CALL: |
2324 | case R_ARM_JUMP24: | |
dfc5f959 | 2325 | case R_ARM_XPC25: |
eb043451 | 2326 | case R_ARM_PREL31: |
dfc5f959 | 2327 | #endif |
7359ea65 | 2328 | case R_ARM_PLT32: |
5e681ec4 PB |
2329 | /* r_symndx will be zero only for relocs against symbols |
2330 | from removed linkonce sections, or sections discarded by | |
2331 | a linker script. */ | |
2332 | if (r_symndx == 0) | |
2333 | return bfd_reloc_ok; | |
2334 | ||
7359ea65 DJ |
2335 | /* Handle relocations which should use the PLT entry. ABS32/REL32 |
2336 | will use the symbol's value, which may point to a PLT entry, but we | |
2337 | don't need to handle that here. If we created a PLT entry, all | |
2338 | branches in this object should go to it. */ | |
ee06dc07 | 2339 | if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32) |
7359ea65 | 2340 | && h != NULL |
c84cd8ee | 2341 | && splt != NULL |
7359ea65 DJ |
2342 | && h->plt.offset != (bfd_vma) -1) |
2343 | { | |
c84cd8ee DJ |
2344 | /* If we've created a .plt section, and assigned a PLT entry to |
2345 | this function, it should not be known to bind locally. If | |
2346 | it were, we would have cleared the PLT entry. */ | |
7359ea65 DJ |
2347 | BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info, h)); |
2348 | ||
2349 | value = (splt->output_section->vma | |
2350 | + splt->output_offset | |
2351 | + h->plt.offset); | |
2352 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
2353 | contents, rel->r_offset, value, | |
2354 | (bfd_vma) 0); | |
2355 | } | |
2356 | ||
252b5132 | 2357 | /* When generating a shared object, these relocations are copied |
9b485d32 | 2358 | into the output file to be resolved at run time. */ |
7359ea65 DJ |
2359 | if (info->shared |
2360 | && (input_section->flags & SEC_ALLOC) | |
ee06dc07 PB |
2361 | && (r_type != R_ARM_REL32 |
2362 | || !SYMBOL_CALLS_LOCAL (info, h)) | |
7359ea65 DJ |
2363 | && (h == NULL |
2364 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2365 | || h->root.type != bfd_link_hash_undefweak) | |
2366 | && r_type != R_ARM_PC24 | |
5b5bb741 PB |
2367 | #ifndef OLD_ARM_ABI |
2368 | && r_type != R_ARM_CALL | |
2369 | && r_type != R_ARM_JUMP24 | |
ee06dc07 | 2370 | && r_type != R_ARM_PREL31 |
5b5bb741 | 2371 | #endif |
7359ea65 | 2372 | && r_type != R_ARM_PLT32) |
252b5132 | 2373 | { |
947216bf AM |
2374 | Elf_Internal_Rela outrel; |
2375 | bfd_byte *loc; | |
b34976b6 | 2376 | bfd_boolean skip, relocate; |
f21f3fe0 | 2377 | |
252b5132 RH |
2378 | if (sreloc == NULL) |
2379 | { | |
2380 | const char * name; | |
f21f3fe0 | 2381 | |
252b5132 RH |
2382 | name = (bfd_elf_string_from_elf_section |
2383 | (input_bfd, | |
2384 | elf_elfheader (input_bfd)->e_shstrndx, | |
2385 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
2386 | if (name == NULL) | |
2387 | return bfd_reloc_notsupported; | |
f21f3fe0 | 2388 | |
252b5132 RH |
2389 | BFD_ASSERT (strncmp (name, ".rel", 4) == 0 |
2390 | && strcmp (bfd_get_section_name (input_bfd, | |
2391 | input_section), | |
2392 | name + 4) == 0); | |
f21f3fe0 | 2393 | |
252b5132 RH |
2394 | sreloc = bfd_get_section_by_name (dynobj, name); |
2395 | BFD_ASSERT (sreloc != NULL); | |
2396 | } | |
f21f3fe0 | 2397 | |
b34976b6 AM |
2398 | skip = FALSE; |
2399 | relocate = FALSE; | |
f21f3fe0 | 2400 | |
c629eae0 JJ |
2401 | outrel.r_offset = |
2402 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
2403 | rel->r_offset); | |
2404 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 2405 | skip = TRUE; |
0bb2d96a | 2406 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 2407 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
2408 | outrel.r_offset += (input_section->output_section->vma |
2409 | + input_section->output_offset); | |
f21f3fe0 | 2410 | |
252b5132 | 2411 | if (skip) |
0bb2d96a | 2412 | memset (&outrel, 0, sizeof outrel); |
5e681ec4 PB |
2413 | else if (h != NULL |
2414 | && h->dynindx != -1 | |
7359ea65 | 2415 | && (!info->shared |
5e681ec4 | 2416 | || !info->symbolic |
f5385ebf | 2417 | || !h->def_regular)) |
5e681ec4 | 2418 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
252b5132 RH |
2419 | else |
2420 | { | |
a16385dc MM |
2421 | int symbol; |
2422 | ||
5e681ec4 PB |
2423 | /* This symbol is local, or marked to become local. */ |
2424 | relocate = TRUE; | |
b7693d02 DJ |
2425 | if (sym_flags == STT_ARM_TFUNC) |
2426 | value |= 1; | |
a16385dc | 2427 | if (globals->symbian_p) |
6366ff1e MM |
2428 | { |
2429 | /* On Symbian OS, the data segment and text segement | |
2430 | can be relocated independently. Therefore, we | |
2431 | must indicate the segment to which this | |
2432 | relocation is relative. The BPABI allows us to | |
2433 | use any symbol in the right segment; we just use | |
2434 | the section symbol as it is convenient. (We | |
2435 | cannot use the symbol given by "h" directly as it | |
2436 | will not appear in the dynamic symbol table.) */ | |
2437 | symbol = elf_section_data (sym_sec->output_section)->dynindx; | |
2438 | BFD_ASSERT (symbol != 0); | |
2439 | } | |
a16385dc MM |
2440 | else |
2441 | /* On SVR4-ish systems, the dynamic loader cannot | |
2442 | relocate the text and data segments independently, | |
2443 | so the symbol does not matter. */ | |
2444 | symbol = 0; | |
2445 | outrel.r_info = ELF32_R_INFO (symbol, R_ARM_RELATIVE); | |
252b5132 | 2446 | } |
f21f3fe0 | 2447 | |
947216bf AM |
2448 | loc = sreloc->contents; |
2449 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
2450 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); | |
9a5aca8c | 2451 | |
f21f3fe0 | 2452 | /* If this reloc is against an external symbol, we do not want to |
252b5132 | 2453 | fiddle with the addend. Otherwise, we need to include the symbol |
9b485d32 | 2454 | value so that it becomes an addend for the dynamic reloc. */ |
252b5132 RH |
2455 | if (! relocate) |
2456 | return bfd_reloc_ok; | |
9a5aca8c | 2457 | |
f21f3fe0 | 2458 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
252b5132 RH |
2459 | contents, rel->r_offset, value, |
2460 | (bfd_vma) 0); | |
2461 | } | |
2462 | else switch (r_type) | |
2463 | { | |
dfc5f959 NC |
2464 | #ifndef OLD_ARM_ABI |
2465 | case R_ARM_XPC25: /* Arm BLX instruction. */ | |
5b5bb741 PB |
2466 | case R_ARM_CALL: |
2467 | case R_ARM_JUMP24: | |
dfc5f959 NC |
2468 | #endif |
2469 | case R_ARM_PC24: /* Arm B/BL instruction */ | |
7359ea65 | 2470 | case R_ARM_PLT32: |
dfc5f959 NC |
2471 | #ifndef OLD_ARM_ABI |
2472 | if (r_type == R_ARM_XPC25) | |
252b5132 | 2473 | { |
dfc5f959 NC |
2474 | /* Check for Arm calling Arm function. */ |
2475 | /* FIXME: Should we translate the instruction into a BL | |
2476 | instruction instead ? */ | |
2477 | if (sym_flags != STT_ARM_TFUNC) | |
d003868e AM |
2478 | (*_bfd_error_handler) |
2479 | (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."), | |
2480 | input_bfd, | |
2481 | h ? h->root.root.string : "(local)"); | |
dfc5f959 NC |
2482 | } |
2483 | else | |
2484 | #endif | |
2485 | { | |
2486 | /* Check for Arm calling Thumb function. */ | |
2487 | if (sym_flags == STT_ARM_TFUNC) | |
2488 | { | |
57e8b36a NC |
2489 | elf32_arm_to_thumb_stub (info, sym_name, input_bfd, |
2490 | output_bfd, input_section, | |
2491 | hit_data, sym_sec, rel->r_offset, | |
dfc5f959 NC |
2492 | signed_addend, value); |
2493 | return bfd_reloc_ok; | |
2494 | } | |
252b5132 | 2495 | } |
ba96a88f NC |
2496 | |
2497 | if ( strcmp (bfd_get_target (input_bfd), "elf32-littlearm-oabi") == 0 | |
2498 | || strcmp (bfd_get_target (input_bfd), "elf32-bigarm-oabi") == 0) | |
2499 | { | |
2500 | /* The old way of doing things. Trearing the addend as a | |
2501 | byte sized field and adding in the pipeline offset. */ | |
ba96a88f NC |
2502 | value -= (input_section->output_section->vma |
2503 | + input_section->output_offset); | |
2504 | value -= rel->r_offset; | |
2505 | value += addend; | |
f21f3fe0 | 2506 | |
ba96a88f NC |
2507 | if (! globals->no_pipeline_knowledge) |
2508 | value -= 8; | |
2509 | } | |
2510 | else | |
2511 | { | |
2512 | /* The ARM ELF ABI says that this reloc is computed as: S - P + A | |
2513 | where: | |
2514 | S is the address of the symbol in the relocation. | |
2515 | P is address of the instruction being relocated. | |
2516 | A is the addend (extracted from the instruction) in bytes. | |
f21f3fe0 | 2517 | |
ba96a88f | 2518 | S is held in 'value'. |
57e8b36a NC |
2519 | P is the base address of the section containing the |
2520 | instruction plus the offset of the reloc into that | |
2521 | section, ie: | |
ba96a88f NC |
2522 | (input_section->output_section->vma + |
2523 | input_section->output_offset + | |
2524 | rel->r_offset). | |
2525 | A is the addend, converted into bytes, ie: | |
2526 | (signed_addend * 4) | |
2527 | ||
2528 | Note: None of these operations have knowledge of the pipeline | |
57e8b36a NC |
2529 | size of the processor, thus it is up to the assembler to |
2530 | encode this information into the addend. */ | |
ba96a88f NC |
2531 | value -= (input_section->output_section->vma |
2532 | + input_section->output_offset); | |
2533 | value -= rel->r_offset; | |
2534 | value += (signed_addend << howto->size); | |
f21f3fe0 | 2535 | |
57e8b36a NC |
2536 | /* Previous versions of this code also used to add in the |
2537 | pipeline offset here. This is wrong because the linker is | |
2538 | not supposed to know about such things, and one day it might | |
2539 | change. In order to support old binaries that need the old | |
2540 | behaviour however, so we attempt to detect which ABI was | |
2541 | used to create the reloc. */ | |
ba96a88f | 2542 | if (! globals->no_pipeline_knowledge) |
f21f3fe0 | 2543 | { |
ba96a88f | 2544 | Elf_Internal_Ehdr * i_ehdrp; /* Elf file header, internal form */ |
f21f3fe0 | 2545 | |
ba96a88f | 2546 | i_ehdrp = elf_elfheader (input_bfd); |
f21f3fe0 | 2547 | |
ba96a88f NC |
2548 | if (i_ehdrp->e_ident[EI_OSABI] == 0) |
2549 | value -= 8; | |
2550 | } | |
2551 | } | |
23080146 | 2552 | |
dcb5e6e6 NC |
2553 | signed_addend = value; |
2554 | signed_addend >>= howto->rightshift; | |
9a5aca8c | 2555 | |
59f2c4e7 NC |
2556 | /* It is not an error for an undefined weak reference to be |
2557 | out of range. Any program that branches to such a symbol | |
9a5aca8c AM |
2558 | is going to crash anyway, so there is no point worrying |
2559 | about getting the destination exactly right. */ | |
59f2c4e7 NC |
2560 | if (! h || h->root.type != bfd_link_hash_undefweak) |
2561 | { | |
9b485d32 | 2562 | /* Perform a signed range check. */ |
dcb5e6e6 | 2563 | if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1)) |
59f2c4e7 NC |
2564 | || signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1))) |
2565 | return bfd_reloc_overflow; | |
2566 | } | |
9a5aca8c | 2567 | |
dcb5e6e6 NC |
2568 | #ifndef OLD_ARM_ABI |
2569 | /* If necessary set the H bit in the BLX instruction. */ | |
2570 | if (r_type == R_ARM_XPC25 && ((value & 2) == 2)) | |
2571 | value = (signed_addend & howto->dst_mask) | |
2572 | | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask)) | |
2573 | | (1 << 24); | |
2574 | else | |
2575 | #endif | |
2576 | value = (signed_addend & howto->dst_mask) | |
2577 | | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask)); | |
252b5132 | 2578 | break; |
f21f3fe0 | 2579 | |
252b5132 RH |
2580 | case R_ARM_ABS32: |
2581 | value += addend; | |
2582 | if (sym_flags == STT_ARM_TFUNC) | |
2583 | value |= 1; | |
2584 | break; | |
f21f3fe0 | 2585 | |
252b5132 RH |
2586 | case R_ARM_REL32: |
2587 | value -= (input_section->output_section->vma | |
62efb346 | 2588 | + input_section->output_offset + rel->r_offset); |
252b5132 RH |
2589 | value += addend; |
2590 | break; | |
eb043451 PB |
2591 | |
2592 | #ifndef OLD_ARM_ABI | |
2593 | case R_ARM_PREL31: | |
2594 | value -= (input_section->output_section->vma | |
2595 | + input_section->output_offset + rel->r_offset); | |
2596 | value += signed_addend; | |
2597 | if (! h || h->root.type != bfd_link_hash_undefweak) | |
2598 | { | |
2599 | /* Check for overflow */ | |
2600 | if ((value ^ (value >> 1)) & (1 << 30)) | |
2601 | return bfd_reloc_overflow; | |
2602 | } | |
2603 | value &= 0x7fffffff; | |
2604 | value |= (bfd_get_32 (input_bfd, hit_data) & 0x80000000); | |
2605 | if (sym_flags == STT_ARM_TFUNC) | |
2606 | value |= 1; | |
2607 | break; | |
2608 | #endif | |
252b5132 | 2609 | } |
f21f3fe0 | 2610 | |
252b5132 RH |
2611 | bfd_put_32 (input_bfd, value, hit_data); |
2612 | return bfd_reloc_ok; | |
2613 | ||
2614 | case R_ARM_ABS8: | |
2615 | value += addend; | |
2616 | if ((long) value > 0x7f || (long) value < -0x80) | |
2617 | return bfd_reloc_overflow; | |
2618 | ||
2619 | bfd_put_8 (input_bfd, value, hit_data); | |
2620 | return bfd_reloc_ok; | |
2621 | ||
2622 | case R_ARM_ABS16: | |
2623 | value += addend; | |
2624 | ||
2625 | if ((long) value > 0x7fff || (long) value < -0x8000) | |
2626 | return bfd_reloc_overflow; | |
2627 | ||
2628 | bfd_put_16 (input_bfd, value, hit_data); | |
2629 | return bfd_reloc_ok; | |
2630 | ||
2631 | case R_ARM_ABS12: | |
2632 | /* Support ldr and str instruction for the arm */ | |
2633 | /* Also thumb b (unconditional branch). ??? Really? */ | |
2634 | value += addend; | |
2635 | ||
2636 | if ((long) value > 0x7ff || (long) value < -0x800) | |
2637 | return bfd_reloc_overflow; | |
2638 | ||
2639 | value |= (bfd_get_32 (input_bfd, hit_data) & 0xfffff000); | |
2640 | bfd_put_32 (input_bfd, value, hit_data); | |
2641 | return bfd_reloc_ok; | |
2642 | ||
2643 | case R_ARM_THM_ABS5: | |
9b485d32 | 2644 | /* Support ldr and str instructions for the thumb. */ |
acf8aed4 | 2645 | #if USE_REL |
252b5132 RH |
2646 | /* Need to refetch addend. */ |
2647 | addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask; | |
2648 | /* ??? Need to determine shift amount from operand size. */ | |
2649 | addend >>= howto->rightshift; | |
2650 | #endif | |
2651 | value += addend; | |
2652 | ||
2653 | /* ??? Isn't value unsigned? */ | |
2654 | if ((long) value > 0x1f || (long) value < -0x10) | |
2655 | return bfd_reloc_overflow; | |
2656 | ||
2657 | /* ??? Value needs to be properly shifted into place first. */ | |
2658 | value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f; | |
2659 | bfd_put_16 (input_bfd, value, hit_data); | |
2660 | return bfd_reloc_ok; | |
2661 | ||
dfc5f959 NC |
2662 | #ifndef OLD_ARM_ABI |
2663 | case R_ARM_THM_XPC22: | |
2664 | #endif | |
252b5132 | 2665 | case R_ARM_THM_PC22: |
dfc5f959 | 2666 | /* Thumb BL (branch long instruction). */ |
252b5132 | 2667 | { |
b34976b6 AM |
2668 | bfd_vma relocation; |
2669 | bfd_boolean overflow = FALSE; | |
2670 | bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); | |
2671 | bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); | |
df212a7e | 2672 | bfd_signed_vma reloc_signed_max = ((1 << (howto->bitsize - 1)) - 1) >> howto->rightshift; |
ba96a88f | 2673 | bfd_signed_vma reloc_signed_min = ~ reloc_signed_max; |
b34976b6 | 2674 | bfd_vma check; |
252b5132 | 2675 | bfd_signed_vma signed_check; |
252b5132 | 2676 | |
acf8aed4 | 2677 | #if USE_REL |
252b5132 RH |
2678 | /* Need to refetch the addend and squish the two 11 bit pieces |
2679 | together. */ | |
2680 | { | |
ba96a88f NC |
2681 | bfd_vma upper = upper_insn & 0x7ff; |
2682 | bfd_vma lower = lower_insn & 0x7ff; | |
9b485d32 | 2683 | upper = (upper ^ 0x400) - 0x400; /* Sign extend. */ |
252b5132 | 2684 | addend = (upper << 12) | (lower << 1); |
ba96a88f | 2685 | signed_addend = addend; |
252b5132 RH |
2686 | } |
2687 | #endif | |
dfc5f959 NC |
2688 | #ifndef OLD_ARM_ABI |
2689 | if (r_type == R_ARM_THM_XPC22) | |
2690 | { | |
2691 | /* Check for Thumb to Thumb call. */ | |
2692 | /* FIXME: Should we translate the instruction into a BL | |
2693 | instruction instead ? */ | |
2694 | if (sym_flags == STT_ARM_TFUNC) | |
d003868e AM |
2695 | (*_bfd_error_handler) |
2696 | (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."), | |
2697 | input_bfd, | |
2698 | h ? h->root.root.string : "(local)"); | |
dfc5f959 NC |
2699 | } |
2700 | else | |
2701 | #endif | |
252b5132 | 2702 | { |
dfc5f959 NC |
2703 | /* If it is not a call to Thumb, assume call to Arm. |
2704 | If it is a call relative to a section name, then it is not a | |
b7693d02 DJ |
2705 | function call at all, but rather a long jump. Calls through |
2706 | the PLT do not require stubs. */ | |
2707 | if (sym_flags != STT_ARM_TFUNC && sym_flags != STT_SECTION | |
2708 | && (h == NULL || splt == NULL | |
2709 | || h->plt.offset == (bfd_vma) -1)) | |
dfc5f959 NC |
2710 | { |
2711 | if (elf32_thumb_to_arm_stub | |
2712 | (info, sym_name, input_bfd, output_bfd, input_section, | |
2713 | hit_data, sym_sec, rel->r_offset, signed_addend, value)) | |
2714 | return bfd_reloc_ok; | |
2715 | else | |
2716 | return bfd_reloc_dangerous; | |
2717 | } | |
252b5132 | 2718 | } |
f21f3fe0 | 2719 | |
b7693d02 DJ |
2720 | /* Handle calls via the PLT. */ |
2721 | if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1) | |
2722 | { | |
2723 | value = (splt->output_section->vma | |
2724 | + splt->output_offset | |
2725 | + h->plt.offset); | |
2726 | /* Target the Thumb stub before the ARM PLT entry. */ | |
2727 | value -= 4; | |
2728 | } | |
2729 | ||
ba96a88f | 2730 | relocation = value + signed_addend; |
f21f3fe0 | 2731 | |
252b5132 | 2732 | relocation -= (input_section->output_section->vma |
ba96a88f NC |
2733 | + input_section->output_offset |
2734 | + rel->r_offset); | |
9a5aca8c | 2735 | |
ba96a88f NC |
2736 | if (! globals->no_pipeline_knowledge) |
2737 | { | |
9b485d32 | 2738 | Elf_Internal_Ehdr * i_ehdrp; /* Elf file header, internal form. */ |
9a5aca8c | 2739 | |
ba96a88f | 2740 | i_ehdrp = elf_elfheader (input_bfd); |
f21f3fe0 | 2741 | |
ba96a88f NC |
2742 | /* Previous versions of this code also used to add in the pipline |
2743 | offset here. This is wrong because the linker is not supposed | |
2744 | to know about such things, and one day it might change. In order | |
2745 | to support old binaries that need the old behaviour however, so | |
2746 | we attempt to detect which ABI was used to create the reloc. */ | |
2747 | if ( strcmp (bfd_get_target (input_bfd), "elf32-littlearm-oabi") == 0 | |
2748 | || strcmp (bfd_get_target (input_bfd), "elf32-bigarm-oabi") == 0 | |
2749 | || i_ehdrp->e_ident[EI_OSABI] == 0) | |
2750 | relocation += 4; | |
2751 | } | |
f21f3fe0 | 2752 | |
252b5132 RH |
2753 | check = relocation >> howto->rightshift; |
2754 | ||
2755 | /* If this is a signed value, the rightshift just dropped | |
2756 | leading 1 bits (assuming twos complement). */ | |
2757 | if ((bfd_signed_vma) relocation >= 0) | |
2758 | signed_check = check; | |
2759 | else | |
2760 | signed_check = check | ~((bfd_vma) -1 >> howto->rightshift); | |
2761 | ||
252b5132 | 2762 | /* Assumes two's complement. */ |
ba96a88f | 2763 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) |
b34976b6 | 2764 | overflow = TRUE; |
252b5132 | 2765 | |
df425bc0 | 2766 | #ifndef OLD_ARM_ABI |
4f3c3dbb NC |
2767 | if (r_type == R_ARM_THM_XPC22 |
2768 | && ((lower_insn & 0x1800) == 0x0800)) | |
c62e1cc3 NC |
2769 | /* For a BLX instruction, make sure that the relocation is rounded up |
2770 | to a word boundary. This follows the semantics of the instruction | |
2771 | which specifies that bit 1 of the target address will come from bit | |
2772 | 1 of the base address. */ | |
2773 | relocation = (relocation + 2) & ~ 3; | |
99e4ae17 | 2774 | #endif |
c62e1cc3 NC |
2775 | /* Put RELOCATION back into the insn. */ |
2776 | upper_insn = (upper_insn & ~(bfd_vma) 0x7ff) | ((relocation >> 12) & 0x7ff); | |
2777 | lower_insn = (lower_insn & ~(bfd_vma) 0x7ff) | ((relocation >> 1) & 0x7ff); | |
2778 | ||
252b5132 RH |
2779 | /* Put the relocated value back in the object file: */ |
2780 | bfd_put_16 (input_bfd, upper_insn, hit_data); | |
2781 | bfd_put_16 (input_bfd, lower_insn, hit_data + 2); | |
2782 | ||
2783 | return (overflow ? bfd_reloc_overflow : bfd_reloc_ok); | |
2784 | } | |
2785 | break; | |
2786 | ||
51c5503b NC |
2787 | case R_ARM_THM_PC11: |
2788 | /* Thumb B (branch) instruction). */ | |
2789 | { | |
6cf9e9fe | 2790 | bfd_signed_vma relocation; |
51c5503b NC |
2791 | bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1; |
2792 | bfd_signed_vma reloc_signed_min = ~ reloc_signed_max; | |
51c5503b NC |
2793 | bfd_signed_vma signed_check; |
2794 | ||
acf8aed4 | 2795 | #if USE_REL |
51c5503b NC |
2796 | /* Need to refetch addend. */ |
2797 | addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask; | |
6cf9e9fe NC |
2798 | if (addend & ((howto->src_mask + 1) >> 1)) |
2799 | { | |
2800 | signed_addend = -1; | |
2801 | signed_addend &= ~ howto->src_mask; | |
2802 | signed_addend |= addend; | |
2803 | } | |
2804 | else | |
2805 | signed_addend = addend; | |
2806 | /* The value in the insn has been right shifted. We need to | |
2807 | undo this, so that we can perform the address calculation | |
2808 | in terms of bytes. */ | |
2809 | signed_addend <<= howto->rightshift; | |
51c5503b | 2810 | #endif |
6cf9e9fe | 2811 | relocation = value + signed_addend; |
51c5503b NC |
2812 | |
2813 | relocation -= (input_section->output_section->vma | |
2814 | + input_section->output_offset | |
2815 | + rel->r_offset); | |
2816 | ||
6cf9e9fe NC |
2817 | relocation >>= howto->rightshift; |
2818 | signed_check = relocation; | |
2819 | relocation &= howto->dst_mask; | |
51c5503b | 2820 | relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask)); |
cedb70c5 | 2821 | |
51c5503b NC |
2822 | bfd_put_16 (input_bfd, relocation, hit_data); |
2823 | ||
2824 | /* Assumes two's complement. */ | |
2825 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) | |
2826 | return bfd_reloc_overflow; | |
2827 | ||
2828 | return bfd_reloc_ok; | |
2829 | } | |
cedb70c5 | 2830 | |
1f433d93 | 2831 | #ifndef OLD_ARM_ABI |
8375c36b PB |
2832 | case R_ARM_ALU_PCREL7_0: |
2833 | case R_ARM_ALU_PCREL15_8: | |
2834 | case R_ARM_ALU_PCREL23_15: | |
2835 | { | |
2836 | bfd_vma insn; | |
2837 | bfd_vma relocation; | |
2838 | ||
2839 | insn = bfd_get_32 (input_bfd, hit_data); | |
2840 | #if USE_REL | |
2841 | /* Extract the addend. */ | |
2842 | addend = (insn & 0xff) << ((insn & 0xf00) >> 7); | |
2843 | signed_addend = addend; | |
2844 | #endif | |
2845 | relocation = value + signed_addend; | |
2846 | ||
2847 | relocation -= (input_section->output_section->vma | |
2848 | + input_section->output_offset | |
2849 | + rel->r_offset); | |
2850 | insn = (insn & ~0xfff) | |
2851 | | ((howto->bitpos << 7) & 0xf00) | |
2852 | | ((relocation >> howto->bitpos) & 0xff); | |
2853 | bfd_put_32 (input_bfd, value, hit_data); | |
2854 | } | |
2855 | return bfd_reloc_ok; | |
1f433d93 | 2856 | #endif |
8375c36b | 2857 | |
252b5132 RH |
2858 | case R_ARM_GNU_VTINHERIT: |
2859 | case R_ARM_GNU_VTENTRY: | |
2860 | return bfd_reloc_ok; | |
2861 | ||
2862 | case R_ARM_COPY: | |
2863 | return bfd_reloc_notsupported; | |
2864 | ||
2865 | case R_ARM_GLOB_DAT: | |
2866 | return bfd_reloc_notsupported; | |
2867 | ||
2868 | case R_ARM_JUMP_SLOT: | |
2869 | return bfd_reloc_notsupported; | |
2870 | ||
2871 | case R_ARM_RELATIVE: | |
2872 | return bfd_reloc_notsupported; | |
2873 | ||
2874 | case R_ARM_GOTOFF: | |
2875 | /* Relocation is relative to the start of the | |
2876 | global offset table. */ | |
2877 | ||
2878 | BFD_ASSERT (sgot != NULL); | |
2879 | if (sgot == NULL) | |
2880 | return bfd_reloc_notsupported; | |
9a5aca8c | 2881 | |
cedb70c5 | 2882 | /* If we are addressing a Thumb function, we need to adjust the |
ee29b9fb RE |
2883 | address by one, so that attempts to call the function pointer will |
2884 | correctly interpret it as Thumb code. */ | |
2885 | if (sym_flags == STT_ARM_TFUNC) | |
2886 | value += 1; | |
2887 | ||
252b5132 RH |
2888 | /* Note that sgot->output_offset is not involved in this |
2889 | calculation. We always want the start of .got. If we | |
2890 | define _GLOBAL_OFFSET_TABLE in a different way, as is | |
2891 | permitted by the ABI, we might have to change this | |
9b485d32 | 2892 | calculation. */ |
252b5132 | 2893 | value -= sgot->output_section->vma; |
f21f3fe0 | 2894 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 AJ |
2895 | contents, rel->r_offset, value, |
2896 | (bfd_vma) 0); | |
252b5132 RH |
2897 | |
2898 | case R_ARM_GOTPC: | |
a7c10850 | 2899 | /* Use global offset table as symbol value. */ |
252b5132 | 2900 | BFD_ASSERT (sgot != NULL); |
f21f3fe0 | 2901 | |
252b5132 RH |
2902 | if (sgot == NULL) |
2903 | return bfd_reloc_notsupported; | |
2904 | ||
2905 | value = sgot->output_section->vma; | |
f21f3fe0 | 2906 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 AJ |
2907 | contents, rel->r_offset, value, |
2908 | (bfd_vma) 0); | |
f21f3fe0 | 2909 | |
252b5132 | 2910 | case R_ARM_GOT32: |
eb043451 PB |
2911 | #ifndef OLD_ARM_ABI |
2912 | case R_ARM_GOT_PREL: | |
2913 | #endif | |
252b5132 | 2914 | /* Relocation is to the entry for this symbol in the |
9b485d32 | 2915 | global offset table. */ |
252b5132 RH |
2916 | if (sgot == NULL) |
2917 | return bfd_reloc_notsupported; | |
f21f3fe0 | 2918 | |
252b5132 RH |
2919 | if (h != NULL) |
2920 | { | |
2921 | bfd_vma off; | |
5e681ec4 | 2922 | bfd_boolean dyn; |
f21f3fe0 | 2923 | |
252b5132 RH |
2924 | off = h->got.offset; |
2925 | BFD_ASSERT (off != (bfd_vma) -1); | |
5e681ec4 | 2926 | dyn = globals->root.dynamic_sections_created; |
f21f3fe0 | 2927 | |
5e681ec4 | 2928 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
50d6c878 | 2929 | || (info->shared |
5e681ec4 PB |
2930 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
2931 | || (ELF_ST_VISIBILITY (h->other) | |
2932 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
2933 | { |
2934 | /* This is actually a static link, or it is a -Bsymbolic link | |
2935 | and the symbol is defined locally. We must initialize this | |
2936 | entry in the global offset table. Since the offset must | |
2937 | always be a multiple of 4, we use the least significant bit | |
2938 | to record whether we have initialized it already. | |
f21f3fe0 | 2939 | |
252b5132 | 2940 | When doing a dynamic link, we create a .rel.got relocation |
f21f3fe0 | 2941 | entry to initialize the value. This is done in the |
9b485d32 | 2942 | finish_dynamic_symbol routine. */ |
252b5132 RH |
2943 | if ((off & 1) != 0) |
2944 | off &= ~1; | |
2945 | else | |
2946 | { | |
ee29b9fb RE |
2947 | /* If we are addressing a Thumb function, we need to |
2948 | adjust the address by one, so that attempts to | |
2949 | call the function pointer will correctly | |
2950 | interpret it as Thumb code. */ | |
2951 | if (sym_flags == STT_ARM_TFUNC) | |
2952 | value |= 1; | |
2953 | ||
252b5132 RH |
2954 | bfd_put_32 (output_bfd, value, sgot->contents + off); |
2955 | h->got.offset |= 1; | |
2956 | } | |
2957 | } | |
f21f3fe0 | 2958 | |
252b5132 RH |
2959 | value = sgot->output_offset + off; |
2960 | } | |
2961 | else | |
2962 | { | |
2963 | bfd_vma off; | |
f21f3fe0 | 2964 | |
252b5132 RH |
2965 | BFD_ASSERT (local_got_offsets != NULL && |
2966 | local_got_offsets[r_symndx] != (bfd_vma) -1); | |
f21f3fe0 | 2967 | |
252b5132 | 2968 | off = local_got_offsets[r_symndx]; |
f21f3fe0 | 2969 | |
252b5132 RH |
2970 | /* The offset must always be a multiple of 4. We use the |
2971 | least significant bit to record whether we have already | |
9b485d32 | 2972 | generated the necessary reloc. */ |
252b5132 RH |
2973 | if ((off & 1) != 0) |
2974 | off &= ~1; | |
2975 | else | |
2976 | { | |
b7693d02 DJ |
2977 | /* If we are addressing a Thumb function, we need to |
2978 | adjust the address by one, so that attempts to | |
2979 | call the function pointer will correctly | |
2980 | interpret it as Thumb code. */ | |
2981 | if (sym_flags == STT_ARM_TFUNC) | |
2982 | value |= 1; | |
2983 | ||
252b5132 | 2984 | bfd_put_32 (output_bfd, value, sgot->contents + off); |
f21f3fe0 | 2985 | |
252b5132 RH |
2986 | if (info->shared) |
2987 | { | |
2988 | asection * srelgot; | |
947216bf AM |
2989 | Elf_Internal_Rela outrel; |
2990 | bfd_byte *loc; | |
f21f3fe0 | 2991 | |
252b5132 RH |
2992 | srelgot = bfd_get_section_by_name (dynobj, ".rel.got"); |
2993 | BFD_ASSERT (srelgot != NULL); | |
f21f3fe0 | 2994 | |
252b5132 | 2995 | outrel.r_offset = (sgot->output_section->vma |
f21f3fe0 | 2996 | + sgot->output_offset |
252b5132 RH |
2997 | + off); |
2998 | outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); | |
947216bf AM |
2999 | loc = srelgot->contents; |
3000 | loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rel); | |
3001 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); | |
252b5132 | 3002 | } |
f21f3fe0 | 3003 | |
252b5132 RH |
3004 | local_got_offsets[r_symndx] |= 1; |
3005 | } | |
f21f3fe0 | 3006 | |
252b5132 RH |
3007 | value = sgot->output_offset + off; |
3008 | } | |
eb043451 PB |
3009 | if (r_type != R_ARM_GOT32) |
3010 | value += sgot->output_section->vma; | |
9a5aca8c | 3011 | |
f21f3fe0 | 3012 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 AJ |
3013 | contents, rel->r_offset, value, |
3014 | (bfd_vma) 0); | |
f21f3fe0 | 3015 | |
252b5132 RH |
3016 | case R_ARM_SBREL32: |
3017 | return bfd_reloc_notsupported; | |
3018 | ||
3019 | case R_ARM_AMP_VCALL9: | |
3020 | return bfd_reloc_notsupported; | |
3021 | ||
3022 | case R_ARM_RSBREL32: | |
3023 | return bfd_reloc_notsupported; | |
3024 | ||
3025 | case R_ARM_THM_RPC22: | |
3026 | return bfd_reloc_notsupported; | |
3027 | ||
3028 | case R_ARM_RREL32: | |
3029 | return bfd_reloc_notsupported; | |
3030 | ||
3031 | case R_ARM_RABS32: | |
3032 | return bfd_reloc_notsupported; | |
3033 | ||
3034 | case R_ARM_RPC24: | |
3035 | return bfd_reloc_notsupported; | |
3036 | ||
3037 | case R_ARM_RBASE: | |
3038 | return bfd_reloc_notsupported; | |
3039 | ||
3040 | default: | |
3041 | return bfd_reloc_notsupported; | |
3042 | } | |
3043 | } | |
3044 | ||
acf8aed4 | 3045 | #if USE_REL |
98c1d4aa NC |
3046 | /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */ |
3047 | static void | |
57e8b36a NC |
3048 | arm_add_to_rel (bfd * abfd, |
3049 | bfd_byte * address, | |
3050 | reloc_howto_type * howto, | |
3051 | bfd_signed_vma increment) | |
98c1d4aa | 3052 | { |
98c1d4aa NC |
3053 | bfd_signed_vma addend; |
3054 | ||
9a5aca8c | 3055 | if (howto->type == R_ARM_THM_PC22) |
98c1d4aa | 3056 | { |
9a5aca8c AM |
3057 | int upper_insn, lower_insn; |
3058 | int upper, lower; | |
98c1d4aa | 3059 | |
9a5aca8c AM |
3060 | upper_insn = bfd_get_16 (abfd, address); |
3061 | lower_insn = bfd_get_16 (abfd, address + 2); | |
3062 | upper = upper_insn & 0x7ff; | |
3063 | lower = lower_insn & 0x7ff; | |
3064 | ||
3065 | addend = (upper << 12) | (lower << 1); | |
ddda4409 | 3066 | addend += increment; |
9a5aca8c | 3067 | addend >>= 1; |
98c1d4aa | 3068 | |
9a5aca8c AM |
3069 | upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff); |
3070 | lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff); | |
3071 | ||
dc810e39 AM |
3072 | bfd_put_16 (abfd, (bfd_vma) upper_insn, address); |
3073 | bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2); | |
9a5aca8c AM |
3074 | } |
3075 | else | |
3076 | { | |
3077 | bfd_vma contents; | |
3078 | ||
3079 | contents = bfd_get_32 (abfd, address); | |
3080 | ||
3081 | /* Get the (signed) value from the instruction. */ | |
3082 | addend = contents & howto->src_mask; | |
3083 | if (addend & ((howto->src_mask + 1) >> 1)) | |
3084 | { | |
3085 | bfd_signed_vma mask; | |
3086 | ||
3087 | mask = -1; | |
3088 | mask &= ~ howto->src_mask; | |
3089 | addend |= mask; | |
3090 | } | |
3091 | ||
3092 | /* Add in the increment, (which is a byte value). */ | |
3093 | switch (howto->type) | |
3094 | { | |
3095 | default: | |
3096 | addend += increment; | |
3097 | break; | |
3098 | ||
3099 | case R_ARM_PC24: | |
5b5bb741 PB |
3100 | #ifndef OLD_ARM_ABI |
3101 | case R_ARM_CALL: | |
3102 | case R_ARM_JUMP24: | |
3103 | #endif | |
9a5aca8c | 3104 | addend <<= howto->size; |
dc810e39 | 3105 | addend += increment; |
9a5aca8c AM |
3106 | |
3107 | /* Should we check for overflow here ? */ | |
3108 | ||
3109 | /* Drop any undesired bits. */ | |
3110 | addend >>= howto->rightshift; | |
3111 | break; | |
3112 | } | |
3113 | ||
3114 | contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask); | |
3115 | ||
3116 | bfd_put_32 (abfd, contents, address); | |
ddda4409 | 3117 | } |
98c1d4aa NC |
3118 | } |
3119 | #endif /* USE_REL */ | |
252b5132 RH |
3120 | |
3121 | /* Relocate an ARM ELF section. */ | |
b34976b6 | 3122 | static bfd_boolean |
57e8b36a NC |
3123 | elf32_arm_relocate_section (bfd * output_bfd, |
3124 | struct bfd_link_info * info, | |
3125 | bfd * input_bfd, | |
3126 | asection * input_section, | |
3127 | bfd_byte * contents, | |
3128 | Elf_Internal_Rela * relocs, | |
3129 | Elf_Internal_Sym * local_syms, | |
3130 | asection ** local_sections) | |
252b5132 | 3131 | { |
b34976b6 AM |
3132 | Elf_Internal_Shdr *symtab_hdr; |
3133 | struct elf_link_hash_entry **sym_hashes; | |
3134 | Elf_Internal_Rela *rel; | |
3135 | Elf_Internal_Rela *relend; | |
3136 | const char *name; | |
b32d3aa2 | 3137 | struct elf32_arm_link_hash_table * globals; |
252b5132 | 3138 | |
acf8aed4 | 3139 | #if !USE_REL |
1049f94e | 3140 | if (info->relocatable) |
b34976b6 | 3141 | return TRUE; |
b491616a AM |
3142 | #endif |
3143 | ||
b32d3aa2 | 3144 | globals = elf32_arm_hash_table (info); |
252b5132 RH |
3145 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; |
3146 | sym_hashes = elf_sym_hashes (input_bfd); | |
3147 | ||
3148 | rel = relocs; | |
3149 | relend = relocs + input_section->reloc_count; | |
3150 | for (; rel < relend; rel++) | |
3151 | { | |
ba96a88f NC |
3152 | int r_type; |
3153 | reloc_howto_type * howto; | |
3154 | unsigned long r_symndx; | |
3155 | Elf_Internal_Sym * sym; | |
3156 | asection * sec; | |
252b5132 | 3157 | struct elf_link_hash_entry * h; |
ba96a88f NC |
3158 | bfd_vma relocation; |
3159 | bfd_reloc_status_type r; | |
3160 | arelent bfd_reloc; | |
f21f3fe0 | 3161 | |
252b5132 | 3162 | r_symndx = ELF32_R_SYM (rel->r_info); |
ba96a88f | 3163 | r_type = ELF32_R_TYPE (rel->r_info); |
b32d3aa2 | 3164 | r_type = arm_real_reloc_type (globals, r_type); |
252b5132 | 3165 | |
ba96a88f NC |
3166 | if ( r_type == R_ARM_GNU_VTENTRY |
3167 | || r_type == R_ARM_GNU_VTINHERIT) | |
252b5132 RH |
3168 | continue; |
3169 | ||
b32d3aa2 | 3170 | bfd_reloc.howto = elf32_arm_howto_from_type (r_type); |
ba96a88f | 3171 | howto = bfd_reloc.howto; |
252b5132 | 3172 | |
acf8aed4 | 3173 | #if USE_REL |
1049f94e | 3174 | if (info->relocatable) |
252b5132 | 3175 | { |
1049f94e | 3176 | /* This is a relocatable link. We don't have to change |
252b5132 RH |
3177 | anything, unless the reloc is against a section symbol, |
3178 | in which case we have to adjust according to where the | |
3179 | section symbol winds up in the output section. */ | |
3180 | if (r_symndx < symtab_hdr->sh_info) | |
3181 | { | |
3182 | sym = local_syms + r_symndx; | |
3183 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
3184 | { | |
3185 | sec = local_sections[r_symndx]; | |
98c1d4aa | 3186 | arm_add_to_rel (input_bfd, contents + rel->r_offset, |
dc810e39 AM |
3187 | howto, |
3188 | (bfd_signed_vma) (sec->output_offset | |
3189 | + sym->st_value)); | |
252b5132 RH |
3190 | } |
3191 | } | |
3192 | ||
3193 | continue; | |
3194 | } | |
b491616a | 3195 | #endif |
252b5132 RH |
3196 | |
3197 | /* This is a final link. */ | |
3198 | h = NULL; | |
3199 | sym = NULL; | |
3200 | sec = NULL; | |
9b485d32 | 3201 | |
252b5132 RH |
3202 | if (r_symndx < symtab_hdr->sh_info) |
3203 | { | |
3204 | sym = local_syms + r_symndx; | |
3205 | sec = local_sections[r_symndx]; | |
acf8aed4 | 3206 | #if USE_REL |
252b5132 RH |
3207 | relocation = (sec->output_section->vma |
3208 | + sec->output_offset | |
3209 | + sym->st_value); | |
f8df10f4 JJ |
3210 | if ((sec->flags & SEC_MERGE) |
3211 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
3212 | { | |
3213 | asection *msec; | |
3214 | bfd_vma addend, value; | |
3215 | ||
3216 | if (howto->rightshift) | |
3217 | { | |
3218 | (*_bfd_error_handler) | |
d003868e AM |
3219 | (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"), |
3220 | input_bfd, input_section, | |
f8df10f4 | 3221 | (long) rel->r_offset, howto->name); |
b34976b6 | 3222 | return FALSE; |
f8df10f4 JJ |
3223 | } |
3224 | ||
3225 | value = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
3226 | ||
3227 | /* Get the (signed) value from the instruction. */ | |
3228 | addend = value & howto->src_mask; | |
3229 | if (addend & ((howto->src_mask + 1) >> 1)) | |
3230 | { | |
3231 | bfd_signed_vma mask; | |
3232 | ||
3233 | mask = -1; | |
3234 | mask &= ~ howto->src_mask; | |
3235 | addend |= mask; | |
3236 | } | |
3237 | msec = sec; | |
3238 | addend = | |
c629eae0 | 3239 | _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend) |
f8df10f4 JJ |
3240 | - relocation; |
3241 | addend += msec->output_section->vma + msec->output_offset; | |
3242 | value = (value & ~ howto->dst_mask) | (addend & howto->dst_mask); | |
3243 | bfd_put_32 (input_bfd, value, contents + rel->r_offset); | |
3244 | } | |
3245 | #else | |
8517fae7 | 3246 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
f8df10f4 | 3247 | #endif |
252b5132 RH |
3248 | } |
3249 | else | |
3250 | { | |
560e09e9 NC |
3251 | bfd_boolean warned; |
3252 | bfd_boolean unresolved_reloc; | |
3253 | ||
b2a8e766 AM |
3254 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
3255 | r_symndx, symtab_hdr, sym_hashes, | |
3256 | h, sec, relocation, | |
3257 | unresolved_reloc, warned); | |
57e8b36a | 3258 | |
560e09e9 | 3259 | if (unresolved_reloc || relocation != 0) |
252b5132 | 3260 | { |
252b5132 | 3261 | /* In these cases, we don't need the relocation value. |
f21f3fe0 | 3262 | We check specially because in some obscure cases |
9b485d32 | 3263 | sec->output_section will be NULL. */ |
252b5132 RH |
3264 | switch (r_type) |
3265 | { | |
3266 | case R_ARM_PC24: | |
5b5bb741 PB |
3267 | #ifndef OLD_ARM_ABI |
3268 | case R_ARM_CALL: | |
3269 | case R_ARM_JUMP24: | |
ee06dc07 | 3270 | case R_ARM_PREL31: |
5b5bb741 | 3271 | #endif |
252b5132 | 3272 | case R_ARM_ABS32: |
6a360bf4 | 3273 | case R_ARM_THM_PC22: |
ecb2d096 DJ |
3274 | case R_ARM_PLT32: |
3275 | ||
252b5132 | 3276 | if (info->shared |
f5385ebf AM |
3277 | && ((!info->symbolic && h->dynindx != -1) |
3278 | || !h->def_regular) | |
5e681ec4 | 3279 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
05924f36 PB |
3280 | && ((input_section->flags & SEC_ALLOC) != 0 |
3281 | /* DWARF will emit R_ARM_ABS32 relocations in its | |
3282 | sections against symbols defined externally | |
3283 | in shared libraries. We can't do anything | |
3284 | with them here. */ | |
3285 | || ((input_section->flags & SEC_DEBUGGING) != 0 | |
f5385ebf | 3286 | && h->def_dynamic)) |
252b5132 | 3287 | ) |
560e09e9 | 3288 | relocation = 0; |
252b5132 | 3289 | break; |
f21f3fe0 | 3290 | |
252b5132 | 3291 | case R_ARM_GOTPC: |
560e09e9 | 3292 | relocation = 0; |
252b5132 | 3293 | break; |
f21f3fe0 | 3294 | |
252b5132 | 3295 | case R_ARM_GOT32: |
eb043451 PB |
3296 | #ifndef OLD_ARM_ABI |
3297 | case R_ARM_GOT_PREL: | |
3298 | #endif | |
50d6c878 | 3299 | if ((WILL_CALL_FINISH_DYNAMIC_SYMBOL |
560e09e9 | 3300 | (elf_hash_table (info)->dynamic_sections_created, |
50d6c878 DJ |
3301 | info->shared, h)) |
3302 | && (!info->shared | |
252b5132 | 3303 | || (!info->symbolic && h->dynindx != -1) |
f5385ebf | 3304 | || !h->def_regular)) |
560e09e9 | 3305 | relocation = 0; |
252b5132 | 3306 | break; |
f21f3fe0 | 3307 | |
252b5132 | 3308 | default: |
560e09e9 NC |
3309 | if (unresolved_reloc) |
3310 | _bfd_error_handler | |
d003868e AM |
3311 | (_("%B(%A): warning: unresolvable relocation %d against symbol `%s'"), |
3312 | input_bfd, input_section, | |
560e09e9 | 3313 | r_type, |
d003868e | 3314 | h->root.root.string); |
560e09e9 | 3315 | break; |
252b5132 | 3316 | } |
252b5132 RH |
3317 | } |
3318 | } | |
3319 | ||
3320 | if (h != NULL) | |
3321 | name = h->root.root.string; | |
3322 | else | |
3323 | { | |
3324 | name = (bfd_elf_string_from_elf_section | |
3325 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
3326 | if (name == NULL || *name == '\0') | |
3327 | name = bfd_section_name (input_bfd, sec); | |
3328 | } | |
f21f3fe0 | 3329 | |
252b5132 RH |
3330 | r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd, |
3331 | input_section, contents, rel, | |
3332 | relocation, info, sec, name, | |
3333 | (h ? ELF_ST_TYPE (h->type) : | |
780a67af | 3334 | ELF_ST_TYPE (sym->st_info)), h); |
252b5132 RH |
3335 | |
3336 | if (r != bfd_reloc_ok) | |
3337 | { | |
3338 | const char * msg = (const char *) 0; | |
3339 | ||
3340 | switch (r) | |
3341 | { | |
3342 | case bfd_reloc_overflow: | |
cf919dfd PB |
3343 | /* If the overflowing reloc was to an undefined symbol, |
3344 | we have already printed one error message and there | |
3345 | is no point complaining again. */ | |
3346 | if ((! h || | |
3347 | h->root.type != bfd_link_hash_undefined) | |
3348 | && (!((*info->callbacks->reloc_overflow) | |
dfeffb9f L |
3349 | (info, (h ? &h->root : NULL), name, howto->name, |
3350 | (bfd_vma) 0, input_bfd, input_section, | |
3351 | rel->r_offset)))) | |
b34976b6 | 3352 | return FALSE; |
252b5132 RH |
3353 | break; |
3354 | ||
3355 | case bfd_reloc_undefined: | |
3356 | if (!((*info->callbacks->undefined_symbol) | |
3357 | (info, name, input_bfd, input_section, | |
b34976b6 AM |
3358 | rel->r_offset, TRUE))) |
3359 | return FALSE; | |
252b5132 RH |
3360 | break; |
3361 | ||
3362 | case bfd_reloc_outofrange: | |
9b485d32 | 3363 | msg = _("internal error: out of range error"); |
252b5132 RH |
3364 | goto common_error; |
3365 | ||
3366 | case bfd_reloc_notsupported: | |
9b485d32 | 3367 | msg = _("internal error: unsupported relocation error"); |
252b5132 RH |
3368 | goto common_error; |
3369 | ||
3370 | case bfd_reloc_dangerous: | |
9b485d32 | 3371 | msg = _("internal error: dangerous error"); |
252b5132 RH |
3372 | goto common_error; |
3373 | ||
3374 | default: | |
9b485d32 | 3375 | msg = _("internal error: unknown error"); |
252b5132 RH |
3376 | /* fall through */ |
3377 | ||
3378 | common_error: | |
3379 | if (!((*info->callbacks->warning) | |
3380 | (info, msg, name, input_bfd, input_section, | |
3381 | rel->r_offset))) | |
b34976b6 | 3382 | return FALSE; |
252b5132 RH |
3383 | break; |
3384 | } | |
3385 | } | |
3386 | } | |
3387 | ||
b34976b6 | 3388 | return TRUE; |
252b5132 RH |
3389 | } |
3390 | ||
c178919b NC |
3391 | /* Set the right machine number. */ |
3392 | ||
3393 | static bfd_boolean | |
57e8b36a | 3394 | elf32_arm_object_p (bfd *abfd) |
c178919b | 3395 | { |
5a6c6817 | 3396 | unsigned int mach; |
57e8b36a | 3397 | |
5a6c6817 | 3398 | mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION); |
c178919b | 3399 | |
5a6c6817 NC |
3400 | if (mach != bfd_mach_arm_unknown) |
3401 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach); | |
3402 | ||
3403 | else if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT) | |
3404 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_ep9312); | |
e16bb312 | 3405 | |
e16bb312 | 3406 | else |
5a6c6817 | 3407 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach); |
c178919b NC |
3408 | |
3409 | return TRUE; | |
3410 | } | |
3411 | ||
fc830a83 | 3412 | /* Function to keep ARM specific flags in the ELF header. */ |
3c9458e9 | 3413 | |
b34976b6 | 3414 | static bfd_boolean |
57e8b36a | 3415 | elf32_arm_set_private_flags (bfd *abfd, flagword flags) |
252b5132 RH |
3416 | { |
3417 | if (elf_flags_init (abfd) | |
3418 | && elf_elfheader (abfd)->e_flags != flags) | |
3419 | { | |
fc830a83 NC |
3420 | if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN) |
3421 | { | |
fd2ec330 | 3422 | if (flags & EF_ARM_INTERWORK) |
d003868e AM |
3423 | (*_bfd_error_handler) |
3424 | (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"), | |
3425 | abfd); | |
fc830a83 | 3426 | else |
d003868e AM |
3427 | _bfd_error_handler |
3428 | (_("Warning: Clearing the interworking flag of %B due to outside request"), | |
3429 | abfd); | |
fc830a83 | 3430 | } |
252b5132 RH |
3431 | } |
3432 | else | |
3433 | { | |
3434 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 | 3435 | elf_flags_init (abfd) = TRUE; |
252b5132 RH |
3436 | } |
3437 | ||
b34976b6 | 3438 | return TRUE; |
252b5132 RH |
3439 | } |
3440 | ||
fc830a83 | 3441 | /* Copy backend specific data from one object module to another. */ |
9b485d32 | 3442 | |
b34976b6 | 3443 | static bfd_boolean |
57e8b36a | 3444 | elf32_arm_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
252b5132 RH |
3445 | { |
3446 | flagword in_flags; | |
3447 | flagword out_flags; | |
3448 | ||
fc830a83 | 3449 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
252b5132 | 3450 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
b34976b6 | 3451 | return TRUE; |
252b5132 | 3452 | |
fc830a83 | 3453 | in_flags = elf_elfheader (ibfd)->e_flags; |
252b5132 RH |
3454 | out_flags = elf_elfheader (obfd)->e_flags; |
3455 | ||
fc830a83 NC |
3456 | if (elf_flags_init (obfd) |
3457 | && EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN | |
3458 | && in_flags != out_flags) | |
252b5132 | 3459 | { |
252b5132 | 3460 | /* Cannot mix APCS26 and APCS32 code. */ |
fd2ec330 | 3461 | if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26)) |
b34976b6 | 3462 | return FALSE; |
252b5132 RH |
3463 | |
3464 | /* Cannot mix float APCS and non-float APCS code. */ | |
fd2ec330 | 3465 | if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT)) |
b34976b6 | 3466 | return FALSE; |
252b5132 RH |
3467 | |
3468 | /* If the src and dest have different interworking flags | |
3469 | then turn off the interworking bit. */ | |
fd2ec330 | 3470 | if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK)) |
252b5132 | 3471 | { |
fd2ec330 | 3472 | if (out_flags & EF_ARM_INTERWORK) |
d003868e AM |
3473 | _bfd_error_handler |
3474 | (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"), | |
3475 | obfd, ibfd); | |
252b5132 | 3476 | |
fd2ec330 | 3477 | in_flags &= ~EF_ARM_INTERWORK; |
252b5132 | 3478 | } |
1006ba19 PB |
3479 | |
3480 | /* Likewise for PIC, though don't warn for this case. */ | |
fd2ec330 PB |
3481 | if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC)) |
3482 | in_flags &= ~EF_ARM_PIC; | |
252b5132 RH |
3483 | } |
3484 | ||
3485 | elf_elfheader (obfd)->e_flags = in_flags; | |
b34976b6 | 3486 | elf_flags_init (obfd) = TRUE; |
252b5132 | 3487 | |
b34976b6 | 3488 | return TRUE; |
252b5132 RH |
3489 | } |
3490 | ||
3491 | /* Merge backend specific data from an object file to the output | |
3492 | object file when linking. */ | |
9b485d32 | 3493 | |
b34976b6 | 3494 | static bfd_boolean |
57e8b36a | 3495 | elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd) |
252b5132 RH |
3496 | { |
3497 | flagword out_flags; | |
3498 | flagword in_flags; | |
b34976b6 | 3499 | bfd_boolean flags_compatible = TRUE; |
cf919dfd | 3500 | asection *sec; |
252b5132 | 3501 | |
9b485d32 | 3502 | /* Check if we have the same endianess. */ |
82e51918 | 3503 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) |
b34976b6 | 3504 | return FALSE; |
1fe494a5 | 3505 | |
252b5132 RH |
3506 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
3507 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 3508 | return TRUE; |
252b5132 | 3509 | |
252b5132 RH |
3510 | /* The input BFD must have had its flags initialised. */ |
3511 | /* The following seems bogus to me -- The flags are initialized in | |
3512 | the assembler but I don't think an elf_flags_init field is | |
9b485d32 | 3513 | written into the object. */ |
252b5132 RH |
3514 | /* BFD_ASSERT (elf_flags_init (ibfd)); */ |
3515 | ||
3516 | in_flags = elf_elfheader (ibfd)->e_flags; | |
3517 | out_flags = elf_elfheader (obfd)->e_flags; | |
3518 | ||
3519 | if (!elf_flags_init (obfd)) | |
3520 | { | |
fe077fa6 NC |
3521 | /* If the input is the default architecture and had the default |
3522 | flags then do not bother setting the flags for the output | |
3523 | architecture, instead allow future merges to do this. If no | |
3524 | future merges ever set these flags then they will retain their | |
3525 | uninitialised values, which surprise surprise, correspond | |
252b5132 | 3526 | to the default values. */ |
fe077fa6 NC |
3527 | if (bfd_get_arch_info (ibfd)->the_default |
3528 | && elf_elfheader (ibfd)->e_flags == 0) | |
b34976b6 | 3529 | return TRUE; |
252b5132 | 3530 | |
b34976b6 | 3531 | elf_flags_init (obfd) = TRUE; |
252b5132 RH |
3532 | elf_elfheader (obfd)->e_flags = in_flags; |
3533 | ||
3534 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
3535 | && bfd_get_arch_info (obfd)->the_default) | |
3536 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); | |
3537 | ||
b34976b6 | 3538 | return TRUE; |
252b5132 RH |
3539 | } |
3540 | ||
5a6c6817 NC |
3541 | /* Determine what should happen if the input ARM architecture |
3542 | does not match the output ARM architecture. */ | |
3543 | if (! bfd_arm_merge_machines (ibfd, obfd)) | |
3544 | return FALSE; | |
e16bb312 | 3545 | |
1006ba19 | 3546 | /* Identical flags must be compatible. */ |
252b5132 | 3547 | if (in_flags == out_flags) |
b34976b6 | 3548 | return TRUE; |
252b5132 | 3549 | |
35a0f415 DJ |
3550 | /* Check to see if the input BFD actually contains any sections. If |
3551 | not, its flags may not have been initialised either, but it | |
3552 | cannot actually cause any incompatibility. Do not short-circuit | |
3553 | dynamic objects; their section list may be emptied by | |
d1f161ea | 3554 | elf_link_add_object_symbols. |
35a0f415 | 3555 | |
d1f161ea NC |
3556 | Also check to see if there are no code sections in the input. |
3557 | In this case there is no need to check for code specific flags. | |
3558 | XXX - do we need to worry about floating-point format compatability | |
3559 | in data sections ? */ | |
35a0f415 | 3560 | if (!(ibfd->flags & DYNAMIC)) |
cf919dfd | 3561 | { |
35a0f415 | 3562 | bfd_boolean null_input_bfd = TRUE; |
d1f161ea | 3563 | bfd_boolean only_data_sections = TRUE; |
35a0f415 DJ |
3564 | |
3565 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
cf919dfd | 3566 | { |
35a0f415 DJ |
3567 | /* Ignore synthetic glue sections. */ |
3568 | if (strcmp (sec->name, ".glue_7") | |
3569 | && strcmp (sec->name, ".glue_7t")) | |
3570 | { | |
d1f161ea NC |
3571 | if ((bfd_get_section_flags (ibfd, sec) |
3572 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
3573 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
3574 | only_data_sections = FALSE; | |
3575 | ||
35a0f415 DJ |
3576 | null_input_bfd = FALSE; |
3577 | break; | |
3578 | } | |
cf919dfd | 3579 | } |
d1f161ea NC |
3580 | |
3581 | if (null_input_bfd || only_data_sections) | |
35a0f415 | 3582 | return TRUE; |
cf919dfd | 3583 | } |
cf919dfd | 3584 | |
252b5132 | 3585 | /* Complain about various flag mismatches. */ |
fc830a83 NC |
3586 | if (EF_ARM_EABI_VERSION (in_flags) != EF_ARM_EABI_VERSION (out_flags)) |
3587 | { | |
d003868e | 3588 | _bfd_error_handler |
3656d5e3 | 3589 | (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"), |
d003868e AM |
3590 | ibfd, obfd, |
3591 | (in_flags & EF_ARM_EABIMASK) >> 24, | |
3592 | (out_flags & EF_ARM_EABIMASK) >> 24); | |
b34976b6 | 3593 | return FALSE; |
fc830a83 | 3594 | } |
252b5132 | 3595 | |
1006ba19 PB |
3596 | /* Not sure what needs to be checked for EABI versions >= 1. */ |
3597 | if (EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN) | |
3598 | { | |
fd2ec330 | 3599 | if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26)) |
1006ba19 | 3600 | { |
d003868e AM |
3601 | _bfd_error_handler |
3602 | (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"), | |
3603 | ibfd, obfd, | |
3604 | in_flags & EF_ARM_APCS_26 ? 26 : 32, | |
3605 | out_flags & EF_ARM_APCS_26 ? 26 : 32); | |
b34976b6 | 3606 | flags_compatible = FALSE; |
1006ba19 | 3607 | } |
252b5132 | 3608 | |
fd2ec330 | 3609 | if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT)) |
1006ba19 | 3610 | { |
5eefb65f | 3611 | if (in_flags & EF_ARM_APCS_FLOAT) |
d003868e AM |
3612 | _bfd_error_handler |
3613 | (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"), | |
3614 | ibfd, obfd); | |
5eefb65f | 3615 | else |
d003868e AM |
3616 | _bfd_error_handler |
3617 | (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"), | |
3618 | ibfd, obfd); | |
63b0f745 | 3619 | |
b34976b6 | 3620 | flags_compatible = FALSE; |
1006ba19 | 3621 | } |
252b5132 | 3622 | |
96a846ea | 3623 | if ((in_flags & EF_ARM_VFP_FLOAT) != (out_flags & EF_ARM_VFP_FLOAT)) |
1006ba19 | 3624 | { |
96a846ea | 3625 | if (in_flags & EF_ARM_VFP_FLOAT) |
d003868e AM |
3626 | _bfd_error_handler |
3627 | (_("ERROR: %B uses VFP instructions, whereas %B does not"), | |
3628 | ibfd, obfd); | |
5eefb65f | 3629 | else |
d003868e AM |
3630 | _bfd_error_handler |
3631 | (_("ERROR: %B uses FPA instructions, whereas %B does not"), | |
3632 | ibfd, obfd); | |
fde78edd NC |
3633 | |
3634 | flags_compatible = FALSE; | |
3635 | } | |
3636 | ||
3637 | if ((in_flags & EF_ARM_MAVERICK_FLOAT) != (out_flags & EF_ARM_MAVERICK_FLOAT)) | |
3638 | { | |
3639 | if (in_flags & EF_ARM_MAVERICK_FLOAT) | |
d003868e AM |
3640 | _bfd_error_handler |
3641 | (_("ERROR: %B uses Maverick instructions, whereas %B does not"), | |
3642 | ibfd, obfd); | |
fde78edd | 3643 | else |
d003868e AM |
3644 | _bfd_error_handler |
3645 | (_("ERROR: %B does not use Maverick instructions, whereas %B does"), | |
3646 | ibfd, obfd); | |
63b0f745 | 3647 | |
b34976b6 | 3648 | flags_compatible = FALSE; |
1006ba19 | 3649 | } |
96a846ea RE |
3650 | |
3651 | #ifdef EF_ARM_SOFT_FLOAT | |
3652 | if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT)) | |
3653 | { | |
3654 | /* We can allow interworking between code that is VFP format | |
3655 | layout, and uses either soft float or integer regs for | |
3656 | passing floating point arguments and results. We already | |
3657 | know that the APCS_FLOAT flags match; similarly for VFP | |
3658 | flags. */ | |
3659 | if ((in_flags & EF_ARM_APCS_FLOAT) != 0 | |
3660 | || (in_flags & EF_ARM_VFP_FLOAT) == 0) | |
3661 | { | |
3662 | if (in_flags & EF_ARM_SOFT_FLOAT) | |
d003868e AM |
3663 | _bfd_error_handler |
3664 | (_("ERROR: %B uses software FP, whereas %B uses hardware FP"), | |
3665 | ibfd, obfd); | |
96a846ea | 3666 | else |
d003868e AM |
3667 | _bfd_error_handler |
3668 | (_("ERROR: %B uses hardware FP, whereas %B uses software FP"), | |
3669 | ibfd, obfd); | |
96a846ea | 3670 | |
b34976b6 | 3671 | flags_compatible = FALSE; |
96a846ea RE |
3672 | } |
3673 | } | |
ee43f35e | 3674 | #endif |
252b5132 | 3675 | |
1006ba19 | 3676 | /* Interworking mismatch is only a warning. */ |
fd2ec330 | 3677 | if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK)) |
8f615d07 | 3678 | { |
e3c8793a NC |
3679 | if (in_flags & EF_ARM_INTERWORK) |
3680 | { | |
d003868e AM |
3681 | _bfd_error_handler |
3682 | (_("Warning: %B supports interworking, whereas %B does not"), | |
3683 | ibfd, obfd); | |
e3c8793a NC |
3684 | } |
3685 | else | |
3686 | { | |
d003868e AM |
3687 | _bfd_error_handler |
3688 | (_("Warning: %B does not support interworking, whereas %B does"), | |
3689 | ibfd, obfd); | |
e3c8793a | 3690 | } |
8f615d07 | 3691 | } |
252b5132 | 3692 | } |
63b0f745 | 3693 | |
1006ba19 | 3694 | return flags_compatible; |
252b5132 RH |
3695 | } |
3696 | ||
9b485d32 NC |
3697 | /* Display the flags field. */ |
3698 | ||
b34976b6 | 3699 | static bfd_boolean |
57e8b36a | 3700 | elf32_arm_print_private_bfd_data (bfd *abfd, void * ptr) |
252b5132 | 3701 | { |
fc830a83 NC |
3702 | FILE * file = (FILE *) ptr; |
3703 | unsigned long flags; | |
252b5132 RH |
3704 | |
3705 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
3706 | ||
3707 | /* Print normal ELF private data. */ | |
3708 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
3709 | ||
fc830a83 | 3710 | flags = elf_elfheader (abfd)->e_flags; |
9b485d32 NC |
3711 | /* Ignore init flag - it may not be set, despite the flags field |
3712 | containing valid data. */ | |
252b5132 RH |
3713 | |
3714 | /* xgettext:c-format */ | |
9b485d32 | 3715 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); |
252b5132 | 3716 | |
fc830a83 NC |
3717 | switch (EF_ARM_EABI_VERSION (flags)) |
3718 | { | |
3719 | case EF_ARM_EABI_UNKNOWN: | |
4cc11e76 | 3720 | /* The following flag bits are GNU extensions and not part of the |
fc830a83 NC |
3721 | official ARM ELF extended ABI. Hence they are only decoded if |
3722 | the EABI version is not set. */ | |
fd2ec330 | 3723 | if (flags & EF_ARM_INTERWORK) |
9b485d32 | 3724 | fprintf (file, _(" [interworking enabled]")); |
9a5aca8c | 3725 | |
fd2ec330 | 3726 | if (flags & EF_ARM_APCS_26) |
6c571f00 | 3727 | fprintf (file, " [APCS-26]"); |
fc830a83 | 3728 | else |
6c571f00 | 3729 | fprintf (file, " [APCS-32]"); |
9a5aca8c | 3730 | |
96a846ea RE |
3731 | if (flags & EF_ARM_VFP_FLOAT) |
3732 | fprintf (file, _(" [VFP float format]")); | |
fde78edd NC |
3733 | else if (flags & EF_ARM_MAVERICK_FLOAT) |
3734 | fprintf (file, _(" [Maverick float format]")); | |
96a846ea RE |
3735 | else |
3736 | fprintf (file, _(" [FPA float format]")); | |
3737 | ||
fd2ec330 | 3738 | if (flags & EF_ARM_APCS_FLOAT) |
9b485d32 | 3739 | fprintf (file, _(" [floats passed in float registers]")); |
9a5aca8c | 3740 | |
fd2ec330 | 3741 | if (flags & EF_ARM_PIC) |
9b485d32 | 3742 | fprintf (file, _(" [position independent]")); |
fc830a83 | 3743 | |
fd2ec330 | 3744 | if (flags & EF_ARM_NEW_ABI) |
9b485d32 | 3745 | fprintf (file, _(" [new ABI]")); |
9a5aca8c | 3746 | |
fd2ec330 | 3747 | if (flags & EF_ARM_OLD_ABI) |
9b485d32 | 3748 | fprintf (file, _(" [old ABI]")); |
9a5aca8c | 3749 | |
fd2ec330 | 3750 | if (flags & EF_ARM_SOFT_FLOAT) |
9b485d32 | 3751 | fprintf (file, _(" [software FP]")); |
9a5aca8c | 3752 | |
96a846ea RE |
3753 | flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT |
3754 | | EF_ARM_PIC | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI | |
fde78edd NC |
3755 | | EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT |
3756 | | EF_ARM_MAVERICK_FLOAT); | |
fc830a83 | 3757 | break; |
9a5aca8c | 3758 | |
fc830a83 | 3759 | case EF_ARM_EABI_VER1: |
9b485d32 | 3760 | fprintf (file, _(" [Version1 EABI]")); |
9a5aca8c | 3761 | |
fc830a83 | 3762 | if (flags & EF_ARM_SYMSARESORTED) |
9b485d32 | 3763 | fprintf (file, _(" [sorted symbol table]")); |
fc830a83 | 3764 | else |
9b485d32 | 3765 | fprintf (file, _(" [unsorted symbol table]")); |
9a5aca8c | 3766 | |
fc830a83 NC |
3767 | flags &= ~ EF_ARM_SYMSARESORTED; |
3768 | break; | |
9a5aca8c | 3769 | |
fd2ec330 PB |
3770 | case EF_ARM_EABI_VER2: |
3771 | fprintf (file, _(" [Version2 EABI]")); | |
3772 | ||
3773 | if (flags & EF_ARM_SYMSARESORTED) | |
3774 | fprintf (file, _(" [sorted symbol table]")); | |
3775 | else | |
3776 | fprintf (file, _(" [unsorted symbol table]")); | |
3777 | ||
3778 | if (flags & EF_ARM_DYNSYMSUSESEGIDX) | |
3779 | fprintf (file, _(" [dynamic symbols use segment index]")); | |
3780 | ||
3781 | if (flags & EF_ARM_MAPSYMSFIRST) | |
3782 | fprintf (file, _(" [mapping symbols precede others]")); | |
3783 | ||
99e4ae17 | 3784 | flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX |
fd2ec330 PB |
3785 | | EF_ARM_MAPSYMSFIRST); |
3786 | break; | |
3787 | ||
d507cf36 PB |
3788 | case EF_ARM_EABI_VER3: |
3789 | fprintf (file, _(" [Version3 EABI]")); | |
8cb51566 PB |
3790 | break; |
3791 | ||
3792 | case EF_ARM_EABI_VER4: | |
3793 | fprintf (file, _(" [Version4 EABI]")); | |
d507cf36 PB |
3794 | |
3795 | if (flags & EF_ARM_BE8) | |
3796 | fprintf (file, _(" [BE8]")); | |
3797 | ||
3798 | if (flags & EF_ARM_LE8) | |
3799 | fprintf (file, _(" [LE8]")); | |
3800 | ||
3801 | flags &= ~(EF_ARM_LE8 | EF_ARM_BE8); | |
3802 | break; | |
3803 | ||
fc830a83 | 3804 | default: |
9b485d32 | 3805 | fprintf (file, _(" <EABI version unrecognised>")); |
fc830a83 NC |
3806 | break; |
3807 | } | |
252b5132 | 3808 | |
fc830a83 | 3809 | flags &= ~ EF_ARM_EABIMASK; |
252b5132 | 3810 | |
fc830a83 | 3811 | if (flags & EF_ARM_RELEXEC) |
9b485d32 | 3812 | fprintf (file, _(" [relocatable executable]")); |
252b5132 | 3813 | |
fc830a83 | 3814 | if (flags & EF_ARM_HASENTRY) |
9b485d32 | 3815 | fprintf (file, _(" [has entry point]")); |
252b5132 | 3816 | |
fc830a83 NC |
3817 | flags &= ~ (EF_ARM_RELEXEC | EF_ARM_HASENTRY); |
3818 | ||
3819 | if (flags) | |
9b485d32 | 3820 | fprintf (file, _("<Unrecognised flag bits set>")); |
9a5aca8c | 3821 | |
252b5132 RH |
3822 | fputc ('\n', file); |
3823 | ||
b34976b6 | 3824 | return TRUE; |
252b5132 RH |
3825 | } |
3826 | ||
3827 | static int | |
57e8b36a | 3828 | elf32_arm_get_symbol_type (Elf_Internal_Sym * elf_sym, int type) |
252b5132 | 3829 | { |
2f0ca46a NC |
3830 | switch (ELF_ST_TYPE (elf_sym->st_info)) |
3831 | { | |
3832 | case STT_ARM_TFUNC: | |
3833 | return ELF_ST_TYPE (elf_sym->st_info); | |
ce855c42 | 3834 | |
2f0ca46a NC |
3835 | case STT_ARM_16BIT: |
3836 | /* If the symbol is not an object, return the STT_ARM_16BIT flag. | |
3837 | This allows us to distinguish between data used by Thumb instructions | |
3838 | and non-data (which is probably code) inside Thumb regions of an | |
3839 | executable. */ | |
3840 | if (type != STT_OBJECT) | |
3841 | return ELF_ST_TYPE (elf_sym->st_info); | |
3842 | break; | |
9a5aca8c | 3843 | |
ce855c42 NC |
3844 | default: |
3845 | break; | |
2f0ca46a NC |
3846 | } |
3847 | ||
3848 | return type; | |
252b5132 | 3849 | } |
f21f3fe0 | 3850 | |
252b5132 | 3851 | static asection * |
57e8b36a NC |
3852 | elf32_arm_gc_mark_hook (asection * sec, |
3853 | struct bfd_link_info * info ATTRIBUTE_UNUSED, | |
3854 | Elf_Internal_Rela * rel, | |
3855 | struct elf_link_hash_entry * h, | |
3856 | Elf_Internal_Sym * sym) | |
252b5132 RH |
3857 | { |
3858 | if (h != NULL) | |
3859 | { | |
3860 | switch (ELF32_R_TYPE (rel->r_info)) | |
3861 | { | |
3862 | case R_ARM_GNU_VTINHERIT: | |
3863 | case R_ARM_GNU_VTENTRY: | |
3864 | break; | |
3865 | ||
3866 | default: | |
3867 | switch (h->root.type) | |
3868 | { | |
3869 | case bfd_link_hash_defined: | |
3870 | case bfd_link_hash_defweak: | |
3871 | return h->root.u.def.section; | |
3872 | ||
3873 | case bfd_link_hash_common: | |
3874 | return h->root.u.c.p->section; | |
e049a0de ILT |
3875 | |
3876 | default: | |
3877 | break; | |
252b5132 RH |
3878 | } |
3879 | } | |
3880 | } | |
3881 | else | |
1e2f5b6e | 3882 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
9ad5cbcf | 3883 | |
252b5132 RH |
3884 | return NULL; |
3885 | } | |
3886 | ||
780a67af NC |
3887 | /* Update the got entry reference counts for the section being removed. */ |
3888 | ||
b34976b6 | 3889 | static bfd_boolean |
57e8b36a NC |
3890 | elf32_arm_gc_sweep_hook (bfd * abfd ATTRIBUTE_UNUSED, |
3891 | struct bfd_link_info * info ATTRIBUTE_UNUSED, | |
3892 | asection * sec ATTRIBUTE_UNUSED, | |
3893 | const Elf_Internal_Rela * relocs ATTRIBUTE_UNUSED) | |
252b5132 | 3894 | { |
5e681ec4 PB |
3895 | Elf_Internal_Shdr *symtab_hdr; |
3896 | struct elf_link_hash_entry **sym_hashes; | |
3897 | bfd_signed_vma *local_got_refcounts; | |
3898 | const Elf_Internal_Rela *rel, *relend; | |
3899 | unsigned long r_symndx; | |
3900 | struct elf_link_hash_entry *h; | |
eb043451 PB |
3901 | struct elf32_arm_link_hash_table * globals; |
3902 | ||
3903 | globals = elf32_arm_hash_table (info); | |
5e681ec4 PB |
3904 | |
3905 | elf_section_data (sec)->local_dynrel = NULL; | |
3906 | ||
3907 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
3908 | sym_hashes = elf_sym_hashes (abfd); | |
3909 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
3910 | ||
3911 | relend = relocs + sec->reloc_count; | |
3912 | for (rel = relocs; rel < relend; rel++) | |
eb043451 PB |
3913 | { |
3914 | int r_type; | |
5e681ec4 | 3915 | |
eb043451 | 3916 | r_type = ELF32_R_TYPE (rel->r_info); |
b6ee372a | 3917 | #ifndef OLD_ARM_ABI |
eb043451 | 3918 | r_type = arm_real_reloc_type (globals, r_type); |
b6ee372a | 3919 | #endif |
eb043451 PB |
3920 | switch (r_type) |
3921 | { | |
3922 | case R_ARM_GOT32: | |
3923 | #ifndef OLD_ARM_ABI | |
3924 | case R_ARM_GOT_PREL: | |
3925 | #endif | |
3926 | r_symndx = ELF32_R_SYM (rel->r_info); | |
3927 | if (r_symndx >= symtab_hdr->sh_info) | |
3928 | { | |
3929 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3930 | if (h->got.refcount > 0) | |
3931 | h->got.refcount -= 1; | |
3932 | } | |
3933 | else if (local_got_refcounts != NULL) | |
3934 | { | |
3935 | if (local_got_refcounts[r_symndx] > 0) | |
3936 | local_got_refcounts[r_symndx] -= 1; | |
3937 | } | |
3938 | break; | |
3939 | ||
3940 | case R_ARM_ABS32: | |
3941 | case R_ARM_REL32: | |
3942 | case R_ARM_PC24: | |
3943 | case R_ARM_PLT32: | |
3944 | #ifndef OLD_ARM_ABI | |
5b5bb741 PB |
3945 | case R_ARM_CALL: |
3946 | case R_ARM_JUMP24: | |
eb043451 PB |
3947 | case R_ARM_PREL31: |
3948 | #endif | |
b7693d02 DJ |
3949 | case R_ARM_THM_PC22: |
3950 | /* Should the interworking branches be here also? */ | |
3951 | ||
eb043451 PB |
3952 | r_symndx = ELF32_R_SYM (rel->r_info); |
3953 | if (r_symndx >= symtab_hdr->sh_info) | |
3954 | { | |
3955 | struct elf32_arm_link_hash_entry *eh; | |
3956 | struct elf32_arm_relocs_copied **pp; | |
3957 | struct elf32_arm_relocs_copied *p; | |
5e681ec4 | 3958 | |
eb043451 | 3959 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b7693d02 | 3960 | eh = (struct elf32_arm_link_hash_entry *) h; |
5e681ec4 | 3961 | |
eb043451 | 3962 | if (h->plt.refcount > 0) |
b7693d02 DJ |
3963 | { |
3964 | h->plt.refcount -= 1; | |
3965 | if (ELF32_R_TYPE (rel->r_info) == R_ARM_THM_PC22) | |
3966 | eh->plt_thumb_refcount--; | |
3967 | } | |
5e681ec4 | 3968 | |
eb043451 | 3969 | if (r_type == R_ARM_ABS32 |
eb043451 PB |
3970 | || r_type == R_ARM_REL32) |
3971 | { | |
eb043451 PB |
3972 | for (pp = &eh->relocs_copied; (p = *pp) != NULL; |
3973 | pp = &p->next) | |
3974 | if (p->section == sec) | |
3975 | { | |
3976 | p->count -= 1; | |
3977 | if (p->count == 0) | |
3978 | *pp = p->next; | |
3979 | break; | |
3980 | } | |
3981 | } | |
3982 | } | |
3983 | break; | |
5e681ec4 | 3984 | |
eb043451 PB |
3985 | default: |
3986 | break; | |
3987 | } | |
3988 | } | |
5e681ec4 | 3989 | |
b34976b6 | 3990 | return TRUE; |
252b5132 RH |
3991 | } |
3992 | ||
780a67af NC |
3993 | /* Look through the relocs for a section during the first phase. */ |
3994 | ||
b34976b6 | 3995 | static bfd_boolean |
57e8b36a NC |
3996 | elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info, |
3997 | asection *sec, const Elf_Internal_Rela *relocs) | |
252b5132 | 3998 | { |
b34976b6 AM |
3999 | Elf_Internal_Shdr *symtab_hdr; |
4000 | struct elf_link_hash_entry **sym_hashes; | |
4001 | struct elf_link_hash_entry **sym_hashes_end; | |
4002 | const Elf_Internal_Rela *rel; | |
4003 | const Elf_Internal_Rela *rel_end; | |
4004 | bfd *dynobj; | |
5e681ec4 | 4005 | asection *sreloc; |
b34976b6 | 4006 | bfd_vma *local_got_offsets; |
5e681ec4 | 4007 | struct elf32_arm_link_hash_table *htab; |
9a5aca8c | 4008 | |
1049f94e | 4009 | if (info->relocatable) |
b34976b6 | 4010 | return TRUE; |
9a5aca8c | 4011 | |
5e681ec4 PB |
4012 | htab = elf32_arm_hash_table (info); |
4013 | sreloc = NULL; | |
9a5aca8c | 4014 | |
252b5132 RH |
4015 | dynobj = elf_hash_table (info)->dynobj; |
4016 | local_got_offsets = elf_local_got_offsets (abfd); | |
f21f3fe0 | 4017 | |
252b5132 RH |
4018 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
4019 | sym_hashes = elf_sym_hashes (abfd); | |
9b485d32 NC |
4020 | sym_hashes_end = sym_hashes |
4021 | + symtab_hdr->sh_size / sizeof (Elf32_External_Sym); | |
4022 | ||
252b5132 RH |
4023 | if (!elf_bad_symtab (abfd)) |
4024 | sym_hashes_end -= symtab_hdr->sh_info; | |
9b485d32 | 4025 | |
252b5132 RH |
4026 | rel_end = relocs + sec->reloc_count; |
4027 | for (rel = relocs; rel < rel_end; rel++) | |
4028 | { | |
4029 | struct elf_link_hash_entry *h; | |
b7693d02 | 4030 | struct elf32_arm_link_hash_entry *eh; |
252b5132 | 4031 | unsigned long r_symndx; |
eb043451 | 4032 | int r_type; |
9a5aca8c | 4033 | |
252b5132 | 4034 | r_symndx = ELF32_R_SYM (rel->r_info); |
eb043451 PB |
4035 | r_type = ELF32_R_TYPE (rel->r_info); |
4036 | #ifndef OLD_ARM_ABI | |
4037 | r_type = arm_real_reloc_type (htab, r_type); | |
4038 | #endif | |
252b5132 RH |
4039 | if (r_symndx < symtab_hdr->sh_info) |
4040 | h = NULL; | |
4041 | else | |
4042 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
9a5aca8c | 4043 | |
b7693d02 DJ |
4044 | eh = (struct elf32_arm_link_hash_entry *) h; |
4045 | ||
eb043451 | 4046 | switch (r_type) |
252b5132 | 4047 | { |
5e681ec4 | 4048 | case R_ARM_GOT32: |
eb043451 PB |
4049 | #ifndef OLD_ARM_ABI |
4050 | case R_ARM_GOT_PREL: | |
4051 | #endif | |
5e681ec4 | 4052 | /* This symbol requires a global offset table entry. */ |
252b5132 RH |
4053 | if (h != NULL) |
4054 | { | |
5e681ec4 | 4055 | h->got.refcount++; |
252b5132 RH |
4056 | } |
4057 | else | |
4058 | { | |
5e681ec4 PB |
4059 | bfd_signed_vma *local_got_refcounts; |
4060 | ||
4061 | /* This is a global offset table entry for a local symbol. */ | |
4062 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
4063 | if (local_got_refcounts == NULL) | |
252b5132 | 4064 | { |
dc810e39 | 4065 | bfd_size_type size; |
252b5132 | 4066 | |
dc810e39 | 4067 | size = symtab_hdr->sh_info; |
57e8b36a NC |
4068 | size *= (sizeof (bfd_signed_vma) + sizeof (char)); |
4069 | local_got_refcounts = bfd_zalloc (abfd, size); | |
5e681ec4 | 4070 | if (local_got_refcounts == NULL) |
b34976b6 | 4071 | return FALSE; |
5e681ec4 | 4072 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
252b5132 | 4073 | } |
5e681ec4 | 4074 | local_got_refcounts[r_symndx] += 1; |
252b5132 | 4075 | } |
eb043451 PB |
4076 | if (r_type == R_ARM_GOT32) |
4077 | break; | |
4078 | /* Fall through. */ | |
252b5132 | 4079 | |
5e681ec4 PB |
4080 | case R_ARM_GOTOFF: |
4081 | case R_ARM_GOTPC: | |
4082 | if (htab->sgot == NULL) | |
4083 | { | |
4084 | if (htab->root.dynobj == NULL) | |
4085 | htab->root.dynobj = abfd; | |
4086 | if (!create_got_section (htab->root.dynobj, info)) | |
4087 | return FALSE; | |
4088 | } | |
252b5132 RH |
4089 | break; |
4090 | ||
4091 | case R_ARM_ABS32: | |
4092 | case R_ARM_REL32: | |
4093 | case R_ARM_PC24: | |
7359ea65 | 4094 | case R_ARM_PLT32: |
eb043451 | 4095 | #ifndef OLD_ARM_ABI |
5b5bb741 PB |
4096 | case R_ARM_CALL: |
4097 | case R_ARM_JUMP24: | |
eb043451 PB |
4098 | case R_ARM_PREL31: |
4099 | #endif | |
b7693d02 DJ |
4100 | case R_ARM_THM_PC22: |
4101 | /* Should the interworking branches be listed here? */ | |
7359ea65 | 4102 | if (h != NULL) |
5e681ec4 PB |
4103 | { |
4104 | /* If this reloc is in a read-only section, we might | |
4105 | need a copy reloc. We can't check reliably at this | |
4106 | stage whether the section is read-only, as input | |
4107 | sections have not yet been mapped to output sections. | |
4108 | Tentatively set the flag for now, and correct in | |
4109 | adjust_dynamic_symbol. */ | |
7359ea65 | 4110 | if (!info->shared) |
f5385ebf | 4111 | h->non_got_ref = 1; |
7359ea65 | 4112 | |
5e681ec4 | 4113 | /* We may need a .plt entry if the function this reloc |
c84cd8ee DJ |
4114 | refers to is in a different object. We can't tell for |
4115 | sure yet, because something later might force the | |
4116 | symbol local. */ | |
eb043451 | 4117 | if (r_type == R_ARM_PC24 |
5b5bb741 PB |
4118 | #ifndef OLD_ARM_ABI |
4119 | || r_type == R_ARM_CALL | |
4120 | || r_type == R_ARM_JUMP24 | |
ee06dc07 | 4121 | || r_type == R_ARM_PREL31 |
5b5bb741 | 4122 | #endif |
b7693d02 DJ |
4123 | || r_type == R_ARM_PLT32 |
4124 | || r_type == R_ARM_THM_PC22) | |
f5385ebf | 4125 | h->needs_plt = 1; |
4f199be3 DJ |
4126 | |
4127 | /* If we create a PLT entry, this relocation will reference | |
4128 | it, even if it's an ABS32 relocation. */ | |
4129 | h->plt.refcount += 1; | |
b7693d02 DJ |
4130 | |
4131 | if (r_type == R_ARM_THM_PC22) | |
4132 | eh->plt_thumb_refcount += 1; | |
5e681ec4 PB |
4133 | } |
4134 | ||
252b5132 RH |
4135 | /* If we are creating a shared library, and this is a reloc |
4136 | against a global symbol, or a non PC relative reloc | |
4137 | against a local symbol, then we need to copy the reloc | |
4138 | into the shared library. However, if we are linking with | |
4139 | -Bsymbolic, we do not need to copy a reloc against a | |
4140 | global symbol which is defined in an object we are | |
4141 | including in the link (i.e., DEF_REGULAR is set). At | |
4142 | this point we have not seen all the input files, so it is | |
4143 | possible that DEF_REGULAR is not set now but will be set | |
4144 | later (it is never cleared). We account for that | |
4145 | possibility below by storing information in the | |
5e681ec4 | 4146 | relocs_copied field of the hash table entry. */ |
252b5132 | 4147 | if (info->shared |
5e681ec4 | 4148 | && (sec->flags & SEC_ALLOC) != 0 |
eb043451 PB |
4149 | && ((r_type != R_ARM_PC24 |
4150 | && r_type != R_ARM_PLT32 | |
b6ee372a | 4151 | #ifndef OLD_ARM_ABI |
5b5bb741 PB |
4152 | && r_type != R_ARM_CALL |
4153 | && r_type != R_ARM_JUMP24 | |
eb043451 | 4154 | && r_type != R_ARM_PREL31 |
b6ee372a | 4155 | #endif |
b7693d02 DJ |
4156 | && r_type != R_ARM_REL32 |
4157 | && r_type != R_ARM_THM_PC22) | |
5e681ec4 PB |
4158 | || (h != NULL |
4159 | && (! info->symbolic | |
f5385ebf | 4160 | || !h->def_regular)))) |
252b5132 | 4161 | { |
5e681ec4 PB |
4162 | struct elf32_arm_relocs_copied *p, **head; |
4163 | ||
252b5132 RH |
4164 | /* When creating a shared object, we must copy these |
4165 | reloc types into the output file. We create a reloc | |
4166 | section in dynobj and make room for this reloc. */ | |
4167 | if (sreloc == NULL) | |
4168 | { | |
4169 | const char * name; | |
4170 | ||
4171 | name = (bfd_elf_string_from_elf_section | |
4172 | (abfd, | |
4173 | elf_elfheader (abfd)->e_shstrndx, | |
4174 | elf_section_data (sec)->rel_hdr.sh_name)); | |
4175 | if (name == NULL) | |
b34976b6 | 4176 | return FALSE; |
252b5132 RH |
4177 | |
4178 | BFD_ASSERT (strncmp (name, ".rel", 4) == 0 | |
99e4ae17 | 4179 | && strcmp (bfd_get_section_name (abfd, sec), |
252b5132 RH |
4180 | name + 4) == 0); |
4181 | ||
4182 | sreloc = bfd_get_section_by_name (dynobj, name); | |
4183 | if (sreloc == NULL) | |
4184 | { | |
4185 | flagword flags; | |
4186 | ||
4187 | sreloc = bfd_make_section (dynobj, name); | |
4188 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
4189 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
e5a52504 MM |
4190 | if ((sec->flags & SEC_ALLOC) != 0 |
4191 | /* BPABI objects never have dynamic | |
4192 | relocations mapped. */ | |
4193 | && !htab->symbian_p) | |
252b5132 RH |
4194 | flags |= SEC_ALLOC | SEC_LOAD; |
4195 | if (sreloc == NULL | |
4196 | || ! bfd_set_section_flags (dynobj, sreloc, flags) | |
4197 | || ! bfd_set_section_alignment (dynobj, sreloc, 2)) | |
b34976b6 | 4198 | return FALSE; |
252b5132 | 4199 | } |
5e681ec4 PB |
4200 | |
4201 | elf_section_data (sec)->sreloc = sreloc; | |
252b5132 RH |
4202 | } |
4203 | ||
5e681ec4 PB |
4204 | /* If this is a global symbol, we count the number of |
4205 | relocations we need for this symbol. */ | |
4206 | if (h != NULL) | |
252b5132 | 4207 | { |
5e681ec4 PB |
4208 | head = &((struct elf32_arm_link_hash_entry *) h)->relocs_copied; |
4209 | } | |
4210 | else | |
4211 | { | |
4212 | /* Track dynamic relocs needed for local syms too. | |
4213 | We really need local syms available to do this | |
4214 | easily. Oh well. */ | |
57e8b36a | 4215 | |
5e681ec4 PB |
4216 | asection *s; |
4217 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
4218 | sec, r_symndx); | |
4219 | if (s == NULL) | |
4220 | return FALSE; | |
57e8b36a | 4221 | |
5e681ec4 PB |
4222 | head = ((struct elf32_arm_relocs_copied **) |
4223 | &elf_section_data (s)->local_dynrel); | |
4224 | } | |
57e8b36a | 4225 | |
5e681ec4 PB |
4226 | p = *head; |
4227 | if (p == NULL || p->section != sec) | |
4228 | { | |
4229 | bfd_size_type amt = sizeof *p; | |
57e8b36a | 4230 | |
5e681ec4 | 4231 | p = bfd_alloc (htab->root.dynobj, amt); |
252b5132 | 4232 | if (p == NULL) |
5e681ec4 PB |
4233 | return FALSE; |
4234 | p->next = *head; | |
4235 | *head = p; | |
4236 | p->section = sec; | |
4237 | p->count = 0; | |
252b5132 | 4238 | } |
57e8b36a | 4239 | |
eb043451 | 4240 | if (r_type == R_ARM_ABS32 |
eb043451 | 4241 | || r_type == R_ARM_REL32) |
7359ea65 | 4242 | p->count += 1; |
252b5132 RH |
4243 | } |
4244 | break; | |
4245 | ||
4246 | /* This relocation describes the C++ object vtable hierarchy. | |
4247 | Reconstruct it for later use during GC. */ | |
4248 | case R_ARM_GNU_VTINHERIT: | |
c152c796 | 4249 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 4250 | return FALSE; |
252b5132 | 4251 | break; |
9a5aca8c | 4252 | |
252b5132 RH |
4253 | /* This relocation describes which C++ vtable entries are actually |
4254 | used. Record for later use during GC. */ | |
4255 | case R_ARM_GNU_VTENTRY: | |
c152c796 | 4256 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) |
b34976b6 | 4257 | return FALSE; |
252b5132 RH |
4258 | break; |
4259 | } | |
4260 | } | |
f21f3fe0 | 4261 | |
b34976b6 | 4262 | return TRUE; |
252b5132 RH |
4263 | } |
4264 | ||
b34976b6 | 4265 | static bfd_boolean |
0367ecfb | 4266 | is_arm_mapping_symbol_name (const char * name) |
252b5132 | 4267 | { |
0367ecfb NC |
4268 | return (name != NULL) |
4269 | && (name[0] == '$') | |
4270 | && ((name[1] == 'a') || (name[1] == 't') || (name[1] == 'd')) | |
4271 | && (name[2] == 0); | |
4272 | } | |
f21f3fe0 | 4273 | |
3c9458e9 NC |
4274 | /* Treat mapping symbols as special target symbols. */ |
4275 | ||
4276 | static bfd_boolean | |
4277 | elf32_arm_is_target_special_symbol (bfd * abfd ATTRIBUTE_UNUSED, asymbol * sym) | |
4278 | { | |
4279 | return is_arm_mapping_symbol_name (sym->name); | |
4280 | } | |
4281 | ||
0367ecfb NC |
4282 | /* This is a copy of elf_find_function() from elf.c except that |
4283 | ARM mapping symbols are ignored when looking for function names | |
4284 | and STT_ARM_TFUNC is considered to a function type. */ | |
252b5132 | 4285 | |
0367ecfb NC |
4286 | static bfd_boolean |
4287 | arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED, | |
4288 | asection * section, | |
4289 | asymbol ** symbols, | |
4290 | bfd_vma offset, | |
4291 | const char ** filename_ptr, | |
4292 | const char ** functionname_ptr) | |
4293 | { | |
4294 | const char * filename = NULL; | |
4295 | asymbol * func = NULL; | |
4296 | bfd_vma low_func = 0; | |
4297 | asymbol ** p; | |
252b5132 RH |
4298 | |
4299 | for (p = symbols; *p != NULL; p++) | |
4300 | { | |
4301 | elf_symbol_type *q; | |
4302 | ||
4303 | q = (elf_symbol_type *) *p; | |
4304 | ||
252b5132 RH |
4305 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) |
4306 | { | |
4307 | default: | |
4308 | break; | |
4309 | case STT_FILE: | |
4310 | filename = bfd_asymbol_name (&q->symbol); | |
4311 | break; | |
252b5132 RH |
4312 | case STT_FUNC: |
4313 | case STT_ARM_TFUNC: | |
0367ecfb NC |
4314 | /* Skip $a and $t symbols. */ |
4315 | if ((q->symbol.flags & BSF_LOCAL) | |
4316 | && is_arm_mapping_symbol_name (q->symbol.name)) | |
4317 | continue; | |
4318 | /* Fall through. */ | |
4319 | case STT_NOTYPE: | |
6b40fcba | 4320 | if (bfd_get_section (&q->symbol) == section |
252b5132 RH |
4321 | && q->symbol.value >= low_func |
4322 | && q->symbol.value <= offset) | |
4323 | { | |
4324 | func = (asymbol *) q; | |
4325 | low_func = q->symbol.value; | |
4326 | } | |
4327 | break; | |
4328 | } | |
4329 | } | |
4330 | ||
4331 | if (func == NULL) | |
b34976b6 | 4332 | return FALSE; |
252b5132 | 4333 | |
0367ecfb NC |
4334 | if (filename_ptr) |
4335 | *filename_ptr = filename; | |
4336 | if (functionname_ptr) | |
4337 | *functionname_ptr = bfd_asymbol_name (func); | |
4338 | ||
4339 | return TRUE; | |
4340 | } | |
4341 | ||
4342 | ||
4343 | /* Find the nearest line to a particular section and offset, for error | |
4344 | reporting. This code is a duplicate of the code in elf.c, except | |
4345 | that it uses arm_elf_find_function. */ | |
4346 | ||
4347 | static bfd_boolean | |
4348 | elf32_arm_find_nearest_line (bfd * abfd, | |
4349 | asection * section, | |
4350 | asymbol ** symbols, | |
4351 | bfd_vma offset, | |
4352 | const char ** filename_ptr, | |
4353 | const char ** functionname_ptr, | |
4354 | unsigned int * line_ptr) | |
4355 | { | |
4356 | bfd_boolean found = FALSE; | |
4357 | ||
4358 | /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */ | |
4359 | ||
4360 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
4361 | filename_ptr, functionname_ptr, | |
4362 | line_ptr, 0, | |
4363 | & elf_tdata (abfd)->dwarf2_find_line_info)) | |
4364 | { | |
4365 | if (!*functionname_ptr) | |
4366 | arm_elf_find_function (abfd, section, symbols, offset, | |
4367 | *filename_ptr ? NULL : filename_ptr, | |
4368 | functionname_ptr); | |
f21f3fe0 | 4369 | |
0367ecfb NC |
4370 | return TRUE; |
4371 | } | |
4372 | ||
4373 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
4374 | & found, filename_ptr, | |
4375 | functionname_ptr, line_ptr, | |
4376 | & elf_tdata (abfd)->line_info)) | |
4377 | return FALSE; | |
4378 | ||
4379 | if (found && (*functionname_ptr || *line_ptr)) | |
4380 | return TRUE; | |
4381 | ||
4382 | if (symbols == NULL) | |
4383 | return FALSE; | |
4384 | ||
4385 | if (! arm_elf_find_function (abfd, section, symbols, offset, | |
4386 | filename_ptr, functionname_ptr)) | |
4387 | return FALSE; | |
4388 | ||
4389 | *line_ptr = 0; | |
b34976b6 | 4390 | return TRUE; |
252b5132 RH |
4391 | } |
4392 | ||
4393 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
4394 | regular object. The current definition is in some section of the | |
4395 | dynamic object, but we're not including those sections. We have to | |
4396 | change the definition to something the rest of the link can | |
4397 | understand. */ | |
4398 | ||
b34976b6 | 4399 | static bfd_boolean |
57e8b36a NC |
4400 | elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info, |
4401 | struct elf_link_hash_entry * h) | |
252b5132 RH |
4402 | { |
4403 | bfd * dynobj; | |
4404 | asection * s; | |
4405 | unsigned int power_of_two; | |
b7693d02 | 4406 | struct elf32_arm_link_hash_entry * eh; |
252b5132 RH |
4407 | |
4408 | dynobj = elf_hash_table (info)->dynobj; | |
4409 | ||
4410 | /* Make sure we know what is going on here. */ | |
4411 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 4412 | && (h->needs_plt |
f6e332e6 | 4413 | || h->u.weakdef != NULL |
f5385ebf AM |
4414 | || (h->def_dynamic |
4415 | && h->ref_regular | |
4416 | && !h->def_regular))); | |
252b5132 | 4417 | |
b7693d02 DJ |
4418 | eh = (struct elf32_arm_link_hash_entry *) h; |
4419 | ||
252b5132 RH |
4420 | /* If this is a function, put it in the procedure linkage table. We |
4421 | will fill in the contents of the procedure linkage table later, | |
4422 | when we know the address of the .got section. */ | |
b7693d02 | 4423 | if (h->type == STT_FUNC || h->type == STT_ARM_TFUNC |
f5385ebf | 4424 | || h->needs_plt) |
252b5132 | 4425 | { |
5e681ec4 PB |
4426 | if (h->plt.refcount <= 0 |
4427 | || SYMBOL_CALLS_LOCAL (info, h) | |
4428 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
4429 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
4430 | { |
4431 | /* This case can occur if we saw a PLT32 reloc in an input | |
5e681ec4 PB |
4432 | file, but the symbol was never referred to by a dynamic |
4433 | object, or if all references were garbage collected. In | |
4434 | such a case, we don't actually need to build a procedure | |
4435 | linkage table, and we can just do a PC24 reloc instead. */ | |
4436 | h->plt.offset = (bfd_vma) -1; | |
b7693d02 | 4437 | eh->plt_thumb_refcount = 0; |
f5385ebf | 4438 | h->needs_plt = 0; |
252b5132 RH |
4439 | } |
4440 | ||
b34976b6 | 4441 | return TRUE; |
252b5132 | 4442 | } |
5e681ec4 | 4443 | else |
b7693d02 DJ |
4444 | { |
4445 | /* It's possible that we incorrectly decided a .plt reloc was | |
4446 | needed for an R_ARM_PC24 or similar reloc to a non-function sym | |
4447 | in check_relocs. We can't decide accurately between function | |
4448 | and non-function syms in check-relocs; Objects loaded later in | |
4449 | the link may change h->type. So fix it now. */ | |
4450 | h->plt.offset = (bfd_vma) -1; | |
4451 | eh->plt_thumb_refcount = 0; | |
4452 | } | |
252b5132 RH |
4453 | |
4454 | /* If this is a weak symbol, and there is a real definition, the | |
4455 | processor independent code will have arranged for us to see the | |
4456 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 4457 | if (h->u.weakdef != NULL) |
252b5132 | 4458 | { |
f6e332e6 AM |
4459 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
4460 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
4461 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
4462 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 4463 | return TRUE; |
252b5132 RH |
4464 | } |
4465 | ||
4466 | /* This is a reference to a symbol defined by a dynamic object which | |
4467 | is not a function. */ | |
4468 | ||
4469 | /* If we are creating a shared library, we must presume that the | |
4470 | only references to the symbol are via the global offset table. | |
4471 | For such cases we need not do anything here; the relocations will | |
4472 | be handled correctly by relocate_section. */ | |
4473 | if (info->shared) | |
b34976b6 | 4474 | return TRUE; |
252b5132 RH |
4475 | |
4476 | /* We must allocate the symbol in our .dynbss section, which will | |
4477 | become part of the .bss section of the executable. There will be | |
4478 | an entry for this symbol in the .dynsym section. The dynamic | |
4479 | object will contain position independent code, so all references | |
4480 | from the dynamic object to this symbol will go through the global | |
4481 | offset table. The dynamic linker will use the .dynsym entry to | |
4482 | determine the address it must put in the global offset table, so | |
4483 | both the dynamic object and the regular object will refer to the | |
4484 | same memory location for the variable. */ | |
252b5132 RH |
4485 | s = bfd_get_section_by_name (dynobj, ".dynbss"); |
4486 | BFD_ASSERT (s != NULL); | |
4487 | ||
4488 | /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to | |
4489 | copy the initial value out of the dynamic object and into the | |
4490 | runtime process image. We need to remember the offset into the | |
4491 | .rel.bss section we are going to use. */ | |
4492 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
4493 | { | |
4494 | asection *srel; | |
4495 | ||
4496 | srel = bfd_get_section_by_name (dynobj, ".rel.bss"); | |
4497 | BFD_ASSERT (srel != NULL); | |
eea6121a | 4498 | srel->size += sizeof (Elf32_External_Rel); |
f5385ebf | 4499 | h->needs_copy = 1; |
252b5132 RH |
4500 | } |
4501 | ||
4502 | /* We need to figure out the alignment required for this symbol. I | |
4503 | have no idea how ELF linkers handle this. */ | |
4504 | power_of_two = bfd_log2 (h->size); | |
4505 | if (power_of_two > 3) | |
4506 | power_of_two = 3; | |
4507 | ||
4508 | /* Apply the required alignment. */ | |
eea6121a | 4509 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
252b5132 RH |
4510 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) |
4511 | { | |
4512 | if (! bfd_set_section_alignment (dynobj, s, power_of_two)) | |
b34976b6 | 4513 | return FALSE; |
252b5132 RH |
4514 | } |
4515 | ||
4516 | /* Define the symbol as being at this point in the section. */ | |
4517 | h->root.u.def.section = s; | |
eea6121a | 4518 | h->root.u.def.value = s->size; |
252b5132 RH |
4519 | |
4520 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 4521 | s->size += h->size; |
252b5132 | 4522 | |
b34976b6 | 4523 | return TRUE; |
252b5132 RH |
4524 | } |
4525 | ||
5e681ec4 PB |
4526 | /* Allocate space in .plt, .got and associated reloc sections for |
4527 | dynamic relocs. */ | |
4528 | ||
4529 | static bfd_boolean | |
57e8b36a | 4530 | allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
5e681ec4 PB |
4531 | { |
4532 | struct bfd_link_info *info; | |
4533 | struct elf32_arm_link_hash_table *htab; | |
4534 | struct elf32_arm_link_hash_entry *eh; | |
4535 | struct elf32_arm_relocs_copied *p; | |
4536 | ||
b7693d02 DJ |
4537 | eh = (struct elf32_arm_link_hash_entry *) h; |
4538 | ||
5e681ec4 PB |
4539 | if (h->root.type == bfd_link_hash_indirect) |
4540 | return TRUE; | |
4541 | ||
4542 | if (h->root.type == bfd_link_hash_warning) | |
4543 | /* When warning symbols are created, they **replace** the "real" | |
4544 | entry in the hash table, thus we never get to see the real | |
4545 | symbol in a hash traversal. So look at it now. */ | |
4546 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4547 | ||
4548 | info = (struct bfd_link_info *) inf; | |
4549 | htab = elf32_arm_hash_table (info); | |
4550 | ||
4551 | if (htab->root.dynamic_sections_created | |
4552 | && h->plt.refcount > 0) | |
4553 | { | |
4554 | /* Make sure this symbol is output as a dynamic symbol. | |
4555 | Undefined weak syms won't yet be marked as dynamic. */ | |
4556 | if (h->dynindx == -1 | |
f5385ebf | 4557 | && !h->forced_local) |
5e681ec4 | 4558 | { |
c152c796 | 4559 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
4560 | return FALSE; |
4561 | } | |
4562 | ||
4563 | if (info->shared | |
7359ea65 | 4564 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
5e681ec4 PB |
4565 | { |
4566 | asection *s = htab->splt; | |
4567 | ||
4568 | /* If this is the first .plt entry, make room for the special | |
4569 | first entry. */ | |
eea6121a | 4570 | if (s->size == 0) |
e5a52504 | 4571 | s->size += htab->plt_header_size; |
5e681ec4 | 4572 | |
eea6121a | 4573 | h->plt.offset = s->size; |
5e681ec4 | 4574 | |
b7693d02 DJ |
4575 | /* If we will insert a Thumb trampoline before this PLT, leave room |
4576 | for it. */ | |
4577 | if (!htab->symbian_p && eh->plt_thumb_refcount > 0) | |
4578 | { | |
4579 | h->plt.offset += PLT_THUMB_STUB_SIZE; | |
4580 | s->size += PLT_THUMB_STUB_SIZE; | |
4581 | } | |
4582 | ||
5e681ec4 PB |
4583 | /* If this symbol is not defined in a regular file, and we are |
4584 | not generating a shared library, then set the symbol to this | |
4585 | location in the .plt. This is required to make function | |
4586 | pointers compare as equal between the normal executable and | |
4587 | the shared library. */ | |
4588 | if (! info->shared | |
f5385ebf | 4589 | && !h->def_regular) |
5e681ec4 PB |
4590 | { |
4591 | h->root.u.def.section = s; | |
4592 | h->root.u.def.value = h->plt.offset; | |
b7693d02 DJ |
4593 | |
4594 | /* Make sure the function is not marked as Thumb, in case | |
4595 | it is the target of an ABS32 relocation, which will | |
4596 | point to the PLT entry. */ | |
4597 | if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC) | |
4598 | h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC); | |
5e681ec4 PB |
4599 | } |
4600 | ||
4601 | /* Make room for this entry. */ | |
e5a52504 | 4602 | s->size += htab->plt_entry_size; |
5e681ec4 | 4603 | |
e5a52504 | 4604 | if (!htab->symbian_p) |
b7693d02 DJ |
4605 | { |
4606 | /* We also need to make an entry in the .got.plt section, which | |
4607 | will be placed in the .got section by the linker script. */ | |
4608 | eh->plt_got_offset = htab->sgotplt->size; | |
4609 | htab->sgotplt->size += 4; | |
4610 | } | |
5e681ec4 PB |
4611 | |
4612 | /* We also need to make an entry in the .rel.plt section. */ | |
eea6121a | 4613 | htab->srelplt->size += sizeof (Elf32_External_Rel); |
5e681ec4 PB |
4614 | } |
4615 | else | |
4616 | { | |
4617 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 4618 | h->needs_plt = 0; |
5e681ec4 PB |
4619 | } |
4620 | } | |
4621 | else | |
4622 | { | |
4623 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 4624 | h->needs_plt = 0; |
5e681ec4 PB |
4625 | } |
4626 | ||
4627 | if (h->got.refcount > 0) | |
4628 | { | |
4629 | asection *s; | |
4630 | bfd_boolean dyn; | |
4631 | ||
4632 | /* Make sure this symbol is output as a dynamic symbol. | |
4633 | Undefined weak syms won't yet be marked as dynamic. */ | |
4634 | if (h->dynindx == -1 | |
f5385ebf | 4635 | && !h->forced_local) |
5e681ec4 | 4636 | { |
c152c796 | 4637 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
4638 | return FALSE; |
4639 | } | |
4640 | ||
e5a52504 MM |
4641 | if (!htab->symbian_p) |
4642 | { | |
4643 | s = htab->sgot; | |
4644 | h->got.offset = s->size; | |
4645 | s->size += 4; | |
4646 | dyn = htab->root.dynamic_sections_created; | |
4647 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
4648 | || h->root.type != bfd_link_hash_undefweak) | |
4649 | && (info->shared | |
4650 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
4651 | htab->srelgot->size += sizeof (Elf32_External_Rel); | |
4652 | } | |
5e681ec4 PB |
4653 | } |
4654 | else | |
4655 | h->got.offset = (bfd_vma) -1; | |
4656 | ||
5e681ec4 PB |
4657 | if (eh->relocs_copied == NULL) |
4658 | return TRUE; | |
4659 | ||
4660 | /* In the shared -Bsymbolic case, discard space allocated for | |
4661 | dynamic pc-relative relocs against symbols which turn out to be | |
4662 | defined in regular objects. For the normal shared case, discard | |
4663 | space for pc-relative relocs that have become local due to symbol | |
4664 | visibility changes. */ | |
4665 | ||
4666 | if (info->shared) | |
4667 | { | |
7359ea65 DJ |
4668 | /* Discard relocs on undefined weak syms with non-default |
4669 | visibility. */ | |
5e681ec4 PB |
4670 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
4671 | && h->root.type == bfd_link_hash_undefweak) | |
4672 | eh->relocs_copied = NULL; | |
4673 | } | |
4674 | else | |
4675 | { | |
4676 | /* For the non-shared case, discard space for relocs against | |
4677 | symbols which turn out to need copy relocs or are not | |
4678 | dynamic. */ | |
4679 | ||
f5385ebf AM |
4680 | if (!h->non_got_ref |
4681 | && ((h->def_dynamic | |
4682 | && !h->def_regular) | |
5e681ec4 PB |
4683 | || (htab->root.dynamic_sections_created |
4684 | && (h->root.type == bfd_link_hash_undefweak | |
4685 | || h->root.type == bfd_link_hash_undefined)))) | |
4686 | { | |
4687 | /* Make sure this symbol is output as a dynamic symbol. | |
4688 | Undefined weak syms won't yet be marked as dynamic. */ | |
4689 | if (h->dynindx == -1 | |
f5385ebf | 4690 | && !h->forced_local) |
5e681ec4 | 4691 | { |
c152c796 | 4692 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
4693 | return FALSE; |
4694 | } | |
4695 | ||
4696 | /* If that succeeded, we know we'll be keeping all the | |
4697 | relocs. */ | |
4698 | if (h->dynindx != -1) | |
4699 | goto keep; | |
4700 | } | |
4701 | ||
4702 | eh->relocs_copied = NULL; | |
4703 | ||
4704 | keep: ; | |
4705 | } | |
4706 | ||
4707 | /* Finally, allocate space. */ | |
4708 | for (p = eh->relocs_copied; p != NULL; p = p->next) | |
4709 | { | |
4710 | asection *sreloc = elf_section_data (p->section)->sreloc; | |
eea6121a | 4711 | sreloc->size += p->count * sizeof (Elf32_External_Rel); |
5e681ec4 PB |
4712 | } |
4713 | ||
4714 | return TRUE; | |
4715 | } | |
4716 | ||
08d1f311 DJ |
4717 | /* Find any dynamic relocs that apply to read-only sections. */ |
4718 | ||
4719 | static bfd_boolean | |
4720 | elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry *h, PTR inf) | |
4721 | { | |
4722 | struct elf32_arm_link_hash_entry *eh; | |
4723 | struct elf32_arm_relocs_copied *p; | |
4724 | ||
4725 | if (h->root.type == bfd_link_hash_warning) | |
4726 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4727 | ||
4728 | eh = (struct elf32_arm_link_hash_entry *) h; | |
4729 | for (p = eh->relocs_copied; p != NULL; p = p->next) | |
4730 | { | |
4731 | asection *s = p->section; | |
4732 | ||
4733 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
4734 | { | |
4735 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
4736 | ||
4737 | info->flags |= DF_TEXTREL; | |
4738 | ||
4739 | /* Not an error, just cut short the traversal. */ | |
4740 | return FALSE; | |
4741 | } | |
4742 | } | |
4743 | return TRUE; | |
4744 | } | |
4745 | ||
252b5132 RH |
4746 | /* Set the sizes of the dynamic sections. */ |
4747 | ||
b34976b6 | 4748 | static bfd_boolean |
57e8b36a NC |
4749 | elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED, |
4750 | struct bfd_link_info * info) | |
252b5132 RH |
4751 | { |
4752 | bfd * dynobj; | |
4753 | asection * s; | |
b34976b6 AM |
4754 | bfd_boolean plt; |
4755 | bfd_boolean relocs; | |
5e681ec4 PB |
4756 | bfd *ibfd; |
4757 | struct elf32_arm_link_hash_table *htab; | |
252b5132 | 4758 | |
5e681ec4 | 4759 | htab = elf32_arm_hash_table (info); |
252b5132 RH |
4760 | dynobj = elf_hash_table (info)->dynobj; |
4761 | BFD_ASSERT (dynobj != NULL); | |
4762 | ||
4763 | if (elf_hash_table (info)->dynamic_sections_created) | |
4764 | { | |
4765 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 4766 | if (info->executable) |
252b5132 RH |
4767 | { |
4768 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
4769 | BFD_ASSERT (s != NULL); | |
eea6121a | 4770 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
252b5132 RH |
4771 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
4772 | } | |
4773 | } | |
5e681ec4 PB |
4774 | |
4775 | /* Set up .got offsets for local syms, and space for local dynamic | |
4776 | relocs. */ | |
4777 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
252b5132 | 4778 | { |
5e681ec4 PB |
4779 | bfd_signed_vma *local_got; |
4780 | bfd_signed_vma *end_local_got; | |
4781 | char *local_tls_type; | |
4782 | bfd_size_type locsymcount; | |
4783 | Elf_Internal_Shdr *symtab_hdr; | |
4784 | asection *srel; | |
4785 | ||
4786 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) | |
4787 | continue; | |
4788 | ||
4789 | for (s = ibfd->sections; s != NULL; s = s->next) | |
4790 | { | |
4791 | struct elf32_arm_relocs_copied *p; | |
4792 | ||
4793 | for (p = *((struct elf32_arm_relocs_copied **) | |
4794 | &elf_section_data (s)->local_dynrel); | |
4795 | p != NULL; | |
4796 | p = p->next) | |
4797 | { | |
4798 | if (!bfd_is_abs_section (p->section) | |
4799 | && bfd_is_abs_section (p->section->output_section)) | |
4800 | { | |
4801 | /* Input section has been discarded, either because | |
4802 | it is a copy of a linkonce section or due to | |
4803 | linker script /DISCARD/, so we'll be discarding | |
4804 | the relocs too. */ | |
4805 | } | |
4806 | else if (p->count != 0) | |
4807 | { | |
4808 | srel = elf_section_data (p->section)->sreloc; | |
eea6121a | 4809 | srel->size += p->count * sizeof (Elf32_External_Rel); |
5e681ec4 PB |
4810 | if ((p->section->output_section->flags & SEC_READONLY) != 0) |
4811 | info->flags |= DF_TEXTREL; | |
4812 | } | |
4813 | } | |
4814 | } | |
4815 | ||
4816 | local_got = elf_local_got_refcounts (ibfd); | |
4817 | if (!local_got) | |
4818 | continue; | |
4819 | ||
4820 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
4821 | locsymcount = symtab_hdr->sh_info; | |
4822 | end_local_got = local_got + locsymcount; | |
4823 | s = htab->sgot; | |
4824 | srel = htab->srelgot; | |
4825 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) | |
4826 | { | |
4827 | if (*local_got > 0) | |
4828 | { | |
eea6121a AM |
4829 | *local_got = s->size; |
4830 | s->size += 4; | |
5e681ec4 | 4831 | if (info->shared) |
eea6121a | 4832 | srel->size += sizeof (Elf32_External_Rel); |
5e681ec4 PB |
4833 | } |
4834 | else | |
4835 | *local_got = (bfd_vma) -1; | |
4836 | } | |
252b5132 RH |
4837 | } |
4838 | ||
5e681ec4 PB |
4839 | /* Allocate global sym .plt and .got entries, and space for global |
4840 | sym dynamic relocs. */ | |
57e8b36a | 4841 | elf_link_hash_traverse (& htab->root, allocate_dynrelocs, info); |
252b5132 RH |
4842 | |
4843 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
4844 | determined the sizes of the various dynamic sections. Allocate | |
4845 | memory for them. */ | |
b34976b6 AM |
4846 | plt = FALSE; |
4847 | relocs = FALSE; | |
252b5132 RH |
4848 | for (s = dynobj->sections; s != NULL; s = s->next) |
4849 | { | |
4850 | const char * name; | |
b34976b6 | 4851 | bfd_boolean strip; |
252b5132 RH |
4852 | |
4853 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
4854 | continue; | |
4855 | ||
4856 | /* It's OK to base decisions on the section name, because none | |
4857 | of the dynobj section names depend upon the input files. */ | |
4858 | name = bfd_get_section_name (dynobj, s); | |
4859 | ||
b34976b6 | 4860 | strip = FALSE; |
252b5132 | 4861 | |
24a1ba0f | 4862 | if (strcmp (name, ".plt") == 0) |
252b5132 | 4863 | { |
eea6121a | 4864 | if (s->size == 0) |
252b5132 RH |
4865 | { |
4866 | /* Strip this section if we don't need it; see the | |
4867 | comment below. */ | |
b34976b6 | 4868 | strip = TRUE; |
252b5132 RH |
4869 | } |
4870 | else | |
4871 | { | |
4872 | /* Remember whether there is a PLT. */ | |
b34976b6 | 4873 | plt = TRUE; |
252b5132 RH |
4874 | } |
4875 | } | |
4876 | else if (strncmp (name, ".rel", 4) == 0) | |
4877 | { | |
eea6121a | 4878 | if (s->size == 0) |
252b5132 RH |
4879 | { |
4880 | /* If we don't need this section, strip it from the | |
4881 | output file. This is mostly to handle .rel.bss and | |
4882 | .rel.plt. We must create both sections in | |
4883 | create_dynamic_sections, because they must be created | |
4884 | before the linker maps input sections to output | |
4885 | sections. The linker does that before | |
4886 | adjust_dynamic_symbol is called, and it is that | |
4887 | function which decides whether anything needs to go | |
4888 | into these sections. */ | |
b34976b6 | 4889 | strip = TRUE; |
252b5132 RH |
4890 | } |
4891 | else | |
4892 | { | |
252b5132 RH |
4893 | /* Remember whether there are any reloc sections other |
4894 | than .rel.plt. */ | |
4895 | if (strcmp (name, ".rel.plt") != 0) | |
b34976b6 | 4896 | relocs = TRUE; |
252b5132 RH |
4897 | |
4898 | /* We use the reloc_count field as a counter if we need | |
4899 | to copy relocs into the output file. */ | |
4900 | s->reloc_count = 0; | |
4901 | } | |
4902 | } | |
4903 | else if (strncmp (name, ".got", 4) != 0) | |
4904 | { | |
4905 | /* It's not one of our sections, so don't allocate space. */ | |
4906 | continue; | |
4907 | } | |
4908 | ||
4909 | if (strip) | |
4910 | { | |
52585bb8 | 4911 | _bfd_strip_section_from_output (info, s); |
252b5132 RH |
4912 | continue; |
4913 | } | |
4914 | ||
4915 | /* Allocate memory for the section contents. */ | |
eea6121a AM |
4916 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
4917 | if (s->contents == NULL && s->size != 0) | |
b34976b6 | 4918 | return FALSE; |
252b5132 RH |
4919 | } |
4920 | ||
4921 | if (elf_hash_table (info)->dynamic_sections_created) | |
4922 | { | |
4923 | /* Add some entries to the .dynamic section. We fill in the | |
4924 | values later, in elf32_arm_finish_dynamic_sections, but we | |
4925 | must add the entries now so that we get the correct size for | |
4926 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
4927 | dynamic linker and used by the debugger. */ | |
dc810e39 | 4928 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 4929 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 AM |
4930 | |
4931 | if (!info->shared) | |
252b5132 | 4932 | { |
dc810e39 | 4933 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 4934 | return FALSE; |
252b5132 RH |
4935 | } |
4936 | ||
4937 | if (plt) | |
4938 | { | |
dc810e39 AM |
4939 | if ( !add_dynamic_entry (DT_PLTGOT, 0) |
4940 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
4941 | || !add_dynamic_entry (DT_PLTREL, DT_REL) | |
4942 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 4943 | return FALSE; |
252b5132 RH |
4944 | } |
4945 | ||
4946 | if (relocs) | |
4947 | { | |
dc810e39 AM |
4948 | if ( !add_dynamic_entry (DT_REL, 0) |
4949 | || !add_dynamic_entry (DT_RELSZ, 0) | |
4950 | || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel))) | |
b34976b6 | 4951 | return FALSE; |
252b5132 RH |
4952 | } |
4953 | ||
08d1f311 DJ |
4954 | /* If any dynamic relocs apply to a read-only section, |
4955 | then we need a DT_TEXTREL entry. */ | |
4956 | if ((info->flags & DF_TEXTREL) == 0) | |
4957 | elf_link_hash_traverse (&htab->root, elf32_arm_readonly_dynrelocs, | |
4958 | (PTR) info); | |
4959 | ||
99e4ae17 | 4960 | if ((info->flags & DF_TEXTREL) != 0) |
252b5132 | 4961 | { |
dc810e39 | 4962 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 4963 | return FALSE; |
d6cf2879 | 4964 | info->flags |= DF_TEXTREL; |
252b5132 RH |
4965 | } |
4966 | } | |
dc810e39 | 4967 | #undef add_synamic_entry |
252b5132 | 4968 | |
b34976b6 | 4969 | return TRUE; |
252b5132 RH |
4970 | } |
4971 | ||
252b5132 RH |
4972 | /* Finish up dynamic symbol handling. We set the contents of various |
4973 | dynamic sections here. */ | |
4974 | ||
b34976b6 | 4975 | static bfd_boolean |
57e8b36a NC |
4976 | elf32_arm_finish_dynamic_symbol (bfd * output_bfd, struct bfd_link_info * info, |
4977 | struct elf_link_hash_entry * h, Elf_Internal_Sym * sym) | |
252b5132 RH |
4978 | { |
4979 | bfd * dynobj; | |
e5a52504 | 4980 | struct elf32_arm_link_hash_table *htab; |
b7693d02 | 4981 | struct elf32_arm_link_hash_entry *eh; |
252b5132 RH |
4982 | |
4983 | dynobj = elf_hash_table (info)->dynobj; | |
e5a52504 | 4984 | htab = elf32_arm_hash_table (info); |
b7693d02 | 4985 | eh = (struct elf32_arm_link_hash_entry *) h; |
252b5132 RH |
4986 | |
4987 | if (h->plt.offset != (bfd_vma) -1) | |
4988 | { | |
4989 | asection * splt; | |
252b5132 | 4990 | asection * srel; |
e5a52504 | 4991 | bfd_byte *loc; |
24a1ba0f | 4992 | bfd_vma plt_index; |
947216bf | 4993 | Elf_Internal_Rela rel; |
252b5132 RH |
4994 | |
4995 | /* This symbol has an entry in the procedure linkage table. Set | |
4996 | it up. */ | |
4997 | ||
4998 | BFD_ASSERT (h->dynindx != -1); | |
4999 | ||
5000 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
252b5132 | 5001 | srel = bfd_get_section_by_name (dynobj, ".rel.plt"); |
e5a52504 | 5002 | BFD_ASSERT (splt != NULL && srel != NULL); |
252b5132 | 5003 | |
e5a52504 MM |
5004 | /* Fill in the entry in the procedure linkage table. */ |
5005 | if (htab->symbian_p) | |
5006 | { | |
5007 | unsigned i; | |
5008 | for (i = 0; i < htab->plt_entry_size / 4; ++i) | |
5009 | bfd_put_32 (output_bfd, | |
5010 | elf32_arm_symbian_plt_entry[i], | |
5011 | splt->contents + h->plt.offset + 4 * i); | |
5012 | ||
5013 | /* Fill in the entry in the .rel.plt section. */ | |
2a1b9a48 MM |
5014 | rel.r_offset = (splt->output_section->vma |
5015 | + splt->output_offset | |
e5a52504 MM |
5016 | + h->plt.offset + 4 * (i - 1)); |
5017 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT); | |
b7693d02 DJ |
5018 | |
5019 | /* Get the index in the procedure linkage table which | |
5020 | corresponds to this symbol. This is the index of this symbol | |
5021 | in all the symbols for which we are making plt entries. The | |
5022 | first entry in the procedure linkage table is reserved. */ | |
5023 | plt_index = ((h->plt.offset - htab->plt_header_size) | |
5024 | / htab->plt_entry_size); | |
e5a52504 MM |
5025 | } |
5026 | else | |
5027 | { | |
5028 | bfd_vma got_offset; | |
5029 | bfd_vma got_displacement; | |
5030 | asection * sgot; | |
5031 | ||
5032 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
5033 | BFD_ASSERT (sgot != NULL); | |
5034 | ||
b7693d02 DJ |
5035 | /* Get the offset into the .got.plt table of the entry that |
5036 | corresponds to this function. */ | |
5037 | got_offset = eh->plt_got_offset; | |
5038 | ||
5039 | /* Get the index in the procedure linkage table which | |
5040 | corresponds to this symbol. This is the index of this symbol | |
5041 | in all the symbols for which we are making plt entries. The | |
5042 | first three entries in .got.plt are reserved; after that | |
5043 | symbols appear in the same order as in .plt. */ | |
5044 | plt_index = (got_offset - 12) / 4; | |
e5a52504 MM |
5045 | |
5046 | /* Calculate the displacement between the PLT slot and the | |
b7693d02 DJ |
5047 | entry in the GOT. The eight-byte offset accounts for the |
5048 | value produced by adding to pc in the first instruction | |
5049 | of the PLT stub. */ | |
e5a52504 MM |
5050 | got_displacement = (sgot->output_section->vma |
5051 | + sgot->output_offset | |
5052 | + got_offset | |
5053 | - splt->output_section->vma | |
5054 | - splt->output_offset | |
5055 | - h->plt.offset | |
5056 | - 8); | |
5e681ec4 | 5057 | |
e5a52504 | 5058 | BFD_ASSERT ((got_displacement & 0xf0000000) == 0); |
5e681ec4 | 5059 | |
b7693d02 DJ |
5060 | if (eh->plt_thumb_refcount > 0) |
5061 | { | |
5062 | bfd_put_16 (output_bfd, elf32_arm_plt_thumb_stub[0], | |
5063 | splt->contents + h->plt.offset - 4); | |
5064 | bfd_put_16 (output_bfd, elf32_arm_plt_thumb_stub[1], | |
5065 | splt->contents + h->plt.offset - 2); | |
5066 | } | |
5067 | ||
e5a52504 MM |
5068 | bfd_put_32 (output_bfd, elf32_arm_plt_entry[0] | ((got_displacement & 0x0ff00000) >> 20), |
5069 | splt->contents + h->plt.offset + 0); | |
5070 | bfd_put_32 (output_bfd, elf32_arm_plt_entry[1] | ((got_displacement & 0x000ff000) >> 12), | |
5071 | splt->contents + h->plt.offset + 4); | |
5072 | bfd_put_32 (output_bfd, elf32_arm_plt_entry[2] | (got_displacement & 0x00000fff), | |
5073 | splt->contents + h->plt.offset + 8); | |
5e681ec4 | 5074 | #ifdef FOUR_WORD_PLT |
e5a52504 MM |
5075 | bfd_put_32 (output_bfd, elf32_arm_plt_entry[3], |
5076 | splt->contents + h->plt.offset + 12); | |
5e681ec4 | 5077 | #endif |
252b5132 | 5078 | |
e5a52504 MM |
5079 | /* Fill in the entry in the global offset table. */ |
5080 | bfd_put_32 (output_bfd, | |
5081 | (splt->output_section->vma | |
5082 | + splt->output_offset), | |
5083 | sgot->contents + got_offset); | |
5084 | ||
5085 | /* Fill in the entry in the .rel.plt section. */ | |
5086 | rel.r_offset = (sgot->output_section->vma | |
5087 | + sgot->output_offset | |
5088 | + got_offset); | |
5089 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_JUMP_SLOT); | |
5090 | } | |
57e8b36a | 5091 | |
947216bf AM |
5092 | loc = srel->contents + plt_index * sizeof (Elf32_External_Rel); |
5093 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); | |
252b5132 | 5094 | |
f5385ebf | 5095 | if (!h->def_regular) |
252b5132 RH |
5096 | { |
5097 | /* Mark the symbol as undefined, rather than as defined in | |
5098 | the .plt section. Leave the value alone. */ | |
5099 | sym->st_shndx = SHN_UNDEF; | |
d982ba73 PB |
5100 | /* If the symbol is weak, we do need to clear the value. |
5101 | Otherwise, the PLT entry would provide a definition for | |
5102 | the symbol even if the symbol wasn't defined anywhere, | |
5103 | and so the symbol would never be NULL. */ | |
f5385ebf | 5104 | if (!h->ref_regular_nonweak) |
d982ba73 | 5105 | sym->st_value = 0; |
252b5132 RH |
5106 | } |
5107 | } | |
5108 | ||
5109 | if (h->got.offset != (bfd_vma) -1) | |
5110 | { | |
5111 | asection * sgot; | |
5112 | asection * srel; | |
947216bf AM |
5113 | Elf_Internal_Rela rel; |
5114 | bfd_byte *loc; | |
252b5132 RH |
5115 | |
5116 | /* This symbol has an entry in the global offset table. Set it | |
5117 | up. */ | |
252b5132 RH |
5118 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
5119 | srel = bfd_get_section_by_name (dynobj, ".rel.got"); | |
5120 | BFD_ASSERT (sgot != NULL && srel != NULL); | |
5121 | ||
5122 | rel.r_offset = (sgot->output_section->vma | |
5123 | + sgot->output_offset | |
dc810e39 | 5124 | + (h->got.offset &~ (bfd_vma) 1)); |
252b5132 | 5125 | |
5e681ec4 PB |
5126 | /* If this is a static link, or it is a -Bsymbolic link and the |
5127 | symbol is defined locally or was forced to be local because | |
5128 | of a version file, we just want to emit a RELATIVE reloc. | |
5129 | The entry in the global offset table will already have been | |
5130 | initialized in the relocate_section function. */ | |
252b5132 | 5131 | if (info->shared |
5e681ec4 PB |
5132 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
5133 | { | |
5134 | BFD_ASSERT((h->got.offset & 1) != 0); | |
5135 | rel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); | |
5136 | } | |
252b5132 RH |
5137 | else |
5138 | { | |
5e681ec4 | 5139 | BFD_ASSERT((h->got.offset & 1) == 0); |
252b5132 RH |
5140 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); |
5141 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT); | |
5142 | } | |
5143 | ||
947216bf AM |
5144 | loc = srel->contents + srel->reloc_count++ * sizeof (Elf32_External_Rel); |
5145 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); | |
252b5132 RH |
5146 | } |
5147 | ||
f5385ebf | 5148 | if (h->needs_copy) |
252b5132 RH |
5149 | { |
5150 | asection * s; | |
947216bf AM |
5151 | Elf_Internal_Rela rel; |
5152 | bfd_byte *loc; | |
252b5132 RH |
5153 | |
5154 | /* This symbol needs a copy reloc. Set it up. */ | |
252b5132 RH |
5155 | BFD_ASSERT (h->dynindx != -1 |
5156 | && (h->root.type == bfd_link_hash_defined | |
5157 | || h->root.type == bfd_link_hash_defweak)); | |
5158 | ||
5159 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
5160 | ".rel.bss"); | |
5161 | BFD_ASSERT (s != NULL); | |
5162 | ||
5163 | rel.r_offset = (h->root.u.def.value | |
5164 | + h->root.u.def.section->output_section->vma | |
5165 | + h->root.u.def.section->output_offset); | |
5166 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY); | |
947216bf AM |
5167 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rel); |
5168 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); | |
252b5132 RH |
5169 | } |
5170 | ||
5171 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
5172 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
5173 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
5174 | sym->st_shndx = SHN_ABS; | |
5175 | ||
b34976b6 | 5176 | return TRUE; |
252b5132 RH |
5177 | } |
5178 | ||
5179 | /* Finish up the dynamic sections. */ | |
5180 | ||
b34976b6 | 5181 | static bfd_boolean |
57e8b36a | 5182 | elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info) |
252b5132 RH |
5183 | { |
5184 | bfd * dynobj; | |
5185 | asection * sgot; | |
5186 | asection * sdyn; | |
5187 | ||
5188 | dynobj = elf_hash_table (info)->dynobj; | |
5189 | ||
5190 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
229fcec5 | 5191 | BFD_ASSERT (elf32_arm_hash_table (info)->symbian_p || sgot != NULL); |
252b5132 RH |
5192 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
5193 | ||
5194 | if (elf_hash_table (info)->dynamic_sections_created) | |
5195 | { | |
5196 | asection *splt; | |
5197 | Elf32_External_Dyn *dyncon, *dynconend; | |
229fcec5 | 5198 | struct elf32_arm_link_hash_table *htab; |
252b5132 | 5199 | |
229fcec5 | 5200 | htab = elf32_arm_hash_table (info); |
252b5132 | 5201 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
24a1ba0f | 5202 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
252b5132 RH |
5203 | |
5204 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 5205 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
9b485d32 | 5206 | |
252b5132 RH |
5207 | for (; dyncon < dynconend; dyncon++) |
5208 | { | |
5209 | Elf_Internal_Dyn dyn; | |
5210 | const char * name; | |
5211 | asection * s; | |
5212 | ||
5213 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
5214 | ||
5215 | switch (dyn.d_tag) | |
5216 | { | |
229fcec5 MM |
5217 | unsigned int type; |
5218 | ||
252b5132 RH |
5219 | default: |
5220 | break; | |
5221 | ||
229fcec5 MM |
5222 | case DT_HASH: |
5223 | name = ".hash"; | |
5224 | goto get_vma_if_bpabi; | |
5225 | case DT_STRTAB: | |
5226 | name = ".dynstr"; | |
5227 | goto get_vma_if_bpabi; | |
5228 | case DT_SYMTAB: | |
5229 | name = ".dynsym"; | |
5230 | goto get_vma_if_bpabi; | |
c0042f5d MM |
5231 | case DT_VERSYM: |
5232 | name = ".gnu.version"; | |
5233 | goto get_vma_if_bpabi; | |
5234 | case DT_VERDEF: | |
5235 | name = ".gnu.version_d"; | |
5236 | goto get_vma_if_bpabi; | |
5237 | case DT_VERNEED: | |
5238 | name = ".gnu.version_r"; | |
5239 | goto get_vma_if_bpabi; | |
5240 | ||
252b5132 RH |
5241 | case DT_PLTGOT: |
5242 | name = ".got"; | |
5243 | goto get_vma; | |
5244 | case DT_JMPREL: | |
5245 | name = ".rel.plt"; | |
5246 | get_vma: | |
5247 | s = bfd_get_section_by_name (output_bfd, name); | |
5248 | BFD_ASSERT (s != NULL); | |
229fcec5 MM |
5249 | if (!htab->symbian_p) |
5250 | dyn.d_un.d_ptr = s->vma; | |
5251 | else | |
5252 | /* In the BPABI, tags in the PT_DYNAMIC section point | |
5253 | at the file offset, not the memory address, for the | |
5254 | convenience of the post linker. */ | |
5255 | dyn.d_un.d_ptr = s->filepos; | |
252b5132 RH |
5256 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
5257 | break; | |
5258 | ||
229fcec5 MM |
5259 | get_vma_if_bpabi: |
5260 | if (htab->symbian_p) | |
5261 | goto get_vma; | |
5262 | break; | |
5263 | ||
252b5132 RH |
5264 | case DT_PLTRELSZ: |
5265 | s = bfd_get_section_by_name (output_bfd, ".rel.plt"); | |
5266 | BFD_ASSERT (s != NULL); | |
eea6121a | 5267 | dyn.d_un.d_val = s->size; |
252b5132 RH |
5268 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
5269 | break; | |
229fcec5 | 5270 | |
252b5132 | 5271 | case DT_RELSZ: |
229fcec5 MM |
5272 | if (!htab->symbian_p) |
5273 | { | |
5274 | /* My reading of the SVR4 ABI indicates that the | |
5275 | procedure linkage table relocs (DT_JMPREL) should be | |
5276 | included in the overall relocs (DT_REL). This is | |
5277 | what Solaris does. However, UnixWare can not handle | |
5278 | that case. Therefore, we override the DT_RELSZ entry | |
5279 | here to make it not include the JMPREL relocs. Since | |
5280 | the linker script arranges for .rel.plt to follow all | |
5281 | other relocation sections, we don't have to worry | |
5282 | about changing the DT_REL entry. */ | |
5283 | s = bfd_get_section_by_name (output_bfd, ".rel.plt"); | |
5284 | if (s != NULL) | |
5285 | dyn.d_un.d_val -= s->size; | |
5286 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
5287 | break; | |
5288 | } | |
5289 | /* Fall through */ | |
5290 | ||
5291 | case DT_REL: | |
5292 | case DT_RELA: | |
5293 | case DT_RELASZ: | |
5294 | /* In the BPABI, the DT_REL tag must point at the file | |
5295 | offset, not the VMA, of the first relocation | |
5296 | section. So, we use code similar to that in | |
5297 | elflink.c, but do not check for SHF_ALLOC on the | |
5298 | relcoation section, since relocations sections are | |
5299 | never allocated under the BPABI. The comments above | |
5300 | about Unixware notwithstanding, we include all of the | |
5301 | relocations here. */ | |
5302 | if (htab->symbian_p) | |
5303 | { | |
5304 | unsigned int i; | |
5305 | type = ((dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ) | |
5306 | ? SHT_REL : SHT_RELA); | |
5307 | dyn.d_un.d_val = 0; | |
5308 | for (i = 1; i < elf_numsections (output_bfd); i++) | |
5309 | { | |
5310 | Elf_Internal_Shdr *hdr | |
5311 | = elf_elfsections (output_bfd)[i]; | |
5312 | if (hdr->sh_type == type) | |
5313 | { | |
5314 | if (dyn.d_tag == DT_RELSZ | |
5315 | || dyn.d_tag == DT_RELASZ) | |
5316 | dyn.d_un.d_val += hdr->sh_size; | |
5317 | else if (dyn.d_un.d_val == 0 | |
5318 | || hdr->sh_offset < dyn.d_un.d_val) | |
5319 | dyn.d_un.d_val = hdr->sh_offset; | |
5320 | } | |
5321 | } | |
5322 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
5323 | } | |
252b5132 | 5324 | break; |
88f7bcd5 NC |
5325 | |
5326 | /* Set the bottom bit of DT_INIT/FINI if the | |
5327 | corresponding function is Thumb. */ | |
5328 | case DT_INIT: | |
5329 | name = info->init_function; | |
5330 | goto get_sym; | |
5331 | case DT_FINI: | |
5332 | name = info->fini_function; | |
5333 | get_sym: | |
5334 | /* If it wasn't set by elf_bfd_final_link | |
4cc11e76 | 5335 | then there is nothing to adjust. */ |
88f7bcd5 NC |
5336 | if (dyn.d_un.d_val != 0) |
5337 | { | |
5338 | struct elf_link_hash_entry * eh; | |
5339 | ||
5340 | eh = elf_link_hash_lookup (elf_hash_table (info), name, | |
b34976b6 | 5341 | FALSE, FALSE, TRUE); |
88f7bcd5 NC |
5342 | if (eh != (struct elf_link_hash_entry *) NULL |
5343 | && ELF_ST_TYPE (eh->type) == STT_ARM_TFUNC) | |
5344 | { | |
5345 | dyn.d_un.d_val |= 1; | |
b34976b6 | 5346 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
88f7bcd5 NC |
5347 | } |
5348 | } | |
5349 | break; | |
252b5132 RH |
5350 | } |
5351 | } | |
5352 | ||
24a1ba0f | 5353 | /* Fill in the first entry in the procedure linkage table. */ |
e5a52504 | 5354 | if (splt->size > 0 && elf32_arm_hash_table (info)->plt_header_size) |
f7a74f8c | 5355 | { |
5e681ec4 PB |
5356 | bfd_vma got_displacement; |
5357 | ||
5358 | /* Calculate the displacement between the PLT slot and &GOT[0]. */ | |
5359 | got_displacement = (sgot->output_section->vma | |
5360 | + sgot->output_offset | |
5361 | - splt->output_section->vma | |
5362 | - splt->output_offset | |
5363 | - 16); | |
5364 | ||
f7a74f8c NC |
5365 | bfd_put_32 (output_bfd, elf32_arm_plt0_entry[0], splt->contents + 0); |
5366 | bfd_put_32 (output_bfd, elf32_arm_plt0_entry[1], splt->contents + 4); | |
5367 | bfd_put_32 (output_bfd, elf32_arm_plt0_entry[2], splt->contents + 8); | |
5368 | bfd_put_32 (output_bfd, elf32_arm_plt0_entry[3], splt->contents + 12); | |
5e681ec4 PB |
5369 | #ifdef FOUR_WORD_PLT |
5370 | /* The displacement value goes in the otherwise-unused last word of | |
5371 | the second entry. */ | |
5372 | bfd_put_32 (output_bfd, got_displacement, splt->contents + 28); | |
5373 | #else | |
5374 | bfd_put_32 (output_bfd, got_displacement, splt->contents + 16); | |
5375 | #endif | |
f7a74f8c | 5376 | } |
252b5132 RH |
5377 | |
5378 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
5379 | really seem like the right value. */ | |
5380 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; | |
5381 | } | |
5382 | ||
5383 | /* Fill in the first three entries in the global offset table. */ | |
229fcec5 | 5384 | if (sgot) |
252b5132 | 5385 | { |
229fcec5 MM |
5386 | if (sgot->size > 0) |
5387 | { | |
5388 | if (sdyn == NULL) | |
5389 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
5390 | else | |
5391 | bfd_put_32 (output_bfd, | |
5392 | sdyn->output_section->vma + sdyn->output_offset, | |
5393 | sgot->contents); | |
5394 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
5395 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
5396 | } | |
252b5132 | 5397 | |
229fcec5 MM |
5398 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; |
5399 | } | |
252b5132 | 5400 | |
b34976b6 | 5401 | return TRUE; |
252b5132 RH |
5402 | } |
5403 | ||
ba96a88f | 5404 | static void |
57e8b36a | 5405 | elf32_arm_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED) |
ba96a88f | 5406 | { |
9b485d32 | 5407 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ |
e489d0ae | 5408 | struct elf32_arm_link_hash_table *globals; |
ba96a88f NC |
5409 | |
5410 | i_ehdrp = elf_elfheader (abfd); | |
5411 | ||
5412 | i_ehdrp->e_ident[EI_OSABI] = ARM_ELF_OS_ABI_VERSION; | |
5413 | i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION; | |
e489d0ae | 5414 | |
93204d3a PB |
5415 | if (link_info) |
5416 | { | |
5417 | globals = elf32_arm_hash_table (link_info); | |
5418 | if (globals->byteswap_code) | |
5419 | i_ehdrp->e_flags |= EF_ARM_BE8; | |
5420 | } | |
ba96a88f NC |
5421 | } |
5422 | ||
99e4ae17 | 5423 | static enum elf_reloc_type_class |
57e8b36a | 5424 | elf32_arm_reloc_type_class (const Elf_Internal_Rela *rela) |
99e4ae17 | 5425 | { |
f51e552e | 5426 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
99e4ae17 AJ |
5427 | { |
5428 | case R_ARM_RELATIVE: | |
5429 | return reloc_class_relative; | |
5430 | case R_ARM_JUMP_SLOT: | |
5431 | return reloc_class_plt; | |
5432 | case R_ARM_COPY: | |
5433 | return reloc_class_copy; | |
5434 | default: | |
5435 | return reloc_class_normal; | |
5436 | } | |
5437 | } | |
5438 | ||
e16bb312 NC |
5439 | /* Set the right machine number for an Arm ELF file. */ |
5440 | ||
5441 | static bfd_boolean | |
57e8b36a | 5442 | elf32_arm_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr) |
e16bb312 NC |
5443 | { |
5444 | if (hdr->sh_type == SHT_NOTE) | |
5445 | *flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
5446 | ||
5447 | return TRUE; | |
5448 | } | |
5449 | ||
e489d0ae | 5450 | static void |
57e8b36a | 5451 | elf32_arm_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) |
e16bb312 | 5452 | { |
5a6c6817 | 5453 | bfd_arm_update_notes (abfd, ARM_NOTE_SECTION); |
e16bb312 NC |
5454 | } |
5455 | ||
40a18ebd NC |
5456 | /* Return TRUE if this is an unwinding table entry. */ |
5457 | ||
5458 | static bfd_boolean | |
5459 | is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name) | |
5460 | { | |
5461 | size_t len1, len2; | |
5462 | ||
5463 | len1 = sizeof (ELF_STRING_ARM_unwind) - 1; | |
5464 | len2 = sizeof (ELF_STRING_ARM_unwind_once) - 1; | |
5465 | return (strncmp (name, ELF_STRING_ARM_unwind, len1) == 0 | |
5466 | || strncmp (name, ELF_STRING_ARM_unwind_once, len2) == 0); | |
5467 | } | |
5468 | ||
5469 | ||
5470 | /* Set the type and flags for an ARM section. We do this by | |
5471 | the section name, which is a hack, but ought to work. */ | |
5472 | ||
5473 | static bfd_boolean | |
5474 | elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec) | |
5475 | { | |
5476 | const char * name; | |
5477 | ||
5478 | name = bfd_get_section_name (abfd, sec); | |
5479 | ||
5480 | if (is_arm_elf_unwind_section_name (abfd, name)) | |
5481 | { | |
5482 | hdr->sh_type = SHT_ARM_EXIDX; | |
5483 | hdr->sh_flags |= SHF_LINK_ORDER; | |
5484 | } | |
5485 | return TRUE; | |
5486 | } | |
5487 | ||
5488 | /* Handle an ARM specific section when reading an object file. | |
5489 | This is called when elf.c finds a section with an unknown type. */ | |
5490 | ||
5491 | static bfd_boolean | |
5492 | elf32_arm_section_from_shdr (bfd *abfd, | |
5493 | Elf_Internal_Shdr * hdr, | |
5494 | const char *name) | |
5495 | { | |
5496 | /* There ought to be a place to keep ELF backend specific flags, but | |
5497 | at the moment there isn't one. We just keep track of the | |
5498 | sections by their name, instead. Fortunately, the ABI gives | |
5499 | names for all the ARM specific sections, so we will probably get | |
5500 | away with this. */ | |
5501 | switch (hdr->sh_type) | |
5502 | { | |
5503 | case SHT_ARM_EXIDX: | |
5504 | break; | |
5505 | ||
5506 | default: | |
5507 | return FALSE; | |
5508 | } | |
5509 | ||
5510 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) | |
5511 | return FALSE; | |
5512 | ||
5513 | return TRUE; | |
5514 | } | |
e489d0ae PB |
5515 | |
5516 | /* Called for each symbol. Builds a section map based on mapping symbols. | |
5517 | Does not alter any of the symbols. */ | |
5518 | ||
5519 | static bfd_boolean | |
5520 | elf32_arm_output_symbol_hook (struct bfd_link_info *info, | |
5521 | const char *name, | |
5522 | Elf_Internal_Sym *elfsym, | |
5523 | asection *input_sec, | |
5524 | struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) | |
5525 | { | |
5526 | int mapcount; | |
5527 | elf32_arm_section_map *map; | |
5528 | struct elf32_arm_link_hash_table *globals; | |
5529 | ||
5530 | /* Only do this on final link. */ | |
5531 | if (info->relocatable) | |
5532 | return TRUE; | |
5533 | ||
5534 | /* Only build a map if we need to byteswap code. */ | |
5535 | globals = elf32_arm_hash_table (info); | |
5536 | if (!globals->byteswap_code) | |
5537 | return TRUE; | |
5538 | ||
5539 | /* We only want mapping symbols. */ | |
0367ecfb | 5540 | if (! is_arm_mapping_symbol_name (name)) |
e489d0ae PB |
5541 | return TRUE; |
5542 | ||
5543 | mapcount = ++(elf32_arm_section_data (input_sec)->mapcount); | |
5544 | map = elf32_arm_section_data (input_sec)->map; | |
5545 | /* TODO: This may be inefficient, but we probably don't usually have many | |
5546 | mapping symbols per section. */ | |
5547 | map = bfd_realloc (map, mapcount * sizeof (elf32_arm_section_map)); | |
5548 | elf32_arm_section_data (input_sec)->map = map; | |
57e8b36a | 5549 | |
e489d0ae PB |
5550 | map[mapcount - 1].vma = elfsym->st_value; |
5551 | map[mapcount - 1].type = name[1]; | |
5552 | return TRUE; | |
5553 | } | |
5554 | ||
5555 | ||
5556 | /* Allocate target specific section data. */ | |
5557 | ||
5558 | static bfd_boolean | |
5559 | elf32_arm_new_section_hook (bfd *abfd, asection *sec) | |
5560 | { | |
5561 | struct _arm_elf_section_data *sdata; | |
5562 | bfd_size_type amt = sizeof (*sdata); | |
5563 | ||
5564 | sdata = bfd_zalloc (abfd, amt); | |
5565 | if (sdata == NULL) | |
5566 | return FALSE; | |
5567 | sec->used_by_bfd = sdata; | |
5568 | ||
5569 | return _bfd_elf_new_section_hook (abfd, sec); | |
5570 | } | |
5571 | ||
5572 | ||
5573 | /* Used to order a list of mapping symbols by address. */ | |
5574 | ||
5575 | static int | |
5576 | elf32_arm_compare_mapping (const void * a, const void * b) | |
5577 | { | |
5578 | return ((const elf32_arm_section_map *) a)->vma | |
5579 | > ((const elf32_arm_section_map *) b)->vma; | |
5580 | } | |
5581 | ||
5582 | ||
5583 | /* Do code byteswapping. Return FALSE afterwards so that the section is | |
5584 | written out as normal. */ | |
5585 | ||
5586 | static bfd_boolean | |
5587 | elf32_arm_write_section (bfd *output_bfd ATTRIBUTE_UNUSED, asection *sec, | |
5588 | bfd_byte *contents) | |
5589 | { | |
5590 | int mapcount; | |
5591 | elf32_arm_section_map *map; | |
5592 | bfd_vma ptr; | |
5593 | bfd_vma end; | |
5594 | bfd_vma offset; | |
5595 | bfd_byte tmp; | |
5596 | int i; | |
57e8b36a | 5597 | |
e489d0ae PB |
5598 | mapcount = elf32_arm_section_data (sec)->mapcount; |
5599 | map = elf32_arm_section_data (sec)->map; | |
5600 | ||
5601 | if (mapcount == 0) | |
5602 | return FALSE; | |
5603 | ||
5604 | qsort (map, mapcount, sizeof (elf32_arm_section_map), | |
5605 | elf32_arm_compare_mapping); | |
5606 | ||
5607 | offset = sec->output_section->vma + sec->output_offset; | |
5608 | ptr = map[0].vma - offset; | |
5609 | for (i = 0; i < mapcount; i++) | |
5610 | { | |
5611 | if (i == mapcount - 1) | |
eea6121a | 5612 | end = sec->size; |
e489d0ae PB |
5613 | else |
5614 | end = map[i + 1].vma - offset; | |
57e8b36a | 5615 | |
e489d0ae PB |
5616 | switch (map[i].type) |
5617 | { | |
5618 | case 'a': | |
5619 | /* Byte swap code words. */ | |
5620 | while (ptr + 3 < end) | |
5621 | { | |
5622 | tmp = contents[ptr]; | |
5623 | contents[ptr] = contents[ptr + 3]; | |
5624 | contents[ptr + 3] = tmp; | |
5625 | tmp = contents[ptr + 1]; | |
5626 | contents[ptr + 1] = contents[ptr + 2]; | |
5627 | contents[ptr + 2] = tmp; | |
5628 | ptr += 4; | |
5629 | } | |
5630 | break; | |
5631 | ||
5632 | case 't': | |
5633 | /* Byte swap code halfwords. */ | |
5634 | while (ptr + 1 < end) | |
5635 | { | |
5636 | tmp = contents[ptr]; | |
5637 | contents[ptr] = contents[ptr + 1]; | |
5638 | contents[ptr + 1] = tmp; | |
5639 | ptr += 2; | |
5640 | } | |
5641 | break; | |
5642 | ||
5643 | case 'd': | |
5644 | /* Leave data alone. */ | |
5645 | break; | |
5646 | } | |
5647 | ptr = end; | |
5648 | } | |
93204d3a | 5649 | free (map); |
e489d0ae PB |
5650 | return FALSE; |
5651 | } | |
5652 | ||
b7693d02 DJ |
5653 | /* Display STT_ARM_TFUNC symbols as functions. */ |
5654 | ||
5655 | static void | |
5656 | elf32_arm_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, | |
5657 | asymbol *asym) | |
5658 | { | |
5659 | elf_symbol_type *elfsym = (elf_symbol_type *) asym; | |
5660 | ||
5661 | if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_ARM_TFUNC) | |
5662 | elfsym->symbol.flags |= BSF_FUNCTION; | |
5663 | } | |
5664 | ||
252b5132 RH |
5665 | #define ELF_ARCH bfd_arch_arm |
5666 | #define ELF_MACHINE_CODE EM_ARM | |
d0facd1b NC |
5667 | #ifdef __QNXTARGET__ |
5668 | #define ELF_MAXPAGESIZE 0x1000 | |
5669 | #else | |
f21f3fe0 | 5670 | #define ELF_MAXPAGESIZE 0x8000 |
d0facd1b | 5671 | #endif |
252b5132 | 5672 | |
99e4ae17 AJ |
5673 | #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data |
5674 | #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data | |
252b5132 RH |
5675 | #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags |
5676 | #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data | |
5677 | #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create | |
dc810e39 | 5678 | #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup |
252b5132 | 5679 | #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line |
e489d0ae | 5680 | #define bfd_elf32_new_section_hook elf32_arm_new_section_hook |
3c9458e9 | 5681 | #define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol |
252b5132 RH |
5682 | |
5683 | #define elf_backend_get_symbol_type elf32_arm_get_symbol_type | |
5684 | #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook | |
5685 | #define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook | |
5686 | #define elf_backend_check_relocs elf32_arm_check_relocs | |
dc810e39 | 5687 | #define elf_backend_relocate_section elf32_arm_relocate_section |
e489d0ae | 5688 | #define elf_backend_write_section elf32_arm_write_section |
252b5132 | 5689 | #define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol |
5e681ec4 | 5690 | #define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections |
252b5132 RH |
5691 | #define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol |
5692 | #define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections | |
e489d0ae | 5693 | #define elf_backend_link_output_symbol_hook elf32_arm_output_symbol_hook |
252b5132 | 5694 | #define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections |
ba96a88f | 5695 | #define elf_backend_post_process_headers elf32_arm_post_process_headers |
99e4ae17 | 5696 | #define elf_backend_reloc_type_class elf32_arm_reloc_type_class |
c178919b | 5697 | #define elf_backend_object_p elf32_arm_object_p |
e16bb312 | 5698 | #define elf_backend_section_flags elf32_arm_section_flags |
40a18ebd NC |
5699 | #define elf_backend_fake_sections elf32_arm_fake_sections |
5700 | #define elf_backend_section_from_shdr elf32_arm_section_from_shdr | |
e16bb312 | 5701 | #define elf_backend_final_write_processing elf32_arm_final_write_processing |
5e681ec4 | 5702 | #define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol |
b7693d02 | 5703 | #define elf_backend_symbol_processing elf32_arm_symbol_processing |
252b5132 | 5704 | |
5e681ec4 | 5705 | #define elf_backend_can_refcount 1 |
252b5132 RH |
5706 | #define elf_backend_can_gc_sections 1 |
5707 | #define elf_backend_plt_readonly 1 | |
5708 | #define elf_backend_want_got_plt 1 | |
5709 | #define elf_backend_want_plt_sym 0 | |
acf8aed4 | 5710 | #if !USE_REL |
b491616a AM |
5711 | #define elf_backend_rela_normal 1 |
5712 | #endif | |
252b5132 | 5713 | |
04f7c78d | 5714 | #define elf_backend_got_header_size 12 |
04f7c78d | 5715 | |
252b5132 | 5716 | #include "elf32-target.h" |
7f266840 DJ |
5717 | |
5718 | /* Symbian OS Targets */ | |
5719 | ||
5720 | #undef TARGET_LITTLE_SYM | |
5721 | #define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec | |
5722 | #undef TARGET_LITTLE_NAME | |
5723 | #define TARGET_LITTLE_NAME "elf32-littlearm-symbian" | |
5724 | #undef TARGET_BIG_SYM | |
5725 | #define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec | |
5726 | #undef TARGET_BIG_NAME | |
5727 | #define TARGET_BIG_NAME "elf32-bigarm-symbian" | |
5728 | ||
5729 | /* Like elf32_arm_link_hash_table_create -- but overrides | |
5730 | appropriately for Symbian OS. */ | |
5731 | static struct bfd_link_hash_table * | |
5732 | elf32_arm_symbian_link_hash_table_create (bfd *abfd) | |
5733 | { | |
5734 | struct bfd_link_hash_table *ret; | |
5735 | ||
5736 | ret = elf32_arm_link_hash_table_create (abfd); | |
5737 | if (ret) | |
5738 | { | |
5739 | struct elf32_arm_link_hash_table *htab | |
5740 | = (struct elf32_arm_link_hash_table *)ret; | |
5741 | /* There is no PLT header for Symbian OS. */ | |
5742 | htab->plt_header_size = 0; | |
5743 | /* The PLT entries are each three instructions. */ | |
5744 | htab->plt_entry_size = 4 * NUM_ELEM (elf32_arm_symbian_plt_entry); | |
5745 | htab->symbian_p = 1; | |
5746 | } | |
5747 | return ret; | |
5748 | } | |
5749 | ||
5750 | /* In a BPABI executable, the dynamic linking sections do not go in | |
5751 | the loadable read-only segment. The post-linker may wish to refer | |
5752 | to these sections, but they are not part of the final program | |
5753 | image. */ | |
5754 | static struct bfd_elf_special_section const | |
5755 | elf32_arm_symbian_special_sections[]= | |
5756 | { | |
5757 | { ".dynamic", 8, 0, SHT_DYNAMIC, 0 }, | |
5758 | { ".dynstr", 7, 0, SHT_STRTAB, 0 }, | |
5759 | { ".dynsym", 7, 0, SHT_DYNSYM, 0 }, | |
5760 | { ".got", 4, 0, SHT_PROGBITS, 0 }, | |
5761 | { ".hash", 5, 0, SHT_HASH, 0 }, | |
5762 | { NULL, 0, 0, 0, 0 } | |
5763 | }; | |
5764 | ||
c3c76620 | 5765 | static void |
b34af79c MM |
5766 | elf32_arm_symbian_begin_write_processing (bfd *abfd, |
5767 | struct bfd_link_info *link_info | |
5768 | ATTRIBUTE_UNUSED) | |
c3c76620 MM |
5769 | { |
5770 | /* BPABI objects are never loaded directly by an OS kernel; they are | |
5771 | processed by a postlinker first, into an OS-specific format. If | |
5772 | the D_PAGED bit is set on the file, BFD will align segments on | |
5773 | page boundaries, so that an OS can directly map the file. With | |
5774 | BPABI objects, that just results in wasted space. In addition, | |
5775 | because we clear the D_PAGED bit, map_sections_to_segments will | |
5776 | recognize that the program headers should not be mapped into any | |
5777 | loadable segment. */ | |
5778 | abfd->flags &= ~D_PAGED; | |
5779 | } | |
7f266840 DJ |
5780 | |
5781 | static bfd_boolean | |
b34af79c MM |
5782 | elf32_arm_symbian_modify_segment_map (bfd *abfd, |
5783 | struct bfd_link_info *info | |
5784 | ATTRIBUTE_UNUSED) | |
7f266840 DJ |
5785 | { |
5786 | struct elf_segment_map *m; | |
5787 | asection *dynsec; | |
5788 | ||
7f266840 DJ |
5789 | /* BPABI shared libraries and executables should have a PT_DYNAMIC |
5790 | segment. However, because the .dynamic section is not marked | |
5791 | with SEC_LOAD, the generic ELF code will not create such a | |
5792 | segment. */ | |
5793 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); | |
5794 | if (dynsec) | |
5795 | { | |
5796 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); | |
5797 | m->next = elf_tdata (abfd)->segment_map; | |
5798 | elf_tdata (abfd)->segment_map = m; | |
5799 | } | |
5800 | ||
5801 | return TRUE; | |
5802 | } | |
5803 | ||
5804 | #undef elf32_bed | |
5805 | #define elf32_bed elf32_arm_symbian_bed | |
5806 | ||
5807 | /* The dynamic sections are not allocated on SymbianOS; the postlinker | |
5808 | will process them and then discard them. */ | |
5809 | #undef ELF_DYNAMIC_SEC_FLAGS | |
5810 | #define ELF_DYNAMIC_SEC_FLAGS \ | |
5811 | (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED) | |
5812 | ||
5813 | #undef bfd_elf32_bfd_link_hash_table_create | |
5814 | #define bfd_elf32_bfd_link_hash_table_create \ | |
5815 | elf32_arm_symbian_link_hash_table_create | |
5816 | ||
5817 | #undef elf_backend_special_sections | |
5818 | #define elf_backend_special_sections elf32_arm_symbian_special_sections | |
5819 | ||
c3c76620 MM |
5820 | #undef elf_backend_begin_write_processing |
5821 | #define elf_backend_begin_write_processing \ | |
5822 | elf32_arm_symbian_begin_write_processing | |
5823 | ||
7f266840 DJ |
5824 | #undef elf_backend_modify_segment_map |
5825 | #define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map | |
5826 | ||
5827 | /* There is no .got section for BPABI objects, and hence no header. */ | |
5828 | #undef elf_backend_got_header_size | |
5829 | #define elf_backend_got_header_size 0 | |
5830 | ||
5831 | /* Similarly, there is no .got.plt section. */ | |
5832 | #undef elf_backend_want_got_plt | |
5833 | #define elf_backend_want_got_plt 0 | |
5834 | ||
5835 | #include "elf32-target.h" |