Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* 32-bit ELF support for ARM |
d7f735da | 2 | Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 |
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 | |
3e110533 | 19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
252b5132 | 20 | |
7f266840 DJ |
21 | #include "bfd.h" |
22 | #include "sysdep.h" | |
00a97672 | 23 | #include "libiberty.h" |
7f266840 DJ |
24 | #include "libbfd.h" |
25 | #include "elf-bfd.h" | |
00a97672 | 26 | #include "elf-vxworks.h" |
ee065d83 | 27 | #include "elf/arm.h" |
7f266840 DJ |
28 | |
29 | #ifndef NUM_ELEM | |
30 | #define NUM_ELEM(a) (sizeof (a) / (sizeof (a)[0])) | |
31 | #endif | |
32 | ||
00a97672 RS |
33 | /* Return the relocation section associated with NAME. HTAB is the |
34 | bfd's elf32_arm_link_hash_entry. */ | |
35 | #define RELOC_SECTION(HTAB, NAME) \ | |
36 | ((HTAB)->use_rel ? ".rel" NAME : ".rela" NAME) | |
37 | ||
38 | /* Return size of a relocation entry. HTAB is the bfd's | |
39 | elf32_arm_link_hash_entry. */ | |
40 | #define RELOC_SIZE(HTAB) \ | |
41 | ((HTAB)->use_rel \ | |
42 | ? sizeof (Elf32_External_Rel) \ | |
43 | : sizeof (Elf32_External_Rela)) | |
44 | ||
45 | /* Return function to swap relocations in. HTAB is the bfd's | |
46 | elf32_arm_link_hash_entry. */ | |
47 | #define SWAP_RELOC_IN(HTAB) \ | |
48 | ((HTAB)->use_rel \ | |
49 | ? bfd_elf32_swap_reloc_in \ | |
50 | : bfd_elf32_swap_reloca_in) | |
51 | ||
52 | /* Return function to swap relocations out. HTAB is the bfd's | |
53 | elf32_arm_link_hash_entry. */ | |
54 | #define SWAP_RELOC_OUT(HTAB) \ | |
55 | ((HTAB)->use_rel \ | |
56 | ? bfd_elf32_swap_reloc_out \ | |
57 | : bfd_elf32_swap_reloca_out) | |
58 | ||
7f266840 DJ |
59 | #define elf_info_to_howto 0 |
60 | #define elf_info_to_howto_rel elf32_arm_info_to_howto | |
61 | ||
62 | #define ARM_ELF_ABI_VERSION 0 | |
63 | #define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM | |
64 | ||
00a97672 RS |
65 | static const struct elf_backend_data elf32_arm_vxworks_bed; |
66 | ||
7f266840 DJ |
67 | /* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g. |
68 | R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO | |
69 | in that slot. */ | |
70 | ||
c19d1205 | 71 | static reloc_howto_type elf32_arm_howto_table_1[] = |
7f266840 DJ |
72 | { |
73 | /* No relocation */ | |
74 | HOWTO (R_ARM_NONE, /* type */ | |
75 | 0, /* rightshift */ | |
76 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
77 | 0, /* bitsize */ | |
78 | FALSE, /* pc_relative */ | |
79 | 0, /* bitpos */ | |
80 | complain_overflow_dont,/* complain_on_overflow */ | |
81 | bfd_elf_generic_reloc, /* special_function */ | |
82 | "R_ARM_NONE", /* name */ | |
83 | FALSE, /* partial_inplace */ | |
84 | 0, /* src_mask */ | |
85 | 0, /* dst_mask */ | |
86 | FALSE), /* pcrel_offset */ | |
87 | ||
88 | HOWTO (R_ARM_PC24, /* type */ | |
89 | 2, /* rightshift */ | |
90 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
91 | 24, /* bitsize */ | |
92 | TRUE, /* pc_relative */ | |
93 | 0, /* bitpos */ | |
94 | complain_overflow_signed,/* complain_on_overflow */ | |
95 | bfd_elf_generic_reloc, /* special_function */ | |
96 | "R_ARM_PC24", /* name */ | |
97 | FALSE, /* partial_inplace */ | |
98 | 0x00ffffff, /* src_mask */ | |
99 | 0x00ffffff, /* dst_mask */ | |
100 | TRUE), /* pcrel_offset */ | |
101 | ||
102 | /* 32 bit absolute */ | |
103 | HOWTO (R_ARM_ABS32, /* type */ | |
104 | 0, /* rightshift */ | |
105 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
106 | 32, /* bitsize */ | |
107 | FALSE, /* pc_relative */ | |
108 | 0, /* bitpos */ | |
109 | complain_overflow_bitfield,/* complain_on_overflow */ | |
110 | bfd_elf_generic_reloc, /* special_function */ | |
111 | "R_ARM_ABS32", /* name */ | |
112 | FALSE, /* partial_inplace */ | |
113 | 0xffffffff, /* src_mask */ | |
114 | 0xffffffff, /* dst_mask */ | |
115 | FALSE), /* pcrel_offset */ | |
116 | ||
117 | /* standard 32bit pc-relative reloc */ | |
118 | HOWTO (R_ARM_REL32, /* type */ | |
119 | 0, /* rightshift */ | |
120 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
121 | 32, /* bitsize */ | |
122 | TRUE, /* pc_relative */ | |
123 | 0, /* bitpos */ | |
124 | complain_overflow_bitfield,/* complain_on_overflow */ | |
125 | bfd_elf_generic_reloc, /* special_function */ | |
126 | "R_ARM_REL32", /* name */ | |
127 | FALSE, /* partial_inplace */ | |
128 | 0xffffffff, /* src_mask */ | |
129 | 0xffffffff, /* dst_mask */ | |
130 | TRUE), /* pcrel_offset */ | |
131 | ||
c19d1205 | 132 | /* 8 bit absolute - R_ARM_LDR_PC_G0 in AAELF */ |
7f266840 DJ |
133 | HOWTO (R_ARM_PC13, /* type */ |
134 | 0, /* rightshift */ | |
135 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
136 | 8, /* bitsize */ | |
137 | FALSE, /* pc_relative */ | |
138 | 0, /* bitpos */ | |
139 | complain_overflow_bitfield,/* complain_on_overflow */ | |
140 | bfd_elf_generic_reloc, /* special_function */ | |
141 | "R_ARM_PC13", /* name */ | |
142 | FALSE, /* partial_inplace */ | |
143 | 0x000000ff, /* src_mask */ | |
144 | 0x000000ff, /* dst_mask */ | |
145 | FALSE), /* pcrel_offset */ | |
146 | ||
147 | /* 16 bit absolute */ | |
148 | HOWTO (R_ARM_ABS16, /* type */ | |
149 | 0, /* rightshift */ | |
150 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
151 | 16, /* bitsize */ | |
152 | FALSE, /* pc_relative */ | |
153 | 0, /* bitpos */ | |
154 | complain_overflow_bitfield,/* complain_on_overflow */ | |
155 | bfd_elf_generic_reloc, /* special_function */ | |
156 | "R_ARM_ABS16", /* name */ | |
157 | FALSE, /* partial_inplace */ | |
158 | 0x0000ffff, /* src_mask */ | |
159 | 0x0000ffff, /* dst_mask */ | |
160 | FALSE), /* pcrel_offset */ | |
161 | ||
162 | /* 12 bit absolute */ | |
163 | HOWTO (R_ARM_ABS12, /* type */ | |
164 | 0, /* rightshift */ | |
165 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
166 | 12, /* bitsize */ | |
167 | FALSE, /* pc_relative */ | |
168 | 0, /* bitpos */ | |
169 | complain_overflow_bitfield,/* complain_on_overflow */ | |
170 | bfd_elf_generic_reloc, /* special_function */ | |
171 | "R_ARM_ABS12", /* name */ | |
172 | FALSE, /* partial_inplace */ | |
00a97672 RS |
173 | 0x00000fff, /* src_mask */ |
174 | 0x00000fff, /* dst_mask */ | |
7f266840 DJ |
175 | FALSE), /* pcrel_offset */ |
176 | ||
177 | HOWTO (R_ARM_THM_ABS5, /* type */ | |
178 | 6, /* rightshift */ | |
179 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
180 | 5, /* bitsize */ | |
181 | FALSE, /* pc_relative */ | |
182 | 0, /* bitpos */ | |
183 | complain_overflow_bitfield,/* complain_on_overflow */ | |
184 | bfd_elf_generic_reloc, /* special_function */ | |
185 | "R_ARM_THM_ABS5", /* name */ | |
186 | FALSE, /* partial_inplace */ | |
187 | 0x000007e0, /* src_mask */ | |
188 | 0x000007e0, /* dst_mask */ | |
189 | FALSE), /* pcrel_offset */ | |
190 | ||
191 | /* 8 bit absolute */ | |
192 | HOWTO (R_ARM_ABS8, /* type */ | |
193 | 0, /* rightshift */ | |
194 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
195 | 8, /* bitsize */ | |
196 | FALSE, /* pc_relative */ | |
197 | 0, /* bitpos */ | |
198 | complain_overflow_bitfield,/* complain_on_overflow */ | |
199 | bfd_elf_generic_reloc, /* special_function */ | |
200 | "R_ARM_ABS8", /* name */ | |
201 | FALSE, /* partial_inplace */ | |
202 | 0x000000ff, /* src_mask */ | |
203 | 0x000000ff, /* dst_mask */ | |
204 | FALSE), /* pcrel_offset */ | |
205 | ||
206 | HOWTO (R_ARM_SBREL32, /* type */ | |
207 | 0, /* rightshift */ | |
208 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
209 | 32, /* bitsize */ | |
210 | FALSE, /* pc_relative */ | |
211 | 0, /* bitpos */ | |
212 | complain_overflow_dont,/* complain_on_overflow */ | |
213 | bfd_elf_generic_reloc, /* special_function */ | |
214 | "R_ARM_SBREL32", /* name */ | |
215 | FALSE, /* partial_inplace */ | |
216 | 0xffffffff, /* src_mask */ | |
217 | 0xffffffff, /* dst_mask */ | |
218 | FALSE), /* pcrel_offset */ | |
219 | ||
c19d1205 ZW |
220 | /* FIXME: Has two more bits of offset in Thumb32. */ |
221 | HOWTO (R_ARM_THM_CALL, /* type */ | |
7f266840 DJ |
222 | 1, /* rightshift */ |
223 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
224 | 23, /* bitsize */ | |
225 | TRUE, /* pc_relative */ | |
226 | 0, /* bitpos */ | |
227 | complain_overflow_signed,/* complain_on_overflow */ | |
228 | bfd_elf_generic_reloc, /* special_function */ | |
c19d1205 | 229 | "R_ARM_THM_CALL", /* name */ |
7f266840 DJ |
230 | FALSE, /* partial_inplace */ |
231 | 0x07ff07ff, /* src_mask */ | |
232 | 0x07ff07ff, /* dst_mask */ | |
233 | TRUE), /* pcrel_offset */ | |
234 | ||
235 | HOWTO (R_ARM_THM_PC8, /* type */ | |
236 | 1, /* rightshift */ | |
237 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
238 | 8, /* bitsize */ | |
239 | TRUE, /* pc_relative */ | |
240 | 0, /* bitpos */ | |
241 | complain_overflow_signed,/* complain_on_overflow */ | |
242 | bfd_elf_generic_reloc, /* special_function */ | |
243 | "R_ARM_THM_PC8", /* name */ | |
244 | FALSE, /* partial_inplace */ | |
245 | 0x000000ff, /* src_mask */ | |
246 | 0x000000ff, /* dst_mask */ | |
247 | TRUE), /* pcrel_offset */ | |
248 | ||
c19d1205 | 249 | HOWTO (R_ARM_BREL_ADJ, /* type */ |
7f266840 DJ |
250 | 1, /* rightshift */ |
251 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
c19d1205 ZW |
252 | 32, /* bitsize */ |
253 | FALSE, /* pc_relative */ | |
7f266840 DJ |
254 | 0, /* bitpos */ |
255 | complain_overflow_signed,/* complain_on_overflow */ | |
256 | bfd_elf_generic_reloc, /* special_function */ | |
c19d1205 | 257 | "R_ARM_BREL_ADJ", /* name */ |
7f266840 | 258 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
259 | 0xffffffff, /* src_mask */ |
260 | 0xffffffff, /* dst_mask */ | |
261 | FALSE), /* pcrel_offset */ | |
7f266840 DJ |
262 | |
263 | HOWTO (R_ARM_SWI24, /* type */ | |
264 | 0, /* rightshift */ | |
265 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
266 | 0, /* bitsize */ | |
267 | FALSE, /* pc_relative */ | |
268 | 0, /* bitpos */ | |
269 | complain_overflow_signed,/* complain_on_overflow */ | |
270 | bfd_elf_generic_reloc, /* special_function */ | |
271 | "R_ARM_SWI24", /* name */ | |
272 | FALSE, /* partial_inplace */ | |
273 | 0x00000000, /* src_mask */ | |
274 | 0x00000000, /* dst_mask */ | |
275 | FALSE), /* pcrel_offset */ | |
276 | ||
277 | HOWTO (R_ARM_THM_SWI8, /* type */ | |
278 | 0, /* rightshift */ | |
279 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
280 | 0, /* bitsize */ | |
281 | FALSE, /* pc_relative */ | |
282 | 0, /* bitpos */ | |
283 | complain_overflow_signed,/* complain_on_overflow */ | |
284 | bfd_elf_generic_reloc, /* special_function */ | |
285 | "R_ARM_SWI8", /* name */ | |
286 | FALSE, /* partial_inplace */ | |
287 | 0x00000000, /* src_mask */ | |
288 | 0x00000000, /* dst_mask */ | |
289 | FALSE), /* pcrel_offset */ | |
290 | ||
291 | /* BLX instruction for the ARM. */ | |
292 | HOWTO (R_ARM_XPC25, /* type */ | |
293 | 2, /* rightshift */ | |
294 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
295 | 25, /* bitsize */ | |
296 | TRUE, /* pc_relative */ | |
297 | 0, /* bitpos */ | |
298 | complain_overflow_signed,/* complain_on_overflow */ | |
299 | bfd_elf_generic_reloc, /* special_function */ | |
300 | "R_ARM_XPC25", /* name */ | |
301 | FALSE, /* partial_inplace */ | |
302 | 0x00ffffff, /* src_mask */ | |
303 | 0x00ffffff, /* dst_mask */ | |
304 | TRUE), /* pcrel_offset */ | |
305 | ||
306 | /* BLX instruction for the Thumb. */ | |
307 | HOWTO (R_ARM_THM_XPC22, /* type */ | |
308 | 2, /* rightshift */ | |
309 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
310 | 22, /* bitsize */ | |
311 | TRUE, /* pc_relative */ | |
312 | 0, /* bitpos */ | |
313 | complain_overflow_signed,/* complain_on_overflow */ | |
314 | bfd_elf_generic_reloc, /* special_function */ | |
315 | "R_ARM_THM_XPC22", /* name */ | |
316 | FALSE, /* partial_inplace */ | |
317 | 0x07ff07ff, /* src_mask */ | |
318 | 0x07ff07ff, /* dst_mask */ | |
319 | TRUE), /* pcrel_offset */ | |
320 | ||
ba93b8ac | 321 | /* Dynamic TLS relocations. */ |
7f266840 | 322 | |
ba93b8ac DJ |
323 | HOWTO (R_ARM_TLS_DTPMOD32, /* type */ |
324 | 0, /* rightshift */ | |
325 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
326 | 32, /* bitsize */ | |
327 | FALSE, /* pc_relative */ | |
328 | 0, /* bitpos */ | |
329 | complain_overflow_bitfield,/* complain_on_overflow */ | |
330 | bfd_elf_generic_reloc, /* special_function */ | |
331 | "R_ARM_TLS_DTPMOD32", /* name */ | |
332 | TRUE, /* partial_inplace */ | |
333 | 0xffffffff, /* src_mask */ | |
334 | 0xffffffff, /* dst_mask */ | |
335 | FALSE), /* pcrel_offset */ | |
7f266840 | 336 | |
ba93b8ac DJ |
337 | HOWTO (R_ARM_TLS_DTPOFF32, /* type */ |
338 | 0, /* rightshift */ | |
339 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
340 | 32, /* bitsize */ | |
341 | FALSE, /* pc_relative */ | |
342 | 0, /* bitpos */ | |
343 | complain_overflow_bitfield,/* complain_on_overflow */ | |
344 | bfd_elf_generic_reloc, /* special_function */ | |
345 | "R_ARM_TLS_DTPOFF32", /* name */ | |
346 | TRUE, /* partial_inplace */ | |
347 | 0xffffffff, /* src_mask */ | |
348 | 0xffffffff, /* dst_mask */ | |
349 | FALSE), /* pcrel_offset */ | |
7f266840 | 350 | |
ba93b8ac DJ |
351 | HOWTO (R_ARM_TLS_TPOFF32, /* type */ |
352 | 0, /* rightshift */ | |
353 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
354 | 32, /* bitsize */ | |
355 | FALSE, /* pc_relative */ | |
356 | 0, /* bitpos */ | |
357 | complain_overflow_bitfield,/* complain_on_overflow */ | |
358 | bfd_elf_generic_reloc, /* special_function */ | |
359 | "R_ARM_TLS_TPOFF32", /* name */ | |
360 | TRUE, /* partial_inplace */ | |
361 | 0xffffffff, /* src_mask */ | |
362 | 0xffffffff, /* dst_mask */ | |
363 | FALSE), /* pcrel_offset */ | |
7f266840 DJ |
364 | |
365 | /* Relocs used in ARM Linux */ | |
366 | ||
367 | HOWTO (R_ARM_COPY, /* type */ | |
368 | 0, /* rightshift */ | |
369 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
370 | 32, /* bitsize */ | |
371 | FALSE, /* pc_relative */ | |
372 | 0, /* bitpos */ | |
373 | complain_overflow_bitfield,/* complain_on_overflow */ | |
374 | bfd_elf_generic_reloc, /* special_function */ | |
375 | "R_ARM_COPY", /* name */ | |
376 | TRUE, /* partial_inplace */ | |
377 | 0xffffffff, /* src_mask */ | |
378 | 0xffffffff, /* dst_mask */ | |
379 | FALSE), /* pcrel_offset */ | |
380 | ||
381 | HOWTO (R_ARM_GLOB_DAT, /* type */ | |
382 | 0, /* rightshift */ | |
383 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
384 | 32, /* bitsize */ | |
385 | FALSE, /* pc_relative */ | |
386 | 0, /* bitpos */ | |
387 | complain_overflow_bitfield,/* complain_on_overflow */ | |
388 | bfd_elf_generic_reloc, /* special_function */ | |
389 | "R_ARM_GLOB_DAT", /* name */ | |
390 | TRUE, /* partial_inplace */ | |
391 | 0xffffffff, /* src_mask */ | |
392 | 0xffffffff, /* dst_mask */ | |
393 | FALSE), /* pcrel_offset */ | |
394 | ||
395 | HOWTO (R_ARM_JUMP_SLOT, /* type */ | |
396 | 0, /* rightshift */ | |
397 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
398 | 32, /* bitsize */ | |
399 | FALSE, /* pc_relative */ | |
400 | 0, /* bitpos */ | |
401 | complain_overflow_bitfield,/* complain_on_overflow */ | |
402 | bfd_elf_generic_reloc, /* special_function */ | |
403 | "R_ARM_JUMP_SLOT", /* name */ | |
404 | TRUE, /* partial_inplace */ | |
405 | 0xffffffff, /* src_mask */ | |
406 | 0xffffffff, /* dst_mask */ | |
407 | FALSE), /* pcrel_offset */ | |
408 | ||
409 | HOWTO (R_ARM_RELATIVE, /* type */ | |
410 | 0, /* rightshift */ | |
411 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
412 | 32, /* bitsize */ | |
413 | FALSE, /* pc_relative */ | |
414 | 0, /* bitpos */ | |
415 | complain_overflow_bitfield,/* complain_on_overflow */ | |
416 | bfd_elf_generic_reloc, /* special_function */ | |
417 | "R_ARM_RELATIVE", /* name */ | |
418 | TRUE, /* partial_inplace */ | |
419 | 0xffffffff, /* src_mask */ | |
420 | 0xffffffff, /* dst_mask */ | |
421 | FALSE), /* pcrel_offset */ | |
422 | ||
c19d1205 | 423 | HOWTO (R_ARM_GOTOFF32, /* type */ |
7f266840 DJ |
424 | 0, /* rightshift */ |
425 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
426 | 32, /* bitsize */ | |
427 | FALSE, /* pc_relative */ | |
428 | 0, /* bitpos */ | |
429 | complain_overflow_bitfield,/* complain_on_overflow */ | |
430 | bfd_elf_generic_reloc, /* special_function */ | |
c19d1205 | 431 | "R_ARM_GOTOFF32", /* name */ |
7f266840 DJ |
432 | TRUE, /* partial_inplace */ |
433 | 0xffffffff, /* src_mask */ | |
434 | 0xffffffff, /* dst_mask */ | |
435 | FALSE), /* pcrel_offset */ | |
436 | ||
437 | HOWTO (R_ARM_GOTPC, /* type */ | |
438 | 0, /* rightshift */ | |
439 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
440 | 32, /* bitsize */ | |
441 | TRUE, /* pc_relative */ | |
442 | 0, /* bitpos */ | |
443 | complain_overflow_bitfield,/* complain_on_overflow */ | |
444 | bfd_elf_generic_reloc, /* special_function */ | |
445 | "R_ARM_GOTPC", /* name */ | |
446 | TRUE, /* partial_inplace */ | |
447 | 0xffffffff, /* src_mask */ | |
448 | 0xffffffff, /* dst_mask */ | |
449 | TRUE), /* pcrel_offset */ | |
450 | ||
451 | HOWTO (R_ARM_GOT32, /* type */ | |
452 | 0, /* rightshift */ | |
453 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
454 | 32, /* bitsize */ | |
455 | FALSE, /* pc_relative */ | |
456 | 0, /* bitpos */ | |
457 | complain_overflow_bitfield,/* complain_on_overflow */ | |
458 | bfd_elf_generic_reloc, /* special_function */ | |
459 | "R_ARM_GOT32", /* name */ | |
460 | TRUE, /* partial_inplace */ | |
461 | 0xffffffff, /* src_mask */ | |
462 | 0xffffffff, /* dst_mask */ | |
463 | FALSE), /* pcrel_offset */ | |
464 | ||
465 | HOWTO (R_ARM_PLT32, /* type */ | |
466 | 2, /* rightshift */ | |
467 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
ce490eda | 468 | 24, /* bitsize */ |
7f266840 DJ |
469 | TRUE, /* pc_relative */ |
470 | 0, /* bitpos */ | |
471 | complain_overflow_bitfield,/* complain_on_overflow */ | |
472 | bfd_elf_generic_reloc, /* special_function */ | |
473 | "R_ARM_PLT32", /* name */ | |
ce490eda | 474 | FALSE, /* partial_inplace */ |
7f266840 DJ |
475 | 0x00ffffff, /* src_mask */ |
476 | 0x00ffffff, /* dst_mask */ | |
477 | TRUE), /* pcrel_offset */ | |
478 | ||
479 | HOWTO (R_ARM_CALL, /* type */ | |
480 | 2, /* rightshift */ | |
481 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
482 | 24, /* bitsize */ | |
483 | TRUE, /* pc_relative */ | |
484 | 0, /* bitpos */ | |
485 | complain_overflow_signed,/* complain_on_overflow */ | |
486 | bfd_elf_generic_reloc, /* special_function */ | |
487 | "R_ARM_CALL", /* name */ | |
488 | FALSE, /* partial_inplace */ | |
489 | 0x00ffffff, /* src_mask */ | |
490 | 0x00ffffff, /* dst_mask */ | |
491 | TRUE), /* pcrel_offset */ | |
492 | ||
493 | HOWTO (R_ARM_JUMP24, /* type */ | |
494 | 2, /* rightshift */ | |
495 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
496 | 24, /* bitsize */ | |
497 | TRUE, /* pc_relative */ | |
498 | 0, /* bitpos */ | |
499 | complain_overflow_signed,/* complain_on_overflow */ | |
500 | bfd_elf_generic_reloc, /* special_function */ | |
501 | "R_ARM_JUMP24", /* name */ | |
502 | FALSE, /* partial_inplace */ | |
503 | 0x00ffffff, /* src_mask */ | |
504 | 0x00ffffff, /* dst_mask */ | |
505 | TRUE), /* pcrel_offset */ | |
506 | ||
c19d1205 ZW |
507 | HOWTO (R_ARM_THM_JUMP24, /* type */ |
508 | 1, /* rightshift */ | |
509 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
510 | 24, /* bitsize */ | |
511 | TRUE, /* pc_relative */ | |
7f266840 | 512 | 0, /* bitpos */ |
c19d1205 | 513 | complain_overflow_signed,/* complain_on_overflow */ |
7f266840 | 514 | bfd_elf_generic_reloc, /* special_function */ |
c19d1205 | 515 | "R_ARM_THM_JUMP24", /* name */ |
7f266840 | 516 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
517 | 0x07ff2fff, /* src_mask */ |
518 | 0x07ff2fff, /* dst_mask */ | |
519 | TRUE), /* pcrel_offset */ | |
7f266840 | 520 | |
c19d1205 | 521 | HOWTO (R_ARM_BASE_ABS, /* type */ |
7f266840 | 522 | 0, /* rightshift */ |
c19d1205 ZW |
523 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
524 | 32, /* bitsize */ | |
7f266840 DJ |
525 | FALSE, /* pc_relative */ |
526 | 0, /* bitpos */ | |
527 | complain_overflow_dont,/* complain_on_overflow */ | |
528 | bfd_elf_generic_reloc, /* special_function */ | |
c19d1205 | 529 | "R_ARM_BASE_ABS", /* name */ |
7f266840 | 530 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
531 | 0xffffffff, /* src_mask */ |
532 | 0xffffffff, /* dst_mask */ | |
7f266840 DJ |
533 | FALSE), /* pcrel_offset */ |
534 | ||
535 | HOWTO (R_ARM_ALU_PCREL7_0, /* type */ | |
536 | 0, /* rightshift */ | |
537 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
538 | 12, /* bitsize */ | |
539 | TRUE, /* pc_relative */ | |
540 | 0, /* bitpos */ | |
541 | complain_overflow_dont,/* complain_on_overflow */ | |
542 | bfd_elf_generic_reloc, /* special_function */ | |
543 | "R_ARM_ALU_PCREL_7_0", /* name */ | |
544 | FALSE, /* partial_inplace */ | |
545 | 0x00000fff, /* src_mask */ | |
546 | 0x00000fff, /* dst_mask */ | |
547 | TRUE), /* pcrel_offset */ | |
548 | ||
549 | HOWTO (R_ARM_ALU_PCREL15_8, /* type */ | |
550 | 0, /* rightshift */ | |
551 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
552 | 12, /* bitsize */ | |
553 | TRUE, /* pc_relative */ | |
554 | 8, /* bitpos */ | |
555 | complain_overflow_dont,/* complain_on_overflow */ | |
556 | bfd_elf_generic_reloc, /* special_function */ | |
557 | "R_ARM_ALU_PCREL_15_8",/* name */ | |
558 | FALSE, /* partial_inplace */ | |
559 | 0x00000fff, /* src_mask */ | |
560 | 0x00000fff, /* dst_mask */ | |
561 | TRUE), /* pcrel_offset */ | |
562 | ||
563 | HOWTO (R_ARM_ALU_PCREL23_15, /* type */ | |
564 | 0, /* rightshift */ | |
565 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
566 | 12, /* bitsize */ | |
567 | TRUE, /* pc_relative */ | |
568 | 16, /* bitpos */ | |
569 | complain_overflow_dont,/* complain_on_overflow */ | |
570 | bfd_elf_generic_reloc, /* special_function */ | |
571 | "R_ARM_ALU_PCREL_23_15",/* name */ | |
572 | FALSE, /* partial_inplace */ | |
573 | 0x00000fff, /* src_mask */ | |
574 | 0x00000fff, /* dst_mask */ | |
575 | TRUE), /* pcrel_offset */ | |
576 | ||
577 | HOWTO (R_ARM_LDR_SBREL_11_0, /* type */ | |
578 | 0, /* rightshift */ | |
579 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
580 | 12, /* bitsize */ | |
581 | FALSE, /* pc_relative */ | |
582 | 0, /* bitpos */ | |
583 | complain_overflow_dont,/* complain_on_overflow */ | |
584 | bfd_elf_generic_reloc, /* special_function */ | |
585 | "R_ARM_LDR_SBREL_11_0",/* name */ | |
586 | FALSE, /* partial_inplace */ | |
587 | 0x00000fff, /* src_mask */ | |
588 | 0x00000fff, /* dst_mask */ | |
589 | FALSE), /* pcrel_offset */ | |
590 | ||
591 | HOWTO (R_ARM_ALU_SBREL_19_12, /* type */ | |
592 | 0, /* rightshift */ | |
593 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
594 | 8, /* bitsize */ | |
595 | FALSE, /* pc_relative */ | |
596 | 12, /* bitpos */ | |
597 | complain_overflow_dont,/* complain_on_overflow */ | |
598 | bfd_elf_generic_reloc, /* special_function */ | |
599 | "R_ARM_ALU_SBREL_19_12",/* name */ | |
600 | FALSE, /* partial_inplace */ | |
601 | 0x000ff000, /* src_mask */ | |
602 | 0x000ff000, /* dst_mask */ | |
603 | FALSE), /* pcrel_offset */ | |
604 | ||
605 | HOWTO (R_ARM_ALU_SBREL_27_20, /* type */ | |
606 | 0, /* rightshift */ | |
607 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
608 | 8, /* bitsize */ | |
609 | FALSE, /* pc_relative */ | |
610 | 20, /* bitpos */ | |
611 | complain_overflow_dont,/* complain_on_overflow */ | |
612 | bfd_elf_generic_reloc, /* special_function */ | |
613 | "R_ARM_ALU_SBREL_27_20",/* name */ | |
614 | FALSE, /* partial_inplace */ | |
615 | 0x0ff00000, /* src_mask */ | |
616 | 0x0ff00000, /* dst_mask */ | |
617 | FALSE), /* pcrel_offset */ | |
618 | ||
619 | HOWTO (R_ARM_TARGET1, /* type */ | |
620 | 0, /* rightshift */ | |
621 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
622 | 32, /* bitsize */ | |
623 | FALSE, /* pc_relative */ | |
624 | 0, /* bitpos */ | |
625 | complain_overflow_dont,/* complain_on_overflow */ | |
626 | bfd_elf_generic_reloc, /* special_function */ | |
627 | "R_ARM_TARGET1", /* name */ | |
628 | FALSE, /* partial_inplace */ | |
629 | 0xffffffff, /* src_mask */ | |
630 | 0xffffffff, /* dst_mask */ | |
631 | FALSE), /* pcrel_offset */ | |
632 | ||
633 | HOWTO (R_ARM_ROSEGREL32, /* type */ | |
634 | 0, /* rightshift */ | |
635 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
636 | 32, /* bitsize */ | |
637 | FALSE, /* pc_relative */ | |
638 | 0, /* bitpos */ | |
639 | complain_overflow_dont,/* complain_on_overflow */ | |
640 | bfd_elf_generic_reloc, /* special_function */ | |
641 | "R_ARM_ROSEGREL32", /* name */ | |
642 | FALSE, /* partial_inplace */ | |
643 | 0xffffffff, /* src_mask */ | |
644 | 0xffffffff, /* dst_mask */ | |
645 | FALSE), /* pcrel_offset */ | |
646 | ||
647 | HOWTO (R_ARM_V4BX, /* type */ | |
648 | 0, /* rightshift */ | |
649 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
650 | 32, /* bitsize */ | |
651 | FALSE, /* pc_relative */ | |
652 | 0, /* bitpos */ | |
653 | complain_overflow_dont,/* complain_on_overflow */ | |
654 | bfd_elf_generic_reloc, /* special_function */ | |
655 | "R_ARM_V4BX", /* name */ | |
656 | FALSE, /* partial_inplace */ | |
657 | 0xffffffff, /* src_mask */ | |
658 | 0xffffffff, /* dst_mask */ | |
659 | FALSE), /* pcrel_offset */ | |
660 | ||
661 | HOWTO (R_ARM_TARGET2, /* type */ | |
662 | 0, /* rightshift */ | |
663 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
664 | 32, /* bitsize */ | |
665 | FALSE, /* pc_relative */ | |
666 | 0, /* bitpos */ | |
667 | complain_overflow_signed,/* complain_on_overflow */ | |
668 | bfd_elf_generic_reloc, /* special_function */ | |
669 | "R_ARM_TARGET2", /* name */ | |
670 | FALSE, /* partial_inplace */ | |
671 | 0xffffffff, /* src_mask */ | |
672 | 0xffffffff, /* dst_mask */ | |
673 | TRUE), /* pcrel_offset */ | |
674 | ||
675 | HOWTO (R_ARM_PREL31, /* type */ | |
676 | 0, /* rightshift */ | |
677 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
678 | 31, /* bitsize */ | |
679 | TRUE, /* pc_relative */ | |
680 | 0, /* bitpos */ | |
681 | complain_overflow_signed,/* complain_on_overflow */ | |
682 | bfd_elf_generic_reloc, /* special_function */ | |
683 | "R_ARM_PREL31", /* name */ | |
684 | FALSE, /* partial_inplace */ | |
685 | 0x7fffffff, /* src_mask */ | |
686 | 0x7fffffff, /* dst_mask */ | |
687 | TRUE), /* pcrel_offset */ | |
c19d1205 ZW |
688 | |
689 | HOWTO (R_ARM_MOVW_ABS_NC, /* type */ | |
690 | 0, /* rightshift */ | |
691 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
692 | 16, /* bitsize */ | |
693 | FALSE, /* pc_relative */ | |
694 | 0, /* bitpos */ | |
695 | complain_overflow_dont,/* complain_on_overflow */ | |
696 | bfd_elf_generic_reloc, /* special_function */ | |
697 | "R_ARM_MOVW_ABS_NC", /* name */ | |
698 | FALSE, /* partial_inplace */ | |
699 | 0x0000ffff, /* src_mask */ | |
700 | 0x0000ffff, /* dst_mask */ | |
701 | FALSE), /* pcrel_offset */ | |
702 | ||
703 | HOWTO (R_ARM_MOVT_ABS, /* type */ | |
704 | 0, /* rightshift */ | |
705 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
706 | 16, /* bitsize */ | |
707 | FALSE, /* pc_relative */ | |
708 | 0, /* bitpos */ | |
709 | complain_overflow_bitfield,/* complain_on_overflow */ | |
710 | bfd_elf_generic_reloc, /* special_function */ | |
711 | "R_ARM_MOVT_ABS", /* name */ | |
712 | FALSE, /* partial_inplace */ | |
713 | 0x0000ffff, /* src_mask */ | |
714 | 0x0000ffff, /* dst_mask */ | |
715 | FALSE), /* pcrel_offset */ | |
716 | ||
717 | HOWTO (R_ARM_MOVW_PREL_NC, /* type */ | |
718 | 0, /* rightshift */ | |
719 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
720 | 16, /* bitsize */ | |
721 | TRUE, /* pc_relative */ | |
722 | 0, /* bitpos */ | |
723 | complain_overflow_dont,/* complain_on_overflow */ | |
724 | bfd_elf_generic_reloc, /* special_function */ | |
725 | "R_ARM_MOVW_PREL_NC", /* name */ | |
726 | FALSE, /* partial_inplace */ | |
727 | 0x0000ffff, /* src_mask */ | |
728 | 0x0000ffff, /* dst_mask */ | |
729 | TRUE), /* pcrel_offset */ | |
730 | ||
731 | HOWTO (R_ARM_MOVT_PREL, /* type */ | |
732 | 0, /* rightshift */ | |
733 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
734 | 16, /* bitsize */ | |
735 | TRUE, /* pc_relative */ | |
736 | 0, /* bitpos */ | |
737 | complain_overflow_bitfield,/* complain_on_overflow */ | |
738 | bfd_elf_generic_reloc, /* special_function */ | |
739 | "R_ARM_MOVT_PREL", /* name */ | |
740 | FALSE, /* partial_inplace */ | |
741 | 0x0000ffff, /* src_mask */ | |
742 | 0x0000ffff, /* dst_mask */ | |
743 | TRUE), /* pcrel_offset */ | |
744 | ||
745 | HOWTO (R_ARM_THM_MOVW_ABS_NC, /* type */ | |
746 | 0, /* rightshift */ | |
747 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
748 | 16, /* bitsize */ | |
749 | FALSE, /* pc_relative */ | |
750 | 0, /* bitpos */ | |
751 | complain_overflow_dont,/* complain_on_overflow */ | |
752 | bfd_elf_generic_reloc, /* special_function */ | |
753 | "R_ARM_THM_MOVW_ABS_NC",/* name */ | |
754 | FALSE, /* partial_inplace */ | |
755 | 0x040f70ff, /* src_mask */ | |
756 | 0x040f70ff, /* dst_mask */ | |
757 | FALSE), /* pcrel_offset */ | |
758 | ||
759 | HOWTO (R_ARM_THM_MOVT_ABS, /* type */ | |
760 | 0, /* rightshift */ | |
761 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
762 | 16, /* bitsize */ | |
763 | FALSE, /* pc_relative */ | |
764 | 0, /* bitpos */ | |
765 | complain_overflow_bitfield,/* complain_on_overflow */ | |
766 | bfd_elf_generic_reloc, /* special_function */ | |
767 | "R_ARM_THM_MOVT_ABS", /* name */ | |
768 | FALSE, /* partial_inplace */ | |
769 | 0x040f70ff, /* src_mask */ | |
770 | 0x040f70ff, /* dst_mask */ | |
771 | FALSE), /* pcrel_offset */ | |
772 | ||
773 | HOWTO (R_ARM_THM_MOVW_PREL_NC,/* type */ | |
774 | 0, /* rightshift */ | |
775 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
776 | 16, /* bitsize */ | |
777 | TRUE, /* pc_relative */ | |
778 | 0, /* bitpos */ | |
779 | complain_overflow_dont,/* complain_on_overflow */ | |
780 | bfd_elf_generic_reloc, /* special_function */ | |
781 | "R_ARM_THM_MOVW_PREL_NC",/* name */ | |
782 | FALSE, /* partial_inplace */ | |
783 | 0x040f70ff, /* src_mask */ | |
784 | 0x040f70ff, /* dst_mask */ | |
785 | TRUE), /* pcrel_offset */ | |
786 | ||
787 | HOWTO (R_ARM_THM_MOVT_PREL, /* type */ | |
788 | 0, /* rightshift */ | |
789 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
790 | 16, /* bitsize */ | |
791 | TRUE, /* pc_relative */ | |
792 | 0, /* bitpos */ | |
793 | complain_overflow_bitfield,/* complain_on_overflow */ | |
794 | bfd_elf_generic_reloc, /* special_function */ | |
795 | "R_ARM_THM_MOVT_PREL", /* name */ | |
796 | FALSE, /* partial_inplace */ | |
797 | 0x040f70ff, /* src_mask */ | |
798 | 0x040f70ff, /* dst_mask */ | |
799 | TRUE), /* pcrel_offset */ | |
800 | ||
801 | HOWTO (R_ARM_THM_JUMP19, /* type */ | |
802 | 1, /* rightshift */ | |
803 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
804 | 19, /* bitsize */ | |
805 | TRUE, /* pc_relative */ | |
806 | 0, /* bitpos */ | |
807 | complain_overflow_signed,/* complain_on_overflow */ | |
808 | bfd_elf_generic_reloc, /* special_function */ | |
809 | "R_ARM_THM_JUMP19", /* name */ | |
810 | FALSE, /* partial_inplace */ | |
811 | 0x043f2fff, /* src_mask */ | |
812 | 0x043f2fff, /* dst_mask */ | |
813 | TRUE), /* pcrel_offset */ | |
814 | ||
815 | HOWTO (R_ARM_THM_JUMP6, /* type */ | |
816 | 1, /* rightshift */ | |
817 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
818 | 6, /* bitsize */ | |
819 | TRUE, /* pc_relative */ | |
820 | 0, /* bitpos */ | |
821 | complain_overflow_unsigned,/* complain_on_overflow */ | |
822 | bfd_elf_generic_reloc, /* special_function */ | |
823 | "R_ARM_THM_JUMP6", /* name */ | |
824 | FALSE, /* partial_inplace */ | |
825 | 0x02f8, /* src_mask */ | |
826 | 0x02f8, /* dst_mask */ | |
827 | TRUE), /* pcrel_offset */ | |
828 | ||
829 | /* These are declared as 13-bit signed relocations because we can | |
830 | address -4095 .. 4095(base) by altering ADDW to SUBW or vice | |
831 | versa. */ | |
832 | HOWTO (R_ARM_THM_ALU_PREL_11_0,/* type */ | |
833 | 0, /* rightshift */ | |
834 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
835 | 13, /* bitsize */ | |
836 | TRUE, /* pc_relative */ | |
837 | 0, /* bitpos */ | |
838 | complain_overflow_signed,/* complain_on_overflow */ | |
839 | bfd_elf_generic_reloc, /* special_function */ | |
840 | "R_ARM_THM_ALU_PREL_11_0",/* name */ | |
841 | FALSE, /* partial_inplace */ | |
842 | 0x040070ff, /* src_mask */ | |
843 | 0x040070ff, /* dst_mask */ | |
844 | TRUE), /* pcrel_offset */ | |
845 | ||
846 | HOWTO (R_ARM_THM_PC12, /* type */ | |
847 | 0, /* rightshift */ | |
848 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
849 | 13, /* bitsize */ | |
850 | TRUE, /* pc_relative */ | |
851 | 0, /* bitpos */ | |
852 | complain_overflow_signed,/* complain_on_overflow */ | |
853 | bfd_elf_generic_reloc, /* special_function */ | |
854 | "R_ARM_THM_PC12", /* name */ | |
855 | FALSE, /* partial_inplace */ | |
856 | 0x040070ff, /* src_mask */ | |
857 | 0x040070ff, /* dst_mask */ | |
858 | TRUE), /* pcrel_offset */ | |
859 | ||
860 | HOWTO (R_ARM_ABS32_NOI, /* type */ | |
861 | 0, /* rightshift */ | |
862 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
863 | 32, /* bitsize */ | |
864 | FALSE, /* pc_relative */ | |
865 | 0, /* bitpos */ | |
866 | complain_overflow_dont,/* complain_on_overflow */ | |
867 | bfd_elf_generic_reloc, /* special_function */ | |
868 | "R_ARM_ABS32_NOI", /* name */ | |
869 | FALSE, /* partial_inplace */ | |
870 | 0xffffffff, /* src_mask */ | |
871 | 0xffffffff, /* dst_mask */ | |
872 | FALSE), /* pcrel_offset */ | |
873 | ||
874 | HOWTO (R_ARM_REL32_NOI, /* type */ | |
875 | 0, /* rightshift */ | |
876 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
877 | 32, /* bitsize */ | |
878 | TRUE, /* pc_relative */ | |
879 | 0, /* bitpos */ | |
880 | complain_overflow_dont,/* complain_on_overflow */ | |
881 | bfd_elf_generic_reloc, /* special_function */ | |
882 | "R_ARM_REL32_NOI", /* name */ | |
883 | FALSE, /* partial_inplace */ | |
884 | 0xffffffff, /* src_mask */ | |
885 | 0xffffffff, /* dst_mask */ | |
886 | FALSE), /* pcrel_offset */ | |
7f266840 DJ |
887 | }; |
888 | ||
c19d1205 ZW |
889 | /* Relocations 57 .. 83 are the "group relocations" which we do not |
890 | support. */ | |
891 | ||
892 | static reloc_howto_type elf32_arm_howto_table_2[] = | |
893 | { | |
894 | HOWTO (R_ARM_MOVW_BREL_NC, /* type */ | |
895 | 0, /* rightshift */ | |
896 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
897 | 16, /* bitsize */ | |
898 | FALSE, /* pc_relative */ | |
899 | 0, /* bitpos */ | |
900 | complain_overflow_dont,/* complain_on_overflow */ | |
901 | bfd_elf_generic_reloc, /* special_function */ | |
902 | "R_ARM_MOVW_BREL_NC", /* name */ | |
903 | FALSE, /* partial_inplace */ | |
904 | 0x0000ffff, /* src_mask */ | |
905 | 0x0000ffff, /* dst_mask */ | |
906 | FALSE), /* pcrel_offset */ | |
907 | ||
908 | HOWTO (R_ARM_MOVT_BREL, /* type */ | |
909 | 0, /* rightshift */ | |
910 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
911 | 16, /* bitsize */ | |
912 | FALSE, /* pc_relative */ | |
913 | 0, /* bitpos */ | |
914 | complain_overflow_bitfield,/* complain_on_overflow */ | |
915 | bfd_elf_generic_reloc, /* special_function */ | |
916 | "R_ARM_MOVT_BREL", /* name */ | |
917 | FALSE, /* partial_inplace */ | |
918 | 0x0000ffff, /* src_mask */ | |
919 | 0x0000ffff, /* dst_mask */ | |
920 | FALSE), /* pcrel_offset */ | |
921 | ||
922 | HOWTO (R_ARM_MOVW_BREL, /* type */ | |
923 | 0, /* rightshift */ | |
924 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
925 | 16, /* bitsize */ | |
926 | FALSE, /* pc_relative */ | |
927 | 0, /* bitpos */ | |
928 | complain_overflow_dont,/* complain_on_overflow */ | |
929 | bfd_elf_generic_reloc, /* special_function */ | |
930 | "R_ARM_MOVW_BREL", /* name */ | |
931 | FALSE, /* partial_inplace */ | |
932 | 0x0000ffff, /* src_mask */ | |
933 | 0x0000ffff, /* dst_mask */ | |
934 | FALSE), /* pcrel_offset */ | |
935 | ||
936 | HOWTO (R_ARM_THM_MOVW_BREL_NC,/* type */ | |
937 | 0, /* rightshift */ | |
938 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
939 | 16, /* bitsize */ | |
940 | FALSE, /* pc_relative */ | |
941 | 0, /* bitpos */ | |
942 | complain_overflow_dont,/* complain_on_overflow */ | |
943 | bfd_elf_generic_reloc, /* special_function */ | |
944 | "R_ARM_THM_MOVW_BREL_NC",/* name */ | |
945 | FALSE, /* partial_inplace */ | |
946 | 0x040f70ff, /* src_mask */ | |
947 | 0x040f70ff, /* dst_mask */ | |
948 | FALSE), /* pcrel_offset */ | |
949 | ||
950 | HOWTO (R_ARM_THM_MOVT_BREL, /* type */ | |
951 | 0, /* rightshift */ | |
952 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
953 | 16, /* bitsize */ | |
954 | FALSE, /* pc_relative */ | |
955 | 0, /* bitpos */ | |
956 | complain_overflow_bitfield,/* complain_on_overflow */ | |
957 | bfd_elf_generic_reloc, /* special_function */ | |
958 | "R_ARM_THM_MOVT_BREL", /* name */ | |
959 | FALSE, /* partial_inplace */ | |
960 | 0x040f70ff, /* src_mask */ | |
961 | 0x040f70ff, /* dst_mask */ | |
962 | FALSE), /* pcrel_offset */ | |
963 | ||
964 | HOWTO (R_ARM_THM_MOVW_BREL, /* type */ | |
965 | 0, /* rightshift */ | |
966 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
967 | 16, /* bitsize */ | |
968 | FALSE, /* pc_relative */ | |
969 | 0, /* bitpos */ | |
970 | complain_overflow_dont,/* complain_on_overflow */ | |
971 | bfd_elf_generic_reloc, /* special_function */ | |
972 | "R_ARM_THM_MOVW_BREL", /* name */ | |
973 | FALSE, /* partial_inplace */ | |
974 | 0x040f70ff, /* src_mask */ | |
975 | 0x040f70ff, /* dst_mask */ | |
976 | FALSE), /* pcrel_offset */ | |
977 | ||
978 | EMPTY_HOWTO (90), /* unallocated */ | |
979 | EMPTY_HOWTO (91), | |
980 | EMPTY_HOWTO (92), | |
981 | EMPTY_HOWTO (93), | |
982 | ||
983 | HOWTO (R_ARM_PLT32_ABS, /* type */ | |
984 | 0, /* rightshift */ | |
985 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
986 | 32, /* bitsize */ | |
987 | FALSE, /* pc_relative */ | |
988 | 0, /* bitpos */ | |
989 | complain_overflow_dont,/* complain_on_overflow */ | |
990 | bfd_elf_generic_reloc, /* special_function */ | |
991 | "R_ARM_PLT32_ABS", /* name */ | |
992 | FALSE, /* partial_inplace */ | |
993 | 0xffffffff, /* src_mask */ | |
994 | 0xffffffff, /* dst_mask */ | |
995 | FALSE), /* pcrel_offset */ | |
996 | ||
997 | HOWTO (R_ARM_GOT_ABS, /* type */ | |
998 | 0, /* rightshift */ | |
999 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1000 | 32, /* bitsize */ | |
1001 | FALSE, /* pc_relative */ | |
1002 | 0, /* bitpos */ | |
1003 | complain_overflow_dont,/* complain_on_overflow */ | |
1004 | bfd_elf_generic_reloc, /* special_function */ | |
1005 | "R_ARM_GOT_ABS", /* name */ | |
1006 | FALSE, /* partial_inplace */ | |
1007 | 0xffffffff, /* src_mask */ | |
1008 | 0xffffffff, /* dst_mask */ | |
1009 | FALSE), /* pcrel_offset */ | |
1010 | ||
1011 | HOWTO (R_ARM_GOT_PREL, /* type */ | |
1012 | 0, /* rightshift */ | |
1013 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1014 | 32, /* bitsize */ | |
1015 | TRUE, /* pc_relative */ | |
1016 | 0, /* bitpos */ | |
1017 | complain_overflow_dont, /* complain_on_overflow */ | |
1018 | bfd_elf_generic_reloc, /* special_function */ | |
1019 | "R_ARM_GOT_PREL", /* name */ | |
1020 | FALSE, /* partial_inplace */ | |
1021 | 0xffffffff, /* src_mask */ | |
1022 | 0xffffffff, /* dst_mask */ | |
1023 | TRUE), /* pcrel_offset */ | |
1024 | ||
1025 | HOWTO (R_ARM_GOT_BREL12, /* type */ | |
1026 | 0, /* rightshift */ | |
1027 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1028 | 12, /* bitsize */ | |
1029 | FALSE, /* pc_relative */ | |
1030 | 0, /* bitpos */ | |
1031 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1032 | bfd_elf_generic_reloc, /* special_function */ | |
1033 | "R_ARM_GOT_BREL12", /* name */ | |
1034 | FALSE, /* partial_inplace */ | |
1035 | 0x00000fff, /* src_mask */ | |
1036 | 0x00000fff, /* dst_mask */ | |
1037 | FALSE), /* pcrel_offset */ | |
1038 | ||
1039 | HOWTO (R_ARM_GOTOFF12, /* type */ | |
1040 | 0, /* rightshift */ | |
1041 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1042 | 12, /* bitsize */ | |
1043 | FALSE, /* pc_relative */ | |
1044 | 0, /* bitpos */ | |
1045 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1046 | bfd_elf_generic_reloc, /* special_function */ | |
1047 | "R_ARM_GOTOFF12", /* name */ | |
1048 | FALSE, /* partial_inplace */ | |
1049 | 0x00000fff, /* src_mask */ | |
1050 | 0x00000fff, /* dst_mask */ | |
1051 | FALSE), /* pcrel_offset */ | |
1052 | ||
1053 | EMPTY_HOWTO (R_ARM_GOTRELAX), /* reserved for future GOT-load optimizations */ | |
1054 | ||
1055 | /* GNU extension to record C++ vtable member usage */ | |
1056 | HOWTO (R_ARM_GNU_VTENTRY, /* type */ | |
ba93b8ac DJ |
1057 | 0, /* rightshift */ |
1058 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c19d1205 | 1059 | 0, /* bitsize */ |
ba93b8ac DJ |
1060 | FALSE, /* pc_relative */ |
1061 | 0, /* bitpos */ | |
c19d1205 ZW |
1062 | complain_overflow_dont, /* complain_on_overflow */ |
1063 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
1064 | "R_ARM_GNU_VTENTRY", /* name */ | |
1065 | FALSE, /* partial_inplace */ | |
1066 | 0, /* src_mask */ | |
1067 | 0, /* dst_mask */ | |
1068 | FALSE), /* pcrel_offset */ | |
1069 | ||
1070 | /* GNU extension to record C++ vtable hierarchy */ | |
1071 | HOWTO (R_ARM_GNU_VTINHERIT, /* type */ | |
1072 | 0, /* rightshift */ | |
1073 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1074 | 0, /* bitsize */ | |
1075 | FALSE, /* pc_relative */ | |
1076 | 0, /* bitpos */ | |
1077 | complain_overflow_dont, /* complain_on_overflow */ | |
1078 | NULL, /* special_function */ | |
1079 | "R_ARM_GNU_VTINHERIT", /* name */ | |
1080 | FALSE, /* partial_inplace */ | |
1081 | 0, /* src_mask */ | |
1082 | 0, /* dst_mask */ | |
1083 | FALSE), /* pcrel_offset */ | |
1084 | ||
1085 | HOWTO (R_ARM_THM_JUMP11, /* type */ | |
1086 | 1, /* rightshift */ | |
1087 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1088 | 11, /* bitsize */ | |
1089 | TRUE, /* pc_relative */ | |
1090 | 0, /* bitpos */ | |
1091 | complain_overflow_signed, /* complain_on_overflow */ | |
1092 | bfd_elf_generic_reloc, /* special_function */ | |
1093 | "R_ARM_THM_JUMP11", /* name */ | |
1094 | FALSE, /* partial_inplace */ | |
1095 | 0x000007ff, /* src_mask */ | |
1096 | 0x000007ff, /* dst_mask */ | |
1097 | TRUE), /* pcrel_offset */ | |
1098 | ||
1099 | HOWTO (R_ARM_THM_JUMP8, /* type */ | |
1100 | 1, /* rightshift */ | |
1101 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1102 | 8, /* bitsize */ | |
1103 | TRUE, /* pc_relative */ | |
1104 | 0, /* bitpos */ | |
1105 | complain_overflow_signed, /* complain_on_overflow */ | |
1106 | bfd_elf_generic_reloc, /* special_function */ | |
1107 | "R_ARM_THM_JUMP8", /* name */ | |
1108 | FALSE, /* partial_inplace */ | |
1109 | 0x000000ff, /* src_mask */ | |
1110 | 0x000000ff, /* dst_mask */ | |
1111 | TRUE), /* pcrel_offset */ | |
ba93b8ac | 1112 | |
c19d1205 ZW |
1113 | /* TLS relocations */ |
1114 | HOWTO (R_ARM_TLS_GD32, /* type */ | |
ba93b8ac DJ |
1115 | 0, /* rightshift */ |
1116 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1117 | 32, /* bitsize */ | |
1118 | FALSE, /* pc_relative */ | |
1119 | 0, /* bitpos */ | |
1120 | complain_overflow_bitfield,/* complain_on_overflow */ | |
c19d1205 ZW |
1121 | NULL, /* special_function */ |
1122 | "R_ARM_TLS_GD32", /* name */ | |
ba93b8ac DJ |
1123 | TRUE, /* partial_inplace */ |
1124 | 0xffffffff, /* src_mask */ | |
1125 | 0xffffffff, /* dst_mask */ | |
c19d1205 | 1126 | FALSE), /* pcrel_offset */ |
ba93b8ac | 1127 | |
ba93b8ac DJ |
1128 | HOWTO (R_ARM_TLS_LDM32, /* type */ |
1129 | 0, /* rightshift */ | |
1130 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1131 | 32, /* bitsize */ | |
1132 | FALSE, /* pc_relative */ | |
1133 | 0, /* bitpos */ | |
1134 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1135 | bfd_elf_generic_reloc, /* special_function */ | |
1136 | "R_ARM_TLS_LDM32", /* name */ | |
1137 | TRUE, /* partial_inplace */ | |
1138 | 0xffffffff, /* src_mask */ | |
1139 | 0xffffffff, /* dst_mask */ | |
c19d1205 | 1140 | FALSE), /* pcrel_offset */ |
ba93b8ac | 1141 | |
c19d1205 | 1142 | HOWTO (R_ARM_TLS_LDO32, /* type */ |
ba93b8ac DJ |
1143 | 0, /* rightshift */ |
1144 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1145 | 32, /* bitsize */ | |
1146 | FALSE, /* pc_relative */ | |
1147 | 0, /* bitpos */ | |
1148 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1149 | bfd_elf_generic_reloc, /* special_function */ | |
c19d1205 | 1150 | "R_ARM_TLS_LDO32", /* name */ |
ba93b8ac DJ |
1151 | TRUE, /* partial_inplace */ |
1152 | 0xffffffff, /* src_mask */ | |
1153 | 0xffffffff, /* dst_mask */ | |
c19d1205 | 1154 | FALSE), /* pcrel_offset */ |
ba93b8ac | 1155 | |
ba93b8ac DJ |
1156 | HOWTO (R_ARM_TLS_IE32, /* type */ |
1157 | 0, /* rightshift */ | |
1158 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1159 | 32, /* bitsize */ | |
1160 | FALSE, /* pc_relative */ | |
1161 | 0, /* bitpos */ | |
1162 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1163 | NULL, /* special_function */ | |
1164 | "R_ARM_TLS_IE32", /* name */ | |
1165 | TRUE, /* partial_inplace */ | |
1166 | 0xffffffff, /* src_mask */ | |
1167 | 0xffffffff, /* dst_mask */ | |
c19d1205 | 1168 | FALSE), /* pcrel_offset */ |
7f266840 | 1169 | |
c19d1205 | 1170 | HOWTO (R_ARM_TLS_LE32, /* type */ |
7f266840 DJ |
1171 | 0, /* rightshift */ |
1172 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c19d1205 | 1173 | 32, /* bitsize */ |
7f266840 DJ |
1174 | FALSE, /* pc_relative */ |
1175 | 0, /* bitpos */ | |
c19d1205 ZW |
1176 | complain_overflow_bitfield,/* complain_on_overflow */ |
1177 | bfd_elf_generic_reloc, /* special_function */ | |
1178 | "R_ARM_TLS_LE32", /* name */ | |
1179 | TRUE, /* partial_inplace */ | |
1180 | 0xffffffff, /* src_mask */ | |
1181 | 0xffffffff, /* dst_mask */ | |
1182 | FALSE), /* pcrel_offset */ | |
7f266840 | 1183 | |
c19d1205 ZW |
1184 | HOWTO (R_ARM_TLS_LDO12, /* type */ |
1185 | 0, /* rightshift */ | |
1186 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1187 | 12, /* bitsize */ | |
1188 | FALSE, /* pc_relative */ | |
7f266840 | 1189 | 0, /* bitpos */ |
c19d1205 | 1190 | complain_overflow_bitfield,/* complain_on_overflow */ |
7f266840 | 1191 | bfd_elf_generic_reloc, /* special_function */ |
c19d1205 | 1192 | "R_ARM_TLS_LDO12", /* name */ |
7f266840 | 1193 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
1194 | 0x00000fff, /* src_mask */ |
1195 | 0x00000fff, /* dst_mask */ | |
1196 | FALSE), /* pcrel_offset */ | |
7f266840 | 1197 | |
c19d1205 ZW |
1198 | HOWTO (R_ARM_TLS_LE12, /* type */ |
1199 | 0, /* rightshift */ | |
1200 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1201 | 12, /* bitsize */ | |
1202 | FALSE, /* pc_relative */ | |
7f266840 | 1203 | 0, /* bitpos */ |
c19d1205 | 1204 | complain_overflow_bitfield,/* complain_on_overflow */ |
7f266840 | 1205 | bfd_elf_generic_reloc, /* special_function */ |
c19d1205 | 1206 | "R_ARM_TLS_LE12", /* name */ |
7f266840 | 1207 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
1208 | 0x00000fff, /* src_mask */ |
1209 | 0x00000fff, /* dst_mask */ | |
1210 | FALSE), /* pcrel_offset */ | |
7f266840 | 1211 | |
c19d1205 | 1212 | HOWTO (R_ARM_TLS_IE12GP, /* type */ |
7f266840 DJ |
1213 | 0, /* rightshift */ |
1214 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c19d1205 ZW |
1215 | 12, /* bitsize */ |
1216 | FALSE, /* pc_relative */ | |
7f266840 | 1217 | 0, /* bitpos */ |
c19d1205 | 1218 | complain_overflow_bitfield,/* complain_on_overflow */ |
7f266840 | 1219 | bfd_elf_generic_reloc, /* special_function */ |
c19d1205 | 1220 | "R_ARM_TLS_IE12GP", /* name */ |
7f266840 | 1221 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
1222 | 0x00000fff, /* src_mask */ |
1223 | 0x00000fff, /* dst_mask */ | |
1224 | FALSE), /* pcrel_offset */ | |
1225 | }; | |
1226 | ||
1227 | /* 112-127 private relocations | |
1228 | 128 R_ARM_ME_TOO, obsolete | |
1229 | 129-255 unallocated in AAELF. | |
7f266840 | 1230 | |
c19d1205 ZW |
1231 | 249-255 extended, currently unused, relocations: */ |
1232 | ||
1233 | static reloc_howto_type elf32_arm_howto_table_3[4] = | |
7f266840 DJ |
1234 | { |
1235 | HOWTO (R_ARM_RREL32, /* type */ | |
1236 | 0, /* rightshift */ | |
1237 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1238 | 0, /* bitsize */ | |
1239 | FALSE, /* pc_relative */ | |
1240 | 0, /* bitpos */ | |
1241 | complain_overflow_dont,/* complain_on_overflow */ | |
1242 | bfd_elf_generic_reloc, /* special_function */ | |
1243 | "R_ARM_RREL32", /* name */ | |
1244 | FALSE, /* partial_inplace */ | |
1245 | 0, /* src_mask */ | |
1246 | 0, /* dst_mask */ | |
1247 | FALSE), /* pcrel_offset */ | |
1248 | ||
1249 | HOWTO (R_ARM_RABS32, /* type */ | |
1250 | 0, /* rightshift */ | |
1251 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1252 | 0, /* bitsize */ | |
1253 | FALSE, /* pc_relative */ | |
1254 | 0, /* bitpos */ | |
1255 | complain_overflow_dont,/* complain_on_overflow */ | |
1256 | bfd_elf_generic_reloc, /* special_function */ | |
1257 | "R_ARM_RABS32", /* name */ | |
1258 | FALSE, /* partial_inplace */ | |
1259 | 0, /* src_mask */ | |
1260 | 0, /* dst_mask */ | |
1261 | FALSE), /* pcrel_offset */ | |
1262 | ||
1263 | HOWTO (R_ARM_RPC24, /* type */ | |
1264 | 0, /* rightshift */ | |
1265 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1266 | 0, /* bitsize */ | |
1267 | FALSE, /* pc_relative */ | |
1268 | 0, /* bitpos */ | |
1269 | complain_overflow_dont,/* complain_on_overflow */ | |
1270 | bfd_elf_generic_reloc, /* special_function */ | |
1271 | "R_ARM_RPC24", /* name */ | |
1272 | FALSE, /* partial_inplace */ | |
1273 | 0, /* src_mask */ | |
1274 | 0, /* dst_mask */ | |
1275 | FALSE), /* pcrel_offset */ | |
1276 | ||
1277 | HOWTO (R_ARM_RBASE, /* type */ | |
1278 | 0, /* rightshift */ | |
1279 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1280 | 0, /* bitsize */ | |
1281 | FALSE, /* pc_relative */ | |
1282 | 0, /* bitpos */ | |
1283 | complain_overflow_dont,/* complain_on_overflow */ | |
1284 | bfd_elf_generic_reloc, /* special_function */ | |
1285 | "R_ARM_RBASE", /* name */ | |
1286 | FALSE, /* partial_inplace */ | |
1287 | 0, /* src_mask */ | |
1288 | 0, /* dst_mask */ | |
1289 | FALSE) /* pcrel_offset */ | |
1290 | }; | |
1291 | ||
1292 | static reloc_howto_type * | |
1293 | elf32_arm_howto_from_type (unsigned int r_type) | |
1294 | { | |
c19d1205 ZW |
1295 | if (r_type < NUM_ELEM (elf32_arm_howto_table_1)) |
1296 | return &elf32_arm_howto_table_1[r_type]; | |
ba93b8ac | 1297 | |
c19d1205 ZW |
1298 | if (r_type >= R_ARM_MOVW_BREL_NC |
1299 | && r_type < R_ARM_MOVW_BREL_NC + NUM_ELEM (elf32_arm_howto_table_2)) | |
1300 | return &elf32_arm_howto_table_2[r_type - R_ARM_MOVW_BREL_NC]; | |
7f266840 | 1301 | |
c19d1205 ZW |
1302 | if (r_type >= R_ARM_RREL32 |
1303 | && r_type < R_ARM_RREL32 + NUM_ELEM (elf32_arm_howto_table_2)) | |
1304 | return &elf32_arm_howto_table_3[r_type - R_ARM_RREL32]; | |
7f266840 | 1305 | |
c19d1205 | 1306 | return NULL; |
7f266840 DJ |
1307 | } |
1308 | ||
1309 | static void | |
1310 | elf32_arm_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED, arelent * bfd_reloc, | |
1311 | Elf_Internal_Rela * elf_reloc) | |
1312 | { | |
1313 | unsigned int r_type; | |
1314 | ||
1315 | r_type = ELF32_R_TYPE (elf_reloc->r_info); | |
1316 | bfd_reloc->howto = elf32_arm_howto_from_type (r_type); | |
1317 | } | |
1318 | ||
1319 | struct elf32_arm_reloc_map | |
1320 | { | |
1321 | bfd_reloc_code_real_type bfd_reloc_val; | |
1322 | unsigned char elf_reloc_val; | |
1323 | }; | |
1324 | ||
1325 | /* All entries in this list must also be present in elf32_arm_howto_table. */ | |
1326 | static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] = | |
1327 | { | |
1328 | {BFD_RELOC_NONE, R_ARM_NONE}, | |
1329 | {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24}, | |
39b41c9c PB |
1330 | {BFD_RELOC_ARM_PCREL_CALL, R_ARM_CALL}, |
1331 | {BFD_RELOC_ARM_PCREL_JUMP, R_ARM_JUMP24}, | |
7f266840 DJ |
1332 | {BFD_RELOC_ARM_PCREL_BLX, R_ARM_XPC25}, |
1333 | {BFD_RELOC_THUMB_PCREL_BLX, R_ARM_THM_XPC22}, | |
1334 | {BFD_RELOC_32, R_ARM_ABS32}, | |
1335 | {BFD_RELOC_32_PCREL, R_ARM_REL32}, | |
1336 | {BFD_RELOC_8, R_ARM_ABS8}, | |
1337 | {BFD_RELOC_16, R_ARM_ABS16}, | |
1338 | {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12}, | |
1339 | {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5}, | |
c19d1205 ZW |
1340 | {BFD_RELOC_THUMB_PCREL_BRANCH25, R_ARM_THM_JUMP24}, |
1341 | {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_CALL}, | |
1342 | {BFD_RELOC_THUMB_PCREL_BRANCH12, R_ARM_THM_JUMP11}, | |
1343 | {BFD_RELOC_THUMB_PCREL_BRANCH20, R_ARM_THM_JUMP19}, | |
1344 | {BFD_RELOC_THUMB_PCREL_BRANCH9, R_ARM_THM_JUMP8}, | |
1345 | {BFD_RELOC_THUMB_PCREL_BRANCH7, R_ARM_THM_JUMP6}, | |
7f266840 DJ |
1346 | {BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT}, |
1347 | {BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT}, | |
1348 | {BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE}, | |
c19d1205 | 1349 | {BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF32}, |
7f266840 DJ |
1350 | {BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC}, |
1351 | {BFD_RELOC_ARM_GOT32, R_ARM_GOT32}, | |
1352 | {BFD_RELOC_ARM_PLT32, R_ARM_PLT32}, | |
1353 | {BFD_RELOC_ARM_TARGET1, R_ARM_TARGET1}, | |
1354 | {BFD_RELOC_ARM_ROSEGREL32, R_ARM_ROSEGREL32}, | |
1355 | {BFD_RELOC_ARM_SBREL32, R_ARM_SBREL32}, | |
1356 | {BFD_RELOC_ARM_PREL31, R_ARM_PREL31}, | |
ba93b8ac DJ |
1357 | {BFD_RELOC_ARM_TARGET2, R_ARM_TARGET2}, |
1358 | {BFD_RELOC_ARM_PLT32, R_ARM_PLT32}, | |
1359 | {BFD_RELOC_ARM_TLS_GD32, R_ARM_TLS_GD32}, | |
1360 | {BFD_RELOC_ARM_TLS_LDO32, R_ARM_TLS_LDO32}, | |
1361 | {BFD_RELOC_ARM_TLS_LDM32, R_ARM_TLS_LDM32}, | |
1362 | {BFD_RELOC_ARM_TLS_DTPMOD32, R_ARM_TLS_DTPMOD32}, | |
1363 | {BFD_RELOC_ARM_TLS_DTPOFF32, R_ARM_TLS_DTPOFF32}, | |
1364 | {BFD_RELOC_ARM_TLS_TPOFF32, R_ARM_TLS_TPOFF32}, | |
1365 | {BFD_RELOC_ARM_TLS_IE32, R_ARM_TLS_IE32}, | |
1366 | {BFD_RELOC_ARM_TLS_LE32, R_ARM_TLS_LE32}, | |
c19d1205 ZW |
1367 | {BFD_RELOC_VTABLE_INHERIT, R_ARM_GNU_VTINHERIT}, |
1368 | {BFD_RELOC_VTABLE_ENTRY, R_ARM_GNU_VTENTRY}, | |
7f266840 DJ |
1369 | }; |
1370 | ||
1371 | static reloc_howto_type * | |
f1c71a59 ZW |
1372 | elf32_arm_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
1373 | bfd_reloc_code_real_type code) | |
7f266840 DJ |
1374 | { |
1375 | unsigned int i; | |
c19d1205 ZW |
1376 | for (i = 0; i < NUM_ELEM (elf32_arm_reloc_map); i ++) |
1377 | if (elf32_arm_reloc_map[i].bfd_reloc_val == code) | |
1378 | return elf32_arm_howto_from_type (elf32_arm_reloc_map[i].elf_reloc_val); | |
7f266840 | 1379 | |
c19d1205 | 1380 | return NULL; |
7f266840 DJ |
1381 | } |
1382 | ||
1383 | /* Support for core dump NOTE sections */ | |
1384 | static bfd_boolean | |
f1c71a59 | 1385 | elf32_arm_nabi_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
7f266840 DJ |
1386 | { |
1387 | int offset; | |
1388 | size_t size; | |
1389 | ||
1390 | switch (note->descsz) | |
1391 | { | |
1392 | default: | |
1393 | return FALSE; | |
1394 | ||
1395 | case 148: /* Linux/ARM 32-bit*/ | |
1396 | /* pr_cursig */ | |
1397 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
1398 | ||
1399 | /* pr_pid */ | |
1400 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); | |
1401 | ||
1402 | /* pr_reg */ | |
1403 | offset = 72; | |
1404 | size = 72; | |
1405 | ||
1406 | break; | |
1407 | } | |
1408 | ||
1409 | /* Make a ".reg/999" section. */ | |
1410 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
1411 | size, note->descpos + offset); | |
1412 | } | |
1413 | ||
1414 | static bfd_boolean | |
f1c71a59 | 1415 | elf32_arm_nabi_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
7f266840 DJ |
1416 | { |
1417 | switch (note->descsz) | |
1418 | { | |
1419 | default: | |
1420 | return FALSE; | |
1421 | ||
1422 | case 124: /* Linux/ARM elf_prpsinfo */ | |
1423 | elf_tdata (abfd)->core_program | |
1424 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); | |
1425 | elf_tdata (abfd)->core_command | |
1426 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); | |
1427 | } | |
1428 | ||
1429 | /* Note that for some reason, a spurious space is tacked | |
1430 | onto the end of the args in some (at least one anyway) | |
1431 | implementations, so strip it off if it exists. */ | |
1432 | ||
1433 | { | |
1434 | char *command = elf_tdata (abfd)->core_command; | |
1435 | int n = strlen (command); | |
1436 | ||
1437 | if (0 < n && command[n - 1] == ' ') | |
1438 | command[n - 1] = '\0'; | |
1439 | } | |
1440 | ||
1441 | return TRUE; | |
1442 | } | |
1443 | ||
1444 | #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec | |
1445 | #define TARGET_LITTLE_NAME "elf32-littlearm" | |
1446 | #define TARGET_BIG_SYM bfd_elf32_bigarm_vec | |
1447 | #define TARGET_BIG_NAME "elf32-bigarm" | |
1448 | ||
1449 | #define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus | |
1450 | #define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo | |
1451 | ||
252b5132 RH |
1452 | typedef unsigned long int insn32; |
1453 | typedef unsigned short int insn16; | |
1454 | ||
8cb51566 | 1455 | /* In lieu of proper flags, assume all EABIv4 objects are interworkable. */ |
57e8b36a | 1456 | #define INTERWORK_FLAG(abfd) \ |
8cb51566 | 1457 | (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) == EF_ARM_EABI_VER4 \ |
85a84e7a | 1458 | || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK)) |
9b485d32 | 1459 | |
252b5132 RH |
1460 | /* The linker script knows the section names for placement. |
1461 | The entry_names are used to do simple name mangling on the stubs. | |
1462 | Given a function name, and its type, the stub can be found. The | |
9b485d32 | 1463 | name can be changed. The only requirement is the %s be present. */ |
252b5132 RH |
1464 | #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t" |
1465 | #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb" | |
1466 | ||
1467 | #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7" | |
1468 | #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm" | |
1469 | ||
1470 | /* The name of the dynamic interpreter. This is put in the .interp | |
1471 | section. */ | |
1472 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
1473 | ||
5e681ec4 PB |
1474 | #ifdef FOUR_WORD_PLT |
1475 | ||
252b5132 RH |
1476 | /* The first entry in a procedure linkage table looks like |
1477 | this. It is set up so that any shared library function that is | |
59f2c4e7 | 1478 | called before the relocation has been set up calls the dynamic |
9b485d32 | 1479 | linker first. */ |
e5a52504 | 1480 | static const bfd_vma elf32_arm_plt0_entry [] = |
5e681ec4 PB |
1481 | { |
1482 | 0xe52de004, /* str lr, [sp, #-4]! */ | |
1483 | 0xe59fe010, /* ldr lr, [pc, #16] */ | |
1484 | 0xe08fe00e, /* add lr, pc, lr */ | |
1485 | 0xe5bef008, /* ldr pc, [lr, #8]! */ | |
1486 | }; | |
1487 | ||
1488 | /* Subsequent entries in a procedure linkage table look like | |
1489 | this. */ | |
e5a52504 | 1490 | static const bfd_vma elf32_arm_plt_entry [] = |
5e681ec4 PB |
1491 | { |
1492 | 0xe28fc600, /* add ip, pc, #NN */ | |
1493 | 0xe28cca00, /* add ip, ip, #NN */ | |
1494 | 0xe5bcf000, /* ldr pc, [ip, #NN]! */ | |
1495 | 0x00000000, /* unused */ | |
1496 | }; | |
1497 | ||
1498 | #else | |
1499 | ||
5e681ec4 PB |
1500 | /* The first entry in a procedure linkage table looks like |
1501 | this. It is set up so that any shared library function that is | |
1502 | called before the relocation has been set up calls the dynamic | |
1503 | linker first. */ | |
e5a52504 | 1504 | static const bfd_vma elf32_arm_plt0_entry [] = |
917583ad | 1505 | { |
5e681ec4 PB |
1506 | 0xe52de004, /* str lr, [sp, #-4]! */ |
1507 | 0xe59fe004, /* ldr lr, [pc, #4] */ | |
1508 | 0xe08fe00e, /* add lr, pc, lr */ | |
1509 | 0xe5bef008, /* ldr pc, [lr, #8]! */ | |
1510 | 0x00000000, /* &GOT[0] - . */ | |
917583ad | 1511 | }; |
252b5132 RH |
1512 | |
1513 | /* Subsequent entries in a procedure linkage table look like | |
1514 | this. */ | |
e5a52504 | 1515 | static const bfd_vma elf32_arm_plt_entry [] = |
5e681ec4 PB |
1516 | { |
1517 | 0xe28fc600, /* add ip, pc, #0xNN00000 */ | |
1518 | 0xe28cca00, /* add ip, ip, #0xNN000 */ | |
1519 | 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */ | |
1520 | }; | |
1521 | ||
1522 | #endif | |
252b5132 | 1523 | |
00a97672 RS |
1524 | /* The format of the first entry in the procedure linkage table |
1525 | for a VxWorks executable. */ | |
1526 | static const bfd_vma elf32_arm_vxworks_exec_plt0_entry[] = | |
1527 | { | |
1528 | 0xe52dc008, /* str ip,[sp,#-8]! */ | |
1529 | 0xe59fc000, /* ldr ip,[pc] */ | |
1530 | 0xe59cf008, /* ldr pc,[ip,#8] */ | |
1531 | 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */ | |
1532 | }; | |
1533 | ||
1534 | /* The format of subsequent entries in a VxWorks executable. */ | |
1535 | static const bfd_vma elf32_arm_vxworks_exec_plt_entry[] = | |
1536 | { | |
1537 | 0xe59fc000, /* ldr ip,[pc] */ | |
1538 | 0xe59cf000, /* ldr pc,[ip] */ | |
1539 | 0x00000000, /* .long @got */ | |
1540 | 0xe59fc000, /* ldr ip,[pc] */ | |
1541 | 0xea000000, /* b _PLT */ | |
1542 | 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */ | |
1543 | }; | |
1544 | ||
1545 | /* The format of entries in a VxWorks shared library. */ | |
1546 | static const bfd_vma elf32_arm_vxworks_shared_plt_entry[] = | |
1547 | { | |
1548 | 0xe59fc000, /* ldr ip,[pc] */ | |
1549 | 0xe79cf009, /* ldr pc,[ip,r9] */ | |
1550 | 0x00000000, /* .long @got */ | |
1551 | 0xe59fc000, /* ldr ip,[pc] */ | |
1552 | 0xe599f008, /* ldr pc,[r9,#8] */ | |
1553 | 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */ | |
1554 | }; | |
1555 | ||
b7693d02 DJ |
1556 | /* An initial stub used if the PLT entry is referenced from Thumb code. */ |
1557 | #define PLT_THUMB_STUB_SIZE 4 | |
1558 | static const bfd_vma elf32_arm_plt_thumb_stub [] = | |
1559 | { | |
1560 | 0x4778, /* bx pc */ | |
1561 | 0x46c0 /* nop */ | |
1562 | }; | |
1563 | ||
e5a52504 MM |
1564 | /* The entries in a PLT when using a DLL-based target with multiple |
1565 | address spaces. */ | |
1566 | static const bfd_vma elf32_arm_symbian_plt_entry [] = | |
1567 | { | |
83a358aa | 1568 | 0xe51ff004, /* ldr pc, [pc, #-4] */ |
e5a52504 MM |
1569 | 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */ |
1570 | }; | |
1571 | ||
e489d0ae PB |
1572 | /* Used to build a map of a section. This is required for mixed-endian |
1573 | code/data. */ | |
1574 | ||
1575 | typedef struct elf32_elf_section_map | |
1576 | { | |
1577 | bfd_vma vma; | |
1578 | char type; | |
1579 | } | |
1580 | elf32_arm_section_map; | |
1581 | ||
8e3de13a | 1582 | typedef struct _arm_elf_section_data |
e489d0ae PB |
1583 | { |
1584 | struct bfd_elf_section_data elf; | |
8e3de13a | 1585 | unsigned int mapcount; |
e489d0ae | 1586 | elf32_arm_section_map *map; |
8e3de13a NC |
1587 | } |
1588 | _arm_elf_section_data; | |
e489d0ae PB |
1589 | |
1590 | #define elf32_arm_section_data(sec) \ | |
8e3de13a | 1591 | ((_arm_elf_section_data *) elf_section_data (sec)) |
e489d0ae | 1592 | |
ba93b8ac DJ |
1593 | /* The size of the thread control block. */ |
1594 | #define TCB_SIZE 8 | |
1595 | ||
ee065d83 PB |
1596 | #define NUM_KNOWN_ATTRIBUTES 32 |
1597 | ||
1598 | typedef struct aeabi_attribute | |
1599 | { | |
1600 | int type; | |
1601 | unsigned int i; | |
1602 | char *s; | |
1603 | } aeabi_attribute; | |
1604 | ||
1605 | typedef struct aeabi_attribute_list | |
1606 | { | |
1607 | struct aeabi_attribute_list *next; | |
1608 | int tag; | |
1609 | aeabi_attribute attr; | |
1610 | } aeabi_attribute_list; | |
1611 | ||
ba93b8ac DJ |
1612 | struct elf32_arm_obj_tdata |
1613 | { | |
1614 | struct elf_obj_tdata root; | |
1615 | ||
1616 | /* tls_type for each local got entry. */ | |
1617 | char *local_got_tls_type; | |
ee065d83 PB |
1618 | |
1619 | aeabi_attribute known_eabi_attributes[NUM_KNOWN_ATTRIBUTES]; | |
1620 | aeabi_attribute_list *other_eabi_attributes; | |
ba93b8ac DJ |
1621 | }; |
1622 | ||
1623 | #define elf32_arm_tdata(abfd) \ | |
1624 | ((struct elf32_arm_obj_tdata *) (abfd)->tdata.any) | |
1625 | ||
1626 | #define elf32_arm_local_got_tls_type(abfd) \ | |
1627 | (elf32_arm_tdata (abfd)->local_got_tls_type) | |
1628 | ||
1629 | static bfd_boolean | |
1630 | elf32_arm_mkobject (bfd *abfd) | |
1631 | { | |
1632 | bfd_size_type amt = sizeof (struct elf32_arm_obj_tdata); | |
1633 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
1634 | if (abfd->tdata.any == NULL) | |
1635 | return FALSE; | |
1636 | return TRUE; | |
1637 | } | |
1638 | ||
252b5132 RH |
1639 | /* The ARM linker needs to keep track of the number of relocs that it |
1640 | decides to copy in check_relocs for each symbol. This is so that | |
1641 | it can discard PC relative relocs if it doesn't need them when | |
1642 | linking with -Bsymbolic. We store the information in a field | |
1643 | extending the regular ELF linker hash table. */ | |
1644 | ||
ba93b8ac DJ |
1645 | /* This structure keeps track of the number of relocs we have copied |
1646 | for a given symbol. */ | |
5e681ec4 | 1647 | struct elf32_arm_relocs_copied |
917583ad NC |
1648 | { |
1649 | /* Next section. */ | |
5e681ec4 | 1650 | struct elf32_arm_relocs_copied * next; |
917583ad NC |
1651 | /* A section in dynobj. */ |
1652 | asection * section; | |
1653 | /* Number of relocs copied in this section. */ | |
1654 | bfd_size_type count; | |
ba93b8ac DJ |
1655 | /* Number of PC-relative relocs copied in this section. */ |
1656 | bfd_size_type pc_count; | |
917583ad | 1657 | }; |
252b5132 | 1658 | |
ba93b8ac DJ |
1659 | #define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent)) |
1660 | ||
ba96a88f | 1661 | /* Arm ELF linker hash entry. */ |
252b5132 | 1662 | struct elf32_arm_link_hash_entry |
917583ad NC |
1663 | { |
1664 | struct elf_link_hash_entry root; | |
252b5132 | 1665 | |
917583ad | 1666 | /* Number of PC relative relocs copied for this symbol. */ |
5e681ec4 | 1667 | struct elf32_arm_relocs_copied * relocs_copied; |
b7693d02 DJ |
1668 | |
1669 | /* We reference count Thumb references to a PLT entry separately, | |
1670 | so that we can emit the Thumb trampoline only if needed. */ | |
1671 | bfd_signed_vma plt_thumb_refcount; | |
1672 | ||
1673 | /* Since PLT entries have variable size if the Thumb prologue is | |
1674 | used, we need to record the index into .got.plt instead of | |
1675 | recomputing it from the PLT offset. */ | |
1676 | bfd_signed_vma plt_got_offset; | |
ba93b8ac DJ |
1677 | |
1678 | #define GOT_UNKNOWN 0 | |
1679 | #define GOT_NORMAL 1 | |
1680 | #define GOT_TLS_GD 2 | |
1681 | #define GOT_TLS_IE 4 | |
1682 | unsigned char tls_type; | |
917583ad | 1683 | }; |
252b5132 | 1684 | |
252b5132 | 1685 | /* Traverse an arm ELF linker hash table. */ |
252b5132 RH |
1686 | #define elf32_arm_link_hash_traverse(table, func, info) \ |
1687 | (elf_link_hash_traverse \ | |
1688 | (&(table)->root, \ | |
b7693d02 | 1689 | (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
252b5132 RH |
1690 | (info))) |
1691 | ||
1692 | /* Get the ARM elf linker hash table from a link_info structure. */ | |
1693 | #define elf32_arm_hash_table(info) \ | |
1694 | ((struct elf32_arm_link_hash_table *) ((info)->hash)) | |
1695 | ||
9b485d32 | 1696 | /* ARM ELF linker hash table. */ |
252b5132 | 1697 | struct elf32_arm_link_hash_table |
917583ad NC |
1698 | { |
1699 | /* The main hash table. */ | |
1700 | struct elf_link_hash_table root; | |
252b5132 | 1701 | |
4cc11e76 | 1702 | /* The size in bytes of the section containing the Thumb-to-ARM glue. */ |
dc810e39 | 1703 | bfd_size_type thumb_glue_size; |
252b5132 | 1704 | |
4cc11e76 | 1705 | /* The size in bytes of the section containing the ARM-to-Thumb glue. */ |
dc810e39 | 1706 | bfd_size_type arm_glue_size; |
252b5132 | 1707 | |
4cc11e76 | 1708 | /* An arbitrary input BFD chosen to hold the glue sections. */ |
917583ad | 1709 | bfd * bfd_of_glue_owner; |
ba96a88f | 1710 | |
e489d0ae PB |
1711 | /* Nonzero to output a BE8 image. */ |
1712 | int byteswap_code; | |
1713 | ||
9c504268 PB |
1714 | /* Zero if R_ARM_TARGET1 means R_ARM_ABS32. |
1715 | Nonzero if R_ARM_TARGET1 means R_ARM_ABS32. */ | |
1716 | int target1_is_rel; | |
1717 | ||
eb043451 PB |
1718 | /* The relocation to use for R_ARM_TARGET2 relocations. */ |
1719 | int target2_reloc; | |
1720 | ||
319850b4 JB |
1721 | /* Nonzero to fix BX instructions for ARMv4 targets. */ |
1722 | int fix_v4bx; | |
1723 | ||
33bfe774 JB |
1724 | /* Nonzero if the ARM/Thumb BLX instructions are available for use. */ |
1725 | int use_blx; | |
1726 | ||
e5a52504 MM |
1727 | /* The number of bytes in the initial entry in the PLT. */ |
1728 | bfd_size_type plt_header_size; | |
1729 | ||
1730 | /* The number of bytes in the subsequent PLT etries. */ | |
1731 | bfd_size_type plt_entry_size; | |
1732 | ||
00a97672 RS |
1733 | /* True if the target system is VxWorks. */ |
1734 | int vxworks_p; | |
1735 | ||
e5a52504 MM |
1736 | /* True if the target system is Symbian OS. */ |
1737 | int symbian_p; | |
1738 | ||
4e7fd91e PB |
1739 | /* True if the target uses REL relocations. */ |
1740 | int use_rel; | |
1741 | ||
5e681ec4 PB |
1742 | /* Short-cuts to get to dynamic linker sections. */ |
1743 | asection *sgot; | |
1744 | asection *sgotplt; | |
1745 | asection *srelgot; | |
1746 | asection *splt; | |
1747 | asection *srelplt; | |
1748 | asection *sdynbss; | |
1749 | asection *srelbss; | |
1750 | ||
00a97672 RS |
1751 | /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */ |
1752 | asection *srelplt2; | |
1753 | ||
ba93b8ac DJ |
1754 | /* Data for R_ARM_TLS_LDM32 relocations. */ |
1755 | union { | |
1756 | bfd_signed_vma refcount; | |
1757 | bfd_vma offset; | |
1758 | } tls_ldm_got; | |
1759 | ||
5e681ec4 PB |
1760 | /* Small local sym to section mapping cache. */ |
1761 | struct sym_sec_cache sym_sec; | |
b7693d02 DJ |
1762 | |
1763 | /* For convenience in allocate_dynrelocs. */ | |
1764 | bfd * obfd; | |
917583ad | 1765 | }; |
252b5132 | 1766 | |
780a67af NC |
1767 | /* Create an entry in an ARM ELF linker hash table. */ |
1768 | ||
1769 | static struct bfd_hash_entry * | |
57e8b36a NC |
1770 | elf32_arm_link_hash_newfunc (struct bfd_hash_entry * entry, |
1771 | struct bfd_hash_table * table, | |
1772 | const char * string) | |
780a67af NC |
1773 | { |
1774 | struct elf32_arm_link_hash_entry * ret = | |
1775 | (struct elf32_arm_link_hash_entry *) entry; | |
1776 | ||
1777 | /* Allocate the structure if it has not already been allocated by a | |
1778 | subclass. */ | |
1779 | if (ret == (struct elf32_arm_link_hash_entry *) NULL) | |
57e8b36a NC |
1780 | ret = bfd_hash_allocate (table, sizeof (struct elf32_arm_link_hash_entry)); |
1781 | if (ret == NULL) | |
780a67af NC |
1782 | return (struct bfd_hash_entry *) ret; |
1783 | ||
1784 | /* Call the allocation method of the superclass. */ | |
1785 | ret = ((struct elf32_arm_link_hash_entry *) | |
1786 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
1787 | table, string)); | |
57e8b36a | 1788 | if (ret != NULL) |
b7693d02 DJ |
1789 | { |
1790 | ret->relocs_copied = NULL; | |
ba93b8ac | 1791 | ret->tls_type = GOT_UNKNOWN; |
b7693d02 DJ |
1792 | ret->plt_thumb_refcount = 0; |
1793 | ret->plt_got_offset = -1; | |
1794 | } | |
780a67af NC |
1795 | |
1796 | return (struct bfd_hash_entry *) ret; | |
1797 | } | |
1798 | ||
00a97672 RS |
1799 | /* Return true if NAME is the name of the relocation section associated |
1800 | with S. */ | |
1801 | ||
1802 | static bfd_boolean | |
1803 | reloc_section_p (struct elf32_arm_link_hash_table *htab, | |
1804 | const char *name, asection *s) | |
1805 | { | |
1806 | if (htab->use_rel) | |
1807 | return strncmp (name, ".rel", 4) == 0 && strcmp (s->name, name + 4) == 0; | |
1808 | else | |
1809 | return strncmp (name, ".rela", 5) == 0 && strcmp (s->name, name + 5) == 0; | |
1810 | } | |
1811 | ||
1812 | /* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up | |
5e681ec4 PB |
1813 | shortcuts to them in our hash table. */ |
1814 | ||
1815 | static bfd_boolean | |
57e8b36a | 1816 | create_got_section (bfd *dynobj, struct bfd_link_info *info) |
5e681ec4 PB |
1817 | { |
1818 | struct elf32_arm_link_hash_table *htab; | |
1819 | ||
e5a52504 MM |
1820 | htab = elf32_arm_hash_table (info); |
1821 | /* BPABI objects never have a GOT, or associated sections. */ | |
1822 | if (htab->symbian_p) | |
1823 | return TRUE; | |
1824 | ||
5e681ec4 PB |
1825 | if (! _bfd_elf_create_got_section (dynobj, info)) |
1826 | return FALSE; | |
1827 | ||
5e681ec4 PB |
1828 | htab->sgot = bfd_get_section_by_name (dynobj, ".got"); |
1829 | htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1830 | if (!htab->sgot || !htab->sgotplt) | |
1831 | abort (); | |
1832 | ||
00a97672 RS |
1833 | htab->srelgot = bfd_make_section_with_flags (dynobj, |
1834 | RELOC_SECTION (htab, ".got"), | |
3496cb2a L |
1835 | (SEC_ALLOC | SEC_LOAD |
1836 | | SEC_HAS_CONTENTS | |
1837 | | SEC_IN_MEMORY | |
1838 | | SEC_LINKER_CREATED | |
1839 | | SEC_READONLY)); | |
5e681ec4 | 1840 | if (htab->srelgot == NULL |
5e681ec4 PB |
1841 | || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2)) |
1842 | return FALSE; | |
1843 | return TRUE; | |
1844 | } | |
1845 | ||
00a97672 RS |
1846 | /* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and |
1847 | .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our | |
5e681ec4 PB |
1848 | hash table. */ |
1849 | ||
1850 | static bfd_boolean | |
57e8b36a | 1851 | elf32_arm_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5e681ec4 PB |
1852 | { |
1853 | struct elf32_arm_link_hash_table *htab; | |
1854 | ||
1855 | htab = elf32_arm_hash_table (info); | |
1856 | if (!htab->sgot && !create_got_section (dynobj, info)) | |
1857 | return FALSE; | |
1858 | ||
1859 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
1860 | return FALSE; | |
1861 | ||
1862 | htab->splt = bfd_get_section_by_name (dynobj, ".plt"); | |
00a97672 RS |
1863 | htab->srelplt = bfd_get_section_by_name (dynobj, |
1864 | RELOC_SECTION (htab, ".plt")); | |
5e681ec4 PB |
1865 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); |
1866 | if (!info->shared) | |
00a97672 RS |
1867 | htab->srelbss = bfd_get_section_by_name (dynobj, |
1868 | RELOC_SECTION (htab, ".bss")); | |
1869 | ||
1870 | if (htab->vxworks_p) | |
1871 | { | |
1872 | if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2)) | |
1873 | return FALSE; | |
1874 | ||
1875 | if (info->shared) | |
1876 | { | |
1877 | htab->plt_header_size = 0; | |
1878 | htab->plt_entry_size | |
1879 | = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry); | |
1880 | } | |
1881 | else | |
1882 | { | |
1883 | htab->plt_header_size | |
1884 | = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry); | |
1885 | htab->plt_entry_size | |
1886 | = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry); | |
1887 | } | |
1888 | } | |
5e681ec4 | 1889 | |
e5a52504 MM |
1890 | if (!htab->splt |
1891 | || !htab->srelplt | |
1892 | || !htab->sdynbss | |
5e681ec4 PB |
1893 | || (!info->shared && !htab->srelbss)) |
1894 | abort (); | |
1895 | ||
1896 | return TRUE; | |
1897 | } | |
1898 | ||
1899 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
1900 | ||
1901 | static void | |
fcfa13d2 | 1902 | elf32_arm_copy_indirect_symbol (struct bfd_link_info *info, |
5e681ec4 PB |
1903 | struct elf_link_hash_entry *dir, |
1904 | struct elf_link_hash_entry *ind) | |
1905 | { | |
1906 | struct elf32_arm_link_hash_entry *edir, *eind; | |
1907 | ||
1908 | edir = (struct elf32_arm_link_hash_entry *) dir; | |
1909 | eind = (struct elf32_arm_link_hash_entry *) ind; | |
1910 | ||
1911 | if (eind->relocs_copied != NULL) | |
1912 | { | |
1913 | if (edir->relocs_copied != NULL) | |
1914 | { | |
1915 | struct elf32_arm_relocs_copied **pp; | |
1916 | struct elf32_arm_relocs_copied *p; | |
1917 | ||
fcfa13d2 | 1918 | /* Add reloc counts against the indirect sym to the direct sym |
5e681ec4 PB |
1919 | list. Merge any entries against the same section. */ |
1920 | for (pp = &eind->relocs_copied; (p = *pp) != NULL; ) | |
1921 | { | |
1922 | struct elf32_arm_relocs_copied *q; | |
1923 | ||
1924 | for (q = edir->relocs_copied; q != NULL; q = q->next) | |
1925 | if (q->section == p->section) | |
1926 | { | |
ba93b8ac | 1927 | q->pc_count += p->pc_count; |
5e681ec4 PB |
1928 | q->count += p->count; |
1929 | *pp = p->next; | |
1930 | break; | |
1931 | } | |
1932 | if (q == NULL) | |
1933 | pp = &p->next; | |
1934 | } | |
1935 | *pp = edir->relocs_copied; | |
1936 | } | |
1937 | ||
1938 | edir->relocs_copied = eind->relocs_copied; | |
1939 | eind->relocs_copied = NULL; | |
1940 | } | |
1941 | ||
fcfa13d2 AM |
1942 | /* Copy over PLT info. */ |
1943 | edir->plt_thumb_refcount += eind->plt_thumb_refcount; | |
1944 | eind->plt_thumb_refcount = 0; | |
b7693d02 | 1945 | |
ba93b8ac DJ |
1946 | if (ind->root.type == bfd_link_hash_indirect |
1947 | && dir->got.refcount <= 0) | |
1948 | { | |
1949 | edir->tls_type = eind->tls_type; | |
1950 | eind->tls_type = GOT_UNKNOWN; | |
1951 | } | |
1952 | ||
fcfa13d2 | 1953 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
5e681ec4 PB |
1954 | } |
1955 | ||
9b485d32 | 1956 | /* Create an ARM elf linker hash table. */ |
252b5132 RH |
1957 | |
1958 | static struct bfd_link_hash_table * | |
57e8b36a | 1959 | elf32_arm_link_hash_table_create (bfd *abfd) |
252b5132 RH |
1960 | { |
1961 | struct elf32_arm_link_hash_table *ret; | |
dc810e39 | 1962 | bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table); |
252b5132 | 1963 | |
57e8b36a NC |
1964 | ret = bfd_malloc (amt); |
1965 | if (ret == NULL) | |
252b5132 RH |
1966 | return NULL; |
1967 | ||
57e8b36a | 1968 | if (!_bfd_elf_link_hash_table_init (& ret->root, abfd, |
780a67af | 1969 | elf32_arm_link_hash_newfunc)) |
252b5132 | 1970 | { |
e2d34d7d | 1971 | free (ret); |
252b5132 RH |
1972 | return NULL; |
1973 | } | |
1974 | ||
5e681ec4 PB |
1975 | ret->sgot = NULL; |
1976 | ret->sgotplt = NULL; | |
1977 | ret->srelgot = NULL; | |
1978 | ret->splt = NULL; | |
1979 | ret->srelplt = NULL; | |
1980 | ret->sdynbss = NULL; | |
1981 | ret->srelbss = NULL; | |
00a97672 | 1982 | ret->srelplt2 = NULL; |
252b5132 RH |
1983 | ret->thumb_glue_size = 0; |
1984 | ret->arm_glue_size = 0; | |
1985 | ret->bfd_of_glue_owner = NULL; | |
e489d0ae | 1986 | ret->byteswap_code = 0; |
9c504268 | 1987 | ret->target1_is_rel = 0; |
eb043451 | 1988 | ret->target2_reloc = R_ARM_NONE; |
e5a52504 MM |
1989 | #ifdef FOUR_WORD_PLT |
1990 | ret->plt_header_size = 16; | |
1991 | ret->plt_entry_size = 16; | |
1992 | #else | |
1993 | ret->plt_header_size = 20; | |
1994 | ret->plt_entry_size = 12; | |
1995 | #endif | |
33bfe774 JB |
1996 | ret->fix_v4bx = 0; |
1997 | ret->use_blx = 0; | |
00a97672 | 1998 | ret->vxworks_p = 0; |
e5a52504 | 1999 | ret->symbian_p = 0; |
4e7fd91e | 2000 | ret->use_rel = 1; |
5e681ec4 | 2001 | ret->sym_sec.abfd = NULL; |
b7693d02 | 2002 | ret->obfd = abfd; |
ba93b8ac | 2003 | ret->tls_ldm_got.refcount = 0; |
252b5132 RH |
2004 | |
2005 | return &ret->root.root; | |
2006 | } | |
2007 | ||
9b485d32 NC |
2008 | /* Locate the Thumb encoded calling stub for NAME. */ |
2009 | ||
252b5132 | 2010 | static struct elf_link_hash_entry * |
57e8b36a NC |
2011 | find_thumb_glue (struct bfd_link_info *link_info, |
2012 | const char *name, | |
2013 | bfd *input_bfd) | |
252b5132 RH |
2014 | { |
2015 | char *tmp_name; | |
2016 | struct elf_link_hash_entry *hash; | |
2017 | struct elf32_arm_link_hash_table *hash_table; | |
2018 | ||
2019 | /* We need a pointer to the armelf specific hash table. */ | |
2020 | hash_table = elf32_arm_hash_table (link_info); | |
2021 | ||
57e8b36a NC |
2022 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
2023 | + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1); | |
252b5132 RH |
2024 | |
2025 | BFD_ASSERT (tmp_name); | |
2026 | ||
2027 | sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); | |
2028 | ||
2029 | hash = elf_link_hash_lookup | |
b34976b6 | 2030 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 RH |
2031 | |
2032 | if (hash == NULL) | |
2033 | /* xgettext:c-format */ | |
d003868e AM |
2034 | (*_bfd_error_handler) (_("%B: unable to find THUMB glue '%s' for `%s'"), |
2035 | input_bfd, tmp_name, name); | |
252b5132 RH |
2036 | |
2037 | free (tmp_name); | |
2038 | ||
2039 | return hash; | |
2040 | } | |
2041 | ||
9b485d32 NC |
2042 | /* Locate the ARM encoded calling stub for NAME. */ |
2043 | ||
252b5132 | 2044 | static struct elf_link_hash_entry * |
57e8b36a NC |
2045 | find_arm_glue (struct bfd_link_info *link_info, |
2046 | const char *name, | |
2047 | bfd *input_bfd) | |
252b5132 RH |
2048 | { |
2049 | char *tmp_name; | |
2050 | struct elf_link_hash_entry *myh; | |
2051 | struct elf32_arm_link_hash_table *hash_table; | |
2052 | ||
2053 | /* We need a pointer to the elfarm specific hash table. */ | |
2054 | hash_table = elf32_arm_hash_table (link_info); | |
2055 | ||
57e8b36a NC |
2056 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
2057 | + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1); | |
252b5132 RH |
2058 | |
2059 | BFD_ASSERT (tmp_name); | |
2060 | ||
2061 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); | |
2062 | ||
2063 | myh = elf_link_hash_lookup | |
b34976b6 | 2064 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 RH |
2065 | |
2066 | if (myh == NULL) | |
2067 | /* xgettext:c-format */ | |
d003868e AM |
2068 | (*_bfd_error_handler) (_("%B: unable to find ARM glue '%s' for `%s'"), |
2069 | input_bfd, tmp_name, name); | |
252b5132 RH |
2070 | |
2071 | free (tmp_name); | |
2072 | ||
2073 | return myh; | |
2074 | } | |
2075 | ||
8f6277f5 | 2076 | /* ARM->Thumb glue (static images): |
252b5132 RH |
2077 | |
2078 | .arm | |
2079 | __func_from_arm: | |
2080 | ldr r12, __func_addr | |
2081 | bx r12 | |
2082 | __func_addr: | |
8f6277f5 | 2083 | .word func @ behave as if you saw a ARM_32 reloc. |
252b5132 | 2084 | |
8f6277f5 PB |
2085 | (relocatable images) |
2086 | .arm | |
2087 | __func_from_arm: | |
2088 | ldr r12, __func_offset | |
2089 | add r12, r12, pc | |
2090 | bx r12 | |
2091 | __func_offset: | |
2092 | .word func - . | |
2093 | */ | |
2094 | ||
2095 | #define ARM2THUMB_STATIC_GLUE_SIZE 12 | |
252b5132 RH |
2096 | static const insn32 a2t1_ldr_insn = 0xe59fc000; |
2097 | static const insn32 a2t2_bx_r12_insn = 0xe12fff1c; | |
2098 | static const insn32 a2t3_func_addr_insn = 0x00000001; | |
2099 | ||
8f6277f5 PB |
2100 | #define ARM2THUMB_PIC_GLUE_SIZE 16 |
2101 | static const insn32 a2t1p_ldr_insn = 0xe59fc004; | |
2102 | static const insn32 a2t2p_add_pc_insn = 0xe08cc00f; | |
2103 | static const insn32 a2t3p_bx_r12_insn = 0xe12fff1c; | |
2104 | ||
9b485d32 | 2105 | /* Thumb->ARM: Thumb->(non-interworking aware) ARM |
252b5132 RH |
2106 | |
2107 | .thumb .thumb | |
2108 | .align 2 .align 2 | |
2109 | __func_from_thumb: __func_from_thumb: | |
2110 | bx pc push {r6, lr} | |
2111 | nop ldr r6, __func_addr | |
2112 | .arm mov lr, pc | |
2113 | __func_change_to_arm: bx r6 | |
2114 | b func .arm | |
2115 | __func_back_to_thumb: | |
2116 | ldmia r13! {r6, lr} | |
2117 | bx lr | |
2118 | __func_addr: | |
9b485d32 | 2119 | .word func */ |
252b5132 RH |
2120 | |
2121 | #define THUMB2ARM_GLUE_SIZE 8 | |
2122 | static const insn16 t2a1_bx_pc_insn = 0x4778; | |
2123 | static const insn16 t2a2_noop_insn = 0x46c0; | |
2124 | static const insn32 t2a3_b_insn = 0xea000000; | |
2125 | ||
7e392df6 | 2126 | #ifndef ELFARM_NABI_C_INCLUDED |
b34976b6 | 2127 | bfd_boolean |
57e8b36a | 2128 | bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info * info) |
252b5132 RH |
2129 | { |
2130 | asection * s; | |
2131 | bfd_byte * foo; | |
2132 | struct elf32_arm_link_hash_table * globals; | |
2133 | ||
2134 | globals = elf32_arm_hash_table (info); | |
2135 | ||
2136 | BFD_ASSERT (globals != NULL); | |
2137 | ||
2138 | if (globals->arm_glue_size != 0) | |
2139 | { | |
2140 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
2141 | ||
dc810e39 AM |
2142 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, |
2143 | ARM2THUMB_GLUE_SECTION_NAME); | |
252b5132 RH |
2144 | |
2145 | BFD_ASSERT (s != NULL); | |
2146 | ||
57e8b36a | 2147 | foo = bfd_alloc (globals->bfd_of_glue_owner, globals->arm_glue_size); |
252b5132 | 2148 | |
eea6121a | 2149 | s->size = globals->arm_glue_size; |
252b5132 RH |
2150 | s->contents = foo; |
2151 | } | |
2152 | ||
2153 | if (globals->thumb_glue_size != 0) | |
2154 | { | |
2155 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
2156 | ||
2157 | s = bfd_get_section_by_name | |
2158 | (globals->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME); | |
2159 | ||
2160 | BFD_ASSERT (s != NULL); | |
2161 | ||
57e8b36a | 2162 | foo = bfd_alloc (globals->bfd_of_glue_owner, globals->thumb_glue_size); |
252b5132 | 2163 | |
eea6121a | 2164 | s->size = globals->thumb_glue_size; |
252b5132 RH |
2165 | s->contents = foo; |
2166 | } | |
2167 | ||
b34976b6 | 2168 | return TRUE; |
252b5132 RH |
2169 | } |
2170 | ||
2171 | static void | |
57e8b36a NC |
2172 | record_arm_to_thumb_glue (struct bfd_link_info * link_info, |
2173 | struct elf_link_hash_entry * h) | |
252b5132 RH |
2174 | { |
2175 | const char * name = h->root.root.string; | |
63b0f745 | 2176 | asection * s; |
252b5132 RH |
2177 | char * tmp_name; |
2178 | struct elf_link_hash_entry * myh; | |
14a793b2 | 2179 | struct bfd_link_hash_entry * bh; |
252b5132 | 2180 | struct elf32_arm_link_hash_table * globals; |
dc810e39 | 2181 | bfd_vma val; |
252b5132 RH |
2182 | |
2183 | globals = elf32_arm_hash_table (link_info); | |
2184 | ||
2185 | BFD_ASSERT (globals != NULL); | |
2186 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
2187 | ||
2188 | s = bfd_get_section_by_name | |
2189 | (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME); | |
2190 | ||
252b5132 RH |
2191 | BFD_ASSERT (s != NULL); |
2192 | ||
57e8b36a | 2193 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1); |
252b5132 RH |
2194 | |
2195 | BFD_ASSERT (tmp_name); | |
2196 | ||
2197 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); | |
2198 | ||
2199 | myh = elf_link_hash_lookup | |
b34976b6 | 2200 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 RH |
2201 | |
2202 | if (myh != NULL) | |
2203 | { | |
9b485d32 | 2204 | /* We've already seen this guy. */ |
252b5132 | 2205 | free (tmp_name); |
9b485d32 | 2206 | return; |
252b5132 RH |
2207 | } |
2208 | ||
57e8b36a NC |
2209 | /* The only trick here is using hash_table->arm_glue_size as the value. |
2210 | Even though the section isn't allocated yet, this is where we will be | |
2211 | putting it. */ | |
14a793b2 | 2212 | bh = NULL; |
dc810e39 AM |
2213 | val = globals->arm_glue_size + 1; |
2214 | _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner, | |
2215 | tmp_name, BSF_GLOBAL, s, val, | |
b34976b6 | 2216 | NULL, TRUE, FALSE, &bh); |
252b5132 | 2217 | |
b7693d02 DJ |
2218 | myh = (struct elf_link_hash_entry *) bh; |
2219 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
2220 | myh->forced_local = 1; | |
2221 | ||
252b5132 RH |
2222 | free (tmp_name); |
2223 | ||
8f6277f5 PB |
2224 | if ((link_info->shared || globals->root.is_relocatable_executable)) |
2225 | globals->arm_glue_size += ARM2THUMB_PIC_GLUE_SIZE; | |
2226 | else | |
2227 | globals->arm_glue_size += ARM2THUMB_STATIC_GLUE_SIZE; | |
252b5132 RH |
2228 | |
2229 | return; | |
2230 | } | |
2231 | ||
2232 | static void | |
57e8b36a NC |
2233 | record_thumb_to_arm_glue (struct bfd_link_info *link_info, |
2234 | struct elf_link_hash_entry *h) | |
252b5132 RH |
2235 | { |
2236 | const char *name = h->root.root.string; | |
63b0f745 | 2237 | asection *s; |
252b5132 RH |
2238 | char *tmp_name; |
2239 | struct elf_link_hash_entry *myh; | |
14a793b2 | 2240 | struct bfd_link_hash_entry *bh; |
252b5132 | 2241 | struct elf32_arm_link_hash_table *hash_table; |
dc810e39 | 2242 | bfd_vma val; |
252b5132 RH |
2243 | |
2244 | hash_table = elf32_arm_hash_table (link_info); | |
2245 | ||
2246 | BFD_ASSERT (hash_table != NULL); | |
2247 | BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL); | |
2248 | ||
2249 | s = bfd_get_section_by_name | |
2250 | (hash_table->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME); | |
2251 | ||
2252 | BFD_ASSERT (s != NULL); | |
2253 | ||
57e8b36a NC |
2254 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
2255 | + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1); | |
252b5132 RH |
2256 | |
2257 | BFD_ASSERT (tmp_name); | |
2258 | ||
2259 | sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); | |
2260 | ||
2261 | myh = elf_link_hash_lookup | |
b34976b6 | 2262 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 RH |
2263 | |
2264 | if (myh != NULL) | |
2265 | { | |
9b485d32 | 2266 | /* We've already seen this guy. */ |
252b5132 | 2267 | free (tmp_name); |
9b485d32 | 2268 | return; |
252b5132 RH |
2269 | } |
2270 | ||
14a793b2 | 2271 | bh = NULL; |
dc810e39 AM |
2272 | val = hash_table->thumb_glue_size + 1; |
2273 | _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, | |
2274 | tmp_name, BSF_GLOBAL, s, val, | |
b34976b6 | 2275 | NULL, TRUE, FALSE, &bh); |
252b5132 | 2276 | |
9b485d32 | 2277 | /* If we mark it 'Thumb', the disassembler will do a better job. */ |
14a793b2 | 2278 | myh = (struct elf_link_hash_entry *) bh; |
b7693d02 DJ |
2279 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC); |
2280 | myh->forced_local = 1; | |
252b5132 RH |
2281 | |
2282 | free (tmp_name); | |
2283 | ||
252b5132 RH |
2284 | #define CHANGE_TO_ARM "__%s_change_to_arm" |
2285 | #define BACK_FROM_ARM "__%s_back_from_arm" | |
2286 | ||
9b485d32 | 2287 | /* Allocate another symbol to mark where we switch to Arm mode. */ |
57e8b36a NC |
2288 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
2289 | + strlen (CHANGE_TO_ARM) + 1); | |
252b5132 RH |
2290 | |
2291 | BFD_ASSERT (tmp_name); | |
2292 | ||
2293 | sprintf (tmp_name, CHANGE_TO_ARM, name); | |
2294 | ||
14a793b2 | 2295 | bh = NULL; |
dc810e39 AM |
2296 | val = hash_table->thumb_glue_size + 4, |
2297 | _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, | |
2298 | tmp_name, BSF_LOCAL, s, val, | |
b34976b6 | 2299 | NULL, TRUE, FALSE, &bh); |
252b5132 RH |
2300 | |
2301 | free (tmp_name); | |
2302 | ||
2303 | hash_table->thumb_glue_size += THUMB2ARM_GLUE_SIZE; | |
2304 | ||
2305 | return; | |
2306 | } | |
2307 | ||
8afb0e02 NC |
2308 | /* Add the glue sections to ABFD. This function is called from the |
2309 | linker scripts in ld/emultempl/{armelf}.em. */ | |
9b485d32 | 2310 | |
b34976b6 | 2311 | bfd_boolean |
57e8b36a NC |
2312 | bfd_elf32_arm_add_glue_sections_to_bfd (bfd *abfd, |
2313 | struct bfd_link_info *info) | |
252b5132 | 2314 | { |
252b5132 RH |
2315 | flagword flags; |
2316 | asection *sec; | |
2317 | ||
8afb0e02 NC |
2318 | /* If we are only performing a partial |
2319 | link do not bother adding the glue. */ | |
1049f94e | 2320 | if (info->relocatable) |
b34976b6 | 2321 | return TRUE; |
252b5132 | 2322 | |
252b5132 RH |
2323 | sec = bfd_get_section_by_name (abfd, ARM2THUMB_GLUE_SECTION_NAME); |
2324 | ||
2325 | if (sec == NULL) | |
2326 | { | |
57db232e NC |
2327 | /* Note: we do not include the flag SEC_LINKER_CREATED, as this |
2328 | will prevent elf_link_input_bfd() from processing the contents | |
2329 | of this section. */ | |
811b4bf6 | 2330 | flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_CODE | SEC_READONLY; |
252b5132 | 2331 | |
3496cb2a L |
2332 | sec = bfd_make_section_with_flags (abfd, |
2333 | ARM2THUMB_GLUE_SECTION_NAME, | |
2334 | flags); | |
252b5132 RH |
2335 | |
2336 | if (sec == NULL | |
252b5132 | 2337 | || !bfd_set_section_alignment (abfd, sec, 2)) |
b34976b6 | 2338 | return FALSE; |
9a5aca8c | 2339 | |
57db232e NC |
2340 | /* Set the gc mark to prevent the section from being removed by garbage |
2341 | collection, despite the fact that no relocs refer to this section. */ | |
2342 | sec->gc_mark = 1; | |
252b5132 RH |
2343 | } |
2344 | ||
2345 | sec = bfd_get_section_by_name (abfd, THUMB2ARM_GLUE_SECTION_NAME); | |
2346 | ||
2347 | if (sec == NULL) | |
2348 | { | |
57e8b36a NC |
2349 | flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
2350 | | SEC_CODE | SEC_READONLY; | |
252b5132 | 2351 | |
3496cb2a L |
2352 | sec = bfd_make_section_with_flags (abfd, |
2353 | THUMB2ARM_GLUE_SECTION_NAME, | |
2354 | flags); | |
252b5132 RH |
2355 | |
2356 | if (sec == NULL | |
252b5132 | 2357 | || !bfd_set_section_alignment (abfd, sec, 2)) |
b34976b6 | 2358 | return FALSE; |
9a5aca8c | 2359 | |
57db232e | 2360 | sec->gc_mark = 1; |
252b5132 RH |
2361 | } |
2362 | ||
b34976b6 | 2363 | return TRUE; |
8afb0e02 NC |
2364 | } |
2365 | ||
2366 | /* Select a BFD to be used to hold the sections used by the glue code. | |
2367 | This function is called from the linker scripts in ld/emultempl/ | |
2368 | {armelf/pe}.em */ | |
2369 | ||
b34976b6 | 2370 | bfd_boolean |
57e8b36a | 2371 | bfd_elf32_arm_get_bfd_for_interworking (bfd *abfd, struct bfd_link_info *info) |
8afb0e02 NC |
2372 | { |
2373 | struct elf32_arm_link_hash_table *globals; | |
2374 | ||
2375 | /* If we are only performing a partial link | |
2376 | do not bother getting a bfd to hold the glue. */ | |
1049f94e | 2377 | if (info->relocatable) |
b34976b6 | 2378 | return TRUE; |
8afb0e02 | 2379 | |
b7693d02 DJ |
2380 | /* Make sure we don't attach the glue sections to a dynamic object. */ |
2381 | BFD_ASSERT (!(abfd->flags & DYNAMIC)); | |
2382 | ||
8afb0e02 NC |
2383 | globals = elf32_arm_hash_table (info); |
2384 | ||
2385 | BFD_ASSERT (globals != NULL); | |
2386 | ||
2387 | if (globals->bfd_of_glue_owner != NULL) | |
b34976b6 | 2388 | return TRUE; |
8afb0e02 | 2389 | |
252b5132 RH |
2390 | /* Save the bfd for later use. */ |
2391 | globals->bfd_of_glue_owner = abfd; | |
cedb70c5 | 2392 | |
b34976b6 | 2393 | return TRUE; |
252b5132 RH |
2394 | } |
2395 | ||
39b41c9c PB |
2396 | static void check_use_blx(struct elf32_arm_link_hash_table *globals) |
2397 | { | |
2398 | if (elf32_arm_get_eabi_attr_int (globals->obfd, Tag_CPU_arch) > 2) | |
2399 | globals->use_blx = 1; | |
2400 | } | |
2401 | ||
b34976b6 | 2402 | bfd_boolean |
57e8b36a NC |
2403 | bfd_elf32_arm_process_before_allocation (bfd *abfd, |
2404 | struct bfd_link_info *link_info, | |
eb043451 | 2405 | int byteswap_code) |
252b5132 RH |
2406 | { |
2407 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 2408 | Elf_Internal_Rela *internal_relocs = NULL; |
252b5132 RH |
2409 | Elf_Internal_Rela *irel, *irelend; |
2410 | bfd_byte *contents = NULL; | |
252b5132 RH |
2411 | |
2412 | asection *sec; | |
2413 | struct elf32_arm_link_hash_table *globals; | |
2414 | ||
2415 | /* If we are only performing a partial link do not bother | |
2416 | to construct any glue. */ | |
1049f94e | 2417 | if (link_info->relocatable) |
b34976b6 | 2418 | return TRUE; |
252b5132 RH |
2419 | |
2420 | /* Here we have a bfd that is to be included on the link. We have a hook | |
2421 | to do reloc rummaging, before section sizes are nailed down. */ | |
252b5132 | 2422 | globals = elf32_arm_hash_table (link_info); |
39b41c9c | 2423 | check_use_blx (globals); |
252b5132 RH |
2424 | |
2425 | BFD_ASSERT (globals != NULL); | |
2426 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
2427 | ||
e489d0ae PB |
2428 | if (byteswap_code && !bfd_big_endian (abfd)) |
2429 | { | |
d003868e AM |
2430 | _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."), |
2431 | abfd); | |
e489d0ae PB |
2432 | return FALSE; |
2433 | } | |
2434 | globals->byteswap_code = byteswap_code; | |
f21f3fe0 | 2435 | |
252b5132 RH |
2436 | /* Rummage around all the relocs and map the glue vectors. */ |
2437 | sec = abfd->sections; | |
2438 | ||
2439 | if (sec == NULL) | |
b34976b6 | 2440 | return TRUE; |
252b5132 RH |
2441 | |
2442 | for (; sec != NULL; sec = sec->next) | |
2443 | { | |
2444 | if (sec->reloc_count == 0) | |
2445 | continue; | |
2446 | ||
2447 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
252b5132 | 2448 | |
9b485d32 | 2449 | /* Load the relocs. */ |
6cdc0ccc | 2450 | internal_relocs |
57e8b36a | 2451 | = _bfd_elf_link_read_relocs (abfd, sec, (void *) NULL, |
45d6a902 | 2452 | (Elf_Internal_Rela *) NULL, FALSE); |
252b5132 | 2453 | |
6cdc0ccc AM |
2454 | if (internal_relocs == NULL) |
2455 | goto error_return; | |
252b5132 | 2456 | |
6cdc0ccc AM |
2457 | irelend = internal_relocs + sec->reloc_count; |
2458 | for (irel = internal_relocs; irel < irelend; irel++) | |
252b5132 RH |
2459 | { |
2460 | long r_type; | |
2461 | unsigned long r_index; | |
252b5132 RH |
2462 | |
2463 | struct elf_link_hash_entry *h; | |
2464 | ||
2465 | r_type = ELF32_R_TYPE (irel->r_info); | |
2466 | r_index = ELF32_R_SYM (irel->r_info); | |
2467 | ||
9b485d32 | 2468 | /* These are the only relocation types we care about. */ |
ba96a88f | 2469 | if ( r_type != R_ARM_PC24 |
b7693d02 | 2470 | && r_type != R_ARM_PLT32 |
5b5bb741 PB |
2471 | && r_type != R_ARM_CALL |
2472 | && r_type != R_ARM_JUMP24 | |
c19d1205 | 2473 | && r_type != R_ARM_THM_CALL) |
252b5132 RH |
2474 | continue; |
2475 | ||
2476 | /* Get the section contents if we haven't done so already. */ | |
2477 | if (contents == NULL) | |
2478 | { | |
2479 | /* Get cached copy if it exists. */ | |
2480 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
2481 | contents = elf_section_data (sec)->this_hdr.contents; | |
2482 | else | |
2483 | { | |
2484 | /* Go get them off disk. */ | |
57e8b36a | 2485 | if (! bfd_malloc_and_get_section (abfd, sec, &contents)) |
252b5132 RH |
2486 | goto error_return; |
2487 | } | |
2488 | } | |
2489 | ||
a7c10850 | 2490 | /* If the relocation is not against a symbol it cannot concern us. */ |
252b5132 RH |
2491 | h = NULL; |
2492 | ||
9b485d32 | 2493 | /* We don't care about local symbols. */ |
252b5132 RH |
2494 | if (r_index < symtab_hdr->sh_info) |
2495 | continue; | |
2496 | ||
9b485d32 | 2497 | /* This is an external symbol. */ |
252b5132 RH |
2498 | r_index -= symtab_hdr->sh_info; |
2499 | h = (struct elf_link_hash_entry *) | |
2500 | elf_sym_hashes (abfd)[r_index]; | |
2501 | ||
2502 | /* If the relocation is against a static symbol it must be within | |
2503 | the current section and so cannot be a cross ARM/Thumb relocation. */ | |
2504 | if (h == NULL) | |
2505 | continue; | |
2506 | ||
b7693d02 DJ |
2507 | /* If the call will go through a PLT entry then we do not need |
2508 | glue. */ | |
2509 | if (globals->splt != NULL && h->plt.offset != (bfd_vma) -1) | |
2510 | continue; | |
2511 | ||
252b5132 RH |
2512 | switch (r_type) |
2513 | { | |
2514 | case R_ARM_PC24: | |
c6596c5e | 2515 | case R_ARM_PLT32: |
5b5bb741 PB |
2516 | case R_ARM_CALL: |
2517 | case R_ARM_JUMP24: | |
252b5132 | 2518 | /* This one is a call from arm code. We need to look up |
2f0ca46a | 2519 | the target of the call. If it is a thumb target, we |
252b5132 | 2520 | insert glue. */ |
39b41c9c PB |
2521 | if (ELF_ST_TYPE(h->type) == STT_ARM_TFUNC |
2522 | && !(r_type == R_ARM_CALL && globals->use_blx)) | |
252b5132 RH |
2523 | record_arm_to_thumb_glue (link_info, h); |
2524 | break; | |
2525 | ||
c19d1205 | 2526 | case R_ARM_THM_CALL: |
f21f3fe0 | 2527 | /* This one is a call from thumb code. We look |
2f0ca46a | 2528 | up the target of the call. If it is not a thumb |
bcbdc74c | 2529 | target, we insert glue. */ |
39b41c9c | 2530 | if (ELF_ST_TYPE (h->type) != STT_ARM_TFUNC && !globals->use_blx) |
252b5132 RH |
2531 | record_thumb_to_arm_glue (link_info, h); |
2532 | break; | |
2533 | ||
2534 | default: | |
c6596c5e | 2535 | abort (); |
252b5132 RH |
2536 | } |
2537 | } | |
6cdc0ccc AM |
2538 | |
2539 | if (contents != NULL | |
2540 | && elf_section_data (sec)->this_hdr.contents != contents) | |
2541 | free (contents); | |
2542 | contents = NULL; | |
2543 | ||
2544 | if (internal_relocs != NULL | |
2545 | && elf_section_data (sec)->relocs != internal_relocs) | |
2546 | free (internal_relocs); | |
2547 | internal_relocs = NULL; | |
252b5132 RH |
2548 | } |
2549 | ||
b34976b6 | 2550 | return TRUE; |
9a5aca8c | 2551 | |
252b5132 | 2552 | error_return: |
6cdc0ccc AM |
2553 | if (contents != NULL |
2554 | && elf_section_data (sec)->this_hdr.contents != contents) | |
2555 | free (contents); | |
2556 | if (internal_relocs != NULL | |
2557 | && elf_section_data (sec)->relocs != internal_relocs) | |
2558 | free (internal_relocs); | |
9a5aca8c | 2559 | |
b34976b6 | 2560 | return FALSE; |
252b5132 | 2561 | } |
7e392df6 | 2562 | #endif |
252b5132 | 2563 | |
eb043451 | 2564 | |
eb043451 PB |
2565 | /* Set target relocation values needed during linking. */ |
2566 | ||
2567 | void | |
2568 | bfd_elf32_arm_set_target_relocs (struct bfd_link_info *link_info, | |
2569 | int target1_is_rel, | |
319850b4 | 2570 | char * target2_type, |
33bfe774 JB |
2571 | int fix_v4bx, |
2572 | int use_blx) | |
eb043451 PB |
2573 | { |
2574 | struct elf32_arm_link_hash_table *globals; | |
2575 | ||
2576 | globals = elf32_arm_hash_table (link_info); | |
2577 | ||
2578 | globals->target1_is_rel = target1_is_rel; | |
2579 | if (strcmp (target2_type, "rel") == 0) | |
2580 | globals->target2_reloc = R_ARM_REL32; | |
eeac373a PB |
2581 | else if (strcmp (target2_type, "abs") == 0) |
2582 | globals->target2_reloc = R_ARM_ABS32; | |
eb043451 PB |
2583 | else if (strcmp (target2_type, "got-rel") == 0) |
2584 | globals->target2_reloc = R_ARM_GOT_PREL; | |
2585 | else | |
2586 | { | |
2587 | _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."), | |
2588 | target2_type); | |
2589 | } | |
319850b4 | 2590 | globals->fix_v4bx = fix_v4bx; |
33bfe774 | 2591 | globals->use_blx |= use_blx; |
eb043451 | 2592 | } |
eb043451 | 2593 | |
252b5132 RH |
2594 | /* The thumb form of a long branch is a bit finicky, because the offset |
2595 | encoding is split over two fields, each in it's own instruction. They | |
f21f3fe0 | 2596 | can occur in any order. So given a thumb form of long branch, and an |
252b5132 | 2597 | offset, insert the offset into the thumb branch and return finished |
f21f3fe0 | 2598 | instruction. |
252b5132 | 2599 | |
f21f3fe0 | 2600 | It takes two thumb instructions to encode the target address. Each has |
4cc11e76 | 2601 | 11 bits to invest. The upper 11 bits are stored in one (identified by |
f21f3fe0 UD |
2602 | H-0.. see below), the lower 11 bits are stored in the other (identified |
2603 | by H-1). | |
252b5132 | 2604 | |
f21f3fe0 | 2605 | Combine together and shifted left by 1 (it's a half word address) and |
252b5132 RH |
2606 | there you have it. |
2607 | ||
2608 | Op: 1111 = F, | |
2609 | H-0, upper address-0 = 000 | |
2610 | Op: 1111 = F, | |
2611 | H-1, lower address-0 = 800 | |
2612 | ||
f21f3fe0 | 2613 | They can be ordered either way, but the arm tools I've seen always put |
252b5132 RH |
2614 | the lower one first. It probably doesn't matter. krk@cygnus.com |
2615 | ||
2616 | XXX: Actually the order does matter. The second instruction (H-1) | |
2617 | moves the computed address into the PC, so it must be the second one | |
2618 | in the sequence. The problem, however is that whilst little endian code | |
2619 | stores the instructions in HI then LOW order, big endian code does the | |
dfc5f959 | 2620 | reverse. nickc@cygnus.com. */ |
252b5132 | 2621 | |
dfc5f959 NC |
2622 | #define LOW_HI_ORDER 0xF800F000 |
2623 | #define HI_LOW_ORDER 0xF000F800 | |
252b5132 RH |
2624 | |
2625 | static insn32 | |
57e8b36a | 2626 | insert_thumb_branch (insn32 br_insn, int rel_off) |
252b5132 RH |
2627 | { |
2628 | unsigned int low_bits; | |
2629 | unsigned int high_bits; | |
2630 | ||
252b5132 RH |
2631 | BFD_ASSERT ((rel_off & 1) != 1); |
2632 | ||
dfc5f959 NC |
2633 | rel_off >>= 1; /* Half word aligned address. */ |
2634 | low_bits = rel_off & 0x000007FF; /* The bottom 11 bits. */ | |
2635 | high_bits = (rel_off >> 11) & 0x000007FF; /* The top 11 bits. */ | |
252b5132 RH |
2636 | |
2637 | if ((br_insn & LOW_HI_ORDER) == LOW_HI_ORDER) | |
2638 | br_insn = LOW_HI_ORDER | (low_bits << 16) | high_bits; | |
2639 | else if ((br_insn & HI_LOW_ORDER) == HI_LOW_ORDER) | |
2640 | br_insn = HI_LOW_ORDER | (high_bits << 16) | low_bits; | |
2641 | else | |
9b485d32 | 2642 | /* FIXME: abort is probably not the right call. krk@cygnus.com */ |
57e8b36a | 2643 | abort (); /* Error - not a valid branch instruction form. */ |
252b5132 | 2644 | |
252b5132 RH |
2645 | return br_insn; |
2646 | } | |
2647 | ||
9b485d32 NC |
2648 | /* Thumb code calling an ARM function. */ |
2649 | ||
252b5132 | 2650 | static int |
57e8b36a NC |
2651 | elf32_thumb_to_arm_stub (struct bfd_link_info * info, |
2652 | const char * name, | |
2653 | bfd * input_bfd, | |
2654 | bfd * output_bfd, | |
2655 | asection * input_section, | |
2656 | bfd_byte * hit_data, | |
2657 | asection * sym_sec, | |
2658 | bfd_vma offset, | |
2659 | bfd_signed_vma addend, | |
2660 | bfd_vma val) | |
252b5132 | 2661 | { |
bcbdc74c | 2662 | asection * s = 0; |
dc810e39 | 2663 | bfd_vma my_offset; |
252b5132 RH |
2664 | unsigned long int tmp; |
2665 | long int ret_offset; | |
bcbdc74c NC |
2666 | struct elf_link_hash_entry * myh; |
2667 | struct elf32_arm_link_hash_table * globals; | |
252b5132 RH |
2668 | |
2669 | myh = find_thumb_glue (info, name, input_bfd); | |
2670 | if (myh == NULL) | |
b34976b6 | 2671 | return FALSE; |
252b5132 RH |
2672 | |
2673 | globals = elf32_arm_hash_table (info); | |
2674 | ||
2675 | BFD_ASSERT (globals != NULL); | |
2676 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
2677 | ||
2678 | my_offset = myh->root.u.def.value; | |
2679 | ||
2680 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
2681 | THUMB2ARM_GLUE_SECTION_NAME); | |
2682 | ||
2683 | BFD_ASSERT (s != NULL); | |
2684 | BFD_ASSERT (s->contents != NULL); | |
2685 | BFD_ASSERT (s->output_section != NULL); | |
2686 | ||
2687 | if ((my_offset & 0x01) == 0x01) | |
2688 | { | |
2689 | if (sym_sec != NULL | |
2690 | && sym_sec->owner != NULL | |
2691 | && !INTERWORK_FLAG (sym_sec->owner)) | |
2692 | { | |
8f615d07 | 2693 | (*_bfd_error_handler) |
d003868e AM |
2694 | (_("%B(%s): warning: interworking not enabled.\n" |
2695 | " first occurrence: %B: thumb call to arm"), | |
2696 | sym_sec->owner, input_bfd, name); | |
252b5132 | 2697 | |
b34976b6 | 2698 | return FALSE; |
252b5132 RH |
2699 | } |
2700 | ||
2701 | --my_offset; | |
2702 | myh->root.u.def.value = my_offset; | |
2703 | ||
dc810e39 | 2704 | bfd_put_16 (output_bfd, (bfd_vma) t2a1_bx_pc_insn, |
252b5132 RH |
2705 | s->contents + my_offset); |
2706 | ||
dc810e39 | 2707 | bfd_put_16 (output_bfd, (bfd_vma) t2a2_noop_insn, |
252b5132 RH |
2708 | s->contents + my_offset + 2); |
2709 | ||
2710 | ret_offset = | |
9b485d32 NC |
2711 | /* Address of destination of the stub. */ |
2712 | ((bfd_signed_vma) val) | |
252b5132 | 2713 | - ((bfd_signed_vma) |
57e8b36a NC |
2714 | /* Offset from the start of the current section |
2715 | to the start of the stubs. */ | |
9b485d32 NC |
2716 | (s->output_offset |
2717 | /* Offset of the start of this stub from the start of the stubs. */ | |
2718 | + my_offset | |
2719 | /* Address of the start of the current section. */ | |
2720 | + s->output_section->vma) | |
2721 | /* The branch instruction is 4 bytes into the stub. */ | |
2722 | + 4 | |
2723 | /* ARM branches work from the pc of the instruction + 8. */ | |
2724 | + 8); | |
252b5132 RH |
2725 | |
2726 | bfd_put_32 (output_bfd, | |
dc810e39 | 2727 | (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF), |
252b5132 RH |
2728 | s->contents + my_offset + 4); |
2729 | } | |
2730 | ||
2731 | BFD_ASSERT (my_offset <= globals->thumb_glue_size); | |
2732 | ||
427bfd90 NC |
2733 | /* Now go back and fix up the original BL insn to point to here. */ |
2734 | ret_offset = | |
2735 | /* Address of where the stub is located. */ | |
2736 | (s->output_section->vma + s->output_offset + my_offset) | |
2737 | /* Address of where the BL is located. */ | |
57e8b36a NC |
2738 | - (input_section->output_section->vma + input_section->output_offset |
2739 | + offset) | |
427bfd90 NC |
2740 | /* Addend in the relocation. */ |
2741 | - addend | |
2742 | /* Biassing for PC-relative addressing. */ | |
2743 | - 8; | |
252b5132 RH |
2744 | |
2745 | tmp = bfd_get_32 (input_bfd, hit_data | |
2746 | - input_section->vma); | |
2747 | ||
2748 | bfd_put_32 (output_bfd, | |
dc810e39 | 2749 | (bfd_vma) insert_thumb_branch (tmp, ret_offset), |
252b5132 RH |
2750 | hit_data - input_section->vma); |
2751 | ||
b34976b6 | 2752 | return TRUE; |
252b5132 RH |
2753 | } |
2754 | ||
9b485d32 NC |
2755 | /* Arm code calling a Thumb function. */ |
2756 | ||
252b5132 | 2757 | static int |
57e8b36a NC |
2758 | elf32_arm_to_thumb_stub (struct bfd_link_info * info, |
2759 | const char * name, | |
2760 | bfd * input_bfd, | |
2761 | bfd * output_bfd, | |
2762 | asection * input_section, | |
2763 | bfd_byte * hit_data, | |
2764 | asection * sym_sec, | |
2765 | bfd_vma offset, | |
2766 | bfd_signed_vma addend, | |
2767 | bfd_vma val) | |
252b5132 RH |
2768 | { |
2769 | unsigned long int tmp; | |
dc810e39 | 2770 | bfd_vma my_offset; |
bcbdc74c | 2771 | asection * s; |
252b5132 | 2772 | long int ret_offset; |
bcbdc74c NC |
2773 | struct elf_link_hash_entry * myh; |
2774 | struct elf32_arm_link_hash_table * globals; | |
252b5132 RH |
2775 | |
2776 | myh = find_arm_glue (info, name, input_bfd); | |
2777 | if (myh == NULL) | |
b34976b6 | 2778 | return FALSE; |
252b5132 RH |
2779 | |
2780 | globals = elf32_arm_hash_table (info); | |
2781 | ||
2782 | BFD_ASSERT (globals != NULL); | |
2783 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
2784 | ||
2785 | my_offset = myh->root.u.def.value; | |
2786 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
2787 | ARM2THUMB_GLUE_SECTION_NAME); | |
2788 | BFD_ASSERT (s != NULL); | |
2789 | BFD_ASSERT (s->contents != NULL); | |
2790 | BFD_ASSERT (s->output_section != NULL); | |
2791 | ||
2792 | if ((my_offset & 0x01) == 0x01) | |
2793 | { | |
2794 | if (sym_sec != NULL | |
2795 | && sym_sec->owner != NULL | |
2796 | && !INTERWORK_FLAG (sym_sec->owner)) | |
2797 | { | |
8f615d07 | 2798 | (*_bfd_error_handler) |
d003868e AM |
2799 | (_("%B(%s): warning: interworking not enabled.\n" |
2800 | " first occurrence: %B: arm call to thumb"), | |
2801 | sym_sec->owner, input_bfd, name); | |
252b5132 | 2802 | } |
9b485d32 | 2803 | |
252b5132 RH |
2804 | --my_offset; |
2805 | myh->root.u.def.value = my_offset; | |
2806 | ||
8f6277f5 PB |
2807 | if ((info->shared || globals->root.is_relocatable_executable)) |
2808 | { | |
2809 | /* For relocatable objects we can't use absolute addresses, | |
2810 | so construct the address from a relative offset. */ | |
2811 | /* TODO: If the offset is small it's probably worth | |
2812 | constructing the address with adds. */ | |
2813 | bfd_put_32 (output_bfd, (bfd_vma) a2t1p_ldr_insn, | |
2814 | s->contents + my_offset); | |
2815 | bfd_put_32 (output_bfd, (bfd_vma) a2t2p_add_pc_insn, | |
2816 | s->contents + my_offset + 4); | |
2817 | bfd_put_32 (output_bfd, (bfd_vma) a2t3p_bx_r12_insn, | |
2818 | s->contents + my_offset + 8); | |
2819 | /* Adjust the offset by 4 for the position of the add, | |
2820 | and 8 for the pipeline offset. */ | |
2821 | ret_offset = (val - (s->output_offset | |
2822 | + s->output_section->vma | |
2823 | + my_offset + 12)) | |
2824 | | 1; | |
2825 | bfd_put_32 (output_bfd, ret_offset, | |
2826 | s->contents + my_offset + 12); | |
2827 | } | |
2828 | else | |
2829 | { | |
2830 | bfd_put_32 (output_bfd, (bfd_vma) a2t1_ldr_insn, | |
2831 | s->contents + my_offset); | |
252b5132 | 2832 | |
8f6277f5 PB |
2833 | bfd_put_32 (output_bfd, (bfd_vma) a2t2_bx_r12_insn, |
2834 | s->contents + my_offset + 4); | |
252b5132 | 2835 | |
8f6277f5 PB |
2836 | /* It's a thumb address. Add the low order bit. */ |
2837 | bfd_put_32 (output_bfd, val | a2t3_func_addr_insn, | |
2838 | s->contents + my_offset + 8); | |
2839 | } | |
252b5132 RH |
2840 | } |
2841 | ||
2842 | BFD_ASSERT (my_offset <= globals->arm_glue_size); | |
2843 | ||
2844 | tmp = bfd_get_32 (input_bfd, hit_data); | |
2845 | tmp = tmp & 0xFF000000; | |
2846 | ||
9b485d32 | 2847 | /* Somehow these are both 4 too far, so subtract 8. */ |
dc810e39 AM |
2848 | ret_offset = (s->output_offset |
2849 | + my_offset | |
2850 | + s->output_section->vma | |
2851 | - (input_section->output_offset | |
2852 | + input_section->output_section->vma | |
2853 | + offset + addend) | |
2854 | - 8); | |
9a5aca8c | 2855 | |
252b5132 RH |
2856 | tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF); |
2857 | ||
dc810e39 | 2858 | bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma); |
252b5132 | 2859 | |
b34976b6 | 2860 | return TRUE; |
252b5132 RH |
2861 | } |
2862 | ||
eb043451 PB |
2863 | /* Some relocations map to different relocations depending on the |
2864 | target. Return the real relocation. */ | |
2865 | static int | |
2866 | arm_real_reloc_type (struct elf32_arm_link_hash_table * globals, | |
2867 | int r_type) | |
2868 | { | |
2869 | switch (r_type) | |
2870 | { | |
2871 | case R_ARM_TARGET1: | |
2872 | if (globals->target1_is_rel) | |
2873 | return R_ARM_REL32; | |
2874 | else | |
2875 | return R_ARM_ABS32; | |
2876 | ||
2877 | case R_ARM_TARGET2: | |
2878 | return globals->target2_reloc; | |
2879 | ||
2880 | default: | |
2881 | return r_type; | |
2882 | } | |
2883 | } | |
eb043451 | 2884 | |
ba93b8ac DJ |
2885 | /* Return the base VMA address which should be subtracted from real addresses |
2886 | when resolving @dtpoff relocation. | |
2887 | This is PT_TLS segment p_vaddr. */ | |
2888 | ||
2889 | static bfd_vma | |
2890 | dtpoff_base (struct bfd_link_info *info) | |
2891 | { | |
2892 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
2893 | if (elf_hash_table (info)->tls_sec == NULL) | |
2894 | return 0; | |
2895 | return elf_hash_table (info)->tls_sec->vma; | |
2896 | } | |
2897 | ||
2898 | /* Return the relocation value for @tpoff relocation | |
2899 | if STT_TLS virtual address is ADDRESS. */ | |
2900 | ||
2901 | static bfd_vma | |
2902 | tpoff (struct bfd_link_info *info, bfd_vma address) | |
2903 | { | |
2904 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
2905 | bfd_vma base; | |
2906 | ||
2907 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
2908 | if (htab->tls_sec == NULL) | |
2909 | return 0; | |
2910 | base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power); | |
2911 | return address - htab->tls_sec->vma + base; | |
2912 | } | |
2913 | ||
00a97672 RS |
2914 | /* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA. |
2915 | VALUE is the relocation value. */ | |
2916 | ||
2917 | static bfd_reloc_status_type | |
2918 | elf32_arm_abs12_reloc (bfd *abfd, void *data, bfd_vma value) | |
2919 | { | |
2920 | if (value > 0xfff) | |
2921 | return bfd_reloc_overflow; | |
2922 | ||
2923 | value |= bfd_get_32 (abfd, data) & 0xfffff000; | |
2924 | bfd_put_32 (abfd, value, data); | |
2925 | return bfd_reloc_ok; | |
2926 | } | |
2927 | ||
252b5132 | 2928 | /* Perform a relocation as part of a final link. */ |
9b485d32 | 2929 | |
252b5132 | 2930 | static bfd_reloc_status_type |
57e8b36a NC |
2931 | elf32_arm_final_link_relocate (reloc_howto_type * howto, |
2932 | bfd * input_bfd, | |
2933 | bfd * output_bfd, | |
2934 | asection * input_section, | |
2935 | bfd_byte * contents, | |
2936 | Elf_Internal_Rela * rel, | |
2937 | bfd_vma value, | |
2938 | struct bfd_link_info * info, | |
2939 | asection * sym_sec, | |
2940 | const char * sym_name, | |
2941 | int sym_flags, | |
0945cdfd DJ |
2942 | struct elf_link_hash_entry * h, |
2943 | bfd_boolean * unresolved_reloc_p) | |
252b5132 RH |
2944 | { |
2945 | unsigned long r_type = howto->type; | |
2946 | unsigned long r_symndx; | |
2947 | bfd_byte * hit_data = contents + rel->r_offset; | |
2948 | bfd * dynobj = NULL; | |
2949 | Elf_Internal_Shdr * symtab_hdr; | |
2950 | struct elf_link_hash_entry ** sym_hashes; | |
2951 | bfd_vma * local_got_offsets; | |
2952 | asection * sgot = NULL; | |
2953 | asection * splt = NULL; | |
2954 | asection * sreloc = NULL; | |
252b5132 | 2955 | bfd_vma addend; |
ba96a88f NC |
2956 | bfd_signed_vma signed_addend; |
2957 | struct elf32_arm_link_hash_table * globals; | |
f21f3fe0 | 2958 | |
9c504268 PB |
2959 | globals = elf32_arm_hash_table (info); |
2960 | ||
9c504268 PB |
2961 | /* Some relocation type map to different relocations depending on the |
2962 | target. We pick the right one here. */ | |
eb043451 PB |
2963 | r_type = arm_real_reloc_type (globals, r_type); |
2964 | if (r_type != howto->type) | |
2965 | howto = elf32_arm_howto_from_type (r_type); | |
9c504268 | 2966 | |
cac15327 NC |
2967 | /* If the start address has been set, then set the EF_ARM_HASENTRY |
2968 | flag. Setting this more than once is redundant, but the cost is | |
2969 | not too high, and it keeps the code simple. | |
99e4ae17 | 2970 | |
cac15327 NC |
2971 | The test is done here, rather than somewhere else, because the |
2972 | start address is only set just before the final link commences. | |
2973 | ||
2974 | Note - if the user deliberately sets a start address of 0, the | |
2975 | flag will not be set. */ | |
2976 | if (bfd_get_start_address (output_bfd) != 0) | |
2977 | elf_elfheader (output_bfd)->e_flags |= EF_ARM_HASENTRY; | |
99e4ae17 | 2978 | |
252b5132 RH |
2979 | dynobj = elf_hash_table (info)->dynobj; |
2980 | if (dynobj) | |
2981 | { | |
2982 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
2983 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
2984 | } | |
2985 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; | |
2986 | sym_hashes = elf_sym_hashes (input_bfd); | |
2987 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
2988 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2989 | ||
4e7fd91e | 2990 | if (globals->use_rel) |
ba96a88f | 2991 | { |
4e7fd91e PB |
2992 | addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask; |
2993 | ||
2994 | if (addend & ((howto->src_mask + 1) >> 1)) | |
2995 | { | |
2996 | signed_addend = -1; | |
2997 | signed_addend &= ~ howto->src_mask; | |
2998 | signed_addend |= addend; | |
2999 | } | |
3000 | else | |
3001 | signed_addend = addend; | |
ba96a88f NC |
3002 | } |
3003 | else | |
4e7fd91e | 3004 | addend = signed_addend = rel->r_addend; |
f21f3fe0 | 3005 | |
252b5132 RH |
3006 | switch (r_type) |
3007 | { | |
3008 | case R_ARM_NONE: | |
28a094c2 DJ |
3009 | /* We don't need to find a value for this symbol. It's just a |
3010 | marker. */ | |
3011 | *unresolved_reloc_p = FALSE; | |
252b5132 RH |
3012 | return bfd_reloc_ok; |
3013 | ||
00a97672 RS |
3014 | case R_ARM_ABS12: |
3015 | if (!globals->vxworks_p) | |
3016 | return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend); | |
3017 | ||
252b5132 RH |
3018 | case R_ARM_PC24: |
3019 | case R_ARM_ABS32: | |
3020 | case R_ARM_REL32: | |
5b5bb741 PB |
3021 | case R_ARM_CALL: |
3022 | case R_ARM_JUMP24: | |
dfc5f959 | 3023 | case R_ARM_XPC25: |
eb043451 | 3024 | case R_ARM_PREL31: |
7359ea65 | 3025 | case R_ARM_PLT32: |
5e681ec4 PB |
3026 | /* r_symndx will be zero only for relocs against symbols |
3027 | from removed linkonce sections, or sections discarded by | |
3028 | a linker script. */ | |
3029 | if (r_symndx == 0) | |
3030 | return bfd_reloc_ok; | |
3031 | ||
7359ea65 DJ |
3032 | /* Handle relocations which should use the PLT entry. ABS32/REL32 |
3033 | will use the symbol's value, which may point to a PLT entry, but we | |
3034 | don't need to handle that here. If we created a PLT entry, all | |
3035 | branches in this object should go to it. */ | |
ee06dc07 | 3036 | if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32) |
7359ea65 | 3037 | && h != NULL |
c84cd8ee | 3038 | && splt != NULL |
7359ea65 DJ |
3039 | && h->plt.offset != (bfd_vma) -1) |
3040 | { | |
c84cd8ee DJ |
3041 | /* If we've created a .plt section, and assigned a PLT entry to |
3042 | this function, it should not be known to bind locally. If | |
3043 | it were, we would have cleared the PLT entry. */ | |
7359ea65 DJ |
3044 | BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info, h)); |
3045 | ||
3046 | value = (splt->output_section->vma | |
3047 | + splt->output_offset | |
3048 | + h->plt.offset); | |
0945cdfd | 3049 | *unresolved_reloc_p = FALSE; |
7359ea65 DJ |
3050 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
3051 | contents, rel->r_offset, value, | |
00a97672 | 3052 | rel->r_addend); |
7359ea65 DJ |
3053 | } |
3054 | ||
67687978 PB |
3055 | /* When generating a shared object or relocatable executable, these |
3056 | relocations are copied into the output file to be resolved at | |
3057 | run time. */ | |
3058 | if ((info->shared || globals->root.is_relocatable_executable) | |
7359ea65 | 3059 | && (input_section->flags & SEC_ALLOC) |
ee06dc07 PB |
3060 | && (r_type != R_ARM_REL32 |
3061 | || !SYMBOL_CALLS_LOCAL (info, h)) | |
7359ea65 DJ |
3062 | && (h == NULL |
3063 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
3064 | || h->root.type != bfd_link_hash_undefweak) | |
3065 | && r_type != R_ARM_PC24 | |
5b5bb741 PB |
3066 | && r_type != R_ARM_CALL |
3067 | && r_type != R_ARM_JUMP24 | |
ee06dc07 | 3068 | && r_type != R_ARM_PREL31 |
7359ea65 | 3069 | && r_type != R_ARM_PLT32) |
252b5132 | 3070 | { |
947216bf AM |
3071 | Elf_Internal_Rela outrel; |
3072 | bfd_byte *loc; | |
b34976b6 | 3073 | bfd_boolean skip, relocate; |
f21f3fe0 | 3074 | |
0945cdfd DJ |
3075 | *unresolved_reloc_p = FALSE; |
3076 | ||
252b5132 RH |
3077 | if (sreloc == NULL) |
3078 | { | |
3079 | const char * name; | |
f21f3fe0 | 3080 | |
252b5132 RH |
3081 | name = (bfd_elf_string_from_elf_section |
3082 | (input_bfd, | |
3083 | elf_elfheader (input_bfd)->e_shstrndx, | |
3084 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
3085 | if (name == NULL) | |
3086 | return bfd_reloc_notsupported; | |
f21f3fe0 | 3087 | |
00a97672 | 3088 | BFD_ASSERT (reloc_section_p (globals, name, input_section)); |
f21f3fe0 | 3089 | |
252b5132 RH |
3090 | sreloc = bfd_get_section_by_name (dynobj, name); |
3091 | BFD_ASSERT (sreloc != NULL); | |
3092 | } | |
f21f3fe0 | 3093 | |
b34976b6 AM |
3094 | skip = FALSE; |
3095 | relocate = FALSE; | |
f21f3fe0 | 3096 | |
00a97672 | 3097 | outrel.r_addend = addend; |
c629eae0 JJ |
3098 | outrel.r_offset = |
3099 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
3100 | rel->r_offset); | |
3101 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 3102 | skip = TRUE; |
0bb2d96a | 3103 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 3104 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
3105 | outrel.r_offset += (input_section->output_section->vma |
3106 | + input_section->output_offset); | |
f21f3fe0 | 3107 | |
252b5132 | 3108 | if (skip) |
0bb2d96a | 3109 | memset (&outrel, 0, sizeof outrel); |
5e681ec4 PB |
3110 | else if (h != NULL |
3111 | && h->dynindx != -1 | |
7359ea65 | 3112 | && (!info->shared |
5e681ec4 | 3113 | || !info->symbolic |
f5385ebf | 3114 | || !h->def_regular)) |
5e681ec4 | 3115 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
252b5132 RH |
3116 | else |
3117 | { | |
a16385dc MM |
3118 | int symbol; |
3119 | ||
5e681ec4 | 3120 | /* This symbol is local, or marked to become local. */ |
b7693d02 DJ |
3121 | if (sym_flags == STT_ARM_TFUNC) |
3122 | value |= 1; | |
a16385dc | 3123 | if (globals->symbian_p) |
6366ff1e MM |
3124 | { |
3125 | /* On Symbian OS, the data segment and text segement | |
3126 | can be relocated independently. Therefore, we | |
3127 | must indicate the segment to which this | |
3128 | relocation is relative. The BPABI allows us to | |
3129 | use any symbol in the right segment; we just use | |
3130 | the section symbol as it is convenient. (We | |
3131 | cannot use the symbol given by "h" directly as it | |
3132 | will not appear in the dynamic symbol table.) */ | |
10dbd1f3 NC |
3133 | if (sym_sec) |
3134 | symbol = elf_section_data (sym_sec->output_section)->dynindx; | |
3135 | else | |
3136 | symbol = elf_section_data (input_section->output_section)->dynindx; | |
6366ff1e MM |
3137 | BFD_ASSERT (symbol != 0); |
3138 | } | |
a16385dc MM |
3139 | else |
3140 | /* On SVR4-ish systems, the dynamic loader cannot | |
3141 | relocate the text and data segments independently, | |
3142 | so the symbol does not matter. */ | |
3143 | symbol = 0; | |
3144 | outrel.r_info = ELF32_R_INFO (symbol, R_ARM_RELATIVE); | |
00a97672 RS |
3145 | if (globals->use_rel) |
3146 | relocate = TRUE; | |
3147 | else | |
3148 | outrel.r_addend += value; | |
252b5132 | 3149 | } |
f21f3fe0 | 3150 | |
947216bf | 3151 | loc = sreloc->contents; |
00a97672 RS |
3152 | loc += sreloc->reloc_count++ * RELOC_SIZE (globals); |
3153 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
9a5aca8c | 3154 | |
f21f3fe0 | 3155 | /* If this reloc is against an external symbol, we do not want to |
252b5132 | 3156 | fiddle with the addend. Otherwise, we need to include the symbol |
9b485d32 | 3157 | value so that it becomes an addend for the dynamic reloc. */ |
252b5132 RH |
3158 | if (! relocate) |
3159 | return bfd_reloc_ok; | |
9a5aca8c | 3160 | |
f21f3fe0 | 3161 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
252b5132 RH |
3162 | contents, rel->r_offset, value, |
3163 | (bfd_vma) 0); | |
3164 | } | |
3165 | else switch (r_type) | |
3166 | { | |
00a97672 RS |
3167 | case R_ARM_ABS12: |
3168 | return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend); | |
3169 | ||
dfc5f959 | 3170 | case R_ARM_XPC25: /* Arm BLX instruction. */ |
5b5bb741 PB |
3171 | case R_ARM_CALL: |
3172 | case R_ARM_JUMP24: | |
dfc5f959 | 3173 | case R_ARM_PC24: /* Arm B/BL instruction */ |
7359ea65 | 3174 | case R_ARM_PLT32: |
dfc5f959 | 3175 | if (r_type == R_ARM_XPC25) |
252b5132 | 3176 | { |
dfc5f959 NC |
3177 | /* Check for Arm calling Arm function. */ |
3178 | /* FIXME: Should we translate the instruction into a BL | |
3179 | instruction instead ? */ | |
3180 | if (sym_flags != STT_ARM_TFUNC) | |
d003868e AM |
3181 | (*_bfd_error_handler) |
3182 | (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."), | |
3183 | input_bfd, | |
3184 | h ? h->root.root.string : "(local)"); | |
dfc5f959 | 3185 | } |
39b41c9c | 3186 | else if (r_type != R_ARM_CALL || !globals->use_blx) |
dfc5f959 NC |
3187 | { |
3188 | /* Check for Arm calling Thumb function. */ | |
3189 | if (sym_flags == STT_ARM_TFUNC) | |
3190 | { | |
57e8b36a NC |
3191 | elf32_arm_to_thumb_stub (info, sym_name, input_bfd, |
3192 | output_bfd, input_section, | |
3193 | hit_data, sym_sec, rel->r_offset, | |
dfc5f959 NC |
3194 | signed_addend, value); |
3195 | return bfd_reloc_ok; | |
3196 | } | |
252b5132 | 3197 | } |
ba96a88f | 3198 | |
dea514f5 PB |
3199 | /* The ARM ELF ABI says that this reloc is computed as: S - P + A |
3200 | where: | |
3201 | S is the address of the symbol in the relocation. | |
3202 | P is address of the instruction being relocated. | |
3203 | A is the addend (extracted from the instruction) in bytes. | |
3204 | ||
3205 | S is held in 'value'. | |
3206 | P is the base address of the section containing the | |
3207 | instruction plus the offset of the reloc into that | |
3208 | section, ie: | |
3209 | (input_section->output_section->vma + | |
3210 | input_section->output_offset + | |
3211 | rel->r_offset). | |
3212 | A is the addend, converted into bytes, ie: | |
3213 | (signed_addend * 4) | |
3214 | ||
3215 | Note: None of these operations have knowledge of the pipeline | |
3216 | size of the processor, thus it is up to the assembler to | |
3217 | encode this information into the addend. */ | |
3218 | value -= (input_section->output_section->vma | |
3219 | + input_section->output_offset); | |
3220 | value -= rel->r_offset; | |
4e7fd91e PB |
3221 | if (globals->use_rel) |
3222 | value += (signed_addend << howto->size); | |
3223 | else | |
3224 | /* RELA addends do not have to be adjusted by howto->size. */ | |
3225 | value += signed_addend; | |
23080146 | 3226 | |
dcb5e6e6 NC |
3227 | signed_addend = value; |
3228 | signed_addend >>= howto->rightshift; | |
9a5aca8c | 3229 | |
59f2c4e7 NC |
3230 | /* It is not an error for an undefined weak reference to be |
3231 | out of range. Any program that branches to such a symbol | |
9a5aca8c AM |
3232 | is going to crash anyway, so there is no point worrying |
3233 | about getting the destination exactly right. */ | |
59f2c4e7 NC |
3234 | if (! h || h->root.type != bfd_link_hash_undefweak) |
3235 | { | |
9b485d32 | 3236 | /* Perform a signed range check. */ |
dcb5e6e6 | 3237 | if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1)) |
59f2c4e7 NC |
3238 | || signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1))) |
3239 | return bfd_reloc_overflow; | |
3240 | } | |
9a5aca8c | 3241 | |
39b41c9c PB |
3242 | addend = (value & 2); |
3243 | ||
3244 | value = (signed_addend & howto->dst_mask) | |
3245 | | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask)); | |
3246 | ||
3247 | /* Set the H bit in the BLX instruction. */ | |
3248 | if (sym_flags == STT_ARM_TFUNC) | |
3249 | { | |
3250 | if (addend) | |
3251 | value |= (1 << 24); | |
3252 | else | |
3253 | value &= ~(bfd_vma)(1 << 24); | |
3254 | } | |
3255 | if (r_type == R_ARM_CALL) | |
3256 | { | |
3257 | /* Select the correct instruction (BL or BLX). */ | |
3258 | if (sym_flags == STT_ARM_TFUNC) | |
3259 | value |= (1 << 28); | |
3260 | else | |
3261 | { | |
3262 | value &= ~(bfd_vma)(1 << 28); | |
3263 | value |= (1 << 24); | |
3264 | } | |
3265 | } | |
252b5132 | 3266 | break; |
f21f3fe0 | 3267 | |
252b5132 RH |
3268 | case R_ARM_ABS32: |
3269 | value += addend; | |
3270 | if (sym_flags == STT_ARM_TFUNC) | |
3271 | value |= 1; | |
3272 | break; | |
f21f3fe0 | 3273 | |
252b5132 RH |
3274 | case R_ARM_REL32: |
3275 | value -= (input_section->output_section->vma | |
62efb346 | 3276 | + input_section->output_offset + rel->r_offset); |
252b5132 RH |
3277 | value += addend; |
3278 | break; | |
eb043451 | 3279 | |
eb043451 PB |
3280 | case R_ARM_PREL31: |
3281 | value -= (input_section->output_section->vma | |
3282 | + input_section->output_offset + rel->r_offset); | |
3283 | value += signed_addend; | |
3284 | if (! h || h->root.type != bfd_link_hash_undefweak) | |
3285 | { | |
3286 | /* Check for overflow */ | |
3287 | if ((value ^ (value >> 1)) & (1 << 30)) | |
3288 | return bfd_reloc_overflow; | |
3289 | } | |
3290 | value &= 0x7fffffff; | |
3291 | value |= (bfd_get_32 (input_bfd, hit_data) & 0x80000000); | |
3292 | if (sym_flags == STT_ARM_TFUNC) | |
3293 | value |= 1; | |
3294 | break; | |
252b5132 | 3295 | } |
f21f3fe0 | 3296 | |
252b5132 RH |
3297 | bfd_put_32 (input_bfd, value, hit_data); |
3298 | return bfd_reloc_ok; | |
3299 | ||
3300 | case R_ARM_ABS8: | |
3301 | value += addend; | |
3302 | if ((long) value > 0x7f || (long) value < -0x80) | |
3303 | return bfd_reloc_overflow; | |
3304 | ||
3305 | bfd_put_8 (input_bfd, value, hit_data); | |
3306 | return bfd_reloc_ok; | |
3307 | ||
3308 | case R_ARM_ABS16: | |
3309 | value += addend; | |
3310 | ||
3311 | if ((long) value > 0x7fff || (long) value < -0x8000) | |
3312 | return bfd_reloc_overflow; | |
3313 | ||
3314 | bfd_put_16 (input_bfd, value, hit_data); | |
3315 | return bfd_reloc_ok; | |
3316 | ||
252b5132 | 3317 | case R_ARM_THM_ABS5: |
9b485d32 | 3318 | /* Support ldr and str instructions for the thumb. */ |
4e7fd91e PB |
3319 | if (globals->use_rel) |
3320 | { | |
3321 | /* Need to refetch addend. */ | |
3322 | addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask; | |
3323 | /* ??? Need to determine shift amount from operand size. */ | |
3324 | addend >>= howto->rightshift; | |
3325 | } | |
252b5132 RH |
3326 | value += addend; |
3327 | ||
3328 | /* ??? Isn't value unsigned? */ | |
3329 | if ((long) value > 0x1f || (long) value < -0x10) | |
3330 | return bfd_reloc_overflow; | |
3331 | ||
3332 | /* ??? Value needs to be properly shifted into place first. */ | |
3333 | value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f; | |
3334 | bfd_put_16 (input_bfd, value, hit_data); | |
3335 | return bfd_reloc_ok; | |
3336 | ||
dfc5f959 | 3337 | case R_ARM_THM_XPC22: |
c19d1205 | 3338 | case R_ARM_THM_CALL: |
dfc5f959 | 3339 | /* Thumb BL (branch long instruction). */ |
252b5132 | 3340 | { |
b34976b6 AM |
3341 | bfd_vma relocation; |
3342 | bfd_boolean overflow = FALSE; | |
3343 | bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); | |
3344 | bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); | |
df212a7e | 3345 | bfd_signed_vma reloc_signed_max = ((1 << (howto->bitsize - 1)) - 1) >> howto->rightshift; |
ba96a88f | 3346 | bfd_signed_vma reloc_signed_min = ~ reloc_signed_max; |
b34976b6 | 3347 | bfd_vma check; |
252b5132 | 3348 | bfd_signed_vma signed_check; |
252b5132 | 3349 | |
252b5132 RH |
3350 | /* Need to refetch the addend and squish the two 11 bit pieces |
3351 | together. */ | |
4e7fd91e PB |
3352 | if (globals->use_rel) |
3353 | { | |
3354 | bfd_vma upper = upper_insn & 0x7ff; | |
3355 | bfd_vma lower = lower_insn & 0x7ff; | |
3356 | upper = (upper ^ 0x400) - 0x400; /* Sign extend. */ | |
3357 | addend = (upper << 12) | (lower << 1); | |
3358 | signed_addend = addend; | |
3359 | } | |
cb1afa5c | 3360 | |
dfc5f959 NC |
3361 | if (r_type == R_ARM_THM_XPC22) |
3362 | { | |
3363 | /* Check for Thumb to Thumb call. */ | |
3364 | /* FIXME: Should we translate the instruction into a BL | |
3365 | instruction instead ? */ | |
3366 | if (sym_flags == STT_ARM_TFUNC) | |
d003868e AM |
3367 | (*_bfd_error_handler) |
3368 | (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."), | |
3369 | input_bfd, | |
3370 | h ? h->root.root.string : "(local)"); | |
dfc5f959 NC |
3371 | } |
3372 | else | |
252b5132 | 3373 | { |
dfc5f959 NC |
3374 | /* If it is not a call to Thumb, assume call to Arm. |
3375 | If it is a call relative to a section name, then it is not a | |
b7693d02 DJ |
3376 | function call at all, but rather a long jump. Calls through |
3377 | the PLT do not require stubs. */ | |
3378 | if (sym_flags != STT_ARM_TFUNC && sym_flags != STT_SECTION | |
3379 | && (h == NULL || splt == NULL | |
3380 | || h->plt.offset == (bfd_vma) -1)) | |
dfc5f959 | 3381 | { |
39b41c9c PB |
3382 | if (globals->use_blx) |
3383 | { | |
3384 | /* Convert BL to BLX. */ | |
3385 | lower_insn = (lower_insn & ~0x1000) | 0x0800; | |
3386 | } | |
3387 | else if (elf32_thumb_to_arm_stub | |
dfc5f959 NC |
3388 | (info, sym_name, input_bfd, output_bfd, input_section, |
3389 | hit_data, sym_sec, rel->r_offset, signed_addend, value)) | |
3390 | return bfd_reloc_ok; | |
3391 | else | |
3392 | return bfd_reloc_dangerous; | |
3393 | } | |
39b41c9c PB |
3394 | else if (sym_flags == STT_ARM_TFUNC && globals->use_blx) |
3395 | { | |
3396 | /* Make sure this is a BL. */ | |
3397 | lower_insn |= 0x1800; | |
3398 | } | |
252b5132 | 3399 | } |
f21f3fe0 | 3400 | |
b7693d02 DJ |
3401 | /* Handle calls via the PLT. */ |
3402 | if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1) | |
3403 | { | |
3404 | value = (splt->output_section->vma | |
3405 | + splt->output_offset | |
3406 | + h->plt.offset); | |
33bfe774 JB |
3407 | if (globals->use_blx) |
3408 | { | |
3409 | /* If the Thumb BLX instruction is available, convert the | |
3410 | BL to a BLX instruction to call the ARM-mode PLT entry. */ | |
39b41c9c | 3411 | lower_insn = (lower_insn & ~0x1000) | 0x0800; |
33bfe774 JB |
3412 | } |
3413 | else | |
3414 | /* Target the Thumb stub before the ARM PLT entry. */ | |
3415 | value -= PLT_THUMB_STUB_SIZE; | |
0945cdfd | 3416 | *unresolved_reloc_p = FALSE; |
b7693d02 DJ |
3417 | } |
3418 | ||
ba96a88f | 3419 | relocation = value + signed_addend; |
f21f3fe0 | 3420 | |
252b5132 | 3421 | relocation -= (input_section->output_section->vma |
ba96a88f NC |
3422 | + input_section->output_offset |
3423 | + rel->r_offset); | |
9a5aca8c | 3424 | |
252b5132 RH |
3425 | check = relocation >> howto->rightshift; |
3426 | ||
3427 | /* If this is a signed value, the rightshift just dropped | |
3428 | leading 1 bits (assuming twos complement). */ | |
3429 | if ((bfd_signed_vma) relocation >= 0) | |
3430 | signed_check = check; | |
3431 | else | |
3432 | signed_check = check | ~((bfd_vma) -1 >> howto->rightshift); | |
3433 | ||
252b5132 | 3434 | /* Assumes two's complement. */ |
ba96a88f | 3435 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) |
b34976b6 | 3436 | overflow = TRUE; |
252b5132 | 3437 | |
39b41c9c | 3438 | if ((lower_insn & 0x1800) == 0x0800) |
c62e1cc3 NC |
3439 | /* For a BLX instruction, make sure that the relocation is rounded up |
3440 | to a word boundary. This follows the semantics of the instruction | |
3441 | which specifies that bit 1 of the target address will come from bit | |
3442 | 1 of the base address. */ | |
3443 | relocation = (relocation + 2) & ~ 3; | |
cb1afa5c | 3444 | |
c62e1cc3 NC |
3445 | /* Put RELOCATION back into the insn. */ |
3446 | upper_insn = (upper_insn & ~(bfd_vma) 0x7ff) | ((relocation >> 12) & 0x7ff); | |
3447 | lower_insn = (lower_insn & ~(bfd_vma) 0x7ff) | ((relocation >> 1) & 0x7ff); | |
3448 | ||
252b5132 RH |
3449 | /* Put the relocated value back in the object file: */ |
3450 | bfd_put_16 (input_bfd, upper_insn, hit_data); | |
3451 | bfd_put_16 (input_bfd, lower_insn, hit_data + 2); | |
3452 | ||
3453 | return (overflow ? bfd_reloc_overflow : bfd_reloc_ok); | |
3454 | } | |
3455 | break; | |
3456 | ||
c19d1205 ZW |
3457 | case R_ARM_THM_JUMP24: |
3458 | /* Thumb32 unconditional branch instruction. */ | |
3459 | { | |
3460 | bfd_vma relocation; | |
3461 | bfd_boolean overflow = FALSE; | |
3462 | bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); | |
3463 | bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); | |
3464 | bfd_signed_vma reloc_signed_max = ((1 << (howto->bitsize - 1)) - 1) >> howto->rightshift; | |
3465 | bfd_signed_vma reloc_signed_min = ~ reloc_signed_max; | |
3466 | bfd_vma check; | |
3467 | bfd_signed_vma signed_check; | |
3468 | ||
3469 | /* Need to refetch the addend, reconstruct the top three bits, and glue the | |
3470 | two pieces together. */ | |
3471 | if (globals->use_rel) | |
3472 | { | |
3473 | bfd_vma S = (upper_insn & 0x0400) >> 10; | |
3474 | bfd_vma hi = (upper_insn & 0x03ff); | |
3475 | bfd_vma I1 = (lower_insn & 0x2000) >> 13; | |
3476 | bfd_vma I2 = (lower_insn & 0x0800) >> 11; | |
3477 | bfd_vma lo = (lower_insn & 0x07ff); | |
3478 | ||
3479 | I1 = !(I1 ^ S); | |
3480 | I2 = !(I2 ^ S); | |
3481 | S = !S; | |
3482 | ||
3483 | signed_addend = (S << 24) | (I1 << 23) | (I2 << 22) | (hi << 12) | (lo << 1); | |
3484 | signed_addend -= (1 << 24); /* Sign extend. */ | |
3485 | } | |
3486 | ||
3487 | /* ??? Should handle interworking? GCC might someday try to | |
3488 | use this for tail calls. */ | |
3489 | ||
3490 | relocation = value + signed_addend; | |
3491 | relocation -= (input_section->output_section->vma | |
3492 | + input_section->output_offset | |
3493 | + rel->r_offset); | |
3494 | ||
3495 | check = relocation >> howto->rightshift; | |
3496 | ||
3497 | /* If this is a signed value, the rightshift just dropped | |
3498 | leading 1 bits (assuming twos complement). */ | |
3499 | if ((bfd_signed_vma) relocation >= 0) | |
3500 | signed_check = check; | |
3501 | else | |
3502 | signed_check = check | ~((bfd_vma) -1 >> howto->rightshift); | |
3503 | ||
3504 | /* Assumes two's complement. */ | |
3505 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) | |
3506 | overflow = TRUE; | |
3507 | ||
3508 | /* Put RELOCATION back into the insn. */ | |
3509 | { | |
3510 | bfd_vma S = (relocation & 0x01000000) >> 24; | |
3511 | bfd_vma I1 = (relocation & 0x00800000) >> 23; | |
3512 | bfd_vma I2 = (relocation & 0x00400000) >> 22; | |
3513 | bfd_vma hi = (relocation & 0x003ff000) >> 12; | |
3514 | bfd_vma lo = (relocation & 0x00000ffe) >> 1; | |
3515 | ||
3516 | I1 = !(I1 ^ S); | |
3517 | I2 = !(I2 ^ S); | |
3518 | ||
3519 | upper_insn = (upper_insn & (bfd_vma) 0xf800) | (S << 10) | hi; | |
3520 | lower_insn = (lower_insn & (bfd_vma) 0xd000) | (I1 << 13) | (I2 << 11) | lo; | |
3521 | } | |
3522 | ||
3523 | /* Put the relocated value back in the object file: */ | |
3524 | bfd_put_16 (input_bfd, upper_insn, hit_data); | |
3525 | bfd_put_16 (input_bfd, lower_insn, hit_data + 2); | |
3526 | ||
3527 | return (overflow ? bfd_reloc_overflow : bfd_reloc_ok); | |
3528 | } | |
3529 | ||
3530 | case R_ARM_THM_JUMP19: | |
3531 | /* Thumb32 conditional branch instruction. */ | |
3532 | { | |
3533 | bfd_vma relocation; | |
3534 | bfd_boolean overflow = FALSE; | |
3535 | bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); | |
3536 | bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); | |
3537 | bfd_signed_vma reloc_signed_max = ((1 << (howto->bitsize - 1)) - 1) >> howto->rightshift; | |
3538 | bfd_signed_vma reloc_signed_min = ~ reloc_signed_max; | |
3539 | bfd_vma check; | |
3540 | bfd_signed_vma signed_check; | |
3541 | ||
3542 | /* Need to refetch the addend, reconstruct the top three bits, | |
3543 | and squish the two 11 bit pieces together. */ | |
3544 | if (globals->use_rel) | |
3545 | { | |
3546 | bfd_vma S = (upper_insn & 0x0400) >> 10; | |
3547 | bfd_vma upper = (upper_insn & 0x001f); | |
3548 | bfd_vma J1 = (lower_insn & 0x2000) >> 13; | |
3549 | bfd_vma J2 = (lower_insn & 0x0800) >> 11; | |
3550 | bfd_vma lower = (lower_insn & 0x07ff); | |
3551 | ||
3552 | upper |= J2 << 6; | |
3553 | upper |= J1 << 7; | |
3554 | upper |= ~S << 8; | |
3555 | upper -= 0x0100; /* Sign extend. */ | |
3556 | ||
3557 | addend = (upper << 12) | (lower << 1); | |
3558 | signed_addend = addend; | |
3559 | } | |
3560 | ||
3561 | /* ??? Should handle interworking? GCC might someday try to | |
3562 | use this for tail calls. */ | |
3563 | ||
3564 | relocation = value + signed_addend; | |
3565 | relocation -= (input_section->output_section->vma | |
3566 | + input_section->output_offset | |
3567 | + rel->r_offset); | |
3568 | ||
3569 | check = relocation >> howto->rightshift; | |
3570 | ||
3571 | /* If this is a signed value, the rightshift just dropped | |
3572 | leading 1 bits (assuming twos complement). */ | |
3573 | if ((bfd_signed_vma) relocation >= 0) | |
3574 | signed_check = check; | |
3575 | else | |
3576 | signed_check = check | ~((bfd_vma) -1 >> howto->rightshift); | |
3577 | ||
3578 | /* Assumes two's complement. */ | |
3579 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) | |
3580 | overflow = TRUE; | |
3581 | ||
3582 | /* Put RELOCATION back into the insn. */ | |
3583 | { | |
3584 | bfd_vma S = (relocation & 0x00100000) >> 20; | |
3585 | bfd_vma J2 = (relocation & 0x00080000) >> 19; | |
3586 | bfd_vma J1 = (relocation & 0x00040000) >> 18; | |
3587 | bfd_vma hi = (relocation & 0x0003f000) >> 12; | |
3588 | bfd_vma lo = (relocation & 0x00000ffe) >> 1; | |
3589 | ||
3590 | upper_insn = (upper_insn & 0xfb30) | (S << 10) | hi; | |
3591 | lower_insn = (lower_insn & 0xd000) | (J1 << 13) | (J2 << 11) | lo; | |
3592 | } | |
3593 | ||
3594 | /* Put the relocated value back in the object file: */ | |
3595 | bfd_put_16 (input_bfd, upper_insn, hit_data); | |
3596 | bfd_put_16 (input_bfd, lower_insn, hit_data + 2); | |
3597 | ||
3598 | return (overflow ? bfd_reloc_overflow : bfd_reloc_ok); | |
3599 | } | |
3600 | ||
3601 | case R_ARM_THM_JUMP11: | |
3602 | case R_ARM_THM_JUMP8: | |
3603 | case R_ARM_THM_JUMP6: | |
51c5503b NC |
3604 | /* Thumb B (branch) instruction). */ |
3605 | { | |
6cf9e9fe | 3606 | bfd_signed_vma relocation; |
51c5503b NC |
3607 | bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1; |
3608 | bfd_signed_vma reloc_signed_min = ~ reloc_signed_max; | |
51c5503b NC |
3609 | bfd_signed_vma signed_check; |
3610 | ||
c19d1205 ZW |
3611 | /* CZB cannot jump backward. */ |
3612 | if (r_type == R_ARM_THM_JUMP6) | |
3613 | reloc_signed_min = 0; | |
3614 | ||
4e7fd91e | 3615 | if (globals->use_rel) |
6cf9e9fe | 3616 | { |
4e7fd91e PB |
3617 | /* Need to refetch addend. */ |
3618 | addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask; | |
3619 | if (addend & ((howto->src_mask + 1) >> 1)) | |
3620 | { | |
3621 | signed_addend = -1; | |
3622 | signed_addend &= ~ howto->src_mask; | |
3623 | signed_addend |= addend; | |
3624 | } | |
3625 | else | |
3626 | signed_addend = addend; | |
3627 | /* The value in the insn has been right shifted. We need to | |
3628 | undo this, so that we can perform the address calculation | |
3629 | in terms of bytes. */ | |
3630 | signed_addend <<= howto->rightshift; | |
6cf9e9fe | 3631 | } |
6cf9e9fe | 3632 | relocation = value + signed_addend; |
51c5503b NC |
3633 | |
3634 | relocation -= (input_section->output_section->vma | |
3635 | + input_section->output_offset | |
3636 | + rel->r_offset); | |
3637 | ||
6cf9e9fe NC |
3638 | relocation >>= howto->rightshift; |
3639 | signed_check = relocation; | |
c19d1205 ZW |
3640 | |
3641 | if (r_type == R_ARM_THM_JUMP6) | |
3642 | relocation = ((relocation & 0x0020) << 4) | ((relocation & 0x001f) << 3); | |
3643 | else | |
3644 | relocation &= howto->dst_mask; | |
51c5503b | 3645 | relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask)); |
cedb70c5 | 3646 | |
51c5503b NC |
3647 | bfd_put_16 (input_bfd, relocation, hit_data); |
3648 | ||
3649 | /* Assumes two's complement. */ | |
3650 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) | |
3651 | return bfd_reloc_overflow; | |
3652 | ||
3653 | return bfd_reloc_ok; | |
3654 | } | |
cedb70c5 | 3655 | |
8375c36b PB |
3656 | case R_ARM_ALU_PCREL7_0: |
3657 | case R_ARM_ALU_PCREL15_8: | |
3658 | case R_ARM_ALU_PCREL23_15: | |
3659 | { | |
3660 | bfd_vma insn; | |
3661 | bfd_vma relocation; | |
3662 | ||
3663 | insn = bfd_get_32 (input_bfd, hit_data); | |
4e7fd91e PB |
3664 | if (globals->use_rel) |
3665 | { | |
3666 | /* Extract the addend. */ | |
3667 | addend = (insn & 0xff) << ((insn & 0xf00) >> 7); | |
3668 | signed_addend = addend; | |
3669 | } | |
8375c36b PB |
3670 | relocation = value + signed_addend; |
3671 | ||
3672 | relocation -= (input_section->output_section->vma | |
3673 | + input_section->output_offset | |
3674 | + rel->r_offset); | |
3675 | insn = (insn & ~0xfff) | |
3676 | | ((howto->bitpos << 7) & 0xf00) | |
3677 | | ((relocation >> howto->bitpos) & 0xff); | |
3678 | bfd_put_32 (input_bfd, value, hit_data); | |
3679 | } | |
3680 | return bfd_reloc_ok; | |
3681 | ||
252b5132 RH |
3682 | case R_ARM_GNU_VTINHERIT: |
3683 | case R_ARM_GNU_VTENTRY: | |
3684 | return bfd_reloc_ok; | |
3685 | ||
c19d1205 | 3686 | case R_ARM_GOTOFF32: |
252b5132 RH |
3687 | /* Relocation is relative to the start of the |
3688 | global offset table. */ | |
3689 | ||
3690 | BFD_ASSERT (sgot != NULL); | |
3691 | if (sgot == NULL) | |
3692 | return bfd_reloc_notsupported; | |
9a5aca8c | 3693 | |
cedb70c5 | 3694 | /* If we are addressing a Thumb function, we need to adjust the |
ee29b9fb RE |
3695 | address by one, so that attempts to call the function pointer will |
3696 | correctly interpret it as Thumb code. */ | |
3697 | if (sym_flags == STT_ARM_TFUNC) | |
3698 | value += 1; | |
3699 | ||
252b5132 RH |
3700 | /* Note that sgot->output_offset is not involved in this |
3701 | calculation. We always want the start of .got. If we | |
3702 | define _GLOBAL_OFFSET_TABLE in a different way, as is | |
3703 | permitted by the ABI, we might have to change this | |
9b485d32 | 3704 | calculation. */ |
252b5132 | 3705 | value -= sgot->output_section->vma; |
f21f3fe0 | 3706 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 | 3707 | contents, rel->r_offset, value, |
00a97672 | 3708 | rel->r_addend); |
252b5132 RH |
3709 | |
3710 | case R_ARM_GOTPC: | |
a7c10850 | 3711 | /* Use global offset table as symbol value. */ |
252b5132 | 3712 | BFD_ASSERT (sgot != NULL); |
f21f3fe0 | 3713 | |
252b5132 RH |
3714 | if (sgot == NULL) |
3715 | return bfd_reloc_notsupported; | |
3716 | ||
0945cdfd | 3717 | *unresolved_reloc_p = FALSE; |
252b5132 | 3718 | value = sgot->output_section->vma; |
f21f3fe0 | 3719 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 | 3720 | contents, rel->r_offset, value, |
00a97672 | 3721 | rel->r_addend); |
f21f3fe0 | 3722 | |
252b5132 | 3723 | case R_ARM_GOT32: |
eb043451 | 3724 | case R_ARM_GOT_PREL: |
252b5132 | 3725 | /* Relocation is to the entry for this symbol in the |
9b485d32 | 3726 | global offset table. */ |
252b5132 RH |
3727 | if (sgot == NULL) |
3728 | return bfd_reloc_notsupported; | |
f21f3fe0 | 3729 | |
252b5132 RH |
3730 | if (h != NULL) |
3731 | { | |
3732 | bfd_vma off; | |
5e681ec4 | 3733 | bfd_boolean dyn; |
f21f3fe0 | 3734 | |
252b5132 RH |
3735 | off = h->got.offset; |
3736 | BFD_ASSERT (off != (bfd_vma) -1); | |
5e681ec4 | 3737 | dyn = globals->root.dynamic_sections_created; |
f21f3fe0 | 3738 | |
5e681ec4 | 3739 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
50d6c878 | 3740 | || (info->shared |
5e681ec4 PB |
3741 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
3742 | || (ELF_ST_VISIBILITY (h->other) | |
3743 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
3744 | { |
3745 | /* This is actually a static link, or it is a -Bsymbolic link | |
3746 | and the symbol is defined locally. We must initialize this | |
3747 | entry in the global offset table. Since the offset must | |
3748 | always be a multiple of 4, we use the least significant bit | |
3749 | to record whether we have initialized it already. | |
f21f3fe0 | 3750 | |
00a97672 | 3751 | When doing a dynamic link, we create a .rel(a).got relocation |
f21f3fe0 | 3752 | entry to initialize the value. This is done in the |
9b485d32 | 3753 | finish_dynamic_symbol routine. */ |
252b5132 RH |
3754 | if ((off & 1) != 0) |
3755 | off &= ~1; | |
3756 | else | |
3757 | { | |
ee29b9fb RE |
3758 | /* If we are addressing a Thumb function, we need to |
3759 | adjust the address by one, so that attempts to | |
3760 | call the function pointer will correctly | |
3761 | interpret it as Thumb code. */ | |
3762 | if (sym_flags == STT_ARM_TFUNC) | |
3763 | value |= 1; | |
3764 | ||
252b5132 RH |
3765 | bfd_put_32 (output_bfd, value, sgot->contents + off); |
3766 | h->got.offset |= 1; | |
3767 | } | |
3768 | } | |
0945cdfd DJ |
3769 | else |
3770 | *unresolved_reloc_p = FALSE; | |
f21f3fe0 | 3771 | |
252b5132 RH |
3772 | value = sgot->output_offset + off; |
3773 | } | |
3774 | else | |
3775 | { | |
3776 | bfd_vma off; | |
f21f3fe0 | 3777 | |
252b5132 RH |
3778 | BFD_ASSERT (local_got_offsets != NULL && |
3779 | local_got_offsets[r_symndx] != (bfd_vma) -1); | |
f21f3fe0 | 3780 | |
252b5132 | 3781 | off = local_got_offsets[r_symndx]; |
f21f3fe0 | 3782 | |
252b5132 RH |
3783 | /* The offset must always be a multiple of 4. We use the |
3784 | least significant bit to record whether we have already | |
9b485d32 | 3785 | generated the necessary reloc. */ |
252b5132 RH |
3786 | if ((off & 1) != 0) |
3787 | off &= ~1; | |
3788 | else | |
3789 | { | |
b7693d02 DJ |
3790 | /* If we are addressing a Thumb function, we need to |
3791 | adjust the address by one, so that attempts to | |
3792 | call the function pointer will correctly | |
3793 | interpret it as Thumb code. */ | |
3794 | if (sym_flags == STT_ARM_TFUNC) | |
3795 | value |= 1; | |
3796 | ||
00a97672 RS |
3797 | if (globals->use_rel) |
3798 | bfd_put_32 (output_bfd, value, sgot->contents + off); | |
f21f3fe0 | 3799 | |
252b5132 RH |
3800 | if (info->shared) |
3801 | { | |
3802 | asection * srelgot; | |
947216bf AM |
3803 | Elf_Internal_Rela outrel; |
3804 | bfd_byte *loc; | |
f21f3fe0 | 3805 | |
00a97672 RS |
3806 | srelgot = (bfd_get_section_by_name |
3807 | (dynobj, RELOC_SECTION (globals, ".got"))); | |
252b5132 | 3808 | BFD_ASSERT (srelgot != NULL); |
f21f3fe0 | 3809 | |
00a97672 | 3810 | outrel.r_addend = addend + value; |
252b5132 | 3811 | outrel.r_offset = (sgot->output_section->vma |
f21f3fe0 | 3812 | + sgot->output_offset |
252b5132 RH |
3813 | + off); |
3814 | outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); | |
947216bf | 3815 | loc = srelgot->contents; |
00a97672 RS |
3816 | loc += srelgot->reloc_count++ * RELOC_SIZE (globals); |
3817 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
252b5132 | 3818 | } |
f21f3fe0 | 3819 | |
252b5132 RH |
3820 | local_got_offsets[r_symndx] |= 1; |
3821 | } | |
f21f3fe0 | 3822 | |
252b5132 RH |
3823 | value = sgot->output_offset + off; |
3824 | } | |
eb043451 PB |
3825 | if (r_type != R_ARM_GOT32) |
3826 | value += sgot->output_section->vma; | |
9a5aca8c | 3827 | |
f21f3fe0 | 3828 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 | 3829 | contents, rel->r_offset, value, |
00a97672 | 3830 | rel->r_addend); |
f21f3fe0 | 3831 | |
ba93b8ac DJ |
3832 | case R_ARM_TLS_LDO32: |
3833 | value = value - dtpoff_base (info); | |
3834 | ||
3835 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
00a97672 RS |
3836 | contents, rel->r_offset, value, |
3837 | rel->r_addend); | |
ba93b8ac DJ |
3838 | |
3839 | case R_ARM_TLS_LDM32: | |
3840 | { | |
3841 | bfd_vma off; | |
3842 | ||
3843 | if (globals->sgot == NULL) | |
3844 | abort (); | |
3845 | ||
3846 | off = globals->tls_ldm_got.offset; | |
3847 | ||
3848 | if ((off & 1) != 0) | |
3849 | off &= ~1; | |
3850 | else | |
3851 | { | |
3852 | /* If we don't know the module number, create a relocation | |
3853 | for it. */ | |
3854 | if (info->shared) | |
3855 | { | |
3856 | Elf_Internal_Rela outrel; | |
3857 | bfd_byte *loc; | |
3858 | ||
3859 | if (globals->srelgot == NULL) | |
3860 | abort (); | |
3861 | ||
00a97672 | 3862 | outrel.r_addend = 0; |
ba93b8ac DJ |
3863 | outrel.r_offset = (globals->sgot->output_section->vma |
3864 | + globals->sgot->output_offset + off); | |
3865 | outrel.r_info = ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32); | |
3866 | ||
00a97672 RS |
3867 | if (globals->use_rel) |
3868 | bfd_put_32 (output_bfd, outrel.r_addend, | |
3869 | globals->sgot->contents + off); | |
ba93b8ac DJ |
3870 | |
3871 | loc = globals->srelgot->contents; | |
00a97672 RS |
3872 | loc += globals->srelgot->reloc_count++ * RELOC_SIZE (globals); |
3873 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
ba93b8ac DJ |
3874 | } |
3875 | else | |
3876 | bfd_put_32 (output_bfd, 1, globals->sgot->contents + off); | |
3877 | ||
3878 | globals->tls_ldm_got.offset |= 1; | |
3879 | } | |
3880 | ||
3881 | value = globals->sgot->output_section->vma + globals->sgot->output_offset + off | |
3882 | - (input_section->output_section->vma + input_section->output_offset + rel->r_offset); | |
3883 | ||
3884 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3885 | contents, rel->r_offset, value, | |
00a97672 | 3886 | rel->r_addend); |
ba93b8ac DJ |
3887 | } |
3888 | ||
3889 | case R_ARM_TLS_GD32: | |
3890 | case R_ARM_TLS_IE32: | |
3891 | { | |
3892 | bfd_vma off; | |
3893 | int indx; | |
3894 | char tls_type; | |
3895 | ||
3896 | if (globals->sgot == NULL) | |
3897 | abort (); | |
3898 | ||
3899 | indx = 0; | |
3900 | if (h != NULL) | |
3901 | { | |
3902 | bfd_boolean dyn; | |
3903 | dyn = globals->root.dynamic_sections_created; | |
3904 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
3905 | && (!info->shared | |
3906 | || !SYMBOL_REFERENCES_LOCAL (info, h))) | |
3907 | { | |
3908 | *unresolved_reloc_p = FALSE; | |
3909 | indx = h->dynindx; | |
3910 | } | |
3911 | off = h->got.offset; | |
3912 | tls_type = ((struct elf32_arm_link_hash_entry *) h)->tls_type; | |
3913 | } | |
3914 | else | |
3915 | { | |
3916 | if (local_got_offsets == NULL) | |
3917 | abort (); | |
3918 | off = local_got_offsets[r_symndx]; | |
3919 | tls_type = elf32_arm_local_got_tls_type (input_bfd)[r_symndx]; | |
3920 | } | |
3921 | ||
3922 | if (tls_type == GOT_UNKNOWN) | |
3923 | abort (); | |
3924 | ||
3925 | if ((off & 1) != 0) | |
3926 | off &= ~1; | |
3927 | else | |
3928 | { | |
3929 | bfd_boolean need_relocs = FALSE; | |
3930 | Elf_Internal_Rela outrel; | |
3931 | bfd_byte *loc = NULL; | |
3932 | int cur_off = off; | |
3933 | ||
3934 | /* The GOT entries have not been initialized yet. Do it | |
3935 | now, and emit any relocations. If both an IE GOT and a | |
3936 | GD GOT are necessary, we emit the GD first. */ | |
3937 | ||
3938 | if ((info->shared || indx != 0) | |
3939 | && (h == NULL | |
3940 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
3941 | || h->root.type != bfd_link_hash_undefweak)) | |
3942 | { | |
3943 | need_relocs = TRUE; | |
3944 | if (globals->srelgot == NULL) | |
3945 | abort (); | |
3946 | loc = globals->srelgot->contents; | |
00a97672 | 3947 | loc += globals->srelgot->reloc_count * RELOC_SIZE (globals); |
ba93b8ac DJ |
3948 | } |
3949 | ||
3950 | if (tls_type & GOT_TLS_GD) | |
3951 | { | |
3952 | if (need_relocs) | |
3953 | { | |
00a97672 | 3954 | outrel.r_addend = 0; |
ba93b8ac | 3955 | outrel.r_offset = (globals->sgot->output_section->vma |
00a97672 RS |
3956 | + globals->sgot->output_offset |
3957 | + cur_off); | |
ba93b8ac | 3958 | outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DTPMOD32); |
ba93b8ac | 3959 | |
00a97672 RS |
3960 | if (globals->use_rel) |
3961 | bfd_put_32 (output_bfd, outrel.r_addend, | |
3962 | globals->sgot->contents + cur_off); | |
3963 | ||
3964 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
ba93b8ac | 3965 | globals->srelgot->reloc_count++; |
00a97672 | 3966 | loc += RELOC_SIZE (globals); |
ba93b8ac DJ |
3967 | |
3968 | if (indx == 0) | |
3969 | bfd_put_32 (output_bfd, value - dtpoff_base (info), | |
3970 | globals->sgot->contents + cur_off + 4); | |
3971 | else | |
3972 | { | |
00a97672 | 3973 | outrel.r_addend = 0; |
ba93b8ac DJ |
3974 | outrel.r_info = ELF32_R_INFO (indx, |
3975 | R_ARM_TLS_DTPOFF32); | |
3976 | outrel.r_offset += 4; | |
00a97672 RS |
3977 | |
3978 | if (globals->use_rel) | |
3979 | bfd_put_32 (output_bfd, outrel.r_addend, | |
3980 | globals->sgot->contents + cur_off + 4); | |
3981 | ||
3982 | ||
3983 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
ba93b8ac | 3984 | globals->srelgot->reloc_count++; |
00a97672 | 3985 | loc += RELOC_SIZE (globals); |
ba93b8ac DJ |
3986 | } |
3987 | } | |
3988 | else | |
3989 | { | |
3990 | /* If we are not emitting relocations for a | |
3991 | general dynamic reference, then we must be in a | |
3992 | static link or an executable link with the | |
3993 | symbol binding locally. Mark it as belonging | |
3994 | to module 1, the executable. */ | |
3995 | bfd_put_32 (output_bfd, 1, | |
3996 | globals->sgot->contents + cur_off); | |
3997 | bfd_put_32 (output_bfd, value - dtpoff_base (info), | |
3998 | globals->sgot->contents + cur_off + 4); | |
3999 | } | |
4000 | ||
4001 | cur_off += 8; | |
4002 | } | |
4003 | ||
4004 | if (tls_type & GOT_TLS_IE) | |
4005 | { | |
4006 | if (need_relocs) | |
4007 | { | |
00a97672 RS |
4008 | if (indx == 0) |
4009 | outrel.r_addend = value - dtpoff_base (info); | |
4010 | else | |
4011 | outrel.r_addend = 0; | |
ba93b8ac DJ |
4012 | outrel.r_offset = (globals->sgot->output_section->vma |
4013 | + globals->sgot->output_offset | |
4014 | + cur_off); | |
4015 | outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_TPOFF32); | |
4016 | ||
00a97672 RS |
4017 | if (globals->use_rel) |
4018 | bfd_put_32 (output_bfd, outrel.r_addend, | |
ba93b8ac DJ |
4019 | globals->sgot->contents + cur_off); |
4020 | ||
00a97672 | 4021 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); |
ba93b8ac | 4022 | globals->srelgot->reloc_count++; |
00a97672 | 4023 | loc += RELOC_SIZE (globals); |
ba93b8ac DJ |
4024 | } |
4025 | else | |
4026 | bfd_put_32 (output_bfd, tpoff (info, value), | |
4027 | globals->sgot->contents + cur_off); | |
4028 | cur_off += 4; | |
4029 | } | |
4030 | ||
4031 | if (h != NULL) | |
4032 | h->got.offset |= 1; | |
4033 | else | |
4034 | local_got_offsets[r_symndx] |= 1; | |
4035 | } | |
4036 | ||
4037 | if ((tls_type & GOT_TLS_GD) && r_type != R_ARM_TLS_GD32) | |
4038 | off += 8; | |
4039 | value = globals->sgot->output_section->vma + globals->sgot->output_offset + off | |
4040 | - (input_section->output_section->vma + input_section->output_offset + rel->r_offset); | |
4041 | ||
4042 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
4043 | contents, rel->r_offset, value, | |
00a97672 | 4044 | rel->r_addend); |
ba93b8ac DJ |
4045 | } |
4046 | ||
4047 | case R_ARM_TLS_LE32: | |
4048 | if (info->shared) | |
4049 | { | |
4050 | (*_bfd_error_handler) | |
4051 | (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"), | |
4052 | input_bfd, input_section, | |
4053 | (long) rel->r_offset, howto->name); | |
4054 | return FALSE; | |
4055 | } | |
4056 | else | |
4057 | value = tpoff (info, value); | |
4058 | ||
4059 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
00a97672 RS |
4060 | contents, rel->r_offset, value, |
4061 | rel->r_addend); | |
ba93b8ac | 4062 | |
319850b4 JB |
4063 | case R_ARM_V4BX: |
4064 | if (globals->fix_v4bx) | |
4065 | { | |
4066 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
4067 | ||
4068 | /* Ensure that we have a BX instruction. */ | |
4069 | BFD_ASSERT ((insn & 0x0ffffff0) == 0x012fff10); | |
4070 | ||
4071 | /* Preserve Rm (lowest four bits) and the condition code | |
4072 | (highest four bits). Other bits encode MOV PC,Rm. */ | |
4073 | insn = (insn & 0xf000000f) | 0x01a0f000; | |
4074 | ||
4075 | bfd_put_32 (input_bfd, insn, hit_data); | |
4076 | } | |
4077 | return bfd_reloc_ok; | |
4078 | ||
252b5132 RH |
4079 | default: |
4080 | return bfd_reloc_notsupported; | |
4081 | } | |
4082 | } | |
4083 | ||
ee065d83 PB |
4084 | |
4085 | static int | |
4086 | uleb128_size (unsigned int i) | |
4087 | { | |
4088 | int size; | |
4089 | size = 1; | |
4090 | while (i >= 0x80) | |
4091 | { | |
4092 | i >>= 7; | |
4093 | size++; | |
4094 | } | |
4095 | return size; | |
4096 | } | |
4097 | ||
4098 | /* Return TRUE if the attribute has the default value (0/""). */ | |
4099 | static bfd_boolean | |
4100 | is_default_attr (aeabi_attribute *attr) | |
4101 | { | |
4102 | if ((attr->type & 1) && attr->i != 0) | |
4103 | return FALSE; | |
4104 | if ((attr->type & 2) && attr->s && *attr->s) | |
4105 | return FALSE; | |
4106 | ||
4107 | return TRUE; | |
4108 | } | |
4109 | ||
4110 | /* Return the size of a single attribute. */ | |
4111 | static bfd_vma | |
4112 | eabi_attr_size(int tag, aeabi_attribute *attr) | |
4113 | { | |
4114 | bfd_vma size; | |
4115 | ||
4116 | if (is_default_attr (attr)) | |
4117 | return 0; | |
4118 | ||
4119 | size = uleb128_size (tag); | |
4120 | if (attr->type & 1) | |
4121 | size += uleb128_size (attr->i); | |
4122 | if (attr->type & 2) | |
4123 | size += strlen ((char *)attr->s) + 1; | |
4124 | return size; | |
4125 | } | |
4126 | ||
4127 | /* Returns the size of the eabi object attributess section. */ | |
4128 | bfd_vma | |
4129 | elf32_arm_eabi_attr_size (bfd *abfd) | |
4130 | { | |
4131 | bfd_vma size; | |
4132 | aeabi_attribute *attr; | |
4133 | aeabi_attribute_list *list; | |
4134 | int i; | |
4135 | ||
4136 | attr = elf32_arm_tdata (abfd)->known_eabi_attributes; | |
4137 | size = 16; /* 'A' <size> "aeabi" 0x1 <size>. */ | |
4138 | for (i = 4; i < NUM_KNOWN_ATTRIBUTES; i++) | |
4139 | size += eabi_attr_size (i, &attr[i]); | |
4140 | ||
4141 | for (list = elf32_arm_tdata (abfd)->other_eabi_attributes; | |
4142 | list; | |
4143 | list = list->next) | |
4144 | size += eabi_attr_size (list->tag, &list->attr); | |
4145 | ||
4146 | return size; | |
4147 | } | |
4148 | ||
4149 | static bfd_byte * | |
4150 | write_uleb128 (bfd_byte *p, unsigned int val) | |
4151 | { | |
4152 | bfd_byte c; | |
4153 | do | |
4154 | { | |
4155 | c = val & 0x7f; | |
4156 | val >>= 7; | |
4157 | if (val) | |
4158 | c |= 0x80; | |
4159 | *(p++) = c; | |
4160 | } | |
4161 | while (val); | |
4162 | return p; | |
4163 | } | |
4164 | ||
4165 | /* Write attribute ATTR to butter P, and return a pointer to the following | |
4166 | byte. */ | |
4167 | static bfd_byte * | |
4168 | write_eabi_attribute (bfd_byte *p, int tag, aeabi_attribute *attr) | |
4169 | { | |
4170 | /* Suppress default entries. */ | |
4171 | if (is_default_attr(attr)) | |
4172 | return p; | |
4173 | ||
4174 | p = write_uleb128 (p, tag); | |
4175 | if (attr->type & 1) | |
4176 | p = write_uleb128 (p, attr->i); | |
4177 | if (attr->type & 2) | |
4178 | { | |
4179 | int len; | |
4180 | ||
4181 | len = strlen (attr->s) + 1; | |
4182 | memcpy (p, attr->s, len); | |
4183 | p += len; | |
4184 | } | |
4185 | ||
4186 | return p; | |
4187 | } | |
4188 | ||
4189 | /* Write the contents of the eabi attributes section to p. */ | |
4190 | void | |
4191 | elf32_arm_set_eabi_attr_contents (bfd *abfd, bfd_byte *contents, bfd_vma size) | |
4192 | { | |
4193 | bfd_byte *p; | |
4194 | aeabi_attribute *attr; | |
4195 | aeabi_attribute_list *list; | |
4196 | int i; | |
4197 | ||
4198 | p = contents; | |
4199 | *(p++) = 'A'; | |
4200 | bfd_put_32 (abfd, size - 1, p); | |
4201 | p += 4; | |
4202 | memcpy (p, "aeabi", 6); | |
4203 | p += 6; | |
4204 | *(p++) = Tag_File; | |
4205 | bfd_put_32 (abfd, size - 11, p); | |
4206 | p += 4; | |
4207 | ||
4208 | attr = elf32_arm_tdata (abfd)->known_eabi_attributes; | |
4209 | for (i = 4; i < NUM_KNOWN_ATTRIBUTES; i++) | |
4210 | p = write_eabi_attribute (p, i, &attr[i]); | |
4211 | ||
4212 | for (list = elf32_arm_tdata (abfd)->other_eabi_attributes; | |
4213 | list; | |
4214 | list = list->next) | |
4215 | p = write_eabi_attribute (p, list->tag, &list->attr); | |
4216 | } | |
4217 | ||
4218 | /* Override final_link to handle EABI object attribute sections. */ | |
4219 | ||
4220 | static bfd_boolean | |
4221 | elf32_arm_bfd_final_link (bfd *abfd, struct bfd_link_info *info) | |
4222 | { | |
4223 | asection *o; | |
4224 | struct bfd_link_order *p; | |
4225 | asection *attr_section = NULL; | |
4226 | bfd_byte *contents; | |
4227 | bfd_vma size = 0; | |
4228 | ||
4229 | /* elf32_arm_merge_private_bfd_data will already have merged the | |
4230 | object attributes. Remove the input sections from the link, and set | |
4231 | the contents of the output secton. */ | |
4232 | for (o = abfd->sections; o != NULL; o = o->next) | |
4233 | { | |
4234 | if (strcmp (o->name, ".ARM.attributes") == 0) | |
4235 | { | |
4236 | for (p = o->map_head.link_order; p != NULL; p = p->next) | |
4237 | { | |
4238 | asection *input_section; | |
4239 | ||
4240 | if (p->type != bfd_indirect_link_order) | |
4241 | continue; | |
4242 | input_section = p->u.indirect.section; | |
4243 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
4244 | elf_link_input_bfd ignores this section. */ | |
4245 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
4246 | } | |
4247 | ||
4248 | size = elf32_arm_eabi_attr_size (abfd); | |
4249 | bfd_set_section_size (abfd, o, size); | |
4250 | attr_section = o; | |
4251 | /* Skip this section later on. */ | |
4252 | o->map_head.link_order = NULL; | |
4253 | } | |
4254 | } | |
4255 | /* Invoke the ELF linker to do all the work. */ | |
4256 | if (!bfd_elf_final_link (abfd, info)) | |
4257 | return FALSE; | |
4258 | ||
4259 | if (attr_section) | |
4260 | { | |
4261 | contents = bfd_malloc(size); | |
4262 | if (contents == NULL) | |
4263 | return FALSE; | |
4264 | elf32_arm_set_eabi_attr_contents (abfd, contents, size); | |
4265 | bfd_set_section_contents (abfd, attr_section, contents, 0, size); | |
4266 | free (contents); | |
4267 | } | |
4268 | return TRUE; | |
4269 | } | |
4270 | ||
4271 | ||
98c1d4aa NC |
4272 | /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */ |
4273 | static void | |
57e8b36a NC |
4274 | arm_add_to_rel (bfd * abfd, |
4275 | bfd_byte * address, | |
4276 | reloc_howto_type * howto, | |
4277 | bfd_signed_vma increment) | |
98c1d4aa | 4278 | { |
98c1d4aa NC |
4279 | bfd_signed_vma addend; |
4280 | ||
c19d1205 | 4281 | if (howto->type == R_ARM_THM_CALL) |
98c1d4aa | 4282 | { |
9a5aca8c AM |
4283 | int upper_insn, lower_insn; |
4284 | int upper, lower; | |
98c1d4aa | 4285 | |
9a5aca8c AM |
4286 | upper_insn = bfd_get_16 (abfd, address); |
4287 | lower_insn = bfd_get_16 (abfd, address + 2); | |
4288 | upper = upper_insn & 0x7ff; | |
4289 | lower = lower_insn & 0x7ff; | |
4290 | ||
4291 | addend = (upper << 12) | (lower << 1); | |
ddda4409 | 4292 | addend += increment; |
9a5aca8c | 4293 | addend >>= 1; |
98c1d4aa | 4294 | |
9a5aca8c AM |
4295 | upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff); |
4296 | lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff); | |
4297 | ||
dc810e39 AM |
4298 | bfd_put_16 (abfd, (bfd_vma) upper_insn, address); |
4299 | bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2); | |
9a5aca8c AM |
4300 | } |
4301 | else | |
4302 | { | |
4303 | bfd_vma contents; | |
4304 | ||
4305 | contents = bfd_get_32 (abfd, address); | |
4306 | ||
4307 | /* Get the (signed) value from the instruction. */ | |
4308 | addend = contents & howto->src_mask; | |
4309 | if (addend & ((howto->src_mask + 1) >> 1)) | |
4310 | { | |
4311 | bfd_signed_vma mask; | |
4312 | ||
4313 | mask = -1; | |
4314 | mask &= ~ howto->src_mask; | |
4315 | addend |= mask; | |
4316 | } | |
4317 | ||
4318 | /* Add in the increment, (which is a byte value). */ | |
4319 | switch (howto->type) | |
4320 | { | |
4321 | default: | |
4322 | addend += increment; | |
4323 | break; | |
4324 | ||
4325 | case R_ARM_PC24: | |
c6596c5e | 4326 | case R_ARM_PLT32: |
5b5bb741 PB |
4327 | case R_ARM_CALL: |
4328 | case R_ARM_JUMP24: | |
9a5aca8c | 4329 | addend <<= howto->size; |
dc810e39 | 4330 | addend += increment; |
9a5aca8c AM |
4331 | |
4332 | /* Should we check for overflow here ? */ | |
4333 | ||
4334 | /* Drop any undesired bits. */ | |
4335 | addend >>= howto->rightshift; | |
4336 | break; | |
4337 | } | |
4338 | ||
4339 | contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask); | |
4340 | ||
4341 | bfd_put_32 (abfd, contents, address); | |
ddda4409 | 4342 | } |
98c1d4aa | 4343 | } |
252b5132 | 4344 | |
ba93b8ac DJ |
4345 | #define IS_ARM_TLS_RELOC(R_TYPE) \ |
4346 | ((R_TYPE) == R_ARM_TLS_GD32 \ | |
4347 | || (R_TYPE) == R_ARM_TLS_LDO32 \ | |
4348 | || (R_TYPE) == R_ARM_TLS_LDM32 \ | |
4349 | || (R_TYPE) == R_ARM_TLS_DTPOFF32 \ | |
4350 | || (R_TYPE) == R_ARM_TLS_DTPMOD32 \ | |
4351 | || (R_TYPE) == R_ARM_TLS_TPOFF32 \ | |
4352 | || (R_TYPE) == R_ARM_TLS_LE32 \ | |
4353 | || (R_TYPE) == R_ARM_TLS_IE32) | |
4354 | ||
252b5132 | 4355 | /* Relocate an ARM ELF section. */ |
b34976b6 | 4356 | static bfd_boolean |
57e8b36a NC |
4357 | elf32_arm_relocate_section (bfd * output_bfd, |
4358 | struct bfd_link_info * info, | |
4359 | bfd * input_bfd, | |
4360 | asection * input_section, | |
4361 | bfd_byte * contents, | |
4362 | Elf_Internal_Rela * relocs, | |
4363 | Elf_Internal_Sym * local_syms, | |
4364 | asection ** local_sections) | |
252b5132 | 4365 | { |
b34976b6 AM |
4366 | Elf_Internal_Shdr *symtab_hdr; |
4367 | struct elf_link_hash_entry **sym_hashes; | |
4368 | Elf_Internal_Rela *rel; | |
4369 | Elf_Internal_Rela *relend; | |
4370 | const char *name; | |
b32d3aa2 | 4371 | struct elf32_arm_link_hash_table * globals; |
252b5132 | 4372 | |
4e7fd91e PB |
4373 | globals = elf32_arm_hash_table (info); |
4374 | if (info->relocatable && !globals->use_rel) | |
b34976b6 | 4375 | return TRUE; |
b491616a | 4376 | |
252b5132 RH |
4377 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; |
4378 | sym_hashes = elf_sym_hashes (input_bfd); | |
4379 | ||
4380 | rel = relocs; | |
4381 | relend = relocs + input_section->reloc_count; | |
4382 | for (; rel < relend; rel++) | |
4383 | { | |
ba96a88f NC |
4384 | int r_type; |
4385 | reloc_howto_type * howto; | |
4386 | unsigned long r_symndx; | |
4387 | Elf_Internal_Sym * sym; | |
4388 | asection * sec; | |
252b5132 | 4389 | struct elf_link_hash_entry * h; |
ba96a88f NC |
4390 | bfd_vma relocation; |
4391 | bfd_reloc_status_type r; | |
4392 | arelent bfd_reloc; | |
ba93b8ac | 4393 | char sym_type; |
0945cdfd | 4394 | bfd_boolean unresolved_reloc = FALSE; |
f21f3fe0 | 4395 | |
252b5132 | 4396 | r_symndx = ELF32_R_SYM (rel->r_info); |
ba96a88f | 4397 | r_type = ELF32_R_TYPE (rel->r_info); |
b32d3aa2 | 4398 | r_type = arm_real_reloc_type (globals, r_type); |
252b5132 | 4399 | |
ba96a88f NC |
4400 | if ( r_type == R_ARM_GNU_VTENTRY |
4401 | || r_type == R_ARM_GNU_VTINHERIT) | |
252b5132 RH |
4402 | continue; |
4403 | ||
b32d3aa2 | 4404 | bfd_reloc.howto = elf32_arm_howto_from_type (r_type); |
ba96a88f | 4405 | howto = bfd_reloc.howto; |
252b5132 | 4406 | |
4e7fd91e | 4407 | if (info->relocatable && globals->use_rel) |
252b5132 | 4408 | { |
1049f94e | 4409 | /* This is a relocatable link. We don't have to change |
252b5132 RH |
4410 | anything, unless the reloc is against a section symbol, |
4411 | in which case we have to adjust according to where the | |
4412 | section symbol winds up in the output section. */ | |
4413 | if (r_symndx < symtab_hdr->sh_info) | |
4414 | { | |
4415 | sym = local_syms + r_symndx; | |
4416 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
4417 | { | |
4418 | sec = local_sections[r_symndx]; | |
98c1d4aa | 4419 | arm_add_to_rel (input_bfd, contents + rel->r_offset, |
dc810e39 AM |
4420 | howto, |
4421 | (bfd_signed_vma) (sec->output_offset | |
4422 | + sym->st_value)); | |
252b5132 RH |
4423 | } |
4424 | } | |
4425 | ||
4426 | continue; | |
4427 | } | |
4428 | ||
4429 | /* This is a final link. */ | |
4430 | h = NULL; | |
4431 | sym = NULL; | |
4432 | sec = NULL; | |
9b485d32 | 4433 | |
252b5132 RH |
4434 | if (r_symndx < symtab_hdr->sh_info) |
4435 | { | |
4436 | sym = local_syms + r_symndx; | |
ba93b8ac | 4437 | sym_type = ELF32_ST_TYPE (sym->st_info); |
252b5132 | 4438 | sec = local_sections[r_symndx]; |
4e7fd91e | 4439 | if (globals->use_rel) |
f8df10f4 | 4440 | { |
4e7fd91e PB |
4441 | relocation = (sec->output_section->vma |
4442 | + sec->output_offset | |
4443 | + sym->st_value); | |
4444 | if ((sec->flags & SEC_MERGE) | |
4445 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
f8df10f4 | 4446 | { |
4e7fd91e PB |
4447 | asection *msec; |
4448 | bfd_vma addend, value; | |
4449 | ||
4450 | if (howto->rightshift) | |
4451 | { | |
4452 | (*_bfd_error_handler) | |
4453 | (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"), | |
4454 | input_bfd, input_section, | |
4455 | (long) rel->r_offset, howto->name); | |
4456 | return FALSE; | |
4457 | } | |
f8df10f4 | 4458 | |
4e7fd91e | 4459 | value = bfd_get_32 (input_bfd, contents + rel->r_offset); |
f8df10f4 | 4460 | |
4e7fd91e PB |
4461 | /* Get the (signed) value from the instruction. */ |
4462 | addend = value & howto->src_mask; | |
4463 | if (addend & ((howto->src_mask + 1) >> 1)) | |
4464 | { | |
4465 | bfd_signed_vma mask; | |
f8df10f4 | 4466 | |
4e7fd91e PB |
4467 | mask = -1; |
4468 | mask &= ~ howto->src_mask; | |
4469 | addend |= mask; | |
4470 | } | |
4471 | msec = sec; | |
4472 | addend = | |
4473 | _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend) | |
4474 | - relocation; | |
4475 | addend += msec->output_section->vma + msec->output_offset; | |
4476 | value = (value & ~ howto->dst_mask) | (addend & howto->dst_mask); | |
4477 | bfd_put_32 (input_bfd, value, contents + rel->r_offset); | |
f8df10f4 | 4478 | } |
f8df10f4 | 4479 | } |
4e7fd91e PB |
4480 | else |
4481 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
252b5132 RH |
4482 | } |
4483 | else | |
4484 | { | |
560e09e9 | 4485 | bfd_boolean warned; |
560e09e9 | 4486 | |
b2a8e766 AM |
4487 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
4488 | r_symndx, symtab_hdr, sym_hashes, | |
4489 | h, sec, relocation, | |
4490 | unresolved_reloc, warned); | |
ba93b8ac DJ |
4491 | |
4492 | sym_type = h->type; | |
252b5132 RH |
4493 | } |
4494 | ||
4495 | if (h != NULL) | |
4496 | name = h->root.root.string; | |
4497 | else | |
4498 | { | |
4499 | name = (bfd_elf_string_from_elf_section | |
4500 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
4501 | if (name == NULL || *name == '\0') | |
4502 | name = bfd_section_name (input_bfd, sec); | |
4503 | } | |
f21f3fe0 | 4504 | |
ba93b8ac DJ |
4505 | if (r_symndx != 0 |
4506 | && r_type != R_ARM_NONE | |
4507 | && (h == NULL | |
4508 | || h->root.type == bfd_link_hash_defined | |
4509 | || h->root.type == bfd_link_hash_defweak) | |
4510 | && IS_ARM_TLS_RELOC (r_type) != (sym_type == STT_TLS)) | |
4511 | { | |
4512 | (*_bfd_error_handler) | |
4513 | ((sym_type == STT_TLS | |
4514 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") | |
4515 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")), | |
4516 | input_bfd, | |
4517 | input_section, | |
4518 | (long) rel->r_offset, | |
4519 | howto->name, | |
4520 | name); | |
4521 | } | |
4522 | ||
252b5132 RH |
4523 | r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd, |
4524 | input_section, contents, rel, | |
4525 | relocation, info, sec, name, | |
4526 | (h ? ELF_ST_TYPE (h->type) : | |
0945cdfd DJ |
4527 | ELF_ST_TYPE (sym->st_info)), h, |
4528 | &unresolved_reloc); | |
4529 | ||
4530 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections | |
4531 | because such sections are not SEC_ALLOC and thus ld.so will | |
4532 | not process them. */ | |
4533 | if (unresolved_reloc | |
4534 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
4535 | && h->def_dynamic)) | |
4536 | { | |
4537 | (*_bfd_error_handler) | |
843fe662 L |
4538 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
4539 | input_bfd, | |
4540 | input_section, | |
4541 | (long) rel->r_offset, | |
4542 | howto->name, | |
4543 | h->root.root.string); | |
0945cdfd DJ |
4544 | return FALSE; |
4545 | } | |
252b5132 RH |
4546 | |
4547 | if (r != bfd_reloc_ok) | |
4548 | { | |
4549 | const char * msg = (const char *) 0; | |
4550 | ||
4551 | switch (r) | |
4552 | { | |
4553 | case bfd_reloc_overflow: | |
cf919dfd PB |
4554 | /* If the overflowing reloc was to an undefined symbol, |
4555 | we have already printed one error message and there | |
4556 | is no point complaining again. */ | |
4557 | if ((! h || | |
4558 | h->root.type != bfd_link_hash_undefined) | |
4559 | && (!((*info->callbacks->reloc_overflow) | |
dfeffb9f L |
4560 | (info, (h ? &h->root : NULL), name, howto->name, |
4561 | (bfd_vma) 0, input_bfd, input_section, | |
4562 | rel->r_offset)))) | |
b34976b6 | 4563 | return FALSE; |
252b5132 RH |
4564 | break; |
4565 | ||
4566 | case bfd_reloc_undefined: | |
4567 | if (!((*info->callbacks->undefined_symbol) | |
4568 | (info, name, input_bfd, input_section, | |
b34976b6 AM |
4569 | rel->r_offset, TRUE))) |
4570 | return FALSE; | |
252b5132 RH |
4571 | break; |
4572 | ||
4573 | case bfd_reloc_outofrange: | |
9b485d32 | 4574 | msg = _("internal error: out of range error"); |
252b5132 RH |
4575 | goto common_error; |
4576 | ||
4577 | case bfd_reloc_notsupported: | |
9b485d32 | 4578 | msg = _("internal error: unsupported relocation error"); |
252b5132 RH |
4579 | goto common_error; |
4580 | ||
4581 | case bfd_reloc_dangerous: | |
9b485d32 | 4582 | msg = _("internal error: dangerous error"); |
252b5132 RH |
4583 | goto common_error; |
4584 | ||
4585 | default: | |
9b485d32 | 4586 | msg = _("internal error: unknown error"); |
252b5132 RH |
4587 | /* fall through */ |
4588 | ||
4589 | common_error: | |
4590 | if (!((*info->callbacks->warning) | |
4591 | (info, msg, name, input_bfd, input_section, | |
4592 | rel->r_offset))) | |
b34976b6 | 4593 | return FALSE; |
252b5132 RH |
4594 | break; |
4595 | } | |
4596 | } | |
4597 | } | |
4598 | ||
b34976b6 | 4599 | return TRUE; |
252b5132 RH |
4600 | } |
4601 | ||
ee065d83 PB |
4602 | /* Allocate/find an object attribute. */ |
4603 | static aeabi_attribute * | |
4604 | elf32_arm_new_eabi_attr (bfd *abfd, int tag) | |
4605 | { | |
4606 | aeabi_attribute *attr; | |
4607 | aeabi_attribute_list *list; | |
4608 | aeabi_attribute_list *p; | |
4609 | aeabi_attribute_list **lastp; | |
4610 | ||
4611 | ||
4612 | if (tag < NUM_KNOWN_ATTRIBUTES) | |
4613 | { | |
4614 | /* Knwon tags are preallocated. */ | |
4615 | attr = &elf32_arm_tdata (abfd)->known_eabi_attributes[tag]; | |
4616 | } | |
4617 | else | |
4618 | { | |
4619 | /* Create a new tag. */ | |
4620 | list = (aeabi_attribute_list *) | |
4621 | bfd_alloc (abfd, sizeof (aeabi_attribute_list)); | |
4622 | memset (list, 0, sizeof (aeabi_attribute_list)); | |
4623 | list->tag = tag; | |
4624 | /* Keep the tag list in order. */ | |
4625 | lastp = &elf32_arm_tdata (abfd)->other_eabi_attributes; | |
4626 | for (p = *lastp; p; p = p->next) | |
4627 | { | |
4628 | if (tag < p->tag) | |
4629 | break; | |
4630 | lastp = &p->next; | |
4631 | } | |
4632 | list->next = *lastp; | |
4633 | *lastp = list; | |
4634 | attr = &list->attr; | |
4635 | } | |
4636 | ||
4637 | return attr; | |
4638 | } | |
4639 | ||
39b41c9c PB |
4640 | int |
4641 | elf32_arm_get_eabi_attr_int (bfd *abfd, int tag) | |
4642 | { | |
4643 | aeabi_attribute_list *p; | |
4644 | ||
4645 | if (tag < NUM_KNOWN_ATTRIBUTES) | |
4646 | { | |
4647 | /* Knwon tags are preallocated. */ | |
4648 | return elf32_arm_tdata (abfd)->known_eabi_attributes[tag].i; | |
4649 | } | |
4650 | else | |
4651 | { | |
4652 | for (p = elf32_arm_tdata (abfd)->other_eabi_attributes; | |
4653 | p; | |
4654 | p = p->next) | |
4655 | { | |
4656 | if (tag == p->tag) | |
4657 | return p->attr.i; | |
4658 | if (tag < p->tag) | |
4659 | break; | |
4660 | } | |
4661 | return 0; | |
4662 | } | |
4663 | } | |
4664 | ||
ee065d83 PB |
4665 | void |
4666 | elf32_arm_add_eabi_attr_int (bfd *abfd, int tag, unsigned int i) | |
4667 | { | |
4668 | aeabi_attribute *attr; | |
4669 | ||
4670 | attr = elf32_arm_new_eabi_attr (abfd, tag); | |
4671 | attr->type = 1; | |
4672 | attr->i = i; | |
4673 | } | |
4674 | ||
4675 | static char * | |
4676 | attr_strdup (bfd *abfd, const char * s) | |
4677 | { | |
4678 | char * p; | |
4679 | int len; | |
4680 | ||
4681 | len = strlen (s) + 1; | |
4682 | p = (char *)bfd_alloc(abfd, len); | |
4683 | return memcpy (p, s, len); | |
4684 | } | |
4685 | ||
4686 | void | |
4687 | elf32_arm_add_eabi_attr_string (bfd *abfd, int tag, const char *s) | |
4688 | { | |
4689 | aeabi_attribute *attr; | |
4690 | ||
4691 | attr = elf32_arm_new_eabi_attr (abfd, tag); | |
4692 | attr->type = 2; | |
4693 | attr->s = attr_strdup (abfd, s); | |
4694 | } | |
4695 | ||
4696 | void | |
4697 | elf32_arm_add_eabi_attr_compat (bfd *abfd, unsigned int i, const char *s) | |
4698 | { | |
4699 | aeabi_attribute_list *list; | |
4700 | aeabi_attribute_list *p; | |
4701 | aeabi_attribute_list **lastp; | |
4702 | ||
4703 | list = (aeabi_attribute_list *) | |
4704 | bfd_alloc (abfd, sizeof (aeabi_attribute_list)); | |
4705 | memset (list, 0, sizeof (aeabi_attribute_list)); | |
4706 | list->tag = Tag_compatibility; | |
4707 | list->attr.type = 3; | |
4708 | list->attr.i = i; | |
4709 | list->attr.s = attr_strdup (abfd, s); | |
4710 | ||
4711 | lastp = &elf32_arm_tdata (abfd)->other_eabi_attributes; | |
4712 | for (p = *lastp; p; p = p->next) | |
4713 | { | |
4714 | int cmp; | |
4715 | if (p->tag != Tag_compatibility) | |
4716 | break; | |
4717 | cmp = strcmp(s, p->attr.s); | |
4718 | if (cmp < 0 || (cmp == 0 && i < p->attr.i)) | |
4719 | break; | |
4720 | lastp = &p->next; | |
4721 | } | |
4722 | list->next = *lastp; | |
4723 | *lastp = list; | |
4724 | } | |
4725 | ||
c178919b NC |
4726 | /* Set the right machine number. */ |
4727 | ||
4728 | static bfd_boolean | |
57e8b36a | 4729 | elf32_arm_object_p (bfd *abfd) |
c178919b | 4730 | { |
5a6c6817 | 4731 | unsigned int mach; |
57e8b36a | 4732 | |
5a6c6817 | 4733 | mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION); |
c178919b | 4734 | |
5a6c6817 NC |
4735 | if (mach != bfd_mach_arm_unknown) |
4736 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach); | |
4737 | ||
4738 | else if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT) | |
4739 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_ep9312); | |
e16bb312 | 4740 | |
e16bb312 | 4741 | else |
5a6c6817 | 4742 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach); |
c178919b NC |
4743 | |
4744 | return TRUE; | |
4745 | } | |
4746 | ||
fc830a83 | 4747 | /* Function to keep ARM specific flags in the ELF header. */ |
3c9458e9 | 4748 | |
b34976b6 | 4749 | static bfd_boolean |
57e8b36a | 4750 | elf32_arm_set_private_flags (bfd *abfd, flagword flags) |
252b5132 RH |
4751 | { |
4752 | if (elf_flags_init (abfd) | |
4753 | && elf_elfheader (abfd)->e_flags != flags) | |
4754 | { | |
fc830a83 NC |
4755 | if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN) |
4756 | { | |
fd2ec330 | 4757 | if (flags & EF_ARM_INTERWORK) |
d003868e AM |
4758 | (*_bfd_error_handler) |
4759 | (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"), | |
4760 | abfd); | |
fc830a83 | 4761 | else |
d003868e AM |
4762 | _bfd_error_handler |
4763 | (_("Warning: Clearing the interworking flag of %B due to outside request"), | |
4764 | abfd); | |
fc830a83 | 4765 | } |
252b5132 RH |
4766 | } |
4767 | else | |
4768 | { | |
4769 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 | 4770 | elf_flags_init (abfd) = TRUE; |
252b5132 RH |
4771 | } |
4772 | ||
b34976b6 | 4773 | return TRUE; |
252b5132 RH |
4774 | } |
4775 | ||
ee065d83 PB |
4776 | /* Copy the eabi object attribute from IBFD to OBFD. */ |
4777 | static void | |
4778 | copy_eabi_attributes (bfd *ibfd, bfd *obfd) | |
4779 | { | |
4780 | aeabi_attribute *in_attr; | |
4781 | aeabi_attribute *out_attr; | |
4782 | aeabi_attribute_list *list; | |
4783 | int i; | |
4784 | ||
4785 | in_attr = elf32_arm_tdata (ibfd)->known_eabi_attributes; | |
4786 | out_attr = elf32_arm_tdata (obfd)->known_eabi_attributes; | |
4787 | for (i = 4; i < NUM_KNOWN_ATTRIBUTES; i++) | |
4788 | { | |
4789 | out_attr->i = in_attr->i; | |
4790 | if (in_attr->s && *in_attr->s) | |
4791 | out_attr->s = attr_strdup (obfd, in_attr->s); | |
4792 | in_attr++; | |
4793 | out_attr++; | |
4794 | } | |
4795 | ||
4796 | for (list = elf32_arm_tdata (ibfd)->other_eabi_attributes; | |
4797 | list; | |
4798 | list = list->next) | |
4799 | { | |
4800 | in_attr = &list->attr; | |
4801 | switch (in_attr->type) | |
4802 | { | |
4803 | case 1: | |
4804 | elf32_arm_add_eabi_attr_int (obfd, list->tag, in_attr->i); | |
4805 | break; | |
4806 | case 2: | |
4807 | elf32_arm_add_eabi_attr_string (obfd, list->tag, in_attr->s); | |
4808 | break; | |
4809 | case 3: | |
4810 | elf32_arm_add_eabi_attr_compat (obfd, in_attr->i, in_attr->s); | |
4811 | break; | |
4812 | default: | |
4813 | abort(); | |
4814 | } | |
4815 | } | |
4816 | } | |
4817 | ||
4818 | ||
fc830a83 | 4819 | /* Copy backend specific data from one object module to another. */ |
9b485d32 | 4820 | |
b34976b6 | 4821 | static bfd_boolean |
57e8b36a | 4822 | elf32_arm_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
252b5132 RH |
4823 | { |
4824 | flagword in_flags; | |
4825 | flagword out_flags; | |
4826 | ||
fc830a83 | 4827 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
252b5132 | 4828 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
b34976b6 | 4829 | return TRUE; |
252b5132 | 4830 | |
fc830a83 | 4831 | in_flags = elf_elfheader (ibfd)->e_flags; |
252b5132 RH |
4832 | out_flags = elf_elfheader (obfd)->e_flags; |
4833 | ||
fc830a83 NC |
4834 | if (elf_flags_init (obfd) |
4835 | && EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN | |
4836 | && in_flags != out_flags) | |
252b5132 | 4837 | { |
252b5132 | 4838 | /* Cannot mix APCS26 and APCS32 code. */ |
fd2ec330 | 4839 | if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26)) |
b34976b6 | 4840 | return FALSE; |
252b5132 RH |
4841 | |
4842 | /* Cannot mix float APCS and non-float APCS code. */ | |
fd2ec330 | 4843 | if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT)) |
b34976b6 | 4844 | return FALSE; |
252b5132 RH |
4845 | |
4846 | /* If the src and dest have different interworking flags | |
4847 | then turn off the interworking bit. */ | |
fd2ec330 | 4848 | if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK)) |
252b5132 | 4849 | { |
fd2ec330 | 4850 | if (out_flags & EF_ARM_INTERWORK) |
d003868e AM |
4851 | _bfd_error_handler |
4852 | (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"), | |
4853 | obfd, ibfd); | |
252b5132 | 4854 | |
fd2ec330 | 4855 | in_flags &= ~EF_ARM_INTERWORK; |
252b5132 | 4856 | } |
1006ba19 PB |
4857 | |
4858 | /* Likewise for PIC, though don't warn for this case. */ | |
fd2ec330 PB |
4859 | if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC)) |
4860 | in_flags &= ~EF_ARM_PIC; | |
252b5132 RH |
4861 | } |
4862 | ||
4863 | elf_elfheader (obfd)->e_flags = in_flags; | |
b34976b6 | 4864 | elf_flags_init (obfd) = TRUE; |
252b5132 | 4865 | |
94a3258f PB |
4866 | /* Also copy the EI_OSABI field. */ |
4867 | elf_elfheader (obfd)->e_ident[EI_OSABI] = | |
4868 | elf_elfheader (ibfd)->e_ident[EI_OSABI]; | |
4869 | ||
ee065d83 PB |
4870 | /* Copy EABI object attributes. */ |
4871 | copy_eabi_attributes (ibfd, obfd); | |
4872 | ||
4873 | return TRUE; | |
4874 | } | |
4875 | ||
4876 | /* Values for Tag_ABI_PCS_R9_use. */ | |
4877 | enum | |
4878 | { | |
4879 | AEABI_R9_V6, | |
4880 | AEABI_R9_SB, | |
4881 | AEABI_R9_TLS, | |
4882 | AEABI_R9_unused | |
4883 | }; | |
4884 | ||
4885 | /* Values for Tag_ABI_PCS_RW_data. */ | |
4886 | enum | |
4887 | { | |
4888 | AEABI_PCS_RW_data_absolute, | |
4889 | AEABI_PCS_RW_data_PCrel, | |
4890 | AEABI_PCS_RW_data_SBrel, | |
4891 | AEABI_PCS_RW_data_unused | |
4892 | }; | |
4893 | ||
4894 | /* Values for Tag_ABI_enum_size. */ | |
4895 | enum | |
4896 | { | |
4897 | AEABI_enum_unused, | |
4898 | AEABI_enum_short, | |
4899 | AEABI_enum_wide, | |
4900 | AEABI_enum_forced_wide | |
4901 | }; | |
4902 | ||
4903 | /* Merge EABI object attributes from IBFD into OBFD. Raise an error if there | |
4904 | are conflicting attributes. */ | |
4905 | static bfd_boolean | |
4906 | elf32_arm_merge_eabi_attributes (bfd *ibfd, bfd *obfd) | |
4907 | { | |
4908 | aeabi_attribute *in_attr; | |
4909 | aeabi_attribute *out_attr; | |
4910 | aeabi_attribute_list *in_list; | |
4911 | aeabi_attribute_list *out_list; | |
4912 | /* Some tags have 0 = don't care, 1 = strong requirement, | |
4913 | 2 = weak requirement. */ | |
4914 | static const int order_312[3] = {3, 1, 2}; | |
4915 | int i; | |
4916 | ||
4917 | if (!elf32_arm_tdata (ibfd)->known_eabi_attributes[0].i) | |
4918 | { | |
4919 | /* This is the first object. Copy the attributes. */ | |
4920 | copy_eabi_attributes (ibfd, obfd); | |
4921 | return TRUE; | |
4922 | } | |
4923 | ||
4924 | /* Use the Tag_null value to indicate the attributes have been | |
4925 | initialized. */ | |
4926 | elf32_arm_tdata (ibfd)->known_eabi_attributes[0].i = 1; | |
4927 | ||
4928 | in_attr = elf32_arm_tdata (ibfd)->known_eabi_attributes; | |
4929 | out_attr = elf32_arm_tdata (obfd)->known_eabi_attributes; | |
4930 | /* This needs to happen before Tag_ABI_FP_number_model is merged. */ | |
4931 | if (in_attr[Tag_ABI_VFP_args].i != out_attr[Tag_ABI_VFP_args].i) | |
4932 | { | |
4933 | /* Ignore mismatches if teh object doesn't use floating point. */ | |
4934 | if (out_attr[Tag_ABI_FP_number_model].i == 0) | |
4935 | out_attr[Tag_ABI_VFP_args].i = in_attr[Tag_ABI_VFP_args].i; | |
4936 | else if (in_attr[Tag_ABI_FP_number_model].i != 0) | |
4937 | { | |
4938 | _bfd_error_handler | |
4939 | (_("ERROR: %B uses VFP register arguments, %B does not"), | |
4940 | ibfd, obfd); | |
4941 | return FALSE; | |
4942 | } | |
4943 | } | |
4944 | ||
4945 | for (i = 4; i < NUM_KNOWN_ATTRIBUTES; i++) | |
4946 | { | |
4947 | /* Merge this attribute with existing attributes. */ | |
4948 | switch (i) | |
4949 | { | |
4950 | case Tag_CPU_raw_name: | |
4951 | case Tag_CPU_name: | |
4952 | /* Use whichever has the greatest architecture requirements. */ | |
4953 | if (in_attr[Tag_CPU_arch].i > out_attr[Tag_CPU_arch].i) | |
4954 | out_attr[i].s = attr_strdup(obfd, in_attr[i].s); | |
4955 | break; | |
4956 | ||
4957 | case Tag_ABI_optimization_goals: | |
4958 | case Tag_ABI_FP_optimization_goals: | |
4959 | /* Use the first value seen. */ | |
4960 | break; | |
4961 | ||
4962 | case Tag_CPU_arch: | |
4963 | case Tag_ARM_ISA_use: | |
4964 | case Tag_THUMB_ISA_use: | |
4965 | case Tag_VFP_arch: | |
4966 | case Tag_WMMX_arch: | |
4967 | case Tag_NEON_arch: | |
4968 | /* ??? Do NEON and WMMX conflict? */ | |
4969 | case Tag_ABI_FP_rounding: | |
4970 | case Tag_ABI_FP_denormal: | |
4971 | case Tag_ABI_FP_exceptions: | |
4972 | case Tag_ABI_FP_user_exceptions: | |
4973 | case Tag_ABI_FP_number_model: | |
4974 | case Tag_ABI_align8_preserved: | |
4975 | case Tag_ABI_HardFP_use: | |
4976 | /* Use the largest value specified. */ | |
4977 | if (in_attr[i].i > out_attr[i].i) | |
4978 | out_attr[i].i = in_attr[i].i; | |
4979 | break; | |
4980 | ||
4981 | case Tag_CPU_arch_profile: | |
4982 | /* Warn if conflicting architecture profiles used. */ | |
4983 | if (out_attr[i].i && in_attr[i].i && in_attr[i].i != out_attr[i].i) | |
4984 | { | |
4985 | _bfd_error_handler | |
4986 | (_("ERROR: %B: Conflicting architecture profiles %c/%c"), | |
4987 | ibfd, in_attr[i].i, out_attr[i].i); | |
4988 | return FALSE; | |
4989 | } | |
4990 | if (in_attr[i].i) | |
4991 | out_attr[i].i = in_attr[i].i; | |
4992 | break; | |
4993 | case Tag_PCS_config: | |
4994 | if (out_attr[i].i == 0) | |
4995 | out_attr[i].i = in_attr[i].i; | |
4996 | else if (in_attr[i].i != 0 && out_attr[i].i != 0) | |
4997 | { | |
4998 | /* It's sometimes ok to mix different configs, so this is only | |
4999 | a warning. */ | |
5000 | _bfd_error_handler | |
5001 | (_("Warning: %B: Conflicting platform configuration"), ibfd); | |
5002 | } | |
5003 | break; | |
5004 | case Tag_ABI_PCS_R9_use: | |
5005 | if (out_attr[i].i != AEABI_R9_unused | |
5006 | && in_attr[i].i != AEABI_R9_unused) | |
5007 | { | |
5008 | _bfd_error_handler | |
5009 | (_("ERROR: %B: Conflicting use of R9"), ibfd); | |
5010 | return FALSE; | |
5011 | } | |
5012 | if (out_attr[i].i == AEABI_R9_unused) | |
5013 | out_attr[i].i = in_attr[i].i; | |
5014 | break; | |
5015 | case Tag_ABI_PCS_RW_data: | |
5016 | if (in_attr[i].i == AEABI_PCS_RW_data_SBrel | |
5017 | && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_SB | |
5018 | && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_unused) | |
5019 | { | |
5020 | _bfd_error_handler | |
5021 | (_("ERROR: %B: SB relative addressing conflicts with use of R9"), | |
5022 | ibfd); | |
5023 | return FALSE; | |
5024 | } | |
5025 | /* Use the smallest value specified. */ | |
5026 | if (in_attr[i].i < out_attr[i].i) | |
5027 | out_attr[i].i = in_attr[i].i; | |
5028 | break; | |
5029 | case Tag_ABI_PCS_RO_data: | |
5030 | /* Use the smallest value specified. */ | |
5031 | if (in_attr[i].i < out_attr[i].i) | |
5032 | out_attr[i].i = in_attr[i].i; | |
5033 | break; | |
5034 | case Tag_ABI_PCS_GOT_use: | |
5035 | if (in_attr[i].i > 2 || out_attr[i].i > 2 | |
5036 | || order_312[in_attr[i].i] < order_312[out_attr[i].i]) | |
5037 | out_attr[i].i = in_attr[i].i; | |
5038 | break; | |
5039 | case Tag_ABI_PCS_wchar_t: | |
5040 | if (out_attr[i].i && in_attr[i].i && out_attr[i].i != in_attr[i].i) | |
5041 | { | |
5042 | _bfd_error_handler | |
5043 | (_("ERROR: %B: Conflicting definitions of wchar_t"), ibfd); | |
5044 | return FALSE; | |
5045 | } | |
5046 | if (in_attr[i].i) | |
5047 | out_attr[i].i = in_attr[i].i; | |
5048 | break; | |
5049 | case Tag_ABI_align8_needed: | |
5050 | /* ??? Check against Tag_ABI_align8_preserved. */ | |
5051 | if (in_attr[i].i > 2 || out_attr[i].i > 2 | |
5052 | || order_312[in_attr[i].i] < order_312[out_attr[i].i]) | |
5053 | out_attr[i].i = in_attr[i].i; | |
5054 | break; | |
5055 | case Tag_ABI_enum_size: | |
5056 | if (in_attr[i].i != AEABI_enum_unused) | |
5057 | { | |
5058 | if (out_attr[i].i == AEABI_enum_unused | |
5059 | || out_attr[i].i == AEABI_enum_forced_wide) | |
5060 | { | |
5061 | /* The existing object is compatible with anything. | |
5062 | Use whatever requirements the new object has. */ | |
5063 | out_attr[i].i = in_attr[i].i; | |
5064 | } | |
5065 | else if (in_attr[i].i != AEABI_enum_forced_wide | |
5066 | && out_attr[i].i != in_attr[i].i) | |
5067 | { | |
5068 | _bfd_error_handler | |
5069 | (_("ERROR: %B: Conflicting enum sizes"), ibfd); | |
5070 | } | |
5071 | } | |
5072 | break; | |
5073 | case Tag_ABI_VFP_args: | |
5074 | /* Aready done. */ | |
5075 | break; | |
5076 | case Tag_ABI_WMMX_args: | |
5077 | if (in_attr[i].i != out_attr[i].i) | |
5078 | { | |
5079 | _bfd_error_handler | |
5080 | (_("ERROR: %B uses iWMMXt register arguments, %B does not"), | |
5081 | ibfd, obfd); | |
5082 | return FALSE; | |
5083 | } | |
5084 | break; | |
5085 | default: /* All known attributes should be explicitly covered. */ | |
5086 | abort (); | |
5087 | } | |
5088 | } | |
5089 | ||
5090 | in_list = elf32_arm_tdata (ibfd)->other_eabi_attributes; | |
5091 | out_list = elf32_arm_tdata (ibfd)->other_eabi_attributes; | |
5092 | while (in_list && in_list->tag == Tag_compatibility) | |
5093 | { | |
5094 | in_attr = &in_list->attr; | |
5095 | if (in_attr->i == 0) | |
5096 | continue; | |
5097 | if (in_attr->i == 1) | |
5098 | { | |
5099 | _bfd_error_handler | |
5100 | (_("ERROR: %B: Must be processed by '%s' toolchain"), | |
5101 | ibfd, in_attr->s); | |
5102 | return FALSE; | |
5103 | } | |
5104 | if (!out_list || out_list->tag != Tag_compatibility | |
5105 | || strcmp (in_attr->s, out_list->attr.s) != 0) | |
5106 | { | |
5107 | /* Add this compatibility tag to the output. */ | |
5108 | elf32_arm_add_eabi_attr_compat (obfd, in_attr->i, in_attr->s); | |
5109 | continue; | |
5110 | } | |
5111 | out_attr = &out_list->attr; | |
5112 | /* Check all the input tags with the same identifier. */ | |
5113 | for (;;) | |
5114 | { | |
5115 | if (out_list->tag != Tag_compatibility | |
5116 | || in_attr->i != out_attr->i | |
5117 | || strcmp (in_attr->s, out_attr->s) != 0) | |
5118 | { | |
5119 | _bfd_error_handler | |
5120 | (_("ERROR: %B: Incompatible object tag '%s':%d"), | |
5121 | ibfd, in_attr->s, in_attr->i); | |
5122 | return FALSE; | |
5123 | } | |
5124 | in_list = in_list->next; | |
5125 | if (in_list->tag != Tag_compatibility | |
5126 | || strcmp (in_attr->s, in_list->attr.s) != 0) | |
5127 | break; | |
5128 | in_attr = &in_list->attr; | |
5129 | out_list = out_list->next; | |
5130 | if (out_list) | |
5131 | out_attr = &out_list->attr; | |
5132 | } | |
5133 | ||
5134 | /* Check the output doesn't have extra tags with this identifier. */ | |
5135 | if (out_list && out_list->tag == Tag_compatibility | |
5136 | && strcmp (in_attr->s, out_list->attr.s) == 0) | |
5137 | { | |
5138 | _bfd_error_handler | |
5139 | (_("ERROR: %B: Incompatible object tag '%s':%d"), | |
5140 | ibfd, in_attr->s, out_list->attr.i); | |
5141 | return FALSE; | |
5142 | } | |
5143 | } | |
5144 | ||
5145 | for (; in_list; in_list = in_list->next) | |
5146 | { | |
5147 | if ((in_list->tag & 128) < 64) | |
5148 | _bfd_error_handler | |
5149 | (_("Warning: %B: Unknown EABI object attribute %d"), | |
5150 | ibfd, in_list->tag); | |
5151 | break; | |
5152 | } | |
b34976b6 | 5153 | return TRUE; |
252b5132 RH |
5154 | } |
5155 | ||
5156 | /* Merge backend specific data from an object file to the output | |
5157 | object file when linking. */ | |
9b485d32 | 5158 | |
b34976b6 | 5159 | static bfd_boolean |
57e8b36a | 5160 | elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd) |
252b5132 RH |
5161 | { |
5162 | flagword out_flags; | |
5163 | flagword in_flags; | |
b34976b6 | 5164 | bfd_boolean flags_compatible = TRUE; |
cf919dfd | 5165 | asection *sec; |
252b5132 | 5166 | |
9b485d32 | 5167 | /* Check if we have the same endianess. */ |
82e51918 | 5168 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) |
b34976b6 | 5169 | return FALSE; |
1fe494a5 | 5170 | |
252b5132 RH |
5171 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
5172 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 5173 | return TRUE; |
252b5132 | 5174 | |
ee065d83 PB |
5175 | if (!elf32_arm_merge_eabi_attributes (ibfd, obfd)) |
5176 | return FALSE; | |
5177 | ||
252b5132 RH |
5178 | /* The input BFD must have had its flags initialised. */ |
5179 | /* The following seems bogus to me -- The flags are initialized in | |
5180 | the assembler but I don't think an elf_flags_init field is | |
9b485d32 | 5181 | written into the object. */ |
252b5132 RH |
5182 | /* BFD_ASSERT (elf_flags_init (ibfd)); */ |
5183 | ||
5184 | in_flags = elf_elfheader (ibfd)->e_flags; | |
5185 | out_flags = elf_elfheader (obfd)->e_flags; | |
5186 | ||
5187 | if (!elf_flags_init (obfd)) | |
5188 | { | |
fe077fa6 NC |
5189 | /* If the input is the default architecture and had the default |
5190 | flags then do not bother setting the flags for the output | |
5191 | architecture, instead allow future merges to do this. If no | |
5192 | future merges ever set these flags then they will retain their | |
5193 | uninitialised values, which surprise surprise, correspond | |
252b5132 | 5194 | to the default values. */ |
fe077fa6 NC |
5195 | if (bfd_get_arch_info (ibfd)->the_default |
5196 | && elf_elfheader (ibfd)->e_flags == 0) | |
b34976b6 | 5197 | return TRUE; |
252b5132 | 5198 | |
b34976b6 | 5199 | elf_flags_init (obfd) = TRUE; |
252b5132 RH |
5200 | elf_elfheader (obfd)->e_flags = in_flags; |
5201 | ||
5202 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
5203 | && bfd_get_arch_info (obfd)->the_default) | |
5204 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); | |
5205 | ||
b34976b6 | 5206 | return TRUE; |
252b5132 RH |
5207 | } |
5208 | ||
5a6c6817 NC |
5209 | /* Determine what should happen if the input ARM architecture |
5210 | does not match the output ARM architecture. */ | |
5211 | if (! bfd_arm_merge_machines (ibfd, obfd)) | |
5212 | return FALSE; | |
e16bb312 | 5213 | |
1006ba19 | 5214 | /* Identical flags must be compatible. */ |
252b5132 | 5215 | if (in_flags == out_flags) |
b34976b6 | 5216 | return TRUE; |
252b5132 | 5217 | |
35a0f415 DJ |
5218 | /* Check to see if the input BFD actually contains any sections. If |
5219 | not, its flags may not have been initialised either, but it | |
8e3de13a | 5220 | cannot actually cause any incompatiblity. Do not short-circuit |
35a0f415 | 5221 | dynamic objects; their section list may be emptied by |
d1f161ea | 5222 | elf_link_add_object_symbols. |
35a0f415 | 5223 | |
d1f161ea NC |
5224 | Also check to see if there are no code sections in the input. |
5225 | In this case there is no need to check for code specific flags. | |
5226 | XXX - do we need to worry about floating-point format compatability | |
5227 | in data sections ? */ | |
35a0f415 | 5228 | if (!(ibfd->flags & DYNAMIC)) |
cf919dfd | 5229 | { |
35a0f415 | 5230 | bfd_boolean null_input_bfd = TRUE; |
d1f161ea | 5231 | bfd_boolean only_data_sections = TRUE; |
35a0f415 DJ |
5232 | |
5233 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
cf919dfd | 5234 | { |
35a0f415 DJ |
5235 | /* Ignore synthetic glue sections. */ |
5236 | if (strcmp (sec->name, ".glue_7") | |
5237 | && strcmp (sec->name, ".glue_7t")) | |
5238 | { | |
d1f161ea NC |
5239 | if ((bfd_get_section_flags (ibfd, sec) |
5240 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
5241 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
5242 | only_data_sections = FALSE; | |
5243 | ||
35a0f415 DJ |
5244 | null_input_bfd = FALSE; |
5245 | break; | |
5246 | } | |
cf919dfd | 5247 | } |
d1f161ea NC |
5248 | |
5249 | if (null_input_bfd || only_data_sections) | |
35a0f415 | 5250 | return TRUE; |
cf919dfd | 5251 | } |
cf919dfd | 5252 | |
252b5132 | 5253 | /* Complain about various flag mismatches. */ |
fc830a83 NC |
5254 | if (EF_ARM_EABI_VERSION (in_flags) != EF_ARM_EABI_VERSION (out_flags)) |
5255 | { | |
d003868e | 5256 | _bfd_error_handler |
3656d5e3 | 5257 | (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"), |
d003868e AM |
5258 | ibfd, obfd, |
5259 | (in_flags & EF_ARM_EABIMASK) >> 24, | |
5260 | (out_flags & EF_ARM_EABIMASK) >> 24); | |
b34976b6 | 5261 | return FALSE; |
fc830a83 | 5262 | } |
252b5132 | 5263 | |
1006ba19 | 5264 | /* Not sure what needs to be checked for EABI versions >= 1. */ |
00a97672 RS |
5265 | /* VxWorks libraries do not use these flags. */ |
5266 | if (get_elf_backend_data (obfd) != &elf32_arm_vxworks_bed | |
5267 | && get_elf_backend_data (ibfd) != &elf32_arm_vxworks_bed | |
5268 | && EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN) | |
1006ba19 | 5269 | { |
fd2ec330 | 5270 | if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26)) |
1006ba19 | 5271 | { |
d003868e AM |
5272 | _bfd_error_handler |
5273 | (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"), | |
5274 | ibfd, obfd, | |
5275 | in_flags & EF_ARM_APCS_26 ? 26 : 32, | |
5276 | out_flags & EF_ARM_APCS_26 ? 26 : 32); | |
b34976b6 | 5277 | flags_compatible = FALSE; |
1006ba19 | 5278 | } |
252b5132 | 5279 | |
fd2ec330 | 5280 | if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT)) |
1006ba19 | 5281 | { |
5eefb65f | 5282 | if (in_flags & EF_ARM_APCS_FLOAT) |
d003868e AM |
5283 | _bfd_error_handler |
5284 | (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"), | |
5285 | ibfd, obfd); | |
5eefb65f | 5286 | else |
d003868e AM |
5287 | _bfd_error_handler |
5288 | (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"), | |
5289 | ibfd, obfd); | |
63b0f745 | 5290 | |
b34976b6 | 5291 | flags_compatible = FALSE; |
1006ba19 | 5292 | } |
252b5132 | 5293 | |
96a846ea | 5294 | if ((in_flags & EF_ARM_VFP_FLOAT) != (out_flags & EF_ARM_VFP_FLOAT)) |
1006ba19 | 5295 | { |
96a846ea | 5296 | if (in_flags & EF_ARM_VFP_FLOAT) |
d003868e AM |
5297 | _bfd_error_handler |
5298 | (_("ERROR: %B uses VFP instructions, whereas %B does not"), | |
5299 | ibfd, obfd); | |
5eefb65f | 5300 | else |
d003868e AM |
5301 | _bfd_error_handler |
5302 | (_("ERROR: %B uses FPA instructions, whereas %B does not"), | |
5303 | ibfd, obfd); | |
fde78edd NC |
5304 | |
5305 | flags_compatible = FALSE; | |
5306 | } | |
5307 | ||
5308 | if ((in_flags & EF_ARM_MAVERICK_FLOAT) != (out_flags & EF_ARM_MAVERICK_FLOAT)) | |
5309 | { | |
5310 | if (in_flags & EF_ARM_MAVERICK_FLOAT) | |
d003868e AM |
5311 | _bfd_error_handler |
5312 | (_("ERROR: %B uses Maverick instructions, whereas %B does not"), | |
5313 | ibfd, obfd); | |
fde78edd | 5314 | else |
d003868e AM |
5315 | _bfd_error_handler |
5316 | (_("ERROR: %B does not use Maverick instructions, whereas %B does"), | |
5317 | ibfd, obfd); | |
63b0f745 | 5318 | |
b34976b6 | 5319 | flags_compatible = FALSE; |
1006ba19 | 5320 | } |
96a846ea RE |
5321 | |
5322 | #ifdef EF_ARM_SOFT_FLOAT | |
5323 | if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT)) | |
5324 | { | |
5325 | /* We can allow interworking between code that is VFP format | |
5326 | layout, and uses either soft float or integer regs for | |
5327 | passing floating point arguments and results. We already | |
5328 | know that the APCS_FLOAT flags match; similarly for VFP | |
5329 | flags. */ | |
5330 | if ((in_flags & EF_ARM_APCS_FLOAT) != 0 | |
5331 | || (in_flags & EF_ARM_VFP_FLOAT) == 0) | |
5332 | { | |
5333 | if (in_flags & EF_ARM_SOFT_FLOAT) | |
d003868e AM |
5334 | _bfd_error_handler |
5335 | (_("ERROR: %B uses software FP, whereas %B uses hardware FP"), | |
5336 | ibfd, obfd); | |
96a846ea | 5337 | else |
d003868e AM |
5338 | _bfd_error_handler |
5339 | (_("ERROR: %B uses hardware FP, whereas %B uses software FP"), | |
5340 | ibfd, obfd); | |
96a846ea | 5341 | |
b34976b6 | 5342 | flags_compatible = FALSE; |
96a846ea RE |
5343 | } |
5344 | } | |
ee43f35e | 5345 | #endif |
252b5132 | 5346 | |
1006ba19 | 5347 | /* Interworking mismatch is only a warning. */ |
fd2ec330 | 5348 | if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK)) |
8f615d07 | 5349 | { |
e3c8793a NC |
5350 | if (in_flags & EF_ARM_INTERWORK) |
5351 | { | |
d003868e AM |
5352 | _bfd_error_handler |
5353 | (_("Warning: %B supports interworking, whereas %B does not"), | |
5354 | ibfd, obfd); | |
e3c8793a NC |
5355 | } |
5356 | else | |
5357 | { | |
d003868e AM |
5358 | _bfd_error_handler |
5359 | (_("Warning: %B does not support interworking, whereas %B does"), | |
5360 | ibfd, obfd); | |
e3c8793a | 5361 | } |
8f615d07 | 5362 | } |
252b5132 | 5363 | } |
63b0f745 | 5364 | |
1006ba19 | 5365 | return flags_compatible; |
252b5132 RH |
5366 | } |
5367 | ||
9b485d32 NC |
5368 | /* Display the flags field. */ |
5369 | ||
b34976b6 | 5370 | static bfd_boolean |
57e8b36a | 5371 | elf32_arm_print_private_bfd_data (bfd *abfd, void * ptr) |
252b5132 | 5372 | { |
fc830a83 NC |
5373 | FILE * file = (FILE *) ptr; |
5374 | unsigned long flags; | |
252b5132 RH |
5375 | |
5376 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
5377 | ||
5378 | /* Print normal ELF private data. */ | |
5379 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
5380 | ||
fc830a83 | 5381 | flags = elf_elfheader (abfd)->e_flags; |
9b485d32 NC |
5382 | /* Ignore init flag - it may not be set, despite the flags field |
5383 | containing valid data. */ | |
252b5132 RH |
5384 | |
5385 | /* xgettext:c-format */ | |
9b485d32 | 5386 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); |
252b5132 | 5387 | |
fc830a83 NC |
5388 | switch (EF_ARM_EABI_VERSION (flags)) |
5389 | { | |
5390 | case EF_ARM_EABI_UNKNOWN: | |
4cc11e76 | 5391 | /* The following flag bits are GNU extensions and not part of the |
fc830a83 NC |
5392 | official ARM ELF extended ABI. Hence they are only decoded if |
5393 | the EABI version is not set. */ | |
fd2ec330 | 5394 | if (flags & EF_ARM_INTERWORK) |
9b485d32 | 5395 | fprintf (file, _(" [interworking enabled]")); |
9a5aca8c | 5396 | |
fd2ec330 | 5397 | if (flags & EF_ARM_APCS_26) |
6c571f00 | 5398 | fprintf (file, " [APCS-26]"); |
fc830a83 | 5399 | else |
6c571f00 | 5400 | fprintf (file, " [APCS-32]"); |
9a5aca8c | 5401 | |
96a846ea RE |
5402 | if (flags & EF_ARM_VFP_FLOAT) |
5403 | fprintf (file, _(" [VFP float format]")); | |
fde78edd NC |
5404 | else if (flags & EF_ARM_MAVERICK_FLOAT) |
5405 | fprintf (file, _(" [Maverick float format]")); | |
96a846ea RE |
5406 | else |
5407 | fprintf (file, _(" [FPA float format]")); | |
5408 | ||
fd2ec330 | 5409 | if (flags & EF_ARM_APCS_FLOAT) |
9b485d32 | 5410 | fprintf (file, _(" [floats passed in float registers]")); |
9a5aca8c | 5411 | |
fd2ec330 | 5412 | if (flags & EF_ARM_PIC) |
9b485d32 | 5413 | fprintf (file, _(" [position independent]")); |
fc830a83 | 5414 | |
fd2ec330 | 5415 | if (flags & EF_ARM_NEW_ABI) |
9b485d32 | 5416 | fprintf (file, _(" [new ABI]")); |
9a5aca8c | 5417 | |
fd2ec330 | 5418 | if (flags & EF_ARM_OLD_ABI) |
9b485d32 | 5419 | fprintf (file, _(" [old ABI]")); |
9a5aca8c | 5420 | |
fd2ec330 | 5421 | if (flags & EF_ARM_SOFT_FLOAT) |
9b485d32 | 5422 | fprintf (file, _(" [software FP]")); |
9a5aca8c | 5423 | |
96a846ea RE |
5424 | flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT |
5425 | | EF_ARM_PIC | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI | |
fde78edd NC |
5426 | | EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT |
5427 | | EF_ARM_MAVERICK_FLOAT); | |
fc830a83 | 5428 | break; |
9a5aca8c | 5429 | |
fc830a83 | 5430 | case EF_ARM_EABI_VER1: |
9b485d32 | 5431 | fprintf (file, _(" [Version1 EABI]")); |
9a5aca8c | 5432 | |
fc830a83 | 5433 | if (flags & EF_ARM_SYMSARESORTED) |
9b485d32 | 5434 | fprintf (file, _(" [sorted symbol table]")); |
fc830a83 | 5435 | else |
9b485d32 | 5436 | fprintf (file, _(" [unsorted symbol table]")); |
9a5aca8c | 5437 | |
fc830a83 NC |
5438 | flags &= ~ EF_ARM_SYMSARESORTED; |
5439 | break; | |
9a5aca8c | 5440 | |
fd2ec330 PB |
5441 | case EF_ARM_EABI_VER2: |
5442 | fprintf (file, _(" [Version2 EABI]")); | |
5443 | ||
5444 | if (flags & EF_ARM_SYMSARESORTED) | |
5445 | fprintf (file, _(" [sorted symbol table]")); | |
5446 | else | |
5447 | fprintf (file, _(" [unsorted symbol table]")); | |
5448 | ||
5449 | if (flags & EF_ARM_DYNSYMSUSESEGIDX) | |
5450 | fprintf (file, _(" [dynamic symbols use segment index]")); | |
5451 | ||
5452 | if (flags & EF_ARM_MAPSYMSFIRST) | |
5453 | fprintf (file, _(" [mapping symbols precede others]")); | |
5454 | ||
99e4ae17 | 5455 | flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX |
fd2ec330 PB |
5456 | | EF_ARM_MAPSYMSFIRST); |
5457 | break; | |
5458 | ||
d507cf36 PB |
5459 | case EF_ARM_EABI_VER3: |
5460 | fprintf (file, _(" [Version3 EABI]")); | |
8cb51566 PB |
5461 | break; |
5462 | ||
5463 | case EF_ARM_EABI_VER4: | |
5464 | fprintf (file, _(" [Version4 EABI]")); | |
d507cf36 PB |
5465 | |
5466 | if (flags & EF_ARM_BE8) | |
5467 | fprintf (file, _(" [BE8]")); | |
5468 | ||
5469 | if (flags & EF_ARM_LE8) | |
5470 | fprintf (file, _(" [LE8]")); | |
5471 | ||
5472 | flags &= ~(EF_ARM_LE8 | EF_ARM_BE8); | |
5473 | break; | |
5474 | ||
fc830a83 | 5475 | default: |
9b485d32 | 5476 | fprintf (file, _(" <EABI version unrecognised>")); |
fc830a83 NC |
5477 | break; |
5478 | } | |
252b5132 | 5479 | |
fc830a83 | 5480 | flags &= ~ EF_ARM_EABIMASK; |
252b5132 | 5481 | |
fc830a83 | 5482 | if (flags & EF_ARM_RELEXEC) |
9b485d32 | 5483 | fprintf (file, _(" [relocatable executable]")); |
252b5132 | 5484 | |
fc830a83 | 5485 | if (flags & EF_ARM_HASENTRY) |
9b485d32 | 5486 | fprintf (file, _(" [has entry point]")); |
252b5132 | 5487 | |
fc830a83 NC |
5488 | flags &= ~ (EF_ARM_RELEXEC | EF_ARM_HASENTRY); |
5489 | ||
5490 | if (flags) | |
9b485d32 | 5491 | fprintf (file, _("<Unrecognised flag bits set>")); |
9a5aca8c | 5492 | |
252b5132 RH |
5493 | fputc ('\n', file); |
5494 | ||
b34976b6 | 5495 | return TRUE; |
252b5132 RH |
5496 | } |
5497 | ||
5498 | static int | |
57e8b36a | 5499 | elf32_arm_get_symbol_type (Elf_Internal_Sym * elf_sym, int type) |
252b5132 | 5500 | { |
2f0ca46a NC |
5501 | switch (ELF_ST_TYPE (elf_sym->st_info)) |
5502 | { | |
5503 | case STT_ARM_TFUNC: | |
5504 | return ELF_ST_TYPE (elf_sym->st_info); | |
ce855c42 | 5505 | |
2f0ca46a NC |
5506 | case STT_ARM_16BIT: |
5507 | /* If the symbol is not an object, return the STT_ARM_16BIT flag. | |
5508 | This allows us to distinguish between data used by Thumb instructions | |
5509 | and non-data (which is probably code) inside Thumb regions of an | |
5510 | executable. */ | |
1a0eb693 | 5511 | if (type != STT_OBJECT && type != STT_TLS) |
2f0ca46a NC |
5512 | return ELF_ST_TYPE (elf_sym->st_info); |
5513 | break; | |
9a5aca8c | 5514 | |
ce855c42 NC |
5515 | default: |
5516 | break; | |
2f0ca46a NC |
5517 | } |
5518 | ||
5519 | return type; | |
252b5132 | 5520 | } |
f21f3fe0 | 5521 | |
252b5132 | 5522 | static asection * |
57e8b36a NC |
5523 | elf32_arm_gc_mark_hook (asection * sec, |
5524 | struct bfd_link_info * info ATTRIBUTE_UNUSED, | |
5525 | Elf_Internal_Rela * rel, | |
5526 | struct elf_link_hash_entry * h, | |
5527 | Elf_Internal_Sym * sym) | |
252b5132 RH |
5528 | { |
5529 | if (h != NULL) | |
5530 | { | |
5531 | switch (ELF32_R_TYPE (rel->r_info)) | |
5532 | { | |
5533 | case R_ARM_GNU_VTINHERIT: | |
5534 | case R_ARM_GNU_VTENTRY: | |
5535 | break; | |
5536 | ||
5537 | default: | |
5538 | switch (h->root.type) | |
5539 | { | |
5540 | case bfd_link_hash_defined: | |
5541 | case bfd_link_hash_defweak: | |
5542 | return h->root.u.def.section; | |
5543 | ||
5544 | case bfd_link_hash_common: | |
5545 | return h->root.u.c.p->section; | |
e049a0de ILT |
5546 | |
5547 | default: | |
5548 | break; | |
252b5132 RH |
5549 | } |
5550 | } | |
5551 | } | |
5552 | else | |
1e2f5b6e | 5553 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
9ad5cbcf | 5554 | |
252b5132 RH |
5555 | return NULL; |
5556 | } | |
5557 | ||
780a67af NC |
5558 | /* Update the got entry reference counts for the section being removed. */ |
5559 | ||
b34976b6 | 5560 | static bfd_boolean |
ba93b8ac DJ |
5561 | elf32_arm_gc_sweep_hook (bfd * abfd, |
5562 | struct bfd_link_info * info, | |
5563 | asection * sec, | |
5564 | const Elf_Internal_Rela * relocs) | |
252b5132 | 5565 | { |
5e681ec4 PB |
5566 | Elf_Internal_Shdr *symtab_hdr; |
5567 | struct elf_link_hash_entry **sym_hashes; | |
5568 | bfd_signed_vma *local_got_refcounts; | |
5569 | const Elf_Internal_Rela *rel, *relend; | |
eb043451 PB |
5570 | struct elf32_arm_link_hash_table * globals; |
5571 | ||
5572 | globals = elf32_arm_hash_table (info); | |
5e681ec4 PB |
5573 | |
5574 | elf_section_data (sec)->local_dynrel = NULL; | |
5575 | ||
5576 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
5577 | sym_hashes = elf_sym_hashes (abfd); | |
5578 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
5579 | ||
5580 | relend = relocs + sec->reloc_count; | |
5581 | for (rel = relocs; rel < relend; rel++) | |
eb043451 | 5582 | { |
3eb128b2 AM |
5583 | unsigned long r_symndx; |
5584 | struct elf_link_hash_entry *h = NULL; | |
eb043451 | 5585 | int r_type; |
5e681ec4 | 5586 | |
3eb128b2 AM |
5587 | r_symndx = ELF32_R_SYM (rel->r_info); |
5588 | if (r_symndx >= symtab_hdr->sh_info) | |
5589 | { | |
5590 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
5591 | while (h->root.type == bfd_link_hash_indirect | |
5592 | || h->root.type == bfd_link_hash_warning) | |
5593 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5594 | } | |
5595 | ||
eb043451 | 5596 | r_type = ELF32_R_TYPE (rel->r_info); |
eb043451 | 5597 | r_type = arm_real_reloc_type (globals, r_type); |
eb043451 PB |
5598 | switch (r_type) |
5599 | { | |
5600 | case R_ARM_GOT32: | |
eb043451 | 5601 | case R_ARM_GOT_PREL: |
ba93b8ac DJ |
5602 | case R_ARM_TLS_GD32: |
5603 | case R_ARM_TLS_IE32: | |
3eb128b2 | 5604 | if (h != NULL) |
eb043451 | 5605 | { |
eb043451 PB |
5606 | if (h->got.refcount > 0) |
5607 | h->got.refcount -= 1; | |
5608 | } | |
5609 | else if (local_got_refcounts != NULL) | |
5610 | { | |
5611 | if (local_got_refcounts[r_symndx] > 0) | |
5612 | local_got_refcounts[r_symndx] -= 1; | |
5613 | } | |
5614 | break; | |
5615 | ||
ba93b8ac DJ |
5616 | case R_ARM_TLS_LDM32: |
5617 | elf32_arm_hash_table (info)->tls_ldm_got.refcount -= 1; | |
5618 | break; | |
5619 | ||
eb043451 PB |
5620 | case R_ARM_ABS32: |
5621 | case R_ARM_REL32: | |
5622 | case R_ARM_PC24: | |
5623 | case R_ARM_PLT32: | |
5b5bb741 PB |
5624 | case R_ARM_CALL: |
5625 | case R_ARM_JUMP24: | |
eb043451 | 5626 | case R_ARM_PREL31: |
c19d1205 | 5627 | case R_ARM_THM_CALL: |
b7693d02 DJ |
5628 | /* Should the interworking branches be here also? */ |
5629 | ||
3eb128b2 | 5630 | if (h != NULL) |
eb043451 PB |
5631 | { |
5632 | struct elf32_arm_link_hash_entry *eh; | |
5633 | struct elf32_arm_relocs_copied **pp; | |
5634 | struct elf32_arm_relocs_copied *p; | |
5e681ec4 | 5635 | |
b7693d02 | 5636 | eh = (struct elf32_arm_link_hash_entry *) h; |
5e681ec4 | 5637 | |
eb043451 | 5638 | if (h->plt.refcount > 0) |
b7693d02 DJ |
5639 | { |
5640 | h->plt.refcount -= 1; | |
c19d1205 | 5641 | if (ELF32_R_TYPE (rel->r_info) == R_ARM_THM_CALL) |
b7693d02 DJ |
5642 | eh->plt_thumb_refcount--; |
5643 | } | |
5e681ec4 | 5644 | |
eb043451 | 5645 | if (r_type == R_ARM_ABS32 |
eb043451 PB |
5646 | || r_type == R_ARM_REL32) |
5647 | { | |
eb043451 PB |
5648 | for (pp = &eh->relocs_copied; (p = *pp) != NULL; |
5649 | pp = &p->next) | |
5650 | if (p->section == sec) | |
5651 | { | |
5652 | p->count -= 1; | |
ba93b8ac DJ |
5653 | if (ELF32_R_TYPE (rel->r_info) == R_ARM_REL32) |
5654 | p->pc_count -= 1; | |
eb043451 PB |
5655 | if (p->count == 0) |
5656 | *pp = p->next; | |
5657 | break; | |
5658 | } | |
5659 | } | |
5660 | } | |
5661 | break; | |
5e681ec4 | 5662 | |
eb043451 PB |
5663 | default: |
5664 | break; | |
5665 | } | |
5666 | } | |
5e681ec4 | 5667 | |
b34976b6 | 5668 | return TRUE; |
252b5132 RH |
5669 | } |
5670 | ||
780a67af NC |
5671 | /* Look through the relocs for a section during the first phase. */ |
5672 | ||
b34976b6 | 5673 | static bfd_boolean |
57e8b36a NC |
5674 | elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info, |
5675 | asection *sec, const Elf_Internal_Rela *relocs) | |
252b5132 | 5676 | { |
b34976b6 AM |
5677 | Elf_Internal_Shdr *symtab_hdr; |
5678 | struct elf_link_hash_entry **sym_hashes; | |
5679 | struct elf_link_hash_entry **sym_hashes_end; | |
5680 | const Elf_Internal_Rela *rel; | |
5681 | const Elf_Internal_Rela *rel_end; | |
5682 | bfd *dynobj; | |
5e681ec4 | 5683 | asection *sreloc; |
b34976b6 | 5684 | bfd_vma *local_got_offsets; |
5e681ec4 | 5685 | struct elf32_arm_link_hash_table *htab; |
9a5aca8c | 5686 | |
1049f94e | 5687 | if (info->relocatable) |
b34976b6 | 5688 | return TRUE; |
9a5aca8c | 5689 | |
5e681ec4 PB |
5690 | htab = elf32_arm_hash_table (info); |
5691 | sreloc = NULL; | |
9a5aca8c | 5692 | |
67687978 PB |
5693 | /* Create dynamic sections for relocatable executables so that we can |
5694 | copy relocations. */ | |
5695 | if (htab->root.is_relocatable_executable | |
5696 | && ! htab->root.dynamic_sections_created) | |
5697 | { | |
5698 | if (! _bfd_elf_link_create_dynamic_sections (abfd, info)) | |
5699 | return FALSE; | |
5700 | } | |
5701 | ||
252b5132 RH |
5702 | dynobj = elf_hash_table (info)->dynobj; |
5703 | local_got_offsets = elf_local_got_offsets (abfd); | |
f21f3fe0 | 5704 | |
252b5132 RH |
5705 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
5706 | sym_hashes = elf_sym_hashes (abfd); | |
9b485d32 NC |
5707 | sym_hashes_end = sym_hashes |
5708 | + symtab_hdr->sh_size / sizeof (Elf32_External_Sym); | |
5709 | ||
252b5132 RH |
5710 | if (!elf_bad_symtab (abfd)) |
5711 | sym_hashes_end -= symtab_hdr->sh_info; | |
9b485d32 | 5712 | |
252b5132 RH |
5713 | rel_end = relocs + sec->reloc_count; |
5714 | for (rel = relocs; rel < rel_end; rel++) | |
5715 | { | |
5716 | struct elf_link_hash_entry *h; | |
b7693d02 | 5717 | struct elf32_arm_link_hash_entry *eh; |
252b5132 | 5718 | unsigned long r_symndx; |
eb043451 | 5719 | int r_type; |
9a5aca8c | 5720 | |
252b5132 | 5721 | r_symndx = ELF32_R_SYM (rel->r_info); |
eb043451 | 5722 | r_type = ELF32_R_TYPE (rel->r_info); |
eb043451 | 5723 | r_type = arm_real_reloc_type (htab, r_type); |
ba93b8ac DJ |
5724 | |
5725 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
5726 | { | |
5727 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd, | |
5728 | r_symndx); | |
5729 | return FALSE; | |
5730 | } | |
5731 | ||
252b5132 RH |
5732 | if (r_symndx < symtab_hdr->sh_info) |
5733 | h = NULL; | |
5734 | else | |
973a3492 L |
5735 | { |
5736 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
5737 | while (h->root.type == bfd_link_hash_indirect | |
5738 | || h->root.type == bfd_link_hash_warning) | |
5739 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5740 | } | |
9a5aca8c | 5741 | |
b7693d02 DJ |
5742 | eh = (struct elf32_arm_link_hash_entry *) h; |
5743 | ||
eb043451 | 5744 | switch (r_type) |
252b5132 | 5745 | { |
5e681ec4 | 5746 | case R_ARM_GOT32: |
eb043451 | 5747 | case R_ARM_GOT_PREL: |
ba93b8ac DJ |
5748 | case R_ARM_TLS_GD32: |
5749 | case R_ARM_TLS_IE32: | |
5e681ec4 | 5750 | /* This symbol requires a global offset table entry. */ |
ba93b8ac DJ |
5751 | { |
5752 | int tls_type, old_tls_type; | |
5e681ec4 | 5753 | |
ba93b8ac DJ |
5754 | switch (r_type) |
5755 | { | |
5756 | case R_ARM_TLS_GD32: tls_type = GOT_TLS_GD; break; | |
5757 | case R_ARM_TLS_IE32: tls_type = GOT_TLS_IE; break; | |
5758 | default: tls_type = GOT_NORMAL; break; | |
5759 | } | |
252b5132 | 5760 | |
ba93b8ac DJ |
5761 | if (h != NULL) |
5762 | { | |
5763 | h->got.refcount++; | |
5764 | old_tls_type = elf32_arm_hash_entry (h)->tls_type; | |
5765 | } | |
5766 | else | |
5767 | { | |
5768 | bfd_signed_vma *local_got_refcounts; | |
5769 | ||
5770 | /* This is a global offset table entry for a local symbol. */ | |
5771 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
5772 | if (local_got_refcounts == NULL) | |
5773 | { | |
5774 | bfd_size_type size; | |
5775 | ||
5776 | size = symtab_hdr->sh_info; | |
5777 | size *= (sizeof (bfd_signed_vma) + sizeof(char)); | |
5778 | local_got_refcounts = bfd_zalloc (abfd, size); | |
5779 | if (local_got_refcounts == NULL) | |
5780 | return FALSE; | |
5781 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
5782 | elf32_arm_local_got_tls_type (abfd) | |
5783 | = (char *) (local_got_refcounts + symtab_hdr->sh_info); | |
5784 | } | |
5785 | local_got_refcounts[r_symndx] += 1; | |
5786 | old_tls_type = elf32_arm_local_got_tls_type (abfd) [r_symndx]; | |
5787 | } | |
5788 | ||
5789 | /* We will already have issued an error message if there is a | |
5790 | TLS / non-TLS mismatch, based on the symbol type. We don't | |
5791 | support any linker relaxations. So just combine any TLS | |
5792 | types needed. */ | |
5793 | if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL | |
5794 | && tls_type != GOT_NORMAL) | |
5795 | tls_type |= old_tls_type; | |
5796 | ||
5797 | if (old_tls_type != tls_type) | |
5798 | { | |
5799 | if (h != NULL) | |
5800 | elf32_arm_hash_entry (h)->tls_type = tls_type; | |
5801 | else | |
5802 | elf32_arm_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
5803 | } | |
5804 | } | |
5805 | /* Fall through */ | |
5806 | ||
5807 | case R_ARM_TLS_LDM32: | |
5808 | if (r_type == R_ARM_TLS_LDM32) | |
5809 | htab->tls_ldm_got.refcount++; | |
5810 | /* Fall through */ | |
252b5132 | 5811 | |
c19d1205 | 5812 | case R_ARM_GOTOFF32: |
5e681ec4 PB |
5813 | case R_ARM_GOTPC: |
5814 | if (htab->sgot == NULL) | |
5815 | { | |
5816 | if (htab->root.dynobj == NULL) | |
5817 | htab->root.dynobj = abfd; | |
5818 | if (!create_got_section (htab->root.dynobj, info)) | |
5819 | return FALSE; | |
5820 | } | |
252b5132 RH |
5821 | break; |
5822 | ||
00a97672 RS |
5823 | case R_ARM_ABS12: |
5824 | /* VxWorks uses dynamic R_ARM_ABS12 relocations for | |
5825 | ldr __GOTT_INDEX__ offsets. */ | |
5826 | if (!htab->vxworks_p) | |
5827 | break; | |
5828 | /* Fall through */ | |
5829 | ||
252b5132 RH |
5830 | case R_ARM_ABS32: |
5831 | case R_ARM_REL32: | |
5832 | case R_ARM_PC24: | |
7359ea65 | 5833 | case R_ARM_PLT32: |
5b5bb741 PB |
5834 | case R_ARM_CALL: |
5835 | case R_ARM_JUMP24: | |
eb043451 | 5836 | case R_ARM_PREL31: |
c19d1205 | 5837 | case R_ARM_THM_CALL: |
b7693d02 | 5838 | /* Should the interworking branches be listed here? */ |
7359ea65 | 5839 | if (h != NULL) |
5e681ec4 PB |
5840 | { |
5841 | /* If this reloc is in a read-only section, we might | |
5842 | need a copy reloc. We can't check reliably at this | |
5843 | stage whether the section is read-only, as input | |
5844 | sections have not yet been mapped to output sections. | |
5845 | Tentatively set the flag for now, and correct in | |
5846 | adjust_dynamic_symbol. */ | |
7359ea65 | 5847 | if (!info->shared) |
f5385ebf | 5848 | h->non_got_ref = 1; |
7359ea65 | 5849 | |
5e681ec4 | 5850 | /* We may need a .plt entry if the function this reloc |
c84cd8ee DJ |
5851 | refers to is in a different object. We can't tell for |
5852 | sure yet, because something later might force the | |
5853 | symbol local. */ | |
eb043451 | 5854 | if (r_type == R_ARM_PC24 |
5b5bb741 PB |
5855 | || r_type == R_ARM_CALL |
5856 | || r_type == R_ARM_JUMP24 | |
ee06dc07 | 5857 | || r_type == R_ARM_PREL31 |
b7693d02 | 5858 | || r_type == R_ARM_PLT32 |
c19d1205 | 5859 | || r_type == R_ARM_THM_CALL) |
f5385ebf | 5860 | h->needs_plt = 1; |
4f199be3 DJ |
5861 | |
5862 | /* If we create a PLT entry, this relocation will reference | |
5863 | it, even if it's an ABS32 relocation. */ | |
5864 | h->plt.refcount += 1; | |
b7693d02 | 5865 | |
c19d1205 | 5866 | if (r_type == R_ARM_THM_CALL) |
b7693d02 | 5867 | eh->plt_thumb_refcount += 1; |
5e681ec4 PB |
5868 | } |
5869 | ||
67687978 PB |
5870 | /* If we are creating a shared library or relocatable executable, |
5871 | and this is a reloc against a global symbol, or a non PC | |
5872 | relative reloc against a local symbol, then we need to copy | |
5873 | the reloc into the shared library. However, if we are linking | |
5874 | with -Bsymbolic, we do not need to copy a reloc against a | |
252b5132 RH |
5875 | global symbol which is defined in an object we are |
5876 | including in the link (i.e., DEF_REGULAR is set). At | |
5877 | this point we have not seen all the input files, so it is | |
5878 | possible that DEF_REGULAR is not set now but will be set | |
5879 | later (it is never cleared). We account for that | |
5880 | possibility below by storing information in the | |
5e681ec4 | 5881 | relocs_copied field of the hash table entry. */ |
67687978 | 5882 | if ((info->shared || htab->root.is_relocatable_executable) |
5e681ec4 | 5883 | && (sec->flags & SEC_ALLOC) != 0 |
71a976dd DJ |
5884 | && (r_type == R_ARM_ABS32 |
5885 | || (h != NULL && ! h->needs_plt | |
5886 | && (! info->symbolic || ! h->def_regular)))) | |
252b5132 | 5887 | { |
5e681ec4 PB |
5888 | struct elf32_arm_relocs_copied *p, **head; |
5889 | ||
252b5132 RH |
5890 | /* When creating a shared object, we must copy these |
5891 | reloc types into the output file. We create a reloc | |
5892 | section in dynobj and make room for this reloc. */ | |
5893 | if (sreloc == NULL) | |
5894 | { | |
5895 | const char * name; | |
5896 | ||
5897 | name = (bfd_elf_string_from_elf_section | |
5898 | (abfd, | |
5899 | elf_elfheader (abfd)->e_shstrndx, | |
5900 | elf_section_data (sec)->rel_hdr.sh_name)); | |
5901 | if (name == NULL) | |
b34976b6 | 5902 | return FALSE; |
252b5132 | 5903 | |
00a97672 | 5904 | BFD_ASSERT (reloc_section_p (htab, name, sec)); |
252b5132 RH |
5905 | |
5906 | sreloc = bfd_get_section_by_name (dynobj, name); | |
5907 | if (sreloc == NULL) | |
5908 | { | |
5909 | flagword flags; | |
5910 | ||
252b5132 RH |
5911 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
5912 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
e5a52504 MM |
5913 | if ((sec->flags & SEC_ALLOC) != 0 |
5914 | /* BPABI objects never have dynamic | |
5915 | relocations mapped. */ | |
5916 | && !htab->symbian_p) | |
252b5132 | 5917 | flags |= SEC_ALLOC | SEC_LOAD; |
3496cb2a L |
5918 | sreloc = bfd_make_section_with_flags (dynobj, |
5919 | name, | |
5920 | flags); | |
252b5132 | 5921 | if (sreloc == NULL |
252b5132 | 5922 | || ! bfd_set_section_alignment (dynobj, sreloc, 2)) |
b34976b6 | 5923 | return FALSE; |
252b5132 | 5924 | } |
5e681ec4 PB |
5925 | |
5926 | elf_section_data (sec)->sreloc = sreloc; | |
252b5132 RH |
5927 | } |
5928 | ||
5e681ec4 PB |
5929 | /* If this is a global symbol, we count the number of |
5930 | relocations we need for this symbol. */ | |
5931 | if (h != NULL) | |
252b5132 | 5932 | { |
5e681ec4 PB |
5933 | head = &((struct elf32_arm_link_hash_entry *) h)->relocs_copied; |
5934 | } | |
5935 | else | |
5936 | { | |
5937 | /* Track dynamic relocs needed for local syms too. | |
5938 | We really need local syms available to do this | |
5939 | easily. Oh well. */ | |
57e8b36a | 5940 | |
5e681ec4 | 5941 | asection *s; |
6edfbbad DJ |
5942 | void *vpp; |
5943 | ||
5e681ec4 PB |
5944 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, |
5945 | sec, r_symndx); | |
5946 | if (s == NULL) | |
5947 | return FALSE; | |
57e8b36a | 5948 | |
6edfbbad DJ |
5949 | vpp = &elf_section_data (s)->local_dynrel; |
5950 | head = (struct elf32_arm_relocs_copied **) vpp; | |
5e681ec4 | 5951 | } |
57e8b36a | 5952 | |
5e681ec4 PB |
5953 | p = *head; |
5954 | if (p == NULL || p->section != sec) | |
5955 | { | |
5956 | bfd_size_type amt = sizeof *p; | |
57e8b36a | 5957 | |
5e681ec4 | 5958 | p = bfd_alloc (htab->root.dynobj, amt); |
252b5132 | 5959 | if (p == NULL) |
5e681ec4 PB |
5960 | return FALSE; |
5961 | p->next = *head; | |
5962 | *head = p; | |
5963 | p->section = sec; | |
5964 | p->count = 0; | |
ba93b8ac | 5965 | p->pc_count = 0; |
252b5132 | 5966 | } |
57e8b36a | 5967 | |
ba93b8ac DJ |
5968 | if (r_type == R_ARM_REL32) |
5969 | p->pc_count += 1; | |
71a976dd | 5970 | p->count += 1; |
252b5132 RH |
5971 | } |
5972 | break; | |
5973 | ||
5974 | /* This relocation describes the C++ object vtable hierarchy. | |
5975 | Reconstruct it for later use during GC. */ | |
5976 | case R_ARM_GNU_VTINHERIT: | |
c152c796 | 5977 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 5978 | return FALSE; |
252b5132 | 5979 | break; |
9a5aca8c | 5980 | |
252b5132 RH |
5981 | /* This relocation describes which C++ vtable entries are actually |
5982 | used. Record for later use during GC. */ | |
5983 | case R_ARM_GNU_VTENTRY: | |
c152c796 | 5984 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) |
b34976b6 | 5985 | return FALSE; |
252b5132 RH |
5986 | break; |
5987 | } | |
5988 | } | |
f21f3fe0 | 5989 | |
b34976b6 | 5990 | return TRUE; |
252b5132 RH |
5991 | } |
5992 | ||
3c9458e9 NC |
5993 | /* Treat mapping symbols as special target symbols. */ |
5994 | ||
5995 | static bfd_boolean | |
5996 | elf32_arm_is_target_special_symbol (bfd * abfd ATTRIBUTE_UNUSED, asymbol * sym) | |
5997 | { | |
05ea83ed | 5998 | return bfd_is_arm_mapping_symbol_name (sym->name); |
3c9458e9 NC |
5999 | } |
6000 | ||
0367ecfb NC |
6001 | /* This is a copy of elf_find_function() from elf.c except that |
6002 | ARM mapping symbols are ignored when looking for function names | |
6003 | and STT_ARM_TFUNC is considered to a function type. */ | |
252b5132 | 6004 | |
0367ecfb NC |
6005 | static bfd_boolean |
6006 | arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED, | |
6007 | asection * section, | |
6008 | asymbol ** symbols, | |
6009 | bfd_vma offset, | |
6010 | const char ** filename_ptr, | |
6011 | const char ** functionname_ptr) | |
6012 | { | |
6013 | const char * filename = NULL; | |
6014 | asymbol * func = NULL; | |
6015 | bfd_vma low_func = 0; | |
6016 | asymbol ** p; | |
252b5132 RH |
6017 | |
6018 | for (p = symbols; *p != NULL; p++) | |
6019 | { | |
6020 | elf_symbol_type *q; | |
6021 | ||
6022 | q = (elf_symbol_type *) *p; | |
6023 | ||
252b5132 RH |
6024 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) |
6025 | { | |
6026 | default: | |
6027 | break; | |
6028 | case STT_FILE: | |
6029 | filename = bfd_asymbol_name (&q->symbol); | |
6030 | break; | |
252b5132 RH |
6031 | case STT_FUNC: |
6032 | case STT_ARM_TFUNC: | |
9d2da7ca | 6033 | case STT_NOTYPE: |
0367ecfb NC |
6034 | /* Skip $a and $t symbols. */ |
6035 | if ((q->symbol.flags & BSF_LOCAL) | |
05ea83ed | 6036 | && bfd_is_arm_mapping_symbol_name (q->symbol.name)) |
0367ecfb NC |
6037 | continue; |
6038 | /* Fall through. */ | |
6b40fcba | 6039 | if (bfd_get_section (&q->symbol) == section |
252b5132 RH |
6040 | && q->symbol.value >= low_func |
6041 | && q->symbol.value <= offset) | |
6042 | { | |
6043 | func = (asymbol *) q; | |
6044 | low_func = q->symbol.value; | |
6045 | } | |
6046 | break; | |
6047 | } | |
6048 | } | |
6049 | ||
6050 | if (func == NULL) | |
b34976b6 | 6051 | return FALSE; |
252b5132 | 6052 | |
0367ecfb NC |
6053 | if (filename_ptr) |
6054 | *filename_ptr = filename; | |
6055 | if (functionname_ptr) | |
6056 | *functionname_ptr = bfd_asymbol_name (func); | |
6057 | ||
6058 | return TRUE; | |
6059 | } | |
6060 | ||
6061 | ||
6062 | /* Find the nearest line to a particular section and offset, for error | |
6063 | reporting. This code is a duplicate of the code in elf.c, except | |
6064 | that it uses arm_elf_find_function. */ | |
6065 | ||
6066 | static bfd_boolean | |
6067 | elf32_arm_find_nearest_line (bfd * abfd, | |
6068 | asection * section, | |
6069 | asymbol ** symbols, | |
6070 | bfd_vma offset, | |
6071 | const char ** filename_ptr, | |
6072 | const char ** functionname_ptr, | |
6073 | unsigned int * line_ptr) | |
6074 | { | |
6075 | bfd_boolean found = FALSE; | |
6076 | ||
6077 | /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */ | |
6078 | ||
6079 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
6080 | filename_ptr, functionname_ptr, | |
6081 | line_ptr, 0, | |
6082 | & elf_tdata (abfd)->dwarf2_find_line_info)) | |
6083 | { | |
6084 | if (!*functionname_ptr) | |
6085 | arm_elf_find_function (abfd, section, symbols, offset, | |
6086 | *filename_ptr ? NULL : filename_ptr, | |
6087 | functionname_ptr); | |
f21f3fe0 | 6088 | |
0367ecfb NC |
6089 | return TRUE; |
6090 | } | |
6091 | ||
6092 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
6093 | & found, filename_ptr, | |
6094 | functionname_ptr, line_ptr, | |
6095 | & elf_tdata (abfd)->line_info)) | |
6096 | return FALSE; | |
6097 | ||
6098 | if (found && (*functionname_ptr || *line_ptr)) | |
6099 | return TRUE; | |
6100 | ||
6101 | if (symbols == NULL) | |
6102 | return FALSE; | |
6103 | ||
6104 | if (! arm_elf_find_function (abfd, section, symbols, offset, | |
6105 | filename_ptr, functionname_ptr)) | |
6106 | return FALSE; | |
6107 | ||
6108 | *line_ptr = 0; | |
b34976b6 | 6109 | return TRUE; |
252b5132 RH |
6110 | } |
6111 | ||
4ab527b0 FF |
6112 | static bfd_boolean |
6113 | elf32_arm_find_inliner_info (bfd * abfd, | |
6114 | const char ** filename_ptr, | |
6115 | const char ** functionname_ptr, | |
6116 | unsigned int * line_ptr) | |
6117 | { | |
6118 | bfd_boolean found; | |
6119 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
6120 | functionname_ptr, line_ptr, | |
6121 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
6122 | return found; | |
6123 | } | |
6124 | ||
252b5132 RH |
6125 | /* Adjust a symbol defined by a dynamic object and referenced by a |
6126 | regular object. The current definition is in some section of the | |
6127 | dynamic object, but we're not including those sections. We have to | |
6128 | change the definition to something the rest of the link can | |
6129 | understand. */ | |
6130 | ||
b34976b6 | 6131 | static bfd_boolean |
57e8b36a NC |
6132 | elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info, |
6133 | struct elf_link_hash_entry * h) | |
252b5132 RH |
6134 | { |
6135 | bfd * dynobj; | |
6136 | asection * s; | |
6137 | unsigned int power_of_two; | |
b7693d02 | 6138 | struct elf32_arm_link_hash_entry * eh; |
67687978 | 6139 | struct elf32_arm_link_hash_table *globals; |
252b5132 | 6140 | |
67687978 | 6141 | globals = elf32_arm_hash_table (info); |
252b5132 RH |
6142 | dynobj = elf_hash_table (info)->dynobj; |
6143 | ||
6144 | /* Make sure we know what is going on here. */ | |
6145 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 6146 | && (h->needs_plt |
f6e332e6 | 6147 | || h->u.weakdef != NULL |
f5385ebf AM |
6148 | || (h->def_dynamic |
6149 | && h->ref_regular | |
6150 | && !h->def_regular))); | |
252b5132 | 6151 | |
b7693d02 DJ |
6152 | eh = (struct elf32_arm_link_hash_entry *) h; |
6153 | ||
252b5132 RH |
6154 | /* If this is a function, put it in the procedure linkage table. We |
6155 | will fill in the contents of the procedure linkage table later, | |
6156 | when we know the address of the .got section. */ | |
b7693d02 | 6157 | if (h->type == STT_FUNC || h->type == STT_ARM_TFUNC |
f5385ebf | 6158 | || h->needs_plt) |
252b5132 | 6159 | { |
5e681ec4 PB |
6160 | if (h->plt.refcount <= 0 |
6161 | || SYMBOL_CALLS_LOCAL (info, h) | |
6162 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
6163 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
6164 | { |
6165 | /* This case can occur if we saw a PLT32 reloc in an input | |
5e681ec4 PB |
6166 | file, but the symbol was never referred to by a dynamic |
6167 | object, or if all references were garbage collected. In | |
6168 | such a case, we don't actually need to build a procedure | |
6169 | linkage table, and we can just do a PC24 reloc instead. */ | |
6170 | h->plt.offset = (bfd_vma) -1; | |
b7693d02 | 6171 | eh->plt_thumb_refcount = 0; |
f5385ebf | 6172 | h->needs_plt = 0; |
252b5132 RH |
6173 | } |
6174 | ||
b34976b6 | 6175 | return TRUE; |
252b5132 | 6176 | } |
5e681ec4 | 6177 | else |
b7693d02 DJ |
6178 | { |
6179 | /* It's possible that we incorrectly decided a .plt reloc was | |
6180 | needed for an R_ARM_PC24 or similar reloc to a non-function sym | |
6181 | in check_relocs. We can't decide accurately between function | |
6182 | and non-function syms in check-relocs; Objects loaded later in | |
6183 | the link may change h->type. So fix it now. */ | |
6184 | h->plt.offset = (bfd_vma) -1; | |
6185 | eh->plt_thumb_refcount = 0; | |
6186 | } | |
252b5132 RH |
6187 | |
6188 | /* If this is a weak symbol, and there is a real definition, the | |
6189 | processor independent code will have arranged for us to see the | |
6190 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 6191 | if (h->u.weakdef != NULL) |
252b5132 | 6192 | { |
f6e332e6 AM |
6193 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
6194 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
6195 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
6196 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 6197 | return TRUE; |
252b5132 RH |
6198 | } |
6199 | ||
ba93b8ac DJ |
6200 | /* If there are no non-GOT references, we do not need a copy |
6201 | relocation. */ | |
6202 | if (!h->non_got_ref) | |
6203 | return TRUE; | |
6204 | ||
252b5132 RH |
6205 | /* This is a reference to a symbol defined by a dynamic object which |
6206 | is not a function. */ | |
6207 | ||
6208 | /* If we are creating a shared library, we must presume that the | |
6209 | only references to the symbol are via the global offset table. | |
6210 | For such cases we need not do anything here; the relocations will | |
67687978 PB |
6211 | be handled correctly by relocate_section. Relocatable executables |
6212 | can reference data in shared objects directly, so we don't need to | |
6213 | do anything here. */ | |
6214 | if (info->shared || globals->root.is_relocatable_executable) | |
b34976b6 | 6215 | return TRUE; |
252b5132 | 6216 | |
909272ee AM |
6217 | if (h->size == 0) |
6218 | { | |
6219 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
6220 | h->root.root.string); | |
6221 | return TRUE; | |
6222 | } | |
6223 | ||
252b5132 RH |
6224 | /* We must allocate the symbol in our .dynbss section, which will |
6225 | become part of the .bss section of the executable. There will be | |
6226 | an entry for this symbol in the .dynsym section. The dynamic | |
6227 | object will contain position independent code, so all references | |
6228 | from the dynamic object to this symbol will go through the global | |
6229 | offset table. The dynamic linker will use the .dynsym entry to | |
6230 | determine the address it must put in the global offset table, so | |
6231 | both the dynamic object and the regular object will refer to the | |
6232 | same memory location for the variable. */ | |
252b5132 RH |
6233 | s = bfd_get_section_by_name (dynobj, ".dynbss"); |
6234 | BFD_ASSERT (s != NULL); | |
6235 | ||
6236 | /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to | |
6237 | copy the initial value out of the dynamic object and into the | |
6238 | runtime process image. We need to remember the offset into the | |
00a97672 | 6239 | .rel(a).bss section we are going to use. */ |
252b5132 RH |
6240 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
6241 | { | |
6242 | asection *srel; | |
6243 | ||
00a97672 | 6244 | srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (globals, ".bss")); |
252b5132 | 6245 | BFD_ASSERT (srel != NULL); |
00a97672 | 6246 | srel->size += RELOC_SIZE (globals); |
f5385ebf | 6247 | h->needs_copy = 1; |
252b5132 RH |
6248 | } |
6249 | ||
6250 | /* We need to figure out the alignment required for this symbol. I | |
6251 | have no idea how ELF linkers handle this. */ | |
6252 | power_of_two = bfd_log2 (h->size); | |
6253 | if (power_of_two > 3) | |
6254 | power_of_two = 3; | |
6255 | ||
6256 | /* Apply the required alignment. */ | |
eea6121a | 6257 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
252b5132 RH |
6258 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) |
6259 | { | |
6260 | if (! bfd_set_section_alignment (dynobj, s, power_of_two)) | |
b34976b6 | 6261 | return FALSE; |
252b5132 RH |
6262 | } |
6263 | ||
6264 | /* Define the symbol as being at this point in the section. */ | |
6265 | h->root.u.def.section = s; | |
eea6121a | 6266 | h->root.u.def.value = s->size; |
252b5132 RH |
6267 | |
6268 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 6269 | s->size += h->size; |
252b5132 | 6270 | |
b34976b6 | 6271 | return TRUE; |
252b5132 RH |
6272 | } |
6273 | ||
5e681ec4 PB |
6274 | /* Allocate space in .plt, .got and associated reloc sections for |
6275 | dynamic relocs. */ | |
6276 | ||
6277 | static bfd_boolean | |
57e8b36a | 6278 | allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
5e681ec4 PB |
6279 | { |
6280 | struct bfd_link_info *info; | |
6281 | struct elf32_arm_link_hash_table *htab; | |
6282 | struct elf32_arm_link_hash_entry *eh; | |
6283 | struct elf32_arm_relocs_copied *p; | |
6284 | ||
b7693d02 DJ |
6285 | eh = (struct elf32_arm_link_hash_entry *) h; |
6286 | ||
5e681ec4 PB |
6287 | if (h->root.type == bfd_link_hash_indirect) |
6288 | return TRUE; | |
6289 | ||
6290 | if (h->root.type == bfd_link_hash_warning) | |
6291 | /* When warning symbols are created, they **replace** the "real" | |
6292 | entry in the hash table, thus we never get to see the real | |
6293 | symbol in a hash traversal. So look at it now. */ | |
6294 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6295 | ||
6296 | info = (struct bfd_link_info *) inf; | |
6297 | htab = elf32_arm_hash_table (info); | |
6298 | ||
6299 | if (htab->root.dynamic_sections_created | |
6300 | && h->plt.refcount > 0) | |
6301 | { | |
6302 | /* Make sure this symbol is output as a dynamic symbol. | |
6303 | Undefined weak syms won't yet be marked as dynamic. */ | |
6304 | if (h->dynindx == -1 | |
f5385ebf | 6305 | && !h->forced_local) |
5e681ec4 | 6306 | { |
c152c796 | 6307 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
6308 | return FALSE; |
6309 | } | |
6310 | ||
6311 | if (info->shared | |
7359ea65 | 6312 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
5e681ec4 PB |
6313 | { |
6314 | asection *s = htab->splt; | |
6315 | ||
6316 | /* If this is the first .plt entry, make room for the special | |
6317 | first entry. */ | |
eea6121a | 6318 | if (s->size == 0) |
e5a52504 | 6319 | s->size += htab->plt_header_size; |
5e681ec4 | 6320 | |
eea6121a | 6321 | h->plt.offset = s->size; |
5e681ec4 | 6322 | |
b7693d02 DJ |
6323 | /* If we will insert a Thumb trampoline before this PLT, leave room |
6324 | for it. */ | |
33bfe774 | 6325 | if (!htab->use_blx && eh->plt_thumb_refcount > 0) |
b7693d02 DJ |
6326 | { |
6327 | h->plt.offset += PLT_THUMB_STUB_SIZE; | |
6328 | s->size += PLT_THUMB_STUB_SIZE; | |
6329 | } | |
6330 | ||
5e681ec4 PB |
6331 | /* If this symbol is not defined in a regular file, and we are |
6332 | not generating a shared library, then set the symbol to this | |
6333 | location in the .plt. This is required to make function | |
6334 | pointers compare as equal between the normal executable and | |
6335 | the shared library. */ | |
6336 | if (! info->shared | |
f5385ebf | 6337 | && !h->def_regular) |
5e681ec4 PB |
6338 | { |
6339 | h->root.u.def.section = s; | |
6340 | h->root.u.def.value = h->plt.offset; | |
b7693d02 DJ |
6341 | |
6342 | /* Make sure the function is not marked as Thumb, in case | |
6343 | it is the target of an ABS32 relocation, which will | |
6344 | point to the PLT entry. */ | |
6345 | if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC) | |
6346 | h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC); | |
5e681ec4 PB |
6347 | } |
6348 | ||
6349 | /* Make room for this entry. */ | |
e5a52504 | 6350 | s->size += htab->plt_entry_size; |
5e681ec4 | 6351 | |
e5a52504 | 6352 | if (!htab->symbian_p) |
b7693d02 DJ |
6353 | { |
6354 | /* We also need to make an entry in the .got.plt section, which | |
6355 | will be placed in the .got section by the linker script. */ | |
6356 | eh->plt_got_offset = htab->sgotplt->size; | |
6357 | htab->sgotplt->size += 4; | |
6358 | } | |
5e681ec4 | 6359 | |
00a97672 RS |
6360 | /* We also need to make an entry in the .rel(a).plt section. */ |
6361 | htab->srelplt->size += RELOC_SIZE (htab); | |
6362 | ||
6363 | /* VxWorks executables have a second set of relocations for | |
6364 | each PLT entry. They go in a separate relocation section, | |
6365 | which is processed by the kernel loader. */ | |
6366 | if (htab->vxworks_p && !info->shared) | |
6367 | { | |
6368 | /* There is a relocation for the initial PLT entry: | |
6369 | an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */ | |
6370 | if (h->plt.offset == htab->plt_header_size) | |
6371 | htab->srelplt2->size += RELOC_SIZE (htab); | |
6372 | ||
6373 | /* There are two extra relocations for each subsequent | |
6374 | PLT entry: an R_ARM_32 relocation for the GOT entry, | |
6375 | and an R_ARM_32 relocation for the PLT entry. */ | |
6376 | htab->srelplt2->size += RELOC_SIZE (htab) * 2; | |
6377 | } | |
5e681ec4 PB |
6378 | } |
6379 | else | |
6380 | { | |
6381 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 6382 | h->needs_plt = 0; |
5e681ec4 PB |
6383 | } |
6384 | } | |
6385 | else | |
6386 | { | |
6387 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 6388 | h->needs_plt = 0; |
5e681ec4 PB |
6389 | } |
6390 | ||
6391 | if (h->got.refcount > 0) | |
6392 | { | |
6393 | asection *s; | |
6394 | bfd_boolean dyn; | |
ba93b8ac DJ |
6395 | int tls_type = elf32_arm_hash_entry (h)->tls_type; |
6396 | int indx; | |
5e681ec4 PB |
6397 | |
6398 | /* Make sure this symbol is output as a dynamic symbol. | |
6399 | Undefined weak syms won't yet be marked as dynamic. */ | |
6400 | if (h->dynindx == -1 | |
f5385ebf | 6401 | && !h->forced_local) |
5e681ec4 | 6402 | { |
c152c796 | 6403 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
6404 | return FALSE; |
6405 | } | |
6406 | ||
e5a52504 MM |
6407 | if (!htab->symbian_p) |
6408 | { | |
6409 | s = htab->sgot; | |
6410 | h->got.offset = s->size; | |
ba93b8ac DJ |
6411 | |
6412 | if (tls_type == GOT_UNKNOWN) | |
6413 | abort (); | |
6414 | ||
6415 | if (tls_type == GOT_NORMAL) | |
6416 | /* Non-TLS symbols need one GOT slot. */ | |
6417 | s->size += 4; | |
6418 | else | |
6419 | { | |
6420 | if (tls_type & GOT_TLS_GD) | |
6421 | /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */ | |
6422 | s->size += 8; | |
6423 | if (tls_type & GOT_TLS_IE) | |
6424 | /* R_ARM_TLS_IE32 needs one GOT slot. */ | |
6425 | s->size += 4; | |
6426 | } | |
6427 | ||
e5a52504 | 6428 | dyn = htab->root.dynamic_sections_created; |
ba93b8ac DJ |
6429 | |
6430 | indx = 0; | |
6431 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
6432 | && (!info->shared | |
6433 | || !SYMBOL_REFERENCES_LOCAL (info, h))) | |
6434 | indx = h->dynindx; | |
6435 | ||
6436 | if (tls_type != GOT_NORMAL | |
6437 | && (info->shared || indx != 0) | |
6438 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6439 | || h->root.type != bfd_link_hash_undefweak)) | |
6440 | { | |
6441 | if (tls_type & GOT_TLS_IE) | |
00a97672 | 6442 | htab->srelgot->size += RELOC_SIZE (htab); |
ba93b8ac DJ |
6443 | |
6444 | if (tls_type & GOT_TLS_GD) | |
00a97672 | 6445 | htab->srelgot->size += RELOC_SIZE (htab); |
ba93b8ac DJ |
6446 | |
6447 | if ((tls_type & GOT_TLS_GD) && indx != 0) | |
00a97672 | 6448 | htab->srelgot->size += RELOC_SIZE (htab); |
ba93b8ac DJ |
6449 | } |
6450 | else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6451 | || h->root.type != bfd_link_hash_undefweak) | |
6452 | && (info->shared | |
6453 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
00a97672 | 6454 | htab->srelgot->size += RELOC_SIZE (htab); |
e5a52504 | 6455 | } |
5e681ec4 PB |
6456 | } |
6457 | else | |
6458 | h->got.offset = (bfd_vma) -1; | |
6459 | ||
5e681ec4 PB |
6460 | if (eh->relocs_copied == NULL) |
6461 | return TRUE; | |
6462 | ||
6463 | /* In the shared -Bsymbolic case, discard space allocated for | |
6464 | dynamic pc-relative relocs against symbols which turn out to be | |
6465 | defined in regular objects. For the normal shared case, discard | |
6466 | space for pc-relative relocs that have become local due to symbol | |
6467 | visibility changes. */ | |
6468 | ||
67687978 | 6469 | if (info->shared || htab->root.is_relocatable_executable) |
5e681ec4 | 6470 | { |
ba93b8ac DJ |
6471 | /* The only reloc that uses pc_count is R_ARM_REL32, which will |
6472 | appear on something like ".long foo - .". We want calls to | |
6473 | protected symbols to resolve directly to the function rather | |
6474 | than going via the plt. If people want function pointer | |
6475 | comparisons to work as expected then they should avoid | |
6476 | writing assembly like ".long foo - .". */ | |
6477 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
6478 | { | |
6479 | struct elf32_arm_relocs_copied **pp; | |
6480 | ||
6481 | for (pp = &eh->relocs_copied; (p = *pp) != NULL; ) | |
6482 | { | |
6483 | p->count -= p->pc_count; | |
6484 | p->pc_count = 0; | |
6485 | if (p->count == 0) | |
6486 | *pp = p->next; | |
6487 | else | |
6488 | pp = &p->next; | |
6489 | } | |
6490 | } | |
6491 | ||
6492 | /* Also discard relocs on undefined weak syms with non-default | |
7359ea65 | 6493 | visibility. */ |
22d606e9 | 6494 | if (eh->relocs_copied != NULL |
5e681ec4 | 6495 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 AM |
6496 | { |
6497 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
6498 | eh->relocs_copied = NULL; | |
6499 | ||
6500 | /* Make sure undefined weak symbols are output as a dynamic | |
6501 | symbol in PIEs. */ | |
6502 | else if (h->dynindx == -1 | |
6503 | && !h->forced_local) | |
6504 | { | |
6505 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
6506 | return FALSE; | |
6507 | } | |
6508 | } | |
6509 | ||
67687978 PB |
6510 | else if (htab->root.is_relocatable_executable && h->dynindx == -1 |
6511 | && h->root.type == bfd_link_hash_new) | |
6512 | { | |
6513 | /* Output absolute symbols so that we can create relocations | |
6514 | against them. For normal symbols we output a relocation | |
6515 | against the section that contains them. */ | |
6516 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
6517 | return FALSE; | |
6518 | } | |
6519 | ||
5e681ec4 PB |
6520 | } |
6521 | else | |
6522 | { | |
6523 | /* For the non-shared case, discard space for relocs against | |
6524 | symbols which turn out to need copy relocs or are not | |
6525 | dynamic. */ | |
6526 | ||
f5385ebf AM |
6527 | if (!h->non_got_ref |
6528 | && ((h->def_dynamic | |
6529 | && !h->def_regular) | |
5e681ec4 PB |
6530 | || (htab->root.dynamic_sections_created |
6531 | && (h->root.type == bfd_link_hash_undefweak | |
6532 | || h->root.type == bfd_link_hash_undefined)))) | |
6533 | { | |
6534 | /* Make sure this symbol is output as a dynamic symbol. | |
6535 | Undefined weak syms won't yet be marked as dynamic. */ | |
6536 | if (h->dynindx == -1 | |
f5385ebf | 6537 | && !h->forced_local) |
5e681ec4 | 6538 | { |
c152c796 | 6539 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
6540 | return FALSE; |
6541 | } | |
6542 | ||
6543 | /* If that succeeded, we know we'll be keeping all the | |
6544 | relocs. */ | |
6545 | if (h->dynindx != -1) | |
6546 | goto keep; | |
6547 | } | |
6548 | ||
6549 | eh->relocs_copied = NULL; | |
6550 | ||
6551 | keep: ; | |
6552 | } | |
6553 | ||
6554 | /* Finally, allocate space. */ | |
6555 | for (p = eh->relocs_copied; p != NULL; p = p->next) | |
6556 | { | |
6557 | asection *sreloc = elf_section_data (p->section)->sreloc; | |
00a97672 | 6558 | sreloc->size += p->count * RELOC_SIZE (htab); |
5e681ec4 PB |
6559 | } |
6560 | ||
6561 | return TRUE; | |
6562 | } | |
6563 | ||
08d1f311 DJ |
6564 | /* Find any dynamic relocs that apply to read-only sections. */ |
6565 | ||
6566 | static bfd_boolean | |
6567 | elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry *h, PTR inf) | |
6568 | { | |
6569 | struct elf32_arm_link_hash_entry *eh; | |
6570 | struct elf32_arm_relocs_copied *p; | |
6571 | ||
6572 | if (h->root.type == bfd_link_hash_warning) | |
6573 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6574 | ||
6575 | eh = (struct elf32_arm_link_hash_entry *) h; | |
6576 | for (p = eh->relocs_copied; p != NULL; p = p->next) | |
6577 | { | |
6578 | asection *s = p->section; | |
6579 | ||
6580 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
6581 | { | |
6582 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
6583 | ||
6584 | info->flags |= DF_TEXTREL; | |
6585 | ||
6586 | /* Not an error, just cut short the traversal. */ | |
6587 | return FALSE; | |
6588 | } | |
6589 | } | |
6590 | return TRUE; | |
6591 | } | |
6592 | ||
252b5132 RH |
6593 | /* Set the sizes of the dynamic sections. */ |
6594 | ||
b34976b6 | 6595 | static bfd_boolean |
57e8b36a NC |
6596 | elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED, |
6597 | struct bfd_link_info * info) | |
252b5132 RH |
6598 | { |
6599 | bfd * dynobj; | |
6600 | asection * s; | |
b34976b6 AM |
6601 | bfd_boolean plt; |
6602 | bfd_boolean relocs; | |
5e681ec4 PB |
6603 | bfd *ibfd; |
6604 | struct elf32_arm_link_hash_table *htab; | |
252b5132 | 6605 | |
5e681ec4 | 6606 | htab = elf32_arm_hash_table (info); |
252b5132 RH |
6607 | dynobj = elf_hash_table (info)->dynobj; |
6608 | BFD_ASSERT (dynobj != NULL); | |
39b41c9c | 6609 | check_use_blx (htab); |
252b5132 RH |
6610 | |
6611 | if (elf_hash_table (info)->dynamic_sections_created) | |
6612 | { | |
6613 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 6614 | if (info->executable) |
252b5132 RH |
6615 | { |
6616 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
6617 | BFD_ASSERT (s != NULL); | |
eea6121a | 6618 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
252b5132 RH |
6619 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
6620 | } | |
6621 | } | |
5e681ec4 PB |
6622 | |
6623 | /* Set up .got offsets for local syms, and space for local dynamic | |
6624 | relocs. */ | |
6625 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
252b5132 | 6626 | { |
5e681ec4 PB |
6627 | bfd_signed_vma *local_got; |
6628 | bfd_signed_vma *end_local_got; | |
6629 | char *local_tls_type; | |
6630 | bfd_size_type locsymcount; | |
6631 | Elf_Internal_Shdr *symtab_hdr; | |
6632 | asection *srel; | |
6633 | ||
6634 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) | |
6635 | continue; | |
6636 | ||
6637 | for (s = ibfd->sections; s != NULL; s = s->next) | |
6638 | { | |
6639 | struct elf32_arm_relocs_copied *p; | |
6640 | ||
6edfbbad | 6641 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
5e681ec4 PB |
6642 | { |
6643 | if (!bfd_is_abs_section (p->section) | |
6644 | && bfd_is_abs_section (p->section->output_section)) | |
6645 | { | |
6646 | /* Input section has been discarded, either because | |
6647 | it is a copy of a linkonce section or due to | |
6648 | linker script /DISCARD/, so we'll be discarding | |
6649 | the relocs too. */ | |
6650 | } | |
6651 | else if (p->count != 0) | |
6652 | { | |
6653 | srel = elf_section_data (p->section)->sreloc; | |
00a97672 | 6654 | srel->size += p->count * RELOC_SIZE (htab); |
5e681ec4 PB |
6655 | if ((p->section->output_section->flags & SEC_READONLY) != 0) |
6656 | info->flags |= DF_TEXTREL; | |
6657 | } | |
6658 | } | |
6659 | } | |
6660 | ||
6661 | local_got = elf_local_got_refcounts (ibfd); | |
6662 | if (!local_got) | |
6663 | continue; | |
6664 | ||
6665 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
6666 | locsymcount = symtab_hdr->sh_info; | |
6667 | end_local_got = local_got + locsymcount; | |
ba93b8ac | 6668 | local_tls_type = elf32_arm_local_got_tls_type (ibfd); |
5e681ec4 PB |
6669 | s = htab->sgot; |
6670 | srel = htab->srelgot; | |
6671 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) | |
6672 | { | |
6673 | if (*local_got > 0) | |
6674 | { | |
eea6121a | 6675 | *local_got = s->size; |
ba93b8ac DJ |
6676 | if (*local_tls_type & GOT_TLS_GD) |
6677 | /* TLS_GD relocs need an 8-byte structure in the GOT. */ | |
6678 | s->size += 8; | |
6679 | if (*local_tls_type & GOT_TLS_IE) | |
6680 | s->size += 4; | |
6681 | if (*local_tls_type == GOT_NORMAL) | |
6682 | s->size += 4; | |
6683 | ||
6684 | if (info->shared || *local_tls_type == GOT_TLS_GD) | |
00a97672 | 6685 | srel->size += RELOC_SIZE (htab); |
5e681ec4 PB |
6686 | } |
6687 | else | |
6688 | *local_got = (bfd_vma) -1; | |
6689 | } | |
252b5132 RH |
6690 | } |
6691 | ||
ba93b8ac DJ |
6692 | if (htab->tls_ldm_got.refcount > 0) |
6693 | { | |
6694 | /* Allocate two GOT entries and one dynamic relocation (if necessary) | |
6695 | for R_ARM_TLS_LDM32 relocations. */ | |
6696 | htab->tls_ldm_got.offset = htab->sgot->size; | |
6697 | htab->sgot->size += 8; | |
6698 | if (info->shared) | |
00a97672 | 6699 | htab->srelgot->size += RELOC_SIZE (htab); |
ba93b8ac DJ |
6700 | } |
6701 | else | |
6702 | htab->tls_ldm_got.offset = -1; | |
6703 | ||
5e681ec4 PB |
6704 | /* Allocate global sym .plt and .got entries, and space for global |
6705 | sym dynamic relocs. */ | |
57e8b36a | 6706 | elf_link_hash_traverse (& htab->root, allocate_dynrelocs, info); |
252b5132 RH |
6707 | |
6708 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
6709 | determined the sizes of the various dynamic sections. Allocate | |
6710 | memory for them. */ | |
b34976b6 AM |
6711 | plt = FALSE; |
6712 | relocs = FALSE; | |
252b5132 RH |
6713 | for (s = dynobj->sections; s != NULL; s = s->next) |
6714 | { | |
6715 | const char * name; | |
252b5132 RH |
6716 | |
6717 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
6718 | continue; | |
6719 | ||
6720 | /* It's OK to base decisions on the section name, because none | |
6721 | of the dynobj section names depend upon the input files. */ | |
6722 | name = bfd_get_section_name (dynobj, s); | |
6723 | ||
24a1ba0f | 6724 | if (strcmp (name, ".plt") == 0) |
252b5132 | 6725 | { |
c456f082 AM |
6726 | /* Remember whether there is a PLT. */ |
6727 | plt = s->size != 0; | |
252b5132 RH |
6728 | } |
6729 | else if (strncmp (name, ".rel", 4) == 0) | |
6730 | { | |
c456f082 | 6731 | if (s->size != 0) |
252b5132 | 6732 | { |
252b5132 | 6733 | /* Remember whether there are any reloc sections other |
00a97672 RS |
6734 | than .rel(a).plt and .rela.plt.unloaded. */ |
6735 | if (s != htab->srelplt && s != htab->srelplt2) | |
b34976b6 | 6736 | relocs = TRUE; |
252b5132 RH |
6737 | |
6738 | /* We use the reloc_count field as a counter if we need | |
6739 | to copy relocs into the output file. */ | |
6740 | s->reloc_count = 0; | |
6741 | } | |
6742 | } | |
c456f082 AM |
6743 | else if (strncmp (name, ".got", 4) != 0 |
6744 | && strcmp (name, ".dynbss") != 0) | |
252b5132 RH |
6745 | { |
6746 | /* It's not one of our sections, so don't allocate space. */ | |
6747 | continue; | |
6748 | } | |
6749 | ||
c456f082 | 6750 | if (s->size == 0) |
252b5132 | 6751 | { |
c456f082 | 6752 | /* If we don't need this section, strip it from the |
00a97672 RS |
6753 | output file. This is mostly to handle .rel(a).bss and |
6754 | .rel(a).plt. We must create both sections in | |
c456f082 AM |
6755 | create_dynamic_sections, because they must be created |
6756 | before the linker maps input sections to output | |
6757 | sections. The linker does that before | |
6758 | adjust_dynamic_symbol is called, and it is that | |
6759 | function which decides whether anything needs to go | |
6760 | into these sections. */ | |
8423293d | 6761 | s->flags |= SEC_EXCLUDE; |
252b5132 RH |
6762 | continue; |
6763 | } | |
6764 | ||
c456f082 AM |
6765 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
6766 | continue; | |
6767 | ||
252b5132 | 6768 | /* Allocate memory for the section contents. */ |
eea6121a | 6769 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
c456f082 | 6770 | if (s->contents == NULL) |
b34976b6 | 6771 | return FALSE; |
252b5132 RH |
6772 | } |
6773 | ||
6774 | if (elf_hash_table (info)->dynamic_sections_created) | |
6775 | { | |
6776 | /* Add some entries to the .dynamic section. We fill in the | |
6777 | values later, in elf32_arm_finish_dynamic_sections, but we | |
6778 | must add the entries now so that we get the correct size for | |
6779 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
6780 | dynamic linker and used by the debugger. */ | |
dc810e39 | 6781 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 6782 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 6783 | |
8532796c | 6784 | if (info->executable) |
252b5132 | 6785 | { |
dc810e39 | 6786 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 6787 | return FALSE; |
252b5132 RH |
6788 | } |
6789 | ||
6790 | if (plt) | |
6791 | { | |
dc810e39 AM |
6792 | if ( !add_dynamic_entry (DT_PLTGOT, 0) |
6793 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
00a97672 RS |
6794 | || !add_dynamic_entry (DT_PLTREL, |
6795 | htab->use_rel ? DT_REL : DT_RELA) | |
dc810e39 | 6796 | || !add_dynamic_entry (DT_JMPREL, 0)) |
b34976b6 | 6797 | return FALSE; |
252b5132 RH |
6798 | } |
6799 | ||
6800 | if (relocs) | |
6801 | { | |
00a97672 RS |
6802 | if (htab->use_rel) |
6803 | { | |
6804 | if (!add_dynamic_entry (DT_REL, 0) | |
6805 | || !add_dynamic_entry (DT_RELSZ, 0) | |
6806 | || !add_dynamic_entry (DT_RELENT, RELOC_SIZE (htab))) | |
6807 | return FALSE; | |
6808 | } | |
6809 | else | |
6810 | { | |
6811 | if (!add_dynamic_entry (DT_RELA, 0) | |
6812 | || !add_dynamic_entry (DT_RELASZ, 0) | |
6813 | || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab))) | |
6814 | return FALSE; | |
6815 | } | |
252b5132 RH |
6816 | } |
6817 | ||
08d1f311 DJ |
6818 | /* If any dynamic relocs apply to a read-only section, |
6819 | then we need a DT_TEXTREL entry. */ | |
6820 | if ((info->flags & DF_TEXTREL) == 0) | |
6821 | elf_link_hash_traverse (&htab->root, elf32_arm_readonly_dynrelocs, | |
6822 | (PTR) info); | |
6823 | ||
99e4ae17 | 6824 | if ((info->flags & DF_TEXTREL) != 0) |
252b5132 | 6825 | { |
dc810e39 | 6826 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 6827 | return FALSE; |
252b5132 RH |
6828 | } |
6829 | } | |
8532796c | 6830 | #undef add_dynamic_entry |
252b5132 | 6831 | |
b34976b6 | 6832 | return TRUE; |
252b5132 RH |
6833 | } |
6834 | ||
252b5132 RH |
6835 | /* Finish up dynamic symbol handling. We set the contents of various |
6836 | dynamic sections here. */ | |
6837 | ||
b34976b6 | 6838 | static bfd_boolean |
57e8b36a NC |
6839 | elf32_arm_finish_dynamic_symbol (bfd * output_bfd, struct bfd_link_info * info, |
6840 | struct elf_link_hash_entry * h, Elf_Internal_Sym * sym) | |
252b5132 RH |
6841 | { |
6842 | bfd * dynobj; | |
e5a52504 | 6843 | struct elf32_arm_link_hash_table *htab; |
b7693d02 | 6844 | struct elf32_arm_link_hash_entry *eh; |
252b5132 RH |
6845 | |
6846 | dynobj = elf_hash_table (info)->dynobj; | |
e5a52504 | 6847 | htab = elf32_arm_hash_table (info); |
b7693d02 | 6848 | eh = (struct elf32_arm_link_hash_entry *) h; |
252b5132 RH |
6849 | |
6850 | if (h->plt.offset != (bfd_vma) -1) | |
6851 | { | |
6852 | asection * splt; | |
252b5132 | 6853 | asection * srel; |
e5a52504 | 6854 | bfd_byte *loc; |
24a1ba0f | 6855 | bfd_vma plt_index; |
947216bf | 6856 | Elf_Internal_Rela rel; |
252b5132 RH |
6857 | |
6858 | /* This symbol has an entry in the procedure linkage table. Set | |
6859 | it up. */ | |
6860 | ||
6861 | BFD_ASSERT (h->dynindx != -1); | |
6862 | ||
6863 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
00a97672 | 6864 | srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".plt")); |
e5a52504 | 6865 | BFD_ASSERT (splt != NULL && srel != NULL); |
252b5132 | 6866 | |
e5a52504 MM |
6867 | /* Fill in the entry in the procedure linkage table. */ |
6868 | if (htab->symbian_p) | |
6869 | { | |
6870 | unsigned i; | |
6871 | for (i = 0; i < htab->plt_entry_size / 4; ++i) | |
6872 | bfd_put_32 (output_bfd, | |
6873 | elf32_arm_symbian_plt_entry[i], | |
6874 | splt->contents + h->plt.offset + 4 * i); | |
6875 | ||
6876 | /* Fill in the entry in the .rel.plt section. */ | |
2a1b9a48 MM |
6877 | rel.r_offset = (splt->output_section->vma |
6878 | + splt->output_offset | |
e5a52504 MM |
6879 | + h->plt.offset + 4 * (i - 1)); |
6880 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT); | |
b7693d02 DJ |
6881 | |
6882 | /* Get the index in the procedure linkage table which | |
6883 | corresponds to this symbol. This is the index of this symbol | |
6884 | in all the symbols for which we are making plt entries. The | |
6885 | first entry in the procedure linkage table is reserved. */ | |
6886 | plt_index = ((h->plt.offset - htab->plt_header_size) | |
6887 | / htab->plt_entry_size); | |
e5a52504 MM |
6888 | } |
6889 | else | |
6890 | { | |
00a97672 | 6891 | bfd_vma got_offset, got_address, plt_address; |
e5a52504 MM |
6892 | bfd_vma got_displacement; |
6893 | asection * sgot; | |
6894 | ||
6895 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
6896 | BFD_ASSERT (sgot != NULL); | |
6897 | ||
b7693d02 DJ |
6898 | /* Get the offset into the .got.plt table of the entry that |
6899 | corresponds to this function. */ | |
6900 | got_offset = eh->plt_got_offset; | |
6901 | ||
6902 | /* Get the index in the procedure linkage table which | |
6903 | corresponds to this symbol. This is the index of this symbol | |
6904 | in all the symbols for which we are making plt entries. The | |
6905 | first three entries in .got.plt are reserved; after that | |
6906 | symbols appear in the same order as in .plt. */ | |
6907 | plt_index = (got_offset - 12) / 4; | |
e5a52504 | 6908 | |
00a97672 RS |
6909 | /* Calculate the address of the GOT entry. */ |
6910 | got_address = (sgot->output_section->vma | |
6911 | + sgot->output_offset | |
6912 | + got_offset); | |
5e681ec4 | 6913 | |
00a97672 RS |
6914 | /* ...and the address of the PLT entry. */ |
6915 | plt_address = (splt->output_section->vma | |
6916 | + splt->output_offset | |
6917 | + h->plt.offset); | |
5e681ec4 | 6918 | |
00a97672 RS |
6919 | if (htab->vxworks_p && info->shared) |
6920 | { | |
6921 | unsigned int i; | |
6922 | bfd_vma val; | |
6923 | ||
6924 | for (i = 0; i != htab->plt_entry_size / 4; i++) | |
6925 | { | |
6926 | val = elf32_arm_vxworks_shared_plt_entry[i]; | |
6927 | if (i == 2) | |
6928 | val |= got_address - sgot->output_section->vma; | |
6929 | if (i == 5) | |
6930 | val |= plt_index * RELOC_SIZE (htab); | |
6931 | bfd_put_32 (output_bfd, val, | |
6932 | htab->splt->contents + h->plt.offset + i * 4); | |
6933 | } | |
6934 | } | |
6935 | else if (htab->vxworks_p) | |
b7693d02 | 6936 | { |
00a97672 RS |
6937 | unsigned int i; |
6938 | bfd_vma val; | |
6939 | ||
6940 | for (i = 0; i != htab->plt_entry_size / 4; i++) | |
6941 | { | |
6942 | val = elf32_arm_vxworks_exec_plt_entry[i]; | |
6943 | if (i == 2) | |
6944 | val |= got_address; | |
6945 | if (i == 4) | |
6946 | val |= 0xffffff & -((h->plt.offset + i * 4 + 8) >> 2); | |
6947 | if (i == 5) | |
6948 | val |= plt_index * RELOC_SIZE (htab); | |
6949 | bfd_put_32 (output_bfd, val, | |
6950 | htab->splt->contents + h->plt.offset + i * 4); | |
6951 | } | |
6952 | ||
6953 | loc = (htab->srelplt2->contents | |
6954 | + (plt_index * 2 + 1) * RELOC_SIZE (htab)); | |
6955 | ||
6956 | /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation | |
6957 | referencing the GOT for this PLT entry. */ | |
6958 | rel.r_offset = plt_address + 8; | |
6959 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); | |
6960 | rel.r_addend = got_offset; | |
6961 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
6962 | loc += RELOC_SIZE (htab); | |
6963 | ||
6964 | /* Create the R_ARM_ABS32 relocation referencing the | |
6965 | beginning of the PLT for this GOT entry. */ | |
6966 | rel.r_offset = got_address; | |
6967 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32); | |
6968 | rel.r_addend = 0; | |
6969 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
b7693d02 | 6970 | } |
00a97672 RS |
6971 | else |
6972 | { | |
6973 | /* Calculate the displacement between the PLT slot and the | |
6974 | entry in the GOT. The eight-byte offset accounts for the | |
6975 | value produced by adding to pc in the first instruction | |
6976 | of the PLT stub. */ | |
6977 | got_displacement = got_address - (plt_address + 8); | |
b7693d02 | 6978 | |
00a97672 RS |
6979 | BFD_ASSERT ((got_displacement & 0xf0000000) == 0); |
6980 | ||
6981 | if (!htab->use_blx && eh->plt_thumb_refcount > 0) | |
6982 | { | |
6983 | bfd_put_16 (output_bfd, elf32_arm_plt_thumb_stub[0], | |
6984 | splt->contents + h->plt.offset - 4); | |
6985 | bfd_put_16 (output_bfd, elf32_arm_plt_thumb_stub[1], | |
6986 | splt->contents + h->plt.offset - 2); | |
6987 | } | |
6988 | ||
6989 | bfd_put_32 (output_bfd, | |
6990 | elf32_arm_plt_entry[0] | |
6991 | | ((got_displacement & 0x0ff00000) >> 20), | |
6992 | splt->contents + h->plt.offset + 0); | |
6993 | bfd_put_32 (output_bfd, | |
6994 | elf32_arm_plt_entry[1] | |
6995 | | ((got_displacement & 0x000ff000) >> 12), | |
6996 | splt->contents + h->plt.offset + 4); | |
6997 | bfd_put_32 (output_bfd, | |
6998 | elf32_arm_plt_entry[2] | |
6999 | | (got_displacement & 0x00000fff), | |
7000 | splt->contents + h->plt.offset + 8); | |
5e681ec4 | 7001 | #ifdef FOUR_WORD_PLT |
00a97672 RS |
7002 | bfd_put_32 (output_bfd, elf32_arm_plt_entry[3], |
7003 | splt->contents + h->plt.offset + 12); | |
5e681ec4 | 7004 | #endif |
00a97672 | 7005 | } |
252b5132 | 7006 | |
e5a52504 MM |
7007 | /* Fill in the entry in the global offset table. */ |
7008 | bfd_put_32 (output_bfd, | |
7009 | (splt->output_section->vma | |
7010 | + splt->output_offset), | |
7011 | sgot->contents + got_offset); | |
7012 | ||
00a97672 RS |
7013 | /* Fill in the entry in the .rel(a).plt section. */ |
7014 | rel.r_addend = 0; | |
7015 | rel.r_offset = got_address; | |
e5a52504 MM |
7016 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_JUMP_SLOT); |
7017 | } | |
57e8b36a | 7018 | |
00a97672 RS |
7019 | loc = srel->contents + plt_index * RELOC_SIZE (htab); |
7020 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
252b5132 | 7021 | |
f5385ebf | 7022 | if (!h->def_regular) |
252b5132 RH |
7023 | { |
7024 | /* Mark the symbol as undefined, rather than as defined in | |
7025 | the .plt section. Leave the value alone. */ | |
7026 | sym->st_shndx = SHN_UNDEF; | |
d982ba73 PB |
7027 | /* If the symbol is weak, we do need to clear the value. |
7028 | Otherwise, the PLT entry would provide a definition for | |
7029 | the symbol even if the symbol wasn't defined anywhere, | |
7030 | and so the symbol would never be NULL. */ | |
f5385ebf | 7031 | if (!h->ref_regular_nonweak) |
d982ba73 | 7032 | sym->st_value = 0; |
252b5132 RH |
7033 | } |
7034 | } | |
7035 | ||
ba93b8ac DJ |
7036 | if (h->got.offset != (bfd_vma) -1 |
7037 | && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_GD) == 0 | |
7038 | && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_IE) == 0) | |
252b5132 RH |
7039 | { |
7040 | asection * sgot; | |
7041 | asection * srel; | |
947216bf AM |
7042 | Elf_Internal_Rela rel; |
7043 | bfd_byte *loc; | |
00a97672 | 7044 | bfd_vma offset; |
252b5132 RH |
7045 | |
7046 | /* This symbol has an entry in the global offset table. Set it | |
7047 | up. */ | |
252b5132 | 7048 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
00a97672 | 7049 | srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".got")); |
252b5132 RH |
7050 | BFD_ASSERT (sgot != NULL && srel != NULL); |
7051 | ||
00a97672 RS |
7052 | offset = (h->got.offset & ~(bfd_vma) 1); |
7053 | rel.r_addend = 0; | |
252b5132 RH |
7054 | rel.r_offset = (sgot->output_section->vma |
7055 | + sgot->output_offset | |
00a97672 | 7056 | + offset); |
252b5132 | 7057 | |
5e681ec4 PB |
7058 | /* If this is a static link, or it is a -Bsymbolic link and the |
7059 | symbol is defined locally or was forced to be local because | |
7060 | of a version file, we just want to emit a RELATIVE reloc. | |
7061 | The entry in the global offset table will already have been | |
7062 | initialized in the relocate_section function. */ | |
252b5132 | 7063 | if (info->shared |
5e681ec4 PB |
7064 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
7065 | { | |
7066 | BFD_ASSERT((h->got.offset & 1) != 0); | |
7067 | rel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); | |
00a97672 RS |
7068 | if (!htab->use_rel) |
7069 | { | |
7070 | rel.r_addend = bfd_get_32 (output_bfd, sgot->contents + offset); | |
7071 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset); | |
7072 | } | |
5e681ec4 | 7073 | } |
252b5132 RH |
7074 | else |
7075 | { | |
5e681ec4 | 7076 | BFD_ASSERT((h->got.offset & 1) == 0); |
00a97672 | 7077 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset); |
252b5132 RH |
7078 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT); |
7079 | } | |
7080 | ||
00a97672 RS |
7081 | loc = srel->contents + srel->reloc_count++ * RELOC_SIZE (htab); |
7082 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
252b5132 RH |
7083 | } |
7084 | ||
f5385ebf | 7085 | if (h->needs_copy) |
252b5132 RH |
7086 | { |
7087 | asection * s; | |
947216bf AM |
7088 | Elf_Internal_Rela rel; |
7089 | bfd_byte *loc; | |
252b5132 RH |
7090 | |
7091 | /* This symbol needs a copy reloc. Set it up. */ | |
252b5132 RH |
7092 | BFD_ASSERT (h->dynindx != -1 |
7093 | && (h->root.type == bfd_link_hash_defined | |
7094 | || h->root.type == bfd_link_hash_defweak)); | |
7095 | ||
7096 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
00a97672 | 7097 | RELOC_SECTION (htab, ".bss")); |
252b5132 RH |
7098 | BFD_ASSERT (s != NULL); |
7099 | ||
00a97672 | 7100 | rel.r_addend = 0; |
252b5132 RH |
7101 | rel.r_offset = (h->root.u.def.value |
7102 | + h->root.u.def.section->output_section->vma | |
7103 | + h->root.u.def.section->output_offset); | |
7104 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY); | |
00a97672 RS |
7105 | loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab); |
7106 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
252b5132 RH |
7107 | } |
7108 | ||
00a97672 RS |
7109 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks, |
7110 | the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative | |
7111 | to the ".got" section. */ | |
252b5132 | 7112 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 |
00a97672 | 7113 | || (!htab->vxworks_p && h == htab->root.hgot)) |
252b5132 RH |
7114 | sym->st_shndx = SHN_ABS; |
7115 | ||
b34976b6 | 7116 | return TRUE; |
252b5132 RH |
7117 | } |
7118 | ||
7119 | /* Finish up the dynamic sections. */ | |
7120 | ||
b34976b6 | 7121 | static bfd_boolean |
57e8b36a | 7122 | elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info) |
252b5132 RH |
7123 | { |
7124 | bfd * dynobj; | |
7125 | asection * sgot; | |
7126 | asection * sdyn; | |
7127 | ||
7128 | dynobj = elf_hash_table (info)->dynobj; | |
7129 | ||
7130 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
229fcec5 | 7131 | BFD_ASSERT (elf32_arm_hash_table (info)->symbian_p || sgot != NULL); |
252b5132 RH |
7132 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
7133 | ||
7134 | if (elf_hash_table (info)->dynamic_sections_created) | |
7135 | { | |
7136 | asection *splt; | |
7137 | Elf32_External_Dyn *dyncon, *dynconend; | |
229fcec5 | 7138 | struct elf32_arm_link_hash_table *htab; |
252b5132 | 7139 | |
229fcec5 | 7140 | htab = elf32_arm_hash_table (info); |
252b5132 | 7141 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
24a1ba0f | 7142 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
252b5132 RH |
7143 | |
7144 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 7145 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
9b485d32 | 7146 | |
252b5132 RH |
7147 | for (; dyncon < dynconend; dyncon++) |
7148 | { | |
7149 | Elf_Internal_Dyn dyn; | |
7150 | const char * name; | |
7151 | asection * s; | |
7152 | ||
7153 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
7154 | ||
7155 | switch (dyn.d_tag) | |
7156 | { | |
229fcec5 MM |
7157 | unsigned int type; |
7158 | ||
252b5132 RH |
7159 | default: |
7160 | break; | |
7161 | ||
229fcec5 MM |
7162 | case DT_HASH: |
7163 | name = ".hash"; | |
7164 | goto get_vma_if_bpabi; | |
7165 | case DT_STRTAB: | |
7166 | name = ".dynstr"; | |
7167 | goto get_vma_if_bpabi; | |
7168 | case DT_SYMTAB: | |
7169 | name = ".dynsym"; | |
7170 | goto get_vma_if_bpabi; | |
c0042f5d MM |
7171 | case DT_VERSYM: |
7172 | name = ".gnu.version"; | |
7173 | goto get_vma_if_bpabi; | |
7174 | case DT_VERDEF: | |
7175 | name = ".gnu.version_d"; | |
7176 | goto get_vma_if_bpabi; | |
7177 | case DT_VERNEED: | |
7178 | name = ".gnu.version_r"; | |
7179 | goto get_vma_if_bpabi; | |
7180 | ||
252b5132 RH |
7181 | case DT_PLTGOT: |
7182 | name = ".got"; | |
7183 | goto get_vma; | |
7184 | case DT_JMPREL: | |
00a97672 | 7185 | name = RELOC_SECTION (htab, ".plt"); |
252b5132 RH |
7186 | get_vma: |
7187 | s = bfd_get_section_by_name (output_bfd, name); | |
7188 | BFD_ASSERT (s != NULL); | |
229fcec5 MM |
7189 | if (!htab->symbian_p) |
7190 | dyn.d_un.d_ptr = s->vma; | |
7191 | else | |
7192 | /* In the BPABI, tags in the PT_DYNAMIC section point | |
7193 | at the file offset, not the memory address, for the | |
7194 | convenience of the post linker. */ | |
7195 | dyn.d_un.d_ptr = s->filepos; | |
252b5132 RH |
7196 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
7197 | break; | |
7198 | ||
229fcec5 MM |
7199 | get_vma_if_bpabi: |
7200 | if (htab->symbian_p) | |
7201 | goto get_vma; | |
7202 | break; | |
7203 | ||
252b5132 | 7204 | case DT_PLTRELSZ: |
00a97672 RS |
7205 | s = bfd_get_section_by_name (output_bfd, |
7206 | RELOC_SECTION (htab, ".plt")); | |
252b5132 | 7207 | BFD_ASSERT (s != NULL); |
eea6121a | 7208 | dyn.d_un.d_val = s->size; |
252b5132 RH |
7209 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
7210 | break; | |
229fcec5 | 7211 | |
252b5132 | 7212 | case DT_RELSZ: |
00a97672 | 7213 | case DT_RELASZ: |
229fcec5 MM |
7214 | if (!htab->symbian_p) |
7215 | { | |
7216 | /* My reading of the SVR4 ABI indicates that the | |
7217 | procedure linkage table relocs (DT_JMPREL) should be | |
7218 | included in the overall relocs (DT_REL). This is | |
7219 | what Solaris does. However, UnixWare can not handle | |
7220 | that case. Therefore, we override the DT_RELSZ entry | |
7221 | here to make it not include the JMPREL relocs. Since | |
00a97672 | 7222 | the linker script arranges for .rel(a).plt to follow all |
229fcec5 MM |
7223 | other relocation sections, we don't have to worry |
7224 | about changing the DT_REL entry. */ | |
00a97672 RS |
7225 | s = bfd_get_section_by_name (output_bfd, |
7226 | RELOC_SECTION (htab, ".plt")); | |
229fcec5 MM |
7227 | if (s != NULL) |
7228 | dyn.d_un.d_val -= s->size; | |
7229 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
7230 | break; | |
7231 | } | |
7232 | /* Fall through */ | |
7233 | ||
7234 | case DT_REL: | |
7235 | case DT_RELA: | |
229fcec5 MM |
7236 | /* In the BPABI, the DT_REL tag must point at the file |
7237 | offset, not the VMA, of the first relocation | |
7238 | section. So, we use code similar to that in | |
7239 | elflink.c, but do not check for SHF_ALLOC on the | |
7240 | relcoation section, since relocations sections are | |
7241 | never allocated under the BPABI. The comments above | |
7242 | about Unixware notwithstanding, we include all of the | |
7243 | relocations here. */ | |
7244 | if (htab->symbian_p) | |
7245 | { | |
7246 | unsigned int i; | |
7247 | type = ((dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ) | |
7248 | ? SHT_REL : SHT_RELA); | |
7249 | dyn.d_un.d_val = 0; | |
7250 | for (i = 1; i < elf_numsections (output_bfd); i++) | |
7251 | { | |
7252 | Elf_Internal_Shdr *hdr | |
7253 | = elf_elfsections (output_bfd)[i]; | |
7254 | if (hdr->sh_type == type) | |
7255 | { | |
7256 | if (dyn.d_tag == DT_RELSZ | |
7257 | || dyn.d_tag == DT_RELASZ) | |
7258 | dyn.d_un.d_val += hdr->sh_size; | |
de52dba4 AM |
7259 | else if ((ufile_ptr) hdr->sh_offset |
7260 | <= dyn.d_un.d_val - 1) | |
229fcec5 MM |
7261 | dyn.d_un.d_val = hdr->sh_offset; |
7262 | } | |
7263 | } | |
7264 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
7265 | } | |
252b5132 | 7266 | break; |
88f7bcd5 NC |
7267 | |
7268 | /* Set the bottom bit of DT_INIT/FINI if the | |
7269 | corresponding function is Thumb. */ | |
7270 | case DT_INIT: | |
7271 | name = info->init_function; | |
7272 | goto get_sym; | |
7273 | case DT_FINI: | |
7274 | name = info->fini_function; | |
7275 | get_sym: | |
7276 | /* If it wasn't set by elf_bfd_final_link | |
4cc11e76 | 7277 | then there is nothing to adjust. */ |
88f7bcd5 NC |
7278 | if (dyn.d_un.d_val != 0) |
7279 | { | |
7280 | struct elf_link_hash_entry * eh; | |
7281 | ||
7282 | eh = elf_link_hash_lookup (elf_hash_table (info), name, | |
b34976b6 | 7283 | FALSE, FALSE, TRUE); |
88f7bcd5 NC |
7284 | if (eh != (struct elf_link_hash_entry *) NULL |
7285 | && ELF_ST_TYPE (eh->type) == STT_ARM_TFUNC) | |
7286 | { | |
7287 | dyn.d_un.d_val |= 1; | |
b34976b6 | 7288 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
88f7bcd5 NC |
7289 | } |
7290 | } | |
7291 | break; | |
252b5132 RH |
7292 | } |
7293 | } | |
7294 | ||
24a1ba0f | 7295 | /* Fill in the first entry in the procedure linkage table. */ |
e5a52504 | 7296 | if (splt->size > 0 && elf32_arm_hash_table (info)->plt_header_size) |
f7a74f8c | 7297 | { |
00a97672 RS |
7298 | const bfd_vma *plt0_entry; |
7299 | bfd_vma got_address, plt_address, got_displacement; | |
7300 | ||
7301 | /* Calculate the addresses of the GOT and PLT. */ | |
7302 | got_address = sgot->output_section->vma + sgot->output_offset; | |
7303 | plt_address = splt->output_section->vma + splt->output_offset; | |
7304 | ||
7305 | if (htab->vxworks_p) | |
7306 | { | |
7307 | /* The VxWorks GOT is relocated by the dynamic linker. | |
7308 | Therefore, we must emit relocations rather than simply | |
7309 | computing the values now. */ | |
7310 | Elf_Internal_Rela rel; | |
7311 | ||
7312 | plt0_entry = elf32_arm_vxworks_exec_plt0_entry; | |
7313 | bfd_put_32 (output_bfd, plt0_entry[0], splt->contents + 0); | |
7314 | bfd_put_32 (output_bfd, plt0_entry[1], splt->contents + 4); | |
7315 | bfd_put_32 (output_bfd, plt0_entry[2], splt->contents + 8); | |
7316 | bfd_put_32 (output_bfd, got_address, splt->contents + 12); | |
7317 | ||
7318 | /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */ | |
7319 | rel.r_offset = plt_address + 12; | |
7320 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); | |
7321 | rel.r_addend = 0; | |
7322 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, | |
7323 | htab->srelplt2->contents); | |
7324 | } | |
7325 | else | |
7326 | { | |
7327 | got_displacement = got_address - (plt_address + 16); | |
7328 | ||
7329 | plt0_entry = elf32_arm_plt0_entry; | |
7330 | bfd_put_32 (output_bfd, plt0_entry[0], splt->contents + 0); | |
7331 | bfd_put_32 (output_bfd, plt0_entry[1], splt->contents + 4); | |
7332 | bfd_put_32 (output_bfd, plt0_entry[2], splt->contents + 8); | |
7333 | bfd_put_32 (output_bfd, plt0_entry[3], splt->contents + 12); | |
5e681ec4 | 7334 | |
5e681ec4 | 7335 | #ifdef FOUR_WORD_PLT |
00a97672 RS |
7336 | /* The displacement value goes in the otherwise-unused |
7337 | last word of the second entry. */ | |
7338 | bfd_put_32 (output_bfd, got_displacement, splt->contents + 28); | |
5e681ec4 | 7339 | #else |
00a97672 | 7340 | bfd_put_32 (output_bfd, got_displacement, splt->contents + 16); |
5e681ec4 | 7341 | #endif |
00a97672 | 7342 | } |
f7a74f8c | 7343 | } |
252b5132 RH |
7344 | |
7345 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
7346 | really seem like the right value. */ | |
7347 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; | |
00a97672 RS |
7348 | |
7349 | if (htab->vxworks_p && !info->shared && htab->splt->size > 0) | |
7350 | { | |
7351 | /* Correct the .rel(a).plt.unloaded relocations. They will have | |
7352 | incorrect symbol indexes. */ | |
7353 | int num_plts; | |
eed62c48 | 7354 | unsigned char *p; |
00a97672 RS |
7355 | |
7356 | num_plts = ((htab->splt->size - htab->plt_header_size) | |
7357 | / htab->plt_entry_size); | |
7358 | p = htab->srelplt2->contents + RELOC_SIZE (htab); | |
7359 | ||
7360 | for (; num_plts; num_plts--) | |
7361 | { | |
7362 | Elf_Internal_Rela rel; | |
7363 | ||
7364 | SWAP_RELOC_IN (htab) (output_bfd, p, &rel); | |
7365 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); | |
7366 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, p); | |
7367 | p += RELOC_SIZE (htab); | |
7368 | ||
7369 | SWAP_RELOC_IN (htab) (output_bfd, p, &rel); | |
7370 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32); | |
7371 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, p); | |
7372 | p += RELOC_SIZE (htab); | |
7373 | } | |
7374 | } | |
252b5132 RH |
7375 | } |
7376 | ||
7377 | /* Fill in the first three entries in the global offset table. */ | |
229fcec5 | 7378 | if (sgot) |
252b5132 | 7379 | { |
229fcec5 MM |
7380 | if (sgot->size > 0) |
7381 | { | |
7382 | if (sdyn == NULL) | |
7383 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
7384 | else | |
7385 | bfd_put_32 (output_bfd, | |
7386 | sdyn->output_section->vma + sdyn->output_offset, | |
7387 | sgot->contents); | |
7388 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
7389 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
7390 | } | |
252b5132 | 7391 | |
229fcec5 MM |
7392 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; |
7393 | } | |
252b5132 | 7394 | |
b34976b6 | 7395 | return TRUE; |
252b5132 RH |
7396 | } |
7397 | ||
ba96a88f | 7398 | static void |
57e8b36a | 7399 | elf32_arm_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED) |
ba96a88f | 7400 | { |
9b485d32 | 7401 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ |
e489d0ae | 7402 | struct elf32_arm_link_hash_table *globals; |
ba96a88f NC |
7403 | |
7404 | i_ehdrp = elf_elfheader (abfd); | |
7405 | ||
94a3258f PB |
7406 | if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_UNKNOWN) |
7407 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_ARM; | |
7408 | else | |
7409 | i_ehdrp->e_ident[EI_OSABI] = 0; | |
ba96a88f | 7410 | i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION; |
e489d0ae | 7411 | |
93204d3a PB |
7412 | if (link_info) |
7413 | { | |
7414 | globals = elf32_arm_hash_table (link_info); | |
7415 | if (globals->byteswap_code) | |
7416 | i_ehdrp->e_flags |= EF_ARM_BE8; | |
7417 | } | |
ba96a88f NC |
7418 | } |
7419 | ||
99e4ae17 | 7420 | static enum elf_reloc_type_class |
57e8b36a | 7421 | elf32_arm_reloc_type_class (const Elf_Internal_Rela *rela) |
99e4ae17 | 7422 | { |
f51e552e | 7423 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
99e4ae17 AJ |
7424 | { |
7425 | case R_ARM_RELATIVE: | |
7426 | return reloc_class_relative; | |
7427 | case R_ARM_JUMP_SLOT: | |
7428 | return reloc_class_plt; | |
7429 | case R_ARM_COPY: | |
7430 | return reloc_class_copy; | |
7431 | default: | |
7432 | return reloc_class_normal; | |
7433 | } | |
7434 | } | |
7435 | ||
e16bb312 NC |
7436 | /* Set the right machine number for an Arm ELF file. */ |
7437 | ||
7438 | static bfd_boolean | |
57e8b36a | 7439 | elf32_arm_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr) |
e16bb312 NC |
7440 | { |
7441 | if (hdr->sh_type == SHT_NOTE) | |
7442 | *flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
7443 | ||
7444 | return TRUE; | |
7445 | } | |
7446 | ||
e489d0ae | 7447 | static void |
57e8b36a | 7448 | elf32_arm_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) |
e16bb312 | 7449 | { |
5a6c6817 | 7450 | bfd_arm_update_notes (abfd, ARM_NOTE_SECTION); |
e16bb312 NC |
7451 | } |
7452 | ||
40a18ebd NC |
7453 | /* Return TRUE if this is an unwinding table entry. */ |
7454 | ||
7455 | static bfd_boolean | |
7456 | is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name) | |
7457 | { | |
7458 | size_t len1, len2; | |
7459 | ||
7460 | len1 = sizeof (ELF_STRING_ARM_unwind) - 1; | |
7461 | len2 = sizeof (ELF_STRING_ARM_unwind_once) - 1; | |
7462 | return (strncmp (name, ELF_STRING_ARM_unwind, len1) == 0 | |
7463 | || strncmp (name, ELF_STRING_ARM_unwind_once, len2) == 0); | |
7464 | } | |
7465 | ||
7466 | ||
7467 | /* Set the type and flags for an ARM section. We do this by | |
7468 | the section name, which is a hack, but ought to work. */ | |
7469 | ||
7470 | static bfd_boolean | |
7471 | elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec) | |
7472 | { | |
7473 | const char * name; | |
7474 | ||
7475 | name = bfd_get_section_name (abfd, sec); | |
7476 | ||
7477 | if (is_arm_elf_unwind_section_name (abfd, name)) | |
7478 | { | |
7479 | hdr->sh_type = SHT_ARM_EXIDX; | |
7480 | hdr->sh_flags |= SHF_LINK_ORDER; | |
7481 | } | |
ee065d83 PB |
7482 | else if (strcmp(name, ".ARM.attributes") == 0) |
7483 | { | |
7484 | hdr->sh_type = SHT_ARM_ATTRIBUTES; | |
7485 | } | |
40a18ebd NC |
7486 | return TRUE; |
7487 | } | |
7488 | ||
ee065d83 PB |
7489 | /* Parse an Arm EABI attributes section. */ |
7490 | static void | |
7491 | elf32_arm_parse_attributes (bfd *abfd, Elf_Internal_Shdr * hdr) | |
7492 | { | |
7493 | bfd_byte *contents; | |
7494 | bfd_byte *p; | |
7495 | bfd_vma len; | |
7496 | ||
7497 | contents = bfd_malloc (hdr->sh_size); | |
7498 | if (!contents) | |
7499 | return; | |
7500 | if (!bfd_get_section_contents (abfd, hdr->bfd_section, contents, 0, | |
7501 | hdr->sh_size)) | |
7502 | { | |
7503 | free (contents); | |
7504 | return; | |
7505 | } | |
7506 | p = contents; | |
7507 | if (*(p++) == 'A') | |
7508 | { | |
7509 | len = hdr->sh_size - 1; | |
7510 | while (len > 0) | |
7511 | { | |
7512 | int namelen; | |
7513 | bfd_vma section_len; | |
7514 | ||
7515 | section_len = bfd_get_32 (abfd, p); | |
7516 | p += 4; | |
7517 | if (section_len > len) | |
7518 | section_len = len; | |
7519 | len -= section_len; | |
7520 | namelen = strlen ((char *)p) + 1; | |
7521 | section_len -= namelen + 4; | |
7522 | if (strcmp((char *)p, "aeabi") != 0) | |
7523 | { | |
7524 | /* Vendor section. Ignore it. */ | |
7525 | p += namelen + section_len; | |
7526 | } | |
7527 | else | |
7528 | { | |
7529 | p += namelen; | |
7530 | while (section_len > 0) | |
7531 | { | |
7532 | int tag; | |
7533 | unsigned int n; | |
7534 | unsigned int val; | |
7535 | bfd_vma subsection_len; | |
7536 | bfd_byte *end; | |
7537 | ||
7538 | tag = read_unsigned_leb128 (abfd, p, &n); | |
7539 | p += n; | |
7540 | subsection_len = bfd_get_32 (abfd, p); | |
7541 | p += 4; | |
7542 | if (subsection_len > section_len) | |
7543 | subsection_len = section_len; | |
7544 | section_len -= subsection_len; | |
7545 | subsection_len -= n + 4; | |
7546 | end = p + subsection_len; | |
7547 | switch (tag) | |
7548 | { | |
7549 | case Tag_File: | |
7550 | while (p < end) | |
7551 | { | |
7552 | bfd_boolean is_string; | |
7553 | ||
7554 | tag = read_unsigned_leb128 (abfd, p, &n); | |
7555 | p += n; | |
7556 | if (tag == 4 || tag == 5) | |
7557 | is_string = 1; | |
7558 | else if (tag < 32) | |
7559 | is_string = 0; | |
7560 | else | |
7561 | is_string = (tag & 1) != 0; | |
7562 | if (tag == Tag_compatibility) | |
7563 | { | |
7564 | val = read_unsigned_leb128 (abfd, p, &n); | |
7565 | p += n; | |
7566 | elf32_arm_add_eabi_attr_compat (abfd, val, | |
7567 | (char *)p); | |
7568 | p += strlen ((char *)p) + 1; | |
7569 | } | |
7570 | else if (is_string) | |
7571 | { | |
7572 | elf32_arm_add_eabi_attr_string (abfd, tag, | |
7573 | (char *)p); | |
7574 | p += strlen ((char *)p) + 1; | |
7575 | } | |
7576 | else | |
7577 | { | |
7578 | val = read_unsigned_leb128 (abfd, p, &n); | |
7579 | p += n; | |
7580 | elf32_arm_add_eabi_attr_int (abfd, tag, val); | |
7581 | } | |
7582 | } | |
7583 | break; | |
7584 | case Tag_Section: | |
7585 | case Tag_Symbol: | |
7586 | /* Don't have anywhere convenient to attach these. | |
7587 | Fall through for now. */ | |
7588 | default: | |
7589 | /* Ignore things we don't kow about. */ | |
7590 | p += subsection_len; | |
7591 | subsection_len = 0; | |
7592 | break; | |
7593 | } | |
7594 | } | |
7595 | } | |
7596 | } | |
7597 | } | |
7598 | free (contents); | |
7599 | } | |
7600 | ||
6dc132d9 L |
7601 | /* Handle an ARM specific section when reading an object file. This is |
7602 | called when bfd_section_from_shdr finds a section with an unknown | |
7603 | type. */ | |
40a18ebd NC |
7604 | |
7605 | static bfd_boolean | |
7606 | elf32_arm_section_from_shdr (bfd *abfd, | |
7607 | Elf_Internal_Shdr * hdr, | |
6dc132d9 L |
7608 | const char *name, |
7609 | int shindex) | |
40a18ebd NC |
7610 | { |
7611 | /* There ought to be a place to keep ELF backend specific flags, but | |
7612 | at the moment there isn't one. We just keep track of the | |
7613 | sections by their name, instead. Fortunately, the ABI gives | |
7614 | names for all the ARM specific sections, so we will probably get | |
7615 | away with this. */ | |
7616 | switch (hdr->sh_type) | |
7617 | { | |
7618 | case SHT_ARM_EXIDX: | |
0951f019 RE |
7619 | case SHT_ARM_PREEMPTMAP: |
7620 | case SHT_ARM_ATTRIBUTES: | |
40a18ebd NC |
7621 | break; |
7622 | ||
7623 | default: | |
7624 | return FALSE; | |
7625 | } | |
7626 | ||
6dc132d9 | 7627 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
40a18ebd NC |
7628 | return FALSE; |
7629 | ||
ee065d83 PB |
7630 | if (hdr->sh_type == SHT_ARM_ATTRIBUTES) |
7631 | elf32_arm_parse_attributes(abfd, hdr); | |
40a18ebd NC |
7632 | return TRUE; |
7633 | } | |
e489d0ae | 7634 | |
8e3de13a NC |
7635 | /* A structure used to record a list of sections, independently |
7636 | of the next and prev fields in the asection structure. */ | |
7637 | typedef struct section_list | |
7638 | { | |
7639 | asection * sec; | |
7640 | struct section_list * next; | |
7641 | struct section_list * prev; | |
7642 | } | |
7643 | section_list; | |
7644 | ||
7645 | /* Unfortunately we need to keep a list of sections for which | |
7646 | an _arm_elf_section_data structure has been allocated. This | |
7647 | is because it is possible for functions like elf32_arm_write_section | |
7648 | to be called on a section which has had an elf_data_structure | |
7649 | allocated for it (and so the used_by_bfd field is valid) but | |
7650 | for which the ARM extended version of this structure - the | |
7651 | _arm_elf_section_data structure - has not been allocated. */ | |
7652 | static section_list * sections_with_arm_elf_section_data = NULL; | |
7653 | ||
7654 | static void | |
957c6e41 | 7655 | record_section_with_arm_elf_section_data (asection * sec) |
8e3de13a NC |
7656 | { |
7657 | struct section_list * entry; | |
7658 | ||
957c6e41 | 7659 | entry = bfd_malloc (sizeof (* entry)); |
8e3de13a NC |
7660 | if (entry == NULL) |
7661 | return; | |
7662 | entry->sec = sec; | |
7663 | entry->next = sections_with_arm_elf_section_data; | |
7664 | entry->prev = NULL; | |
7665 | if (entry->next != NULL) | |
7666 | entry->next->prev = entry; | |
7667 | sections_with_arm_elf_section_data = entry; | |
7668 | } | |
7669 | ||
44444f50 NC |
7670 | static struct section_list * |
7671 | find_arm_elf_section_entry (asection * sec) | |
8e3de13a NC |
7672 | { |
7673 | struct section_list * entry; | |
bd4aae00 | 7674 | static struct section_list * last_entry = NULL; |
8e3de13a | 7675 | |
bd4aae00 NC |
7676 | /* This is a short cut for the typical case where the sections are added |
7677 | to the sections_with_arm_elf_section_data list in forward order and | |
7678 | then looked up here in backwards order. This makes a real difference | |
7679 | to the ld-srec/sec64k.exp linker test. */ | |
44444f50 | 7680 | entry = sections_with_arm_elf_section_data; |
bd4aae00 NC |
7681 | if (last_entry != NULL) |
7682 | { | |
7683 | if (last_entry->sec == sec) | |
44444f50 NC |
7684 | entry = last_entry; |
7685 | else if (last_entry->next != NULL | |
7686 | && last_entry->next->sec == sec) | |
7687 | entry = last_entry->next; | |
bd4aae00 | 7688 | } |
44444f50 NC |
7689 | |
7690 | for (; entry; entry = entry->next) | |
8e3de13a | 7691 | if (entry->sec == sec) |
44444f50 | 7692 | break; |
bd4aae00 | 7693 | |
44444f50 NC |
7694 | if (entry) |
7695 | /* Record the entry prior to this one - it is the entry we are most | |
7696 | likely to want to locate next time. Also this way if we have been | |
7697 | called from unrecord_section_with_arm_elf_section_data() we will not | |
7698 | be caching a pointer that is about to be freed. */ | |
7699 | last_entry = entry->prev; | |
7700 | ||
7701 | return entry; | |
7702 | } | |
7703 | ||
7704 | static _arm_elf_section_data * | |
7705 | get_arm_elf_section_data (asection * sec) | |
7706 | { | |
7707 | struct section_list * entry; | |
7708 | ||
7709 | entry = find_arm_elf_section_entry (sec); | |
7710 | ||
7711 | if (entry) | |
7712 | return elf32_arm_section_data (entry->sec); | |
7713 | else | |
7714 | return NULL; | |
8e3de13a NC |
7715 | } |
7716 | ||
7717 | static void | |
7718 | unrecord_section_with_arm_elf_section_data (asection * sec) | |
7719 | { | |
7720 | struct section_list * entry; | |
7721 | ||
44444f50 NC |
7722 | entry = find_arm_elf_section_entry (sec); |
7723 | ||
7724 | if (entry) | |
7725 | { | |
7726 | if (entry->prev != NULL) | |
7727 | entry->prev->next = entry->next; | |
7728 | if (entry->next != NULL) | |
7729 | entry->next->prev = entry->prev; | |
7730 | if (entry == sections_with_arm_elf_section_data) | |
7731 | sections_with_arm_elf_section_data = entry->next; | |
7732 | free (entry); | |
7733 | } | |
8e3de13a NC |
7734 | } |
7735 | ||
e489d0ae PB |
7736 | /* Called for each symbol. Builds a section map based on mapping symbols. |
7737 | Does not alter any of the symbols. */ | |
7738 | ||
7739 | static bfd_boolean | |
7740 | elf32_arm_output_symbol_hook (struct bfd_link_info *info, | |
7741 | const char *name, | |
7742 | Elf_Internal_Sym *elfsym, | |
7743 | asection *input_sec, | |
00a97672 | 7744 | struct elf_link_hash_entry *h) |
e489d0ae PB |
7745 | { |
7746 | int mapcount; | |
7747 | elf32_arm_section_map *map; | |
8e3de13a NC |
7748 | elf32_arm_section_map *newmap; |
7749 | _arm_elf_section_data *arm_data; | |
e489d0ae PB |
7750 | struct elf32_arm_link_hash_table *globals; |
7751 | ||
00a97672 RS |
7752 | globals = elf32_arm_hash_table (info); |
7753 | if (globals->vxworks_p | |
7754 | && !elf_vxworks_link_output_symbol_hook (info, name, elfsym, | |
7755 | input_sec, h)) | |
7756 | return FALSE; | |
7757 | ||
e489d0ae PB |
7758 | /* Only do this on final link. */ |
7759 | if (info->relocatable) | |
7760 | return TRUE; | |
7761 | ||
7762 | /* Only build a map if we need to byteswap code. */ | |
e489d0ae PB |
7763 | if (!globals->byteswap_code) |
7764 | return TRUE; | |
7765 | ||
7766 | /* We only want mapping symbols. */ | |
05ea83ed | 7767 | if (! bfd_is_arm_mapping_symbol_name (name)) |
e489d0ae PB |
7768 | return TRUE; |
7769 | ||
8e3de13a NC |
7770 | /* If this section has not been allocated an _arm_elf_section_data |
7771 | structure then we cannot record anything. */ | |
7772 | arm_data = get_arm_elf_section_data (input_sec); | |
7773 | if (arm_data == NULL) | |
7774 | return TRUE; | |
7775 | ||
7776 | mapcount = arm_data->mapcount + 1; | |
7777 | map = arm_data->map; | |
d7f735da | 7778 | |
e489d0ae PB |
7779 | /* TODO: This may be inefficient, but we probably don't usually have many |
7780 | mapping symbols per section. */ | |
8e3de13a NC |
7781 | newmap = bfd_realloc (map, mapcount * sizeof (* map)); |
7782 | if (newmap != NULL) | |
7783 | { | |
7784 | arm_data->map = newmap; | |
7785 | arm_data->mapcount = mapcount; | |
7786 | ||
d7f735da NC |
7787 | newmap[mapcount - 1].vma = elfsym->st_value; |
7788 | newmap[mapcount - 1].type = name[1]; | |
8e3de13a | 7789 | } |
57e8b36a | 7790 | |
e489d0ae PB |
7791 | return TRUE; |
7792 | } | |
7793 | ||
e489d0ae PB |
7794 | /* Allocate target specific section data. */ |
7795 | ||
7796 | static bfd_boolean | |
7797 | elf32_arm_new_section_hook (bfd *abfd, asection *sec) | |
7798 | { | |
8e3de13a | 7799 | _arm_elf_section_data *sdata; |
e489d0ae PB |
7800 | bfd_size_type amt = sizeof (*sdata); |
7801 | ||
7802 | sdata = bfd_zalloc (abfd, amt); | |
7803 | if (sdata == NULL) | |
7804 | return FALSE; | |
7805 | sec->used_by_bfd = sdata; | |
7806 | ||
957c6e41 | 7807 | record_section_with_arm_elf_section_data (sec); |
8e3de13a | 7808 | |
e489d0ae PB |
7809 | return _bfd_elf_new_section_hook (abfd, sec); |
7810 | } | |
7811 | ||
7812 | ||
7813 | /* Used to order a list of mapping symbols by address. */ | |
7814 | ||
7815 | static int | |
7816 | elf32_arm_compare_mapping (const void * a, const void * b) | |
7817 | { | |
7818 | return ((const elf32_arm_section_map *) a)->vma | |
7819 | > ((const elf32_arm_section_map *) b)->vma; | |
7820 | } | |
7821 | ||
7822 | ||
7823 | /* Do code byteswapping. Return FALSE afterwards so that the section is | |
7824 | written out as normal. */ | |
7825 | ||
7826 | static bfd_boolean | |
7827 | elf32_arm_write_section (bfd *output_bfd ATTRIBUTE_UNUSED, asection *sec, | |
7828 | bfd_byte *contents) | |
7829 | { | |
7830 | int mapcount; | |
8e3de13a | 7831 | _arm_elf_section_data *arm_data; |
e489d0ae PB |
7832 | elf32_arm_section_map *map; |
7833 | bfd_vma ptr; | |
7834 | bfd_vma end; | |
7835 | bfd_vma offset; | |
7836 | bfd_byte tmp; | |
7837 | int i; | |
57e8b36a | 7838 | |
8e3de13a NC |
7839 | /* If this section has not been allocated an _arm_elf_section_data |
7840 | structure then we cannot record anything. */ | |
7841 | arm_data = get_arm_elf_section_data (sec); | |
7842 | if (arm_data == NULL) | |
7843 | return FALSE; | |
7844 | ||
7845 | mapcount = arm_data->mapcount; | |
7846 | map = arm_data->map; | |
e489d0ae PB |
7847 | |
7848 | if (mapcount == 0) | |
7849 | return FALSE; | |
7850 | ||
8e3de13a | 7851 | qsort (map, mapcount, sizeof (* map), elf32_arm_compare_mapping); |
e489d0ae PB |
7852 | |
7853 | offset = sec->output_section->vma + sec->output_offset; | |
7854 | ptr = map[0].vma - offset; | |
7855 | for (i = 0; i < mapcount; i++) | |
7856 | { | |
7857 | if (i == mapcount - 1) | |
eea6121a | 7858 | end = sec->size; |
e489d0ae PB |
7859 | else |
7860 | end = map[i + 1].vma - offset; | |
57e8b36a | 7861 | |
e489d0ae PB |
7862 | switch (map[i].type) |
7863 | { | |
7864 | case 'a': | |
7865 | /* Byte swap code words. */ | |
7866 | while (ptr + 3 < end) | |
7867 | { | |
7868 | tmp = contents[ptr]; | |
7869 | contents[ptr] = contents[ptr + 3]; | |
7870 | contents[ptr + 3] = tmp; | |
7871 | tmp = contents[ptr + 1]; | |
7872 | contents[ptr + 1] = contents[ptr + 2]; | |
7873 | contents[ptr + 2] = tmp; | |
7874 | ptr += 4; | |
7875 | } | |
7876 | break; | |
7877 | ||
7878 | case 't': | |
7879 | /* Byte swap code halfwords. */ | |
7880 | while (ptr + 1 < end) | |
7881 | { | |
7882 | tmp = contents[ptr]; | |
7883 | contents[ptr] = contents[ptr + 1]; | |
7884 | contents[ptr + 1] = tmp; | |
7885 | ptr += 2; | |
7886 | } | |
7887 | break; | |
7888 | ||
7889 | case 'd': | |
7890 | /* Leave data alone. */ | |
7891 | break; | |
7892 | } | |
7893 | ptr = end; | |
7894 | } | |
8e3de13a | 7895 | |
93204d3a | 7896 | free (map); |
8e3de13a NC |
7897 | arm_data->mapcount = 0; |
7898 | arm_data->map = NULL; | |
7899 | unrecord_section_with_arm_elf_section_data (sec); | |
7900 | ||
e489d0ae PB |
7901 | return FALSE; |
7902 | } | |
7903 | ||
957c6e41 NC |
7904 | static void |
7905 | unrecord_section_via_map_over_sections (bfd * abfd ATTRIBUTE_UNUSED, | |
7906 | asection * sec, | |
7907 | void * ignore ATTRIBUTE_UNUSED) | |
7908 | { | |
7909 | unrecord_section_with_arm_elf_section_data (sec); | |
7910 | } | |
7911 | ||
7912 | static bfd_boolean | |
7913 | elf32_arm_close_and_cleanup (bfd * abfd) | |
7914 | { | |
7915 | bfd_map_over_sections (abfd, unrecord_section_via_map_over_sections, NULL); | |
7916 | ||
7917 | return _bfd_elf_close_and_cleanup (abfd); | |
7918 | } | |
7919 | ||
b7693d02 DJ |
7920 | /* Display STT_ARM_TFUNC symbols as functions. */ |
7921 | ||
7922 | static void | |
7923 | elf32_arm_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, | |
7924 | asymbol *asym) | |
7925 | { | |
7926 | elf_symbol_type *elfsym = (elf_symbol_type *) asym; | |
7927 | ||
7928 | if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_ARM_TFUNC) | |
7929 | elfsym->symbol.flags |= BSF_FUNCTION; | |
7930 | } | |
7931 | ||
0beaef2b PB |
7932 | |
7933 | /* Mangle thumb function symbols as we read them in. */ | |
7934 | ||
7935 | static void | |
7936 | elf32_arm_swap_symbol_in (bfd * abfd, | |
7937 | const void *psrc, | |
7938 | const void *pshn, | |
7939 | Elf_Internal_Sym *dst) | |
7940 | { | |
7941 | bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst); | |
7942 | ||
7943 | /* New EABI objects mark thumb function symbols by setting the low bit of | |
7944 | the address. Turn these into STT_ARM_TFUNC. */ | |
7945 | if (ELF_ST_TYPE (dst->st_info) == STT_FUNC | |
7946 | && (dst->st_value & 1)) | |
7947 | { | |
7948 | dst->st_info = ELF_ST_INFO (ELF_ST_BIND (dst->st_info), STT_ARM_TFUNC); | |
7949 | dst->st_value &= ~(bfd_vma) 1; | |
7950 | } | |
7951 | } | |
7952 | ||
7953 | ||
7954 | /* Mangle thumb function symbols as we write them out. */ | |
7955 | ||
7956 | static void | |
7957 | elf32_arm_swap_symbol_out (bfd *abfd, | |
7958 | const Elf_Internal_Sym *src, | |
7959 | void *cdst, | |
7960 | void *shndx) | |
7961 | { | |
7962 | Elf_Internal_Sym newsym; | |
7963 | ||
7964 | /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit | |
7965 | of the address set, as per the new EABI. We do this unconditionally | |
7966 | because objcopy does not set the elf header flags until after | |
7967 | it writes out the symbol table. */ | |
7968 | if (ELF_ST_TYPE (src->st_info) == STT_ARM_TFUNC) | |
7969 | { | |
7970 | newsym = *src; | |
7971 | newsym.st_info = ELF_ST_INFO (ELF_ST_BIND (src->st_info), STT_FUNC); | |
7972 | newsym.st_value |= 1; | |
7973 | ||
7974 | src = &newsym; | |
7975 | } | |
7976 | bfd_elf32_swap_symbol_out (abfd, src, cdst, shndx); | |
7977 | } | |
7978 | ||
b294bdf8 MM |
7979 | /* Add the PT_ARM_EXIDX program header. */ |
7980 | ||
7981 | static bfd_boolean | |
7982 | elf32_arm_modify_segment_map (bfd *abfd, | |
7983 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
7984 | { | |
7985 | struct elf_segment_map *m; | |
7986 | asection *sec; | |
7987 | ||
7988 | sec = bfd_get_section_by_name (abfd, ".ARM.exidx"); | |
7989 | if (sec != NULL && (sec->flags & SEC_LOAD) != 0) | |
7990 | { | |
7991 | /* If there is already a PT_ARM_EXIDX header, then we do not | |
7992 | want to add another one. This situation arises when running | |
7993 | "strip"; the input binary already has the header. */ | |
7994 | m = elf_tdata (abfd)->segment_map; | |
7995 | while (m && m->p_type != PT_ARM_EXIDX) | |
7996 | m = m->next; | |
7997 | if (!m) | |
7998 | { | |
7999 | m = bfd_zalloc (abfd, sizeof (struct elf_segment_map)); | |
8000 | if (m == NULL) | |
8001 | return FALSE; | |
8002 | m->p_type = PT_ARM_EXIDX; | |
8003 | m->count = 1; | |
8004 | m->sections[0] = sec; | |
8005 | ||
8006 | m->next = elf_tdata (abfd)->segment_map; | |
8007 | elf_tdata (abfd)->segment_map = m; | |
8008 | } | |
8009 | } | |
8010 | ||
8011 | return TRUE; | |
8012 | } | |
8013 | ||
8014 | /* We may add a PT_ARM_EXIDX program header. */ | |
8015 | ||
8016 | static int | |
8017 | elf32_arm_additional_program_headers (bfd *abfd) | |
8018 | { | |
8019 | asection *sec; | |
8020 | ||
8021 | sec = bfd_get_section_by_name (abfd, ".ARM.exidx"); | |
8022 | if (sec != NULL && (sec->flags & SEC_LOAD) != 0) | |
8023 | return 1; | |
8024 | else | |
8025 | return 0; | |
8026 | } | |
8027 | ||
0beaef2b PB |
8028 | /* We use this to override swap_symbol_in and swap_symbol_out. */ |
8029 | const struct elf_size_info elf32_arm_size_info = { | |
8030 | sizeof (Elf32_External_Ehdr), | |
8031 | sizeof (Elf32_External_Phdr), | |
8032 | sizeof (Elf32_External_Shdr), | |
8033 | sizeof (Elf32_External_Rel), | |
8034 | sizeof (Elf32_External_Rela), | |
8035 | sizeof (Elf32_External_Sym), | |
8036 | sizeof (Elf32_External_Dyn), | |
8037 | sizeof (Elf_External_Note), | |
8038 | 4, | |
8039 | 1, | |
8040 | 32, 2, | |
8041 | ELFCLASS32, EV_CURRENT, | |
8042 | bfd_elf32_write_out_phdrs, | |
8043 | bfd_elf32_write_shdrs_and_ehdr, | |
8044 | bfd_elf32_write_relocs, | |
8045 | elf32_arm_swap_symbol_in, | |
8046 | elf32_arm_swap_symbol_out, | |
8047 | bfd_elf32_slurp_reloc_table, | |
8048 | bfd_elf32_slurp_symbol_table, | |
8049 | bfd_elf32_swap_dyn_in, | |
8050 | bfd_elf32_swap_dyn_out, | |
8051 | bfd_elf32_swap_reloc_in, | |
8052 | bfd_elf32_swap_reloc_out, | |
8053 | bfd_elf32_swap_reloca_in, | |
8054 | bfd_elf32_swap_reloca_out | |
8055 | }; | |
8056 | ||
252b5132 RH |
8057 | #define ELF_ARCH bfd_arch_arm |
8058 | #define ELF_MACHINE_CODE EM_ARM | |
d0facd1b NC |
8059 | #ifdef __QNXTARGET__ |
8060 | #define ELF_MAXPAGESIZE 0x1000 | |
8061 | #else | |
f21f3fe0 | 8062 | #define ELF_MAXPAGESIZE 0x8000 |
d0facd1b | 8063 | #endif |
b1342370 | 8064 | #define ELF_MINPAGESIZE 0x1000 |
252b5132 | 8065 | |
ba93b8ac DJ |
8066 | #define bfd_elf32_mkobject elf32_arm_mkobject |
8067 | ||
99e4ae17 AJ |
8068 | #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data |
8069 | #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data | |
252b5132 RH |
8070 | #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags |
8071 | #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data | |
8072 | #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create | |
dc810e39 | 8073 | #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup |
252b5132 | 8074 | #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line |
4ab527b0 | 8075 | #define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info |
e489d0ae | 8076 | #define bfd_elf32_new_section_hook elf32_arm_new_section_hook |
3c9458e9 | 8077 | #define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol |
957c6e41 | 8078 | #define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup |
ee065d83 | 8079 | #define bfd_elf32_bfd_final_link elf32_arm_bfd_final_link |
252b5132 RH |
8080 | |
8081 | #define elf_backend_get_symbol_type elf32_arm_get_symbol_type | |
8082 | #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook | |
8083 | #define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook | |
8084 | #define elf_backend_check_relocs elf32_arm_check_relocs | |
dc810e39 | 8085 | #define elf_backend_relocate_section elf32_arm_relocate_section |
e489d0ae | 8086 | #define elf_backend_write_section elf32_arm_write_section |
252b5132 | 8087 | #define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol |
5e681ec4 | 8088 | #define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections |
252b5132 RH |
8089 | #define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol |
8090 | #define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections | |
e489d0ae | 8091 | #define elf_backend_link_output_symbol_hook elf32_arm_output_symbol_hook |
252b5132 | 8092 | #define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections |
ba96a88f | 8093 | #define elf_backend_post_process_headers elf32_arm_post_process_headers |
99e4ae17 | 8094 | #define elf_backend_reloc_type_class elf32_arm_reloc_type_class |
c178919b | 8095 | #define elf_backend_object_p elf32_arm_object_p |
e16bb312 | 8096 | #define elf_backend_section_flags elf32_arm_section_flags |
40a18ebd NC |
8097 | #define elf_backend_fake_sections elf32_arm_fake_sections |
8098 | #define elf_backend_section_from_shdr elf32_arm_section_from_shdr | |
e16bb312 | 8099 | #define elf_backend_final_write_processing elf32_arm_final_write_processing |
5e681ec4 | 8100 | #define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol |
b7693d02 | 8101 | #define elf_backend_symbol_processing elf32_arm_symbol_processing |
0beaef2b | 8102 | #define elf_backend_size_info elf32_arm_size_info |
b294bdf8 MM |
8103 | #define elf_backend_modify_segment_map elf32_arm_modify_segment_map |
8104 | #define elf_backend_additional_program_headers \ | |
8105 | elf32_arm_additional_program_headers | |
252b5132 | 8106 | |
5e681ec4 | 8107 | #define elf_backend_can_refcount 1 |
252b5132 RH |
8108 | #define elf_backend_can_gc_sections 1 |
8109 | #define elf_backend_plt_readonly 1 | |
8110 | #define elf_backend_want_got_plt 1 | |
8111 | #define elf_backend_want_plt_sym 0 | |
4e7fd91e PB |
8112 | #define elf_backend_may_use_rel_p 1 |
8113 | #define elf_backend_may_use_rela_p 0 | |
8114 | #define elf_backend_default_use_rela_p 0 | |
8115 | #define elf_backend_rela_normal 0 | |
252b5132 | 8116 | |
04f7c78d | 8117 | #define elf_backend_got_header_size 12 |
04f7c78d | 8118 | |
252b5132 | 8119 | #include "elf32-target.h" |
7f266840 | 8120 | |
4e7fd91e PB |
8121 | /* VxWorks Targets */ |
8122 | ||
8123 | #undef TARGET_LITTLE_SYM | |
8124 | #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec | |
8125 | #undef TARGET_LITTLE_NAME | |
8126 | #define TARGET_LITTLE_NAME "elf32-littlearm-vxworks" | |
8127 | #undef TARGET_BIG_SYM | |
8128 | #define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec | |
8129 | #undef TARGET_BIG_NAME | |
8130 | #define TARGET_BIG_NAME "elf32-bigarm-vxworks" | |
8131 | ||
8132 | /* Like elf32_arm_link_hash_table_create -- but overrides | |
8133 | appropriately for VxWorks. */ | |
8134 | static struct bfd_link_hash_table * | |
8135 | elf32_arm_vxworks_link_hash_table_create (bfd *abfd) | |
8136 | { | |
8137 | struct bfd_link_hash_table *ret; | |
8138 | ||
8139 | ret = elf32_arm_link_hash_table_create (abfd); | |
8140 | if (ret) | |
8141 | { | |
8142 | struct elf32_arm_link_hash_table *htab | |
00a97672 | 8143 | = (struct elf32_arm_link_hash_table *) ret; |
4e7fd91e | 8144 | htab->use_rel = 0; |
00a97672 | 8145 | htab->vxworks_p = 1; |
4e7fd91e PB |
8146 | } |
8147 | return ret; | |
8148 | } | |
8149 | ||
00a97672 RS |
8150 | static void |
8151 | elf32_arm_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker) | |
8152 | { | |
8153 | elf32_arm_final_write_processing (abfd, linker); | |
8154 | elf_vxworks_final_write_processing (abfd, linker); | |
8155 | } | |
8156 | ||
4e7fd91e PB |
8157 | #undef elf32_bed |
8158 | #define elf32_bed elf32_arm_vxworks_bed | |
8159 | ||
8160 | #undef bfd_elf32_bfd_link_hash_table_create | |
8161 | #define bfd_elf32_bfd_link_hash_table_create \ | |
8162 | elf32_arm_vxworks_link_hash_table_create | |
00a97672 RS |
8163 | #undef elf_backend_add_symbol_hook |
8164 | #define elf_backend_add_symbol_hook \ | |
8165 | elf_vxworks_add_symbol_hook | |
8166 | #undef elf_backend_final_write_processing | |
8167 | #define elf_backend_final_write_processing \ | |
8168 | elf32_arm_vxworks_final_write_processing | |
8169 | #undef elf_backend_emit_relocs | |
8170 | #define elf_backend_emit_relocs \ | |
8171 | elf_vxworks_emit_relocs | |
4e7fd91e PB |
8172 | |
8173 | #undef elf_backend_may_use_rel_p | |
00a97672 | 8174 | #define elf_backend_may_use_rel_p 0 |
4e7fd91e | 8175 | #undef elf_backend_may_use_rela_p |
00a97672 | 8176 | #define elf_backend_may_use_rela_p 1 |
4e7fd91e | 8177 | #undef elf_backend_default_use_rela_p |
00a97672 | 8178 | #define elf_backend_default_use_rela_p 1 |
4e7fd91e | 8179 | #undef elf_backend_rela_normal |
00a97672 RS |
8180 | #define elf_backend_rela_normal 1 |
8181 | #undef elf_backend_want_plt_sym | |
8182 | #define elf_backend_want_plt_sym 1 | |
8183 | #undef ELF_MAXPAGESIZE | |
8184 | #define ELF_MAXPAGESIZE 0x1000 | |
4e7fd91e PB |
8185 | |
8186 | #include "elf32-target.h" | |
8187 | ||
8188 | ||
7f266840 DJ |
8189 | /* Symbian OS Targets */ |
8190 | ||
8191 | #undef TARGET_LITTLE_SYM | |
8192 | #define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec | |
8193 | #undef TARGET_LITTLE_NAME | |
8194 | #define TARGET_LITTLE_NAME "elf32-littlearm-symbian" | |
8195 | #undef TARGET_BIG_SYM | |
8196 | #define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec | |
8197 | #undef TARGET_BIG_NAME | |
8198 | #define TARGET_BIG_NAME "elf32-bigarm-symbian" | |
8199 | ||
8200 | /* Like elf32_arm_link_hash_table_create -- but overrides | |
8201 | appropriately for Symbian OS. */ | |
8202 | static struct bfd_link_hash_table * | |
8203 | elf32_arm_symbian_link_hash_table_create (bfd *abfd) | |
8204 | { | |
8205 | struct bfd_link_hash_table *ret; | |
8206 | ||
8207 | ret = elf32_arm_link_hash_table_create (abfd); | |
8208 | if (ret) | |
8209 | { | |
8210 | struct elf32_arm_link_hash_table *htab | |
8211 | = (struct elf32_arm_link_hash_table *)ret; | |
8212 | /* There is no PLT header for Symbian OS. */ | |
8213 | htab->plt_header_size = 0; | |
8214 | /* The PLT entries are each three instructions. */ | |
8215 | htab->plt_entry_size = 4 * NUM_ELEM (elf32_arm_symbian_plt_entry); | |
8216 | htab->symbian_p = 1; | |
33bfe774 JB |
8217 | /* Symbian uses armv5t or above, so use_blx is always true. */ |
8218 | htab->use_blx = 1; | |
67687978 | 8219 | htab->root.is_relocatable_executable = 1; |
7f266840 DJ |
8220 | } |
8221 | return ret; | |
8222 | } | |
8223 | ||
b35d266b | 8224 | static const struct bfd_elf_special_section |
551b43fd | 8225 | elf32_arm_symbian_special_sections[] = |
7f266840 | 8226 | { |
5cd3778d MM |
8227 | /* In a BPABI executable, the dynamic linking sections do not go in |
8228 | the loadable read-only segment. The post-linker may wish to | |
8229 | refer to these sections, but they are not part of the final | |
8230 | program image. */ | |
7f266840 DJ |
8231 | { ".dynamic", 8, 0, SHT_DYNAMIC, 0 }, |
8232 | { ".dynstr", 7, 0, SHT_STRTAB, 0 }, | |
8233 | { ".dynsym", 7, 0, SHT_DYNSYM, 0 }, | |
8234 | { ".got", 4, 0, SHT_PROGBITS, 0 }, | |
8235 | { ".hash", 5, 0, SHT_HASH, 0 }, | |
5cd3778d MM |
8236 | /* These sections do not need to be writable as the SymbianOS |
8237 | postlinker will arrange things so that no dynamic relocation is | |
8238 | required. */ | |
8239 | { ".init_array", 11, 0, SHT_INIT_ARRAY, SHF_ALLOC }, | |
8240 | { ".fini_array", 11, 0, SHT_FINI_ARRAY, SHF_ALLOC }, | |
8241 | { ".preinit_array", 14, 0, SHT_PREINIT_ARRAY, SHF_ALLOC }, | |
7f266840 DJ |
8242 | { NULL, 0, 0, 0, 0 } |
8243 | }; | |
8244 | ||
c3c76620 | 8245 | static void |
b34af79c MM |
8246 | elf32_arm_symbian_begin_write_processing (bfd *abfd, |
8247 | struct bfd_link_info *link_info | |
8248 | ATTRIBUTE_UNUSED) | |
c3c76620 MM |
8249 | { |
8250 | /* BPABI objects are never loaded directly by an OS kernel; they are | |
8251 | processed by a postlinker first, into an OS-specific format. If | |
8252 | the D_PAGED bit is set on the file, BFD will align segments on | |
8253 | page boundaries, so that an OS can directly map the file. With | |
8254 | BPABI objects, that just results in wasted space. In addition, | |
8255 | because we clear the D_PAGED bit, map_sections_to_segments will | |
8256 | recognize that the program headers should not be mapped into any | |
8257 | loadable segment. */ | |
8258 | abfd->flags &= ~D_PAGED; | |
8259 | } | |
7f266840 DJ |
8260 | |
8261 | static bfd_boolean | |
b34af79c | 8262 | elf32_arm_symbian_modify_segment_map (bfd *abfd, |
b294bdf8 | 8263 | struct bfd_link_info *info) |
7f266840 DJ |
8264 | { |
8265 | struct elf_segment_map *m; | |
8266 | asection *dynsec; | |
8267 | ||
7f266840 DJ |
8268 | /* BPABI shared libraries and executables should have a PT_DYNAMIC |
8269 | segment. However, because the .dynamic section is not marked | |
8270 | with SEC_LOAD, the generic ELF code will not create such a | |
8271 | segment. */ | |
8272 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); | |
8273 | if (dynsec) | |
8274 | { | |
8275 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); | |
8276 | m->next = elf_tdata (abfd)->segment_map; | |
8277 | elf_tdata (abfd)->segment_map = m; | |
8278 | } | |
8279 | ||
b294bdf8 MM |
8280 | /* Also call the generic arm routine. */ |
8281 | return elf32_arm_modify_segment_map (abfd, info); | |
7f266840 DJ |
8282 | } |
8283 | ||
8284 | #undef elf32_bed | |
8285 | #define elf32_bed elf32_arm_symbian_bed | |
8286 | ||
8287 | /* The dynamic sections are not allocated on SymbianOS; the postlinker | |
8288 | will process them and then discard them. */ | |
8289 | #undef ELF_DYNAMIC_SEC_FLAGS | |
8290 | #define ELF_DYNAMIC_SEC_FLAGS \ | |
8291 | (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED) | |
8292 | ||
8293 | #undef bfd_elf32_bfd_link_hash_table_create | |
8294 | #define bfd_elf32_bfd_link_hash_table_create \ | |
8295 | elf32_arm_symbian_link_hash_table_create | |
00a97672 | 8296 | #undef elf_backend_add_symbol_hook |
7f266840 | 8297 | |
29ef7005 L |
8298 | #undef elf_backend_special_sections |
8299 | #define elf_backend_special_sections elf32_arm_symbian_special_sections | |
7f266840 | 8300 | |
c3c76620 MM |
8301 | #undef elf_backend_begin_write_processing |
8302 | #define elf_backend_begin_write_processing \ | |
8303 | elf32_arm_symbian_begin_write_processing | |
00a97672 RS |
8304 | #undef elf_backend_final_write_processing |
8305 | #define elf_backend_final_write_processing \ | |
8306 | elf32_arm_final_write_processing | |
8307 | #undef elf_backend_emit_relocs | |
c3c76620 | 8308 | |
7f266840 DJ |
8309 | #undef elf_backend_modify_segment_map |
8310 | #define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map | |
8311 | ||
8312 | /* There is no .got section for BPABI objects, and hence no header. */ | |
8313 | #undef elf_backend_got_header_size | |
8314 | #define elf_backend_got_header_size 0 | |
8315 | ||
8316 | /* Similarly, there is no .got.plt section. */ | |
8317 | #undef elf_backend_want_got_plt | |
8318 | #define elf_backend_want_got_plt 0 | |
8319 | ||
4e7fd91e | 8320 | #undef elf_backend_may_use_rel_p |
00a97672 | 8321 | #define elf_backend_may_use_rel_p 1 |
4e7fd91e | 8322 | #undef elf_backend_may_use_rela_p |
00a97672 | 8323 | #define elf_backend_may_use_rela_p 0 |
4e7fd91e | 8324 | #undef elf_backend_default_use_rela_p |
00a97672 | 8325 | #define elf_backend_default_use_rela_p 0 |
4e7fd91e | 8326 | #undef elf_backend_rela_normal |
00a97672 RS |
8327 | #define elf_backend_rela_normal 0 |
8328 | #undef elf_backend_want_plt_sym | |
8329 | #define elf_backend_want_plt_sym 0 | |
8330 | #undef ELF_MAXPAGESIZE | |
8331 | #define ELF_MAXPAGESIZE 0x8000 | |
4e7fd91e | 8332 | |
7f266840 | 8333 | #include "elf32-target.h" |