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 | ||
3a4a14e9 PB |
1455 | /* In lieu of proper flags, assume all EABIv4 or later objects are |
1456 | interworkable. */ | |
57e8b36a | 1457 | #define INTERWORK_FLAG(abfd) \ |
3a4a14e9 | 1458 | (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \ |
85a84e7a | 1459 | || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK)) |
9b485d32 | 1460 | |
252b5132 RH |
1461 | /* The linker script knows the section names for placement. |
1462 | The entry_names are used to do simple name mangling on the stubs. | |
1463 | Given a function name, and its type, the stub can be found. The | |
9b485d32 | 1464 | name can be changed. The only requirement is the %s be present. */ |
252b5132 RH |
1465 | #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t" |
1466 | #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb" | |
1467 | ||
1468 | #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7" | |
1469 | #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm" | |
1470 | ||
1471 | /* The name of the dynamic interpreter. This is put in the .interp | |
1472 | section. */ | |
1473 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
1474 | ||
5e681ec4 PB |
1475 | #ifdef FOUR_WORD_PLT |
1476 | ||
252b5132 RH |
1477 | /* The first entry in a procedure linkage table looks like |
1478 | this. It is set up so that any shared library function that is | |
59f2c4e7 | 1479 | called before the relocation has been set up calls the dynamic |
9b485d32 | 1480 | linker first. */ |
e5a52504 | 1481 | static const bfd_vma elf32_arm_plt0_entry [] = |
5e681ec4 PB |
1482 | { |
1483 | 0xe52de004, /* str lr, [sp, #-4]! */ | |
1484 | 0xe59fe010, /* ldr lr, [pc, #16] */ | |
1485 | 0xe08fe00e, /* add lr, pc, lr */ | |
1486 | 0xe5bef008, /* ldr pc, [lr, #8]! */ | |
1487 | }; | |
1488 | ||
1489 | /* Subsequent entries in a procedure linkage table look like | |
1490 | this. */ | |
e5a52504 | 1491 | static const bfd_vma elf32_arm_plt_entry [] = |
5e681ec4 PB |
1492 | { |
1493 | 0xe28fc600, /* add ip, pc, #NN */ | |
1494 | 0xe28cca00, /* add ip, ip, #NN */ | |
1495 | 0xe5bcf000, /* ldr pc, [ip, #NN]! */ | |
1496 | 0x00000000, /* unused */ | |
1497 | }; | |
1498 | ||
1499 | #else | |
1500 | ||
5e681ec4 PB |
1501 | /* The first entry in a procedure linkage table looks like |
1502 | this. It is set up so that any shared library function that is | |
1503 | called before the relocation has been set up calls the dynamic | |
1504 | linker first. */ | |
e5a52504 | 1505 | static const bfd_vma elf32_arm_plt0_entry [] = |
917583ad | 1506 | { |
5e681ec4 PB |
1507 | 0xe52de004, /* str lr, [sp, #-4]! */ |
1508 | 0xe59fe004, /* ldr lr, [pc, #4] */ | |
1509 | 0xe08fe00e, /* add lr, pc, lr */ | |
1510 | 0xe5bef008, /* ldr pc, [lr, #8]! */ | |
1511 | 0x00000000, /* &GOT[0] - . */ | |
917583ad | 1512 | }; |
252b5132 RH |
1513 | |
1514 | /* Subsequent entries in a procedure linkage table look like | |
1515 | this. */ | |
e5a52504 | 1516 | static const bfd_vma elf32_arm_plt_entry [] = |
5e681ec4 PB |
1517 | { |
1518 | 0xe28fc600, /* add ip, pc, #0xNN00000 */ | |
1519 | 0xe28cca00, /* add ip, ip, #0xNN000 */ | |
1520 | 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */ | |
1521 | }; | |
1522 | ||
1523 | #endif | |
252b5132 | 1524 | |
00a97672 RS |
1525 | /* The format of the first entry in the procedure linkage table |
1526 | for a VxWorks executable. */ | |
1527 | static const bfd_vma elf32_arm_vxworks_exec_plt0_entry[] = | |
1528 | { | |
1529 | 0xe52dc008, /* str ip,[sp,#-8]! */ | |
1530 | 0xe59fc000, /* ldr ip,[pc] */ | |
1531 | 0xe59cf008, /* ldr pc,[ip,#8] */ | |
1532 | 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */ | |
1533 | }; | |
1534 | ||
1535 | /* The format of subsequent entries in a VxWorks executable. */ | |
1536 | static const bfd_vma elf32_arm_vxworks_exec_plt_entry[] = | |
1537 | { | |
1538 | 0xe59fc000, /* ldr ip,[pc] */ | |
1539 | 0xe59cf000, /* ldr pc,[ip] */ | |
1540 | 0x00000000, /* .long @got */ | |
1541 | 0xe59fc000, /* ldr ip,[pc] */ | |
1542 | 0xea000000, /* b _PLT */ | |
1543 | 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */ | |
1544 | }; | |
1545 | ||
1546 | /* The format of entries in a VxWorks shared library. */ | |
1547 | static const bfd_vma elf32_arm_vxworks_shared_plt_entry[] = | |
1548 | { | |
1549 | 0xe59fc000, /* ldr ip,[pc] */ | |
1550 | 0xe79cf009, /* ldr pc,[ip,r9] */ | |
1551 | 0x00000000, /* .long @got */ | |
1552 | 0xe59fc000, /* ldr ip,[pc] */ | |
1553 | 0xe599f008, /* ldr pc,[r9,#8] */ | |
1554 | 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */ | |
1555 | }; | |
1556 | ||
b7693d02 DJ |
1557 | /* An initial stub used if the PLT entry is referenced from Thumb code. */ |
1558 | #define PLT_THUMB_STUB_SIZE 4 | |
1559 | static const bfd_vma elf32_arm_plt_thumb_stub [] = | |
1560 | { | |
1561 | 0x4778, /* bx pc */ | |
1562 | 0x46c0 /* nop */ | |
1563 | }; | |
1564 | ||
e5a52504 MM |
1565 | /* The entries in a PLT when using a DLL-based target with multiple |
1566 | address spaces. */ | |
1567 | static const bfd_vma elf32_arm_symbian_plt_entry [] = | |
1568 | { | |
83a358aa | 1569 | 0xe51ff004, /* ldr pc, [pc, #-4] */ |
e5a52504 MM |
1570 | 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */ |
1571 | }; | |
1572 | ||
e489d0ae PB |
1573 | /* Used to build a map of a section. This is required for mixed-endian |
1574 | code/data. */ | |
1575 | ||
1576 | typedef struct elf32_elf_section_map | |
1577 | { | |
1578 | bfd_vma vma; | |
1579 | char type; | |
1580 | } | |
1581 | elf32_arm_section_map; | |
1582 | ||
8e3de13a | 1583 | typedef struct _arm_elf_section_data |
e489d0ae PB |
1584 | { |
1585 | struct bfd_elf_section_data elf; | |
8e3de13a | 1586 | unsigned int mapcount; |
e489d0ae | 1587 | elf32_arm_section_map *map; |
8e3de13a NC |
1588 | } |
1589 | _arm_elf_section_data; | |
e489d0ae PB |
1590 | |
1591 | #define elf32_arm_section_data(sec) \ | |
8e3de13a | 1592 | ((_arm_elf_section_data *) elf_section_data (sec)) |
e489d0ae | 1593 | |
ba93b8ac DJ |
1594 | /* The size of the thread control block. */ |
1595 | #define TCB_SIZE 8 | |
1596 | ||
ee065d83 PB |
1597 | #define NUM_KNOWN_ATTRIBUTES 32 |
1598 | ||
1599 | typedef struct aeabi_attribute | |
1600 | { | |
1601 | int type; | |
1602 | unsigned int i; | |
1603 | char *s; | |
1604 | } aeabi_attribute; | |
1605 | ||
1606 | typedef struct aeabi_attribute_list | |
1607 | { | |
1608 | struct aeabi_attribute_list *next; | |
1609 | int tag; | |
1610 | aeabi_attribute attr; | |
1611 | } aeabi_attribute_list; | |
1612 | ||
ba93b8ac DJ |
1613 | struct elf32_arm_obj_tdata |
1614 | { | |
1615 | struct elf_obj_tdata root; | |
1616 | ||
1617 | /* tls_type for each local got entry. */ | |
1618 | char *local_got_tls_type; | |
ee065d83 PB |
1619 | |
1620 | aeabi_attribute known_eabi_attributes[NUM_KNOWN_ATTRIBUTES]; | |
1621 | aeabi_attribute_list *other_eabi_attributes; | |
ba93b8ac DJ |
1622 | }; |
1623 | ||
1624 | #define elf32_arm_tdata(abfd) \ | |
1625 | ((struct elf32_arm_obj_tdata *) (abfd)->tdata.any) | |
1626 | ||
1627 | #define elf32_arm_local_got_tls_type(abfd) \ | |
1628 | (elf32_arm_tdata (abfd)->local_got_tls_type) | |
1629 | ||
1630 | static bfd_boolean | |
1631 | elf32_arm_mkobject (bfd *abfd) | |
1632 | { | |
1633 | bfd_size_type amt = sizeof (struct elf32_arm_obj_tdata); | |
1634 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
1635 | if (abfd->tdata.any == NULL) | |
1636 | return FALSE; | |
1637 | return TRUE; | |
1638 | } | |
1639 | ||
252b5132 RH |
1640 | /* The ARM linker needs to keep track of the number of relocs that it |
1641 | decides to copy in check_relocs for each symbol. This is so that | |
1642 | it can discard PC relative relocs if it doesn't need them when | |
1643 | linking with -Bsymbolic. We store the information in a field | |
1644 | extending the regular ELF linker hash table. */ | |
1645 | ||
ba93b8ac DJ |
1646 | /* This structure keeps track of the number of relocs we have copied |
1647 | for a given symbol. */ | |
5e681ec4 | 1648 | struct elf32_arm_relocs_copied |
917583ad NC |
1649 | { |
1650 | /* Next section. */ | |
5e681ec4 | 1651 | struct elf32_arm_relocs_copied * next; |
917583ad NC |
1652 | /* A section in dynobj. */ |
1653 | asection * section; | |
1654 | /* Number of relocs copied in this section. */ | |
1655 | bfd_size_type count; | |
ba93b8ac DJ |
1656 | /* Number of PC-relative relocs copied in this section. */ |
1657 | bfd_size_type pc_count; | |
917583ad | 1658 | }; |
252b5132 | 1659 | |
ba93b8ac DJ |
1660 | #define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent)) |
1661 | ||
ba96a88f | 1662 | /* Arm ELF linker hash entry. */ |
252b5132 | 1663 | struct elf32_arm_link_hash_entry |
917583ad NC |
1664 | { |
1665 | struct elf_link_hash_entry root; | |
252b5132 | 1666 | |
917583ad | 1667 | /* Number of PC relative relocs copied for this symbol. */ |
5e681ec4 | 1668 | struct elf32_arm_relocs_copied * relocs_copied; |
b7693d02 DJ |
1669 | |
1670 | /* We reference count Thumb references to a PLT entry separately, | |
1671 | so that we can emit the Thumb trampoline only if needed. */ | |
1672 | bfd_signed_vma plt_thumb_refcount; | |
1673 | ||
1674 | /* Since PLT entries have variable size if the Thumb prologue is | |
1675 | used, we need to record the index into .got.plt instead of | |
1676 | recomputing it from the PLT offset. */ | |
1677 | bfd_signed_vma plt_got_offset; | |
ba93b8ac DJ |
1678 | |
1679 | #define GOT_UNKNOWN 0 | |
1680 | #define GOT_NORMAL 1 | |
1681 | #define GOT_TLS_GD 2 | |
1682 | #define GOT_TLS_IE 4 | |
1683 | unsigned char tls_type; | |
917583ad | 1684 | }; |
252b5132 | 1685 | |
252b5132 | 1686 | /* Traverse an arm ELF linker hash table. */ |
252b5132 RH |
1687 | #define elf32_arm_link_hash_traverse(table, func, info) \ |
1688 | (elf_link_hash_traverse \ | |
1689 | (&(table)->root, \ | |
b7693d02 | 1690 | (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
252b5132 RH |
1691 | (info))) |
1692 | ||
1693 | /* Get the ARM elf linker hash table from a link_info structure. */ | |
1694 | #define elf32_arm_hash_table(info) \ | |
1695 | ((struct elf32_arm_link_hash_table *) ((info)->hash)) | |
1696 | ||
9b485d32 | 1697 | /* ARM ELF linker hash table. */ |
252b5132 | 1698 | struct elf32_arm_link_hash_table |
917583ad NC |
1699 | { |
1700 | /* The main hash table. */ | |
1701 | struct elf_link_hash_table root; | |
252b5132 | 1702 | |
4cc11e76 | 1703 | /* The size in bytes of the section containing the Thumb-to-ARM glue. */ |
dc810e39 | 1704 | bfd_size_type thumb_glue_size; |
252b5132 | 1705 | |
4cc11e76 | 1706 | /* The size in bytes of the section containing the ARM-to-Thumb glue. */ |
dc810e39 | 1707 | bfd_size_type arm_glue_size; |
252b5132 | 1708 | |
4cc11e76 | 1709 | /* An arbitrary input BFD chosen to hold the glue sections. */ |
917583ad | 1710 | bfd * bfd_of_glue_owner; |
ba96a88f | 1711 | |
e489d0ae PB |
1712 | /* Nonzero to output a BE8 image. */ |
1713 | int byteswap_code; | |
1714 | ||
9c504268 PB |
1715 | /* Zero if R_ARM_TARGET1 means R_ARM_ABS32. |
1716 | Nonzero if R_ARM_TARGET1 means R_ARM_ABS32. */ | |
1717 | int target1_is_rel; | |
1718 | ||
eb043451 PB |
1719 | /* The relocation to use for R_ARM_TARGET2 relocations. */ |
1720 | int target2_reloc; | |
1721 | ||
319850b4 JB |
1722 | /* Nonzero to fix BX instructions for ARMv4 targets. */ |
1723 | int fix_v4bx; | |
1724 | ||
33bfe774 JB |
1725 | /* Nonzero if the ARM/Thumb BLX instructions are available for use. */ |
1726 | int use_blx; | |
1727 | ||
e5a52504 MM |
1728 | /* The number of bytes in the initial entry in the PLT. */ |
1729 | bfd_size_type plt_header_size; | |
1730 | ||
1731 | /* The number of bytes in the subsequent PLT etries. */ | |
1732 | bfd_size_type plt_entry_size; | |
1733 | ||
00a97672 RS |
1734 | /* True if the target system is VxWorks. */ |
1735 | int vxworks_p; | |
1736 | ||
e5a52504 MM |
1737 | /* True if the target system is Symbian OS. */ |
1738 | int symbian_p; | |
1739 | ||
4e7fd91e PB |
1740 | /* True if the target uses REL relocations. */ |
1741 | int use_rel; | |
1742 | ||
5e681ec4 PB |
1743 | /* Short-cuts to get to dynamic linker sections. */ |
1744 | asection *sgot; | |
1745 | asection *sgotplt; | |
1746 | asection *srelgot; | |
1747 | asection *splt; | |
1748 | asection *srelplt; | |
1749 | asection *sdynbss; | |
1750 | asection *srelbss; | |
1751 | ||
00a97672 RS |
1752 | /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */ |
1753 | asection *srelplt2; | |
1754 | ||
ba93b8ac DJ |
1755 | /* Data for R_ARM_TLS_LDM32 relocations. */ |
1756 | union { | |
1757 | bfd_signed_vma refcount; | |
1758 | bfd_vma offset; | |
1759 | } tls_ldm_got; | |
1760 | ||
5e681ec4 PB |
1761 | /* Small local sym to section mapping cache. */ |
1762 | struct sym_sec_cache sym_sec; | |
b7693d02 DJ |
1763 | |
1764 | /* For convenience in allocate_dynrelocs. */ | |
1765 | bfd * obfd; | |
917583ad | 1766 | }; |
252b5132 | 1767 | |
780a67af NC |
1768 | /* Create an entry in an ARM ELF linker hash table. */ |
1769 | ||
1770 | static struct bfd_hash_entry * | |
57e8b36a NC |
1771 | elf32_arm_link_hash_newfunc (struct bfd_hash_entry * entry, |
1772 | struct bfd_hash_table * table, | |
1773 | const char * string) | |
780a67af NC |
1774 | { |
1775 | struct elf32_arm_link_hash_entry * ret = | |
1776 | (struct elf32_arm_link_hash_entry *) entry; | |
1777 | ||
1778 | /* Allocate the structure if it has not already been allocated by a | |
1779 | subclass. */ | |
1780 | if (ret == (struct elf32_arm_link_hash_entry *) NULL) | |
57e8b36a NC |
1781 | ret = bfd_hash_allocate (table, sizeof (struct elf32_arm_link_hash_entry)); |
1782 | if (ret == NULL) | |
780a67af NC |
1783 | return (struct bfd_hash_entry *) ret; |
1784 | ||
1785 | /* Call the allocation method of the superclass. */ | |
1786 | ret = ((struct elf32_arm_link_hash_entry *) | |
1787 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
1788 | table, string)); | |
57e8b36a | 1789 | if (ret != NULL) |
b7693d02 DJ |
1790 | { |
1791 | ret->relocs_copied = NULL; | |
ba93b8ac | 1792 | ret->tls_type = GOT_UNKNOWN; |
b7693d02 DJ |
1793 | ret->plt_thumb_refcount = 0; |
1794 | ret->plt_got_offset = -1; | |
1795 | } | |
780a67af NC |
1796 | |
1797 | return (struct bfd_hash_entry *) ret; | |
1798 | } | |
1799 | ||
00a97672 RS |
1800 | /* Return true if NAME is the name of the relocation section associated |
1801 | with S. */ | |
1802 | ||
1803 | static bfd_boolean | |
1804 | reloc_section_p (struct elf32_arm_link_hash_table *htab, | |
1805 | const char *name, asection *s) | |
1806 | { | |
1807 | if (htab->use_rel) | |
1808 | return strncmp (name, ".rel", 4) == 0 && strcmp (s->name, name + 4) == 0; | |
1809 | else | |
1810 | return strncmp (name, ".rela", 5) == 0 && strcmp (s->name, name + 5) == 0; | |
1811 | } | |
1812 | ||
1813 | /* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up | |
5e681ec4 PB |
1814 | shortcuts to them in our hash table. */ |
1815 | ||
1816 | static bfd_boolean | |
57e8b36a | 1817 | create_got_section (bfd *dynobj, struct bfd_link_info *info) |
5e681ec4 PB |
1818 | { |
1819 | struct elf32_arm_link_hash_table *htab; | |
1820 | ||
e5a52504 MM |
1821 | htab = elf32_arm_hash_table (info); |
1822 | /* BPABI objects never have a GOT, or associated sections. */ | |
1823 | if (htab->symbian_p) | |
1824 | return TRUE; | |
1825 | ||
5e681ec4 PB |
1826 | if (! _bfd_elf_create_got_section (dynobj, info)) |
1827 | return FALSE; | |
1828 | ||
5e681ec4 PB |
1829 | htab->sgot = bfd_get_section_by_name (dynobj, ".got"); |
1830 | htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
1831 | if (!htab->sgot || !htab->sgotplt) | |
1832 | abort (); | |
1833 | ||
00a97672 RS |
1834 | htab->srelgot = bfd_make_section_with_flags (dynobj, |
1835 | RELOC_SECTION (htab, ".got"), | |
3496cb2a L |
1836 | (SEC_ALLOC | SEC_LOAD |
1837 | | SEC_HAS_CONTENTS | |
1838 | | SEC_IN_MEMORY | |
1839 | | SEC_LINKER_CREATED | |
1840 | | SEC_READONLY)); | |
5e681ec4 | 1841 | if (htab->srelgot == NULL |
5e681ec4 PB |
1842 | || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2)) |
1843 | return FALSE; | |
1844 | return TRUE; | |
1845 | } | |
1846 | ||
00a97672 RS |
1847 | /* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and |
1848 | .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our | |
5e681ec4 PB |
1849 | hash table. */ |
1850 | ||
1851 | static bfd_boolean | |
57e8b36a | 1852 | elf32_arm_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5e681ec4 PB |
1853 | { |
1854 | struct elf32_arm_link_hash_table *htab; | |
1855 | ||
1856 | htab = elf32_arm_hash_table (info); | |
1857 | if (!htab->sgot && !create_got_section (dynobj, info)) | |
1858 | return FALSE; | |
1859 | ||
1860 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
1861 | return FALSE; | |
1862 | ||
1863 | htab->splt = bfd_get_section_by_name (dynobj, ".plt"); | |
00a97672 RS |
1864 | htab->srelplt = bfd_get_section_by_name (dynobj, |
1865 | RELOC_SECTION (htab, ".plt")); | |
5e681ec4 PB |
1866 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); |
1867 | if (!info->shared) | |
00a97672 RS |
1868 | htab->srelbss = bfd_get_section_by_name (dynobj, |
1869 | RELOC_SECTION (htab, ".bss")); | |
1870 | ||
1871 | if (htab->vxworks_p) | |
1872 | { | |
1873 | if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2)) | |
1874 | return FALSE; | |
1875 | ||
1876 | if (info->shared) | |
1877 | { | |
1878 | htab->plt_header_size = 0; | |
1879 | htab->plt_entry_size | |
1880 | = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry); | |
1881 | } | |
1882 | else | |
1883 | { | |
1884 | htab->plt_header_size | |
1885 | = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry); | |
1886 | htab->plt_entry_size | |
1887 | = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry); | |
1888 | } | |
1889 | } | |
5e681ec4 | 1890 | |
e5a52504 MM |
1891 | if (!htab->splt |
1892 | || !htab->srelplt | |
1893 | || !htab->sdynbss | |
5e681ec4 PB |
1894 | || (!info->shared && !htab->srelbss)) |
1895 | abort (); | |
1896 | ||
1897 | return TRUE; | |
1898 | } | |
1899 | ||
1900 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
1901 | ||
1902 | static void | |
fcfa13d2 | 1903 | elf32_arm_copy_indirect_symbol (struct bfd_link_info *info, |
5e681ec4 PB |
1904 | struct elf_link_hash_entry *dir, |
1905 | struct elf_link_hash_entry *ind) | |
1906 | { | |
1907 | struct elf32_arm_link_hash_entry *edir, *eind; | |
1908 | ||
1909 | edir = (struct elf32_arm_link_hash_entry *) dir; | |
1910 | eind = (struct elf32_arm_link_hash_entry *) ind; | |
1911 | ||
1912 | if (eind->relocs_copied != NULL) | |
1913 | { | |
1914 | if (edir->relocs_copied != NULL) | |
1915 | { | |
1916 | struct elf32_arm_relocs_copied **pp; | |
1917 | struct elf32_arm_relocs_copied *p; | |
1918 | ||
fcfa13d2 | 1919 | /* Add reloc counts against the indirect sym to the direct sym |
5e681ec4 PB |
1920 | list. Merge any entries against the same section. */ |
1921 | for (pp = &eind->relocs_copied; (p = *pp) != NULL; ) | |
1922 | { | |
1923 | struct elf32_arm_relocs_copied *q; | |
1924 | ||
1925 | for (q = edir->relocs_copied; q != NULL; q = q->next) | |
1926 | if (q->section == p->section) | |
1927 | { | |
ba93b8ac | 1928 | q->pc_count += p->pc_count; |
5e681ec4 PB |
1929 | q->count += p->count; |
1930 | *pp = p->next; | |
1931 | break; | |
1932 | } | |
1933 | if (q == NULL) | |
1934 | pp = &p->next; | |
1935 | } | |
1936 | *pp = edir->relocs_copied; | |
1937 | } | |
1938 | ||
1939 | edir->relocs_copied = eind->relocs_copied; | |
1940 | eind->relocs_copied = NULL; | |
1941 | } | |
1942 | ||
fcfa13d2 AM |
1943 | /* Copy over PLT info. */ |
1944 | edir->plt_thumb_refcount += eind->plt_thumb_refcount; | |
1945 | eind->plt_thumb_refcount = 0; | |
b7693d02 | 1946 | |
ba93b8ac DJ |
1947 | if (ind->root.type == bfd_link_hash_indirect |
1948 | && dir->got.refcount <= 0) | |
1949 | { | |
1950 | edir->tls_type = eind->tls_type; | |
1951 | eind->tls_type = GOT_UNKNOWN; | |
1952 | } | |
1953 | ||
fcfa13d2 | 1954 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
5e681ec4 PB |
1955 | } |
1956 | ||
9b485d32 | 1957 | /* Create an ARM elf linker hash table. */ |
252b5132 RH |
1958 | |
1959 | static struct bfd_link_hash_table * | |
57e8b36a | 1960 | elf32_arm_link_hash_table_create (bfd *abfd) |
252b5132 RH |
1961 | { |
1962 | struct elf32_arm_link_hash_table *ret; | |
dc810e39 | 1963 | bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table); |
252b5132 | 1964 | |
57e8b36a NC |
1965 | ret = bfd_malloc (amt); |
1966 | if (ret == NULL) | |
252b5132 RH |
1967 | return NULL; |
1968 | ||
57e8b36a | 1969 | if (!_bfd_elf_link_hash_table_init (& ret->root, abfd, |
780a67af | 1970 | elf32_arm_link_hash_newfunc)) |
252b5132 | 1971 | { |
e2d34d7d | 1972 | free (ret); |
252b5132 RH |
1973 | return NULL; |
1974 | } | |
1975 | ||
5e681ec4 PB |
1976 | ret->sgot = NULL; |
1977 | ret->sgotplt = NULL; | |
1978 | ret->srelgot = NULL; | |
1979 | ret->splt = NULL; | |
1980 | ret->srelplt = NULL; | |
1981 | ret->sdynbss = NULL; | |
1982 | ret->srelbss = NULL; | |
00a97672 | 1983 | ret->srelplt2 = NULL; |
252b5132 RH |
1984 | ret->thumb_glue_size = 0; |
1985 | ret->arm_glue_size = 0; | |
1986 | ret->bfd_of_glue_owner = NULL; | |
e489d0ae | 1987 | ret->byteswap_code = 0; |
9c504268 | 1988 | ret->target1_is_rel = 0; |
eb043451 | 1989 | ret->target2_reloc = R_ARM_NONE; |
e5a52504 MM |
1990 | #ifdef FOUR_WORD_PLT |
1991 | ret->plt_header_size = 16; | |
1992 | ret->plt_entry_size = 16; | |
1993 | #else | |
1994 | ret->plt_header_size = 20; | |
1995 | ret->plt_entry_size = 12; | |
1996 | #endif | |
33bfe774 JB |
1997 | ret->fix_v4bx = 0; |
1998 | ret->use_blx = 0; | |
00a97672 | 1999 | ret->vxworks_p = 0; |
e5a52504 | 2000 | ret->symbian_p = 0; |
4e7fd91e | 2001 | ret->use_rel = 1; |
5e681ec4 | 2002 | ret->sym_sec.abfd = NULL; |
b7693d02 | 2003 | ret->obfd = abfd; |
ba93b8ac | 2004 | ret->tls_ldm_got.refcount = 0; |
252b5132 RH |
2005 | |
2006 | return &ret->root.root; | |
2007 | } | |
2008 | ||
9b485d32 NC |
2009 | /* Locate the Thumb encoded calling stub for NAME. */ |
2010 | ||
252b5132 | 2011 | static struct elf_link_hash_entry * |
57e8b36a NC |
2012 | find_thumb_glue (struct bfd_link_info *link_info, |
2013 | const char *name, | |
2014 | bfd *input_bfd) | |
252b5132 RH |
2015 | { |
2016 | char *tmp_name; | |
2017 | struct elf_link_hash_entry *hash; | |
2018 | struct elf32_arm_link_hash_table *hash_table; | |
2019 | ||
2020 | /* We need a pointer to the armelf specific hash table. */ | |
2021 | hash_table = elf32_arm_hash_table (link_info); | |
2022 | ||
57e8b36a NC |
2023 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
2024 | + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1); | |
252b5132 RH |
2025 | |
2026 | BFD_ASSERT (tmp_name); | |
2027 | ||
2028 | sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); | |
2029 | ||
2030 | hash = elf_link_hash_lookup | |
b34976b6 | 2031 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 RH |
2032 | |
2033 | if (hash == NULL) | |
2034 | /* xgettext:c-format */ | |
d003868e AM |
2035 | (*_bfd_error_handler) (_("%B: unable to find THUMB glue '%s' for `%s'"), |
2036 | input_bfd, tmp_name, name); | |
252b5132 RH |
2037 | |
2038 | free (tmp_name); | |
2039 | ||
2040 | return hash; | |
2041 | } | |
2042 | ||
9b485d32 NC |
2043 | /* Locate the ARM encoded calling stub for NAME. */ |
2044 | ||
252b5132 | 2045 | static struct elf_link_hash_entry * |
57e8b36a NC |
2046 | find_arm_glue (struct bfd_link_info *link_info, |
2047 | const char *name, | |
2048 | bfd *input_bfd) | |
252b5132 RH |
2049 | { |
2050 | char *tmp_name; | |
2051 | struct elf_link_hash_entry *myh; | |
2052 | struct elf32_arm_link_hash_table *hash_table; | |
2053 | ||
2054 | /* We need a pointer to the elfarm specific hash table. */ | |
2055 | hash_table = elf32_arm_hash_table (link_info); | |
2056 | ||
57e8b36a NC |
2057 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
2058 | + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1); | |
252b5132 RH |
2059 | |
2060 | BFD_ASSERT (tmp_name); | |
2061 | ||
2062 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); | |
2063 | ||
2064 | myh = elf_link_hash_lookup | |
b34976b6 | 2065 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 RH |
2066 | |
2067 | if (myh == NULL) | |
2068 | /* xgettext:c-format */ | |
d003868e AM |
2069 | (*_bfd_error_handler) (_("%B: unable to find ARM glue '%s' for `%s'"), |
2070 | input_bfd, tmp_name, name); | |
252b5132 RH |
2071 | |
2072 | free (tmp_name); | |
2073 | ||
2074 | return myh; | |
2075 | } | |
2076 | ||
8f6277f5 | 2077 | /* ARM->Thumb glue (static images): |
252b5132 RH |
2078 | |
2079 | .arm | |
2080 | __func_from_arm: | |
2081 | ldr r12, __func_addr | |
2082 | bx r12 | |
2083 | __func_addr: | |
8f6277f5 | 2084 | .word func @ behave as if you saw a ARM_32 reloc. |
252b5132 | 2085 | |
8f6277f5 PB |
2086 | (relocatable images) |
2087 | .arm | |
2088 | __func_from_arm: | |
2089 | ldr r12, __func_offset | |
2090 | add r12, r12, pc | |
2091 | bx r12 | |
2092 | __func_offset: | |
2093 | .word func - . | |
2094 | */ | |
2095 | ||
2096 | #define ARM2THUMB_STATIC_GLUE_SIZE 12 | |
252b5132 RH |
2097 | static const insn32 a2t1_ldr_insn = 0xe59fc000; |
2098 | static const insn32 a2t2_bx_r12_insn = 0xe12fff1c; | |
2099 | static const insn32 a2t3_func_addr_insn = 0x00000001; | |
2100 | ||
8f6277f5 PB |
2101 | #define ARM2THUMB_PIC_GLUE_SIZE 16 |
2102 | static const insn32 a2t1p_ldr_insn = 0xe59fc004; | |
2103 | static const insn32 a2t2p_add_pc_insn = 0xe08cc00f; | |
2104 | static const insn32 a2t3p_bx_r12_insn = 0xe12fff1c; | |
2105 | ||
9b485d32 | 2106 | /* Thumb->ARM: Thumb->(non-interworking aware) ARM |
252b5132 RH |
2107 | |
2108 | .thumb .thumb | |
2109 | .align 2 .align 2 | |
2110 | __func_from_thumb: __func_from_thumb: | |
2111 | bx pc push {r6, lr} | |
2112 | nop ldr r6, __func_addr | |
2113 | .arm mov lr, pc | |
2114 | __func_change_to_arm: bx r6 | |
2115 | b func .arm | |
2116 | __func_back_to_thumb: | |
2117 | ldmia r13! {r6, lr} | |
2118 | bx lr | |
2119 | __func_addr: | |
9b485d32 | 2120 | .word func */ |
252b5132 RH |
2121 | |
2122 | #define THUMB2ARM_GLUE_SIZE 8 | |
2123 | static const insn16 t2a1_bx_pc_insn = 0x4778; | |
2124 | static const insn16 t2a2_noop_insn = 0x46c0; | |
2125 | static const insn32 t2a3_b_insn = 0xea000000; | |
2126 | ||
7e392df6 | 2127 | #ifndef ELFARM_NABI_C_INCLUDED |
b34976b6 | 2128 | bfd_boolean |
57e8b36a | 2129 | bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info * info) |
252b5132 RH |
2130 | { |
2131 | asection * s; | |
2132 | bfd_byte * foo; | |
2133 | struct elf32_arm_link_hash_table * globals; | |
2134 | ||
2135 | globals = elf32_arm_hash_table (info); | |
2136 | ||
2137 | BFD_ASSERT (globals != NULL); | |
2138 | ||
2139 | if (globals->arm_glue_size != 0) | |
2140 | { | |
2141 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
2142 | ||
dc810e39 AM |
2143 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, |
2144 | ARM2THUMB_GLUE_SECTION_NAME); | |
252b5132 RH |
2145 | |
2146 | BFD_ASSERT (s != NULL); | |
2147 | ||
57e8b36a | 2148 | foo = bfd_alloc (globals->bfd_of_glue_owner, globals->arm_glue_size); |
252b5132 | 2149 | |
eea6121a | 2150 | s->size = globals->arm_glue_size; |
252b5132 RH |
2151 | s->contents = foo; |
2152 | } | |
2153 | ||
2154 | if (globals->thumb_glue_size != 0) | |
2155 | { | |
2156 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
2157 | ||
2158 | s = bfd_get_section_by_name | |
2159 | (globals->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME); | |
2160 | ||
2161 | BFD_ASSERT (s != NULL); | |
2162 | ||
57e8b36a | 2163 | foo = bfd_alloc (globals->bfd_of_glue_owner, globals->thumb_glue_size); |
252b5132 | 2164 | |
eea6121a | 2165 | s->size = globals->thumb_glue_size; |
252b5132 RH |
2166 | s->contents = foo; |
2167 | } | |
2168 | ||
b34976b6 | 2169 | return TRUE; |
252b5132 RH |
2170 | } |
2171 | ||
2172 | static void | |
57e8b36a NC |
2173 | record_arm_to_thumb_glue (struct bfd_link_info * link_info, |
2174 | struct elf_link_hash_entry * h) | |
252b5132 RH |
2175 | { |
2176 | const char * name = h->root.root.string; | |
63b0f745 | 2177 | asection * s; |
252b5132 RH |
2178 | char * tmp_name; |
2179 | struct elf_link_hash_entry * myh; | |
14a793b2 | 2180 | struct bfd_link_hash_entry * bh; |
252b5132 | 2181 | struct elf32_arm_link_hash_table * globals; |
dc810e39 | 2182 | bfd_vma val; |
252b5132 RH |
2183 | |
2184 | globals = elf32_arm_hash_table (link_info); | |
2185 | ||
2186 | BFD_ASSERT (globals != NULL); | |
2187 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
2188 | ||
2189 | s = bfd_get_section_by_name | |
2190 | (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME); | |
2191 | ||
252b5132 RH |
2192 | BFD_ASSERT (s != NULL); |
2193 | ||
57e8b36a | 2194 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1); |
252b5132 RH |
2195 | |
2196 | BFD_ASSERT (tmp_name); | |
2197 | ||
2198 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); | |
2199 | ||
2200 | myh = elf_link_hash_lookup | |
b34976b6 | 2201 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 RH |
2202 | |
2203 | if (myh != NULL) | |
2204 | { | |
9b485d32 | 2205 | /* We've already seen this guy. */ |
252b5132 | 2206 | free (tmp_name); |
9b485d32 | 2207 | return; |
252b5132 RH |
2208 | } |
2209 | ||
57e8b36a NC |
2210 | /* The only trick here is using hash_table->arm_glue_size as the value. |
2211 | Even though the section isn't allocated yet, this is where we will be | |
2212 | putting it. */ | |
14a793b2 | 2213 | bh = NULL; |
dc810e39 AM |
2214 | val = globals->arm_glue_size + 1; |
2215 | _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner, | |
2216 | tmp_name, BSF_GLOBAL, s, val, | |
b34976b6 | 2217 | NULL, TRUE, FALSE, &bh); |
252b5132 | 2218 | |
b7693d02 DJ |
2219 | myh = (struct elf_link_hash_entry *) bh; |
2220 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
2221 | myh->forced_local = 1; | |
2222 | ||
252b5132 RH |
2223 | free (tmp_name); |
2224 | ||
8f6277f5 PB |
2225 | if ((link_info->shared || globals->root.is_relocatable_executable)) |
2226 | globals->arm_glue_size += ARM2THUMB_PIC_GLUE_SIZE; | |
2227 | else | |
2228 | globals->arm_glue_size += ARM2THUMB_STATIC_GLUE_SIZE; | |
252b5132 RH |
2229 | |
2230 | return; | |
2231 | } | |
2232 | ||
2233 | static void | |
57e8b36a NC |
2234 | record_thumb_to_arm_glue (struct bfd_link_info *link_info, |
2235 | struct elf_link_hash_entry *h) | |
252b5132 RH |
2236 | { |
2237 | const char *name = h->root.root.string; | |
63b0f745 | 2238 | asection *s; |
252b5132 RH |
2239 | char *tmp_name; |
2240 | struct elf_link_hash_entry *myh; | |
14a793b2 | 2241 | struct bfd_link_hash_entry *bh; |
252b5132 | 2242 | struct elf32_arm_link_hash_table *hash_table; |
dc810e39 | 2243 | bfd_vma val; |
252b5132 RH |
2244 | |
2245 | hash_table = elf32_arm_hash_table (link_info); | |
2246 | ||
2247 | BFD_ASSERT (hash_table != NULL); | |
2248 | BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL); | |
2249 | ||
2250 | s = bfd_get_section_by_name | |
2251 | (hash_table->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME); | |
2252 | ||
2253 | BFD_ASSERT (s != NULL); | |
2254 | ||
57e8b36a NC |
2255 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
2256 | + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1); | |
252b5132 RH |
2257 | |
2258 | BFD_ASSERT (tmp_name); | |
2259 | ||
2260 | sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); | |
2261 | ||
2262 | myh = elf_link_hash_lookup | |
b34976b6 | 2263 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 RH |
2264 | |
2265 | if (myh != NULL) | |
2266 | { | |
9b485d32 | 2267 | /* We've already seen this guy. */ |
252b5132 | 2268 | free (tmp_name); |
9b485d32 | 2269 | return; |
252b5132 RH |
2270 | } |
2271 | ||
14a793b2 | 2272 | bh = NULL; |
dc810e39 AM |
2273 | val = hash_table->thumb_glue_size + 1; |
2274 | _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, | |
2275 | tmp_name, BSF_GLOBAL, s, val, | |
b34976b6 | 2276 | NULL, TRUE, FALSE, &bh); |
252b5132 | 2277 | |
9b485d32 | 2278 | /* If we mark it 'Thumb', the disassembler will do a better job. */ |
14a793b2 | 2279 | myh = (struct elf_link_hash_entry *) bh; |
b7693d02 DJ |
2280 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC); |
2281 | myh->forced_local = 1; | |
252b5132 RH |
2282 | |
2283 | free (tmp_name); | |
2284 | ||
252b5132 RH |
2285 | #define CHANGE_TO_ARM "__%s_change_to_arm" |
2286 | #define BACK_FROM_ARM "__%s_back_from_arm" | |
2287 | ||
9b485d32 | 2288 | /* Allocate another symbol to mark where we switch to Arm mode. */ |
57e8b36a NC |
2289 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
2290 | + strlen (CHANGE_TO_ARM) + 1); | |
252b5132 RH |
2291 | |
2292 | BFD_ASSERT (tmp_name); | |
2293 | ||
2294 | sprintf (tmp_name, CHANGE_TO_ARM, name); | |
2295 | ||
14a793b2 | 2296 | bh = NULL; |
dc810e39 AM |
2297 | val = hash_table->thumb_glue_size + 4, |
2298 | _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, | |
2299 | tmp_name, BSF_LOCAL, s, val, | |
b34976b6 | 2300 | NULL, TRUE, FALSE, &bh); |
252b5132 RH |
2301 | |
2302 | free (tmp_name); | |
2303 | ||
2304 | hash_table->thumb_glue_size += THUMB2ARM_GLUE_SIZE; | |
2305 | ||
2306 | return; | |
2307 | } | |
2308 | ||
8afb0e02 NC |
2309 | /* Add the glue sections to ABFD. This function is called from the |
2310 | linker scripts in ld/emultempl/{armelf}.em. */ | |
9b485d32 | 2311 | |
b34976b6 | 2312 | bfd_boolean |
57e8b36a NC |
2313 | bfd_elf32_arm_add_glue_sections_to_bfd (bfd *abfd, |
2314 | struct bfd_link_info *info) | |
252b5132 | 2315 | { |
252b5132 RH |
2316 | flagword flags; |
2317 | asection *sec; | |
2318 | ||
8afb0e02 NC |
2319 | /* If we are only performing a partial |
2320 | link do not bother adding the glue. */ | |
1049f94e | 2321 | if (info->relocatable) |
b34976b6 | 2322 | return TRUE; |
252b5132 | 2323 | |
252b5132 RH |
2324 | sec = bfd_get_section_by_name (abfd, ARM2THUMB_GLUE_SECTION_NAME); |
2325 | ||
2326 | if (sec == NULL) | |
2327 | { | |
57db232e NC |
2328 | /* Note: we do not include the flag SEC_LINKER_CREATED, as this |
2329 | will prevent elf_link_input_bfd() from processing the contents | |
2330 | of this section. */ | |
811b4bf6 | 2331 | flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_CODE | SEC_READONLY; |
252b5132 | 2332 | |
3496cb2a L |
2333 | sec = bfd_make_section_with_flags (abfd, |
2334 | ARM2THUMB_GLUE_SECTION_NAME, | |
2335 | flags); | |
252b5132 RH |
2336 | |
2337 | if (sec == NULL | |
252b5132 | 2338 | || !bfd_set_section_alignment (abfd, sec, 2)) |
b34976b6 | 2339 | return FALSE; |
9a5aca8c | 2340 | |
57db232e NC |
2341 | /* Set the gc mark to prevent the section from being removed by garbage |
2342 | collection, despite the fact that no relocs refer to this section. */ | |
2343 | sec->gc_mark = 1; | |
252b5132 RH |
2344 | } |
2345 | ||
2346 | sec = bfd_get_section_by_name (abfd, THUMB2ARM_GLUE_SECTION_NAME); | |
2347 | ||
2348 | if (sec == NULL) | |
2349 | { | |
57e8b36a NC |
2350 | flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
2351 | | SEC_CODE | SEC_READONLY; | |
252b5132 | 2352 | |
3496cb2a L |
2353 | sec = bfd_make_section_with_flags (abfd, |
2354 | THUMB2ARM_GLUE_SECTION_NAME, | |
2355 | flags); | |
252b5132 RH |
2356 | |
2357 | if (sec == NULL | |
252b5132 | 2358 | || !bfd_set_section_alignment (abfd, sec, 2)) |
b34976b6 | 2359 | return FALSE; |
9a5aca8c | 2360 | |
57db232e | 2361 | sec->gc_mark = 1; |
252b5132 RH |
2362 | } |
2363 | ||
b34976b6 | 2364 | return TRUE; |
8afb0e02 NC |
2365 | } |
2366 | ||
2367 | /* Select a BFD to be used to hold the sections used by the glue code. | |
2368 | This function is called from the linker scripts in ld/emultempl/ | |
2369 | {armelf/pe}.em */ | |
2370 | ||
b34976b6 | 2371 | bfd_boolean |
57e8b36a | 2372 | bfd_elf32_arm_get_bfd_for_interworking (bfd *abfd, struct bfd_link_info *info) |
8afb0e02 NC |
2373 | { |
2374 | struct elf32_arm_link_hash_table *globals; | |
2375 | ||
2376 | /* If we are only performing a partial link | |
2377 | do not bother getting a bfd to hold the glue. */ | |
1049f94e | 2378 | if (info->relocatable) |
b34976b6 | 2379 | return TRUE; |
8afb0e02 | 2380 | |
b7693d02 DJ |
2381 | /* Make sure we don't attach the glue sections to a dynamic object. */ |
2382 | BFD_ASSERT (!(abfd->flags & DYNAMIC)); | |
2383 | ||
8afb0e02 NC |
2384 | globals = elf32_arm_hash_table (info); |
2385 | ||
2386 | BFD_ASSERT (globals != NULL); | |
2387 | ||
2388 | if (globals->bfd_of_glue_owner != NULL) | |
b34976b6 | 2389 | return TRUE; |
8afb0e02 | 2390 | |
252b5132 RH |
2391 | /* Save the bfd for later use. */ |
2392 | globals->bfd_of_glue_owner = abfd; | |
cedb70c5 | 2393 | |
b34976b6 | 2394 | return TRUE; |
252b5132 RH |
2395 | } |
2396 | ||
39b41c9c PB |
2397 | static void check_use_blx(struct elf32_arm_link_hash_table *globals) |
2398 | { | |
2399 | if (elf32_arm_get_eabi_attr_int (globals->obfd, Tag_CPU_arch) > 2) | |
2400 | globals->use_blx = 1; | |
2401 | } | |
2402 | ||
b34976b6 | 2403 | bfd_boolean |
57e8b36a NC |
2404 | bfd_elf32_arm_process_before_allocation (bfd *abfd, |
2405 | struct bfd_link_info *link_info, | |
eb043451 | 2406 | int byteswap_code) |
252b5132 RH |
2407 | { |
2408 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 2409 | Elf_Internal_Rela *internal_relocs = NULL; |
252b5132 RH |
2410 | Elf_Internal_Rela *irel, *irelend; |
2411 | bfd_byte *contents = NULL; | |
252b5132 RH |
2412 | |
2413 | asection *sec; | |
2414 | struct elf32_arm_link_hash_table *globals; | |
2415 | ||
2416 | /* If we are only performing a partial link do not bother | |
2417 | to construct any glue. */ | |
1049f94e | 2418 | if (link_info->relocatable) |
b34976b6 | 2419 | return TRUE; |
252b5132 RH |
2420 | |
2421 | /* Here we have a bfd that is to be included on the link. We have a hook | |
2422 | to do reloc rummaging, before section sizes are nailed down. */ | |
252b5132 | 2423 | globals = elf32_arm_hash_table (link_info); |
39b41c9c | 2424 | check_use_blx (globals); |
252b5132 RH |
2425 | |
2426 | BFD_ASSERT (globals != NULL); | |
2427 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
2428 | ||
e489d0ae PB |
2429 | if (byteswap_code && !bfd_big_endian (abfd)) |
2430 | { | |
d003868e AM |
2431 | _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."), |
2432 | abfd); | |
e489d0ae PB |
2433 | return FALSE; |
2434 | } | |
2435 | globals->byteswap_code = byteswap_code; | |
f21f3fe0 | 2436 | |
252b5132 RH |
2437 | /* Rummage around all the relocs and map the glue vectors. */ |
2438 | sec = abfd->sections; | |
2439 | ||
2440 | if (sec == NULL) | |
b34976b6 | 2441 | return TRUE; |
252b5132 RH |
2442 | |
2443 | for (; sec != NULL; sec = sec->next) | |
2444 | { | |
2445 | if (sec->reloc_count == 0) | |
2446 | continue; | |
2447 | ||
2448 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
252b5132 | 2449 | |
9b485d32 | 2450 | /* Load the relocs. */ |
6cdc0ccc | 2451 | internal_relocs |
57e8b36a | 2452 | = _bfd_elf_link_read_relocs (abfd, sec, (void *) NULL, |
45d6a902 | 2453 | (Elf_Internal_Rela *) NULL, FALSE); |
252b5132 | 2454 | |
6cdc0ccc AM |
2455 | if (internal_relocs == NULL) |
2456 | goto error_return; | |
252b5132 | 2457 | |
6cdc0ccc AM |
2458 | irelend = internal_relocs + sec->reloc_count; |
2459 | for (irel = internal_relocs; irel < irelend; irel++) | |
252b5132 RH |
2460 | { |
2461 | long r_type; | |
2462 | unsigned long r_index; | |
252b5132 RH |
2463 | |
2464 | struct elf_link_hash_entry *h; | |
2465 | ||
2466 | r_type = ELF32_R_TYPE (irel->r_info); | |
2467 | r_index = ELF32_R_SYM (irel->r_info); | |
2468 | ||
9b485d32 | 2469 | /* These are the only relocation types we care about. */ |
ba96a88f | 2470 | if ( r_type != R_ARM_PC24 |
b7693d02 | 2471 | && r_type != R_ARM_PLT32 |
5b5bb741 PB |
2472 | && r_type != R_ARM_CALL |
2473 | && r_type != R_ARM_JUMP24 | |
c19d1205 | 2474 | && r_type != R_ARM_THM_CALL) |
252b5132 RH |
2475 | continue; |
2476 | ||
2477 | /* Get the section contents if we haven't done so already. */ | |
2478 | if (contents == NULL) | |
2479 | { | |
2480 | /* Get cached copy if it exists. */ | |
2481 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
2482 | contents = elf_section_data (sec)->this_hdr.contents; | |
2483 | else | |
2484 | { | |
2485 | /* Go get them off disk. */ | |
57e8b36a | 2486 | if (! bfd_malloc_and_get_section (abfd, sec, &contents)) |
252b5132 RH |
2487 | goto error_return; |
2488 | } | |
2489 | } | |
2490 | ||
a7c10850 | 2491 | /* If the relocation is not against a symbol it cannot concern us. */ |
252b5132 RH |
2492 | h = NULL; |
2493 | ||
9b485d32 | 2494 | /* We don't care about local symbols. */ |
252b5132 RH |
2495 | if (r_index < symtab_hdr->sh_info) |
2496 | continue; | |
2497 | ||
9b485d32 | 2498 | /* This is an external symbol. */ |
252b5132 RH |
2499 | r_index -= symtab_hdr->sh_info; |
2500 | h = (struct elf_link_hash_entry *) | |
2501 | elf_sym_hashes (abfd)[r_index]; | |
2502 | ||
2503 | /* If the relocation is against a static symbol it must be within | |
2504 | the current section and so cannot be a cross ARM/Thumb relocation. */ | |
2505 | if (h == NULL) | |
2506 | continue; | |
2507 | ||
b7693d02 DJ |
2508 | /* If the call will go through a PLT entry then we do not need |
2509 | glue. */ | |
2510 | if (globals->splt != NULL && h->plt.offset != (bfd_vma) -1) | |
2511 | continue; | |
2512 | ||
252b5132 RH |
2513 | switch (r_type) |
2514 | { | |
2515 | case R_ARM_PC24: | |
c6596c5e | 2516 | case R_ARM_PLT32: |
5b5bb741 PB |
2517 | case R_ARM_CALL: |
2518 | case R_ARM_JUMP24: | |
252b5132 | 2519 | /* This one is a call from arm code. We need to look up |
2f0ca46a | 2520 | the target of the call. If it is a thumb target, we |
252b5132 | 2521 | insert glue. */ |
39b41c9c PB |
2522 | if (ELF_ST_TYPE(h->type) == STT_ARM_TFUNC |
2523 | && !(r_type == R_ARM_CALL && globals->use_blx)) | |
252b5132 RH |
2524 | record_arm_to_thumb_glue (link_info, h); |
2525 | break; | |
2526 | ||
c19d1205 | 2527 | case R_ARM_THM_CALL: |
f21f3fe0 | 2528 | /* This one is a call from thumb code. We look |
2f0ca46a | 2529 | up the target of the call. If it is not a thumb |
bcbdc74c | 2530 | target, we insert glue. */ |
39b41c9c | 2531 | if (ELF_ST_TYPE (h->type) != STT_ARM_TFUNC && !globals->use_blx) |
252b5132 RH |
2532 | record_thumb_to_arm_glue (link_info, h); |
2533 | break; | |
2534 | ||
2535 | default: | |
c6596c5e | 2536 | abort (); |
252b5132 RH |
2537 | } |
2538 | } | |
6cdc0ccc AM |
2539 | |
2540 | if (contents != NULL | |
2541 | && elf_section_data (sec)->this_hdr.contents != contents) | |
2542 | free (contents); | |
2543 | contents = NULL; | |
2544 | ||
2545 | if (internal_relocs != NULL | |
2546 | && elf_section_data (sec)->relocs != internal_relocs) | |
2547 | free (internal_relocs); | |
2548 | internal_relocs = NULL; | |
252b5132 RH |
2549 | } |
2550 | ||
b34976b6 | 2551 | return TRUE; |
9a5aca8c | 2552 | |
252b5132 | 2553 | error_return: |
6cdc0ccc AM |
2554 | if (contents != NULL |
2555 | && elf_section_data (sec)->this_hdr.contents != contents) | |
2556 | free (contents); | |
2557 | if (internal_relocs != NULL | |
2558 | && elf_section_data (sec)->relocs != internal_relocs) | |
2559 | free (internal_relocs); | |
9a5aca8c | 2560 | |
b34976b6 | 2561 | return FALSE; |
252b5132 | 2562 | } |
7e392df6 | 2563 | #endif |
252b5132 | 2564 | |
eb043451 | 2565 | |
eb043451 PB |
2566 | /* Set target relocation values needed during linking. */ |
2567 | ||
2568 | void | |
2569 | bfd_elf32_arm_set_target_relocs (struct bfd_link_info *link_info, | |
2570 | int target1_is_rel, | |
319850b4 | 2571 | char * target2_type, |
33bfe774 JB |
2572 | int fix_v4bx, |
2573 | int use_blx) | |
eb043451 PB |
2574 | { |
2575 | struct elf32_arm_link_hash_table *globals; | |
2576 | ||
2577 | globals = elf32_arm_hash_table (link_info); | |
2578 | ||
2579 | globals->target1_is_rel = target1_is_rel; | |
2580 | if (strcmp (target2_type, "rel") == 0) | |
2581 | globals->target2_reloc = R_ARM_REL32; | |
eeac373a PB |
2582 | else if (strcmp (target2_type, "abs") == 0) |
2583 | globals->target2_reloc = R_ARM_ABS32; | |
eb043451 PB |
2584 | else if (strcmp (target2_type, "got-rel") == 0) |
2585 | globals->target2_reloc = R_ARM_GOT_PREL; | |
2586 | else | |
2587 | { | |
2588 | _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."), | |
2589 | target2_type); | |
2590 | } | |
319850b4 | 2591 | globals->fix_v4bx = fix_v4bx; |
33bfe774 | 2592 | globals->use_blx |= use_blx; |
eb043451 | 2593 | } |
eb043451 | 2594 | |
252b5132 RH |
2595 | /* The thumb form of a long branch is a bit finicky, because the offset |
2596 | encoding is split over two fields, each in it's own instruction. They | |
f21f3fe0 | 2597 | can occur in any order. So given a thumb form of long branch, and an |
252b5132 | 2598 | offset, insert the offset into the thumb branch and return finished |
f21f3fe0 | 2599 | instruction. |
252b5132 | 2600 | |
f21f3fe0 | 2601 | It takes two thumb instructions to encode the target address. Each has |
4cc11e76 | 2602 | 11 bits to invest. The upper 11 bits are stored in one (identified by |
f21f3fe0 UD |
2603 | H-0.. see below), the lower 11 bits are stored in the other (identified |
2604 | by H-1). | |
252b5132 | 2605 | |
f21f3fe0 | 2606 | Combine together and shifted left by 1 (it's a half word address) and |
252b5132 RH |
2607 | there you have it. |
2608 | ||
2609 | Op: 1111 = F, | |
2610 | H-0, upper address-0 = 000 | |
2611 | Op: 1111 = F, | |
2612 | H-1, lower address-0 = 800 | |
2613 | ||
f21f3fe0 | 2614 | They can be ordered either way, but the arm tools I've seen always put |
252b5132 RH |
2615 | the lower one first. It probably doesn't matter. krk@cygnus.com |
2616 | ||
2617 | XXX: Actually the order does matter. The second instruction (H-1) | |
2618 | moves the computed address into the PC, so it must be the second one | |
2619 | in the sequence. The problem, however is that whilst little endian code | |
2620 | stores the instructions in HI then LOW order, big endian code does the | |
dfc5f959 | 2621 | reverse. nickc@cygnus.com. */ |
252b5132 | 2622 | |
dfc5f959 NC |
2623 | #define LOW_HI_ORDER 0xF800F000 |
2624 | #define HI_LOW_ORDER 0xF000F800 | |
252b5132 RH |
2625 | |
2626 | static insn32 | |
57e8b36a | 2627 | insert_thumb_branch (insn32 br_insn, int rel_off) |
252b5132 RH |
2628 | { |
2629 | unsigned int low_bits; | |
2630 | unsigned int high_bits; | |
2631 | ||
252b5132 RH |
2632 | BFD_ASSERT ((rel_off & 1) != 1); |
2633 | ||
dfc5f959 NC |
2634 | rel_off >>= 1; /* Half word aligned address. */ |
2635 | low_bits = rel_off & 0x000007FF; /* The bottom 11 bits. */ | |
2636 | high_bits = (rel_off >> 11) & 0x000007FF; /* The top 11 bits. */ | |
252b5132 RH |
2637 | |
2638 | if ((br_insn & LOW_HI_ORDER) == LOW_HI_ORDER) | |
2639 | br_insn = LOW_HI_ORDER | (low_bits << 16) | high_bits; | |
2640 | else if ((br_insn & HI_LOW_ORDER) == HI_LOW_ORDER) | |
2641 | br_insn = HI_LOW_ORDER | (high_bits << 16) | low_bits; | |
2642 | else | |
9b485d32 | 2643 | /* FIXME: abort is probably not the right call. krk@cygnus.com */ |
57e8b36a | 2644 | abort (); /* Error - not a valid branch instruction form. */ |
252b5132 | 2645 | |
252b5132 RH |
2646 | return br_insn; |
2647 | } | |
2648 | ||
9b485d32 NC |
2649 | /* Thumb code calling an ARM function. */ |
2650 | ||
252b5132 | 2651 | static int |
57e8b36a NC |
2652 | elf32_thumb_to_arm_stub (struct bfd_link_info * info, |
2653 | const char * name, | |
2654 | bfd * input_bfd, | |
2655 | bfd * output_bfd, | |
2656 | asection * input_section, | |
2657 | bfd_byte * hit_data, | |
2658 | asection * sym_sec, | |
2659 | bfd_vma offset, | |
2660 | bfd_signed_vma addend, | |
2661 | bfd_vma val) | |
252b5132 | 2662 | { |
bcbdc74c | 2663 | asection * s = 0; |
dc810e39 | 2664 | bfd_vma my_offset; |
252b5132 RH |
2665 | unsigned long int tmp; |
2666 | long int ret_offset; | |
bcbdc74c NC |
2667 | struct elf_link_hash_entry * myh; |
2668 | struct elf32_arm_link_hash_table * globals; | |
252b5132 RH |
2669 | |
2670 | myh = find_thumb_glue (info, name, input_bfd); | |
2671 | if (myh == NULL) | |
b34976b6 | 2672 | return FALSE; |
252b5132 RH |
2673 | |
2674 | globals = elf32_arm_hash_table (info); | |
2675 | ||
2676 | BFD_ASSERT (globals != NULL); | |
2677 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
2678 | ||
2679 | my_offset = myh->root.u.def.value; | |
2680 | ||
2681 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
2682 | THUMB2ARM_GLUE_SECTION_NAME); | |
2683 | ||
2684 | BFD_ASSERT (s != NULL); | |
2685 | BFD_ASSERT (s->contents != NULL); | |
2686 | BFD_ASSERT (s->output_section != NULL); | |
2687 | ||
2688 | if ((my_offset & 0x01) == 0x01) | |
2689 | { | |
2690 | if (sym_sec != NULL | |
2691 | && sym_sec->owner != NULL | |
2692 | && !INTERWORK_FLAG (sym_sec->owner)) | |
2693 | { | |
8f615d07 | 2694 | (*_bfd_error_handler) |
d003868e AM |
2695 | (_("%B(%s): warning: interworking not enabled.\n" |
2696 | " first occurrence: %B: thumb call to arm"), | |
2697 | sym_sec->owner, input_bfd, name); | |
252b5132 | 2698 | |
b34976b6 | 2699 | return FALSE; |
252b5132 RH |
2700 | } |
2701 | ||
2702 | --my_offset; | |
2703 | myh->root.u.def.value = my_offset; | |
2704 | ||
dc810e39 | 2705 | bfd_put_16 (output_bfd, (bfd_vma) t2a1_bx_pc_insn, |
252b5132 RH |
2706 | s->contents + my_offset); |
2707 | ||
dc810e39 | 2708 | bfd_put_16 (output_bfd, (bfd_vma) t2a2_noop_insn, |
252b5132 RH |
2709 | s->contents + my_offset + 2); |
2710 | ||
2711 | ret_offset = | |
9b485d32 NC |
2712 | /* Address of destination of the stub. */ |
2713 | ((bfd_signed_vma) val) | |
252b5132 | 2714 | - ((bfd_signed_vma) |
57e8b36a NC |
2715 | /* Offset from the start of the current section |
2716 | to the start of the stubs. */ | |
9b485d32 NC |
2717 | (s->output_offset |
2718 | /* Offset of the start of this stub from the start of the stubs. */ | |
2719 | + my_offset | |
2720 | /* Address of the start of the current section. */ | |
2721 | + s->output_section->vma) | |
2722 | /* The branch instruction is 4 bytes into the stub. */ | |
2723 | + 4 | |
2724 | /* ARM branches work from the pc of the instruction + 8. */ | |
2725 | + 8); | |
252b5132 RH |
2726 | |
2727 | bfd_put_32 (output_bfd, | |
dc810e39 | 2728 | (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF), |
252b5132 RH |
2729 | s->contents + my_offset + 4); |
2730 | } | |
2731 | ||
2732 | BFD_ASSERT (my_offset <= globals->thumb_glue_size); | |
2733 | ||
427bfd90 NC |
2734 | /* Now go back and fix up the original BL insn to point to here. */ |
2735 | ret_offset = | |
2736 | /* Address of where the stub is located. */ | |
2737 | (s->output_section->vma + s->output_offset + my_offset) | |
2738 | /* Address of where the BL is located. */ | |
57e8b36a NC |
2739 | - (input_section->output_section->vma + input_section->output_offset |
2740 | + offset) | |
427bfd90 NC |
2741 | /* Addend in the relocation. */ |
2742 | - addend | |
2743 | /* Biassing for PC-relative addressing. */ | |
2744 | - 8; | |
252b5132 RH |
2745 | |
2746 | tmp = bfd_get_32 (input_bfd, hit_data | |
2747 | - input_section->vma); | |
2748 | ||
2749 | bfd_put_32 (output_bfd, | |
dc810e39 | 2750 | (bfd_vma) insert_thumb_branch (tmp, ret_offset), |
252b5132 RH |
2751 | hit_data - input_section->vma); |
2752 | ||
b34976b6 | 2753 | return TRUE; |
252b5132 RH |
2754 | } |
2755 | ||
9b485d32 NC |
2756 | /* Arm code calling a Thumb function. */ |
2757 | ||
252b5132 | 2758 | static int |
57e8b36a NC |
2759 | elf32_arm_to_thumb_stub (struct bfd_link_info * info, |
2760 | const char * name, | |
2761 | bfd * input_bfd, | |
2762 | bfd * output_bfd, | |
2763 | asection * input_section, | |
2764 | bfd_byte * hit_data, | |
2765 | asection * sym_sec, | |
2766 | bfd_vma offset, | |
2767 | bfd_signed_vma addend, | |
2768 | bfd_vma val) | |
252b5132 RH |
2769 | { |
2770 | unsigned long int tmp; | |
dc810e39 | 2771 | bfd_vma my_offset; |
bcbdc74c | 2772 | asection * s; |
252b5132 | 2773 | long int ret_offset; |
bcbdc74c NC |
2774 | struct elf_link_hash_entry * myh; |
2775 | struct elf32_arm_link_hash_table * globals; | |
252b5132 RH |
2776 | |
2777 | myh = find_arm_glue (info, name, input_bfd); | |
2778 | if (myh == NULL) | |
b34976b6 | 2779 | return FALSE; |
252b5132 RH |
2780 | |
2781 | globals = elf32_arm_hash_table (info); | |
2782 | ||
2783 | BFD_ASSERT (globals != NULL); | |
2784 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
2785 | ||
2786 | my_offset = myh->root.u.def.value; | |
2787 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
2788 | ARM2THUMB_GLUE_SECTION_NAME); | |
2789 | BFD_ASSERT (s != NULL); | |
2790 | BFD_ASSERT (s->contents != NULL); | |
2791 | BFD_ASSERT (s->output_section != NULL); | |
2792 | ||
2793 | if ((my_offset & 0x01) == 0x01) | |
2794 | { | |
2795 | if (sym_sec != NULL | |
2796 | && sym_sec->owner != NULL | |
2797 | && !INTERWORK_FLAG (sym_sec->owner)) | |
2798 | { | |
8f615d07 | 2799 | (*_bfd_error_handler) |
d003868e AM |
2800 | (_("%B(%s): warning: interworking not enabled.\n" |
2801 | " first occurrence: %B: arm call to thumb"), | |
2802 | sym_sec->owner, input_bfd, name); | |
252b5132 | 2803 | } |
9b485d32 | 2804 | |
252b5132 RH |
2805 | --my_offset; |
2806 | myh->root.u.def.value = my_offset; | |
2807 | ||
8f6277f5 PB |
2808 | if ((info->shared || globals->root.is_relocatable_executable)) |
2809 | { | |
2810 | /* For relocatable objects we can't use absolute addresses, | |
2811 | so construct the address from a relative offset. */ | |
2812 | /* TODO: If the offset is small it's probably worth | |
2813 | constructing the address with adds. */ | |
2814 | bfd_put_32 (output_bfd, (bfd_vma) a2t1p_ldr_insn, | |
2815 | s->contents + my_offset); | |
2816 | bfd_put_32 (output_bfd, (bfd_vma) a2t2p_add_pc_insn, | |
2817 | s->contents + my_offset + 4); | |
2818 | bfd_put_32 (output_bfd, (bfd_vma) a2t3p_bx_r12_insn, | |
2819 | s->contents + my_offset + 8); | |
2820 | /* Adjust the offset by 4 for the position of the add, | |
2821 | and 8 for the pipeline offset. */ | |
2822 | ret_offset = (val - (s->output_offset | |
2823 | + s->output_section->vma | |
2824 | + my_offset + 12)) | |
2825 | | 1; | |
2826 | bfd_put_32 (output_bfd, ret_offset, | |
2827 | s->contents + my_offset + 12); | |
2828 | } | |
2829 | else | |
2830 | { | |
2831 | bfd_put_32 (output_bfd, (bfd_vma) a2t1_ldr_insn, | |
2832 | s->contents + my_offset); | |
252b5132 | 2833 | |
8f6277f5 PB |
2834 | bfd_put_32 (output_bfd, (bfd_vma) a2t2_bx_r12_insn, |
2835 | s->contents + my_offset + 4); | |
252b5132 | 2836 | |
8f6277f5 PB |
2837 | /* It's a thumb address. Add the low order bit. */ |
2838 | bfd_put_32 (output_bfd, val | a2t3_func_addr_insn, | |
2839 | s->contents + my_offset + 8); | |
2840 | } | |
252b5132 RH |
2841 | } |
2842 | ||
2843 | BFD_ASSERT (my_offset <= globals->arm_glue_size); | |
2844 | ||
2845 | tmp = bfd_get_32 (input_bfd, hit_data); | |
2846 | tmp = tmp & 0xFF000000; | |
2847 | ||
9b485d32 | 2848 | /* Somehow these are both 4 too far, so subtract 8. */ |
dc810e39 AM |
2849 | ret_offset = (s->output_offset |
2850 | + my_offset | |
2851 | + s->output_section->vma | |
2852 | - (input_section->output_offset | |
2853 | + input_section->output_section->vma | |
2854 | + offset + addend) | |
2855 | - 8); | |
9a5aca8c | 2856 | |
252b5132 RH |
2857 | tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF); |
2858 | ||
dc810e39 | 2859 | bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma); |
252b5132 | 2860 | |
b34976b6 | 2861 | return TRUE; |
252b5132 RH |
2862 | } |
2863 | ||
eb043451 PB |
2864 | /* Some relocations map to different relocations depending on the |
2865 | target. Return the real relocation. */ | |
2866 | static int | |
2867 | arm_real_reloc_type (struct elf32_arm_link_hash_table * globals, | |
2868 | int r_type) | |
2869 | { | |
2870 | switch (r_type) | |
2871 | { | |
2872 | case R_ARM_TARGET1: | |
2873 | if (globals->target1_is_rel) | |
2874 | return R_ARM_REL32; | |
2875 | else | |
2876 | return R_ARM_ABS32; | |
2877 | ||
2878 | case R_ARM_TARGET2: | |
2879 | return globals->target2_reloc; | |
2880 | ||
2881 | default: | |
2882 | return r_type; | |
2883 | } | |
2884 | } | |
eb043451 | 2885 | |
ba93b8ac DJ |
2886 | /* Return the base VMA address which should be subtracted from real addresses |
2887 | when resolving @dtpoff relocation. | |
2888 | This is PT_TLS segment p_vaddr. */ | |
2889 | ||
2890 | static bfd_vma | |
2891 | dtpoff_base (struct bfd_link_info *info) | |
2892 | { | |
2893 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
2894 | if (elf_hash_table (info)->tls_sec == NULL) | |
2895 | return 0; | |
2896 | return elf_hash_table (info)->tls_sec->vma; | |
2897 | } | |
2898 | ||
2899 | /* Return the relocation value for @tpoff relocation | |
2900 | if STT_TLS virtual address is ADDRESS. */ | |
2901 | ||
2902 | static bfd_vma | |
2903 | tpoff (struct bfd_link_info *info, bfd_vma address) | |
2904 | { | |
2905 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
2906 | bfd_vma base; | |
2907 | ||
2908 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
2909 | if (htab->tls_sec == NULL) | |
2910 | return 0; | |
2911 | base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power); | |
2912 | return address - htab->tls_sec->vma + base; | |
2913 | } | |
2914 | ||
00a97672 RS |
2915 | /* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA. |
2916 | VALUE is the relocation value. */ | |
2917 | ||
2918 | static bfd_reloc_status_type | |
2919 | elf32_arm_abs12_reloc (bfd *abfd, void *data, bfd_vma value) | |
2920 | { | |
2921 | if (value > 0xfff) | |
2922 | return bfd_reloc_overflow; | |
2923 | ||
2924 | value |= bfd_get_32 (abfd, data) & 0xfffff000; | |
2925 | bfd_put_32 (abfd, value, data); | |
2926 | return bfd_reloc_ok; | |
2927 | } | |
2928 | ||
252b5132 | 2929 | /* Perform a relocation as part of a final link. */ |
9b485d32 | 2930 | |
252b5132 | 2931 | static bfd_reloc_status_type |
57e8b36a NC |
2932 | elf32_arm_final_link_relocate (reloc_howto_type * howto, |
2933 | bfd * input_bfd, | |
2934 | bfd * output_bfd, | |
2935 | asection * input_section, | |
2936 | bfd_byte * contents, | |
2937 | Elf_Internal_Rela * rel, | |
2938 | bfd_vma value, | |
2939 | struct bfd_link_info * info, | |
2940 | asection * sym_sec, | |
2941 | const char * sym_name, | |
2942 | int sym_flags, | |
0945cdfd DJ |
2943 | struct elf_link_hash_entry * h, |
2944 | bfd_boolean * unresolved_reloc_p) | |
252b5132 RH |
2945 | { |
2946 | unsigned long r_type = howto->type; | |
2947 | unsigned long r_symndx; | |
2948 | bfd_byte * hit_data = contents + rel->r_offset; | |
2949 | bfd * dynobj = NULL; | |
2950 | Elf_Internal_Shdr * symtab_hdr; | |
2951 | struct elf_link_hash_entry ** sym_hashes; | |
2952 | bfd_vma * local_got_offsets; | |
2953 | asection * sgot = NULL; | |
2954 | asection * splt = NULL; | |
2955 | asection * sreloc = NULL; | |
252b5132 | 2956 | bfd_vma addend; |
ba96a88f NC |
2957 | bfd_signed_vma signed_addend; |
2958 | struct elf32_arm_link_hash_table * globals; | |
f21f3fe0 | 2959 | |
9c504268 PB |
2960 | globals = elf32_arm_hash_table (info); |
2961 | ||
9c504268 PB |
2962 | /* Some relocation type map to different relocations depending on the |
2963 | target. We pick the right one here. */ | |
eb043451 PB |
2964 | r_type = arm_real_reloc_type (globals, r_type); |
2965 | if (r_type != howto->type) | |
2966 | howto = elf32_arm_howto_from_type (r_type); | |
9c504268 | 2967 | |
cac15327 NC |
2968 | /* If the start address has been set, then set the EF_ARM_HASENTRY |
2969 | flag. Setting this more than once is redundant, but the cost is | |
2970 | not too high, and it keeps the code simple. | |
99e4ae17 | 2971 | |
cac15327 NC |
2972 | The test is done here, rather than somewhere else, because the |
2973 | start address is only set just before the final link commences. | |
2974 | ||
2975 | Note - if the user deliberately sets a start address of 0, the | |
2976 | flag will not be set. */ | |
2977 | if (bfd_get_start_address (output_bfd) != 0) | |
2978 | elf_elfheader (output_bfd)->e_flags |= EF_ARM_HASENTRY; | |
99e4ae17 | 2979 | |
252b5132 RH |
2980 | dynobj = elf_hash_table (info)->dynobj; |
2981 | if (dynobj) | |
2982 | { | |
2983 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
2984 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
2985 | } | |
2986 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; | |
2987 | sym_hashes = elf_sym_hashes (input_bfd); | |
2988 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
2989 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2990 | ||
4e7fd91e | 2991 | if (globals->use_rel) |
ba96a88f | 2992 | { |
4e7fd91e PB |
2993 | addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask; |
2994 | ||
2995 | if (addend & ((howto->src_mask + 1) >> 1)) | |
2996 | { | |
2997 | signed_addend = -1; | |
2998 | signed_addend &= ~ howto->src_mask; | |
2999 | signed_addend |= addend; | |
3000 | } | |
3001 | else | |
3002 | signed_addend = addend; | |
ba96a88f NC |
3003 | } |
3004 | else | |
4e7fd91e | 3005 | addend = signed_addend = rel->r_addend; |
f21f3fe0 | 3006 | |
252b5132 RH |
3007 | switch (r_type) |
3008 | { | |
3009 | case R_ARM_NONE: | |
28a094c2 DJ |
3010 | /* We don't need to find a value for this symbol. It's just a |
3011 | marker. */ | |
3012 | *unresolved_reloc_p = FALSE; | |
252b5132 RH |
3013 | return bfd_reloc_ok; |
3014 | ||
00a97672 RS |
3015 | case R_ARM_ABS12: |
3016 | if (!globals->vxworks_p) | |
3017 | return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend); | |
3018 | ||
252b5132 RH |
3019 | case R_ARM_PC24: |
3020 | case R_ARM_ABS32: | |
3021 | case R_ARM_REL32: | |
5b5bb741 PB |
3022 | case R_ARM_CALL: |
3023 | case R_ARM_JUMP24: | |
dfc5f959 | 3024 | case R_ARM_XPC25: |
eb043451 | 3025 | case R_ARM_PREL31: |
7359ea65 | 3026 | case R_ARM_PLT32: |
5e681ec4 PB |
3027 | /* r_symndx will be zero only for relocs against symbols |
3028 | from removed linkonce sections, or sections discarded by | |
3029 | a linker script. */ | |
3030 | if (r_symndx == 0) | |
3031 | return bfd_reloc_ok; | |
3032 | ||
7359ea65 DJ |
3033 | /* Handle relocations which should use the PLT entry. ABS32/REL32 |
3034 | will use the symbol's value, which may point to a PLT entry, but we | |
3035 | don't need to handle that here. If we created a PLT entry, all | |
3036 | branches in this object should go to it. */ | |
ee06dc07 | 3037 | if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32) |
7359ea65 | 3038 | && h != NULL |
c84cd8ee | 3039 | && splt != NULL |
7359ea65 DJ |
3040 | && h->plt.offset != (bfd_vma) -1) |
3041 | { | |
c84cd8ee DJ |
3042 | /* If we've created a .plt section, and assigned a PLT entry to |
3043 | this function, it should not be known to bind locally. If | |
3044 | it were, we would have cleared the PLT entry. */ | |
7359ea65 DJ |
3045 | BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info, h)); |
3046 | ||
3047 | value = (splt->output_section->vma | |
3048 | + splt->output_offset | |
3049 | + h->plt.offset); | |
0945cdfd | 3050 | *unresolved_reloc_p = FALSE; |
7359ea65 DJ |
3051 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
3052 | contents, rel->r_offset, value, | |
00a97672 | 3053 | rel->r_addend); |
7359ea65 DJ |
3054 | } |
3055 | ||
67687978 PB |
3056 | /* When generating a shared object or relocatable executable, these |
3057 | relocations are copied into the output file to be resolved at | |
3058 | run time. */ | |
3059 | if ((info->shared || globals->root.is_relocatable_executable) | |
7359ea65 | 3060 | && (input_section->flags & SEC_ALLOC) |
ee06dc07 PB |
3061 | && (r_type != R_ARM_REL32 |
3062 | || !SYMBOL_CALLS_LOCAL (info, h)) | |
7359ea65 DJ |
3063 | && (h == NULL |
3064 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
3065 | || h->root.type != bfd_link_hash_undefweak) | |
3066 | && r_type != R_ARM_PC24 | |
5b5bb741 PB |
3067 | && r_type != R_ARM_CALL |
3068 | && r_type != R_ARM_JUMP24 | |
ee06dc07 | 3069 | && r_type != R_ARM_PREL31 |
7359ea65 | 3070 | && r_type != R_ARM_PLT32) |
252b5132 | 3071 | { |
947216bf AM |
3072 | Elf_Internal_Rela outrel; |
3073 | bfd_byte *loc; | |
b34976b6 | 3074 | bfd_boolean skip, relocate; |
f21f3fe0 | 3075 | |
0945cdfd DJ |
3076 | *unresolved_reloc_p = FALSE; |
3077 | ||
252b5132 RH |
3078 | if (sreloc == NULL) |
3079 | { | |
3080 | const char * name; | |
f21f3fe0 | 3081 | |
252b5132 RH |
3082 | name = (bfd_elf_string_from_elf_section |
3083 | (input_bfd, | |
3084 | elf_elfheader (input_bfd)->e_shstrndx, | |
3085 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
3086 | if (name == NULL) | |
3087 | return bfd_reloc_notsupported; | |
f21f3fe0 | 3088 | |
00a97672 | 3089 | BFD_ASSERT (reloc_section_p (globals, name, input_section)); |
f21f3fe0 | 3090 | |
252b5132 RH |
3091 | sreloc = bfd_get_section_by_name (dynobj, name); |
3092 | BFD_ASSERT (sreloc != NULL); | |
3093 | } | |
f21f3fe0 | 3094 | |
b34976b6 AM |
3095 | skip = FALSE; |
3096 | relocate = FALSE; | |
f21f3fe0 | 3097 | |
00a97672 | 3098 | outrel.r_addend = addend; |
c629eae0 JJ |
3099 | outrel.r_offset = |
3100 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
3101 | rel->r_offset); | |
3102 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 3103 | skip = TRUE; |
0bb2d96a | 3104 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 3105 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
3106 | outrel.r_offset += (input_section->output_section->vma |
3107 | + input_section->output_offset); | |
f21f3fe0 | 3108 | |
252b5132 | 3109 | if (skip) |
0bb2d96a | 3110 | memset (&outrel, 0, sizeof outrel); |
5e681ec4 PB |
3111 | else if (h != NULL |
3112 | && h->dynindx != -1 | |
7359ea65 | 3113 | && (!info->shared |
5e681ec4 | 3114 | || !info->symbolic |
f5385ebf | 3115 | || !h->def_regular)) |
5e681ec4 | 3116 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
252b5132 RH |
3117 | else |
3118 | { | |
a16385dc MM |
3119 | int symbol; |
3120 | ||
5e681ec4 | 3121 | /* This symbol is local, or marked to become local. */ |
b7693d02 DJ |
3122 | if (sym_flags == STT_ARM_TFUNC) |
3123 | value |= 1; | |
a16385dc | 3124 | if (globals->symbian_p) |
6366ff1e MM |
3125 | { |
3126 | /* On Symbian OS, the data segment and text segement | |
3127 | can be relocated independently. Therefore, we | |
3128 | must indicate the segment to which this | |
3129 | relocation is relative. The BPABI allows us to | |
3130 | use any symbol in the right segment; we just use | |
3131 | the section symbol as it is convenient. (We | |
3132 | cannot use the symbol given by "h" directly as it | |
3133 | will not appear in the dynamic symbol table.) */ | |
10dbd1f3 NC |
3134 | if (sym_sec) |
3135 | symbol = elf_section_data (sym_sec->output_section)->dynindx; | |
3136 | else | |
3137 | symbol = elf_section_data (input_section->output_section)->dynindx; | |
6366ff1e MM |
3138 | BFD_ASSERT (symbol != 0); |
3139 | } | |
a16385dc MM |
3140 | else |
3141 | /* On SVR4-ish systems, the dynamic loader cannot | |
3142 | relocate the text and data segments independently, | |
3143 | so the symbol does not matter. */ | |
3144 | symbol = 0; | |
3145 | outrel.r_info = ELF32_R_INFO (symbol, R_ARM_RELATIVE); | |
00a97672 RS |
3146 | if (globals->use_rel) |
3147 | relocate = TRUE; | |
3148 | else | |
3149 | outrel.r_addend += value; | |
252b5132 | 3150 | } |
f21f3fe0 | 3151 | |
947216bf | 3152 | loc = sreloc->contents; |
00a97672 RS |
3153 | loc += sreloc->reloc_count++ * RELOC_SIZE (globals); |
3154 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
9a5aca8c | 3155 | |
f21f3fe0 | 3156 | /* If this reloc is against an external symbol, we do not want to |
252b5132 | 3157 | fiddle with the addend. Otherwise, we need to include the symbol |
9b485d32 | 3158 | value so that it becomes an addend for the dynamic reloc. */ |
252b5132 RH |
3159 | if (! relocate) |
3160 | return bfd_reloc_ok; | |
9a5aca8c | 3161 | |
f21f3fe0 | 3162 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
252b5132 RH |
3163 | contents, rel->r_offset, value, |
3164 | (bfd_vma) 0); | |
3165 | } | |
3166 | else switch (r_type) | |
3167 | { | |
00a97672 RS |
3168 | case R_ARM_ABS12: |
3169 | return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend); | |
3170 | ||
dfc5f959 | 3171 | case R_ARM_XPC25: /* Arm BLX instruction. */ |
5b5bb741 PB |
3172 | case R_ARM_CALL: |
3173 | case R_ARM_JUMP24: | |
dfc5f959 | 3174 | case R_ARM_PC24: /* Arm B/BL instruction */ |
7359ea65 | 3175 | case R_ARM_PLT32: |
dfc5f959 | 3176 | if (r_type == R_ARM_XPC25) |
252b5132 | 3177 | { |
dfc5f959 NC |
3178 | /* Check for Arm calling Arm function. */ |
3179 | /* FIXME: Should we translate the instruction into a BL | |
3180 | instruction instead ? */ | |
3181 | if (sym_flags != STT_ARM_TFUNC) | |
d003868e AM |
3182 | (*_bfd_error_handler) |
3183 | (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."), | |
3184 | input_bfd, | |
3185 | h ? h->root.root.string : "(local)"); | |
dfc5f959 | 3186 | } |
39b41c9c | 3187 | else if (r_type != R_ARM_CALL || !globals->use_blx) |
dfc5f959 NC |
3188 | { |
3189 | /* Check for Arm calling Thumb function. */ | |
3190 | if (sym_flags == STT_ARM_TFUNC) | |
3191 | { | |
57e8b36a NC |
3192 | elf32_arm_to_thumb_stub (info, sym_name, input_bfd, |
3193 | output_bfd, input_section, | |
3194 | hit_data, sym_sec, rel->r_offset, | |
dfc5f959 NC |
3195 | signed_addend, value); |
3196 | return bfd_reloc_ok; | |
3197 | } | |
252b5132 | 3198 | } |
ba96a88f | 3199 | |
dea514f5 PB |
3200 | /* The ARM ELF ABI says that this reloc is computed as: S - P + A |
3201 | where: | |
3202 | S is the address of the symbol in the relocation. | |
3203 | P is address of the instruction being relocated. | |
3204 | A is the addend (extracted from the instruction) in bytes. | |
3205 | ||
3206 | S is held in 'value'. | |
3207 | P is the base address of the section containing the | |
3208 | instruction plus the offset of the reloc into that | |
3209 | section, ie: | |
3210 | (input_section->output_section->vma + | |
3211 | input_section->output_offset + | |
3212 | rel->r_offset). | |
3213 | A is the addend, converted into bytes, ie: | |
3214 | (signed_addend * 4) | |
3215 | ||
3216 | Note: None of these operations have knowledge of the pipeline | |
3217 | size of the processor, thus it is up to the assembler to | |
3218 | encode this information into the addend. */ | |
3219 | value -= (input_section->output_section->vma | |
3220 | + input_section->output_offset); | |
3221 | value -= rel->r_offset; | |
4e7fd91e PB |
3222 | if (globals->use_rel) |
3223 | value += (signed_addend << howto->size); | |
3224 | else | |
3225 | /* RELA addends do not have to be adjusted by howto->size. */ | |
3226 | value += signed_addend; | |
23080146 | 3227 | |
dcb5e6e6 NC |
3228 | signed_addend = value; |
3229 | signed_addend >>= howto->rightshift; | |
9a5aca8c | 3230 | |
59f2c4e7 NC |
3231 | /* It is not an error for an undefined weak reference to be |
3232 | out of range. Any program that branches to such a symbol | |
9a5aca8c AM |
3233 | is going to crash anyway, so there is no point worrying |
3234 | about getting the destination exactly right. */ | |
59f2c4e7 NC |
3235 | if (! h || h->root.type != bfd_link_hash_undefweak) |
3236 | { | |
9b485d32 | 3237 | /* Perform a signed range check. */ |
dcb5e6e6 | 3238 | if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1)) |
59f2c4e7 NC |
3239 | || signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1))) |
3240 | return bfd_reloc_overflow; | |
3241 | } | |
9a5aca8c | 3242 | |
39b41c9c PB |
3243 | addend = (value & 2); |
3244 | ||
3245 | value = (signed_addend & howto->dst_mask) | |
3246 | | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask)); | |
3247 | ||
3248 | /* Set the H bit in the BLX instruction. */ | |
3249 | if (sym_flags == STT_ARM_TFUNC) | |
3250 | { | |
3251 | if (addend) | |
3252 | value |= (1 << 24); | |
3253 | else | |
3254 | value &= ~(bfd_vma)(1 << 24); | |
3255 | } | |
3256 | if (r_type == R_ARM_CALL) | |
3257 | { | |
3258 | /* Select the correct instruction (BL or BLX). */ | |
3259 | if (sym_flags == STT_ARM_TFUNC) | |
3260 | value |= (1 << 28); | |
3261 | else | |
3262 | { | |
3263 | value &= ~(bfd_vma)(1 << 28); | |
3264 | value |= (1 << 24); | |
3265 | } | |
3266 | } | |
252b5132 | 3267 | break; |
f21f3fe0 | 3268 | |
252b5132 RH |
3269 | case R_ARM_ABS32: |
3270 | value += addend; | |
3271 | if (sym_flags == STT_ARM_TFUNC) | |
3272 | value |= 1; | |
3273 | break; | |
f21f3fe0 | 3274 | |
252b5132 RH |
3275 | case R_ARM_REL32: |
3276 | value -= (input_section->output_section->vma | |
62efb346 | 3277 | + input_section->output_offset + rel->r_offset); |
252b5132 RH |
3278 | value += addend; |
3279 | break; | |
eb043451 | 3280 | |
eb043451 PB |
3281 | case R_ARM_PREL31: |
3282 | value -= (input_section->output_section->vma | |
3283 | + input_section->output_offset + rel->r_offset); | |
3284 | value += signed_addend; | |
3285 | if (! h || h->root.type != bfd_link_hash_undefweak) | |
3286 | { | |
3287 | /* Check for overflow */ | |
3288 | if ((value ^ (value >> 1)) & (1 << 30)) | |
3289 | return bfd_reloc_overflow; | |
3290 | } | |
3291 | value &= 0x7fffffff; | |
3292 | value |= (bfd_get_32 (input_bfd, hit_data) & 0x80000000); | |
3293 | if (sym_flags == STT_ARM_TFUNC) | |
3294 | value |= 1; | |
3295 | break; | |
252b5132 | 3296 | } |
f21f3fe0 | 3297 | |
252b5132 RH |
3298 | bfd_put_32 (input_bfd, value, hit_data); |
3299 | return bfd_reloc_ok; | |
3300 | ||
3301 | case R_ARM_ABS8: | |
3302 | value += addend; | |
3303 | if ((long) value > 0x7f || (long) value < -0x80) | |
3304 | return bfd_reloc_overflow; | |
3305 | ||
3306 | bfd_put_8 (input_bfd, value, hit_data); | |
3307 | return bfd_reloc_ok; | |
3308 | ||
3309 | case R_ARM_ABS16: | |
3310 | value += addend; | |
3311 | ||
3312 | if ((long) value > 0x7fff || (long) value < -0x8000) | |
3313 | return bfd_reloc_overflow; | |
3314 | ||
3315 | bfd_put_16 (input_bfd, value, hit_data); | |
3316 | return bfd_reloc_ok; | |
3317 | ||
252b5132 | 3318 | case R_ARM_THM_ABS5: |
9b485d32 | 3319 | /* Support ldr and str instructions for the thumb. */ |
4e7fd91e PB |
3320 | if (globals->use_rel) |
3321 | { | |
3322 | /* Need to refetch addend. */ | |
3323 | addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask; | |
3324 | /* ??? Need to determine shift amount from operand size. */ | |
3325 | addend >>= howto->rightshift; | |
3326 | } | |
252b5132 RH |
3327 | value += addend; |
3328 | ||
3329 | /* ??? Isn't value unsigned? */ | |
3330 | if ((long) value > 0x1f || (long) value < -0x10) | |
3331 | return bfd_reloc_overflow; | |
3332 | ||
3333 | /* ??? Value needs to be properly shifted into place first. */ | |
3334 | value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f; | |
3335 | bfd_put_16 (input_bfd, value, hit_data); | |
3336 | return bfd_reloc_ok; | |
3337 | ||
dfc5f959 | 3338 | case R_ARM_THM_XPC22: |
c19d1205 | 3339 | case R_ARM_THM_CALL: |
dfc5f959 | 3340 | /* Thumb BL (branch long instruction). */ |
252b5132 | 3341 | { |
b34976b6 AM |
3342 | bfd_vma relocation; |
3343 | bfd_boolean overflow = FALSE; | |
3344 | bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); | |
3345 | bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); | |
df212a7e | 3346 | bfd_signed_vma reloc_signed_max = ((1 << (howto->bitsize - 1)) - 1) >> howto->rightshift; |
ba96a88f | 3347 | bfd_signed_vma reloc_signed_min = ~ reloc_signed_max; |
b34976b6 | 3348 | bfd_vma check; |
252b5132 | 3349 | bfd_signed_vma signed_check; |
252b5132 | 3350 | |
252b5132 RH |
3351 | /* Need to refetch the addend and squish the two 11 bit pieces |
3352 | together. */ | |
4e7fd91e PB |
3353 | if (globals->use_rel) |
3354 | { | |
3355 | bfd_vma upper = upper_insn & 0x7ff; | |
3356 | bfd_vma lower = lower_insn & 0x7ff; | |
3357 | upper = (upper ^ 0x400) - 0x400; /* Sign extend. */ | |
3358 | addend = (upper << 12) | (lower << 1); | |
3359 | signed_addend = addend; | |
3360 | } | |
cb1afa5c | 3361 | |
dfc5f959 NC |
3362 | if (r_type == R_ARM_THM_XPC22) |
3363 | { | |
3364 | /* Check for Thumb to Thumb call. */ | |
3365 | /* FIXME: Should we translate the instruction into a BL | |
3366 | instruction instead ? */ | |
3367 | if (sym_flags == STT_ARM_TFUNC) | |
d003868e AM |
3368 | (*_bfd_error_handler) |
3369 | (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."), | |
3370 | input_bfd, | |
3371 | h ? h->root.root.string : "(local)"); | |
dfc5f959 NC |
3372 | } |
3373 | else | |
252b5132 | 3374 | { |
dfc5f959 NC |
3375 | /* If it is not a call to Thumb, assume call to Arm. |
3376 | If it is a call relative to a section name, then it is not a | |
b7693d02 DJ |
3377 | function call at all, but rather a long jump. Calls through |
3378 | the PLT do not require stubs. */ | |
3379 | if (sym_flags != STT_ARM_TFUNC && sym_flags != STT_SECTION | |
3380 | && (h == NULL || splt == NULL | |
3381 | || h->plt.offset == (bfd_vma) -1)) | |
dfc5f959 | 3382 | { |
39b41c9c PB |
3383 | if (globals->use_blx) |
3384 | { | |
3385 | /* Convert BL to BLX. */ | |
3386 | lower_insn = (lower_insn & ~0x1000) | 0x0800; | |
3387 | } | |
3388 | else if (elf32_thumb_to_arm_stub | |
dfc5f959 NC |
3389 | (info, sym_name, input_bfd, output_bfd, input_section, |
3390 | hit_data, sym_sec, rel->r_offset, signed_addend, value)) | |
3391 | return bfd_reloc_ok; | |
3392 | else | |
3393 | return bfd_reloc_dangerous; | |
3394 | } | |
39b41c9c PB |
3395 | else if (sym_flags == STT_ARM_TFUNC && globals->use_blx) |
3396 | { | |
3397 | /* Make sure this is a BL. */ | |
3398 | lower_insn |= 0x1800; | |
3399 | } | |
252b5132 | 3400 | } |
f21f3fe0 | 3401 | |
b7693d02 DJ |
3402 | /* Handle calls via the PLT. */ |
3403 | if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1) | |
3404 | { | |
3405 | value = (splt->output_section->vma | |
3406 | + splt->output_offset | |
3407 | + h->plt.offset); | |
33bfe774 JB |
3408 | if (globals->use_blx) |
3409 | { | |
3410 | /* If the Thumb BLX instruction is available, convert the | |
3411 | BL to a BLX instruction to call the ARM-mode PLT entry. */ | |
39b41c9c | 3412 | lower_insn = (lower_insn & ~0x1000) | 0x0800; |
33bfe774 JB |
3413 | } |
3414 | else | |
3415 | /* Target the Thumb stub before the ARM PLT entry. */ | |
3416 | value -= PLT_THUMB_STUB_SIZE; | |
0945cdfd | 3417 | *unresolved_reloc_p = FALSE; |
b7693d02 DJ |
3418 | } |
3419 | ||
ba96a88f | 3420 | relocation = value + signed_addend; |
f21f3fe0 | 3421 | |
252b5132 | 3422 | relocation -= (input_section->output_section->vma |
ba96a88f NC |
3423 | + input_section->output_offset |
3424 | + rel->r_offset); | |
9a5aca8c | 3425 | |
252b5132 RH |
3426 | check = relocation >> howto->rightshift; |
3427 | ||
3428 | /* If this is a signed value, the rightshift just dropped | |
3429 | leading 1 bits (assuming twos complement). */ | |
3430 | if ((bfd_signed_vma) relocation >= 0) | |
3431 | signed_check = check; | |
3432 | else | |
3433 | signed_check = check | ~((bfd_vma) -1 >> howto->rightshift); | |
3434 | ||
252b5132 | 3435 | /* Assumes two's complement. */ |
ba96a88f | 3436 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) |
b34976b6 | 3437 | overflow = TRUE; |
252b5132 | 3438 | |
39b41c9c | 3439 | if ((lower_insn & 0x1800) == 0x0800) |
c62e1cc3 NC |
3440 | /* For a BLX instruction, make sure that the relocation is rounded up |
3441 | to a word boundary. This follows the semantics of the instruction | |
3442 | which specifies that bit 1 of the target address will come from bit | |
3443 | 1 of the base address. */ | |
3444 | relocation = (relocation + 2) & ~ 3; | |
cb1afa5c | 3445 | |
c62e1cc3 NC |
3446 | /* Put RELOCATION back into the insn. */ |
3447 | upper_insn = (upper_insn & ~(bfd_vma) 0x7ff) | ((relocation >> 12) & 0x7ff); | |
3448 | lower_insn = (lower_insn & ~(bfd_vma) 0x7ff) | ((relocation >> 1) & 0x7ff); | |
3449 | ||
252b5132 RH |
3450 | /* Put the relocated value back in the object file: */ |
3451 | bfd_put_16 (input_bfd, upper_insn, hit_data); | |
3452 | bfd_put_16 (input_bfd, lower_insn, hit_data + 2); | |
3453 | ||
3454 | return (overflow ? bfd_reloc_overflow : bfd_reloc_ok); | |
3455 | } | |
3456 | break; | |
3457 | ||
c19d1205 ZW |
3458 | case R_ARM_THM_JUMP24: |
3459 | /* Thumb32 unconditional branch instruction. */ | |
3460 | { | |
3461 | bfd_vma relocation; | |
3462 | bfd_boolean overflow = FALSE; | |
3463 | bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); | |
3464 | bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); | |
3465 | bfd_signed_vma reloc_signed_max = ((1 << (howto->bitsize - 1)) - 1) >> howto->rightshift; | |
3466 | bfd_signed_vma reloc_signed_min = ~ reloc_signed_max; | |
3467 | bfd_vma check; | |
3468 | bfd_signed_vma signed_check; | |
3469 | ||
3470 | /* Need to refetch the addend, reconstruct the top three bits, and glue the | |
3471 | two pieces together. */ | |
3472 | if (globals->use_rel) | |
3473 | { | |
3474 | bfd_vma S = (upper_insn & 0x0400) >> 10; | |
3475 | bfd_vma hi = (upper_insn & 0x03ff); | |
3476 | bfd_vma I1 = (lower_insn & 0x2000) >> 13; | |
3477 | bfd_vma I2 = (lower_insn & 0x0800) >> 11; | |
3478 | bfd_vma lo = (lower_insn & 0x07ff); | |
3479 | ||
3480 | I1 = !(I1 ^ S); | |
3481 | I2 = !(I2 ^ S); | |
3482 | S = !S; | |
3483 | ||
3484 | signed_addend = (S << 24) | (I1 << 23) | (I2 << 22) | (hi << 12) | (lo << 1); | |
3485 | signed_addend -= (1 << 24); /* Sign extend. */ | |
3486 | } | |
3487 | ||
3488 | /* ??? Should handle interworking? GCC might someday try to | |
3489 | use this for tail calls. */ | |
3490 | ||
3491 | relocation = value + signed_addend; | |
3492 | relocation -= (input_section->output_section->vma | |
3493 | + input_section->output_offset | |
3494 | + rel->r_offset); | |
3495 | ||
3496 | check = relocation >> howto->rightshift; | |
3497 | ||
3498 | /* If this is a signed value, the rightshift just dropped | |
3499 | leading 1 bits (assuming twos complement). */ | |
3500 | if ((bfd_signed_vma) relocation >= 0) | |
3501 | signed_check = check; | |
3502 | else | |
3503 | signed_check = check | ~((bfd_vma) -1 >> howto->rightshift); | |
3504 | ||
3505 | /* Assumes two's complement. */ | |
3506 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) | |
3507 | overflow = TRUE; | |
3508 | ||
3509 | /* Put RELOCATION back into the insn. */ | |
3510 | { | |
3511 | bfd_vma S = (relocation & 0x01000000) >> 24; | |
3512 | bfd_vma I1 = (relocation & 0x00800000) >> 23; | |
3513 | bfd_vma I2 = (relocation & 0x00400000) >> 22; | |
3514 | bfd_vma hi = (relocation & 0x003ff000) >> 12; | |
3515 | bfd_vma lo = (relocation & 0x00000ffe) >> 1; | |
3516 | ||
3517 | I1 = !(I1 ^ S); | |
3518 | I2 = !(I2 ^ S); | |
3519 | ||
3520 | upper_insn = (upper_insn & (bfd_vma) 0xf800) | (S << 10) | hi; | |
3521 | lower_insn = (lower_insn & (bfd_vma) 0xd000) | (I1 << 13) | (I2 << 11) | lo; | |
3522 | } | |
3523 | ||
3524 | /* Put the relocated value back in the object file: */ | |
3525 | bfd_put_16 (input_bfd, upper_insn, hit_data); | |
3526 | bfd_put_16 (input_bfd, lower_insn, hit_data + 2); | |
3527 | ||
3528 | return (overflow ? bfd_reloc_overflow : bfd_reloc_ok); | |
3529 | } | |
3530 | ||
3531 | case R_ARM_THM_JUMP19: | |
3532 | /* Thumb32 conditional branch instruction. */ | |
3533 | { | |
3534 | bfd_vma relocation; | |
3535 | bfd_boolean overflow = FALSE; | |
3536 | bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); | |
3537 | bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); | |
3538 | bfd_signed_vma reloc_signed_max = ((1 << (howto->bitsize - 1)) - 1) >> howto->rightshift; | |
3539 | bfd_signed_vma reloc_signed_min = ~ reloc_signed_max; | |
3540 | bfd_vma check; | |
3541 | bfd_signed_vma signed_check; | |
3542 | ||
3543 | /* Need to refetch the addend, reconstruct the top three bits, | |
3544 | and squish the two 11 bit pieces together. */ | |
3545 | if (globals->use_rel) | |
3546 | { | |
3547 | bfd_vma S = (upper_insn & 0x0400) >> 10; | |
3548 | bfd_vma upper = (upper_insn & 0x001f); | |
3549 | bfd_vma J1 = (lower_insn & 0x2000) >> 13; | |
3550 | bfd_vma J2 = (lower_insn & 0x0800) >> 11; | |
3551 | bfd_vma lower = (lower_insn & 0x07ff); | |
3552 | ||
3553 | upper |= J2 << 6; | |
3554 | upper |= J1 << 7; | |
3555 | upper |= ~S << 8; | |
3556 | upper -= 0x0100; /* Sign extend. */ | |
3557 | ||
3558 | addend = (upper << 12) | (lower << 1); | |
3559 | signed_addend = addend; | |
3560 | } | |
3561 | ||
3562 | /* ??? Should handle interworking? GCC might someday try to | |
3563 | use this for tail calls. */ | |
3564 | ||
3565 | relocation = value + signed_addend; | |
3566 | relocation -= (input_section->output_section->vma | |
3567 | + input_section->output_offset | |
3568 | + rel->r_offset); | |
3569 | ||
3570 | check = relocation >> howto->rightshift; | |
3571 | ||
3572 | /* If this is a signed value, the rightshift just dropped | |
3573 | leading 1 bits (assuming twos complement). */ | |
3574 | if ((bfd_signed_vma) relocation >= 0) | |
3575 | signed_check = check; | |
3576 | else | |
3577 | signed_check = check | ~((bfd_vma) -1 >> howto->rightshift); | |
3578 | ||
3579 | /* Assumes two's complement. */ | |
3580 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) | |
3581 | overflow = TRUE; | |
3582 | ||
3583 | /* Put RELOCATION back into the insn. */ | |
3584 | { | |
3585 | bfd_vma S = (relocation & 0x00100000) >> 20; | |
3586 | bfd_vma J2 = (relocation & 0x00080000) >> 19; | |
3587 | bfd_vma J1 = (relocation & 0x00040000) >> 18; | |
3588 | bfd_vma hi = (relocation & 0x0003f000) >> 12; | |
3589 | bfd_vma lo = (relocation & 0x00000ffe) >> 1; | |
3590 | ||
3591 | upper_insn = (upper_insn & 0xfb30) | (S << 10) | hi; | |
3592 | lower_insn = (lower_insn & 0xd000) | (J1 << 13) | (J2 << 11) | lo; | |
3593 | } | |
3594 | ||
3595 | /* Put the relocated value back in the object file: */ | |
3596 | bfd_put_16 (input_bfd, upper_insn, hit_data); | |
3597 | bfd_put_16 (input_bfd, lower_insn, hit_data + 2); | |
3598 | ||
3599 | return (overflow ? bfd_reloc_overflow : bfd_reloc_ok); | |
3600 | } | |
3601 | ||
3602 | case R_ARM_THM_JUMP11: | |
3603 | case R_ARM_THM_JUMP8: | |
3604 | case R_ARM_THM_JUMP6: | |
51c5503b NC |
3605 | /* Thumb B (branch) instruction). */ |
3606 | { | |
6cf9e9fe | 3607 | bfd_signed_vma relocation; |
51c5503b NC |
3608 | bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1; |
3609 | bfd_signed_vma reloc_signed_min = ~ reloc_signed_max; | |
51c5503b NC |
3610 | bfd_signed_vma signed_check; |
3611 | ||
c19d1205 ZW |
3612 | /* CZB cannot jump backward. */ |
3613 | if (r_type == R_ARM_THM_JUMP6) | |
3614 | reloc_signed_min = 0; | |
3615 | ||
4e7fd91e | 3616 | if (globals->use_rel) |
6cf9e9fe | 3617 | { |
4e7fd91e PB |
3618 | /* Need to refetch addend. */ |
3619 | addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask; | |
3620 | if (addend & ((howto->src_mask + 1) >> 1)) | |
3621 | { | |
3622 | signed_addend = -1; | |
3623 | signed_addend &= ~ howto->src_mask; | |
3624 | signed_addend |= addend; | |
3625 | } | |
3626 | else | |
3627 | signed_addend = addend; | |
3628 | /* The value in the insn has been right shifted. We need to | |
3629 | undo this, so that we can perform the address calculation | |
3630 | in terms of bytes. */ | |
3631 | signed_addend <<= howto->rightshift; | |
6cf9e9fe | 3632 | } |
6cf9e9fe | 3633 | relocation = value + signed_addend; |
51c5503b NC |
3634 | |
3635 | relocation -= (input_section->output_section->vma | |
3636 | + input_section->output_offset | |
3637 | + rel->r_offset); | |
3638 | ||
6cf9e9fe NC |
3639 | relocation >>= howto->rightshift; |
3640 | signed_check = relocation; | |
c19d1205 ZW |
3641 | |
3642 | if (r_type == R_ARM_THM_JUMP6) | |
3643 | relocation = ((relocation & 0x0020) << 4) | ((relocation & 0x001f) << 3); | |
3644 | else | |
3645 | relocation &= howto->dst_mask; | |
51c5503b | 3646 | relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask)); |
cedb70c5 | 3647 | |
51c5503b NC |
3648 | bfd_put_16 (input_bfd, relocation, hit_data); |
3649 | ||
3650 | /* Assumes two's complement. */ | |
3651 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) | |
3652 | return bfd_reloc_overflow; | |
3653 | ||
3654 | return bfd_reloc_ok; | |
3655 | } | |
cedb70c5 | 3656 | |
8375c36b PB |
3657 | case R_ARM_ALU_PCREL7_0: |
3658 | case R_ARM_ALU_PCREL15_8: | |
3659 | case R_ARM_ALU_PCREL23_15: | |
3660 | { | |
3661 | bfd_vma insn; | |
3662 | bfd_vma relocation; | |
3663 | ||
3664 | insn = bfd_get_32 (input_bfd, hit_data); | |
4e7fd91e PB |
3665 | if (globals->use_rel) |
3666 | { | |
3667 | /* Extract the addend. */ | |
3668 | addend = (insn & 0xff) << ((insn & 0xf00) >> 7); | |
3669 | signed_addend = addend; | |
3670 | } | |
8375c36b PB |
3671 | relocation = value + signed_addend; |
3672 | ||
3673 | relocation -= (input_section->output_section->vma | |
3674 | + input_section->output_offset | |
3675 | + rel->r_offset); | |
3676 | insn = (insn & ~0xfff) | |
3677 | | ((howto->bitpos << 7) & 0xf00) | |
3678 | | ((relocation >> howto->bitpos) & 0xff); | |
3679 | bfd_put_32 (input_bfd, value, hit_data); | |
3680 | } | |
3681 | return bfd_reloc_ok; | |
3682 | ||
252b5132 RH |
3683 | case R_ARM_GNU_VTINHERIT: |
3684 | case R_ARM_GNU_VTENTRY: | |
3685 | return bfd_reloc_ok; | |
3686 | ||
c19d1205 | 3687 | case R_ARM_GOTOFF32: |
252b5132 RH |
3688 | /* Relocation is relative to the start of the |
3689 | global offset table. */ | |
3690 | ||
3691 | BFD_ASSERT (sgot != NULL); | |
3692 | if (sgot == NULL) | |
3693 | return bfd_reloc_notsupported; | |
9a5aca8c | 3694 | |
cedb70c5 | 3695 | /* If we are addressing a Thumb function, we need to adjust the |
ee29b9fb RE |
3696 | address by one, so that attempts to call the function pointer will |
3697 | correctly interpret it as Thumb code. */ | |
3698 | if (sym_flags == STT_ARM_TFUNC) | |
3699 | value += 1; | |
3700 | ||
252b5132 RH |
3701 | /* Note that sgot->output_offset is not involved in this |
3702 | calculation. We always want the start of .got. If we | |
3703 | define _GLOBAL_OFFSET_TABLE in a different way, as is | |
3704 | permitted by the ABI, we might have to change this | |
9b485d32 | 3705 | calculation. */ |
252b5132 | 3706 | value -= sgot->output_section->vma; |
f21f3fe0 | 3707 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 | 3708 | contents, rel->r_offset, value, |
00a97672 | 3709 | rel->r_addend); |
252b5132 RH |
3710 | |
3711 | case R_ARM_GOTPC: | |
a7c10850 | 3712 | /* Use global offset table as symbol value. */ |
252b5132 | 3713 | BFD_ASSERT (sgot != NULL); |
f21f3fe0 | 3714 | |
252b5132 RH |
3715 | if (sgot == NULL) |
3716 | return bfd_reloc_notsupported; | |
3717 | ||
0945cdfd | 3718 | *unresolved_reloc_p = FALSE; |
252b5132 | 3719 | value = sgot->output_section->vma; |
f21f3fe0 | 3720 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 | 3721 | contents, rel->r_offset, value, |
00a97672 | 3722 | rel->r_addend); |
f21f3fe0 | 3723 | |
252b5132 | 3724 | case R_ARM_GOT32: |
eb043451 | 3725 | case R_ARM_GOT_PREL: |
252b5132 | 3726 | /* Relocation is to the entry for this symbol in the |
9b485d32 | 3727 | global offset table. */ |
252b5132 RH |
3728 | if (sgot == NULL) |
3729 | return bfd_reloc_notsupported; | |
f21f3fe0 | 3730 | |
252b5132 RH |
3731 | if (h != NULL) |
3732 | { | |
3733 | bfd_vma off; | |
5e681ec4 | 3734 | bfd_boolean dyn; |
f21f3fe0 | 3735 | |
252b5132 RH |
3736 | off = h->got.offset; |
3737 | BFD_ASSERT (off != (bfd_vma) -1); | |
5e681ec4 | 3738 | dyn = globals->root.dynamic_sections_created; |
f21f3fe0 | 3739 | |
5e681ec4 | 3740 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
50d6c878 | 3741 | || (info->shared |
5e681ec4 PB |
3742 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
3743 | || (ELF_ST_VISIBILITY (h->other) | |
3744 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
3745 | { |
3746 | /* This is actually a static link, or it is a -Bsymbolic link | |
3747 | and the symbol is defined locally. We must initialize this | |
3748 | entry in the global offset table. Since the offset must | |
3749 | always be a multiple of 4, we use the least significant bit | |
3750 | to record whether we have initialized it already. | |
f21f3fe0 | 3751 | |
00a97672 | 3752 | When doing a dynamic link, we create a .rel(a).got relocation |
f21f3fe0 | 3753 | entry to initialize the value. This is done in the |
9b485d32 | 3754 | finish_dynamic_symbol routine. */ |
252b5132 RH |
3755 | if ((off & 1) != 0) |
3756 | off &= ~1; | |
3757 | else | |
3758 | { | |
ee29b9fb RE |
3759 | /* If we are addressing a Thumb function, we need to |
3760 | adjust the address by one, so that attempts to | |
3761 | call the function pointer will correctly | |
3762 | interpret it as Thumb code. */ | |
3763 | if (sym_flags == STT_ARM_TFUNC) | |
3764 | value |= 1; | |
3765 | ||
252b5132 RH |
3766 | bfd_put_32 (output_bfd, value, sgot->contents + off); |
3767 | h->got.offset |= 1; | |
3768 | } | |
3769 | } | |
0945cdfd DJ |
3770 | else |
3771 | *unresolved_reloc_p = FALSE; | |
f21f3fe0 | 3772 | |
252b5132 RH |
3773 | value = sgot->output_offset + off; |
3774 | } | |
3775 | else | |
3776 | { | |
3777 | bfd_vma off; | |
f21f3fe0 | 3778 | |
252b5132 RH |
3779 | BFD_ASSERT (local_got_offsets != NULL && |
3780 | local_got_offsets[r_symndx] != (bfd_vma) -1); | |
f21f3fe0 | 3781 | |
252b5132 | 3782 | off = local_got_offsets[r_symndx]; |
f21f3fe0 | 3783 | |
252b5132 RH |
3784 | /* The offset must always be a multiple of 4. We use the |
3785 | least significant bit to record whether we have already | |
9b485d32 | 3786 | generated the necessary reloc. */ |
252b5132 RH |
3787 | if ((off & 1) != 0) |
3788 | off &= ~1; | |
3789 | else | |
3790 | { | |
b7693d02 DJ |
3791 | /* If we are addressing a Thumb function, we need to |
3792 | adjust the address by one, so that attempts to | |
3793 | call the function pointer will correctly | |
3794 | interpret it as Thumb code. */ | |
3795 | if (sym_flags == STT_ARM_TFUNC) | |
3796 | value |= 1; | |
3797 | ||
00a97672 RS |
3798 | if (globals->use_rel) |
3799 | bfd_put_32 (output_bfd, value, sgot->contents + off); | |
f21f3fe0 | 3800 | |
252b5132 RH |
3801 | if (info->shared) |
3802 | { | |
3803 | asection * srelgot; | |
947216bf AM |
3804 | Elf_Internal_Rela outrel; |
3805 | bfd_byte *loc; | |
f21f3fe0 | 3806 | |
00a97672 RS |
3807 | srelgot = (bfd_get_section_by_name |
3808 | (dynobj, RELOC_SECTION (globals, ".got"))); | |
252b5132 | 3809 | BFD_ASSERT (srelgot != NULL); |
f21f3fe0 | 3810 | |
00a97672 | 3811 | outrel.r_addend = addend + value; |
252b5132 | 3812 | outrel.r_offset = (sgot->output_section->vma |
f21f3fe0 | 3813 | + sgot->output_offset |
252b5132 RH |
3814 | + off); |
3815 | outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); | |
947216bf | 3816 | loc = srelgot->contents; |
00a97672 RS |
3817 | loc += srelgot->reloc_count++ * RELOC_SIZE (globals); |
3818 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
252b5132 | 3819 | } |
f21f3fe0 | 3820 | |
252b5132 RH |
3821 | local_got_offsets[r_symndx] |= 1; |
3822 | } | |
f21f3fe0 | 3823 | |
252b5132 RH |
3824 | value = sgot->output_offset + off; |
3825 | } | |
eb043451 PB |
3826 | if (r_type != R_ARM_GOT32) |
3827 | value += sgot->output_section->vma; | |
9a5aca8c | 3828 | |
f21f3fe0 | 3829 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 | 3830 | contents, rel->r_offset, value, |
00a97672 | 3831 | rel->r_addend); |
f21f3fe0 | 3832 | |
ba93b8ac DJ |
3833 | case R_ARM_TLS_LDO32: |
3834 | value = value - dtpoff_base (info); | |
3835 | ||
3836 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
00a97672 RS |
3837 | contents, rel->r_offset, value, |
3838 | rel->r_addend); | |
ba93b8ac DJ |
3839 | |
3840 | case R_ARM_TLS_LDM32: | |
3841 | { | |
3842 | bfd_vma off; | |
3843 | ||
3844 | if (globals->sgot == NULL) | |
3845 | abort (); | |
3846 | ||
3847 | off = globals->tls_ldm_got.offset; | |
3848 | ||
3849 | if ((off & 1) != 0) | |
3850 | off &= ~1; | |
3851 | else | |
3852 | { | |
3853 | /* If we don't know the module number, create a relocation | |
3854 | for it. */ | |
3855 | if (info->shared) | |
3856 | { | |
3857 | Elf_Internal_Rela outrel; | |
3858 | bfd_byte *loc; | |
3859 | ||
3860 | if (globals->srelgot == NULL) | |
3861 | abort (); | |
3862 | ||
00a97672 | 3863 | outrel.r_addend = 0; |
ba93b8ac DJ |
3864 | outrel.r_offset = (globals->sgot->output_section->vma |
3865 | + globals->sgot->output_offset + off); | |
3866 | outrel.r_info = ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32); | |
3867 | ||
00a97672 RS |
3868 | if (globals->use_rel) |
3869 | bfd_put_32 (output_bfd, outrel.r_addend, | |
3870 | globals->sgot->contents + off); | |
ba93b8ac DJ |
3871 | |
3872 | loc = globals->srelgot->contents; | |
00a97672 RS |
3873 | loc += globals->srelgot->reloc_count++ * RELOC_SIZE (globals); |
3874 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
ba93b8ac DJ |
3875 | } |
3876 | else | |
3877 | bfd_put_32 (output_bfd, 1, globals->sgot->contents + off); | |
3878 | ||
3879 | globals->tls_ldm_got.offset |= 1; | |
3880 | } | |
3881 | ||
3882 | value = globals->sgot->output_section->vma + globals->sgot->output_offset + off | |
3883 | - (input_section->output_section->vma + input_section->output_offset + rel->r_offset); | |
3884 | ||
3885 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3886 | contents, rel->r_offset, value, | |
00a97672 | 3887 | rel->r_addend); |
ba93b8ac DJ |
3888 | } |
3889 | ||
3890 | case R_ARM_TLS_GD32: | |
3891 | case R_ARM_TLS_IE32: | |
3892 | { | |
3893 | bfd_vma off; | |
3894 | int indx; | |
3895 | char tls_type; | |
3896 | ||
3897 | if (globals->sgot == NULL) | |
3898 | abort (); | |
3899 | ||
3900 | indx = 0; | |
3901 | if (h != NULL) | |
3902 | { | |
3903 | bfd_boolean dyn; | |
3904 | dyn = globals->root.dynamic_sections_created; | |
3905 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
3906 | && (!info->shared | |
3907 | || !SYMBOL_REFERENCES_LOCAL (info, h))) | |
3908 | { | |
3909 | *unresolved_reloc_p = FALSE; | |
3910 | indx = h->dynindx; | |
3911 | } | |
3912 | off = h->got.offset; | |
3913 | tls_type = ((struct elf32_arm_link_hash_entry *) h)->tls_type; | |
3914 | } | |
3915 | else | |
3916 | { | |
3917 | if (local_got_offsets == NULL) | |
3918 | abort (); | |
3919 | off = local_got_offsets[r_symndx]; | |
3920 | tls_type = elf32_arm_local_got_tls_type (input_bfd)[r_symndx]; | |
3921 | } | |
3922 | ||
3923 | if (tls_type == GOT_UNKNOWN) | |
3924 | abort (); | |
3925 | ||
3926 | if ((off & 1) != 0) | |
3927 | off &= ~1; | |
3928 | else | |
3929 | { | |
3930 | bfd_boolean need_relocs = FALSE; | |
3931 | Elf_Internal_Rela outrel; | |
3932 | bfd_byte *loc = NULL; | |
3933 | int cur_off = off; | |
3934 | ||
3935 | /* The GOT entries have not been initialized yet. Do it | |
3936 | now, and emit any relocations. If both an IE GOT and a | |
3937 | GD GOT are necessary, we emit the GD first. */ | |
3938 | ||
3939 | if ((info->shared || indx != 0) | |
3940 | && (h == NULL | |
3941 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
3942 | || h->root.type != bfd_link_hash_undefweak)) | |
3943 | { | |
3944 | need_relocs = TRUE; | |
3945 | if (globals->srelgot == NULL) | |
3946 | abort (); | |
3947 | loc = globals->srelgot->contents; | |
00a97672 | 3948 | loc += globals->srelgot->reloc_count * RELOC_SIZE (globals); |
ba93b8ac DJ |
3949 | } |
3950 | ||
3951 | if (tls_type & GOT_TLS_GD) | |
3952 | { | |
3953 | if (need_relocs) | |
3954 | { | |
00a97672 | 3955 | outrel.r_addend = 0; |
ba93b8ac | 3956 | outrel.r_offset = (globals->sgot->output_section->vma |
00a97672 RS |
3957 | + globals->sgot->output_offset |
3958 | + cur_off); | |
ba93b8ac | 3959 | outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DTPMOD32); |
ba93b8ac | 3960 | |
00a97672 RS |
3961 | if (globals->use_rel) |
3962 | bfd_put_32 (output_bfd, outrel.r_addend, | |
3963 | globals->sgot->contents + cur_off); | |
3964 | ||
3965 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
ba93b8ac | 3966 | globals->srelgot->reloc_count++; |
00a97672 | 3967 | loc += RELOC_SIZE (globals); |
ba93b8ac DJ |
3968 | |
3969 | if (indx == 0) | |
3970 | bfd_put_32 (output_bfd, value - dtpoff_base (info), | |
3971 | globals->sgot->contents + cur_off + 4); | |
3972 | else | |
3973 | { | |
00a97672 | 3974 | outrel.r_addend = 0; |
ba93b8ac DJ |
3975 | outrel.r_info = ELF32_R_INFO (indx, |
3976 | R_ARM_TLS_DTPOFF32); | |
3977 | outrel.r_offset += 4; | |
00a97672 RS |
3978 | |
3979 | if (globals->use_rel) | |
3980 | bfd_put_32 (output_bfd, outrel.r_addend, | |
3981 | globals->sgot->contents + cur_off + 4); | |
3982 | ||
3983 | ||
3984 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
ba93b8ac | 3985 | globals->srelgot->reloc_count++; |
00a97672 | 3986 | loc += RELOC_SIZE (globals); |
ba93b8ac DJ |
3987 | } |
3988 | } | |
3989 | else | |
3990 | { | |
3991 | /* If we are not emitting relocations for a | |
3992 | general dynamic reference, then we must be in a | |
3993 | static link or an executable link with the | |
3994 | symbol binding locally. Mark it as belonging | |
3995 | to module 1, the executable. */ | |
3996 | bfd_put_32 (output_bfd, 1, | |
3997 | globals->sgot->contents + cur_off); | |
3998 | bfd_put_32 (output_bfd, value - dtpoff_base (info), | |
3999 | globals->sgot->contents + cur_off + 4); | |
4000 | } | |
4001 | ||
4002 | cur_off += 8; | |
4003 | } | |
4004 | ||
4005 | if (tls_type & GOT_TLS_IE) | |
4006 | { | |
4007 | if (need_relocs) | |
4008 | { | |
00a97672 RS |
4009 | if (indx == 0) |
4010 | outrel.r_addend = value - dtpoff_base (info); | |
4011 | else | |
4012 | outrel.r_addend = 0; | |
ba93b8ac DJ |
4013 | outrel.r_offset = (globals->sgot->output_section->vma |
4014 | + globals->sgot->output_offset | |
4015 | + cur_off); | |
4016 | outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_TPOFF32); | |
4017 | ||
00a97672 RS |
4018 | if (globals->use_rel) |
4019 | bfd_put_32 (output_bfd, outrel.r_addend, | |
ba93b8ac DJ |
4020 | globals->sgot->contents + cur_off); |
4021 | ||
00a97672 | 4022 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); |
ba93b8ac | 4023 | globals->srelgot->reloc_count++; |
00a97672 | 4024 | loc += RELOC_SIZE (globals); |
ba93b8ac DJ |
4025 | } |
4026 | else | |
4027 | bfd_put_32 (output_bfd, tpoff (info, value), | |
4028 | globals->sgot->contents + cur_off); | |
4029 | cur_off += 4; | |
4030 | } | |
4031 | ||
4032 | if (h != NULL) | |
4033 | h->got.offset |= 1; | |
4034 | else | |
4035 | local_got_offsets[r_symndx] |= 1; | |
4036 | } | |
4037 | ||
4038 | if ((tls_type & GOT_TLS_GD) && r_type != R_ARM_TLS_GD32) | |
4039 | off += 8; | |
4040 | value = globals->sgot->output_section->vma + globals->sgot->output_offset + off | |
4041 | - (input_section->output_section->vma + input_section->output_offset + rel->r_offset); | |
4042 | ||
4043 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
4044 | contents, rel->r_offset, value, | |
00a97672 | 4045 | rel->r_addend); |
ba93b8ac DJ |
4046 | } |
4047 | ||
4048 | case R_ARM_TLS_LE32: | |
4049 | if (info->shared) | |
4050 | { | |
4051 | (*_bfd_error_handler) | |
4052 | (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"), | |
4053 | input_bfd, input_section, | |
4054 | (long) rel->r_offset, howto->name); | |
4055 | return FALSE; | |
4056 | } | |
4057 | else | |
4058 | value = tpoff (info, value); | |
4059 | ||
4060 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
00a97672 RS |
4061 | contents, rel->r_offset, value, |
4062 | rel->r_addend); | |
ba93b8ac | 4063 | |
319850b4 JB |
4064 | case R_ARM_V4BX: |
4065 | if (globals->fix_v4bx) | |
4066 | { | |
4067 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
4068 | ||
4069 | /* Ensure that we have a BX instruction. */ | |
4070 | BFD_ASSERT ((insn & 0x0ffffff0) == 0x012fff10); | |
4071 | ||
4072 | /* Preserve Rm (lowest four bits) and the condition code | |
4073 | (highest four bits). Other bits encode MOV PC,Rm. */ | |
4074 | insn = (insn & 0xf000000f) | 0x01a0f000; | |
4075 | ||
4076 | bfd_put_32 (input_bfd, insn, hit_data); | |
4077 | } | |
4078 | return bfd_reloc_ok; | |
4079 | ||
252b5132 RH |
4080 | default: |
4081 | return bfd_reloc_notsupported; | |
4082 | } | |
4083 | } | |
4084 | ||
ee065d83 PB |
4085 | |
4086 | static int | |
4087 | uleb128_size (unsigned int i) | |
4088 | { | |
4089 | int size; | |
4090 | size = 1; | |
4091 | while (i >= 0x80) | |
4092 | { | |
4093 | i >>= 7; | |
4094 | size++; | |
4095 | } | |
4096 | return size; | |
4097 | } | |
4098 | ||
4099 | /* Return TRUE if the attribute has the default value (0/""). */ | |
4100 | static bfd_boolean | |
4101 | is_default_attr (aeabi_attribute *attr) | |
4102 | { | |
4103 | if ((attr->type & 1) && attr->i != 0) | |
4104 | return FALSE; | |
4105 | if ((attr->type & 2) && attr->s && *attr->s) | |
4106 | return FALSE; | |
4107 | ||
4108 | return TRUE; | |
4109 | } | |
4110 | ||
4111 | /* Return the size of a single attribute. */ | |
4112 | static bfd_vma | |
4113 | eabi_attr_size(int tag, aeabi_attribute *attr) | |
4114 | { | |
4115 | bfd_vma size; | |
4116 | ||
4117 | if (is_default_attr (attr)) | |
4118 | return 0; | |
4119 | ||
4120 | size = uleb128_size (tag); | |
4121 | if (attr->type & 1) | |
4122 | size += uleb128_size (attr->i); | |
4123 | if (attr->type & 2) | |
4124 | size += strlen ((char *)attr->s) + 1; | |
4125 | return size; | |
4126 | } | |
4127 | ||
4128 | /* Returns the size of the eabi object attributess section. */ | |
4129 | bfd_vma | |
4130 | elf32_arm_eabi_attr_size (bfd *abfd) | |
4131 | { | |
4132 | bfd_vma size; | |
4133 | aeabi_attribute *attr; | |
4134 | aeabi_attribute_list *list; | |
4135 | int i; | |
4136 | ||
4137 | attr = elf32_arm_tdata (abfd)->known_eabi_attributes; | |
4138 | size = 16; /* 'A' <size> "aeabi" 0x1 <size>. */ | |
4139 | for (i = 4; i < NUM_KNOWN_ATTRIBUTES; i++) | |
4140 | size += eabi_attr_size (i, &attr[i]); | |
4141 | ||
4142 | for (list = elf32_arm_tdata (abfd)->other_eabi_attributes; | |
4143 | list; | |
4144 | list = list->next) | |
4145 | size += eabi_attr_size (list->tag, &list->attr); | |
4146 | ||
4147 | return size; | |
4148 | } | |
4149 | ||
4150 | static bfd_byte * | |
4151 | write_uleb128 (bfd_byte *p, unsigned int val) | |
4152 | { | |
4153 | bfd_byte c; | |
4154 | do | |
4155 | { | |
4156 | c = val & 0x7f; | |
4157 | val >>= 7; | |
4158 | if (val) | |
4159 | c |= 0x80; | |
4160 | *(p++) = c; | |
4161 | } | |
4162 | while (val); | |
4163 | return p; | |
4164 | } | |
4165 | ||
4166 | /* Write attribute ATTR to butter P, and return a pointer to the following | |
4167 | byte. */ | |
4168 | static bfd_byte * | |
4169 | write_eabi_attribute (bfd_byte *p, int tag, aeabi_attribute *attr) | |
4170 | { | |
4171 | /* Suppress default entries. */ | |
4172 | if (is_default_attr(attr)) | |
4173 | return p; | |
4174 | ||
4175 | p = write_uleb128 (p, tag); | |
4176 | if (attr->type & 1) | |
4177 | p = write_uleb128 (p, attr->i); | |
4178 | if (attr->type & 2) | |
4179 | { | |
4180 | int len; | |
4181 | ||
4182 | len = strlen (attr->s) + 1; | |
4183 | memcpy (p, attr->s, len); | |
4184 | p += len; | |
4185 | } | |
4186 | ||
4187 | return p; | |
4188 | } | |
4189 | ||
4190 | /* Write the contents of the eabi attributes section to p. */ | |
4191 | void | |
4192 | elf32_arm_set_eabi_attr_contents (bfd *abfd, bfd_byte *contents, bfd_vma size) | |
4193 | { | |
4194 | bfd_byte *p; | |
4195 | aeabi_attribute *attr; | |
4196 | aeabi_attribute_list *list; | |
4197 | int i; | |
4198 | ||
4199 | p = contents; | |
4200 | *(p++) = 'A'; | |
4201 | bfd_put_32 (abfd, size - 1, p); | |
4202 | p += 4; | |
4203 | memcpy (p, "aeabi", 6); | |
4204 | p += 6; | |
4205 | *(p++) = Tag_File; | |
4206 | bfd_put_32 (abfd, size - 11, p); | |
4207 | p += 4; | |
4208 | ||
4209 | attr = elf32_arm_tdata (abfd)->known_eabi_attributes; | |
4210 | for (i = 4; i < NUM_KNOWN_ATTRIBUTES; i++) | |
4211 | p = write_eabi_attribute (p, i, &attr[i]); | |
4212 | ||
4213 | for (list = elf32_arm_tdata (abfd)->other_eabi_attributes; | |
4214 | list; | |
4215 | list = list->next) | |
4216 | p = write_eabi_attribute (p, list->tag, &list->attr); | |
4217 | } | |
4218 | ||
4219 | /* Override final_link to handle EABI object attribute sections. */ | |
4220 | ||
4221 | static bfd_boolean | |
4222 | elf32_arm_bfd_final_link (bfd *abfd, struct bfd_link_info *info) | |
4223 | { | |
4224 | asection *o; | |
4225 | struct bfd_link_order *p; | |
4226 | asection *attr_section = NULL; | |
4227 | bfd_byte *contents; | |
4228 | bfd_vma size = 0; | |
4229 | ||
4230 | /* elf32_arm_merge_private_bfd_data will already have merged the | |
4231 | object attributes. Remove the input sections from the link, and set | |
4232 | the contents of the output secton. */ | |
4233 | for (o = abfd->sections; o != NULL; o = o->next) | |
4234 | { | |
4235 | if (strcmp (o->name, ".ARM.attributes") == 0) | |
4236 | { | |
4237 | for (p = o->map_head.link_order; p != NULL; p = p->next) | |
4238 | { | |
4239 | asection *input_section; | |
4240 | ||
4241 | if (p->type != bfd_indirect_link_order) | |
4242 | continue; | |
4243 | input_section = p->u.indirect.section; | |
4244 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
4245 | elf_link_input_bfd ignores this section. */ | |
4246 | input_section->flags &= ~SEC_HAS_CONTENTS; | |
4247 | } | |
4248 | ||
4249 | size = elf32_arm_eabi_attr_size (abfd); | |
4250 | bfd_set_section_size (abfd, o, size); | |
4251 | attr_section = o; | |
4252 | /* Skip this section later on. */ | |
4253 | o->map_head.link_order = NULL; | |
4254 | } | |
4255 | } | |
4256 | /* Invoke the ELF linker to do all the work. */ | |
4257 | if (!bfd_elf_final_link (abfd, info)) | |
4258 | return FALSE; | |
4259 | ||
4260 | if (attr_section) | |
4261 | { | |
4262 | contents = bfd_malloc(size); | |
4263 | if (contents == NULL) | |
4264 | return FALSE; | |
4265 | elf32_arm_set_eabi_attr_contents (abfd, contents, size); | |
4266 | bfd_set_section_contents (abfd, attr_section, contents, 0, size); | |
4267 | free (contents); | |
4268 | } | |
4269 | return TRUE; | |
4270 | } | |
4271 | ||
4272 | ||
98c1d4aa NC |
4273 | /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */ |
4274 | static void | |
57e8b36a NC |
4275 | arm_add_to_rel (bfd * abfd, |
4276 | bfd_byte * address, | |
4277 | reloc_howto_type * howto, | |
4278 | bfd_signed_vma increment) | |
98c1d4aa | 4279 | { |
98c1d4aa NC |
4280 | bfd_signed_vma addend; |
4281 | ||
c19d1205 | 4282 | if (howto->type == R_ARM_THM_CALL) |
98c1d4aa | 4283 | { |
9a5aca8c AM |
4284 | int upper_insn, lower_insn; |
4285 | int upper, lower; | |
98c1d4aa | 4286 | |
9a5aca8c AM |
4287 | upper_insn = bfd_get_16 (abfd, address); |
4288 | lower_insn = bfd_get_16 (abfd, address + 2); | |
4289 | upper = upper_insn & 0x7ff; | |
4290 | lower = lower_insn & 0x7ff; | |
4291 | ||
4292 | addend = (upper << 12) | (lower << 1); | |
ddda4409 | 4293 | addend += increment; |
9a5aca8c | 4294 | addend >>= 1; |
98c1d4aa | 4295 | |
9a5aca8c AM |
4296 | upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff); |
4297 | lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff); | |
4298 | ||
dc810e39 AM |
4299 | bfd_put_16 (abfd, (bfd_vma) upper_insn, address); |
4300 | bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2); | |
9a5aca8c AM |
4301 | } |
4302 | else | |
4303 | { | |
4304 | bfd_vma contents; | |
4305 | ||
4306 | contents = bfd_get_32 (abfd, address); | |
4307 | ||
4308 | /* Get the (signed) value from the instruction. */ | |
4309 | addend = contents & howto->src_mask; | |
4310 | if (addend & ((howto->src_mask + 1) >> 1)) | |
4311 | { | |
4312 | bfd_signed_vma mask; | |
4313 | ||
4314 | mask = -1; | |
4315 | mask &= ~ howto->src_mask; | |
4316 | addend |= mask; | |
4317 | } | |
4318 | ||
4319 | /* Add in the increment, (which is a byte value). */ | |
4320 | switch (howto->type) | |
4321 | { | |
4322 | default: | |
4323 | addend += increment; | |
4324 | break; | |
4325 | ||
4326 | case R_ARM_PC24: | |
c6596c5e | 4327 | case R_ARM_PLT32: |
5b5bb741 PB |
4328 | case R_ARM_CALL: |
4329 | case R_ARM_JUMP24: | |
9a5aca8c | 4330 | addend <<= howto->size; |
dc810e39 | 4331 | addend += increment; |
9a5aca8c AM |
4332 | |
4333 | /* Should we check for overflow here ? */ | |
4334 | ||
4335 | /* Drop any undesired bits. */ | |
4336 | addend >>= howto->rightshift; | |
4337 | break; | |
4338 | } | |
4339 | ||
4340 | contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask); | |
4341 | ||
4342 | bfd_put_32 (abfd, contents, address); | |
ddda4409 | 4343 | } |
98c1d4aa | 4344 | } |
252b5132 | 4345 | |
ba93b8ac DJ |
4346 | #define IS_ARM_TLS_RELOC(R_TYPE) \ |
4347 | ((R_TYPE) == R_ARM_TLS_GD32 \ | |
4348 | || (R_TYPE) == R_ARM_TLS_LDO32 \ | |
4349 | || (R_TYPE) == R_ARM_TLS_LDM32 \ | |
4350 | || (R_TYPE) == R_ARM_TLS_DTPOFF32 \ | |
4351 | || (R_TYPE) == R_ARM_TLS_DTPMOD32 \ | |
4352 | || (R_TYPE) == R_ARM_TLS_TPOFF32 \ | |
4353 | || (R_TYPE) == R_ARM_TLS_LE32 \ | |
4354 | || (R_TYPE) == R_ARM_TLS_IE32) | |
4355 | ||
252b5132 | 4356 | /* Relocate an ARM ELF section. */ |
b34976b6 | 4357 | static bfd_boolean |
57e8b36a NC |
4358 | elf32_arm_relocate_section (bfd * output_bfd, |
4359 | struct bfd_link_info * info, | |
4360 | bfd * input_bfd, | |
4361 | asection * input_section, | |
4362 | bfd_byte * contents, | |
4363 | Elf_Internal_Rela * relocs, | |
4364 | Elf_Internal_Sym * local_syms, | |
4365 | asection ** local_sections) | |
252b5132 | 4366 | { |
b34976b6 AM |
4367 | Elf_Internal_Shdr *symtab_hdr; |
4368 | struct elf_link_hash_entry **sym_hashes; | |
4369 | Elf_Internal_Rela *rel; | |
4370 | Elf_Internal_Rela *relend; | |
4371 | const char *name; | |
b32d3aa2 | 4372 | struct elf32_arm_link_hash_table * globals; |
252b5132 | 4373 | |
4e7fd91e PB |
4374 | globals = elf32_arm_hash_table (info); |
4375 | if (info->relocatable && !globals->use_rel) | |
b34976b6 | 4376 | return TRUE; |
b491616a | 4377 | |
252b5132 RH |
4378 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; |
4379 | sym_hashes = elf_sym_hashes (input_bfd); | |
4380 | ||
4381 | rel = relocs; | |
4382 | relend = relocs + input_section->reloc_count; | |
4383 | for (; rel < relend; rel++) | |
4384 | { | |
ba96a88f NC |
4385 | int r_type; |
4386 | reloc_howto_type * howto; | |
4387 | unsigned long r_symndx; | |
4388 | Elf_Internal_Sym * sym; | |
4389 | asection * sec; | |
252b5132 | 4390 | struct elf_link_hash_entry * h; |
ba96a88f NC |
4391 | bfd_vma relocation; |
4392 | bfd_reloc_status_type r; | |
4393 | arelent bfd_reloc; | |
ba93b8ac | 4394 | char sym_type; |
0945cdfd | 4395 | bfd_boolean unresolved_reloc = FALSE; |
f21f3fe0 | 4396 | |
252b5132 | 4397 | r_symndx = ELF32_R_SYM (rel->r_info); |
ba96a88f | 4398 | r_type = ELF32_R_TYPE (rel->r_info); |
b32d3aa2 | 4399 | r_type = arm_real_reloc_type (globals, r_type); |
252b5132 | 4400 | |
ba96a88f NC |
4401 | if ( r_type == R_ARM_GNU_VTENTRY |
4402 | || r_type == R_ARM_GNU_VTINHERIT) | |
252b5132 RH |
4403 | continue; |
4404 | ||
b32d3aa2 | 4405 | bfd_reloc.howto = elf32_arm_howto_from_type (r_type); |
ba96a88f | 4406 | howto = bfd_reloc.howto; |
252b5132 | 4407 | |
4e7fd91e | 4408 | if (info->relocatable && globals->use_rel) |
252b5132 | 4409 | { |
1049f94e | 4410 | /* This is a relocatable link. We don't have to change |
252b5132 RH |
4411 | anything, unless the reloc is against a section symbol, |
4412 | in which case we have to adjust according to where the | |
4413 | section symbol winds up in the output section. */ | |
4414 | if (r_symndx < symtab_hdr->sh_info) | |
4415 | { | |
4416 | sym = local_syms + r_symndx; | |
4417 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
4418 | { | |
4419 | sec = local_sections[r_symndx]; | |
98c1d4aa | 4420 | arm_add_to_rel (input_bfd, contents + rel->r_offset, |
dc810e39 AM |
4421 | howto, |
4422 | (bfd_signed_vma) (sec->output_offset | |
4423 | + sym->st_value)); | |
252b5132 RH |
4424 | } |
4425 | } | |
4426 | ||
4427 | continue; | |
4428 | } | |
4429 | ||
4430 | /* This is a final link. */ | |
4431 | h = NULL; | |
4432 | sym = NULL; | |
4433 | sec = NULL; | |
9b485d32 | 4434 | |
252b5132 RH |
4435 | if (r_symndx < symtab_hdr->sh_info) |
4436 | { | |
4437 | sym = local_syms + r_symndx; | |
ba93b8ac | 4438 | sym_type = ELF32_ST_TYPE (sym->st_info); |
252b5132 | 4439 | sec = local_sections[r_symndx]; |
4e7fd91e | 4440 | if (globals->use_rel) |
f8df10f4 | 4441 | { |
4e7fd91e PB |
4442 | relocation = (sec->output_section->vma |
4443 | + sec->output_offset | |
4444 | + sym->st_value); | |
4445 | if ((sec->flags & SEC_MERGE) | |
4446 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
f8df10f4 | 4447 | { |
4e7fd91e PB |
4448 | asection *msec; |
4449 | bfd_vma addend, value; | |
4450 | ||
4451 | if (howto->rightshift) | |
4452 | { | |
4453 | (*_bfd_error_handler) | |
4454 | (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"), | |
4455 | input_bfd, input_section, | |
4456 | (long) rel->r_offset, howto->name); | |
4457 | return FALSE; | |
4458 | } | |
f8df10f4 | 4459 | |
4e7fd91e | 4460 | value = bfd_get_32 (input_bfd, contents + rel->r_offset); |
f8df10f4 | 4461 | |
4e7fd91e PB |
4462 | /* Get the (signed) value from the instruction. */ |
4463 | addend = value & howto->src_mask; | |
4464 | if (addend & ((howto->src_mask + 1) >> 1)) | |
4465 | { | |
4466 | bfd_signed_vma mask; | |
f8df10f4 | 4467 | |
4e7fd91e PB |
4468 | mask = -1; |
4469 | mask &= ~ howto->src_mask; | |
4470 | addend |= mask; | |
4471 | } | |
4472 | msec = sec; | |
4473 | addend = | |
4474 | _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend) | |
4475 | - relocation; | |
4476 | addend += msec->output_section->vma + msec->output_offset; | |
4477 | value = (value & ~ howto->dst_mask) | (addend & howto->dst_mask); | |
4478 | bfd_put_32 (input_bfd, value, contents + rel->r_offset); | |
f8df10f4 | 4479 | } |
f8df10f4 | 4480 | } |
4e7fd91e PB |
4481 | else |
4482 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
252b5132 RH |
4483 | } |
4484 | else | |
4485 | { | |
560e09e9 | 4486 | bfd_boolean warned; |
560e09e9 | 4487 | |
b2a8e766 AM |
4488 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
4489 | r_symndx, symtab_hdr, sym_hashes, | |
4490 | h, sec, relocation, | |
4491 | unresolved_reloc, warned); | |
ba93b8ac DJ |
4492 | |
4493 | sym_type = h->type; | |
252b5132 RH |
4494 | } |
4495 | ||
4496 | if (h != NULL) | |
4497 | name = h->root.root.string; | |
4498 | else | |
4499 | { | |
4500 | name = (bfd_elf_string_from_elf_section | |
4501 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
4502 | if (name == NULL || *name == '\0') | |
4503 | name = bfd_section_name (input_bfd, sec); | |
4504 | } | |
f21f3fe0 | 4505 | |
ba93b8ac DJ |
4506 | if (r_symndx != 0 |
4507 | && r_type != R_ARM_NONE | |
4508 | && (h == NULL | |
4509 | || h->root.type == bfd_link_hash_defined | |
4510 | || h->root.type == bfd_link_hash_defweak) | |
4511 | && IS_ARM_TLS_RELOC (r_type) != (sym_type == STT_TLS)) | |
4512 | { | |
4513 | (*_bfd_error_handler) | |
4514 | ((sym_type == STT_TLS | |
4515 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") | |
4516 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")), | |
4517 | input_bfd, | |
4518 | input_section, | |
4519 | (long) rel->r_offset, | |
4520 | howto->name, | |
4521 | name); | |
4522 | } | |
4523 | ||
252b5132 RH |
4524 | r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd, |
4525 | input_section, contents, rel, | |
4526 | relocation, info, sec, name, | |
4527 | (h ? ELF_ST_TYPE (h->type) : | |
0945cdfd DJ |
4528 | ELF_ST_TYPE (sym->st_info)), h, |
4529 | &unresolved_reloc); | |
4530 | ||
4531 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections | |
4532 | because such sections are not SEC_ALLOC and thus ld.so will | |
4533 | not process them. */ | |
4534 | if (unresolved_reloc | |
4535 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
4536 | && h->def_dynamic)) | |
4537 | { | |
4538 | (*_bfd_error_handler) | |
843fe662 L |
4539 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
4540 | input_bfd, | |
4541 | input_section, | |
4542 | (long) rel->r_offset, | |
4543 | howto->name, | |
4544 | h->root.root.string); | |
0945cdfd DJ |
4545 | return FALSE; |
4546 | } | |
252b5132 RH |
4547 | |
4548 | if (r != bfd_reloc_ok) | |
4549 | { | |
4550 | const char * msg = (const char *) 0; | |
4551 | ||
4552 | switch (r) | |
4553 | { | |
4554 | case bfd_reloc_overflow: | |
cf919dfd PB |
4555 | /* If the overflowing reloc was to an undefined symbol, |
4556 | we have already printed one error message and there | |
4557 | is no point complaining again. */ | |
4558 | if ((! h || | |
4559 | h->root.type != bfd_link_hash_undefined) | |
4560 | && (!((*info->callbacks->reloc_overflow) | |
dfeffb9f L |
4561 | (info, (h ? &h->root : NULL), name, howto->name, |
4562 | (bfd_vma) 0, input_bfd, input_section, | |
4563 | rel->r_offset)))) | |
b34976b6 | 4564 | return FALSE; |
252b5132 RH |
4565 | break; |
4566 | ||
4567 | case bfd_reloc_undefined: | |
4568 | if (!((*info->callbacks->undefined_symbol) | |
4569 | (info, name, input_bfd, input_section, | |
b34976b6 AM |
4570 | rel->r_offset, TRUE))) |
4571 | return FALSE; | |
252b5132 RH |
4572 | break; |
4573 | ||
4574 | case bfd_reloc_outofrange: | |
9b485d32 | 4575 | msg = _("internal error: out of range error"); |
252b5132 RH |
4576 | goto common_error; |
4577 | ||
4578 | case bfd_reloc_notsupported: | |
9b485d32 | 4579 | msg = _("internal error: unsupported relocation error"); |
252b5132 RH |
4580 | goto common_error; |
4581 | ||
4582 | case bfd_reloc_dangerous: | |
9b485d32 | 4583 | msg = _("internal error: dangerous error"); |
252b5132 RH |
4584 | goto common_error; |
4585 | ||
4586 | default: | |
9b485d32 | 4587 | msg = _("internal error: unknown error"); |
252b5132 RH |
4588 | /* fall through */ |
4589 | ||
4590 | common_error: | |
4591 | if (!((*info->callbacks->warning) | |
4592 | (info, msg, name, input_bfd, input_section, | |
4593 | rel->r_offset))) | |
b34976b6 | 4594 | return FALSE; |
252b5132 RH |
4595 | break; |
4596 | } | |
4597 | } | |
4598 | } | |
4599 | ||
b34976b6 | 4600 | return TRUE; |
252b5132 RH |
4601 | } |
4602 | ||
ee065d83 PB |
4603 | /* Allocate/find an object attribute. */ |
4604 | static aeabi_attribute * | |
4605 | elf32_arm_new_eabi_attr (bfd *abfd, int tag) | |
4606 | { | |
4607 | aeabi_attribute *attr; | |
4608 | aeabi_attribute_list *list; | |
4609 | aeabi_attribute_list *p; | |
4610 | aeabi_attribute_list **lastp; | |
4611 | ||
4612 | ||
4613 | if (tag < NUM_KNOWN_ATTRIBUTES) | |
4614 | { | |
4615 | /* Knwon tags are preallocated. */ | |
4616 | attr = &elf32_arm_tdata (abfd)->known_eabi_attributes[tag]; | |
4617 | } | |
4618 | else | |
4619 | { | |
4620 | /* Create a new tag. */ | |
4621 | list = (aeabi_attribute_list *) | |
4622 | bfd_alloc (abfd, sizeof (aeabi_attribute_list)); | |
4623 | memset (list, 0, sizeof (aeabi_attribute_list)); | |
4624 | list->tag = tag; | |
4625 | /* Keep the tag list in order. */ | |
4626 | lastp = &elf32_arm_tdata (abfd)->other_eabi_attributes; | |
4627 | for (p = *lastp; p; p = p->next) | |
4628 | { | |
4629 | if (tag < p->tag) | |
4630 | break; | |
4631 | lastp = &p->next; | |
4632 | } | |
4633 | list->next = *lastp; | |
4634 | *lastp = list; | |
4635 | attr = &list->attr; | |
4636 | } | |
4637 | ||
4638 | return attr; | |
4639 | } | |
4640 | ||
39b41c9c PB |
4641 | int |
4642 | elf32_arm_get_eabi_attr_int (bfd *abfd, int tag) | |
4643 | { | |
4644 | aeabi_attribute_list *p; | |
4645 | ||
4646 | if (tag < NUM_KNOWN_ATTRIBUTES) | |
4647 | { | |
4648 | /* Knwon tags are preallocated. */ | |
4649 | return elf32_arm_tdata (abfd)->known_eabi_attributes[tag].i; | |
4650 | } | |
4651 | else | |
4652 | { | |
4653 | for (p = elf32_arm_tdata (abfd)->other_eabi_attributes; | |
4654 | p; | |
4655 | p = p->next) | |
4656 | { | |
4657 | if (tag == p->tag) | |
4658 | return p->attr.i; | |
4659 | if (tag < p->tag) | |
4660 | break; | |
4661 | } | |
4662 | return 0; | |
4663 | } | |
4664 | } | |
4665 | ||
ee065d83 PB |
4666 | void |
4667 | elf32_arm_add_eabi_attr_int (bfd *abfd, int tag, unsigned int i) | |
4668 | { | |
4669 | aeabi_attribute *attr; | |
4670 | ||
4671 | attr = elf32_arm_new_eabi_attr (abfd, tag); | |
4672 | attr->type = 1; | |
4673 | attr->i = i; | |
4674 | } | |
4675 | ||
4676 | static char * | |
4677 | attr_strdup (bfd *abfd, const char * s) | |
4678 | { | |
4679 | char * p; | |
4680 | int len; | |
4681 | ||
4682 | len = strlen (s) + 1; | |
4683 | p = (char *)bfd_alloc(abfd, len); | |
4684 | return memcpy (p, s, len); | |
4685 | } | |
4686 | ||
4687 | void | |
4688 | elf32_arm_add_eabi_attr_string (bfd *abfd, int tag, const char *s) | |
4689 | { | |
4690 | aeabi_attribute *attr; | |
4691 | ||
4692 | attr = elf32_arm_new_eabi_attr (abfd, tag); | |
4693 | attr->type = 2; | |
4694 | attr->s = attr_strdup (abfd, s); | |
4695 | } | |
4696 | ||
4697 | void | |
4698 | elf32_arm_add_eabi_attr_compat (bfd *abfd, unsigned int i, const char *s) | |
4699 | { | |
4700 | aeabi_attribute_list *list; | |
4701 | aeabi_attribute_list *p; | |
4702 | aeabi_attribute_list **lastp; | |
4703 | ||
4704 | list = (aeabi_attribute_list *) | |
4705 | bfd_alloc (abfd, sizeof (aeabi_attribute_list)); | |
4706 | memset (list, 0, sizeof (aeabi_attribute_list)); | |
4707 | list->tag = Tag_compatibility; | |
4708 | list->attr.type = 3; | |
4709 | list->attr.i = i; | |
4710 | list->attr.s = attr_strdup (abfd, s); | |
4711 | ||
4712 | lastp = &elf32_arm_tdata (abfd)->other_eabi_attributes; | |
4713 | for (p = *lastp; p; p = p->next) | |
4714 | { | |
4715 | int cmp; | |
4716 | if (p->tag != Tag_compatibility) | |
4717 | break; | |
4718 | cmp = strcmp(s, p->attr.s); | |
4719 | if (cmp < 0 || (cmp == 0 && i < p->attr.i)) | |
4720 | break; | |
4721 | lastp = &p->next; | |
4722 | } | |
4723 | list->next = *lastp; | |
4724 | *lastp = list; | |
4725 | } | |
4726 | ||
c178919b NC |
4727 | /* Set the right machine number. */ |
4728 | ||
4729 | static bfd_boolean | |
57e8b36a | 4730 | elf32_arm_object_p (bfd *abfd) |
c178919b | 4731 | { |
5a6c6817 | 4732 | unsigned int mach; |
57e8b36a | 4733 | |
5a6c6817 | 4734 | mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION); |
c178919b | 4735 | |
5a6c6817 NC |
4736 | if (mach != bfd_mach_arm_unknown) |
4737 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach); | |
4738 | ||
4739 | else if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT) | |
4740 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_ep9312); | |
e16bb312 | 4741 | |
e16bb312 | 4742 | else |
5a6c6817 | 4743 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach); |
c178919b NC |
4744 | |
4745 | return TRUE; | |
4746 | } | |
4747 | ||
fc830a83 | 4748 | /* Function to keep ARM specific flags in the ELF header. */ |
3c9458e9 | 4749 | |
b34976b6 | 4750 | static bfd_boolean |
57e8b36a | 4751 | elf32_arm_set_private_flags (bfd *abfd, flagword flags) |
252b5132 RH |
4752 | { |
4753 | if (elf_flags_init (abfd) | |
4754 | && elf_elfheader (abfd)->e_flags != flags) | |
4755 | { | |
fc830a83 NC |
4756 | if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN) |
4757 | { | |
fd2ec330 | 4758 | if (flags & EF_ARM_INTERWORK) |
d003868e AM |
4759 | (*_bfd_error_handler) |
4760 | (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"), | |
4761 | abfd); | |
fc830a83 | 4762 | else |
d003868e AM |
4763 | _bfd_error_handler |
4764 | (_("Warning: Clearing the interworking flag of %B due to outside request"), | |
4765 | abfd); | |
fc830a83 | 4766 | } |
252b5132 RH |
4767 | } |
4768 | else | |
4769 | { | |
4770 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 | 4771 | elf_flags_init (abfd) = TRUE; |
252b5132 RH |
4772 | } |
4773 | ||
b34976b6 | 4774 | return TRUE; |
252b5132 RH |
4775 | } |
4776 | ||
ee065d83 PB |
4777 | /* Copy the eabi object attribute from IBFD to OBFD. */ |
4778 | static void | |
4779 | copy_eabi_attributes (bfd *ibfd, bfd *obfd) | |
4780 | { | |
4781 | aeabi_attribute *in_attr; | |
4782 | aeabi_attribute *out_attr; | |
4783 | aeabi_attribute_list *list; | |
4784 | int i; | |
4785 | ||
4786 | in_attr = elf32_arm_tdata (ibfd)->known_eabi_attributes; | |
4787 | out_attr = elf32_arm_tdata (obfd)->known_eabi_attributes; | |
4788 | for (i = 4; i < NUM_KNOWN_ATTRIBUTES; i++) | |
4789 | { | |
4790 | out_attr->i = in_attr->i; | |
4791 | if (in_attr->s && *in_attr->s) | |
4792 | out_attr->s = attr_strdup (obfd, in_attr->s); | |
4793 | in_attr++; | |
4794 | out_attr++; | |
4795 | } | |
4796 | ||
4797 | for (list = elf32_arm_tdata (ibfd)->other_eabi_attributes; | |
4798 | list; | |
4799 | list = list->next) | |
4800 | { | |
4801 | in_attr = &list->attr; | |
4802 | switch (in_attr->type) | |
4803 | { | |
4804 | case 1: | |
4805 | elf32_arm_add_eabi_attr_int (obfd, list->tag, in_attr->i); | |
4806 | break; | |
4807 | case 2: | |
4808 | elf32_arm_add_eabi_attr_string (obfd, list->tag, in_attr->s); | |
4809 | break; | |
4810 | case 3: | |
4811 | elf32_arm_add_eabi_attr_compat (obfd, in_attr->i, in_attr->s); | |
4812 | break; | |
4813 | default: | |
4814 | abort(); | |
4815 | } | |
4816 | } | |
4817 | } | |
4818 | ||
4819 | ||
fc830a83 | 4820 | /* Copy backend specific data from one object module to another. */ |
9b485d32 | 4821 | |
b34976b6 | 4822 | static bfd_boolean |
57e8b36a | 4823 | elf32_arm_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
252b5132 RH |
4824 | { |
4825 | flagword in_flags; | |
4826 | flagword out_flags; | |
4827 | ||
fc830a83 | 4828 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
252b5132 | 4829 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
b34976b6 | 4830 | return TRUE; |
252b5132 | 4831 | |
fc830a83 | 4832 | in_flags = elf_elfheader (ibfd)->e_flags; |
252b5132 RH |
4833 | out_flags = elf_elfheader (obfd)->e_flags; |
4834 | ||
fc830a83 NC |
4835 | if (elf_flags_init (obfd) |
4836 | && EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN | |
4837 | && in_flags != out_flags) | |
252b5132 | 4838 | { |
252b5132 | 4839 | /* Cannot mix APCS26 and APCS32 code. */ |
fd2ec330 | 4840 | if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26)) |
b34976b6 | 4841 | return FALSE; |
252b5132 RH |
4842 | |
4843 | /* Cannot mix float APCS and non-float APCS code. */ | |
fd2ec330 | 4844 | if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT)) |
b34976b6 | 4845 | return FALSE; |
252b5132 RH |
4846 | |
4847 | /* If the src and dest have different interworking flags | |
4848 | then turn off the interworking bit. */ | |
fd2ec330 | 4849 | if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK)) |
252b5132 | 4850 | { |
fd2ec330 | 4851 | if (out_flags & EF_ARM_INTERWORK) |
d003868e AM |
4852 | _bfd_error_handler |
4853 | (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"), | |
4854 | obfd, ibfd); | |
252b5132 | 4855 | |
fd2ec330 | 4856 | in_flags &= ~EF_ARM_INTERWORK; |
252b5132 | 4857 | } |
1006ba19 PB |
4858 | |
4859 | /* Likewise for PIC, though don't warn for this case. */ | |
fd2ec330 PB |
4860 | if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC)) |
4861 | in_flags &= ~EF_ARM_PIC; | |
252b5132 RH |
4862 | } |
4863 | ||
4864 | elf_elfheader (obfd)->e_flags = in_flags; | |
b34976b6 | 4865 | elf_flags_init (obfd) = TRUE; |
252b5132 | 4866 | |
94a3258f PB |
4867 | /* Also copy the EI_OSABI field. */ |
4868 | elf_elfheader (obfd)->e_ident[EI_OSABI] = | |
4869 | elf_elfheader (ibfd)->e_ident[EI_OSABI]; | |
4870 | ||
ee065d83 PB |
4871 | /* Copy EABI object attributes. */ |
4872 | copy_eabi_attributes (ibfd, obfd); | |
4873 | ||
4874 | return TRUE; | |
4875 | } | |
4876 | ||
4877 | /* Values for Tag_ABI_PCS_R9_use. */ | |
4878 | enum | |
4879 | { | |
4880 | AEABI_R9_V6, | |
4881 | AEABI_R9_SB, | |
4882 | AEABI_R9_TLS, | |
4883 | AEABI_R9_unused | |
4884 | }; | |
4885 | ||
4886 | /* Values for Tag_ABI_PCS_RW_data. */ | |
4887 | enum | |
4888 | { | |
4889 | AEABI_PCS_RW_data_absolute, | |
4890 | AEABI_PCS_RW_data_PCrel, | |
4891 | AEABI_PCS_RW_data_SBrel, | |
4892 | AEABI_PCS_RW_data_unused | |
4893 | }; | |
4894 | ||
4895 | /* Values for Tag_ABI_enum_size. */ | |
4896 | enum | |
4897 | { | |
4898 | AEABI_enum_unused, | |
4899 | AEABI_enum_short, | |
4900 | AEABI_enum_wide, | |
4901 | AEABI_enum_forced_wide | |
4902 | }; | |
4903 | ||
4904 | /* Merge EABI object attributes from IBFD into OBFD. Raise an error if there | |
4905 | are conflicting attributes. */ | |
4906 | static bfd_boolean | |
4907 | elf32_arm_merge_eabi_attributes (bfd *ibfd, bfd *obfd) | |
4908 | { | |
4909 | aeabi_attribute *in_attr; | |
4910 | aeabi_attribute *out_attr; | |
4911 | aeabi_attribute_list *in_list; | |
4912 | aeabi_attribute_list *out_list; | |
4913 | /* Some tags have 0 = don't care, 1 = strong requirement, | |
4914 | 2 = weak requirement. */ | |
4915 | static const int order_312[3] = {3, 1, 2}; | |
4916 | int i; | |
4917 | ||
4918 | if (!elf32_arm_tdata (ibfd)->known_eabi_attributes[0].i) | |
4919 | { | |
4920 | /* This is the first object. Copy the attributes. */ | |
4921 | copy_eabi_attributes (ibfd, obfd); | |
4922 | return TRUE; | |
4923 | } | |
4924 | ||
4925 | /* Use the Tag_null value to indicate the attributes have been | |
4926 | initialized. */ | |
4927 | elf32_arm_tdata (ibfd)->known_eabi_attributes[0].i = 1; | |
4928 | ||
4929 | in_attr = elf32_arm_tdata (ibfd)->known_eabi_attributes; | |
4930 | out_attr = elf32_arm_tdata (obfd)->known_eabi_attributes; | |
4931 | /* This needs to happen before Tag_ABI_FP_number_model is merged. */ | |
4932 | if (in_attr[Tag_ABI_VFP_args].i != out_attr[Tag_ABI_VFP_args].i) | |
4933 | { | |
4934 | /* Ignore mismatches if teh object doesn't use floating point. */ | |
4935 | if (out_attr[Tag_ABI_FP_number_model].i == 0) | |
4936 | out_attr[Tag_ABI_VFP_args].i = in_attr[Tag_ABI_VFP_args].i; | |
4937 | else if (in_attr[Tag_ABI_FP_number_model].i != 0) | |
4938 | { | |
4939 | _bfd_error_handler | |
4940 | (_("ERROR: %B uses VFP register arguments, %B does not"), | |
4941 | ibfd, obfd); | |
4942 | return FALSE; | |
4943 | } | |
4944 | } | |
4945 | ||
4946 | for (i = 4; i < NUM_KNOWN_ATTRIBUTES; i++) | |
4947 | { | |
4948 | /* Merge this attribute with existing attributes. */ | |
4949 | switch (i) | |
4950 | { | |
4951 | case Tag_CPU_raw_name: | |
4952 | case Tag_CPU_name: | |
4953 | /* Use whichever has the greatest architecture requirements. */ | |
4954 | if (in_attr[Tag_CPU_arch].i > out_attr[Tag_CPU_arch].i) | |
4955 | out_attr[i].s = attr_strdup(obfd, in_attr[i].s); | |
4956 | break; | |
4957 | ||
4958 | case Tag_ABI_optimization_goals: | |
4959 | case Tag_ABI_FP_optimization_goals: | |
4960 | /* Use the first value seen. */ | |
4961 | break; | |
4962 | ||
4963 | case Tag_CPU_arch: | |
4964 | case Tag_ARM_ISA_use: | |
4965 | case Tag_THUMB_ISA_use: | |
4966 | case Tag_VFP_arch: | |
4967 | case Tag_WMMX_arch: | |
4968 | case Tag_NEON_arch: | |
4969 | /* ??? Do NEON and WMMX conflict? */ | |
4970 | case Tag_ABI_FP_rounding: | |
4971 | case Tag_ABI_FP_denormal: | |
4972 | case Tag_ABI_FP_exceptions: | |
4973 | case Tag_ABI_FP_user_exceptions: | |
4974 | case Tag_ABI_FP_number_model: | |
4975 | case Tag_ABI_align8_preserved: | |
4976 | case Tag_ABI_HardFP_use: | |
4977 | /* Use the largest value specified. */ | |
4978 | if (in_attr[i].i > out_attr[i].i) | |
4979 | out_attr[i].i = in_attr[i].i; | |
4980 | break; | |
4981 | ||
4982 | case Tag_CPU_arch_profile: | |
4983 | /* Warn if conflicting architecture profiles used. */ | |
4984 | if (out_attr[i].i && in_attr[i].i && in_attr[i].i != out_attr[i].i) | |
4985 | { | |
4986 | _bfd_error_handler | |
4987 | (_("ERROR: %B: Conflicting architecture profiles %c/%c"), | |
4988 | ibfd, in_attr[i].i, out_attr[i].i); | |
4989 | return FALSE; | |
4990 | } | |
4991 | if (in_attr[i].i) | |
4992 | out_attr[i].i = in_attr[i].i; | |
4993 | break; | |
4994 | case Tag_PCS_config: | |
4995 | if (out_attr[i].i == 0) | |
4996 | out_attr[i].i = in_attr[i].i; | |
4997 | else if (in_attr[i].i != 0 && out_attr[i].i != 0) | |
4998 | { | |
4999 | /* It's sometimes ok to mix different configs, so this is only | |
5000 | a warning. */ | |
5001 | _bfd_error_handler | |
5002 | (_("Warning: %B: Conflicting platform configuration"), ibfd); | |
5003 | } | |
5004 | break; | |
5005 | case Tag_ABI_PCS_R9_use: | |
5006 | if (out_attr[i].i != AEABI_R9_unused | |
5007 | && in_attr[i].i != AEABI_R9_unused) | |
5008 | { | |
5009 | _bfd_error_handler | |
5010 | (_("ERROR: %B: Conflicting use of R9"), ibfd); | |
5011 | return FALSE; | |
5012 | } | |
5013 | if (out_attr[i].i == AEABI_R9_unused) | |
5014 | out_attr[i].i = in_attr[i].i; | |
5015 | break; | |
5016 | case Tag_ABI_PCS_RW_data: | |
5017 | if (in_attr[i].i == AEABI_PCS_RW_data_SBrel | |
5018 | && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_SB | |
5019 | && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_unused) | |
5020 | { | |
5021 | _bfd_error_handler | |
5022 | (_("ERROR: %B: SB relative addressing conflicts with use of R9"), | |
5023 | ibfd); | |
5024 | return FALSE; | |
5025 | } | |
5026 | /* Use the smallest value specified. */ | |
5027 | if (in_attr[i].i < out_attr[i].i) | |
5028 | out_attr[i].i = in_attr[i].i; | |
5029 | break; | |
5030 | case Tag_ABI_PCS_RO_data: | |
5031 | /* Use the smallest value specified. */ | |
5032 | if (in_attr[i].i < out_attr[i].i) | |
5033 | out_attr[i].i = in_attr[i].i; | |
5034 | break; | |
5035 | case Tag_ABI_PCS_GOT_use: | |
5036 | if (in_attr[i].i > 2 || out_attr[i].i > 2 | |
5037 | || order_312[in_attr[i].i] < order_312[out_attr[i].i]) | |
5038 | out_attr[i].i = in_attr[i].i; | |
5039 | break; | |
5040 | case Tag_ABI_PCS_wchar_t: | |
5041 | if (out_attr[i].i && in_attr[i].i && out_attr[i].i != in_attr[i].i) | |
5042 | { | |
5043 | _bfd_error_handler | |
5044 | (_("ERROR: %B: Conflicting definitions of wchar_t"), ibfd); | |
5045 | return FALSE; | |
5046 | } | |
5047 | if (in_attr[i].i) | |
5048 | out_attr[i].i = in_attr[i].i; | |
5049 | break; | |
5050 | case Tag_ABI_align8_needed: | |
5051 | /* ??? Check against Tag_ABI_align8_preserved. */ | |
5052 | if (in_attr[i].i > 2 || out_attr[i].i > 2 | |
5053 | || order_312[in_attr[i].i] < order_312[out_attr[i].i]) | |
5054 | out_attr[i].i = in_attr[i].i; | |
5055 | break; | |
5056 | case Tag_ABI_enum_size: | |
5057 | if (in_attr[i].i != AEABI_enum_unused) | |
5058 | { | |
5059 | if (out_attr[i].i == AEABI_enum_unused | |
5060 | || out_attr[i].i == AEABI_enum_forced_wide) | |
5061 | { | |
5062 | /* The existing object is compatible with anything. | |
5063 | Use whatever requirements the new object has. */ | |
5064 | out_attr[i].i = in_attr[i].i; | |
5065 | } | |
5066 | else if (in_attr[i].i != AEABI_enum_forced_wide | |
5067 | && out_attr[i].i != in_attr[i].i) | |
5068 | { | |
5069 | _bfd_error_handler | |
5070 | (_("ERROR: %B: Conflicting enum sizes"), ibfd); | |
5071 | } | |
5072 | } | |
5073 | break; | |
5074 | case Tag_ABI_VFP_args: | |
5075 | /* Aready done. */ | |
5076 | break; | |
5077 | case Tag_ABI_WMMX_args: | |
5078 | if (in_attr[i].i != out_attr[i].i) | |
5079 | { | |
5080 | _bfd_error_handler | |
5081 | (_("ERROR: %B uses iWMMXt register arguments, %B does not"), | |
5082 | ibfd, obfd); | |
5083 | return FALSE; | |
5084 | } | |
5085 | break; | |
5086 | default: /* All known attributes should be explicitly covered. */ | |
5087 | abort (); | |
5088 | } | |
5089 | } | |
5090 | ||
5091 | in_list = elf32_arm_tdata (ibfd)->other_eabi_attributes; | |
5092 | out_list = elf32_arm_tdata (ibfd)->other_eabi_attributes; | |
5093 | while (in_list && in_list->tag == Tag_compatibility) | |
5094 | { | |
5095 | in_attr = &in_list->attr; | |
5096 | if (in_attr->i == 0) | |
5097 | continue; | |
5098 | if (in_attr->i == 1) | |
5099 | { | |
5100 | _bfd_error_handler | |
5101 | (_("ERROR: %B: Must be processed by '%s' toolchain"), | |
5102 | ibfd, in_attr->s); | |
5103 | return FALSE; | |
5104 | } | |
5105 | if (!out_list || out_list->tag != Tag_compatibility | |
5106 | || strcmp (in_attr->s, out_list->attr.s) != 0) | |
5107 | { | |
5108 | /* Add this compatibility tag to the output. */ | |
5109 | elf32_arm_add_eabi_attr_compat (obfd, in_attr->i, in_attr->s); | |
5110 | continue; | |
5111 | } | |
5112 | out_attr = &out_list->attr; | |
5113 | /* Check all the input tags with the same identifier. */ | |
5114 | for (;;) | |
5115 | { | |
5116 | if (out_list->tag != Tag_compatibility | |
5117 | || in_attr->i != out_attr->i | |
5118 | || strcmp (in_attr->s, out_attr->s) != 0) | |
5119 | { | |
5120 | _bfd_error_handler | |
5121 | (_("ERROR: %B: Incompatible object tag '%s':%d"), | |
5122 | ibfd, in_attr->s, in_attr->i); | |
5123 | return FALSE; | |
5124 | } | |
5125 | in_list = in_list->next; | |
5126 | if (in_list->tag != Tag_compatibility | |
5127 | || strcmp (in_attr->s, in_list->attr.s) != 0) | |
5128 | break; | |
5129 | in_attr = &in_list->attr; | |
5130 | out_list = out_list->next; | |
5131 | if (out_list) | |
5132 | out_attr = &out_list->attr; | |
5133 | } | |
5134 | ||
5135 | /* Check the output doesn't have extra tags with this identifier. */ | |
5136 | if (out_list && out_list->tag == Tag_compatibility | |
5137 | && strcmp (in_attr->s, out_list->attr.s) == 0) | |
5138 | { | |
5139 | _bfd_error_handler | |
5140 | (_("ERROR: %B: Incompatible object tag '%s':%d"), | |
5141 | ibfd, in_attr->s, out_list->attr.i); | |
5142 | return FALSE; | |
5143 | } | |
5144 | } | |
5145 | ||
5146 | for (; in_list; in_list = in_list->next) | |
5147 | { | |
5148 | if ((in_list->tag & 128) < 64) | |
5149 | _bfd_error_handler | |
5150 | (_("Warning: %B: Unknown EABI object attribute %d"), | |
5151 | ibfd, in_list->tag); | |
5152 | break; | |
5153 | } | |
b34976b6 | 5154 | return TRUE; |
252b5132 RH |
5155 | } |
5156 | ||
3a4a14e9 PB |
5157 | |
5158 | /* Return TRUE if the two EABI versions are incompatible. */ | |
5159 | ||
5160 | static bfd_boolean | |
5161 | elf32_arm_versions_compatible (unsigned iver, unsigned over) | |
5162 | { | |
5163 | /* v4 and v5 are the same spec before and after it was released, | |
5164 | so allow mixing them. */ | |
5165 | if ((iver == EF_ARM_EABI_VER4 && over == EF_ARM_EABI_VER5) | |
5166 | || (iver == EF_ARM_EABI_VER5 && over == EF_ARM_EABI_VER4)) | |
5167 | return TRUE; | |
5168 | ||
5169 | return (iver == over); | |
5170 | } | |
5171 | ||
252b5132 RH |
5172 | /* Merge backend specific data from an object file to the output |
5173 | object file when linking. */ | |
9b485d32 | 5174 | |
b34976b6 | 5175 | static bfd_boolean |
57e8b36a | 5176 | elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd) |
252b5132 RH |
5177 | { |
5178 | flagword out_flags; | |
5179 | flagword in_flags; | |
b34976b6 | 5180 | bfd_boolean flags_compatible = TRUE; |
cf919dfd | 5181 | asection *sec; |
252b5132 | 5182 | |
9b485d32 | 5183 | /* Check if we have the same endianess. */ |
82e51918 | 5184 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) |
b34976b6 | 5185 | return FALSE; |
1fe494a5 | 5186 | |
252b5132 RH |
5187 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
5188 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 5189 | return TRUE; |
252b5132 | 5190 | |
ee065d83 PB |
5191 | if (!elf32_arm_merge_eabi_attributes (ibfd, obfd)) |
5192 | return FALSE; | |
5193 | ||
252b5132 RH |
5194 | /* The input BFD must have had its flags initialised. */ |
5195 | /* The following seems bogus to me -- The flags are initialized in | |
5196 | the assembler but I don't think an elf_flags_init field is | |
9b485d32 | 5197 | written into the object. */ |
252b5132 RH |
5198 | /* BFD_ASSERT (elf_flags_init (ibfd)); */ |
5199 | ||
5200 | in_flags = elf_elfheader (ibfd)->e_flags; | |
5201 | out_flags = elf_elfheader (obfd)->e_flags; | |
5202 | ||
5203 | if (!elf_flags_init (obfd)) | |
5204 | { | |
fe077fa6 NC |
5205 | /* If the input is the default architecture and had the default |
5206 | flags then do not bother setting the flags for the output | |
5207 | architecture, instead allow future merges to do this. If no | |
5208 | future merges ever set these flags then they will retain their | |
5209 | uninitialised values, which surprise surprise, correspond | |
252b5132 | 5210 | to the default values. */ |
fe077fa6 NC |
5211 | if (bfd_get_arch_info (ibfd)->the_default |
5212 | && elf_elfheader (ibfd)->e_flags == 0) | |
b34976b6 | 5213 | return TRUE; |
252b5132 | 5214 | |
b34976b6 | 5215 | elf_flags_init (obfd) = TRUE; |
252b5132 RH |
5216 | elf_elfheader (obfd)->e_flags = in_flags; |
5217 | ||
5218 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
5219 | && bfd_get_arch_info (obfd)->the_default) | |
5220 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); | |
5221 | ||
b34976b6 | 5222 | return TRUE; |
252b5132 RH |
5223 | } |
5224 | ||
5a6c6817 NC |
5225 | /* Determine what should happen if the input ARM architecture |
5226 | does not match the output ARM architecture. */ | |
5227 | if (! bfd_arm_merge_machines (ibfd, obfd)) | |
5228 | return FALSE; | |
e16bb312 | 5229 | |
1006ba19 | 5230 | /* Identical flags must be compatible. */ |
252b5132 | 5231 | if (in_flags == out_flags) |
b34976b6 | 5232 | return TRUE; |
252b5132 | 5233 | |
35a0f415 DJ |
5234 | /* Check to see if the input BFD actually contains any sections. If |
5235 | not, its flags may not have been initialised either, but it | |
8e3de13a | 5236 | cannot actually cause any incompatiblity. Do not short-circuit |
35a0f415 | 5237 | dynamic objects; their section list may be emptied by |
d1f161ea | 5238 | elf_link_add_object_symbols. |
35a0f415 | 5239 | |
d1f161ea NC |
5240 | Also check to see if there are no code sections in the input. |
5241 | In this case there is no need to check for code specific flags. | |
5242 | XXX - do we need to worry about floating-point format compatability | |
5243 | in data sections ? */ | |
35a0f415 | 5244 | if (!(ibfd->flags & DYNAMIC)) |
cf919dfd | 5245 | { |
35a0f415 | 5246 | bfd_boolean null_input_bfd = TRUE; |
d1f161ea | 5247 | bfd_boolean only_data_sections = TRUE; |
35a0f415 DJ |
5248 | |
5249 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
cf919dfd | 5250 | { |
35a0f415 DJ |
5251 | /* Ignore synthetic glue sections. */ |
5252 | if (strcmp (sec->name, ".glue_7") | |
5253 | && strcmp (sec->name, ".glue_7t")) | |
5254 | { | |
d1f161ea NC |
5255 | if ((bfd_get_section_flags (ibfd, sec) |
5256 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
5257 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
5258 | only_data_sections = FALSE; | |
5259 | ||
35a0f415 DJ |
5260 | null_input_bfd = FALSE; |
5261 | break; | |
5262 | } | |
cf919dfd | 5263 | } |
d1f161ea NC |
5264 | |
5265 | if (null_input_bfd || only_data_sections) | |
35a0f415 | 5266 | return TRUE; |
cf919dfd | 5267 | } |
cf919dfd | 5268 | |
252b5132 | 5269 | /* Complain about various flag mismatches. */ |
3a4a14e9 PB |
5270 | if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags), |
5271 | EF_ARM_EABI_VERSION (out_flags))) | |
fc830a83 | 5272 | { |
d003868e | 5273 | _bfd_error_handler |
3656d5e3 | 5274 | (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"), |
d003868e AM |
5275 | ibfd, obfd, |
5276 | (in_flags & EF_ARM_EABIMASK) >> 24, | |
5277 | (out_flags & EF_ARM_EABIMASK) >> 24); | |
b34976b6 | 5278 | return FALSE; |
fc830a83 | 5279 | } |
252b5132 | 5280 | |
1006ba19 | 5281 | /* Not sure what needs to be checked for EABI versions >= 1. */ |
00a97672 RS |
5282 | /* VxWorks libraries do not use these flags. */ |
5283 | if (get_elf_backend_data (obfd) != &elf32_arm_vxworks_bed | |
5284 | && get_elf_backend_data (ibfd) != &elf32_arm_vxworks_bed | |
5285 | && EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN) | |
1006ba19 | 5286 | { |
fd2ec330 | 5287 | if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26)) |
1006ba19 | 5288 | { |
d003868e AM |
5289 | _bfd_error_handler |
5290 | (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"), | |
5291 | ibfd, obfd, | |
5292 | in_flags & EF_ARM_APCS_26 ? 26 : 32, | |
5293 | out_flags & EF_ARM_APCS_26 ? 26 : 32); | |
b34976b6 | 5294 | flags_compatible = FALSE; |
1006ba19 | 5295 | } |
252b5132 | 5296 | |
fd2ec330 | 5297 | if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT)) |
1006ba19 | 5298 | { |
5eefb65f | 5299 | if (in_flags & EF_ARM_APCS_FLOAT) |
d003868e AM |
5300 | _bfd_error_handler |
5301 | (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"), | |
5302 | ibfd, obfd); | |
5eefb65f | 5303 | else |
d003868e AM |
5304 | _bfd_error_handler |
5305 | (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"), | |
5306 | ibfd, obfd); | |
63b0f745 | 5307 | |
b34976b6 | 5308 | flags_compatible = FALSE; |
1006ba19 | 5309 | } |
252b5132 | 5310 | |
96a846ea | 5311 | if ((in_flags & EF_ARM_VFP_FLOAT) != (out_flags & EF_ARM_VFP_FLOAT)) |
1006ba19 | 5312 | { |
96a846ea | 5313 | if (in_flags & EF_ARM_VFP_FLOAT) |
d003868e AM |
5314 | _bfd_error_handler |
5315 | (_("ERROR: %B uses VFP instructions, whereas %B does not"), | |
5316 | ibfd, obfd); | |
5eefb65f | 5317 | else |
d003868e AM |
5318 | _bfd_error_handler |
5319 | (_("ERROR: %B uses FPA instructions, whereas %B does not"), | |
5320 | ibfd, obfd); | |
fde78edd NC |
5321 | |
5322 | flags_compatible = FALSE; | |
5323 | } | |
5324 | ||
5325 | if ((in_flags & EF_ARM_MAVERICK_FLOAT) != (out_flags & EF_ARM_MAVERICK_FLOAT)) | |
5326 | { | |
5327 | if (in_flags & EF_ARM_MAVERICK_FLOAT) | |
d003868e AM |
5328 | _bfd_error_handler |
5329 | (_("ERROR: %B uses Maverick instructions, whereas %B does not"), | |
5330 | ibfd, obfd); | |
fde78edd | 5331 | else |
d003868e AM |
5332 | _bfd_error_handler |
5333 | (_("ERROR: %B does not use Maverick instructions, whereas %B does"), | |
5334 | ibfd, obfd); | |
63b0f745 | 5335 | |
b34976b6 | 5336 | flags_compatible = FALSE; |
1006ba19 | 5337 | } |
96a846ea RE |
5338 | |
5339 | #ifdef EF_ARM_SOFT_FLOAT | |
5340 | if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT)) | |
5341 | { | |
5342 | /* We can allow interworking between code that is VFP format | |
5343 | layout, and uses either soft float or integer regs for | |
5344 | passing floating point arguments and results. We already | |
5345 | know that the APCS_FLOAT flags match; similarly for VFP | |
5346 | flags. */ | |
5347 | if ((in_flags & EF_ARM_APCS_FLOAT) != 0 | |
5348 | || (in_flags & EF_ARM_VFP_FLOAT) == 0) | |
5349 | { | |
5350 | if (in_flags & EF_ARM_SOFT_FLOAT) | |
d003868e AM |
5351 | _bfd_error_handler |
5352 | (_("ERROR: %B uses software FP, whereas %B uses hardware FP"), | |
5353 | ibfd, obfd); | |
96a846ea | 5354 | else |
d003868e AM |
5355 | _bfd_error_handler |
5356 | (_("ERROR: %B uses hardware FP, whereas %B uses software FP"), | |
5357 | ibfd, obfd); | |
96a846ea | 5358 | |
b34976b6 | 5359 | flags_compatible = FALSE; |
96a846ea RE |
5360 | } |
5361 | } | |
ee43f35e | 5362 | #endif |
252b5132 | 5363 | |
1006ba19 | 5364 | /* Interworking mismatch is only a warning. */ |
fd2ec330 | 5365 | if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK)) |
8f615d07 | 5366 | { |
e3c8793a NC |
5367 | if (in_flags & EF_ARM_INTERWORK) |
5368 | { | |
d003868e AM |
5369 | _bfd_error_handler |
5370 | (_("Warning: %B supports interworking, whereas %B does not"), | |
5371 | ibfd, obfd); | |
e3c8793a NC |
5372 | } |
5373 | else | |
5374 | { | |
d003868e AM |
5375 | _bfd_error_handler |
5376 | (_("Warning: %B does not support interworking, whereas %B does"), | |
5377 | ibfd, obfd); | |
e3c8793a | 5378 | } |
8f615d07 | 5379 | } |
252b5132 | 5380 | } |
63b0f745 | 5381 | |
1006ba19 | 5382 | return flags_compatible; |
252b5132 RH |
5383 | } |
5384 | ||
9b485d32 NC |
5385 | /* Display the flags field. */ |
5386 | ||
b34976b6 | 5387 | static bfd_boolean |
57e8b36a | 5388 | elf32_arm_print_private_bfd_data (bfd *abfd, void * ptr) |
252b5132 | 5389 | { |
fc830a83 NC |
5390 | FILE * file = (FILE *) ptr; |
5391 | unsigned long flags; | |
252b5132 RH |
5392 | |
5393 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
5394 | ||
5395 | /* Print normal ELF private data. */ | |
5396 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
5397 | ||
fc830a83 | 5398 | flags = elf_elfheader (abfd)->e_flags; |
9b485d32 NC |
5399 | /* Ignore init flag - it may not be set, despite the flags field |
5400 | containing valid data. */ | |
252b5132 RH |
5401 | |
5402 | /* xgettext:c-format */ | |
9b485d32 | 5403 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); |
252b5132 | 5404 | |
fc830a83 NC |
5405 | switch (EF_ARM_EABI_VERSION (flags)) |
5406 | { | |
5407 | case EF_ARM_EABI_UNKNOWN: | |
4cc11e76 | 5408 | /* The following flag bits are GNU extensions and not part of the |
fc830a83 NC |
5409 | official ARM ELF extended ABI. Hence they are only decoded if |
5410 | the EABI version is not set. */ | |
fd2ec330 | 5411 | if (flags & EF_ARM_INTERWORK) |
9b485d32 | 5412 | fprintf (file, _(" [interworking enabled]")); |
9a5aca8c | 5413 | |
fd2ec330 | 5414 | if (flags & EF_ARM_APCS_26) |
6c571f00 | 5415 | fprintf (file, " [APCS-26]"); |
fc830a83 | 5416 | else |
6c571f00 | 5417 | fprintf (file, " [APCS-32]"); |
9a5aca8c | 5418 | |
96a846ea RE |
5419 | if (flags & EF_ARM_VFP_FLOAT) |
5420 | fprintf (file, _(" [VFP float format]")); | |
fde78edd NC |
5421 | else if (flags & EF_ARM_MAVERICK_FLOAT) |
5422 | fprintf (file, _(" [Maverick float format]")); | |
96a846ea RE |
5423 | else |
5424 | fprintf (file, _(" [FPA float format]")); | |
5425 | ||
fd2ec330 | 5426 | if (flags & EF_ARM_APCS_FLOAT) |
9b485d32 | 5427 | fprintf (file, _(" [floats passed in float registers]")); |
9a5aca8c | 5428 | |
fd2ec330 | 5429 | if (flags & EF_ARM_PIC) |
9b485d32 | 5430 | fprintf (file, _(" [position independent]")); |
fc830a83 | 5431 | |
fd2ec330 | 5432 | if (flags & EF_ARM_NEW_ABI) |
9b485d32 | 5433 | fprintf (file, _(" [new ABI]")); |
9a5aca8c | 5434 | |
fd2ec330 | 5435 | if (flags & EF_ARM_OLD_ABI) |
9b485d32 | 5436 | fprintf (file, _(" [old ABI]")); |
9a5aca8c | 5437 | |
fd2ec330 | 5438 | if (flags & EF_ARM_SOFT_FLOAT) |
9b485d32 | 5439 | fprintf (file, _(" [software FP]")); |
9a5aca8c | 5440 | |
96a846ea RE |
5441 | flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT |
5442 | | EF_ARM_PIC | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI | |
fde78edd NC |
5443 | | EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT |
5444 | | EF_ARM_MAVERICK_FLOAT); | |
fc830a83 | 5445 | break; |
9a5aca8c | 5446 | |
fc830a83 | 5447 | case EF_ARM_EABI_VER1: |
9b485d32 | 5448 | fprintf (file, _(" [Version1 EABI]")); |
9a5aca8c | 5449 | |
fc830a83 | 5450 | if (flags & EF_ARM_SYMSARESORTED) |
9b485d32 | 5451 | fprintf (file, _(" [sorted symbol table]")); |
fc830a83 | 5452 | else |
9b485d32 | 5453 | fprintf (file, _(" [unsorted symbol table]")); |
9a5aca8c | 5454 | |
fc830a83 NC |
5455 | flags &= ~ EF_ARM_SYMSARESORTED; |
5456 | break; | |
9a5aca8c | 5457 | |
fd2ec330 PB |
5458 | case EF_ARM_EABI_VER2: |
5459 | fprintf (file, _(" [Version2 EABI]")); | |
5460 | ||
5461 | if (flags & EF_ARM_SYMSARESORTED) | |
5462 | fprintf (file, _(" [sorted symbol table]")); | |
5463 | else | |
5464 | fprintf (file, _(" [unsorted symbol table]")); | |
5465 | ||
5466 | if (flags & EF_ARM_DYNSYMSUSESEGIDX) | |
5467 | fprintf (file, _(" [dynamic symbols use segment index]")); | |
5468 | ||
5469 | if (flags & EF_ARM_MAPSYMSFIRST) | |
5470 | fprintf (file, _(" [mapping symbols precede others]")); | |
5471 | ||
99e4ae17 | 5472 | flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX |
fd2ec330 PB |
5473 | | EF_ARM_MAPSYMSFIRST); |
5474 | break; | |
5475 | ||
d507cf36 PB |
5476 | case EF_ARM_EABI_VER3: |
5477 | fprintf (file, _(" [Version3 EABI]")); | |
8cb51566 PB |
5478 | break; |
5479 | ||
5480 | case EF_ARM_EABI_VER4: | |
5481 | fprintf (file, _(" [Version4 EABI]")); | |
3a4a14e9 | 5482 | goto eabi; |
d507cf36 | 5483 | |
3a4a14e9 PB |
5484 | case EF_ARM_EABI_VER5: |
5485 | fprintf (file, _(" [Version5 EABI]")); | |
5486 | eabi: | |
d507cf36 PB |
5487 | if (flags & EF_ARM_BE8) |
5488 | fprintf (file, _(" [BE8]")); | |
5489 | ||
5490 | if (flags & EF_ARM_LE8) | |
5491 | fprintf (file, _(" [LE8]")); | |
5492 | ||
5493 | flags &= ~(EF_ARM_LE8 | EF_ARM_BE8); | |
5494 | break; | |
5495 | ||
fc830a83 | 5496 | default: |
9b485d32 | 5497 | fprintf (file, _(" <EABI version unrecognised>")); |
fc830a83 NC |
5498 | break; |
5499 | } | |
252b5132 | 5500 | |
fc830a83 | 5501 | flags &= ~ EF_ARM_EABIMASK; |
252b5132 | 5502 | |
fc830a83 | 5503 | if (flags & EF_ARM_RELEXEC) |
9b485d32 | 5504 | fprintf (file, _(" [relocatable executable]")); |
252b5132 | 5505 | |
fc830a83 | 5506 | if (flags & EF_ARM_HASENTRY) |
9b485d32 | 5507 | fprintf (file, _(" [has entry point]")); |
252b5132 | 5508 | |
fc830a83 NC |
5509 | flags &= ~ (EF_ARM_RELEXEC | EF_ARM_HASENTRY); |
5510 | ||
5511 | if (flags) | |
9b485d32 | 5512 | fprintf (file, _("<Unrecognised flag bits set>")); |
9a5aca8c | 5513 | |
252b5132 RH |
5514 | fputc ('\n', file); |
5515 | ||
b34976b6 | 5516 | return TRUE; |
252b5132 RH |
5517 | } |
5518 | ||
5519 | static int | |
57e8b36a | 5520 | elf32_arm_get_symbol_type (Elf_Internal_Sym * elf_sym, int type) |
252b5132 | 5521 | { |
2f0ca46a NC |
5522 | switch (ELF_ST_TYPE (elf_sym->st_info)) |
5523 | { | |
5524 | case STT_ARM_TFUNC: | |
5525 | return ELF_ST_TYPE (elf_sym->st_info); | |
ce855c42 | 5526 | |
2f0ca46a NC |
5527 | case STT_ARM_16BIT: |
5528 | /* If the symbol is not an object, return the STT_ARM_16BIT flag. | |
5529 | This allows us to distinguish between data used by Thumb instructions | |
5530 | and non-data (which is probably code) inside Thumb regions of an | |
5531 | executable. */ | |
1a0eb693 | 5532 | if (type != STT_OBJECT && type != STT_TLS) |
2f0ca46a NC |
5533 | return ELF_ST_TYPE (elf_sym->st_info); |
5534 | break; | |
9a5aca8c | 5535 | |
ce855c42 NC |
5536 | default: |
5537 | break; | |
2f0ca46a NC |
5538 | } |
5539 | ||
5540 | return type; | |
252b5132 | 5541 | } |
f21f3fe0 | 5542 | |
252b5132 | 5543 | static asection * |
57e8b36a NC |
5544 | elf32_arm_gc_mark_hook (asection * sec, |
5545 | struct bfd_link_info * info ATTRIBUTE_UNUSED, | |
5546 | Elf_Internal_Rela * rel, | |
5547 | struct elf_link_hash_entry * h, | |
5548 | Elf_Internal_Sym * sym) | |
252b5132 RH |
5549 | { |
5550 | if (h != NULL) | |
5551 | { | |
5552 | switch (ELF32_R_TYPE (rel->r_info)) | |
5553 | { | |
5554 | case R_ARM_GNU_VTINHERIT: | |
5555 | case R_ARM_GNU_VTENTRY: | |
5556 | break; | |
5557 | ||
5558 | default: | |
5559 | switch (h->root.type) | |
5560 | { | |
5561 | case bfd_link_hash_defined: | |
5562 | case bfd_link_hash_defweak: | |
5563 | return h->root.u.def.section; | |
5564 | ||
5565 | case bfd_link_hash_common: | |
5566 | return h->root.u.c.p->section; | |
e049a0de ILT |
5567 | |
5568 | default: | |
5569 | break; | |
252b5132 RH |
5570 | } |
5571 | } | |
5572 | } | |
5573 | else | |
1e2f5b6e | 5574 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
9ad5cbcf | 5575 | |
252b5132 RH |
5576 | return NULL; |
5577 | } | |
5578 | ||
780a67af NC |
5579 | /* Update the got entry reference counts for the section being removed. */ |
5580 | ||
b34976b6 | 5581 | static bfd_boolean |
ba93b8ac DJ |
5582 | elf32_arm_gc_sweep_hook (bfd * abfd, |
5583 | struct bfd_link_info * info, | |
5584 | asection * sec, | |
5585 | const Elf_Internal_Rela * relocs) | |
252b5132 | 5586 | { |
5e681ec4 PB |
5587 | Elf_Internal_Shdr *symtab_hdr; |
5588 | struct elf_link_hash_entry **sym_hashes; | |
5589 | bfd_signed_vma *local_got_refcounts; | |
5590 | const Elf_Internal_Rela *rel, *relend; | |
eb043451 PB |
5591 | struct elf32_arm_link_hash_table * globals; |
5592 | ||
5593 | globals = elf32_arm_hash_table (info); | |
5e681ec4 PB |
5594 | |
5595 | elf_section_data (sec)->local_dynrel = NULL; | |
5596 | ||
5597 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
5598 | sym_hashes = elf_sym_hashes (abfd); | |
5599 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
5600 | ||
5601 | relend = relocs + sec->reloc_count; | |
5602 | for (rel = relocs; rel < relend; rel++) | |
eb043451 | 5603 | { |
3eb128b2 AM |
5604 | unsigned long r_symndx; |
5605 | struct elf_link_hash_entry *h = NULL; | |
eb043451 | 5606 | int r_type; |
5e681ec4 | 5607 | |
3eb128b2 AM |
5608 | r_symndx = ELF32_R_SYM (rel->r_info); |
5609 | if (r_symndx >= symtab_hdr->sh_info) | |
5610 | { | |
5611 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
5612 | while (h->root.type == bfd_link_hash_indirect | |
5613 | || h->root.type == bfd_link_hash_warning) | |
5614 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5615 | } | |
5616 | ||
eb043451 | 5617 | r_type = ELF32_R_TYPE (rel->r_info); |
eb043451 | 5618 | r_type = arm_real_reloc_type (globals, r_type); |
eb043451 PB |
5619 | switch (r_type) |
5620 | { | |
5621 | case R_ARM_GOT32: | |
eb043451 | 5622 | case R_ARM_GOT_PREL: |
ba93b8ac DJ |
5623 | case R_ARM_TLS_GD32: |
5624 | case R_ARM_TLS_IE32: | |
3eb128b2 | 5625 | if (h != NULL) |
eb043451 | 5626 | { |
eb043451 PB |
5627 | if (h->got.refcount > 0) |
5628 | h->got.refcount -= 1; | |
5629 | } | |
5630 | else if (local_got_refcounts != NULL) | |
5631 | { | |
5632 | if (local_got_refcounts[r_symndx] > 0) | |
5633 | local_got_refcounts[r_symndx] -= 1; | |
5634 | } | |
5635 | break; | |
5636 | ||
ba93b8ac DJ |
5637 | case R_ARM_TLS_LDM32: |
5638 | elf32_arm_hash_table (info)->tls_ldm_got.refcount -= 1; | |
5639 | break; | |
5640 | ||
eb043451 PB |
5641 | case R_ARM_ABS32: |
5642 | case R_ARM_REL32: | |
5643 | case R_ARM_PC24: | |
5644 | case R_ARM_PLT32: | |
5b5bb741 PB |
5645 | case R_ARM_CALL: |
5646 | case R_ARM_JUMP24: | |
eb043451 | 5647 | case R_ARM_PREL31: |
c19d1205 | 5648 | case R_ARM_THM_CALL: |
b7693d02 DJ |
5649 | /* Should the interworking branches be here also? */ |
5650 | ||
3eb128b2 | 5651 | if (h != NULL) |
eb043451 PB |
5652 | { |
5653 | struct elf32_arm_link_hash_entry *eh; | |
5654 | struct elf32_arm_relocs_copied **pp; | |
5655 | struct elf32_arm_relocs_copied *p; | |
5e681ec4 | 5656 | |
b7693d02 | 5657 | eh = (struct elf32_arm_link_hash_entry *) h; |
5e681ec4 | 5658 | |
eb043451 | 5659 | if (h->plt.refcount > 0) |
b7693d02 DJ |
5660 | { |
5661 | h->plt.refcount -= 1; | |
c19d1205 | 5662 | if (ELF32_R_TYPE (rel->r_info) == R_ARM_THM_CALL) |
b7693d02 DJ |
5663 | eh->plt_thumb_refcount--; |
5664 | } | |
5e681ec4 | 5665 | |
eb043451 | 5666 | if (r_type == R_ARM_ABS32 |
eb043451 PB |
5667 | || r_type == R_ARM_REL32) |
5668 | { | |
eb043451 PB |
5669 | for (pp = &eh->relocs_copied; (p = *pp) != NULL; |
5670 | pp = &p->next) | |
5671 | if (p->section == sec) | |
5672 | { | |
5673 | p->count -= 1; | |
ba93b8ac DJ |
5674 | if (ELF32_R_TYPE (rel->r_info) == R_ARM_REL32) |
5675 | p->pc_count -= 1; | |
eb043451 PB |
5676 | if (p->count == 0) |
5677 | *pp = p->next; | |
5678 | break; | |
5679 | } | |
5680 | } | |
5681 | } | |
5682 | break; | |
5e681ec4 | 5683 | |
eb043451 PB |
5684 | default: |
5685 | break; | |
5686 | } | |
5687 | } | |
5e681ec4 | 5688 | |
b34976b6 | 5689 | return TRUE; |
252b5132 RH |
5690 | } |
5691 | ||
780a67af NC |
5692 | /* Look through the relocs for a section during the first phase. */ |
5693 | ||
b34976b6 | 5694 | static bfd_boolean |
57e8b36a NC |
5695 | elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info, |
5696 | asection *sec, const Elf_Internal_Rela *relocs) | |
252b5132 | 5697 | { |
b34976b6 AM |
5698 | Elf_Internal_Shdr *symtab_hdr; |
5699 | struct elf_link_hash_entry **sym_hashes; | |
5700 | struct elf_link_hash_entry **sym_hashes_end; | |
5701 | const Elf_Internal_Rela *rel; | |
5702 | const Elf_Internal_Rela *rel_end; | |
5703 | bfd *dynobj; | |
5e681ec4 | 5704 | asection *sreloc; |
b34976b6 | 5705 | bfd_vma *local_got_offsets; |
5e681ec4 | 5706 | struct elf32_arm_link_hash_table *htab; |
9a5aca8c | 5707 | |
1049f94e | 5708 | if (info->relocatable) |
b34976b6 | 5709 | return TRUE; |
9a5aca8c | 5710 | |
5e681ec4 PB |
5711 | htab = elf32_arm_hash_table (info); |
5712 | sreloc = NULL; | |
9a5aca8c | 5713 | |
67687978 PB |
5714 | /* Create dynamic sections for relocatable executables so that we can |
5715 | copy relocations. */ | |
5716 | if (htab->root.is_relocatable_executable | |
5717 | && ! htab->root.dynamic_sections_created) | |
5718 | { | |
5719 | if (! _bfd_elf_link_create_dynamic_sections (abfd, info)) | |
5720 | return FALSE; | |
5721 | } | |
5722 | ||
252b5132 RH |
5723 | dynobj = elf_hash_table (info)->dynobj; |
5724 | local_got_offsets = elf_local_got_offsets (abfd); | |
f21f3fe0 | 5725 | |
252b5132 RH |
5726 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
5727 | sym_hashes = elf_sym_hashes (abfd); | |
9b485d32 NC |
5728 | sym_hashes_end = sym_hashes |
5729 | + symtab_hdr->sh_size / sizeof (Elf32_External_Sym); | |
5730 | ||
252b5132 RH |
5731 | if (!elf_bad_symtab (abfd)) |
5732 | sym_hashes_end -= symtab_hdr->sh_info; | |
9b485d32 | 5733 | |
252b5132 RH |
5734 | rel_end = relocs + sec->reloc_count; |
5735 | for (rel = relocs; rel < rel_end; rel++) | |
5736 | { | |
5737 | struct elf_link_hash_entry *h; | |
b7693d02 | 5738 | struct elf32_arm_link_hash_entry *eh; |
252b5132 | 5739 | unsigned long r_symndx; |
eb043451 | 5740 | int r_type; |
9a5aca8c | 5741 | |
252b5132 | 5742 | r_symndx = ELF32_R_SYM (rel->r_info); |
eb043451 | 5743 | r_type = ELF32_R_TYPE (rel->r_info); |
eb043451 | 5744 | r_type = arm_real_reloc_type (htab, r_type); |
ba93b8ac DJ |
5745 | |
5746 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
5747 | { | |
5748 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd, | |
5749 | r_symndx); | |
5750 | return FALSE; | |
5751 | } | |
5752 | ||
252b5132 RH |
5753 | if (r_symndx < symtab_hdr->sh_info) |
5754 | h = NULL; | |
5755 | else | |
973a3492 L |
5756 | { |
5757 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
5758 | while (h->root.type == bfd_link_hash_indirect | |
5759 | || h->root.type == bfd_link_hash_warning) | |
5760 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5761 | } | |
9a5aca8c | 5762 | |
b7693d02 DJ |
5763 | eh = (struct elf32_arm_link_hash_entry *) h; |
5764 | ||
eb043451 | 5765 | switch (r_type) |
252b5132 | 5766 | { |
5e681ec4 | 5767 | case R_ARM_GOT32: |
eb043451 | 5768 | case R_ARM_GOT_PREL: |
ba93b8ac DJ |
5769 | case R_ARM_TLS_GD32: |
5770 | case R_ARM_TLS_IE32: | |
5e681ec4 | 5771 | /* This symbol requires a global offset table entry. */ |
ba93b8ac DJ |
5772 | { |
5773 | int tls_type, old_tls_type; | |
5e681ec4 | 5774 | |
ba93b8ac DJ |
5775 | switch (r_type) |
5776 | { | |
5777 | case R_ARM_TLS_GD32: tls_type = GOT_TLS_GD; break; | |
5778 | case R_ARM_TLS_IE32: tls_type = GOT_TLS_IE; break; | |
5779 | default: tls_type = GOT_NORMAL; break; | |
5780 | } | |
252b5132 | 5781 | |
ba93b8ac DJ |
5782 | if (h != NULL) |
5783 | { | |
5784 | h->got.refcount++; | |
5785 | old_tls_type = elf32_arm_hash_entry (h)->tls_type; | |
5786 | } | |
5787 | else | |
5788 | { | |
5789 | bfd_signed_vma *local_got_refcounts; | |
5790 | ||
5791 | /* This is a global offset table entry for a local symbol. */ | |
5792 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
5793 | if (local_got_refcounts == NULL) | |
5794 | { | |
5795 | bfd_size_type size; | |
5796 | ||
5797 | size = symtab_hdr->sh_info; | |
5798 | size *= (sizeof (bfd_signed_vma) + sizeof(char)); | |
5799 | local_got_refcounts = bfd_zalloc (abfd, size); | |
5800 | if (local_got_refcounts == NULL) | |
5801 | return FALSE; | |
5802 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
5803 | elf32_arm_local_got_tls_type (abfd) | |
5804 | = (char *) (local_got_refcounts + symtab_hdr->sh_info); | |
5805 | } | |
5806 | local_got_refcounts[r_symndx] += 1; | |
5807 | old_tls_type = elf32_arm_local_got_tls_type (abfd) [r_symndx]; | |
5808 | } | |
5809 | ||
5810 | /* We will already have issued an error message if there is a | |
5811 | TLS / non-TLS mismatch, based on the symbol type. We don't | |
5812 | support any linker relaxations. So just combine any TLS | |
5813 | types needed. */ | |
5814 | if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL | |
5815 | && tls_type != GOT_NORMAL) | |
5816 | tls_type |= old_tls_type; | |
5817 | ||
5818 | if (old_tls_type != tls_type) | |
5819 | { | |
5820 | if (h != NULL) | |
5821 | elf32_arm_hash_entry (h)->tls_type = tls_type; | |
5822 | else | |
5823 | elf32_arm_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
5824 | } | |
5825 | } | |
5826 | /* Fall through */ | |
5827 | ||
5828 | case R_ARM_TLS_LDM32: | |
5829 | if (r_type == R_ARM_TLS_LDM32) | |
5830 | htab->tls_ldm_got.refcount++; | |
5831 | /* Fall through */ | |
252b5132 | 5832 | |
c19d1205 | 5833 | case R_ARM_GOTOFF32: |
5e681ec4 PB |
5834 | case R_ARM_GOTPC: |
5835 | if (htab->sgot == NULL) | |
5836 | { | |
5837 | if (htab->root.dynobj == NULL) | |
5838 | htab->root.dynobj = abfd; | |
5839 | if (!create_got_section (htab->root.dynobj, info)) | |
5840 | return FALSE; | |
5841 | } | |
252b5132 RH |
5842 | break; |
5843 | ||
00a97672 RS |
5844 | case R_ARM_ABS12: |
5845 | /* VxWorks uses dynamic R_ARM_ABS12 relocations for | |
5846 | ldr __GOTT_INDEX__ offsets. */ | |
5847 | if (!htab->vxworks_p) | |
5848 | break; | |
5849 | /* Fall through */ | |
5850 | ||
252b5132 RH |
5851 | case R_ARM_ABS32: |
5852 | case R_ARM_REL32: | |
5853 | case R_ARM_PC24: | |
7359ea65 | 5854 | case R_ARM_PLT32: |
5b5bb741 PB |
5855 | case R_ARM_CALL: |
5856 | case R_ARM_JUMP24: | |
eb043451 | 5857 | case R_ARM_PREL31: |
c19d1205 | 5858 | case R_ARM_THM_CALL: |
b7693d02 | 5859 | /* Should the interworking branches be listed here? */ |
7359ea65 | 5860 | if (h != NULL) |
5e681ec4 PB |
5861 | { |
5862 | /* If this reloc is in a read-only section, we might | |
5863 | need a copy reloc. We can't check reliably at this | |
5864 | stage whether the section is read-only, as input | |
5865 | sections have not yet been mapped to output sections. | |
5866 | Tentatively set the flag for now, and correct in | |
5867 | adjust_dynamic_symbol. */ | |
7359ea65 | 5868 | if (!info->shared) |
f5385ebf | 5869 | h->non_got_ref = 1; |
7359ea65 | 5870 | |
5e681ec4 | 5871 | /* We may need a .plt entry if the function this reloc |
c84cd8ee DJ |
5872 | refers to is in a different object. We can't tell for |
5873 | sure yet, because something later might force the | |
5874 | symbol local. */ | |
eb043451 | 5875 | if (r_type == R_ARM_PC24 |
5b5bb741 PB |
5876 | || r_type == R_ARM_CALL |
5877 | || r_type == R_ARM_JUMP24 | |
ee06dc07 | 5878 | || r_type == R_ARM_PREL31 |
b7693d02 | 5879 | || r_type == R_ARM_PLT32 |
c19d1205 | 5880 | || r_type == R_ARM_THM_CALL) |
f5385ebf | 5881 | h->needs_plt = 1; |
4f199be3 DJ |
5882 | |
5883 | /* If we create a PLT entry, this relocation will reference | |
5884 | it, even if it's an ABS32 relocation. */ | |
5885 | h->plt.refcount += 1; | |
b7693d02 | 5886 | |
c19d1205 | 5887 | if (r_type == R_ARM_THM_CALL) |
b7693d02 | 5888 | eh->plt_thumb_refcount += 1; |
5e681ec4 PB |
5889 | } |
5890 | ||
67687978 PB |
5891 | /* If we are creating a shared library or relocatable executable, |
5892 | and this is a reloc against a global symbol, or a non PC | |
5893 | relative reloc against a local symbol, then we need to copy | |
5894 | the reloc into the shared library. However, if we are linking | |
5895 | with -Bsymbolic, we do not need to copy a reloc against a | |
252b5132 RH |
5896 | global symbol which is defined in an object we are |
5897 | including in the link (i.e., DEF_REGULAR is set). At | |
5898 | this point we have not seen all the input files, so it is | |
5899 | possible that DEF_REGULAR is not set now but will be set | |
5900 | later (it is never cleared). We account for that | |
5901 | possibility below by storing information in the | |
5e681ec4 | 5902 | relocs_copied field of the hash table entry. */ |
67687978 | 5903 | if ((info->shared || htab->root.is_relocatable_executable) |
5e681ec4 | 5904 | && (sec->flags & SEC_ALLOC) != 0 |
71a976dd DJ |
5905 | && (r_type == R_ARM_ABS32 |
5906 | || (h != NULL && ! h->needs_plt | |
5907 | && (! info->symbolic || ! h->def_regular)))) | |
252b5132 | 5908 | { |
5e681ec4 PB |
5909 | struct elf32_arm_relocs_copied *p, **head; |
5910 | ||
252b5132 RH |
5911 | /* When creating a shared object, we must copy these |
5912 | reloc types into the output file. We create a reloc | |
5913 | section in dynobj and make room for this reloc. */ | |
5914 | if (sreloc == NULL) | |
5915 | { | |
5916 | const char * name; | |
5917 | ||
5918 | name = (bfd_elf_string_from_elf_section | |
5919 | (abfd, | |
5920 | elf_elfheader (abfd)->e_shstrndx, | |
5921 | elf_section_data (sec)->rel_hdr.sh_name)); | |
5922 | if (name == NULL) | |
b34976b6 | 5923 | return FALSE; |
252b5132 | 5924 | |
00a97672 | 5925 | BFD_ASSERT (reloc_section_p (htab, name, sec)); |
252b5132 RH |
5926 | |
5927 | sreloc = bfd_get_section_by_name (dynobj, name); | |
5928 | if (sreloc == NULL) | |
5929 | { | |
5930 | flagword flags; | |
5931 | ||
252b5132 RH |
5932 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
5933 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
e5a52504 MM |
5934 | if ((sec->flags & SEC_ALLOC) != 0 |
5935 | /* BPABI objects never have dynamic | |
5936 | relocations mapped. */ | |
5937 | && !htab->symbian_p) | |
252b5132 | 5938 | flags |= SEC_ALLOC | SEC_LOAD; |
3496cb2a L |
5939 | sreloc = bfd_make_section_with_flags (dynobj, |
5940 | name, | |
5941 | flags); | |
252b5132 | 5942 | if (sreloc == NULL |
252b5132 | 5943 | || ! bfd_set_section_alignment (dynobj, sreloc, 2)) |
b34976b6 | 5944 | return FALSE; |
252b5132 | 5945 | } |
5e681ec4 PB |
5946 | |
5947 | elf_section_data (sec)->sreloc = sreloc; | |
252b5132 RH |
5948 | } |
5949 | ||
5e681ec4 PB |
5950 | /* If this is a global symbol, we count the number of |
5951 | relocations we need for this symbol. */ | |
5952 | if (h != NULL) | |
252b5132 | 5953 | { |
5e681ec4 PB |
5954 | head = &((struct elf32_arm_link_hash_entry *) h)->relocs_copied; |
5955 | } | |
5956 | else | |
5957 | { | |
5958 | /* Track dynamic relocs needed for local syms too. | |
5959 | We really need local syms available to do this | |
5960 | easily. Oh well. */ | |
57e8b36a | 5961 | |
5e681ec4 | 5962 | asection *s; |
6edfbbad DJ |
5963 | void *vpp; |
5964 | ||
5e681ec4 PB |
5965 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, |
5966 | sec, r_symndx); | |
5967 | if (s == NULL) | |
5968 | return FALSE; | |
57e8b36a | 5969 | |
6edfbbad DJ |
5970 | vpp = &elf_section_data (s)->local_dynrel; |
5971 | head = (struct elf32_arm_relocs_copied **) vpp; | |
5e681ec4 | 5972 | } |
57e8b36a | 5973 | |
5e681ec4 PB |
5974 | p = *head; |
5975 | if (p == NULL || p->section != sec) | |
5976 | { | |
5977 | bfd_size_type amt = sizeof *p; | |
57e8b36a | 5978 | |
5e681ec4 | 5979 | p = bfd_alloc (htab->root.dynobj, amt); |
252b5132 | 5980 | if (p == NULL) |
5e681ec4 PB |
5981 | return FALSE; |
5982 | p->next = *head; | |
5983 | *head = p; | |
5984 | p->section = sec; | |
5985 | p->count = 0; | |
ba93b8ac | 5986 | p->pc_count = 0; |
252b5132 | 5987 | } |
57e8b36a | 5988 | |
ba93b8ac DJ |
5989 | if (r_type == R_ARM_REL32) |
5990 | p->pc_count += 1; | |
71a976dd | 5991 | p->count += 1; |
252b5132 RH |
5992 | } |
5993 | break; | |
5994 | ||
5995 | /* This relocation describes the C++ object vtable hierarchy. | |
5996 | Reconstruct it for later use during GC. */ | |
5997 | case R_ARM_GNU_VTINHERIT: | |
c152c796 | 5998 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 5999 | return FALSE; |
252b5132 | 6000 | break; |
9a5aca8c | 6001 | |
252b5132 RH |
6002 | /* This relocation describes which C++ vtable entries are actually |
6003 | used. Record for later use during GC. */ | |
6004 | case R_ARM_GNU_VTENTRY: | |
c152c796 | 6005 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) |
b34976b6 | 6006 | return FALSE; |
252b5132 RH |
6007 | break; |
6008 | } | |
6009 | } | |
f21f3fe0 | 6010 | |
b34976b6 | 6011 | return TRUE; |
252b5132 RH |
6012 | } |
6013 | ||
3c9458e9 NC |
6014 | /* Treat mapping symbols as special target symbols. */ |
6015 | ||
6016 | static bfd_boolean | |
6017 | elf32_arm_is_target_special_symbol (bfd * abfd ATTRIBUTE_UNUSED, asymbol * sym) | |
6018 | { | |
05ea83ed | 6019 | return bfd_is_arm_mapping_symbol_name (sym->name); |
3c9458e9 NC |
6020 | } |
6021 | ||
0367ecfb NC |
6022 | /* This is a copy of elf_find_function() from elf.c except that |
6023 | ARM mapping symbols are ignored when looking for function names | |
6024 | and STT_ARM_TFUNC is considered to a function type. */ | |
252b5132 | 6025 | |
0367ecfb NC |
6026 | static bfd_boolean |
6027 | arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED, | |
6028 | asection * section, | |
6029 | asymbol ** symbols, | |
6030 | bfd_vma offset, | |
6031 | const char ** filename_ptr, | |
6032 | const char ** functionname_ptr) | |
6033 | { | |
6034 | const char * filename = NULL; | |
6035 | asymbol * func = NULL; | |
6036 | bfd_vma low_func = 0; | |
6037 | asymbol ** p; | |
252b5132 RH |
6038 | |
6039 | for (p = symbols; *p != NULL; p++) | |
6040 | { | |
6041 | elf_symbol_type *q; | |
6042 | ||
6043 | q = (elf_symbol_type *) *p; | |
6044 | ||
252b5132 RH |
6045 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) |
6046 | { | |
6047 | default: | |
6048 | break; | |
6049 | case STT_FILE: | |
6050 | filename = bfd_asymbol_name (&q->symbol); | |
6051 | break; | |
252b5132 RH |
6052 | case STT_FUNC: |
6053 | case STT_ARM_TFUNC: | |
9d2da7ca | 6054 | case STT_NOTYPE: |
0367ecfb NC |
6055 | /* Skip $a and $t symbols. */ |
6056 | if ((q->symbol.flags & BSF_LOCAL) | |
05ea83ed | 6057 | && bfd_is_arm_mapping_symbol_name (q->symbol.name)) |
0367ecfb NC |
6058 | continue; |
6059 | /* Fall through. */ | |
6b40fcba | 6060 | if (bfd_get_section (&q->symbol) == section |
252b5132 RH |
6061 | && q->symbol.value >= low_func |
6062 | && q->symbol.value <= offset) | |
6063 | { | |
6064 | func = (asymbol *) q; | |
6065 | low_func = q->symbol.value; | |
6066 | } | |
6067 | break; | |
6068 | } | |
6069 | } | |
6070 | ||
6071 | if (func == NULL) | |
b34976b6 | 6072 | return FALSE; |
252b5132 | 6073 | |
0367ecfb NC |
6074 | if (filename_ptr) |
6075 | *filename_ptr = filename; | |
6076 | if (functionname_ptr) | |
6077 | *functionname_ptr = bfd_asymbol_name (func); | |
6078 | ||
6079 | return TRUE; | |
6080 | } | |
6081 | ||
6082 | ||
6083 | /* Find the nearest line to a particular section and offset, for error | |
6084 | reporting. This code is a duplicate of the code in elf.c, except | |
6085 | that it uses arm_elf_find_function. */ | |
6086 | ||
6087 | static bfd_boolean | |
6088 | elf32_arm_find_nearest_line (bfd * abfd, | |
6089 | asection * section, | |
6090 | asymbol ** symbols, | |
6091 | bfd_vma offset, | |
6092 | const char ** filename_ptr, | |
6093 | const char ** functionname_ptr, | |
6094 | unsigned int * line_ptr) | |
6095 | { | |
6096 | bfd_boolean found = FALSE; | |
6097 | ||
6098 | /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */ | |
6099 | ||
6100 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
6101 | filename_ptr, functionname_ptr, | |
6102 | line_ptr, 0, | |
6103 | & elf_tdata (abfd)->dwarf2_find_line_info)) | |
6104 | { | |
6105 | if (!*functionname_ptr) | |
6106 | arm_elf_find_function (abfd, section, symbols, offset, | |
6107 | *filename_ptr ? NULL : filename_ptr, | |
6108 | functionname_ptr); | |
f21f3fe0 | 6109 | |
0367ecfb NC |
6110 | return TRUE; |
6111 | } | |
6112 | ||
6113 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
6114 | & found, filename_ptr, | |
6115 | functionname_ptr, line_ptr, | |
6116 | & elf_tdata (abfd)->line_info)) | |
6117 | return FALSE; | |
6118 | ||
6119 | if (found && (*functionname_ptr || *line_ptr)) | |
6120 | return TRUE; | |
6121 | ||
6122 | if (symbols == NULL) | |
6123 | return FALSE; | |
6124 | ||
6125 | if (! arm_elf_find_function (abfd, section, symbols, offset, | |
6126 | filename_ptr, functionname_ptr)) | |
6127 | return FALSE; | |
6128 | ||
6129 | *line_ptr = 0; | |
b34976b6 | 6130 | return TRUE; |
252b5132 RH |
6131 | } |
6132 | ||
4ab527b0 FF |
6133 | static bfd_boolean |
6134 | elf32_arm_find_inliner_info (bfd * abfd, | |
6135 | const char ** filename_ptr, | |
6136 | const char ** functionname_ptr, | |
6137 | unsigned int * line_ptr) | |
6138 | { | |
6139 | bfd_boolean found; | |
6140 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
6141 | functionname_ptr, line_ptr, | |
6142 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
6143 | return found; | |
6144 | } | |
6145 | ||
252b5132 RH |
6146 | /* Adjust a symbol defined by a dynamic object and referenced by a |
6147 | regular object. The current definition is in some section of the | |
6148 | dynamic object, but we're not including those sections. We have to | |
6149 | change the definition to something the rest of the link can | |
6150 | understand. */ | |
6151 | ||
b34976b6 | 6152 | static bfd_boolean |
57e8b36a NC |
6153 | elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info, |
6154 | struct elf_link_hash_entry * h) | |
252b5132 RH |
6155 | { |
6156 | bfd * dynobj; | |
6157 | asection * s; | |
6158 | unsigned int power_of_two; | |
b7693d02 | 6159 | struct elf32_arm_link_hash_entry * eh; |
67687978 | 6160 | struct elf32_arm_link_hash_table *globals; |
252b5132 | 6161 | |
67687978 | 6162 | globals = elf32_arm_hash_table (info); |
252b5132 RH |
6163 | dynobj = elf_hash_table (info)->dynobj; |
6164 | ||
6165 | /* Make sure we know what is going on here. */ | |
6166 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 6167 | && (h->needs_plt |
f6e332e6 | 6168 | || h->u.weakdef != NULL |
f5385ebf AM |
6169 | || (h->def_dynamic |
6170 | && h->ref_regular | |
6171 | && !h->def_regular))); | |
252b5132 | 6172 | |
b7693d02 DJ |
6173 | eh = (struct elf32_arm_link_hash_entry *) h; |
6174 | ||
252b5132 RH |
6175 | /* If this is a function, put it in the procedure linkage table. We |
6176 | will fill in the contents of the procedure linkage table later, | |
6177 | when we know the address of the .got section. */ | |
b7693d02 | 6178 | if (h->type == STT_FUNC || h->type == STT_ARM_TFUNC |
f5385ebf | 6179 | || h->needs_plt) |
252b5132 | 6180 | { |
5e681ec4 PB |
6181 | if (h->plt.refcount <= 0 |
6182 | || SYMBOL_CALLS_LOCAL (info, h) | |
6183 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
6184 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
6185 | { |
6186 | /* This case can occur if we saw a PLT32 reloc in an input | |
5e681ec4 PB |
6187 | file, but the symbol was never referred to by a dynamic |
6188 | object, or if all references were garbage collected. In | |
6189 | such a case, we don't actually need to build a procedure | |
6190 | linkage table, and we can just do a PC24 reloc instead. */ | |
6191 | h->plt.offset = (bfd_vma) -1; | |
b7693d02 | 6192 | eh->plt_thumb_refcount = 0; |
f5385ebf | 6193 | h->needs_plt = 0; |
252b5132 RH |
6194 | } |
6195 | ||
b34976b6 | 6196 | return TRUE; |
252b5132 | 6197 | } |
5e681ec4 | 6198 | else |
b7693d02 DJ |
6199 | { |
6200 | /* It's possible that we incorrectly decided a .plt reloc was | |
6201 | needed for an R_ARM_PC24 or similar reloc to a non-function sym | |
6202 | in check_relocs. We can't decide accurately between function | |
6203 | and non-function syms in check-relocs; Objects loaded later in | |
6204 | the link may change h->type. So fix it now. */ | |
6205 | h->plt.offset = (bfd_vma) -1; | |
6206 | eh->plt_thumb_refcount = 0; | |
6207 | } | |
252b5132 RH |
6208 | |
6209 | /* If this is a weak symbol, and there is a real definition, the | |
6210 | processor independent code will have arranged for us to see the | |
6211 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 6212 | if (h->u.weakdef != NULL) |
252b5132 | 6213 | { |
f6e332e6 AM |
6214 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
6215 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
6216 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
6217 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 6218 | return TRUE; |
252b5132 RH |
6219 | } |
6220 | ||
ba93b8ac DJ |
6221 | /* If there are no non-GOT references, we do not need a copy |
6222 | relocation. */ | |
6223 | if (!h->non_got_ref) | |
6224 | return TRUE; | |
6225 | ||
252b5132 RH |
6226 | /* This is a reference to a symbol defined by a dynamic object which |
6227 | is not a function. */ | |
6228 | ||
6229 | /* If we are creating a shared library, we must presume that the | |
6230 | only references to the symbol are via the global offset table. | |
6231 | For such cases we need not do anything here; the relocations will | |
67687978 PB |
6232 | be handled correctly by relocate_section. Relocatable executables |
6233 | can reference data in shared objects directly, so we don't need to | |
6234 | do anything here. */ | |
6235 | if (info->shared || globals->root.is_relocatable_executable) | |
b34976b6 | 6236 | return TRUE; |
252b5132 | 6237 | |
909272ee AM |
6238 | if (h->size == 0) |
6239 | { | |
6240 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
6241 | h->root.root.string); | |
6242 | return TRUE; | |
6243 | } | |
6244 | ||
252b5132 RH |
6245 | /* We must allocate the symbol in our .dynbss section, which will |
6246 | become part of the .bss section of the executable. There will be | |
6247 | an entry for this symbol in the .dynsym section. The dynamic | |
6248 | object will contain position independent code, so all references | |
6249 | from the dynamic object to this symbol will go through the global | |
6250 | offset table. The dynamic linker will use the .dynsym entry to | |
6251 | determine the address it must put in the global offset table, so | |
6252 | both the dynamic object and the regular object will refer to the | |
6253 | same memory location for the variable. */ | |
252b5132 RH |
6254 | s = bfd_get_section_by_name (dynobj, ".dynbss"); |
6255 | BFD_ASSERT (s != NULL); | |
6256 | ||
6257 | /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to | |
6258 | copy the initial value out of the dynamic object and into the | |
6259 | runtime process image. We need to remember the offset into the | |
00a97672 | 6260 | .rel(a).bss section we are going to use. */ |
252b5132 RH |
6261 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
6262 | { | |
6263 | asection *srel; | |
6264 | ||
00a97672 | 6265 | srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (globals, ".bss")); |
252b5132 | 6266 | BFD_ASSERT (srel != NULL); |
00a97672 | 6267 | srel->size += RELOC_SIZE (globals); |
f5385ebf | 6268 | h->needs_copy = 1; |
252b5132 RH |
6269 | } |
6270 | ||
6271 | /* We need to figure out the alignment required for this symbol. I | |
6272 | have no idea how ELF linkers handle this. */ | |
6273 | power_of_two = bfd_log2 (h->size); | |
6274 | if (power_of_two > 3) | |
6275 | power_of_two = 3; | |
6276 | ||
6277 | /* Apply the required alignment. */ | |
eea6121a | 6278 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
252b5132 RH |
6279 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) |
6280 | { | |
6281 | if (! bfd_set_section_alignment (dynobj, s, power_of_two)) | |
b34976b6 | 6282 | return FALSE; |
252b5132 RH |
6283 | } |
6284 | ||
6285 | /* Define the symbol as being at this point in the section. */ | |
6286 | h->root.u.def.section = s; | |
eea6121a | 6287 | h->root.u.def.value = s->size; |
252b5132 RH |
6288 | |
6289 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 6290 | s->size += h->size; |
252b5132 | 6291 | |
b34976b6 | 6292 | return TRUE; |
252b5132 RH |
6293 | } |
6294 | ||
5e681ec4 PB |
6295 | /* Allocate space in .plt, .got and associated reloc sections for |
6296 | dynamic relocs. */ | |
6297 | ||
6298 | static bfd_boolean | |
57e8b36a | 6299 | allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
5e681ec4 PB |
6300 | { |
6301 | struct bfd_link_info *info; | |
6302 | struct elf32_arm_link_hash_table *htab; | |
6303 | struct elf32_arm_link_hash_entry *eh; | |
6304 | struct elf32_arm_relocs_copied *p; | |
6305 | ||
b7693d02 DJ |
6306 | eh = (struct elf32_arm_link_hash_entry *) h; |
6307 | ||
5e681ec4 PB |
6308 | if (h->root.type == bfd_link_hash_indirect) |
6309 | return TRUE; | |
6310 | ||
6311 | if (h->root.type == bfd_link_hash_warning) | |
6312 | /* When warning symbols are created, they **replace** the "real" | |
6313 | entry in the hash table, thus we never get to see the real | |
6314 | symbol in a hash traversal. So look at it now. */ | |
6315 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6316 | ||
6317 | info = (struct bfd_link_info *) inf; | |
6318 | htab = elf32_arm_hash_table (info); | |
6319 | ||
6320 | if (htab->root.dynamic_sections_created | |
6321 | && h->plt.refcount > 0) | |
6322 | { | |
6323 | /* Make sure this symbol is output as a dynamic symbol. | |
6324 | Undefined weak syms won't yet be marked as dynamic. */ | |
6325 | if (h->dynindx == -1 | |
f5385ebf | 6326 | && !h->forced_local) |
5e681ec4 | 6327 | { |
c152c796 | 6328 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
6329 | return FALSE; |
6330 | } | |
6331 | ||
6332 | if (info->shared | |
7359ea65 | 6333 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
5e681ec4 PB |
6334 | { |
6335 | asection *s = htab->splt; | |
6336 | ||
6337 | /* If this is the first .plt entry, make room for the special | |
6338 | first entry. */ | |
eea6121a | 6339 | if (s->size == 0) |
e5a52504 | 6340 | s->size += htab->plt_header_size; |
5e681ec4 | 6341 | |
eea6121a | 6342 | h->plt.offset = s->size; |
5e681ec4 | 6343 | |
b7693d02 DJ |
6344 | /* If we will insert a Thumb trampoline before this PLT, leave room |
6345 | for it. */ | |
33bfe774 | 6346 | if (!htab->use_blx && eh->plt_thumb_refcount > 0) |
b7693d02 DJ |
6347 | { |
6348 | h->plt.offset += PLT_THUMB_STUB_SIZE; | |
6349 | s->size += PLT_THUMB_STUB_SIZE; | |
6350 | } | |
6351 | ||
5e681ec4 PB |
6352 | /* If this symbol is not defined in a regular file, and we are |
6353 | not generating a shared library, then set the symbol to this | |
6354 | location in the .plt. This is required to make function | |
6355 | pointers compare as equal between the normal executable and | |
6356 | the shared library. */ | |
6357 | if (! info->shared | |
f5385ebf | 6358 | && !h->def_regular) |
5e681ec4 PB |
6359 | { |
6360 | h->root.u.def.section = s; | |
6361 | h->root.u.def.value = h->plt.offset; | |
b7693d02 DJ |
6362 | |
6363 | /* Make sure the function is not marked as Thumb, in case | |
6364 | it is the target of an ABS32 relocation, which will | |
6365 | point to the PLT entry. */ | |
6366 | if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC) | |
6367 | h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC); | |
5e681ec4 PB |
6368 | } |
6369 | ||
6370 | /* Make room for this entry. */ | |
e5a52504 | 6371 | s->size += htab->plt_entry_size; |
5e681ec4 | 6372 | |
e5a52504 | 6373 | if (!htab->symbian_p) |
b7693d02 DJ |
6374 | { |
6375 | /* We also need to make an entry in the .got.plt section, which | |
6376 | will be placed in the .got section by the linker script. */ | |
6377 | eh->plt_got_offset = htab->sgotplt->size; | |
6378 | htab->sgotplt->size += 4; | |
6379 | } | |
5e681ec4 | 6380 | |
00a97672 RS |
6381 | /* We also need to make an entry in the .rel(a).plt section. */ |
6382 | htab->srelplt->size += RELOC_SIZE (htab); | |
6383 | ||
6384 | /* VxWorks executables have a second set of relocations for | |
6385 | each PLT entry. They go in a separate relocation section, | |
6386 | which is processed by the kernel loader. */ | |
6387 | if (htab->vxworks_p && !info->shared) | |
6388 | { | |
6389 | /* There is a relocation for the initial PLT entry: | |
6390 | an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */ | |
6391 | if (h->plt.offset == htab->plt_header_size) | |
6392 | htab->srelplt2->size += RELOC_SIZE (htab); | |
6393 | ||
6394 | /* There are two extra relocations for each subsequent | |
6395 | PLT entry: an R_ARM_32 relocation for the GOT entry, | |
6396 | and an R_ARM_32 relocation for the PLT entry. */ | |
6397 | htab->srelplt2->size += RELOC_SIZE (htab) * 2; | |
6398 | } | |
5e681ec4 PB |
6399 | } |
6400 | else | |
6401 | { | |
6402 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 6403 | h->needs_plt = 0; |
5e681ec4 PB |
6404 | } |
6405 | } | |
6406 | else | |
6407 | { | |
6408 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 6409 | h->needs_plt = 0; |
5e681ec4 PB |
6410 | } |
6411 | ||
6412 | if (h->got.refcount > 0) | |
6413 | { | |
6414 | asection *s; | |
6415 | bfd_boolean dyn; | |
ba93b8ac DJ |
6416 | int tls_type = elf32_arm_hash_entry (h)->tls_type; |
6417 | int indx; | |
5e681ec4 PB |
6418 | |
6419 | /* Make sure this symbol is output as a dynamic symbol. | |
6420 | Undefined weak syms won't yet be marked as dynamic. */ | |
6421 | if (h->dynindx == -1 | |
f5385ebf | 6422 | && !h->forced_local) |
5e681ec4 | 6423 | { |
c152c796 | 6424 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
6425 | return FALSE; |
6426 | } | |
6427 | ||
e5a52504 MM |
6428 | if (!htab->symbian_p) |
6429 | { | |
6430 | s = htab->sgot; | |
6431 | h->got.offset = s->size; | |
ba93b8ac DJ |
6432 | |
6433 | if (tls_type == GOT_UNKNOWN) | |
6434 | abort (); | |
6435 | ||
6436 | if (tls_type == GOT_NORMAL) | |
6437 | /* Non-TLS symbols need one GOT slot. */ | |
6438 | s->size += 4; | |
6439 | else | |
6440 | { | |
6441 | if (tls_type & GOT_TLS_GD) | |
6442 | /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */ | |
6443 | s->size += 8; | |
6444 | if (tls_type & GOT_TLS_IE) | |
6445 | /* R_ARM_TLS_IE32 needs one GOT slot. */ | |
6446 | s->size += 4; | |
6447 | } | |
6448 | ||
e5a52504 | 6449 | dyn = htab->root.dynamic_sections_created; |
ba93b8ac DJ |
6450 | |
6451 | indx = 0; | |
6452 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
6453 | && (!info->shared | |
6454 | || !SYMBOL_REFERENCES_LOCAL (info, h))) | |
6455 | indx = h->dynindx; | |
6456 | ||
6457 | if (tls_type != GOT_NORMAL | |
6458 | && (info->shared || indx != 0) | |
6459 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6460 | || h->root.type != bfd_link_hash_undefweak)) | |
6461 | { | |
6462 | if (tls_type & GOT_TLS_IE) | |
00a97672 | 6463 | htab->srelgot->size += RELOC_SIZE (htab); |
ba93b8ac DJ |
6464 | |
6465 | if (tls_type & GOT_TLS_GD) | |
00a97672 | 6466 | htab->srelgot->size += RELOC_SIZE (htab); |
ba93b8ac DJ |
6467 | |
6468 | if ((tls_type & GOT_TLS_GD) && indx != 0) | |
00a97672 | 6469 | htab->srelgot->size += RELOC_SIZE (htab); |
ba93b8ac DJ |
6470 | } |
6471 | else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6472 | || h->root.type != bfd_link_hash_undefweak) | |
6473 | && (info->shared | |
6474 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
00a97672 | 6475 | htab->srelgot->size += RELOC_SIZE (htab); |
e5a52504 | 6476 | } |
5e681ec4 PB |
6477 | } |
6478 | else | |
6479 | h->got.offset = (bfd_vma) -1; | |
6480 | ||
5e681ec4 PB |
6481 | if (eh->relocs_copied == NULL) |
6482 | return TRUE; | |
6483 | ||
6484 | /* In the shared -Bsymbolic case, discard space allocated for | |
6485 | dynamic pc-relative relocs against symbols which turn out to be | |
6486 | defined in regular objects. For the normal shared case, discard | |
6487 | space for pc-relative relocs that have become local due to symbol | |
6488 | visibility changes. */ | |
6489 | ||
67687978 | 6490 | if (info->shared || htab->root.is_relocatable_executable) |
5e681ec4 | 6491 | { |
ba93b8ac DJ |
6492 | /* The only reloc that uses pc_count is R_ARM_REL32, which will |
6493 | appear on something like ".long foo - .". We want calls to | |
6494 | protected symbols to resolve directly to the function rather | |
6495 | than going via the plt. If people want function pointer | |
6496 | comparisons to work as expected then they should avoid | |
6497 | writing assembly like ".long foo - .". */ | |
6498 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
6499 | { | |
6500 | struct elf32_arm_relocs_copied **pp; | |
6501 | ||
6502 | for (pp = &eh->relocs_copied; (p = *pp) != NULL; ) | |
6503 | { | |
6504 | p->count -= p->pc_count; | |
6505 | p->pc_count = 0; | |
6506 | if (p->count == 0) | |
6507 | *pp = p->next; | |
6508 | else | |
6509 | pp = &p->next; | |
6510 | } | |
6511 | } | |
6512 | ||
6513 | /* Also discard relocs on undefined weak syms with non-default | |
7359ea65 | 6514 | visibility. */ |
22d606e9 | 6515 | if (eh->relocs_copied != NULL |
5e681ec4 | 6516 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 AM |
6517 | { |
6518 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
6519 | eh->relocs_copied = NULL; | |
6520 | ||
6521 | /* Make sure undefined weak symbols are output as a dynamic | |
6522 | symbol in PIEs. */ | |
6523 | else if (h->dynindx == -1 | |
6524 | && !h->forced_local) | |
6525 | { | |
6526 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
6527 | return FALSE; | |
6528 | } | |
6529 | } | |
6530 | ||
67687978 PB |
6531 | else if (htab->root.is_relocatable_executable && h->dynindx == -1 |
6532 | && h->root.type == bfd_link_hash_new) | |
6533 | { | |
6534 | /* Output absolute symbols so that we can create relocations | |
6535 | against them. For normal symbols we output a relocation | |
6536 | against the section that contains them. */ | |
6537 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
6538 | return FALSE; | |
6539 | } | |
6540 | ||
5e681ec4 PB |
6541 | } |
6542 | else | |
6543 | { | |
6544 | /* For the non-shared case, discard space for relocs against | |
6545 | symbols which turn out to need copy relocs or are not | |
6546 | dynamic. */ | |
6547 | ||
f5385ebf AM |
6548 | if (!h->non_got_ref |
6549 | && ((h->def_dynamic | |
6550 | && !h->def_regular) | |
5e681ec4 PB |
6551 | || (htab->root.dynamic_sections_created |
6552 | && (h->root.type == bfd_link_hash_undefweak | |
6553 | || h->root.type == bfd_link_hash_undefined)))) | |
6554 | { | |
6555 | /* Make sure this symbol is output as a dynamic symbol. | |
6556 | Undefined weak syms won't yet be marked as dynamic. */ | |
6557 | if (h->dynindx == -1 | |
f5385ebf | 6558 | && !h->forced_local) |
5e681ec4 | 6559 | { |
c152c796 | 6560 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
6561 | return FALSE; |
6562 | } | |
6563 | ||
6564 | /* If that succeeded, we know we'll be keeping all the | |
6565 | relocs. */ | |
6566 | if (h->dynindx != -1) | |
6567 | goto keep; | |
6568 | } | |
6569 | ||
6570 | eh->relocs_copied = NULL; | |
6571 | ||
6572 | keep: ; | |
6573 | } | |
6574 | ||
6575 | /* Finally, allocate space. */ | |
6576 | for (p = eh->relocs_copied; p != NULL; p = p->next) | |
6577 | { | |
6578 | asection *sreloc = elf_section_data (p->section)->sreloc; | |
00a97672 | 6579 | sreloc->size += p->count * RELOC_SIZE (htab); |
5e681ec4 PB |
6580 | } |
6581 | ||
6582 | return TRUE; | |
6583 | } | |
6584 | ||
08d1f311 DJ |
6585 | /* Find any dynamic relocs that apply to read-only sections. */ |
6586 | ||
6587 | static bfd_boolean | |
6588 | elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry *h, PTR inf) | |
6589 | { | |
6590 | struct elf32_arm_link_hash_entry *eh; | |
6591 | struct elf32_arm_relocs_copied *p; | |
6592 | ||
6593 | if (h->root.type == bfd_link_hash_warning) | |
6594 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6595 | ||
6596 | eh = (struct elf32_arm_link_hash_entry *) h; | |
6597 | for (p = eh->relocs_copied; p != NULL; p = p->next) | |
6598 | { | |
6599 | asection *s = p->section; | |
6600 | ||
6601 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
6602 | { | |
6603 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
6604 | ||
6605 | info->flags |= DF_TEXTREL; | |
6606 | ||
6607 | /* Not an error, just cut short the traversal. */ | |
6608 | return FALSE; | |
6609 | } | |
6610 | } | |
6611 | return TRUE; | |
6612 | } | |
6613 | ||
252b5132 RH |
6614 | /* Set the sizes of the dynamic sections. */ |
6615 | ||
b34976b6 | 6616 | static bfd_boolean |
57e8b36a NC |
6617 | elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED, |
6618 | struct bfd_link_info * info) | |
252b5132 RH |
6619 | { |
6620 | bfd * dynobj; | |
6621 | asection * s; | |
b34976b6 AM |
6622 | bfd_boolean plt; |
6623 | bfd_boolean relocs; | |
5e681ec4 PB |
6624 | bfd *ibfd; |
6625 | struct elf32_arm_link_hash_table *htab; | |
252b5132 | 6626 | |
5e681ec4 | 6627 | htab = elf32_arm_hash_table (info); |
252b5132 RH |
6628 | dynobj = elf_hash_table (info)->dynobj; |
6629 | BFD_ASSERT (dynobj != NULL); | |
39b41c9c | 6630 | check_use_blx (htab); |
252b5132 RH |
6631 | |
6632 | if (elf_hash_table (info)->dynamic_sections_created) | |
6633 | { | |
6634 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 6635 | if (info->executable) |
252b5132 RH |
6636 | { |
6637 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
6638 | BFD_ASSERT (s != NULL); | |
eea6121a | 6639 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
252b5132 RH |
6640 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
6641 | } | |
6642 | } | |
5e681ec4 PB |
6643 | |
6644 | /* Set up .got offsets for local syms, and space for local dynamic | |
6645 | relocs. */ | |
6646 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
252b5132 | 6647 | { |
5e681ec4 PB |
6648 | bfd_signed_vma *local_got; |
6649 | bfd_signed_vma *end_local_got; | |
6650 | char *local_tls_type; | |
6651 | bfd_size_type locsymcount; | |
6652 | Elf_Internal_Shdr *symtab_hdr; | |
6653 | asection *srel; | |
6654 | ||
6655 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) | |
6656 | continue; | |
6657 | ||
6658 | for (s = ibfd->sections; s != NULL; s = s->next) | |
6659 | { | |
6660 | struct elf32_arm_relocs_copied *p; | |
6661 | ||
6edfbbad | 6662 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
5e681ec4 PB |
6663 | { |
6664 | if (!bfd_is_abs_section (p->section) | |
6665 | && bfd_is_abs_section (p->section->output_section)) | |
6666 | { | |
6667 | /* Input section has been discarded, either because | |
6668 | it is a copy of a linkonce section or due to | |
6669 | linker script /DISCARD/, so we'll be discarding | |
6670 | the relocs too. */ | |
6671 | } | |
6672 | else if (p->count != 0) | |
6673 | { | |
6674 | srel = elf_section_data (p->section)->sreloc; | |
00a97672 | 6675 | srel->size += p->count * RELOC_SIZE (htab); |
5e681ec4 PB |
6676 | if ((p->section->output_section->flags & SEC_READONLY) != 0) |
6677 | info->flags |= DF_TEXTREL; | |
6678 | } | |
6679 | } | |
6680 | } | |
6681 | ||
6682 | local_got = elf_local_got_refcounts (ibfd); | |
6683 | if (!local_got) | |
6684 | continue; | |
6685 | ||
6686 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
6687 | locsymcount = symtab_hdr->sh_info; | |
6688 | end_local_got = local_got + locsymcount; | |
ba93b8ac | 6689 | local_tls_type = elf32_arm_local_got_tls_type (ibfd); |
5e681ec4 PB |
6690 | s = htab->sgot; |
6691 | srel = htab->srelgot; | |
6692 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) | |
6693 | { | |
6694 | if (*local_got > 0) | |
6695 | { | |
eea6121a | 6696 | *local_got = s->size; |
ba93b8ac DJ |
6697 | if (*local_tls_type & GOT_TLS_GD) |
6698 | /* TLS_GD relocs need an 8-byte structure in the GOT. */ | |
6699 | s->size += 8; | |
6700 | if (*local_tls_type & GOT_TLS_IE) | |
6701 | s->size += 4; | |
6702 | if (*local_tls_type == GOT_NORMAL) | |
6703 | s->size += 4; | |
6704 | ||
6705 | if (info->shared || *local_tls_type == GOT_TLS_GD) | |
00a97672 | 6706 | srel->size += RELOC_SIZE (htab); |
5e681ec4 PB |
6707 | } |
6708 | else | |
6709 | *local_got = (bfd_vma) -1; | |
6710 | } | |
252b5132 RH |
6711 | } |
6712 | ||
ba93b8ac DJ |
6713 | if (htab->tls_ldm_got.refcount > 0) |
6714 | { | |
6715 | /* Allocate two GOT entries and one dynamic relocation (if necessary) | |
6716 | for R_ARM_TLS_LDM32 relocations. */ | |
6717 | htab->tls_ldm_got.offset = htab->sgot->size; | |
6718 | htab->sgot->size += 8; | |
6719 | if (info->shared) | |
00a97672 | 6720 | htab->srelgot->size += RELOC_SIZE (htab); |
ba93b8ac DJ |
6721 | } |
6722 | else | |
6723 | htab->tls_ldm_got.offset = -1; | |
6724 | ||
5e681ec4 PB |
6725 | /* Allocate global sym .plt and .got entries, and space for global |
6726 | sym dynamic relocs. */ | |
57e8b36a | 6727 | elf_link_hash_traverse (& htab->root, allocate_dynrelocs, info); |
252b5132 RH |
6728 | |
6729 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
6730 | determined the sizes of the various dynamic sections. Allocate | |
6731 | memory for them. */ | |
b34976b6 AM |
6732 | plt = FALSE; |
6733 | relocs = FALSE; | |
252b5132 RH |
6734 | for (s = dynobj->sections; s != NULL; s = s->next) |
6735 | { | |
6736 | const char * name; | |
252b5132 RH |
6737 | |
6738 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
6739 | continue; | |
6740 | ||
6741 | /* It's OK to base decisions on the section name, because none | |
6742 | of the dynobj section names depend upon the input files. */ | |
6743 | name = bfd_get_section_name (dynobj, s); | |
6744 | ||
24a1ba0f | 6745 | if (strcmp (name, ".plt") == 0) |
252b5132 | 6746 | { |
c456f082 AM |
6747 | /* Remember whether there is a PLT. */ |
6748 | plt = s->size != 0; | |
252b5132 RH |
6749 | } |
6750 | else if (strncmp (name, ".rel", 4) == 0) | |
6751 | { | |
c456f082 | 6752 | if (s->size != 0) |
252b5132 | 6753 | { |
252b5132 | 6754 | /* Remember whether there are any reloc sections other |
00a97672 RS |
6755 | than .rel(a).plt and .rela.plt.unloaded. */ |
6756 | if (s != htab->srelplt && s != htab->srelplt2) | |
b34976b6 | 6757 | relocs = TRUE; |
252b5132 RH |
6758 | |
6759 | /* We use the reloc_count field as a counter if we need | |
6760 | to copy relocs into the output file. */ | |
6761 | s->reloc_count = 0; | |
6762 | } | |
6763 | } | |
c456f082 AM |
6764 | else if (strncmp (name, ".got", 4) != 0 |
6765 | && strcmp (name, ".dynbss") != 0) | |
252b5132 RH |
6766 | { |
6767 | /* It's not one of our sections, so don't allocate space. */ | |
6768 | continue; | |
6769 | } | |
6770 | ||
c456f082 | 6771 | if (s->size == 0) |
252b5132 | 6772 | { |
c456f082 | 6773 | /* If we don't need this section, strip it from the |
00a97672 RS |
6774 | output file. This is mostly to handle .rel(a).bss and |
6775 | .rel(a).plt. We must create both sections in | |
c456f082 AM |
6776 | create_dynamic_sections, because they must be created |
6777 | before the linker maps input sections to output | |
6778 | sections. The linker does that before | |
6779 | adjust_dynamic_symbol is called, and it is that | |
6780 | function which decides whether anything needs to go | |
6781 | into these sections. */ | |
8423293d | 6782 | s->flags |= SEC_EXCLUDE; |
252b5132 RH |
6783 | continue; |
6784 | } | |
6785 | ||
c456f082 AM |
6786 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
6787 | continue; | |
6788 | ||
252b5132 | 6789 | /* Allocate memory for the section contents. */ |
eea6121a | 6790 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
c456f082 | 6791 | if (s->contents == NULL) |
b34976b6 | 6792 | return FALSE; |
252b5132 RH |
6793 | } |
6794 | ||
6795 | if (elf_hash_table (info)->dynamic_sections_created) | |
6796 | { | |
6797 | /* Add some entries to the .dynamic section. We fill in the | |
6798 | values later, in elf32_arm_finish_dynamic_sections, but we | |
6799 | must add the entries now so that we get the correct size for | |
6800 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
6801 | dynamic linker and used by the debugger. */ | |
dc810e39 | 6802 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 6803 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 6804 | |
8532796c | 6805 | if (info->executable) |
252b5132 | 6806 | { |
dc810e39 | 6807 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 6808 | return FALSE; |
252b5132 RH |
6809 | } |
6810 | ||
6811 | if (plt) | |
6812 | { | |
dc810e39 AM |
6813 | if ( !add_dynamic_entry (DT_PLTGOT, 0) |
6814 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
00a97672 RS |
6815 | || !add_dynamic_entry (DT_PLTREL, |
6816 | htab->use_rel ? DT_REL : DT_RELA) | |
dc810e39 | 6817 | || !add_dynamic_entry (DT_JMPREL, 0)) |
b34976b6 | 6818 | return FALSE; |
252b5132 RH |
6819 | } |
6820 | ||
6821 | if (relocs) | |
6822 | { | |
00a97672 RS |
6823 | if (htab->use_rel) |
6824 | { | |
6825 | if (!add_dynamic_entry (DT_REL, 0) | |
6826 | || !add_dynamic_entry (DT_RELSZ, 0) | |
6827 | || !add_dynamic_entry (DT_RELENT, RELOC_SIZE (htab))) | |
6828 | return FALSE; | |
6829 | } | |
6830 | else | |
6831 | { | |
6832 | if (!add_dynamic_entry (DT_RELA, 0) | |
6833 | || !add_dynamic_entry (DT_RELASZ, 0) | |
6834 | || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab))) | |
6835 | return FALSE; | |
6836 | } | |
252b5132 RH |
6837 | } |
6838 | ||
08d1f311 DJ |
6839 | /* If any dynamic relocs apply to a read-only section, |
6840 | then we need a DT_TEXTREL entry. */ | |
6841 | if ((info->flags & DF_TEXTREL) == 0) | |
6842 | elf_link_hash_traverse (&htab->root, elf32_arm_readonly_dynrelocs, | |
6843 | (PTR) info); | |
6844 | ||
99e4ae17 | 6845 | if ((info->flags & DF_TEXTREL) != 0) |
252b5132 | 6846 | { |
dc810e39 | 6847 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 6848 | return FALSE; |
252b5132 RH |
6849 | } |
6850 | } | |
8532796c | 6851 | #undef add_dynamic_entry |
252b5132 | 6852 | |
b34976b6 | 6853 | return TRUE; |
252b5132 RH |
6854 | } |
6855 | ||
252b5132 RH |
6856 | /* Finish up dynamic symbol handling. We set the contents of various |
6857 | dynamic sections here. */ | |
6858 | ||
b34976b6 | 6859 | static bfd_boolean |
57e8b36a NC |
6860 | elf32_arm_finish_dynamic_symbol (bfd * output_bfd, struct bfd_link_info * info, |
6861 | struct elf_link_hash_entry * h, Elf_Internal_Sym * sym) | |
252b5132 RH |
6862 | { |
6863 | bfd * dynobj; | |
e5a52504 | 6864 | struct elf32_arm_link_hash_table *htab; |
b7693d02 | 6865 | struct elf32_arm_link_hash_entry *eh; |
252b5132 RH |
6866 | |
6867 | dynobj = elf_hash_table (info)->dynobj; | |
e5a52504 | 6868 | htab = elf32_arm_hash_table (info); |
b7693d02 | 6869 | eh = (struct elf32_arm_link_hash_entry *) h; |
252b5132 RH |
6870 | |
6871 | if (h->plt.offset != (bfd_vma) -1) | |
6872 | { | |
6873 | asection * splt; | |
252b5132 | 6874 | asection * srel; |
e5a52504 | 6875 | bfd_byte *loc; |
24a1ba0f | 6876 | bfd_vma plt_index; |
947216bf | 6877 | Elf_Internal_Rela rel; |
252b5132 RH |
6878 | |
6879 | /* This symbol has an entry in the procedure linkage table. Set | |
6880 | it up. */ | |
6881 | ||
6882 | BFD_ASSERT (h->dynindx != -1); | |
6883 | ||
6884 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
00a97672 | 6885 | srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".plt")); |
e5a52504 | 6886 | BFD_ASSERT (splt != NULL && srel != NULL); |
252b5132 | 6887 | |
e5a52504 MM |
6888 | /* Fill in the entry in the procedure linkage table. */ |
6889 | if (htab->symbian_p) | |
6890 | { | |
6891 | unsigned i; | |
6892 | for (i = 0; i < htab->plt_entry_size / 4; ++i) | |
6893 | bfd_put_32 (output_bfd, | |
6894 | elf32_arm_symbian_plt_entry[i], | |
6895 | splt->contents + h->plt.offset + 4 * i); | |
6896 | ||
6897 | /* Fill in the entry in the .rel.plt section. */ | |
2a1b9a48 MM |
6898 | rel.r_offset = (splt->output_section->vma |
6899 | + splt->output_offset | |
e5a52504 MM |
6900 | + h->plt.offset + 4 * (i - 1)); |
6901 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT); | |
b7693d02 DJ |
6902 | |
6903 | /* Get the index in the procedure linkage table which | |
6904 | corresponds to this symbol. This is the index of this symbol | |
6905 | in all the symbols for which we are making plt entries. The | |
6906 | first entry in the procedure linkage table is reserved. */ | |
6907 | plt_index = ((h->plt.offset - htab->plt_header_size) | |
6908 | / htab->plt_entry_size); | |
e5a52504 MM |
6909 | } |
6910 | else | |
6911 | { | |
00a97672 | 6912 | bfd_vma got_offset, got_address, plt_address; |
e5a52504 MM |
6913 | bfd_vma got_displacement; |
6914 | asection * sgot; | |
6915 | ||
6916 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
6917 | BFD_ASSERT (sgot != NULL); | |
6918 | ||
b7693d02 DJ |
6919 | /* Get the offset into the .got.plt table of the entry that |
6920 | corresponds to this function. */ | |
6921 | got_offset = eh->plt_got_offset; | |
6922 | ||
6923 | /* Get the index in the procedure linkage table which | |
6924 | corresponds to this symbol. This is the index of this symbol | |
6925 | in all the symbols for which we are making plt entries. The | |
6926 | first three entries in .got.plt are reserved; after that | |
6927 | symbols appear in the same order as in .plt. */ | |
6928 | plt_index = (got_offset - 12) / 4; | |
e5a52504 | 6929 | |
00a97672 RS |
6930 | /* Calculate the address of the GOT entry. */ |
6931 | got_address = (sgot->output_section->vma | |
6932 | + sgot->output_offset | |
6933 | + got_offset); | |
5e681ec4 | 6934 | |
00a97672 RS |
6935 | /* ...and the address of the PLT entry. */ |
6936 | plt_address = (splt->output_section->vma | |
6937 | + splt->output_offset | |
6938 | + h->plt.offset); | |
5e681ec4 | 6939 | |
00a97672 RS |
6940 | if (htab->vxworks_p && info->shared) |
6941 | { | |
6942 | unsigned int i; | |
6943 | bfd_vma val; | |
6944 | ||
6945 | for (i = 0; i != htab->plt_entry_size / 4; i++) | |
6946 | { | |
6947 | val = elf32_arm_vxworks_shared_plt_entry[i]; | |
6948 | if (i == 2) | |
6949 | val |= got_address - sgot->output_section->vma; | |
6950 | if (i == 5) | |
6951 | val |= plt_index * RELOC_SIZE (htab); | |
6952 | bfd_put_32 (output_bfd, val, | |
6953 | htab->splt->contents + h->plt.offset + i * 4); | |
6954 | } | |
6955 | } | |
6956 | else if (htab->vxworks_p) | |
b7693d02 | 6957 | { |
00a97672 RS |
6958 | unsigned int i; |
6959 | bfd_vma val; | |
6960 | ||
6961 | for (i = 0; i != htab->plt_entry_size / 4; i++) | |
6962 | { | |
6963 | val = elf32_arm_vxworks_exec_plt_entry[i]; | |
6964 | if (i == 2) | |
6965 | val |= got_address; | |
6966 | if (i == 4) | |
6967 | val |= 0xffffff & -((h->plt.offset + i * 4 + 8) >> 2); | |
6968 | if (i == 5) | |
6969 | val |= plt_index * RELOC_SIZE (htab); | |
6970 | bfd_put_32 (output_bfd, val, | |
6971 | htab->splt->contents + h->plt.offset + i * 4); | |
6972 | } | |
6973 | ||
6974 | loc = (htab->srelplt2->contents | |
6975 | + (plt_index * 2 + 1) * RELOC_SIZE (htab)); | |
6976 | ||
6977 | /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation | |
6978 | referencing the GOT for this PLT entry. */ | |
6979 | rel.r_offset = plt_address + 8; | |
6980 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); | |
6981 | rel.r_addend = got_offset; | |
6982 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
6983 | loc += RELOC_SIZE (htab); | |
6984 | ||
6985 | /* Create the R_ARM_ABS32 relocation referencing the | |
6986 | beginning of the PLT for this GOT entry. */ | |
6987 | rel.r_offset = got_address; | |
6988 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32); | |
6989 | rel.r_addend = 0; | |
6990 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
b7693d02 | 6991 | } |
00a97672 RS |
6992 | else |
6993 | { | |
6994 | /* Calculate the displacement between the PLT slot and the | |
6995 | entry in the GOT. The eight-byte offset accounts for the | |
6996 | value produced by adding to pc in the first instruction | |
6997 | of the PLT stub. */ | |
6998 | got_displacement = got_address - (plt_address + 8); | |
b7693d02 | 6999 | |
00a97672 RS |
7000 | BFD_ASSERT ((got_displacement & 0xf0000000) == 0); |
7001 | ||
7002 | if (!htab->use_blx && eh->plt_thumb_refcount > 0) | |
7003 | { | |
7004 | bfd_put_16 (output_bfd, elf32_arm_plt_thumb_stub[0], | |
7005 | splt->contents + h->plt.offset - 4); | |
7006 | bfd_put_16 (output_bfd, elf32_arm_plt_thumb_stub[1], | |
7007 | splt->contents + h->plt.offset - 2); | |
7008 | } | |
7009 | ||
7010 | bfd_put_32 (output_bfd, | |
7011 | elf32_arm_plt_entry[0] | |
7012 | | ((got_displacement & 0x0ff00000) >> 20), | |
7013 | splt->contents + h->plt.offset + 0); | |
7014 | bfd_put_32 (output_bfd, | |
7015 | elf32_arm_plt_entry[1] | |
7016 | | ((got_displacement & 0x000ff000) >> 12), | |
7017 | splt->contents + h->plt.offset + 4); | |
7018 | bfd_put_32 (output_bfd, | |
7019 | elf32_arm_plt_entry[2] | |
7020 | | (got_displacement & 0x00000fff), | |
7021 | splt->contents + h->plt.offset + 8); | |
5e681ec4 | 7022 | #ifdef FOUR_WORD_PLT |
00a97672 RS |
7023 | bfd_put_32 (output_bfd, elf32_arm_plt_entry[3], |
7024 | splt->contents + h->plt.offset + 12); | |
5e681ec4 | 7025 | #endif |
00a97672 | 7026 | } |
252b5132 | 7027 | |
e5a52504 MM |
7028 | /* Fill in the entry in the global offset table. */ |
7029 | bfd_put_32 (output_bfd, | |
7030 | (splt->output_section->vma | |
7031 | + splt->output_offset), | |
7032 | sgot->contents + got_offset); | |
7033 | ||
00a97672 RS |
7034 | /* Fill in the entry in the .rel(a).plt section. */ |
7035 | rel.r_addend = 0; | |
7036 | rel.r_offset = got_address; | |
e5a52504 MM |
7037 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_JUMP_SLOT); |
7038 | } | |
57e8b36a | 7039 | |
00a97672 RS |
7040 | loc = srel->contents + plt_index * RELOC_SIZE (htab); |
7041 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
252b5132 | 7042 | |
f5385ebf | 7043 | if (!h->def_regular) |
252b5132 RH |
7044 | { |
7045 | /* Mark the symbol as undefined, rather than as defined in | |
7046 | the .plt section. Leave the value alone. */ | |
7047 | sym->st_shndx = SHN_UNDEF; | |
d982ba73 PB |
7048 | /* If the symbol is weak, we do need to clear the value. |
7049 | Otherwise, the PLT entry would provide a definition for | |
7050 | the symbol even if the symbol wasn't defined anywhere, | |
7051 | and so the symbol would never be NULL. */ | |
f5385ebf | 7052 | if (!h->ref_regular_nonweak) |
d982ba73 | 7053 | sym->st_value = 0; |
252b5132 RH |
7054 | } |
7055 | } | |
7056 | ||
ba93b8ac DJ |
7057 | if (h->got.offset != (bfd_vma) -1 |
7058 | && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_GD) == 0 | |
7059 | && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_IE) == 0) | |
252b5132 RH |
7060 | { |
7061 | asection * sgot; | |
7062 | asection * srel; | |
947216bf AM |
7063 | Elf_Internal_Rela rel; |
7064 | bfd_byte *loc; | |
00a97672 | 7065 | bfd_vma offset; |
252b5132 RH |
7066 | |
7067 | /* This symbol has an entry in the global offset table. Set it | |
7068 | up. */ | |
252b5132 | 7069 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
00a97672 | 7070 | srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".got")); |
252b5132 RH |
7071 | BFD_ASSERT (sgot != NULL && srel != NULL); |
7072 | ||
00a97672 RS |
7073 | offset = (h->got.offset & ~(bfd_vma) 1); |
7074 | rel.r_addend = 0; | |
252b5132 RH |
7075 | rel.r_offset = (sgot->output_section->vma |
7076 | + sgot->output_offset | |
00a97672 | 7077 | + offset); |
252b5132 | 7078 | |
5e681ec4 PB |
7079 | /* If this is a static link, or it is a -Bsymbolic link and the |
7080 | symbol is defined locally or was forced to be local because | |
7081 | of a version file, we just want to emit a RELATIVE reloc. | |
7082 | The entry in the global offset table will already have been | |
7083 | initialized in the relocate_section function. */ | |
252b5132 | 7084 | if (info->shared |
5e681ec4 PB |
7085 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
7086 | { | |
7087 | BFD_ASSERT((h->got.offset & 1) != 0); | |
7088 | rel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); | |
00a97672 RS |
7089 | if (!htab->use_rel) |
7090 | { | |
7091 | rel.r_addend = bfd_get_32 (output_bfd, sgot->contents + offset); | |
7092 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset); | |
7093 | } | |
5e681ec4 | 7094 | } |
252b5132 RH |
7095 | else |
7096 | { | |
5e681ec4 | 7097 | BFD_ASSERT((h->got.offset & 1) == 0); |
00a97672 | 7098 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset); |
252b5132 RH |
7099 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT); |
7100 | } | |
7101 | ||
00a97672 RS |
7102 | loc = srel->contents + srel->reloc_count++ * RELOC_SIZE (htab); |
7103 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
252b5132 RH |
7104 | } |
7105 | ||
f5385ebf | 7106 | if (h->needs_copy) |
252b5132 RH |
7107 | { |
7108 | asection * s; | |
947216bf AM |
7109 | Elf_Internal_Rela rel; |
7110 | bfd_byte *loc; | |
252b5132 RH |
7111 | |
7112 | /* This symbol needs a copy reloc. Set it up. */ | |
252b5132 RH |
7113 | BFD_ASSERT (h->dynindx != -1 |
7114 | && (h->root.type == bfd_link_hash_defined | |
7115 | || h->root.type == bfd_link_hash_defweak)); | |
7116 | ||
7117 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
00a97672 | 7118 | RELOC_SECTION (htab, ".bss")); |
252b5132 RH |
7119 | BFD_ASSERT (s != NULL); |
7120 | ||
00a97672 | 7121 | rel.r_addend = 0; |
252b5132 RH |
7122 | rel.r_offset = (h->root.u.def.value |
7123 | + h->root.u.def.section->output_section->vma | |
7124 | + h->root.u.def.section->output_offset); | |
7125 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY); | |
00a97672 RS |
7126 | loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab); |
7127 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
252b5132 RH |
7128 | } |
7129 | ||
00a97672 RS |
7130 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks, |
7131 | the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative | |
7132 | to the ".got" section. */ | |
252b5132 | 7133 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 |
00a97672 | 7134 | || (!htab->vxworks_p && h == htab->root.hgot)) |
252b5132 RH |
7135 | sym->st_shndx = SHN_ABS; |
7136 | ||
b34976b6 | 7137 | return TRUE; |
252b5132 RH |
7138 | } |
7139 | ||
7140 | /* Finish up the dynamic sections. */ | |
7141 | ||
b34976b6 | 7142 | static bfd_boolean |
57e8b36a | 7143 | elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info) |
252b5132 RH |
7144 | { |
7145 | bfd * dynobj; | |
7146 | asection * sgot; | |
7147 | asection * sdyn; | |
7148 | ||
7149 | dynobj = elf_hash_table (info)->dynobj; | |
7150 | ||
7151 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
229fcec5 | 7152 | BFD_ASSERT (elf32_arm_hash_table (info)->symbian_p || sgot != NULL); |
252b5132 RH |
7153 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
7154 | ||
7155 | if (elf_hash_table (info)->dynamic_sections_created) | |
7156 | { | |
7157 | asection *splt; | |
7158 | Elf32_External_Dyn *dyncon, *dynconend; | |
229fcec5 | 7159 | struct elf32_arm_link_hash_table *htab; |
252b5132 | 7160 | |
229fcec5 | 7161 | htab = elf32_arm_hash_table (info); |
252b5132 | 7162 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
24a1ba0f | 7163 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
252b5132 RH |
7164 | |
7165 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 7166 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
9b485d32 | 7167 | |
252b5132 RH |
7168 | for (; dyncon < dynconend; dyncon++) |
7169 | { | |
7170 | Elf_Internal_Dyn dyn; | |
7171 | const char * name; | |
7172 | asection * s; | |
7173 | ||
7174 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
7175 | ||
7176 | switch (dyn.d_tag) | |
7177 | { | |
229fcec5 MM |
7178 | unsigned int type; |
7179 | ||
252b5132 RH |
7180 | default: |
7181 | break; | |
7182 | ||
229fcec5 MM |
7183 | case DT_HASH: |
7184 | name = ".hash"; | |
7185 | goto get_vma_if_bpabi; | |
7186 | case DT_STRTAB: | |
7187 | name = ".dynstr"; | |
7188 | goto get_vma_if_bpabi; | |
7189 | case DT_SYMTAB: | |
7190 | name = ".dynsym"; | |
7191 | goto get_vma_if_bpabi; | |
c0042f5d MM |
7192 | case DT_VERSYM: |
7193 | name = ".gnu.version"; | |
7194 | goto get_vma_if_bpabi; | |
7195 | case DT_VERDEF: | |
7196 | name = ".gnu.version_d"; | |
7197 | goto get_vma_if_bpabi; | |
7198 | case DT_VERNEED: | |
7199 | name = ".gnu.version_r"; | |
7200 | goto get_vma_if_bpabi; | |
7201 | ||
252b5132 RH |
7202 | case DT_PLTGOT: |
7203 | name = ".got"; | |
7204 | goto get_vma; | |
7205 | case DT_JMPREL: | |
00a97672 | 7206 | name = RELOC_SECTION (htab, ".plt"); |
252b5132 RH |
7207 | get_vma: |
7208 | s = bfd_get_section_by_name (output_bfd, name); | |
7209 | BFD_ASSERT (s != NULL); | |
229fcec5 MM |
7210 | if (!htab->symbian_p) |
7211 | dyn.d_un.d_ptr = s->vma; | |
7212 | else | |
7213 | /* In the BPABI, tags in the PT_DYNAMIC section point | |
7214 | at the file offset, not the memory address, for the | |
7215 | convenience of the post linker. */ | |
7216 | dyn.d_un.d_ptr = s->filepos; | |
252b5132 RH |
7217 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
7218 | break; | |
7219 | ||
229fcec5 MM |
7220 | get_vma_if_bpabi: |
7221 | if (htab->symbian_p) | |
7222 | goto get_vma; | |
7223 | break; | |
7224 | ||
252b5132 | 7225 | case DT_PLTRELSZ: |
00a97672 RS |
7226 | s = bfd_get_section_by_name (output_bfd, |
7227 | RELOC_SECTION (htab, ".plt")); | |
252b5132 | 7228 | BFD_ASSERT (s != NULL); |
eea6121a | 7229 | dyn.d_un.d_val = s->size; |
252b5132 RH |
7230 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
7231 | break; | |
229fcec5 | 7232 | |
252b5132 | 7233 | case DT_RELSZ: |
00a97672 | 7234 | case DT_RELASZ: |
229fcec5 MM |
7235 | if (!htab->symbian_p) |
7236 | { | |
7237 | /* My reading of the SVR4 ABI indicates that the | |
7238 | procedure linkage table relocs (DT_JMPREL) should be | |
7239 | included in the overall relocs (DT_REL). This is | |
7240 | what Solaris does. However, UnixWare can not handle | |
7241 | that case. Therefore, we override the DT_RELSZ entry | |
7242 | here to make it not include the JMPREL relocs. Since | |
00a97672 | 7243 | the linker script arranges for .rel(a).plt to follow all |
229fcec5 MM |
7244 | other relocation sections, we don't have to worry |
7245 | about changing the DT_REL entry. */ | |
00a97672 RS |
7246 | s = bfd_get_section_by_name (output_bfd, |
7247 | RELOC_SECTION (htab, ".plt")); | |
229fcec5 MM |
7248 | if (s != NULL) |
7249 | dyn.d_un.d_val -= s->size; | |
7250 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
7251 | break; | |
7252 | } | |
7253 | /* Fall through */ | |
7254 | ||
7255 | case DT_REL: | |
7256 | case DT_RELA: | |
229fcec5 MM |
7257 | /* In the BPABI, the DT_REL tag must point at the file |
7258 | offset, not the VMA, of the first relocation | |
7259 | section. So, we use code similar to that in | |
7260 | elflink.c, but do not check for SHF_ALLOC on the | |
7261 | relcoation section, since relocations sections are | |
7262 | never allocated under the BPABI. The comments above | |
7263 | about Unixware notwithstanding, we include all of the | |
7264 | relocations here. */ | |
7265 | if (htab->symbian_p) | |
7266 | { | |
7267 | unsigned int i; | |
7268 | type = ((dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ) | |
7269 | ? SHT_REL : SHT_RELA); | |
7270 | dyn.d_un.d_val = 0; | |
7271 | for (i = 1; i < elf_numsections (output_bfd); i++) | |
7272 | { | |
7273 | Elf_Internal_Shdr *hdr | |
7274 | = elf_elfsections (output_bfd)[i]; | |
7275 | if (hdr->sh_type == type) | |
7276 | { | |
7277 | if (dyn.d_tag == DT_RELSZ | |
7278 | || dyn.d_tag == DT_RELASZ) | |
7279 | dyn.d_un.d_val += hdr->sh_size; | |
de52dba4 AM |
7280 | else if ((ufile_ptr) hdr->sh_offset |
7281 | <= dyn.d_un.d_val - 1) | |
229fcec5 MM |
7282 | dyn.d_un.d_val = hdr->sh_offset; |
7283 | } | |
7284 | } | |
7285 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
7286 | } | |
252b5132 | 7287 | break; |
88f7bcd5 NC |
7288 | |
7289 | /* Set the bottom bit of DT_INIT/FINI if the | |
7290 | corresponding function is Thumb. */ | |
7291 | case DT_INIT: | |
7292 | name = info->init_function; | |
7293 | goto get_sym; | |
7294 | case DT_FINI: | |
7295 | name = info->fini_function; | |
7296 | get_sym: | |
7297 | /* If it wasn't set by elf_bfd_final_link | |
4cc11e76 | 7298 | then there is nothing to adjust. */ |
88f7bcd5 NC |
7299 | if (dyn.d_un.d_val != 0) |
7300 | { | |
7301 | struct elf_link_hash_entry * eh; | |
7302 | ||
7303 | eh = elf_link_hash_lookup (elf_hash_table (info), name, | |
b34976b6 | 7304 | FALSE, FALSE, TRUE); |
88f7bcd5 NC |
7305 | if (eh != (struct elf_link_hash_entry *) NULL |
7306 | && ELF_ST_TYPE (eh->type) == STT_ARM_TFUNC) | |
7307 | { | |
7308 | dyn.d_un.d_val |= 1; | |
b34976b6 | 7309 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
88f7bcd5 NC |
7310 | } |
7311 | } | |
7312 | break; | |
252b5132 RH |
7313 | } |
7314 | } | |
7315 | ||
24a1ba0f | 7316 | /* Fill in the first entry in the procedure linkage table. */ |
e5a52504 | 7317 | if (splt->size > 0 && elf32_arm_hash_table (info)->plt_header_size) |
f7a74f8c | 7318 | { |
00a97672 RS |
7319 | const bfd_vma *plt0_entry; |
7320 | bfd_vma got_address, plt_address, got_displacement; | |
7321 | ||
7322 | /* Calculate the addresses of the GOT and PLT. */ | |
7323 | got_address = sgot->output_section->vma + sgot->output_offset; | |
7324 | plt_address = splt->output_section->vma + splt->output_offset; | |
7325 | ||
7326 | if (htab->vxworks_p) | |
7327 | { | |
7328 | /* The VxWorks GOT is relocated by the dynamic linker. | |
7329 | Therefore, we must emit relocations rather than simply | |
7330 | computing the values now. */ | |
7331 | Elf_Internal_Rela rel; | |
7332 | ||
7333 | plt0_entry = elf32_arm_vxworks_exec_plt0_entry; | |
7334 | bfd_put_32 (output_bfd, plt0_entry[0], splt->contents + 0); | |
7335 | bfd_put_32 (output_bfd, plt0_entry[1], splt->contents + 4); | |
7336 | bfd_put_32 (output_bfd, plt0_entry[2], splt->contents + 8); | |
7337 | bfd_put_32 (output_bfd, got_address, splt->contents + 12); | |
7338 | ||
7339 | /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */ | |
7340 | rel.r_offset = plt_address + 12; | |
7341 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); | |
7342 | rel.r_addend = 0; | |
7343 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, | |
7344 | htab->srelplt2->contents); | |
7345 | } | |
7346 | else | |
7347 | { | |
7348 | got_displacement = got_address - (plt_address + 16); | |
7349 | ||
7350 | plt0_entry = elf32_arm_plt0_entry; | |
7351 | bfd_put_32 (output_bfd, plt0_entry[0], splt->contents + 0); | |
7352 | bfd_put_32 (output_bfd, plt0_entry[1], splt->contents + 4); | |
7353 | bfd_put_32 (output_bfd, plt0_entry[2], splt->contents + 8); | |
7354 | bfd_put_32 (output_bfd, plt0_entry[3], splt->contents + 12); | |
5e681ec4 | 7355 | |
5e681ec4 | 7356 | #ifdef FOUR_WORD_PLT |
00a97672 RS |
7357 | /* The displacement value goes in the otherwise-unused |
7358 | last word of the second entry. */ | |
7359 | bfd_put_32 (output_bfd, got_displacement, splt->contents + 28); | |
5e681ec4 | 7360 | #else |
00a97672 | 7361 | bfd_put_32 (output_bfd, got_displacement, splt->contents + 16); |
5e681ec4 | 7362 | #endif |
00a97672 | 7363 | } |
f7a74f8c | 7364 | } |
252b5132 RH |
7365 | |
7366 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
7367 | really seem like the right value. */ | |
7368 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; | |
00a97672 RS |
7369 | |
7370 | if (htab->vxworks_p && !info->shared && htab->splt->size > 0) | |
7371 | { | |
7372 | /* Correct the .rel(a).plt.unloaded relocations. They will have | |
7373 | incorrect symbol indexes. */ | |
7374 | int num_plts; | |
eed62c48 | 7375 | unsigned char *p; |
00a97672 RS |
7376 | |
7377 | num_plts = ((htab->splt->size - htab->plt_header_size) | |
7378 | / htab->plt_entry_size); | |
7379 | p = htab->srelplt2->contents + RELOC_SIZE (htab); | |
7380 | ||
7381 | for (; num_plts; num_plts--) | |
7382 | { | |
7383 | Elf_Internal_Rela rel; | |
7384 | ||
7385 | SWAP_RELOC_IN (htab) (output_bfd, p, &rel); | |
7386 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); | |
7387 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, p); | |
7388 | p += RELOC_SIZE (htab); | |
7389 | ||
7390 | SWAP_RELOC_IN (htab) (output_bfd, p, &rel); | |
7391 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32); | |
7392 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, p); | |
7393 | p += RELOC_SIZE (htab); | |
7394 | } | |
7395 | } | |
252b5132 RH |
7396 | } |
7397 | ||
7398 | /* Fill in the first three entries in the global offset table. */ | |
229fcec5 | 7399 | if (sgot) |
252b5132 | 7400 | { |
229fcec5 MM |
7401 | if (sgot->size > 0) |
7402 | { | |
7403 | if (sdyn == NULL) | |
7404 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
7405 | else | |
7406 | bfd_put_32 (output_bfd, | |
7407 | sdyn->output_section->vma + sdyn->output_offset, | |
7408 | sgot->contents); | |
7409 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
7410 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
7411 | } | |
252b5132 | 7412 | |
229fcec5 MM |
7413 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; |
7414 | } | |
252b5132 | 7415 | |
b34976b6 | 7416 | return TRUE; |
252b5132 RH |
7417 | } |
7418 | ||
ba96a88f | 7419 | static void |
57e8b36a | 7420 | elf32_arm_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED) |
ba96a88f | 7421 | { |
9b485d32 | 7422 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ |
e489d0ae | 7423 | struct elf32_arm_link_hash_table *globals; |
ba96a88f NC |
7424 | |
7425 | i_ehdrp = elf_elfheader (abfd); | |
7426 | ||
94a3258f PB |
7427 | if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_UNKNOWN) |
7428 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_ARM; | |
7429 | else | |
7430 | i_ehdrp->e_ident[EI_OSABI] = 0; | |
ba96a88f | 7431 | i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION; |
e489d0ae | 7432 | |
93204d3a PB |
7433 | if (link_info) |
7434 | { | |
7435 | globals = elf32_arm_hash_table (link_info); | |
7436 | if (globals->byteswap_code) | |
7437 | i_ehdrp->e_flags |= EF_ARM_BE8; | |
7438 | } | |
ba96a88f NC |
7439 | } |
7440 | ||
99e4ae17 | 7441 | static enum elf_reloc_type_class |
57e8b36a | 7442 | elf32_arm_reloc_type_class (const Elf_Internal_Rela *rela) |
99e4ae17 | 7443 | { |
f51e552e | 7444 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
99e4ae17 AJ |
7445 | { |
7446 | case R_ARM_RELATIVE: | |
7447 | return reloc_class_relative; | |
7448 | case R_ARM_JUMP_SLOT: | |
7449 | return reloc_class_plt; | |
7450 | case R_ARM_COPY: | |
7451 | return reloc_class_copy; | |
7452 | default: | |
7453 | return reloc_class_normal; | |
7454 | } | |
7455 | } | |
7456 | ||
e16bb312 NC |
7457 | /* Set the right machine number for an Arm ELF file. */ |
7458 | ||
7459 | static bfd_boolean | |
57e8b36a | 7460 | elf32_arm_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr) |
e16bb312 NC |
7461 | { |
7462 | if (hdr->sh_type == SHT_NOTE) | |
7463 | *flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
7464 | ||
7465 | return TRUE; | |
7466 | } | |
7467 | ||
e489d0ae | 7468 | static void |
57e8b36a | 7469 | elf32_arm_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) |
e16bb312 | 7470 | { |
5a6c6817 | 7471 | bfd_arm_update_notes (abfd, ARM_NOTE_SECTION); |
e16bb312 NC |
7472 | } |
7473 | ||
40a18ebd NC |
7474 | /* Return TRUE if this is an unwinding table entry. */ |
7475 | ||
7476 | static bfd_boolean | |
7477 | is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name) | |
7478 | { | |
7479 | size_t len1, len2; | |
7480 | ||
7481 | len1 = sizeof (ELF_STRING_ARM_unwind) - 1; | |
7482 | len2 = sizeof (ELF_STRING_ARM_unwind_once) - 1; | |
7483 | return (strncmp (name, ELF_STRING_ARM_unwind, len1) == 0 | |
7484 | || strncmp (name, ELF_STRING_ARM_unwind_once, len2) == 0); | |
7485 | } | |
7486 | ||
7487 | ||
7488 | /* Set the type and flags for an ARM section. We do this by | |
7489 | the section name, which is a hack, but ought to work. */ | |
7490 | ||
7491 | static bfd_boolean | |
7492 | elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec) | |
7493 | { | |
7494 | const char * name; | |
7495 | ||
7496 | name = bfd_get_section_name (abfd, sec); | |
7497 | ||
7498 | if (is_arm_elf_unwind_section_name (abfd, name)) | |
7499 | { | |
7500 | hdr->sh_type = SHT_ARM_EXIDX; | |
7501 | hdr->sh_flags |= SHF_LINK_ORDER; | |
7502 | } | |
ee065d83 PB |
7503 | else if (strcmp(name, ".ARM.attributes") == 0) |
7504 | { | |
7505 | hdr->sh_type = SHT_ARM_ATTRIBUTES; | |
7506 | } | |
40a18ebd NC |
7507 | return TRUE; |
7508 | } | |
7509 | ||
ee065d83 PB |
7510 | /* Parse an Arm EABI attributes section. */ |
7511 | static void | |
7512 | elf32_arm_parse_attributes (bfd *abfd, Elf_Internal_Shdr * hdr) | |
7513 | { | |
7514 | bfd_byte *contents; | |
7515 | bfd_byte *p; | |
7516 | bfd_vma len; | |
7517 | ||
7518 | contents = bfd_malloc (hdr->sh_size); | |
7519 | if (!contents) | |
7520 | return; | |
7521 | if (!bfd_get_section_contents (abfd, hdr->bfd_section, contents, 0, | |
7522 | hdr->sh_size)) | |
7523 | { | |
7524 | free (contents); | |
7525 | return; | |
7526 | } | |
7527 | p = contents; | |
7528 | if (*(p++) == 'A') | |
7529 | { | |
7530 | len = hdr->sh_size - 1; | |
7531 | while (len > 0) | |
7532 | { | |
7533 | int namelen; | |
7534 | bfd_vma section_len; | |
7535 | ||
7536 | section_len = bfd_get_32 (abfd, p); | |
7537 | p += 4; | |
7538 | if (section_len > len) | |
7539 | section_len = len; | |
7540 | len -= section_len; | |
7541 | namelen = strlen ((char *)p) + 1; | |
7542 | section_len -= namelen + 4; | |
7543 | if (strcmp((char *)p, "aeabi") != 0) | |
7544 | { | |
7545 | /* Vendor section. Ignore it. */ | |
7546 | p += namelen + section_len; | |
7547 | } | |
7548 | else | |
7549 | { | |
7550 | p += namelen; | |
7551 | while (section_len > 0) | |
7552 | { | |
7553 | int tag; | |
7554 | unsigned int n; | |
7555 | unsigned int val; | |
7556 | bfd_vma subsection_len; | |
7557 | bfd_byte *end; | |
7558 | ||
7559 | tag = read_unsigned_leb128 (abfd, p, &n); | |
7560 | p += n; | |
7561 | subsection_len = bfd_get_32 (abfd, p); | |
7562 | p += 4; | |
7563 | if (subsection_len > section_len) | |
7564 | subsection_len = section_len; | |
7565 | section_len -= subsection_len; | |
7566 | subsection_len -= n + 4; | |
7567 | end = p + subsection_len; | |
7568 | switch (tag) | |
7569 | { | |
7570 | case Tag_File: | |
7571 | while (p < end) | |
7572 | { | |
7573 | bfd_boolean is_string; | |
7574 | ||
7575 | tag = read_unsigned_leb128 (abfd, p, &n); | |
7576 | p += n; | |
7577 | if (tag == 4 || tag == 5) | |
7578 | is_string = 1; | |
7579 | else if (tag < 32) | |
7580 | is_string = 0; | |
7581 | else | |
7582 | is_string = (tag & 1) != 0; | |
7583 | if (tag == Tag_compatibility) | |
7584 | { | |
7585 | val = read_unsigned_leb128 (abfd, p, &n); | |
7586 | p += n; | |
7587 | elf32_arm_add_eabi_attr_compat (abfd, val, | |
7588 | (char *)p); | |
7589 | p += strlen ((char *)p) + 1; | |
7590 | } | |
7591 | else if (is_string) | |
7592 | { | |
7593 | elf32_arm_add_eabi_attr_string (abfd, tag, | |
7594 | (char *)p); | |
7595 | p += strlen ((char *)p) + 1; | |
7596 | } | |
7597 | else | |
7598 | { | |
7599 | val = read_unsigned_leb128 (abfd, p, &n); | |
7600 | p += n; | |
7601 | elf32_arm_add_eabi_attr_int (abfd, tag, val); | |
7602 | } | |
7603 | } | |
7604 | break; | |
7605 | case Tag_Section: | |
7606 | case Tag_Symbol: | |
7607 | /* Don't have anywhere convenient to attach these. | |
7608 | Fall through for now. */ | |
7609 | default: | |
7610 | /* Ignore things we don't kow about. */ | |
7611 | p += subsection_len; | |
7612 | subsection_len = 0; | |
7613 | break; | |
7614 | } | |
7615 | } | |
7616 | } | |
7617 | } | |
7618 | } | |
7619 | free (contents); | |
7620 | } | |
7621 | ||
6dc132d9 L |
7622 | /* Handle an ARM specific section when reading an object file. This is |
7623 | called when bfd_section_from_shdr finds a section with an unknown | |
7624 | type. */ | |
40a18ebd NC |
7625 | |
7626 | static bfd_boolean | |
7627 | elf32_arm_section_from_shdr (bfd *abfd, | |
7628 | Elf_Internal_Shdr * hdr, | |
6dc132d9 L |
7629 | const char *name, |
7630 | int shindex) | |
40a18ebd NC |
7631 | { |
7632 | /* There ought to be a place to keep ELF backend specific flags, but | |
7633 | at the moment there isn't one. We just keep track of the | |
7634 | sections by their name, instead. Fortunately, the ABI gives | |
7635 | names for all the ARM specific sections, so we will probably get | |
7636 | away with this. */ | |
7637 | switch (hdr->sh_type) | |
7638 | { | |
7639 | case SHT_ARM_EXIDX: | |
0951f019 RE |
7640 | case SHT_ARM_PREEMPTMAP: |
7641 | case SHT_ARM_ATTRIBUTES: | |
40a18ebd NC |
7642 | break; |
7643 | ||
7644 | default: | |
7645 | return FALSE; | |
7646 | } | |
7647 | ||
6dc132d9 | 7648 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
40a18ebd NC |
7649 | return FALSE; |
7650 | ||
ee065d83 PB |
7651 | if (hdr->sh_type == SHT_ARM_ATTRIBUTES) |
7652 | elf32_arm_parse_attributes(abfd, hdr); | |
40a18ebd NC |
7653 | return TRUE; |
7654 | } | |
e489d0ae | 7655 | |
8e3de13a NC |
7656 | /* A structure used to record a list of sections, independently |
7657 | of the next and prev fields in the asection structure. */ | |
7658 | typedef struct section_list | |
7659 | { | |
7660 | asection * sec; | |
7661 | struct section_list * next; | |
7662 | struct section_list * prev; | |
7663 | } | |
7664 | section_list; | |
7665 | ||
7666 | /* Unfortunately we need to keep a list of sections for which | |
7667 | an _arm_elf_section_data structure has been allocated. This | |
7668 | is because it is possible for functions like elf32_arm_write_section | |
7669 | to be called on a section which has had an elf_data_structure | |
7670 | allocated for it (and so the used_by_bfd field is valid) but | |
7671 | for which the ARM extended version of this structure - the | |
7672 | _arm_elf_section_data structure - has not been allocated. */ | |
7673 | static section_list * sections_with_arm_elf_section_data = NULL; | |
7674 | ||
7675 | static void | |
957c6e41 | 7676 | record_section_with_arm_elf_section_data (asection * sec) |
8e3de13a NC |
7677 | { |
7678 | struct section_list * entry; | |
7679 | ||
957c6e41 | 7680 | entry = bfd_malloc (sizeof (* entry)); |
8e3de13a NC |
7681 | if (entry == NULL) |
7682 | return; | |
7683 | entry->sec = sec; | |
7684 | entry->next = sections_with_arm_elf_section_data; | |
7685 | entry->prev = NULL; | |
7686 | if (entry->next != NULL) | |
7687 | entry->next->prev = entry; | |
7688 | sections_with_arm_elf_section_data = entry; | |
7689 | } | |
7690 | ||
44444f50 NC |
7691 | static struct section_list * |
7692 | find_arm_elf_section_entry (asection * sec) | |
8e3de13a NC |
7693 | { |
7694 | struct section_list * entry; | |
bd4aae00 | 7695 | static struct section_list * last_entry = NULL; |
8e3de13a | 7696 | |
bd4aae00 NC |
7697 | /* This is a short cut for the typical case where the sections are added |
7698 | to the sections_with_arm_elf_section_data list in forward order and | |
7699 | then looked up here in backwards order. This makes a real difference | |
7700 | to the ld-srec/sec64k.exp linker test. */ | |
44444f50 | 7701 | entry = sections_with_arm_elf_section_data; |
bd4aae00 NC |
7702 | if (last_entry != NULL) |
7703 | { | |
7704 | if (last_entry->sec == sec) | |
44444f50 NC |
7705 | entry = last_entry; |
7706 | else if (last_entry->next != NULL | |
7707 | && last_entry->next->sec == sec) | |
7708 | entry = last_entry->next; | |
bd4aae00 | 7709 | } |
44444f50 NC |
7710 | |
7711 | for (; entry; entry = entry->next) | |
8e3de13a | 7712 | if (entry->sec == sec) |
44444f50 | 7713 | break; |
bd4aae00 | 7714 | |
44444f50 NC |
7715 | if (entry) |
7716 | /* Record the entry prior to this one - it is the entry we are most | |
7717 | likely to want to locate next time. Also this way if we have been | |
7718 | called from unrecord_section_with_arm_elf_section_data() we will not | |
7719 | be caching a pointer that is about to be freed. */ | |
7720 | last_entry = entry->prev; | |
7721 | ||
7722 | return entry; | |
7723 | } | |
7724 | ||
7725 | static _arm_elf_section_data * | |
7726 | get_arm_elf_section_data (asection * sec) | |
7727 | { | |
7728 | struct section_list * entry; | |
7729 | ||
7730 | entry = find_arm_elf_section_entry (sec); | |
7731 | ||
7732 | if (entry) | |
7733 | return elf32_arm_section_data (entry->sec); | |
7734 | else | |
7735 | return NULL; | |
8e3de13a NC |
7736 | } |
7737 | ||
7738 | static void | |
7739 | unrecord_section_with_arm_elf_section_data (asection * sec) | |
7740 | { | |
7741 | struct section_list * entry; | |
7742 | ||
44444f50 NC |
7743 | entry = find_arm_elf_section_entry (sec); |
7744 | ||
7745 | if (entry) | |
7746 | { | |
7747 | if (entry->prev != NULL) | |
7748 | entry->prev->next = entry->next; | |
7749 | if (entry->next != NULL) | |
7750 | entry->next->prev = entry->prev; | |
7751 | if (entry == sections_with_arm_elf_section_data) | |
7752 | sections_with_arm_elf_section_data = entry->next; | |
7753 | free (entry); | |
7754 | } | |
8e3de13a NC |
7755 | } |
7756 | ||
e489d0ae PB |
7757 | /* Called for each symbol. Builds a section map based on mapping symbols. |
7758 | Does not alter any of the symbols. */ | |
7759 | ||
7760 | static bfd_boolean | |
7761 | elf32_arm_output_symbol_hook (struct bfd_link_info *info, | |
7762 | const char *name, | |
7763 | Elf_Internal_Sym *elfsym, | |
7764 | asection *input_sec, | |
00a97672 | 7765 | struct elf_link_hash_entry *h) |
e489d0ae PB |
7766 | { |
7767 | int mapcount; | |
7768 | elf32_arm_section_map *map; | |
8e3de13a NC |
7769 | elf32_arm_section_map *newmap; |
7770 | _arm_elf_section_data *arm_data; | |
e489d0ae PB |
7771 | struct elf32_arm_link_hash_table *globals; |
7772 | ||
00a97672 RS |
7773 | globals = elf32_arm_hash_table (info); |
7774 | if (globals->vxworks_p | |
7775 | && !elf_vxworks_link_output_symbol_hook (info, name, elfsym, | |
7776 | input_sec, h)) | |
7777 | return FALSE; | |
7778 | ||
e489d0ae PB |
7779 | /* Only do this on final link. */ |
7780 | if (info->relocatable) | |
7781 | return TRUE; | |
7782 | ||
7783 | /* Only build a map if we need to byteswap code. */ | |
e489d0ae PB |
7784 | if (!globals->byteswap_code) |
7785 | return TRUE; | |
7786 | ||
7787 | /* We only want mapping symbols. */ | |
05ea83ed | 7788 | if (! bfd_is_arm_mapping_symbol_name (name)) |
e489d0ae PB |
7789 | return TRUE; |
7790 | ||
8e3de13a NC |
7791 | /* If this section has not been allocated an _arm_elf_section_data |
7792 | structure then we cannot record anything. */ | |
7793 | arm_data = get_arm_elf_section_data (input_sec); | |
7794 | if (arm_data == NULL) | |
7795 | return TRUE; | |
7796 | ||
7797 | mapcount = arm_data->mapcount + 1; | |
7798 | map = arm_data->map; | |
d7f735da | 7799 | |
e489d0ae PB |
7800 | /* TODO: This may be inefficient, but we probably don't usually have many |
7801 | mapping symbols per section. */ | |
8e3de13a NC |
7802 | newmap = bfd_realloc (map, mapcount * sizeof (* map)); |
7803 | if (newmap != NULL) | |
7804 | { | |
7805 | arm_data->map = newmap; | |
7806 | arm_data->mapcount = mapcount; | |
7807 | ||
d7f735da NC |
7808 | newmap[mapcount - 1].vma = elfsym->st_value; |
7809 | newmap[mapcount - 1].type = name[1]; | |
8e3de13a | 7810 | } |
57e8b36a | 7811 | |
e489d0ae PB |
7812 | return TRUE; |
7813 | } | |
7814 | ||
e489d0ae PB |
7815 | /* Allocate target specific section data. */ |
7816 | ||
7817 | static bfd_boolean | |
7818 | elf32_arm_new_section_hook (bfd *abfd, asection *sec) | |
7819 | { | |
8e3de13a | 7820 | _arm_elf_section_data *sdata; |
e489d0ae PB |
7821 | bfd_size_type amt = sizeof (*sdata); |
7822 | ||
7823 | sdata = bfd_zalloc (abfd, amt); | |
7824 | if (sdata == NULL) | |
7825 | return FALSE; | |
7826 | sec->used_by_bfd = sdata; | |
7827 | ||
957c6e41 | 7828 | record_section_with_arm_elf_section_data (sec); |
8e3de13a | 7829 | |
e489d0ae PB |
7830 | return _bfd_elf_new_section_hook (abfd, sec); |
7831 | } | |
7832 | ||
7833 | ||
7834 | /* Used to order a list of mapping symbols by address. */ | |
7835 | ||
7836 | static int | |
7837 | elf32_arm_compare_mapping (const void * a, const void * b) | |
7838 | { | |
7839 | return ((const elf32_arm_section_map *) a)->vma | |
7840 | > ((const elf32_arm_section_map *) b)->vma; | |
7841 | } | |
7842 | ||
7843 | ||
7844 | /* Do code byteswapping. Return FALSE afterwards so that the section is | |
7845 | written out as normal. */ | |
7846 | ||
7847 | static bfd_boolean | |
7848 | elf32_arm_write_section (bfd *output_bfd ATTRIBUTE_UNUSED, asection *sec, | |
7849 | bfd_byte *contents) | |
7850 | { | |
7851 | int mapcount; | |
8e3de13a | 7852 | _arm_elf_section_data *arm_data; |
e489d0ae PB |
7853 | elf32_arm_section_map *map; |
7854 | bfd_vma ptr; | |
7855 | bfd_vma end; | |
7856 | bfd_vma offset; | |
7857 | bfd_byte tmp; | |
7858 | int i; | |
57e8b36a | 7859 | |
8e3de13a NC |
7860 | /* If this section has not been allocated an _arm_elf_section_data |
7861 | structure then we cannot record anything. */ | |
7862 | arm_data = get_arm_elf_section_data (sec); | |
7863 | if (arm_data == NULL) | |
7864 | return FALSE; | |
7865 | ||
7866 | mapcount = arm_data->mapcount; | |
7867 | map = arm_data->map; | |
e489d0ae PB |
7868 | |
7869 | if (mapcount == 0) | |
7870 | return FALSE; | |
7871 | ||
8e3de13a | 7872 | qsort (map, mapcount, sizeof (* map), elf32_arm_compare_mapping); |
e489d0ae PB |
7873 | |
7874 | offset = sec->output_section->vma + sec->output_offset; | |
7875 | ptr = map[0].vma - offset; | |
7876 | for (i = 0; i < mapcount; i++) | |
7877 | { | |
7878 | if (i == mapcount - 1) | |
eea6121a | 7879 | end = sec->size; |
e489d0ae PB |
7880 | else |
7881 | end = map[i + 1].vma - offset; | |
57e8b36a | 7882 | |
e489d0ae PB |
7883 | switch (map[i].type) |
7884 | { | |
7885 | case 'a': | |
7886 | /* Byte swap code words. */ | |
7887 | while (ptr + 3 < end) | |
7888 | { | |
7889 | tmp = contents[ptr]; | |
7890 | contents[ptr] = contents[ptr + 3]; | |
7891 | contents[ptr + 3] = tmp; | |
7892 | tmp = contents[ptr + 1]; | |
7893 | contents[ptr + 1] = contents[ptr + 2]; | |
7894 | contents[ptr + 2] = tmp; | |
7895 | ptr += 4; | |
7896 | } | |
7897 | break; | |
7898 | ||
7899 | case 't': | |
7900 | /* Byte swap code halfwords. */ | |
7901 | while (ptr + 1 < end) | |
7902 | { | |
7903 | tmp = contents[ptr]; | |
7904 | contents[ptr] = contents[ptr + 1]; | |
7905 | contents[ptr + 1] = tmp; | |
7906 | ptr += 2; | |
7907 | } | |
7908 | break; | |
7909 | ||
7910 | case 'd': | |
7911 | /* Leave data alone. */ | |
7912 | break; | |
7913 | } | |
7914 | ptr = end; | |
7915 | } | |
8e3de13a | 7916 | |
93204d3a | 7917 | free (map); |
8e3de13a NC |
7918 | arm_data->mapcount = 0; |
7919 | arm_data->map = NULL; | |
7920 | unrecord_section_with_arm_elf_section_data (sec); | |
7921 | ||
e489d0ae PB |
7922 | return FALSE; |
7923 | } | |
7924 | ||
957c6e41 NC |
7925 | static void |
7926 | unrecord_section_via_map_over_sections (bfd * abfd ATTRIBUTE_UNUSED, | |
7927 | asection * sec, | |
7928 | void * ignore ATTRIBUTE_UNUSED) | |
7929 | { | |
7930 | unrecord_section_with_arm_elf_section_data (sec); | |
7931 | } | |
7932 | ||
7933 | static bfd_boolean | |
7934 | elf32_arm_close_and_cleanup (bfd * abfd) | |
7935 | { | |
7936 | bfd_map_over_sections (abfd, unrecord_section_via_map_over_sections, NULL); | |
7937 | ||
7938 | return _bfd_elf_close_and_cleanup (abfd); | |
7939 | } | |
7940 | ||
b7693d02 DJ |
7941 | /* Display STT_ARM_TFUNC symbols as functions. */ |
7942 | ||
7943 | static void | |
7944 | elf32_arm_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, | |
7945 | asymbol *asym) | |
7946 | { | |
7947 | elf_symbol_type *elfsym = (elf_symbol_type *) asym; | |
7948 | ||
7949 | if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_ARM_TFUNC) | |
7950 | elfsym->symbol.flags |= BSF_FUNCTION; | |
7951 | } | |
7952 | ||
0beaef2b PB |
7953 | |
7954 | /* Mangle thumb function symbols as we read them in. */ | |
7955 | ||
7956 | static void | |
7957 | elf32_arm_swap_symbol_in (bfd * abfd, | |
7958 | const void *psrc, | |
7959 | const void *pshn, | |
7960 | Elf_Internal_Sym *dst) | |
7961 | { | |
7962 | bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst); | |
7963 | ||
7964 | /* New EABI objects mark thumb function symbols by setting the low bit of | |
7965 | the address. Turn these into STT_ARM_TFUNC. */ | |
7966 | if (ELF_ST_TYPE (dst->st_info) == STT_FUNC | |
7967 | && (dst->st_value & 1)) | |
7968 | { | |
7969 | dst->st_info = ELF_ST_INFO (ELF_ST_BIND (dst->st_info), STT_ARM_TFUNC); | |
7970 | dst->st_value &= ~(bfd_vma) 1; | |
7971 | } | |
7972 | } | |
7973 | ||
7974 | ||
7975 | /* Mangle thumb function symbols as we write them out. */ | |
7976 | ||
7977 | static void | |
7978 | elf32_arm_swap_symbol_out (bfd *abfd, | |
7979 | const Elf_Internal_Sym *src, | |
7980 | void *cdst, | |
7981 | void *shndx) | |
7982 | { | |
7983 | Elf_Internal_Sym newsym; | |
7984 | ||
7985 | /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit | |
7986 | of the address set, as per the new EABI. We do this unconditionally | |
7987 | because objcopy does not set the elf header flags until after | |
7988 | it writes out the symbol table. */ | |
7989 | if (ELF_ST_TYPE (src->st_info) == STT_ARM_TFUNC) | |
7990 | { | |
7991 | newsym = *src; | |
7992 | newsym.st_info = ELF_ST_INFO (ELF_ST_BIND (src->st_info), STT_FUNC); | |
7993 | newsym.st_value |= 1; | |
7994 | ||
7995 | src = &newsym; | |
7996 | } | |
7997 | bfd_elf32_swap_symbol_out (abfd, src, cdst, shndx); | |
7998 | } | |
7999 | ||
b294bdf8 MM |
8000 | /* Add the PT_ARM_EXIDX program header. */ |
8001 | ||
8002 | static bfd_boolean | |
8003 | elf32_arm_modify_segment_map (bfd *abfd, | |
8004 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
8005 | { | |
8006 | struct elf_segment_map *m; | |
8007 | asection *sec; | |
8008 | ||
8009 | sec = bfd_get_section_by_name (abfd, ".ARM.exidx"); | |
8010 | if (sec != NULL && (sec->flags & SEC_LOAD) != 0) | |
8011 | { | |
8012 | /* If there is already a PT_ARM_EXIDX header, then we do not | |
8013 | want to add another one. This situation arises when running | |
8014 | "strip"; the input binary already has the header. */ | |
8015 | m = elf_tdata (abfd)->segment_map; | |
8016 | while (m && m->p_type != PT_ARM_EXIDX) | |
8017 | m = m->next; | |
8018 | if (!m) | |
8019 | { | |
8020 | m = bfd_zalloc (abfd, sizeof (struct elf_segment_map)); | |
8021 | if (m == NULL) | |
8022 | return FALSE; | |
8023 | m->p_type = PT_ARM_EXIDX; | |
8024 | m->count = 1; | |
8025 | m->sections[0] = sec; | |
8026 | ||
8027 | m->next = elf_tdata (abfd)->segment_map; | |
8028 | elf_tdata (abfd)->segment_map = m; | |
8029 | } | |
8030 | } | |
8031 | ||
8032 | return TRUE; | |
8033 | } | |
8034 | ||
8035 | /* We may add a PT_ARM_EXIDX program header. */ | |
8036 | ||
8037 | static int | |
8038 | elf32_arm_additional_program_headers (bfd *abfd) | |
8039 | { | |
8040 | asection *sec; | |
8041 | ||
8042 | sec = bfd_get_section_by_name (abfd, ".ARM.exidx"); | |
8043 | if (sec != NULL && (sec->flags & SEC_LOAD) != 0) | |
8044 | return 1; | |
8045 | else | |
8046 | return 0; | |
8047 | } | |
8048 | ||
0beaef2b PB |
8049 | /* We use this to override swap_symbol_in and swap_symbol_out. */ |
8050 | const struct elf_size_info elf32_arm_size_info = { | |
8051 | sizeof (Elf32_External_Ehdr), | |
8052 | sizeof (Elf32_External_Phdr), | |
8053 | sizeof (Elf32_External_Shdr), | |
8054 | sizeof (Elf32_External_Rel), | |
8055 | sizeof (Elf32_External_Rela), | |
8056 | sizeof (Elf32_External_Sym), | |
8057 | sizeof (Elf32_External_Dyn), | |
8058 | sizeof (Elf_External_Note), | |
8059 | 4, | |
8060 | 1, | |
8061 | 32, 2, | |
8062 | ELFCLASS32, EV_CURRENT, | |
8063 | bfd_elf32_write_out_phdrs, | |
8064 | bfd_elf32_write_shdrs_and_ehdr, | |
8065 | bfd_elf32_write_relocs, | |
8066 | elf32_arm_swap_symbol_in, | |
8067 | elf32_arm_swap_symbol_out, | |
8068 | bfd_elf32_slurp_reloc_table, | |
8069 | bfd_elf32_slurp_symbol_table, | |
8070 | bfd_elf32_swap_dyn_in, | |
8071 | bfd_elf32_swap_dyn_out, | |
8072 | bfd_elf32_swap_reloc_in, | |
8073 | bfd_elf32_swap_reloc_out, | |
8074 | bfd_elf32_swap_reloca_in, | |
8075 | bfd_elf32_swap_reloca_out | |
8076 | }; | |
8077 | ||
252b5132 RH |
8078 | #define ELF_ARCH bfd_arch_arm |
8079 | #define ELF_MACHINE_CODE EM_ARM | |
d0facd1b NC |
8080 | #ifdef __QNXTARGET__ |
8081 | #define ELF_MAXPAGESIZE 0x1000 | |
8082 | #else | |
f21f3fe0 | 8083 | #define ELF_MAXPAGESIZE 0x8000 |
d0facd1b | 8084 | #endif |
b1342370 | 8085 | #define ELF_MINPAGESIZE 0x1000 |
252b5132 | 8086 | |
ba93b8ac DJ |
8087 | #define bfd_elf32_mkobject elf32_arm_mkobject |
8088 | ||
99e4ae17 AJ |
8089 | #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data |
8090 | #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data | |
252b5132 RH |
8091 | #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags |
8092 | #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data | |
8093 | #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create | |
dc810e39 | 8094 | #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup |
252b5132 | 8095 | #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line |
4ab527b0 | 8096 | #define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info |
e489d0ae | 8097 | #define bfd_elf32_new_section_hook elf32_arm_new_section_hook |
3c9458e9 | 8098 | #define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol |
957c6e41 | 8099 | #define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup |
ee065d83 | 8100 | #define bfd_elf32_bfd_final_link elf32_arm_bfd_final_link |
252b5132 RH |
8101 | |
8102 | #define elf_backend_get_symbol_type elf32_arm_get_symbol_type | |
8103 | #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook | |
8104 | #define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook | |
8105 | #define elf_backend_check_relocs elf32_arm_check_relocs | |
dc810e39 | 8106 | #define elf_backend_relocate_section elf32_arm_relocate_section |
e489d0ae | 8107 | #define elf_backend_write_section elf32_arm_write_section |
252b5132 | 8108 | #define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol |
5e681ec4 | 8109 | #define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections |
252b5132 RH |
8110 | #define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol |
8111 | #define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections | |
e489d0ae | 8112 | #define elf_backend_link_output_symbol_hook elf32_arm_output_symbol_hook |
252b5132 | 8113 | #define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections |
ba96a88f | 8114 | #define elf_backend_post_process_headers elf32_arm_post_process_headers |
99e4ae17 | 8115 | #define elf_backend_reloc_type_class elf32_arm_reloc_type_class |
c178919b | 8116 | #define elf_backend_object_p elf32_arm_object_p |
e16bb312 | 8117 | #define elf_backend_section_flags elf32_arm_section_flags |
40a18ebd NC |
8118 | #define elf_backend_fake_sections elf32_arm_fake_sections |
8119 | #define elf_backend_section_from_shdr elf32_arm_section_from_shdr | |
e16bb312 | 8120 | #define elf_backend_final_write_processing elf32_arm_final_write_processing |
5e681ec4 | 8121 | #define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol |
b7693d02 | 8122 | #define elf_backend_symbol_processing elf32_arm_symbol_processing |
0beaef2b | 8123 | #define elf_backend_size_info elf32_arm_size_info |
b294bdf8 MM |
8124 | #define elf_backend_modify_segment_map elf32_arm_modify_segment_map |
8125 | #define elf_backend_additional_program_headers \ | |
8126 | elf32_arm_additional_program_headers | |
252b5132 | 8127 | |
5e681ec4 | 8128 | #define elf_backend_can_refcount 1 |
252b5132 RH |
8129 | #define elf_backend_can_gc_sections 1 |
8130 | #define elf_backend_plt_readonly 1 | |
8131 | #define elf_backend_want_got_plt 1 | |
8132 | #define elf_backend_want_plt_sym 0 | |
4e7fd91e PB |
8133 | #define elf_backend_may_use_rel_p 1 |
8134 | #define elf_backend_may_use_rela_p 0 | |
8135 | #define elf_backend_default_use_rela_p 0 | |
8136 | #define elf_backend_rela_normal 0 | |
252b5132 | 8137 | |
04f7c78d | 8138 | #define elf_backend_got_header_size 12 |
04f7c78d | 8139 | |
252b5132 | 8140 | #include "elf32-target.h" |
7f266840 | 8141 | |
4e7fd91e PB |
8142 | /* VxWorks Targets */ |
8143 | ||
8144 | #undef TARGET_LITTLE_SYM | |
8145 | #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec | |
8146 | #undef TARGET_LITTLE_NAME | |
8147 | #define TARGET_LITTLE_NAME "elf32-littlearm-vxworks" | |
8148 | #undef TARGET_BIG_SYM | |
8149 | #define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec | |
8150 | #undef TARGET_BIG_NAME | |
8151 | #define TARGET_BIG_NAME "elf32-bigarm-vxworks" | |
8152 | ||
8153 | /* Like elf32_arm_link_hash_table_create -- but overrides | |
8154 | appropriately for VxWorks. */ | |
8155 | static struct bfd_link_hash_table * | |
8156 | elf32_arm_vxworks_link_hash_table_create (bfd *abfd) | |
8157 | { | |
8158 | struct bfd_link_hash_table *ret; | |
8159 | ||
8160 | ret = elf32_arm_link_hash_table_create (abfd); | |
8161 | if (ret) | |
8162 | { | |
8163 | struct elf32_arm_link_hash_table *htab | |
00a97672 | 8164 | = (struct elf32_arm_link_hash_table *) ret; |
4e7fd91e | 8165 | htab->use_rel = 0; |
00a97672 | 8166 | htab->vxworks_p = 1; |
4e7fd91e PB |
8167 | } |
8168 | return ret; | |
8169 | } | |
8170 | ||
00a97672 RS |
8171 | static void |
8172 | elf32_arm_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker) | |
8173 | { | |
8174 | elf32_arm_final_write_processing (abfd, linker); | |
8175 | elf_vxworks_final_write_processing (abfd, linker); | |
8176 | } | |
8177 | ||
4e7fd91e PB |
8178 | #undef elf32_bed |
8179 | #define elf32_bed elf32_arm_vxworks_bed | |
8180 | ||
8181 | #undef bfd_elf32_bfd_link_hash_table_create | |
8182 | #define bfd_elf32_bfd_link_hash_table_create \ | |
8183 | elf32_arm_vxworks_link_hash_table_create | |
00a97672 RS |
8184 | #undef elf_backend_add_symbol_hook |
8185 | #define elf_backend_add_symbol_hook \ | |
8186 | elf_vxworks_add_symbol_hook | |
8187 | #undef elf_backend_final_write_processing | |
8188 | #define elf_backend_final_write_processing \ | |
8189 | elf32_arm_vxworks_final_write_processing | |
8190 | #undef elf_backend_emit_relocs | |
8191 | #define elf_backend_emit_relocs \ | |
8192 | elf_vxworks_emit_relocs | |
4e7fd91e PB |
8193 | |
8194 | #undef elf_backend_may_use_rel_p | |
00a97672 | 8195 | #define elf_backend_may_use_rel_p 0 |
4e7fd91e | 8196 | #undef elf_backend_may_use_rela_p |
00a97672 | 8197 | #define elf_backend_may_use_rela_p 1 |
4e7fd91e | 8198 | #undef elf_backend_default_use_rela_p |
00a97672 | 8199 | #define elf_backend_default_use_rela_p 1 |
4e7fd91e | 8200 | #undef elf_backend_rela_normal |
00a97672 RS |
8201 | #define elf_backend_rela_normal 1 |
8202 | #undef elf_backend_want_plt_sym | |
8203 | #define elf_backend_want_plt_sym 1 | |
8204 | #undef ELF_MAXPAGESIZE | |
8205 | #define ELF_MAXPAGESIZE 0x1000 | |
4e7fd91e PB |
8206 | |
8207 | #include "elf32-target.h" | |
8208 | ||
8209 | ||
7f266840 DJ |
8210 | /* Symbian OS Targets */ |
8211 | ||
8212 | #undef TARGET_LITTLE_SYM | |
8213 | #define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec | |
8214 | #undef TARGET_LITTLE_NAME | |
8215 | #define TARGET_LITTLE_NAME "elf32-littlearm-symbian" | |
8216 | #undef TARGET_BIG_SYM | |
8217 | #define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec | |
8218 | #undef TARGET_BIG_NAME | |
8219 | #define TARGET_BIG_NAME "elf32-bigarm-symbian" | |
8220 | ||
8221 | /* Like elf32_arm_link_hash_table_create -- but overrides | |
8222 | appropriately for Symbian OS. */ | |
8223 | static struct bfd_link_hash_table * | |
8224 | elf32_arm_symbian_link_hash_table_create (bfd *abfd) | |
8225 | { | |
8226 | struct bfd_link_hash_table *ret; | |
8227 | ||
8228 | ret = elf32_arm_link_hash_table_create (abfd); | |
8229 | if (ret) | |
8230 | { | |
8231 | struct elf32_arm_link_hash_table *htab | |
8232 | = (struct elf32_arm_link_hash_table *)ret; | |
8233 | /* There is no PLT header for Symbian OS. */ | |
8234 | htab->plt_header_size = 0; | |
8235 | /* The PLT entries are each three instructions. */ | |
8236 | htab->plt_entry_size = 4 * NUM_ELEM (elf32_arm_symbian_plt_entry); | |
8237 | htab->symbian_p = 1; | |
33bfe774 JB |
8238 | /* Symbian uses armv5t or above, so use_blx is always true. */ |
8239 | htab->use_blx = 1; | |
67687978 | 8240 | htab->root.is_relocatable_executable = 1; |
7f266840 DJ |
8241 | } |
8242 | return ret; | |
8243 | } | |
8244 | ||
b35d266b | 8245 | static const struct bfd_elf_special_section |
551b43fd | 8246 | elf32_arm_symbian_special_sections[] = |
7f266840 | 8247 | { |
5cd3778d MM |
8248 | /* In a BPABI executable, the dynamic linking sections do not go in |
8249 | the loadable read-only segment. The post-linker may wish to | |
8250 | refer to these sections, but they are not part of the final | |
8251 | program image. */ | |
7f266840 DJ |
8252 | { ".dynamic", 8, 0, SHT_DYNAMIC, 0 }, |
8253 | { ".dynstr", 7, 0, SHT_STRTAB, 0 }, | |
8254 | { ".dynsym", 7, 0, SHT_DYNSYM, 0 }, | |
8255 | { ".got", 4, 0, SHT_PROGBITS, 0 }, | |
8256 | { ".hash", 5, 0, SHT_HASH, 0 }, | |
5cd3778d MM |
8257 | /* These sections do not need to be writable as the SymbianOS |
8258 | postlinker will arrange things so that no dynamic relocation is | |
8259 | required. */ | |
8260 | { ".init_array", 11, 0, SHT_INIT_ARRAY, SHF_ALLOC }, | |
8261 | { ".fini_array", 11, 0, SHT_FINI_ARRAY, SHF_ALLOC }, | |
8262 | { ".preinit_array", 14, 0, SHT_PREINIT_ARRAY, SHF_ALLOC }, | |
7f266840 DJ |
8263 | { NULL, 0, 0, 0, 0 } |
8264 | }; | |
8265 | ||
c3c76620 | 8266 | static void |
b34af79c MM |
8267 | elf32_arm_symbian_begin_write_processing (bfd *abfd, |
8268 | struct bfd_link_info *link_info | |
8269 | ATTRIBUTE_UNUSED) | |
c3c76620 MM |
8270 | { |
8271 | /* BPABI objects are never loaded directly by an OS kernel; they are | |
8272 | processed by a postlinker first, into an OS-specific format. If | |
8273 | the D_PAGED bit is set on the file, BFD will align segments on | |
8274 | page boundaries, so that an OS can directly map the file. With | |
8275 | BPABI objects, that just results in wasted space. In addition, | |
8276 | because we clear the D_PAGED bit, map_sections_to_segments will | |
8277 | recognize that the program headers should not be mapped into any | |
8278 | loadable segment. */ | |
8279 | abfd->flags &= ~D_PAGED; | |
8280 | } | |
7f266840 DJ |
8281 | |
8282 | static bfd_boolean | |
b34af79c | 8283 | elf32_arm_symbian_modify_segment_map (bfd *abfd, |
b294bdf8 | 8284 | struct bfd_link_info *info) |
7f266840 DJ |
8285 | { |
8286 | struct elf_segment_map *m; | |
8287 | asection *dynsec; | |
8288 | ||
7f266840 DJ |
8289 | /* BPABI shared libraries and executables should have a PT_DYNAMIC |
8290 | segment. However, because the .dynamic section is not marked | |
8291 | with SEC_LOAD, the generic ELF code will not create such a | |
8292 | segment. */ | |
8293 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); | |
8294 | if (dynsec) | |
8295 | { | |
8296 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); | |
8297 | m->next = elf_tdata (abfd)->segment_map; | |
8298 | elf_tdata (abfd)->segment_map = m; | |
8299 | } | |
8300 | ||
b294bdf8 MM |
8301 | /* Also call the generic arm routine. */ |
8302 | return elf32_arm_modify_segment_map (abfd, info); | |
7f266840 DJ |
8303 | } |
8304 | ||
8305 | #undef elf32_bed | |
8306 | #define elf32_bed elf32_arm_symbian_bed | |
8307 | ||
8308 | /* The dynamic sections are not allocated on SymbianOS; the postlinker | |
8309 | will process them and then discard them. */ | |
8310 | #undef ELF_DYNAMIC_SEC_FLAGS | |
8311 | #define ELF_DYNAMIC_SEC_FLAGS \ | |
8312 | (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED) | |
8313 | ||
8314 | #undef bfd_elf32_bfd_link_hash_table_create | |
8315 | #define bfd_elf32_bfd_link_hash_table_create \ | |
8316 | elf32_arm_symbian_link_hash_table_create | |
00a97672 | 8317 | #undef elf_backend_add_symbol_hook |
7f266840 | 8318 | |
29ef7005 L |
8319 | #undef elf_backend_special_sections |
8320 | #define elf_backend_special_sections elf32_arm_symbian_special_sections | |
7f266840 | 8321 | |
c3c76620 MM |
8322 | #undef elf_backend_begin_write_processing |
8323 | #define elf_backend_begin_write_processing \ | |
8324 | elf32_arm_symbian_begin_write_processing | |
00a97672 RS |
8325 | #undef elf_backend_final_write_processing |
8326 | #define elf_backend_final_write_processing \ | |
8327 | elf32_arm_final_write_processing | |
8328 | #undef elf_backend_emit_relocs | |
c3c76620 | 8329 | |
7f266840 DJ |
8330 | #undef elf_backend_modify_segment_map |
8331 | #define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map | |
8332 | ||
8333 | /* There is no .got section for BPABI objects, and hence no header. */ | |
8334 | #undef elf_backend_got_header_size | |
8335 | #define elf_backend_got_header_size 0 | |
8336 | ||
8337 | /* Similarly, there is no .got.plt section. */ | |
8338 | #undef elf_backend_want_got_plt | |
8339 | #define elf_backend_want_got_plt 0 | |
8340 | ||
4e7fd91e | 8341 | #undef elf_backend_may_use_rel_p |
00a97672 | 8342 | #define elf_backend_may_use_rel_p 1 |
4e7fd91e | 8343 | #undef elf_backend_may_use_rela_p |
00a97672 | 8344 | #define elf_backend_may_use_rela_p 0 |
4e7fd91e | 8345 | #undef elf_backend_default_use_rela_p |
00a97672 | 8346 | #define elf_backend_default_use_rela_p 0 |
4e7fd91e | 8347 | #undef elf_backend_rela_normal |
00a97672 RS |
8348 | #define elf_backend_rela_normal 0 |
8349 | #undef elf_backend_want_plt_sym | |
8350 | #define elf_backend_want_plt_sym 0 | |
8351 | #undef ELF_MAXPAGESIZE | |
8352 | #define ELF_MAXPAGESIZE 0x8000 | |
4e7fd91e | 8353 | |
7f266840 | 8354 | #include "elf32-target.h" |