Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* 32-bit ELF support for ARM |
4e7fd91e | 2 | Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 |
d1f161ea | 3 | Free Software Foundation, Inc. |
252b5132 RH |
4 | |
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
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 | ||
7f266840 DJ |
31 | #define elf_info_to_howto 0 |
32 | #define elf_info_to_howto_rel elf32_arm_info_to_howto | |
33 | ||
34 | #define ARM_ELF_ABI_VERSION 0 | |
35 | #define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM | |
36 | ||
37 | static reloc_howto_type * elf32_arm_reloc_type_lookup | |
38 | PARAMS ((bfd * abfd, bfd_reloc_code_real_type code)); | |
39 | static bfd_boolean elf32_arm_nabi_grok_prstatus | |
40 | PARAMS ((bfd *abfd, Elf_Internal_Note *note)); | |
41 | static bfd_boolean elf32_arm_nabi_grok_psinfo | |
42 | PARAMS ((bfd *abfd, Elf_Internal_Note *note)); | |
43 | ||
44 | /* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g. | |
45 | R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO | |
46 | in that slot. */ | |
47 | ||
48 | static reloc_howto_type elf32_arm_howto_table[] = | |
49 | { | |
50 | /* No relocation */ | |
51 | HOWTO (R_ARM_NONE, /* type */ | |
52 | 0, /* rightshift */ | |
53 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
54 | 0, /* bitsize */ | |
55 | FALSE, /* pc_relative */ | |
56 | 0, /* bitpos */ | |
57 | complain_overflow_dont,/* complain_on_overflow */ | |
58 | bfd_elf_generic_reloc, /* special_function */ | |
59 | "R_ARM_NONE", /* name */ | |
60 | FALSE, /* partial_inplace */ | |
61 | 0, /* src_mask */ | |
62 | 0, /* dst_mask */ | |
63 | FALSE), /* pcrel_offset */ | |
64 | ||
65 | HOWTO (R_ARM_PC24, /* type */ | |
66 | 2, /* rightshift */ | |
67 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
68 | 24, /* bitsize */ | |
69 | TRUE, /* pc_relative */ | |
70 | 0, /* bitpos */ | |
71 | complain_overflow_signed,/* complain_on_overflow */ | |
72 | bfd_elf_generic_reloc, /* special_function */ | |
73 | "R_ARM_PC24", /* name */ | |
74 | FALSE, /* partial_inplace */ | |
75 | 0x00ffffff, /* src_mask */ | |
76 | 0x00ffffff, /* dst_mask */ | |
77 | TRUE), /* pcrel_offset */ | |
78 | ||
79 | /* 32 bit absolute */ | |
80 | HOWTO (R_ARM_ABS32, /* type */ | |
81 | 0, /* rightshift */ | |
82 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
83 | 32, /* bitsize */ | |
84 | FALSE, /* pc_relative */ | |
85 | 0, /* bitpos */ | |
86 | complain_overflow_bitfield,/* complain_on_overflow */ | |
87 | bfd_elf_generic_reloc, /* special_function */ | |
88 | "R_ARM_ABS32", /* name */ | |
89 | FALSE, /* partial_inplace */ | |
90 | 0xffffffff, /* src_mask */ | |
91 | 0xffffffff, /* dst_mask */ | |
92 | FALSE), /* pcrel_offset */ | |
93 | ||
94 | /* standard 32bit pc-relative reloc */ | |
95 | HOWTO (R_ARM_REL32, /* type */ | |
96 | 0, /* rightshift */ | |
97 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
98 | 32, /* bitsize */ | |
99 | TRUE, /* pc_relative */ | |
100 | 0, /* bitpos */ | |
101 | complain_overflow_bitfield,/* complain_on_overflow */ | |
102 | bfd_elf_generic_reloc, /* special_function */ | |
103 | "R_ARM_REL32", /* name */ | |
104 | FALSE, /* partial_inplace */ | |
105 | 0xffffffff, /* src_mask */ | |
106 | 0xffffffff, /* dst_mask */ | |
107 | TRUE), /* pcrel_offset */ | |
108 | ||
109 | /* 8 bit absolute */ | |
110 | HOWTO (R_ARM_PC13, /* type */ | |
111 | 0, /* rightshift */ | |
112 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
113 | 8, /* bitsize */ | |
114 | FALSE, /* pc_relative */ | |
115 | 0, /* bitpos */ | |
116 | complain_overflow_bitfield,/* complain_on_overflow */ | |
117 | bfd_elf_generic_reloc, /* special_function */ | |
118 | "R_ARM_PC13", /* name */ | |
119 | FALSE, /* partial_inplace */ | |
120 | 0x000000ff, /* src_mask */ | |
121 | 0x000000ff, /* dst_mask */ | |
122 | FALSE), /* pcrel_offset */ | |
123 | ||
124 | /* 16 bit absolute */ | |
125 | HOWTO (R_ARM_ABS16, /* type */ | |
126 | 0, /* rightshift */ | |
127 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
128 | 16, /* bitsize */ | |
129 | FALSE, /* pc_relative */ | |
130 | 0, /* bitpos */ | |
131 | complain_overflow_bitfield,/* complain_on_overflow */ | |
132 | bfd_elf_generic_reloc, /* special_function */ | |
133 | "R_ARM_ABS16", /* name */ | |
134 | FALSE, /* partial_inplace */ | |
135 | 0x0000ffff, /* src_mask */ | |
136 | 0x0000ffff, /* dst_mask */ | |
137 | FALSE), /* pcrel_offset */ | |
138 | ||
139 | /* 12 bit absolute */ | |
140 | HOWTO (R_ARM_ABS12, /* type */ | |
141 | 0, /* rightshift */ | |
142 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
143 | 12, /* bitsize */ | |
144 | FALSE, /* pc_relative */ | |
145 | 0, /* bitpos */ | |
146 | complain_overflow_bitfield,/* complain_on_overflow */ | |
147 | bfd_elf_generic_reloc, /* special_function */ | |
148 | "R_ARM_ABS12", /* name */ | |
149 | FALSE, /* partial_inplace */ | |
150 | 0x000008ff, /* src_mask */ | |
151 | 0x000008ff, /* dst_mask */ | |
152 | FALSE), /* pcrel_offset */ | |
153 | ||
154 | HOWTO (R_ARM_THM_ABS5, /* type */ | |
155 | 6, /* rightshift */ | |
156 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
157 | 5, /* bitsize */ | |
158 | FALSE, /* pc_relative */ | |
159 | 0, /* bitpos */ | |
160 | complain_overflow_bitfield,/* complain_on_overflow */ | |
161 | bfd_elf_generic_reloc, /* special_function */ | |
162 | "R_ARM_THM_ABS5", /* name */ | |
163 | FALSE, /* partial_inplace */ | |
164 | 0x000007e0, /* src_mask */ | |
165 | 0x000007e0, /* dst_mask */ | |
166 | FALSE), /* pcrel_offset */ | |
167 | ||
168 | /* 8 bit absolute */ | |
169 | HOWTO (R_ARM_ABS8, /* type */ | |
170 | 0, /* rightshift */ | |
171 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
172 | 8, /* bitsize */ | |
173 | FALSE, /* pc_relative */ | |
174 | 0, /* bitpos */ | |
175 | complain_overflow_bitfield,/* complain_on_overflow */ | |
176 | bfd_elf_generic_reloc, /* special_function */ | |
177 | "R_ARM_ABS8", /* name */ | |
178 | FALSE, /* partial_inplace */ | |
179 | 0x000000ff, /* src_mask */ | |
180 | 0x000000ff, /* dst_mask */ | |
181 | FALSE), /* pcrel_offset */ | |
182 | ||
183 | HOWTO (R_ARM_SBREL32, /* type */ | |
184 | 0, /* rightshift */ | |
185 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
186 | 32, /* bitsize */ | |
187 | FALSE, /* pc_relative */ | |
188 | 0, /* bitpos */ | |
189 | complain_overflow_dont,/* complain_on_overflow */ | |
190 | bfd_elf_generic_reloc, /* special_function */ | |
191 | "R_ARM_SBREL32", /* name */ | |
192 | FALSE, /* partial_inplace */ | |
193 | 0xffffffff, /* src_mask */ | |
194 | 0xffffffff, /* dst_mask */ | |
195 | FALSE), /* pcrel_offset */ | |
196 | ||
197 | HOWTO (R_ARM_THM_PC22, /* type */ | |
198 | 1, /* rightshift */ | |
199 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
200 | 23, /* bitsize */ | |
201 | TRUE, /* pc_relative */ | |
202 | 0, /* bitpos */ | |
203 | complain_overflow_signed,/* complain_on_overflow */ | |
204 | bfd_elf_generic_reloc, /* special_function */ | |
205 | "R_ARM_THM_PC22", /* name */ | |
206 | FALSE, /* partial_inplace */ | |
207 | 0x07ff07ff, /* src_mask */ | |
208 | 0x07ff07ff, /* dst_mask */ | |
209 | TRUE), /* pcrel_offset */ | |
210 | ||
211 | HOWTO (R_ARM_THM_PC8, /* type */ | |
212 | 1, /* rightshift */ | |
213 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
214 | 8, /* bitsize */ | |
215 | TRUE, /* pc_relative */ | |
216 | 0, /* bitpos */ | |
217 | complain_overflow_signed,/* complain_on_overflow */ | |
218 | bfd_elf_generic_reloc, /* special_function */ | |
219 | "R_ARM_THM_PC8", /* name */ | |
220 | FALSE, /* partial_inplace */ | |
221 | 0x000000ff, /* src_mask */ | |
222 | 0x000000ff, /* dst_mask */ | |
223 | TRUE), /* pcrel_offset */ | |
224 | ||
225 | HOWTO (R_ARM_AMP_VCALL9, /* type */ | |
226 | 1, /* rightshift */ | |
227 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
228 | 8, /* bitsize */ | |
229 | TRUE, /* pc_relative */ | |
230 | 0, /* bitpos */ | |
231 | complain_overflow_signed,/* complain_on_overflow */ | |
232 | bfd_elf_generic_reloc, /* special_function */ | |
233 | "R_ARM_AMP_VCALL9", /* name */ | |
234 | FALSE, /* partial_inplace */ | |
235 | 0x000000ff, /* src_mask */ | |
236 | 0x000000ff, /* dst_mask */ | |
237 | TRUE), /* pcrel_offset */ | |
238 | ||
239 | HOWTO (R_ARM_SWI24, /* type */ | |
240 | 0, /* rightshift */ | |
241 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
242 | 0, /* bitsize */ | |
243 | FALSE, /* pc_relative */ | |
244 | 0, /* bitpos */ | |
245 | complain_overflow_signed,/* complain_on_overflow */ | |
246 | bfd_elf_generic_reloc, /* special_function */ | |
247 | "R_ARM_SWI24", /* name */ | |
248 | FALSE, /* partial_inplace */ | |
249 | 0x00000000, /* src_mask */ | |
250 | 0x00000000, /* dst_mask */ | |
251 | FALSE), /* pcrel_offset */ | |
252 | ||
253 | HOWTO (R_ARM_THM_SWI8, /* type */ | |
254 | 0, /* rightshift */ | |
255 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
256 | 0, /* bitsize */ | |
257 | FALSE, /* pc_relative */ | |
258 | 0, /* bitpos */ | |
259 | complain_overflow_signed,/* complain_on_overflow */ | |
260 | bfd_elf_generic_reloc, /* special_function */ | |
261 | "R_ARM_SWI8", /* name */ | |
262 | FALSE, /* partial_inplace */ | |
263 | 0x00000000, /* src_mask */ | |
264 | 0x00000000, /* dst_mask */ | |
265 | FALSE), /* pcrel_offset */ | |
266 | ||
267 | /* BLX instruction for the ARM. */ | |
268 | HOWTO (R_ARM_XPC25, /* type */ | |
269 | 2, /* rightshift */ | |
270 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
271 | 25, /* bitsize */ | |
272 | TRUE, /* pc_relative */ | |
273 | 0, /* bitpos */ | |
274 | complain_overflow_signed,/* complain_on_overflow */ | |
275 | bfd_elf_generic_reloc, /* special_function */ | |
276 | "R_ARM_XPC25", /* name */ | |
277 | FALSE, /* partial_inplace */ | |
278 | 0x00ffffff, /* src_mask */ | |
279 | 0x00ffffff, /* dst_mask */ | |
280 | TRUE), /* pcrel_offset */ | |
281 | ||
282 | /* BLX instruction for the Thumb. */ | |
283 | HOWTO (R_ARM_THM_XPC22, /* type */ | |
284 | 2, /* rightshift */ | |
285 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
286 | 22, /* bitsize */ | |
287 | TRUE, /* pc_relative */ | |
288 | 0, /* bitpos */ | |
289 | complain_overflow_signed,/* complain_on_overflow */ | |
290 | bfd_elf_generic_reloc, /* special_function */ | |
291 | "R_ARM_THM_XPC22", /* name */ | |
292 | FALSE, /* partial_inplace */ | |
293 | 0x07ff07ff, /* src_mask */ | |
294 | 0x07ff07ff, /* dst_mask */ | |
295 | TRUE), /* pcrel_offset */ | |
296 | ||
ba93b8ac | 297 | /* Dynamic TLS relocations. */ |
7f266840 | 298 | |
ba93b8ac DJ |
299 | HOWTO (R_ARM_TLS_DTPMOD32, /* type */ |
300 | 0, /* rightshift */ | |
301 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
302 | 32, /* bitsize */ | |
303 | FALSE, /* pc_relative */ | |
304 | 0, /* bitpos */ | |
305 | complain_overflow_bitfield,/* complain_on_overflow */ | |
306 | bfd_elf_generic_reloc, /* special_function */ | |
307 | "R_ARM_TLS_DTPMOD32", /* name */ | |
308 | TRUE, /* partial_inplace */ | |
309 | 0xffffffff, /* src_mask */ | |
310 | 0xffffffff, /* dst_mask */ | |
311 | FALSE), /* pcrel_offset */ | |
7f266840 | 312 | |
ba93b8ac DJ |
313 | HOWTO (R_ARM_TLS_DTPOFF32, /* type */ |
314 | 0, /* rightshift */ | |
315 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
316 | 32, /* bitsize */ | |
317 | FALSE, /* pc_relative */ | |
318 | 0, /* bitpos */ | |
319 | complain_overflow_bitfield,/* complain_on_overflow */ | |
320 | bfd_elf_generic_reloc, /* special_function */ | |
321 | "R_ARM_TLS_DTPOFF32", /* name */ | |
322 | TRUE, /* partial_inplace */ | |
323 | 0xffffffff, /* src_mask */ | |
324 | 0xffffffff, /* dst_mask */ | |
325 | FALSE), /* pcrel_offset */ | |
7f266840 | 326 | |
ba93b8ac DJ |
327 | HOWTO (R_ARM_TLS_TPOFF32, /* type */ |
328 | 0, /* rightshift */ | |
329 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
330 | 32, /* bitsize */ | |
331 | FALSE, /* pc_relative */ | |
332 | 0, /* bitpos */ | |
333 | complain_overflow_bitfield,/* complain_on_overflow */ | |
334 | bfd_elf_generic_reloc, /* special_function */ | |
335 | "R_ARM_TLS_TPOFF32", /* name */ | |
336 | TRUE, /* partial_inplace */ | |
337 | 0xffffffff, /* src_mask */ | |
338 | 0xffffffff, /* dst_mask */ | |
339 | FALSE), /* pcrel_offset */ | |
7f266840 DJ |
340 | |
341 | /* Relocs used in ARM Linux */ | |
342 | ||
343 | HOWTO (R_ARM_COPY, /* type */ | |
344 | 0, /* rightshift */ | |
345 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
346 | 32, /* bitsize */ | |
347 | FALSE, /* pc_relative */ | |
348 | 0, /* bitpos */ | |
349 | complain_overflow_bitfield,/* complain_on_overflow */ | |
350 | bfd_elf_generic_reloc, /* special_function */ | |
351 | "R_ARM_COPY", /* name */ | |
352 | TRUE, /* partial_inplace */ | |
353 | 0xffffffff, /* src_mask */ | |
354 | 0xffffffff, /* dst_mask */ | |
355 | FALSE), /* pcrel_offset */ | |
356 | ||
357 | HOWTO (R_ARM_GLOB_DAT, /* type */ | |
358 | 0, /* rightshift */ | |
359 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
360 | 32, /* bitsize */ | |
361 | FALSE, /* pc_relative */ | |
362 | 0, /* bitpos */ | |
363 | complain_overflow_bitfield,/* complain_on_overflow */ | |
364 | bfd_elf_generic_reloc, /* special_function */ | |
365 | "R_ARM_GLOB_DAT", /* name */ | |
366 | TRUE, /* partial_inplace */ | |
367 | 0xffffffff, /* src_mask */ | |
368 | 0xffffffff, /* dst_mask */ | |
369 | FALSE), /* pcrel_offset */ | |
370 | ||
371 | HOWTO (R_ARM_JUMP_SLOT, /* type */ | |
372 | 0, /* rightshift */ | |
373 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
374 | 32, /* bitsize */ | |
375 | FALSE, /* pc_relative */ | |
376 | 0, /* bitpos */ | |
377 | complain_overflow_bitfield,/* complain_on_overflow */ | |
378 | bfd_elf_generic_reloc, /* special_function */ | |
379 | "R_ARM_JUMP_SLOT", /* name */ | |
380 | TRUE, /* partial_inplace */ | |
381 | 0xffffffff, /* src_mask */ | |
382 | 0xffffffff, /* dst_mask */ | |
383 | FALSE), /* pcrel_offset */ | |
384 | ||
385 | HOWTO (R_ARM_RELATIVE, /* type */ | |
386 | 0, /* rightshift */ | |
387 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
388 | 32, /* bitsize */ | |
389 | FALSE, /* pc_relative */ | |
390 | 0, /* bitpos */ | |
391 | complain_overflow_bitfield,/* complain_on_overflow */ | |
392 | bfd_elf_generic_reloc, /* special_function */ | |
393 | "R_ARM_RELATIVE", /* name */ | |
394 | TRUE, /* partial_inplace */ | |
395 | 0xffffffff, /* src_mask */ | |
396 | 0xffffffff, /* dst_mask */ | |
397 | FALSE), /* pcrel_offset */ | |
398 | ||
399 | HOWTO (R_ARM_GOTOFF, /* type */ | |
400 | 0, /* rightshift */ | |
401 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
402 | 32, /* bitsize */ | |
403 | FALSE, /* pc_relative */ | |
404 | 0, /* bitpos */ | |
405 | complain_overflow_bitfield,/* complain_on_overflow */ | |
406 | bfd_elf_generic_reloc, /* special_function */ | |
407 | "R_ARM_GOTOFF", /* name */ | |
408 | TRUE, /* partial_inplace */ | |
409 | 0xffffffff, /* src_mask */ | |
410 | 0xffffffff, /* dst_mask */ | |
411 | FALSE), /* pcrel_offset */ | |
412 | ||
413 | HOWTO (R_ARM_GOTPC, /* type */ | |
414 | 0, /* rightshift */ | |
415 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
416 | 32, /* bitsize */ | |
417 | TRUE, /* pc_relative */ | |
418 | 0, /* bitpos */ | |
419 | complain_overflow_bitfield,/* complain_on_overflow */ | |
420 | bfd_elf_generic_reloc, /* special_function */ | |
421 | "R_ARM_GOTPC", /* name */ | |
422 | TRUE, /* partial_inplace */ | |
423 | 0xffffffff, /* src_mask */ | |
424 | 0xffffffff, /* dst_mask */ | |
425 | TRUE), /* pcrel_offset */ | |
426 | ||
427 | HOWTO (R_ARM_GOT32, /* type */ | |
428 | 0, /* rightshift */ | |
429 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
430 | 32, /* bitsize */ | |
431 | FALSE, /* pc_relative */ | |
432 | 0, /* bitpos */ | |
433 | complain_overflow_bitfield,/* complain_on_overflow */ | |
434 | bfd_elf_generic_reloc, /* special_function */ | |
435 | "R_ARM_GOT32", /* name */ | |
436 | TRUE, /* partial_inplace */ | |
437 | 0xffffffff, /* src_mask */ | |
438 | 0xffffffff, /* dst_mask */ | |
439 | FALSE), /* pcrel_offset */ | |
440 | ||
441 | HOWTO (R_ARM_PLT32, /* type */ | |
442 | 2, /* rightshift */ | |
443 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
444 | 26, /* bitsize */ | |
445 | TRUE, /* pc_relative */ | |
446 | 0, /* bitpos */ | |
447 | complain_overflow_bitfield,/* complain_on_overflow */ | |
448 | bfd_elf_generic_reloc, /* special_function */ | |
449 | "R_ARM_PLT32", /* name */ | |
450 | TRUE, /* partial_inplace */ | |
451 | 0x00ffffff, /* src_mask */ | |
452 | 0x00ffffff, /* dst_mask */ | |
453 | TRUE), /* pcrel_offset */ | |
454 | ||
455 | HOWTO (R_ARM_CALL, /* type */ | |
456 | 2, /* rightshift */ | |
457 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
458 | 24, /* bitsize */ | |
459 | TRUE, /* pc_relative */ | |
460 | 0, /* bitpos */ | |
461 | complain_overflow_signed,/* complain_on_overflow */ | |
462 | bfd_elf_generic_reloc, /* special_function */ | |
463 | "R_ARM_CALL", /* name */ | |
464 | FALSE, /* partial_inplace */ | |
465 | 0x00ffffff, /* src_mask */ | |
466 | 0x00ffffff, /* dst_mask */ | |
467 | TRUE), /* pcrel_offset */ | |
468 | ||
469 | HOWTO (R_ARM_JUMP24, /* type */ | |
470 | 2, /* rightshift */ | |
471 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
472 | 24, /* bitsize */ | |
473 | TRUE, /* pc_relative */ | |
474 | 0, /* bitpos */ | |
475 | complain_overflow_signed,/* complain_on_overflow */ | |
476 | bfd_elf_generic_reloc, /* special_function */ | |
477 | "R_ARM_JUMP24", /* name */ | |
478 | FALSE, /* partial_inplace */ | |
479 | 0x00ffffff, /* src_mask */ | |
480 | 0x00ffffff, /* dst_mask */ | |
481 | TRUE), /* pcrel_offset */ | |
482 | ||
483 | HOWTO (R_ARM_NONE, /* type */ | |
484 | 0, /* rightshift */ | |
485 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
486 | 0, /* bitsize */ | |
487 | FALSE, /* pc_relative */ | |
488 | 0, /* bitpos */ | |
489 | complain_overflow_dont,/* complain_on_overflow */ | |
490 | bfd_elf_generic_reloc, /* special_function */ | |
491 | "R_ARM_unknown_30", /* name */ | |
492 | FALSE, /* partial_inplace */ | |
493 | 0, /* src_mask */ | |
494 | 0, /* dst_mask */ | |
495 | FALSE), /* pcrel_offset */ | |
496 | ||
497 | HOWTO (R_ARM_NONE, /* type */ | |
498 | 0, /* rightshift */ | |
499 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
500 | 0, /* bitsize */ | |
501 | FALSE, /* pc_relative */ | |
502 | 0, /* bitpos */ | |
503 | complain_overflow_dont,/* complain_on_overflow */ | |
504 | bfd_elf_generic_reloc, /* special_function */ | |
505 | "R_ARM_unknown_31", /* name */ | |
506 | FALSE, /* partial_inplace */ | |
507 | 0, /* src_mask */ | |
508 | 0, /* dst_mask */ | |
509 | FALSE), /* pcrel_offset */ | |
510 | ||
511 | HOWTO (R_ARM_ALU_PCREL7_0, /* type */ | |
512 | 0, /* rightshift */ | |
513 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
514 | 12, /* bitsize */ | |
515 | TRUE, /* pc_relative */ | |
516 | 0, /* bitpos */ | |
517 | complain_overflow_dont,/* complain_on_overflow */ | |
518 | bfd_elf_generic_reloc, /* special_function */ | |
519 | "R_ARM_ALU_PCREL_7_0", /* name */ | |
520 | FALSE, /* partial_inplace */ | |
521 | 0x00000fff, /* src_mask */ | |
522 | 0x00000fff, /* dst_mask */ | |
523 | TRUE), /* pcrel_offset */ | |
524 | ||
525 | HOWTO (R_ARM_ALU_PCREL15_8, /* type */ | |
526 | 0, /* rightshift */ | |
527 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
528 | 12, /* bitsize */ | |
529 | TRUE, /* pc_relative */ | |
530 | 8, /* bitpos */ | |
531 | complain_overflow_dont,/* complain_on_overflow */ | |
532 | bfd_elf_generic_reloc, /* special_function */ | |
533 | "R_ARM_ALU_PCREL_15_8",/* name */ | |
534 | FALSE, /* partial_inplace */ | |
535 | 0x00000fff, /* src_mask */ | |
536 | 0x00000fff, /* dst_mask */ | |
537 | TRUE), /* pcrel_offset */ | |
538 | ||
539 | HOWTO (R_ARM_ALU_PCREL23_15, /* type */ | |
540 | 0, /* rightshift */ | |
541 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
542 | 12, /* bitsize */ | |
543 | TRUE, /* pc_relative */ | |
544 | 16, /* bitpos */ | |
545 | complain_overflow_dont,/* complain_on_overflow */ | |
546 | bfd_elf_generic_reloc, /* special_function */ | |
547 | "R_ARM_ALU_PCREL_23_15",/* name */ | |
548 | FALSE, /* partial_inplace */ | |
549 | 0x00000fff, /* src_mask */ | |
550 | 0x00000fff, /* dst_mask */ | |
551 | TRUE), /* pcrel_offset */ | |
552 | ||
553 | HOWTO (R_ARM_LDR_SBREL_11_0, /* type */ | |
554 | 0, /* rightshift */ | |
555 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
556 | 12, /* bitsize */ | |
557 | FALSE, /* pc_relative */ | |
558 | 0, /* bitpos */ | |
559 | complain_overflow_dont,/* complain_on_overflow */ | |
560 | bfd_elf_generic_reloc, /* special_function */ | |
561 | "R_ARM_LDR_SBREL_11_0",/* name */ | |
562 | FALSE, /* partial_inplace */ | |
563 | 0x00000fff, /* src_mask */ | |
564 | 0x00000fff, /* dst_mask */ | |
565 | FALSE), /* pcrel_offset */ | |
566 | ||
567 | HOWTO (R_ARM_ALU_SBREL_19_12, /* type */ | |
568 | 0, /* rightshift */ | |
569 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
570 | 8, /* bitsize */ | |
571 | FALSE, /* pc_relative */ | |
572 | 12, /* bitpos */ | |
573 | complain_overflow_dont,/* complain_on_overflow */ | |
574 | bfd_elf_generic_reloc, /* special_function */ | |
575 | "R_ARM_ALU_SBREL_19_12",/* name */ | |
576 | FALSE, /* partial_inplace */ | |
577 | 0x000ff000, /* src_mask */ | |
578 | 0x000ff000, /* dst_mask */ | |
579 | FALSE), /* pcrel_offset */ | |
580 | ||
581 | HOWTO (R_ARM_ALU_SBREL_27_20, /* type */ | |
582 | 0, /* rightshift */ | |
583 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
584 | 8, /* bitsize */ | |
585 | FALSE, /* pc_relative */ | |
586 | 20, /* bitpos */ | |
587 | complain_overflow_dont,/* complain_on_overflow */ | |
588 | bfd_elf_generic_reloc, /* special_function */ | |
589 | "R_ARM_ALU_SBREL_27_20",/* name */ | |
590 | FALSE, /* partial_inplace */ | |
591 | 0x0ff00000, /* src_mask */ | |
592 | 0x0ff00000, /* dst_mask */ | |
593 | FALSE), /* pcrel_offset */ | |
594 | ||
595 | HOWTO (R_ARM_TARGET1, /* type */ | |
596 | 0, /* rightshift */ | |
597 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
598 | 32, /* bitsize */ | |
599 | FALSE, /* pc_relative */ | |
600 | 0, /* bitpos */ | |
601 | complain_overflow_dont,/* complain_on_overflow */ | |
602 | bfd_elf_generic_reloc, /* special_function */ | |
603 | "R_ARM_TARGET1", /* name */ | |
604 | FALSE, /* partial_inplace */ | |
605 | 0xffffffff, /* src_mask */ | |
606 | 0xffffffff, /* dst_mask */ | |
607 | FALSE), /* pcrel_offset */ | |
608 | ||
609 | HOWTO (R_ARM_ROSEGREL32, /* type */ | |
610 | 0, /* rightshift */ | |
611 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
612 | 32, /* bitsize */ | |
613 | FALSE, /* pc_relative */ | |
614 | 0, /* bitpos */ | |
615 | complain_overflow_dont,/* complain_on_overflow */ | |
616 | bfd_elf_generic_reloc, /* special_function */ | |
617 | "R_ARM_ROSEGREL32", /* name */ | |
618 | FALSE, /* partial_inplace */ | |
619 | 0xffffffff, /* src_mask */ | |
620 | 0xffffffff, /* dst_mask */ | |
621 | FALSE), /* pcrel_offset */ | |
622 | ||
623 | HOWTO (R_ARM_V4BX, /* type */ | |
624 | 0, /* rightshift */ | |
625 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
626 | 32, /* bitsize */ | |
627 | FALSE, /* pc_relative */ | |
628 | 0, /* bitpos */ | |
629 | complain_overflow_dont,/* complain_on_overflow */ | |
630 | bfd_elf_generic_reloc, /* special_function */ | |
631 | "R_ARM_V4BX", /* name */ | |
632 | FALSE, /* partial_inplace */ | |
633 | 0xffffffff, /* src_mask */ | |
634 | 0xffffffff, /* dst_mask */ | |
635 | FALSE), /* pcrel_offset */ | |
636 | ||
637 | HOWTO (R_ARM_TARGET2, /* type */ | |
638 | 0, /* rightshift */ | |
639 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
640 | 32, /* bitsize */ | |
641 | FALSE, /* pc_relative */ | |
642 | 0, /* bitpos */ | |
643 | complain_overflow_signed,/* complain_on_overflow */ | |
644 | bfd_elf_generic_reloc, /* special_function */ | |
645 | "R_ARM_TARGET2", /* name */ | |
646 | FALSE, /* partial_inplace */ | |
647 | 0xffffffff, /* src_mask */ | |
648 | 0xffffffff, /* dst_mask */ | |
649 | TRUE), /* pcrel_offset */ | |
650 | ||
651 | HOWTO (R_ARM_PREL31, /* type */ | |
652 | 0, /* rightshift */ | |
653 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
654 | 31, /* bitsize */ | |
655 | TRUE, /* pc_relative */ | |
656 | 0, /* bitpos */ | |
657 | complain_overflow_signed,/* complain_on_overflow */ | |
658 | bfd_elf_generic_reloc, /* special_function */ | |
659 | "R_ARM_PREL31", /* name */ | |
660 | FALSE, /* partial_inplace */ | |
661 | 0x7fffffff, /* src_mask */ | |
662 | 0x7fffffff, /* dst_mask */ | |
663 | TRUE), /* pcrel_offset */ | |
664 | }; | |
665 | ||
ba93b8ac DJ |
666 | static reloc_howto_type elf32_arm_tls_gd32_howto = |
667 | HOWTO (R_ARM_TLS_GD32, /* type */ | |
668 | 0, /* rightshift */ | |
669 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
670 | 32, /* bitsize */ | |
671 | FALSE, /* pc_relative */ | |
672 | 0, /* bitpos */ | |
673 | complain_overflow_bitfield,/* complain_on_overflow */ | |
674 | NULL, /* special_function */ | |
675 | "R_ARM_TLS_GD32", /* name */ | |
676 | TRUE, /* partial_inplace */ | |
677 | 0xffffffff, /* src_mask */ | |
678 | 0xffffffff, /* dst_mask */ | |
679 | FALSE); /* pcrel_offset */ | |
680 | ||
681 | static reloc_howto_type elf32_arm_tls_ldo32_howto = | |
682 | HOWTO (R_ARM_TLS_LDO32, /* type */ | |
683 | 0, /* rightshift */ | |
684 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
685 | 32, /* bitsize */ | |
686 | FALSE, /* pc_relative */ | |
687 | 0, /* bitpos */ | |
688 | complain_overflow_bitfield,/* complain_on_overflow */ | |
689 | bfd_elf_generic_reloc, /* special_function */ | |
690 | "R_ARM_TLS_LDO32", /* name */ | |
691 | TRUE, /* partial_inplace */ | |
692 | 0xffffffff, /* src_mask */ | |
693 | 0xffffffff, /* dst_mask */ | |
694 | FALSE); /* pcrel_offset */ | |
695 | ||
696 | static reloc_howto_type elf32_arm_tls_ldm32_howto = | |
697 | HOWTO (R_ARM_TLS_LDM32, /* type */ | |
698 | 0, /* rightshift */ | |
699 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
700 | 32, /* bitsize */ | |
701 | FALSE, /* pc_relative */ | |
702 | 0, /* bitpos */ | |
703 | complain_overflow_bitfield,/* complain_on_overflow */ | |
704 | bfd_elf_generic_reloc, /* special_function */ | |
705 | "R_ARM_TLS_LDM32", /* name */ | |
706 | TRUE, /* partial_inplace */ | |
707 | 0xffffffff, /* src_mask */ | |
708 | 0xffffffff, /* dst_mask */ | |
709 | FALSE); /* pcrel_offset */ | |
710 | ||
711 | static reloc_howto_type elf32_arm_tls_le32_howto = | |
712 | HOWTO (R_ARM_TLS_LE32, /* type */ | |
713 | 0, /* rightshift */ | |
714 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
715 | 32, /* bitsize */ | |
716 | FALSE, /* pc_relative */ | |
717 | 0, /* bitpos */ | |
718 | complain_overflow_bitfield,/* complain_on_overflow */ | |
719 | bfd_elf_generic_reloc, /* special_function */ | |
720 | "R_ARM_TLS_LE32", /* name */ | |
721 | TRUE, /* partial_inplace */ | |
722 | 0xffffffff, /* src_mask */ | |
723 | 0xffffffff, /* dst_mask */ | |
724 | FALSE); /* pcrel_offset */ | |
725 | ||
726 | static reloc_howto_type elf32_arm_tls_ie32_howto = | |
727 | HOWTO (R_ARM_TLS_IE32, /* type */ | |
728 | 0, /* rightshift */ | |
729 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
730 | 32, /* bitsize */ | |
731 | FALSE, /* pc_relative */ | |
732 | 0, /* bitpos */ | |
733 | complain_overflow_bitfield,/* complain_on_overflow */ | |
734 | NULL, /* special_function */ | |
735 | "R_ARM_TLS_IE32", /* name */ | |
736 | TRUE, /* partial_inplace */ | |
737 | 0xffffffff, /* src_mask */ | |
738 | 0xffffffff, /* dst_mask */ | |
739 | FALSE); /* pcrel_offset */ | |
740 | ||
7f266840 DJ |
741 | /* GNU extension to record C++ vtable hierarchy */ |
742 | static reloc_howto_type elf32_arm_vtinherit_howto = | |
743 | HOWTO (R_ARM_GNU_VTINHERIT, /* type */ | |
744 | 0, /* rightshift */ | |
745 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
746 | 0, /* bitsize */ | |
747 | FALSE, /* pc_relative */ | |
748 | 0, /* bitpos */ | |
749 | complain_overflow_dont, /* complain_on_overflow */ | |
750 | NULL, /* special_function */ | |
751 | "R_ARM_GNU_VTINHERIT", /* name */ | |
752 | FALSE, /* partial_inplace */ | |
753 | 0, /* src_mask */ | |
754 | 0, /* dst_mask */ | |
755 | FALSE); /* pcrel_offset */ | |
756 | ||
757 | /* GNU extension to record C++ vtable member usage */ | |
758 | static reloc_howto_type elf32_arm_vtentry_howto = | |
759 | HOWTO (R_ARM_GNU_VTENTRY, /* type */ | |
760 | 0, /* rightshift */ | |
761 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
762 | 0, /* bitsize */ | |
763 | FALSE, /* pc_relative */ | |
764 | 0, /* bitpos */ | |
765 | complain_overflow_dont, /* complain_on_overflow */ | |
766 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
767 | "R_ARM_GNU_VTENTRY", /* name */ | |
768 | FALSE, /* partial_inplace */ | |
769 | 0, /* src_mask */ | |
770 | 0, /* dst_mask */ | |
771 | FALSE); /* pcrel_offset */ | |
772 | ||
773 | /* 12 bit pc relative */ | |
774 | static reloc_howto_type elf32_arm_thm_pc11_howto = | |
775 | HOWTO (R_ARM_THM_PC11, /* type */ | |
776 | 1, /* rightshift */ | |
777 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
778 | 11, /* bitsize */ | |
779 | TRUE, /* pc_relative */ | |
780 | 0, /* bitpos */ | |
781 | complain_overflow_signed, /* complain_on_overflow */ | |
782 | bfd_elf_generic_reloc, /* special_function */ | |
783 | "R_ARM_THM_PC11", /* name */ | |
784 | FALSE, /* partial_inplace */ | |
785 | 0x000007ff, /* src_mask */ | |
786 | 0x000007ff, /* dst_mask */ | |
787 | TRUE); /* pcrel_offset */ | |
788 | ||
789 | /* 12 bit pc relative */ | |
790 | static reloc_howto_type elf32_arm_thm_pc9_howto = | |
791 | HOWTO (R_ARM_THM_PC9, /* type */ | |
792 | 1, /* rightshift */ | |
793 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
794 | 8, /* bitsize */ | |
795 | TRUE, /* pc_relative */ | |
796 | 0, /* bitpos */ | |
797 | complain_overflow_signed, /* complain_on_overflow */ | |
798 | bfd_elf_generic_reloc, /* special_function */ | |
799 | "R_ARM_THM_PC9", /* name */ | |
800 | FALSE, /* partial_inplace */ | |
801 | 0x000000ff, /* src_mask */ | |
802 | 0x000000ff, /* dst_mask */ | |
803 | TRUE); /* pcrel_offset */ | |
804 | ||
805 | /* Place relative GOT-indirect. */ | |
806 | static reloc_howto_type elf32_arm_got_prel = | |
807 | HOWTO (R_ARM_GOT_PREL, /* type */ | |
808 | 0, /* rightshift */ | |
809 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
810 | 32, /* bitsize */ | |
811 | TRUE, /* pc_relative */ | |
812 | 0, /* bitpos */ | |
813 | complain_overflow_dont, /* complain_on_overflow */ | |
814 | bfd_elf_generic_reloc, /* special_function */ | |
815 | "R_ARM_GOT_PREL", /* name */ | |
816 | FALSE, /* partial_inplace */ | |
817 | 0xffffffff, /* src_mask */ | |
818 | 0xffffffff, /* dst_mask */ | |
819 | TRUE); /* pcrel_offset */ | |
820 | ||
821 | /* Currently unused relocations. */ | |
822 | static reloc_howto_type elf32_arm_r_howto[4] = | |
823 | { | |
824 | HOWTO (R_ARM_RREL32, /* type */ | |
825 | 0, /* rightshift */ | |
826 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
827 | 0, /* bitsize */ | |
828 | FALSE, /* pc_relative */ | |
829 | 0, /* bitpos */ | |
830 | complain_overflow_dont,/* complain_on_overflow */ | |
831 | bfd_elf_generic_reloc, /* special_function */ | |
832 | "R_ARM_RREL32", /* name */ | |
833 | FALSE, /* partial_inplace */ | |
834 | 0, /* src_mask */ | |
835 | 0, /* dst_mask */ | |
836 | FALSE), /* pcrel_offset */ | |
837 | ||
838 | HOWTO (R_ARM_RABS32, /* type */ | |
839 | 0, /* rightshift */ | |
840 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
841 | 0, /* bitsize */ | |
842 | FALSE, /* pc_relative */ | |
843 | 0, /* bitpos */ | |
844 | complain_overflow_dont,/* complain_on_overflow */ | |
845 | bfd_elf_generic_reloc, /* special_function */ | |
846 | "R_ARM_RABS32", /* name */ | |
847 | FALSE, /* partial_inplace */ | |
848 | 0, /* src_mask */ | |
849 | 0, /* dst_mask */ | |
850 | FALSE), /* pcrel_offset */ | |
851 | ||
852 | HOWTO (R_ARM_RPC24, /* type */ | |
853 | 0, /* rightshift */ | |
854 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
855 | 0, /* bitsize */ | |
856 | FALSE, /* pc_relative */ | |
857 | 0, /* bitpos */ | |
858 | complain_overflow_dont,/* complain_on_overflow */ | |
859 | bfd_elf_generic_reloc, /* special_function */ | |
860 | "R_ARM_RPC24", /* name */ | |
861 | FALSE, /* partial_inplace */ | |
862 | 0, /* src_mask */ | |
863 | 0, /* dst_mask */ | |
864 | FALSE), /* pcrel_offset */ | |
865 | ||
866 | HOWTO (R_ARM_RBASE, /* type */ | |
867 | 0, /* rightshift */ | |
868 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
869 | 0, /* bitsize */ | |
870 | FALSE, /* pc_relative */ | |
871 | 0, /* bitpos */ | |
872 | complain_overflow_dont,/* complain_on_overflow */ | |
873 | bfd_elf_generic_reloc, /* special_function */ | |
874 | "R_ARM_RBASE", /* name */ | |
875 | FALSE, /* partial_inplace */ | |
876 | 0, /* src_mask */ | |
877 | 0, /* dst_mask */ | |
878 | FALSE) /* pcrel_offset */ | |
879 | }; | |
880 | ||
881 | static reloc_howto_type * | |
882 | elf32_arm_howto_from_type (unsigned int r_type) | |
883 | { | |
884 | if (r_type < NUM_ELEM (elf32_arm_howto_table)) | |
885 | return &elf32_arm_howto_table[r_type]; | |
886 | ||
887 | switch (r_type) | |
888 | { | |
889 | case R_ARM_GOT_PREL: | |
890 | return &elf32_arm_got_prel; | |
891 | ||
892 | case R_ARM_GNU_VTINHERIT: | |
893 | return &elf32_arm_vtinherit_howto; | |
894 | ||
895 | case R_ARM_GNU_VTENTRY: | |
896 | return &elf32_arm_vtentry_howto; | |
897 | ||
898 | case R_ARM_THM_PC11: | |
899 | return &elf32_arm_thm_pc11_howto; | |
900 | ||
901 | case R_ARM_THM_PC9: | |
902 | return &elf32_arm_thm_pc9_howto; | |
ba93b8ac DJ |
903 | |
904 | case R_ARM_TLS_GD32: | |
905 | return &elf32_arm_tls_gd32_howto; | |
906 | break; | |
907 | ||
908 | case R_ARM_TLS_LDO32: | |
909 | return &elf32_arm_tls_ldo32_howto; | |
910 | break; | |
911 | ||
912 | case R_ARM_TLS_LDM32: | |
913 | return &elf32_arm_tls_ldm32_howto; | |
914 | break; | |
915 | ||
916 | case R_ARM_TLS_IE32: | |
917 | return &elf32_arm_tls_ie32_howto; | |
918 | break; | |
919 | ||
920 | case R_ARM_TLS_LE32: | |
921 | return &elf32_arm_tls_le32_howto; | |
922 | break; | |
7f266840 DJ |
923 | |
924 | case R_ARM_RREL32: | |
925 | case R_ARM_RABS32: | |
926 | case R_ARM_RPC24: | |
927 | case R_ARM_RBASE: | |
928 | return &elf32_arm_r_howto[r_type - R_ARM_RREL32]; | |
929 | ||
930 | default: | |
931 | return NULL; | |
932 | } | |
933 | } | |
934 | ||
935 | static void | |
936 | elf32_arm_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED, arelent * bfd_reloc, | |
937 | Elf_Internal_Rela * elf_reloc) | |
938 | { | |
939 | unsigned int r_type; | |
940 | ||
941 | r_type = ELF32_R_TYPE (elf_reloc->r_info); | |
942 | bfd_reloc->howto = elf32_arm_howto_from_type (r_type); | |
943 | } | |
944 | ||
945 | struct elf32_arm_reloc_map | |
946 | { | |
947 | bfd_reloc_code_real_type bfd_reloc_val; | |
948 | unsigned char elf_reloc_val; | |
949 | }; | |
950 | ||
951 | /* All entries in this list must also be present in elf32_arm_howto_table. */ | |
952 | static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] = | |
953 | { | |
954 | {BFD_RELOC_NONE, R_ARM_NONE}, | |
955 | {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24}, | |
956 | {BFD_RELOC_ARM_PCREL_BLX, R_ARM_XPC25}, | |
957 | {BFD_RELOC_THUMB_PCREL_BLX, R_ARM_THM_XPC22}, | |
958 | {BFD_RELOC_32, R_ARM_ABS32}, | |
959 | {BFD_RELOC_32_PCREL, R_ARM_REL32}, | |
960 | {BFD_RELOC_8, R_ARM_ABS8}, | |
961 | {BFD_RELOC_16, R_ARM_ABS16}, | |
962 | {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12}, | |
963 | {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5}, | |
964 | {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_PC22}, | |
965 | {BFD_RELOC_ARM_COPY, R_ARM_COPY}, | |
966 | {BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT}, | |
967 | {BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT}, | |
968 | {BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE}, | |
969 | {BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF}, | |
970 | {BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC}, | |
971 | {BFD_RELOC_ARM_GOT32, R_ARM_GOT32}, | |
972 | {BFD_RELOC_ARM_PLT32, R_ARM_PLT32}, | |
973 | {BFD_RELOC_ARM_TARGET1, R_ARM_TARGET1}, | |
974 | {BFD_RELOC_ARM_ROSEGREL32, R_ARM_ROSEGREL32}, | |
975 | {BFD_RELOC_ARM_SBREL32, R_ARM_SBREL32}, | |
976 | {BFD_RELOC_ARM_PREL31, R_ARM_PREL31}, | |
ba93b8ac DJ |
977 | {BFD_RELOC_ARM_TARGET2, R_ARM_TARGET2}, |
978 | {BFD_RELOC_ARM_PLT32, R_ARM_PLT32}, | |
979 | {BFD_RELOC_ARM_TLS_GD32, R_ARM_TLS_GD32}, | |
980 | {BFD_RELOC_ARM_TLS_LDO32, R_ARM_TLS_LDO32}, | |
981 | {BFD_RELOC_ARM_TLS_LDM32, R_ARM_TLS_LDM32}, | |
982 | {BFD_RELOC_ARM_TLS_DTPMOD32, R_ARM_TLS_DTPMOD32}, | |
983 | {BFD_RELOC_ARM_TLS_DTPOFF32, R_ARM_TLS_DTPOFF32}, | |
984 | {BFD_RELOC_ARM_TLS_TPOFF32, R_ARM_TLS_TPOFF32}, | |
985 | {BFD_RELOC_ARM_TLS_IE32, R_ARM_TLS_IE32}, | |
986 | {BFD_RELOC_ARM_TLS_LE32, R_ARM_TLS_LE32}, | |
7f266840 DJ |
987 | }; |
988 | ||
989 | static reloc_howto_type * | |
990 | elf32_arm_reloc_type_lookup (abfd, code) | |
991 | bfd *abfd ATTRIBUTE_UNUSED; | |
992 | bfd_reloc_code_real_type code; | |
993 | { | |
994 | unsigned int i; | |
995 | ||
996 | switch (code) | |
997 | { | |
998 | case BFD_RELOC_VTABLE_INHERIT: | |
999 | return & elf32_arm_vtinherit_howto; | |
1000 | ||
1001 | case BFD_RELOC_VTABLE_ENTRY: | |
1002 | return & elf32_arm_vtentry_howto; | |
1003 | ||
1004 | case BFD_RELOC_THUMB_PCREL_BRANCH12: | |
1005 | return & elf32_arm_thm_pc11_howto; | |
1006 | ||
1007 | case BFD_RELOC_THUMB_PCREL_BRANCH9: | |
1008 | return & elf32_arm_thm_pc9_howto; | |
1009 | ||
ba93b8ac DJ |
1010 | case BFD_RELOC_ARM_TLS_GD32: |
1011 | return & elf32_arm_tls_gd32_howto; | |
1012 | ||
1013 | case BFD_RELOC_ARM_TLS_LDO32: | |
1014 | return & elf32_arm_tls_ldo32_howto; | |
1015 | ||
1016 | case BFD_RELOC_ARM_TLS_LDM32: | |
1017 | return & elf32_arm_tls_ldm32_howto; | |
1018 | ||
1019 | case BFD_RELOC_ARM_TLS_IE32: | |
1020 | return & elf32_arm_tls_ie32_howto; | |
1021 | ||
1022 | case BFD_RELOC_ARM_TLS_LE32: | |
1023 | return & elf32_arm_tls_le32_howto; | |
1024 | ||
7f266840 DJ |
1025 | default: |
1026 | for (i = 0; i < NUM_ELEM (elf32_arm_reloc_map); i ++) | |
1027 | if (elf32_arm_reloc_map[i].bfd_reloc_val == code) | |
1028 | return & elf32_arm_howto_table[elf32_arm_reloc_map[i].elf_reloc_val]; | |
1029 | ||
1030 | return NULL; | |
1031 | } | |
1032 | } | |
1033 | ||
1034 | /* Support for core dump NOTE sections */ | |
1035 | static bfd_boolean | |
1036 | elf32_arm_nabi_grok_prstatus (abfd, note) | |
1037 | bfd *abfd; | |
1038 | Elf_Internal_Note *note; | |
1039 | { | |
1040 | int offset; | |
1041 | size_t size; | |
1042 | ||
1043 | switch (note->descsz) | |
1044 | { | |
1045 | default: | |
1046 | return FALSE; | |
1047 | ||
1048 | case 148: /* Linux/ARM 32-bit*/ | |
1049 | /* pr_cursig */ | |
1050 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
1051 | ||
1052 | /* pr_pid */ | |
1053 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); | |
1054 | ||
1055 | /* pr_reg */ | |
1056 | offset = 72; | |
1057 | size = 72; | |
1058 | ||
1059 | break; | |
1060 | } | |
1061 | ||
1062 | /* Make a ".reg/999" section. */ | |
1063 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
1064 | size, note->descpos + offset); | |
1065 | } | |
1066 | ||
1067 | static bfd_boolean | |
1068 | elf32_arm_nabi_grok_psinfo (abfd, note) | |
1069 | bfd *abfd; | |
1070 | Elf_Internal_Note *note; | |
1071 | { | |
1072 | switch (note->descsz) | |
1073 | { | |
1074 | default: | |
1075 | return FALSE; | |
1076 | ||
1077 | case 124: /* Linux/ARM elf_prpsinfo */ | |
1078 | elf_tdata (abfd)->core_program | |
1079 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); | |
1080 | elf_tdata (abfd)->core_command | |
1081 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); | |
1082 | } | |
1083 | ||
1084 | /* Note that for some reason, a spurious space is tacked | |
1085 | onto the end of the args in some (at least one anyway) | |
1086 | implementations, so strip it off if it exists. */ | |
1087 | ||
1088 | { | |
1089 | char *command = elf_tdata (abfd)->core_command; | |
1090 | int n = strlen (command); | |
1091 | ||
1092 | if (0 < n && command[n - 1] == ' ') | |
1093 | command[n - 1] = '\0'; | |
1094 | } | |
1095 | ||
1096 | return TRUE; | |
1097 | } | |
1098 | ||
1099 | #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec | |
1100 | #define TARGET_LITTLE_NAME "elf32-littlearm" | |
1101 | #define TARGET_BIG_SYM bfd_elf32_bigarm_vec | |
1102 | #define TARGET_BIG_NAME "elf32-bigarm" | |
1103 | ||
1104 | #define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus | |
1105 | #define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo | |
1106 | ||
252b5132 RH |
1107 | typedef unsigned long int insn32; |
1108 | typedef unsigned short int insn16; | |
1109 | ||
8cb51566 | 1110 | /* In lieu of proper flags, assume all EABIv4 objects are interworkable. */ |
57e8b36a | 1111 | #define INTERWORK_FLAG(abfd) \ |
8cb51566 | 1112 | (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) == EF_ARM_EABI_VER4 \ |
85a84e7a | 1113 | || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK)) |
9b485d32 | 1114 | |
252b5132 RH |
1115 | /* The linker script knows the section names for placement. |
1116 | The entry_names are used to do simple name mangling on the stubs. | |
1117 | Given a function name, and its type, the stub can be found. The | |
9b485d32 | 1118 | name can be changed. The only requirement is the %s be present. */ |
252b5132 RH |
1119 | #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t" |
1120 | #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb" | |
1121 | ||
1122 | #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7" | |
1123 | #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm" | |
1124 | ||
1125 | /* The name of the dynamic interpreter. This is put in the .interp | |
1126 | section. */ | |
1127 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
1128 | ||
5e681ec4 PB |
1129 | #ifdef FOUR_WORD_PLT |
1130 | ||
252b5132 RH |
1131 | /* The first entry in a procedure linkage table looks like |
1132 | this. It is set up so that any shared library function that is | |
59f2c4e7 | 1133 | called before the relocation has been set up calls the dynamic |
9b485d32 | 1134 | linker first. */ |
e5a52504 | 1135 | static const bfd_vma elf32_arm_plt0_entry [] = |
5e681ec4 PB |
1136 | { |
1137 | 0xe52de004, /* str lr, [sp, #-4]! */ | |
1138 | 0xe59fe010, /* ldr lr, [pc, #16] */ | |
1139 | 0xe08fe00e, /* add lr, pc, lr */ | |
1140 | 0xe5bef008, /* ldr pc, [lr, #8]! */ | |
1141 | }; | |
1142 | ||
1143 | /* Subsequent entries in a procedure linkage table look like | |
1144 | this. */ | |
e5a52504 | 1145 | static const bfd_vma elf32_arm_plt_entry [] = |
5e681ec4 PB |
1146 | { |
1147 | 0xe28fc600, /* add ip, pc, #NN */ | |
1148 | 0xe28cca00, /* add ip, ip, #NN */ | |
1149 | 0xe5bcf000, /* ldr pc, [ip, #NN]! */ | |
1150 | 0x00000000, /* unused */ | |
1151 | }; | |
1152 | ||
1153 | #else | |
1154 | ||
5e681ec4 PB |
1155 | /* The first entry in a procedure linkage table looks like |
1156 | this. It is set up so that any shared library function that is | |
1157 | called before the relocation has been set up calls the dynamic | |
1158 | linker first. */ | |
e5a52504 | 1159 | static const bfd_vma elf32_arm_plt0_entry [] = |
917583ad | 1160 | { |
5e681ec4 PB |
1161 | 0xe52de004, /* str lr, [sp, #-4]! */ |
1162 | 0xe59fe004, /* ldr lr, [pc, #4] */ | |
1163 | 0xe08fe00e, /* add lr, pc, lr */ | |
1164 | 0xe5bef008, /* ldr pc, [lr, #8]! */ | |
1165 | 0x00000000, /* &GOT[0] - . */ | |
917583ad | 1166 | }; |
252b5132 RH |
1167 | |
1168 | /* Subsequent entries in a procedure linkage table look like | |
1169 | this. */ | |
e5a52504 | 1170 | static const bfd_vma elf32_arm_plt_entry [] = |
5e681ec4 PB |
1171 | { |
1172 | 0xe28fc600, /* add ip, pc, #0xNN00000 */ | |
1173 | 0xe28cca00, /* add ip, ip, #0xNN000 */ | |
1174 | 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */ | |
1175 | }; | |
1176 | ||
1177 | #endif | |
252b5132 | 1178 | |
b7693d02 DJ |
1179 | /* An initial stub used if the PLT entry is referenced from Thumb code. */ |
1180 | #define PLT_THUMB_STUB_SIZE 4 | |
1181 | static const bfd_vma elf32_arm_plt_thumb_stub [] = | |
1182 | { | |
1183 | 0x4778, /* bx pc */ | |
1184 | 0x46c0 /* nop */ | |
1185 | }; | |
1186 | ||
e5a52504 MM |
1187 | /* The entries in a PLT when using a DLL-based target with multiple |
1188 | address spaces. */ | |
1189 | static const bfd_vma elf32_arm_symbian_plt_entry [] = | |
1190 | { | |
83a358aa | 1191 | 0xe51ff004, /* ldr pc, [pc, #-4] */ |
e5a52504 MM |
1192 | 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */ |
1193 | }; | |
1194 | ||
e489d0ae PB |
1195 | /* Used to build a map of a section. This is required for mixed-endian |
1196 | code/data. */ | |
1197 | ||
1198 | typedef struct elf32_elf_section_map | |
1199 | { | |
1200 | bfd_vma vma; | |
1201 | char type; | |
1202 | } | |
1203 | elf32_arm_section_map; | |
1204 | ||
1205 | struct _arm_elf_section_data | |
1206 | { | |
1207 | struct bfd_elf_section_data elf; | |
1208 | int mapcount; | |
1209 | elf32_arm_section_map *map; | |
1210 | }; | |
1211 | ||
1212 | #define elf32_arm_section_data(sec) \ | |
1213 | ((struct _arm_elf_section_data *) elf_section_data (sec)) | |
1214 | ||
ba93b8ac DJ |
1215 | /* The size of the thread control block. */ |
1216 | #define TCB_SIZE 8 | |
1217 | ||
1218 | struct elf32_arm_obj_tdata | |
1219 | { | |
1220 | struct elf_obj_tdata root; | |
1221 | ||
1222 | /* tls_type for each local got entry. */ | |
1223 | char *local_got_tls_type; | |
1224 | }; | |
1225 | ||
1226 | #define elf32_arm_tdata(abfd) \ | |
1227 | ((struct elf32_arm_obj_tdata *) (abfd)->tdata.any) | |
1228 | ||
1229 | #define elf32_arm_local_got_tls_type(abfd) \ | |
1230 | (elf32_arm_tdata (abfd)->local_got_tls_type) | |
1231 | ||
1232 | static bfd_boolean | |
1233 | elf32_arm_mkobject (bfd *abfd) | |
1234 | { | |
1235 | bfd_size_type amt = sizeof (struct elf32_arm_obj_tdata); | |
1236 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
1237 | if (abfd->tdata.any == NULL) | |
1238 | return FALSE; | |
1239 | return TRUE; | |
1240 | } | |
1241 | ||
252b5132 RH |
1242 | /* The ARM linker needs to keep track of the number of relocs that it |
1243 | decides to copy in check_relocs for each symbol. This is so that | |
1244 | it can discard PC relative relocs if it doesn't need them when | |
1245 | linking with -Bsymbolic. We store the information in a field | |
1246 | extending the regular ELF linker hash table. */ | |
1247 | ||
ba93b8ac DJ |
1248 | /* This structure keeps track of the number of relocs we have copied |
1249 | for a given symbol. */ | |
5e681ec4 | 1250 | struct elf32_arm_relocs_copied |
917583ad NC |
1251 | { |
1252 | /* Next section. */ | |
5e681ec4 | 1253 | struct elf32_arm_relocs_copied * next; |
917583ad NC |
1254 | /* A section in dynobj. */ |
1255 | asection * section; | |
1256 | /* Number of relocs copied in this section. */ | |
1257 | bfd_size_type count; | |
ba93b8ac DJ |
1258 | /* Number of PC-relative relocs copied in this section. */ |
1259 | bfd_size_type pc_count; | |
917583ad | 1260 | }; |
252b5132 | 1261 | |
ba93b8ac DJ |
1262 | #define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent)) |
1263 | ||
ba96a88f | 1264 | /* Arm ELF linker hash entry. */ |
252b5132 | 1265 | struct elf32_arm_link_hash_entry |
917583ad NC |
1266 | { |
1267 | struct elf_link_hash_entry root; | |
252b5132 | 1268 | |
917583ad | 1269 | /* Number of PC relative relocs copied for this symbol. */ |
5e681ec4 | 1270 | struct elf32_arm_relocs_copied * relocs_copied; |
b7693d02 DJ |
1271 | |
1272 | /* We reference count Thumb references to a PLT entry separately, | |
1273 | so that we can emit the Thumb trampoline only if needed. */ | |
1274 | bfd_signed_vma plt_thumb_refcount; | |
1275 | ||
1276 | /* Since PLT entries have variable size if the Thumb prologue is | |
1277 | used, we need to record the index into .got.plt instead of | |
1278 | recomputing it from the PLT offset. */ | |
1279 | bfd_signed_vma plt_got_offset; | |
ba93b8ac DJ |
1280 | |
1281 | #define GOT_UNKNOWN 0 | |
1282 | #define GOT_NORMAL 1 | |
1283 | #define GOT_TLS_GD 2 | |
1284 | #define GOT_TLS_IE 4 | |
1285 | unsigned char tls_type; | |
917583ad | 1286 | }; |
252b5132 | 1287 | |
252b5132 | 1288 | /* Traverse an arm ELF linker hash table. */ |
252b5132 RH |
1289 | #define elf32_arm_link_hash_traverse(table, func, info) \ |
1290 | (elf_link_hash_traverse \ | |
1291 | (&(table)->root, \ | |
b7693d02 | 1292 | (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
252b5132 RH |
1293 | (info))) |
1294 | ||
1295 | /* Get the ARM elf linker hash table from a link_info structure. */ | |
1296 | #define elf32_arm_hash_table(info) \ | |
1297 | ((struct elf32_arm_link_hash_table *) ((info)->hash)) | |
1298 | ||
9b485d32 | 1299 | /* ARM ELF linker hash table. */ |
252b5132 | 1300 | struct elf32_arm_link_hash_table |
917583ad NC |
1301 | { |
1302 | /* The main hash table. */ | |
1303 | struct elf_link_hash_table root; | |
252b5132 | 1304 | |
4cc11e76 | 1305 | /* The size in bytes of the section containing the Thumb-to-ARM glue. */ |
dc810e39 | 1306 | bfd_size_type thumb_glue_size; |
252b5132 | 1307 | |
4cc11e76 | 1308 | /* The size in bytes of the section containing the ARM-to-Thumb glue. */ |
dc810e39 | 1309 | bfd_size_type arm_glue_size; |
252b5132 | 1310 | |
4cc11e76 | 1311 | /* An arbitrary input BFD chosen to hold the glue sections. */ |
917583ad | 1312 | bfd * bfd_of_glue_owner; |
ba96a88f | 1313 | |
e489d0ae PB |
1314 | /* Nonzero to output a BE8 image. */ |
1315 | int byteswap_code; | |
1316 | ||
9c504268 PB |
1317 | /* Zero if R_ARM_TARGET1 means R_ARM_ABS32. |
1318 | Nonzero if R_ARM_TARGET1 means R_ARM_ABS32. */ | |
1319 | int target1_is_rel; | |
1320 | ||
eb043451 PB |
1321 | /* The relocation to use for R_ARM_TARGET2 relocations. */ |
1322 | int target2_reloc; | |
1323 | ||
319850b4 JB |
1324 | /* Nonzero to fix BX instructions for ARMv4 targets. */ |
1325 | int fix_v4bx; | |
1326 | ||
e5a52504 MM |
1327 | /* The number of bytes in the initial entry in the PLT. */ |
1328 | bfd_size_type plt_header_size; | |
1329 | ||
1330 | /* The number of bytes in the subsequent PLT etries. */ | |
1331 | bfd_size_type plt_entry_size; | |
1332 | ||
1333 | /* True if the target system is Symbian OS. */ | |
1334 | int symbian_p; | |
1335 | ||
4e7fd91e PB |
1336 | /* True if the target uses REL relocations. */ |
1337 | int use_rel; | |
1338 | ||
5e681ec4 PB |
1339 | /* Short-cuts to get to dynamic linker sections. */ |
1340 | asection *sgot; | |
1341 | asection *sgotplt; | |
1342 | asection *srelgot; | |
1343 | asection *splt; | |
1344 | asection *srelplt; | |
1345 | asection *sdynbss; | |
1346 | asection *srelbss; | |
1347 | ||
ba93b8ac DJ |
1348 | /* Data for R_ARM_TLS_LDM32 relocations. */ |
1349 | union { | |
1350 | bfd_signed_vma refcount; | |
1351 | bfd_vma offset; | |
1352 | } tls_ldm_got; | |
1353 | ||
5e681ec4 PB |
1354 | /* Small local sym to section mapping cache. */ |
1355 | struct sym_sec_cache sym_sec; | |
b7693d02 DJ |
1356 | |
1357 | /* For convenience in allocate_dynrelocs. */ | |
1358 | bfd * obfd; | |
917583ad | 1359 | }; |
252b5132 | 1360 | |
780a67af NC |
1361 | /* Create an entry in an ARM ELF linker hash table. */ |
1362 | ||
1363 | static struct bfd_hash_entry * | |
57e8b36a NC |
1364 | elf32_arm_link_hash_newfunc (struct bfd_hash_entry * entry, |
1365 | struct bfd_hash_table * table, | |
1366 | const char * string) | |
780a67af NC |
1367 | { |
1368 | struct elf32_arm_link_hash_entry * ret = | |
1369 | (struct elf32_arm_link_hash_entry *) entry; | |
1370 | ||
1371 | /* Allocate the structure if it has not already been allocated by a | |
1372 | subclass. */ | |
1373 | if (ret == (struct elf32_arm_link_hash_entry *) NULL) | |
57e8b36a NC |
1374 | ret = bfd_hash_allocate (table, sizeof (struct elf32_arm_link_hash_entry)); |
1375 | if (ret == NULL) | |
780a67af NC |
1376 | return (struct bfd_hash_entry *) ret; |
1377 | ||
1378 | /* Call the allocation method of the superclass. */ | |
1379 | ret = ((struct elf32_arm_link_hash_entry *) | |
1380 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
1381 | table, string)); | |
57e8b36a | 1382 | if (ret != NULL) |
b7693d02 DJ |
1383 | { |
1384 | ret->relocs_copied = NULL; | |
ba93b8ac | 1385 | ret->tls_type = GOT_UNKNOWN; |
b7693d02 DJ |
1386 | ret->plt_thumb_refcount = 0; |
1387 | ret->plt_got_offset = -1; | |
1388 | } | |
780a67af NC |
1389 | |
1390 | return (struct bfd_hash_entry *) ret; | |
1391 | } | |
1392 | ||
5e681ec4 PB |
1393 | /* Create .got, .gotplt, and .rel.got sections in DYNOBJ, and set up |
1394 | shortcuts to them in our hash table. */ | |
1395 | ||
1396 | static bfd_boolean | |
57e8b36a | 1397 | create_got_section (bfd *dynobj, struct bfd_link_info *info) |
5e681ec4 PB |
1398 | { |
1399 | struct elf32_arm_link_hash_table *htab; | |
1400 | ||
e5a52504 MM |
1401 | htab = elf32_arm_hash_table (info); |
1402 | /* BPABI objects never have a GOT, or associated sections. */ | |
1403 | if (htab->symbian_p) | |
1404 | return TRUE; | |
1405 | ||
5e681ec4 PB |
1406 | if (! _bfd_elf_create_got_section (dynobj, info)) |
1407 | return FALSE; | |
1408 | ||
5e681ec4 PB |
1409 | htab->sgot = bfd_get_section_by_name (dynobj, ".got"); |
1410 | htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1411 | if (!htab->sgot || !htab->sgotplt) | |
1412 | abort (); | |
1413 | ||
1414 | htab->srelgot = bfd_make_section (dynobj, ".rel.got"); | |
1415 | if (htab->srelgot == NULL | |
1416 | || ! bfd_set_section_flags (dynobj, htab->srelgot, | |
1417 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
1418 | | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
1419 | | SEC_READONLY)) | |
1420 | || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2)) | |
1421 | return FALSE; | |
1422 | return TRUE; | |
1423 | } | |
1424 | ||
1425 | /* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and | |
1426 | .rel.bss sections in DYNOBJ, and set up shortcuts to them in our | |
1427 | hash table. */ | |
1428 | ||
1429 | static bfd_boolean | |
57e8b36a | 1430 | elf32_arm_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5e681ec4 PB |
1431 | { |
1432 | struct elf32_arm_link_hash_table *htab; | |
1433 | ||
1434 | htab = elf32_arm_hash_table (info); | |
1435 | if (!htab->sgot && !create_got_section (dynobj, info)) | |
1436 | return FALSE; | |
1437 | ||
1438 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
1439 | return FALSE; | |
1440 | ||
1441 | htab->splt = bfd_get_section_by_name (dynobj, ".plt"); | |
1442 | htab->srelplt = bfd_get_section_by_name (dynobj, ".rel.plt"); | |
1443 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
1444 | if (!info->shared) | |
1445 | htab->srelbss = bfd_get_section_by_name (dynobj, ".rel.bss"); | |
1446 | ||
e5a52504 MM |
1447 | if (!htab->splt |
1448 | || !htab->srelplt | |
1449 | || !htab->sdynbss | |
5e681ec4 PB |
1450 | || (!info->shared && !htab->srelbss)) |
1451 | abort (); | |
1452 | ||
1453 | return TRUE; | |
1454 | } | |
1455 | ||
1456 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
1457 | ||
1458 | static void | |
1459 | elf32_arm_copy_indirect_symbol (const struct elf_backend_data *bed, | |
1460 | struct elf_link_hash_entry *dir, | |
1461 | struct elf_link_hash_entry *ind) | |
1462 | { | |
1463 | struct elf32_arm_link_hash_entry *edir, *eind; | |
1464 | ||
1465 | edir = (struct elf32_arm_link_hash_entry *) dir; | |
1466 | eind = (struct elf32_arm_link_hash_entry *) ind; | |
1467 | ||
1468 | if (eind->relocs_copied != NULL) | |
1469 | { | |
1470 | if (edir->relocs_copied != NULL) | |
1471 | { | |
1472 | struct elf32_arm_relocs_copied **pp; | |
1473 | struct elf32_arm_relocs_copied *p; | |
1474 | ||
1475 | if (ind->root.type == bfd_link_hash_indirect) | |
1476 | abort (); | |
1477 | ||
1478 | /* Add reloc counts against the weak sym to the strong sym | |
1479 | list. Merge any entries against the same section. */ | |
1480 | for (pp = &eind->relocs_copied; (p = *pp) != NULL; ) | |
1481 | { | |
1482 | struct elf32_arm_relocs_copied *q; | |
1483 | ||
1484 | for (q = edir->relocs_copied; q != NULL; q = q->next) | |
1485 | if (q->section == p->section) | |
1486 | { | |
ba93b8ac | 1487 | q->pc_count += p->pc_count; |
5e681ec4 PB |
1488 | q->count += p->count; |
1489 | *pp = p->next; | |
1490 | break; | |
1491 | } | |
1492 | if (q == NULL) | |
1493 | pp = &p->next; | |
1494 | } | |
1495 | *pp = edir->relocs_copied; | |
1496 | } | |
1497 | ||
1498 | edir->relocs_copied = eind->relocs_copied; | |
1499 | eind->relocs_copied = NULL; | |
1500 | } | |
1501 | ||
b7693d02 DJ |
1502 | /* If the direct symbol already has an associated PLT entry, the |
1503 | indirect symbol should not. If it doesn't, swap refcount information | |
1504 | from the indirect symbol. */ | |
1505 | if (edir->plt_thumb_refcount == 0) | |
1506 | { | |
1507 | edir->plt_thumb_refcount = eind->plt_thumb_refcount; | |
1508 | eind->plt_thumb_refcount = 0; | |
1509 | } | |
1510 | else | |
1511 | BFD_ASSERT (eind->plt_thumb_refcount == 0); | |
1512 | ||
ba93b8ac DJ |
1513 | if (ind->root.type == bfd_link_hash_indirect |
1514 | && dir->got.refcount <= 0) | |
1515 | { | |
1516 | edir->tls_type = eind->tls_type; | |
1517 | eind->tls_type = GOT_UNKNOWN; | |
1518 | } | |
1519 | ||
5e681ec4 PB |
1520 | _bfd_elf_link_hash_copy_indirect (bed, dir, ind); |
1521 | } | |
1522 | ||
9b485d32 | 1523 | /* Create an ARM elf linker hash table. */ |
252b5132 RH |
1524 | |
1525 | static struct bfd_link_hash_table * | |
57e8b36a | 1526 | elf32_arm_link_hash_table_create (bfd *abfd) |
252b5132 RH |
1527 | { |
1528 | struct elf32_arm_link_hash_table *ret; | |
dc810e39 | 1529 | bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table); |
252b5132 | 1530 | |
57e8b36a NC |
1531 | ret = bfd_malloc (amt); |
1532 | if (ret == NULL) | |
252b5132 RH |
1533 | return NULL; |
1534 | ||
57e8b36a | 1535 | if (!_bfd_elf_link_hash_table_init (& ret->root, abfd, |
780a67af | 1536 | elf32_arm_link_hash_newfunc)) |
252b5132 | 1537 | { |
e2d34d7d | 1538 | free (ret); |
252b5132 RH |
1539 | return NULL; |
1540 | } | |
1541 | ||
5e681ec4 PB |
1542 | ret->sgot = NULL; |
1543 | ret->sgotplt = NULL; | |
1544 | ret->srelgot = NULL; | |
1545 | ret->splt = NULL; | |
1546 | ret->srelplt = NULL; | |
1547 | ret->sdynbss = NULL; | |
1548 | ret->srelbss = NULL; | |
252b5132 RH |
1549 | ret->thumb_glue_size = 0; |
1550 | ret->arm_glue_size = 0; | |
1551 | ret->bfd_of_glue_owner = NULL; | |
e489d0ae | 1552 | ret->byteswap_code = 0; |
9c504268 | 1553 | ret->target1_is_rel = 0; |
eb043451 | 1554 | ret->target2_reloc = R_ARM_NONE; |
e5a52504 MM |
1555 | #ifdef FOUR_WORD_PLT |
1556 | ret->plt_header_size = 16; | |
1557 | ret->plt_entry_size = 16; | |
1558 | #else | |
1559 | ret->plt_header_size = 20; | |
1560 | ret->plt_entry_size = 12; | |
1561 | #endif | |
1562 | ret->symbian_p = 0; | |
4e7fd91e | 1563 | ret->use_rel = 1; |
5e681ec4 | 1564 | ret->sym_sec.abfd = NULL; |
b7693d02 | 1565 | ret->obfd = abfd; |
ba93b8ac | 1566 | ret->tls_ldm_got.refcount = 0; |
252b5132 RH |
1567 | |
1568 | return &ret->root.root; | |
1569 | } | |
1570 | ||
9b485d32 NC |
1571 | /* Locate the Thumb encoded calling stub for NAME. */ |
1572 | ||
252b5132 | 1573 | static struct elf_link_hash_entry * |
57e8b36a NC |
1574 | find_thumb_glue (struct bfd_link_info *link_info, |
1575 | const char *name, | |
1576 | bfd *input_bfd) | |
252b5132 RH |
1577 | { |
1578 | char *tmp_name; | |
1579 | struct elf_link_hash_entry *hash; | |
1580 | struct elf32_arm_link_hash_table *hash_table; | |
1581 | ||
1582 | /* We need a pointer to the armelf specific hash table. */ | |
1583 | hash_table = elf32_arm_hash_table (link_info); | |
1584 | ||
57e8b36a NC |
1585 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
1586 | + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1); | |
252b5132 RH |
1587 | |
1588 | BFD_ASSERT (tmp_name); | |
1589 | ||
1590 | sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); | |
1591 | ||
1592 | hash = elf_link_hash_lookup | |
b34976b6 | 1593 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 RH |
1594 | |
1595 | if (hash == NULL) | |
1596 | /* xgettext:c-format */ | |
d003868e AM |
1597 | (*_bfd_error_handler) (_("%B: unable to find THUMB glue '%s' for `%s'"), |
1598 | input_bfd, tmp_name, name); | |
252b5132 RH |
1599 | |
1600 | free (tmp_name); | |
1601 | ||
1602 | return hash; | |
1603 | } | |
1604 | ||
9b485d32 NC |
1605 | /* Locate the ARM encoded calling stub for NAME. */ |
1606 | ||
252b5132 | 1607 | static struct elf_link_hash_entry * |
57e8b36a NC |
1608 | find_arm_glue (struct bfd_link_info *link_info, |
1609 | const char *name, | |
1610 | bfd *input_bfd) | |
252b5132 RH |
1611 | { |
1612 | char *tmp_name; | |
1613 | struct elf_link_hash_entry *myh; | |
1614 | struct elf32_arm_link_hash_table *hash_table; | |
1615 | ||
1616 | /* We need a pointer to the elfarm specific hash table. */ | |
1617 | hash_table = elf32_arm_hash_table (link_info); | |
1618 | ||
57e8b36a NC |
1619 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
1620 | + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1); | |
252b5132 RH |
1621 | |
1622 | BFD_ASSERT (tmp_name); | |
1623 | ||
1624 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); | |
1625 | ||
1626 | myh = elf_link_hash_lookup | |
b34976b6 | 1627 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 RH |
1628 | |
1629 | if (myh == NULL) | |
1630 | /* xgettext:c-format */ | |
d003868e AM |
1631 | (*_bfd_error_handler) (_("%B: unable to find ARM glue '%s' for `%s'"), |
1632 | input_bfd, tmp_name, name); | |
252b5132 RH |
1633 | |
1634 | free (tmp_name); | |
1635 | ||
1636 | return myh; | |
1637 | } | |
1638 | ||
9b485d32 | 1639 | /* ARM->Thumb glue: |
252b5132 RH |
1640 | |
1641 | .arm | |
1642 | __func_from_arm: | |
1643 | ldr r12, __func_addr | |
1644 | bx r12 | |
1645 | __func_addr: | |
9b485d32 | 1646 | .word func @ behave as if you saw a ARM_32 reloc. */ |
252b5132 RH |
1647 | |
1648 | #define ARM2THUMB_GLUE_SIZE 12 | |
1649 | static const insn32 a2t1_ldr_insn = 0xe59fc000; | |
1650 | static const insn32 a2t2_bx_r12_insn = 0xe12fff1c; | |
1651 | static const insn32 a2t3_func_addr_insn = 0x00000001; | |
1652 | ||
9b485d32 | 1653 | /* Thumb->ARM: Thumb->(non-interworking aware) ARM |
252b5132 RH |
1654 | |
1655 | .thumb .thumb | |
1656 | .align 2 .align 2 | |
1657 | __func_from_thumb: __func_from_thumb: | |
1658 | bx pc push {r6, lr} | |
1659 | nop ldr r6, __func_addr | |
1660 | .arm mov lr, pc | |
1661 | __func_change_to_arm: bx r6 | |
1662 | b func .arm | |
1663 | __func_back_to_thumb: | |
1664 | ldmia r13! {r6, lr} | |
1665 | bx lr | |
1666 | __func_addr: | |
9b485d32 | 1667 | .word func */ |
252b5132 RH |
1668 | |
1669 | #define THUMB2ARM_GLUE_SIZE 8 | |
1670 | static const insn16 t2a1_bx_pc_insn = 0x4778; | |
1671 | static const insn16 t2a2_noop_insn = 0x46c0; | |
1672 | static const insn32 t2a3_b_insn = 0xea000000; | |
1673 | ||
7e392df6 | 1674 | #ifndef ELFARM_NABI_C_INCLUDED |
b34976b6 | 1675 | bfd_boolean |
57e8b36a | 1676 | bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info * info) |
252b5132 RH |
1677 | { |
1678 | asection * s; | |
1679 | bfd_byte * foo; | |
1680 | struct elf32_arm_link_hash_table * globals; | |
1681 | ||
1682 | globals = elf32_arm_hash_table (info); | |
1683 | ||
1684 | BFD_ASSERT (globals != NULL); | |
1685 | ||
1686 | if (globals->arm_glue_size != 0) | |
1687 | { | |
1688 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
1689 | ||
dc810e39 AM |
1690 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, |
1691 | ARM2THUMB_GLUE_SECTION_NAME); | |
252b5132 RH |
1692 | |
1693 | BFD_ASSERT (s != NULL); | |
1694 | ||
57e8b36a | 1695 | foo = bfd_alloc (globals->bfd_of_glue_owner, globals->arm_glue_size); |
252b5132 | 1696 | |
eea6121a | 1697 | s->size = globals->arm_glue_size; |
252b5132 RH |
1698 | s->contents = foo; |
1699 | } | |
1700 | ||
1701 | if (globals->thumb_glue_size != 0) | |
1702 | { | |
1703 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
1704 | ||
1705 | s = bfd_get_section_by_name | |
1706 | (globals->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME); | |
1707 | ||
1708 | BFD_ASSERT (s != NULL); | |
1709 | ||
57e8b36a | 1710 | foo = bfd_alloc (globals->bfd_of_glue_owner, globals->thumb_glue_size); |
252b5132 | 1711 | |
eea6121a | 1712 | s->size = globals->thumb_glue_size; |
252b5132 RH |
1713 | s->contents = foo; |
1714 | } | |
1715 | ||
b34976b6 | 1716 | return TRUE; |
252b5132 RH |
1717 | } |
1718 | ||
1719 | static void | |
57e8b36a NC |
1720 | record_arm_to_thumb_glue (struct bfd_link_info * link_info, |
1721 | struct elf_link_hash_entry * h) | |
252b5132 RH |
1722 | { |
1723 | const char * name = h->root.root.string; | |
63b0f745 | 1724 | asection * s; |
252b5132 RH |
1725 | char * tmp_name; |
1726 | struct elf_link_hash_entry * myh; | |
14a793b2 | 1727 | struct bfd_link_hash_entry * bh; |
252b5132 | 1728 | struct elf32_arm_link_hash_table * globals; |
dc810e39 | 1729 | bfd_vma val; |
252b5132 RH |
1730 | |
1731 | globals = elf32_arm_hash_table (link_info); | |
1732 | ||
1733 | BFD_ASSERT (globals != NULL); | |
1734 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
1735 | ||
1736 | s = bfd_get_section_by_name | |
1737 | (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME); | |
1738 | ||
252b5132 RH |
1739 | BFD_ASSERT (s != NULL); |
1740 | ||
57e8b36a | 1741 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1); |
252b5132 RH |
1742 | |
1743 | BFD_ASSERT (tmp_name); | |
1744 | ||
1745 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); | |
1746 | ||
1747 | myh = elf_link_hash_lookup | |
b34976b6 | 1748 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 RH |
1749 | |
1750 | if (myh != NULL) | |
1751 | { | |
9b485d32 | 1752 | /* We've already seen this guy. */ |
252b5132 | 1753 | free (tmp_name); |
9b485d32 | 1754 | return; |
252b5132 RH |
1755 | } |
1756 | ||
57e8b36a NC |
1757 | /* The only trick here is using hash_table->arm_glue_size as the value. |
1758 | Even though the section isn't allocated yet, this is where we will be | |
1759 | putting it. */ | |
14a793b2 | 1760 | bh = NULL; |
dc810e39 AM |
1761 | val = globals->arm_glue_size + 1; |
1762 | _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner, | |
1763 | tmp_name, BSF_GLOBAL, s, val, | |
b34976b6 | 1764 | NULL, TRUE, FALSE, &bh); |
252b5132 | 1765 | |
b7693d02 DJ |
1766 | myh = (struct elf_link_hash_entry *) bh; |
1767 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
1768 | myh->forced_local = 1; | |
1769 | ||
252b5132 RH |
1770 | free (tmp_name); |
1771 | ||
1772 | globals->arm_glue_size += ARM2THUMB_GLUE_SIZE; | |
1773 | ||
1774 | return; | |
1775 | } | |
1776 | ||
1777 | static void | |
57e8b36a NC |
1778 | record_thumb_to_arm_glue (struct bfd_link_info *link_info, |
1779 | struct elf_link_hash_entry *h) | |
252b5132 RH |
1780 | { |
1781 | const char *name = h->root.root.string; | |
63b0f745 | 1782 | asection *s; |
252b5132 RH |
1783 | char *tmp_name; |
1784 | struct elf_link_hash_entry *myh; | |
14a793b2 | 1785 | struct bfd_link_hash_entry *bh; |
252b5132 | 1786 | struct elf32_arm_link_hash_table *hash_table; |
dc810e39 | 1787 | bfd_vma val; |
252b5132 RH |
1788 | |
1789 | hash_table = elf32_arm_hash_table (link_info); | |
1790 | ||
1791 | BFD_ASSERT (hash_table != NULL); | |
1792 | BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL); | |
1793 | ||
1794 | s = bfd_get_section_by_name | |
1795 | (hash_table->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME); | |
1796 | ||
1797 | BFD_ASSERT (s != NULL); | |
1798 | ||
57e8b36a NC |
1799 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
1800 | + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1); | |
252b5132 RH |
1801 | |
1802 | BFD_ASSERT (tmp_name); | |
1803 | ||
1804 | sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); | |
1805 | ||
1806 | myh = elf_link_hash_lookup | |
b34976b6 | 1807 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 RH |
1808 | |
1809 | if (myh != NULL) | |
1810 | { | |
9b485d32 | 1811 | /* We've already seen this guy. */ |
252b5132 | 1812 | free (tmp_name); |
9b485d32 | 1813 | return; |
252b5132 RH |
1814 | } |
1815 | ||
14a793b2 | 1816 | bh = NULL; |
dc810e39 AM |
1817 | val = hash_table->thumb_glue_size + 1; |
1818 | _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, | |
1819 | tmp_name, BSF_GLOBAL, s, val, | |
b34976b6 | 1820 | NULL, TRUE, FALSE, &bh); |
252b5132 | 1821 | |
9b485d32 | 1822 | /* If we mark it 'Thumb', the disassembler will do a better job. */ |
14a793b2 | 1823 | myh = (struct elf_link_hash_entry *) bh; |
b7693d02 DJ |
1824 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC); |
1825 | myh->forced_local = 1; | |
252b5132 RH |
1826 | |
1827 | free (tmp_name); | |
1828 | ||
252b5132 RH |
1829 | #define CHANGE_TO_ARM "__%s_change_to_arm" |
1830 | #define BACK_FROM_ARM "__%s_back_from_arm" | |
1831 | ||
9b485d32 | 1832 | /* Allocate another symbol to mark where we switch to Arm mode. */ |
57e8b36a NC |
1833 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
1834 | + strlen (CHANGE_TO_ARM) + 1); | |
252b5132 RH |
1835 | |
1836 | BFD_ASSERT (tmp_name); | |
1837 | ||
1838 | sprintf (tmp_name, CHANGE_TO_ARM, name); | |
1839 | ||
14a793b2 | 1840 | bh = NULL; |
dc810e39 AM |
1841 | val = hash_table->thumb_glue_size + 4, |
1842 | _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, | |
1843 | tmp_name, BSF_LOCAL, s, val, | |
b34976b6 | 1844 | NULL, TRUE, FALSE, &bh); |
252b5132 RH |
1845 | |
1846 | free (tmp_name); | |
1847 | ||
1848 | hash_table->thumb_glue_size += THUMB2ARM_GLUE_SIZE; | |
1849 | ||
1850 | return; | |
1851 | } | |
1852 | ||
8afb0e02 NC |
1853 | /* Add the glue sections to ABFD. This function is called from the |
1854 | linker scripts in ld/emultempl/{armelf}.em. */ | |
9b485d32 | 1855 | |
b34976b6 | 1856 | bfd_boolean |
57e8b36a NC |
1857 | bfd_elf32_arm_add_glue_sections_to_bfd (bfd *abfd, |
1858 | struct bfd_link_info *info) | |
252b5132 | 1859 | { |
252b5132 RH |
1860 | flagword flags; |
1861 | asection *sec; | |
1862 | ||
8afb0e02 NC |
1863 | /* If we are only performing a partial |
1864 | link do not bother adding the glue. */ | |
1049f94e | 1865 | if (info->relocatable) |
b34976b6 | 1866 | return TRUE; |
252b5132 | 1867 | |
252b5132 RH |
1868 | sec = bfd_get_section_by_name (abfd, ARM2THUMB_GLUE_SECTION_NAME); |
1869 | ||
1870 | if (sec == NULL) | |
1871 | { | |
57db232e NC |
1872 | /* Note: we do not include the flag SEC_LINKER_CREATED, as this |
1873 | will prevent elf_link_input_bfd() from processing the contents | |
1874 | of this section. */ | |
811b4bf6 | 1875 | flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_CODE | SEC_READONLY; |
252b5132 RH |
1876 | |
1877 | sec = bfd_make_section (abfd, ARM2THUMB_GLUE_SECTION_NAME); | |
1878 | ||
1879 | if (sec == NULL | |
1880 | || !bfd_set_section_flags (abfd, sec, flags) | |
1881 | || !bfd_set_section_alignment (abfd, sec, 2)) | |
b34976b6 | 1882 | return FALSE; |
9a5aca8c | 1883 | |
57db232e NC |
1884 | /* Set the gc mark to prevent the section from being removed by garbage |
1885 | collection, despite the fact that no relocs refer to this section. */ | |
1886 | sec->gc_mark = 1; | |
252b5132 RH |
1887 | } |
1888 | ||
1889 | sec = bfd_get_section_by_name (abfd, THUMB2ARM_GLUE_SECTION_NAME); | |
1890 | ||
1891 | if (sec == NULL) | |
1892 | { | |
57e8b36a NC |
1893 | flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
1894 | | SEC_CODE | SEC_READONLY; | |
252b5132 RH |
1895 | |
1896 | sec = bfd_make_section (abfd, THUMB2ARM_GLUE_SECTION_NAME); | |
1897 | ||
1898 | if (sec == NULL | |
1899 | || !bfd_set_section_flags (abfd, sec, flags) | |
1900 | || !bfd_set_section_alignment (abfd, sec, 2)) | |
b34976b6 | 1901 | return FALSE; |
9a5aca8c | 1902 | |
57db232e | 1903 | sec->gc_mark = 1; |
252b5132 RH |
1904 | } |
1905 | ||
b34976b6 | 1906 | return TRUE; |
8afb0e02 NC |
1907 | } |
1908 | ||
1909 | /* Select a BFD to be used to hold the sections used by the glue code. | |
1910 | This function is called from the linker scripts in ld/emultempl/ | |
1911 | {armelf/pe}.em */ | |
1912 | ||
b34976b6 | 1913 | bfd_boolean |
57e8b36a | 1914 | bfd_elf32_arm_get_bfd_for_interworking (bfd *abfd, struct bfd_link_info *info) |
8afb0e02 NC |
1915 | { |
1916 | struct elf32_arm_link_hash_table *globals; | |
1917 | ||
1918 | /* If we are only performing a partial link | |
1919 | do not bother getting a bfd to hold the glue. */ | |
1049f94e | 1920 | if (info->relocatable) |
b34976b6 | 1921 | return TRUE; |
8afb0e02 | 1922 | |
b7693d02 DJ |
1923 | /* Make sure we don't attach the glue sections to a dynamic object. */ |
1924 | BFD_ASSERT (!(abfd->flags & DYNAMIC)); | |
1925 | ||
8afb0e02 NC |
1926 | globals = elf32_arm_hash_table (info); |
1927 | ||
1928 | BFD_ASSERT (globals != NULL); | |
1929 | ||
1930 | if (globals->bfd_of_glue_owner != NULL) | |
b34976b6 | 1931 | return TRUE; |
8afb0e02 | 1932 | |
252b5132 RH |
1933 | /* Save the bfd for later use. */ |
1934 | globals->bfd_of_glue_owner = abfd; | |
cedb70c5 | 1935 | |
b34976b6 | 1936 | return TRUE; |
252b5132 RH |
1937 | } |
1938 | ||
b34976b6 | 1939 | bfd_boolean |
57e8b36a NC |
1940 | bfd_elf32_arm_process_before_allocation (bfd *abfd, |
1941 | struct bfd_link_info *link_info, | |
eb043451 | 1942 | int byteswap_code) |
252b5132 RH |
1943 | { |
1944 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 1945 | Elf_Internal_Rela *internal_relocs = NULL; |
252b5132 RH |
1946 | Elf_Internal_Rela *irel, *irelend; |
1947 | bfd_byte *contents = NULL; | |
252b5132 RH |
1948 | |
1949 | asection *sec; | |
1950 | struct elf32_arm_link_hash_table *globals; | |
1951 | ||
1952 | /* If we are only performing a partial link do not bother | |
1953 | to construct any glue. */ | |
1049f94e | 1954 | if (link_info->relocatable) |
b34976b6 | 1955 | return TRUE; |
252b5132 RH |
1956 | |
1957 | /* Here we have a bfd that is to be included on the link. We have a hook | |
1958 | to do reloc rummaging, before section sizes are nailed down. */ | |
252b5132 RH |
1959 | globals = elf32_arm_hash_table (link_info); |
1960 | ||
1961 | BFD_ASSERT (globals != NULL); | |
1962 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
1963 | ||
e489d0ae PB |
1964 | if (byteswap_code && !bfd_big_endian (abfd)) |
1965 | { | |
d003868e AM |
1966 | _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."), |
1967 | abfd); | |
e489d0ae PB |
1968 | return FALSE; |
1969 | } | |
1970 | globals->byteswap_code = byteswap_code; | |
f21f3fe0 | 1971 | |
252b5132 RH |
1972 | /* Rummage around all the relocs and map the glue vectors. */ |
1973 | sec = abfd->sections; | |
1974 | ||
1975 | if (sec == NULL) | |
b34976b6 | 1976 | return TRUE; |
252b5132 RH |
1977 | |
1978 | for (; sec != NULL; sec = sec->next) | |
1979 | { | |
1980 | if (sec->reloc_count == 0) | |
1981 | continue; | |
1982 | ||
1983 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
252b5132 | 1984 | |
9b485d32 | 1985 | /* Load the relocs. */ |
6cdc0ccc | 1986 | internal_relocs |
57e8b36a | 1987 | = _bfd_elf_link_read_relocs (abfd, sec, (void *) NULL, |
45d6a902 | 1988 | (Elf_Internal_Rela *) NULL, FALSE); |
252b5132 | 1989 | |
6cdc0ccc AM |
1990 | if (internal_relocs == NULL) |
1991 | goto error_return; | |
252b5132 | 1992 | |
6cdc0ccc AM |
1993 | irelend = internal_relocs + sec->reloc_count; |
1994 | for (irel = internal_relocs; irel < irelend; irel++) | |
252b5132 RH |
1995 | { |
1996 | long r_type; | |
1997 | unsigned long r_index; | |
252b5132 RH |
1998 | |
1999 | struct elf_link_hash_entry *h; | |
2000 | ||
2001 | r_type = ELF32_R_TYPE (irel->r_info); | |
2002 | r_index = ELF32_R_SYM (irel->r_info); | |
2003 | ||
9b485d32 | 2004 | /* These are the only relocation types we care about. */ |
ba96a88f | 2005 | if ( r_type != R_ARM_PC24 |
b7693d02 | 2006 | && r_type != R_ARM_PLT32 |
5b5bb741 PB |
2007 | #ifndef OLD_ARM_ABI |
2008 | && r_type != R_ARM_CALL | |
2009 | && r_type != R_ARM_JUMP24 | |
2010 | #endif | |
252b5132 RH |
2011 | && r_type != R_ARM_THM_PC22) |
2012 | continue; | |
2013 | ||
2014 | /* Get the section contents if we haven't done so already. */ | |
2015 | if (contents == NULL) | |
2016 | { | |
2017 | /* Get cached copy if it exists. */ | |
2018 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
2019 | contents = elf_section_data (sec)->this_hdr.contents; | |
2020 | else | |
2021 | { | |
2022 | /* Go get them off disk. */ | |
57e8b36a | 2023 | if (! bfd_malloc_and_get_section (abfd, sec, &contents)) |
252b5132 RH |
2024 | goto error_return; |
2025 | } | |
2026 | } | |
2027 | ||
a7c10850 | 2028 | /* If the relocation is not against a symbol it cannot concern us. */ |
252b5132 RH |
2029 | h = NULL; |
2030 | ||
9b485d32 | 2031 | /* We don't care about local symbols. */ |
252b5132 RH |
2032 | if (r_index < symtab_hdr->sh_info) |
2033 | continue; | |
2034 | ||
9b485d32 | 2035 | /* This is an external symbol. */ |
252b5132 RH |
2036 | r_index -= symtab_hdr->sh_info; |
2037 | h = (struct elf_link_hash_entry *) | |
2038 | elf_sym_hashes (abfd)[r_index]; | |
2039 | ||
2040 | /* If the relocation is against a static symbol it must be within | |
2041 | the current section and so cannot be a cross ARM/Thumb relocation. */ | |
2042 | if (h == NULL) | |
2043 | continue; | |
2044 | ||
b7693d02 DJ |
2045 | /* If the call will go through a PLT entry then we do not need |
2046 | glue. */ | |
2047 | if (globals->splt != NULL && h->plt.offset != (bfd_vma) -1) | |
2048 | continue; | |
2049 | ||
252b5132 RH |
2050 | switch (r_type) |
2051 | { | |
2052 | case R_ARM_PC24: | |
5b5bb741 PB |
2053 | #ifndef OLD_ARM_ABI |
2054 | case R_ARM_CALL: | |
2055 | case R_ARM_JUMP24: | |
2056 | #endif | |
252b5132 | 2057 | /* This one is a call from arm code. We need to look up |
2f0ca46a | 2058 | the target of the call. If it is a thumb target, we |
252b5132 | 2059 | insert glue. */ |
252b5132 RH |
2060 | if (ELF_ST_TYPE(h->type) == STT_ARM_TFUNC) |
2061 | record_arm_to_thumb_glue (link_info, h); | |
2062 | break; | |
2063 | ||
2064 | case R_ARM_THM_PC22: | |
f21f3fe0 | 2065 | /* This one is a call from thumb code. We look |
2f0ca46a | 2066 | up the target of the call. If it is not a thumb |
bcbdc74c | 2067 | target, we insert glue. */ |
252b5132 RH |
2068 | if (ELF_ST_TYPE (h->type) != STT_ARM_TFUNC) |
2069 | record_thumb_to_arm_glue (link_info, h); | |
2070 | break; | |
2071 | ||
2072 | default: | |
2073 | break; | |
2074 | } | |
2075 | } | |
6cdc0ccc AM |
2076 | |
2077 | if (contents != NULL | |
2078 | && elf_section_data (sec)->this_hdr.contents != contents) | |
2079 | free (contents); | |
2080 | contents = NULL; | |
2081 | ||
2082 | if (internal_relocs != NULL | |
2083 | && elf_section_data (sec)->relocs != internal_relocs) | |
2084 | free (internal_relocs); | |
2085 | internal_relocs = NULL; | |
252b5132 RH |
2086 | } |
2087 | ||
b34976b6 | 2088 | return TRUE; |
9a5aca8c | 2089 | |
252b5132 | 2090 | error_return: |
6cdc0ccc AM |
2091 | if (contents != NULL |
2092 | && elf_section_data (sec)->this_hdr.contents != contents) | |
2093 | free (contents); | |
2094 | if (internal_relocs != NULL | |
2095 | && elf_section_data (sec)->relocs != internal_relocs) | |
2096 | free (internal_relocs); | |
9a5aca8c | 2097 | |
b34976b6 | 2098 | return FALSE; |
252b5132 | 2099 | } |
7e392df6 | 2100 | #endif |
252b5132 | 2101 | |
eb043451 PB |
2102 | |
2103 | #ifndef OLD_ARM_ABI | |
2104 | /* Set target relocation values needed during linking. */ | |
2105 | ||
2106 | void | |
2107 | bfd_elf32_arm_set_target_relocs (struct bfd_link_info *link_info, | |
2108 | int target1_is_rel, | |
319850b4 JB |
2109 | char * target2_type, |
2110 | int fix_v4bx) | |
eb043451 PB |
2111 | { |
2112 | struct elf32_arm_link_hash_table *globals; | |
2113 | ||
2114 | globals = elf32_arm_hash_table (link_info); | |
2115 | ||
2116 | globals->target1_is_rel = target1_is_rel; | |
2117 | if (strcmp (target2_type, "rel") == 0) | |
2118 | globals->target2_reloc = R_ARM_REL32; | |
eeac373a PB |
2119 | else if (strcmp (target2_type, "abs") == 0) |
2120 | globals->target2_reloc = R_ARM_ABS32; | |
eb043451 PB |
2121 | else if (strcmp (target2_type, "got-rel") == 0) |
2122 | globals->target2_reloc = R_ARM_GOT_PREL; | |
2123 | else | |
2124 | { | |
2125 | _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."), | |
2126 | target2_type); | |
2127 | } | |
319850b4 | 2128 | globals->fix_v4bx = fix_v4bx; |
eb043451 PB |
2129 | } |
2130 | #endif | |
2131 | ||
252b5132 RH |
2132 | /* The thumb form of a long branch is a bit finicky, because the offset |
2133 | encoding is split over two fields, each in it's own instruction. They | |
f21f3fe0 | 2134 | can occur in any order. So given a thumb form of long branch, and an |
252b5132 | 2135 | offset, insert the offset into the thumb branch and return finished |
f21f3fe0 | 2136 | instruction. |
252b5132 | 2137 | |
f21f3fe0 | 2138 | It takes two thumb instructions to encode the target address. Each has |
4cc11e76 | 2139 | 11 bits to invest. The upper 11 bits are stored in one (identified by |
f21f3fe0 UD |
2140 | H-0.. see below), the lower 11 bits are stored in the other (identified |
2141 | by H-1). | |
252b5132 | 2142 | |
f21f3fe0 | 2143 | Combine together and shifted left by 1 (it's a half word address) and |
252b5132 RH |
2144 | there you have it. |
2145 | ||
2146 | Op: 1111 = F, | |
2147 | H-0, upper address-0 = 000 | |
2148 | Op: 1111 = F, | |
2149 | H-1, lower address-0 = 800 | |
2150 | ||
f21f3fe0 | 2151 | They can be ordered either way, but the arm tools I've seen always put |
252b5132 RH |
2152 | the lower one first. It probably doesn't matter. krk@cygnus.com |
2153 | ||
2154 | XXX: Actually the order does matter. The second instruction (H-1) | |
2155 | moves the computed address into the PC, so it must be the second one | |
2156 | in the sequence. The problem, however is that whilst little endian code | |
2157 | stores the instructions in HI then LOW order, big endian code does the | |
dfc5f959 | 2158 | reverse. nickc@cygnus.com. */ |
252b5132 | 2159 | |
dfc5f959 NC |
2160 | #define LOW_HI_ORDER 0xF800F000 |
2161 | #define HI_LOW_ORDER 0xF000F800 | |
252b5132 RH |
2162 | |
2163 | static insn32 | |
57e8b36a | 2164 | insert_thumb_branch (insn32 br_insn, int rel_off) |
252b5132 RH |
2165 | { |
2166 | unsigned int low_bits; | |
2167 | unsigned int high_bits; | |
2168 | ||
252b5132 RH |
2169 | BFD_ASSERT ((rel_off & 1) != 1); |
2170 | ||
dfc5f959 NC |
2171 | rel_off >>= 1; /* Half word aligned address. */ |
2172 | low_bits = rel_off & 0x000007FF; /* The bottom 11 bits. */ | |
2173 | high_bits = (rel_off >> 11) & 0x000007FF; /* The top 11 bits. */ | |
252b5132 RH |
2174 | |
2175 | if ((br_insn & LOW_HI_ORDER) == LOW_HI_ORDER) | |
2176 | br_insn = LOW_HI_ORDER | (low_bits << 16) | high_bits; | |
2177 | else if ((br_insn & HI_LOW_ORDER) == HI_LOW_ORDER) | |
2178 | br_insn = HI_LOW_ORDER | (high_bits << 16) | low_bits; | |
2179 | else | |
9b485d32 | 2180 | /* FIXME: abort is probably not the right call. krk@cygnus.com */ |
57e8b36a | 2181 | abort (); /* Error - not a valid branch instruction form. */ |
252b5132 | 2182 | |
252b5132 RH |
2183 | return br_insn; |
2184 | } | |
2185 | ||
9b485d32 NC |
2186 | /* Thumb code calling an ARM function. */ |
2187 | ||
252b5132 | 2188 | static int |
57e8b36a NC |
2189 | elf32_thumb_to_arm_stub (struct bfd_link_info * info, |
2190 | const char * name, | |
2191 | bfd * input_bfd, | |
2192 | bfd * output_bfd, | |
2193 | asection * input_section, | |
2194 | bfd_byte * hit_data, | |
2195 | asection * sym_sec, | |
2196 | bfd_vma offset, | |
2197 | bfd_signed_vma addend, | |
2198 | bfd_vma val) | |
252b5132 | 2199 | { |
bcbdc74c | 2200 | asection * s = 0; |
dc810e39 | 2201 | bfd_vma my_offset; |
252b5132 RH |
2202 | unsigned long int tmp; |
2203 | long int ret_offset; | |
bcbdc74c NC |
2204 | struct elf_link_hash_entry * myh; |
2205 | struct elf32_arm_link_hash_table * globals; | |
252b5132 RH |
2206 | |
2207 | myh = find_thumb_glue (info, name, input_bfd); | |
2208 | if (myh == NULL) | |
b34976b6 | 2209 | return FALSE; |
252b5132 RH |
2210 | |
2211 | globals = elf32_arm_hash_table (info); | |
2212 | ||
2213 | BFD_ASSERT (globals != NULL); | |
2214 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
2215 | ||
2216 | my_offset = myh->root.u.def.value; | |
2217 | ||
2218 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
2219 | THUMB2ARM_GLUE_SECTION_NAME); | |
2220 | ||
2221 | BFD_ASSERT (s != NULL); | |
2222 | BFD_ASSERT (s->contents != NULL); | |
2223 | BFD_ASSERT (s->output_section != NULL); | |
2224 | ||
2225 | if ((my_offset & 0x01) == 0x01) | |
2226 | { | |
2227 | if (sym_sec != NULL | |
2228 | && sym_sec->owner != NULL | |
2229 | && !INTERWORK_FLAG (sym_sec->owner)) | |
2230 | { | |
8f615d07 | 2231 | (*_bfd_error_handler) |
d003868e AM |
2232 | (_("%B(%s): warning: interworking not enabled.\n" |
2233 | " first occurrence: %B: thumb call to arm"), | |
2234 | sym_sec->owner, input_bfd, name); | |
252b5132 | 2235 | |
b34976b6 | 2236 | return FALSE; |
252b5132 RH |
2237 | } |
2238 | ||
2239 | --my_offset; | |
2240 | myh->root.u.def.value = my_offset; | |
2241 | ||
dc810e39 | 2242 | bfd_put_16 (output_bfd, (bfd_vma) t2a1_bx_pc_insn, |
252b5132 RH |
2243 | s->contents + my_offset); |
2244 | ||
dc810e39 | 2245 | bfd_put_16 (output_bfd, (bfd_vma) t2a2_noop_insn, |
252b5132 RH |
2246 | s->contents + my_offset + 2); |
2247 | ||
2248 | ret_offset = | |
9b485d32 NC |
2249 | /* Address of destination of the stub. */ |
2250 | ((bfd_signed_vma) val) | |
252b5132 | 2251 | - ((bfd_signed_vma) |
57e8b36a NC |
2252 | /* Offset from the start of the current section |
2253 | to the start of the stubs. */ | |
9b485d32 NC |
2254 | (s->output_offset |
2255 | /* Offset of the start of this stub from the start of the stubs. */ | |
2256 | + my_offset | |
2257 | /* Address of the start of the current section. */ | |
2258 | + s->output_section->vma) | |
2259 | /* The branch instruction is 4 bytes into the stub. */ | |
2260 | + 4 | |
2261 | /* ARM branches work from the pc of the instruction + 8. */ | |
2262 | + 8); | |
252b5132 RH |
2263 | |
2264 | bfd_put_32 (output_bfd, | |
dc810e39 | 2265 | (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF), |
252b5132 RH |
2266 | s->contents + my_offset + 4); |
2267 | } | |
2268 | ||
2269 | BFD_ASSERT (my_offset <= globals->thumb_glue_size); | |
2270 | ||
427bfd90 NC |
2271 | /* Now go back and fix up the original BL insn to point to here. */ |
2272 | ret_offset = | |
2273 | /* Address of where the stub is located. */ | |
2274 | (s->output_section->vma + s->output_offset + my_offset) | |
2275 | /* Address of where the BL is located. */ | |
57e8b36a NC |
2276 | - (input_section->output_section->vma + input_section->output_offset |
2277 | + offset) | |
427bfd90 NC |
2278 | /* Addend in the relocation. */ |
2279 | - addend | |
2280 | /* Biassing for PC-relative addressing. */ | |
2281 | - 8; | |
252b5132 RH |
2282 | |
2283 | tmp = bfd_get_32 (input_bfd, hit_data | |
2284 | - input_section->vma); | |
2285 | ||
2286 | bfd_put_32 (output_bfd, | |
dc810e39 | 2287 | (bfd_vma) insert_thumb_branch (tmp, ret_offset), |
252b5132 RH |
2288 | hit_data - input_section->vma); |
2289 | ||
b34976b6 | 2290 | return TRUE; |
252b5132 RH |
2291 | } |
2292 | ||
9b485d32 NC |
2293 | /* Arm code calling a Thumb function. */ |
2294 | ||
252b5132 | 2295 | static int |
57e8b36a NC |
2296 | elf32_arm_to_thumb_stub (struct bfd_link_info * info, |
2297 | const char * name, | |
2298 | bfd * input_bfd, | |
2299 | bfd * output_bfd, | |
2300 | asection * input_section, | |
2301 | bfd_byte * hit_data, | |
2302 | asection * sym_sec, | |
2303 | bfd_vma offset, | |
2304 | bfd_signed_vma addend, | |
2305 | bfd_vma val) | |
252b5132 RH |
2306 | { |
2307 | unsigned long int tmp; | |
dc810e39 | 2308 | bfd_vma my_offset; |
bcbdc74c | 2309 | asection * s; |
252b5132 | 2310 | long int ret_offset; |
bcbdc74c NC |
2311 | struct elf_link_hash_entry * myh; |
2312 | struct elf32_arm_link_hash_table * globals; | |
252b5132 RH |
2313 | |
2314 | myh = find_arm_glue (info, name, input_bfd); | |
2315 | if (myh == NULL) | |
b34976b6 | 2316 | return FALSE; |
252b5132 RH |
2317 | |
2318 | globals = elf32_arm_hash_table (info); | |
2319 | ||
2320 | BFD_ASSERT (globals != NULL); | |
2321 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
2322 | ||
2323 | my_offset = myh->root.u.def.value; | |
2324 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
2325 | ARM2THUMB_GLUE_SECTION_NAME); | |
2326 | BFD_ASSERT (s != NULL); | |
2327 | BFD_ASSERT (s->contents != NULL); | |
2328 | BFD_ASSERT (s->output_section != NULL); | |
2329 | ||
2330 | if ((my_offset & 0x01) == 0x01) | |
2331 | { | |
2332 | if (sym_sec != NULL | |
2333 | && sym_sec->owner != NULL | |
2334 | && !INTERWORK_FLAG (sym_sec->owner)) | |
2335 | { | |
8f615d07 | 2336 | (*_bfd_error_handler) |
d003868e AM |
2337 | (_("%B(%s): warning: interworking not enabled.\n" |
2338 | " first occurrence: %B: arm call to thumb"), | |
2339 | sym_sec->owner, input_bfd, name); | |
252b5132 | 2340 | } |
9b485d32 | 2341 | |
252b5132 RH |
2342 | --my_offset; |
2343 | myh->root.u.def.value = my_offset; | |
2344 | ||
dc810e39 | 2345 | bfd_put_32 (output_bfd, (bfd_vma) a2t1_ldr_insn, |
252b5132 RH |
2346 | s->contents + my_offset); |
2347 | ||
dc810e39 | 2348 | bfd_put_32 (output_bfd, (bfd_vma) a2t2_bx_r12_insn, |
252b5132 RH |
2349 | s->contents + my_offset + 4); |
2350 | ||
2351 | /* It's a thumb address. Add the low order bit. */ | |
2352 | bfd_put_32 (output_bfd, val | a2t3_func_addr_insn, | |
2353 | s->contents + my_offset + 8); | |
2354 | } | |
2355 | ||
2356 | BFD_ASSERT (my_offset <= globals->arm_glue_size); | |
2357 | ||
2358 | tmp = bfd_get_32 (input_bfd, hit_data); | |
2359 | tmp = tmp & 0xFF000000; | |
2360 | ||
9b485d32 | 2361 | /* Somehow these are both 4 too far, so subtract 8. */ |
dc810e39 AM |
2362 | ret_offset = (s->output_offset |
2363 | + my_offset | |
2364 | + s->output_section->vma | |
2365 | - (input_section->output_offset | |
2366 | + input_section->output_section->vma | |
2367 | + offset + addend) | |
2368 | - 8); | |
9a5aca8c | 2369 | |
252b5132 RH |
2370 | tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF); |
2371 | ||
dc810e39 | 2372 | bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma); |
252b5132 | 2373 | |
b34976b6 | 2374 | return TRUE; |
252b5132 RH |
2375 | } |
2376 | ||
eb043451 PB |
2377 | |
2378 | #ifndef OLD_ARM_ABI | |
2379 | /* Some relocations map to different relocations depending on the | |
2380 | target. Return the real relocation. */ | |
2381 | static int | |
2382 | arm_real_reloc_type (struct elf32_arm_link_hash_table * globals, | |
2383 | int r_type) | |
2384 | { | |
2385 | switch (r_type) | |
2386 | { | |
2387 | case R_ARM_TARGET1: | |
2388 | if (globals->target1_is_rel) | |
2389 | return R_ARM_REL32; | |
2390 | else | |
2391 | return R_ARM_ABS32; | |
2392 | ||
2393 | case R_ARM_TARGET2: | |
2394 | return globals->target2_reloc; | |
2395 | ||
2396 | default: | |
2397 | return r_type; | |
2398 | } | |
2399 | } | |
2400 | #endif /* OLD_ARM_ABI */ | |
2401 | ||
2402 | ||
ba93b8ac DJ |
2403 | /* Return the base VMA address which should be subtracted from real addresses |
2404 | when resolving @dtpoff relocation. | |
2405 | This is PT_TLS segment p_vaddr. */ | |
2406 | ||
2407 | static bfd_vma | |
2408 | dtpoff_base (struct bfd_link_info *info) | |
2409 | { | |
2410 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
2411 | if (elf_hash_table (info)->tls_sec == NULL) | |
2412 | return 0; | |
2413 | return elf_hash_table (info)->tls_sec->vma; | |
2414 | } | |
2415 | ||
2416 | /* Return the relocation value for @tpoff relocation | |
2417 | if STT_TLS virtual address is ADDRESS. */ | |
2418 | ||
2419 | static bfd_vma | |
2420 | tpoff (struct bfd_link_info *info, bfd_vma address) | |
2421 | { | |
2422 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
2423 | bfd_vma base; | |
2424 | ||
2425 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
2426 | if (htab->tls_sec == NULL) | |
2427 | return 0; | |
2428 | base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power); | |
2429 | return address - htab->tls_sec->vma + base; | |
2430 | } | |
2431 | ||
252b5132 | 2432 | /* Perform a relocation as part of a final link. */ |
9b485d32 | 2433 | |
252b5132 | 2434 | static bfd_reloc_status_type |
57e8b36a NC |
2435 | elf32_arm_final_link_relocate (reloc_howto_type * howto, |
2436 | bfd * input_bfd, | |
2437 | bfd * output_bfd, | |
2438 | asection * input_section, | |
2439 | bfd_byte * contents, | |
2440 | Elf_Internal_Rela * rel, | |
2441 | bfd_vma value, | |
2442 | struct bfd_link_info * info, | |
2443 | asection * sym_sec, | |
2444 | const char * sym_name, | |
2445 | int sym_flags, | |
0945cdfd DJ |
2446 | struct elf_link_hash_entry * h, |
2447 | bfd_boolean * unresolved_reloc_p) | |
252b5132 RH |
2448 | { |
2449 | unsigned long r_type = howto->type; | |
2450 | unsigned long r_symndx; | |
2451 | bfd_byte * hit_data = contents + rel->r_offset; | |
2452 | bfd * dynobj = NULL; | |
2453 | Elf_Internal_Shdr * symtab_hdr; | |
2454 | struct elf_link_hash_entry ** sym_hashes; | |
2455 | bfd_vma * local_got_offsets; | |
2456 | asection * sgot = NULL; | |
2457 | asection * splt = NULL; | |
2458 | asection * sreloc = NULL; | |
252b5132 | 2459 | bfd_vma addend; |
ba96a88f NC |
2460 | bfd_signed_vma signed_addend; |
2461 | struct elf32_arm_link_hash_table * globals; | |
f21f3fe0 | 2462 | |
9c504268 PB |
2463 | globals = elf32_arm_hash_table (info); |
2464 | ||
2465 | #ifndef OLD_ARM_ABI | |
2466 | /* Some relocation type map to different relocations depending on the | |
2467 | target. We pick the right one here. */ | |
eb043451 PB |
2468 | r_type = arm_real_reloc_type (globals, r_type); |
2469 | if (r_type != howto->type) | |
2470 | howto = elf32_arm_howto_from_type (r_type); | |
9c504268 PB |
2471 | #endif /* OLD_ARM_ABI */ |
2472 | ||
cac15327 NC |
2473 | /* If the start address has been set, then set the EF_ARM_HASENTRY |
2474 | flag. Setting this more than once is redundant, but the cost is | |
2475 | not too high, and it keeps the code simple. | |
99e4ae17 | 2476 | |
cac15327 NC |
2477 | The test is done here, rather than somewhere else, because the |
2478 | start address is only set just before the final link commences. | |
2479 | ||
2480 | Note - if the user deliberately sets a start address of 0, the | |
2481 | flag will not be set. */ | |
2482 | if (bfd_get_start_address (output_bfd) != 0) | |
2483 | elf_elfheader (output_bfd)->e_flags |= EF_ARM_HASENTRY; | |
99e4ae17 | 2484 | |
252b5132 RH |
2485 | dynobj = elf_hash_table (info)->dynobj; |
2486 | if (dynobj) | |
2487 | { | |
2488 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
2489 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
2490 | } | |
2491 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; | |
2492 | sym_hashes = elf_sym_hashes (input_bfd); | |
2493 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
2494 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2495 | ||
4e7fd91e | 2496 | if (globals->use_rel) |
ba96a88f | 2497 | { |
4e7fd91e PB |
2498 | addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask; |
2499 | ||
2500 | if (addend & ((howto->src_mask + 1) >> 1)) | |
2501 | { | |
2502 | signed_addend = -1; | |
2503 | signed_addend &= ~ howto->src_mask; | |
2504 | signed_addend |= addend; | |
2505 | } | |
2506 | else | |
2507 | signed_addend = addend; | |
ba96a88f NC |
2508 | } |
2509 | else | |
4e7fd91e | 2510 | addend = signed_addend = rel->r_addend; |
f21f3fe0 | 2511 | |
252b5132 RH |
2512 | switch (r_type) |
2513 | { | |
2514 | case R_ARM_NONE: | |
28a094c2 DJ |
2515 | /* We don't need to find a value for this symbol. It's just a |
2516 | marker. */ | |
2517 | *unresolved_reloc_p = FALSE; | |
252b5132 RH |
2518 | return bfd_reloc_ok; |
2519 | ||
2520 | case R_ARM_PC24: | |
2521 | case R_ARM_ABS32: | |
2522 | case R_ARM_REL32: | |
dfc5f959 | 2523 | #ifndef OLD_ARM_ABI |
5b5bb741 PB |
2524 | case R_ARM_CALL: |
2525 | case R_ARM_JUMP24: | |
dfc5f959 | 2526 | case R_ARM_XPC25: |
eb043451 | 2527 | case R_ARM_PREL31: |
dfc5f959 | 2528 | #endif |
7359ea65 | 2529 | case R_ARM_PLT32: |
5e681ec4 PB |
2530 | /* r_symndx will be zero only for relocs against symbols |
2531 | from removed linkonce sections, or sections discarded by | |
2532 | a linker script. */ | |
2533 | if (r_symndx == 0) | |
2534 | return bfd_reloc_ok; | |
2535 | ||
7359ea65 DJ |
2536 | /* Handle relocations which should use the PLT entry. ABS32/REL32 |
2537 | will use the symbol's value, which may point to a PLT entry, but we | |
2538 | don't need to handle that here. If we created a PLT entry, all | |
2539 | branches in this object should go to it. */ | |
ee06dc07 | 2540 | if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32) |
7359ea65 | 2541 | && h != NULL |
c84cd8ee | 2542 | && splt != NULL |
7359ea65 DJ |
2543 | && h->plt.offset != (bfd_vma) -1) |
2544 | { | |
c84cd8ee DJ |
2545 | /* If we've created a .plt section, and assigned a PLT entry to |
2546 | this function, it should not be known to bind locally. If | |
2547 | it were, we would have cleared the PLT entry. */ | |
7359ea65 DJ |
2548 | BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info, h)); |
2549 | ||
2550 | value = (splt->output_section->vma | |
2551 | + splt->output_offset | |
2552 | + h->plt.offset); | |
0945cdfd | 2553 | *unresolved_reloc_p = FALSE; |
7359ea65 DJ |
2554 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
2555 | contents, rel->r_offset, value, | |
2556 | (bfd_vma) 0); | |
2557 | } | |
2558 | ||
67687978 PB |
2559 | /* When generating a shared object or relocatable executable, these |
2560 | relocations are copied into the output file to be resolved at | |
2561 | run time. */ | |
2562 | if ((info->shared || globals->root.is_relocatable_executable) | |
7359ea65 | 2563 | && (input_section->flags & SEC_ALLOC) |
ee06dc07 PB |
2564 | && (r_type != R_ARM_REL32 |
2565 | || !SYMBOL_CALLS_LOCAL (info, h)) | |
7359ea65 DJ |
2566 | && (h == NULL |
2567 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2568 | || h->root.type != bfd_link_hash_undefweak) | |
2569 | && r_type != R_ARM_PC24 | |
5b5bb741 PB |
2570 | #ifndef OLD_ARM_ABI |
2571 | && r_type != R_ARM_CALL | |
2572 | && r_type != R_ARM_JUMP24 | |
ee06dc07 | 2573 | && r_type != R_ARM_PREL31 |
5b5bb741 | 2574 | #endif |
7359ea65 | 2575 | && r_type != R_ARM_PLT32) |
252b5132 | 2576 | { |
947216bf AM |
2577 | Elf_Internal_Rela outrel; |
2578 | bfd_byte *loc; | |
b34976b6 | 2579 | bfd_boolean skip, relocate; |
f21f3fe0 | 2580 | |
0945cdfd DJ |
2581 | *unresolved_reloc_p = FALSE; |
2582 | ||
252b5132 RH |
2583 | if (sreloc == NULL) |
2584 | { | |
2585 | const char * name; | |
f21f3fe0 | 2586 | |
252b5132 RH |
2587 | name = (bfd_elf_string_from_elf_section |
2588 | (input_bfd, | |
2589 | elf_elfheader (input_bfd)->e_shstrndx, | |
2590 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
2591 | if (name == NULL) | |
2592 | return bfd_reloc_notsupported; | |
f21f3fe0 | 2593 | |
252b5132 RH |
2594 | BFD_ASSERT (strncmp (name, ".rel", 4) == 0 |
2595 | && strcmp (bfd_get_section_name (input_bfd, | |
2596 | input_section), | |
2597 | name + 4) == 0); | |
f21f3fe0 | 2598 | |
252b5132 RH |
2599 | sreloc = bfd_get_section_by_name (dynobj, name); |
2600 | BFD_ASSERT (sreloc != NULL); | |
2601 | } | |
f21f3fe0 | 2602 | |
b34976b6 AM |
2603 | skip = FALSE; |
2604 | relocate = FALSE; | |
f21f3fe0 | 2605 | |
c629eae0 JJ |
2606 | outrel.r_offset = |
2607 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
2608 | rel->r_offset); | |
2609 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 2610 | skip = TRUE; |
0bb2d96a | 2611 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 2612 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
2613 | outrel.r_offset += (input_section->output_section->vma |
2614 | + input_section->output_offset); | |
f21f3fe0 | 2615 | |
252b5132 | 2616 | if (skip) |
0bb2d96a | 2617 | memset (&outrel, 0, sizeof outrel); |
5e681ec4 PB |
2618 | else if (h != NULL |
2619 | && h->dynindx != -1 | |
7359ea65 | 2620 | && (!info->shared |
5e681ec4 | 2621 | || !info->symbolic |
f5385ebf | 2622 | || !h->def_regular)) |
5e681ec4 | 2623 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
252b5132 RH |
2624 | else |
2625 | { | |
a16385dc MM |
2626 | int symbol; |
2627 | ||
5e681ec4 PB |
2628 | /* This symbol is local, or marked to become local. */ |
2629 | relocate = TRUE; | |
b7693d02 DJ |
2630 | if (sym_flags == STT_ARM_TFUNC) |
2631 | value |= 1; | |
a16385dc | 2632 | if (globals->symbian_p) |
6366ff1e MM |
2633 | { |
2634 | /* On Symbian OS, the data segment and text segement | |
2635 | can be relocated independently. Therefore, we | |
2636 | must indicate the segment to which this | |
2637 | relocation is relative. The BPABI allows us to | |
2638 | use any symbol in the right segment; we just use | |
2639 | the section symbol as it is convenient. (We | |
2640 | cannot use the symbol given by "h" directly as it | |
2641 | will not appear in the dynamic symbol table.) */ | |
2642 | symbol = elf_section_data (sym_sec->output_section)->dynindx; | |
2643 | BFD_ASSERT (symbol != 0); | |
2644 | } | |
a16385dc MM |
2645 | else |
2646 | /* On SVR4-ish systems, the dynamic loader cannot | |
2647 | relocate the text and data segments independently, | |
2648 | so the symbol does not matter. */ | |
2649 | symbol = 0; | |
2650 | outrel.r_info = ELF32_R_INFO (symbol, R_ARM_RELATIVE); | |
252b5132 | 2651 | } |
f21f3fe0 | 2652 | |
947216bf AM |
2653 | loc = sreloc->contents; |
2654 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
2655 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); | |
9a5aca8c | 2656 | |
f21f3fe0 | 2657 | /* If this reloc is against an external symbol, we do not want to |
252b5132 | 2658 | fiddle with the addend. Otherwise, we need to include the symbol |
9b485d32 | 2659 | value so that it becomes an addend for the dynamic reloc. */ |
252b5132 RH |
2660 | if (! relocate) |
2661 | return bfd_reloc_ok; | |
9a5aca8c | 2662 | |
f21f3fe0 | 2663 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
252b5132 RH |
2664 | contents, rel->r_offset, value, |
2665 | (bfd_vma) 0); | |
2666 | } | |
2667 | else switch (r_type) | |
2668 | { | |
dfc5f959 NC |
2669 | #ifndef OLD_ARM_ABI |
2670 | case R_ARM_XPC25: /* Arm BLX instruction. */ | |
5b5bb741 PB |
2671 | case R_ARM_CALL: |
2672 | case R_ARM_JUMP24: | |
dfc5f959 NC |
2673 | #endif |
2674 | case R_ARM_PC24: /* Arm B/BL instruction */ | |
7359ea65 | 2675 | case R_ARM_PLT32: |
dfc5f959 NC |
2676 | #ifndef OLD_ARM_ABI |
2677 | if (r_type == R_ARM_XPC25) | |
252b5132 | 2678 | { |
dfc5f959 NC |
2679 | /* Check for Arm calling Arm function. */ |
2680 | /* FIXME: Should we translate the instruction into a BL | |
2681 | instruction instead ? */ | |
2682 | if (sym_flags != STT_ARM_TFUNC) | |
d003868e AM |
2683 | (*_bfd_error_handler) |
2684 | (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."), | |
2685 | input_bfd, | |
2686 | h ? h->root.root.string : "(local)"); | |
dfc5f959 NC |
2687 | } |
2688 | else | |
2689 | #endif | |
2690 | { | |
2691 | /* Check for Arm calling Thumb function. */ | |
2692 | if (sym_flags == STT_ARM_TFUNC) | |
2693 | { | |
57e8b36a NC |
2694 | elf32_arm_to_thumb_stub (info, sym_name, input_bfd, |
2695 | output_bfd, input_section, | |
2696 | hit_data, sym_sec, rel->r_offset, | |
dfc5f959 NC |
2697 | signed_addend, value); |
2698 | return bfd_reloc_ok; | |
2699 | } | |
252b5132 | 2700 | } |
ba96a88f | 2701 | |
dea514f5 PB |
2702 | /* The ARM ELF ABI says that this reloc is computed as: S - P + A |
2703 | where: | |
2704 | S is the address of the symbol in the relocation. | |
2705 | P is address of the instruction being relocated. | |
2706 | A is the addend (extracted from the instruction) in bytes. | |
2707 | ||
2708 | S is held in 'value'. | |
2709 | P is the base address of the section containing the | |
2710 | instruction plus the offset of the reloc into that | |
2711 | section, ie: | |
2712 | (input_section->output_section->vma + | |
2713 | input_section->output_offset + | |
2714 | rel->r_offset). | |
2715 | A is the addend, converted into bytes, ie: | |
2716 | (signed_addend * 4) | |
2717 | ||
2718 | Note: None of these operations have knowledge of the pipeline | |
2719 | size of the processor, thus it is up to the assembler to | |
2720 | encode this information into the addend. */ | |
2721 | value -= (input_section->output_section->vma | |
2722 | + input_section->output_offset); | |
2723 | value -= rel->r_offset; | |
4e7fd91e PB |
2724 | if (globals->use_rel) |
2725 | value += (signed_addend << howto->size); | |
2726 | else | |
2727 | /* RELA addends do not have to be adjusted by howto->size. */ | |
2728 | value += signed_addend; | |
23080146 | 2729 | |
dcb5e6e6 NC |
2730 | signed_addend = value; |
2731 | signed_addend >>= howto->rightshift; | |
9a5aca8c | 2732 | |
59f2c4e7 NC |
2733 | /* It is not an error for an undefined weak reference to be |
2734 | out of range. Any program that branches to such a symbol | |
9a5aca8c AM |
2735 | is going to crash anyway, so there is no point worrying |
2736 | about getting the destination exactly right. */ | |
59f2c4e7 NC |
2737 | if (! h || h->root.type != bfd_link_hash_undefweak) |
2738 | { | |
9b485d32 | 2739 | /* Perform a signed range check. */ |
dcb5e6e6 | 2740 | if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1)) |
59f2c4e7 NC |
2741 | || signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1))) |
2742 | return bfd_reloc_overflow; | |
2743 | } | |
9a5aca8c | 2744 | |
dcb5e6e6 NC |
2745 | #ifndef OLD_ARM_ABI |
2746 | /* If necessary set the H bit in the BLX instruction. */ | |
2747 | if (r_type == R_ARM_XPC25 && ((value & 2) == 2)) | |
2748 | value = (signed_addend & howto->dst_mask) | |
2749 | | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask)) | |
2750 | | (1 << 24); | |
2751 | else | |
2752 | #endif | |
2753 | value = (signed_addend & howto->dst_mask) | |
2754 | | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask)); | |
252b5132 | 2755 | break; |
f21f3fe0 | 2756 | |
252b5132 RH |
2757 | case R_ARM_ABS32: |
2758 | value += addend; | |
2759 | if (sym_flags == STT_ARM_TFUNC) | |
2760 | value |= 1; | |
2761 | break; | |
f21f3fe0 | 2762 | |
252b5132 RH |
2763 | case R_ARM_REL32: |
2764 | value -= (input_section->output_section->vma | |
62efb346 | 2765 | + input_section->output_offset + rel->r_offset); |
252b5132 RH |
2766 | value += addend; |
2767 | break; | |
eb043451 PB |
2768 | |
2769 | #ifndef OLD_ARM_ABI | |
2770 | case R_ARM_PREL31: | |
2771 | value -= (input_section->output_section->vma | |
2772 | + input_section->output_offset + rel->r_offset); | |
2773 | value += signed_addend; | |
2774 | if (! h || h->root.type != bfd_link_hash_undefweak) | |
2775 | { | |
2776 | /* Check for overflow */ | |
2777 | if ((value ^ (value >> 1)) & (1 << 30)) | |
2778 | return bfd_reloc_overflow; | |
2779 | } | |
2780 | value &= 0x7fffffff; | |
2781 | value |= (bfd_get_32 (input_bfd, hit_data) & 0x80000000); | |
2782 | if (sym_flags == STT_ARM_TFUNC) | |
2783 | value |= 1; | |
2784 | break; | |
2785 | #endif | |
252b5132 | 2786 | } |
f21f3fe0 | 2787 | |
252b5132 RH |
2788 | bfd_put_32 (input_bfd, value, hit_data); |
2789 | return bfd_reloc_ok; | |
2790 | ||
2791 | case R_ARM_ABS8: | |
2792 | value += addend; | |
2793 | if ((long) value > 0x7f || (long) value < -0x80) | |
2794 | return bfd_reloc_overflow; | |
2795 | ||
2796 | bfd_put_8 (input_bfd, value, hit_data); | |
2797 | return bfd_reloc_ok; | |
2798 | ||
2799 | case R_ARM_ABS16: | |
2800 | value += addend; | |
2801 | ||
2802 | if ((long) value > 0x7fff || (long) value < -0x8000) | |
2803 | return bfd_reloc_overflow; | |
2804 | ||
2805 | bfd_put_16 (input_bfd, value, hit_data); | |
2806 | return bfd_reloc_ok; | |
2807 | ||
2808 | case R_ARM_ABS12: | |
2809 | /* Support ldr and str instruction for the arm */ | |
2810 | /* Also thumb b (unconditional branch). ??? Really? */ | |
2811 | value += addend; | |
2812 | ||
2813 | if ((long) value > 0x7ff || (long) value < -0x800) | |
2814 | return bfd_reloc_overflow; | |
2815 | ||
2816 | value |= (bfd_get_32 (input_bfd, hit_data) & 0xfffff000); | |
2817 | bfd_put_32 (input_bfd, value, hit_data); | |
2818 | return bfd_reloc_ok; | |
2819 | ||
2820 | case R_ARM_THM_ABS5: | |
9b485d32 | 2821 | /* Support ldr and str instructions for the thumb. */ |
4e7fd91e PB |
2822 | if (globals->use_rel) |
2823 | { | |
2824 | /* Need to refetch addend. */ | |
2825 | addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask; | |
2826 | /* ??? Need to determine shift amount from operand size. */ | |
2827 | addend >>= howto->rightshift; | |
2828 | } | |
252b5132 RH |
2829 | value += addend; |
2830 | ||
2831 | /* ??? Isn't value unsigned? */ | |
2832 | if ((long) value > 0x1f || (long) value < -0x10) | |
2833 | return bfd_reloc_overflow; | |
2834 | ||
2835 | /* ??? Value needs to be properly shifted into place first. */ | |
2836 | value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f; | |
2837 | bfd_put_16 (input_bfd, value, hit_data); | |
2838 | return bfd_reloc_ok; | |
2839 | ||
dfc5f959 NC |
2840 | #ifndef OLD_ARM_ABI |
2841 | case R_ARM_THM_XPC22: | |
2842 | #endif | |
252b5132 | 2843 | case R_ARM_THM_PC22: |
dfc5f959 | 2844 | /* Thumb BL (branch long instruction). */ |
252b5132 | 2845 | { |
b34976b6 AM |
2846 | bfd_vma relocation; |
2847 | bfd_boolean overflow = FALSE; | |
2848 | bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); | |
2849 | bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); | |
df212a7e | 2850 | bfd_signed_vma reloc_signed_max = ((1 << (howto->bitsize - 1)) - 1) >> howto->rightshift; |
ba96a88f | 2851 | bfd_signed_vma reloc_signed_min = ~ reloc_signed_max; |
b34976b6 | 2852 | bfd_vma check; |
252b5132 | 2853 | bfd_signed_vma signed_check; |
252b5132 | 2854 | |
252b5132 RH |
2855 | /* Need to refetch the addend and squish the two 11 bit pieces |
2856 | together. */ | |
4e7fd91e PB |
2857 | if (globals->use_rel) |
2858 | { | |
2859 | bfd_vma upper = upper_insn & 0x7ff; | |
2860 | bfd_vma lower = lower_insn & 0x7ff; | |
2861 | upper = (upper ^ 0x400) - 0x400; /* Sign extend. */ | |
2862 | addend = (upper << 12) | (lower << 1); | |
2863 | signed_addend = addend; | |
2864 | } | |
dfc5f959 NC |
2865 | #ifndef OLD_ARM_ABI |
2866 | if (r_type == R_ARM_THM_XPC22) | |
2867 | { | |
2868 | /* Check for Thumb to Thumb call. */ | |
2869 | /* FIXME: Should we translate the instruction into a BL | |
2870 | instruction instead ? */ | |
2871 | if (sym_flags == STT_ARM_TFUNC) | |
d003868e AM |
2872 | (*_bfd_error_handler) |
2873 | (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."), | |
2874 | input_bfd, | |
2875 | h ? h->root.root.string : "(local)"); | |
dfc5f959 NC |
2876 | } |
2877 | else | |
2878 | #endif | |
252b5132 | 2879 | { |
dfc5f959 NC |
2880 | /* If it is not a call to Thumb, assume call to Arm. |
2881 | If it is a call relative to a section name, then it is not a | |
b7693d02 DJ |
2882 | function call at all, but rather a long jump. Calls through |
2883 | the PLT do not require stubs. */ | |
2884 | if (sym_flags != STT_ARM_TFUNC && sym_flags != STT_SECTION | |
2885 | && (h == NULL || splt == NULL | |
2886 | || h->plt.offset == (bfd_vma) -1)) | |
dfc5f959 NC |
2887 | { |
2888 | if (elf32_thumb_to_arm_stub | |
2889 | (info, sym_name, input_bfd, output_bfd, input_section, | |
2890 | hit_data, sym_sec, rel->r_offset, signed_addend, value)) | |
2891 | return bfd_reloc_ok; | |
2892 | else | |
2893 | return bfd_reloc_dangerous; | |
2894 | } | |
252b5132 | 2895 | } |
f21f3fe0 | 2896 | |
b7693d02 DJ |
2897 | /* Handle calls via the PLT. */ |
2898 | if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1) | |
2899 | { | |
2900 | value = (splt->output_section->vma | |
2901 | + splt->output_offset | |
2902 | + h->plt.offset); | |
2903 | /* Target the Thumb stub before the ARM PLT entry. */ | |
2904 | value -= 4; | |
0945cdfd | 2905 | *unresolved_reloc_p = FALSE; |
b7693d02 DJ |
2906 | } |
2907 | ||
ba96a88f | 2908 | relocation = value + signed_addend; |
f21f3fe0 | 2909 | |
252b5132 | 2910 | relocation -= (input_section->output_section->vma |
ba96a88f NC |
2911 | + input_section->output_offset |
2912 | + rel->r_offset); | |
9a5aca8c | 2913 | |
252b5132 RH |
2914 | check = relocation >> howto->rightshift; |
2915 | ||
2916 | /* If this is a signed value, the rightshift just dropped | |
2917 | leading 1 bits (assuming twos complement). */ | |
2918 | if ((bfd_signed_vma) relocation >= 0) | |
2919 | signed_check = check; | |
2920 | else | |
2921 | signed_check = check | ~((bfd_vma) -1 >> howto->rightshift); | |
2922 | ||
252b5132 | 2923 | /* Assumes two's complement. */ |
ba96a88f | 2924 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) |
b34976b6 | 2925 | overflow = TRUE; |
252b5132 | 2926 | |
df425bc0 | 2927 | #ifndef OLD_ARM_ABI |
4f3c3dbb NC |
2928 | if (r_type == R_ARM_THM_XPC22 |
2929 | && ((lower_insn & 0x1800) == 0x0800)) | |
c62e1cc3 NC |
2930 | /* For a BLX instruction, make sure that the relocation is rounded up |
2931 | to a word boundary. This follows the semantics of the instruction | |
2932 | which specifies that bit 1 of the target address will come from bit | |
2933 | 1 of the base address. */ | |
2934 | relocation = (relocation + 2) & ~ 3; | |
99e4ae17 | 2935 | #endif |
c62e1cc3 NC |
2936 | /* Put RELOCATION back into the insn. */ |
2937 | upper_insn = (upper_insn & ~(bfd_vma) 0x7ff) | ((relocation >> 12) & 0x7ff); | |
2938 | lower_insn = (lower_insn & ~(bfd_vma) 0x7ff) | ((relocation >> 1) & 0x7ff); | |
2939 | ||
252b5132 RH |
2940 | /* Put the relocated value back in the object file: */ |
2941 | bfd_put_16 (input_bfd, upper_insn, hit_data); | |
2942 | bfd_put_16 (input_bfd, lower_insn, hit_data + 2); | |
2943 | ||
2944 | return (overflow ? bfd_reloc_overflow : bfd_reloc_ok); | |
2945 | } | |
2946 | break; | |
2947 | ||
51c5503b | 2948 | case R_ARM_THM_PC11: |
e37c699c | 2949 | case R_ARM_THM_PC9: |
51c5503b NC |
2950 | /* Thumb B (branch) instruction). */ |
2951 | { | |
6cf9e9fe | 2952 | bfd_signed_vma relocation; |
51c5503b NC |
2953 | bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1; |
2954 | bfd_signed_vma reloc_signed_min = ~ reloc_signed_max; | |
51c5503b NC |
2955 | bfd_signed_vma signed_check; |
2956 | ||
4e7fd91e | 2957 | if (globals->use_rel) |
6cf9e9fe | 2958 | { |
4e7fd91e PB |
2959 | /* Need to refetch addend. */ |
2960 | addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask; | |
2961 | if (addend & ((howto->src_mask + 1) >> 1)) | |
2962 | { | |
2963 | signed_addend = -1; | |
2964 | signed_addend &= ~ howto->src_mask; | |
2965 | signed_addend |= addend; | |
2966 | } | |
2967 | else | |
2968 | signed_addend = addend; | |
2969 | /* The value in the insn has been right shifted. We need to | |
2970 | undo this, so that we can perform the address calculation | |
2971 | in terms of bytes. */ | |
2972 | signed_addend <<= howto->rightshift; | |
6cf9e9fe | 2973 | } |
6cf9e9fe | 2974 | relocation = value + signed_addend; |
51c5503b NC |
2975 | |
2976 | relocation -= (input_section->output_section->vma | |
2977 | + input_section->output_offset | |
2978 | + rel->r_offset); | |
2979 | ||
6cf9e9fe NC |
2980 | relocation >>= howto->rightshift; |
2981 | signed_check = relocation; | |
2982 | relocation &= howto->dst_mask; | |
51c5503b | 2983 | relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask)); |
cedb70c5 | 2984 | |
51c5503b NC |
2985 | bfd_put_16 (input_bfd, relocation, hit_data); |
2986 | ||
2987 | /* Assumes two's complement. */ | |
2988 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) | |
2989 | return bfd_reloc_overflow; | |
2990 | ||
2991 | return bfd_reloc_ok; | |
2992 | } | |
cedb70c5 | 2993 | |
1f433d93 | 2994 | #ifndef OLD_ARM_ABI |
8375c36b PB |
2995 | case R_ARM_ALU_PCREL7_0: |
2996 | case R_ARM_ALU_PCREL15_8: | |
2997 | case R_ARM_ALU_PCREL23_15: | |
2998 | { | |
2999 | bfd_vma insn; | |
3000 | bfd_vma relocation; | |
3001 | ||
3002 | insn = bfd_get_32 (input_bfd, hit_data); | |
4e7fd91e PB |
3003 | if (globals->use_rel) |
3004 | { | |
3005 | /* Extract the addend. */ | |
3006 | addend = (insn & 0xff) << ((insn & 0xf00) >> 7); | |
3007 | signed_addend = addend; | |
3008 | } | |
8375c36b PB |
3009 | relocation = value + signed_addend; |
3010 | ||
3011 | relocation -= (input_section->output_section->vma | |
3012 | + input_section->output_offset | |
3013 | + rel->r_offset); | |
3014 | insn = (insn & ~0xfff) | |
3015 | | ((howto->bitpos << 7) & 0xf00) | |
3016 | | ((relocation >> howto->bitpos) & 0xff); | |
3017 | bfd_put_32 (input_bfd, value, hit_data); | |
3018 | } | |
3019 | return bfd_reloc_ok; | |
1f433d93 | 3020 | #endif |
8375c36b | 3021 | |
252b5132 RH |
3022 | case R_ARM_GNU_VTINHERIT: |
3023 | case R_ARM_GNU_VTENTRY: | |
3024 | return bfd_reloc_ok; | |
3025 | ||
3026 | case R_ARM_COPY: | |
3027 | return bfd_reloc_notsupported; | |
3028 | ||
3029 | case R_ARM_GLOB_DAT: | |
3030 | return bfd_reloc_notsupported; | |
3031 | ||
3032 | case R_ARM_JUMP_SLOT: | |
3033 | return bfd_reloc_notsupported; | |
3034 | ||
3035 | case R_ARM_RELATIVE: | |
3036 | return bfd_reloc_notsupported; | |
3037 | ||
3038 | case R_ARM_GOTOFF: | |
3039 | /* Relocation is relative to the start of the | |
3040 | global offset table. */ | |
3041 | ||
3042 | BFD_ASSERT (sgot != NULL); | |
3043 | if (sgot == NULL) | |
3044 | return bfd_reloc_notsupported; | |
9a5aca8c | 3045 | |
cedb70c5 | 3046 | /* If we are addressing a Thumb function, we need to adjust the |
ee29b9fb RE |
3047 | address by one, so that attempts to call the function pointer will |
3048 | correctly interpret it as Thumb code. */ | |
3049 | if (sym_flags == STT_ARM_TFUNC) | |
3050 | value += 1; | |
3051 | ||
252b5132 RH |
3052 | /* Note that sgot->output_offset is not involved in this |
3053 | calculation. We always want the start of .got. If we | |
3054 | define _GLOBAL_OFFSET_TABLE in a different way, as is | |
3055 | permitted by the ABI, we might have to change this | |
9b485d32 | 3056 | calculation. */ |
252b5132 | 3057 | value -= sgot->output_section->vma; |
f21f3fe0 | 3058 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 AJ |
3059 | contents, rel->r_offset, value, |
3060 | (bfd_vma) 0); | |
252b5132 RH |
3061 | |
3062 | case R_ARM_GOTPC: | |
a7c10850 | 3063 | /* Use global offset table as symbol value. */ |
252b5132 | 3064 | BFD_ASSERT (sgot != NULL); |
f21f3fe0 | 3065 | |
252b5132 RH |
3066 | if (sgot == NULL) |
3067 | return bfd_reloc_notsupported; | |
3068 | ||
0945cdfd | 3069 | *unresolved_reloc_p = FALSE; |
252b5132 | 3070 | value = sgot->output_section->vma; |
f21f3fe0 | 3071 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 AJ |
3072 | contents, rel->r_offset, value, |
3073 | (bfd_vma) 0); | |
f21f3fe0 | 3074 | |
252b5132 | 3075 | case R_ARM_GOT32: |
eb043451 PB |
3076 | #ifndef OLD_ARM_ABI |
3077 | case R_ARM_GOT_PREL: | |
3078 | #endif | |
252b5132 | 3079 | /* Relocation is to the entry for this symbol in the |
9b485d32 | 3080 | global offset table. */ |
252b5132 RH |
3081 | if (sgot == NULL) |
3082 | return bfd_reloc_notsupported; | |
f21f3fe0 | 3083 | |
252b5132 RH |
3084 | if (h != NULL) |
3085 | { | |
3086 | bfd_vma off; | |
5e681ec4 | 3087 | bfd_boolean dyn; |
f21f3fe0 | 3088 | |
252b5132 RH |
3089 | off = h->got.offset; |
3090 | BFD_ASSERT (off != (bfd_vma) -1); | |
5e681ec4 | 3091 | dyn = globals->root.dynamic_sections_created; |
f21f3fe0 | 3092 | |
5e681ec4 | 3093 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
50d6c878 | 3094 | || (info->shared |
5e681ec4 PB |
3095 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
3096 | || (ELF_ST_VISIBILITY (h->other) | |
3097 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
3098 | { |
3099 | /* This is actually a static link, or it is a -Bsymbolic link | |
3100 | and the symbol is defined locally. We must initialize this | |
3101 | entry in the global offset table. Since the offset must | |
3102 | always be a multiple of 4, we use the least significant bit | |
3103 | to record whether we have initialized it already. | |
f21f3fe0 | 3104 | |
252b5132 | 3105 | When doing a dynamic link, we create a .rel.got relocation |
f21f3fe0 | 3106 | entry to initialize the value. This is done in the |
9b485d32 | 3107 | finish_dynamic_symbol routine. */ |
252b5132 RH |
3108 | if ((off & 1) != 0) |
3109 | off &= ~1; | |
3110 | else | |
3111 | { | |
ee29b9fb RE |
3112 | /* If we are addressing a Thumb function, we need to |
3113 | adjust the address by one, so that attempts to | |
3114 | call the function pointer will correctly | |
3115 | interpret it as Thumb code. */ | |
3116 | if (sym_flags == STT_ARM_TFUNC) | |
3117 | value |= 1; | |
3118 | ||
252b5132 RH |
3119 | bfd_put_32 (output_bfd, value, sgot->contents + off); |
3120 | h->got.offset |= 1; | |
3121 | } | |
3122 | } | |
0945cdfd DJ |
3123 | else |
3124 | *unresolved_reloc_p = FALSE; | |
f21f3fe0 | 3125 | |
252b5132 RH |
3126 | value = sgot->output_offset + off; |
3127 | } | |
3128 | else | |
3129 | { | |
3130 | bfd_vma off; | |
f21f3fe0 | 3131 | |
252b5132 RH |
3132 | BFD_ASSERT (local_got_offsets != NULL && |
3133 | local_got_offsets[r_symndx] != (bfd_vma) -1); | |
f21f3fe0 | 3134 | |
252b5132 | 3135 | off = local_got_offsets[r_symndx]; |
f21f3fe0 | 3136 | |
252b5132 RH |
3137 | /* The offset must always be a multiple of 4. We use the |
3138 | least significant bit to record whether we have already | |
9b485d32 | 3139 | generated the necessary reloc. */ |
252b5132 RH |
3140 | if ((off & 1) != 0) |
3141 | off &= ~1; | |
3142 | else | |
3143 | { | |
b7693d02 DJ |
3144 | /* If we are addressing a Thumb function, we need to |
3145 | adjust the address by one, so that attempts to | |
3146 | call the function pointer will correctly | |
3147 | interpret it as Thumb code. */ | |
3148 | if (sym_flags == STT_ARM_TFUNC) | |
3149 | value |= 1; | |
3150 | ||
252b5132 | 3151 | bfd_put_32 (output_bfd, value, sgot->contents + off); |
f21f3fe0 | 3152 | |
252b5132 RH |
3153 | if (info->shared) |
3154 | { | |
3155 | asection * srelgot; | |
947216bf AM |
3156 | Elf_Internal_Rela outrel; |
3157 | bfd_byte *loc; | |
f21f3fe0 | 3158 | |
252b5132 RH |
3159 | srelgot = bfd_get_section_by_name (dynobj, ".rel.got"); |
3160 | BFD_ASSERT (srelgot != NULL); | |
f21f3fe0 | 3161 | |
252b5132 | 3162 | outrel.r_offset = (sgot->output_section->vma |
f21f3fe0 | 3163 | + sgot->output_offset |
252b5132 RH |
3164 | + off); |
3165 | outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); | |
947216bf AM |
3166 | loc = srelgot->contents; |
3167 | loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rel); | |
3168 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); | |
252b5132 | 3169 | } |
f21f3fe0 | 3170 | |
252b5132 RH |
3171 | local_got_offsets[r_symndx] |= 1; |
3172 | } | |
f21f3fe0 | 3173 | |
252b5132 RH |
3174 | value = sgot->output_offset + off; |
3175 | } | |
eb043451 PB |
3176 | if (r_type != R_ARM_GOT32) |
3177 | value += sgot->output_section->vma; | |
9a5aca8c | 3178 | |
f21f3fe0 | 3179 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 AJ |
3180 | contents, rel->r_offset, value, |
3181 | (bfd_vma) 0); | |
f21f3fe0 | 3182 | |
ba93b8ac DJ |
3183 | case R_ARM_TLS_LDO32: |
3184 | value = value - dtpoff_base (info); | |
3185 | ||
3186 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3187 | contents, rel->r_offset, value, (bfd_vma) 0); | |
3188 | ||
3189 | case R_ARM_TLS_LDM32: | |
3190 | { | |
3191 | bfd_vma off; | |
3192 | ||
3193 | if (globals->sgot == NULL) | |
3194 | abort (); | |
3195 | ||
3196 | off = globals->tls_ldm_got.offset; | |
3197 | ||
3198 | if ((off & 1) != 0) | |
3199 | off &= ~1; | |
3200 | else | |
3201 | { | |
3202 | /* If we don't know the module number, create a relocation | |
3203 | for it. */ | |
3204 | if (info->shared) | |
3205 | { | |
3206 | Elf_Internal_Rela outrel; | |
3207 | bfd_byte *loc; | |
3208 | ||
3209 | if (globals->srelgot == NULL) | |
3210 | abort (); | |
3211 | ||
3212 | outrel.r_offset = (globals->sgot->output_section->vma | |
3213 | + globals->sgot->output_offset + off); | |
3214 | outrel.r_info = ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32); | |
3215 | ||
3216 | bfd_put_32 (output_bfd, 0, globals->sgot->contents + off); | |
3217 | ||
3218 | loc = globals->srelgot->contents; | |
3219 | loc += globals->srelgot->reloc_count++ * sizeof (Elf32_External_Rel); | |
3220 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); | |
3221 | } | |
3222 | else | |
3223 | bfd_put_32 (output_bfd, 1, globals->sgot->contents + off); | |
3224 | ||
3225 | globals->tls_ldm_got.offset |= 1; | |
3226 | } | |
3227 | ||
3228 | value = globals->sgot->output_section->vma + globals->sgot->output_offset + off | |
3229 | - (input_section->output_section->vma + input_section->output_offset + rel->r_offset); | |
3230 | ||
3231 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3232 | contents, rel->r_offset, value, | |
3233 | (bfd_vma) 0); | |
3234 | } | |
3235 | ||
3236 | case R_ARM_TLS_GD32: | |
3237 | case R_ARM_TLS_IE32: | |
3238 | { | |
3239 | bfd_vma off; | |
3240 | int indx; | |
3241 | char tls_type; | |
3242 | ||
3243 | if (globals->sgot == NULL) | |
3244 | abort (); | |
3245 | ||
3246 | indx = 0; | |
3247 | if (h != NULL) | |
3248 | { | |
3249 | bfd_boolean dyn; | |
3250 | dyn = globals->root.dynamic_sections_created; | |
3251 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
3252 | && (!info->shared | |
3253 | || !SYMBOL_REFERENCES_LOCAL (info, h))) | |
3254 | { | |
3255 | *unresolved_reloc_p = FALSE; | |
3256 | indx = h->dynindx; | |
3257 | } | |
3258 | off = h->got.offset; | |
3259 | tls_type = ((struct elf32_arm_link_hash_entry *) h)->tls_type; | |
3260 | } | |
3261 | else | |
3262 | { | |
3263 | if (local_got_offsets == NULL) | |
3264 | abort (); | |
3265 | off = local_got_offsets[r_symndx]; | |
3266 | tls_type = elf32_arm_local_got_tls_type (input_bfd)[r_symndx]; | |
3267 | } | |
3268 | ||
3269 | if (tls_type == GOT_UNKNOWN) | |
3270 | abort (); | |
3271 | ||
3272 | if ((off & 1) != 0) | |
3273 | off &= ~1; | |
3274 | else | |
3275 | { | |
3276 | bfd_boolean need_relocs = FALSE; | |
3277 | Elf_Internal_Rela outrel; | |
3278 | bfd_byte *loc = NULL; | |
3279 | int cur_off = off; | |
3280 | ||
3281 | /* The GOT entries have not been initialized yet. Do it | |
3282 | now, and emit any relocations. If both an IE GOT and a | |
3283 | GD GOT are necessary, we emit the GD first. */ | |
3284 | ||
3285 | if ((info->shared || indx != 0) | |
3286 | && (h == NULL | |
3287 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
3288 | || h->root.type != bfd_link_hash_undefweak)) | |
3289 | { | |
3290 | need_relocs = TRUE; | |
3291 | if (globals->srelgot == NULL) | |
3292 | abort (); | |
3293 | loc = globals->srelgot->contents; | |
3294 | loc += globals->srelgot->reloc_count * sizeof (Elf32_External_Rel); | |
3295 | } | |
3296 | ||
3297 | if (tls_type & GOT_TLS_GD) | |
3298 | { | |
3299 | if (need_relocs) | |
3300 | { | |
3301 | outrel.r_offset = (globals->sgot->output_section->vma | |
3302 | + globals->sgot->output_offset + cur_off); | |
3303 | outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DTPMOD32); | |
3304 | bfd_put_32 (output_bfd, 0, globals->sgot->contents + cur_off); | |
3305 | ||
3306 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); | |
3307 | globals->srelgot->reloc_count++; | |
3308 | loc += sizeof (Elf32_External_Rel); | |
3309 | ||
3310 | if (indx == 0) | |
3311 | bfd_put_32 (output_bfd, value - dtpoff_base (info), | |
3312 | globals->sgot->contents + cur_off + 4); | |
3313 | else | |
3314 | { | |
3315 | bfd_put_32 (output_bfd, 0, | |
3316 | globals->sgot->contents + cur_off + 4); | |
3317 | ||
3318 | outrel.r_info = ELF32_R_INFO (indx, | |
3319 | R_ARM_TLS_DTPOFF32); | |
3320 | outrel.r_offset += 4; | |
3321 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); | |
3322 | globals->srelgot->reloc_count++; | |
3323 | loc += sizeof (Elf32_External_Rel); | |
3324 | } | |
3325 | } | |
3326 | else | |
3327 | { | |
3328 | /* If we are not emitting relocations for a | |
3329 | general dynamic reference, then we must be in a | |
3330 | static link or an executable link with the | |
3331 | symbol binding locally. Mark it as belonging | |
3332 | to module 1, the executable. */ | |
3333 | bfd_put_32 (output_bfd, 1, | |
3334 | globals->sgot->contents + cur_off); | |
3335 | bfd_put_32 (output_bfd, value - dtpoff_base (info), | |
3336 | globals->sgot->contents + cur_off + 4); | |
3337 | } | |
3338 | ||
3339 | cur_off += 8; | |
3340 | } | |
3341 | ||
3342 | if (tls_type & GOT_TLS_IE) | |
3343 | { | |
3344 | if (need_relocs) | |
3345 | { | |
3346 | outrel.r_offset = (globals->sgot->output_section->vma | |
3347 | + globals->sgot->output_offset | |
3348 | + cur_off); | |
3349 | outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_TPOFF32); | |
3350 | ||
3351 | if (indx == 0) | |
3352 | bfd_put_32 (output_bfd, value - dtpoff_base (info), | |
3353 | globals->sgot->contents + cur_off); | |
3354 | else | |
3355 | bfd_put_32 (output_bfd, 0, | |
3356 | globals->sgot->contents + cur_off); | |
3357 | ||
3358 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); | |
3359 | globals->srelgot->reloc_count++; | |
3360 | loc += sizeof (Elf32_External_Rel); | |
3361 | } | |
3362 | else | |
3363 | bfd_put_32 (output_bfd, tpoff (info, value), | |
3364 | globals->sgot->contents + cur_off); | |
3365 | cur_off += 4; | |
3366 | } | |
3367 | ||
3368 | if (h != NULL) | |
3369 | h->got.offset |= 1; | |
3370 | else | |
3371 | local_got_offsets[r_symndx] |= 1; | |
3372 | } | |
3373 | ||
3374 | if ((tls_type & GOT_TLS_GD) && r_type != R_ARM_TLS_GD32) | |
3375 | off += 8; | |
3376 | value = globals->sgot->output_section->vma + globals->sgot->output_offset + off | |
3377 | - (input_section->output_section->vma + input_section->output_offset + rel->r_offset); | |
3378 | ||
3379 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3380 | contents, rel->r_offset, value, | |
3381 | (bfd_vma) 0); | |
3382 | } | |
3383 | ||
3384 | case R_ARM_TLS_LE32: | |
3385 | if (info->shared) | |
3386 | { | |
3387 | (*_bfd_error_handler) | |
3388 | (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"), | |
3389 | input_bfd, input_section, | |
3390 | (long) rel->r_offset, howto->name); | |
3391 | return FALSE; | |
3392 | } | |
3393 | else | |
3394 | value = tpoff (info, value); | |
3395 | ||
3396 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3397 | contents, rel->r_offset, value, (bfd_vma) 0); | |
3398 | ||
252b5132 RH |
3399 | case R_ARM_SBREL32: |
3400 | return bfd_reloc_notsupported; | |
3401 | ||
3402 | case R_ARM_AMP_VCALL9: | |
3403 | return bfd_reloc_notsupported; | |
3404 | ||
3405 | case R_ARM_RSBREL32: | |
3406 | return bfd_reloc_notsupported; | |
3407 | ||
3408 | case R_ARM_THM_RPC22: | |
3409 | return bfd_reloc_notsupported; | |
3410 | ||
3411 | case R_ARM_RREL32: | |
3412 | return bfd_reloc_notsupported; | |
3413 | ||
3414 | case R_ARM_RABS32: | |
3415 | return bfd_reloc_notsupported; | |
3416 | ||
3417 | case R_ARM_RPC24: | |
3418 | return bfd_reloc_notsupported; | |
3419 | ||
3420 | case R_ARM_RBASE: | |
3421 | return bfd_reloc_notsupported; | |
3422 | ||
319850b4 JB |
3423 | case R_ARM_V4BX: |
3424 | if (globals->fix_v4bx) | |
3425 | { | |
3426 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
3427 | ||
3428 | /* Ensure that we have a BX instruction. */ | |
3429 | BFD_ASSERT ((insn & 0x0ffffff0) == 0x012fff10); | |
3430 | ||
3431 | /* Preserve Rm (lowest four bits) and the condition code | |
3432 | (highest four bits). Other bits encode MOV PC,Rm. */ | |
3433 | insn = (insn & 0xf000000f) | 0x01a0f000; | |
3434 | ||
3435 | bfd_put_32 (input_bfd, insn, hit_data); | |
3436 | } | |
3437 | return bfd_reloc_ok; | |
3438 | ||
252b5132 RH |
3439 | default: |
3440 | return bfd_reloc_notsupported; | |
3441 | } | |
3442 | } | |
3443 | ||
98c1d4aa NC |
3444 | /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */ |
3445 | static void | |
57e8b36a NC |
3446 | arm_add_to_rel (bfd * abfd, |
3447 | bfd_byte * address, | |
3448 | reloc_howto_type * howto, | |
3449 | bfd_signed_vma increment) | |
98c1d4aa | 3450 | { |
98c1d4aa NC |
3451 | bfd_signed_vma addend; |
3452 | ||
9a5aca8c | 3453 | if (howto->type == R_ARM_THM_PC22) |
98c1d4aa | 3454 | { |
9a5aca8c AM |
3455 | int upper_insn, lower_insn; |
3456 | int upper, lower; | |
98c1d4aa | 3457 | |
9a5aca8c AM |
3458 | upper_insn = bfd_get_16 (abfd, address); |
3459 | lower_insn = bfd_get_16 (abfd, address + 2); | |
3460 | upper = upper_insn & 0x7ff; | |
3461 | lower = lower_insn & 0x7ff; | |
3462 | ||
3463 | addend = (upper << 12) | (lower << 1); | |
ddda4409 | 3464 | addend += increment; |
9a5aca8c | 3465 | addend >>= 1; |
98c1d4aa | 3466 | |
9a5aca8c AM |
3467 | upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff); |
3468 | lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff); | |
3469 | ||
dc810e39 AM |
3470 | bfd_put_16 (abfd, (bfd_vma) upper_insn, address); |
3471 | bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2); | |
9a5aca8c AM |
3472 | } |
3473 | else | |
3474 | { | |
3475 | bfd_vma contents; | |
3476 | ||
3477 | contents = bfd_get_32 (abfd, address); | |
3478 | ||
3479 | /* Get the (signed) value from the instruction. */ | |
3480 | addend = contents & howto->src_mask; | |
3481 | if (addend & ((howto->src_mask + 1) >> 1)) | |
3482 | { | |
3483 | bfd_signed_vma mask; | |
3484 | ||
3485 | mask = -1; | |
3486 | mask &= ~ howto->src_mask; | |
3487 | addend |= mask; | |
3488 | } | |
3489 | ||
3490 | /* Add in the increment, (which is a byte value). */ | |
3491 | switch (howto->type) | |
3492 | { | |
3493 | default: | |
3494 | addend += increment; | |
3495 | break; | |
3496 | ||
3497 | case R_ARM_PC24: | |
5b5bb741 PB |
3498 | #ifndef OLD_ARM_ABI |
3499 | case R_ARM_CALL: | |
3500 | case R_ARM_JUMP24: | |
3501 | #endif | |
9a5aca8c | 3502 | addend <<= howto->size; |
dc810e39 | 3503 | addend += increment; |
9a5aca8c AM |
3504 | |
3505 | /* Should we check for overflow here ? */ | |
3506 | ||
3507 | /* Drop any undesired bits. */ | |
3508 | addend >>= howto->rightshift; | |
3509 | break; | |
3510 | } | |
3511 | ||
3512 | contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask); | |
3513 | ||
3514 | bfd_put_32 (abfd, contents, address); | |
ddda4409 | 3515 | } |
98c1d4aa | 3516 | } |
252b5132 | 3517 | |
ba93b8ac DJ |
3518 | #define IS_ARM_TLS_RELOC(R_TYPE) \ |
3519 | ((R_TYPE) == R_ARM_TLS_GD32 \ | |
3520 | || (R_TYPE) == R_ARM_TLS_LDO32 \ | |
3521 | || (R_TYPE) == R_ARM_TLS_LDM32 \ | |
3522 | || (R_TYPE) == R_ARM_TLS_DTPOFF32 \ | |
3523 | || (R_TYPE) == R_ARM_TLS_DTPMOD32 \ | |
3524 | || (R_TYPE) == R_ARM_TLS_TPOFF32 \ | |
3525 | || (R_TYPE) == R_ARM_TLS_LE32 \ | |
3526 | || (R_TYPE) == R_ARM_TLS_IE32) | |
3527 | ||
252b5132 | 3528 | /* Relocate an ARM ELF section. */ |
b34976b6 | 3529 | static bfd_boolean |
57e8b36a NC |
3530 | elf32_arm_relocate_section (bfd * output_bfd, |
3531 | struct bfd_link_info * info, | |
3532 | bfd * input_bfd, | |
3533 | asection * input_section, | |
3534 | bfd_byte * contents, | |
3535 | Elf_Internal_Rela * relocs, | |
3536 | Elf_Internal_Sym * local_syms, | |
3537 | asection ** local_sections) | |
252b5132 | 3538 | { |
b34976b6 AM |
3539 | Elf_Internal_Shdr *symtab_hdr; |
3540 | struct elf_link_hash_entry **sym_hashes; | |
3541 | Elf_Internal_Rela *rel; | |
3542 | Elf_Internal_Rela *relend; | |
3543 | const char *name; | |
b32d3aa2 | 3544 | struct elf32_arm_link_hash_table * globals; |
252b5132 | 3545 | |
4e7fd91e PB |
3546 | globals = elf32_arm_hash_table (info); |
3547 | if (info->relocatable && !globals->use_rel) | |
b34976b6 | 3548 | return TRUE; |
b491616a | 3549 | |
252b5132 RH |
3550 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; |
3551 | sym_hashes = elf_sym_hashes (input_bfd); | |
3552 | ||
3553 | rel = relocs; | |
3554 | relend = relocs + input_section->reloc_count; | |
3555 | for (; rel < relend; rel++) | |
3556 | { | |
ba96a88f NC |
3557 | int r_type; |
3558 | reloc_howto_type * howto; | |
3559 | unsigned long r_symndx; | |
3560 | Elf_Internal_Sym * sym; | |
3561 | asection * sec; | |
252b5132 | 3562 | struct elf_link_hash_entry * h; |
ba96a88f NC |
3563 | bfd_vma relocation; |
3564 | bfd_reloc_status_type r; | |
3565 | arelent bfd_reloc; | |
ba93b8ac | 3566 | char sym_type; |
0945cdfd | 3567 | bfd_boolean unresolved_reloc = FALSE; |
f21f3fe0 | 3568 | |
252b5132 | 3569 | r_symndx = ELF32_R_SYM (rel->r_info); |
ba96a88f | 3570 | r_type = ELF32_R_TYPE (rel->r_info); |
b32d3aa2 | 3571 | r_type = arm_real_reloc_type (globals, r_type); |
252b5132 | 3572 | |
ba96a88f NC |
3573 | if ( r_type == R_ARM_GNU_VTENTRY |
3574 | || r_type == R_ARM_GNU_VTINHERIT) | |
252b5132 RH |
3575 | continue; |
3576 | ||
b32d3aa2 | 3577 | bfd_reloc.howto = elf32_arm_howto_from_type (r_type); |
ba96a88f | 3578 | howto = bfd_reloc.howto; |
252b5132 | 3579 | |
4e7fd91e | 3580 | if (info->relocatable && globals->use_rel) |
252b5132 | 3581 | { |
1049f94e | 3582 | /* This is a relocatable link. We don't have to change |
252b5132 RH |
3583 | anything, unless the reloc is against a section symbol, |
3584 | in which case we have to adjust according to where the | |
3585 | section symbol winds up in the output section. */ | |
3586 | if (r_symndx < symtab_hdr->sh_info) | |
3587 | { | |
3588 | sym = local_syms + r_symndx; | |
3589 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
3590 | { | |
3591 | sec = local_sections[r_symndx]; | |
98c1d4aa | 3592 | arm_add_to_rel (input_bfd, contents + rel->r_offset, |
dc810e39 AM |
3593 | howto, |
3594 | (bfd_signed_vma) (sec->output_offset | |
3595 | + sym->st_value)); | |
252b5132 RH |
3596 | } |
3597 | } | |
3598 | ||
3599 | continue; | |
3600 | } | |
3601 | ||
3602 | /* This is a final link. */ | |
3603 | h = NULL; | |
3604 | sym = NULL; | |
3605 | sec = NULL; | |
9b485d32 | 3606 | |
252b5132 RH |
3607 | if (r_symndx < symtab_hdr->sh_info) |
3608 | { | |
3609 | sym = local_syms + r_symndx; | |
ba93b8ac | 3610 | sym_type = ELF32_ST_TYPE (sym->st_info); |
252b5132 | 3611 | sec = local_sections[r_symndx]; |
4e7fd91e | 3612 | if (globals->use_rel) |
f8df10f4 | 3613 | { |
4e7fd91e PB |
3614 | relocation = (sec->output_section->vma |
3615 | + sec->output_offset | |
3616 | + sym->st_value); | |
3617 | if ((sec->flags & SEC_MERGE) | |
3618 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
f8df10f4 | 3619 | { |
4e7fd91e PB |
3620 | asection *msec; |
3621 | bfd_vma addend, value; | |
3622 | ||
3623 | if (howto->rightshift) | |
3624 | { | |
3625 | (*_bfd_error_handler) | |
3626 | (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"), | |
3627 | input_bfd, input_section, | |
3628 | (long) rel->r_offset, howto->name); | |
3629 | return FALSE; | |
3630 | } | |
f8df10f4 | 3631 | |
4e7fd91e | 3632 | value = bfd_get_32 (input_bfd, contents + rel->r_offset); |
f8df10f4 | 3633 | |
4e7fd91e PB |
3634 | /* Get the (signed) value from the instruction. */ |
3635 | addend = value & howto->src_mask; | |
3636 | if (addend & ((howto->src_mask + 1) >> 1)) | |
3637 | { | |
3638 | bfd_signed_vma mask; | |
f8df10f4 | 3639 | |
4e7fd91e PB |
3640 | mask = -1; |
3641 | mask &= ~ howto->src_mask; | |
3642 | addend |= mask; | |
3643 | } | |
3644 | msec = sec; | |
3645 | addend = | |
3646 | _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend) | |
3647 | - relocation; | |
3648 | addend += msec->output_section->vma + msec->output_offset; | |
3649 | value = (value & ~ howto->dst_mask) | (addend & howto->dst_mask); | |
3650 | bfd_put_32 (input_bfd, value, contents + rel->r_offset); | |
f8df10f4 | 3651 | } |
f8df10f4 | 3652 | } |
4e7fd91e PB |
3653 | else |
3654 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
252b5132 RH |
3655 | } |
3656 | else | |
3657 | { | |
560e09e9 | 3658 | bfd_boolean warned; |
560e09e9 | 3659 | |
b2a8e766 AM |
3660 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
3661 | r_symndx, symtab_hdr, sym_hashes, | |
3662 | h, sec, relocation, | |
3663 | unresolved_reloc, warned); | |
ba93b8ac DJ |
3664 | |
3665 | sym_type = h->type; | |
252b5132 RH |
3666 | } |
3667 | ||
3668 | if (h != NULL) | |
3669 | name = h->root.root.string; | |
3670 | else | |
3671 | { | |
3672 | name = (bfd_elf_string_from_elf_section | |
3673 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
3674 | if (name == NULL || *name == '\0') | |
3675 | name = bfd_section_name (input_bfd, sec); | |
3676 | } | |
f21f3fe0 | 3677 | |
ba93b8ac DJ |
3678 | if (r_symndx != 0 |
3679 | && r_type != R_ARM_NONE | |
3680 | && (h == NULL | |
3681 | || h->root.type == bfd_link_hash_defined | |
3682 | || h->root.type == bfd_link_hash_defweak) | |
3683 | && IS_ARM_TLS_RELOC (r_type) != (sym_type == STT_TLS)) | |
3684 | { | |
3685 | (*_bfd_error_handler) | |
3686 | ((sym_type == STT_TLS | |
3687 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") | |
3688 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")), | |
3689 | input_bfd, | |
3690 | input_section, | |
3691 | (long) rel->r_offset, | |
3692 | howto->name, | |
3693 | name); | |
3694 | } | |
3695 | ||
252b5132 RH |
3696 | r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd, |
3697 | input_section, contents, rel, | |
3698 | relocation, info, sec, name, | |
3699 | (h ? ELF_ST_TYPE (h->type) : | |
0945cdfd DJ |
3700 | ELF_ST_TYPE (sym->st_info)), h, |
3701 | &unresolved_reloc); | |
3702 | ||
3703 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections | |
3704 | because such sections are not SEC_ALLOC and thus ld.so will | |
3705 | not process them. */ | |
3706 | if (unresolved_reloc | |
3707 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
3708 | && h->def_dynamic)) | |
3709 | { | |
3710 | (*_bfd_error_handler) | |
3711 | (_("%B(%A+0x%lx): warning: unresolvable relocation %d against symbol `%s'"), | |
3712 | input_bfd, input_section, (long) rel->r_offset, | |
3713 | r_type, h->root.root.string); | |
3714 | return FALSE; | |
3715 | } | |
252b5132 RH |
3716 | |
3717 | if (r != bfd_reloc_ok) | |
3718 | { | |
3719 | const char * msg = (const char *) 0; | |
3720 | ||
3721 | switch (r) | |
3722 | { | |
3723 | case bfd_reloc_overflow: | |
cf919dfd PB |
3724 | /* If the overflowing reloc was to an undefined symbol, |
3725 | we have already printed one error message and there | |
3726 | is no point complaining again. */ | |
3727 | if ((! h || | |
3728 | h->root.type != bfd_link_hash_undefined) | |
3729 | && (!((*info->callbacks->reloc_overflow) | |
dfeffb9f L |
3730 | (info, (h ? &h->root : NULL), name, howto->name, |
3731 | (bfd_vma) 0, input_bfd, input_section, | |
3732 | rel->r_offset)))) | |
b34976b6 | 3733 | return FALSE; |
252b5132 RH |
3734 | break; |
3735 | ||
3736 | case bfd_reloc_undefined: | |
3737 | if (!((*info->callbacks->undefined_symbol) | |
3738 | (info, name, input_bfd, input_section, | |
b34976b6 AM |
3739 | rel->r_offset, TRUE))) |
3740 | return FALSE; | |
252b5132 RH |
3741 | break; |
3742 | ||
3743 | case bfd_reloc_outofrange: | |
9b485d32 | 3744 | msg = _("internal error: out of range error"); |
252b5132 RH |
3745 | goto common_error; |
3746 | ||
3747 | case bfd_reloc_notsupported: | |
9b485d32 | 3748 | msg = _("internal error: unsupported relocation error"); |
252b5132 RH |
3749 | goto common_error; |
3750 | ||
3751 | case bfd_reloc_dangerous: | |
9b485d32 | 3752 | msg = _("internal error: dangerous error"); |
252b5132 RH |
3753 | goto common_error; |
3754 | ||
3755 | default: | |
9b485d32 | 3756 | msg = _("internal error: unknown error"); |
252b5132 RH |
3757 | /* fall through */ |
3758 | ||
3759 | common_error: | |
3760 | if (!((*info->callbacks->warning) | |
3761 | (info, msg, name, input_bfd, input_section, | |
3762 | rel->r_offset))) | |
b34976b6 | 3763 | return FALSE; |
252b5132 RH |
3764 | break; |
3765 | } | |
3766 | } | |
3767 | } | |
3768 | ||
b34976b6 | 3769 | return TRUE; |
252b5132 RH |
3770 | } |
3771 | ||
c178919b NC |
3772 | /* Set the right machine number. */ |
3773 | ||
3774 | static bfd_boolean | |
57e8b36a | 3775 | elf32_arm_object_p (bfd *abfd) |
c178919b | 3776 | { |
5a6c6817 | 3777 | unsigned int mach; |
57e8b36a | 3778 | |
5a6c6817 | 3779 | mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION); |
c178919b | 3780 | |
5a6c6817 NC |
3781 | if (mach != bfd_mach_arm_unknown) |
3782 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach); | |
3783 | ||
3784 | else if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT) | |
3785 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_ep9312); | |
e16bb312 | 3786 | |
e16bb312 | 3787 | else |
5a6c6817 | 3788 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach); |
c178919b NC |
3789 | |
3790 | return TRUE; | |
3791 | } | |
3792 | ||
fc830a83 | 3793 | /* Function to keep ARM specific flags in the ELF header. */ |
3c9458e9 | 3794 | |
b34976b6 | 3795 | static bfd_boolean |
57e8b36a | 3796 | elf32_arm_set_private_flags (bfd *abfd, flagword flags) |
252b5132 RH |
3797 | { |
3798 | if (elf_flags_init (abfd) | |
3799 | && elf_elfheader (abfd)->e_flags != flags) | |
3800 | { | |
fc830a83 NC |
3801 | if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN) |
3802 | { | |
fd2ec330 | 3803 | if (flags & EF_ARM_INTERWORK) |
d003868e AM |
3804 | (*_bfd_error_handler) |
3805 | (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"), | |
3806 | abfd); | |
fc830a83 | 3807 | else |
d003868e AM |
3808 | _bfd_error_handler |
3809 | (_("Warning: Clearing the interworking flag of %B due to outside request"), | |
3810 | abfd); | |
fc830a83 | 3811 | } |
252b5132 RH |
3812 | } |
3813 | else | |
3814 | { | |
3815 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 | 3816 | elf_flags_init (abfd) = TRUE; |
252b5132 RH |
3817 | } |
3818 | ||
b34976b6 | 3819 | return TRUE; |
252b5132 RH |
3820 | } |
3821 | ||
fc830a83 | 3822 | /* Copy backend specific data from one object module to another. */ |
9b485d32 | 3823 | |
b34976b6 | 3824 | static bfd_boolean |
57e8b36a | 3825 | elf32_arm_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
252b5132 RH |
3826 | { |
3827 | flagword in_flags; | |
3828 | flagword out_flags; | |
3829 | ||
fc830a83 | 3830 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
252b5132 | 3831 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
b34976b6 | 3832 | return TRUE; |
252b5132 | 3833 | |
fc830a83 | 3834 | in_flags = elf_elfheader (ibfd)->e_flags; |
252b5132 RH |
3835 | out_flags = elf_elfheader (obfd)->e_flags; |
3836 | ||
fc830a83 NC |
3837 | if (elf_flags_init (obfd) |
3838 | && EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN | |
3839 | && in_flags != out_flags) | |
252b5132 | 3840 | { |
252b5132 | 3841 | /* Cannot mix APCS26 and APCS32 code. */ |
fd2ec330 | 3842 | if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26)) |
b34976b6 | 3843 | return FALSE; |
252b5132 RH |
3844 | |
3845 | /* Cannot mix float APCS and non-float APCS code. */ | |
fd2ec330 | 3846 | if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT)) |
b34976b6 | 3847 | return FALSE; |
252b5132 RH |
3848 | |
3849 | /* If the src and dest have different interworking flags | |
3850 | then turn off the interworking bit. */ | |
fd2ec330 | 3851 | if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK)) |
252b5132 | 3852 | { |
fd2ec330 | 3853 | if (out_flags & EF_ARM_INTERWORK) |
d003868e AM |
3854 | _bfd_error_handler |
3855 | (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"), | |
3856 | obfd, ibfd); | |
252b5132 | 3857 | |
fd2ec330 | 3858 | in_flags &= ~EF_ARM_INTERWORK; |
252b5132 | 3859 | } |
1006ba19 PB |
3860 | |
3861 | /* Likewise for PIC, though don't warn for this case. */ | |
fd2ec330 PB |
3862 | if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC)) |
3863 | in_flags &= ~EF_ARM_PIC; | |
252b5132 RH |
3864 | } |
3865 | ||
3866 | elf_elfheader (obfd)->e_flags = in_flags; | |
b34976b6 | 3867 | elf_flags_init (obfd) = TRUE; |
252b5132 | 3868 | |
94a3258f PB |
3869 | /* Also copy the EI_OSABI field. */ |
3870 | elf_elfheader (obfd)->e_ident[EI_OSABI] = | |
3871 | elf_elfheader (ibfd)->e_ident[EI_OSABI]; | |
3872 | ||
b34976b6 | 3873 | return TRUE; |
252b5132 RH |
3874 | } |
3875 | ||
3876 | /* Merge backend specific data from an object file to the output | |
3877 | object file when linking. */ | |
9b485d32 | 3878 | |
b34976b6 | 3879 | static bfd_boolean |
57e8b36a | 3880 | elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd) |
252b5132 RH |
3881 | { |
3882 | flagword out_flags; | |
3883 | flagword in_flags; | |
b34976b6 | 3884 | bfd_boolean flags_compatible = TRUE; |
cf919dfd | 3885 | asection *sec; |
252b5132 | 3886 | |
9b485d32 | 3887 | /* Check if we have the same endianess. */ |
82e51918 | 3888 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) |
b34976b6 | 3889 | return FALSE; |
1fe494a5 | 3890 | |
252b5132 RH |
3891 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
3892 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 3893 | return TRUE; |
252b5132 | 3894 | |
252b5132 RH |
3895 | /* The input BFD must have had its flags initialised. */ |
3896 | /* The following seems bogus to me -- The flags are initialized in | |
3897 | the assembler but I don't think an elf_flags_init field is | |
9b485d32 | 3898 | written into the object. */ |
252b5132 RH |
3899 | /* BFD_ASSERT (elf_flags_init (ibfd)); */ |
3900 | ||
3901 | in_flags = elf_elfheader (ibfd)->e_flags; | |
3902 | out_flags = elf_elfheader (obfd)->e_flags; | |
3903 | ||
3904 | if (!elf_flags_init (obfd)) | |
3905 | { | |
fe077fa6 NC |
3906 | /* If the input is the default architecture and had the default |
3907 | flags then do not bother setting the flags for the output | |
3908 | architecture, instead allow future merges to do this. If no | |
3909 | future merges ever set these flags then they will retain their | |
3910 | uninitialised values, which surprise surprise, correspond | |
252b5132 | 3911 | to the default values. */ |
fe077fa6 NC |
3912 | if (bfd_get_arch_info (ibfd)->the_default |
3913 | && elf_elfheader (ibfd)->e_flags == 0) | |
b34976b6 | 3914 | return TRUE; |
252b5132 | 3915 | |
b34976b6 | 3916 | elf_flags_init (obfd) = TRUE; |
252b5132 RH |
3917 | elf_elfheader (obfd)->e_flags = in_flags; |
3918 | ||
3919 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
3920 | && bfd_get_arch_info (obfd)->the_default) | |
3921 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); | |
3922 | ||
b34976b6 | 3923 | return TRUE; |
252b5132 RH |
3924 | } |
3925 | ||
5a6c6817 NC |
3926 | /* Determine what should happen if the input ARM architecture |
3927 | does not match the output ARM architecture. */ | |
3928 | if (! bfd_arm_merge_machines (ibfd, obfd)) | |
3929 | return FALSE; | |
e16bb312 | 3930 | |
1006ba19 | 3931 | /* Identical flags must be compatible. */ |
252b5132 | 3932 | if (in_flags == out_flags) |
b34976b6 | 3933 | return TRUE; |
252b5132 | 3934 | |
35a0f415 DJ |
3935 | /* Check to see if the input BFD actually contains any sections. If |
3936 | not, its flags may not have been initialised either, but it | |
3937 | cannot actually cause any incompatibility. Do not short-circuit | |
3938 | dynamic objects; their section list may be emptied by | |
d1f161ea | 3939 | elf_link_add_object_symbols. |
35a0f415 | 3940 | |
d1f161ea NC |
3941 | Also check to see if there are no code sections in the input. |
3942 | In this case there is no need to check for code specific flags. | |
3943 | XXX - do we need to worry about floating-point format compatability | |
3944 | in data sections ? */ | |
35a0f415 | 3945 | if (!(ibfd->flags & DYNAMIC)) |
cf919dfd | 3946 | { |
35a0f415 | 3947 | bfd_boolean null_input_bfd = TRUE; |
d1f161ea | 3948 | bfd_boolean only_data_sections = TRUE; |
35a0f415 DJ |
3949 | |
3950 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
cf919dfd | 3951 | { |
35a0f415 DJ |
3952 | /* Ignore synthetic glue sections. */ |
3953 | if (strcmp (sec->name, ".glue_7") | |
3954 | && strcmp (sec->name, ".glue_7t")) | |
3955 | { | |
d1f161ea NC |
3956 | if ((bfd_get_section_flags (ibfd, sec) |
3957 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
3958 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
3959 | only_data_sections = FALSE; | |
3960 | ||
35a0f415 DJ |
3961 | null_input_bfd = FALSE; |
3962 | break; | |
3963 | } | |
cf919dfd | 3964 | } |
d1f161ea NC |
3965 | |
3966 | if (null_input_bfd || only_data_sections) | |
35a0f415 | 3967 | return TRUE; |
cf919dfd | 3968 | } |
cf919dfd | 3969 | |
252b5132 | 3970 | /* Complain about various flag mismatches. */ |
fc830a83 NC |
3971 | if (EF_ARM_EABI_VERSION (in_flags) != EF_ARM_EABI_VERSION (out_flags)) |
3972 | { | |
d003868e | 3973 | _bfd_error_handler |
3656d5e3 | 3974 | (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"), |
d003868e AM |
3975 | ibfd, obfd, |
3976 | (in_flags & EF_ARM_EABIMASK) >> 24, | |
3977 | (out_flags & EF_ARM_EABIMASK) >> 24); | |
b34976b6 | 3978 | return FALSE; |
fc830a83 | 3979 | } |
252b5132 | 3980 | |
1006ba19 PB |
3981 | /* Not sure what needs to be checked for EABI versions >= 1. */ |
3982 | if (EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN) | |
3983 | { | |
fd2ec330 | 3984 | if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26)) |
1006ba19 | 3985 | { |
d003868e AM |
3986 | _bfd_error_handler |
3987 | (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"), | |
3988 | ibfd, obfd, | |
3989 | in_flags & EF_ARM_APCS_26 ? 26 : 32, | |
3990 | out_flags & EF_ARM_APCS_26 ? 26 : 32); | |
b34976b6 | 3991 | flags_compatible = FALSE; |
1006ba19 | 3992 | } |
252b5132 | 3993 | |
fd2ec330 | 3994 | if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT)) |
1006ba19 | 3995 | { |
5eefb65f | 3996 | if (in_flags & EF_ARM_APCS_FLOAT) |
d003868e AM |
3997 | _bfd_error_handler |
3998 | (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"), | |
3999 | ibfd, obfd); | |
5eefb65f | 4000 | else |
d003868e AM |
4001 | _bfd_error_handler |
4002 | (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"), | |
4003 | ibfd, obfd); | |
63b0f745 | 4004 | |
b34976b6 | 4005 | flags_compatible = FALSE; |
1006ba19 | 4006 | } |
252b5132 | 4007 | |
96a846ea | 4008 | if ((in_flags & EF_ARM_VFP_FLOAT) != (out_flags & EF_ARM_VFP_FLOAT)) |
1006ba19 | 4009 | { |
96a846ea | 4010 | if (in_flags & EF_ARM_VFP_FLOAT) |
d003868e AM |
4011 | _bfd_error_handler |
4012 | (_("ERROR: %B uses VFP instructions, whereas %B does not"), | |
4013 | ibfd, obfd); | |
5eefb65f | 4014 | else |
d003868e AM |
4015 | _bfd_error_handler |
4016 | (_("ERROR: %B uses FPA instructions, whereas %B does not"), | |
4017 | ibfd, obfd); | |
fde78edd NC |
4018 | |
4019 | flags_compatible = FALSE; | |
4020 | } | |
4021 | ||
4022 | if ((in_flags & EF_ARM_MAVERICK_FLOAT) != (out_flags & EF_ARM_MAVERICK_FLOAT)) | |
4023 | { | |
4024 | if (in_flags & EF_ARM_MAVERICK_FLOAT) | |
d003868e AM |
4025 | _bfd_error_handler |
4026 | (_("ERROR: %B uses Maverick instructions, whereas %B does not"), | |
4027 | ibfd, obfd); | |
fde78edd | 4028 | else |
d003868e AM |
4029 | _bfd_error_handler |
4030 | (_("ERROR: %B does not use Maverick instructions, whereas %B does"), | |
4031 | ibfd, obfd); | |
63b0f745 | 4032 | |
b34976b6 | 4033 | flags_compatible = FALSE; |
1006ba19 | 4034 | } |
96a846ea RE |
4035 | |
4036 | #ifdef EF_ARM_SOFT_FLOAT | |
4037 | if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT)) | |
4038 | { | |
4039 | /* We can allow interworking between code that is VFP format | |
4040 | layout, and uses either soft float or integer regs for | |
4041 | passing floating point arguments and results. We already | |
4042 | know that the APCS_FLOAT flags match; similarly for VFP | |
4043 | flags. */ | |
4044 | if ((in_flags & EF_ARM_APCS_FLOAT) != 0 | |
4045 | || (in_flags & EF_ARM_VFP_FLOAT) == 0) | |
4046 | { | |
4047 | if (in_flags & EF_ARM_SOFT_FLOAT) | |
d003868e AM |
4048 | _bfd_error_handler |
4049 | (_("ERROR: %B uses software FP, whereas %B uses hardware FP"), | |
4050 | ibfd, obfd); | |
96a846ea | 4051 | else |
d003868e AM |
4052 | _bfd_error_handler |
4053 | (_("ERROR: %B uses hardware FP, whereas %B uses software FP"), | |
4054 | ibfd, obfd); | |
96a846ea | 4055 | |
b34976b6 | 4056 | flags_compatible = FALSE; |
96a846ea RE |
4057 | } |
4058 | } | |
ee43f35e | 4059 | #endif |
252b5132 | 4060 | |
1006ba19 | 4061 | /* Interworking mismatch is only a warning. */ |
fd2ec330 | 4062 | if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK)) |
8f615d07 | 4063 | { |
e3c8793a NC |
4064 | if (in_flags & EF_ARM_INTERWORK) |
4065 | { | |
d003868e AM |
4066 | _bfd_error_handler |
4067 | (_("Warning: %B supports interworking, whereas %B does not"), | |
4068 | ibfd, obfd); | |
e3c8793a NC |
4069 | } |
4070 | else | |
4071 | { | |
d003868e AM |
4072 | _bfd_error_handler |
4073 | (_("Warning: %B does not support interworking, whereas %B does"), | |
4074 | ibfd, obfd); | |
e3c8793a | 4075 | } |
8f615d07 | 4076 | } |
252b5132 | 4077 | } |
63b0f745 | 4078 | |
1006ba19 | 4079 | return flags_compatible; |
252b5132 RH |
4080 | } |
4081 | ||
9b485d32 NC |
4082 | /* Display the flags field. */ |
4083 | ||
b34976b6 | 4084 | static bfd_boolean |
57e8b36a | 4085 | elf32_arm_print_private_bfd_data (bfd *abfd, void * ptr) |
252b5132 | 4086 | { |
fc830a83 NC |
4087 | FILE * file = (FILE *) ptr; |
4088 | unsigned long flags; | |
252b5132 RH |
4089 | |
4090 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
4091 | ||
4092 | /* Print normal ELF private data. */ | |
4093 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
4094 | ||
fc830a83 | 4095 | flags = elf_elfheader (abfd)->e_flags; |
9b485d32 NC |
4096 | /* Ignore init flag - it may not be set, despite the flags field |
4097 | containing valid data. */ | |
252b5132 RH |
4098 | |
4099 | /* xgettext:c-format */ | |
9b485d32 | 4100 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); |
252b5132 | 4101 | |
fc830a83 NC |
4102 | switch (EF_ARM_EABI_VERSION (flags)) |
4103 | { | |
4104 | case EF_ARM_EABI_UNKNOWN: | |
4cc11e76 | 4105 | /* The following flag bits are GNU extensions and not part of the |
fc830a83 NC |
4106 | official ARM ELF extended ABI. Hence they are only decoded if |
4107 | the EABI version is not set. */ | |
fd2ec330 | 4108 | if (flags & EF_ARM_INTERWORK) |
9b485d32 | 4109 | fprintf (file, _(" [interworking enabled]")); |
9a5aca8c | 4110 | |
fd2ec330 | 4111 | if (flags & EF_ARM_APCS_26) |
6c571f00 | 4112 | fprintf (file, " [APCS-26]"); |
fc830a83 | 4113 | else |
6c571f00 | 4114 | fprintf (file, " [APCS-32]"); |
9a5aca8c | 4115 | |
96a846ea RE |
4116 | if (flags & EF_ARM_VFP_FLOAT) |
4117 | fprintf (file, _(" [VFP float format]")); | |
fde78edd NC |
4118 | else if (flags & EF_ARM_MAVERICK_FLOAT) |
4119 | fprintf (file, _(" [Maverick float format]")); | |
96a846ea RE |
4120 | else |
4121 | fprintf (file, _(" [FPA float format]")); | |
4122 | ||
fd2ec330 | 4123 | if (flags & EF_ARM_APCS_FLOAT) |
9b485d32 | 4124 | fprintf (file, _(" [floats passed in float registers]")); |
9a5aca8c | 4125 | |
fd2ec330 | 4126 | if (flags & EF_ARM_PIC) |
9b485d32 | 4127 | fprintf (file, _(" [position independent]")); |
fc830a83 | 4128 | |
fd2ec330 | 4129 | if (flags & EF_ARM_NEW_ABI) |
9b485d32 | 4130 | fprintf (file, _(" [new ABI]")); |
9a5aca8c | 4131 | |
fd2ec330 | 4132 | if (flags & EF_ARM_OLD_ABI) |
9b485d32 | 4133 | fprintf (file, _(" [old ABI]")); |
9a5aca8c | 4134 | |
fd2ec330 | 4135 | if (flags & EF_ARM_SOFT_FLOAT) |
9b485d32 | 4136 | fprintf (file, _(" [software FP]")); |
9a5aca8c | 4137 | |
96a846ea RE |
4138 | flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT |
4139 | | EF_ARM_PIC | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI | |
fde78edd NC |
4140 | | EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT |
4141 | | EF_ARM_MAVERICK_FLOAT); | |
fc830a83 | 4142 | break; |
9a5aca8c | 4143 | |
fc830a83 | 4144 | case EF_ARM_EABI_VER1: |
9b485d32 | 4145 | fprintf (file, _(" [Version1 EABI]")); |
9a5aca8c | 4146 | |
fc830a83 | 4147 | if (flags & EF_ARM_SYMSARESORTED) |
9b485d32 | 4148 | fprintf (file, _(" [sorted symbol table]")); |
fc830a83 | 4149 | else |
9b485d32 | 4150 | fprintf (file, _(" [unsorted symbol table]")); |
9a5aca8c | 4151 | |
fc830a83 NC |
4152 | flags &= ~ EF_ARM_SYMSARESORTED; |
4153 | break; | |
9a5aca8c | 4154 | |
fd2ec330 PB |
4155 | case EF_ARM_EABI_VER2: |
4156 | fprintf (file, _(" [Version2 EABI]")); | |
4157 | ||
4158 | if (flags & EF_ARM_SYMSARESORTED) | |
4159 | fprintf (file, _(" [sorted symbol table]")); | |
4160 | else | |
4161 | fprintf (file, _(" [unsorted symbol table]")); | |
4162 | ||
4163 | if (flags & EF_ARM_DYNSYMSUSESEGIDX) | |
4164 | fprintf (file, _(" [dynamic symbols use segment index]")); | |
4165 | ||
4166 | if (flags & EF_ARM_MAPSYMSFIRST) | |
4167 | fprintf (file, _(" [mapping symbols precede others]")); | |
4168 | ||
99e4ae17 | 4169 | flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX |
fd2ec330 PB |
4170 | | EF_ARM_MAPSYMSFIRST); |
4171 | break; | |
4172 | ||
d507cf36 PB |
4173 | case EF_ARM_EABI_VER3: |
4174 | fprintf (file, _(" [Version3 EABI]")); | |
8cb51566 PB |
4175 | break; |
4176 | ||
4177 | case EF_ARM_EABI_VER4: | |
4178 | fprintf (file, _(" [Version4 EABI]")); | |
d507cf36 PB |
4179 | |
4180 | if (flags & EF_ARM_BE8) | |
4181 | fprintf (file, _(" [BE8]")); | |
4182 | ||
4183 | if (flags & EF_ARM_LE8) | |
4184 | fprintf (file, _(" [LE8]")); | |
4185 | ||
4186 | flags &= ~(EF_ARM_LE8 | EF_ARM_BE8); | |
4187 | break; | |
4188 | ||
fc830a83 | 4189 | default: |
9b485d32 | 4190 | fprintf (file, _(" <EABI version unrecognised>")); |
fc830a83 NC |
4191 | break; |
4192 | } | |
252b5132 | 4193 | |
fc830a83 | 4194 | flags &= ~ EF_ARM_EABIMASK; |
252b5132 | 4195 | |
fc830a83 | 4196 | if (flags & EF_ARM_RELEXEC) |
9b485d32 | 4197 | fprintf (file, _(" [relocatable executable]")); |
252b5132 | 4198 | |
fc830a83 | 4199 | if (flags & EF_ARM_HASENTRY) |
9b485d32 | 4200 | fprintf (file, _(" [has entry point]")); |
252b5132 | 4201 | |
fc830a83 NC |
4202 | flags &= ~ (EF_ARM_RELEXEC | EF_ARM_HASENTRY); |
4203 | ||
4204 | if (flags) | |
9b485d32 | 4205 | fprintf (file, _("<Unrecognised flag bits set>")); |
9a5aca8c | 4206 | |
252b5132 RH |
4207 | fputc ('\n', file); |
4208 | ||
b34976b6 | 4209 | return TRUE; |
252b5132 RH |
4210 | } |
4211 | ||
4212 | static int | |
57e8b36a | 4213 | elf32_arm_get_symbol_type (Elf_Internal_Sym * elf_sym, int type) |
252b5132 | 4214 | { |
2f0ca46a NC |
4215 | switch (ELF_ST_TYPE (elf_sym->st_info)) |
4216 | { | |
4217 | case STT_ARM_TFUNC: | |
4218 | return ELF_ST_TYPE (elf_sym->st_info); | |
ce855c42 | 4219 | |
2f0ca46a NC |
4220 | case STT_ARM_16BIT: |
4221 | /* If the symbol is not an object, return the STT_ARM_16BIT flag. | |
4222 | This allows us to distinguish between data used by Thumb instructions | |
4223 | and non-data (which is probably code) inside Thumb regions of an | |
4224 | executable. */ | |
4225 | if (type != STT_OBJECT) | |
4226 | return ELF_ST_TYPE (elf_sym->st_info); | |
4227 | break; | |
9a5aca8c | 4228 | |
ce855c42 NC |
4229 | default: |
4230 | break; | |
2f0ca46a NC |
4231 | } |
4232 | ||
4233 | return type; | |
252b5132 | 4234 | } |
f21f3fe0 | 4235 | |
252b5132 | 4236 | static asection * |
57e8b36a NC |
4237 | elf32_arm_gc_mark_hook (asection * sec, |
4238 | struct bfd_link_info * info ATTRIBUTE_UNUSED, | |
4239 | Elf_Internal_Rela * rel, | |
4240 | struct elf_link_hash_entry * h, | |
4241 | Elf_Internal_Sym * sym) | |
252b5132 RH |
4242 | { |
4243 | if (h != NULL) | |
4244 | { | |
4245 | switch (ELF32_R_TYPE (rel->r_info)) | |
4246 | { | |
4247 | case R_ARM_GNU_VTINHERIT: | |
4248 | case R_ARM_GNU_VTENTRY: | |
4249 | break; | |
4250 | ||
4251 | default: | |
4252 | switch (h->root.type) | |
4253 | { | |
4254 | case bfd_link_hash_defined: | |
4255 | case bfd_link_hash_defweak: | |
4256 | return h->root.u.def.section; | |
4257 | ||
4258 | case bfd_link_hash_common: | |
4259 | return h->root.u.c.p->section; | |
e049a0de ILT |
4260 | |
4261 | default: | |
4262 | break; | |
252b5132 RH |
4263 | } |
4264 | } | |
4265 | } | |
4266 | else | |
1e2f5b6e | 4267 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
9ad5cbcf | 4268 | |
252b5132 RH |
4269 | return NULL; |
4270 | } | |
4271 | ||
780a67af NC |
4272 | /* Update the got entry reference counts for the section being removed. */ |
4273 | ||
b34976b6 | 4274 | static bfd_boolean |
ba93b8ac DJ |
4275 | elf32_arm_gc_sweep_hook (bfd * abfd, |
4276 | struct bfd_link_info * info, | |
4277 | asection * sec, | |
4278 | const Elf_Internal_Rela * relocs) | |
252b5132 | 4279 | { |
5e681ec4 PB |
4280 | Elf_Internal_Shdr *symtab_hdr; |
4281 | struct elf_link_hash_entry **sym_hashes; | |
4282 | bfd_signed_vma *local_got_refcounts; | |
4283 | const Elf_Internal_Rela *rel, *relend; | |
eb043451 PB |
4284 | struct elf32_arm_link_hash_table * globals; |
4285 | ||
4286 | globals = elf32_arm_hash_table (info); | |
5e681ec4 PB |
4287 | |
4288 | elf_section_data (sec)->local_dynrel = NULL; | |
4289 | ||
4290 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
4291 | sym_hashes = elf_sym_hashes (abfd); | |
4292 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
4293 | ||
4294 | relend = relocs + sec->reloc_count; | |
4295 | for (rel = relocs; rel < relend; rel++) | |
eb043451 | 4296 | { |
3eb128b2 AM |
4297 | unsigned long r_symndx; |
4298 | struct elf_link_hash_entry *h = NULL; | |
eb043451 | 4299 | int r_type; |
5e681ec4 | 4300 | |
3eb128b2 AM |
4301 | r_symndx = ELF32_R_SYM (rel->r_info); |
4302 | if (r_symndx >= symtab_hdr->sh_info) | |
4303 | { | |
4304 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4305 | while (h->root.type == bfd_link_hash_indirect | |
4306 | || h->root.type == bfd_link_hash_warning) | |
4307 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4308 | } | |
4309 | ||
eb043451 | 4310 | r_type = ELF32_R_TYPE (rel->r_info); |
b6ee372a | 4311 | #ifndef OLD_ARM_ABI |
eb043451 | 4312 | r_type = arm_real_reloc_type (globals, r_type); |
b6ee372a | 4313 | #endif |
eb043451 PB |
4314 | switch (r_type) |
4315 | { | |
4316 | case R_ARM_GOT32: | |
4317 | #ifndef OLD_ARM_ABI | |
4318 | case R_ARM_GOT_PREL: | |
4319 | #endif | |
ba93b8ac DJ |
4320 | case R_ARM_TLS_GD32: |
4321 | case R_ARM_TLS_IE32: | |
3eb128b2 | 4322 | if (h != NULL) |
eb043451 | 4323 | { |
eb043451 PB |
4324 | if (h->got.refcount > 0) |
4325 | h->got.refcount -= 1; | |
4326 | } | |
4327 | else if (local_got_refcounts != NULL) | |
4328 | { | |
4329 | if (local_got_refcounts[r_symndx] > 0) | |
4330 | local_got_refcounts[r_symndx] -= 1; | |
4331 | } | |
4332 | break; | |
4333 | ||
ba93b8ac DJ |
4334 | case R_ARM_TLS_LDM32: |
4335 | elf32_arm_hash_table (info)->tls_ldm_got.refcount -= 1; | |
4336 | break; | |
4337 | ||
eb043451 PB |
4338 | case R_ARM_ABS32: |
4339 | case R_ARM_REL32: | |
4340 | case R_ARM_PC24: | |
4341 | case R_ARM_PLT32: | |
4342 | #ifndef OLD_ARM_ABI | |
5b5bb741 PB |
4343 | case R_ARM_CALL: |
4344 | case R_ARM_JUMP24: | |
eb043451 PB |
4345 | case R_ARM_PREL31: |
4346 | #endif | |
b7693d02 DJ |
4347 | case R_ARM_THM_PC22: |
4348 | /* Should the interworking branches be here also? */ | |
4349 | ||
3eb128b2 | 4350 | if (h != NULL) |
eb043451 PB |
4351 | { |
4352 | struct elf32_arm_link_hash_entry *eh; | |
4353 | struct elf32_arm_relocs_copied **pp; | |
4354 | struct elf32_arm_relocs_copied *p; | |
5e681ec4 | 4355 | |
b7693d02 | 4356 | eh = (struct elf32_arm_link_hash_entry *) h; |
5e681ec4 | 4357 | |
eb043451 | 4358 | if (h->plt.refcount > 0) |
b7693d02 DJ |
4359 | { |
4360 | h->plt.refcount -= 1; | |
4361 | if (ELF32_R_TYPE (rel->r_info) == R_ARM_THM_PC22) | |
4362 | eh->plt_thumb_refcount--; | |
4363 | } | |
5e681ec4 | 4364 | |
eb043451 | 4365 | if (r_type == R_ARM_ABS32 |
eb043451 PB |
4366 | || r_type == R_ARM_REL32) |
4367 | { | |
eb043451 PB |
4368 | for (pp = &eh->relocs_copied; (p = *pp) != NULL; |
4369 | pp = &p->next) | |
4370 | if (p->section == sec) | |
4371 | { | |
4372 | p->count -= 1; | |
ba93b8ac DJ |
4373 | if (ELF32_R_TYPE (rel->r_info) == R_ARM_REL32) |
4374 | p->pc_count -= 1; | |
eb043451 PB |
4375 | if (p->count == 0) |
4376 | *pp = p->next; | |
4377 | break; | |
4378 | } | |
4379 | } | |
4380 | } | |
4381 | break; | |
5e681ec4 | 4382 | |
eb043451 PB |
4383 | default: |
4384 | break; | |
4385 | } | |
4386 | } | |
5e681ec4 | 4387 | |
b34976b6 | 4388 | return TRUE; |
252b5132 RH |
4389 | } |
4390 | ||
780a67af NC |
4391 | /* Look through the relocs for a section during the first phase. */ |
4392 | ||
b34976b6 | 4393 | static bfd_boolean |
57e8b36a NC |
4394 | elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4395 | asection *sec, const Elf_Internal_Rela *relocs) | |
252b5132 | 4396 | { |
b34976b6 AM |
4397 | Elf_Internal_Shdr *symtab_hdr; |
4398 | struct elf_link_hash_entry **sym_hashes; | |
4399 | struct elf_link_hash_entry **sym_hashes_end; | |
4400 | const Elf_Internal_Rela *rel; | |
4401 | const Elf_Internal_Rela *rel_end; | |
4402 | bfd *dynobj; | |
5e681ec4 | 4403 | asection *sreloc; |
b34976b6 | 4404 | bfd_vma *local_got_offsets; |
5e681ec4 | 4405 | struct elf32_arm_link_hash_table *htab; |
9a5aca8c | 4406 | |
1049f94e | 4407 | if (info->relocatable) |
b34976b6 | 4408 | return TRUE; |
9a5aca8c | 4409 | |
5e681ec4 PB |
4410 | htab = elf32_arm_hash_table (info); |
4411 | sreloc = NULL; | |
9a5aca8c | 4412 | |
67687978 PB |
4413 | /* Create dynamic sections for relocatable executables so that we can |
4414 | copy relocations. */ | |
4415 | if (htab->root.is_relocatable_executable | |
4416 | && ! htab->root.dynamic_sections_created) | |
4417 | { | |
4418 | if (! _bfd_elf_link_create_dynamic_sections (abfd, info)) | |
4419 | return FALSE; | |
4420 | } | |
4421 | ||
252b5132 RH |
4422 | dynobj = elf_hash_table (info)->dynobj; |
4423 | local_got_offsets = elf_local_got_offsets (abfd); | |
f21f3fe0 | 4424 | |
252b5132 RH |
4425 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
4426 | sym_hashes = elf_sym_hashes (abfd); | |
9b485d32 NC |
4427 | sym_hashes_end = sym_hashes |
4428 | + symtab_hdr->sh_size / sizeof (Elf32_External_Sym); | |
4429 | ||
252b5132 RH |
4430 | if (!elf_bad_symtab (abfd)) |
4431 | sym_hashes_end -= symtab_hdr->sh_info; | |
9b485d32 | 4432 | |
252b5132 RH |
4433 | rel_end = relocs + sec->reloc_count; |
4434 | for (rel = relocs; rel < rel_end; rel++) | |
4435 | { | |
4436 | struct elf_link_hash_entry *h; | |
b7693d02 | 4437 | struct elf32_arm_link_hash_entry *eh; |
252b5132 | 4438 | unsigned long r_symndx; |
eb043451 | 4439 | int r_type; |
9a5aca8c | 4440 | |
252b5132 | 4441 | r_symndx = ELF32_R_SYM (rel->r_info); |
eb043451 PB |
4442 | r_type = ELF32_R_TYPE (rel->r_info); |
4443 | #ifndef OLD_ARM_ABI | |
4444 | r_type = arm_real_reloc_type (htab, r_type); | |
4445 | #endif | |
ba93b8ac DJ |
4446 | |
4447 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
4448 | { | |
4449 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd, | |
4450 | r_symndx); | |
4451 | return FALSE; | |
4452 | } | |
4453 | ||
252b5132 RH |
4454 | if (r_symndx < symtab_hdr->sh_info) |
4455 | h = NULL; | |
4456 | else | |
4457 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
9a5aca8c | 4458 | |
b7693d02 DJ |
4459 | eh = (struct elf32_arm_link_hash_entry *) h; |
4460 | ||
eb043451 | 4461 | switch (r_type) |
252b5132 | 4462 | { |
5e681ec4 | 4463 | case R_ARM_GOT32: |
eb043451 PB |
4464 | #ifndef OLD_ARM_ABI |
4465 | case R_ARM_GOT_PREL: | |
4466 | #endif | |
ba93b8ac DJ |
4467 | case R_ARM_TLS_GD32: |
4468 | case R_ARM_TLS_IE32: | |
5e681ec4 | 4469 | /* This symbol requires a global offset table entry. */ |
ba93b8ac DJ |
4470 | { |
4471 | int tls_type, old_tls_type; | |
5e681ec4 | 4472 | |
ba93b8ac DJ |
4473 | switch (r_type) |
4474 | { | |
4475 | case R_ARM_TLS_GD32: tls_type = GOT_TLS_GD; break; | |
4476 | case R_ARM_TLS_IE32: tls_type = GOT_TLS_IE; break; | |
4477 | default: tls_type = GOT_NORMAL; break; | |
4478 | } | |
252b5132 | 4479 | |
ba93b8ac DJ |
4480 | if (h != NULL) |
4481 | { | |
4482 | h->got.refcount++; | |
4483 | old_tls_type = elf32_arm_hash_entry (h)->tls_type; | |
4484 | } | |
4485 | else | |
4486 | { | |
4487 | bfd_signed_vma *local_got_refcounts; | |
4488 | ||
4489 | /* This is a global offset table entry for a local symbol. */ | |
4490 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
4491 | if (local_got_refcounts == NULL) | |
4492 | { | |
4493 | bfd_size_type size; | |
4494 | ||
4495 | size = symtab_hdr->sh_info; | |
4496 | size *= (sizeof (bfd_signed_vma) + sizeof(char)); | |
4497 | local_got_refcounts = bfd_zalloc (abfd, size); | |
4498 | if (local_got_refcounts == NULL) | |
4499 | return FALSE; | |
4500 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
4501 | elf32_arm_local_got_tls_type (abfd) | |
4502 | = (char *) (local_got_refcounts + symtab_hdr->sh_info); | |
4503 | } | |
4504 | local_got_refcounts[r_symndx] += 1; | |
4505 | old_tls_type = elf32_arm_local_got_tls_type (abfd) [r_symndx]; | |
4506 | } | |
4507 | ||
4508 | /* We will already have issued an error message if there is a | |
4509 | TLS / non-TLS mismatch, based on the symbol type. We don't | |
4510 | support any linker relaxations. So just combine any TLS | |
4511 | types needed. */ | |
4512 | if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL | |
4513 | && tls_type != GOT_NORMAL) | |
4514 | tls_type |= old_tls_type; | |
4515 | ||
4516 | if (old_tls_type != tls_type) | |
4517 | { | |
4518 | if (h != NULL) | |
4519 | elf32_arm_hash_entry (h)->tls_type = tls_type; | |
4520 | else | |
4521 | elf32_arm_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
4522 | } | |
4523 | } | |
4524 | /* Fall through */ | |
4525 | ||
4526 | case R_ARM_TLS_LDM32: | |
4527 | if (r_type == R_ARM_TLS_LDM32) | |
4528 | htab->tls_ldm_got.refcount++; | |
4529 | /* Fall through */ | |
252b5132 | 4530 | |
5e681ec4 PB |
4531 | case R_ARM_GOTOFF: |
4532 | case R_ARM_GOTPC: | |
4533 | if (htab->sgot == NULL) | |
4534 | { | |
4535 | if (htab->root.dynobj == NULL) | |
4536 | htab->root.dynobj = abfd; | |
4537 | if (!create_got_section (htab->root.dynobj, info)) | |
4538 | return FALSE; | |
4539 | } | |
252b5132 RH |
4540 | break; |
4541 | ||
4542 | case R_ARM_ABS32: | |
4543 | case R_ARM_REL32: | |
4544 | case R_ARM_PC24: | |
7359ea65 | 4545 | case R_ARM_PLT32: |
eb043451 | 4546 | #ifndef OLD_ARM_ABI |
5b5bb741 PB |
4547 | case R_ARM_CALL: |
4548 | case R_ARM_JUMP24: | |
eb043451 PB |
4549 | case R_ARM_PREL31: |
4550 | #endif | |
b7693d02 DJ |
4551 | case R_ARM_THM_PC22: |
4552 | /* Should the interworking branches be listed here? */ | |
7359ea65 | 4553 | if (h != NULL) |
5e681ec4 PB |
4554 | { |
4555 | /* If this reloc is in a read-only section, we might | |
4556 | need a copy reloc. We can't check reliably at this | |
4557 | stage whether the section is read-only, as input | |
4558 | sections have not yet been mapped to output sections. | |
4559 | Tentatively set the flag for now, and correct in | |
4560 | adjust_dynamic_symbol. */ | |
7359ea65 | 4561 | if (!info->shared) |
f5385ebf | 4562 | h->non_got_ref = 1; |
7359ea65 | 4563 | |
5e681ec4 | 4564 | /* We may need a .plt entry if the function this reloc |
c84cd8ee DJ |
4565 | refers to is in a different object. We can't tell for |
4566 | sure yet, because something later might force the | |
4567 | symbol local. */ | |
eb043451 | 4568 | if (r_type == R_ARM_PC24 |
5b5bb741 PB |
4569 | #ifndef OLD_ARM_ABI |
4570 | || r_type == R_ARM_CALL | |
4571 | || r_type == R_ARM_JUMP24 | |
ee06dc07 | 4572 | || r_type == R_ARM_PREL31 |
5b5bb741 | 4573 | #endif |
b7693d02 DJ |
4574 | || r_type == R_ARM_PLT32 |
4575 | || r_type == R_ARM_THM_PC22) | |
f5385ebf | 4576 | h->needs_plt = 1; |
4f199be3 DJ |
4577 | |
4578 | /* If we create a PLT entry, this relocation will reference | |
4579 | it, even if it's an ABS32 relocation. */ | |
4580 | h->plt.refcount += 1; | |
b7693d02 DJ |
4581 | |
4582 | if (r_type == R_ARM_THM_PC22) | |
4583 | eh->plt_thumb_refcount += 1; | |
5e681ec4 PB |
4584 | } |
4585 | ||
67687978 PB |
4586 | /* If we are creating a shared library or relocatable executable, |
4587 | and this is a reloc against a global symbol, or a non PC | |
4588 | relative reloc against a local symbol, then we need to copy | |
4589 | the reloc into the shared library. However, if we are linking | |
4590 | with -Bsymbolic, we do not need to copy a reloc against a | |
252b5132 RH |
4591 | global symbol which is defined in an object we are |
4592 | including in the link (i.e., DEF_REGULAR is set). At | |
4593 | this point we have not seen all the input files, so it is | |
4594 | possible that DEF_REGULAR is not set now but will be set | |
4595 | later (it is never cleared). We account for that | |
4596 | possibility below by storing information in the | |
5e681ec4 | 4597 | relocs_copied field of the hash table entry. */ |
67687978 | 4598 | if ((info->shared || htab->root.is_relocatable_executable) |
5e681ec4 | 4599 | && (sec->flags & SEC_ALLOC) != 0 |
71a976dd DJ |
4600 | && (r_type == R_ARM_ABS32 |
4601 | || (h != NULL && ! h->needs_plt | |
4602 | && (! info->symbolic || ! h->def_regular)))) | |
252b5132 | 4603 | { |
5e681ec4 PB |
4604 | struct elf32_arm_relocs_copied *p, **head; |
4605 | ||
252b5132 RH |
4606 | /* When creating a shared object, we must copy these |
4607 | reloc types into the output file. We create a reloc | |
4608 | section in dynobj and make room for this reloc. */ | |
4609 | if (sreloc == NULL) | |
4610 | { | |
4611 | const char * name; | |
4612 | ||
4613 | name = (bfd_elf_string_from_elf_section | |
4614 | (abfd, | |
4615 | elf_elfheader (abfd)->e_shstrndx, | |
4616 | elf_section_data (sec)->rel_hdr.sh_name)); | |
4617 | if (name == NULL) | |
b34976b6 | 4618 | return FALSE; |
252b5132 RH |
4619 | |
4620 | BFD_ASSERT (strncmp (name, ".rel", 4) == 0 | |
99e4ae17 | 4621 | && strcmp (bfd_get_section_name (abfd, sec), |
252b5132 RH |
4622 | name + 4) == 0); |
4623 | ||
4624 | sreloc = bfd_get_section_by_name (dynobj, name); | |
4625 | if (sreloc == NULL) | |
4626 | { | |
4627 | flagword flags; | |
4628 | ||
4629 | sreloc = bfd_make_section (dynobj, name); | |
4630 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
4631 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
e5a52504 MM |
4632 | if ((sec->flags & SEC_ALLOC) != 0 |
4633 | /* BPABI objects never have dynamic | |
4634 | relocations mapped. */ | |
4635 | && !htab->symbian_p) | |
252b5132 RH |
4636 | flags |= SEC_ALLOC | SEC_LOAD; |
4637 | if (sreloc == NULL | |
4638 | || ! bfd_set_section_flags (dynobj, sreloc, flags) | |
4639 | || ! bfd_set_section_alignment (dynobj, sreloc, 2)) | |
b34976b6 | 4640 | return FALSE; |
252b5132 | 4641 | } |
5e681ec4 PB |
4642 | |
4643 | elf_section_data (sec)->sreloc = sreloc; | |
252b5132 RH |
4644 | } |
4645 | ||
5e681ec4 PB |
4646 | /* If this is a global symbol, we count the number of |
4647 | relocations we need for this symbol. */ | |
4648 | if (h != NULL) | |
252b5132 | 4649 | { |
5e681ec4 PB |
4650 | head = &((struct elf32_arm_link_hash_entry *) h)->relocs_copied; |
4651 | } | |
4652 | else | |
4653 | { | |
4654 | /* Track dynamic relocs needed for local syms too. | |
4655 | We really need local syms available to do this | |
4656 | easily. Oh well. */ | |
57e8b36a | 4657 | |
5e681ec4 PB |
4658 | asection *s; |
4659 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
4660 | sec, r_symndx); | |
4661 | if (s == NULL) | |
4662 | return FALSE; | |
57e8b36a | 4663 | |
5e681ec4 PB |
4664 | head = ((struct elf32_arm_relocs_copied **) |
4665 | &elf_section_data (s)->local_dynrel); | |
4666 | } | |
57e8b36a | 4667 | |
5e681ec4 PB |
4668 | p = *head; |
4669 | if (p == NULL || p->section != sec) | |
4670 | { | |
4671 | bfd_size_type amt = sizeof *p; | |
57e8b36a | 4672 | |
5e681ec4 | 4673 | p = bfd_alloc (htab->root.dynobj, amt); |
252b5132 | 4674 | if (p == NULL) |
5e681ec4 PB |
4675 | return FALSE; |
4676 | p->next = *head; | |
4677 | *head = p; | |
4678 | p->section = sec; | |
4679 | p->count = 0; | |
ba93b8ac | 4680 | p->pc_count = 0; |
252b5132 | 4681 | } |
57e8b36a | 4682 | |
ba93b8ac DJ |
4683 | if (r_type == R_ARM_REL32) |
4684 | p->pc_count += 1; | |
71a976dd | 4685 | p->count += 1; |
252b5132 RH |
4686 | } |
4687 | break; | |
4688 | ||
4689 | /* This relocation describes the C++ object vtable hierarchy. | |
4690 | Reconstruct it for later use during GC. */ | |
4691 | case R_ARM_GNU_VTINHERIT: | |
c152c796 | 4692 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 4693 | return FALSE; |
252b5132 | 4694 | break; |
9a5aca8c | 4695 | |
252b5132 RH |
4696 | /* This relocation describes which C++ vtable entries are actually |
4697 | used. Record for later use during GC. */ | |
4698 | case R_ARM_GNU_VTENTRY: | |
c152c796 | 4699 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) |
b34976b6 | 4700 | return FALSE; |
252b5132 RH |
4701 | break; |
4702 | } | |
4703 | } | |
f21f3fe0 | 4704 | |
b34976b6 | 4705 | return TRUE; |
252b5132 RH |
4706 | } |
4707 | ||
3c9458e9 NC |
4708 | /* Treat mapping symbols as special target symbols. */ |
4709 | ||
4710 | static bfd_boolean | |
4711 | elf32_arm_is_target_special_symbol (bfd * abfd ATTRIBUTE_UNUSED, asymbol * sym) | |
4712 | { | |
9d2da7ca | 4713 | return bfd_elf32_is_arm_mapping_symbol_name (sym->name); |
3c9458e9 NC |
4714 | } |
4715 | ||
0367ecfb NC |
4716 | /* This is a copy of elf_find_function() from elf.c except that |
4717 | ARM mapping symbols are ignored when looking for function names | |
4718 | and STT_ARM_TFUNC is considered to a function type. */ | |
252b5132 | 4719 | |
0367ecfb NC |
4720 | static bfd_boolean |
4721 | arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED, | |
4722 | asection * section, | |
4723 | asymbol ** symbols, | |
4724 | bfd_vma offset, | |
4725 | const char ** filename_ptr, | |
4726 | const char ** functionname_ptr) | |
4727 | { | |
4728 | const char * filename = NULL; | |
4729 | asymbol * func = NULL; | |
4730 | bfd_vma low_func = 0; | |
4731 | asymbol ** p; | |
252b5132 RH |
4732 | |
4733 | for (p = symbols; *p != NULL; p++) | |
4734 | { | |
4735 | elf_symbol_type *q; | |
4736 | ||
4737 | q = (elf_symbol_type *) *p; | |
4738 | ||
252b5132 RH |
4739 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) |
4740 | { | |
4741 | default: | |
4742 | break; | |
4743 | case STT_FILE: | |
4744 | filename = bfd_asymbol_name (&q->symbol); | |
4745 | break; | |
252b5132 RH |
4746 | case STT_FUNC: |
4747 | case STT_ARM_TFUNC: | |
9d2da7ca | 4748 | case STT_NOTYPE: |
0367ecfb NC |
4749 | /* Skip $a and $t symbols. */ |
4750 | if ((q->symbol.flags & BSF_LOCAL) | |
9d2da7ca | 4751 | && bfd_elf32_is_arm_mapping_symbol_name (q->symbol.name)) |
0367ecfb NC |
4752 | continue; |
4753 | /* Fall through. */ | |
6b40fcba | 4754 | if (bfd_get_section (&q->symbol) == section |
252b5132 RH |
4755 | && q->symbol.value >= low_func |
4756 | && q->symbol.value <= offset) | |
4757 | { | |
4758 | func = (asymbol *) q; | |
4759 | low_func = q->symbol.value; | |
4760 | } | |
4761 | break; | |
4762 | } | |
4763 | } | |
4764 | ||
4765 | if (func == NULL) | |
b34976b6 | 4766 | return FALSE; |
252b5132 | 4767 | |
0367ecfb NC |
4768 | if (filename_ptr) |
4769 | *filename_ptr = filename; | |
4770 | if (functionname_ptr) | |
4771 | *functionname_ptr = bfd_asymbol_name (func); | |
4772 | ||
4773 | return TRUE; | |
4774 | } | |
4775 | ||
4776 | ||
4777 | /* Find the nearest line to a particular section and offset, for error | |
4778 | reporting. This code is a duplicate of the code in elf.c, except | |
4779 | that it uses arm_elf_find_function. */ | |
4780 | ||
4781 | static bfd_boolean | |
4782 | elf32_arm_find_nearest_line (bfd * abfd, | |
4783 | asection * section, | |
4784 | asymbol ** symbols, | |
4785 | bfd_vma offset, | |
4786 | const char ** filename_ptr, | |
4787 | const char ** functionname_ptr, | |
4788 | unsigned int * line_ptr) | |
4789 | { | |
4790 | bfd_boolean found = FALSE; | |
4791 | ||
4792 | /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */ | |
4793 | ||
4794 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
4795 | filename_ptr, functionname_ptr, | |
4796 | line_ptr, 0, | |
4797 | & elf_tdata (abfd)->dwarf2_find_line_info)) | |
4798 | { | |
4799 | if (!*functionname_ptr) | |
4800 | arm_elf_find_function (abfd, section, symbols, offset, | |
4801 | *filename_ptr ? NULL : filename_ptr, | |
4802 | functionname_ptr); | |
f21f3fe0 | 4803 | |
0367ecfb NC |
4804 | return TRUE; |
4805 | } | |
4806 | ||
4807 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
4808 | & found, filename_ptr, | |
4809 | functionname_ptr, line_ptr, | |
4810 | & elf_tdata (abfd)->line_info)) | |
4811 | return FALSE; | |
4812 | ||
4813 | if (found && (*functionname_ptr || *line_ptr)) | |
4814 | return TRUE; | |
4815 | ||
4816 | if (symbols == NULL) | |
4817 | return FALSE; | |
4818 | ||
4819 | if (! arm_elf_find_function (abfd, section, symbols, offset, | |
4820 | filename_ptr, functionname_ptr)) | |
4821 | return FALSE; | |
4822 | ||
4823 | *line_ptr = 0; | |
b34976b6 | 4824 | return TRUE; |
252b5132 RH |
4825 | } |
4826 | ||
4827 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
4828 | regular object. The current definition is in some section of the | |
4829 | dynamic object, but we're not including those sections. We have to | |
4830 | change the definition to something the rest of the link can | |
4831 | understand. */ | |
4832 | ||
b34976b6 | 4833 | static bfd_boolean |
57e8b36a NC |
4834 | elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info, |
4835 | struct elf_link_hash_entry * h) | |
252b5132 RH |
4836 | { |
4837 | bfd * dynobj; | |
4838 | asection * s; | |
4839 | unsigned int power_of_two; | |
b7693d02 | 4840 | struct elf32_arm_link_hash_entry * eh; |
67687978 | 4841 | struct elf32_arm_link_hash_table *globals; |
252b5132 | 4842 | |
67687978 | 4843 | globals = elf32_arm_hash_table (info); |
252b5132 RH |
4844 | dynobj = elf_hash_table (info)->dynobj; |
4845 | ||
4846 | /* Make sure we know what is going on here. */ | |
4847 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 4848 | && (h->needs_plt |
f6e332e6 | 4849 | || h->u.weakdef != NULL |
f5385ebf AM |
4850 | || (h->def_dynamic |
4851 | && h->ref_regular | |
4852 | && !h->def_regular))); | |
252b5132 | 4853 | |
b7693d02 DJ |
4854 | eh = (struct elf32_arm_link_hash_entry *) h; |
4855 | ||
252b5132 RH |
4856 | /* If this is a function, put it in the procedure linkage table. We |
4857 | will fill in the contents of the procedure linkage table later, | |
4858 | when we know the address of the .got section. */ | |
b7693d02 | 4859 | if (h->type == STT_FUNC || h->type == STT_ARM_TFUNC |
f5385ebf | 4860 | || h->needs_plt) |
252b5132 | 4861 | { |
5e681ec4 PB |
4862 | if (h->plt.refcount <= 0 |
4863 | || SYMBOL_CALLS_LOCAL (info, h) | |
4864 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
4865 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
4866 | { |
4867 | /* This case can occur if we saw a PLT32 reloc in an input | |
5e681ec4 PB |
4868 | file, but the symbol was never referred to by a dynamic |
4869 | object, or if all references were garbage collected. In | |
4870 | such a case, we don't actually need to build a procedure | |
4871 | linkage table, and we can just do a PC24 reloc instead. */ | |
4872 | h->plt.offset = (bfd_vma) -1; | |
b7693d02 | 4873 | eh->plt_thumb_refcount = 0; |
f5385ebf | 4874 | h->needs_plt = 0; |
252b5132 RH |
4875 | } |
4876 | ||
b34976b6 | 4877 | return TRUE; |
252b5132 | 4878 | } |
5e681ec4 | 4879 | else |
b7693d02 DJ |
4880 | { |
4881 | /* It's possible that we incorrectly decided a .plt reloc was | |
4882 | needed for an R_ARM_PC24 or similar reloc to a non-function sym | |
4883 | in check_relocs. We can't decide accurately between function | |
4884 | and non-function syms in check-relocs; Objects loaded later in | |
4885 | the link may change h->type. So fix it now. */ | |
4886 | h->plt.offset = (bfd_vma) -1; | |
4887 | eh->plt_thumb_refcount = 0; | |
4888 | } | |
252b5132 RH |
4889 | |
4890 | /* If this is a weak symbol, and there is a real definition, the | |
4891 | processor independent code will have arranged for us to see the | |
4892 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 4893 | if (h->u.weakdef != NULL) |
252b5132 | 4894 | { |
f6e332e6 AM |
4895 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
4896 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
4897 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
4898 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 4899 | return TRUE; |
252b5132 RH |
4900 | } |
4901 | ||
ba93b8ac DJ |
4902 | /* If there are no non-GOT references, we do not need a copy |
4903 | relocation. */ | |
4904 | if (!h->non_got_ref) | |
4905 | return TRUE; | |
4906 | ||
252b5132 RH |
4907 | /* This is a reference to a symbol defined by a dynamic object which |
4908 | is not a function. */ | |
4909 | ||
4910 | /* If we are creating a shared library, we must presume that the | |
4911 | only references to the symbol are via the global offset table. | |
4912 | For such cases we need not do anything here; the relocations will | |
67687978 PB |
4913 | be handled correctly by relocate_section. Relocatable executables |
4914 | can reference data in shared objects directly, so we don't need to | |
4915 | do anything here. */ | |
4916 | if (info->shared || globals->root.is_relocatable_executable) | |
b34976b6 | 4917 | return TRUE; |
252b5132 RH |
4918 | |
4919 | /* We must allocate the symbol in our .dynbss section, which will | |
4920 | become part of the .bss section of the executable. There will be | |
4921 | an entry for this symbol in the .dynsym section. The dynamic | |
4922 | object will contain position independent code, so all references | |
4923 | from the dynamic object to this symbol will go through the global | |
4924 | offset table. The dynamic linker will use the .dynsym entry to | |
4925 | determine the address it must put in the global offset table, so | |
4926 | both the dynamic object and the regular object will refer to the | |
4927 | same memory location for the variable. */ | |
252b5132 RH |
4928 | s = bfd_get_section_by_name (dynobj, ".dynbss"); |
4929 | BFD_ASSERT (s != NULL); | |
4930 | ||
4931 | /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to | |
4932 | copy the initial value out of the dynamic object and into the | |
4933 | runtime process image. We need to remember the offset into the | |
4934 | .rel.bss section we are going to use. */ | |
4935 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
4936 | { | |
4937 | asection *srel; | |
4938 | ||
4939 | srel = bfd_get_section_by_name (dynobj, ".rel.bss"); | |
4940 | BFD_ASSERT (srel != NULL); | |
eea6121a | 4941 | srel->size += sizeof (Elf32_External_Rel); |
f5385ebf | 4942 | h->needs_copy = 1; |
252b5132 RH |
4943 | } |
4944 | ||
4945 | /* We need to figure out the alignment required for this symbol. I | |
4946 | have no idea how ELF linkers handle this. */ | |
4947 | power_of_two = bfd_log2 (h->size); | |
4948 | if (power_of_two > 3) | |
4949 | power_of_two = 3; | |
4950 | ||
4951 | /* Apply the required alignment. */ | |
eea6121a | 4952 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
252b5132 RH |
4953 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) |
4954 | { | |
4955 | if (! bfd_set_section_alignment (dynobj, s, power_of_two)) | |
b34976b6 | 4956 | return FALSE; |
252b5132 RH |
4957 | } |
4958 | ||
4959 | /* Define the symbol as being at this point in the section. */ | |
4960 | h->root.u.def.section = s; | |
eea6121a | 4961 | h->root.u.def.value = s->size; |
252b5132 RH |
4962 | |
4963 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 4964 | s->size += h->size; |
252b5132 | 4965 | |
b34976b6 | 4966 | return TRUE; |
252b5132 RH |
4967 | } |
4968 | ||
5e681ec4 PB |
4969 | /* Allocate space in .plt, .got and associated reloc sections for |
4970 | dynamic relocs. */ | |
4971 | ||
4972 | static bfd_boolean | |
57e8b36a | 4973 | allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
5e681ec4 PB |
4974 | { |
4975 | struct bfd_link_info *info; | |
4976 | struct elf32_arm_link_hash_table *htab; | |
4977 | struct elf32_arm_link_hash_entry *eh; | |
4978 | struct elf32_arm_relocs_copied *p; | |
4979 | ||
b7693d02 DJ |
4980 | eh = (struct elf32_arm_link_hash_entry *) h; |
4981 | ||
5e681ec4 PB |
4982 | if (h->root.type == bfd_link_hash_indirect) |
4983 | return TRUE; | |
4984 | ||
4985 | if (h->root.type == bfd_link_hash_warning) | |
4986 | /* When warning symbols are created, they **replace** the "real" | |
4987 | entry in the hash table, thus we never get to see the real | |
4988 | symbol in a hash traversal. So look at it now. */ | |
4989 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4990 | ||
4991 | info = (struct bfd_link_info *) inf; | |
4992 | htab = elf32_arm_hash_table (info); | |
4993 | ||
4994 | if (htab->root.dynamic_sections_created | |
4995 | && h->plt.refcount > 0) | |
4996 | { | |
4997 | /* Make sure this symbol is output as a dynamic symbol. | |
4998 | Undefined weak syms won't yet be marked as dynamic. */ | |
4999 | if (h->dynindx == -1 | |
f5385ebf | 5000 | && !h->forced_local) |
5e681ec4 | 5001 | { |
c152c796 | 5002 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
5003 | return FALSE; |
5004 | } | |
5005 | ||
5006 | if (info->shared | |
7359ea65 | 5007 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
5e681ec4 PB |
5008 | { |
5009 | asection *s = htab->splt; | |
5010 | ||
5011 | /* If this is the first .plt entry, make room for the special | |
5012 | first entry. */ | |
eea6121a | 5013 | if (s->size == 0) |
e5a52504 | 5014 | s->size += htab->plt_header_size; |
5e681ec4 | 5015 | |
eea6121a | 5016 | h->plt.offset = s->size; |
5e681ec4 | 5017 | |
b7693d02 DJ |
5018 | /* If we will insert a Thumb trampoline before this PLT, leave room |
5019 | for it. */ | |
5020 | if (!htab->symbian_p && eh->plt_thumb_refcount > 0) | |
5021 | { | |
5022 | h->plt.offset += PLT_THUMB_STUB_SIZE; | |
5023 | s->size += PLT_THUMB_STUB_SIZE; | |
5024 | } | |
5025 | ||
5e681ec4 PB |
5026 | /* If this symbol is not defined in a regular file, and we are |
5027 | not generating a shared library, then set the symbol to this | |
5028 | location in the .plt. This is required to make function | |
5029 | pointers compare as equal between the normal executable and | |
5030 | the shared library. */ | |
5031 | if (! info->shared | |
f5385ebf | 5032 | && !h->def_regular) |
5e681ec4 PB |
5033 | { |
5034 | h->root.u.def.section = s; | |
5035 | h->root.u.def.value = h->plt.offset; | |
b7693d02 DJ |
5036 | |
5037 | /* Make sure the function is not marked as Thumb, in case | |
5038 | it is the target of an ABS32 relocation, which will | |
5039 | point to the PLT entry. */ | |
5040 | if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC) | |
5041 | h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC); | |
5e681ec4 PB |
5042 | } |
5043 | ||
5044 | /* Make room for this entry. */ | |
e5a52504 | 5045 | s->size += htab->plt_entry_size; |
5e681ec4 | 5046 | |
e5a52504 | 5047 | if (!htab->symbian_p) |
b7693d02 DJ |
5048 | { |
5049 | /* We also need to make an entry in the .got.plt section, which | |
5050 | will be placed in the .got section by the linker script. */ | |
5051 | eh->plt_got_offset = htab->sgotplt->size; | |
5052 | htab->sgotplt->size += 4; | |
5053 | } | |
5e681ec4 PB |
5054 | |
5055 | /* We also need to make an entry in the .rel.plt section. */ | |
eea6121a | 5056 | htab->srelplt->size += sizeof (Elf32_External_Rel); |
5e681ec4 PB |
5057 | } |
5058 | else | |
5059 | { | |
5060 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 5061 | h->needs_plt = 0; |
5e681ec4 PB |
5062 | } |
5063 | } | |
5064 | else | |
5065 | { | |
5066 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 5067 | h->needs_plt = 0; |
5e681ec4 PB |
5068 | } |
5069 | ||
5070 | if (h->got.refcount > 0) | |
5071 | { | |
5072 | asection *s; | |
5073 | bfd_boolean dyn; | |
ba93b8ac DJ |
5074 | int tls_type = elf32_arm_hash_entry (h)->tls_type; |
5075 | int indx; | |
5e681ec4 PB |
5076 | |
5077 | /* Make sure this symbol is output as a dynamic symbol. | |
5078 | Undefined weak syms won't yet be marked as dynamic. */ | |
5079 | if (h->dynindx == -1 | |
f5385ebf | 5080 | && !h->forced_local) |
5e681ec4 | 5081 | { |
c152c796 | 5082 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
5083 | return FALSE; |
5084 | } | |
5085 | ||
e5a52504 MM |
5086 | if (!htab->symbian_p) |
5087 | { | |
5088 | s = htab->sgot; | |
5089 | h->got.offset = s->size; | |
ba93b8ac DJ |
5090 | |
5091 | if (tls_type == GOT_UNKNOWN) | |
5092 | abort (); | |
5093 | ||
5094 | if (tls_type == GOT_NORMAL) | |
5095 | /* Non-TLS symbols need one GOT slot. */ | |
5096 | s->size += 4; | |
5097 | else | |
5098 | { | |
5099 | if (tls_type & GOT_TLS_GD) | |
5100 | /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */ | |
5101 | s->size += 8; | |
5102 | if (tls_type & GOT_TLS_IE) | |
5103 | /* R_ARM_TLS_IE32 needs one GOT slot. */ | |
5104 | s->size += 4; | |
5105 | } | |
5106 | ||
e5a52504 | 5107 | dyn = htab->root.dynamic_sections_created; |
ba93b8ac DJ |
5108 | |
5109 | indx = 0; | |
5110 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
5111 | && (!info->shared | |
5112 | || !SYMBOL_REFERENCES_LOCAL (info, h))) | |
5113 | indx = h->dynindx; | |
5114 | ||
5115 | if (tls_type != GOT_NORMAL | |
5116 | && (info->shared || indx != 0) | |
5117 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5118 | || h->root.type != bfd_link_hash_undefweak)) | |
5119 | { | |
5120 | if (tls_type & GOT_TLS_IE) | |
5121 | htab->srelgot->size += sizeof (Elf32_External_Rel); | |
5122 | ||
5123 | if (tls_type & GOT_TLS_GD) | |
5124 | htab->srelgot->size += sizeof (Elf32_External_Rel); | |
5125 | ||
5126 | if ((tls_type & GOT_TLS_GD) && indx != 0) | |
5127 | htab->srelgot->size += sizeof (Elf32_External_Rel); | |
5128 | } | |
5129 | else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5130 | || h->root.type != bfd_link_hash_undefweak) | |
5131 | && (info->shared | |
5132 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
e5a52504 MM |
5133 | htab->srelgot->size += sizeof (Elf32_External_Rel); |
5134 | } | |
5e681ec4 PB |
5135 | } |
5136 | else | |
5137 | h->got.offset = (bfd_vma) -1; | |
5138 | ||
5e681ec4 PB |
5139 | if (eh->relocs_copied == NULL) |
5140 | return TRUE; | |
5141 | ||
5142 | /* In the shared -Bsymbolic case, discard space allocated for | |
5143 | dynamic pc-relative relocs against symbols which turn out to be | |
5144 | defined in regular objects. For the normal shared case, discard | |
5145 | space for pc-relative relocs that have become local due to symbol | |
5146 | visibility changes. */ | |
5147 | ||
67687978 | 5148 | if (info->shared || htab->root.is_relocatable_executable) |
5e681ec4 | 5149 | { |
ba93b8ac DJ |
5150 | /* The only reloc that uses pc_count is R_ARM_REL32, which will |
5151 | appear on something like ".long foo - .". We want calls to | |
5152 | protected symbols to resolve directly to the function rather | |
5153 | than going via the plt. If people want function pointer | |
5154 | comparisons to work as expected then they should avoid | |
5155 | writing assembly like ".long foo - .". */ | |
5156 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
5157 | { | |
5158 | struct elf32_arm_relocs_copied **pp; | |
5159 | ||
5160 | for (pp = &eh->relocs_copied; (p = *pp) != NULL; ) | |
5161 | { | |
5162 | p->count -= p->pc_count; | |
5163 | p->pc_count = 0; | |
5164 | if (p->count == 0) | |
5165 | *pp = p->next; | |
5166 | else | |
5167 | pp = &p->next; | |
5168 | } | |
5169 | } | |
5170 | ||
5171 | /* Also discard relocs on undefined weak syms with non-default | |
7359ea65 | 5172 | visibility. */ |
5e681ec4 PB |
5173 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
5174 | && h->root.type == bfd_link_hash_undefweak) | |
5175 | eh->relocs_copied = NULL; | |
67687978 PB |
5176 | else if (htab->root.is_relocatable_executable && h->dynindx == -1 |
5177 | && h->root.type == bfd_link_hash_new) | |
5178 | { | |
5179 | /* Output absolute symbols so that we can create relocations | |
5180 | against them. For normal symbols we output a relocation | |
5181 | against the section that contains them. */ | |
5182 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
5183 | return FALSE; | |
5184 | } | |
5185 | ||
5e681ec4 PB |
5186 | } |
5187 | else | |
5188 | { | |
5189 | /* For the non-shared case, discard space for relocs against | |
5190 | symbols which turn out to need copy relocs or are not | |
5191 | dynamic. */ | |
5192 | ||
f5385ebf AM |
5193 | if (!h->non_got_ref |
5194 | && ((h->def_dynamic | |
5195 | && !h->def_regular) | |
5e681ec4 PB |
5196 | || (htab->root.dynamic_sections_created |
5197 | && (h->root.type == bfd_link_hash_undefweak | |
5198 | || h->root.type == bfd_link_hash_undefined)))) | |
5199 | { | |
5200 | /* Make sure this symbol is output as a dynamic symbol. | |
5201 | Undefined weak syms won't yet be marked as dynamic. */ | |
5202 | if (h->dynindx == -1 | |
f5385ebf | 5203 | && !h->forced_local) |
5e681ec4 | 5204 | { |
c152c796 | 5205 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
5206 | return FALSE; |
5207 | } | |
5208 | ||
5209 | /* If that succeeded, we know we'll be keeping all the | |
5210 | relocs. */ | |
5211 | if (h->dynindx != -1) | |
5212 | goto keep; | |
5213 | } | |
5214 | ||
5215 | eh->relocs_copied = NULL; | |
5216 | ||
5217 | keep: ; | |
5218 | } | |
5219 | ||
5220 | /* Finally, allocate space. */ | |
5221 | for (p = eh->relocs_copied; p != NULL; p = p->next) | |
5222 | { | |
5223 | asection *sreloc = elf_section_data (p->section)->sreloc; | |
eea6121a | 5224 | sreloc->size += p->count * sizeof (Elf32_External_Rel); |
5e681ec4 PB |
5225 | } |
5226 | ||
5227 | return TRUE; | |
5228 | } | |
5229 | ||
08d1f311 DJ |
5230 | /* Find any dynamic relocs that apply to read-only sections. */ |
5231 | ||
5232 | static bfd_boolean | |
5233 | elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry *h, PTR inf) | |
5234 | { | |
5235 | struct elf32_arm_link_hash_entry *eh; | |
5236 | struct elf32_arm_relocs_copied *p; | |
5237 | ||
5238 | if (h->root.type == bfd_link_hash_warning) | |
5239 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5240 | ||
5241 | eh = (struct elf32_arm_link_hash_entry *) h; | |
5242 | for (p = eh->relocs_copied; p != NULL; p = p->next) | |
5243 | { | |
5244 | asection *s = p->section; | |
5245 | ||
5246 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
5247 | { | |
5248 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
5249 | ||
5250 | info->flags |= DF_TEXTREL; | |
5251 | ||
5252 | /* Not an error, just cut short the traversal. */ | |
5253 | return FALSE; | |
5254 | } | |
5255 | } | |
5256 | return TRUE; | |
5257 | } | |
5258 | ||
252b5132 RH |
5259 | /* Set the sizes of the dynamic sections. */ |
5260 | ||
b34976b6 | 5261 | static bfd_boolean |
57e8b36a NC |
5262 | elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED, |
5263 | struct bfd_link_info * info) | |
252b5132 RH |
5264 | { |
5265 | bfd * dynobj; | |
5266 | asection * s; | |
b34976b6 AM |
5267 | bfd_boolean plt; |
5268 | bfd_boolean relocs; | |
5e681ec4 PB |
5269 | bfd *ibfd; |
5270 | struct elf32_arm_link_hash_table *htab; | |
252b5132 | 5271 | |
5e681ec4 | 5272 | htab = elf32_arm_hash_table (info); |
252b5132 RH |
5273 | dynobj = elf_hash_table (info)->dynobj; |
5274 | BFD_ASSERT (dynobj != NULL); | |
5275 | ||
5276 | if (elf_hash_table (info)->dynamic_sections_created) | |
5277 | { | |
5278 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 5279 | if (info->executable) |
252b5132 RH |
5280 | { |
5281 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
5282 | BFD_ASSERT (s != NULL); | |
eea6121a | 5283 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
252b5132 RH |
5284 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
5285 | } | |
5286 | } | |
5e681ec4 PB |
5287 | |
5288 | /* Set up .got offsets for local syms, and space for local dynamic | |
5289 | relocs. */ | |
5290 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
252b5132 | 5291 | { |
5e681ec4 PB |
5292 | bfd_signed_vma *local_got; |
5293 | bfd_signed_vma *end_local_got; | |
5294 | char *local_tls_type; | |
5295 | bfd_size_type locsymcount; | |
5296 | Elf_Internal_Shdr *symtab_hdr; | |
5297 | asection *srel; | |
5298 | ||
5299 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) | |
5300 | continue; | |
5301 | ||
5302 | for (s = ibfd->sections; s != NULL; s = s->next) | |
5303 | { | |
5304 | struct elf32_arm_relocs_copied *p; | |
5305 | ||
5306 | for (p = *((struct elf32_arm_relocs_copied **) | |
5307 | &elf_section_data (s)->local_dynrel); | |
5308 | p != NULL; | |
5309 | p = p->next) | |
5310 | { | |
5311 | if (!bfd_is_abs_section (p->section) | |
5312 | && bfd_is_abs_section (p->section->output_section)) | |
5313 | { | |
5314 | /* Input section has been discarded, either because | |
5315 | it is a copy of a linkonce section or due to | |
5316 | linker script /DISCARD/, so we'll be discarding | |
5317 | the relocs too. */ | |
5318 | } | |
5319 | else if (p->count != 0) | |
5320 | { | |
5321 | srel = elf_section_data (p->section)->sreloc; | |
eea6121a | 5322 | srel->size += p->count * sizeof (Elf32_External_Rel); |
5e681ec4 PB |
5323 | if ((p->section->output_section->flags & SEC_READONLY) != 0) |
5324 | info->flags |= DF_TEXTREL; | |
5325 | } | |
5326 | } | |
5327 | } | |
5328 | ||
5329 | local_got = elf_local_got_refcounts (ibfd); | |
5330 | if (!local_got) | |
5331 | continue; | |
5332 | ||
5333 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
5334 | locsymcount = symtab_hdr->sh_info; | |
5335 | end_local_got = local_got + locsymcount; | |
ba93b8ac | 5336 | local_tls_type = elf32_arm_local_got_tls_type (ibfd); |
5e681ec4 PB |
5337 | s = htab->sgot; |
5338 | srel = htab->srelgot; | |
5339 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) | |
5340 | { | |
5341 | if (*local_got > 0) | |
5342 | { | |
eea6121a | 5343 | *local_got = s->size; |
ba93b8ac DJ |
5344 | if (*local_tls_type & GOT_TLS_GD) |
5345 | /* TLS_GD relocs need an 8-byte structure in the GOT. */ | |
5346 | s->size += 8; | |
5347 | if (*local_tls_type & GOT_TLS_IE) | |
5348 | s->size += 4; | |
5349 | if (*local_tls_type == GOT_NORMAL) | |
5350 | s->size += 4; | |
5351 | ||
5352 | if (info->shared || *local_tls_type == GOT_TLS_GD) | |
eea6121a | 5353 | srel->size += sizeof (Elf32_External_Rel); |
5e681ec4 PB |
5354 | } |
5355 | else | |
5356 | *local_got = (bfd_vma) -1; | |
5357 | } | |
252b5132 RH |
5358 | } |
5359 | ||
ba93b8ac DJ |
5360 | if (htab->tls_ldm_got.refcount > 0) |
5361 | { | |
5362 | /* Allocate two GOT entries and one dynamic relocation (if necessary) | |
5363 | for R_ARM_TLS_LDM32 relocations. */ | |
5364 | htab->tls_ldm_got.offset = htab->sgot->size; | |
5365 | htab->sgot->size += 8; | |
5366 | if (info->shared) | |
5367 | htab->srelgot->size += sizeof (Elf32_External_Rel); | |
5368 | } | |
5369 | else | |
5370 | htab->tls_ldm_got.offset = -1; | |
5371 | ||
5e681ec4 PB |
5372 | /* Allocate global sym .plt and .got entries, and space for global |
5373 | sym dynamic relocs. */ | |
57e8b36a | 5374 | elf_link_hash_traverse (& htab->root, allocate_dynrelocs, info); |
252b5132 RH |
5375 | |
5376 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
5377 | determined the sizes of the various dynamic sections. Allocate | |
5378 | memory for them. */ | |
b34976b6 AM |
5379 | plt = FALSE; |
5380 | relocs = FALSE; | |
252b5132 RH |
5381 | for (s = dynobj->sections; s != NULL; s = s->next) |
5382 | { | |
5383 | const char * name; | |
b34976b6 | 5384 | bfd_boolean strip; |
252b5132 RH |
5385 | |
5386 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
5387 | continue; | |
5388 | ||
5389 | /* It's OK to base decisions on the section name, because none | |
5390 | of the dynobj section names depend upon the input files. */ | |
5391 | name = bfd_get_section_name (dynobj, s); | |
5392 | ||
b34976b6 | 5393 | strip = FALSE; |
252b5132 | 5394 | |
24a1ba0f | 5395 | if (strcmp (name, ".plt") == 0) |
252b5132 | 5396 | { |
eea6121a | 5397 | if (s->size == 0) |
252b5132 RH |
5398 | { |
5399 | /* Strip this section if we don't need it; see the | |
5400 | comment below. */ | |
b34976b6 | 5401 | strip = TRUE; |
252b5132 RH |
5402 | } |
5403 | else | |
5404 | { | |
5405 | /* Remember whether there is a PLT. */ | |
b34976b6 | 5406 | plt = TRUE; |
252b5132 RH |
5407 | } |
5408 | } | |
5409 | else if (strncmp (name, ".rel", 4) == 0) | |
5410 | { | |
eea6121a | 5411 | if (s->size == 0) |
252b5132 RH |
5412 | { |
5413 | /* If we don't need this section, strip it from the | |
5414 | output file. This is mostly to handle .rel.bss and | |
5415 | .rel.plt. We must create both sections in | |
5416 | create_dynamic_sections, because they must be created | |
5417 | before the linker maps input sections to output | |
5418 | sections. The linker does that before | |
5419 | adjust_dynamic_symbol is called, and it is that | |
5420 | function which decides whether anything needs to go | |
5421 | into these sections. */ | |
b34976b6 | 5422 | strip = TRUE; |
252b5132 RH |
5423 | } |
5424 | else | |
5425 | { | |
252b5132 RH |
5426 | /* Remember whether there are any reloc sections other |
5427 | than .rel.plt. */ | |
5428 | if (strcmp (name, ".rel.plt") != 0) | |
b34976b6 | 5429 | relocs = TRUE; |
252b5132 RH |
5430 | |
5431 | /* We use the reloc_count field as a counter if we need | |
5432 | to copy relocs into the output file. */ | |
5433 | s->reloc_count = 0; | |
5434 | } | |
5435 | } | |
5436 | else if (strncmp (name, ".got", 4) != 0) | |
5437 | { | |
5438 | /* It's not one of our sections, so don't allocate space. */ | |
5439 | continue; | |
5440 | } | |
5441 | ||
5442 | if (strip) | |
5443 | { | |
52585bb8 | 5444 | _bfd_strip_section_from_output (info, s); |
252b5132 RH |
5445 | continue; |
5446 | } | |
5447 | ||
5448 | /* Allocate memory for the section contents. */ | |
eea6121a AM |
5449 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
5450 | if (s->contents == NULL && s->size != 0) | |
b34976b6 | 5451 | return FALSE; |
252b5132 RH |
5452 | } |
5453 | ||
5454 | if (elf_hash_table (info)->dynamic_sections_created) | |
5455 | { | |
5456 | /* Add some entries to the .dynamic section. We fill in the | |
5457 | values later, in elf32_arm_finish_dynamic_sections, but we | |
5458 | must add the entries now so that we get the correct size for | |
5459 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
5460 | dynamic linker and used by the debugger. */ | |
dc810e39 | 5461 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 5462 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 AM |
5463 | |
5464 | if (!info->shared) | |
252b5132 | 5465 | { |
dc810e39 | 5466 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 5467 | return FALSE; |
252b5132 RH |
5468 | } |
5469 | ||
5470 | if (plt) | |
5471 | { | |
dc810e39 AM |
5472 | if ( !add_dynamic_entry (DT_PLTGOT, 0) |
5473 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
5474 | || !add_dynamic_entry (DT_PLTREL, DT_REL) | |
5475 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 5476 | return FALSE; |
252b5132 RH |
5477 | } |
5478 | ||
5479 | if (relocs) | |
5480 | { | |
dc810e39 AM |
5481 | if ( !add_dynamic_entry (DT_REL, 0) |
5482 | || !add_dynamic_entry (DT_RELSZ, 0) | |
5483 | || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel))) | |
b34976b6 | 5484 | return FALSE; |
252b5132 RH |
5485 | } |
5486 | ||
08d1f311 DJ |
5487 | /* If any dynamic relocs apply to a read-only section, |
5488 | then we need a DT_TEXTREL entry. */ | |
5489 | if ((info->flags & DF_TEXTREL) == 0) | |
5490 | elf_link_hash_traverse (&htab->root, elf32_arm_readonly_dynrelocs, | |
5491 | (PTR) info); | |
5492 | ||
99e4ae17 | 5493 | if ((info->flags & DF_TEXTREL) != 0) |
252b5132 | 5494 | { |
dc810e39 | 5495 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 5496 | return FALSE; |
d6cf2879 | 5497 | info->flags |= DF_TEXTREL; |
252b5132 RH |
5498 | } |
5499 | } | |
dc810e39 | 5500 | #undef add_synamic_entry |
252b5132 | 5501 | |
b34976b6 | 5502 | return TRUE; |
252b5132 RH |
5503 | } |
5504 | ||
252b5132 RH |
5505 | /* Finish up dynamic symbol handling. We set the contents of various |
5506 | dynamic sections here. */ | |
5507 | ||
b34976b6 | 5508 | static bfd_boolean |
57e8b36a NC |
5509 | elf32_arm_finish_dynamic_symbol (bfd * output_bfd, struct bfd_link_info * info, |
5510 | struct elf_link_hash_entry * h, Elf_Internal_Sym * sym) | |
252b5132 RH |
5511 | { |
5512 | bfd * dynobj; | |
e5a52504 | 5513 | struct elf32_arm_link_hash_table *htab; |
b7693d02 | 5514 | struct elf32_arm_link_hash_entry *eh; |
252b5132 RH |
5515 | |
5516 | dynobj = elf_hash_table (info)->dynobj; | |
e5a52504 | 5517 | htab = elf32_arm_hash_table (info); |
b7693d02 | 5518 | eh = (struct elf32_arm_link_hash_entry *) h; |
252b5132 RH |
5519 | |
5520 | if (h->plt.offset != (bfd_vma) -1) | |
5521 | { | |
5522 | asection * splt; | |
252b5132 | 5523 | asection * srel; |
e5a52504 | 5524 | bfd_byte *loc; |
24a1ba0f | 5525 | bfd_vma plt_index; |
947216bf | 5526 | Elf_Internal_Rela rel; |
252b5132 RH |
5527 | |
5528 | /* This symbol has an entry in the procedure linkage table. Set | |
5529 | it up. */ | |
5530 | ||
5531 | BFD_ASSERT (h->dynindx != -1); | |
5532 | ||
5533 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
252b5132 | 5534 | srel = bfd_get_section_by_name (dynobj, ".rel.plt"); |
e5a52504 | 5535 | BFD_ASSERT (splt != NULL && srel != NULL); |
252b5132 | 5536 | |
e5a52504 MM |
5537 | /* Fill in the entry in the procedure linkage table. */ |
5538 | if (htab->symbian_p) | |
5539 | { | |
5540 | unsigned i; | |
5541 | for (i = 0; i < htab->plt_entry_size / 4; ++i) | |
5542 | bfd_put_32 (output_bfd, | |
5543 | elf32_arm_symbian_plt_entry[i], | |
5544 | splt->contents + h->plt.offset + 4 * i); | |
5545 | ||
5546 | /* Fill in the entry in the .rel.plt section. */ | |
2a1b9a48 MM |
5547 | rel.r_offset = (splt->output_section->vma |
5548 | + splt->output_offset | |
e5a52504 MM |
5549 | + h->plt.offset + 4 * (i - 1)); |
5550 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT); | |
b7693d02 DJ |
5551 | |
5552 | /* Get the index in the procedure linkage table which | |
5553 | corresponds to this symbol. This is the index of this symbol | |
5554 | in all the symbols for which we are making plt entries. The | |
5555 | first entry in the procedure linkage table is reserved. */ | |
5556 | plt_index = ((h->plt.offset - htab->plt_header_size) | |
5557 | / htab->plt_entry_size); | |
e5a52504 MM |
5558 | } |
5559 | else | |
5560 | { | |
5561 | bfd_vma got_offset; | |
5562 | bfd_vma got_displacement; | |
5563 | asection * sgot; | |
5564 | ||
5565 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
5566 | BFD_ASSERT (sgot != NULL); | |
5567 | ||
b7693d02 DJ |
5568 | /* Get the offset into the .got.plt table of the entry that |
5569 | corresponds to this function. */ | |
5570 | got_offset = eh->plt_got_offset; | |
5571 | ||
5572 | /* Get the index in the procedure linkage table which | |
5573 | corresponds to this symbol. This is the index of this symbol | |
5574 | in all the symbols for which we are making plt entries. The | |
5575 | first three entries in .got.plt are reserved; after that | |
5576 | symbols appear in the same order as in .plt. */ | |
5577 | plt_index = (got_offset - 12) / 4; | |
e5a52504 MM |
5578 | |
5579 | /* Calculate the displacement between the PLT slot and the | |
b7693d02 DJ |
5580 | entry in the GOT. The eight-byte offset accounts for the |
5581 | value produced by adding to pc in the first instruction | |
5582 | of the PLT stub. */ | |
e5a52504 MM |
5583 | got_displacement = (sgot->output_section->vma |
5584 | + sgot->output_offset | |
5585 | + got_offset | |
5586 | - splt->output_section->vma | |
5587 | - splt->output_offset | |
5588 | - h->plt.offset | |
5589 | - 8); | |
5e681ec4 | 5590 | |
e5a52504 | 5591 | BFD_ASSERT ((got_displacement & 0xf0000000) == 0); |
5e681ec4 | 5592 | |
b7693d02 DJ |
5593 | if (eh->plt_thumb_refcount > 0) |
5594 | { | |
5595 | bfd_put_16 (output_bfd, elf32_arm_plt_thumb_stub[0], | |
5596 | splt->contents + h->plt.offset - 4); | |
5597 | bfd_put_16 (output_bfd, elf32_arm_plt_thumb_stub[1], | |
5598 | splt->contents + h->plt.offset - 2); | |
5599 | } | |
5600 | ||
e5a52504 MM |
5601 | bfd_put_32 (output_bfd, elf32_arm_plt_entry[0] | ((got_displacement & 0x0ff00000) >> 20), |
5602 | splt->contents + h->plt.offset + 0); | |
5603 | bfd_put_32 (output_bfd, elf32_arm_plt_entry[1] | ((got_displacement & 0x000ff000) >> 12), | |
5604 | splt->contents + h->plt.offset + 4); | |
5605 | bfd_put_32 (output_bfd, elf32_arm_plt_entry[2] | (got_displacement & 0x00000fff), | |
5606 | splt->contents + h->plt.offset + 8); | |
5e681ec4 | 5607 | #ifdef FOUR_WORD_PLT |
e5a52504 MM |
5608 | bfd_put_32 (output_bfd, elf32_arm_plt_entry[3], |
5609 | splt->contents + h->plt.offset + 12); | |
5e681ec4 | 5610 | #endif |
252b5132 | 5611 | |
e5a52504 MM |
5612 | /* Fill in the entry in the global offset table. */ |
5613 | bfd_put_32 (output_bfd, | |
5614 | (splt->output_section->vma | |
5615 | + splt->output_offset), | |
5616 | sgot->contents + got_offset); | |
5617 | ||
5618 | /* Fill in the entry in the .rel.plt section. */ | |
5619 | rel.r_offset = (sgot->output_section->vma | |
5620 | + sgot->output_offset | |
5621 | + got_offset); | |
5622 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_JUMP_SLOT); | |
5623 | } | |
57e8b36a | 5624 | |
947216bf AM |
5625 | loc = srel->contents + plt_index * sizeof (Elf32_External_Rel); |
5626 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); | |
252b5132 | 5627 | |
f5385ebf | 5628 | if (!h->def_regular) |
252b5132 RH |
5629 | { |
5630 | /* Mark the symbol as undefined, rather than as defined in | |
5631 | the .plt section. Leave the value alone. */ | |
5632 | sym->st_shndx = SHN_UNDEF; | |
d982ba73 PB |
5633 | /* If the symbol is weak, we do need to clear the value. |
5634 | Otherwise, the PLT entry would provide a definition for | |
5635 | the symbol even if the symbol wasn't defined anywhere, | |
5636 | and so the symbol would never be NULL. */ | |
f5385ebf | 5637 | if (!h->ref_regular_nonweak) |
d982ba73 | 5638 | sym->st_value = 0; |
252b5132 RH |
5639 | } |
5640 | } | |
5641 | ||
ba93b8ac DJ |
5642 | if (h->got.offset != (bfd_vma) -1 |
5643 | && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_GD) == 0 | |
5644 | && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_IE) == 0) | |
252b5132 RH |
5645 | { |
5646 | asection * sgot; | |
5647 | asection * srel; | |
947216bf AM |
5648 | Elf_Internal_Rela rel; |
5649 | bfd_byte *loc; | |
252b5132 RH |
5650 | |
5651 | /* This symbol has an entry in the global offset table. Set it | |
5652 | up. */ | |
252b5132 RH |
5653 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
5654 | srel = bfd_get_section_by_name (dynobj, ".rel.got"); | |
5655 | BFD_ASSERT (sgot != NULL && srel != NULL); | |
5656 | ||
5657 | rel.r_offset = (sgot->output_section->vma | |
5658 | + sgot->output_offset | |
dc810e39 | 5659 | + (h->got.offset &~ (bfd_vma) 1)); |
252b5132 | 5660 | |
5e681ec4 PB |
5661 | /* If this is a static link, or it is a -Bsymbolic link and the |
5662 | symbol is defined locally or was forced to be local because | |
5663 | of a version file, we just want to emit a RELATIVE reloc. | |
5664 | The entry in the global offset table will already have been | |
5665 | initialized in the relocate_section function. */ | |
252b5132 | 5666 | if (info->shared |
5e681ec4 PB |
5667 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
5668 | { | |
5669 | BFD_ASSERT((h->got.offset & 1) != 0); | |
5670 | rel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); | |
5671 | } | |
252b5132 RH |
5672 | else |
5673 | { | |
5e681ec4 | 5674 | BFD_ASSERT((h->got.offset & 1) == 0); |
252b5132 RH |
5675 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); |
5676 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT); | |
5677 | } | |
5678 | ||
947216bf AM |
5679 | loc = srel->contents + srel->reloc_count++ * sizeof (Elf32_External_Rel); |
5680 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); | |
252b5132 RH |
5681 | } |
5682 | ||
f5385ebf | 5683 | if (h->needs_copy) |
252b5132 RH |
5684 | { |
5685 | asection * s; | |
947216bf AM |
5686 | Elf_Internal_Rela rel; |
5687 | bfd_byte *loc; | |
252b5132 RH |
5688 | |
5689 | /* This symbol needs a copy reloc. Set it up. */ | |
252b5132 RH |
5690 | BFD_ASSERT (h->dynindx != -1 |
5691 | && (h->root.type == bfd_link_hash_defined | |
5692 | || h->root.type == bfd_link_hash_defweak)); | |
5693 | ||
5694 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
5695 | ".rel.bss"); | |
5696 | BFD_ASSERT (s != NULL); | |
5697 | ||
5698 | rel.r_offset = (h->root.u.def.value | |
5699 | + h->root.u.def.section->output_section->vma | |
5700 | + h->root.u.def.section->output_offset); | |
5701 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY); | |
947216bf AM |
5702 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rel); |
5703 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); | |
252b5132 RH |
5704 | } |
5705 | ||
5706 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
5707 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
5708 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
5709 | sym->st_shndx = SHN_ABS; | |
5710 | ||
b34976b6 | 5711 | return TRUE; |
252b5132 RH |
5712 | } |
5713 | ||
5714 | /* Finish up the dynamic sections. */ | |
5715 | ||
b34976b6 | 5716 | static bfd_boolean |
57e8b36a | 5717 | elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info) |
252b5132 RH |
5718 | { |
5719 | bfd * dynobj; | |
5720 | asection * sgot; | |
5721 | asection * sdyn; | |
5722 | ||
5723 | dynobj = elf_hash_table (info)->dynobj; | |
5724 | ||
5725 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
229fcec5 | 5726 | BFD_ASSERT (elf32_arm_hash_table (info)->symbian_p || sgot != NULL); |
252b5132 RH |
5727 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
5728 | ||
5729 | if (elf_hash_table (info)->dynamic_sections_created) | |
5730 | { | |
5731 | asection *splt; | |
5732 | Elf32_External_Dyn *dyncon, *dynconend; | |
229fcec5 | 5733 | struct elf32_arm_link_hash_table *htab; |
252b5132 | 5734 | |
229fcec5 | 5735 | htab = elf32_arm_hash_table (info); |
252b5132 | 5736 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
24a1ba0f | 5737 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
252b5132 RH |
5738 | |
5739 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 5740 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
9b485d32 | 5741 | |
252b5132 RH |
5742 | for (; dyncon < dynconend; dyncon++) |
5743 | { | |
5744 | Elf_Internal_Dyn dyn; | |
5745 | const char * name; | |
5746 | asection * s; | |
5747 | ||
5748 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
5749 | ||
5750 | switch (dyn.d_tag) | |
5751 | { | |
229fcec5 MM |
5752 | unsigned int type; |
5753 | ||
252b5132 RH |
5754 | default: |
5755 | break; | |
5756 | ||
229fcec5 MM |
5757 | case DT_HASH: |
5758 | name = ".hash"; | |
5759 | goto get_vma_if_bpabi; | |
5760 | case DT_STRTAB: | |
5761 | name = ".dynstr"; | |
5762 | goto get_vma_if_bpabi; | |
5763 | case DT_SYMTAB: | |
5764 | name = ".dynsym"; | |
5765 | goto get_vma_if_bpabi; | |
c0042f5d MM |
5766 | case DT_VERSYM: |
5767 | name = ".gnu.version"; | |
5768 | goto get_vma_if_bpabi; | |
5769 | case DT_VERDEF: | |
5770 | name = ".gnu.version_d"; | |
5771 | goto get_vma_if_bpabi; | |
5772 | case DT_VERNEED: | |
5773 | name = ".gnu.version_r"; | |
5774 | goto get_vma_if_bpabi; | |
5775 | ||
252b5132 RH |
5776 | case DT_PLTGOT: |
5777 | name = ".got"; | |
5778 | goto get_vma; | |
5779 | case DT_JMPREL: | |
5780 | name = ".rel.plt"; | |
5781 | get_vma: | |
5782 | s = bfd_get_section_by_name (output_bfd, name); | |
5783 | BFD_ASSERT (s != NULL); | |
229fcec5 MM |
5784 | if (!htab->symbian_p) |
5785 | dyn.d_un.d_ptr = s->vma; | |
5786 | else | |
5787 | /* In the BPABI, tags in the PT_DYNAMIC section point | |
5788 | at the file offset, not the memory address, for the | |
5789 | convenience of the post linker. */ | |
5790 | dyn.d_un.d_ptr = s->filepos; | |
252b5132 RH |
5791 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
5792 | break; | |
5793 | ||
229fcec5 MM |
5794 | get_vma_if_bpabi: |
5795 | if (htab->symbian_p) | |
5796 | goto get_vma; | |
5797 | break; | |
5798 | ||
252b5132 RH |
5799 | case DT_PLTRELSZ: |
5800 | s = bfd_get_section_by_name (output_bfd, ".rel.plt"); | |
5801 | BFD_ASSERT (s != NULL); | |
eea6121a | 5802 | dyn.d_un.d_val = s->size; |
252b5132 RH |
5803 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
5804 | break; | |
229fcec5 | 5805 | |
252b5132 | 5806 | case DT_RELSZ: |
229fcec5 MM |
5807 | if (!htab->symbian_p) |
5808 | { | |
5809 | /* My reading of the SVR4 ABI indicates that the | |
5810 | procedure linkage table relocs (DT_JMPREL) should be | |
5811 | included in the overall relocs (DT_REL). This is | |
5812 | what Solaris does. However, UnixWare can not handle | |
5813 | that case. Therefore, we override the DT_RELSZ entry | |
5814 | here to make it not include the JMPREL relocs. Since | |
5815 | the linker script arranges for .rel.plt to follow all | |
5816 | other relocation sections, we don't have to worry | |
5817 | about changing the DT_REL entry. */ | |
5818 | s = bfd_get_section_by_name (output_bfd, ".rel.plt"); | |
5819 | if (s != NULL) | |
5820 | dyn.d_un.d_val -= s->size; | |
5821 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
5822 | break; | |
5823 | } | |
5824 | /* Fall through */ | |
5825 | ||
5826 | case DT_REL: | |
5827 | case DT_RELA: | |
5828 | case DT_RELASZ: | |
5829 | /* In the BPABI, the DT_REL tag must point at the file | |
5830 | offset, not the VMA, of the first relocation | |
5831 | section. So, we use code similar to that in | |
5832 | elflink.c, but do not check for SHF_ALLOC on the | |
5833 | relcoation section, since relocations sections are | |
5834 | never allocated under the BPABI. The comments above | |
5835 | about Unixware notwithstanding, we include all of the | |
5836 | relocations here. */ | |
5837 | if (htab->symbian_p) | |
5838 | { | |
5839 | unsigned int i; | |
5840 | type = ((dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ) | |
5841 | ? SHT_REL : SHT_RELA); | |
5842 | dyn.d_un.d_val = 0; | |
5843 | for (i = 1; i < elf_numsections (output_bfd); i++) | |
5844 | { | |
5845 | Elf_Internal_Shdr *hdr | |
5846 | = elf_elfsections (output_bfd)[i]; | |
5847 | if (hdr->sh_type == type) | |
5848 | { | |
5849 | if (dyn.d_tag == DT_RELSZ | |
5850 | || dyn.d_tag == DT_RELASZ) | |
5851 | dyn.d_un.d_val += hdr->sh_size; | |
de52dba4 AM |
5852 | else if ((ufile_ptr) hdr->sh_offset |
5853 | <= dyn.d_un.d_val - 1) | |
229fcec5 MM |
5854 | dyn.d_un.d_val = hdr->sh_offset; |
5855 | } | |
5856 | } | |
5857 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
5858 | } | |
252b5132 | 5859 | break; |
88f7bcd5 NC |
5860 | |
5861 | /* Set the bottom bit of DT_INIT/FINI if the | |
5862 | corresponding function is Thumb. */ | |
5863 | case DT_INIT: | |
5864 | name = info->init_function; | |
5865 | goto get_sym; | |
5866 | case DT_FINI: | |
5867 | name = info->fini_function; | |
5868 | get_sym: | |
5869 | /* If it wasn't set by elf_bfd_final_link | |
4cc11e76 | 5870 | then there is nothing to adjust. */ |
88f7bcd5 NC |
5871 | if (dyn.d_un.d_val != 0) |
5872 | { | |
5873 | struct elf_link_hash_entry * eh; | |
5874 | ||
5875 | eh = elf_link_hash_lookup (elf_hash_table (info), name, | |
b34976b6 | 5876 | FALSE, FALSE, TRUE); |
88f7bcd5 NC |
5877 | if (eh != (struct elf_link_hash_entry *) NULL |
5878 | && ELF_ST_TYPE (eh->type) == STT_ARM_TFUNC) | |
5879 | { | |
5880 | dyn.d_un.d_val |= 1; | |
b34976b6 | 5881 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
88f7bcd5 NC |
5882 | } |
5883 | } | |
5884 | break; | |
252b5132 RH |
5885 | } |
5886 | } | |
5887 | ||
24a1ba0f | 5888 | /* Fill in the first entry in the procedure linkage table. */ |
e5a52504 | 5889 | if (splt->size > 0 && elf32_arm_hash_table (info)->plt_header_size) |
f7a74f8c | 5890 | { |
5e681ec4 PB |
5891 | bfd_vma got_displacement; |
5892 | ||
5893 | /* Calculate the displacement between the PLT slot and &GOT[0]. */ | |
5894 | got_displacement = (sgot->output_section->vma | |
5895 | + sgot->output_offset | |
5896 | - splt->output_section->vma | |
5897 | - splt->output_offset | |
5898 | - 16); | |
5899 | ||
f7a74f8c NC |
5900 | bfd_put_32 (output_bfd, elf32_arm_plt0_entry[0], splt->contents + 0); |
5901 | bfd_put_32 (output_bfd, elf32_arm_plt0_entry[1], splt->contents + 4); | |
5902 | bfd_put_32 (output_bfd, elf32_arm_plt0_entry[2], splt->contents + 8); | |
5903 | bfd_put_32 (output_bfd, elf32_arm_plt0_entry[3], splt->contents + 12); | |
5e681ec4 PB |
5904 | #ifdef FOUR_WORD_PLT |
5905 | /* The displacement value goes in the otherwise-unused last word of | |
5906 | the second entry. */ | |
5907 | bfd_put_32 (output_bfd, got_displacement, splt->contents + 28); | |
5908 | #else | |
5909 | bfd_put_32 (output_bfd, got_displacement, splt->contents + 16); | |
5910 | #endif | |
f7a74f8c | 5911 | } |
252b5132 RH |
5912 | |
5913 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
5914 | really seem like the right value. */ | |
5915 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; | |
5916 | } | |
5917 | ||
5918 | /* Fill in the first three entries in the global offset table. */ | |
229fcec5 | 5919 | if (sgot) |
252b5132 | 5920 | { |
229fcec5 MM |
5921 | if (sgot->size > 0) |
5922 | { | |
5923 | if (sdyn == NULL) | |
5924 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
5925 | else | |
5926 | bfd_put_32 (output_bfd, | |
5927 | sdyn->output_section->vma + sdyn->output_offset, | |
5928 | sgot->contents); | |
5929 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
5930 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
5931 | } | |
252b5132 | 5932 | |
229fcec5 MM |
5933 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; |
5934 | } | |
252b5132 | 5935 | |
b34976b6 | 5936 | return TRUE; |
252b5132 RH |
5937 | } |
5938 | ||
ba96a88f | 5939 | static void |
57e8b36a | 5940 | elf32_arm_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED) |
ba96a88f | 5941 | { |
9b485d32 | 5942 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ |
e489d0ae | 5943 | struct elf32_arm_link_hash_table *globals; |
ba96a88f NC |
5944 | |
5945 | i_ehdrp = elf_elfheader (abfd); | |
5946 | ||
94a3258f PB |
5947 | if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_UNKNOWN) |
5948 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_ARM; | |
5949 | else | |
5950 | i_ehdrp->e_ident[EI_OSABI] = 0; | |
ba96a88f | 5951 | i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION; |
e489d0ae | 5952 | |
93204d3a PB |
5953 | if (link_info) |
5954 | { | |
5955 | globals = elf32_arm_hash_table (link_info); | |
5956 | if (globals->byteswap_code) | |
5957 | i_ehdrp->e_flags |= EF_ARM_BE8; | |
5958 | } | |
ba96a88f NC |
5959 | } |
5960 | ||
99e4ae17 | 5961 | static enum elf_reloc_type_class |
57e8b36a | 5962 | elf32_arm_reloc_type_class (const Elf_Internal_Rela *rela) |
99e4ae17 | 5963 | { |
f51e552e | 5964 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
99e4ae17 AJ |
5965 | { |
5966 | case R_ARM_RELATIVE: | |
5967 | return reloc_class_relative; | |
5968 | case R_ARM_JUMP_SLOT: | |
5969 | return reloc_class_plt; | |
5970 | case R_ARM_COPY: | |
5971 | return reloc_class_copy; | |
5972 | default: | |
5973 | return reloc_class_normal; | |
5974 | } | |
5975 | } | |
5976 | ||
e16bb312 NC |
5977 | /* Set the right machine number for an Arm ELF file. */ |
5978 | ||
5979 | static bfd_boolean | |
57e8b36a | 5980 | elf32_arm_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr) |
e16bb312 NC |
5981 | { |
5982 | if (hdr->sh_type == SHT_NOTE) | |
5983 | *flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
5984 | ||
5985 | return TRUE; | |
5986 | } | |
5987 | ||
e489d0ae | 5988 | static void |
57e8b36a | 5989 | elf32_arm_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) |
e16bb312 | 5990 | { |
5a6c6817 | 5991 | bfd_arm_update_notes (abfd, ARM_NOTE_SECTION); |
e16bb312 NC |
5992 | } |
5993 | ||
40a18ebd NC |
5994 | /* Return TRUE if this is an unwinding table entry. */ |
5995 | ||
5996 | static bfd_boolean | |
5997 | is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name) | |
5998 | { | |
5999 | size_t len1, len2; | |
6000 | ||
6001 | len1 = sizeof (ELF_STRING_ARM_unwind) - 1; | |
6002 | len2 = sizeof (ELF_STRING_ARM_unwind_once) - 1; | |
6003 | return (strncmp (name, ELF_STRING_ARM_unwind, len1) == 0 | |
6004 | || strncmp (name, ELF_STRING_ARM_unwind_once, len2) == 0); | |
6005 | } | |
6006 | ||
6007 | ||
6008 | /* Set the type and flags for an ARM section. We do this by | |
6009 | the section name, which is a hack, but ought to work. */ | |
6010 | ||
6011 | static bfd_boolean | |
6012 | elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec) | |
6013 | { | |
6014 | const char * name; | |
6015 | ||
6016 | name = bfd_get_section_name (abfd, sec); | |
6017 | ||
6018 | if (is_arm_elf_unwind_section_name (abfd, name)) | |
6019 | { | |
6020 | hdr->sh_type = SHT_ARM_EXIDX; | |
6021 | hdr->sh_flags |= SHF_LINK_ORDER; | |
6022 | } | |
6023 | return TRUE; | |
6024 | } | |
6025 | ||
6dc132d9 L |
6026 | /* Handle an ARM specific section when reading an object file. This is |
6027 | called when bfd_section_from_shdr finds a section with an unknown | |
6028 | type. */ | |
40a18ebd NC |
6029 | |
6030 | static bfd_boolean | |
6031 | elf32_arm_section_from_shdr (bfd *abfd, | |
6032 | Elf_Internal_Shdr * hdr, | |
6dc132d9 L |
6033 | const char *name, |
6034 | int shindex) | |
40a18ebd NC |
6035 | { |
6036 | /* There ought to be a place to keep ELF backend specific flags, but | |
6037 | at the moment there isn't one. We just keep track of the | |
6038 | sections by their name, instead. Fortunately, the ABI gives | |
6039 | names for all the ARM specific sections, so we will probably get | |
6040 | away with this. */ | |
6041 | switch (hdr->sh_type) | |
6042 | { | |
6043 | case SHT_ARM_EXIDX: | |
6044 | break; | |
6045 | ||
6046 | default: | |
6047 | return FALSE; | |
6048 | } | |
6049 | ||
6dc132d9 | 6050 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
40a18ebd NC |
6051 | return FALSE; |
6052 | ||
6053 | return TRUE; | |
6054 | } | |
e489d0ae PB |
6055 | |
6056 | /* Called for each symbol. Builds a section map based on mapping symbols. | |
6057 | Does not alter any of the symbols. */ | |
6058 | ||
6059 | static bfd_boolean | |
6060 | elf32_arm_output_symbol_hook (struct bfd_link_info *info, | |
6061 | const char *name, | |
6062 | Elf_Internal_Sym *elfsym, | |
6063 | asection *input_sec, | |
6064 | struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) | |
6065 | { | |
6066 | int mapcount; | |
6067 | elf32_arm_section_map *map; | |
6068 | struct elf32_arm_link_hash_table *globals; | |
6069 | ||
6070 | /* Only do this on final link. */ | |
6071 | if (info->relocatable) | |
6072 | return TRUE; | |
6073 | ||
6074 | /* Only build a map if we need to byteswap code. */ | |
6075 | globals = elf32_arm_hash_table (info); | |
6076 | if (!globals->byteswap_code) | |
6077 | return TRUE; | |
6078 | ||
6079 | /* We only want mapping symbols. */ | |
9d2da7ca | 6080 | if (! bfd_elf32_is_arm_mapping_symbol_name (name)) |
e489d0ae PB |
6081 | return TRUE; |
6082 | ||
6083 | mapcount = ++(elf32_arm_section_data (input_sec)->mapcount); | |
6084 | map = elf32_arm_section_data (input_sec)->map; | |
6085 | /* TODO: This may be inefficient, but we probably don't usually have many | |
6086 | mapping symbols per section. */ | |
6087 | map = bfd_realloc (map, mapcount * sizeof (elf32_arm_section_map)); | |
6088 | elf32_arm_section_data (input_sec)->map = map; | |
57e8b36a | 6089 | |
e489d0ae PB |
6090 | map[mapcount - 1].vma = elfsym->st_value; |
6091 | map[mapcount - 1].type = name[1]; | |
6092 | return TRUE; | |
6093 | } | |
6094 | ||
6095 | ||
6096 | /* Allocate target specific section data. */ | |
6097 | ||
6098 | static bfd_boolean | |
6099 | elf32_arm_new_section_hook (bfd *abfd, asection *sec) | |
6100 | { | |
6101 | struct _arm_elf_section_data *sdata; | |
6102 | bfd_size_type amt = sizeof (*sdata); | |
6103 | ||
6104 | sdata = bfd_zalloc (abfd, amt); | |
6105 | if (sdata == NULL) | |
6106 | return FALSE; | |
6107 | sec->used_by_bfd = sdata; | |
6108 | ||
6109 | return _bfd_elf_new_section_hook (abfd, sec); | |
6110 | } | |
6111 | ||
6112 | ||
6113 | /* Used to order a list of mapping symbols by address. */ | |
6114 | ||
6115 | static int | |
6116 | elf32_arm_compare_mapping (const void * a, const void * b) | |
6117 | { | |
6118 | return ((const elf32_arm_section_map *) a)->vma | |
6119 | > ((const elf32_arm_section_map *) b)->vma; | |
6120 | } | |
6121 | ||
6122 | ||
6123 | /* Do code byteswapping. Return FALSE afterwards so that the section is | |
6124 | written out as normal. */ | |
6125 | ||
6126 | static bfd_boolean | |
6127 | elf32_arm_write_section (bfd *output_bfd ATTRIBUTE_UNUSED, asection *sec, | |
6128 | bfd_byte *contents) | |
6129 | { | |
6130 | int mapcount; | |
6131 | elf32_arm_section_map *map; | |
6132 | bfd_vma ptr; | |
6133 | bfd_vma end; | |
6134 | bfd_vma offset; | |
6135 | bfd_byte tmp; | |
6136 | int i; | |
57e8b36a | 6137 | |
e489d0ae PB |
6138 | mapcount = elf32_arm_section_data (sec)->mapcount; |
6139 | map = elf32_arm_section_data (sec)->map; | |
6140 | ||
6141 | if (mapcount == 0) | |
6142 | return FALSE; | |
6143 | ||
6144 | qsort (map, mapcount, sizeof (elf32_arm_section_map), | |
6145 | elf32_arm_compare_mapping); | |
6146 | ||
6147 | offset = sec->output_section->vma + sec->output_offset; | |
6148 | ptr = map[0].vma - offset; | |
6149 | for (i = 0; i < mapcount; i++) | |
6150 | { | |
6151 | if (i == mapcount - 1) | |
eea6121a | 6152 | end = sec->size; |
e489d0ae PB |
6153 | else |
6154 | end = map[i + 1].vma - offset; | |
57e8b36a | 6155 | |
e489d0ae PB |
6156 | switch (map[i].type) |
6157 | { | |
6158 | case 'a': | |
6159 | /* Byte swap code words. */ | |
6160 | while (ptr + 3 < end) | |
6161 | { | |
6162 | tmp = contents[ptr]; | |
6163 | contents[ptr] = contents[ptr + 3]; | |
6164 | contents[ptr + 3] = tmp; | |
6165 | tmp = contents[ptr + 1]; | |
6166 | contents[ptr + 1] = contents[ptr + 2]; | |
6167 | contents[ptr + 2] = tmp; | |
6168 | ptr += 4; | |
6169 | } | |
6170 | break; | |
6171 | ||
6172 | case 't': | |
6173 | /* Byte swap code halfwords. */ | |
6174 | while (ptr + 1 < end) | |
6175 | { | |
6176 | tmp = contents[ptr]; | |
6177 | contents[ptr] = contents[ptr + 1]; | |
6178 | contents[ptr + 1] = tmp; | |
6179 | ptr += 2; | |
6180 | } | |
6181 | break; | |
6182 | ||
6183 | case 'd': | |
6184 | /* Leave data alone. */ | |
6185 | break; | |
6186 | } | |
6187 | ptr = end; | |
6188 | } | |
93204d3a | 6189 | free (map); |
e489d0ae PB |
6190 | return FALSE; |
6191 | } | |
6192 | ||
b7693d02 DJ |
6193 | /* Display STT_ARM_TFUNC symbols as functions. */ |
6194 | ||
6195 | static void | |
6196 | elf32_arm_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, | |
6197 | asymbol *asym) | |
6198 | { | |
6199 | elf_symbol_type *elfsym = (elf_symbol_type *) asym; | |
6200 | ||
6201 | if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_ARM_TFUNC) | |
6202 | elfsym->symbol.flags |= BSF_FUNCTION; | |
6203 | } | |
6204 | ||
0beaef2b PB |
6205 | |
6206 | /* Mangle thumb function symbols as we read them in. */ | |
6207 | ||
6208 | static void | |
6209 | elf32_arm_swap_symbol_in (bfd * abfd, | |
6210 | const void *psrc, | |
6211 | const void *pshn, | |
6212 | Elf_Internal_Sym *dst) | |
6213 | { | |
6214 | bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst); | |
6215 | ||
6216 | /* New EABI objects mark thumb function symbols by setting the low bit of | |
6217 | the address. Turn these into STT_ARM_TFUNC. */ | |
6218 | if (ELF_ST_TYPE (dst->st_info) == STT_FUNC | |
6219 | && (dst->st_value & 1)) | |
6220 | { | |
6221 | dst->st_info = ELF_ST_INFO (ELF_ST_BIND (dst->st_info), STT_ARM_TFUNC); | |
6222 | dst->st_value &= ~(bfd_vma) 1; | |
6223 | } | |
6224 | } | |
6225 | ||
6226 | ||
6227 | /* Mangle thumb function symbols as we write them out. */ | |
6228 | ||
6229 | static void | |
6230 | elf32_arm_swap_symbol_out (bfd *abfd, | |
6231 | const Elf_Internal_Sym *src, | |
6232 | void *cdst, | |
6233 | void *shndx) | |
6234 | { | |
6235 | Elf_Internal_Sym newsym; | |
6236 | ||
6237 | /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit | |
6238 | of the address set, as per the new EABI. We do this unconditionally | |
6239 | because objcopy does not set the elf header flags until after | |
6240 | it writes out the symbol table. */ | |
6241 | if (ELF_ST_TYPE (src->st_info) == STT_ARM_TFUNC) | |
6242 | { | |
6243 | newsym = *src; | |
6244 | newsym.st_info = ELF_ST_INFO (ELF_ST_BIND (src->st_info), STT_FUNC); | |
6245 | newsym.st_value |= 1; | |
6246 | ||
6247 | src = &newsym; | |
6248 | } | |
6249 | bfd_elf32_swap_symbol_out (abfd, src, cdst, shndx); | |
6250 | } | |
6251 | ||
b294bdf8 MM |
6252 | /* Add the PT_ARM_EXIDX program header. */ |
6253 | ||
6254 | static bfd_boolean | |
6255 | elf32_arm_modify_segment_map (bfd *abfd, | |
6256 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
6257 | { | |
6258 | struct elf_segment_map *m; | |
6259 | asection *sec; | |
6260 | ||
6261 | sec = bfd_get_section_by_name (abfd, ".ARM.exidx"); | |
6262 | if (sec != NULL && (sec->flags & SEC_LOAD) != 0) | |
6263 | { | |
6264 | /* If there is already a PT_ARM_EXIDX header, then we do not | |
6265 | want to add another one. This situation arises when running | |
6266 | "strip"; the input binary already has the header. */ | |
6267 | m = elf_tdata (abfd)->segment_map; | |
6268 | while (m && m->p_type != PT_ARM_EXIDX) | |
6269 | m = m->next; | |
6270 | if (!m) | |
6271 | { | |
6272 | m = bfd_zalloc (abfd, sizeof (struct elf_segment_map)); | |
6273 | if (m == NULL) | |
6274 | return FALSE; | |
6275 | m->p_type = PT_ARM_EXIDX; | |
6276 | m->count = 1; | |
6277 | m->sections[0] = sec; | |
6278 | ||
6279 | m->next = elf_tdata (abfd)->segment_map; | |
6280 | elf_tdata (abfd)->segment_map = m; | |
6281 | } | |
6282 | } | |
6283 | ||
6284 | return TRUE; | |
6285 | } | |
6286 | ||
6287 | /* We may add a PT_ARM_EXIDX program header. */ | |
6288 | ||
6289 | static int | |
6290 | elf32_arm_additional_program_headers (bfd *abfd) | |
6291 | { | |
6292 | asection *sec; | |
6293 | ||
6294 | sec = bfd_get_section_by_name (abfd, ".ARM.exidx"); | |
6295 | if (sec != NULL && (sec->flags & SEC_LOAD) != 0) | |
6296 | return 1; | |
6297 | else | |
6298 | return 0; | |
6299 | } | |
6300 | ||
0beaef2b PB |
6301 | /* We use this to override swap_symbol_in and swap_symbol_out. */ |
6302 | const struct elf_size_info elf32_arm_size_info = { | |
6303 | sizeof (Elf32_External_Ehdr), | |
6304 | sizeof (Elf32_External_Phdr), | |
6305 | sizeof (Elf32_External_Shdr), | |
6306 | sizeof (Elf32_External_Rel), | |
6307 | sizeof (Elf32_External_Rela), | |
6308 | sizeof (Elf32_External_Sym), | |
6309 | sizeof (Elf32_External_Dyn), | |
6310 | sizeof (Elf_External_Note), | |
6311 | 4, | |
6312 | 1, | |
6313 | 32, 2, | |
6314 | ELFCLASS32, EV_CURRENT, | |
6315 | bfd_elf32_write_out_phdrs, | |
6316 | bfd_elf32_write_shdrs_and_ehdr, | |
6317 | bfd_elf32_write_relocs, | |
6318 | elf32_arm_swap_symbol_in, | |
6319 | elf32_arm_swap_symbol_out, | |
6320 | bfd_elf32_slurp_reloc_table, | |
6321 | bfd_elf32_slurp_symbol_table, | |
6322 | bfd_elf32_swap_dyn_in, | |
6323 | bfd_elf32_swap_dyn_out, | |
6324 | bfd_elf32_swap_reloc_in, | |
6325 | bfd_elf32_swap_reloc_out, | |
6326 | bfd_elf32_swap_reloca_in, | |
6327 | bfd_elf32_swap_reloca_out | |
6328 | }; | |
6329 | ||
252b5132 RH |
6330 | #define ELF_ARCH bfd_arch_arm |
6331 | #define ELF_MACHINE_CODE EM_ARM | |
d0facd1b NC |
6332 | #ifdef __QNXTARGET__ |
6333 | #define ELF_MAXPAGESIZE 0x1000 | |
6334 | #else | |
f21f3fe0 | 6335 | #define ELF_MAXPAGESIZE 0x8000 |
d0facd1b | 6336 | #endif |
b1342370 | 6337 | #define ELF_MINPAGESIZE 0x1000 |
252b5132 | 6338 | |
ba93b8ac DJ |
6339 | #define bfd_elf32_mkobject elf32_arm_mkobject |
6340 | ||
99e4ae17 AJ |
6341 | #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data |
6342 | #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data | |
252b5132 RH |
6343 | #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags |
6344 | #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data | |
6345 | #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create | |
dc810e39 | 6346 | #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup |
252b5132 | 6347 | #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line |
e489d0ae | 6348 | #define bfd_elf32_new_section_hook elf32_arm_new_section_hook |
3c9458e9 | 6349 | #define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol |
252b5132 RH |
6350 | |
6351 | #define elf_backend_get_symbol_type elf32_arm_get_symbol_type | |
6352 | #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook | |
6353 | #define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook | |
6354 | #define elf_backend_check_relocs elf32_arm_check_relocs | |
dc810e39 | 6355 | #define elf_backend_relocate_section elf32_arm_relocate_section |
e489d0ae | 6356 | #define elf_backend_write_section elf32_arm_write_section |
252b5132 | 6357 | #define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol |
5e681ec4 | 6358 | #define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections |
252b5132 RH |
6359 | #define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol |
6360 | #define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections | |
e489d0ae | 6361 | #define elf_backend_link_output_symbol_hook elf32_arm_output_symbol_hook |
252b5132 | 6362 | #define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections |
ba96a88f | 6363 | #define elf_backend_post_process_headers elf32_arm_post_process_headers |
99e4ae17 | 6364 | #define elf_backend_reloc_type_class elf32_arm_reloc_type_class |
c178919b | 6365 | #define elf_backend_object_p elf32_arm_object_p |
e16bb312 | 6366 | #define elf_backend_section_flags elf32_arm_section_flags |
40a18ebd NC |
6367 | #define elf_backend_fake_sections elf32_arm_fake_sections |
6368 | #define elf_backend_section_from_shdr elf32_arm_section_from_shdr | |
e16bb312 | 6369 | #define elf_backend_final_write_processing elf32_arm_final_write_processing |
5e681ec4 | 6370 | #define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol |
b7693d02 | 6371 | #define elf_backend_symbol_processing elf32_arm_symbol_processing |
0beaef2b | 6372 | #define elf_backend_size_info elf32_arm_size_info |
b294bdf8 MM |
6373 | #define elf_backend_modify_segment_map elf32_arm_modify_segment_map |
6374 | #define elf_backend_additional_program_headers \ | |
6375 | elf32_arm_additional_program_headers | |
252b5132 | 6376 | |
5e681ec4 | 6377 | #define elf_backend_can_refcount 1 |
252b5132 RH |
6378 | #define elf_backend_can_gc_sections 1 |
6379 | #define elf_backend_plt_readonly 1 | |
6380 | #define elf_backend_want_got_plt 1 | |
6381 | #define elf_backend_want_plt_sym 0 | |
4e7fd91e PB |
6382 | #define elf_backend_may_use_rel_p 1 |
6383 | #define elf_backend_may_use_rela_p 0 | |
6384 | #define elf_backend_default_use_rela_p 0 | |
6385 | #define elf_backend_rela_normal 0 | |
252b5132 | 6386 | |
04f7c78d | 6387 | #define elf_backend_got_header_size 12 |
04f7c78d | 6388 | |
252b5132 | 6389 | #include "elf32-target.h" |
7f266840 | 6390 | |
4e7fd91e PB |
6391 | /* VxWorks Targets */ |
6392 | ||
6393 | #undef TARGET_LITTLE_SYM | |
6394 | #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec | |
6395 | #undef TARGET_LITTLE_NAME | |
6396 | #define TARGET_LITTLE_NAME "elf32-littlearm-vxworks" | |
6397 | #undef TARGET_BIG_SYM | |
6398 | #define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec | |
6399 | #undef TARGET_BIG_NAME | |
6400 | #define TARGET_BIG_NAME "elf32-bigarm-vxworks" | |
6401 | ||
6402 | /* Like elf32_arm_link_hash_table_create -- but overrides | |
6403 | appropriately for VxWorks. */ | |
6404 | static struct bfd_link_hash_table * | |
6405 | elf32_arm_vxworks_link_hash_table_create (bfd *abfd) | |
6406 | { | |
6407 | struct bfd_link_hash_table *ret; | |
6408 | ||
6409 | ret = elf32_arm_link_hash_table_create (abfd); | |
6410 | if (ret) | |
6411 | { | |
6412 | struct elf32_arm_link_hash_table *htab | |
6413 | = (struct elf32_arm_link_hash_table *)ret; | |
6414 | htab->use_rel = 0; | |
6415 | } | |
6416 | return ret; | |
6417 | } | |
6418 | ||
6419 | #undef elf32_bed | |
6420 | #define elf32_bed elf32_arm_vxworks_bed | |
6421 | ||
6422 | #undef bfd_elf32_bfd_link_hash_table_create | |
6423 | #define bfd_elf32_bfd_link_hash_table_create \ | |
6424 | elf32_arm_vxworks_link_hash_table_create | |
6425 | ||
6426 | #undef elf_backend_may_use_rel_p | |
6427 | #define elf_backend_may_use_rel_p 0 | |
6428 | #undef elf_backend_may_use_rela_p | |
6429 | #define elf_backend_may_use_rela_p 1 | |
6430 | #undef elf_backend_default_use_rela_p | |
6431 | #define elf_backend_default_use_rela_p 1 | |
6432 | #undef elf_backend_rela_normal | |
6433 | #define elf_backend_rela_normal 1 | |
6434 | ||
6435 | #include "elf32-target.h" | |
6436 | ||
6437 | ||
7f266840 DJ |
6438 | /* Symbian OS Targets */ |
6439 | ||
6440 | #undef TARGET_LITTLE_SYM | |
6441 | #define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec | |
6442 | #undef TARGET_LITTLE_NAME | |
6443 | #define TARGET_LITTLE_NAME "elf32-littlearm-symbian" | |
6444 | #undef TARGET_BIG_SYM | |
6445 | #define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec | |
6446 | #undef TARGET_BIG_NAME | |
6447 | #define TARGET_BIG_NAME "elf32-bigarm-symbian" | |
6448 | ||
6449 | /* Like elf32_arm_link_hash_table_create -- but overrides | |
6450 | appropriately for Symbian OS. */ | |
6451 | static struct bfd_link_hash_table * | |
6452 | elf32_arm_symbian_link_hash_table_create (bfd *abfd) | |
6453 | { | |
6454 | struct bfd_link_hash_table *ret; | |
6455 | ||
6456 | ret = elf32_arm_link_hash_table_create (abfd); | |
6457 | if (ret) | |
6458 | { | |
6459 | struct elf32_arm_link_hash_table *htab | |
6460 | = (struct elf32_arm_link_hash_table *)ret; | |
6461 | /* There is no PLT header for Symbian OS. */ | |
6462 | htab->plt_header_size = 0; | |
6463 | /* The PLT entries are each three instructions. */ | |
6464 | htab->plt_entry_size = 4 * NUM_ELEM (elf32_arm_symbian_plt_entry); | |
6465 | htab->symbian_p = 1; | |
67687978 | 6466 | htab->root.is_relocatable_executable = 1; |
7f266840 DJ |
6467 | } |
6468 | return ret; | |
6469 | } | |
6470 | ||
7f266840 DJ |
6471 | static struct bfd_elf_special_section const |
6472 | elf32_arm_symbian_special_sections[]= | |
6473 | { | |
5cd3778d MM |
6474 | /* In a BPABI executable, the dynamic linking sections do not go in |
6475 | the loadable read-only segment. The post-linker may wish to | |
6476 | refer to these sections, but they are not part of the final | |
6477 | program image. */ | |
7f266840 DJ |
6478 | { ".dynamic", 8, 0, SHT_DYNAMIC, 0 }, |
6479 | { ".dynstr", 7, 0, SHT_STRTAB, 0 }, | |
6480 | { ".dynsym", 7, 0, SHT_DYNSYM, 0 }, | |
6481 | { ".got", 4, 0, SHT_PROGBITS, 0 }, | |
6482 | { ".hash", 5, 0, SHT_HASH, 0 }, | |
5cd3778d MM |
6483 | /* These sections do not need to be writable as the SymbianOS |
6484 | postlinker will arrange things so that no dynamic relocation is | |
6485 | required. */ | |
6486 | { ".init_array", 11, 0, SHT_INIT_ARRAY, SHF_ALLOC }, | |
6487 | { ".fini_array", 11, 0, SHT_FINI_ARRAY, SHF_ALLOC }, | |
6488 | { ".preinit_array", 14, 0, SHT_PREINIT_ARRAY, SHF_ALLOC }, | |
7f266840 DJ |
6489 | { NULL, 0, 0, 0, 0 } |
6490 | }; | |
6491 | ||
c3c76620 | 6492 | static void |
b34af79c MM |
6493 | elf32_arm_symbian_begin_write_processing (bfd *abfd, |
6494 | struct bfd_link_info *link_info | |
6495 | ATTRIBUTE_UNUSED) | |
c3c76620 MM |
6496 | { |
6497 | /* BPABI objects are never loaded directly by an OS kernel; they are | |
6498 | processed by a postlinker first, into an OS-specific format. If | |
6499 | the D_PAGED bit is set on the file, BFD will align segments on | |
6500 | page boundaries, so that an OS can directly map the file. With | |
6501 | BPABI objects, that just results in wasted space. In addition, | |
6502 | because we clear the D_PAGED bit, map_sections_to_segments will | |
6503 | recognize that the program headers should not be mapped into any | |
6504 | loadable segment. */ | |
6505 | abfd->flags &= ~D_PAGED; | |
6506 | } | |
7f266840 DJ |
6507 | |
6508 | static bfd_boolean | |
b34af79c | 6509 | elf32_arm_symbian_modify_segment_map (bfd *abfd, |
b294bdf8 | 6510 | struct bfd_link_info *info) |
7f266840 DJ |
6511 | { |
6512 | struct elf_segment_map *m; | |
6513 | asection *dynsec; | |
6514 | ||
7f266840 DJ |
6515 | /* BPABI shared libraries and executables should have a PT_DYNAMIC |
6516 | segment. However, because the .dynamic section is not marked | |
6517 | with SEC_LOAD, the generic ELF code will not create such a | |
6518 | segment. */ | |
6519 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); | |
6520 | if (dynsec) | |
6521 | { | |
6522 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); | |
6523 | m->next = elf_tdata (abfd)->segment_map; | |
6524 | elf_tdata (abfd)->segment_map = m; | |
6525 | } | |
6526 | ||
b294bdf8 MM |
6527 | /* Also call the generic arm routine. */ |
6528 | return elf32_arm_modify_segment_map (abfd, info); | |
7f266840 DJ |
6529 | } |
6530 | ||
6531 | #undef elf32_bed | |
6532 | #define elf32_bed elf32_arm_symbian_bed | |
6533 | ||
6534 | /* The dynamic sections are not allocated on SymbianOS; the postlinker | |
6535 | will process them and then discard them. */ | |
6536 | #undef ELF_DYNAMIC_SEC_FLAGS | |
6537 | #define ELF_DYNAMIC_SEC_FLAGS \ | |
6538 | (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED) | |
6539 | ||
6540 | #undef bfd_elf32_bfd_link_hash_table_create | |
6541 | #define bfd_elf32_bfd_link_hash_table_create \ | |
6542 | elf32_arm_symbian_link_hash_table_create | |
6543 | ||
6544 | #undef elf_backend_special_sections | |
6545 | #define elf_backend_special_sections elf32_arm_symbian_special_sections | |
6546 | ||
c3c76620 MM |
6547 | #undef elf_backend_begin_write_processing |
6548 | #define elf_backend_begin_write_processing \ | |
6549 | elf32_arm_symbian_begin_write_processing | |
6550 | ||
7f266840 DJ |
6551 | #undef elf_backend_modify_segment_map |
6552 | #define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map | |
6553 | ||
6554 | /* There is no .got section for BPABI objects, and hence no header. */ | |
6555 | #undef elf_backend_got_header_size | |
6556 | #define elf_backend_got_header_size 0 | |
6557 | ||
6558 | /* Similarly, there is no .got.plt section. */ | |
6559 | #undef elf_backend_want_got_plt | |
6560 | #define elf_backend_want_got_plt 0 | |
6561 | ||
4e7fd91e PB |
6562 | #undef elf_backend_may_use_rel_p |
6563 | #define elf_backend_may_use_rel_p 1 | |
6564 | #undef elf_backend_may_use_rela_p | |
6565 | #define elf_backend_may_use_rela_p 0 | |
6566 | #undef elf_backend_default_use_rela_p | |
dc4c9c19 | 6567 | #define elf_backend_default_use_rela_p 0 |
4e7fd91e PB |
6568 | #undef elf_backend_rela_normal |
6569 | #define elf_backend_rela_normal 0 | |
6570 | ||
7f266840 | 6571 | #include "elf32-target.h" |