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 | |
6e6718a3 | 22 | #include "sysdep.h" |
2468f9c9 PB |
23 | #include <limits.h> |
24 | ||
3db64b00 | 25 | #include "bfd.h" |
00a97672 | 26 | #include "libiberty.h" |
7f266840 DJ |
27 | #include "libbfd.h" |
28 | #include "elf-bfd.h" | |
00a97672 | 29 | #include "elf-vxworks.h" |
ee065d83 | 30 | #include "elf/arm.h" |
7f266840 | 31 | |
00a97672 RS |
32 | /* Return the relocation section associated with NAME. HTAB is the |
33 | bfd's elf32_arm_link_hash_entry. */ | |
34 | #define RELOC_SECTION(HTAB, NAME) \ | |
35 | ((HTAB)->use_rel ? ".rel" NAME : ".rela" NAME) | |
36 | ||
37 | /* Return size of a relocation entry. HTAB is the bfd's | |
38 | elf32_arm_link_hash_entry. */ | |
39 | #define RELOC_SIZE(HTAB) \ | |
40 | ((HTAB)->use_rel \ | |
41 | ? sizeof (Elf32_External_Rel) \ | |
42 | : sizeof (Elf32_External_Rela)) | |
43 | ||
44 | /* Return function to swap relocations in. HTAB is the bfd's | |
45 | elf32_arm_link_hash_entry. */ | |
46 | #define SWAP_RELOC_IN(HTAB) \ | |
47 | ((HTAB)->use_rel \ | |
48 | ? bfd_elf32_swap_reloc_in \ | |
49 | : bfd_elf32_swap_reloca_in) | |
50 | ||
51 | /* Return function to swap relocations out. HTAB is the bfd's | |
52 | elf32_arm_link_hash_entry. */ | |
53 | #define SWAP_RELOC_OUT(HTAB) \ | |
54 | ((HTAB)->use_rel \ | |
55 | ? bfd_elf32_swap_reloc_out \ | |
56 | : bfd_elf32_swap_reloca_out) | |
57 | ||
7f266840 DJ |
58 | #define elf_info_to_howto 0 |
59 | #define elf_info_to_howto_rel elf32_arm_info_to_howto | |
60 | ||
61 | #define ARM_ELF_ABI_VERSION 0 | |
62 | #define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM | |
63 | ||
24718e3b | 64 | static struct elf_backend_data elf32_arm_vxworks_bed; |
00a97672 | 65 | |
3e6b1042 DJ |
66 | static bfd_boolean elf32_arm_write_section (bfd *output_bfd, |
67 | struct bfd_link_info *link_info, | |
68 | asection *sec, | |
69 | bfd_byte *contents); | |
70 | ||
7f266840 DJ |
71 | /* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g. |
72 | R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO | |
73 | in that slot. */ | |
74 | ||
c19d1205 | 75 | static reloc_howto_type elf32_arm_howto_table_1[] = |
7f266840 | 76 | { |
8029a119 | 77 | /* No relocation. */ |
7f266840 DJ |
78 | HOWTO (R_ARM_NONE, /* type */ |
79 | 0, /* rightshift */ | |
80 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
81 | 0, /* bitsize */ | |
82 | FALSE, /* pc_relative */ | |
83 | 0, /* bitpos */ | |
84 | complain_overflow_dont,/* complain_on_overflow */ | |
85 | bfd_elf_generic_reloc, /* special_function */ | |
86 | "R_ARM_NONE", /* name */ | |
87 | FALSE, /* partial_inplace */ | |
88 | 0, /* src_mask */ | |
89 | 0, /* dst_mask */ | |
90 | FALSE), /* pcrel_offset */ | |
91 | ||
92 | HOWTO (R_ARM_PC24, /* type */ | |
93 | 2, /* rightshift */ | |
94 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
95 | 24, /* bitsize */ | |
96 | TRUE, /* pc_relative */ | |
97 | 0, /* bitpos */ | |
98 | complain_overflow_signed,/* complain_on_overflow */ | |
99 | bfd_elf_generic_reloc, /* special_function */ | |
100 | "R_ARM_PC24", /* name */ | |
101 | FALSE, /* partial_inplace */ | |
102 | 0x00ffffff, /* src_mask */ | |
103 | 0x00ffffff, /* dst_mask */ | |
104 | TRUE), /* pcrel_offset */ | |
105 | ||
106 | /* 32 bit absolute */ | |
107 | HOWTO (R_ARM_ABS32, /* type */ | |
108 | 0, /* rightshift */ | |
109 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
110 | 32, /* bitsize */ | |
111 | FALSE, /* pc_relative */ | |
112 | 0, /* bitpos */ | |
113 | complain_overflow_bitfield,/* complain_on_overflow */ | |
114 | bfd_elf_generic_reloc, /* special_function */ | |
115 | "R_ARM_ABS32", /* name */ | |
116 | FALSE, /* partial_inplace */ | |
117 | 0xffffffff, /* src_mask */ | |
118 | 0xffffffff, /* dst_mask */ | |
119 | FALSE), /* pcrel_offset */ | |
120 | ||
121 | /* standard 32bit pc-relative reloc */ | |
122 | HOWTO (R_ARM_REL32, /* type */ | |
123 | 0, /* rightshift */ | |
124 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
125 | 32, /* bitsize */ | |
126 | TRUE, /* pc_relative */ | |
127 | 0, /* bitpos */ | |
128 | complain_overflow_bitfield,/* complain_on_overflow */ | |
129 | bfd_elf_generic_reloc, /* special_function */ | |
130 | "R_ARM_REL32", /* name */ | |
131 | FALSE, /* partial_inplace */ | |
132 | 0xffffffff, /* src_mask */ | |
133 | 0xffffffff, /* dst_mask */ | |
134 | TRUE), /* pcrel_offset */ | |
135 | ||
c19d1205 | 136 | /* 8 bit absolute - R_ARM_LDR_PC_G0 in AAELF */ |
4962c51a | 137 | HOWTO (R_ARM_LDR_PC_G0, /* type */ |
7f266840 DJ |
138 | 0, /* rightshift */ |
139 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
4962c51a MS |
140 | 32, /* bitsize */ |
141 | TRUE, /* pc_relative */ | |
7f266840 | 142 | 0, /* bitpos */ |
4962c51a | 143 | complain_overflow_dont,/* complain_on_overflow */ |
7f266840 | 144 | bfd_elf_generic_reloc, /* special_function */ |
4962c51a | 145 | "R_ARM_LDR_PC_G0", /* name */ |
7f266840 | 146 | FALSE, /* partial_inplace */ |
4962c51a MS |
147 | 0xffffffff, /* src_mask */ |
148 | 0xffffffff, /* dst_mask */ | |
149 | TRUE), /* pcrel_offset */ | |
7f266840 DJ |
150 | |
151 | /* 16 bit absolute */ | |
152 | HOWTO (R_ARM_ABS16, /* type */ | |
153 | 0, /* rightshift */ | |
154 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
155 | 16, /* bitsize */ | |
156 | FALSE, /* pc_relative */ | |
157 | 0, /* bitpos */ | |
158 | complain_overflow_bitfield,/* complain_on_overflow */ | |
159 | bfd_elf_generic_reloc, /* special_function */ | |
160 | "R_ARM_ABS16", /* name */ | |
161 | FALSE, /* partial_inplace */ | |
162 | 0x0000ffff, /* src_mask */ | |
163 | 0x0000ffff, /* dst_mask */ | |
164 | FALSE), /* pcrel_offset */ | |
165 | ||
166 | /* 12 bit absolute */ | |
167 | HOWTO (R_ARM_ABS12, /* type */ | |
168 | 0, /* rightshift */ | |
169 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
170 | 12, /* bitsize */ | |
171 | FALSE, /* pc_relative */ | |
172 | 0, /* bitpos */ | |
173 | complain_overflow_bitfield,/* complain_on_overflow */ | |
174 | bfd_elf_generic_reloc, /* special_function */ | |
175 | "R_ARM_ABS12", /* name */ | |
176 | FALSE, /* partial_inplace */ | |
00a97672 RS |
177 | 0x00000fff, /* src_mask */ |
178 | 0x00000fff, /* dst_mask */ | |
7f266840 DJ |
179 | FALSE), /* pcrel_offset */ |
180 | ||
181 | HOWTO (R_ARM_THM_ABS5, /* type */ | |
182 | 6, /* rightshift */ | |
183 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
184 | 5, /* bitsize */ | |
185 | FALSE, /* pc_relative */ | |
186 | 0, /* bitpos */ | |
187 | complain_overflow_bitfield,/* complain_on_overflow */ | |
188 | bfd_elf_generic_reloc, /* special_function */ | |
189 | "R_ARM_THM_ABS5", /* name */ | |
190 | FALSE, /* partial_inplace */ | |
191 | 0x000007e0, /* src_mask */ | |
192 | 0x000007e0, /* dst_mask */ | |
193 | FALSE), /* pcrel_offset */ | |
194 | ||
195 | /* 8 bit absolute */ | |
196 | HOWTO (R_ARM_ABS8, /* type */ | |
197 | 0, /* rightshift */ | |
198 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
199 | 8, /* bitsize */ | |
200 | FALSE, /* pc_relative */ | |
201 | 0, /* bitpos */ | |
202 | complain_overflow_bitfield,/* complain_on_overflow */ | |
203 | bfd_elf_generic_reloc, /* special_function */ | |
204 | "R_ARM_ABS8", /* name */ | |
205 | FALSE, /* partial_inplace */ | |
206 | 0x000000ff, /* src_mask */ | |
207 | 0x000000ff, /* dst_mask */ | |
208 | FALSE), /* pcrel_offset */ | |
209 | ||
210 | HOWTO (R_ARM_SBREL32, /* type */ | |
211 | 0, /* rightshift */ | |
212 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
213 | 32, /* bitsize */ | |
214 | FALSE, /* pc_relative */ | |
215 | 0, /* bitpos */ | |
216 | complain_overflow_dont,/* complain_on_overflow */ | |
217 | bfd_elf_generic_reloc, /* special_function */ | |
218 | "R_ARM_SBREL32", /* name */ | |
219 | FALSE, /* partial_inplace */ | |
220 | 0xffffffff, /* src_mask */ | |
221 | 0xffffffff, /* dst_mask */ | |
222 | FALSE), /* pcrel_offset */ | |
223 | ||
c19d1205 | 224 | HOWTO (R_ARM_THM_CALL, /* type */ |
7f266840 DJ |
225 | 1, /* rightshift */ |
226 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
e95de063 | 227 | 25, /* bitsize */ |
7f266840 DJ |
228 | TRUE, /* pc_relative */ |
229 | 0, /* bitpos */ | |
230 | complain_overflow_signed,/* complain_on_overflow */ | |
231 | bfd_elf_generic_reloc, /* special_function */ | |
c19d1205 | 232 | "R_ARM_THM_CALL", /* name */ |
7f266840 DJ |
233 | FALSE, /* partial_inplace */ |
234 | 0x07ff07ff, /* src_mask */ | |
235 | 0x07ff07ff, /* dst_mask */ | |
236 | TRUE), /* pcrel_offset */ | |
237 | ||
238 | HOWTO (R_ARM_THM_PC8, /* type */ | |
239 | 1, /* rightshift */ | |
240 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
241 | 8, /* bitsize */ | |
242 | TRUE, /* pc_relative */ | |
243 | 0, /* bitpos */ | |
244 | complain_overflow_signed,/* complain_on_overflow */ | |
245 | bfd_elf_generic_reloc, /* special_function */ | |
246 | "R_ARM_THM_PC8", /* name */ | |
247 | FALSE, /* partial_inplace */ | |
248 | 0x000000ff, /* src_mask */ | |
249 | 0x000000ff, /* dst_mask */ | |
250 | TRUE), /* pcrel_offset */ | |
251 | ||
c19d1205 | 252 | HOWTO (R_ARM_BREL_ADJ, /* type */ |
7f266840 DJ |
253 | 1, /* rightshift */ |
254 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
c19d1205 ZW |
255 | 32, /* bitsize */ |
256 | FALSE, /* pc_relative */ | |
7f266840 DJ |
257 | 0, /* bitpos */ |
258 | complain_overflow_signed,/* complain_on_overflow */ | |
259 | bfd_elf_generic_reloc, /* special_function */ | |
c19d1205 | 260 | "R_ARM_BREL_ADJ", /* name */ |
7f266840 | 261 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
262 | 0xffffffff, /* src_mask */ |
263 | 0xffffffff, /* dst_mask */ | |
264 | FALSE), /* pcrel_offset */ | |
7f266840 DJ |
265 | |
266 | HOWTO (R_ARM_SWI24, /* type */ | |
267 | 0, /* rightshift */ | |
268 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
269 | 0, /* bitsize */ | |
270 | FALSE, /* pc_relative */ | |
271 | 0, /* bitpos */ | |
272 | complain_overflow_signed,/* complain_on_overflow */ | |
273 | bfd_elf_generic_reloc, /* special_function */ | |
274 | "R_ARM_SWI24", /* name */ | |
275 | FALSE, /* partial_inplace */ | |
276 | 0x00000000, /* src_mask */ | |
277 | 0x00000000, /* dst_mask */ | |
278 | FALSE), /* pcrel_offset */ | |
279 | ||
280 | HOWTO (R_ARM_THM_SWI8, /* type */ | |
281 | 0, /* rightshift */ | |
282 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
283 | 0, /* bitsize */ | |
284 | FALSE, /* pc_relative */ | |
285 | 0, /* bitpos */ | |
286 | complain_overflow_signed,/* complain_on_overflow */ | |
287 | bfd_elf_generic_reloc, /* special_function */ | |
288 | "R_ARM_SWI8", /* name */ | |
289 | FALSE, /* partial_inplace */ | |
290 | 0x00000000, /* src_mask */ | |
291 | 0x00000000, /* dst_mask */ | |
292 | FALSE), /* pcrel_offset */ | |
293 | ||
294 | /* BLX instruction for the ARM. */ | |
295 | HOWTO (R_ARM_XPC25, /* type */ | |
296 | 2, /* rightshift */ | |
297 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
298 | 25, /* bitsize */ | |
299 | TRUE, /* pc_relative */ | |
300 | 0, /* bitpos */ | |
301 | complain_overflow_signed,/* complain_on_overflow */ | |
302 | bfd_elf_generic_reloc, /* special_function */ | |
303 | "R_ARM_XPC25", /* name */ | |
304 | FALSE, /* partial_inplace */ | |
305 | 0x00ffffff, /* src_mask */ | |
306 | 0x00ffffff, /* dst_mask */ | |
307 | TRUE), /* pcrel_offset */ | |
308 | ||
309 | /* BLX instruction for the Thumb. */ | |
310 | HOWTO (R_ARM_THM_XPC22, /* type */ | |
311 | 2, /* rightshift */ | |
312 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
313 | 22, /* bitsize */ | |
314 | TRUE, /* pc_relative */ | |
315 | 0, /* bitpos */ | |
316 | complain_overflow_signed,/* complain_on_overflow */ | |
317 | bfd_elf_generic_reloc, /* special_function */ | |
318 | "R_ARM_THM_XPC22", /* name */ | |
319 | FALSE, /* partial_inplace */ | |
320 | 0x07ff07ff, /* src_mask */ | |
321 | 0x07ff07ff, /* dst_mask */ | |
322 | TRUE), /* pcrel_offset */ | |
323 | ||
ba93b8ac | 324 | /* Dynamic TLS relocations. */ |
7f266840 | 325 | |
ba93b8ac DJ |
326 | HOWTO (R_ARM_TLS_DTPMOD32, /* type */ |
327 | 0, /* rightshift */ | |
328 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
329 | 32, /* bitsize */ | |
330 | FALSE, /* pc_relative */ | |
331 | 0, /* bitpos */ | |
332 | complain_overflow_bitfield,/* complain_on_overflow */ | |
333 | bfd_elf_generic_reloc, /* special_function */ | |
334 | "R_ARM_TLS_DTPMOD32", /* name */ | |
335 | TRUE, /* partial_inplace */ | |
336 | 0xffffffff, /* src_mask */ | |
337 | 0xffffffff, /* dst_mask */ | |
338 | FALSE), /* pcrel_offset */ | |
7f266840 | 339 | |
ba93b8ac DJ |
340 | HOWTO (R_ARM_TLS_DTPOFF32, /* type */ |
341 | 0, /* rightshift */ | |
342 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
343 | 32, /* bitsize */ | |
344 | FALSE, /* pc_relative */ | |
345 | 0, /* bitpos */ | |
346 | complain_overflow_bitfield,/* complain_on_overflow */ | |
347 | bfd_elf_generic_reloc, /* special_function */ | |
348 | "R_ARM_TLS_DTPOFF32", /* name */ | |
349 | TRUE, /* partial_inplace */ | |
350 | 0xffffffff, /* src_mask */ | |
351 | 0xffffffff, /* dst_mask */ | |
352 | FALSE), /* pcrel_offset */ | |
7f266840 | 353 | |
ba93b8ac DJ |
354 | HOWTO (R_ARM_TLS_TPOFF32, /* type */ |
355 | 0, /* rightshift */ | |
356 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
357 | 32, /* bitsize */ | |
358 | FALSE, /* pc_relative */ | |
359 | 0, /* bitpos */ | |
360 | complain_overflow_bitfield,/* complain_on_overflow */ | |
361 | bfd_elf_generic_reloc, /* special_function */ | |
362 | "R_ARM_TLS_TPOFF32", /* name */ | |
363 | TRUE, /* partial_inplace */ | |
364 | 0xffffffff, /* src_mask */ | |
365 | 0xffffffff, /* dst_mask */ | |
366 | FALSE), /* pcrel_offset */ | |
7f266840 DJ |
367 | |
368 | /* Relocs used in ARM Linux */ | |
369 | ||
370 | HOWTO (R_ARM_COPY, /* type */ | |
371 | 0, /* rightshift */ | |
372 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
373 | 32, /* bitsize */ | |
374 | FALSE, /* pc_relative */ | |
375 | 0, /* bitpos */ | |
376 | complain_overflow_bitfield,/* complain_on_overflow */ | |
377 | bfd_elf_generic_reloc, /* special_function */ | |
378 | "R_ARM_COPY", /* name */ | |
379 | TRUE, /* partial_inplace */ | |
380 | 0xffffffff, /* src_mask */ | |
381 | 0xffffffff, /* dst_mask */ | |
382 | FALSE), /* pcrel_offset */ | |
383 | ||
384 | HOWTO (R_ARM_GLOB_DAT, /* type */ | |
385 | 0, /* rightshift */ | |
386 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
387 | 32, /* bitsize */ | |
388 | FALSE, /* pc_relative */ | |
389 | 0, /* bitpos */ | |
390 | complain_overflow_bitfield,/* complain_on_overflow */ | |
391 | bfd_elf_generic_reloc, /* special_function */ | |
392 | "R_ARM_GLOB_DAT", /* name */ | |
393 | TRUE, /* partial_inplace */ | |
394 | 0xffffffff, /* src_mask */ | |
395 | 0xffffffff, /* dst_mask */ | |
396 | FALSE), /* pcrel_offset */ | |
397 | ||
398 | HOWTO (R_ARM_JUMP_SLOT, /* type */ | |
399 | 0, /* rightshift */ | |
400 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
401 | 32, /* bitsize */ | |
402 | FALSE, /* pc_relative */ | |
403 | 0, /* bitpos */ | |
404 | complain_overflow_bitfield,/* complain_on_overflow */ | |
405 | bfd_elf_generic_reloc, /* special_function */ | |
406 | "R_ARM_JUMP_SLOT", /* name */ | |
407 | TRUE, /* partial_inplace */ | |
408 | 0xffffffff, /* src_mask */ | |
409 | 0xffffffff, /* dst_mask */ | |
410 | FALSE), /* pcrel_offset */ | |
411 | ||
412 | HOWTO (R_ARM_RELATIVE, /* type */ | |
413 | 0, /* rightshift */ | |
414 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
415 | 32, /* bitsize */ | |
416 | FALSE, /* pc_relative */ | |
417 | 0, /* bitpos */ | |
418 | complain_overflow_bitfield,/* complain_on_overflow */ | |
419 | bfd_elf_generic_reloc, /* special_function */ | |
420 | "R_ARM_RELATIVE", /* name */ | |
421 | TRUE, /* partial_inplace */ | |
422 | 0xffffffff, /* src_mask */ | |
423 | 0xffffffff, /* dst_mask */ | |
424 | FALSE), /* pcrel_offset */ | |
425 | ||
c19d1205 | 426 | HOWTO (R_ARM_GOTOFF32, /* type */ |
7f266840 DJ |
427 | 0, /* rightshift */ |
428 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
429 | 32, /* bitsize */ | |
430 | FALSE, /* pc_relative */ | |
431 | 0, /* bitpos */ | |
432 | complain_overflow_bitfield,/* complain_on_overflow */ | |
433 | bfd_elf_generic_reloc, /* special_function */ | |
c19d1205 | 434 | "R_ARM_GOTOFF32", /* name */ |
7f266840 DJ |
435 | TRUE, /* partial_inplace */ |
436 | 0xffffffff, /* src_mask */ | |
437 | 0xffffffff, /* dst_mask */ | |
438 | FALSE), /* pcrel_offset */ | |
439 | ||
440 | HOWTO (R_ARM_GOTPC, /* type */ | |
441 | 0, /* rightshift */ | |
442 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
443 | 32, /* bitsize */ | |
444 | TRUE, /* pc_relative */ | |
445 | 0, /* bitpos */ | |
446 | complain_overflow_bitfield,/* complain_on_overflow */ | |
447 | bfd_elf_generic_reloc, /* special_function */ | |
448 | "R_ARM_GOTPC", /* name */ | |
449 | TRUE, /* partial_inplace */ | |
450 | 0xffffffff, /* src_mask */ | |
451 | 0xffffffff, /* dst_mask */ | |
452 | TRUE), /* pcrel_offset */ | |
453 | ||
454 | HOWTO (R_ARM_GOT32, /* type */ | |
455 | 0, /* rightshift */ | |
456 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
457 | 32, /* bitsize */ | |
458 | FALSE, /* pc_relative */ | |
459 | 0, /* bitpos */ | |
460 | complain_overflow_bitfield,/* complain_on_overflow */ | |
461 | bfd_elf_generic_reloc, /* special_function */ | |
462 | "R_ARM_GOT32", /* name */ | |
463 | TRUE, /* partial_inplace */ | |
464 | 0xffffffff, /* src_mask */ | |
465 | 0xffffffff, /* dst_mask */ | |
466 | FALSE), /* pcrel_offset */ | |
467 | ||
468 | HOWTO (R_ARM_PLT32, /* type */ | |
469 | 2, /* rightshift */ | |
470 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
ce490eda | 471 | 24, /* bitsize */ |
7f266840 DJ |
472 | TRUE, /* pc_relative */ |
473 | 0, /* bitpos */ | |
474 | complain_overflow_bitfield,/* complain_on_overflow */ | |
475 | bfd_elf_generic_reloc, /* special_function */ | |
476 | "R_ARM_PLT32", /* name */ | |
ce490eda | 477 | FALSE, /* partial_inplace */ |
7f266840 DJ |
478 | 0x00ffffff, /* src_mask */ |
479 | 0x00ffffff, /* dst_mask */ | |
480 | TRUE), /* pcrel_offset */ | |
481 | ||
482 | HOWTO (R_ARM_CALL, /* type */ | |
483 | 2, /* rightshift */ | |
484 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
485 | 24, /* bitsize */ | |
486 | TRUE, /* pc_relative */ | |
487 | 0, /* bitpos */ | |
488 | complain_overflow_signed,/* complain_on_overflow */ | |
489 | bfd_elf_generic_reloc, /* special_function */ | |
490 | "R_ARM_CALL", /* name */ | |
491 | FALSE, /* partial_inplace */ | |
492 | 0x00ffffff, /* src_mask */ | |
493 | 0x00ffffff, /* dst_mask */ | |
494 | TRUE), /* pcrel_offset */ | |
495 | ||
496 | HOWTO (R_ARM_JUMP24, /* type */ | |
497 | 2, /* rightshift */ | |
498 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
499 | 24, /* bitsize */ | |
500 | TRUE, /* pc_relative */ | |
501 | 0, /* bitpos */ | |
502 | complain_overflow_signed,/* complain_on_overflow */ | |
503 | bfd_elf_generic_reloc, /* special_function */ | |
504 | "R_ARM_JUMP24", /* name */ | |
505 | FALSE, /* partial_inplace */ | |
506 | 0x00ffffff, /* src_mask */ | |
507 | 0x00ffffff, /* dst_mask */ | |
508 | TRUE), /* pcrel_offset */ | |
509 | ||
c19d1205 ZW |
510 | HOWTO (R_ARM_THM_JUMP24, /* type */ |
511 | 1, /* rightshift */ | |
512 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
513 | 24, /* bitsize */ | |
514 | TRUE, /* pc_relative */ | |
7f266840 | 515 | 0, /* bitpos */ |
c19d1205 | 516 | complain_overflow_signed,/* complain_on_overflow */ |
7f266840 | 517 | bfd_elf_generic_reloc, /* special_function */ |
c19d1205 | 518 | "R_ARM_THM_JUMP24", /* name */ |
7f266840 | 519 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
520 | 0x07ff2fff, /* src_mask */ |
521 | 0x07ff2fff, /* dst_mask */ | |
522 | TRUE), /* pcrel_offset */ | |
7f266840 | 523 | |
c19d1205 | 524 | HOWTO (R_ARM_BASE_ABS, /* type */ |
7f266840 | 525 | 0, /* rightshift */ |
c19d1205 ZW |
526 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
527 | 32, /* bitsize */ | |
7f266840 DJ |
528 | FALSE, /* pc_relative */ |
529 | 0, /* bitpos */ | |
530 | complain_overflow_dont,/* complain_on_overflow */ | |
531 | bfd_elf_generic_reloc, /* special_function */ | |
c19d1205 | 532 | "R_ARM_BASE_ABS", /* name */ |
7f266840 | 533 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
534 | 0xffffffff, /* src_mask */ |
535 | 0xffffffff, /* dst_mask */ | |
7f266840 DJ |
536 | FALSE), /* pcrel_offset */ |
537 | ||
538 | HOWTO (R_ARM_ALU_PCREL7_0, /* type */ | |
539 | 0, /* rightshift */ | |
540 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
541 | 12, /* bitsize */ | |
542 | TRUE, /* pc_relative */ | |
543 | 0, /* bitpos */ | |
544 | complain_overflow_dont,/* complain_on_overflow */ | |
545 | bfd_elf_generic_reloc, /* special_function */ | |
546 | "R_ARM_ALU_PCREL_7_0", /* name */ | |
547 | FALSE, /* partial_inplace */ | |
548 | 0x00000fff, /* src_mask */ | |
549 | 0x00000fff, /* dst_mask */ | |
550 | TRUE), /* pcrel_offset */ | |
551 | ||
552 | HOWTO (R_ARM_ALU_PCREL15_8, /* type */ | |
553 | 0, /* rightshift */ | |
554 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
555 | 12, /* bitsize */ | |
556 | TRUE, /* pc_relative */ | |
557 | 8, /* bitpos */ | |
558 | complain_overflow_dont,/* complain_on_overflow */ | |
559 | bfd_elf_generic_reloc, /* special_function */ | |
560 | "R_ARM_ALU_PCREL_15_8",/* name */ | |
561 | FALSE, /* partial_inplace */ | |
562 | 0x00000fff, /* src_mask */ | |
563 | 0x00000fff, /* dst_mask */ | |
564 | TRUE), /* pcrel_offset */ | |
565 | ||
566 | HOWTO (R_ARM_ALU_PCREL23_15, /* type */ | |
567 | 0, /* rightshift */ | |
568 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
569 | 12, /* bitsize */ | |
570 | TRUE, /* pc_relative */ | |
571 | 16, /* bitpos */ | |
572 | complain_overflow_dont,/* complain_on_overflow */ | |
573 | bfd_elf_generic_reloc, /* special_function */ | |
574 | "R_ARM_ALU_PCREL_23_15",/* name */ | |
575 | FALSE, /* partial_inplace */ | |
576 | 0x00000fff, /* src_mask */ | |
577 | 0x00000fff, /* dst_mask */ | |
578 | TRUE), /* pcrel_offset */ | |
579 | ||
580 | HOWTO (R_ARM_LDR_SBREL_11_0, /* type */ | |
581 | 0, /* rightshift */ | |
582 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
583 | 12, /* bitsize */ | |
584 | FALSE, /* pc_relative */ | |
585 | 0, /* bitpos */ | |
586 | complain_overflow_dont,/* complain_on_overflow */ | |
587 | bfd_elf_generic_reloc, /* special_function */ | |
588 | "R_ARM_LDR_SBREL_11_0",/* name */ | |
589 | FALSE, /* partial_inplace */ | |
590 | 0x00000fff, /* src_mask */ | |
591 | 0x00000fff, /* dst_mask */ | |
592 | FALSE), /* pcrel_offset */ | |
593 | ||
594 | HOWTO (R_ARM_ALU_SBREL_19_12, /* type */ | |
595 | 0, /* rightshift */ | |
596 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
597 | 8, /* bitsize */ | |
598 | FALSE, /* pc_relative */ | |
599 | 12, /* bitpos */ | |
600 | complain_overflow_dont,/* complain_on_overflow */ | |
601 | bfd_elf_generic_reloc, /* special_function */ | |
602 | "R_ARM_ALU_SBREL_19_12",/* name */ | |
603 | FALSE, /* partial_inplace */ | |
604 | 0x000ff000, /* src_mask */ | |
605 | 0x000ff000, /* dst_mask */ | |
606 | FALSE), /* pcrel_offset */ | |
607 | ||
608 | HOWTO (R_ARM_ALU_SBREL_27_20, /* type */ | |
609 | 0, /* rightshift */ | |
610 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
611 | 8, /* bitsize */ | |
612 | FALSE, /* pc_relative */ | |
613 | 20, /* bitpos */ | |
614 | complain_overflow_dont,/* complain_on_overflow */ | |
615 | bfd_elf_generic_reloc, /* special_function */ | |
616 | "R_ARM_ALU_SBREL_27_20",/* name */ | |
617 | FALSE, /* partial_inplace */ | |
618 | 0x0ff00000, /* src_mask */ | |
619 | 0x0ff00000, /* dst_mask */ | |
620 | FALSE), /* pcrel_offset */ | |
621 | ||
622 | HOWTO (R_ARM_TARGET1, /* type */ | |
623 | 0, /* rightshift */ | |
624 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
625 | 32, /* bitsize */ | |
626 | FALSE, /* pc_relative */ | |
627 | 0, /* bitpos */ | |
628 | complain_overflow_dont,/* complain_on_overflow */ | |
629 | bfd_elf_generic_reloc, /* special_function */ | |
630 | "R_ARM_TARGET1", /* name */ | |
631 | FALSE, /* partial_inplace */ | |
632 | 0xffffffff, /* src_mask */ | |
633 | 0xffffffff, /* dst_mask */ | |
634 | FALSE), /* pcrel_offset */ | |
635 | ||
636 | HOWTO (R_ARM_ROSEGREL32, /* type */ | |
637 | 0, /* rightshift */ | |
638 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
639 | 32, /* bitsize */ | |
640 | FALSE, /* pc_relative */ | |
641 | 0, /* bitpos */ | |
642 | complain_overflow_dont,/* complain_on_overflow */ | |
643 | bfd_elf_generic_reloc, /* special_function */ | |
644 | "R_ARM_ROSEGREL32", /* name */ | |
645 | FALSE, /* partial_inplace */ | |
646 | 0xffffffff, /* src_mask */ | |
647 | 0xffffffff, /* dst_mask */ | |
648 | FALSE), /* pcrel_offset */ | |
649 | ||
650 | HOWTO (R_ARM_V4BX, /* type */ | |
651 | 0, /* rightshift */ | |
652 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
653 | 32, /* bitsize */ | |
654 | FALSE, /* pc_relative */ | |
655 | 0, /* bitpos */ | |
656 | complain_overflow_dont,/* complain_on_overflow */ | |
657 | bfd_elf_generic_reloc, /* special_function */ | |
658 | "R_ARM_V4BX", /* name */ | |
659 | FALSE, /* partial_inplace */ | |
660 | 0xffffffff, /* src_mask */ | |
661 | 0xffffffff, /* dst_mask */ | |
662 | FALSE), /* pcrel_offset */ | |
663 | ||
664 | HOWTO (R_ARM_TARGET2, /* type */ | |
665 | 0, /* rightshift */ | |
666 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
667 | 32, /* bitsize */ | |
668 | FALSE, /* pc_relative */ | |
669 | 0, /* bitpos */ | |
670 | complain_overflow_signed,/* complain_on_overflow */ | |
671 | bfd_elf_generic_reloc, /* special_function */ | |
672 | "R_ARM_TARGET2", /* name */ | |
673 | FALSE, /* partial_inplace */ | |
674 | 0xffffffff, /* src_mask */ | |
675 | 0xffffffff, /* dst_mask */ | |
676 | TRUE), /* pcrel_offset */ | |
677 | ||
678 | HOWTO (R_ARM_PREL31, /* type */ | |
679 | 0, /* rightshift */ | |
680 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
681 | 31, /* bitsize */ | |
682 | TRUE, /* pc_relative */ | |
683 | 0, /* bitpos */ | |
684 | complain_overflow_signed,/* complain_on_overflow */ | |
685 | bfd_elf_generic_reloc, /* special_function */ | |
686 | "R_ARM_PREL31", /* name */ | |
687 | FALSE, /* partial_inplace */ | |
688 | 0x7fffffff, /* src_mask */ | |
689 | 0x7fffffff, /* dst_mask */ | |
690 | TRUE), /* pcrel_offset */ | |
c19d1205 ZW |
691 | |
692 | HOWTO (R_ARM_MOVW_ABS_NC, /* type */ | |
693 | 0, /* rightshift */ | |
694 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
695 | 16, /* bitsize */ | |
696 | FALSE, /* pc_relative */ | |
697 | 0, /* bitpos */ | |
698 | complain_overflow_dont,/* complain_on_overflow */ | |
699 | bfd_elf_generic_reloc, /* special_function */ | |
700 | "R_ARM_MOVW_ABS_NC", /* name */ | |
701 | FALSE, /* partial_inplace */ | |
39623e12 PB |
702 | 0x000f0fff, /* src_mask */ |
703 | 0x000f0fff, /* dst_mask */ | |
c19d1205 ZW |
704 | FALSE), /* pcrel_offset */ |
705 | ||
706 | HOWTO (R_ARM_MOVT_ABS, /* type */ | |
707 | 0, /* rightshift */ | |
708 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
709 | 16, /* bitsize */ | |
710 | FALSE, /* pc_relative */ | |
711 | 0, /* bitpos */ | |
712 | complain_overflow_bitfield,/* complain_on_overflow */ | |
713 | bfd_elf_generic_reloc, /* special_function */ | |
714 | "R_ARM_MOVT_ABS", /* name */ | |
715 | FALSE, /* partial_inplace */ | |
39623e12 PB |
716 | 0x000f0fff, /* src_mask */ |
717 | 0x000f0fff, /* dst_mask */ | |
c19d1205 ZW |
718 | FALSE), /* pcrel_offset */ |
719 | ||
720 | HOWTO (R_ARM_MOVW_PREL_NC, /* type */ | |
721 | 0, /* rightshift */ | |
722 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
723 | 16, /* bitsize */ | |
724 | TRUE, /* pc_relative */ | |
725 | 0, /* bitpos */ | |
726 | complain_overflow_dont,/* complain_on_overflow */ | |
727 | bfd_elf_generic_reloc, /* special_function */ | |
728 | "R_ARM_MOVW_PREL_NC", /* name */ | |
729 | FALSE, /* partial_inplace */ | |
39623e12 PB |
730 | 0x000f0fff, /* src_mask */ |
731 | 0x000f0fff, /* dst_mask */ | |
c19d1205 ZW |
732 | TRUE), /* pcrel_offset */ |
733 | ||
734 | HOWTO (R_ARM_MOVT_PREL, /* type */ | |
735 | 0, /* rightshift */ | |
736 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
737 | 16, /* bitsize */ | |
738 | TRUE, /* pc_relative */ | |
739 | 0, /* bitpos */ | |
740 | complain_overflow_bitfield,/* complain_on_overflow */ | |
741 | bfd_elf_generic_reloc, /* special_function */ | |
742 | "R_ARM_MOVT_PREL", /* name */ | |
743 | FALSE, /* partial_inplace */ | |
39623e12 PB |
744 | 0x000f0fff, /* src_mask */ |
745 | 0x000f0fff, /* dst_mask */ | |
c19d1205 ZW |
746 | TRUE), /* pcrel_offset */ |
747 | ||
748 | HOWTO (R_ARM_THM_MOVW_ABS_NC, /* type */ | |
749 | 0, /* rightshift */ | |
750 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
751 | 16, /* bitsize */ | |
752 | FALSE, /* pc_relative */ | |
753 | 0, /* bitpos */ | |
754 | complain_overflow_dont,/* complain_on_overflow */ | |
755 | bfd_elf_generic_reloc, /* special_function */ | |
756 | "R_ARM_THM_MOVW_ABS_NC",/* name */ | |
757 | FALSE, /* partial_inplace */ | |
758 | 0x040f70ff, /* src_mask */ | |
759 | 0x040f70ff, /* dst_mask */ | |
760 | FALSE), /* pcrel_offset */ | |
761 | ||
762 | HOWTO (R_ARM_THM_MOVT_ABS, /* type */ | |
763 | 0, /* rightshift */ | |
764 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
765 | 16, /* bitsize */ | |
766 | FALSE, /* pc_relative */ | |
767 | 0, /* bitpos */ | |
768 | complain_overflow_bitfield,/* complain_on_overflow */ | |
769 | bfd_elf_generic_reloc, /* special_function */ | |
770 | "R_ARM_THM_MOVT_ABS", /* name */ | |
771 | FALSE, /* partial_inplace */ | |
772 | 0x040f70ff, /* src_mask */ | |
773 | 0x040f70ff, /* dst_mask */ | |
774 | FALSE), /* pcrel_offset */ | |
775 | ||
776 | HOWTO (R_ARM_THM_MOVW_PREL_NC,/* type */ | |
777 | 0, /* rightshift */ | |
778 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
779 | 16, /* bitsize */ | |
780 | TRUE, /* pc_relative */ | |
781 | 0, /* bitpos */ | |
782 | complain_overflow_dont,/* complain_on_overflow */ | |
783 | bfd_elf_generic_reloc, /* special_function */ | |
784 | "R_ARM_THM_MOVW_PREL_NC",/* name */ | |
785 | FALSE, /* partial_inplace */ | |
786 | 0x040f70ff, /* src_mask */ | |
787 | 0x040f70ff, /* dst_mask */ | |
788 | TRUE), /* pcrel_offset */ | |
789 | ||
790 | HOWTO (R_ARM_THM_MOVT_PREL, /* type */ | |
791 | 0, /* rightshift */ | |
792 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
793 | 16, /* bitsize */ | |
794 | TRUE, /* pc_relative */ | |
795 | 0, /* bitpos */ | |
796 | complain_overflow_bitfield,/* complain_on_overflow */ | |
797 | bfd_elf_generic_reloc, /* special_function */ | |
798 | "R_ARM_THM_MOVT_PREL", /* name */ | |
799 | FALSE, /* partial_inplace */ | |
800 | 0x040f70ff, /* src_mask */ | |
801 | 0x040f70ff, /* dst_mask */ | |
802 | TRUE), /* pcrel_offset */ | |
803 | ||
804 | HOWTO (R_ARM_THM_JUMP19, /* type */ | |
805 | 1, /* rightshift */ | |
806 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
807 | 19, /* bitsize */ | |
808 | TRUE, /* pc_relative */ | |
809 | 0, /* bitpos */ | |
810 | complain_overflow_signed,/* complain_on_overflow */ | |
811 | bfd_elf_generic_reloc, /* special_function */ | |
812 | "R_ARM_THM_JUMP19", /* name */ | |
813 | FALSE, /* partial_inplace */ | |
814 | 0x043f2fff, /* src_mask */ | |
815 | 0x043f2fff, /* dst_mask */ | |
816 | TRUE), /* pcrel_offset */ | |
817 | ||
818 | HOWTO (R_ARM_THM_JUMP6, /* type */ | |
819 | 1, /* rightshift */ | |
820 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
821 | 6, /* bitsize */ | |
822 | TRUE, /* pc_relative */ | |
823 | 0, /* bitpos */ | |
824 | complain_overflow_unsigned,/* complain_on_overflow */ | |
825 | bfd_elf_generic_reloc, /* special_function */ | |
826 | "R_ARM_THM_JUMP6", /* name */ | |
827 | FALSE, /* partial_inplace */ | |
828 | 0x02f8, /* src_mask */ | |
829 | 0x02f8, /* dst_mask */ | |
830 | TRUE), /* pcrel_offset */ | |
831 | ||
832 | /* These are declared as 13-bit signed relocations because we can | |
833 | address -4095 .. 4095(base) by altering ADDW to SUBW or vice | |
834 | versa. */ | |
835 | HOWTO (R_ARM_THM_ALU_PREL_11_0,/* type */ | |
836 | 0, /* rightshift */ | |
837 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
838 | 13, /* bitsize */ | |
839 | TRUE, /* pc_relative */ | |
840 | 0, /* bitpos */ | |
2cab6cc3 | 841 | complain_overflow_dont,/* complain_on_overflow */ |
c19d1205 ZW |
842 | bfd_elf_generic_reloc, /* special_function */ |
843 | "R_ARM_THM_ALU_PREL_11_0",/* name */ | |
844 | FALSE, /* partial_inplace */ | |
2cab6cc3 MS |
845 | 0xffffffff, /* src_mask */ |
846 | 0xffffffff, /* dst_mask */ | |
c19d1205 ZW |
847 | TRUE), /* pcrel_offset */ |
848 | ||
849 | HOWTO (R_ARM_THM_PC12, /* type */ | |
850 | 0, /* rightshift */ | |
851 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
852 | 13, /* bitsize */ | |
853 | TRUE, /* pc_relative */ | |
854 | 0, /* bitpos */ | |
2cab6cc3 | 855 | complain_overflow_dont,/* complain_on_overflow */ |
c19d1205 ZW |
856 | bfd_elf_generic_reloc, /* special_function */ |
857 | "R_ARM_THM_PC12", /* name */ | |
858 | FALSE, /* partial_inplace */ | |
2cab6cc3 MS |
859 | 0xffffffff, /* src_mask */ |
860 | 0xffffffff, /* dst_mask */ | |
c19d1205 ZW |
861 | TRUE), /* pcrel_offset */ |
862 | ||
863 | HOWTO (R_ARM_ABS32_NOI, /* type */ | |
864 | 0, /* rightshift */ | |
865 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
866 | 32, /* bitsize */ | |
867 | FALSE, /* pc_relative */ | |
868 | 0, /* bitpos */ | |
869 | complain_overflow_dont,/* complain_on_overflow */ | |
870 | bfd_elf_generic_reloc, /* special_function */ | |
871 | "R_ARM_ABS32_NOI", /* name */ | |
872 | FALSE, /* partial_inplace */ | |
873 | 0xffffffff, /* src_mask */ | |
874 | 0xffffffff, /* dst_mask */ | |
875 | FALSE), /* pcrel_offset */ | |
876 | ||
877 | HOWTO (R_ARM_REL32_NOI, /* type */ | |
878 | 0, /* rightshift */ | |
879 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
880 | 32, /* bitsize */ | |
881 | TRUE, /* pc_relative */ | |
882 | 0, /* bitpos */ | |
883 | complain_overflow_dont,/* complain_on_overflow */ | |
884 | bfd_elf_generic_reloc, /* special_function */ | |
885 | "R_ARM_REL32_NOI", /* name */ | |
886 | FALSE, /* partial_inplace */ | |
887 | 0xffffffff, /* src_mask */ | |
888 | 0xffffffff, /* dst_mask */ | |
889 | FALSE), /* pcrel_offset */ | |
7f266840 | 890 | |
4962c51a MS |
891 | /* Group relocations. */ |
892 | ||
893 | HOWTO (R_ARM_ALU_PC_G0_NC, /* type */ | |
894 | 0, /* rightshift */ | |
895 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
896 | 32, /* bitsize */ | |
897 | TRUE, /* pc_relative */ | |
898 | 0, /* bitpos */ | |
899 | complain_overflow_dont,/* complain_on_overflow */ | |
900 | bfd_elf_generic_reloc, /* special_function */ | |
901 | "R_ARM_ALU_PC_G0_NC", /* name */ | |
902 | FALSE, /* partial_inplace */ | |
903 | 0xffffffff, /* src_mask */ | |
904 | 0xffffffff, /* dst_mask */ | |
905 | TRUE), /* pcrel_offset */ | |
906 | ||
907 | HOWTO (R_ARM_ALU_PC_G0, /* type */ | |
908 | 0, /* rightshift */ | |
909 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
910 | 32, /* bitsize */ | |
911 | TRUE, /* pc_relative */ | |
912 | 0, /* bitpos */ | |
913 | complain_overflow_dont,/* complain_on_overflow */ | |
914 | bfd_elf_generic_reloc, /* special_function */ | |
915 | "R_ARM_ALU_PC_G0", /* name */ | |
916 | FALSE, /* partial_inplace */ | |
917 | 0xffffffff, /* src_mask */ | |
918 | 0xffffffff, /* dst_mask */ | |
919 | TRUE), /* pcrel_offset */ | |
920 | ||
921 | HOWTO (R_ARM_ALU_PC_G1_NC, /* type */ | |
922 | 0, /* rightshift */ | |
923 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
924 | 32, /* bitsize */ | |
925 | TRUE, /* pc_relative */ | |
926 | 0, /* bitpos */ | |
927 | complain_overflow_dont,/* complain_on_overflow */ | |
928 | bfd_elf_generic_reloc, /* special_function */ | |
929 | "R_ARM_ALU_PC_G1_NC", /* name */ | |
930 | FALSE, /* partial_inplace */ | |
931 | 0xffffffff, /* src_mask */ | |
932 | 0xffffffff, /* dst_mask */ | |
933 | TRUE), /* pcrel_offset */ | |
934 | ||
935 | HOWTO (R_ARM_ALU_PC_G1, /* type */ | |
936 | 0, /* rightshift */ | |
937 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
938 | 32, /* bitsize */ | |
939 | TRUE, /* pc_relative */ | |
940 | 0, /* bitpos */ | |
941 | complain_overflow_dont,/* complain_on_overflow */ | |
942 | bfd_elf_generic_reloc, /* special_function */ | |
943 | "R_ARM_ALU_PC_G1", /* name */ | |
944 | FALSE, /* partial_inplace */ | |
945 | 0xffffffff, /* src_mask */ | |
946 | 0xffffffff, /* dst_mask */ | |
947 | TRUE), /* pcrel_offset */ | |
948 | ||
949 | HOWTO (R_ARM_ALU_PC_G2, /* type */ | |
950 | 0, /* rightshift */ | |
951 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
952 | 32, /* bitsize */ | |
953 | TRUE, /* pc_relative */ | |
954 | 0, /* bitpos */ | |
955 | complain_overflow_dont,/* complain_on_overflow */ | |
956 | bfd_elf_generic_reloc, /* special_function */ | |
957 | "R_ARM_ALU_PC_G2", /* name */ | |
958 | FALSE, /* partial_inplace */ | |
959 | 0xffffffff, /* src_mask */ | |
960 | 0xffffffff, /* dst_mask */ | |
961 | TRUE), /* pcrel_offset */ | |
962 | ||
963 | HOWTO (R_ARM_LDR_PC_G1, /* type */ | |
964 | 0, /* rightshift */ | |
965 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
966 | 32, /* bitsize */ | |
967 | TRUE, /* pc_relative */ | |
968 | 0, /* bitpos */ | |
969 | complain_overflow_dont,/* complain_on_overflow */ | |
970 | bfd_elf_generic_reloc, /* special_function */ | |
971 | "R_ARM_LDR_PC_G1", /* name */ | |
972 | FALSE, /* partial_inplace */ | |
973 | 0xffffffff, /* src_mask */ | |
974 | 0xffffffff, /* dst_mask */ | |
975 | TRUE), /* pcrel_offset */ | |
976 | ||
977 | HOWTO (R_ARM_LDR_PC_G2, /* type */ | |
978 | 0, /* rightshift */ | |
979 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
980 | 32, /* bitsize */ | |
981 | TRUE, /* pc_relative */ | |
982 | 0, /* bitpos */ | |
983 | complain_overflow_dont,/* complain_on_overflow */ | |
984 | bfd_elf_generic_reloc, /* special_function */ | |
985 | "R_ARM_LDR_PC_G2", /* name */ | |
986 | FALSE, /* partial_inplace */ | |
987 | 0xffffffff, /* src_mask */ | |
988 | 0xffffffff, /* dst_mask */ | |
989 | TRUE), /* pcrel_offset */ | |
990 | ||
991 | HOWTO (R_ARM_LDRS_PC_G0, /* type */ | |
992 | 0, /* rightshift */ | |
993 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
994 | 32, /* bitsize */ | |
995 | TRUE, /* pc_relative */ | |
996 | 0, /* bitpos */ | |
997 | complain_overflow_dont,/* complain_on_overflow */ | |
998 | bfd_elf_generic_reloc, /* special_function */ | |
999 | "R_ARM_LDRS_PC_G0", /* name */ | |
1000 | FALSE, /* partial_inplace */ | |
1001 | 0xffffffff, /* src_mask */ | |
1002 | 0xffffffff, /* dst_mask */ | |
1003 | TRUE), /* pcrel_offset */ | |
1004 | ||
1005 | HOWTO (R_ARM_LDRS_PC_G1, /* type */ | |
1006 | 0, /* rightshift */ | |
1007 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1008 | 32, /* bitsize */ | |
1009 | TRUE, /* pc_relative */ | |
1010 | 0, /* bitpos */ | |
1011 | complain_overflow_dont,/* complain_on_overflow */ | |
1012 | bfd_elf_generic_reloc, /* special_function */ | |
1013 | "R_ARM_LDRS_PC_G1", /* name */ | |
1014 | FALSE, /* partial_inplace */ | |
1015 | 0xffffffff, /* src_mask */ | |
1016 | 0xffffffff, /* dst_mask */ | |
1017 | TRUE), /* pcrel_offset */ | |
1018 | ||
1019 | HOWTO (R_ARM_LDRS_PC_G2, /* type */ | |
1020 | 0, /* rightshift */ | |
1021 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1022 | 32, /* bitsize */ | |
1023 | TRUE, /* pc_relative */ | |
1024 | 0, /* bitpos */ | |
1025 | complain_overflow_dont,/* complain_on_overflow */ | |
1026 | bfd_elf_generic_reloc, /* special_function */ | |
1027 | "R_ARM_LDRS_PC_G2", /* name */ | |
1028 | FALSE, /* partial_inplace */ | |
1029 | 0xffffffff, /* src_mask */ | |
1030 | 0xffffffff, /* dst_mask */ | |
1031 | TRUE), /* pcrel_offset */ | |
1032 | ||
1033 | HOWTO (R_ARM_LDC_PC_G0, /* type */ | |
1034 | 0, /* rightshift */ | |
1035 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1036 | 32, /* bitsize */ | |
1037 | TRUE, /* pc_relative */ | |
1038 | 0, /* bitpos */ | |
1039 | complain_overflow_dont,/* complain_on_overflow */ | |
1040 | bfd_elf_generic_reloc, /* special_function */ | |
1041 | "R_ARM_LDC_PC_G0", /* name */ | |
1042 | FALSE, /* partial_inplace */ | |
1043 | 0xffffffff, /* src_mask */ | |
1044 | 0xffffffff, /* dst_mask */ | |
1045 | TRUE), /* pcrel_offset */ | |
1046 | ||
1047 | HOWTO (R_ARM_LDC_PC_G1, /* type */ | |
1048 | 0, /* rightshift */ | |
1049 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1050 | 32, /* bitsize */ | |
1051 | TRUE, /* pc_relative */ | |
1052 | 0, /* bitpos */ | |
1053 | complain_overflow_dont,/* complain_on_overflow */ | |
1054 | bfd_elf_generic_reloc, /* special_function */ | |
1055 | "R_ARM_LDC_PC_G1", /* name */ | |
1056 | FALSE, /* partial_inplace */ | |
1057 | 0xffffffff, /* src_mask */ | |
1058 | 0xffffffff, /* dst_mask */ | |
1059 | TRUE), /* pcrel_offset */ | |
1060 | ||
1061 | HOWTO (R_ARM_LDC_PC_G2, /* type */ | |
1062 | 0, /* rightshift */ | |
1063 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1064 | 32, /* bitsize */ | |
1065 | TRUE, /* pc_relative */ | |
1066 | 0, /* bitpos */ | |
1067 | complain_overflow_dont,/* complain_on_overflow */ | |
1068 | bfd_elf_generic_reloc, /* special_function */ | |
1069 | "R_ARM_LDC_PC_G2", /* name */ | |
1070 | FALSE, /* partial_inplace */ | |
1071 | 0xffffffff, /* src_mask */ | |
1072 | 0xffffffff, /* dst_mask */ | |
1073 | TRUE), /* pcrel_offset */ | |
1074 | ||
1075 | HOWTO (R_ARM_ALU_SB_G0_NC, /* type */ | |
1076 | 0, /* rightshift */ | |
1077 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1078 | 32, /* bitsize */ | |
1079 | TRUE, /* pc_relative */ | |
1080 | 0, /* bitpos */ | |
1081 | complain_overflow_dont,/* complain_on_overflow */ | |
1082 | bfd_elf_generic_reloc, /* special_function */ | |
1083 | "R_ARM_ALU_SB_G0_NC", /* name */ | |
1084 | FALSE, /* partial_inplace */ | |
1085 | 0xffffffff, /* src_mask */ | |
1086 | 0xffffffff, /* dst_mask */ | |
1087 | TRUE), /* pcrel_offset */ | |
1088 | ||
1089 | HOWTO (R_ARM_ALU_SB_G0, /* type */ | |
1090 | 0, /* rightshift */ | |
1091 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1092 | 32, /* bitsize */ | |
1093 | TRUE, /* pc_relative */ | |
1094 | 0, /* bitpos */ | |
1095 | complain_overflow_dont,/* complain_on_overflow */ | |
1096 | bfd_elf_generic_reloc, /* special_function */ | |
1097 | "R_ARM_ALU_SB_G0", /* name */ | |
1098 | FALSE, /* partial_inplace */ | |
1099 | 0xffffffff, /* src_mask */ | |
1100 | 0xffffffff, /* dst_mask */ | |
1101 | TRUE), /* pcrel_offset */ | |
1102 | ||
1103 | HOWTO (R_ARM_ALU_SB_G1_NC, /* type */ | |
1104 | 0, /* rightshift */ | |
1105 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1106 | 32, /* bitsize */ | |
1107 | TRUE, /* pc_relative */ | |
1108 | 0, /* bitpos */ | |
1109 | complain_overflow_dont,/* complain_on_overflow */ | |
1110 | bfd_elf_generic_reloc, /* special_function */ | |
1111 | "R_ARM_ALU_SB_G1_NC", /* name */ | |
1112 | FALSE, /* partial_inplace */ | |
1113 | 0xffffffff, /* src_mask */ | |
1114 | 0xffffffff, /* dst_mask */ | |
1115 | TRUE), /* pcrel_offset */ | |
1116 | ||
1117 | HOWTO (R_ARM_ALU_SB_G1, /* type */ | |
1118 | 0, /* rightshift */ | |
1119 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1120 | 32, /* bitsize */ | |
1121 | TRUE, /* pc_relative */ | |
1122 | 0, /* bitpos */ | |
1123 | complain_overflow_dont,/* complain_on_overflow */ | |
1124 | bfd_elf_generic_reloc, /* special_function */ | |
1125 | "R_ARM_ALU_SB_G1", /* name */ | |
1126 | FALSE, /* partial_inplace */ | |
1127 | 0xffffffff, /* src_mask */ | |
1128 | 0xffffffff, /* dst_mask */ | |
1129 | TRUE), /* pcrel_offset */ | |
1130 | ||
1131 | HOWTO (R_ARM_ALU_SB_G2, /* type */ | |
1132 | 0, /* rightshift */ | |
1133 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1134 | 32, /* bitsize */ | |
1135 | TRUE, /* pc_relative */ | |
1136 | 0, /* bitpos */ | |
1137 | complain_overflow_dont,/* complain_on_overflow */ | |
1138 | bfd_elf_generic_reloc, /* special_function */ | |
1139 | "R_ARM_ALU_SB_G2", /* name */ | |
1140 | FALSE, /* partial_inplace */ | |
1141 | 0xffffffff, /* src_mask */ | |
1142 | 0xffffffff, /* dst_mask */ | |
1143 | TRUE), /* pcrel_offset */ | |
1144 | ||
1145 | HOWTO (R_ARM_LDR_SB_G0, /* type */ | |
1146 | 0, /* rightshift */ | |
1147 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1148 | 32, /* bitsize */ | |
1149 | TRUE, /* pc_relative */ | |
1150 | 0, /* bitpos */ | |
1151 | complain_overflow_dont,/* complain_on_overflow */ | |
1152 | bfd_elf_generic_reloc, /* special_function */ | |
1153 | "R_ARM_LDR_SB_G0", /* name */ | |
1154 | FALSE, /* partial_inplace */ | |
1155 | 0xffffffff, /* src_mask */ | |
1156 | 0xffffffff, /* dst_mask */ | |
1157 | TRUE), /* pcrel_offset */ | |
1158 | ||
1159 | HOWTO (R_ARM_LDR_SB_G1, /* type */ | |
1160 | 0, /* rightshift */ | |
1161 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1162 | 32, /* bitsize */ | |
1163 | TRUE, /* pc_relative */ | |
1164 | 0, /* bitpos */ | |
1165 | complain_overflow_dont,/* complain_on_overflow */ | |
1166 | bfd_elf_generic_reloc, /* special_function */ | |
1167 | "R_ARM_LDR_SB_G1", /* name */ | |
1168 | FALSE, /* partial_inplace */ | |
1169 | 0xffffffff, /* src_mask */ | |
1170 | 0xffffffff, /* dst_mask */ | |
1171 | TRUE), /* pcrel_offset */ | |
1172 | ||
1173 | HOWTO (R_ARM_LDR_SB_G2, /* type */ | |
1174 | 0, /* rightshift */ | |
1175 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1176 | 32, /* bitsize */ | |
1177 | TRUE, /* pc_relative */ | |
1178 | 0, /* bitpos */ | |
1179 | complain_overflow_dont,/* complain_on_overflow */ | |
1180 | bfd_elf_generic_reloc, /* special_function */ | |
1181 | "R_ARM_LDR_SB_G2", /* name */ | |
1182 | FALSE, /* partial_inplace */ | |
1183 | 0xffffffff, /* src_mask */ | |
1184 | 0xffffffff, /* dst_mask */ | |
1185 | TRUE), /* pcrel_offset */ | |
1186 | ||
1187 | HOWTO (R_ARM_LDRS_SB_G0, /* type */ | |
1188 | 0, /* rightshift */ | |
1189 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1190 | 32, /* bitsize */ | |
1191 | TRUE, /* pc_relative */ | |
1192 | 0, /* bitpos */ | |
1193 | complain_overflow_dont,/* complain_on_overflow */ | |
1194 | bfd_elf_generic_reloc, /* special_function */ | |
1195 | "R_ARM_LDRS_SB_G0", /* name */ | |
1196 | FALSE, /* partial_inplace */ | |
1197 | 0xffffffff, /* src_mask */ | |
1198 | 0xffffffff, /* dst_mask */ | |
1199 | TRUE), /* pcrel_offset */ | |
1200 | ||
1201 | HOWTO (R_ARM_LDRS_SB_G1, /* type */ | |
1202 | 0, /* rightshift */ | |
1203 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1204 | 32, /* bitsize */ | |
1205 | TRUE, /* pc_relative */ | |
1206 | 0, /* bitpos */ | |
1207 | complain_overflow_dont,/* complain_on_overflow */ | |
1208 | bfd_elf_generic_reloc, /* special_function */ | |
1209 | "R_ARM_LDRS_SB_G1", /* name */ | |
1210 | FALSE, /* partial_inplace */ | |
1211 | 0xffffffff, /* src_mask */ | |
1212 | 0xffffffff, /* dst_mask */ | |
1213 | TRUE), /* pcrel_offset */ | |
1214 | ||
1215 | HOWTO (R_ARM_LDRS_SB_G2, /* type */ | |
1216 | 0, /* rightshift */ | |
1217 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1218 | 32, /* bitsize */ | |
1219 | TRUE, /* pc_relative */ | |
1220 | 0, /* bitpos */ | |
1221 | complain_overflow_dont,/* complain_on_overflow */ | |
1222 | bfd_elf_generic_reloc, /* special_function */ | |
1223 | "R_ARM_LDRS_SB_G2", /* name */ | |
1224 | FALSE, /* partial_inplace */ | |
1225 | 0xffffffff, /* src_mask */ | |
1226 | 0xffffffff, /* dst_mask */ | |
1227 | TRUE), /* pcrel_offset */ | |
1228 | ||
1229 | HOWTO (R_ARM_LDC_SB_G0, /* type */ | |
1230 | 0, /* rightshift */ | |
1231 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1232 | 32, /* bitsize */ | |
1233 | TRUE, /* pc_relative */ | |
1234 | 0, /* bitpos */ | |
1235 | complain_overflow_dont,/* complain_on_overflow */ | |
1236 | bfd_elf_generic_reloc, /* special_function */ | |
1237 | "R_ARM_LDC_SB_G0", /* name */ | |
1238 | FALSE, /* partial_inplace */ | |
1239 | 0xffffffff, /* src_mask */ | |
1240 | 0xffffffff, /* dst_mask */ | |
1241 | TRUE), /* pcrel_offset */ | |
1242 | ||
1243 | HOWTO (R_ARM_LDC_SB_G1, /* type */ | |
1244 | 0, /* rightshift */ | |
1245 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1246 | 32, /* bitsize */ | |
1247 | TRUE, /* pc_relative */ | |
1248 | 0, /* bitpos */ | |
1249 | complain_overflow_dont,/* complain_on_overflow */ | |
1250 | bfd_elf_generic_reloc, /* special_function */ | |
1251 | "R_ARM_LDC_SB_G1", /* name */ | |
1252 | FALSE, /* partial_inplace */ | |
1253 | 0xffffffff, /* src_mask */ | |
1254 | 0xffffffff, /* dst_mask */ | |
1255 | TRUE), /* pcrel_offset */ | |
1256 | ||
1257 | HOWTO (R_ARM_LDC_SB_G2, /* type */ | |
1258 | 0, /* rightshift */ | |
1259 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1260 | 32, /* bitsize */ | |
1261 | TRUE, /* pc_relative */ | |
1262 | 0, /* bitpos */ | |
1263 | complain_overflow_dont,/* complain_on_overflow */ | |
1264 | bfd_elf_generic_reloc, /* special_function */ | |
1265 | "R_ARM_LDC_SB_G2", /* name */ | |
1266 | FALSE, /* partial_inplace */ | |
1267 | 0xffffffff, /* src_mask */ | |
1268 | 0xffffffff, /* dst_mask */ | |
1269 | TRUE), /* pcrel_offset */ | |
1270 | ||
1271 | /* End of group relocations. */ | |
c19d1205 | 1272 | |
c19d1205 ZW |
1273 | HOWTO (R_ARM_MOVW_BREL_NC, /* type */ |
1274 | 0, /* rightshift */ | |
1275 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1276 | 16, /* bitsize */ | |
1277 | FALSE, /* pc_relative */ | |
1278 | 0, /* bitpos */ | |
1279 | complain_overflow_dont,/* complain_on_overflow */ | |
1280 | bfd_elf_generic_reloc, /* special_function */ | |
1281 | "R_ARM_MOVW_BREL_NC", /* name */ | |
1282 | FALSE, /* partial_inplace */ | |
1283 | 0x0000ffff, /* src_mask */ | |
1284 | 0x0000ffff, /* dst_mask */ | |
1285 | FALSE), /* pcrel_offset */ | |
1286 | ||
1287 | HOWTO (R_ARM_MOVT_BREL, /* type */ | |
1288 | 0, /* rightshift */ | |
1289 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1290 | 16, /* bitsize */ | |
1291 | FALSE, /* pc_relative */ | |
1292 | 0, /* bitpos */ | |
1293 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1294 | bfd_elf_generic_reloc, /* special_function */ | |
1295 | "R_ARM_MOVT_BREL", /* name */ | |
1296 | FALSE, /* partial_inplace */ | |
1297 | 0x0000ffff, /* src_mask */ | |
1298 | 0x0000ffff, /* dst_mask */ | |
1299 | FALSE), /* pcrel_offset */ | |
1300 | ||
1301 | HOWTO (R_ARM_MOVW_BREL, /* type */ | |
1302 | 0, /* rightshift */ | |
1303 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1304 | 16, /* bitsize */ | |
1305 | FALSE, /* pc_relative */ | |
1306 | 0, /* bitpos */ | |
1307 | complain_overflow_dont,/* complain_on_overflow */ | |
1308 | bfd_elf_generic_reloc, /* special_function */ | |
1309 | "R_ARM_MOVW_BREL", /* name */ | |
1310 | FALSE, /* partial_inplace */ | |
1311 | 0x0000ffff, /* src_mask */ | |
1312 | 0x0000ffff, /* dst_mask */ | |
1313 | FALSE), /* pcrel_offset */ | |
1314 | ||
1315 | HOWTO (R_ARM_THM_MOVW_BREL_NC,/* type */ | |
1316 | 0, /* rightshift */ | |
1317 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1318 | 16, /* bitsize */ | |
1319 | FALSE, /* pc_relative */ | |
1320 | 0, /* bitpos */ | |
1321 | complain_overflow_dont,/* complain_on_overflow */ | |
1322 | bfd_elf_generic_reloc, /* special_function */ | |
1323 | "R_ARM_THM_MOVW_BREL_NC",/* name */ | |
1324 | FALSE, /* partial_inplace */ | |
1325 | 0x040f70ff, /* src_mask */ | |
1326 | 0x040f70ff, /* dst_mask */ | |
1327 | FALSE), /* pcrel_offset */ | |
1328 | ||
1329 | HOWTO (R_ARM_THM_MOVT_BREL, /* type */ | |
1330 | 0, /* rightshift */ | |
1331 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1332 | 16, /* bitsize */ | |
1333 | FALSE, /* pc_relative */ | |
1334 | 0, /* bitpos */ | |
1335 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1336 | bfd_elf_generic_reloc, /* special_function */ | |
1337 | "R_ARM_THM_MOVT_BREL", /* name */ | |
1338 | FALSE, /* partial_inplace */ | |
1339 | 0x040f70ff, /* src_mask */ | |
1340 | 0x040f70ff, /* dst_mask */ | |
1341 | FALSE), /* pcrel_offset */ | |
1342 | ||
1343 | HOWTO (R_ARM_THM_MOVW_BREL, /* type */ | |
1344 | 0, /* rightshift */ | |
1345 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1346 | 16, /* bitsize */ | |
1347 | FALSE, /* pc_relative */ | |
1348 | 0, /* bitpos */ | |
1349 | complain_overflow_dont,/* complain_on_overflow */ | |
1350 | bfd_elf_generic_reloc, /* special_function */ | |
1351 | "R_ARM_THM_MOVW_BREL", /* name */ | |
1352 | FALSE, /* partial_inplace */ | |
1353 | 0x040f70ff, /* src_mask */ | |
1354 | 0x040f70ff, /* dst_mask */ | |
1355 | FALSE), /* pcrel_offset */ | |
1356 | ||
8029a119 | 1357 | EMPTY_HOWTO (90), /* Unallocated. */ |
c19d1205 ZW |
1358 | EMPTY_HOWTO (91), |
1359 | EMPTY_HOWTO (92), | |
1360 | EMPTY_HOWTO (93), | |
1361 | ||
1362 | HOWTO (R_ARM_PLT32_ABS, /* type */ | |
1363 | 0, /* rightshift */ | |
1364 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1365 | 32, /* bitsize */ | |
1366 | FALSE, /* pc_relative */ | |
1367 | 0, /* bitpos */ | |
1368 | complain_overflow_dont,/* complain_on_overflow */ | |
1369 | bfd_elf_generic_reloc, /* special_function */ | |
1370 | "R_ARM_PLT32_ABS", /* name */ | |
1371 | FALSE, /* partial_inplace */ | |
1372 | 0xffffffff, /* src_mask */ | |
1373 | 0xffffffff, /* dst_mask */ | |
1374 | FALSE), /* pcrel_offset */ | |
1375 | ||
1376 | HOWTO (R_ARM_GOT_ABS, /* type */ | |
1377 | 0, /* rightshift */ | |
1378 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1379 | 32, /* bitsize */ | |
1380 | FALSE, /* pc_relative */ | |
1381 | 0, /* bitpos */ | |
1382 | complain_overflow_dont,/* complain_on_overflow */ | |
1383 | bfd_elf_generic_reloc, /* special_function */ | |
1384 | "R_ARM_GOT_ABS", /* name */ | |
1385 | FALSE, /* partial_inplace */ | |
1386 | 0xffffffff, /* src_mask */ | |
1387 | 0xffffffff, /* dst_mask */ | |
1388 | FALSE), /* pcrel_offset */ | |
1389 | ||
1390 | HOWTO (R_ARM_GOT_PREL, /* type */ | |
1391 | 0, /* rightshift */ | |
1392 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1393 | 32, /* bitsize */ | |
1394 | TRUE, /* pc_relative */ | |
1395 | 0, /* bitpos */ | |
1396 | complain_overflow_dont, /* complain_on_overflow */ | |
1397 | bfd_elf_generic_reloc, /* special_function */ | |
1398 | "R_ARM_GOT_PREL", /* name */ | |
1399 | FALSE, /* partial_inplace */ | |
1400 | 0xffffffff, /* src_mask */ | |
1401 | 0xffffffff, /* dst_mask */ | |
1402 | TRUE), /* pcrel_offset */ | |
1403 | ||
1404 | HOWTO (R_ARM_GOT_BREL12, /* type */ | |
1405 | 0, /* rightshift */ | |
1406 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1407 | 12, /* bitsize */ | |
1408 | FALSE, /* pc_relative */ | |
1409 | 0, /* bitpos */ | |
1410 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1411 | bfd_elf_generic_reloc, /* special_function */ | |
1412 | "R_ARM_GOT_BREL12", /* name */ | |
1413 | FALSE, /* partial_inplace */ | |
1414 | 0x00000fff, /* src_mask */ | |
1415 | 0x00000fff, /* dst_mask */ | |
1416 | FALSE), /* pcrel_offset */ | |
1417 | ||
1418 | HOWTO (R_ARM_GOTOFF12, /* type */ | |
1419 | 0, /* rightshift */ | |
1420 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1421 | 12, /* bitsize */ | |
1422 | FALSE, /* pc_relative */ | |
1423 | 0, /* bitpos */ | |
1424 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1425 | bfd_elf_generic_reloc, /* special_function */ | |
1426 | "R_ARM_GOTOFF12", /* name */ | |
1427 | FALSE, /* partial_inplace */ | |
1428 | 0x00000fff, /* src_mask */ | |
1429 | 0x00000fff, /* dst_mask */ | |
1430 | FALSE), /* pcrel_offset */ | |
1431 | ||
1432 | EMPTY_HOWTO (R_ARM_GOTRELAX), /* reserved for future GOT-load optimizations */ | |
1433 | ||
1434 | /* GNU extension to record C++ vtable member usage */ | |
1435 | HOWTO (R_ARM_GNU_VTENTRY, /* type */ | |
ba93b8ac DJ |
1436 | 0, /* rightshift */ |
1437 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c19d1205 | 1438 | 0, /* bitsize */ |
ba93b8ac DJ |
1439 | FALSE, /* pc_relative */ |
1440 | 0, /* bitpos */ | |
c19d1205 ZW |
1441 | complain_overflow_dont, /* complain_on_overflow */ |
1442 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
1443 | "R_ARM_GNU_VTENTRY", /* name */ | |
1444 | FALSE, /* partial_inplace */ | |
1445 | 0, /* src_mask */ | |
1446 | 0, /* dst_mask */ | |
1447 | FALSE), /* pcrel_offset */ | |
1448 | ||
1449 | /* GNU extension to record C++ vtable hierarchy */ | |
1450 | HOWTO (R_ARM_GNU_VTINHERIT, /* type */ | |
1451 | 0, /* rightshift */ | |
1452 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1453 | 0, /* bitsize */ | |
1454 | FALSE, /* pc_relative */ | |
1455 | 0, /* bitpos */ | |
1456 | complain_overflow_dont, /* complain_on_overflow */ | |
1457 | NULL, /* special_function */ | |
1458 | "R_ARM_GNU_VTINHERIT", /* name */ | |
1459 | FALSE, /* partial_inplace */ | |
1460 | 0, /* src_mask */ | |
1461 | 0, /* dst_mask */ | |
1462 | FALSE), /* pcrel_offset */ | |
1463 | ||
1464 | HOWTO (R_ARM_THM_JUMP11, /* type */ | |
1465 | 1, /* rightshift */ | |
1466 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1467 | 11, /* bitsize */ | |
1468 | TRUE, /* pc_relative */ | |
1469 | 0, /* bitpos */ | |
1470 | complain_overflow_signed, /* complain_on_overflow */ | |
1471 | bfd_elf_generic_reloc, /* special_function */ | |
1472 | "R_ARM_THM_JUMP11", /* name */ | |
1473 | FALSE, /* partial_inplace */ | |
1474 | 0x000007ff, /* src_mask */ | |
1475 | 0x000007ff, /* dst_mask */ | |
1476 | TRUE), /* pcrel_offset */ | |
1477 | ||
1478 | HOWTO (R_ARM_THM_JUMP8, /* type */ | |
1479 | 1, /* rightshift */ | |
1480 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1481 | 8, /* bitsize */ | |
1482 | TRUE, /* pc_relative */ | |
1483 | 0, /* bitpos */ | |
1484 | complain_overflow_signed, /* complain_on_overflow */ | |
1485 | bfd_elf_generic_reloc, /* special_function */ | |
1486 | "R_ARM_THM_JUMP8", /* name */ | |
1487 | FALSE, /* partial_inplace */ | |
1488 | 0x000000ff, /* src_mask */ | |
1489 | 0x000000ff, /* dst_mask */ | |
1490 | TRUE), /* pcrel_offset */ | |
ba93b8ac | 1491 | |
c19d1205 ZW |
1492 | /* TLS relocations */ |
1493 | HOWTO (R_ARM_TLS_GD32, /* type */ | |
ba93b8ac DJ |
1494 | 0, /* rightshift */ |
1495 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1496 | 32, /* bitsize */ | |
1497 | FALSE, /* pc_relative */ | |
1498 | 0, /* bitpos */ | |
1499 | complain_overflow_bitfield,/* complain_on_overflow */ | |
c19d1205 ZW |
1500 | NULL, /* special_function */ |
1501 | "R_ARM_TLS_GD32", /* name */ | |
ba93b8ac DJ |
1502 | TRUE, /* partial_inplace */ |
1503 | 0xffffffff, /* src_mask */ | |
1504 | 0xffffffff, /* dst_mask */ | |
c19d1205 | 1505 | FALSE), /* pcrel_offset */ |
ba93b8ac | 1506 | |
ba93b8ac DJ |
1507 | HOWTO (R_ARM_TLS_LDM32, /* type */ |
1508 | 0, /* rightshift */ | |
1509 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1510 | 32, /* bitsize */ | |
1511 | FALSE, /* pc_relative */ | |
1512 | 0, /* bitpos */ | |
1513 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1514 | bfd_elf_generic_reloc, /* special_function */ | |
1515 | "R_ARM_TLS_LDM32", /* name */ | |
1516 | TRUE, /* partial_inplace */ | |
1517 | 0xffffffff, /* src_mask */ | |
1518 | 0xffffffff, /* dst_mask */ | |
c19d1205 | 1519 | FALSE), /* pcrel_offset */ |
ba93b8ac | 1520 | |
c19d1205 | 1521 | HOWTO (R_ARM_TLS_LDO32, /* type */ |
ba93b8ac DJ |
1522 | 0, /* rightshift */ |
1523 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1524 | 32, /* bitsize */ | |
1525 | FALSE, /* pc_relative */ | |
1526 | 0, /* bitpos */ | |
1527 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1528 | bfd_elf_generic_reloc, /* special_function */ | |
c19d1205 | 1529 | "R_ARM_TLS_LDO32", /* name */ |
ba93b8ac DJ |
1530 | TRUE, /* partial_inplace */ |
1531 | 0xffffffff, /* src_mask */ | |
1532 | 0xffffffff, /* dst_mask */ | |
c19d1205 | 1533 | FALSE), /* pcrel_offset */ |
ba93b8ac | 1534 | |
ba93b8ac DJ |
1535 | HOWTO (R_ARM_TLS_IE32, /* type */ |
1536 | 0, /* rightshift */ | |
1537 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1538 | 32, /* bitsize */ | |
1539 | FALSE, /* pc_relative */ | |
1540 | 0, /* bitpos */ | |
1541 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1542 | NULL, /* special_function */ | |
1543 | "R_ARM_TLS_IE32", /* name */ | |
1544 | TRUE, /* partial_inplace */ | |
1545 | 0xffffffff, /* src_mask */ | |
1546 | 0xffffffff, /* dst_mask */ | |
c19d1205 | 1547 | FALSE), /* pcrel_offset */ |
7f266840 | 1548 | |
c19d1205 | 1549 | HOWTO (R_ARM_TLS_LE32, /* type */ |
7f266840 DJ |
1550 | 0, /* rightshift */ |
1551 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c19d1205 | 1552 | 32, /* bitsize */ |
7f266840 DJ |
1553 | FALSE, /* pc_relative */ |
1554 | 0, /* bitpos */ | |
c19d1205 ZW |
1555 | complain_overflow_bitfield,/* complain_on_overflow */ |
1556 | bfd_elf_generic_reloc, /* special_function */ | |
1557 | "R_ARM_TLS_LE32", /* name */ | |
1558 | TRUE, /* partial_inplace */ | |
1559 | 0xffffffff, /* src_mask */ | |
1560 | 0xffffffff, /* dst_mask */ | |
1561 | FALSE), /* pcrel_offset */ | |
7f266840 | 1562 | |
c19d1205 ZW |
1563 | HOWTO (R_ARM_TLS_LDO12, /* type */ |
1564 | 0, /* rightshift */ | |
1565 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1566 | 12, /* bitsize */ | |
1567 | FALSE, /* pc_relative */ | |
7f266840 | 1568 | 0, /* bitpos */ |
c19d1205 | 1569 | complain_overflow_bitfield,/* complain_on_overflow */ |
7f266840 | 1570 | bfd_elf_generic_reloc, /* special_function */ |
c19d1205 | 1571 | "R_ARM_TLS_LDO12", /* name */ |
7f266840 | 1572 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
1573 | 0x00000fff, /* src_mask */ |
1574 | 0x00000fff, /* dst_mask */ | |
1575 | FALSE), /* pcrel_offset */ | |
7f266840 | 1576 | |
c19d1205 ZW |
1577 | HOWTO (R_ARM_TLS_LE12, /* type */ |
1578 | 0, /* rightshift */ | |
1579 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1580 | 12, /* bitsize */ | |
1581 | FALSE, /* pc_relative */ | |
7f266840 | 1582 | 0, /* bitpos */ |
c19d1205 | 1583 | complain_overflow_bitfield,/* complain_on_overflow */ |
7f266840 | 1584 | bfd_elf_generic_reloc, /* special_function */ |
c19d1205 | 1585 | "R_ARM_TLS_LE12", /* name */ |
7f266840 | 1586 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
1587 | 0x00000fff, /* src_mask */ |
1588 | 0x00000fff, /* dst_mask */ | |
1589 | FALSE), /* pcrel_offset */ | |
7f266840 | 1590 | |
c19d1205 | 1591 | HOWTO (R_ARM_TLS_IE12GP, /* type */ |
7f266840 DJ |
1592 | 0, /* rightshift */ |
1593 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c19d1205 ZW |
1594 | 12, /* bitsize */ |
1595 | FALSE, /* pc_relative */ | |
7f266840 | 1596 | 0, /* bitpos */ |
c19d1205 | 1597 | complain_overflow_bitfield,/* complain_on_overflow */ |
7f266840 | 1598 | bfd_elf_generic_reloc, /* special_function */ |
c19d1205 | 1599 | "R_ARM_TLS_IE12GP", /* name */ |
7f266840 | 1600 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
1601 | 0x00000fff, /* src_mask */ |
1602 | 0x00000fff, /* dst_mask */ | |
1603 | FALSE), /* pcrel_offset */ | |
1604 | }; | |
1605 | ||
1606 | /* 112-127 private relocations | |
1607 | 128 R_ARM_ME_TOO, obsolete | |
1608 | 129-255 unallocated in AAELF. | |
7f266840 | 1609 | |
c19d1205 ZW |
1610 | 249-255 extended, currently unused, relocations: */ |
1611 | ||
4962c51a | 1612 | static reloc_howto_type elf32_arm_howto_table_2[4] = |
7f266840 DJ |
1613 | { |
1614 | HOWTO (R_ARM_RREL32, /* type */ | |
1615 | 0, /* rightshift */ | |
1616 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1617 | 0, /* bitsize */ | |
1618 | FALSE, /* pc_relative */ | |
1619 | 0, /* bitpos */ | |
1620 | complain_overflow_dont,/* complain_on_overflow */ | |
1621 | bfd_elf_generic_reloc, /* special_function */ | |
1622 | "R_ARM_RREL32", /* name */ | |
1623 | FALSE, /* partial_inplace */ | |
1624 | 0, /* src_mask */ | |
1625 | 0, /* dst_mask */ | |
1626 | FALSE), /* pcrel_offset */ | |
1627 | ||
1628 | HOWTO (R_ARM_RABS32, /* type */ | |
1629 | 0, /* rightshift */ | |
1630 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1631 | 0, /* bitsize */ | |
1632 | FALSE, /* pc_relative */ | |
1633 | 0, /* bitpos */ | |
1634 | complain_overflow_dont,/* complain_on_overflow */ | |
1635 | bfd_elf_generic_reloc, /* special_function */ | |
1636 | "R_ARM_RABS32", /* name */ | |
1637 | FALSE, /* partial_inplace */ | |
1638 | 0, /* src_mask */ | |
1639 | 0, /* dst_mask */ | |
1640 | FALSE), /* pcrel_offset */ | |
1641 | ||
1642 | HOWTO (R_ARM_RPC24, /* type */ | |
1643 | 0, /* rightshift */ | |
1644 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1645 | 0, /* bitsize */ | |
1646 | FALSE, /* pc_relative */ | |
1647 | 0, /* bitpos */ | |
1648 | complain_overflow_dont,/* complain_on_overflow */ | |
1649 | bfd_elf_generic_reloc, /* special_function */ | |
1650 | "R_ARM_RPC24", /* name */ | |
1651 | FALSE, /* partial_inplace */ | |
1652 | 0, /* src_mask */ | |
1653 | 0, /* dst_mask */ | |
1654 | FALSE), /* pcrel_offset */ | |
1655 | ||
1656 | HOWTO (R_ARM_RBASE, /* type */ | |
1657 | 0, /* rightshift */ | |
1658 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1659 | 0, /* bitsize */ | |
1660 | FALSE, /* pc_relative */ | |
1661 | 0, /* bitpos */ | |
1662 | complain_overflow_dont,/* complain_on_overflow */ | |
1663 | bfd_elf_generic_reloc, /* special_function */ | |
1664 | "R_ARM_RBASE", /* name */ | |
1665 | FALSE, /* partial_inplace */ | |
1666 | 0, /* src_mask */ | |
1667 | 0, /* dst_mask */ | |
1668 | FALSE) /* pcrel_offset */ | |
1669 | }; | |
1670 | ||
1671 | static reloc_howto_type * | |
1672 | elf32_arm_howto_from_type (unsigned int r_type) | |
1673 | { | |
906e58ca | 1674 | if (r_type < ARRAY_SIZE (elf32_arm_howto_table_1)) |
c19d1205 | 1675 | return &elf32_arm_howto_table_1[r_type]; |
ba93b8ac | 1676 | |
c19d1205 | 1677 | if (r_type >= R_ARM_RREL32 |
906e58ca | 1678 | && r_type < R_ARM_RREL32 + ARRAY_SIZE (elf32_arm_howto_table_2)) |
4962c51a | 1679 | return &elf32_arm_howto_table_2[r_type - R_ARM_RREL32]; |
7f266840 | 1680 | |
c19d1205 | 1681 | return NULL; |
7f266840 DJ |
1682 | } |
1683 | ||
1684 | static void | |
1685 | elf32_arm_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED, arelent * bfd_reloc, | |
1686 | Elf_Internal_Rela * elf_reloc) | |
1687 | { | |
1688 | unsigned int r_type; | |
1689 | ||
1690 | r_type = ELF32_R_TYPE (elf_reloc->r_info); | |
1691 | bfd_reloc->howto = elf32_arm_howto_from_type (r_type); | |
1692 | } | |
1693 | ||
1694 | struct elf32_arm_reloc_map | |
1695 | { | |
1696 | bfd_reloc_code_real_type bfd_reloc_val; | |
1697 | unsigned char elf_reloc_val; | |
1698 | }; | |
1699 | ||
1700 | /* All entries in this list must also be present in elf32_arm_howto_table. */ | |
1701 | static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] = | |
1702 | { | |
1703 | {BFD_RELOC_NONE, R_ARM_NONE}, | |
1704 | {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24}, | |
39b41c9c PB |
1705 | {BFD_RELOC_ARM_PCREL_CALL, R_ARM_CALL}, |
1706 | {BFD_RELOC_ARM_PCREL_JUMP, R_ARM_JUMP24}, | |
7f266840 DJ |
1707 | {BFD_RELOC_ARM_PCREL_BLX, R_ARM_XPC25}, |
1708 | {BFD_RELOC_THUMB_PCREL_BLX, R_ARM_THM_XPC22}, | |
1709 | {BFD_RELOC_32, R_ARM_ABS32}, | |
1710 | {BFD_RELOC_32_PCREL, R_ARM_REL32}, | |
1711 | {BFD_RELOC_8, R_ARM_ABS8}, | |
1712 | {BFD_RELOC_16, R_ARM_ABS16}, | |
1713 | {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12}, | |
1714 | {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5}, | |
c19d1205 ZW |
1715 | {BFD_RELOC_THUMB_PCREL_BRANCH25, R_ARM_THM_JUMP24}, |
1716 | {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_CALL}, | |
1717 | {BFD_RELOC_THUMB_PCREL_BRANCH12, R_ARM_THM_JUMP11}, | |
1718 | {BFD_RELOC_THUMB_PCREL_BRANCH20, R_ARM_THM_JUMP19}, | |
1719 | {BFD_RELOC_THUMB_PCREL_BRANCH9, R_ARM_THM_JUMP8}, | |
1720 | {BFD_RELOC_THUMB_PCREL_BRANCH7, R_ARM_THM_JUMP6}, | |
7f266840 DJ |
1721 | {BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT}, |
1722 | {BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT}, | |
1723 | {BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE}, | |
c19d1205 | 1724 | {BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF32}, |
7f266840 DJ |
1725 | {BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC}, |
1726 | {BFD_RELOC_ARM_GOT32, R_ARM_GOT32}, | |
1727 | {BFD_RELOC_ARM_PLT32, R_ARM_PLT32}, | |
1728 | {BFD_RELOC_ARM_TARGET1, R_ARM_TARGET1}, | |
1729 | {BFD_RELOC_ARM_ROSEGREL32, R_ARM_ROSEGREL32}, | |
1730 | {BFD_RELOC_ARM_SBREL32, R_ARM_SBREL32}, | |
1731 | {BFD_RELOC_ARM_PREL31, R_ARM_PREL31}, | |
ba93b8ac DJ |
1732 | {BFD_RELOC_ARM_TARGET2, R_ARM_TARGET2}, |
1733 | {BFD_RELOC_ARM_PLT32, R_ARM_PLT32}, | |
1734 | {BFD_RELOC_ARM_TLS_GD32, R_ARM_TLS_GD32}, | |
1735 | {BFD_RELOC_ARM_TLS_LDO32, R_ARM_TLS_LDO32}, | |
1736 | {BFD_RELOC_ARM_TLS_LDM32, R_ARM_TLS_LDM32}, | |
1737 | {BFD_RELOC_ARM_TLS_DTPMOD32, R_ARM_TLS_DTPMOD32}, | |
1738 | {BFD_RELOC_ARM_TLS_DTPOFF32, R_ARM_TLS_DTPOFF32}, | |
1739 | {BFD_RELOC_ARM_TLS_TPOFF32, R_ARM_TLS_TPOFF32}, | |
1740 | {BFD_RELOC_ARM_TLS_IE32, R_ARM_TLS_IE32}, | |
1741 | {BFD_RELOC_ARM_TLS_LE32, R_ARM_TLS_LE32}, | |
c19d1205 ZW |
1742 | {BFD_RELOC_VTABLE_INHERIT, R_ARM_GNU_VTINHERIT}, |
1743 | {BFD_RELOC_VTABLE_ENTRY, R_ARM_GNU_VTENTRY}, | |
b6895b4f PB |
1744 | {BFD_RELOC_ARM_MOVW, R_ARM_MOVW_ABS_NC}, |
1745 | {BFD_RELOC_ARM_MOVT, R_ARM_MOVT_ABS}, | |
1746 | {BFD_RELOC_ARM_MOVW_PCREL, R_ARM_MOVW_PREL_NC}, | |
1747 | {BFD_RELOC_ARM_MOVT_PCREL, R_ARM_MOVT_PREL}, | |
1748 | {BFD_RELOC_ARM_THUMB_MOVW, R_ARM_THM_MOVW_ABS_NC}, | |
1749 | {BFD_RELOC_ARM_THUMB_MOVT, R_ARM_THM_MOVT_ABS}, | |
1750 | {BFD_RELOC_ARM_THUMB_MOVW_PCREL, R_ARM_THM_MOVW_PREL_NC}, | |
1751 | {BFD_RELOC_ARM_THUMB_MOVT_PCREL, R_ARM_THM_MOVT_PREL}, | |
4962c51a MS |
1752 | {BFD_RELOC_ARM_ALU_PC_G0_NC, R_ARM_ALU_PC_G0_NC}, |
1753 | {BFD_RELOC_ARM_ALU_PC_G0, R_ARM_ALU_PC_G0}, | |
1754 | {BFD_RELOC_ARM_ALU_PC_G1_NC, R_ARM_ALU_PC_G1_NC}, | |
1755 | {BFD_RELOC_ARM_ALU_PC_G1, R_ARM_ALU_PC_G1}, | |
1756 | {BFD_RELOC_ARM_ALU_PC_G2, R_ARM_ALU_PC_G2}, | |
1757 | {BFD_RELOC_ARM_LDR_PC_G0, R_ARM_LDR_PC_G0}, | |
1758 | {BFD_RELOC_ARM_LDR_PC_G1, R_ARM_LDR_PC_G1}, | |
1759 | {BFD_RELOC_ARM_LDR_PC_G2, R_ARM_LDR_PC_G2}, | |
1760 | {BFD_RELOC_ARM_LDRS_PC_G0, R_ARM_LDRS_PC_G0}, | |
1761 | {BFD_RELOC_ARM_LDRS_PC_G1, R_ARM_LDRS_PC_G1}, | |
1762 | {BFD_RELOC_ARM_LDRS_PC_G2, R_ARM_LDRS_PC_G2}, | |
1763 | {BFD_RELOC_ARM_LDC_PC_G0, R_ARM_LDC_PC_G0}, | |
1764 | {BFD_RELOC_ARM_LDC_PC_G1, R_ARM_LDC_PC_G1}, | |
1765 | {BFD_RELOC_ARM_LDC_PC_G2, R_ARM_LDC_PC_G2}, | |
1766 | {BFD_RELOC_ARM_ALU_SB_G0_NC, R_ARM_ALU_SB_G0_NC}, | |
1767 | {BFD_RELOC_ARM_ALU_SB_G0, R_ARM_ALU_SB_G0}, | |
1768 | {BFD_RELOC_ARM_ALU_SB_G1_NC, R_ARM_ALU_SB_G1_NC}, | |
1769 | {BFD_RELOC_ARM_ALU_SB_G1, R_ARM_ALU_SB_G1}, | |
1770 | {BFD_RELOC_ARM_ALU_SB_G2, R_ARM_ALU_SB_G2}, | |
1771 | {BFD_RELOC_ARM_LDR_SB_G0, R_ARM_LDR_SB_G0}, | |
1772 | {BFD_RELOC_ARM_LDR_SB_G1, R_ARM_LDR_SB_G1}, | |
1773 | {BFD_RELOC_ARM_LDR_SB_G2, R_ARM_LDR_SB_G2}, | |
1774 | {BFD_RELOC_ARM_LDRS_SB_G0, R_ARM_LDRS_SB_G0}, | |
1775 | {BFD_RELOC_ARM_LDRS_SB_G1, R_ARM_LDRS_SB_G1}, | |
1776 | {BFD_RELOC_ARM_LDRS_SB_G2, R_ARM_LDRS_SB_G2}, | |
1777 | {BFD_RELOC_ARM_LDC_SB_G0, R_ARM_LDC_SB_G0}, | |
1778 | {BFD_RELOC_ARM_LDC_SB_G1, R_ARM_LDC_SB_G1}, | |
845b51d6 PB |
1779 | {BFD_RELOC_ARM_LDC_SB_G2, R_ARM_LDC_SB_G2}, |
1780 | {BFD_RELOC_ARM_V4BX, R_ARM_V4BX} | |
7f266840 DJ |
1781 | }; |
1782 | ||
1783 | static reloc_howto_type * | |
f1c71a59 ZW |
1784 | elf32_arm_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
1785 | bfd_reloc_code_real_type code) | |
7f266840 DJ |
1786 | { |
1787 | unsigned int i; | |
8029a119 | 1788 | |
906e58ca | 1789 | for (i = 0; i < ARRAY_SIZE (elf32_arm_reloc_map); i ++) |
c19d1205 ZW |
1790 | if (elf32_arm_reloc_map[i].bfd_reloc_val == code) |
1791 | return elf32_arm_howto_from_type (elf32_arm_reloc_map[i].elf_reloc_val); | |
7f266840 | 1792 | |
c19d1205 | 1793 | return NULL; |
7f266840 DJ |
1794 | } |
1795 | ||
157090f7 AM |
1796 | static reloc_howto_type * |
1797 | elf32_arm_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1798 | const char *r_name) | |
1799 | { | |
1800 | unsigned int i; | |
1801 | ||
906e58ca | 1802 | for (i = 0; i < ARRAY_SIZE (elf32_arm_howto_table_1); i++) |
157090f7 AM |
1803 | if (elf32_arm_howto_table_1[i].name != NULL |
1804 | && strcasecmp (elf32_arm_howto_table_1[i].name, r_name) == 0) | |
1805 | return &elf32_arm_howto_table_1[i]; | |
1806 | ||
906e58ca | 1807 | for (i = 0; i < ARRAY_SIZE (elf32_arm_howto_table_2); i++) |
157090f7 AM |
1808 | if (elf32_arm_howto_table_2[i].name != NULL |
1809 | && strcasecmp (elf32_arm_howto_table_2[i].name, r_name) == 0) | |
1810 | return &elf32_arm_howto_table_2[i]; | |
1811 | ||
1812 | return NULL; | |
1813 | } | |
1814 | ||
906e58ca NC |
1815 | /* Support for core dump NOTE sections. */ |
1816 | ||
7f266840 | 1817 | static bfd_boolean |
f1c71a59 | 1818 | elf32_arm_nabi_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
7f266840 DJ |
1819 | { |
1820 | int offset; | |
1821 | size_t size; | |
1822 | ||
1823 | switch (note->descsz) | |
1824 | { | |
1825 | default: | |
1826 | return FALSE; | |
1827 | ||
8029a119 | 1828 | case 148: /* Linux/ARM 32-bit. */ |
7f266840 DJ |
1829 | /* pr_cursig */ |
1830 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
1831 | ||
1832 | /* pr_pid */ | |
1833 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); | |
1834 | ||
1835 | /* pr_reg */ | |
1836 | offset = 72; | |
1837 | size = 72; | |
1838 | ||
1839 | break; | |
1840 | } | |
1841 | ||
1842 | /* Make a ".reg/999" section. */ | |
1843 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
1844 | size, note->descpos + offset); | |
1845 | } | |
1846 | ||
1847 | static bfd_boolean | |
f1c71a59 | 1848 | elf32_arm_nabi_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
7f266840 DJ |
1849 | { |
1850 | switch (note->descsz) | |
1851 | { | |
1852 | default: | |
1853 | return FALSE; | |
1854 | ||
8029a119 | 1855 | case 124: /* Linux/ARM elf_prpsinfo. */ |
7f266840 DJ |
1856 | elf_tdata (abfd)->core_program |
1857 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); | |
1858 | elf_tdata (abfd)->core_command | |
1859 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); | |
1860 | } | |
1861 | ||
1862 | /* Note that for some reason, a spurious space is tacked | |
1863 | onto the end of the args in some (at least one anyway) | |
1864 | implementations, so strip it off if it exists. */ | |
7f266840 DJ |
1865 | { |
1866 | char *command = elf_tdata (abfd)->core_command; | |
1867 | int n = strlen (command); | |
1868 | ||
1869 | if (0 < n && command[n - 1] == ' ') | |
1870 | command[n - 1] = '\0'; | |
1871 | } | |
1872 | ||
1873 | return TRUE; | |
1874 | } | |
1875 | ||
1876 | #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec | |
1877 | #define TARGET_LITTLE_NAME "elf32-littlearm" | |
1878 | #define TARGET_BIG_SYM bfd_elf32_bigarm_vec | |
1879 | #define TARGET_BIG_NAME "elf32-bigarm" | |
1880 | ||
1881 | #define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus | |
1882 | #define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo | |
1883 | ||
252b5132 RH |
1884 | typedef unsigned long int insn32; |
1885 | typedef unsigned short int insn16; | |
1886 | ||
3a4a14e9 PB |
1887 | /* In lieu of proper flags, assume all EABIv4 or later objects are |
1888 | interworkable. */ | |
57e8b36a | 1889 | #define INTERWORK_FLAG(abfd) \ |
3a4a14e9 | 1890 | (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \ |
3e6b1042 DJ |
1891 | || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK) \ |
1892 | || ((abfd)->flags & BFD_LINKER_CREATED)) | |
9b485d32 | 1893 | |
252b5132 RH |
1894 | /* The linker script knows the section names for placement. |
1895 | The entry_names are used to do simple name mangling on the stubs. | |
1896 | Given a function name, and its type, the stub can be found. The | |
9b485d32 | 1897 | name can be changed. The only requirement is the %s be present. */ |
252b5132 RH |
1898 | #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t" |
1899 | #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb" | |
1900 | ||
1901 | #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7" | |
1902 | #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm" | |
1903 | ||
c7b8f16e JB |
1904 | #define VFP11_ERRATUM_VENEER_SECTION_NAME ".vfp11_veneer" |
1905 | #define VFP11_ERRATUM_VENEER_ENTRY_NAME "__vfp11_veneer_%x" | |
1906 | ||
845b51d6 PB |
1907 | #define ARM_BX_GLUE_SECTION_NAME ".v4_bx" |
1908 | #define ARM_BX_GLUE_ENTRY_NAME "__bx_r%d" | |
1909 | ||
7413f23f DJ |
1910 | #define STUB_ENTRY_NAME "__%s_veneer" |
1911 | ||
252b5132 RH |
1912 | /* The name of the dynamic interpreter. This is put in the .interp |
1913 | section. */ | |
1914 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
1915 | ||
5e681ec4 PB |
1916 | #ifdef FOUR_WORD_PLT |
1917 | ||
252b5132 RH |
1918 | /* The first entry in a procedure linkage table looks like |
1919 | this. It is set up so that any shared library function that is | |
59f2c4e7 | 1920 | called before the relocation has been set up calls the dynamic |
9b485d32 | 1921 | linker first. */ |
e5a52504 | 1922 | static const bfd_vma elf32_arm_plt0_entry [] = |
5e681ec4 PB |
1923 | { |
1924 | 0xe52de004, /* str lr, [sp, #-4]! */ | |
1925 | 0xe59fe010, /* ldr lr, [pc, #16] */ | |
1926 | 0xe08fe00e, /* add lr, pc, lr */ | |
1927 | 0xe5bef008, /* ldr pc, [lr, #8]! */ | |
1928 | }; | |
1929 | ||
1930 | /* Subsequent entries in a procedure linkage table look like | |
1931 | this. */ | |
e5a52504 | 1932 | static const bfd_vma elf32_arm_plt_entry [] = |
5e681ec4 PB |
1933 | { |
1934 | 0xe28fc600, /* add ip, pc, #NN */ | |
1935 | 0xe28cca00, /* add ip, ip, #NN */ | |
1936 | 0xe5bcf000, /* ldr pc, [ip, #NN]! */ | |
1937 | 0x00000000, /* unused */ | |
1938 | }; | |
1939 | ||
1940 | #else | |
1941 | ||
5e681ec4 PB |
1942 | /* The first entry in a procedure linkage table looks like |
1943 | this. It is set up so that any shared library function that is | |
1944 | called before the relocation has been set up calls the dynamic | |
1945 | linker first. */ | |
e5a52504 | 1946 | static const bfd_vma elf32_arm_plt0_entry [] = |
917583ad | 1947 | { |
5e681ec4 PB |
1948 | 0xe52de004, /* str lr, [sp, #-4]! */ |
1949 | 0xe59fe004, /* ldr lr, [pc, #4] */ | |
1950 | 0xe08fe00e, /* add lr, pc, lr */ | |
1951 | 0xe5bef008, /* ldr pc, [lr, #8]! */ | |
1952 | 0x00000000, /* &GOT[0] - . */ | |
917583ad | 1953 | }; |
252b5132 RH |
1954 | |
1955 | /* Subsequent entries in a procedure linkage table look like | |
1956 | this. */ | |
e5a52504 | 1957 | static const bfd_vma elf32_arm_plt_entry [] = |
5e681ec4 PB |
1958 | { |
1959 | 0xe28fc600, /* add ip, pc, #0xNN00000 */ | |
1960 | 0xe28cca00, /* add ip, ip, #0xNN000 */ | |
1961 | 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */ | |
1962 | }; | |
1963 | ||
1964 | #endif | |
252b5132 | 1965 | |
00a97672 RS |
1966 | /* The format of the first entry in the procedure linkage table |
1967 | for a VxWorks executable. */ | |
1968 | static const bfd_vma elf32_arm_vxworks_exec_plt0_entry[] = | |
1969 | { | |
1970 | 0xe52dc008, /* str ip,[sp,#-8]! */ | |
1971 | 0xe59fc000, /* ldr ip,[pc] */ | |
1972 | 0xe59cf008, /* ldr pc,[ip,#8] */ | |
1973 | 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */ | |
1974 | }; | |
1975 | ||
1976 | /* The format of subsequent entries in a VxWorks executable. */ | |
1977 | static const bfd_vma elf32_arm_vxworks_exec_plt_entry[] = | |
1978 | { | |
1979 | 0xe59fc000, /* ldr ip,[pc] */ | |
1980 | 0xe59cf000, /* ldr pc,[ip] */ | |
1981 | 0x00000000, /* .long @got */ | |
1982 | 0xe59fc000, /* ldr ip,[pc] */ | |
1983 | 0xea000000, /* b _PLT */ | |
1984 | 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */ | |
1985 | }; | |
1986 | ||
1987 | /* The format of entries in a VxWorks shared library. */ | |
1988 | static const bfd_vma elf32_arm_vxworks_shared_plt_entry[] = | |
1989 | { | |
1990 | 0xe59fc000, /* ldr ip,[pc] */ | |
1991 | 0xe79cf009, /* ldr pc,[ip,r9] */ | |
1992 | 0x00000000, /* .long @got */ | |
1993 | 0xe59fc000, /* ldr ip,[pc] */ | |
1994 | 0xe599f008, /* ldr pc,[r9,#8] */ | |
1995 | 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */ | |
1996 | }; | |
1997 | ||
b7693d02 DJ |
1998 | /* An initial stub used if the PLT entry is referenced from Thumb code. */ |
1999 | #define PLT_THUMB_STUB_SIZE 4 | |
2000 | static const bfd_vma elf32_arm_plt_thumb_stub [] = | |
2001 | { | |
2002 | 0x4778, /* bx pc */ | |
2003 | 0x46c0 /* nop */ | |
2004 | }; | |
2005 | ||
e5a52504 MM |
2006 | /* The entries in a PLT when using a DLL-based target with multiple |
2007 | address spaces. */ | |
906e58ca | 2008 | static const bfd_vma elf32_arm_symbian_plt_entry [] = |
e5a52504 | 2009 | { |
83a358aa | 2010 | 0xe51ff004, /* ldr pc, [pc, #-4] */ |
e5a52504 MM |
2011 | 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */ |
2012 | }; | |
2013 | ||
906e58ca NC |
2014 | #define ARM_MAX_FWD_BRANCH_OFFSET ((((1 << 23) - 1) << 2) + 8) |
2015 | #define ARM_MAX_BWD_BRANCH_OFFSET ((-((1 << 23) << 2)) + 8) | |
2016 | #define THM_MAX_FWD_BRANCH_OFFSET ((1 << 22) -2 + 4) | |
2017 | #define THM_MAX_BWD_BRANCH_OFFSET (-(1 << 22) + 4) | |
2018 | #define THM2_MAX_FWD_BRANCH_OFFSET (((1 << 24) - 2) + 4) | |
2019 | #define THM2_MAX_BWD_BRANCH_OFFSET (-(1 << 24) + 4) | |
2020 | ||
461a49ca DJ |
2021 | enum stub_insn_type |
2022 | { | |
2023 | THUMB16_TYPE = 1, | |
2024 | THUMB32_TYPE, | |
2025 | ARM_TYPE, | |
2026 | DATA_TYPE | |
2027 | }; | |
2028 | ||
461a49ca DJ |
2029 | #define THUMB16_INSN(X) {(X), THUMB16_TYPE, R_ARM_NONE, 0} |
2030 | #define THUMB32_INSN(X) {(X), THUMB32_TYPE, R_ARM_NONE, 0} | |
2031 | #define ARM_INSN(X) {(X), ARM_TYPE, R_ARM_NONE, 0} | |
2032 | #define ARM_REL_INSN(X, Z) {(X), ARM_TYPE, R_ARM_JUMP24, (Z)} | |
2033 | #define DATA_WORD(X,Y,Z) {(X), DATA_TYPE, (Y), (Z)} | |
2034 | ||
2035 | typedef struct | |
2036 | { | |
2037 | bfd_vma data; | |
2038 | enum stub_insn_type type; | |
ebe24dd4 | 2039 | unsigned int r_type; |
461a49ca DJ |
2040 | int reloc_addend; |
2041 | } insn_sequence; | |
2042 | ||
fea2b4d6 CL |
2043 | /* Arm/Thumb -> Arm/Thumb long branch stub. On V5T and above, use blx |
2044 | to reach the stub if necessary. */ | |
461a49ca | 2045 | static const insn_sequence elf32_arm_stub_long_branch_any_any[] = |
906e58ca | 2046 | { |
461a49ca DJ |
2047 | ARM_INSN(0xe51ff004), /* ldr pc, [pc, #-4] */ |
2048 | DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */ | |
906e58ca NC |
2049 | }; |
2050 | ||
fea2b4d6 CL |
2051 | /* V4T Arm -> Thumb long branch stub. Used on V4T where blx is not |
2052 | available. */ | |
461a49ca | 2053 | static const insn_sequence elf32_arm_stub_long_branch_v4t_arm_thumb[] = |
906e58ca | 2054 | { |
461a49ca DJ |
2055 | ARM_INSN(0xe59fc000), /* ldr ip, [pc, #0] */ |
2056 | ARM_INSN(0xe12fff1c), /* bx ip */ | |
2057 | DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */ | |
906e58ca NC |
2058 | }; |
2059 | ||
d3626fb0 | 2060 | /* Thumb -> Thumb long branch stub. Used on M-profile architectures. */ |
461a49ca | 2061 | static const insn_sequence elf32_arm_stub_long_branch_thumb_only[] = |
906e58ca | 2062 | { |
461a49ca DJ |
2063 | THUMB16_INSN(0xb401), /* push {r0} */ |
2064 | THUMB16_INSN(0x4802), /* ldr r0, [pc, #8] */ | |
2065 | THUMB16_INSN(0x4684), /* mov ip, r0 */ | |
2066 | THUMB16_INSN(0xbc01), /* pop {r0} */ | |
2067 | THUMB16_INSN(0x4760), /* bx ip */ | |
2068 | THUMB16_INSN(0xbf00), /* nop */ | |
2069 | DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */ | |
906e58ca NC |
2070 | }; |
2071 | ||
d3626fb0 CL |
2072 | /* V4T Thumb -> Thumb long branch stub. Using the stack is not |
2073 | allowed. */ | |
2074 | static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_thumb[] = | |
2075 | { | |
2076 | THUMB16_INSN(0x4778), /* bx pc */ | |
2077 | THUMB16_INSN(0x46c0), /* nop */ | |
2078 | ARM_INSN(0xe59fc000), /* ldr ip, [pc, #0] */ | |
2079 | ARM_INSN(0xe12fff1c), /* bx ip */ | |
2080 | DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */ | |
2081 | }; | |
2082 | ||
fea2b4d6 CL |
2083 | /* V4T Thumb -> ARM long branch stub. Used on V4T where blx is not |
2084 | available. */ | |
461a49ca | 2085 | static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_arm[] = |
906e58ca | 2086 | { |
461a49ca DJ |
2087 | THUMB16_INSN(0x4778), /* bx pc */ |
2088 | THUMB16_INSN(0x46c0), /* nop */ | |
2089 | ARM_INSN(0xe51ff004), /* ldr pc, [pc, #-4] */ | |
2090 | DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */ | |
906e58ca NC |
2091 | }; |
2092 | ||
fea2b4d6 CL |
2093 | /* V4T Thumb -> ARM short branch stub. Shorter variant of the above |
2094 | one, when the destination is close enough. */ | |
461a49ca | 2095 | static const insn_sequence elf32_arm_stub_short_branch_v4t_thumb_arm[] = |
c820be07 | 2096 | { |
461a49ca DJ |
2097 | THUMB16_INSN(0x4778), /* bx pc */ |
2098 | THUMB16_INSN(0x46c0), /* nop */ | |
2099 | ARM_REL_INSN(0xea000000, -8), /* b (X-8) */ | |
c820be07 NC |
2100 | }; |
2101 | ||
cf3eccff | 2102 | /* ARM/Thumb -> ARM long branch stub, PIC. On V5T and above, use |
fea2b4d6 | 2103 | blx to reach the stub if necessary. */ |
cf3eccff | 2104 | static const insn_sequence elf32_arm_stub_long_branch_any_arm_pic[] = |
906e58ca | 2105 | { |
461a49ca DJ |
2106 | ARM_INSN(0xe59fc000), /* ldr r12, [pc] */ |
2107 | ARM_INSN(0xe08ff00c), /* add pc, pc, ip */ | |
2108 | DATA_WORD(0, R_ARM_REL32, -4), /* dcd R_ARM_REL32(X-4) */ | |
906e58ca NC |
2109 | }; |
2110 | ||
cf3eccff DJ |
2111 | /* ARM/Thumb -> Thumb long branch stub, PIC. On V5T and above, use |
2112 | blx to reach the stub if necessary. We can not add into pc; | |
2113 | it is not guaranteed to mode switch (different in ARMv6 and | |
2114 | ARMv7). */ | |
2115 | static const insn_sequence elf32_arm_stub_long_branch_any_thumb_pic[] = | |
2116 | { | |
2117 | ARM_INSN(0xe59fc004), /* ldr r12, [pc, #4] */ | |
2118 | ARM_INSN(0xe08fc00c), /* add ip, pc, ip */ | |
2119 | ARM_INSN(0xe12fff1c), /* bx ip */ | |
2120 | DATA_WORD(0, R_ARM_REL32, 0), /* dcd R_ARM_REL32(X) */ | |
2121 | }; | |
2122 | ||
ebe24dd4 CL |
2123 | /* V4T ARM -> ARM long branch stub, PIC. */ |
2124 | static const insn_sequence elf32_arm_stub_long_branch_v4t_arm_thumb_pic[] = | |
2125 | { | |
2126 | ARM_INSN(0xe59fc004), /* ldr ip, [pc, #4] */ | |
2127 | ARM_INSN(0xe08fc00c), /* add ip, pc, ip */ | |
2128 | ARM_INSN(0xe12fff1c), /* bx ip */ | |
2129 | DATA_WORD(0, R_ARM_REL32, 0), /* dcd R_ARM_REL32(X) */ | |
2130 | }; | |
2131 | ||
2132 | /* V4T Thumb -> ARM long branch stub, PIC. */ | |
2133 | static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_arm_pic[] = | |
2134 | { | |
2135 | THUMB16_INSN(0x4778), /* bx pc */ | |
2136 | THUMB16_INSN(0x46c0), /* nop */ | |
2137 | ARM_INSN(0xe59fc000), /* ldr ip, [pc, #0] */ | |
2138 | ARM_INSN(0xe08cf00f), /* add pc, ip, pc */ | |
2139 | DATA_WORD(0, R_ARM_REL32, -4), /* dcd R_ARM_REL32(X) */ | |
2140 | }; | |
2141 | ||
d3626fb0 CL |
2142 | /* Thumb -> Thumb long branch stub, PIC. Used on M-profile |
2143 | architectures. */ | |
ebe24dd4 CL |
2144 | static const insn_sequence elf32_arm_stub_long_branch_thumb_only_pic[] = |
2145 | { | |
2146 | THUMB16_INSN(0xb401), /* push {r0} */ | |
2147 | THUMB16_INSN(0x4802), /* ldr r0, [pc, #8] */ | |
2148 | THUMB16_INSN(0x46fc), /* mov ip, pc */ | |
2149 | THUMB16_INSN(0x4484), /* add ip, r0 */ | |
2150 | THUMB16_INSN(0xbc01), /* pop {r0} */ | |
2151 | THUMB16_INSN(0x4760), /* bx ip */ | |
2152 | DATA_WORD(0, R_ARM_REL32, 4), /* dcd R_ARM_REL32(X) */ | |
2153 | }; | |
2154 | ||
d3626fb0 CL |
2155 | /* V4T Thumb -> Thumb long branch stub, PIC. Using the stack is not |
2156 | allowed. */ | |
2157 | static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_thumb_pic[] = | |
2158 | { | |
2159 | THUMB16_INSN(0x4778), /* bx pc */ | |
2160 | THUMB16_INSN(0x46c0), /* nop */ | |
2161 | ARM_INSN(0xe59fc004), /* ldr ip, [pc, #4] */ | |
2162 | ARM_INSN(0xe08fc00c), /* add ip, pc, ip */ | |
2163 | ARM_INSN(0xe12fff1c), /* bx ip */ | |
2164 | DATA_WORD(0, R_ARM_REL32, 0), /* dcd R_ARM_REL32(X) */ | |
2165 | }; | |
2166 | ||
906e58ca NC |
2167 | /* Section name for stubs is the associated section name plus this |
2168 | string. */ | |
2169 | #define STUB_SUFFIX ".stub" | |
2170 | ||
738a79f6 CL |
2171 | /* One entry per long/short branch stub defined above. */ |
2172 | #define DEF_STUBS \ | |
2173 | DEF_STUB(long_branch_any_any) \ | |
2174 | DEF_STUB(long_branch_v4t_arm_thumb) \ | |
2175 | DEF_STUB(long_branch_thumb_only) \ | |
2176 | DEF_STUB(long_branch_v4t_thumb_thumb) \ | |
2177 | DEF_STUB(long_branch_v4t_thumb_arm) \ | |
2178 | DEF_STUB(short_branch_v4t_thumb_arm) \ | |
2179 | DEF_STUB(long_branch_any_arm_pic) \ | |
2180 | DEF_STUB(long_branch_any_thumb_pic) \ | |
2181 | DEF_STUB(long_branch_v4t_thumb_thumb_pic) \ | |
2182 | DEF_STUB(long_branch_v4t_arm_thumb_pic) \ | |
2183 | DEF_STUB(long_branch_v4t_thumb_arm_pic) \ | |
2184 | DEF_STUB(long_branch_thumb_only_pic) | |
2185 | ||
2186 | #define DEF_STUB(x) arm_stub_##x, | |
2187 | enum elf32_arm_stub_type { | |
906e58ca | 2188 | arm_stub_none, |
738a79f6 CL |
2189 | DEF_STUBS |
2190 | }; | |
2191 | #undef DEF_STUB | |
2192 | ||
2193 | typedef struct | |
2194 | { | |
2195 | const insn_sequence* template; | |
2196 | int template_size; | |
2197 | } stub_def; | |
2198 | ||
2199 | #define DEF_STUB(x) {elf32_arm_stub_##x, ARRAY_SIZE(elf32_arm_stub_##x)}, | |
2200 | static const stub_def stub_definitions[] = { | |
2201 | {NULL, 0}, | |
2202 | DEF_STUBS | |
906e58ca NC |
2203 | }; |
2204 | ||
2205 | struct elf32_arm_stub_hash_entry | |
2206 | { | |
2207 | /* Base hash table entry structure. */ | |
2208 | struct bfd_hash_entry root; | |
2209 | ||
2210 | /* The stub section. */ | |
2211 | asection *stub_sec; | |
2212 | ||
2213 | /* Offset within stub_sec of the beginning of this stub. */ | |
2214 | bfd_vma stub_offset; | |
2215 | ||
2216 | /* Given the symbol's value and its section we can determine its final | |
2217 | value when building the stubs (so the stub knows where to jump). */ | |
2218 | bfd_vma target_value; | |
2219 | asection *target_section; | |
2220 | ||
461a49ca | 2221 | /* The stub type. */ |
906e58ca | 2222 | enum elf32_arm_stub_type stub_type; |
461a49ca DJ |
2223 | /* Its encoding size in bytes. */ |
2224 | int stub_size; | |
2225 | /* Its template. */ | |
2226 | const insn_sequence *stub_template; | |
2227 | /* The size of the template (number of entries). */ | |
2228 | int stub_template_size; | |
906e58ca NC |
2229 | |
2230 | /* The symbol table entry, if any, that this was derived from. */ | |
2231 | struct elf32_arm_link_hash_entry *h; | |
2232 | ||
2233 | /* Destination symbol type (STT_ARM_TFUNC, ...) */ | |
2234 | unsigned char st_type; | |
2235 | ||
2236 | /* Where this stub is being called from, or, in the case of combined | |
2237 | stub sections, the first input section in the group. */ | |
2238 | asection *id_sec; | |
7413f23f DJ |
2239 | |
2240 | /* The name for the local symbol at the start of this stub. The | |
2241 | stub name in the hash table has to be unique; this does not, so | |
2242 | it can be friendlier. */ | |
2243 | char *output_name; | |
906e58ca NC |
2244 | }; |
2245 | ||
e489d0ae PB |
2246 | /* Used to build a map of a section. This is required for mixed-endian |
2247 | code/data. */ | |
2248 | ||
2249 | typedef struct elf32_elf_section_map | |
2250 | { | |
2251 | bfd_vma vma; | |
2252 | char type; | |
2253 | } | |
2254 | elf32_arm_section_map; | |
2255 | ||
c7b8f16e JB |
2256 | /* Information about a VFP11 erratum veneer, or a branch to such a veneer. */ |
2257 | ||
2258 | typedef enum | |
2259 | { | |
2260 | VFP11_ERRATUM_BRANCH_TO_ARM_VENEER, | |
2261 | VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER, | |
2262 | VFP11_ERRATUM_ARM_VENEER, | |
2263 | VFP11_ERRATUM_THUMB_VENEER | |
2264 | } | |
2265 | elf32_vfp11_erratum_type; | |
2266 | ||
2267 | typedef struct elf32_vfp11_erratum_list | |
2268 | { | |
2269 | struct elf32_vfp11_erratum_list *next; | |
2270 | bfd_vma vma; | |
2271 | union | |
2272 | { | |
2273 | struct | |
2274 | { | |
2275 | struct elf32_vfp11_erratum_list *veneer; | |
2276 | unsigned int vfp_insn; | |
2277 | } b; | |
2278 | struct | |
2279 | { | |
2280 | struct elf32_vfp11_erratum_list *branch; | |
2281 | unsigned int id; | |
2282 | } v; | |
2283 | } u; | |
2284 | elf32_vfp11_erratum_type type; | |
2285 | } | |
2286 | elf32_vfp11_erratum_list; | |
2287 | ||
2468f9c9 PB |
2288 | typedef enum |
2289 | { | |
2290 | DELETE_EXIDX_ENTRY, | |
2291 | INSERT_EXIDX_CANTUNWIND_AT_END | |
2292 | } | |
2293 | arm_unwind_edit_type; | |
2294 | ||
2295 | /* A (sorted) list of edits to apply to an unwind table. */ | |
2296 | typedef struct arm_unwind_table_edit | |
2297 | { | |
2298 | arm_unwind_edit_type type; | |
2299 | /* Note: we sometimes want to insert an unwind entry corresponding to a | |
2300 | section different from the one we're currently writing out, so record the | |
2301 | (text) section this edit relates to here. */ | |
2302 | asection *linked_section; | |
2303 | unsigned int index; | |
2304 | struct arm_unwind_table_edit *next; | |
2305 | } | |
2306 | arm_unwind_table_edit; | |
2307 | ||
8e3de13a | 2308 | typedef struct _arm_elf_section_data |
e489d0ae | 2309 | { |
2468f9c9 | 2310 | /* Information about mapping symbols. */ |
e489d0ae | 2311 | struct bfd_elf_section_data elf; |
8e3de13a | 2312 | unsigned int mapcount; |
c7b8f16e | 2313 | unsigned int mapsize; |
e489d0ae | 2314 | elf32_arm_section_map *map; |
2468f9c9 | 2315 | /* Information about CPU errata. */ |
c7b8f16e JB |
2316 | unsigned int erratumcount; |
2317 | elf32_vfp11_erratum_list *erratumlist; | |
2468f9c9 PB |
2318 | /* Information about unwind tables. */ |
2319 | union | |
2320 | { | |
2321 | /* Unwind info attached to a text section. */ | |
2322 | struct | |
2323 | { | |
2324 | asection *arm_exidx_sec; | |
2325 | } text; | |
2326 | ||
2327 | /* Unwind info attached to an .ARM.exidx section. */ | |
2328 | struct | |
2329 | { | |
2330 | arm_unwind_table_edit *unwind_edit_list; | |
2331 | arm_unwind_table_edit *unwind_edit_tail; | |
2332 | } exidx; | |
2333 | } u; | |
8e3de13a NC |
2334 | } |
2335 | _arm_elf_section_data; | |
e489d0ae PB |
2336 | |
2337 | #define elf32_arm_section_data(sec) \ | |
8e3de13a | 2338 | ((_arm_elf_section_data *) elf_section_data (sec)) |
e489d0ae | 2339 | |
ba93b8ac DJ |
2340 | /* The size of the thread control block. */ |
2341 | #define TCB_SIZE 8 | |
2342 | ||
0ffa91dd | 2343 | struct elf_arm_obj_tdata |
ba93b8ac DJ |
2344 | { |
2345 | struct elf_obj_tdata root; | |
2346 | ||
2347 | /* tls_type for each local got entry. */ | |
2348 | char *local_got_tls_type; | |
ee065d83 | 2349 | |
bf21ed78 MS |
2350 | /* Zero to warn when linking objects with incompatible enum sizes. */ |
2351 | int no_enum_size_warning; | |
a9dc9481 JM |
2352 | |
2353 | /* Zero to warn when linking objects with incompatible wchar_t sizes. */ | |
2354 | int no_wchar_size_warning; | |
ba93b8ac DJ |
2355 | }; |
2356 | ||
0ffa91dd NC |
2357 | #define elf_arm_tdata(bfd) \ |
2358 | ((struct elf_arm_obj_tdata *) (bfd)->tdata.any) | |
ba93b8ac | 2359 | |
0ffa91dd NC |
2360 | #define elf32_arm_local_got_tls_type(bfd) \ |
2361 | (elf_arm_tdata (bfd)->local_got_tls_type) | |
2362 | ||
2363 | #define is_arm_elf(bfd) \ | |
2364 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
2365 | && elf_tdata (bfd) != NULL \ | |
2366 | && elf_object_id (bfd) == ARM_ELF_TDATA) | |
ba93b8ac DJ |
2367 | |
2368 | static bfd_boolean | |
2369 | elf32_arm_mkobject (bfd *abfd) | |
2370 | { | |
0ffa91dd NC |
2371 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_arm_obj_tdata), |
2372 | ARM_ELF_TDATA); | |
ba93b8ac DJ |
2373 | } |
2374 | ||
252b5132 RH |
2375 | /* The ARM linker needs to keep track of the number of relocs that it |
2376 | decides to copy in check_relocs for each symbol. This is so that | |
2377 | it can discard PC relative relocs if it doesn't need them when | |
2378 | linking with -Bsymbolic. We store the information in a field | |
2379 | extending the regular ELF linker hash table. */ | |
2380 | ||
ba93b8ac DJ |
2381 | /* This structure keeps track of the number of relocs we have copied |
2382 | for a given symbol. */ | |
5e681ec4 | 2383 | struct elf32_arm_relocs_copied |
917583ad NC |
2384 | { |
2385 | /* Next section. */ | |
5e681ec4 | 2386 | struct elf32_arm_relocs_copied * next; |
917583ad NC |
2387 | /* A section in dynobj. */ |
2388 | asection * section; | |
2389 | /* Number of relocs copied in this section. */ | |
2390 | bfd_size_type count; | |
ba93b8ac DJ |
2391 | /* Number of PC-relative relocs copied in this section. */ |
2392 | bfd_size_type pc_count; | |
917583ad | 2393 | }; |
252b5132 | 2394 | |
ba93b8ac DJ |
2395 | #define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent)) |
2396 | ||
ba96a88f | 2397 | /* Arm ELF linker hash entry. */ |
252b5132 | 2398 | struct elf32_arm_link_hash_entry |
917583ad NC |
2399 | { |
2400 | struct elf_link_hash_entry root; | |
252b5132 | 2401 | |
917583ad | 2402 | /* Number of PC relative relocs copied for this symbol. */ |
5e681ec4 | 2403 | struct elf32_arm_relocs_copied * relocs_copied; |
b7693d02 DJ |
2404 | |
2405 | /* We reference count Thumb references to a PLT entry separately, | |
2406 | so that we can emit the Thumb trampoline only if needed. */ | |
2407 | bfd_signed_vma plt_thumb_refcount; | |
2408 | ||
bd97cb95 DJ |
2409 | /* Some references from Thumb code may be eliminated by BL->BLX |
2410 | conversion, so record them separately. */ | |
2411 | bfd_signed_vma plt_maybe_thumb_refcount; | |
2412 | ||
b7693d02 DJ |
2413 | /* Since PLT entries have variable size if the Thumb prologue is |
2414 | used, we need to record the index into .got.plt instead of | |
2415 | recomputing it from the PLT offset. */ | |
2416 | bfd_signed_vma plt_got_offset; | |
ba93b8ac DJ |
2417 | |
2418 | #define GOT_UNKNOWN 0 | |
2419 | #define GOT_NORMAL 1 | |
2420 | #define GOT_TLS_GD 2 | |
2421 | #define GOT_TLS_IE 4 | |
2422 | unsigned char tls_type; | |
a4fd1a8e PB |
2423 | |
2424 | /* The symbol marking the real symbol location for exported thumb | |
2425 | symbols with Arm stubs. */ | |
2426 | struct elf_link_hash_entry *export_glue; | |
906e58ca | 2427 | |
da5938a2 | 2428 | /* A pointer to the most recently used stub hash entry against this |
8029a119 | 2429 | symbol. */ |
da5938a2 | 2430 | struct elf32_arm_stub_hash_entry *stub_cache; |
917583ad | 2431 | }; |
252b5132 | 2432 | |
252b5132 | 2433 | /* Traverse an arm ELF linker hash table. */ |
252b5132 RH |
2434 | #define elf32_arm_link_hash_traverse(table, func, info) \ |
2435 | (elf_link_hash_traverse \ | |
2436 | (&(table)->root, \ | |
b7693d02 | 2437 | (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
252b5132 RH |
2438 | (info))) |
2439 | ||
2440 | /* Get the ARM elf linker hash table from a link_info structure. */ | |
2441 | #define elf32_arm_hash_table(info) \ | |
2442 | ((struct elf32_arm_link_hash_table *) ((info)->hash)) | |
2443 | ||
906e58ca NC |
2444 | #define arm_stub_hash_lookup(table, string, create, copy) \ |
2445 | ((struct elf32_arm_stub_hash_entry *) \ | |
2446 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
2447 | ||
9b485d32 | 2448 | /* ARM ELF linker hash table. */ |
252b5132 | 2449 | struct elf32_arm_link_hash_table |
906e58ca NC |
2450 | { |
2451 | /* The main hash table. */ | |
2452 | struct elf_link_hash_table root; | |
252b5132 | 2453 | |
906e58ca NC |
2454 | /* The size in bytes of the section containing the Thumb-to-ARM glue. */ |
2455 | bfd_size_type thumb_glue_size; | |
252b5132 | 2456 | |
906e58ca NC |
2457 | /* The size in bytes of the section containing the ARM-to-Thumb glue. */ |
2458 | bfd_size_type arm_glue_size; | |
252b5132 | 2459 | |
906e58ca NC |
2460 | /* The size in bytes of section containing the ARMv4 BX veneers. */ |
2461 | bfd_size_type bx_glue_size; | |
845b51d6 | 2462 | |
906e58ca NC |
2463 | /* Offsets of ARMv4 BX veneers. Bit1 set if present, and Bit0 set when |
2464 | veneer has been populated. */ | |
2465 | bfd_vma bx_glue_offset[15]; | |
845b51d6 | 2466 | |
906e58ca NC |
2467 | /* The size in bytes of the section containing glue for VFP11 erratum |
2468 | veneers. */ | |
2469 | bfd_size_type vfp11_erratum_glue_size; | |
c7b8f16e | 2470 | |
906e58ca NC |
2471 | /* An arbitrary input BFD chosen to hold the glue sections. */ |
2472 | bfd * bfd_of_glue_owner; | |
ba96a88f | 2473 | |
906e58ca NC |
2474 | /* Nonzero to output a BE8 image. */ |
2475 | int byteswap_code; | |
e489d0ae | 2476 | |
906e58ca NC |
2477 | /* Zero if R_ARM_TARGET1 means R_ARM_ABS32. |
2478 | Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */ | |
2479 | int target1_is_rel; | |
9c504268 | 2480 | |
906e58ca NC |
2481 | /* The relocation to use for R_ARM_TARGET2 relocations. */ |
2482 | int target2_reloc; | |
eb043451 | 2483 | |
906e58ca NC |
2484 | /* 0 = Ignore R_ARM_V4BX. |
2485 | 1 = Convert BX to MOV PC. | |
2486 | 2 = Generate v4 interworing stubs. */ | |
2487 | int fix_v4bx; | |
319850b4 | 2488 | |
906e58ca NC |
2489 | /* Nonzero if the ARM/Thumb BLX instructions are available for use. */ |
2490 | int use_blx; | |
33bfe774 | 2491 | |
906e58ca NC |
2492 | /* What sort of code sequences we should look for which may trigger the |
2493 | VFP11 denorm erratum. */ | |
2494 | bfd_arm_vfp11_fix vfp11_fix; | |
c7b8f16e | 2495 | |
906e58ca NC |
2496 | /* Global counter for the number of fixes we have emitted. */ |
2497 | int num_vfp11_fixes; | |
c7b8f16e | 2498 | |
906e58ca NC |
2499 | /* Nonzero to force PIC branch veneers. */ |
2500 | int pic_veneer; | |
27e55c4d | 2501 | |
906e58ca NC |
2502 | /* The number of bytes in the initial entry in the PLT. */ |
2503 | bfd_size_type plt_header_size; | |
e5a52504 | 2504 | |
906e58ca NC |
2505 | /* The number of bytes in the subsequent PLT etries. */ |
2506 | bfd_size_type plt_entry_size; | |
e5a52504 | 2507 | |
906e58ca NC |
2508 | /* True if the target system is VxWorks. */ |
2509 | int vxworks_p; | |
00a97672 | 2510 | |
906e58ca NC |
2511 | /* True if the target system is Symbian OS. */ |
2512 | int symbian_p; | |
e5a52504 | 2513 | |
906e58ca NC |
2514 | /* True if the target uses REL relocations. */ |
2515 | int use_rel; | |
4e7fd91e | 2516 | |
906e58ca NC |
2517 | /* Short-cuts to get to dynamic linker sections. */ |
2518 | asection *sgot; | |
2519 | asection *sgotplt; | |
2520 | asection *srelgot; | |
2521 | asection *splt; | |
2522 | asection *srelplt; | |
2523 | asection *sdynbss; | |
2524 | asection *srelbss; | |
5e681ec4 | 2525 | |
906e58ca NC |
2526 | /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */ |
2527 | asection *srelplt2; | |
00a97672 | 2528 | |
906e58ca NC |
2529 | /* Data for R_ARM_TLS_LDM32 relocations. */ |
2530 | union | |
2531 | { | |
2532 | bfd_signed_vma refcount; | |
2533 | bfd_vma offset; | |
2534 | } tls_ldm_got; | |
b7693d02 | 2535 | |
906e58ca NC |
2536 | /* Small local sym to section mapping cache. */ |
2537 | struct sym_sec_cache sym_sec; | |
2538 | ||
2539 | /* For convenience in allocate_dynrelocs. */ | |
2540 | bfd * obfd; | |
2541 | ||
2542 | /* The stub hash table. */ | |
2543 | struct bfd_hash_table stub_hash_table; | |
2544 | ||
2545 | /* Linker stub bfd. */ | |
2546 | bfd *stub_bfd; | |
2547 | ||
2548 | /* Linker call-backs. */ | |
2549 | asection * (*add_stub_section) (const char *, asection *); | |
2550 | void (*layout_sections_again) (void); | |
2551 | ||
2552 | /* Array to keep track of which stub sections have been created, and | |
2553 | information on stub grouping. */ | |
2554 | struct map_stub | |
2555 | { | |
2556 | /* This is the section to which stubs in the group will be | |
2557 | attached. */ | |
2558 | asection *link_sec; | |
2559 | /* The stub section. */ | |
2560 | asection *stub_sec; | |
2561 | } *stub_group; | |
2562 | ||
2563 | /* Assorted information used by elf32_arm_size_stubs. */ | |
2564 | unsigned int bfd_count; | |
2565 | int top_index; | |
2566 | asection **input_list; | |
2567 | }; | |
252b5132 | 2568 | |
780a67af NC |
2569 | /* Create an entry in an ARM ELF linker hash table. */ |
2570 | ||
2571 | static struct bfd_hash_entry * | |
57e8b36a NC |
2572 | elf32_arm_link_hash_newfunc (struct bfd_hash_entry * entry, |
2573 | struct bfd_hash_table * table, | |
2574 | const char * string) | |
780a67af NC |
2575 | { |
2576 | struct elf32_arm_link_hash_entry * ret = | |
2577 | (struct elf32_arm_link_hash_entry *) entry; | |
2578 | ||
2579 | /* Allocate the structure if it has not already been allocated by a | |
2580 | subclass. */ | |
906e58ca | 2581 | if (ret == NULL) |
57e8b36a NC |
2582 | ret = bfd_hash_allocate (table, sizeof (struct elf32_arm_link_hash_entry)); |
2583 | if (ret == NULL) | |
780a67af NC |
2584 | return (struct bfd_hash_entry *) ret; |
2585 | ||
2586 | /* Call the allocation method of the superclass. */ | |
2587 | ret = ((struct elf32_arm_link_hash_entry *) | |
2588 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
2589 | table, string)); | |
57e8b36a | 2590 | if (ret != NULL) |
b7693d02 DJ |
2591 | { |
2592 | ret->relocs_copied = NULL; | |
ba93b8ac | 2593 | ret->tls_type = GOT_UNKNOWN; |
b7693d02 | 2594 | ret->plt_thumb_refcount = 0; |
bd97cb95 | 2595 | ret->plt_maybe_thumb_refcount = 0; |
b7693d02 | 2596 | ret->plt_got_offset = -1; |
a4fd1a8e | 2597 | ret->export_glue = NULL; |
906e58ca NC |
2598 | |
2599 | ret->stub_cache = NULL; | |
b7693d02 | 2600 | } |
780a67af NC |
2601 | |
2602 | return (struct bfd_hash_entry *) ret; | |
2603 | } | |
2604 | ||
906e58ca NC |
2605 | /* Initialize an entry in the stub hash table. */ |
2606 | ||
2607 | static struct bfd_hash_entry * | |
2608 | stub_hash_newfunc (struct bfd_hash_entry *entry, | |
2609 | struct bfd_hash_table *table, | |
2610 | const char *string) | |
2611 | { | |
2612 | /* Allocate the structure if it has not already been allocated by a | |
2613 | subclass. */ | |
2614 | if (entry == NULL) | |
2615 | { | |
2616 | entry = bfd_hash_allocate (table, | |
2617 | sizeof (struct elf32_arm_stub_hash_entry)); | |
2618 | if (entry == NULL) | |
2619 | return entry; | |
2620 | } | |
2621 | ||
2622 | /* Call the allocation method of the superclass. */ | |
2623 | entry = bfd_hash_newfunc (entry, table, string); | |
2624 | if (entry != NULL) | |
2625 | { | |
2626 | struct elf32_arm_stub_hash_entry *eh; | |
2627 | ||
2628 | /* Initialize the local fields. */ | |
2629 | eh = (struct elf32_arm_stub_hash_entry *) entry; | |
2630 | eh->stub_sec = NULL; | |
2631 | eh->stub_offset = 0; | |
2632 | eh->target_value = 0; | |
2633 | eh->target_section = NULL; | |
2634 | eh->stub_type = arm_stub_none; | |
461a49ca DJ |
2635 | eh->stub_size = 0; |
2636 | eh->stub_template = NULL; | |
2637 | eh->stub_template_size = 0; | |
906e58ca NC |
2638 | eh->h = NULL; |
2639 | eh->id_sec = NULL; | |
2640 | } | |
2641 | ||
2642 | return entry; | |
2643 | } | |
2644 | ||
00a97672 | 2645 | /* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up |
5e681ec4 PB |
2646 | shortcuts to them in our hash table. */ |
2647 | ||
2648 | static bfd_boolean | |
57e8b36a | 2649 | create_got_section (bfd *dynobj, struct bfd_link_info *info) |
5e681ec4 PB |
2650 | { |
2651 | struct elf32_arm_link_hash_table *htab; | |
2652 | ||
e5a52504 MM |
2653 | htab = elf32_arm_hash_table (info); |
2654 | /* BPABI objects never have a GOT, or associated sections. */ | |
2655 | if (htab->symbian_p) | |
2656 | return TRUE; | |
2657 | ||
5e681ec4 PB |
2658 | if (! _bfd_elf_create_got_section (dynobj, info)) |
2659 | return FALSE; | |
2660 | ||
5e681ec4 PB |
2661 | htab->sgot = bfd_get_section_by_name (dynobj, ".got"); |
2662 | htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
2663 | if (!htab->sgot || !htab->sgotplt) | |
2664 | abort (); | |
2665 | ||
00a97672 RS |
2666 | htab->srelgot = bfd_make_section_with_flags (dynobj, |
2667 | RELOC_SECTION (htab, ".got"), | |
3496cb2a L |
2668 | (SEC_ALLOC | SEC_LOAD |
2669 | | SEC_HAS_CONTENTS | |
2670 | | SEC_IN_MEMORY | |
2671 | | SEC_LINKER_CREATED | |
2672 | | SEC_READONLY)); | |
5e681ec4 | 2673 | if (htab->srelgot == NULL |
5e681ec4 PB |
2674 | || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2)) |
2675 | return FALSE; | |
2676 | return TRUE; | |
2677 | } | |
2678 | ||
00a97672 RS |
2679 | /* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and |
2680 | .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our | |
5e681ec4 PB |
2681 | hash table. */ |
2682 | ||
2683 | static bfd_boolean | |
57e8b36a | 2684 | elf32_arm_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5e681ec4 PB |
2685 | { |
2686 | struct elf32_arm_link_hash_table *htab; | |
2687 | ||
2688 | htab = elf32_arm_hash_table (info); | |
2689 | if (!htab->sgot && !create_got_section (dynobj, info)) | |
2690 | return FALSE; | |
2691 | ||
2692 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
2693 | return FALSE; | |
2694 | ||
2695 | htab->splt = bfd_get_section_by_name (dynobj, ".plt"); | |
00a97672 RS |
2696 | htab->srelplt = bfd_get_section_by_name (dynobj, |
2697 | RELOC_SECTION (htab, ".plt")); | |
5e681ec4 PB |
2698 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); |
2699 | if (!info->shared) | |
00a97672 RS |
2700 | htab->srelbss = bfd_get_section_by_name (dynobj, |
2701 | RELOC_SECTION (htab, ".bss")); | |
2702 | ||
2703 | if (htab->vxworks_p) | |
2704 | { | |
2705 | if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2)) | |
2706 | return FALSE; | |
2707 | ||
2708 | if (info->shared) | |
2709 | { | |
2710 | htab->plt_header_size = 0; | |
2711 | htab->plt_entry_size | |
2712 | = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry); | |
2713 | } | |
2714 | else | |
2715 | { | |
2716 | htab->plt_header_size | |
2717 | = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry); | |
2718 | htab->plt_entry_size | |
2719 | = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry); | |
2720 | } | |
2721 | } | |
5e681ec4 | 2722 | |
906e58ca | 2723 | if (!htab->splt |
e5a52504 MM |
2724 | || !htab->srelplt |
2725 | || !htab->sdynbss | |
5e681ec4 PB |
2726 | || (!info->shared && !htab->srelbss)) |
2727 | abort (); | |
2728 | ||
2729 | return TRUE; | |
2730 | } | |
2731 | ||
906e58ca NC |
2732 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
2733 | ||
2734 | static void | |
2735 | elf32_arm_copy_indirect_symbol (struct bfd_link_info *info, | |
2736 | struct elf_link_hash_entry *dir, | |
2737 | struct elf_link_hash_entry *ind) | |
2738 | { | |
2739 | struct elf32_arm_link_hash_entry *edir, *eind; | |
2740 | ||
2741 | edir = (struct elf32_arm_link_hash_entry *) dir; | |
2742 | eind = (struct elf32_arm_link_hash_entry *) ind; | |
2743 | ||
2744 | if (eind->relocs_copied != NULL) | |
2745 | { | |
2746 | if (edir->relocs_copied != NULL) | |
2747 | { | |
2748 | struct elf32_arm_relocs_copied **pp; | |
2749 | struct elf32_arm_relocs_copied *p; | |
2750 | ||
2751 | /* Add reloc counts against the indirect sym to the direct sym | |
2752 | list. Merge any entries against the same section. */ | |
2753 | for (pp = &eind->relocs_copied; (p = *pp) != NULL; ) | |
2754 | { | |
2755 | struct elf32_arm_relocs_copied *q; | |
2756 | ||
2757 | for (q = edir->relocs_copied; q != NULL; q = q->next) | |
2758 | if (q->section == p->section) | |
2759 | { | |
2760 | q->pc_count += p->pc_count; | |
2761 | q->count += p->count; | |
2762 | *pp = p->next; | |
2763 | break; | |
2764 | } | |
2765 | if (q == NULL) | |
2766 | pp = &p->next; | |
2767 | } | |
2768 | *pp = edir->relocs_copied; | |
2769 | } | |
2770 | ||
2771 | edir->relocs_copied = eind->relocs_copied; | |
2772 | eind->relocs_copied = NULL; | |
2773 | } | |
2774 | ||
2775 | if (ind->root.type == bfd_link_hash_indirect) | |
2776 | { | |
2777 | /* Copy over PLT info. */ | |
2778 | edir->plt_thumb_refcount += eind->plt_thumb_refcount; | |
2779 | eind->plt_thumb_refcount = 0; | |
2780 | edir->plt_maybe_thumb_refcount += eind->plt_maybe_thumb_refcount; | |
2781 | eind->plt_maybe_thumb_refcount = 0; | |
2782 | ||
2783 | if (dir->got.refcount <= 0) | |
2784 | { | |
2785 | edir->tls_type = eind->tls_type; | |
2786 | eind->tls_type = GOT_UNKNOWN; | |
2787 | } | |
2788 | } | |
2789 | ||
2790 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
2791 | } | |
2792 | ||
2793 | /* Create an ARM elf linker hash table. */ | |
2794 | ||
2795 | static struct bfd_link_hash_table * | |
2796 | elf32_arm_link_hash_table_create (bfd *abfd) | |
2797 | { | |
2798 | struct elf32_arm_link_hash_table *ret; | |
2799 | bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table); | |
2800 | ||
2801 | ret = bfd_malloc (amt); | |
2802 | if (ret == NULL) | |
2803 | return NULL; | |
2804 | ||
2805 | if (!_bfd_elf_link_hash_table_init (& ret->root, abfd, | |
2806 | elf32_arm_link_hash_newfunc, | |
2807 | sizeof (struct elf32_arm_link_hash_entry))) | |
2808 | { | |
2809 | free (ret); | |
2810 | return NULL; | |
2811 | } | |
2812 | ||
2813 | ret->sgot = NULL; | |
2814 | ret->sgotplt = NULL; | |
2815 | ret->srelgot = NULL; | |
2816 | ret->splt = NULL; | |
2817 | ret->srelplt = NULL; | |
2818 | ret->sdynbss = NULL; | |
2819 | ret->srelbss = NULL; | |
2820 | ret->srelplt2 = NULL; | |
2821 | ret->thumb_glue_size = 0; | |
2822 | ret->arm_glue_size = 0; | |
2823 | ret->bx_glue_size = 0; | |
2824 | memset (ret->bx_glue_offset, 0, sizeof (ret->bx_glue_offset)); | |
2825 | ret->vfp11_fix = BFD_ARM_VFP11_FIX_NONE; | |
2826 | ret->vfp11_erratum_glue_size = 0; | |
2827 | ret->num_vfp11_fixes = 0; | |
2828 | ret->bfd_of_glue_owner = NULL; | |
2829 | ret->byteswap_code = 0; | |
2830 | ret->target1_is_rel = 0; | |
2831 | ret->target2_reloc = R_ARM_NONE; | |
2832 | #ifdef FOUR_WORD_PLT | |
2833 | ret->plt_header_size = 16; | |
2834 | ret->plt_entry_size = 16; | |
2835 | #else | |
2836 | ret->plt_header_size = 20; | |
2837 | ret->plt_entry_size = 12; | |
2838 | #endif | |
2839 | ret->fix_v4bx = 0; | |
2840 | ret->use_blx = 0; | |
2841 | ret->vxworks_p = 0; | |
2842 | ret->symbian_p = 0; | |
2843 | ret->use_rel = 1; | |
2844 | ret->sym_sec.abfd = NULL; | |
2845 | ret->obfd = abfd; | |
2846 | ret->tls_ldm_got.refcount = 0; | |
6cee0a6f L |
2847 | ret->stub_bfd = NULL; |
2848 | ret->add_stub_section = NULL; | |
2849 | ret->layout_sections_again = NULL; | |
2850 | ret->stub_group = NULL; | |
2851 | ret->bfd_count = 0; | |
2852 | ret->top_index = 0; | |
2853 | ret->input_list = NULL; | |
906e58ca NC |
2854 | |
2855 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc, | |
2856 | sizeof (struct elf32_arm_stub_hash_entry))) | |
2857 | { | |
2858 | free (ret); | |
2859 | return NULL; | |
2860 | } | |
2861 | ||
2862 | return &ret->root.root; | |
2863 | } | |
2864 | ||
2865 | /* Free the derived linker hash table. */ | |
2866 | ||
2867 | static void | |
2868 | elf32_arm_hash_table_free (struct bfd_link_hash_table *hash) | |
2869 | { | |
2870 | struct elf32_arm_link_hash_table *ret | |
2871 | = (struct elf32_arm_link_hash_table *) hash; | |
2872 | ||
2873 | bfd_hash_table_free (&ret->stub_hash_table); | |
2874 | _bfd_generic_link_hash_table_free (hash); | |
2875 | } | |
2876 | ||
2877 | /* Determine if we're dealing with a Thumb only architecture. */ | |
2878 | ||
2879 | static bfd_boolean | |
2880 | using_thumb_only (struct elf32_arm_link_hash_table *globals) | |
2881 | { | |
2882 | int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, | |
2883 | Tag_CPU_arch); | |
2884 | int profile; | |
2885 | ||
2886 | if (arch != TAG_CPU_ARCH_V7) | |
2887 | return FALSE; | |
2888 | ||
2889 | profile = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, | |
2890 | Tag_CPU_arch_profile); | |
2891 | ||
2892 | return profile == 'M'; | |
2893 | } | |
2894 | ||
2895 | /* Determine if we're dealing with a Thumb-2 object. */ | |
2896 | ||
2897 | static bfd_boolean | |
2898 | using_thumb2 (struct elf32_arm_link_hash_table *globals) | |
2899 | { | |
2900 | int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, | |
2901 | Tag_CPU_arch); | |
2902 | return arch == TAG_CPU_ARCH_V6T2 || arch >= TAG_CPU_ARCH_V7; | |
2903 | } | |
2904 | ||
f4ac8484 DJ |
2905 | static bfd_boolean |
2906 | arm_stub_is_thumb (enum elf32_arm_stub_type stub_type) | |
2907 | { | |
2908 | switch (stub_type) | |
2909 | { | |
fea2b4d6 CL |
2910 | case arm_stub_long_branch_thumb_only: |
2911 | case arm_stub_long_branch_v4t_thumb_arm: | |
2912 | case arm_stub_short_branch_v4t_thumb_arm: | |
ebe24dd4 CL |
2913 | case arm_stub_long_branch_v4t_thumb_arm_pic: |
2914 | case arm_stub_long_branch_thumb_only_pic: | |
f4ac8484 DJ |
2915 | return TRUE; |
2916 | case arm_stub_none: | |
2917 | BFD_FAIL (); | |
2918 | return FALSE; | |
2919 | break; | |
2920 | default: | |
2921 | return FALSE; | |
2922 | } | |
2923 | } | |
2924 | ||
906e58ca NC |
2925 | /* Determine the type of stub needed, if any, for a call. */ |
2926 | ||
2927 | static enum elf32_arm_stub_type | |
2928 | arm_type_of_stub (struct bfd_link_info *info, | |
2929 | asection *input_sec, | |
2930 | const Elf_Internal_Rela *rel, | |
2931 | unsigned char st_type, | |
2932 | struct elf32_arm_link_hash_entry *hash, | |
c820be07 NC |
2933 | bfd_vma destination, |
2934 | asection *sym_sec, | |
2935 | bfd *input_bfd, | |
2936 | const char *name) | |
906e58ca NC |
2937 | { |
2938 | bfd_vma location; | |
2939 | bfd_signed_vma branch_offset; | |
2940 | unsigned int r_type; | |
2941 | struct elf32_arm_link_hash_table * globals; | |
2942 | int thumb2; | |
2943 | int thumb_only; | |
2944 | enum elf32_arm_stub_type stub_type = arm_stub_none; | |
5fa9e92f | 2945 | int use_plt = 0; |
906e58ca | 2946 | |
da5938a2 | 2947 | /* We don't know the actual type of destination in case it is of |
8029a119 | 2948 | type STT_SECTION: give up. */ |
da5938a2 NC |
2949 | if (st_type == STT_SECTION) |
2950 | return stub_type; | |
2951 | ||
906e58ca NC |
2952 | globals = elf32_arm_hash_table (info); |
2953 | ||
2954 | thumb_only = using_thumb_only (globals); | |
2955 | ||
2956 | thumb2 = using_thumb2 (globals); | |
2957 | ||
2958 | /* Determine where the call point is. */ | |
2959 | location = (input_sec->output_offset | |
2960 | + input_sec->output_section->vma | |
2961 | + rel->r_offset); | |
2962 | ||
2963 | branch_offset = (bfd_signed_vma)(destination - location); | |
2964 | ||
2965 | r_type = ELF32_R_TYPE (rel->r_info); | |
2966 | ||
5fa9e92f | 2967 | /* Keep a simpler condition, for the sake of clarity. */ |
329dcd78 | 2968 | if (globals->splt != NULL && hash != NULL && hash->root.plt.offset != (bfd_vma) -1) |
5fa9e92f CL |
2969 | { |
2970 | use_plt = 1; | |
2971 | /* Note when dealing with PLT entries: the main PLT stub is in | |
2972 | ARM mode, so if the branch is in Thumb mode, another | |
2973 | Thumb->ARM stub will be inserted later just before the ARM | |
2974 | PLT stub. We don't take this extra distance into account | |
2975 | here, because if a long branch stub is needed, we'll add a | |
2976 | Thumb->Arm one and branch directly to the ARM PLT entry | |
2977 | because it avoids spreading offset corrections in several | |
2978 | places. */ | |
2979 | } | |
906e58ca | 2980 | |
155d87d7 | 2981 | if (r_type == R_ARM_THM_CALL || r_type == R_ARM_THM_JUMP24) |
906e58ca | 2982 | { |
5fa9e92f CL |
2983 | /* Handle cases where: |
2984 | - this call goes too far (different Thumb/Thumb2 max | |
2985 | distance) | |
155d87d7 CL |
2986 | - it's a Thumb->Arm call and blx is not available, or it's a |
2987 | Thumb->Arm branch (not bl). A stub is needed in this case, | |
2988 | but only if this call is not through a PLT entry. Indeed, | |
2989 | PLT stubs handle mode switching already. | |
5fa9e92f | 2990 | */ |
906e58ca NC |
2991 | if ((!thumb2 |
2992 | && (branch_offset > THM_MAX_FWD_BRANCH_OFFSET | |
2993 | || (branch_offset < THM_MAX_BWD_BRANCH_OFFSET))) | |
2994 | || (thumb2 | |
2995 | && (branch_offset > THM2_MAX_FWD_BRANCH_OFFSET | |
2996 | || (branch_offset < THM2_MAX_BWD_BRANCH_OFFSET))) | |
5fa9e92f | 2997 | || ((st_type != STT_ARM_TFUNC) |
155d87d7 CL |
2998 | && (((r_type == R_ARM_THM_CALL) && !globals->use_blx) |
2999 | || (r_type == R_ARM_THM_JUMP24)) | |
5fa9e92f | 3000 | && !use_plt)) |
906e58ca NC |
3001 | { |
3002 | if (st_type == STT_ARM_TFUNC) | |
3003 | { | |
3004 | /* Thumb to thumb. */ | |
3005 | if (!thumb_only) | |
3006 | { | |
3007 | stub_type = (info->shared | globals->pic_veneer) | |
c2b4a39d | 3008 | /* PIC stubs. */ |
155d87d7 CL |
3009 | ? ((globals->use_blx |
3010 | && (r_type ==R_ARM_THM_CALL)) | |
3011 | /* V5T and above. Stub starts with ARM code, so | |
3012 | we must be able to switch mode before | |
3013 | reaching it, which is only possible for 'bl' | |
3014 | (ie R_ARM_THM_CALL relocation). */ | |
cf3eccff | 3015 | ? arm_stub_long_branch_any_thumb_pic |
ebe24dd4 | 3016 | /* On V4T, use Thumb code only. */ |
d3626fb0 | 3017 | : arm_stub_long_branch_v4t_thumb_thumb_pic) |
c2b4a39d CL |
3018 | |
3019 | /* non-PIC stubs. */ | |
155d87d7 CL |
3020 | : ((globals->use_blx |
3021 | && (r_type ==R_ARM_THM_CALL)) | |
c2b4a39d CL |
3022 | /* V5T and above. */ |
3023 | ? arm_stub_long_branch_any_any | |
3024 | /* V4T. */ | |
d3626fb0 | 3025 | : arm_stub_long_branch_v4t_thumb_thumb); |
906e58ca NC |
3026 | } |
3027 | else | |
3028 | { | |
3029 | stub_type = (info->shared | globals->pic_veneer) | |
ebe24dd4 CL |
3030 | /* PIC stub. */ |
3031 | ? arm_stub_long_branch_thumb_only_pic | |
c2b4a39d CL |
3032 | /* non-PIC stub. */ |
3033 | : arm_stub_long_branch_thumb_only; | |
906e58ca NC |
3034 | } |
3035 | } | |
3036 | else | |
3037 | { | |
3038 | /* Thumb to arm. */ | |
c820be07 NC |
3039 | if (sym_sec != NULL |
3040 | && sym_sec->owner != NULL | |
3041 | && !INTERWORK_FLAG (sym_sec->owner)) | |
3042 | { | |
3043 | (*_bfd_error_handler) | |
3044 | (_("%B(%s): warning: interworking not enabled.\n" | |
3045 | " first occurrence: %B: Thumb call to ARM"), | |
3046 | sym_sec->owner, input_bfd, name); | |
3047 | } | |
3048 | ||
906e58ca | 3049 | stub_type = (info->shared | globals->pic_veneer) |
c2b4a39d | 3050 | /* PIC stubs. */ |
155d87d7 CL |
3051 | ? ((globals->use_blx |
3052 | && (r_type ==R_ARM_THM_CALL)) | |
c2b4a39d | 3053 | /* V5T and above. */ |
cf3eccff | 3054 | ? arm_stub_long_branch_any_arm_pic |
ebe24dd4 CL |
3055 | /* V4T PIC stub. */ |
3056 | : arm_stub_long_branch_v4t_thumb_arm_pic) | |
c2b4a39d CL |
3057 | |
3058 | /* non-PIC stubs. */ | |
155d87d7 CL |
3059 | : ((globals->use_blx |
3060 | && (r_type ==R_ARM_THM_CALL)) | |
c2b4a39d CL |
3061 | /* V5T and above. */ |
3062 | ? arm_stub_long_branch_any_any | |
3063 | /* V4T. */ | |
3064 | : arm_stub_long_branch_v4t_thumb_arm); | |
c820be07 NC |
3065 | |
3066 | /* Handle v4t short branches. */ | |
fea2b4d6 | 3067 | if ((stub_type == arm_stub_long_branch_v4t_thumb_arm) |
c820be07 NC |
3068 | && (branch_offset <= THM_MAX_FWD_BRANCH_OFFSET) |
3069 | && (branch_offset >= THM_MAX_BWD_BRANCH_OFFSET)) | |
fea2b4d6 | 3070 | stub_type = arm_stub_short_branch_v4t_thumb_arm; |
906e58ca NC |
3071 | } |
3072 | } | |
3073 | } | |
155d87d7 | 3074 | else if (r_type == R_ARM_CALL || r_type == R_ARM_JUMP24 || r_type == R_ARM_PLT32) |
906e58ca NC |
3075 | { |
3076 | if (st_type == STT_ARM_TFUNC) | |
3077 | { | |
3078 | /* Arm to thumb. */ | |
c820be07 NC |
3079 | |
3080 | if (sym_sec != NULL | |
3081 | && sym_sec->owner != NULL | |
3082 | && !INTERWORK_FLAG (sym_sec->owner)) | |
3083 | { | |
3084 | (*_bfd_error_handler) | |
3085 | (_("%B(%s): warning: interworking not enabled.\n" | |
c2b4a39d | 3086 | " first occurrence: %B: ARM call to Thumb"), |
c820be07 NC |
3087 | sym_sec->owner, input_bfd, name); |
3088 | } | |
3089 | ||
3090 | /* We have an extra 2-bytes reach because of | |
3091 | the mode change (bit 24 (H) of BLX encoding). */ | |
906e58ca NC |
3092 | if (branch_offset > (ARM_MAX_FWD_BRANCH_OFFSET + 2) |
3093 | || (branch_offset < ARM_MAX_BWD_BRANCH_OFFSET) | |
155d87d7 CL |
3094 | || ((r_type == R_ARM_CALL) && !globals->use_blx) |
3095 | || (r_type == R_ARM_JUMP24) | |
3096 | || (r_type == R_ARM_PLT32)) | |
906e58ca NC |
3097 | { |
3098 | stub_type = (info->shared | globals->pic_veneer) | |
c2b4a39d | 3099 | /* PIC stubs. */ |
ebe24dd4 CL |
3100 | ? ((globals->use_blx) |
3101 | /* V5T and above. */ | |
3102 | ? arm_stub_long_branch_any_thumb_pic | |
3103 | /* V4T stub. */ | |
3104 | : arm_stub_long_branch_v4t_arm_thumb_pic) | |
3105 | ||
c2b4a39d CL |
3106 | /* non-PIC stubs. */ |
3107 | : ((globals->use_blx) | |
3108 | /* V5T and above. */ | |
3109 | ? arm_stub_long_branch_any_any | |
3110 | /* V4T. */ | |
3111 | : arm_stub_long_branch_v4t_arm_thumb); | |
906e58ca NC |
3112 | } |
3113 | } | |
3114 | else | |
3115 | { | |
3116 | /* Arm to arm. */ | |
3117 | if (branch_offset > ARM_MAX_FWD_BRANCH_OFFSET | |
3118 | || (branch_offset < ARM_MAX_BWD_BRANCH_OFFSET)) | |
3119 | { | |
3120 | stub_type = (info->shared | globals->pic_veneer) | |
c2b4a39d | 3121 | /* PIC stubs. */ |
cf3eccff | 3122 | ? arm_stub_long_branch_any_arm_pic |
c2b4a39d | 3123 | /* non-PIC stubs. */ |
fea2b4d6 | 3124 | : arm_stub_long_branch_any_any; |
906e58ca NC |
3125 | } |
3126 | } | |
3127 | } | |
3128 | ||
3129 | return stub_type; | |
3130 | } | |
3131 | ||
3132 | /* Build a name for an entry in the stub hash table. */ | |
3133 | ||
3134 | static char * | |
3135 | elf32_arm_stub_name (const asection *input_section, | |
3136 | const asection *sym_sec, | |
3137 | const struct elf32_arm_link_hash_entry *hash, | |
3138 | const Elf_Internal_Rela *rel) | |
3139 | { | |
3140 | char *stub_name; | |
3141 | bfd_size_type len; | |
3142 | ||
3143 | if (hash) | |
3144 | { | |
3145 | len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 8 + 1; | |
3146 | stub_name = bfd_malloc (len); | |
3147 | if (stub_name != NULL) | |
3148 | sprintf (stub_name, "%08x_%s+%x", | |
3149 | input_section->id & 0xffffffff, | |
3150 | hash->root.root.root.string, | |
3151 | (int) rel->r_addend & 0xffffffff); | |
3152 | } | |
3153 | else | |
3154 | { | |
3155 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; | |
3156 | stub_name = bfd_malloc (len); | |
3157 | if (stub_name != NULL) | |
3158 | sprintf (stub_name, "%08x_%x:%x+%x", | |
3159 | input_section->id & 0xffffffff, | |
3160 | sym_sec->id & 0xffffffff, | |
3161 | (int) ELF32_R_SYM (rel->r_info) & 0xffffffff, | |
3162 | (int) rel->r_addend & 0xffffffff); | |
3163 | } | |
3164 | ||
3165 | return stub_name; | |
3166 | } | |
3167 | ||
3168 | /* Look up an entry in the stub hash. Stub entries are cached because | |
3169 | creating the stub name takes a bit of time. */ | |
3170 | ||
3171 | static struct elf32_arm_stub_hash_entry * | |
3172 | elf32_arm_get_stub_entry (const asection *input_section, | |
3173 | const asection *sym_sec, | |
3174 | struct elf_link_hash_entry *hash, | |
3175 | const Elf_Internal_Rela *rel, | |
3176 | struct elf32_arm_link_hash_table *htab) | |
3177 | { | |
3178 | struct elf32_arm_stub_hash_entry *stub_entry; | |
3179 | struct elf32_arm_link_hash_entry *h = (struct elf32_arm_link_hash_entry *) hash; | |
3180 | const asection *id_sec; | |
3181 | ||
3182 | if ((input_section->flags & SEC_CODE) == 0) | |
3183 | return NULL; | |
3184 | ||
3185 | /* If this input section is part of a group of sections sharing one | |
3186 | stub section, then use the id of the first section in the group. | |
3187 | Stub names need to include a section id, as there may well be | |
3188 | more than one stub used to reach say, printf, and we need to | |
3189 | distinguish between them. */ | |
3190 | id_sec = htab->stub_group[input_section->id].link_sec; | |
3191 | ||
3192 | if (h != NULL && h->stub_cache != NULL | |
3193 | && h->stub_cache->h == h | |
3194 | && h->stub_cache->id_sec == id_sec) | |
3195 | { | |
3196 | stub_entry = h->stub_cache; | |
3197 | } | |
3198 | else | |
3199 | { | |
3200 | char *stub_name; | |
3201 | ||
3202 | stub_name = elf32_arm_stub_name (id_sec, sym_sec, h, rel); | |
3203 | if (stub_name == NULL) | |
3204 | return NULL; | |
3205 | ||
3206 | stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, | |
3207 | stub_name, FALSE, FALSE); | |
3208 | if (h != NULL) | |
3209 | h->stub_cache = stub_entry; | |
3210 | ||
3211 | free (stub_name); | |
3212 | } | |
3213 | ||
3214 | return stub_entry; | |
3215 | } | |
3216 | ||
906e58ca NC |
3217 | /* Add a new stub entry to the stub hash. Not all fields of the new |
3218 | stub entry are initialised. */ | |
3219 | ||
3220 | static struct elf32_arm_stub_hash_entry * | |
3221 | elf32_arm_add_stub (const char *stub_name, | |
3222 | asection *section, | |
da5938a2 | 3223 | struct elf32_arm_link_hash_table *htab) |
906e58ca NC |
3224 | { |
3225 | asection *link_sec; | |
3226 | asection *stub_sec; | |
3227 | struct elf32_arm_stub_hash_entry *stub_entry; | |
3228 | ||
3229 | link_sec = htab->stub_group[section->id].link_sec; | |
3230 | stub_sec = htab->stub_group[section->id].stub_sec; | |
3231 | if (stub_sec == NULL) | |
3232 | { | |
3233 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
3234 | if (stub_sec == NULL) | |
3235 | { | |
3236 | size_t namelen; | |
3237 | bfd_size_type len; | |
3238 | char *s_name; | |
3239 | ||
3240 | namelen = strlen (link_sec->name); | |
3241 | len = namelen + sizeof (STUB_SUFFIX); | |
3242 | s_name = bfd_alloc (htab->stub_bfd, len); | |
3243 | if (s_name == NULL) | |
3244 | return NULL; | |
3245 | ||
3246 | memcpy (s_name, link_sec->name, namelen); | |
3247 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
3248 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); | |
3249 | if (stub_sec == NULL) | |
3250 | return NULL; | |
3251 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
3252 | } | |
3253 | htab->stub_group[section->id].stub_sec = stub_sec; | |
3254 | } | |
3255 | ||
3256 | /* Enter this entry into the linker stub hash table. */ | |
3257 | stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
3258 | TRUE, FALSE); | |
3259 | if (stub_entry == NULL) | |
3260 | { | |
3261 | (*_bfd_error_handler) (_("%s: cannot create stub entry %s"), | |
3262 | section->owner, | |
3263 | stub_name); | |
3264 | return NULL; | |
3265 | } | |
3266 | ||
3267 | stub_entry->stub_sec = stub_sec; | |
3268 | stub_entry->stub_offset = 0; | |
3269 | stub_entry->id_sec = link_sec; | |
3270 | ||
906e58ca NC |
3271 | return stub_entry; |
3272 | } | |
3273 | ||
3274 | /* Store an Arm insn into an output section not processed by | |
3275 | elf32_arm_write_section. */ | |
3276 | ||
3277 | static void | |
8029a119 NC |
3278 | put_arm_insn (struct elf32_arm_link_hash_table * htab, |
3279 | bfd * output_bfd, bfd_vma val, void * ptr) | |
906e58ca NC |
3280 | { |
3281 | if (htab->byteswap_code != bfd_little_endian (output_bfd)) | |
3282 | bfd_putl32 (val, ptr); | |
3283 | else | |
3284 | bfd_putb32 (val, ptr); | |
3285 | } | |
3286 | ||
3287 | /* Store a 16-bit Thumb insn into an output section not processed by | |
3288 | elf32_arm_write_section. */ | |
3289 | ||
3290 | static void | |
8029a119 NC |
3291 | put_thumb_insn (struct elf32_arm_link_hash_table * htab, |
3292 | bfd * output_bfd, bfd_vma val, void * ptr) | |
906e58ca NC |
3293 | { |
3294 | if (htab->byteswap_code != bfd_little_endian (output_bfd)) | |
3295 | bfd_putl16 (val, ptr); | |
3296 | else | |
3297 | bfd_putb16 (val, ptr); | |
3298 | } | |
3299 | ||
3300 | static bfd_boolean | |
3301 | arm_build_one_stub (struct bfd_hash_entry *gen_entry, | |
3302 | void * in_arg) | |
3303 | { | |
3304 | struct elf32_arm_stub_hash_entry *stub_entry; | |
3305 | struct bfd_link_info *info; | |
3306 | struct elf32_arm_link_hash_table *htab; | |
3307 | asection *stub_sec; | |
3308 | bfd *stub_bfd; | |
3309 | bfd_vma stub_addr; | |
3310 | bfd_byte *loc; | |
3311 | bfd_vma sym_value; | |
3312 | int template_size; | |
3313 | int size; | |
461a49ca | 3314 | const insn_sequence *template; |
906e58ca NC |
3315 | int i; |
3316 | struct elf32_arm_link_hash_table * globals; | |
461a49ca | 3317 | int stub_reloc_idx = -1; |
4e31c731 | 3318 | int stub_reloc_offset = 0; |
906e58ca NC |
3319 | |
3320 | /* Massage our args to the form they really have. */ | |
3321 | stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry; | |
3322 | info = (struct bfd_link_info *) in_arg; | |
3323 | ||
3324 | globals = elf32_arm_hash_table (info); | |
3325 | ||
3326 | htab = elf32_arm_hash_table (info); | |
3327 | stub_sec = stub_entry->stub_sec; | |
3328 | ||
3329 | /* Make a note of the offset within the stubs for this entry. */ | |
3330 | stub_entry->stub_offset = stub_sec->size; | |
3331 | loc = stub_sec->contents + stub_entry->stub_offset; | |
3332 | ||
3333 | stub_bfd = stub_sec->owner; | |
3334 | ||
3335 | /* This is the address of the start of the stub. */ | |
3336 | stub_addr = stub_sec->output_section->vma + stub_sec->output_offset | |
3337 | + stub_entry->stub_offset; | |
3338 | ||
3339 | /* This is the address of the stub destination. */ | |
3340 | sym_value = (stub_entry->target_value | |
3341 | + stub_entry->target_section->output_offset | |
3342 | + stub_entry->target_section->output_section->vma); | |
3343 | ||
461a49ca DJ |
3344 | template = stub_entry->stub_template; |
3345 | template_size = stub_entry->stub_template_size; | |
906e58ca NC |
3346 | |
3347 | size = 0; | |
461a49ca | 3348 | for (i = 0; i < template_size; i++) |
906e58ca | 3349 | { |
4e31c731 | 3350 | switch (template[i].type) |
461a49ca DJ |
3351 | { |
3352 | case THUMB16_TYPE: | |
3353 | put_thumb_insn (globals, stub_bfd, template[i].data, loc + size); | |
3354 | size += 2; | |
3355 | break; | |
906e58ca | 3356 | |
461a49ca DJ |
3357 | case ARM_TYPE: |
3358 | put_arm_insn (globals, stub_bfd, template[i].data, loc + size); | |
3359 | /* Handle cases where the target is encoded within the | |
3360 | instruction. */ | |
ebe24dd4 | 3361 | if (template[i].r_type == R_ARM_JUMP24) |
461a49ca DJ |
3362 | { |
3363 | stub_reloc_idx = i; | |
3364 | stub_reloc_offset = size; | |
3365 | } | |
3366 | size += 4; | |
3367 | break; | |
3368 | ||
3369 | case DATA_TYPE: | |
3370 | bfd_put_32 (stub_bfd, template[i].data, loc + size); | |
3371 | stub_reloc_idx = i; | |
3372 | stub_reloc_offset = size; | |
3373 | size += 4; | |
3374 | break; | |
3375 | ||
3376 | default: | |
3377 | BFD_FAIL (); | |
3378 | return FALSE; | |
3379 | } | |
906e58ca | 3380 | } |
461a49ca | 3381 | |
906e58ca NC |
3382 | stub_sec->size += size; |
3383 | ||
461a49ca DJ |
3384 | /* Stub size has already been computed in arm_size_one_stub. Check |
3385 | consistency. */ | |
3386 | BFD_ASSERT (size == stub_entry->stub_size); | |
3387 | ||
906e58ca NC |
3388 | /* Destination is Thumb. Force bit 0 to 1 to reflect this. */ |
3389 | if (stub_entry->st_type == STT_ARM_TFUNC) | |
3390 | sym_value |= 1; | |
3391 | ||
461a49ca DJ |
3392 | /* Assume there is one and only one entry to relocate in each stub. */ |
3393 | BFD_ASSERT (stub_reloc_idx != -1); | |
c820be07 | 3394 | |
ebe24dd4 | 3395 | _bfd_final_link_relocate (elf32_arm_howto_from_type (template[stub_reloc_idx].r_type), |
461a49ca DJ |
3396 | stub_bfd, stub_sec, stub_sec->contents, |
3397 | stub_entry->stub_offset + stub_reloc_offset, | |
3398 | sym_value, template[stub_reloc_idx].reloc_addend); | |
906e58ca NC |
3399 | |
3400 | return TRUE; | |
3401 | } | |
3402 | ||
3403 | /* As above, but don't actually build the stub. Just bump offset so | |
3404 | we know stub section sizes. */ | |
3405 | ||
3406 | static bfd_boolean | |
3407 | arm_size_one_stub (struct bfd_hash_entry *gen_entry, | |
3408 | void * in_arg) | |
3409 | { | |
3410 | struct elf32_arm_stub_hash_entry *stub_entry; | |
3411 | struct elf32_arm_link_hash_table *htab; | |
461a49ca | 3412 | const insn_sequence *template; |
906e58ca NC |
3413 | int template_size; |
3414 | int size; | |
3415 | int i; | |
3416 | ||
3417 | /* Massage our args to the form they really have. */ | |
3418 | stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry; | |
3419 | htab = (struct elf32_arm_link_hash_table *) in_arg; | |
3420 | ||
738a79f6 CL |
3421 | BFD_ASSERT((stub_entry->stub_type > arm_stub_none) |
3422 | && stub_entry->stub_type < ARRAY_SIZE(stub_definitions)); | |
3423 | ||
3424 | template = stub_definitions[stub_entry->stub_type].template; | |
3425 | template_size = stub_definitions[stub_entry->stub_type].template_size; | |
906e58ca NC |
3426 | |
3427 | size = 0; | |
461a49ca DJ |
3428 | for (i = 0; i < template_size; i++) |
3429 | { | |
4e31c731 | 3430 | switch (template[i].type) |
461a49ca DJ |
3431 | { |
3432 | case THUMB16_TYPE: | |
3433 | size += 2; | |
3434 | break; | |
3435 | ||
3436 | case ARM_TYPE: | |
3437 | size += 4; | |
3438 | break; | |
3439 | ||
3440 | case DATA_TYPE: | |
3441 | size += 4; | |
3442 | break; | |
3443 | ||
3444 | default: | |
3445 | BFD_FAIL (); | |
3446 | return FALSE; | |
3447 | } | |
3448 | } | |
3449 | ||
3450 | stub_entry->stub_size = size; | |
3451 | stub_entry->stub_template = template; | |
3452 | stub_entry->stub_template_size = template_size; | |
3453 | ||
906e58ca NC |
3454 | size = (size + 7) & ~7; |
3455 | stub_entry->stub_sec->size += size; | |
461a49ca | 3456 | |
906e58ca NC |
3457 | return TRUE; |
3458 | } | |
3459 | ||
3460 | /* External entry points for sizing and building linker stubs. */ | |
3461 | ||
3462 | /* Set up various things so that we can make a list of input sections | |
3463 | for each output section included in the link. Returns -1 on error, | |
3464 | 0 when no stubs will be needed, and 1 on success. */ | |
3465 | ||
3466 | int | |
3467 | elf32_arm_setup_section_lists (bfd *output_bfd, | |
3468 | struct bfd_link_info *info) | |
3469 | { | |
3470 | bfd *input_bfd; | |
3471 | unsigned int bfd_count; | |
3472 | int top_id, top_index; | |
3473 | asection *section; | |
3474 | asection **input_list, **list; | |
3475 | bfd_size_type amt; | |
3476 | struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info); | |
3477 | ||
3478 | if (! is_elf_hash_table (htab)) | |
3479 | return 0; | |
3480 | ||
3481 | /* Count the number of input BFDs and find the top input section id. */ | |
3482 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; | |
3483 | input_bfd != NULL; | |
3484 | input_bfd = input_bfd->link_next) | |
3485 | { | |
3486 | bfd_count += 1; | |
3487 | for (section = input_bfd->sections; | |
3488 | section != NULL; | |
3489 | section = section->next) | |
3490 | { | |
3491 | if (top_id < section->id) | |
3492 | top_id = section->id; | |
3493 | } | |
3494 | } | |
3495 | htab->bfd_count = bfd_count; | |
3496 | ||
3497 | amt = sizeof (struct map_stub) * (top_id + 1); | |
3498 | htab->stub_group = bfd_zmalloc (amt); | |
3499 | if (htab->stub_group == NULL) | |
3500 | return -1; | |
3501 | ||
3502 | /* We can't use output_bfd->section_count here to find the top output | |
3503 | section index as some sections may have been removed, and | |
3504 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
3505 | for (section = output_bfd->sections, top_index = 0; | |
3506 | section != NULL; | |
3507 | section = section->next) | |
3508 | { | |
3509 | if (top_index < section->index) | |
3510 | top_index = section->index; | |
3511 | } | |
3512 | ||
3513 | htab->top_index = top_index; | |
3514 | amt = sizeof (asection *) * (top_index + 1); | |
3515 | input_list = bfd_malloc (amt); | |
3516 | htab->input_list = input_list; | |
3517 | if (input_list == NULL) | |
3518 | return -1; | |
3519 | ||
3520 | /* For sections we aren't interested in, mark their entries with a | |
3521 | value we can check later. */ | |
3522 | list = input_list + top_index; | |
3523 | do | |
3524 | *list = bfd_abs_section_ptr; | |
3525 | while (list-- != input_list); | |
3526 | ||
3527 | for (section = output_bfd->sections; | |
3528 | section != NULL; | |
3529 | section = section->next) | |
3530 | { | |
3531 | if ((section->flags & SEC_CODE) != 0) | |
3532 | input_list[section->index] = NULL; | |
3533 | } | |
3534 | ||
3535 | return 1; | |
3536 | } | |
3537 | ||
3538 | /* The linker repeatedly calls this function for each input section, | |
3539 | in the order that input sections are linked into output sections. | |
3540 | Build lists of input sections to determine groupings between which | |
3541 | we may insert linker stubs. */ | |
3542 | ||
3543 | void | |
3544 | elf32_arm_next_input_section (struct bfd_link_info *info, | |
3545 | asection *isec) | |
3546 | { | |
3547 | struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info); | |
3548 | ||
3549 | if (isec->output_section->index <= htab->top_index) | |
3550 | { | |
3551 | asection **list = htab->input_list + isec->output_section->index; | |
3552 | ||
3553 | if (*list != bfd_abs_section_ptr) | |
3554 | { | |
3555 | /* Steal the link_sec pointer for our list. */ | |
3556 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) | |
3557 | /* This happens to make the list in reverse order, | |
07d72278 | 3558 | which we reverse later. */ |
906e58ca NC |
3559 | PREV_SEC (isec) = *list; |
3560 | *list = isec; | |
3561 | } | |
3562 | } | |
3563 | } | |
3564 | ||
3565 | /* See whether we can group stub sections together. Grouping stub | |
3566 | sections may result in fewer stubs. More importantly, we need to | |
07d72278 | 3567 | put all .init* and .fini* stubs at the end of the .init or |
906e58ca NC |
3568 | .fini output sections respectively, because glibc splits the |
3569 | _init and _fini functions into multiple parts. Putting a stub in | |
3570 | the middle of a function is not a good idea. */ | |
3571 | ||
3572 | static void | |
3573 | group_sections (struct elf32_arm_link_hash_table *htab, | |
3574 | bfd_size_type stub_group_size, | |
07d72278 | 3575 | bfd_boolean stubs_always_after_branch) |
906e58ca | 3576 | { |
07d72278 | 3577 | asection **list = htab->input_list; |
906e58ca NC |
3578 | |
3579 | do | |
3580 | { | |
3581 | asection *tail = *list; | |
07d72278 | 3582 | asection *head; |
906e58ca NC |
3583 | |
3584 | if (tail == bfd_abs_section_ptr) | |
3585 | continue; | |
3586 | ||
07d72278 DJ |
3587 | /* Reverse the list: we must avoid placing stubs at the |
3588 | beginning of the section because the beginning of the text | |
3589 | section may be required for an interrupt vector in bare metal | |
3590 | code. */ | |
3591 | #define NEXT_SEC PREV_SEC | |
e780aef2 CL |
3592 | head = NULL; |
3593 | while (tail != NULL) | |
3594 | { | |
3595 | /* Pop from tail. */ | |
3596 | asection *item = tail; | |
3597 | tail = PREV_SEC (item); | |
3598 | ||
3599 | /* Push on head. */ | |
3600 | NEXT_SEC (item) = head; | |
3601 | head = item; | |
3602 | } | |
07d72278 DJ |
3603 | |
3604 | while (head != NULL) | |
906e58ca NC |
3605 | { |
3606 | asection *curr; | |
07d72278 | 3607 | asection *next; |
e780aef2 CL |
3608 | bfd_vma stub_group_start = head->output_offset; |
3609 | bfd_vma end_of_next; | |
906e58ca | 3610 | |
07d72278 | 3611 | curr = head; |
e780aef2 | 3612 | while (NEXT_SEC (curr) != NULL) |
8cd931b7 | 3613 | { |
e780aef2 CL |
3614 | next = NEXT_SEC (curr); |
3615 | end_of_next = next->output_offset + next->size; | |
3616 | if (end_of_next - stub_group_start >= stub_group_size) | |
3617 | /* End of NEXT is too far from start, so stop. */ | |
8cd931b7 | 3618 | break; |
e780aef2 CL |
3619 | /* Add NEXT to the group. */ |
3620 | curr = next; | |
8cd931b7 | 3621 | } |
906e58ca | 3622 | |
07d72278 | 3623 | /* OK, the size from the start to the start of CURR is less |
906e58ca | 3624 | than stub_group_size and thus can be handled by one stub |
07d72278 | 3625 | section. (Or the head section is itself larger than |
906e58ca NC |
3626 | stub_group_size, in which case we may be toast.) |
3627 | We should really be keeping track of the total size of | |
3628 | stubs added here, as stubs contribute to the final output | |
7fb9f789 | 3629 | section size. */ |
906e58ca NC |
3630 | do |
3631 | { | |
07d72278 | 3632 | next = NEXT_SEC (head); |
906e58ca | 3633 | /* Set up this stub group. */ |
07d72278 | 3634 | htab->stub_group[head->id].link_sec = curr; |
906e58ca | 3635 | } |
07d72278 | 3636 | while (head != curr && (head = next) != NULL); |
906e58ca NC |
3637 | |
3638 | /* But wait, there's more! Input sections up to stub_group_size | |
07d72278 DJ |
3639 | bytes after the stub section can be handled by it too. */ |
3640 | if (!stubs_always_after_branch) | |
906e58ca | 3641 | { |
e780aef2 CL |
3642 | stub_group_start = curr->output_offset + curr->size; |
3643 | ||
8cd931b7 | 3644 | while (next != NULL) |
906e58ca | 3645 | { |
e780aef2 CL |
3646 | end_of_next = next->output_offset + next->size; |
3647 | if (end_of_next - stub_group_start >= stub_group_size) | |
3648 | /* End of NEXT is too far from stubs, so stop. */ | |
8cd931b7 | 3649 | break; |
e780aef2 | 3650 | /* Add NEXT to the stub group. */ |
07d72278 DJ |
3651 | head = next; |
3652 | next = NEXT_SEC (head); | |
3653 | htab->stub_group[head->id].link_sec = curr; | |
906e58ca NC |
3654 | } |
3655 | } | |
07d72278 | 3656 | head = next; |
906e58ca NC |
3657 | } |
3658 | } | |
07d72278 | 3659 | while (list++ != htab->input_list + htab->top_index); |
906e58ca NC |
3660 | |
3661 | free (htab->input_list); | |
3662 | #undef PREV_SEC | |
07d72278 | 3663 | #undef NEXT_SEC |
906e58ca NC |
3664 | } |
3665 | ||
3666 | /* Determine and set the size of the stub section for a final link. | |
3667 | ||
3668 | The basic idea here is to examine all the relocations looking for | |
3669 | PC-relative calls to a target that is unreachable with a "bl" | |
3670 | instruction. */ | |
3671 | ||
3672 | bfd_boolean | |
3673 | elf32_arm_size_stubs (bfd *output_bfd, | |
3674 | bfd *stub_bfd, | |
3675 | struct bfd_link_info *info, | |
3676 | bfd_signed_vma group_size, | |
3677 | asection * (*add_stub_section) (const char *, asection *), | |
3678 | void (*layout_sections_again) (void)) | |
3679 | { | |
3680 | bfd_size_type stub_group_size; | |
07d72278 | 3681 | bfd_boolean stubs_always_after_branch; |
906e58ca NC |
3682 | bfd_boolean stub_changed = 0; |
3683 | struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info); | |
3684 | ||
3685 | /* Propagate mach to stub bfd, because it may not have been | |
3686 | finalized when we created stub_bfd. */ | |
3687 | bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd), | |
3688 | bfd_get_mach (output_bfd)); | |
3689 | ||
3690 | /* Stash our params away. */ | |
3691 | htab->stub_bfd = stub_bfd; | |
3692 | htab->add_stub_section = add_stub_section; | |
3693 | htab->layout_sections_again = layout_sections_again; | |
07d72278 | 3694 | stubs_always_after_branch = group_size < 0; |
906e58ca NC |
3695 | if (group_size < 0) |
3696 | stub_group_size = -group_size; | |
3697 | else | |
3698 | stub_group_size = group_size; | |
3699 | ||
3700 | if (stub_group_size == 1) | |
3701 | { | |
3702 | /* Default values. */ | |
3703 | /* Thumb branch range is +-4MB has to be used as the default | |
3704 | maximum size (a given section can contain both ARM and Thumb | |
3705 | code, so the worst case has to be taken into account). | |
3706 | ||
3707 | This value is 24K less than that, which allows for 2025 | |
3708 | 12-byte stubs. If we exceed that, then we will fail to link. | |
3709 | The user will have to relink with an explicit group size | |
3710 | option. */ | |
3711 | stub_group_size = 4170000; | |
3712 | } | |
3713 | ||
07d72278 | 3714 | group_sections (htab, stub_group_size, stubs_always_after_branch); |
906e58ca NC |
3715 | |
3716 | while (1) | |
3717 | { | |
3718 | bfd *input_bfd; | |
3719 | unsigned int bfd_indx; | |
3720 | asection *stub_sec; | |
3721 | ||
3722 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
3723 | input_bfd != NULL; | |
3724 | input_bfd = input_bfd->link_next, bfd_indx++) | |
3725 | { | |
3726 | Elf_Internal_Shdr *symtab_hdr; | |
3727 | asection *section; | |
3728 | Elf_Internal_Sym *local_syms = NULL; | |
3729 | ||
3730 | /* We'll need the symbol table in a second. */ | |
3731 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3732 | if (symtab_hdr->sh_info == 0) | |
3733 | continue; | |
3734 | ||
3735 | /* Walk over each section attached to the input bfd. */ | |
3736 | for (section = input_bfd->sections; | |
3737 | section != NULL; | |
3738 | section = section->next) | |
3739 | { | |
3740 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
3741 | ||
3742 | /* If there aren't any relocs, then there's nothing more | |
3743 | to do. */ | |
3744 | if ((section->flags & SEC_RELOC) == 0 | |
3745 | || section->reloc_count == 0 | |
3746 | || (section->flags & SEC_CODE) == 0) | |
3747 | continue; | |
3748 | ||
3749 | /* If this section is a link-once section that will be | |
3750 | discarded, then don't create any stubs. */ | |
3751 | if (section->output_section == NULL | |
3752 | || section->output_section->owner != output_bfd) | |
3753 | continue; | |
3754 | ||
3755 | /* Get the relocs. */ | |
3756 | internal_relocs | |
3757 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, | |
3758 | NULL, info->keep_memory); | |
3759 | if (internal_relocs == NULL) | |
3760 | goto error_ret_free_local; | |
3761 | ||
3762 | /* Now examine each relocation. */ | |
3763 | irela = internal_relocs; | |
3764 | irelaend = irela + section->reloc_count; | |
3765 | for (; irela < irelaend; irela++) | |
3766 | { | |
3767 | unsigned int r_type, r_indx; | |
3768 | enum elf32_arm_stub_type stub_type; | |
3769 | struct elf32_arm_stub_hash_entry *stub_entry; | |
3770 | asection *sym_sec; | |
3771 | bfd_vma sym_value; | |
3772 | bfd_vma destination; | |
3773 | struct elf32_arm_link_hash_entry *hash; | |
7413f23f | 3774 | const char *sym_name; |
906e58ca NC |
3775 | char *stub_name; |
3776 | const asection *id_sec; | |
3777 | unsigned char st_type; | |
3778 | ||
3779 | r_type = ELF32_R_TYPE (irela->r_info); | |
3780 | r_indx = ELF32_R_SYM (irela->r_info); | |
3781 | ||
3782 | if (r_type >= (unsigned int) R_ARM_max) | |
3783 | { | |
3784 | bfd_set_error (bfd_error_bad_value); | |
3785 | error_ret_free_internal: | |
3786 | if (elf_section_data (section)->relocs == NULL) | |
3787 | free (internal_relocs); | |
3788 | goto error_ret_free_local; | |
3789 | } | |
3790 | ||
155d87d7 | 3791 | /* Only look for stubs on branch instructions. */ |
906e58ca | 3792 | if ((r_type != (unsigned int) R_ARM_CALL) |
155d87d7 CL |
3793 | && (r_type != (unsigned int) R_ARM_THM_CALL) |
3794 | && (r_type != (unsigned int) R_ARM_JUMP24) | |
3795 | && (r_type != (unsigned int) R_ARM_THM_JUMP24) | |
3796 | && (r_type != (unsigned int) R_ARM_PLT32)) | |
906e58ca NC |
3797 | continue; |
3798 | ||
3799 | /* Now determine the call target, its name, value, | |
3800 | section. */ | |
3801 | sym_sec = NULL; | |
3802 | sym_value = 0; | |
3803 | destination = 0; | |
3804 | hash = NULL; | |
7413f23f | 3805 | sym_name = NULL; |
906e58ca NC |
3806 | if (r_indx < symtab_hdr->sh_info) |
3807 | { | |
3808 | /* It's a local symbol. */ | |
3809 | Elf_Internal_Sym *sym; | |
3810 | Elf_Internal_Shdr *hdr; | |
3811 | ||
3812 | if (local_syms == NULL) | |
3813 | { | |
3814 | local_syms | |
3815 | = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3816 | if (local_syms == NULL) | |
3817 | local_syms | |
3818 | = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
3819 | symtab_hdr->sh_info, 0, | |
3820 | NULL, NULL, NULL); | |
3821 | if (local_syms == NULL) | |
3822 | goto error_ret_free_internal; | |
3823 | } | |
3824 | ||
3825 | sym = local_syms + r_indx; | |
3826 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
3827 | sym_sec = hdr->bfd_section; | |
3828 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
3829 | sym_value = sym->st_value; | |
3830 | destination = (sym_value + irela->r_addend | |
3831 | + sym_sec->output_offset | |
3832 | + sym_sec->output_section->vma); | |
3833 | st_type = ELF_ST_TYPE (sym->st_info); | |
7413f23f DJ |
3834 | sym_name |
3835 | = bfd_elf_string_from_elf_section (input_bfd, | |
3836 | symtab_hdr->sh_link, | |
3837 | sym->st_name); | |
906e58ca NC |
3838 | } |
3839 | else | |
3840 | { | |
3841 | /* It's an external symbol. */ | |
3842 | int e_indx; | |
3843 | ||
3844 | e_indx = r_indx - symtab_hdr->sh_info; | |
3845 | hash = ((struct elf32_arm_link_hash_entry *) | |
3846 | elf_sym_hashes (input_bfd)[e_indx]); | |
3847 | ||
3848 | while (hash->root.root.type == bfd_link_hash_indirect | |
3849 | || hash->root.root.type == bfd_link_hash_warning) | |
3850 | hash = ((struct elf32_arm_link_hash_entry *) | |
3851 | hash->root.root.u.i.link); | |
3852 | ||
3853 | if (hash->root.root.type == bfd_link_hash_defined | |
3854 | || hash->root.root.type == bfd_link_hash_defweak) | |
3855 | { | |
3856 | sym_sec = hash->root.root.u.def.section; | |
3857 | sym_value = hash->root.root.u.def.value; | |
3858 | if (sym_sec->output_section != NULL) | |
3859 | destination = (sym_value + irela->r_addend | |
3860 | + sym_sec->output_offset | |
3861 | + sym_sec->output_section->vma); | |
3862 | } | |
69c5861e CL |
3863 | else if ((hash->root.root.type == bfd_link_hash_undefined) |
3864 | || (hash->root.root.type == bfd_link_hash_undefweak)) | |
3865 | { | |
3866 | /* For a shared library, use the PLT stub as | |
3867 | target address to decide whether a long | |
3868 | branch stub is needed. | |
3869 | For absolute code, they cannot be handled. */ | |
3870 | struct elf32_arm_link_hash_table *globals = | |
3871 | elf32_arm_hash_table (info); | |
3872 | ||
3873 | if (globals->splt != NULL && hash != NULL | |
3874 | && hash->root.plt.offset != (bfd_vma) -1) | |
3875 | { | |
3876 | sym_sec = globals->splt; | |
3877 | sym_value = hash->root.plt.offset; | |
3878 | if (sym_sec->output_section != NULL) | |
3879 | destination = (sym_value | |
3880 | + sym_sec->output_offset | |
3881 | + sym_sec->output_section->vma); | |
3882 | } | |
3883 | else | |
3884 | continue; | |
3885 | } | |
906e58ca NC |
3886 | else |
3887 | { | |
3888 | bfd_set_error (bfd_error_bad_value); | |
3889 | goto error_ret_free_internal; | |
3890 | } | |
3891 | st_type = ELF_ST_TYPE (hash->root.type); | |
7413f23f | 3892 | sym_name = hash->root.root.root.string; |
906e58ca NC |
3893 | } |
3894 | ||
3895 | /* Determine what (if any) linker stub is needed. */ | |
3896 | stub_type = arm_type_of_stub (info, section, irela, st_type, | |
c820be07 NC |
3897 | hash, destination, sym_sec, |
3898 | input_bfd, sym_name); | |
906e58ca NC |
3899 | if (stub_type == arm_stub_none) |
3900 | continue; | |
5e681ec4 | 3901 | |
906e58ca NC |
3902 | /* Support for grouping stub sections. */ |
3903 | id_sec = htab->stub_group[section->id].link_sec; | |
5e681ec4 | 3904 | |
906e58ca NC |
3905 | /* Get the name of this stub. */ |
3906 | stub_name = elf32_arm_stub_name (id_sec, sym_sec, hash, irela); | |
3907 | if (!stub_name) | |
3908 | goto error_ret_free_internal; | |
5e681ec4 | 3909 | |
906e58ca NC |
3910 | stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, |
3911 | stub_name, | |
3912 | FALSE, FALSE); | |
3913 | if (stub_entry != NULL) | |
3914 | { | |
3915 | /* The proper stub has already been created. */ | |
3916 | free (stub_name); | |
3917 | continue; | |
3918 | } | |
5e681ec4 | 3919 | |
da5938a2 | 3920 | stub_entry = elf32_arm_add_stub (stub_name, section, htab); |
906e58ca NC |
3921 | if (stub_entry == NULL) |
3922 | { | |
3923 | free (stub_name); | |
3924 | goto error_ret_free_internal; | |
3925 | } | |
5e681ec4 | 3926 | |
906e58ca NC |
3927 | stub_entry->target_value = sym_value; |
3928 | stub_entry->target_section = sym_sec; | |
3929 | stub_entry->stub_type = stub_type; | |
3930 | stub_entry->h = hash; | |
3931 | stub_entry->st_type = st_type; | |
7413f23f DJ |
3932 | |
3933 | if (sym_name == NULL) | |
3934 | sym_name = "unnamed"; | |
3935 | stub_entry->output_name | |
3936 | = bfd_alloc (htab->stub_bfd, | |
3937 | sizeof (THUMB2ARM_GLUE_ENTRY_NAME) | |
3938 | + strlen (sym_name)); | |
3939 | if (stub_entry->output_name == NULL) | |
3940 | { | |
3941 | free (stub_name); | |
3942 | goto error_ret_free_internal; | |
3943 | } | |
3944 | ||
3945 | /* For historical reasons, use the existing names for | |
3946 | ARM-to-Thumb and Thumb-to-ARM stubs. */ | |
155d87d7 CL |
3947 | if ( ((r_type == (unsigned int) R_ARM_THM_CALL) |
3948 | || (r_type == (unsigned int) R_ARM_THM_JUMP24)) | |
3949 | && st_type != STT_ARM_TFUNC) | |
7413f23f DJ |
3950 | sprintf (stub_entry->output_name, THUMB2ARM_GLUE_ENTRY_NAME, |
3951 | sym_name); | |
155d87d7 CL |
3952 | else if ( ((r_type == (unsigned int) R_ARM_CALL) |
3953 | || (r_type == (unsigned int) R_ARM_JUMP24)) | |
7413f23f DJ |
3954 | && st_type == STT_ARM_TFUNC) |
3955 | sprintf (stub_entry->output_name, ARM2THUMB_GLUE_ENTRY_NAME, | |
3956 | sym_name); | |
3957 | else | |
3958 | sprintf (stub_entry->output_name, STUB_ENTRY_NAME, | |
3959 | sym_name); | |
3960 | ||
906e58ca NC |
3961 | stub_changed = TRUE; |
3962 | } | |
3963 | ||
3964 | /* We're done with the internal relocs, free them. */ | |
3965 | if (elf_section_data (section)->relocs == NULL) | |
3966 | free (internal_relocs); | |
5e681ec4 | 3967 | } |
5e681ec4 PB |
3968 | } |
3969 | ||
906e58ca NC |
3970 | if (!stub_changed) |
3971 | break; | |
5e681ec4 | 3972 | |
906e58ca NC |
3973 | /* OK, we've added some stubs. Find out the new size of the |
3974 | stub sections. */ | |
3975 | for (stub_sec = htab->stub_bfd->sections; | |
3976 | stub_sec != NULL; | |
3977 | stub_sec = stub_sec->next) | |
3e6b1042 DJ |
3978 | { |
3979 | /* Ignore non-stub sections. */ | |
3980 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
3981 | continue; | |
3982 | ||
3983 | stub_sec->size = 0; | |
3984 | } | |
b34b2d70 | 3985 | |
906e58ca NC |
3986 | bfd_hash_traverse (&htab->stub_hash_table, arm_size_one_stub, htab); |
3987 | ||
3988 | /* Ask the linker to do its stuff. */ | |
3989 | (*htab->layout_sections_again) (); | |
3990 | stub_changed = FALSE; | |
ba93b8ac DJ |
3991 | } |
3992 | ||
906e58ca NC |
3993 | return TRUE; |
3994 | ||
3995 | error_ret_free_local: | |
3996 | return FALSE; | |
5e681ec4 PB |
3997 | } |
3998 | ||
906e58ca NC |
3999 | /* Build all the stubs associated with the current output file. The |
4000 | stubs are kept in a hash table attached to the main linker hash | |
4001 | table. We also set up the .plt entries for statically linked PIC | |
4002 | functions here. This function is called via arm_elf_finish in the | |
4003 | linker. */ | |
252b5132 | 4004 | |
906e58ca NC |
4005 | bfd_boolean |
4006 | elf32_arm_build_stubs (struct bfd_link_info *info) | |
252b5132 | 4007 | { |
906e58ca NC |
4008 | asection *stub_sec; |
4009 | struct bfd_hash_table *table; | |
4010 | struct elf32_arm_link_hash_table *htab; | |
252b5132 | 4011 | |
906e58ca | 4012 | htab = elf32_arm_hash_table (info); |
252b5132 | 4013 | |
906e58ca NC |
4014 | for (stub_sec = htab->stub_bfd->sections; |
4015 | stub_sec != NULL; | |
4016 | stub_sec = stub_sec->next) | |
252b5132 | 4017 | { |
906e58ca NC |
4018 | bfd_size_type size; |
4019 | ||
8029a119 | 4020 | /* Ignore non-stub sections. */ |
906e58ca NC |
4021 | if (!strstr (stub_sec->name, STUB_SUFFIX)) |
4022 | continue; | |
4023 | ||
4024 | /* Allocate memory to hold the linker stubs. */ | |
4025 | size = stub_sec->size; | |
4026 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, size); | |
4027 | if (stub_sec->contents == NULL && size != 0) | |
4028 | return FALSE; | |
4029 | stub_sec->size = 0; | |
252b5132 RH |
4030 | } |
4031 | ||
906e58ca NC |
4032 | /* Build the stubs as directed by the stub hash table. */ |
4033 | table = &htab->stub_hash_table; | |
4034 | bfd_hash_traverse (table, arm_build_one_stub, info); | |
252b5132 | 4035 | |
906e58ca | 4036 | return TRUE; |
252b5132 RH |
4037 | } |
4038 | ||
9b485d32 NC |
4039 | /* Locate the Thumb encoded calling stub for NAME. */ |
4040 | ||
252b5132 | 4041 | static struct elf_link_hash_entry * |
57e8b36a NC |
4042 | find_thumb_glue (struct bfd_link_info *link_info, |
4043 | const char *name, | |
f2a9dd69 | 4044 | char **error_message) |
252b5132 RH |
4045 | { |
4046 | char *tmp_name; | |
4047 | struct elf_link_hash_entry *hash; | |
4048 | struct elf32_arm_link_hash_table *hash_table; | |
4049 | ||
4050 | /* We need a pointer to the armelf specific hash table. */ | |
4051 | hash_table = elf32_arm_hash_table (link_info); | |
4052 | ||
57e8b36a NC |
4053 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
4054 | + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1); | |
252b5132 RH |
4055 | |
4056 | BFD_ASSERT (tmp_name); | |
4057 | ||
4058 | sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); | |
4059 | ||
4060 | hash = elf_link_hash_lookup | |
b34976b6 | 4061 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 | 4062 | |
b1657152 AM |
4063 | if (hash == NULL |
4064 | && asprintf (error_message, _("unable to find THUMB glue '%s' for '%s'"), | |
4065 | tmp_name, name) == -1) | |
4066 | *error_message = (char *) bfd_errmsg (bfd_error_system_call); | |
252b5132 RH |
4067 | |
4068 | free (tmp_name); | |
4069 | ||
4070 | return hash; | |
4071 | } | |
4072 | ||
9b485d32 NC |
4073 | /* Locate the ARM encoded calling stub for NAME. */ |
4074 | ||
252b5132 | 4075 | static struct elf_link_hash_entry * |
57e8b36a NC |
4076 | find_arm_glue (struct bfd_link_info *link_info, |
4077 | const char *name, | |
f2a9dd69 | 4078 | char **error_message) |
252b5132 RH |
4079 | { |
4080 | char *tmp_name; | |
4081 | struct elf_link_hash_entry *myh; | |
4082 | struct elf32_arm_link_hash_table *hash_table; | |
4083 | ||
4084 | /* We need a pointer to the elfarm specific hash table. */ | |
4085 | hash_table = elf32_arm_hash_table (link_info); | |
4086 | ||
57e8b36a NC |
4087 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
4088 | + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1); | |
252b5132 RH |
4089 | |
4090 | BFD_ASSERT (tmp_name); | |
4091 | ||
4092 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); | |
4093 | ||
4094 | myh = elf_link_hash_lookup | |
b34976b6 | 4095 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 | 4096 | |
b1657152 AM |
4097 | if (myh == NULL |
4098 | && asprintf (error_message, _("unable to find ARM glue '%s' for '%s'"), | |
4099 | tmp_name, name) == -1) | |
4100 | *error_message = (char *) bfd_errmsg (bfd_error_system_call); | |
252b5132 RH |
4101 | |
4102 | free (tmp_name); | |
4103 | ||
4104 | return myh; | |
4105 | } | |
4106 | ||
8f6277f5 | 4107 | /* ARM->Thumb glue (static images): |
252b5132 RH |
4108 | |
4109 | .arm | |
4110 | __func_from_arm: | |
4111 | ldr r12, __func_addr | |
4112 | bx r12 | |
4113 | __func_addr: | |
906e58ca | 4114 | .word func @ behave as if you saw a ARM_32 reloc. |
252b5132 | 4115 | |
26079076 PB |
4116 | (v5t static images) |
4117 | .arm | |
4118 | __func_from_arm: | |
4119 | ldr pc, __func_addr | |
4120 | __func_addr: | |
906e58ca | 4121 | .word func @ behave as if you saw a ARM_32 reloc. |
26079076 | 4122 | |
8f6277f5 PB |
4123 | (relocatable images) |
4124 | .arm | |
4125 | __func_from_arm: | |
4126 | ldr r12, __func_offset | |
4127 | add r12, r12, pc | |
4128 | bx r12 | |
4129 | __func_offset: | |
8029a119 | 4130 | .word func - . */ |
8f6277f5 PB |
4131 | |
4132 | #define ARM2THUMB_STATIC_GLUE_SIZE 12 | |
252b5132 RH |
4133 | static const insn32 a2t1_ldr_insn = 0xe59fc000; |
4134 | static const insn32 a2t2_bx_r12_insn = 0xe12fff1c; | |
4135 | static const insn32 a2t3_func_addr_insn = 0x00000001; | |
4136 | ||
26079076 PB |
4137 | #define ARM2THUMB_V5_STATIC_GLUE_SIZE 8 |
4138 | static const insn32 a2t1v5_ldr_insn = 0xe51ff004; | |
4139 | static const insn32 a2t2v5_func_addr_insn = 0x00000001; | |
4140 | ||
8f6277f5 PB |
4141 | #define ARM2THUMB_PIC_GLUE_SIZE 16 |
4142 | static const insn32 a2t1p_ldr_insn = 0xe59fc004; | |
4143 | static const insn32 a2t2p_add_pc_insn = 0xe08cc00f; | |
4144 | static const insn32 a2t3p_bx_r12_insn = 0xe12fff1c; | |
4145 | ||
9b485d32 | 4146 | /* Thumb->ARM: Thumb->(non-interworking aware) ARM |
252b5132 | 4147 | |
8029a119 NC |
4148 | .thumb .thumb |
4149 | .align 2 .align 2 | |
4150 | __func_from_thumb: __func_from_thumb: | |
4151 | bx pc push {r6, lr} | |
4152 | nop ldr r6, __func_addr | |
4153 | .arm mov lr, pc | |
4154 | b func bx r6 | |
fcef9eb7 NC |
4155 | .arm |
4156 | ;; back_to_thumb | |
4157 | ldmia r13! {r6, lr} | |
4158 | bx lr | |
8029a119 NC |
4159 | __func_addr: |
4160 | .word func */ | |
252b5132 RH |
4161 | |
4162 | #define THUMB2ARM_GLUE_SIZE 8 | |
4163 | static const insn16 t2a1_bx_pc_insn = 0x4778; | |
4164 | static const insn16 t2a2_noop_insn = 0x46c0; | |
4165 | static const insn32 t2a3_b_insn = 0xea000000; | |
4166 | ||
c7b8f16e JB |
4167 | #define VFP11_ERRATUM_VENEER_SIZE 8 |
4168 | ||
845b51d6 PB |
4169 | #define ARM_BX_VENEER_SIZE 12 |
4170 | static const insn32 armbx1_tst_insn = 0xe3100001; | |
4171 | static const insn32 armbx2_moveq_insn = 0x01a0f000; | |
4172 | static const insn32 armbx3_bx_insn = 0xe12fff10; | |
4173 | ||
7e392df6 | 4174 | #ifndef ELFARM_NABI_C_INCLUDED |
8029a119 NC |
4175 | static void |
4176 | arm_allocate_glue_section_space (bfd * abfd, bfd_size_type size, const char * name) | |
252b5132 RH |
4177 | { |
4178 | asection * s; | |
8029a119 | 4179 | bfd_byte * contents; |
252b5132 | 4180 | |
8029a119 | 4181 | if (size == 0) |
3e6b1042 DJ |
4182 | { |
4183 | /* Do not include empty glue sections in the output. */ | |
4184 | if (abfd != NULL) | |
4185 | { | |
4186 | s = bfd_get_section_by_name (abfd, name); | |
4187 | if (s != NULL) | |
4188 | s->flags |= SEC_EXCLUDE; | |
4189 | } | |
4190 | return; | |
4191 | } | |
252b5132 | 4192 | |
8029a119 | 4193 | BFD_ASSERT (abfd != NULL); |
252b5132 | 4194 | |
8029a119 NC |
4195 | s = bfd_get_section_by_name (abfd, name); |
4196 | BFD_ASSERT (s != NULL); | |
252b5132 | 4197 | |
8029a119 | 4198 | contents = bfd_alloc (abfd, size); |
252b5132 | 4199 | |
8029a119 NC |
4200 | BFD_ASSERT (s->size == size); |
4201 | s->contents = contents; | |
4202 | } | |
906e58ca | 4203 | |
8029a119 NC |
4204 | bfd_boolean |
4205 | bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info * info) | |
4206 | { | |
4207 | struct elf32_arm_link_hash_table * globals; | |
906e58ca | 4208 | |
8029a119 NC |
4209 | globals = elf32_arm_hash_table (info); |
4210 | BFD_ASSERT (globals != NULL); | |
906e58ca | 4211 | |
8029a119 NC |
4212 | arm_allocate_glue_section_space (globals->bfd_of_glue_owner, |
4213 | globals->arm_glue_size, | |
4214 | ARM2THUMB_GLUE_SECTION_NAME); | |
906e58ca | 4215 | |
8029a119 NC |
4216 | arm_allocate_glue_section_space (globals->bfd_of_glue_owner, |
4217 | globals->thumb_glue_size, | |
4218 | THUMB2ARM_GLUE_SECTION_NAME); | |
252b5132 | 4219 | |
8029a119 NC |
4220 | arm_allocate_glue_section_space (globals->bfd_of_glue_owner, |
4221 | globals->vfp11_erratum_glue_size, | |
4222 | VFP11_ERRATUM_VENEER_SECTION_NAME); | |
845b51d6 | 4223 | |
8029a119 NC |
4224 | arm_allocate_glue_section_space (globals->bfd_of_glue_owner, |
4225 | globals->bx_glue_size, | |
845b51d6 PB |
4226 | ARM_BX_GLUE_SECTION_NAME); |
4227 | ||
b34976b6 | 4228 | return TRUE; |
252b5132 RH |
4229 | } |
4230 | ||
a4fd1a8e | 4231 | /* Allocate space and symbols for calling a Thumb function from Arm mode. |
906e58ca NC |
4232 | returns the symbol identifying the stub. */ |
4233 | ||
a4fd1a8e | 4234 | static struct elf_link_hash_entry * |
57e8b36a NC |
4235 | record_arm_to_thumb_glue (struct bfd_link_info * link_info, |
4236 | struct elf_link_hash_entry * h) | |
252b5132 RH |
4237 | { |
4238 | const char * name = h->root.root.string; | |
63b0f745 | 4239 | asection * s; |
252b5132 RH |
4240 | char * tmp_name; |
4241 | struct elf_link_hash_entry * myh; | |
14a793b2 | 4242 | struct bfd_link_hash_entry * bh; |
252b5132 | 4243 | struct elf32_arm_link_hash_table * globals; |
dc810e39 | 4244 | bfd_vma val; |
2f475487 | 4245 | bfd_size_type size; |
252b5132 RH |
4246 | |
4247 | globals = elf32_arm_hash_table (link_info); | |
4248 | ||
4249 | BFD_ASSERT (globals != NULL); | |
4250 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
4251 | ||
4252 | s = bfd_get_section_by_name | |
4253 | (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME); | |
4254 | ||
252b5132 RH |
4255 | BFD_ASSERT (s != NULL); |
4256 | ||
57e8b36a | 4257 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1); |
252b5132 RH |
4258 | |
4259 | BFD_ASSERT (tmp_name); | |
4260 | ||
4261 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); | |
4262 | ||
4263 | myh = elf_link_hash_lookup | |
b34976b6 | 4264 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 RH |
4265 | |
4266 | if (myh != NULL) | |
4267 | { | |
9b485d32 | 4268 | /* We've already seen this guy. */ |
252b5132 | 4269 | free (tmp_name); |
a4fd1a8e | 4270 | return myh; |
252b5132 RH |
4271 | } |
4272 | ||
57e8b36a NC |
4273 | /* The only trick here is using hash_table->arm_glue_size as the value. |
4274 | Even though the section isn't allocated yet, this is where we will be | |
3dccd7b7 DJ |
4275 | putting it. The +1 on the value marks that the stub has not been |
4276 | output yet - not that it is a Thumb function. */ | |
14a793b2 | 4277 | bh = NULL; |
dc810e39 AM |
4278 | val = globals->arm_glue_size + 1; |
4279 | _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner, | |
4280 | tmp_name, BSF_GLOBAL, s, val, | |
b34976b6 | 4281 | NULL, TRUE, FALSE, &bh); |
252b5132 | 4282 | |
b7693d02 DJ |
4283 | myh = (struct elf_link_hash_entry *) bh; |
4284 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
4285 | myh->forced_local = 1; | |
4286 | ||
252b5132 RH |
4287 | free (tmp_name); |
4288 | ||
27e55c4d PB |
4289 | if (link_info->shared || globals->root.is_relocatable_executable |
4290 | || globals->pic_veneer) | |
2f475487 | 4291 | size = ARM2THUMB_PIC_GLUE_SIZE; |
26079076 PB |
4292 | else if (globals->use_blx) |
4293 | size = ARM2THUMB_V5_STATIC_GLUE_SIZE; | |
8f6277f5 | 4294 | else |
2f475487 AM |
4295 | size = ARM2THUMB_STATIC_GLUE_SIZE; |
4296 | ||
4297 | s->size += size; | |
4298 | globals->arm_glue_size += size; | |
252b5132 | 4299 | |
a4fd1a8e | 4300 | return myh; |
252b5132 RH |
4301 | } |
4302 | ||
845b51d6 PB |
4303 | /* Allocate space for ARMv4 BX veneers. */ |
4304 | ||
4305 | static void | |
4306 | record_arm_bx_glue (struct bfd_link_info * link_info, int reg) | |
4307 | { | |
4308 | asection * s; | |
4309 | struct elf32_arm_link_hash_table *globals; | |
4310 | char *tmp_name; | |
4311 | struct elf_link_hash_entry *myh; | |
4312 | struct bfd_link_hash_entry *bh; | |
4313 | bfd_vma val; | |
4314 | ||
4315 | /* BX PC does not need a veneer. */ | |
4316 | if (reg == 15) | |
4317 | return; | |
4318 | ||
4319 | globals = elf32_arm_hash_table (link_info); | |
4320 | ||
4321 | BFD_ASSERT (globals != NULL); | |
4322 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
4323 | ||
4324 | /* Check if this veneer has already been allocated. */ | |
4325 | if (globals->bx_glue_offset[reg]) | |
4326 | return; | |
4327 | ||
4328 | s = bfd_get_section_by_name | |
4329 | (globals->bfd_of_glue_owner, ARM_BX_GLUE_SECTION_NAME); | |
4330 | ||
4331 | BFD_ASSERT (s != NULL); | |
4332 | ||
4333 | /* Add symbol for veneer. */ | |
4334 | tmp_name = bfd_malloc ((bfd_size_type) strlen (ARM_BX_GLUE_ENTRY_NAME) + 1); | |
906e58ca | 4335 | |
845b51d6 | 4336 | BFD_ASSERT (tmp_name); |
906e58ca | 4337 | |
845b51d6 | 4338 | sprintf (tmp_name, ARM_BX_GLUE_ENTRY_NAME, reg); |
906e58ca | 4339 | |
845b51d6 PB |
4340 | myh = elf_link_hash_lookup |
4341 | (&(globals)->root, tmp_name, FALSE, FALSE, FALSE); | |
906e58ca | 4342 | |
845b51d6 | 4343 | BFD_ASSERT (myh == NULL); |
906e58ca | 4344 | |
845b51d6 PB |
4345 | bh = NULL; |
4346 | val = globals->bx_glue_size; | |
4347 | _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner, | |
4348 | tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val, | |
4349 | NULL, TRUE, FALSE, &bh); | |
4350 | ||
4351 | myh = (struct elf_link_hash_entry *) bh; | |
4352 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
4353 | myh->forced_local = 1; | |
4354 | ||
4355 | s->size += ARM_BX_VENEER_SIZE; | |
4356 | globals->bx_glue_offset[reg] = globals->bx_glue_size | 2; | |
4357 | globals->bx_glue_size += ARM_BX_VENEER_SIZE; | |
4358 | } | |
4359 | ||
4360 | ||
c7b8f16e JB |
4361 | /* Add an entry to the code/data map for section SEC. */ |
4362 | ||
4363 | static void | |
4364 | elf32_arm_section_map_add (asection *sec, char type, bfd_vma vma) | |
4365 | { | |
4366 | struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec); | |
4367 | unsigned int newidx; | |
906e58ca | 4368 | |
c7b8f16e JB |
4369 | if (sec_data->map == NULL) |
4370 | { | |
4371 | sec_data->map = bfd_malloc (sizeof (elf32_arm_section_map)); | |
4372 | sec_data->mapcount = 0; | |
4373 | sec_data->mapsize = 1; | |
4374 | } | |
906e58ca | 4375 | |
c7b8f16e | 4376 | newidx = sec_data->mapcount++; |
906e58ca | 4377 | |
c7b8f16e JB |
4378 | if (sec_data->mapcount > sec_data->mapsize) |
4379 | { | |
4380 | sec_data->mapsize *= 2; | |
515ef31d NC |
4381 | sec_data->map = bfd_realloc_or_free (sec_data->map, sec_data->mapsize |
4382 | * sizeof (elf32_arm_section_map)); | |
4383 | } | |
4384 | ||
4385 | if (sec_data->map) | |
4386 | { | |
4387 | sec_data->map[newidx].vma = vma; | |
4388 | sec_data->map[newidx].type = type; | |
c7b8f16e | 4389 | } |
c7b8f16e JB |
4390 | } |
4391 | ||
4392 | ||
4393 | /* Record information about a VFP11 denorm-erratum veneer. Only ARM-mode | |
4394 | veneers are handled for now. */ | |
4395 | ||
4396 | static bfd_vma | |
4397 | record_vfp11_erratum_veneer (struct bfd_link_info *link_info, | |
4398 | elf32_vfp11_erratum_list *branch, | |
4399 | bfd *branch_bfd, | |
4400 | asection *branch_sec, | |
4401 | unsigned int offset) | |
4402 | { | |
4403 | asection *s; | |
4404 | struct elf32_arm_link_hash_table *hash_table; | |
4405 | char *tmp_name; | |
4406 | struct elf_link_hash_entry *myh; | |
4407 | struct bfd_link_hash_entry *bh; | |
4408 | bfd_vma val; | |
4409 | struct _arm_elf_section_data *sec_data; | |
4410 | int errcount; | |
4411 | elf32_vfp11_erratum_list *newerr; | |
906e58ca | 4412 | |
c7b8f16e | 4413 | hash_table = elf32_arm_hash_table (link_info); |
906e58ca | 4414 | |
c7b8f16e JB |
4415 | BFD_ASSERT (hash_table != NULL); |
4416 | BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL); | |
906e58ca | 4417 | |
c7b8f16e JB |
4418 | s = bfd_get_section_by_name |
4419 | (hash_table->bfd_of_glue_owner, VFP11_ERRATUM_VENEER_SECTION_NAME); | |
906e58ca | 4420 | |
c7b8f16e | 4421 | sec_data = elf32_arm_section_data (s); |
906e58ca | 4422 | |
c7b8f16e | 4423 | BFD_ASSERT (s != NULL); |
906e58ca | 4424 | |
c7b8f16e JB |
4425 | tmp_name = bfd_malloc ((bfd_size_type) strlen |
4426 | (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10); | |
906e58ca | 4427 | |
c7b8f16e | 4428 | BFD_ASSERT (tmp_name); |
906e58ca | 4429 | |
c7b8f16e JB |
4430 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME, |
4431 | hash_table->num_vfp11_fixes); | |
906e58ca | 4432 | |
c7b8f16e JB |
4433 | myh = elf_link_hash_lookup |
4434 | (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE); | |
906e58ca | 4435 | |
c7b8f16e | 4436 | BFD_ASSERT (myh == NULL); |
906e58ca | 4437 | |
c7b8f16e JB |
4438 | bh = NULL; |
4439 | val = hash_table->vfp11_erratum_glue_size; | |
4440 | _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, | |
4441 | tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val, | |
4442 | NULL, TRUE, FALSE, &bh); | |
4443 | ||
4444 | myh = (struct elf_link_hash_entry *) bh; | |
4445 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
4446 | myh->forced_local = 1; | |
4447 | ||
4448 | /* Link veneer back to calling location. */ | |
4449 | errcount = ++(sec_data->erratumcount); | |
4450 | newerr = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list)); | |
906e58ca | 4451 | |
c7b8f16e JB |
4452 | newerr->type = VFP11_ERRATUM_ARM_VENEER; |
4453 | newerr->vma = -1; | |
4454 | newerr->u.v.branch = branch; | |
4455 | newerr->u.v.id = hash_table->num_vfp11_fixes; | |
4456 | branch->u.b.veneer = newerr; | |
4457 | ||
4458 | newerr->next = sec_data->erratumlist; | |
4459 | sec_data->erratumlist = newerr; | |
4460 | ||
4461 | /* A symbol for the return from the veneer. */ | |
4462 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r", | |
4463 | hash_table->num_vfp11_fixes); | |
4464 | ||
4465 | myh = elf_link_hash_lookup | |
4466 | (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE); | |
906e58ca | 4467 | |
c7b8f16e JB |
4468 | if (myh != NULL) |
4469 | abort (); | |
4470 | ||
4471 | bh = NULL; | |
4472 | val = offset + 4; | |
4473 | _bfd_generic_link_add_one_symbol (link_info, branch_bfd, tmp_name, BSF_LOCAL, | |
4474 | branch_sec, val, NULL, TRUE, FALSE, &bh); | |
906e58ca | 4475 | |
c7b8f16e JB |
4476 | myh = (struct elf_link_hash_entry *) bh; |
4477 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
4478 | myh->forced_local = 1; | |
4479 | ||
4480 | free (tmp_name); | |
906e58ca | 4481 | |
c7b8f16e JB |
4482 | /* Generate a mapping symbol for the veneer section, and explicitly add an |
4483 | entry for that symbol to the code/data map for the section. */ | |
4484 | if (hash_table->vfp11_erratum_glue_size == 0) | |
4485 | { | |
4486 | bh = NULL; | |
4487 | /* FIXME: Creates an ARM symbol. Thumb mode will need attention if it | |
4488 | ever requires this erratum fix. */ | |
4489 | _bfd_generic_link_add_one_symbol (link_info, | |
4490 | hash_table->bfd_of_glue_owner, "$a", | |
4491 | BSF_LOCAL, s, 0, NULL, | |
4492 | TRUE, FALSE, &bh); | |
4493 | ||
4494 | myh = (struct elf_link_hash_entry *) bh; | |
4495 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
4496 | myh->forced_local = 1; | |
906e58ca | 4497 | |
c7b8f16e JB |
4498 | /* The elf32_arm_init_maps function only cares about symbols from input |
4499 | BFDs. We must make a note of this generated mapping symbol | |
4500 | ourselves so that code byteswapping works properly in | |
4501 | elf32_arm_write_section. */ | |
4502 | elf32_arm_section_map_add (s, 'a', 0); | |
4503 | } | |
906e58ca | 4504 | |
c7b8f16e JB |
4505 | s->size += VFP11_ERRATUM_VENEER_SIZE; |
4506 | hash_table->vfp11_erratum_glue_size += VFP11_ERRATUM_VENEER_SIZE; | |
4507 | hash_table->num_vfp11_fixes++; | |
906e58ca | 4508 | |
c7b8f16e JB |
4509 | /* The offset of the veneer. */ |
4510 | return val; | |
4511 | } | |
4512 | ||
8029a119 | 4513 | #define ARM_GLUE_SECTION_FLAGS \ |
3e6b1042 DJ |
4514 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_CODE \ |
4515 | | SEC_READONLY | SEC_LINKER_CREATED) | |
8029a119 NC |
4516 | |
4517 | /* Create a fake section for use by the ARM backend of the linker. */ | |
4518 | ||
4519 | static bfd_boolean | |
4520 | arm_make_glue_section (bfd * abfd, const char * name) | |
4521 | { | |
4522 | asection * sec; | |
4523 | ||
4524 | sec = bfd_get_section_by_name (abfd, name); | |
4525 | if (sec != NULL) | |
4526 | /* Already made. */ | |
4527 | return TRUE; | |
4528 | ||
4529 | sec = bfd_make_section_with_flags (abfd, name, ARM_GLUE_SECTION_FLAGS); | |
4530 | ||
4531 | if (sec == NULL | |
4532 | || !bfd_set_section_alignment (abfd, sec, 2)) | |
4533 | return FALSE; | |
4534 | ||
4535 | /* Set the gc mark to prevent the section from being removed by garbage | |
4536 | collection, despite the fact that no relocs refer to this section. */ | |
4537 | sec->gc_mark = 1; | |
4538 | ||
4539 | return TRUE; | |
4540 | } | |
4541 | ||
8afb0e02 NC |
4542 | /* Add the glue sections to ABFD. This function is called from the |
4543 | linker scripts in ld/emultempl/{armelf}.em. */ | |
9b485d32 | 4544 | |
b34976b6 | 4545 | bfd_boolean |
57e8b36a NC |
4546 | bfd_elf32_arm_add_glue_sections_to_bfd (bfd *abfd, |
4547 | struct bfd_link_info *info) | |
252b5132 | 4548 | { |
8afb0e02 NC |
4549 | /* If we are only performing a partial |
4550 | link do not bother adding the glue. */ | |
1049f94e | 4551 | if (info->relocatable) |
b34976b6 | 4552 | return TRUE; |
252b5132 | 4553 | |
8029a119 NC |
4554 | return arm_make_glue_section (abfd, ARM2THUMB_GLUE_SECTION_NAME) |
4555 | && arm_make_glue_section (abfd, THUMB2ARM_GLUE_SECTION_NAME) | |
4556 | && arm_make_glue_section (abfd, VFP11_ERRATUM_VENEER_SECTION_NAME) | |
4557 | && arm_make_glue_section (abfd, ARM_BX_GLUE_SECTION_NAME); | |
8afb0e02 NC |
4558 | } |
4559 | ||
4560 | /* Select a BFD to be used to hold the sections used by the glue code. | |
4561 | This function is called from the linker scripts in ld/emultempl/ | |
8029a119 | 4562 | {armelf/pe}.em. */ |
8afb0e02 | 4563 | |
b34976b6 | 4564 | bfd_boolean |
57e8b36a | 4565 | bfd_elf32_arm_get_bfd_for_interworking (bfd *abfd, struct bfd_link_info *info) |
8afb0e02 NC |
4566 | { |
4567 | struct elf32_arm_link_hash_table *globals; | |
4568 | ||
4569 | /* If we are only performing a partial link | |
4570 | do not bother getting a bfd to hold the glue. */ | |
1049f94e | 4571 | if (info->relocatable) |
b34976b6 | 4572 | return TRUE; |
8afb0e02 | 4573 | |
b7693d02 DJ |
4574 | /* Make sure we don't attach the glue sections to a dynamic object. */ |
4575 | BFD_ASSERT (!(abfd->flags & DYNAMIC)); | |
4576 | ||
8afb0e02 NC |
4577 | globals = elf32_arm_hash_table (info); |
4578 | ||
4579 | BFD_ASSERT (globals != NULL); | |
4580 | ||
4581 | if (globals->bfd_of_glue_owner != NULL) | |
b34976b6 | 4582 | return TRUE; |
8afb0e02 | 4583 | |
252b5132 RH |
4584 | /* Save the bfd for later use. */ |
4585 | globals->bfd_of_glue_owner = abfd; | |
cedb70c5 | 4586 | |
b34976b6 | 4587 | return TRUE; |
252b5132 RH |
4588 | } |
4589 | ||
906e58ca NC |
4590 | static void |
4591 | check_use_blx (struct elf32_arm_link_hash_table *globals) | |
39b41c9c | 4592 | { |
104d59d1 JM |
4593 | if (bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, |
4594 | Tag_CPU_arch) > 2) | |
39b41c9c PB |
4595 | globals->use_blx = 1; |
4596 | } | |
4597 | ||
b34976b6 | 4598 | bfd_boolean |
57e8b36a | 4599 | bfd_elf32_arm_process_before_allocation (bfd *abfd, |
d504ffc8 | 4600 | struct bfd_link_info *link_info) |
252b5132 RH |
4601 | { |
4602 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 4603 | Elf_Internal_Rela *internal_relocs = NULL; |
252b5132 RH |
4604 | Elf_Internal_Rela *irel, *irelend; |
4605 | bfd_byte *contents = NULL; | |
252b5132 RH |
4606 | |
4607 | asection *sec; | |
4608 | struct elf32_arm_link_hash_table *globals; | |
4609 | ||
4610 | /* If we are only performing a partial link do not bother | |
4611 | to construct any glue. */ | |
1049f94e | 4612 | if (link_info->relocatable) |
b34976b6 | 4613 | return TRUE; |
252b5132 | 4614 | |
39ce1a6a NC |
4615 | /* Here we have a bfd that is to be included on the link. We have a |
4616 | hook to do reloc rummaging, before section sizes are nailed down. */ | |
252b5132 RH |
4617 | globals = elf32_arm_hash_table (link_info); |
4618 | ||
4619 | BFD_ASSERT (globals != NULL); | |
39ce1a6a NC |
4620 | |
4621 | check_use_blx (globals); | |
252b5132 | 4622 | |
d504ffc8 | 4623 | if (globals->byteswap_code && !bfd_big_endian (abfd)) |
e489d0ae | 4624 | { |
d003868e AM |
4625 | _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."), |
4626 | abfd); | |
e489d0ae PB |
4627 | return FALSE; |
4628 | } | |
f21f3fe0 | 4629 | |
39ce1a6a NC |
4630 | /* PR 5398: If we have not decided to include any loadable sections in |
4631 | the output then we will not have a glue owner bfd. This is OK, it | |
4632 | just means that there is nothing else for us to do here. */ | |
4633 | if (globals->bfd_of_glue_owner == NULL) | |
4634 | return TRUE; | |
4635 | ||
252b5132 RH |
4636 | /* Rummage around all the relocs and map the glue vectors. */ |
4637 | sec = abfd->sections; | |
4638 | ||
4639 | if (sec == NULL) | |
b34976b6 | 4640 | return TRUE; |
252b5132 RH |
4641 | |
4642 | for (; sec != NULL; sec = sec->next) | |
4643 | { | |
4644 | if (sec->reloc_count == 0) | |
4645 | continue; | |
4646 | ||
2f475487 AM |
4647 | if ((sec->flags & SEC_EXCLUDE) != 0) |
4648 | continue; | |
4649 | ||
0ffa91dd | 4650 | symtab_hdr = & elf_symtab_hdr (abfd); |
252b5132 | 4651 | |
9b485d32 | 4652 | /* Load the relocs. */ |
6cdc0ccc | 4653 | internal_relocs |
906e58ca | 4654 | = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, FALSE); |
252b5132 | 4655 | |
6cdc0ccc AM |
4656 | if (internal_relocs == NULL) |
4657 | goto error_return; | |
252b5132 | 4658 | |
6cdc0ccc AM |
4659 | irelend = internal_relocs + sec->reloc_count; |
4660 | for (irel = internal_relocs; irel < irelend; irel++) | |
252b5132 RH |
4661 | { |
4662 | long r_type; | |
4663 | unsigned long r_index; | |
252b5132 RH |
4664 | |
4665 | struct elf_link_hash_entry *h; | |
4666 | ||
4667 | r_type = ELF32_R_TYPE (irel->r_info); | |
4668 | r_index = ELF32_R_SYM (irel->r_info); | |
4669 | ||
9b485d32 | 4670 | /* These are the only relocation types we care about. */ |
ba96a88f | 4671 | if ( r_type != R_ARM_PC24 |
845b51d6 | 4672 | && (r_type != R_ARM_V4BX || globals->fix_v4bx < 2)) |
252b5132 RH |
4673 | continue; |
4674 | ||
4675 | /* Get the section contents if we haven't done so already. */ | |
4676 | if (contents == NULL) | |
4677 | { | |
4678 | /* Get cached copy if it exists. */ | |
4679 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
4680 | contents = elf_section_data (sec)->this_hdr.contents; | |
4681 | else | |
4682 | { | |
4683 | /* Go get them off disk. */ | |
57e8b36a | 4684 | if (! bfd_malloc_and_get_section (abfd, sec, &contents)) |
252b5132 RH |
4685 | goto error_return; |
4686 | } | |
4687 | } | |
4688 | ||
845b51d6 PB |
4689 | if (r_type == R_ARM_V4BX) |
4690 | { | |
4691 | int reg; | |
4692 | ||
4693 | reg = bfd_get_32 (abfd, contents + irel->r_offset) & 0xf; | |
4694 | record_arm_bx_glue (link_info, reg); | |
4695 | continue; | |
4696 | } | |
4697 | ||
a7c10850 | 4698 | /* If the relocation is not against a symbol it cannot concern us. */ |
252b5132 RH |
4699 | h = NULL; |
4700 | ||
9b485d32 | 4701 | /* We don't care about local symbols. */ |
252b5132 RH |
4702 | if (r_index < symtab_hdr->sh_info) |
4703 | continue; | |
4704 | ||
9b485d32 | 4705 | /* This is an external symbol. */ |
252b5132 RH |
4706 | r_index -= symtab_hdr->sh_info; |
4707 | h = (struct elf_link_hash_entry *) | |
4708 | elf_sym_hashes (abfd)[r_index]; | |
4709 | ||
4710 | /* If the relocation is against a static symbol it must be within | |
4711 | the current section and so cannot be a cross ARM/Thumb relocation. */ | |
4712 | if (h == NULL) | |
4713 | continue; | |
4714 | ||
d504ffc8 DJ |
4715 | /* If the call will go through a PLT entry then we do not need |
4716 | glue. */ | |
4717 | if (globals->splt != NULL && h->plt.offset != (bfd_vma) -1) | |
b7693d02 DJ |
4718 | continue; |
4719 | ||
252b5132 RH |
4720 | switch (r_type) |
4721 | { | |
4722 | case R_ARM_PC24: | |
4723 | /* This one is a call from arm code. We need to look up | |
2f0ca46a | 4724 | the target of the call. If it is a thumb target, we |
252b5132 | 4725 | insert glue. */ |
ebe24dd4 | 4726 | if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC) |
252b5132 RH |
4727 | record_arm_to_thumb_glue (link_info, h); |
4728 | break; | |
4729 | ||
252b5132 | 4730 | default: |
c6596c5e | 4731 | abort (); |
252b5132 RH |
4732 | } |
4733 | } | |
6cdc0ccc AM |
4734 | |
4735 | if (contents != NULL | |
4736 | && elf_section_data (sec)->this_hdr.contents != contents) | |
4737 | free (contents); | |
4738 | contents = NULL; | |
4739 | ||
4740 | if (internal_relocs != NULL | |
4741 | && elf_section_data (sec)->relocs != internal_relocs) | |
4742 | free (internal_relocs); | |
4743 | internal_relocs = NULL; | |
252b5132 RH |
4744 | } |
4745 | ||
b34976b6 | 4746 | return TRUE; |
9a5aca8c | 4747 | |
252b5132 | 4748 | error_return: |
6cdc0ccc AM |
4749 | if (contents != NULL |
4750 | && elf_section_data (sec)->this_hdr.contents != contents) | |
4751 | free (contents); | |
4752 | if (internal_relocs != NULL | |
4753 | && elf_section_data (sec)->relocs != internal_relocs) | |
4754 | free (internal_relocs); | |
9a5aca8c | 4755 | |
b34976b6 | 4756 | return FALSE; |
252b5132 | 4757 | } |
7e392df6 | 4758 | #endif |
252b5132 | 4759 | |
eb043451 | 4760 | |
c7b8f16e JB |
4761 | /* Initialise maps of ARM/Thumb/data for input BFDs. */ |
4762 | ||
4763 | void | |
4764 | bfd_elf32_arm_init_maps (bfd *abfd) | |
4765 | { | |
4766 | Elf_Internal_Sym *isymbuf; | |
4767 | Elf_Internal_Shdr *hdr; | |
4768 | unsigned int i, localsyms; | |
4769 | ||
af1f4419 NC |
4770 | /* PR 7093: Make sure that we are dealing with an arm elf binary. */ |
4771 | if (! is_arm_elf (abfd)) | |
4772 | return; | |
4773 | ||
c7b8f16e JB |
4774 | if ((abfd->flags & DYNAMIC) != 0) |
4775 | return; | |
4776 | ||
0ffa91dd | 4777 | hdr = & elf_symtab_hdr (abfd); |
c7b8f16e JB |
4778 | localsyms = hdr->sh_info; |
4779 | ||
4780 | /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field | |
4781 | should contain the number of local symbols, which should come before any | |
4782 | global symbols. Mapping symbols are always local. */ | |
4783 | isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, | |
4784 | NULL); | |
4785 | ||
4786 | /* No internal symbols read? Skip this BFD. */ | |
4787 | if (isymbuf == NULL) | |
4788 | return; | |
4789 | ||
4790 | for (i = 0; i < localsyms; i++) | |
4791 | { | |
4792 | Elf_Internal_Sym *isym = &isymbuf[i]; | |
4793 | asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
4794 | const char *name; | |
906e58ca | 4795 | |
c7b8f16e JB |
4796 | if (sec != NULL |
4797 | && ELF_ST_BIND (isym->st_info) == STB_LOCAL) | |
4798 | { | |
4799 | name = bfd_elf_string_from_elf_section (abfd, | |
4800 | hdr->sh_link, isym->st_name); | |
906e58ca | 4801 | |
c7b8f16e JB |
4802 | if (bfd_is_arm_special_symbol_name (name, |
4803 | BFD_ARM_SPECIAL_SYM_TYPE_MAP)) | |
4804 | elf32_arm_section_map_add (sec, name[1], isym->st_value); | |
4805 | } | |
4806 | } | |
4807 | } | |
4808 | ||
4809 | ||
4810 | void | |
4811 | bfd_elf32_arm_set_vfp11_fix (bfd *obfd, struct bfd_link_info *link_info) | |
4812 | { | |
4813 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); | |
104d59d1 | 4814 | obj_attribute *out_attr = elf_known_obj_attributes_proc (obfd); |
906e58ca | 4815 | |
c7b8f16e JB |
4816 | /* We assume that ARMv7+ does not need the VFP11 denorm erratum fix. */ |
4817 | if (out_attr[Tag_CPU_arch].i >= TAG_CPU_ARCH_V7) | |
4818 | { | |
4819 | switch (globals->vfp11_fix) | |
4820 | { | |
4821 | case BFD_ARM_VFP11_FIX_DEFAULT: | |
4822 | case BFD_ARM_VFP11_FIX_NONE: | |
4823 | globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE; | |
4824 | break; | |
906e58ca | 4825 | |
c7b8f16e JB |
4826 | default: |
4827 | /* Give a warning, but do as the user requests anyway. */ | |
4828 | (*_bfd_error_handler) (_("%B: warning: selected VFP11 erratum " | |
4829 | "workaround is not necessary for target architecture"), obfd); | |
4830 | } | |
4831 | } | |
4832 | else if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_DEFAULT) | |
4833 | /* For earlier architectures, we might need the workaround, but do not | |
4834 | enable it by default. If users is running with broken hardware, they | |
4835 | must enable the erratum fix explicitly. */ | |
4836 | globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE; | |
4837 | } | |
4838 | ||
4839 | ||
906e58ca NC |
4840 | enum bfd_arm_vfp11_pipe |
4841 | { | |
c7b8f16e JB |
4842 | VFP11_FMAC, |
4843 | VFP11_LS, | |
4844 | VFP11_DS, | |
4845 | VFP11_BAD | |
4846 | }; | |
4847 | ||
4848 | /* Return a VFP register number. This is encoded as RX:X for single-precision | |
4849 | registers, or X:RX for double-precision registers, where RX is the group of | |
4850 | four bits in the instruction encoding and X is the single extension bit. | |
4851 | RX and X fields are specified using their lowest (starting) bit. The return | |
4852 | value is: | |
4853 | ||
4854 | 0...31: single-precision registers s0...s31 | |
4855 | 32...63: double-precision registers d0...d31. | |
906e58ca | 4856 | |
c7b8f16e JB |
4857 | Although X should be zero for VFP11 (encoding d0...d15 only), we might |
4858 | encounter VFP3 instructions, so we allow the full range for DP registers. */ | |
906e58ca | 4859 | |
c7b8f16e JB |
4860 | static unsigned int |
4861 | bfd_arm_vfp11_regno (unsigned int insn, bfd_boolean is_double, unsigned int rx, | |
4862 | unsigned int x) | |
4863 | { | |
4864 | if (is_double) | |
4865 | return (((insn >> rx) & 0xf) | (((insn >> x) & 1) << 4)) + 32; | |
4866 | else | |
4867 | return (((insn >> rx) & 0xf) << 1) | ((insn >> x) & 1); | |
4868 | } | |
4869 | ||
4870 | /* Set bits in *WMASK according to a register number REG as encoded by | |
4871 | bfd_arm_vfp11_regno(). Ignore d16-d31. */ | |
4872 | ||
4873 | static void | |
4874 | bfd_arm_vfp11_write_mask (unsigned int *wmask, unsigned int reg) | |
4875 | { | |
4876 | if (reg < 32) | |
4877 | *wmask |= 1 << reg; | |
4878 | else if (reg < 48) | |
4879 | *wmask |= 3 << ((reg - 32) * 2); | |
4880 | } | |
4881 | ||
4882 | /* Return TRUE if WMASK overwrites anything in REGS. */ | |
4883 | ||
4884 | static bfd_boolean | |
4885 | bfd_arm_vfp11_antidependency (unsigned int wmask, int *regs, int numregs) | |
4886 | { | |
4887 | int i; | |
906e58ca | 4888 | |
c7b8f16e JB |
4889 | for (i = 0; i < numregs; i++) |
4890 | { | |
4891 | unsigned int reg = regs[i]; | |
4892 | ||
4893 | if (reg < 32 && (wmask & (1 << reg)) != 0) | |
4894 | return TRUE; | |
906e58ca | 4895 | |
c7b8f16e JB |
4896 | reg -= 32; |
4897 | ||
4898 | if (reg >= 16) | |
4899 | continue; | |
906e58ca | 4900 | |
c7b8f16e JB |
4901 | if ((wmask & (3 << (reg * 2))) != 0) |
4902 | return TRUE; | |
4903 | } | |
906e58ca | 4904 | |
c7b8f16e JB |
4905 | return FALSE; |
4906 | } | |
4907 | ||
4908 | /* In this function, we're interested in two things: finding input registers | |
4909 | for VFP data-processing instructions, and finding the set of registers which | |
4910 | arbitrary VFP instructions may write to. We use a 32-bit unsigned int to | |
4911 | hold the written set, so FLDM etc. are easy to deal with (we're only | |
4912 | interested in 32 SP registers or 16 dp registers, due to the VFP version | |
4913 | implemented by the chip in question). DP registers are marked by setting | |
4914 | both SP registers in the write mask). */ | |
4915 | ||
4916 | static enum bfd_arm_vfp11_pipe | |
4917 | bfd_arm_vfp11_insn_decode (unsigned int insn, unsigned int *destmask, int *regs, | |
4918 | int *numregs) | |
4919 | { | |
4920 | enum bfd_arm_vfp11_pipe pipe = VFP11_BAD; | |
4921 | bfd_boolean is_double = ((insn & 0xf00) == 0xb00) ? 1 : 0; | |
4922 | ||
4923 | if ((insn & 0x0f000e10) == 0x0e000a00) /* A data-processing insn. */ | |
4924 | { | |
4925 | unsigned int pqrs; | |
4926 | unsigned int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22); | |
4927 | unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5); | |
4928 | ||
4929 | pqrs = ((insn & 0x00800000) >> 20) | |
4930 | | ((insn & 0x00300000) >> 19) | |
4931 | | ((insn & 0x00000040) >> 6); | |
4932 | ||
4933 | switch (pqrs) | |
4934 | { | |
4935 | case 0: /* fmac[sd]. */ | |
4936 | case 1: /* fnmac[sd]. */ | |
4937 | case 2: /* fmsc[sd]. */ | |
4938 | case 3: /* fnmsc[sd]. */ | |
4939 | pipe = VFP11_FMAC; | |
4940 | bfd_arm_vfp11_write_mask (destmask, fd); | |
4941 | regs[0] = fd; | |
4942 | regs[1] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */ | |
4943 | regs[2] = fm; | |
4944 | *numregs = 3; | |
4945 | break; | |
4946 | ||
4947 | case 4: /* fmul[sd]. */ | |
4948 | case 5: /* fnmul[sd]. */ | |
4949 | case 6: /* fadd[sd]. */ | |
4950 | case 7: /* fsub[sd]. */ | |
4951 | pipe = VFP11_FMAC; | |
4952 | goto vfp_binop; | |
4953 | ||
4954 | case 8: /* fdiv[sd]. */ | |
4955 | pipe = VFP11_DS; | |
4956 | vfp_binop: | |
4957 | bfd_arm_vfp11_write_mask (destmask, fd); | |
4958 | regs[0] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */ | |
4959 | regs[1] = fm; | |
4960 | *numregs = 2; | |
4961 | break; | |
4962 | ||
4963 | case 15: /* extended opcode. */ | |
4964 | { | |
4965 | unsigned int extn = ((insn >> 15) & 0x1e) | |
4966 | | ((insn >> 7) & 1); | |
4967 | ||
4968 | switch (extn) | |
4969 | { | |
4970 | case 0: /* fcpy[sd]. */ | |
4971 | case 1: /* fabs[sd]. */ | |
4972 | case 2: /* fneg[sd]. */ | |
4973 | case 8: /* fcmp[sd]. */ | |
4974 | case 9: /* fcmpe[sd]. */ | |
4975 | case 10: /* fcmpz[sd]. */ | |
4976 | case 11: /* fcmpez[sd]. */ | |
4977 | case 16: /* fuito[sd]. */ | |
4978 | case 17: /* fsito[sd]. */ | |
4979 | case 24: /* ftoui[sd]. */ | |
4980 | case 25: /* ftouiz[sd]. */ | |
4981 | case 26: /* ftosi[sd]. */ | |
4982 | case 27: /* ftosiz[sd]. */ | |
4983 | /* These instructions will not bounce due to underflow. */ | |
4984 | *numregs = 0; | |
4985 | pipe = VFP11_FMAC; | |
4986 | break; | |
4987 | ||
4988 | case 3: /* fsqrt[sd]. */ | |
4989 | /* fsqrt cannot underflow, but it can (perhaps) overwrite | |
4990 | registers to cause the erratum in previous instructions. */ | |
4991 | bfd_arm_vfp11_write_mask (destmask, fd); | |
4992 | pipe = VFP11_DS; | |
4993 | break; | |
4994 | ||
4995 | case 15: /* fcvt{ds,sd}. */ | |
4996 | { | |
4997 | int rnum = 0; | |
4998 | ||
4999 | bfd_arm_vfp11_write_mask (destmask, fd); | |
5000 | ||
5001 | /* Only FCVTSD can underflow. */ | |
5002 | if ((insn & 0x100) != 0) | |
5003 | regs[rnum++] = fm; | |
5004 | ||
5005 | *numregs = rnum; | |
5006 | ||
5007 | pipe = VFP11_FMAC; | |
5008 | } | |
5009 | break; | |
5010 | ||
5011 | default: | |
5012 | return VFP11_BAD; | |
5013 | } | |
5014 | } | |
5015 | break; | |
5016 | ||
5017 | default: | |
5018 | return VFP11_BAD; | |
5019 | } | |
5020 | } | |
5021 | /* Two-register transfer. */ | |
5022 | else if ((insn & 0x0fe00ed0) == 0x0c400a10) | |
5023 | { | |
5024 | unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5); | |
906e58ca | 5025 | |
c7b8f16e JB |
5026 | if ((insn & 0x100000) == 0) |
5027 | { | |
5028 | if (is_double) | |
5029 | bfd_arm_vfp11_write_mask (destmask, fm); | |
5030 | else | |
5031 | { | |
5032 | bfd_arm_vfp11_write_mask (destmask, fm); | |
5033 | bfd_arm_vfp11_write_mask (destmask, fm + 1); | |
5034 | } | |
5035 | } | |
5036 | ||
5037 | pipe = VFP11_LS; | |
5038 | } | |
5039 | else if ((insn & 0x0e100e00) == 0x0c100a00) /* A load insn. */ | |
5040 | { | |
5041 | int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22); | |
5042 | unsigned int puw = ((insn >> 21) & 0x1) | (((insn >> 23) & 3) << 1); | |
906e58ca | 5043 | |
c7b8f16e JB |
5044 | switch (puw) |
5045 | { | |
5046 | case 0: /* Two-reg transfer. We should catch these above. */ | |
5047 | abort (); | |
906e58ca | 5048 | |
c7b8f16e JB |
5049 | case 2: /* fldm[sdx]. */ |
5050 | case 3: | |
5051 | case 5: | |
5052 | { | |
5053 | unsigned int i, offset = insn & 0xff; | |
5054 | ||
5055 | if (is_double) | |
5056 | offset >>= 1; | |
5057 | ||
5058 | for (i = fd; i < fd + offset; i++) | |
5059 | bfd_arm_vfp11_write_mask (destmask, i); | |
5060 | } | |
5061 | break; | |
906e58ca | 5062 | |
c7b8f16e JB |
5063 | case 4: /* fld[sd]. */ |
5064 | case 6: | |
5065 | bfd_arm_vfp11_write_mask (destmask, fd); | |
5066 | break; | |
906e58ca | 5067 | |
c7b8f16e JB |
5068 | default: |
5069 | return VFP11_BAD; | |
5070 | } | |
5071 | ||
5072 | pipe = VFP11_LS; | |
5073 | } | |
5074 | /* Single-register transfer. Note L==0. */ | |
5075 | else if ((insn & 0x0f100e10) == 0x0e000a10) | |
5076 | { | |
5077 | unsigned int opcode = (insn >> 21) & 7; | |
5078 | unsigned int fn = bfd_arm_vfp11_regno (insn, is_double, 16, 7); | |
5079 | ||
5080 | switch (opcode) | |
5081 | { | |
5082 | case 0: /* fmsr/fmdlr. */ | |
5083 | case 1: /* fmdhr. */ | |
5084 | /* Mark fmdhr and fmdlr as writing to the whole of the DP | |
5085 | destination register. I don't know if this is exactly right, | |
5086 | but it is the conservative choice. */ | |
5087 | bfd_arm_vfp11_write_mask (destmask, fn); | |
5088 | break; | |
5089 | ||
5090 | case 7: /* fmxr. */ | |
5091 | break; | |
5092 | } | |
5093 | ||
5094 | pipe = VFP11_LS; | |
5095 | } | |
5096 | ||
5097 | return pipe; | |
5098 | } | |
5099 | ||
5100 | ||
5101 | static int elf32_arm_compare_mapping (const void * a, const void * b); | |
5102 | ||
5103 | ||
5104 | /* Look for potentially-troublesome code sequences which might trigger the | |
5105 | VFP11 denormal/antidependency erratum. See, e.g., the ARM1136 errata sheet | |
5106 | (available from ARM) for details of the erratum. A short version is | |
5107 | described in ld.texinfo. */ | |
5108 | ||
5109 | bfd_boolean | |
5110 | bfd_elf32_arm_vfp11_erratum_scan (bfd *abfd, struct bfd_link_info *link_info) | |
5111 | { | |
5112 | asection *sec; | |
5113 | bfd_byte *contents = NULL; | |
5114 | int state = 0; | |
5115 | int regs[3], numregs = 0; | |
5116 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); | |
5117 | int use_vector = (globals->vfp11_fix == BFD_ARM_VFP11_FIX_VECTOR); | |
906e58ca | 5118 | |
c7b8f16e JB |
5119 | /* We use a simple FSM to match troublesome VFP11 instruction sequences. |
5120 | The states transition as follows: | |
906e58ca | 5121 | |
c7b8f16e JB |
5122 | 0 -> 1 (vector) or 0 -> 2 (scalar) |
5123 | A VFP FMAC-pipeline instruction has been seen. Fill | |
5124 | regs[0]..regs[numregs-1] with its input operands. Remember this | |
5125 | instruction in 'first_fmac'. | |
5126 | ||
5127 | 1 -> 2 | |
5128 | Any instruction, except for a VFP instruction which overwrites | |
5129 | regs[*]. | |
906e58ca | 5130 | |
c7b8f16e JB |
5131 | 1 -> 3 [ -> 0 ] or |
5132 | 2 -> 3 [ -> 0 ] | |
5133 | A VFP instruction has been seen which overwrites any of regs[*]. | |
5134 | We must make a veneer! Reset state to 0 before examining next | |
5135 | instruction. | |
906e58ca | 5136 | |
c7b8f16e JB |
5137 | 2 -> 0 |
5138 | If we fail to match anything in state 2, reset to state 0 and reset | |
5139 | the instruction pointer to the instruction after 'first_fmac'. | |
5140 | ||
5141 | If the VFP11 vector mode is in use, there must be at least two unrelated | |
5142 | instructions between anti-dependent VFP11 instructions to properly avoid | |
906e58ca | 5143 | triggering the erratum, hence the use of the extra state 1. */ |
c7b8f16e JB |
5144 | |
5145 | /* If we are only performing a partial link do not bother | |
5146 | to construct any glue. */ | |
5147 | if (link_info->relocatable) | |
5148 | return TRUE; | |
5149 | ||
0ffa91dd NC |
5150 | /* Skip if this bfd does not correspond to an ELF image. */ |
5151 | if (! is_arm_elf (abfd)) | |
5152 | return TRUE; | |
906e58ca | 5153 | |
c7b8f16e JB |
5154 | /* We should have chosen a fix type by the time we get here. */ |
5155 | BFD_ASSERT (globals->vfp11_fix != BFD_ARM_VFP11_FIX_DEFAULT); | |
5156 | ||
5157 | if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_NONE) | |
5158 | return TRUE; | |
2e6030b9 | 5159 | |
33a7ffc2 JM |
5160 | /* Skip this BFD if it corresponds to an executable or dynamic object. */ |
5161 | if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0) | |
5162 | return TRUE; | |
5163 | ||
c7b8f16e JB |
5164 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
5165 | { | |
5166 | unsigned int i, span, first_fmac = 0, veneer_of_insn = 0; | |
5167 | struct _arm_elf_section_data *sec_data; | |
5168 | ||
5169 | /* If we don't have executable progbits, we're not interested in this | |
5170 | section. Also skip if section is to be excluded. */ | |
5171 | if (elf_section_type (sec) != SHT_PROGBITS | |
5172 | || (elf_section_flags (sec) & SHF_EXECINSTR) == 0 | |
5173 | || (sec->flags & SEC_EXCLUDE) != 0 | |
33a7ffc2 JM |
5174 | || sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS |
5175 | || sec->output_section == bfd_abs_section_ptr | |
c7b8f16e JB |
5176 | || strcmp (sec->name, VFP11_ERRATUM_VENEER_SECTION_NAME) == 0) |
5177 | continue; | |
5178 | ||
5179 | sec_data = elf32_arm_section_data (sec); | |
906e58ca | 5180 | |
c7b8f16e JB |
5181 | if (sec_data->mapcount == 0) |
5182 | continue; | |
906e58ca | 5183 | |
c7b8f16e JB |
5184 | if (elf_section_data (sec)->this_hdr.contents != NULL) |
5185 | contents = elf_section_data (sec)->this_hdr.contents; | |
5186 | else if (! bfd_malloc_and_get_section (abfd, sec, &contents)) | |
5187 | goto error_return; | |
5188 | ||
5189 | qsort (sec_data->map, sec_data->mapcount, sizeof (elf32_arm_section_map), | |
5190 | elf32_arm_compare_mapping); | |
5191 | ||
5192 | for (span = 0; span < sec_data->mapcount; span++) | |
5193 | { | |
5194 | unsigned int span_start = sec_data->map[span].vma; | |
5195 | unsigned int span_end = (span == sec_data->mapcount - 1) | |
5196 | ? sec->size : sec_data->map[span + 1].vma; | |
5197 | char span_type = sec_data->map[span].type; | |
906e58ca | 5198 | |
c7b8f16e JB |
5199 | /* FIXME: Only ARM mode is supported at present. We may need to |
5200 | support Thumb-2 mode also at some point. */ | |
5201 | if (span_type != 'a') | |
5202 | continue; | |
5203 | ||
5204 | for (i = span_start; i < span_end;) | |
5205 | { | |
5206 | unsigned int next_i = i + 4; | |
5207 | unsigned int insn = bfd_big_endian (abfd) | |
5208 | ? (contents[i] << 24) | |
5209 | | (contents[i + 1] << 16) | |
5210 | | (contents[i + 2] << 8) | |
5211 | | contents[i + 3] | |
5212 | : (contents[i + 3] << 24) | |
5213 | | (contents[i + 2] << 16) | |
5214 | | (contents[i + 1] << 8) | |
5215 | | contents[i]; | |
5216 | unsigned int writemask = 0; | |
5217 | enum bfd_arm_vfp11_pipe pipe; | |
5218 | ||
5219 | switch (state) | |
5220 | { | |
5221 | case 0: | |
5222 | pipe = bfd_arm_vfp11_insn_decode (insn, &writemask, regs, | |
5223 | &numregs); | |
5224 | /* I'm assuming the VFP11 erratum can trigger with denorm | |
5225 | operands on either the FMAC or the DS pipeline. This might | |
5226 | lead to slightly overenthusiastic veneer insertion. */ | |
5227 | if (pipe == VFP11_FMAC || pipe == VFP11_DS) | |
5228 | { | |
5229 | state = use_vector ? 1 : 2; | |
5230 | first_fmac = i; | |
5231 | veneer_of_insn = insn; | |
5232 | } | |
5233 | break; | |
5234 | ||
5235 | case 1: | |
5236 | { | |
5237 | int other_regs[3], other_numregs; | |
5238 | pipe = bfd_arm_vfp11_insn_decode (insn, &writemask, | |
5239 | other_regs, | |
5240 | &other_numregs); | |
5241 | if (pipe != VFP11_BAD | |
5242 | && bfd_arm_vfp11_antidependency (writemask, regs, | |
5243 | numregs)) | |
5244 | state = 3; | |
5245 | else | |
5246 | state = 2; | |
5247 | } | |
5248 | break; | |
5249 | ||
5250 | case 2: | |
5251 | { | |
5252 | int other_regs[3], other_numregs; | |
5253 | pipe = bfd_arm_vfp11_insn_decode (insn, &writemask, | |
5254 | other_regs, | |
5255 | &other_numregs); | |
5256 | if (pipe != VFP11_BAD | |
5257 | && bfd_arm_vfp11_antidependency (writemask, regs, | |
5258 | numregs)) | |
5259 | state = 3; | |
5260 | else | |
5261 | { | |
5262 | state = 0; | |
5263 | next_i = first_fmac + 4; | |
5264 | } | |
5265 | } | |
5266 | break; | |
5267 | ||
5268 | case 3: | |
5269 | abort (); /* Should be unreachable. */ | |
5270 | } | |
5271 | ||
5272 | if (state == 3) | |
5273 | { | |
5274 | elf32_vfp11_erratum_list *newerr | |
5275 | = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list)); | |
5276 | int errcount; | |
5277 | ||
5278 | errcount = ++(elf32_arm_section_data (sec)->erratumcount); | |
5279 | ||
5280 | newerr->u.b.vfp_insn = veneer_of_insn; | |
5281 | ||
5282 | switch (span_type) | |
5283 | { | |
5284 | case 'a': | |
5285 | newerr->type = VFP11_ERRATUM_BRANCH_TO_ARM_VENEER; | |
5286 | break; | |
906e58ca | 5287 | |
c7b8f16e JB |
5288 | default: |
5289 | abort (); | |
5290 | } | |
5291 | ||
5292 | record_vfp11_erratum_veneer (link_info, newerr, abfd, sec, | |
5293 | first_fmac); | |
5294 | ||
5295 | newerr->vma = -1; | |
5296 | ||
5297 | newerr->next = sec_data->erratumlist; | |
5298 | sec_data->erratumlist = newerr; | |
5299 | ||
5300 | state = 0; | |
5301 | } | |
5302 | ||
5303 | i = next_i; | |
5304 | } | |
5305 | } | |
906e58ca | 5306 | |
c7b8f16e JB |
5307 | if (contents != NULL |
5308 | && elf_section_data (sec)->this_hdr.contents != contents) | |
5309 | free (contents); | |
5310 | contents = NULL; | |
5311 | } | |
5312 | ||
5313 | return TRUE; | |
5314 | ||
5315 | error_return: | |
5316 | if (contents != NULL | |
5317 | && elf_section_data (sec)->this_hdr.contents != contents) | |
5318 | free (contents); | |
906e58ca | 5319 | |
c7b8f16e JB |
5320 | return FALSE; |
5321 | } | |
5322 | ||
5323 | /* Find virtual-memory addresses for VFP11 erratum veneers and return locations | |
5324 | after sections have been laid out, using specially-named symbols. */ | |
5325 | ||
5326 | void | |
5327 | bfd_elf32_arm_vfp11_fix_veneer_locations (bfd *abfd, | |
5328 | struct bfd_link_info *link_info) | |
5329 | { | |
5330 | asection *sec; | |
5331 | struct elf32_arm_link_hash_table *globals; | |
5332 | char *tmp_name; | |
906e58ca | 5333 | |
c7b8f16e JB |
5334 | if (link_info->relocatable) |
5335 | return; | |
2e6030b9 MS |
5336 | |
5337 | /* Skip if this bfd does not correspond to an ELF image. */ | |
0ffa91dd | 5338 | if (! is_arm_elf (abfd)) |
2e6030b9 MS |
5339 | return; |
5340 | ||
c7b8f16e | 5341 | globals = elf32_arm_hash_table (link_info); |
906e58ca | 5342 | |
c7b8f16e JB |
5343 | tmp_name = bfd_malloc ((bfd_size_type) strlen |
5344 | (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10); | |
5345 | ||
5346 | for (sec = abfd->sections; sec != NULL; sec = sec->next) | |
5347 | { | |
5348 | struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec); | |
5349 | elf32_vfp11_erratum_list *errnode = sec_data->erratumlist; | |
906e58ca | 5350 | |
c7b8f16e JB |
5351 | for (; errnode != NULL; errnode = errnode->next) |
5352 | { | |
5353 | struct elf_link_hash_entry *myh; | |
5354 | bfd_vma vma; | |
5355 | ||
5356 | switch (errnode->type) | |
5357 | { | |
5358 | case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER: | |
5359 | case VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER: | |
5360 | /* Find veneer symbol. */ | |
5361 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME, | |
5362 | errnode->u.b.veneer->u.v.id); | |
5363 | ||
5364 | myh = elf_link_hash_lookup | |
5365 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); | |
5366 | ||
5367 | if (myh == NULL) | |
5368 | (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer " | |
5369 | "`%s'"), abfd, tmp_name); | |
5370 | ||
5371 | vma = myh->root.u.def.section->output_section->vma | |
5372 | + myh->root.u.def.section->output_offset | |
5373 | + myh->root.u.def.value; | |
5374 | ||
5375 | errnode->u.b.veneer->vma = vma; | |
5376 | break; | |
5377 | ||
5378 | case VFP11_ERRATUM_ARM_VENEER: | |
5379 | case VFP11_ERRATUM_THUMB_VENEER: | |
5380 | /* Find return location. */ | |
5381 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r", | |
5382 | errnode->u.v.id); | |
5383 | ||
5384 | myh = elf_link_hash_lookup | |
5385 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); | |
5386 | ||
5387 | if (myh == NULL) | |
5388 | (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer " | |
5389 | "`%s'"), abfd, tmp_name); | |
5390 | ||
5391 | vma = myh->root.u.def.section->output_section->vma | |
5392 | + myh->root.u.def.section->output_offset | |
5393 | + myh->root.u.def.value; | |
5394 | ||
5395 | errnode->u.v.branch->vma = vma; | |
5396 | break; | |
906e58ca | 5397 | |
c7b8f16e JB |
5398 | default: |
5399 | abort (); | |
5400 | } | |
5401 | } | |
5402 | } | |
906e58ca | 5403 | |
c7b8f16e JB |
5404 | free (tmp_name); |
5405 | } | |
5406 | ||
5407 | ||
eb043451 PB |
5408 | /* Set target relocation values needed during linking. */ |
5409 | ||
5410 | void | |
bf21ed78 MS |
5411 | bfd_elf32_arm_set_target_relocs (struct bfd *output_bfd, |
5412 | struct bfd_link_info *link_info, | |
eb043451 | 5413 | int target1_is_rel, |
319850b4 | 5414 | char * target2_type, |
33bfe774 | 5415 | int fix_v4bx, |
c7b8f16e | 5416 | int use_blx, |
bf21ed78 | 5417 | bfd_arm_vfp11_fix vfp11_fix, |
a9dc9481 JM |
5418 | int no_enum_warn, int no_wchar_warn, |
5419 | int pic_veneer) | |
eb043451 PB |
5420 | { |
5421 | struct elf32_arm_link_hash_table *globals; | |
5422 | ||
5423 | globals = elf32_arm_hash_table (link_info); | |
5424 | ||
5425 | globals->target1_is_rel = target1_is_rel; | |
5426 | if (strcmp (target2_type, "rel") == 0) | |
5427 | globals->target2_reloc = R_ARM_REL32; | |
eeac373a PB |
5428 | else if (strcmp (target2_type, "abs") == 0) |
5429 | globals->target2_reloc = R_ARM_ABS32; | |
eb043451 PB |
5430 | else if (strcmp (target2_type, "got-rel") == 0) |
5431 | globals->target2_reloc = R_ARM_GOT_PREL; | |
5432 | else | |
5433 | { | |
5434 | _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."), | |
5435 | target2_type); | |
5436 | } | |
319850b4 | 5437 | globals->fix_v4bx = fix_v4bx; |
33bfe774 | 5438 | globals->use_blx |= use_blx; |
c7b8f16e | 5439 | globals->vfp11_fix = vfp11_fix; |
27e55c4d | 5440 | globals->pic_veneer = pic_veneer; |
bf21ed78 | 5441 | |
0ffa91dd NC |
5442 | BFD_ASSERT (is_arm_elf (output_bfd)); |
5443 | elf_arm_tdata (output_bfd)->no_enum_size_warning = no_enum_warn; | |
a9dc9481 | 5444 | elf_arm_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn; |
eb043451 | 5445 | } |
eb043451 | 5446 | |
12a0a0fd | 5447 | /* Replace the target offset of a Thumb bl or b.w instruction. */ |
252b5132 | 5448 | |
12a0a0fd PB |
5449 | static void |
5450 | insert_thumb_branch (bfd *abfd, long int offset, bfd_byte *insn) | |
5451 | { | |
5452 | bfd_vma upper; | |
5453 | bfd_vma lower; | |
5454 | int reloc_sign; | |
5455 | ||
5456 | BFD_ASSERT ((offset & 1) == 0); | |
5457 | ||
5458 | upper = bfd_get_16 (abfd, insn); | |
5459 | lower = bfd_get_16 (abfd, insn + 2); | |
5460 | reloc_sign = (offset < 0) ? 1 : 0; | |
5461 | upper = (upper & ~(bfd_vma) 0x7ff) | |
5462 | | ((offset >> 12) & 0x3ff) | |
5463 | | (reloc_sign << 10); | |
906e58ca | 5464 | lower = (lower & ~(bfd_vma) 0x2fff) |
12a0a0fd PB |
5465 | | (((!((offset >> 23) & 1)) ^ reloc_sign) << 13) |
5466 | | (((!((offset >> 22) & 1)) ^ reloc_sign) << 11) | |
5467 | | ((offset >> 1) & 0x7ff); | |
5468 | bfd_put_16 (abfd, upper, insn); | |
5469 | bfd_put_16 (abfd, lower, insn + 2); | |
252b5132 RH |
5470 | } |
5471 | ||
9b485d32 NC |
5472 | /* Thumb code calling an ARM function. */ |
5473 | ||
252b5132 | 5474 | static int |
57e8b36a NC |
5475 | elf32_thumb_to_arm_stub (struct bfd_link_info * info, |
5476 | const char * name, | |
5477 | bfd * input_bfd, | |
5478 | bfd * output_bfd, | |
5479 | asection * input_section, | |
5480 | bfd_byte * hit_data, | |
5481 | asection * sym_sec, | |
5482 | bfd_vma offset, | |
5483 | bfd_signed_vma addend, | |
f2a9dd69 DJ |
5484 | bfd_vma val, |
5485 | char **error_message) | |
252b5132 | 5486 | { |
bcbdc74c | 5487 | asection * s = 0; |
dc810e39 | 5488 | bfd_vma my_offset; |
252b5132 | 5489 | long int ret_offset; |
bcbdc74c NC |
5490 | struct elf_link_hash_entry * myh; |
5491 | struct elf32_arm_link_hash_table * globals; | |
252b5132 | 5492 | |
f2a9dd69 | 5493 | myh = find_thumb_glue (info, name, error_message); |
252b5132 | 5494 | if (myh == NULL) |
b34976b6 | 5495 | return FALSE; |
252b5132 RH |
5496 | |
5497 | globals = elf32_arm_hash_table (info); | |
5498 | ||
5499 | BFD_ASSERT (globals != NULL); | |
5500 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
5501 | ||
5502 | my_offset = myh->root.u.def.value; | |
5503 | ||
5504 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
5505 | THUMB2ARM_GLUE_SECTION_NAME); | |
5506 | ||
5507 | BFD_ASSERT (s != NULL); | |
5508 | BFD_ASSERT (s->contents != NULL); | |
5509 | BFD_ASSERT (s->output_section != NULL); | |
5510 | ||
5511 | if ((my_offset & 0x01) == 0x01) | |
5512 | { | |
5513 | if (sym_sec != NULL | |
5514 | && sym_sec->owner != NULL | |
5515 | && !INTERWORK_FLAG (sym_sec->owner)) | |
5516 | { | |
8f615d07 | 5517 | (*_bfd_error_handler) |
d003868e AM |
5518 | (_("%B(%s): warning: interworking not enabled.\n" |
5519 | " first occurrence: %B: thumb call to arm"), | |
5520 | sym_sec->owner, input_bfd, name); | |
252b5132 | 5521 | |
b34976b6 | 5522 | return FALSE; |
252b5132 RH |
5523 | } |
5524 | ||
5525 | --my_offset; | |
5526 | myh->root.u.def.value = my_offset; | |
5527 | ||
52ab56c2 PB |
5528 | put_thumb_insn (globals, output_bfd, (bfd_vma) t2a1_bx_pc_insn, |
5529 | s->contents + my_offset); | |
252b5132 | 5530 | |
52ab56c2 PB |
5531 | put_thumb_insn (globals, output_bfd, (bfd_vma) t2a2_noop_insn, |
5532 | s->contents + my_offset + 2); | |
252b5132 RH |
5533 | |
5534 | ret_offset = | |
9b485d32 NC |
5535 | /* Address of destination of the stub. */ |
5536 | ((bfd_signed_vma) val) | |
252b5132 | 5537 | - ((bfd_signed_vma) |
57e8b36a NC |
5538 | /* Offset from the start of the current section |
5539 | to the start of the stubs. */ | |
9b485d32 NC |
5540 | (s->output_offset |
5541 | /* Offset of the start of this stub from the start of the stubs. */ | |
5542 | + my_offset | |
5543 | /* Address of the start of the current section. */ | |
5544 | + s->output_section->vma) | |
5545 | /* The branch instruction is 4 bytes into the stub. */ | |
5546 | + 4 | |
5547 | /* ARM branches work from the pc of the instruction + 8. */ | |
5548 | + 8); | |
252b5132 | 5549 | |
52ab56c2 PB |
5550 | put_arm_insn (globals, output_bfd, |
5551 | (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF), | |
5552 | s->contents + my_offset + 4); | |
252b5132 RH |
5553 | } |
5554 | ||
5555 | BFD_ASSERT (my_offset <= globals->thumb_glue_size); | |
5556 | ||
427bfd90 NC |
5557 | /* Now go back and fix up the original BL insn to point to here. */ |
5558 | ret_offset = | |
5559 | /* Address of where the stub is located. */ | |
5560 | (s->output_section->vma + s->output_offset + my_offset) | |
5561 | /* Address of where the BL is located. */ | |
57e8b36a NC |
5562 | - (input_section->output_section->vma + input_section->output_offset |
5563 | + offset) | |
427bfd90 NC |
5564 | /* Addend in the relocation. */ |
5565 | - addend | |
5566 | /* Biassing for PC-relative addressing. */ | |
5567 | - 8; | |
252b5132 | 5568 | |
12a0a0fd | 5569 | insert_thumb_branch (input_bfd, ret_offset, hit_data - input_section->vma); |
252b5132 | 5570 | |
b34976b6 | 5571 | return TRUE; |
252b5132 RH |
5572 | } |
5573 | ||
a4fd1a8e | 5574 | /* Populate an Arm to Thumb stub. Returns the stub symbol. */ |
9b485d32 | 5575 | |
a4fd1a8e PB |
5576 | static struct elf_link_hash_entry * |
5577 | elf32_arm_create_thumb_stub (struct bfd_link_info * info, | |
5578 | const char * name, | |
5579 | bfd * input_bfd, | |
5580 | bfd * output_bfd, | |
5581 | asection * sym_sec, | |
5582 | bfd_vma val, | |
8029a119 NC |
5583 | asection * s, |
5584 | char ** error_message) | |
252b5132 | 5585 | { |
dc810e39 | 5586 | bfd_vma my_offset; |
252b5132 | 5587 | long int ret_offset; |
bcbdc74c NC |
5588 | struct elf_link_hash_entry * myh; |
5589 | struct elf32_arm_link_hash_table * globals; | |
252b5132 | 5590 | |
f2a9dd69 | 5591 | myh = find_arm_glue (info, name, error_message); |
252b5132 | 5592 | if (myh == NULL) |
a4fd1a8e | 5593 | return NULL; |
252b5132 RH |
5594 | |
5595 | globals = elf32_arm_hash_table (info); | |
5596 | ||
5597 | BFD_ASSERT (globals != NULL); | |
5598 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
5599 | ||
5600 | my_offset = myh->root.u.def.value; | |
252b5132 RH |
5601 | |
5602 | if ((my_offset & 0x01) == 0x01) | |
5603 | { | |
5604 | if (sym_sec != NULL | |
5605 | && sym_sec->owner != NULL | |
5606 | && !INTERWORK_FLAG (sym_sec->owner)) | |
5607 | { | |
8f615d07 | 5608 | (*_bfd_error_handler) |
d003868e AM |
5609 | (_("%B(%s): warning: interworking not enabled.\n" |
5610 | " first occurrence: %B: arm call to thumb"), | |
5611 | sym_sec->owner, input_bfd, name); | |
252b5132 | 5612 | } |
9b485d32 | 5613 | |
252b5132 RH |
5614 | --my_offset; |
5615 | myh->root.u.def.value = my_offset; | |
5616 | ||
27e55c4d PB |
5617 | if (info->shared || globals->root.is_relocatable_executable |
5618 | || globals->pic_veneer) | |
8f6277f5 PB |
5619 | { |
5620 | /* For relocatable objects we can't use absolute addresses, | |
5621 | so construct the address from a relative offset. */ | |
5622 | /* TODO: If the offset is small it's probably worth | |
5623 | constructing the address with adds. */ | |
52ab56c2 PB |
5624 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t1p_ldr_insn, |
5625 | s->contents + my_offset); | |
5626 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t2p_add_pc_insn, | |
5627 | s->contents + my_offset + 4); | |
5628 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t3p_bx_r12_insn, | |
5629 | s->contents + my_offset + 8); | |
8f6277f5 PB |
5630 | /* Adjust the offset by 4 for the position of the add, |
5631 | and 8 for the pipeline offset. */ | |
5632 | ret_offset = (val - (s->output_offset | |
5633 | + s->output_section->vma | |
5634 | + my_offset + 12)) | |
5635 | | 1; | |
5636 | bfd_put_32 (output_bfd, ret_offset, | |
5637 | s->contents + my_offset + 12); | |
5638 | } | |
26079076 PB |
5639 | else if (globals->use_blx) |
5640 | { | |
5641 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t1v5_ldr_insn, | |
5642 | s->contents + my_offset); | |
5643 | ||
5644 | /* It's a thumb address. Add the low order bit. */ | |
5645 | bfd_put_32 (output_bfd, val | a2t2v5_func_addr_insn, | |
5646 | s->contents + my_offset + 4); | |
5647 | } | |
8f6277f5 PB |
5648 | else |
5649 | { | |
52ab56c2 PB |
5650 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t1_ldr_insn, |
5651 | s->contents + my_offset); | |
252b5132 | 5652 | |
52ab56c2 PB |
5653 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t2_bx_r12_insn, |
5654 | s->contents + my_offset + 4); | |
252b5132 | 5655 | |
8f6277f5 PB |
5656 | /* It's a thumb address. Add the low order bit. */ |
5657 | bfd_put_32 (output_bfd, val | a2t3_func_addr_insn, | |
5658 | s->contents + my_offset + 8); | |
8029a119 NC |
5659 | |
5660 | my_offset += 12; | |
8f6277f5 | 5661 | } |
252b5132 RH |
5662 | } |
5663 | ||
5664 | BFD_ASSERT (my_offset <= globals->arm_glue_size); | |
5665 | ||
a4fd1a8e PB |
5666 | return myh; |
5667 | } | |
5668 | ||
5669 | /* Arm code calling a Thumb function. */ | |
5670 | ||
5671 | static int | |
5672 | elf32_arm_to_thumb_stub (struct bfd_link_info * info, | |
5673 | const char * name, | |
5674 | bfd * input_bfd, | |
5675 | bfd * output_bfd, | |
5676 | asection * input_section, | |
5677 | bfd_byte * hit_data, | |
5678 | asection * sym_sec, | |
5679 | bfd_vma offset, | |
5680 | bfd_signed_vma addend, | |
f2a9dd69 DJ |
5681 | bfd_vma val, |
5682 | char **error_message) | |
a4fd1a8e PB |
5683 | { |
5684 | unsigned long int tmp; | |
5685 | bfd_vma my_offset; | |
5686 | asection * s; | |
5687 | long int ret_offset; | |
5688 | struct elf_link_hash_entry * myh; | |
5689 | struct elf32_arm_link_hash_table * globals; | |
5690 | ||
5691 | globals = elf32_arm_hash_table (info); | |
5692 | ||
5693 | BFD_ASSERT (globals != NULL); | |
5694 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
5695 | ||
5696 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
5697 | ARM2THUMB_GLUE_SECTION_NAME); | |
5698 | BFD_ASSERT (s != NULL); | |
5699 | BFD_ASSERT (s->contents != NULL); | |
5700 | BFD_ASSERT (s->output_section != NULL); | |
5701 | ||
5702 | myh = elf32_arm_create_thumb_stub (info, name, input_bfd, output_bfd, | |
f2a9dd69 | 5703 | sym_sec, val, s, error_message); |
a4fd1a8e PB |
5704 | if (!myh) |
5705 | return FALSE; | |
5706 | ||
5707 | my_offset = myh->root.u.def.value; | |
252b5132 RH |
5708 | tmp = bfd_get_32 (input_bfd, hit_data); |
5709 | tmp = tmp & 0xFF000000; | |
5710 | ||
9b485d32 | 5711 | /* Somehow these are both 4 too far, so subtract 8. */ |
dc810e39 AM |
5712 | ret_offset = (s->output_offset |
5713 | + my_offset | |
5714 | + s->output_section->vma | |
5715 | - (input_section->output_offset | |
5716 | + input_section->output_section->vma | |
5717 | + offset + addend) | |
5718 | - 8); | |
9a5aca8c | 5719 | |
252b5132 RH |
5720 | tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF); |
5721 | ||
dc810e39 | 5722 | bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma); |
252b5132 | 5723 | |
b34976b6 | 5724 | return TRUE; |
252b5132 RH |
5725 | } |
5726 | ||
a4fd1a8e PB |
5727 | /* Populate Arm stub for an exported Thumb function. */ |
5728 | ||
5729 | static bfd_boolean | |
5730 | elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry *h, void * inf) | |
5731 | { | |
5732 | struct bfd_link_info * info = (struct bfd_link_info *) inf; | |
5733 | asection * s; | |
5734 | struct elf_link_hash_entry * myh; | |
5735 | struct elf32_arm_link_hash_entry *eh; | |
5736 | struct elf32_arm_link_hash_table * globals; | |
5737 | asection *sec; | |
5738 | bfd_vma val; | |
f2a9dd69 | 5739 | char *error_message; |
a4fd1a8e | 5740 | |
906e58ca | 5741 | eh = elf32_arm_hash_entry (h); |
a4fd1a8e PB |
5742 | /* Allocate stubs for exported Thumb functions on v4t. */ |
5743 | if (eh->export_glue == NULL) | |
5744 | return TRUE; | |
5745 | ||
5746 | globals = elf32_arm_hash_table (info); | |
5747 | ||
5748 | BFD_ASSERT (globals != NULL); | |
5749 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
5750 | ||
5751 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
5752 | ARM2THUMB_GLUE_SECTION_NAME); | |
5753 | BFD_ASSERT (s != NULL); | |
5754 | BFD_ASSERT (s->contents != NULL); | |
5755 | BFD_ASSERT (s->output_section != NULL); | |
5756 | ||
5757 | sec = eh->export_glue->root.u.def.section; | |
0eaedd0e PB |
5758 | |
5759 | BFD_ASSERT (sec->output_section != NULL); | |
5760 | ||
a4fd1a8e PB |
5761 | val = eh->export_glue->root.u.def.value + sec->output_offset |
5762 | + sec->output_section->vma; | |
8029a119 | 5763 | |
a4fd1a8e PB |
5764 | myh = elf32_arm_create_thumb_stub (info, h->root.root.string, |
5765 | h->root.u.def.section->owner, | |
f2a9dd69 DJ |
5766 | globals->obfd, sec, val, s, |
5767 | &error_message); | |
a4fd1a8e PB |
5768 | BFD_ASSERT (myh); |
5769 | return TRUE; | |
5770 | } | |
5771 | ||
845b51d6 PB |
5772 | /* Populate ARMv4 BX veneers. Returns the absolute adress of the veneer. */ |
5773 | ||
5774 | static bfd_vma | |
5775 | elf32_arm_bx_glue (struct bfd_link_info * info, int reg) | |
5776 | { | |
5777 | bfd_byte *p; | |
5778 | bfd_vma glue_addr; | |
5779 | asection *s; | |
5780 | struct elf32_arm_link_hash_table *globals; | |
5781 | ||
5782 | globals = elf32_arm_hash_table (info); | |
5783 | ||
5784 | BFD_ASSERT (globals != NULL); | |
5785 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
5786 | ||
5787 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
5788 | ARM_BX_GLUE_SECTION_NAME); | |
5789 | BFD_ASSERT (s != NULL); | |
5790 | BFD_ASSERT (s->contents != NULL); | |
5791 | BFD_ASSERT (s->output_section != NULL); | |
5792 | ||
5793 | BFD_ASSERT (globals->bx_glue_offset[reg] & 2); | |
5794 | ||
5795 | glue_addr = globals->bx_glue_offset[reg] & ~(bfd_vma)3; | |
5796 | ||
5797 | if ((globals->bx_glue_offset[reg] & 1) == 0) | |
5798 | { | |
5799 | p = s->contents + glue_addr; | |
5800 | bfd_put_32 (globals->obfd, armbx1_tst_insn + (reg << 16), p); | |
5801 | bfd_put_32 (globals->obfd, armbx2_moveq_insn + reg, p + 4); | |
5802 | bfd_put_32 (globals->obfd, armbx3_bx_insn + reg, p + 8); | |
5803 | globals->bx_glue_offset[reg] |= 1; | |
5804 | } | |
5805 | ||
5806 | return glue_addr + s->output_section->vma + s->output_offset; | |
5807 | } | |
5808 | ||
a4fd1a8e PB |
5809 | /* Generate Arm stubs for exported Thumb symbols. */ |
5810 | static void | |
906e58ca | 5811 | elf32_arm_begin_write_processing (bfd *abfd ATTRIBUTE_UNUSED, |
a4fd1a8e PB |
5812 | struct bfd_link_info *link_info) |
5813 | { | |
5814 | struct elf32_arm_link_hash_table * globals; | |
5815 | ||
8029a119 NC |
5816 | if (link_info == NULL) |
5817 | /* Ignore this if we are not called by the ELF backend linker. */ | |
a4fd1a8e PB |
5818 | return; |
5819 | ||
5820 | globals = elf32_arm_hash_table (link_info); | |
84c08195 PB |
5821 | /* If blx is available then exported Thumb symbols are OK and there is |
5822 | nothing to do. */ | |
a4fd1a8e PB |
5823 | if (globals->use_blx) |
5824 | return; | |
5825 | ||
5826 | elf_link_hash_traverse (&globals->root, elf32_arm_to_thumb_export_stub, | |
5827 | link_info); | |
5828 | } | |
5829 | ||
eb043451 PB |
5830 | /* Some relocations map to different relocations depending on the |
5831 | target. Return the real relocation. */ | |
8029a119 | 5832 | |
eb043451 PB |
5833 | static int |
5834 | arm_real_reloc_type (struct elf32_arm_link_hash_table * globals, | |
5835 | int r_type) | |
5836 | { | |
5837 | switch (r_type) | |
5838 | { | |
5839 | case R_ARM_TARGET1: | |
5840 | if (globals->target1_is_rel) | |
5841 | return R_ARM_REL32; | |
5842 | else | |
5843 | return R_ARM_ABS32; | |
5844 | ||
5845 | case R_ARM_TARGET2: | |
5846 | return globals->target2_reloc; | |
5847 | ||
5848 | default: | |
5849 | return r_type; | |
5850 | } | |
5851 | } | |
eb043451 | 5852 | |
ba93b8ac DJ |
5853 | /* Return the base VMA address which should be subtracted from real addresses |
5854 | when resolving @dtpoff relocation. | |
5855 | This is PT_TLS segment p_vaddr. */ | |
5856 | ||
5857 | static bfd_vma | |
5858 | dtpoff_base (struct bfd_link_info *info) | |
5859 | { | |
5860 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
5861 | if (elf_hash_table (info)->tls_sec == NULL) | |
5862 | return 0; | |
5863 | return elf_hash_table (info)->tls_sec->vma; | |
5864 | } | |
5865 | ||
5866 | /* Return the relocation value for @tpoff relocation | |
5867 | if STT_TLS virtual address is ADDRESS. */ | |
5868 | ||
5869 | static bfd_vma | |
5870 | tpoff (struct bfd_link_info *info, bfd_vma address) | |
5871 | { | |
5872 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
5873 | bfd_vma base; | |
5874 | ||
5875 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
5876 | if (htab->tls_sec == NULL) | |
5877 | return 0; | |
5878 | base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power); | |
5879 | return address - htab->tls_sec->vma + base; | |
5880 | } | |
5881 | ||
00a97672 RS |
5882 | /* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA. |
5883 | VALUE is the relocation value. */ | |
5884 | ||
5885 | static bfd_reloc_status_type | |
5886 | elf32_arm_abs12_reloc (bfd *abfd, void *data, bfd_vma value) | |
5887 | { | |
5888 | if (value > 0xfff) | |
5889 | return bfd_reloc_overflow; | |
5890 | ||
5891 | value |= bfd_get_32 (abfd, data) & 0xfffff000; | |
5892 | bfd_put_32 (abfd, value, data); | |
5893 | return bfd_reloc_ok; | |
5894 | } | |
5895 | ||
4962c51a MS |
5896 | /* For a given value of n, calculate the value of G_n as required to |
5897 | deal with group relocations. We return it in the form of an | |
5898 | encoded constant-and-rotation, together with the final residual. If n is | |
5899 | specified as less than zero, then final_residual is filled with the | |
5900 | input value and no further action is performed. */ | |
5901 | ||
5902 | static bfd_vma | |
5903 | calculate_group_reloc_mask (bfd_vma value, int n, bfd_vma *final_residual) | |
5904 | { | |
5905 | int current_n; | |
5906 | bfd_vma g_n; | |
5907 | bfd_vma encoded_g_n = 0; | |
5908 | bfd_vma residual = value; /* Also known as Y_n. */ | |
5909 | ||
5910 | for (current_n = 0; current_n <= n; current_n++) | |
5911 | { | |
5912 | int shift; | |
5913 | ||
5914 | /* Calculate which part of the value to mask. */ | |
5915 | if (residual == 0) | |
5916 | shift = 0; | |
5917 | else | |
5918 | { | |
5919 | int msb; | |
5920 | ||
5921 | /* Determine the most significant bit in the residual and | |
5922 | align the resulting value to a 2-bit boundary. */ | |
5923 | for (msb = 30; msb >= 0; msb -= 2) | |
5924 | if (residual & (3 << msb)) | |
5925 | break; | |
5926 | ||
5927 | /* The desired shift is now (msb - 6), or zero, whichever | |
5928 | is the greater. */ | |
5929 | shift = msb - 6; | |
5930 | if (shift < 0) | |
5931 | shift = 0; | |
5932 | } | |
5933 | ||
5934 | /* Calculate g_n in 32-bit as well as encoded constant+rotation form. */ | |
5935 | g_n = residual & (0xff << shift); | |
5936 | encoded_g_n = (g_n >> shift) | |
5937 | | ((g_n <= 0xff ? 0 : (32 - shift) / 2) << 8); | |
5938 | ||
5939 | /* Calculate the residual for the next time around. */ | |
5940 | residual &= ~g_n; | |
5941 | } | |
5942 | ||
5943 | *final_residual = residual; | |
5944 | ||
5945 | return encoded_g_n; | |
5946 | } | |
5947 | ||
5948 | /* Given an ARM instruction, determine whether it is an ADD or a SUB. | |
5949 | Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */ | |
906e58ca | 5950 | |
4962c51a | 5951 | static int |
906e58ca | 5952 | identify_add_or_sub (bfd_vma insn) |
4962c51a MS |
5953 | { |
5954 | int opcode = insn & 0x1e00000; | |
5955 | ||
5956 | if (opcode == 1 << 23) /* ADD */ | |
5957 | return 1; | |
5958 | ||
5959 | if (opcode == 1 << 22) /* SUB */ | |
5960 | return -1; | |
5961 | ||
5962 | return 0; | |
5963 | } | |
5964 | ||
252b5132 | 5965 | /* Perform a relocation as part of a final link. */ |
9b485d32 | 5966 | |
252b5132 | 5967 | static bfd_reloc_status_type |
57e8b36a NC |
5968 | elf32_arm_final_link_relocate (reloc_howto_type * howto, |
5969 | bfd * input_bfd, | |
5970 | bfd * output_bfd, | |
5971 | asection * input_section, | |
5972 | bfd_byte * contents, | |
5973 | Elf_Internal_Rela * rel, | |
5974 | bfd_vma value, | |
5975 | struct bfd_link_info * info, | |
5976 | asection * sym_sec, | |
5977 | const char * sym_name, | |
5978 | int sym_flags, | |
0945cdfd | 5979 | struct elf_link_hash_entry * h, |
f2a9dd69 | 5980 | bfd_boolean * unresolved_reloc_p, |
8029a119 | 5981 | char ** error_message) |
252b5132 RH |
5982 | { |
5983 | unsigned long r_type = howto->type; | |
5984 | unsigned long r_symndx; | |
5985 | bfd_byte * hit_data = contents + rel->r_offset; | |
5986 | bfd * dynobj = NULL; | |
5987 | Elf_Internal_Shdr * symtab_hdr; | |
5988 | struct elf_link_hash_entry ** sym_hashes; | |
5989 | bfd_vma * local_got_offsets; | |
5990 | asection * sgot = NULL; | |
5991 | asection * splt = NULL; | |
5992 | asection * sreloc = NULL; | |
252b5132 | 5993 | bfd_vma addend; |
ba96a88f NC |
5994 | bfd_signed_vma signed_addend; |
5995 | struct elf32_arm_link_hash_table * globals; | |
f21f3fe0 | 5996 | |
9c504268 PB |
5997 | globals = elf32_arm_hash_table (info); |
5998 | ||
0ffa91dd NC |
5999 | BFD_ASSERT (is_arm_elf (input_bfd)); |
6000 | ||
6001 | /* Some relocation types map to different relocations depending on the | |
9c504268 | 6002 | target. We pick the right one here. */ |
eb043451 PB |
6003 | r_type = arm_real_reloc_type (globals, r_type); |
6004 | if (r_type != howto->type) | |
6005 | howto = elf32_arm_howto_from_type (r_type); | |
9c504268 | 6006 | |
cac15327 NC |
6007 | /* If the start address has been set, then set the EF_ARM_HASENTRY |
6008 | flag. Setting this more than once is redundant, but the cost is | |
6009 | not too high, and it keeps the code simple. | |
99e4ae17 | 6010 | |
cac15327 NC |
6011 | The test is done here, rather than somewhere else, because the |
6012 | start address is only set just before the final link commences. | |
6013 | ||
6014 | Note - if the user deliberately sets a start address of 0, the | |
6015 | flag will not be set. */ | |
6016 | if (bfd_get_start_address (output_bfd) != 0) | |
6017 | elf_elfheader (output_bfd)->e_flags |= EF_ARM_HASENTRY; | |
99e4ae17 | 6018 | |
252b5132 RH |
6019 | dynobj = elf_hash_table (info)->dynobj; |
6020 | if (dynobj) | |
6021 | { | |
6022 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
6023 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
6024 | } | |
0ffa91dd | 6025 | symtab_hdr = & elf_symtab_hdr (input_bfd); |
252b5132 RH |
6026 | sym_hashes = elf_sym_hashes (input_bfd); |
6027 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
6028 | r_symndx = ELF32_R_SYM (rel->r_info); | |
6029 | ||
4e7fd91e | 6030 | if (globals->use_rel) |
ba96a88f | 6031 | { |
4e7fd91e PB |
6032 | addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask; |
6033 | ||
6034 | if (addend & ((howto->src_mask + 1) >> 1)) | |
6035 | { | |
6036 | signed_addend = -1; | |
6037 | signed_addend &= ~ howto->src_mask; | |
6038 | signed_addend |= addend; | |
6039 | } | |
6040 | else | |
6041 | signed_addend = addend; | |
ba96a88f NC |
6042 | } |
6043 | else | |
4e7fd91e | 6044 | addend = signed_addend = rel->r_addend; |
f21f3fe0 | 6045 | |
252b5132 RH |
6046 | switch (r_type) |
6047 | { | |
6048 | case R_ARM_NONE: | |
28a094c2 DJ |
6049 | /* We don't need to find a value for this symbol. It's just a |
6050 | marker. */ | |
6051 | *unresolved_reloc_p = FALSE; | |
252b5132 RH |
6052 | return bfd_reloc_ok; |
6053 | ||
00a97672 RS |
6054 | case R_ARM_ABS12: |
6055 | if (!globals->vxworks_p) | |
6056 | return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend); | |
6057 | ||
252b5132 RH |
6058 | case R_ARM_PC24: |
6059 | case R_ARM_ABS32: | |
bb224fc3 | 6060 | case R_ARM_ABS32_NOI: |
252b5132 | 6061 | case R_ARM_REL32: |
bb224fc3 | 6062 | case R_ARM_REL32_NOI: |
5b5bb741 PB |
6063 | case R_ARM_CALL: |
6064 | case R_ARM_JUMP24: | |
dfc5f959 | 6065 | case R_ARM_XPC25: |
eb043451 | 6066 | case R_ARM_PREL31: |
7359ea65 | 6067 | case R_ARM_PLT32: |
7359ea65 DJ |
6068 | /* Handle relocations which should use the PLT entry. ABS32/REL32 |
6069 | will use the symbol's value, which may point to a PLT entry, but we | |
6070 | don't need to handle that here. If we created a PLT entry, all | |
5fa9e92f CL |
6071 | branches in this object should go to it, except if the PLT is too |
6072 | far away, in which case a long branch stub should be inserted. */ | |
bb224fc3 | 6073 | if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32 |
5fa9e92f | 6074 | && r_type != R_ARM_ABS32_NOI && r_type != R_ARM_REL32_NOI |
155d87d7 CL |
6075 | && r_type != R_ARM_CALL |
6076 | && r_type != R_ARM_JUMP24 | |
6077 | && r_type != R_ARM_PLT32) | |
7359ea65 | 6078 | && h != NULL |
c84cd8ee | 6079 | && splt != NULL |
7359ea65 DJ |
6080 | && h->plt.offset != (bfd_vma) -1) |
6081 | { | |
c84cd8ee DJ |
6082 | /* If we've created a .plt section, and assigned a PLT entry to |
6083 | this function, it should not be known to bind locally. If | |
6084 | it were, we would have cleared the PLT entry. */ | |
7359ea65 DJ |
6085 | BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info, h)); |
6086 | ||
6087 | value = (splt->output_section->vma | |
6088 | + splt->output_offset | |
6089 | + h->plt.offset); | |
0945cdfd | 6090 | *unresolved_reloc_p = FALSE; |
7359ea65 DJ |
6091 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
6092 | contents, rel->r_offset, value, | |
00a97672 | 6093 | rel->r_addend); |
7359ea65 DJ |
6094 | } |
6095 | ||
67687978 PB |
6096 | /* When generating a shared object or relocatable executable, these |
6097 | relocations are copied into the output file to be resolved at | |
6098 | run time. */ | |
6099 | if ((info->shared || globals->root.is_relocatable_executable) | |
7359ea65 | 6100 | && (input_section->flags & SEC_ALLOC) |
3348747a NS |
6101 | && !(elf32_arm_hash_table (info)->vxworks_p |
6102 | && strcmp (input_section->output_section->name, | |
6103 | ".tls_vars") == 0) | |
bb224fc3 | 6104 | && ((r_type != R_ARM_REL32 && r_type != R_ARM_REL32_NOI) |
ee06dc07 | 6105 | || !SYMBOL_CALLS_LOCAL (info, h)) |
7359ea65 DJ |
6106 | && (h == NULL |
6107 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6108 | || h->root.type != bfd_link_hash_undefweak) | |
6109 | && r_type != R_ARM_PC24 | |
5b5bb741 PB |
6110 | && r_type != R_ARM_CALL |
6111 | && r_type != R_ARM_JUMP24 | |
ee06dc07 | 6112 | && r_type != R_ARM_PREL31 |
7359ea65 | 6113 | && r_type != R_ARM_PLT32) |
252b5132 | 6114 | { |
947216bf AM |
6115 | Elf_Internal_Rela outrel; |
6116 | bfd_byte *loc; | |
b34976b6 | 6117 | bfd_boolean skip, relocate; |
f21f3fe0 | 6118 | |
0945cdfd DJ |
6119 | *unresolved_reloc_p = FALSE; |
6120 | ||
252b5132 RH |
6121 | if (sreloc == NULL) |
6122 | { | |
83bac4b0 NC |
6123 | sreloc = _bfd_elf_get_dynamic_reloc_section (input_bfd, input_section, |
6124 | ! globals->use_rel); | |
f21f3fe0 | 6125 | |
83bac4b0 | 6126 | if (sreloc == NULL) |
252b5132 | 6127 | return bfd_reloc_notsupported; |
252b5132 | 6128 | } |
f21f3fe0 | 6129 | |
b34976b6 AM |
6130 | skip = FALSE; |
6131 | relocate = FALSE; | |
f21f3fe0 | 6132 | |
00a97672 | 6133 | outrel.r_addend = addend; |
c629eae0 JJ |
6134 | outrel.r_offset = |
6135 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
6136 | rel->r_offset); | |
6137 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 6138 | skip = TRUE; |
0bb2d96a | 6139 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 6140 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
6141 | outrel.r_offset += (input_section->output_section->vma |
6142 | + input_section->output_offset); | |
f21f3fe0 | 6143 | |
252b5132 | 6144 | if (skip) |
0bb2d96a | 6145 | memset (&outrel, 0, sizeof outrel); |
5e681ec4 PB |
6146 | else if (h != NULL |
6147 | && h->dynindx != -1 | |
7359ea65 | 6148 | && (!info->shared |
5e681ec4 | 6149 | || !info->symbolic |
f5385ebf | 6150 | || !h->def_regular)) |
5e681ec4 | 6151 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
252b5132 RH |
6152 | else |
6153 | { | |
a16385dc MM |
6154 | int symbol; |
6155 | ||
5e681ec4 | 6156 | /* This symbol is local, or marked to become local. */ |
b7693d02 DJ |
6157 | if (sym_flags == STT_ARM_TFUNC) |
6158 | value |= 1; | |
a16385dc | 6159 | if (globals->symbian_p) |
6366ff1e | 6160 | { |
74541ad4 AM |
6161 | asection *osec; |
6162 | ||
6366ff1e MM |
6163 | /* On Symbian OS, the data segment and text segement |
6164 | can be relocated independently. Therefore, we | |
6165 | must indicate the segment to which this | |
6166 | relocation is relative. The BPABI allows us to | |
6167 | use any symbol in the right segment; we just use | |
6168 | the section symbol as it is convenient. (We | |
6169 | cannot use the symbol given by "h" directly as it | |
74541ad4 AM |
6170 | will not appear in the dynamic symbol table.) |
6171 | ||
6172 | Note that the dynamic linker ignores the section | |
6173 | symbol value, so we don't subtract osec->vma | |
6174 | from the emitted reloc addend. */ | |
10dbd1f3 | 6175 | if (sym_sec) |
74541ad4 | 6176 | osec = sym_sec->output_section; |
10dbd1f3 | 6177 | else |
74541ad4 AM |
6178 | osec = input_section->output_section; |
6179 | symbol = elf_section_data (osec)->dynindx; | |
6180 | if (symbol == 0) | |
6181 | { | |
6182 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
6183 | ||
6184 | if ((osec->flags & SEC_READONLY) == 0 | |
6185 | && htab->data_index_section != NULL) | |
6186 | osec = htab->data_index_section; | |
6187 | else | |
6188 | osec = htab->text_index_section; | |
6189 | symbol = elf_section_data (osec)->dynindx; | |
6190 | } | |
6366ff1e MM |
6191 | BFD_ASSERT (symbol != 0); |
6192 | } | |
a16385dc MM |
6193 | else |
6194 | /* On SVR4-ish systems, the dynamic loader cannot | |
6195 | relocate the text and data segments independently, | |
6196 | so the symbol does not matter. */ | |
6197 | symbol = 0; | |
6198 | outrel.r_info = ELF32_R_INFO (symbol, R_ARM_RELATIVE); | |
00a97672 RS |
6199 | if (globals->use_rel) |
6200 | relocate = TRUE; | |
6201 | else | |
6202 | outrel.r_addend += value; | |
252b5132 | 6203 | } |
f21f3fe0 | 6204 | |
947216bf | 6205 | loc = sreloc->contents; |
00a97672 RS |
6206 | loc += sreloc->reloc_count++ * RELOC_SIZE (globals); |
6207 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
9a5aca8c | 6208 | |
f21f3fe0 | 6209 | /* If this reloc is against an external symbol, we do not want to |
252b5132 | 6210 | fiddle with the addend. Otherwise, we need to include the symbol |
9b485d32 | 6211 | value so that it becomes an addend for the dynamic reloc. */ |
252b5132 RH |
6212 | if (! relocate) |
6213 | return bfd_reloc_ok; | |
9a5aca8c | 6214 | |
f21f3fe0 | 6215 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
252b5132 RH |
6216 | contents, rel->r_offset, value, |
6217 | (bfd_vma) 0); | |
6218 | } | |
6219 | else switch (r_type) | |
6220 | { | |
00a97672 RS |
6221 | case R_ARM_ABS12: |
6222 | return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend); | |
6223 | ||
dfc5f959 | 6224 | case R_ARM_XPC25: /* Arm BLX instruction. */ |
5b5bb741 PB |
6225 | case R_ARM_CALL: |
6226 | case R_ARM_JUMP24: | |
8029a119 | 6227 | case R_ARM_PC24: /* Arm B/BL instruction. */ |
7359ea65 | 6228 | case R_ARM_PLT32: |
906e58ca NC |
6229 | { |
6230 | bfd_vma from; | |
6231 | bfd_signed_vma branch_offset; | |
6232 | struct elf32_arm_stub_hash_entry *stub_entry = NULL; | |
6233 | ||
dfc5f959 | 6234 | if (r_type == R_ARM_XPC25) |
252b5132 | 6235 | { |
dfc5f959 NC |
6236 | /* Check for Arm calling Arm function. */ |
6237 | /* FIXME: Should we translate the instruction into a BL | |
6238 | instruction instead ? */ | |
6239 | if (sym_flags != STT_ARM_TFUNC) | |
d003868e AM |
6240 | (*_bfd_error_handler) |
6241 | (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."), | |
6242 | input_bfd, | |
6243 | h ? h->root.root.string : "(local)"); | |
dfc5f959 | 6244 | } |
155d87d7 | 6245 | else if (r_type == R_ARM_PC24) |
dfc5f959 NC |
6246 | { |
6247 | /* Check for Arm calling Thumb function. */ | |
6248 | if (sym_flags == STT_ARM_TFUNC) | |
6249 | { | |
f2a9dd69 DJ |
6250 | if (elf32_arm_to_thumb_stub (info, sym_name, input_bfd, |
6251 | output_bfd, input_section, | |
6252 | hit_data, sym_sec, rel->r_offset, | |
6253 | signed_addend, value, | |
6254 | error_message)) | |
6255 | return bfd_reloc_ok; | |
6256 | else | |
6257 | return bfd_reloc_dangerous; | |
dfc5f959 | 6258 | } |
252b5132 | 6259 | } |
ba96a88f | 6260 | |
906e58ca | 6261 | /* Check if a stub has to be inserted because the |
8029a119 | 6262 | destination is too far or we are changing mode. */ |
155d87d7 CL |
6263 | if ( r_type == R_ARM_CALL |
6264 | || r_type == R_ARM_JUMP24 | |
6265 | || r_type == R_ARM_PLT32) | |
906e58ca | 6266 | { |
5fa9e92f CL |
6267 | /* If the call goes through a PLT entry, make sure to |
6268 | check distance to the right destination address. */ | |
6269 | if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1) | |
6270 | { | |
6271 | value = (splt->output_section->vma | |
6272 | + splt->output_offset | |
6273 | + h->plt.offset); | |
6274 | *unresolved_reloc_p = FALSE; | |
6275 | } | |
6276 | ||
6277 | from = (input_section->output_section->vma | |
6278 | + input_section->output_offset | |
6279 | + rel->r_offset); | |
6280 | branch_offset = (bfd_signed_vma)(value - from); | |
6281 | ||
906e58ca NC |
6282 | if (branch_offset > ARM_MAX_FWD_BRANCH_OFFSET |
6283 | || branch_offset < ARM_MAX_BWD_BRANCH_OFFSET | |
155d87d7 CL |
6284 | || ((sym_flags == STT_ARM_TFUNC) |
6285 | && (((r_type == R_ARM_CALL) && !globals->use_blx) | |
6286 | || (r_type == R_ARM_JUMP24) | |
6287 | || (r_type == R_ARM_PLT32) )) | |
6288 | ) | |
906e58ca NC |
6289 | { |
6290 | /* The target is out of reach, so redirect the | |
6291 | branch to the local stub for this function. */ | |
6292 | ||
6293 | stub_entry = elf32_arm_get_stub_entry (input_section, | |
6294 | sym_sec, h, | |
6295 | rel, globals); | |
6296 | if (stub_entry != NULL) | |
6297 | value = (stub_entry->stub_offset | |
6298 | + stub_entry->stub_sec->output_offset | |
6299 | + stub_entry->stub_sec->output_section->vma); | |
6300 | } | |
6301 | } | |
6302 | ||
dea514f5 PB |
6303 | /* The ARM ELF ABI says that this reloc is computed as: S - P + A |
6304 | where: | |
6305 | S is the address of the symbol in the relocation. | |
6306 | P is address of the instruction being relocated. | |
6307 | A is the addend (extracted from the instruction) in bytes. | |
6308 | ||
6309 | S is held in 'value'. | |
6310 | P is the base address of the section containing the | |
6311 | instruction plus the offset of the reloc into that | |
6312 | section, ie: | |
6313 | (input_section->output_section->vma + | |
6314 | input_section->output_offset + | |
6315 | rel->r_offset). | |
6316 | A is the addend, converted into bytes, ie: | |
6317 | (signed_addend * 4) | |
6318 | ||
6319 | Note: None of these operations have knowledge of the pipeline | |
6320 | size of the processor, thus it is up to the assembler to | |
6321 | encode this information into the addend. */ | |
6322 | value -= (input_section->output_section->vma | |
6323 | + input_section->output_offset); | |
6324 | value -= rel->r_offset; | |
4e7fd91e PB |
6325 | if (globals->use_rel) |
6326 | value += (signed_addend << howto->size); | |
6327 | else | |
6328 | /* RELA addends do not have to be adjusted by howto->size. */ | |
6329 | value += signed_addend; | |
23080146 | 6330 | |
dcb5e6e6 NC |
6331 | signed_addend = value; |
6332 | signed_addend >>= howto->rightshift; | |
9a5aca8c | 6333 | |
5ab79981 | 6334 | /* A branch to an undefined weak symbol is turned into a jump to |
82b5c97a CL |
6335 | the next instruction unless a PLT entry will be created. */ |
6336 | if (h && h->root.type == bfd_link_hash_undefweak | |
6337 | && !(splt != NULL && h->plt.offset != (bfd_vma) -1)) | |
5ab79981 PB |
6338 | { |
6339 | value = (bfd_get_32 (input_bfd, hit_data) & 0xf0000000) | |
6340 | | 0x0affffff; | |
6341 | } | |
6342 | else | |
59f2c4e7 | 6343 | { |
9b485d32 | 6344 | /* Perform a signed range check. */ |
dcb5e6e6 | 6345 | if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1)) |
59f2c4e7 NC |
6346 | || signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1))) |
6347 | return bfd_reloc_overflow; | |
9a5aca8c | 6348 | |
5ab79981 | 6349 | addend = (value & 2); |
39b41c9c | 6350 | |
5ab79981 PB |
6351 | value = (signed_addend & howto->dst_mask) |
6352 | | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask)); | |
39b41c9c | 6353 | |
5ab79981 PB |
6354 | if (r_type == R_ARM_CALL) |
6355 | { | |
155d87d7 CL |
6356 | /* Set the H bit in the BLX instruction. */ |
6357 | if (sym_flags == STT_ARM_TFUNC) | |
6358 | { | |
6359 | if (addend) | |
6360 | value |= (1 << 24); | |
6361 | else | |
6362 | value &= ~(bfd_vma)(1 << 24); | |
6363 | } | |
6364 | ||
5ab79981 | 6365 | /* Select the correct instruction (BL or BLX). */ |
906e58ca | 6366 | /* Only if we are not handling a BL to a stub. In this |
8029a119 | 6367 | case, mode switching is performed by the stub. */ |
906e58ca | 6368 | if (sym_flags == STT_ARM_TFUNC && !stub_entry) |
5ab79981 PB |
6369 | value |= (1 << 28); |
6370 | else | |
6371 | { | |
6372 | value &= ~(bfd_vma)(1 << 28); | |
6373 | value |= (1 << 24); | |
6374 | } | |
39b41c9c PB |
6375 | } |
6376 | } | |
906e58ca | 6377 | } |
252b5132 | 6378 | break; |
f21f3fe0 | 6379 | |
252b5132 RH |
6380 | case R_ARM_ABS32: |
6381 | value += addend; | |
6382 | if (sym_flags == STT_ARM_TFUNC) | |
6383 | value |= 1; | |
6384 | break; | |
f21f3fe0 | 6385 | |
bb224fc3 MS |
6386 | case R_ARM_ABS32_NOI: |
6387 | value += addend; | |
6388 | break; | |
6389 | ||
252b5132 | 6390 | case R_ARM_REL32: |
a8bc6c78 PB |
6391 | value += addend; |
6392 | if (sym_flags == STT_ARM_TFUNC) | |
6393 | value |= 1; | |
252b5132 | 6394 | value -= (input_section->output_section->vma |
62efb346 | 6395 | + input_section->output_offset + rel->r_offset); |
252b5132 | 6396 | break; |
eb043451 | 6397 | |
bb224fc3 MS |
6398 | case R_ARM_REL32_NOI: |
6399 | value += addend; | |
6400 | value -= (input_section->output_section->vma | |
6401 | + input_section->output_offset + rel->r_offset); | |
6402 | break; | |
6403 | ||
eb043451 PB |
6404 | case R_ARM_PREL31: |
6405 | value -= (input_section->output_section->vma | |
6406 | + input_section->output_offset + rel->r_offset); | |
6407 | value += signed_addend; | |
6408 | if (! h || h->root.type != bfd_link_hash_undefweak) | |
6409 | { | |
8029a119 | 6410 | /* Check for overflow. */ |
eb043451 PB |
6411 | if ((value ^ (value >> 1)) & (1 << 30)) |
6412 | return bfd_reloc_overflow; | |
6413 | } | |
6414 | value &= 0x7fffffff; | |
6415 | value |= (bfd_get_32 (input_bfd, hit_data) & 0x80000000); | |
6416 | if (sym_flags == STT_ARM_TFUNC) | |
6417 | value |= 1; | |
6418 | break; | |
252b5132 | 6419 | } |
f21f3fe0 | 6420 | |
252b5132 RH |
6421 | bfd_put_32 (input_bfd, value, hit_data); |
6422 | return bfd_reloc_ok; | |
6423 | ||
6424 | case R_ARM_ABS8: | |
6425 | value += addend; | |
6426 | if ((long) value > 0x7f || (long) value < -0x80) | |
6427 | return bfd_reloc_overflow; | |
6428 | ||
6429 | bfd_put_8 (input_bfd, value, hit_data); | |
6430 | return bfd_reloc_ok; | |
6431 | ||
6432 | case R_ARM_ABS16: | |
6433 | value += addend; | |
6434 | ||
6435 | if ((long) value > 0x7fff || (long) value < -0x8000) | |
6436 | return bfd_reloc_overflow; | |
6437 | ||
6438 | bfd_put_16 (input_bfd, value, hit_data); | |
6439 | return bfd_reloc_ok; | |
6440 | ||
252b5132 | 6441 | case R_ARM_THM_ABS5: |
9b485d32 | 6442 | /* Support ldr and str instructions for the thumb. */ |
4e7fd91e PB |
6443 | if (globals->use_rel) |
6444 | { | |
6445 | /* Need to refetch addend. */ | |
6446 | addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask; | |
6447 | /* ??? Need to determine shift amount from operand size. */ | |
6448 | addend >>= howto->rightshift; | |
6449 | } | |
252b5132 RH |
6450 | value += addend; |
6451 | ||
6452 | /* ??? Isn't value unsigned? */ | |
6453 | if ((long) value > 0x1f || (long) value < -0x10) | |
6454 | return bfd_reloc_overflow; | |
6455 | ||
6456 | /* ??? Value needs to be properly shifted into place first. */ | |
6457 | value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f; | |
6458 | bfd_put_16 (input_bfd, value, hit_data); | |
6459 | return bfd_reloc_ok; | |
6460 | ||
2cab6cc3 MS |
6461 | case R_ARM_THM_ALU_PREL_11_0: |
6462 | /* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */ | |
6463 | { | |
6464 | bfd_vma insn; | |
6465 | bfd_signed_vma relocation; | |
6466 | ||
6467 | insn = (bfd_get_16 (input_bfd, hit_data) << 16) | |
6468 | | bfd_get_16 (input_bfd, hit_data + 2); | |
6469 | ||
6470 | if (globals->use_rel) | |
6471 | { | |
6472 | signed_addend = (insn & 0xff) | ((insn & 0x7000) >> 4) | |
6473 | | ((insn & (1 << 26)) >> 15); | |
6474 | if (insn & 0xf00000) | |
6475 | signed_addend = -signed_addend; | |
6476 | } | |
6477 | ||
6478 | relocation = value + signed_addend; | |
6479 | relocation -= (input_section->output_section->vma | |
6480 | + input_section->output_offset | |
6481 | + rel->r_offset); | |
6482 | ||
6483 | value = abs (relocation); | |
6484 | ||
6485 | if (value >= 0x1000) | |
6486 | return bfd_reloc_overflow; | |
6487 | ||
6488 | insn = (insn & 0xfb0f8f00) | (value & 0xff) | |
6489 | | ((value & 0x700) << 4) | |
6490 | | ((value & 0x800) << 15); | |
6491 | if (relocation < 0) | |
6492 | insn |= 0xa00000; | |
6493 | ||
6494 | bfd_put_16 (input_bfd, insn >> 16, hit_data); | |
6495 | bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2); | |
6496 | ||
6497 | return bfd_reloc_ok; | |
6498 | } | |
6499 | ||
6500 | case R_ARM_THM_PC12: | |
6501 | /* Corresponds to: ldr.w reg, [pc, #offset]. */ | |
6502 | { | |
6503 | bfd_vma insn; | |
6504 | bfd_signed_vma relocation; | |
6505 | ||
6506 | insn = (bfd_get_16 (input_bfd, hit_data) << 16) | |
6507 | | bfd_get_16 (input_bfd, hit_data + 2); | |
6508 | ||
6509 | if (globals->use_rel) | |
6510 | { | |
6511 | signed_addend = insn & 0xfff; | |
6512 | if (!(insn & (1 << 23))) | |
6513 | signed_addend = -signed_addend; | |
6514 | } | |
6515 | ||
6516 | relocation = value + signed_addend; | |
6517 | relocation -= (input_section->output_section->vma | |
6518 | + input_section->output_offset | |
6519 | + rel->r_offset); | |
6520 | ||
6521 | value = abs (relocation); | |
6522 | ||
6523 | if (value >= 0x1000) | |
6524 | return bfd_reloc_overflow; | |
6525 | ||
6526 | insn = (insn & 0xff7ff000) | value; | |
6527 | if (relocation >= 0) | |
6528 | insn |= (1 << 23); | |
6529 | ||
6530 | bfd_put_16 (input_bfd, insn >> 16, hit_data); | |
6531 | bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2); | |
6532 | ||
6533 | return bfd_reloc_ok; | |
6534 | } | |
6535 | ||
dfc5f959 | 6536 | case R_ARM_THM_XPC22: |
c19d1205 | 6537 | case R_ARM_THM_CALL: |
bd97cb95 | 6538 | case R_ARM_THM_JUMP24: |
dfc5f959 | 6539 | /* Thumb BL (branch long instruction). */ |
252b5132 | 6540 | { |
b34976b6 | 6541 | bfd_vma relocation; |
e95de063 | 6542 | bfd_vma reloc_sign; |
b34976b6 AM |
6543 | bfd_boolean overflow = FALSE; |
6544 | bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); | |
6545 | bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); | |
e95de063 MS |
6546 | bfd_signed_vma reloc_signed_max; |
6547 | bfd_signed_vma reloc_signed_min; | |
b34976b6 | 6548 | bfd_vma check; |
252b5132 | 6549 | bfd_signed_vma signed_check; |
e95de063 MS |
6550 | int bitsize; |
6551 | int thumb2 = using_thumb2 (globals); | |
252b5132 | 6552 | |
5ab79981 | 6553 | /* A branch to an undefined weak symbol is turned into a jump to |
19540007 JM |
6554 | the next instruction unless a PLT entry will be created. */ |
6555 | if (h && h->root.type == bfd_link_hash_undefweak | |
6556 | && !(splt != NULL && h->plt.offset != (bfd_vma) -1)) | |
5ab79981 PB |
6557 | { |
6558 | bfd_put_16 (input_bfd, 0xe000, hit_data); | |
6559 | bfd_put_16 (input_bfd, 0xbf00, hit_data + 2); | |
6560 | return bfd_reloc_ok; | |
6561 | } | |
6562 | ||
e95de063 MS |
6563 | /* Fetch the addend. We use the Thumb-2 encoding (backwards compatible |
6564 | with Thumb-1) involving the J1 and J2 bits. */ | |
4e7fd91e PB |
6565 | if (globals->use_rel) |
6566 | { | |
e95de063 MS |
6567 | bfd_vma s = (upper_insn & (1 << 10)) >> 10; |
6568 | bfd_vma upper = upper_insn & 0x3ff; | |
6569 | bfd_vma lower = lower_insn & 0x7ff; | |
6570 | bfd_vma j1 = (lower_insn & (1 << 13)) >> 13; | |
6571 | bfd_vma j2 = (lower_insn & (1 << 11)) >> 11; | |
6572 | bfd_vma i1 = j1 ^ s ? 0 : 1; | |
6573 | bfd_vma i2 = j2 ^ s ? 0 : 1; | |
6574 | ||
6575 | addend = (i1 << 23) | (i2 << 22) | (upper << 12) | (lower << 1); | |
6576 | /* Sign extend. */ | |
6577 | addend = (addend | ((s ? 0 : 1) << 24)) - (1 << 24); | |
6578 | ||
4e7fd91e PB |
6579 | signed_addend = addend; |
6580 | } | |
cb1afa5c | 6581 | |
dfc5f959 NC |
6582 | if (r_type == R_ARM_THM_XPC22) |
6583 | { | |
6584 | /* Check for Thumb to Thumb call. */ | |
6585 | /* FIXME: Should we translate the instruction into a BL | |
6586 | instruction instead ? */ | |
6587 | if (sym_flags == STT_ARM_TFUNC) | |
d003868e AM |
6588 | (*_bfd_error_handler) |
6589 | (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."), | |
6590 | input_bfd, | |
6591 | h ? h->root.root.string : "(local)"); | |
dfc5f959 NC |
6592 | } |
6593 | else | |
252b5132 | 6594 | { |
dfc5f959 NC |
6595 | /* If it is not a call to Thumb, assume call to Arm. |
6596 | If it is a call relative to a section name, then it is not a | |
b7693d02 DJ |
6597 | function call at all, but rather a long jump. Calls through |
6598 | the PLT do not require stubs. */ | |
6599 | if (sym_flags != STT_ARM_TFUNC && sym_flags != STT_SECTION | |
6600 | && (h == NULL || splt == NULL | |
6601 | || h->plt.offset == (bfd_vma) -1)) | |
dfc5f959 | 6602 | { |
bd97cb95 | 6603 | if (globals->use_blx && r_type == R_ARM_THM_CALL) |
39b41c9c PB |
6604 | { |
6605 | /* Convert BL to BLX. */ | |
6606 | lower_insn = (lower_insn & ~0x1000) | 0x0800; | |
6607 | } | |
155d87d7 CL |
6608 | else if (( r_type != R_ARM_THM_CALL) |
6609 | && (r_type != R_ARM_THM_JUMP24)) | |
8029a119 NC |
6610 | { |
6611 | if (elf32_thumb_to_arm_stub | |
6612 | (info, sym_name, input_bfd, output_bfd, input_section, | |
6613 | hit_data, sym_sec, rel->r_offset, signed_addend, value, | |
6614 | error_message)) | |
6615 | return bfd_reloc_ok; | |
6616 | else | |
6617 | return bfd_reloc_dangerous; | |
6618 | } | |
da5938a2 | 6619 | } |
bd97cb95 DJ |
6620 | else if (sym_flags == STT_ARM_TFUNC && globals->use_blx |
6621 | && r_type == R_ARM_THM_CALL) | |
39b41c9c PB |
6622 | { |
6623 | /* Make sure this is a BL. */ | |
6624 | lower_insn |= 0x1800; | |
6625 | } | |
252b5132 | 6626 | } |
f21f3fe0 | 6627 | |
b7693d02 DJ |
6628 | /* Handle calls via the PLT. */ |
6629 | if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1) | |
6630 | { | |
6631 | value = (splt->output_section->vma | |
6632 | + splt->output_offset | |
6633 | + h->plt.offset); | |
bd97cb95 | 6634 | if (globals->use_blx && r_type == R_ARM_THM_CALL) |
33bfe774 JB |
6635 | { |
6636 | /* If the Thumb BLX instruction is available, convert the | |
6637 | BL to a BLX instruction to call the ARM-mode PLT entry. */ | |
39b41c9c | 6638 | lower_insn = (lower_insn & ~0x1000) | 0x0800; |
33bfe774 JB |
6639 | } |
6640 | else | |
6641 | /* Target the Thumb stub before the ARM PLT entry. */ | |
6642 | value -= PLT_THUMB_STUB_SIZE; | |
0945cdfd | 6643 | *unresolved_reloc_p = FALSE; |
b7693d02 DJ |
6644 | } |
6645 | ||
155d87d7 | 6646 | if (r_type == R_ARM_THM_CALL || r_type == R_ARM_THM_JUMP24) |
906e58ca NC |
6647 | { |
6648 | /* Check if a stub has to be inserted because the destination | |
8029a119 | 6649 | is too far. */ |
906e58ca NC |
6650 | bfd_vma from; |
6651 | bfd_signed_vma branch_offset; | |
6652 | struct elf32_arm_stub_hash_entry *stub_entry = NULL; | |
6653 | ||
6654 | from = (input_section->output_section->vma | |
6655 | + input_section->output_offset | |
6656 | + rel->r_offset); | |
6657 | branch_offset = (bfd_signed_vma)(value - from); | |
6658 | ||
6659 | if ((!thumb2 | |
6660 | && (branch_offset > THM_MAX_FWD_BRANCH_OFFSET | |
6661 | || (branch_offset < THM_MAX_BWD_BRANCH_OFFSET))) | |
6662 | || | |
6663 | (thumb2 | |
6664 | && (branch_offset > THM2_MAX_FWD_BRANCH_OFFSET | |
f4ac8484 | 6665 | || (branch_offset < THM2_MAX_BWD_BRANCH_OFFSET))) |
155d87d7 CL |
6666 | || ((sym_flags != STT_ARM_TFUNC) |
6667 | && (((r_type == R_ARM_THM_CALL) && !globals->use_blx) | |
6668 | || r_type == R_ARM_THM_JUMP24))) | |
906e58ca NC |
6669 | { |
6670 | /* The target is out of reach or we are changing modes, so | |
6671 | redirect the branch to the local stub for this | |
6672 | function. */ | |
6673 | stub_entry = elf32_arm_get_stub_entry (input_section, | |
6674 | sym_sec, h, | |
6675 | rel, globals); | |
6676 | if (stub_entry != NULL) | |
6677 | value = (stub_entry->stub_offset | |
6678 | + stub_entry->stub_sec->output_offset | |
6679 | + stub_entry->stub_sec->output_section->vma); | |
6680 | ||
f4ac8484 | 6681 | /* If this call becomes a call to Arm, force BLX. */ |
155d87d7 | 6682 | if (globals->use_blx && (r_type == R_ARM_THM_CALL)) |
f4ac8484 DJ |
6683 | { |
6684 | if ((stub_entry | |
6685 | && !arm_stub_is_thumb (stub_entry->stub_type)) | |
6686 | || (sym_flags != STT_ARM_TFUNC)) | |
6687 | lower_insn = (lower_insn & ~0x1000) | 0x0800; | |
6688 | } | |
906e58ca NC |
6689 | } |
6690 | } | |
6691 | ||
ba96a88f | 6692 | relocation = value + signed_addend; |
f21f3fe0 | 6693 | |
252b5132 | 6694 | relocation -= (input_section->output_section->vma |
ba96a88f NC |
6695 | + input_section->output_offset |
6696 | + rel->r_offset); | |
9a5aca8c | 6697 | |
252b5132 RH |
6698 | check = relocation >> howto->rightshift; |
6699 | ||
6700 | /* If this is a signed value, the rightshift just dropped | |
6701 | leading 1 bits (assuming twos complement). */ | |
6702 | if ((bfd_signed_vma) relocation >= 0) | |
6703 | signed_check = check; | |
6704 | else | |
6705 | signed_check = check | ~((bfd_vma) -1 >> howto->rightshift); | |
6706 | ||
e95de063 MS |
6707 | /* Calculate the permissable maximum and minimum values for |
6708 | this relocation according to whether we're relocating for | |
6709 | Thumb-2 or not. */ | |
6710 | bitsize = howto->bitsize; | |
6711 | if (!thumb2) | |
6712 | bitsize -= 2; | |
6713 | reloc_signed_max = ((1 << (bitsize - 1)) - 1) >> howto->rightshift; | |
6714 | reloc_signed_min = ~reloc_signed_max; | |
6715 | ||
252b5132 | 6716 | /* Assumes two's complement. */ |
ba96a88f | 6717 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) |
b34976b6 | 6718 | overflow = TRUE; |
252b5132 | 6719 | |
bd97cb95 | 6720 | if ((lower_insn & 0x5000) == 0x4000) |
c62e1cc3 NC |
6721 | /* For a BLX instruction, make sure that the relocation is rounded up |
6722 | to a word boundary. This follows the semantics of the instruction | |
6723 | which specifies that bit 1 of the target address will come from bit | |
6724 | 1 of the base address. */ | |
6725 | relocation = (relocation + 2) & ~ 3; | |
cb1afa5c | 6726 | |
e95de063 MS |
6727 | /* Put RELOCATION back into the insn. Assumes two's complement. |
6728 | We use the Thumb-2 encoding, which is safe even if dealing with | |
6729 | a Thumb-1 instruction by virtue of our overflow check above. */ | |
6730 | reloc_sign = (signed_check < 0) ? 1 : 0; | |
6731 | upper_insn = (upper_insn & ~(bfd_vma) 0x7ff) | |
6732 | | ((relocation >> 12) & 0x3ff) | |
6733 | | (reloc_sign << 10); | |
906e58ca | 6734 | lower_insn = (lower_insn & ~(bfd_vma) 0x2fff) |
e95de063 MS |
6735 | | (((!((relocation >> 23) & 1)) ^ reloc_sign) << 13) |
6736 | | (((!((relocation >> 22) & 1)) ^ reloc_sign) << 11) | |
6737 | | ((relocation >> 1) & 0x7ff); | |
c62e1cc3 | 6738 | |
252b5132 RH |
6739 | /* Put the relocated value back in the object file: */ |
6740 | bfd_put_16 (input_bfd, upper_insn, hit_data); | |
6741 | bfd_put_16 (input_bfd, lower_insn, hit_data + 2); | |
6742 | ||
6743 | return (overflow ? bfd_reloc_overflow : bfd_reloc_ok); | |
6744 | } | |
6745 | break; | |
6746 | ||
c19d1205 ZW |
6747 | case R_ARM_THM_JUMP19: |
6748 | /* Thumb32 conditional branch instruction. */ | |
6749 | { | |
6750 | bfd_vma relocation; | |
6751 | bfd_boolean overflow = FALSE; | |
6752 | bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); | |
6753 | bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); | |
a00a1f35 MS |
6754 | bfd_signed_vma reloc_signed_max = 0xffffe; |
6755 | bfd_signed_vma reloc_signed_min = -0x100000; | |
c19d1205 ZW |
6756 | bfd_signed_vma signed_check; |
6757 | ||
6758 | /* Need to refetch the addend, reconstruct the top three bits, | |
6759 | and squish the two 11 bit pieces together. */ | |
6760 | if (globals->use_rel) | |
6761 | { | |
6762 | bfd_vma S = (upper_insn & 0x0400) >> 10; | |
a00a1f35 | 6763 | bfd_vma upper = (upper_insn & 0x003f); |
c19d1205 ZW |
6764 | bfd_vma J1 = (lower_insn & 0x2000) >> 13; |
6765 | bfd_vma J2 = (lower_insn & 0x0800) >> 11; | |
6766 | bfd_vma lower = (lower_insn & 0x07ff); | |
6767 | ||
a00a1f35 MS |
6768 | upper |= J1 << 6; |
6769 | upper |= J2 << 7; | |
6770 | upper |= (!S) << 8; | |
c19d1205 ZW |
6771 | upper -= 0x0100; /* Sign extend. */ |
6772 | ||
6773 | addend = (upper << 12) | (lower << 1); | |
6774 | signed_addend = addend; | |
6775 | } | |
6776 | ||
bd97cb95 DJ |
6777 | /* Handle calls via the PLT. */ |
6778 | if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1) | |
6779 | { | |
6780 | value = (splt->output_section->vma | |
6781 | + splt->output_offset | |
6782 | + h->plt.offset); | |
6783 | /* Target the Thumb stub before the ARM PLT entry. */ | |
6784 | value -= PLT_THUMB_STUB_SIZE; | |
6785 | *unresolved_reloc_p = FALSE; | |
6786 | } | |
6787 | ||
c19d1205 ZW |
6788 | /* ??? Should handle interworking? GCC might someday try to |
6789 | use this for tail calls. */ | |
6790 | ||
6791 | relocation = value + signed_addend; | |
6792 | relocation -= (input_section->output_section->vma | |
6793 | + input_section->output_offset | |
6794 | + rel->r_offset); | |
a00a1f35 | 6795 | signed_check = (bfd_signed_vma) relocation; |
c19d1205 | 6796 | |
c19d1205 ZW |
6797 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) |
6798 | overflow = TRUE; | |
6799 | ||
6800 | /* Put RELOCATION back into the insn. */ | |
6801 | { | |
6802 | bfd_vma S = (relocation & 0x00100000) >> 20; | |
6803 | bfd_vma J2 = (relocation & 0x00080000) >> 19; | |
6804 | bfd_vma J1 = (relocation & 0x00040000) >> 18; | |
6805 | bfd_vma hi = (relocation & 0x0003f000) >> 12; | |
6806 | bfd_vma lo = (relocation & 0x00000ffe) >> 1; | |
6807 | ||
a00a1f35 | 6808 | upper_insn = (upper_insn & 0xfbc0) | (S << 10) | hi; |
c19d1205 ZW |
6809 | lower_insn = (lower_insn & 0xd000) | (J1 << 13) | (J2 << 11) | lo; |
6810 | } | |
6811 | ||
6812 | /* Put the relocated value back in the object file: */ | |
6813 | bfd_put_16 (input_bfd, upper_insn, hit_data); | |
6814 | bfd_put_16 (input_bfd, lower_insn, hit_data + 2); | |
6815 | ||
6816 | return (overflow ? bfd_reloc_overflow : bfd_reloc_ok); | |
6817 | } | |
6818 | ||
6819 | case R_ARM_THM_JUMP11: | |
6820 | case R_ARM_THM_JUMP8: | |
6821 | case R_ARM_THM_JUMP6: | |
51c5503b NC |
6822 | /* Thumb B (branch) instruction). */ |
6823 | { | |
6cf9e9fe | 6824 | bfd_signed_vma relocation; |
51c5503b NC |
6825 | bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1; |
6826 | bfd_signed_vma reloc_signed_min = ~ reloc_signed_max; | |
51c5503b NC |
6827 | bfd_signed_vma signed_check; |
6828 | ||
c19d1205 ZW |
6829 | /* CZB cannot jump backward. */ |
6830 | if (r_type == R_ARM_THM_JUMP6) | |
6831 | reloc_signed_min = 0; | |
6832 | ||
4e7fd91e | 6833 | if (globals->use_rel) |
6cf9e9fe | 6834 | { |
4e7fd91e PB |
6835 | /* Need to refetch addend. */ |
6836 | addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask; | |
6837 | if (addend & ((howto->src_mask + 1) >> 1)) | |
6838 | { | |
6839 | signed_addend = -1; | |
6840 | signed_addend &= ~ howto->src_mask; | |
6841 | signed_addend |= addend; | |
6842 | } | |
6843 | else | |
6844 | signed_addend = addend; | |
6845 | /* The value in the insn has been right shifted. We need to | |
6846 | undo this, so that we can perform the address calculation | |
6847 | in terms of bytes. */ | |
6848 | signed_addend <<= howto->rightshift; | |
6cf9e9fe | 6849 | } |
6cf9e9fe | 6850 | relocation = value + signed_addend; |
51c5503b NC |
6851 | |
6852 | relocation -= (input_section->output_section->vma | |
6853 | + input_section->output_offset | |
6854 | + rel->r_offset); | |
6855 | ||
6cf9e9fe NC |
6856 | relocation >>= howto->rightshift; |
6857 | signed_check = relocation; | |
c19d1205 ZW |
6858 | |
6859 | if (r_type == R_ARM_THM_JUMP6) | |
6860 | relocation = ((relocation & 0x0020) << 4) | ((relocation & 0x001f) << 3); | |
6861 | else | |
6862 | relocation &= howto->dst_mask; | |
51c5503b | 6863 | relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask)); |
cedb70c5 | 6864 | |
51c5503b NC |
6865 | bfd_put_16 (input_bfd, relocation, hit_data); |
6866 | ||
6867 | /* Assumes two's complement. */ | |
6868 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) | |
6869 | return bfd_reloc_overflow; | |
6870 | ||
6871 | return bfd_reloc_ok; | |
6872 | } | |
cedb70c5 | 6873 | |
8375c36b PB |
6874 | case R_ARM_ALU_PCREL7_0: |
6875 | case R_ARM_ALU_PCREL15_8: | |
6876 | case R_ARM_ALU_PCREL23_15: | |
6877 | { | |
6878 | bfd_vma insn; | |
6879 | bfd_vma relocation; | |
6880 | ||
6881 | insn = bfd_get_32 (input_bfd, hit_data); | |
4e7fd91e PB |
6882 | if (globals->use_rel) |
6883 | { | |
6884 | /* Extract the addend. */ | |
6885 | addend = (insn & 0xff) << ((insn & 0xf00) >> 7); | |
6886 | signed_addend = addend; | |
6887 | } | |
8375c36b PB |
6888 | relocation = value + signed_addend; |
6889 | ||
6890 | relocation -= (input_section->output_section->vma | |
6891 | + input_section->output_offset | |
6892 | + rel->r_offset); | |
6893 | insn = (insn & ~0xfff) | |
6894 | | ((howto->bitpos << 7) & 0xf00) | |
6895 | | ((relocation >> howto->bitpos) & 0xff); | |
6896 | bfd_put_32 (input_bfd, value, hit_data); | |
6897 | } | |
6898 | return bfd_reloc_ok; | |
6899 | ||
252b5132 RH |
6900 | case R_ARM_GNU_VTINHERIT: |
6901 | case R_ARM_GNU_VTENTRY: | |
6902 | return bfd_reloc_ok; | |
6903 | ||
c19d1205 | 6904 | case R_ARM_GOTOFF32: |
252b5132 RH |
6905 | /* Relocation is relative to the start of the |
6906 | global offset table. */ | |
6907 | ||
6908 | BFD_ASSERT (sgot != NULL); | |
6909 | if (sgot == NULL) | |
6910 | return bfd_reloc_notsupported; | |
9a5aca8c | 6911 | |
cedb70c5 | 6912 | /* If we are addressing a Thumb function, we need to adjust the |
ee29b9fb RE |
6913 | address by one, so that attempts to call the function pointer will |
6914 | correctly interpret it as Thumb code. */ | |
6915 | if (sym_flags == STT_ARM_TFUNC) | |
6916 | value += 1; | |
6917 | ||
252b5132 RH |
6918 | /* Note that sgot->output_offset is not involved in this |
6919 | calculation. We always want the start of .got. If we | |
6920 | define _GLOBAL_OFFSET_TABLE in a different way, as is | |
6921 | permitted by the ABI, we might have to change this | |
9b485d32 | 6922 | calculation. */ |
252b5132 | 6923 | value -= sgot->output_section->vma; |
f21f3fe0 | 6924 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 | 6925 | contents, rel->r_offset, value, |
00a97672 | 6926 | rel->r_addend); |
252b5132 RH |
6927 | |
6928 | case R_ARM_GOTPC: | |
a7c10850 | 6929 | /* Use global offset table as symbol value. */ |
252b5132 | 6930 | BFD_ASSERT (sgot != NULL); |
f21f3fe0 | 6931 | |
252b5132 RH |
6932 | if (sgot == NULL) |
6933 | return bfd_reloc_notsupported; | |
6934 | ||
0945cdfd | 6935 | *unresolved_reloc_p = FALSE; |
252b5132 | 6936 | value = sgot->output_section->vma; |
f21f3fe0 | 6937 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 | 6938 | contents, rel->r_offset, value, |
00a97672 | 6939 | rel->r_addend); |
f21f3fe0 | 6940 | |
252b5132 | 6941 | case R_ARM_GOT32: |
eb043451 | 6942 | case R_ARM_GOT_PREL: |
252b5132 | 6943 | /* Relocation is to the entry for this symbol in the |
9b485d32 | 6944 | global offset table. */ |
252b5132 RH |
6945 | if (sgot == NULL) |
6946 | return bfd_reloc_notsupported; | |
f21f3fe0 | 6947 | |
252b5132 RH |
6948 | if (h != NULL) |
6949 | { | |
6950 | bfd_vma off; | |
5e681ec4 | 6951 | bfd_boolean dyn; |
f21f3fe0 | 6952 | |
252b5132 RH |
6953 | off = h->got.offset; |
6954 | BFD_ASSERT (off != (bfd_vma) -1); | |
5e681ec4 | 6955 | dyn = globals->root.dynamic_sections_created; |
f21f3fe0 | 6956 | |
5e681ec4 | 6957 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
50d6c878 | 6958 | || (info->shared |
5e681ec4 PB |
6959 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
6960 | || (ELF_ST_VISIBILITY (h->other) | |
6961 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
6962 | { |
6963 | /* This is actually a static link, or it is a -Bsymbolic link | |
6964 | and the symbol is defined locally. We must initialize this | |
6965 | entry in the global offset table. Since the offset must | |
6966 | always be a multiple of 4, we use the least significant bit | |
6967 | to record whether we have initialized it already. | |
f21f3fe0 | 6968 | |
00a97672 | 6969 | When doing a dynamic link, we create a .rel(a).got relocation |
f21f3fe0 | 6970 | entry to initialize the value. This is done in the |
9b485d32 | 6971 | finish_dynamic_symbol routine. */ |
252b5132 RH |
6972 | if ((off & 1) != 0) |
6973 | off &= ~1; | |
6974 | else | |
6975 | { | |
ee29b9fb RE |
6976 | /* If we are addressing a Thumb function, we need to |
6977 | adjust the address by one, so that attempts to | |
6978 | call the function pointer will correctly | |
6979 | interpret it as Thumb code. */ | |
6980 | if (sym_flags == STT_ARM_TFUNC) | |
6981 | value |= 1; | |
6982 | ||
252b5132 RH |
6983 | bfd_put_32 (output_bfd, value, sgot->contents + off); |
6984 | h->got.offset |= 1; | |
6985 | } | |
6986 | } | |
0945cdfd DJ |
6987 | else |
6988 | *unresolved_reloc_p = FALSE; | |
f21f3fe0 | 6989 | |
252b5132 RH |
6990 | value = sgot->output_offset + off; |
6991 | } | |
6992 | else | |
6993 | { | |
6994 | bfd_vma off; | |
f21f3fe0 | 6995 | |
252b5132 RH |
6996 | BFD_ASSERT (local_got_offsets != NULL && |
6997 | local_got_offsets[r_symndx] != (bfd_vma) -1); | |
f21f3fe0 | 6998 | |
252b5132 | 6999 | off = local_got_offsets[r_symndx]; |
f21f3fe0 | 7000 | |
252b5132 RH |
7001 | /* The offset must always be a multiple of 4. We use the |
7002 | least significant bit to record whether we have already | |
9b485d32 | 7003 | generated the necessary reloc. */ |
252b5132 RH |
7004 | if ((off & 1) != 0) |
7005 | off &= ~1; | |
7006 | else | |
7007 | { | |
b7693d02 DJ |
7008 | /* If we are addressing a Thumb function, we need to |
7009 | adjust the address by one, so that attempts to | |
7010 | call the function pointer will correctly | |
7011 | interpret it as Thumb code. */ | |
7012 | if (sym_flags == STT_ARM_TFUNC) | |
7013 | value |= 1; | |
7014 | ||
00a97672 RS |
7015 | if (globals->use_rel) |
7016 | bfd_put_32 (output_bfd, value, sgot->contents + off); | |
f21f3fe0 | 7017 | |
252b5132 RH |
7018 | if (info->shared) |
7019 | { | |
7020 | asection * srelgot; | |
947216bf AM |
7021 | Elf_Internal_Rela outrel; |
7022 | bfd_byte *loc; | |
f21f3fe0 | 7023 | |
00a97672 RS |
7024 | srelgot = (bfd_get_section_by_name |
7025 | (dynobj, RELOC_SECTION (globals, ".got"))); | |
252b5132 | 7026 | BFD_ASSERT (srelgot != NULL); |
f21f3fe0 | 7027 | |
00a97672 | 7028 | outrel.r_addend = addend + value; |
252b5132 | 7029 | outrel.r_offset = (sgot->output_section->vma |
f21f3fe0 | 7030 | + sgot->output_offset |
252b5132 RH |
7031 | + off); |
7032 | outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); | |
947216bf | 7033 | loc = srelgot->contents; |
00a97672 RS |
7034 | loc += srelgot->reloc_count++ * RELOC_SIZE (globals); |
7035 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
252b5132 | 7036 | } |
f21f3fe0 | 7037 | |
252b5132 RH |
7038 | local_got_offsets[r_symndx] |= 1; |
7039 | } | |
f21f3fe0 | 7040 | |
252b5132 RH |
7041 | value = sgot->output_offset + off; |
7042 | } | |
eb043451 PB |
7043 | if (r_type != R_ARM_GOT32) |
7044 | value += sgot->output_section->vma; | |
9a5aca8c | 7045 | |
f21f3fe0 | 7046 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 | 7047 | contents, rel->r_offset, value, |
00a97672 | 7048 | rel->r_addend); |
f21f3fe0 | 7049 | |
ba93b8ac DJ |
7050 | case R_ARM_TLS_LDO32: |
7051 | value = value - dtpoff_base (info); | |
7052 | ||
7053 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
00a97672 RS |
7054 | contents, rel->r_offset, value, |
7055 | rel->r_addend); | |
ba93b8ac DJ |
7056 | |
7057 | case R_ARM_TLS_LDM32: | |
7058 | { | |
7059 | bfd_vma off; | |
7060 | ||
7061 | if (globals->sgot == NULL) | |
7062 | abort (); | |
7063 | ||
7064 | off = globals->tls_ldm_got.offset; | |
7065 | ||
7066 | if ((off & 1) != 0) | |
7067 | off &= ~1; | |
7068 | else | |
7069 | { | |
7070 | /* If we don't know the module number, create a relocation | |
7071 | for it. */ | |
7072 | if (info->shared) | |
7073 | { | |
7074 | Elf_Internal_Rela outrel; | |
7075 | bfd_byte *loc; | |
7076 | ||
7077 | if (globals->srelgot == NULL) | |
7078 | abort (); | |
7079 | ||
00a97672 | 7080 | outrel.r_addend = 0; |
ba93b8ac DJ |
7081 | outrel.r_offset = (globals->sgot->output_section->vma |
7082 | + globals->sgot->output_offset + off); | |
7083 | outrel.r_info = ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32); | |
7084 | ||
00a97672 RS |
7085 | if (globals->use_rel) |
7086 | bfd_put_32 (output_bfd, outrel.r_addend, | |
7087 | globals->sgot->contents + off); | |
ba93b8ac DJ |
7088 | |
7089 | loc = globals->srelgot->contents; | |
00a97672 RS |
7090 | loc += globals->srelgot->reloc_count++ * RELOC_SIZE (globals); |
7091 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
ba93b8ac DJ |
7092 | } |
7093 | else | |
7094 | bfd_put_32 (output_bfd, 1, globals->sgot->contents + off); | |
7095 | ||
7096 | globals->tls_ldm_got.offset |= 1; | |
7097 | } | |
7098 | ||
906e58ca | 7099 | value = globals->sgot->output_section->vma + globals->sgot->output_offset + off |
ba93b8ac DJ |
7100 | - (input_section->output_section->vma + input_section->output_offset + rel->r_offset); |
7101 | ||
7102 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
7103 | contents, rel->r_offset, value, | |
00a97672 | 7104 | rel->r_addend); |
ba93b8ac DJ |
7105 | } |
7106 | ||
7107 | case R_ARM_TLS_GD32: | |
7108 | case R_ARM_TLS_IE32: | |
7109 | { | |
7110 | bfd_vma off; | |
7111 | int indx; | |
7112 | char tls_type; | |
7113 | ||
7114 | if (globals->sgot == NULL) | |
7115 | abort (); | |
7116 | ||
7117 | indx = 0; | |
7118 | if (h != NULL) | |
7119 | { | |
7120 | bfd_boolean dyn; | |
7121 | dyn = globals->root.dynamic_sections_created; | |
7122 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
7123 | && (!info->shared | |
7124 | || !SYMBOL_REFERENCES_LOCAL (info, h))) | |
7125 | { | |
7126 | *unresolved_reloc_p = FALSE; | |
7127 | indx = h->dynindx; | |
7128 | } | |
7129 | off = h->got.offset; | |
7130 | tls_type = ((struct elf32_arm_link_hash_entry *) h)->tls_type; | |
7131 | } | |
7132 | else | |
7133 | { | |
7134 | if (local_got_offsets == NULL) | |
7135 | abort (); | |
7136 | off = local_got_offsets[r_symndx]; | |
7137 | tls_type = elf32_arm_local_got_tls_type (input_bfd)[r_symndx]; | |
7138 | } | |
7139 | ||
7140 | if (tls_type == GOT_UNKNOWN) | |
7141 | abort (); | |
7142 | ||
7143 | if ((off & 1) != 0) | |
7144 | off &= ~1; | |
7145 | else | |
7146 | { | |
7147 | bfd_boolean need_relocs = FALSE; | |
7148 | Elf_Internal_Rela outrel; | |
7149 | bfd_byte *loc = NULL; | |
7150 | int cur_off = off; | |
7151 | ||
7152 | /* The GOT entries have not been initialized yet. Do it | |
7153 | now, and emit any relocations. If both an IE GOT and a | |
7154 | GD GOT are necessary, we emit the GD first. */ | |
7155 | ||
7156 | if ((info->shared || indx != 0) | |
7157 | && (h == NULL | |
7158 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7159 | || h->root.type != bfd_link_hash_undefweak)) | |
7160 | { | |
7161 | need_relocs = TRUE; | |
7162 | if (globals->srelgot == NULL) | |
7163 | abort (); | |
7164 | loc = globals->srelgot->contents; | |
00a97672 | 7165 | loc += globals->srelgot->reloc_count * RELOC_SIZE (globals); |
ba93b8ac DJ |
7166 | } |
7167 | ||
7168 | if (tls_type & GOT_TLS_GD) | |
7169 | { | |
7170 | if (need_relocs) | |
7171 | { | |
00a97672 | 7172 | outrel.r_addend = 0; |
ba93b8ac | 7173 | outrel.r_offset = (globals->sgot->output_section->vma |
00a97672 RS |
7174 | + globals->sgot->output_offset |
7175 | + cur_off); | |
ba93b8ac | 7176 | outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DTPMOD32); |
ba93b8ac | 7177 | |
00a97672 RS |
7178 | if (globals->use_rel) |
7179 | bfd_put_32 (output_bfd, outrel.r_addend, | |
7180 | globals->sgot->contents + cur_off); | |
7181 | ||
7182 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
ba93b8ac | 7183 | globals->srelgot->reloc_count++; |
00a97672 | 7184 | loc += RELOC_SIZE (globals); |
ba93b8ac DJ |
7185 | |
7186 | if (indx == 0) | |
7187 | bfd_put_32 (output_bfd, value - dtpoff_base (info), | |
7188 | globals->sgot->contents + cur_off + 4); | |
7189 | else | |
7190 | { | |
00a97672 | 7191 | outrel.r_addend = 0; |
ba93b8ac DJ |
7192 | outrel.r_info = ELF32_R_INFO (indx, |
7193 | R_ARM_TLS_DTPOFF32); | |
7194 | outrel.r_offset += 4; | |
00a97672 RS |
7195 | |
7196 | if (globals->use_rel) | |
7197 | bfd_put_32 (output_bfd, outrel.r_addend, | |
7198 | globals->sgot->contents + cur_off + 4); | |
7199 | ||
7200 | ||
7201 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
ba93b8ac | 7202 | globals->srelgot->reloc_count++; |
00a97672 | 7203 | loc += RELOC_SIZE (globals); |
ba93b8ac DJ |
7204 | } |
7205 | } | |
7206 | else | |
7207 | { | |
7208 | /* If we are not emitting relocations for a | |
7209 | general dynamic reference, then we must be in a | |
7210 | static link or an executable link with the | |
7211 | symbol binding locally. Mark it as belonging | |
7212 | to module 1, the executable. */ | |
7213 | bfd_put_32 (output_bfd, 1, | |
7214 | globals->sgot->contents + cur_off); | |
7215 | bfd_put_32 (output_bfd, value - dtpoff_base (info), | |
7216 | globals->sgot->contents + cur_off + 4); | |
7217 | } | |
7218 | ||
7219 | cur_off += 8; | |
7220 | } | |
7221 | ||
7222 | if (tls_type & GOT_TLS_IE) | |
7223 | { | |
7224 | if (need_relocs) | |
7225 | { | |
00a97672 RS |
7226 | if (indx == 0) |
7227 | outrel.r_addend = value - dtpoff_base (info); | |
7228 | else | |
7229 | outrel.r_addend = 0; | |
ba93b8ac DJ |
7230 | outrel.r_offset = (globals->sgot->output_section->vma |
7231 | + globals->sgot->output_offset | |
7232 | + cur_off); | |
7233 | outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_TPOFF32); | |
7234 | ||
00a97672 RS |
7235 | if (globals->use_rel) |
7236 | bfd_put_32 (output_bfd, outrel.r_addend, | |
ba93b8ac DJ |
7237 | globals->sgot->contents + cur_off); |
7238 | ||
00a97672 | 7239 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); |
ba93b8ac | 7240 | globals->srelgot->reloc_count++; |
00a97672 | 7241 | loc += RELOC_SIZE (globals); |
ba93b8ac DJ |
7242 | } |
7243 | else | |
7244 | bfd_put_32 (output_bfd, tpoff (info, value), | |
7245 | globals->sgot->contents + cur_off); | |
7246 | cur_off += 4; | |
7247 | } | |
7248 | ||
7249 | if (h != NULL) | |
7250 | h->got.offset |= 1; | |
7251 | else | |
7252 | local_got_offsets[r_symndx] |= 1; | |
7253 | } | |
7254 | ||
7255 | if ((tls_type & GOT_TLS_GD) && r_type != R_ARM_TLS_GD32) | |
7256 | off += 8; | |
906e58ca | 7257 | value = globals->sgot->output_section->vma + globals->sgot->output_offset + off |
ba93b8ac DJ |
7258 | - (input_section->output_section->vma + input_section->output_offset + rel->r_offset); |
7259 | ||
7260 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
7261 | contents, rel->r_offset, value, | |
00a97672 | 7262 | rel->r_addend); |
ba93b8ac DJ |
7263 | } |
7264 | ||
7265 | case R_ARM_TLS_LE32: | |
7266 | if (info->shared) | |
7267 | { | |
7268 | (*_bfd_error_handler) | |
7269 | (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"), | |
7270 | input_bfd, input_section, | |
7271 | (long) rel->r_offset, howto->name); | |
906e58ca | 7272 | return FALSE; |
ba93b8ac DJ |
7273 | } |
7274 | else | |
7275 | value = tpoff (info, value); | |
906e58ca | 7276 | |
ba93b8ac | 7277 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
00a97672 RS |
7278 | contents, rel->r_offset, value, |
7279 | rel->r_addend); | |
ba93b8ac | 7280 | |
319850b4 JB |
7281 | case R_ARM_V4BX: |
7282 | if (globals->fix_v4bx) | |
845b51d6 PB |
7283 | { |
7284 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
319850b4 | 7285 | |
845b51d6 PB |
7286 | /* Ensure that we have a BX instruction. */ |
7287 | BFD_ASSERT ((insn & 0x0ffffff0) == 0x012fff10); | |
319850b4 | 7288 | |
845b51d6 PB |
7289 | if (globals->fix_v4bx == 2 && (insn & 0xf) != 0xf) |
7290 | { | |
7291 | /* Branch to veneer. */ | |
7292 | bfd_vma glue_addr; | |
7293 | glue_addr = elf32_arm_bx_glue (info, insn & 0xf); | |
7294 | glue_addr -= input_section->output_section->vma | |
7295 | + input_section->output_offset | |
7296 | + rel->r_offset + 8; | |
7297 | insn = (insn & 0xf0000000) | 0x0a000000 | |
7298 | | ((glue_addr >> 2) & 0x00ffffff); | |
7299 | } | |
7300 | else | |
7301 | { | |
7302 | /* Preserve Rm (lowest four bits) and the condition code | |
7303 | (highest four bits). Other bits encode MOV PC,Rm. */ | |
7304 | insn = (insn & 0xf000000f) | 0x01a0f000; | |
7305 | } | |
319850b4 | 7306 | |
845b51d6 PB |
7307 | bfd_put_32 (input_bfd, insn, hit_data); |
7308 | } | |
319850b4 JB |
7309 | return bfd_reloc_ok; |
7310 | ||
b6895b4f PB |
7311 | case R_ARM_MOVW_ABS_NC: |
7312 | case R_ARM_MOVT_ABS: | |
7313 | case R_ARM_MOVW_PREL_NC: | |
7314 | case R_ARM_MOVT_PREL: | |
92f5d02b MS |
7315 | /* Until we properly support segment-base-relative addressing then |
7316 | we assume the segment base to be zero, as for the group relocations. | |
7317 | Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC | |
7318 | and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS. */ | |
7319 | case R_ARM_MOVW_BREL_NC: | |
7320 | case R_ARM_MOVW_BREL: | |
7321 | case R_ARM_MOVT_BREL: | |
b6895b4f PB |
7322 | { |
7323 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
7324 | ||
7325 | if (globals->use_rel) | |
7326 | { | |
7327 | addend = ((insn >> 4) & 0xf000) | (insn & 0xfff); | |
39623e12 | 7328 | signed_addend = (addend ^ 0x8000) - 0x8000; |
b6895b4f | 7329 | } |
92f5d02b | 7330 | |
b6895b4f | 7331 | value += signed_addend; |
b6895b4f PB |
7332 | |
7333 | if (r_type == R_ARM_MOVW_PREL_NC || r_type == R_ARM_MOVT_PREL) | |
7334 | value -= (input_section->output_section->vma | |
7335 | + input_section->output_offset + rel->r_offset); | |
7336 | ||
92f5d02b MS |
7337 | if (r_type == R_ARM_MOVW_BREL && value >= 0x10000) |
7338 | return bfd_reloc_overflow; | |
7339 | ||
7340 | if (sym_flags == STT_ARM_TFUNC) | |
7341 | value |= 1; | |
7342 | ||
7343 | if (r_type == R_ARM_MOVT_ABS || r_type == R_ARM_MOVT_PREL | |
7344 | || r_type == R_ARM_MOVT_BREL) | |
b6895b4f PB |
7345 | value >>= 16; |
7346 | ||
7347 | insn &= 0xfff0f000; | |
7348 | insn |= value & 0xfff; | |
7349 | insn |= (value & 0xf000) << 4; | |
7350 | bfd_put_32 (input_bfd, insn, hit_data); | |
7351 | } | |
7352 | return bfd_reloc_ok; | |
7353 | ||
7354 | case R_ARM_THM_MOVW_ABS_NC: | |
7355 | case R_ARM_THM_MOVT_ABS: | |
7356 | case R_ARM_THM_MOVW_PREL_NC: | |
7357 | case R_ARM_THM_MOVT_PREL: | |
92f5d02b MS |
7358 | /* Until we properly support segment-base-relative addressing then |
7359 | we assume the segment base to be zero, as for the above relocations. | |
7360 | Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as | |
7361 | R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics | |
7362 | as R_ARM_THM_MOVT_ABS. */ | |
7363 | case R_ARM_THM_MOVW_BREL_NC: | |
7364 | case R_ARM_THM_MOVW_BREL: | |
7365 | case R_ARM_THM_MOVT_BREL: | |
b6895b4f PB |
7366 | { |
7367 | bfd_vma insn; | |
906e58ca | 7368 | |
b6895b4f PB |
7369 | insn = bfd_get_16 (input_bfd, hit_data) << 16; |
7370 | insn |= bfd_get_16 (input_bfd, hit_data + 2); | |
7371 | ||
7372 | if (globals->use_rel) | |
7373 | { | |
7374 | addend = ((insn >> 4) & 0xf000) | |
7375 | | ((insn >> 15) & 0x0800) | |
7376 | | ((insn >> 4) & 0x0700) | |
7377 | | (insn & 0x00ff); | |
39623e12 | 7378 | signed_addend = (addend ^ 0x8000) - 0x8000; |
b6895b4f | 7379 | } |
92f5d02b | 7380 | |
b6895b4f | 7381 | value += signed_addend; |
b6895b4f PB |
7382 | |
7383 | if (r_type == R_ARM_THM_MOVW_PREL_NC || r_type == R_ARM_THM_MOVT_PREL) | |
7384 | value -= (input_section->output_section->vma | |
7385 | + input_section->output_offset + rel->r_offset); | |
7386 | ||
92f5d02b MS |
7387 | if (r_type == R_ARM_THM_MOVW_BREL && value >= 0x10000) |
7388 | return bfd_reloc_overflow; | |
7389 | ||
7390 | if (sym_flags == STT_ARM_TFUNC) | |
7391 | value |= 1; | |
7392 | ||
7393 | if (r_type == R_ARM_THM_MOVT_ABS || r_type == R_ARM_THM_MOVT_PREL | |
7394 | || r_type == R_ARM_THM_MOVT_BREL) | |
b6895b4f PB |
7395 | value >>= 16; |
7396 | ||
7397 | insn &= 0xfbf08f00; | |
7398 | insn |= (value & 0xf000) << 4; | |
7399 | insn |= (value & 0x0800) << 15; | |
7400 | insn |= (value & 0x0700) << 4; | |
7401 | insn |= (value & 0x00ff); | |
7402 | ||
7403 | bfd_put_16 (input_bfd, insn >> 16, hit_data); | |
7404 | bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2); | |
7405 | } | |
7406 | return bfd_reloc_ok; | |
7407 | ||
4962c51a MS |
7408 | case R_ARM_ALU_PC_G0_NC: |
7409 | case R_ARM_ALU_PC_G1_NC: | |
7410 | case R_ARM_ALU_PC_G0: | |
7411 | case R_ARM_ALU_PC_G1: | |
7412 | case R_ARM_ALU_PC_G2: | |
7413 | case R_ARM_ALU_SB_G0_NC: | |
7414 | case R_ARM_ALU_SB_G1_NC: | |
7415 | case R_ARM_ALU_SB_G0: | |
7416 | case R_ARM_ALU_SB_G1: | |
7417 | case R_ARM_ALU_SB_G2: | |
7418 | { | |
7419 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
7420 | bfd_vma pc = input_section->output_section->vma | |
7421 | + input_section->output_offset + rel->r_offset; | |
7422 | /* sb should be the origin of the *segment* containing the symbol. | |
7423 | It is not clear how to obtain this OS-dependent value, so we | |
7424 | make an arbitrary choice of zero. */ | |
7425 | bfd_vma sb = 0; | |
7426 | bfd_vma residual; | |
7427 | bfd_vma g_n; | |
7428 | bfd_signed_vma signed_value; | |
7429 | int group = 0; | |
7430 | ||
7431 | /* Determine which group of bits to select. */ | |
7432 | switch (r_type) | |
7433 | { | |
7434 | case R_ARM_ALU_PC_G0_NC: | |
7435 | case R_ARM_ALU_PC_G0: | |
7436 | case R_ARM_ALU_SB_G0_NC: | |
7437 | case R_ARM_ALU_SB_G0: | |
7438 | group = 0; | |
7439 | break; | |
7440 | ||
7441 | case R_ARM_ALU_PC_G1_NC: | |
7442 | case R_ARM_ALU_PC_G1: | |
7443 | case R_ARM_ALU_SB_G1_NC: | |
7444 | case R_ARM_ALU_SB_G1: | |
7445 | group = 1; | |
7446 | break; | |
7447 | ||
7448 | case R_ARM_ALU_PC_G2: | |
7449 | case R_ARM_ALU_SB_G2: | |
7450 | group = 2; | |
7451 | break; | |
7452 | ||
7453 | default: | |
906e58ca | 7454 | abort (); |
4962c51a MS |
7455 | } |
7456 | ||
7457 | /* If REL, extract the addend from the insn. If RELA, it will | |
7458 | have already been fetched for us. */ | |
7459 | if (globals->use_rel) | |
7460 | { | |
7461 | int negative; | |
7462 | bfd_vma constant = insn & 0xff; | |
7463 | bfd_vma rotation = (insn & 0xf00) >> 8; | |
7464 | ||
7465 | if (rotation == 0) | |
7466 | signed_addend = constant; | |
7467 | else | |
7468 | { | |
7469 | /* Compensate for the fact that in the instruction, the | |
7470 | rotation is stored in multiples of 2 bits. */ | |
7471 | rotation *= 2; | |
7472 | ||
7473 | /* Rotate "constant" right by "rotation" bits. */ | |
7474 | signed_addend = (constant >> rotation) | | |
7475 | (constant << (8 * sizeof (bfd_vma) - rotation)); | |
7476 | } | |
7477 | ||
7478 | /* Determine if the instruction is an ADD or a SUB. | |
7479 | (For REL, this determines the sign of the addend.) */ | |
7480 | negative = identify_add_or_sub (insn); | |
7481 | if (negative == 0) | |
7482 | { | |
7483 | (*_bfd_error_handler) | |
7484 | (_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"), | |
7485 | input_bfd, input_section, | |
7486 | (long) rel->r_offset, howto->name); | |
906e58ca | 7487 | return bfd_reloc_overflow; |
4962c51a MS |
7488 | } |
7489 | ||
7490 | signed_addend *= negative; | |
7491 | } | |
7492 | ||
7493 | /* Compute the value (X) to go in the place. */ | |
7494 | if (r_type == R_ARM_ALU_PC_G0_NC | |
7495 | || r_type == R_ARM_ALU_PC_G1_NC | |
7496 | || r_type == R_ARM_ALU_PC_G0 | |
7497 | || r_type == R_ARM_ALU_PC_G1 | |
7498 | || r_type == R_ARM_ALU_PC_G2) | |
7499 | /* PC relative. */ | |
7500 | signed_value = value - pc + signed_addend; | |
7501 | else | |
7502 | /* Section base relative. */ | |
7503 | signed_value = value - sb + signed_addend; | |
7504 | ||
7505 | /* If the target symbol is a Thumb function, then set the | |
7506 | Thumb bit in the address. */ | |
7507 | if (sym_flags == STT_ARM_TFUNC) | |
7508 | signed_value |= 1; | |
7509 | ||
7510 | /* Calculate the value of the relevant G_n, in encoded | |
7511 | constant-with-rotation format. */ | |
7512 | g_n = calculate_group_reloc_mask (abs (signed_value), group, | |
7513 | &residual); | |
7514 | ||
7515 | /* Check for overflow if required. */ | |
7516 | if ((r_type == R_ARM_ALU_PC_G0 | |
7517 | || r_type == R_ARM_ALU_PC_G1 | |
7518 | || r_type == R_ARM_ALU_PC_G2 | |
7519 | || r_type == R_ARM_ALU_SB_G0 | |
7520 | || r_type == R_ARM_ALU_SB_G1 | |
7521 | || r_type == R_ARM_ALU_SB_G2) && residual != 0) | |
7522 | { | |
7523 | (*_bfd_error_handler) | |
7524 | (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"), | |
7525 | input_bfd, input_section, | |
7526 | (long) rel->r_offset, abs (signed_value), howto->name); | |
7527 | return bfd_reloc_overflow; | |
7528 | } | |
7529 | ||
7530 | /* Mask out the value and the ADD/SUB part of the opcode; take care | |
7531 | not to destroy the S bit. */ | |
7532 | insn &= 0xff1ff000; | |
7533 | ||
7534 | /* Set the opcode according to whether the value to go in the | |
7535 | place is negative. */ | |
7536 | if (signed_value < 0) | |
7537 | insn |= 1 << 22; | |
7538 | else | |
7539 | insn |= 1 << 23; | |
7540 | ||
7541 | /* Encode the offset. */ | |
7542 | insn |= g_n; | |
7543 | ||
7544 | bfd_put_32 (input_bfd, insn, hit_data); | |
7545 | } | |
7546 | return bfd_reloc_ok; | |
7547 | ||
7548 | case R_ARM_LDR_PC_G0: | |
7549 | case R_ARM_LDR_PC_G1: | |
7550 | case R_ARM_LDR_PC_G2: | |
7551 | case R_ARM_LDR_SB_G0: | |
7552 | case R_ARM_LDR_SB_G1: | |
7553 | case R_ARM_LDR_SB_G2: | |
7554 | { | |
7555 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
7556 | bfd_vma pc = input_section->output_section->vma | |
7557 | + input_section->output_offset + rel->r_offset; | |
7558 | bfd_vma sb = 0; /* See note above. */ | |
7559 | bfd_vma residual; | |
7560 | bfd_signed_vma signed_value; | |
7561 | int group = 0; | |
7562 | ||
7563 | /* Determine which groups of bits to calculate. */ | |
7564 | switch (r_type) | |
7565 | { | |
7566 | case R_ARM_LDR_PC_G0: | |
7567 | case R_ARM_LDR_SB_G0: | |
7568 | group = 0; | |
7569 | break; | |
7570 | ||
7571 | case R_ARM_LDR_PC_G1: | |
7572 | case R_ARM_LDR_SB_G1: | |
7573 | group = 1; | |
7574 | break; | |
7575 | ||
7576 | case R_ARM_LDR_PC_G2: | |
7577 | case R_ARM_LDR_SB_G2: | |
7578 | group = 2; | |
7579 | break; | |
7580 | ||
7581 | default: | |
906e58ca | 7582 | abort (); |
4962c51a MS |
7583 | } |
7584 | ||
7585 | /* If REL, extract the addend from the insn. If RELA, it will | |
7586 | have already been fetched for us. */ | |
7587 | if (globals->use_rel) | |
7588 | { | |
7589 | int negative = (insn & (1 << 23)) ? 1 : -1; | |
7590 | signed_addend = negative * (insn & 0xfff); | |
7591 | } | |
7592 | ||
7593 | /* Compute the value (X) to go in the place. */ | |
7594 | if (r_type == R_ARM_LDR_PC_G0 | |
7595 | || r_type == R_ARM_LDR_PC_G1 | |
7596 | || r_type == R_ARM_LDR_PC_G2) | |
7597 | /* PC relative. */ | |
7598 | signed_value = value - pc + signed_addend; | |
7599 | else | |
7600 | /* Section base relative. */ | |
7601 | signed_value = value - sb + signed_addend; | |
7602 | ||
7603 | /* Calculate the value of the relevant G_{n-1} to obtain | |
7604 | the residual at that stage. */ | |
7605 | calculate_group_reloc_mask (abs (signed_value), group - 1, &residual); | |
7606 | ||
7607 | /* Check for overflow. */ | |
7608 | if (residual >= 0x1000) | |
7609 | { | |
7610 | (*_bfd_error_handler) | |
7611 | (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"), | |
7612 | input_bfd, input_section, | |
7613 | (long) rel->r_offset, abs (signed_value), howto->name); | |
7614 | return bfd_reloc_overflow; | |
7615 | } | |
7616 | ||
7617 | /* Mask out the value and U bit. */ | |
7618 | insn &= 0xff7ff000; | |
7619 | ||
7620 | /* Set the U bit if the value to go in the place is non-negative. */ | |
7621 | if (signed_value >= 0) | |
7622 | insn |= 1 << 23; | |
7623 | ||
7624 | /* Encode the offset. */ | |
7625 | insn |= residual; | |
7626 | ||
7627 | bfd_put_32 (input_bfd, insn, hit_data); | |
7628 | } | |
7629 | return bfd_reloc_ok; | |
7630 | ||
7631 | case R_ARM_LDRS_PC_G0: | |
7632 | case R_ARM_LDRS_PC_G1: | |
7633 | case R_ARM_LDRS_PC_G2: | |
7634 | case R_ARM_LDRS_SB_G0: | |
7635 | case R_ARM_LDRS_SB_G1: | |
7636 | case R_ARM_LDRS_SB_G2: | |
7637 | { | |
7638 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
7639 | bfd_vma pc = input_section->output_section->vma | |
7640 | + input_section->output_offset + rel->r_offset; | |
7641 | bfd_vma sb = 0; /* See note above. */ | |
7642 | bfd_vma residual; | |
7643 | bfd_signed_vma signed_value; | |
7644 | int group = 0; | |
7645 | ||
7646 | /* Determine which groups of bits to calculate. */ | |
7647 | switch (r_type) | |
7648 | { | |
7649 | case R_ARM_LDRS_PC_G0: | |
7650 | case R_ARM_LDRS_SB_G0: | |
7651 | group = 0; | |
7652 | break; | |
7653 | ||
7654 | case R_ARM_LDRS_PC_G1: | |
7655 | case R_ARM_LDRS_SB_G1: | |
7656 | group = 1; | |
7657 | break; | |
7658 | ||
7659 | case R_ARM_LDRS_PC_G2: | |
7660 | case R_ARM_LDRS_SB_G2: | |
7661 | group = 2; | |
7662 | break; | |
7663 | ||
7664 | default: | |
906e58ca | 7665 | abort (); |
4962c51a MS |
7666 | } |
7667 | ||
7668 | /* If REL, extract the addend from the insn. If RELA, it will | |
7669 | have already been fetched for us. */ | |
7670 | if (globals->use_rel) | |
7671 | { | |
7672 | int negative = (insn & (1 << 23)) ? 1 : -1; | |
7673 | signed_addend = negative * (((insn & 0xf00) >> 4) + (insn & 0xf)); | |
7674 | } | |
7675 | ||
7676 | /* Compute the value (X) to go in the place. */ | |
7677 | if (r_type == R_ARM_LDRS_PC_G0 | |
7678 | || r_type == R_ARM_LDRS_PC_G1 | |
7679 | || r_type == R_ARM_LDRS_PC_G2) | |
7680 | /* PC relative. */ | |
7681 | signed_value = value - pc + signed_addend; | |
7682 | else | |
7683 | /* Section base relative. */ | |
7684 | signed_value = value - sb + signed_addend; | |
7685 | ||
7686 | /* Calculate the value of the relevant G_{n-1} to obtain | |
7687 | the residual at that stage. */ | |
7688 | calculate_group_reloc_mask (abs (signed_value), group - 1, &residual); | |
7689 | ||
7690 | /* Check for overflow. */ | |
7691 | if (residual >= 0x100) | |
7692 | { | |
7693 | (*_bfd_error_handler) | |
7694 | (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"), | |
7695 | input_bfd, input_section, | |
7696 | (long) rel->r_offset, abs (signed_value), howto->name); | |
7697 | return bfd_reloc_overflow; | |
7698 | } | |
7699 | ||
7700 | /* Mask out the value and U bit. */ | |
7701 | insn &= 0xff7ff0f0; | |
7702 | ||
7703 | /* Set the U bit if the value to go in the place is non-negative. */ | |
7704 | if (signed_value >= 0) | |
7705 | insn |= 1 << 23; | |
7706 | ||
7707 | /* Encode the offset. */ | |
7708 | insn |= ((residual & 0xf0) << 4) | (residual & 0xf); | |
7709 | ||
7710 | bfd_put_32 (input_bfd, insn, hit_data); | |
7711 | } | |
7712 | return bfd_reloc_ok; | |
7713 | ||
7714 | case R_ARM_LDC_PC_G0: | |
7715 | case R_ARM_LDC_PC_G1: | |
7716 | case R_ARM_LDC_PC_G2: | |
7717 | case R_ARM_LDC_SB_G0: | |
7718 | case R_ARM_LDC_SB_G1: | |
7719 | case R_ARM_LDC_SB_G2: | |
7720 | { | |
7721 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
7722 | bfd_vma pc = input_section->output_section->vma | |
7723 | + input_section->output_offset + rel->r_offset; | |
7724 | bfd_vma sb = 0; /* See note above. */ | |
7725 | bfd_vma residual; | |
7726 | bfd_signed_vma signed_value; | |
7727 | int group = 0; | |
7728 | ||
7729 | /* Determine which groups of bits to calculate. */ | |
7730 | switch (r_type) | |
7731 | { | |
7732 | case R_ARM_LDC_PC_G0: | |
7733 | case R_ARM_LDC_SB_G0: | |
7734 | group = 0; | |
7735 | break; | |
7736 | ||
7737 | case R_ARM_LDC_PC_G1: | |
7738 | case R_ARM_LDC_SB_G1: | |
7739 | group = 1; | |
7740 | break; | |
7741 | ||
7742 | case R_ARM_LDC_PC_G2: | |
7743 | case R_ARM_LDC_SB_G2: | |
7744 | group = 2; | |
7745 | break; | |
7746 | ||
7747 | default: | |
906e58ca | 7748 | abort (); |
4962c51a MS |
7749 | } |
7750 | ||
7751 | /* If REL, extract the addend from the insn. If RELA, it will | |
7752 | have already been fetched for us. */ | |
7753 | if (globals->use_rel) | |
7754 | { | |
7755 | int negative = (insn & (1 << 23)) ? 1 : -1; | |
7756 | signed_addend = negative * ((insn & 0xff) << 2); | |
7757 | } | |
7758 | ||
7759 | /* Compute the value (X) to go in the place. */ | |
7760 | if (r_type == R_ARM_LDC_PC_G0 | |
7761 | || r_type == R_ARM_LDC_PC_G1 | |
7762 | || r_type == R_ARM_LDC_PC_G2) | |
7763 | /* PC relative. */ | |
7764 | signed_value = value - pc + signed_addend; | |
7765 | else | |
7766 | /* Section base relative. */ | |
7767 | signed_value = value - sb + signed_addend; | |
7768 | ||
7769 | /* Calculate the value of the relevant G_{n-1} to obtain | |
7770 | the residual at that stage. */ | |
7771 | calculate_group_reloc_mask (abs (signed_value), group - 1, &residual); | |
7772 | ||
7773 | /* Check for overflow. (The absolute value to go in the place must be | |
7774 | divisible by four and, after having been divided by four, must | |
7775 | fit in eight bits.) */ | |
7776 | if ((residual & 0x3) != 0 || residual >= 0x400) | |
7777 | { | |
7778 | (*_bfd_error_handler) | |
7779 | (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"), | |
7780 | input_bfd, input_section, | |
7781 | (long) rel->r_offset, abs (signed_value), howto->name); | |
7782 | return bfd_reloc_overflow; | |
7783 | } | |
7784 | ||
7785 | /* Mask out the value and U bit. */ | |
7786 | insn &= 0xff7fff00; | |
7787 | ||
7788 | /* Set the U bit if the value to go in the place is non-negative. */ | |
7789 | if (signed_value >= 0) | |
7790 | insn |= 1 << 23; | |
7791 | ||
7792 | /* Encode the offset. */ | |
7793 | insn |= residual >> 2; | |
7794 | ||
7795 | bfd_put_32 (input_bfd, insn, hit_data); | |
7796 | } | |
7797 | return bfd_reloc_ok; | |
7798 | ||
252b5132 RH |
7799 | default: |
7800 | return bfd_reloc_notsupported; | |
7801 | } | |
7802 | } | |
7803 | ||
98c1d4aa NC |
7804 | /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */ |
7805 | static void | |
57e8b36a NC |
7806 | arm_add_to_rel (bfd * abfd, |
7807 | bfd_byte * address, | |
7808 | reloc_howto_type * howto, | |
7809 | bfd_signed_vma increment) | |
98c1d4aa | 7810 | { |
98c1d4aa NC |
7811 | bfd_signed_vma addend; |
7812 | ||
bd97cb95 DJ |
7813 | if (howto->type == R_ARM_THM_CALL |
7814 | || howto->type == R_ARM_THM_JUMP24) | |
98c1d4aa | 7815 | { |
9a5aca8c AM |
7816 | int upper_insn, lower_insn; |
7817 | int upper, lower; | |
98c1d4aa | 7818 | |
9a5aca8c AM |
7819 | upper_insn = bfd_get_16 (abfd, address); |
7820 | lower_insn = bfd_get_16 (abfd, address + 2); | |
7821 | upper = upper_insn & 0x7ff; | |
7822 | lower = lower_insn & 0x7ff; | |
7823 | ||
7824 | addend = (upper << 12) | (lower << 1); | |
ddda4409 | 7825 | addend += increment; |
9a5aca8c | 7826 | addend >>= 1; |
98c1d4aa | 7827 | |
9a5aca8c AM |
7828 | upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff); |
7829 | lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff); | |
7830 | ||
dc810e39 AM |
7831 | bfd_put_16 (abfd, (bfd_vma) upper_insn, address); |
7832 | bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2); | |
9a5aca8c AM |
7833 | } |
7834 | else | |
7835 | { | |
7836 | bfd_vma contents; | |
7837 | ||
7838 | contents = bfd_get_32 (abfd, address); | |
7839 | ||
7840 | /* Get the (signed) value from the instruction. */ | |
7841 | addend = contents & howto->src_mask; | |
7842 | if (addend & ((howto->src_mask + 1) >> 1)) | |
7843 | { | |
7844 | bfd_signed_vma mask; | |
7845 | ||
7846 | mask = -1; | |
7847 | mask &= ~ howto->src_mask; | |
7848 | addend |= mask; | |
7849 | } | |
7850 | ||
7851 | /* Add in the increment, (which is a byte value). */ | |
7852 | switch (howto->type) | |
7853 | { | |
7854 | default: | |
7855 | addend += increment; | |
7856 | break; | |
7857 | ||
7858 | case R_ARM_PC24: | |
c6596c5e | 7859 | case R_ARM_PLT32: |
5b5bb741 PB |
7860 | case R_ARM_CALL: |
7861 | case R_ARM_JUMP24: | |
9a5aca8c | 7862 | addend <<= howto->size; |
dc810e39 | 7863 | addend += increment; |
9a5aca8c AM |
7864 | |
7865 | /* Should we check for overflow here ? */ | |
7866 | ||
7867 | /* Drop any undesired bits. */ | |
7868 | addend >>= howto->rightshift; | |
7869 | break; | |
7870 | } | |
7871 | ||
7872 | contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask); | |
7873 | ||
7874 | bfd_put_32 (abfd, contents, address); | |
ddda4409 | 7875 | } |
98c1d4aa | 7876 | } |
252b5132 | 7877 | |
ba93b8ac DJ |
7878 | #define IS_ARM_TLS_RELOC(R_TYPE) \ |
7879 | ((R_TYPE) == R_ARM_TLS_GD32 \ | |
7880 | || (R_TYPE) == R_ARM_TLS_LDO32 \ | |
7881 | || (R_TYPE) == R_ARM_TLS_LDM32 \ | |
7882 | || (R_TYPE) == R_ARM_TLS_DTPOFF32 \ | |
7883 | || (R_TYPE) == R_ARM_TLS_DTPMOD32 \ | |
7884 | || (R_TYPE) == R_ARM_TLS_TPOFF32 \ | |
7885 | || (R_TYPE) == R_ARM_TLS_LE32 \ | |
7886 | || (R_TYPE) == R_ARM_TLS_IE32) | |
7887 | ||
252b5132 | 7888 | /* Relocate an ARM ELF section. */ |
906e58ca | 7889 | |
b34976b6 | 7890 | static bfd_boolean |
57e8b36a NC |
7891 | elf32_arm_relocate_section (bfd * output_bfd, |
7892 | struct bfd_link_info * info, | |
7893 | bfd * input_bfd, | |
7894 | asection * input_section, | |
7895 | bfd_byte * contents, | |
7896 | Elf_Internal_Rela * relocs, | |
7897 | Elf_Internal_Sym * local_syms, | |
7898 | asection ** local_sections) | |
252b5132 | 7899 | { |
b34976b6 AM |
7900 | Elf_Internal_Shdr *symtab_hdr; |
7901 | struct elf_link_hash_entry **sym_hashes; | |
7902 | Elf_Internal_Rela *rel; | |
7903 | Elf_Internal_Rela *relend; | |
7904 | const char *name; | |
b32d3aa2 | 7905 | struct elf32_arm_link_hash_table * globals; |
252b5132 | 7906 | |
4e7fd91e | 7907 | globals = elf32_arm_hash_table (info); |
b491616a | 7908 | |
0ffa91dd | 7909 | symtab_hdr = & elf_symtab_hdr (input_bfd); |
252b5132 RH |
7910 | sym_hashes = elf_sym_hashes (input_bfd); |
7911 | ||
7912 | rel = relocs; | |
7913 | relend = relocs + input_section->reloc_count; | |
7914 | for (; rel < relend; rel++) | |
7915 | { | |
ba96a88f NC |
7916 | int r_type; |
7917 | reloc_howto_type * howto; | |
7918 | unsigned long r_symndx; | |
7919 | Elf_Internal_Sym * sym; | |
7920 | asection * sec; | |
252b5132 | 7921 | struct elf_link_hash_entry * h; |
ba96a88f NC |
7922 | bfd_vma relocation; |
7923 | bfd_reloc_status_type r; | |
7924 | arelent bfd_reloc; | |
ba93b8ac | 7925 | char sym_type; |
0945cdfd | 7926 | bfd_boolean unresolved_reloc = FALSE; |
f2a9dd69 | 7927 | char *error_message = NULL; |
f21f3fe0 | 7928 | |
252b5132 | 7929 | r_symndx = ELF32_R_SYM (rel->r_info); |
ba96a88f | 7930 | r_type = ELF32_R_TYPE (rel->r_info); |
b32d3aa2 | 7931 | r_type = arm_real_reloc_type (globals, r_type); |
252b5132 | 7932 | |
ba96a88f NC |
7933 | if ( r_type == R_ARM_GNU_VTENTRY |
7934 | || r_type == R_ARM_GNU_VTINHERIT) | |
252b5132 RH |
7935 | continue; |
7936 | ||
b32d3aa2 | 7937 | bfd_reloc.howto = elf32_arm_howto_from_type (r_type); |
ba96a88f | 7938 | howto = bfd_reloc.howto; |
252b5132 | 7939 | |
252b5132 RH |
7940 | h = NULL; |
7941 | sym = NULL; | |
7942 | sec = NULL; | |
9b485d32 | 7943 | |
252b5132 RH |
7944 | if (r_symndx < symtab_hdr->sh_info) |
7945 | { | |
7946 | sym = local_syms + r_symndx; | |
ba93b8ac | 7947 | sym_type = ELF32_ST_TYPE (sym->st_info); |
252b5132 | 7948 | sec = local_sections[r_symndx]; |
4e7fd91e | 7949 | if (globals->use_rel) |
f8df10f4 | 7950 | { |
4e7fd91e PB |
7951 | relocation = (sec->output_section->vma |
7952 | + sec->output_offset | |
7953 | + sym->st_value); | |
ab96bf03 AM |
7954 | if (!info->relocatable |
7955 | && (sec->flags & SEC_MERGE) | |
7956 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
f8df10f4 | 7957 | { |
4e7fd91e PB |
7958 | asection *msec; |
7959 | bfd_vma addend, value; | |
7960 | ||
39623e12 | 7961 | switch (r_type) |
4e7fd91e | 7962 | { |
39623e12 PB |
7963 | case R_ARM_MOVW_ABS_NC: |
7964 | case R_ARM_MOVT_ABS: | |
7965 | value = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
7966 | addend = ((value & 0xf0000) >> 4) | (value & 0xfff); | |
7967 | addend = (addend ^ 0x8000) - 0x8000; | |
7968 | break; | |
f8df10f4 | 7969 | |
39623e12 PB |
7970 | case R_ARM_THM_MOVW_ABS_NC: |
7971 | case R_ARM_THM_MOVT_ABS: | |
7972 | value = bfd_get_16 (input_bfd, contents + rel->r_offset) | |
7973 | << 16; | |
7974 | value |= bfd_get_16 (input_bfd, | |
7975 | contents + rel->r_offset + 2); | |
7976 | addend = ((value & 0xf7000) >> 4) | (value & 0xff) | |
7977 | | ((value & 0x04000000) >> 15); | |
7978 | addend = (addend ^ 0x8000) - 0x8000; | |
7979 | break; | |
f8df10f4 | 7980 | |
39623e12 PB |
7981 | default: |
7982 | if (howto->rightshift | |
7983 | || (howto->src_mask & (howto->src_mask + 1))) | |
7984 | { | |
7985 | (*_bfd_error_handler) | |
7986 | (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"), | |
7987 | input_bfd, input_section, | |
7988 | (long) rel->r_offset, howto->name); | |
7989 | return FALSE; | |
7990 | } | |
7991 | ||
7992 | value = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
7993 | ||
7994 | /* Get the (signed) value from the instruction. */ | |
7995 | addend = value & howto->src_mask; | |
7996 | if (addend & ((howto->src_mask + 1) >> 1)) | |
7997 | { | |
7998 | bfd_signed_vma mask; | |
7999 | ||
8000 | mask = -1; | |
8001 | mask &= ~ howto->src_mask; | |
8002 | addend |= mask; | |
8003 | } | |
8004 | break; | |
4e7fd91e | 8005 | } |
39623e12 | 8006 | |
4e7fd91e PB |
8007 | msec = sec; |
8008 | addend = | |
8009 | _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend) | |
8010 | - relocation; | |
8011 | addend += msec->output_section->vma + msec->output_offset; | |
39623e12 PB |
8012 | |
8013 | /* Cases here must match those in the preceeding | |
8014 | switch statement. */ | |
8015 | switch (r_type) | |
8016 | { | |
8017 | case R_ARM_MOVW_ABS_NC: | |
8018 | case R_ARM_MOVT_ABS: | |
8019 | value = (value & 0xfff0f000) | ((addend & 0xf000) << 4) | |
8020 | | (addend & 0xfff); | |
8021 | bfd_put_32 (input_bfd, value, contents + rel->r_offset); | |
8022 | break; | |
8023 | ||
8024 | case R_ARM_THM_MOVW_ABS_NC: | |
8025 | case R_ARM_THM_MOVT_ABS: | |
8026 | value = (value & 0xfbf08f00) | ((addend & 0xf700) << 4) | |
8027 | | (addend & 0xff) | ((addend & 0x0800) << 15); | |
8028 | bfd_put_16 (input_bfd, value >> 16, | |
8029 | contents + rel->r_offset); | |
8030 | bfd_put_16 (input_bfd, value, | |
8031 | contents + rel->r_offset + 2); | |
8032 | break; | |
8033 | ||
8034 | default: | |
8035 | value = (value & ~ howto->dst_mask) | |
8036 | | (addend & howto->dst_mask); | |
8037 | bfd_put_32 (input_bfd, value, contents + rel->r_offset); | |
8038 | break; | |
8039 | } | |
f8df10f4 | 8040 | } |
f8df10f4 | 8041 | } |
4e7fd91e PB |
8042 | else |
8043 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
252b5132 RH |
8044 | } |
8045 | else | |
8046 | { | |
560e09e9 | 8047 | bfd_boolean warned; |
560e09e9 | 8048 | |
b2a8e766 AM |
8049 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
8050 | r_symndx, symtab_hdr, sym_hashes, | |
8051 | h, sec, relocation, | |
8052 | unresolved_reloc, warned); | |
ba93b8ac DJ |
8053 | |
8054 | sym_type = h->type; | |
252b5132 RH |
8055 | } |
8056 | ||
ab96bf03 AM |
8057 | if (sec != NULL && elf_discarded_section (sec)) |
8058 | { | |
8059 | /* For relocs against symbols from removed linkonce sections, | |
8060 | or sections discarded by a linker script, we just want the | |
8061 | section contents zeroed. Avoid any special processing. */ | |
8062 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); | |
8063 | rel->r_info = 0; | |
8064 | rel->r_addend = 0; | |
8065 | continue; | |
8066 | } | |
8067 | ||
8068 | if (info->relocatable) | |
8069 | { | |
8070 | /* This is a relocatable link. We don't have to change | |
8071 | anything, unless the reloc is against a section symbol, | |
8072 | in which case we have to adjust according to where the | |
8073 | section symbol winds up in the output section. */ | |
8074 | if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
8075 | { | |
8076 | if (globals->use_rel) | |
8077 | arm_add_to_rel (input_bfd, contents + rel->r_offset, | |
8078 | howto, (bfd_signed_vma) sec->output_offset); | |
8079 | else | |
8080 | rel->r_addend += sec->output_offset; | |
8081 | } | |
8082 | continue; | |
8083 | } | |
8084 | ||
252b5132 RH |
8085 | if (h != NULL) |
8086 | name = h->root.root.string; | |
8087 | else | |
8088 | { | |
8089 | name = (bfd_elf_string_from_elf_section | |
8090 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
8091 | if (name == NULL || *name == '\0') | |
8092 | name = bfd_section_name (input_bfd, sec); | |
8093 | } | |
f21f3fe0 | 8094 | |
ba93b8ac DJ |
8095 | if (r_symndx != 0 |
8096 | && r_type != R_ARM_NONE | |
8097 | && (h == NULL | |
8098 | || h->root.type == bfd_link_hash_defined | |
8099 | || h->root.type == bfd_link_hash_defweak) | |
8100 | && IS_ARM_TLS_RELOC (r_type) != (sym_type == STT_TLS)) | |
8101 | { | |
8102 | (*_bfd_error_handler) | |
8103 | ((sym_type == STT_TLS | |
8104 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") | |
8105 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")), | |
8106 | input_bfd, | |
8107 | input_section, | |
8108 | (long) rel->r_offset, | |
8109 | howto->name, | |
8110 | name); | |
8111 | } | |
8112 | ||
252b5132 RH |
8113 | r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd, |
8114 | input_section, contents, rel, | |
8115 | relocation, info, sec, name, | |
8116 | (h ? ELF_ST_TYPE (h->type) : | |
0945cdfd | 8117 | ELF_ST_TYPE (sym->st_info)), h, |
f2a9dd69 | 8118 | &unresolved_reloc, &error_message); |
0945cdfd DJ |
8119 | |
8120 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections | |
8121 | because such sections are not SEC_ALLOC and thus ld.so will | |
8122 | not process them. */ | |
8123 | if (unresolved_reloc | |
8124 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
8125 | && h->def_dynamic)) | |
8126 | { | |
8127 | (*_bfd_error_handler) | |
843fe662 L |
8128 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
8129 | input_bfd, | |
8130 | input_section, | |
8131 | (long) rel->r_offset, | |
8132 | howto->name, | |
8133 | h->root.root.string); | |
0945cdfd DJ |
8134 | return FALSE; |
8135 | } | |
252b5132 RH |
8136 | |
8137 | if (r != bfd_reloc_ok) | |
8138 | { | |
252b5132 RH |
8139 | switch (r) |
8140 | { | |
8141 | case bfd_reloc_overflow: | |
cf919dfd PB |
8142 | /* If the overflowing reloc was to an undefined symbol, |
8143 | we have already printed one error message and there | |
8144 | is no point complaining again. */ | |
8145 | if ((! h || | |
8146 | h->root.type != bfd_link_hash_undefined) | |
8147 | && (!((*info->callbacks->reloc_overflow) | |
dfeffb9f L |
8148 | (info, (h ? &h->root : NULL), name, howto->name, |
8149 | (bfd_vma) 0, input_bfd, input_section, | |
8150 | rel->r_offset)))) | |
b34976b6 | 8151 | return FALSE; |
252b5132 RH |
8152 | break; |
8153 | ||
8154 | case bfd_reloc_undefined: | |
8155 | if (!((*info->callbacks->undefined_symbol) | |
8156 | (info, name, input_bfd, input_section, | |
b34976b6 AM |
8157 | rel->r_offset, TRUE))) |
8158 | return FALSE; | |
252b5132 RH |
8159 | break; |
8160 | ||
8161 | case bfd_reloc_outofrange: | |
f2a9dd69 | 8162 | error_message = _("out of range"); |
252b5132 RH |
8163 | goto common_error; |
8164 | ||
8165 | case bfd_reloc_notsupported: | |
f2a9dd69 | 8166 | error_message = _("unsupported relocation"); |
252b5132 RH |
8167 | goto common_error; |
8168 | ||
8169 | case bfd_reloc_dangerous: | |
f2a9dd69 | 8170 | /* error_message should already be set. */ |
252b5132 RH |
8171 | goto common_error; |
8172 | ||
8173 | default: | |
f2a9dd69 | 8174 | error_message = _("unknown error"); |
8029a119 | 8175 | /* Fall through. */ |
252b5132 RH |
8176 | |
8177 | common_error: | |
f2a9dd69 DJ |
8178 | BFD_ASSERT (error_message != NULL); |
8179 | if (!((*info->callbacks->reloc_dangerous) | |
8180 | (info, error_message, input_bfd, input_section, | |
252b5132 | 8181 | rel->r_offset))) |
b34976b6 | 8182 | return FALSE; |
252b5132 RH |
8183 | break; |
8184 | } | |
8185 | } | |
8186 | } | |
8187 | ||
b34976b6 | 8188 | return TRUE; |
252b5132 RH |
8189 | } |
8190 | ||
2468f9c9 PB |
8191 | /* Add a new unwind edit to the list described by HEAD, TAIL. If INDEX is zero, |
8192 | adds the edit to the start of the list. (The list must be built in order of | |
8193 | ascending INDEX: the function's callers are primarily responsible for | |
8194 | maintaining that condition). */ | |
8195 | ||
8196 | static void | |
8197 | add_unwind_table_edit (arm_unwind_table_edit **head, | |
8198 | arm_unwind_table_edit **tail, | |
8199 | arm_unwind_edit_type type, | |
8200 | asection *linked_section, | |
8201 | unsigned int index) | |
8202 | { | |
8203 | arm_unwind_table_edit *new_edit = xmalloc (sizeof (arm_unwind_table_edit)); | |
8204 | ||
8205 | new_edit->type = type; | |
8206 | new_edit->linked_section = linked_section; | |
8207 | new_edit->index = index; | |
8208 | ||
8209 | if (index > 0) | |
8210 | { | |
8211 | new_edit->next = NULL; | |
8212 | ||
8213 | if (*tail) | |
8214 | (*tail)->next = new_edit; | |
8215 | ||
8216 | (*tail) = new_edit; | |
8217 | ||
8218 | if (!*head) | |
8219 | (*head) = new_edit; | |
8220 | } | |
8221 | else | |
8222 | { | |
8223 | new_edit->next = *head; | |
8224 | ||
8225 | if (!*tail) | |
8226 | *tail = new_edit; | |
8227 | ||
8228 | *head = new_edit; | |
8229 | } | |
8230 | } | |
8231 | ||
8232 | static _arm_elf_section_data *get_arm_elf_section_data (asection *); | |
8233 | ||
8234 | /* Increase the size of EXIDX_SEC by ADJUST bytes. ADJUST mau be negative. */ | |
8235 | static void | |
8236 | adjust_exidx_size(asection *exidx_sec, int adjust) | |
8237 | { | |
8238 | asection *out_sec; | |
8239 | ||
8240 | if (!exidx_sec->rawsize) | |
8241 | exidx_sec->rawsize = exidx_sec->size; | |
8242 | ||
8243 | bfd_set_section_size (exidx_sec->owner, exidx_sec, exidx_sec->size + adjust); | |
8244 | out_sec = exidx_sec->output_section; | |
8245 | /* Adjust size of output section. */ | |
8246 | bfd_set_section_size (out_sec->owner, out_sec, out_sec->size +adjust); | |
8247 | } | |
8248 | ||
8249 | /* Insert an EXIDX_CANTUNWIND marker at the end of a section. */ | |
8250 | static void | |
8251 | insert_cantunwind_after(asection *text_sec, asection *exidx_sec) | |
8252 | { | |
8253 | struct _arm_elf_section_data *exidx_arm_data; | |
8254 | ||
8255 | exidx_arm_data = get_arm_elf_section_data (exidx_sec); | |
8256 | add_unwind_table_edit ( | |
8257 | &exidx_arm_data->u.exidx.unwind_edit_list, | |
8258 | &exidx_arm_data->u.exidx.unwind_edit_tail, | |
8259 | INSERT_EXIDX_CANTUNWIND_AT_END, text_sec, UINT_MAX); | |
8260 | ||
8261 | adjust_exidx_size(exidx_sec, 8); | |
8262 | } | |
8263 | ||
8264 | /* Scan .ARM.exidx tables, and create a list describing edits which should be | |
8265 | made to those tables, such that: | |
8266 | ||
8267 | 1. Regions without unwind data are marked with EXIDX_CANTUNWIND entries. | |
8268 | 2. Duplicate entries are merged together (EXIDX_CANTUNWIND, or unwind | |
8269 | codes which have been inlined into the index). | |
8270 | ||
8271 | The edits are applied when the tables are written | |
8272 | (in elf32_arm_write_section). | |
8273 | */ | |
8274 | ||
8275 | bfd_boolean | |
8276 | elf32_arm_fix_exidx_coverage (asection **text_section_order, | |
8277 | unsigned int num_text_sections, | |
8278 | struct bfd_link_info *info) | |
8279 | { | |
8280 | bfd *inp; | |
8281 | unsigned int last_second_word = 0, i; | |
8282 | asection *last_exidx_sec = NULL; | |
8283 | asection *last_text_sec = NULL; | |
8284 | int last_unwind_type = -1; | |
8285 | ||
8286 | /* Walk over all EXIDX sections, and create backlinks from the corrsponding | |
8287 | text sections. */ | |
8288 | for (inp = info->input_bfds; inp != NULL; inp = inp->link_next) | |
8289 | { | |
8290 | asection *sec; | |
8291 | ||
8292 | for (sec = inp->sections; sec != NULL; sec = sec->next) | |
8293 | { | |
8294 | struct bfd_elf_section_data *elf_sec = elf_section_data (sec); | |
8295 | Elf_Internal_Shdr *hdr = &elf_sec->this_hdr; | |
8296 | ||
8297 | if (hdr->sh_type != SHT_ARM_EXIDX) | |
8298 | continue; | |
8299 | ||
8300 | if (elf_sec->linked_to) | |
8301 | { | |
8302 | Elf_Internal_Shdr *linked_hdr | |
8303 | = &elf_section_data (elf_sec->linked_to)->this_hdr; | |
8304 | struct _arm_elf_section_data *linked_sec_arm_data | |
8305 | = get_arm_elf_section_data (linked_hdr->bfd_section); | |
8306 | ||
8307 | if (linked_sec_arm_data == NULL) | |
8308 | continue; | |
8309 | ||
8310 | /* Link this .ARM.exidx section back from the text section it | |
8311 | describes. */ | |
8312 | linked_sec_arm_data->u.text.arm_exidx_sec = sec; | |
8313 | } | |
8314 | } | |
8315 | } | |
8316 | ||
8317 | /* Walk all text sections in order of increasing VMA. Eilminate duplicate | |
8318 | index table entries (EXIDX_CANTUNWIND and inlined unwind opcodes), | |
8319 | and add EXIDX_CANTUNWIND entries for sections with no unwind table data. | |
8320 | */ | |
8321 | ||
8322 | for (i = 0; i < num_text_sections; i++) | |
8323 | { | |
8324 | asection *sec = text_section_order[i]; | |
8325 | asection *exidx_sec; | |
8326 | struct _arm_elf_section_data *arm_data = get_arm_elf_section_data (sec); | |
8327 | struct _arm_elf_section_data *exidx_arm_data; | |
8328 | bfd_byte *contents = NULL; | |
8329 | int deleted_exidx_bytes = 0; | |
8330 | bfd_vma j; | |
8331 | arm_unwind_table_edit *unwind_edit_head = NULL; | |
8332 | arm_unwind_table_edit *unwind_edit_tail = NULL; | |
8333 | Elf_Internal_Shdr *hdr; | |
8334 | bfd *ibfd; | |
8335 | ||
8336 | if (arm_data == NULL) | |
8337 | continue; | |
8338 | ||
8339 | exidx_sec = arm_data->u.text.arm_exidx_sec; | |
8340 | if (exidx_sec == NULL) | |
8341 | { | |
8342 | /* Section has no unwind data. */ | |
8343 | if (last_unwind_type == 0 || !last_exidx_sec) | |
8344 | continue; | |
8345 | ||
8346 | /* Ignore zero sized sections. */ | |
8347 | if (sec->size == 0) | |
8348 | continue; | |
8349 | ||
8350 | insert_cantunwind_after(last_text_sec, last_exidx_sec); | |
8351 | last_unwind_type = 0; | |
8352 | continue; | |
8353 | } | |
8354 | ||
22a8f80e PB |
8355 | /* Skip /DISCARD/ sections. */ |
8356 | if (bfd_is_abs_section (exidx_sec->output_section)) | |
8357 | continue; | |
8358 | ||
2468f9c9 PB |
8359 | hdr = &elf_section_data (exidx_sec)->this_hdr; |
8360 | if (hdr->sh_type != SHT_ARM_EXIDX) | |
8361 | continue; | |
8362 | ||
8363 | exidx_arm_data = get_arm_elf_section_data (exidx_sec); | |
8364 | if (exidx_arm_data == NULL) | |
8365 | continue; | |
8366 | ||
8367 | ibfd = exidx_sec->owner; | |
8368 | ||
8369 | if (hdr->contents != NULL) | |
8370 | contents = hdr->contents; | |
8371 | else if (! bfd_malloc_and_get_section (ibfd, exidx_sec, &contents)) | |
8372 | /* An error? */ | |
8373 | continue; | |
8374 | ||
8375 | for (j = 0; j < hdr->sh_size; j += 8) | |
8376 | { | |
8377 | unsigned int second_word = bfd_get_32 (ibfd, contents + j + 4); | |
8378 | int unwind_type; | |
8379 | int elide = 0; | |
8380 | ||
8381 | /* An EXIDX_CANTUNWIND entry. */ | |
8382 | if (second_word == 1) | |
8383 | { | |
8384 | if (last_unwind_type == 0) | |
8385 | elide = 1; | |
8386 | unwind_type = 0; | |
8387 | } | |
8388 | /* Inlined unwinding data. Merge if equal to previous. */ | |
8389 | else if ((second_word & 0x80000000) != 0) | |
8390 | { | |
8391 | if (last_second_word == second_word && last_unwind_type == 1) | |
8392 | elide = 1; | |
8393 | unwind_type = 1; | |
8394 | last_second_word = second_word; | |
8395 | } | |
8396 | /* Normal table entry. In theory we could merge these too, | |
8397 | but duplicate entries are likely to be much less common. */ | |
8398 | else | |
8399 | unwind_type = 2; | |
8400 | ||
8401 | if (elide) | |
8402 | { | |
8403 | add_unwind_table_edit (&unwind_edit_head, &unwind_edit_tail, | |
8404 | DELETE_EXIDX_ENTRY, NULL, j / 8); | |
8405 | ||
8406 | deleted_exidx_bytes += 8; | |
8407 | } | |
8408 | ||
8409 | last_unwind_type = unwind_type; | |
8410 | } | |
8411 | ||
8412 | /* Free contents if we allocated it ourselves. */ | |
8413 | if (contents != hdr->contents) | |
8414 | free (contents); | |
8415 | ||
8416 | /* Record edits to be applied later (in elf32_arm_write_section). */ | |
8417 | exidx_arm_data->u.exidx.unwind_edit_list = unwind_edit_head; | |
8418 | exidx_arm_data->u.exidx.unwind_edit_tail = unwind_edit_tail; | |
8419 | ||
8420 | if (deleted_exidx_bytes > 0) | |
8421 | adjust_exidx_size(exidx_sec, -deleted_exidx_bytes); | |
8422 | ||
8423 | last_exidx_sec = exidx_sec; | |
8424 | last_text_sec = sec; | |
8425 | } | |
8426 | ||
8427 | /* Add terminating CANTUNWIND entry. */ | |
8428 | if (last_exidx_sec && last_unwind_type != 0) | |
8429 | insert_cantunwind_after(last_text_sec, last_exidx_sec); | |
8430 | ||
8431 | return TRUE; | |
8432 | } | |
8433 | ||
3e6b1042 DJ |
8434 | static bfd_boolean |
8435 | elf32_arm_output_glue_section (struct bfd_link_info *info, bfd *obfd, | |
8436 | bfd *ibfd, const char *name) | |
8437 | { | |
8438 | asection *sec, *osec; | |
8439 | ||
8440 | sec = bfd_get_section_by_name (ibfd, name); | |
8441 | if (sec == NULL || (sec->flags & SEC_EXCLUDE) != 0) | |
8442 | return TRUE; | |
8443 | ||
8444 | osec = sec->output_section; | |
8445 | if (elf32_arm_write_section (obfd, info, sec, sec->contents)) | |
8446 | return TRUE; | |
8447 | ||
8448 | if (! bfd_set_section_contents (obfd, osec, sec->contents, | |
8449 | sec->output_offset, sec->size)) | |
8450 | return FALSE; | |
8451 | ||
8452 | return TRUE; | |
8453 | } | |
8454 | ||
8455 | static bfd_boolean | |
8456 | elf32_arm_final_link (bfd *abfd, struct bfd_link_info *info) | |
8457 | { | |
8458 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (info); | |
8459 | ||
8460 | /* Invoke the regular ELF backend linker to do all the work. */ | |
8461 | if (!bfd_elf_final_link (abfd, info)) | |
8462 | return FALSE; | |
8463 | ||
8464 | /* Write out any glue sections now that we have created all the | |
8465 | stubs. */ | |
8466 | if (globals->bfd_of_glue_owner != NULL) | |
8467 | { | |
8468 | if (! elf32_arm_output_glue_section (info, abfd, | |
8469 | globals->bfd_of_glue_owner, | |
8470 | ARM2THUMB_GLUE_SECTION_NAME)) | |
8471 | return FALSE; | |
8472 | ||
8473 | if (! elf32_arm_output_glue_section (info, abfd, | |
8474 | globals->bfd_of_glue_owner, | |
8475 | THUMB2ARM_GLUE_SECTION_NAME)) | |
8476 | return FALSE; | |
8477 | ||
8478 | if (! elf32_arm_output_glue_section (info, abfd, | |
8479 | globals->bfd_of_glue_owner, | |
8480 | VFP11_ERRATUM_VENEER_SECTION_NAME)) | |
8481 | return FALSE; | |
8482 | ||
8483 | if (! elf32_arm_output_glue_section (info, abfd, | |
8484 | globals->bfd_of_glue_owner, | |
8485 | ARM_BX_GLUE_SECTION_NAME)) | |
8486 | return FALSE; | |
8487 | } | |
8488 | ||
8489 | return TRUE; | |
8490 | } | |
8491 | ||
c178919b NC |
8492 | /* Set the right machine number. */ |
8493 | ||
8494 | static bfd_boolean | |
57e8b36a | 8495 | elf32_arm_object_p (bfd *abfd) |
c178919b | 8496 | { |
5a6c6817 | 8497 | unsigned int mach; |
57e8b36a | 8498 | |
5a6c6817 | 8499 | mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION); |
c178919b | 8500 | |
5a6c6817 NC |
8501 | if (mach != bfd_mach_arm_unknown) |
8502 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach); | |
8503 | ||
8504 | else if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT) | |
8505 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_ep9312); | |
e16bb312 | 8506 | |
e16bb312 | 8507 | else |
5a6c6817 | 8508 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach); |
c178919b NC |
8509 | |
8510 | return TRUE; | |
8511 | } | |
8512 | ||
fc830a83 | 8513 | /* Function to keep ARM specific flags in the ELF header. */ |
3c9458e9 | 8514 | |
b34976b6 | 8515 | static bfd_boolean |
57e8b36a | 8516 | elf32_arm_set_private_flags (bfd *abfd, flagword flags) |
252b5132 RH |
8517 | { |
8518 | if (elf_flags_init (abfd) | |
8519 | && elf_elfheader (abfd)->e_flags != flags) | |
8520 | { | |
fc830a83 NC |
8521 | if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN) |
8522 | { | |
fd2ec330 | 8523 | if (flags & EF_ARM_INTERWORK) |
d003868e AM |
8524 | (*_bfd_error_handler) |
8525 | (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"), | |
8526 | abfd); | |
fc830a83 | 8527 | else |
d003868e AM |
8528 | _bfd_error_handler |
8529 | (_("Warning: Clearing the interworking flag of %B due to outside request"), | |
8530 | abfd); | |
fc830a83 | 8531 | } |
252b5132 RH |
8532 | } |
8533 | else | |
8534 | { | |
8535 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 | 8536 | elf_flags_init (abfd) = TRUE; |
252b5132 RH |
8537 | } |
8538 | ||
b34976b6 | 8539 | return TRUE; |
252b5132 RH |
8540 | } |
8541 | ||
fc830a83 | 8542 | /* Copy backend specific data from one object module to another. */ |
9b485d32 | 8543 | |
b34976b6 | 8544 | static bfd_boolean |
57e8b36a | 8545 | elf32_arm_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
252b5132 RH |
8546 | { |
8547 | flagword in_flags; | |
8548 | flagword out_flags; | |
8549 | ||
0ffa91dd | 8550 | if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd)) |
b34976b6 | 8551 | return TRUE; |
252b5132 | 8552 | |
fc830a83 | 8553 | in_flags = elf_elfheader (ibfd)->e_flags; |
252b5132 RH |
8554 | out_flags = elf_elfheader (obfd)->e_flags; |
8555 | ||
fc830a83 NC |
8556 | if (elf_flags_init (obfd) |
8557 | && EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN | |
8558 | && in_flags != out_flags) | |
252b5132 | 8559 | { |
252b5132 | 8560 | /* Cannot mix APCS26 and APCS32 code. */ |
fd2ec330 | 8561 | if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26)) |
b34976b6 | 8562 | return FALSE; |
252b5132 RH |
8563 | |
8564 | /* Cannot mix float APCS and non-float APCS code. */ | |
fd2ec330 | 8565 | if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT)) |
b34976b6 | 8566 | return FALSE; |
252b5132 RH |
8567 | |
8568 | /* If the src and dest have different interworking flags | |
8569 | then turn off the interworking bit. */ | |
fd2ec330 | 8570 | if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK)) |
252b5132 | 8571 | { |
fd2ec330 | 8572 | if (out_flags & EF_ARM_INTERWORK) |
d003868e AM |
8573 | _bfd_error_handler |
8574 | (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"), | |
8575 | obfd, ibfd); | |
252b5132 | 8576 | |
fd2ec330 | 8577 | in_flags &= ~EF_ARM_INTERWORK; |
252b5132 | 8578 | } |
1006ba19 PB |
8579 | |
8580 | /* Likewise for PIC, though don't warn for this case. */ | |
fd2ec330 PB |
8581 | if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC)) |
8582 | in_flags &= ~EF_ARM_PIC; | |
252b5132 RH |
8583 | } |
8584 | ||
8585 | elf_elfheader (obfd)->e_flags = in_flags; | |
b34976b6 | 8586 | elf_flags_init (obfd) = TRUE; |
252b5132 | 8587 | |
94a3258f PB |
8588 | /* Also copy the EI_OSABI field. */ |
8589 | elf_elfheader (obfd)->e_ident[EI_OSABI] = | |
8590 | elf_elfheader (ibfd)->e_ident[EI_OSABI]; | |
8591 | ||
104d59d1 JM |
8592 | /* Copy object attributes. */ |
8593 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
ee065d83 PB |
8594 | |
8595 | return TRUE; | |
8596 | } | |
8597 | ||
8598 | /* Values for Tag_ABI_PCS_R9_use. */ | |
8599 | enum | |
8600 | { | |
8601 | AEABI_R9_V6, | |
8602 | AEABI_R9_SB, | |
8603 | AEABI_R9_TLS, | |
8604 | AEABI_R9_unused | |
8605 | }; | |
8606 | ||
8607 | /* Values for Tag_ABI_PCS_RW_data. */ | |
8608 | enum | |
8609 | { | |
8610 | AEABI_PCS_RW_data_absolute, | |
8611 | AEABI_PCS_RW_data_PCrel, | |
8612 | AEABI_PCS_RW_data_SBrel, | |
8613 | AEABI_PCS_RW_data_unused | |
8614 | }; | |
8615 | ||
8616 | /* Values for Tag_ABI_enum_size. */ | |
8617 | enum | |
8618 | { | |
8619 | AEABI_enum_unused, | |
8620 | AEABI_enum_short, | |
8621 | AEABI_enum_wide, | |
8622 | AEABI_enum_forced_wide | |
8623 | }; | |
8624 | ||
104d59d1 JM |
8625 | /* Determine whether an object attribute tag takes an integer, a |
8626 | string or both. */ | |
906e58ca | 8627 | |
104d59d1 JM |
8628 | static int |
8629 | elf32_arm_obj_attrs_arg_type (int tag) | |
8630 | { | |
8631 | if (tag == Tag_compatibility) | |
3483fe2e | 8632 | return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_STR_VAL; |
2d0bb761 | 8633 | else if (tag == Tag_nodefaults) |
3483fe2e AS |
8634 | return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_NO_DEFAULT; |
8635 | else if (tag == Tag_CPU_raw_name || tag == Tag_CPU_name) | |
8636 | return ATTR_TYPE_FLAG_STR_VAL; | |
104d59d1 | 8637 | else if (tag < 32) |
3483fe2e | 8638 | return ATTR_TYPE_FLAG_INT_VAL; |
104d59d1 | 8639 | else |
3483fe2e | 8640 | return (tag & 1) != 0 ? ATTR_TYPE_FLAG_STR_VAL : ATTR_TYPE_FLAG_INT_VAL; |
104d59d1 JM |
8641 | } |
8642 | ||
5aa6ff7c AS |
8643 | /* The ABI defines that Tag_conformance should be emitted first, and that |
8644 | Tag_nodefaults should be second (if either is defined). This sets those | |
8645 | two positions, and bumps up the position of all the remaining tags to | |
8646 | compensate. */ | |
8647 | static int | |
8648 | elf32_arm_obj_attrs_order (int num) | |
8649 | { | |
8650 | if (num == 4) | |
8651 | return Tag_conformance; | |
8652 | if (num == 5) | |
8653 | return Tag_nodefaults; | |
8654 | if ((num - 2) < Tag_nodefaults) | |
8655 | return num - 2; | |
8656 | if ((num - 1) < Tag_conformance) | |
8657 | return num - 1; | |
8658 | return num; | |
8659 | } | |
8660 | ||
91e22acd AS |
8661 | /* Read the architecture from the Tag_also_compatible_with attribute, if any. |
8662 | Returns -1 if no architecture could be read. */ | |
8663 | ||
8664 | static int | |
8665 | get_secondary_compatible_arch (bfd *abfd) | |
8666 | { | |
8667 | obj_attribute *attr = | |
8668 | &elf_known_obj_attributes_proc (abfd)[Tag_also_compatible_with]; | |
8669 | ||
8670 | /* Note: the tag and its argument below are uleb128 values, though | |
8671 | currently-defined values fit in one byte for each. */ | |
8672 | if (attr->s | |
8673 | && attr->s[0] == Tag_CPU_arch | |
8674 | && (attr->s[1] & 128) != 128 | |
8675 | && attr->s[2] == 0) | |
8676 | return attr->s[1]; | |
8677 | ||
8678 | /* This tag is "safely ignorable", so don't complain if it looks funny. */ | |
8679 | return -1; | |
8680 | } | |
8681 | ||
8682 | /* Set, or unset, the architecture of the Tag_also_compatible_with attribute. | |
8683 | The tag is removed if ARCH is -1. */ | |
8684 | ||
8e79c3df | 8685 | static void |
91e22acd | 8686 | set_secondary_compatible_arch (bfd *abfd, int arch) |
8e79c3df | 8687 | { |
91e22acd AS |
8688 | obj_attribute *attr = |
8689 | &elf_known_obj_attributes_proc (abfd)[Tag_also_compatible_with]; | |
8e79c3df | 8690 | |
91e22acd AS |
8691 | if (arch == -1) |
8692 | { | |
8693 | attr->s = NULL; | |
8694 | return; | |
8e79c3df | 8695 | } |
91e22acd AS |
8696 | |
8697 | /* Note: the tag and its argument below are uleb128 values, though | |
8698 | currently-defined values fit in one byte for each. */ | |
8699 | if (!attr->s) | |
8700 | attr->s = bfd_alloc (abfd, 3); | |
8701 | attr->s[0] = Tag_CPU_arch; | |
8702 | attr->s[1] = arch; | |
8703 | attr->s[2] = '\0'; | |
8e79c3df CM |
8704 | } |
8705 | ||
91e22acd AS |
8706 | /* Combine two values for Tag_CPU_arch, taking secondary compatibility tags |
8707 | into account. */ | |
8708 | ||
8709 | static int | |
8710 | tag_cpu_arch_combine (bfd *ibfd, int oldtag, int *secondary_compat_out, | |
8711 | int newtag, int secondary_compat) | |
8e79c3df | 8712 | { |
91e22acd AS |
8713 | #define T(X) TAG_CPU_ARCH_##X |
8714 | int tagl, tagh, result; | |
8715 | const int v6t2[] = | |
8716 | { | |
8717 | T(V6T2), /* PRE_V4. */ | |
8718 | T(V6T2), /* V4. */ | |
8719 | T(V6T2), /* V4T. */ | |
8720 | T(V6T2), /* V5T. */ | |
8721 | T(V6T2), /* V5TE. */ | |
8722 | T(V6T2), /* V5TEJ. */ | |
8723 | T(V6T2), /* V6. */ | |
8724 | T(V7), /* V6KZ. */ | |
8725 | T(V6T2) /* V6T2. */ | |
8726 | }; | |
8727 | const int v6k[] = | |
8728 | { | |
8729 | T(V6K), /* PRE_V4. */ | |
8730 | T(V6K), /* V4. */ | |
8731 | T(V6K), /* V4T. */ | |
8732 | T(V6K), /* V5T. */ | |
8733 | T(V6K), /* V5TE. */ | |
8734 | T(V6K), /* V5TEJ. */ | |
8735 | T(V6K), /* V6. */ | |
8736 | T(V6KZ), /* V6KZ. */ | |
8737 | T(V7), /* V6T2. */ | |
8738 | T(V6K) /* V6K. */ | |
8739 | }; | |
8740 | const int v7[] = | |
8741 | { | |
8742 | T(V7), /* PRE_V4. */ | |
8743 | T(V7), /* V4. */ | |
8744 | T(V7), /* V4T. */ | |
8745 | T(V7), /* V5T. */ | |
8746 | T(V7), /* V5TE. */ | |
8747 | T(V7), /* V5TEJ. */ | |
8748 | T(V7), /* V6. */ | |
8749 | T(V7), /* V6KZ. */ | |
8750 | T(V7), /* V6T2. */ | |
8751 | T(V7), /* V6K. */ | |
8752 | T(V7) /* V7. */ | |
8753 | }; | |
8754 | const int v6_m[] = | |
8755 | { | |
8756 | -1, /* PRE_V4. */ | |
8757 | -1, /* V4. */ | |
8758 | T(V6K), /* V4T. */ | |
8759 | T(V6K), /* V5T. */ | |
8760 | T(V6K), /* V5TE. */ | |
8761 | T(V6K), /* V5TEJ. */ | |
8762 | T(V6K), /* V6. */ | |
8763 | T(V6KZ), /* V6KZ. */ | |
8764 | T(V7), /* V6T2. */ | |
8765 | T(V6K), /* V6K. */ | |
8766 | T(V7), /* V7. */ | |
8767 | T(V6_M) /* V6_M. */ | |
8768 | }; | |
8769 | const int v6s_m[] = | |
8770 | { | |
8771 | -1, /* PRE_V4. */ | |
8772 | -1, /* V4. */ | |
8773 | T(V6K), /* V4T. */ | |
8774 | T(V6K), /* V5T. */ | |
8775 | T(V6K), /* V5TE. */ | |
8776 | T(V6K), /* V5TEJ. */ | |
8777 | T(V6K), /* V6. */ | |
8778 | T(V6KZ), /* V6KZ. */ | |
8779 | T(V7), /* V6T2. */ | |
8780 | T(V6K), /* V6K. */ | |
8781 | T(V7), /* V7. */ | |
8782 | T(V6S_M), /* V6_M. */ | |
8783 | T(V6S_M) /* V6S_M. */ | |
8784 | }; | |
8785 | const int v4t_plus_v6_m[] = | |
8786 | { | |
8787 | -1, /* PRE_V4. */ | |
8788 | -1, /* V4. */ | |
8789 | T(V4T), /* V4T. */ | |
8790 | T(V5T), /* V5T. */ | |
8791 | T(V5TE), /* V5TE. */ | |
8792 | T(V5TEJ), /* V5TEJ. */ | |
8793 | T(V6), /* V6. */ | |
8794 | T(V6KZ), /* V6KZ. */ | |
8795 | T(V6T2), /* V6T2. */ | |
8796 | T(V6K), /* V6K. */ | |
8797 | T(V7), /* V7. */ | |
8798 | T(V6_M), /* V6_M. */ | |
8799 | T(V6S_M), /* V6S_M. */ | |
8800 | T(V4T_PLUS_V6_M) /* V4T plus V6_M. */ | |
8801 | }; | |
8802 | const int *comb[] = | |
8803 | { | |
8804 | v6t2, | |
8805 | v6k, | |
8806 | v7, | |
8807 | v6_m, | |
8808 | v6s_m, | |
8809 | /* Pseudo-architecture. */ | |
8810 | v4t_plus_v6_m | |
8811 | }; | |
8812 | ||
8813 | /* Check we've not got a higher architecture than we know about. */ | |
8814 | ||
8815 | if (oldtag >= MAX_TAG_CPU_ARCH || newtag >= MAX_TAG_CPU_ARCH) | |
8816 | { | |
3895f852 | 8817 | _bfd_error_handler (_("error: %B: Unknown CPU architecture"), ibfd); |
91e22acd AS |
8818 | return -1; |
8819 | } | |
8820 | ||
8821 | /* Override old tag if we have a Tag_also_compatible_with on the output. */ | |
8822 | ||
8823 | if ((oldtag == T(V6_M) && *secondary_compat_out == T(V4T)) | |
8824 | || (oldtag == T(V4T) && *secondary_compat_out == T(V6_M))) | |
8825 | oldtag = T(V4T_PLUS_V6_M); | |
8826 | ||
8827 | /* And override the new tag if we have a Tag_also_compatible_with on the | |
8828 | input. */ | |
8829 | ||
8830 | if ((newtag == T(V6_M) && secondary_compat == T(V4T)) | |
8831 | || (newtag == T(V4T) && secondary_compat == T(V6_M))) | |
8832 | newtag = T(V4T_PLUS_V6_M); | |
8833 | ||
8834 | tagl = (oldtag < newtag) ? oldtag : newtag; | |
8835 | result = tagh = (oldtag > newtag) ? oldtag : newtag; | |
8836 | ||
8837 | /* Architectures before V6KZ add features monotonically. */ | |
8838 | if (tagh <= TAG_CPU_ARCH_V6KZ) | |
8839 | return result; | |
8840 | ||
8841 | result = comb[tagh - T(V6T2)][tagl]; | |
8842 | ||
8843 | /* Use Tag_CPU_arch == V4T and Tag_also_compatible_with (Tag_CPU_arch V6_M) | |
8844 | as the canonical version. */ | |
8845 | if (result == T(V4T_PLUS_V6_M)) | |
8846 | { | |
8847 | result = T(V4T); | |
8848 | *secondary_compat_out = T(V6_M); | |
8849 | } | |
8850 | else | |
8851 | *secondary_compat_out = -1; | |
8852 | ||
8853 | if (result == -1) | |
8854 | { | |
3895f852 | 8855 | _bfd_error_handler (_("error: %B: Conflicting CPU architectures %d/%d"), |
91e22acd AS |
8856 | ibfd, oldtag, newtag); |
8857 | return -1; | |
8858 | } | |
8859 | ||
8860 | return result; | |
8861 | #undef T | |
8e79c3df CM |
8862 | } |
8863 | ||
ee065d83 PB |
8864 | /* Merge EABI object attributes from IBFD into OBFD. Raise an error if there |
8865 | are conflicting attributes. */ | |
906e58ca | 8866 | |
ee065d83 PB |
8867 | static bfd_boolean |
8868 | elf32_arm_merge_eabi_attributes (bfd *ibfd, bfd *obfd) | |
8869 | { | |
104d59d1 JM |
8870 | obj_attribute *in_attr; |
8871 | obj_attribute *out_attr; | |
8872 | obj_attribute_list *in_list; | |
8e79c3df | 8873 | obj_attribute_list *out_list; |
91e22acd | 8874 | obj_attribute_list **out_listp; |
ee065d83 PB |
8875 | /* Some tags have 0 = don't care, 1 = strong requirement, |
8876 | 2 = weak requirement. */ | |
91e22acd | 8877 | static const int order_021[3] = {0, 2, 1}; |
b1cc4aeb PB |
8878 | /* For use with Tag_VFP_arch. */ |
8879 | static const int order_01243[5] = {0, 1, 2, 4, 3}; | |
ee065d83 | 8880 | int i; |
91e22acd | 8881 | bfd_boolean result = TRUE; |
ee065d83 | 8882 | |
3e6b1042 DJ |
8883 | /* Skip the linker stubs file. This preserves previous behavior |
8884 | of accepting unknown attributes in the first input file - but | |
8885 | is that a bug? */ | |
8886 | if (ibfd->flags & BFD_LINKER_CREATED) | |
8887 | return TRUE; | |
8888 | ||
104d59d1 | 8889 | if (!elf_known_obj_attributes_proc (obfd)[0].i) |
ee065d83 PB |
8890 | { |
8891 | /* This is the first object. Copy the attributes. */ | |
104d59d1 | 8892 | _bfd_elf_copy_obj_attributes (ibfd, obfd); |
004ae526 PB |
8893 | |
8894 | /* Use the Tag_null value to indicate the attributes have been | |
8895 | initialized. */ | |
104d59d1 | 8896 | elf_known_obj_attributes_proc (obfd)[0].i = 1; |
004ae526 | 8897 | |
ee065d83 PB |
8898 | return TRUE; |
8899 | } | |
8900 | ||
104d59d1 JM |
8901 | in_attr = elf_known_obj_attributes_proc (ibfd); |
8902 | out_attr = elf_known_obj_attributes_proc (obfd); | |
ee065d83 PB |
8903 | /* This needs to happen before Tag_ABI_FP_number_model is merged. */ |
8904 | if (in_attr[Tag_ABI_VFP_args].i != out_attr[Tag_ABI_VFP_args].i) | |
8905 | { | |
8e79c3df | 8906 | /* Ignore mismatches if the object doesn't use floating point. */ |
ee065d83 PB |
8907 | if (out_attr[Tag_ABI_FP_number_model].i == 0) |
8908 | out_attr[Tag_ABI_VFP_args].i = in_attr[Tag_ABI_VFP_args].i; | |
8909 | else if (in_attr[Tag_ABI_FP_number_model].i != 0) | |
8910 | { | |
8911 | _bfd_error_handler | |
3895f852 | 8912 | (_("error: %B uses VFP register arguments, %B does not"), |
ee065d83 | 8913 | ibfd, obfd); |
91e22acd | 8914 | result = FALSE; |
ee065d83 PB |
8915 | } |
8916 | } | |
8917 | ||
104d59d1 | 8918 | for (i = 4; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++) |
ee065d83 PB |
8919 | { |
8920 | /* Merge this attribute with existing attributes. */ | |
8921 | switch (i) | |
8922 | { | |
8923 | case Tag_CPU_raw_name: | |
8924 | case Tag_CPU_name: | |
91e22acd | 8925 | /* These are merged after Tag_CPU_arch. */ |
ee065d83 PB |
8926 | break; |
8927 | ||
8928 | case Tag_ABI_optimization_goals: | |
8929 | case Tag_ABI_FP_optimization_goals: | |
8930 | /* Use the first value seen. */ | |
8931 | break; | |
8932 | ||
8933 | case Tag_CPU_arch: | |
91e22acd AS |
8934 | { |
8935 | int secondary_compat = -1, secondary_compat_out = -1; | |
8936 | unsigned int saved_out_attr = out_attr[i].i; | |
8937 | static const char *name_table[] = { | |
8938 | /* These aren't real CPU names, but we can't guess | |
8939 | that from the architecture version alone. */ | |
8940 | "Pre v4", | |
8941 | "ARM v4", | |
8942 | "ARM v4T", | |
8943 | "ARM v5T", | |
8944 | "ARM v5TE", | |
8945 | "ARM v5TEJ", | |
8946 | "ARM v6", | |
8947 | "ARM v6KZ", | |
8948 | "ARM v6T2", | |
8949 | "ARM v6K", | |
8950 | "ARM v7", | |
8951 | "ARM v6-M", | |
8952 | "ARM v6S-M" | |
8953 | }; | |
8954 | ||
8955 | /* Merge Tag_CPU_arch and Tag_also_compatible_with. */ | |
8956 | secondary_compat = get_secondary_compatible_arch (ibfd); | |
8957 | secondary_compat_out = get_secondary_compatible_arch (obfd); | |
8958 | out_attr[i].i = tag_cpu_arch_combine (ibfd, out_attr[i].i, | |
8959 | &secondary_compat_out, | |
8960 | in_attr[i].i, | |
8961 | secondary_compat); | |
8962 | set_secondary_compatible_arch (obfd, secondary_compat_out); | |
8963 | ||
8964 | /* Merge Tag_CPU_name and Tag_CPU_raw_name. */ | |
8965 | if (out_attr[i].i == saved_out_attr) | |
8966 | ; /* Leave the names alone. */ | |
8967 | else if (out_attr[i].i == in_attr[i].i) | |
8968 | { | |
8969 | /* The output architecture has been changed to match the | |
8970 | input architecture. Use the input names. */ | |
8971 | out_attr[Tag_CPU_name].s = in_attr[Tag_CPU_name].s | |
8972 | ? _bfd_elf_attr_strdup (obfd, in_attr[Tag_CPU_name].s) | |
8973 | : NULL; | |
8974 | out_attr[Tag_CPU_raw_name].s = in_attr[Tag_CPU_raw_name].s | |
8975 | ? _bfd_elf_attr_strdup (obfd, in_attr[Tag_CPU_raw_name].s) | |
8976 | : NULL; | |
8977 | } | |
8978 | else | |
8979 | { | |
8980 | out_attr[Tag_CPU_name].s = NULL; | |
8981 | out_attr[Tag_CPU_raw_name].s = NULL; | |
8982 | } | |
8983 | ||
8984 | /* If we still don't have a value for Tag_CPU_name, | |
8985 | make one up now. Tag_CPU_raw_name remains blank. */ | |
8986 | if (out_attr[Tag_CPU_name].s == NULL | |
8987 | && out_attr[i].i < ARRAY_SIZE (name_table)) | |
8988 | out_attr[Tag_CPU_name].s = | |
8989 | _bfd_elf_attr_strdup (obfd, name_table[out_attr[i].i]); | |
8990 | } | |
8991 | break; | |
8992 | ||
ee065d83 PB |
8993 | case Tag_ARM_ISA_use: |
8994 | case Tag_THUMB_ISA_use: | |
ee065d83 | 8995 | case Tag_WMMX_arch: |
91e22acd AS |
8996 | case Tag_Advanced_SIMD_arch: |
8997 | /* ??? Do Advanced_SIMD (NEON) and WMMX conflict? */ | |
ee065d83 | 8998 | case Tag_ABI_FP_rounding: |
ee065d83 PB |
8999 | case Tag_ABI_FP_exceptions: |
9000 | case Tag_ABI_FP_user_exceptions: | |
9001 | case Tag_ABI_FP_number_model: | |
91e22acd AS |
9002 | case Tag_VFP_HP_extension: |
9003 | case Tag_CPU_unaligned_access: | |
9004 | case Tag_T2EE_use: | |
9005 | case Tag_Virtualization_use: | |
9006 | case Tag_MPextension_use: | |
ee065d83 PB |
9007 | /* Use the largest value specified. */ |
9008 | if (in_attr[i].i > out_attr[i].i) | |
9009 | out_attr[i].i = in_attr[i].i; | |
9010 | break; | |
9011 | ||
91e22acd AS |
9012 | case Tag_ABI_align8_preserved: |
9013 | case Tag_ABI_PCS_RO_data: | |
9014 | /* Use the smallest value specified. */ | |
9015 | if (in_attr[i].i < out_attr[i].i) | |
9016 | out_attr[i].i = in_attr[i].i; | |
9017 | break; | |
9018 | ||
9019 | case Tag_ABI_align8_needed: | |
9020 | if ((in_attr[i].i > 0 || out_attr[i].i > 0) | |
9021 | && (in_attr[Tag_ABI_align8_preserved].i == 0 | |
9022 | || out_attr[Tag_ABI_align8_preserved].i == 0)) | |
ee065d83 | 9023 | { |
91e22acd AS |
9024 | /* This error message should be enabled once all non-conformant |
9025 | binaries in the toolchain have had the attributes set | |
9026 | properly. | |
ee065d83 | 9027 | _bfd_error_handler |
3895f852 | 9028 | (_("error: %B: 8-byte data alignment conflicts with %B"), |
91e22acd AS |
9029 | obfd, ibfd); |
9030 | result = FALSE; */ | |
ee065d83 | 9031 | } |
91e22acd AS |
9032 | /* Fall through. */ |
9033 | case Tag_ABI_FP_denormal: | |
9034 | case Tag_ABI_PCS_GOT_use: | |
9035 | /* Use the "greatest" from the sequence 0, 2, 1, or the largest | |
9036 | value if greater than 2 (for future-proofing). */ | |
9037 | if ((in_attr[i].i > 2 && in_attr[i].i > out_attr[i].i) | |
9038 | || (in_attr[i].i <= 2 && out_attr[i].i <= 2 | |
9039 | && order_021[in_attr[i].i] > order_021[out_attr[i].i])) | |
ee065d83 PB |
9040 | out_attr[i].i = in_attr[i].i; |
9041 | break; | |
91e22acd AS |
9042 | |
9043 | ||
9044 | case Tag_CPU_arch_profile: | |
9045 | if (out_attr[i].i != in_attr[i].i) | |
9046 | { | |
9047 | /* 0 will merge with anything. | |
9048 | 'A' and 'S' merge to 'A'. | |
9049 | 'R' and 'S' merge to 'R'. | |
9050 | 'M' and 'A|R|S' is an error. */ | |
9051 | if (out_attr[i].i == 0 | |
9052 | || (out_attr[i].i == 'S' | |
9053 | && (in_attr[i].i == 'A' || in_attr[i].i == 'R'))) | |
9054 | out_attr[i].i = in_attr[i].i; | |
9055 | else if (in_attr[i].i == 0 | |
9056 | || (in_attr[i].i == 'S' | |
9057 | && (out_attr[i].i == 'A' || out_attr[i].i == 'R'))) | |
9058 | ; /* Do nothing. */ | |
9059 | else | |
9060 | { | |
9061 | _bfd_error_handler | |
3895f852 | 9062 | (_("error: %B: Conflicting architecture profiles %c/%c"), |
91e22acd AS |
9063 | ibfd, |
9064 | in_attr[i].i ? in_attr[i].i : '0', | |
9065 | out_attr[i].i ? out_attr[i].i : '0'); | |
9066 | result = FALSE; | |
9067 | } | |
9068 | } | |
9069 | break; | |
b1cc4aeb | 9070 | case Tag_VFP_arch: |
91e22acd AS |
9071 | /* Use the "greatest" from the sequence 0, 1, 2, 4, 3, or the |
9072 | largest value if greater than 4 (for future-proofing). */ | |
9073 | if ((in_attr[i].i > 4 && in_attr[i].i > out_attr[i].i) | |
9074 | || (in_attr[i].i <= 4 && out_attr[i].i <= 4 | |
9075 | && order_01243[in_attr[i].i] > order_01243[out_attr[i].i])) | |
b1cc4aeb PB |
9076 | out_attr[i].i = in_attr[i].i; |
9077 | break; | |
ee065d83 PB |
9078 | case Tag_PCS_config: |
9079 | if (out_attr[i].i == 0) | |
9080 | out_attr[i].i = in_attr[i].i; | |
9081 | else if (in_attr[i].i != 0 && out_attr[i].i != 0) | |
9082 | { | |
9083 | /* It's sometimes ok to mix different configs, so this is only | |
9084 | a warning. */ | |
9085 | _bfd_error_handler | |
9086 | (_("Warning: %B: Conflicting platform configuration"), ibfd); | |
9087 | } | |
9088 | break; | |
9089 | case Tag_ABI_PCS_R9_use: | |
004ae526 PB |
9090 | if (in_attr[i].i != out_attr[i].i |
9091 | && out_attr[i].i != AEABI_R9_unused | |
ee065d83 PB |
9092 | && in_attr[i].i != AEABI_R9_unused) |
9093 | { | |
9094 | _bfd_error_handler | |
3895f852 | 9095 | (_("error: %B: Conflicting use of R9"), ibfd); |
91e22acd | 9096 | result = FALSE; |
ee065d83 PB |
9097 | } |
9098 | if (out_attr[i].i == AEABI_R9_unused) | |
9099 | out_attr[i].i = in_attr[i].i; | |
9100 | break; | |
9101 | case Tag_ABI_PCS_RW_data: | |
9102 | if (in_attr[i].i == AEABI_PCS_RW_data_SBrel | |
9103 | && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_SB | |
9104 | && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_unused) | |
9105 | { | |
9106 | _bfd_error_handler | |
3895f852 | 9107 | (_("error: %B: SB relative addressing conflicts with use of R9"), |
ee065d83 | 9108 | ibfd); |
91e22acd | 9109 | result = FALSE; |
ee065d83 PB |
9110 | } |
9111 | /* Use the smallest value specified. */ | |
9112 | if (in_attr[i].i < out_attr[i].i) | |
9113 | out_attr[i].i = in_attr[i].i; | |
9114 | break; | |
ee065d83 | 9115 | case Tag_ABI_PCS_wchar_t: |
a9dc9481 JM |
9116 | if (out_attr[i].i && in_attr[i].i && out_attr[i].i != in_attr[i].i |
9117 | && !elf_arm_tdata (obfd)->no_wchar_size_warning) | |
ee065d83 PB |
9118 | { |
9119 | _bfd_error_handler | |
a9dc9481 JM |
9120 | (_("warning: %B uses %u-byte wchar_t yet the output is to use %u-byte wchar_t; use of wchar_t values across objects may fail"), |
9121 | ibfd, in_attr[i].i, out_attr[i].i); | |
ee065d83 | 9122 | } |
a9dc9481 | 9123 | else if (in_attr[i].i && !out_attr[i].i) |
ee065d83 PB |
9124 | out_attr[i].i = in_attr[i].i; |
9125 | break; | |
ee065d83 PB |
9126 | case Tag_ABI_enum_size: |
9127 | if (in_attr[i].i != AEABI_enum_unused) | |
9128 | { | |
9129 | if (out_attr[i].i == AEABI_enum_unused | |
9130 | || out_attr[i].i == AEABI_enum_forced_wide) | |
9131 | { | |
9132 | /* The existing object is compatible with anything. | |
9133 | Use whatever requirements the new object has. */ | |
9134 | out_attr[i].i = in_attr[i].i; | |
9135 | } | |
9136 | else if (in_attr[i].i != AEABI_enum_forced_wide | |
bf21ed78 | 9137 | && out_attr[i].i != in_attr[i].i |
0ffa91dd | 9138 | && !elf_arm_tdata (obfd)->no_enum_size_warning) |
ee065d83 | 9139 | { |
91e22acd | 9140 | static const char *aeabi_enum_names[] = |
bf21ed78 | 9141 | { "", "variable-size", "32-bit", "" }; |
91e22acd AS |
9142 | const char *in_name = |
9143 | in_attr[i].i < ARRAY_SIZE(aeabi_enum_names) | |
9144 | ? aeabi_enum_names[in_attr[i].i] | |
9145 | : "<unknown>"; | |
9146 | const char *out_name = | |
9147 | out_attr[i].i < ARRAY_SIZE(aeabi_enum_names) | |
9148 | ? aeabi_enum_names[out_attr[i].i] | |
9149 | : "<unknown>"; | |
ee065d83 | 9150 | _bfd_error_handler |
bf21ed78 | 9151 | (_("warning: %B uses %s enums yet the output is to use %s enums; use of enum values across objects may fail"), |
91e22acd | 9152 | ibfd, in_name, out_name); |
ee065d83 PB |
9153 | } |
9154 | } | |
9155 | break; | |
9156 | case Tag_ABI_VFP_args: | |
9157 | /* Aready done. */ | |
9158 | break; | |
9159 | case Tag_ABI_WMMX_args: | |
9160 | if (in_attr[i].i != out_attr[i].i) | |
9161 | { | |
9162 | _bfd_error_handler | |
3895f852 | 9163 | (_("error: %B uses iWMMXt register arguments, %B does not"), |
ee065d83 | 9164 | ibfd, obfd); |
91e22acd | 9165 | result = FALSE; |
ee065d83 PB |
9166 | } |
9167 | break; | |
7b86a9fa AS |
9168 | case Tag_compatibility: |
9169 | /* Merged in target-independent code. */ | |
9170 | break; | |
91e22acd AS |
9171 | case Tag_ABI_HardFP_use: |
9172 | /* 1 (SP) and 2 (DP) conflict, so combine to 3 (SP & DP). */ | |
9173 | if ((in_attr[i].i == 1 && out_attr[i].i == 2) | |
9174 | || (in_attr[i].i == 2 && out_attr[i].i == 1)) | |
9175 | out_attr[i].i = 3; | |
9176 | else if (in_attr[i].i > out_attr[i].i) | |
9177 | out_attr[i].i = in_attr[i].i; | |
9178 | break; | |
9179 | case Tag_ABI_FP_16bit_format: | |
9180 | if (in_attr[i].i != 0 && out_attr[i].i != 0) | |
9181 | { | |
9182 | if (in_attr[i].i != out_attr[i].i) | |
9183 | { | |
9184 | _bfd_error_handler | |
3895f852 | 9185 | (_("error: fp16 format mismatch between %B and %B"), |
91e22acd AS |
9186 | ibfd, obfd); |
9187 | result = FALSE; | |
9188 | } | |
9189 | } | |
9190 | if (in_attr[i].i != 0) | |
9191 | out_attr[i].i = in_attr[i].i; | |
9192 | break; | |
7b86a9fa | 9193 | |
91e22acd | 9194 | case Tag_nodefaults: |
2d0bb761 AS |
9195 | /* This tag is set if it exists, but the value is unused (and is |
9196 | typically zero). We don't actually need to do anything here - | |
9197 | the merge happens automatically when the type flags are merged | |
9198 | below. */ | |
91e22acd AS |
9199 | break; |
9200 | case Tag_also_compatible_with: | |
9201 | /* Already done in Tag_CPU_arch. */ | |
9202 | break; | |
9203 | case Tag_conformance: | |
9204 | /* Keep the attribute if it matches. Throw it away otherwise. | |
9205 | No attribute means no claim to conform. */ | |
9206 | if (!in_attr[i].s || !out_attr[i].s | |
9207 | || strcmp (in_attr[i].s, out_attr[i].s) != 0) | |
9208 | out_attr[i].s = NULL; | |
9209 | break; | |
3cfad14c | 9210 | |
91e22acd | 9211 | default: |
3cfad14c | 9212 | { |
91e22acd AS |
9213 | bfd *err_bfd = NULL; |
9214 | ||
9215 | /* The "known_obj_attributes" table does contain some undefined | |
9216 | attributes. Ensure that there are unused. */ | |
9217 | if (out_attr[i].i != 0 || out_attr[i].s != NULL) | |
9218 | err_bfd = obfd; | |
9219 | else if (in_attr[i].i != 0 || in_attr[i].s != NULL) | |
9220 | err_bfd = ibfd; | |
9221 | ||
9222 | if (err_bfd != NULL) | |
9223 | { | |
9224 | /* Attribute numbers >=64 (mod 128) can be safely ignored. */ | |
9225 | if ((i & 127) < 64) | |
9226 | { | |
9227 | _bfd_error_handler | |
9228 | (_("%B: Unknown mandatory EABI object attribute %d"), | |
9229 | err_bfd, i); | |
9230 | bfd_set_error (bfd_error_bad_value); | |
9231 | result = FALSE; | |
9232 | } | |
9233 | else | |
9234 | { | |
9235 | _bfd_error_handler | |
9236 | (_("Warning: %B: Unknown EABI object attribute %d"), | |
9237 | err_bfd, i); | |
9238 | } | |
9239 | } | |
9240 | ||
9241 | /* Only pass on attributes that match in both inputs. */ | |
9242 | if (in_attr[i].i != out_attr[i].i | |
9243 | || in_attr[i].s != out_attr[i].s | |
9244 | || (in_attr[i].s != NULL && out_attr[i].s != NULL | |
9245 | && strcmp (in_attr[i].s, out_attr[i].s) != 0)) | |
9246 | { | |
9247 | out_attr[i].i = 0; | |
9248 | out_attr[i].s = NULL; | |
9249 | } | |
3cfad14c | 9250 | } |
91e22acd AS |
9251 | } |
9252 | ||
9253 | /* If out_attr was copied from in_attr then it won't have a type yet. */ | |
9254 | if (in_attr[i].type && !out_attr[i].type) | |
9255 | out_attr[i].type = in_attr[i].type; | |
ee065d83 PB |
9256 | } |
9257 | ||
104d59d1 JM |
9258 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
9259 | _bfd_elf_merge_object_attributes (ibfd, obfd); | |
ee065d83 | 9260 | |
104d59d1 JM |
9261 | /* Check for any attributes not known on ARM. */ |
9262 | in_list = elf_other_obj_attributes_proc (ibfd); | |
91e22acd AS |
9263 | out_listp = &elf_other_obj_attributes_proc (obfd); |
9264 | out_list = *out_listp; | |
8e79c3df | 9265 | |
91e22acd | 9266 | for (; in_list || out_list; ) |
ee065d83 | 9267 | { |
91e22acd AS |
9268 | bfd *err_bfd = NULL; |
9269 | int err_tag = 0; | |
8e79c3df CM |
9270 | |
9271 | /* The tags for each list are in numerical order. */ | |
9272 | /* If the tags are equal, then merge. */ | |
91e22acd | 9273 | if (out_list && (!in_list || in_list->tag > out_list->tag)) |
8e79c3df | 9274 | { |
91e22acd AS |
9275 | /* This attribute only exists in obfd. We can't merge, and we don't |
9276 | know what the tag means, so delete it. */ | |
9277 | err_bfd = obfd; | |
9278 | err_tag = out_list->tag; | |
9279 | *out_listp = out_list->next; | |
9280 | out_list = *out_listp; | |
8e79c3df | 9281 | } |
91e22acd | 9282 | else if (in_list && (!out_list || in_list->tag < out_list->tag)) |
8e79c3df | 9283 | { |
91e22acd AS |
9284 | /* This attribute only exists in ibfd. We can't merge, and we don't |
9285 | know what the tag means, so ignore it. */ | |
9286 | err_bfd = ibfd; | |
9287 | err_tag = in_list->tag; | |
8e79c3df | 9288 | in_list = in_list->next; |
eb111b1f | 9289 | } |
91e22acd AS |
9290 | else /* The tags are equal. */ |
9291 | { | |
9292 | /* As present, all attributes in the list are unknown, and | |
9293 | therefore can't be merged meaningfully. */ | |
9294 | err_bfd = obfd; | |
9295 | err_tag = out_list->tag; | |
9296 | ||
9297 | /* Only pass on attributes that match in both inputs. */ | |
9298 | if (in_list->attr.i != out_list->attr.i | |
9299 | || in_list->attr.s != out_list->attr.s | |
9300 | || (in_list->attr.s && out_list->attr.s | |
9301 | && strcmp (in_list->attr.s, out_list->attr.s) != 0)) | |
9302 | { | |
9303 | /* No match. Delete the attribute. */ | |
9304 | *out_listp = out_list->next; | |
9305 | out_list = *out_listp; | |
9306 | } | |
9307 | else | |
9308 | { | |
9309 | /* Matched. Keep the attribute and move to the next. */ | |
9310 | out_list = out_list->next; | |
9311 | in_list = in_list->next; | |
9312 | } | |
9313 | } | |
9314 | ||
9315 | if (err_bfd) | |
9316 | { | |
9317 | /* Attribute numbers >=64 (mod 128) can be safely ignored. */ | |
9318 | if ((err_tag & 127) < 64) | |
9319 | { | |
9320 | _bfd_error_handler | |
9321 | (_("%B: Unknown mandatory EABI object attribute %d"), | |
9322 | err_bfd, err_tag); | |
9323 | bfd_set_error (bfd_error_bad_value); | |
9324 | result = FALSE; | |
9325 | } | |
9326 | else | |
9327 | { | |
9328 | _bfd_error_handler | |
9329 | (_("Warning: %B: Unknown EABI object attribute %d"), | |
9330 | err_bfd, err_tag); | |
9331 | } | |
9332 | } | |
ee065d83 | 9333 | } |
91e22acd | 9334 | return result; |
252b5132 RH |
9335 | } |
9336 | ||
3a4a14e9 PB |
9337 | |
9338 | /* Return TRUE if the two EABI versions are incompatible. */ | |
9339 | ||
9340 | static bfd_boolean | |
9341 | elf32_arm_versions_compatible (unsigned iver, unsigned over) | |
9342 | { | |
9343 | /* v4 and v5 are the same spec before and after it was released, | |
9344 | so allow mixing them. */ | |
9345 | if ((iver == EF_ARM_EABI_VER4 && over == EF_ARM_EABI_VER5) | |
9346 | || (iver == EF_ARM_EABI_VER5 && over == EF_ARM_EABI_VER4)) | |
9347 | return TRUE; | |
9348 | ||
9349 | return (iver == over); | |
9350 | } | |
9351 | ||
252b5132 RH |
9352 | /* Merge backend specific data from an object file to the output |
9353 | object file when linking. */ | |
9b485d32 | 9354 | |
b34976b6 | 9355 | static bfd_boolean |
57e8b36a | 9356 | elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd) |
252b5132 RH |
9357 | { |
9358 | flagword out_flags; | |
9359 | flagword in_flags; | |
b34976b6 | 9360 | bfd_boolean flags_compatible = TRUE; |
cf919dfd | 9361 | asection *sec; |
252b5132 | 9362 | |
9b485d32 | 9363 | /* Check if we have the same endianess. */ |
82e51918 | 9364 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) |
b34976b6 | 9365 | return FALSE; |
1fe494a5 | 9366 | |
0ffa91dd | 9367 | if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd)) |
b34976b6 | 9368 | return TRUE; |
252b5132 | 9369 | |
ee065d83 PB |
9370 | if (!elf32_arm_merge_eabi_attributes (ibfd, obfd)) |
9371 | return FALSE; | |
9372 | ||
252b5132 RH |
9373 | /* The input BFD must have had its flags initialised. */ |
9374 | /* The following seems bogus to me -- The flags are initialized in | |
9375 | the assembler but I don't think an elf_flags_init field is | |
9b485d32 | 9376 | written into the object. */ |
252b5132 RH |
9377 | /* BFD_ASSERT (elf_flags_init (ibfd)); */ |
9378 | ||
9379 | in_flags = elf_elfheader (ibfd)->e_flags; | |
9380 | out_flags = elf_elfheader (obfd)->e_flags; | |
9381 | ||
23684067 PB |
9382 | /* In theory there is no reason why we couldn't handle this. However |
9383 | in practice it isn't even close to working and there is no real | |
9384 | reason to want it. */ | |
9385 | if (EF_ARM_EABI_VERSION (in_flags) >= EF_ARM_EABI_VER4 | |
c13bb2ea | 9386 | && !(ibfd->flags & DYNAMIC) |
23684067 PB |
9387 | && (in_flags & EF_ARM_BE8)) |
9388 | { | |
3895f852 | 9389 | _bfd_error_handler (_("error: %B is already in final BE8 format"), |
23684067 PB |
9390 | ibfd); |
9391 | return FALSE; | |
9392 | } | |
9393 | ||
252b5132 RH |
9394 | if (!elf_flags_init (obfd)) |
9395 | { | |
fe077fa6 NC |
9396 | /* If the input is the default architecture and had the default |
9397 | flags then do not bother setting the flags for the output | |
9398 | architecture, instead allow future merges to do this. If no | |
9399 | future merges ever set these flags then they will retain their | |
9400 | uninitialised values, which surprise surprise, correspond | |
252b5132 | 9401 | to the default values. */ |
fe077fa6 NC |
9402 | if (bfd_get_arch_info (ibfd)->the_default |
9403 | && elf_elfheader (ibfd)->e_flags == 0) | |
b34976b6 | 9404 | return TRUE; |
252b5132 | 9405 | |
b34976b6 | 9406 | elf_flags_init (obfd) = TRUE; |
252b5132 RH |
9407 | elf_elfheader (obfd)->e_flags = in_flags; |
9408 | ||
9409 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
9410 | && bfd_get_arch_info (obfd)->the_default) | |
9411 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); | |
9412 | ||
b34976b6 | 9413 | return TRUE; |
252b5132 RH |
9414 | } |
9415 | ||
5a6c6817 NC |
9416 | /* Determine what should happen if the input ARM architecture |
9417 | does not match the output ARM architecture. */ | |
9418 | if (! bfd_arm_merge_machines (ibfd, obfd)) | |
9419 | return FALSE; | |
e16bb312 | 9420 | |
1006ba19 | 9421 | /* Identical flags must be compatible. */ |
252b5132 | 9422 | if (in_flags == out_flags) |
b34976b6 | 9423 | return TRUE; |
252b5132 | 9424 | |
35a0f415 DJ |
9425 | /* Check to see if the input BFD actually contains any sections. If |
9426 | not, its flags may not have been initialised either, but it | |
8e3de13a | 9427 | cannot actually cause any incompatiblity. Do not short-circuit |
35a0f415 | 9428 | dynamic objects; their section list may be emptied by |
d1f161ea | 9429 | elf_link_add_object_symbols. |
35a0f415 | 9430 | |
d1f161ea NC |
9431 | Also check to see if there are no code sections in the input. |
9432 | In this case there is no need to check for code specific flags. | |
9433 | XXX - do we need to worry about floating-point format compatability | |
9434 | in data sections ? */ | |
35a0f415 | 9435 | if (!(ibfd->flags & DYNAMIC)) |
cf919dfd | 9436 | { |
35a0f415 | 9437 | bfd_boolean null_input_bfd = TRUE; |
d1f161ea | 9438 | bfd_boolean only_data_sections = TRUE; |
35a0f415 DJ |
9439 | |
9440 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
cf919dfd | 9441 | { |
35a0f415 DJ |
9442 | /* Ignore synthetic glue sections. */ |
9443 | if (strcmp (sec->name, ".glue_7") | |
9444 | && strcmp (sec->name, ".glue_7t")) | |
9445 | { | |
d1f161ea NC |
9446 | if ((bfd_get_section_flags (ibfd, sec) |
9447 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
9448 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
9449 | only_data_sections = FALSE; | |
9450 | ||
35a0f415 DJ |
9451 | null_input_bfd = FALSE; |
9452 | break; | |
9453 | } | |
cf919dfd | 9454 | } |
d1f161ea NC |
9455 | |
9456 | if (null_input_bfd || only_data_sections) | |
35a0f415 | 9457 | return TRUE; |
cf919dfd | 9458 | } |
cf919dfd | 9459 | |
252b5132 | 9460 | /* Complain about various flag mismatches. */ |
3a4a14e9 PB |
9461 | if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags), |
9462 | EF_ARM_EABI_VERSION (out_flags))) | |
fc830a83 | 9463 | { |
d003868e | 9464 | _bfd_error_handler |
3895f852 | 9465 | (_("error: Source object %B has EABI version %d, but target %B has EABI version %d"), |
d003868e AM |
9466 | ibfd, obfd, |
9467 | (in_flags & EF_ARM_EABIMASK) >> 24, | |
9468 | (out_flags & EF_ARM_EABIMASK) >> 24); | |
b34976b6 | 9469 | return FALSE; |
fc830a83 | 9470 | } |
252b5132 | 9471 | |
1006ba19 | 9472 | /* Not sure what needs to be checked for EABI versions >= 1. */ |
00a97672 RS |
9473 | /* VxWorks libraries do not use these flags. */ |
9474 | if (get_elf_backend_data (obfd) != &elf32_arm_vxworks_bed | |
9475 | && get_elf_backend_data (ibfd) != &elf32_arm_vxworks_bed | |
9476 | && EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN) | |
1006ba19 | 9477 | { |
fd2ec330 | 9478 | if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26)) |
1006ba19 | 9479 | { |
d003868e | 9480 | _bfd_error_handler |
3895f852 | 9481 | (_("error: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"), |
d003868e AM |
9482 | ibfd, obfd, |
9483 | in_flags & EF_ARM_APCS_26 ? 26 : 32, | |
9484 | out_flags & EF_ARM_APCS_26 ? 26 : 32); | |
b34976b6 | 9485 | flags_compatible = FALSE; |
1006ba19 | 9486 | } |
252b5132 | 9487 | |
fd2ec330 | 9488 | if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT)) |
1006ba19 | 9489 | { |
5eefb65f | 9490 | if (in_flags & EF_ARM_APCS_FLOAT) |
d003868e | 9491 | _bfd_error_handler |
3895f852 | 9492 | (_("error: %B passes floats in float registers, whereas %B passes them in integer registers"), |
d003868e | 9493 | ibfd, obfd); |
5eefb65f | 9494 | else |
d003868e | 9495 | _bfd_error_handler |
3895f852 | 9496 | (_("error: %B passes floats in integer registers, whereas %B passes them in float registers"), |
d003868e | 9497 | ibfd, obfd); |
63b0f745 | 9498 | |
b34976b6 | 9499 | flags_compatible = FALSE; |
1006ba19 | 9500 | } |
252b5132 | 9501 | |
96a846ea | 9502 | if ((in_flags & EF_ARM_VFP_FLOAT) != (out_flags & EF_ARM_VFP_FLOAT)) |
1006ba19 | 9503 | { |
96a846ea | 9504 | if (in_flags & EF_ARM_VFP_FLOAT) |
d003868e | 9505 | _bfd_error_handler |
3895f852 | 9506 | (_("error: %B uses VFP instructions, whereas %B does not"), |
d003868e | 9507 | ibfd, obfd); |
5eefb65f | 9508 | else |
d003868e | 9509 | _bfd_error_handler |
3895f852 | 9510 | (_("error: %B uses FPA instructions, whereas %B does not"), |
d003868e | 9511 | ibfd, obfd); |
fde78edd NC |
9512 | |
9513 | flags_compatible = FALSE; | |
9514 | } | |
9515 | ||
9516 | if ((in_flags & EF_ARM_MAVERICK_FLOAT) != (out_flags & EF_ARM_MAVERICK_FLOAT)) | |
9517 | { | |
9518 | if (in_flags & EF_ARM_MAVERICK_FLOAT) | |
d003868e | 9519 | _bfd_error_handler |
3895f852 | 9520 | (_("error: %B uses Maverick instructions, whereas %B does not"), |
d003868e | 9521 | ibfd, obfd); |
fde78edd | 9522 | else |
d003868e | 9523 | _bfd_error_handler |
3895f852 | 9524 | (_("error: %B does not use Maverick instructions, whereas %B does"), |
d003868e | 9525 | ibfd, obfd); |
63b0f745 | 9526 | |
b34976b6 | 9527 | flags_compatible = FALSE; |
1006ba19 | 9528 | } |
96a846ea RE |
9529 | |
9530 | #ifdef EF_ARM_SOFT_FLOAT | |
9531 | if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT)) | |
9532 | { | |
9533 | /* We can allow interworking between code that is VFP format | |
9534 | layout, and uses either soft float or integer regs for | |
9535 | passing floating point arguments and results. We already | |
9536 | know that the APCS_FLOAT flags match; similarly for VFP | |
9537 | flags. */ | |
9538 | if ((in_flags & EF_ARM_APCS_FLOAT) != 0 | |
9539 | || (in_flags & EF_ARM_VFP_FLOAT) == 0) | |
9540 | { | |
9541 | if (in_flags & EF_ARM_SOFT_FLOAT) | |
d003868e | 9542 | _bfd_error_handler |
3895f852 | 9543 | (_("error: %B uses software FP, whereas %B uses hardware FP"), |
d003868e | 9544 | ibfd, obfd); |
96a846ea | 9545 | else |
d003868e | 9546 | _bfd_error_handler |
3895f852 | 9547 | (_("error: %B uses hardware FP, whereas %B uses software FP"), |
d003868e | 9548 | ibfd, obfd); |
96a846ea | 9549 | |
b34976b6 | 9550 | flags_compatible = FALSE; |
96a846ea RE |
9551 | } |
9552 | } | |
ee43f35e | 9553 | #endif |
252b5132 | 9554 | |
1006ba19 | 9555 | /* Interworking mismatch is only a warning. */ |
fd2ec330 | 9556 | if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK)) |
8f615d07 | 9557 | { |
e3c8793a NC |
9558 | if (in_flags & EF_ARM_INTERWORK) |
9559 | { | |
d003868e AM |
9560 | _bfd_error_handler |
9561 | (_("Warning: %B supports interworking, whereas %B does not"), | |
9562 | ibfd, obfd); | |
e3c8793a NC |
9563 | } |
9564 | else | |
9565 | { | |
d003868e AM |
9566 | _bfd_error_handler |
9567 | (_("Warning: %B does not support interworking, whereas %B does"), | |
9568 | ibfd, obfd); | |
e3c8793a | 9569 | } |
8f615d07 | 9570 | } |
252b5132 | 9571 | } |
63b0f745 | 9572 | |
1006ba19 | 9573 | return flags_compatible; |
252b5132 RH |
9574 | } |
9575 | ||
9b485d32 NC |
9576 | /* Display the flags field. */ |
9577 | ||
b34976b6 | 9578 | static bfd_boolean |
57e8b36a | 9579 | elf32_arm_print_private_bfd_data (bfd *abfd, void * ptr) |
252b5132 | 9580 | { |
fc830a83 NC |
9581 | FILE * file = (FILE *) ptr; |
9582 | unsigned long flags; | |
252b5132 RH |
9583 | |
9584 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
9585 | ||
9586 | /* Print normal ELF private data. */ | |
9587 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
9588 | ||
fc830a83 | 9589 | flags = elf_elfheader (abfd)->e_flags; |
9b485d32 NC |
9590 | /* Ignore init flag - it may not be set, despite the flags field |
9591 | containing valid data. */ | |
252b5132 RH |
9592 | |
9593 | /* xgettext:c-format */ | |
9b485d32 | 9594 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); |
252b5132 | 9595 | |
fc830a83 NC |
9596 | switch (EF_ARM_EABI_VERSION (flags)) |
9597 | { | |
9598 | case EF_ARM_EABI_UNKNOWN: | |
4cc11e76 | 9599 | /* The following flag bits are GNU extensions and not part of the |
fc830a83 NC |
9600 | official ARM ELF extended ABI. Hence they are only decoded if |
9601 | the EABI version is not set. */ | |
fd2ec330 | 9602 | if (flags & EF_ARM_INTERWORK) |
9b485d32 | 9603 | fprintf (file, _(" [interworking enabled]")); |
9a5aca8c | 9604 | |
fd2ec330 | 9605 | if (flags & EF_ARM_APCS_26) |
6c571f00 | 9606 | fprintf (file, " [APCS-26]"); |
fc830a83 | 9607 | else |
6c571f00 | 9608 | fprintf (file, " [APCS-32]"); |
9a5aca8c | 9609 | |
96a846ea RE |
9610 | if (flags & EF_ARM_VFP_FLOAT) |
9611 | fprintf (file, _(" [VFP float format]")); | |
fde78edd NC |
9612 | else if (flags & EF_ARM_MAVERICK_FLOAT) |
9613 | fprintf (file, _(" [Maverick float format]")); | |
96a846ea RE |
9614 | else |
9615 | fprintf (file, _(" [FPA float format]")); | |
9616 | ||
fd2ec330 | 9617 | if (flags & EF_ARM_APCS_FLOAT) |
9b485d32 | 9618 | fprintf (file, _(" [floats passed in float registers]")); |
9a5aca8c | 9619 | |
fd2ec330 | 9620 | if (flags & EF_ARM_PIC) |
9b485d32 | 9621 | fprintf (file, _(" [position independent]")); |
fc830a83 | 9622 | |
fd2ec330 | 9623 | if (flags & EF_ARM_NEW_ABI) |
9b485d32 | 9624 | fprintf (file, _(" [new ABI]")); |
9a5aca8c | 9625 | |
fd2ec330 | 9626 | if (flags & EF_ARM_OLD_ABI) |
9b485d32 | 9627 | fprintf (file, _(" [old ABI]")); |
9a5aca8c | 9628 | |
fd2ec330 | 9629 | if (flags & EF_ARM_SOFT_FLOAT) |
9b485d32 | 9630 | fprintf (file, _(" [software FP]")); |
9a5aca8c | 9631 | |
96a846ea RE |
9632 | flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT |
9633 | | EF_ARM_PIC | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI | |
fde78edd NC |
9634 | | EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT |
9635 | | EF_ARM_MAVERICK_FLOAT); | |
fc830a83 | 9636 | break; |
9a5aca8c | 9637 | |
fc830a83 | 9638 | case EF_ARM_EABI_VER1: |
9b485d32 | 9639 | fprintf (file, _(" [Version1 EABI]")); |
9a5aca8c | 9640 | |
fc830a83 | 9641 | if (flags & EF_ARM_SYMSARESORTED) |
9b485d32 | 9642 | fprintf (file, _(" [sorted symbol table]")); |
fc830a83 | 9643 | else |
9b485d32 | 9644 | fprintf (file, _(" [unsorted symbol table]")); |
9a5aca8c | 9645 | |
fc830a83 NC |
9646 | flags &= ~ EF_ARM_SYMSARESORTED; |
9647 | break; | |
9a5aca8c | 9648 | |
fd2ec330 PB |
9649 | case EF_ARM_EABI_VER2: |
9650 | fprintf (file, _(" [Version2 EABI]")); | |
9651 | ||
9652 | if (flags & EF_ARM_SYMSARESORTED) | |
9653 | fprintf (file, _(" [sorted symbol table]")); | |
9654 | else | |
9655 | fprintf (file, _(" [unsorted symbol table]")); | |
9656 | ||
9657 | if (flags & EF_ARM_DYNSYMSUSESEGIDX) | |
9658 | fprintf (file, _(" [dynamic symbols use segment index]")); | |
9659 | ||
9660 | if (flags & EF_ARM_MAPSYMSFIRST) | |
9661 | fprintf (file, _(" [mapping symbols precede others]")); | |
9662 | ||
99e4ae17 | 9663 | flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX |
fd2ec330 PB |
9664 | | EF_ARM_MAPSYMSFIRST); |
9665 | break; | |
9666 | ||
d507cf36 PB |
9667 | case EF_ARM_EABI_VER3: |
9668 | fprintf (file, _(" [Version3 EABI]")); | |
8cb51566 PB |
9669 | break; |
9670 | ||
9671 | case EF_ARM_EABI_VER4: | |
9672 | fprintf (file, _(" [Version4 EABI]")); | |
3a4a14e9 | 9673 | goto eabi; |
d507cf36 | 9674 | |
3a4a14e9 PB |
9675 | case EF_ARM_EABI_VER5: |
9676 | fprintf (file, _(" [Version5 EABI]")); | |
9677 | eabi: | |
d507cf36 PB |
9678 | if (flags & EF_ARM_BE8) |
9679 | fprintf (file, _(" [BE8]")); | |
9680 | ||
9681 | if (flags & EF_ARM_LE8) | |
9682 | fprintf (file, _(" [LE8]")); | |
9683 | ||
9684 | flags &= ~(EF_ARM_LE8 | EF_ARM_BE8); | |
9685 | break; | |
9686 | ||
fc830a83 | 9687 | default: |
9b485d32 | 9688 | fprintf (file, _(" <EABI version unrecognised>")); |
fc830a83 NC |
9689 | break; |
9690 | } | |
252b5132 | 9691 | |
fc830a83 | 9692 | flags &= ~ EF_ARM_EABIMASK; |
252b5132 | 9693 | |
fc830a83 | 9694 | if (flags & EF_ARM_RELEXEC) |
9b485d32 | 9695 | fprintf (file, _(" [relocatable executable]")); |
252b5132 | 9696 | |
fc830a83 | 9697 | if (flags & EF_ARM_HASENTRY) |
9b485d32 | 9698 | fprintf (file, _(" [has entry point]")); |
252b5132 | 9699 | |
fc830a83 NC |
9700 | flags &= ~ (EF_ARM_RELEXEC | EF_ARM_HASENTRY); |
9701 | ||
9702 | if (flags) | |
9b485d32 | 9703 | fprintf (file, _("<Unrecognised flag bits set>")); |
9a5aca8c | 9704 | |
252b5132 RH |
9705 | fputc ('\n', file); |
9706 | ||
b34976b6 | 9707 | return TRUE; |
252b5132 RH |
9708 | } |
9709 | ||
9710 | static int | |
57e8b36a | 9711 | elf32_arm_get_symbol_type (Elf_Internal_Sym * elf_sym, int type) |
252b5132 | 9712 | { |
2f0ca46a NC |
9713 | switch (ELF_ST_TYPE (elf_sym->st_info)) |
9714 | { | |
9715 | case STT_ARM_TFUNC: | |
9716 | return ELF_ST_TYPE (elf_sym->st_info); | |
ce855c42 | 9717 | |
2f0ca46a NC |
9718 | case STT_ARM_16BIT: |
9719 | /* If the symbol is not an object, return the STT_ARM_16BIT flag. | |
9720 | This allows us to distinguish between data used by Thumb instructions | |
9721 | and non-data (which is probably code) inside Thumb regions of an | |
9722 | executable. */ | |
1a0eb693 | 9723 | if (type != STT_OBJECT && type != STT_TLS) |
2f0ca46a NC |
9724 | return ELF_ST_TYPE (elf_sym->st_info); |
9725 | break; | |
9a5aca8c | 9726 | |
ce855c42 NC |
9727 | default: |
9728 | break; | |
2f0ca46a NC |
9729 | } |
9730 | ||
9731 | return type; | |
252b5132 | 9732 | } |
f21f3fe0 | 9733 | |
252b5132 | 9734 | static asection * |
07adf181 AM |
9735 | elf32_arm_gc_mark_hook (asection *sec, |
9736 | struct bfd_link_info *info, | |
9737 | Elf_Internal_Rela *rel, | |
9738 | struct elf_link_hash_entry *h, | |
9739 | Elf_Internal_Sym *sym) | |
252b5132 RH |
9740 | { |
9741 | if (h != NULL) | |
07adf181 | 9742 | switch (ELF32_R_TYPE (rel->r_info)) |
252b5132 RH |
9743 | { |
9744 | case R_ARM_GNU_VTINHERIT: | |
9745 | case R_ARM_GNU_VTENTRY: | |
07adf181 AM |
9746 | return NULL; |
9747 | } | |
9ad5cbcf | 9748 | |
07adf181 | 9749 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
252b5132 RH |
9750 | } |
9751 | ||
780a67af NC |
9752 | /* Update the got entry reference counts for the section being removed. */ |
9753 | ||
b34976b6 | 9754 | static bfd_boolean |
ba93b8ac DJ |
9755 | elf32_arm_gc_sweep_hook (bfd * abfd, |
9756 | struct bfd_link_info * info, | |
9757 | asection * sec, | |
9758 | const Elf_Internal_Rela * relocs) | |
252b5132 | 9759 | { |
5e681ec4 PB |
9760 | Elf_Internal_Shdr *symtab_hdr; |
9761 | struct elf_link_hash_entry **sym_hashes; | |
9762 | bfd_signed_vma *local_got_refcounts; | |
9763 | const Elf_Internal_Rela *rel, *relend; | |
eb043451 PB |
9764 | struct elf32_arm_link_hash_table * globals; |
9765 | ||
7dda2462 TG |
9766 | if (info->relocatable) |
9767 | return TRUE; | |
9768 | ||
eb043451 | 9769 | globals = elf32_arm_hash_table (info); |
5e681ec4 PB |
9770 | |
9771 | elf_section_data (sec)->local_dynrel = NULL; | |
9772 | ||
0ffa91dd | 9773 | symtab_hdr = & elf_symtab_hdr (abfd); |
5e681ec4 PB |
9774 | sym_hashes = elf_sym_hashes (abfd); |
9775 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
9776 | ||
906e58ca | 9777 | check_use_blx (globals); |
bd97cb95 | 9778 | |
5e681ec4 PB |
9779 | relend = relocs + sec->reloc_count; |
9780 | for (rel = relocs; rel < relend; rel++) | |
eb043451 | 9781 | { |
3eb128b2 AM |
9782 | unsigned long r_symndx; |
9783 | struct elf_link_hash_entry *h = NULL; | |
eb043451 | 9784 | int r_type; |
5e681ec4 | 9785 | |
3eb128b2 AM |
9786 | r_symndx = ELF32_R_SYM (rel->r_info); |
9787 | if (r_symndx >= symtab_hdr->sh_info) | |
9788 | { | |
9789 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
9790 | while (h->root.type == bfd_link_hash_indirect | |
9791 | || h->root.type == bfd_link_hash_warning) | |
9792 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
9793 | } | |
9794 | ||
eb043451 | 9795 | r_type = ELF32_R_TYPE (rel->r_info); |
eb043451 | 9796 | r_type = arm_real_reloc_type (globals, r_type); |
eb043451 PB |
9797 | switch (r_type) |
9798 | { | |
9799 | case R_ARM_GOT32: | |
eb043451 | 9800 | case R_ARM_GOT_PREL: |
ba93b8ac DJ |
9801 | case R_ARM_TLS_GD32: |
9802 | case R_ARM_TLS_IE32: | |
3eb128b2 | 9803 | if (h != NULL) |
eb043451 | 9804 | { |
eb043451 PB |
9805 | if (h->got.refcount > 0) |
9806 | h->got.refcount -= 1; | |
9807 | } | |
9808 | else if (local_got_refcounts != NULL) | |
9809 | { | |
9810 | if (local_got_refcounts[r_symndx] > 0) | |
9811 | local_got_refcounts[r_symndx] -= 1; | |
9812 | } | |
9813 | break; | |
9814 | ||
ba93b8ac DJ |
9815 | case R_ARM_TLS_LDM32: |
9816 | elf32_arm_hash_table (info)->tls_ldm_got.refcount -= 1; | |
9817 | break; | |
9818 | ||
eb043451 | 9819 | case R_ARM_ABS32: |
bb224fc3 | 9820 | case R_ARM_ABS32_NOI: |
eb043451 | 9821 | case R_ARM_REL32: |
bb224fc3 | 9822 | case R_ARM_REL32_NOI: |
eb043451 PB |
9823 | case R_ARM_PC24: |
9824 | case R_ARM_PLT32: | |
5b5bb741 PB |
9825 | case R_ARM_CALL: |
9826 | case R_ARM_JUMP24: | |
eb043451 | 9827 | case R_ARM_PREL31: |
c19d1205 | 9828 | case R_ARM_THM_CALL: |
bd97cb95 DJ |
9829 | case R_ARM_THM_JUMP24: |
9830 | case R_ARM_THM_JUMP19: | |
b6895b4f PB |
9831 | case R_ARM_MOVW_ABS_NC: |
9832 | case R_ARM_MOVT_ABS: | |
9833 | case R_ARM_MOVW_PREL_NC: | |
9834 | case R_ARM_MOVT_PREL: | |
9835 | case R_ARM_THM_MOVW_ABS_NC: | |
9836 | case R_ARM_THM_MOVT_ABS: | |
9837 | case R_ARM_THM_MOVW_PREL_NC: | |
9838 | case R_ARM_THM_MOVT_PREL: | |
b7693d02 DJ |
9839 | /* Should the interworking branches be here also? */ |
9840 | ||
3eb128b2 | 9841 | if (h != NULL) |
eb043451 PB |
9842 | { |
9843 | struct elf32_arm_link_hash_entry *eh; | |
9844 | struct elf32_arm_relocs_copied **pp; | |
9845 | struct elf32_arm_relocs_copied *p; | |
5e681ec4 | 9846 | |
b7693d02 | 9847 | eh = (struct elf32_arm_link_hash_entry *) h; |
5e681ec4 | 9848 | |
eb043451 | 9849 | if (h->plt.refcount > 0) |
b7693d02 DJ |
9850 | { |
9851 | h->plt.refcount -= 1; | |
bd97cb95 DJ |
9852 | if (r_type == R_ARM_THM_CALL) |
9853 | eh->plt_maybe_thumb_refcount--; | |
9854 | ||
9855 | if (r_type == R_ARM_THM_JUMP24 | |
9856 | || r_type == R_ARM_THM_JUMP19) | |
b7693d02 DJ |
9857 | eh->plt_thumb_refcount--; |
9858 | } | |
5e681ec4 | 9859 | |
eb043451 | 9860 | if (r_type == R_ARM_ABS32 |
bb224fc3 MS |
9861 | || r_type == R_ARM_REL32 |
9862 | || r_type == R_ARM_ABS32_NOI | |
9863 | || r_type == R_ARM_REL32_NOI) | |
eb043451 | 9864 | { |
eb043451 PB |
9865 | for (pp = &eh->relocs_copied; (p = *pp) != NULL; |
9866 | pp = &p->next) | |
9867 | if (p->section == sec) | |
9868 | { | |
9869 | p->count -= 1; | |
bb224fc3 MS |
9870 | if (ELF32_R_TYPE (rel->r_info) == R_ARM_REL32 |
9871 | || ELF32_R_TYPE (rel->r_info) == R_ARM_REL32_NOI) | |
ba93b8ac | 9872 | p->pc_count -= 1; |
eb043451 PB |
9873 | if (p->count == 0) |
9874 | *pp = p->next; | |
9875 | break; | |
9876 | } | |
9877 | } | |
9878 | } | |
9879 | break; | |
5e681ec4 | 9880 | |
eb043451 PB |
9881 | default: |
9882 | break; | |
9883 | } | |
9884 | } | |
5e681ec4 | 9885 | |
b34976b6 | 9886 | return TRUE; |
252b5132 RH |
9887 | } |
9888 | ||
780a67af NC |
9889 | /* Look through the relocs for a section during the first phase. */ |
9890 | ||
b34976b6 | 9891 | static bfd_boolean |
57e8b36a NC |
9892 | elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info, |
9893 | asection *sec, const Elf_Internal_Rela *relocs) | |
252b5132 | 9894 | { |
b34976b6 AM |
9895 | Elf_Internal_Shdr *symtab_hdr; |
9896 | struct elf_link_hash_entry **sym_hashes; | |
b34976b6 AM |
9897 | const Elf_Internal_Rela *rel; |
9898 | const Elf_Internal_Rela *rel_end; | |
9899 | bfd *dynobj; | |
5e681ec4 | 9900 | asection *sreloc; |
b34976b6 | 9901 | bfd_vma *local_got_offsets; |
5e681ec4 | 9902 | struct elf32_arm_link_hash_table *htab; |
39623e12 | 9903 | bfd_boolean needs_plt; |
ce98a316 | 9904 | unsigned long nsyms; |
9a5aca8c | 9905 | |
1049f94e | 9906 | if (info->relocatable) |
b34976b6 | 9907 | return TRUE; |
9a5aca8c | 9908 | |
0ffa91dd NC |
9909 | BFD_ASSERT (is_arm_elf (abfd)); |
9910 | ||
5e681ec4 PB |
9911 | htab = elf32_arm_hash_table (info); |
9912 | sreloc = NULL; | |
9a5aca8c | 9913 | |
67687978 PB |
9914 | /* Create dynamic sections for relocatable executables so that we can |
9915 | copy relocations. */ | |
9916 | if (htab->root.is_relocatable_executable | |
9917 | && ! htab->root.dynamic_sections_created) | |
9918 | { | |
9919 | if (! _bfd_elf_link_create_dynamic_sections (abfd, info)) | |
9920 | return FALSE; | |
9921 | } | |
9922 | ||
252b5132 RH |
9923 | dynobj = elf_hash_table (info)->dynobj; |
9924 | local_got_offsets = elf_local_got_offsets (abfd); | |
f21f3fe0 | 9925 | |
0ffa91dd | 9926 | symtab_hdr = & elf_symtab_hdr (abfd); |
252b5132 | 9927 | sym_hashes = elf_sym_hashes (abfd); |
ce98a316 NC |
9928 | nsyms = NUM_SHDR_ENTRIES (symtab_hdr); |
9929 | ||
252b5132 RH |
9930 | rel_end = relocs + sec->reloc_count; |
9931 | for (rel = relocs; rel < rel_end; rel++) | |
9932 | { | |
9933 | struct elf_link_hash_entry *h; | |
b7693d02 | 9934 | struct elf32_arm_link_hash_entry *eh; |
252b5132 | 9935 | unsigned long r_symndx; |
eb043451 | 9936 | int r_type; |
9a5aca8c | 9937 | |
252b5132 | 9938 | r_symndx = ELF32_R_SYM (rel->r_info); |
eb043451 | 9939 | r_type = ELF32_R_TYPE (rel->r_info); |
eb043451 | 9940 | r_type = arm_real_reloc_type (htab, r_type); |
ba93b8ac | 9941 | |
ce98a316 NC |
9942 | if (r_symndx >= nsyms |
9943 | /* PR 9934: It is possible to have relocations that do not | |
9944 | refer to symbols, thus it is also possible to have an | |
9945 | object file containing relocations but no symbol table. */ | |
9946 | && (r_symndx > 0 || nsyms > 0)) | |
ba93b8ac DJ |
9947 | { |
9948 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd, | |
ce98a316 | 9949 | r_symndx); |
ba93b8ac DJ |
9950 | return FALSE; |
9951 | } | |
9952 | ||
ce98a316 | 9953 | if (nsyms == 0 || r_symndx < symtab_hdr->sh_info) |
252b5132 RH |
9954 | h = NULL; |
9955 | else | |
973a3492 L |
9956 | { |
9957 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
9958 | while (h->root.type == bfd_link_hash_indirect | |
9959 | || h->root.type == bfd_link_hash_warning) | |
9960 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
9961 | } | |
9a5aca8c | 9962 | |
b7693d02 DJ |
9963 | eh = (struct elf32_arm_link_hash_entry *) h; |
9964 | ||
eb043451 | 9965 | switch (r_type) |
252b5132 | 9966 | { |
5e681ec4 | 9967 | case R_ARM_GOT32: |
eb043451 | 9968 | case R_ARM_GOT_PREL: |
ba93b8ac DJ |
9969 | case R_ARM_TLS_GD32: |
9970 | case R_ARM_TLS_IE32: | |
5e681ec4 | 9971 | /* This symbol requires a global offset table entry. */ |
ba93b8ac DJ |
9972 | { |
9973 | int tls_type, old_tls_type; | |
5e681ec4 | 9974 | |
ba93b8ac DJ |
9975 | switch (r_type) |
9976 | { | |
9977 | case R_ARM_TLS_GD32: tls_type = GOT_TLS_GD; break; | |
9978 | case R_ARM_TLS_IE32: tls_type = GOT_TLS_IE; break; | |
9979 | default: tls_type = GOT_NORMAL; break; | |
9980 | } | |
252b5132 | 9981 | |
ba93b8ac DJ |
9982 | if (h != NULL) |
9983 | { | |
9984 | h->got.refcount++; | |
9985 | old_tls_type = elf32_arm_hash_entry (h)->tls_type; | |
9986 | } | |
9987 | else | |
9988 | { | |
9989 | bfd_signed_vma *local_got_refcounts; | |
9990 | ||
9991 | /* This is a global offset table entry for a local symbol. */ | |
9992 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
9993 | if (local_got_refcounts == NULL) | |
9994 | { | |
9995 | bfd_size_type size; | |
906e58ca | 9996 | |
ba93b8ac | 9997 | size = symtab_hdr->sh_info; |
906e58ca | 9998 | size *= (sizeof (bfd_signed_vma) + sizeof (char)); |
ba93b8ac DJ |
9999 | local_got_refcounts = bfd_zalloc (abfd, size); |
10000 | if (local_got_refcounts == NULL) | |
10001 | return FALSE; | |
10002 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
10003 | elf32_arm_local_got_tls_type (abfd) | |
10004 | = (char *) (local_got_refcounts + symtab_hdr->sh_info); | |
10005 | } | |
10006 | local_got_refcounts[r_symndx] += 1; | |
10007 | old_tls_type = elf32_arm_local_got_tls_type (abfd) [r_symndx]; | |
10008 | } | |
10009 | ||
10010 | /* We will already have issued an error message if there is a | |
10011 | TLS / non-TLS mismatch, based on the symbol type. We don't | |
10012 | support any linker relaxations. So just combine any TLS | |
10013 | types needed. */ | |
10014 | if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL | |
10015 | && tls_type != GOT_NORMAL) | |
10016 | tls_type |= old_tls_type; | |
10017 | ||
10018 | if (old_tls_type != tls_type) | |
10019 | { | |
10020 | if (h != NULL) | |
10021 | elf32_arm_hash_entry (h)->tls_type = tls_type; | |
10022 | else | |
10023 | elf32_arm_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
10024 | } | |
10025 | } | |
8029a119 | 10026 | /* Fall through. */ |
ba93b8ac DJ |
10027 | |
10028 | case R_ARM_TLS_LDM32: | |
10029 | if (r_type == R_ARM_TLS_LDM32) | |
10030 | htab->tls_ldm_got.refcount++; | |
8029a119 | 10031 | /* Fall through. */ |
252b5132 | 10032 | |
c19d1205 | 10033 | case R_ARM_GOTOFF32: |
5e681ec4 PB |
10034 | case R_ARM_GOTPC: |
10035 | if (htab->sgot == NULL) | |
10036 | { | |
10037 | if (htab->root.dynobj == NULL) | |
10038 | htab->root.dynobj = abfd; | |
10039 | if (!create_got_section (htab->root.dynobj, info)) | |
10040 | return FALSE; | |
10041 | } | |
252b5132 RH |
10042 | break; |
10043 | ||
00a97672 RS |
10044 | case R_ARM_ABS12: |
10045 | /* VxWorks uses dynamic R_ARM_ABS12 relocations for | |
10046 | ldr __GOTT_INDEX__ offsets. */ | |
10047 | if (!htab->vxworks_p) | |
10048 | break; | |
8029a119 | 10049 | /* Fall through. */ |
00a97672 | 10050 | |
252b5132 | 10051 | case R_ARM_PC24: |
7359ea65 | 10052 | case R_ARM_PLT32: |
5b5bb741 PB |
10053 | case R_ARM_CALL: |
10054 | case R_ARM_JUMP24: | |
eb043451 | 10055 | case R_ARM_PREL31: |
c19d1205 | 10056 | case R_ARM_THM_CALL: |
bd97cb95 DJ |
10057 | case R_ARM_THM_JUMP24: |
10058 | case R_ARM_THM_JUMP19: | |
39623e12 PB |
10059 | needs_plt = 1; |
10060 | goto normal_reloc; | |
10061 | ||
96c23d59 JM |
10062 | case R_ARM_MOVW_ABS_NC: |
10063 | case R_ARM_MOVT_ABS: | |
10064 | case R_ARM_THM_MOVW_ABS_NC: | |
10065 | case R_ARM_THM_MOVT_ABS: | |
10066 | if (info->shared) | |
10067 | { | |
10068 | (*_bfd_error_handler) | |
10069 | (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"), | |
10070 | abfd, elf32_arm_howto_table_1[r_type].name, | |
10071 | (h) ? h->root.root.string : "a local symbol"); | |
10072 | bfd_set_error (bfd_error_bad_value); | |
10073 | return FALSE; | |
10074 | } | |
10075 | ||
10076 | /* Fall through. */ | |
39623e12 PB |
10077 | case R_ARM_ABS32: |
10078 | case R_ARM_ABS32_NOI: | |
10079 | case R_ARM_REL32: | |
10080 | case R_ARM_REL32_NOI: | |
b6895b4f PB |
10081 | case R_ARM_MOVW_PREL_NC: |
10082 | case R_ARM_MOVT_PREL: | |
b6895b4f PB |
10083 | case R_ARM_THM_MOVW_PREL_NC: |
10084 | case R_ARM_THM_MOVT_PREL: | |
39623e12 PB |
10085 | needs_plt = 0; |
10086 | normal_reloc: | |
10087 | ||
b7693d02 | 10088 | /* Should the interworking branches be listed here? */ |
7359ea65 | 10089 | if (h != NULL) |
5e681ec4 PB |
10090 | { |
10091 | /* If this reloc is in a read-only section, we might | |
10092 | need a copy reloc. We can't check reliably at this | |
10093 | stage whether the section is read-only, as input | |
10094 | sections have not yet been mapped to output sections. | |
10095 | Tentatively set the flag for now, and correct in | |
10096 | adjust_dynamic_symbol. */ | |
7359ea65 | 10097 | if (!info->shared) |
f5385ebf | 10098 | h->non_got_ref = 1; |
7359ea65 | 10099 | |
5e681ec4 | 10100 | /* We may need a .plt entry if the function this reloc |
c84cd8ee DJ |
10101 | refers to is in a different object. We can't tell for |
10102 | sure yet, because something later might force the | |
10103 | symbol local. */ | |
39623e12 | 10104 | if (needs_plt) |
f5385ebf | 10105 | h->needs_plt = 1; |
4f199be3 DJ |
10106 | |
10107 | /* If we create a PLT entry, this relocation will reference | |
10108 | it, even if it's an ABS32 relocation. */ | |
10109 | h->plt.refcount += 1; | |
b7693d02 | 10110 | |
bd97cb95 DJ |
10111 | /* It's too early to use htab->use_blx here, so we have to |
10112 | record possible blx references separately from | |
10113 | relocs that definitely need a thumb stub. */ | |
10114 | ||
c19d1205 | 10115 | if (r_type == R_ARM_THM_CALL) |
bd97cb95 DJ |
10116 | eh->plt_maybe_thumb_refcount += 1; |
10117 | ||
10118 | if (r_type == R_ARM_THM_JUMP24 | |
10119 | || r_type == R_ARM_THM_JUMP19) | |
b7693d02 | 10120 | eh->plt_thumb_refcount += 1; |
5e681ec4 PB |
10121 | } |
10122 | ||
67687978 PB |
10123 | /* If we are creating a shared library or relocatable executable, |
10124 | and this is a reloc against a global symbol, or a non PC | |
10125 | relative reloc against a local symbol, then we need to copy | |
10126 | the reloc into the shared library. However, if we are linking | |
10127 | with -Bsymbolic, we do not need to copy a reloc against a | |
252b5132 RH |
10128 | global symbol which is defined in an object we are |
10129 | including in the link (i.e., DEF_REGULAR is set). At | |
10130 | this point we have not seen all the input files, so it is | |
10131 | possible that DEF_REGULAR is not set now but will be set | |
10132 | later (it is never cleared). We account for that | |
10133 | possibility below by storing information in the | |
5e681ec4 | 10134 | relocs_copied field of the hash table entry. */ |
67687978 | 10135 | if ((info->shared || htab->root.is_relocatable_executable) |
5e681ec4 | 10136 | && (sec->flags & SEC_ALLOC) != 0 |
bb224fc3 | 10137 | && ((r_type == R_ARM_ABS32 || r_type == R_ARM_ABS32_NOI) |
71a976dd DJ |
10138 | || (h != NULL && ! h->needs_plt |
10139 | && (! info->symbolic || ! h->def_regular)))) | |
252b5132 | 10140 | { |
5e681ec4 PB |
10141 | struct elf32_arm_relocs_copied *p, **head; |
10142 | ||
252b5132 RH |
10143 | /* When creating a shared object, we must copy these |
10144 | reloc types into the output file. We create a reloc | |
10145 | section in dynobj and make room for this reloc. */ | |
83bac4b0 | 10146 | if (sreloc == NULL) |
252b5132 | 10147 | { |
83bac4b0 NC |
10148 | sreloc = _bfd_elf_make_dynamic_reloc_section |
10149 | (sec, dynobj, 2, abfd, ! htab->use_rel); | |
252b5132 | 10150 | |
83bac4b0 | 10151 | if (sreloc == NULL) |
b34976b6 | 10152 | return FALSE; |
252b5132 | 10153 | |
83bac4b0 | 10154 | /* BPABI objects never have dynamic relocations mapped. */ |
a89e6478 | 10155 | if (htab->symbian_p) |
252b5132 | 10156 | { |
83bac4b0 | 10157 | flagword flags; |
5e681ec4 | 10158 | |
83bac4b0 | 10159 | flags = bfd_get_section_flags (dynobj, sreloc); |
a89e6478 | 10160 | flags &= ~(SEC_LOAD | SEC_ALLOC); |
83bac4b0 NC |
10161 | bfd_set_section_flags (dynobj, sreloc, flags); |
10162 | } | |
252b5132 RH |
10163 | } |
10164 | ||
5e681ec4 PB |
10165 | /* If this is a global symbol, we count the number of |
10166 | relocations we need for this symbol. */ | |
10167 | if (h != NULL) | |
252b5132 | 10168 | { |
5e681ec4 PB |
10169 | head = &((struct elf32_arm_link_hash_entry *) h)->relocs_copied; |
10170 | } | |
10171 | else | |
10172 | { | |
10173 | /* Track dynamic relocs needed for local syms too. | |
10174 | We really need local syms available to do this | |
10175 | easily. Oh well. */ | |
57e8b36a | 10176 | |
5e681ec4 | 10177 | asection *s; |
6edfbbad DJ |
10178 | void *vpp; |
10179 | ||
5e681ec4 PB |
10180 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, |
10181 | sec, r_symndx); | |
10182 | if (s == NULL) | |
10183 | return FALSE; | |
57e8b36a | 10184 | |
6edfbbad DJ |
10185 | vpp = &elf_section_data (s)->local_dynrel; |
10186 | head = (struct elf32_arm_relocs_copied **) vpp; | |
5e681ec4 | 10187 | } |
57e8b36a | 10188 | |
5e681ec4 PB |
10189 | p = *head; |
10190 | if (p == NULL || p->section != sec) | |
10191 | { | |
10192 | bfd_size_type amt = sizeof *p; | |
57e8b36a | 10193 | |
5e681ec4 | 10194 | p = bfd_alloc (htab->root.dynobj, amt); |
252b5132 | 10195 | if (p == NULL) |
5e681ec4 PB |
10196 | return FALSE; |
10197 | p->next = *head; | |
10198 | *head = p; | |
10199 | p->section = sec; | |
10200 | p->count = 0; | |
ba93b8ac | 10201 | p->pc_count = 0; |
252b5132 | 10202 | } |
57e8b36a | 10203 | |
bb224fc3 | 10204 | if (r_type == R_ARM_REL32 || r_type == R_ARM_REL32_NOI) |
ba93b8ac | 10205 | p->pc_count += 1; |
71a976dd | 10206 | p->count += 1; |
252b5132 RH |
10207 | } |
10208 | break; | |
10209 | ||
10210 | /* This relocation describes the C++ object vtable hierarchy. | |
10211 | Reconstruct it for later use during GC. */ | |
10212 | case R_ARM_GNU_VTINHERIT: | |
c152c796 | 10213 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 10214 | return FALSE; |
252b5132 | 10215 | break; |
9a5aca8c | 10216 | |
252b5132 RH |
10217 | /* This relocation describes which C++ vtable entries are actually |
10218 | used. Record for later use during GC. */ | |
10219 | case R_ARM_GNU_VTENTRY: | |
d17e0c6e JB |
10220 | BFD_ASSERT (h != NULL); |
10221 | if (h != NULL | |
10222 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 10223 | return FALSE; |
252b5132 RH |
10224 | break; |
10225 | } | |
10226 | } | |
f21f3fe0 | 10227 | |
b34976b6 | 10228 | return TRUE; |
252b5132 RH |
10229 | } |
10230 | ||
6a5bb875 PB |
10231 | /* Unwinding tables are not referenced directly. This pass marks them as |
10232 | required if the corresponding code section is marked. */ | |
10233 | ||
10234 | static bfd_boolean | |
906e58ca NC |
10235 | elf32_arm_gc_mark_extra_sections (struct bfd_link_info *info, |
10236 | elf_gc_mark_hook_fn gc_mark_hook) | |
6a5bb875 PB |
10237 | { |
10238 | bfd *sub; | |
10239 | Elf_Internal_Shdr **elf_shdrp; | |
10240 | bfd_boolean again; | |
10241 | ||
10242 | /* Marking EH data may cause additional code sections to be marked, | |
10243 | requiring multiple passes. */ | |
10244 | again = TRUE; | |
10245 | while (again) | |
10246 | { | |
10247 | again = FALSE; | |
10248 | for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) | |
10249 | { | |
10250 | asection *o; | |
10251 | ||
0ffa91dd | 10252 | if (! is_arm_elf (sub)) |
6a5bb875 PB |
10253 | continue; |
10254 | ||
10255 | elf_shdrp = elf_elfsections (sub); | |
10256 | for (o = sub->sections; o != NULL; o = o->next) | |
10257 | { | |
10258 | Elf_Internal_Shdr *hdr; | |
0ffa91dd | 10259 | |
6a5bb875 | 10260 | hdr = &elf_section_data (o)->this_hdr; |
4fbb74a6 AM |
10261 | if (hdr->sh_type == SHT_ARM_EXIDX |
10262 | && hdr->sh_link | |
10263 | && hdr->sh_link < elf_numsections (sub) | |
6a5bb875 PB |
10264 | && !o->gc_mark |
10265 | && elf_shdrp[hdr->sh_link]->bfd_section->gc_mark) | |
10266 | { | |
10267 | again = TRUE; | |
10268 | if (!_bfd_elf_gc_mark (info, o, gc_mark_hook)) | |
10269 | return FALSE; | |
10270 | } | |
10271 | } | |
10272 | } | |
10273 | } | |
10274 | ||
10275 | return TRUE; | |
10276 | } | |
10277 | ||
3c9458e9 NC |
10278 | /* Treat mapping symbols as special target symbols. */ |
10279 | ||
10280 | static bfd_boolean | |
10281 | elf32_arm_is_target_special_symbol (bfd * abfd ATTRIBUTE_UNUSED, asymbol * sym) | |
10282 | { | |
b0796911 PB |
10283 | return bfd_is_arm_special_symbol_name (sym->name, |
10284 | BFD_ARM_SPECIAL_SYM_TYPE_ANY); | |
3c9458e9 NC |
10285 | } |
10286 | ||
0367ecfb NC |
10287 | /* This is a copy of elf_find_function() from elf.c except that |
10288 | ARM mapping symbols are ignored when looking for function names | |
10289 | and STT_ARM_TFUNC is considered to a function type. */ | |
252b5132 | 10290 | |
0367ecfb NC |
10291 | static bfd_boolean |
10292 | arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED, | |
10293 | asection * section, | |
10294 | asymbol ** symbols, | |
10295 | bfd_vma offset, | |
10296 | const char ** filename_ptr, | |
10297 | const char ** functionname_ptr) | |
10298 | { | |
10299 | const char * filename = NULL; | |
10300 | asymbol * func = NULL; | |
10301 | bfd_vma low_func = 0; | |
10302 | asymbol ** p; | |
252b5132 RH |
10303 | |
10304 | for (p = symbols; *p != NULL; p++) | |
10305 | { | |
10306 | elf_symbol_type *q; | |
10307 | ||
10308 | q = (elf_symbol_type *) *p; | |
10309 | ||
252b5132 RH |
10310 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) |
10311 | { | |
10312 | default: | |
10313 | break; | |
10314 | case STT_FILE: | |
10315 | filename = bfd_asymbol_name (&q->symbol); | |
10316 | break; | |
252b5132 RH |
10317 | case STT_FUNC: |
10318 | case STT_ARM_TFUNC: | |
9d2da7ca | 10319 | case STT_NOTYPE: |
b0796911 | 10320 | /* Skip mapping symbols. */ |
0367ecfb | 10321 | if ((q->symbol.flags & BSF_LOCAL) |
b0796911 PB |
10322 | && bfd_is_arm_special_symbol_name (q->symbol.name, |
10323 | BFD_ARM_SPECIAL_SYM_TYPE_ANY)) | |
0367ecfb NC |
10324 | continue; |
10325 | /* Fall through. */ | |
6b40fcba | 10326 | if (bfd_get_section (&q->symbol) == section |
252b5132 RH |
10327 | && q->symbol.value >= low_func |
10328 | && q->symbol.value <= offset) | |
10329 | { | |
10330 | func = (asymbol *) q; | |
10331 | low_func = q->symbol.value; | |
10332 | } | |
10333 | break; | |
10334 | } | |
10335 | } | |
10336 | ||
10337 | if (func == NULL) | |
b34976b6 | 10338 | return FALSE; |
252b5132 | 10339 | |
0367ecfb NC |
10340 | if (filename_ptr) |
10341 | *filename_ptr = filename; | |
10342 | if (functionname_ptr) | |
10343 | *functionname_ptr = bfd_asymbol_name (func); | |
10344 | ||
10345 | return TRUE; | |
906e58ca | 10346 | } |
0367ecfb NC |
10347 | |
10348 | ||
10349 | /* Find the nearest line to a particular section and offset, for error | |
10350 | reporting. This code is a duplicate of the code in elf.c, except | |
10351 | that it uses arm_elf_find_function. */ | |
10352 | ||
10353 | static bfd_boolean | |
10354 | elf32_arm_find_nearest_line (bfd * abfd, | |
10355 | asection * section, | |
10356 | asymbol ** symbols, | |
10357 | bfd_vma offset, | |
10358 | const char ** filename_ptr, | |
10359 | const char ** functionname_ptr, | |
10360 | unsigned int * line_ptr) | |
10361 | { | |
10362 | bfd_boolean found = FALSE; | |
10363 | ||
10364 | /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */ | |
10365 | ||
10366 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
10367 | filename_ptr, functionname_ptr, | |
10368 | line_ptr, 0, | |
10369 | & elf_tdata (abfd)->dwarf2_find_line_info)) | |
10370 | { | |
10371 | if (!*functionname_ptr) | |
10372 | arm_elf_find_function (abfd, section, symbols, offset, | |
10373 | *filename_ptr ? NULL : filename_ptr, | |
10374 | functionname_ptr); | |
f21f3fe0 | 10375 | |
0367ecfb NC |
10376 | return TRUE; |
10377 | } | |
10378 | ||
10379 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
10380 | & found, filename_ptr, | |
10381 | functionname_ptr, line_ptr, | |
10382 | & elf_tdata (abfd)->line_info)) | |
10383 | return FALSE; | |
10384 | ||
10385 | if (found && (*functionname_ptr || *line_ptr)) | |
10386 | return TRUE; | |
10387 | ||
10388 | if (symbols == NULL) | |
10389 | return FALSE; | |
10390 | ||
10391 | if (! arm_elf_find_function (abfd, section, symbols, offset, | |
10392 | filename_ptr, functionname_ptr)) | |
10393 | return FALSE; | |
10394 | ||
10395 | *line_ptr = 0; | |
b34976b6 | 10396 | return TRUE; |
252b5132 RH |
10397 | } |
10398 | ||
4ab527b0 FF |
10399 | static bfd_boolean |
10400 | elf32_arm_find_inliner_info (bfd * abfd, | |
10401 | const char ** filename_ptr, | |
10402 | const char ** functionname_ptr, | |
10403 | unsigned int * line_ptr) | |
10404 | { | |
10405 | bfd_boolean found; | |
10406 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
10407 | functionname_ptr, line_ptr, | |
10408 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
10409 | return found; | |
10410 | } | |
10411 | ||
252b5132 RH |
10412 | /* Adjust a symbol defined by a dynamic object and referenced by a |
10413 | regular object. The current definition is in some section of the | |
10414 | dynamic object, but we're not including those sections. We have to | |
10415 | change the definition to something the rest of the link can | |
10416 | understand. */ | |
10417 | ||
b34976b6 | 10418 | static bfd_boolean |
57e8b36a NC |
10419 | elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info, |
10420 | struct elf_link_hash_entry * h) | |
252b5132 RH |
10421 | { |
10422 | bfd * dynobj; | |
10423 | asection * s; | |
b7693d02 | 10424 | struct elf32_arm_link_hash_entry * eh; |
67687978 | 10425 | struct elf32_arm_link_hash_table *globals; |
252b5132 | 10426 | |
67687978 | 10427 | globals = elf32_arm_hash_table (info); |
252b5132 RH |
10428 | dynobj = elf_hash_table (info)->dynobj; |
10429 | ||
10430 | /* Make sure we know what is going on here. */ | |
10431 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 10432 | && (h->needs_plt |
f6e332e6 | 10433 | || h->u.weakdef != NULL |
f5385ebf AM |
10434 | || (h->def_dynamic |
10435 | && h->ref_regular | |
10436 | && !h->def_regular))); | |
252b5132 | 10437 | |
b7693d02 DJ |
10438 | eh = (struct elf32_arm_link_hash_entry *) h; |
10439 | ||
252b5132 RH |
10440 | /* If this is a function, put it in the procedure linkage table. We |
10441 | will fill in the contents of the procedure linkage table later, | |
10442 | when we know the address of the .got section. */ | |
0f88be7a | 10443 | if (h->type == STT_FUNC || h->type == STT_ARM_TFUNC |
f5385ebf | 10444 | || h->needs_plt) |
252b5132 | 10445 | { |
5e681ec4 PB |
10446 | if (h->plt.refcount <= 0 |
10447 | || SYMBOL_CALLS_LOCAL (info, h) | |
10448 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
10449 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
10450 | { |
10451 | /* This case can occur if we saw a PLT32 reloc in an input | |
5e681ec4 PB |
10452 | file, but the symbol was never referred to by a dynamic |
10453 | object, or if all references were garbage collected. In | |
10454 | such a case, we don't actually need to build a procedure | |
10455 | linkage table, and we can just do a PC24 reloc instead. */ | |
10456 | h->plt.offset = (bfd_vma) -1; | |
b7693d02 | 10457 | eh->plt_thumb_refcount = 0; |
bd97cb95 | 10458 | eh->plt_maybe_thumb_refcount = 0; |
f5385ebf | 10459 | h->needs_plt = 0; |
252b5132 RH |
10460 | } |
10461 | ||
b34976b6 | 10462 | return TRUE; |
252b5132 | 10463 | } |
5e681ec4 | 10464 | else |
b7693d02 DJ |
10465 | { |
10466 | /* It's possible that we incorrectly decided a .plt reloc was | |
10467 | needed for an R_ARM_PC24 or similar reloc to a non-function sym | |
10468 | in check_relocs. We can't decide accurately between function | |
10469 | and non-function syms in check-relocs; Objects loaded later in | |
10470 | the link may change h->type. So fix it now. */ | |
10471 | h->plt.offset = (bfd_vma) -1; | |
10472 | eh->plt_thumb_refcount = 0; | |
bd97cb95 | 10473 | eh->plt_maybe_thumb_refcount = 0; |
b7693d02 | 10474 | } |
252b5132 RH |
10475 | |
10476 | /* If this is a weak symbol, and there is a real definition, the | |
10477 | processor independent code will have arranged for us to see the | |
10478 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 10479 | if (h->u.weakdef != NULL) |
252b5132 | 10480 | { |
f6e332e6 AM |
10481 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
10482 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
10483 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
10484 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 10485 | return TRUE; |
252b5132 RH |
10486 | } |
10487 | ||
ba93b8ac DJ |
10488 | /* If there are no non-GOT references, we do not need a copy |
10489 | relocation. */ | |
10490 | if (!h->non_got_ref) | |
10491 | return TRUE; | |
10492 | ||
252b5132 RH |
10493 | /* This is a reference to a symbol defined by a dynamic object which |
10494 | is not a function. */ | |
10495 | ||
10496 | /* If we are creating a shared library, we must presume that the | |
10497 | only references to the symbol are via the global offset table. | |
10498 | For such cases we need not do anything here; the relocations will | |
67687978 PB |
10499 | be handled correctly by relocate_section. Relocatable executables |
10500 | can reference data in shared objects directly, so we don't need to | |
10501 | do anything here. */ | |
10502 | if (info->shared || globals->root.is_relocatable_executable) | |
b34976b6 | 10503 | return TRUE; |
252b5132 | 10504 | |
909272ee AM |
10505 | if (h->size == 0) |
10506 | { | |
10507 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
10508 | h->root.root.string); | |
10509 | return TRUE; | |
10510 | } | |
10511 | ||
252b5132 RH |
10512 | /* We must allocate the symbol in our .dynbss section, which will |
10513 | become part of the .bss section of the executable. There will be | |
10514 | an entry for this symbol in the .dynsym section. The dynamic | |
10515 | object will contain position independent code, so all references | |
10516 | from the dynamic object to this symbol will go through the global | |
10517 | offset table. The dynamic linker will use the .dynsym entry to | |
10518 | determine the address it must put in the global offset table, so | |
10519 | both the dynamic object and the regular object will refer to the | |
10520 | same memory location for the variable. */ | |
252b5132 RH |
10521 | s = bfd_get_section_by_name (dynobj, ".dynbss"); |
10522 | BFD_ASSERT (s != NULL); | |
10523 | ||
10524 | /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to | |
10525 | copy the initial value out of the dynamic object and into the | |
10526 | runtime process image. We need to remember the offset into the | |
00a97672 | 10527 | .rel(a).bss section we are going to use. */ |
252b5132 RH |
10528 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
10529 | { | |
10530 | asection *srel; | |
10531 | ||
00a97672 | 10532 | srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (globals, ".bss")); |
252b5132 | 10533 | BFD_ASSERT (srel != NULL); |
00a97672 | 10534 | srel->size += RELOC_SIZE (globals); |
f5385ebf | 10535 | h->needs_copy = 1; |
252b5132 RH |
10536 | } |
10537 | ||
027297b7 | 10538 | return _bfd_elf_adjust_dynamic_copy (h, s); |
252b5132 RH |
10539 | } |
10540 | ||
5e681ec4 PB |
10541 | /* Allocate space in .plt, .got and associated reloc sections for |
10542 | dynamic relocs. */ | |
10543 | ||
10544 | static bfd_boolean | |
57e8b36a | 10545 | allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
5e681ec4 PB |
10546 | { |
10547 | struct bfd_link_info *info; | |
10548 | struct elf32_arm_link_hash_table *htab; | |
10549 | struct elf32_arm_link_hash_entry *eh; | |
10550 | struct elf32_arm_relocs_copied *p; | |
bd97cb95 | 10551 | bfd_signed_vma thumb_refs; |
5e681ec4 | 10552 | |
b7693d02 DJ |
10553 | eh = (struct elf32_arm_link_hash_entry *) h; |
10554 | ||
5e681ec4 PB |
10555 | if (h->root.type == bfd_link_hash_indirect) |
10556 | return TRUE; | |
10557 | ||
10558 | if (h->root.type == bfd_link_hash_warning) | |
10559 | /* When warning symbols are created, they **replace** the "real" | |
10560 | entry in the hash table, thus we never get to see the real | |
10561 | symbol in a hash traversal. So look at it now. */ | |
10562 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
10563 | ||
10564 | info = (struct bfd_link_info *) inf; | |
10565 | htab = elf32_arm_hash_table (info); | |
10566 | ||
10567 | if (htab->root.dynamic_sections_created | |
10568 | && h->plt.refcount > 0) | |
10569 | { | |
10570 | /* Make sure this symbol is output as a dynamic symbol. | |
10571 | Undefined weak syms won't yet be marked as dynamic. */ | |
10572 | if (h->dynindx == -1 | |
f5385ebf | 10573 | && !h->forced_local) |
5e681ec4 | 10574 | { |
c152c796 | 10575 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
10576 | return FALSE; |
10577 | } | |
10578 | ||
10579 | if (info->shared | |
7359ea65 | 10580 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
5e681ec4 PB |
10581 | { |
10582 | asection *s = htab->splt; | |
10583 | ||
10584 | /* If this is the first .plt entry, make room for the special | |
10585 | first entry. */ | |
eea6121a | 10586 | if (s->size == 0) |
e5a52504 | 10587 | s->size += htab->plt_header_size; |
5e681ec4 | 10588 | |
eea6121a | 10589 | h->plt.offset = s->size; |
5e681ec4 | 10590 | |
b7693d02 DJ |
10591 | /* If we will insert a Thumb trampoline before this PLT, leave room |
10592 | for it. */ | |
bd97cb95 DJ |
10593 | thumb_refs = eh->plt_thumb_refcount; |
10594 | if (!htab->use_blx) | |
10595 | thumb_refs += eh->plt_maybe_thumb_refcount; | |
10596 | ||
10597 | if (thumb_refs > 0) | |
b7693d02 DJ |
10598 | { |
10599 | h->plt.offset += PLT_THUMB_STUB_SIZE; | |
10600 | s->size += PLT_THUMB_STUB_SIZE; | |
10601 | } | |
10602 | ||
5e681ec4 PB |
10603 | /* If this symbol is not defined in a regular file, and we are |
10604 | not generating a shared library, then set the symbol to this | |
10605 | location in the .plt. This is required to make function | |
10606 | pointers compare as equal between the normal executable and | |
10607 | the shared library. */ | |
10608 | if (! info->shared | |
f5385ebf | 10609 | && !h->def_regular) |
5e681ec4 PB |
10610 | { |
10611 | h->root.u.def.section = s; | |
10612 | h->root.u.def.value = h->plt.offset; | |
b7693d02 DJ |
10613 | |
10614 | /* Make sure the function is not marked as Thumb, in case | |
10615 | it is the target of an ABS32 relocation, which will | |
10616 | point to the PLT entry. */ | |
10617 | if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC) | |
10618 | h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC); | |
5e681ec4 PB |
10619 | } |
10620 | ||
10621 | /* Make room for this entry. */ | |
e5a52504 | 10622 | s->size += htab->plt_entry_size; |
5e681ec4 | 10623 | |
e5a52504 | 10624 | if (!htab->symbian_p) |
b7693d02 DJ |
10625 | { |
10626 | /* We also need to make an entry in the .got.plt section, which | |
10627 | will be placed in the .got section by the linker script. */ | |
10628 | eh->plt_got_offset = htab->sgotplt->size; | |
10629 | htab->sgotplt->size += 4; | |
10630 | } | |
5e681ec4 | 10631 | |
00a97672 RS |
10632 | /* We also need to make an entry in the .rel(a).plt section. */ |
10633 | htab->srelplt->size += RELOC_SIZE (htab); | |
10634 | ||
10635 | /* VxWorks executables have a second set of relocations for | |
10636 | each PLT entry. They go in a separate relocation section, | |
10637 | which is processed by the kernel loader. */ | |
10638 | if (htab->vxworks_p && !info->shared) | |
10639 | { | |
10640 | /* There is a relocation for the initial PLT entry: | |
10641 | an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */ | |
10642 | if (h->plt.offset == htab->plt_header_size) | |
10643 | htab->srelplt2->size += RELOC_SIZE (htab); | |
10644 | ||
10645 | /* There are two extra relocations for each subsequent | |
10646 | PLT entry: an R_ARM_32 relocation for the GOT entry, | |
10647 | and an R_ARM_32 relocation for the PLT entry. */ | |
10648 | htab->srelplt2->size += RELOC_SIZE (htab) * 2; | |
10649 | } | |
5e681ec4 PB |
10650 | } |
10651 | else | |
10652 | { | |
10653 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 10654 | h->needs_plt = 0; |
5e681ec4 PB |
10655 | } |
10656 | } | |
10657 | else | |
10658 | { | |
10659 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 10660 | h->needs_plt = 0; |
5e681ec4 PB |
10661 | } |
10662 | ||
10663 | if (h->got.refcount > 0) | |
10664 | { | |
10665 | asection *s; | |
10666 | bfd_boolean dyn; | |
ba93b8ac DJ |
10667 | int tls_type = elf32_arm_hash_entry (h)->tls_type; |
10668 | int indx; | |
5e681ec4 PB |
10669 | |
10670 | /* Make sure this symbol is output as a dynamic symbol. | |
10671 | Undefined weak syms won't yet be marked as dynamic. */ | |
10672 | if (h->dynindx == -1 | |
f5385ebf | 10673 | && !h->forced_local) |
5e681ec4 | 10674 | { |
c152c796 | 10675 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
10676 | return FALSE; |
10677 | } | |
10678 | ||
e5a52504 MM |
10679 | if (!htab->symbian_p) |
10680 | { | |
10681 | s = htab->sgot; | |
10682 | h->got.offset = s->size; | |
ba93b8ac DJ |
10683 | |
10684 | if (tls_type == GOT_UNKNOWN) | |
10685 | abort (); | |
10686 | ||
10687 | if (tls_type == GOT_NORMAL) | |
10688 | /* Non-TLS symbols need one GOT slot. */ | |
10689 | s->size += 4; | |
10690 | else | |
10691 | { | |
10692 | if (tls_type & GOT_TLS_GD) | |
10693 | /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */ | |
10694 | s->size += 8; | |
10695 | if (tls_type & GOT_TLS_IE) | |
10696 | /* R_ARM_TLS_IE32 needs one GOT slot. */ | |
10697 | s->size += 4; | |
10698 | } | |
10699 | ||
e5a52504 | 10700 | dyn = htab->root.dynamic_sections_created; |
ba93b8ac DJ |
10701 | |
10702 | indx = 0; | |
10703 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
10704 | && (!info->shared | |
10705 | || !SYMBOL_REFERENCES_LOCAL (info, h))) | |
10706 | indx = h->dynindx; | |
10707 | ||
10708 | if (tls_type != GOT_NORMAL | |
10709 | && (info->shared || indx != 0) | |
10710 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
10711 | || h->root.type != bfd_link_hash_undefweak)) | |
10712 | { | |
10713 | if (tls_type & GOT_TLS_IE) | |
00a97672 | 10714 | htab->srelgot->size += RELOC_SIZE (htab); |
ba93b8ac DJ |
10715 | |
10716 | if (tls_type & GOT_TLS_GD) | |
00a97672 | 10717 | htab->srelgot->size += RELOC_SIZE (htab); |
ba93b8ac DJ |
10718 | |
10719 | if ((tls_type & GOT_TLS_GD) && indx != 0) | |
00a97672 | 10720 | htab->srelgot->size += RELOC_SIZE (htab); |
ba93b8ac DJ |
10721 | } |
10722 | else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
10723 | || h->root.type != bfd_link_hash_undefweak) | |
10724 | && (info->shared | |
10725 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
00a97672 | 10726 | htab->srelgot->size += RELOC_SIZE (htab); |
e5a52504 | 10727 | } |
5e681ec4 PB |
10728 | } |
10729 | else | |
10730 | h->got.offset = (bfd_vma) -1; | |
10731 | ||
a4fd1a8e PB |
10732 | /* Allocate stubs for exported Thumb functions on v4t. */ |
10733 | if (!htab->use_blx && h->dynindx != -1 | |
0eaedd0e | 10734 | && h->def_regular |
a4fd1a8e PB |
10735 | && ELF_ST_TYPE (h->type) == STT_ARM_TFUNC |
10736 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
10737 | { | |
10738 | struct elf_link_hash_entry * th; | |
10739 | struct bfd_link_hash_entry * bh; | |
10740 | struct elf_link_hash_entry * myh; | |
10741 | char name[1024]; | |
10742 | asection *s; | |
10743 | bh = NULL; | |
10744 | /* Create a new symbol to regist the real location of the function. */ | |
10745 | s = h->root.u.def.section; | |
906e58ca | 10746 | sprintf (name, "__real_%s", h->root.root.string); |
a4fd1a8e PB |
10747 | _bfd_generic_link_add_one_symbol (info, s->owner, |
10748 | name, BSF_GLOBAL, s, | |
10749 | h->root.u.def.value, | |
10750 | NULL, TRUE, FALSE, &bh); | |
10751 | ||
10752 | myh = (struct elf_link_hash_entry *) bh; | |
10753 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC); | |
10754 | myh->forced_local = 1; | |
10755 | eh->export_glue = myh; | |
10756 | th = record_arm_to_thumb_glue (info, h); | |
10757 | /* Point the symbol at the stub. */ | |
10758 | h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC); | |
10759 | h->root.u.def.section = th->root.u.def.section; | |
10760 | h->root.u.def.value = th->root.u.def.value & ~1; | |
10761 | } | |
10762 | ||
5e681ec4 PB |
10763 | if (eh->relocs_copied == NULL) |
10764 | return TRUE; | |
10765 | ||
10766 | /* In the shared -Bsymbolic case, discard space allocated for | |
10767 | dynamic pc-relative relocs against symbols which turn out to be | |
10768 | defined in regular objects. For the normal shared case, discard | |
10769 | space for pc-relative relocs that have become local due to symbol | |
10770 | visibility changes. */ | |
10771 | ||
67687978 | 10772 | if (info->shared || htab->root.is_relocatable_executable) |
5e681ec4 | 10773 | { |
7bdca076 | 10774 | /* The only relocs that use pc_count are R_ARM_REL32 and |
bb224fc3 MS |
10775 | R_ARM_REL32_NOI, which will appear on something like |
10776 | ".long foo - .". We want calls to protected symbols to resolve | |
10777 | directly to the function rather than going via the plt. If people | |
10778 | want function pointer comparisons to work as expected then they | |
10779 | should avoid writing assembly like ".long foo - .". */ | |
ba93b8ac DJ |
10780 | if (SYMBOL_CALLS_LOCAL (info, h)) |
10781 | { | |
10782 | struct elf32_arm_relocs_copied **pp; | |
10783 | ||
10784 | for (pp = &eh->relocs_copied; (p = *pp) != NULL; ) | |
10785 | { | |
10786 | p->count -= p->pc_count; | |
10787 | p->pc_count = 0; | |
10788 | if (p->count == 0) | |
10789 | *pp = p->next; | |
10790 | else | |
10791 | pp = &p->next; | |
10792 | } | |
10793 | } | |
10794 | ||
3348747a NS |
10795 | if (elf32_arm_hash_table (info)->vxworks_p) |
10796 | { | |
10797 | struct elf32_arm_relocs_copied **pp; | |
10798 | ||
10799 | for (pp = &eh->relocs_copied; (p = *pp) != NULL; ) | |
10800 | { | |
10801 | if (strcmp (p->section->output_section->name, ".tls_vars") == 0) | |
10802 | *pp = p->next; | |
10803 | else | |
10804 | pp = &p->next; | |
10805 | } | |
10806 | } | |
10807 | ||
ba93b8ac | 10808 | /* Also discard relocs on undefined weak syms with non-default |
7359ea65 | 10809 | visibility. */ |
22d606e9 | 10810 | if (eh->relocs_copied != NULL |
5e681ec4 | 10811 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 AM |
10812 | { |
10813 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
10814 | eh->relocs_copied = NULL; | |
10815 | ||
10816 | /* Make sure undefined weak symbols are output as a dynamic | |
10817 | symbol in PIEs. */ | |
10818 | else if (h->dynindx == -1 | |
10819 | && !h->forced_local) | |
10820 | { | |
10821 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
10822 | return FALSE; | |
10823 | } | |
10824 | } | |
10825 | ||
67687978 PB |
10826 | else if (htab->root.is_relocatable_executable && h->dynindx == -1 |
10827 | && h->root.type == bfd_link_hash_new) | |
10828 | { | |
10829 | /* Output absolute symbols so that we can create relocations | |
10830 | against them. For normal symbols we output a relocation | |
10831 | against the section that contains them. */ | |
10832 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
10833 | return FALSE; | |
10834 | } | |
10835 | ||
5e681ec4 PB |
10836 | } |
10837 | else | |
10838 | { | |
10839 | /* For the non-shared case, discard space for relocs against | |
10840 | symbols which turn out to need copy relocs or are not | |
10841 | dynamic. */ | |
10842 | ||
f5385ebf AM |
10843 | if (!h->non_got_ref |
10844 | && ((h->def_dynamic | |
10845 | && !h->def_regular) | |
5e681ec4 PB |
10846 | || (htab->root.dynamic_sections_created |
10847 | && (h->root.type == bfd_link_hash_undefweak | |
10848 | || h->root.type == bfd_link_hash_undefined)))) | |
10849 | { | |
10850 | /* Make sure this symbol is output as a dynamic symbol. | |
10851 | Undefined weak syms won't yet be marked as dynamic. */ | |
10852 | if (h->dynindx == -1 | |
f5385ebf | 10853 | && !h->forced_local) |
5e681ec4 | 10854 | { |
c152c796 | 10855 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
10856 | return FALSE; |
10857 | } | |
10858 | ||
10859 | /* If that succeeded, we know we'll be keeping all the | |
10860 | relocs. */ | |
10861 | if (h->dynindx != -1) | |
10862 | goto keep; | |
10863 | } | |
10864 | ||
10865 | eh->relocs_copied = NULL; | |
10866 | ||
10867 | keep: ; | |
10868 | } | |
10869 | ||
10870 | /* Finally, allocate space. */ | |
10871 | for (p = eh->relocs_copied; p != NULL; p = p->next) | |
10872 | { | |
10873 | asection *sreloc = elf_section_data (p->section)->sreloc; | |
00a97672 | 10874 | sreloc->size += p->count * RELOC_SIZE (htab); |
5e681ec4 PB |
10875 | } |
10876 | ||
10877 | return TRUE; | |
10878 | } | |
10879 | ||
08d1f311 DJ |
10880 | /* Find any dynamic relocs that apply to read-only sections. */ |
10881 | ||
10882 | static bfd_boolean | |
8029a119 | 10883 | elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry * h, void * inf) |
08d1f311 | 10884 | { |
8029a119 NC |
10885 | struct elf32_arm_link_hash_entry * eh; |
10886 | struct elf32_arm_relocs_copied * p; | |
08d1f311 DJ |
10887 | |
10888 | if (h->root.type == bfd_link_hash_warning) | |
10889 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
10890 | ||
10891 | eh = (struct elf32_arm_link_hash_entry *) h; | |
10892 | for (p = eh->relocs_copied; p != NULL; p = p->next) | |
10893 | { | |
10894 | asection *s = p->section; | |
10895 | ||
10896 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
10897 | { | |
10898 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
10899 | ||
10900 | info->flags |= DF_TEXTREL; | |
10901 | ||
10902 | /* Not an error, just cut short the traversal. */ | |
10903 | return FALSE; | |
10904 | } | |
10905 | } | |
10906 | return TRUE; | |
10907 | } | |
10908 | ||
d504ffc8 DJ |
10909 | void |
10910 | bfd_elf32_arm_set_byteswap_code (struct bfd_link_info *info, | |
10911 | int byteswap_code) | |
10912 | { | |
10913 | struct elf32_arm_link_hash_table *globals; | |
10914 | ||
10915 | globals = elf32_arm_hash_table (info); | |
10916 | globals->byteswap_code = byteswap_code; | |
10917 | } | |
10918 | ||
252b5132 RH |
10919 | /* Set the sizes of the dynamic sections. */ |
10920 | ||
b34976b6 | 10921 | static bfd_boolean |
57e8b36a NC |
10922 | elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED, |
10923 | struct bfd_link_info * info) | |
252b5132 RH |
10924 | { |
10925 | bfd * dynobj; | |
10926 | asection * s; | |
b34976b6 AM |
10927 | bfd_boolean plt; |
10928 | bfd_boolean relocs; | |
5e681ec4 PB |
10929 | bfd *ibfd; |
10930 | struct elf32_arm_link_hash_table *htab; | |
252b5132 | 10931 | |
5e681ec4 | 10932 | htab = elf32_arm_hash_table (info); |
252b5132 RH |
10933 | dynobj = elf_hash_table (info)->dynobj; |
10934 | BFD_ASSERT (dynobj != NULL); | |
39b41c9c | 10935 | check_use_blx (htab); |
252b5132 RH |
10936 | |
10937 | if (elf_hash_table (info)->dynamic_sections_created) | |
10938 | { | |
10939 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 10940 | if (info->executable) |
252b5132 RH |
10941 | { |
10942 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
10943 | BFD_ASSERT (s != NULL); | |
eea6121a | 10944 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
252b5132 RH |
10945 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
10946 | } | |
10947 | } | |
5e681ec4 PB |
10948 | |
10949 | /* Set up .got offsets for local syms, and space for local dynamic | |
10950 | relocs. */ | |
10951 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
252b5132 | 10952 | { |
5e681ec4 PB |
10953 | bfd_signed_vma *local_got; |
10954 | bfd_signed_vma *end_local_got; | |
10955 | char *local_tls_type; | |
10956 | bfd_size_type locsymcount; | |
10957 | Elf_Internal_Shdr *symtab_hdr; | |
10958 | asection *srel; | |
3348747a | 10959 | bfd_boolean is_vxworks = elf32_arm_hash_table (info)->vxworks_p; |
5e681ec4 | 10960 | |
0ffa91dd | 10961 | if (! is_arm_elf (ibfd)) |
5e681ec4 PB |
10962 | continue; |
10963 | ||
10964 | for (s = ibfd->sections; s != NULL; s = s->next) | |
10965 | { | |
10966 | struct elf32_arm_relocs_copied *p; | |
10967 | ||
6edfbbad | 10968 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
5e681ec4 PB |
10969 | { |
10970 | if (!bfd_is_abs_section (p->section) | |
10971 | && bfd_is_abs_section (p->section->output_section)) | |
10972 | { | |
10973 | /* Input section has been discarded, either because | |
10974 | it is a copy of a linkonce section or due to | |
10975 | linker script /DISCARD/, so we'll be discarding | |
10976 | the relocs too. */ | |
10977 | } | |
3348747a NS |
10978 | else if (is_vxworks |
10979 | && strcmp (p->section->output_section->name, | |
10980 | ".tls_vars") == 0) | |
10981 | { | |
10982 | /* Relocations in vxworks .tls_vars sections are | |
10983 | handled specially by the loader. */ | |
10984 | } | |
5e681ec4 PB |
10985 | else if (p->count != 0) |
10986 | { | |
10987 | srel = elf_section_data (p->section)->sreloc; | |
00a97672 | 10988 | srel->size += p->count * RELOC_SIZE (htab); |
5e681ec4 PB |
10989 | if ((p->section->output_section->flags & SEC_READONLY) != 0) |
10990 | info->flags |= DF_TEXTREL; | |
10991 | } | |
10992 | } | |
10993 | } | |
10994 | ||
10995 | local_got = elf_local_got_refcounts (ibfd); | |
10996 | if (!local_got) | |
10997 | continue; | |
10998 | ||
0ffa91dd | 10999 | symtab_hdr = & elf_symtab_hdr (ibfd); |
5e681ec4 PB |
11000 | locsymcount = symtab_hdr->sh_info; |
11001 | end_local_got = local_got + locsymcount; | |
ba93b8ac | 11002 | local_tls_type = elf32_arm_local_got_tls_type (ibfd); |
5e681ec4 PB |
11003 | s = htab->sgot; |
11004 | srel = htab->srelgot; | |
11005 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) | |
11006 | { | |
11007 | if (*local_got > 0) | |
11008 | { | |
eea6121a | 11009 | *local_got = s->size; |
ba93b8ac DJ |
11010 | if (*local_tls_type & GOT_TLS_GD) |
11011 | /* TLS_GD relocs need an 8-byte structure in the GOT. */ | |
11012 | s->size += 8; | |
11013 | if (*local_tls_type & GOT_TLS_IE) | |
11014 | s->size += 4; | |
11015 | if (*local_tls_type == GOT_NORMAL) | |
11016 | s->size += 4; | |
11017 | ||
11018 | if (info->shared || *local_tls_type == GOT_TLS_GD) | |
00a97672 | 11019 | srel->size += RELOC_SIZE (htab); |
5e681ec4 PB |
11020 | } |
11021 | else | |
11022 | *local_got = (bfd_vma) -1; | |
11023 | } | |
252b5132 RH |
11024 | } |
11025 | ||
ba93b8ac DJ |
11026 | if (htab->tls_ldm_got.refcount > 0) |
11027 | { | |
11028 | /* Allocate two GOT entries and one dynamic relocation (if necessary) | |
11029 | for R_ARM_TLS_LDM32 relocations. */ | |
11030 | htab->tls_ldm_got.offset = htab->sgot->size; | |
11031 | htab->sgot->size += 8; | |
11032 | if (info->shared) | |
00a97672 | 11033 | htab->srelgot->size += RELOC_SIZE (htab); |
ba93b8ac DJ |
11034 | } |
11035 | else | |
11036 | htab->tls_ldm_got.offset = -1; | |
11037 | ||
5e681ec4 PB |
11038 | /* Allocate global sym .plt and .got entries, and space for global |
11039 | sym dynamic relocs. */ | |
57e8b36a | 11040 | elf_link_hash_traverse (& htab->root, allocate_dynrelocs, info); |
252b5132 | 11041 | |
d504ffc8 DJ |
11042 | /* Here we rummage through the found bfds to collect glue information. */ |
11043 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
c7b8f16e | 11044 | { |
0ffa91dd | 11045 | if (! is_arm_elf (ibfd)) |
e44a2c9c AM |
11046 | continue; |
11047 | ||
c7b8f16e JB |
11048 | /* Initialise mapping tables for code/data. */ |
11049 | bfd_elf32_arm_init_maps (ibfd); | |
906e58ca | 11050 | |
c7b8f16e JB |
11051 | if (!bfd_elf32_arm_process_before_allocation (ibfd, info) |
11052 | || !bfd_elf32_arm_vfp11_erratum_scan (ibfd, info)) | |
11053 | /* xgettext:c-format */ | |
11054 | _bfd_error_handler (_("Errors encountered processing file %s"), | |
11055 | ibfd->filename); | |
11056 | } | |
d504ffc8 | 11057 | |
3e6b1042 DJ |
11058 | /* Allocate space for the glue sections now that we've sized them. */ |
11059 | bfd_elf32_arm_allocate_interworking_sections (info); | |
11060 | ||
252b5132 RH |
11061 | /* The check_relocs and adjust_dynamic_symbol entry points have |
11062 | determined the sizes of the various dynamic sections. Allocate | |
11063 | memory for them. */ | |
b34976b6 AM |
11064 | plt = FALSE; |
11065 | relocs = FALSE; | |
252b5132 RH |
11066 | for (s = dynobj->sections; s != NULL; s = s->next) |
11067 | { | |
11068 | const char * name; | |
252b5132 RH |
11069 | |
11070 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
11071 | continue; | |
11072 | ||
11073 | /* It's OK to base decisions on the section name, because none | |
11074 | of the dynobj section names depend upon the input files. */ | |
11075 | name = bfd_get_section_name (dynobj, s); | |
11076 | ||
24a1ba0f | 11077 | if (strcmp (name, ".plt") == 0) |
252b5132 | 11078 | { |
c456f082 AM |
11079 | /* Remember whether there is a PLT. */ |
11080 | plt = s->size != 0; | |
252b5132 | 11081 | } |
0112cd26 | 11082 | else if (CONST_STRNEQ (name, ".rel")) |
252b5132 | 11083 | { |
c456f082 | 11084 | if (s->size != 0) |
252b5132 | 11085 | { |
252b5132 | 11086 | /* Remember whether there are any reloc sections other |
00a97672 RS |
11087 | than .rel(a).plt and .rela.plt.unloaded. */ |
11088 | if (s != htab->srelplt && s != htab->srelplt2) | |
b34976b6 | 11089 | relocs = TRUE; |
252b5132 RH |
11090 | |
11091 | /* We use the reloc_count field as a counter if we need | |
11092 | to copy relocs into the output file. */ | |
11093 | s->reloc_count = 0; | |
11094 | } | |
11095 | } | |
0112cd26 | 11096 | else if (! CONST_STRNEQ (name, ".got") |
c456f082 | 11097 | && strcmp (name, ".dynbss") != 0) |
252b5132 RH |
11098 | { |
11099 | /* It's not one of our sections, so don't allocate space. */ | |
11100 | continue; | |
11101 | } | |
11102 | ||
c456f082 | 11103 | if (s->size == 0) |
252b5132 | 11104 | { |
c456f082 | 11105 | /* If we don't need this section, strip it from the |
00a97672 RS |
11106 | output file. This is mostly to handle .rel(a).bss and |
11107 | .rel(a).plt. We must create both sections in | |
c456f082 AM |
11108 | create_dynamic_sections, because they must be created |
11109 | before the linker maps input sections to output | |
11110 | sections. The linker does that before | |
11111 | adjust_dynamic_symbol is called, and it is that | |
11112 | function which decides whether anything needs to go | |
11113 | into these sections. */ | |
8423293d | 11114 | s->flags |= SEC_EXCLUDE; |
252b5132 RH |
11115 | continue; |
11116 | } | |
11117 | ||
c456f082 AM |
11118 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
11119 | continue; | |
11120 | ||
252b5132 | 11121 | /* Allocate memory for the section contents. */ |
906e58ca | 11122 | s->contents = bfd_zalloc (dynobj, s->size); |
c456f082 | 11123 | if (s->contents == NULL) |
b34976b6 | 11124 | return FALSE; |
252b5132 RH |
11125 | } |
11126 | ||
11127 | if (elf_hash_table (info)->dynamic_sections_created) | |
11128 | { | |
11129 | /* Add some entries to the .dynamic section. We fill in the | |
11130 | values later, in elf32_arm_finish_dynamic_sections, but we | |
11131 | must add the entries now so that we get the correct size for | |
11132 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
11133 | dynamic linker and used by the debugger. */ | |
dc810e39 | 11134 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 11135 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 11136 | |
8532796c | 11137 | if (info->executable) |
252b5132 | 11138 | { |
dc810e39 | 11139 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 11140 | return FALSE; |
252b5132 RH |
11141 | } |
11142 | ||
11143 | if (plt) | |
11144 | { | |
dc810e39 AM |
11145 | if ( !add_dynamic_entry (DT_PLTGOT, 0) |
11146 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
00a97672 RS |
11147 | || !add_dynamic_entry (DT_PLTREL, |
11148 | htab->use_rel ? DT_REL : DT_RELA) | |
dc810e39 | 11149 | || !add_dynamic_entry (DT_JMPREL, 0)) |
b34976b6 | 11150 | return FALSE; |
252b5132 RH |
11151 | } |
11152 | ||
11153 | if (relocs) | |
11154 | { | |
00a97672 RS |
11155 | if (htab->use_rel) |
11156 | { | |
11157 | if (!add_dynamic_entry (DT_REL, 0) | |
11158 | || !add_dynamic_entry (DT_RELSZ, 0) | |
11159 | || !add_dynamic_entry (DT_RELENT, RELOC_SIZE (htab))) | |
11160 | return FALSE; | |
11161 | } | |
11162 | else | |
11163 | { | |
11164 | if (!add_dynamic_entry (DT_RELA, 0) | |
11165 | || !add_dynamic_entry (DT_RELASZ, 0) | |
11166 | || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab))) | |
11167 | return FALSE; | |
11168 | } | |
252b5132 RH |
11169 | } |
11170 | ||
08d1f311 DJ |
11171 | /* If any dynamic relocs apply to a read-only section, |
11172 | then we need a DT_TEXTREL entry. */ | |
11173 | if ((info->flags & DF_TEXTREL) == 0) | |
8029a119 NC |
11174 | elf_link_hash_traverse (& htab->root, elf32_arm_readonly_dynrelocs, |
11175 | info); | |
08d1f311 | 11176 | |
99e4ae17 | 11177 | if ((info->flags & DF_TEXTREL) != 0) |
252b5132 | 11178 | { |
dc810e39 | 11179 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 11180 | return FALSE; |
252b5132 | 11181 | } |
7a2b07ff NS |
11182 | if (htab->vxworks_p |
11183 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) | |
11184 | return FALSE; | |
252b5132 | 11185 | } |
8532796c | 11186 | #undef add_dynamic_entry |
252b5132 | 11187 | |
b34976b6 | 11188 | return TRUE; |
252b5132 RH |
11189 | } |
11190 | ||
252b5132 RH |
11191 | /* Finish up dynamic symbol handling. We set the contents of various |
11192 | dynamic sections here. */ | |
11193 | ||
b34976b6 | 11194 | static bfd_boolean |
906e58ca NC |
11195 | elf32_arm_finish_dynamic_symbol (bfd * output_bfd, |
11196 | struct bfd_link_info * info, | |
11197 | struct elf_link_hash_entry * h, | |
11198 | Elf_Internal_Sym * sym) | |
252b5132 RH |
11199 | { |
11200 | bfd * dynobj; | |
e5a52504 | 11201 | struct elf32_arm_link_hash_table *htab; |
b7693d02 | 11202 | struct elf32_arm_link_hash_entry *eh; |
252b5132 RH |
11203 | |
11204 | dynobj = elf_hash_table (info)->dynobj; | |
e5a52504 | 11205 | htab = elf32_arm_hash_table (info); |
b7693d02 | 11206 | eh = (struct elf32_arm_link_hash_entry *) h; |
252b5132 RH |
11207 | |
11208 | if (h->plt.offset != (bfd_vma) -1) | |
11209 | { | |
11210 | asection * splt; | |
252b5132 | 11211 | asection * srel; |
e5a52504 | 11212 | bfd_byte *loc; |
24a1ba0f | 11213 | bfd_vma plt_index; |
947216bf | 11214 | Elf_Internal_Rela rel; |
252b5132 RH |
11215 | |
11216 | /* This symbol has an entry in the procedure linkage table. Set | |
11217 | it up. */ | |
11218 | ||
11219 | BFD_ASSERT (h->dynindx != -1); | |
11220 | ||
11221 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
00a97672 | 11222 | srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".plt")); |
e5a52504 | 11223 | BFD_ASSERT (splt != NULL && srel != NULL); |
252b5132 | 11224 | |
e5a52504 MM |
11225 | /* Fill in the entry in the procedure linkage table. */ |
11226 | if (htab->symbian_p) | |
11227 | { | |
906e58ca | 11228 | put_arm_insn (htab, output_bfd, |
52ab56c2 PB |
11229 | elf32_arm_symbian_plt_entry[0], |
11230 | splt->contents + h->plt.offset); | |
906e58ca | 11231 | bfd_put_32 (output_bfd, |
52ab56c2 PB |
11232 | elf32_arm_symbian_plt_entry[1], |
11233 | splt->contents + h->plt.offset + 4); | |
906e58ca | 11234 | |
e5a52504 | 11235 | /* Fill in the entry in the .rel.plt section. */ |
2a1b9a48 MM |
11236 | rel.r_offset = (splt->output_section->vma |
11237 | + splt->output_offset | |
52ab56c2 | 11238 | + h->plt.offset + 4); |
e5a52504 | 11239 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT); |
b7693d02 DJ |
11240 | |
11241 | /* Get the index in the procedure linkage table which | |
11242 | corresponds to this symbol. This is the index of this symbol | |
11243 | in all the symbols for which we are making plt entries. The | |
11244 | first entry in the procedure linkage table is reserved. */ | |
906e58ca | 11245 | plt_index = ((h->plt.offset - htab->plt_header_size) |
b7693d02 | 11246 | / htab->plt_entry_size); |
e5a52504 MM |
11247 | } |
11248 | else | |
11249 | { | |
00a97672 | 11250 | bfd_vma got_offset, got_address, plt_address; |
e5a52504 MM |
11251 | bfd_vma got_displacement; |
11252 | asection * sgot; | |
52ab56c2 | 11253 | bfd_byte * ptr; |
906e58ca | 11254 | |
e5a52504 MM |
11255 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); |
11256 | BFD_ASSERT (sgot != NULL); | |
11257 | ||
b7693d02 DJ |
11258 | /* Get the offset into the .got.plt table of the entry that |
11259 | corresponds to this function. */ | |
11260 | got_offset = eh->plt_got_offset; | |
11261 | ||
11262 | /* Get the index in the procedure linkage table which | |
11263 | corresponds to this symbol. This is the index of this symbol | |
11264 | in all the symbols for which we are making plt entries. The | |
11265 | first three entries in .got.plt are reserved; after that | |
11266 | symbols appear in the same order as in .plt. */ | |
11267 | plt_index = (got_offset - 12) / 4; | |
e5a52504 | 11268 | |
00a97672 RS |
11269 | /* Calculate the address of the GOT entry. */ |
11270 | got_address = (sgot->output_section->vma | |
11271 | + sgot->output_offset | |
11272 | + got_offset); | |
5e681ec4 | 11273 | |
00a97672 RS |
11274 | /* ...and the address of the PLT entry. */ |
11275 | plt_address = (splt->output_section->vma | |
11276 | + splt->output_offset | |
11277 | + h->plt.offset); | |
5e681ec4 | 11278 | |
52ab56c2 | 11279 | ptr = htab->splt->contents + h->plt.offset; |
00a97672 RS |
11280 | if (htab->vxworks_p && info->shared) |
11281 | { | |
11282 | unsigned int i; | |
11283 | bfd_vma val; | |
11284 | ||
52ab56c2 | 11285 | for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4) |
00a97672 RS |
11286 | { |
11287 | val = elf32_arm_vxworks_shared_plt_entry[i]; | |
11288 | if (i == 2) | |
11289 | val |= got_address - sgot->output_section->vma; | |
11290 | if (i == 5) | |
11291 | val |= plt_index * RELOC_SIZE (htab); | |
52ab56c2 PB |
11292 | if (i == 2 || i == 5) |
11293 | bfd_put_32 (output_bfd, val, ptr); | |
11294 | else | |
11295 | put_arm_insn (htab, output_bfd, val, ptr); | |
00a97672 RS |
11296 | } |
11297 | } | |
11298 | else if (htab->vxworks_p) | |
b7693d02 | 11299 | { |
00a97672 RS |
11300 | unsigned int i; |
11301 | bfd_vma val; | |
11302 | ||
d3753b85 | 11303 | for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4) |
00a97672 RS |
11304 | { |
11305 | val = elf32_arm_vxworks_exec_plt_entry[i]; | |
11306 | if (i == 2) | |
11307 | val |= got_address; | |
11308 | if (i == 4) | |
11309 | val |= 0xffffff & -((h->plt.offset + i * 4 + 8) >> 2); | |
11310 | if (i == 5) | |
11311 | val |= plt_index * RELOC_SIZE (htab); | |
52ab56c2 PB |
11312 | if (i == 2 || i == 5) |
11313 | bfd_put_32 (output_bfd, val, ptr); | |
11314 | else | |
11315 | put_arm_insn (htab, output_bfd, val, ptr); | |
00a97672 RS |
11316 | } |
11317 | ||
11318 | loc = (htab->srelplt2->contents | |
11319 | + (plt_index * 2 + 1) * RELOC_SIZE (htab)); | |
11320 | ||
11321 | /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation | |
11322 | referencing the GOT for this PLT entry. */ | |
11323 | rel.r_offset = plt_address + 8; | |
11324 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); | |
11325 | rel.r_addend = got_offset; | |
11326 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
11327 | loc += RELOC_SIZE (htab); | |
11328 | ||
11329 | /* Create the R_ARM_ABS32 relocation referencing the | |
11330 | beginning of the PLT for this GOT entry. */ | |
11331 | rel.r_offset = got_address; | |
11332 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32); | |
11333 | rel.r_addend = 0; | |
11334 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
b7693d02 | 11335 | } |
00a97672 RS |
11336 | else |
11337 | { | |
bd97cb95 | 11338 | bfd_signed_vma thumb_refs; |
00a97672 RS |
11339 | /* Calculate the displacement between the PLT slot and the |
11340 | entry in the GOT. The eight-byte offset accounts for the | |
11341 | value produced by adding to pc in the first instruction | |
11342 | of the PLT stub. */ | |
11343 | got_displacement = got_address - (plt_address + 8); | |
b7693d02 | 11344 | |
00a97672 RS |
11345 | BFD_ASSERT ((got_displacement & 0xf0000000) == 0); |
11346 | ||
bd97cb95 DJ |
11347 | thumb_refs = eh->plt_thumb_refcount; |
11348 | if (!htab->use_blx) | |
11349 | thumb_refs += eh->plt_maybe_thumb_refcount; | |
11350 | ||
11351 | if (thumb_refs > 0) | |
00a97672 | 11352 | { |
52ab56c2 PB |
11353 | put_thumb_insn (htab, output_bfd, |
11354 | elf32_arm_plt_thumb_stub[0], ptr - 4); | |
11355 | put_thumb_insn (htab, output_bfd, | |
11356 | elf32_arm_plt_thumb_stub[1], ptr - 2); | |
00a97672 RS |
11357 | } |
11358 | ||
52ab56c2 PB |
11359 | put_arm_insn (htab, output_bfd, |
11360 | elf32_arm_plt_entry[0] | |
11361 | | ((got_displacement & 0x0ff00000) >> 20), | |
11362 | ptr + 0); | |
11363 | put_arm_insn (htab, output_bfd, | |
11364 | elf32_arm_plt_entry[1] | |
11365 | | ((got_displacement & 0x000ff000) >> 12), | |
11366 | ptr+ 4); | |
11367 | put_arm_insn (htab, output_bfd, | |
11368 | elf32_arm_plt_entry[2] | |
11369 | | (got_displacement & 0x00000fff), | |
11370 | ptr + 8); | |
5e681ec4 | 11371 | #ifdef FOUR_WORD_PLT |
52ab56c2 | 11372 | bfd_put_32 (output_bfd, elf32_arm_plt_entry[3], ptr + 12); |
5e681ec4 | 11373 | #endif |
00a97672 | 11374 | } |
252b5132 | 11375 | |
e5a52504 MM |
11376 | /* Fill in the entry in the global offset table. */ |
11377 | bfd_put_32 (output_bfd, | |
11378 | (splt->output_section->vma | |
11379 | + splt->output_offset), | |
11380 | sgot->contents + got_offset); | |
906e58ca | 11381 | |
00a97672 RS |
11382 | /* Fill in the entry in the .rel(a).plt section. */ |
11383 | rel.r_addend = 0; | |
11384 | rel.r_offset = got_address; | |
e5a52504 MM |
11385 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_JUMP_SLOT); |
11386 | } | |
57e8b36a | 11387 | |
00a97672 RS |
11388 | loc = srel->contents + plt_index * RELOC_SIZE (htab); |
11389 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
252b5132 | 11390 | |
f5385ebf | 11391 | if (!h->def_regular) |
252b5132 RH |
11392 | { |
11393 | /* Mark the symbol as undefined, rather than as defined in | |
11394 | the .plt section. Leave the value alone. */ | |
11395 | sym->st_shndx = SHN_UNDEF; | |
d982ba73 PB |
11396 | /* If the symbol is weak, we do need to clear the value. |
11397 | Otherwise, the PLT entry would provide a definition for | |
11398 | the symbol even if the symbol wasn't defined anywhere, | |
11399 | and so the symbol would never be NULL. */ | |
f5385ebf | 11400 | if (!h->ref_regular_nonweak) |
d982ba73 | 11401 | sym->st_value = 0; |
252b5132 RH |
11402 | } |
11403 | } | |
11404 | ||
ba93b8ac DJ |
11405 | if (h->got.offset != (bfd_vma) -1 |
11406 | && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_GD) == 0 | |
11407 | && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_IE) == 0) | |
252b5132 RH |
11408 | { |
11409 | asection * sgot; | |
11410 | asection * srel; | |
947216bf AM |
11411 | Elf_Internal_Rela rel; |
11412 | bfd_byte *loc; | |
00a97672 | 11413 | bfd_vma offset; |
252b5132 RH |
11414 | |
11415 | /* This symbol has an entry in the global offset table. Set it | |
11416 | up. */ | |
252b5132 | 11417 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
00a97672 | 11418 | srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".got")); |
252b5132 RH |
11419 | BFD_ASSERT (sgot != NULL && srel != NULL); |
11420 | ||
00a97672 RS |
11421 | offset = (h->got.offset & ~(bfd_vma) 1); |
11422 | rel.r_addend = 0; | |
252b5132 RH |
11423 | rel.r_offset = (sgot->output_section->vma |
11424 | + sgot->output_offset | |
00a97672 | 11425 | + offset); |
252b5132 | 11426 | |
5e681ec4 PB |
11427 | /* If this is a static link, or it is a -Bsymbolic link and the |
11428 | symbol is defined locally or was forced to be local because | |
11429 | of a version file, we just want to emit a RELATIVE reloc. | |
11430 | The entry in the global offset table will already have been | |
11431 | initialized in the relocate_section function. */ | |
252b5132 | 11432 | if (info->shared |
5e681ec4 PB |
11433 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
11434 | { | |
906e58ca | 11435 | BFD_ASSERT ((h->got.offset & 1) != 0); |
5e681ec4 | 11436 | rel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); |
00a97672 RS |
11437 | if (!htab->use_rel) |
11438 | { | |
11439 | rel.r_addend = bfd_get_32 (output_bfd, sgot->contents + offset); | |
11440 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset); | |
11441 | } | |
5e681ec4 | 11442 | } |
252b5132 RH |
11443 | else |
11444 | { | |
906e58ca | 11445 | BFD_ASSERT ((h->got.offset & 1) == 0); |
00a97672 | 11446 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset); |
252b5132 RH |
11447 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT); |
11448 | } | |
11449 | ||
00a97672 RS |
11450 | loc = srel->contents + srel->reloc_count++ * RELOC_SIZE (htab); |
11451 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
252b5132 RH |
11452 | } |
11453 | ||
f5385ebf | 11454 | if (h->needs_copy) |
252b5132 RH |
11455 | { |
11456 | asection * s; | |
947216bf AM |
11457 | Elf_Internal_Rela rel; |
11458 | bfd_byte *loc; | |
252b5132 RH |
11459 | |
11460 | /* This symbol needs a copy reloc. Set it up. */ | |
252b5132 RH |
11461 | BFD_ASSERT (h->dynindx != -1 |
11462 | && (h->root.type == bfd_link_hash_defined | |
11463 | || h->root.type == bfd_link_hash_defweak)); | |
11464 | ||
11465 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
00a97672 | 11466 | RELOC_SECTION (htab, ".bss")); |
252b5132 RH |
11467 | BFD_ASSERT (s != NULL); |
11468 | ||
00a97672 | 11469 | rel.r_addend = 0; |
252b5132 RH |
11470 | rel.r_offset = (h->root.u.def.value |
11471 | + h->root.u.def.section->output_section->vma | |
11472 | + h->root.u.def.section->output_offset); | |
11473 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY); | |
00a97672 RS |
11474 | loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab); |
11475 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
252b5132 RH |
11476 | } |
11477 | ||
00a97672 RS |
11478 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks, |
11479 | the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative | |
11480 | to the ".got" section. */ | |
252b5132 | 11481 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 |
00a97672 | 11482 | || (!htab->vxworks_p && h == htab->root.hgot)) |
252b5132 RH |
11483 | sym->st_shndx = SHN_ABS; |
11484 | ||
b34976b6 | 11485 | return TRUE; |
252b5132 RH |
11486 | } |
11487 | ||
11488 | /* Finish up the dynamic sections. */ | |
11489 | ||
b34976b6 | 11490 | static bfd_boolean |
57e8b36a | 11491 | elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info) |
252b5132 RH |
11492 | { |
11493 | bfd * dynobj; | |
11494 | asection * sgot; | |
11495 | asection * sdyn; | |
11496 | ||
11497 | dynobj = elf_hash_table (info)->dynobj; | |
11498 | ||
11499 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
229fcec5 | 11500 | BFD_ASSERT (elf32_arm_hash_table (info)->symbian_p || sgot != NULL); |
252b5132 RH |
11501 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
11502 | ||
11503 | if (elf_hash_table (info)->dynamic_sections_created) | |
11504 | { | |
11505 | asection *splt; | |
11506 | Elf32_External_Dyn *dyncon, *dynconend; | |
229fcec5 | 11507 | struct elf32_arm_link_hash_table *htab; |
252b5132 | 11508 | |
229fcec5 | 11509 | htab = elf32_arm_hash_table (info); |
252b5132 | 11510 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
24a1ba0f | 11511 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
252b5132 RH |
11512 | |
11513 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 11514 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
9b485d32 | 11515 | |
252b5132 RH |
11516 | for (; dyncon < dynconend; dyncon++) |
11517 | { | |
11518 | Elf_Internal_Dyn dyn; | |
11519 | const char * name; | |
11520 | asection * s; | |
11521 | ||
11522 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
11523 | ||
11524 | switch (dyn.d_tag) | |
11525 | { | |
229fcec5 MM |
11526 | unsigned int type; |
11527 | ||
252b5132 | 11528 | default: |
7a2b07ff NS |
11529 | if (htab->vxworks_p |
11530 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
11531 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
252b5132 RH |
11532 | break; |
11533 | ||
229fcec5 MM |
11534 | case DT_HASH: |
11535 | name = ".hash"; | |
11536 | goto get_vma_if_bpabi; | |
11537 | case DT_STRTAB: | |
11538 | name = ".dynstr"; | |
11539 | goto get_vma_if_bpabi; | |
11540 | case DT_SYMTAB: | |
11541 | name = ".dynsym"; | |
11542 | goto get_vma_if_bpabi; | |
c0042f5d MM |
11543 | case DT_VERSYM: |
11544 | name = ".gnu.version"; | |
11545 | goto get_vma_if_bpabi; | |
11546 | case DT_VERDEF: | |
11547 | name = ".gnu.version_d"; | |
11548 | goto get_vma_if_bpabi; | |
11549 | case DT_VERNEED: | |
11550 | name = ".gnu.version_r"; | |
11551 | goto get_vma_if_bpabi; | |
11552 | ||
252b5132 RH |
11553 | case DT_PLTGOT: |
11554 | name = ".got"; | |
11555 | goto get_vma; | |
11556 | case DT_JMPREL: | |
00a97672 | 11557 | name = RELOC_SECTION (htab, ".plt"); |
252b5132 RH |
11558 | get_vma: |
11559 | s = bfd_get_section_by_name (output_bfd, name); | |
11560 | BFD_ASSERT (s != NULL); | |
229fcec5 MM |
11561 | if (!htab->symbian_p) |
11562 | dyn.d_un.d_ptr = s->vma; | |
11563 | else | |
11564 | /* In the BPABI, tags in the PT_DYNAMIC section point | |
11565 | at the file offset, not the memory address, for the | |
11566 | convenience of the post linker. */ | |
11567 | dyn.d_un.d_ptr = s->filepos; | |
252b5132 RH |
11568 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
11569 | break; | |
11570 | ||
229fcec5 MM |
11571 | get_vma_if_bpabi: |
11572 | if (htab->symbian_p) | |
11573 | goto get_vma; | |
11574 | break; | |
11575 | ||
252b5132 | 11576 | case DT_PLTRELSZ: |
00a97672 RS |
11577 | s = bfd_get_section_by_name (output_bfd, |
11578 | RELOC_SECTION (htab, ".plt")); | |
252b5132 | 11579 | BFD_ASSERT (s != NULL); |
eea6121a | 11580 | dyn.d_un.d_val = s->size; |
252b5132 RH |
11581 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
11582 | break; | |
906e58ca | 11583 | |
252b5132 | 11584 | case DT_RELSZ: |
00a97672 | 11585 | case DT_RELASZ: |
229fcec5 MM |
11586 | if (!htab->symbian_p) |
11587 | { | |
11588 | /* My reading of the SVR4 ABI indicates that the | |
11589 | procedure linkage table relocs (DT_JMPREL) should be | |
11590 | included in the overall relocs (DT_REL). This is | |
11591 | what Solaris does. However, UnixWare can not handle | |
11592 | that case. Therefore, we override the DT_RELSZ entry | |
11593 | here to make it not include the JMPREL relocs. Since | |
00a97672 | 11594 | the linker script arranges for .rel(a).plt to follow all |
229fcec5 MM |
11595 | other relocation sections, we don't have to worry |
11596 | about changing the DT_REL entry. */ | |
00a97672 RS |
11597 | s = bfd_get_section_by_name (output_bfd, |
11598 | RELOC_SECTION (htab, ".plt")); | |
229fcec5 MM |
11599 | if (s != NULL) |
11600 | dyn.d_un.d_val -= s->size; | |
11601 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
11602 | break; | |
11603 | } | |
8029a119 | 11604 | /* Fall through. */ |
229fcec5 MM |
11605 | |
11606 | case DT_REL: | |
11607 | case DT_RELA: | |
229fcec5 MM |
11608 | /* In the BPABI, the DT_REL tag must point at the file |
11609 | offset, not the VMA, of the first relocation | |
11610 | section. So, we use code similar to that in | |
11611 | elflink.c, but do not check for SHF_ALLOC on the | |
11612 | relcoation section, since relocations sections are | |
11613 | never allocated under the BPABI. The comments above | |
11614 | about Unixware notwithstanding, we include all of the | |
11615 | relocations here. */ | |
11616 | if (htab->symbian_p) | |
11617 | { | |
11618 | unsigned int i; | |
11619 | type = ((dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ) | |
11620 | ? SHT_REL : SHT_RELA); | |
11621 | dyn.d_un.d_val = 0; | |
11622 | for (i = 1; i < elf_numsections (output_bfd); i++) | |
11623 | { | |
906e58ca | 11624 | Elf_Internal_Shdr *hdr |
229fcec5 MM |
11625 | = elf_elfsections (output_bfd)[i]; |
11626 | if (hdr->sh_type == type) | |
11627 | { | |
906e58ca | 11628 | if (dyn.d_tag == DT_RELSZ |
229fcec5 MM |
11629 | || dyn.d_tag == DT_RELASZ) |
11630 | dyn.d_un.d_val += hdr->sh_size; | |
de52dba4 AM |
11631 | else if ((ufile_ptr) hdr->sh_offset |
11632 | <= dyn.d_un.d_val - 1) | |
229fcec5 MM |
11633 | dyn.d_un.d_val = hdr->sh_offset; |
11634 | } | |
11635 | } | |
11636 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
11637 | } | |
252b5132 | 11638 | break; |
88f7bcd5 NC |
11639 | |
11640 | /* Set the bottom bit of DT_INIT/FINI if the | |
11641 | corresponding function is Thumb. */ | |
11642 | case DT_INIT: | |
11643 | name = info->init_function; | |
11644 | goto get_sym; | |
11645 | case DT_FINI: | |
11646 | name = info->fini_function; | |
11647 | get_sym: | |
11648 | /* If it wasn't set by elf_bfd_final_link | |
4cc11e76 | 11649 | then there is nothing to adjust. */ |
88f7bcd5 NC |
11650 | if (dyn.d_un.d_val != 0) |
11651 | { | |
11652 | struct elf_link_hash_entry * eh; | |
11653 | ||
11654 | eh = elf_link_hash_lookup (elf_hash_table (info), name, | |
b34976b6 | 11655 | FALSE, FALSE, TRUE); |
906e58ca | 11656 | if (eh != NULL |
88f7bcd5 NC |
11657 | && ELF_ST_TYPE (eh->type) == STT_ARM_TFUNC) |
11658 | { | |
11659 | dyn.d_un.d_val |= 1; | |
b34976b6 | 11660 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
88f7bcd5 NC |
11661 | } |
11662 | } | |
11663 | break; | |
252b5132 RH |
11664 | } |
11665 | } | |
11666 | ||
24a1ba0f | 11667 | /* Fill in the first entry in the procedure linkage table. */ |
e5a52504 | 11668 | if (splt->size > 0 && elf32_arm_hash_table (info)->plt_header_size) |
f7a74f8c | 11669 | { |
00a97672 RS |
11670 | const bfd_vma *plt0_entry; |
11671 | bfd_vma got_address, plt_address, got_displacement; | |
11672 | ||
11673 | /* Calculate the addresses of the GOT and PLT. */ | |
11674 | got_address = sgot->output_section->vma + sgot->output_offset; | |
11675 | plt_address = splt->output_section->vma + splt->output_offset; | |
11676 | ||
11677 | if (htab->vxworks_p) | |
11678 | { | |
11679 | /* The VxWorks GOT is relocated by the dynamic linker. | |
11680 | Therefore, we must emit relocations rather than simply | |
11681 | computing the values now. */ | |
11682 | Elf_Internal_Rela rel; | |
11683 | ||
11684 | plt0_entry = elf32_arm_vxworks_exec_plt0_entry; | |
52ab56c2 PB |
11685 | put_arm_insn (htab, output_bfd, plt0_entry[0], |
11686 | splt->contents + 0); | |
11687 | put_arm_insn (htab, output_bfd, plt0_entry[1], | |
11688 | splt->contents + 4); | |
11689 | put_arm_insn (htab, output_bfd, plt0_entry[2], | |
11690 | splt->contents + 8); | |
00a97672 RS |
11691 | bfd_put_32 (output_bfd, got_address, splt->contents + 12); |
11692 | ||
8029a119 | 11693 | /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */ |
00a97672 RS |
11694 | rel.r_offset = plt_address + 12; |
11695 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); | |
11696 | rel.r_addend = 0; | |
11697 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, | |
11698 | htab->srelplt2->contents); | |
11699 | } | |
11700 | else | |
11701 | { | |
11702 | got_displacement = got_address - (plt_address + 16); | |
11703 | ||
11704 | plt0_entry = elf32_arm_plt0_entry; | |
52ab56c2 PB |
11705 | put_arm_insn (htab, output_bfd, plt0_entry[0], |
11706 | splt->contents + 0); | |
11707 | put_arm_insn (htab, output_bfd, plt0_entry[1], | |
11708 | splt->contents + 4); | |
11709 | put_arm_insn (htab, output_bfd, plt0_entry[2], | |
11710 | splt->contents + 8); | |
11711 | put_arm_insn (htab, output_bfd, plt0_entry[3], | |
11712 | splt->contents + 12); | |
5e681ec4 | 11713 | |
5e681ec4 | 11714 | #ifdef FOUR_WORD_PLT |
00a97672 RS |
11715 | /* The displacement value goes in the otherwise-unused |
11716 | last word of the second entry. */ | |
11717 | bfd_put_32 (output_bfd, got_displacement, splt->contents + 28); | |
5e681ec4 | 11718 | #else |
00a97672 | 11719 | bfd_put_32 (output_bfd, got_displacement, splt->contents + 16); |
5e681ec4 | 11720 | #endif |
00a97672 | 11721 | } |
f7a74f8c | 11722 | } |
252b5132 RH |
11723 | |
11724 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
11725 | really seem like the right value. */ | |
74541ad4 AM |
11726 | if (splt->output_section->owner == output_bfd) |
11727 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; | |
00a97672 RS |
11728 | |
11729 | if (htab->vxworks_p && !info->shared && htab->splt->size > 0) | |
11730 | { | |
11731 | /* Correct the .rel(a).plt.unloaded relocations. They will have | |
11732 | incorrect symbol indexes. */ | |
11733 | int num_plts; | |
eed62c48 | 11734 | unsigned char *p; |
00a97672 RS |
11735 | |
11736 | num_plts = ((htab->splt->size - htab->plt_header_size) | |
11737 | / htab->plt_entry_size); | |
11738 | p = htab->srelplt2->contents + RELOC_SIZE (htab); | |
11739 | ||
11740 | for (; num_plts; num_plts--) | |
11741 | { | |
11742 | Elf_Internal_Rela rel; | |
11743 | ||
11744 | SWAP_RELOC_IN (htab) (output_bfd, p, &rel); | |
11745 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); | |
11746 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, p); | |
11747 | p += RELOC_SIZE (htab); | |
11748 | ||
11749 | SWAP_RELOC_IN (htab) (output_bfd, p, &rel); | |
11750 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32); | |
11751 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, p); | |
11752 | p += RELOC_SIZE (htab); | |
11753 | } | |
11754 | } | |
252b5132 RH |
11755 | } |
11756 | ||
11757 | /* Fill in the first three entries in the global offset table. */ | |
229fcec5 | 11758 | if (sgot) |
252b5132 | 11759 | { |
229fcec5 MM |
11760 | if (sgot->size > 0) |
11761 | { | |
11762 | if (sdyn == NULL) | |
11763 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
11764 | else | |
11765 | bfd_put_32 (output_bfd, | |
11766 | sdyn->output_section->vma + sdyn->output_offset, | |
11767 | sgot->contents); | |
11768 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
11769 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
11770 | } | |
252b5132 | 11771 | |
229fcec5 MM |
11772 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; |
11773 | } | |
252b5132 | 11774 | |
b34976b6 | 11775 | return TRUE; |
252b5132 RH |
11776 | } |
11777 | ||
ba96a88f | 11778 | static void |
57e8b36a | 11779 | elf32_arm_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED) |
ba96a88f | 11780 | { |
9b485d32 | 11781 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ |
e489d0ae | 11782 | struct elf32_arm_link_hash_table *globals; |
ba96a88f NC |
11783 | |
11784 | i_ehdrp = elf_elfheader (abfd); | |
11785 | ||
94a3258f PB |
11786 | if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_UNKNOWN) |
11787 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_ARM; | |
11788 | else | |
11789 | i_ehdrp->e_ident[EI_OSABI] = 0; | |
ba96a88f | 11790 | i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION; |
e489d0ae | 11791 | |
93204d3a PB |
11792 | if (link_info) |
11793 | { | |
11794 | globals = elf32_arm_hash_table (link_info); | |
11795 | if (globals->byteswap_code) | |
11796 | i_ehdrp->e_flags |= EF_ARM_BE8; | |
11797 | } | |
ba96a88f NC |
11798 | } |
11799 | ||
99e4ae17 | 11800 | static enum elf_reloc_type_class |
57e8b36a | 11801 | elf32_arm_reloc_type_class (const Elf_Internal_Rela *rela) |
99e4ae17 | 11802 | { |
f51e552e | 11803 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
99e4ae17 AJ |
11804 | { |
11805 | case R_ARM_RELATIVE: | |
11806 | return reloc_class_relative; | |
11807 | case R_ARM_JUMP_SLOT: | |
11808 | return reloc_class_plt; | |
11809 | case R_ARM_COPY: | |
11810 | return reloc_class_copy; | |
11811 | default: | |
11812 | return reloc_class_normal; | |
11813 | } | |
11814 | } | |
11815 | ||
e16bb312 NC |
11816 | /* Set the right machine number for an Arm ELF file. */ |
11817 | ||
11818 | static bfd_boolean | |
57e8b36a | 11819 | elf32_arm_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr) |
e16bb312 NC |
11820 | { |
11821 | if (hdr->sh_type == SHT_NOTE) | |
11822 | *flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
11823 | ||
11824 | return TRUE; | |
11825 | } | |
11826 | ||
e489d0ae | 11827 | static void |
57e8b36a | 11828 | elf32_arm_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) |
e16bb312 | 11829 | { |
5a6c6817 | 11830 | bfd_arm_update_notes (abfd, ARM_NOTE_SECTION); |
e16bb312 NC |
11831 | } |
11832 | ||
40a18ebd NC |
11833 | /* Return TRUE if this is an unwinding table entry. */ |
11834 | ||
11835 | static bfd_boolean | |
11836 | is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name) | |
11837 | { | |
0112cd26 NC |
11838 | return (CONST_STRNEQ (name, ELF_STRING_ARM_unwind) |
11839 | || CONST_STRNEQ (name, ELF_STRING_ARM_unwind_once)); | |
40a18ebd NC |
11840 | } |
11841 | ||
11842 | ||
11843 | /* Set the type and flags for an ARM section. We do this by | |
11844 | the section name, which is a hack, but ought to work. */ | |
11845 | ||
11846 | static bfd_boolean | |
11847 | elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec) | |
11848 | { | |
11849 | const char * name; | |
11850 | ||
11851 | name = bfd_get_section_name (abfd, sec); | |
11852 | ||
11853 | if (is_arm_elf_unwind_section_name (abfd, name)) | |
11854 | { | |
11855 | hdr->sh_type = SHT_ARM_EXIDX; | |
11856 | hdr->sh_flags |= SHF_LINK_ORDER; | |
11857 | } | |
11858 | return TRUE; | |
11859 | } | |
11860 | ||
6dc132d9 L |
11861 | /* Handle an ARM specific section when reading an object file. This is |
11862 | called when bfd_section_from_shdr finds a section with an unknown | |
11863 | type. */ | |
40a18ebd NC |
11864 | |
11865 | static bfd_boolean | |
11866 | elf32_arm_section_from_shdr (bfd *abfd, | |
11867 | Elf_Internal_Shdr * hdr, | |
6dc132d9 L |
11868 | const char *name, |
11869 | int shindex) | |
40a18ebd NC |
11870 | { |
11871 | /* There ought to be a place to keep ELF backend specific flags, but | |
11872 | at the moment there isn't one. We just keep track of the | |
11873 | sections by their name, instead. Fortunately, the ABI gives | |
11874 | names for all the ARM specific sections, so we will probably get | |
11875 | away with this. */ | |
11876 | switch (hdr->sh_type) | |
11877 | { | |
11878 | case SHT_ARM_EXIDX: | |
0951f019 RE |
11879 | case SHT_ARM_PREEMPTMAP: |
11880 | case SHT_ARM_ATTRIBUTES: | |
40a18ebd NC |
11881 | break; |
11882 | ||
11883 | default: | |
11884 | return FALSE; | |
11885 | } | |
11886 | ||
6dc132d9 | 11887 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
40a18ebd NC |
11888 | return FALSE; |
11889 | ||
11890 | return TRUE; | |
11891 | } | |
e489d0ae | 11892 | |
8e3de13a NC |
11893 | /* A structure used to record a list of sections, independently |
11894 | of the next and prev fields in the asection structure. */ | |
11895 | typedef struct section_list | |
11896 | { | |
11897 | asection * sec; | |
11898 | struct section_list * next; | |
11899 | struct section_list * prev; | |
11900 | } | |
11901 | section_list; | |
11902 | ||
11903 | /* Unfortunately we need to keep a list of sections for which | |
11904 | an _arm_elf_section_data structure has been allocated. This | |
11905 | is because it is possible for functions like elf32_arm_write_section | |
11906 | to be called on a section which has had an elf_data_structure | |
11907 | allocated for it (and so the used_by_bfd field is valid) but | |
11908 | for which the ARM extended version of this structure - the | |
11909 | _arm_elf_section_data structure - has not been allocated. */ | |
11910 | static section_list * sections_with_arm_elf_section_data = NULL; | |
11911 | ||
11912 | static void | |
957c6e41 | 11913 | record_section_with_arm_elf_section_data (asection * sec) |
8e3de13a NC |
11914 | { |
11915 | struct section_list * entry; | |
11916 | ||
957c6e41 | 11917 | entry = bfd_malloc (sizeof (* entry)); |
8e3de13a NC |
11918 | if (entry == NULL) |
11919 | return; | |
11920 | entry->sec = sec; | |
11921 | entry->next = sections_with_arm_elf_section_data; | |
11922 | entry->prev = NULL; | |
11923 | if (entry->next != NULL) | |
11924 | entry->next->prev = entry; | |
11925 | sections_with_arm_elf_section_data = entry; | |
11926 | } | |
11927 | ||
44444f50 NC |
11928 | static struct section_list * |
11929 | find_arm_elf_section_entry (asection * sec) | |
8e3de13a NC |
11930 | { |
11931 | struct section_list * entry; | |
bd4aae00 | 11932 | static struct section_list * last_entry = NULL; |
8e3de13a | 11933 | |
bd4aae00 NC |
11934 | /* This is a short cut for the typical case where the sections are added |
11935 | to the sections_with_arm_elf_section_data list in forward order and | |
11936 | then looked up here in backwards order. This makes a real difference | |
11937 | to the ld-srec/sec64k.exp linker test. */ | |
44444f50 | 11938 | entry = sections_with_arm_elf_section_data; |
bd4aae00 NC |
11939 | if (last_entry != NULL) |
11940 | { | |
11941 | if (last_entry->sec == sec) | |
44444f50 NC |
11942 | entry = last_entry; |
11943 | else if (last_entry->next != NULL | |
11944 | && last_entry->next->sec == sec) | |
11945 | entry = last_entry->next; | |
bd4aae00 | 11946 | } |
44444f50 NC |
11947 | |
11948 | for (; entry; entry = entry->next) | |
8e3de13a | 11949 | if (entry->sec == sec) |
44444f50 | 11950 | break; |
bd4aae00 | 11951 | |
44444f50 NC |
11952 | if (entry) |
11953 | /* Record the entry prior to this one - it is the entry we are most | |
11954 | likely to want to locate next time. Also this way if we have been | |
11955 | called from unrecord_section_with_arm_elf_section_data() we will not | |
11956 | be caching a pointer that is about to be freed. */ | |
11957 | last_entry = entry->prev; | |
11958 | ||
11959 | return entry; | |
11960 | } | |
11961 | ||
11962 | static _arm_elf_section_data * | |
11963 | get_arm_elf_section_data (asection * sec) | |
11964 | { | |
11965 | struct section_list * entry; | |
11966 | ||
11967 | entry = find_arm_elf_section_entry (sec); | |
11968 | ||
11969 | if (entry) | |
11970 | return elf32_arm_section_data (entry->sec); | |
11971 | else | |
11972 | return NULL; | |
8e3de13a NC |
11973 | } |
11974 | ||
11975 | static void | |
11976 | unrecord_section_with_arm_elf_section_data (asection * sec) | |
11977 | { | |
11978 | struct section_list * entry; | |
11979 | ||
44444f50 NC |
11980 | entry = find_arm_elf_section_entry (sec); |
11981 | ||
11982 | if (entry) | |
11983 | { | |
11984 | if (entry->prev != NULL) | |
11985 | entry->prev->next = entry->next; | |
11986 | if (entry->next != NULL) | |
11987 | entry->next->prev = entry->prev; | |
11988 | if (entry == sections_with_arm_elf_section_data) | |
11989 | sections_with_arm_elf_section_data = entry->next; | |
11990 | free (entry); | |
11991 | } | |
8e3de13a NC |
11992 | } |
11993 | ||
e489d0ae | 11994 | |
4e617b1e PB |
11995 | typedef struct |
11996 | { | |
11997 | void *finfo; | |
11998 | struct bfd_link_info *info; | |
91a5743d PB |
11999 | asection *sec; |
12000 | int sec_shndx; | |
4e617b1e PB |
12001 | bfd_boolean (*func) (void *, const char *, Elf_Internal_Sym *, |
12002 | asection *, struct elf_link_hash_entry *); | |
12003 | } output_arch_syminfo; | |
12004 | ||
12005 | enum map_symbol_type | |
12006 | { | |
12007 | ARM_MAP_ARM, | |
12008 | ARM_MAP_THUMB, | |
12009 | ARM_MAP_DATA | |
12010 | }; | |
12011 | ||
12012 | ||
7413f23f | 12013 | /* Output a single mapping symbol. */ |
4e617b1e PB |
12014 | |
12015 | static bfd_boolean | |
7413f23f DJ |
12016 | elf32_arm_output_map_sym (output_arch_syminfo *osi, |
12017 | enum map_symbol_type type, | |
12018 | bfd_vma offset) | |
4e617b1e PB |
12019 | { |
12020 | static const char *names[3] = {"$a", "$t", "$d"}; | |
12021 | struct elf32_arm_link_hash_table *htab; | |
12022 | Elf_Internal_Sym sym; | |
12023 | ||
12024 | htab = elf32_arm_hash_table (osi->info); | |
91a5743d PB |
12025 | sym.st_value = osi->sec->output_section->vma |
12026 | + osi->sec->output_offset | |
12027 | + offset; | |
4e617b1e PB |
12028 | sym.st_size = 0; |
12029 | sym.st_other = 0; | |
12030 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
91a5743d PB |
12031 | sym.st_shndx = osi->sec_shndx; |
12032 | if (!osi->func (osi->finfo, names[type], &sym, osi->sec, NULL)) | |
4e617b1e PB |
12033 | return FALSE; |
12034 | return TRUE; | |
12035 | } | |
12036 | ||
12037 | ||
12038 | /* Output mapping symbols for PLT entries associated with H. */ | |
12039 | ||
12040 | static bfd_boolean | |
12041 | elf32_arm_output_plt_map (struct elf_link_hash_entry *h, void *inf) | |
12042 | { | |
12043 | output_arch_syminfo *osi = (output_arch_syminfo *) inf; | |
12044 | struct elf32_arm_link_hash_table *htab; | |
12045 | struct elf32_arm_link_hash_entry *eh; | |
12046 | bfd_vma addr; | |
12047 | ||
12048 | htab = elf32_arm_hash_table (osi->info); | |
12049 | ||
12050 | if (h->root.type == bfd_link_hash_indirect) | |
12051 | return TRUE; | |
12052 | ||
12053 | if (h->root.type == bfd_link_hash_warning) | |
12054 | /* When warning symbols are created, they **replace** the "real" | |
12055 | entry in the hash table, thus we never get to see the real | |
12056 | symbol in a hash traversal. So look at it now. */ | |
12057 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
12058 | ||
12059 | if (h->plt.offset == (bfd_vma) -1) | |
12060 | return TRUE; | |
12061 | ||
12062 | eh = (struct elf32_arm_link_hash_entry *) h; | |
12063 | addr = h->plt.offset; | |
12064 | if (htab->symbian_p) | |
12065 | { | |
7413f23f | 12066 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr)) |
4e617b1e | 12067 | return FALSE; |
7413f23f | 12068 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 4)) |
4e617b1e PB |
12069 | return FALSE; |
12070 | } | |
12071 | else if (htab->vxworks_p) | |
12072 | { | |
7413f23f | 12073 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr)) |
4e617b1e | 12074 | return FALSE; |
7413f23f | 12075 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 8)) |
4e617b1e | 12076 | return FALSE; |
7413f23f | 12077 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr + 12)) |
4e617b1e | 12078 | return FALSE; |
7413f23f | 12079 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 20)) |
4e617b1e PB |
12080 | return FALSE; |
12081 | } | |
12082 | else | |
12083 | { | |
bd97cb95 DJ |
12084 | bfd_signed_vma thumb_refs; |
12085 | ||
12086 | thumb_refs = eh->plt_thumb_refcount; | |
12087 | if (!htab->use_blx) | |
12088 | thumb_refs += eh->plt_maybe_thumb_refcount; | |
4e617b1e | 12089 | |
bd97cb95 | 12090 | if (thumb_refs > 0) |
4e617b1e | 12091 | { |
7413f23f | 12092 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_THUMB, addr - 4)) |
4e617b1e PB |
12093 | return FALSE; |
12094 | } | |
12095 | #ifdef FOUR_WORD_PLT | |
7413f23f | 12096 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr)) |
4e617b1e | 12097 | return FALSE; |
7413f23f | 12098 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 12)) |
4e617b1e PB |
12099 | return FALSE; |
12100 | #else | |
906e58ca | 12101 | /* A three-word PLT with no Thumb thunk contains only Arm code, |
4e617b1e PB |
12102 | so only need to output a mapping symbol for the first PLT entry and |
12103 | entries with thumb thunks. */ | |
bd97cb95 | 12104 | if (thumb_refs > 0 || addr == 20) |
4e617b1e | 12105 | { |
7413f23f | 12106 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr)) |
4e617b1e PB |
12107 | return FALSE; |
12108 | } | |
12109 | #endif | |
12110 | } | |
12111 | ||
12112 | return TRUE; | |
12113 | } | |
12114 | ||
7413f23f DJ |
12115 | /* Output a single local symbol for a generated stub. */ |
12116 | ||
12117 | static bfd_boolean | |
12118 | elf32_arm_output_stub_sym (output_arch_syminfo *osi, const char *name, | |
12119 | bfd_vma offset, bfd_vma size) | |
12120 | { | |
12121 | struct elf32_arm_link_hash_table *htab; | |
12122 | Elf_Internal_Sym sym; | |
12123 | ||
12124 | htab = elf32_arm_hash_table (osi->info); | |
12125 | sym.st_value = osi->sec->output_section->vma | |
12126 | + osi->sec->output_offset | |
12127 | + offset; | |
12128 | sym.st_size = size; | |
12129 | sym.st_other = 0; | |
12130 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
12131 | sym.st_shndx = osi->sec_shndx; | |
12132 | if (!osi->func (osi->finfo, name, &sym, osi->sec, NULL)) | |
12133 | return FALSE; | |
12134 | return TRUE; | |
12135 | } | |
4e617b1e | 12136 | |
da5938a2 | 12137 | static bfd_boolean |
8029a119 NC |
12138 | arm_map_one_stub (struct bfd_hash_entry * gen_entry, |
12139 | void * in_arg) | |
da5938a2 NC |
12140 | { |
12141 | struct elf32_arm_stub_hash_entry *stub_entry; | |
12142 | struct bfd_link_info *info; | |
12143 | struct elf32_arm_link_hash_table *htab; | |
12144 | asection *stub_sec; | |
12145 | bfd_vma addr; | |
7413f23f | 12146 | char *stub_name; |
9a008db3 | 12147 | output_arch_syminfo *osi; |
461a49ca DJ |
12148 | const insn_sequence *template; |
12149 | enum stub_insn_type prev_type; | |
12150 | int size; | |
12151 | int i; | |
12152 | enum map_symbol_type sym_type; | |
da5938a2 NC |
12153 | |
12154 | /* Massage our args to the form they really have. */ | |
12155 | stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry; | |
9a008db3 | 12156 | osi = (output_arch_syminfo *) in_arg; |
da5938a2 | 12157 | |
da5938a2 NC |
12158 | info = osi->info; |
12159 | ||
12160 | htab = elf32_arm_hash_table (info); | |
12161 | stub_sec = stub_entry->stub_sec; | |
12162 | ||
12163 | /* Ensure this stub is attached to the current section being | |
7413f23f | 12164 | processed. */ |
da5938a2 NC |
12165 | if (stub_sec != osi->sec) |
12166 | return TRUE; | |
12167 | ||
7413f23f DJ |
12168 | addr = (bfd_vma) stub_entry->stub_offset; |
12169 | stub_name = stub_entry->output_name; | |
da5938a2 | 12170 | |
461a49ca | 12171 | template = stub_entry->stub_template; |
4e31c731 | 12172 | switch (template[0].type) |
7413f23f | 12173 | { |
461a49ca DJ |
12174 | case ARM_TYPE: |
12175 | if (!elf32_arm_output_stub_sym (osi, stub_name, addr, stub_entry->stub_size)) | |
da5938a2 NC |
12176 | return FALSE; |
12177 | break; | |
461a49ca DJ |
12178 | case THUMB16_TYPE: |
12179 | if (!elf32_arm_output_stub_sym (osi, stub_name, addr | 1, | |
12180 | stub_entry->stub_size)) | |
da5938a2 NC |
12181 | return FALSE; |
12182 | break; | |
12183 | default: | |
12184 | BFD_FAIL (); | |
4e31c731 | 12185 | return FALSE; |
7413f23f | 12186 | } |
da5938a2 | 12187 | |
461a49ca DJ |
12188 | prev_type = DATA_TYPE; |
12189 | size = 0; | |
12190 | for (i = 0; i < stub_entry->stub_template_size; i++) | |
12191 | { | |
4e31c731 | 12192 | switch (template[i].type) |
461a49ca DJ |
12193 | { |
12194 | case ARM_TYPE: | |
12195 | sym_type = ARM_MAP_ARM; | |
12196 | break; | |
12197 | ||
12198 | case THUMB16_TYPE: | |
12199 | sym_type = ARM_MAP_THUMB; | |
12200 | break; | |
12201 | ||
12202 | case DATA_TYPE: | |
12203 | sym_type = ARM_MAP_DATA; | |
12204 | break; | |
12205 | ||
12206 | default: | |
12207 | BFD_FAIL (); | |
4e31c731 | 12208 | return FALSE; |
461a49ca DJ |
12209 | } |
12210 | ||
12211 | if (template[i].type != prev_type) | |
12212 | { | |
12213 | prev_type = template[i].type; | |
12214 | if (!elf32_arm_output_map_sym (osi, sym_type, addr + size)) | |
12215 | return FALSE; | |
12216 | } | |
12217 | ||
4e31c731 | 12218 | switch (template[i].type) |
461a49ca DJ |
12219 | { |
12220 | case ARM_TYPE: | |
12221 | size += 4; | |
12222 | break; | |
12223 | ||
12224 | case THUMB16_TYPE: | |
12225 | size += 2; | |
12226 | break; | |
12227 | ||
12228 | case DATA_TYPE: | |
12229 | size += 4; | |
12230 | break; | |
12231 | ||
12232 | default: | |
12233 | BFD_FAIL (); | |
4e31c731 | 12234 | return FALSE; |
461a49ca DJ |
12235 | } |
12236 | } | |
12237 | ||
da5938a2 NC |
12238 | return TRUE; |
12239 | } | |
12240 | ||
91a5743d | 12241 | /* Output mapping symbols for linker generated sections. */ |
4e617b1e PB |
12242 | |
12243 | static bfd_boolean | |
12244 | elf32_arm_output_arch_local_syms (bfd *output_bfd, | |
906e58ca NC |
12245 | struct bfd_link_info *info, |
12246 | void *finfo, | |
12247 | bfd_boolean (*func) (void *, const char *, | |
12248 | Elf_Internal_Sym *, | |
12249 | asection *, | |
12250 | struct elf_link_hash_entry *)) | |
4e617b1e PB |
12251 | { |
12252 | output_arch_syminfo osi; | |
12253 | struct elf32_arm_link_hash_table *htab; | |
91a5743d PB |
12254 | bfd_vma offset; |
12255 | bfd_size_type size; | |
4e617b1e PB |
12256 | |
12257 | htab = elf32_arm_hash_table (info); | |
906e58ca | 12258 | check_use_blx (htab); |
91a5743d | 12259 | |
4e617b1e PB |
12260 | osi.finfo = finfo; |
12261 | osi.info = info; | |
12262 | osi.func = func; | |
906e58ca | 12263 | |
91a5743d PB |
12264 | /* ARM->Thumb glue. */ |
12265 | if (htab->arm_glue_size > 0) | |
12266 | { | |
12267 | osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner, | |
12268 | ARM2THUMB_GLUE_SECTION_NAME); | |
12269 | ||
12270 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
12271 | (output_bfd, osi.sec->output_section); | |
12272 | if (info->shared || htab->root.is_relocatable_executable | |
12273 | || htab->pic_veneer) | |
12274 | size = ARM2THUMB_PIC_GLUE_SIZE; | |
12275 | else if (htab->use_blx) | |
12276 | size = ARM2THUMB_V5_STATIC_GLUE_SIZE; | |
12277 | else | |
12278 | size = ARM2THUMB_STATIC_GLUE_SIZE; | |
4e617b1e | 12279 | |
91a5743d PB |
12280 | for (offset = 0; offset < htab->arm_glue_size; offset += size) |
12281 | { | |
7413f23f DJ |
12282 | elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, offset); |
12283 | elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, offset + size - 4); | |
91a5743d PB |
12284 | } |
12285 | } | |
12286 | ||
12287 | /* Thumb->ARM glue. */ | |
12288 | if (htab->thumb_glue_size > 0) | |
12289 | { | |
12290 | osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner, | |
12291 | THUMB2ARM_GLUE_SECTION_NAME); | |
12292 | ||
12293 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
12294 | (output_bfd, osi.sec->output_section); | |
12295 | size = THUMB2ARM_GLUE_SIZE; | |
12296 | ||
12297 | for (offset = 0; offset < htab->thumb_glue_size; offset += size) | |
12298 | { | |
7413f23f DJ |
12299 | elf32_arm_output_map_sym (&osi, ARM_MAP_THUMB, offset); |
12300 | elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, offset + 4); | |
91a5743d PB |
12301 | } |
12302 | } | |
12303 | ||
845b51d6 PB |
12304 | /* ARMv4 BX veneers. */ |
12305 | if (htab->bx_glue_size > 0) | |
12306 | { | |
12307 | osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner, | |
12308 | ARM_BX_GLUE_SECTION_NAME); | |
12309 | ||
12310 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
12311 | (output_bfd, osi.sec->output_section); | |
12312 | ||
7413f23f | 12313 | elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0); |
845b51d6 PB |
12314 | } |
12315 | ||
8029a119 NC |
12316 | /* Long calls stubs. */ |
12317 | if (htab->stub_bfd && htab->stub_bfd->sections) | |
12318 | { | |
da5938a2 | 12319 | asection* stub_sec; |
8029a119 | 12320 | |
da5938a2 NC |
12321 | for (stub_sec = htab->stub_bfd->sections; |
12322 | stub_sec != NULL; | |
8029a119 NC |
12323 | stub_sec = stub_sec->next) |
12324 | { | |
12325 | /* Ignore non-stub sections. */ | |
12326 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
12327 | continue; | |
da5938a2 | 12328 | |
8029a119 | 12329 | osi.sec = stub_sec; |
da5938a2 | 12330 | |
8029a119 NC |
12331 | osi.sec_shndx = _bfd_elf_section_from_bfd_section |
12332 | (output_bfd, osi.sec->output_section); | |
da5938a2 | 12333 | |
8029a119 NC |
12334 | bfd_hash_traverse (&htab->stub_hash_table, arm_map_one_stub, &osi); |
12335 | } | |
12336 | } | |
da5938a2 | 12337 | |
91a5743d PB |
12338 | /* Finally, output mapping symbols for the PLT. */ |
12339 | if (!htab->splt || htab->splt->size == 0) | |
12340 | return TRUE; | |
12341 | ||
12342 | osi.sec_shndx = _bfd_elf_section_from_bfd_section (output_bfd, | |
8029a119 | 12343 | htab->splt->output_section); |
91a5743d | 12344 | osi.sec = htab->splt; |
4e617b1e PB |
12345 | /* Output mapping symbols for the plt header. SymbianOS does not have a |
12346 | plt header. */ | |
12347 | if (htab->vxworks_p) | |
12348 | { | |
12349 | /* VxWorks shared libraries have no PLT header. */ | |
12350 | if (!info->shared) | |
12351 | { | |
7413f23f | 12352 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0)) |
4e617b1e | 12353 | return FALSE; |
7413f23f | 12354 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 12)) |
4e617b1e PB |
12355 | return FALSE; |
12356 | } | |
12357 | } | |
12358 | else if (!htab->symbian_p) | |
12359 | { | |
7413f23f | 12360 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0)) |
4e617b1e PB |
12361 | return FALSE; |
12362 | #ifndef FOUR_WORD_PLT | |
7413f23f | 12363 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 16)) |
4e617b1e PB |
12364 | return FALSE; |
12365 | #endif | |
12366 | } | |
12367 | ||
12368 | elf_link_hash_traverse (&htab->root, elf32_arm_output_plt_map, (void *) &osi); | |
12369 | return TRUE; | |
12370 | } | |
12371 | ||
e489d0ae PB |
12372 | /* Allocate target specific section data. */ |
12373 | ||
12374 | static bfd_boolean | |
12375 | elf32_arm_new_section_hook (bfd *abfd, asection *sec) | |
12376 | { | |
f592407e AM |
12377 | if (!sec->used_by_bfd) |
12378 | { | |
12379 | _arm_elf_section_data *sdata; | |
12380 | bfd_size_type amt = sizeof (*sdata); | |
e489d0ae | 12381 | |
f592407e AM |
12382 | sdata = bfd_zalloc (abfd, amt); |
12383 | if (sdata == NULL) | |
12384 | return FALSE; | |
12385 | sec->used_by_bfd = sdata; | |
12386 | } | |
e489d0ae | 12387 | |
957c6e41 | 12388 | record_section_with_arm_elf_section_data (sec); |
8e3de13a | 12389 | |
e489d0ae PB |
12390 | return _bfd_elf_new_section_hook (abfd, sec); |
12391 | } | |
12392 | ||
12393 | ||
12394 | /* Used to order a list of mapping symbols by address. */ | |
12395 | ||
12396 | static int | |
12397 | elf32_arm_compare_mapping (const void * a, const void * b) | |
12398 | { | |
7f6a71ff JM |
12399 | const elf32_arm_section_map *amap = (const elf32_arm_section_map *) a; |
12400 | const elf32_arm_section_map *bmap = (const elf32_arm_section_map *) b; | |
12401 | ||
12402 | if (amap->vma > bmap->vma) | |
12403 | return 1; | |
12404 | else if (amap->vma < bmap->vma) | |
12405 | return -1; | |
12406 | else if (amap->type > bmap->type) | |
12407 | /* Ensure results do not depend on the host qsort for objects with | |
12408 | multiple mapping symbols at the same address by sorting on type | |
12409 | after vma. */ | |
12410 | return 1; | |
12411 | else if (amap->type < bmap->type) | |
12412 | return -1; | |
12413 | else | |
12414 | return 0; | |
e489d0ae PB |
12415 | } |
12416 | ||
2468f9c9 PB |
12417 | /* Add OFFSET to lower 31 bits of ADDR, leaving other bits unmodified. */ |
12418 | ||
12419 | static unsigned long | |
12420 | offset_prel31 (unsigned long addr, bfd_vma offset) | |
12421 | { | |
12422 | return (addr & ~0x7ffffffful) | ((addr + offset) & 0x7ffffffful); | |
12423 | } | |
12424 | ||
12425 | /* Copy an .ARM.exidx table entry, adding OFFSET to (applied) PREL31 | |
12426 | relocations. */ | |
12427 | ||
12428 | static void | |
12429 | copy_exidx_entry (bfd *output_bfd, bfd_byte *to, bfd_byte *from, bfd_vma offset) | |
12430 | { | |
12431 | unsigned long first_word = bfd_get_32 (output_bfd, from); | |
12432 | unsigned long second_word = bfd_get_32 (output_bfd, from + 4); | |
12433 | ||
12434 | /* High bit of first word is supposed to be zero. */ | |
12435 | if ((first_word & 0x80000000ul) == 0) | |
12436 | first_word = offset_prel31 (first_word, offset); | |
12437 | ||
12438 | /* If the high bit of the first word is clear, and the bit pattern is not 0x1 | |
12439 | (EXIDX_CANTUNWIND), this is an offset to an .ARM.extab entry. */ | |
12440 | if ((second_word != 0x1) && ((second_word & 0x80000000ul) == 0)) | |
12441 | second_word = offset_prel31 (second_word, offset); | |
12442 | ||
12443 | bfd_put_32 (output_bfd, first_word, to); | |
12444 | bfd_put_32 (output_bfd, second_word, to + 4); | |
12445 | } | |
e489d0ae PB |
12446 | |
12447 | /* Do code byteswapping. Return FALSE afterwards so that the section is | |
12448 | written out as normal. */ | |
12449 | ||
12450 | static bfd_boolean | |
c7b8f16e | 12451 | elf32_arm_write_section (bfd *output_bfd, |
8029a119 NC |
12452 | struct bfd_link_info *link_info, |
12453 | asection *sec, | |
e489d0ae PB |
12454 | bfd_byte *contents) |
12455 | { | |
c7b8f16e | 12456 | int mapcount, errcount; |
8e3de13a | 12457 | _arm_elf_section_data *arm_data; |
c7b8f16e | 12458 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); |
e489d0ae | 12459 | elf32_arm_section_map *map; |
c7b8f16e | 12460 | elf32_vfp11_erratum_list *errnode; |
e489d0ae PB |
12461 | bfd_vma ptr; |
12462 | bfd_vma end; | |
c7b8f16e | 12463 | bfd_vma offset = sec->output_section->vma + sec->output_offset; |
e489d0ae PB |
12464 | bfd_byte tmp; |
12465 | int i; | |
57e8b36a | 12466 | |
8e3de13a NC |
12467 | /* If this section has not been allocated an _arm_elf_section_data |
12468 | structure then we cannot record anything. */ | |
12469 | arm_data = get_arm_elf_section_data (sec); | |
12470 | if (arm_data == NULL) | |
12471 | return FALSE; | |
12472 | ||
12473 | mapcount = arm_data->mapcount; | |
12474 | map = arm_data->map; | |
c7b8f16e JB |
12475 | errcount = arm_data->erratumcount; |
12476 | ||
12477 | if (errcount != 0) | |
12478 | { | |
12479 | unsigned int endianflip = bfd_big_endian (output_bfd) ? 3 : 0; | |
12480 | ||
12481 | for (errnode = arm_data->erratumlist; errnode != 0; | |
12482 | errnode = errnode->next) | |
12483 | { | |
12484 | bfd_vma index = errnode->vma - offset; | |
12485 | ||
12486 | switch (errnode->type) | |
12487 | { | |
12488 | case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER: | |
12489 | { | |
12490 | bfd_vma branch_to_veneer; | |
12491 | /* Original condition code of instruction, plus bit mask for | |
12492 | ARM B instruction. */ | |
12493 | unsigned int insn = (errnode->u.b.vfp_insn & 0xf0000000) | |
12494 | | 0x0a000000; | |
12495 | ||
12496 | /* The instruction is before the label. */ | |
12497 | index -= 4; | |
12498 | ||
12499 | /* Above offset included in -4 below. */ | |
12500 | branch_to_veneer = errnode->u.b.veneer->vma | |
12501 | - errnode->vma - 4; | |
12502 | ||
12503 | if ((signed) branch_to_veneer < -(1 << 25) | |
12504 | || (signed) branch_to_veneer >= (1 << 25)) | |
12505 | (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of " | |
12506 | "range"), output_bfd); | |
12507 | ||
12508 | insn |= (branch_to_veneer >> 2) & 0xffffff; | |
12509 | contents[endianflip ^ index] = insn & 0xff; | |
12510 | contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff; | |
12511 | contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff; | |
12512 | contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff; | |
12513 | } | |
12514 | break; | |
12515 | ||
12516 | case VFP11_ERRATUM_ARM_VENEER: | |
12517 | { | |
12518 | bfd_vma branch_from_veneer; | |
12519 | unsigned int insn; | |
12520 | ||
12521 | /* Take size of veneer into account. */ | |
12522 | branch_from_veneer = errnode->u.v.branch->vma | |
12523 | - errnode->vma - 12; | |
12524 | ||
12525 | if ((signed) branch_from_veneer < -(1 << 25) | |
12526 | || (signed) branch_from_veneer >= (1 << 25)) | |
12527 | (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of " | |
12528 | "range"), output_bfd); | |
12529 | ||
12530 | /* Original instruction. */ | |
12531 | insn = errnode->u.v.branch->u.b.vfp_insn; | |
12532 | contents[endianflip ^ index] = insn & 0xff; | |
12533 | contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff; | |
12534 | contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff; | |
12535 | contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff; | |
12536 | ||
12537 | /* Branch back to insn after original insn. */ | |
12538 | insn = 0xea000000 | ((branch_from_veneer >> 2) & 0xffffff); | |
12539 | contents[endianflip ^ (index + 4)] = insn & 0xff; | |
12540 | contents[endianflip ^ (index + 5)] = (insn >> 8) & 0xff; | |
12541 | contents[endianflip ^ (index + 6)] = (insn >> 16) & 0xff; | |
12542 | contents[endianflip ^ (index + 7)] = (insn >> 24) & 0xff; | |
12543 | } | |
12544 | break; | |
12545 | ||
12546 | default: | |
12547 | abort (); | |
12548 | } | |
12549 | } | |
12550 | } | |
e489d0ae | 12551 | |
2468f9c9 PB |
12552 | if (arm_data->elf.this_hdr.sh_type == SHT_ARM_EXIDX) |
12553 | { | |
12554 | arm_unwind_table_edit *edit_node | |
12555 | = arm_data->u.exidx.unwind_edit_list; | |
12556 | /* Now, sec->size is the size of the section we will write. The original | |
12557 | size (before we merged duplicate entries and inserted EXIDX_CANTUNWIND | |
12558 | markers) was sec->rawsize. (This isn't the case if we perform no | |
12559 | edits, then rawsize will be zero and we should use size). */ | |
12560 | bfd_byte *edited_contents = bfd_malloc (sec->size); | |
12561 | unsigned int input_size = sec->rawsize ? sec->rawsize : sec->size; | |
12562 | unsigned int in_index, out_index; | |
12563 | bfd_vma add_to_offsets = 0; | |
12564 | ||
12565 | for (in_index = 0, out_index = 0; in_index * 8 < input_size || edit_node;) | |
12566 | { | |
12567 | if (edit_node) | |
12568 | { | |
12569 | unsigned int edit_index = edit_node->index; | |
12570 | ||
12571 | if (in_index < edit_index && in_index * 8 < input_size) | |
12572 | { | |
12573 | copy_exidx_entry (output_bfd, edited_contents + out_index * 8, | |
12574 | contents + in_index * 8, add_to_offsets); | |
12575 | out_index++; | |
12576 | in_index++; | |
12577 | } | |
12578 | else if (in_index == edit_index | |
12579 | || (in_index * 8 >= input_size | |
12580 | && edit_index == UINT_MAX)) | |
12581 | { | |
12582 | switch (edit_node->type) | |
12583 | { | |
12584 | case DELETE_EXIDX_ENTRY: | |
12585 | in_index++; | |
12586 | add_to_offsets += 8; | |
12587 | break; | |
12588 | ||
12589 | case INSERT_EXIDX_CANTUNWIND_AT_END: | |
12590 | { | |
12591 | asection *text_sec = edit_node->linked_section; | |
12592 | bfd_vma text_offset = text_sec->output_section->vma | |
12593 | + text_sec->output_offset | |
12594 | + text_sec->size; | |
12595 | bfd_vma exidx_offset = offset + out_index * 8; | |
12596 | unsigned long prel31_offset; | |
12597 | ||
12598 | /* Note: this is meant to be equivalent to an | |
12599 | R_ARM_PREL31 relocation. These synthetic | |
12600 | EXIDX_CANTUNWIND markers are not relocated by the | |
12601 | usual BFD method. */ | |
12602 | prel31_offset = (text_offset - exidx_offset) | |
12603 | & 0x7ffffffful; | |
12604 | ||
12605 | /* First address we can't unwind. */ | |
12606 | bfd_put_32 (output_bfd, prel31_offset, | |
12607 | &edited_contents[out_index * 8]); | |
12608 | ||
12609 | /* Code for EXIDX_CANTUNWIND. */ | |
12610 | bfd_put_32 (output_bfd, 0x1, | |
12611 | &edited_contents[out_index * 8 + 4]); | |
12612 | ||
12613 | out_index++; | |
12614 | add_to_offsets -= 8; | |
12615 | } | |
12616 | break; | |
12617 | } | |
12618 | ||
12619 | edit_node = edit_node->next; | |
12620 | } | |
12621 | } | |
12622 | else | |
12623 | { | |
12624 | /* No more edits, copy remaining entries verbatim. */ | |
12625 | copy_exidx_entry (output_bfd, edited_contents + out_index * 8, | |
12626 | contents + in_index * 8, add_to_offsets); | |
12627 | out_index++; | |
12628 | in_index++; | |
12629 | } | |
12630 | } | |
12631 | ||
12632 | if (!(sec->flags & SEC_EXCLUDE) && !(sec->flags & SEC_NEVER_LOAD)) | |
12633 | bfd_set_section_contents (output_bfd, sec->output_section, | |
12634 | edited_contents, | |
12635 | (file_ptr) sec->output_offset, sec->size); | |
12636 | ||
12637 | return TRUE; | |
12638 | } | |
12639 | ||
e489d0ae PB |
12640 | if (mapcount == 0) |
12641 | return FALSE; | |
12642 | ||
c7b8f16e | 12643 | if (globals->byteswap_code) |
e489d0ae | 12644 | { |
c7b8f16e | 12645 | qsort (map, mapcount, sizeof (* map), elf32_arm_compare_mapping); |
57e8b36a | 12646 | |
c7b8f16e JB |
12647 | ptr = map[0].vma; |
12648 | for (i = 0; i < mapcount; i++) | |
12649 | { | |
12650 | if (i == mapcount - 1) | |
12651 | end = sec->size; | |
12652 | else | |
12653 | end = map[i + 1].vma; | |
e489d0ae | 12654 | |
c7b8f16e | 12655 | switch (map[i].type) |
e489d0ae | 12656 | { |
c7b8f16e JB |
12657 | case 'a': |
12658 | /* Byte swap code words. */ | |
12659 | while (ptr + 3 < end) | |
12660 | { | |
12661 | tmp = contents[ptr]; | |
12662 | contents[ptr] = contents[ptr + 3]; | |
12663 | contents[ptr + 3] = tmp; | |
12664 | tmp = contents[ptr + 1]; | |
12665 | contents[ptr + 1] = contents[ptr + 2]; | |
12666 | contents[ptr + 2] = tmp; | |
12667 | ptr += 4; | |
12668 | } | |
12669 | break; | |
e489d0ae | 12670 | |
c7b8f16e JB |
12671 | case 't': |
12672 | /* Byte swap code halfwords. */ | |
12673 | while (ptr + 1 < end) | |
12674 | { | |
12675 | tmp = contents[ptr]; | |
12676 | contents[ptr] = contents[ptr + 1]; | |
12677 | contents[ptr + 1] = tmp; | |
12678 | ptr += 2; | |
12679 | } | |
12680 | break; | |
12681 | ||
12682 | case 'd': | |
12683 | /* Leave data alone. */ | |
12684 | break; | |
12685 | } | |
12686 | ptr = end; | |
12687 | } | |
e489d0ae | 12688 | } |
8e3de13a | 12689 | |
93204d3a | 12690 | free (map); |
8e3de13a | 12691 | arm_data->mapcount = 0; |
c7b8f16e | 12692 | arm_data->mapsize = 0; |
8e3de13a NC |
12693 | arm_data->map = NULL; |
12694 | unrecord_section_with_arm_elf_section_data (sec); | |
12695 | ||
e489d0ae PB |
12696 | return FALSE; |
12697 | } | |
12698 | ||
957c6e41 NC |
12699 | static void |
12700 | unrecord_section_via_map_over_sections (bfd * abfd ATTRIBUTE_UNUSED, | |
12701 | asection * sec, | |
12702 | void * ignore ATTRIBUTE_UNUSED) | |
12703 | { | |
12704 | unrecord_section_with_arm_elf_section_data (sec); | |
12705 | } | |
12706 | ||
12707 | static bfd_boolean | |
12708 | elf32_arm_close_and_cleanup (bfd * abfd) | |
12709 | { | |
b25e3d87 L |
12710 | if (abfd->sections) |
12711 | bfd_map_over_sections (abfd, | |
12712 | unrecord_section_via_map_over_sections, | |
12713 | NULL); | |
957c6e41 NC |
12714 | |
12715 | return _bfd_elf_close_and_cleanup (abfd); | |
12716 | } | |
12717 | ||
b25e3d87 L |
12718 | static bfd_boolean |
12719 | elf32_arm_bfd_free_cached_info (bfd * abfd) | |
12720 | { | |
12721 | if (abfd->sections) | |
12722 | bfd_map_over_sections (abfd, | |
12723 | unrecord_section_via_map_over_sections, | |
12724 | NULL); | |
12725 | ||
12726 | return _bfd_free_cached_info (abfd); | |
12727 | } | |
12728 | ||
b7693d02 DJ |
12729 | /* Display STT_ARM_TFUNC symbols as functions. */ |
12730 | ||
12731 | static void | |
12732 | elf32_arm_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, | |
12733 | asymbol *asym) | |
12734 | { | |
12735 | elf_symbol_type *elfsym = (elf_symbol_type *) asym; | |
12736 | ||
12737 | if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_ARM_TFUNC) | |
12738 | elfsym->symbol.flags |= BSF_FUNCTION; | |
12739 | } | |
12740 | ||
0beaef2b PB |
12741 | |
12742 | /* Mangle thumb function symbols as we read them in. */ | |
12743 | ||
8384fb8f | 12744 | static bfd_boolean |
0beaef2b PB |
12745 | elf32_arm_swap_symbol_in (bfd * abfd, |
12746 | const void *psrc, | |
12747 | const void *pshn, | |
12748 | Elf_Internal_Sym *dst) | |
12749 | { | |
8384fb8f AM |
12750 | if (!bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst)) |
12751 | return FALSE; | |
0beaef2b PB |
12752 | |
12753 | /* New EABI objects mark thumb function symbols by setting the low bit of | |
12754 | the address. Turn these into STT_ARM_TFUNC. */ | |
0f88be7a | 12755 | if ((ELF_ST_TYPE (dst->st_info) == STT_FUNC) |
0beaef2b PB |
12756 | && (dst->st_value & 1)) |
12757 | { | |
12758 | dst->st_info = ELF_ST_INFO (ELF_ST_BIND (dst->st_info), STT_ARM_TFUNC); | |
12759 | dst->st_value &= ~(bfd_vma) 1; | |
12760 | } | |
8384fb8f | 12761 | return TRUE; |
0beaef2b PB |
12762 | } |
12763 | ||
12764 | ||
12765 | /* Mangle thumb function symbols as we write them out. */ | |
12766 | ||
12767 | static void | |
12768 | elf32_arm_swap_symbol_out (bfd *abfd, | |
12769 | const Elf_Internal_Sym *src, | |
12770 | void *cdst, | |
12771 | void *shndx) | |
12772 | { | |
12773 | Elf_Internal_Sym newsym; | |
12774 | ||
12775 | /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit | |
12776 | of the address set, as per the new EABI. We do this unconditionally | |
12777 | because objcopy does not set the elf header flags until after | |
12778 | it writes out the symbol table. */ | |
12779 | if (ELF_ST_TYPE (src->st_info) == STT_ARM_TFUNC) | |
12780 | { | |
12781 | newsym = *src; | |
12782 | newsym.st_info = ELF_ST_INFO (ELF_ST_BIND (src->st_info), STT_FUNC); | |
0fa3dcad PB |
12783 | if (newsym.st_shndx != SHN_UNDEF) |
12784 | { | |
12785 | /* Do this only for defined symbols. At link type, the static | |
12786 | linker will simulate the work of dynamic linker of resolving | |
12787 | symbols and will carry over the thumbness of found symbols to | |
12788 | the output symbol table. It's not clear how it happens, but | |
b0fead2b | 12789 | the thumbness of undefined symbols can well be different at |
0fa3dcad PB |
12790 | runtime, and writing '1' for them will be confusing for users |
12791 | and possibly for dynamic linker itself. | |
12792 | */ | |
12793 | newsym.st_value |= 1; | |
12794 | } | |
906e58ca | 12795 | |
0beaef2b PB |
12796 | src = &newsym; |
12797 | } | |
12798 | bfd_elf32_swap_symbol_out (abfd, src, cdst, shndx); | |
12799 | } | |
12800 | ||
b294bdf8 MM |
12801 | /* Add the PT_ARM_EXIDX program header. */ |
12802 | ||
12803 | static bfd_boolean | |
906e58ca | 12804 | elf32_arm_modify_segment_map (bfd *abfd, |
b294bdf8 MM |
12805 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
12806 | { | |
12807 | struct elf_segment_map *m; | |
12808 | asection *sec; | |
12809 | ||
12810 | sec = bfd_get_section_by_name (abfd, ".ARM.exidx"); | |
12811 | if (sec != NULL && (sec->flags & SEC_LOAD) != 0) | |
12812 | { | |
12813 | /* If there is already a PT_ARM_EXIDX header, then we do not | |
12814 | want to add another one. This situation arises when running | |
12815 | "strip"; the input binary already has the header. */ | |
12816 | m = elf_tdata (abfd)->segment_map; | |
12817 | while (m && m->p_type != PT_ARM_EXIDX) | |
12818 | m = m->next; | |
12819 | if (!m) | |
12820 | { | |
12821 | m = bfd_zalloc (abfd, sizeof (struct elf_segment_map)); | |
12822 | if (m == NULL) | |
12823 | return FALSE; | |
12824 | m->p_type = PT_ARM_EXIDX; | |
12825 | m->count = 1; | |
12826 | m->sections[0] = sec; | |
12827 | ||
12828 | m->next = elf_tdata (abfd)->segment_map; | |
12829 | elf_tdata (abfd)->segment_map = m; | |
12830 | } | |
12831 | } | |
12832 | ||
12833 | return TRUE; | |
12834 | } | |
12835 | ||
12836 | /* We may add a PT_ARM_EXIDX program header. */ | |
12837 | ||
12838 | static int | |
a6b96beb AM |
12839 | elf32_arm_additional_program_headers (bfd *abfd, |
12840 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
b294bdf8 MM |
12841 | { |
12842 | asection *sec; | |
12843 | ||
12844 | sec = bfd_get_section_by_name (abfd, ".ARM.exidx"); | |
12845 | if (sec != NULL && (sec->flags & SEC_LOAD) != 0) | |
12846 | return 1; | |
12847 | else | |
12848 | return 0; | |
12849 | } | |
12850 | ||
fcb93ecf | 12851 | /* We have two function types: STT_FUNC and STT_ARM_TFUNC. */ |
906e58ca | 12852 | |
fcb93ecf PB |
12853 | static bfd_boolean |
12854 | elf32_arm_is_function_type (unsigned int type) | |
12855 | { | |
0f88be7a | 12856 | return (type == STT_FUNC) || (type == STT_ARM_TFUNC); |
fcb93ecf PB |
12857 | } |
12858 | ||
0beaef2b | 12859 | /* We use this to override swap_symbol_in and swap_symbol_out. */ |
906e58ca NC |
12860 | const struct elf_size_info elf32_arm_size_info = |
12861 | { | |
0beaef2b PB |
12862 | sizeof (Elf32_External_Ehdr), |
12863 | sizeof (Elf32_External_Phdr), | |
12864 | sizeof (Elf32_External_Shdr), | |
12865 | sizeof (Elf32_External_Rel), | |
12866 | sizeof (Elf32_External_Rela), | |
12867 | sizeof (Elf32_External_Sym), | |
12868 | sizeof (Elf32_External_Dyn), | |
12869 | sizeof (Elf_External_Note), | |
12870 | 4, | |
12871 | 1, | |
12872 | 32, 2, | |
12873 | ELFCLASS32, EV_CURRENT, | |
12874 | bfd_elf32_write_out_phdrs, | |
12875 | bfd_elf32_write_shdrs_and_ehdr, | |
1489a3a0 | 12876 | bfd_elf32_checksum_contents, |
0beaef2b PB |
12877 | bfd_elf32_write_relocs, |
12878 | elf32_arm_swap_symbol_in, | |
12879 | elf32_arm_swap_symbol_out, | |
12880 | bfd_elf32_slurp_reloc_table, | |
12881 | bfd_elf32_slurp_symbol_table, | |
12882 | bfd_elf32_swap_dyn_in, | |
12883 | bfd_elf32_swap_dyn_out, | |
12884 | bfd_elf32_swap_reloc_in, | |
12885 | bfd_elf32_swap_reloc_out, | |
12886 | bfd_elf32_swap_reloca_in, | |
12887 | bfd_elf32_swap_reloca_out | |
12888 | }; | |
12889 | ||
252b5132 RH |
12890 | #define ELF_ARCH bfd_arch_arm |
12891 | #define ELF_MACHINE_CODE EM_ARM | |
d0facd1b NC |
12892 | #ifdef __QNXTARGET__ |
12893 | #define ELF_MAXPAGESIZE 0x1000 | |
12894 | #else | |
f21f3fe0 | 12895 | #define ELF_MAXPAGESIZE 0x8000 |
d0facd1b | 12896 | #endif |
b1342370 | 12897 | #define ELF_MINPAGESIZE 0x1000 |
24718e3b | 12898 | #define ELF_COMMONPAGESIZE 0x1000 |
252b5132 | 12899 | |
ba93b8ac DJ |
12900 | #define bfd_elf32_mkobject elf32_arm_mkobject |
12901 | ||
99e4ae17 AJ |
12902 | #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data |
12903 | #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data | |
252b5132 RH |
12904 | #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags |
12905 | #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data | |
12906 | #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create | |
906e58ca | 12907 | #define bfd_elf32_bfd_link_hash_table_free elf32_arm_hash_table_free |
dc810e39 | 12908 | #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup |
157090f7 | 12909 | #define bfd_elf32_bfd_reloc_name_lookup elf32_arm_reloc_name_lookup |
252b5132 | 12910 | #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line |
4ab527b0 | 12911 | #define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info |
e489d0ae | 12912 | #define bfd_elf32_new_section_hook elf32_arm_new_section_hook |
3c9458e9 | 12913 | #define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol |
957c6e41 | 12914 | #define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup |
b25e3d87 | 12915 | #define bfd_elf32_bfd_free_cached_info elf32_arm_bfd_free_cached_info |
3e6b1042 | 12916 | #define bfd_elf32_bfd_final_link elf32_arm_final_link |
252b5132 RH |
12917 | |
12918 | #define elf_backend_get_symbol_type elf32_arm_get_symbol_type | |
12919 | #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook | |
6a5bb875 | 12920 | #define elf_backend_gc_mark_extra_sections elf32_arm_gc_mark_extra_sections |
252b5132 RH |
12921 | #define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook |
12922 | #define elf_backend_check_relocs elf32_arm_check_relocs | |
dc810e39 | 12923 | #define elf_backend_relocate_section elf32_arm_relocate_section |
e489d0ae | 12924 | #define elf_backend_write_section elf32_arm_write_section |
252b5132 | 12925 | #define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol |
5e681ec4 | 12926 | #define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections |
252b5132 RH |
12927 | #define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol |
12928 | #define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections | |
12929 | #define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections | |
74541ad4 | 12930 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
ba96a88f | 12931 | #define elf_backend_post_process_headers elf32_arm_post_process_headers |
99e4ae17 | 12932 | #define elf_backend_reloc_type_class elf32_arm_reloc_type_class |
c178919b | 12933 | #define elf_backend_object_p elf32_arm_object_p |
e16bb312 | 12934 | #define elf_backend_section_flags elf32_arm_section_flags |
40a18ebd NC |
12935 | #define elf_backend_fake_sections elf32_arm_fake_sections |
12936 | #define elf_backend_section_from_shdr elf32_arm_section_from_shdr | |
e16bb312 | 12937 | #define elf_backend_final_write_processing elf32_arm_final_write_processing |
5e681ec4 | 12938 | #define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol |
b7693d02 | 12939 | #define elf_backend_symbol_processing elf32_arm_symbol_processing |
0beaef2b | 12940 | #define elf_backend_size_info elf32_arm_size_info |
b294bdf8 | 12941 | #define elf_backend_modify_segment_map elf32_arm_modify_segment_map |
906e58ca NC |
12942 | #define elf_backend_additional_program_headers elf32_arm_additional_program_headers |
12943 | #define elf_backend_output_arch_local_syms elf32_arm_output_arch_local_syms | |
12944 | #define elf_backend_begin_write_processing elf32_arm_begin_write_processing | |
12945 | #define elf_backend_is_function_type elf32_arm_is_function_type | |
12946 | ||
12947 | #define elf_backend_can_refcount 1 | |
12948 | #define elf_backend_can_gc_sections 1 | |
12949 | #define elf_backend_plt_readonly 1 | |
12950 | #define elf_backend_want_got_plt 1 | |
12951 | #define elf_backend_want_plt_sym 0 | |
12952 | #define elf_backend_may_use_rel_p 1 | |
12953 | #define elf_backend_may_use_rela_p 0 | |
4e7fd91e | 12954 | #define elf_backend_default_use_rela_p 0 |
252b5132 | 12955 | |
04f7c78d | 12956 | #define elf_backend_got_header_size 12 |
04f7c78d | 12957 | |
906e58ca NC |
12958 | #undef elf_backend_obj_attrs_vendor |
12959 | #define elf_backend_obj_attrs_vendor "aeabi" | |
12960 | #undef elf_backend_obj_attrs_section | |
12961 | #define elf_backend_obj_attrs_section ".ARM.attributes" | |
12962 | #undef elf_backend_obj_attrs_arg_type | |
12963 | #define elf_backend_obj_attrs_arg_type elf32_arm_obj_attrs_arg_type | |
12964 | #undef elf_backend_obj_attrs_section_type | |
104d59d1 | 12965 | #define elf_backend_obj_attrs_section_type SHT_ARM_ATTRIBUTES |
5aa6ff7c | 12966 | #define elf_backend_obj_attrs_order elf32_arm_obj_attrs_order |
104d59d1 | 12967 | |
252b5132 | 12968 | #include "elf32-target.h" |
7f266840 | 12969 | |
906e58ca | 12970 | /* VxWorks Targets. */ |
4e7fd91e | 12971 | |
906e58ca | 12972 | #undef TARGET_LITTLE_SYM |
4e7fd91e | 12973 | #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec |
906e58ca | 12974 | #undef TARGET_LITTLE_NAME |
4e7fd91e | 12975 | #define TARGET_LITTLE_NAME "elf32-littlearm-vxworks" |
906e58ca | 12976 | #undef TARGET_BIG_SYM |
4e7fd91e | 12977 | #define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec |
906e58ca | 12978 | #undef TARGET_BIG_NAME |
4e7fd91e PB |
12979 | #define TARGET_BIG_NAME "elf32-bigarm-vxworks" |
12980 | ||
12981 | /* Like elf32_arm_link_hash_table_create -- but overrides | |
12982 | appropriately for VxWorks. */ | |
906e58ca | 12983 | |
4e7fd91e PB |
12984 | static struct bfd_link_hash_table * |
12985 | elf32_arm_vxworks_link_hash_table_create (bfd *abfd) | |
12986 | { | |
12987 | struct bfd_link_hash_table *ret; | |
12988 | ||
12989 | ret = elf32_arm_link_hash_table_create (abfd); | |
12990 | if (ret) | |
12991 | { | |
12992 | struct elf32_arm_link_hash_table *htab | |
00a97672 | 12993 | = (struct elf32_arm_link_hash_table *) ret; |
4e7fd91e | 12994 | htab->use_rel = 0; |
00a97672 | 12995 | htab->vxworks_p = 1; |
4e7fd91e PB |
12996 | } |
12997 | return ret; | |
906e58ca | 12998 | } |
4e7fd91e | 12999 | |
00a97672 RS |
13000 | static void |
13001 | elf32_arm_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker) | |
13002 | { | |
13003 | elf32_arm_final_write_processing (abfd, linker); | |
13004 | elf_vxworks_final_write_processing (abfd, linker); | |
13005 | } | |
13006 | ||
906e58ca | 13007 | #undef elf32_bed |
4e7fd91e PB |
13008 | #define elf32_bed elf32_arm_vxworks_bed |
13009 | ||
906e58ca NC |
13010 | #undef bfd_elf32_bfd_link_hash_table_create |
13011 | #define bfd_elf32_bfd_link_hash_table_create elf32_arm_vxworks_link_hash_table_create | |
13012 | #undef elf_backend_add_symbol_hook | |
13013 | #define elf_backend_add_symbol_hook elf_vxworks_add_symbol_hook | |
13014 | #undef elf_backend_final_write_processing | |
13015 | #define elf_backend_final_write_processing elf32_arm_vxworks_final_write_processing | |
13016 | #undef elf_backend_emit_relocs | |
13017 | #define elf_backend_emit_relocs elf_vxworks_emit_relocs | |
4e7fd91e | 13018 | |
906e58ca | 13019 | #undef elf_backend_may_use_rel_p |
00a97672 | 13020 | #define elf_backend_may_use_rel_p 0 |
906e58ca | 13021 | #undef elf_backend_may_use_rela_p |
00a97672 | 13022 | #define elf_backend_may_use_rela_p 1 |
906e58ca | 13023 | #undef elf_backend_default_use_rela_p |
00a97672 | 13024 | #define elf_backend_default_use_rela_p 1 |
906e58ca | 13025 | #undef elf_backend_want_plt_sym |
00a97672 | 13026 | #define elf_backend_want_plt_sym 1 |
906e58ca | 13027 | #undef ELF_MAXPAGESIZE |
00a97672 | 13028 | #define ELF_MAXPAGESIZE 0x1000 |
4e7fd91e PB |
13029 | |
13030 | #include "elf32-target.h" | |
13031 | ||
13032 | ||
906e58ca | 13033 | /* Symbian OS Targets. */ |
7f266840 | 13034 | |
906e58ca | 13035 | #undef TARGET_LITTLE_SYM |
7f266840 | 13036 | #define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec |
906e58ca | 13037 | #undef TARGET_LITTLE_NAME |
7f266840 | 13038 | #define TARGET_LITTLE_NAME "elf32-littlearm-symbian" |
906e58ca | 13039 | #undef TARGET_BIG_SYM |
7f266840 | 13040 | #define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec |
906e58ca | 13041 | #undef TARGET_BIG_NAME |
7f266840 DJ |
13042 | #define TARGET_BIG_NAME "elf32-bigarm-symbian" |
13043 | ||
13044 | /* Like elf32_arm_link_hash_table_create -- but overrides | |
13045 | appropriately for Symbian OS. */ | |
906e58ca | 13046 | |
7f266840 DJ |
13047 | static struct bfd_link_hash_table * |
13048 | elf32_arm_symbian_link_hash_table_create (bfd *abfd) | |
13049 | { | |
13050 | struct bfd_link_hash_table *ret; | |
13051 | ||
13052 | ret = elf32_arm_link_hash_table_create (abfd); | |
13053 | if (ret) | |
13054 | { | |
13055 | struct elf32_arm_link_hash_table *htab | |
13056 | = (struct elf32_arm_link_hash_table *)ret; | |
13057 | /* There is no PLT header for Symbian OS. */ | |
13058 | htab->plt_header_size = 0; | |
95720a86 DJ |
13059 | /* The PLT entries are each one instruction and one word. */ |
13060 | htab->plt_entry_size = 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry); | |
7f266840 | 13061 | htab->symbian_p = 1; |
33bfe774 JB |
13062 | /* Symbian uses armv5t or above, so use_blx is always true. */ |
13063 | htab->use_blx = 1; | |
67687978 | 13064 | htab->root.is_relocatable_executable = 1; |
7f266840 DJ |
13065 | } |
13066 | return ret; | |
906e58ca | 13067 | } |
7f266840 | 13068 | |
b35d266b | 13069 | static const struct bfd_elf_special_section |
551b43fd | 13070 | elf32_arm_symbian_special_sections[] = |
7f266840 | 13071 | { |
5cd3778d MM |
13072 | /* In a BPABI executable, the dynamic linking sections do not go in |
13073 | the loadable read-only segment. The post-linker may wish to | |
13074 | refer to these sections, but they are not part of the final | |
13075 | program image. */ | |
0112cd26 NC |
13076 | { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, 0 }, |
13077 | { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, 0 }, | |
13078 | { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, 0 }, | |
13079 | { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, 0 }, | |
13080 | { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, 0 }, | |
5cd3778d MM |
13081 | /* These sections do not need to be writable as the SymbianOS |
13082 | postlinker will arrange things so that no dynamic relocation is | |
13083 | required. */ | |
0112cd26 NC |
13084 | { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC }, |
13085 | { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC }, | |
13086 | { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC }, | |
13087 | { NULL, 0, 0, 0, 0 } | |
7f266840 DJ |
13088 | }; |
13089 | ||
c3c76620 | 13090 | static void |
906e58ca | 13091 | elf32_arm_symbian_begin_write_processing (bfd *abfd, |
a4fd1a8e | 13092 | struct bfd_link_info *link_info) |
c3c76620 MM |
13093 | { |
13094 | /* BPABI objects are never loaded directly by an OS kernel; they are | |
13095 | processed by a postlinker first, into an OS-specific format. If | |
13096 | the D_PAGED bit is set on the file, BFD will align segments on | |
13097 | page boundaries, so that an OS can directly map the file. With | |
13098 | BPABI objects, that just results in wasted space. In addition, | |
13099 | because we clear the D_PAGED bit, map_sections_to_segments will | |
13100 | recognize that the program headers should not be mapped into any | |
13101 | loadable segment. */ | |
13102 | abfd->flags &= ~D_PAGED; | |
906e58ca | 13103 | elf32_arm_begin_write_processing (abfd, link_info); |
c3c76620 | 13104 | } |
7f266840 DJ |
13105 | |
13106 | static bfd_boolean | |
906e58ca | 13107 | elf32_arm_symbian_modify_segment_map (bfd *abfd, |
b294bdf8 | 13108 | struct bfd_link_info *info) |
7f266840 DJ |
13109 | { |
13110 | struct elf_segment_map *m; | |
13111 | asection *dynsec; | |
13112 | ||
7f266840 DJ |
13113 | /* BPABI shared libraries and executables should have a PT_DYNAMIC |
13114 | segment. However, because the .dynamic section is not marked | |
13115 | with SEC_LOAD, the generic ELF code will not create such a | |
13116 | segment. */ | |
13117 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); | |
13118 | if (dynsec) | |
13119 | { | |
8ded5a0f AM |
13120 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
13121 | if (m->p_type == PT_DYNAMIC) | |
13122 | break; | |
13123 | ||
13124 | if (m == NULL) | |
13125 | { | |
13126 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); | |
13127 | m->next = elf_tdata (abfd)->segment_map; | |
13128 | elf_tdata (abfd)->segment_map = m; | |
13129 | } | |
7f266840 DJ |
13130 | } |
13131 | ||
b294bdf8 MM |
13132 | /* Also call the generic arm routine. */ |
13133 | return elf32_arm_modify_segment_map (abfd, info); | |
7f266840 DJ |
13134 | } |
13135 | ||
95720a86 DJ |
13136 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
13137 | or (bfd_vma) -1 if it should not be included. */ | |
13138 | ||
13139 | static bfd_vma | |
13140 | elf32_arm_symbian_plt_sym_val (bfd_vma i, const asection *plt, | |
13141 | const arelent *rel ATTRIBUTE_UNUSED) | |
13142 | { | |
13143 | return plt->vma + 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry) * i; | |
13144 | } | |
13145 | ||
13146 | ||
8029a119 | 13147 | #undef elf32_bed |
7f266840 DJ |
13148 | #define elf32_bed elf32_arm_symbian_bed |
13149 | ||
13150 | /* The dynamic sections are not allocated on SymbianOS; the postlinker | |
13151 | will process them and then discard them. */ | |
906e58ca | 13152 | #undef ELF_DYNAMIC_SEC_FLAGS |
7f266840 DJ |
13153 | #define ELF_DYNAMIC_SEC_FLAGS \ |
13154 | (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED) | |
13155 | ||
00a97672 | 13156 | #undef elf_backend_add_symbol_hook |
00a97672 | 13157 | #undef elf_backend_emit_relocs |
c3c76620 | 13158 | |
906e58ca NC |
13159 | #undef bfd_elf32_bfd_link_hash_table_create |
13160 | #define bfd_elf32_bfd_link_hash_table_create elf32_arm_symbian_link_hash_table_create | |
13161 | #undef elf_backend_special_sections | |
13162 | #define elf_backend_special_sections elf32_arm_symbian_special_sections | |
13163 | #undef elf_backend_begin_write_processing | |
13164 | #define elf_backend_begin_write_processing elf32_arm_symbian_begin_write_processing | |
13165 | #undef elf_backend_final_write_processing | |
13166 | #define elf_backend_final_write_processing elf32_arm_final_write_processing | |
13167 | ||
13168 | #undef elf_backend_modify_segment_map | |
7f266840 DJ |
13169 | #define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map |
13170 | ||
13171 | /* There is no .got section for BPABI objects, and hence no header. */ | |
906e58ca | 13172 | #undef elf_backend_got_header_size |
7f266840 DJ |
13173 | #define elf_backend_got_header_size 0 |
13174 | ||
13175 | /* Similarly, there is no .got.plt section. */ | |
906e58ca | 13176 | #undef elf_backend_want_got_plt |
7f266840 DJ |
13177 | #define elf_backend_want_got_plt 0 |
13178 | ||
906e58ca | 13179 | #undef elf_backend_plt_sym_val |
95720a86 DJ |
13180 | #define elf_backend_plt_sym_val elf32_arm_symbian_plt_sym_val |
13181 | ||
906e58ca | 13182 | #undef elf_backend_may_use_rel_p |
00a97672 | 13183 | #define elf_backend_may_use_rel_p 1 |
906e58ca | 13184 | #undef elf_backend_may_use_rela_p |
00a97672 | 13185 | #define elf_backend_may_use_rela_p 0 |
906e58ca | 13186 | #undef elf_backend_default_use_rela_p |
00a97672 | 13187 | #define elf_backend_default_use_rela_p 0 |
906e58ca | 13188 | #undef elf_backend_want_plt_sym |
00a97672 | 13189 | #define elf_backend_want_plt_sym 0 |
906e58ca | 13190 | #undef ELF_MAXPAGESIZE |
00a97672 | 13191 | #define ELF_MAXPAGESIZE 0x8000 |
4e7fd91e | 13192 | |
7f266840 | 13193 | #include "elf32-target.h" |