Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* 32-bit ELF support for ARM |
e44a2c9c AM |
2 | Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, |
3 | 2008 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 | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
252b5132 RH |
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 | |
cd123cb7 NC |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
20 | MA 02110-1301, USA. */ | |
252b5132 | 21 | |
7f266840 | 22 | #include "sysdep.h" |
3db64b00 | 23 | #include "bfd.h" |
00a97672 | 24 | #include "libiberty.h" |
7f266840 DJ |
25 | #include "libbfd.h" |
26 | #include "elf-bfd.h" | |
00a97672 | 27 | #include "elf-vxworks.h" |
ee065d83 | 28 | #include "elf/arm.h" |
7f266840 DJ |
29 | |
30 | #ifndef NUM_ELEM | |
31 | #define NUM_ELEM(a) (sizeof (a) / (sizeof (a)[0])) | |
32 | #endif | |
33 | ||
00a97672 RS |
34 | /* Return the relocation section associated with NAME. HTAB is the |
35 | bfd's elf32_arm_link_hash_entry. */ | |
36 | #define RELOC_SECTION(HTAB, NAME) \ | |
37 | ((HTAB)->use_rel ? ".rel" NAME : ".rela" NAME) | |
38 | ||
39 | /* Return size of a relocation entry. HTAB is the bfd's | |
40 | elf32_arm_link_hash_entry. */ | |
41 | #define RELOC_SIZE(HTAB) \ | |
42 | ((HTAB)->use_rel \ | |
43 | ? sizeof (Elf32_External_Rel) \ | |
44 | : sizeof (Elf32_External_Rela)) | |
45 | ||
46 | /* Return function to swap relocations in. HTAB is the bfd's | |
47 | elf32_arm_link_hash_entry. */ | |
48 | #define SWAP_RELOC_IN(HTAB) \ | |
49 | ((HTAB)->use_rel \ | |
50 | ? bfd_elf32_swap_reloc_in \ | |
51 | : bfd_elf32_swap_reloca_in) | |
52 | ||
53 | /* Return function to swap relocations out. HTAB is the bfd's | |
54 | elf32_arm_link_hash_entry. */ | |
55 | #define SWAP_RELOC_OUT(HTAB) \ | |
56 | ((HTAB)->use_rel \ | |
57 | ? bfd_elf32_swap_reloc_out \ | |
58 | : bfd_elf32_swap_reloca_out) | |
59 | ||
7f266840 DJ |
60 | #define elf_info_to_howto 0 |
61 | #define elf_info_to_howto_rel elf32_arm_info_to_howto | |
62 | ||
63 | #define ARM_ELF_ABI_VERSION 0 | |
64 | #define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM | |
65 | ||
24718e3b | 66 | static struct elf_backend_data elf32_arm_vxworks_bed; |
00a97672 | 67 | |
7f266840 DJ |
68 | /* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g. |
69 | R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO | |
70 | in that slot. */ | |
71 | ||
c19d1205 | 72 | static reloc_howto_type elf32_arm_howto_table_1[] = |
7f266840 DJ |
73 | { |
74 | /* No relocation */ | |
75 | HOWTO (R_ARM_NONE, /* type */ | |
76 | 0, /* rightshift */ | |
77 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
78 | 0, /* bitsize */ | |
79 | FALSE, /* pc_relative */ | |
80 | 0, /* bitpos */ | |
81 | complain_overflow_dont,/* complain_on_overflow */ | |
82 | bfd_elf_generic_reloc, /* special_function */ | |
83 | "R_ARM_NONE", /* name */ | |
84 | FALSE, /* partial_inplace */ | |
85 | 0, /* src_mask */ | |
86 | 0, /* dst_mask */ | |
87 | FALSE), /* pcrel_offset */ | |
88 | ||
89 | HOWTO (R_ARM_PC24, /* type */ | |
90 | 2, /* rightshift */ | |
91 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
92 | 24, /* bitsize */ | |
93 | TRUE, /* pc_relative */ | |
94 | 0, /* bitpos */ | |
95 | complain_overflow_signed,/* complain_on_overflow */ | |
96 | bfd_elf_generic_reloc, /* special_function */ | |
97 | "R_ARM_PC24", /* name */ | |
98 | FALSE, /* partial_inplace */ | |
99 | 0x00ffffff, /* src_mask */ | |
100 | 0x00ffffff, /* dst_mask */ | |
101 | TRUE), /* pcrel_offset */ | |
102 | ||
103 | /* 32 bit absolute */ | |
104 | HOWTO (R_ARM_ABS32, /* type */ | |
105 | 0, /* rightshift */ | |
106 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
107 | 32, /* bitsize */ | |
108 | FALSE, /* pc_relative */ | |
109 | 0, /* bitpos */ | |
110 | complain_overflow_bitfield,/* complain_on_overflow */ | |
111 | bfd_elf_generic_reloc, /* special_function */ | |
112 | "R_ARM_ABS32", /* name */ | |
113 | FALSE, /* partial_inplace */ | |
114 | 0xffffffff, /* src_mask */ | |
115 | 0xffffffff, /* dst_mask */ | |
116 | FALSE), /* pcrel_offset */ | |
117 | ||
118 | /* standard 32bit pc-relative reloc */ | |
119 | HOWTO (R_ARM_REL32, /* type */ | |
120 | 0, /* rightshift */ | |
121 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
122 | 32, /* bitsize */ | |
123 | TRUE, /* pc_relative */ | |
124 | 0, /* bitpos */ | |
125 | complain_overflow_bitfield,/* complain_on_overflow */ | |
126 | bfd_elf_generic_reloc, /* special_function */ | |
127 | "R_ARM_REL32", /* name */ | |
128 | FALSE, /* partial_inplace */ | |
129 | 0xffffffff, /* src_mask */ | |
130 | 0xffffffff, /* dst_mask */ | |
131 | TRUE), /* pcrel_offset */ | |
132 | ||
c19d1205 | 133 | /* 8 bit absolute - R_ARM_LDR_PC_G0 in AAELF */ |
4962c51a | 134 | HOWTO (R_ARM_LDR_PC_G0, /* type */ |
7f266840 DJ |
135 | 0, /* rightshift */ |
136 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
4962c51a MS |
137 | 32, /* bitsize */ |
138 | TRUE, /* pc_relative */ | |
7f266840 | 139 | 0, /* bitpos */ |
4962c51a | 140 | complain_overflow_dont,/* complain_on_overflow */ |
7f266840 | 141 | bfd_elf_generic_reloc, /* special_function */ |
4962c51a | 142 | "R_ARM_LDR_PC_G0", /* name */ |
7f266840 | 143 | FALSE, /* partial_inplace */ |
4962c51a MS |
144 | 0xffffffff, /* src_mask */ |
145 | 0xffffffff, /* dst_mask */ | |
146 | TRUE), /* pcrel_offset */ | |
7f266840 DJ |
147 | |
148 | /* 16 bit absolute */ | |
149 | HOWTO (R_ARM_ABS16, /* type */ | |
150 | 0, /* rightshift */ | |
151 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
152 | 16, /* bitsize */ | |
153 | FALSE, /* pc_relative */ | |
154 | 0, /* bitpos */ | |
155 | complain_overflow_bitfield,/* complain_on_overflow */ | |
156 | bfd_elf_generic_reloc, /* special_function */ | |
157 | "R_ARM_ABS16", /* name */ | |
158 | FALSE, /* partial_inplace */ | |
159 | 0x0000ffff, /* src_mask */ | |
160 | 0x0000ffff, /* dst_mask */ | |
161 | FALSE), /* pcrel_offset */ | |
162 | ||
163 | /* 12 bit absolute */ | |
164 | HOWTO (R_ARM_ABS12, /* type */ | |
165 | 0, /* rightshift */ | |
166 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
167 | 12, /* bitsize */ | |
168 | FALSE, /* pc_relative */ | |
169 | 0, /* bitpos */ | |
170 | complain_overflow_bitfield,/* complain_on_overflow */ | |
171 | bfd_elf_generic_reloc, /* special_function */ | |
172 | "R_ARM_ABS12", /* name */ | |
173 | FALSE, /* partial_inplace */ | |
00a97672 RS |
174 | 0x00000fff, /* src_mask */ |
175 | 0x00000fff, /* dst_mask */ | |
7f266840 DJ |
176 | FALSE), /* pcrel_offset */ |
177 | ||
178 | HOWTO (R_ARM_THM_ABS5, /* type */ | |
179 | 6, /* rightshift */ | |
180 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
181 | 5, /* bitsize */ | |
182 | FALSE, /* pc_relative */ | |
183 | 0, /* bitpos */ | |
184 | complain_overflow_bitfield,/* complain_on_overflow */ | |
185 | bfd_elf_generic_reloc, /* special_function */ | |
186 | "R_ARM_THM_ABS5", /* name */ | |
187 | FALSE, /* partial_inplace */ | |
188 | 0x000007e0, /* src_mask */ | |
189 | 0x000007e0, /* dst_mask */ | |
190 | FALSE), /* pcrel_offset */ | |
191 | ||
192 | /* 8 bit absolute */ | |
193 | HOWTO (R_ARM_ABS8, /* type */ | |
194 | 0, /* rightshift */ | |
195 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
196 | 8, /* bitsize */ | |
197 | FALSE, /* pc_relative */ | |
198 | 0, /* bitpos */ | |
199 | complain_overflow_bitfield,/* complain_on_overflow */ | |
200 | bfd_elf_generic_reloc, /* special_function */ | |
201 | "R_ARM_ABS8", /* name */ | |
202 | FALSE, /* partial_inplace */ | |
203 | 0x000000ff, /* src_mask */ | |
204 | 0x000000ff, /* dst_mask */ | |
205 | FALSE), /* pcrel_offset */ | |
206 | ||
207 | HOWTO (R_ARM_SBREL32, /* type */ | |
208 | 0, /* rightshift */ | |
209 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
210 | 32, /* bitsize */ | |
211 | FALSE, /* pc_relative */ | |
212 | 0, /* bitpos */ | |
213 | complain_overflow_dont,/* complain_on_overflow */ | |
214 | bfd_elf_generic_reloc, /* special_function */ | |
215 | "R_ARM_SBREL32", /* name */ | |
216 | FALSE, /* partial_inplace */ | |
217 | 0xffffffff, /* src_mask */ | |
218 | 0xffffffff, /* dst_mask */ | |
219 | FALSE), /* pcrel_offset */ | |
220 | ||
c19d1205 | 221 | HOWTO (R_ARM_THM_CALL, /* type */ |
7f266840 DJ |
222 | 1, /* rightshift */ |
223 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
e95de063 | 224 | 25, /* bitsize */ |
7f266840 DJ |
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 */ | |
2cab6cc3 | 838 | complain_overflow_dont,/* complain_on_overflow */ |
c19d1205 ZW |
839 | bfd_elf_generic_reloc, /* special_function */ |
840 | "R_ARM_THM_ALU_PREL_11_0",/* name */ | |
841 | FALSE, /* partial_inplace */ | |
2cab6cc3 MS |
842 | 0xffffffff, /* src_mask */ |
843 | 0xffffffff, /* dst_mask */ | |
c19d1205 ZW |
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 */ | |
2cab6cc3 | 852 | complain_overflow_dont,/* complain_on_overflow */ |
c19d1205 ZW |
853 | bfd_elf_generic_reloc, /* special_function */ |
854 | "R_ARM_THM_PC12", /* name */ | |
855 | FALSE, /* partial_inplace */ | |
2cab6cc3 MS |
856 | 0xffffffff, /* src_mask */ |
857 | 0xffffffff, /* dst_mask */ | |
c19d1205 ZW |
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 | 887 | |
4962c51a MS |
888 | /* Group relocations. */ |
889 | ||
890 | HOWTO (R_ARM_ALU_PC_G0_NC, /* type */ | |
891 | 0, /* rightshift */ | |
892 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
893 | 32, /* bitsize */ | |
894 | TRUE, /* pc_relative */ | |
895 | 0, /* bitpos */ | |
896 | complain_overflow_dont,/* complain_on_overflow */ | |
897 | bfd_elf_generic_reloc, /* special_function */ | |
898 | "R_ARM_ALU_PC_G0_NC", /* name */ | |
899 | FALSE, /* partial_inplace */ | |
900 | 0xffffffff, /* src_mask */ | |
901 | 0xffffffff, /* dst_mask */ | |
902 | TRUE), /* pcrel_offset */ | |
903 | ||
904 | HOWTO (R_ARM_ALU_PC_G0, /* type */ | |
905 | 0, /* rightshift */ | |
906 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
907 | 32, /* bitsize */ | |
908 | TRUE, /* pc_relative */ | |
909 | 0, /* bitpos */ | |
910 | complain_overflow_dont,/* complain_on_overflow */ | |
911 | bfd_elf_generic_reloc, /* special_function */ | |
912 | "R_ARM_ALU_PC_G0", /* name */ | |
913 | FALSE, /* partial_inplace */ | |
914 | 0xffffffff, /* src_mask */ | |
915 | 0xffffffff, /* dst_mask */ | |
916 | TRUE), /* pcrel_offset */ | |
917 | ||
918 | HOWTO (R_ARM_ALU_PC_G1_NC, /* type */ | |
919 | 0, /* rightshift */ | |
920 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
921 | 32, /* bitsize */ | |
922 | TRUE, /* pc_relative */ | |
923 | 0, /* bitpos */ | |
924 | complain_overflow_dont,/* complain_on_overflow */ | |
925 | bfd_elf_generic_reloc, /* special_function */ | |
926 | "R_ARM_ALU_PC_G1_NC", /* name */ | |
927 | FALSE, /* partial_inplace */ | |
928 | 0xffffffff, /* src_mask */ | |
929 | 0xffffffff, /* dst_mask */ | |
930 | TRUE), /* pcrel_offset */ | |
931 | ||
932 | HOWTO (R_ARM_ALU_PC_G1, /* type */ | |
933 | 0, /* rightshift */ | |
934 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
935 | 32, /* bitsize */ | |
936 | TRUE, /* pc_relative */ | |
937 | 0, /* bitpos */ | |
938 | complain_overflow_dont,/* complain_on_overflow */ | |
939 | bfd_elf_generic_reloc, /* special_function */ | |
940 | "R_ARM_ALU_PC_G1", /* name */ | |
941 | FALSE, /* partial_inplace */ | |
942 | 0xffffffff, /* src_mask */ | |
943 | 0xffffffff, /* dst_mask */ | |
944 | TRUE), /* pcrel_offset */ | |
945 | ||
946 | HOWTO (R_ARM_ALU_PC_G2, /* type */ | |
947 | 0, /* rightshift */ | |
948 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
949 | 32, /* bitsize */ | |
950 | TRUE, /* pc_relative */ | |
951 | 0, /* bitpos */ | |
952 | complain_overflow_dont,/* complain_on_overflow */ | |
953 | bfd_elf_generic_reloc, /* special_function */ | |
954 | "R_ARM_ALU_PC_G2", /* name */ | |
955 | FALSE, /* partial_inplace */ | |
956 | 0xffffffff, /* src_mask */ | |
957 | 0xffffffff, /* dst_mask */ | |
958 | TRUE), /* pcrel_offset */ | |
959 | ||
960 | HOWTO (R_ARM_LDR_PC_G1, /* type */ | |
961 | 0, /* rightshift */ | |
962 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
963 | 32, /* bitsize */ | |
964 | TRUE, /* pc_relative */ | |
965 | 0, /* bitpos */ | |
966 | complain_overflow_dont,/* complain_on_overflow */ | |
967 | bfd_elf_generic_reloc, /* special_function */ | |
968 | "R_ARM_LDR_PC_G1", /* name */ | |
969 | FALSE, /* partial_inplace */ | |
970 | 0xffffffff, /* src_mask */ | |
971 | 0xffffffff, /* dst_mask */ | |
972 | TRUE), /* pcrel_offset */ | |
973 | ||
974 | HOWTO (R_ARM_LDR_PC_G2, /* type */ | |
975 | 0, /* rightshift */ | |
976 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
977 | 32, /* bitsize */ | |
978 | TRUE, /* pc_relative */ | |
979 | 0, /* bitpos */ | |
980 | complain_overflow_dont,/* complain_on_overflow */ | |
981 | bfd_elf_generic_reloc, /* special_function */ | |
982 | "R_ARM_LDR_PC_G2", /* name */ | |
983 | FALSE, /* partial_inplace */ | |
984 | 0xffffffff, /* src_mask */ | |
985 | 0xffffffff, /* dst_mask */ | |
986 | TRUE), /* pcrel_offset */ | |
987 | ||
988 | HOWTO (R_ARM_LDRS_PC_G0, /* type */ | |
989 | 0, /* rightshift */ | |
990 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
991 | 32, /* bitsize */ | |
992 | TRUE, /* pc_relative */ | |
993 | 0, /* bitpos */ | |
994 | complain_overflow_dont,/* complain_on_overflow */ | |
995 | bfd_elf_generic_reloc, /* special_function */ | |
996 | "R_ARM_LDRS_PC_G0", /* name */ | |
997 | FALSE, /* partial_inplace */ | |
998 | 0xffffffff, /* src_mask */ | |
999 | 0xffffffff, /* dst_mask */ | |
1000 | TRUE), /* pcrel_offset */ | |
1001 | ||
1002 | HOWTO (R_ARM_LDRS_PC_G1, /* type */ | |
1003 | 0, /* rightshift */ | |
1004 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1005 | 32, /* bitsize */ | |
1006 | TRUE, /* pc_relative */ | |
1007 | 0, /* bitpos */ | |
1008 | complain_overflow_dont,/* complain_on_overflow */ | |
1009 | bfd_elf_generic_reloc, /* special_function */ | |
1010 | "R_ARM_LDRS_PC_G1", /* name */ | |
1011 | FALSE, /* partial_inplace */ | |
1012 | 0xffffffff, /* src_mask */ | |
1013 | 0xffffffff, /* dst_mask */ | |
1014 | TRUE), /* pcrel_offset */ | |
1015 | ||
1016 | HOWTO (R_ARM_LDRS_PC_G2, /* type */ | |
1017 | 0, /* rightshift */ | |
1018 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1019 | 32, /* bitsize */ | |
1020 | TRUE, /* pc_relative */ | |
1021 | 0, /* bitpos */ | |
1022 | complain_overflow_dont,/* complain_on_overflow */ | |
1023 | bfd_elf_generic_reloc, /* special_function */ | |
1024 | "R_ARM_LDRS_PC_G2", /* name */ | |
1025 | FALSE, /* partial_inplace */ | |
1026 | 0xffffffff, /* src_mask */ | |
1027 | 0xffffffff, /* dst_mask */ | |
1028 | TRUE), /* pcrel_offset */ | |
1029 | ||
1030 | HOWTO (R_ARM_LDC_PC_G0, /* type */ | |
1031 | 0, /* rightshift */ | |
1032 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1033 | 32, /* bitsize */ | |
1034 | TRUE, /* pc_relative */ | |
1035 | 0, /* bitpos */ | |
1036 | complain_overflow_dont,/* complain_on_overflow */ | |
1037 | bfd_elf_generic_reloc, /* special_function */ | |
1038 | "R_ARM_LDC_PC_G0", /* name */ | |
1039 | FALSE, /* partial_inplace */ | |
1040 | 0xffffffff, /* src_mask */ | |
1041 | 0xffffffff, /* dst_mask */ | |
1042 | TRUE), /* pcrel_offset */ | |
1043 | ||
1044 | HOWTO (R_ARM_LDC_PC_G1, /* type */ | |
1045 | 0, /* rightshift */ | |
1046 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1047 | 32, /* bitsize */ | |
1048 | TRUE, /* pc_relative */ | |
1049 | 0, /* bitpos */ | |
1050 | complain_overflow_dont,/* complain_on_overflow */ | |
1051 | bfd_elf_generic_reloc, /* special_function */ | |
1052 | "R_ARM_LDC_PC_G1", /* name */ | |
1053 | FALSE, /* partial_inplace */ | |
1054 | 0xffffffff, /* src_mask */ | |
1055 | 0xffffffff, /* dst_mask */ | |
1056 | TRUE), /* pcrel_offset */ | |
1057 | ||
1058 | HOWTO (R_ARM_LDC_PC_G2, /* type */ | |
1059 | 0, /* rightshift */ | |
1060 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1061 | 32, /* bitsize */ | |
1062 | TRUE, /* pc_relative */ | |
1063 | 0, /* bitpos */ | |
1064 | complain_overflow_dont,/* complain_on_overflow */ | |
1065 | bfd_elf_generic_reloc, /* special_function */ | |
1066 | "R_ARM_LDC_PC_G2", /* name */ | |
1067 | FALSE, /* partial_inplace */ | |
1068 | 0xffffffff, /* src_mask */ | |
1069 | 0xffffffff, /* dst_mask */ | |
1070 | TRUE), /* pcrel_offset */ | |
1071 | ||
1072 | HOWTO (R_ARM_ALU_SB_G0_NC, /* type */ | |
1073 | 0, /* rightshift */ | |
1074 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1075 | 32, /* bitsize */ | |
1076 | TRUE, /* pc_relative */ | |
1077 | 0, /* bitpos */ | |
1078 | complain_overflow_dont,/* complain_on_overflow */ | |
1079 | bfd_elf_generic_reloc, /* special_function */ | |
1080 | "R_ARM_ALU_SB_G0_NC", /* name */ | |
1081 | FALSE, /* partial_inplace */ | |
1082 | 0xffffffff, /* src_mask */ | |
1083 | 0xffffffff, /* dst_mask */ | |
1084 | TRUE), /* pcrel_offset */ | |
1085 | ||
1086 | HOWTO (R_ARM_ALU_SB_G0, /* type */ | |
1087 | 0, /* rightshift */ | |
1088 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1089 | 32, /* bitsize */ | |
1090 | TRUE, /* pc_relative */ | |
1091 | 0, /* bitpos */ | |
1092 | complain_overflow_dont,/* complain_on_overflow */ | |
1093 | bfd_elf_generic_reloc, /* special_function */ | |
1094 | "R_ARM_ALU_SB_G0", /* name */ | |
1095 | FALSE, /* partial_inplace */ | |
1096 | 0xffffffff, /* src_mask */ | |
1097 | 0xffffffff, /* dst_mask */ | |
1098 | TRUE), /* pcrel_offset */ | |
1099 | ||
1100 | HOWTO (R_ARM_ALU_SB_G1_NC, /* type */ | |
1101 | 0, /* rightshift */ | |
1102 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1103 | 32, /* bitsize */ | |
1104 | TRUE, /* pc_relative */ | |
1105 | 0, /* bitpos */ | |
1106 | complain_overflow_dont,/* complain_on_overflow */ | |
1107 | bfd_elf_generic_reloc, /* special_function */ | |
1108 | "R_ARM_ALU_SB_G1_NC", /* name */ | |
1109 | FALSE, /* partial_inplace */ | |
1110 | 0xffffffff, /* src_mask */ | |
1111 | 0xffffffff, /* dst_mask */ | |
1112 | TRUE), /* pcrel_offset */ | |
1113 | ||
1114 | HOWTO (R_ARM_ALU_SB_G1, /* type */ | |
1115 | 0, /* rightshift */ | |
1116 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1117 | 32, /* bitsize */ | |
1118 | TRUE, /* pc_relative */ | |
1119 | 0, /* bitpos */ | |
1120 | complain_overflow_dont,/* complain_on_overflow */ | |
1121 | bfd_elf_generic_reloc, /* special_function */ | |
1122 | "R_ARM_ALU_SB_G1", /* name */ | |
1123 | FALSE, /* partial_inplace */ | |
1124 | 0xffffffff, /* src_mask */ | |
1125 | 0xffffffff, /* dst_mask */ | |
1126 | TRUE), /* pcrel_offset */ | |
1127 | ||
1128 | HOWTO (R_ARM_ALU_SB_G2, /* type */ | |
1129 | 0, /* rightshift */ | |
1130 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1131 | 32, /* bitsize */ | |
1132 | TRUE, /* pc_relative */ | |
1133 | 0, /* bitpos */ | |
1134 | complain_overflow_dont,/* complain_on_overflow */ | |
1135 | bfd_elf_generic_reloc, /* special_function */ | |
1136 | "R_ARM_ALU_SB_G2", /* name */ | |
1137 | FALSE, /* partial_inplace */ | |
1138 | 0xffffffff, /* src_mask */ | |
1139 | 0xffffffff, /* dst_mask */ | |
1140 | TRUE), /* pcrel_offset */ | |
1141 | ||
1142 | HOWTO (R_ARM_LDR_SB_G0, /* type */ | |
1143 | 0, /* rightshift */ | |
1144 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1145 | 32, /* bitsize */ | |
1146 | TRUE, /* pc_relative */ | |
1147 | 0, /* bitpos */ | |
1148 | complain_overflow_dont,/* complain_on_overflow */ | |
1149 | bfd_elf_generic_reloc, /* special_function */ | |
1150 | "R_ARM_LDR_SB_G0", /* name */ | |
1151 | FALSE, /* partial_inplace */ | |
1152 | 0xffffffff, /* src_mask */ | |
1153 | 0xffffffff, /* dst_mask */ | |
1154 | TRUE), /* pcrel_offset */ | |
1155 | ||
1156 | HOWTO (R_ARM_LDR_SB_G1, /* type */ | |
1157 | 0, /* rightshift */ | |
1158 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1159 | 32, /* bitsize */ | |
1160 | TRUE, /* pc_relative */ | |
1161 | 0, /* bitpos */ | |
1162 | complain_overflow_dont,/* complain_on_overflow */ | |
1163 | bfd_elf_generic_reloc, /* special_function */ | |
1164 | "R_ARM_LDR_SB_G1", /* name */ | |
1165 | FALSE, /* partial_inplace */ | |
1166 | 0xffffffff, /* src_mask */ | |
1167 | 0xffffffff, /* dst_mask */ | |
1168 | TRUE), /* pcrel_offset */ | |
1169 | ||
1170 | HOWTO (R_ARM_LDR_SB_G2, /* type */ | |
1171 | 0, /* rightshift */ | |
1172 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1173 | 32, /* bitsize */ | |
1174 | TRUE, /* pc_relative */ | |
1175 | 0, /* bitpos */ | |
1176 | complain_overflow_dont,/* complain_on_overflow */ | |
1177 | bfd_elf_generic_reloc, /* special_function */ | |
1178 | "R_ARM_LDR_SB_G2", /* name */ | |
1179 | FALSE, /* partial_inplace */ | |
1180 | 0xffffffff, /* src_mask */ | |
1181 | 0xffffffff, /* dst_mask */ | |
1182 | TRUE), /* pcrel_offset */ | |
1183 | ||
1184 | HOWTO (R_ARM_LDRS_SB_G0, /* type */ | |
1185 | 0, /* rightshift */ | |
1186 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1187 | 32, /* bitsize */ | |
1188 | TRUE, /* pc_relative */ | |
1189 | 0, /* bitpos */ | |
1190 | complain_overflow_dont,/* complain_on_overflow */ | |
1191 | bfd_elf_generic_reloc, /* special_function */ | |
1192 | "R_ARM_LDRS_SB_G0", /* name */ | |
1193 | FALSE, /* partial_inplace */ | |
1194 | 0xffffffff, /* src_mask */ | |
1195 | 0xffffffff, /* dst_mask */ | |
1196 | TRUE), /* pcrel_offset */ | |
1197 | ||
1198 | HOWTO (R_ARM_LDRS_SB_G1, /* type */ | |
1199 | 0, /* rightshift */ | |
1200 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1201 | 32, /* bitsize */ | |
1202 | TRUE, /* pc_relative */ | |
1203 | 0, /* bitpos */ | |
1204 | complain_overflow_dont,/* complain_on_overflow */ | |
1205 | bfd_elf_generic_reloc, /* special_function */ | |
1206 | "R_ARM_LDRS_SB_G1", /* name */ | |
1207 | FALSE, /* partial_inplace */ | |
1208 | 0xffffffff, /* src_mask */ | |
1209 | 0xffffffff, /* dst_mask */ | |
1210 | TRUE), /* pcrel_offset */ | |
1211 | ||
1212 | HOWTO (R_ARM_LDRS_SB_G2, /* type */ | |
1213 | 0, /* rightshift */ | |
1214 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1215 | 32, /* bitsize */ | |
1216 | TRUE, /* pc_relative */ | |
1217 | 0, /* bitpos */ | |
1218 | complain_overflow_dont,/* complain_on_overflow */ | |
1219 | bfd_elf_generic_reloc, /* special_function */ | |
1220 | "R_ARM_LDRS_SB_G2", /* name */ | |
1221 | FALSE, /* partial_inplace */ | |
1222 | 0xffffffff, /* src_mask */ | |
1223 | 0xffffffff, /* dst_mask */ | |
1224 | TRUE), /* pcrel_offset */ | |
1225 | ||
1226 | HOWTO (R_ARM_LDC_SB_G0, /* type */ | |
1227 | 0, /* rightshift */ | |
1228 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1229 | 32, /* bitsize */ | |
1230 | TRUE, /* pc_relative */ | |
1231 | 0, /* bitpos */ | |
1232 | complain_overflow_dont,/* complain_on_overflow */ | |
1233 | bfd_elf_generic_reloc, /* special_function */ | |
1234 | "R_ARM_LDC_SB_G0", /* name */ | |
1235 | FALSE, /* partial_inplace */ | |
1236 | 0xffffffff, /* src_mask */ | |
1237 | 0xffffffff, /* dst_mask */ | |
1238 | TRUE), /* pcrel_offset */ | |
1239 | ||
1240 | HOWTO (R_ARM_LDC_SB_G1, /* type */ | |
1241 | 0, /* rightshift */ | |
1242 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1243 | 32, /* bitsize */ | |
1244 | TRUE, /* pc_relative */ | |
1245 | 0, /* bitpos */ | |
1246 | complain_overflow_dont,/* complain_on_overflow */ | |
1247 | bfd_elf_generic_reloc, /* special_function */ | |
1248 | "R_ARM_LDC_SB_G1", /* name */ | |
1249 | FALSE, /* partial_inplace */ | |
1250 | 0xffffffff, /* src_mask */ | |
1251 | 0xffffffff, /* dst_mask */ | |
1252 | TRUE), /* pcrel_offset */ | |
1253 | ||
1254 | HOWTO (R_ARM_LDC_SB_G2, /* type */ | |
1255 | 0, /* rightshift */ | |
1256 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1257 | 32, /* bitsize */ | |
1258 | TRUE, /* pc_relative */ | |
1259 | 0, /* bitpos */ | |
1260 | complain_overflow_dont,/* complain_on_overflow */ | |
1261 | bfd_elf_generic_reloc, /* special_function */ | |
1262 | "R_ARM_LDC_SB_G2", /* name */ | |
1263 | FALSE, /* partial_inplace */ | |
1264 | 0xffffffff, /* src_mask */ | |
1265 | 0xffffffff, /* dst_mask */ | |
1266 | TRUE), /* pcrel_offset */ | |
1267 | ||
1268 | /* End of group relocations. */ | |
c19d1205 | 1269 | |
c19d1205 ZW |
1270 | HOWTO (R_ARM_MOVW_BREL_NC, /* type */ |
1271 | 0, /* rightshift */ | |
1272 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1273 | 16, /* bitsize */ | |
1274 | FALSE, /* pc_relative */ | |
1275 | 0, /* bitpos */ | |
1276 | complain_overflow_dont,/* complain_on_overflow */ | |
1277 | bfd_elf_generic_reloc, /* special_function */ | |
1278 | "R_ARM_MOVW_BREL_NC", /* name */ | |
1279 | FALSE, /* partial_inplace */ | |
1280 | 0x0000ffff, /* src_mask */ | |
1281 | 0x0000ffff, /* dst_mask */ | |
1282 | FALSE), /* pcrel_offset */ | |
1283 | ||
1284 | HOWTO (R_ARM_MOVT_BREL, /* type */ | |
1285 | 0, /* rightshift */ | |
1286 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1287 | 16, /* bitsize */ | |
1288 | FALSE, /* pc_relative */ | |
1289 | 0, /* bitpos */ | |
1290 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1291 | bfd_elf_generic_reloc, /* special_function */ | |
1292 | "R_ARM_MOVT_BREL", /* name */ | |
1293 | FALSE, /* partial_inplace */ | |
1294 | 0x0000ffff, /* src_mask */ | |
1295 | 0x0000ffff, /* dst_mask */ | |
1296 | FALSE), /* pcrel_offset */ | |
1297 | ||
1298 | HOWTO (R_ARM_MOVW_BREL, /* type */ | |
1299 | 0, /* rightshift */ | |
1300 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1301 | 16, /* bitsize */ | |
1302 | FALSE, /* pc_relative */ | |
1303 | 0, /* bitpos */ | |
1304 | complain_overflow_dont,/* complain_on_overflow */ | |
1305 | bfd_elf_generic_reloc, /* special_function */ | |
1306 | "R_ARM_MOVW_BREL", /* name */ | |
1307 | FALSE, /* partial_inplace */ | |
1308 | 0x0000ffff, /* src_mask */ | |
1309 | 0x0000ffff, /* dst_mask */ | |
1310 | FALSE), /* pcrel_offset */ | |
1311 | ||
1312 | HOWTO (R_ARM_THM_MOVW_BREL_NC,/* type */ | |
1313 | 0, /* rightshift */ | |
1314 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1315 | 16, /* bitsize */ | |
1316 | FALSE, /* pc_relative */ | |
1317 | 0, /* bitpos */ | |
1318 | complain_overflow_dont,/* complain_on_overflow */ | |
1319 | bfd_elf_generic_reloc, /* special_function */ | |
1320 | "R_ARM_THM_MOVW_BREL_NC",/* name */ | |
1321 | FALSE, /* partial_inplace */ | |
1322 | 0x040f70ff, /* src_mask */ | |
1323 | 0x040f70ff, /* dst_mask */ | |
1324 | FALSE), /* pcrel_offset */ | |
1325 | ||
1326 | HOWTO (R_ARM_THM_MOVT_BREL, /* type */ | |
1327 | 0, /* rightshift */ | |
1328 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1329 | 16, /* bitsize */ | |
1330 | FALSE, /* pc_relative */ | |
1331 | 0, /* bitpos */ | |
1332 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1333 | bfd_elf_generic_reloc, /* special_function */ | |
1334 | "R_ARM_THM_MOVT_BREL", /* name */ | |
1335 | FALSE, /* partial_inplace */ | |
1336 | 0x040f70ff, /* src_mask */ | |
1337 | 0x040f70ff, /* dst_mask */ | |
1338 | FALSE), /* pcrel_offset */ | |
1339 | ||
1340 | HOWTO (R_ARM_THM_MOVW_BREL, /* type */ | |
1341 | 0, /* rightshift */ | |
1342 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1343 | 16, /* bitsize */ | |
1344 | FALSE, /* pc_relative */ | |
1345 | 0, /* bitpos */ | |
1346 | complain_overflow_dont,/* complain_on_overflow */ | |
1347 | bfd_elf_generic_reloc, /* special_function */ | |
1348 | "R_ARM_THM_MOVW_BREL", /* name */ | |
1349 | FALSE, /* partial_inplace */ | |
1350 | 0x040f70ff, /* src_mask */ | |
1351 | 0x040f70ff, /* dst_mask */ | |
1352 | FALSE), /* pcrel_offset */ | |
1353 | ||
1354 | EMPTY_HOWTO (90), /* unallocated */ | |
1355 | EMPTY_HOWTO (91), | |
1356 | EMPTY_HOWTO (92), | |
1357 | EMPTY_HOWTO (93), | |
1358 | ||
1359 | HOWTO (R_ARM_PLT32_ABS, /* type */ | |
1360 | 0, /* rightshift */ | |
1361 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1362 | 32, /* bitsize */ | |
1363 | FALSE, /* pc_relative */ | |
1364 | 0, /* bitpos */ | |
1365 | complain_overflow_dont,/* complain_on_overflow */ | |
1366 | bfd_elf_generic_reloc, /* special_function */ | |
1367 | "R_ARM_PLT32_ABS", /* name */ | |
1368 | FALSE, /* partial_inplace */ | |
1369 | 0xffffffff, /* src_mask */ | |
1370 | 0xffffffff, /* dst_mask */ | |
1371 | FALSE), /* pcrel_offset */ | |
1372 | ||
1373 | HOWTO (R_ARM_GOT_ABS, /* type */ | |
1374 | 0, /* rightshift */ | |
1375 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1376 | 32, /* bitsize */ | |
1377 | FALSE, /* pc_relative */ | |
1378 | 0, /* bitpos */ | |
1379 | complain_overflow_dont,/* complain_on_overflow */ | |
1380 | bfd_elf_generic_reloc, /* special_function */ | |
1381 | "R_ARM_GOT_ABS", /* name */ | |
1382 | FALSE, /* partial_inplace */ | |
1383 | 0xffffffff, /* src_mask */ | |
1384 | 0xffffffff, /* dst_mask */ | |
1385 | FALSE), /* pcrel_offset */ | |
1386 | ||
1387 | HOWTO (R_ARM_GOT_PREL, /* type */ | |
1388 | 0, /* rightshift */ | |
1389 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1390 | 32, /* bitsize */ | |
1391 | TRUE, /* pc_relative */ | |
1392 | 0, /* bitpos */ | |
1393 | complain_overflow_dont, /* complain_on_overflow */ | |
1394 | bfd_elf_generic_reloc, /* special_function */ | |
1395 | "R_ARM_GOT_PREL", /* name */ | |
1396 | FALSE, /* partial_inplace */ | |
1397 | 0xffffffff, /* src_mask */ | |
1398 | 0xffffffff, /* dst_mask */ | |
1399 | TRUE), /* pcrel_offset */ | |
1400 | ||
1401 | HOWTO (R_ARM_GOT_BREL12, /* type */ | |
1402 | 0, /* rightshift */ | |
1403 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1404 | 12, /* bitsize */ | |
1405 | FALSE, /* pc_relative */ | |
1406 | 0, /* bitpos */ | |
1407 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1408 | bfd_elf_generic_reloc, /* special_function */ | |
1409 | "R_ARM_GOT_BREL12", /* name */ | |
1410 | FALSE, /* partial_inplace */ | |
1411 | 0x00000fff, /* src_mask */ | |
1412 | 0x00000fff, /* dst_mask */ | |
1413 | FALSE), /* pcrel_offset */ | |
1414 | ||
1415 | HOWTO (R_ARM_GOTOFF12, /* type */ | |
1416 | 0, /* rightshift */ | |
1417 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1418 | 12, /* bitsize */ | |
1419 | FALSE, /* pc_relative */ | |
1420 | 0, /* bitpos */ | |
1421 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1422 | bfd_elf_generic_reloc, /* special_function */ | |
1423 | "R_ARM_GOTOFF12", /* name */ | |
1424 | FALSE, /* partial_inplace */ | |
1425 | 0x00000fff, /* src_mask */ | |
1426 | 0x00000fff, /* dst_mask */ | |
1427 | FALSE), /* pcrel_offset */ | |
1428 | ||
1429 | EMPTY_HOWTO (R_ARM_GOTRELAX), /* reserved for future GOT-load optimizations */ | |
1430 | ||
1431 | /* GNU extension to record C++ vtable member usage */ | |
1432 | HOWTO (R_ARM_GNU_VTENTRY, /* type */ | |
ba93b8ac DJ |
1433 | 0, /* rightshift */ |
1434 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c19d1205 | 1435 | 0, /* bitsize */ |
ba93b8ac DJ |
1436 | FALSE, /* pc_relative */ |
1437 | 0, /* bitpos */ | |
c19d1205 ZW |
1438 | complain_overflow_dont, /* complain_on_overflow */ |
1439 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
1440 | "R_ARM_GNU_VTENTRY", /* name */ | |
1441 | FALSE, /* partial_inplace */ | |
1442 | 0, /* src_mask */ | |
1443 | 0, /* dst_mask */ | |
1444 | FALSE), /* pcrel_offset */ | |
1445 | ||
1446 | /* GNU extension to record C++ vtable hierarchy */ | |
1447 | HOWTO (R_ARM_GNU_VTINHERIT, /* type */ | |
1448 | 0, /* rightshift */ | |
1449 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1450 | 0, /* bitsize */ | |
1451 | FALSE, /* pc_relative */ | |
1452 | 0, /* bitpos */ | |
1453 | complain_overflow_dont, /* complain_on_overflow */ | |
1454 | NULL, /* special_function */ | |
1455 | "R_ARM_GNU_VTINHERIT", /* name */ | |
1456 | FALSE, /* partial_inplace */ | |
1457 | 0, /* src_mask */ | |
1458 | 0, /* dst_mask */ | |
1459 | FALSE), /* pcrel_offset */ | |
1460 | ||
1461 | HOWTO (R_ARM_THM_JUMP11, /* type */ | |
1462 | 1, /* rightshift */ | |
1463 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1464 | 11, /* bitsize */ | |
1465 | TRUE, /* pc_relative */ | |
1466 | 0, /* bitpos */ | |
1467 | complain_overflow_signed, /* complain_on_overflow */ | |
1468 | bfd_elf_generic_reloc, /* special_function */ | |
1469 | "R_ARM_THM_JUMP11", /* name */ | |
1470 | FALSE, /* partial_inplace */ | |
1471 | 0x000007ff, /* src_mask */ | |
1472 | 0x000007ff, /* dst_mask */ | |
1473 | TRUE), /* pcrel_offset */ | |
1474 | ||
1475 | HOWTO (R_ARM_THM_JUMP8, /* type */ | |
1476 | 1, /* rightshift */ | |
1477 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1478 | 8, /* bitsize */ | |
1479 | TRUE, /* pc_relative */ | |
1480 | 0, /* bitpos */ | |
1481 | complain_overflow_signed, /* complain_on_overflow */ | |
1482 | bfd_elf_generic_reloc, /* special_function */ | |
1483 | "R_ARM_THM_JUMP8", /* name */ | |
1484 | FALSE, /* partial_inplace */ | |
1485 | 0x000000ff, /* src_mask */ | |
1486 | 0x000000ff, /* dst_mask */ | |
1487 | TRUE), /* pcrel_offset */ | |
ba93b8ac | 1488 | |
c19d1205 ZW |
1489 | /* TLS relocations */ |
1490 | HOWTO (R_ARM_TLS_GD32, /* type */ | |
ba93b8ac DJ |
1491 | 0, /* rightshift */ |
1492 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1493 | 32, /* bitsize */ | |
1494 | FALSE, /* pc_relative */ | |
1495 | 0, /* bitpos */ | |
1496 | complain_overflow_bitfield,/* complain_on_overflow */ | |
c19d1205 ZW |
1497 | NULL, /* special_function */ |
1498 | "R_ARM_TLS_GD32", /* name */ | |
ba93b8ac DJ |
1499 | TRUE, /* partial_inplace */ |
1500 | 0xffffffff, /* src_mask */ | |
1501 | 0xffffffff, /* dst_mask */ | |
c19d1205 | 1502 | FALSE), /* pcrel_offset */ |
ba93b8ac | 1503 | |
ba93b8ac DJ |
1504 | HOWTO (R_ARM_TLS_LDM32, /* type */ |
1505 | 0, /* rightshift */ | |
1506 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1507 | 32, /* bitsize */ | |
1508 | FALSE, /* pc_relative */ | |
1509 | 0, /* bitpos */ | |
1510 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1511 | bfd_elf_generic_reloc, /* special_function */ | |
1512 | "R_ARM_TLS_LDM32", /* name */ | |
1513 | TRUE, /* partial_inplace */ | |
1514 | 0xffffffff, /* src_mask */ | |
1515 | 0xffffffff, /* dst_mask */ | |
c19d1205 | 1516 | FALSE), /* pcrel_offset */ |
ba93b8ac | 1517 | |
c19d1205 | 1518 | HOWTO (R_ARM_TLS_LDO32, /* type */ |
ba93b8ac DJ |
1519 | 0, /* rightshift */ |
1520 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1521 | 32, /* bitsize */ | |
1522 | FALSE, /* pc_relative */ | |
1523 | 0, /* bitpos */ | |
1524 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1525 | bfd_elf_generic_reloc, /* special_function */ | |
c19d1205 | 1526 | "R_ARM_TLS_LDO32", /* name */ |
ba93b8ac DJ |
1527 | TRUE, /* partial_inplace */ |
1528 | 0xffffffff, /* src_mask */ | |
1529 | 0xffffffff, /* dst_mask */ | |
c19d1205 | 1530 | FALSE), /* pcrel_offset */ |
ba93b8ac | 1531 | |
ba93b8ac DJ |
1532 | HOWTO (R_ARM_TLS_IE32, /* type */ |
1533 | 0, /* rightshift */ | |
1534 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1535 | 32, /* bitsize */ | |
1536 | FALSE, /* pc_relative */ | |
1537 | 0, /* bitpos */ | |
1538 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1539 | NULL, /* special_function */ | |
1540 | "R_ARM_TLS_IE32", /* name */ | |
1541 | TRUE, /* partial_inplace */ | |
1542 | 0xffffffff, /* src_mask */ | |
1543 | 0xffffffff, /* dst_mask */ | |
c19d1205 | 1544 | FALSE), /* pcrel_offset */ |
7f266840 | 1545 | |
c19d1205 | 1546 | HOWTO (R_ARM_TLS_LE32, /* type */ |
7f266840 DJ |
1547 | 0, /* rightshift */ |
1548 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c19d1205 | 1549 | 32, /* bitsize */ |
7f266840 DJ |
1550 | FALSE, /* pc_relative */ |
1551 | 0, /* bitpos */ | |
c19d1205 ZW |
1552 | complain_overflow_bitfield,/* complain_on_overflow */ |
1553 | bfd_elf_generic_reloc, /* special_function */ | |
1554 | "R_ARM_TLS_LE32", /* name */ | |
1555 | TRUE, /* partial_inplace */ | |
1556 | 0xffffffff, /* src_mask */ | |
1557 | 0xffffffff, /* dst_mask */ | |
1558 | FALSE), /* pcrel_offset */ | |
7f266840 | 1559 | |
c19d1205 ZW |
1560 | HOWTO (R_ARM_TLS_LDO12, /* type */ |
1561 | 0, /* rightshift */ | |
1562 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1563 | 12, /* bitsize */ | |
1564 | FALSE, /* pc_relative */ | |
7f266840 | 1565 | 0, /* bitpos */ |
c19d1205 | 1566 | complain_overflow_bitfield,/* complain_on_overflow */ |
7f266840 | 1567 | bfd_elf_generic_reloc, /* special_function */ |
c19d1205 | 1568 | "R_ARM_TLS_LDO12", /* name */ |
7f266840 | 1569 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
1570 | 0x00000fff, /* src_mask */ |
1571 | 0x00000fff, /* dst_mask */ | |
1572 | FALSE), /* pcrel_offset */ | |
7f266840 | 1573 | |
c19d1205 ZW |
1574 | HOWTO (R_ARM_TLS_LE12, /* type */ |
1575 | 0, /* rightshift */ | |
1576 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1577 | 12, /* bitsize */ | |
1578 | FALSE, /* pc_relative */ | |
7f266840 | 1579 | 0, /* bitpos */ |
c19d1205 | 1580 | complain_overflow_bitfield,/* complain_on_overflow */ |
7f266840 | 1581 | bfd_elf_generic_reloc, /* special_function */ |
c19d1205 | 1582 | "R_ARM_TLS_LE12", /* name */ |
7f266840 | 1583 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
1584 | 0x00000fff, /* src_mask */ |
1585 | 0x00000fff, /* dst_mask */ | |
1586 | FALSE), /* pcrel_offset */ | |
7f266840 | 1587 | |
c19d1205 | 1588 | HOWTO (R_ARM_TLS_IE12GP, /* type */ |
7f266840 DJ |
1589 | 0, /* rightshift */ |
1590 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c19d1205 ZW |
1591 | 12, /* bitsize */ |
1592 | FALSE, /* pc_relative */ | |
7f266840 | 1593 | 0, /* bitpos */ |
c19d1205 | 1594 | complain_overflow_bitfield,/* complain_on_overflow */ |
7f266840 | 1595 | bfd_elf_generic_reloc, /* special_function */ |
c19d1205 | 1596 | "R_ARM_TLS_IE12GP", /* name */ |
7f266840 | 1597 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
1598 | 0x00000fff, /* src_mask */ |
1599 | 0x00000fff, /* dst_mask */ | |
1600 | FALSE), /* pcrel_offset */ | |
1601 | }; | |
1602 | ||
1603 | /* 112-127 private relocations | |
1604 | 128 R_ARM_ME_TOO, obsolete | |
1605 | 129-255 unallocated in AAELF. | |
7f266840 | 1606 | |
c19d1205 ZW |
1607 | 249-255 extended, currently unused, relocations: */ |
1608 | ||
4962c51a | 1609 | static reloc_howto_type elf32_arm_howto_table_2[4] = |
7f266840 DJ |
1610 | { |
1611 | HOWTO (R_ARM_RREL32, /* type */ | |
1612 | 0, /* rightshift */ | |
1613 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1614 | 0, /* bitsize */ | |
1615 | FALSE, /* pc_relative */ | |
1616 | 0, /* bitpos */ | |
1617 | complain_overflow_dont,/* complain_on_overflow */ | |
1618 | bfd_elf_generic_reloc, /* special_function */ | |
1619 | "R_ARM_RREL32", /* name */ | |
1620 | FALSE, /* partial_inplace */ | |
1621 | 0, /* src_mask */ | |
1622 | 0, /* dst_mask */ | |
1623 | FALSE), /* pcrel_offset */ | |
1624 | ||
1625 | HOWTO (R_ARM_RABS32, /* type */ | |
1626 | 0, /* rightshift */ | |
1627 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1628 | 0, /* bitsize */ | |
1629 | FALSE, /* pc_relative */ | |
1630 | 0, /* bitpos */ | |
1631 | complain_overflow_dont,/* complain_on_overflow */ | |
1632 | bfd_elf_generic_reloc, /* special_function */ | |
1633 | "R_ARM_RABS32", /* name */ | |
1634 | FALSE, /* partial_inplace */ | |
1635 | 0, /* src_mask */ | |
1636 | 0, /* dst_mask */ | |
1637 | FALSE), /* pcrel_offset */ | |
1638 | ||
1639 | HOWTO (R_ARM_RPC24, /* type */ | |
1640 | 0, /* rightshift */ | |
1641 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1642 | 0, /* bitsize */ | |
1643 | FALSE, /* pc_relative */ | |
1644 | 0, /* bitpos */ | |
1645 | complain_overflow_dont,/* complain_on_overflow */ | |
1646 | bfd_elf_generic_reloc, /* special_function */ | |
1647 | "R_ARM_RPC24", /* name */ | |
1648 | FALSE, /* partial_inplace */ | |
1649 | 0, /* src_mask */ | |
1650 | 0, /* dst_mask */ | |
1651 | FALSE), /* pcrel_offset */ | |
1652 | ||
1653 | HOWTO (R_ARM_RBASE, /* type */ | |
1654 | 0, /* rightshift */ | |
1655 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1656 | 0, /* bitsize */ | |
1657 | FALSE, /* pc_relative */ | |
1658 | 0, /* bitpos */ | |
1659 | complain_overflow_dont,/* complain_on_overflow */ | |
1660 | bfd_elf_generic_reloc, /* special_function */ | |
1661 | "R_ARM_RBASE", /* name */ | |
1662 | FALSE, /* partial_inplace */ | |
1663 | 0, /* src_mask */ | |
1664 | 0, /* dst_mask */ | |
1665 | FALSE) /* pcrel_offset */ | |
1666 | }; | |
1667 | ||
1668 | static reloc_howto_type * | |
1669 | elf32_arm_howto_from_type (unsigned int r_type) | |
1670 | { | |
c19d1205 ZW |
1671 | if (r_type < NUM_ELEM (elf32_arm_howto_table_1)) |
1672 | return &elf32_arm_howto_table_1[r_type]; | |
ba93b8ac | 1673 | |
c19d1205 ZW |
1674 | if (r_type >= R_ARM_RREL32 |
1675 | && r_type < R_ARM_RREL32 + NUM_ELEM (elf32_arm_howto_table_2)) | |
4962c51a | 1676 | return &elf32_arm_howto_table_2[r_type - R_ARM_RREL32]; |
7f266840 | 1677 | |
c19d1205 | 1678 | return NULL; |
7f266840 DJ |
1679 | } |
1680 | ||
1681 | static void | |
1682 | elf32_arm_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED, arelent * bfd_reloc, | |
1683 | Elf_Internal_Rela * elf_reloc) | |
1684 | { | |
1685 | unsigned int r_type; | |
1686 | ||
1687 | r_type = ELF32_R_TYPE (elf_reloc->r_info); | |
1688 | bfd_reloc->howto = elf32_arm_howto_from_type (r_type); | |
1689 | } | |
1690 | ||
1691 | struct elf32_arm_reloc_map | |
1692 | { | |
1693 | bfd_reloc_code_real_type bfd_reloc_val; | |
1694 | unsigned char elf_reloc_val; | |
1695 | }; | |
1696 | ||
1697 | /* All entries in this list must also be present in elf32_arm_howto_table. */ | |
1698 | static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] = | |
1699 | { | |
1700 | {BFD_RELOC_NONE, R_ARM_NONE}, | |
1701 | {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24}, | |
39b41c9c PB |
1702 | {BFD_RELOC_ARM_PCREL_CALL, R_ARM_CALL}, |
1703 | {BFD_RELOC_ARM_PCREL_JUMP, R_ARM_JUMP24}, | |
7f266840 DJ |
1704 | {BFD_RELOC_ARM_PCREL_BLX, R_ARM_XPC25}, |
1705 | {BFD_RELOC_THUMB_PCREL_BLX, R_ARM_THM_XPC22}, | |
1706 | {BFD_RELOC_32, R_ARM_ABS32}, | |
1707 | {BFD_RELOC_32_PCREL, R_ARM_REL32}, | |
1708 | {BFD_RELOC_8, R_ARM_ABS8}, | |
1709 | {BFD_RELOC_16, R_ARM_ABS16}, | |
1710 | {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12}, | |
1711 | {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5}, | |
c19d1205 ZW |
1712 | {BFD_RELOC_THUMB_PCREL_BRANCH25, R_ARM_THM_JUMP24}, |
1713 | {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_CALL}, | |
1714 | {BFD_RELOC_THUMB_PCREL_BRANCH12, R_ARM_THM_JUMP11}, | |
1715 | {BFD_RELOC_THUMB_PCREL_BRANCH20, R_ARM_THM_JUMP19}, | |
1716 | {BFD_RELOC_THUMB_PCREL_BRANCH9, R_ARM_THM_JUMP8}, | |
1717 | {BFD_RELOC_THUMB_PCREL_BRANCH7, R_ARM_THM_JUMP6}, | |
7f266840 DJ |
1718 | {BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT}, |
1719 | {BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT}, | |
1720 | {BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE}, | |
c19d1205 | 1721 | {BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF32}, |
7f266840 DJ |
1722 | {BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC}, |
1723 | {BFD_RELOC_ARM_GOT32, R_ARM_GOT32}, | |
1724 | {BFD_RELOC_ARM_PLT32, R_ARM_PLT32}, | |
1725 | {BFD_RELOC_ARM_TARGET1, R_ARM_TARGET1}, | |
1726 | {BFD_RELOC_ARM_ROSEGREL32, R_ARM_ROSEGREL32}, | |
1727 | {BFD_RELOC_ARM_SBREL32, R_ARM_SBREL32}, | |
1728 | {BFD_RELOC_ARM_PREL31, R_ARM_PREL31}, | |
ba93b8ac DJ |
1729 | {BFD_RELOC_ARM_TARGET2, R_ARM_TARGET2}, |
1730 | {BFD_RELOC_ARM_PLT32, R_ARM_PLT32}, | |
1731 | {BFD_RELOC_ARM_TLS_GD32, R_ARM_TLS_GD32}, | |
1732 | {BFD_RELOC_ARM_TLS_LDO32, R_ARM_TLS_LDO32}, | |
1733 | {BFD_RELOC_ARM_TLS_LDM32, R_ARM_TLS_LDM32}, | |
1734 | {BFD_RELOC_ARM_TLS_DTPMOD32, R_ARM_TLS_DTPMOD32}, | |
1735 | {BFD_RELOC_ARM_TLS_DTPOFF32, R_ARM_TLS_DTPOFF32}, | |
1736 | {BFD_RELOC_ARM_TLS_TPOFF32, R_ARM_TLS_TPOFF32}, | |
1737 | {BFD_RELOC_ARM_TLS_IE32, R_ARM_TLS_IE32}, | |
1738 | {BFD_RELOC_ARM_TLS_LE32, R_ARM_TLS_LE32}, | |
c19d1205 ZW |
1739 | {BFD_RELOC_VTABLE_INHERIT, R_ARM_GNU_VTINHERIT}, |
1740 | {BFD_RELOC_VTABLE_ENTRY, R_ARM_GNU_VTENTRY}, | |
b6895b4f PB |
1741 | {BFD_RELOC_ARM_MOVW, R_ARM_MOVW_ABS_NC}, |
1742 | {BFD_RELOC_ARM_MOVT, R_ARM_MOVT_ABS}, | |
1743 | {BFD_RELOC_ARM_MOVW_PCREL, R_ARM_MOVW_PREL_NC}, | |
1744 | {BFD_RELOC_ARM_MOVT_PCREL, R_ARM_MOVT_PREL}, | |
1745 | {BFD_RELOC_ARM_THUMB_MOVW, R_ARM_THM_MOVW_ABS_NC}, | |
1746 | {BFD_RELOC_ARM_THUMB_MOVT, R_ARM_THM_MOVT_ABS}, | |
1747 | {BFD_RELOC_ARM_THUMB_MOVW_PCREL, R_ARM_THM_MOVW_PREL_NC}, | |
1748 | {BFD_RELOC_ARM_THUMB_MOVT_PCREL, R_ARM_THM_MOVT_PREL}, | |
4962c51a MS |
1749 | {BFD_RELOC_ARM_ALU_PC_G0_NC, R_ARM_ALU_PC_G0_NC}, |
1750 | {BFD_RELOC_ARM_ALU_PC_G0, R_ARM_ALU_PC_G0}, | |
1751 | {BFD_RELOC_ARM_ALU_PC_G1_NC, R_ARM_ALU_PC_G1_NC}, | |
1752 | {BFD_RELOC_ARM_ALU_PC_G1, R_ARM_ALU_PC_G1}, | |
1753 | {BFD_RELOC_ARM_ALU_PC_G2, R_ARM_ALU_PC_G2}, | |
1754 | {BFD_RELOC_ARM_LDR_PC_G0, R_ARM_LDR_PC_G0}, | |
1755 | {BFD_RELOC_ARM_LDR_PC_G1, R_ARM_LDR_PC_G1}, | |
1756 | {BFD_RELOC_ARM_LDR_PC_G2, R_ARM_LDR_PC_G2}, | |
1757 | {BFD_RELOC_ARM_LDRS_PC_G0, R_ARM_LDRS_PC_G0}, | |
1758 | {BFD_RELOC_ARM_LDRS_PC_G1, R_ARM_LDRS_PC_G1}, | |
1759 | {BFD_RELOC_ARM_LDRS_PC_G2, R_ARM_LDRS_PC_G2}, | |
1760 | {BFD_RELOC_ARM_LDC_PC_G0, R_ARM_LDC_PC_G0}, | |
1761 | {BFD_RELOC_ARM_LDC_PC_G1, R_ARM_LDC_PC_G1}, | |
1762 | {BFD_RELOC_ARM_LDC_PC_G2, R_ARM_LDC_PC_G2}, | |
1763 | {BFD_RELOC_ARM_ALU_SB_G0_NC, R_ARM_ALU_SB_G0_NC}, | |
1764 | {BFD_RELOC_ARM_ALU_SB_G0, R_ARM_ALU_SB_G0}, | |
1765 | {BFD_RELOC_ARM_ALU_SB_G1_NC, R_ARM_ALU_SB_G1_NC}, | |
1766 | {BFD_RELOC_ARM_ALU_SB_G1, R_ARM_ALU_SB_G1}, | |
1767 | {BFD_RELOC_ARM_ALU_SB_G2, R_ARM_ALU_SB_G2}, | |
1768 | {BFD_RELOC_ARM_LDR_SB_G0, R_ARM_LDR_SB_G0}, | |
1769 | {BFD_RELOC_ARM_LDR_SB_G1, R_ARM_LDR_SB_G1}, | |
1770 | {BFD_RELOC_ARM_LDR_SB_G2, R_ARM_LDR_SB_G2}, | |
1771 | {BFD_RELOC_ARM_LDRS_SB_G0, R_ARM_LDRS_SB_G0}, | |
1772 | {BFD_RELOC_ARM_LDRS_SB_G1, R_ARM_LDRS_SB_G1}, | |
1773 | {BFD_RELOC_ARM_LDRS_SB_G2, R_ARM_LDRS_SB_G2}, | |
1774 | {BFD_RELOC_ARM_LDC_SB_G0, R_ARM_LDC_SB_G0}, | |
1775 | {BFD_RELOC_ARM_LDC_SB_G1, R_ARM_LDC_SB_G1}, | |
845b51d6 PB |
1776 | {BFD_RELOC_ARM_LDC_SB_G2, R_ARM_LDC_SB_G2}, |
1777 | {BFD_RELOC_ARM_V4BX, R_ARM_V4BX} | |
7f266840 DJ |
1778 | }; |
1779 | ||
1780 | static reloc_howto_type * | |
f1c71a59 ZW |
1781 | elf32_arm_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
1782 | bfd_reloc_code_real_type code) | |
7f266840 DJ |
1783 | { |
1784 | unsigned int i; | |
c19d1205 ZW |
1785 | for (i = 0; i < NUM_ELEM (elf32_arm_reloc_map); i ++) |
1786 | if (elf32_arm_reloc_map[i].bfd_reloc_val == code) | |
1787 | return elf32_arm_howto_from_type (elf32_arm_reloc_map[i].elf_reloc_val); | |
7f266840 | 1788 | |
c19d1205 | 1789 | return NULL; |
7f266840 DJ |
1790 | } |
1791 | ||
157090f7 AM |
1792 | static reloc_howto_type * |
1793 | elf32_arm_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1794 | const char *r_name) | |
1795 | { | |
1796 | unsigned int i; | |
1797 | ||
1798 | for (i = 0; | |
1799 | i < (sizeof (elf32_arm_howto_table_1) | |
1800 | / sizeof (elf32_arm_howto_table_1[0])); | |
1801 | i++) | |
1802 | if (elf32_arm_howto_table_1[i].name != NULL | |
1803 | && strcasecmp (elf32_arm_howto_table_1[i].name, r_name) == 0) | |
1804 | return &elf32_arm_howto_table_1[i]; | |
1805 | ||
1806 | for (i = 0; | |
1807 | i < (sizeof (elf32_arm_howto_table_2) | |
1808 | / sizeof (elf32_arm_howto_table_2[0])); | |
1809 | i++) | |
1810 | if (elf32_arm_howto_table_2[i].name != NULL | |
1811 | && strcasecmp (elf32_arm_howto_table_2[i].name, r_name) == 0) | |
1812 | return &elf32_arm_howto_table_2[i]; | |
1813 | ||
1814 | return NULL; | |
1815 | } | |
1816 | ||
7f266840 DJ |
1817 | /* Support for core dump NOTE sections */ |
1818 | static bfd_boolean | |
f1c71a59 | 1819 | elf32_arm_nabi_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
7f266840 DJ |
1820 | { |
1821 | int offset; | |
1822 | size_t size; | |
1823 | ||
1824 | switch (note->descsz) | |
1825 | { | |
1826 | default: | |
1827 | return FALSE; | |
1828 | ||
1829 | case 148: /* Linux/ARM 32-bit*/ | |
1830 | /* pr_cursig */ | |
1831 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
1832 | ||
1833 | /* pr_pid */ | |
1834 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); | |
1835 | ||
1836 | /* pr_reg */ | |
1837 | offset = 72; | |
1838 | size = 72; | |
1839 | ||
1840 | break; | |
1841 | } | |
1842 | ||
1843 | /* Make a ".reg/999" section. */ | |
1844 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
1845 | size, note->descpos + offset); | |
1846 | } | |
1847 | ||
1848 | static bfd_boolean | |
f1c71a59 | 1849 | elf32_arm_nabi_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
7f266840 DJ |
1850 | { |
1851 | switch (note->descsz) | |
1852 | { | |
1853 | default: | |
1854 | return FALSE; | |
1855 | ||
1856 | case 124: /* Linux/ARM elf_prpsinfo */ | |
1857 | elf_tdata (abfd)->core_program | |
1858 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); | |
1859 | elf_tdata (abfd)->core_command | |
1860 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); | |
1861 | } | |
1862 | ||
1863 | /* Note that for some reason, a spurious space is tacked | |
1864 | onto the end of the args in some (at least one anyway) | |
1865 | implementations, so strip it off if it exists. */ | |
1866 | ||
1867 | { | |
1868 | char *command = elf_tdata (abfd)->core_command; | |
1869 | int n = strlen (command); | |
1870 | ||
1871 | if (0 < n && command[n - 1] == ' ') | |
1872 | command[n - 1] = '\0'; | |
1873 | } | |
1874 | ||
1875 | return TRUE; | |
1876 | } | |
1877 | ||
1878 | #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec | |
1879 | #define TARGET_LITTLE_NAME "elf32-littlearm" | |
1880 | #define TARGET_BIG_SYM bfd_elf32_bigarm_vec | |
1881 | #define TARGET_BIG_NAME "elf32-bigarm" | |
1882 | ||
1883 | #define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus | |
1884 | #define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo | |
1885 | ||
252b5132 RH |
1886 | typedef unsigned long int insn32; |
1887 | typedef unsigned short int insn16; | |
1888 | ||
3a4a14e9 PB |
1889 | /* In lieu of proper flags, assume all EABIv4 or later objects are |
1890 | interworkable. */ | |
57e8b36a | 1891 | #define INTERWORK_FLAG(abfd) \ |
3a4a14e9 | 1892 | (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \ |
85a84e7a | 1893 | || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK)) |
9b485d32 | 1894 | |
252b5132 RH |
1895 | /* The linker script knows the section names for placement. |
1896 | The entry_names are used to do simple name mangling on the stubs. | |
1897 | Given a function name, and its type, the stub can be found. The | |
9b485d32 | 1898 | name can be changed. The only requirement is the %s be present. */ |
252b5132 RH |
1899 | #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t" |
1900 | #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb" | |
1901 | ||
1902 | #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7" | |
1903 | #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm" | |
1904 | ||
c7b8f16e JB |
1905 | #define VFP11_ERRATUM_VENEER_SECTION_NAME ".vfp11_veneer" |
1906 | #define VFP11_ERRATUM_VENEER_ENTRY_NAME "__vfp11_veneer_%x" | |
1907 | ||
845b51d6 PB |
1908 | #define ARM_BX_GLUE_SECTION_NAME ".v4_bx" |
1909 | #define ARM_BX_GLUE_ENTRY_NAME "__bx_r%d" | |
1910 | ||
252b5132 RH |
1911 | /* The name of the dynamic interpreter. This is put in the .interp |
1912 | section. */ | |
1913 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
1914 | ||
5e681ec4 PB |
1915 | #ifdef FOUR_WORD_PLT |
1916 | ||
252b5132 RH |
1917 | /* The first entry in a procedure linkage table looks like |
1918 | this. It is set up so that any shared library function that is | |
59f2c4e7 | 1919 | called before the relocation has been set up calls the dynamic |
9b485d32 | 1920 | linker first. */ |
e5a52504 | 1921 | static const bfd_vma elf32_arm_plt0_entry [] = |
5e681ec4 PB |
1922 | { |
1923 | 0xe52de004, /* str lr, [sp, #-4]! */ | |
1924 | 0xe59fe010, /* ldr lr, [pc, #16] */ | |
1925 | 0xe08fe00e, /* add lr, pc, lr */ | |
1926 | 0xe5bef008, /* ldr pc, [lr, #8]! */ | |
1927 | }; | |
1928 | ||
1929 | /* Subsequent entries in a procedure linkage table look like | |
1930 | this. */ | |
e5a52504 | 1931 | static const bfd_vma elf32_arm_plt_entry [] = |
5e681ec4 PB |
1932 | { |
1933 | 0xe28fc600, /* add ip, pc, #NN */ | |
1934 | 0xe28cca00, /* add ip, ip, #NN */ | |
1935 | 0xe5bcf000, /* ldr pc, [ip, #NN]! */ | |
1936 | 0x00000000, /* unused */ | |
1937 | }; | |
1938 | ||
1939 | #else | |
1940 | ||
5e681ec4 PB |
1941 | /* The first entry in a procedure linkage table looks like |
1942 | this. It is set up so that any shared library function that is | |
1943 | called before the relocation has been set up calls the dynamic | |
1944 | linker first. */ | |
e5a52504 | 1945 | static const bfd_vma elf32_arm_plt0_entry [] = |
917583ad | 1946 | { |
5e681ec4 PB |
1947 | 0xe52de004, /* str lr, [sp, #-4]! */ |
1948 | 0xe59fe004, /* ldr lr, [pc, #4] */ | |
1949 | 0xe08fe00e, /* add lr, pc, lr */ | |
1950 | 0xe5bef008, /* ldr pc, [lr, #8]! */ | |
1951 | 0x00000000, /* &GOT[0] - . */ | |
917583ad | 1952 | }; |
252b5132 RH |
1953 | |
1954 | /* Subsequent entries in a procedure linkage table look like | |
1955 | this. */ | |
e5a52504 | 1956 | static const bfd_vma elf32_arm_plt_entry [] = |
5e681ec4 PB |
1957 | { |
1958 | 0xe28fc600, /* add ip, pc, #0xNN00000 */ | |
1959 | 0xe28cca00, /* add ip, ip, #0xNN000 */ | |
1960 | 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */ | |
1961 | }; | |
1962 | ||
1963 | #endif | |
252b5132 | 1964 | |
00a97672 RS |
1965 | /* The format of the first entry in the procedure linkage table |
1966 | for a VxWorks executable. */ | |
1967 | static const bfd_vma elf32_arm_vxworks_exec_plt0_entry[] = | |
1968 | { | |
1969 | 0xe52dc008, /* str ip,[sp,#-8]! */ | |
1970 | 0xe59fc000, /* ldr ip,[pc] */ | |
1971 | 0xe59cf008, /* ldr pc,[ip,#8] */ | |
1972 | 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */ | |
1973 | }; | |
1974 | ||
1975 | /* The format of subsequent entries in a VxWorks executable. */ | |
1976 | static const bfd_vma elf32_arm_vxworks_exec_plt_entry[] = | |
1977 | { | |
1978 | 0xe59fc000, /* ldr ip,[pc] */ | |
1979 | 0xe59cf000, /* ldr pc,[ip] */ | |
1980 | 0x00000000, /* .long @got */ | |
1981 | 0xe59fc000, /* ldr ip,[pc] */ | |
1982 | 0xea000000, /* b _PLT */ | |
1983 | 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */ | |
1984 | }; | |
1985 | ||
1986 | /* The format of entries in a VxWorks shared library. */ | |
1987 | static const bfd_vma elf32_arm_vxworks_shared_plt_entry[] = | |
1988 | { | |
1989 | 0xe59fc000, /* ldr ip,[pc] */ | |
1990 | 0xe79cf009, /* ldr pc,[ip,r9] */ | |
1991 | 0x00000000, /* .long @got */ | |
1992 | 0xe59fc000, /* ldr ip,[pc] */ | |
1993 | 0xe599f008, /* ldr pc,[r9,#8] */ | |
1994 | 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */ | |
1995 | }; | |
1996 | ||
b7693d02 DJ |
1997 | /* An initial stub used if the PLT entry is referenced from Thumb code. */ |
1998 | #define PLT_THUMB_STUB_SIZE 4 | |
1999 | static const bfd_vma elf32_arm_plt_thumb_stub [] = | |
2000 | { | |
2001 | 0x4778, /* bx pc */ | |
2002 | 0x46c0 /* nop */ | |
2003 | }; | |
2004 | ||
e5a52504 MM |
2005 | /* The entries in a PLT when using a DLL-based target with multiple |
2006 | address spaces. */ | |
2007 | static const bfd_vma elf32_arm_symbian_plt_entry [] = | |
2008 | { | |
83a358aa | 2009 | 0xe51ff004, /* ldr pc, [pc, #-4] */ |
e5a52504 MM |
2010 | 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */ |
2011 | }; | |
2012 | ||
e489d0ae PB |
2013 | /* Used to build a map of a section. This is required for mixed-endian |
2014 | code/data. */ | |
2015 | ||
2016 | typedef struct elf32_elf_section_map | |
2017 | { | |
2018 | bfd_vma vma; | |
2019 | char type; | |
2020 | } | |
2021 | elf32_arm_section_map; | |
2022 | ||
c7b8f16e JB |
2023 | /* Information about a VFP11 erratum veneer, or a branch to such a veneer. */ |
2024 | ||
2025 | typedef enum | |
2026 | { | |
2027 | VFP11_ERRATUM_BRANCH_TO_ARM_VENEER, | |
2028 | VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER, | |
2029 | VFP11_ERRATUM_ARM_VENEER, | |
2030 | VFP11_ERRATUM_THUMB_VENEER | |
2031 | } | |
2032 | elf32_vfp11_erratum_type; | |
2033 | ||
2034 | typedef struct elf32_vfp11_erratum_list | |
2035 | { | |
2036 | struct elf32_vfp11_erratum_list *next; | |
2037 | bfd_vma vma; | |
2038 | union | |
2039 | { | |
2040 | struct | |
2041 | { | |
2042 | struct elf32_vfp11_erratum_list *veneer; | |
2043 | unsigned int vfp_insn; | |
2044 | } b; | |
2045 | struct | |
2046 | { | |
2047 | struct elf32_vfp11_erratum_list *branch; | |
2048 | unsigned int id; | |
2049 | } v; | |
2050 | } u; | |
2051 | elf32_vfp11_erratum_type type; | |
2052 | } | |
2053 | elf32_vfp11_erratum_list; | |
2054 | ||
8e3de13a | 2055 | typedef struct _arm_elf_section_data |
e489d0ae PB |
2056 | { |
2057 | struct bfd_elf_section_data elf; | |
8e3de13a | 2058 | unsigned int mapcount; |
c7b8f16e | 2059 | unsigned int mapsize; |
e489d0ae | 2060 | elf32_arm_section_map *map; |
c7b8f16e JB |
2061 | unsigned int erratumcount; |
2062 | elf32_vfp11_erratum_list *erratumlist; | |
8e3de13a NC |
2063 | } |
2064 | _arm_elf_section_data; | |
e489d0ae PB |
2065 | |
2066 | #define elf32_arm_section_data(sec) \ | |
8e3de13a | 2067 | ((_arm_elf_section_data *) elf_section_data (sec)) |
e489d0ae | 2068 | |
ba93b8ac DJ |
2069 | /* The size of the thread control block. */ |
2070 | #define TCB_SIZE 8 | |
2071 | ||
0ffa91dd | 2072 | struct elf_arm_obj_tdata |
ba93b8ac DJ |
2073 | { |
2074 | struct elf_obj_tdata root; | |
2075 | ||
2076 | /* tls_type for each local got entry. */ | |
2077 | char *local_got_tls_type; | |
ee065d83 | 2078 | |
bf21ed78 MS |
2079 | /* Zero to warn when linking objects with incompatible enum sizes. */ |
2080 | int no_enum_size_warning; | |
ba93b8ac DJ |
2081 | }; |
2082 | ||
0ffa91dd NC |
2083 | #define elf_arm_tdata(bfd) \ |
2084 | ((struct elf_arm_obj_tdata *) (bfd)->tdata.any) | |
ba93b8ac | 2085 | |
0ffa91dd NC |
2086 | #define elf32_arm_local_got_tls_type(bfd) \ |
2087 | (elf_arm_tdata (bfd)->local_got_tls_type) | |
2088 | ||
2089 | #define is_arm_elf(bfd) \ | |
2090 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
2091 | && elf_tdata (bfd) != NULL \ | |
2092 | && elf_object_id (bfd) == ARM_ELF_TDATA) | |
ba93b8ac DJ |
2093 | |
2094 | static bfd_boolean | |
2095 | elf32_arm_mkobject (bfd *abfd) | |
2096 | { | |
0ffa91dd NC |
2097 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_arm_obj_tdata), |
2098 | ARM_ELF_TDATA); | |
ba93b8ac DJ |
2099 | } |
2100 | ||
252b5132 RH |
2101 | /* The ARM linker needs to keep track of the number of relocs that it |
2102 | decides to copy in check_relocs for each symbol. This is so that | |
2103 | it can discard PC relative relocs if it doesn't need them when | |
2104 | linking with -Bsymbolic. We store the information in a field | |
2105 | extending the regular ELF linker hash table. */ | |
2106 | ||
ba93b8ac DJ |
2107 | /* This structure keeps track of the number of relocs we have copied |
2108 | for a given symbol. */ | |
5e681ec4 | 2109 | struct elf32_arm_relocs_copied |
917583ad NC |
2110 | { |
2111 | /* Next section. */ | |
5e681ec4 | 2112 | struct elf32_arm_relocs_copied * next; |
917583ad NC |
2113 | /* A section in dynobj. */ |
2114 | asection * section; | |
2115 | /* Number of relocs copied in this section. */ | |
2116 | bfd_size_type count; | |
ba93b8ac DJ |
2117 | /* Number of PC-relative relocs copied in this section. */ |
2118 | bfd_size_type pc_count; | |
917583ad | 2119 | }; |
252b5132 | 2120 | |
ba93b8ac DJ |
2121 | #define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent)) |
2122 | ||
ba96a88f | 2123 | /* Arm ELF linker hash entry. */ |
252b5132 | 2124 | struct elf32_arm_link_hash_entry |
917583ad NC |
2125 | { |
2126 | struct elf_link_hash_entry root; | |
252b5132 | 2127 | |
917583ad | 2128 | /* Number of PC relative relocs copied for this symbol. */ |
5e681ec4 | 2129 | struct elf32_arm_relocs_copied * relocs_copied; |
b7693d02 DJ |
2130 | |
2131 | /* We reference count Thumb references to a PLT entry separately, | |
2132 | so that we can emit the Thumb trampoline only if needed. */ | |
2133 | bfd_signed_vma plt_thumb_refcount; | |
2134 | ||
bd97cb95 DJ |
2135 | /* Some references from Thumb code may be eliminated by BL->BLX |
2136 | conversion, so record them separately. */ | |
2137 | bfd_signed_vma plt_maybe_thumb_refcount; | |
2138 | ||
b7693d02 DJ |
2139 | /* Since PLT entries have variable size if the Thumb prologue is |
2140 | used, we need to record the index into .got.plt instead of | |
2141 | recomputing it from the PLT offset. */ | |
2142 | bfd_signed_vma plt_got_offset; | |
ba93b8ac DJ |
2143 | |
2144 | #define GOT_UNKNOWN 0 | |
2145 | #define GOT_NORMAL 1 | |
2146 | #define GOT_TLS_GD 2 | |
2147 | #define GOT_TLS_IE 4 | |
2148 | unsigned char tls_type; | |
a4fd1a8e PB |
2149 | |
2150 | /* The symbol marking the real symbol location for exported thumb | |
2151 | symbols with Arm stubs. */ | |
2152 | struct elf_link_hash_entry *export_glue; | |
917583ad | 2153 | }; |
252b5132 | 2154 | |
252b5132 | 2155 | /* Traverse an arm ELF linker hash table. */ |
252b5132 RH |
2156 | #define elf32_arm_link_hash_traverse(table, func, info) \ |
2157 | (elf_link_hash_traverse \ | |
2158 | (&(table)->root, \ | |
b7693d02 | 2159 | (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
252b5132 RH |
2160 | (info))) |
2161 | ||
2162 | /* Get the ARM elf linker hash table from a link_info structure. */ | |
2163 | #define elf32_arm_hash_table(info) \ | |
2164 | ((struct elf32_arm_link_hash_table *) ((info)->hash)) | |
2165 | ||
9b485d32 | 2166 | /* ARM ELF linker hash table. */ |
252b5132 | 2167 | struct elf32_arm_link_hash_table |
917583ad NC |
2168 | { |
2169 | /* The main hash table. */ | |
2170 | struct elf_link_hash_table root; | |
252b5132 | 2171 | |
4cc11e76 | 2172 | /* The size in bytes of the section containing the Thumb-to-ARM glue. */ |
dc810e39 | 2173 | bfd_size_type thumb_glue_size; |
252b5132 | 2174 | |
4cc11e76 | 2175 | /* The size in bytes of the section containing the ARM-to-Thumb glue. */ |
dc810e39 | 2176 | bfd_size_type arm_glue_size; |
252b5132 | 2177 | |
845b51d6 PB |
2178 | /* The size in bytes of section containing the ARMv4 BX veneers. */ |
2179 | bfd_size_type bx_glue_size; | |
2180 | ||
2181 | /* Offsets of ARMv4 BX veneers. Bit1 set if present, and Bit0 set when | |
2182 | veneer has been populated. */ | |
2183 | bfd_vma bx_glue_offset[15]; | |
2184 | ||
c7b8f16e JB |
2185 | /* The size in bytes of the section containing glue for VFP11 erratum |
2186 | veneers. */ | |
2187 | bfd_size_type vfp11_erratum_glue_size; | |
2188 | ||
4cc11e76 | 2189 | /* An arbitrary input BFD chosen to hold the glue sections. */ |
917583ad | 2190 | bfd * bfd_of_glue_owner; |
ba96a88f | 2191 | |
e489d0ae PB |
2192 | /* Nonzero to output a BE8 image. */ |
2193 | int byteswap_code; | |
2194 | ||
9c504268 | 2195 | /* Zero if R_ARM_TARGET1 means R_ARM_ABS32. |
87bc043a | 2196 | Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */ |
9c504268 PB |
2197 | int target1_is_rel; |
2198 | ||
eb043451 PB |
2199 | /* The relocation to use for R_ARM_TARGET2 relocations. */ |
2200 | int target2_reloc; | |
2201 | ||
845b51d6 PB |
2202 | /* 0 = Ignore R_ARM_V4BX. |
2203 | 1 = Convert BX to MOV PC. | |
2204 | 2 = Generate v4 interworing stubs. */ | |
319850b4 JB |
2205 | int fix_v4bx; |
2206 | ||
33bfe774 JB |
2207 | /* Nonzero if the ARM/Thumb BLX instructions are available for use. */ |
2208 | int use_blx; | |
2209 | ||
c7b8f16e JB |
2210 | /* What sort of code sequences we should look for which may trigger the |
2211 | VFP11 denorm erratum. */ | |
2212 | bfd_arm_vfp11_fix vfp11_fix; | |
2213 | ||
2214 | /* Global counter for the number of fixes we have emitted. */ | |
2215 | int num_vfp11_fixes; | |
2216 | ||
27e55c4d PB |
2217 | /* Nonzero to force PIC branch veneers. */ |
2218 | int pic_veneer; | |
2219 | ||
e5a52504 MM |
2220 | /* The number of bytes in the initial entry in the PLT. */ |
2221 | bfd_size_type plt_header_size; | |
2222 | ||
2223 | /* The number of bytes in the subsequent PLT etries. */ | |
2224 | bfd_size_type plt_entry_size; | |
2225 | ||
00a97672 RS |
2226 | /* True if the target system is VxWorks. */ |
2227 | int vxworks_p; | |
2228 | ||
e5a52504 MM |
2229 | /* True if the target system is Symbian OS. */ |
2230 | int symbian_p; | |
2231 | ||
4e7fd91e PB |
2232 | /* True if the target uses REL relocations. */ |
2233 | int use_rel; | |
2234 | ||
5e681ec4 PB |
2235 | /* Short-cuts to get to dynamic linker sections. */ |
2236 | asection *sgot; | |
2237 | asection *sgotplt; | |
2238 | asection *srelgot; | |
2239 | asection *splt; | |
2240 | asection *srelplt; | |
2241 | asection *sdynbss; | |
2242 | asection *srelbss; | |
2243 | ||
00a97672 RS |
2244 | /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */ |
2245 | asection *srelplt2; | |
2246 | ||
ba93b8ac DJ |
2247 | /* Data for R_ARM_TLS_LDM32 relocations. */ |
2248 | union { | |
2249 | bfd_signed_vma refcount; | |
2250 | bfd_vma offset; | |
2251 | } tls_ldm_got; | |
2252 | ||
5e681ec4 PB |
2253 | /* Small local sym to section mapping cache. */ |
2254 | struct sym_sec_cache sym_sec; | |
b7693d02 DJ |
2255 | |
2256 | /* For convenience in allocate_dynrelocs. */ | |
2257 | bfd * obfd; | |
917583ad | 2258 | }; |
252b5132 | 2259 | |
780a67af NC |
2260 | /* Create an entry in an ARM ELF linker hash table. */ |
2261 | ||
2262 | static struct bfd_hash_entry * | |
57e8b36a NC |
2263 | elf32_arm_link_hash_newfunc (struct bfd_hash_entry * entry, |
2264 | struct bfd_hash_table * table, | |
2265 | const char * string) | |
780a67af NC |
2266 | { |
2267 | struct elf32_arm_link_hash_entry * ret = | |
2268 | (struct elf32_arm_link_hash_entry *) entry; | |
2269 | ||
2270 | /* Allocate the structure if it has not already been allocated by a | |
2271 | subclass. */ | |
2272 | if (ret == (struct elf32_arm_link_hash_entry *) NULL) | |
57e8b36a NC |
2273 | ret = bfd_hash_allocate (table, sizeof (struct elf32_arm_link_hash_entry)); |
2274 | if (ret == NULL) | |
780a67af NC |
2275 | return (struct bfd_hash_entry *) ret; |
2276 | ||
2277 | /* Call the allocation method of the superclass. */ | |
2278 | ret = ((struct elf32_arm_link_hash_entry *) | |
2279 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
2280 | table, string)); | |
57e8b36a | 2281 | if (ret != NULL) |
b7693d02 DJ |
2282 | { |
2283 | ret->relocs_copied = NULL; | |
ba93b8ac | 2284 | ret->tls_type = GOT_UNKNOWN; |
b7693d02 | 2285 | ret->plt_thumb_refcount = 0; |
bd97cb95 | 2286 | ret->plt_maybe_thumb_refcount = 0; |
b7693d02 | 2287 | ret->plt_got_offset = -1; |
a4fd1a8e | 2288 | ret->export_glue = NULL; |
b7693d02 | 2289 | } |
780a67af NC |
2290 | |
2291 | return (struct bfd_hash_entry *) ret; | |
2292 | } | |
2293 | ||
00a97672 RS |
2294 | /* Return true if NAME is the name of the relocation section associated |
2295 | with S. */ | |
2296 | ||
2297 | static bfd_boolean | |
2298 | reloc_section_p (struct elf32_arm_link_hash_table *htab, | |
2299 | const char *name, asection *s) | |
2300 | { | |
2301 | if (htab->use_rel) | |
0112cd26 | 2302 | return CONST_STRNEQ (name, ".rel") && strcmp (s->name, name + 4) == 0; |
00a97672 | 2303 | else |
0112cd26 | 2304 | return CONST_STRNEQ (name, ".rela") && strcmp (s->name, name + 5) == 0; |
00a97672 RS |
2305 | } |
2306 | ||
2307 | /* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up | |
5e681ec4 PB |
2308 | shortcuts to them in our hash table. */ |
2309 | ||
2310 | static bfd_boolean | |
57e8b36a | 2311 | create_got_section (bfd *dynobj, struct bfd_link_info *info) |
5e681ec4 PB |
2312 | { |
2313 | struct elf32_arm_link_hash_table *htab; | |
2314 | ||
e5a52504 MM |
2315 | htab = elf32_arm_hash_table (info); |
2316 | /* BPABI objects never have a GOT, or associated sections. */ | |
2317 | if (htab->symbian_p) | |
2318 | return TRUE; | |
2319 | ||
5e681ec4 PB |
2320 | if (! _bfd_elf_create_got_section (dynobj, info)) |
2321 | return FALSE; | |
2322 | ||
5e681ec4 PB |
2323 | htab->sgot = bfd_get_section_by_name (dynobj, ".got"); |
2324 | htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
2325 | if (!htab->sgot || !htab->sgotplt) | |
2326 | abort (); | |
2327 | ||
00a97672 RS |
2328 | htab->srelgot = bfd_make_section_with_flags (dynobj, |
2329 | RELOC_SECTION (htab, ".got"), | |
3496cb2a L |
2330 | (SEC_ALLOC | SEC_LOAD |
2331 | | SEC_HAS_CONTENTS | |
2332 | | SEC_IN_MEMORY | |
2333 | | SEC_LINKER_CREATED | |
2334 | | SEC_READONLY)); | |
5e681ec4 | 2335 | if (htab->srelgot == NULL |
5e681ec4 PB |
2336 | || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2)) |
2337 | return FALSE; | |
2338 | return TRUE; | |
2339 | } | |
2340 | ||
00a97672 RS |
2341 | /* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and |
2342 | .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our | |
5e681ec4 PB |
2343 | hash table. */ |
2344 | ||
2345 | static bfd_boolean | |
57e8b36a | 2346 | elf32_arm_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5e681ec4 PB |
2347 | { |
2348 | struct elf32_arm_link_hash_table *htab; | |
2349 | ||
2350 | htab = elf32_arm_hash_table (info); | |
2351 | if (!htab->sgot && !create_got_section (dynobj, info)) | |
2352 | return FALSE; | |
2353 | ||
2354 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
2355 | return FALSE; | |
2356 | ||
2357 | htab->splt = bfd_get_section_by_name (dynobj, ".plt"); | |
00a97672 RS |
2358 | htab->srelplt = bfd_get_section_by_name (dynobj, |
2359 | RELOC_SECTION (htab, ".plt")); | |
5e681ec4 PB |
2360 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); |
2361 | if (!info->shared) | |
00a97672 RS |
2362 | htab->srelbss = bfd_get_section_by_name (dynobj, |
2363 | RELOC_SECTION (htab, ".bss")); | |
2364 | ||
2365 | if (htab->vxworks_p) | |
2366 | { | |
2367 | if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2)) | |
2368 | return FALSE; | |
2369 | ||
2370 | if (info->shared) | |
2371 | { | |
2372 | htab->plt_header_size = 0; | |
2373 | htab->plt_entry_size | |
2374 | = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry); | |
2375 | } | |
2376 | else | |
2377 | { | |
2378 | htab->plt_header_size | |
2379 | = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry); | |
2380 | htab->plt_entry_size | |
2381 | = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry); | |
2382 | } | |
2383 | } | |
5e681ec4 | 2384 | |
e5a52504 MM |
2385 | if (!htab->splt |
2386 | || !htab->srelplt | |
2387 | || !htab->sdynbss | |
5e681ec4 PB |
2388 | || (!info->shared && !htab->srelbss)) |
2389 | abort (); | |
2390 | ||
2391 | return TRUE; | |
2392 | } | |
2393 | ||
2394 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
2395 | ||
2396 | static void | |
fcfa13d2 | 2397 | elf32_arm_copy_indirect_symbol (struct bfd_link_info *info, |
5e681ec4 PB |
2398 | struct elf_link_hash_entry *dir, |
2399 | struct elf_link_hash_entry *ind) | |
2400 | { | |
2401 | struct elf32_arm_link_hash_entry *edir, *eind; | |
2402 | ||
2403 | edir = (struct elf32_arm_link_hash_entry *) dir; | |
2404 | eind = (struct elf32_arm_link_hash_entry *) ind; | |
2405 | ||
2406 | if (eind->relocs_copied != NULL) | |
2407 | { | |
2408 | if (edir->relocs_copied != NULL) | |
2409 | { | |
2410 | struct elf32_arm_relocs_copied **pp; | |
2411 | struct elf32_arm_relocs_copied *p; | |
2412 | ||
fcfa13d2 | 2413 | /* Add reloc counts against the indirect sym to the direct sym |
5e681ec4 PB |
2414 | list. Merge any entries against the same section. */ |
2415 | for (pp = &eind->relocs_copied; (p = *pp) != NULL; ) | |
2416 | { | |
2417 | struct elf32_arm_relocs_copied *q; | |
2418 | ||
2419 | for (q = edir->relocs_copied; q != NULL; q = q->next) | |
2420 | if (q->section == p->section) | |
2421 | { | |
ba93b8ac | 2422 | q->pc_count += p->pc_count; |
5e681ec4 PB |
2423 | q->count += p->count; |
2424 | *pp = p->next; | |
2425 | break; | |
2426 | } | |
2427 | if (q == NULL) | |
2428 | pp = &p->next; | |
2429 | } | |
2430 | *pp = edir->relocs_copied; | |
2431 | } | |
2432 | ||
2433 | edir->relocs_copied = eind->relocs_copied; | |
2434 | eind->relocs_copied = NULL; | |
2435 | } | |
2436 | ||
b34b2d70 | 2437 | if (ind->root.type == bfd_link_hash_indirect) |
ba93b8ac | 2438 | { |
b34b2d70 DJ |
2439 | /* Copy over PLT info. */ |
2440 | edir->plt_thumb_refcount += eind->plt_thumb_refcount; | |
2441 | eind->plt_thumb_refcount = 0; | |
bd97cb95 DJ |
2442 | edir->plt_maybe_thumb_refcount += eind->plt_maybe_thumb_refcount; |
2443 | eind->plt_maybe_thumb_refcount = 0; | |
b34b2d70 DJ |
2444 | |
2445 | if (dir->got.refcount <= 0) | |
2446 | { | |
2447 | edir->tls_type = eind->tls_type; | |
2448 | eind->tls_type = GOT_UNKNOWN; | |
2449 | } | |
ba93b8ac DJ |
2450 | } |
2451 | ||
fcfa13d2 | 2452 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
5e681ec4 PB |
2453 | } |
2454 | ||
9b485d32 | 2455 | /* Create an ARM elf linker hash table. */ |
252b5132 RH |
2456 | |
2457 | static struct bfd_link_hash_table * | |
57e8b36a | 2458 | elf32_arm_link_hash_table_create (bfd *abfd) |
252b5132 RH |
2459 | { |
2460 | struct elf32_arm_link_hash_table *ret; | |
dc810e39 | 2461 | bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table); |
252b5132 | 2462 | |
57e8b36a NC |
2463 | ret = bfd_malloc (amt); |
2464 | if (ret == NULL) | |
252b5132 RH |
2465 | return NULL; |
2466 | ||
57e8b36a | 2467 | if (!_bfd_elf_link_hash_table_init (& ret->root, abfd, |
66eb6687 AM |
2468 | elf32_arm_link_hash_newfunc, |
2469 | sizeof (struct elf32_arm_link_hash_entry))) | |
252b5132 | 2470 | { |
e2d34d7d | 2471 | free (ret); |
252b5132 RH |
2472 | return NULL; |
2473 | } | |
2474 | ||
5e681ec4 PB |
2475 | ret->sgot = NULL; |
2476 | ret->sgotplt = NULL; | |
2477 | ret->srelgot = NULL; | |
2478 | ret->splt = NULL; | |
2479 | ret->srelplt = NULL; | |
2480 | ret->sdynbss = NULL; | |
2481 | ret->srelbss = NULL; | |
00a97672 | 2482 | ret->srelplt2 = NULL; |
252b5132 RH |
2483 | ret->thumb_glue_size = 0; |
2484 | ret->arm_glue_size = 0; | |
845b51d6 PB |
2485 | ret->bx_glue_size = 0; |
2486 | memset (ret->bx_glue_offset, 0, sizeof(ret->bx_glue_offset)); | |
c7b8f16e JB |
2487 | ret->vfp11_fix = BFD_ARM_VFP11_FIX_NONE; |
2488 | ret->vfp11_erratum_glue_size = 0; | |
2489 | ret->num_vfp11_fixes = 0; | |
252b5132 | 2490 | ret->bfd_of_glue_owner = NULL; |
e489d0ae | 2491 | ret->byteswap_code = 0; |
9c504268 | 2492 | ret->target1_is_rel = 0; |
eb043451 | 2493 | ret->target2_reloc = R_ARM_NONE; |
e5a52504 MM |
2494 | #ifdef FOUR_WORD_PLT |
2495 | ret->plt_header_size = 16; | |
2496 | ret->plt_entry_size = 16; | |
2497 | #else | |
2498 | ret->plt_header_size = 20; | |
2499 | ret->plt_entry_size = 12; | |
2500 | #endif | |
33bfe774 JB |
2501 | ret->fix_v4bx = 0; |
2502 | ret->use_blx = 0; | |
00a97672 | 2503 | ret->vxworks_p = 0; |
e5a52504 | 2504 | ret->symbian_p = 0; |
4e7fd91e | 2505 | ret->use_rel = 1; |
5e681ec4 | 2506 | ret->sym_sec.abfd = NULL; |
b7693d02 | 2507 | ret->obfd = abfd; |
ba93b8ac | 2508 | ret->tls_ldm_got.refcount = 0; |
252b5132 RH |
2509 | |
2510 | return &ret->root.root; | |
2511 | } | |
2512 | ||
9b485d32 NC |
2513 | /* Locate the Thumb encoded calling stub for NAME. */ |
2514 | ||
252b5132 | 2515 | static struct elf_link_hash_entry * |
57e8b36a NC |
2516 | find_thumb_glue (struct bfd_link_info *link_info, |
2517 | const char *name, | |
f2a9dd69 | 2518 | char **error_message) |
252b5132 RH |
2519 | { |
2520 | char *tmp_name; | |
2521 | struct elf_link_hash_entry *hash; | |
2522 | struct elf32_arm_link_hash_table *hash_table; | |
2523 | ||
2524 | /* We need a pointer to the armelf specific hash table. */ | |
2525 | hash_table = elf32_arm_hash_table (link_info); | |
2526 | ||
57e8b36a NC |
2527 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
2528 | + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1); | |
252b5132 RH |
2529 | |
2530 | BFD_ASSERT (tmp_name); | |
2531 | ||
2532 | sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); | |
2533 | ||
2534 | hash = elf_link_hash_lookup | |
b34976b6 | 2535 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 | 2536 | |
b1657152 AM |
2537 | if (hash == NULL |
2538 | && asprintf (error_message, _("unable to find THUMB glue '%s' for '%s'"), | |
2539 | tmp_name, name) == -1) | |
2540 | *error_message = (char *) bfd_errmsg (bfd_error_system_call); | |
252b5132 RH |
2541 | |
2542 | free (tmp_name); | |
2543 | ||
2544 | return hash; | |
2545 | } | |
2546 | ||
9b485d32 NC |
2547 | /* Locate the ARM encoded calling stub for NAME. */ |
2548 | ||
252b5132 | 2549 | static struct elf_link_hash_entry * |
57e8b36a NC |
2550 | find_arm_glue (struct bfd_link_info *link_info, |
2551 | const char *name, | |
f2a9dd69 | 2552 | char **error_message) |
252b5132 RH |
2553 | { |
2554 | char *tmp_name; | |
2555 | struct elf_link_hash_entry *myh; | |
2556 | struct elf32_arm_link_hash_table *hash_table; | |
2557 | ||
2558 | /* We need a pointer to the elfarm specific hash table. */ | |
2559 | hash_table = elf32_arm_hash_table (link_info); | |
2560 | ||
57e8b36a NC |
2561 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
2562 | + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1); | |
252b5132 RH |
2563 | |
2564 | BFD_ASSERT (tmp_name); | |
2565 | ||
2566 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); | |
2567 | ||
2568 | myh = elf_link_hash_lookup | |
b34976b6 | 2569 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 | 2570 | |
b1657152 AM |
2571 | if (myh == NULL |
2572 | && asprintf (error_message, _("unable to find ARM glue '%s' for '%s'"), | |
2573 | tmp_name, name) == -1) | |
2574 | *error_message = (char *) bfd_errmsg (bfd_error_system_call); | |
252b5132 RH |
2575 | |
2576 | free (tmp_name); | |
2577 | ||
2578 | return myh; | |
2579 | } | |
2580 | ||
8f6277f5 | 2581 | /* ARM->Thumb glue (static images): |
252b5132 RH |
2582 | |
2583 | .arm | |
2584 | __func_from_arm: | |
2585 | ldr r12, __func_addr | |
2586 | bx r12 | |
2587 | __func_addr: | |
8f6277f5 | 2588 | .word func @ behave as if you saw a ARM_32 reloc. |
252b5132 | 2589 | |
26079076 PB |
2590 | (v5t static images) |
2591 | .arm | |
2592 | __func_from_arm: | |
2593 | ldr pc, __func_addr | |
2594 | __func_addr: | |
2595 | .word func @ behave as if you saw a ARM_32 reloc. | |
2596 | ||
8f6277f5 PB |
2597 | (relocatable images) |
2598 | .arm | |
2599 | __func_from_arm: | |
2600 | ldr r12, __func_offset | |
2601 | add r12, r12, pc | |
2602 | bx r12 | |
2603 | __func_offset: | |
2604 | .word func - . | |
2605 | */ | |
2606 | ||
2607 | #define ARM2THUMB_STATIC_GLUE_SIZE 12 | |
252b5132 RH |
2608 | static const insn32 a2t1_ldr_insn = 0xe59fc000; |
2609 | static const insn32 a2t2_bx_r12_insn = 0xe12fff1c; | |
2610 | static const insn32 a2t3_func_addr_insn = 0x00000001; | |
2611 | ||
26079076 PB |
2612 | #define ARM2THUMB_V5_STATIC_GLUE_SIZE 8 |
2613 | static const insn32 a2t1v5_ldr_insn = 0xe51ff004; | |
2614 | static const insn32 a2t2v5_func_addr_insn = 0x00000001; | |
2615 | ||
8f6277f5 PB |
2616 | #define ARM2THUMB_PIC_GLUE_SIZE 16 |
2617 | static const insn32 a2t1p_ldr_insn = 0xe59fc004; | |
2618 | static const insn32 a2t2p_add_pc_insn = 0xe08cc00f; | |
2619 | static const insn32 a2t3p_bx_r12_insn = 0xe12fff1c; | |
2620 | ||
9b485d32 | 2621 | /* Thumb->ARM: Thumb->(non-interworking aware) ARM |
252b5132 RH |
2622 | |
2623 | .thumb .thumb | |
2624 | .align 2 .align 2 | |
2625 | __func_from_thumb: __func_from_thumb: | |
2626 | bx pc push {r6, lr} | |
2627 | nop ldr r6, __func_addr | |
2628 | .arm mov lr, pc | |
2629 | __func_change_to_arm: bx r6 | |
2630 | b func .arm | |
2631 | __func_back_to_thumb: | |
2632 | ldmia r13! {r6, lr} | |
2633 | bx lr | |
2634 | __func_addr: | |
9b485d32 | 2635 | .word func */ |
252b5132 RH |
2636 | |
2637 | #define THUMB2ARM_GLUE_SIZE 8 | |
2638 | static const insn16 t2a1_bx_pc_insn = 0x4778; | |
2639 | static const insn16 t2a2_noop_insn = 0x46c0; | |
2640 | static const insn32 t2a3_b_insn = 0xea000000; | |
2641 | ||
c7b8f16e JB |
2642 | #define VFP11_ERRATUM_VENEER_SIZE 8 |
2643 | ||
845b51d6 PB |
2644 | #define ARM_BX_VENEER_SIZE 12 |
2645 | static const insn32 armbx1_tst_insn = 0xe3100001; | |
2646 | static const insn32 armbx2_moveq_insn = 0x01a0f000; | |
2647 | static const insn32 armbx3_bx_insn = 0xe12fff10; | |
2648 | ||
7e392df6 | 2649 | #ifndef ELFARM_NABI_C_INCLUDED |
b34976b6 | 2650 | bfd_boolean |
57e8b36a | 2651 | bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info * info) |
252b5132 RH |
2652 | { |
2653 | asection * s; | |
2654 | bfd_byte * foo; | |
2655 | struct elf32_arm_link_hash_table * globals; | |
2656 | ||
2657 | globals = elf32_arm_hash_table (info); | |
2658 | ||
2659 | BFD_ASSERT (globals != NULL); | |
2660 | ||
2661 | if (globals->arm_glue_size != 0) | |
2662 | { | |
2663 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
2664 | ||
dc810e39 AM |
2665 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, |
2666 | ARM2THUMB_GLUE_SECTION_NAME); | |
252b5132 RH |
2667 | |
2668 | BFD_ASSERT (s != NULL); | |
2669 | ||
57e8b36a | 2670 | foo = bfd_alloc (globals->bfd_of_glue_owner, globals->arm_glue_size); |
252b5132 | 2671 | |
2f475487 | 2672 | BFD_ASSERT (s->size == globals->arm_glue_size); |
252b5132 RH |
2673 | s->contents = foo; |
2674 | } | |
2675 | ||
2676 | if (globals->thumb_glue_size != 0) | |
2677 | { | |
2678 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
2679 | ||
2680 | s = bfd_get_section_by_name | |
2681 | (globals->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME); | |
2682 | ||
2683 | BFD_ASSERT (s != NULL); | |
2684 | ||
57e8b36a | 2685 | foo = bfd_alloc (globals->bfd_of_glue_owner, globals->thumb_glue_size); |
252b5132 | 2686 | |
2f475487 | 2687 | BFD_ASSERT (s->size == globals->thumb_glue_size); |
252b5132 RH |
2688 | s->contents = foo; |
2689 | } | |
c7b8f16e JB |
2690 | |
2691 | if (globals->vfp11_erratum_glue_size != 0) | |
2692 | { | |
2693 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
2694 | ||
2695 | s = bfd_get_section_by_name | |
2696 | (globals->bfd_of_glue_owner, VFP11_ERRATUM_VENEER_SECTION_NAME); | |
2697 | ||
2698 | BFD_ASSERT (s != NULL); | |
2699 | ||
2700 | foo = bfd_alloc (globals->bfd_of_glue_owner, | |
2701 | globals->vfp11_erratum_glue_size); | |
2702 | ||
2703 | BFD_ASSERT (s->size == globals->vfp11_erratum_glue_size); | |
2704 | s->contents = foo; | |
2705 | } | |
252b5132 | 2706 | |
845b51d6 PB |
2707 | if (globals->bx_glue_size != 0) |
2708 | { | |
2709 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
2710 | ||
2711 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
2712 | ARM_BX_GLUE_SECTION_NAME); | |
2713 | ||
2714 | BFD_ASSERT (s != NULL); | |
2715 | ||
2716 | foo = bfd_alloc (globals->bfd_of_glue_owner, globals->bx_glue_size); | |
2717 | ||
2718 | BFD_ASSERT (s->size == globals->bx_glue_size); | |
2719 | s->contents = foo; | |
2720 | } | |
2721 | ||
b34976b6 | 2722 | return TRUE; |
252b5132 RH |
2723 | } |
2724 | ||
a4fd1a8e PB |
2725 | /* Allocate space and symbols for calling a Thumb function from Arm mode. |
2726 | returns the symbol identifying teh stub. */ | |
2727 | static struct elf_link_hash_entry * | |
57e8b36a NC |
2728 | record_arm_to_thumb_glue (struct bfd_link_info * link_info, |
2729 | struct elf_link_hash_entry * h) | |
252b5132 RH |
2730 | { |
2731 | const char * name = h->root.root.string; | |
63b0f745 | 2732 | asection * s; |
252b5132 RH |
2733 | char * tmp_name; |
2734 | struct elf_link_hash_entry * myh; | |
14a793b2 | 2735 | struct bfd_link_hash_entry * bh; |
252b5132 | 2736 | struct elf32_arm_link_hash_table * globals; |
dc810e39 | 2737 | bfd_vma val; |
2f475487 | 2738 | bfd_size_type size; |
252b5132 RH |
2739 | |
2740 | globals = elf32_arm_hash_table (link_info); | |
2741 | ||
2742 | BFD_ASSERT (globals != NULL); | |
2743 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
2744 | ||
2745 | s = bfd_get_section_by_name | |
2746 | (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME); | |
2747 | ||
252b5132 RH |
2748 | BFD_ASSERT (s != NULL); |
2749 | ||
57e8b36a | 2750 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1); |
252b5132 RH |
2751 | |
2752 | BFD_ASSERT (tmp_name); | |
2753 | ||
2754 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); | |
2755 | ||
2756 | myh = elf_link_hash_lookup | |
b34976b6 | 2757 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 RH |
2758 | |
2759 | if (myh != NULL) | |
2760 | { | |
9b485d32 | 2761 | /* We've already seen this guy. */ |
252b5132 | 2762 | free (tmp_name); |
a4fd1a8e | 2763 | return myh; |
252b5132 RH |
2764 | } |
2765 | ||
57e8b36a NC |
2766 | /* The only trick here is using hash_table->arm_glue_size as the value. |
2767 | Even though the section isn't allocated yet, this is where we will be | |
2768 | putting it. */ | |
14a793b2 | 2769 | bh = NULL; |
dc810e39 AM |
2770 | val = globals->arm_glue_size + 1; |
2771 | _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner, | |
2772 | tmp_name, BSF_GLOBAL, s, val, | |
b34976b6 | 2773 | NULL, TRUE, FALSE, &bh); |
252b5132 | 2774 | |
b7693d02 DJ |
2775 | myh = (struct elf_link_hash_entry *) bh; |
2776 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
2777 | myh->forced_local = 1; | |
2778 | ||
252b5132 RH |
2779 | free (tmp_name); |
2780 | ||
27e55c4d PB |
2781 | if (link_info->shared || globals->root.is_relocatable_executable |
2782 | || globals->pic_veneer) | |
2f475487 | 2783 | size = ARM2THUMB_PIC_GLUE_SIZE; |
26079076 PB |
2784 | else if (globals->use_blx) |
2785 | size = ARM2THUMB_V5_STATIC_GLUE_SIZE; | |
8f6277f5 | 2786 | else |
2f475487 AM |
2787 | size = ARM2THUMB_STATIC_GLUE_SIZE; |
2788 | ||
2789 | s->size += size; | |
2790 | globals->arm_glue_size += size; | |
252b5132 | 2791 | |
a4fd1a8e | 2792 | return myh; |
252b5132 RH |
2793 | } |
2794 | ||
2795 | static void | |
57e8b36a NC |
2796 | record_thumb_to_arm_glue (struct bfd_link_info *link_info, |
2797 | struct elf_link_hash_entry *h) | |
252b5132 RH |
2798 | { |
2799 | const char *name = h->root.root.string; | |
63b0f745 | 2800 | asection *s; |
252b5132 RH |
2801 | char *tmp_name; |
2802 | struct elf_link_hash_entry *myh; | |
14a793b2 | 2803 | struct bfd_link_hash_entry *bh; |
252b5132 | 2804 | struct elf32_arm_link_hash_table *hash_table; |
dc810e39 | 2805 | bfd_vma val; |
252b5132 RH |
2806 | |
2807 | hash_table = elf32_arm_hash_table (link_info); | |
2808 | ||
2809 | BFD_ASSERT (hash_table != NULL); | |
2810 | BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL); | |
2811 | ||
2812 | s = bfd_get_section_by_name | |
2813 | (hash_table->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME); | |
2814 | ||
2815 | BFD_ASSERT (s != NULL); | |
2816 | ||
57e8b36a NC |
2817 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
2818 | + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1); | |
252b5132 RH |
2819 | |
2820 | BFD_ASSERT (tmp_name); | |
2821 | ||
2822 | sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); | |
2823 | ||
2824 | myh = elf_link_hash_lookup | |
b34976b6 | 2825 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 RH |
2826 | |
2827 | if (myh != NULL) | |
2828 | { | |
9b485d32 | 2829 | /* We've already seen this guy. */ |
252b5132 | 2830 | free (tmp_name); |
9b485d32 | 2831 | return; |
252b5132 RH |
2832 | } |
2833 | ||
14a793b2 | 2834 | bh = NULL; |
dc810e39 AM |
2835 | val = hash_table->thumb_glue_size + 1; |
2836 | _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, | |
2837 | tmp_name, BSF_GLOBAL, s, val, | |
b34976b6 | 2838 | NULL, TRUE, FALSE, &bh); |
252b5132 | 2839 | |
9b485d32 | 2840 | /* If we mark it 'Thumb', the disassembler will do a better job. */ |
14a793b2 | 2841 | myh = (struct elf_link_hash_entry *) bh; |
b7693d02 DJ |
2842 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC); |
2843 | myh->forced_local = 1; | |
252b5132 RH |
2844 | |
2845 | free (tmp_name); | |
2846 | ||
252b5132 RH |
2847 | #define CHANGE_TO_ARM "__%s_change_to_arm" |
2848 | #define BACK_FROM_ARM "__%s_back_from_arm" | |
2849 | ||
9b485d32 | 2850 | /* Allocate another symbol to mark where we switch to Arm mode. */ |
57e8b36a NC |
2851 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
2852 | + strlen (CHANGE_TO_ARM) + 1); | |
252b5132 RH |
2853 | |
2854 | BFD_ASSERT (tmp_name); | |
2855 | ||
2856 | sprintf (tmp_name, CHANGE_TO_ARM, name); | |
2857 | ||
14a793b2 | 2858 | bh = NULL; |
dc810e39 AM |
2859 | val = hash_table->thumb_glue_size + 4, |
2860 | _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, | |
2861 | tmp_name, BSF_LOCAL, s, val, | |
b34976b6 | 2862 | NULL, TRUE, FALSE, &bh); |
252b5132 RH |
2863 | |
2864 | free (tmp_name); | |
2865 | ||
2f475487 | 2866 | s->size += THUMB2ARM_GLUE_SIZE; |
252b5132 RH |
2867 | hash_table->thumb_glue_size += THUMB2ARM_GLUE_SIZE; |
2868 | ||
2869 | return; | |
2870 | } | |
2871 | ||
c7b8f16e | 2872 | |
845b51d6 PB |
2873 | /* Allocate space for ARMv4 BX veneers. */ |
2874 | ||
2875 | static void | |
2876 | record_arm_bx_glue (struct bfd_link_info * link_info, int reg) | |
2877 | { | |
2878 | asection * s; | |
2879 | struct elf32_arm_link_hash_table *globals; | |
2880 | char *tmp_name; | |
2881 | struct elf_link_hash_entry *myh; | |
2882 | struct bfd_link_hash_entry *bh; | |
2883 | bfd_vma val; | |
2884 | ||
2885 | /* BX PC does not need a veneer. */ | |
2886 | if (reg == 15) | |
2887 | return; | |
2888 | ||
2889 | globals = elf32_arm_hash_table (link_info); | |
2890 | ||
2891 | BFD_ASSERT (globals != NULL); | |
2892 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
2893 | ||
2894 | /* Check if this veneer has already been allocated. */ | |
2895 | if (globals->bx_glue_offset[reg]) | |
2896 | return; | |
2897 | ||
2898 | s = bfd_get_section_by_name | |
2899 | (globals->bfd_of_glue_owner, ARM_BX_GLUE_SECTION_NAME); | |
2900 | ||
2901 | BFD_ASSERT (s != NULL); | |
2902 | ||
2903 | /* Add symbol for veneer. */ | |
2904 | tmp_name = bfd_malloc ((bfd_size_type) strlen (ARM_BX_GLUE_ENTRY_NAME) + 1); | |
2905 | ||
2906 | BFD_ASSERT (tmp_name); | |
2907 | ||
2908 | sprintf (tmp_name, ARM_BX_GLUE_ENTRY_NAME, reg); | |
2909 | ||
2910 | myh = elf_link_hash_lookup | |
2911 | (&(globals)->root, tmp_name, FALSE, FALSE, FALSE); | |
2912 | ||
2913 | BFD_ASSERT (myh == NULL); | |
2914 | ||
2915 | bh = NULL; | |
2916 | val = globals->bx_glue_size; | |
2917 | _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner, | |
2918 | tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val, | |
2919 | NULL, TRUE, FALSE, &bh); | |
2920 | ||
2921 | myh = (struct elf_link_hash_entry *) bh; | |
2922 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
2923 | myh->forced_local = 1; | |
2924 | ||
2925 | s->size += ARM_BX_VENEER_SIZE; | |
2926 | globals->bx_glue_offset[reg] = globals->bx_glue_size | 2; | |
2927 | globals->bx_glue_size += ARM_BX_VENEER_SIZE; | |
2928 | } | |
2929 | ||
2930 | ||
c7b8f16e JB |
2931 | /* Add an entry to the code/data map for section SEC. */ |
2932 | ||
2933 | static void | |
2934 | elf32_arm_section_map_add (asection *sec, char type, bfd_vma vma) | |
2935 | { | |
2936 | struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec); | |
2937 | unsigned int newidx; | |
2938 | ||
2939 | if (sec_data->map == NULL) | |
2940 | { | |
2941 | sec_data->map = bfd_malloc (sizeof (elf32_arm_section_map)); | |
2942 | sec_data->mapcount = 0; | |
2943 | sec_data->mapsize = 1; | |
2944 | } | |
2945 | ||
2946 | newidx = sec_data->mapcount++; | |
2947 | ||
2948 | if (sec_data->mapcount > sec_data->mapsize) | |
2949 | { | |
2950 | sec_data->mapsize *= 2; | |
515ef31d NC |
2951 | sec_data->map = bfd_realloc_or_free (sec_data->map, sec_data->mapsize |
2952 | * sizeof (elf32_arm_section_map)); | |
2953 | } | |
2954 | ||
2955 | if (sec_data->map) | |
2956 | { | |
2957 | sec_data->map[newidx].vma = vma; | |
2958 | sec_data->map[newidx].type = type; | |
c7b8f16e | 2959 | } |
c7b8f16e JB |
2960 | } |
2961 | ||
2962 | ||
2963 | /* Record information about a VFP11 denorm-erratum veneer. Only ARM-mode | |
2964 | veneers are handled for now. */ | |
2965 | ||
2966 | static bfd_vma | |
2967 | record_vfp11_erratum_veneer (struct bfd_link_info *link_info, | |
2968 | elf32_vfp11_erratum_list *branch, | |
2969 | bfd *branch_bfd, | |
2970 | asection *branch_sec, | |
2971 | unsigned int offset) | |
2972 | { | |
2973 | asection *s; | |
2974 | struct elf32_arm_link_hash_table *hash_table; | |
2975 | char *tmp_name; | |
2976 | struct elf_link_hash_entry *myh; | |
2977 | struct bfd_link_hash_entry *bh; | |
2978 | bfd_vma val; | |
2979 | struct _arm_elf_section_data *sec_data; | |
2980 | int errcount; | |
2981 | elf32_vfp11_erratum_list *newerr; | |
2982 | ||
2983 | hash_table = elf32_arm_hash_table (link_info); | |
2984 | ||
2985 | BFD_ASSERT (hash_table != NULL); | |
2986 | BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL); | |
2987 | ||
2988 | s = bfd_get_section_by_name | |
2989 | (hash_table->bfd_of_glue_owner, VFP11_ERRATUM_VENEER_SECTION_NAME); | |
2990 | ||
2991 | sec_data = elf32_arm_section_data (s); | |
2992 | ||
2993 | BFD_ASSERT (s != NULL); | |
2994 | ||
2995 | tmp_name = bfd_malloc ((bfd_size_type) strlen | |
2996 | (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10); | |
2997 | ||
2998 | BFD_ASSERT (tmp_name); | |
2999 | ||
3000 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME, | |
3001 | hash_table->num_vfp11_fixes); | |
3002 | ||
3003 | myh = elf_link_hash_lookup | |
3004 | (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE); | |
3005 | ||
3006 | BFD_ASSERT (myh == NULL); | |
3007 | ||
3008 | bh = NULL; | |
3009 | val = hash_table->vfp11_erratum_glue_size; | |
3010 | _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, | |
3011 | tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val, | |
3012 | NULL, TRUE, FALSE, &bh); | |
3013 | ||
3014 | myh = (struct elf_link_hash_entry *) bh; | |
3015 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
3016 | myh->forced_local = 1; | |
3017 | ||
3018 | /* Link veneer back to calling location. */ | |
3019 | errcount = ++(sec_data->erratumcount); | |
3020 | newerr = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list)); | |
3021 | ||
3022 | newerr->type = VFP11_ERRATUM_ARM_VENEER; | |
3023 | newerr->vma = -1; | |
3024 | newerr->u.v.branch = branch; | |
3025 | newerr->u.v.id = hash_table->num_vfp11_fixes; | |
3026 | branch->u.b.veneer = newerr; | |
3027 | ||
3028 | newerr->next = sec_data->erratumlist; | |
3029 | sec_data->erratumlist = newerr; | |
3030 | ||
3031 | /* A symbol for the return from the veneer. */ | |
3032 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r", | |
3033 | hash_table->num_vfp11_fixes); | |
3034 | ||
3035 | myh = elf_link_hash_lookup | |
3036 | (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE); | |
3037 | ||
3038 | if (myh != NULL) | |
3039 | abort (); | |
3040 | ||
3041 | bh = NULL; | |
3042 | val = offset + 4; | |
3043 | _bfd_generic_link_add_one_symbol (link_info, branch_bfd, tmp_name, BSF_LOCAL, | |
3044 | branch_sec, val, NULL, TRUE, FALSE, &bh); | |
3045 | ||
3046 | myh = (struct elf_link_hash_entry *) bh; | |
3047 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
3048 | myh->forced_local = 1; | |
3049 | ||
3050 | free (tmp_name); | |
3051 | ||
3052 | /* Generate a mapping symbol for the veneer section, and explicitly add an | |
3053 | entry for that symbol to the code/data map for the section. */ | |
3054 | if (hash_table->vfp11_erratum_glue_size == 0) | |
3055 | { | |
3056 | bh = NULL; | |
3057 | /* FIXME: Creates an ARM symbol. Thumb mode will need attention if it | |
3058 | ever requires this erratum fix. */ | |
3059 | _bfd_generic_link_add_one_symbol (link_info, | |
3060 | hash_table->bfd_of_glue_owner, "$a", | |
3061 | BSF_LOCAL, s, 0, NULL, | |
3062 | TRUE, FALSE, &bh); | |
3063 | ||
3064 | myh = (struct elf_link_hash_entry *) bh; | |
3065 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
3066 | myh->forced_local = 1; | |
3067 | ||
3068 | /* The elf32_arm_init_maps function only cares about symbols from input | |
3069 | BFDs. We must make a note of this generated mapping symbol | |
3070 | ourselves so that code byteswapping works properly in | |
3071 | elf32_arm_write_section. */ | |
3072 | elf32_arm_section_map_add (s, 'a', 0); | |
3073 | } | |
3074 | ||
3075 | s->size += VFP11_ERRATUM_VENEER_SIZE; | |
3076 | hash_table->vfp11_erratum_glue_size += VFP11_ERRATUM_VENEER_SIZE; | |
3077 | hash_table->num_vfp11_fixes++; | |
3078 | ||
3079 | /* The offset of the veneer. */ | |
3080 | return val; | |
3081 | } | |
3082 | ||
8afb0e02 NC |
3083 | /* Add the glue sections to ABFD. This function is called from the |
3084 | linker scripts in ld/emultempl/{armelf}.em. */ | |
9b485d32 | 3085 | |
b34976b6 | 3086 | bfd_boolean |
57e8b36a NC |
3087 | bfd_elf32_arm_add_glue_sections_to_bfd (bfd *abfd, |
3088 | struct bfd_link_info *info) | |
252b5132 | 3089 | { |
252b5132 RH |
3090 | flagword flags; |
3091 | asection *sec; | |
3092 | ||
8afb0e02 NC |
3093 | /* If we are only performing a partial |
3094 | link do not bother adding the glue. */ | |
1049f94e | 3095 | if (info->relocatable) |
b34976b6 | 3096 | return TRUE; |
252b5132 | 3097 | |
252b5132 RH |
3098 | sec = bfd_get_section_by_name (abfd, ARM2THUMB_GLUE_SECTION_NAME); |
3099 | ||
3100 | if (sec == NULL) | |
3101 | { | |
57db232e NC |
3102 | /* Note: we do not include the flag SEC_LINKER_CREATED, as this |
3103 | will prevent elf_link_input_bfd() from processing the contents | |
3104 | of this section. */ | |
2f475487 AM |
3105 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
3106 | | SEC_CODE | SEC_READONLY); | |
252b5132 | 3107 | |
3496cb2a L |
3108 | sec = bfd_make_section_with_flags (abfd, |
3109 | ARM2THUMB_GLUE_SECTION_NAME, | |
3110 | flags); | |
252b5132 RH |
3111 | |
3112 | if (sec == NULL | |
252b5132 | 3113 | || !bfd_set_section_alignment (abfd, sec, 2)) |
b34976b6 | 3114 | return FALSE; |
9a5aca8c | 3115 | |
57db232e NC |
3116 | /* Set the gc mark to prevent the section from being removed by garbage |
3117 | collection, despite the fact that no relocs refer to this section. */ | |
3118 | sec->gc_mark = 1; | |
252b5132 RH |
3119 | } |
3120 | ||
3121 | sec = bfd_get_section_by_name (abfd, THUMB2ARM_GLUE_SECTION_NAME); | |
3122 | ||
3123 | if (sec == NULL) | |
3124 | { | |
2f475487 AM |
3125 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
3126 | | SEC_CODE | SEC_READONLY); | |
252b5132 | 3127 | |
3496cb2a L |
3128 | sec = bfd_make_section_with_flags (abfd, |
3129 | THUMB2ARM_GLUE_SECTION_NAME, | |
3130 | flags); | |
252b5132 RH |
3131 | |
3132 | if (sec == NULL | |
252b5132 | 3133 | || !bfd_set_section_alignment (abfd, sec, 2)) |
b34976b6 | 3134 | return FALSE; |
9a5aca8c | 3135 | |
57db232e | 3136 | sec->gc_mark = 1; |
252b5132 RH |
3137 | } |
3138 | ||
c7b8f16e JB |
3139 | sec = bfd_get_section_by_name (abfd, VFP11_ERRATUM_VENEER_SECTION_NAME); |
3140 | ||
3141 | if (sec == NULL) | |
3142 | { | |
3143 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3144 | | SEC_CODE | SEC_READONLY); | |
3145 | ||
3146 | sec = bfd_make_section_with_flags (abfd, | |
3147 | VFP11_ERRATUM_VENEER_SECTION_NAME, | |
3148 | flags); | |
3149 | ||
3150 | if (sec == NULL | |
3151 | || !bfd_set_section_alignment (abfd, sec, 2)) | |
3152 | return FALSE; | |
3153 | ||
3154 | sec->gc_mark = 1; | |
3155 | } | |
3156 | ||
845b51d6 PB |
3157 | sec = bfd_get_section_by_name (abfd, ARM_BX_GLUE_SECTION_NAME); |
3158 | ||
3159 | if (sec == NULL) | |
3160 | { | |
3161 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3162 | | SEC_CODE | SEC_READONLY); | |
3163 | ||
3164 | sec = bfd_make_section_with_flags (abfd, | |
3165 | ARM_BX_GLUE_SECTION_NAME, | |
3166 | flags); | |
3167 | ||
3168 | if (sec == NULL | |
3169 | || !bfd_set_section_alignment (abfd, sec, 2)) | |
3170 | return FALSE; | |
3171 | ||
3172 | sec->gc_mark = 1; | |
3173 | } | |
3174 | ||
b34976b6 | 3175 | return TRUE; |
8afb0e02 NC |
3176 | } |
3177 | ||
3178 | /* Select a BFD to be used to hold the sections used by the glue code. | |
3179 | This function is called from the linker scripts in ld/emultempl/ | |
3180 | {armelf/pe}.em */ | |
3181 | ||
b34976b6 | 3182 | bfd_boolean |
57e8b36a | 3183 | bfd_elf32_arm_get_bfd_for_interworking (bfd *abfd, struct bfd_link_info *info) |
8afb0e02 NC |
3184 | { |
3185 | struct elf32_arm_link_hash_table *globals; | |
3186 | ||
3187 | /* If we are only performing a partial link | |
3188 | do not bother getting a bfd to hold the glue. */ | |
1049f94e | 3189 | if (info->relocatable) |
b34976b6 | 3190 | return TRUE; |
8afb0e02 | 3191 | |
b7693d02 DJ |
3192 | /* Make sure we don't attach the glue sections to a dynamic object. */ |
3193 | BFD_ASSERT (!(abfd->flags & DYNAMIC)); | |
3194 | ||
8afb0e02 NC |
3195 | globals = elf32_arm_hash_table (info); |
3196 | ||
3197 | BFD_ASSERT (globals != NULL); | |
3198 | ||
3199 | if (globals->bfd_of_glue_owner != NULL) | |
b34976b6 | 3200 | return TRUE; |
8afb0e02 | 3201 | |
252b5132 RH |
3202 | /* Save the bfd for later use. */ |
3203 | globals->bfd_of_glue_owner = abfd; | |
cedb70c5 | 3204 | |
b34976b6 | 3205 | return TRUE; |
252b5132 RH |
3206 | } |
3207 | ||
39b41c9c PB |
3208 | static void check_use_blx(struct elf32_arm_link_hash_table *globals) |
3209 | { | |
104d59d1 JM |
3210 | if (bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, |
3211 | Tag_CPU_arch) > 2) | |
39b41c9c PB |
3212 | globals->use_blx = 1; |
3213 | } | |
3214 | ||
b34976b6 | 3215 | bfd_boolean |
57e8b36a | 3216 | bfd_elf32_arm_process_before_allocation (bfd *abfd, |
d504ffc8 | 3217 | struct bfd_link_info *link_info) |
252b5132 RH |
3218 | { |
3219 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 3220 | Elf_Internal_Rela *internal_relocs = NULL; |
252b5132 RH |
3221 | Elf_Internal_Rela *irel, *irelend; |
3222 | bfd_byte *contents = NULL; | |
252b5132 RH |
3223 | |
3224 | asection *sec; | |
3225 | struct elf32_arm_link_hash_table *globals; | |
3226 | ||
3227 | /* If we are only performing a partial link do not bother | |
3228 | to construct any glue. */ | |
1049f94e | 3229 | if (link_info->relocatable) |
b34976b6 | 3230 | return TRUE; |
252b5132 | 3231 | |
39ce1a6a NC |
3232 | /* Here we have a bfd that is to be included on the link. We have a |
3233 | hook to do reloc rummaging, before section sizes are nailed down. */ | |
252b5132 RH |
3234 | globals = elf32_arm_hash_table (link_info); |
3235 | ||
3236 | BFD_ASSERT (globals != NULL); | |
39ce1a6a NC |
3237 | |
3238 | check_use_blx (globals); | |
252b5132 | 3239 | |
d504ffc8 | 3240 | if (globals->byteswap_code && !bfd_big_endian (abfd)) |
e489d0ae | 3241 | { |
d003868e AM |
3242 | _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."), |
3243 | abfd); | |
e489d0ae PB |
3244 | return FALSE; |
3245 | } | |
f21f3fe0 | 3246 | |
39ce1a6a NC |
3247 | /* PR 5398: If we have not decided to include any loadable sections in |
3248 | the output then we will not have a glue owner bfd. This is OK, it | |
3249 | just means that there is nothing else for us to do here. */ | |
3250 | if (globals->bfd_of_glue_owner == NULL) | |
3251 | return TRUE; | |
3252 | ||
252b5132 RH |
3253 | /* Rummage around all the relocs and map the glue vectors. */ |
3254 | sec = abfd->sections; | |
3255 | ||
3256 | if (sec == NULL) | |
b34976b6 | 3257 | return TRUE; |
252b5132 RH |
3258 | |
3259 | for (; sec != NULL; sec = sec->next) | |
3260 | { | |
3261 | if (sec->reloc_count == 0) | |
3262 | continue; | |
3263 | ||
2f475487 AM |
3264 | if ((sec->flags & SEC_EXCLUDE) != 0) |
3265 | continue; | |
3266 | ||
0ffa91dd | 3267 | symtab_hdr = & elf_symtab_hdr (abfd); |
252b5132 | 3268 | |
9b485d32 | 3269 | /* Load the relocs. */ |
6cdc0ccc | 3270 | internal_relocs |
57e8b36a | 3271 | = _bfd_elf_link_read_relocs (abfd, sec, (void *) NULL, |
45d6a902 | 3272 | (Elf_Internal_Rela *) NULL, FALSE); |
252b5132 | 3273 | |
6cdc0ccc AM |
3274 | if (internal_relocs == NULL) |
3275 | goto error_return; | |
252b5132 | 3276 | |
6cdc0ccc AM |
3277 | irelend = internal_relocs + sec->reloc_count; |
3278 | for (irel = internal_relocs; irel < irelend; irel++) | |
252b5132 RH |
3279 | { |
3280 | long r_type; | |
3281 | unsigned long r_index; | |
252b5132 RH |
3282 | |
3283 | struct elf_link_hash_entry *h; | |
3284 | ||
3285 | r_type = ELF32_R_TYPE (irel->r_info); | |
3286 | r_index = ELF32_R_SYM (irel->r_info); | |
3287 | ||
9b485d32 | 3288 | /* These are the only relocation types we care about. */ |
ba96a88f | 3289 | if ( r_type != R_ARM_PC24 |
b7693d02 | 3290 | && r_type != R_ARM_PLT32 |
5b5bb741 PB |
3291 | && r_type != R_ARM_CALL |
3292 | && r_type != R_ARM_JUMP24 | |
bd97cb95 | 3293 | && r_type != R_ARM_THM_CALL |
845b51d6 PB |
3294 | && r_type != R_ARM_THM_JUMP24 |
3295 | && (r_type != R_ARM_V4BX || globals->fix_v4bx < 2)) | |
252b5132 RH |
3296 | continue; |
3297 | ||
3298 | /* Get the section contents if we haven't done so already. */ | |
3299 | if (contents == NULL) | |
3300 | { | |
3301 | /* Get cached copy if it exists. */ | |
3302 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
3303 | contents = elf_section_data (sec)->this_hdr.contents; | |
3304 | else | |
3305 | { | |
3306 | /* Go get them off disk. */ | |
57e8b36a | 3307 | if (! bfd_malloc_and_get_section (abfd, sec, &contents)) |
252b5132 RH |
3308 | goto error_return; |
3309 | } | |
3310 | } | |
3311 | ||
845b51d6 PB |
3312 | if (r_type == R_ARM_V4BX) |
3313 | { | |
3314 | int reg; | |
3315 | ||
3316 | reg = bfd_get_32 (abfd, contents + irel->r_offset) & 0xf; | |
3317 | record_arm_bx_glue (link_info, reg); | |
3318 | continue; | |
3319 | } | |
3320 | ||
a7c10850 | 3321 | /* If the relocation is not against a symbol it cannot concern us. */ |
252b5132 RH |
3322 | h = NULL; |
3323 | ||
9b485d32 | 3324 | /* We don't care about local symbols. */ |
252b5132 RH |
3325 | if (r_index < symtab_hdr->sh_info) |
3326 | continue; | |
3327 | ||
9b485d32 | 3328 | /* This is an external symbol. */ |
252b5132 RH |
3329 | r_index -= symtab_hdr->sh_info; |
3330 | h = (struct elf_link_hash_entry *) | |
3331 | elf_sym_hashes (abfd)[r_index]; | |
3332 | ||
3333 | /* If the relocation is against a static symbol it must be within | |
3334 | the current section and so cannot be a cross ARM/Thumb relocation. */ | |
3335 | if (h == NULL) | |
3336 | continue; | |
3337 | ||
d504ffc8 DJ |
3338 | /* If the call will go through a PLT entry then we do not need |
3339 | glue. */ | |
3340 | if (globals->splt != NULL && h->plt.offset != (bfd_vma) -1) | |
b7693d02 DJ |
3341 | continue; |
3342 | ||
252b5132 RH |
3343 | switch (r_type) |
3344 | { | |
3345 | case R_ARM_PC24: | |
c6596c5e | 3346 | case R_ARM_PLT32: |
5b5bb741 PB |
3347 | case R_ARM_CALL: |
3348 | case R_ARM_JUMP24: | |
252b5132 | 3349 | /* This one is a call from arm code. We need to look up |
2f0ca46a | 3350 | the target of the call. If it is a thumb target, we |
252b5132 | 3351 | insert glue. */ |
39b41c9c PB |
3352 | if (ELF_ST_TYPE(h->type) == STT_ARM_TFUNC |
3353 | && !(r_type == R_ARM_CALL && globals->use_blx)) | |
252b5132 RH |
3354 | record_arm_to_thumb_glue (link_info, h); |
3355 | break; | |
3356 | ||
c19d1205 | 3357 | case R_ARM_THM_CALL: |
bd97cb95 | 3358 | case R_ARM_THM_JUMP24: |
f21f3fe0 | 3359 | /* This one is a call from thumb code. We look |
2f0ca46a | 3360 | up the target of the call. If it is not a thumb |
bcbdc74c | 3361 | target, we insert glue. */ |
bd97cb95 DJ |
3362 | if (ELF_ST_TYPE (h->type) != STT_ARM_TFUNC |
3363 | && !(globals->use_blx && r_type == R_ARM_THM_CALL) | |
5ab79981 | 3364 | && h->root.type != bfd_link_hash_undefweak) |
252b5132 RH |
3365 | record_thumb_to_arm_glue (link_info, h); |
3366 | break; | |
3367 | ||
3368 | default: | |
c6596c5e | 3369 | abort (); |
252b5132 RH |
3370 | } |
3371 | } | |
6cdc0ccc AM |
3372 | |
3373 | if (contents != NULL | |
3374 | && elf_section_data (sec)->this_hdr.contents != contents) | |
3375 | free (contents); | |
3376 | contents = NULL; | |
3377 | ||
3378 | if (internal_relocs != NULL | |
3379 | && elf_section_data (sec)->relocs != internal_relocs) | |
3380 | free (internal_relocs); | |
3381 | internal_relocs = NULL; | |
252b5132 RH |
3382 | } |
3383 | ||
b34976b6 | 3384 | return TRUE; |
9a5aca8c | 3385 | |
252b5132 | 3386 | error_return: |
6cdc0ccc AM |
3387 | if (contents != NULL |
3388 | && elf_section_data (sec)->this_hdr.contents != contents) | |
3389 | free (contents); | |
3390 | if (internal_relocs != NULL | |
3391 | && elf_section_data (sec)->relocs != internal_relocs) | |
3392 | free (internal_relocs); | |
9a5aca8c | 3393 | |
b34976b6 | 3394 | return FALSE; |
252b5132 | 3395 | } |
7e392df6 | 3396 | #endif |
252b5132 | 3397 | |
eb043451 | 3398 | |
c7b8f16e JB |
3399 | /* Initialise maps of ARM/Thumb/data for input BFDs. */ |
3400 | ||
3401 | void | |
3402 | bfd_elf32_arm_init_maps (bfd *abfd) | |
3403 | { | |
3404 | Elf_Internal_Sym *isymbuf; | |
3405 | Elf_Internal_Shdr *hdr; | |
3406 | unsigned int i, localsyms; | |
3407 | ||
3408 | if ((abfd->flags & DYNAMIC) != 0) | |
3409 | return; | |
3410 | ||
0ffa91dd | 3411 | hdr = & elf_symtab_hdr (abfd); |
c7b8f16e JB |
3412 | localsyms = hdr->sh_info; |
3413 | ||
3414 | /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field | |
3415 | should contain the number of local symbols, which should come before any | |
3416 | global symbols. Mapping symbols are always local. */ | |
3417 | isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, | |
3418 | NULL); | |
3419 | ||
3420 | /* No internal symbols read? Skip this BFD. */ | |
3421 | if (isymbuf == NULL) | |
3422 | return; | |
3423 | ||
3424 | for (i = 0; i < localsyms; i++) | |
3425 | { | |
3426 | Elf_Internal_Sym *isym = &isymbuf[i]; | |
3427 | asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
3428 | const char *name; | |
3429 | ||
3430 | if (sec != NULL | |
3431 | && ELF_ST_BIND (isym->st_info) == STB_LOCAL) | |
3432 | { | |
3433 | name = bfd_elf_string_from_elf_section (abfd, | |
3434 | hdr->sh_link, isym->st_name); | |
3435 | ||
3436 | if (bfd_is_arm_special_symbol_name (name, | |
3437 | BFD_ARM_SPECIAL_SYM_TYPE_MAP)) | |
3438 | elf32_arm_section_map_add (sec, name[1], isym->st_value); | |
3439 | } | |
3440 | } | |
3441 | } | |
3442 | ||
3443 | ||
3444 | void | |
3445 | bfd_elf32_arm_set_vfp11_fix (bfd *obfd, struct bfd_link_info *link_info) | |
3446 | { | |
3447 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); | |
104d59d1 | 3448 | obj_attribute *out_attr = elf_known_obj_attributes_proc (obfd); |
c7b8f16e JB |
3449 | |
3450 | /* We assume that ARMv7+ does not need the VFP11 denorm erratum fix. */ | |
3451 | if (out_attr[Tag_CPU_arch].i >= TAG_CPU_ARCH_V7) | |
3452 | { | |
3453 | switch (globals->vfp11_fix) | |
3454 | { | |
3455 | case BFD_ARM_VFP11_FIX_DEFAULT: | |
3456 | case BFD_ARM_VFP11_FIX_NONE: | |
3457 | globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE; | |
3458 | break; | |
3459 | ||
3460 | default: | |
3461 | /* Give a warning, but do as the user requests anyway. */ | |
3462 | (*_bfd_error_handler) (_("%B: warning: selected VFP11 erratum " | |
3463 | "workaround is not necessary for target architecture"), obfd); | |
3464 | } | |
3465 | } | |
3466 | else if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_DEFAULT) | |
3467 | /* For earlier architectures, we might need the workaround, but do not | |
3468 | enable it by default. If users is running with broken hardware, they | |
3469 | must enable the erratum fix explicitly. */ | |
3470 | globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE; | |
3471 | } | |
3472 | ||
3473 | ||
3474 | enum bfd_arm_vfp11_pipe { | |
3475 | VFP11_FMAC, | |
3476 | VFP11_LS, | |
3477 | VFP11_DS, | |
3478 | VFP11_BAD | |
3479 | }; | |
3480 | ||
3481 | /* Return a VFP register number. This is encoded as RX:X for single-precision | |
3482 | registers, or X:RX for double-precision registers, where RX is the group of | |
3483 | four bits in the instruction encoding and X is the single extension bit. | |
3484 | RX and X fields are specified using their lowest (starting) bit. The return | |
3485 | value is: | |
3486 | ||
3487 | 0...31: single-precision registers s0...s31 | |
3488 | 32...63: double-precision registers d0...d31. | |
3489 | ||
3490 | Although X should be zero for VFP11 (encoding d0...d15 only), we might | |
3491 | encounter VFP3 instructions, so we allow the full range for DP registers. */ | |
3492 | ||
3493 | static unsigned int | |
3494 | bfd_arm_vfp11_regno (unsigned int insn, bfd_boolean is_double, unsigned int rx, | |
3495 | unsigned int x) | |
3496 | { | |
3497 | if (is_double) | |
3498 | return (((insn >> rx) & 0xf) | (((insn >> x) & 1) << 4)) + 32; | |
3499 | else | |
3500 | return (((insn >> rx) & 0xf) << 1) | ((insn >> x) & 1); | |
3501 | } | |
3502 | ||
3503 | /* Set bits in *WMASK according to a register number REG as encoded by | |
3504 | bfd_arm_vfp11_regno(). Ignore d16-d31. */ | |
3505 | ||
3506 | static void | |
3507 | bfd_arm_vfp11_write_mask (unsigned int *wmask, unsigned int reg) | |
3508 | { | |
3509 | if (reg < 32) | |
3510 | *wmask |= 1 << reg; | |
3511 | else if (reg < 48) | |
3512 | *wmask |= 3 << ((reg - 32) * 2); | |
3513 | } | |
3514 | ||
3515 | /* Return TRUE if WMASK overwrites anything in REGS. */ | |
3516 | ||
3517 | static bfd_boolean | |
3518 | bfd_arm_vfp11_antidependency (unsigned int wmask, int *regs, int numregs) | |
3519 | { | |
3520 | int i; | |
3521 | ||
3522 | for (i = 0; i < numregs; i++) | |
3523 | { | |
3524 | unsigned int reg = regs[i]; | |
3525 | ||
3526 | if (reg < 32 && (wmask & (1 << reg)) != 0) | |
3527 | return TRUE; | |
3528 | ||
3529 | reg -= 32; | |
3530 | ||
3531 | if (reg >= 16) | |
3532 | continue; | |
3533 | ||
3534 | if ((wmask & (3 << (reg * 2))) != 0) | |
3535 | return TRUE; | |
3536 | } | |
3537 | ||
3538 | return FALSE; | |
3539 | } | |
3540 | ||
3541 | /* In this function, we're interested in two things: finding input registers | |
3542 | for VFP data-processing instructions, and finding the set of registers which | |
3543 | arbitrary VFP instructions may write to. We use a 32-bit unsigned int to | |
3544 | hold the written set, so FLDM etc. are easy to deal with (we're only | |
3545 | interested in 32 SP registers or 16 dp registers, due to the VFP version | |
3546 | implemented by the chip in question). DP registers are marked by setting | |
3547 | both SP registers in the write mask). */ | |
3548 | ||
3549 | static enum bfd_arm_vfp11_pipe | |
3550 | bfd_arm_vfp11_insn_decode (unsigned int insn, unsigned int *destmask, int *regs, | |
3551 | int *numregs) | |
3552 | { | |
3553 | enum bfd_arm_vfp11_pipe pipe = VFP11_BAD; | |
3554 | bfd_boolean is_double = ((insn & 0xf00) == 0xb00) ? 1 : 0; | |
3555 | ||
3556 | if ((insn & 0x0f000e10) == 0x0e000a00) /* A data-processing insn. */ | |
3557 | { | |
3558 | unsigned int pqrs; | |
3559 | unsigned int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22); | |
3560 | unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5); | |
3561 | ||
3562 | pqrs = ((insn & 0x00800000) >> 20) | |
3563 | | ((insn & 0x00300000) >> 19) | |
3564 | | ((insn & 0x00000040) >> 6); | |
3565 | ||
3566 | switch (pqrs) | |
3567 | { | |
3568 | case 0: /* fmac[sd]. */ | |
3569 | case 1: /* fnmac[sd]. */ | |
3570 | case 2: /* fmsc[sd]. */ | |
3571 | case 3: /* fnmsc[sd]. */ | |
3572 | pipe = VFP11_FMAC; | |
3573 | bfd_arm_vfp11_write_mask (destmask, fd); | |
3574 | regs[0] = fd; | |
3575 | regs[1] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */ | |
3576 | regs[2] = fm; | |
3577 | *numregs = 3; | |
3578 | break; | |
3579 | ||
3580 | case 4: /* fmul[sd]. */ | |
3581 | case 5: /* fnmul[sd]. */ | |
3582 | case 6: /* fadd[sd]. */ | |
3583 | case 7: /* fsub[sd]. */ | |
3584 | pipe = VFP11_FMAC; | |
3585 | goto vfp_binop; | |
3586 | ||
3587 | case 8: /* fdiv[sd]. */ | |
3588 | pipe = VFP11_DS; | |
3589 | vfp_binop: | |
3590 | bfd_arm_vfp11_write_mask (destmask, fd); | |
3591 | regs[0] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */ | |
3592 | regs[1] = fm; | |
3593 | *numregs = 2; | |
3594 | break; | |
3595 | ||
3596 | case 15: /* extended opcode. */ | |
3597 | { | |
3598 | unsigned int extn = ((insn >> 15) & 0x1e) | |
3599 | | ((insn >> 7) & 1); | |
3600 | ||
3601 | switch (extn) | |
3602 | { | |
3603 | case 0: /* fcpy[sd]. */ | |
3604 | case 1: /* fabs[sd]. */ | |
3605 | case 2: /* fneg[sd]. */ | |
3606 | case 8: /* fcmp[sd]. */ | |
3607 | case 9: /* fcmpe[sd]. */ | |
3608 | case 10: /* fcmpz[sd]. */ | |
3609 | case 11: /* fcmpez[sd]. */ | |
3610 | case 16: /* fuito[sd]. */ | |
3611 | case 17: /* fsito[sd]. */ | |
3612 | case 24: /* ftoui[sd]. */ | |
3613 | case 25: /* ftouiz[sd]. */ | |
3614 | case 26: /* ftosi[sd]. */ | |
3615 | case 27: /* ftosiz[sd]. */ | |
3616 | /* These instructions will not bounce due to underflow. */ | |
3617 | *numregs = 0; | |
3618 | pipe = VFP11_FMAC; | |
3619 | break; | |
3620 | ||
3621 | case 3: /* fsqrt[sd]. */ | |
3622 | /* fsqrt cannot underflow, but it can (perhaps) overwrite | |
3623 | registers to cause the erratum in previous instructions. */ | |
3624 | bfd_arm_vfp11_write_mask (destmask, fd); | |
3625 | pipe = VFP11_DS; | |
3626 | break; | |
3627 | ||
3628 | case 15: /* fcvt{ds,sd}. */ | |
3629 | { | |
3630 | int rnum = 0; | |
3631 | ||
3632 | bfd_arm_vfp11_write_mask (destmask, fd); | |
3633 | ||
3634 | /* Only FCVTSD can underflow. */ | |
3635 | if ((insn & 0x100) != 0) | |
3636 | regs[rnum++] = fm; | |
3637 | ||
3638 | *numregs = rnum; | |
3639 | ||
3640 | pipe = VFP11_FMAC; | |
3641 | } | |
3642 | break; | |
3643 | ||
3644 | default: | |
3645 | return VFP11_BAD; | |
3646 | } | |
3647 | } | |
3648 | break; | |
3649 | ||
3650 | default: | |
3651 | return VFP11_BAD; | |
3652 | } | |
3653 | } | |
3654 | /* Two-register transfer. */ | |
3655 | else if ((insn & 0x0fe00ed0) == 0x0c400a10) | |
3656 | { | |
3657 | unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5); | |
3658 | ||
3659 | if ((insn & 0x100000) == 0) | |
3660 | { | |
3661 | if (is_double) | |
3662 | bfd_arm_vfp11_write_mask (destmask, fm); | |
3663 | else | |
3664 | { | |
3665 | bfd_arm_vfp11_write_mask (destmask, fm); | |
3666 | bfd_arm_vfp11_write_mask (destmask, fm + 1); | |
3667 | } | |
3668 | } | |
3669 | ||
3670 | pipe = VFP11_LS; | |
3671 | } | |
3672 | else if ((insn & 0x0e100e00) == 0x0c100a00) /* A load insn. */ | |
3673 | { | |
3674 | int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22); | |
3675 | unsigned int puw = ((insn >> 21) & 0x1) | (((insn >> 23) & 3) << 1); | |
3676 | ||
3677 | switch (puw) | |
3678 | { | |
3679 | case 0: /* Two-reg transfer. We should catch these above. */ | |
3680 | abort (); | |
3681 | ||
3682 | case 2: /* fldm[sdx]. */ | |
3683 | case 3: | |
3684 | case 5: | |
3685 | { | |
3686 | unsigned int i, offset = insn & 0xff; | |
3687 | ||
3688 | if (is_double) | |
3689 | offset >>= 1; | |
3690 | ||
3691 | for (i = fd; i < fd + offset; i++) | |
3692 | bfd_arm_vfp11_write_mask (destmask, i); | |
3693 | } | |
3694 | break; | |
3695 | ||
3696 | case 4: /* fld[sd]. */ | |
3697 | case 6: | |
3698 | bfd_arm_vfp11_write_mask (destmask, fd); | |
3699 | break; | |
3700 | ||
3701 | default: | |
3702 | return VFP11_BAD; | |
3703 | } | |
3704 | ||
3705 | pipe = VFP11_LS; | |
3706 | } | |
3707 | /* Single-register transfer. Note L==0. */ | |
3708 | else if ((insn & 0x0f100e10) == 0x0e000a10) | |
3709 | { | |
3710 | unsigned int opcode = (insn >> 21) & 7; | |
3711 | unsigned int fn = bfd_arm_vfp11_regno (insn, is_double, 16, 7); | |
3712 | ||
3713 | switch (opcode) | |
3714 | { | |
3715 | case 0: /* fmsr/fmdlr. */ | |
3716 | case 1: /* fmdhr. */ | |
3717 | /* Mark fmdhr and fmdlr as writing to the whole of the DP | |
3718 | destination register. I don't know if this is exactly right, | |
3719 | but it is the conservative choice. */ | |
3720 | bfd_arm_vfp11_write_mask (destmask, fn); | |
3721 | break; | |
3722 | ||
3723 | case 7: /* fmxr. */ | |
3724 | break; | |
3725 | } | |
3726 | ||
3727 | pipe = VFP11_LS; | |
3728 | } | |
3729 | ||
3730 | return pipe; | |
3731 | } | |
3732 | ||
3733 | ||
3734 | static int elf32_arm_compare_mapping (const void * a, const void * b); | |
3735 | ||
3736 | ||
3737 | /* Look for potentially-troublesome code sequences which might trigger the | |
3738 | VFP11 denormal/antidependency erratum. See, e.g., the ARM1136 errata sheet | |
3739 | (available from ARM) for details of the erratum. A short version is | |
3740 | described in ld.texinfo. */ | |
3741 | ||
3742 | bfd_boolean | |
3743 | bfd_elf32_arm_vfp11_erratum_scan (bfd *abfd, struct bfd_link_info *link_info) | |
3744 | { | |
3745 | asection *sec; | |
3746 | bfd_byte *contents = NULL; | |
3747 | int state = 0; | |
3748 | int regs[3], numregs = 0; | |
3749 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); | |
3750 | int use_vector = (globals->vfp11_fix == BFD_ARM_VFP11_FIX_VECTOR); | |
3751 | ||
3752 | /* We use a simple FSM to match troublesome VFP11 instruction sequences. | |
3753 | The states transition as follows: | |
3754 | ||
3755 | 0 -> 1 (vector) or 0 -> 2 (scalar) | |
3756 | A VFP FMAC-pipeline instruction has been seen. Fill | |
3757 | regs[0]..regs[numregs-1] with its input operands. Remember this | |
3758 | instruction in 'first_fmac'. | |
3759 | ||
3760 | 1 -> 2 | |
3761 | Any instruction, except for a VFP instruction which overwrites | |
3762 | regs[*]. | |
3763 | ||
3764 | 1 -> 3 [ -> 0 ] or | |
3765 | 2 -> 3 [ -> 0 ] | |
3766 | A VFP instruction has been seen which overwrites any of regs[*]. | |
3767 | We must make a veneer! Reset state to 0 before examining next | |
3768 | instruction. | |
3769 | ||
3770 | 2 -> 0 | |
3771 | If we fail to match anything in state 2, reset to state 0 and reset | |
3772 | the instruction pointer to the instruction after 'first_fmac'. | |
3773 | ||
3774 | If the VFP11 vector mode is in use, there must be at least two unrelated | |
3775 | instructions between anti-dependent VFP11 instructions to properly avoid | |
3776 | triggering the erratum, hence the use of the extra state 1. | |
3777 | */ | |
3778 | ||
3779 | /* If we are only performing a partial link do not bother | |
3780 | to construct any glue. */ | |
3781 | if (link_info->relocatable) | |
3782 | return TRUE; | |
3783 | ||
0ffa91dd NC |
3784 | /* Skip if this bfd does not correspond to an ELF image. */ |
3785 | if (! is_arm_elf (abfd)) | |
3786 | return TRUE; | |
3787 | ||
c7b8f16e JB |
3788 | /* We should have chosen a fix type by the time we get here. */ |
3789 | BFD_ASSERT (globals->vfp11_fix != BFD_ARM_VFP11_FIX_DEFAULT); | |
3790 | ||
3791 | if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_NONE) | |
3792 | return TRUE; | |
2e6030b9 | 3793 | |
c7b8f16e JB |
3794 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
3795 | { | |
3796 | unsigned int i, span, first_fmac = 0, veneer_of_insn = 0; | |
3797 | struct _arm_elf_section_data *sec_data; | |
3798 | ||
3799 | /* If we don't have executable progbits, we're not interested in this | |
3800 | section. Also skip if section is to be excluded. */ | |
3801 | if (elf_section_type (sec) != SHT_PROGBITS | |
3802 | || (elf_section_flags (sec) & SHF_EXECINSTR) == 0 | |
3803 | || (sec->flags & SEC_EXCLUDE) != 0 | |
3804 | || strcmp (sec->name, VFP11_ERRATUM_VENEER_SECTION_NAME) == 0) | |
3805 | continue; | |
3806 | ||
3807 | sec_data = elf32_arm_section_data (sec); | |
3808 | ||
3809 | if (sec_data->mapcount == 0) | |
3810 | continue; | |
3811 | ||
3812 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
3813 | contents = elf_section_data (sec)->this_hdr.contents; | |
3814 | else if (! bfd_malloc_and_get_section (abfd, sec, &contents)) | |
3815 | goto error_return; | |
3816 | ||
3817 | qsort (sec_data->map, sec_data->mapcount, sizeof (elf32_arm_section_map), | |
3818 | elf32_arm_compare_mapping); | |
3819 | ||
3820 | for (span = 0; span < sec_data->mapcount; span++) | |
3821 | { | |
3822 | unsigned int span_start = sec_data->map[span].vma; | |
3823 | unsigned int span_end = (span == sec_data->mapcount - 1) | |
3824 | ? sec->size : sec_data->map[span + 1].vma; | |
3825 | char span_type = sec_data->map[span].type; | |
3826 | ||
3827 | /* FIXME: Only ARM mode is supported at present. We may need to | |
3828 | support Thumb-2 mode also at some point. */ | |
3829 | if (span_type != 'a') | |
3830 | continue; | |
3831 | ||
3832 | for (i = span_start; i < span_end;) | |
3833 | { | |
3834 | unsigned int next_i = i + 4; | |
3835 | unsigned int insn = bfd_big_endian (abfd) | |
3836 | ? (contents[i] << 24) | |
3837 | | (contents[i + 1] << 16) | |
3838 | | (contents[i + 2] << 8) | |
3839 | | contents[i + 3] | |
3840 | : (contents[i + 3] << 24) | |
3841 | | (contents[i + 2] << 16) | |
3842 | | (contents[i + 1] << 8) | |
3843 | | contents[i]; | |
3844 | unsigned int writemask = 0; | |
3845 | enum bfd_arm_vfp11_pipe pipe; | |
3846 | ||
3847 | switch (state) | |
3848 | { | |
3849 | case 0: | |
3850 | pipe = bfd_arm_vfp11_insn_decode (insn, &writemask, regs, | |
3851 | &numregs); | |
3852 | /* I'm assuming the VFP11 erratum can trigger with denorm | |
3853 | operands on either the FMAC or the DS pipeline. This might | |
3854 | lead to slightly overenthusiastic veneer insertion. */ | |
3855 | if (pipe == VFP11_FMAC || pipe == VFP11_DS) | |
3856 | { | |
3857 | state = use_vector ? 1 : 2; | |
3858 | first_fmac = i; | |
3859 | veneer_of_insn = insn; | |
3860 | } | |
3861 | break; | |
3862 | ||
3863 | case 1: | |
3864 | { | |
3865 | int other_regs[3], other_numregs; | |
3866 | pipe = bfd_arm_vfp11_insn_decode (insn, &writemask, | |
3867 | other_regs, | |
3868 | &other_numregs); | |
3869 | if (pipe != VFP11_BAD | |
3870 | && bfd_arm_vfp11_antidependency (writemask, regs, | |
3871 | numregs)) | |
3872 | state = 3; | |
3873 | else | |
3874 | state = 2; | |
3875 | } | |
3876 | break; | |
3877 | ||
3878 | case 2: | |
3879 | { | |
3880 | int other_regs[3], other_numregs; | |
3881 | pipe = bfd_arm_vfp11_insn_decode (insn, &writemask, | |
3882 | other_regs, | |
3883 | &other_numregs); | |
3884 | if (pipe != VFP11_BAD | |
3885 | && bfd_arm_vfp11_antidependency (writemask, regs, | |
3886 | numregs)) | |
3887 | state = 3; | |
3888 | else | |
3889 | { | |
3890 | state = 0; | |
3891 | next_i = first_fmac + 4; | |
3892 | } | |
3893 | } | |
3894 | break; | |
3895 | ||
3896 | case 3: | |
3897 | abort (); /* Should be unreachable. */ | |
3898 | } | |
3899 | ||
3900 | if (state == 3) | |
3901 | { | |
3902 | elf32_vfp11_erratum_list *newerr | |
3903 | = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list)); | |
3904 | int errcount; | |
3905 | ||
3906 | errcount = ++(elf32_arm_section_data (sec)->erratumcount); | |
3907 | ||
3908 | newerr->u.b.vfp_insn = veneer_of_insn; | |
3909 | ||
3910 | switch (span_type) | |
3911 | { | |
3912 | case 'a': | |
3913 | newerr->type = VFP11_ERRATUM_BRANCH_TO_ARM_VENEER; | |
3914 | break; | |
3915 | ||
3916 | default: | |
3917 | abort (); | |
3918 | } | |
3919 | ||
3920 | record_vfp11_erratum_veneer (link_info, newerr, abfd, sec, | |
3921 | first_fmac); | |
3922 | ||
3923 | newerr->vma = -1; | |
3924 | ||
3925 | newerr->next = sec_data->erratumlist; | |
3926 | sec_data->erratumlist = newerr; | |
3927 | ||
3928 | state = 0; | |
3929 | } | |
3930 | ||
3931 | i = next_i; | |
3932 | } | |
3933 | } | |
3934 | ||
3935 | if (contents != NULL | |
3936 | && elf_section_data (sec)->this_hdr.contents != contents) | |
3937 | free (contents); | |
3938 | contents = NULL; | |
3939 | } | |
3940 | ||
3941 | return TRUE; | |
3942 | ||
3943 | error_return: | |
3944 | if (contents != NULL | |
3945 | && elf_section_data (sec)->this_hdr.contents != contents) | |
3946 | free (contents); | |
3947 | ||
3948 | return FALSE; | |
3949 | } | |
3950 | ||
3951 | /* Find virtual-memory addresses for VFP11 erratum veneers and return locations | |
3952 | after sections have been laid out, using specially-named symbols. */ | |
3953 | ||
3954 | void | |
3955 | bfd_elf32_arm_vfp11_fix_veneer_locations (bfd *abfd, | |
3956 | struct bfd_link_info *link_info) | |
3957 | { | |
3958 | asection *sec; | |
3959 | struct elf32_arm_link_hash_table *globals; | |
3960 | char *tmp_name; | |
3961 | ||
3962 | if (link_info->relocatable) | |
3963 | return; | |
2e6030b9 MS |
3964 | |
3965 | /* Skip if this bfd does not correspond to an ELF image. */ | |
0ffa91dd | 3966 | if (! is_arm_elf (abfd)) |
2e6030b9 MS |
3967 | return; |
3968 | ||
c7b8f16e JB |
3969 | globals = elf32_arm_hash_table (link_info); |
3970 | ||
3971 | tmp_name = bfd_malloc ((bfd_size_type) strlen | |
3972 | (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10); | |
3973 | ||
3974 | for (sec = abfd->sections; sec != NULL; sec = sec->next) | |
3975 | { | |
3976 | struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec); | |
3977 | elf32_vfp11_erratum_list *errnode = sec_data->erratumlist; | |
3978 | ||
3979 | for (; errnode != NULL; errnode = errnode->next) | |
3980 | { | |
3981 | struct elf_link_hash_entry *myh; | |
3982 | bfd_vma vma; | |
3983 | ||
3984 | switch (errnode->type) | |
3985 | { | |
3986 | case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER: | |
3987 | case VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER: | |
3988 | /* Find veneer symbol. */ | |
3989 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME, | |
3990 | errnode->u.b.veneer->u.v.id); | |
3991 | ||
3992 | myh = elf_link_hash_lookup | |
3993 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); | |
3994 | ||
3995 | if (myh == NULL) | |
3996 | (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer " | |
3997 | "`%s'"), abfd, tmp_name); | |
3998 | ||
3999 | vma = myh->root.u.def.section->output_section->vma | |
4000 | + myh->root.u.def.section->output_offset | |
4001 | + myh->root.u.def.value; | |
4002 | ||
4003 | errnode->u.b.veneer->vma = vma; | |
4004 | break; | |
4005 | ||
4006 | case VFP11_ERRATUM_ARM_VENEER: | |
4007 | case VFP11_ERRATUM_THUMB_VENEER: | |
4008 | /* Find return location. */ | |
4009 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r", | |
4010 | errnode->u.v.id); | |
4011 | ||
4012 | myh = elf_link_hash_lookup | |
4013 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); | |
4014 | ||
4015 | if (myh == NULL) | |
4016 | (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer " | |
4017 | "`%s'"), abfd, tmp_name); | |
4018 | ||
4019 | vma = myh->root.u.def.section->output_section->vma | |
4020 | + myh->root.u.def.section->output_offset | |
4021 | + myh->root.u.def.value; | |
4022 | ||
4023 | errnode->u.v.branch->vma = vma; | |
4024 | break; | |
4025 | ||
4026 | default: | |
4027 | abort (); | |
4028 | } | |
4029 | } | |
4030 | } | |
4031 | ||
4032 | free (tmp_name); | |
4033 | } | |
4034 | ||
4035 | ||
eb043451 PB |
4036 | /* Set target relocation values needed during linking. */ |
4037 | ||
4038 | void | |
bf21ed78 MS |
4039 | bfd_elf32_arm_set_target_relocs (struct bfd *output_bfd, |
4040 | struct bfd_link_info *link_info, | |
eb043451 | 4041 | int target1_is_rel, |
319850b4 | 4042 | char * target2_type, |
33bfe774 | 4043 | int fix_v4bx, |
c7b8f16e | 4044 | int use_blx, |
bf21ed78 | 4045 | bfd_arm_vfp11_fix vfp11_fix, |
27e55c4d | 4046 | int no_enum_warn, int pic_veneer) |
eb043451 PB |
4047 | { |
4048 | struct elf32_arm_link_hash_table *globals; | |
4049 | ||
4050 | globals = elf32_arm_hash_table (link_info); | |
4051 | ||
4052 | globals->target1_is_rel = target1_is_rel; | |
4053 | if (strcmp (target2_type, "rel") == 0) | |
4054 | globals->target2_reloc = R_ARM_REL32; | |
eeac373a PB |
4055 | else if (strcmp (target2_type, "abs") == 0) |
4056 | globals->target2_reloc = R_ARM_ABS32; | |
eb043451 PB |
4057 | else if (strcmp (target2_type, "got-rel") == 0) |
4058 | globals->target2_reloc = R_ARM_GOT_PREL; | |
4059 | else | |
4060 | { | |
4061 | _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."), | |
4062 | target2_type); | |
4063 | } | |
319850b4 | 4064 | globals->fix_v4bx = fix_v4bx; |
33bfe774 | 4065 | globals->use_blx |= use_blx; |
c7b8f16e | 4066 | globals->vfp11_fix = vfp11_fix; |
27e55c4d | 4067 | globals->pic_veneer = pic_veneer; |
bf21ed78 | 4068 | |
0ffa91dd NC |
4069 | BFD_ASSERT (is_arm_elf (output_bfd)); |
4070 | elf_arm_tdata (output_bfd)->no_enum_size_warning = no_enum_warn; | |
eb043451 | 4071 | } |
eb043451 | 4072 | |
252b5132 RH |
4073 | /* The thumb form of a long branch is a bit finicky, because the offset |
4074 | encoding is split over two fields, each in it's own instruction. They | |
f21f3fe0 | 4075 | can occur in any order. So given a thumb form of long branch, and an |
252b5132 | 4076 | offset, insert the offset into the thumb branch and return finished |
f21f3fe0 | 4077 | instruction. |
252b5132 | 4078 | |
f21f3fe0 | 4079 | It takes two thumb instructions to encode the target address. Each has |
4cc11e76 | 4080 | 11 bits to invest. The upper 11 bits are stored in one (identified by |
f21f3fe0 UD |
4081 | H-0.. see below), the lower 11 bits are stored in the other (identified |
4082 | by H-1). | |
252b5132 | 4083 | |
f21f3fe0 | 4084 | Combine together and shifted left by 1 (it's a half word address) and |
252b5132 RH |
4085 | there you have it. |
4086 | ||
4087 | Op: 1111 = F, | |
4088 | H-0, upper address-0 = 000 | |
4089 | Op: 1111 = F, | |
4090 | H-1, lower address-0 = 800 | |
4091 | ||
f21f3fe0 | 4092 | They can be ordered either way, but the arm tools I've seen always put |
252b5132 RH |
4093 | the lower one first. It probably doesn't matter. krk@cygnus.com |
4094 | ||
4095 | XXX: Actually the order does matter. The second instruction (H-1) | |
4096 | moves the computed address into the PC, so it must be the second one | |
4097 | in the sequence. The problem, however is that whilst little endian code | |
4098 | stores the instructions in HI then LOW order, big endian code does the | |
dfc5f959 | 4099 | reverse. nickc@cygnus.com. */ |
252b5132 | 4100 | |
dfc5f959 NC |
4101 | #define LOW_HI_ORDER 0xF800F000 |
4102 | #define HI_LOW_ORDER 0xF000F800 | |
252b5132 RH |
4103 | |
4104 | static insn32 | |
57e8b36a | 4105 | insert_thumb_branch (insn32 br_insn, int rel_off) |
252b5132 RH |
4106 | { |
4107 | unsigned int low_bits; | |
4108 | unsigned int high_bits; | |
4109 | ||
252b5132 RH |
4110 | BFD_ASSERT ((rel_off & 1) != 1); |
4111 | ||
dfc5f959 NC |
4112 | rel_off >>= 1; /* Half word aligned address. */ |
4113 | low_bits = rel_off & 0x000007FF; /* The bottom 11 bits. */ | |
4114 | high_bits = (rel_off >> 11) & 0x000007FF; /* The top 11 bits. */ | |
252b5132 RH |
4115 | |
4116 | if ((br_insn & LOW_HI_ORDER) == LOW_HI_ORDER) | |
4117 | br_insn = LOW_HI_ORDER | (low_bits << 16) | high_bits; | |
4118 | else if ((br_insn & HI_LOW_ORDER) == HI_LOW_ORDER) | |
4119 | br_insn = HI_LOW_ORDER | (high_bits << 16) | low_bits; | |
4120 | else | |
9b485d32 | 4121 | /* FIXME: abort is probably not the right call. krk@cygnus.com */ |
57e8b36a | 4122 | abort (); /* Error - not a valid branch instruction form. */ |
252b5132 | 4123 | |
252b5132 RH |
4124 | return br_insn; |
4125 | } | |
4126 | ||
52ab56c2 PB |
4127 | |
4128 | /* Store an Arm insn into an output section not processed by | |
4129 | elf32_arm_write_section. */ | |
4130 | ||
4131 | static void | |
4132 | put_arm_insn (struct elf32_arm_link_hash_table *htab, | |
4133 | bfd * output_bfd, bfd_vma val, void * ptr) | |
4134 | { | |
4135 | if (htab->byteswap_code != bfd_little_endian (output_bfd)) | |
4136 | bfd_putl32 (val, ptr); | |
4137 | else | |
4138 | bfd_putb32 (val, ptr); | |
4139 | } | |
4140 | ||
4141 | ||
4142 | /* Store a 16-bit Thumb insn into an output section not processed by | |
4143 | elf32_arm_write_section. */ | |
4144 | ||
4145 | static void | |
4146 | put_thumb_insn (struct elf32_arm_link_hash_table *htab, | |
4147 | bfd * output_bfd, bfd_vma val, void * ptr) | |
4148 | { | |
4149 | if (htab->byteswap_code != bfd_little_endian (output_bfd)) | |
4150 | bfd_putl16 (val, ptr); | |
4151 | else | |
4152 | bfd_putb16 (val, ptr); | |
4153 | } | |
4154 | ||
4155 | ||
9b485d32 NC |
4156 | /* Thumb code calling an ARM function. */ |
4157 | ||
252b5132 | 4158 | static int |
57e8b36a NC |
4159 | elf32_thumb_to_arm_stub (struct bfd_link_info * info, |
4160 | const char * name, | |
4161 | bfd * input_bfd, | |
4162 | bfd * output_bfd, | |
4163 | asection * input_section, | |
4164 | bfd_byte * hit_data, | |
4165 | asection * sym_sec, | |
4166 | bfd_vma offset, | |
4167 | bfd_signed_vma addend, | |
f2a9dd69 DJ |
4168 | bfd_vma val, |
4169 | char **error_message) | |
252b5132 | 4170 | { |
bcbdc74c | 4171 | asection * s = 0; |
dc810e39 | 4172 | bfd_vma my_offset; |
252b5132 RH |
4173 | unsigned long int tmp; |
4174 | long int ret_offset; | |
bcbdc74c NC |
4175 | struct elf_link_hash_entry * myh; |
4176 | struct elf32_arm_link_hash_table * globals; | |
252b5132 | 4177 | |
f2a9dd69 | 4178 | myh = find_thumb_glue (info, name, error_message); |
252b5132 | 4179 | if (myh == NULL) |
b34976b6 | 4180 | return FALSE; |
252b5132 RH |
4181 | |
4182 | globals = elf32_arm_hash_table (info); | |
4183 | ||
4184 | BFD_ASSERT (globals != NULL); | |
4185 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
4186 | ||
4187 | my_offset = myh->root.u.def.value; | |
4188 | ||
4189 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
4190 | THUMB2ARM_GLUE_SECTION_NAME); | |
4191 | ||
4192 | BFD_ASSERT (s != NULL); | |
4193 | BFD_ASSERT (s->contents != NULL); | |
4194 | BFD_ASSERT (s->output_section != NULL); | |
4195 | ||
4196 | if ((my_offset & 0x01) == 0x01) | |
4197 | { | |
4198 | if (sym_sec != NULL | |
4199 | && sym_sec->owner != NULL | |
4200 | && !INTERWORK_FLAG (sym_sec->owner)) | |
4201 | { | |
8f615d07 | 4202 | (*_bfd_error_handler) |
d003868e AM |
4203 | (_("%B(%s): warning: interworking not enabled.\n" |
4204 | " first occurrence: %B: thumb call to arm"), | |
4205 | sym_sec->owner, input_bfd, name); | |
252b5132 | 4206 | |
b34976b6 | 4207 | return FALSE; |
252b5132 RH |
4208 | } |
4209 | ||
4210 | --my_offset; | |
4211 | myh->root.u.def.value = my_offset; | |
4212 | ||
52ab56c2 PB |
4213 | put_thumb_insn (globals, output_bfd, (bfd_vma) t2a1_bx_pc_insn, |
4214 | s->contents + my_offset); | |
252b5132 | 4215 | |
52ab56c2 PB |
4216 | put_thumb_insn (globals, output_bfd, (bfd_vma) t2a2_noop_insn, |
4217 | s->contents + my_offset + 2); | |
252b5132 RH |
4218 | |
4219 | ret_offset = | |
9b485d32 NC |
4220 | /* Address of destination of the stub. */ |
4221 | ((bfd_signed_vma) val) | |
252b5132 | 4222 | - ((bfd_signed_vma) |
57e8b36a NC |
4223 | /* Offset from the start of the current section |
4224 | to the start of the stubs. */ | |
9b485d32 NC |
4225 | (s->output_offset |
4226 | /* Offset of the start of this stub from the start of the stubs. */ | |
4227 | + my_offset | |
4228 | /* Address of the start of the current section. */ | |
4229 | + s->output_section->vma) | |
4230 | /* The branch instruction is 4 bytes into the stub. */ | |
4231 | + 4 | |
4232 | /* ARM branches work from the pc of the instruction + 8. */ | |
4233 | + 8); | |
252b5132 | 4234 | |
52ab56c2 PB |
4235 | put_arm_insn (globals, output_bfd, |
4236 | (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF), | |
4237 | s->contents + my_offset + 4); | |
252b5132 RH |
4238 | } |
4239 | ||
4240 | BFD_ASSERT (my_offset <= globals->thumb_glue_size); | |
4241 | ||
427bfd90 NC |
4242 | /* Now go back and fix up the original BL insn to point to here. */ |
4243 | ret_offset = | |
4244 | /* Address of where the stub is located. */ | |
4245 | (s->output_section->vma + s->output_offset + my_offset) | |
4246 | /* Address of where the BL is located. */ | |
57e8b36a NC |
4247 | - (input_section->output_section->vma + input_section->output_offset |
4248 | + offset) | |
427bfd90 NC |
4249 | /* Addend in the relocation. */ |
4250 | - addend | |
4251 | /* Biassing for PC-relative addressing. */ | |
4252 | - 8; | |
252b5132 RH |
4253 | |
4254 | tmp = bfd_get_32 (input_bfd, hit_data | |
4255 | - input_section->vma); | |
4256 | ||
4257 | bfd_put_32 (output_bfd, | |
dc810e39 | 4258 | (bfd_vma) insert_thumb_branch (tmp, ret_offset), |
252b5132 RH |
4259 | hit_data - input_section->vma); |
4260 | ||
b34976b6 | 4261 | return TRUE; |
252b5132 RH |
4262 | } |
4263 | ||
a4fd1a8e | 4264 | /* Populate an Arm to Thumb stub. Returns the stub symbol. */ |
9b485d32 | 4265 | |
a4fd1a8e PB |
4266 | static struct elf_link_hash_entry * |
4267 | elf32_arm_create_thumb_stub (struct bfd_link_info * info, | |
4268 | const char * name, | |
4269 | bfd * input_bfd, | |
4270 | bfd * output_bfd, | |
4271 | asection * sym_sec, | |
4272 | bfd_vma val, | |
f2a9dd69 DJ |
4273 | asection *s, |
4274 | char **error_message) | |
252b5132 | 4275 | { |
dc810e39 | 4276 | bfd_vma my_offset; |
252b5132 | 4277 | long int ret_offset; |
bcbdc74c NC |
4278 | struct elf_link_hash_entry * myh; |
4279 | struct elf32_arm_link_hash_table * globals; | |
252b5132 | 4280 | |
f2a9dd69 | 4281 | myh = find_arm_glue (info, name, error_message); |
252b5132 | 4282 | if (myh == NULL) |
a4fd1a8e | 4283 | return NULL; |
252b5132 RH |
4284 | |
4285 | globals = elf32_arm_hash_table (info); | |
4286 | ||
4287 | BFD_ASSERT (globals != NULL); | |
4288 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
4289 | ||
4290 | my_offset = myh->root.u.def.value; | |
252b5132 RH |
4291 | |
4292 | if ((my_offset & 0x01) == 0x01) | |
4293 | { | |
4294 | if (sym_sec != NULL | |
4295 | && sym_sec->owner != NULL | |
4296 | && !INTERWORK_FLAG (sym_sec->owner)) | |
4297 | { | |
8f615d07 | 4298 | (*_bfd_error_handler) |
d003868e AM |
4299 | (_("%B(%s): warning: interworking not enabled.\n" |
4300 | " first occurrence: %B: arm call to thumb"), | |
4301 | sym_sec->owner, input_bfd, name); | |
252b5132 | 4302 | } |
9b485d32 | 4303 | |
252b5132 RH |
4304 | --my_offset; |
4305 | myh->root.u.def.value = my_offset; | |
4306 | ||
27e55c4d PB |
4307 | if (info->shared || globals->root.is_relocatable_executable |
4308 | || globals->pic_veneer) | |
8f6277f5 PB |
4309 | { |
4310 | /* For relocatable objects we can't use absolute addresses, | |
4311 | so construct the address from a relative offset. */ | |
4312 | /* TODO: If the offset is small it's probably worth | |
4313 | constructing the address with adds. */ | |
52ab56c2 PB |
4314 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t1p_ldr_insn, |
4315 | s->contents + my_offset); | |
4316 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t2p_add_pc_insn, | |
4317 | s->contents + my_offset + 4); | |
4318 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t3p_bx_r12_insn, | |
4319 | s->contents + my_offset + 8); | |
8f6277f5 PB |
4320 | /* Adjust the offset by 4 for the position of the add, |
4321 | and 8 for the pipeline offset. */ | |
4322 | ret_offset = (val - (s->output_offset | |
4323 | + s->output_section->vma | |
4324 | + my_offset + 12)) | |
4325 | | 1; | |
4326 | bfd_put_32 (output_bfd, ret_offset, | |
4327 | s->contents + my_offset + 12); | |
4328 | } | |
26079076 PB |
4329 | else if (globals->use_blx) |
4330 | { | |
4331 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t1v5_ldr_insn, | |
4332 | s->contents + my_offset); | |
4333 | ||
4334 | /* It's a thumb address. Add the low order bit. */ | |
4335 | bfd_put_32 (output_bfd, val | a2t2v5_func_addr_insn, | |
4336 | s->contents + my_offset + 4); | |
4337 | } | |
8f6277f5 PB |
4338 | else |
4339 | { | |
52ab56c2 PB |
4340 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t1_ldr_insn, |
4341 | s->contents + my_offset); | |
252b5132 | 4342 | |
52ab56c2 PB |
4343 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t2_bx_r12_insn, |
4344 | s->contents + my_offset + 4); | |
252b5132 | 4345 | |
8f6277f5 PB |
4346 | /* It's a thumb address. Add the low order bit. */ |
4347 | bfd_put_32 (output_bfd, val | a2t3_func_addr_insn, | |
4348 | s->contents + my_offset + 8); | |
4349 | } | |
252b5132 RH |
4350 | } |
4351 | ||
4352 | BFD_ASSERT (my_offset <= globals->arm_glue_size); | |
4353 | ||
a4fd1a8e PB |
4354 | return myh; |
4355 | } | |
4356 | ||
4357 | /* Arm code calling a Thumb function. */ | |
4358 | ||
4359 | static int | |
4360 | elf32_arm_to_thumb_stub (struct bfd_link_info * info, | |
4361 | const char * name, | |
4362 | bfd * input_bfd, | |
4363 | bfd * output_bfd, | |
4364 | asection * input_section, | |
4365 | bfd_byte * hit_data, | |
4366 | asection * sym_sec, | |
4367 | bfd_vma offset, | |
4368 | bfd_signed_vma addend, | |
f2a9dd69 DJ |
4369 | bfd_vma val, |
4370 | char **error_message) | |
a4fd1a8e PB |
4371 | { |
4372 | unsigned long int tmp; | |
4373 | bfd_vma my_offset; | |
4374 | asection * s; | |
4375 | long int ret_offset; | |
4376 | struct elf_link_hash_entry * myh; | |
4377 | struct elf32_arm_link_hash_table * globals; | |
4378 | ||
4379 | globals = elf32_arm_hash_table (info); | |
4380 | ||
4381 | BFD_ASSERT (globals != NULL); | |
4382 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
4383 | ||
4384 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
4385 | ARM2THUMB_GLUE_SECTION_NAME); | |
4386 | BFD_ASSERT (s != NULL); | |
4387 | BFD_ASSERT (s->contents != NULL); | |
4388 | BFD_ASSERT (s->output_section != NULL); | |
4389 | ||
4390 | myh = elf32_arm_create_thumb_stub (info, name, input_bfd, output_bfd, | |
f2a9dd69 | 4391 | sym_sec, val, s, error_message); |
a4fd1a8e PB |
4392 | if (!myh) |
4393 | return FALSE; | |
4394 | ||
4395 | my_offset = myh->root.u.def.value; | |
252b5132 RH |
4396 | tmp = bfd_get_32 (input_bfd, hit_data); |
4397 | tmp = tmp & 0xFF000000; | |
4398 | ||
9b485d32 | 4399 | /* Somehow these are both 4 too far, so subtract 8. */ |
dc810e39 AM |
4400 | ret_offset = (s->output_offset |
4401 | + my_offset | |
4402 | + s->output_section->vma | |
4403 | - (input_section->output_offset | |
4404 | + input_section->output_section->vma | |
4405 | + offset + addend) | |
4406 | - 8); | |
9a5aca8c | 4407 | |
252b5132 RH |
4408 | tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF); |
4409 | ||
dc810e39 | 4410 | bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma); |
252b5132 | 4411 | |
b34976b6 | 4412 | return TRUE; |
252b5132 RH |
4413 | } |
4414 | ||
a4fd1a8e PB |
4415 | /* Populate Arm stub for an exported Thumb function. */ |
4416 | ||
4417 | static bfd_boolean | |
4418 | elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry *h, void * inf) | |
4419 | { | |
4420 | struct bfd_link_info * info = (struct bfd_link_info *) inf; | |
4421 | asection * s; | |
4422 | struct elf_link_hash_entry * myh; | |
4423 | struct elf32_arm_link_hash_entry *eh; | |
4424 | struct elf32_arm_link_hash_table * globals; | |
4425 | asection *sec; | |
4426 | bfd_vma val; | |
f2a9dd69 | 4427 | char *error_message; |
a4fd1a8e PB |
4428 | |
4429 | eh = elf32_arm_hash_entry(h); | |
4430 | /* Allocate stubs for exported Thumb functions on v4t. */ | |
4431 | if (eh->export_glue == NULL) | |
4432 | return TRUE; | |
4433 | ||
4434 | globals = elf32_arm_hash_table (info); | |
4435 | ||
4436 | BFD_ASSERT (globals != NULL); | |
4437 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
4438 | ||
4439 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
4440 | ARM2THUMB_GLUE_SECTION_NAME); | |
4441 | BFD_ASSERT (s != NULL); | |
4442 | BFD_ASSERT (s->contents != NULL); | |
4443 | BFD_ASSERT (s->output_section != NULL); | |
4444 | ||
4445 | sec = eh->export_glue->root.u.def.section; | |
0eaedd0e PB |
4446 | |
4447 | BFD_ASSERT (sec->output_section != NULL); | |
4448 | ||
a4fd1a8e PB |
4449 | val = eh->export_glue->root.u.def.value + sec->output_offset |
4450 | + sec->output_section->vma; | |
4451 | myh = elf32_arm_create_thumb_stub (info, h->root.root.string, | |
4452 | h->root.u.def.section->owner, | |
f2a9dd69 DJ |
4453 | globals->obfd, sec, val, s, |
4454 | &error_message); | |
a4fd1a8e PB |
4455 | BFD_ASSERT (myh); |
4456 | return TRUE; | |
4457 | } | |
4458 | ||
845b51d6 PB |
4459 | /* Populate ARMv4 BX veneers. Returns the absolute adress of the veneer. */ |
4460 | ||
4461 | static bfd_vma | |
4462 | elf32_arm_bx_glue (struct bfd_link_info * info, int reg) | |
4463 | { | |
4464 | bfd_byte *p; | |
4465 | bfd_vma glue_addr; | |
4466 | asection *s; | |
4467 | struct elf32_arm_link_hash_table *globals; | |
4468 | ||
4469 | globals = elf32_arm_hash_table (info); | |
4470 | ||
4471 | BFD_ASSERT (globals != NULL); | |
4472 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
4473 | ||
4474 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
4475 | ARM_BX_GLUE_SECTION_NAME); | |
4476 | BFD_ASSERT (s != NULL); | |
4477 | BFD_ASSERT (s->contents != NULL); | |
4478 | BFD_ASSERT (s->output_section != NULL); | |
4479 | ||
4480 | BFD_ASSERT (globals->bx_glue_offset[reg] & 2); | |
4481 | ||
4482 | glue_addr = globals->bx_glue_offset[reg] & ~(bfd_vma)3; | |
4483 | ||
4484 | if ((globals->bx_glue_offset[reg] & 1) == 0) | |
4485 | { | |
4486 | p = s->contents + glue_addr; | |
4487 | bfd_put_32 (globals->obfd, armbx1_tst_insn + (reg << 16), p); | |
4488 | bfd_put_32 (globals->obfd, armbx2_moveq_insn + reg, p + 4); | |
4489 | bfd_put_32 (globals->obfd, armbx3_bx_insn + reg, p + 8); | |
4490 | globals->bx_glue_offset[reg] |= 1; | |
4491 | } | |
4492 | ||
4493 | return glue_addr + s->output_section->vma + s->output_offset; | |
4494 | } | |
4495 | ||
a4fd1a8e PB |
4496 | /* Generate Arm stubs for exported Thumb symbols. */ |
4497 | static void | |
4498 | elf32_arm_begin_write_processing (bfd *abfd ATTRIBUTE_UNUSED, | |
4499 | struct bfd_link_info *link_info) | |
4500 | { | |
4501 | struct elf32_arm_link_hash_table * globals; | |
4502 | ||
4503 | if (!link_info) | |
4504 | return; | |
4505 | ||
4506 | globals = elf32_arm_hash_table (link_info); | |
84c08195 PB |
4507 | /* If blx is available then exported Thumb symbols are OK and there is |
4508 | nothing to do. */ | |
a4fd1a8e PB |
4509 | if (globals->use_blx) |
4510 | return; | |
4511 | ||
4512 | elf_link_hash_traverse (&globals->root, elf32_arm_to_thumb_export_stub, | |
4513 | link_info); | |
4514 | } | |
4515 | ||
eb043451 PB |
4516 | /* Some relocations map to different relocations depending on the |
4517 | target. Return the real relocation. */ | |
4518 | static int | |
4519 | arm_real_reloc_type (struct elf32_arm_link_hash_table * globals, | |
4520 | int r_type) | |
4521 | { | |
4522 | switch (r_type) | |
4523 | { | |
4524 | case R_ARM_TARGET1: | |
4525 | if (globals->target1_is_rel) | |
4526 | return R_ARM_REL32; | |
4527 | else | |
4528 | return R_ARM_ABS32; | |
4529 | ||
4530 | case R_ARM_TARGET2: | |
4531 | return globals->target2_reloc; | |
4532 | ||
4533 | default: | |
4534 | return r_type; | |
4535 | } | |
4536 | } | |
eb043451 | 4537 | |
ba93b8ac DJ |
4538 | /* Return the base VMA address which should be subtracted from real addresses |
4539 | when resolving @dtpoff relocation. | |
4540 | This is PT_TLS segment p_vaddr. */ | |
4541 | ||
4542 | static bfd_vma | |
4543 | dtpoff_base (struct bfd_link_info *info) | |
4544 | { | |
4545 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
4546 | if (elf_hash_table (info)->tls_sec == NULL) | |
4547 | return 0; | |
4548 | return elf_hash_table (info)->tls_sec->vma; | |
4549 | } | |
4550 | ||
4551 | /* Return the relocation value for @tpoff relocation | |
4552 | if STT_TLS virtual address is ADDRESS. */ | |
4553 | ||
4554 | static bfd_vma | |
4555 | tpoff (struct bfd_link_info *info, bfd_vma address) | |
4556 | { | |
4557 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
4558 | bfd_vma base; | |
4559 | ||
4560 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
4561 | if (htab->tls_sec == NULL) | |
4562 | return 0; | |
4563 | base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power); | |
4564 | return address - htab->tls_sec->vma + base; | |
4565 | } | |
4566 | ||
00a97672 RS |
4567 | /* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA. |
4568 | VALUE is the relocation value. */ | |
4569 | ||
4570 | static bfd_reloc_status_type | |
4571 | elf32_arm_abs12_reloc (bfd *abfd, void *data, bfd_vma value) | |
4572 | { | |
4573 | if (value > 0xfff) | |
4574 | return bfd_reloc_overflow; | |
4575 | ||
4576 | value |= bfd_get_32 (abfd, data) & 0xfffff000; | |
4577 | bfd_put_32 (abfd, value, data); | |
4578 | return bfd_reloc_ok; | |
4579 | } | |
4580 | ||
4962c51a MS |
4581 | /* For a given value of n, calculate the value of G_n as required to |
4582 | deal with group relocations. We return it in the form of an | |
4583 | encoded constant-and-rotation, together with the final residual. If n is | |
4584 | specified as less than zero, then final_residual is filled with the | |
4585 | input value and no further action is performed. */ | |
4586 | ||
4587 | static bfd_vma | |
4588 | calculate_group_reloc_mask (bfd_vma value, int n, bfd_vma *final_residual) | |
4589 | { | |
4590 | int current_n; | |
4591 | bfd_vma g_n; | |
4592 | bfd_vma encoded_g_n = 0; | |
4593 | bfd_vma residual = value; /* Also known as Y_n. */ | |
4594 | ||
4595 | for (current_n = 0; current_n <= n; current_n++) | |
4596 | { | |
4597 | int shift; | |
4598 | ||
4599 | /* Calculate which part of the value to mask. */ | |
4600 | if (residual == 0) | |
4601 | shift = 0; | |
4602 | else | |
4603 | { | |
4604 | int msb; | |
4605 | ||
4606 | /* Determine the most significant bit in the residual and | |
4607 | align the resulting value to a 2-bit boundary. */ | |
4608 | for (msb = 30; msb >= 0; msb -= 2) | |
4609 | if (residual & (3 << msb)) | |
4610 | break; | |
4611 | ||
4612 | /* The desired shift is now (msb - 6), or zero, whichever | |
4613 | is the greater. */ | |
4614 | shift = msb - 6; | |
4615 | if (shift < 0) | |
4616 | shift = 0; | |
4617 | } | |
4618 | ||
4619 | /* Calculate g_n in 32-bit as well as encoded constant+rotation form. */ | |
4620 | g_n = residual & (0xff << shift); | |
4621 | encoded_g_n = (g_n >> shift) | |
4622 | | ((g_n <= 0xff ? 0 : (32 - shift) / 2) << 8); | |
4623 | ||
4624 | /* Calculate the residual for the next time around. */ | |
4625 | residual &= ~g_n; | |
4626 | } | |
4627 | ||
4628 | *final_residual = residual; | |
4629 | ||
4630 | return encoded_g_n; | |
4631 | } | |
4632 | ||
4633 | /* Given an ARM instruction, determine whether it is an ADD or a SUB. | |
4634 | Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */ | |
4635 | static int | |
4636 | identify_add_or_sub(bfd_vma insn) | |
4637 | { | |
4638 | int opcode = insn & 0x1e00000; | |
4639 | ||
4640 | if (opcode == 1 << 23) /* ADD */ | |
4641 | return 1; | |
4642 | ||
4643 | if (opcode == 1 << 22) /* SUB */ | |
4644 | return -1; | |
4645 | ||
4646 | return 0; | |
4647 | } | |
4648 | ||
e95de063 MS |
4649 | /* Determine if we're dealing with a Thumb-2 object. */ |
4650 | ||
4651 | static int using_thumb2 (struct elf32_arm_link_hash_table *globals) | |
4652 | { | |
104d59d1 JM |
4653 | int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, |
4654 | Tag_CPU_arch); | |
e95de063 MS |
4655 | return arch == TAG_CPU_ARCH_V6T2 || arch >= TAG_CPU_ARCH_V7; |
4656 | } | |
4657 | ||
252b5132 | 4658 | /* Perform a relocation as part of a final link. */ |
9b485d32 | 4659 | |
252b5132 | 4660 | static bfd_reloc_status_type |
57e8b36a NC |
4661 | elf32_arm_final_link_relocate (reloc_howto_type * howto, |
4662 | bfd * input_bfd, | |
4663 | bfd * output_bfd, | |
4664 | asection * input_section, | |
4665 | bfd_byte * contents, | |
4666 | Elf_Internal_Rela * rel, | |
4667 | bfd_vma value, | |
4668 | struct bfd_link_info * info, | |
4669 | asection * sym_sec, | |
4670 | const char * sym_name, | |
4671 | int sym_flags, | |
0945cdfd | 4672 | struct elf_link_hash_entry * h, |
f2a9dd69 DJ |
4673 | bfd_boolean * unresolved_reloc_p, |
4674 | char **error_message) | |
252b5132 RH |
4675 | { |
4676 | unsigned long r_type = howto->type; | |
4677 | unsigned long r_symndx; | |
4678 | bfd_byte * hit_data = contents + rel->r_offset; | |
4679 | bfd * dynobj = NULL; | |
4680 | Elf_Internal_Shdr * symtab_hdr; | |
4681 | struct elf_link_hash_entry ** sym_hashes; | |
4682 | bfd_vma * local_got_offsets; | |
4683 | asection * sgot = NULL; | |
4684 | asection * splt = NULL; | |
4685 | asection * sreloc = NULL; | |
252b5132 | 4686 | bfd_vma addend; |
ba96a88f NC |
4687 | bfd_signed_vma signed_addend; |
4688 | struct elf32_arm_link_hash_table * globals; | |
f21f3fe0 | 4689 | |
9c504268 PB |
4690 | globals = elf32_arm_hash_table (info); |
4691 | ||
0ffa91dd NC |
4692 | BFD_ASSERT (is_arm_elf (input_bfd)); |
4693 | ||
4694 | /* Some relocation types map to different relocations depending on the | |
9c504268 | 4695 | target. We pick the right one here. */ |
eb043451 PB |
4696 | r_type = arm_real_reloc_type (globals, r_type); |
4697 | if (r_type != howto->type) | |
4698 | howto = elf32_arm_howto_from_type (r_type); | |
9c504268 | 4699 | |
cac15327 NC |
4700 | /* If the start address has been set, then set the EF_ARM_HASENTRY |
4701 | flag. Setting this more than once is redundant, but the cost is | |
4702 | not too high, and it keeps the code simple. | |
99e4ae17 | 4703 | |
cac15327 NC |
4704 | The test is done here, rather than somewhere else, because the |
4705 | start address is only set just before the final link commences. | |
4706 | ||
4707 | Note - if the user deliberately sets a start address of 0, the | |
4708 | flag will not be set. */ | |
4709 | if (bfd_get_start_address (output_bfd) != 0) | |
4710 | elf_elfheader (output_bfd)->e_flags |= EF_ARM_HASENTRY; | |
99e4ae17 | 4711 | |
252b5132 RH |
4712 | dynobj = elf_hash_table (info)->dynobj; |
4713 | if (dynobj) | |
4714 | { | |
4715 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
4716 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
4717 | } | |
0ffa91dd | 4718 | symtab_hdr = & elf_symtab_hdr (input_bfd); |
252b5132 RH |
4719 | sym_hashes = elf_sym_hashes (input_bfd); |
4720 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
4721 | r_symndx = ELF32_R_SYM (rel->r_info); | |
4722 | ||
4e7fd91e | 4723 | if (globals->use_rel) |
ba96a88f | 4724 | { |
4e7fd91e PB |
4725 | addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask; |
4726 | ||
4727 | if (addend & ((howto->src_mask + 1) >> 1)) | |
4728 | { | |
4729 | signed_addend = -1; | |
4730 | signed_addend &= ~ howto->src_mask; | |
4731 | signed_addend |= addend; | |
4732 | } | |
4733 | else | |
4734 | signed_addend = addend; | |
ba96a88f NC |
4735 | } |
4736 | else | |
4e7fd91e | 4737 | addend = signed_addend = rel->r_addend; |
f21f3fe0 | 4738 | |
252b5132 RH |
4739 | switch (r_type) |
4740 | { | |
4741 | case R_ARM_NONE: | |
28a094c2 DJ |
4742 | /* We don't need to find a value for this symbol. It's just a |
4743 | marker. */ | |
4744 | *unresolved_reloc_p = FALSE; | |
252b5132 RH |
4745 | return bfd_reloc_ok; |
4746 | ||
00a97672 RS |
4747 | case R_ARM_ABS12: |
4748 | if (!globals->vxworks_p) | |
4749 | return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend); | |
4750 | ||
252b5132 RH |
4751 | case R_ARM_PC24: |
4752 | case R_ARM_ABS32: | |
bb224fc3 | 4753 | case R_ARM_ABS32_NOI: |
252b5132 | 4754 | case R_ARM_REL32: |
bb224fc3 | 4755 | case R_ARM_REL32_NOI: |
5b5bb741 PB |
4756 | case R_ARM_CALL: |
4757 | case R_ARM_JUMP24: | |
dfc5f959 | 4758 | case R_ARM_XPC25: |
eb043451 | 4759 | case R_ARM_PREL31: |
7359ea65 | 4760 | case R_ARM_PLT32: |
7359ea65 DJ |
4761 | /* Handle relocations which should use the PLT entry. ABS32/REL32 |
4762 | will use the symbol's value, which may point to a PLT entry, but we | |
4763 | don't need to handle that here. If we created a PLT entry, all | |
4764 | branches in this object should go to it. */ | |
bb224fc3 MS |
4765 | if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32 |
4766 | && r_type != R_ARM_ABS32_NOI && r_type != R_ARM_REL32_NOI) | |
7359ea65 | 4767 | && h != NULL |
c84cd8ee | 4768 | && splt != NULL |
7359ea65 DJ |
4769 | && h->plt.offset != (bfd_vma) -1) |
4770 | { | |
c84cd8ee DJ |
4771 | /* If we've created a .plt section, and assigned a PLT entry to |
4772 | this function, it should not be known to bind locally. If | |
4773 | it were, we would have cleared the PLT entry. */ | |
7359ea65 DJ |
4774 | BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info, h)); |
4775 | ||
4776 | value = (splt->output_section->vma | |
4777 | + splt->output_offset | |
4778 | + h->plt.offset); | |
0945cdfd | 4779 | *unresolved_reloc_p = FALSE; |
7359ea65 DJ |
4780 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
4781 | contents, rel->r_offset, value, | |
00a97672 | 4782 | rel->r_addend); |
7359ea65 DJ |
4783 | } |
4784 | ||
67687978 PB |
4785 | /* When generating a shared object or relocatable executable, these |
4786 | relocations are copied into the output file to be resolved at | |
4787 | run time. */ | |
4788 | if ((info->shared || globals->root.is_relocatable_executable) | |
7359ea65 | 4789 | && (input_section->flags & SEC_ALLOC) |
bb224fc3 | 4790 | && ((r_type != R_ARM_REL32 && r_type != R_ARM_REL32_NOI) |
ee06dc07 | 4791 | || !SYMBOL_CALLS_LOCAL (info, h)) |
7359ea65 DJ |
4792 | && (h == NULL |
4793 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
4794 | || h->root.type != bfd_link_hash_undefweak) | |
4795 | && r_type != R_ARM_PC24 | |
5b5bb741 PB |
4796 | && r_type != R_ARM_CALL |
4797 | && r_type != R_ARM_JUMP24 | |
ee06dc07 | 4798 | && r_type != R_ARM_PREL31 |
7359ea65 | 4799 | && r_type != R_ARM_PLT32) |
252b5132 | 4800 | { |
947216bf AM |
4801 | Elf_Internal_Rela outrel; |
4802 | bfd_byte *loc; | |
b34976b6 | 4803 | bfd_boolean skip, relocate; |
f21f3fe0 | 4804 | |
0945cdfd DJ |
4805 | *unresolved_reloc_p = FALSE; |
4806 | ||
252b5132 RH |
4807 | if (sreloc == NULL) |
4808 | { | |
4809 | const char * name; | |
f21f3fe0 | 4810 | |
252b5132 RH |
4811 | name = (bfd_elf_string_from_elf_section |
4812 | (input_bfd, | |
4813 | elf_elfheader (input_bfd)->e_shstrndx, | |
4814 | elf_section_data (input_section)->rel_hdr.sh_name)); | |
4815 | if (name == NULL) | |
4816 | return bfd_reloc_notsupported; | |
f21f3fe0 | 4817 | |
00a97672 | 4818 | BFD_ASSERT (reloc_section_p (globals, name, input_section)); |
f21f3fe0 | 4819 | |
252b5132 RH |
4820 | sreloc = bfd_get_section_by_name (dynobj, name); |
4821 | BFD_ASSERT (sreloc != NULL); | |
4822 | } | |
f21f3fe0 | 4823 | |
b34976b6 AM |
4824 | skip = FALSE; |
4825 | relocate = FALSE; | |
f21f3fe0 | 4826 | |
00a97672 | 4827 | outrel.r_addend = addend; |
c629eae0 JJ |
4828 | outrel.r_offset = |
4829 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
4830 | rel->r_offset); | |
4831 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 4832 | skip = TRUE; |
0bb2d96a | 4833 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 4834 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
4835 | outrel.r_offset += (input_section->output_section->vma |
4836 | + input_section->output_offset); | |
f21f3fe0 | 4837 | |
252b5132 | 4838 | if (skip) |
0bb2d96a | 4839 | memset (&outrel, 0, sizeof outrel); |
5e681ec4 PB |
4840 | else if (h != NULL |
4841 | && h->dynindx != -1 | |
7359ea65 | 4842 | && (!info->shared |
5e681ec4 | 4843 | || !info->symbolic |
f5385ebf | 4844 | || !h->def_regular)) |
5e681ec4 | 4845 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
252b5132 RH |
4846 | else |
4847 | { | |
a16385dc MM |
4848 | int symbol; |
4849 | ||
5e681ec4 | 4850 | /* This symbol is local, or marked to become local. */ |
b7693d02 DJ |
4851 | if (sym_flags == STT_ARM_TFUNC) |
4852 | value |= 1; | |
a16385dc | 4853 | if (globals->symbian_p) |
6366ff1e | 4854 | { |
74541ad4 AM |
4855 | asection *osec; |
4856 | ||
6366ff1e MM |
4857 | /* On Symbian OS, the data segment and text segement |
4858 | can be relocated independently. Therefore, we | |
4859 | must indicate the segment to which this | |
4860 | relocation is relative. The BPABI allows us to | |
4861 | use any symbol in the right segment; we just use | |
4862 | the section symbol as it is convenient. (We | |
4863 | cannot use the symbol given by "h" directly as it | |
74541ad4 AM |
4864 | will not appear in the dynamic symbol table.) |
4865 | ||
4866 | Note that the dynamic linker ignores the section | |
4867 | symbol value, so we don't subtract osec->vma | |
4868 | from the emitted reloc addend. */ | |
10dbd1f3 | 4869 | if (sym_sec) |
74541ad4 | 4870 | osec = sym_sec->output_section; |
10dbd1f3 | 4871 | else |
74541ad4 AM |
4872 | osec = input_section->output_section; |
4873 | symbol = elf_section_data (osec)->dynindx; | |
4874 | if (symbol == 0) | |
4875 | { | |
4876 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
4877 | ||
4878 | if ((osec->flags & SEC_READONLY) == 0 | |
4879 | && htab->data_index_section != NULL) | |
4880 | osec = htab->data_index_section; | |
4881 | else | |
4882 | osec = htab->text_index_section; | |
4883 | symbol = elf_section_data (osec)->dynindx; | |
4884 | } | |
6366ff1e MM |
4885 | BFD_ASSERT (symbol != 0); |
4886 | } | |
a16385dc MM |
4887 | else |
4888 | /* On SVR4-ish systems, the dynamic loader cannot | |
4889 | relocate the text and data segments independently, | |
4890 | so the symbol does not matter. */ | |
4891 | symbol = 0; | |
4892 | outrel.r_info = ELF32_R_INFO (symbol, R_ARM_RELATIVE); | |
00a97672 RS |
4893 | if (globals->use_rel) |
4894 | relocate = TRUE; | |
4895 | else | |
4896 | outrel.r_addend += value; | |
252b5132 | 4897 | } |
f21f3fe0 | 4898 | |
947216bf | 4899 | loc = sreloc->contents; |
00a97672 RS |
4900 | loc += sreloc->reloc_count++ * RELOC_SIZE (globals); |
4901 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
9a5aca8c | 4902 | |
f21f3fe0 | 4903 | /* If this reloc is against an external symbol, we do not want to |
252b5132 | 4904 | fiddle with the addend. Otherwise, we need to include the symbol |
9b485d32 | 4905 | value so that it becomes an addend for the dynamic reloc. */ |
252b5132 RH |
4906 | if (! relocate) |
4907 | return bfd_reloc_ok; | |
9a5aca8c | 4908 | |
f21f3fe0 | 4909 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
252b5132 RH |
4910 | contents, rel->r_offset, value, |
4911 | (bfd_vma) 0); | |
4912 | } | |
4913 | else switch (r_type) | |
4914 | { | |
00a97672 RS |
4915 | case R_ARM_ABS12: |
4916 | return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend); | |
4917 | ||
dfc5f959 | 4918 | case R_ARM_XPC25: /* Arm BLX instruction. */ |
5b5bb741 PB |
4919 | case R_ARM_CALL: |
4920 | case R_ARM_JUMP24: | |
dfc5f959 | 4921 | case R_ARM_PC24: /* Arm B/BL instruction */ |
7359ea65 | 4922 | case R_ARM_PLT32: |
dfc5f959 | 4923 | if (r_type == R_ARM_XPC25) |
252b5132 | 4924 | { |
dfc5f959 NC |
4925 | /* Check for Arm calling Arm function. */ |
4926 | /* FIXME: Should we translate the instruction into a BL | |
4927 | instruction instead ? */ | |
4928 | if (sym_flags != STT_ARM_TFUNC) | |
d003868e AM |
4929 | (*_bfd_error_handler) |
4930 | (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."), | |
4931 | input_bfd, | |
4932 | h ? h->root.root.string : "(local)"); | |
dfc5f959 | 4933 | } |
39b41c9c | 4934 | else if (r_type != R_ARM_CALL || !globals->use_blx) |
dfc5f959 NC |
4935 | { |
4936 | /* Check for Arm calling Thumb function. */ | |
4937 | if (sym_flags == STT_ARM_TFUNC) | |
4938 | { | |
f2a9dd69 DJ |
4939 | if (elf32_arm_to_thumb_stub (info, sym_name, input_bfd, |
4940 | output_bfd, input_section, | |
4941 | hit_data, sym_sec, rel->r_offset, | |
4942 | signed_addend, value, | |
4943 | error_message)) | |
4944 | return bfd_reloc_ok; | |
4945 | else | |
4946 | return bfd_reloc_dangerous; | |
dfc5f959 | 4947 | } |
252b5132 | 4948 | } |
ba96a88f | 4949 | |
dea514f5 PB |
4950 | /* The ARM ELF ABI says that this reloc is computed as: S - P + A |
4951 | where: | |
4952 | S is the address of the symbol in the relocation. | |
4953 | P is address of the instruction being relocated. | |
4954 | A is the addend (extracted from the instruction) in bytes. | |
4955 | ||
4956 | S is held in 'value'. | |
4957 | P is the base address of the section containing the | |
4958 | instruction plus the offset of the reloc into that | |
4959 | section, ie: | |
4960 | (input_section->output_section->vma + | |
4961 | input_section->output_offset + | |
4962 | rel->r_offset). | |
4963 | A is the addend, converted into bytes, ie: | |
4964 | (signed_addend * 4) | |
4965 | ||
4966 | Note: None of these operations have knowledge of the pipeline | |
4967 | size of the processor, thus it is up to the assembler to | |
4968 | encode this information into the addend. */ | |
4969 | value -= (input_section->output_section->vma | |
4970 | + input_section->output_offset); | |
4971 | value -= rel->r_offset; | |
4e7fd91e PB |
4972 | if (globals->use_rel) |
4973 | value += (signed_addend << howto->size); | |
4974 | else | |
4975 | /* RELA addends do not have to be adjusted by howto->size. */ | |
4976 | value += signed_addend; | |
23080146 | 4977 | |
dcb5e6e6 NC |
4978 | signed_addend = value; |
4979 | signed_addend >>= howto->rightshift; | |
9a5aca8c | 4980 | |
5ab79981 PB |
4981 | /* A branch to an undefined weak symbol is turned into a jump to |
4982 | the next instruction. */ | |
4983 | if (h && h->root.type == bfd_link_hash_undefweak) | |
4984 | { | |
4985 | value = (bfd_get_32 (input_bfd, hit_data) & 0xf0000000) | |
4986 | | 0x0affffff; | |
4987 | } | |
4988 | else | |
59f2c4e7 | 4989 | { |
9b485d32 | 4990 | /* Perform a signed range check. */ |
dcb5e6e6 | 4991 | if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1)) |
59f2c4e7 NC |
4992 | || signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1))) |
4993 | return bfd_reloc_overflow; | |
9a5aca8c | 4994 | |
5ab79981 | 4995 | addend = (value & 2); |
39b41c9c | 4996 | |
5ab79981 PB |
4997 | value = (signed_addend & howto->dst_mask) |
4998 | | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask)); | |
39b41c9c | 4999 | |
5ab79981 | 5000 | /* Set the H bit in the BLX instruction. */ |
39b41c9c | 5001 | if (sym_flags == STT_ARM_TFUNC) |
39b41c9c | 5002 | { |
5ab79981 PB |
5003 | if (addend) |
5004 | value |= (1 << 24); | |
5005 | else | |
5006 | value &= ~(bfd_vma)(1 << 24); | |
5007 | } | |
5008 | if (r_type == R_ARM_CALL) | |
5009 | { | |
5010 | /* Select the correct instruction (BL or BLX). */ | |
5011 | if (sym_flags == STT_ARM_TFUNC) | |
5012 | value |= (1 << 28); | |
5013 | else | |
5014 | { | |
5015 | value &= ~(bfd_vma)(1 << 28); | |
5016 | value |= (1 << 24); | |
5017 | } | |
39b41c9c PB |
5018 | } |
5019 | } | |
252b5132 | 5020 | break; |
f21f3fe0 | 5021 | |
252b5132 RH |
5022 | case R_ARM_ABS32: |
5023 | value += addend; | |
5024 | if (sym_flags == STT_ARM_TFUNC) | |
5025 | value |= 1; | |
5026 | break; | |
f21f3fe0 | 5027 | |
bb224fc3 MS |
5028 | case R_ARM_ABS32_NOI: |
5029 | value += addend; | |
5030 | break; | |
5031 | ||
252b5132 | 5032 | case R_ARM_REL32: |
a8bc6c78 PB |
5033 | value += addend; |
5034 | if (sym_flags == STT_ARM_TFUNC) | |
5035 | value |= 1; | |
252b5132 | 5036 | value -= (input_section->output_section->vma |
62efb346 | 5037 | + input_section->output_offset + rel->r_offset); |
252b5132 | 5038 | break; |
eb043451 | 5039 | |
bb224fc3 MS |
5040 | case R_ARM_REL32_NOI: |
5041 | value += addend; | |
5042 | value -= (input_section->output_section->vma | |
5043 | + input_section->output_offset + rel->r_offset); | |
5044 | break; | |
5045 | ||
eb043451 PB |
5046 | case R_ARM_PREL31: |
5047 | value -= (input_section->output_section->vma | |
5048 | + input_section->output_offset + rel->r_offset); | |
5049 | value += signed_addend; | |
5050 | if (! h || h->root.type != bfd_link_hash_undefweak) | |
5051 | { | |
5052 | /* Check for overflow */ | |
5053 | if ((value ^ (value >> 1)) & (1 << 30)) | |
5054 | return bfd_reloc_overflow; | |
5055 | } | |
5056 | value &= 0x7fffffff; | |
5057 | value |= (bfd_get_32 (input_bfd, hit_data) & 0x80000000); | |
5058 | if (sym_flags == STT_ARM_TFUNC) | |
5059 | value |= 1; | |
5060 | break; | |
252b5132 | 5061 | } |
f21f3fe0 | 5062 | |
252b5132 RH |
5063 | bfd_put_32 (input_bfd, value, hit_data); |
5064 | return bfd_reloc_ok; | |
5065 | ||
5066 | case R_ARM_ABS8: | |
5067 | value += addend; | |
5068 | if ((long) value > 0x7f || (long) value < -0x80) | |
5069 | return bfd_reloc_overflow; | |
5070 | ||
5071 | bfd_put_8 (input_bfd, value, hit_data); | |
5072 | return bfd_reloc_ok; | |
5073 | ||
5074 | case R_ARM_ABS16: | |
5075 | value += addend; | |
5076 | ||
5077 | if ((long) value > 0x7fff || (long) value < -0x8000) | |
5078 | return bfd_reloc_overflow; | |
5079 | ||
5080 | bfd_put_16 (input_bfd, value, hit_data); | |
5081 | return bfd_reloc_ok; | |
5082 | ||
252b5132 | 5083 | case R_ARM_THM_ABS5: |
9b485d32 | 5084 | /* Support ldr and str instructions for the thumb. */ |
4e7fd91e PB |
5085 | if (globals->use_rel) |
5086 | { | |
5087 | /* Need to refetch addend. */ | |
5088 | addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask; | |
5089 | /* ??? Need to determine shift amount from operand size. */ | |
5090 | addend >>= howto->rightshift; | |
5091 | } | |
252b5132 RH |
5092 | value += addend; |
5093 | ||
5094 | /* ??? Isn't value unsigned? */ | |
5095 | if ((long) value > 0x1f || (long) value < -0x10) | |
5096 | return bfd_reloc_overflow; | |
5097 | ||
5098 | /* ??? Value needs to be properly shifted into place first. */ | |
5099 | value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f; | |
5100 | bfd_put_16 (input_bfd, value, hit_data); | |
5101 | return bfd_reloc_ok; | |
5102 | ||
2cab6cc3 MS |
5103 | case R_ARM_THM_ALU_PREL_11_0: |
5104 | /* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */ | |
5105 | { | |
5106 | bfd_vma insn; | |
5107 | bfd_signed_vma relocation; | |
5108 | ||
5109 | insn = (bfd_get_16 (input_bfd, hit_data) << 16) | |
5110 | | bfd_get_16 (input_bfd, hit_data + 2); | |
5111 | ||
5112 | if (globals->use_rel) | |
5113 | { | |
5114 | signed_addend = (insn & 0xff) | ((insn & 0x7000) >> 4) | |
5115 | | ((insn & (1 << 26)) >> 15); | |
5116 | if (insn & 0xf00000) | |
5117 | signed_addend = -signed_addend; | |
5118 | } | |
5119 | ||
5120 | relocation = value + signed_addend; | |
5121 | relocation -= (input_section->output_section->vma | |
5122 | + input_section->output_offset | |
5123 | + rel->r_offset); | |
5124 | ||
5125 | value = abs (relocation); | |
5126 | ||
5127 | if (value >= 0x1000) | |
5128 | return bfd_reloc_overflow; | |
5129 | ||
5130 | insn = (insn & 0xfb0f8f00) | (value & 0xff) | |
5131 | | ((value & 0x700) << 4) | |
5132 | | ((value & 0x800) << 15); | |
5133 | if (relocation < 0) | |
5134 | insn |= 0xa00000; | |
5135 | ||
5136 | bfd_put_16 (input_bfd, insn >> 16, hit_data); | |
5137 | bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2); | |
5138 | ||
5139 | return bfd_reloc_ok; | |
5140 | } | |
5141 | ||
5142 | case R_ARM_THM_PC12: | |
5143 | /* Corresponds to: ldr.w reg, [pc, #offset]. */ | |
5144 | { | |
5145 | bfd_vma insn; | |
5146 | bfd_signed_vma relocation; | |
5147 | ||
5148 | insn = (bfd_get_16 (input_bfd, hit_data) << 16) | |
5149 | | bfd_get_16 (input_bfd, hit_data + 2); | |
5150 | ||
5151 | if (globals->use_rel) | |
5152 | { | |
5153 | signed_addend = insn & 0xfff; | |
5154 | if (!(insn & (1 << 23))) | |
5155 | signed_addend = -signed_addend; | |
5156 | } | |
5157 | ||
5158 | relocation = value + signed_addend; | |
5159 | relocation -= (input_section->output_section->vma | |
5160 | + input_section->output_offset | |
5161 | + rel->r_offset); | |
5162 | ||
5163 | value = abs (relocation); | |
5164 | ||
5165 | if (value >= 0x1000) | |
5166 | return bfd_reloc_overflow; | |
5167 | ||
5168 | insn = (insn & 0xff7ff000) | value; | |
5169 | if (relocation >= 0) | |
5170 | insn |= (1 << 23); | |
5171 | ||
5172 | bfd_put_16 (input_bfd, insn >> 16, hit_data); | |
5173 | bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2); | |
5174 | ||
5175 | return bfd_reloc_ok; | |
5176 | } | |
5177 | ||
dfc5f959 | 5178 | case R_ARM_THM_XPC22: |
c19d1205 | 5179 | case R_ARM_THM_CALL: |
bd97cb95 | 5180 | case R_ARM_THM_JUMP24: |
dfc5f959 | 5181 | /* Thumb BL (branch long instruction). */ |
252b5132 | 5182 | { |
b34976b6 | 5183 | bfd_vma relocation; |
e95de063 | 5184 | bfd_vma reloc_sign; |
b34976b6 AM |
5185 | bfd_boolean overflow = FALSE; |
5186 | bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); | |
5187 | bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); | |
e95de063 MS |
5188 | bfd_signed_vma reloc_signed_max; |
5189 | bfd_signed_vma reloc_signed_min; | |
b34976b6 | 5190 | bfd_vma check; |
252b5132 | 5191 | bfd_signed_vma signed_check; |
e95de063 MS |
5192 | int bitsize; |
5193 | int thumb2 = using_thumb2 (globals); | |
252b5132 | 5194 | |
5ab79981 PB |
5195 | /* A branch to an undefined weak symbol is turned into a jump to |
5196 | the next instruction. */ | |
5197 | if (h && h->root.type == bfd_link_hash_undefweak) | |
5198 | { | |
5199 | bfd_put_16 (input_bfd, 0xe000, hit_data); | |
5200 | bfd_put_16 (input_bfd, 0xbf00, hit_data + 2); | |
5201 | return bfd_reloc_ok; | |
5202 | } | |
5203 | ||
e95de063 MS |
5204 | /* Fetch the addend. We use the Thumb-2 encoding (backwards compatible |
5205 | with Thumb-1) involving the J1 and J2 bits. */ | |
4e7fd91e PB |
5206 | if (globals->use_rel) |
5207 | { | |
e95de063 MS |
5208 | bfd_vma s = (upper_insn & (1 << 10)) >> 10; |
5209 | bfd_vma upper = upper_insn & 0x3ff; | |
5210 | bfd_vma lower = lower_insn & 0x7ff; | |
5211 | bfd_vma j1 = (lower_insn & (1 << 13)) >> 13; | |
5212 | bfd_vma j2 = (lower_insn & (1 << 11)) >> 11; | |
5213 | bfd_vma i1 = j1 ^ s ? 0 : 1; | |
5214 | bfd_vma i2 = j2 ^ s ? 0 : 1; | |
5215 | ||
5216 | addend = (i1 << 23) | (i2 << 22) | (upper << 12) | (lower << 1); | |
5217 | /* Sign extend. */ | |
5218 | addend = (addend | ((s ? 0 : 1) << 24)) - (1 << 24); | |
5219 | ||
4e7fd91e PB |
5220 | signed_addend = addend; |
5221 | } | |
cb1afa5c | 5222 | |
dfc5f959 NC |
5223 | if (r_type == R_ARM_THM_XPC22) |
5224 | { | |
5225 | /* Check for Thumb to Thumb call. */ | |
5226 | /* FIXME: Should we translate the instruction into a BL | |
5227 | instruction instead ? */ | |
5228 | if (sym_flags == STT_ARM_TFUNC) | |
d003868e AM |
5229 | (*_bfd_error_handler) |
5230 | (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."), | |
5231 | input_bfd, | |
5232 | h ? h->root.root.string : "(local)"); | |
dfc5f959 NC |
5233 | } |
5234 | else | |
252b5132 | 5235 | { |
dfc5f959 NC |
5236 | /* If it is not a call to Thumb, assume call to Arm. |
5237 | If it is a call relative to a section name, then it is not a | |
b7693d02 DJ |
5238 | function call at all, but rather a long jump. Calls through |
5239 | the PLT do not require stubs. */ | |
5240 | if (sym_flags != STT_ARM_TFUNC && sym_flags != STT_SECTION | |
5241 | && (h == NULL || splt == NULL | |
5242 | || h->plt.offset == (bfd_vma) -1)) | |
dfc5f959 | 5243 | { |
bd97cb95 | 5244 | if (globals->use_blx && r_type == R_ARM_THM_CALL) |
39b41c9c PB |
5245 | { |
5246 | /* Convert BL to BLX. */ | |
5247 | lower_insn = (lower_insn & ~0x1000) | 0x0800; | |
5248 | } | |
5249 | else if (elf32_thumb_to_arm_stub | |
dfc5f959 | 5250 | (info, sym_name, input_bfd, output_bfd, input_section, |
f2a9dd69 DJ |
5251 | hit_data, sym_sec, rel->r_offset, signed_addend, value, |
5252 | error_message)) | |
dfc5f959 NC |
5253 | return bfd_reloc_ok; |
5254 | else | |
5255 | return bfd_reloc_dangerous; | |
5256 | } | |
bd97cb95 DJ |
5257 | else if (sym_flags == STT_ARM_TFUNC && globals->use_blx |
5258 | && r_type == R_ARM_THM_CALL) | |
39b41c9c PB |
5259 | { |
5260 | /* Make sure this is a BL. */ | |
5261 | lower_insn |= 0x1800; | |
5262 | } | |
252b5132 | 5263 | } |
f21f3fe0 | 5264 | |
b7693d02 DJ |
5265 | /* Handle calls via the PLT. */ |
5266 | if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1) | |
5267 | { | |
5268 | value = (splt->output_section->vma | |
5269 | + splt->output_offset | |
5270 | + h->plt.offset); | |
bd97cb95 | 5271 | if (globals->use_blx && r_type == R_ARM_THM_CALL) |
33bfe774 JB |
5272 | { |
5273 | /* If the Thumb BLX instruction is available, convert the | |
5274 | BL to a BLX instruction to call the ARM-mode PLT entry. */ | |
39b41c9c | 5275 | lower_insn = (lower_insn & ~0x1000) | 0x0800; |
33bfe774 JB |
5276 | } |
5277 | else | |
5278 | /* Target the Thumb stub before the ARM PLT entry. */ | |
5279 | value -= PLT_THUMB_STUB_SIZE; | |
0945cdfd | 5280 | *unresolved_reloc_p = FALSE; |
b7693d02 DJ |
5281 | } |
5282 | ||
ba96a88f | 5283 | relocation = value + signed_addend; |
f21f3fe0 | 5284 | |
252b5132 | 5285 | relocation -= (input_section->output_section->vma |
ba96a88f NC |
5286 | + input_section->output_offset |
5287 | + rel->r_offset); | |
9a5aca8c | 5288 | |
252b5132 RH |
5289 | check = relocation >> howto->rightshift; |
5290 | ||
5291 | /* If this is a signed value, the rightshift just dropped | |
5292 | leading 1 bits (assuming twos complement). */ | |
5293 | if ((bfd_signed_vma) relocation >= 0) | |
5294 | signed_check = check; | |
5295 | else | |
5296 | signed_check = check | ~((bfd_vma) -1 >> howto->rightshift); | |
5297 | ||
e95de063 MS |
5298 | /* Calculate the permissable maximum and minimum values for |
5299 | this relocation according to whether we're relocating for | |
5300 | Thumb-2 or not. */ | |
5301 | bitsize = howto->bitsize; | |
5302 | if (!thumb2) | |
5303 | bitsize -= 2; | |
5304 | reloc_signed_max = ((1 << (bitsize - 1)) - 1) >> howto->rightshift; | |
5305 | reloc_signed_min = ~reloc_signed_max; | |
5306 | ||
252b5132 | 5307 | /* Assumes two's complement. */ |
ba96a88f | 5308 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) |
b34976b6 | 5309 | overflow = TRUE; |
252b5132 | 5310 | |
bd97cb95 | 5311 | if ((lower_insn & 0x5000) == 0x4000) |
c62e1cc3 NC |
5312 | /* For a BLX instruction, make sure that the relocation is rounded up |
5313 | to a word boundary. This follows the semantics of the instruction | |
5314 | which specifies that bit 1 of the target address will come from bit | |
5315 | 1 of the base address. */ | |
5316 | relocation = (relocation + 2) & ~ 3; | |
cb1afa5c | 5317 | |
e95de063 MS |
5318 | /* Put RELOCATION back into the insn. Assumes two's complement. |
5319 | We use the Thumb-2 encoding, which is safe even if dealing with | |
5320 | a Thumb-1 instruction by virtue of our overflow check above. */ | |
5321 | reloc_sign = (signed_check < 0) ? 1 : 0; | |
5322 | upper_insn = (upper_insn & ~(bfd_vma) 0x7ff) | |
5323 | | ((relocation >> 12) & 0x3ff) | |
5324 | | (reloc_sign << 10); | |
5325 | lower_insn = (lower_insn & ~(bfd_vma) 0x2fff) | |
5326 | | (((!((relocation >> 23) & 1)) ^ reloc_sign) << 13) | |
5327 | | (((!((relocation >> 22) & 1)) ^ reloc_sign) << 11) | |
5328 | | ((relocation >> 1) & 0x7ff); | |
c62e1cc3 | 5329 | |
252b5132 RH |
5330 | /* Put the relocated value back in the object file: */ |
5331 | bfd_put_16 (input_bfd, upper_insn, hit_data); | |
5332 | bfd_put_16 (input_bfd, lower_insn, hit_data + 2); | |
5333 | ||
5334 | return (overflow ? bfd_reloc_overflow : bfd_reloc_ok); | |
5335 | } | |
5336 | break; | |
5337 | ||
c19d1205 ZW |
5338 | case R_ARM_THM_JUMP19: |
5339 | /* Thumb32 conditional branch instruction. */ | |
5340 | { | |
5341 | bfd_vma relocation; | |
5342 | bfd_boolean overflow = FALSE; | |
5343 | bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); | |
5344 | bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); | |
a00a1f35 MS |
5345 | bfd_signed_vma reloc_signed_max = 0xffffe; |
5346 | bfd_signed_vma reloc_signed_min = -0x100000; | |
c19d1205 ZW |
5347 | bfd_signed_vma signed_check; |
5348 | ||
5349 | /* Need to refetch the addend, reconstruct the top three bits, | |
5350 | and squish the two 11 bit pieces together. */ | |
5351 | if (globals->use_rel) | |
5352 | { | |
5353 | bfd_vma S = (upper_insn & 0x0400) >> 10; | |
a00a1f35 | 5354 | bfd_vma upper = (upper_insn & 0x003f); |
c19d1205 ZW |
5355 | bfd_vma J1 = (lower_insn & 0x2000) >> 13; |
5356 | bfd_vma J2 = (lower_insn & 0x0800) >> 11; | |
5357 | bfd_vma lower = (lower_insn & 0x07ff); | |
5358 | ||
a00a1f35 MS |
5359 | upper |= J1 << 6; |
5360 | upper |= J2 << 7; | |
5361 | upper |= (!S) << 8; | |
c19d1205 ZW |
5362 | upper -= 0x0100; /* Sign extend. */ |
5363 | ||
5364 | addend = (upper << 12) | (lower << 1); | |
5365 | signed_addend = addend; | |
5366 | } | |
5367 | ||
bd97cb95 DJ |
5368 | /* Handle calls via the PLT. */ |
5369 | if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1) | |
5370 | { | |
5371 | value = (splt->output_section->vma | |
5372 | + splt->output_offset | |
5373 | + h->plt.offset); | |
5374 | /* Target the Thumb stub before the ARM PLT entry. */ | |
5375 | value -= PLT_THUMB_STUB_SIZE; | |
5376 | *unresolved_reloc_p = FALSE; | |
5377 | } | |
5378 | ||
c19d1205 ZW |
5379 | /* ??? Should handle interworking? GCC might someday try to |
5380 | use this for tail calls. */ | |
5381 | ||
5382 | relocation = value + signed_addend; | |
5383 | relocation -= (input_section->output_section->vma | |
5384 | + input_section->output_offset | |
5385 | + rel->r_offset); | |
a00a1f35 | 5386 | signed_check = (bfd_signed_vma) relocation; |
c19d1205 | 5387 | |
c19d1205 ZW |
5388 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) |
5389 | overflow = TRUE; | |
5390 | ||
5391 | /* Put RELOCATION back into the insn. */ | |
5392 | { | |
5393 | bfd_vma S = (relocation & 0x00100000) >> 20; | |
5394 | bfd_vma J2 = (relocation & 0x00080000) >> 19; | |
5395 | bfd_vma J1 = (relocation & 0x00040000) >> 18; | |
5396 | bfd_vma hi = (relocation & 0x0003f000) >> 12; | |
5397 | bfd_vma lo = (relocation & 0x00000ffe) >> 1; | |
5398 | ||
a00a1f35 | 5399 | upper_insn = (upper_insn & 0xfbc0) | (S << 10) | hi; |
c19d1205 ZW |
5400 | lower_insn = (lower_insn & 0xd000) | (J1 << 13) | (J2 << 11) | lo; |
5401 | } | |
5402 | ||
5403 | /* Put the relocated value back in the object file: */ | |
5404 | bfd_put_16 (input_bfd, upper_insn, hit_data); | |
5405 | bfd_put_16 (input_bfd, lower_insn, hit_data + 2); | |
5406 | ||
5407 | return (overflow ? bfd_reloc_overflow : bfd_reloc_ok); | |
5408 | } | |
5409 | ||
5410 | case R_ARM_THM_JUMP11: | |
5411 | case R_ARM_THM_JUMP8: | |
5412 | case R_ARM_THM_JUMP6: | |
51c5503b NC |
5413 | /* Thumb B (branch) instruction). */ |
5414 | { | |
6cf9e9fe | 5415 | bfd_signed_vma relocation; |
51c5503b NC |
5416 | bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1; |
5417 | bfd_signed_vma reloc_signed_min = ~ reloc_signed_max; | |
51c5503b NC |
5418 | bfd_signed_vma signed_check; |
5419 | ||
c19d1205 ZW |
5420 | /* CZB cannot jump backward. */ |
5421 | if (r_type == R_ARM_THM_JUMP6) | |
5422 | reloc_signed_min = 0; | |
5423 | ||
4e7fd91e | 5424 | if (globals->use_rel) |
6cf9e9fe | 5425 | { |
4e7fd91e PB |
5426 | /* Need to refetch addend. */ |
5427 | addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask; | |
5428 | if (addend & ((howto->src_mask + 1) >> 1)) | |
5429 | { | |
5430 | signed_addend = -1; | |
5431 | signed_addend &= ~ howto->src_mask; | |
5432 | signed_addend |= addend; | |
5433 | } | |
5434 | else | |
5435 | signed_addend = addend; | |
5436 | /* The value in the insn has been right shifted. We need to | |
5437 | undo this, so that we can perform the address calculation | |
5438 | in terms of bytes. */ | |
5439 | signed_addend <<= howto->rightshift; | |
6cf9e9fe | 5440 | } |
6cf9e9fe | 5441 | relocation = value + signed_addend; |
51c5503b NC |
5442 | |
5443 | relocation -= (input_section->output_section->vma | |
5444 | + input_section->output_offset | |
5445 | + rel->r_offset); | |
5446 | ||
6cf9e9fe NC |
5447 | relocation >>= howto->rightshift; |
5448 | signed_check = relocation; | |
c19d1205 ZW |
5449 | |
5450 | if (r_type == R_ARM_THM_JUMP6) | |
5451 | relocation = ((relocation & 0x0020) << 4) | ((relocation & 0x001f) << 3); | |
5452 | else | |
5453 | relocation &= howto->dst_mask; | |
51c5503b | 5454 | relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask)); |
cedb70c5 | 5455 | |
51c5503b NC |
5456 | bfd_put_16 (input_bfd, relocation, hit_data); |
5457 | ||
5458 | /* Assumes two's complement. */ | |
5459 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) | |
5460 | return bfd_reloc_overflow; | |
5461 | ||
5462 | return bfd_reloc_ok; | |
5463 | } | |
cedb70c5 | 5464 | |
8375c36b PB |
5465 | case R_ARM_ALU_PCREL7_0: |
5466 | case R_ARM_ALU_PCREL15_8: | |
5467 | case R_ARM_ALU_PCREL23_15: | |
5468 | { | |
5469 | bfd_vma insn; | |
5470 | bfd_vma relocation; | |
5471 | ||
5472 | insn = bfd_get_32 (input_bfd, hit_data); | |
4e7fd91e PB |
5473 | if (globals->use_rel) |
5474 | { | |
5475 | /* Extract the addend. */ | |
5476 | addend = (insn & 0xff) << ((insn & 0xf00) >> 7); | |
5477 | signed_addend = addend; | |
5478 | } | |
8375c36b PB |
5479 | relocation = value + signed_addend; |
5480 | ||
5481 | relocation -= (input_section->output_section->vma | |
5482 | + input_section->output_offset | |
5483 | + rel->r_offset); | |
5484 | insn = (insn & ~0xfff) | |
5485 | | ((howto->bitpos << 7) & 0xf00) | |
5486 | | ((relocation >> howto->bitpos) & 0xff); | |
5487 | bfd_put_32 (input_bfd, value, hit_data); | |
5488 | } | |
5489 | return bfd_reloc_ok; | |
5490 | ||
252b5132 RH |
5491 | case R_ARM_GNU_VTINHERIT: |
5492 | case R_ARM_GNU_VTENTRY: | |
5493 | return bfd_reloc_ok; | |
5494 | ||
c19d1205 | 5495 | case R_ARM_GOTOFF32: |
252b5132 RH |
5496 | /* Relocation is relative to the start of the |
5497 | global offset table. */ | |
5498 | ||
5499 | BFD_ASSERT (sgot != NULL); | |
5500 | if (sgot == NULL) | |
5501 | return bfd_reloc_notsupported; | |
9a5aca8c | 5502 | |
cedb70c5 | 5503 | /* If we are addressing a Thumb function, we need to adjust the |
ee29b9fb RE |
5504 | address by one, so that attempts to call the function pointer will |
5505 | correctly interpret it as Thumb code. */ | |
5506 | if (sym_flags == STT_ARM_TFUNC) | |
5507 | value += 1; | |
5508 | ||
252b5132 RH |
5509 | /* Note that sgot->output_offset is not involved in this |
5510 | calculation. We always want the start of .got. If we | |
5511 | define _GLOBAL_OFFSET_TABLE in a different way, as is | |
5512 | permitted by the ABI, we might have to change this | |
9b485d32 | 5513 | calculation. */ |
252b5132 | 5514 | value -= sgot->output_section->vma; |
f21f3fe0 | 5515 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 | 5516 | contents, rel->r_offset, value, |
00a97672 | 5517 | rel->r_addend); |
252b5132 RH |
5518 | |
5519 | case R_ARM_GOTPC: | |
a7c10850 | 5520 | /* Use global offset table as symbol value. */ |
252b5132 | 5521 | BFD_ASSERT (sgot != NULL); |
f21f3fe0 | 5522 | |
252b5132 RH |
5523 | if (sgot == NULL) |
5524 | return bfd_reloc_notsupported; | |
5525 | ||
0945cdfd | 5526 | *unresolved_reloc_p = FALSE; |
252b5132 | 5527 | value = sgot->output_section->vma; |
f21f3fe0 | 5528 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 | 5529 | contents, rel->r_offset, value, |
00a97672 | 5530 | rel->r_addend); |
f21f3fe0 | 5531 | |
252b5132 | 5532 | case R_ARM_GOT32: |
eb043451 | 5533 | case R_ARM_GOT_PREL: |
252b5132 | 5534 | /* Relocation is to the entry for this symbol in the |
9b485d32 | 5535 | global offset table. */ |
252b5132 RH |
5536 | if (sgot == NULL) |
5537 | return bfd_reloc_notsupported; | |
f21f3fe0 | 5538 | |
252b5132 RH |
5539 | if (h != NULL) |
5540 | { | |
5541 | bfd_vma off; | |
5e681ec4 | 5542 | bfd_boolean dyn; |
f21f3fe0 | 5543 | |
252b5132 RH |
5544 | off = h->got.offset; |
5545 | BFD_ASSERT (off != (bfd_vma) -1); | |
5e681ec4 | 5546 | dyn = globals->root.dynamic_sections_created; |
f21f3fe0 | 5547 | |
5e681ec4 | 5548 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
50d6c878 | 5549 | || (info->shared |
5e681ec4 PB |
5550 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
5551 | || (ELF_ST_VISIBILITY (h->other) | |
5552 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
5553 | { |
5554 | /* This is actually a static link, or it is a -Bsymbolic link | |
5555 | and the symbol is defined locally. We must initialize this | |
5556 | entry in the global offset table. Since the offset must | |
5557 | always be a multiple of 4, we use the least significant bit | |
5558 | to record whether we have initialized it already. | |
f21f3fe0 | 5559 | |
00a97672 | 5560 | When doing a dynamic link, we create a .rel(a).got relocation |
f21f3fe0 | 5561 | entry to initialize the value. This is done in the |
9b485d32 | 5562 | finish_dynamic_symbol routine. */ |
252b5132 RH |
5563 | if ((off & 1) != 0) |
5564 | off &= ~1; | |
5565 | else | |
5566 | { | |
ee29b9fb RE |
5567 | /* If we are addressing a Thumb function, we need to |
5568 | adjust the address by one, so that attempts to | |
5569 | call the function pointer will correctly | |
5570 | interpret it as Thumb code. */ | |
5571 | if (sym_flags == STT_ARM_TFUNC) | |
5572 | value |= 1; | |
5573 | ||
252b5132 RH |
5574 | bfd_put_32 (output_bfd, value, sgot->contents + off); |
5575 | h->got.offset |= 1; | |
5576 | } | |
5577 | } | |
0945cdfd DJ |
5578 | else |
5579 | *unresolved_reloc_p = FALSE; | |
f21f3fe0 | 5580 | |
252b5132 RH |
5581 | value = sgot->output_offset + off; |
5582 | } | |
5583 | else | |
5584 | { | |
5585 | bfd_vma off; | |
f21f3fe0 | 5586 | |
252b5132 RH |
5587 | BFD_ASSERT (local_got_offsets != NULL && |
5588 | local_got_offsets[r_symndx] != (bfd_vma) -1); | |
f21f3fe0 | 5589 | |
252b5132 | 5590 | off = local_got_offsets[r_symndx]; |
f21f3fe0 | 5591 | |
252b5132 RH |
5592 | /* The offset must always be a multiple of 4. We use the |
5593 | least significant bit to record whether we have already | |
9b485d32 | 5594 | generated the necessary reloc. */ |
252b5132 RH |
5595 | if ((off & 1) != 0) |
5596 | off &= ~1; | |
5597 | else | |
5598 | { | |
b7693d02 DJ |
5599 | /* If we are addressing a Thumb function, we need to |
5600 | adjust the address by one, so that attempts to | |
5601 | call the function pointer will correctly | |
5602 | interpret it as Thumb code. */ | |
5603 | if (sym_flags == STT_ARM_TFUNC) | |
5604 | value |= 1; | |
5605 | ||
00a97672 RS |
5606 | if (globals->use_rel) |
5607 | bfd_put_32 (output_bfd, value, sgot->contents + off); | |
f21f3fe0 | 5608 | |
252b5132 RH |
5609 | if (info->shared) |
5610 | { | |
5611 | asection * srelgot; | |
947216bf AM |
5612 | Elf_Internal_Rela outrel; |
5613 | bfd_byte *loc; | |
f21f3fe0 | 5614 | |
00a97672 RS |
5615 | srelgot = (bfd_get_section_by_name |
5616 | (dynobj, RELOC_SECTION (globals, ".got"))); | |
252b5132 | 5617 | BFD_ASSERT (srelgot != NULL); |
f21f3fe0 | 5618 | |
00a97672 | 5619 | outrel.r_addend = addend + value; |
252b5132 | 5620 | outrel.r_offset = (sgot->output_section->vma |
f21f3fe0 | 5621 | + sgot->output_offset |
252b5132 RH |
5622 | + off); |
5623 | outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); | |
947216bf | 5624 | loc = srelgot->contents; |
00a97672 RS |
5625 | loc += srelgot->reloc_count++ * RELOC_SIZE (globals); |
5626 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
252b5132 | 5627 | } |
f21f3fe0 | 5628 | |
252b5132 RH |
5629 | local_got_offsets[r_symndx] |= 1; |
5630 | } | |
f21f3fe0 | 5631 | |
252b5132 RH |
5632 | value = sgot->output_offset + off; |
5633 | } | |
eb043451 PB |
5634 | if (r_type != R_ARM_GOT32) |
5635 | value += sgot->output_section->vma; | |
9a5aca8c | 5636 | |
f21f3fe0 | 5637 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 | 5638 | contents, rel->r_offset, value, |
00a97672 | 5639 | rel->r_addend); |
f21f3fe0 | 5640 | |
ba93b8ac DJ |
5641 | case R_ARM_TLS_LDO32: |
5642 | value = value - dtpoff_base (info); | |
5643 | ||
5644 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
00a97672 RS |
5645 | contents, rel->r_offset, value, |
5646 | rel->r_addend); | |
ba93b8ac DJ |
5647 | |
5648 | case R_ARM_TLS_LDM32: | |
5649 | { | |
5650 | bfd_vma off; | |
5651 | ||
5652 | if (globals->sgot == NULL) | |
5653 | abort (); | |
5654 | ||
5655 | off = globals->tls_ldm_got.offset; | |
5656 | ||
5657 | if ((off & 1) != 0) | |
5658 | off &= ~1; | |
5659 | else | |
5660 | { | |
5661 | /* If we don't know the module number, create a relocation | |
5662 | for it. */ | |
5663 | if (info->shared) | |
5664 | { | |
5665 | Elf_Internal_Rela outrel; | |
5666 | bfd_byte *loc; | |
5667 | ||
5668 | if (globals->srelgot == NULL) | |
5669 | abort (); | |
5670 | ||
00a97672 | 5671 | outrel.r_addend = 0; |
ba93b8ac DJ |
5672 | outrel.r_offset = (globals->sgot->output_section->vma |
5673 | + globals->sgot->output_offset + off); | |
5674 | outrel.r_info = ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32); | |
5675 | ||
00a97672 RS |
5676 | if (globals->use_rel) |
5677 | bfd_put_32 (output_bfd, outrel.r_addend, | |
5678 | globals->sgot->contents + off); | |
ba93b8ac DJ |
5679 | |
5680 | loc = globals->srelgot->contents; | |
00a97672 RS |
5681 | loc += globals->srelgot->reloc_count++ * RELOC_SIZE (globals); |
5682 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
ba93b8ac DJ |
5683 | } |
5684 | else | |
5685 | bfd_put_32 (output_bfd, 1, globals->sgot->contents + off); | |
5686 | ||
5687 | globals->tls_ldm_got.offset |= 1; | |
5688 | } | |
5689 | ||
5690 | value = globals->sgot->output_section->vma + globals->sgot->output_offset + off | |
5691 | - (input_section->output_section->vma + input_section->output_offset + rel->r_offset); | |
5692 | ||
5693 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
5694 | contents, rel->r_offset, value, | |
00a97672 | 5695 | rel->r_addend); |
ba93b8ac DJ |
5696 | } |
5697 | ||
5698 | case R_ARM_TLS_GD32: | |
5699 | case R_ARM_TLS_IE32: | |
5700 | { | |
5701 | bfd_vma off; | |
5702 | int indx; | |
5703 | char tls_type; | |
5704 | ||
5705 | if (globals->sgot == NULL) | |
5706 | abort (); | |
5707 | ||
5708 | indx = 0; | |
5709 | if (h != NULL) | |
5710 | { | |
5711 | bfd_boolean dyn; | |
5712 | dyn = globals->root.dynamic_sections_created; | |
5713 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
5714 | && (!info->shared | |
5715 | || !SYMBOL_REFERENCES_LOCAL (info, h))) | |
5716 | { | |
5717 | *unresolved_reloc_p = FALSE; | |
5718 | indx = h->dynindx; | |
5719 | } | |
5720 | off = h->got.offset; | |
5721 | tls_type = ((struct elf32_arm_link_hash_entry *) h)->tls_type; | |
5722 | } | |
5723 | else | |
5724 | { | |
5725 | if (local_got_offsets == NULL) | |
5726 | abort (); | |
5727 | off = local_got_offsets[r_symndx]; | |
5728 | tls_type = elf32_arm_local_got_tls_type (input_bfd)[r_symndx]; | |
5729 | } | |
5730 | ||
5731 | if (tls_type == GOT_UNKNOWN) | |
5732 | abort (); | |
5733 | ||
5734 | if ((off & 1) != 0) | |
5735 | off &= ~1; | |
5736 | else | |
5737 | { | |
5738 | bfd_boolean need_relocs = FALSE; | |
5739 | Elf_Internal_Rela outrel; | |
5740 | bfd_byte *loc = NULL; | |
5741 | int cur_off = off; | |
5742 | ||
5743 | /* The GOT entries have not been initialized yet. Do it | |
5744 | now, and emit any relocations. If both an IE GOT and a | |
5745 | GD GOT are necessary, we emit the GD first. */ | |
5746 | ||
5747 | if ((info->shared || indx != 0) | |
5748 | && (h == NULL | |
5749 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5750 | || h->root.type != bfd_link_hash_undefweak)) | |
5751 | { | |
5752 | need_relocs = TRUE; | |
5753 | if (globals->srelgot == NULL) | |
5754 | abort (); | |
5755 | loc = globals->srelgot->contents; | |
00a97672 | 5756 | loc += globals->srelgot->reloc_count * RELOC_SIZE (globals); |
ba93b8ac DJ |
5757 | } |
5758 | ||
5759 | if (tls_type & GOT_TLS_GD) | |
5760 | { | |
5761 | if (need_relocs) | |
5762 | { | |
00a97672 | 5763 | outrel.r_addend = 0; |
ba93b8ac | 5764 | outrel.r_offset = (globals->sgot->output_section->vma |
00a97672 RS |
5765 | + globals->sgot->output_offset |
5766 | + cur_off); | |
ba93b8ac | 5767 | outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DTPMOD32); |
ba93b8ac | 5768 | |
00a97672 RS |
5769 | if (globals->use_rel) |
5770 | bfd_put_32 (output_bfd, outrel.r_addend, | |
5771 | globals->sgot->contents + cur_off); | |
5772 | ||
5773 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
ba93b8ac | 5774 | globals->srelgot->reloc_count++; |
00a97672 | 5775 | loc += RELOC_SIZE (globals); |
ba93b8ac DJ |
5776 | |
5777 | if (indx == 0) | |
5778 | bfd_put_32 (output_bfd, value - dtpoff_base (info), | |
5779 | globals->sgot->contents + cur_off + 4); | |
5780 | else | |
5781 | { | |
00a97672 | 5782 | outrel.r_addend = 0; |
ba93b8ac DJ |
5783 | outrel.r_info = ELF32_R_INFO (indx, |
5784 | R_ARM_TLS_DTPOFF32); | |
5785 | outrel.r_offset += 4; | |
00a97672 RS |
5786 | |
5787 | if (globals->use_rel) | |
5788 | bfd_put_32 (output_bfd, outrel.r_addend, | |
5789 | globals->sgot->contents + cur_off + 4); | |
5790 | ||
5791 | ||
5792 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
ba93b8ac | 5793 | globals->srelgot->reloc_count++; |
00a97672 | 5794 | loc += RELOC_SIZE (globals); |
ba93b8ac DJ |
5795 | } |
5796 | } | |
5797 | else | |
5798 | { | |
5799 | /* If we are not emitting relocations for a | |
5800 | general dynamic reference, then we must be in a | |
5801 | static link or an executable link with the | |
5802 | symbol binding locally. Mark it as belonging | |
5803 | to module 1, the executable. */ | |
5804 | bfd_put_32 (output_bfd, 1, | |
5805 | globals->sgot->contents + cur_off); | |
5806 | bfd_put_32 (output_bfd, value - dtpoff_base (info), | |
5807 | globals->sgot->contents + cur_off + 4); | |
5808 | } | |
5809 | ||
5810 | cur_off += 8; | |
5811 | } | |
5812 | ||
5813 | if (tls_type & GOT_TLS_IE) | |
5814 | { | |
5815 | if (need_relocs) | |
5816 | { | |
00a97672 RS |
5817 | if (indx == 0) |
5818 | outrel.r_addend = value - dtpoff_base (info); | |
5819 | else | |
5820 | outrel.r_addend = 0; | |
ba93b8ac DJ |
5821 | outrel.r_offset = (globals->sgot->output_section->vma |
5822 | + globals->sgot->output_offset | |
5823 | + cur_off); | |
5824 | outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_TPOFF32); | |
5825 | ||
00a97672 RS |
5826 | if (globals->use_rel) |
5827 | bfd_put_32 (output_bfd, outrel.r_addend, | |
ba93b8ac DJ |
5828 | globals->sgot->contents + cur_off); |
5829 | ||
00a97672 | 5830 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); |
ba93b8ac | 5831 | globals->srelgot->reloc_count++; |
00a97672 | 5832 | loc += RELOC_SIZE (globals); |
ba93b8ac DJ |
5833 | } |
5834 | else | |
5835 | bfd_put_32 (output_bfd, tpoff (info, value), | |
5836 | globals->sgot->contents + cur_off); | |
5837 | cur_off += 4; | |
5838 | } | |
5839 | ||
5840 | if (h != NULL) | |
5841 | h->got.offset |= 1; | |
5842 | else | |
5843 | local_got_offsets[r_symndx] |= 1; | |
5844 | } | |
5845 | ||
5846 | if ((tls_type & GOT_TLS_GD) && r_type != R_ARM_TLS_GD32) | |
5847 | off += 8; | |
5848 | value = globals->sgot->output_section->vma + globals->sgot->output_offset + off | |
5849 | - (input_section->output_section->vma + input_section->output_offset + rel->r_offset); | |
5850 | ||
5851 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
5852 | contents, rel->r_offset, value, | |
00a97672 | 5853 | rel->r_addend); |
ba93b8ac DJ |
5854 | } |
5855 | ||
5856 | case R_ARM_TLS_LE32: | |
5857 | if (info->shared) | |
5858 | { | |
5859 | (*_bfd_error_handler) | |
5860 | (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"), | |
5861 | input_bfd, input_section, | |
5862 | (long) rel->r_offset, howto->name); | |
5863 | return FALSE; | |
5864 | } | |
5865 | else | |
5866 | value = tpoff (info, value); | |
5867 | ||
5868 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
00a97672 RS |
5869 | contents, rel->r_offset, value, |
5870 | rel->r_addend); | |
ba93b8ac | 5871 | |
319850b4 JB |
5872 | case R_ARM_V4BX: |
5873 | if (globals->fix_v4bx) | |
845b51d6 PB |
5874 | { |
5875 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
319850b4 | 5876 | |
845b51d6 PB |
5877 | /* Ensure that we have a BX instruction. */ |
5878 | BFD_ASSERT ((insn & 0x0ffffff0) == 0x012fff10); | |
319850b4 | 5879 | |
845b51d6 PB |
5880 | if (globals->fix_v4bx == 2 && (insn & 0xf) != 0xf) |
5881 | { | |
5882 | /* Branch to veneer. */ | |
5883 | bfd_vma glue_addr; | |
5884 | glue_addr = elf32_arm_bx_glue (info, insn & 0xf); | |
5885 | glue_addr -= input_section->output_section->vma | |
5886 | + input_section->output_offset | |
5887 | + rel->r_offset + 8; | |
5888 | insn = (insn & 0xf0000000) | 0x0a000000 | |
5889 | | ((glue_addr >> 2) & 0x00ffffff); | |
5890 | } | |
5891 | else | |
5892 | { | |
5893 | /* Preserve Rm (lowest four bits) and the condition code | |
5894 | (highest four bits). Other bits encode MOV PC,Rm. */ | |
5895 | insn = (insn & 0xf000000f) | 0x01a0f000; | |
5896 | } | |
319850b4 | 5897 | |
845b51d6 PB |
5898 | bfd_put_32 (input_bfd, insn, hit_data); |
5899 | } | |
319850b4 JB |
5900 | return bfd_reloc_ok; |
5901 | ||
b6895b4f PB |
5902 | case R_ARM_MOVW_ABS_NC: |
5903 | case R_ARM_MOVT_ABS: | |
5904 | case R_ARM_MOVW_PREL_NC: | |
5905 | case R_ARM_MOVT_PREL: | |
92f5d02b MS |
5906 | /* Until we properly support segment-base-relative addressing then |
5907 | we assume the segment base to be zero, as for the group relocations. | |
5908 | Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC | |
5909 | and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS. */ | |
5910 | case R_ARM_MOVW_BREL_NC: | |
5911 | case R_ARM_MOVW_BREL: | |
5912 | case R_ARM_MOVT_BREL: | |
b6895b4f PB |
5913 | { |
5914 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
5915 | ||
5916 | if (globals->use_rel) | |
5917 | { | |
5918 | addend = ((insn >> 4) & 0xf000) | (insn & 0xfff); | |
5919 | signed_addend = (addend ^ 0x10000) - 0x10000; | |
5920 | } | |
92f5d02b | 5921 | |
b6895b4f | 5922 | value += signed_addend; |
b6895b4f PB |
5923 | |
5924 | if (r_type == R_ARM_MOVW_PREL_NC || r_type == R_ARM_MOVT_PREL) | |
5925 | value -= (input_section->output_section->vma | |
5926 | + input_section->output_offset + rel->r_offset); | |
5927 | ||
92f5d02b MS |
5928 | if (r_type == R_ARM_MOVW_BREL && value >= 0x10000) |
5929 | return bfd_reloc_overflow; | |
5930 | ||
5931 | if (sym_flags == STT_ARM_TFUNC) | |
5932 | value |= 1; | |
5933 | ||
5934 | if (r_type == R_ARM_MOVT_ABS || r_type == R_ARM_MOVT_PREL | |
5935 | || r_type == R_ARM_MOVT_BREL) | |
b6895b4f PB |
5936 | value >>= 16; |
5937 | ||
5938 | insn &= 0xfff0f000; | |
5939 | insn |= value & 0xfff; | |
5940 | insn |= (value & 0xf000) << 4; | |
5941 | bfd_put_32 (input_bfd, insn, hit_data); | |
5942 | } | |
5943 | return bfd_reloc_ok; | |
5944 | ||
5945 | case R_ARM_THM_MOVW_ABS_NC: | |
5946 | case R_ARM_THM_MOVT_ABS: | |
5947 | case R_ARM_THM_MOVW_PREL_NC: | |
5948 | case R_ARM_THM_MOVT_PREL: | |
92f5d02b MS |
5949 | /* Until we properly support segment-base-relative addressing then |
5950 | we assume the segment base to be zero, as for the above relocations. | |
5951 | Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as | |
5952 | R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics | |
5953 | as R_ARM_THM_MOVT_ABS. */ | |
5954 | case R_ARM_THM_MOVW_BREL_NC: | |
5955 | case R_ARM_THM_MOVW_BREL: | |
5956 | case R_ARM_THM_MOVT_BREL: | |
b6895b4f PB |
5957 | { |
5958 | bfd_vma insn; | |
5959 | ||
5960 | insn = bfd_get_16 (input_bfd, hit_data) << 16; | |
5961 | insn |= bfd_get_16 (input_bfd, hit_data + 2); | |
5962 | ||
5963 | if (globals->use_rel) | |
5964 | { | |
5965 | addend = ((insn >> 4) & 0xf000) | |
5966 | | ((insn >> 15) & 0x0800) | |
5967 | | ((insn >> 4) & 0x0700) | |
5968 | | (insn & 0x00ff); | |
5969 | signed_addend = (addend ^ 0x10000) - 0x10000; | |
5970 | } | |
92f5d02b | 5971 | |
b6895b4f | 5972 | value += signed_addend; |
b6895b4f PB |
5973 | |
5974 | if (r_type == R_ARM_THM_MOVW_PREL_NC || r_type == R_ARM_THM_MOVT_PREL) | |
5975 | value -= (input_section->output_section->vma | |
5976 | + input_section->output_offset + rel->r_offset); | |
5977 | ||
92f5d02b MS |
5978 | if (r_type == R_ARM_THM_MOVW_BREL && value >= 0x10000) |
5979 | return bfd_reloc_overflow; | |
5980 | ||
5981 | if (sym_flags == STT_ARM_TFUNC) | |
5982 | value |= 1; | |
5983 | ||
5984 | if (r_type == R_ARM_THM_MOVT_ABS || r_type == R_ARM_THM_MOVT_PREL | |
5985 | || r_type == R_ARM_THM_MOVT_BREL) | |
b6895b4f PB |
5986 | value >>= 16; |
5987 | ||
5988 | insn &= 0xfbf08f00; | |
5989 | insn |= (value & 0xf000) << 4; | |
5990 | insn |= (value & 0x0800) << 15; | |
5991 | insn |= (value & 0x0700) << 4; | |
5992 | insn |= (value & 0x00ff); | |
5993 | ||
5994 | bfd_put_16 (input_bfd, insn >> 16, hit_data); | |
5995 | bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2); | |
5996 | } | |
5997 | return bfd_reloc_ok; | |
5998 | ||
4962c51a MS |
5999 | case R_ARM_ALU_PC_G0_NC: |
6000 | case R_ARM_ALU_PC_G1_NC: | |
6001 | case R_ARM_ALU_PC_G0: | |
6002 | case R_ARM_ALU_PC_G1: | |
6003 | case R_ARM_ALU_PC_G2: | |
6004 | case R_ARM_ALU_SB_G0_NC: | |
6005 | case R_ARM_ALU_SB_G1_NC: | |
6006 | case R_ARM_ALU_SB_G0: | |
6007 | case R_ARM_ALU_SB_G1: | |
6008 | case R_ARM_ALU_SB_G2: | |
6009 | { | |
6010 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
6011 | bfd_vma pc = input_section->output_section->vma | |
6012 | + input_section->output_offset + rel->r_offset; | |
6013 | /* sb should be the origin of the *segment* containing the symbol. | |
6014 | It is not clear how to obtain this OS-dependent value, so we | |
6015 | make an arbitrary choice of zero. */ | |
6016 | bfd_vma sb = 0; | |
6017 | bfd_vma residual; | |
6018 | bfd_vma g_n; | |
6019 | bfd_signed_vma signed_value; | |
6020 | int group = 0; | |
6021 | ||
6022 | /* Determine which group of bits to select. */ | |
6023 | switch (r_type) | |
6024 | { | |
6025 | case R_ARM_ALU_PC_G0_NC: | |
6026 | case R_ARM_ALU_PC_G0: | |
6027 | case R_ARM_ALU_SB_G0_NC: | |
6028 | case R_ARM_ALU_SB_G0: | |
6029 | group = 0; | |
6030 | break; | |
6031 | ||
6032 | case R_ARM_ALU_PC_G1_NC: | |
6033 | case R_ARM_ALU_PC_G1: | |
6034 | case R_ARM_ALU_SB_G1_NC: | |
6035 | case R_ARM_ALU_SB_G1: | |
6036 | group = 1; | |
6037 | break; | |
6038 | ||
6039 | case R_ARM_ALU_PC_G2: | |
6040 | case R_ARM_ALU_SB_G2: | |
6041 | group = 2; | |
6042 | break; | |
6043 | ||
6044 | default: | |
6045 | abort(); | |
6046 | } | |
6047 | ||
6048 | /* If REL, extract the addend from the insn. If RELA, it will | |
6049 | have already been fetched for us. */ | |
6050 | if (globals->use_rel) | |
6051 | { | |
6052 | int negative; | |
6053 | bfd_vma constant = insn & 0xff; | |
6054 | bfd_vma rotation = (insn & 0xf00) >> 8; | |
6055 | ||
6056 | if (rotation == 0) | |
6057 | signed_addend = constant; | |
6058 | else | |
6059 | { | |
6060 | /* Compensate for the fact that in the instruction, the | |
6061 | rotation is stored in multiples of 2 bits. */ | |
6062 | rotation *= 2; | |
6063 | ||
6064 | /* Rotate "constant" right by "rotation" bits. */ | |
6065 | signed_addend = (constant >> rotation) | | |
6066 | (constant << (8 * sizeof (bfd_vma) - rotation)); | |
6067 | } | |
6068 | ||
6069 | /* Determine if the instruction is an ADD or a SUB. | |
6070 | (For REL, this determines the sign of the addend.) */ | |
6071 | negative = identify_add_or_sub (insn); | |
6072 | if (negative == 0) | |
6073 | { | |
6074 | (*_bfd_error_handler) | |
6075 | (_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"), | |
6076 | input_bfd, input_section, | |
6077 | (long) rel->r_offset, howto->name); | |
6078 | return bfd_reloc_overflow; | |
6079 | } | |
6080 | ||
6081 | signed_addend *= negative; | |
6082 | } | |
6083 | ||
6084 | /* Compute the value (X) to go in the place. */ | |
6085 | if (r_type == R_ARM_ALU_PC_G0_NC | |
6086 | || r_type == R_ARM_ALU_PC_G1_NC | |
6087 | || r_type == R_ARM_ALU_PC_G0 | |
6088 | || r_type == R_ARM_ALU_PC_G1 | |
6089 | || r_type == R_ARM_ALU_PC_G2) | |
6090 | /* PC relative. */ | |
6091 | signed_value = value - pc + signed_addend; | |
6092 | else | |
6093 | /* Section base relative. */ | |
6094 | signed_value = value - sb + signed_addend; | |
6095 | ||
6096 | /* If the target symbol is a Thumb function, then set the | |
6097 | Thumb bit in the address. */ | |
6098 | if (sym_flags == STT_ARM_TFUNC) | |
6099 | signed_value |= 1; | |
6100 | ||
6101 | /* Calculate the value of the relevant G_n, in encoded | |
6102 | constant-with-rotation format. */ | |
6103 | g_n = calculate_group_reloc_mask (abs (signed_value), group, | |
6104 | &residual); | |
6105 | ||
6106 | /* Check for overflow if required. */ | |
6107 | if ((r_type == R_ARM_ALU_PC_G0 | |
6108 | || r_type == R_ARM_ALU_PC_G1 | |
6109 | || r_type == R_ARM_ALU_PC_G2 | |
6110 | || r_type == R_ARM_ALU_SB_G0 | |
6111 | || r_type == R_ARM_ALU_SB_G1 | |
6112 | || r_type == R_ARM_ALU_SB_G2) && residual != 0) | |
6113 | { | |
6114 | (*_bfd_error_handler) | |
6115 | (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"), | |
6116 | input_bfd, input_section, | |
6117 | (long) rel->r_offset, abs (signed_value), howto->name); | |
6118 | return bfd_reloc_overflow; | |
6119 | } | |
6120 | ||
6121 | /* Mask out the value and the ADD/SUB part of the opcode; take care | |
6122 | not to destroy the S bit. */ | |
6123 | insn &= 0xff1ff000; | |
6124 | ||
6125 | /* Set the opcode according to whether the value to go in the | |
6126 | place is negative. */ | |
6127 | if (signed_value < 0) | |
6128 | insn |= 1 << 22; | |
6129 | else | |
6130 | insn |= 1 << 23; | |
6131 | ||
6132 | /* Encode the offset. */ | |
6133 | insn |= g_n; | |
6134 | ||
6135 | bfd_put_32 (input_bfd, insn, hit_data); | |
6136 | } | |
6137 | return bfd_reloc_ok; | |
6138 | ||
6139 | case R_ARM_LDR_PC_G0: | |
6140 | case R_ARM_LDR_PC_G1: | |
6141 | case R_ARM_LDR_PC_G2: | |
6142 | case R_ARM_LDR_SB_G0: | |
6143 | case R_ARM_LDR_SB_G1: | |
6144 | case R_ARM_LDR_SB_G2: | |
6145 | { | |
6146 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
6147 | bfd_vma pc = input_section->output_section->vma | |
6148 | + input_section->output_offset + rel->r_offset; | |
6149 | bfd_vma sb = 0; /* See note above. */ | |
6150 | bfd_vma residual; | |
6151 | bfd_signed_vma signed_value; | |
6152 | int group = 0; | |
6153 | ||
6154 | /* Determine which groups of bits to calculate. */ | |
6155 | switch (r_type) | |
6156 | { | |
6157 | case R_ARM_LDR_PC_G0: | |
6158 | case R_ARM_LDR_SB_G0: | |
6159 | group = 0; | |
6160 | break; | |
6161 | ||
6162 | case R_ARM_LDR_PC_G1: | |
6163 | case R_ARM_LDR_SB_G1: | |
6164 | group = 1; | |
6165 | break; | |
6166 | ||
6167 | case R_ARM_LDR_PC_G2: | |
6168 | case R_ARM_LDR_SB_G2: | |
6169 | group = 2; | |
6170 | break; | |
6171 | ||
6172 | default: | |
6173 | abort(); | |
6174 | } | |
6175 | ||
6176 | /* If REL, extract the addend from the insn. If RELA, it will | |
6177 | have already been fetched for us. */ | |
6178 | if (globals->use_rel) | |
6179 | { | |
6180 | int negative = (insn & (1 << 23)) ? 1 : -1; | |
6181 | signed_addend = negative * (insn & 0xfff); | |
6182 | } | |
6183 | ||
6184 | /* Compute the value (X) to go in the place. */ | |
6185 | if (r_type == R_ARM_LDR_PC_G0 | |
6186 | || r_type == R_ARM_LDR_PC_G1 | |
6187 | || r_type == R_ARM_LDR_PC_G2) | |
6188 | /* PC relative. */ | |
6189 | signed_value = value - pc + signed_addend; | |
6190 | else | |
6191 | /* Section base relative. */ | |
6192 | signed_value = value - sb + signed_addend; | |
6193 | ||
6194 | /* Calculate the value of the relevant G_{n-1} to obtain | |
6195 | the residual at that stage. */ | |
6196 | calculate_group_reloc_mask (abs (signed_value), group - 1, &residual); | |
6197 | ||
6198 | /* Check for overflow. */ | |
6199 | if (residual >= 0x1000) | |
6200 | { | |
6201 | (*_bfd_error_handler) | |
6202 | (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"), | |
6203 | input_bfd, input_section, | |
6204 | (long) rel->r_offset, abs (signed_value), howto->name); | |
6205 | return bfd_reloc_overflow; | |
6206 | } | |
6207 | ||
6208 | /* Mask out the value and U bit. */ | |
6209 | insn &= 0xff7ff000; | |
6210 | ||
6211 | /* Set the U bit if the value to go in the place is non-negative. */ | |
6212 | if (signed_value >= 0) | |
6213 | insn |= 1 << 23; | |
6214 | ||
6215 | /* Encode the offset. */ | |
6216 | insn |= residual; | |
6217 | ||
6218 | bfd_put_32 (input_bfd, insn, hit_data); | |
6219 | } | |
6220 | return bfd_reloc_ok; | |
6221 | ||
6222 | case R_ARM_LDRS_PC_G0: | |
6223 | case R_ARM_LDRS_PC_G1: | |
6224 | case R_ARM_LDRS_PC_G2: | |
6225 | case R_ARM_LDRS_SB_G0: | |
6226 | case R_ARM_LDRS_SB_G1: | |
6227 | case R_ARM_LDRS_SB_G2: | |
6228 | { | |
6229 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
6230 | bfd_vma pc = input_section->output_section->vma | |
6231 | + input_section->output_offset + rel->r_offset; | |
6232 | bfd_vma sb = 0; /* See note above. */ | |
6233 | bfd_vma residual; | |
6234 | bfd_signed_vma signed_value; | |
6235 | int group = 0; | |
6236 | ||
6237 | /* Determine which groups of bits to calculate. */ | |
6238 | switch (r_type) | |
6239 | { | |
6240 | case R_ARM_LDRS_PC_G0: | |
6241 | case R_ARM_LDRS_SB_G0: | |
6242 | group = 0; | |
6243 | break; | |
6244 | ||
6245 | case R_ARM_LDRS_PC_G1: | |
6246 | case R_ARM_LDRS_SB_G1: | |
6247 | group = 1; | |
6248 | break; | |
6249 | ||
6250 | case R_ARM_LDRS_PC_G2: | |
6251 | case R_ARM_LDRS_SB_G2: | |
6252 | group = 2; | |
6253 | break; | |
6254 | ||
6255 | default: | |
6256 | abort(); | |
6257 | } | |
6258 | ||
6259 | /* If REL, extract the addend from the insn. If RELA, it will | |
6260 | have already been fetched for us. */ | |
6261 | if (globals->use_rel) | |
6262 | { | |
6263 | int negative = (insn & (1 << 23)) ? 1 : -1; | |
6264 | signed_addend = negative * (((insn & 0xf00) >> 4) + (insn & 0xf)); | |
6265 | } | |
6266 | ||
6267 | /* Compute the value (X) to go in the place. */ | |
6268 | if (r_type == R_ARM_LDRS_PC_G0 | |
6269 | || r_type == R_ARM_LDRS_PC_G1 | |
6270 | || r_type == R_ARM_LDRS_PC_G2) | |
6271 | /* PC relative. */ | |
6272 | signed_value = value - pc + signed_addend; | |
6273 | else | |
6274 | /* Section base relative. */ | |
6275 | signed_value = value - sb + signed_addend; | |
6276 | ||
6277 | /* Calculate the value of the relevant G_{n-1} to obtain | |
6278 | the residual at that stage. */ | |
6279 | calculate_group_reloc_mask (abs (signed_value), group - 1, &residual); | |
6280 | ||
6281 | /* Check for overflow. */ | |
6282 | if (residual >= 0x100) | |
6283 | { | |
6284 | (*_bfd_error_handler) | |
6285 | (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"), | |
6286 | input_bfd, input_section, | |
6287 | (long) rel->r_offset, abs (signed_value), howto->name); | |
6288 | return bfd_reloc_overflow; | |
6289 | } | |
6290 | ||
6291 | /* Mask out the value and U bit. */ | |
6292 | insn &= 0xff7ff0f0; | |
6293 | ||
6294 | /* Set the U bit if the value to go in the place is non-negative. */ | |
6295 | if (signed_value >= 0) | |
6296 | insn |= 1 << 23; | |
6297 | ||
6298 | /* Encode the offset. */ | |
6299 | insn |= ((residual & 0xf0) << 4) | (residual & 0xf); | |
6300 | ||
6301 | bfd_put_32 (input_bfd, insn, hit_data); | |
6302 | } | |
6303 | return bfd_reloc_ok; | |
6304 | ||
6305 | case R_ARM_LDC_PC_G0: | |
6306 | case R_ARM_LDC_PC_G1: | |
6307 | case R_ARM_LDC_PC_G2: | |
6308 | case R_ARM_LDC_SB_G0: | |
6309 | case R_ARM_LDC_SB_G1: | |
6310 | case R_ARM_LDC_SB_G2: | |
6311 | { | |
6312 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
6313 | bfd_vma pc = input_section->output_section->vma | |
6314 | + input_section->output_offset + rel->r_offset; | |
6315 | bfd_vma sb = 0; /* See note above. */ | |
6316 | bfd_vma residual; | |
6317 | bfd_signed_vma signed_value; | |
6318 | int group = 0; | |
6319 | ||
6320 | /* Determine which groups of bits to calculate. */ | |
6321 | switch (r_type) | |
6322 | { | |
6323 | case R_ARM_LDC_PC_G0: | |
6324 | case R_ARM_LDC_SB_G0: | |
6325 | group = 0; | |
6326 | break; | |
6327 | ||
6328 | case R_ARM_LDC_PC_G1: | |
6329 | case R_ARM_LDC_SB_G1: | |
6330 | group = 1; | |
6331 | break; | |
6332 | ||
6333 | case R_ARM_LDC_PC_G2: | |
6334 | case R_ARM_LDC_SB_G2: | |
6335 | group = 2; | |
6336 | break; | |
6337 | ||
6338 | default: | |
6339 | abort(); | |
6340 | } | |
6341 | ||
6342 | /* If REL, extract the addend from the insn. If RELA, it will | |
6343 | have already been fetched for us. */ | |
6344 | if (globals->use_rel) | |
6345 | { | |
6346 | int negative = (insn & (1 << 23)) ? 1 : -1; | |
6347 | signed_addend = negative * ((insn & 0xff) << 2); | |
6348 | } | |
6349 | ||
6350 | /* Compute the value (X) to go in the place. */ | |
6351 | if (r_type == R_ARM_LDC_PC_G0 | |
6352 | || r_type == R_ARM_LDC_PC_G1 | |
6353 | || r_type == R_ARM_LDC_PC_G2) | |
6354 | /* PC relative. */ | |
6355 | signed_value = value - pc + signed_addend; | |
6356 | else | |
6357 | /* Section base relative. */ | |
6358 | signed_value = value - sb + signed_addend; | |
6359 | ||
6360 | /* Calculate the value of the relevant G_{n-1} to obtain | |
6361 | the residual at that stage. */ | |
6362 | calculate_group_reloc_mask (abs (signed_value), group - 1, &residual); | |
6363 | ||
6364 | /* Check for overflow. (The absolute value to go in the place must be | |
6365 | divisible by four and, after having been divided by four, must | |
6366 | fit in eight bits.) */ | |
6367 | if ((residual & 0x3) != 0 || residual >= 0x400) | |
6368 | { | |
6369 | (*_bfd_error_handler) | |
6370 | (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"), | |
6371 | input_bfd, input_section, | |
6372 | (long) rel->r_offset, abs (signed_value), howto->name); | |
6373 | return bfd_reloc_overflow; | |
6374 | } | |
6375 | ||
6376 | /* Mask out the value and U bit. */ | |
6377 | insn &= 0xff7fff00; | |
6378 | ||
6379 | /* Set the U bit if the value to go in the place is non-negative. */ | |
6380 | if (signed_value >= 0) | |
6381 | insn |= 1 << 23; | |
6382 | ||
6383 | /* Encode the offset. */ | |
6384 | insn |= residual >> 2; | |
6385 | ||
6386 | bfd_put_32 (input_bfd, insn, hit_data); | |
6387 | } | |
6388 | return bfd_reloc_ok; | |
6389 | ||
252b5132 RH |
6390 | default: |
6391 | return bfd_reloc_notsupported; | |
6392 | } | |
6393 | } | |
6394 | ||
98c1d4aa NC |
6395 | /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */ |
6396 | static void | |
57e8b36a NC |
6397 | arm_add_to_rel (bfd * abfd, |
6398 | bfd_byte * address, | |
6399 | reloc_howto_type * howto, | |
6400 | bfd_signed_vma increment) | |
98c1d4aa | 6401 | { |
98c1d4aa NC |
6402 | bfd_signed_vma addend; |
6403 | ||
bd97cb95 DJ |
6404 | if (howto->type == R_ARM_THM_CALL |
6405 | || howto->type == R_ARM_THM_JUMP24) | |
98c1d4aa | 6406 | { |
9a5aca8c AM |
6407 | int upper_insn, lower_insn; |
6408 | int upper, lower; | |
98c1d4aa | 6409 | |
9a5aca8c AM |
6410 | upper_insn = bfd_get_16 (abfd, address); |
6411 | lower_insn = bfd_get_16 (abfd, address + 2); | |
6412 | upper = upper_insn & 0x7ff; | |
6413 | lower = lower_insn & 0x7ff; | |
6414 | ||
6415 | addend = (upper << 12) | (lower << 1); | |
ddda4409 | 6416 | addend += increment; |
9a5aca8c | 6417 | addend >>= 1; |
98c1d4aa | 6418 | |
9a5aca8c AM |
6419 | upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff); |
6420 | lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff); | |
6421 | ||
dc810e39 AM |
6422 | bfd_put_16 (abfd, (bfd_vma) upper_insn, address); |
6423 | bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2); | |
9a5aca8c AM |
6424 | } |
6425 | else | |
6426 | { | |
6427 | bfd_vma contents; | |
6428 | ||
6429 | contents = bfd_get_32 (abfd, address); | |
6430 | ||
6431 | /* Get the (signed) value from the instruction. */ | |
6432 | addend = contents & howto->src_mask; | |
6433 | if (addend & ((howto->src_mask + 1) >> 1)) | |
6434 | { | |
6435 | bfd_signed_vma mask; | |
6436 | ||
6437 | mask = -1; | |
6438 | mask &= ~ howto->src_mask; | |
6439 | addend |= mask; | |
6440 | } | |
6441 | ||
6442 | /* Add in the increment, (which is a byte value). */ | |
6443 | switch (howto->type) | |
6444 | { | |
6445 | default: | |
6446 | addend += increment; | |
6447 | break; | |
6448 | ||
6449 | case R_ARM_PC24: | |
c6596c5e | 6450 | case R_ARM_PLT32: |
5b5bb741 PB |
6451 | case R_ARM_CALL: |
6452 | case R_ARM_JUMP24: | |
9a5aca8c | 6453 | addend <<= howto->size; |
dc810e39 | 6454 | addend += increment; |
9a5aca8c AM |
6455 | |
6456 | /* Should we check for overflow here ? */ | |
6457 | ||
6458 | /* Drop any undesired bits. */ | |
6459 | addend >>= howto->rightshift; | |
6460 | break; | |
6461 | } | |
6462 | ||
6463 | contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask); | |
6464 | ||
6465 | bfd_put_32 (abfd, contents, address); | |
ddda4409 | 6466 | } |
98c1d4aa | 6467 | } |
252b5132 | 6468 | |
ba93b8ac DJ |
6469 | #define IS_ARM_TLS_RELOC(R_TYPE) \ |
6470 | ((R_TYPE) == R_ARM_TLS_GD32 \ | |
6471 | || (R_TYPE) == R_ARM_TLS_LDO32 \ | |
6472 | || (R_TYPE) == R_ARM_TLS_LDM32 \ | |
6473 | || (R_TYPE) == R_ARM_TLS_DTPOFF32 \ | |
6474 | || (R_TYPE) == R_ARM_TLS_DTPMOD32 \ | |
6475 | || (R_TYPE) == R_ARM_TLS_TPOFF32 \ | |
6476 | || (R_TYPE) == R_ARM_TLS_LE32 \ | |
6477 | || (R_TYPE) == R_ARM_TLS_IE32) | |
6478 | ||
252b5132 | 6479 | /* Relocate an ARM ELF section. */ |
b34976b6 | 6480 | static bfd_boolean |
57e8b36a NC |
6481 | elf32_arm_relocate_section (bfd * output_bfd, |
6482 | struct bfd_link_info * info, | |
6483 | bfd * input_bfd, | |
6484 | asection * input_section, | |
6485 | bfd_byte * contents, | |
6486 | Elf_Internal_Rela * relocs, | |
6487 | Elf_Internal_Sym * local_syms, | |
6488 | asection ** local_sections) | |
252b5132 | 6489 | { |
b34976b6 AM |
6490 | Elf_Internal_Shdr *symtab_hdr; |
6491 | struct elf_link_hash_entry **sym_hashes; | |
6492 | Elf_Internal_Rela *rel; | |
6493 | Elf_Internal_Rela *relend; | |
6494 | const char *name; | |
b32d3aa2 | 6495 | struct elf32_arm_link_hash_table * globals; |
252b5132 | 6496 | |
4e7fd91e | 6497 | globals = elf32_arm_hash_table (info); |
b491616a | 6498 | |
0ffa91dd | 6499 | symtab_hdr = & elf_symtab_hdr (input_bfd); |
252b5132 RH |
6500 | sym_hashes = elf_sym_hashes (input_bfd); |
6501 | ||
6502 | rel = relocs; | |
6503 | relend = relocs + input_section->reloc_count; | |
6504 | for (; rel < relend; rel++) | |
6505 | { | |
ba96a88f NC |
6506 | int r_type; |
6507 | reloc_howto_type * howto; | |
6508 | unsigned long r_symndx; | |
6509 | Elf_Internal_Sym * sym; | |
6510 | asection * sec; | |
252b5132 | 6511 | struct elf_link_hash_entry * h; |
ba96a88f NC |
6512 | bfd_vma relocation; |
6513 | bfd_reloc_status_type r; | |
6514 | arelent bfd_reloc; | |
ba93b8ac | 6515 | char sym_type; |
0945cdfd | 6516 | bfd_boolean unresolved_reloc = FALSE; |
f2a9dd69 | 6517 | char *error_message = NULL; |
f21f3fe0 | 6518 | |
252b5132 | 6519 | r_symndx = ELF32_R_SYM (rel->r_info); |
ba96a88f | 6520 | r_type = ELF32_R_TYPE (rel->r_info); |
b32d3aa2 | 6521 | r_type = arm_real_reloc_type (globals, r_type); |
252b5132 | 6522 | |
ba96a88f NC |
6523 | if ( r_type == R_ARM_GNU_VTENTRY |
6524 | || r_type == R_ARM_GNU_VTINHERIT) | |
252b5132 RH |
6525 | continue; |
6526 | ||
b32d3aa2 | 6527 | bfd_reloc.howto = elf32_arm_howto_from_type (r_type); |
ba96a88f | 6528 | howto = bfd_reloc.howto; |
252b5132 | 6529 | |
252b5132 RH |
6530 | h = NULL; |
6531 | sym = NULL; | |
6532 | sec = NULL; | |
9b485d32 | 6533 | |
252b5132 RH |
6534 | if (r_symndx < symtab_hdr->sh_info) |
6535 | { | |
6536 | sym = local_syms + r_symndx; | |
ba93b8ac | 6537 | sym_type = ELF32_ST_TYPE (sym->st_info); |
252b5132 | 6538 | sec = local_sections[r_symndx]; |
4e7fd91e | 6539 | if (globals->use_rel) |
f8df10f4 | 6540 | { |
4e7fd91e PB |
6541 | relocation = (sec->output_section->vma |
6542 | + sec->output_offset | |
6543 | + sym->st_value); | |
ab96bf03 AM |
6544 | if (!info->relocatable |
6545 | && (sec->flags & SEC_MERGE) | |
6546 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
f8df10f4 | 6547 | { |
4e7fd91e PB |
6548 | asection *msec; |
6549 | bfd_vma addend, value; | |
6550 | ||
6551 | if (howto->rightshift) | |
6552 | { | |
6553 | (*_bfd_error_handler) | |
6554 | (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"), | |
6555 | input_bfd, input_section, | |
6556 | (long) rel->r_offset, howto->name); | |
6557 | return FALSE; | |
6558 | } | |
f8df10f4 | 6559 | |
4e7fd91e | 6560 | value = bfd_get_32 (input_bfd, contents + rel->r_offset); |
f8df10f4 | 6561 | |
4e7fd91e PB |
6562 | /* Get the (signed) value from the instruction. */ |
6563 | addend = value & howto->src_mask; | |
6564 | if (addend & ((howto->src_mask + 1) >> 1)) | |
6565 | { | |
6566 | bfd_signed_vma mask; | |
f8df10f4 | 6567 | |
4e7fd91e PB |
6568 | mask = -1; |
6569 | mask &= ~ howto->src_mask; | |
6570 | addend |= mask; | |
6571 | } | |
6572 | msec = sec; | |
6573 | addend = | |
6574 | _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend) | |
6575 | - relocation; | |
6576 | addend += msec->output_section->vma + msec->output_offset; | |
6577 | value = (value & ~ howto->dst_mask) | (addend & howto->dst_mask); | |
6578 | bfd_put_32 (input_bfd, value, contents + rel->r_offset); | |
f8df10f4 | 6579 | } |
f8df10f4 | 6580 | } |
4e7fd91e PB |
6581 | else |
6582 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
252b5132 RH |
6583 | } |
6584 | else | |
6585 | { | |
560e09e9 | 6586 | bfd_boolean warned; |
560e09e9 | 6587 | |
b2a8e766 AM |
6588 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
6589 | r_symndx, symtab_hdr, sym_hashes, | |
6590 | h, sec, relocation, | |
6591 | unresolved_reloc, warned); | |
ba93b8ac DJ |
6592 | |
6593 | sym_type = h->type; | |
252b5132 RH |
6594 | } |
6595 | ||
ab96bf03 AM |
6596 | if (sec != NULL && elf_discarded_section (sec)) |
6597 | { | |
6598 | /* For relocs against symbols from removed linkonce sections, | |
6599 | or sections discarded by a linker script, we just want the | |
6600 | section contents zeroed. Avoid any special processing. */ | |
6601 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); | |
6602 | rel->r_info = 0; | |
6603 | rel->r_addend = 0; | |
6604 | continue; | |
6605 | } | |
6606 | ||
6607 | if (info->relocatable) | |
6608 | { | |
6609 | /* This is a relocatable link. We don't have to change | |
6610 | anything, unless the reloc is against a section symbol, | |
6611 | in which case we have to adjust according to where the | |
6612 | section symbol winds up in the output section. */ | |
6613 | if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
6614 | { | |
6615 | if (globals->use_rel) | |
6616 | arm_add_to_rel (input_bfd, contents + rel->r_offset, | |
6617 | howto, (bfd_signed_vma) sec->output_offset); | |
6618 | else | |
6619 | rel->r_addend += sec->output_offset; | |
6620 | } | |
6621 | continue; | |
6622 | } | |
6623 | ||
252b5132 RH |
6624 | if (h != NULL) |
6625 | name = h->root.root.string; | |
6626 | else | |
6627 | { | |
6628 | name = (bfd_elf_string_from_elf_section | |
6629 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
6630 | if (name == NULL || *name == '\0') | |
6631 | name = bfd_section_name (input_bfd, sec); | |
6632 | } | |
f21f3fe0 | 6633 | |
ba93b8ac DJ |
6634 | if (r_symndx != 0 |
6635 | && r_type != R_ARM_NONE | |
6636 | && (h == NULL | |
6637 | || h->root.type == bfd_link_hash_defined | |
6638 | || h->root.type == bfd_link_hash_defweak) | |
6639 | && IS_ARM_TLS_RELOC (r_type) != (sym_type == STT_TLS)) | |
6640 | { | |
6641 | (*_bfd_error_handler) | |
6642 | ((sym_type == STT_TLS | |
6643 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") | |
6644 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")), | |
6645 | input_bfd, | |
6646 | input_section, | |
6647 | (long) rel->r_offset, | |
6648 | howto->name, | |
6649 | name); | |
6650 | } | |
6651 | ||
252b5132 RH |
6652 | r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd, |
6653 | input_section, contents, rel, | |
6654 | relocation, info, sec, name, | |
6655 | (h ? ELF_ST_TYPE (h->type) : | |
0945cdfd | 6656 | ELF_ST_TYPE (sym->st_info)), h, |
f2a9dd69 | 6657 | &unresolved_reloc, &error_message); |
0945cdfd DJ |
6658 | |
6659 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections | |
6660 | because such sections are not SEC_ALLOC and thus ld.so will | |
6661 | not process them. */ | |
6662 | if (unresolved_reloc | |
6663 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
6664 | && h->def_dynamic)) | |
6665 | { | |
6666 | (*_bfd_error_handler) | |
843fe662 L |
6667 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
6668 | input_bfd, | |
6669 | input_section, | |
6670 | (long) rel->r_offset, | |
6671 | howto->name, | |
6672 | h->root.root.string); | |
0945cdfd DJ |
6673 | return FALSE; |
6674 | } | |
252b5132 RH |
6675 | |
6676 | if (r != bfd_reloc_ok) | |
6677 | { | |
252b5132 RH |
6678 | switch (r) |
6679 | { | |
6680 | case bfd_reloc_overflow: | |
cf919dfd PB |
6681 | /* If the overflowing reloc was to an undefined symbol, |
6682 | we have already printed one error message and there | |
6683 | is no point complaining again. */ | |
6684 | if ((! h || | |
6685 | h->root.type != bfd_link_hash_undefined) | |
6686 | && (!((*info->callbacks->reloc_overflow) | |
dfeffb9f L |
6687 | (info, (h ? &h->root : NULL), name, howto->name, |
6688 | (bfd_vma) 0, input_bfd, input_section, | |
6689 | rel->r_offset)))) | |
b34976b6 | 6690 | return FALSE; |
252b5132 RH |
6691 | break; |
6692 | ||
6693 | case bfd_reloc_undefined: | |
6694 | if (!((*info->callbacks->undefined_symbol) | |
6695 | (info, name, input_bfd, input_section, | |
b34976b6 AM |
6696 | rel->r_offset, TRUE))) |
6697 | return FALSE; | |
252b5132 RH |
6698 | break; |
6699 | ||
6700 | case bfd_reloc_outofrange: | |
f2a9dd69 | 6701 | error_message = _("out of range"); |
252b5132 RH |
6702 | goto common_error; |
6703 | ||
6704 | case bfd_reloc_notsupported: | |
f2a9dd69 | 6705 | error_message = _("unsupported relocation"); |
252b5132 RH |
6706 | goto common_error; |
6707 | ||
6708 | case bfd_reloc_dangerous: | |
f2a9dd69 | 6709 | /* error_message should already be set. */ |
252b5132 RH |
6710 | goto common_error; |
6711 | ||
6712 | default: | |
f2a9dd69 | 6713 | error_message = _("unknown error"); |
252b5132 RH |
6714 | /* fall through */ |
6715 | ||
6716 | common_error: | |
f2a9dd69 DJ |
6717 | BFD_ASSERT (error_message != NULL); |
6718 | if (!((*info->callbacks->reloc_dangerous) | |
6719 | (info, error_message, input_bfd, input_section, | |
252b5132 | 6720 | rel->r_offset))) |
b34976b6 | 6721 | return FALSE; |
252b5132 RH |
6722 | break; |
6723 | } | |
6724 | } | |
6725 | } | |
6726 | ||
b34976b6 | 6727 | return TRUE; |
252b5132 RH |
6728 | } |
6729 | ||
c178919b NC |
6730 | /* Set the right machine number. */ |
6731 | ||
6732 | static bfd_boolean | |
57e8b36a | 6733 | elf32_arm_object_p (bfd *abfd) |
c178919b | 6734 | { |
5a6c6817 | 6735 | unsigned int mach; |
57e8b36a | 6736 | |
5a6c6817 | 6737 | mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION); |
c178919b | 6738 | |
5a6c6817 NC |
6739 | if (mach != bfd_mach_arm_unknown) |
6740 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach); | |
6741 | ||
6742 | else if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT) | |
6743 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_ep9312); | |
e16bb312 | 6744 | |
e16bb312 | 6745 | else |
5a6c6817 | 6746 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach); |
c178919b NC |
6747 | |
6748 | return TRUE; | |
6749 | } | |
6750 | ||
fc830a83 | 6751 | /* Function to keep ARM specific flags in the ELF header. */ |
3c9458e9 | 6752 | |
b34976b6 | 6753 | static bfd_boolean |
57e8b36a | 6754 | elf32_arm_set_private_flags (bfd *abfd, flagword flags) |
252b5132 RH |
6755 | { |
6756 | if (elf_flags_init (abfd) | |
6757 | && elf_elfheader (abfd)->e_flags != flags) | |
6758 | { | |
fc830a83 NC |
6759 | if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN) |
6760 | { | |
fd2ec330 | 6761 | if (flags & EF_ARM_INTERWORK) |
d003868e AM |
6762 | (*_bfd_error_handler) |
6763 | (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"), | |
6764 | abfd); | |
fc830a83 | 6765 | else |
d003868e AM |
6766 | _bfd_error_handler |
6767 | (_("Warning: Clearing the interworking flag of %B due to outside request"), | |
6768 | abfd); | |
fc830a83 | 6769 | } |
252b5132 RH |
6770 | } |
6771 | else | |
6772 | { | |
6773 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 | 6774 | elf_flags_init (abfd) = TRUE; |
252b5132 RH |
6775 | } |
6776 | ||
b34976b6 | 6777 | return TRUE; |
252b5132 RH |
6778 | } |
6779 | ||
fc830a83 | 6780 | /* Copy backend specific data from one object module to another. */ |
9b485d32 | 6781 | |
b34976b6 | 6782 | static bfd_boolean |
57e8b36a | 6783 | elf32_arm_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
252b5132 RH |
6784 | { |
6785 | flagword in_flags; | |
6786 | flagword out_flags; | |
6787 | ||
0ffa91dd | 6788 | if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd)) |
b34976b6 | 6789 | return TRUE; |
252b5132 | 6790 | |
fc830a83 | 6791 | in_flags = elf_elfheader (ibfd)->e_flags; |
252b5132 RH |
6792 | out_flags = elf_elfheader (obfd)->e_flags; |
6793 | ||
fc830a83 NC |
6794 | if (elf_flags_init (obfd) |
6795 | && EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN | |
6796 | && in_flags != out_flags) | |
252b5132 | 6797 | { |
252b5132 | 6798 | /* Cannot mix APCS26 and APCS32 code. */ |
fd2ec330 | 6799 | if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26)) |
b34976b6 | 6800 | return FALSE; |
252b5132 RH |
6801 | |
6802 | /* Cannot mix float APCS and non-float APCS code. */ | |
fd2ec330 | 6803 | if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT)) |
b34976b6 | 6804 | return FALSE; |
252b5132 RH |
6805 | |
6806 | /* If the src and dest have different interworking flags | |
6807 | then turn off the interworking bit. */ | |
fd2ec330 | 6808 | if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK)) |
252b5132 | 6809 | { |
fd2ec330 | 6810 | if (out_flags & EF_ARM_INTERWORK) |
d003868e AM |
6811 | _bfd_error_handler |
6812 | (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"), | |
6813 | obfd, ibfd); | |
252b5132 | 6814 | |
fd2ec330 | 6815 | in_flags &= ~EF_ARM_INTERWORK; |
252b5132 | 6816 | } |
1006ba19 PB |
6817 | |
6818 | /* Likewise for PIC, though don't warn for this case. */ | |
fd2ec330 PB |
6819 | if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC)) |
6820 | in_flags &= ~EF_ARM_PIC; | |
252b5132 RH |
6821 | } |
6822 | ||
6823 | elf_elfheader (obfd)->e_flags = in_flags; | |
b34976b6 | 6824 | elf_flags_init (obfd) = TRUE; |
252b5132 | 6825 | |
94a3258f PB |
6826 | /* Also copy the EI_OSABI field. */ |
6827 | elf_elfheader (obfd)->e_ident[EI_OSABI] = | |
6828 | elf_elfheader (ibfd)->e_ident[EI_OSABI]; | |
6829 | ||
104d59d1 JM |
6830 | /* Copy object attributes. */ |
6831 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
ee065d83 PB |
6832 | |
6833 | return TRUE; | |
6834 | } | |
6835 | ||
6836 | /* Values for Tag_ABI_PCS_R9_use. */ | |
6837 | enum | |
6838 | { | |
6839 | AEABI_R9_V6, | |
6840 | AEABI_R9_SB, | |
6841 | AEABI_R9_TLS, | |
6842 | AEABI_R9_unused | |
6843 | }; | |
6844 | ||
6845 | /* Values for Tag_ABI_PCS_RW_data. */ | |
6846 | enum | |
6847 | { | |
6848 | AEABI_PCS_RW_data_absolute, | |
6849 | AEABI_PCS_RW_data_PCrel, | |
6850 | AEABI_PCS_RW_data_SBrel, | |
6851 | AEABI_PCS_RW_data_unused | |
6852 | }; | |
6853 | ||
6854 | /* Values for Tag_ABI_enum_size. */ | |
6855 | enum | |
6856 | { | |
6857 | AEABI_enum_unused, | |
6858 | AEABI_enum_short, | |
6859 | AEABI_enum_wide, | |
6860 | AEABI_enum_forced_wide | |
6861 | }; | |
6862 | ||
104d59d1 JM |
6863 | /* Determine whether an object attribute tag takes an integer, a |
6864 | string or both. */ | |
6865 | static int | |
6866 | elf32_arm_obj_attrs_arg_type (int tag) | |
6867 | { | |
6868 | if (tag == Tag_compatibility) | |
6869 | return 3; | |
6870 | else if (tag == 4 || tag == 5) | |
6871 | return 2; | |
6872 | else if (tag < 32) | |
6873 | return 1; | |
6874 | else | |
6875 | return (tag & 1) != 0 ? 2 : 1; | |
6876 | } | |
6877 | ||
ee065d83 PB |
6878 | /* Merge EABI object attributes from IBFD into OBFD. Raise an error if there |
6879 | are conflicting attributes. */ | |
6880 | static bfd_boolean | |
6881 | elf32_arm_merge_eabi_attributes (bfd *ibfd, bfd *obfd) | |
6882 | { | |
104d59d1 JM |
6883 | obj_attribute *in_attr; |
6884 | obj_attribute *out_attr; | |
6885 | obj_attribute_list *in_list; | |
ee065d83 PB |
6886 | /* Some tags have 0 = don't care, 1 = strong requirement, |
6887 | 2 = weak requirement. */ | |
6888 | static const int order_312[3] = {3, 1, 2}; | |
6889 | int i; | |
6890 | ||
104d59d1 | 6891 | if (!elf_known_obj_attributes_proc (obfd)[0].i) |
ee065d83 PB |
6892 | { |
6893 | /* This is the first object. Copy the attributes. */ | |
104d59d1 | 6894 | _bfd_elf_copy_obj_attributes (ibfd, obfd); |
004ae526 PB |
6895 | |
6896 | /* Use the Tag_null value to indicate the attributes have been | |
6897 | initialized. */ | |
104d59d1 | 6898 | elf_known_obj_attributes_proc (obfd)[0].i = 1; |
004ae526 | 6899 | |
ee065d83 PB |
6900 | return TRUE; |
6901 | } | |
6902 | ||
104d59d1 JM |
6903 | in_attr = elf_known_obj_attributes_proc (ibfd); |
6904 | out_attr = elf_known_obj_attributes_proc (obfd); | |
ee065d83 PB |
6905 | /* This needs to happen before Tag_ABI_FP_number_model is merged. */ |
6906 | if (in_attr[Tag_ABI_VFP_args].i != out_attr[Tag_ABI_VFP_args].i) | |
6907 | { | |
6908 | /* Ignore mismatches if teh object doesn't use floating point. */ | |
6909 | if (out_attr[Tag_ABI_FP_number_model].i == 0) | |
6910 | out_attr[Tag_ABI_VFP_args].i = in_attr[Tag_ABI_VFP_args].i; | |
6911 | else if (in_attr[Tag_ABI_FP_number_model].i != 0) | |
6912 | { | |
6913 | _bfd_error_handler | |
6914 | (_("ERROR: %B uses VFP register arguments, %B does not"), | |
6915 | ibfd, obfd); | |
6916 | return FALSE; | |
6917 | } | |
6918 | } | |
6919 | ||
104d59d1 | 6920 | for (i = 4; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++) |
ee065d83 PB |
6921 | { |
6922 | /* Merge this attribute with existing attributes. */ | |
6923 | switch (i) | |
6924 | { | |
6925 | case Tag_CPU_raw_name: | |
6926 | case Tag_CPU_name: | |
004ae526 PB |
6927 | /* Use whichever has the greatest architecture requirements. We |
6928 | won't necessarily have both the above tags, so make sure input | |
6929 | name is non-NULL. */ | |
6930 | if (in_attr[Tag_CPU_arch].i > out_attr[Tag_CPU_arch].i | |
6931 | && in_attr[i].s) | |
104d59d1 | 6932 | out_attr[i].s = _bfd_elf_attr_strdup (obfd, in_attr[i].s); |
ee065d83 PB |
6933 | break; |
6934 | ||
6935 | case Tag_ABI_optimization_goals: | |
6936 | case Tag_ABI_FP_optimization_goals: | |
6937 | /* Use the first value seen. */ | |
6938 | break; | |
6939 | ||
6940 | case Tag_CPU_arch: | |
6941 | case Tag_ARM_ISA_use: | |
6942 | case Tag_THUMB_ISA_use: | |
6943 | case Tag_VFP_arch: | |
6944 | case Tag_WMMX_arch: | |
6945 | case Tag_NEON_arch: | |
6946 | /* ??? Do NEON and WMMX conflict? */ | |
6947 | case Tag_ABI_FP_rounding: | |
6948 | case Tag_ABI_FP_denormal: | |
6949 | case Tag_ABI_FP_exceptions: | |
6950 | case Tag_ABI_FP_user_exceptions: | |
6951 | case Tag_ABI_FP_number_model: | |
6952 | case Tag_ABI_align8_preserved: | |
6953 | case Tag_ABI_HardFP_use: | |
6954 | /* Use the largest value specified. */ | |
6955 | if (in_attr[i].i > out_attr[i].i) | |
6956 | out_attr[i].i = in_attr[i].i; | |
6957 | break; | |
6958 | ||
6959 | case Tag_CPU_arch_profile: | |
6960 | /* Warn if conflicting architecture profiles used. */ | |
6961 | if (out_attr[i].i && in_attr[i].i && in_attr[i].i != out_attr[i].i) | |
6962 | { | |
6963 | _bfd_error_handler | |
6964 | (_("ERROR: %B: Conflicting architecture profiles %c/%c"), | |
6965 | ibfd, in_attr[i].i, out_attr[i].i); | |
6966 | return FALSE; | |
6967 | } | |
6968 | if (in_attr[i].i) | |
6969 | out_attr[i].i = in_attr[i].i; | |
6970 | break; | |
6971 | case Tag_PCS_config: | |
6972 | if (out_attr[i].i == 0) | |
6973 | out_attr[i].i = in_attr[i].i; | |
6974 | else if (in_attr[i].i != 0 && out_attr[i].i != 0) | |
6975 | { | |
6976 | /* It's sometimes ok to mix different configs, so this is only | |
6977 | a warning. */ | |
6978 | _bfd_error_handler | |
6979 | (_("Warning: %B: Conflicting platform configuration"), ibfd); | |
6980 | } | |
6981 | break; | |
6982 | case Tag_ABI_PCS_R9_use: | |
004ae526 PB |
6983 | if (in_attr[i].i != out_attr[i].i |
6984 | && out_attr[i].i != AEABI_R9_unused | |
ee065d83 PB |
6985 | && in_attr[i].i != AEABI_R9_unused) |
6986 | { | |
6987 | _bfd_error_handler | |
6988 | (_("ERROR: %B: Conflicting use of R9"), ibfd); | |
6989 | return FALSE; | |
6990 | } | |
6991 | if (out_attr[i].i == AEABI_R9_unused) | |
6992 | out_attr[i].i = in_attr[i].i; | |
6993 | break; | |
6994 | case Tag_ABI_PCS_RW_data: | |
6995 | if (in_attr[i].i == AEABI_PCS_RW_data_SBrel | |
6996 | && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_SB | |
6997 | && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_unused) | |
6998 | { | |
6999 | _bfd_error_handler | |
7000 | (_("ERROR: %B: SB relative addressing conflicts with use of R9"), | |
7001 | ibfd); | |
7002 | return FALSE; | |
7003 | } | |
7004 | /* Use the smallest value specified. */ | |
7005 | if (in_attr[i].i < out_attr[i].i) | |
7006 | out_attr[i].i = in_attr[i].i; | |
7007 | break; | |
7008 | case Tag_ABI_PCS_RO_data: | |
7009 | /* Use the smallest value specified. */ | |
7010 | if (in_attr[i].i < out_attr[i].i) | |
7011 | out_attr[i].i = in_attr[i].i; | |
7012 | break; | |
7013 | case Tag_ABI_PCS_GOT_use: | |
7014 | if (in_attr[i].i > 2 || out_attr[i].i > 2 | |
7015 | || order_312[in_attr[i].i] < order_312[out_attr[i].i]) | |
7016 | out_attr[i].i = in_attr[i].i; | |
7017 | break; | |
7018 | case Tag_ABI_PCS_wchar_t: | |
7019 | if (out_attr[i].i && in_attr[i].i && out_attr[i].i != in_attr[i].i) | |
7020 | { | |
7021 | _bfd_error_handler | |
7022 | (_("ERROR: %B: Conflicting definitions of wchar_t"), ibfd); | |
7023 | return FALSE; | |
7024 | } | |
7025 | if (in_attr[i].i) | |
7026 | out_attr[i].i = in_attr[i].i; | |
7027 | break; | |
7028 | case Tag_ABI_align8_needed: | |
7029 | /* ??? Check against Tag_ABI_align8_preserved. */ | |
7030 | if (in_attr[i].i > 2 || out_attr[i].i > 2 | |
7031 | || order_312[in_attr[i].i] < order_312[out_attr[i].i]) | |
7032 | out_attr[i].i = in_attr[i].i; | |
7033 | break; | |
7034 | case Tag_ABI_enum_size: | |
7035 | if (in_attr[i].i != AEABI_enum_unused) | |
7036 | { | |
7037 | if (out_attr[i].i == AEABI_enum_unused | |
7038 | || out_attr[i].i == AEABI_enum_forced_wide) | |
7039 | { | |
7040 | /* The existing object is compatible with anything. | |
7041 | Use whatever requirements the new object has. */ | |
7042 | out_attr[i].i = in_attr[i].i; | |
7043 | } | |
7044 | else if (in_attr[i].i != AEABI_enum_forced_wide | |
bf21ed78 | 7045 | && out_attr[i].i != in_attr[i].i |
0ffa91dd | 7046 | && !elf_arm_tdata (obfd)->no_enum_size_warning) |
ee065d83 | 7047 | { |
bf21ed78 MS |
7048 | const char *aeabi_enum_names[] = |
7049 | { "", "variable-size", "32-bit", "" }; | |
ee065d83 | 7050 | _bfd_error_handler |
bf21ed78 MS |
7051 | (_("warning: %B uses %s enums yet the output is to use %s enums; use of enum values across objects may fail"), |
7052 | ibfd, aeabi_enum_names[in_attr[i].i], | |
7053 | aeabi_enum_names[out_attr[i].i]); | |
ee065d83 PB |
7054 | } |
7055 | } | |
7056 | break; | |
7057 | case Tag_ABI_VFP_args: | |
7058 | /* Aready done. */ | |
7059 | break; | |
7060 | case Tag_ABI_WMMX_args: | |
7061 | if (in_attr[i].i != out_attr[i].i) | |
7062 | { | |
7063 | _bfd_error_handler | |
7064 | (_("ERROR: %B uses iWMMXt register arguments, %B does not"), | |
7065 | ibfd, obfd); | |
7066 | return FALSE; | |
7067 | } | |
7068 | break; | |
7069 | default: /* All known attributes should be explicitly covered. */ | |
7070 | abort (); | |
7071 | } | |
3cfad14c JM |
7072 | |
7073 | if (in_attr[i].type && !out_attr[i].type) | |
7074 | switch (in_attr[i].type) | |
7075 | { | |
7076 | case 1: | |
7077 | if (out_attr[i].i) | |
7078 | out_attr[i].type = 1; | |
7079 | break; | |
7080 | ||
7081 | case 2: | |
7082 | if (out_attr[i].s) | |
7083 | out_attr[i].type = 2; | |
7084 | break; | |
7085 | ||
7086 | default: | |
7087 | abort (); | |
7088 | } | |
ee065d83 PB |
7089 | } |
7090 | ||
104d59d1 JM |
7091 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
7092 | _bfd_elf_merge_object_attributes (ibfd, obfd); | |
ee065d83 | 7093 | |
104d59d1 JM |
7094 | /* Check for any attributes not known on ARM. */ |
7095 | in_list = elf_other_obj_attributes_proc (ibfd); | |
7096 | while (in_list && in_list->tag == Tag_compatibility) | |
7097 | in_list = in_list->next; | |
ee065d83 PB |
7098 | |
7099 | for (; in_list; in_list = in_list->next) | |
7100 | { | |
7101 | if ((in_list->tag & 128) < 64) | |
eb111b1f BE |
7102 | { |
7103 | _bfd_error_handler | |
7104 | (_("Warning: %B: Unknown EABI object attribute %d"), | |
7105 | ibfd, in_list->tag); | |
7106 | break; | |
7107 | } | |
ee065d83 | 7108 | } |
b34976b6 | 7109 | return TRUE; |
252b5132 RH |
7110 | } |
7111 | ||
3a4a14e9 PB |
7112 | |
7113 | /* Return TRUE if the two EABI versions are incompatible. */ | |
7114 | ||
7115 | static bfd_boolean | |
7116 | elf32_arm_versions_compatible (unsigned iver, unsigned over) | |
7117 | { | |
7118 | /* v4 and v5 are the same spec before and after it was released, | |
7119 | so allow mixing them. */ | |
7120 | if ((iver == EF_ARM_EABI_VER4 && over == EF_ARM_EABI_VER5) | |
7121 | || (iver == EF_ARM_EABI_VER5 && over == EF_ARM_EABI_VER4)) | |
7122 | return TRUE; | |
7123 | ||
7124 | return (iver == over); | |
7125 | } | |
7126 | ||
252b5132 RH |
7127 | /* Merge backend specific data from an object file to the output |
7128 | object file when linking. */ | |
9b485d32 | 7129 | |
b34976b6 | 7130 | static bfd_boolean |
57e8b36a | 7131 | elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd) |
252b5132 RH |
7132 | { |
7133 | flagword out_flags; | |
7134 | flagword in_flags; | |
b34976b6 | 7135 | bfd_boolean flags_compatible = TRUE; |
cf919dfd | 7136 | asection *sec; |
252b5132 | 7137 | |
9b485d32 | 7138 | /* Check if we have the same endianess. */ |
82e51918 | 7139 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) |
b34976b6 | 7140 | return FALSE; |
1fe494a5 | 7141 | |
0ffa91dd | 7142 | if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd)) |
b34976b6 | 7143 | return TRUE; |
252b5132 | 7144 | |
ee065d83 PB |
7145 | if (!elf32_arm_merge_eabi_attributes (ibfd, obfd)) |
7146 | return FALSE; | |
7147 | ||
252b5132 RH |
7148 | /* The input BFD must have had its flags initialised. */ |
7149 | /* The following seems bogus to me -- The flags are initialized in | |
7150 | the assembler but I don't think an elf_flags_init field is | |
9b485d32 | 7151 | written into the object. */ |
252b5132 RH |
7152 | /* BFD_ASSERT (elf_flags_init (ibfd)); */ |
7153 | ||
7154 | in_flags = elf_elfheader (ibfd)->e_flags; | |
7155 | out_flags = elf_elfheader (obfd)->e_flags; | |
7156 | ||
7157 | if (!elf_flags_init (obfd)) | |
7158 | { | |
fe077fa6 NC |
7159 | /* If the input is the default architecture and had the default |
7160 | flags then do not bother setting the flags for the output | |
7161 | architecture, instead allow future merges to do this. If no | |
7162 | future merges ever set these flags then they will retain their | |
7163 | uninitialised values, which surprise surprise, correspond | |
252b5132 | 7164 | to the default values. */ |
fe077fa6 NC |
7165 | if (bfd_get_arch_info (ibfd)->the_default |
7166 | && elf_elfheader (ibfd)->e_flags == 0) | |
b34976b6 | 7167 | return TRUE; |
252b5132 | 7168 | |
b34976b6 | 7169 | elf_flags_init (obfd) = TRUE; |
252b5132 RH |
7170 | elf_elfheader (obfd)->e_flags = in_flags; |
7171 | ||
7172 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
7173 | && bfd_get_arch_info (obfd)->the_default) | |
7174 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); | |
7175 | ||
b34976b6 | 7176 | return TRUE; |
252b5132 RH |
7177 | } |
7178 | ||
5a6c6817 NC |
7179 | /* Determine what should happen if the input ARM architecture |
7180 | does not match the output ARM architecture. */ | |
7181 | if (! bfd_arm_merge_machines (ibfd, obfd)) | |
7182 | return FALSE; | |
e16bb312 | 7183 | |
1006ba19 | 7184 | /* Identical flags must be compatible. */ |
252b5132 | 7185 | if (in_flags == out_flags) |
b34976b6 | 7186 | return TRUE; |
252b5132 | 7187 | |
35a0f415 DJ |
7188 | /* Check to see if the input BFD actually contains any sections. If |
7189 | not, its flags may not have been initialised either, but it | |
8e3de13a | 7190 | cannot actually cause any incompatiblity. Do not short-circuit |
35a0f415 | 7191 | dynamic objects; their section list may be emptied by |
d1f161ea | 7192 | elf_link_add_object_symbols. |
35a0f415 | 7193 | |
d1f161ea NC |
7194 | Also check to see if there are no code sections in the input. |
7195 | In this case there is no need to check for code specific flags. | |
7196 | XXX - do we need to worry about floating-point format compatability | |
7197 | in data sections ? */ | |
35a0f415 | 7198 | if (!(ibfd->flags & DYNAMIC)) |
cf919dfd | 7199 | { |
35a0f415 | 7200 | bfd_boolean null_input_bfd = TRUE; |
d1f161ea | 7201 | bfd_boolean only_data_sections = TRUE; |
35a0f415 DJ |
7202 | |
7203 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
cf919dfd | 7204 | { |
35a0f415 DJ |
7205 | /* Ignore synthetic glue sections. */ |
7206 | if (strcmp (sec->name, ".glue_7") | |
7207 | && strcmp (sec->name, ".glue_7t")) | |
7208 | { | |
d1f161ea NC |
7209 | if ((bfd_get_section_flags (ibfd, sec) |
7210 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
7211 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
7212 | only_data_sections = FALSE; | |
7213 | ||
35a0f415 DJ |
7214 | null_input_bfd = FALSE; |
7215 | break; | |
7216 | } | |
cf919dfd | 7217 | } |
d1f161ea NC |
7218 | |
7219 | if (null_input_bfd || only_data_sections) | |
35a0f415 | 7220 | return TRUE; |
cf919dfd | 7221 | } |
cf919dfd | 7222 | |
252b5132 | 7223 | /* Complain about various flag mismatches. */ |
3a4a14e9 PB |
7224 | if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags), |
7225 | EF_ARM_EABI_VERSION (out_flags))) | |
fc830a83 | 7226 | { |
d003868e | 7227 | _bfd_error_handler |
3656d5e3 | 7228 | (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"), |
d003868e AM |
7229 | ibfd, obfd, |
7230 | (in_flags & EF_ARM_EABIMASK) >> 24, | |
7231 | (out_flags & EF_ARM_EABIMASK) >> 24); | |
b34976b6 | 7232 | return FALSE; |
fc830a83 | 7233 | } |
252b5132 | 7234 | |
1006ba19 | 7235 | /* Not sure what needs to be checked for EABI versions >= 1. */ |
00a97672 RS |
7236 | /* VxWorks libraries do not use these flags. */ |
7237 | if (get_elf_backend_data (obfd) != &elf32_arm_vxworks_bed | |
7238 | && get_elf_backend_data (ibfd) != &elf32_arm_vxworks_bed | |
7239 | && EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN) | |
1006ba19 | 7240 | { |
fd2ec330 | 7241 | if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26)) |
1006ba19 | 7242 | { |
d003868e AM |
7243 | _bfd_error_handler |
7244 | (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"), | |
7245 | ibfd, obfd, | |
7246 | in_flags & EF_ARM_APCS_26 ? 26 : 32, | |
7247 | out_flags & EF_ARM_APCS_26 ? 26 : 32); | |
b34976b6 | 7248 | flags_compatible = FALSE; |
1006ba19 | 7249 | } |
252b5132 | 7250 | |
fd2ec330 | 7251 | if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT)) |
1006ba19 | 7252 | { |
5eefb65f | 7253 | if (in_flags & EF_ARM_APCS_FLOAT) |
d003868e AM |
7254 | _bfd_error_handler |
7255 | (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"), | |
7256 | ibfd, obfd); | |
5eefb65f | 7257 | else |
d003868e AM |
7258 | _bfd_error_handler |
7259 | (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"), | |
7260 | ibfd, obfd); | |
63b0f745 | 7261 | |
b34976b6 | 7262 | flags_compatible = FALSE; |
1006ba19 | 7263 | } |
252b5132 | 7264 | |
96a846ea | 7265 | if ((in_flags & EF_ARM_VFP_FLOAT) != (out_flags & EF_ARM_VFP_FLOAT)) |
1006ba19 | 7266 | { |
96a846ea | 7267 | if (in_flags & EF_ARM_VFP_FLOAT) |
d003868e AM |
7268 | _bfd_error_handler |
7269 | (_("ERROR: %B uses VFP instructions, whereas %B does not"), | |
7270 | ibfd, obfd); | |
5eefb65f | 7271 | else |
d003868e AM |
7272 | _bfd_error_handler |
7273 | (_("ERROR: %B uses FPA instructions, whereas %B does not"), | |
7274 | ibfd, obfd); | |
fde78edd NC |
7275 | |
7276 | flags_compatible = FALSE; | |
7277 | } | |
7278 | ||
7279 | if ((in_flags & EF_ARM_MAVERICK_FLOAT) != (out_flags & EF_ARM_MAVERICK_FLOAT)) | |
7280 | { | |
7281 | if (in_flags & EF_ARM_MAVERICK_FLOAT) | |
d003868e AM |
7282 | _bfd_error_handler |
7283 | (_("ERROR: %B uses Maverick instructions, whereas %B does not"), | |
7284 | ibfd, obfd); | |
fde78edd | 7285 | else |
d003868e AM |
7286 | _bfd_error_handler |
7287 | (_("ERROR: %B does not use Maverick instructions, whereas %B does"), | |
7288 | ibfd, obfd); | |
63b0f745 | 7289 | |
b34976b6 | 7290 | flags_compatible = FALSE; |
1006ba19 | 7291 | } |
96a846ea RE |
7292 | |
7293 | #ifdef EF_ARM_SOFT_FLOAT | |
7294 | if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT)) | |
7295 | { | |
7296 | /* We can allow interworking between code that is VFP format | |
7297 | layout, and uses either soft float or integer regs for | |
7298 | passing floating point arguments and results. We already | |
7299 | know that the APCS_FLOAT flags match; similarly for VFP | |
7300 | flags. */ | |
7301 | if ((in_flags & EF_ARM_APCS_FLOAT) != 0 | |
7302 | || (in_flags & EF_ARM_VFP_FLOAT) == 0) | |
7303 | { | |
7304 | if (in_flags & EF_ARM_SOFT_FLOAT) | |
d003868e AM |
7305 | _bfd_error_handler |
7306 | (_("ERROR: %B uses software FP, whereas %B uses hardware FP"), | |
7307 | ibfd, obfd); | |
96a846ea | 7308 | else |
d003868e AM |
7309 | _bfd_error_handler |
7310 | (_("ERROR: %B uses hardware FP, whereas %B uses software FP"), | |
7311 | ibfd, obfd); | |
96a846ea | 7312 | |
b34976b6 | 7313 | flags_compatible = FALSE; |
96a846ea RE |
7314 | } |
7315 | } | |
ee43f35e | 7316 | #endif |
252b5132 | 7317 | |
1006ba19 | 7318 | /* Interworking mismatch is only a warning. */ |
fd2ec330 | 7319 | if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK)) |
8f615d07 | 7320 | { |
e3c8793a NC |
7321 | if (in_flags & EF_ARM_INTERWORK) |
7322 | { | |
d003868e AM |
7323 | _bfd_error_handler |
7324 | (_("Warning: %B supports interworking, whereas %B does not"), | |
7325 | ibfd, obfd); | |
e3c8793a NC |
7326 | } |
7327 | else | |
7328 | { | |
d003868e AM |
7329 | _bfd_error_handler |
7330 | (_("Warning: %B does not support interworking, whereas %B does"), | |
7331 | ibfd, obfd); | |
e3c8793a | 7332 | } |
8f615d07 | 7333 | } |
252b5132 | 7334 | } |
63b0f745 | 7335 | |
1006ba19 | 7336 | return flags_compatible; |
252b5132 RH |
7337 | } |
7338 | ||
9b485d32 NC |
7339 | /* Display the flags field. */ |
7340 | ||
b34976b6 | 7341 | static bfd_boolean |
57e8b36a | 7342 | elf32_arm_print_private_bfd_data (bfd *abfd, void * ptr) |
252b5132 | 7343 | { |
fc830a83 NC |
7344 | FILE * file = (FILE *) ptr; |
7345 | unsigned long flags; | |
252b5132 RH |
7346 | |
7347 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
7348 | ||
7349 | /* Print normal ELF private data. */ | |
7350 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
7351 | ||
fc830a83 | 7352 | flags = elf_elfheader (abfd)->e_flags; |
9b485d32 NC |
7353 | /* Ignore init flag - it may not be set, despite the flags field |
7354 | containing valid data. */ | |
252b5132 RH |
7355 | |
7356 | /* xgettext:c-format */ | |
9b485d32 | 7357 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); |
252b5132 | 7358 | |
fc830a83 NC |
7359 | switch (EF_ARM_EABI_VERSION (flags)) |
7360 | { | |
7361 | case EF_ARM_EABI_UNKNOWN: | |
4cc11e76 | 7362 | /* The following flag bits are GNU extensions and not part of the |
fc830a83 NC |
7363 | official ARM ELF extended ABI. Hence they are only decoded if |
7364 | the EABI version is not set. */ | |
fd2ec330 | 7365 | if (flags & EF_ARM_INTERWORK) |
9b485d32 | 7366 | fprintf (file, _(" [interworking enabled]")); |
9a5aca8c | 7367 | |
fd2ec330 | 7368 | if (flags & EF_ARM_APCS_26) |
6c571f00 | 7369 | fprintf (file, " [APCS-26]"); |
fc830a83 | 7370 | else |
6c571f00 | 7371 | fprintf (file, " [APCS-32]"); |
9a5aca8c | 7372 | |
96a846ea RE |
7373 | if (flags & EF_ARM_VFP_FLOAT) |
7374 | fprintf (file, _(" [VFP float format]")); | |
fde78edd NC |
7375 | else if (flags & EF_ARM_MAVERICK_FLOAT) |
7376 | fprintf (file, _(" [Maverick float format]")); | |
96a846ea RE |
7377 | else |
7378 | fprintf (file, _(" [FPA float format]")); | |
7379 | ||
fd2ec330 | 7380 | if (flags & EF_ARM_APCS_FLOAT) |
9b485d32 | 7381 | fprintf (file, _(" [floats passed in float registers]")); |
9a5aca8c | 7382 | |
fd2ec330 | 7383 | if (flags & EF_ARM_PIC) |
9b485d32 | 7384 | fprintf (file, _(" [position independent]")); |
fc830a83 | 7385 | |
fd2ec330 | 7386 | if (flags & EF_ARM_NEW_ABI) |
9b485d32 | 7387 | fprintf (file, _(" [new ABI]")); |
9a5aca8c | 7388 | |
fd2ec330 | 7389 | if (flags & EF_ARM_OLD_ABI) |
9b485d32 | 7390 | fprintf (file, _(" [old ABI]")); |
9a5aca8c | 7391 | |
fd2ec330 | 7392 | if (flags & EF_ARM_SOFT_FLOAT) |
9b485d32 | 7393 | fprintf (file, _(" [software FP]")); |
9a5aca8c | 7394 | |
96a846ea RE |
7395 | flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT |
7396 | | EF_ARM_PIC | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI | |
fde78edd NC |
7397 | | EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT |
7398 | | EF_ARM_MAVERICK_FLOAT); | |
fc830a83 | 7399 | break; |
9a5aca8c | 7400 | |
fc830a83 | 7401 | case EF_ARM_EABI_VER1: |
9b485d32 | 7402 | fprintf (file, _(" [Version1 EABI]")); |
9a5aca8c | 7403 | |
fc830a83 | 7404 | if (flags & EF_ARM_SYMSARESORTED) |
9b485d32 | 7405 | fprintf (file, _(" [sorted symbol table]")); |
fc830a83 | 7406 | else |
9b485d32 | 7407 | fprintf (file, _(" [unsorted symbol table]")); |
9a5aca8c | 7408 | |
fc830a83 NC |
7409 | flags &= ~ EF_ARM_SYMSARESORTED; |
7410 | break; | |
9a5aca8c | 7411 | |
fd2ec330 PB |
7412 | case EF_ARM_EABI_VER2: |
7413 | fprintf (file, _(" [Version2 EABI]")); | |
7414 | ||
7415 | if (flags & EF_ARM_SYMSARESORTED) | |
7416 | fprintf (file, _(" [sorted symbol table]")); | |
7417 | else | |
7418 | fprintf (file, _(" [unsorted symbol table]")); | |
7419 | ||
7420 | if (flags & EF_ARM_DYNSYMSUSESEGIDX) | |
7421 | fprintf (file, _(" [dynamic symbols use segment index]")); | |
7422 | ||
7423 | if (flags & EF_ARM_MAPSYMSFIRST) | |
7424 | fprintf (file, _(" [mapping symbols precede others]")); | |
7425 | ||
99e4ae17 | 7426 | flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX |
fd2ec330 PB |
7427 | | EF_ARM_MAPSYMSFIRST); |
7428 | break; | |
7429 | ||
d507cf36 PB |
7430 | case EF_ARM_EABI_VER3: |
7431 | fprintf (file, _(" [Version3 EABI]")); | |
8cb51566 PB |
7432 | break; |
7433 | ||
7434 | case EF_ARM_EABI_VER4: | |
7435 | fprintf (file, _(" [Version4 EABI]")); | |
3a4a14e9 | 7436 | goto eabi; |
d507cf36 | 7437 | |
3a4a14e9 PB |
7438 | case EF_ARM_EABI_VER5: |
7439 | fprintf (file, _(" [Version5 EABI]")); | |
7440 | eabi: | |
d507cf36 PB |
7441 | if (flags & EF_ARM_BE8) |
7442 | fprintf (file, _(" [BE8]")); | |
7443 | ||
7444 | if (flags & EF_ARM_LE8) | |
7445 | fprintf (file, _(" [LE8]")); | |
7446 | ||
7447 | flags &= ~(EF_ARM_LE8 | EF_ARM_BE8); | |
7448 | break; | |
7449 | ||
fc830a83 | 7450 | default: |
9b485d32 | 7451 | fprintf (file, _(" <EABI version unrecognised>")); |
fc830a83 NC |
7452 | break; |
7453 | } | |
252b5132 | 7454 | |
fc830a83 | 7455 | flags &= ~ EF_ARM_EABIMASK; |
252b5132 | 7456 | |
fc830a83 | 7457 | if (flags & EF_ARM_RELEXEC) |
9b485d32 | 7458 | fprintf (file, _(" [relocatable executable]")); |
252b5132 | 7459 | |
fc830a83 | 7460 | if (flags & EF_ARM_HASENTRY) |
9b485d32 | 7461 | fprintf (file, _(" [has entry point]")); |
252b5132 | 7462 | |
fc830a83 NC |
7463 | flags &= ~ (EF_ARM_RELEXEC | EF_ARM_HASENTRY); |
7464 | ||
7465 | if (flags) | |
9b485d32 | 7466 | fprintf (file, _("<Unrecognised flag bits set>")); |
9a5aca8c | 7467 | |
252b5132 RH |
7468 | fputc ('\n', file); |
7469 | ||
b34976b6 | 7470 | return TRUE; |
252b5132 RH |
7471 | } |
7472 | ||
7473 | static int | |
57e8b36a | 7474 | elf32_arm_get_symbol_type (Elf_Internal_Sym * elf_sym, int type) |
252b5132 | 7475 | { |
2f0ca46a NC |
7476 | switch (ELF_ST_TYPE (elf_sym->st_info)) |
7477 | { | |
7478 | case STT_ARM_TFUNC: | |
7479 | return ELF_ST_TYPE (elf_sym->st_info); | |
ce855c42 | 7480 | |
2f0ca46a NC |
7481 | case STT_ARM_16BIT: |
7482 | /* If the symbol is not an object, return the STT_ARM_16BIT flag. | |
7483 | This allows us to distinguish between data used by Thumb instructions | |
7484 | and non-data (which is probably code) inside Thumb regions of an | |
7485 | executable. */ | |
1a0eb693 | 7486 | if (type != STT_OBJECT && type != STT_TLS) |
2f0ca46a NC |
7487 | return ELF_ST_TYPE (elf_sym->st_info); |
7488 | break; | |
9a5aca8c | 7489 | |
ce855c42 NC |
7490 | default: |
7491 | break; | |
2f0ca46a NC |
7492 | } |
7493 | ||
7494 | return type; | |
252b5132 | 7495 | } |
f21f3fe0 | 7496 | |
252b5132 | 7497 | static asection * |
07adf181 AM |
7498 | elf32_arm_gc_mark_hook (asection *sec, |
7499 | struct bfd_link_info *info, | |
7500 | Elf_Internal_Rela *rel, | |
7501 | struct elf_link_hash_entry *h, | |
7502 | Elf_Internal_Sym *sym) | |
252b5132 RH |
7503 | { |
7504 | if (h != NULL) | |
07adf181 | 7505 | switch (ELF32_R_TYPE (rel->r_info)) |
252b5132 RH |
7506 | { |
7507 | case R_ARM_GNU_VTINHERIT: | |
7508 | case R_ARM_GNU_VTENTRY: | |
07adf181 AM |
7509 | return NULL; |
7510 | } | |
9ad5cbcf | 7511 | |
07adf181 | 7512 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
252b5132 RH |
7513 | } |
7514 | ||
780a67af NC |
7515 | /* Update the got entry reference counts for the section being removed. */ |
7516 | ||
b34976b6 | 7517 | static bfd_boolean |
ba93b8ac DJ |
7518 | elf32_arm_gc_sweep_hook (bfd * abfd, |
7519 | struct bfd_link_info * info, | |
7520 | asection * sec, | |
7521 | const Elf_Internal_Rela * relocs) | |
252b5132 | 7522 | { |
5e681ec4 PB |
7523 | Elf_Internal_Shdr *symtab_hdr; |
7524 | struct elf_link_hash_entry **sym_hashes; | |
7525 | bfd_signed_vma *local_got_refcounts; | |
7526 | const Elf_Internal_Rela *rel, *relend; | |
eb043451 PB |
7527 | struct elf32_arm_link_hash_table * globals; |
7528 | ||
7dda2462 TG |
7529 | if (info->relocatable) |
7530 | return TRUE; | |
7531 | ||
eb043451 | 7532 | globals = elf32_arm_hash_table (info); |
5e681ec4 PB |
7533 | |
7534 | elf_section_data (sec)->local_dynrel = NULL; | |
7535 | ||
0ffa91dd | 7536 | symtab_hdr = & elf_symtab_hdr (abfd); |
5e681ec4 PB |
7537 | sym_hashes = elf_sym_hashes (abfd); |
7538 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
7539 | ||
bd97cb95 DJ |
7540 | check_use_blx(globals); |
7541 | ||
5e681ec4 PB |
7542 | relend = relocs + sec->reloc_count; |
7543 | for (rel = relocs; rel < relend; rel++) | |
eb043451 | 7544 | { |
3eb128b2 AM |
7545 | unsigned long r_symndx; |
7546 | struct elf_link_hash_entry *h = NULL; | |
eb043451 | 7547 | int r_type; |
5e681ec4 | 7548 | |
3eb128b2 AM |
7549 | r_symndx = ELF32_R_SYM (rel->r_info); |
7550 | if (r_symndx >= symtab_hdr->sh_info) | |
7551 | { | |
7552 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
7553 | while (h->root.type == bfd_link_hash_indirect | |
7554 | || h->root.type == bfd_link_hash_warning) | |
7555 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7556 | } | |
7557 | ||
eb043451 | 7558 | r_type = ELF32_R_TYPE (rel->r_info); |
eb043451 | 7559 | r_type = arm_real_reloc_type (globals, r_type); |
eb043451 PB |
7560 | switch (r_type) |
7561 | { | |
7562 | case R_ARM_GOT32: | |
eb043451 | 7563 | case R_ARM_GOT_PREL: |
ba93b8ac DJ |
7564 | case R_ARM_TLS_GD32: |
7565 | case R_ARM_TLS_IE32: | |
3eb128b2 | 7566 | if (h != NULL) |
eb043451 | 7567 | { |
eb043451 PB |
7568 | if (h->got.refcount > 0) |
7569 | h->got.refcount -= 1; | |
7570 | } | |
7571 | else if (local_got_refcounts != NULL) | |
7572 | { | |
7573 | if (local_got_refcounts[r_symndx] > 0) | |
7574 | local_got_refcounts[r_symndx] -= 1; | |
7575 | } | |
7576 | break; | |
7577 | ||
ba93b8ac DJ |
7578 | case R_ARM_TLS_LDM32: |
7579 | elf32_arm_hash_table (info)->tls_ldm_got.refcount -= 1; | |
7580 | break; | |
7581 | ||
eb043451 | 7582 | case R_ARM_ABS32: |
bb224fc3 | 7583 | case R_ARM_ABS32_NOI: |
eb043451 | 7584 | case R_ARM_REL32: |
bb224fc3 | 7585 | case R_ARM_REL32_NOI: |
eb043451 PB |
7586 | case R_ARM_PC24: |
7587 | case R_ARM_PLT32: | |
5b5bb741 PB |
7588 | case R_ARM_CALL: |
7589 | case R_ARM_JUMP24: | |
eb043451 | 7590 | case R_ARM_PREL31: |
c19d1205 | 7591 | case R_ARM_THM_CALL: |
bd97cb95 DJ |
7592 | case R_ARM_THM_JUMP24: |
7593 | case R_ARM_THM_JUMP19: | |
b6895b4f PB |
7594 | case R_ARM_MOVW_ABS_NC: |
7595 | case R_ARM_MOVT_ABS: | |
7596 | case R_ARM_MOVW_PREL_NC: | |
7597 | case R_ARM_MOVT_PREL: | |
7598 | case R_ARM_THM_MOVW_ABS_NC: | |
7599 | case R_ARM_THM_MOVT_ABS: | |
7600 | case R_ARM_THM_MOVW_PREL_NC: | |
7601 | case R_ARM_THM_MOVT_PREL: | |
b7693d02 DJ |
7602 | /* Should the interworking branches be here also? */ |
7603 | ||
3eb128b2 | 7604 | if (h != NULL) |
eb043451 PB |
7605 | { |
7606 | struct elf32_arm_link_hash_entry *eh; | |
7607 | struct elf32_arm_relocs_copied **pp; | |
7608 | struct elf32_arm_relocs_copied *p; | |
5e681ec4 | 7609 | |
b7693d02 | 7610 | eh = (struct elf32_arm_link_hash_entry *) h; |
5e681ec4 | 7611 | |
eb043451 | 7612 | if (h->plt.refcount > 0) |
b7693d02 DJ |
7613 | { |
7614 | h->plt.refcount -= 1; | |
bd97cb95 DJ |
7615 | if (r_type == R_ARM_THM_CALL) |
7616 | eh->plt_maybe_thumb_refcount--; | |
7617 | ||
7618 | if (r_type == R_ARM_THM_JUMP24 | |
7619 | || r_type == R_ARM_THM_JUMP19) | |
b7693d02 DJ |
7620 | eh->plt_thumb_refcount--; |
7621 | } | |
5e681ec4 | 7622 | |
eb043451 | 7623 | if (r_type == R_ARM_ABS32 |
bb224fc3 MS |
7624 | || r_type == R_ARM_REL32 |
7625 | || r_type == R_ARM_ABS32_NOI | |
7626 | || r_type == R_ARM_REL32_NOI) | |
eb043451 | 7627 | { |
eb043451 PB |
7628 | for (pp = &eh->relocs_copied; (p = *pp) != NULL; |
7629 | pp = &p->next) | |
7630 | if (p->section == sec) | |
7631 | { | |
7632 | p->count -= 1; | |
bb224fc3 MS |
7633 | if (ELF32_R_TYPE (rel->r_info) == R_ARM_REL32 |
7634 | || ELF32_R_TYPE (rel->r_info) == R_ARM_REL32_NOI) | |
ba93b8ac | 7635 | p->pc_count -= 1; |
eb043451 PB |
7636 | if (p->count == 0) |
7637 | *pp = p->next; | |
7638 | break; | |
7639 | } | |
7640 | } | |
7641 | } | |
7642 | break; | |
5e681ec4 | 7643 | |
eb043451 PB |
7644 | default: |
7645 | break; | |
7646 | } | |
7647 | } | |
5e681ec4 | 7648 | |
b34976b6 | 7649 | return TRUE; |
252b5132 RH |
7650 | } |
7651 | ||
780a67af NC |
7652 | /* Look through the relocs for a section during the first phase. */ |
7653 | ||
b34976b6 | 7654 | static bfd_boolean |
57e8b36a NC |
7655 | elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info, |
7656 | asection *sec, const Elf_Internal_Rela *relocs) | |
252b5132 | 7657 | { |
b34976b6 AM |
7658 | Elf_Internal_Shdr *symtab_hdr; |
7659 | struct elf_link_hash_entry **sym_hashes; | |
b34976b6 AM |
7660 | const Elf_Internal_Rela *rel; |
7661 | const Elf_Internal_Rela *rel_end; | |
7662 | bfd *dynobj; | |
5e681ec4 | 7663 | asection *sreloc; |
b34976b6 | 7664 | bfd_vma *local_got_offsets; |
5e681ec4 | 7665 | struct elf32_arm_link_hash_table *htab; |
9a5aca8c | 7666 | |
1049f94e | 7667 | if (info->relocatable) |
b34976b6 | 7668 | return TRUE; |
9a5aca8c | 7669 | |
0ffa91dd NC |
7670 | BFD_ASSERT (is_arm_elf (abfd)); |
7671 | ||
5e681ec4 PB |
7672 | htab = elf32_arm_hash_table (info); |
7673 | sreloc = NULL; | |
9a5aca8c | 7674 | |
67687978 PB |
7675 | /* Create dynamic sections for relocatable executables so that we can |
7676 | copy relocations. */ | |
7677 | if (htab->root.is_relocatable_executable | |
7678 | && ! htab->root.dynamic_sections_created) | |
7679 | { | |
7680 | if (! _bfd_elf_link_create_dynamic_sections (abfd, info)) | |
7681 | return FALSE; | |
7682 | } | |
7683 | ||
252b5132 RH |
7684 | dynobj = elf_hash_table (info)->dynobj; |
7685 | local_got_offsets = elf_local_got_offsets (abfd); | |
f21f3fe0 | 7686 | |
0ffa91dd | 7687 | symtab_hdr = & elf_symtab_hdr (abfd); |
252b5132 | 7688 | sym_hashes = elf_sym_hashes (abfd); |
9b485d32 | 7689 | |
252b5132 RH |
7690 | rel_end = relocs + sec->reloc_count; |
7691 | for (rel = relocs; rel < rel_end; rel++) | |
7692 | { | |
7693 | struct elf_link_hash_entry *h; | |
b7693d02 | 7694 | struct elf32_arm_link_hash_entry *eh; |
252b5132 | 7695 | unsigned long r_symndx; |
eb043451 | 7696 | int r_type; |
9a5aca8c | 7697 | |
252b5132 | 7698 | r_symndx = ELF32_R_SYM (rel->r_info); |
eb043451 | 7699 | r_type = ELF32_R_TYPE (rel->r_info); |
eb043451 | 7700 | r_type = arm_real_reloc_type (htab, r_type); |
ba93b8ac DJ |
7701 | |
7702 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
7703 | { | |
7704 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd, | |
7705 | r_symndx); | |
7706 | return FALSE; | |
7707 | } | |
7708 | ||
252b5132 RH |
7709 | if (r_symndx < symtab_hdr->sh_info) |
7710 | h = NULL; | |
7711 | else | |
973a3492 L |
7712 | { |
7713 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
7714 | while (h->root.type == bfd_link_hash_indirect | |
7715 | || h->root.type == bfd_link_hash_warning) | |
7716 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7717 | } | |
9a5aca8c | 7718 | |
b7693d02 DJ |
7719 | eh = (struct elf32_arm_link_hash_entry *) h; |
7720 | ||
eb043451 | 7721 | switch (r_type) |
252b5132 | 7722 | { |
5e681ec4 | 7723 | case R_ARM_GOT32: |
eb043451 | 7724 | case R_ARM_GOT_PREL: |
ba93b8ac DJ |
7725 | case R_ARM_TLS_GD32: |
7726 | case R_ARM_TLS_IE32: | |
5e681ec4 | 7727 | /* This symbol requires a global offset table entry. */ |
ba93b8ac DJ |
7728 | { |
7729 | int tls_type, old_tls_type; | |
5e681ec4 | 7730 | |
ba93b8ac DJ |
7731 | switch (r_type) |
7732 | { | |
7733 | case R_ARM_TLS_GD32: tls_type = GOT_TLS_GD; break; | |
7734 | case R_ARM_TLS_IE32: tls_type = GOT_TLS_IE; break; | |
7735 | default: tls_type = GOT_NORMAL; break; | |
7736 | } | |
252b5132 | 7737 | |
ba93b8ac DJ |
7738 | if (h != NULL) |
7739 | { | |
7740 | h->got.refcount++; | |
7741 | old_tls_type = elf32_arm_hash_entry (h)->tls_type; | |
7742 | } | |
7743 | else | |
7744 | { | |
7745 | bfd_signed_vma *local_got_refcounts; | |
7746 | ||
7747 | /* This is a global offset table entry for a local symbol. */ | |
7748 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
7749 | if (local_got_refcounts == NULL) | |
7750 | { | |
7751 | bfd_size_type size; | |
7752 | ||
7753 | size = symtab_hdr->sh_info; | |
7754 | size *= (sizeof (bfd_signed_vma) + sizeof(char)); | |
7755 | local_got_refcounts = bfd_zalloc (abfd, size); | |
7756 | if (local_got_refcounts == NULL) | |
7757 | return FALSE; | |
7758 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
7759 | elf32_arm_local_got_tls_type (abfd) | |
7760 | = (char *) (local_got_refcounts + symtab_hdr->sh_info); | |
7761 | } | |
7762 | local_got_refcounts[r_symndx] += 1; | |
7763 | old_tls_type = elf32_arm_local_got_tls_type (abfd) [r_symndx]; | |
7764 | } | |
7765 | ||
7766 | /* We will already have issued an error message if there is a | |
7767 | TLS / non-TLS mismatch, based on the symbol type. We don't | |
7768 | support any linker relaxations. So just combine any TLS | |
7769 | types needed. */ | |
7770 | if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL | |
7771 | && tls_type != GOT_NORMAL) | |
7772 | tls_type |= old_tls_type; | |
7773 | ||
7774 | if (old_tls_type != tls_type) | |
7775 | { | |
7776 | if (h != NULL) | |
7777 | elf32_arm_hash_entry (h)->tls_type = tls_type; | |
7778 | else | |
7779 | elf32_arm_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
7780 | } | |
7781 | } | |
7782 | /* Fall through */ | |
7783 | ||
7784 | case R_ARM_TLS_LDM32: | |
7785 | if (r_type == R_ARM_TLS_LDM32) | |
7786 | htab->tls_ldm_got.refcount++; | |
7787 | /* Fall through */ | |
252b5132 | 7788 | |
c19d1205 | 7789 | case R_ARM_GOTOFF32: |
5e681ec4 PB |
7790 | case R_ARM_GOTPC: |
7791 | if (htab->sgot == NULL) | |
7792 | { | |
7793 | if (htab->root.dynobj == NULL) | |
7794 | htab->root.dynobj = abfd; | |
7795 | if (!create_got_section (htab->root.dynobj, info)) | |
7796 | return FALSE; | |
7797 | } | |
252b5132 RH |
7798 | break; |
7799 | ||
00a97672 RS |
7800 | case R_ARM_ABS12: |
7801 | /* VxWorks uses dynamic R_ARM_ABS12 relocations for | |
7802 | ldr __GOTT_INDEX__ offsets. */ | |
7803 | if (!htab->vxworks_p) | |
7804 | break; | |
7805 | /* Fall through */ | |
7806 | ||
252b5132 | 7807 | case R_ARM_ABS32: |
bb224fc3 | 7808 | case R_ARM_ABS32_NOI: |
252b5132 | 7809 | case R_ARM_REL32: |
bb224fc3 | 7810 | case R_ARM_REL32_NOI: |
252b5132 | 7811 | case R_ARM_PC24: |
7359ea65 | 7812 | case R_ARM_PLT32: |
5b5bb741 PB |
7813 | case R_ARM_CALL: |
7814 | case R_ARM_JUMP24: | |
eb043451 | 7815 | case R_ARM_PREL31: |
c19d1205 | 7816 | case R_ARM_THM_CALL: |
bd97cb95 DJ |
7817 | case R_ARM_THM_JUMP24: |
7818 | case R_ARM_THM_JUMP19: | |
b6895b4f PB |
7819 | case R_ARM_MOVW_ABS_NC: |
7820 | case R_ARM_MOVT_ABS: | |
7821 | case R_ARM_MOVW_PREL_NC: | |
7822 | case R_ARM_MOVT_PREL: | |
7823 | case R_ARM_THM_MOVW_ABS_NC: | |
7824 | case R_ARM_THM_MOVT_ABS: | |
7825 | case R_ARM_THM_MOVW_PREL_NC: | |
7826 | case R_ARM_THM_MOVT_PREL: | |
b7693d02 | 7827 | /* Should the interworking branches be listed here? */ |
7359ea65 | 7828 | if (h != NULL) |
5e681ec4 PB |
7829 | { |
7830 | /* If this reloc is in a read-only section, we might | |
7831 | need a copy reloc. We can't check reliably at this | |
7832 | stage whether the section is read-only, as input | |
7833 | sections have not yet been mapped to output sections. | |
7834 | Tentatively set the flag for now, and correct in | |
7835 | adjust_dynamic_symbol. */ | |
7359ea65 | 7836 | if (!info->shared) |
f5385ebf | 7837 | h->non_got_ref = 1; |
7359ea65 | 7838 | |
5e681ec4 | 7839 | /* We may need a .plt entry if the function this reloc |
c84cd8ee DJ |
7840 | refers to is in a different object. We can't tell for |
7841 | sure yet, because something later might force the | |
7842 | symbol local. */ | |
bb224fc3 MS |
7843 | if (r_type != R_ARM_ABS32 |
7844 | && r_type != R_ARM_REL32 | |
7845 | && r_type != R_ARM_ABS32_NOI | |
d3753b85 RS |
7846 | && r_type != R_ARM_REL32_NOI |
7847 | && r_type != R_ARM_ABS12) | |
f5385ebf | 7848 | h->needs_plt = 1; |
4f199be3 DJ |
7849 | |
7850 | /* If we create a PLT entry, this relocation will reference | |
7851 | it, even if it's an ABS32 relocation. */ | |
7852 | h->plt.refcount += 1; | |
b7693d02 | 7853 | |
bd97cb95 DJ |
7854 | /* It's too early to use htab->use_blx here, so we have to |
7855 | record possible blx references separately from | |
7856 | relocs that definitely need a thumb stub. */ | |
7857 | ||
c19d1205 | 7858 | if (r_type == R_ARM_THM_CALL) |
bd97cb95 DJ |
7859 | eh->plt_maybe_thumb_refcount += 1; |
7860 | ||
7861 | if (r_type == R_ARM_THM_JUMP24 | |
7862 | || r_type == R_ARM_THM_JUMP19) | |
b7693d02 | 7863 | eh->plt_thumb_refcount += 1; |
5e681ec4 PB |
7864 | } |
7865 | ||
67687978 PB |
7866 | /* If we are creating a shared library or relocatable executable, |
7867 | and this is a reloc against a global symbol, or a non PC | |
7868 | relative reloc against a local symbol, then we need to copy | |
7869 | the reloc into the shared library. However, if we are linking | |
7870 | with -Bsymbolic, we do not need to copy a reloc against a | |
252b5132 RH |
7871 | global symbol which is defined in an object we are |
7872 | including in the link (i.e., DEF_REGULAR is set). At | |
7873 | this point we have not seen all the input files, so it is | |
7874 | possible that DEF_REGULAR is not set now but will be set | |
7875 | later (it is never cleared). We account for that | |
7876 | possibility below by storing information in the | |
5e681ec4 | 7877 | relocs_copied field of the hash table entry. */ |
67687978 | 7878 | if ((info->shared || htab->root.is_relocatable_executable) |
5e681ec4 | 7879 | && (sec->flags & SEC_ALLOC) != 0 |
bb224fc3 | 7880 | && ((r_type == R_ARM_ABS32 || r_type == R_ARM_ABS32_NOI) |
71a976dd DJ |
7881 | || (h != NULL && ! h->needs_plt |
7882 | && (! info->symbolic || ! h->def_regular)))) | |
252b5132 | 7883 | { |
5e681ec4 PB |
7884 | struct elf32_arm_relocs_copied *p, **head; |
7885 | ||
252b5132 RH |
7886 | /* When creating a shared object, we must copy these |
7887 | reloc types into the output file. We create a reloc | |
7888 | section in dynobj and make room for this reloc. */ | |
7889 | if (sreloc == NULL) | |
7890 | { | |
7891 | const char * name; | |
7892 | ||
7893 | name = (bfd_elf_string_from_elf_section | |
7894 | (abfd, | |
7895 | elf_elfheader (abfd)->e_shstrndx, | |
7896 | elf_section_data (sec)->rel_hdr.sh_name)); | |
7897 | if (name == NULL) | |
b34976b6 | 7898 | return FALSE; |
252b5132 | 7899 | |
00a97672 | 7900 | BFD_ASSERT (reloc_section_p (htab, name, sec)); |
252b5132 RH |
7901 | |
7902 | sreloc = bfd_get_section_by_name (dynobj, name); | |
7903 | if (sreloc == NULL) | |
7904 | { | |
7905 | flagword flags; | |
7906 | ||
252b5132 RH |
7907 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
7908 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
e5a52504 MM |
7909 | if ((sec->flags & SEC_ALLOC) != 0 |
7910 | /* BPABI objects never have dynamic | |
7911 | relocations mapped. */ | |
7912 | && !htab->symbian_p) | |
252b5132 | 7913 | flags |= SEC_ALLOC | SEC_LOAD; |
3496cb2a L |
7914 | sreloc = bfd_make_section_with_flags (dynobj, |
7915 | name, | |
7916 | flags); | |
252b5132 | 7917 | if (sreloc == NULL |
252b5132 | 7918 | || ! bfd_set_section_alignment (dynobj, sreloc, 2)) |
b34976b6 | 7919 | return FALSE; |
252b5132 | 7920 | } |
5e681ec4 PB |
7921 | |
7922 | elf_section_data (sec)->sreloc = sreloc; | |
252b5132 RH |
7923 | } |
7924 | ||
5e681ec4 PB |
7925 | /* If this is a global symbol, we count the number of |
7926 | relocations we need for this symbol. */ | |
7927 | if (h != NULL) | |
252b5132 | 7928 | { |
5e681ec4 PB |
7929 | head = &((struct elf32_arm_link_hash_entry *) h)->relocs_copied; |
7930 | } | |
7931 | else | |
7932 | { | |
7933 | /* Track dynamic relocs needed for local syms too. | |
7934 | We really need local syms available to do this | |
7935 | easily. Oh well. */ | |
57e8b36a | 7936 | |
5e681ec4 | 7937 | asection *s; |
6edfbbad DJ |
7938 | void *vpp; |
7939 | ||
5e681ec4 PB |
7940 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, |
7941 | sec, r_symndx); | |
7942 | if (s == NULL) | |
7943 | return FALSE; | |
57e8b36a | 7944 | |
6edfbbad DJ |
7945 | vpp = &elf_section_data (s)->local_dynrel; |
7946 | head = (struct elf32_arm_relocs_copied **) vpp; | |
5e681ec4 | 7947 | } |
57e8b36a | 7948 | |
5e681ec4 PB |
7949 | p = *head; |
7950 | if (p == NULL || p->section != sec) | |
7951 | { | |
7952 | bfd_size_type amt = sizeof *p; | |
57e8b36a | 7953 | |
5e681ec4 | 7954 | p = bfd_alloc (htab->root.dynobj, amt); |
252b5132 | 7955 | if (p == NULL) |
5e681ec4 PB |
7956 | return FALSE; |
7957 | p->next = *head; | |
7958 | *head = p; | |
7959 | p->section = sec; | |
7960 | p->count = 0; | |
ba93b8ac | 7961 | p->pc_count = 0; |
252b5132 | 7962 | } |
57e8b36a | 7963 | |
bb224fc3 | 7964 | if (r_type == R_ARM_REL32 || r_type == R_ARM_REL32_NOI) |
ba93b8ac | 7965 | p->pc_count += 1; |
71a976dd | 7966 | p->count += 1; |
252b5132 RH |
7967 | } |
7968 | break; | |
7969 | ||
7970 | /* This relocation describes the C++ object vtable hierarchy. | |
7971 | Reconstruct it for later use during GC. */ | |
7972 | case R_ARM_GNU_VTINHERIT: | |
c152c796 | 7973 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 7974 | return FALSE; |
252b5132 | 7975 | break; |
9a5aca8c | 7976 | |
252b5132 RH |
7977 | /* This relocation describes which C++ vtable entries are actually |
7978 | used. Record for later use during GC. */ | |
7979 | case R_ARM_GNU_VTENTRY: | |
d17e0c6e JB |
7980 | BFD_ASSERT (h != NULL); |
7981 | if (h != NULL | |
7982 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 7983 | return FALSE; |
252b5132 RH |
7984 | break; |
7985 | } | |
7986 | } | |
f21f3fe0 | 7987 | |
b34976b6 | 7988 | return TRUE; |
252b5132 RH |
7989 | } |
7990 | ||
6a5bb875 PB |
7991 | /* Unwinding tables are not referenced directly. This pass marks them as |
7992 | required if the corresponding code section is marked. */ | |
7993 | ||
7994 | static bfd_boolean | |
7995 | elf32_arm_gc_mark_extra_sections(struct bfd_link_info *info, | |
7996 | elf_gc_mark_hook_fn gc_mark_hook) | |
7997 | { | |
7998 | bfd *sub; | |
7999 | Elf_Internal_Shdr **elf_shdrp; | |
8000 | bfd_boolean again; | |
8001 | ||
8002 | /* Marking EH data may cause additional code sections to be marked, | |
8003 | requiring multiple passes. */ | |
8004 | again = TRUE; | |
8005 | while (again) | |
8006 | { | |
8007 | again = FALSE; | |
8008 | for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) | |
8009 | { | |
8010 | asection *o; | |
8011 | ||
0ffa91dd | 8012 | if (! is_arm_elf (sub)) |
6a5bb875 PB |
8013 | continue; |
8014 | ||
8015 | elf_shdrp = elf_elfsections (sub); | |
8016 | for (o = sub->sections; o != NULL; o = o->next) | |
8017 | { | |
8018 | Elf_Internal_Shdr *hdr; | |
0ffa91dd | 8019 | |
6a5bb875 PB |
8020 | hdr = &elf_section_data (o)->this_hdr; |
8021 | if (hdr->sh_type == SHT_ARM_EXIDX && hdr->sh_link | |
8022 | && !o->gc_mark | |
8023 | && elf_shdrp[hdr->sh_link]->bfd_section->gc_mark) | |
8024 | { | |
8025 | again = TRUE; | |
8026 | if (!_bfd_elf_gc_mark (info, o, gc_mark_hook)) | |
8027 | return FALSE; | |
8028 | } | |
8029 | } | |
8030 | } | |
8031 | } | |
8032 | ||
8033 | return TRUE; | |
8034 | } | |
8035 | ||
3c9458e9 NC |
8036 | /* Treat mapping symbols as special target symbols. */ |
8037 | ||
8038 | static bfd_boolean | |
8039 | elf32_arm_is_target_special_symbol (bfd * abfd ATTRIBUTE_UNUSED, asymbol * sym) | |
8040 | { | |
b0796911 PB |
8041 | return bfd_is_arm_special_symbol_name (sym->name, |
8042 | BFD_ARM_SPECIAL_SYM_TYPE_ANY); | |
3c9458e9 NC |
8043 | } |
8044 | ||
0367ecfb NC |
8045 | /* This is a copy of elf_find_function() from elf.c except that |
8046 | ARM mapping symbols are ignored when looking for function names | |
8047 | and STT_ARM_TFUNC is considered to a function type. */ | |
252b5132 | 8048 | |
0367ecfb NC |
8049 | static bfd_boolean |
8050 | arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED, | |
8051 | asection * section, | |
8052 | asymbol ** symbols, | |
8053 | bfd_vma offset, | |
8054 | const char ** filename_ptr, | |
8055 | const char ** functionname_ptr) | |
8056 | { | |
8057 | const char * filename = NULL; | |
8058 | asymbol * func = NULL; | |
8059 | bfd_vma low_func = 0; | |
8060 | asymbol ** p; | |
252b5132 RH |
8061 | |
8062 | for (p = symbols; *p != NULL; p++) | |
8063 | { | |
8064 | elf_symbol_type *q; | |
8065 | ||
8066 | q = (elf_symbol_type *) *p; | |
8067 | ||
252b5132 RH |
8068 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) |
8069 | { | |
8070 | default: | |
8071 | break; | |
8072 | case STT_FILE: | |
8073 | filename = bfd_asymbol_name (&q->symbol); | |
8074 | break; | |
252b5132 RH |
8075 | case STT_FUNC: |
8076 | case STT_ARM_TFUNC: | |
9d2da7ca | 8077 | case STT_NOTYPE: |
b0796911 | 8078 | /* Skip mapping symbols. */ |
0367ecfb | 8079 | if ((q->symbol.flags & BSF_LOCAL) |
b0796911 PB |
8080 | && bfd_is_arm_special_symbol_name (q->symbol.name, |
8081 | BFD_ARM_SPECIAL_SYM_TYPE_ANY)) | |
0367ecfb NC |
8082 | continue; |
8083 | /* Fall through. */ | |
6b40fcba | 8084 | if (bfd_get_section (&q->symbol) == section |
252b5132 RH |
8085 | && q->symbol.value >= low_func |
8086 | && q->symbol.value <= offset) | |
8087 | { | |
8088 | func = (asymbol *) q; | |
8089 | low_func = q->symbol.value; | |
8090 | } | |
8091 | break; | |
8092 | } | |
8093 | } | |
8094 | ||
8095 | if (func == NULL) | |
b34976b6 | 8096 | return FALSE; |
252b5132 | 8097 | |
0367ecfb NC |
8098 | if (filename_ptr) |
8099 | *filename_ptr = filename; | |
8100 | if (functionname_ptr) | |
8101 | *functionname_ptr = bfd_asymbol_name (func); | |
8102 | ||
8103 | return TRUE; | |
8104 | } | |
8105 | ||
8106 | ||
8107 | /* Find the nearest line to a particular section and offset, for error | |
8108 | reporting. This code is a duplicate of the code in elf.c, except | |
8109 | that it uses arm_elf_find_function. */ | |
8110 | ||
8111 | static bfd_boolean | |
8112 | elf32_arm_find_nearest_line (bfd * abfd, | |
8113 | asection * section, | |
8114 | asymbol ** symbols, | |
8115 | bfd_vma offset, | |
8116 | const char ** filename_ptr, | |
8117 | const char ** functionname_ptr, | |
8118 | unsigned int * line_ptr) | |
8119 | { | |
8120 | bfd_boolean found = FALSE; | |
8121 | ||
8122 | /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */ | |
8123 | ||
8124 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
8125 | filename_ptr, functionname_ptr, | |
8126 | line_ptr, 0, | |
8127 | & elf_tdata (abfd)->dwarf2_find_line_info)) | |
8128 | { | |
8129 | if (!*functionname_ptr) | |
8130 | arm_elf_find_function (abfd, section, symbols, offset, | |
8131 | *filename_ptr ? NULL : filename_ptr, | |
8132 | functionname_ptr); | |
f21f3fe0 | 8133 | |
0367ecfb NC |
8134 | return TRUE; |
8135 | } | |
8136 | ||
8137 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
8138 | & found, filename_ptr, | |
8139 | functionname_ptr, line_ptr, | |
8140 | & elf_tdata (abfd)->line_info)) | |
8141 | return FALSE; | |
8142 | ||
8143 | if (found && (*functionname_ptr || *line_ptr)) | |
8144 | return TRUE; | |
8145 | ||
8146 | if (symbols == NULL) | |
8147 | return FALSE; | |
8148 | ||
8149 | if (! arm_elf_find_function (abfd, section, symbols, offset, | |
8150 | filename_ptr, functionname_ptr)) | |
8151 | return FALSE; | |
8152 | ||
8153 | *line_ptr = 0; | |
b34976b6 | 8154 | return TRUE; |
252b5132 RH |
8155 | } |
8156 | ||
4ab527b0 FF |
8157 | static bfd_boolean |
8158 | elf32_arm_find_inliner_info (bfd * abfd, | |
8159 | const char ** filename_ptr, | |
8160 | const char ** functionname_ptr, | |
8161 | unsigned int * line_ptr) | |
8162 | { | |
8163 | bfd_boolean found; | |
8164 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
8165 | functionname_ptr, line_ptr, | |
8166 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
8167 | return found; | |
8168 | } | |
8169 | ||
252b5132 RH |
8170 | /* Adjust a symbol defined by a dynamic object and referenced by a |
8171 | regular object. The current definition is in some section of the | |
8172 | dynamic object, but we're not including those sections. We have to | |
8173 | change the definition to something the rest of the link can | |
8174 | understand. */ | |
8175 | ||
b34976b6 | 8176 | static bfd_boolean |
57e8b36a NC |
8177 | elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info, |
8178 | struct elf_link_hash_entry * h) | |
252b5132 RH |
8179 | { |
8180 | bfd * dynobj; | |
8181 | asection * s; | |
b7693d02 | 8182 | struct elf32_arm_link_hash_entry * eh; |
67687978 | 8183 | struct elf32_arm_link_hash_table *globals; |
252b5132 | 8184 | |
67687978 | 8185 | globals = elf32_arm_hash_table (info); |
252b5132 RH |
8186 | dynobj = elf_hash_table (info)->dynobj; |
8187 | ||
8188 | /* Make sure we know what is going on here. */ | |
8189 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 8190 | && (h->needs_plt |
f6e332e6 | 8191 | || h->u.weakdef != NULL |
f5385ebf AM |
8192 | || (h->def_dynamic |
8193 | && h->ref_regular | |
8194 | && !h->def_regular))); | |
252b5132 | 8195 | |
b7693d02 DJ |
8196 | eh = (struct elf32_arm_link_hash_entry *) h; |
8197 | ||
252b5132 RH |
8198 | /* If this is a function, put it in the procedure linkage table. We |
8199 | will fill in the contents of the procedure linkage table later, | |
8200 | when we know the address of the .got section. */ | |
b7693d02 | 8201 | if (h->type == STT_FUNC || h->type == STT_ARM_TFUNC |
f5385ebf | 8202 | || h->needs_plt) |
252b5132 | 8203 | { |
5e681ec4 PB |
8204 | if (h->plt.refcount <= 0 |
8205 | || SYMBOL_CALLS_LOCAL (info, h) | |
8206 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
8207 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
8208 | { |
8209 | /* This case can occur if we saw a PLT32 reloc in an input | |
5e681ec4 PB |
8210 | file, but the symbol was never referred to by a dynamic |
8211 | object, or if all references were garbage collected. In | |
8212 | such a case, we don't actually need to build a procedure | |
8213 | linkage table, and we can just do a PC24 reloc instead. */ | |
8214 | h->plt.offset = (bfd_vma) -1; | |
b7693d02 | 8215 | eh->plt_thumb_refcount = 0; |
bd97cb95 | 8216 | eh->plt_maybe_thumb_refcount = 0; |
f5385ebf | 8217 | h->needs_plt = 0; |
252b5132 RH |
8218 | } |
8219 | ||
b34976b6 | 8220 | return TRUE; |
252b5132 | 8221 | } |
5e681ec4 | 8222 | else |
b7693d02 DJ |
8223 | { |
8224 | /* It's possible that we incorrectly decided a .plt reloc was | |
8225 | needed for an R_ARM_PC24 or similar reloc to a non-function sym | |
8226 | in check_relocs. We can't decide accurately between function | |
8227 | and non-function syms in check-relocs; Objects loaded later in | |
8228 | the link may change h->type. So fix it now. */ | |
8229 | h->plt.offset = (bfd_vma) -1; | |
8230 | eh->plt_thumb_refcount = 0; | |
bd97cb95 | 8231 | eh->plt_maybe_thumb_refcount = 0; |
b7693d02 | 8232 | } |
252b5132 RH |
8233 | |
8234 | /* If this is a weak symbol, and there is a real definition, the | |
8235 | processor independent code will have arranged for us to see the | |
8236 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 8237 | if (h->u.weakdef != NULL) |
252b5132 | 8238 | { |
f6e332e6 AM |
8239 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
8240 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
8241 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
8242 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 8243 | return TRUE; |
252b5132 RH |
8244 | } |
8245 | ||
ba93b8ac DJ |
8246 | /* If there are no non-GOT references, we do not need a copy |
8247 | relocation. */ | |
8248 | if (!h->non_got_ref) | |
8249 | return TRUE; | |
8250 | ||
252b5132 RH |
8251 | /* This is a reference to a symbol defined by a dynamic object which |
8252 | is not a function. */ | |
8253 | ||
8254 | /* If we are creating a shared library, we must presume that the | |
8255 | only references to the symbol are via the global offset table. | |
8256 | For such cases we need not do anything here; the relocations will | |
67687978 PB |
8257 | be handled correctly by relocate_section. Relocatable executables |
8258 | can reference data in shared objects directly, so we don't need to | |
8259 | do anything here. */ | |
8260 | if (info->shared || globals->root.is_relocatable_executable) | |
b34976b6 | 8261 | return TRUE; |
252b5132 | 8262 | |
909272ee AM |
8263 | if (h->size == 0) |
8264 | { | |
8265 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
8266 | h->root.root.string); | |
8267 | return TRUE; | |
8268 | } | |
8269 | ||
252b5132 RH |
8270 | /* We must allocate the symbol in our .dynbss section, which will |
8271 | become part of the .bss section of the executable. There will be | |
8272 | an entry for this symbol in the .dynsym section. The dynamic | |
8273 | object will contain position independent code, so all references | |
8274 | from the dynamic object to this symbol will go through the global | |
8275 | offset table. The dynamic linker will use the .dynsym entry to | |
8276 | determine the address it must put in the global offset table, so | |
8277 | both the dynamic object and the regular object will refer to the | |
8278 | same memory location for the variable. */ | |
252b5132 RH |
8279 | s = bfd_get_section_by_name (dynobj, ".dynbss"); |
8280 | BFD_ASSERT (s != NULL); | |
8281 | ||
8282 | /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to | |
8283 | copy the initial value out of the dynamic object and into the | |
8284 | runtime process image. We need to remember the offset into the | |
00a97672 | 8285 | .rel(a).bss section we are going to use. */ |
252b5132 RH |
8286 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
8287 | { | |
8288 | asection *srel; | |
8289 | ||
00a97672 | 8290 | srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (globals, ".bss")); |
252b5132 | 8291 | BFD_ASSERT (srel != NULL); |
00a97672 | 8292 | srel->size += RELOC_SIZE (globals); |
f5385ebf | 8293 | h->needs_copy = 1; |
252b5132 RH |
8294 | } |
8295 | ||
027297b7 | 8296 | return _bfd_elf_adjust_dynamic_copy (h, s); |
252b5132 RH |
8297 | } |
8298 | ||
5e681ec4 PB |
8299 | /* Allocate space in .plt, .got and associated reloc sections for |
8300 | dynamic relocs. */ | |
8301 | ||
8302 | static bfd_boolean | |
57e8b36a | 8303 | allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
5e681ec4 PB |
8304 | { |
8305 | struct bfd_link_info *info; | |
8306 | struct elf32_arm_link_hash_table *htab; | |
8307 | struct elf32_arm_link_hash_entry *eh; | |
8308 | struct elf32_arm_relocs_copied *p; | |
bd97cb95 | 8309 | bfd_signed_vma thumb_refs; |
5e681ec4 | 8310 | |
b7693d02 DJ |
8311 | eh = (struct elf32_arm_link_hash_entry *) h; |
8312 | ||
5e681ec4 PB |
8313 | if (h->root.type == bfd_link_hash_indirect) |
8314 | return TRUE; | |
8315 | ||
8316 | if (h->root.type == bfd_link_hash_warning) | |
8317 | /* When warning symbols are created, they **replace** the "real" | |
8318 | entry in the hash table, thus we never get to see the real | |
8319 | symbol in a hash traversal. So look at it now. */ | |
8320 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8321 | ||
8322 | info = (struct bfd_link_info *) inf; | |
8323 | htab = elf32_arm_hash_table (info); | |
8324 | ||
8325 | if (htab->root.dynamic_sections_created | |
8326 | && h->plt.refcount > 0) | |
8327 | { | |
8328 | /* Make sure this symbol is output as a dynamic symbol. | |
8329 | Undefined weak syms won't yet be marked as dynamic. */ | |
8330 | if (h->dynindx == -1 | |
f5385ebf | 8331 | && !h->forced_local) |
5e681ec4 | 8332 | { |
c152c796 | 8333 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
8334 | return FALSE; |
8335 | } | |
8336 | ||
8337 | if (info->shared | |
7359ea65 | 8338 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
5e681ec4 PB |
8339 | { |
8340 | asection *s = htab->splt; | |
8341 | ||
8342 | /* If this is the first .plt entry, make room for the special | |
8343 | first entry. */ | |
eea6121a | 8344 | if (s->size == 0) |
e5a52504 | 8345 | s->size += htab->plt_header_size; |
5e681ec4 | 8346 | |
eea6121a | 8347 | h->plt.offset = s->size; |
5e681ec4 | 8348 | |
b7693d02 DJ |
8349 | /* If we will insert a Thumb trampoline before this PLT, leave room |
8350 | for it. */ | |
bd97cb95 DJ |
8351 | thumb_refs = eh->plt_thumb_refcount; |
8352 | if (!htab->use_blx) | |
8353 | thumb_refs += eh->plt_maybe_thumb_refcount; | |
8354 | ||
8355 | if (thumb_refs > 0) | |
b7693d02 DJ |
8356 | { |
8357 | h->plt.offset += PLT_THUMB_STUB_SIZE; | |
8358 | s->size += PLT_THUMB_STUB_SIZE; | |
8359 | } | |
8360 | ||
5e681ec4 PB |
8361 | /* If this symbol is not defined in a regular file, and we are |
8362 | not generating a shared library, then set the symbol to this | |
8363 | location in the .plt. This is required to make function | |
8364 | pointers compare as equal between the normal executable and | |
8365 | the shared library. */ | |
8366 | if (! info->shared | |
f5385ebf | 8367 | && !h->def_regular) |
5e681ec4 PB |
8368 | { |
8369 | h->root.u.def.section = s; | |
8370 | h->root.u.def.value = h->plt.offset; | |
b7693d02 DJ |
8371 | |
8372 | /* Make sure the function is not marked as Thumb, in case | |
8373 | it is the target of an ABS32 relocation, which will | |
8374 | point to the PLT entry. */ | |
8375 | if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC) | |
8376 | h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC); | |
5e681ec4 PB |
8377 | } |
8378 | ||
8379 | /* Make room for this entry. */ | |
e5a52504 | 8380 | s->size += htab->plt_entry_size; |
5e681ec4 | 8381 | |
e5a52504 | 8382 | if (!htab->symbian_p) |
b7693d02 DJ |
8383 | { |
8384 | /* We also need to make an entry in the .got.plt section, which | |
8385 | will be placed in the .got section by the linker script. */ | |
8386 | eh->plt_got_offset = htab->sgotplt->size; | |
8387 | htab->sgotplt->size += 4; | |
8388 | } | |
5e681ec4 | 8389 | |
00a97672 RS |
8390 | /* We also need to make an entry in the .rel(a).plt section. */ |
8391 | htab->srelplt->size += RELOC_SIZE (htab); | |
8392 | ||
8393 | /* VxWorks executables have a second set of relocations for | |
8394 | each PLT entry. They go in a separate relocation section, | |
8395 | which is processed by the kernel loader. */ | |
8396 | if (htab->vxworks_p && !info->shared) | |
8397 | { | |
8398 | /* There is a relocation for the initial PLT entry: | |
8399 | an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */ | |
8400 | if (h->plt.offset == htab->plt_header_size) | |
8401 | htab->srelplt2->size += RELOC_SIZE (htab); | |
8402 | ||
8403 | /* There are two extra relocations for each subsequent | |
8404 | PLT entry: an R_ARM_32 relocation for the GOT entry, | |
8405 | and an R_ARM_32 relocation for the PLT entry. */ | |
8406 | htab->srelplt2->size += RELOC_SIZE (htab) * 2; | |
8407 | } | |
5e681ec4 PB |
8408 | } |
8409 | else | |
8410 | { | |
8411 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 8412 | h->needs_plt = 0; |
5e681ec4 PB |
8413 | } |
8414 | } | |
8415 | else | |
8416 | { | |
8417 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 8418 | h->needs_plt = 0; |
5e681ec4 PB |
8419 | } |
8420 | ||
8421 | if (h->got.refcount > 0) | |
8422 | { | |
8423 | asection *s; | |
8424 | bfd_boolean dyn; | |
ba93b8ac DJ |
8425 | int tls_type = elf32_arm_hash_entry (h)->tls_type; |
8426 | int indx; | |
5e681ec4 PB |
8427 | |
8428 | /* Make sure this symbol is output as a dynamic symbol. | |
8429 | Undefined weak syms won't yet be marked as dynamic. */ | |
8430 | if (h->dynindx == -1 | |
f5385ebf | 8431 | && !h->forced_local) |
5e681ec4 | 8432 | { |
c152c796 | 8433 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
8434 | return FALSE; |
8435 | } | |
8436 | ||
e5a52504 MM |
8437 | if (!htab->symbian_p) |
8438 | { | |
8439 | s = htab->sgot; | |
8440 | h->got.offset = s->size; | |
ba93b8ac DJ |
8441 | |
8442 | if (tls_type == GOT_UNKNOWN) | |
8443 | abort (); | |
8444 | ||
8445 | if (tls_type == GOT_NORMAL) | |
8446 | /* Non-TLS symbols need one GOT slot. */ | |
8447 | s->size += 4; | |
8448 | else | |
8449 | { | |
8450 | if (tls_type & GOT_TLS_GD) | |
8451 | /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */ | |
8452 | s->size += 8; | |
8453 | if (tls_type & GOT_TLS_IE) | |
8454 | /* R_ARM_TLS_IE32 needs one GOT slot. */ | |
8455 | s->size += 4; | |
8456 | } | |
8457 | ||
e5a52504 | 8458 | dyn = htab->root.dynamic_sections_created; |
ba93b8ac DJ |
8459 | |
8460 | indx = 0; | |
8461 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
8462 | && (!info->shared | |
8463 | || !SYMBOL_REFERENCES_LOCAL (info, h))) | |
8464 | indx = h->dynindx; | |
8465 | ||
8466 | if (tls_type != GOT_NORMAL | |
8467 | && (info->shared || indx != 0) | |
8468 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
8469 | || h->root.type != bfd_link_hash_undefweak)) | |
8470 | { | |
8471 | if (tls_type & GOT_TLS_IE) | |
00a97672 | 8472 | htab->srelgot->size += RELOC_SIZE (htab); |
ba93b8ac DJ |
8473 | |
8474 | if (tls_type & GOT_TLS_GD) | |
00a97672 | 8475 | htab->srelgot->size += RELOC_SIZE (htab); |
ba93b8ac DJ |
8476 | |
8477 | if ((tls_type & GOT_TLS_GD) && indx != 0) | |
00a97672 | 8478 | htab->srelgot->size += RELOC_SIZE (htab); |
ba93b8ac DJ |
8479 | } |
8480 | else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
8481 | || h->root.type != bfd_link_hash_undefweak) | |
8482 | && (info->shared | |
8483 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
00a97672 | 8484 | htab->srelgot->size += RELOC_SIZE (htab); |
e5a52504 | 8485 | } |
5e681ec4 PB |
8486 | } |
8487 | else | |
8488 | h->got.offset = (bfd_vma) -1; | |
8489 | ||
a4fd1a8e PB |
8490 | /* Allocate stubs for exported Thumb functions on v4t. */ |
8491 | if (!htab->use_blx && h->dynindx != -1 | |
0eaedd0e | 8492 | && h->def_regular |
a4fd1a8e PB |
8493 | && ELF_ST_TYPE (h->type) == STT_ARM_TFUNC |
8494 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
8495 | { | |
8496 | struct elf_link_hash_entry * th; | |
8497 | struct bfd_link_hash_entry * bh; | |
8498 | struct elf_link_hash_entry * myh; | |
8499 | char name[1024]; | |
8500 | asection *s; | |
8501 | bh = NULL; | |
8502 | /* Create a new symbol to regist the real location of the function. */ | |
8503 | s = h->root.u.def.section; | |
8504 | sprintf(name, "__real_%s", h->root.root.string); | |
8505 | _bfd_generic_link_add_one_symbol (info, s->owner, | |
8506 | name, BSF_GLOBAL, s, | |
8507 | h->root.u.def.value, | |
8508 | NULL, TRUE, FALSE, &bh); | |
8509 | ||
8510 | myh = (struct elf_link_hash_entry *) bh; | |
8511 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC); | |
8512 | myh->forced_local = 1; | |
8513 | eh->export_glue = myh; | |
8514 | th = record_arm_to_thumb_glue (info, h); | |
8515 | /* Point the symbol at the stub. */ | |
8516 | h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC); | |
8517 | h->root.u.def.section = th->root.u.def.section; | |
8518 | h->root.u.def.value = th->root.u.def.value & ~1; | |
8519 | } | |
8520 | ||
5e681ec4 PB |
8521 | if (eh->relocs_copied == NULL) |
8522 | return TRUE; | |
8523 | ||
8524 | /* In the shared -Bsymbolic case, discard space allocated for | |
8525 | dynamic pc-relative relocs against symbols which turn out to be | |
8526 | defined in regular objects. For the normal shared case, discard | |
8527 | space for pc-relative relocs that have become local due to symbol | |
8528 | visibility changes. */ | |
8529 | ||
67687978 | 8530 | if (info->shared || htab->root.is_relocatable_executable) |
5e681ec4 | 8531 | { |
7bdca076 | 8532 | /* The only relocs that use pc_count are R_ARM_REL32 and |
bb224fc3 MS |
8533 | R_ARM_REL32_NOI, which will appear on something like |
8534 | ".long foo - .". We want calls to protected symbols to resolve | |
8535 | directly to the function rather than going via the plt. If people | |
8536 | want function pointer comparisons to work as expected then they | |
8537 | should avoid writing assembly like ".long foo - .". */ | |
ba93b8ac DJ |
8538 | if (SYMBOL_CALLS_LOCAL (info, h)) |
8539 | { | |
8540 | struct elf32_arm_relocs_copied **pp; | |
8541 | ||
8542 | for (pp = &eh->relocs_copied; (p = *pp) != NULL; ) | |
8543 | { | |
8544 | p->count -= p->pc_count; | |
8545 | p->pc_count = 0; | |
8546 | if (p->count == 0) | |
8547 | *pp = p->next; | |
8548 | else | |
8549 | pp = &p->next; | |
8550 | } | |
8551 | } | |
8552 | ||
8553 | /* Also discard relocs on undefined weak syms with non-default | |
7359ea65 | 8554 | visibility. */ |
22d606e9 | 8555 | if (eh->relocs_copied != NULL |
5e681ec4 | 8556 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 AM |
8557 | { |
8558 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
8559 | eh->relocs_copied = NULL; | |
8560 | ||
8561 | /* Make sure undefined weak symbols are output as a dynamic | |
8562 | symbol in PIEs. */ | |
8563 | else if (h->dynindx == -1 | |
8564 | && !h->forced_local) | |
8565 | { | |
8566 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
8567 | return FALSE; | |
8568 | } | |
8569 | } | |
8570 | ||
67687978 PB |
8571 | else if (htab->root.is_relocatable_executable && h->dynindx == -1 |
8572 | && h->root.type == bfd_link_hash_new) | |
8573 | { | |
8574 | /* Output absolute symbols so that we can create relocations | |
8575 | against them. For normal symbols we output a relocation | |
8576 | against the section that contains them. */ | |
8577 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
8578 | return FALSE; | |
8579 | } | |
8580 | ||
5e681ec4 PB |
8581 | } |
8582 | else | |
8583 | { | |
8584 | /* For the non-shared case, discard space for relocs against | |
8585 | symbols which turn out to need copy relocs or are not | |
8586 | dynamic. */ | |
8587 | ||
f5385ebf AM |
8588 | if (!h->non_got_ref |
8589 | && ((h->def_dynamic | |
8590 | && !h->def_regular) | |
5e681ec4 PB |
8591 | || (htab->root.dynamic_sections_created |
8592 | && (h->root.type == bfd_link_hash_undefweak | |
8593 | || h->root.type == bfd_link_hash_undefined)))) | |
8594 | { | |
8595 | /* Make sure this symbol is output as a dynamic symbol. | |
8596 | Undefined weak syms won't yet be marked as dynamic. */ | |
8597 | if (h->dynindx == -1 | |
f5385ebf | 8598 | && !h->forced_local) |
5e681ec4 | 8599 | { |
c152c796 | 8600 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
8601 | return FALSE; |
8602 | } | |
8603 | ||
8604 | /* If that succeeded, we know we'll be keeping all the | |
8605 | relocs. */ | |
8606 | if (h->dynindx != -1) | |
8607 | goto keep; | |
8608 | } | |
8609 | ||
8610 | eh->relocs_copied = NULL; | |
8611 | ||
8612 | keep: ; | |
8613 | } | |
8614 | ||
8615 | /* Finally, allocate space. */ | |
8616 | for (p = eh->relocs_copied; p != NULL; p = p->next) | |
8617 | { | |
8618 | asection *sreloc = elf_section_data (p->section)->sreloc; | |
00a97672 | 8619 | sreloc->size += p->count * RELOC_SIZE (htab); |
5e681ec4 PB |
8620 | } |
8621 | ||
8622 | return TRUE; | |
8623 | } | |
8624 | ||
08d1f311 DJ |
8625 | /* Find any dynamic relocs that apply to read-only sections. */ |
8626 | ||
8627 | static bfd_boolean | |
8628 | elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry *h, PTR inf) | |
8629 | { | |
8630 | struct elf32_arm_link_hash_entry *eh; | |
8631 | struct elf32_arm_relocs_copied *p; | |
8632 | ||
8633 | if (h->root.type == bfd_link_hash_warning) | |
8634 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8635 | ||
8636 | eh = (struct elf32_arm_link_hash_entry *) h; | |
8637 | for (p = eh->relocs_copied; p != NULL; p = p->next) | |
8638 | { | |
8639 | asection *s = p->section; | |
8640 | ||
8641 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
8642 | { | |
8643 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
8644 | ||
8645 | info->flags |= DF_TEXTREL; | |
8646 | ||
8647 | /* Not an error, just cut short the traversal. */ | |
8648 | return FALSE; | |
8649 | } | |
8650 | } | |
8651 | return TRUE; | |
8652 | } | |
8653 | ||
d504ffc8 DJ |
8654 | void |
8655 | bfd_elf32_arm_set_byteswap_code (struct bfd_link_info *info, | |
8656 | int byteswap_code) | |
8657 | { | |
8658 | struct elf32_arm_link_hash_table *globals; | |
8659 | ||
8660 | globals = elf32_arm_hash_table (info); | |
8661 | globals->byteswap_code = byteswap_code; | |
8662 | } | |
8663 | ||
252b5132 RH |
8664 | /* Set the sizes of the dynamic sections. */ |
8665 | ||
b34976b6 | 8666 | static bfd_boolean |
57e8b36a NC |
8667 | elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED, |
8668 | struct bfd_link_info * info) | |
252b5132 RH |
8669 | { |
8670 | bfd * dynobj; | |
8671 | asection * s; | |
b34976b6 AM |
8672 | bfd_boolean plt; |
8673 | bfd_boolean relocs; | |
5e681ec4 PB |
8674 | bfd *ibfd; |
8675 | struct elf32_arm_link_hash_table *htab; | |
252b5132 | 8676 | |
5e681ec4 | 8677 | htab = elf32_arm_hash_table (info); |
252b5132 RH |
8678 | dynobj = elf_hash_table (info)->dynobj; |
8679 | BFD_ASSERT (dynobj != NULL); | |
39b41c9c | 8680 | check_use_blx (htab); |
252b5132 RH |
8681 | |
8682 | if (elf_hash_table (info)->dynamic_sections_created) | |
8683 | { | |
8684 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 8685 | if (info->executable) |
252b5132 RH |
8686 | { |
8687 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
8688 | BFD_ASSERT (s != NULL); | |
eea6121a | 8689 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
252b5132 RH |
8690 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
8691 | } | |
8692 | } | |
5e681ec4 PB |
8693 | |
8694 | /* Set up .got offsets for local syms, and space for local dynamic | |
8695 | relocs. */ | |
8696 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
252b5132 | 8697 | { |
5e681ec4 PB |
8698 | bfd_signed_vma *local_got; |
8699 | bfd_signed_vma *end_local_got; | |
8700 | char *local_tls_type; | |
8701 | bfd_size_type locsymcount; | |
8702 | Elf_Internal_Shdr *symtab_hdr; | |
8703 | asection *srel; | |
8704 | ||
0ffa91dd | 8705 | if (! is_arm_elf (ibfd)) |
5e681ec4 PB |
8706 | continue; |
8707 | ||
8708 | for (s = ibfd->sections; s != NULL; s = s->next) | |
8709 | { | |
8710 | struct elf32_arm_relocs_copied *p; | |
8711 | ||
6edfbbad | 8712 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
5e681ec4 PB |
8713 | { |
8714 | if (!bfd_is_abs_section (p->section) | |
8715 | && bfd_is_abs_section (p->section->output_section)) | |
8716 | { | |
8717 | /* Input section has been discarded, either because | |
8718 | it is a copy of a linkonce section or due to | |
8719 | linker script /DISCARD/, so we'll be discarding | |
8720 | the relocs too. */ | |
8721 | } | |
8722 | else if (p->count != 0) | |
8723 | { | |
8724 | srel = elf_section_data (p->section)->sreloc; | |
00a97672 | 8725 | srel->size += p->count * RELOC_SIZE (htab); |
5e681ec4 PB |
8726 | if ((p->section->output_section->flags & SEC_READONLY) != 0) |
8727 | info->flags |= DF_TEXTREL; | |
8728 | } | |
8729 | } | |
8730 | } | |
8731 | ||
8732 | local_got = elf_local_got_refcounts (ibfd); | |
8733 | if (!local_got) | |
8734 | continue; | |
8735 | ||
0ffa91dd | 8736 | symtab_hdr = & elf_symtab_hdr (ibfd); |
5e681ec4 PB |
8737 | locsymcount = symtab_hdr->sh_info; |
8738 | end_local_got = local_got + locsymcount; | |
ba93b8ac | 8739 | local_tls_type = elf32_arm_local_got_tls_type (ibfd); |
5e681ec4 PB |
8740 | s = htab->sgot; |
8741 | srel = htab->srelgot; | |
8742 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) | |
8743 | { | |
8744 | if (*local_got > 0) | |
8745 | { | |
eea6121a | 8746 | *local_got = s->size; |
ba93b8ac DJ |
8747 | if (*local_tls_type & GOT_TLS_GD) |
8748 | /* TLS_GD relocs need an 8-byte structure in the GOT. */ | |
8749 | s->size += 8; | |
8750 | if (*local_tls_type & GOT_TLS_IE) | |
8751 | s->size += 4; | |
8752 | if (*local_tls_type == GOT_NORMAL) | |
8753 | s->size += 4; | |
8754 | ||
8755 | if (info->shared || *local_tls_type == GOT_TLS_GD) | |
00a97672 | 8756 | srel->size += RELOC_SIZE (htab); |
5e681ec4 PB |
8757 | } |
8758 | else | |
8759 | *local_got = (bfd_vma) -1; | |
8760 | } | |
252b5132 RH |
8761 | } |
8762 | ||
ba93b8ac DJ |
8763 | if (htab->tls_ldm_got.refcount > 0) |
8764 | { | |
8765 | /* Allocate two GOT entries and one dynamic relocation (if necessary) | |
8766 | for R_ARM_TLS_LDM32 relocations. */ | |
8767 | htab->tls_ldm_got.offset = htab->sgot->size; | |
8768 | htab->sgot->size += 8; | |
8769 | if (info->shared) | |
00a97672 | 8770 | htab->srelgot->size += RELOC_SIZE (htab); |
ba93b8ac DJ |
8771 | } |
8772 | else | |
8773 | htab->tls_ldm_got.offset = -1; | |
8774 | ||
5e681ec4 PB |
8775 | /* Allocate global sym .plt and .got entries, and space for global |
8776 | sym dynamic relocs. */ | |
57e8b36a | 8777 | elf_link_hash_traverse (& htab->root, allocate_dynrelocs, info); |
252b5132 | 8778 | |
d504ffc8 DJ |
8779 | /* Here we rummage through the found bfds to collect glue information. */ |
8780 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
c7b8f16e | 8781 | { |
0ffa91dd | 8782 | if (! is_arm_elf (ibfd)) |
e44a2c9c AM |
8783 | continue; |
8784 | ||
c7b8f16e JB |
8785 | /* Initialise mapping tables for code/data. */ |
8786 | bfd_elf32_arm_init_maps (ibfd); | |
8787 | ||
8788 | if (!bfd_elf32_arm_process_before_allocation (ibfd, info) | |
8789 | || !bfd_elf32_arm_vfp11_erratum_scan (ibfd, info)) | |
8790 | /* xgettext:c-format */ | |
8791 | _bfd_error_handler (_("Errors encountered processing file %s"), | |
8792 | ibfd->filename); | |
8793 | } | |
d504ffc8 | 8794 | |
252b5132 RH |
8795 | /* The check_relocs and adjust_dynamic_symbol entry points have |
8796 | determined the sizes of the various dynamic sections. Allocate | |
8797 | memory for them. */ | |
b34976b6 AM |
8798 | plt = FALSE; |
8799 | relocs = FALSE; | |
252b5132 RH |
8800 | for (s = dynobj->sections; s != NULL; s = s->next) |
8801 | { | |
8802 | const char * name; | |
252b5132 RH |
8803 | |
8804 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
8805 | continue; | |
8806 | ||
8807 | /* It's OK to base decisions on the section name, because none | |
8808 | of the dynobj section names depend upon the input files. */ | |
8809 | name = bfd_get_section_name (dynobj, s); | |
8810 | ||
24a1ba0f | 8811 | if (strcmp (name, ".plt") == 0) |
252b5132 | 8812 | { |
c456f082 AM |
8813 | /* Remember whether there is a PLT. */ |
8814 | plt = s->size != 0; | |
252b5132 | 8815 | } |
0112cd26 | 8816 | else if (CONST_STRNEQ (name, ".rel")) |
252b5132 | 8817 | { |
c456f082 | 8818 | if (s->size != 0) |
252b5132 | 8819 | { |
252b5132 | 8820 | /* Remember whether there are any reloc sections other |
00a97672 RS |
8821 | than .rel(a).plt and .rela.plt.unloaded. */ |
8822 | if (s != htab->srelplt && s != htab->srelplt2) | |
b34976b6 | 8823 | relocs = TRUE; |
252b5132 RH |
8824 | |
8825 | /* We use the reloc_count field as a counter if we need | |
8826 | to copy relocs into the output file. */ | |
8827 | s->reloc_count = 0; | |
8828 | } | |
8829 | } | |
0112cd26 | 8830 | else if (! CONST_STRNEQ (name, ".got") |
c456f082 | 8831 | && strcmp (name, ".dynbss") != 0) |
252b5132 RH |
8832 | { |
8833 | /* It's not one of our sections, so don't allocate space. */ | |
8834 | continue; | |
8835 | } | |
8836 | ||
c456f082 | 8837 | if (s->size == 0) |
252b5132 | 8838 | { |
c456f082 | 8839 | /* If we don't need this section, strip it from the |
00a97672 RS |
8840 | output file. This is mostly to handle .rel(a).bss and |
8841 | .rel(a).plt. We must create both sections in | |
c456f082 AM |
8842 | create_dynamic_sections, because they must be created |
8843 | before the linker maps input sections to output | |
8844 | sections. The linker does that before | |
8845 | adjust_dynamic_symbol is called, and it is that | |
8846 | function which decides whether anything needs to go | |
8847 | into these sections. */ | |
8423293d | 8848 | s->flags |= SEC_EXCLUDE; |
252b5132 RH |
8849 | continue; |
8850 | } | |
8851 | ||
c456f082 AM |
8852 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
8853 | continue; | |
8854 | ||
252b5132 | 8855 | /* Allocate memory for the section contents. */ |
eea6121a | 8856 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
c456f082 | 8857 | if (s->contents == NULL) |
b34976b6 | 8858 | return FALSE; |
252b5132 RH |
8859 | } |
8860 | ||
8861 | if (elf_hash_table (info)->dynamic_sections_created) | |
8862 | { | |
8863 | /* Add some entries to the .dynamic section. We fill in the | |
8864 | values later, in elf32_arm_finish_dynamic_sections, but we | |
8865 | must add the entries now so that we get the correct size for | |
8866 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
8867 | dynamic linker and used by the debugger. */ | |
dc810e39 | 8868 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 8869 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 8870 | |
8532796c | 8871 | if (info->executable) |
252b5132 | 8872 | { |
dc810e39 | 8873 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 8874 | return FALSE; |
252b5132 RH |
8875 | } |
8876 | ||
8877 | if (plt) | |
8878 | { | |
dc810e39 AM |
8879 | if ( !add_dynamic_entry (DT_PLTGOT, 0) |
8880 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
00a97672 RS |
8881 | || !add_dynamic_entry (DT_PLTREL, |
8882 | htab->use_rel ? DT_REL : DT_RELA) | |
dc810e39 | 8883 | || !add_dynamic_entry (DT_JMPREL, 0)) |
b34976b6 | 8884 | return FALSE; |
252b5132 RH |
8885 | } |
8886 | ||
8887 | if (relocs) | |
8888 | { | |
00a97672 RS |
8889 | if (htab->use_rel) |
8890 | { | |
8891 | if (!add_dynamic_entry (DT_REL, 0) | |
8892 | || !add_dynamic_entry (DT_RELSZ, 0) | |
8893 | || !add_dynamic_entry (DT_RELENT, RELOC_SIZE (htab))) | |
8894 | return FALSE; | |
8895 | } | |
8896 | else | |
8897 | { | |
8898 | if (!add_dynamic_entry (DT_RELA, 0) | |
8899 | || !add_dynamic_entry (DT_RELASZ, 0) | |
8900 | || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab))) | |
8901 | return FALSE; | |
8902 | } | |
252b5132 RH |
8903 | } |
8904 | ||
08d1f311 DJ |
8905 | /* If any dynamic relocs apply to a read-only section, |
8906 | then we need a DT_TEXTREL entry. */ | |
8907 | if ((info->flags & DF_TEXTREL) == 0) | |
8908 | elf_link_hash_traverse (&htab->root, elf32_arm_readonly_dynrelocs, | |
8909 | (PTR) info); | |
8910 | ||
99e4ae17 | 8911 | if ((info->flags & DF_TEXTREL) != 0) |
252b5132 | 8912 | { |
dc810e39 | 8913 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 8914 | return FALSE; |
252b5132 | 8915 | } |
7a2b07ff NS |
8916 | if (htab->vxworks_p |
8917 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) | |
8918 | return FALSE; | |
252b5132 | 8919 | } |
8532796c | 8920 | #undef add_dynamic_entry |
252b5132 | 8921 | |
b34976b6 | 8922 | return TRUE; |
252b5132 RH |
8923 | } |
8924 | ||
252b5132 RH |
8925 | /* Finish up dynamic symbol handling. We set the contents of various |
8926 | dynamic sections here. */ | |
8927 | ||
b34976b6 | 8928 | static bfd_boolean |
57e8b36a NC |
8929 | elf32_arm_finish_dynamic_symbol (bfd * output_bfd, struct bfd_link_info * info, |
8930 | struct elf_link_hash_entry * h, Elf_Internal_Sym * sym) | |
252b5132 RH |
8931 | { |
8932 | bfd * dynobj; | |
e5a52504 | 8933 | struct elf32_arm_link_hash_table *htab; |
b7693d02 | 8934 | struct elf32_arm_link_hash_entry *eh; |
252b5132 RH |
8935 | |
8936 | dynobj = elf_hash_table (info)->dynobj; | |
e5a52504 | 8937 | htab = elf32_arm_hash_table (info); |
b7693d02 | 8938 | eh = (struct elf32_arm_link_hash_entry *) h; |
252b5132 RH |
8939 | |
8940 | if (h->plt.offset != (bfd_vma) -1) | |
8941 | { | |
8942 | asection * splt; | |
252b5132 | 8943 | asection * srel; |
e5a52504 | 8944 | bfd_byte *loc; |
24a1ba0f | 8945 | bfd_vma plt_index; |
947216bf | 8946 | Elf_Internal_Rela rel; |
252b5132 RH |
8947 | |
8948 | /* This symbol has an entry in the procedure linkage table. Set | |
8949 | it up. */ | |
8950 | ||
8951 | BFD_ASSERT (h->dynindx != -1); | |
8952 | ||
8953 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
00a97672 | 8954 | srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".plt")); |
e5a52504 | 8955 | BFD_ASSERT (splt != NULL && srel != NULL); |
252b5132 | 8956 | |
e5a52504 MM |
8957 | /* Fill in the entry in the procedure linkage table. */ |
8958 | if (htab->symbian_p) | |
8959 | { | |
52ab56c2 PB |
8960 | put_arm_insn (htab, output_bfd, |
8961 | elf32_arm_symbian_plt_entry[0], | |
8962 | splt->contents + h->plt.offset); | |
8963 | bfd_put_32 (output_bfd, | |
8964 | elf32_arm_symbian_plt_entry[1], | |
8965 | splt->contents + h->plt.offset + 4); | |
e5a52504 MM |
8966 | |
8967 | /* Fill in the entry in the .rel.plt section. */ | |
2a1b9a48 MM |
8968 | rel.r_offset = (splt->output_section->vma |
8969 | + splt->output_offset | |
52ab56c2 | 8970 | + h->plt.offset + 4); |
e5a52504 | 8971 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT); |
b7693d02 DJ |
8972 | |
8973 | /* Get the index in the procedure linkage table which | |
8974 | corresponds to this symbol. This is the index of this symbol | |
8975 | in all the symbols for which we are making plt entries. The | |
8976 | first entry in the procedure linkage table is reserved. */ | |
8977 | plt_index = ((h->plt.offset - htab->plt_header_size) | |
8978 | / htab->plt_entry_size); | |
e5a52504 MM |
8979 | } |
8980 | else | |
8981 | { | |
00a97672 | 8982 | bfd_vma got_offset, got_address, plt_address; |
e5a52504 MM |
8983 | bfd_vma got_displacement; |
8984 | asection * sgot; | |
52ab56c2 | 8985 | bfd_byte * ptr; |
e5a52504 MM |
8986 | |
8987 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
8988 | BFD_ASSERT (sgot != NULL); | |
8989 | ||
b7693d02 DJ |
8990 | /* Get the offset into the .got.plt table of the entry that |
8991 | corresponds to this function. */ | |
8992 | got_offset = eh->plt_got_offset; | |
8993 | ||
8994 | /* Get the index in the procedure linkage table which | |
8995 | corresponds to this symbol. This is the index of this symbol | |
8996 | in all the symbols for which we are making plt entries. The | |
8997 | first three entries in .got.plt are reserved; after that | |
8998 | symbols appear in the same order as in .plt. */ | |
8999 | plt_index = (got_offset - 12) / 4; | |
e5a52504 | 9000 | |
00a97672 RS |
9001 | /* Calculate the address of the GOT entry. */ |
9002 | got_address = (sgot->output_section->vma | |
9003 | + sgot->output_offset | |
9004 | + got_offset); | |
5e681ec4 | 9005 | |
00a97672 RS |
9006 | /* ...and the address of the PLT entry. */ |
9007 | plt_address = (splt->output_section->vma | |
9008 | + splt->output_offset | |
9009 | + h->plt.offset); | |
5e681ec4 | 9010 | |
52ab56c2 | 9011 | ptr = htab->splt->contents + h->plt.offset; |
00a97672 RS |
9012 | if (htab->vxworks_p && info->shared) |
9013 | { | |
9014 | unsigned int i; | |
9015 | bfd_vma val; | |
9016 | ||
52ab56c2 | 9017 | for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4) |
00a97672 RS |
9018 | { |
9019 | val = elf32_arm_vxworks_shared_plt_entry[i]; | |
9020 | if (i == 2) | |
9021 | val |= got_address - sgot->output_section->vma; | |
9022 | if (i == 5) | |
9023 | val |= plt_index * RELOC_SIZE (htab); | |
52ab56c2 PB |
9024 | if (i == 2 || i == 5) |
9025 | bfd_put_32 (output_bfd, val, ptr); | |
9026 | else | |
9027 | put_arm_insn (htab, output_bfd, val, ptr); | |
00a97672 RS |
9028 | } |
9029 | } | |
9030 | else if (htab->vxworks_p) | |
b7693d02 | 9031 | { |
00a97672 RS |
9032 | unsigned int i; |
9033 | bfd_vma val; | |
9034 | ||
d3753b85 | 9035 | for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4) |
00a97672 RS |
9036 | { |
9037 | val = elf32_arm_vxworks_exec_plt_entry[i]; | |
9038 | if (i == 2) | |
9039 | val |= got_address; | |
9040 | if (i == 4) | |
9041 | val |= 0xffffff & -((h->plt.offset + i * 4 + 8) >> 2); | |
9042 | if (i == 5) | |
9043 | val |= plt_index * RELOC_SIZE (htab); | |
52ab56c2 PB |
9044 | if (i == 2 || i == 5) |
9045 | bfd_put_32 (output_bfd, val, ptr); | |
9046 | else | |
9047 | put_arm_insn (htab, output_bfd, val, ptr); | |
00a97672 RS |
9048 | } |
9049 | ||
9050 | loc = (htab->srelplt2->contents | |
9051 | + (plt_index * 2 + 1) * RELOC_SIZE (htab)); | |
9052 | ||
9053 | /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation | |
9054 | referencing the GOT for this PLT entry. */ | |
9055 | rel.r_offset = plt_address + 8; | |
9056 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); | |
9057 | rel.r_addend = got_offset; | |
9058 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
9059 | loc += RELOC_SIZE (htab); | |
9060 | ||
9061 | /* Create the R_ARM_ABS32 relocation referencing the | |
9062 | beginning of the PLT for this GOT entry. */ | |
9063 | rel.r_offset = got_address; | |
9064 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32); | |
9065 | rel.r_addend = 0; | |
9066 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
b7693d02 | 9067 | } |
00a97672 RS |
9068 | else |
9069 | { | |
bd97cb95 | 9070 | bfd_signed_vma thumb_refs; |
00a97672 RS |
9071 | /* Calculate the displacement between the PLT slot and the |
9072 | entry in the GOT. The eight-byte offset accounts for the | |
9073 | value produced by adding to pc in the first instruction | |
9074 | of the PLT stub. */ | |
9075 | got_displacement = got_address - (plt_address + 8); | |
b7693d02 | 9076 | |
00a97672 RS |
9077 | BFD_ASSERT ((got_displacement & 0xf0000000) == 0); |
9078 | ||
bd97cb95 DJ |
9079 | thumb_refs = eh->plt_thumb_refcount; |
9080 | if (!htab->use_blx) | |
9081 | thumb_refs += eh->plt_maybe_thumb_refcount; | |
9082 | ||
9083 | if (thumb_refs > 0) | |
00a97672 | 9084 | { |
52ab56c2 PB |
9085 | put_thumb_insn (htab, output_bfd, |
9086 | elf32_arm_plt_thumb_stub[0], ptr - 4); | |
9087 | put_thumb_insn (htab, output_bfd, | |
9088 | elf32_arm_plt_thumb_stub[1], ptr - 2); | |
00a97672 RS |
9089 | } |
9090 | ||
52ab56c2 PB |
9091 | put_arm_insn (htab, output_bfd, |
9092 | elf32_arm_plt_entry[0] | |
9093 | | ((got_displacement & 0x0ff00000) >> 20), | |
9094 | ptr + 0); | |
9095 | put_arm_insn (htab, output_bfd, | |
9096 | elf32_arm_plt_entry[1] | |
9097 | | ((got_displacement & 0x000ff000) >> 12), | |
9098 | ptr+ 4); | |
9099 | put_arm_insn (htab, output_bfd, | |
9100 | elf32_arm_plt_entry[2] | |
9101 | | (got_displacement & 0x00000fff), | |
9102 | ptr + 8); | |
5e681ec4 | 9103 | #ifdef FOUR_WORD_PLT |
52ab56c2 | 9104 | bfd_put_32 (output_bfd, elf32_arm_plt_entry[3], ptr + 12); |
5e681ec4 | 9105 | #endif |
00a97672 | 9106 | } |
252b5132 | 9107 | |
e5a52504 MM |
9108 | /* Fill in the entry in the global offset table. */ |
9109 | bfd_put_32 (output_bfd, | |
9110 | (splt->output_section->vma | |
9111 | + splt->output_offset), | |
9112 | sgot->contents + got_offset); | |
9113 | ||
00a97672 RS |
9114 | /* Fill in the entry in the .rel(a).plt section. */ |
9115 | rel.r_addend = 0; | |
9116 | rel.r_offset = got_address; | |
e5a52504 MM |
9117 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_JUMP_SLOT); |
9118 | } | |
57e8b36a | 9119 | |
00a97672 RS |
9120 | loc = srel->contents + plt_index * RELOC_SIZE (htab); |
9121 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
252b5132 | 9122 | |
f5385ebf | 9123 | if (!h->def_regular) |
252b5132 RH |
9124 | { |
9125 | /* Mark the symbol as undefined, rather than as defined in | |
9126 | the .plt section. Leave the value alone. */ | |
9127 | sym->st_shndx = SHN_UNDEF; | |
d982ba73 PB |
9128 | /* If the symbol is weak, we do need to clear the value. |
9129 | Otherwise, the PLT entry would provide a definition for | |
9130 | the symbol even if the symbol wasn't defined anywhere, | |
9131 | and so the symbol would never be NULL. */ | |
f5385ebf | 9132 | if (!h->ref_regular_nonweak) |
d982ba73 | 9133 | sym->st_value = 0; |
252b5132 RH |
9134 | } |
9135 | } | |
9136 | ||
ba93b8ac DJ |
9137 | if (h->got.offset != (bfd_vma) -1 |
9138 | && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_GD) == 0 | |
9139 | && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_IE) == 0) | |
252b5132 RH |
9140 | { |
9141 | asection * sgot; | |
9142 | asection * srel; | |
947216bf AM |
9143 | Elf_Internal_Rela rel; |
9144 | bfd_byte *loc; | |
00a97672 | 9145 | bfd_vma offset; |
252b5132 RH |
9146 | |
9147 | /* This symbol has an entry in the global offset table. Set it | |
9148 | up. */ | |
252b5132 | 9149 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
00a97672 | 9150 | srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".got")); |
252b5132 RH |
9151 | BFD_ASSERT (sgot != NULL && srel != NULL); |
9152 | ||
00a97672 RS |
9153 | offset = (h->got.offset & ~(bfd_vma) 1); |
9154 | rel.r_addend = 0; | |
252b5132 RH |
9155 | rel.r_offset = (sgot->output_section->vma |
9156 | + sgot->output_offset | |
00a97672 | 9157 | + offset); |
252b5132 | 9158 | |
5e681ec4 PB |
9159 | /* If this is a static link, or it is a -Bsymbolic link and the |
9160 | symbol is defined locally or was forced to be local because | |
9161 | of a version file, we just want to emit a RELATIVE reloc. | |
9162 | The entry in the global offset table will already have been | |
9163 | initialized in the relocate_section function. */ | |
252b5132 | 9164 | if (info->shared |
5e681ec4 PB |
9165 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
9166 | { | |
9167 | BFD_ASSERT((h->got.offset & 1) != 0); | |
9168 | rel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); | |
00a97672 RS |
9169 | if (!htab->use_rel) |
9170 | { | |
9171 | rel.r_addend = bfd_get_32 (output_bfd, sgot->contents + offset); | |
9172 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset); | |
9173 | } | |
5e681ec4 | 9174 | } |
252b5132 RH |
9175 | else |
9176 | { | |
5e681ec4 | 9177 | BFD_ASSERT((h->got.offset & 1) == 0); |
00a97672 | 9178 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset); |
252b5132 RH |
9179 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT); |
9180 | } | |
9181 | ||
00a97672 RS |
9182 | loc = srel->contents + srel->reloc_count++ * RELOC_SIZE (htab); |
9183 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
252b5132 RH |
9184 | } |
9185 | ||
f5385ebf | 9186 | if (h->needs_copy) |
252b5132 RH |
9187 | { |
9188 | asection * s; | |
947216bf AM |
9189 | Elf_Internal_Rela rel; |
9190 | bfd_byte *loc; | |
252b5132 RH |
9191 | |
9192 | /* This symbol needs a copy reloc. Set it up. */ | |
252b5132 RH |
9193 | BFD_ASSERT (h->dynindx != -1 |
9194 | && (h->root.type == bfd_link_hash_defined | |
9195 | || h->root.type == bfd_link_hash_defweak)); | |
9196 | ||
9197 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
00a97672 | 9198 | RELOC_SECTION (htab, ".bss")); |
252b5132 RH |
9199 | BFD_ASSERT (s != NULL); |
9200 | ||
00a97672 | 9201 | rel.r_addend = 0; |
252b5132 RH |
9202 | rel.r_offset = (h->root.u.def.value |
9203 | + h->root.u.def.section->output_section->vma | |
9204 | + h->root.u.def.section->output_offset); | |
9205 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY); | |
00a97672 RS |
9206 | loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab); |
9207 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
252b5132 RH |
9208 | } |
9209 | ||
00a97672 RS |
9210 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks, |
9211 | the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative | |
9212 | to the ".got" section. */ | |
252b5132 | 9213 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 |
00a97672 | 9214 | || (!htab->vxworks_p && h == htab->root.hgot)) |
252b5132 RH |
9215 | sym->st_shndx = SHN_ABS; |
9216 | ||
b34976b6 | 9217 | return TRUE; |
252b5132 RH |
9218 | } |
9219 | ||
9220 | /* Finish up the dynamic sections. */ | |
9221 | ||
b34976b6 | 9222 | static bfd_boolean |
57e8b36a | 9223 | elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info) |
252b5132 RH |
9224 | { |
9225 | bfd * dynobj; | |
9226 | asection * sgot; | |
9227 | asection * sdyn; | |
9228 | ||
9229 | dynobj = elf_hash_table (info)->dynobj; | |
9230 | ||
9231 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
229fcec5 | 9232 | BFD_ASSERT (elf32_arm_hash_table (info)->symbian_p || sgot != NULL); |
252b5132 RH |
9233 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
9234 | ||
9235 | if (elf_hash_table (info)->dynamic_sections_created) | |
9236 | { | |
9237 | asection *splt; | |
9238 | Elf32_External_Dyn *dyncon, *dynconend; | |
229fcec5 | 9239 | struct elf32_arm_link_hash_table *htab; |
252b5132 | 9240 | |
229fcec5 | 9241 | htab = elf32_arm_hash_table (info); |
252b5132 | 9242 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
24a1ba0f | 9243 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
252b5132 RH |
9244 | |
9245 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 9246 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
9b485d32 | 9247 | |
252b5132 RH |
9248 | for (; dyncon < dynconend; dyncon++) |
9249 | { | |
9250 | Elf_Internal_Dyn dyn; | |
9251 | const char * name; | |
9252 | asection * s; | |
9253 | ||
9254 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
9255 | ||
9256 | switch (dyn.d_tag) | |
9257 | { | |
229fcec5 MM |
9258 | unsigned int type; |
9259 | ||
252b5132 | 9260 | default: |
7a2b07ff NS |
9261 | if (htab->vxworks_p |
9262 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
9263 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
252b5132 RH |
9264 | break; |
9265 | ||
229fcec5 MM |
9266 | case DT_HASH: |
9267 | name = ".hash"; | |
9268 | goto get_vma_if_bpabi; | |
9269 | case DT_STRTAB: | |
9270 | name = ".dynstr"; | |
9271 | goto get_vma_if_bpabi; | |
9272 | case DT_SYMTAB: | |
9273 | name = ".dynsym"; | |
9274 | goto get_vma_if_bpabi; | |
c0042f5d MM |
9275 | case DT_VERSYM: |
9276 | name = ".gnu.version"; | |
9277 | goto get_vma_if_bpabi; | |
9278 | case DT_VERDEF: | |
9279 | name = ".gnu.version_d"; | |
9280 | goto get_vma_if_bpabi; | |
9281 | case DT_VERNEED: | |
9282 | name = ".gnu.version_r"; | |
9283 | goto get_vma_if_bpabi; | |
9284 | ||
252b5132 RH |
9285 | case DT_PLTGOT: |
9286 | name = ".got"; | |
9287 | goto get_vma; | |
9288 | case DT_JMPREL: | |
00a97672 | 9289 | name = RELOC_SECTION (htab, ".plt"); |
252b5132 RH |
9290 | get_vma: |
9291 | s = bfd_get_section_by_name (output_bfd, name); | |
9292 | BFD_ASSERT (s != NULL); | |
229fcec5 MM |
9293 | if (!htab->symbian_p) |
9294 | dyn.d_un.d_ptr = s->vma; | |
9295 | else | |
9296 | /* In the BPABI, tags in the PT_DYNAMIC section point | |
9297 | at the file offset, not the memory address, for the | |
9298 | convenience of the post linker. */ | |
9299 | dyn.d_un.d_ptr = s->filepos; | |
252b5132 RH |
9300 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
9301 | break; | |
9302 | ||
229fcec5 MM |
9303 | get_vma_if_bpabi: |
9304 | if (htab->symbian_p) | |
9305 | goto get_vma; | |
9306 | break; | |
9307 | ||
252b5132 | 9308 | case DT_PLTRELSZ: |
00a97672 RS |
9309 | s = bfd_get_section_by_name (output_bfd, |
9310 | RELOC_SECTION (htab, ".plt")); | |
252b5132 | 9311 | BFD_ASSERT (s != NULL); |
eea6121a | 9312 | dyn.d_un.d_val = s->size; |
252b5132 RH |
9313 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
9314 | break; | |
229fcec5 | 9315 | |
252b5132 | 9316 | case DT_RELSZ: |
00a97672 | 9317 | case DT_RELASZ: |
229fcec5 MM |
9318 | if (!htab->symbian_p) |
9319 | { | |
9320 | /* My reading of the SVR4 ABI indicates that the | |
9321 | procedure linkage table relocs (DT_JMPREL) should be | |
9322 | included in the overall relocs (DT_REL). This is | |
9323 | what Solaris does. However, UnixWare can not handle | |
9324 | that case. Therefore, we override the DT_RELSZ entry | |
9325 | here to make it not include the JMPREL relocs. Since | |
00a97672 | 9326 | the linker script arranges for .rel(a).plt to follow all |
229fcec5 MM |
9327 | other relocation sections, we don't have to worry |
9328 | about changing the DT_REL entry. */ | |
00a97672 RS |
9329 | s = bfd_get_section_by_name (output_bfd, |
9330 | RELOC_SECTION (htab, ".plt")); | |
229fcec5 MM |
9331 | if (s != NULL) |
9332 | dyn.d_un.d_val -= s->size; | |
9333 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
9334 | break; | |
9335 | } | |
9336 | /* Fall through */ | |
9337 | ||
9338 | case DT_REL: | |
9339 | case DT_RELA: | |
229fcec5 MM |
9340 | /* In the BPABI, the DT_REL tag must point at the file |
9341 | offset, not the VMA, of the first relocation | |
9342 | section. So, we use code similar to that in | |
9343 | elflink.c, but do not check for SHF_ALLOC on the | |
9344 | relcoation section, since relocations sections are | |
9345 | never allocated under the BPABI. The comments above | |
9346 | about Unixware notwithstanding, we include all of the | |
9347 | relocations here. */ | |
9348 | if (htab->symbian_p) | |
9349 | { | |
9350 | unsigned int i; | |
9351 | type = ((dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ) | |
9352 | ? SHT_REL : SHT_RELA); | |
9353 | dyn.d_un.d_val = 0; | |
9354 | for (i = 1; i < elf_numsections (output_bfd); i++) | |
9355 | { | |
9356 | Elf_Internal_Shdr *hdr | |
9357 | = elf_elfsections (output_bfd)[i]; | |
9358 | if (hdr->sh_type == type) | |
9359 | { | |
9360 | if (dyn.d_tag == DT_RELSZ | |
9361 | || dyn.d_tag == DT_RELASZ) | |
9362 | dyn.d_un.d_val += hdr->sh_size; | |
de52dba4 AM |
9363 | else if ((ufile_ptr) hdr->sh_offset |
9364 | <= dyn.d_un.d_val - 1) | |
229fcec5 MM |
9365 | dyn.d_un.d_val = hdr->sh_offset; |
9366 | } | |
9367 | } | |
9368 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
9369 | } | |
252b5132 | 9370 | break; |
88f7bcd5 NC |
9371 | |
9372 | /* Set the bottom bit of DT_INIT/FINI if the | |
9373 | corresponding function is Thumb. */ | |
9374 | case DT_INIT: | |
9375 | name = info->init_function; | |
9376 | goto get_sym; | |
9377 | case DT_FINI: | |
9378 | name = info->fini_function; | |
9379 | get_sym: | |
9380 | /* If it wasn't set by elf_bfd_final_link | |
4cc11e76 | 9381 | then there is nothing to adjust. */ |
88f7bcd5 NC |
9382 | if (dyn.d_un.d_val != 0) |
9383 | { | |
9384 | struct elf_link_hash_entry * eh; | |
9385 | ||
9386 | eh = elf_link_hash_lookup (elf_hash_table (info), name, | |
b34976b6 | 9387 | FALSE, FALSE, TRUE); |
88f7bcd5 NC |
9388 | if (eh != (struct elf_link_hash_entry *) NULL |
9389 | && ELF_ST_TYPE (eh->type) == STT_ARM_TFUNC) | |
9390 | { | |
9391 | dyn.d_un.d_val |= 1; | |
b34976b6 | 9392 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
88f7bcd5 NC |
9393 | } |
9394 | } | |
9395 | break; | |
252b5132 RH |
9396 | } |
9397 | } | |
9398 | ||
24a1ba0f | 9399 | /* Fill in the first entry in the procedure linkage table. */ |
e5a52504 | 9400 | if (splt->size > 0 && elf32_arm_hash_table (info)->plt_header_size) |
f7a74f8c | 9401 | { |
00a97672 RS |
9402 | const bfd_vma *plt0_entry; |
9403 | bfd_vma got_address, plt_address, got_displacement; | |
9404 | ||
9405 | /* Calculate the addresses of the GOT and PLT. */ | |
9406 | got_address = sgot->output_section->vma + sgot->output_offset; | |
9407 | plt_address = splt->output_section->vma + splt->output_offset; | |
9408 | ||
9409 | if (htab->vxworks_p) | |
9410 | { | |
9411 | /* The VxWorks GOT is relocated by the dynamic linker. | |
9412 | Therefore, we must emit relocations rather than simply | |
9413 | computing the values now. */ | |
9414 | Elf_Internal_Rela rel; | |
9415 | ||
9416 | plt0_entry = elf32_arm_vxworks_exec_plt0_entry; | |
52ab56c2 PB |
9417 | put_arm_insn (htab, output_bfd, plt0_entry[0], |
9418 | splt->contents + 0); | |
9419 | put_arm_insn (htab, output_bfd, plt0_entry[1], | |
9420 | splt->contents + 4); | |
9421 | put_arm_insn (htab, output_bfd, plt0_entry[2], | |
9422 | splt->contents + 8); | |
00a97672 RS |
9423 | bfd_put_32 (output_bfd, got_address, splt->contents + 12); |
9424 | ||
9425 | /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */ | |
9426 | rel.r_offset = plt_address + 12; | |
9427 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); | |
9428 | rel.r_addend = 0; | |
9429 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, | |
9430 | htab->srelplt2->contents); | |
9431 | } | |
9432 | else | |
9433 | { | |
9434 | got_displacement = got_address - (plt_address + 16); | |
9435 | ||
9436 | plt0_entry = elf32_arm_plt0_entry; | |
52ab56c2 PB |
9437 | put_arm_insn (htab, output_bfd, plt0_entry[0], |
9438 | splt->contents + 0); | |
9439 | put_arm_insn (htab, output_bfd, plt0_entry[1], | |
9440 | splt->contents + 4); | |
9441 | put_arm_insn (htab, output_bfd, plt0_entry[2], | |
9442 | splt->contents + 8); | |
9443 | put_arm_insn (htab, output_bfd, plt0_entry[3], | |
9444 | splt->contents + 12); | |
5e681ec4 | 9445 | |
5e681ec4 | 9446 | #ifdef FOUR_WORD_PLT |
00a97672 RS |
9447 | /* The displacement value goes in the otherwise-unused |
9448 | last word of the second entry. */ | |
9449 | bfd_put_32 (output_bfd, got_displacement, splt->contents + 28); | |
5e681ec4 | 9450 | #else |
00a97672 | 9451 | bfd_put_32 (output_bfd, got_displacement, splt->contents + 16); |
5e681ec4 | 9452 | #endif |
00a97672 | 9453 | } |
f7a74f8c | 9454 | } |
252b5132 RH |
9455 | |
9456 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
9457 | really seem like the right value. */ | |
74541ad4 AM |
9458 | if (splt->output_section->owner == output_bfd) |
9459 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; | |
00a97672 RS |
9460 | |
9461 | if (htab->vxworks_p && !info->shared && htab->splt->size > 0) | |
9462 | { | |
9463 | /* Correct the .rel(a).plt.unloaded relocations. They will have | |
9464 | incorrect symbol indexes. */ | |
9465 | int num_plts; | |
eed62c48 | 9466 | unsigned char *p; |
00a97672 RS |
9467 | |
9468 | num_plts = ((htab->splt->size - htab->plt_header_size) | |
9469 | / htab->plt_entry_size); | |
9470 | p = htab->srelplt2->contents + RELOC_SIZE (htab); | |
9471 | ||
9472 | for (; num_plts; num_plts--) | |
9473 | { | |
9474 | Elf_Internal_Rela rel; | |
9475 | ||
9476 | SWAP_RELOC_IN (htab) (output_bfd, p, &rel); | |
9477 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); | |
9478 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, p); | |
9479 | p += RELOC_SIZE (htab); | |
9480 | ||
9481 | SWAP_RELOC_IN (htab) (output_bfd, p, &rel); | |
9482 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32); | |
9483 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, p); | |
9484 | p += RELOC_SIZE (htab); | |
9485 | } | |
9486 | } | |
252b5132 RH |
9487 | } |
9488 | ||
9489 | /* Fill in the first three entries in the global offset table. */ | |
229fcec5 | 9490 | if (sgot) |
252b5132 | 9491 | { |
229fcec5 MM |
9492 | if (sgot->size > 0) |
9493 | { | |
9494 | if (sdyn == NULL) | |
9495 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
9496 | else | |
9497 | bfd_put_32 (output_bfd, | |
9498 | sdyn->output_section->vma + sdyn->output_offset, | |
9499 | sgot->contents); | |
9500 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
9501 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
9502 | } | |
252b5132 | 9503 | |
229fcec5 MM |
9504 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; |
9505 | } | |
252b5132 | 9506 | |
b34976b6 | 9507 | return TRUE; |
252b5132 RH |
9508 | } |
9509 | ||
ba96a88f | 9510 | static void |
57e8b36a | 9511 | elf32_arm_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED) |
ba96a88f | 9512 | { |
9b485d32 | 9513 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ |
e489d0ae | 9514 | struct elf32_arm_link_hash_table *globals; |
ba96a88f NC |
9515 | |
9516 | i_ehdrp = elf_elfheader (abfd); | |
9517 | ||
94a3258f PB |
9518 | if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_UNKNOWN) |
9519 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_ARM; | |
9520 | else | |
9521 | i_ehdrp->e_ident[EI_OSABI] = 0; | |
ba96a88f | 9522 | i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION; |
e489d0ae | 9523 | |
93204d3a PB |
9524 | if (link_info) |
9525 | { | |
9526 | globals = elf32_arm_hash_table (link_info); | |
9527 | if (globals->byteswap_code) | |
9528 | i_ehdrp->e_flags |= EF_ARM_BE8; | |
9529 | } | |
ba96a88f NC |
9530 | } |
9531 | ||
99e4ae17 | 9532 | static enum elf_reloc_type_class |
57e8b36a | 9533 | elf32_arm_reloc_type_class (const Elf_Internal_Rela *rela) |
99e4ae17 | 9534 | { |
f51e552e | 9535 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
99e4ae17 AJ |
9536 | { |
9537 | case R_ARM_RELATIVE: | |
9538 | return reloc_class_relative; | |
9539 | case R_ARM_JUMP_SLOT: | |
9540 | return reloc_class_plt; | |
9541 | case R_ARM_COPY: | |
9542 | return reloc_class_copy; | |
9543 | default: | |
9544 | return reloc_class_normal; | |
9545 | } | |
9546 | } | |
9547 | ||
e16bb312 NC |
9548 | /* Set the right machine number for an Arm ELF file. */ |
9549 | ||
9550 | static bfd_boolean | |
57e8b36a | 9551 | elf32_arm_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr) |
e16bb312 NC |
9552 | { |
9553 | if (hdr->sh_type == SHT_NOTE) | |
9554 | *flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
9555 | ||
9556 | return TRUE; | |
9557 | } | |
9558 | ||
e489d0ae | 9559 | static void |
57e8b36a | 9560 | elf32_arm_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) |
e16bb312 | 9561 | { |
5a6c6817 | 9562 | bfd_arm_update_notes (abfd, ARM_NOTE_SECTION); |
e16bb312 NC |
9563 | } |
9564 | ||
40a18ebd NC |
9565 | /* Return TRUE if this is an unwinding table entry. */ |
9566 | ||
9567 | static bfd_boolean | |
9568 | is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name) | |
9569 | { | |
0112cd26 NC |
9570 | return (CONST_STRNEQ (name, ELF_STRING_ARM_unwind) |
9571 | || CONST_STRNEQ (name, ELF_STRING_ARM_unwind_once)); | |
40a18ebd NC |
9572 | } |
9573 | ||
9574 | ||
9575 | /* Set the type and flags for an ARM section. We do this by | |
9576 | the section name, which is a hack, but ought to work. */ | |
9577 | ||
9578 | static bfd_boolean | |
9579 | elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec) | |
9580 | { | |
9581 | const char * name; | |
9582 | ||
9583 | name = bfd_get_section_name (abfd, sec); | |
9584 | ||
9585 | if (is_arm_elf_unwind_section_name (abfd, name)) | |
9586 | { | |
9587 | hdr->sh_type = SHT_ARM_EXIDX; | |
9588 | hdr->sh_flags |= SHF_LINK_ORDER; | |
9589 | } | |
9590 | return TRUE; | |
9591 | } | |
9592 | ||
6dc132d9 L |
9593 | /* Handle an ARM specific section when reading an object file. This is |
9594 | called when bfd_section_from_shdr finds a section with an unknown | |
9595 | type. */ | |
40a18ebd NC |
9596 | |
9597 | static bfd_boolean | |
9598 | elf32_arm_section_from_shdr (bfd *abfd, | |
9599 | Elf_Internal_Shdr * hdr, | |
6dc132d9 L |
9600 | const char *name, |
9601 | int shindex) | |
40a18ebd NC |
9602 | { |
9603 | /* There ought to be a place to keep ELF backend specific flags, but | |
9604 | at the moment there isn't one. We just keep track of the | |
9605 | sections by their name, instead. Fortunately, the ABI gives | |
9606 | names for all the ARM specific sections, so we will probably get | |
9607 | away with this. */ | |
9608 | switch (hdr->sh_type) | |
9609 | { | |
9610 | case SHT_ARM_EXIDX: | |
0951f019 RE |
9611 | case SHT_ARM_PREEMPTMAP: |
9612 | case SHT_ARM_ATTRIBUTES: | |
40a18ebd NC |
9613 | break; |
9614 | ||
9615 | default: | |
9616 | return FALSE; | |
9617 | } | |
9618 | ||
6dc132d9 | 9619 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
40a18ebd NC |
9620 | return FALSE; |
9621 | ||
9622 | return TRUE; | |
9623 | } | |
e489d0ae | 9624 | |
8e3de13a NC |
9625 | /* A structure used to record a list of sections, independently |
9626 | of the next and prev fields in the asection structure. */ | |
9627 | typedef struct section_list | |
9628 | { | |
9629 | asection * sec; | |
9630 | struct section_list * next; | |
9631 | struct section_list * prev; | |
9632 | } | |
9633 | section_list; | |
9634 | ||
9635 | /* Unfortunately we need to keep a list of sections for which | |
9636 | an _arm_elf_section_data structure has been allocated. This | |
9637 | is because it is possible for functions like elf32_arm_write_section | |
9638 | to be called on a section which has had an elf_data_structure | |
9639 | allocated for it (and so the used_by_bfd field is valid) but | |
9640 | for which the ARM extended version of this structure - the | |
9641 | _arm_elf_section_data structure - has not been allocated. */ | |
9642 | static section_list * sections_with_arm_elf_section_data = NULL; | |
9643 | ||
9644 | static void | |
957c6e41 | 9645 | record_section_with_arm_elf_section_data (asection * sec) |
8e3de13a NC |
9646 | { |
9647 | struct section_list * entry; | |
9648 | ||
957c6e41 | 9649 | entry = bfd_malloc (sizeof (* entry)); |
8e3de13a NC |
9650 | if (entry == NULL) |
9651 | return; | |
9652 | entry->sec = sec; | |
9653 | entry->next = sections_with_arm_elf_section_data; | |
9654 | entry->prev = NULL; | |
9655 | if (entry->next != NULL) | |
9656 | entry->next->prev = entry; | |
9657 | sections_with_arm_elf_section_data = entry; | |
9658 | } | |
9659 | ||
44444f50 NC |
9660 | static struct section_list * |
9661 | find_arm_elf_section_entry (asection * sec) | |
8e3de13a NC |
9662 | { |
9663 | struct section_list * entry; | |
bd4aae00 | 9664 | static struct section_list * last_entry = NULL; |
8e3de13a | 9665 | |
bd4aae00 NC |
9666 | /* This is a short cut for the typical case where the sections are added |
9667 | to the sections_with_arm_elf_section_data list in forward order and | |
9668 | then looked up here in backwards order. This makes a real difference | |
9669 | to the ld-srec/sec64k.exp linker test. */ | |
44444f50 | 9670 | entry = sections_with_arm_elf_section_data; |
bd4aae00 NC |
9671 | if (last_entry != NULL) |
9672 | { | |
9673 | if (last_entry->sec == sec) | |
44444f50 NC |
9674 | entry = last_entry; |
9675 | else if (last_entry->next != NULL | |
9676 | && last_entry->next->sec == sec) | |
9677 | entry = last_entry->next; | |
bd4aae00 | 9678 | } |
44444f50 NC |
9679 | |
9680 | for (; entry; entry = entry->next) | |
8e3de13a | 9681 | if (entry->sec == sec) |
44444f50 | 9682 | break; |
bd4aae00 | 9683 | |
44444f50 NC |
9684 | if (entry) |
9685 | /* Record the entry prior to this one - it is the entry we are most | |
9686 | likely to want to locate next time. Also this way if we have been | |
9687 | called from unrecord_section_with_arm_elf_section_data() we will not | |
9688 | be caching a pointer that is about to be freed. */ | |
9689 | last_entry = entry->prev; | |
9690 | ||
9691 | return entry; | |
9692 | } | |
9693 | ||
9694 | static _arm_elf_section_data * | |
9695 | get_arm_elf_section_data (asection * sec) | |
9696 | { | |
9697 | struct section_list * entry; | |
9698 | ||
9699 | entry = find_arm_elf_section_entry (sec); | |
9700 | ||
9701 | if (entry) | |
9702 | return elf32_arm_section_data (entry->sec); | |
9703 | else | |
9704 | return NULL; | |
8e3de13a NC |
9705 | } |
9706 | ||
9707 | static void | |
9708 | unrecord_section_with_arm_elf_section_data (asection * sec) | |
9709 | { | |
9710 | struct section_list * entry; | |
9711 | ||
44444f50 NC |
9712 | entry = find_arm_elf_section_entry (sec); |
9713 | ||
9714 | if (entry) | |
9715 | { | |
9716 | if (entry->prev != NULL) | |
9717 | entry->prev->next = entry->next; | |
9718 | if (entry->next != NULL) | |
9719 | entry->next->prev = entry->prev; | |
9720 | if (entry == sections_with_arm_elf_section_data) | |
9721 | sections_with_arm_elf_section_data = entry->next; | |
9722 | free (entry); | |
9723 | } | |
8e3de13a NC |
9724 | } |
9725 | ||
e489d0ae | 9726 | |
4e617b1e PB |
9727 | typedef struct |
9728 | { | |
9729 | void *finfo; | |
9730 | struct bfd_link_info *info; | |
91a5743d PB |
9731 | asection *sec; |
9732 | int sec_shndx; | |
4e617b1e PB |
9733 | bfd_boolean (*func) (void *, const char *, Elf_Internal_Sym *, |
9734 | asection *, struct elf_link_hash_entry *); | |
9735 | } output_arch_syminfo; | |
9736 | ||
9737 | enum map_symbol_type | |
9738 | { | |
9739 | ARM_MAP_ARM, | |
9740 | ARM_MAP_THUMB, | |
9741 | ARM_MAP_DATA | |
9742 | }; | |
9743 | ||
9744 | ||
9745 | /* Output a single PLT mapping symbol. */ | |
9746 | ||
9747 | static bfd_boolean | |
9748 | elf32_arm_ouput_plt_map_sym (output_arch_syminfo *osi, | |
9749 | enum map_symbol_type type, | |
9750 | bfd_vma offset) | |
9751 | { | |
9752 | static const char *names[3] = {"$a", "$t", "$d"}; | |
9753 | struct elf32_arm_link_hash_table *htab; | |
9754 | Elf_Internal_Sym sym; | |
9755 | ||
9756 | htab = elf32_arm_hash_table (osi->info); | |
91a5743d PB |
9757 | sym.st_value = osi->sec->output_section->vma |
9758 | + osi->sec->output_offset | |
9759 | + offset; | |
4e617b1e PB |
9760 | sym.st_size = 0; |
9761 | sym.st_other = 0; | |
9762 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
91a5743d PB |
9763 | sym.st_shndx = osi->sec_shndx; |
9764 | if (!osi->func (osi->finfo, names[type], &sym, osi->sec, NULL)) | |
4e617b1e PB |
9765 | return FALSE; |
9766 | return TRUE; | |
9767 | } | |
9768 | ||
9769 | ||
9770 | /* Output mapping symbols for PLT entries associated with H. */ | |
9771 | ||
9772 | static bfd_boolean | |
9773 | elf32_arm_output_plt_map (struct elf_link_hash_entry *h, void *inf) | |
9774 | { | |
9775 | output_arch_syminfo *osi = (output_arch_syminfo *) inf; | |
9776 | struct elf32_arm_link_hash_table *htab; | |
9777 | struct elf32_arm_link_hash_entry *eh; | |
9778 | bfd_vma addr; | |
9779 | ||
9780 | htab = elf32_arm_hash_table (osi->info); | |
9781 | ||
9782 | if (h->root.type == bfd_link_hash_indirect) | |
9783 | return TRUE; | |
9784 | ||
9785 | if (h->root.type == bfd_link_hash_warning) | |
9786 | /* When warning symbols are created, they **replace** the "real" | |
9787 | entry in the hash table, thus we never get to see the real | |
9788 | symbol in a hash traversal. So look at it now. */ | |
9789 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
9790 | ||
9791 | if (h->plt.offset == (bfd_vma) -1) | |
9792 | return TRUE; | |
9793 | ||
9794 | eh = (struct elf32_arm_link_hash_entry *) h; | |
9795 | addr = h->plt.offset; | |
9796 | if (htab->symbian_p) | |
9797 | { | |
9798 | if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr)) | |
9799 | return FALSE; | |
9800 | if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 4)) | |
9801 | return FALSE; | |
9802 | } | |
9803 | else if (htab->vxworks_p) | |
9804 | { | |
9805 | if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr)) | |
9806 | return FALSE; | |
9807 | if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 8)) | |
9808 | return FALSE; | |
9809 | if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr + 12)) | |
9810 | return FALSE; | |
9811 | if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 20)) | |
9812 | return FALSE; | |
9813 | } | |
9814 | else | |
9815 | { | |
bd97cb95 DJ |
9816 | bfd_signed_vma thumb_refs; |
9817 | ||
9818 | thumb_refs = eh->plt_thumb_refcount; | |
9819 | if (!htab->use_blx) | |
9820 | thumb_refs += eh->plt_maybe_thumb_refcount; | |
4e617b1e | 9821 | |
bd97cb95 | 9822 | if (thumb_refs > 0) |
4e617b1e PB |
9823 | { |
9824 | if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_THUMB, addr - 4)) | |
9825 | return FALSE; | |
9826 | } | |
9827 | #ifdef FOUR_WORD_PLT | |
9828 | if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr)) | |
9829 | return FALSE; | |
9830 | if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 12)) | |
9831 | return FALSE; | |
9832 | #else | |
9833 | /* A three-word PLT with no Thumb thunk contains only Arm code, | |
9834 | so only need to output a mapping symbol for the first PLT entry and | |
9835 | entries with thumb thunks. */ | |
bd97cb95 | 9836 | if (thumb_refs > 0 || addr == 20) |
4e617b1e PB |
9837 | { |
9838 | if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr)) | |
9839 | return FALSE; | |
9840 | } | |
9841 | #endif | |
9842 | } | |
9843 | ||
9844 | return TRUE; | |
9845 | } | |
9846 | ||
9847 | ||
91a5743d | 9848 | /* Output mapping symbols for linker generated sections. */ |
4e617b1e PB |
9849 | |
9850 | static bfd_boolean | |
9851 | elf32_arm_output_arch_local_syms (bfd *output_bfd, | |
9852 | struct bfd_link_info *info, | |
9853 | void *finfo, bfd_boolean (*func) (void *, const char *, | |
9854 | Elf_Internal_Sym *, | |
9855 | asection *, | |
9856 | struct elf_link_hash_entry *)) | |
9857 | { | |
9858 | output_arch_syminfo osi; | |
9859 | struct elf32_arm_link_hash_table *htab; | |
91a5743d PB |
9860 | bfd_vma offset; |
9861 | bfd_size_type size; | |
4e617b1e PB |
9862 | |
9863 | htab = elf32_arm_hash_table (info); | |
4e617b1e | 9864 | check_use_blx(htab); |
91a5743d | 9865 | |
4e617b1e PB |
9866 | osi.finfo = finfo; |
9867 | osi.info = info; | |
9868 | osi.func = func; | |
91a5743d PB |
9869 | |
9870 | /* ARM->Thumb glue. */ | |
9871 | if (htab->arm_glue_size > 0) | |
9872 | { | |
9873 | osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner, | |
9874 | ARM2THUMB_GLUE_SECTION_NAME); | |
9875 | ||
9876 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
9877 | (output_bfd, osi.sec->output_section); | |
9878 | if (info->shared || htab->root.is_relocatable_executable | |
9879 | || htab->pic_veneer) | |
9880 | size = ARM2THUMB_PIC_GLUE_SIZE; | |
9881 | else if (htab->use_blx) | |
9882 | size = ARM2THUMB_V5_STATIC_GLUE_SIZE; | |
9883 | else | |
9884 | size = ARM2THUMB_STATIC_GLUE_SIZE; | |
4e617b1e | 9885 | |
91a5743d PB |
9886 | for (offset = 0; offset < htab->arm_glue_size; offset += size) |
9887 | { | |
9888 | elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, offset); | |
9889 | elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_DATA, offset + size - 4); | |
9890 | } | |
9891 | } | |
9892 | ||
9893 | /* Thumb->ARM glue. */ | |
9894 | if (htab->thumb_glue_size > 0) | |
9895 | { | |
9896 | osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner, | |
9897 | THUMB2ARM_GLUE_SECTION_NAME); | |
9898 | ||
9899 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
9900 | (output_bfd, osi.sec->output_section); | |
9901 | size = THUMB2ARM_GLUE_SIZE; | |
9902 | ||
9903 | for (offset = 0; offset < htab->thumb_glue_size; offset += size) | |
9904 | { | |
9905 | elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_THUMB, offset); | |
9906 | elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, offset + 4); | |
9907 | } | |
9908 | } | |
9909 | ||
845b51d6 PB |
9910 | /* ARMv4 BX veneers. */ |
9911 | if (htab->bx_glue_size > 0) | |
9912 | { | |
9913 | osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner, | |
9914 | ARM_BX_GLUE_SECTION_NAME); | |
9915 | ||
9916 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
9917 | (output_bfd, osi.sec->output_section); | |
9918 | ||
9919 | elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, 0); | |
9920 | } | |
9921 | ||
91a5743d PB |
9922 | /* Finally, output mapping symbols for the PLT. */ |
9923 | if (!htab->splt || htab->splt->size == 0) | |
9924 | return TRUE; | |
9925 | ||
9926 | osi.sec_shndx = _bfd_elf_section_from_bfd_section (output_bfd, | |
9927 | htab->splt->output_section); | |
9928 | osi.sec = htab->splt; | |
4e617b1e PB |
9929 | /* Output mapping symbols for the plt header. SymbianOS does not have a |
9930 | plt header. */ | |
9931 | if (htab->vxworks_p) | |
9932 | { | |
9933 | /* VxWorks shared libraries have no PLT header. */ | |
9934 | if (!info->shared) | |
9935 | { | |
9936 | if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, 0)) | |
9937 | return FALSE; | |
9938 | if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_DATA, 12)) | |
9939 | return FALSE; | |
9940 | } | |
9941 | } | |
9942 | else if (!htab->symbian_p) | |
9943 | { | |
9944 | if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, 0)) | |
9945 | return FALSE; | |
9946 | #ifndef FOUR_WORD_PLT | |
9947 | if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_DATA, 16)) | |
9948 | return FALSE; | |
9949 | #endif | |
9950 | } | |
9951 | ||
9952 | elf_link_hash_traverse (&htab->root, elf32_arm_output_plt_map, (void *) &osi); | |
9953 | return TRUE; | |
9954 | } | |
9955 | ||
e489d0ae PB |
9956 | /* Allocate target specific section data. */ |
9957 | ||
9958 | static bfd_boolean | |
9959 | elf32_arm_new_section_hook (bfd *abfd, asection *sec) | |
9960 | { | |
f592407e AM |
9961 | if (!sec->used_by_bfd) |
9962 | { | |
9963 | _arm_elf_section_data *sdata; | |
9964 | bfd_size_type amt = sizeof (*sdata); | |
e489d0ae | 9965 | |
f592407e AM |
9966 | sdata = bfd_zalloc (abfd, amt); |
9967 | if (sdata == NULL) | |
9968 | return FALSE; | |
9969 | sec->used_by_bfd = sdata; | |
9970 | } | |
e489d0ae | 9971 | |
957c6e41 | 9972 | record_section_with_arm_elf_section_data (sec); |
8e3de13a | 9973 | |
e489d0ae PB |
9974 | return _bfd_elf_new_section_hook (abfd, sec); |
9975 | } | |
9976 | ||
9977 | ||
9978 | /* Used to order a list of mapping symbols by address. */ | |
9979 | ||
9980 | static int | |
9981 | elf32_arm_compare_mapping (const void * a, const void * b) | |
9982 | { | |
7f6a71ff JM |
9983 | const elf32_arm_section_map *amap = (const elf32_arm_section_map *) a; |
9984 | const elf32_arm_section_map *bmap = (const elf32_arm_section_map *) b; | |
9985 | ||
9986 | if (amap->vma > bmap->vma) | |
9987 | return 1; | |
9988 | else if (amap->vma < bmap->vma) | |
9989 | return -1; | |
9990 | else if (amap->type > bmap->type) | |
9991 | /* Ensure results do not depend on the host qsort for objects with | |
9992 | multiple mapping symbols at the same address by sorting on type | |
9993 | after vma. */ | |
9994 | return 1; | |
9995 | else if (amap->type < bmap->type) | |
9996 | return -1; | |
9997 | else | |
9998 | return 0; | |
e489d0ae PB |
9999 | } |
10000 | ||
10001 | ||
10002 | /* Do code byteswapping. Return FALSE afterwards so that the section is | |
10003 | written out as normal. */ | |
10004 | ||
10005 | static bfd_boolean | |
c7b8f16e JB |
10006 | elf32_arm_write_section (bfd *output_bfd, |
10007 | struct bfd_link_info *link_info, asection *sec, | |
e489d0ae PB |
10008 | bfd_byte *contents) |
10009 | { | |
c7b8f16e | 10010 | int mapcount, errcount; |
8e3de13a | 10011 | _arm_elf_section_data *arm_data; |
c7b8f16e | 10012 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); |
e489d0ae | 10013 | elf32_arm_section_map *map; |
c7b8f16e | 10014 | elf32_vfp11_erratum_list *errnode; |
e489d0ae PB |
10015 | bfd_vma ptr; |
10016 | bfd_vma end; | |
c7b8f16e | 10017 | bfd_vma offset = sec->output_section->vma + sec->output_offset; |
e489d0ae PB |
10018 | bfd_byte tmp; |
10019 | int i; | |
57e8b36a | 10020 | |
8e3de13a NC |
10021 | /* If this section has not been allocated an _arm_elf_section_data |
10022 | structure then we cannot record anything. */ | |
10023 | arm_data = get_arm_elf_section_data (sec); | |
10024 | if (arm_data == NULL) | |
10025 | return FALSE; | |
10026 | ||
10027 | mapcount = arm_data->mapcount; | |
10028 | map = arm_data->map; | |
c7b8f16e JB |
10029 | errcount = arm_data->erratumcount; |
10030 | ||
10031 | if (errcount != 0) | |
10032 | { | |
10033 | unsigned int endianflip = bfd_big_endian (output_bfd) ? 3 : 0; | |
10034 | ||
10035 | for (errnode = arm_data->erratumlist; errnode != 0; | |
10036 | errnode = errnode->next) | |
10037 | { | |
10038 | bfd_vma index = errnode->vma - offset; | |
10039 | ||
10040 | switch (errnode->type) | |
10041 | { | |
10042 | case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER: | |
10043 | { | |
10044 | bfd_vma branch_to_veneer; | |
10045 | /* Original condition code of instruction, plus bit mask for | |
10046 | ARM B instruction. */ | |
10047 | unsigned int insn = (errnode->u.b.vfp_insn & 0xf0000000) | |
10048 | | 0x0a000000; | |
10049 | ||
10050 | /* The instruction is before the label. */ | |
10051 | index -= 4; | |
10052 | ||
10053 | /* Above offset included in -4 below. */ | |
10054 | branch_to_veneer = errnode->u.b.veneer->vma | |
10055 | - errnode->vma - 4; | |
10056 | ||
10057 | if ((signed) branch_to_veneer < -(1 << 25) | |
10058 | || (signed) branch_to_veneer >= (1 << 25)) | |
10059 | (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of " | |
10060 | "range"), output_bfd); | |
10061 | ||
10062 | insn |= (branch_to_veneer >> 2) & 0xffffff; | |
10063 | contents[endianflip ^ index] = insn & 0xff; | |
10064 | contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff; | |
10065 | contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff; | |
10066 | contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff; | |
10067 | } | |
10068 | break; | |
10069 | ||
10070 | case VFP11_ERRATUM_ARM_VENEER: | |
10071 | { | |
10072 | bfd_vma branch_from_veneer; | |
10073 | unsigned int insn; | |
10074 | ||
10075 | /* Take size of veneer into account. */ | |
10076 | branch_from_veneer = errnode->u.v.branch->vma | |
10077 | - errnode->vma - 12; | |
10078 | ||
10079 | if ((signed) branch_from_veneer < -(1 << 25) | |
10080 | || (signed) branch_from_veneer >= (1 << 25)) | |
10081 | (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of " | |
10082 | "range"), output_bfd); | |
10083 | ||
10084 | /* Original instruction. */ | |
10085 | insn = errnode->u.v.branch->u.b.vfp_insn; | |
10086 | contents[endianflip ^ index] = insn & 0xff; | |
10087 | contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff; | |
10088 | contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff; | |
10089 | contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff; | |
10090 | ||
10091 | /* Branch back to insn after original insn. */ | |
10092 | insn = 0xea000000 | ((branch_from_veneer >> 2) & 0xffffff); | |
10093 | contents[endianflip ^ (index + 4)] = insn & 0xff; | |
10094 | contents[endianflip ^ (index + 5)] = (insn >> 8) & 0xff; | |
10095 | contents[endianflip ^ (index + 6)] = (insn >> 16) & 0xff; | |
10096 | contents[endianflip ^ (index + 7)] = (insn >> 24) & 0xff; | |
10097 | } | |
10098 | break; | |
10099 | ||
10100 | default: | |
10101 | abort (); | |
10102 | } | |
10103 | } | |
10104 | } | |
e489d0ae PB |
10105 | |
10106 | if (mapcount == 0) | |
10107 | return FALSE; | |
10108 | ||
c7b8f16e | 10109 | if (globals->byteswap_code) |
e489d0ae | 10110 | { |
c7b8f16e | 10111 | qsort (map, mapcount, sizeof (* map), elf32_arm_compare_mapping); |
57e8b36a | 10112 | |
c7b8f16e JB |
10113 | ptr = map[0].vma; |
10114 | for (i = 0; i < mapcount; i++) | |
10115 | { | |
10116 | if (i == mapcount - 1) | |
10117 | end = sec->size; | |
10118 | else | |
10119 | end = map[i + 1].vma; | |
e489d0ae | 10120 | |
c7b8f16e | 10121 | switch (map[i].type) |
e489d0ae | 10122 | { |
c7b8f16e JB |
10123 | case 'a': |
10124 | /* Byte swap code words. */ | |
10125 | while (ptr + 3 < end) | |
10126 | { | |
10127 | tmp = contents[ptr]; | |
10128 | contents[ptr] = contents[ptr + 3]; | |
10129 | contents[ptr + 3] = tmp; | |
10130 | tmp = contents[ptr + 1]; | |
10131 | contents[ptr + 1] = contents[ptr + 2]; | |
10132 | contents[ptr + 2] = tmp; | |
10133 | ptr += 4; | |
10134 | } | |
10135 | break; | |
e489d0ae | 10136 | |
c7b8f16e JB |
10137 | case 't': |
10138 | /* Byte swap code halfwords. */ | |
10139 | while (ptr + 1 < end) | |
10140 | { | |
10141 | tmp = contents[ptr]; | |
10142 | contents[ptr] = contents[ptr + 1]; | |
10143 | contents[ptr + 1] = tmp; | |
10144 | ptr += 2; | |
10145 | } | |
10146 | break; | |
10147 | ||
10148 | case 'd': | |
10149 | /* Leave data alone. */ | |
10150 | break; | |
10151 | } | |
10152 | ptr = end; | |
10153 | } | |
e489d0ae | 10154 | } |
8e3de13a | 10155 | |
93204d3a | 10156 | free (map); |
8e3de13a | 10157 | arm_data->mapcount = 0; |
c7b8f16e | 10158 | arm_data->mapsize = 0; |
8e3de13a NC |
10159 | arm_data->map = NULL; |
10160 | unrecord_section_with_arm_elf_section_data (sec); | |
10161 | ||
e489d0ae PB |
10162 | return FALSE; |
10163 | } | |
10164 | ||
957c6e41 NC |
10165 | static void |
10166 | unrecord_section_via_map_over_sections (bfd * abfd ATTRIBUTE_UNUSED, | |
10167 | asection * sec, | |
10168 | void * ignore ATTRIBUTE_UNUSED) | |
10169 | { | |
10170 | unrecord_section_with_arm_elf_section_data (sec); | |
10171 | } | |
10172 | ||
10173 | static bfd_boolean | |
10174 | elf32_arm_close_and_cleanup (bfd * abfd) | |
10175 | { | |
b25e3d87 L |
10176 | if (abfd->sections) |
10177 | bfd_map_over_sections (abfd, | |
10178 | unrecord_section_via_map_over_sections, | |
10179 | NULL); | |
957c6e41 NC |
10180 | |
10181 | return _bfd_elf_close_and_cleanup (abfd); | |
10182 | } | |
10183 | ||
b25e3d87 L |
10184 | static bfd_boolean |
10185 | elf32_arm_bfd_free_cached_info (bfd * abfd) | |
10186 | { | |
10187 | if (abfd->sections) | |
10188 | bfd_map_over_sections (abfd, | |
10189 | unrecord_section_via_map_over_sections, | |
10190 | NULL); | |
10191 | ||
10192 | return _bfd_free_cached_info (abfd); | |
10193 | } | |
10194 | ||
b7693d02 DJ |
10195 | /* Display STT_ARM_TFUNC symbols as functions. */ |
10196 | ||
10197 | static void | |
10198 | elf32_arm_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, | |
10199 | asymbol *asym) | |
10200 | { | |
10201 | elf_symbol_type *elfsym = (elf_symbol_type *) asym; | |
10202 | ||
10203 | if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_ARM_TFUNC) | |
10204 | elfsym->symbol.flags |= BSF_FUNCTION; | |
10205 | } | |
10206 | ||
0beaef2b PB |
10207 | |
10208 | /* Mangle thumb function symbols as we read them in. */ | |
10209 | ||
8384fb8f | 10210 | static bfd_boolean |
0beaef2b PB |
10211 | elf32_arm_swap_symbol_in (bfd * abfd, |
10212 | const void *psrc, | |
10213 | const void *pshn, | |
10214 | Elf_Internal_Sym *dst) | |
10215 | { | |
8384fb8f AM |
10216 | if (!bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst)) |
10217 | return FALSE; | |
0beaef2b PB |
10218 | |
10219 | /* New EABI objects mark thumb function symbols by setting the low bit of | |
10220 | the address. Turn these into STT_ARM_TFUNC. */ | |
10221 | if (ELF_ST_TYPE (dst->st_info) == STT_FUNC | |
10222 | && (dst->st_value & 1)) | |
10223 | { | |
10224 | dst->st_info = ELF_ST_INFO (ELF_ST_BIND (dst->st_info), STT_ARM_TFUNC); | |
10225 | dst->st_value &= ~(bfd_vma) 1; | |
10226 | } | |
8384fb8f | 10227 | return TRUE; |
0beaef2b PB |
10228 | } |
10229 | ||
10230 | ||
10231 | /* Mangle thumb function symbols as we write them out. */ | |
10232 | ||
10233 | static void | |
10234 | elf32_arm_swap_symbol_out (bfd *abfd, | |
10235 | const Elf_Internal_Sym *src, | |
10236 | void *cdst, | |
10237 | void *shndx) | |
10238 | { | |
10239 | Elf_Internal_Sym newsym; | |
10240 | ||
10241 | /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit | |
10242 | of the address set, as per the new EABI. We do this unconditionally | |
10243 | because objcopy does not set the elf header flags until after | |
10244 | it writes out the symbol table. */ | |
10245 | if (ELF_ST_TYPE (src->st_info) == STT_ARM_TFUNC) | |
10246 | { | |
10247 | newsym = *src; | |
10248 | newsym.st_info = ELF_ST_INFO (ELF_ST_BIND (src->st_info), STT_FUNC); | |
0fa3dcad PB |
10249 | if (newsym.st_shndx != SHN_UNDEF) |
10250 | { | |
10251 | /* Do this only for defined symbols. At link type, the static | |
10252 | linker will simulate the work of dynamic linker of resolving | |
10253 | symbols and will carry over the thumbness of found symbols to | |
10254 | the output symbol table. It's not clear how it happens, but | |
b0fead2b | 10255 | the thumbness of undefined symbols can well be different at |
0fa3dcad PB |
10256 | runtime, and writing '1' for them will be confusing for users |
10257 | and possibly for dynamic linker itself. | |
10258 | */ | |
10259 | newsym.st_value |= 1; | |
10260 | } | |
0beaef2b PB |
10261 | |
10262 | src = &newsym; | |
10263 | } | |
10264 | bfd_elf32_swap_symbol_out (abfd, src, cdst, shndx); | |
10265 | } | |
10266 | ||
b294bdf8 MM |
10267 | /* Add the PT_ARM_EXIDX program header. */ |
10268 | ||
10269 | static bfd_boolean | |
10270 | elf32_arm_modify_segment_map (bfd *abfd, | |
10271 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
10272 | { | |
10273 | struct elf_segment_map *m; | |
10274 | asection *sec; | |
10275 | ||
10276 | sec = bfd_get_section_by_name (abfd, ".ARM.exidx"); | |
10277 | if (sec != NULL && (sec->flags & SEC_LOAD) != 0) | |
10278 | { | |
10279 | /* If there is already a PT_ARM_EXIDX header, then we do not | |
10280 | want to add another one. This situation arises when running | |
10281 | "strip"; the input binary already has the header. */ | |
10282 | m = elf_tdata (abfd)->segment_map; | |
10283 | while (m && m->p_type != PT_ARM_EXIDX) | |
10284 | m = m->next; | |
10285 | if (!m) | |
10286 | { | |
10287 | m = bfd_zalloc (abfd, sizeof (struct elf_segment_map)); | |
10288 | if (m == NULL) | |
10289 | return FALSE; | |
10290 | m->p_type = PT_ARM_EXIDX; | |
10291 | m->count = 1; | |
10292 | m->sections[0] = sec; | |
10293 | ||
10294 | m->next = elf_tdata (abfd)->segment_map; | |
10295 | elf_tdata (abfd)->segment_map = m; | |
10296 | } | |
10297 | } | |
10298 | ||
10299 | return TRUE; | |
10300 | } | |
10301 | ||
10302 | /* We may add a PT_ARM_EXIDX program header. */ | |
10303 | ||
10304 | static int | |
a6b96beb AM |
10305 | elf32_arm_additional_program_headers (bfd *abfd, |
10306 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
b294bdf8 MM |
10307 | { |
10308 | asection *sec; | |
10309 | ||
10310 | sec = bfd_get_section_by_name (abfd, ".ARM.exidx"); | |
10311 | if (sec != NULL && (sec->flags & SEC_LOAD) != 0) | |
10312 | return 1; | |
10313 | else | |
10314 | return 0; | |
10315 | } | |
10316 | ||
fcb93ecf PB |
10317 | /* We have two function types: STT_FUNC and STT_ARM_TFUNC. */ |
10318 | static bfd_boolean | |
10319 | elf32_arm_is_function_type (unsigned int type) | |
10320 | { | |
10321 | return (type == STT_FUNC) || (type == STT_ARM_TFUNC); | |
10322 | } | |
10323 | ||
0beaef2b PB |
10324 | /* We use this to override swap_symbol_in and swap_symbol_out. */ |
10325 | const struct elf_size_info elf32_arm_size_info = { | |
10326 | sizeof (Elf32_External_Ehdr), | |
10327 | sizeof (Elf32_External_Phdr), | |
10328 | sizeof (Elf32_External_Shdr), | |
10329 | sizeof (Elf32_External_Rel), | |
10330 | sizeof (Elf32_External_Rela), | |
10331 | sizeof (Elf32_External_Sym), | |
10332 | sizeof (Elf32_External_Dyn), | |
10333 | sizeof (Elf_External_Note), | |
10334 | 4, | |
10335 | 1, | |
10336 | 32, 2, | |
10337 | ELFCLASS32, EV_CURRENT, | |
10338 | bfd_elf32_write_out_phdrs, | |
10339 | bfd_elf32_write_shdrs_and_ehdr, | |
1489a3a0 | 10340 | bfd_elf32_checksum_contents, |
0beaef2b PB |
10341 | bfd_elf32_write_relocs, |
10342 | elf32_arm_swap_symbol_in, | |
10343 | elf32_arm_swap_symbol_out, | |
10344 | bfd_elf32_slurp_reloc_table, | |
10345 | bfd_elf32_slurp_symbol_table, | |
10346 | bfd_elf32_swap_dyn_in, | |
10347 | bfd_elf32_swap_dyn_out, | |
10348 | bfd_elf32_swap_reloc_in, | |
10349 | bfd_elf32_swap_reloc_out, | |
10350 | bfd_elf32_swap_reloca_in, | |
10351 | bfd_elf32_swap_reloca_out | |
10352 | }; | |
10353 | ||
252b5132 RH |
10354 | #define ELF_ARCH bfd_arch_arm |
10355 | #define ELF_MACHINE_CODE EM_ARM | |
d0facd1b NC |
10356 | #ifdef __QNXTARGET__ |
10357 | #define ELF_MAXPAGESIZE 0x1000 | |
10358 | #else | |
f21f3fe0 | 10359 | #define ELF_MAXPAGESIZE 0x8000 |
d0facd1b | 10360 | #endif |
b1342370 | 10361 | #define ELF_MINPAGESIZE 0x1000 |
24718e3b | 10362 | #define ELF_COMMONPAGESIZE 0x1000 |
252b5132 | 10363 | |
ba93b8ac DJ |
10364 | #define bfd_elf32_mkobject elf32_arm_mkobject |
10365 | ||
99e4ae17 AJ |
10366 | #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data |
10367 | #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data | |
252b5132 RH |
10368 | #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags |
10369 | #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data | |
10370 | #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create | |
dc810e39 | 10371 | #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup |
157090f7 | 10372 | #define bfd_elf32_bfd_reloc_name_lookup elf32_arm_reloc_name_lookup |
252b5132 | 10373 | #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line |
4ab527b0 | 10374 | #define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info |
e489d0ae | 10375 | #define bfd_elf32_new_section_hook elf32_arm_new_section_hook |
3c9458e9 | 10376 | #define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol |
957c6e41 | 10377 | #define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup |
b25e3d87 | 10378 | #define bfd_elf32_bfd_free_cached_info elf32_arm_bfd_free_cached_info |
252b5132 RH |
10379 | |
10380 | #define elf_backend_get_symbol_type elf32_arm_get_symbol_type | |
10381 | #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook | |
6a5bb875 | 10382 | #define elf_backend_gc_mark_extra_sections elf32_arm_gc_mark_extra_sections |
252b5132 RH |
10383 | #define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook |
10384 | #define elf_backend_check_relocs elf32_arm_check_relocs | |
dc810e39 | 10385 | #define elf_backend_relocate_section elf32_arm_relocate_section |
e489d0ae | 10386 | #define elf_backend_write_section elf32_arm_write_section |
252b5132 | 10387 | #define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol |
5e681ec4 | 10388 | #define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections |
252b5132 RH |
10389 | #define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol |
10390 | #define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections | |
10391 | #define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections | |
74541ad4 | 10392 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
ba96a88f | 10393 | #define elf_backend_post_process_headers elf32_arm_post_process_headers |
99e4ae17 | 10394 | #define elf_backend_reloc_type_class elf32_arm_reloc_type_class |
c178919b | 10395 | #define elf_backend_object_p elf32_arm_object_p |
e16bb312 | 10396 | #define elf_backend_section_flags elf32_arm_section_flags |
40a18ebd NC |
10397 | #define elf_backend_fake_sections elf32_arm_fake_sections |
10398 | #define elf_backend_section_from_shdr elf32_arm_section_from_shdr | |
e16bb312 | 10399 | #define elf_backend_final_write_processing elf32_arm_final_write_processing |
5e681ec4 | 10400 | #define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol |
b7693d02 | 10401 | #define elf_backend_symbol_processing elf32_arm_symbol_processing |
0beaef2b | 10402 | #define elf_backend_size_info elf32_arm_size_info |
b294bdf8 MM |
10403 | #define elf_backend_modify_segment_map elf32_arm_modify_segment_map |
10404 | #define elf_backend_additional_program_headers \ | |
10405 | elf32_arm_additional_program_headers | |
4e617b1e PB |
10406 | #define elf_backend_output_arch_local_syms \ |
10407 | elf32_arm_output_arch_local_syms | |
a4fd1a8e PB |
10408 | #define elf_backend_begin_write_processing \ |
10409 | elf32_arm_begin_write_processing | |
fcb93ecf | 10410 | #define elf_backend_is_function_type elf32_arm_is_function_type |
252b5132 | 10411 | |
5e681ec4 | 10412 | #define elf_backend_can_refcount 1 |
252b5132 RH |
10413 | #define elf_backend_can_gc_sections 1 |
10414 | #define elf_backend_plt_readonly 1 | |
10415 | #define elf_backend_want_got_plt 1 | |
10416 | #define elf_backend_want_plt_sym 0 | |
4e7fd91e PB |
10417 | #define elf_backend_may_use_rel_p 1 |
10418 | #define elf_backend_may_use_rela_p 0 | |
10419 | #define elf_backend_default_use_rela_p 0 | |
252b5132 | 10420 | |
04f7c78d | 10421 | #define elf_backend_got_header_size 12 |
04f7c78d | 10422 | |
104d59d1 JM |
10423 | #undef elf_backend_obj_attrs_vendor |
10424 | #define elf_backend_obj_attrs_vendor "aeabi" | |
10425 | #undef elf_backend_obj_attrs_section | |
10426 | #define elf_backend_obj_attrs_section ".ARM.attributes" | |
10427 | #undef elf_backend_obj_attrs_arg_type | |
10428 | #define elf_backend_obj_attrs_arg_type elf32_arm_obj_attrs_arg_type | |
10429 | #undef elf_backend_obj_attrs_section_type | |
10430 | #define elf_backend_obj_attrs_section_type SHT_ARM_ATTRIBUTES | |
10431 | ||
252b5132 | 10432 | #include "elf32-target.h" |
7f266840 | 10433 | |
4e7fd91e PB |
10434 | /* VxWorks Targets */ |
10435 | ||
10436 | #undef TARGET_LITTLE_SYM | |
10437 | #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec | |
10438 | #undef TARGET_LITTLE_NAME | |
10439 | #define TARGET_LITTLE_NAME "elf32-littlearm-vxworks" | |
10440 | #undef TARGET_BIG_SYM | |
10441 | #define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec | |
10442 | #undef TARGET_BIG_NAME | |
10443 | #define TARGET_BIG_NAME "elf32-bigarm-vxworks" | |
10444 | ||
10445 | /* Like elf32_arm_link_hash_table_create -- but overrides | |
10446 | appropriately for VxWorks. */ | |
10447 | static struct bfd_link_hash_table * | |
10448 | elf32_arm_vxworks_link_hash_table_create (bfd *abfd) | |
10449 | { | |
10450 | struct bfd_link_hash_table *ret; | |
10451 | ||
10452 | ret = elf32_arm_link_hash_table_create (abfd); | |
10453 | if (ret) | |
10454 | { | |
10455 | struct elf32_arm_link_hash_table *htab | |
00a97672 | 10456 | = (struct elf32_arm_link_hash_table *) ret; |
4e7fd91e | 10457 | htab->use_rel = 0; |
00a97672 | 10458 | htab->vxworks_p = 1; |
4e7fd91e PB |
10459 | } |
10460 | return ret; | |
10461 | } | |
10462 | ||
00a97672 RS |
10463 | static void |
10464 | elf32_arm_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker) | |
10465 | { | |
10466 | elf32_arm_final_write_processing (abfd, linker); | |
10467 | elf_vxworks_final_write_processing (abfd, linker); | |
10468 | } | |
10469 | ||
4e7fd91e PB |
10470 | #undef elf32_bed |
10471 | #define elf32_bed elf32_arm_vxworks_bed | |
10472 | ||
10473 | #undef bfd_elf32_bfd_link_hash_table_create | |
10474 | #define bfd_elf32_bfd_link_hash_table_create \ | |
10475 | elf32_arm_vxworks_link_hash_table_create | |
00a97672 RS |
10476 | #undef elf_backend_add_symbol_hook |
10477 | #define elf_backend_add_symbol_hook \ | |
10478 | elf_vxworks_add_symbol_hook | |
10479 | #undef elf_backend_final_write_processing | |
10480 | #define elf_backend_final_write_processing \ | |
10481 | elf32_arm_vxworks_final_write_processing | |
10482 | #undef elf_backend_emit_relocs | |
10483 | #define elf_backend_emit_relocs \ | |
10484 | elf_vxworks_emit_relocs | |
4e7fd91e PB |
10485 | |
10486 | #undef elf_backend_may_use_rel_p | |
00a97672 | 10487 | #define elf_backend_may_use_rel_p 0 |
4e7fd91e | 10488 | #undef elf_backend_may_use_rela_p |
00a97672 | 10489 | #define elf_backend_may_use_rela_p 1 |
4e7fd91e | 10490 | #undef elf_backend_default_use_rela_p |
00a97672 | 10491 | #define elf_backend_default_use_rela_p 1 |
00a97672 RS |
10492 | #undef elf_backend_want_plt_sym |
10493 | #define elf_backend_want_plt_sym 1 | |
10494 | #undef ELF_MAXPAGESIZE | |
10495 | #define ELF_MAXPAGESIZE 0x1000 | |
4e7fd91e PB |
10496 | |
10497 | #include "elf32-target.h" | |
10498 | ||
10499 | ||
7f266840 DJ |
10500 | /* Symbian OS Targets */ |
10501 | ||
10502 | #undef TARGET_LITTLE_SYM | |
10503 | #define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec | |
10504 | #undef TARGET_LITTLE_NAME | |
10505 | #define TARGET_LITTLE_NAME "elf32-littlearm-symbian" | |
10506 | #undef TARGET_BIG_SYM | |
10507 | #define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec | |
10508 | #undef TARGET_BIG_NAME | |
10509 | #define TARGET_BIG_NAME "elf32-bigarm-symbian" | |
10510 | ||
10511 | /* Like elf32_arm_link_hash_table_create -- but overrides | |
10512 | appropriately for Symbian OS. */ | |
10513 | static struct bfd_link_hash_table * | |
10514 | elf32_arm_symbian_link_hash_table_create (bfd *abfd) | |
10515 | { | |
10516 | struct bfd_link_hash_table *ret; | |
10517 | ||
10518 | ret = elf32_arm_link_hash_table_create (abfd); | |
10519 | if (ret) | |
10520 | { | |
10521 | struct elf32_arm_link_hash_table *htab | |
10522 | = (struct elf32_arm_link_hash_table *)ret; | |
10523 | /* There is no PLT header for Symbian OS. */ | |
10524 | htab->plt_header_size = 0; | |
10525 | /* The PLT entries are each three instructions. */ | |
10526 | htab->plt_entry_size = 4 * NUM_ELEM (elf32_arm_symbian_plt_entry); | |
10527 | htab->symbian_p = 1; | |
33bfe774 JB |
10528 | /* Symbian uses armv5t or above, so use_blx is always true. */ |
10529 | htab->use_blx = 1; | |
67687978 | 10530 | htab->root.is_relocatable_executable = 1; |
7f266840 DJ |
10531 | } |
10532 | return ret; | |
10533 | } | |
10534 | ||
b35d266b | 10535 | static const struct bfd_elf_special_section |
551b43fd | 10536 | elf32_arm_symbian_special_sections[] = |
7f266840 | 10537 | { |
5cd3778d MM |
10538 | /* In a BPABI executable, the dynamic linking sections do not go in |
10539 | the loadable read-only segment. The post-linker may wish to | |
10540 | refer to these sections, but they are not part of the final | |
10541 | program image. */ | |
0112cd26 NC |
10542 | { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, 0 }, |
10543 | { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, 0 }, | |
10544 | { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, 0 }, | |
10545 | { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, 0 }, | |
10546 | { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, 0 }, | |
5cd3778d MM |
10547 | /* These sections do not need to be writable as the SymbianOS |
10548 | postlinker will arrange things so that no dynamic relocation is | |
10549 | required. */ | |
0112cd26 NC |
10550 | { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC }, |
10551 | { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC }, | |
10552 | { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC }, | |
10553 | { NULL, 0, 0, 0, 0 } | |
7f266840 DJ |
10554 | }; |
10555 | ||
c3c76620 | 10556 | static void |
b34af79c | 10557 | elf32_arm_symbian_begin_write_processing (bfd *abfd, |
a4fd1a8e | 10558 | struct bfd_link_info *link_info) |
c3c76620 MM |
10559 | { |
10560 | /* BPABI objects are never loaded directly by an OS kernel; they are | |
10561 | processed by a postlinker first, into an OS-specific format. If | |
10562 | the D_PAGED bit is set on the file, BFD will align segments on | |
10563 | page boundaries, so that an OS can directly map the file. With | |
10564 | BPABI objects, that just results in wasted space. In addition, | |
10565 | because we clear the D_PAGED bit, map_sections_to_segments will | |
10566 | recognize that the program headers should not be mapped into any | |
10567 | loadable segment. */ | |
10568 | abfd->flags &= ~D_PAGED; | |
a4fd1a8e | 10569 | elf32_arm_begin_write_processing(abfd, link_info); |
c3c76620 | 10570 | } |
7f266840 DJ |
10571 | |
10572 | static bfd_boolean | |
b34af79c | 10573 | elf32_arm_symbian_modify_segment_map (bfd *abfd, |
b294bdf8 | 10574 | struct bfd_link_info *info) |
7f266840 DJ |
10575 | { |
10576 | struct elf_segment_map *m; | |
10577 | asection *dynsec; | |
10578 | ||
7f266840 DJ |
10579 | /* BPABI shared libraries and executables should have a PT_DYNAMIC |
10580 | segment. However, because the .dynamic section is not marked | |
10581 | with SEC_LOAD, the generic ELF code will not create such a | |
10582 | segment. */ | |
10583 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); | |
10584 | if (dynsec) | |
10585 | { | |
8ded5a0f AM |
10586 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
10587 | if (m->p_type == PT_DYNAMIC) | |
10588 | break; | |
10589 | ||
10590 | if (m == NULL) | |
10591 | { | |
10592 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); | |
10593 | m->next = elf_tdata (abfd)->segment_map; | |
10594 | elf_tdata (abfd)->segment_map = m; | |
10595 | } | |
7f266840 DJ |
10596 | } |
10597 | ||
b294bdf8 MM |
10598 | /* Also call the generic arm routine. */ |
10599 | return elf32_arm_modify_segment_map (abfd, info); | |
7f266840 DJ |
10600 | } |
10601 | ||
10602 | #undef elf32_bed | |
10603 | #define elf32_bed elf32_arm_symbian_bed | |
10604 | ||
10605 | /* The dynamic sections are not allocated on SymbianOS; the postlinker | |
10606 | will process them and then discard them. */ | |
10607 | #undef ELF_DYNAMIC_SEC_FLAGS | |
10608 | #define ELF_DYNAMIC_SEC_FLAGS \ | |
10609 | (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED) | |
10610 | ||
10611 | #undef bfd_elf32_bfd_link_hash_table_create | |
10612 | #define bfd_elf32_bfd_link_hash_table_create \ | |
10613 | elf32_arm_symbian_link_hash_table_create | |
00a97672 | 10614 | #undef elf_backend_add_symbol_hook |
7f266840 | 10615 | |
29ef7005 L |
10616 | #undef elf_backend_special_sections |
10617 | #define elf_backend_special_sections elf32_arm_symbian_special_sections | |
7f266840 | 10618 | |
c3c76620 MM |
10619 | #undef elf_backend_begin_write_processing |
10620 | #define elf_backend_begin_write_processing \ | |
10621 | elf32_arm_symbian_begin_write_processing | |
00a97672 RS |
10622 | #undef elf_backend_final_write_processing |
10623 | #define elf_backend_final_write_processing \ | |
10624 | elf32_arm_final_write_processing | |
10625 | #undef elf_backend_emit_relocs | |
c3c76620 | 10626 | |
7f266840 DJ |
10627 | #undef elf_backend_modify_segment_map |
10628 | #define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map | |
10629 | ||
10630 | /* There is no .got section for BPABI objects, and hence no header. */ | |
10631 | #undef elf_backend_got_header_size | |
10632 | #define elf_backend_got_header_size 0 | |
10633 | ||
10634 | /* Similarly, there is no .got.plt section. */ | |
10635 | #undef elf_backend_want_got_plt | |
10636 | #define elf_backend_want_got_plt 0 | |
10637 | ||
4e7fd91e | 10638 | #undef elf_backend_may_use_rel_p |
00a97672 | 10639 | #define elf_backend_may_use_rel_p 1 |
4e7fd91e | 10640 | #undef elf_backend_may_use_rela_p |
00a97672 | 10641 | #define elf_backend_may_use_rela_p 0 |
4e7fd91e | 10642 | #undef elf_backend_default_use_rela_p |
00a97672 | 10643 | #define elf_backend_default_use_rela_p 0 |
00a97672 RS |
10644 | #undef elf_backend_want_plt_sym |
10645 | #define elf_backend_want_plt_sym 0 | |
10646 | #undef ELF_MAXPAGESIZE | |
10647 | #define ELF_MAXPAGESIZE 0x8000 | |
4e7fd91e | 10648 | |
7f266840 | 10649 | #include "elf32-target.h" |