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 | ||
48229727 JB |
2029 | #define THUMB16_INSN(X) {(X), THUMB16_TYPE, R_ARM_NONE, 0} |
2030 | /* A bit of a hack. A Thumb conditional branch, in which the proper condition | |
2031 | is inserted in arm_build_one_stub(). */ | |
2032 | #define THUMB16_BCOND_INSN(X) {(X), THUMB16_TYPE, R_ARM_NONE, 1} | |
2033 | #define THUMB32_INSN(X) {(X), THUMB32_TYPE, R_ARM_NONE, 0} | |
2034 | #define THUMB32_B_INSN(X, Z) {(X), THUMB32_TYPE, R_ARM_THM_JUMP24, (Z)} | |
2035 | #define ARM_INSN(X) {(X), ARM_TYPE, R_ARM_NONE, 0} | |
2036 | #define ARM_REL_INSN(X, Z) {(X), ARM_TYPE, R_ARM_JUMP24, (Z)} | |
2037 | #define DATA_WORD(X,Y,Z) {(X), DATA_TYPE, (Y), (Z)} | |
461a49ca DJ |
2038 | |
2039 | typedef struct | |
2040 | { | |
2041 | bfd_vma data; | |
2042 | enum stub_insn_type type; | |
ebe24dd4 | 2043 | unsigned int r_type; |
461a49ca DJ |
2044 | int reloc_addend; |
2045 | } insn_sequence; | |
2046 | ||
fea2b4d6 CL |
2047 | /* Arm/Thumb -> Arm/Thumb long branch stub. On V5T and above, use blx |
2048 | to reach the stub if necessary. */ | |
461a49ca | 2049 | static const insn_sequence elf32_arm_stub_long_branch_any_any[] = |
906e58ca | 2050 | { |
461a49ca DJ |
2051 | ARM_INSN(0xe51ff004), /* ldr pc, [pc, #-4] */ |
2052 | DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */ | |
906e58ca NC |
2053 | }; |
2054 | ||
fea2b4d6 CL |
2055 | /* V4T Arm -> Thumb long branch stub. Used on V4T where blx is not |
2056 | available. */ | |
461a49ca | 2057 | static const insn_sequence elf32_arm_stub_long_branch_v4t_arm_thumb[] = |
906e58ca | 2058 | { |
461a49ca DJ |
2059 | ARM_INSN(0xe59fc000), /* ldr ip, [pc, #0] */ |
2060 | ARM_INSN(0xe12fff1c), /* bx ip */ | |
2061 | DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */ | |
906e58ca NC |
2062 | }; |
2063 | ||
d3626fb0 | 2064 | /* Thumb -> Thumb long branch stub. Used on M-profile architectures. */ |
461a49ca | 2065 | static const insn_sequence elf32_arm_stub_long_branch_thumb_only[] = |
906e58ca | 2066 | { |
461a49ca DJ |
2067 | THUMB16_INSN(0xb401), /* push {r0} */ |
2068 | THUMB16_INSN(0x4802), /* ldr r0, [pc, #8] */ | |
2069 | THUMB16_INSN(0x4684), /* mov ip, r0 */ | |
2070 | THUMB16_INSN(0xbc01), /* pop {r0} */ | |
2071 | THUMB16_INSN(0x4760), /* bx ip */ | |
2072 | THUMB16_INSN(0xbf00), /* nop */ | |
2073 | DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */ | |
906e58ca NC |
2074 | }; |
2075 | ||
d3626fb0 CL |
2076 | /* V4T Thumb -> Thumb long branch stub. Using the stack is not |
2077 | allowed. */ | |
2078 | static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_thumb[] = | |
2079 | { | |
2080 | THUMB16_INSN(0x4778), /* bx pc */ | |
2081 | THUMB16_INSN(0x46c0), /* nop */ | |
2082 | ARM_INSN(0xe59fc000), /* ldr ip, [pc, #0] */ | |
2083 | ARM_INSN(0xe12fff1c), /* bx ip */ | |
2084 | DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */ | |
2085 | }; | |
2086 | ||
fea2b4d6 CL |
2087 | /* V4T Thumb -> ARM long branch stub. Used on V4T where blx is not |
2088 | available. */ | |
461a49ca | 2089 | static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_arm[] = |
906e58ca | 2090 | { |
461a49ca DJ |
2091 | THUMB16_INSN(0x4778), /* bx pc */ |
2092 | THUMB16_INSN(0x46c0), /* nop */ | |
2093 | ARM_INSN(0xe51ff004), /* ldr pc, [pc, #-4] */ | |
2094 | DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */ | |
906e58ca NC |
2095 | }; |
2096 | ||
fea2b4d6 CL |
2097 | /* V4T Thumb -> ARM short branch stub. Shorter variant of the above |
2098 | one, when the destination is close enough. */ | |
461a49ca | 2099 | static const insn_sequence elf32_arm_stub_short_branch_v4t_thumb_arm[] = |
c820be07 | 2100 | { |
461a49ca DJ |
2101 | THUMB16_INSN(0x4778), /* bx pc */ |
2102 | THUMB16_INSN(0x46c0), /* nop */ | |
2103 | ARM_REL_INSN(0xea000000, -8), /* b (X-8) */ | |
c820be07 NC |
2104 | }; |
2105 | ||
cf3eccff | 2106 | /* ARM/Thumb -> ARM long branch stub, PIC. On V5T and above, use |
fea2b4d6 | 2107 | blx to reach the stub if necessary. */ |
cf3eccff | 2108 | static const insn_sequence elf32_arm_stub_long_branch_any_arm_pic[] = |
906e58ca | 2109 | { |
461a49ca DJ |
2110 | ARM_INSN(0xe59fc000), /* ldr r12, [pc] */ |
2111 | ARM_INSN(0xe08ff00c), /* add pc, pc, ip */ | |
2112 | DATA_WORD(0, R_ARM_REL32, -4), /* dcd R_ARM_REL32(X-4) */ | |
906e58ca NC |
2113 | }; |
2114 | ||
cf3eccff DJ |
2115 | /* ARM/Thumb -> Thumb long branch stub, PIC. On V5T and above, use |
2116 | blx to reach the stub if necessary. We can not add into pc; | |
2117 | it is not guaranteed to mode switch (different in ARMv6 and | |
2118 | ARMv7). */ | |
2119 | static const insn_sequence elf32_arm_stub_long_branch_any_thumb_pic[] = | |
2120 | { | |
2121 | ARM_INSN(0xe59fc004), /* ldr r12, [pc, #4] */ | |
2122 | ARM_INSN(0xe08fc00c), /* add ip, pc, ip */ | |
2123 | ARM_INSN(0xe12fff1c), /* bx ip */ | |
2124 | DATA_WORD(0, R_ARM_REL32, 0), /* dcd R_ARM_REL32(X) */ | |
2125 | }; | |
2126 | ||
ebe24dd4 CL |
2127 | /* V4T ARM -> ARM long branch stub, PIC. */ |
2128 | static const insn_sequence elf32_arm_stub_long_branch_v4t_arm_thumb_pic[] = | |
2129 | { | |
2130 | ARM_INSN(0xe59fc004), /* ldr ip, [pc, #4] */ | |
2131 | ARM_INSN(0xe08fc00c), /* add ip, pc, ip */ | |
2132 | ARM_INSN(0xe12fff1c), /* bx ip */ | |
2133 | DATA_WORD(0, R_ARM_REL32, 0), /* dcd R_ARM_REL32(X) */ | |
2134 | }; | |
2135 | ||
2136 | /* V4T Thumb -> ARM long branch stub, PIC. */ | |
2137 | static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_arm_pic[] = | |
2138 | { | |
2139 | THUMB16_INSN(0x4778), /* bx pc */ | |
2140 | THUMB16_INSN(0x46c0), /* nop */ | |
2141 | ARM_INSN(0xe59fc000), /* ldr ip, [pc, #0] */ | |
2142 | ARM_INSN(0xe08cf00f), /* add pc, ip, pc */ | |
2143 | DATA_WORD(0, R_ARM_REL32, -4), /* dcd R_ARM_REL32(X) */ | |
2144 | }; | |
2145 | ||
d3626fb0 CL |
2146 | /* Thumb -> Thumb long branch stub, PIC. Used on M-profile |
2147 | architectures. */ | |
ebe24dd4 CL |
2148 | static const insn_sequence elf32_arm_stub_long_branch_thumb_only_pic[] = |
2149 | { | |
2150 | THUMB16_INSN(0xb401), /* push {r0} */ | |
2151 | THUMB16_INSN(0x4802), /* ldr r0, [pc, #8] */ | |
2152 | THUMB16_INSN(0x46fc), /* mov ip, pc */ | |
2153 | THUMB16_INSN(0x4484), /* add ip, r0 */ | |
2154 | THUMB16_INSN(0xbc01), /* pop {r0} */ | |
2155 | THUMB16_INSN(0x4760), /* bx ip */ | |
2156 | DATA_WORD(0, R_ARM_REL32, 4), /* dcd R_ARM_REL32(X) */ | |
2157 | }; | |
2158 | ||
d3626fb0 CL |
2159 | /* V4T Thumb -> Thumb long branch stub, PIC. Using the stack is not |
2160 | allowed. */ | |
2161 | static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_thumb_pic[] = | |
2162 | { | |
2163 | THUMB16_INSN(0x4778), /* bx pc */ | |
2164 | THUMB16_INSN(0x46c0), /* nop */ | |
2165 | ARM_INSN(0xe59fc004), /* ldr ip, [pc, #4] */ | |
2166 | ARM_INSN(0xe08fc00c), /* add ip, pc, ip */ | |
2167 | ARM_INSN(0xe12fff1c), /* bx ip */ | |
2168 | DATA_WORD(0, R_ARM_REL32, 0), /* dcd R_ARM_REL32(X) */ | |
2169 | }; | |
2170 | ||
48229727 JB |
2171 | /* Cortex-A8 erratum-workaround stubs. */ |
2172 | ||
2173 | /* Stub used for conditional branches (which may be beyond +/-1MB away, so we | |
2174 | can't use a conditional branch to reach this stub). */ | |
2175 | ||
2176 | static const insn_sequence elf32_arm_stub_a8_veneer_b_cond[] = | |
2177 | { | |
2178 | THUMB16_BCOND_INSN(0xd001), /* b<cond>.n true. */ | |
2179 | THUMB32_B_INSN(0xf000b800, -4), /* b.w insn_after_original_branch. */ | |
2180 | THUMB32_B_INSN(0xf000b800, -4) /* true: b.w original_branch_dest. */ | |
2181 | }; | |
2182 | ||
2183 | /* Stub used for b.w and bl.w instructions. */ | |
2184 | ||
2185 | static const insn_sequence elf32_arm_stub_a8_veneer_b[] = | |
2186 | { | |
2187 | THUMB32_B_INSN(0xf000b800, -4) /* b.w original_branch_dest. */ | |
2188 | }; | |
2189 | ||
2190 | static const insn_sequence elf32_arm_stub_a8_veneer_bl[] = | |
2191 | { | |
2192 | THUMB32_B_INSN(0xf000b800, -4) /* b.w original_branch_dest. */ | |
2193 | }; | |
2194 | ||
2195 | /* Stub used for Thumb-2 blx.w instructions. We modified the original blx.w | |
2196 | instruction (which switches to ARM mode) to point to this stub. Jump to the | |
2197 | real destination using an ARM-mode branch. */ | |
2198 | ||
2199 | static const insn_sequence elf32_arm_stub_a8_veneer_blx[] = | |
2200 | { | |
2201 | ARM_REL_INSN(0xea000000, -8) /* b original_branch_dest. */ | |
2202 | }; | |
2203 | ||
906e58ca NC |
2204 | /* Section name for stubs is the associated section name plus this |
2205 | string. */ | |
2206 | #define STUB_SUFFIX ".stub" | |
2207 | ||
738a79f6 CL |
2208 | /* One entry per long/short branch stub defined above. */ |
2209 | #define DEF_STUBS \ | |
2210 | DEF_STUB(long_branch_any_any) \ | |
2211 | DEF_STUB(long_branch_v4t_arm_thumb) \ | |
2212 | DEF_STUB(long_branch_thumb_only) \ | |
2213 | DEF_STUB(long_branch_v4t_thumb_thumb) \ | |
2214 | DEF_STUB(long_branch_v4t_thumb_arm) \ | |
2215 | DEF_STUB(short_branch_v4t_thumb_arm) \ | |
2216 | DEF_STUB(long_branch_any_arm_pic) \ | |
2217 | DEF_STUB(long_branch_any_thumb_pic) \ | |
2218 | DEF_STUB(long_branch_v4t_thumb_thumb_pic) \ | |
2219 | DEF_STUB(long_branch_v4t_arm_thumb_pic) \ | |
2220 | DEF_STUB(long_branch_v4t_thumb_arm_pic) \ | |
48229727 JB |
2221 | DEF_STUB(long_branch_thumb_only_pic) \ |
2222 | DEF_STUB(a8_veneer_b_cond) \ | |
2223 | DEF_STUB(a8_veneer_b) \ | |
2224 | DEF_STUB(a8_veneer_bl) \ | |
2225 | DEF_STUB(a8_veneer_blx) | |
738a79f6 CL |
2226 | |
2227 | #define DEF_STUB(x) arm_stub_##x, | |
2228 | enum elf32_arm_stub_type { | |
906e58ca | 2229 | arm_stub_none, |
738a79f6 CL |
2230 | DEF_STUBS |
2231 | }; | |
2232 | #undef DEF_STUB | |
2233 | ||
2234 | typedef struct | |
2235 | { | |
2236 | const insn_sequence* template; | |
2237 | int template_size; | |
2238 | } stub_def; | |
2239 | ||
2240 | #define DEF_STUB(x) {elf32_arm_stub_##x, ARRAY_SIZE(elf32_arm_stub_##x)}, | |
2241 | static const stub_def stub_definitions[] = { | |
2242 | {NULL, 0}, | |
2243 | DEF_STUBS | |
906e58ca NC |
2244 | }; |
2245 | ||
2246 | struct elf32_arm_stub_hash_entry | |
2247 | { | |
2248 | /* Base hash table entry structure. */ | |
2249 | struct bfd_hash_entry root; | |
2250 | ||
2251 | /* The stub section. */ | |
2252 | asection *stub_sec; | |
2253 | ||
2254 | /* Offset within stub_sec of the beginning of this stub. */ | |
2255 | bfd_vma stub_offset; | |
2256 | ||
2257 | /* Given the symbol's value and its section we can determine its final | |
2258 | value when building the stubs (so the stub knows where to jump). */ | |
2259 | bfd_vma target_value; | |
2260 | asection *target_section; | |
2261 | ||
48229727 JB |
2262 | /* Offset to apply to relocation referencing target_value. */ |
2263 | bfd_vma target_addend; | |
2264 | ||
2265 | /* The instruction which caused this stub to be generated (only valid for | |
2266 | Cortex-A8 erratum workaround stubs at present). */ | |
2267 | unsigned long orig_insn; | |
2268 | ||
461a49ca | 2269 | /* The stub type. */ |
906e58ca | 2270 | enum elf32_arm_stub_type stub_type; |
461a49ca DJ |
2271 | /* Its encoding size in bytes. */ |
2272 | int stub_size; | |
2273 | /* Its template. */ | |
2274 | const insn_sequence *stub_template; | |
2275 | /* The size of the template (number of entries). */ | |
2276 | int stub_template_size; | |
906e58ca NC |
2277 | |
2278 | /* The symbol table entry, if any, that this was derived from. */ | |
2279 | struct elf32_arm_link_hash_entry *h; | |
2280 | ||
2281 | /* Destination symbol type (STT_ARM_TFUNC, ...) */ | |
2282 | unsigned char st_type; | |
2283 | ||
2284 | /* Where this stub is being called from, or, in the case of combined | |
2285 | stub sections, the first input section in the group. */ | |
2286 | asection *id_sec; | |
7413f23f DJ |
2287 | |
2288 | /* The name for the local symbol at the start of this stub. The | |
2289 | stub name in the hash table has to be unique; this does not, so | |
2290 | it can be friendlier. */ | |
2291 | char *output_name; | |
906e58ca NC |
2292 | }; |
2293 | ||
e489d0ae PB |
2294 | /* Used to build a map of a section. This is required for mixed-endian |
2295 | code/data. */ | |
2296 | ||
2297 | typedef struct elf32_elf_section_map | |
2298 | { | |
2299 | bfd_vma vma; | |
2300 | char type; | |
2301 | } | |
2302 | elf32_arm_section_map; | |
2303 | ||
c7b8f16e JB |
2304 | /* Information about a VFP11 erratum veneer, or a branch to such a veneer. */ |
2305 | ||
2306 | typedef enum | |
2307 | { | |
2308 | VFP11_ERRATUM_BRANCH_TO_ARM_VENEER, | |
2309 | VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER, | |
2310 | VFP11_ERRATUM_ARM_VENEER, | |
2311 | VFP11_ERRATUM_THUMB_VENEER | |
2312 | } | |
2313 | elf32_vfp11_erratum_type; | |
2314 | ||
2315 | typedef struct elf32_vfp11_erratum_list | |
2316 | { | |
2317 | struct elf32_vfp11_erratum_list *next; | |
2318 | bfd_vma vma; | |
2319 | union | |
2320 | { | |
2321 | struct | |
2322 | { | |
2323 | struct elf32_vfp11_erratum_list *veneer; | |
2324 | unsigned int vfp_insn; | |
2325 | } b; | |
2326 | struct | |
2327 | { | |
2328 | struct elf32_vfp11_erratum_list *branch; | |
2329 | unsigned int id; | |
2330 | } v; | |
2331 | } u; | |
2332 | elf32_vfp11_erratum_type type; | |
2333 | } | |
2334 | elf32_vfp11_erratum_list; | |
2335 | ||
2468f9c9 PB |
2336 | typedef enum |
2337 | { | |
2338 | DELETE_EXIDX_ENTRY, | |
2339 | INSERT_EXIDX_CANTUNWIND_AT_END | |
2340 | } | |
2341 | arm_unwind_edit_type; | |
2342 | ||
2343 | /* A (sorted) list of edits to apply to an unwind table. */ | |
2344 | typedef struct arm_unwind_table_edit | |
2345 | { | |
2346 | arm_unwind_edit_type type; | |
2347 | /* Note: we sometimes want to insert an unwind entry corresponding to a | |
2348 | section different from the one we're currently writing out, so record the | |
2349 | (text) section this edit relates to here. */ | |
2350 | asection *linked_section; | |
2351 | unsigned int index; | |
2352 | struct arm_unwind_table_edit *next; | |
2353 | } | |
2354 | arm_unwind_table_edit; | |
2355 | ||
8e3de13a | 2356 | typedef struct _arm_elf_section_data |
e489d0ae | 2357 | { |
2468f9c9 | 2358 | /* Information about mapping symbols. */ |
e489d0ae | 2359 | struct bfd_elf_section_data elf; |
8e3de13a | 2360 | unsigned int mapcount; |
c7b8f16e | 2361 | unsigned int mapsize; |
e489d0ae | 2362 | elf32_arm_section_map *map; |
2468f9c9 | 2363 | /* Information about CPU errata. */ |
c7b8f16e JB |
2364 | unsigned int erratumcount; |
2365 | elf32_vfp11_erratum_list *erratumlist; | |
2468f9c9 PB |
2366 | /* Information about unwind tables. */ |
2367 | union | |
2368 | { | |
2369 | /* Unwind info attached to a text section. */ | |
2370 | struct | |
2371 | { | |
2372 | asection *arm_exidx_sec; | |
2373 | } text; | |
2374 | ||
2375 | /* Unwind info attached to an .ARM.exidx section. */ | |
2376 | struct | |
2377 | { | |
2378 | arm_unwind_table_edit *unwind_edit_list; | |
2379 | arm_unwind_table_edit *unwind_edit_tail; | |
2380 | } exidx; | |
2381 | } u; | |
8e3de13a NC |
2382 | } |
2383 | _arm_elf_section_data; | |
e489d0ae PB |
2384 | |
2385 | #define elf32_arm_section_data(sec) \ | |
8e3de13a | 2386 | ((_arm_elf_section_data *) elf_section_data (sec)) |
e489d0ae | 2387 | |
48229727 JB |
2388 | /* A fix which might be required for Cortex-A8 Thumb-2 branch/TLB erratum. |
2389 | These fixes are subject to a relaxation procedure (in elf32_arm_size_stubs), | |
2390 | so may be created multiple times: we use an array of these entries whilst | |
2391 | relaxing which we can refresh easily, then create stubs for each potentially | |
2392 | erratum-triggering instruction once we've settled on a solution. */ | |
2393 | ||
2394 | struct a8_erratum_fix { | |
2395 | bfd *input_bfd; | |
2396 | asection *section; | |
2397 | bfd_vma offset; | |
2398 | bfd_vma addend; | |
2399 | unsigned long orig_insn; | |
2400 | char *stub_name; | |
2401 | enum elf32_arm_stub_type stub_type; | |
2402 | }; | |
2403 | ||
2404 | /* A table of relocs applied to branches which might trigger Cortex-A8 | |
2405 | erratum. */ | |
2406 | ||
2407 | struct a8_erratum_reloc { | |
2408 | bfd_vma from; | |
2409 | bfd_vma destination; | |
2410 | unsigned int r_type; | |
2411 | unsigned char st_type; | |
2412 | const char *sym_name; | |
2413 | bfd_boolean non_a8_stub; | |
2414 | }; | |
2415 | ||
ba93b8ac DJ |
2416 | /* The size of the thread control block. */ |
2417 | #define TCB_SIZE 8 | |
2418 | ||
0ffa91dd | 2419 | struct elf_arm_obj_tdata |
ba93b8ac DJ |
2420 | { |
2421 | struct elf_obj_tdata root; | |
2422 | ||
2423 | /* tls_type for each local got entry. */ | |
2424 | char *local_got_tls_type; | |
ee065d83 | 2425 | |
bf21ed78 MS |
2426 | /* Zero to warn when linking objects with incompatible enum sizes. */ |
2427 | int no_enum_size_warning; | |
a9dc9481 JM |
2428 | |
2429 | /* Zero to warn when linking objects with incompatible wchar_t sizes. */ | |
2430 | int no_wchar_size_warning; | |
ba93b8ac DJ |
2431 | }; |
2432 | ||
0ffa91dd NC |
2433 | #define elf_arm_tdata(bfd) \ |
2434 | ((struct elf_arm_obj_tdata *) (bfd)->tdata.any) | |
ba93b8ac | 2435 | |
0ffa91dd NC |
2436 | #define elf32_arm_local_got_tls_type(bfd) \ |
2437 | (elf_arm_tdata (bfd)->local_got_tls_type) | |
2438 | ||
2439 | #define is_arm_elf(bfd) \ | |
2440 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
2441 | && elf_tdata (bfd) != NULL \ | |
2442 | && elf_object_id (bfd) == ARM_ELF_TDATA) | |
ba93b8ac DJ |
2443 | |
2444 | static bfd_boolean | |
2445 | elf32_arm_mkobject (bfd *abfd) | |
2446 | { | |
0ffa91dd NC |
2447 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_arm_obj_tdata), |
2448 | ARM_ELF_TDATA); | |
ba93b8ac DJ |
2449 | } |
2450 | ||
252b5132 RH |
2451 | /* The ARM linker needs to keep track of the number of relocs that it |
2452 | decides to copy in check_relocs for each symbol. This is so that | |
2453 | it can discard PC relative relocs if it doesn't need them when | |
2454 | linking with -Bsymbolic. We store the information in a field | |
2455 | extending the regular ELF linker hash table. */ | |
2456 | ||
ba93b8ac DJ |
2457 | /* This structure keeps track of the number of relocs we have copied |
2458 | for a given symbol. */ | |
5e681ec4 | 2459 | struct elf32_arm_relocs_copied |
917583ad NC |
2460 | { |
2461 | /* Next section. */ | |
5e681ec4 | 2462 | struct elf32_arm_relocs_copied * next; |
917583ad NC |
2463 | /* A section in dynobj. */ |
2464 | asection * section; | |
2465 | /* Number of relocs copied in this section. */ | |
2466 | bfd_size_type count; | |
ba93b8ac DJ |
2467 | /* Number of PC-relative relocs copied in this section. */ |
2468 | bfd_size_type pc_count; | |
917583ad | 2469 | }; |
252b5132 | 2470 | |
ba93b8ac DJ |
2471 | #define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent)) |
2472 | ||
ba96a88f | 2473 | /* Arm ELF linker hash entry. */ |
252b5132 | 2474 | struct elf32_arm_link_hash_entry |
917583ad NC |
2475 | { |
2476 | struct elf_link_hash_entry root; | |
252b5132 | 2477 | |
917583ad | 2478 | /* Number of PC relative relocs copied for this symbol. */ |
5e681ec4 | 2479 | struct elf32_arm_relocs_copied * relocs_copied; |
b7693d02 DJ |
2480 | |
2481 | /* We reference count Thumb references to a PLT entry separately, | |
2482 | so that we can emit the Thumb trampoline only if needed. */ | |
2483 | bfd_signed_vma plt_thumb_refcount; | |
2484 | ||
bd97cb95 DJ |
2485 | /* Some references from Thumb code may be eliminated by BL->BLX |
2486 | conversion, so record them separately. */ | |
2487 | bfd_signed_vma plt_maybe_thumb_refcount; | |
2488 | ||
b7693d02 DJ |
2489 | /* Since PLT entries have variable size if the Thumb prologue is |
2490 | used, we need to record the index into .got.plt instead of | |
2491 | recomputing it from the PLT offset. */ | |
2492 | bfd_signed_vma plt_got_offset; | |
ba93b8ac DJ |
2493 | |
2494 | #define GOT_UNKNOWN 0 | |
2495 | #define GOT_NORMAL 1 | |
2496 | #define GOT_TLS_GD 2 | |
2497 | #define GOT_TLS_IE 4 | |
2498 | unsigned char tls_type; | |
a4fd1a8e PB |
2499 | |
2500 | /* The symbol marking the real symbol location for exported thumb | |
2501 | symbols with Arm stubs. */ | |
2502 | struct elf_link_hash_entry *export_glue; | |
906e58ca | 2503 | |
da5938a2 | 2504 | /* A pointer to the most recently used stub hash entry against this |
8029a119 | 2505 | symbol. */ |
da5938a2 | 2506 | struct elf32_arm_stub_hash_entry *stub_cache; |
917583ad | 2507 | }; |
252b5132 | 2508 | |
252b5132 | 2509 | /* Traverse an arm ELF linker hash table. */ |
252b5132 RH |
2510 | #define elf32_arm_link_hash_traverse(table, func, info) \ |
2511 | (elf_link_hash_traverse \ | |
2512 | (&(table)->root, \ | |
b7693d02 | 2513 | (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
252b5132 RH |
2514 | (info))) |
2515 | ||
2516 | /* Get the ARM elf linker hash table from a link_info structure. */ | |
2517 | #define elf32_arm_hash_table(info) \ | |
2518 | ((struct elf32_arm_link_hash_table *) ((info)->hash)) | |
2519 | ||
906e58ca NC |
2520 | #define arm_stub_hash_lookup(table, string, create, copy) \ |
2521 | ((struct elf32_arm_stub_hash_entry *) \ | |
2522 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
2523 | ||
9b485d32 | 2524 | /* ARM ELF linker hash table. */ |
252b5132 | 2525 | struct elf32_arm_link_hash_table |
906e58ca NC |
2526 | { |
2527 | /* The main hash table. */ | |
2528 | struct elf_link_hash_table root; | |
252b5132 | 2529 | |
906e58ca NC |
2530 | /* The size in bytes of the section containing the Thumb-to-ARM glue. */ |
2531 | bfd_size_type thumb_glue_size; | |
252b5132 | 2532 | |
906e58ca NC |
2533 | /* The size in bytes of the section containing the ARM-to-Thumb glue. */ |
2534 | bfd_size_type arm_glue_size; | |
252b5132 | 2535 | |
906e58ca NC |
2536 | /* The size in bytes of section containing the ARMv4 BX veneers. */ |
2537 | bfd_size_type bx_glue_size; | |
845b51d6 | 2538 | |
906e58ca NC |
2539 | /* Offsets of ARMv4 BX veneers. Bit1 set if present, and Bit0 set when |
2540 | veneer has been populated. */ | |
2541 | bfd_vma bx_glue_offset[15]; | |
845b51d6 | 2542 | |
906e58ca NC |
2543 | /* The size in bytes of the section containing glue for VFP11 erratum |
2544 | veneers. */ | |
2545 | bfd_size_type vfp11_erratum_glue_size; | |
c7b8f16e | 2546 | |
48229727 JB |
2547 | /* A table of fix locations for Cortex-A8 Thumb-2 branch/TLB erratum. This |
2548 | holds Cortex-A8 erratum fix locations between elf32_arm_size_stubs() and | |
2549 | elf32_arm_write_section(). */ | |
2550 | struct a8_erratum_fix *a8_erratum_fixes; | |
2551 | unsigned int num_a8_erratum_fixes; | |
2552 | ||
906e58ca NC |
2553 | /* An arbitrary input BFD chosen to hold the glue sections. */ |
2554 | bfd * bfd_of_glue_owner; | |
ba96a88f | 2555 | |
906e58ca NC |
2556 | /* Nonzero to output a BE8 image. */ |
2557 | int byteswap_code; | |
e489d0ae | 2558 | |
906e58ca NC |
2559 | /* Zero if R_ARM_TARGET1 means R_ARM_ABS32. |
2560 | Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */ | |
2561 | int target1_is_rel; | |
9c504268 | 2562 | |
906e58ca NC |
2563 | /* The relocation to use for R_ARM_TARGET2 relocations. */ |
2564 | int target2_reloc; | |
eb043451 | 2565 | |
906e58ca NC |
2566 | /* 0 = Ignore R_ARM_V4BX. |
2567 | 1 = Convert BX to MOV PC. | |
2568 | 2 = Generate v4 interworing stubs. */ | |
2569 | int fix_v4bx; | |
319850b4 | 2570 | |
48229727 JB |
2571 | /* Whether we should fix the Cortex-A8 Thumb-2 branch/TLB erratum. */ |
2572 | int fix_cortex_a8; | |
2573 | ||
906e58ca NC |
2574 | /* Nonzero if the ARM/Thumb BLX instructions are available for use. */ |
2575 | int use_blx; | |
33bfe774 | 2576 | |
906e58ca NC |
2577 | /* What sort of code sequences we should look for which may trigger the |
2578 | VFP11 denorm erratum. */ | |
2579 | bfd_arm_vfp11_fix vfp11_fix; | |
c7b8f16e | 2580 | |
906e58ca NC |
2581 | /* Global counter for the number of fixes we have emitted. */ |
2582 | int num_vfp11_fixes; | |
c7b8f16e | 2583 | |
906e58ca NC |
2584 | /* Nonzero to force PIC branch veneers. */ |
2585 | int pic_veneer; | |
27e55c4d | 2586 | |
906e58ca NC |
2587 | /* The number of bytes in the initial entry in the PLT. */ |
2588 | bfd_size_type plt_header_size; | |
e5a52504 | 2589 | |
906e58ca NC |
2590 | /* The number of bytes in the subsequent PLT etries. */ |
2591 | bfd_size_type plt_entry_size; | |
e5a52504 | 2592 | |
906e58ca NC |
2593 | /* True if the target system is VxWorks. */ |
2594 | int vxworks_p; | |
00a97672 | 2595 | |
906e58ca NC |
2596 | /* True if the target system is Symbian OS. */ |
2597 | int symbian_p; | |
e5a52504 | 2598 | |
906e58ca NC |
2599 | /* True if the target uses REL relocations. */ |
2600 | int use_rel; | |
4e7fd91e | 2601 | |
906e58ca NC |
2602 | /* Short-cuts to get to dynamic linker sections. */ |
2603 | asection *sgot; | |
2604 | asection *sgotplt; | |
2605 | asection *srelgot; | |
2606 | asection *splt; | |
2607 | asection *srelplt; | |
2608 | asection *sdynbss; | |
2609 | asection *srelbss; | |
5e681ec4 | 2610 | |
906e58ca NC |
2611 | /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */ |
2612 | asection *srelplt2; | |
00a97672 | 2613 | |
906e58ca NC |
2614 | /* Data for R_ARM_TLS_LDM32 relocations. */ |
2615 | union | |
2616 | { | |
2617 | bfd_signed_vma refcount; | |
2618 | bfd_vma offset; | |
2619 | } tls_ldm_got; | |
b7693d02 | 2620 | |
906e58ca NC |
2621 | /* Small local sym to section mapping cache. */ |
2622 | struct sym_sec_cache sym_sec; | |
2623 | ||
2624 | /* For convenience in allocate_dynrelocs. */ | |
2625 | bfd * obfd; | |
2626 | ||
2627 | /* The stub hash table. */ | |
2628 | struct bfd_hash_table stub_hash_table; | |
2629 | ||
2630 | /* Linker stub bfd. */ | |
2631 | bfd *stub_bfd; | |
2632 | ||
2633 | /* Linker call-backs. */ | |
2634 | asection * (*add_stub_section) (const char *, asection *); | |
2635 | void (*layout_sections_again) (void); | |
2636 | ||
2637 | /* Array to keep track of which stub sections have been created, and | |
2638 | information on stub grouping. */ | |
2639 | struct map_stub | |
2640 | { | |
2641 | /* This is the section to which stubs in the group will be | |
2642 | attached. */ | |
2643 | asection *link_sec; | |
2644 | /* The stub section. */ | |
2645 | asection *stub_sec; | |
2646 | } *stub_group; | |
2647 | ||
2648 | /* Assorted information used by elf32_arm_size_stubs. */ | |
2649 | unsigned int bfd_count; | |
2650 | int top_index; | |
2651 | asection **input_list; | |
2652 | }; | |
252b5132 | 2653 | |
780a67af NC |
2654 | /* Create an entry in an ARM ELF linker hash table. */ |
2655 | ||
2656 | static struct bfd_hash_entry * | |
57e8b36a NC |
2657 | elf32_arm_link_hash_newfunc (struct bfd_hash_entry * entry, |
2658 | struct bfd_hash_table * table, | |
2659 | const char * string) | |
780a67af NC |
2660 | { |
2661 | struct elf32_arm_link_hash_entry * ret = | |
2662 | (struct elf32_arm_link_hash_entry *) entry; | |
2663 | ||
2664 | /* Allocate the structure if it has not already been allocated by a | |
2665 | subclass. */ | |
906e58ca | 2666 | if (ret == NULL) |
57e8b36a NC |
2667 | ret = bfd_hash_allocate (table, sizeof (struct elf32_arm_link_hash_entry)); |
2668 | if (ret == NULL) | |
780a67af NC |
2669 | return (struct bfd_hash_entry *) ret; |
2670 | ||
2671 | /* Call the allocation method of the superclass. */ | |
2672 | ret = ((struct elf32_arm_link_hash_entry *) | |
2673 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
2674 | table, string)); | |
57e8b36a | 2675 | if (ret != NULL) |
b7693d02 DJ |
2676 | { |
2677 | ret->relocs_copied = NULL; | |
ba93b8ac | 2678 | ret->tls_type = GOT_UNKNOWN; |
b7693d02 | 2679 | ret->plt_thumb_refcount = 0; |
bd97cb95 | 2680 | ret->plt_maybe_thumb_refcount = 0; |
b7693d02 | 2681 | ret->plt_got_offset = -1; |
a4fd1a8e | 2682 | ret->export_glue = NULL; |
906e58ca NC |
2683 | |
2684 | ret->stub_cache = NULL; | |
b7693d02 | 2685 | } |
780a67af NC |
2686 | |
2687 | return (struct bfd_hash_entry *) ret; | |
2688 | } | |
2689 | ||
906e58ca NC |
2690 | /* Initialize an entry in the stub hash table. */ |
2691 | ||
2692 | static struct bfd_hash_entry * | |
2693 | stub_hash_newfunc (struct bfd_hash_entry *entry, | |
2694 | struct bfd_hash_table *table, | |
2695 | const char *string) | |
2696 | { | |
2697 | /* Allocate the structure if it has not already been allocated by a | |
2698 | subclass. */ | |
2699 | if (entry == NULL) | |
2700 | { | |
2701 | entry = bfd_hash_allocate (table, | |
2702 | sizeof (struct elf32_arm_stub_hash_entry)); | |
2703 | if (entry == NULL) | |
2704 | return entry; | |
2705 | } | |
2706 | ||
2707 | /* Call the allocation method of the superclass. */ | |
2708 | entry = bfd_hash_newfunc (entry, table, string); | |
2709 | if (entry != NULL) | |
2710 | { | |
2711 | struct elf32_arm_stub_hash_entry *eh; | |
2712 | ||
2713 | /* Initialize the local fields. */ | |
2714 | eh = (struct elf32_arm_stub_hash_entry *) entry; | |
2715 | eh->stub_sec = NULL; | |
2716 | eh->stub_offset = 0; | |
2717 | eh->target_value = 0; | |
2718 | eh->target_section = NULL; | |
2719 | eh->stub_type = arm_stub_none; | |
461a49ca DJ |
2720 | eh->stub_size = 0; |
2721 | eh->stub_template = NULL; | |
2722 | eh->stub_template_size = 0; | |
906e58ca NC |
2723 | eh->h = NULL; |
2724 | eh->id_sec = NULL; | |
2725 | } | |
2726 | ||
2727 | return entry; | |
2728 | } | |
2729 | ||
00a97672 | 2730 | /* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up |
5e681ec4 PB |
2731 | shortcuts to them in our hash table. */ |
2732 | ||
2733 | static bfd_boolean | |
57e8b36a | 2734 | create_got_section (bfd *dynobj, struct bfd_link_info *info) |
5e681ec4 PB |
2735 | { |
2736 | struct elf32_arm_link_hash_table *htab; | |
2737 | ||
e5a52504 MM |
2738 | htab = elf32_arm_hash_table (info); |
2739 | /* BPABI objects never have a GOT, or associated sections. */ | |
2740 | if (htab->symbian_p) | |
2741 | return TRUE; | |
2742 | ||
5e681ec4 PB |
2743 | if (! _bfd_elf_create_got_section (dynobj, info)) |
2744 | return FALSE; | |
2745 | ||
5e681ec4 PB |
2746 | htab->sgot = bfd_get_section_by_name (dynobj, ".got"); |
2747 | htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
2748 | if (!htab->sgot || !htab->sgotplt) | |
2749 | abort (); | |
2750 | ||
00a97672 RS |
2751 | htab->srelgot = bfd_make_section_with_flags (dynobj, |
2752 | RELOC_SECTION (htab, ".got"), | |
3496cb2a L |
2753 | (SEC_ALLOC | SEC_LOAD |
2754 | | SEC_HAS_CONTENTS | |
2755 | | SEC_IN_MEMORY | |
2756 | | SEC_LINKER_CREATED | |
2757 | | SEC_READONLY)); | |
5e681ec4 | 2758 | if (htab->srelgot == NULL |
5e681ec4 PB |
2759 | || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2)) |
2760 | return FALSE; | |
2761 | return TRUE; | |
2762 | } | |
2763 | ||
00a97672 RS |
2764 | /* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and |
2765 | .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our | |
5e681ec4 PB |
2766 | hash table. */ |
2767 | ||
2768 | static bfd_boolean | |
57e8b36a | 2769 | elf32_arm_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5e681ec4 PB |
2770 | { |
2771 | struct elf32_arm_link_hash_table *htab; | |
2772 | ||
2773 | htab = elf32_arm_hash_table (info); | |
2774 | if (!htab->sgot && !create_got_section (dynobj, info)) | |
2775 | return FALSE; | |
2776 | ||
2777 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
2778 | return FALSE; | |
2779 | ||
2780 | htab->splt = bfd_get_section_by_name (dynobj, ".plt"); | |
00a97672 RS |
2781 | htab->srelplt = bfd_get_section_by_name (dynobj, |
2782 | RELOC_SECTION (htab, ".plt")); | |
5e681ec4 PB |
2783 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); |
2784 | if (!info->shared) | |
00a97672 RS |
2785 | htab->srelbss = bfd_get_section_by_name (dynobj, |
2786 | RELOC_SECTION (htab, ".bss")); | |
2787 | ||
2788 | if (htab->vxworks_p) | |
2789 | { | |
2790 | if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2)) | |
2791 | return FALSE; | |
2792 | ||
2793 | if (info->shared) | |
2794 | { | |
2795 | htab->plt_header_size = 0; | |
2796 | htab->plt_entry_size | |
2797 | = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry); | |
2798 | } | |
2799 | else | |
2800 | { | |
2801 | htab->plt_header_size | |
2802 | = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry); | |
2803 | htab->plt_entry_size | |
2804 | = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry); | |
2805 | } | |
2806 | } | |
5e681ec4 | 2807 | |
906e58ca | 2808 | if (!htab->splt |
e5a52504 MM |
2809 | || !htab->srelplt |
2810 | || !htab->sdynbss | |
5e681ec4 PB |
2811 | || (!info->shared && !htab->srelbss)) |
2812 | abort (); | |
2813 | ||
2814 | return TRUE; | |
2815 | } | |
2816 | ||
906e58ca NC |
2817 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
2818 | ||
2819 | static void | |
2820 | elf32_arm_copy_indirect_symbol (struct bfd_link_info *info, | |
2821 | struct elf_link_hash_entry *dir, | |
2822 | struct elf_link_hash_entry *ind) | |
2823 | { | |
2824 | struct elf32_arm_link_hash_entry *edir, *eind; | |
2825 | ||
2826 | edir = (struct elf32_arm_link_hash_entry *) dir; | |
2827 | eind = (struct elf32_arm_link_hash_entry *) ind; | |
2828 | ||
2829 | if (eind->relocs_copied != NULL) | |
2830 | { | |
2831 | if (edir->relocs_copied != NULL) | |
2832 | { | |
2833 | struct elf32_arm_relocs_copied **pp; | |
2834 | struct elf32_arm_relocs_copied *p; | |
2835 | ||
2836 | /* Add reloc counts against the indirect sym to the direct sym | |
2837 | list. Merge any entries against the same section. */ | |
2838 | for (pp = &eind->relocs_copied; (p = *pp) != NULL; ) | |
2839 | { | |
2840 | struct elf32_arm_relocs_copied *q; | |
2841 | ||
2842 | for (q = edir->relocs_copied; q != NULL; q = q->next) | |
2843 | if (q->section == p->section) | |
2844 | { | |
2845 | q->pc_count += p->pc_count; | |
2846 | q->count += p->count; | |
2847 | *pp = p->next; | |
2848 | break; | |
2849 | } | |
2850 | if (q == NULL) | |
2851 | pp = &p->next; | |
2852 | } | |
2853 | *pp = edir->relocs_copied; | |
2854 | } | |
2855 | ||
2856 | edir->relocs_copied = eind->relocs_copied; | |
2857 | eind->relocs_copied = NULL; | |
2858 | } | |
2859 | ||
2860 | if (ind->root.type == bfd_link_hash_indirect) | |
2861 | { | |
2862 | /* Copy over PLT info. */ | |
2863 | edir->plt_thumb_refcount += eind->plt_thumb_refcount; | |
2864 | eind->plt_thumb_refcount = 0; | |
2865 | edir->plt_maybe_thumb_refcount += eind->plt_maybe_thumb_refcount; | |
2866 | eind->plt_maybe_thumb_refcount = 0; | |
2867 | ||
2868 | if (dir->got.refcount <= 0) | |
2869 | { | |
2870 | edir->tls_type = eind->tls_type; | |
2871 | eind->tls_type = GOT_UNKNOWN; | |
2872 | } | |
2873 | } | |
2874 | ||
2875 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
2876 | } | |
2877 | ||
2878 | /* Create an ARM elf linker hash table. */ | |
2879 | ||
2880 | static struct bfd_link_hash_table * | |
2881 | elf32_arm_link_hash_table_create (bfd *abfd) | |
2882 | { | |
2883 | struct elf32_arm_link_hash_table *ret; | |
2884 | bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table); | |
2885 | ||
2886 | ret = bfd_malloc (amt); | |
2887 | if (ret == NULL) | |
2888 | return NULL; | |
2889 | ||
2890 | if (!_bfd_elf_link_hash_table_init (& ret->root, abfd, | |
2891 | elf32_arm_link_hash_newfunc, | |
2892 | sizeof (struct elf32_arm_link_hash_entry))) | |
2893 | { | |
2894 | free (ret); | |
2895 | return NULL; | |
2896 | } | |
2897 | ||
2898 | ret->sgot = NULL; | |
2899 | ret->sgotplt = NULL; | |
2900 | ret->srelgot = NULL; | |
2901 | ret->splt = NULL; | |
2902 | ret->srelplt = NULL; | |
2903 | ret->sdynbss = NULL; | |
2904 | ret->srelbss = NULL; | |
2905 | ret->srelplt2 = NULL; | |
2906 | ret->thumb_glue_size = 0; | |
2907 | ret->arm_glue_size = 0; | |
2908 | ret->bx_glue_size = 0; | |
2909 | memset (ret->bx_glue_offset, 0, sizeof (ret->bx_glue_offset)); | |
2910 | ret->vfp11_fix = BFD_ARM_VFP11_FIX_NONE; | |
2911 | ret->vfp11_erratum_glue_size = 0; | |
2912 | ret->num_vfp11_fixes = 0; | |
48229727 | 2913 | ret->fix_cortex_a8 = 0; |
906e58ca NC |
2914 | ret->bfd_of_glue_owner = NULL; |
2915 | ret->byteswap_code = 0; | |
2916 | ret->target1_is_rel = 0; | |
2917 | ret->target2_reloc = R_ARM_NONE; | |
2918 | #ifdef FOUR_WORD_PLT | |
2919 | ret->plt_header_size = 16; | |
2920 | ret->plt_entry_size = 16; | |
2921 | #else | |
2922 | ret->plt_header_size = 20; | |
2923 | ret->plt_entry_size = 12; | |
2924 | #endif | |
2925 | ret->fix_v4bx = 0; | |
2926 | ret->use_blx = 0; | |
2927 | ret->vxworks_p = 0; | |
2928 | ret->symbian_p = 0; | |
2929 | ret->use_rel = 1; | |
2930 | ret->sym_sec.abfd = NULL; | |
2931 | ret->obfd = abfd; | |
2932 | ret->tls_ldm_got.refcount = 0; | |
6cee0a6f L |
2933 | ret->stub_bfd = NULL; |
2934 | ret->add_stub_section = NULL; | |
2935 | ret->layout_sections_again = NULL; | |
2936 | ret->stub_group = NULL; | |
2937 | ret->bfd_count = 0; | |
2938 | ret->top_index = 0; | |
2939 | ret->input_list = NULL; | |
906e58ca NC |
2940 | |
2941 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc, | |
2942 | sizeof (struct elf32_arm_stub_hash_entry))) | |
2943 | { | |
2944 | free (ret); | |
2945 | return NULL; | |
2946 | } | |
2947 | ||
2948 | return &ret->root.root; | |
2949 | } | |
2950 | ||
2951 | /* Free the derived linker hash table. */ | |
2952 | ||
2953 | static void | |
2954 | elf32_arm_hash_table_free (struct bfd_link_hash_table *hash) | |
2955 | { | |
2956 | struct elf32_arm_link_hash_table *ret | |
2957 | = (struct elf32_arm_link_hash_table *) hash; | |
2958 | ||
2959 | bfd_hash_table_free (&ret->stub_hash_table); | |
2960 | _bfd_generic_link_hash_table_free (hash); | |
2961 | } | |
2962 | ||
2963 | /* Determine if we're dealing with a Thumb only architecture. */ | |
2964 | ||
2965 | static bfd_boolean | |
2966 | using_thumb_only (struct elf32_arm_link_hash_table *globals) | |
2967 | { | |
2968 | int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, | |
2969 | Tag_CPU_arch); | |
2970 | int profile; | |
2971 | ||
2972 | if (arch != TAG_CPU_ARCH_V7) | |
2973 | return FALSE; | |
2974 | ||
2975 | profile = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, | |
2976 | Tag_CPU_arch_profile); | |
2977 | ||
2978 | return profile == 'M'; | |
2979 | } | |
2980 | ||
2981 | /* Determine if we're dealing with a Thumb-2 object. */ | |
2982 | ||
2983 | static bfd_boolean | |
2984 | using_thumb2 (struct elf32_arm_link_hash_table *globals) | |
2985 | { | |
2986 | int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, | |
2987 | Tag_CPU_arch); | |
2988 | return arch == TAG_CPU_ARCH_V6T2 || arch >= TAG_CPU_ARCH_V7; | |
2989 | } | |
2990 | ||
f4ac8484 DJ |
2991 | static bfd_boolean |
2992 | arm_stub_is_thumb (enum elf32_arm_stub_type stub_type) | |
2993 | { | |
2994 | switch (stub_type) | |
2995 | { | |
fea2b4d6 CL |
2996 | case arm_stub_long_branch_thumb_only: |
2997 | case arm_stub_long_branch_v4t_thumb_arm: | |
2998 | case arm_stub_short_branch_v4t_thumb_arm: | |
ebe24dd4 CL |
2999 | case arm_stub_long_branch_v4t_thumb_arm_pic: |
3000 | case arm_stub_long_branch_thumb_only_pic: | |
f4ac8484 DJ |
3001 | return TRUE; |
3002 | case arm_stub_none: | |
3003 | BFD_FAIL (); | |
3004 | return FALSE; | |
3005 | break; | |
3006 | default: | |
3007 | return FALSE; | |
3008 | } | |
3009 | } | |
3010 | ||
906e58ca NC |
3011 | /* Determine the type of stub needed, if any, for a call. */ |
3012 | ||
3013 | static enum elf32_arm_stub_type | |
3014 | arm_type_of_stub (struct bfd_link_info *info, | |
3015 | asection *input_sec, | |
3016 | const Elf_Internal_Rela *rel, | |
3017 | unsigned char st_type, | |
3018 | struct elf32_arm_link_hash_entry *hash, | |
c820be07 NC |
3019 | bfd_vma destination, |
3020 | asection *sym_sec, | |
3021 | bfd *input_bfd, | |
3022 | const char *name) | |
906e58ca NC |
3023 | { |
3024 | bfd_vma location; | |
3025 | bfd_signed_vma branch_offset; | |
3026 | unsigned int r_type; | |
3027 | struct elf32_arm_link_hash_table * globals; | |
3028 | int thumb2; | |
3029 | int thumb_only; | |
3030 | enum elf32_arm_stub_type stub_type = arm_stub_none; | |
5fa9e92f | 3031 | int use_plt = 0; |
906e58ca | 3032 | |
da5938a2 | 3033 | /* We don't know the actual type of destination in case it is of |
8029a119 | 3034 | type STT_SECTION: give up. */ |
da5938a2 NC |
3035 | if (st_type == STT_SECTION) |
3036 | return stub_type; | |
3037 | ||
906e58ca NC |
3038 | globals = elf32_arm_hash_table (info); |
3039 | ||
3040 | thumb_only = using_thumb_only (globals); | |
3041 | ||
3042 | thumb2 = using_thumb2 (globals); | |
3043 | ||
3044 | /* Determine where the call point is. */ | |
3045 | location = (input_sec->output_offset | |
3046 | + input_sec->output_section->vma | |
3047 | + rel->r_offset); | |
3048 | ||
3049 | branch_offset = (bfd_signed_vma)(destination - location); | |
3050 | ||
3051 | r_type = ELF32_R_TYPE (rel->r_info); | |
3052 | ||
5fa9e92f | 3053 | /* Keep a simpler condition, for the sake of clarity. */ |
329dcd78 | 3054 | if (globals->splt != NULL && hash != NULL && hash->root.plt.offset != (bfd_vma) -1) |
5fa9e92f CL |
3055 | { |
3056 | use_plt = 1; | |
3057 | /* Note when dealing with PLT entries: the main PLT stub is in | |
3058 | ARM mode, so if the branch is in Thumb mode, another | |
3059 | Thumb->ARM stub will be inserted later just before the ARM | |
3060 | PLT stub. We don't take this extra distance into account | |
3061 | here, because if a long branch stub is needed, we'll add a | |
3062 | Thumb->Arm one and branch directly to the ARM PLT entry | |
3063 | because it avoids spreading offset corrections in several | |
3064 | places. */ | |
3065 | } | |
906e58ca | 3066 | |
155d87d7 | 3067 | if (r_type == R_ARM_THM_CALL || r_type == R_ARM_THM_JUMP24) |
906e58ca | 3068 | { |
5fa9e92f CL |
3069 | /* Handle cases where: |
3070 | - this call goes too far (different Thumb/Thumb2 max | |
3071 | distance) | |
155d87d7 CL |
3072 | - it's a Thumb->Arm call and blx is not available, or it's a |
3073 | Thumb->Arm branch (not bl). A stub is needed in this case, | |
3074 | but only if this call is not through a PLT entry. Indeed, | |
3075 | PLT stubs handle mode switching already. | |
5fa9e92f | 3076 | */ |
906e58ca NC |
3077 | if ((!thumb2 |
3078 | && (branch_offset > THM_MAX_FWD_BRANCH_OFFSET | |
3079 | || (branch_offset < THM_MAX_BWD_BRANCH_OFFSET))) | |
3080 | || (thumb2 | |
3081 | && (branch_offset > THM2_MAX_FWD_BRANCH_OFFSET | |
3082 | || (branch_offset < THM2_MAX_BWD_BRANCH_OFFSET))) | |
5fa9e92f | 3083 | || ((st_type != STT_ARM_TFUNC) |
155d87d7 CL |
3084 | && (((r_type == R_ARM_THM_CALL) && !globals->use_blx) |
3085 | || (r_type == R_ARM_THM_JUMP24)) | |
5fa9e92f | 3086 | && !use_plt)) |
906e58ca NC |
3087 | { |
3088 | if (st_type == STT_ARM_TFUNC) | |
3089 | { | |
3090 | /* Thumb to thumb. */ | |
3091 | if (!thumb_only) | |
3092 | { | |
3093 | stub_type = (info->shared | globals->pic_veneer) | |
c2b4a39d | 3094 | /* PIC stubs. */ |
155d87d7 CL |
3095 | ? ((globals->use_blx |
3096 | && (r_type ==R_ARM_THM_CALL)) | |
3097 | /* V5T and above. Stub starts with ARM code, so | |
3098 | we must be able to switch mode before | |
3099 | reaching it, which is only possible for 'bl' | |
3100 | (ie R_ARM_THM_CALL relocation). */ | |
cf3eccff | 3101 | ? arm_stub_long_branch_any_thumb_pic |
ebe24dd4 | 3102 | /* On V4T, use Thumb code only. */ |
d3626fb0 | 3103 | : arm_stub_long_branch_v4t_thumb_thumb_pic) |
c2b4a39d CL |
3104 | |
3105 | /* non-PIC stubs. */ | |
155d87d7 CL |
3106 | : ((globals->use_blx |
3107 | && (r_type ==R_ARM_THM_CALL)) | |
c2b4a39d CL |
3108 | /* V5T and above. */ |
3109 | ? arm_stub_long_branch_any_any | |
3110 | /* V4T. */ | |
d3626fb0 | 3111 | : arm_stub_long_branch_v4t_thumb_thumb); |
906e58ca NC |
3112 | } |
3113 | else | |
3114 | { | |
3115 | stub_type = (info->shared | globals->pic_veneer) | |
ebe24dd4 CL |
3116 | /* PIC stub. */ |
3117 | ? arm_stub_long_branch_thumb_only_pic | |
c2b4a39d CL |
3118 | /* non-PIC stub. */ |
3119 | : arm_stub_long_branch_thumb_only; | |
906e58ca NC |
3120 | } |
3121 | } | |
3122 | else | |
3123 | { | |
3124 | /* Thumb to arm. */ | |
c820be07 NC |
3125 | if (sym_sec != NULL |
3126 | && sym_sec->owner != NULL | |
3127 | && !INTERWORK_FLAG (sym_sec->owner)) | |
3128 | { | |
3129 | (*_bfd_error_handler) | |
3130 | (_("%B(%s): warning: interworking not enabled.\n" | |
3131 | " first occurrence: %B: Thumb call to ARM"), | |
3132 | sym_sec->owner, input_bfd, name); | |
3133 | } | |
3134 | ||
906e58ca | 3135 | stub_type = (info->shared | globals->pic_veneer) |
c2b4a39d | 3136 | /* PIC stubs. */ |
155d87d7 CL |
3137 | ? ((globals->use_blx |
3138 | && (r_type ==R_ARM_THM_CALL)) | |
c2b4a39d | 3139 | /* V5T and above. */ |
cf3eccff | 3140 | ? arm_stub_long_branch_any_arm_pic |
ebe24dd4 CL |
3141 | /* V4T PIC stub. */ |
3142 | : arm_stub_long_branch_v4t_thumb_arm_pic) | |
c2b4a39d CL |
3143 | |
3144 | /* non-PIC stubs. */ | |
155d87d7 CL |
3145 | : ((globals->use_blx |
3146 | && (r_type ==R_ARM_THM_CALL)) | |
c2b4a39d CL |
3147 | /* V5T and above. */ |
3148 | ? arm_stub_long_branch_any_any | |
3149 | /* V4T. */ | |
3150 | : arm_stub_long_branch_v4t_thumb_arm); | |
c820be07 NC |
3151 | |
3152 | /* Handle v4t short branches. */ | |
fea2b4d6 | 3153 | if ((stub_type == arm_stub_long_branch_v4t_thumb_arm) |
c820be07 NC |
3154 | && (branch_offset <= THM_MAX_FWD_BRANCH_OFFSET) |
3155 | && (branch_offset >= THM_MAX_BWD_BRANCH_OFFSET)) | |
fea2b4d6 | 3156 | stub_type = arm_stub_short_branch_v4t_thumb_arm; |
906e58ca NC |
3157 | } |
3158 | } | |
3159 | } | |
155d87d7 | 3160 | else if (r_type == R_ARM_CALL || r_type == R_ARM_JUMP24 || r_type == R_ARM_PLT32) |
906e58ca NC |
3161 | { |
3162 | if (st_type == STT_ARM_TFUNC) | |
3163 | { | |
3164 | /* Arm to thumb. */ | |
c820be07 NC |
3165 | |
3166 | if (sym_sec != NULL | |
3167 | && sym_sec->owner != NULL | |
3168 | && !INTERWORK_FLAG (sym_sec->owner)) | |
3169 | { | |
3170 | (*_bfd_error_handler) | |
3171 | (_("%B(%s): warning: interworking not enabled.\n" | |
c2b4a39d | 3172 | " first occurrence: %B: ARM call to Thumb"), |
c820be07 NC |
3173 | sym_sec->owner, input_bfd, name); |
3174 | } | |
3175 | ||
3176 | /* We have an extra 2-bytes reach because of | |
3177 | the mode change (bit 24 (H) of BLX encoding). */ | |
dec9d5df PB |
3178 | if ((branch_offset > (ARM_MAX_FWD_BRANCH_OFFSET + 2) |
3179 | || (branch_offset < ARM_MAX_BWD_BRANCH_OFFSET) | |
3180 | || ((r_type == R_ARM_CALL) && !globals->use_blx) | |
3181 | || (r_type == R_ARM_JUMP24) | |
3182 | || (r_type == R_ARM_PLT32)) | |
3183 | && !use_plt) | |
906e58ca NC |
3184 | { |
3185 | stub_type = (info->shared | globals->pic_veneer) | |
c2b4a39d | 3186 | /* PIC stubs. */ |
ebe24dd4 CL |
3187 | ? ((globals->use_blx) |
3188 | /* V5T and above. */ | |
3189 | ? arm_stub_long_branch_any_thumb_pic | |
3190 | /* V4T stub. */ | |
3191 | : arm_stub_long_branch_v4t_arm_thumb_pic) | |
3192 | ||
c2b4a39d CL |
3193 | /* non-PIC stubs. */ |
3194 | : ((globals->use_blx) | |
3195 | /* V5T and above. */ | |
3196 | ? arm_stub_long_branch_any_any | |
3197 | /* V4T. */ | |
3198 | : arm_stub_long_branch_v4t_arm_thumb); | |
906e58ca NC |
3199 | } |
3200 | } | |
3201 | else | |
3202 | { | |
3203 | /* Arm to arm. */ | |
3204 | if (branch_offset > ARM_MAX_FWD_BRANCH_OFFSET | |
3205 | || (branch_offset < ARM_MAX_BWD_BRANCH_OFFSET)) | |
3206 | { | |
3207 | stub_type = (info->shared | globals->pic_veneer) | |
c2b4a39d | 3208 | /* PIC stubs. */ |
cf3eccff | 3209 | ? arm_stub_long_branch_any_arm_pic |
c2b4a39d | 3210 | /* non-PIC stubs. */ |
fea2b4d6 | 3211 | : arm_stub_long_branch_any_any; |
906e58ca NC |
3212 | } |
3213 | } | |
3214 | } | |
3215 | ||
3216 | return stub_type; | |
3217 | } | |
3218 | ||
3219 | /* Build a name for an entry in the stub hash table. */ | |
3220 | ||
3221 | static char * | |
3222 | elf32_arm_stub_name (const asection *input_section, | |
3223 | const asection *sym_sec, | |
3224 | const struct elf32_arm_link_hash_entry *hash, | |
3225 | const Elf_Internal_Rela *rel) | |
3226 | { | |
3227 | char *stub_name; | |
3228 | bfd_size_type len; | |
3229 | ||
3230 | if (hash) | |
3231 | { | |
3232 | len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 8 + 1; | |
3233 | stub_name = bfd_malloc (len); | |
3234 | if (stub_name != NULL) | |
3235 | sprintf (stub_name, "%08x_%s+%x", | |
3236 | input_section->id & 0xffffffff, | |
3237 | hash->root.root.root.string, | |
3238 | (int) rel->r_addend & 0xffffffff); | |
3239 | } | |
3240 | else | |
3241 | { | |
3242 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; | |
3243 | stub_name = bfd_malloc (len); | |
3244 | if (stub_name != NULL) | |
3245 | sprintf (stub_name, "%08x_%x:%x+%x", | |
3246 | input_section->id & 0xffffffff, | |
3247 | sym_sec->id & 0xffffffff, | |
3248 | (int) ELF32_R_SYM (rel->r_info) & 0xffffffff, | |
3249 | (int) rel->r_addend & 0xffffffff); | |
3250 | } | |
3251 | ||
3252 | return stub_name; | |
3253 | } | |
3254 | ||
3255 | /* Look up an entry in the stub hash. Stub entries are cached because | |
3256 | creating the stub name takes a bit of time. */ | |
3257 | ||
3258 | static struct elf32_arm_stub_hash_entry * | |
3259 | elf32_arm_get_stub_entry (const asection *input_section, | |
3260 | const asection *sym_sec, | |
3261 | struct elf_link_hash_entry *hash, | |
3262 | const Elf_Internal_Rela *rel, | |
3263 | struct elf32_arm_link_hash_table *htab) | |
3264 | { | |
3265 | struct elf32_arm_stub_hash_entry *stub_entry; | |
3266 | struct elf32_arm_link_hash_entry *h = (struct elf32_arm_link_hash_entry *) hash; | |
3267 | const asection *id_sec; | |
3268 | ||
3269 | if ((input_section->flags & SEC_CODE) == 0) | |
3270 | return NULL; | |
3271 | ||
3272 | /* If this input section is part of a group of sections sharing one | |
3273 | stub section, then use the id of the first section in the group. | |
3274 | Stub names need to include a section id, as there may well be | |
3275 | more than one stub used to reach say, printf, and we need to | |
3276 | distinguish between them. */ | |
3277 | id_sec = htab->stub_group[input_section->id].link_sec; | |
3278 | ||
3279 | if (h != NULL && h->stub_cache != NULL | |
3280 | && h->stub_cache->h == h | |
3281 | && h->stub_cache->id_sec == id_sec) | |
3282 | { | |
3283 | stub_entry = h->stub_cache; | |
3284 | } | |
3285 | else | |
3286 | { | |
3287 | char *stub_name; | |
3288 | ||
3289 | stub_name = elf32_arm_stub_name (id_sec, sym_sec, h, rel); | |
3290 | if (stub_name == NULL) | |
3291 | return NULL; | |
3292 | ||
3293 | stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, | |
3294 | stub_name, FALSE, FALSE); | |
3295 | if (h != NULL) | |
3296 | h->stub_cache = stub_entry; | |
3297 | ||
3298 | free (stub_name); | |
3299 | } | |
3300 | ||
3301 | return stub_entry; | |
3302 | } | |
3303 | ||
48229727 JB |
3304 | /* Find or create a stub section. Returns a pointer to the stub section, and |
3305 | the section to which the stub section will be attached (in *LINK_SEC_P). | |
3306 | LINK_SEC_P may be NULL. */ | |
906e58ca | 3307 | |
48229727 JB |
3308 | static asection * |
3309 | elf32_arm_create_or_find_stub_sec (asection **link_sec_p, asection *section, | |
3310 | struct elf32_arm_link_hash_table *htab) | |
906e58ca NC |
3311 | { |
3312 | asection *link_sec; | |
3313 | asection *stub_sec; | |
906e58ca NC |
3314 | |
3315 | link_sec = htab->stub_group[section->id].link_sec; | |
3316 | stub_sec = htab->stub_group[section->id].stub_sec; | |
3317 | if (stub_sec == NULL) | |
3318 | { | |
3319 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
3320 | if (stub_sec == NULL) | |
3321 | { | |
3322 | size_t namelen; | |
3323 | bfd_size_type len; | |
3324 | char *s_name; | |
3325 | ||
3326 | namelen = strlen (link_sec->name); | |
3327 | len = namelen + sizeof (STUB_SUFFIX); | |
3328 | s_name = bfd_alloc (htab->stub_bfd, len); | |
3329 | if (s_name == NULL) | |
3330 | return NULL; | |
3331 | ||
3332 | memcpy (s_name, link_sec->name, namelen); | |
3333 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
3334 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); | |
3335 | if (stub_sec == NULL) | |
3336 | return NULL; | |
3337 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
3338 | } | |
3339 | htab->stub_group[section->id].stub_sec = stub_sec; | |
3340 | } | |
48229727 JB |
3341 | |
3342 | if (link_sec_p) | |
3343 | *link_sec_p = link_sec; | |
3344 | ||
3345 | return stub_sec; | |
3346 | } | |
3347 | ||
3348 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3349 | stub entry are initialised. */ | |
3350 | ||
3351 | static struct elf32_arm_stub_hash_entry * | |
3352 | elf32_arm_add_stub (const char *stub_name, | |
3353 | asection *section, | |
3354 | struct elf32_arm_link_hash_table *htab) | |
3355 | { | |
3356 | asection *link_sec; | |
3357 | asection *stub_sec; | |
3358 | struct elf32_arm_stub_hash_entry *stub_entry; | |
3359 | ||
3360 | stub_sec = elf32_arm_create_or_find_stub_sec (&link_sec, section, htab); | |
3361 | if (stub_sec == NULL) | |
3362 | return NULL; | |
906e58ca NC |
3363 | |
3364 | /* Enter this entry into the linker stub hash table. */ | |
3365 | stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
3366 | TRUE, FALSE); | |
3367 | if (stub_entry == NULL) | |
3368 | { | |
3369 | (*_bfd_error_handler) (_("%s: cannot create stub entry %s"), | |
3370 | section->owner, | |
3371 | stub_name); | |
3372 | return NULL; | |
3373 | } | |
3374 | ||
3375 | stub_entry->stub_sec = stub_sec; | |
3376 | stub_entry->stub_offset = 0; | |
3377 | stub_entry->id_sec = link_sec; | |
3378 | ||
906e58ca NC |
3379 | return stub_entry; |
3380 | } | |
3381 | ||
3382 | /* Store an Arm insn into an output section not processed by | |
3383 | elf32_arm_write_section. */ | |
3384 | ||
3385 | static void | |
8029a119 NC |
3386 | put_arm_insn (struct elf32_arm_link_hash_table * htab, |
3387 | bfd * output_bfd, bfd_vma val, void * ptr) | |
906e58ca NC |
3388 | { |
3389 | if (htab->byteswap_code != bfd_little_endian (output_bfd)) | |
3390 | bfd_putl32 (val, ptr); | |
3391 | else | |
3392 | bfd_putb32 (val, ptr); | |
3393 | } | |
3394 | ||
3395 | /* Store a 16-bit Thumb insn into an output section not processed by | |
3396 | elf32_arm_write_section. */ | |
3397 | ||
3398 | static void | |
8029a119 NC |
3399 | put_thumb_insn (struct elf32_arm_link_hash_table * htab, |
3400 | bfd * output_bfd, bfd_vma val, void * ptr) | |
906e58ca NC |
3401 | { |
3402 | if (htab->byteswap_code != bfd_little_endian (output_bfd)) | |
3403 | bfd_putl16 (val, ptr); | |
3404 | else | |
3405 | bfd_putb16 (val, ptr); | |
3406 | } | |
3407 | ||
48229727 JB |
3408 | static bfd_reloc_status_type elf32_arm_final_link_relocate |
3409 | (reloc_howto_type *, bfd *, bfd *, asection *, bfd_byte *, | |
3410 | Elf_Internal_Rela *, bfd_vma, struct bfd_link_info *, asection *, | |
3411 | const char *, int, struct elf_link_hash_entry *, bfd_boolean *, char **); | |
3412 | ||
906e58ca NC |
3413 | static bfd_boolean |
3414 | arm_build_one_stub (struct bfd_hash_entry *gen_entry, | |
3415 | void * in_arg) | |
3416 | { | |
48229727 | 3417 | #define MAXRELOCS 2 |
906e58ca NC |
3418 | struct elf32_arm_stub_hash_entry *stub_entry; |
3419 | struct bfd_link_info *info; | |
3420 | struct elf32_arm_link_hash_table *htab; | |
3421 | asection *stub_sec; | |
3422 | bfd *stub_bfd; | |
3423 | bfd_vma stub_addr; | |
3424 | bfd_byte *loc; | |
3425 | bfd_vma sym_value; | |
3426 | int template_size; | |
3427 | int size; | |
461a49ca | 3428 | const insn_sequence *template; |
906e58ca NC |
3429 | int i; |
3430 | struct elf32_arm_link_hash_table * globals; | |
48229727 JB |
3431 | int stub_reloc_idx[MAXRELOCS] = {-1, -1}; |
3432 | int stub_reloc_offset[MAXRELOCS] = {0, 0}; | |
3433 | int nrelocs = 0; | |
906e58ca NC |
3434 | |
3435 | /* Massage our args to the form they really have. */ | |
3436 | stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry; | |
3437 | info = (struct bfd_link_info *) in_arg; | |
3438 | ||
3439 | globals = elf32_arm_hash_table (info); | |
3440 | ||
3441 | htab = elf32_arm_hash_table (info); | |
3442 | stub_sec = stub_entry->stub_sec; | |
3443 | ||
3444 | /* Make a note of the offset within the stubs for this entry. */ | |
3445 | stub_entry->stub_offset = stub_sec->size; | |
3446 | loc = stub_sec->contents + stub_entry->stub_offset; | |
3447 | ||
3448 | stub_bfd = stub_sec->owner; | |
3449 | ||
3450 | /* This is the address of the start of the stub. */ | |
3451 | stub_addr = stub_sec->output_section->vma + stub_sec->output_offset | |
3452 | + stub_entry->stub_offset; | |
3453 | ||
3454 | /* This is the address of the stub destination. */ | |
3455 | sym_value = (stub_entry->target_value | |
3456 | + stub_entry->target_section->output_offset | |
3457 | + stub_entry->target_section->output_section->vma); | |
3458 | ||
461a49ca DJ |
3459 | template = stub_entry->stub_template; |
3460 | template_size = stub_entry->stub_template_size; | |
906e58ca NC |
3461 | |
3462 | size = 0; | |
461a49ca | 3463 | for (i = 0; i < template_size; i++) |
906e58ca | 3464 | { |
4e31c731 | 3465 | switch (template[i].type) |
461a49ca DJ |
3466 | { |
3467 | case THUMB16_TYPE: | |
48229727 JB |
3468 | { |
3469 | bfd_vma data = template[i].data; | |
3470 | if (template[i].reloc_addend != 0) | |
3471 | { | |
3472 | /* We've borrowed the reloc_addend field to mean we should | |
3473 | insert a condition code into this (Thumb-1 branch) | |
3474 | instruction. See THUMB16_BCOND_INSN. */ | |
3475 | BFD_ASSERT ((data & 0xff00) == 0xd000); | |
3476 | data |= ((stub_entry->orig_insn >> 22) & 0xf) << 8; | |
3477 | } | |
3478 | put_thumb_insn (globals, stub_bfd, data, loc + size); | |
3479 | size += 2; | |
3480 | } | |
461a49ca | 3481 | break; |
906e58ca | 3482 | |
48229727 JB |
3483 | case THUMB32_TYPE: |
3484 | put_thumb_insn (globals, stub_bfd, (template[i].data >> 16) & 0xffff, | |
3485 | loc + size); | |
3486 | put_thumb_insn (globals, stub_bfd, template[i].data & 0xffff, | |
3487 | loc + size + 2); | |
3488 | if (template[i].r_type != R_ARM_NONE) | |
3489 | { | |
3490 | stub_reloc_idx[nrelocs] = i; | |
3491 | stub_reloc_offset[nrelocs++] = size; | |
3492 | } | |
3493 | size += 4; | |
3494 | break; | |
3495 | ||
461a49ca DJ |
3496 | case ARM_TYPE: |
3497 | put_arm_insn (globals, stub_bfd, template[i].data, loc + size); | |
3498 | /* Handle cases where the target is encoded within the | |
3499 | instruction. */ | |
ebe24dd4 | 3500 | if (template[i].r_type == R_ARM_JUMP24) |
461a49ca | 3501 | { |
48229727 JB |
3502 | stub_reloc_idx[nrelocs] = i; |
3503 | stub_reloc_offset[nrelocs++] = size; | |
461a49ca DJ |
3504 | } |
3505 | size += 4; | |
3506 | break; | |
3507 | ||
3508 | case DATA_TYPE: | |
3509 | bfd_put_32 (stub_bfd, template[i].data, loc + size); | |
48229727 JB |
3510 | stub_reloc_idx[nrelocs] = i; |
3511 | stub_reloc_offset[nrelocs++] = size; | |
461a49ca DJ |
3512 | size += 4; |
3513 | break; | |
3514 | ||
3515 | default: | |
3516 | BFD_FAIL (); | |
3517 | return FALSE; | |
3518 | } | |
906e58ca | 3519 | } |
461a49ca | 3520 | |
906e58ca NC |
3521 | stub_sec->size += size; |
3522 | ||
461a49ca DJ |
3523 | /* Stub size has already been computed in arm_size_one_stub. Check |
3524 | consistency. */ | |
3525 | BFD_ASSERT (size == stub_entry->stub_size); | |
3526 | ||
906e58ca NC |
3527 | /* Destination is Thumb. Force bit 0 to 1 to reflect this. */ |
3528 | if (stub_entry->st_type == STT_ARM_TFUNC) | |
3529 | sym_value |= 1; | |
3530 | ||
48229727 JB |
3531 | /* Assume there is at least one and at most MAXRELOCS entries to relocate |
3532 | in each stub. */ | |
3533 | BFD_ASSERT (nrelocs != 0 && nrelocs <= MAXRELOCS); | |
c820be07 | 3534 | |
48229727 JB |
3535 | for (i = 0; i < nrelocs; i++) |
3536 | if (template[stub_reloc_idx[i]].r_type == R_ARM_THM_JUMP24 | |
3537 | || template[stub_reloc_idx[i]].r_type == R_ARM_THM_JUMP19 | |
3538 | || template[stub_reloc_idx[i]].r_type == R_ARM_THM_CALL | |
3539 | || template[stub_reloc_idx[i]].r_type == R_ARM_THM_XPC22) | |
3540 | { | |
3541 | Elf_Internal_Rela rel; | |
3542 | bfd_boolean unresolved_reloc; | |
3543 | char *error_message; | |
3544 | int sym_flags | |
3545 | = (template[stub_reloc_idx[i]].r_type != R_ARM_THM_XPC22) | |
3546 | ? STT_ARM_TFUNC : 0; | |
3547 | bfd_vma points_to = sym_value + stub_entry->target_addend; | |
3548 | ||
3549 | rel.r_offset = stub_entry->stub_offset + stub_reloc_offset[i]; | |
3550 | rel.r_info = ELF32_R_INFO (0, template[stub_reloc_idx[i]].r_type); | |
3551 | rel.r_addend = template[stub_reloc_idx[i]].reloc_addend; | |
3552 | ||
3553 | if (stub_entry->stub_type == arm_stub_a8_veneer_b_cond && i == 0) | |
3554 | /* The first relocation in the elf32_arm_stub_a8_veneer_b_cond[] | |
3555 | template should refer back to the instruction after the original | |
3556 | branch. */ | |
3557 | points_to = sym_value; | |
3558 | ||
3559 | /* Note: _bfd_final_link_relocate doesn't handle these relocations | |
3560 | properly. We should probably use this function unconditionally, | |
3561 | rather than only for certain relocations listed in the enclosing | |
3562 | conditional, for the sake of consistency. */ | |
3563 | elf32_arm_final_link_relocate (elf32_arm_howto_from_type | |
3564 | (template[stub_reloc_idx[i]].r_type), | |
3565 | stub_bfd, info->output_bfd, stub_sec, stub_sec->contents, &rel, | |
3566 | points_to, info, stub_entry->target_section, "", sym_flags, | |
3567 | (struct elf_link_hash_entry *) stub_entry, &unresolved_reloc, | |
3568 | &error_message); | |
3569 | } | |
3570 | else | |
3571 | { | |
3572 | _bfd_final_link_relocate (elf32_arm_howto_from_type | |
3573 | (template[stub_reloc_idx[i]].r_type), stub_bfd, stub_sec, | |
3574 | stub_sec->contents, stub_entry->stub_offset + stub_reloc_offset[i], | |
3575 | sym_value + stub_entry->target_addend, | |
3576 | template[stub_reloc_idx[i]].reloc_addend); | |
3577 | } | |
906e58ca NC |
3578 | |
3579 | return TRUE; | |
48229727 | 3580 | #undef MAXRELOCS |
906e58ca NC |
3581 | } |
3582 | ||
48229727 JB |
3583 | /* Calculate the template, template size and instruction size for a stub. |
3584 | Return value is the instruction size. */ | |
906e58ca | 3585 | |
48229727 JB |
3586 | static unsigned int |
3587 | find_stub_size_and_template (enum elf32_arm_stub_type stub_type, | |
3588 | const insn_sequence **stub_template, | |
3589 | int *stub_template_size) | |
906e58ca | 3590 | { |
48229727 JB |
3591 | const insn_sequence *template = NULL; |
3592 | int template_size = 0, i; | |
3593 | unsigned int size; | |
906e58ca | 3594 | |
48229727 JB |
3595 | template = stub_definitions[stub_type].template; |
3596 | template_size = stub_definitions[stub_type].template_size; | |
906e58ca NC |
3597 | |
3598 | size = 0; | |
461a49ca DJ |
3599 | for (i = 0; i < template_size; i++) |
3600 | { | |
4e31c731 | 3601 | switch (template[i].type) |
461a49ca DJ |
3602 | { |
3603 | case THUMB16_TYPE: | |
3604 | size += 2; | |
3605 | break; | |
3606 | ||
3607 | case ARM_TYPE: | |
48229727 | 3608 | case THUMB32_TYPE: |
461a49ca DJ |
3609 | case DATA_TYPE: |
3610 | size += 4; | |
3611 | break; | |
3612 | ||
3613 | default: | |
3614 | BFD_FAIL (); | |
3615 | return FALSE; | |
3616 | } | |
3617 | } | |
3618 | ||
48229727 JB |
3619 | if (stub_template) |
3620 | *stub_template = template; | |
3621 | ||
3622 | if (stub_template_size) | |
3623 | *stub_template_size = template_size; | |
3624 | ||
3625 | return size; | |
3626 | } | |
3627 | ||
3628 | /* As above, but don't actually build the stub. Just bump offset so | |
3629 | we know stub section sizes. */ | |
3630 | ||
3631 | static bfd_boolean | |
3632 | arm_size_one_stub (struct bfd_hash_entry *gen_entry, | |
3633 | void * in_arg) | |
3634 | { | |
3635 | struct elf32_arm_stub_hash_entry *stub_entry; | |
3636 | struct elf32_arm_link_hash_table *htab; | |
3637 | const insn_sequence *template; | |
3638 | int template_size, size; | |
3639 | ||
3640 | /* Massage our args to the form they really have. */ | |
3641 | stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry; | |
3642 | htab = (struct elf32_arm_link_hash_table *) in_arg; | |
3643 | ||
3644 | BFD_ASSERT((stub_entry->stub_type > arm_stub_none) | |
3645 | && stub_entry->stub_type < ARRAY_SIZE(stub_definitions)); | |
3646 | ||
3647 | size = find_stub_size_and_template (stub_entry->stub_type, &template, | |
3648 | &template_size); | |
3649 | ||
461a49ca DJ |
3650 | stub_entry->stub_size = size; |
3651 | stub_entry->stub_template = template; | |
3652 | stub_entry->stub_template_size = template_size; | |
3653 | ||
906e58ca NC |
3654 | size = (size + 7) & ~7; |
3655 | stub_entry->stub_sec->size += size; | |
461a49ca | 3656 | |
906e58ca NC |
3657 | return TRUE; |
3658 | } | |
3659 | ||
3660 | /* External entry points for sizing and building linker stubs. */ | |
3661 | ||
3662 | /* Set up various things so that we can make a list of input sections | |
3663 | for each output section included in the link. Returns -1 on error, | |
3664 | 0 when no stubs will be needed, and 1 on success. */ | |
3665 | ||
3666 | int | |
3667 | elf32_arm_setup_section_lists (bfd *output_bfd, | |
3668 | struct bfd_link_info *info) | |
3669 | { | |
3670 | bfd *input_bfd; | |
3671 | unsigned int bfd_count; | |
3672 | int top_id, top_index; | |
3673 | asection *section; | |
3674 | asection **input_list, **list; | |
3675 | bfd_size_type amt; | |
3676 | struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info); | |
3677 | ||
3678 | if (! is_elf_hash_table (htab)) | |
3679 | return 0; | |
3680 | ||
3681 | /* Count the number of input BFDs and find the top input section id. */ | |
3682 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; | |
3683 | input_bfd != NULL; | |
3684 | input_bfd = input_bfd->link_next) | |
3685 | { | |
3686 | bfd_count += 1; | |
3687 | for (section = input_bfd->sections; | |
3688 | section != NULL; | |
3689 | section = section->next) | |
3690 | { | |
3691 | if (top_id < section->id) | |
3692 | top_id = section->id; | |
3693 | } | |
3694 | } | |
3695 | htab->bfd_count = bfd_count; | |
3696 | ||
3697 | amt = sizeof (struct map_stub) * (top_id + 1); | |
3698 | htab->stub_group = bfd_zmalloc (amt); | |
3699 | if (htab->stub_group == NULL) | |
3700 | return -1; | |
3701 | ||
3702 | /* We can't use output_bfd->section_count here to find the top output | |
3703 | section index as some sections may have been removed, and | |
3704 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
3705 | for (section = output_bfd->sections, top_index = 0; | |
3706 | section != NULL; | |
3707 | section = section->next) | |
3708 | { | |
3709 | if (top_index < section->index) | |
3710 | top_index = section->index; | |
3711 | } | |
3712 | ||
3713 | htab->top_index = top_index; | |
3714 | amt = sizeof (asection *) * (top_index + 1); | |
3715 | input_list = bfd_malloc (amt); | |
3716 | htab->input_list = input_list; | |
3717 | if (input_list == NULL) | |
3718 | return -1; | |
3719 | ||
3720 | /* For sections we aren't interested in, mark their entries with a | |
3721 | value we can check later. */ | |
3722 | list = input_list + top_index; | |
3723 | do | |
3724 | *list = bfd_abs_section_ptr; | |
3725 | while (list-- != input_list); | |
3726 | ||
3727 | for (section = output_bfd->sections; | |
3728 | section != NULL; | |
3729 | section = section->next) | |
3730 | { | |
3731 | if ((section->flags & SEC_CODE) != 0) | |
3732 | input_list[section->index] = NULL; | |
3733 | } | |
3734 | ||
3735 | return 1; | |
3736 | } | |
3737 | ||
3738 | /* The linker repeatedly calls this function for each input section, | |
3739 | in the order that input sections are linked into output sections. | |
3740 | Build lists of input sections to determine groupings between which | |
3741 | we may insert linker stubs. */ | |
3742 | ||
3743 | void | |
3744 | elf32_arm_next_input_section (struct bfd_link_info *info, | |
3745 | asection *isec) | |
3746 | { | |
3747 | struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info); | |
3748 | ||
3749 | if (isec->output_section->index <= htab->top_index) | |
3750 | { | |
3751 | asection **list = htab->input_list + isec->output_section->index; | |
3752 | ||
3753 | if (*list != bfd_abs_section_ptr) | |
3754 | { | |
3755 | /* Steal the link_sec pointer for our list. */ | |
3756 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) | |
3757 | /* This happens to make the list in reverse order, | |
07d72278 | 3758 | which we reverse later. */ |
906e58ca NC |
3759 | PREV_SEC (isec) = *list; |
3760 | *list = isec; | |
3761 | } | |
3762 | } | |
3763 | } | |
3764 | ||
3765 | /* See whether we can group stub sections together. Grouping stub | |
3766 | sections may result in fewer stubs. More importantly, we need to | |
07d72278 | 3767 | put all .init* and .fini* stubs at the end of the .init or |
906e58ca NC |
3768 | .fini output sections respectively, because glibc splits the |
3769 | _init and _fini functions into multiple parts. Putting a stub in | |
3770 | the middle of a function is not a good idea. */ | |
3771 | ||
3772 | static void | |
3773 | group_sections (struct elf32_arm_link_hash_table *htab, | |
3774 | bfd_size_type stub_group_size, | |
07d72278 | 3775 | bfd_boolean stubs_always_after_branch) |
906e58ca | 3776 | { |
07d72278 | 3777 | asection **list = htab->input_list; |
906e58ca NC |
3778 | |
3779 | do | |
3780 | { | |
3781 | asection *tail = *list; | |
07d72278 | 3782 | asection *head; |
906e58ca NC |
3783 | |
3784 | if (tail == bfd_abs_section_ptr) | |
3785 | continue; | |
3786 | ||
07d72278 DJ |
3787 | /* Reverse the list: we must avoid placing stubs at the |
3788 | beginning of the section because the beginning of the text | |
3789 | section may be required for an interrupt vector in bare metal | |
3790 | code. */ | |
3791 | #define NEXT_SEC PREV_SEC | |
e780aef2 CL |
3792 | head = NULL; |
3793 | while (tail != NULL) | |
3794 | { | |
3795 | /* Pop from tail. */ | |
3796 | asection *item = tail; | |
3797 | tail = PREV_SEC (item); | |
3798 | ||
3799 | /* Push on head. */ | |
3800 | NEXT_SEC (item) = head; | |
3801 | head = item; | |
3802 | } | |
07d72278 DJ |
3803 | |
3804 | while (head != NULL) | |
906e58ca NC |
3805 | { |
3806 | asection *curr; | |
07d72278 | 3807 | asection *next; |
e780aef2 CL |
3808 | bfd_vma stub_group_start = head->output_offset; |
3809 | bfd_vma end_of_next; | |
906e58ca | 3810 | |
07d72278 | 3811 | curr = head; |
e780aef2 | 3812 | while (NEXT_SEC (curr) != NULL) |
8cd931b7 | 3813 | { |
e780aef2 CL |
3814 | next = NEXT_SEC (curr); |
3815 | end_of_next = next->output_offset + next->size; | |
3816 | if (end_of_next - stub_group_start >= stub_group_size) | |
3817 | /* End of NEXT is too far from start, so stop. */ | |
8cd931b7 | 3818 | break; |
e780aef2 CL |
3819 | /* Add NEXT to the group. */ |
3820 | curr = next; | |
8cd931b7 | 3821 | } |
906e58ca | 3822 | |
07d72278 | 3823 | /* OK, the size from the start to the start of CURR is less |
906e58ca | 3824 | than stub_group_size and thus can be handled by one stub |
07d72278 | 3825 | section. (Or the head section is itself larger than |
906e58ca NC |
3826 | stub_group_size, in which case we may be toast.) |
3827 | We should really be keeping track of the total size of | |
3828 | stubs added here, as stubs contribute to the final output | |
7fb9f789 | 3829 | section size. */ |
906e58ca NC |
3830 | do |
3831 | { | |
07d72278 | 3832 | next = NEXT_SEC (head); |
906e58ca | 3833 | /* Set up this stub group. */ |
07d72278 | 3834 | htab->stub_group[head->id].link_sec = curr; |
906e58ca | 3835 | } |
07d72278 | 3836 | while (head != curr && (head = next) != NULL); |
906e58ca NC |
3837 | |
3838 | /* But wait, there's more! Input sections up to stub_group_size | |
07d72278 DJ |
3839 | bytes after the stub section can be handled by it too. */ |
3840 | if (!stubs_always_after_branch) | |
906e58ca | 3841 | { |
e780aef2 CL |
3842 | stub_group_start = curr->output_offset + curr->size; |
3843 | ||
8cd931b7 | 3844 | while (next != NULL) |
906e58ca | 3845 | { |
e780aef2 CL |
3846 | end_of_next = next->output_offset + next->size; |
3847 | if (end_of_next - stub_group_start >= stub_group_size) | |
3848 | /* End of NEXT is too far from stubs, so stop. */ | |
8cd931b7 | 3849 | break; |
e780aef2 | 3850 | /* Add NEXT to the stub group. */ |
07d72278 DJ |
3851 | head = next; |
3852 | next = NEXT_SEC (head); | |
3853 | htab->stub_group[head->id].link_sec = curr; | |
906e58ca NC |
3854 | } |
3855 | } | |
07d72278 | 3856 | head = next; |
906e58ca NC |
3857 | } |
3858 | } | |
07d72278 | 3859 | while (list++ != htab->input_list + htab->top_index); |
906e58ca NC |
3860 | |
3861 | free (htab->input_list); | |
3862 | #undef PREV_SEC | |
07d72278 | 3863 | #undef NEXT_SEC |
906e58ca NC |
3864 | } |
3865 | ||
48229727 JB |
3866 | /* Comparison function for sorting/searching relocations relating to Cortex-A8 |
3867 | erratum fix. */ | |
3868 | ||
3869 | static int | |
3870 | a8_reloc_compare (const void *a, const void *b) | |
3871 | { | |
3872 | const struct a8_erratum_reloc *ra = a, *rb = b; | |
3873 | ||
3874 | if (ra->from < rb->from) | |
3875 | return -1; | |
3876 | else if (ra->from > rb->from) | |
3877 | return 1; | |
3878 | else | |
3879 | return 0; | |
3880 | } | |
3881 | ||
3882 | static struct elf_link_hash_entry *find_thumb_glue (struct bfd_link_info *, | |
3883 | const char *, char **); | |
3884 | ||
3885 | /* Helper function to scan code for sequences which might trigger the Cortex-A8 | |
3886 | branch/TLB erratum. Fill in the table described by A8_FIXES_P, | |
3887 | NUM_A8_FIXES_P, A8_FIX_TABLE_SIZE_P. Return 1 if an error occurs, 0 | |
3888 | otherwise. */ | |
3889 | ||
3890 | static int | |
3891 | cortex_a8_erratum_scan (bfd *input_bfd, struct bfd_link_info *info, | |
3892 | struct a8_erratum_fix **a8_fixes_p, | |
3893 | unsigned int *num_a8_fixes_p, | |
3894 | unsigned int *a8_fix_table_size_p, | |
3895 | struct a8_erratum_reloc *a8_relocs, | |
3896 | unsigned int num_a8_relocs) | |
3897 | { | |
3898 | asection *section; | |
3899 | struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info); | |
3900 | struct a8_erratum_fix *a8_fixes = *a8_fixes_p; | |
3901 | unsigned int num_a8_fixes = *num_a8_fixes_p; | |
3902 | unsigned int a8_fix_table_size = *a8_fix_table_size_p; | |
3903 | ||
3904 | for (section = input_bfd->sections; | |
3905 | section != NULL; | |
3906 | section = section->next) | |
3907 | { | |
3908 | bfd_byte *contents = NULL; | |
3909 | struct _arm_elf_section_data *sec_data; | |
3910 | unsigned int span; | |
3911 | bfd_vma base_vma; | |
3912 | ||
3913 | if (elf_section_type (section) != SHT_PROGBITS | |
3914 | || (elf_section_flags (section) & SHF_EXECINSTR) == 0 | |
3915 | || (section->flags & SEC_EXCLUDE) != 0 | |
3916 | || (section->sec_info_type == ELF_INFO_TYPE_JUST_SYMS) | |
3917 | || (section->output_section == bfd_abs_section_ptr)) | |
3918 | continue; | |
3919 | ||
3920 | base_vma = section->output_section->vma + section->output_offset; | |
3921 | ||
3922 | if (elf_section_data (section)->this_hdr.contents != NULL) | |
3923 | contents = elf_section_data (section)->this_hdr.contents; | |
3924 | else if (! bfd_malloc_and_get_section (input_bfd, section, &contents)) | |
3925 | return 1; | |
3926 | ||
3927 | sec_data = elf32_arm_section_data (section); | |
3928 | ||
3929 | for (span = 0; span < sec_data->mapcount; span++) | |
3930 | { | |
3931 | unsigned int span_start = sec_data->map[span].vma; | |
3932 | unsigned int span_end = (span == sec_data->mapcount - 1) | |
3933 | ? section->size : sec_data->map[span + 1].vma; | |
3934 | unsigned int i; | |
3935 | char span_type = sec_data->map[span].type; | |
3936 | bfd_boolean last_was_32bit = FALSE, last_was_branch = FALSE; | |
3937 | ||
3938 | if (span_type != 't') | |
3939 | continue; | |
3940 | ||
3941 | /* Span is entirely within a single 4KB region: skip scanning. */ | |
3942 | if (((base_vma + span_start) & ~0xfff) | |
3943 | == ((base_vma + span_end) & ~0xfff)) | |
3944 | continue; | |
3945 | ||
3946 | /* Scan for 32-bit Thumb-2 branches which span two 4K regions, where: | |
3947 | ||
3948 | * The opcode is BLX.W, BL.W, B.W, Bcc.W | |
3949 | * The branch target is in the same 4KB region as the | |
3950 | first half of the branch. | |
3951 | * The instruction before the branch is a 32-bit | |
3952 | length non-branch instruction. | |
3953 | */ | |
3954 | ||
3955 | for (i = span_start; i < span_end;) | |
3956 | { | |
3957 | unsigned int insn = bfd_getl16 (&contents[i]); | |
3958 | bfd_boolean insn_32bit = FALSE, is_blx = FALSE, is_b = FALSE; | |
3959 | bfd_boolean is_bl = FALSE, is_bcc = FALSE, is_32bit_branch; | |
3960 | ||
3961 | if ((insn & 0xe000) == 0xe000 && (insn & 0x1800) != 0x0000) | |
3962 | insn_32bit = TRUE; | |
3963 | ||
3964 | if (insn_32bit) | |
3965 | { | |
3966 | /* Load the rest of the insn (in manual-friendly order). */ | |
3967 | insn = (insn << 16) | bfd_getl16 (&contents[i + 2]); | |
3968 | ||
3969 | /* Encoding T4: B<c>.W. */ | |
3970 | is_b = (insn & 0xf800d000) == 0xf0009000; | |
3971 | /* Encoding T1: BL<c>.W. */ | |
3972 | is_bl = (insn & 0xf800d000) == 0xf000d000; | |
3973 | /* Encoding T2: BLX<c>.W. */ | |
3974 | is_blx = (insn & 0xf800d000) == 0xf000c000; | |
3975 | /* Encoding T3: B<c>.W (not permitted in IT block). */ | |
3976 | is_bcc = (insn & 0xf800d000) == 0xf0008000 | |
3977 | && (insn & 0x07f00000) != 0x03800000; | |
3978 | } | |
3979 | ||
3980 | is_32bit_branch = is_b || is_bl || is_blx || is_bcc; | |
3981 | ||
3982 | if (((base_vma + i) & 0xfff) == 0xffe && insn_32bit | |
3983 | && is_32bit_branch && last_was_32bit && !last_was_branch) | |
3984 | { | |
3985 | bfd_vma offset; | |
3986 | bfd_boolean force_target_arm = FALSE; | |
3987 | bfd_boolean force_target_thumb = FALSE; | |
3988 | bfd_vma target; | |
3989 | enum elf32_arm_stub_type stub_type = arm_stub_none; | |
3990 | struct a8_erratum_reloc key, *found; | |
3991 | ||
3992 | key.from = base_vma + i; | |
3993 | found = bsearch (&key, a8_relocs, num_a8_relocs, | |
3994 | sizeof (struct a8_erratum_reloc), | |
3995 | &a8_reloc_compare); | |
3996 | ||
3997 | if (found) | |
3998 | { | |
3999 | char *error_message = NULL; | |
4000 | struct elf_link_hash_entry *entry; | |
4001 | ||
4002 | /* We don't care about the error returned from this | |
4003 | function, only if there is glue or not. */ | |
4004 | entry = find_thumb_glue (info, found->sym_name, | |
4005 | &error_message); | |
4006 | ||
4007 | if (entry) | |
4008 | found->non_a8_stub = TRUE; | |
4009 | ||
4010 | if (found->r_type == R_ARM_THM_CALL | |
4011 | && found->st_type != STT_ARM_TFUNC) | |
4012 | force_target_arm = TRUE; | |
4013 | else if (found->r_type == R_ARM_THM_CALL | |
4014 | && found->st_type == STT_ARM_TFUNC) | |
4015 | force_target_thumb = TRUE; | |
4016 | } | |
4017 | ||
4018 | /* Check if we have an offending branch instruction. */ | |
4019 | ||
4020 | if (found && found->non_a8_stub) | |
4021 | /* We've already made a stub for this instruction, e.g. | |
4022 | it's a long branch or a Thumb->ARM stub. Assume that | |
4023 | stub will suffice to work around the A8 erratum (see | |
4024 | setting of always_after_branch above). */ | |
4025 | ; | |
4026 | else if (is_bcc) | |
4027 | { | |
4028 | offset = (insn & 0x7ff) << 1; | |
4029 | offset |= (insn & 0x3f0000) >> 4; | |
4030 | offset |= (insn & 0x2000) ? 0x40000 : 0; | |
4031 | offset |= (insn & 0x800) ? 0x80000 : 0; | |
4032 | offset |= (insn & 0x4000000) ? 0x100000 : 0; | |
4033 | if (offset & 0x100000) | |
4034 | offset |= ~0xfffff; | |
4035 | stub_type = arm_stub_a8_veneer_b_cond; | |
4036 | } | |
4037 | else if (is_b || is_bl || is_blx) | |
4038 | { | |
4039 | int s = (insn & 0x4000000) != 0; | |
4040 | int j1 = (insn & 0x2000) != 0; | |
4041 | int j2 = (insn & 0x800) != 0; | |
4042 | int i1 = !(j1 ^ s); | |
4043 | int i2 = !(j2 ^ s); | |
4044 | ||
4045 | offset = (insn & 0x7ff) << 1; | |
4046 | offset |= (insn & 0x3ff0000) >> 4; | |
4047 | offset |= i2 << 22; | |
4048 | offset |= i1 << 23; | |
4049 | offset |= s << 24; | |
4050 | if (offset & 0x1000000) | |
4051 | offset |= ~0xffffff; | |
4052 | ||
4053 | if (is_blx) | |
4054 | offset &= ~3u; | |
4055 | ||
4056 | stub_type = is_blx ? arm_stub_a8_veneer_blx : | |
4057 | is_bl ? arm_stub_a8_veneer_bl : arm_stub_a8_veneer_b; | |
4058 | } | |
4059 | ||
4060 | if (stub_type != arm_stub_none) | |
4061 | { | |
4062 | bfd_vma pc_for_insn = base_vma + i + 4; | |
4063 | ||
4064 | /* The original instruction is a BL, but the target is | |
4065 | an ARM instruction. If we were not making a stub, | |
4066 | the BL would have been converted to a BLX. Use the | |
4067 | BLX stub instead in that case. */ | |
4068 | if (htab->use_blx && force_target_arm | |
4069 | && stub_type == arm_stub_a8_veneer_bl) | |
4070 | { | |
4071 | stub_type = arm_stub_a8_veneer_blx; | |
4072 | is_blx = TRUE; | |
4073 | is_bl = FALSE; | |
4074 | } | |
4075 | /* Conversely, if the original instruction was | |
4076 | BLX but the target is Thumb mode, use the BL | |
4077 | stub. */ | |
4078 | else if (force_target_thumb | |
4079 | && stub_type == arm_stub_a8_veneer_blx) | |
4080 | { | |
4081 | stub_type = arm_stub_a8_veneer_bl; | |
4082 | is_blx = FALSE; | |
4083 | is_bl = TRUE; | |
4084 | } | |
4085 | ||
4086 | if (is_blx) | |
4087 | pc_for_insn &= ~3u; | |
4088 | ||
4089 | /* If we found a relocation, use the proper destination, | |
4090 | not the offset in the (unrelocated) instruction. | |
4091 | Note this is always done if we switched the stub type | |
4092 | above. */ | |
4093 | if (found) | |
4094 | offset = found->destination - pc_for_insn; | |
4095 | ||
4096 | target = pc_for_insn + offset; | |
4097 | ||
4098 | /* The BLX stub is ARM-mode code. Adjust the offset to | |
4099 | take the different PC value (+8 instead of +4) into | |
4100 | account. */ | |
4101 | if (stub_type == arm_stub_a8_veneer_blx) | |
4102 | offset += 4; | |
4103 | ||
4104 | if (((base_vma + i) & ~0xfff) == (target & ~0xfff)) | |
4105 | { | |
4106 | char *stub_name; | |
4107 | ||
4108 | if (num_a8_fixes == a8_fix_table_size) | |
4109 | { | |
4110 | a8_fix_table_size *= 2; | |
4111 | a8_fixes = bfd_realloc (a8_fixes, | |
4112 | sizeof (struct a8_erratum_fix) | |
4113 | * a8_fix_table_size); | |
4114 | } | |
4115 | ||
4116 | stub_name = bfd_malloc (8 + 1 + 8 + 1); | |
4117 | if (stub_name != NULL) | |
4118 | sprintf (stub_name, "%x:%x", section->id, i); | |
4119 | ||
4120 | a8_fixes[num_a8_fixes].input_bfd = input_bfd; | |
4121 | a8_fixes[num_a8_fixes].section = section; | |
4122 | a8_fixes[num_a8_fixes].offset = i; | |
4123 | a8_fixes[num_a8_fixes].addend = offset; | |
4124 | a8_fixes[num_a8_fixes].orig_insn = insn; | |
4125 | a8_fixes[num_a8_fixes].stub_name = stub_name; | |
4126 | a8_fixes[num_a8_fixes].stub_type = stub_type; | |
4127 | ||
4128 | num_a8_fixes++; | |
4129 | } | |
4130 | } | |
4131 | } | |
4132 | ||
4133 | i += insn_32bit ? 4 : 2; | |
4134 | last_was_32bit = insn_32bit; | |
4135 | last_was_branch = is_32bit_branch; | |
4136 | } | |
4137 | } | |
4138 | ||
4139 | if (elf_section_data (section)->this_hdr.contents == NULL) | |
4140 | free (contents); | |
4141 | } | |
4142 | ||
4143 | *a8_fixes_p = a8_fixes; | |
4144 | *num_a8_fixes_p = num_a8_fixes; | |
4145 | *a8_fix_table_size_p = a8_fix_table_size; | |
4146 | ||
4147 | return 0; | |
4148 | } | |
4149 | ||
906e58ca NC |
4150 | /* Determine and set the size of the stub section for a final link. |
4151 | ||
4152 | The basic idea here is to examine all the relocations looking for | |
4153 | PC-relative calls to a target that is unreachable with a "bl" | |
4154 | instruction. */ | |
4155 | ||
4156 | bfd_boolean | |
4157 | elf32_arm_size_stubs (bfd *output_bfd, | |
4158 | bfd *stub_bfd, | |
4159 | struct bfd_link_info *info, | |
4160 | bfd_signed_vma group_size, | |
4161 | asection * (*add_stub_section) (const char *, asection *), | |
4162 | void (*layout_sections_again) (void)) | |
4163 | { | |
4164 | bfd_size_type stub_group_size; | |
07d72278 | 4165 | bfd_boolean stubs_always_after_branch; |
906e58ca NC |
4166 | bfd_boolean stub_changed = 0; |
4167 | struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info); | |
48229727 JB |
4168 | struct a8_erratum_fix *a8_fixes = NULL; |
4169 | unsigned int num_a8_fixes = 0, prev_num_a8_fixes = 0, a8_fix_table_size = 10; | |
4170 | struct a8_erratum_reloc *a8_relocs = NULL; | |
4171 | unsigned int num_a8_relocs = 0, a8_reloc_table_size = 10, i; | |
4172 | ||
4173 | if (htab->fix_cortex_a8) | |
4174 | { | |
4175 | a8_fixes = bfd_zmalloc (sizeof (struct a8_erratum_fix) | |
4176 | * a8_fix_table_size); | |
4177 | a8_relocs = bfd_zmalloc (sizeof (struct a8_erratum_reloc) | |
4178 | * a8_reloc_table_size); | |
4179 | } | |
906e58ca NC |
4180 | |
4181 | /* Propagate mach to stub bfd, because it may not have been | |
4182 | finalized when we created stub_bfd. */ | |
4183 | bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd), | |
4184 | bfd_get_mach (output_bfd)); | |
4185 | ||
4186 | /* Stash our params away. */ | |
4187 | htab->stub_bfd = stub_bfd; | |
4188 | htab->add_stub_section = add_stub_section; | |
4189 | htab->layout_sections_again = layout_sections_again; | |
07d72278 | 4190 | stubs_always_after_branch = group_size < 0; |
48229727 JB |
4191 | |
4192 | /* The Cortex-A8 erratum fix depends on stubs not being in the same 4K page | |
4193 | as the first half of a 32-bit branch straddling two 4K pages. This is a | |
4194 | crude way of enforcing that. */ | |
4195 | if (htab->fix_cortex_a8) | |
4196 | stubs_always_after_branch = 1; | |
4197 | ||
906e58ca NC |
4198 | if (group_size < 0) |
4199 | stub_group_size = -group_size; | |
4200 | else | |
4201 | stub_group_size = group_size; | |
4202 | ||
4203 | if (stub_group_size == 1) | |
4204 | { | |
4205 | /* Default values. */ | |
4206 | /* Thumb branch range is +-4MB has to be used as the default | |
4207 | maximum size (a given section can contain both ARM and Thumb | |
4208 | code, so the worst case has to be taken into account). | |
4209 | ||
4210 | This value is 24K less than that, which allows for 2025 | |
4211 | 12-byte stubs. If we exceed that, then we will fail to link. | |
4212 | The user will have to relink with an explicit group size | |
4213 | option. */ | |
4214 | stub_group_size = 4170000; | |
4215 | } | |
4216 | ||
07d72278 | 4217 | group_sections (htab, stub_group_size, stubs_always_after_branch); |
906e58ca NC |
4218 | |
4219 | while (1) | |
4220 | { | |
4221 | bfd *input_bfd; | |
4222 | unsigned int bfd_indx; | |
4223 | asection *stub_sec; | |
4224 | ||
48229727 JB |
4225 | num_a8_fixes = 0; |
4226 | ||
906e58ca NC |
4227 | for (input_bfd = info->input_bfds, bfd_indx = 0; |
4228 | input_bfd != NULL; | |
4229 | input_bfd = input_bfd->link_next, bfd_indx++) | |
4230 | { | |
4231 | Elf_Internal_Shdr *symtab_hdr; | |
4232 | asection *section; | |
4233 | Elf_Internal_Sym *local_syms = NULL; | |
4234 | ||
48229727 JB |
4235 | num_a8_relocs = 0; |
4236 | ||
906e58ca NC |
4237 | /* We'll need the symbol table in a second. */ |
4238 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
4239 | if (symtab_hdr->sh_info == 0) | |
4240 | continue; | |
4241 | ||
4242 | /* Walk over each section attached to the input bfd. */ | |
4243 | for (section = input_bfd->sections; | |
4244 | section != NULL; | |
4245 | section = section->next) | |
4246 | { | |
4247 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
4248 | ||
4249 | /* If there aren't any relocs, then there's nothing more | |
4250 | to do. */ | |
4251 | if ((section->flags & SEC_RELOC) == 0 | |
4252 | || section->reloc_count == 0 | |
4253 | || (section->flags & SEC_CODE) == 0) | |
4254 | continue; | |
4255 | ||
4256 | /* If this section is a link-once section that will be | |
4257 | discarded, then don't create any stubs. */ | |
4258 | if (section->output_section == NULL | |
4259 | || section->output_section->owner != output_bfd) | |
4260 | continue; | |
4261 | ||
4262 | /* Get the relocs. */ | |
4263 | internal_relocs | |
4264 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, | |
4265 | NULL, info->keep_memory); | |
4266 | if (internal_relocs == NULL) | |
4267 | goto error_ret_free_local; | |
4268 | ||
4269 | /* Now examine each relocation. */ | |
4270 | irela = internal_relocs; | |
4271 | irelaend = irela + section->reloc_count; | |
4272 | for (; irela < irelaend; irela++) | |
4273 | { | |
4274 | unsigned int r_type, r_indx; | |
4275 | enum elf32_arm_stub_type stub_type; | |
4276 | struct elf32_arm_stub_hash_entry *stub_entry; | |
4277 | asection *sym_sec; | |
4278 | bfd_vma sym_value; | |
4279 | bfd_vma destination; | |
4280 | struct elf32_arm_link_hash_entry *hash; | |
7413f23f | 4281 | const char *sym_name; |
906e58ca NC |
4282 | char *stub_name; |
4283 | const asection *id_sec; | |
4284 | unsigned char st_type; | |
48229727 | 4285 | bfd_boolean created_stub = FALSE; |
906e58ca NC |
4286 | |
4287 | r_type = ELF32_R_TYPE (irela->r_info); | |
4288 | r_indx = ELF32_R_SYM (irela->r_info); | |
4289 | ||
4290 | if (r_type >= (unsigned int) R_ARM_max) | |
4291 | { | |
4292 | bfd_set_error (bfd_error_bad_value); | |
4293 | error_ret_free_internal: | |
4294 | if (elf_section_data (section)->relocs == NULL) | |
4295 | free (internal_relocs); | |
4296 | goto error_ret_free_local; | |
4297 | } | |
4298 | ||
155d87d7 | 4299 | /* Only look for stubs on branch instructions. */ |
906e58ca | 4300 | if ((r_type != (unsigned int) R_ARM_CALL) |
155d87d7 CL |
4301 | && (r_type != (unsigned int) R_ARM_THM_CALL) |
4302 | && (r_type != (unsigned int) R_ARM_JUMP24) | |
48229727 JB |
4303 | && (r_type != (unsigned int) R_ARM_THM_JUMP19) |
4304 | && (r_type != (unsigned int) R_ARM_THM_XPC22) | |
155d87d7 CL |
4305 | && (r_type != (unsigned int) R_ARM_THM_JUMP24) |
4306 | && (r_type != (unsigned int) R_ARM_PLT32)) | |
906e58ca NC |
4307 | continue; |
4308 | ||
4309 | /* Now determine the call target, its name, value, | |
4310 | section. */ | |
4311 | sym_sec = NULL; | |
4312 | sym_value = 0; | |
4313 | destination = 0; | |
4314 | hash = NULL; | |
7413f23f | 4315 | sym_name = NULL; |
906e58ca NC |
4316 | if (r_indx < symtab_hdr->sh_info) |
4317 | { | |
4318 | /* It's a local symbol. */ | |
4319 | Elf_Internal_Sym *sym; | |
4320 | Elf_Internal_Shdr *hdr; | |
4321 | ||
4322 | if (local_syms == NULL) | |
4323 | { | |
4324 | local_syms | |
4325 | = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4326 | if (local_syms == NULL) | |
4327 | local_syms | |
4328 | = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
4329 | symtab_hdr->sh_info, 0, | |
4330 | NULL, NULL, NULL); | |
4331 | if (local_syms == NULL) | |
4332 | goto error_ret_free_internal; | |
4333 | } | |
4334 | ||
4335 | sym = local_syms + r_indx; | |
4336 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
4337 | sym_sec = hdr->bfd_section; | |
4338 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
4339 | sym_value = sym->st_value; | |
4340 | destination = (sym_value + irela->r_addend | |
4341 | + sym_sec->output_offset | |
4342 | + sym_sec->output_section->vma); | |
4343 | st_type = ELF_ST_TYPE (sym->st_info); | |
7413f23f DJ |
4344 | sym_name |
4345 | = bfd_elf_string_from_elf_section (input_bfd, | |
4346 | symtab_hdr->sh_link, | |
4347 | sym->st_name); | |
906e58ca NC |
4348 | } |
4349 | else | |
4350 | { | |
4351 | /* It's an external symbol. */ | |
4352 | int e_indx; | |
4353 | ||
4354 | e_indx = r_indx - symtab_hdr->sh_info; | |
4355 | hash = ((struct elf32_arm_link_hash_entry *) | |
4356 | elf_sym_hashes (input_bfd)[e_indx]); | |
4357 | ||
4358 | while (hash->root.root.type == bfd_link_hash_indirect | |
4359 | || hash->root.root.type == bfd_link_hash_warning) | |
4360 | hash = ((struct elf32_arm_link_hash_entry *) | |
4361 | hash->root.root.u.i.link); | |
4362 | ||
4363 | if (hash->root.root.type == bfd_link_hash_defined | |
4364 | || hash->root.root.type == bfd_link_hash_defweak) | |
4365 | { | |
4366 | sym_sec = hash->root.root.u.def.section; | |
4367 | sym_value = hash->root.root.u.def.value; | |
4368 | if (sym_sec->output_section != NULL) | |
4369 | destination = (sym_value + irela->r_addend | |
4370 | + sym_sec->output_offset | |
4371 | + sym_sec->output_section->vma); | |
4372 | } | |
69c5861e CL |
4373 | else if ((hash->root.root.type == bfd_link_hash_undefined) |
4374 | || (hash->root.root.type == bfd_link_hash_undefweak)) | |
4375 | { | |
4376 | /* For a shared library, use the PLT stub as | |
4377 | target address to decide whether a long | |
4378 | branch stub is needed. | |
4379 | For absolute code, they cannot be handled. */ | |
4380 | struct elf32_arm_link_hash_table *globals = | |
4381 | elf32_arm_hash_table (info); | |
4382 | ||
4383 | if (globals->splt != NULL && hash != NULL | |
4384 | && hash->root.plt.offset != (bfd_vma) -1) | |
4385 | { | |
4386 | sym_sec = globals->splt; | |
4387 | sym_value = hash->root.plt.offset; | |
4388 | if (sym_sec->output_section != NULL) | |
4389 | destination = (sym_value | |
4390 | + sym_sec->output_offset | |
4391 | + sym_sec->output_section->vma); | |
4392 | } | |
4393 | else | |
4394 | continue; | |
4395 | } | |
906e58ca NC |
4396 | else |
4397 | { | |
4398 | bfd_set_error (bfd_error_bad_value); | |
4399 | goto error_ret_free_internal; | |
4400 | } | |
4401 | st_type = ELF_ST_TYPE (hash->root.type); | |
7413f23f | 4402 | sym_name = hash->root.root.root.string; |
906e58ca NC |
4403 | } |
4404 | ||
48229727 | 4405 | do |
7413f23f | 4406 | { |
48229727 JB |
4407 | /* Determine what (if any) linker stub is needed. */ |
4408 | stub_type = arm_type_of_stub (info, section, irela, | |
4409 | st_type, hash, | |
4410 | destination, sym_sec, | |
4411 | input_bfd, sym_name); | |
4412 | if (stub_type == arm_stub_none) | |
4413 | break; | |
4414 | ||
4415 | /* Support for grouping stub sections. */ | |
4416 | id_sec = htab->stub_group[section->id].link_sec; | |
4417 | ||
4418 | /* Get the name of this stub. */ | |
4419 | stub_name = elf32_arm_stub_name (id_sec, sym_sec, hash, | |
4420 | irela); | |
4421 | if (!stub_name) | |
4422 | goto error_ret_free_internal; | |
4423 | ||
4424 | /* We've either created a stub for this reloc already, | |
4425 | or we are about to. */ | |
4426 | created_stub = TRUE; | |
4427 | ||
4428 | stub_entry = arm_stub_hash_lookup | |
4429 | (&htab->stub_hash_table, stub_name, | |
4430 | FALSE, FALSE); | |
4431 | if (stub_entry != NULL) | |
4432 | { | |
4433 | /* The proper stub has already been created. */ | |
4434 | free (stub_name); | |
4435 | break; | |
4436 | } | |
7413f23f | 4437 | |
48229727 JB |
4438 | stub_entry = elf32_arm_add_stub (stub_name, section, |
4439 | htab); | |
4440 | if (stub_entry == NULL) | |
4441 | { | |
4442 | free (stub_name); | |
4443 | goto error_ret_free_internal; | |
4444 | } | |
7413f23f | 4445 | |
48229727 JB |
4446 | stub_entry->target_value = sym_value; |
4447 | stub_entry->target_section = sym_sec; | |
4448 | stub_entry->stub_type = stub_type; | |
4449 | stub_entry->h = hash; | |
4450 | stub_entry->st_type = st_type; | |
4451 | ||
4452 | if (sym_name == NULL) | |
4453 | sym_name = "unnamed"; | |
4454 | stub_entry->output_name | |
4455 | = bfd_alloc (htab->stub_bfd, | |
4456 | sizeof (THUMB2ARM_GLUE_ENTRY_NAME) | |
4457 | + strlen (sym_name)); | |
4458 | if (stub_entry->output_name == NULL) | |
4459 | { | |
4460 | free (stub_name); | |
4461 | goto error_ret_free_internal; | |
4462 | } | |
4463 | ||
4464 | /* For historical reasons, use the existing names for | |
4465 | ARM-to-Thumb and Thumb-to-ARM stubs. */ | |
4466 | if ( ((r_type == (unsigned int) R_ARM_THM_CALL) | |
4467 | || (r_type == (unsigned int) R_ARM_THM_JUMP24)) | |
4468 | && st_type != STT_ARM_TFUNC) | |
4469 | sprintf (stub_entry->output_name, | |
4470 | THUMB2ARM_GLUE_ENTRY_NAME, sym_name); | |
4471 | else if ( ((r_type == (unsigned int) R_ARM_CALL) | |
4472 | || (r_type == (unsigned int) R_ARM_JUMP24)) | |
4473 | && st_type == STT_ARM_TFUNC) | |
4474 | sprintf (stub_entry->output_name, | |
4475 | ARM2THUMB_GLUE_ENTRY_NAME, sym_name); | |
4476 | else | |
4477 | sprintf (stub_entry->output_name, STUB_ENTRY_NAME, | |
4478 | sym_name); | |
4479 | ||
4480 | stub_changed = TRUE; | |
4481 | } | |
4482 | while (0); | |
4483 | ||
4484 | /* Look for relocations which might trigger Cortex-A8 | |
4485 | erratum. */ | |
4486 | if (htab->fix_cortex_a8 | |
4487 | && (r_type == (unsigned int) R_ARM_THM_JUMP24 | |
4488 | || r_type == (unsigned int) R_ARM_THM_JUMP19 | |
4489 | || r_type == (unsigned int) R_ARM_THM_CALL | |
4490 | || r_type == (unsigned int) R_ARM_THM_XPC22)) | |
4491 | { | |
4492 | bfd_vma from = section->output_section->vma | |
4493 | + section->output_offset | |
4494 | + irela->r_offset; | |
4495 | ||
4496 | if ((from & 0xfff) == 0xffe) | |
4497 | { | |
4498 | /* Found a candidate. Note we haven't checked the | |
4499 | destination is within 4K here: if we do so (and | |
4500 | don't create an entry in a8_relocs) we can't tell | |
4501 | that a branch should have been relocated when | |
4502 | scanning later. */ | |
4503 | if (num_a8_relocs == a8_reloc_table_size) | |
4504 | { | |
4505 | a8_reloc_table_size *= 2; | |
4506 | a8_relocs = bfd_realloc (a8_relocs, | |
4507 | sizeof (struct a8_erratum_reloc) | |
4508 | * a8_reloc_table_size); | |
4509 | } | |
4510 | ||
4511 | a8_relocs[num_a8_relocs].from = from; | |
4512 | a8_relocs[num_a8_relocs].destination = destination; | |
4513 | a8_relocs[num_a8_relocs].r_type = r_type; | |
4514 | a8_relocs[num_a8_relocs].st_type = st_type; | |
4515 | a8_relocs[num_a8_relocs].sym_name = sym_name; | |
4516 | a8_relocs[num_a8_relocs].non_a8_stub = created_stub; | |
4517 | ||
4518 | num_a8_relocs++; | |
4519 | } | |
4520 | } | |
906e58ca NC |
4521 | } |
4522 | ||
48229727 JB |
4523 | /* We're done with the internal relocs, free them. */ |
4524 | if (elf_section_data (section)->relocs == NULL) | |
4525 | free (internal_relocs); | |
4526 | } | |
4527 | ||
4528 | if (htab->fix_cortex_a8) | |
4529 | { | |
4530 | /* Sort relocs which might apply to Cortex-A8 erratum. */ | |
4531 | qsort (a8_relocs, num_a8_relocs, sizeof (struct a8_erratum_reloc), | |
4532 | &a8_reloc_compare); | |
4533 | ||
4534 | /* Scan for branches which might trigger Cortex-A8 erratum. */ | |
4535 | if (cortex_a8_erratum_scan (input_bfd, info, &a8_fixes, | |
4536 | &num_a8_fixes, &a8_fix_table_size, | |
4537 | a8_relocs, num_a8_relocs) != 0) | |
4538 | goto error_ret_free_local; | |
5e681ec4 | 4539 | } |
5e681ec4 PB |
4540 | } |
4541 | ||
48229727 JB |
4542 | if (htab->fix_cortex_a8 && num_a8_fixes != prev_num_a8_fixes) |
4543 | stub_changed = TRUE; | |
4544 | ||
906e58ca NC |
4545 | if (!stub_changed) |
4546 | break; | |
5e681ec4 | 4547 | |
906e58ca NC |
4548 | /* OK, we've added some stubs. Find out the new size of the |
4549 | stub sections. */ | |
4550 | for (stub_sec = htab->stub_bfd->sections; | |
4551 | stub_sec != NULL; | |
4552 | stub_sec = stub_sec->next) | |
3e6b1042 DJ |
4553 | { |
4554 | /* Ignore non-stub sections. */ | |
4555 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
4556 | continue; | |
4557 | ||
4558 | stub_sec->size = 0; | |
4559 | } | |
b34b2d70 | 4560 | |
906e58ca NC |
4561 | bfd_hash_traverse (&htab->stub_hash_table, arm_size_one_stub, htab); |
4562 | ||
48229727 JB |
4563 | /* Add Cortex-A8 erratum veneers to stub section sizes too. */ |
4564 | if (htab->fix_cortex_a8) | |
4565 | for (i = 0; i < num_a8_fixes; i++) | |
4566 | { | |
4567 | stub_sec = elf32_arm_create_or_find_stub_sec (NULL, | |
4568 | a8_fixes[i].section, htab); | |
4569 | ||
4570 | if (stub_sec == NULL) | |
4571 | goto error_ret_free_local; | |
4572 | ||
4573 | stub_sec->size | |
4574 | += find_stub_size_and_template (a8_fixes[i].stub_type, NULL, | |
4575 | NULL); | |
4576 | } | |
4577 | ||
4578 | ||
906e58ca NC |
4579 | /* Ask the linker to do its stuff. */ |
4580 | (*htab->layout_sections_again) (); | |
4581 | stub_changed = FALSE; | |
48229727 | 4582 | prev_num_a8_fixes = num_a8_fixes; |
ba93b8ac DJ |
4583 | } |
4584 | ||
48229727 JB |
4585 | /* Add stubs for Cortex-A8 erratum fixes now. */ |
4586 | if (htab->fix_cortex_a8) | |
4587 | { | |
4588 | for (i = 0; i < num_a8_fixes; i++) | |
4589 | { | |
4590 | struct elf32_arm_stub_hash_entry *stub_entry; | |
4591 | char *stub_name = a8_fixes[i].stub_name; | |
4592 | asection *section = a8_fixes[i].section; | |
4593 | unsigned int section_id = a8_fixes[i].section->id; | |
4594 | asection *link_sec = htab->stub_group[section_id].link_sec; | |
4595 | asection *stub_sec = htab->stub_group[section_id].stub_sec; | |
4596 | const insn_sequence *template; | |
4597 | int template_size, size = 0; | |
4598 | ||
4599 | stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
4600 | TRUE, FALSE); | |
4601 | if (stub_entry == NULL) | |
4602 | { | |
4603 | (*_bfd_error_handler) (_("%s: cannot create stub entry %s"), | |
4604 | section->owner, | |
4605 | stub_name); | |
4606 | return FALSE; | |
4607 | } | |
4608 | ||
4609 | stub_entry->stub_sec = stub_sec; | |
4610 | stub_entry->stub_offset = 0; | |
4611 | stub_entry->id_sec = link_sec; | |
4612 | stub_entry->stub_type = a8_fixes[i].stub_type; | |
4613 | stub_entry->target_section = a8_fixes[i].section; | |
4614 | stub_entry->target_value = a8_fixes[i].offset; | |
4615 | stub_entry->target_addend = a8_fixes[i].addend; | |
4616 | stub_entry->orig_insn = a8_fixes[i].orig_insn; | |
4617 | stub_entry->st_type = STT_ARM_TFUNC; | |
4618 | ||
4619 | size = find_stub_size_and_template (a8_fixes[i].stub_type, &template, | |
4620 | &template_size); | |
4621 | ||
4622 | stub_entry->stub_size = size; | |
4623 | stub_entry->stub_template = template; | |
4624 | stub_entry->stub_template_size = template_size; | |
4625 | } | |
4626 | ||
4627 | /* Stash the Cortex-A8 erratum fix array for use later in | |
4628 | elf32_arm_write_section(). */ | |
4629 | htab->a8_erratum_fixes = a8_fixes; | |
4630 | htab->num_a8_erratum_fixes = num_a8_fixes; | |
4631 | } | |
4632 | else | |
4633 | { | |
4634 | htab->a8_erratum_fixes = NULL; | |
4635 | htab->num_a8_erratum_fixes = 0; | |
4636 | } | |
906e58ca NC |
4637 | return TRUE; |
4638 | ||
4639 | error_ret_free_local: | |
4640 | return FALSE; | |
5e681ec4 PB |
4641 | } |
4642 | ||
906e58ca NC |
4643 | /* Build all the stubs associated with the current output file. The |
4644 | stubs are kept in a hash table attached to the main linker hash | |
4645 | table. We also set up the .plt entries for statically linked PIC | |
4646 | functions here. This function is called via arm_elf_finish in the | |
4647 | linker. */ | |
252b5132 | 4648 | |
906e58ca NC |
4649 | bfd_boolean |
4650 | elf32_arm_build_stubs (struct bfd_link_info *info) | |
252b5132 | 4651 | { |
906e58ca NC |
4652 | asection *stub_sec; |
4653 | struct bfd_hash_table *table; | |
4654 | struct elf32_arm_link_hash_table *htab; | |
252b5132 | 4655 | |
906e58ca | 4656 | htab = elf32_arm_hash_table (info); |
252b5132 | 4657 | |
906e58ca NC |
4658 | for (stub_sec = htab->stub_bfd->sections; |
4659 | stub_sec != NULL; | |
4660 | stub_sec = stub_sec->next) | |
252b5132 | 4661 | { |
906e58ca NC |
4662 | bfd_size_type size; |
4663 | ||
8029a119 | 4664 | /* Ignore non-stub sections. */ |
906e58ca NC |
4665 | if (!strstr (stub_sec->name, STUB_SUFFIX)) |
4666 | continue; | |
4667 | ||
4668 | /* Allocate memory to hold the linker stubs. */ | |
4669 | size = stub_sec->size; | |
4670 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, size); | |
4671 | if (stub_sec->contents == NULL && size != 0) | |
4672 | return FALSE; | |
4673 | stub_sec->size = 0; | |
252b5132 RH |
4674 | } |
4675 | ||
906e58ca NC |
4676 | /* Build the stubs as directed by the stub hash table. */ |
4677 | table = &htab->stub_hash_table; | |
4678 | bfd_hash_traverse (table, arm_build_one_stub, info); | |
252b5132 | 4679 | |
906e58ca | 4680 | return TRUE; |
252b5132 RH |
4681 | } |
4682 | ||
9b485d32 NC |
4683 | /* Locate the Thumb encoded calling stub for NAME. */ |
4684 | ||
252b5132 | 4685 | static struct elf_link_hash_entry * |
57e8b36a NC |
4686 | find_thumb_glue (struct bfd_link_info *link_info, |
4687 | const char *name, | |
f2a9dd69 | 4688 | char **error_message) |
252b5132 RH |
4689 | { |
4690 | char *tmp_name; | |
4691 | struct elf_link_hash_entry *hash; | |
4692 | struct elf32_arm_link_hash_table *hash_table; | |
4693 | ||
4694 | /* We need a pointer to the armelf specific hash table. */ | |
4695 | hash_table = elf32_arm_hash_table (link_info); | |
4696 | ||
57e8b36a NC |
4697 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
4698 | + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1); | |
252b5132 RH |
4699 | |
4700 | BFD_ASSERT (tmp_name); | |
4701 | ||
4702 | sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); | |
4703 | ||
4704 | hash = elf_link_hash_lookup | |
b34976b6 | 4705 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 | 4706 | |
b1657152 AM |
4707 | if (hash == NULL |
4708 | && asprintf (error_message, _("unable to find THUMB glue '%s' for '%s'"), | |
4709 | tmp_name, name) == -1) | |
4710 | *error_message = (char *) bfd_errmsg (bfd_error_system_call); | |
252b5132 RH |
4711 | |
4712 | free (tmp_name); | |
4713 | ||
4714 | return hash; | |
4715 | } | |
4716 | ||
9b485d32 NC |
4717 | /* Locate the ARM encoded calling stub for NAME. */ |
4718 | ||
252b5132 | 4719 | static struct elf_link_hash_entry * |
57e8b36a NC |
4720 | find_arm_glue (struct bfd_link_info *link_info, |
4721 | const char *name, | |
f2a9dd69 | 4722 | char **error_message) |
252b5132 RH |
4723 | { |
4724 | char *tmp_name; | |
4725 | struct elf_link_hash_entry *myh; | |
4726 | struct elf32_arm_link_hash_table *hash_table; | |
4727 | ||
4728 | /* We need a pointer to the elfarm specific hash table. */ | |
4729 | hash_table = elf32_arm_hash_table (link_info); | |
4730 | ||
57e8b36a NC |
4731 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
4732 | + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1); | |
252b5132 RH |
4733 | |
4734 | BFD_ASSERT (tmp_name); | |
4735 | ||
4736 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); | |
4737 | ||
4738 | myh = elf_link_hash_lookup | |
b34976b6 | 4739 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 | 4740 | |
b1657152 AM |
4741 | if (myh == NULL |
4742 | && asprintf (error_message, _("unable to find ARM glue '%s' for '%s'"), | |
4743 | tmp_name, name) == -1) | |
4744 | *error_message = (char *) bfd_errmsg (bfd_error_system_call); | |
252b5132 RH |
4745 | |
4746 | free (tmp_name); | |
4747 | ||
4748 | return myh; | |
4749 | } | |
4750 | ||
8f6277f5 | 4751 | /* ARM->Thumb glue (static images): |
252b5132 RH |
4752 | |
4753 | .arm | |
4754 | __func_from_arm: | |
4755 | ldr r12, __func_addr | |
4756 | bx r12 | |
4757 | __func_addr: | |
906e58ca | 4758 | .word func @ behave as if you saw a ARM_32 reloc. |
252b5132 | 4759 | |
26079076 PB |
4760 | (v5t static images) |
4761 | .arm | |
4762 | __func_from_arm: | |
4763 | ldr pc, __func_addr | |
4764 | __func_addr: | |
906e58ca | 4765 | .word func @ behave as if you saw a ARM_32 reloc. |
26079076 | 4766 | |
8f6277f5 PB |
4767 | (relocatable images) |
4768 | .arm | |
4769 | __func_from_arm: | |
4770 | ldr r12, __func_offset | |
4771 | add r12, r12, pc | |
4772 | bx r12 | |
4773 | __func_offset: | |
8029a119 | 4774 | .word func - . */ |
8f6277f5 PB |
4775 | |
4776 | #define ARM2THUMB_STATIC_GLUE_SIZE 12 | |
252b5132 RH |
4777 | static const insn32 a2t1_ldr_insn = 0xe59fc000; |
4778 | static const insn32 a2t2_bx_r12_insn = 0xe12fff1c; | |
4779 | static const insn32 a2t3_func_addr_insn = 0x00000001; | |
4780 | ||
26079076 PB |
4781 | #define ARM2THUMB_V5_STATIC_GLUE_SIZE 8 |
4782 | static const insn32 a2t1v5_ldr_insn = 0xe51ff004; | |
4783 | static const insn32 a2t2v5_func_addr_insn = 0x00000001; | |
4784 | ||
8f6277f5 PB |
4785 | #define ARM2THUMB_PIC_GLUE_SIZE 16 |
4786 | static const insn32 a2t1p_ldr_insn = 0xe59fc004; | |
4787 | static const insn32 a2t2p_add_pc_insn = 0xe08cc00f; | |
4788 | static const insn32 a2t3p_bx_r12_insn = 0xe12fff1c; | |
4789 | ||
9b485d32 | 4790 | /* Thumb->ARM: Thumb->(non-interworking aware) ARM |
252b5132 | 4791 | |
8029a119 NC |
4792 | .thumb .thumb |
4793 | .align 2 .align 2 | |
4794 | __func_from_thumb: __func_from_thumb: | |
4795 | bx pc push {r6, lr} | |
4796 | nop ldr r6, __func_addr | |
4797 | .arm mov lr, pc | |
4798 | b func bx r6 | |
fcef9eb7 NC |
4799 | .arm |
4800 | ;; back_to_thumb | |
4801 | ldmia r13! {r6, lr} | |
4802 | bx lr | |
8029a119 NC |
4803 | __func_addr: |
4804 | .word func */ | |
252b5132 RH |
4805 | |
4806 | #define THUMB2ARM_GLUE_SIZE 8 | |
4807 | static const insn16 t2a1_bx_pc_insn = 0x4778; | |
4808 | static const insn16 t2a2_noop_insn = 0x46c0; | |
4809 | static const insn32 t2a3_b_insn = 0xea000000; | |
4810 | ||
c7b8f16e JB |
4811 | #define VFP11_ERRATUM_VENEER_SIZE 8 |
4812 | ||
845b51d6 PB |
4813 | #define ARM_BX_VENEER_SIZE 12 |
4814 | static const insn32 armbx1_tst_insn = 0xe3100001; | |
4815 | static const insn32 armbx2_moveq_insn = 0x01a0f000; | |
4816 | static const insn32 armbx3_bx_insn = 0xe12fff10; | |
4817 | ||
7e392df6 | 4818 | #ifndef ELFARM_NABI_C_INCLUDED |
8029a119 NC |
4819 | static void |
4820 | arm_allocate_glue_section_space (bfd * abfd, bfd_size_type size, const char * name) | |
252b5132 RH |
4821 | { |
4822 | asection * s; | |
8029a119 | 4823 | bfd_byte * contents; |
252b5132 | 4824 | |
8029a119 | 4825 | if (size == 0) |
3e6b1042 DJ |
4826 | { |
4827 | /* Do not include empty glue sections in the output. */ | |
4828 | if (abfd != NULL) | |
4829 | { | |
4830 | s = bfd_get_section_by_name (abfd, name); | |
4831 | if (s != NULL) | |
4832 | s->flags |= SEC_EXCLUDE; | |
4833 | } | |
4834 | return; | |
4835 | } | |
252b5132 | 4836 | |
8029a119 | 4837 | BFD_ASSERT (abfd != NULL); |
252b5132 | 4838 | |
8029a119 NC |
4839 | s = bfd_get_section_by_name (abfd, name); |
4840 | BFD_ASSERT (s != NULL); | |
252b5132 | 4841 | |
8029a119 | 4842 | contents = bfd_alloc (abfd, size); |
252b5132 | 4843 | |
8029a119 NC |
4844 | BFD_ASSERT (s->size == size); |
4845 | s->contents = contents; | |
4846 | } | |
906e58ca | 4847 | |
8029a119 NC |
4848 | bfd_boolean |
4849 | bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info * info) | |
4850 | { | |
4851 | struct elf32_arm_link_hash_table * globals; | |
906e58ca | 4852 | |
8029a119 NC |
4853 | globals = elf32_arm_hash_table (info); |
4854 | BFD_ASSERT (globals != NULL); | |
906e58ca | 4855 | |
8029a119 NC |
4856 | arm_allocate_glue_section_space (globals->bfd_of_glue_owner, |
4857 | globals->arm_glue_size, | |
4858 | ARM2THUMB_GLUE_SECTION_NAME); | |
906e58ca | 4859 | |
8029a119 NC |
4860 | arm_allocate_glue_section_space (globals->bfd_of_glue_owner, |
4861 | globals->thumb_glue_size, | |
4862 | THUMB2ARM_GLUE_SECTION_NAME); | |
252b5132 | 4863 | |
8029a119 NC |
4864 | arm_allocate_glue_section_space (globals->bfd_of_glue_owner, |
4865 | globals->vfp11_erratum_glue_size, | |
4866 | VFP11_ERRATUM_VENEER_SECTION_NAME); | |
845b51d6 | 4867 | |
8029a119 NC |
4868 | arm_allocate_glue_section_space (globals->bfd_of_glue_owner, |
4869 | globals->bx_glue_size, | |
845b51d6 PB |
4870 | ARM_BX_GLUE_SECTION_NAME); |
4871 | ||
b34976b6 | 4872 | return TRUE; |
252b5132 RH |
4873 | } |
4874 | ||
a4fd1a8e | 4875 | /* Allocate space and symbols for calling a Thumb function from Arm mode. |
906e58ca NC |
4876 | returns the symbol identifying the stub. */ |
4877 | ||
a4fd1a8e | 4878 | static struct elf_link_hash_entry * |
57e8b36a NC |
4879 | record_arm_to_thumb_glue (struct bfd_link_info * link_info, |
4880 | struct elf_link_hash_entry * h) | |
252b5132 RH |
4881 | { |
4882 | const char * name = h->root.root.string; | |
63b0f745 | 4883 | asection * s; |
252b5132 RH |
4884 | char * tmp_name; |
4885 | struct elf_link_hash_entry * myh; | |
14a793b2 | 4886 | struct bfd_link_hash_entry * bh; |
252b5132 | 4887 | struct elf32_arm_link_hash_table * globals; |
dc810e39 | 4888 | bfd_vma val; |
2f475487 | 4889 | bfd_size_type size; |
252b5132 RH |
4890 | |
4891 | globals = elf32_arm_hash_table (link_info); | |
4892 | ||
4893 | BFD_ASSERT (globals != NULL); | |
4894 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
4895 | ||
4896 | s = bfd_get_section_by_name | |
4897 | (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME); | |
4898 | ||
252b5132 RH |
4899 | BFD_ASSERT (s != NULL); |
4900 | ||
57e8b36a | 4901 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1); |
252b5132 RH |
4902 | |
4903 | BFD_ASSERT (tmp_name); | |
4904 | ||
4905 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); | |
4906 | ||
4907 | myh = elf_link_hash_lookup | |
b34976b6 | 4908 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 RH |
4909 | |
4910 | if (myh != NULL) | |
4911 | { | |
9b485d32 | 4912 | /* We've already seen this guy. */ |
252b5132 | 4913 | free (tmp_name); |
a4fd1a8e | 4914 | return myh; |
252b5132 RH |
4915 | } |
4916 | ||
57e8b36a NC |
4917 | /* The only trick here is using hash_table->arm_glue_size as the value. |
4918 | Even though the section isn't allocated yet, this is where we will be | |
3dccd7b7 DJ |
4919 | putting it. The +1 on the value marks that the stub has not been |
4920 | output yet - not that it is a Thumb function. */ | |
14a793b2 | 4921 | bh = NULL; |
dc810e39 AM |
4922 | val = globals->arm_glue_size + 1; |
4923 | _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner, | |
4924 | tmp_name, BSF_GLOBAL, s, val, | |
b34976b6 | 4925 | NULL, TRUE, FALSE, &bh); |
252b5132 | 4926 | |
b7693d02 DJ |
4927 | myh = (struct elf_link_hash_entry *) bh; |
4928 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
4929 | myh->forced_local = 1; | |
4930 | ||
252b5132 RH |
4931 | free (tmp_name); |
4932 | ||
27e55c4d PB |
4933 | if (link_info->shared || globals->root.is_relocatable_executable |
4934 | || globals->pic_veneer) | |
2f475487 | 4935 | size = ARM2THUMB_PIC_GLUE_SIZE; |
26079076 PB |
4936 | else if (globals->use_blx) |
4937 | size = ARM2THUMB_V5_STATIC_GLUE_SIZE; | |
8f6277f5 | 4938 | else |
2f475487 AM |
4939 | size = ARM2THUMB_STATIC_GLUE_SIZE; |
4940 | ||
4941 | s->size += size; | |
4942 | globals->arm_glue_size += size; | |
252b5132 | 4943 | |
a4fd1a8e | 4944 | return myh; |
252b5132 RH |
4945 | } |
4946 | ||
845b51d6 PB |
4947 | /* Allocate space for ARMv4 BX veneers. */ |
4948 | ||
4949 | static void | |
4950 | record_arm_bx_glue (struct bfd_link_info * link_info, int reg) | |
4951 | { | |
4952 | asection * s; | |
4953 | struct elf32_arm_link_hash_table *globals; | |
4954 | char *tmp_name; | |
4955 | struct elf_link_hash_entry *myh; | |
4956 | struct bfd_link_hash_entry *bh; | |
4957 | bfd_vma val; | |
4958 | ||
4959 | /* BX PC does not need a veneer. */ | |
4960 | if (reg == 15) | |
4961 | return; | |
4962 | ||
4963 | globals = elf32_arm_hash_table (link_info); | |
4964 | ||
4965 | BFD_ASSERT (globals != NULL); | |
4966 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
4967 | ||
4968 | /* Check if this veneer has already been allocated. */ | |
4969 | if (globals->bx_glue_offset[reg]) | |
4970 | return; | |
4971 | ||
4972 | s = bfd_get_section_by_name | |
4973 | (globals->bfd_of_glue_owner, ARM_BX_GLUE_SECTION_NAME); | |
4974 | ||
4975 | BFD_ASSERT (s != NULL); | |
4976 | ||
4977 | /* Add symbol for veneer. */ | |
4978 | tmp_name = bfd_malloc ((bfd_size_type) strlen (ARM_BX_GLUE_ENTRY_NAME) + 1); | |
906e58ca | 4979 | |
845b51d6 | 4980 | BFD_ASSERT (tmp_name); |
906e58ca | 4981 | |
845b51d6 | 4982 | sprintf (tmp_name, ARM_BX_GLUE_ENTRY_NAME, reg); |
906e58ca | 4983 | |
845b51d6 PB |
4984 | myh = elf_link_hash_lookup |
4985 | (&(globals)->root, tmp_name, FALSE, FALSE, FALSE); | |
906e58ca | 4986 | |
845b51d6 | 4987 | BFD_ASSERT (myh == NULL); |
906e58ca | 4988 | |
845b51d6 PB |
4989 | bh = NULL; |
4990 | val = globals->bx_glue_size; | |
4991 | _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner, | |
4992 | tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val, | |
4993 | NULL, TRUE, FALSE, &bh); | |
4994 | ||
4995 | myh = (struct elf_link_hash_entry *) bh; | |
4996 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
4997 | myh->forced_local = 1; | |
4998 | ||
4999 | s->size += ARM_BX_VENEER_SIZE; | |
5000 | globals->bx_glue_offset[reg] = globals->bx_glue_size | 2; | |
5001 | globals->bx_glue_size += ARM_BX_VENEER_SIZE; | |
5002 | } | |
5003 | ||
5004 | ||
c7b8f16e JB |
5005 | /* Add an entry to the code/data map for section SEC. */ |
5006 | ||
5007 | static void | |
5008 | elf32_arm_section_map_add (asection *sec, char type, bfd_vma vma) | |
5009 | { | |
5010 | struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec); | |
5011 | unsigned int newidx; | |
906e58ca | 5012 | |
c7b8f16e JB |
5013 | if (sec_data->map == NULL) |
5014 | { | |
5015 | sec_data->map = bfd_malloc (sizeof (elf32_arm_section_map)); | |
5016 | sec_data->mapcount = 0; | |
5017 | sec_data->mapsize = 1; | |
5018 | } | |
906e58ca | 5019 | |
c7b8f16e | 5020 | newidx = sec_data->mapcount++; |
906e58ca | 5021 | |
c7b8f16e JB |
5022 | if (sec_data->mapcount > sec_data->mapsize) |
5023 | { | |
5024 | sec_data->mapsize *= 2; | |
515ef31d NC |
5025 | sec_data->map = bfd_realloc_or_free (sec_data->map, sec_data->mapsize |
5026 | * sizeof (elf32_arm_section_map)); | |
5027 | } | |
5028 | ||
5029 | if (sec_data->map) | |
5030 | { | |
5031 | sec_data->map[newidx].vma = vma; | |
5032 | sec_data->map[newidx].type = type; | |
c7b8f16e | 5033 | } |
c7b8f16e JB |
5034 | } |
5035 | ||
5036 | ||
5037 | /* Record information about a VFP11 denorm-erratum veneer. Only ARM-mode | |
5038 | veneers are handled for now. */ | |
5039 | ||
5040 | static bfd_vma | |
5041 | record_vfp11_erratum_veneer (struct bfd_link_info *link_info, | |
5042 | elf32_vfp11_erratum_list *branch, | |
5043 | bfd *branch_bfd, | |
5044 | asection *branch_sec, | |
5045 | unsigned int offset) | |
5046 | { | |
5047 | asection *s; | |
5048 | struct elf32_arm_link_hash_table *hash_table; | |
5049 | char *tmp_name; | |
5050 | struct elf_link_hash_entry *myh; | |
5051 | struct bfd_link_hash_entry *bh; | |
5052 | bfd_vma val; | |
5053 | struct _arm_elf_section_data *sec_data; | |
5054 | int errcount; | |
5055 | elf32_vfp11_erratum_list *newerr; | |
906e58ca | 5056 | |
c7b8f16e | 5057 | hash_table = elf32_arm_hash_table (link_info); |
906e58ca | 5058 | |
c7b8f16e JB |
5059 | BFD_ASSERT (hash_table != NULL); |
5060 | BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL); | |
906e58ca | 5061 | |
c7b8f16e JB |
5062 | s = bfd_get_section_by_name |
5063 | (hash_table->bfd_of_glue_owner, VFP11_ERRATUM_VENEER_SECTION_NAME); | |
906e58ca | 5064 | |
c7b8f16e | 5065 | sec_data = elf32_arm_section_data (s); |
906e58ca | 5066 | |
c7b8f16e | 5067 | BFD_ASSERT (s != NULL); |
906e58ca | 5068 | |
c7b8f16e JB |
5069 | tmp_name = bfd_malloc ((bfd_size_type) strlen |
5070 | (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10); | |
906e58ca | 5071 | |
c7b8f16e | 5072 | BFD_ASSERT (tmp_name); |
906e58ca | 5073 | |
c7b8f16e JB |
5074 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME, |
5075 | hash_table->num_vfp11_fixes); | |
906e58ca | 5076 | |
c7b8f16e JB |
5077 | myh = elf_link_hash_lookup |
5078 | (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE); | |
906e58ca | 5079 | |
c7b8f16e | 5080 | BFD_ASSERT (myh == NULL); |
906e58ca | 5081 | |
c7b8f16e JB |
5082 | bh = NULL; |
5083 | val = hash_table->vfp11_erratum_glue_size; | |
5084 | _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, | |
5085 | tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val, | |
5086 | NULL, TRUE, FALSE, &bh); | |
5087 | ||
5088 | myh = (struct elf_link_hash_entry *) bh; | |
5089 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
5090 | myh->forced_local = 1; | |
5091 | ||
5092 | /* Link veneer back to calling location. */ | |
5093 | errcount = ++(sec_data->erratumcount); | |
5094 | newerr = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list)); | |
906e58ca | 5095 | |
c7b8f16e JB |
5096 | newerr->type = VFP11_ERRATUM_ARM_VENEER; |
5097 | newerr->vma = -1; | |
5098 | newerr->u.v.branch = branch; | |
5099 | newerr->u.v.id = hash_table->num_vfp11_fixes; | |
5100 | branch->u.b.veneer = newerr; | |
5101 | ||
5102 | newerr->next = sec_data->erratumlist; | |
5103 | sec_data->erratumlist = newerr; | |
5104 | ||
5105 | /* A symbol for the return from the veneer. */ | |
5106 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r", | |
5107 | hash_table->num_vfp11_fixes); | |
5108 | ||
5109 | myh = elf_link_hash_lookup | |
5110 | (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE); | |
906e58ca | 5111 | |
c7b8f16e JB |
5112 | if (myh != NULL) |
5113 | abort (); | |
5114 | ||
5115 | bh = NULL; | |
5116 | val = offset + 4; | |
5117 | _bfd_generic_link_add_one_symbol (link_info, branch_bfd, tmp_name, BSF_LOCAL, | |
5118 | branch_sec, val, NULL, TRUE, FALSE, &bh); | |
906e58ca | 5119 | |
c7b8f16e JB |
5120 | myh = (struct elf_link_hash_entry *) bh; |
5121 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
5122 | myh->forced_local = 1; | |
5123 | ||
5124 | free (tmp_name); | |
906e58ca | 5125 | |
c7b8f16e JB |
5126 | /* Generate a mapping symbol for the veneer section, and explicitly add an |
5127 | entry for that symbol to the code/data map for the section. */ | |
5128 | if (hash_table->vfp11_erratum_glue_size == 0) | |
5129 | { | |
5130 | bh = NULL; | |
5131 | /* FIXME: Creates an ARM symbol. Thumb mode will need attention if it | |
5132 | ever requires this erratum fix. */ | |
5133 | _bfd_generic_link_add_one_symbol (link_info, | |
5134 | hash_table->bfd_of_glue_owner, "$a", | |
5135 | BSF_LOCAL, s, 0, NULL, | |
5136 | TRUE, FALSE, &bh); | |
5137 | ||
5138 | myh = (struct elf_link_hash_entry *) bh; | |
5139 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
5140 | myh->forced_local = 1; | |
906e58ca | 5141 | |
c7b8f16e JB |
5142 | /* The elf32_arm_init_maps function only cares about symbols from input |
5143 | BFDs. We must make a note of this generated mapping symbol | |
5144 | ourselves so that code byteswapping works properly in | |
5145 | elf32_arm_write_section. */ | |
5146 | elf32_arm_section_map_add (s, 'a', 0); | |
5147 | } | |
906e58ca | 5148 | |
c7b8f16e JB |
5149 | s->size += VFP11_ERRATUM_VENEER_SIZE; |
5150 | hash_table->vfp11_erratum_glue_size += VFP11_ERRATUM_VENEER_SIZE; | |
5151 | hash_table->num_vfp11_fixes++; | |
906e58ca | 5152 | |
c7b8f16e JB |
5153 | /* The offset of the veneer. */ |
5154 | return val; | |
5155 | } | |
5156 | ||
8029a119 | 5157 | #define ARM_GLUE_SECTION_FLAGS \ |
3e6b1042 DJ |
5158 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_CODE \ |
5159 | | SEC_READONLY | SEC_LINKER_CREATED) | |
8029a119 NC |
5160 | |
5161 | /* Create a fake section for use by the ARM backend of the linker. */ | |
5162 | ||
5163 | static bfd_boolean | |
5164 | arm_make_glue_section (bfd * abfd, const char * name) | |
5165 | { | |
5166 | asection * sec; | |
5167 | ||
5168 | sec = bfd_get_section_by_name (abfd, name); | |
5169 | if (sec != NULL) | |
5170 | /* Already made. */ | |
5171 | return TRUE; | |
5172 | ||
5173 | sec = bfd_make_section_with_flags (abfd, name, ARM_GLUE_SECTION_FLAGS); | |
5174 | ||
5175 | if (sec == NULL | |
5176 | || !bfd_set_section_alignment (abfd, sec, 2)) | |
5177 | return FALSE; | |
5178 | ||
5179 | /* Set the gc mark to prevent the section from being removed by garbage | |
5180 | collection, despite the fact that no relocs refer to this section. */ | |
5181 | sec->gc_mark = 1; | |
5182 | ||
5183 | return TRUE; | |
5184 | } | |
5185 | ||
8afb0e02 NC |
5186 | /* Add the glue sections to ABFD. This function is called from the |
5187 | linker scripts in ld/emultempl/{armelf}.em. */ | |
9b485d32 | 5188 | |
b34976b6 | 5189 | bfd_boolean |
57e8b36a NC |
5190 | bfd_elf32_arm_add_glue_sections_to_bfd (bfd *abfd, |
5191 | struct bfd_link_info *info) | |
252b5132 | 5192 | { |
8afb0e02 NC |
5193 | /* If we are only performing a partial |
5194 | link do not bother adding the glue. */ | |
1049f94e | 5195 | if (info->relocatable) |
b34976b6 | 5196 | return TRUE; |
252b5132 | 5197 | |
8029a119 NC |
5198 | return arm_make_glue_section (abfd, ARM2THUMB_GLUE_SECTION_NAME) |
5199 | && arm_make_glue_section (abfd, THUMB2ARM_GLUE_SECTION_NAME) | |
5200 | && arm_make_glue_section (abfd, VFP11_ERRATUM_VENEER_SECTION_NAME) | |
5201 | && arm_make_glue_section (abfd, ARM_BX_GLUE_SECTION_NAME); | |
8afb0e02 NC |
5202 | } |
5203 | ||
5204 | /* Select a BFD to be used to hold the sections used by the glue code. | |
5205 | This function is called from the linker scripts in ld/emultempl/ | |
8029a119 | 5206 | {armelf/pe}.em. */ |
8afb0e02 | 5207 | |
b34976b6 | 5208 | bfd_boolean |
57e8b36a | 5209 | bfd_elf32_arm_get_bfd_for_interworking (bfd *abfd, struct bfd_link_info *info) |
8afb0e02 NC |
5210 | { |
5211 | struct elf32_arm_link_hash_table *globals; | |
5212 | ||
5213 | /* If we are only performing a partial link | |
5214 | do not bother getting a bfd to hold the glue. */ | |
1049f94e | 5215 | if (info->relocatable) |
b34976b6 | 5216 | return TRUE; |
8afb0e02 | 5217 | |
b7693d02 DJ |
5218 | /* Make sure we don't attach the glue sections to a dynamic object. */ |
5219 | BFD_ASSERT (!(abfd->flags & DYNAMIC)); | |
5220 | ||
8afb0e02 NC |
5221 | globals = elf32_arm_hash_table (info); |
5222 | ||
5223 | BFD_ASSERT (globals != NULL); | |
5224 | ||
5225 | if (globals->bfd_of_glue_owner != NULL) | |
b34976b6 | 5226 | return TRUE; |
8afb0e02 | 5227 | |
252b5132 RH |
5228 | /* Save the bfd for later use. */ |
5229 | globals->bfd_of_glue_owner = abfd; | |
cedb70c5 | 5230 | |
b34976b6 | 5231 | return TRUE; |
252b5132 RH |
5232 | } |
5233 | ||
906e58ca NC |
5234 | static void |
5235 | check_use_blx (struct elf32_arm_link_hash_table *globals) | |
39b41c9c | 5236 | { |
104d59d1 JM |
5237 | if (bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, |
5238 | Tag_CPU_arch) > 2) | |
39b41c9c PB |
5239 | globals->use_blx = 1; |
5240 | } | |
5241 | ||
b34976b6 | 5242 | bfd_boolean |
57e8b36a | 5243 | bfd_elf32_arm_process_before_allocation (bfd *abfd, |
d504ffc8 | 5244 | struct bfd_link_info *link_info) |
252b5132 RH |
5245 | { |
5246 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 5247 | Elf_Internal_Rela *internal_relocs = NULL; |
252b5132 RH |
5248 | Elf_Internal_Rela *irel, *irelend; |
5249 | bfd_byte *contents = NULL; | |
252b5132 RH |
5250 | |
5251 | asection *sec; | |
5252 | struct elf32_arm_link_hash_table *globals; | |
5253 | ||
5254 | /* If we are only performing a partial link do not bother | |
5255 | to construct any glue. */ | |
1049f94e | 5256 | if (link_info->relocatable) |
b34976b6 | 5257 | return TRUE; |
252b5132 | 5258 | |
39ce1a6a NC |
5259 | /* Here we have a bfd that is to be included on the link. We have a |
5260 | hook to do reloc rummaging, before section sizes are nailed down. */ | |
252b5132 RH |
5261 | globals = elf32_arm_hash_table (link_info); |
5262 | ||
5263 | BFD_ASSERT (globals != NULL); | |
39ce1a6a NC |
5264 | |
5265 | check_use_blx (globals); | |
252b5132 | 5266 | |
d504ffc8 | 5267 | if (globals->byteswap_code && !bfd_big_endian (abfd)) |
e489d0ae | 5268 | { |
d003868e AM |
5269 | _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."), |
5270 | abfd); | |
e489d0ae PB |
5271 | return FALSE; |
5272 | } | |
f21f3fe0 | 5273 | |
39ce1a6a NC |
5274 | /* PR 5398: If we have not decided to include any loadable sections in |
5275 | the output then we will not have a glue owner bfd. This is OK, it | |
5276 | just means that there is nothing else for us to do here. */ | |
5277 | if (globals->bfd_of_glue_owner == NULL) | |
5278 | return TRUE; | |
5279 | ||
252b5132 RH |
5280 | /* Rummage around all the relocs and map the glue vectors. */ |
5281 | sec = abfd->sections; | |
5282 | ||
5283 | if (sec == NULL) | |
b34976b6 | 5284 | return TRUE; |
252b5132 RH |
5285 | |
5286 | for (; sec != NULL; sec = sec->next) | |
5287 | { | |
5288 | if (sec->reloc_count == 0) | |
5289 | continue; | |
5290 | ||
2f475487 AM |
5291 | if ((sec->flags & SEC_EXCLUDE) != 0) |
5292 | continue; | |
5293 | ||
0ffa91dd | 5294 | symtab_hdr = & elf_symtab_hdr (abfd); |
252b5132 | 5295 | |
9b485d32 | 5296 | /* Load the relocs. */ |
6cdc0ccc | 5297 | internal_relocs |
906e58ca | 5298 | = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, FALSE); |
252b5132 | 5299 | |
6cdc0ccc AM |
5300 | if (internal_relocs == NULL) |
5301 | goto error_return; | |
252b5132 | 5302 | |
6cdc0ccc AM |
5303 | irelend = internal_relocs + sec->reloc_count; |
5304 | for (irel = internal_relocs; irel < irelend; irel++) | |
252b5132 RH |
5305 | { |
5306 | long r_type; | |
5307 | unsigned long r_index; | |
252b5132 RH |
5308 | |
5309 | struct elf_link_hash_entry *h; | |
5310 | ||
5311 | r_type = ELF32_R_TYPE (irel->r_info); | |
5312 | r_index = ELF32_R_SYM (irel->r_info); | |
5313 | ||
9b485d32 | 5314 | /* These are the only relocation types we care about. */ |
ba96a88f | 5315 | if ( r_type != R_ARM_PC24 |
845b51d6 | 5316 | && (r_type != R_ARM_V4BX || globals->fix_v4bx < 2)) |
252b5132 RH |
5317 | continue; |
5318 | ||
5319 | /* Get the section contents if we haven't done so already. */ | |
5320 | if (contents == NULL) | |
5321 | { | |
5322 | /* Get cached copy if it exists. */ | |
5323 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
5324 | contents = elf_section_data (sec)->this_hdr.contents; | |
5325 | else | |
5326 | { | |
5327 | /* Go get them off disk. */ | |
57e8b36a | 5328 | if (! bfd_malloc_and_get_section (abfd, sec, &contents)) |
252b5132 RH |
5329 | goto error_return; |
5330 | } | |
5331 | } | |
5332 | ||
845b51d6 PB |
5333 | if (r_type == R_ARM_V4BX) |
5334 | { | |
5335 | int reg; | |
5336 | ||
5337 | reg = bfd_get_32 (abfd, contents + irel->r_offset) & 0xf; | |
5338 | record_arm_bx_glue (link_info, reg); | |
5339 | continue; | |
5340 | } | |
5341 | ||
a7c10850 | 5342 | /* If the relocation is not against a symbol it cannot concern us. */ |
252b5132 RH |
5343 | h = NULL; |
5344 | ||
9b485d32 | 5345 | /* We don't care about local symbols. */ |
252b5132 RH |
5346 | if (r_index < symtab_hdr->sh_info) |
5347 | continue; | |
5348 | ||
9b485d32 | 5349 | /* This is an external symbol. */ |
252b5132 RH |
5350 | r_index -= symtab_hdr->sh_info; |
5351 | h = (struct elf_link_hash_entry *) | |
5352 | elf_sym_hashes (abfd)[r_index]; | |
5353 | ||
5354 | /* If the relocation is against a static symbol it must be within | |
5355 | the current section and so cannot be a cross ARM/Thumb relocation. */ | |
5356 | if (h == NULL) | |
5357 | continue; | |
5358 | ||
d504ffc8 DJ |
5359 | /* If the call will go through a PLT entry then we do not need |
5360 | glue. */ | |
5361 | if (globals->splt != NULL && h->plt.offset != (bfd_vma) -1) | |
b7693d02 DJ |
5362 | continue; |
5363 | ||
252b5132 RH |
5364 | switch (r_type) |
5365 | { | |
5366 | case R_ARM_PC24: | |
5367 | /* This one is a call from arm code. We need to look up | |
2f0ca46a | 5368 | the target of the call. If it is a thumb target, we |
252b5132 | 5369 | insert glue. */ |
ebe24dd4 | 5370 | if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC) |
252b5132 RH |
5371 | record_arm_to_thumb_glue (link_info, h); |
5372 | break; | |
5373 | ||
252b5132 | 5374 | default: |
c6596c5e | 5375 | abort (); |
252b5132 RH |
5376 | } |
5377 | } | |
6cdc0ccc AM |
5378 | |
5379 | if (contents != NULL | |
5380 | && elf_section_data (sec)->this_hdr.contents != contents) | |
5381 | free (contents); | |
5382 | contents = NULL; | |
5383 | ||
5384 | if (internal_relocs != NULL | |
5385 | && elf_section_data (sec)->relocs != internal_relocs) | |
5386 | free (internal_relocs); | |
5387 | internal_relocs = NULL; | |
252b5132 RH |
5388 | } |
5389 | ||
b34976b6 | 5390 | return TRUE; |
9a5aca8c | 5391 | |
252b5132 | 5392 | error_return: |
6cdc0ccc AM |
5393 | if (contents != NULL |
5394 | && elf_section_data (sec)->this_hdr.contents != contents) | |
5395 | free (contents); | |
5396 | if (internal_relocs != NULL | |
5397 | && elf_section_data (sec)->relocs != internal_relocs) | |
5398 | free (internal_relocs); | |
9a5aca8c | 5399 | |
b34976b6 | 5400 | return FALSE; |
252b5132 | 5401 | } |
7e392df6 | 5402 | #endif |
252b5132 | 5403 | |
eb043451 | 5404 | |
c7b8f16e JB |
5405 | /* Initialise maps of ARM/Thumb/data for input BFDs. */ |
5406 | ||
5407 | void | |
5408 | bfd_elf32_arm_init_maps (bfd *abfd) | |
5409 | { | |
5410 | Elf_Internal_Sym *isymbuf; | |
5411 | Elf_Internal_Shdr *hdr; | |
5412 | unsigned int i, localsyms; | |
5413 | ||
af1f4419 NC |
5414 | /* PR 7093: Make sure that we are dealing with an arm elf binary. */ |
5415 | if (! is_arm_elf (abfd)) | |
5416 | return; | |
5417 | ||
c7b8f16e JB |
5418 | if ((abfd->flags & DYNAMIC) != 0) |
5419 | return; | |
5420 | ||
0ffa91dd | 5421 | hdr = & elf_symtab_hdr (abfd); |
c7b8f16e JB |
5422 | localsyms = hdr->sh_info; |
5423 | ||
5424 | /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field | |
5425 | should contain the number of local symbols, which should come before any | |
5426 | global symbols. Mapping symbols are always local. */ | |
5427 | isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, | |
5428 | NULL); | |
5429 | ||
5430 | /* No internal symbols read? Skip this BFD. */ | |
5431 | if (isymbuf == NULL) | |
5432 | return; | |
5433 | ||
5434 | for (i = 0; i < localsyms; i++) | |
5435 | { | |
5436 | Elf_Internal_Sym *isym = &isymbuf[i]; | |
5437 | asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5438 | const char *name; | |
906e58ca | 5439 | |
c7b8f16e JB |
5440 | if (sec != NULL |
5441 | && ELF_ST_BIND (isym->st_info) == STB_LOCAL) | |
5442 | { | |
5443 | name = bfd_elf_string_from_elf_section (abfd, | |
5444 | hdr->sh_link, isym->st_name); | |
906e58ca | 5445 | |
c7b8f16e JB |
5446 | if (bfd_is_arm_special_symbol_name (name, |
5447 | BFD_ARM_SPECIAL_SYM_TYPE_MAP)) | |
5448 | elf32_arm_section_map_add (sec, name[1], isym->st_value); | |
5449 | } | |
5450 | } | |
5451 | } | |
5452 | ||
5453 | ||
48229727 JB |
5454 | /* Auto-select enabling of Cortex-A8 erratum fix if the user didn't explicitly |
5455 | say what they wanted. */ | |
5456 | ||
5457 | void | |
5458 | bfd_elf32_arm_set_cortex_a8_fix (bfd *obfd, struct bfd_link_info *link_info) | |
5459 | { | |
5460 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); | |
5461 | obj_attribute *out_attr = elf_known_obj_attributes_proc (obfd); | |
5462 | ||
5463 | if (globals->fix_cortex_a8 == -1) | |
5464 | { | |
5465 | /* Turn on Cortex-A8 erratum workaround for ARMv7-A. */ | |
5466 | if (out_attr[Tag_CPU_arch].i == TAG_CPU_ARCH_V7 | |
5467 | && (out_attr[Tag_CPU_arch_profile].i == 'A' | |
5468 | || out_attr[Tag_CPU_arch_profile].i == 0)) | |
5469 | globals->fix_cortex_a8 = 1; | |
5470 | else | |
5471 | globals->fix_cortex_a8 = 0; | |
5472 | } | |
5473 | } | |
5474 | ||
5475 | ||
c7b8f16e JB |
5476 | void |
5477 | bfd_elf32_arm_set_vfp11_fix (bfd *obfd, struct bfd_link_info *link_info) | |
5478 | { | |
5479 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); | |
104d59d1 | 5480 | obj_attribute *out_attr = elf_known_obj_attributes_proc (obfd); |
906e58ca | 5481 | |
c7b8f16e JB |
5482 | /* We assume that ARMv7+ does not need the VFP11 denorm erratum fix. */ |
5483 | if (out_attr[Tag_CPU_arch].i >= TAG_CPU_ARCH_V7) | |
5484 | { | |
5485 | switch (globals->vfp11_fix) | |
5486 | { | |
5487 | case BFD_ARM_VFP11_FIX_DEFAULT: | |
5488 | case BFD_ARM_VFP11_FIX_NONE: | |
5489 | globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE; | |
5490 | break; | |
906e58ca | 5491 | |
c7b8f16e JB |
5492 | default: |
5493 | /* Give a warning, but do as the user requests anyway. */ | |
5494 | (*_bfd_error_handler) (_("%B: warning: selected VFP11 erratum " | |
5495 | "workaround is not necessary for target architecture"), obfd); | |
5496 | } | |
5497 | } | |
5498 | else if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_DEFAULT) | |
5499 | /* For earlier architectures, we might need the workaround, but do not | |
5500 | enable it by default. If users is running with broken hardware, they | |
5501 | must enable the erratum fix explicitly. */ | |
5502 | globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE; | |
5503 | } | |
5504 | ||
5505 | ||
906e58ca NC |
5506 | enum bfd_arm_vfp11_pipe |
5507 | { | |
c7b8f16e JB |
5508 | VFP11_FMAC, |
5509 | VFP11_LS, | |
5510 | VFP11_DS, | |
5511 | VFP11_BAD | |
5512 | }; | |
5513 | ||
5514 | /* Return a VFP register number. This is encoded as RX:X for single-precision | |
5515 | registers, or X:RX for double-precision registers, where RX is the group of | |
5516 | four bits in the instruction encoding and X is the single extension bit. | |
5517 | RX and X fields are specified using their lowest (starting) bit. The return | |
5518 | value is: | |
5519 | ||
5520 | 0...31: single-precision registers s0...s31 | |
5521 | 32...63: double-precision registers d0...d31. | |
906e58ca | 5522 | |
c7b8f16e JB |
5523 | Although X should be zero for VFP11 (encoding d0...d15 only), we might |
5524 | encounter VFP3 instructions, so we allow the full range for DP registers. */ | |
906e58ca | 5525 | |
c7b8f16e JB |
5526 | static unsigned int |
5527 | bfd_arm_vfp11_regno (unsigned int insn, bfd_boolean is_double, unsigned int rx, | |
5528 | unsigned int x) | |
5529 | { | |
5530 | if (is_double) | |
5531 | return (((insn >> rx) & 0xf) | (((insn >> x) & 1) << 4)) + 32; | |
5532 | else | |
5533 | return (((insn >> rx) & 0xf) << 1) | ((insn >> x) & 1); | |
5534 | } | |
5535 | ||
5536 | /* Set bits in *WMASK according to a register number REG as encoded by | |
5537 | bfd_arm_vfp11_regno(). Ignore d16-d31. */ | |
5538 | ||
5539 | static void | |
5540 | bfd_arm_vfp11_write_mask (unsigned int *wmask, unsigned int reg) | |
5541 | { | |
5542 | if (reg < 32) | |
5543 | *wmask |= 1 << reg; | |
5544 | else if (reg < 48) | |
5545 | *wmask |= 3 << ((reg - 32) * 2); | |
5546 | } | |
5547 | ||
5548 | /* Return TRUE if WMASK overwrites anything in REGS. */ | |
5549 | ||
5550 | static bfd_boolean | |
5551 | bfd_arm_vfp11_antidependency (unsigned int wmask, int *regs, int numregs) | |
5552 | { | |
5553 | int i; | |
906e58ca | 5554 | |
c7b8f16e JB |
5555 | for (i = 0; i < numregs; i++) |
5556 | { | |
5557 | unsigned int reg = regs[i]; | |
5558 | ||
5559 | if (reg < 32 && (wmask & (1 << reg)) != 0) | |
5560 | return TRUE; | |
906e58ca | 5561 | |
c7b8f16e JB |
5562 | reg -= 32; |
5563 | ||
5564 | if (reg >= 16) | |
5565 | continue; | |
906e58ca | 5566 | |
c7b8f16e JB |
5567 | if ((wmask & (3 << (reg * 2))) != 0) |
5568 | return TRUE; | |
5569 | } | |
906e58ca | 5570 | |
c7b8f16e JB |
5571 | return FALSE; |
5572 | } | |
5573 | ||
5574 | /* In this function, we're interested in two things: finding input registers | |
5575 | for VFP data-processing instructions, and finding the set of registers which | |
5576 | arbitrary VFP instructions may write to. We use a 32-bit unsigned int to | |
5577 | hold the written set, so FLDM etc. are easy to deal with (we're only | |
5578 | interested in 32 SP registers or 16 dp registers, due to the VFP version | |
5579 | implemented by the chip in question). DP registers are marked by setting | |
5580 | both SP registers in the write mask). */ | |
5581 | ||
5582 | static enum bfd_arm_vfp11_pipe | |
5583 | bfd_arm_vfp11_insn_decode (unsigned int insn, unsigned int *destmask, int *regs, | |
5584 | int *numregs) | |
5585 | { | |
5586 | enum bfd_arm_vfp11_pipe pipe = VFP11_BAD; | |
5587 | bfd_boolean is_double = ((insn & 0xf00) == 0xb00) ? 1 : 0; | |
5588 | ||
5589 | if ((insn & 0x0f000e10) == 0x0e000a00) /* A data-processing insn. */ | |
5590 | { | |
5591 | unsigned int pqrs; | |
5592 | unsigned int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22); | |
5593 | unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5); | |
5594 | ||
5595 | pqrs = ((insn & 0x00800000) >> 20) | |
5596 | | ((insn & 0x00300000) >> 19) | |
5597 | | ((insn & 0x00000040) >> 6); | |
5598 | ||
5599 | switch (pqrs) | |
5600 | { | |
5601 | case 0: /* fmac[sd]. */ | |
5602 | case 1: /* fnmac[sd]. */ | |
5603 | case 2: /* fmsc[sd]. */ | |
5604 | case 3: /* fnmsc[sd]. */ | |
5605 | pipe = VFP11_FMAC; | |
5606 | bfd_arm_vfp11_write_mask (destmask, fd); | |
5607 | regs[0] = fd; | |
5608 | regs[1] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */ | |
5609 | regs[2] = fm; | |
5610 | *numregs = 3; | |
5611 | break; | |
5612 | ||
5613 | case 4: /* fmul[sd]. */ | |
5614 | case 5: /* fnmul[sd]. */ | |
5615 | case 6: /* fadd[sd]. */ | |
5616 | case 7: /* fsub[sd]. */ | |
5617 | pipe = VFP11_FMAC; | |
5618 | goto vfp_binop; | |
5619 | ||
5620 | case 8: /* fdiv[sd]. */ | |
5621 | pipe = VFP11_DS; | |
5622 | vfp_binop: | |
5623 | bfd_arm_vfp11_write_mask (destmask, fd); | |
5624 | regs[0] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */ | |
5625 | regs[1] = fm; | |
5626 | *numregs = 2; | |
5627 | break; | |
5628 | ||
5629 | case 15: /* extended opcode. */ | |
5630 | { | |
5631 | unsigned int extn = ((insn >> 15) & 0x1e) | |
5632 | | ((insn >> 7) & 1); | |
5633 | ||
5634 | switch (extn) | |
5635 | { | |
5636 | case 0: /* fcpy[sd]. */ | |
5637 | case 1: /* fabs[sd]. */ | |
5638 | case 2: /* fneg[sd]. */ | |
5639 | case 8: /* fcmp[sd]. */ | |
5640 | case 9: /* fcmpe[sd]. */ | |
5641 | case 10: /* fcmpz[sd]. */ | |
5642 | case 11: /* fcmpez[sd]. */ | |
5643 | case 16: /* fuito[sd]. */ | |
5644 | case 17: /* fsito[sd]. */ | |
5645 | case 24: /* ftoui[sd]. */ | |
5646 | case 25: /* ftouiz[sd]. */ | |
5647 | case 26: /* ftosi[sd]. */ | |
5648 | case 27: /* ftosiz[sd]. */ | |
5649 | /* These instructions will not bounce due to underflow. */ | |
5650 | *numregs = 0; | |
5651 | pipe = VFP11_FMAC; | |
5652 | break; | |
5653 | ||
5654 | case 3: /* fsqrt[sd]. */ | |
5655 | /* fsqrt cannot underflow, but it can (perhaps) overwrite | |
5656 | registers to cause the erratum in previous instructions. */ | |
5657 | bfd_arm_vfp11_write_mask (destmask, fd); | |
5658 | pipe = VFP11_DS; | |
5659 | break; | |
5660 | ||
5661 | case 15: /* fcvt{ds,sd}. */ | |
5662 | { | |
5663 | int rnum = 0; | |
5664 | ||
5665 | bfd_arm_vfp11_write_mask (destmask, fd); | |
5666 | ||
5667 | /* Only FCVTSD can underflow. */ | |
5668 | if ((insn & 0x100) != 0) | |
5669 | regs[rnum++] = fm; | |
5670 | ||
5671 | *numregs = rnum; | |
5672 | ||
5673 | pipe = VFP11_FMAC; | |
5674 | } | |
5675 | break; | |
5676 | ||
5677 | default: | |
5678 | return VFP11_BAD; | |
5679 | } | |
5680 | } | |
5681 | break; | |
5682 | ||
5683 | default: | |
5684 | return VFP11_BAD; | |
5685 | } | |
5686 | } | |
5687 | /* Two-register transfer. */ | |
5688 | else if ((insn & 0x0fe00ed0) == 0x0c400a10) | |
5689 | { | |
5690 | unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5); | |
906e58ca | 5691 | |
c7b8f16e JB |
5692 | if ((insn & 0x100000) == 0) |
5693 | { | |
5694 | if (is_double) | |
5695 | bfd_arm_vfp11_write_mask (destmask, fm); | |
5696 | else | |
5697 | { | |
5698 | bfd_arm_vfp11_write_mask (destmask, fm); | |
5699 | bfd_arm_vfp11_write_mask (destmask, fm + 1); | |
5700 | } | |
5701 | } | |
5702 | ||
5703 | pipe = VFP11_LS; | |
5704 | } | |
5705 | else if ((insn & 0x0e100e00) == 0x0c100a00) /* A load insn. */ | |
5706 | { | |
5707 | int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22); | |
5708 | unsigned int puw = ((insn >> 21) & 0x1) | (((insn >> 23) & 3) << 1); | |
906e58ca | 5709 | |
c7b8f16e JB |
5710 | switch (puw) |
5711 | { | |
5712 | case 0: /* Two-reg transfer. We should catch these above. */ | |
5713 | abort (); | |
906e58ca | 5714 | |
c7b8f16e JB |
5715 | case 2: /* fldm[sdx]. */ |
5716 | case 3: | |
5717 | case 5: | |
5718 | { | |
5719 | unsigned int i, offset = insn & 0xff; | |
5720 | ||
5721 | if (is_double) | |
5722 | offset >>= 1; | |
5723 | ||
5724 | for (i = fd; i < fd + offset; i++) | |
5725 | bfd_arm_vfp11_write_mask (destmask, i); | |
5726 | } | |
5727 | break; | |
906e58ca | 5728 | |
c7b8f16e JB |
5729 | case 4: /* fld[sd]. */ |
5730 | case 6: | |
5731 | bfd_arm_vfp11_write_mask (destmask, fd); | |
5732 | break; | |
906e58ca | 5733 | |
c7b8f16e JB |
5734 | default: |
5735 | return VFP11_BAD; | |
5736 | } | |
5737 | ||
5738 | pipe = VFP11_LS; | |
5739 | } | |
5740 | /* Single-register transfer. Note L==0. */ | |
5741 | else if ((insn & 0x0f100e10) == 0x0e000a10) | |
5742 | { | |
5743 | unsigned int opcode = (insn >> 21) & 7; | |
5744 | unsigned int fn = bfd_arm_vfp11_regno (insn, is_double, 16, 7); | |
5745 | ||
5746 | switch (opcode) | |
5747 | { | |
5748 | case 0: /* fmsr/fmdlr. */ | |
5749 | case 1: /* fmdhr. */ | |
5750 | /* Mark fmdhr and fmdlr as writing to the whole of the DP | |
5751 | destination register. I don't know if this is exactly right, | |
5752 | but it is the conservative choice. */ | |
5753 | bfd_arm_vfp11_write_mask (destmask, fn); | |
5754 | break; | |
5755 | ||
5756 | case 7: /* fmxr. */ | |
5757 | break; | |
5758 | } | |
5759 | ||
5760 | pipe = VFP11_LS; | |
5761 | } | |
5762 | ||
5763 | return pipe; | |
5764 | } | |
5765 | ||
5766 | ||
5767 | static int elf32_arm_compare_mapping (const void * a, const void * b); | |
5768 | ||
5769 | ||
5770 | /* Look for potentially-troublesome code sequences which might trigger the | |
5771 | VFP11 denormal/antidependency erratum. See, e.g., the ARM1136 errata sheet | |
5772 | (available from ARM) for details of the erratum. A short version is | |
5773 | described in ld.texinfo. */ | |
5774 | ||
5775 | bfd_boolean | |
5776 | bfd_elf32_arm_vfp11_erratum_scan (bfd *abfd, struct bfd_link_info *link_info) | |
5777 | { | |
5778 | asection *sec; | |
5779 | bfd_byte *contents = NULL; | |
5780 | int state = 0; | |
5781 | int regs[3], numregs = 0; | |
5782 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); | |
5783 | int use_vector = (globals->vfp11_fix == BFD_ARM_VFP11_FIX_VECTOR); | |
906e58ca | 5784 | |
c7b8f16e JB |
5785 | /* We use a simple FSM to match troublesome VFP11 instruction sequences. |
5786 | The states transition as follows: | |
906e58ca | 5787 | |
c7b8f16e JB |
5788 | 0 -> 1 (vector) or 0 -> 2 (scalar) |
5789 | A VFP FMAC-pipeline instruction has been seen. Fill | |
5790 | regs[0]..regs[numregs-1] with its input operands. Remember this | |
5791 | instruction in 'first_fmac'. | |
5792 | ||
5793 | 1 -> 2 | |
5794 | Any instruction, except for a VFP instruction which overwrites | |
5795 | regs[*]. | |
906e58ca | 5796 | |
c7b8f16e JB |
5797 | 1 -> 3 [ -> 0 ] or |
5798 | 2 -> 3 [ -> 0 ] | |
5799 | A VFP instruction has been seen which overwrites any of regs[*]. | |
5800 | We must make a veneer! Reset state to 0 before examining next | |
5801 | instruction. | |
906e58ca | 5802 | |
c7b8f16e JB |
5803 | 2 -> 0 |
5804 | If we fail to match anything in state 2, reset to state 0 and reset | |
5805 | the instruction pointer to the instruction after 'first_fmac'. | |
5806 | ||
5807 | If the VFP11 vector mode is in use, there must be at least two unrelated | |
5808 | instructions between anti-dependent VFP11 instructions to properly avoid | |
906e58ca | 5809 | triggering the erratum, hence the use of the extra state 1. */ |
c7b8f16e JB |
5810 | |
5811 | /* If we are only performing a partial link do not bother | |
5812 | to construct any glue. */ | |
5813 | if (link_info->relocatable) | |
5814 | return TRUE; | |
5815 | ||
0ffa91dd NC |
5816 | /* Skip if this bfd does not correspond to an ELF image. */ |
5817 | if (! is_arm_elf (abfd)) | |
5818 | return TRUE; | |
906e58ca | 5819 | |
c7b8f16e JB |
5820 | /* We should have chosen a fix type by the time we get here. */ |
5821 | BFD_ASSERT (globals->vfp11_fix != BFD_ARM_VFP11_FIX_DEFAULT); | |
5822 | ||
5823 | if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_NONE) | |
5824 | return TRUE; | |
2e6030b9 | 5825 | |
33a7ffc2 JM |
5826 | /* Skip this BFD if it corresponds to an executable or dynamic object. */ |
5827 | if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0) | |
5828 | return TRUE; | |
5829 | ||
c7b8f16e JB |
5830 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
5831 | { | |
5832 | unsigned int i, span, first_fmac = 0, veneer_of_insn = 0; | |
5833 | struct _arm_elf_section_data *sec_data; | |
5834 | ||
5835 | /* If we don't have executable progbits, we're not interested in this | |
5836 | section. Also skip if section is to be excluded. */ | |
5837 | if (elf_section_type (sec) != SHT_PROGBITS | |
5838 | || (elf_section_flags (sec) & SHF_EXECINSTR) == 0 | |
5839 | || (sec->flags & SEC_EXCLUDE) != 0 | |
33a7ffc2 JM |
5840 | || sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS |
5841 | || sec->output_section == bfd_abs_section_ptr | |
c7b8f16e JB |
5842 | || strcmp (sec->name, VFP11_ERRATUM_VENEER_SECTION_NAME) == 0) |
5843 | continue; | |
5844 | ||
5845 | sec_data = elf32_arm_section_data (sec); | |
906e58ca | 5846 | |
c7b8f16e JB |
5847 | if (sec_data->mapcount == 0) |
5848 | continue; | |
906e58ca | 5849 | |
c7b8f16e JB |
5850 | if (elf_section_data (sec)->this_hdr.contents != NULL) |
5851 | contents = elf_section_data (sec)->this_hdr.contents; | |
5852 | else if (! bfd_malloc_and_get_section (abfd, sec, &contents)) | |
5853 | goto error_return; | |
5854 | ||
5855 | qsort (sec_data->map, sec_data->mapcount, sizeof (elf32_arm_section_map), | |
5856 | elf32_arm_compare_mapping); | |
5857 | ||
5858 | for (span = 0; span < sec_data->mapcount; span++) | |
5859 | { | |
5860 | unsigned int span_start = sec_data->map[span].vma; | |
5861 | unsigned int span_end = (span == sec_data->mapcount - 1) | |
5862 | ? sec->size : sec_data->map[span + 1].vma; | |
5863 | char span_type = sec_data->map[span].type; | |
906e58ca | 5864 | |
c7b8f16e JB |
5865 | /* FIXME: Only ARM mode is supported at present. We may need to |
5866 | support Thumb-2 mode also at some point. */ | |
5867 | if (span_type != 'a') | |
5868 | continue; | |
5869 | ||
5870 | for (i = span_start; i < span_end;) | |
5871 | { | |
5872 | unsigned int next_i = i + 4; | |
5873 | unsigned int insn = bfd_big_endian (abfd) | |
5874 | ? (contents[i] << 24) | |
5875 | | (contents[i + 1] << 16) | |
5876 | | (contents[i + 2] << 8) | |
5877 | | contents[i + 3] | |
5878 | : (contents[i + 3] << 24) | |
5879 | | (contents[i + 2] << 16) | |
5880 | | (contents[i + 1] << 8) | |
5881 | | contents[i]; | |
5882 | unsigned int writemask = 0; | |
5883 | enum bfd_arm_vfp11_pipe pipe; | |
5884 | ||
5885 | switch (state) | |
5886 | { | |
5887 | case 0: | |
5888 | pipe = bfd_arm_vfp11_insn_decode (insn, &writemask, regs, | |
5889 | &numregs); | |
5890 | /* I'm assuming the VFP11 erratum can trigger with denorm | |
5891 | operands on either the FMAC or the DS pipeline. This might | |
5892 | lead to slightly overenthusiastic veneer insertion. */ | |
5893 | if (pipe == VFP11_FMAC || pipe == VFP11_DS) | |
5894 | { | |
5895 | state = use_vector ? 1 : 2; | |
5896 | first_fmac = i; | |
5897 | veneer_of_insn = insn; | |
5898 | } | |
5899 | break; | |
5900 | ||
5901 | case 1: | |
5902 | { | |
5903 | int other_regs[3], other_numregs; | |
5904 | pipe = bfd_arm_vfp11_insn_decode (insn, &writemask, | |
5905 | other_regs, | |
5906 | &other_numregs); | |
5907 | if (pipe != VFP11_BAD | |
5908 | && bfd_arm_vfp11_antidependency (writemask, regs, | |
5909 | numregs)) | |
5910 | state = 3; | |
5911 | else | |
5912 | state = 2; | |
5913 | } | |
5914 | break; | |
5915 | ||
5916 | case 2: | |
5917 | { | |
5918 | int other_regs[3], other_numregs; | |
5919 | pipe = bfd_arm_vfp11_insn_decode (insn, &writemask, | |
5920 | other_regs, | |
5921 | &other_numregs); | |
5922 | if (pipe != VFP11_BAD | |
5923 | && bfd_arm_vfp11_antidependency (writemask, regs, | |
5924 | numregs)) | |
5925 | state = 3; | |
5926 | else | |
5927 | { | |
5928 | state = 0; | |
5929 | next_i = first_fmac + 4; | |
5930 | } | |
5931 | } | |
5932 | break; | |
5933 | ||
5934 | case 3: | |
5935 | abort (); /* Should be unreachable. */ | |
5936 | } | |
5937 | ||
5938 | if (state == 3) | |
5939 | { | |
5940 | elf32_vfp11_erratum_list *newerr | |
5941 | = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list)); | |
5942 | int errcount; | |
5943 | ||
5944 | errcount = ++(elf32_arm_section_data (sec)->erratumcount); | |
5945 | ||
5946 | newerr->u.b.vfp_insn = veneer_of_insn; | |
5947 | ||
5948 | switch (span_type) | |
5949 | { | |
5950 | case 'a': | |
5951 | newerr->type = VFP11_ERRATUM_BRANCH_TO_ARM_VENEER; | |
5952 | break; | |
906e58ca | 5953 | |
c7b8f16e JB |
5954 | default: |
5955 | abort (); | |
5956 | } | |
5957 | ||
5958 | record_vfp11_erratum_veneer (link_info, newerr, abfd, sec, | |
5959 | first_fmac); | |
5960 | ||
5961 | newerr->vma = -1; | |
5962 | ||
5963 | newerr->next = sec_data->erratumlist; | |
5964 | sec_data->erratumlist = newerr; | |
5965 | ||
5966 | state = 0; | |
5967 | } | |
5968 | ||
5969 | i = next_i; | |
5970 | } | |
5971 | } | |
906e58ca | 5972 | |
c7b8f16e JB |
5973 | if (contents != NULL |
5974 | && elf_section_data (sec)->this_hdr.contents != contents) | |
5975 | free (contents); | |
5976 | contents = NULL; | |
5977 | } | |
5978 | ||
5979 | return TRUE; | |
5980 | ||
5981 | error_return: | |
5982 | if (contents != NULL | |
5983 | && elf_section_data (sec)->this_hdr.contents != contents) | |
5984 | free (contents); | |
906e58ca | 5985 | |
c7b8f16e JB |
5986 | return FALSE; |
5987 | } | |
5988 | ||
5989 | /* Find virtual-memory addresses for VFP11 erratum veneers and return locations | |
5990 | after sections have been laid out, using specially-named symbols. */ | |
5991 | ||
5992 | void | |
5993 | bfd_elf32_arm_vfp11_fix_veneer_locations (bfd *abfd, | |
5994 | struct bfd_link_info *link_info) | |
5995 | { | |
5996 | asection *sec; | |
5997 | struct elf32_arm_link_hash_table *globals; | |
5998 | char *tmp_name; | |
906e58ca | 5999 | |
c7b8f16e JB |
6000 | if (link_info->relocatable) |
6001 | return; | |
2e6030b9 MS |
6002 | |
6003 | /* Skip if this bfd does not correspond to an ELF image. */ | |
0ffa91dd | 6004 | if (! is_arm_elf (abfd)) |
2e6030b9 MS |
6005 | return; |
6006 | ||
c7b8f16e | 6007 | globals = elf32_arm_hash_table (link_info); |
906e58ca | 6008 | |
c7b8f16e JB |
6009 | tmp_name = bfd_malloc ((bfd_size_type) strlen |
6010 | (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10); | |
6011 | ||
6012 | for (sec = abfd->sections; sec != NULL; sec = sec->next) | |
6013 | { | |
6014 | struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec); | |
6015 | elf32_vfp11_erratum_list *errnode = sec_data->erratumlist; | |
906e58ca | 6016 | |
c7b8f16e JB |
6017 | for (; errnode != NULL; errnode = errnode->next) |
6018 | { | |
6019 | struct elf_link_hash_entry *myh; | |
6020 | bfd_vma vma; | |
6021 | ||
6022 | switch (errnode->type) | |
6023 | { | |
6024 | case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER: | |
6025 | case VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER: | |
6026 | /* Find veneer symbol. */ | |
6027 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME, | |
6028 | errnode->u.b.veneer->u.v.id); | |
6029 | ||
6030 | myh = elf_link_hash_lookup | |
6031 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); | |
6032 | ||
6033 | if (myh == NULL) | |
6034 | (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer " | |
6035 | "`%s'"), abfd, tmp_name); | |
6036 | ||
6037 | vma = myh->root.u.def.section->output_section->vma | |
6038 | + myh->root.u.def.section->output_offset | |
6039 | + myh->root.u.def.value; | |
6040 | ||
6041 | errnode->u.b.veneer->vma = vma; | |
6042 | break; | |
6043 | ||
6044 | case VFP11_ERRATUM_ARM_VENEER: | |
6045 | case VFP11_ERRATUM_THUMB_VENEER: | |
6046 | /* Find return location. */ | |
6047 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r", | |
6048 | errnode->u.v.id); | |
6049 | ||
6050 | myh = elf_link_hash_lookup | |
6051 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); | |
6052 | ||
6053 | if (myh == NULL) | |
6054 | (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer " | |
6055 | "`%s'"), abfd, tmp_name); | |
6056 | ||
6057 | vma = myh->root.u.def.section->output_section->vma | |
6058 | + myh->root.u.def.section->output_offset | |
6059 | + myh->root.u.def.value; | |
6060 | ||
6061 | errnode->u.v.branch->vma = vma; | |
6062 | break; | |
906e58ca | 6063 | |
c7b8f16e JB |
6064 | default: |
6065 | abort (); | |
6066 | } | |
6067 | } | |
6068 | } | |
906e58ca | 6069 | |
c7b8f16e JB |
6070 | free (tmp_name); |
6071 | } | |
6072 | ||
6073 | ||
eb043451 PB |
6074 | /* Set target relocation values needed during linking. */ |
6075 | ||
6076 | void | |
bf21ed78 MS |
6077 | bfd_elf32_arm_set_target_relocs (struct bfd *output_bfd, |
6078 | struct bfd_link_info *link_info, | |
eb043451 | 6079 | int target1_is_rel, |
319850b4 | 6080 | char * target2_type, |
33bfe774 | 6081 | int fix_v4bx, |
c7b8f16e | 6082 | int use_blx, |
bf21ed78 | 6083 | bfd_arm_vfp11_fix vfp11_fix, |
a9dc9481 | 6084 | int no_enum_warn, int no_wchar_warn, |
48229727 | 6085 | int pic_veneer, int fix_cortex_a8) |
eb043451 PB |
6086 | { |
6087 | struct elf32_arm_link_hash_table *globals; | |
6088 | ||
6089 | globals = elf32_arm_hash_table (link_info); | |
6090 | ||
6091 | globals->target1_is_rel = target1_is_rel; | |
6092 | if (strcmp (target2_type, "rel") == 0) | |
6093 | globals->target2_reloc = R_ARM_REL32; | |
eeac373a PB |
6094 | else if (strcmp (target2_type, "abs") == 0) |
6095 | globals->target2_reloc = R_ARM_ABS32; | |
eb043451 PB |
6096 | else if (strcmp (target2_type, "got-rel") == 0) |
6097 | globals->target2_reloc = R_ARM_GOT_PREL; | |
6098 | else | |
6099 | { | |
6100 | _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."), | |
6101 | target2_type); | |
6102 | } | |
319850b4 | 6103 | globals->fix_v4bx = fix_v4bx; |
33bfe774 | 6104 | globals->use_blx |= use_blx; |
c7b8f16e | 6105 | globals->vfp11_fix = vfp11_fix; |
27e55c4d | 6106 | globals->pic_veneer = pic_veneer; |
48229727 | 6107 | globals->fix_cortex_a8 = fix_cortex_a8; |
bf21ed78 | 6108 | |
0ffa91dd NC |
6109 | BFD_ASSERT (is_arm_elf (output_bfd)); |
6110 | elf_arm_tdata (output_bfd)->no_enum_size_warning = no_enum_warn; | |
a9dc9481 | 6111 | elf_arm_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn; |
eb043451 | 6112 | } |
eb043451 | 6113 | |
12a0a0fd | 6114 | /* Replace the target offset of a Thumb bl or b.w instruction. */ |
252b5132 | 6115 | |
12a0a0fd PB |
6116 | static void |
6117 | insert_thumb_branch (bfd *abfd, long int offset, bfd_byte *insn) | |
6118 | { | |
6119 | bfd_vma upper; | |
6120 | bfd_vma lower; | |
6121 | int reloc_sign; | |
6122 | ||
6123 | BFD_ASSERT ((offset & 1) == 0); | |
6124 | ||
6125 | upper = bfd_get_16 (abfd, insn); | |
6126 | lower = bfd_get_16 (abfd, insn + 2); | |
6127 | reloc_sign = (offset < 0) ? 1 : 0; | |
6128 | upper = (upper & ~(bfd_vma) 0x7ff) | |
6129 | | ((offset >> 12) & 0x3ff) | |
6130 | | (reloc_sign << 10); | |
906e58ca | 6131 | lower = (lower & ~(bfd_vma) 0x2fff) |
12a0a0fd PB |
6132 | | (((!((offset >> 23) & 1)) ^ reloc_sign) << 13) |
6133 | | (((!((offset >> 22) & 1)) ^ reloc_sign) << 11) | |
6134 | | ((offset >> 1) & 0x7ff); | |
6135 | bfd_put_16 (abfd, upper, insn); | |
6136 | bfd_put_16 (abfd, lower, insn + 2); | |
252b5132 RH |
6137 | } |
6138 | ||
9b485d32 NC |
6139 | /* Thumb code calling an ARM function. */ |
6140 | ||
252b5132 | 6141 | static int |
57e8b36a NC |
6142 | elf32_thumb_to_arm_stub (struct bfd_link_info * info, |
6143 | const char * name, | |
6144 | bfd * input_bfd, | |
6145 | bfd * output_bfd, | |
6146 | asection * input_section, | |
6147 | bfd_byte * hit_data, | |
6148 | asection * sym_sec, | |
6149 | bfd_vma offset, | |
6150 | bfd_signed_vma addend, | |
f2a9dd69 DJ |
6151 | bfd_vma val, |
6152 | char **error_message) | |
252b5132 | 6153 | { |
bcbdc74c | 6154 | asection * s = 0; |
dc810e39 | 6155 | bfd_vma my_offset; |
252b5132 | 6156 | long int ret_offset; |
bcbdc74c NC |
6157 | struct elf_link_hash_entry * myh; |
6158 | struct elf32_arm_link_hash_table * globals; | |
252b5132 | 6159 | |
f2a9dd69 | 6160 | myh = find_thumb_glue (info, name, error_message); |
252b5132 | 6161 | if (myh == NULL) |
b34976b6 | 6162 | return FALSE; |
252b5132 RH |
6163 | |
6164 | globals = elf32_arm_hash_table (info); | |
6165 | ||
6166 | BFD_ASSERT (globals != NULL); | |
6167 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
6168 | ||
6169 | my_offset = myh->root.u.def.value; | |
6170 | ||
6171 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
6172 | THUMB2ARM_GLUE_SECTION_NAME); | |
6173 | ||
6174 | BFD_ASSERT (s != NULL); | |
6175 | BFD_ASSERT (s->contents != NULL); | |
6176 | BFD_ASSERT (s->output_section != NULL); | |
6177 | ||
6178 | if ((my_offset & 0x01) == 0x01) | |
6179 | { | |
6180 | if (sym_sec != NULL | |
6181 | && sym_sec->owner != NULL | |
6182 | && !INTERWORK_FLAG (sym_sec->owner)) | |
6183 | { | |
8f615d07 | 6184 | (*_bfd_error_handler) |
d003868e AM |
6185 | (_("%B(%s): warning: interworking not enabled.\n" |
6186 | " first occurrence: %B: thumb call to arm"), | |
6187 | sym_sec->owner, input_bfd, name); | |
252b5132 | 6188 | |
b34976b6 | 6189 | return FALSE; |
252b5132 RH |
6190 | } |
6191 | ||
6192 | --my_offset; | |
6193 | myh->root.u.def.value = my_offset; | |
6194 | ||
52ab56c2 PB |
6195 | put_thumb_insn (globals, output_bfd, (bfd_vma) t2a1_bx_pc_insn, |
6196 | s->contents + my_offset); | |
252b5132 | 6197 | |
52ab56c2 PB |
6198 | put_thumb_insn (globals, output_bfd, (bfd_vma) t2a2_noop_insn, |
6199 | s->contents + my_offset + 2); | |
252b5132 RH |
6200 | |
6201 | ret_offset = | |
9b485d32 NC |
6202 | /* Address of destination of the stub. */ |
6203 | ((bfd_signed_vma) val) | |
252b5132 | 6204 | - ((bfd_signed_vma) |
57e8b36a NC |
6205 | /* Offset from the start of the current section |
6206 | to the start of the stubs. */ | |
9b485d32 NC |
6207 | (s->output_offset |
6208 | /* Offset of the start of this stub from the start of the stubs. */ | |
6209 | + my_offset | |
6210 | /* Address of the start of the current section. */ | |
6211 | + s->output_section->vma) | |
6212 | /* The branch instruction is 4 bytes into the stub. */ | |
6213 | + 4 | |
6214 | /* ARM branches work from the pc of the instruction + 8. */ | |
6215 | + 8); | |
252b5132 | 6216 | |
52ab56c2 PB |
6217 | put_arm_insn (globals, output_bfd, |
6218 | (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF), | |
6219 | s->contents + my_offset + 4); | |
252b5132 RH |
6220 | } |
6221 | ||
6222 | BFD_ASSERT (my_offset <= globals->thumb_glue_size); | |
6223 | ||
427bfd90 NC |
6224 | /* Now go back and fix up the original BL insn to point to here. */ |
6225 | ret_offset = | |
6226 | /* Address of where the stub is located. */ | |
6227 | (s->output_section->vma + s->output_offset + my_offset) | |
6228 | /* Address of where the BL is located. */ | |
57e8b36a NC |
6229 | - (input_section->output_section->vma + input_section->output_offset |
6230 | + offset) | |
427bfd90 NC |
6231 | /* Addend in the relocation. */ |
6232 | - addend | |
6233 | /* Biassing for PC-relative addressing. */ | |
6234 | - 8; | |
252b5132 | 6235 | |
12a0a0fd | 6236 | insert_thumb_branch (input_bfd, ret_offset, hit_data - input_section->vma); |
252b5132 | 6237 | |
b34976b6 | 6238 | return TRUE; |
252b5132 RH |
6239 | } |
6240 | ||
a4fd1a8e | 6241 | /* Populate an Arm to Thumb stub. Returns the stub symbol. */ |
9b485d32 | 6242 | |
a4fd1a8e PB |
6243 | static struct elf_link_hash_entry * |
6244 | elf32_arm_create_thumb_stub (struct bfd_link_info * info, | |
6245 | const char * name, | |
6246 | bfd * input_bfd, | |
6247 | bfd * output_bfd, | |
6248 | asection * sym_sec, | |
6249 | bfd_vma val, | |
8029a119 NC |
6250 | asection * s, |
6251 | char ** error_message) | |
252b5132 | 6252 | { |
dc810e39 | 6253 | bfd_vma my_offset; |
252b5132 | 6254 | long int ret_offset; |
bcbdc74c NC |
6255 | struct elf_link_hash_entry * myh; |
6256 | struct elf32_arm_link_hash_table * globals; | |
252b5132 | 6257 | |
f2a9dd69 | 6258 | myh = find_arm_glue (info, name, error_message); |
252b5132 | 6259 | if (myh == NULL) |
a4fd1a8e | 6260 | return NULL; |
252b5132 RH |
6261 | |
6262 | globals = elf32_arm_hash_table (info); | |
6263 | ||
6264 | BFD_ASSERT (globals != NULL); | |
6265 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
6266 | ||
6267 | my_offset = myh->root.u.def.value; | |
252b5132 RH |
6268 | |
6269 | if ((my_offset & 0x01) == 0x01) | |
6270 | { | |
6271 | if (sym_sec != NULL | |
6272 | && sym_sec->owner != NULL | |
6273 | && !INTERWORK_FLAG (sym_sec->owner)) | |
6274 | { | |
8f615d07 | 6275 | (*_bfd_error_handler) |
d003868e AM |
6276 | (_("%B(%s): warning: interworking not enabled.\n" |
6277 | " first occurrence: %B: arm call to thumb"), | |
6278 | sym_sec->owner, input_bfd, name); | |
252b5132 | 6279 | } |
9b485d32 | 6280 | |
252b5132 RH |
6281 | --my_offset; |
6282 | myh->root.u.def.value = my_offset; | |
6283 | ||
27e55c4d PB |
6284 | if (info->shared || globals->root.is_relocatable_executable |
6285 | || globals->pic_veneer) | |
8f6277f5 PB |
6286 | { |
6287 | /* For relocatable objects we can't use absolute addresses, | |
6288 | so construct the address from a relative offset. */ | |
6289 | /* TODO: If the offset is small it's probably worth | |
6290 | constructing the address with adds. */ | |
52ab56c2 PB |
6291 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t1p_ldr_insn, |
6292 | s->contents + my_offset); | |
6293 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t2p_add_pc_insn, | |
6294 | s->contents + my_offset + 4); | |
6295 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t3p_bx_r12_insn, | |
6296 | s->contents + my_offset + 8); | |
8f6277f5 PB |
6297 | /* Adjust the offset by 4 for the position of the add, |
6298 | and 8 for the pipeline offset. */ | |
6299 | ret_offset = (val - (s->output_offset | |
6300 | + s->output_section->vma | |
6301 | + my_offset + 12)) | |
6302 | | 1; | |
6303 | bfd_put_32 (output_bfd, ret_offset, | |
6304 | s->contents + my_offset + 12); | |
6305 | } | |
26079076 PB |
6306 | else if (globals->use_blx) |
6307 | { | |
6308 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t1v5_ldr_insn, | |
6309 | s->contents + my_offset); | |
6310 | ||
6311 | /* It's a thumb address. Add the low order bit. */ | |
6312 | bfd_put_32 (output_bfd, val | a2t2v5_func_addr_insn, | |
6313 | s->contents + my_offset + 4); | |
6314 | } | |
8f6277f5 PB |
6315 | else |
6316 | { | |
52ab56c2 PB |
6317 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t1_ldr_insn, |
6318 | s->contents + my_offset); | |
252b5132 | 6319 | |
52ab56c2 PB |
6320 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t2_bx_r12_insn, |
6321 | s->contents + my_offset + 4); | |
252b5132 | 6322 | |
8f6277f5 PB |
6323 | /* It's a thumb address. Add the low order bit. */ |
6324 | bfd_put_32 (output_bfd, val | a2t3_func_addr_insn, | |
6325 | s->contents + my_offset + 8); | |
8029a119 NC |
6326 | |
6327 | my_offset += 12; | |
8f6277f5 | 6328 | } |
252b5132 RH |
6329 | } |
6330 | ||
6331 | BFD_ASSERT (my_offset <= globals->arm_glue_size); | |
6332 | ||
a4fd1a8e PB |
6333 | return myh; |
6334 | } | |
6335 | ||
6336 | /* Arm code calling a Thumb function. */ | |
6337 | ||
6338 | static int | |
6339 | elf32_arm_to_thumb_stub (struct bfd_link_info * info, | |
6340 | const char * name, | |
6341 | bfd * input_bfd, | |
6342 | bfd * output_bfd, | |
6343 | asection * input_section, | |
6344 | bfd_byte * hit_data, | |
6345 | asection * sym_sec, | |
6346 | bfd_vma offset, | |
6347 | bfd_signed_vma addend, | |
f2a9dd69 DJ |
6348 | bfd_vma val, |
6349 | char **error_message) | |
a4fd1a8e PB |
6350 | { |
6351 | unsigned long int tmp; | |
6352 | bfd_vma my_offset; | |
6353 | asection * s; | |
6354 | long int ret_offset; | |
6355 | struct elf_link_hash_entry * myh; | |
6356 | struct elf32_arm_link_hash_table * globals; | |
6357 | ||
6358 | globals = elf32_arm_hash_table (info); | |
6359 | ||
6360 | BFD_ASSERT (globals != NULL); | |
6361 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
6362 | ||
6363 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
6364 | ARM2THUMB_GLUE_SECTION_NAME); | |
6365 | BFD_ASSERT (s != NULL); | |
6366 | BFD_ASSERT (s->contents != NULL); | |
6367 | BFD_ASSERT (s->output_section != NULL); | |
6368 | ||
6369 | myh = elf32_arm_create_thumb_stub (info, name, input_bfd, output_bfd, | |
f2a9dd69 | 6370 | sym_sec, val, s, error_message); |
a4fd1a8e PB |
6371 | if (!myh) |
6372 | return FALSE; | |
6373 | ||
6374 | my_offset = myh->root.u.def.value; | |
252b5132 RH |
6375 | tmp = bfd_get_32 (input_bfd, hit_data); |
6376 | tmp = tmp & 0xFF000000; | |
6377 | ||
9b485d32 | 6378 | /* Somehow these are both 4 too far, so subtract 8. */ |
dc810e39 AM |
6379 | ret_offset = (s->output_offset |
6380 | + my_offset | |
6381 | + s->output_section->vma | |
6382 | - (input_section->output_offset | |
6383 | + input_section->output_section->vma | |
6384 | + offset + addend) | |
6385 | - 8); | |
9a5aca8c | 6386 | |
252b5132 RH |
6387 | tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF); |
6388 | ||
dc810e39 | 6389 | bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma); |
252b5132 | 6390 | |
b34976b6 | 6391 | return TRUE; |
252b5132 RH |
6392 | } |
6393 | ||
a4fd1a8e PB |
6394 | /* Populate Arm stub for an exported Thumb function. */ |
6395 | ||
6396 | static bfd_boolean | |
6397 | elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry *h, void * inf) | |
6398 | { | |
6399 | struct bfd_link_info * info = (struct bfd_link_info *) inf; | |
6400 | asection * s; | |
6401 | struct elf_link_hash_entry * myh; | |
6402 | struct elf32_arm_link_hash_entry *eh; | |
6403 | struct elf32_arm_link_hash_table * globals; | |
6404 | asection *sec; | |
6405 | bfd_vma val; | |
f2a9dd69 | 6406 | char *error_message; |
a4fd1a8e | 6407 | |
906e58ca | 6408 | eh = elf32_arm_hash_entry (h); |
a4fd1a8e PB |
6409 | /* Allocate stubs for exported Thumb functions on v4t. */ |
6410 | if (eh->export_glue == NULL) | |
6411 | return TRUE; | |
6412 | ||
6413 | globals = elf32_arm_hash_table (info); | |
6414 | ||
6415 | BFD_ASSERT (globals != NULL); | |
6416 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
6417 | ||
6418 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
6419 | ARM2THUMB_GLUE_SECTION_NAME); | |
6420 | BFD_ASSERT (s != NULL); | |
6421 | BFD_ASSERT (s->contents != NULL); | |
6422 | BFD_ASSERT (s->output_section != NULL); | |
6423 | ||
6424 | sec = eh->export_glue->root.u.def.section; | |
0eaedd0e PB |
6425 | |
6426 | BFD_ASSERT (sec->output_section != NULL); | |
6427 | ||
a4fd1a8e PB |
6428 | val = eh->export_glue->root.u.def.value + sec->output_offset |
6429 | + sec->output_section->vma; | |
8029a119 | 6430 | |
a4fd1a8e PB |
6431 | myh = elf32_arm_create_thumb_stub (info, h->root.root.string, |
6432 | h->root.u.def.section->owner, | |
f2a9dd69 DJ |
6433 | globals->obfd, sec, val, s, |
6434 | &error_message); | |
a4fd1a8e PB |
6435 | BFD_ASSERT (myh); |
6436 | return TRUE; | |
6437 | } | |
6438 | ||
845b51d6 PB |
6439 | /* Populate ARMv4 BX veneers. Returns the absolute adress of the veneer. */ |
6440 | ||
6441 | static bfd_vma | |
6442 | elf32_arm_bx_glue (struct bfd_link_info * info, int reg) | |
6443 | { | |
6444 | bfd_byte *p; | |
6445 | bfd_vma glue_addr; | |
6446 | asection *s; | |
6447 | struct elf32_arm_link_hash_table *globals; | |
6448 | ||
6449 | globals = elf32_arm_hash_table (info); | |
6450 | ||
6451 | BFD_ASSERT (globals != NULL); | |
6452 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
6453 | ||
6454 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
6455 | ARM_BX_GLUE_SECTION_NAME); | |
6456 | BFD_ASSERT (s != NULL); | |
6457 | BFD_ASSERT (s->contents != NULL); | |
6458 | BFD_ASSERT (s->output_section != NULL); | |
6459 | ||
6460 | BFD_ASSERT (globals->bx_glue_offset[reg] & 2); | |
6461 | ||
6462 | glue_addr = globals->bx_glue_offset[reg] & ~(bfd_vma)3; | |
6463 | ||
6464 | if ((globals->bx_glue_offset[reg] & 1) == 0) | |
6465 | { | |
6466 | p = s->contents + glue_addr; | |
6467 | bfd_put_32 (globals->obfd, armbx1_tst_insn + (reg << 16), p); | |
6468 | bfd_put_32 (globals->obfd, armbx2_moveq_insn + reg, p + 4); | |
6469 | bfd_put_32 (globals->obfd, armbx3_bx_insn + reg, p + 8); | |
6470 | globals->bx_glue_offset[reg] |= 1; | |
6471 | } | |
6472 | ||
6473 | return glue_addr + s->output_section->vma + s->output_offset; | |
6474 | } | |
6475 | ||
a4fd1a8e PB |
6476 | /* Generate Arm stubs for exported Thumb symbols. */ |
6477 | static void | |
906e58ca | 6478 | elf32_arm_begin_write_processing (bfd *abfd ATTRIBUTE_UNUSED, |
a4fd1a8e PB |
6479 | struct bfd_link_info *link_info) |
6480 | { | |
6481 | struct elf32_arm_link_hash_table * globals; | |
6482 | ||
8029a119 NC |
6483 | if (link_info == NULL) |
6484 | /* Ignore this if we are not called by the ELF backend linker. */ | |
a4fd1a8e PB |
6485 | return; |
6486 | ||
6487 | globals = elf32_arm_hash_table (link_info); | |
84c08195 PB |
6488 | /* If blx is available then exported Thumb symbols are OK and there is |
6489 | nothing to do. */ | |
a4fd1a8e PB |
6490 | if (globals->use_blx) |
6491 | return; | |
6492 | ||
6493 | elf_link_hash_traverse (&globals->root, elf32_arm_to_thumb_export_stub, | |
6494 | link_info); | |
6495 | } | |
6496 | ||
eb043451 PB |
6497 | /* Some relocations map to different relocations depending on the |
6498 | target. Return the real relocation. */ | |
8029a119 | 6499 | |
eb043451 PB |
6500 | static int |
6501 | arm_real_reloc_type (struct elf32_arm_link_hash_table * globals, | |
6502 | int r_type) | |
6503 | { | |
6504 | switch (r_type) | |
6505 | { | |
6506 | case R_ARM_TARGET1: | |
6507 | if (globals->target1_is_rel) | |
6508 | return R_ARM_REL32; | |
6509 | else | |
6510 | return R_ARM_ABS32; | |
6511 | ||
6512 | case R_ARM_TARGET2: | |
6513 | return globals->target2_reloc; | |
6514 | ||
6515 | default: | |
6516 | return r_type; | |
6517 | } | |
6518 | } | |
eb043451 | 6519 | |
ba93b8ac DJ |
6520 | /* Return the base VMA address which should be subtracted from real addresses |
6521 | when resolving @dtpoff relocation. | |
6522 | This is PT_TLS segment p_vaddr. */ | |
6523 | ||
6524 | static bfd_vma | |
6525 | dtpoff_base (struct bfd_link_info *info) | |
6526 | { | |
6527 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
6528 | if (elf_hash_table (info)->tls_sec == NULL) | |
6529 | return 0; | |
6530 | return elf_hash_table (info)->tls_sec->vma; | |
6531 | } | |
6532 | ||
6533 | /* Return the relocation value for @tpoff relocation | |
6534 | if STT_TLS virtual address is ADDRESS. */ | |
6535 | ||
6536 | static bfd_vma | |
6537 | tpoff (struct bfd_link_info *info, bfd_vma address) | |
6538 | { | |
6539 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
6540 | bfd_vma base; | |
6541 | ||
6542 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
6543 | if (htab->tls_sec == NULL) | |
6544 | return 0; | |
6545 | base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power); | |
6546 | return address - htab->tls_sec->vma + base; | |
6547 | } | |
6548 | ||
00a97672 RS |
6549 | /* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA. |
6550 | VALUE is the relocation value. */ | |
6551 | ||
6552 | static bfd_reloc_status_type | |
6553 | elf32_arm_abs12_reloc (bfd *abfd, void *data, bfd_vma value) | |
6554 | { | |
6555 | if (value > 0xfff) | |
6556 | return bfd_reloc_overflow; | |
6557 | ||
6558 | value |= bfd_get_32 (abfd, data) & 0xfffff000; | |
6559 | bfd_put_32 (abfd, value, data); | |
6560 | return bfd_reloc_ok; | |
6561 | } | |
6562 | ||
4962c51a MS |
6563 | /* For a given value of n, calculate the value of G_n as required to |
6564 | deal with group relocations. We return it in the form of an | |
6565 | encoded constant-and-rotation, together with the final residual. If n is | |
6566 | specified as less than zero, then final_residual is filled with the | |
6567 | input value and no further action is performed. */ | |
6568 | ||
6569 | static bfd_vma | |
6570 | calculate_group_reloc_mask (bfd_vma value, int n, bfd_vma *final_residual) | |
6571 | { | |
6572 | int current_n; | |
6573 | bfd_vma g_n; | |
6574 | bfd_vma encoded_g_n = 0; | |
6575 | bfd_vma residual = value; /* Also known as Y_n. */ | |
6576 | ||
6577 | for (current_n = 0; current_n <= n; current_n++) | |
6578 | { | |
6579 | int shift; | |
6580 | ||
6581 | /* Calculate which part of the value to mask. */ | |
6582 | if (residual == 0) | |
6583 | shift = 0; | |
6584 | else | |
6585 | { | |
6586 | int msb; | |
6587 | ||
6588 | /* Determine the most significant bit in the residual and | |
6589 | align the resulting value to a 2-bit boundary. */ | |
6590 | for (msb = 30; msb >= 0; msb -= 2) | |
6591 | if (residual & (3 << msb)) | |
6592 | break; | |
6593 | ||
6594 | /* The desired shift is now (msb - 6), or zero, whichever | |
6595 | is the greater. */ | |
6596 | shift = msb - 6; | |
6597 | if (shift < 0) | |
6598 | shift = 0; | |
6599 | } | |
6600 | ||
6601 | /* Calculate g_n in 32-bit as well as encoded constant+rotation form. */ | |
6602 | g_n = residual & (0xff << shift); | |
6603 | encoded_g_n = (g_n >> shift) | |
6604 | | ((g_n <= 0xff ? 0 : (32 - shift) / 2) << 8); | |
6605 | ||
6606 | /* Calculate the residual for the next time around. */ | |
6607 | residual &= ~g_n; | |
6608 | } | |
6609 | ||
6610 | *final_residual = residual; | |
6611 | ||
6612 | return encoded_g_n; | |
6613 | } | |
6614 | ||
6615 | /* Given an ARM instruction, determine whether it is an ADD or a SUB. | |
6616 | Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */ | |
906e58ca | 6617 | |
4962c51a | 6618 | static int |
906e58ca | 6619 | identify_add_or_sub (bfd_vma insn) |
4962c51a MS |
6620 | { |
6621 | int opcode = insn & 0x1e00000; | |
6622 | ||
6623 | if (opcode == 1 << 23) /* ADD */ | |
6624 | return 1; | |
6625 | ||
6626 | if (opcode == 1 << 22) /* SUB */ | |
6627 | return -1; | |
6628 | ||
6629 | return 0; | |
6630 | } | |
6631 | ||
252b5132 | 6632 | /* Perform a relocation as part of a final link. */ |
9b485d32 | 6633 | |
252b5132 | 6634 | static bfd_reloc_status_type |
57e8b36a NC |
6635 | elf32_arm_final_link_relocate (reloc_howto_type * howto, |
6636 | bfd * input_bfd, | |
6637 | bfd * output_bfd, | |
6638 | asection * input_section, | |
6639 | bfd_byte * contents, | |
6640 | Elf_Internal_Rela * rel, | |
6641 | bfd_vma value, | |
6642 | struct bfd_link_info * info, | |
6643 | asection * sym_sec, | |
6644 | const char * sym_name, | |
6645 | int sym_flags, | |
0945cdfd | 6646 | struct elf_link_hash_entry * h, |
f2a9dd69 | 6647 | bfd_boolean * unresolved_reloc_p, |
8029a119 | 6648 | char ** error_message) |
252b5132 RH |
6649 | { |
6650 | unsigned long r_type = howto->type; | |
6651 | unsigned long r_symndx; | |
6652 | bfd_byte * hit_data = contents + rel->r_offset; | |
6653 | bfd * dynobj = NULL; | |
6654 | Elf_Internal_Shdr * symtab_hdr; | |
6655 | struct elf_link_hash_entry ** sym_hashes; | |
6656 | bfd_vma * local_got_offsets; | |
6657 | asection * sgot = NULL; | |
6658 | asection * splt = NULL; | |
6659 | asection * sreloc = NULL; | |
252b5132 | 6660 | bfd_vma addend; |
ba96a88f NC |
6661 | bfd_signed_vma signed_addend; |
6662 | struct elf32_arm_link_hash_table * globals; | |
f21f3fe0 | 6663 | |
9c504268 PB |
6664 | globals = elf32_arm_hash_table (info); |
6665 | ||
0ffa91dd NC |
6666 | BFD_ASSERT (is_arm_elf (input_bfd)); |
6667 | ||
6668 | /* Some relocation types map to different relocations depending on the | |
9c504268 | 6669 | target. We pick the right one here. */ |
eb043451 PB |
6670 | r_type = arm_real_reloc_type (globals, r_type); |
6671 | if (r_type != howto->type) | |
6672 | howto = elf32_arm_howto_from_type (r_type); | |
9c504268 | 6673 | |
cac15327 NC |
6674 | /* If the start address has been set, then set the EF_ARM_HASENTRY |
6675 | flag. Setting this more than once is redundant, but the cost is | |
6676 | not too high, and it keeps the code simple. | |
99e4ae17 | 6677 | |
cac15327 NC |
6678 | The test is done here, rather than somewhere else, because the |
6679 | start address is only set just before the final link commences. | |
6680 | ||
6681 | Note - if the user deliberately sets a start address of 0, the | |
6682 | flag will not be set. */ | |
6683 | if (bfd_get_start_address (output_bfd) != 0) | |
6684 | elf_elfheader (output_bfd)->e_flags |= EF_ARM_HASENTRY; | |
99e4ae17 | 6685 | |
252b5132 RH |
6686 | dynobj = elf_hash_table (info)->dynobj; |
6687 | if (dynobj) | |
6688 | { | |
6689 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
6690 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
6691 | } | |
0ffa91dd | 6692 | symtab_hdr = & elf_symtab_hdr (input_bfd); |
252b5132 RH |
6693 | sym_hashes = elf_sym_hashes (input_bfd); |
6694 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
6695 | r_symndx = ELF32_R_SYM (rel->r_info); | |
6696 | ||
4e7fd91e | 6697 | if (globals->use_rel) |
ba96a88f | 6698 | { |
4e7fd91e PB |
6699 | addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask; |
6700 | ||
6701 | if (addend & ((howto->src_mask + 1) >> 1)) | |
6702 | { | |
6703 | signed_addend = -1; | |
6704 | signed_addend &= ~ howto->src_mask; | |
6705 | signed_addend |= addend; | |
6706 | } | |
6707 | else | |
6708 | signed_addend = addend; | |
ba96a88f NC |
6709 | } |
6710 | else | |
4e7fd91e | 6711 | addend = signed_addend = rel->r_addend; |
f21f3fe0 | 6712 | |
252b5132 RH |
6713 | switch (r_type) |
6714 | { | |
6715 | case R_ARM_NONE: | |
28a094c2 DJ |
6716 | /* We don't need to find a value for this symbol. It's just a |
6717 | marker. */ | |
6718 | *unresolved_reloc_p = FALSE; | |
252b5132 RH |
6719 | return bfd_reloc_ok; |
6720 | ||
00a97672 RS |
6721 | case R_ARM_ABS12: |
6722 | if (!globals->vxworks_p) | |
6723 | return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend); | |
6724 | ||
252b5132 RH |
6725 | case R_ARM_PC24: |
6726 | case R_ARM_ABS32: | |
bb224fc3 | 6727 | case R_ARM_ABS32_NOI: |
252b5132 | 6728 | case R_ARM_REL32: |
bb224fc3 | 6729 | case R_ARM_REL32_NOI: |
5b5bb741 PB |
6730 | case R_ARM_CALL: |
6731 | case R_ARM_JUMP24: | |
dfc5f959 | 6732 | case R_ARM_XPC25: |
eb043451 | 6733 | case R_ARM_PREL31: |
7359ea65 | 6734 | case R_ARM_PLT32: |
7359ea65 DJ |
6735 | /* Handle relocations which should use the PLT entry. ABS32/REL32 |
6736 | will use the symbol's value, which may point to a PLT entry, but we | |
6737 | don't need to handle that here. If we created a PLT entry, all | |
5fa9e92f CL |
6738 | branches in this object should go to it, except if the PLT is too |
6739 | far away, in which case a long branch stub should be inserted. */ | |
bb224fc3 | 6740 | if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32 |
5fa9e92f | 6741 | && r_type != R_ARM_ABS32_NOI && r_type != R_ARM_REL32_NOI |
155d87d7 CL |
6742 | && r_type != R_ARM_CALL |
6743 | && r_type != R_ARM_JUMP24 | |
6744 | && r_type != R_ARM_PLT32) | |
7359ea65 | 6745 | && h != NULL |
c84cd8ee | 6746 | && splt != NULL |
7359ea65 DJ |
6747 | && h->plt.offset != (bfd_vma) -1) |
6748 | { | |
c84cd8ee DJ |
6749 | /* If we've created a .plt section, and assigned a PLT entry to |
6750 | this function, it should not be known to bind locally. If | |
6751 | it were, we would have cleared the PLT entry. */ | |
7359ea65 DJ |
6752 | BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info, h)); |
6753 | ||
6754 | value = (splt->output_section->vma | |
6755 | + splt->output_offset | |
6756 | + h->plt.offset); | |
0945cdfd | 6757 | *unresolved_reloc_p = FALSE; |
7359ea65 DJ |
6758 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
6759 | contents, rel->r_offset, value, | |
00a97672 | 6760 | rel->r_addend); |
7359ea65 DJ |
6761 | } |
6762 | ||
67687978 PB |
6763 | /* When generating a shared object or relocatable executable, these |
6764 | relocations are copied into the output file to be resolved at | |
6765 | run time. */ | |
6766 | if ((info->shared || globals->root.is_relocatable_executable) | |
7359ea65 | 6767 | && (input_section->flags & SEC_ALLOC) |
3348747a NS |
6768 | && !(elf32_arm_hash_table (info)->vxworks_p |
6769 | && strcmp (input_section->output_section->name, | |
6770 | ".tls_vars") == 0) | |
bb224fc3 | 6771 | && ((r_type != R_ARM_REL32 && r_type != R_ARM_REL32_NOI) |
ee06dc07 | 6772 | || !SYMBOL_CALLS_LOCAL (info, h)) |
7359ea65 DJ |
6773 | && (h == NULL |
6774 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6775 | || h->root.type != bfd_link_hash_undefweak) | |
6776 | && r_type != R_ARM_PC24 | |
5b5bb741 PB |
6777 | && r_type != R_ARM_CALL |
6778 | && r_type != R_ARM_JUMP24 | |
ee06dc07 | 6779 | && r_type != R_ARM_PREL31 |
7359ea65 | 6780 | && r_type != R_ARM_PLT32) |
252b5132 | 6781 | { |
947216bf AM |
6782 | Elf_Internal_Rela outrel; |
6783 | bfd_byte *loc; | |
b34976b6 | 6784 | bfd_boolean skip, relocate; |
f21f3fe0 | 6785 | |
0945cdfd DJ |
6786 | *unresolved_reloc_p = FALSE; |
6787 | ||
252b5132 RH |
6788 | if (sreloc == NULL) |
6789 | { | |
83bac4b0 NC |
6790 | sreloc = _bfd_elf_get_dynamic_reloc_section (input_bfd, input_section, |
6791 | ! globals->use_rel); | |
f21f3fe0 | 6792 | |
83bac4b0 | 6793 | if (sreloc == NULL) |
252b5132 | 6794 | return bfd_reloc_notsupported; |
252b5132 | 6795 | } |
f21f3fe0 | 6796 | |
b34976b6 AM |
6797 | skip = FALSE; |
6798 | relocate = FALSE; | |
f21f3fe0 | 6799 | |
00a97672 | 6800 | outrel.r_addend = addend; |
c629eae0 JJ |
6801 | outrel.r_offset = |
6802 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
6803 | rel->r_offset); | |
6804 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 6805 | skip = TRUE; |
0bb2d96a | 6806 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 6807 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
6808 | outrel.r_offset += (input_section->output_section->vma |
6809 | + input_section->output_offset); | |
f21f3fe0 | 6810 | |
252b5132 | 6811 | if (skip) |
0bb2d96a | 6812 | memset (&outrel, 0, sizeof outrel); |
5e681ec4 PB |
6813 | else if (h != NULL |
6814 | && h->dynindx != -1 | |
7359ea65 | 6815 | && (!info->shared |
5e681ec4 | 6816 | || !info->symbolic |
f5385ebf | 6817 | || !h->def_regular)) |
5e681ec4 | 6818 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
252b5132 RH |
6819 | else |
6820 | { | |
a16385dc MM |
6821 | int symbol; |
6822 | ||
5e681ec4 | 6823 | /* This symbol is local, or marked to become local. */ |
b7693d02 DJ |
6824 | if (sym_flags == STT_ARM_TFUNC) |
6825 | value |= 1; | |
a16385dc | 6826 | if (globals->symbian_p) |
6366ff1e | 6827 | { |
74541ad4 AM |
6828 | asection *osec; |
6829 | ||
6366ff1e MM |
6830 | /* On Symbian OS, the data segment and text segement |
6831 | can be relocated independently. Therefore, we | |
6832 | must indicate the segment to which this | |
6833 | relocation is relative. The BPABI allows us to | |
6834 | use any symbol in the right segment; we just use | |
6835 | the section symbol as it is convenient. (We | |
6836 | cannot use the symbol given by "h" directly as it | |
74541ad4 AM |
6837 | will not appear in the dynamic symbol table.) |
6838 | ||
6839 | Note that the dynamic linker ignores the section | |
6840 | symbol value, so we don't subtract osec->vma | |
6841 | from the emitted reloc addend. */ | |
10dbd1f3 | 6842 | if (sym_sec) |
74541ad4 | 6843 | osec = sym_sec->output_section; |
10dbd1f3 | 6844 | else |
74541ad4 AM |
6845 | osec = input_section->output_section; |
6846 | symbol = elf_section_data (osec)->dynindx; | |
6847 | if (symbol == 0) | |
6848 | { | |
6849 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
6850 | ||
6851 | if ((osec->flags & SEC_READONLY) == 0 | |
6852 | && htab->data_index_section != NULL) | |
6853 | osec = htab->data_index_section; | |
6854 | else | |
6855 | osec = htab->text_index_section; | |
6856 | symbol = elf_section_data (osec)->dynindx; | |
6857 | } | |
6366ff1e MM |
6858 | BFD_ASSERT (symbol != 0); |
6859 | } | |
a16385dc MM |
6860 | else |
6861 | /* On SVR4-ish systems, the dynamic loader cannot | |
6862 | relocate the text and data segments independently, | |
6863 | so the symbol does not matter. */ | |
6864 | symbol = 0; | |
6865 | outrel.r_info = ELF32_R_INFO (symbol, R_ARM_RELATIVE); | |
00a97672 RS |
6866 | if (globals->use_rel) |
6867 | relocate = TRUE; | |
6868 | else | |
6869 | outrel.r_addend += value; | |
252b5132 | 6870 | } |
f21f3fe0 | 6871 | |
947216bf | 6872 | loc = sreloc->contents; |
00a97672 RS |
6873 | loc += sreloc->reloc_count++ * RELOC_SIZE (globals); |
6874 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
9a5aca8c | 6875 | |
f21f3fe0 | 6876 | /* If this reloc is against an external symbol, we do not want to |
252b5132 | 6877 | fiddle with the addend. Otherwise, we need to include the symbol |
9b485d32 | 6878 | value so that it becomes an addend for the dynamic reloc. */ |
252b5132 RH |
6879 | if (! relocate) |
6880 | return bfd_reloc_ok; | |
9a5aca8c | 6881 | |
f21f3fe0 | 6882 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
252b5132 RH |
6883 | contents, rel->r_offset, value, |
6884 | (bfd_vma) 0); | |
6885 | } | |
6886 | else switch (r_type) | |
6887 | { | |
00a97672 RS |
6888 | case R_ARM_ABS12: |
6889 | return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend); | |
6890 | ||
dfc5f959 | 6891 | case R_ARM_XPC25: /* Arm BLX instruction. */ |
5b5bb741 PB |
6892 | case R_ARM_CALL: |
6893 | case R_ARM_JUMP24: | |
8029a119 | 6894 | case R_ARM_PC24: /* Arm B/BL instruction. */ |
7359ea65 | 6895 | case R_ARM_PLT32: |
906e58ca NC |
6896 | { |
6897 | bfd_vma from; | |
6898 | bfd_signed_vma branch_offset; | |
6899 | struct elf32_arm_stub_hash_entry *stub_entry = NULL; | |
6900 | ||
dfc5f959 | 6901 | if (r_type == R_ARM_XPC25) |
252b5132 | 6902 | { |
dfc5f959 NC |
6903 | /* Check for Arm calling Arm function. */ |
6904 | /* FIXME: Should we translate the instruction into a BL | |
6905 | instruction instead ? */ | |
6906 | if (sym_flags != STT_ARM_TFUNC) | |
d003868e AM |
6907 | (*_bfd_error_handler) |
6908 | (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."), | |
6909 | input_bfd, | |
6910 | h ? h->root.root.string : "(local)"); | |
dfc5f959 | 6911 | } |
155d87d7 | 6912 | else if (r_type == R_ARM_PC24) |
dfc5f959 NC |
6913 | { |
6914 | /* Check for Arm calling Thumb function. */ | |
6915 | if (sym_flags == STT_ARM_TFUNC) | |
6916 | { | |
f2a9dd69 DJ |
6917 | if (elf32_arm_to_thumb_stub (info, sym_name, input_bfd, |
6918 | output_bfd, input_section, | |
6919 | hit_data, sym_sec, rel->r_offset, | |
6920 | signed_addend, value, | |
6921 | error_message)) | |
6922 | return bfd_reloc_ok; | |
6923 | else | |
6924 | return bfd_reloc_dangerous; | |
dfc5f959 | 6925 | } |
252b5132 | 6926 | } |
ba96a88f | 6927 | |
906e58ca | 6928 | /* Check if a stub has to be inserted because the |
8029a119 | 6929 | destination is too far or we are changing mode. */ |
155d87d7 CL |
6930 | if ( r_type == R_ARM_CALL |
6931 | || r_type == R_ARM_JUMP24 | |
6932 | || r_type == R_ARM_PLT32) | |
906e58ca | 6933 | { |
5fa9e92f CL |
6934 | /* If the call goes through a PLT entry, make sure to |
6935 | check distance to the right destination address. */ | |
6936 | if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1) | |
6937 | { | |
6938 | value = (splt->output_section->vma | |
6939 | + splt->output_offset | |
6940 | + h->plt.offset); | |
6941 | *unresolved_reloc_p = FALSE; | |
6942 | } | |
6943 | ||
6944 | from = (input_section->output_section->vma | |
6945 | + input_section->output_offset | |
6946 | + rel->r_offset); | |
6947 | branch_offset = (bfd_signed_vma)(value - from); | |
6948 | ||
906e58ca NC |
6949 | if (branch_offset > ARM_MAX_FWD_BRANCH_OFFSET |
6950 | || branch_offset < ARM_MAX_BWD_BRANCH_OFFSET | |
155d87d7 CL |
6951 | || ((sym_flags == STT_ARM_TFUNC) |
6952 | && (((r_type == R_ARM_CALL) && !globals->use_blx) | |
6953 | || (r_type == R_ARM_JUMP24) | |
6954 | || (r_type == R_ARM_PLT32) )) | |
6955 | ) | |
906e58ca NC |
6956 | { |
6957 | /* The target is out of reach, so redirect the | |
6958 | branch to the local stub for this function. */ | |
6959 | ||
6960 | stub_entry = elf32_arm_get_stub_entry (input_section, | |
6961 | sym_sec, h, | |
6962 | rel, globals); | |
6963 | if (stub_entry != NULL) | |
6964 | value = (stub_entry->stub_offset | |
6965 | + stub_entry->stub_sec->output_offset | |
6966 | + stub_entry->stub_sec->output_section->vma); | |
6967 | } | |
6968 | } | |
6969 | ||
dea514f5 PB |
6970 | /* The ARM ELF ABI says that this reloc is computed as: S - P + A |
6971 | where: | |
6972 | S is the address of the symbol in the relocation. | |
6973 | P is address of the instruction being relocated. | |
6974 | A is the addend (extracted from the instruction) in bytes. | |
6975 | ||
6976 | S is held in 'value'. | |
6977 | P is the base address of the section containing the | |
6978 | instruction plus the offset of the reloc into that | |
6979 | section, ie: | |
6980 | (input_section->output_section->vma + | |
6981 | input_section->output_offset + | |
6982 | rel->r_offset). | |
6983 | A is the addend, converted into bytes, ie: | |
6984 | (signed_addend * 4) | |
6985 | ||
6986 | Note: None of these operations have knowledge of the pipeline | |
6987 | size of the processor, thus it is up to the assembler to | |
6988 | encode this information into the addend. */ | |
6989 | value -= (input_section->output_section->vma | |
6990 | + input_section->output_offset); | |
6991 | value -= rel->r_offset; | |
4e7fd91e PB |
6992 | if (globals->use_rel) |
6993 | value += (signed_addend << howto->size); | |
6994 | else | |
6995 | /* RELA addends do not have to be adjusted by howto->size. */ | |
6996 | value += signed_addend; | |
23080146 | 6997 | |
dcb5e6e6 NC |
6998 | signed_addend = value; |
6999 | signed_addend >>= howto->rightshift; | |
9a5aca8c | 7000 | |
5ab79981 | 7001 | /* A branch to an undefined weak symbol is turned into a jump to |
82b5c97a CL |
7002 | the next instruction unless a PLT entry will be created. */ |
7003 | if (h && h->root.type == bfd_link_hash_undefweak | |
7004 | && !(splt != NULL && h->plt.offset != (bfd_vma) -1)) | |
5ab79981 PB |
7005 | { |
7006 | value = (bfd_get_32 (input_bfd, hit_data) & 0xf0000000) | |
7007 | | 0x0affffff; | |
7008 | } | |
7009 | else | |
59f2c4e7 | 7010 | { |
9b485d32 | 7011 | /* Perform a signed range check. */ |
dcb5e6e6 | 7012 | if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1)) |
59f2c4e7 NC |
7013 | || signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1))) |
7014 | return bfd_reloc_overflow; | |
9a5aca8c | 7015 | |
5ab79981 | 7016 | addend = (value & 2); |
39b41c9c | 7017 | |
5ab79981 PB |
7018 | value = (signed_addend & howto->dst_mask) |
7019 | | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask)); | |
39b41c9c | 7020 | |
5ab79981 PB |
7021 | if (r_type == R_ARM_CALL) |
7022 | { | |
155d87d7 CL |
7023 | /* Set the H bit in the BLX instruction. */ |
7024 | if (sym_flags == STT_ARM_TFUNC) | |
7025 | { | |
7026 | if (addend) | |
7027 | value |= (1 << 24); | |
7028 | else | |
7029 | value &= ~(bfd_vma)(1 << 24); | |
7030 | } | |
7031 | ||
5ab79981 | 7032 | /* Select the correct instruction (BL or BLX). */ |
906e58ca | 7033 | /* Only if we are not handling a BL to a stub. In this |
8029a119 | 7034 | case, mode switching is performed by the stub. */ |
906e58ca | 7035 | if (sym_flags == STT_ARM_TFUNC && !stub_entry) |
5ab79981 PB |
7036 | value |= (1 << 28); |
7037 | else | |
7038 | { | |
7039 | value &= ~(bfd_vma)(1 << 28); | |
7040 | value |= (1 << 24); | |
7041 | } | |
39b41c9c PB |
7042 | } |
7043 | } | |
906e58ca | 7044 | } |
252b5132 | 7045 | break; |
f21f3fe0 | 7046 | |
252b5132 RH |
7047 | case R_ARM_ABS32: |
7048 | value += addend; | |
7049 | if (sym_flags == STT_ARM_TFUNC) | |
7050 | value |= 1; | |
7051 | break; | |
f21f3fe0 | 7052 | |
bb224fc3 MS |
7053 | case R_ARM_ABS32_NOI: |
7054 | value += addend; | |
7055 | break; | |
7056 | ||
252b5132 | 7057 | case R_ARM_REL32: |
a8bc6c78 PB |
7058 | value += addend; |
7059 | if (sym_flags == STT_ARM_TFUNC) | |
7060 | value |= 1; | |
252b5132 | 7061 | value -= (input_section->output_section->vma |
62efb346 | 7062 | + input_section->output_offset + rel->r_offset); |
252b5132 | 7063 | break; |
eb043451 | 7064 | |
bb224fc3 MS |
7065 | case R_ARM_REL32_NOI: |
7066 | value += addend; | |
7067 | value -= (input_section->output_section->vma | |
7068 | + input_section->output_offset + rel->r_offset); | |
7069 | break; | |
7070 | ||
eb043451 PB |
7071 | case R_ARM_PREL31: |
7072 | value -= (input_section->output_section->vma | |
7073 | + input_section->output_offset + rel->r_offset); | |
7074 | value += signed_addend; | |
7075 | if (! h || h->root.type != bfd_link_hash_undefweak) | |
7076 | { | |
8029a119 | 7077 | /* Check for overflow. */ |
eb043451 PB |
7078 | if ((value ^ (value >> 1)) & (1 << 30)) |
7079 | return bfd_reloc_overflow; | |
7080 | } | |
7081 | value &= 0x7fffffff; | |
7082 | value |= (bfd_get_32 (input_bfd, hit_data) & 0x80000000); | |
7083 | if (sym_flags == STT_ARM_TFUNC) | |
7084 | value |= 1; | |
7085 | break; | |
252b5132 | 7086 | } |
f21f3fe0 | 7087 | |
252b5132 RH |
7088 | bfd_put_32 (input_bfd, value, hit_data); |
7089 | return bfd_reloc_ok; | |
7090 | ||
7091 | case R_ARM_ABS8: | |
7092 | value += addend; | |
7093 | if ((long) value > 0x7f || (long) value < -0x80) | |
7094 | return bfd_reloc_overflow; | |
7095 | ||
7096 | bfd_put_8 (input_bfd, value, hit_data); | |
7097 | return bfd_reloc_ok; | |
7098 | ||
7099 | case R_ARM_ABS16: | |
7100 | value += addend; | |
7101 | ||
7102 | if ((long) value > 0x7fff || (long) value < -0x8000) | |
7103 | return bfd_reloc_overflow; | |
7104 | ||
7105 | bfd_put_16 (input_bfd, value, hit_data); | |
7106 | return bfd_reloc_ok; | |
7107 | ||
252b5132 | 7108 | case R_ARM_THM_ABS5: |
9b485d32 | 7109 | /* Support ldr and str instructions for the thumb. */ |
4e7fd91e PB |
7110 | if (globals->use_rel) |
7111 | { | |
7112 | /* Need to refetch addend. */ | |
7113 | addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask; | |
7114 | /* ??? Need to determine shift amount from operand size. */ | |
7115 | addend >>= howto->rightshift; | |
7116 | } | |
252b5132 RH |
7117 | value += addend; |
7118 | ||
7119 | /* ??? Isn't value unsigned? */ | |
7120 | if ((long) value > 0x1f || (long) value < -0x10) | |
7121 | return bfd_reloc_overflow; | |
7122 | ||
7123 | /* ??? Value needs to be properly shifted into place first. */ | |
7124 | value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f; | |
7125 | bfd_put_16 (input_bfd, value, hit_data); | |
7126 | return bfd_reloc_ok; | |
7127 | ||
2cab6cc3 MS |
7128 | case R_ARM_THM_ALU_PREL_11_0: |
7129 | /* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */ | |
7130 | { | |
7131 | bfd_vma insn; | |
7132 | bfd_signed_vma relocation; | |
7133 | ||
7134 | insn = (bfd_get_16 (input_bfd, hit_data) << 16) | |
7135 | | bfd_get_16 (input_bfd, hit_data + 2); | |
7136 | ||
7137 | if (globals->use_rel) | |
7138 | { | |
7139 | signed_addend = (insn & 0xff) | ((insn & 0x7000) >> 4) | |
7140 | | ((insn & (1 << 26)) >> 15); | |
7141 | if (insn & 0xf00000) | |
7142 | signed_addend = -signed_addend; | |
7143 | } | |
7144 | ||
7145 | relocation = value + signed_addend; | |
7146 | relocation -= (input_section->output_section->vma | |
7147 | + input_section->output_offset | |
7148 | + rel->r_offset); | |
7149 | ||
7150 | value = abs (relocation); | |
7151 | ||
7152 | if (value >= 0x1000) | |
7153 | return bfd_reloc_overflow; | |
7154 | ||
7155 | insn = (insn & 0xfb0f8f00) | (value & 0xff) | |
7156 | | ((value & 0x700) << 4) | |
7157 | | ((value & 0x800) << 15); | |
7158 | if (relocation < 0) | |
7159 | insn |= 0xa00000; | |
7160 | ||
7161 | bfd_put_16 (input_bfd, insn >> 16, hit_data); | |
7162 | bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2); | |
7163 | ||
7164 | return bfd_reloc_ok; | |
7165 | } | |
7166 | ||
7167 | case R_ARM_THM_PC12: | |
7168 | /* Corresponds to: ldr.w reg, [pc, #offset]. */ | |
7169 | { | |
7170 | bfd_vma insn; | |
7171 | bfd_signed_vma relocation; | |
7172 | ||
7173 | insn = (bfd_get_16 (input_bfd, hit_data) << 16) | |
7174 | | bfd_get_16 (input_bfd, hit_data + 2); | |
7175 | ||
7176 | if (globals->use_rel) | |
7177 | { | |
7178 | signed_addend = insn & 0xfff; | |
7179 | if (!(insn & (1 << 23))) | |
7180 | signed_addend = -signed_addend; | |
7181 | } | |
7182 | ||
7183 | relocation = value + signed_addend; | |
7184 | relocation -= (input_section->output_section->vma | |
7185 | + input_section->output_offset | |
7186 | + rel->r_offset); | |
7187 | ||
7188 | value = abs (relocation); | |
7189 | ||
7190 | if (value >= 0x1000) | |
7191 | return bfd_reloc_overflow; | |
7192 | ||
7193 | insn = (insn & 0xff7ff000) | value; | |
7194 | if (relocation >= 0) | |
7195 | insn |= (1 << 23); | |
7196 | ||
7197 | bfd_put_16 (input_bfd, insn >> 16, hit_data); | |
7198 | bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2); | |
7199 | ||
7200 | return bfd_reloc_ok; | |
7201 | } | |
7202 | ||
dfc5f959 | 7203 | case R_ARM_THM_XPC22: |
c19d1205 | 7204 | case R_ARM_THM_CALL: |
bd97cb95 | 7205 | case R_ARM_THM_JUMP24: |
dfc5f959 | 7206 | /* Thumb BL (branch long instruction). */ |
252b5132 | 7207 | { |
b34976b6 | 7208 | bfd_vma relocation; |
e95de063 | 7209 | bfd_vma reloc_sign; |
b34976b6 AM |
7210 | bfd_boolean overflow = FALSE; |
7211 | bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); | |
7212 | bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); | |
e95de063 MS |
7213 | bfd_signed_vma reloc_signed_max; |
7214 | bfd_signed_vma reloc_signed_min; | |
b34976b6 | 7215 | bfd_vma check; |
252b5132 | 7216 | bfd_signed_vma signed_check; |
e95de063 MS |
7217 | int bitsize; |
7218 | int thumb2 = using_thumb2 (globals); | |
252b5132 | 7219 | |
5ab79981 | 7220 | /* A branch to an undefined weak symbol is turned into a jump to |
19540007 JM |
7221 | the next instruction unless a PLT entry will be created. */ |
7222 | if (h && h->root.type == bfd_link_hash_undefweak | |
7223 | && !(splt != NULL && h->plt.offset != (bfd_vma) -1)) | |
5ab79981 PB |
7224 | { |
7225 | bfd_put_16 (input_bfd, 0xe000, hit_data); | |
7226 | bfd_put_16 (input_bfd, 0xbf00, hit_data + 2); | |
7227 | return bfd_reloc_ok; | |
7228 | } | |
7229 | ||
e95de063 MS |
7230 | /* Fetch the addend. We use the Thumb-2 encoding (backwards compatible |
7231 | with Thumb-1) involving the J1 and J2 bits. */ | |
4e7fd91e PB |
7232 | if (globals->use_rel) |
7233 | { | |
e95de063 MS |
7234 | bfd_vma s = (upper_insn & (1 << 10)) >> 10; |
7235 | bfd_vma upper = upper_insn & 0x3ff; | |
7236 | bfd_vma lower = lower_insn & 0x7ff; | |
7237 | bfd_vma j1 = (lower_insn & (1 << 13)) >> 13; | |
7238 | bfd_vma j2 = (lower_insn & (1 << 11)) >> 11; | |
7239 | bfd_vma i1 = j1 ^ s ? 0 : 1; | |
7240 | bfd_vma i2 = j2 ^ s ? 0 : 1; | |
7241 | ||
7242 | addend = (i1 << 23) | (i2 << 22) | (upper << 12) | (lower << 1); | |
7243 | /* Sign extend. */ | |
7244 | addend = (addend | ((s ? 0 : 1) << 24)) - (1 << 24); | |
7245 | ||
4e7fd91e PB |
7246 | signed_addend = addend; |
7247 | } | |
cb1afa5c | 7248 | |
dfc5f959 NC |
7249 | if (r_type == R_ARM_THM_XPC22) |
7250 | { | |
7251 | /* Check for Thumb to Thumb call. */ | |
7252 | /* FIXME: Should we translate the instruction into a BL | |
7253 | instruction instead ? */ | |
7254 | if (sym_flags == STT_ARM_TFUNC) | |
d003868e AM |
7255 | (*_bfd_error_handler) |
7256 | (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."), | |
7257 | input_bfd, | |
7258 | h ? h->root.root.string : "(local)"); | |
dfc5f959 NC |
7259 | } |
7260 | else | |
252b5132 | 7261 | { |
dfc5f959 NC |
7262 | /* If it is not a call to Thumb, assume call to Arm. |
7263 | If it is a call relative to a section name, then it is not a | |
b7693d02 DJ |
7264 | function call at all, but rather a long jump. Calls through |
7265 | the PLT do not require stubs. */ | |
7266 | if (sym_flags != STT_ARM_TFUNC && sym_flags != STT_SECTION | |
7267 | && (h == NULL || splt == NULL | |
7268 | || h->plt.offset == (bfd_vma) -1)) | |
dfc5f959 | 7269 | { |
bd97cb95 | 7270 | if (globals->use_blx && r_type == R_ARM_THM_CALL) |
39b41c9c PB |
7271 | { |
7272 | /* Convert BL to BLX. */ | |
7273 | lower_insn = (lower_insn & ~0x1000) | 0x0800; | |
7274 | } | |
155d87d7 CL |
7275 | else if (( r_type != R_ARM_THM_CALL) |
7276 | && (r_type != R_ARM_THM_JUMP24)) | |
8029a119 NC |
7277 | { |
7278 | if (elf32_thumb_to_arm_stub | |
7279 | (info, sym_name, input_bfd, output_bfd, input_section, | |
7280 | hit_data, sym_sec, rel->r_offset, signed_addend, value, | |
7281 | error_message)) | |
7282 | return bfd_reloc_ok; | |
7283 | else | |
7284 | return bfd_reloc_dangerous; | |
7285 | } | |
da5938a2 | 7286 | } |
bd97cb95 DJ |
7287 | else if (sym_flags == STT_ARM_TFUNC && globals->use_blx |
7288 | && r_type == R_ARM_THM_CALL) | |
39b41c9c PB |
7289 | { |
7290 | /* Make sure this is a BL. */ | |
7291 | lower_insn |= 0x1800; | |
7292 | } | |
252b5132 | 7293 | } |
f21f3fe0 | 7294 | |
b7693d02 DJ |
7295 | /* Handle calls via the PLT. */ |
7296 | if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1) | |
7297 | { | |
7298 | value = (splt->output_section->vma | |
7299 | + splt->output_offset | |
7300 | + h->plt.offset); | |
bd97cb95 | 7301 | if (globals->use_blx && r_type == R_ARM_THM_CALL) |
33bfe774 JB |
7302 | { |
7303 | /* If the Thumb BLX instruction is available, convert the | |
7304 | BL to a BLX instruction to call the ARM-mode PLT entry. */ | |
39b41c9c | 7305 | lower_insn = (lower_insn & ~0x1000) | 0x0800; |
33bfe774 JB |
7306 | } |
7307 | else | |
7308 | /* Target the Thumb stub before the ARM PLT entry. */ | |
7309 | value -= PLT_THUMB_STUB_SIZE; | |
0945cdfd | 7310 | *unresolved_reloc_p = FALSE; |
b7693d02 DJ |
7311 | } |
7312 | ||
155d87d7 | 7313 | if (r_type == R_ARM_THM_CALL || r_type == R_ARM_THM_JUMP24) |
906e58ca NC |
7314 | { |
7315 | /* Check if a stub has to be inserted because the destination | |
8029a119 | 7316 | is too far. */ |
906e58ca NC |
7317 | bfd_vma from; |
7318 | bfd_signed_vma branch_offset; | |
7319 | struct elf32_arm_stub_hash_entry *stub_entry = NULL; | |
7320 | ||
7321 | from = (input_section->output_section->vma | |
7322 | + input_section->output_offset | |
7323 | + rel->r_offset); | |
7324 | branch_offset = (bfd_signed_vma)(value - from); | |
7325 | ||
7326 | if ((!thumb2 | |
7327 | && (branch_offset > THM_MAX_FWD_BRANCH_OFFSET | |
7328 | || (branch_offset < THM_MAX_BWD_BRANCH_OFFSET))) | |
7329 | || | |
7330 | (thumb2 | |
7331 | && (branch_offset > THM2_MAX_FWD_BRANCH_OFFSET | |
f4ac8484 | 7332 | || (branch_offset < THM2_MAX_BWD_BRANCH_OFFSET))) |
155d87d7 CL |
7333 | || ((sym_flags != STT_ARM_TFUNC) |
7334 | && (((r_type == R_ARM_THM_CALL) && !globals->use_blx) | |
7335 | || r_type == R_ARM_THM_JUMP24))) | |
906e58ca NC |
7336 | { |
7337 | /* The target is out of reach or we are changing modes, so | |
7338 | redirect the branch to the local stub for this | |
7339 | function. */ | |
7340 | stub_entry = elf32_arm_get_stub_entry (input_section, | |
7341 | sym_sec, h, | |
7342 | rel, globals); | |
7343 | if (stub_entry != NULL) | |
7344 | value = (stub_entry->stub_offset | |
7345 | + stub_entry->stub_sec->output_offset | |
7346 | + stub_entry->stub_sec->output_section->vma); | |
7347 | ||
f4ac8484 | 7348 | /* If this call becomes a call to Arm, force BLX. */ |
155d87d7 | 7349 | if (globals->use_blx && (r_type == R_ARM_THM_CALL)) |
f4ac8484 DJ |
7350 | { |
7351 | if ((stub_entry | |
7352 | && !arm_stub_is_thumb (stub_entry->stub_type)) | |
7353 | || (sym_flags != STT_ARM_TFUNC)) | |
7354 | lower_insn = (lower_insn & ~0x1000) | 0x0800; | |
7355 | } | |
906e58ca NC |
7356 | } |
7357 | } | |
7358 | ||
ba96a88f | 7359 | relocation = value + signed_addend; |
f21f3fe0 | 7360 | |
252b5132 | 7361 | relocation -= (input_section->output_section->vma |
ba96a88f NC |
7362 | + input_section->output_offset |
7363 | + rel->r_offset); | |
9a5aca8c | 7364 | |
252b5132 RH |
7365 | check = relocation >> howto->rightshift; |
7366 | ||
7367 | /* If this is a signed value, the rightshift just dropped | |
7368 | leading 1 bits (assuming twos complement). */ | |
7369 | if ((bfd_signed_vma) relocation >= 0) | |
7370 | signed_check = check; | |
7371 | else | |
7372 | signed_check = check | ~((bfd_vma) -1 >> howto->rightshift); | |
7373 | ||
e95de063 MS |
7374 | /* Calculate the permissable maximum and minimum values for |
7375 | this relocation according to whether we're relocating for | |
7376 | Thumb-2 or not. */ | |
7377 | bitsize = howto->bitsize; | |
7378 | if (!thumb2) | |
7379 | bitsize -= 2; | |
7380 | reloc_signed_max = ((1 << (bitsize - 1)) - 1) >> howto->rightshift; | |
7381 | reloc_signed_min = ~reloc_signed_max; | |
7382 | ||
252b5132 | 7383 | /* Assumes two's complement. */ |
ba96a88f | 7384 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) |
b34976b6 | 7385 | overflow = TRUE; |
252b5132 | 7386 | |
bd97cb95 | 7387 | if ((lower_insn & 0x5000) == 0x4000) |
c62e1cc3 NC |
7388 | /* For a BLX instruction, make sure that the relocation is rounded up |
7389 | to a word boundary. This follows the semantics of the instruction | |
7390 | which specifies that bit 1 of the target address will come from bit | |
7391 | 1 of the base address. */ | |
7392 | relocation = (relocation + 2) & ~ 3; | |
cb1afa5c | 7393 | |
e95de063 MS |
7394 | /* Put RELOCATION back into the insn. Assumes two's complement. |
7395 | We use the Thumb-2 encoding, which is safe even if dealing with | |
7396 | a Thumb-1 instruction by virtue of our overflow check above. */ | |
7397 | reloc_sign = (signed_check < 0) ? 1 : 0; | |
7398 | upper_insn = (upper_insn & ~(bfd_vma) 0x7ff) | |
7399 | | ((relocation >> 12) & 0x3ff) | |
7400 | | (reloc_sign << 10); | |
906e58ca | 7401 | lower_insn = (lower_insn & ~(bfd_vma) 0x2fff) |
e95de063 MS |
7402 | | (((!((relocation >> 23) & 1)) ^ reloc_sign) << 13) |
7403 | | (((!((relocation >> 22) & 1)) ^ reloc_sign) << 11) | |
7404 | | ((relocation >> 1) & 0x7ff); | |
c62e1cc3 | 7405 | |
252b5132 RH |
7406 | /* Put the relocated value back in the object file: */ |
7407 | bfd_put_16 (input_bfd, upper_insn, hit_data); | |
7408 | bfd_put_16 (input_bfd, lower_insn, hit_data + 2); | |
7409 | ||
7410 | return (overflow ? bfd_reloc_overflow : bfd_reloc_ok); | |
7411 | } | |
7412 | break; | |
7413 | ||
c19d1205 ZW |
7414 | case R_ARM_THM_JUMP19: |
7415 | /* Thumb32 conditional branch instruction. */ | |
7416 | { | |
7417 | bfd_vma relocation; | |
7418 | bfd_boolean overflow = FALSE; | |
7419 | bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); | |
7420 | bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); | |
a00a1f35 MS |
7421 | bfd_signed_vma reloc_signed_max = 0xffffe; |
7422 | bfd_signed_vma reloc_signed_min = -0x100000; | |
c19d1205 ZW |
7423 | bfd_signed_vma signed_check; |
7424 | ||
7425 | /* Need to refetch the addend, reconstruct the top three bits, | |
7426 | and squish the two 11 bit pieces together. */ | |
7427 | if (globals->use_rel) | |
7428 | { | |
7429 | bfd_vma S = (upper_insn & 0x0400) >> 10; | |
a00a1f35 | 7430 | bfd_vma upper = (upper_insn & 0x003f); |
c19d1205 ZW |
7431 | bfd_vma J1 = (lower_insn & 0x2000) >> 13; |
7432 | bfd_vma J2 = (lower_insn & 0x0800) >> 11; | |
7433 | bfd_vma lower = (lower_insn & 0x07ff); | |
7434 | ||
a00a1f35 MS |
7435 | upper |= J1 << 6; |
7436 | upper |= J2 << 7; | |
7437 | upper |= (!S) << 8; | |
c19d1205 ZW |
7438 | upper -= 0x0100; /* Sign extend. */ |
7439 | ||
7440 | addend = (upper << 12) | (lower << 1); | |
7441 | signed_addend = addend; | |
7442 | } | |
7443 | ||
bd97cb95 DJ |
7444 | /* Handle calls via the PLT. */ |
7445 | if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1) | |
7446 | { | |
7447 | value = (splt->output_section->vma | |
7448 | + splt->output_offset | |
7449 | + h->plt.offset); | |
7450 | /* Target the Thumb stub before the ARM PLT entry. */ | |
7451 | value -= PLT_THUMB_STUB_SIZE; | |
7452 | *unresolved_reloc_p = FALSE; | |
7453 | } | |
7454 | ||
c19d1205 ZW |
7455 | /* ??? Should handle interworking? GCC might someday try to |
7456 | use this for tail calls. */ | |
7457 | ||
7458 | relocation = value + signed_addend; | |
7459 | relocation -= (input_section->output_section->vma | |
7460 | + input_section->output_offset | |
7461 | + rel->r_offset); | |
a00a1f35 | 7462 | signed_check = (bfd_signed_vma) relocation; |
c19d1205 | 7463 | |
c19d1205 ZW |
7464 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) |
7465 | overflow = TRUE; | |
7466 | ||
7467 | /* Put RELOCATION back into the insn. */ | |
7468 | { | |
7469 | bfd_vma S = (relocation & 0x00100000) >> 20; | |
7470 | bfd_vma J2 = (relocation & 0x00080000) >> 19; | |
7471 | bfd_vma J1 = (relocation & 0x00040000) >> 18; | |
7472 | bfd_vma hi = (relocation & 0x0003f000) >> 12; | |
7473 | bfd_vma lo = (relocation & 0x00000ffe) >> 1; | |
7474 | ||
a00a1f35 | 7475 | upper_insn = (upper_insn & 0xfbc0) | (S << 10) | hi; |
c19d1205 ZW |
7476 | lower_insn = (lower_insn & 0xd000) | (J1 << 13) | (J2 << 11) | lo; |
7477 | } | |
7478 | ||
7479 | /* Put the relocated value back in the object file: */ | |
7480 | bfd_put_16 (input_bfd, upper_insn, hit_data); | |
7481 | bfd_put_16 (input_bfd, lower_insn, hit_data + 2); | |
7482 | ||
7483 | return (overflow ? bfd_reloc_overflow : bfd_reloc_ok); | |
7484 | } | |
7485 | ||
7486 | case R_ARM_THM_JUMP11: | |
7487 | case R_ARM_THM_JUMP8: | |
7488 | case R_ARM_THM_JUMP6: | |
51c5503b NC |
7489 | /* Thumb B (branch) instruction). */ |
7490 | { | |
6cf9e9fe | 7491 | bfd_signed_vma relocation; |
51c5503b NC |
7492 | bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1; |
7493 | bfd_signed_vma reloc_signed_min = ~ reloc_signed_max; | |
51c5503b NC |
7494 | bfd_signed_vma signed_check; |
7495 | ||
c19d1205 ZW |
7496 | /* CZB cannot jump backward. */ |
7497 | if (r_type == R_ARM_THM_JUMP6) | |
7498 | reloc_signed_min = 0; | |
7499 | ||
4e7fd91e | 7500 | if (globals->use_rel) |
6cf9e9fe | 7501 | { |
4e7fd91e PB |
7502 | /* Need to refetch addend. */ |
7503 | addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask; | |
7504 | if (addend & ((howto->src_mask + 1) >> 1)) | |
7505 | { | |
7506 | signed_addend = -1; | |
7507 | signed_addend &= ~ howto->src_mask; | |
7508 | signed_addend |= addend; | |
7509 | } | |
7510 | else | |
7511 | signed_addend = addend; | |
7512 | /* The value in the insn has been right shifted. We need to | |
7513 | undo this, so that we can perform the address calculation | |
7514 | in terms of bytes. */ | |
7515 | signed_addend <<= howto->rightshift; | |
6cf9e9fe | 7516 | } |
6cf9e9fe | 7517 | relocation = value + signed_addend; |
51c5503b NC |
7518 | |
7519 | relocation -= (input_section->output_section->vma | |
7520 | + input_section->output_offset | |
7521 | + rel->r_offset); | |
7522 | ||
6cf9e9fe NC |
7523 | relocation >>= howto->rightshift; |
7524 | signed_check = relocation; | |
c19d1205 ZW |
7525 | |
7526 | if (r_type == R_ARM_THM_JUMP6) | |
7527 | relocation = ((relocation & 0x0020) << 4) | ((relocation & 0x001f) << 3); | |
7528 | else | |
7529 | relocation &= howto->dst_mask; | |
51c5503b | 7530 | relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask)); |
cedb70c5 | 7531 | |
51c5503b NC |
7532 | bfd_put_16 (input_bfd, relocation, hit_data); |
7533 | ||
7534 | /* Assumes two's complement. */ | |
7535 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) | |
7536 | return bfd_reloc_overflow; | |
7537 | ||
7538 | return bfd_reloc_ok; | |
7539 | } | |
cedb70c5 | 7540 | |
8375c36b PB |
7541 | case R_ARM_ALU_PCREL7_0: |
7542 | case R_ARM_ALU_PCREL15_8: | |
7543 | case R_ARM_ALU_PCREL23_15: | |
7544 | { | |
7545 | bfd_vma insn; | |
7546 | bfd_vma relocation; | |
7547 | ||
7548 | insn = bfd_get_32 (input_bfd, hit_data); | |
4e7fd91e PB |
7549 | if (globals->use_rel) |
7550 | { | |
7551 | /* Extract the addend. */ | |
7552 | addend = (insn & 0xff) << ((insn & 0xf00) >> 7); | |
7553 | signed_addend = addend; | |
7554 | } | |
8375c36b PB |
7555 | relocation = value + signed_addend; |
7556 | ||
7557 | relocation -= (input_section->output_section->vma | |
7558 | + input_section->output_offset | |
7559 | + rel->r_offset); | |
7560 | insn = (insn & ~0xfff) | |
7561 | | ((howto->bitpos << 7) & 0xf00) | |
7562 | | ((relocation >> howto->bitpos) & 0xff); | |
7563 | bfd_put_32 (input_bfd, value, hit_data); | |
7564 | } | |
7565 | return bfd_reloc_ok; | |
7566 | ||
252b5132 RH |
7567 | case R_ARM_GNU_VTINHERIT: |
7568 | case R_ARM_GNU_VTENTRY: | |
7569 | return bfd_reloc_ok; | |
7570 | ||
c19d1205 | 7571 | case R_ARM_GOTOFF32: |
252b5132 RH |
7572 | /* Relocation is relative to the start of the |
7573 | global offset table. */ | |
7574 | ||
7575 | BFD_ASSERT (sgot != NULL); | |
7576 | if (sgot == NULL) | |
7577 | return bfd_reloc_notsupported; | |
9a5aca8c | 7578 | |
cedb70c5 | 7579 | /* If we are addressing a Thumb function, we need to adjust the |
ee29b9fb RE |
7580 | address by one, so that attempts to call the function pointer will |
7581 | correctly interpret it as Thumb code. */ | |
7582 | if (sym_flags == STT_ARM_TFUNC) | |
7583 | value += 1; | |
7584 | ||
252b5132 RH |
7585 | /* Note that sgot->output_offset is not involved in this |
7586 | calculation. We always want the start of .got. If we | |
7587 | define _GLOBAL_OFFSET_TABLE in a different way, as is | |
7588 | permitted by the ABI, we might have to change this | |
9b485d32 | 7589 | calculation. */ |
252b5132 | 7590 | value -= sgot->output_section->vma; |
f21f3fe0 | 7591 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 | 7592 | contents, rel->r_offset, value, |
00a97672 | 7593 | rel->r_addend); |
252b5132 RH |
7594 | |
7595 | case R_ARM_GOTPC: | |
a7c10850 | 7596 | /* Use global offset table as symbol value. */ |
252b5132 | 7597 | BFD_ASSERT (sgot != NULL); |
f21f3fe0 | 7598 | |
252b5132 RH |
7599 | if (sgot == NULL) |
7600 | return bfd_reloc_notsupported; | |
7601 | ||
0945cdfd | 7602 | *unresolved_reloc_p = FALSE; |
252b5132 | 7603 | value = sgot->output_section->vma; |
f21f3fe0 | 7604 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 | 7605 | contents, rel->r_offset, value, |
00a97672 | 7606 | rel->r_addend); |
f21f3fe0 | 7607 | |
252b5132 | 7608 | case R_ARM_GOT32: |
eb043451 | 7609 | case R_ARM_GOT_PREL: |
252b5132 | 7610 | /* Relocation is to the entry for this symbol in the |
9b485d32 | 7611 | global offset table. */ |
252b5132 RH |
7612 | if (sgot == NULL) |
7613 | return bfd_reloc_notsupported; | |
f21f3fe0 | 7614 | |
252b5132 RH |
7615 | if (h != NULL) |
7616 | { | |
7617 | bfd_vma off; | |
5e681ec4 | 7618 | bfd_boolean dyn; |
f21f3fe0 | 7619 | |
252b5132 RH |
7620 | off = h->got.offset; |
7621 | BFD_ASSERT (off != (bfd_vma) -1); | |
5e681ec4 | 7622 | dyn = globals->root.dynamic_sections_created; |
f21f3fe0 | 7623 | |
5e681ec4 | 7624 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
50d6c878 | 7625 | || (info->shared |
5e681ec4 PB |
7626 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
7627 | || (ELF_ST_VISIBILITY (h->other) | |
7628 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
7629 | { |
7630 | /* This is actually a static link, or it is a -Bsymbolic link | |
7631 | and the symbol is defined locally. We must initialize this | |
7632 | entry in the global offset table. Since the offset must | |
7633 | always be a multiple of 4, we use the least significant bit | |
7634 | to record whether we have initialized it already. | |
f21f3fe0 | 7635 | |
00a97672 | 7636 | When doing a dynamic link, we create a .rel(a).got relocation |
f21f3fe0 | 7637 | entry to initialize the value. This is done in the |
9b485d32 | 7638 | finish_dynamic_symbol routine. */ |
252b5132 RH |
7639 | if ((off & 1) != 0) |
7640 | off &= ~1; | |
7641 | else | |
7642 | { | |
ee29b9fb RE |
7643 | /* If we are addressing a Thumb function, we need to |
7644 | adjust the address by one, so that attempts to | |
7645 | call the function pointer will correctly | |
7646 | interpret it as Thumb code. */ | |
7647 | if (sym_flags == STT_ARM_TFUNC) | |
7648 | value |= 1; | |
7649 | ||
252b5132 RH |
7650 | bfd_put_32 (output_bfd, value, sgot->contents + off); |
7651 | h->got.offset |= 1; | |
7652 | } | |
7653 | } | |
0945cdfd DJ |
7654 | else |
7655 | *unresolved_reloc_p = FALSE; | |
f21f3fe0 | 7656 | |
252b5132 RH |
7657 | value = sgot->output_offset + off; |
7658 | } | |
7659 | else | |
7660 | { | |
7661 | bfd_vma off; | |
f21f3fe0 | 7662 | |
252b5132 RH |
7663 | BFD_ASSERT (local_got_offsets != NULL && |
7664 | local_got_offsets[r_symndx] != (bfd_vma) -1); | |
f21f3fe0 | 7665 | |
252b5132 | 7666 | off = local_got_offsets[r_symndx]; |
f21f3fe0 | 7667 | |
252b5132 RH |
7668 | /* The offset must always be a multiple of 4. We use the |
7669 | least significant bit to record whether we have already | |
9b485d32 | 7670 | generated the necessary reloc. */ |
252b5132 RH |
7671 | if ((off & 1) != 0) |
7672 | off &= ~1; | |
7673 | else | |
7674 | { | |
b7693d02 DJ |
7675 | /* If we are addressing a Thumb function, we need to |
7676 | adjust the address by one, so that attempts to | |
7677 | call the function pointer will correctly | |
7678 | interpret it as Thumb code. */ | |
7679 | if (sym_flags == STT_ARM_TFUNC) | |
7680 | value |= 1; | |
7681 | ||
00a97672 RS |
7682 | if (globals->use_rel) |
7683 | bfd_put_32 (output_bfd, value, sgot->contents + off); | |
f21f3fe0 | 7684 | |
252b5132 RH |
7685 | if (info->shared) |
7686 | { | |
7687 | asection * srelgot; | |
947216bf AM |
7688 | Elf_Internal_Rela outrel; |
7689 | bfd_byte *loc; | |
f21f3fe0 | 7690 | |
00a97672 RS |
7691 | srelgot = (bfd_get_section_by_name |
7692 | (dynobj, RELOC_SECTION (globals, ".got"))); | |
252b5132 | 7693 | BFD_ASSERT (srelgot != NULL); |
f21f3fe0 | 7694 | |
00a97672 | 7695 | outrel.r_addend = addend + value; |
252b5132 | 7696 | outrel.r_offset = (sgot->output_section->vma |
f21f3fe0 | 7697 | + sgot->output_offset |
252b5132 RH |
7698 | + off); |
7699 | outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); | |
947216bf | 7700 | loc = srelgot->contents; |
00a97672 RS |
7701 | loc += srelgot->reloc_count++ * RELOC_SIZE (globals); |
7702 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
252b5132 | 7703 | } |
f21f3fe0 | 7704 | |
252b5132 RH |
7705 | local_got_offsets[r_symndx] |= 1; |
7706 | } | |
f21f3fe0 | 7707 | |
252b5132 RH |
7708 | value = sgot->output_offset + off; |
7709 | } | |
eb043451 PB |
7710 | if (r_type != R_ARM_GOT32) |
7711 | value += sgot->output_section->vma; | |
9a5aca8c | 7712 | |
f21f3fe0 | 7713 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 | 7714 | contents, rel->r_offset, value, |
00a97672 | 7715 | rel->r_addend); |
f21f3fe0 | 7716 | |
ba93b8ac DJ |
7717 | case R_ARM_TLS_LDO32: |
7718 | value = value - dtpoff_base (info); | |
7719 | ||
7720 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
00a97672 RS |
7721 | contents, rel->r_offset, value, |
7722 | rel->r_addend); | |
ba93b8ac DJ |
7723 | |
7724 | case R_ARM_TLS_LDM32: | |
7725 | { | |
7726 | bfd_vma off; | |
7727 | ||
7728 | if (globals->sgot == NULL) | |
7729 | abort (); | |
7730 | ||
7731 | off = globals->tls_ldm_got.offset; | |
7732 | ||
7733 | if ((off & 1) != 0) | |
7734 | off &= ~1; | |
7735 | else | |
7736 | { | |
7737 | /* If we don't know the module number, create a relocation | |
7738 | for it. */ | |
7739 | if (info->shared) | |
7740 | { | |
7741 | Elf_Internal_Rela outrel; | |
7742 | bfd_byte *loc; | |
7743 | ||
7744 | if (globals->srelgot == NULL) | |
7745 | abort (); | |
7746 | ||
00a97672 | 7747 | outrel.r_addend = 0; |
ba93b8ac DJ |
7748 | outrel.r_offset = (globals->sgot->output_section->vma |
7749 | + globals->sgot->output_offset + off); | |
7750 | outrel.r_info = ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32); | |
7751 | ||
00a97672 RS |
7752 | if (globals->use_rel) |
7753 | bfd_put_32 (output_bfd, outrel.r_addend, | |
7754 | globals->sgot->contents + off); | |
ba93b8ac DJ |
7755 | |
7756 | loc = globals->srelgot->contents; | |
00a97672 RS |
7757 | loc += globals->srelgot->reloc_count++ * RELOC_SIZE (globals); |
7758 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
ba93b8ac DJ |
7759 | } |
7760 | else | |
7761 | bfd_put_32 (output_bfd, 1, globals->sgot->contents + off); | |
7762 | ||
7763 | globals->tls_ldm_got.offset |= 1; | |
7764 | } | |
7765 | ||
906e58ca | 7766 | value = globals->sgot->output_section->vma + globals->sgot->output_offset + off |
ba93b8ac DJ |
7767 | - (input_section->output_section->vma + input_section->output_offset + rel->r_offset); |
7768 | ||
7769 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
7770 | contents, rel->r_offset, value, | |
00a97672 | 7771 | rel->r_addend); |
ba93b8ac DJ |
7772 | } |
7773 | ||
7774 | case R_ARM_TLS_GD32: | |
7775 | case R_ARM_TLS_IE32: | |
7776 | { | |
7777 | bfd_vma off; | |
7778 | int indx; | |
7779 | char tls_type; | |
7780 | ||
7781 | if (globals->sgot == NULL) | |
7782 | abort (); | |
7783 | ||
7784 | indx = 0; | |
7785 | if (h != NULL) | |
7786 | { | |
7787 | bfd_boolean dyn; | |
7788 | dyn = globals->root.dynamic_sections_created; | |
7789 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
7790 | && (!info->shared | |
7791 | || !SYMBOL_REFERENCES_LOCAL (info, h))) | |
7792 | { | |
7793 | *unresolved_reloc_p = FALSE; | |
7794 | indx = h->dynindx; | |
7795 | } | |
7796 | off = h->got.offset; | |
7797 | tls_type = ((struct elf32_arm_link_hash_entry *) h)->tls_type; | |
7798 | } | |
7799 | else | |
7800 | { | |
7801 | if (local_got_offsets == NULL) | |
7802 | abort (); | |
7803 | off = local_got_offsets[r_symndx]; | |
7804 | tls_type = elf32_arm_local_got_tls_type (input_bfd)[r_symndx]; | |
7805 | } | |
7806 | ||
7807 | if (tls_type == GOT_UNKNOWN) | |
7808 | abort (); | |
7809 | ||
7810 | if ((off & 1) != 0) | |
7811 | off &= ~1; | |
7812 | else | |
7813 | { | |
7814 | bfd_boolean need_relocs = FALSE; | |
7815 | Elf_Internal_Rela outrel; | |
7816 | bfd_byte *loc = NULL; | |
7817 | int cur_off = off; | |
7818 | ||
7819 | /* The GOT entries have not been initialized yet. Do it | |
7820 | now, and emit any relocations. If both an IE GOT and a | |
7821 | GD GOT are necessary, we emit the GD first. */ | |
7822 | ||
7823 | if ((info->shared || indx != 0) | |
7824 | && (h == NULL | |
7825 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7826 | || h->root.type != bfd_link_hash_undefweak)) | |
7827 | { | |
7828 | need_relocs = TRUE; | |
7829 | if (globals->srelgot == NULL) | |
7830 | abort (); | |
7831 | loc = globals->srelgot->contents; | |
00a97672 | 7832 | loc += globals->srelgot->reloc_count * RELOC_SIZE (globals); |
ba93b8ac DJ |
7833 | } |
7834 | ||
7835 | if (tls_type & GOT_TLS_GD) | |
7836 | { | |
7837 | if (need_relocs) | |
7838 | { | |
00a97672 | 7839 | outrel.r_addend = 0; |
ba93b8ac | 7840 | outrel.r_offset = (globals->sgot->output_section->vma |
00a97672 RS |
7841 | + globals->sgot->output_offset |
7842 | + cur_off); | |
ba93b8ac | 7843 | outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DTPMOD32); |
ba93b8ac | 7844 | |
00a97672 RS |
7845 | if (globals->use_rel) |
7846 | bfd_put_32 (output_bfd, outrel.r_addend, | |
7847 | globals->sgot->contents + cur_off); | |
7848 | ||
7849 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
ba93b8ac | 7850 | globals->srelgot->reloc_count++; |
00a97672 | 7851 | loc += RELOC_SIZE (globals); |
ba93b8ac DJ |
7852 | |
7853 | if (indx == 0) | |
7854 | bfd_put_32 (output_bfd, value - dtpoff_base (info), | |
7855 | globals->sgot->contents + cur_off + 4); | |
7856 | else | |
7857 | { | |
00a97672 | 7858 | outrel.r_addend = 0; |
ba93b8ac DJ |
7859 | outrel.r_info = ELF32_R_INFO (indx, |
7860 | R_ARM_TLS_DTPOFF32); | |
7861 | outrel.r_offset += 4; | |
00a97672 RS |
7862 | |
7863 | if (globals->use_rel) | |
7864 | bfd_put_32 (output_bfd, outrel.r_addend, | |
7865 | globals->sgot->contents + cur_off + 4); | |
7866 | ||
7867 | ||
7868 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
ba93b8ac | 7869 | globals->srelgot->reloc_count++; |
00a97672 | 7870 | loc += RELOC_SIZE (globals); |
ba93b8ac DJ |
7871 | } |
7872 | } | |
7873 | else | |
7874 | { | |
7875 | /* If we are not emitting relocations for a | |
7876 | general dynamic reference, then we must be in a | |
7877 | static link or an executable link with the | |
7878 | symbol binding locally. Mark it as belonging | |
7879 | to module 1, the executable. */ | |
7880 | bfd_put_32 (output_bfd, 1, | |
7881 | globals->sgot->contents + cur_off); | |
7882 | bfd_put_32 (output_bfd, value - dtpoff_base (info), | |
7883 | globals->sgot->contents + cur_off + 4); | |
7884 | } | |
7885 | ||
7886 | cur_off += 8; | |
7887 | } | |
7888 | ||
7889 | if (tls_type & GOT_TLS_IE) | |
7890 | { | |
7891 | if (need_relocs) | |
7892 | { | |
00a97672 RS |
7893 | if (indx == 0) |
7894 | outrel.r_addend = value - dtpoff_base (info); | |
7895 | else | |
7896 | outrel.r_addend = 0; | |
ba93b8ac DJ |
7897 | outrel.r_offset = (globals->sgot->output_section->vma |
7898 | + globals->sgot->output_offset | |
7899 | + cur_off); | |
7900 | outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_TPOFF32); | |
7901 | ||
00a97672 RS |
7902 | if (globals->use_rel) |
7903 | bfd_put_32 (output_bfd, outrel.r_addend, | |
ba93b8ac DJ |
7904 | globals->sgot->contents + cur_off); |
7905 | ||
00a97672 | 7906 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); |
ba93b8ac | 7907 | globals->srelgot->reloc_count++; |
00a97672 | 7908 | loc += RELOC_SIZE (globals); |
ba93b8ac DJ |
7909 | } |
7910 | else | |
7911 | bfd_put_32 (output_bfd, tpoff (info, value), | |
7912 | globals->sgot->contents + cur_off); | |
7913 | cur_off += 4; | |
7914 | } | |
7915 | ||
7916 | if (h != NULL) | |
7917 | h->got.offset |= 1; | |
7918 | else | |
7919 | local_got_offsets[r_symndx] |= 1; | |
7920 | } | |
7921 | ||
7922 | if ((tls_type & GOT_TLS_GD) && r_type != R_ARM_TLS_GD32) | |
7923 | off += 8; | |
906e58ca | 7924 | value = globals->sgot->output_section->vma + globals->sgot->output_offset + off |
ba93b8ac DJ |
7925 | - (input_section->output_section->vma + input_section->output_offset + rel->r_offset); |
7926 | ||
7927 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
7928 | contents, rel->r_offset, value, | |
00a97672 | 7929 | rel->r_addend); |
ba93b8ac DJ |
7930 | } |
7931 | ||
7932 | case R_ARM_TLS_LE32: | |
7933 | if (info->shared) | |
7934 | { | |
7935 | (*_bfd_error_handler) | |
7936 | (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"), | |
7937 | input_bfd, input_section, | |
7938 | (long) rel->r_offset, howto->name); | |
906e58ca | 7939 | return FALSE; |
ba93b8ac DJ |
7940 | } |
7941 | else | |
7942 | value = tpoff (info, value); | |
906e58ca | 7943 | |
ba93b8ac | 7944 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
00a97672 RS |
7945 | contents, rel->r_offset, value, |
7946 | rel->r_addend); | |
ba93b8ac | 7947 | |
319850b4 JB |
7948 | case R_ARM_V4BX: |
7949 | if (globals->fix_v4bx) | |
845b51d6 PB |
7950 | { |
7951 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
319850b4 | 7952 | |
845b51d6 PB |
7953 | /* Ensure that we have a BX instruction. */ |
7954 | BFD_ASSERT ((insn & 0x0ffffff0) == 0x012fff10); | |
319850b4 | 7955 | |
845b51d6 PB |
7956 | if (globals->fix_v4bx == 2 && (insn & 0xf) != 0xf) |
7957 | { | |
7958 | /* Branch to veneer. */ | |
7959 | bfd_vma glue_addr; | |
7960 | glue_addr = elf32_arm_bx_glue (info, insn & 0xf); | |
7961 | glue_addr -= input_section->output_section->vma | |
7962 | + input_section->output_offset | |
7963 | + rel->r_offset + 8; | |
7964 | insn = (insn & 0xf0000000) | 0x0a000000 | |
7965 | | ((glue_addr >> 2) & 0x00ffffff); | |
7966 | } | |
7967 | else | |
7968 | { | |
7969 | /* Preserve Rm (lowest four bits) and the condition code | |
7970 | (highest four bits). Other bits encode MOV PC,Rm. */ | |
7971 | insn = (insn & 0xf000000f) | 0x01a0f000; | |
7972 | } | |
319850b4 | 7973 | |
845b51d6 PB |
7974 | bfd_put_32 (input_bfd, insn, hit_data); |
7975 | } | |
319850b4 JB |
7976 | return bfd_reloc_ok; |
7977 | ||
b6895b4f PB |
7978 | case R_ARM_MOVW_ABS_NC: |
7979 | case R_ARM_MOVT_ABS: | |
7980 | case R_ARM_MOVW_PREL_NC: | |
7981 | case R_ARM_MOVT_PREL: | |
92f5d02b MS |
7982 | /* Until we properly support segment-base-relative addressing then |
7983 | we assume the segment base to be zero, as for the group relocations. | |
7984 | Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC | |
7985 | and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS. */ | |
7986 | case R_ARM_MOVW_BREL_NC: | |
7987 | case R_ARM_MOVW_BREL: | |
7988 | case R_ARM_MOVT_BREL: | |
b6895b4f PB |
7989 | { |
7990 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
7991 | ||
7992 | if (globals->use_rel) | |
7993 | { | |
7994 | addend = ((insn >> 4) & 0xf000) | (insn & 0xfff); | |
39623e12 | 7995 | signed_addend = (addend ^ 0x8000) - 0x8000; |
b6895b4f | 7996 | } |
92f5d02b | 7997 | |
b6895b4f | 7998 | value += signed_addend; |
b6895b4f PB |
7999 | |
8000 | if (r_type == R_ARM_MOVW_PREL_NC || r_type == R_ARM_MOVT_PREL) | |
8001 | value -= (input_section->output_section->vma | |
8002 | + input_section->output_offset + rel->r_offset); | |
8003 | ||
92f5d02b MS |
8004 | if (r_type == R_ARM_MOVW_BREL && value >= 0x10000) |
8005 | return bfd_reloc_overflow; | |
8006 | ||
8007 | if (sym_flags == STT_ARM_TFUNC) | |
8008 | value |= 1; | |
8009 | ||
8010 | if (r_type == R_ARM_MOVT_ABS || r_type == R_ARM_MOVT_PREL | |
8011 | || r_type == R_ARM_MOVT_BREL) | |
b6895b4f PB |
8012 | value >>= 16; |
8013 | ||
8014 | insn &= 0xfff0f000; | |
8015 | insn |= value & 0xfff; | |
8016 | insn |= (value & 0xf000) << 4; | |
8017 | bfd_put_32 (input_bfd, insn, hit_data); | |
8018 | } | |
8019 | return bfd_reloc_ok; | |
8020 | ||
8021 | case R_ARM_THM_MOVW_ABS_NC: | |
8022 | case R_ARM_THM_MOVT_ABS: | |
8023 | case R_ARM_THM_MOVW_PREL_NC: | |
8024 | case R_ARM_THM_MOVT_PREL: | |
92f5d02b MS |
8025 | /* Until we properly support segment-base-relative addressing then |
8026 | we assume the segment base to be zero, as for the above relocations. | |
8027 | Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as | |
8028 | R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics | |
8029 | as R_ARM_THM_MOVT_ABS. */ | |
8030 | case R_ARM_THM_MOVW_BREL_NC: | |
8031 | case R_ARM_THM_MOVW_BREL: | |
8032 | case R_ARM_THM_MOVT_BREL: | |
b6895b4f PB |
8033 | { |
8034 | bfd_vma insn; | |
906e58ca | 8035 | |
b6895b4f PB |
8036 | insn = bfd_get_16 (input_bfd, hit_data) << 16; |
8037 | insn |= bfd_get_16 (input_bfd, hit_data + 2); | |
8038 | ||
8039 | if (globals->use_rel) | |
8040 | { | |
8041 | addend = ((insn >> 4) & 0xf000) | |
8042 | | ((insn >> 15) & 0x0800) | |
8043 | | ((insn >> 4) & 0x0700) | |
8044 | | (insn & 0x00ff); | |
39623e12 | 8045 | signed_addend = (addend ^ 0x8000) - 0x8000; |
b6895b4f | 8046 | } |
92f5d02b | 8047 | |
b6895b4f | 8048 | value += signed_addend; |
b6895b4f PB |
8049 | |
8050 | if (r_type == R_ARM_THM_MOVW_PREL_NC || r_type == R_ARM_THM_MOVT_PREL) | |
8051 | value -= (input_section->output_section->vma | |
8052 | + input_section->output_offset + rel->r_offset); | |
8053 | ||
92f5d02b MS |
8054 | if (r_type == R_ARM_THM_MOVW_BREL && value >= 0x10000) |
8055 | return bfd_reloc_overflow; | |
8056 | ||
8057 | if (sym_flags == STT_ARM_TFUNC) | |
8058 | value |= 1; | |
8059 | ||
8060 | if (r_type == R_ARM_THM_MOVT_ABS || r_type == R_ARM_THM_MOVT_PREL | |
8061 | || r_type == R_ARM_THM_MOVT_BREL) | |
b6895b4f PB |
8062 | value >>= 16; |
8063 | ||
8064 | insn &= 0xfbf08f00; | |
8065 | insn |= (value & 0xf000) << 4; | |
8066 | insn |= (value & 0x0800) << 15; | |
8067 | insn |= (value & 0x0700) << 4; | |
8068 | insn |= (value & 0x00ff); | |
8069 | ||
8070 | bfd_put_16 (input_bfd, insn >> 16, hit_data); | |
8071 | bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2); | |
8072 | } | |
8073 | return bfd_reloc_ok; | |
8074 | ||
4962c51a MS |
8075 | case R_ARM_ALU_PC_G0_NC: |
8076 | case R_ARM_ALU_PC_G1_NC: | |
8077 | case R_ARM_ALU_PC_G0: | |
8078 | case R_ARM_ALU_PC_G1: | |
8079 | case R_ARM_ALU_PC_G2: | |
8080 | case R_ARM_ALU_SB_G0_NC: | |
8081 | case R_ARM_ALU_SB_G1_NC: | |
8082 | case R_ARM_ALU_SB_G0: | |
8083 | case R_ARM_ALU_SB_G1: | |
8084 | case R_ARM_ALU_SB_G2: | |
8085 | { | |
8086 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
8087 | bfd_vma pc = input_section->output_section->vma | |
8088 | + input_section->output_offset + rel->r_offset; | |
8089 | /* sb should be the origin of the *segment* containing the symbol. | |
8090 | It is not clear how to obtain this OS-dependent value, so we | |
8091 | make an arbitrary choice of zero. */ | |
8092 | bfd_vma sb = 0; | |
8093 | bfd_vma residual; | |
8094 | bfd_vma g_n; | |
8095 | bfd_signed_vma signed_value; | |
8096 | int group = 0; | |
8097 | ||
8098 | /* Determine which group of bits to select. */ | |
8099 | switch (r_type) | |
8100 | { | |
8101 | case R_ARM_ALU_PC_G0_NC: | |
8102 | case R_ARM_ALU_PC_G0: | |
8103 | case R_ARM_ALU_SB_G0_NC: | |
8104 | case R_ARM_ALU_SB_G0: | |
8105 | group = 0; | |
8106 | break; | |
8107 | ||
8108 | case R_ARM_ALU_PC_G1_NC: | |
8109 | case R_ARM_ALU_PC_G1: | |
8110 | case R_ARM_ALU_SB_G1_NC: | |
8111 | case R_ARM_ALU_SB_G1: | |
8112 | group = 1; | |
8113 | break; | |
8114 | ||
8115 | case R_ARM_ALU_PC_G2: | |
8116 | case R_ARM_ALU_SB_G2: | |
8117 | group = 2; | |
8118 | break; | |
8119 | ||
8120 | default: | |
906e58ca | 8121 | abort (); |
4962c51a MS |
8122 | } |
8123 | ||
8124 | /* If REL, extract the addend from the insn. If RELA, it will | |
8125 | have already been fetched for us. */ | |
8126 | if (globals->use_rel) | |
8127 | { | |
8128 | int negative; | |
8129 | bfd_vma constant = insn & 0xff; | |
8130 | bfd_vma rotation = (insn & 0xf00) >> 8; | |
8131 | ||
8132 | if (rotation == 0) | |
8133 | signed_addend = constant; | |
8134 | else | |
8135 | { | |
8136 | /* Compensate for the fact that in the instruction, the | |
8137 | rotation is stored in multiples of 2 bits. */ | |
8138 | rotation *= 2; | |
8139 | ||
8140 | /* Rotate "constant" right by "rotation" bits. */ | |
8141 | signed_addend = (constant >> rotation) | | |
8142 | (constant << (8 * sizeof (bfd_vma) - rotation)); | |
8143 | } | |
8144 | ||
8145 | /* Determine if the instruction is an ADD or a SUB. | |
8146 | (For REL, this determines the sign of the addend.) */ | |
8147 | negative = identify_add_or_sub (insn); | |
8148 | if (negative == 0) | |
8149 | { | |
8150 | (*_bfd_error_handler) | |
8151 | (_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"), | |
8152 | input_bfd, input_section, | |
8153 | (long) rel->r_offset, howto->name); | |
906e58ca | 8154 | return bfd_reloc_overflow; |
4962c51a MS |
8155 | } |
8156 | ||
8157 | signed_addend *= negative; | |
8158 | } | |
8159 | ||
8160 | /* Compute the value (X) to go in the place. */ | |
8161 | if (r_type == R_ARM_ALU_PC_G0_NC | |
8162 | || r_type == R_ARM_ALU_PC_G1_NC | |
8163 | || r_type == R_ARM_ALU_PC_G0 | |
8164 | || r_type == R_ARM_ALU_PC_G1 | |
8165 | || r_type == R_ARM_ALU_PC_G2) | |
8166 | /* PC relative. */ | |
8167 | signed_value = value - pc + signed_addend; | |
8168 | else | |
8169 | /* Section base relative. */ | |
8170 | signed_value = value - sb + signed_addend; | |
8171 | ||
8172 | /* If the target symbol is a Thumb function, then set the | |
8173 | Thumb bit in the address. */ | |
8174 | if (sym_flags == STT_ARM_TFUNC) | |
8175 | signed_value |= 1; | |
8176 | ||
8177 | /* Calculate the value of the relevant G_n, in encoded | |
8178 | constant-with-rotation format. */ | |
8179 | g_n = calculate_group_reloc_mask (abs (signed_value), group, | |
8180 | &residual); | |
8181 | ||
8182 | /* Check for overflow if required. */ | |
8183 | if ((r_type == R_ARM_ALU_PC_G0 | |
8184 | || r_type == R_ARM_ALU_PC_G1 | |
8185 | || r_type == R_ARM_ALU_PC_G2 | |
8186 | || r_type == R_ARM_ALU_SB_G0 | |
8187 | || r_type == R_ARM_ALU_SB_G1 | |
8188 | || r_type == R_ARM_ALU_SB_G2) && residual != 0) | |
8189 | { | |
8190 | (*_bfd_error_handler) | |
8191 | (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"), | |
8192 | input_bfd, input_section, | |
8193 | (long) rel->r_offset, abs (signed_value), howto->name); | |
8194 | return bfd_reloc_overflow; | |
8195 | } | |
8196 | ||
8197 | /* Mask out the value and the ADD/SUB part of the opcode; take care | |
8198 | not to destroy the S bit. */ | |
8199 | insn &= 0xff1ff000; | |
8200 | ||
8201 | /* Set the opcode according to whether the value to go in the | |
8202 | place is negative. */ | |
8203 | if (signed_value < 0) | |
8204 | insn |= 1 << 22; | |
8205 | else | |
8206 | insn |= 1 << 23; | |
8207 | ||
8208 | /* Encode the offset. */ | |
8209 | insn |= g_n; | |
8210 | ||
8211 | bfd_put_32 (input_bfd, insn, hit_data); | |
8212 | } | |
8213 | return bfd_reloc_ok; | |
8214 | ||
8215 | case R_ARM_LDR_PC_G0: | |
8216 | case R_ARM_LDR_PC_G1: | |
8217 | case R_ARM_LDR_PC_G2: | |
8218 | case R_ARM_LDR_SB_G0: | |
8219 | case R_ARM_LDR_SB_G1: | |
8220 | case R_ARM_LDR_SB_G2: | |
8221 | { | |
8222 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
8223 | bfd_vma pc = input_section->output_section->vma | |
8224 | + input_section->output_offset + rel->r_offset; | |
8225 | bfd_vma sb = 0; /* See note above. */ | |
8226 | bfd_vma residual; | |
8227 | bfd_signed_vma signed_value; | |
8228 | int group = 0; | |
8229 | ||
8230 | /* Determine which groups of bits to calculate. */ | |
8231 | switch (r_type) | |
8232 | { | |
8233 | case R_ARM_LDR_PC_G0: | |
8234 | case R_ARM_LDR_SB_G0: | |
8235 | group = 0; | |
8236 | break; | |
8237 | ||
8238 | case R_ARM_LDR_PC_G1: | |
8239 | case R_ARM_LDR_SB_G1: | |
8240 | group = 1; | |
8241 | break; | |
8242 | ||
8243 | case R_ARM_LDR_PC_G2: | |
8244 | case R_ARM_LDR_SB_G2: | |
8245 | group = 2; | |
8246 | break; | |
8247 | ||
8248 | default: | |
906e58ca | 8249 | abort (); |
4962c51a MS |
8250 | } |
8251 | ||
8252 | /* If REL, extract the addend from the insn. If RELA, it will | |
8253 | have already been fetched for us. */ | |
8254 | if (globals->use_rel) | |
8255 | { | |
8256 | int negative = (insn & (1 << 23)) ? 1 : -1; | |
8257 | signed_addend = negative * (insn & 0xfff); | |
8258 | } | |
8259 | ||
8260 | /* Compute the value (X) to go in the place. */ | |
8261 | if (r_type == R_ARM_LDR_PC_G0 | |
8262 | || r_type == R_ARM_LDR_PC_G1 | |
8263 | || r_type == R_ARM_LDR_PC_G2) | |
8264 | /* PC relative. */ | |
8265 | signed_value = value - pc + signed_addend; | |
8266 | else | |
8267 | /* Section base relative. */ | |
8268 | signed_value = value - sb + signed_addend; | |
8269 | ||
8270 | /* Calculate the value of the relevant G_{n-1} to obtain | |
8271 | the residual at that stage. */ | |
8272 | calculate_group_reloc_mask (abs (signed_value), group - 1, &residual); | |
8273 | ||
8274 | /* Check for overflow. */ | |
8275 | if (residual >= 0x1000) | |
8276 | { | |
8277 | (*_bfd_error_handler) | |
8278 | (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"), | |
8279 | input_bfd, input_section, | |
8280 | (long) rel->r_offset, abs (signed_value), howto->name); | |
8281 | return bfd_reloc_overflow; | |
8282 | } | |
8283 | ||
8284 | /* Mask out the value and U bit. */ | |
8285 | insn &= 0xff7ff000; | |
8286 | ||
8287 | /* Set the U bit if the value to go in the place is non-negative. */ | |
8288 | if (signed_value >= 0) | |
8289 | insn |= 1 << 23; | |
8290 | ||
8291 | /* Encode the offset. */ | |
8292 | insn |= residual; | |
8293 | ||
8294 | bfd_put_32 (input_bfd, insn, hit_data); | |
8295 | } | |
8296 | return bfd_reloc_ok; | |
8297 | ||
8298 | case R_ARM_LDRS_PC_G0: | |
8299 | case R_ARM_LDRS_PC_G1: | |
8300 | case R_ARM_LDRS_PC_G2: | |
8301 | case R_ARM_LDRS_SB_G0: | |
8302 | case R_ARM_LDRS_SB_G1: | |
8303 | case R_ARM_LDRS_SB_G2: | |
8304 | { | |
8305 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
8306 | bfd_vma pc = input_section->output_section->vma | |
8307 | + input_section->output_offset + rel->r_offset; | |
8308 | bfd_vma sb = 0; /* See note above. */ | |
8309 | bfd_vma residual; | |
8310 | bfd_signed_vma signed_value; | |
8311 | int group = 0; | |
8312 | ||
8313 | /* Determine which groups of bits to calculate. */ | |
8314 | switch (r_type) | |
8315 | { | |
8316 | case R_ARM_LDRS_PC_G0: | |
8317 | case R_ARM_LDRS_SB_G0: | |
8318 | group = 0; | |
8319 | break; | |
8320 | ||
8321 | case R_ARM_LDRS_PC_G1: | |
8322 | case R_ARM_LDRS_SB_G1: | |
8323 | group = 1; | |
8324 | break; | |
8325 | ||
8326 | case R_ARM_LDRS_PC_G2: | |
8327 | case R_ARM_LDRS_SB_G2: | |
8328 | group = 2; | |
8329 | break; | |
8330 | ||
8331 | default: | |
906e58ca | 8332 | abort (); |
4962c51a MS |
8333 | } |
8334 | ||
8335 | /* If REL, extract the addend from the insn. If RELA, it will | |
8336 | have already been fetched for us. */ | |
8337 | if (globals->use_rel) | |
8338 | { | |
8339 | int negative = (insn & (1 << 23)) ? 1 : -1; | |
8340 | signed_addend = negative * (((insn & 0xf00) >> 4) + (insn & 0xf)); | |
8341 | } | |
8342 | ||
8343 | /* Compute the value (X) to go in the place. */ | |
8344 | if (r_type == R_ARM_LDRS_PC_G0 | |
8345 | || r_type == R_ARM_LDRS_PC_G1 | |
8346 | || r_type == R_ARM_LDRS_PC_G2) | |
8347 | /* PC relative. */ | |
8348 | signed_value = value - pc + signed_addend; | |
8349 | else | |
8350 | /* Section base relative. */ | |
8351 | signed_value = value - sb + signed_addend; | |
8352 | ||
8353 | /* Calculate the value of the relevant G_{n-1} to obtain | |
8354 | the residual at that stage. */ | |
8355 | calculate_group_reloc_mask (abs (signed_value), group - 1, &residual); | |
8356 | ||
8357 | /* Check for overflow. */ | |
8358 | if (residual >= 0x100) | |
8359 | { | |
8360 | (*_bfd_error_handler) | |
8361 | (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"), | |
8362 | input_bfd, input_section, | |
8363 | (long) rel->r_offset, abs (signed_value), howto->name); | |
8364 | return bfd_reloc_overflow; | |
8365 | } | |
8366 | ||
8367 | /* Mask out the value and U bit. */ | |
8368 | insn &= 0xff7ff0f0; | |
8369 | ||
8370 | /* Set the U bit if the value to go in the place is non-negative. */ | |
8371 | if (signed_value >= 0) | |
8372 | insn |= 1 << 23; | |
8373 | ||
8374 | /* Encode the offset. */ | |
8375 | insn |= ((residual & 0xf0) << 4) | (residual & 0xf); | |
8376 | ||
8377 | bfd_put_32 (input_bfd, insn, hit_data); | |
8378 | } | |
8379 | return bfd_reloc_ok; | |
8380 | ||
8381 | case R_ARM_LDC_PC_G0: | |
8382 | case R_ARM_LDC_PC_G1: | |
8383 | case R_ARM_LDC_PC_G2: | |
8384 | case R_ARM_LDC_SB_G0: | |
8385 | case R_ARM_LDC_SB_G1: | |
8386 | case R_ARM_LDC_SB_G2: | |
8387 | { | |
8388 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
8389 | bfd_vma pc = input_section->output_section->vma | |
8390 | + input_section->output_offset + rel->r_offset; | |
8391 | bfd_vma sb = 0; /* See note above. */ | |
8392 | bfd_vma residual; | |
8393 | bfd_signed_vma signed_value; | |
8394 | int group = 0; | |
8395 | ||
8396 | /* Determine which groups of bits to calculate. */ | |
8397 | switch (r_type) | |
8398 | { | |
8399 | case R_ARM_LDC_PC_G0: | |
8400 | case R_ARM_LDC_SB_G0: | |
8401 | group = 0; | |
8402 | break; | |
8403 | ||
8404 | case R_ARM_LDC_PC_G1: | |
8405 | case R_ARM_LDC_SB_G1: | |
8406 | group = 1; | |
8407 | break; | |
8408 | ||
8409 | case R_ARM_LDC_PC_G2: | |
8410 | case R_ARM_LDC_SB_G2: | |
8411 | group = 2; | |
8412 | break; | |
8413 | ||
8414 | default: | |
906e58ca | 8415 | abort (); |
4962c51a MS |
8416 | } |
8417 | ||
8418 | /* If REL, extract the addend from the insn. If RELA, it will | |
8419 | have already been fetched for us. */ | |
8420 | if (globals->use_rel) | |
8421 | { | |
8422 | int negative = (insn & (1 << 23)) ? 1 : -1; | |
8423 | signed_addend = negative * ((insn & 0xff) << 2); | |
8424 | } | |
8425 | ||
8426 | /* Compute the value (X) to go in the place. */ | |
8427 | if (r_type == R_ARM_LDC_PC_G0 | |
8428 | || r_type == R_ARM_LDC_PC_G1 | |
8429 | || r_type == R_ARM_LDC_PC_G2) | |
8430 | /* PC relative. */ | |
8431 | signed_value = value - pc + signed_addend; | |
8432 | else | |
8433 | /* Section base relative. */ | |
8434 | signed_value = value - sb + signed_addend; | |
8435 | ||
8436 | /* Calculate the value of the relevant G_{n-1} to obtain | |
8437 | the residual at that stage. */ | |
8438 | calculate_group_reloc_mask (abs (signed_value), group - 1, &residual); | |
8439 | ||
8440 | /* Check for overflow. (The absolute value to go in the place must be | |
8441 | divisible by four and, after having been divided by four, must | |
8442 | fit in eight bits.) */ | |
8443 | if ((residual & 0x3) != 0 || residual >= 0x400) | |
8444 | { | |
8445 | (*_bfd_error_handler) | |
8446 | (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"), | |
8447 | input_bfd, input_section, | |
8448 | (long) rel->r_offset, abs (signed_value), howto->name); | |
8449 | return bfd_reloc_overflow; | |
8450 | } | |
8451 | ||
8452 | /* Mask out the value and U bit. */ | |
8453 | insn &= 0xff7fff00; | |
8454 | ||
8455 | /* Set the U bit if the value to go in the place is non-negative. */ | |
8456 | if (signed_value >= 0) | |
8457 | insn |= 1 << 23; | |
8458 | ||
8459 | /* Encode the offset. */ | |
8460 | insn |= residual >> 2; | |
8461 | ||
8462 | bfd_put_32 (input_bfd, insn, hit_data); | |
8463 | } | |
8464 | return bfd_reloc_ok; | |
8465 | ||
252b5132 RH |
8466 | default: |
8467 | return bfd_reloc_notsupported; | |
8468 | } | |
8469 | } | |
8470 | ||
98c1d4aa NC |
8471 | /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */ |
8472 | static void | |
57e8b36a NC |
8473 | arm_add_to_rel (bfd * abfd, |
8474 | bfd_byte * address, | |
8475 | reloc_howto_type * howto, | |
8476 | bfd_signed_vma increment) | |
98c1d4aa | 8477 | { |
98c1d4aa NC |
8478 | bfd_signed_vma addend; |
8479 | ||
bd97cb95 DJ |
8480 | if (howto->type == R_ARM_THM_CALL |
8481 | || howto->type == R_ARM_THM_JUMP24) | |
98c1d4aa | 8482 | { |
9a5aca8c AM |
8483 | int upper_insn, lower_insn; |
8484 | int upper, lower; | |
98c1d4aa | 8485 | |
9a5aca8c AM |
8486 | upper_insn = bfd_get_16 (abfd, address); |
8487 | lower_insn = bfd_get_16 (abfd, address + 2); | |
8488 | upper = upper_insn & 0x7ff; | |
8489 | lower = lower_insn & 0x7ff; | |
8490 | ||
8491 | addend = (upper << 12) | (lower << 1); | |
ddda4409 | 8492 | addend += increment; |
9a5aca8c | 8493 | addend >>= 1; |
98c1d4aa | 8494 | |
9a5aca8c AM |
8495 | upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff); |
8496 | lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff); | |
8497 | ||
dc810e39 AM |
8498 | bfd_put_16 (abfd, (bfd_vma) upper_insn, address); |
8499 | bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2); | |
9a5aca8c AM |
8500 | } |
8501 | else | |
8502 | { | |
8503 | bfd_vma contents; | |
8504 | ||
8505 | contents = bfd_get_32 (abfd, address); | |
8506 | ||
8507 | /* Get the (signed) value from the instruction. */ | |
8508 | addend = contents & howto->src_mask; | |
8509 | if (addend & ((howto->src_mask + 1) >> 1)) | |
8510 | { | |
8511 | bfd_signed_vma mask; | |
8512 | ||
8513 | mask = -1; | |
8514 | mask &= ~ howto->src_mask; | |
8515 | addend |= mask; | |
8516 | } | |
8517 | ||
8518 | /* Add in the increment, (which is a byte value). */ | |
8519 | switch (howto->type) | |
8520 | { | |
8521 | default: | |
8522 | addend += increment; | |
8523 | break; | |
8524 | ||
8525 | case R_ARM_PC24: | |
c6596c5e | 8526 | case R_ARM_PLT32: |
5b5bb741 PB |
8527 | case R_ARM_CALL: |
8528 | case R_ARM_JUMP24: | |
9a5aca8c | 8529 | addend <<= howto->size; |
dc810e39 | 8530 | addend += increment; |
9a5aca8c AM |
8531 | |
8532 | /* Should we check for overflow here ? */ | |
8533 | ||
8534 | /* Drop any undesired bits. */ | |
8535 | addend >>= howto->rightshift; | |
8536 | break; | |
8537 | } | |
8538 | ||
8539 | contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask); | |
8540 | ||
8541 | bfd_put_32 (abfd, contents, address); | |
ddda4409 | 8542 | } |
98c1d4aa | 8543 | } |
252b5132 | 8544 | |
ba93b8ac DJ |
8545 | #define IS_ARM_TLS_RELOC(R_TYPE) \ |
8546 | ((R_TYPE) == R_ARM_TLS_GD32 \ | |
8547 | || (R_TYPE) == R_ARM_TLS_LDO32 \ | |
8548 | || (R_TYPE) == R_ARM_TLS_LDM32 \ | |
8549 | || (R_TYPE) == R_ARM_TLS_DTPOFF32 \ | |
8550 | || (R_TYPE) == R_ARM_TLS_DTPMOD32 \ | |
8551 | || (R_TYPE) == R_ARM_TLS_TPOFF32 \ | |
8552 | || (R_TYPE) == R_ARM_TLS_LE32 \ | |
8553 | || (R_TYPE) == R_ARM_TLS_IE32) | |
8554 | ||
252b5132 | 8555 | /* Relocate an ARM ELF section. */ |
906e58ca | 8556 | |
b34976b6 | 8557 | static bfd_boolean |
57e8b36a NC |
8558 | elf32_arm_relocate_section (bfd * output_bfd, |
8559 | struct bfd_link_info * info, | |
8560 | bfd * input_bfd, | |
8561 | asection * input_section, | |
8562 | bfd_byte * contents, | |
8563 | Elf_Internal_Rela * relocs, | |
8564 | Elf_Internal_Sym * local_syms, | |
8565 | asection ** local_sections) | |
252b5132 | 8566 | { |
b34976b6 AM |
8567 | Elf_Internal_Shdr *symtab_hdr; |
8568 | struct elf_link_hash_entry **sym_hashes; | |
8569 | Elf_Internal_Rela *rel; | |
8570 | Elf_Internal_Rela *relend; | |
8571 | const char *name; | |
b32d3aa2 | 8572 | struct elf32_arm_link_hash_table * globals; |
252b5132 | 8573 | |
4e7fd91e | 8574 | globals = elf32_arm_hash_table (info); |
b491616a | 8575 | |
0ffa91dd | 8576 | symtab_hdr = & elf_symtab_hdr (input_bfd); |
252b5132 RH |
8577 | sym_hashes = elf_sym_hashes (input_bfd); |
8578 | ||
8579 | rel = relocs; | |
8580 | relend = relocs + input_section->reloc_count; | |
8581 | for (; rel < relend; rel++) | |
8582 | { | |
ba96a88f NC |
8583 | int r_type; |
8584 | reloc_howto_type * howto; | |
8585 | unsigned long r_symndx; | |
8586 | Elf_Internal_Sym * sym; | |
8587 | asection * sec; | |
252b5132 | 8588 | struct elf_link_hash_entry * h; |
ba96a88f NC |
8589 | bfd_vma relocation; |
8590 | bfd_reloc_status_type r; | |
8591 | arelent bfd_reloc; | |
ba93b8ac | 8592 | char sym_type; |
0945cdfd | 8593 | bfd_boolean unresolved_reloc = FALSE; |
f2a9dd69 | 8594 | char *error_message = NULL; |
f21f3fe0 | 8595 | |
252b5132 | 8596 | r_symndx = ELF32_R_SYM (rel->r_info); |
ba96a88f | 8597 | r_type = ELF32_R_TYPE (rel->r_info); |
b32d3aa2 | 8598 | r_type = arm_real_reloc_type (globals, r_type); |
252b5132 | 8599 | |
ba96a88f NC |
8600 | if ( r_type == R_ARM_GNU_VTENTRY |
8601 | || r_type == R_ARM_GNU_VTINHERIT) | |
252b5132 RH |
8602 | continue; |
8603 | ||
b32d3aa2 | 8604 | bfd_reloc.howto = elf32_arm_howto_from_type (r_type); |
ba96a88f | 8605 | howto = bfd_reloc.howto; |
252b5132 | 8606 | |
252b5132 RH |
8607 | h = NULL; |
8608 | sym = NULL; | |
8609 | sec = NULL; | |
9b485d32 | 8610 | |
252b5132 RH |
8611 | if (r_symndx < symtab_hdr->sh_info) |
8612 | { | |
8613 | sym = local_syms + r_symndx; | |
ba93b8ac | 8614 | sym_type = ELF32_ST_TYPE (sym->st_info); |
252b5132 | 8615 | sec = local_sections[r_symndx]; |
4e7fd91e | 8616 | if (globals->use_rel) |
f8df10f4 | 8617 | { |
4e7fd91e PB |
8618 | relocation = (sec->output_section->vma |
8619 | + sec->output_offset | |
8620 | + sym->st_value); | |
ab96bf03 AM |
8621 | if (!info->relocatable |
8622 | && (sec->flags & SEC_MERGE) | |
8623 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
f8df10f4 | 8624 | { |
4e7fd91e PB |
8625 | asection *msec; |
8626 | bfd_vma addend, value; | |
8627 | ||
39623e12 | 8628 | switch (r_type) |
4e7fd91e | 8629 | { |
39623e12 PB |
8630 | case R_ARM_MOVW_ABS_NC: |
8631 | case R_ARM_MOVT_ABS: | |
8632 | value = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
8633 | addend = ((value & 0xf0000) >> 4) | (value & 0xfff); | |
8634 | addend = (addend ^ 0x8000) - 0x8000; | |
8635 | break; | |
f8df10f4 | 8636 | |
39623e12 PB |
8637 | case R_ARM_THM_MOVW_ABS_NC: |
8638 | case R_ARM_THM_MOVT_ABS: | |
8639 | value = bfd_get_16 (input_bfd, contents + rel->r_offset) | |
8640 | << 16; | |
8641 | value |= bfd_get_16 (input_bfd, | |
8642 | contents + rel->r_offset + 2); | |
8643 | addend = ((value & 0xf7000) >> 4) | (value & 0xff) | |
8644 | | ((value & 0x04000000) >> 15); | |
8645 | addend = (addend ^ 0x8000) - 0x8000; | |
8646 | break; | |
f8df10f4 | 8647 | |
39623e12 PB |
8648 | default: |
8649 | if (howto->rightshift | |
8650 | || (howto->src_mask & (howto->src_mask + 1))) | |
8651 | { | |
8652 | (*_bfd_error_handler) | |
8653 | (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"), | |
8654 | input_bfd, input_section, | |
8655 | (long) rel->r_offset, howto->name); | |
8656 | return FALSE; | |
8657 | } | |
8658 | ||
8659 | value = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
8660 | ||
8661 | /* Get the (signed) value from the instruction. */ | |
8662 | addend = value & howto->src_mask; | |
8663 | if (addend & ((howto->src_mask + 1) >> 1)) | |
8664 | { | |
8665 | bfd_signed_vma mask; | |
8666 | ||
8667 | mask = -1; | |
8668 | mask &= ~ howto->src_mask; | |
8669 | addend |= mask; | |
8670 | } | |
8671 | break; | |
4e7fd91e | 8672 | } |
39623e12 | 8673 | |
4e7fd91e PB |
8674 | msec = sec; |
8675 | addend = | |
8676 | _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend) | |
8677 | - relocation; | |
8678 | addend += msec->output_section->vma + msec->output_offset; | |
39623e12 PB |
8679 | |
8680 | /* Cases here must match those in the preceeding | |
8681 | switch statement. */ | |
8682 | switch (r_type) | |
8683 | { | |
8684 | case R_ARM_MOVW_ABS_NC: | |
8685 | case R_ARM_MOVT_ABS: | |
8686 | value = (value & 0xfff0f000) | ((addend & 0xf000) << 4) | |
8687 | | (addend & 0xfff); | |
8688 | bfd_put_32 (input_bfd, value, contents + rel->r_offset); | |
8689 | break; | |
8690 | ||
8691 | case R_ARM_THM_MOVW_ABS_NC: | |
8692 | case R_ARM_THM_MOVT_ABS: | |
8693 | value = (value & 0xfbf08f00) | ((addend & 0xf700) << 4) | |
8694 | | (addend & 0xff) | ((addend & 0x0800) << 15); | |
8695 | bfd_put_16 (input_bfd, value >> 16, | |
8696 | contents + rel->r_offset); | |
8697 | bfd_put_16 (input_bfd, value, | |
8698 | contents + rel->r_offset + 2); | |
8699 | break; | |
8700 | ||
8701 | default: | |
8702 | value = (value & ~ howto->dst_mask) | |
8703 | | (addend & howto->dst_mask); | |
8704 | bfd_put_32 (input_bfd, value, contents + rel->r_offset); | |
8705 | break; | |
8706 | } | |
f8df10f4 | 8707 | } |
f8df10f4 | 8708 | } |
4e7fd91e PB |
8709 | else |
8710 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
252b5132 RH |
8711 | } |
8712 | else | |
8713 | { | |
560e09e9 | 8714 | bfd_boolean warned; |
560e09e9 | 8715 | |
b2a8e766 AM |
8716 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
8717 | r_symndx, symtab_hdr, sym_hashes, | |
8718 | h, sec, relocation, | |
8719 | unresolved_reloc, warned); | |
ba93b8ac DJ |
8720 | |
8721 | sym_type = h->type; | |
252b5132 RH |
8722 | } |
8723 | ||
ab96bf03 AM |
8724 | if (sec != NULL && elf_discarded_section (sec)) |
8725 | { | |
8726 | /* For relocs against symbols from removed linkonce sections, | |
8727 | or sections discarded by a linker script, we just want the | |
8728 | section contents zeroed. Avoid any special processing. */ | |
8729 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); | |
8730 | rel->r_info = 0; | |
8731 | rel->r_addend = 0; | |
8732 | continue; | |
8733 | } | |
8734 | ||
8735 | if (info->relocatable) | |
8736 | { | |
8737 | /* This is a relocatable link. We don't have to change | |
8738 | anything, unless the reloc is against a section symbol, | |
8739 | in which case we have to adjust according to where the | |
8740 | section symbol winds up in the output section. */ | |
8741 | if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
8742 | { | |
8743 | if (globals->use_rel) | |
8744 | arm_add_to_rel (input_bfd, contents + rel->r_offset, | |
8745 | howto, (bfd_signed_vma) sec->output_offset); | |
8746 | else | |
8747 | rel->r_addend += sec->output_offset; | |
8748 | } | |
8749 | continue; | |
8750 | } | |
8751 | ||
252b5132 RH |
8752 | if (h != NULL) |
8753 | name = h->root.root.string; | |
8754 | else | |
8755 | { | |
8756 | name = (bfd_elf_string_from_elf_section | |
8757 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
8758 | if (name == NULL || *name == '\0') | |
8759 | name = bfd_section_name (input_bfd, sec); | |
8760 | } | |
f21f3fe0 | 8761 | |
ba93b8ac DJ |
8762 | if (r_symndx != 0 |
8763 | && r_type != R_ARM_NONE | |
8764 | && (h == NULL | |
8765 | || h->root.type == bfd_link_hash_defined | |
8766 | || h->root.type == bfd_link_hash_defweak) | |
8767 | && IS_ARM_TLS_RELOC (r_type) != (sym_type == STT_TLS)) | |
8768 | { | |
8769 | (*_bfd_error_handler) | |
8770 | ((sym_type == STT_TLS | |
8771 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") | |
8772 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")), | |
8773 | input_bfd, | |
8774 | input_section, | |
8775 | (long) rel->r_offset, | |
8776 | howto->name, | |
8777 | name); | |
8778 | } | |
8779 | ||
252b5132 RH |
8780 | r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd, |
8781 | input_section, contents, rel, | |
8782 | relocation, info, sec, name, | |
8783 | (h ? ELF_ST_TYPE (h->type) : | |
0945cdfd | 8784 | ELF_ST_TYPE (sym->st_info)), h, |
f2a9dd69 | 8785 | &unresolved_reloc, &error_message); |
0945cdfd DJ |
8786 | |
8787 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections | |
8788 | because such sections are not SEC_ALLOC and thus ld.so will | |
8789 | not process them. */ | |
8790 | if (unresolved_reloc | |
8791 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
8792 | && h->def_dynamic)) | |
8793 | { | |
8794 | (*_bfd_error_handler) | |
843fe662 L |
8795 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
8796 | input_bfd, | |
8797 | input_section, | |
8798 | (long) rel->r_offset, | |
8799 | howto->name, | |
8800 | h->root.root.string); | |
0945cdfd DJ |
8801 | return FALSE; |
8802 | } | |
252b5132 RH |
8803 | |
8804 | if (r != bfd_reloc_ok) | |
8805 | { | |
252b5132 RH |
8806 | switch (r) |
8807 | { | |
8808 | case bfd_reloc_overflow: | |
cf919dfd PB |
8809 | /* If the overflowing reloc was to an undefined symbol, |
8810 | we have already printed one error message and there | |
8811 | is no point complaining again. */ | |
8812 | if ((! h || | |
8813 | h->root.type != bfd_link_hash_undefined) | |
8814 | && (!((*info->callbacks->reloc_overflow) | |
dfeffb9f L |
8815 | (info, (h ? &h->root : NULL), name, howto->name, |
8816 | (bfd_vma) 0, input_bfd, input_section, | |
8817 | rel->r_offset)))) | |
b34976b6 | 8818 | return FALSE; |
252b5132 RH |
8819 | break; |
8820 | ||
8821 | case bfd_reloc_undefined: | |
8822 | if (!((*info->callbacks->undefined_symbol) | |
8823 | (info, name, input_bfd, input_section, | |
b34976b6 AM |
8824 | rel->r_offset, TRUE))) |
8825 | return FALSE; | |
252b5132 RH |
8826 | break; |
8827 | ||
8828 | case bfd_reloc_outofrange: | |
f2a9dd69 | 8829 | error_message = _("out of range"); |
252b5132 RH |
8830 | goto common_error; |
8831 | ||
8832 | case bfd_reloc_notsupported: | |
f2a9dd69 | 8833 | error_message = _("unsupported relocation"); |
252b5132 RH |
8834 | goto common_error; |
8835 | ||
8836 | case bfd_reloc_dangerous: | |
f2a9dd69 | 8837 | /* error_message should already be set. */ |
252b5132 RH |
8838 | goto common_error; |
8839 | ||
8840 | default: | |
f2a9dd69 | 8841 | error_message = _("unknown error"); |
8029a119 | 8842 | /* Fall through. */ |
252b5132 RH |
8843 | |
8844 | common_error: | |
f2a9dd69 DJ |
8845 | BFD_ASSERT (error_message != NULL); |
8846 | if (!((*info->callbacks->reloc_dangerous) | |
8847 | (info, error_message, input_bfd, input_section, | |
252b5132 | 8848 | rel->r_offset))) |
b34976b6 | 8849 | return FALSE; |
252b5132 RH |
8850 | break; |
8851 | } | |
8852 | } | |
8853 | } | |
8854 | ||
b34976b6 | 8855 | return TRUE; |
252b5132 RH |
8856 | } |
8857 | ||
2468f9c9 PB |
8858 | /* Add a new unwind edit to the list described by HEAD, TAIL. If INDEX is zero, |
8859 | adds the edit to the start of the list. (The list must be built in order of | |
8860 | ascending INDEX: the function's callers are primarily responsible for | |
8861 | maintaining that condition). */ | |
8862 | ||
8863 | static void | |
8864 | add_unwind_table_edit (arm_unwind_table_edit **head, | |
8865 | arm_unwind_table_edit **tail, | |
8866 | arm_unwind_edit_type type, | |
8867 | asection *linked_section, | |
8868 | unsigned int index) | |
8869 | { | |
8870 | arm_unwind_table_edit *new_edit = xmalloc (sizeof (arm_unwind_table_edit)); | |
8871 | ||
8872 | new_edit->type = type; | |
8873 | new_edit->linked_section = linked_section; | |
8874 | new_edit->index = index; | |
8875 | ||
8876 | if (index > 0) | |
8877 | { | |
8878 | new_edit->next = NULL; | |
8879 | ||
8880 | if (*tail) | |
8881 | (*tail)->next = new_edit; | |
8882 | ||
8883 | (*tail) = new_edit; | |
8884 | ||
8885 | if (!*head) | |
8886 | (*head) = new_edit; | |
8887 | } | |
8888 | else | |
8889 | { | |
8890 | new_edit->next = *head; | |
8891 | ||
8892 | if (!*tail) | |
8893 | *tail = new_edit; | |
8894 | ||
8895 | *head = new_edit; | |
8896 | } | |
8897 | } | |
8898 | ||
8899 | static _arm_elf_section_data *get_arm_elf_section_data (asection *); | |
8900 | ||
8901 | /* Increase the size of EXIDX_SEC by ADJUST bytes. ADJUST mau be negative. */ | |
8902 | static void | |
8903 | adjust_exidx_size(asection *exidx_sec, int adjust) | |
8904 | { | |
8905 | asection *out_sec; | |
8906 | ||
8907 | if (!exidx_sec->rawsize) | |
8908 | exidx_sec->rawsize = exidx_sec->size; | |
8909 | ||
8910 | bfd_set_section_size (exidx_sec->owner, exidx_sec, exidx_sec->size + adjust); | |
8911 | out_sec = exidx_sec->output_section; | |
8912 | /* Adjust size of output section. */ | |
8913 | bfd_set_section_size (out_sec->owner, out_sec, out_sec->size +adjust); | |
8914 | } | |
8915 | ||
8916 | /* Insert an EXIDX_CANTUNWIND marker at the end of a section. */ | |
8917 | static void | |
8918 | insert_cantunwind_after(asection *text_sec, asection *exidx_sec) | |
8919 | { | |
8920 | struct _arm_elf_section_data *exidx_arm_data; | |
8921 | ||
8922 | exidx_arm_data = get_arm_elf_section_data (exidx_sec); | |
8923 | add_unwind_table_edit ( | |
8924 | &exidx_arm_data->u.exidx.unwind_edit_list, | |
8925 | &exidx_arm_data->u.exidx.unwind_edit_tail, | |
8926 | INSERT_EXIDX_CANTUNWIND_AT_END, text_sec, UINT_MAX); | |
8927 | ||
8928 | adjust_exidx_size(exidx_sec, 8); | |
8929 | } | |
8930 | ||
8931 | /* Scan .ARM.exidx tables, and create a list describing edits which should be | |
8932 | made to those tables, such that: | |
8933 | ||
8934 | 1. Regions without unwind data are marked with EXIDX_CANTUNWIND entries. | |
8935 | 2. Duplicate entries are merged together (EXIDX_CANTUNWIND, or unwind | |
8936 | codes which have been inlined into the index). | |
8937 | ||
8938 | The edits are applied when the tables are written | |
8939 | (in elf32_arm_write_section). | |
8940 | */ | |
8941 | ||
8942 | bfd_boolean | |
8943 | elf32_arm_fix_exidx_coverage (asection **text_section_order, | |
8944 | unsigned int num_text_sections, | |
8945 | struct bfd_link_info *info) | |
8946 | { | |
8947 | bfd *inp; | |
8948 | unsigned int last_second_word = 0, i; | |
8949 | asection *last_exidx_sec = NULL; | |
8950 | asection *last_text_sec = NULL; | |
8951 | int last_unwind_type = -1; | |
8952 | ||
8953 | /* Walk over all EXIDX sections, and create backlinks from the corrsponding | |
8954 | text sections. */ | |
8955 | for (inp = info->input_bfds; inp != NULL; inp = inp->link_next) | |
8956 | { | |
8957 | asection *sec; | |
8958 | ||
8959 | for (sec = inp->sections; sec != NULL; sec = sec->next) | |
8960 | { | |
8961 | struct bfd_elf_section_data *elf_sec = elf_section_data (sec); | |
8962 | Elf_Internal_Shdr *hdr = &elf_sec->this_hdr; | |
8963 | ||
dec9d5df | 8964 | if (!hdr || hdr->sh_type != SHT_ARM_EXIDX) |
2468f9c9 PB |
8965 | continue; |
8966 | ||
8967 | if (elf_sec->linked_to) | |
8968 | { | |
8969 | Elf_Internal_Shdr *linked_hdr | |
8970 | = &elf_section_data (elf_sec->linked_to)->this_hdr; | |
8971 | struct _arm_elf_section_data *linked_sec_arm_data | |
8972 | = get_arm_elf_section_data (linked_hdr->bfd_section); | |
8973 | ||
8974 | if (linked_sec_arm_data == NULL) | |
8975 | continue; | |
8976 | ||
8977 | /* Link this .ARM.exidx section back from the text section it | |
8978 | describes. */ | |
8979 | linked_sec_arm_data->u.text.arm_exidx_sec = sec; | |
8980 | } | |
8981 | } | |
8982 | } | |
8983 | ||
8984 | /* Walk all text sections in order of increasing VMA. Eilminate duplicate | |
8985 | index table entries (EXIDX_CANTUNWIND and inlined unwind opcodes), | |
8986 | and add EXIDX_CANTUNWIND entries for sections with no unwind table data. | |
8987 | */ | |
8988 | ||
8989 | for (i = 0; i < num_text_sections; i++) | |
8990 | { | |
8991 | asection *sec = text_section_order[i]; | |
8992 | asection *exidx_sec; | |
8993 | struct _arm_elf_section_data *arm_data = get_arm_elf_section_data (sec); | |
8994 | struct _arm_elf_section_data *exidx_arm_data; | |
8995 | bfd_byte *contents = NULL; | |
8996 | int deleted_exidx_bytes = 0; | |
8997 | bfd_vma j; | |
8998 | arm_unwind_table_edit *unwind_edit_head = NULL; | |
8999 | arm_unwind_table_edit *unwind_edit_tail = NULL; | |
9000 | Elf_Internal_Shdr *hdr; | |
9001 | bfd *ibfd; | |
9002 | ||
9003 | if (arm_data == NULL) | |
9004 | continue; | |
9005 | ||
9006 | exidx_sec = arm_data->u.text.arm_exidx_sec; | |
9007 | if (exidx_sec == NULL) | |
9008 | { | |
9009 | /* Section has no unwind data. */ | |
9010 | if (last_unwind_type == 0 || !last_exidx_sec) | |
9011 | continue; | |
9012 | ||
9013 | /* Ignore zero sized sections. */ | |
9014 | if (sec->size == 0) | |
9015 | continue; | |
9016 | ||
9017 | insert_cantunwind_after(last_text_sec, last_exidx_sec); | |
9018 | last_unwind_type = 0; | |
9019 | continue; | |
9020 | } | |
9021 | ||
22a8f80e PB |
9022 | /* Skip /DISCARD/ sections. */ |
9023 | if (bfd_is_abs_section (exidx_sec->output_section)) | |
9024 | continue; | |
9025 | ||
2468f9c9 PB |
9026 | hdr = &elf_section_data (exidx_sec)->this_hdr; |
9027 | if (hdr->sh_type != SHT_ARM_EXIDX) | |
9028 | continue; | |
9029 | ||
9030 | exidx_arm_data = get_arm_elf_section_data (exidx_sec); | |
9031 | if (exidx_arm_data == NULL) | |
9032 | continue; | |
9033 | ||
9034 | ibfd = exidx_sec->owner; | |
9035 | ||
9036 | if (hdr->contents != NULL) | |
9037 | contents = hdr->contents; | |
9038 | else if (! bfd_malloc_and_get_section (ibfd, exidx_sec, &contents)) | |
9039 | /* An error? */ | |
9040 | continue; | |
9041 | ||
9042 | for (j = 0; j < hdr->sh_size; j += 8) | |
9043 | { | |
9044 | unsigned int second_word = bfd_get_32 (ibfd, contents + j + 4); | |
9045 | int unwind_type; | |
9046 | int elide = 0; | |
9047 | ||
9048 | /* An EXIDX_CANTUNWIND entry. */ | |
9049 | if (second_word == 1) | |
9050 | { | |
9051 | if (last_unwind_type == 0) | |
9052 | elide = 1; | |
9053 | unwind_type = 0; | |
9054 | } | |
9055 | /* Inlined unwinding data. Merge if equal to previous. */ | |
9056 | else if ((second_word & 0x80000000) != 0) | |
9057 | { | |
9058 | if (last_second_word == second_word && last_unwind_type == 1) | |
9059 | elide = 1; | |
9060 | unwind_type = 1; | |
9061 | last_second_word = second_word; | |
9062 | } | |
9063 | /* Normal table entry. In theory we could merge these too, | |
9064 | but duplicate entries are likely to be much less common. */ | |
9065 | else | |
9066 | unwind_type = 2; | |
9067 | ||
9068 | if (elide) | |
9069 | { | |
9070 | add_unwind_table_edit (&unwind_edit_head, &unwind_edit_tail, | |
9071 | DELETE_EXIDX_ENTRY, NULL, j / 8); | |
9072 | ||
9073 | deleted_exidx_bytes += 8; | |
9074 | } | |
9075 | ||
9076 | last_unwind_type = unwind_type; | |
9077 | } | |
9078 | ||
9079 | /* Free contents if we allocated it ourselves. */ | |
9080 | if (contents != hdr->contents) | |
9081 | free (contents); | |
9082 | ||
9083 | /* Record edits to be applied later (in elf32_arm_write_section). */ | |
9084 | exidx_arm_data->u.exidx.unwind_edit_list = unwind_edit_head; | |
9085 | exidx_arm_data->u.exidx.unwind_edit_tail = unwind_edit_tail; | |
9086 | ||
9087 | if (deleted_exidx_bytes > 0) | |
9088 | adjust_exidx_size(exidx_sec, -deleted_exidx_bytes); | |
9089 | ||
9090 | last_exidx_sec = exidx_sec; | |
9091 | last_text_sec = sec; | |
9092 | } | |
9093 | ||
9094 | /* Add terminating CANTUNWIND entry. */ | |
9095 | if (last_exidx_sec && last_unwind_type != 0) | |
9096 | insert_cantunwind_after(last_text_sec, last_exidx_sec); | |
9097 | ||
9098 | return TRUE; | |
9099 | } | |
9100 | ||
3e6b1042 DJ |
9101 | static bfd_boolean |
9102 | elf32_arm_output_glue_section (struct bfd_link_info *info, bfd *obfd, | |
9103 | bfd *ibfd, const char *name) | |
9104 | { | |
9105 | asection *sec, *osec; | |
9106 | ||
9107 | sec = bfd_get_section_by_name (ibfd, name); | |
9108 | if (sec == NULL || (sec->flags & SEC_EXCLUDE) != 0) | |
9109 | return TRUE; | |
9110 | ||
9111 | osec = sec->output_section; | |
9112 | if (elf32_arm_write_section (obfd, info, sec, sec->contents)) | |
9113 | return TRUE; | |
9114 | ||
9115 | if (! bfd_set_section_contents (obfd, osec, sec->contents, | |
9116 | sec->output_offset, sec->size)) | |
9117 | return FALSE; | |
9118 | ||
9119 | return TRUE; | |
9120 | } | |
9121 | ||
9122 | static bfd_boolean | |
9123 | elf32_arm_final_link (bfd *abfd, struct bfd_link_info *info) | |
9124 | { | |
9125 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (info); | |
9126 | ||
9127 | /* Invoke the regular ELF backend linker to do all the work. */ | |
9128 | if (!bfd_elf_final_link (abfd, info)) | |
9129 | return FALSE; | |
9130 | ||
9131 | /* Write out any glue sections now that we have created all the | |
9132 | stubs. */ | |
9133 | if (globals->bfd_of_glue_owner != NULL) | |
9134 | { | |
9135 | if (! elf32_arm_output_glue_section (info, abfd, | |
9136 | globals->bfd_of_glue_owner, | |
9137 | ARM2THUMB_GLUE_SECTION_NAME)) | |
9138 | return FALSE; | |
9139 | ||
9140 | if (! elf32_arm_output_glue_section (info, abfd, | |
9141 | globals->bfd_of_glue_owner, | |
9142 | THUMB2ARM_GLUE_SECTION_NAME)) | |
9143 | return FALSE; | |
9144 | ||
9145 | if (! elf32_arm_output_glue_section (info, abfd, | |
9146 | globals->bfd_of_glue_owner, | |
9147 | VFP11_ERRATUM_VENEER_SECTION_NAME)) | |
9148 | return FALSE; | |
9149 | ||
9150 | if (! elf32_arm_output_glue_section (info, abfd, | |
9151 | globals->bfd_of_glue_owner, | |
9152 | ARM_BX_GLUE_SECTION_NAME)) | |
9153 | return FALSE; | |
9154 | } | |
9155 | ||
9156 | return TRUE; | |
9157 | } | |
9158 | ||
c178919b NC |
9159 | /* Set the right machine number. */ |
9160 | ||
9161 | static bfd_boolean | |
57e8b36a | 9162 | elf32_arm_object_p (bfd *abfd) |
c178919b | 9163 | { |
5a6c6817 | 9164 | unsigned int mach; |
57e8b36a | 9165 | |
5a6c6817 | 9166 | mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION); |
c178919b | 9167 | |
5a6c6817 NC |
9168 | if (mach != bfd_mach_arm_unknown) |
9169 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach); | |
9170 | ||
9171 | else if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT) | |
9172 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_ep9312); | |
e16bb312 | 9173 | |
e16bb312 | 9174 | else |
5a6c6817 | 9175 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach); |
c178919b NC |
9176 | |
9177 | return TRUE; | |
9178 | } | |
9179 | ||
fc830a83 | 9180 | /* Function to keep ARM specific flags in the ELF header. */ |
3c9458e9 | 9181 | |
b34976b6 | 9182 | static bfd_boolean |
57e8b36a | 9183 | elf32_arm_set_private_flags (bfd *abfd, flagword flags) |
252b5132 RH |
9184 | { |
9185 | if (elf_flags_init (abfd) | |
9186 | && elf_elfheader (abfd)->e_flags != flags) | |
9187 | { | |
fc830a83 NC |
9188 | if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN) |
9189 | { | |
fd2ec330 | 9190 | if (flags & EF_ARM_INTERWORK) |
d003868e AM |
9191 | (*_bfd_error_handler) |
9192 | (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"), | |
9193 | abfd); | |
fc830a83 | 9194 | else |
d003868e AM |
9195 | _bfd_error_handler |
9196 | (_("Warning: Clearing the interworking flag of %B due to outside request"), | |
9197 | abfd); | |
fc830a83 | 9198 | } |
252b5132 RH |
9199 | } |
9200 | else | |
9201 | { | |
9202 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 | 9203 | elf_flags_init (abfd) = TRUE; |
252b5132 RH |
9204 | } |
9205 | ||
b34976b6 | 9206 | return TRUE; |
252b5132 RH |
9207 | } |
9208 | ||
fc830a83 | 9209 | /* Copy backend specific data from one object module to another. */ |
9b485d32 | 9210 | |
b34976b6 | 9211 | static bfd_boolean |
57e8b36a | 9212 | elf32_arm_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
252b5132 RH |
9213 | { |
9214 | flagword in_flags; | |
9215 | flagword out_flags; | |
9216 | ||
0ffa91dd | 9217 | if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd)) |
b34976b6 | 9218 | return TRUE; |
252b5132 | 9219 | |
fc830a83 | 9220 | in_flags = elf_elfheader (ibfd)->e_flags; |
252b5132 RH |
9221 | out_flags = elf_elfheader (obfd)->e_flags; |
9222 | ||
fc830a83 NC |
9223 | if (elf_flags_init (obfd) |
9224 | && EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN | |
9225 | && in_flags != out_flags) | |
252b5132 | 9226 | { |
252b5132 | 9227 | /* Cannot mix APCS26 and APCS32 code. */ |
fd2ec330 | 9228 | if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26)) |
b34976b6 | 9229 | return FALSE; |
252b5132 RH |
9230 | |
9231 | /* Cannot mix float APCS and non-float APCS code. */ | |
fd2ec330 | 9232 | if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT)) |
b34976b6 | 9233 | return FALSE; |
252b5132 RH |
9234 | |
9235 | /* If the src and dest have different interworking flags | |
9236 | then turn off the interworking bit. */ | |
fd2ec330 | 9237 | if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK)) |
252b5132 | 9238 | { |
fd2ec330 | 9239 | if (out_flags & EF_ARM_INTERWORK) |
d003868e AM |
9240 | _bfd_error_handler |
9241 | (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"), | |
9242 | obfd, ibfd); | |
252b5132 | 9243 | |
fd2ec330 | 9244 | in_flags &= ~EF_ARM_INTERWORK; |
252b5132 | 9245 | } |
1006ba19 PB |
9246 | |
9247 | /* Likewise for PIC, though don't warn for this case. */ | |
fd2ec330 PB |
9248 | if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC)) |
9249 | in_flags &= ~EF_ARM_PIC; | |
252b5132 RH |
9250 | } |
9251 | ||
9252 | elf_elfheader (obfd)->e_flags = in_flags; | |
b34976b6 | 9253 | elf_flags_init (obfd) = TRUE; |
252b5132 | 9254 | |
94a3258f PB |
9255 | /* Also copy the EI_OSABI field. */ |
9256 | elf_elfheader (obfd)->e_ident[EI_OSABI] = | |
9257 | elf_elfheader (ibfd)->e_ident[EI_OSABI]; | |
9258 | ||
104d59d1 JM |
9259 | /* Copy object attributes. */ |
9260 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
ee065d83 PB |
9261 | |
9262 | return TRUE; | |
9263 | } | |
9264 | ||
9265 | /* Values for Tag_ABI_PCS_R9_use. */ | |
9266 | enum | |
9267 | { | |
9268 | AEABI_R9_V6, | |
9269 | AEABI_R9_SB, | |
9270 | AEABI_R9_TLS, | |
9271 | AEABI_R9_unused | |
9272 | }; | |
9273 | ||
9274 | /* Values for Tag_ABI_PCS_RW_data. */ | |
9275 | enum | |
9276 | { | |
9277 | AEABI_PCS_RW_data_absolute, | |
9278 | AEABI_PCS_RW_data_PCrel, | |
9279 | AEABI_PCS_RW_data_SBrel, | |
9280 | AEABI_PCS_RW_data_unused | |
9281 | }; | |
9282 | ||
9283 | /* Values for Tag_ABI_enum_size. */ | |
9284 | enum | |
9285 | { | |
9286 | AEABI_enum_unused, | |
9287 | AEABI_enum_short, | |
9288 | AEABI_enum_wide, | |
9289 | AEABI_enum_forced_wide | |
9290 | }; | |
9291 | ||
104d59d1 JM |
9292 | /* Determine whether an object attribute tag takes an integer, a |
9293 | string or both. */ | |
906e58ca | 9294 | |
104d59d1 JM |
9295 | static int |
9296 | elf32_arm_obj_attrs_arg_type (int tag) | |
9297 | { | |
9298 | if (tag == Tag_compatibility) | |
3483fe2e | 9299 | return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_STR_VAL; |
2d0bb761 | 9300 | else if (tag == Tag_nodefaults) |
3483fe2e AS |
9301 | return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_NO_DEFAULT; |
9302 | else if (tag == Tag_CPU_raw_name || tag == Tag_CPU_name) | |
9303 | return ATTR_TYPE_FLAG_STR_VAL; | |
104d59d1 | 9304 | else if (tag < 32) |
3483fe2e | 9305 | return ATTR_TYPE_FLAG_INT_VAL; |
104d59d1 | 9306 | else |
3483fe2e | 9307 | return (tag & 1) != 0 ? ATTR_TYPE_FLAG_STR_VAL : ATTR_TYPE_FLAG_INT_VAL; |
104d59d1 JM |
9308 | } |
9309 | ||
5aa6ff7c AS |
9310 | /* The ABI defines that Tag_conformance should be emitted first, and that |
9311 | Tag_nodefaults should be second (if either is defined). This sets those | |
9312 | two positions, and bumps up the position of all the remaining tags to | |
9313 | compensate. */ | |
9314 | static int | |
9315 | elf32_arm_obj_attrs_order (int num) | |
9316 | { | |
9317 | if (num == 4) | |
9318 | return Tag_conformance; | |
9319 | if (num == 5) | |
9320 | return Tag_nodefaults; | |
9321 | if ((num - 2) < Tag_nodefaults) | |
9322 | return num - 2; | |
9323 | if ((num - 1) < Tag_conformance) | |
9324 | return num - 1; | |
9325 | return num; | |
9326 | } | |
9327 | ||
91e22acd AS |
9328 | /* Read the architecture from the Tag_also_compatible_with attribute, if any. |
9329 | Returns -1 if no architecture could be read. */ | |
9330 | ||
9331 | static int | |
9332 | get_secondary_compatible_arch (bfd *abfd) | |
9333 | { | |
9334 | obj_attribute *attr = | |
9335 | &elf_known_obj_attributes_proc (abfd)[Tag_also_compatible_with]; | |
9336 | ||
9337 | /* Note: the tag and its argument below are uleb128 values, though | |
9338 | currently-defined values fit in one byte for each. */ | |
9339 | if (attr->s | |
9340 | && attr->s[0] == Tag_CPU_arch | |
9341 | && (attr->s[1] & 128) != 128 | |
9342 | && attr->s[2] == 0) | |
9343 | return attr->s[1]; | |
9344 | ||
9345 | /* This tag is "safely ignorable", so don't complain if it looks funny. */ | |
9346 | return -1; | |
9347 | } | |
9348 | ||
9349 | /* Set, or unset, the architecture of the Tag_also_compatible_with attribute. | |
9350 | The tag is removed if ARCH is -1. */ | |
9351 | ||
8e79c3df | 9352 | static void |
91e22acd | 9353 | set_secondary_compatible_arch (bfd *abfd, int arch) |
8e79c3df | 9354 | { |
91e22acd AS |
9355 | obj_attribute *attr = |
9356 | &elf_known_obj_attributes_proc (abfd)[Tag_also_compatible_with]; | |
8e79c3df | 9357 | |
91e22acd AS |
9358 | if (arch == -1) |
9359 | { | |
9360 | attr->s = NULL; | |
9361 | return; | |
8e79c3df | 9362 | } |
91e22acd AS |
9363 | |
9364 | /* Note: the tag and its argument below are uleb128 values, though | |
9365 | currently-defined values fit in one byte for each. */ | |
9366 | if (!attr->s) | |
9367 | attr->s = bfd_alloc (abfd, 3); | |
9368 | attr->s[0] = Tag_CPU_arch; | |
9369 | attr->s[1] = arch; | |
9370 | attr->s[2] = '\0'; | |
8e79c3df CM |
9371 | } |
9372 | ||
91e22acd AS |
9373 | /* Combine two values for Tag_CPU_arch, taking secondary compatibility tags |
9374 | into account. */ | |
9375 | ||
9376 | static int | |
9377 | tag_cpu_arch_combine (bfd *ibfd, int oldtag, int *secondary_compat_out, | |
9378 | int newtag, int secondary_compat) | |
8e79c3df | 9379 | { |
91e22acd AS |
9380 | #define T(X) TAG_CPU_ARCH_##X |
9381 | int tagl, tagh, result; | |
9382 | const int v6t2[] = | |
9383 | { | |
9384 | T(V6T2), /* PRE_V4. */ | |
9385 | T(V6T2), /* V4. */ | |
9386 | T(V6T2), /* V4T. */ | |
9387 | T(V6T2), /* V5T. */ | |
9388 | T(V6T2), /* V5TE. */ | |
9389 | T(V6T2), /* V5TEJ. */ | |
9390 | T(V6T2), /* V6. */ | |
9391 | T(V7), /* V6KZ. */ | |
9392 | T(V6T2) /* V6T2. */ | |
9393 | }; | |
9394 | const int v6k[] = | |
9395 | { | |
9396 | T(V6K), /* PRE_V4. */ | |
9397 | T(V6K), /* V4. */ | |
9398 | T(V6K), /* V4T. */ | |
9399 | T(V6K), /* V5T. */ | |
9400 | T(V6K), /* V5TE. */ | |
9401 | T(V6K), /* V5TEJ. */ | |
9402 | T(V6K), /* V6. */ | |
9403 | T(V6KZ), /* V6KZ. */ | |
9404 | T(V7), /* V6T2. */ | |
9405 | T(V6K) /* V6K. */ | |
9406 | }; | |
9407 | const int v7[] = | |
9408 | { | |
9409 | T(V7), /* PRE_V4. */ | |
9410 | T(V7), /* V4. */ | |
9411 | T(V7), /* V4T. */ | |
9412 | T(V7), /* V5T. */ | |
9413 | T(V7), /* V5TE. */ | |
9414 | T(V7), /* V5TEJ. */ | |
9415 | T(V7), /* V6. */ | |
9416 | T(V7), /* V6KZ. */ | |
9417 | T(V7), /* V6T2. */ | |
9418 | T(V7), /* V6K. */ | |
9419 | T(V7) /* V7. */ | |
9420 | }; | |
9421 | const int v6_m[] = | |
9422 | { | |
9423 | -1, /* PRE_V4. */ | |
9424 | -1, /* V4. */ | |
9425 | T(V6K), /* V4T. */ | |
9426 | T(V6K), /* V5T. */ | |
9427 | T(V6K), /* V5TE. */ | |
9428 | T(V6K), /* V5TEJ. */ | |
9429 | T(V6K), /* V6. */ | |
9430 | T(V6KZ), /* V6KZ. */ | |
9431 | T(V7), /* V6T2. */ | |
9432 | T(V6K), /* V6K. */ | |
9433 | T(V7), /* V7. */ | |
9434 | T(V6_M) /* V6_M. */ | |
9435 | }; | |
9436 | const int v6s_m[] = | |
9437 | { | |
9438 | -1, /* PRE_V4. */ | |
9439 | -1, /* V4. */ | |
9440 | T(V6K), /* V4T. */ | |
9441 | T(V6K), /* V5T. */ | |
9442 | T(V6K), /* V5TE. */ | |
9443 | T(V6K), /* V5TEJ. */ | |
9444 | T(V6K), /* V6. */ | |
9445 | T(V6KZ), /* V6KZ. */ | |
9446 | T(V7), /* V6T2. */ | |
9447 | T(V6K), /* V6K. */ | |
9448 | T(V7), /* V7. */ | |
9449 | T(V6S_M), /* V6_M. */ | |
9450 | T(V6S_M) /* V6S_M. */ | |
9451 | }; | |
9452 | const int v4t_plus_v6_m[] = | |
9453 | { | |
9454 | -1, /* PRE_V4. */ | |
9455 | -1, /* V4. */ | |
9456 | T(V4T), /* V4T. */ | |
9457 | T(V5T), /* V5T. */ | |
9458 | T(V5TE), /* V5TE. */ | |
9459 | T(V5TEJ), /* V5TEJ. */ | |
9460 | T(V6), /* V6. */ | |
9461 | T(V6KZ), /* V6KZ. */ | |
9462 | T(V6T2), /* V6T2. */ | |
9463 | T(V6K), /* V6K. */ | |
9464 | T(V7), /* V7. */ | |
9465 | T(V6_M), /* V6_M. */ | |
9466 | T(V6S_M), /* V6S_M. */ | |
9467 | T(V4T_PLUS_V6_M) /* V4T plus V6_M. */ | |
9468 | }; | |
9469 | const int *comb[] = | |
9470 | { | |
9471 | v6t2, | |
9472 | v6k, | |
9473 | v7, | |
9474 | v6_m, | |
9475 | v6s_m, | |
9476 | /* Pseudo-architecture. */ | |
9477 | v4t_plus_v6_m | |
9478 | }; | |
9479 | ||
9480 | /* Check we've not got a higher architecture than we know about. */ | |
9481 | ||
9482 | if (oldtag >= MAX_TAG_CPU_ARCH || newtag >= MAX_TAG_CPU_ARCH) | |
9483 | { | |
3895f852 | 9484 | _bfd_error_handler (_("error: %B: Unknown CPU architecture"), ibfd); |
91e22acd AS |
9485 | return -1; |
9486 | } | |
9487 | ||
9488 | /* Override old tag if we have a Tag_also_compatible_with on the output. */ | |
9489 | ||
9490 | if ((oldtag == T(V6_M) && *secondary_compat_out == T(V4T)) | |
9491 | || (oldtag == T(V4T) && *secondary_compat_out == T(V6_M))) | |
9492 | oldtag = T(V4T_PLUS_V6_M); | |
9493 | ||
9494 | /* And override the new tag if we have a Tag_also_compatible_with on the | |
9495 | input. */ | |
9496 | ||
9497 | if ((newtag == T(V6_M) && secondary_compat == T(V4T)) | |
9498 | || (newtag == T(V4T) && secondary_compat == T(V6_M))) | |
9499 | newtag = T(V4T_PLUS_V6_M); | |
9500 | ||
9501 | tagl = (oldtag < newtag) ? oldtag : newtag; | |
9502 | result = tagh = (oldtag > newtag) ? oldtag : newtag; | |
9503 | ||
9504 | /* Architectures before V6KZ add features monotonically. */ | |
9505 | if (tagh <= TAG_CPU_ARCH_V6KZ) | |
9506 | return result; | |
9507 | ||
9508 | result = comb[tagh - T(V6T2)][tagl]; | |
9509 | ||
9510 | /* Use Tag_CPU_arch == V4T and Tag_also_compatible_with (Tag_CPU_arch V6_M) | |
9511 | as the canonical version. */ | |
9512 | if (result == T(V4T_PLUS_V6_M)) | |
9513 | { | |
9514 | result = T(V4T); | |
9515 | *secondary_compat_out = T(V6_M); | |
9516 | } | |
9517 | else | |
9518 | *secondary_compat_out = -1; | |
9519 | ||
9520 | if (result == -1) | |
9521 | { | |
3895f852 | 9522 | _bfd_error_handler (_("error: %B: Conflicting CPU architectures %d/%d"), |
91e22acd AS |
9523 | ibfd, oldtag, newtag); |
9524 | return -1; | |
9525 | } | |
9526 | ||
9527 | return result; | |
9528 | #undef T | |
8e79c3df CM |
9529 | } |
9530 | ||
ee065d83 PB |
9531 | /* Merge EABI object attributes from IBFD into OBFD. Raise an error if there |
9532 | are conflicting attributes. */ | |
906e58ca | 9533 | |
ee065d83 PB |
9534 | static bfd_boolean |
9535 | elf32_arm_merge_eabi_attributes (bfd *ibfd, bfd *obfd) | |
9536 | { | |
104d59d1 JM |
9537 | obj_attribute *in_attr; |
9538 | obj_attribute *out_attr; | |
9539 | obj_attribute_list *in_list; | |
8e79c3df | 9540 | obj_attribute_list *out_list; |
91e22acd | 9541 | obj_attribute_list **out_listp; |
ee065d83 PB |
9542 | /* Some tags have 0 = don't care, 1 = strong requirement, |
9543 | 2 = weak requirement. */ | |
91e22acd | 9544 | static const int order_021[3] = {0, 2, 1}; |
b1cc4aeb PB |
9545 | /* For use with Tag_VFP_arch. */ |
9546 | static const int order_01243[5] = {0, 1, 2, 4, 3}; | |
ee065d83 | 9547 | int i; |
91e22acd | 9548 | bfd_boolean result = TRUE; |
ee065d83 | 9549 | |
3e6b1042 DJ |
9550 | /* Skip the linker stubs file. This preserves previous behavior |
9551 | of accepting unknown attributes in the first input file - but | |
9552 | is that a bug? */ | |
9553 | if (ibfd->flags & BFD_LINKER_CREATED) | |
9554 | return TRUE; | |
9555 | ||
104d59d1 | 9556 | if (!elf_known_obj_attributes_proc (obfd)[0].i) |
ee065d83 PB |
9557 | { |
9558 | /* This is the first object. Copy the attributes. */ | |
104d59d1 | 9559 | _bfd_elf_copy_obj_attributes (ibfd, obfd); |
004ae526 PB |
9560 | |
9561 | /* Use the Tag_null value to indicate the attributes have been | |
9562 | initialized. */ | |
104d59d1 | 9563 | elf_known_obj_attributes_proc (obfd)[0].i = 1; |
004ae526 | 9564 | |
ee065d83 PB |
9565 | return TRUE; |
9566 | } | |
9567 | ||
104d59d1 JM |
9568 | in_attr = elf_known_obj_attributes_proc (ibfd); |
9569 | out_attr = elf_known_obj_attributes_proc (obfd); | |
ee065d83 PB |
9570 | /* This needs to happen before Tag_ABI_FP_number_model is merged. */ |
9571 | if (in_attr[Tag_ABI_VFP_args].i != out_attr[Tag_ABI_VFP_args].i) | |
9572 | { | |
8e79c3df | 9573 | /* Ignore mismatches if the object doesn't use floating point. */ |
ee065d83 PB |
9574 | if (out_attr[Tag_ABI_FP_number_model].i == 0) |
9575 | out_attr[Tag_ABI_VFP_args].i = in_attr[Tag_ABI_VFP_args].i; | |
9576 | else if (in_attr[Tag_ABI_FP_number_model].i != 0) | |
9577 | { | |
9578 | _bfd_error_handler | |
3895f852 | 9579 | (_("error: %B uses VFP register arguments, %B does not"), |
ee065d83 | 9580 | ibfd, obfd); |
91e22acd | 9581 | result = FALSE; |
ee065d83 PB |
9582 | } |
9583 | } | |
9584 | ||
104d59d1 | 9585 | for (i = 4; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++) |
ee065d83 PB |
9586 | { |
9587 | /* Merge this attribute with existing attributes. */ | |
9588 | switch (i) | |
9589 | { | |
9590 | case Tag_CPU_raw_name: | |
9591 | case Tag_CPU_name: | |
91e22acd | 9592 | /* These are merged after Tag_CPU_arch. */ |
ee065d83 PB |
9593 | break; |
9594 | ||
9595 | case Tag_ABI_optimization_goals: | |
9596 | case Tag_ABI_FP_optimization_goals: | |
9597 | /* Use the first value seen. */ | |
9598 | break; | |
9599 | ||
9600 | case Tag_CPU_arch: | |
91e22acd AS |
9601 | { |
9602 | int secondary_compat = -1, secondary_compat_out = -1; | |
9603 | unsigned int saved_out_attr = out_attr[i].i; | |
9604 | static const char *name_table[] = { | |
9605 | /* These aren't real CPU names, but we can't guess | |
9606 | that from the architecture version alone. */ | |
9607 | "Pre v4", | |
9608 | "ARM v4", | |
9609 | "ARM v4T", | |
9610 | "ARM v5T", | |
9611 | "ARM v5TE", | |
9612 | "ARM v5TEJ", | |
9613 | "ARM v6", | |
9614 | "ARM v6KZ", | |
9615 | "ARM v6T2", | |
9616 | "ARM v6K", | |
9617 | "ARM v7", | |
9618 | "ARM v6-M", | |
9619 | "ARM v6S-M" | |
9620 | }; | |
9621 | ||
9622 | /* Merge Tag_CPU_arch and Tag_also_compatible_with. */ | |
9623 | secondary_compat = get_secondary_compatible_arch (ibfd); | |
9624 | secondary_compat_out = get_secondary_compatible_arch (obfd); | |
9625 | out_attr[i].i = tag_cpu_arch_combine (ibfd, out_attr[i].i, | |
9626 | &secondary_compat_out, | |
9627 | in_attr[i].i, | |
9628 | secondary_compat); | |
9629 | set_secondary_compatible_arch (obfd, secondary_compat_out); | |
9630 | ||
9631 | /* Merge Tag_CPU_name and Tag_CPU_raw_name. */ | |
9632 | if (out_attr[i].i == saved_out_attr) | |
9633 | ; /* Leave the names alone. */ | |
9634 | else if (out_attr[i].i == in_attr[i].i) | |
9635 | { | |
9636 | /* The output architecture has been changed to match the | |
9637 | input architecture. Use the input names. */ | |
9638 | out_attr[Tag_CPU_name].s = in_attr[Tag_CPU_name].s | |
9639 | ? _bfd_elf_attr_strdup (obfd, in_attr[Tag_CPU_name].s) | |
9640 | : NULL; | |
9641 | out_attr[Tag_CPU_raw_name].s = in_attr[Tag_CPU_raw_name].s | |
9642 | ? _bfd_elf_attr_strdup (obfd, in_attr[Tag_CPU_raw_name].s) | |
9643 | : NULL; | |
9644 | } | |
9645 | else | |
9646 | { | |
9647 | out_attr[Tag_CPU_name].s = NULL; | |
9648 | out_attr[Tag_CPU_raw_name].s = NULL; | |
9649 | } | |
9650 | ||
9651 | /* If we still don't have a value for Tag_CPU_name, | |
9652 | make one up now. Tag_CPU_raw_name remains blank. */ | |
9653 | if (out_attr[Tag_CPU_name].s == NULL | |
9654 | && out_attr[i].i < ARRAY_SIZE (name_table)) | |
9655 | out_attr[Tag_CPU_name].s = | |
9656 | _bfd_elf_attr_strdup (obfd, name_table[out_attr[i].i]); | |
9657 | } | |
9658 | break; | |
9659 | ||
ee065d83 PB |
9660 | case Tag_ARM_ISA_use: |
9661 | case Tag_THUMB_ISA_use: | |
ee065d83 | 9662 | case Tag_WMMX_arch: |
91e22acd AS |
9663 | case Tag_Advanced_SIMD_arch: |
9664 | /* ??? Do Advanced_SIMD (NEON) and WMMX conflict? */ | |
ee065d83 | 9665 | case Tag_ABI_FP_rounding: |
ee065d83 PB |
9666 | case Tag_ABI_FP_exceptions: |
9667 | case Tag_ABI_FP_user_exceptions: | |
9668 | case Tag_ABI_FP_number_model: | |
91e22acd AS |
9669 | case Tag_VFP_HP_extension: |
9670 | case Tag_CPU_unaligned_access: | |
9671 | case Tag_T2EE_use: | |
9672 | case Tag_Virtualization_use: | |
9673 | case Tag_MPextension_use: | |
ee065d83 PB |
9674 | /* Use the largest value specified. */ |
9675 | if (in_attr[i].i > out_attr[i].i) | |
9676 | out_attr[i].i = in_attr[i].i; | |
9677 | break; | |
9678 | ||
91e22acd AS |
9679 | case Tag_ABI_align8_preserved: |
9680 | case Tag_ABI_PCS_RO_data: | |
9681 | /* Use the smallest value specified. */ | |
9682 | if (in_attr[i].i < out_attr[i].i) | |
9683 | out_attr[i].i = in_attr[i].i; | |
9684 | break; | |
9685 | ||
9686 | case Tag_ABI_align8_needed: | |
9687 | if ((in_attr[i].i > 0 || out_attr[i].i > 0) | |
9688 | && (in_attr[Tag_ABI_align8_preserved].i == 0 | |
9689 | || out_attr[Tag_ABI_align8_preserved].i == 0)) | |
ee065d83 | 9690 | { |
91e22acd AS |
9691 | /* This error message should be enabled once all non-conformant |
9692 | binaries in the toolchain have had the attributes set | |
9693 | properly. | |
ee065d83 | 9694 | _bfd_error_handler |
3895f852 | 9695 | (_("error: %B: 8-byte data alignment conflicts with %B"), |
91e22acd AS |
9696 | obfd, ibfd); |
9697 | result = FALSE; */ | |
ee065d83 | 9698 | } |
91e22acd AS |
9699 | /* Fall through. */ |
9700 | case Tag_ABI_FP_denormal: | |
9701 | case Tag_ABI_PCS_GOT_use: | |
9702 | /* Use the "greatest" from the sequence 0, 2, 1, or the largest | |
9703 | value if greater than 2 (for future-proofing). */ | |
9704 | if ((in_attr[i].i > 2 && in_attr[i].i > out_attr[i].i) | |
9705 | || (in_attr[i].i <= 2 && out_attr[i].i <= 2 | |
9706 | && order_021[in_attr[i].i] > order_021[out_attr[i].i])) | |
ee065d83 PB |
9707 | out_attr[i].i = in_attr[i].i; |
9708 | break; | |
91e22acd AS |
9709 | |
9710 | ||
9711 | case Tag_CPU_arch_profile: | |
9712 | if (out_attr[i].i != in_attr[i].i) | |
9713 | { | |
9714 | /* 0 will merge with anything. | |
9715 | 'A' and 'S' merge to 'A'. | |
9716 | 'R' and 'S' merge to 'R'. | |
9717 | 'M' and 'A|R|S' is an error. */ | |
9718 | if (out_attr[i].i == 0 | |
9719 | || (out_attr[i].i == 'S' | |
9720 | && (in_attr[i].i == 'A' || in_attr[i].i == 'R'))) | |
9721 | out_attr[i].i = in_attr[i].i; | |
9722 | else if (in_attr[i].i == 0 | |
9723 | || (in_attr[i].i == 'S' | |
9724 | && (out_attr[i].i == 'A' || out_attr[i].i == 'R'))) | |
9725 | ; /* Do nothing. */ | |
9726 | else | |
9727 | { | |
9728 | _bfd_error_handler | |
3895f852 | 9729 | (_("error: %B: Conflicting architecture profiles %c/%c"), |
91e22acd AS |
9730 | ibfd, |
9731 | in_attr[i].i ? in_attr[i].i : '0', | |
9732 | out_attr[i].i ? out_attr[i].i : '0'); | |
9733 | result = FALSE; | |
9734 | } | |
9735 | } | |
9736 | break; | |
b1cc4aeb | 9737 | case Tag_VFP_arch: |
91e22acd AS |
9738 | /* Use the "greatest" from the sequence 0, 1, 2, 4, 3, or the |
9739 | largest value if greater than 4 (for future-proofing). */ | |
9740 | if ((in_attr[i].i > 4 && in_attr[i].i > out_attr[i].i) | |
9741 | || (in_attr[i].i <= 4 && out_attr[i].i <= 4 | |
9742 | && order_01243[in_attr[i].i] > order_01243[out_attr[i].i])) | |
b1cc4aeb PB |
9743 | out_attr[i].i = in_attr[i].i; |
9744 | break; | |
ee065d83 PB |
9745 | case Tag_PCS_config: |
9746 | if (out_attr[i].i == 0) | |
9747 | out_attr[i].i = in_attr[i].i; | |
9748 | else if (in_attr[i].i != 0 && out_attr[i].i != 0) | |
9749 | { | |
9750 | /* It's sometimes ok to mix different configs, so this is only | |
9751 | a warning. */ | |
9752 | _bfd_error_handler | |
9753 | (_("Warning: %B: Conflicting platform configuration"), ibfd); | |
9754 | } | |
9755 | break; | |
9756 | case Tag_ABI_PCS_R9_use: | |
004ae526 PB |
9757 | if (in_attr[i].i != out_attr[i].i |
9758 | && out_attr[i].i != AEABI_R9_unused | |
ee065d83 PB |
9759 | && in_attr[i].i != AEABI_R9_unused) |
9760 | { | |
9761 | _bfd_error_handler | |
3895f852 | 9762 | (_("error: %B: Conflicting use of R9"), ibfd); |
91e22acd | 9763 | result = FALSE; |
ee065d83 PB |
9764 | } |
9765 | if (out_attr[i].i == AEABI_R9_unused) | |
9766 | out_attr[i].i = in_attr[i].i; | |
9767 | break; | |
9768 | case Tag_ABI_PCS_RW_data: | |
9769 | if (in_attr[i].i == AEABI_PCS_RW_data_SBrel | |
9770 | && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_SB | |
9771 | && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_unused) | |
9772 | { | |
9773 | _bfd_error_handler | |
3895f852 | 9774 | (_("error: %B: SB relative addressing conflicts with use of R9"), |
ee065d83 | 9775 | ibfd); |
91e22acd | 9776 | result = FALSE; |
ee065d83 PB |
9777 | } |
9778 | /* Use the smallest value specified. */ | |
9779 | if (in_attr[i].i < out_attr[i].i) | |
9780 | out_attr[i].i = in_attr[i].i; | |
9781 | break; | |
ee065d83 | 9782 | case Tag_ABI_PCS_wchar_t: |
a9dc9481 JM |
9783 | if (out_attr[i].i && in_attr[i].i && out_attr[i].i != in_attr[i].i |
9784 | && !elf_arm_tdata (obfd)->no_wchar_size_warning) | |
ee065d83 PB |
9785 | { |
9786 | _bfd_error_handler | |
a9dc9481 JM |
9787 | (_("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"), |
9788 | ibfd, in_attr[i].i, out_attr[i].i); | |
ee065d83 | 9789 | } |
a9dc9481 | 9790 | else if (in_attr[i].i && !out_attr[i].i) |
ee065d83 PB |
9791 | out_attr[i].i = in_attr[i].i; |
9792 | break; | |
ee065d83 PB |
9793 | case Tag_ABI_enum_size: |
9794 | if (in_attr[i].i != AEABI_enum_unused) | |
9795 | { | |
9796 | if (out_attr[i].i == AEABI_enum_unused | |
9797 | || out_attr[i].i == AEABI_enum_forced_wide) | |
9798 | { | |
9799 | /* The existing object is compatible with anything. | |
9800 | Use whatever requirements the new object has. */ | |
9801 | out_attr[i].i = in_attr[i].i; | |
9802 | } | |
9803 | else if (in_attr[i].i != AEABI_enum_forced_wide | |
bf21ed78 | 9804 | && out_attr[i].i != in_attr[i].i |
0ffa91dd | 9805 | && !elf_arm_tdata (obfd)->no_enum_size_warning) |
ee065d83 | 9806 | { |
91e22acd | 9807 | static const char *aeabi_enum_names[] = |
bf21ed78 | 9808 | { "", "variable-size", "32-bit", "" }; |
91e22acd AS |
9809 | const char *in_name = |
9810 | in_attr[i].i < ARRAY_SIZE(aeabi_enum_names) | |
9811 | ? aeabi_enum_names[in_attr[i].i] | |
9812 | : "<unknown>"; | |
9813 | const char *out_name = | |
9814 | out_attr[i].i < ARRAY_SIZE(aeabi_enum_names) | |
9815 | ? aeabi_enum_names[out_attr[i].i] | |
9816 | : "<unknown>"; | |
ee065d83 | 9817 | _bfd_error_handler |
bf21ed78 | 9818 | (_("warning: %B uses %s enums yet the output is to use %s enums; use of enum values across objects may fail"), |
91e22acd | 9819 | ibfd, in_name, out_name); |
ee065d83 PB |
9820 | } |
9821 | } | |
9822 | break; | |
9823 | case Tag_ABI_VFP_args: | |
9824 | /* Aready done. */ | |
9825 | break; | |
9826 | case Tag_ABI_WMMX_args: | |
9827 | if (in_attr[i].i != out_attr[i].i) | |
9828 | { | |
9829 | _bfd_error_handler | |
3895f852 | 9830 | (_("error: %B uses iWMMXt register arguments, %B does not"), |
ee065d83 | 9831 | ibfd, obfd); |
91e22acd | 9832 | result = FALSE; |
ee065d83 PB |
9833 | } |
9834 | break; | |
7b86a9fa AS |
9835 | case Tag_compatibility: |
9836 | /* Merged in target-independent code. */ | |
9837 | break; | |
91e22acd AS |
9838 | case Tag_ABI_HardFP_use: |
9839 | /* 1 (SP) and 2 (DP) conflict, so combine to 3 (SP & DP). */ | |
9840 | if ((in_attr[i].i == 1 && out_attr[i].i == 2) | |
9841 | || (in_attr[i].i == 2 && out_attr[i].i == 1)) | |
9842 | out_attr[i].i = 3; | |
9843 | else if (in_attr[i].i > out_attr[i].i) | |
9844 | out_attr[i].i = in_attr[i].i; | |
9845 | break; | |
9846 | case Tag_ABI_FP_16bit_format: | |
9847 | if (in_attr[i].i != 0 && out_attr[i].i != 0) | |
9848 | { | |
9849 | if (in_attr[i].i != out_attr[i].i) | |
9850 | { | |
9851 | _bfd_error_handler | |
3895f852 | 9852 | (_("error: fp16 format mismatch between %B and %B"), |
91e22acd AS |
9853 | ibfd, obfd); |
9854 | result = FALSE; | |
9855 | } | |
9856 | } | |
9857 | if (in_attr[i].i != 0) | |
9858 | out_attr[i].i = in_attr[i].i; | |
9859 | break; | |
7b86a9fa | 9860 | |
91e22acd | 9861 | case Tag_nodefaults: |
2d0bb761 AS |
9862 | /* This tag is set if it exists, but the value is unused (and is |
9863 | typically zero). We don't actually need to do anything here - | |
9864 | the merge happens automatically when the type flags are merged | |
9865 | below. */ | |
91e22acd AS |
9866 | break; |
9867 | case Tag_also_compatible_with: | |
9868 | /* Already done in Tag_CPU_arch. */ | |
9869 | break; | |
9870 | case Tag_conformance: | |
9871 | /* Keep the attribute if it matches. Throw it away otherwise. | |
9872 | No attribute means no claim to conform. */ | |
9873 | if (!in_attr[i].s || !out_attr[i].s | |
9874 | || strcmp (in_attr[i].s, out_attr[i].s) != 0) | |
9875 | out_attr[i].s = NULL; | |
9876 | break; | |
3cfad14c | 9877 | |
91e22acd | 9878 | default: |
3cfad14c | 9879 | { |
91e22acd AS |
9880 | bfd *err_bfd = NULL; |
9881 | ||
9882 | /* The "known_obj_attributes" table does contain some undefined | |
9883 | attributes. Ensure that there are unused. */ | |
9884 | if (out_attr[i].i != 0 || out_attr[i].s != NULL) | |
9885 | err_bfd = obfd; | |
9886 | else if (in_attr[i].i != 0 || in_attr[i].s != NULL) | |
9887 | err_bfd = ibfd; | |
9888 | ||
9889 | if (err_bfd != NULL) | |
9890 | { | |
9891 | /* Attribute numbers >=64 (mod 128) can be safely ignored. */ | |
9892 | if ((i & 127) < 64) | |
9893 | { | |
9894 | _bfd_error_handler | |
9895 | (_("%B: Unknown mandatory EABI object attribute %d"), | |
9896 | err_bfd, i); | |
9897 | bfd_set_error (bfd_error_bad_value); | |
9898 | result = FALSE; | |
9899 | } | |
9900 | else | |
9901 | { | |
9902 | _bfd_error_handler | |
9903 | (_("Warning: %B: Unknown EABI object attribute %d"), | |
9904 | err_bfd, i); | |
9905 | } | |
9906 | } | |
9907 | ||
9908 | /* Only pass on attributes that match in both inputs. */ | |
9909 | if (in_attr[i].i != out_attr[i].i | |
9910 | || in_attr[i].s != out_attr[i].s | |
9911 | || (in_attr[i].s != NULL && out_attr[i].s != NULL | |
9912 | && strcmp (in_attr[i].s, out_attr[i].s) != 0)) | |
9913 | { | |
9914 | out_attr[i].i = 0; | |
9915 | out_attr[i].s = NULL; | |
9916 | } | |
3cfad14c | 9917 | } |
91e22acd AS |
9918 | } |
9919 | ||
9920 | /* If out_attr was copied from in_attr then it won't have a type yet. */ | |
9921 | if (in_attr[i].type && !out_attr[i].type) | |
9922 | out_attr[i].type = in_attr[i].type; | |
ee065d83 PB |
9923 | } |
9924 | ||
104d59d1 JM |
9925 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
9926 | _bfd_elf_merge_object_attributes (ibfd, obfd); | |
ee065d83 | 9927 | |
104d59d1 JM |
9928 | /* Check for any attributes not known on ARM. */ |
9929 | in_list = elf_other_obj_attributes_proc (ibfd); | |
91e22acd AS |
9930 | out_listp = &elf_other_obj_attributes_proc (obfd); |
9931 | out_list = *out_listp; | |
8e79c3df | 9932 | |
91e22acd | 9933 | for (; in_list || out_list; ) |
ee065d83 | 9934 | { |
91e22acd AS |
9935 | bfd *err_bfd = NULL; |
9936 | int err_tag = 0; | |
8e79c3df CM |
9937 | |
9938 | /* The tags for each list are in numerical order. */ | |
9939 | /* If the tags are equal, then merge. */ | |
91e22acd | 9940 | if (out_list && (!in_list || in_list->tag > out_list->tag)) |
8e79c3df | 9941 | { |
91e22acd AS |
9942 | /* This attribute only exists in obfd. We can't merge, and we don't |
9943 | know what the tag means, so delete it. */ | |
9944 | err_bfd = obfd; | |
9945 | err_tag = out_list->tag; | |
9946 | *out_listp = out_list->next; | |
9947 | out_list = *out_listp; | |
8e79c3df | 9948 | } |
91e22acd | 9949 | else if (in_list && (!out_list || in_list->tag < out_list->tag)) |
8e79c3df | 9950 | { |
91e22acd AS |
9951 | /* This attribute only exists in ibfd. We can't merge, and we don't |
9952 | know what the tag means, so ignore it. */ | |
9953 | err_bfd = ibfd; | |
9954 | err_tag = in_list->tag; | |
8e79c3df | 9955 | in_list = in_list->next; |
eb111b1f | 9956 | } |
91e22acd AS |
9957 | else /* The tags are equal. */ |
9958 | { | |
9959 | /* As present, all attributes in the list are unknown, and | |
9960 | therefore can't be merged meaningfully. */ | |
9961 | err_bfd = obfd; | |
9962 | err_tag = out_list->tag; | |
9963 | ||
9964 | /* Only pass on attributes that match in both inputs. */ | |
9965 | if (in_list->attr.i != out_list->attr.i | |
9966 | || in_list->attr.s != out_list->attr.s | |
9967 | || (in_list->attr.s && out_list->attr.s | |
9968 | && strcmp (in_list->attr.s, out_list->attr.s) != 0)) | |
9969 | { | |
9970 | /* No match. Delete the attribute. */ | |
9971 | *out_listp = out_list->next; | |
9972 | out_list = *out_listp; | |
9973 | } | |
9974 | else | |
9975 | { | |
9976 | /* Matched. Keep the attribute and move to the next. */ | |
9977 | out_list = out_list->next; | |
9978 | in_list = in_list->next; | |
9979 | } | |
9980 | } | |
9981 | ||
9982 | if (err_bfd) | |
9983 | { | |
9984 | /* Attribute numbers >=64 (mod 128) can be safely ignored. */ | |
9985 | if ((err_tag & 127) < 64) | |
9986 | { | |
9987 | _bfd_error_handler | |
9988 | (_("%B: Unknown mandatory EABI object attribute %d"), | |
9989 | err_bfd, err_tag); | |
9990 | bfd_set_error (bfd_error_bad_value); | |
9991 | result = FALSE; | |
9992 | } | |
9993 | else | |
9994 | { | |
9995 | _bfd_error_handler | |
9996 | (_("Warning: %B: Unknown EABI object attribute %d"), | |
9997 | err_bfd, err_tag); | |
9998 | } | |
9999 | } | |
ee065d83 | 10000 | } |
91e22acd | 10001 | return result; |
252b5132 RH |
10002 | } |
10003 | ||
3a4a14e9 PB |
10004 | |
10005 | /* Return TRUE if the two EABI versions are incompatible. */ | |
10006 | ||
10007 | static bfd_boolean | |
10008 | elf32_arm_versions_compatible (unsigned iver, unsigned over) | |
10009 | { | |
10010 | /* v4 and v5 are the same spec before and after it was released, | |
10011 | so allow mixing them. */ | |
10012 | if ((iver == EF_ARM_EABI_VER4 && over == EF_ARM_EABI_VER5) | |
10013 | || (iver == EF_ARM_EABI_VER5 && over == EF_ARM_EABI_VER4)) | |
10014 | return TRUE; | |
10015 | ||
10016 | return (iver == over); | |
10017 | } | |
10018 | ||
252b5132 RH |
10019 | /* Merge backend specific data from an object file to the output |
10020 | object file when linking. */ | |
9b485d32 | 10021 | |
b34976b6 | 10022 | static bfd_boolean |
57e8b36a | 10023 | elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd) |
252b5132 RH |
10024 | { |
10025 | flagword out_flags; | |
10026 | flagword in_flags; | |
b34976b6 | 10027 | bfd_boolean flags_compatible = TRUE; |
cf919dfd | 10028 | asection *sec; |
252b5132 | 10029 | |
9b485d32 | 10030 | /* Check if we have the same endianess. */ |
82e51918 | 10031 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) |
b34976b6 | 10032 | return FALSE; |
1fe494a5 | 10033 | |
0ffa91dd | 10034 | if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd)) |
b34976b6 | 10035 | return TRUE; |
252b5132 | 10036 | |
ee065d83 PB |
10037 | if (!elf32_arm_merge_eabi_attributes (ibfd, obfd)) |
10038 | return FALSE; | |
10039 | ||
252b5132 RH |
10040 | /* The input BFD must have had its flags initialised. */ |
10041 | /* The following seems bogus to me -- The flags are initialized in | |
10042 | the assembler but I don't think an elf_flags_init field is | |
9b485d32 | 10043 | written into the object. */ |
252b5132 RH |
10044 | /* BFD_ASSERT (elf_flags_init (ibfd)); */ |
10045 | ||
10046 | in_flags = elf_elfheader (ibfd)->e_flags; | |
10047 | out_flags = elf_elfheader (obfd)->e_flags; | |
10048 | ||
23684067 PB |
10049 | /* In theory there is no reason why we couldn't handle this. However |
10050 | in practice it isn't even close to working and there is no real | |
10051 | reason to want it. */ | |
10052 | if (EF_ARM_EABI_VERSION (in_flags) >= EF_ARM_EABI_VER4 | |
c13bb2ea | 10053 | && !(ibfd->flags & DYNAMIC) |
23684067 PB |
10054 | && (in_flags & EF_ARM_BE8)) |
10055 | { | |
3895f852 | 10056 | _bfd_error_handler (_("error: %B is already in final BE8 format"), |
23684067 PB |
10057 | ibfd); |
10058 | return FALSE; | |
10059 | } | |
10060 | ||
252b5132 RH |
10061 | if (!elf_flags_init (obfd)) |
10062 | { | |
fe077fa6 NC |
10063 | /* If the input is the default architecture and had the default |
10064 | flags then do not bother setting the flags for the output | |
10065 | architecture, instead allow future merges to do this. If no | |
10066 | future merges ever set these flags then they will retain their | |
10067 | uninitialised values, which surprise surprise, correspond | |
252b5132 | 10068 | to the default values. */ |
fe077fa6 NC |
10069 | if (bfd_get_arch_info (ibfd)->the_default |
10070 | && elf_elfheader (ibfd)->e_flags == 0) | |
b34976b6 | 10071 | return TRUE; |
252b5132 | 10072 | |
b34976b6 | 10073 | elf_flags_init (obfd) = TRUE; |
252b5132 RH |
10074 | elf_elfheader (obfd)->e_flags = in_flags; |
10075 | ||
10076 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
10077 | && bfd_get_arch_info (obfd)->the_default) | |
10078 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); | |
10079 | ||
b34976b6 | 10080 | return TRUE; |
252b5132 RH |
10081 | } |
10082 | ||
5a6c6817 NC |
10083 | /* Determine what should happen if the input ARM architecture |
10084 | does not match the output ARM architecture. */ | |
10085 | if (! bfd_arm_merge_machines (ibfd, obfd)) | |
10086 | return FALSE; | |
e16bb312 | 10087 | |
1006ba19 | 10088 | /* Identical flags must be compatible. */ |
252b5132 | 10089 | if (in_flags == out_flags) |
b34976b6 | 10090 | return TRUE; |
252b5132 | 10091 | |
35a0f415 DJ |
10092 | /* Check to see if the input BFD actually contains any sections. If |
10093 | not, its flags may not have been initialised either, but it | |
8e3de13a | 10094 | cannot actually cause any incompatiblity. Do not short-circuit |
35a0f415 | 10095 | dynamic objects; their section list may be emptied by |
d1f161ea | 10096 | elf_link_add_object_symbols. |
35a0f415 | 10097 | |
d1f161ea NC |
10098 | Also check to see if there are no code sections in the input. |
10099 | In this case there is no need to check for code specific flags. | |
10100 | XXX - do we need to worry about floating-point format compatability | |
10101 | in data sections ? */ | |
35a0f415 | 10102 | if (!(ibfd->flags & DYNAMIC)) |
cf919dfd | 10103 | { |
35a0f415 | 10104 | bfd_boolean null_input_bfd = TRUE; |
d1f161ea | 10105 | bfd_boolean only_data_sections = TRUE; |
35a0f415 DJ |
10106 | |
10107 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
cf919dfd | 10108 | { |
35a0f415 DJ |
10109 | /* Ignore synthetic glue sections. */ |
10110 | if (strcmp (sec->name, ".glue_7") | |
10111 | && strcmp (sec->name, ".glue_7t")) | |
10112 | { | |
d1f161ea NC |
10113 | if ((bfd_get_section_flags (ibfd, sec) |
10114 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
10115 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
10116 | only_data_sections = FALSE; | |
10117 | ||
35a0f415 DJ |
10118 | null_input_bfd = FALSE; |
10119 | break; | |
10120 | } | |
cf919dfd | 10121 | } |
d1f161ea NC |
10122 | |
10123 | if (null_input_bfd || only_data_sections) | |
35a0f415 | 10124 | return TRUE; |
cf919dfd | 10125 | } |
cf919dfd | 10126 | |
252b5132 | 10127 | /* Complain about various flag mismatches. */ |
3a4a14e9 PB |
10128 | if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags), |
10129 | EF_ARM_EABI_VERSION (out_flags))) | |
fc830a83 | 10130 | { |
d003868e | 10131 | _bfd_error_handler |
3895f852 | 10132 | (_("error: Source object %B has EABI version %d, but target %B has EABI version %d"), |
d003868e AM |
10133 | ibfd, obfd, |
10134 | (in_flags & EF_ARM_EABIMASK) >> 24, | |
10135 | (out_flags & EF_ARM_EABIMASK) >> 24); | |
b34976b6 | 10136 | return FALSE; |
fc830a83 | 10137 | } |
252b5132 | 10138 | |
1006ba19 | 10139 | /* Not sure what needs to be checked for EABI versions >= 1. */ |
00a97672 RS |
10140 | /* VxWorks libraries do not use these flags. */ |
10141 | if (get_elf_backend_data (obfd) != &elf32_arm_vxworks_bed | |
10142 | && get_elf_backend_data (ibfd) != &elf32_arm_vxworks_bed | |
10143 | && EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN) | |
1006ba19 | 10144 | { |
fd2ec330 | 10145 | if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26)) |
1006ba19 | 10146 | { |
d003868e | 10147 | _bfd_error_handler |
3895f852 | 10148 | (_("error: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"), |
d003868e AM |
10149 | ibfd, obfd, |
10150 | in_flags & EF_ARM_APCS_26 ? 26 : 32, | |
10151 | out_flags & EF_ARM_APCS_26 ? 26 : 32); | |
b34976b6 | 10152 | flags_compatible = FALSE; |
1006ba19 | 10153 | } |
252b5132 | 10154 | |
fd2ec330 | 10155 | if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT)) |
1006ba19 | 10156 | { |
5eefb65f | 10157 | if (in_flags & EF_ARM_APCS_FLOAT) |
d003868e | 10158 | _bfd_error_handler |
3895f852 | 10159 | (_("error: %B passes floats in float registers, whereas %B passes them in integer registers"), |
d003868e | 10160 | ibfd, obfd); |
5eefb65f | 10161 | else |
d003868e | 10162 | _bfd_error_handler |
3895f852 | 10163 | (_("error: %B passes floats in integer registers, whereas %B passes them in float registers"), |
d003868e | 10164 | ibfd, obfd); |
63b0f745 | 10165 | |
b34976b6 | 10166 | flags_compatible = FALSE; |
1006ba19 | 10167 | } |
252b5132 | 10168 | |
96a846ea | 10169 | if ((in_flags & EF_ARM_VFP_FLOAT) != (out_flags & EF_ARM_VFP_FLOAT)) |
1006ba19 | 10170 | { |
96a846ea | 10171 | if (in_flags & EF_ARM_VFP_FLOAT) |
d003868e | 10172 | _bfd_error_handler |
3895f852 | 10173 | (_("error: %B uses VFP instructions, whereas %B does not"), |
d003868e | 10174 | ibfd, obfd); |
5eefb65f | 10175 | else |
d003868e | 10176 | _bfd_error_handler |
3895f852 | 10177 | (_("error: %B uses FPA instructions, whereas %B does not"), |
d003868e | 10178 | ibfd, obfd); |
fde78edd NC |
10179 | |
10180 | flags_compatible = FALSE; | |
10181 | } | |
10182 | ||
10183 | if ((in_flags & EF_ARM_MAVERICK_FLOAT) != (out_flags & EF_ARM_MAVERICK_FLOAT)) | |
10184 | { | |
10185 | if (in_flags & EF_ARM_MAVERICK_FLOAT) | |
d003868e | 10186 | _bfd_error_handler |
3895f852 | 10187 | (_("error: %B uses Maverick instructions, whereas %B does not"), |
d003868e | 10188 | ibfd, obfd); |
fde78edd | 10189 | else |
d003868e | 10190 | _bfd_error_handler |
3895f852 | 10191 | (_("error: %B does not use Maverick instructions, whereas %B does"), |
d003868e | 10192 | ibfd, obfd); |
63b0f745 | 10193 | |
b34976b6 | 10194 | flags_compatible = FALSE; |
1006ba19 | 10195 | } |
96a846ea RE |
10196 | |
10197 | #ifdef EF_ARM_SOFT_FLOAT | |
10198 | if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT)) | |
10199 | { | |
10200 | /* We can allow interworking between code that is VFP format | |
10201 | layout, and uses either soft float or integer regs for | |
10202 | passing floating point arguments and results. We already | |
10203 | know that the APCS_FLOAT flags match; similarly for VFP | |
10204 | flags. */ | |
10205 | if ((in_flags & EF_ARM_APCS_FLOAT) != 0 | |
10206 | || (in_flags & EF_ARM_VFP_FLOAT) == 0) | |
10207 | { | |
10208 | if (in_flags & EF_ARM_SOFT_FLOAT) | |
d003868e | 10209 | _bfd_error_handler |
3895f852 | 10210 | (_("error: %B uses software FP, whereas %B uses hardware FP"), |
d003868e | 10211 | ibfd, obfd); |
96a846ea | 10212 | else |
d003868e | 10213 | _bfd_error_handler |
3895f852 | 10214 | (_("error: %B uses hardware FP, whereas %B uses software FP"), |
d003868e | 10215 | ibfd, obfd); |
96a846ea | 10216 | |
b34976b6 | 10217 | flags_compatible = FALSE; |
96a846ea RE |
10218 | } |
10219 | } | |
ee43f35e | 10220 | #endif |
252b5132 | 10221 | |
1006ba19 | 10222 | /* Interworking mismatch is only a warning. */ |
fd2ec330 | 10223 | if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK)) |
8f615d07 | 10224 | { |
e3c8793a NC |
10225 | if (in_flags & EF_ARM_INTERWORK) |
10226 | { | |
d003868e AM |
10227 | _bfd_error_handler |
10228 | (_("Warning: %B supports interworking, whereas %B does not"), | |
10229 | ibfd, obfd); | |
e3c8793a NC |
10230 | } |
10231 | else | |
10232 | { | |
d003868e AM |
10233 | _bfd_error_handler |
10234 | (_("Warning: %B does not support interworking, whereas %B does"), | |
10235 | ibfd, obfd); | |
e3c8793a | 10236 | } |
8f615d07 | 10237 | } |
252b5132 | 10238 | } |
63b0f745 | 10239 | |
1006ba19 | 10240 | return flags_compatible; |
252b5132 RH |
10241 | } |
10242 | ||
9b485d32 NC |
10243 | /* Display the flags field. */ |
10244 | ||
b34976b6 | 10245 | static bfd_boolean |
57e8b36a | 10246 | elf32_arm_print_private_bfd_data (bfd *abfd, void * ptr) |
252b5132 | 10247 | { |
fc830a83 NC |
10248 | FILE * file = (FILE *) ptr; |
10249 | unsigned long flags; | |
252b5132 RH |
10250 | |
10251 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
10252 | ||
10253 | /* Print normal ELF private data. */ | |
10254 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
10255 | ||
fc830a83 | 10256 | flags = elf_elfheader (abfd)->e_flags; |
9b485d32 NC |
10257 | /* Ignore init flag - it may not be set, despite the flags field |
10258 | containing valid data. */ | |
252b5132 RH |
10259 | |
10260 | /* xgettext:c-format */ | |
9b485d32 | 10261 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); |
252b5132 | 10262 | |
fc830a83 NC |
10263 | switch (EF_ARM_EABI_VERSION (flags)) |
10264 | { | |
10265 | case EF_ARM_EABI_UNKNOWN: | |
4cc11e76 | 10266 | /* The following flag bits are GNU extensions and not part of the |
fc830a83 NC |
10267 | official ARM ELF extended ABI. Hence they are only decoded if |
10268 | the EABI version is not set. */ | |
fd2ec330 | 10269 | if (flags & EF_ARM_INTERWORK) |
9b485d32 | 10270 | fprintf (file, _(" [interworking enabled]")); |
9a5aca8c | 10271 | |
fd2ec330 | 10272 | if (flags & EF_ARM_APCS_26) |
6c571f00 | 10273 | fprintf (file, " [APCS-26]"); |
fc830a83 | 10274 | else |
6c571f00 | 10275 | fprintf (file, " [APCS-32]"); |
9a5aca8c | 10276 | |
96a846ea RE |
10277 | if (flags & EF_ARM_VFP_FLOAT) |
10278 | fprintf (file, _(" [VFP float format]")); | |
fde78edd NC |
10279 | else if (flags & EF_ARM_MAVERICK_FLOAT) |
10280 | fprintf (file, _(" [Maverick float format]")); | |
96a846ea RE |
10281 | else |
10282 | fprintf (file, _(" [FPA float format]")); | |
10283 | ||
fd2ec330 | 10284 | if (flags & EF_ARM_APCS_FLOAT) |
9b485d32 | 10285 | fprintf (file, _(" [floats passed in float registers]")); |
9a5aca8c | 10286 | |
fd2ec330 | 10287 | if (flags & EF_ARM_PIC) |
9b485d32 | 10288 | fprintf (file, _(" [position independent]")); |
fc830a83 | 10289 | |
fd2ec330 | 10290 | if (flags & EF_ARM_NEW_ABI) |
9b485d32 | 10291 | fprintf (file, _(" [new ABI]")); |
9a5aca8c | 10292 | |
fd2ec330 | 10293 | if (flags & EF_ARM_OLD_ABI) |
9b485d32 | 10294 | fprintf (file, _(" [old ABI]")); |
9a5aca8c | 10295 | |
fd2ec330 | 10296 | if (flags & EF_ARM_SOFT_FLOAT) |
9b485d32 | 10297 | fprintf (file, _(" [software FP]")); |
9a5aca8c | 10298 | |
96a846ea RE |
10299 | flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT |
10300 | | EF_ARM_PIC | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI | |
fde78edd NC |
10301 | | EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT |
10302 | | EF_ARM_MAVERICK_FLOAT); | |
fc830a83 | 10303 | break; |
9a5aca8c | 10304 | |
fc830a83 | 10305 | case EF_ARM_EABI_VER1: |
9b485d32 | 10306 | fprintf (file, _(" [Version1 EABI]")); |
9a5aca8c | 10307 | |
fc830a83 | 10308 | if (flags & EF_ARM_SYMSARESORTED) |
9b485d32 | 10309 | fprintf (file, _(" [sorted symbol table]")); |
fc830a83 | 10310 | else |
9b485d32 | 10311 | fprintf (file, _(" [unsorted symbol table]")); |
9a5aca8c | 10312 | |
fc830a83 NC |
10313 | flags &= ~ EF_ARM_SYMSARESORTED; |
10314 | break; | |
9a5aca8c | 10315 | |
fd2ec330 PB |
10316 | case EF_ARM_EABI_VER2: |
10317 | fprintf (file, _(" [Version2 EABI]")); | |
10318 | ||
10319 | if (flags & EF_ARM_SYMSARESORTED) | |
10320 | fprintf (file, _(" [sorted symbol table]")); | |
10321 | else | |
10322 | fprintf (file, _(" [unsorted symbol table]")); | |
10323 | ||
10324 | if (flags & EF_ARM_DYNSYMSUSESEGIDX) | |
10325 | fprintf (file, _(" [dynamic symbols use segment index]")); | |
10326 | ||
10327 | if (flags & EF_ARM_MAPSYMSFIRST) | |
10328 | fprintf (file, _(" [mapping symbols precede others]")); | |
10329 | ||
99e4ae17 | 10330 | flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX |
fd2ec330 PB |
10331 | | EF_ARM_MAPSYMSFIRST); |
10332 | break; | |
10333 | ||
d507cf36 PB |
10334 | case EF_ARM_EABI_VER3: |
10335 | fprintf (file, _(" [Version3 EABI]")); | |
8cb51566 PB |
10336 | break; |
10337 | ||
10338 | case EF_ARM_EABI_VER4: | |
10339 | fprintf (file, _(" [Version4 EABI]")); | |
3a4a14e9 | 10340 | goto eabi; |
d507cf36 | 10341 | |
3a4a14e9 PB |
10342 | case EF_ARM_EABI_VER5: |
10343 | fprintf (file, _(" [Version5 EABI]")); | |
10344 | eabi: | |
d507cf36 PB |
10345 | if (flags & EF_ARM_BE8) |
10346 | fprintf (file, _(" [BE8]")); | |
10347 | ||
10348 | if (flags & EF_ARM_LE8) | |
10349 | fprintf (file, _(" [LE8]")); | |
10350 | ||
10351 | flags &= ~(EF_ARM_LE8 | EF_ARM_BE8); | |
10352 | break; | |
10353 | ||
fc830a83 | 10354 | default: |
9b485d32 | 10355 | fprintf (file, _(" <EABI version unrecognised>")); |
fc830a83 NC |
10356 | break; |
10357 | } | |
252b5132 | 10358 | |
fc830a83 | 10359 | flags &= ~ EF_ARM_EABIMASK; |
252b5132 | 10360 | |
fc830a83 | 10361 | if (flags & EF_ARM_RELEXEC) |
9b485d32 | 10362 | fprintf (file, _(" [relocatable executable]")); |
252b5132 | 10363 | |
fc830a83 | 10364 | if (flags & EF_ARM_HASENTRY) |
9b485d32 | 10365 | fprintf (file, _(" [has entry point]")); |
252b5132 | 10366 | |
fc830a83 NC |
10367 | flags &= ~ (EF_ARM_RELEXEC | EF_ARM_HASENTRY); |
10368 | ||
10369 | if (flags) | |
9b485d32 | 10370 | fprintf (file, _("<Unrecognised flag bits set>")); |
9a5aca8c | 10371 | |
252b5132 RH |
10372 | fputc ('\n', file); |
10373 | ||
b34976b6 | 10374 | return TRUE; |
252b5132 RH |
10375 | } |
10376 | ||
10377 | static int | |
57e8b36a | 10378 | elf32_arm_get_symbol_type (Elf_Internal_Sym * elf_sym, int type) |
252b5132 | 10379 | { |
2f0ca46a NC |
10380 | switch (ELF_ST_TYPE (elf_sym->st_info)) |
10381 | { | |
10382 | case STT_ARM_TFUNC: | |
10383 | return ELF_ST_TYPE (elf_sym->st_info); | |
ce855c42 | 10384 | |
2f0ca46a NC |
10385 | case STT_ARM_16BIT: |
10386 | /* If the symbol is not an object, return the STT_ARM_16BIT flag. | |
10387 | This allows us to distinguish between data used by Thumb instructions | |
10388 | and non-data (which is probably code) inside Thumb regions of an | |
10389 | executable. */ | |
1a0eb693 | 10390 | if (type != STT_OBJECT && type != STT_TLS) |
2f0ca46a NC |
10391 | return ELF_ST_TYPE (elf_sym->st_info); |
10392 | break; | |
9a5aca8c | 10393 | |
ce855c42 NC |
10394 | default: |
10395 | break; | |
2f0ca46a NC |
10396 | } |
10397 | ||
10398 | return type; | |
252b5132 | 10399 | } |
f21f3fe0 | 10400 | |
252b5132 | 10401 | static asection * |
07adf181 AM |
10402 | elf32_arm_gc_mark_hook (asection *sec, |
10403 | struct bfd_link_info *info, | |
10404 | Elf_Internal_Rela *rel, | |
10405 | struct elf_link_hash_entry *h, | |
10406 | Elf_Internal_Sym *sym) | |
252b5132 RH |
10407 | { |
10408 | if (h != NULL) | |
07adf181 | 10409 | switch (ELF32_R_TYPE (rel->r_info)) |
252b5132 RH |
10410 | { |
10411 | case R_ARM_GNU_VTINHERIT: | |
10412 | case R_ARM_GNU_VTENTRY: | |
07adf181 AM |
10413 | return NULL; |
10414 | } | |
9ad5cbcf | 10415 | |
07adf181 | 10416 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
252b5132 RH |
10417 | } |
10418 | ||
780a67af NC |
10419 | /* Update the got entry reference counts for the section being removed. */ |
10420 | ||
b34976b6 | 10421 | static bfd_boolean |
ba93b8ac DJ |
10422 | elf32_arm_gc_sweep_hook (bfd * abfd, |
10423 | struct bfd_link_info * info, | |
10424 | asection * sec, | |
10425 | const Elf_Internal_Rela * relocs) | |
252b5132 | 10426 | { |
5e681ec4 PB |
10427 | Elf_Internal_Shdr *symtab_hdr; |
10428 | struct elf_link_hash_entry **sym_hashes; | |
10429 | bfd_signed_vma *local_got_refcounts; | |
10430 | const Elf_Internal_Rela *rel, *relend; | |
eb043451 PB |
10431 | struct elf32_arm_link_hash_table * globals; |
10432 | ||
7dda2462 TG |
10433 | if (info->relocatable) |
10434 | return TRUE; | |
10435 | ||
eb043451 | 10436 | globals = elf32_arm_hash_table (info); |
5e681ec4 PB |
10437 | |
10438 | elf_section_data (sec)->local_dynrel = NULL; | |
10439 | ||
0ffa91dd | 10440 | symtab_hdr = & elf_symtab_hdr (abfd); |
5e681ec4 PB |
10441 | sym_hashes = elf_sym_hashes (abfd); |
10442 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
10443 | ||
906e58ca | 10444 | check_use_blx (globals); |
bd97cb95 | 10445 | |
5e681ec4 PB |
10446 | relend = relocs + sec->reloc_count; |
10447 | for (rel = relocs; rel < relend; rel++) | |
eb043451 | 10448 | { |
3eb128b2 AM |
10449 | unsigned long r_symndx; |
10450 | struct elf_link_hash_entry *h = NULL; | |
eb043451 | 10451 | int r_type; |
5e681ec4 | 10452 | |
3eb128b2 AM |
10453 | r_symndx = ELF32_R_SYM (rel->r_info); |
10454 | if (r_symndx >= symtab_hdr->sh_info) | |
10455 | { | |
10456 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
10457 | while (h->root.type == bfd_link_hash_indirect | |
10458 | || h->root.type == bfd_link_hash_warning) | |
10459 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
10460 | } | |
10461 | ||
eb043451 | 10462 | r_type = ELF32_R_TYPE (rel->r_info); |
eb043451 | 10463 | r_type = arm_real_reloc_type (globals, r_type); |
eb043451 PB |
10464 | switch (r_type) |
10465 | { | |
10466 | case R_ARM_GOT32: | |
eb043451 | 10467 | case R_ARM_GOT_PREL: |
ba93b8ac DJ |
10468 | case R_ARM_TLS_GD32: |
10469 | case R_ARM_TLS_IE32: | |
3eb128b2 | 10470 | if (h != NULL) |
eb043451 | 10471 | { |
eb043451 PB |
10472 | if (h->got.refcount > 0) |
10473 | h->got.refcount -= 1; | |
10474 | } | |
10475 | else if (local_got_refcounts != NULL) | |
10476 | { | |
10477 | if (local_got_refcounts[r_symndx] > 0) | |
10478 | local_got_refcounts[r_symndx] -= 1; | |
10479 | } | |
10480 | break; | |
10481 | ||
ba93b8ac DJ |
10482 | case R_ARM_TLS_LDM32: |
10483 | elf32_arm_hash_table (info)->tls_ldm_got.refcount -= 1; | |
10484 | break; | |
10485 | ||
eb043451 | 10486 | case R_ARM_ABS32: |
bb224fc3 | 10487 | case R_ARM_ABS32_NOI: |
eb043451 | 10488 | case R_ARM_REL32: |
bb224fc3 | 10489 | case R_ARM_REL32_NOI: |
eb043451 PB |
10490 | case R_ARM_PC24: |
10491 | case R_ARM_PLT32: | |
5b5bb741 PB |
10492 | case R_ARM_CALL: |
10493 | case R_ARM_JUMP24: | |
eb043451 | 10494 | case R_ARM_PREL31: |
c19d1205 | 10495 | case R_ARM_THM_CALL: |
bd97cb95 DJ |
10496 | case R_ARM_THM_JUMP24: |
10497 | case R_ARM_THM_JUMP19: | |
b6895b4f PB |
10498 | case R_ARM_MOVW_ABS_NC: |
10499 | case R_ARM_MOVT_ABS: | |
10500 | case R_ARM_MOVW_PREL_NC: | |
10501 | case R_ARM_MOVT_PREL: | |
10502 | case R_ARM_THM_MOVW_ABS_NC: | |
10503 | case R_ARM_THM_MOVT_ABS: | |
10504 | case R_ARM_THM_MOVW_PREL_NC: | |
10505 | case R_ARM_THM_MOVT_PREL: | |
b7693d02 DJ |
10506 | /* Should the interworking branches be here also? */ |
10507 | ||
3eb128b2 | 10508 | if (h != NULL) |
eb043451 PB |
10509 | { |
10510 | struct elf32_arm_link_hash_entry *eh; | |
10511 | struct elf32_arm_relocs_copied **pp; | |
10512 | struct elf32_arm_relocs_copied *p; | |
5e681ec4 | 10513 | |
b7693d02 | 10514 | eh = (struct elf32_arm_link_hash_entry *) h; |
5e681ec4 | 10515 | |
eb043451 | 10516 | if (h->plt.refcount > 0) |
b7693d02 DJ |
10517 | { |
10518 | h->plt.refcount -= 1; | |
bd97cb95 DJ |
10519 | if (r_type == R_ARM_THM_CALL) |
10520 | eh->plt_maybe_thumb_refcount--; | |
10521 | ||
10522 | if (r_type == R_ARM_THM_JUMP24 | |
10523 | || r_type == R_ARM_THM_JUMP19) | |
b7693d02 DJ |
10524 | eh->plt_thumb_refcount--; |
10525 | } | |
5e681ec4 | 10526 | |
eb043451 | 10527 | if (r_type == R_ARM_ABS32 |
bb224fc3 MS |
10528 | || r_type == R_ARM_REL32 |
10529 | || r_type == R_ARM_ABS32_NOI | |
10530 | || r_type == R_ARM_REL32_NOI) | |
eb043451 | 10531 | { |
eb043451 PB |
10532 | for (pp = &eh->relocs_copied; (p = *pp) != NULL; |
10533 | pp = &p->next) | |
10534 | if (p->section == sec) | |
10535 | { | |
10536 | p->count -= 1; | |
bb224fc3 MS |
10537 | if (ELF32_R_TYPE (rel->r_info) == R_ARM_REL32 |
10538 | || ELF32_R_TYPE (rel->r_info) == R_ARM_REL32_NOI) | |
ba93b8ac | 10539 | p->pc_count -= 1; |
eb043451 PB |
10540 | if (p->count == 0) |
10541 | *pp = p->next; | |
10542 | break; | |
10543 | } | |
10544 | } | |
10545 | } | |
10546 | break; | |
5e681ec4 | 10547 | |
eb043451 PB |
10548 | default: |
10549 | break; | |
10550 | } | |
10551 | } | |
5e681ec4 | 10552 | |
b34976b6 | 10553 | return TRUE; |
252b5132 RH |
10554 | } |
10555 | ||
780a67af NC |
10556 | /* Look through the relocs for a section during the first phase. */ |
10557 | ||
b34976b6 | 10558 | static bfd_boolean |
57e8b36a NC |
10559 | elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info, |
10560 | asection *sec, const Elf_Internal_Rela *relocs) | |
252b5132 | 10561 | { |
b34976b6 AM |
10562 | Elf_Internal_Shdr *symtab_hdr; |
10563 | struct elf_link_hash_entry **sym_hashes; | |
b34976b6 AM |
10564 | const Elf_Internal_Rela *rel; |
10565 | const Elf_Internal_Rela *rel_end; | |
10566 | bfd *dynobj; | |
5e681ec4 | 10567 | asection *sreloc; |
b34976b6 | 10568 | bfd_vma *local_got_offsets; |
5e681ec4 | 10569 | struct elf32_arm_link_hash_table *htab; |
39623e12 | 10570 | bfd_boolean needs_plt; |
ce98a316 | 10571 | unsigned long nsyms; |
9a5aca8c | 10572 | |
1049f94e | 10573 | if (info->relocatable) |
b34976b6 | 10574 | return TRUE; |
9a5aca8c | 10575 | |
0ffa91dd NC |
10576 | BFD_ASSERT (is_arm_elf (abfd)); |
10577 | ||
5e681ec4 PB |
10578 | htab = elf32_arm_hash_table (info); |
10579 | sreloc = NULL; | |
9a5aca8c | 10580 | |
67687978 PB |
10581 | /* Create dynamic sections for relocatable executables so that we can |
10582 | copy relocations. */ | |
10583 | if (htab->root.is_relocatable_executable | |
10584 | && ! htab->root.dynamic_sections_created) | |
10585 | { | |
10586 | if (! _bfd_elf_link_create_dynamic_sections (abfd, info)) | |
10587 | return FALSE; | |
10588 | } | |
10589 | ||
252b5132 RH |
10590 | dynobj = elf_hash_table (info)->dynobj; |
10591 | local_got_offsets = elf_local_got_offsets (abfd); | |
f21f3fe0 | 10592 | |
0ffa91dd | 10593 | symtab_hdr = & elf_symtab_hdr (abfd); |
252b5132 | 10594 | sym_hashes = elf_sym_hashes (abfd); |
ce98a316 NC |
10595 | nsyms = NUM_SHDR_ENTRIES (symtab_hdr); |
10596 | ||
252b5132 RH |
10597 | rel_end = relocs + sec->reloc_count; |
10598 | for (rel = relocs; rel < rel_end; rel++) | |
10599 | { | |
10600 | struct elf_link_hash_entry *h; | |
b7693d02 | 10601 | struct elf32_arm_link_hash_entry *eh; |
252b5132 | 10602 | unsigned long r_symndx; |
eb043451 | 10603 | int r_type; |
9a5aca8c | 10604 | |
252b5132 | 10605 | r_symndx = ELF32_R_SYM (rel->r_info); |
eb043451 | 10606 | r_type = ELF32_R_TYPE (rel->r_info); |
eb043451 | 10607 | r_type = arm_real_reloc_type (htab, r_type); |
ba93b8ac | 10608 | |
ce98a316 NC |
10609 | if (r_symndx >= nsyms |
10610 | /* PR 9934: It is possible to have relocations that do not | |
10611 | refer to symbols, thus it is also possible to have an | |
10612 | object file containing relocations but no symbol table. */ | |
10613 | && (r_symndx > 0 || nsyms > 0)) | |
ba93b8ac DJ |
10614 | { |
10615 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd, | |
ce98a316 | 10616 | r_symndx); |
ba93b8ac DJ |
10617 | return FALSE; |
10618 | } | |
10619 | ||
ce98a316 | 10620 | if (nsyms == 0 || r_symndx < symtab_hdr->sh_info) |
252b5132 RH |
10621 | h = NULL; |
10622 | else | |
973a3492 L |
10623 | { |
10624 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
10625 | while (h->root.type == bfd_link_hash_indirect | |
10626 | || h->root.type == bfd_link_hash_warning) | |
10627 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
10628 | } | |
9a5aca8c | 10629 | |
b7693d02 DJ |
10630 | eh = (struct elf32_arm_link_hash_entry *) h; |
10631 | ||
eb043451 | 10632 | switch (r_type) |
252b5132 | 10633 | { |
5e681ec4 | 10634 | case R_ARM_GOT32: |
eb043451 | 10635 | case R_ARM_GOT_PREL: |
ba93b8ac DJ |
10636 | case R_ARM_TLS_GD32: |
10637 | case R_ARM_TLS_IE32: | |
5e681ec4 | 10638 | /* This symbol requires a global offset table entry. */ |
ba93b8ac DJ |
10639 | { |
10640 | int tls_type, old_tls_type; | |
5e681ec4 | 10641 | |
ba93b8ac DJ |
10642 | switch (r_type) |
10643 | { | |
10644 | case R_ARM_TLS_GD32: tls_type = GOT_TLS_GD; break; | |
10645 | case R_ARM_TLS_IE32: tls_type = GOT_TLS_IE; break; | |
10646 | default: tls_type = GOT_NORMAL; break; | |
10647 | } | |
252b5132 | 10648 | |
ba93b8ac DJ |
10649 | if (h != NULL) |
10650 | { | |
10651 | h->got.refcount++; | |
10652 | old_tls_type = elf32_arm_hash_entry (h)->tls_type; | |
10653 | } | |
10654 | else | |
10655 | { | |
10656 | bfd_signed_vma *local_got_refcounts; | |
10657 | ||
10658 | /* This is a global offset table entry for a local symbol. */ | |
10659 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
10660 | if (local_got_refcounts == NULL) | |
10661 | { | |
10662 | bfd_size_type size; | |
906e58ca | 10663 | |
ba93b8ac | 10664 | size = symtab_hdr->sh_info; |
906e58ca | 10665 | size *= (sizeof (bfd_signed_vma) + sizeof (char)); |
ba93b8ac DJ |
10666 | local_got_refcounts = bfd_zalloc (abfd, size); |
10667 | if (local_got_refcounts == NULL) | |
10668 | return FALSE; | |
10669 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
10670 | elf32_arm_local_got_tls_type (abfd) | |
10671 | = (char *) (local_got_refcounts + symtab_hdr->sh_info); | |
10672 | } | |
10673 | local_got_refcounts[r_symndx] += 1; | |
10674 | old_tls_type = elf32_arm_local_got_tls_type (abfd) [r_symndx]; | |
10675 | } | |
10676 | ||
10677 | /* We will already have issued an error message if there is a | |
10678 | TLS / non-TLS mismatch, based on the symbol type. We don't | |
10679 | support any linker relaxations. So just combine any TLS | |
10680 | types needed. */ | |
10681 | if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL | |
10682 | && tls_type != GOT_NORMAL) | |
10683 | tls_type |= old_tls_type; | |
10684 | ||
10685 | if (old_tls_type != tls_type) | |
10686 | { | |
10687 | if (h != NULL) | |
10688 | elf32_arm_hash_entry (h)->tls_type = tls_type; | |
10689 | else | |
10690 | elf32_arm_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
10691 | } | |
10692 | } | |
8029a119 | 10693 | /* Fall through. */ |
ba93b8ac DJ |
10694 | |
10695 | case R_ARM_TLS_LDM32: | |
10696 | if (r_type == R_ARM_TLS_LDM32) | |
10697 | htab->tls_ldm_got.refcount++; | |
8029a119 | 10698 | /* Fall through. */ |
252b5132 | 10699 | |
c19d1205 | 10700 | case R_ARM_GOTOFF32: |
5e681ec4 PB |
10701 | case R_ARM_GOTPC: |
10702 | if (htab->sgot == NULL) | |
10703 | { | |
10704 | if (htab->root.dynobj == NULL) | |
10705 | htab->root.dynobj = abfd; | |
10706 | if (!create_got_section (htab->root.dynobj, info)) | |
10707 | return FALSE; | |
10708 | } | |
252b5132 RH |
10709 | break; |
10710 | ||
00a97672 RS |
10711 | case R_ARM_ABS12: |
10712 | /* VxWorks uses dynamic R_ARM_ABS12 relocations for | |
10713 | ldr __GOTT_INDEX__ offsets. */ | |
10714 | if (!htab->vxworks_p) | |
10715 | break; | |
8029a119 | 10716 | /* Fall through. */ |
00a97672 | 10717 | |
252b5132 | 10718 | case R_ARM_PC24: |
7359ea65 | 10719 | case R_ARM_PLT32: |
5b5bb741 PB |
10720 | case R_ARM_CALL: |
10721 | case R_ARM_JUMP24: | |
eb043451 | 10722 | case R_ARM_PREL31: |
c19d1205 | 10723 | case R_ARM_THM_CALL: |
bd97cb95 DJ |
10724 | case R_ARM_THM_JUMP24: |
10725 | case R_ARM_THM_JUMP19: | |
39623e12 PB |
10726 | needs_plt = 1; |
10727 | goto normal_reloc; | |
10728 | ||
96c23d59 JM |
10729 | case R_ARM_MOVW_ABS_NC: |
10730 | case R_ARM_MOVT_ABS: | |
10731 | case R_ARM_THM_MOVW_ABS_NC: | |
10732 | case R_ARM_THM_MOVT_ABS: | |
10733 | if (info->shared) | |
10734 | { | |
10735 | (*_bfd_error_handler) | |
10736 | (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"), | |
10737 | abfd, elf32_arm_howto_table_1[r_type].name, | |
10738 | (h) ? h->root.root.string : "a local symbol"); | |
10739 | bfd_set_error (bfd_error_bad_value); | |
10740 | return FALSE; | |
10741 | } | |
10742 | ||
10743 | /* Fall through. */ | |
39623e12 PB |
10744 | case R_ARM_ABS32: |
10745 | case R_ARM_ABS32_NOI: | |
10746 | case R_ARM_REL32: | |
10747 | case R_ARM_REL32_NOI: | |
b6895b4f PB |
10748 | case R_ARM_MOVW_PREL_NC: |
10749 | case R_ARM_MOVT_PREL: | |
b6895b4f PB |
10750 | case R_ARM_THM_MOVW_PREL_NC: |
10751 | case R_ARM_THM_MOVT_PREL: | |
39623e12 PB |
10752 | needs_plt = 0; |
10753 | normal_reloc: | |
10754 | ||
b7693d02 | 10755 | /* Should the interworking branches be listed here? */ |
7359ea65 | 10756 | if (h != NULL) |
5e681ec4 PB |
10757 | { |
10758 | /* If this reloc is in a read-only section, we might | |
10759 | need a copy reloc. We can't check reliably at this | |
10760 | stage whether the section is read-only, as input | |
10761 | sections have not yet been mapped to output sections. | |
10762 | Tentatively set the flag for now, and correct in | |
10763 | adjust_dynamic_symbol. */ | |
7359ea65 | 10764 | if (!info->shared) |
f5385ebf | 10765 | h->non_got_ref = 1; |
7359ea65 | 10766 | |
5e681ec4 | 10767 | /* We may need a .plt entry if the function this reloc |
c84cd8ee DJ |
10768 | refers to is in a different object. We can't tell for |
10769 | sure yet, because something later might force the | |
10770 | symbol local. */ | |
39623e12 | 10771 | if (needs_plt) |
f5385ebf | 10772 | h->needs_plt = 1; |
4f199be3 DJ |
10773 | |
10774 | /* If we create a PLT entry, this relocation will reference | |
10775 | it, even if it's an ABS32 relocation. */ | |
10776 | h->plt.refcount += 1; | |
b7693d02 | 10777 | |
bd97cb95 DJ |
10778 | /* It's too early to use htab->use_blx here, so we have to |
10779 | record possible blx references separately from | |
10780 | relocs that definitely need a thumb stub. */ | |
10781 | ||
c19d1205 | 10782 | if (r_type == R_ARM_THM_CALL) |
bd97cb95 DJ |
10783 | eh->plt_maybe_thumb_refcount += 1; |
10784 | ||
10785 | if (r_type == R_ARM_THM_JUMP24 | |
10786 | || r_type == R_ARM_THM_JUMP19) | |
b7693d02 | 10787 | eh->plt_thumb_refcount += 1; |
5e681ec4 PB |
10788 | } |
10789 | ||
67687978 PB |
10790 | /* If we are creating a shared library or relocatable executable, |
10791 | and this is a reloc against a global symbol, or a non PC | |
10792 | relative reloc against a local symbol, then we need to copy | |
10793 | the reloc into the shared library. However, if we are linking | |
10794 | with -Bsymbolic, we do not need to copy a reloc against a | |
252b5132 RH |
10795 | global symbol which is defined in an object we are |
10796 | including in the link (i.e., DEF_REGULAR is set). At | |
10797 | this point we have not seen all the input files, so it is | |
10798 | possible that DEF_REGULAR is not set now but will be set | |
10799 | later (it is never cleared). We account for that | |
10800 | possibility below by storing information in the | |
5e681ec4 | 10801 | relocs_copied field of the hash table entry. */ |
67687978 | 10802 | if ((info->shared || htab->root.is_relocatable_executable) |
5e681ec4 | 10803 | && (sec->flags & SEC_ALLOC) != 0 |
bb224fc3 | 10804 | && ((r_type == R_ARM_ABS32 || r_type == R_ARM_ABS32_NOI) |
71a976dd DJ |
10805 | || (h != NULL && ! h->needs_plt |
10806 | && (! info->symbolic || ! h->def_regular)))) | |
252b5132 | 10807 | { |
5e681ec4 PB |
10808 | struct elf32_arm_relocs_copied *p, **head; |
10809 | ||
252b5132 RH |
10810 | /* When creating a shared object, we must copy these |
10811 | reloc types into the output file. We create a reloc | |
10812 | section in dynobj and make room for this reloc. */ | |
83bac4b0 | 10813 | if (sreloc == NULL) |
252b5132 | 10814 | { |
83bac4b0 NC |
10815 | sreloc = _bfd_elf_make_dynamic_reloc_section |
10816 | (sec, dynobj, 2, abfd, ! htab->use_rel); | |
252b5132 | 10817 | |
83bac4b0 | 10818 | if (sreloc == NULL) |
b34976b6 | 10819 | return FALSE; |
252b5132 | 10820 | |
83bac4b0 | 10821 | /* BPABI objects never have dynamic relocations mapped. */ |
a89e6478 | 10822 | if (htab->symbian_p) |
252b5132 | 10823 | { |
83bac4b0 | 10824 | flagword flags; |
5e681ec4 | 10825 | |
83bac4b0 | 10826 | flags = bfd_get_section_flags (dynobj, sreloc); |
a89e6478 | 10827 | flags &= ~(SEC_LOAD | SEC_ALLOC); |
83bac4b0 NC |
10828 | bfd_set_section_flags (dynobj, sreloc, flags); |
10829 | } | |
252b5132 RH |
10830 | } |
10831 | ||
5e681ec4 PB |
10832 | /* If this is a global symbol, we count the number of |
10833 | relocations we need for this symbol. */ | |
10834 | if (h != NULL) | |
252b5132 | 10835 | { |
5e681ec4 PB |
10836 | head = &((struct elf32_arm_link_hash_entry *) h)->relocs_copied; |
10837 | } | |
10838 | else | |
10839 | { | |
10840 | /* Track dynamic relocs needed for local syms too. | |
10841 | We really need local syms available to do this | |
10842 | easily. Oh well. */ | |
57e8b36a | 10843 | |
5e681ec4 | 10844 | asection *s; |
6edfbbad DJ |
10845 | void *vpp; |
10846 | ||
5e681ec4 PB |
10847 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, |
10848 | sec, r_symndx); | |
10849 | if (s == NULL) | |
10850 | return FALSE; | |
57e8b36a | 10851 | |
6edfbbad DJ |
10852 | vpp = &elf_section_data (s)->local_dynrel; |
10853 | head = (struct elf32_arm_relocs_copied **) vpp; | |
5e681ec4 | 10854 | } |
57e8b36a | 10855 | |
5e681ec4 PB |
10856 | p = *head; |
10857 | if (p == NULL || p->section != sec) | |
10858 | { | |
10859 | bfd_size_type amt = sizeof *p; | |
57e8b36a | 10860 | |
5e681ec4 | 10861 | p = bfd_alloc (htab->root.dynobj, amt); |
252b5132 | 10862 | if (p == NULL) |
5e681ec4 PB |
10863 | return FALSE; |
10864 | p->next = *head; | |
10865 | *head = p; | |
10866 | p->section = sec; | |
10867 | p->count = 0; | |
ba93b8ac | 10868 | p->pc_count = 0; |
252b5132 | 10869 | } |
57e8b36a | 10870 | |
bb224fc3 | 10871 | if (r_type == R_ARM_REL32 || r_type == R_ARM_REL32_NOI) |
ba93b8ac | 10872 | p->pc_count += 1; |
71a976dd | 10873 | p->count += 1; |
252b5132 RH |
10874 | } |
10875 | break; | |
10876 | ||
10877 | /* This relocation describes the C++ object vtable hierarchy. | |
10878 | Reconstruct it for later use during GC. */ | |
10879 | case R_ARM_GNU_VTINHERIT: | |
c152c796 | 10880 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 10881 | return FALSE; |
252b5132 | 10882 | break; |
9a5aca8c | 10883 | |
252b5132 RH |
10884 | /* This relocation describes which C++ vtable entries are actually |
10885 | used. Record for later use during GC. */ | |
10886 | case R_ARM_GNU_VTENTRY: | |
d17e0c6e JB |
10887 | BFD_ASSERT (h != NULL); |
10888 | if (h != NULL | |
10889 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 10890 | return FALSE; |
252b5132 RH |
10891 | break; |
10892 | } | |
10893 | } | |
f21f3fe0 | 10894 | |
b34976b6 | 10895 | return TRUE; |
252b5132 RH |
10896 | } |
10897 | ||
6a5bb875 PB |
10898 | /* Unwinding tables are not referenced directly. This pass marks them as |
10899 | required if the corresponding code section is marked. */ | |
10900 | ||
10901 | static bfd_boolean | |
906e58ca NC |
10902 | elf32_arm_gc_mark_extra_sections (struct bfd_link_info *info, |
10903 | elf_gc_mark_hook_fn gc_mark_hook) | |
6a5bb875 PB |
10904 | { |
10905 | bfd *sub; | |
10906 | Elf_Internal_Shdr **elf_shdrp; | |
10907 | bfd_boolean again; | |
10908 | ||
10909 | /* Marking EH data may cause additional code sections to be marked, | |
10910 | requiring multiple passes. */ | |
10911 | again = TRUE; | |
10912 | while (again) | |
10913 | { | |
10914 | again = FALSE; | |
10915 | for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) | |
10916 | { | |
10917 | asection *o; | |
10918 | ||
0ffa91dd | 10919 | if (! is_arm_elf (sub)) |
6a5bb875 PB |
10920 | continue; |
10921 | ||
10922 | elf_shdrp = elf_elfsections (sub); | |
10923 | for (o = sub->sections; o != NULL; o = o->next) | |
10924 | { | |
10925 | Elf_Internal_Shdr *hdr; | |
0ffa91dd | 10926 | |
6a5bb875 | 10927 | hdr = &elf_section_data (o)->this_hdr; |
4fbb74a6 AM |
10928 | if (hdr->sh_type == SHT_ARM_EXIDX |
10929 | && hdr->sh_link | |
10930 | && hdr->sh_link < elf_numsections (sub) | |
6a5bb875 PB |
10931 | && !o->gc_mark |
10932 | && elf_shdrp[hdr->sh_link]->bfd_section->gc_mark) | |
10933 | { | |
10934 | again = TRUE; | |
10935 | if (!_bfd_elf_gc_mark (info, o, gc_mark_hook)) | |
10936 | return FALSE; | |
10937 | } | |
10938 | } | |
10939 | } | |
10940 | } | |
10941 | ||
10942 | return TRUE; | |
10943 | } | |
10944 | ||
3c9458e9 NC |
10945 | /* Treat mapping symbols as special target symbols. */ |
10946 | ||
10947 | static bfd_boolean | |
10948 | elf32_arm_is_target_special_symbol (bfd * abfd ATTRIBUTE_UNUSED, asymbol * sym) | |
10949 | { | |
b0796911 PB |
10950 | return bfd_is_arm_special_symbol_name (sym->name, |
10951 | BFD_ARM_SPECIAL_SYM_TYPE_ANY); | |
3c9458e9 NC |
10952 | } |
10953 | ||
0367ecfb NC |
10954 | /* This is a copy of elf_find_function() from elf.c except that |
10955 | ARM mapping symbols are ignored when looking for function names | |
10956 | and STT_ARM_TFUNC is considered to a function type. */ | |
252b5132 | 10957 | |
0367ecfb NC |
10958 | static bfd_boolean |
10959 | arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED, | |
10960 | asection * section, | |
10961 | asymbol ** symbols, | |
10962 | bfd_vma offset, | |
10963 | const char ** filename_ptr, | |
10964 | const char ** functionname_ptr) | |
10965 | { | |
10966 | const char * filename = NULL; | |
10967 | asymbol * func = NULL; | |
10968 | bfd_vma low_func = 0; | |
10969 | asymbol ** p; | |
252b5132 RH |
10970 | |
10971 | for (p = symbols; *p != NULL; p++) | |
10972 | { | |
10973 | elf_symbol_type *q; | |
10974 | ||
10975 | q = (elf_symbol_type *) *p; | |
10976 | ||
252b5132 RH |
10977 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) |
10978 | { | |
10979 | default: | |
10980 | break; | |
10981 | case STT_FILE: | |
10982 | filename = bfd_asymbol_name (&q->symbol); | |
10983 | break; | |
252b5132 RH |
10984 | case STT_FUNC: |
10985 | case STT_ARM_TFUNC: | |
9d2da7ca | 10986 | case STT_NOTYPE: |
b0796911 | 10987 | /* Skip mapping symbols. */ |
0367ecfb | 10988 | if ((q->symbol.flags & BSF_LOCAL) |
b0796911 PB |
10989 | && bfd_is_arm_special_symbol_name (q->symbol.name, |
10990 | BFD_ARM_SPECIAL_SYM_TYPE_ANY)) | |
0367ecfb NC |
10991 | continue; |
10992 | /* Fall through. */ | |
6b40fcba | 10993 | if (bfd_get_section (&q->symbol) == section |
252b5132 RH |
10994 | && q->symbol.value >= low_func |
10995 | && q->symbol.value <= offset) | |
10996 | { | |
10997 | func = (asymbol *) q; | |
10998 | low_func = q->symbol.value; | |
10999 | } | |
11000 | break; | |
11001 | } | |
11002 | } | |
11003 | ||
11004 | if (func == NULL) | |
b34976b6 | 11005 | return FALSE; |
252b5132 | 11006 | |
0367ecfb NC |
11007 | if (filename_ptr) |
11008 | *filename_ptr = filename; | |
11009 | if (functionname_ptr) | |
11010 | *functionname_ptr = bfd_asymbol_name (func); | |
11011 | ||
11012 | return TRUE; | |
906e58ca | 11013 | } |
0367ecfb NC |
11014 | |
11015 | ||
11016 | /* Find the nearest line to a particular section and offset, for error | |
11017 | reporting. This code is a duplicate of the code in elf.c, except | |
11018 | that it uses arm_elf_find_function. */ | |
11019 | ||
11020 | static bfd_boolean | |
11021 | elf32_arm_find_nearest_line (bfd * abfd, | |
11022 | asection * section, | |
11023 | asymbol ** symbols, | |
11024 | bfd_vma offset, | |
11025 | const char ** filename_ptr, | |
11026 | const char ** functionname_ptr, | |
11027 | unsigned int * line_ptr) | |
11028 | { | |
11029 | bfd_boolean found = FALSE; | |
11030 | ||
11031 | /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */ | |
11032 | ||
11033 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
11034 | filename_ptr, functionname_ptr, | |
11035 | line_ptr, 0, | |
11036 | & elf_tdata (abfd)->dwarf2_find_line_info)) | |
11037 | { | |
11038 | if (!*functionname_ptr) | |
11039 | arm_elf_find_function (abfd, section, symbols, offset, | |
11040 | *filename_ptr ? NULL : filename_ptr, | |
11041 | functionname_ptr); | |
f21f3fe0 | 11042 | |
0367ecfb NC |
11043 | return TRUE; |
11044 | } | |
11045 | ||
11046 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
11047 | & found, filename_ptr, | |
11048 | functionname_ptr, line_ptr, | |
11049 | & elf_tdata (abfd)->line_info)) | |
11050 | return FALSE; | |
11051 | ||
11052 | if (found && (*functionname_ptr || *line_ptr)) | |
11053 | return TRUE; | |
11054 | ||
11055 | if (symbols == NULL) | |
11056 | return FALSE; | |
11057 | ||
11058 | if (! arm_elf_find_function (abfd, section, symbols, offset, | |
11059 | filename_ptr, functionname_ptr)) | |
11060 | return FALSE; | |
11061 | ||
11062 | *line_ptr = 0; | |
b34976b6 | 11063 | return TRUE; |
252b5132 RH |
11064 | } |
11065 | ||
4ab527b0 FF |
11066 | static bfd_boolean |
11067 | elf32_arm_find_inliner_info (bfd * abfd, | |
11068 | const char ** filename_ptr, | |
11069 | const char ** functionname_ptr, | |
11070 | unsigned int * line_ptr) | |
11071 | { | |
11072 | bfd_boolean found; | |
11073 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
11074 | functionname_ptr, line_ptr, | |
11075 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
11076 | return found; | |
11077 | } | |
11078 | ||
252b5132 RH |
11079 | /* Adjust a symbol defined by a dynamic object and referenced by a |
11080 | regular object. The current definition is in some section of the | |
11081 | dynamic object, but we're not including those sections. We have to | |
11082 | change the definition to something the rest of the link can | |
11083 | understand. */ | |
11084 | ||
b34976b6 | 11085 | static bfd_boolean |
57e8b36a NC |
11086 | elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info, |
11087 | struct elf_link_hash_entry * h) | |
252b5132 RH |
11088 | { |
11089 | bfd * dynobj; | |
11090 | asection * s; | |
b7693d02 | 11091 | struct elf32_arm_link_hash_entry * eh; |
67687978 | 11092 | struct elf32_arm_link_hash_table *globals; |
252b5132 | 11093 | |
67687978 | 11094 | globals = elf32_arm_hash_table (info); |
252b5132 RH |
11095 | dynobj = elf_hash_table (info)->dynobj; |
11096 | ||
11097 | /* Make sure we know what is going on here. */ | |
11098 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 11099 | && (h->needs_plt |
f6e332e6 | 11100 | || h->u.weakdef != NULL |
f5385ebf AM |
11101 | || (h->def_dynamic |
11102 | && h->ref_regular | |
11103 | && !h->def_regular))); | |
252b5132 | 11104 | |
b7693d02 DJ |
11105 | eh = (struct elf32_arm_link_hash_entry *) h; |
11106 | ||
252b5132 RH |
11107 | /* If this is a function, put it in the procedure linkage table. We |
11108 | will fill in the contents of the procedure linkage table later, | |
11109 | when we know the address of the .got section. */ | |
0f88be7a | 11110 | if (h->type == STT_FUNC || h->type == STT_ARM_TFUNC |
f5385ebf | 11111 | || h->needs_plt) |
252b5132 | 11112 | { |
5e681ec4 PB |
11113 | if (h->plt.refcount <= 0 |
11114 | || SYMBOL_CALLS_LOCAL (info, h) | |
11115 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
11116 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
11117 | { |
11118 | /* This case can occur if we saw a PLT32 reloc in an input | |
5e681ec4 PB |
11119 | file, but the symbol was never referred to by a dynamic |
11120 | object, or if all references were garbage collected. In | |
11121 | such a case, we don't actually need to build a procedure | |
11122 | linkage table, and we can just do a PC24 reloc instead. */ | |
11123 | h->plt.offset = (bfd_vma) -1; | |
b7693d02 | 11124 | eh->plt_thumb_refcount = 0; |
bd97cb95 | 11125 | eh->plt_maybe_thumb_refcount = 0; |
f5385ebf | 11126 | h->needs_plt = 0; |
252b5132 RH |
11127 | } |
11128 | ||
b34976b6 | 11129 | return TRUE; |
252b5132 | 11130 | } |
5e681ec4 | 11131 | else |
b7693d02 DJ |
11132 | { |
11133 | /* It's possible that we incorrectly decided a .plt reloc was | |
11134 | needed for an R_ARM_PC24 or similar reloc to a non-function sym | |
11135 | in check_relocs. We can't decide accurately between function | |
11136 | and non-function syms in check-relocs; Objects loaded later in | |
11137 | the link may change h->type. So fix it now. */ | |
11138 | h->plt.offset = (bfd_vma) -1; | |
11139 | eh->plt_thumb_refcount = 0; | |
bd97cb95 | 11140 | eh->plt_maybe_thumb_refcount = 0; |
b7693d02 | 11141 | } |
252b5132 RH |
11142 | |
11143 | /* If this is a weak symbol, and there is a real definition, the | |
11144 | processor independent code will have arranged for us to see the | |
11145 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 11146 | if (h->u.weakdef != NULL) |
252b5132 | 11147 | { |
f6e332e6 AM |
11148 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
11149 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
11150 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
11151 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 11152 | return TRUE; |
252b5132 RH |
11153 | } |
11154 | ||
ba93b8ac DJ |
11155 | /* If there are no non-GOT references, we do not need a copy |
11156 | relocation. */ | |
11157 | if (!h->non_got_ref) | |
11158 | return TRUE; | |
11159 | ||
252b5132 RH |
11160 | /* This is a reference to a symbol defined by a dynamic object which |
11161 | is not a function. */ | |
11162 | ||
11163 | /* If we are creating a shared library, we must presume that the | |
11164 | only references to the symbol are via the global offset table. | |
11165 | For such cases we need not do anything here; the relocations will | |
67687978 PB |
11166 | be handled correctly by relocate_section. Relocatable executables |
11167 | can reference data in shared objects directly, so we don't need to | |
11168 | do anything here. */ | |
11169 | if (info->shared || globals->root.is_relocatable_executable) | |
b34976b6 | 11170 | return TRUE; |
252b5132 | 11171 | |
909272ee AM |
11172 | if (h->size == 0) |
11173 | { | |
11174 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
11175 | h->root.root.string); | |
11176 | return TRUE; | |
11177 | } | |
11178 | ||
252b5132 RH |
11179 | /* We must allocate the symbol in our .dynbss section, which will |
11180 | become part of the .bss section of the executable. There will be | |
11181 | an entry for this symbol in the .dynsym section. The dynamic | |
11182 | object will contain position independent code, so all references | |
11183 | from the dynamic object to this symbol will go through the global | |
11184 | offset table. The dynamic linker will use the .dynsym entry to | |
11185 | determine the address it must put in the global offset table, so | |
11186 | both the dynamic object and the regular object will refer to the | |
11187 | same memory location for the variable. */ | |
252b5132 RH |
11188 | s = bfd_get_section_by_name (dynobj, ".dynbss"); |
11189 | BFD_ASSERT (s != NULL); | |
11190 | ||
11191 | /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to | |
11192 | copy the initial value out of the dynamic object and into the | |
11193 | runtime process image. We need to remember the offset into the | |
00a97672 | 11194 | .rel(a).bss section we are going to use. */ |
252b5132 RH |
11195 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
11196 | { | |
11197 | asection *srel; | |
11198 | ||
00a97672 | 11199 | srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (globals, ".bss")); |
252b5132 | 11200 | BFD_ASSERT (srel != NULL); |
00a97672 | 11201 | srel->size += RELOC_SIZE (globals); |
f5385ebf | 11202 | h->needs_copy = 1; |
252b5132 RH |
11203 | } |
11204 | ||
027297b7 | 11205 | return _bfd_elf_adjust_dynamic_copy (h, s); |
252b5132 RH |
11206 | } |
11207 | ||
5e681ec4 PB |
11208 | /* Allocate space in .plt, .got and associated reloc sections for |
11209 | dynamic relocs. */ | |
11210 | ||
11211 | static bfd_boolean | |
57e8b36a | 11212 | allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
5e681ec4 PB |
11213 | { |
11214 | struct bfd_link_info *info; | |
11215 | struct elf32_arm_link_hash_table *htab; | |
11216 | struct elf32_arm_link_hash_entry *eh; | |
11217 | struct elf32_arm_relocs_copied *p; | |
bd97cb95 | 11218 | bfd_signed_vma thumb_refs; |
5e681ec4 | 11219 | |
b7693d02 DJ |
11220 | eh = (struct elf32_arm_link_hash_entry *) h; |
11221 | ||
5e681ec4 PB |
11222 | if (h->root.type == bfd_link_hash_indirect) |
11223 | return TRUE; | |
11224 | ||
11225 | if (h->root.type == bfd_link_hash_warning) | |
11226 | /* When warning symbols are created, they **replace** the "real" | |
11227 | entry in the hash table, thus we never get to see the real | |
11228 | symbol in a hash traversal. So look at it now. */ | |
11229 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
11230 | ||
11231 | info = (struct bfd_link_info *) inf; | |
11232 | htab = elf32_arm_hash_table (info); | |
11233 | ||
11234 | if (htab->root.dynamic_sections_created | |
11235 | && h->plt.refcount > 0) | |
11236 | { | |
11237 | /* Make sure this symbol is output as a dynamic symbol. | |
11238 | Undefined weak syms won't yet be marked as dynamic. */ | |
11239 | if (h->dynindx == -1 | |
f5385ebf | 11240 | && !h->forced_local) |
5e681ec4 | 11241 | { |
c152c796 | 11242 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
11243 | return FALSE; |
11244 | } | |
11245 | ||
11246 | if (info->shared | |
7359ea65 | 11247 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
5e681ec4 PB |
11248 | { |
11249 | asection *s = htab->splt; | |
11250 | ||
11251 | /* If this is the first .plt entry, make room for the special | |
11252 | first entry. */ | |
eea6121a | 11253 | if (s->size == 0) |
e5a52504 | 11254 | s->size += htab->plt_header_size; |
5e681ec4 | 11255 | |
eea6121a | 11256 | h->plt.offset = s->size; |
5e681ec4 | 11257 | |
b7693d02 DJ |
11258 | /* If we will insert a Thumb trampoline before this PLT, leave room |
11259 | for it. */ | |
bd97cb95 DJ |
11260 | thumb_refs = eh->plt_thumb_refcount; |
11261 | if (!htab->use_blx) | |
11262 | thumb_refs += eh->plt_maybe_thumb_refcount; | |
11263 | ||
11264 | if (thumb_refs > 0) | |
b7693d02 DJ |
11265 | { |
11266 | h->plt.offset += PLT_THUMB_STUB_SIZE; | |
11267 | s->size += PLT_THUMB_STUB_SIZE; | |
11268 | } | |
11269 | ||
5e681ec4 PB |
11270 | /* If this symbol is not defined in a regular file, and we are |
11271 | not generating a shared library, then set the symbol to this | |
11272 | location in the .plt. This is required to make function | |
11273 | pointers compare as equal between the normal executable and | |
11274 | the shared library. */ | |
11275 | if (! info->shared | |
f5385ebf | 11276 | && !h->def_regular) |
5e681ec4 PB |
11277 | { |
11278 | h->root.u.def.section = s; | |
11279 | h->root.u.def.value = h->plt.offset; | |
b7693d02 DJ |
11280 | |
11281 | /* Make sure the function is not marked as Thumb, in case | |
11282 | it is the target of an ABS32 relocation, which will | |
11283 | point to the PLT entry. */ | |
11284 | if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC) | |
11285 | h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC); | |
5e681ec4 PB |
11286 | } |
11287 | ||
11288 | /* Make room for this entry. */ | |
e5a52504 | 11289 | s->size += htab->plt_entry_size; |
5e681ec4 | 11290 | |
e5a52504 | 11291 | if (!htab->symbian_p) |
b7693d02 DJ |
11292 | { |
11293 | /* We also need to make an entry in the .got.plt section, which | |
11294 | will be placed in the .got section by the linker script. */ | |
11295 | eh->plt_got_offset = htab->sgotplt->size; | |
11296 | htab->sgotplt->size += 4; | |
11297 | } | |
5e681ec4 | 11298 | |
00a97672 RS |
11299 | /* We also need to make an entry in the .rel(a).plt section. */ |
11300 | htab->srelplt->size += RELOC_SIZE (htab); | |
11301 | ||
11302 | /* VxWorks executables have a second set of relocations for | |
11303 | each PLT entry. They go in a separate relocation section, | |
11304 | which is processed by the kernel loader. */ | |
11305 | if (htab->vxworks_p && !info->shared) | |
11306 | { | |
11307 | /* There is a relocation for the initial PLT entry: | |
11308 | an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */ | |
11309 | if (h->plt.offset == htab->plt_header_size) | |
11310 | htab->srelplt2->size += RELOC_SIZE (htab); | |
11311 | ||
11312 | /* There are two extra relocations for each subsequent | |
11313 | PLT entry: an R_ARM_32 relocation for the GOT entry, | |
11314 | and an R_ARM_32 relocation for the PLT entry. */ | |
11315 | htab->srelplt2->size += RELOC_SIZE (htab) * 2; | |
11316 | } | |
5e681ec4 PB |
11317 | } |
11318 | else | |
11319 | { | |
11320 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 11321 | h->needs_plt = 0; |
5e681ec4 PB |
11322 | } |
11323 | } | |
11324 | else | |
11325 | { | |
11326 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 11327 | h->needs_plt = 0; |
5e681ec4 PB |
11328 | } |
11329 | ||
11330 | if (h->got.refcount > 0) | |
11331 | { | |
11332 | asection *s; | |
11333 | bfd_boolean dyn; | |
ba93b8ac DJ |
11334 | int tls_type = elf32_arm_hash_entry (h)->tls_type; |
11335 | int indx; | |
5e681ec4 PB |
11336 | |
11337 | /* Make sure this symbol is output as a dynamic symbol. | |
11338 | Undefined weak syms won't yet be marked as dynamic. */ | |
11339 | if (h->dynindx == -1 | |
f5385ebf | 11340 | && !h->forced_local) |
5e681ec4 | 11341 | { |
c152c796 | 11342 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
11343 | return FALSE; |
11344 | } | |
11345 | ||
e5a52504 MM |
11346 | if (!htab->symbian_p) |
11347 | { | |
11348 | s = htab->sgot; | |
11349 | h->got.offset = s->size; | |
ba93b8ac DJ |
11350 | |
11351 | if (tls_type == GOT_UNKNOWN) | |
11352 | abort (); | |
11353 | ||
11354 | if (tls_type == GOT_NORMAL) | |
11355 | /* Non-TLS symbols need one GOT slot. */ | |
11356 | s->size += 4; | |
11357 | else | |
11358 | { | |
11359 | if (tls_type & GOT_TLS_GD) | |
11360 | /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */ | |
11361 | s->size += 8; | |
11362 | if (tls_type & GOT_TLS_IE) | |
11363 | /* R_ARM_TLS_IE32 needs one GOT slot. */ | |
11364 | s->size += 4; | |
11365 | } | |
11366 | ||
e5a52504 | 11367 | dyn = htab->root.dynamic_sections_created; |
ba93b8ac DJ |
11368 | |
11369 | indx = 0; | |
11370 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
11371 | && (!info->shared | |
11372 | || !SYMBOL_REFERENCES_LOCAL (info, h))) | |
11373 | indx = h->dynindx; | |
11374 | ||
11375 | if (tls_type != GOT_NORMAL | |
11376 | && (info->shared || indx != 0) | |
11377 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
11378 | || h->root.type != bfd_link_hash_undefweak)) | |
11379 | { | |
11380 | if (tls_type & GOT_TLS_IE) | |
00a97672 | 11381 | htab->srelgot->size += RELOC_SIZE (htab); |
ba93b8ac DJ |
11382 | |
11383 | if (tls_type & GOT_TLS_GD) | |
00a97672 | 11384 | htab->srelgot->size += RELOC_SIZE (htab); |
ba93b8ac DJ |
11385 | |
11386 | if ((tls_type & GOT_TLS_GD) && indx != 0) | |
00a97672 | 11387 | htab->srelgot->size += RELOC_SIZE (htab); |
ba93b8ac DJ |
11388 | } |
11389 | else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
11390 | || h->root.type != bfd_link_hash_undefweak) | |
11391 | && (info->shared | |
11392 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
00a97672 | 11393 | htab->srelgot->size += RELOC_SIZE (htab); |
e5a52504 | 11394 | } |
5e681ec4 PB |
11395 | } |
11396 | else | |
11397 | h->got.offset = (bfd_vma) -1; | |
11398 | ||
a4fd1a8e PB |
11399 | /* Allocate stubs for exported Thumb functions on v4t. */ |
11400 | if (!htab->use_blx && h->dynindx != -1 | |
0eaedd0e | 11401 | && h->def_regular |
a4fd1a8e PB |
11402 | && ELF_ST_TYPE (h->type) == STT_ARM_TFUNC |
11403 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
11404 | { | |
11405 | struct elf_link_hash_entry * th; | |
11406 | struct bfd_link_hash_entry * bh; | |
11407 | struct elf_link_hash_entry * myh; | |
11408 | char name[1024]; | |
11409 | asection *s; | |
11410 | bh = NULL; | |
11411 | /* Create a new symbol to regist the real location of the function. */ | |
11412 | s = h->root.u.def.section; | |
906e58ca | 11413 | sprintf (name, "__real_%s", h->root.root.string); |
a4fd1a8e PB |
11414 | _bfd_generic_link_add_one_symbol (info, s->owner, |
11415 | name, BSF_GLOBAL, s, | |
11416 | h->root.u.def.value, | |
11417 | NULL, TRUE, FALSE, &bh); | |
11418 | ||
11419 | myh = (struct elf_link_hash_entry *) bh; | |
11420 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC); | |
11421 | myh->forced_local = 1; | |
11422 | eh->export_glue = myh; | |
11423 | th = record_arm_to_thumb_glue (info, h); | |
11424 | /* Point the symbol at the stub. */ | |
11425 | h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC); | |
11426 | h->root.u.def.section = th->root.u.def.section; | |
11427 | h->root.u.def.value = th->root.u.def.value & ~1; | |
11428 | } | |
11429 | ||
5e681ec4 PB |
11430 | if (eh->relocs_copied == NULL) |
11431 | return TRUE; | |
11432 | ||
11433 | /* In the shared -Bsymbolic case, discard space allocated for | |
11434 | dynamic pc-relative relocs against symbols which turn out to be | |
11435 | defined in regular objects. For the normal shared case, discard | |
11436 | space for pc-relative relocs that have become local due to symbol | |
11437 | visibility changes. */ | |
11438 | ||
67687978 | 11439 | if (info->shared || htab->root.is_relocatable_executable) |
5e681ec4 | 11440 | { |
7bdca076 | 11441 | /* The only relocs that use pc_count are R_ARM_REL32 and |
bb224fc3 MS |
11442 | R_ARM_REL32_NOI, which will appear on something like |
11443 | ".long foo - .". We want calls to protected symbols to resolve | |
11444 | directly to the function rather than going via the plt. If people | |
11445 | want function pointer comparisons to work as expected then they | |
11446 | should avoid writing assembly like ".long foo - .". */ | |
ba93b8ac DJ |
11447 | if (SYMBOL_CALLS_LOCAL (info, h)) |
11448 | { | |
11449 | struct elf32_arm_relocs_copied **pp; | |
11450 | ||
11451 | for (pp = &eh->relocs_copied; (p = *pp) != NULL; ) | |
11452 | { | |
11453 | p->count -= p->pc_count; | |
11454 | p->pc_count = 0; | |
11455 | if (p->count == 0) | |
11456 | *pp = p->next; | |
11457 | else | |
11458 | pp = &p->next; | |
11459 | } | |
11460 | } | |
11461 | ||
3348747a NS |
11462 | if (elf32_arm_hash_table (info)->vxworks_p) |
11463 | { | |
11464 | struct elf32_arm_relocs_copied **pp; | |
11465 | ||
11466 | for (pp = &eh->relocs_copied; (p = *pp) != NULL; ) | |
11467 | { | |
11468 | if (strcmp (p->section->output_section->name, ".tls_vars") == 0) | |
11469 | *pp = p->next; | |
11470 | else | |
11471 | pp = &p->next; | |
11472 | } | |
11473 | } | |
11474 | ||
ba93b8ac | 11475 | /* Also discard relocs on undefined weak syms with non-default |
7359ea65 | 11476 | visibility. */ |
22d606e9 | 11477 | if (eh->relocs_copied != NULL |
5e681ec4 | 11478 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 AM |
11479 | { |
11480 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
11481 | eh->relocs_copied = NULL; | |
11482 | ||
11483 | /* Make sure undefined weak symbols are output as a dynamic | |
11484 | symbol in PIEs. */ | |
11485 | else if (h->dynindx == -1 | |
11486 | && !h->forced_local) | |
11487 | { | |
11488 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
11489 | return FALSE; | |
11490 | } | |
11491 | } | |
11492 | ||
67687978 PB |
11493 | else if (htab->root.is_relocatable_executable && h->dynindx == -1 |
11494 | && h->root.type == bfd_link_hash_new) | |
11495 | { | |
11496 | /* Output absolute symbols so that we can create relocations | |
11497 | against them. For normal symbols we output a relocation | |
11498 | against the section that contains them. */ | |
11499 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
11500 | return FALSE; | |
11501 | } | |
11502 | ||
5e681ec4 PB |
11503 | } |
11504 | else | |
11505 | { | |
11506 | /* For the non-shared case, discard space for relocs against | |
11507 | symbols which turn out to need copy relocs or are not | |
11508 | dynamic. */ | |
11509 | ||
f5385ebf AM |
11510 | if (!h->non_got_ref |
11511 | && ((h->def_dynamic | |
11512 | && !h->def_regular) | |
5e681ec4 PB |
11513 | || (htab->root.dynamic_sections_created |
11514 | && (h->root.type == bfd_link_hash_undefweak | |
11515 | || h->root.type == bfd_link_hash_undefined)))) | |
11516 | { | |
11517 | /* Make sure this symbol is output as a dynamic symbol. | |
11518 | Undefined weak syms won't yet be marked as dynamic. */ | |
11519 | if (h->dynindx == -1 | |
f5385ebf | 11520 | && !h->forced_local) |
5e681ec4 | 11521 | { |
c152c796 | 11522 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
11523 | return FALSE; |
11524 | } | |
11525 | ||
11526 | /* If that succeeded, we know we'll be keeping all the | |
11527 | relocs. */ | |
11528 | if (h->dynindx != -1) | |
11529 | goto keep; | |
11530 | } | |
11531 | ||
11532 | eh->relocs_copied = NULL; | |
11533 | ||
11534 | keep: ; | |
11535 | } | |
11536 | ||
11537 | /* Finally, allocate space. */ | |
11538 | for (p = eh->relocs_copied; p != NULL; p = p->next) | |
11539 | { | |
11540 | asection *sreloc = elf_section_data (p->section)->sreloc; | |
00a97672 | 11541 | sreloc->size += p->count * RELOC_SIZE (htab); |
5e681ec4 PB |
11542 | } |
11543 | ||
11544 | return TRUE; | |
11545 | } | |
11546 | ||
08d1f311 DJ |
11547 | /* Find any dynamic relocs that apply to read-only sections. */ |
11548 | ||
11549 | static bfd_boolean | |
8029a119 | 11550 | elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry * h, void * inf) |
08d1f311 | 11551 | { |
8029a119 NC |
11552 | struct elf32_arm_link_hash_entry * eh; |
11553 | struct elf32_arm_relocs_copied * p; | |
08d1f311 DJ |
11554 | |
11555 | if (h->root.type == bfd_link_hash_warning) | |
11556 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
11557 | ||
11558 | eh = (struct elf32_arm_link_hash_entry *) h; | |
11559 | for (p = eh->relocs_copied; p != NULL; p = p->next) | |
11560 | { | |
11561 | asection *s = p->section; | |
11562 | ||
11563 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
11564 | { | |
11565 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
11566 | ||
11567 | info->flags |= DF_TEXTREL; | |
11568 | ||
11569 | /* Not an error, just cut short the traversal. */ | |
11570 | return FALSE; | |
11571 | } | |
11572 | } | |
11573 | return TRUE; | |
11574 | } | |
11575 | ||
d504ffc8 DJ |
11576 | void |
11577 | bfd_elf32_arm_set_byteswap_code (struct bfd_link_info *info, | |
11578 | int byteswap_code) | |
11579 | { | |
11580 | struct elf32_arm_link_hash_table *globals; | |
11581 | ||
11582 | globals = elf32_arm_hash_table (info); | |
11583 | globals->byteswap_code = byteswap_code; | |
11584 | } | |
11585 | ||
252b5132 RH |
11586 | /* Set the sizes of the dynamic sections. */ |
11587 | ||
b34976b6 | 11588 | static bfd_boolean |
57e8b36a NC |
11589 | elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED, |
11590 | struct bfd_link_info * info) | |
252b5132 RH |
11591 | { |
11592 | bfd * dynobj; | |
11593 | asection * s; | |
b34976b6 AM |
11594 | bfd_boolean plt; |
11595 | bfd_boolean relocs; | |
5e681ec4 PB |
11596 | bfd *ibfd; |
11597 | struct elf32_arm_link_hash_table *htab; | |
252b5132 | 11598 | |
5e681ec4 | 11599 | htab = elf32_arm_hash_table (info); |
252b5132 RH |
11600 | dynobj = elf_hash_table (info)->dynobj; |
11601 | BFD_ASSERT (dynobj != NULL); | |
39b41c9c | 11602 | check_use_blx (htab); |
252b5132 RH |
11603 | |
11604 | if (elf_hash_table (info)->dynamic_sections_created) | |
11605 | { | |
11606 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 11607 | if (info->executable) |
252b5132 RH |
11608 | { |
11609 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
11610 | BFD_ASSERT (s != NULL); | |
eea6121a | 11611 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
252b5132 RH |
11612 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
11613 | } | |
11614 | } | |
5e681ec4 PB |
11615 | |
11616 | /* Set up .got offsets for local syms, and space for local dynamic | |
11617 | relocs. */ | |
11618 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
252b5132 | 11619 | { |
5e681ec4 PB |
11620 | bfd_signed_vma *local_got; |
11621 | bfd_signed_vma *end_local_got; | |
11622 | char *local_tls_type; | |
11623 | bfd_size_type locsymcount; | |
11624 | Elf_Internal_Shdr *symtab_hdr; | |
11625 | asection *srel; | |
3348747a | 11626 | bfd_boolean is_vxworks = elf32_arm_hash_table (info)->vxworks_p; |
5e681ec4 | 11627 | |
0ffa91dd | 11628 | if (! is_arm_elf (ibfd)) |
5e681ec4 PB |
11629 | continue; |
11630 | ||
11631 | for (s = ibfd->sections; s != NULL; s = s->next) | |
11632 | { | |
11633 | struct elf32_arm_relocs_copied *p; | |
11634 | ||
6edfbbad | 11635 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
5e681ec4 PB |
11636 | { |
11637 | if (!bfd_is_abs_section (p->section) | |
11638 | && bfd_is_abs_section (p->section->output_section)) | |
11639 | { | |
11640 | /* Input section has been discarded, either because | |
11641 | it is a copy of a linkonce section or due to | |
11642 | linker script /DISCARD/, so we'll be discarding | |
11643 | the relocs too. */ | |
11644 | } | |
3348747a NS |
11645 | else if (is_vxworks |
11646 | && strcmp (p->section->output_section->name, | |
11647 | ".tls_vars") == 0) | |
11648 | { | |
11649 | /* Relocations in vxworks .tls_vars sections are | |
11650 | handled specially by the loader. */ | |
11651 | } | |
5e681ec4 PB |
11652 | else if (p->count != 0) |
11653 | { | |
11654 | srel = elf_section_data (p->section)->sreloc; | |
00a97672 | 11655 | srel->size += p->count * RELOC_SIZE (htab); |
5e681ec4 PB |
11656 | if ((p->section->output_section->flags & SEC_READONLY) != 0) |
11657 | info->flags |= DF_TEXTREL; | |
11658 | } | |
11659 | } | |
11660 | } | |
11661 | ||
11662 | local_got = elf_local_got_refcounts (ibfd); | |
11663 | if (!local_got) | |
11664 | continue; | |
11665 | ||
0ffa91dd | 11666 | symtab_hdr = & elf_symtab_hdr (ibfd); |
5e681ec4 PB |
11667 | locsymcount = symtab_hdr->sh_info; |
11668 | end_local_got = local_got + locsymcount; | |
ba93b8ac | 11669 | local_tls_type = elf32_arm_local_got_tls_type (ibfd); |
5e681ec4 PB |
11670 | s = htab->sgot; |
11671 | srel = htab->srelgot; | |
11672 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) | |
11673 | { | |
11674 | if (*local_got > 0) | |
11675 | { | |
eea6121a | 11676 | *local_got = s->size; |
ba93b8ac DJ |
11677 | if (*local_tls_type & GOT_TLS_GD) |
11678 | /* TLS_GD relocs need an 8-byte structure in the GOT. */ | |
11679 | s->size += 8; | |
11680 | if (*local_tls_type & GOT_TLS_IE) | |
11681 | s->size += 4; | |
11682 | if (*local_tls_type == GOT_NORMAL) | |
11683 | s->size += 4; | |
11684 | ||
11685 | if (info->shared || *local_tls_type == GOT_TLS_GD) | |
00a97672 | 11686 | srel->size += RELOC_SIZE (htab); |
5e681ec4 PB |
11687 | } |
11688 | else | |
11689 | *local_got = (bfd_vma) -1; | |
11690 | } | |
252b5132 RH |
11691 | } |
11692 | ||
ba93b8ac DJ |
11693 | if (htab->tls_ldm_got.refcount > 0) |
11694 | { | |
11695 | /* Allocate two GOT entries and one dynamic relocation (if necessary) | |
11696 | for R_ARM_TLS_LDM32 relocations. */ | |
11697 | htab->tls_ldm_got.offset = htab->sgot->size; | |
11698 | htab->sgot->size += 8; | |
11699 | if (info->shared) | |
00a97672 | 11700 | htab->srelgot->size += RELOC_SIZE (htab); |
ba93b8ac DJ |
11701 | } |
11702 | else | |
11703 | htab->tls_ldm_got.offset = -1; | |
11704 | ||
5e681ec4 PB |
11705 | /* Allocate global sym .plt and .got entries, and space for global |
11706 | sym dynamic relocs. */ | |
57e8b36a | 11707 | elf_link_hash_traverse (& htab->root, allocate_dynrelocs, info); |
252b5132 | 11708 | |
d504ffc8 DJ |
11709 | /* Here we rummage through the found bfds to collect glue information. */ |
11710 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
c7b8f16e | 11711 | { |
0ffa91dd | 11712 | if (! is_arm_elf (ibfd)) |
e44a2c9c AM |
11713 | continue; |
11714 | ||
c7b8f16e JB |
11715 | /* Initialise mapping tables for code/data. */ |
11716 | bfd_elf32_arm_init_maps (ibfd); | |
906e58ca | 11717 | |
c7b8f16e JB |
11718 | if (!bfd_elf32_arm_process_before_allocation (ibfd, info) |
11719 | || !bfd_elf32_arm_vfp11_erratum_scan (ibfd, info)) | |
11720 | /* xgettext:c-format */ | |
11721 | _bfd_error_handler (_("Errors encountered processing file %s"), | |
11722 | ibfd->filename); | |
11723 | } | |
d504ffc8 | 11724 | |
3e6b1042 DJ |
11725 | /* Allocate space for the glue sections now that we've sized them. */ |
11726 | bfd_elf32_arm_allocate_interworking_sections (info); | |
11727 | ||
252b5132 RH |
11728 | /* The check_relocs and adjust_dynamic_symbol entry points have |
11729 | determined the sizes of the various dynamic sections. Allocate | |
11730 | memory for them. */ | |
b34976b6 AM |
11731 | plt = FALSE; |
11732 | relocs = FALSE; | |
252b5132 RH |
11733 | for (s = dynobj->sections; s != NULL; s = s->next) |
11734 | { | |
11735 | const char * name; | |
252b5132 RH |
11736 | |
11737 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
11738 | continue; | |
11739 | ||
11740 | /* It's OK to base decisions on the section name, because none | |
11741 | of the dynobj section names depend upon the input files. */ | |
11742 | name = bfd_get_section_name (dynobj, s); | |
11743 | ||
24a1ba0f | 11744 | if (strcmp (name, ".plt") == 0) |
252b5132 | 11745 | { |
c456f082 AM |
11746 | /* Remember whether there is a PLT. */ |
11747 | plt = s->size != 0; | |
252b5132 | 11748 | } |
0112cd26 | 11749 | else if (CONST_STRNEQ (name, ".rel")) |
252b5132 | 11750 | { |
c456f082 | 11751 | if (s->size != 0) |
252b5132 | 11752 | { |
252b5132 | 11753 | /* Remember whether there are any reloc sections other |
00a97672 RS |
11754 | than .rel(a).plt and .rela.plt.unloaded. */ |
11755 | if (s != htab->srelplt && s != htab->srelplt2) | |
b34976b6 | 11756 | relocs = TRUE; |
252b5132 RH |
11757 | |
11758 | /* We use the reloc_count field as a counter if we need | |
11759 | to copy relocs into the output file. */ | |
11760 | s->reloc_count = 0; | |
11761 | } | |
11762 | } | |
0112cd26 | 11763 | else if (! CONST_STRNEQ (name, ".got") |
c456f082 | 11764 | && strcmp (name, ".dynbss") != 0) |
252b5132 RH |
11765 | { |
11766 | /* It's not one of our sections, so don't allocate space. */ | |
11767 | continue; | |
11768 | } | |
11769 | ||
c456f082 | 11770 | if (s->size == 0) |
252b5132 | 11771 | { |
c456f082 | 11772 | /* If we don't need this section, strip it from the |
00a97672 RS |
11773 | output file. This is mostly to handle .rel(a).bss and |
11774 | .rel(a).plt. We must create both sections in | |
c456f082 AM |
11775 | create_dynamic_sections, because they must be created |
11776 | before the linker maps input sections to output | |
11777 | sections. The linker does that before | |
11778 | adjust_dynamic_symbol is called, and it is that | |
11779 | function which decides whether anything needs to go | |
11780 | into these sections. */ | |
8423293d | 11781 | s->flags |= SEC_EXCLUDE; |
252b5132 RH |
11782 | continue; |
11783 | } | |
11784 | ||
c456f082 AM |
11785 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
11786 | continue; | |
11787 | ||
252b5132 | 11788 | /* Allocate memory for the section contents. */ |
906e58ca | 11789 | s->contents = bfd_zalloc (dynobj, s->size); |
c456f082 | 11790 | if (s->contents == NULL) |
b34976b6 | 11791 | return FALSE; |
252b5132 RH |
11792 | } |
11793 | ||
11794 | if (elf_hash_table (info)->dynamic_sections_created) | |
11795 | { | |
11796 | /* Add some entries to the .dynamic section. We fill in the | |
11797 | values later, in elf32_arm_finish_dynamic_sections, but we | |
11798 | must add the entries now so that we get the correct size for | |
11799 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
11800 | dynamic linker and used by the debugger. */ | |
dc810e39 | 11801 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 11802 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 11803 | |
8532796c | 11804 | if (info->executable) |
252b5132 | 11805 | { |
dc810e39 | 11806 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 11807 | return FALSE; |
252b5132 RH |
11808 | } |
11809 | ||
11810 | if (plt) | |
11811 | { | |
dc810e39 AM |
11812 | if ( !add_dynamic_entry (DT_PLTGOT, 0) |
11813 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
00a97672 RS |
11814 | || !add_dynamic_entry (DT_PLTREL, |
11815 | htab->use_rel ? DT_REL : DT_RELA) | |
dc810e39 | 11816 | || !add_dynamic_entry (DT_JMPREL, 0)) |
b34976b6 | 11817 | return FALSE; |
252b5132 RH |
11818 | } |
11819 | ||
11820 | if (relocs) | |
11821 | { | |
00a97672 RS |
11822 | if (htab->use_rel) |
11823 | { | |
11824 | if (!add_dynamic_entry (DT_REL, 0) | |
11825 | || !add_dynamic_entry (DT_RELSZ, 0) | |
11826 | || !add_dynamic_entry (DT_RELENT, RELOC_SIZE (htab))) | |
11827 | return FALSE; | |
11828 | } | |
11829 | else | |
11830 | { | |
11831 | if (!add_dynamic_entry (DT_RELA, 0) | |
11832 | || !add_dynamic_entry (DT_RELASZ, 0) | |
11833 | || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab))) | |
11834 | return FALSE; | |
11835 | } | |
252b5132 RH |
11836 | } |
11837 | ||
08d1f311 DJ |
11838 | /* If any dynamic relocs apply to a read-only section, |
11839 | then we need a DT_TEXTREL entry. */ | |
11840 | if ((info->flags & DF_TEXTREL) == 0) | |
8029a119 NC |
11841 | elf_link_hash_traverse (& htab->root, elf32_arm_readonly_dynrelocs, |
11842 | info); | |
08d1f311 | 11843 | |
99e4ae17 | 11844 | if ((info->flags & DF_TEXTREL) != 0) |
252b5132 | 11845 | { |
dc810e39 | 11846 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 11847 | return FALSE; |
252b5132 | 11848 | } |
7a2b07ff NS |
11849 | if (htab->vxworks_p |
11850 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) | |
11851 | return FALSE; | |
252b5132 | 11852 | } |
8532796c | 11853 | #undef add_dynamic_entry |
252b5132 | 11854 | |
b34976b6 | 11855 | return TRUE; |
252b5132 RH |
11856 | } |
11857 | ||
252b5132 RH |
11858 | /* Finish up dynamic symbol handling. We set the contents of various |
11859 | dynamic sections here. */ | |
11860 | ||
b34976b6 | 11861 | static bfd_boolean |
906e58ca NC |
11862 | elf32_arm_finish_dynamic_symbol (bfd * output_bfd, |
11863 | struct bfd_link_info * info, | |
11864 | struct elf_link_hash_entry * h, | |
11865 | Elf_Internal_Sym * sym) | |
252b5132 RH |
11866 | { |
11867 | bfd * dynobj; | |
e5a52504 | 11868 | struct elf32_arm_link_hash_table *htab; |
b7693d02 | 11869 | struct elf32_arm_link_hash_entry *eh; |
252b5132 RH |
11870 | |
11871 | dynobj = elf_hash_table (info)->dynobj; | |
e5a52504 | 11872 | htab = elf32_arm_hash_table (info); |
b7693d02 | 11873 | eh = (struct elf32_arm_link_hash_entry *) h; |
252b5132 RH |
11874 | |
11875 | if (h->plt.offset != (bfd_vma) -1) | |
11876 | { | |
11877 | asection * splt; | |
252b5132 | 11878 | asection * srel; |
e5a52504 | 11879 | bfd_byte *loc; |
24a1ba0f | 11880 | bfd_vma plt_index; |
947216bf | 11881 | Elf_Internal_Rela rel; |
252b5132 RH |
11882 | |
11883 | /* This symbol has an entry in the procedure linkage table. Set | |
11884 | it up. */ | |
11885 | ||
11886 | BFD_ASSERT (h->dynindx != -1); | |
11887 | ||
11888 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
00a97672 | 11889 | srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".plt")); |
e5a52504 | 11890 | BFD_ASSERT (splt != NULL && srel != NULL); |
252b5132 | 11891 | |
e5a52504 MM |
11892 | /* Fill in the entry in the procedure linkage table. */ |
11893 | if (htab->symbian_p) | |
11894 | { | |
906e58ca | 11895 | put_arm_insn (htab, output_bfd, |
52ab56c2 PB |
11896 | elf32_arm_symbian_plt_entry[0], |
11897 | splt->contents + h->plt.offset); | |
906e58ca | 11898 | bfd_put_32 (output_bfd, |
52ab56c2 PB |
11899 | elf32_arm_symbian_plt_entry[1], |
11900 | splt->contents + h->plt.offset + 4); | |
906e58ca | 11901 | |
e5a52504 | 11902 | /* Fill in the entry in the .rel.plt section. */ |
2a1b9a48 MM |
11903 | rel.r_offset = (splt->output_section->vma |
11904 | + splt->output_offset | |
52ab56c2 | 11905 | + h->plt.offset + 4); |
e5a52504 | 11906 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT); |
b7693d02 DJ |
11907 | |
11908 | /* Get the index in the procedure linkage table which | |
11909 | corresponds to this symbol. This is the index of this symbol | |
11910 | in all the symbols for which we are making plt entries. The | |
11911 | first entry in the procedure linkage table is reserved. */ | |
906e58ca | 11912 | plt_index = ((h->plt.offset - htab->plt_header_size) |
b7693d02 | 11913 | / htab->plt_entry_size); |
e5a52504 MM |
11914 | } |
11915 | else | |
11916 | { | |
00a97672 | 11917 | bfd_vma got_offset, got_address, plt_address; |
e5a52504 MM |
11918 | bfd_vma got_displacement; |
11919 | asection * sgot; | |
52ab56c2 | 11920 | bfd_byte * ptr; |
906e58ca | 11921 | |
e5a52504 MM |
11922 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); |
11923 | BFD_ASSERT (sgot != NULL); | |
11924 | ||
b7693d02 DJ |
11925 | /* Get the offset into the .got.plt table of the entry that |
11926 | corresponds to this function. */ | |
11927 | got_offset = eh->plt_got_offset; | |
11928 | ||
11929 | /* Get the index in the procedure linkage table which | |
11930 | corresponds to this symbol. This is the index of this symbol | |
11931 | in all the symbols for which we are making plt entries. The | |
11932 | first three entries in .got.plt are reserved; after that | |
11933 | symbols appear in the same order as in .plt. */ | |
11934 | plt_index = (got_offset - 12) / 4; | |
e5a52504 | 11935 | |
00a97672 RS |
11936 | /* Calculate the address of the GOT entry. */ |
11937 | got_address = (sgot->output_section->vma | |
11938 | + sgot->output_offset | |
11939 | + got_offset); | |
5e681ec4 | 11940 | |
00a97672 RS |
11941 | /* ...and the address of the PLT entry. */ |
11942 | plt_address = (splt->output_section->vma | |
11943 | + splt->output_offset | |
11944 | + h->plt.offset); | |
5e681ec4 | 11945 | |
52ab56c2 | 11946 | ptr = htab->splt->contents + h->plt.offset; |
00a97672 RS |
11947 | if (htab->vxworks_p && info->shared) |
11948 | { | |
11949 | unsigned int i; | |
11950 | bfd_vma val; | |
11951 | ||
52ab56c2 | 11952 | for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4) |
00a97672 RS |
11953 | { |
11954 | val = elf32_arm_vxworks_shared_plt_entry[i]; | |
11955 | if (i == 2) | |
11956 | val |= got_address - sgot->output_section->vma; | |
11957 | if (i == 5) | |
11958 | val |= plt_index * RELOC_SIZE (htab); | |
52ab56c2 PB |
11959 | if (i == 2 || i == 5) |
11960 | bfd_put_32 (output_bfd, val, ptr); | |
11961 | else | |
11962 | put_arm_insn (htab, output_bfd, val, ptr); | |
00a97672 RS |
11963 | } |
11964 | } | |
11965 | else if (htab->vxworks_p) | |
b7693d02 | 11966 | { |
00a97672 RS |
11967 | unsigned int i; |
11968 | bfd_vma val; | |
11969 | ||
d3753b85 | 11970 | for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4) |
00a97672 RS |
11971 | { |
11972 | val = elf32_arm_vxworks_exec_plt_entry[i]; | |
11973 | if (i == 2) | |
11974 | val |= got_address; | |
11975 | if (i == 4) | |
11976 | val |= 0xffffff & -((h->plt.offset + i * 4 + 8) >> 2); | |
11977 | if (i == 5) | |
11978 | val |= plt_index * RELOC_SIZE (htab); | |
52ab56c2 PB |
11979 | if (i == 2 || i == 5) |
11980 | bfd_put_32 (output_bfd, val, ptr); | |
11981 | else | |
11982 | put_arm_insn (htab, output_bfd, val, ptr); | |
00a97672 RS |
11983 | } |
11984 | ||
11985 | loc = (htab->srelplt2->contents | |
11986 | + (plt_index * 2 + 1) * RELOC_SIZE (htab)); | |
11987 | ||
11988 | /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation | |
11989 | referencing the GOT for this PLT entry. */ | |
11990 | rel.r_offset = plt_address + 8; | |
11991 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); | |
11992 | rel.r_addend = got_offset; | |
11993 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
11994 | loc += RELOC_SIZE (htab); | |
11995 | ||
11996 | /* Create the R_ARM_ABS32 relocation referencing the | |
11997 | beginning of the PLT for this GOT entry. */ | |
11998 | rel.r_offset = got_address; | |
11999 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32); | |
12000 | rel.r_addend = 0; | |
12001 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
b7693d02 | 12002 | } |
00a97672 RS |
12003 | else |
12004 | { | |
bd97cb95 | 12005 | bfd_signed_vma thumb_refs; |
00a97672 RS |
12006 | /* Calculate the displacement between the PLT slot and the |
12007 | entry in the GOT. The eight-byte offset accounts for the | |
12008 | value produced by adding to pc in the first instruction | |
12009 | of the PLT stub. */ | |
12010 | got_displacement = got_address - (plt_address + 8); | |
b7693d02 | 12011 | |
00a97672 RS |
12012 | BFD_ASSERT ((got_displacement & 0xf0000000) == 0); |
12013 | ||
bd97cb95 DJ |
12014 | thumb_refs = eh->plt_thumb_refcount; |
12015 | if (!htab->use_blx) | |
12016 | thumb_refs += eh->plt_maybe_thumb_refcount; | |
12017 | ||
12018 | if (thumb_refs > 0) | |
00a97672 | 12019 | { |
52ab56c2 PB |
12020 | put_thumb_insn (htab, output_bfd, |
12021 | elf32_arm_plt_thumb_stub[0], ptr - 4); | |
12022 | put_thumb_insn (htab, output_bfd, | |
12023 | elf32_arm_plt_thumb_stub[1], ptr - 2); | |
00a97672 RS |
12024 | } |
12025 | ||
52ab56c2 PB |
12026 | put_arm_insn (htab, output_bfd, |
12027 | elf32_arm_plt_entry[0] | |
12028 | | ((got_displacement & 0x0ff00000) >> 20), | |
12029 | ptr + 0); | |
12030 | put_arm_insn (htab, output_bfd, | |
12031 | elf32_arm_plt_entry[1] | |
12032 | | ((got_displacement & 0x000ff000) >> 12), | |
12033 | ptr+ 4); | |
12034 | put_arm_insn (htab, output_bfd, | |
12035 | elf32_arm_plt_entry[2] | |
12036 | | (got_displacement & 0x00000fff), | |
12037 | ptr + 8); | |
5e681ec4 | 12038 | #ifdef FOUR_WORD_PLT |
52ab56c2 | 12039 | bfd_put_32 (output_bfd, elf32_arm_plt_entry[3], ptr + 12); |
5e681ec4 | 12040 | #endif |
00a97672 | 12041 | } |
252b5132 | 12042 | |
e5a52504 MM |
12043 | /* Fill in the entry in the global offset table. */ |
12044 | bfd_put_32 (output_bfd, | |
12045 | (splt->output_section->vma | |
12046 | + splt->output_offset), | |
12047 | sgot->contents + got_offset); | |
906e58ca | 12048 | |
00a97672 RS |
12049 | /* Fill in the entry in the .rel(a).plt section. */ |
12050 | rel.r_addend = 0; | |
12051 | rel.r_offset = got_address; | |
e5a52504 MM |
12052 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_JUMP_SLOT); |
12053 | } | |
57e8b36a | 12054 | |
00a97672 RS |
12055 | loc = srel->contents + plt_index * RELOC_SIZE (htab); |
12056 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
252b5132 | 12057 | |
f5385ebf | 12058 | if (!h->def_regular) |
252b5132 RH |
12059 | { |
12060 | /* Mark the symbol as undefined, rather than as defined in | |
12061 | the .plt section. Leave the value alone. */ | |
12062 | sym->st_shndx = SHN_UNDEF; | |
d982ba73 PB |
12063 | /* If the symbol is weak, we do need to clear the value. |
12064 | Otherwise, the PLT entry would provide a definition for | |
12065 | the symbol even if the symbol wasn't defined anywhere, | |
12066 | and so the symbol would never be NULL. */ | |
f5385ebf | 12067 | if (!h->ref_regular_nonweak) |
d982ba73 | 12068 | sym->st_value = 0; |
252b5132 RH |
12069 | } |
12070 | } | |
12071 | ||
ba93b8ac DJ |
12072 | if (h->got.offset != (bfd_vma) -1 |
12073 | && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_GD) == 0 | |
12074 | && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_IE) == 0) | |
252b5132 RH |
12075 | { |
12076 | asection * sgot; | |
12077 | asection * srel; | |
947216bf AM |
12078 | Elf_Internal_Rela rel; |
12079 | bfd_byte *loc; | |
00a97672 | 12080 | bfd_vma offset; |
252b5132 RH |
12081 | |
12082 | /* This symbol has an entry in the global offset table. Set it | |
12083 | up. */ | |
252b5132 | 12084 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
00a97672 | 12085 | srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".got")); |
252b5132 RH |
12086 | BFD_ASSERT (sgot != NULL && srel != NULL); |
12087 | ||
00a97672 RS |
12088 | offset = (h->got.offset & ~(bfd_vma) 1); |
12089 | rel.r_addend = 0; | |
252b5132 RH |
12090 | rel.r_offset = (sgot->output_section->vma |
12091 | + sgot->output_offset | |
00a97672 | 12092 | + offset); |
252b5132 | 12093 | |
5e681ec4 PB |
12094 | /* If this is a static link, or it is a -Bsymbolic link and the |
12095 | symbol is defined locally or was forced to be local because | |
12096 | of a version file, we just want to emit a RELATIVE reloc. | |
12097 | The entry in the global offset table will already have been | |
12098 | initialized in the relocate_section function. */ | |
252b5132 | 12099 | if (info->shared |
5e681ec4 PB |
12100 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
12101 | { | |
906e58ca | 12102 | BFD_ASSERT ((h->got.offset & 1) != 0); |
5e681ec4 | 12103 | rel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); |
00a97672 RS |
12104 | if (!htab->use_rel) |
12105 | { | |
12106 | rel.r_addend = bfd_get_32 (output_bfd, sgot->contents + offset); | |
12107 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset); | |
12108 | } | |
5e681ec4 | 12109 | } |
252b5132 RH |
12110 | else |
12111 | { | |
906e58ca | 12112 | BFD_ASSERT ((h->got.offset & 1) == 0); |
00a97672 | 12113 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset); |
252b5132 RH |
12114 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT); |
12115 | } | |
12116 | ||
00a97672 RS |
12117 | loc = srel->contents + srel->reloc_count++ * RELOC_SIZE (htab); |
12118 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
252b5132 RH |
12119 | } |
12120 | ||
f5385ebf | 12121 | if (h->needs_copy) |
252b5132 RH |
12122 | { |
12123 | asection * s; | |
947216bf AM |
12124 | Elf_Internal_Rela rel; |
12125 | bfd_byte *loc; | |
252b5132 RH |
12126 | |
12127 | /* This symbol needs a copy reloc. Set it up. */ | |
252b5132 RH |
12128 | BFD_ASSERT (h->dynindx != -1 |
12129 | && (h->root.type == bfd_link_hash_defined | |
12130 | || h->root.type == bfd_link_hash_defweak)); | |
12131 | ||
12132 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
00a97672 | 12133 | RELOC_SECTION (htab, ".bss")); |
252b5132 RH |
12134 | BFD_ASSERT (s != NULL); |
12135 | ||
00a97672 | 12136 | rel.r_addend = 0; |
252b5132 RH |
12137 | rel.r_offset = (h->root.u.def.value |
12138 | + h->root.u.def.section->output_section->vma | |
12139 | + h->root.u.def.section->output_offset); | |
12140 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY); | |
00a97672 RS |
12141 | loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab); |
12142 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
252b5132 RH |
12143 | } |
12144 | ||
00a97672 RS |
12145 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks, |
12146 | the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative | |
12147 | to the ".got" section. */ | |
252b5132 | 12148 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 |
00a97672 | 12149 | || (!htab->vxworks_p && h == htab->root.hgot)) |
252b5132 RH |
12150 | sym->st_shndx = SHN_ABS; |
12151 | ||
b34976b6 | 12152 | return TRUE; |
252b5132 RH |
12153 | } |
12154 | ||
12155 | /* Finish up the dynamic sections. */ | |
12156 | ||
b34976b6 | 12157 | static bfd_boolean |
57e8b36a | 12158 | elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info) |
252b5132 RH |
12159 | { |
12160 | bfd * dynobj; | |
12161 | asection * sgot; | |
12162 | asection * sdyn; | |
12163 | ||
12164 | dynobj = elf_hash_table (info)->dynobj; | |
12165 | ||
12166 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
229fcec5 | 12167 | BFD_ASSERT (elf32_arm_hash_table (info)->symbian_p || sgot != NULL); |
252b5132 RH |
12168 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
12169 | ||
12170 | if (elf_hash_table (info)->dynamic_sections_created) | |
12171 | { | |
12172 | asection *splt; | |
12173 | Elf32_External_Dyn *dyncon, *dynconend; | |
229fcec5 | 12174 | struct elf32_arm_link_hash_table *htab; |
252b5132 | 12175 | |
229fcec5 | 12176 | htab = elf32_arm_hash_table (info); |
252b5132 | 12177 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
24a1ba0f | 12178 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
252b5132 RH |
12179 | |
12180 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 12181 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
9b485d32 | 12182 | |
252b5132 RH |
12183 | for (; dyncon < dynconend; dyncon++) |
12184 | { | |
12185 | Elf_Internal_Dyn dyn; | |
12186 | const char * name; | |
12187 | asection * s; | |
12188 | ||
12189 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
12190 | ||
12191 | switch (dyn.d_tag) | |
12192 | { | |
229fcec5 MM |
12193 | unsigned int type; |
12194 | ||
252b5132 | 12195 | default: |
7a2b07ff NS |
12196 | if (htab->vxworks_p |
12197 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
12198 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
252b5132 RH |
12199 | break; |
12200 | ||
229fcec5 MM |
12201 | case DT_HASH: |
12202 | name = ".hash"; | |
12203 | goto get_vma_if_bpabi; | |
12204 | case DT_STRTAB: | |
12205 | name = ".dynstr"; | |
12206 | goto get_vma_if_bpabi; | |
12207 | case DT_SYMTAB: | |
12208 | name = ".dynsym"; | |
12209 | goto get_vma_if_bpabi; | |
c0042f5d MM |
12210 | case DT_VERSYM: |
12211 | name = ".gnu.version"; | |
12212 | goto get_vma_if_bpabi; | |
12213 | case DT_VERDEF: | |
12214 | name = ".gnu.version_d"; | |
12215 | goto get_vma_if_bpabi; | |
12216 | case DT_VERNEED: | |
12217 | name = ".gnu.version_r"; | |
12218 | goto get_vma_if_bpabi; | |
12219 | ||
252b5132 RH |
12220 | case DT_PLTGOT: |
12221 | name = ".got"; | |
12222 | goto get_vma; | |
12223 | case DT_JMPREL: | |
00a97672 | 12224 | name = RELOC_SECTION (htab, ".plt"); |
252b5132 RH |
12225 | get_vma: |
12226 | s = bfd_get_section_by_name (output_bfd, name); | |
12227 | BFD_ASSERT (s != NULL); | |
229fcec5 MM |
12228 | if (!htab->symbian_p) |
12229 | dyn.d_un.d_ptr = s->vma; | |
12230 | else | |
12231 | /* In the BPABI, tags in the PT_DYNAMIC section point | |
12232 | at the file offset, not the memory address, for the | |
12233 | convenience of the post linker. */ | |
12234 | dyn.d_un.d_ptr = s->filepos; | |
252b5132 RH |
12235 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
12236 | break; | |
12237 | ||
229fcec5 MM |
12238 | get_vma_if_bpabi: |
12239 | if (htab->symbian_p) | |
12240 | goto get_vma; | |
12241 | break; | |
12242 | ||
252b5132 | 12243 | case DT_PLTRELSZ: |
00a97672 RS |
12244 | s = bfd_get_section_by_name (output_bfd, |
12245 | RELOC_SECTION (htab, ".plt")); | |
252b5132 | 12246 | BFD_ASSERT (s != NULL); |
eea6121a | 12247 | dyn.d_un.d_val = s->size; |
252b5132 RH |
12248 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
12249 | break; | |
906e58ca | 12250 | |
252b5132 | 12251 | case DT_RELSZ: |
00a97672 | 12252 | case DT_RELASZ: |
229fcec5 MM |
12253 | if (!htab->symbian_p) |
12254 | { | |
12255 | /* My reading of the SVR4 ABI indicates that the | |
12256 | procedure linkage table relocs (DT_JMPREL) should be | |
12257 | included in the overall relocs (DT_REL). This is | |
12258 | what Solaris does. However, UnixWare can not handle | |
12259 | that case. Therefore, we override the DT_RELSZ entry | |
12260 | here to make it not include the JMPREL relocs. Since | |
00a97672 | 12261 | the linker script arranges for .rel(a).plt to follow all |
229fcec5 MM |
12262 | other relocation sections, we don't have to worry |
12263 | about changing the DT_REL entry. */ | |
00a97672 RS |
12264 | s = bfd_get_section_by_name (output_bfd, |
12265 | RELOC_SECTION (htab, ".plt")); | |
229fcec5 MM |
12266 | if (s != NULL) |
12267 | dyn.d_un.d_val -= s->size; | |
12268 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
12269 | break; | |
12270 | } | |
8029a119 | 12271 | /* Fall through. */ |
229fcec5 MM |
12272 | |
12273 | case DT_REL: | |
12274 | case DT_RELA: | |
229fcec5 MM |
12275 | /* In the BPABI, the DT_REL tag must point at the file |
12276 | offset, not the VMA, of the first relocation | |
12277 | section. So, we use code similar to that in | |
12278 | elflink.c, but do not check for SHF_ALLOC on the | |
12279 | relcoation section, since relocations sections are | |
12280 | never allocated under the BPABI. The comments above | |
12281 | about Unixware notwithstanding, we include all of the | |
12282 | relocations here. */ | |
12283 | if (htab->symbian_p) | |
12284 | { | |
12285 | unsigned int i; | |
12286 | type = ((dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ) | |
12287 | ? SHT_REL : SHT_RELA); | |
12288 | dyn.d_un.d_val = 0; | |
12289 | for (i = 1; i < elf_numsections (output_bfd); i++) | |
12290 | { | |
906e58ca | 12291 | Elf_Internal_Shdr *hdr |
229fcec5 MM |
12292 | = elf_elfsections (output_bfd)[i]; |
12293 | if (hdr->sh_type == type) | |
12294 | { | |
906e58ca | 12295 | if (dyn.d_tag == DT_RELSZ |
229fcec5 MM |
12296 | || dyn.d_tag == DT_RELASZ) |
12297 | dyn.d_un.d_val += hdr->sh_size; | |
de52dba4 AM |
12298 | else if ((ufile_ptr) hdr->sh_offset |
12299 | <= dyn.d_un.d_val - 1) | |
229fcec5 MM |
12300 | dyn.d_un.d_val = hdr->sh_offset; |
12301 | } | |
12302 | } | |
12303 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
12304 | } | |
252b5132 | 12305 | break; |
88f7bcd5 NC |
12306 | |
12307 | /* Set the bottom bit of DT_INIT/FINI if the | |
12308 | corresponding function is Thumb. */ | |
12309 | case DT_INIT: | |
12310 | name = info->init_function; | |
12311 | goto get_sym; | |
12312 | case DT_FINI: | |
12313 | name = info->fini_function; | |
12314 | get_sym: | |
12315 | /* If it wasn't set by elf_bfd_final_link | |
4cc11e76 | 12316 | then there is nothing to adjust. */ |
88f7bcd5 NC |
12317 | if (dyn.d_un.d_val != 0) |
12318 | { | |
12319 | struct elf_link_hash_entry * eh; | |
12320 | ||
12321 | eh = elf_link_hash_lookup (elf_hash_table (info), name, | |
b34976b6 | 12322 | FALSE, FALSE, TRUE); |
906e58ca | 12323 | if (eh != NULL |
88f7bcd5 NC |
12324 | && ELF_ST_TYPE (eh->type) == STT_ARM_TFUNC) |
12325 | { | |
12326 | dyn.d_un.d_val |= 1; | |
b34976b6 | 12327 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
88f7bcd5 NC |
12328 | } |
12329 | } | |
12330 | break; | |
252b5132 RH |
12331 | } |
12332 | } | |
12333 | ||
24a1ba0f | 12334 | /* Fill in the first entry in the procedure linkage table. */ |
e5a52504 | 12335 | if (splt->size > 0 && elf32_arm_hash_table (info)->plt_header_size) |
f7a74f8c | 12336 | { |
00a97672 RS |
12337 | const bfd_vma *plt0_entry; |
12338 | bfd_vma got_address, plt_address, got_displacement; | |
12339 | ||
12340 | /* Calculate the addresses of the GOT and PLT. */ | |
12341 | got_address = sgot->output_section->vma + sgot->output_offset; | |
12342 | plt_address = splt->output_section->vma + splt->output_offset; | |
12343 | ||
12344 | if (htab->vxworks_p) | |
12345 | { | |
12346 | /* The VxWorks GOT is relocated by the dynamic linker. | |
12347 | Therefore, we must emit relocations rather than simply | |
12348 | computing the values now. */ | |
12349 | Elf_Internal_Rela rel; | |
12350 | ||
12351 | plt0_entry = elf32_arm_vxworks_exec_plt0_entry; | |
52ab56c2 PB |
12352 | put_arm_insn (htab, output_bfd, plt0_entry[0], |
12353 | splt->contents + 0); | |
12354 | put_arm_insn (htab, output_bfd, plt0_entry[1], | |
12355 | splt->contents + 4); | |
12356 | put_arm_insn (htab, output_bfd, plt0_entry[2], | |
12357 | splt->contents + 8); | |
00a97672 RS |
12358 | bfd_put_32 (output_bfd, got_address, splt->contents + 12); |
12359 | ||
8029a119 | 12360 | /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */ |
00a97672 RS |
12361 | rel.r_offset = plt_address + 12; |
12362 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); | |
12363 | rel.r_addend = 0; | |
12364 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, | |
12365 | htab->srelplt2->contents); | |
12366 | } | |
12367 | else | |
12368 | { | |
12369 | got_displacement = got_address - (plt_address + 16); | |
12370 | ||
12371 | plt0_entry = elf32_arm_plt0_entry; | |
52ab56c2 PB |
12372 | put_arm_insn (htab, output_bfd, plt0_entry[0], |
12373 | splt->contents + 0); | |
12374 | put_arm_insn (htab, output_bfd, plt0_entry[1], | |
12375 | splt->contents + 4); | |
12376 | put_arm_insn (htab, output_bfd, plt0_entry[2], | |
12377 | splt->contents + 8); | |
12378 | put_arm_insn (htab, output_bfd, plt0_entry[3], | |
12379 | splt->contents + 12); | |
5e681ec4 | 12380 | |
5e681ec4 | 12381 | #ifdef FOUR_WORD_PLT |
00a97672 RS |
12382 | /* The displacement value goes in the otherwise-unused |
12383 | last word of the second entry. */ | |
12384 | bfd_put_32 (output_bfd, got_displacement, splt->contents + 28); | |
5e681ec4 | 12385 | #else |
00a97672 | 12386 | bfd_put_32 (output_bfd, got_displacement, splt->contents + 16); |
5e681ec4 | 12387 | #endif |
00a97672 | 12388 | } |
f7a74f8c | 12389 | } |
252b5132 RH |
12390 | |
12391 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
12392 | really seem like the right value. */ | |
74541ad4 AM |
12393 | if (splt->output_section->owner == output_bfd) |
12394 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; | |
00a97672 RS |
12395 | |
12396 | if (htab->vxworks_p && !info->shared && htab->splt->size > 0) | |
12397 | { | |
12398 | /* Correct the .rel(a).plt.unloaded relocations. They will have | |
12399 | incorrect symbol indexes. */ | |
12400 | int num_plts; | |
eed62c48 | 12401 | unsigned char *p; |
00a97672 RS |
12402 | |
12403 | num_plts = ((htab->splt->size - htab->plt_header_size) | |
12404 | / htab->plt_entry_size); | |
12405 | p = htab->srelplt2->contents + RELOC_SIZE (htab); | |
12406 | ||
12407 | for (; num_plts; num_plts--) | |
12408 | { | |
12409 | Elf_Internal_Rela rel; | |
12410 | ||
12411 | SWAP_RELOC_IN (htab) (output_bfd, p, &rel); | |
12412 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); | |
12413 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, p); | |
12414 | p += RELOC_SIZE (htab); | |
12415 | ||
12416 | SWAP_RELOC_IN (htab) (output_bfd, p, &rel); | |
12417 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32); | |
12418 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, p); | |
12419 | p += RELOC_SIZE (htab); | |
12420 | } | |
12421 | } | |
252b5132 RH |
12422 | } |
12423 | ||
12424 | /* Fill in the first three entries in the global offset table. */ | |
229fcec5 | 12425 | if (sgot) |
252b5132 | 12426 | { |
229fcec5 MM |
12427 | if (sgot->size > 0) |
12428 | { | |
12429 | if (sdyn == NULL) | |
12430 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
12431 | else | |
12432 | bfd_put_32 (output_bfd, | |
12433 | sdyn->output_section->vma + sdyn->output_offset, | |
12434 | sgot->contents); | |
12435 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
12436 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
12437 | } | |
252b5132 | 12438 | |
229fcec5 MM |
12439 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; |
12440 | } | |
252b5132 | 12441 | |
b34976b6 | 12442 | return TRUE; |
252b5132 RH |
12443 | } |
12444 | ||
ba96a88f | 12445 | static void |
57e8b36a | 12446 | elf32_arm_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED) |
ba96a88f | 12447 | { |
9b485d32 | 12448 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ |
e489d0ae | 12449 | struct elf32_arm_link_hash_table *globals; |
ba96a88f NC |
12450 | |
12451 | i_ehdrp = elf_elfheader (abfd); | |
12452 | ||
94a3258f PB |
12453 | if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_UNKNOWN) |
12454 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_ARM; | |
12455 | else | |
12456 | i_ehdrp->e_ident[EI_OSABI] = 0; | |
ba96a88f | 12457 | i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION; |
e489d0ae | 12458 | |
93204d3a PB |
12459 | if (link_info) |
12460 | { | |
12461 | globals = elf32_arm_hash_table (link_info); | |
12462 | if (globals->byteswap_code) | |
12463 | i_ehdrp->e_flags |= EF_ARM_BE8; | |
12464 | } | |
ba96a88f NC |
12465 | } |
12466 | ||
99e4ae17 | 12467 | static enum elf_reloc_type_class |
57e8b36a | 12468 | elf32_arm_reloc_type_class (const Elf_Internal_Rela *rela) |
99e4ae17 | 12469 | { |
f51e552e | 12470 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
99e4ae17 AJ |
12471 | { |
12472 | case R_ARM_RELATIVE: | |
12473 | return reloc_class_relative; | |
12474 | case R_ARM_JUMP_SLOT: | |
12475 | return reloc_class_plt; | |
12476 | case R_ARM_COPY: | |
12477 | return reloc_class_copy; | |
12478 | default: | |
12479 | return reloc_class_normal; | |
12480 | } | |
12481 | } | |
12482 | ||
e16bb312 NC |
12483 | /* Set the right machine number for an Arm ELF file. */ |
12484 | ||
12485 | static bfd_boolean | |
57e8b36a | 12486 | elf32_arm_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr) |
e16bb312 NC |
12487 | { |
12488 | if (hdr->sh_type == SHT_NOTE) | |
12489 | *flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
12490 | ||
12491 | return TRUE; | |
12492 | } | |
12493 | ||
e489d0ae | 12494 | static void |
57e8b36a | 12495 | elf32_arm_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) |
e16bb312 | 12496 | { |
5a6c6817 | 12497 | bfd_arm_update_notes (abfd, ARM_NOTE_SECTION); |
e16bb312 NC |
12498 | } |
12499 | ||
40a18ebd NC |
12500 | /* Return TRUE if this is an unwinding table entry. */ |
12501 | ||
12502 | static bfd_boolean | |
12503 | is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name) | |
12504 | { | |
0112cd26 NC |
12505 | return (CONST_STRNEQ (name, ELF_STRING_ARM_unwind) |
12506 | || CONST_STRNEQ (name, ELF_STRING_ARM_unwind_once)); | |
40a18ebd NC |
12507 | } |
12508 | ||
12509 | ||
12510 | /* Set the type and flags for an ARM section. We do this by | |
12511 | the section name, which is a hack, but ought to work. */ | |
12512 | ||
12513 | static bfd_boolean | |
12514 | elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec) | |
12515 | { | |
12516 | const char * name; | |
12517 | ||
12518 | name = bfd_get_section_name (abfd, sec); | |
12519 | ||
12520 | if (is_arm_elf_unwind_section_name (abfd, name)) | |
12521 | { | |
12522 | hdr->sh_type = SHT_ARM_EXIDX; | |
12523 | hdr->sh_flags |= SHF_LINK_ORDER; | |
12524 | } | |
12525 | return TRUE; | |
12526 | } | |
12527 | ||
6dc132d9 L |
12528 | /* Handle an ARM specific section when reading an object file. This is |
12529 | called when bfd_section_from_shdr finds a section with an unknown | |
12530 | type. */ | |
40a18ebd NC |
12531 | |
12532 | static bfd_boolean | |
12533 | elf32_arm_section_from_shdr (bfd *abfd, | |
12534 | Elf_Internal_Shdr * hdr, | |
6dc132d9 L |
12535 | const char *name, |
12536 | int shindex) | |
40a18ebd NC |
12537 | { |
12538 | /* There ought to be a place to keep ELF backend specific flags, but | |
12539 | at the moment there isn't one. We just keep track of the | |
12540 | sections by their name, instead. Fortunately, the ABI gives | |
12541 | names for all the ARM specific sections, so we will probably get | |
12542 | away with this. */ | |
12543 | switch (hdr->sh_type) | |
12544 | { | |
12545 | case SHT_ARM_EXIDX: | |
0951f019 RE |
12546 | case SHT_ARM_PREEMPTMAP: |
12547 | case SHT_ARM_ATTRIBUTES: | |
40a18ebd NC |
12548 | break; |
12549 | ||
12550 | default: | |
12551 | return FALSE; | |
12552 | } | |
12553 | ||
6dc132d9 | 12554 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
40a18ebd NC |
12555 | return FALSE; |
12556 | ||
12557 | return TRUE; | |
12558 | } | |
e489d0ae | 12559 | |
8e3de13a NC |
12560 | /* A structure used to record a list of sections, independently |
12561 | of the next and prev fields in the asection structure. */ | |
12562 | typedef struct section_list | |
12563 | { | |
12564 | asection * sec; | |
12565 | struct section_list * next; | |
12566 | struct section_list * prev; | |
12567 | } | |
12568 | section_list; | |
12569 | ||
12570 | /* Unfortunately we need to keep a list of sections for which | |
12571 | an _arm_elf_section_data structure has been allocated. This | |
12572 | is because it is possible for functions like elf32_arm_write_section | |
12573 | to be called on a section which has had an elf_data_structure | |
12574 | allocated for it (and so the used_by_bfd field is valid) but | |
12575 | for which the ARM extended version of this structure - the | |
12576 | _arm_elf_section_data structure - has not been allocated. */ | |
12577 | static section_list * sections_with_arm_elf_section_data = NULL; | |
12578 | ||
12579 | static void | |
957c6e41 | 12580 | record_section_with_arm_elf_section_data (asection * sec) |
8e3de13a NC |
12581 | { |
12582 | struct section_list * entry; | |
12583 | ||
957c6e41 | 12584 | entry = bfd_malloc (sizeof (* entry)); |
8e3de13a NC |
12585 | if (entry == NULL) |
12586 | return; | |
12587 | entry->sec = sec; | |
12588 | entry->next = sections_with_arm_elf_section_data; | |
12589 | entry->prev = NULL; | |
12590 | if (entry->next != NULL) | |
12591 | entry->next->prev = entry; | |
12592 | sections_with_arm_elf_section_data = entry; | |
12593 | } | |
12594 | ||
44444f50 NC |
12595 | static struct section_list * |
12596 | find_arm_elf_section_entry (asection * sec) | |
8e3de13a NC |
12597 | { |
12598 | struct section_list * entry; | |
bd4aae00 | 12599 | static struct section_list * last_entry = NULL; |
8e3de13a | 12600 | |
bd4aae00 NC |
12601 | /* This is a short cut for the typical case where the sections are added |
12602 | to the sections_with_arm_elf_section_data list in forward order and | |
12603 | then looked up here in backwards order. This makes a real difference | |
12604 | to the ld-srec/sec64k.exp linker test. */ | |
44444f50 | 12605 | entry = sections_with_arm_elf_section_data; |
bd4aae00 NC |
12606 | if (last_entry != NULL) |
12607 | { | |
12608 | if (last_entry->sec == sec) | |
44444f50 NC |
12609 | entry = last_entry; |
12610 | else if (last_entry->next != NULL | |
12611 | && last_entry->next->sec == sec) | |
12612 | entry = last_entry->next; | |
bd4aae00 | 12613 | } |
44444f50 NC |
12614 | |
12615 | for (; entry; entry = entry->next) | |
8e3de13a | 12616 | if (entry->sec == sec) |
44444f50 | 12617 | break; |
bd4aae00 | 12618 | |
44444f50 NC |
12619 | if (entry) |
12620 | /* Record the entry prior to this one - it is the entry we are most | |
12621 | likely to want to locate next time. Also this way if we have been | |
12622 | called from unrecord_section_with_arm_elf_section_data() we will not | |
12623 | be caching a pointer that is about to be freed. */ | |
12624 | last_entry = entry->prev; | |
12625 | ||
12626 | return entry; | |
12627 | } | |
12628 | ||
12629 | static _arm_elf_section_data * | |
12630 | get_arm_elf_section_data (asection * sec) | |
12631 | { | |
12632 | struct section_list * entry; | |
12633 | ||
12634 | entry = find_arm_elf_section_entry (sec); | |
12635 | ||
12636 | if (entry) | |
12637 | return elf32_arm_section_data (entry->sec); | |
12638 | else | |
12639 | return NULL; | |
8e3de13a NC |
12640 | } |
12641 | ||
12642 | static void | |
12643 | unrecord_section_with_arm_elf_section_data (asection * sec) | |
12644 | { | |
12645 | struct section_list * entry; | |
12646 | ||
44444f50 NC |
12647 | entry = find_arm_elf_section_entry (sec); |
12648 | ||
12649 | if (entry) | |
12650 | { | |
12651 | if (entry->prev != NULL) | |
12652 | entry->prev->next = entry->next; | |
12653 | if (entry->next != NULL) | |
12654 | entry->next->prev = entry->prev; | |
12655 | if (entry == sections_with_arm_elf_section_data) | |
12656 | sections_with_arm_elf_section_data = entry->next; | |
12657 | free (entry); | |
12658 | } | |
8e3de13a NC |
12659 | } |
12660 | ||
e489d0ae | 12661 | |
4e617b1e PB |
12662 | typedef struct |
12663 | { | |
12664 | void *finfo; | |
12665 | struct bfd_link_info *info; | |
91a5743d PB |
12666 | asection *sec; |
12667 | int sec_shndx; | |
6e0b88f1 AM |
12668 | int (*func) (void *, const char *, Elf_Internal_Sym *, |
12669 | asection *, struct elf_link_hash_entry *); | |
4e617b1e PB |
12670 | } output_arch_syminfo; |
12671 | ||
12672 | enum map_symbol_type | |
12673 | { | |
12674 | ARM_MAP_ARM, | |
12675 | ARM_MAP_THUMB, | |
12676 | ARM_MAP_DATA | |
12677 | }; | |
12678 | ||
12679 | ||
7413f23f | 12680 | /* Output a single mapping symbol. */ |
4e617b1e PB |
12681 | |
12682 | static bfd_boolean | |
7413f23f DJ |
12683 | elf32_arm_output_map_sym (output_arch_syminfo *osi, |
12684 | enum map_symbol_type type, | |
12685 | bfd_vma offset) | |
4e617b1e PB |
12686 | { |
12687 | static const char *names[3] = {"$a", "$t", "$d"}; | |
12688 | struct elf32_arm_link_hash_table *htab; | |
12689 | Elf_Internal_Sym sym; | |
12690 | ||
12691 | htab = elf32_arm_hash_table (osi->info); | |
91a5743d PB |
12692 | sym.st_value = osi->sec->output_section->vma |
12693 | + osi->sec->output_offset | |
12694 | + offset; | |
4e617b1e PB |
12695 | sym.st_size = 0; |
12696 | sym.st_other = 0; | |
12697 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
91a5743d | 12698 | sym.st_shndx = osi->sec_shndx; |
6e0b88f1 | 12699 | return osi->func (osi->finfo, names[type], &sym, osi->sec, NULL) == 1; |
4e617b1e PB |
12700 | } |
12701 | ||
12702 | ||
12703 | /* Output mapping symbols for PLT entries associated with H. */ | |
12704 | ||
12705 | static bfd_boolean | |
12706 | elf32_arm_output_plt_map (struct elf_link_hash_entry *h, void *inf) | |
12707 | { | |
12708 | output_arch_syminfo *osi = (output_arch_syminfo *) inf; | |
12709 | struct elf32_arm_link_hash_table *htab; | |
12710 | struct elf32_arm_link_hash_entry *eh; | |
12711 | bfd_vma addr; | |
12712 | ||
12713 | htab = elf32_arm_hash_table (osi->info); | |
12714 | ||
12715 | if (h->root.type == bfd_link_hash_indirect) | |
12716 | return TRUE; | |
12717 | ||
12718 | if (h->root.type == bfd_link_hash_warning) | |
12719 | /* When warning symbols are created, they **replace** the "real" | |
12720 | entry in the hash table, thus we never get to see the real | |
12721 | symbol in a hash traversal. So look at it now. */ | |
12722 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
12723 | ||
12724 | if (h->plt.offset == (bfd_vma) -1) | |
12725 | return TRUE; | |
12726 | ||
12727 | eh = (struct elf32_arm_link_hash_entry *) h; | |
12728 | addr = h->plt.offset; | |
12729 | if (htab->symbian_p) | |
12730 | { | |
7413f23f | 12731 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr)) |
4e617b1e | 12732 | return FALSE; |
7413f23f | 12733 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 4)) |
4e617b1e PB |
12734 | return FALSE; |
12735 | } | |
12736 | else if (htab->vxworks_p) | |
12737 | { | |
7413f23f | 12738 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr)) |
4e617b1e | 12739 | return FALSE; |
7413f23f | 12740 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 8)) |
4e617b1e | 12741 | return FALSE; |
7413f23f | 12742 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr + 12)) |
4e617b1e | 12743 | return FALSE; |
7413f23f | 12744 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 20)) |
4e617b1e PB |
12745 | return FALSE; |
12746 | } | |
12747 | else | |
12748 | { | |
bd97cb95 DJ |
12749 | bfd_signed_vma thumb_refs; |
12750 | ||
12751 | thumb_refs = eh->plt_thumb_refcount; | |
12752 | if (!htab->use_blx) | |
12753 | thumb_refs += eh->plt_maybe_thumb_refcount; | |
4e617b1e | 12754 | |
bd97cb95 | 12755 | if (thumb_refs > 0) |
4e617b1e | 12756 | { |
7413f23f | 12757 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_THUMB, addr - 4)) |
4e617b1e PB |
12758 | return FALSE; |
12759 | } | |
12760 | #ifdef FOUR_WORD_PLT | |
7413f23f | 12761 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr)) |
4e617b1e | 12762 | return FALSE; |
7413f23f | 12763 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 12)) |
4e617b1e PB |
12764 | return FALSE; |
12765 | #else | |
906e58ca | 12766 | /* A three-word PLT with no Thumb thunk contains only Arm code, |
4e617b1e PB |
12767 | so only need to output a mapping symbol for the first PLT entry and |
12768 | entries with thumb thunks. */ | |
bd97cb95 | 12769 | if (thumb_refs > 0 || addr == 20) |
4e617b1e | 12770 | { |
7413f23f | 12771 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr)) |
4e617b1e PB |
12772 | return FALSE; |
12773 | } | |
12774 | #endif | |
12775 | } | |
12776 | ||
12777 | return TRUE; | |
12778 | } | |
12779 | ||
7413f23f DJ |
12780 | /* Output a single local symbol for a generated stub. */ |
12781 | ||
12782 | static bfd_boolean | |
12783 | elf32_arm_output_stub_sym (output_arch_syminfo *osi, const char *name, | |
12784 | bfd_vma offset, bfd_vma size) | |
12785 | { | |
12786 | struct elf32_arm_link_hash_table *htab; | |
12787 | Elf_Internal_Sym sym; | |
12788 | ||
12789 | htab = elf32_arm_hash_table (osi->info); | |
12790 | sym.st_value = osi->sec->output_section->vma | |
12791 | + osi->sec->output_offset | |
12792 | + offset; | |
12793 | sym.st_size = size; | |
12794 | sym.st_other = 0; | |
12795 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
12796 | sym.st_shndx = osi->sec_shndx; | |
6e0b88f1 | 12797 | return osi->func (osi->finfo, name, &sym, osi->sec, NULL) == 1; |
7413f23f | 12798 | } |
4e617b1e | 12799 | |
da5938a2 | 12800 | static bfd_boolean |
8029a119 NC |
12801 | arm_map_one_stub (struct bfd_hash_entry * gen_entry, |
12802 | void * in_arg) | |
da5938a2 NC |
12803 | { |
12804 | struct elf32_arm_stub_hash_entry *stub_entry; | |
12805 | struct bfd_link_info *info; | |
12806 | struct elf32_arm_link_hash_table *htab; | |
12807 | asection *stub_sec; | |
12808 | bfd_vma addr; | |
7413f23f | 12809 | char *stub_name; |
9a008db3 | 12810 | output_arch_syminfo *osi; |
461a49ca DJ |
12811 | const insn_sequence *template; |
12812 | enum stub_insn_type prev_type; | |
12813 | int size; | |
12814 | int i; | |
12815 | enum map_symbol_type sym_type; | |
da5938a2 NC |
12816 | |
12817 | /* Massage our args to the form they really have. */ | |
12818 | stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry; | |
9a008db3 | 12819 | osi = (output_arch_syminfo *) in_arg; |
da5938a2 | 12820 | |
da5938a2 NC |
12821 | info = osi->info; |
12822 | ||
12823 | htab = elf32_arm_hash_table (info); | |
12824 | stub_sec = stub_entry->stub_sec; | |
12825 | ||
12826 | /* Ensure this stub is attached to the current section being | |
7413f23f | 12827 | processed. */ |
da5938a2 NC |
12828 | if (stub_sec != osi->sec) |
12829 | return TRUE; | |
12830 | ||
7413f23f DJ |
12831 | addr = (bfd_vma) stub_entry->stub_offset; |
12832 | stub_name = stub_entry->output_name; | |
da5938a2 | 12833 | |
461a49ca | 12834 | template = stub_entry->stub_template; |
4e31c731 | 12835 | switch (template[0].type) |
7413f23f | 12836 | { |
461a49ca DJ |
12837 | case ARM_TYPE: |
12838 | if (!elf32_arm_output_stub_sym (osi, stub_name, addr, stub_entry->stub_size)) | |
da5938a2 NC |
12839 | return FALSE; |
12840 | break; | |
461a49ca | 12841 | case THUMB16_TYPE: |
48229727 | 12842 | case THUMB32_TYPE: |
461a49ca DJ |
12843 | if (!elf32_arm_output_stub_sym (osi, stub_name, addr | 1, |
12844 | stub_entry->stub_size)) | |
da5938a2 NC |
12845 | return FALSE; |
12846 | break; | |
12847 | default: | |
12848 | BFD_FAIL (); | |
48229727 | 12849 | return 0; |
7413f23f | 12850 | } |
da5938a2 | 12851 | |
461a49ca DJ |
12852 | prev_type = DATA_TYPE; |
12853 | size = 0; | |
12854 | for (i = 0; i < stub_entry->stub_template_size; i++) | |
12855 | { | |
4e31c731 | 12856 | switch (template[i].type) |
461a49ca DJ |
12857 | { |
12858 | case ARM_TYPE: | |
12859 | sym_type = ARM_MAP_ARM; | |
12860 | break; | |
12861 | ||
12862 | case THUMB16_TYPE: | |
48229727 | 12863 | case THUMB32_TYPE: |
461a49ca DJ |
12864 | sym_type = ARM_MAP_THUMB; |
12865 | break; | |
12866 | ||
12867 | case DATA_TYPE: | |
12868 | sym_type = ARM_MAP_DATA; | |
12869 | break; | |
12870 | ||
12871 | default: | |
12872 | BFD_FAIL (); | |
4e31c731 | 12873 | return FALSE; |
461a49ca DJ |
12874 | } |
12875 | ||
12876 | if (template[i].type != prev_type) | |
12877 | { | |
12878 | prev_type = template[i].type; | |
12879 | if (!elf32_arm_output_map_sym (osi, sym_type, addr + size)) | |
12880 | return FALSE; | |
12881 | } | |
12882 | ||
4e31c731 | 12883 | switch (template[i].type) |
461a49ca DJ |
12884 | { |
12885 | case ARM_TYPE: | |
48229727 | 12886 | case THUMB32_TYPE: |
461a49ca DJ |
12887 | size += 4; |
12888 | break; | |
12889 | ||
12890 | case THUMB16_TYPE: | |
12891 | size += 2; | |
12892 | break; | |
12893 | ||
12894 | case DATA_TYPE: | |
12895 | size += 4; | |
12896 | break; | |
12897 | ||
12898 | default: | |
12899 | BFD_FAIL (); | |
4e31c731 | 12900 | return FALSE; |
461a49ca DJ |
12901 | } |
12902 | } | |
12903 | ||
da5938a2 NC |
12904 | return TRUE; |
12905 | } | |
12906 | ||
91a5743d | 12907 | /* Output mapping symbols for linker generated sections. */ |
4e617b1e PB |
12908 | |
12909 | static bfd_boolean | |
12910 | elf32_arm_output_arch_local_syms (bfd *output_bfd, | |
906e58ca NC |
12911 | struct bfd_link_info *info, |
12912 | void *finfo, | |
6e0b88f1 AM |
12913 | int (*func) (void *, const char *, |
12914 | Elf_Internal_Sym *, | |
12915 | asection *, | |
12916 | struct elf_link_hash_entry *)) | |
4e617b1e PB |
12917 | { |
12918 | output_arch_syminfo osi; | |
12919 | struct elf32_arm_link_hash_table *htab; | |
91a5743d PB |
12920 | bfd_vma offset; |
12921 | bfd_size_type size; | |
4e617b1e PB |
12922 | |
12923 | htab = elf32_arm_hash_table (info); | |
906e58ca | 12924 | check_use_blx (htab); |
91a5743d | 12925 | |
4e617b1e PB |
12926 | osi.finfo = finfo; |
12927 | osi.info = info; | |
12928 | osi.func = func; | |
906e58ca | 12929 | |
91a5743d PB |
12930 | /* ARM->Thumb glue. */ |
12931 | if (htab->arm_glue_size > 0) | |
12932 | { | |
12933 | osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner, | |
12934 | ARM2THUMB_GLUE_SECTION_NAME); | |
12935 | ||
12936 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
12937 | (output_bfd, osi.sec->output_section); | |
12938 | if (info->shared || htab->root.is_relocatable_executable | |
12939 | || htab->pic_veneer) | |
12940 | size = ARM2THUMB_PIC_GLUE_SIZE; | |
12941 | else if (htab->use_blx) | |
12942 | size = ARM2THUMB_V5_STATIC_GLUE_SIZE; | |
12943 | else | |
12944 | size = ARM2THUMB_STATIC_GLUE_SIZE; | |
4e617b1e | 12945 | |
91a5743d PB |
12946 | for (offset = 0; offset < htab->arm_glue_size; offset += size) |
12947 | { | |
7413f23f DJ |
12948 | elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, offset); |
12949 | elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, offset + size - 4); | |
91a5743d PB |
12950 | } |
12951 | } | |
12952 | ||
12953 | /* Thumb->ARM glue. */ | |
12954 | if (htab->thumb_glue_size > 0) | |
12955 | { | |
12956 | osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner, | |
12957 | THUMB2ARM_GLUE_SECTION_NAME); | |
12958 | ||
12959 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
12960 | (output_bfd, osi.sec->output_section); | |
12961 | size = THUMB2ARM_GLUE_SIZE; | |
12962 | ||
12963 | for (offset = 0; offset < htab->thumb_glue_size; offset += size) | |
12964 | { | |
7413f23f DJ |
12965 | elf32_arm_output_map_sym (&osi, ARM_MAP_THUMB, offset); |
12966 | elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, offset + 4); | |
91a5743d PB |
12967 | } |
12968 | } | |
12969 | ||
845b51d6 PB |
12970 | /* ARMv4 BX veneers. */ |
12971 | if (htab->bx_glue_size > 0) | |
12972 | { | |
12973 | osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner, | |
12974 | ARM_BX_GLUE_SECTION_NAME); | |
12975 | ||
12976 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
12977 | (output_bfd, osi.sec->output_section); | |
12978 | ||
7413f23f | 12979 | elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0); |
845b51d6 PB |
12980 | } |
12981 | ||
8029a119 NC |
12982 | /* Long calls stubs. */ |
12983 | if (htab->stub_bfd && htab->stub_bfd->sections) | |
12984 | { | |
da5938a2 | 12985 | asection* stub_sec; |
8029a119 | 12986 | |
da5938a2 NC |
12987 | for (stub_sec = htab->stub_bfd->sections; |
12988 | stub_sec != NULL; | |
8029a119 NC |
12989 | stub_sec = stub_sec->next) |
12990 | { | |
12991 | /* Ignore non-stub sections. */ | |
12992 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
12993 | continue; | |
da5938a2 | 12994 | |
8029a119 | 12995 | osi.sec = stub_sec; |
da5938a2 | 12996 | |
8029a119 NC |
12997 | osi.sec_shndx = _bfd_elf_section_from_bfd_section |
12998 | (output_bfd, osi.sec->output_section); | |
da5938a2 | 12999 | |
8029a119 NC |
13000 | bfd_hash_traverse (&htab->stub_hash_table, arm_map_one_stub, &osi); |
13001 | } | |
13002 | } | |
da5938a2 | 13003 | |
91a5743d PB |
13004 | /* Finally, output mapping symbols for the PLT. */ |
13005 | if (!htab->splt || htab->splt->size == 0) | |
13006 | return TRUE; | |
13007 | ||
13008 | osi.sec_shndx = _bfd_elf_section_from_bfd_section (output_bfd, | |
8029a119 | 13009 | htab->splt->output_section); |
91a5743d | 13010 | osi.sec = htab->splt; |
4e617b1e PB |
13011 | /* Output mapping symbols for the plt header. SymbianOS does not have a |
13012 | plt header. */ | |
13013 | if (htab->vxworks_p) | |
13014 | { | |
13015 | /* VxWorks shared libraries have no PLT header. */ | |
13016 | if (!info->shared) | |
13017 | { | |
7413f23f | 13018 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0)) |
4e617b1e | 13019 | return FALSE; |
7413f23f | 13020 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 12)) |
4e617b1e PB |
13021 | return FALSE; |
13022 | } | |
13023 | } | |
13024 | else if (!htab->symbian_p) | |
13025 | { | |
7413f23f | 13026 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0)) |
4e617b1e PB |
13027 | return FALSE; |
13028 | #ifndef FOUR_WORD_PLT | |
7413f23f | 13029 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 16)) |
4e617b1e PB |
13030 | return FALSE; |
13031 | #endif | |
13032 | } | |
13033 | ||
13034 | elf_link_hash_traverse (&htab->root, elf32_arm_output_plt_map, (void *) &osi); | |
13035 | return TRUE; | |
13036 | } | |
13037 | ||
e489d0ae PB |
13038 | /* Allocate target specific section data. */ |
13039 | ||
13040 | static bfd_boolean | |
13041 | elf32_arm_new_section_hook (bfd *abfd, asection *sec) | |
13042 | { | |
f592407e AM |
13043 | if (!sec->used_by_bfd) |
13044 | { | |
13045 | _arm_elf_section_data *sdata; | |
13046 | bfd_size_type amt = sizeof (*sdata); | |
e489d0ae | 13047 | |
f592407e AM |
13048 | sdata = bfd_zalloc (abfd, amt); |
13049 | if (sdata == NULL) | |
13050 | return FALSE; | |
13051 | sec->used_by_bfd = sdata; | |
13052 | } | |
e489d0ae | 13053 | |
957c6e41 | 13054 | record_section_with_arm_elf_section_data (sec); |
8e3de13a | 13055 | |
e489d0ae PB |
13056 | return _bfd_elf_new_section_hook (abfd, sec); |
13057 | } | |
13058 | ||
13059 | ||
13060 | /* Used to order a list of mapping symbols by address. */ | |
13061 | ||
13062 | static int | |
13063 | elf32_arm_compare_mapping (const void * a, const void * b) | |
13064 | { | |
7f6a71ff JM |
13065 | const elf32_arm_section_map *amap = (const elf32_arm_section_map *) a; |
13066 | const elf32_arm_section_map *bmap = (const elf32_arm_section_map *) b; | |
13067 | ||
13068 | if (amap->vma > bmap->vma) | |
13069 | return 1; | |
13070 | else if (amap->vma < bmap->vma) | |
13071 | return -1; | |
13072 | else if (amap->type > bmap->type) | |
13073 | /* Ensure results do not depend on the host qsort for objects with | |
13074 | multiple mapping symbols at the same address by sorting on type | |
13075 | after vma. */ | |
13076 | return 1; | |
13077 | else if (amap->type < bmap->type) | |
13078 | return -1; | |
13079 | else | |
13080 | return 0; | |
e489d0ae PB |
13081 | } |
13082 | ||
2468f9c9 PB |
13083 | /* Add OFFSET to lower 31 bits of ADDR, leaving other bits unmodified. */ |
13084 | ||
13085 | static unsigned long | |
13086 | offset_prel31 (unsigned long addr, bfd_vma offset) | |
13087 | { | |
13088 | return (addr & ~0x7ffffffful) | ((addr + offset) & 0x7ffffffful); | |
13089 | } | |
13090 | ||
13091 | /* Copy an .ARM.exidx table entry, adding OFFSET to (applied) PREL31 | |
13092 | relocations. */ | |
13093 | ||
13094 | static void | |
13095 | copy_exidx_entry (bfd *output_bfd, bfd_byte *to, bfd_byte *from, bfd_vma offset) | |
13096 | { | |
13097 | unsigned long first_word = bfd_get_32 (output_bfd, from); | |
13098 | unsigned long second_word = bfd_get_32 (output_bfd, from + 4); | |
13099 | ||
13100 | /* High bit of first word is supposed to be zero. */ | |
13101 | if ((first_word & 0x80000000ul) == 0) | |
13102 | first_word = offset_prel31 (first_word, offset); | |
13103 | ||
13104 | /* If the high bit of the first word is clear, and the bit pattern is not 0x1 | |
13105 | (EXIDX_CANTUNWIND), this is an offset to an .ARM.extab entry. */ | |
13106 | if ((second_word != 0x1) && ((second_word & 0x80000000ul) == 0)) | |
13107 | second_word = offset_prel31 (second_word, offset); | |
13108 | ||
13109 | bfd_put_32 (output_bfd, first_word, to); | |
13110 | bfd_put_32 (output_bfd, second_word, to + 4); | |
13111 | } | |
e489d0ae | 13112 | |
48229727 JB |
13113 | /* Data for make_branch_to_a8_stub(). */ |
13114 | ||
13115 | struct a8_branch_to_stub_data { | |
13116 | asection *writing_section; | |
13117 | bfd_byte *contents; | |
13118 | }; | |
13119 | ||
13120 | ||
13121 | /* Helper to insert branches to Cortex-A8 erratum stubs in the right | |
13122 | places for a particular section. */ | |
13123 | ||
13124 | static bfd_boolean | |
13125 | make_branch_to_a8_stub (struct bfd_hash_entry *gen_entry, | |
13126 | void *in_arg) | |
13127 | { | |
13128 | struct elf32_arm_stub_hash_entry *stub_entry; | |
13129 | struct a8_branch_to_stub_data *data; | |
13130 | bfd_byte *contents; | |
13131 | unsigned long branch_insn; | |
13132 | bfd_vma veneered_insn_loc, veneer_entry_loc; | |
13133 | bfd_signed_vma branch_offset; | |
13134 | bfd *abfd; | |
13135 | unsigned int index; | |
13136 | ||
13137 | stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry; | |
13138 | data = (struct a8_branch_to_stub_data *) in_arg; | |
13139 | ||
13140 | if (stub_entry->target_section != data->writing_section | |
13141 | || stub_entry->stub_type < arm_stub_a8_veneer_b_cond) | |
13142 | return TRUE; | |
13143 | ||
13144 | contents = data->contents; | |
13145 | ||
13146 | veneered_insn_loc = stub_entry->target_section->output_section->vma | |
13147 | + stub_entry->target_section->output_offset | |
13148 | + stub_entry->target_value; | |
13149 | ||
13150 | veneer_entry_loc = stub_entry->stub_sec->output_section->vma | |
13151 | + stub_entry->stub_sec->output_offset | |
13152 | + stub_entry->stub_offset; | |
13153 | ||
13154 | if (stub_entry->stub_type == arm_stub_a8_veneer_blx) | |
13155 | veneered_insn_loc &= ~3u; | |
13156 | ||
13157 | branch_offset = veneer_entry_loc - veneered_insn_loc - 4; | |
13158 | ||
13159 | abfd = stub_entry->target_section->owner; | |
13160 | index = stub_entry->target_value; | |
13161 | ||
13162 | /* We attempt to avoid this condition by setting stubs_always_after_branch | |
13163 | in elf32_arm_size_stubs if we've enabled the Cortex-A8 erratum workaround. | |
13164 | This check is just to be on the safe side... */ | |
13165 | if ((veneered_insn_loc & ~0xfff) == (veneer_entry_loc & ~0xfff)) | |
13166 | { | |
13167 | (*_bfd_error_handler) (_("%B: error: Cortex-A8 erratum stub is " | |
13168 | "allocated in unsafe location"), abfd); | |
13169 | return FALSE; | |
13170 | } | |
13171 | ||
13172 | switch (stub_entry->stub_type) | |
13173 | { | |
13174 | case arm_stub_a8_veneer_b: | |
13175 | case arm_stub_a8_veneer_b_cond: | |
13176 | branch_insn = 0xf0009000; | |
13177 | goto jump24; | |
13178 | ||
13179 | case arm_stub_a8_veneer_blx: | |
13180 | branch_insn = 0xf000e800; | |
13181 | goto jump24; | |
13182 | ||
13183 | case arm_stub_a8_veneer_bl: | |
13184 | { | |
13185 | unsigned int i1, j1, i2, j2, s; | |
13186 | ||
13187 | branch_insn = 0xf000d000; | |
13188 | ||
13189 | jump24: | |
13190 | if (branch_offset < -16777216 || branch_offset > 16777214) | |
13191 | { | |
13192 | /* There's not much we can do apart from complain if this | |
13193 | happens. */ | |
13194 | (*_bfd_error_handler) (_("%B: error: Cortex-A8 erratum stub out " | |
13195 | "of range (input file too large)"), abfd); | |
13196 | return FALSE; | |
13197 | } | |
13198 | ||
13199 | /* i1 = not(j1 eor s), so: | |
13200 | not i1 = j1 eor s | |
13201 | j1 = (not i1) eor s. */ | |
13202 | ||
13203 | branch_insn |= (branch_offset >> 1) & 0x7ff; | |
13204 | branch_insn |= ((branch_offset >> 12) & 0x3ff) << 16; | |
13205 | i2 = (branch_offset >> 22) & 1; | |
13206 | i1 = (branch_offset >> 23) & 1; | |
13207 | s = (branch_offset >> 24) & 1; | |
13208 | j1 = (!i1) ^ s; | |
13209 | j2 = (!i2) ^ s; | |
13210 | branch_insn |= j2 << 11; | |
13211 | branch_insn |= j1 << 13; | |
13212 | branch_insn |= s << 26; | |
13213 | } | |
13214 | break; | |
13215 | ||
13216 | default: | |
13217 | BFD_FAIL (); | |
13218 | return FALSE; | |
13219 | } | |
13220 | ||
13221 | bfd_put_16 (abfd, (branch_insn >> 16) & 0xffff, &contents[index]); | |
13222 | bfd_put_16 (abfd, branch_insn & 0xffff, &contents[index + 2]); | |
13223 | ||
13224 | return TRUE; | |
13225 | } | |
13226 | ||
e489d0ae PB |
13227 | /* Do code byteswapping. Return FALSE afterwards so that the section is |
13228 | written out as normal. */ | |
13229 | ||
13230 | static bfd_boolean | |
c7b8f16e | 13231 | elf32_arm_write_section (bfd *output_bfd, |
8029a119 NC |
13232 | struct bfd_link_info *link_info, |
13233 | asection *sec, | |
e489d0ae PB |
13234 | bfd_byte *contents) |
13235 | { | |
48229727 | 13236 | unsigned int mapcount, errcount; |
8e3de13a | 13237 | _arm_elf_section_data *arm_data; |
c7b8f16e | 13238 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); |
e489d0ae | 13239 | elf32_arm_section_map *map; |
c7b8f16e | 13240 | elf32_vfp11_erratum_list *errnode; |
e489d0ae PB |
13241 | bfd_vma ptr; |
13242 | bfd_vma end; | |
c7b8f16e | 13243 | bfd_vma offset = sec->output_section->vma + sec->output_offset; |
e489d0ae | 13244 | bfd_byte tmp; |
48229727 | 13245 | unsigned int i; |
57e8b36a | 13246 | |
8e3de13a NC |
13247 | /* If this section has not been allocated an _arm_elf_section_data |
13248 | structure then we cannot record anything. */ | |
13249 | arm_data = get_arm_elf_section_data (sec); | |
13250 | if (arm_data == NULL) | |
13251 | return FALSE; | |
13252 | ||
13253 | mapcount = arm_data->mapcount; | |
13254 | map = arm_data->map; | |
c7b8f16e JB |
13255 | errcount = arm_data->erratumcount; |
13256 | ||
13257 | if (errcount != 0) | |
13258 | { | |
13259 | unsigned int endianflip = bfd_big_endian (output_bfd) ? 3 : 0; | |
13260 | ||
13261 | for (errnode = arm_data->erratumlist; errnode != 0; | |
13262 | errnode = errnode->next) | |
13263 | { | |
13264 | bfd_vma index = errnode->vma - offset; | |
13265 | ||
13266 | switch (errnode->type) | |
13267 | { | |
13268 | case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER: | |
13269 | { | |
13270 | bfd_vma branch_to_veneer; | |
13271 | /* Original condition code of instruction, plus bit mask for | |
13272 | ARM B instruction. */ | |
13273 | unsigned int insn = (errnode->u.b.vfp_insn & 0xf0000000) | |
13274 | | 0x0a000000; | |
13275 | ||
13276 | /* The instruction is before the label. */ | |
13277 | index -= 4; | |
13278 | ||
13279 | /* Above offset included in -4 below. */ | |
13280 | branch_to_veneer = errnode->u.b.veneer->vma | |
13281 | - errnode->vma - 4; | |
13282 | ||
13283 | if ((signed) branch_to_veneer < -(1 << 25) | |
13284 | || (signed) branch_to_veneer >= (1 << 25)) | |
13285 | (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of " | |
13286 | "range"), output_bfd); | |
13287 | ||
13288 | insn |= (branch_to_veneer >> 2) & 0xffffff; | |
13289 | contents[endianflip ^ index] = insn & 0xff; | |
13290 | contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff; | |
13291 | contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff; | |
13292 | contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff; | |
13293 | } | |
13294 | break; | |
13295 | ||
13296 | case VFP11_ERRATUM_ARM_VENEER: | |
13297 | { | |
13298 | bfd_vma branch_from_veneer; | |
13299 | unsigned int insn; | |
13300 | ||
13301 | /* Take size of veneer into account. */ | |
13302 | branch_from_veneer = errnode->u.v.branch->vma | |
13303 | - errnode->vma - 12; | |
13304 | ||
13305 | if ((signed) branch_from_veneer < -(1 << 25) | |
13306 | || (signed) branch_from_veneer >= (1 << 25)) | |
13307 | (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of " | |
13308 | "range"), output_bfd); | |
13309 | ||
13310 | /* Original instruction. */ | |
13311 | insn = errnode->u.v.branch->u.b.vfp_insn; | |
13312 | contents[endianflip ^ index] = insn & 0xff; | |
13313 | contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff; | |
13314 | contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff; | |
13315 | contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff; | |
13316 | ||
13317 | /* Branch back to insn after original insn. */ | |
13318 | insn = 0xea000000 | ((branch_from_veneer >> 2) & 0xffffff); | |
13319 | contents[endianflip ^ (index + 4)] = insn & 0xff; | |
13320 | contents[endianflip ^ (index + 5)] = (insn >> 8) & 0xff; | |
13321 | contents[endianflip ^ (index + 6)] = (insn >> 16) & 0xff; | |
13322 | contents[endianflip ^ (index + 7)] = (insn >> 24) & 0xff; | |
13323 | } | |
13324 | break; | |
13325 | ||
13326 | default: | |
13327 | abort (); | |
13328 | } | |
13329 | } | |
13330 | } | |
e489d0ae | 13331 | |
2468f9c9 PB |
13332 | if (arm_data->elf.this_hdr.sh_type == SHT_ARM_EXIDX) |
13333 | { | |
13334 | arm_unwind_table_edit *edit_node | |
13335 | = arm_data->u.exidx.unwind_edit_list; | |
13336 | /* Now, sec->size is the size of the section we will write. The original | |
13337 | size (before we merged duplicate entries and inserted EXIDX_CANTUNWIND | |
13338 | markers) was sec->rawsize. (This isn't the case if we perform no | |
13339 | edits, then rawsize will be zero and we should use size). */ | |
13340 | bfd_byte *edited_contents = bfd_malloc (sec->size); | |
13341 | unsigned int input_size = sec->rawsize ? sec->rawsize : sec->size; | |
13342 | unsigned int in_index, out_index; | |
13343 | bfd_vma add_to_offsets = 0; | |
13344 | ||
13345 | for (in_index = 0, out_index = 0; in_index * 8 < input_size || edit_node;) | |
13346 | { | |
13347 | if (edit_node) | |
13348 | { | |
13349 | unsigned int edit_index = edit_node->index; | |
13350 | ||
13351 | if (in_index < edit_index && in_index * 8 < input_size) | |
13352 | { | |
13353 | copy_exidx_entry (output_bfd, edited_contents + out_index * 8, | |
13354 | contents + in_index * 8, add_to_offsets); | |
13355 | out_index++; | |
13356 | in_index++; | |
13357 | } | |
13358 | else if (in_index == edit_index | |
13359 | || (in_index * 8 >= input_size | |
13360 | && edit_index == UINT_MAX)) | |
13361 | { | |
13362 | switch (edit_node->type) | |
13363 | { | |
13364 | case DELETE_EXIDX_ENTRY: | |
13365 | in_index++; | |
13366 | add_to_offsets += 8; | |
13367 | break; | |
13368 | ||
13369 | case INSERT_EXIDX_CANTUNWIND_AT_END: | |
13370 | { | |
13371 | asection *text_sec = edit_node->linked_section; | |
13372 | bfd_vma text_offset = text_sec->output_section->vma | |
13373 | + text_sec->output_offset | |
13374 | + text_sec->size; | |
13375 | bfd_vma exidx_offset = offset + out_index * 8; | |
13376 | unsigned long prel31_offset; | |
13377 | ||
13378 | /* Note: this is meant to be equivalent to an | |
13379 | R_ARM_PREL31 relocation. These synthetic | |
13380 | EXIDX_CANTUNWIND markers are not relocated by the | |
13381 | usual BFD method. */ | |
13382 | prel31_offset = (text_offset - exidx_offset) | |
13383 | & 0x7ffffffful; | |
13384 | ||
13385 | /* First address we can't unwind. */ | |
13386 | bfd_put_32 (output_bfd, prel31_offset, | |
13387 | &edited_contents[out_index * 8]); | |
13388 | ||
13389 | /* Code for EXIDX_CANTUNWIND. */ | |
13390 | bfd_put_32 (output_bfd, 0x1, | |
13391 | &edited_contents[out_index * 8 + 4]); | |
13392 | ||
13393 | out_index++; | |
13394 | add_to_offsets -= 8; | |
13395 | } | |
13396 | break; | |
13397 | } | |
13398 | ||
13399 | edit_node = edit_node->next; | |
13400 | } | |
13401 | } | |
13402 | else | |
13403 | { | |
13404 | /* No more edits, copy remaining entries verbatim. */ | |
13405 | copy_exidx_entry (output_bfd, edited_contents + out_index * 8, | |
13406 | contents + in_index * 8, add_to_offsets); | |
13407 | out_index++; | |
13408 | in_index++; | |
13409 | } | |
13410 | } | |
13411 | ||
13412 | if (!(sec->flags & SEC_EXCLUDE) && !(sec->flags & SEC_NEVER_LOAD)) | |
13413 | bfd_set_section_contents (output_bfd, sec->output_section, | |
13414 | edited_contents, | |
13415 | (file_ptr) sec->output_offset, sec->size); | |
13416 | ||
13417 | return TRUE; | |
13418 | } | |
13419 | ||
48229727 JB |
13420 | /* Fix code to point to Cortex-A8 erratum stubs. */ |
13421 | if (globals->fix_cortex_a8) | |
13422 | { | |
13423 | struct a8_branch_to_stub_data data; | |
13424 | ||
13425 | data.writing_section = sec; | |
13426 | data.contents = contents; | |
13427 | ||
13428 | bfd_hash_traverse (&globals->stub_hash_table, make_branch_to_a8_stub, | |
13429 | &data); | |
13430 | } | |
13431 | ||
e489d0ae PB |
13432 | if (mapcount == 0) |
13433 | return FALSE; | |
13434 | ||
c7b8f16e | 13435 | if (globals->byteswap_code) |
e489d0ae | 13436 | { |
c7b8f16e | 13437 | qsort (map, mapcount, sizeof (* map), elf32_arm_compare_mapping); |
57e8b36a | 13438 | |
c7b8f16e JB |
13439 | ptr = map[0].vma; |
13440 | for (i = 0; i < mapcount; i++) | |
13441 | { | |
13442 | if (i == mapcount - 1) | |
13443 | end = sec->size; | |
13444 | else | |
13445 | end = map[i + 1].vma; | |
e489d0ae | 13446 | |
c7b8f16e | 13447 | switch (map[i].type) |
e489d0ae | 13448 | { |
c7b8f16e JB |
13449 | case 'a': |
13450 | /* Byte swap code words. */ | |
13451 | while (ptr + 3 < end) | |
13452 | { | |
13453 | tmp = contents[ptr]; | |
13454 | contents[ptr] = contents[ptr + 3]; | |
13455 | contents[ptr + 3] = tmp; | |
13456 | tmp = contents[ptr + 1]; | |
13457 | contents[ptr + 1] = contents[ptr + 2]; | |
13458 | contents[ptr + 2] = tmp; | |
13459 | ptr += 4; | |
13460 | } | |
13461 | break; | |
e489d0ae | 13462 | |
c7b8f16e JB |
13463 | case 't': |
13464 | /* Byte swap code halfwords. */ | |
13465 | while (ptr + 1 < end) | |
13466 | { | |
13467 | tmp = contents[ptr]; | |
13468 | contents[ptr] = contents[ptr + 1]; | |
13469 | contents[ptr + 1] = tmp; | |
13470 | ptr += 2; | |
13471 | } | |
13472 | break; | |
13473 | ||
13474 | case 'd': | |
13475 | /* Leave data alone. */ | |
13476 | break; | |
13477 | } | |
13478 | ptr = end; | |
13479 | } | |
e489d0ae | 13480 | } |
8e3de13a | 13481 | |
93204d3a | 13482 | free (map); |
8e3de13a | 13483 | arm_data->mapcount = 0; |
c7b8f16e | 13484 | arm_data->mapsize = 0; |
8e3de13a NC |
13485 | arm_data->map = NULL; |
13486 | unrecord_section_with_arm_elf_section_data (sec); | |
13487 | ||
e489d0ae PB |
13488 | return FALSE; |
13489 | } | |
13490 | ||
957c6e41 NC |
13491 | static void |
13492 | unrecord_section_via_map_over_sections (bfd * abfd ATTRIBUTE_UNUSED, | |
13493 | asection * sec, | |
13494 | void * ignore ATTRIBUTE_UNUSED) | |
13495 | { | |
13496 | unrecord_section_with_arm_elf_section_data (sec); | |
13497 | } | |
13498 | ||
13499 | static bfd_boolean | |
13500 | elf32_arm_close_and_cleanup (bfd * abfd) | |
13501 | { | |
b25e3d87 L |
13502 | if (abfd->sections) |
13503 | bfd_map_over_sections (abfd, | |
13504 | unrecord_section_via_map_over_sections, | |
13505 | NULL); | |
957c6e41 NC |
13506 | |
13507 | return _bfd_elf_close_and_cleanup (abfd); | |
13508 | } | |
13509 | ||
b25e3d87 L |
13510 | static bfd_boolean |
13511 | elf32_arm_bfd_free_cached_info (bfd * abfd) | |
13512 | { | |
13513 | if (abfd->sections) | |
13514 | bfd_map_over_sections (abfd, | |
13515 | unrecord_section_via_map_over_sections, | |
13516 | NULL); | |
13517 | ||
13518 | return _bfd_free_cached_info (abfd); | |
13519 | } | |
13520 | ||
b7693d02 DJ |
13521 | /* Display STT_ARM_TFUNC symbols as functions. */ |
13522 | ||
13523 | static void | |
13524 | elf32_arm_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, | |
13525 | asymbol *asym) | |
13526 | { | |
13527 | elf_symbol_type *elfsym = (elf_symbol_type *) asym; | |
13528 | ||
13529 | if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_ARM_TFUNC) | |
13530 | elfsym->symbol.flags |= BSF_FUNCTION; | |
13531 | } | |
13532 | ||
0beaef2b PB |
13533 | |
13534 | /* Mangle thumb function symbols as we read them in. */ | |
13535 | ||
8384fb8f | 13536 | static bfd_boolean |
0beaef2b PB |
13537 | elf32_arm_swap_symbol_in (bfd * abfd, |
13538 | const void *psrc, | |
13539 | const void *pshn, | |
13540 | Elf_Internal_Sym *dst) | |
13541 | { | |
8384fb8f AM |
13542 | if (!bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst)) |
13543 | return FALSE; | |
0beaef2b PB |
13544 | |
13545 | /* New EABI objects mark thumb function symbols by setting the low bit of | |
13546 | the address. Turn these into STT_ARM_TFUNC. */ | |
0f88be7a | 13547 | if ((ELF_ST_TYPE (dst->st_info) == STT_FUNC) |
0beaef2b PB |
13548 | && (dst->st_value & 1)) |
13549 | { | |
13550 | dst->st_info = ELF_ST_INFO (ELF_ST_BIND (dst->st_info), STT_ARM_TFUNC); | |
13551 | dst->st_value &= ~(bfd_vma) 1; | |
13552 | } | |
8384fb8f | 13553 | return TRUE; |
0beaef2b PB |
13554 | } |
13555 | ||
13556 | ||
13557 | /* Mangle thumb function symbols as we write them out. */ | |
13558 | ||
13559 | static void | |
13560 | elf32_arm_swap_symbol_out (bfd *abfd, | |
13561 | const Elf_Internal_Sym *src, | |
13562 | void *cdst, | |
13563 | void *shndx) | |
13564 | { | |
13565 | Elf_Internal_Sym newsym; | |
13566 | ||
13567 | /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit | |
13568 | of the address set, as per the new EABI. We do this unconditionally | |
13569 | because objcopy does not set the elf header flags until after | |
13570 | it writes out the symbol table. */ | |
13571 | if (ELF_ST_TYPE (src->st_info) == STT_ARM_TFUNC) | |
13572 | { | |
13573 | newsym = *src; | |
13574 | newsym.st_info = ELF_ST_INFO (ELF_ST_BIND (src->st_info), STT_FUNC); | |
0fa3dcad PB |
13575 | if (newsym.st_shndx != SHN_UNDEF) |
13576 | { | |
13577 | /* Do this only for defined symbols. At link type, the static | |
13578 | linker will simulate the work of dynamic linker of resolving | |
13579 | symbols and will carry over the thumbness of found symbols to | |
13580 | the output symbol table. It's not clear how it happens, but | |
b0fead2b | 13581 | the thumbness of undefined symbols can well be different at |
0fa3dcad PB |
13582 | runtime, and writing '1' for them will be confusing for users |
13583 | and possibly for dynamic linker itself. | |
13584 | */ | |
13585 | newsym.st_value |= 1; | |
13586 | } | |
906e58ca | 13587 | |
0beaef2b PB |
13588 | src = &newsym; |
13589 | } | |
13590 | bfd_elf32_swap_symbol_out (abfd, src, cdst, shndx); | |
13591 | } | |
13592 | ||
b294bdf8 MM |
13593 | /* Add the PT_ARM_EXIDX program header. */ |
13594 | ||
13595 | static bfd_boolean | |
906e58ca | 13596 | elf32_arm_modify_segment_map (bfd *abfd, |
b294bdf8 MM |
13597 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
13598 | { | |
13599 | struct elf_segment_map *m; | |
13600 | asection *sec; | |
13601 | ||
13602 | sec = bfd_get_section_by_name (abfd, ".ARM.exidx"); | |
13603 | if (sec != NULL && (sec->flags & SEC_LOAD) != 0) | |
13604 | { | |
13605 | /* If there is already a PT_ARM_EXIDX header, then we do not | |
13606 | want to add another one. This situation arises when running | |
13607 | "strip"; the input binary already has the header. */ | |
13608 | m = elf_tdata (abfd)->segment_map; | |
13609 | while (m && m->p_type != PT_ARM_EXIDX) | |
13610 | m = m->next; | |
13611 | if (!m) | |
13612 | { | |
13613 | m = bfd_zalloc (abfd, sizeof (struct elf_segment_map)); | |
13614 | if (m == NULL) | |
13615 | return FALSE; | |
13616 | m->p_type = PT_ARM_EXIDX; | |
13617 | m->count = 1; | |
13618 | m->sections[0] = sec; | |
13619 | ||
13620 | m->next = elf_tdata (abfd)->segment_map; | |
13621 | elf_tdata (abfd)->segment_map = m; | |
13622 | } | |
13623 | } | |
13624 | ||
13625 | return TRUE; | |
13626 | } | |
13627 | ||
13628 | /* We may add a PT_ARM_EXIDX program header. */ | |
13629 | ||
13630 | static int | |
a6b96beb AM |
13631 | elf32_arm_additional_program_headers (bfd *abfd, |
13632 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
b294bdf8 MM |
13633 | { |
13634 | asection *sec; | |
13635 | ||
13636 | sec = bfd_get_section_by_name (abfd, ".ARM.exidx"); | |
13637 | if (sec != NULL && (sec->flags & SEC_LOAD) != 0) | |
13638 | return 1; | |
13639 | else | |
13640 | return 0; | |
13641 | } | |
13642 | ||
fcb93ecf | 13643 | /* We have two function types: STT_FUNC and STT_ARM_TFUNC. */ |
906e58ca | 13644 | |
fcb93ecf PB |
13645 | static bfd_boolean |
13646 | elf32_arm_is_function_type (unsigned int type) | |
13647 | { | |
0f88be7a | 13648 | return (type == STT_FUNC) || (type == STT_ARM_TFUNC); |
fcb93ecf PB |
13649 | } |
13650 | ||
0beaef2b | 13651 | /* We use this to override swap_symbol_in and swap_symbol_out. */ |
906e58ca NC |
13652 | const struct elf_size_info elf32_arm_size_info = |
13653 | { | |
0beaef2b PB |
13654 | sizeof (Elf32_External_Ehdr), |
13655 | sizeof (Elf32_External_Phdr), | |
13656 | sizeof (Elf32_External_Shdr), | |
13657 | sizeof (Elf32_External_Rel), | |
13658 | sizeof (Elf32_External_Rela), | |
13659 | sizeof (Elf32_External_Sym), | |
13660 | sizeof (Elf32_External_Dyn), | |
13661 | sizeof (Elf_External_Note), | |
13662 | 4, | |
13663 | 1, | |
13664 | 32, 2, | |
13665 | ELFCLASS32, EV_CURRENT, | |
13666 | bfd_elf32_write_out_phdrs, | |
13667 | bfd_elf32_write_shdrs_and_ehdr, | |
1489a3a0 | 13668 | bfd_elf32_checksum_contents, |
0beaef2b PB |
13669 | bfd_elf32_write_relocs, |
13670 | elf32_arm_swap_symbol_in, | |
13671 | elf32_arm_swap_symbol_out, | |
13672 | bfd_elf32_slurp_reloc_table, | |
13673 | bfd_elf32_slurp_symbol_table, | |
13674 | bfd_elf32_swap_dyn_in, | |
13675 | bfd_elf32_swap_dyn_out, | |
13676 | bfd_elf32_swap_reloc_in, | |
13677 | bfd_elf32_swap_reloc_out, | |
13678 | bfd_elf32_swap_reloca_in, | |
13679 | bfd_elf32_swap_reloca_out | |
13680 | }; | |
13681 | ||
252b5132 RH |
13682 | #define ELF_ARCH bfd_arch_arm |
13683 | #define ELF_MACHINE_CODE EM_ARM | |
d0facd1b NC |
13684 | #ifdef __QNXTARGET__ |
13685 | #define ELF_MAXPAGESIZE 0x1000 | |
13686 | #else | |
f21f3fe0 | 13687 | #define ELF_MAXPAGESIZE 0x8000 |
d0facd1b | 13688 | #endif |
b1342370 | 13689 | #define ELF_MINPAGESIZE 0x1000 |
24718e3b | 13690 | #define ELF_COMMONPAGESIZE 0x1000 |
252b5132 | 13691 | |
ba93b8ac DJ |
13692 | #define bfd_elf32_mkobject elf32_arm_mkobject |
13693 | ||
99e4ae17 AJ |
13694 | #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data |
13695 | #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data | |
252b5132 RH |
13696 | #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags |
13697 | #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data | |
13698 | #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create | |
906e58ca | 13699 | #define bfd_elf32_bfd_link_hash_table_free elf32_arm_hash_table_free |
dc810e39 | 13700 | #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup |
157090f7 | 13701 | #define bfd_elf32_bfd_reloc_name_lookup elf32_arm_reloc_name_lookup |
252b5132 | 13702 | #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line |
4ab527b0 | 13703 | #define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info |
e489d0ae | 13704 | #define bfd_elf32_new_section_hook elf32_arm_new_section_hook |
3c9458e9 | 13705 | #define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol |
957c6e41 | 13706 | #define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup |
b25e3d87 | 13707 | #define bfd_elf32_bfd_free_cached_info elf32_arm_bfd_free_cached_info |
3e6b1042 | 13708 | #define bfd_elf32_bfd_final_link elf32_arm_final_link |
252b5132 RH |
13709 | |
13710 | #define elf_backend_get_symbol_type elf32_arm_get_symbol_type | |
13711 | #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook | |
6a5bb875 | 13712 | #define elf_backend_gc_mark_extra_sections elf32_arm_gc_mark_extra_sections |
252b5132 RH |
13713 | #define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook |
13714 | #define elf_backend_check_relocs elf32_arm_check_relocs | |
dc810e39 | 13715 | #define elf_backend_relocate_section elf32_arm_relocate_section |
e489d0ae | 13716 | #define elf_backend_write_section elf32_arm_write_section |
252b5132 | 13717 | #define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol |
5e681ec4 | 13718 | #define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections |
252b5132 RH |
13719 | #define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol |
13720 | #define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections | |
13721 | #define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections | |
74541ad4 | 13722 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
ba96a88f | 13723 | #define elf_backend_post_process_headers elf32_arm_post_process_headers |
99e4ae17 | 13724 | #define elf_backend_reloc_type_class elf32_arm_reloc_type_class |
c178919b | 13725 | #define elf_backend_object_p elf32_arm_object_p |
e16bb312 | 13726 | #define elf_backend_section_flags elf32_arm_section_flags |
40a18ebd NC |
13727 | #define elf_backend_fake_sections elf32_arm_fake_sections |
13728 | #define elf_backend_section_from_shdr elf32_arm_section_from_shdr | |
e16bb312 | 13729 | #define elf_backend_final_write_processing elf32_arm_final_write_processing |
5e681ec4 | 13730 | #define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol |
b7693d02 | 13731 | #define elf_backend_symbol_processing elf32_arm_symbol_processing |
0beaef2b | 13732 | #define elf_backend_size_info elf32_arm_size_info |
b294bdf8 | 13733 | #define elf_backend_modify_segment_map elf32_arm_modify_segment_map |
906e58ca NC |
13734 | #define elf_backend_additional_program_headers elf32_arm_additional_program_headers |
13735 | #define elf_backend_output_arch_local_syms elf32_arm_output_arch_local_syms | |
13736 | #define elf_backend_begin_write_processing elf32_arm_begin_write_processing | |
13737 | #define elf_backend_is_function_type elf32_arm_is_function_type | |
13738 | ||
13739 | #define elf_backend_can_refcount 1 | |
13740 | #define elf_backend_can_gc_sections 1 | |
13741 | #define elf_backend_plt_readonly 1 | |
13742 | #define elf_backend_want_got_plt 1 | |
13743 | #define elf_backend_want_plt_sym 0 | |
13744 | #define elf_backend_may_use_rel_p 1 | |
13745 | #define elf_backend_may_use_rela_p 0 | |
4e7fd91e | 13746 | #define elf_backend_default_use_rela_p 0 |
252b5132 | 13747 | |
04f7c78d | 13748 | #define elf_backend_got_header_size 12 |
04f7c78d | 13749 | |
906e58ca NC |
13750 | #undef elf_backend_obj_attrs_vendor |
13751 | #define elf_backend_obj_attrs_vendor "aeabi" | |
13752 | #undef elf_backend_obj_attrs_section | |
13753 | #define elf_backend_obj_attrs_section ".ARM.attributes" | |
13754 | #undef elf_backend_obj_attrs_arg_type | |
13755 | #define elf_backend_obj_attrs_arg_type elf32_arm_obj_attrs_arg_type | |
13756 | #undef elf_backend_obj_attrs_section_type | |
104d59d1 | 13757 | #define elf_backend_obj_attrs_section_type SHT_ARM_ATTRIBUTES |
5aa6ff7c | 13758 | #define elf_backend_obj_attrs_order elf32_arm_obj_attrs_order |
104d59d1 | 13759 | |
252b5132 | 13760 | #include "elf32-target.h" |
7f266840 | 13761 | |
906e58ca | 13762 | /* VxWorks Targets. */ |
4e7fd91e | 13763 | |
906e58ca | 13764 | #undef TARGET_LITTLE_SYM |
4e7fd91e | 13765 | #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec |
906e58ca | 13766 | #undef TARGET_LITTLE_NAME |
4e7fd91e | 13767 | #define TARGET_LITTLE_NAME "elf32-littlearm-vxworks" |
906e58ca | 13768 | #undef TARGET_BIG_SYM |
4e7fd91e | 13769 | #define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec |
906e58ca | 13770 | #undef TARGET_BIG_NAME |
4e7fd91e PB |
13771 | #define TARGET_BIG_NAME "elf32-bigarm-vxworks" |
13772 | ||
13773 | /* Like elf32_arm_link_hash_table_create -- but overrides | |
13774 | appropriately for VxWorks. */ | |
906e58ca | 13775 | |
4e7fd91e PB |
13776 | static struct bfd_link_hash_table * |
13777 | elf32_arm_vxworks_link_hash_table_create (bfd *abfd) | |
13778 | { | |
13779 | struct bfd_link_hash_table *ret; | |
13780 | ||
13781 | ret = elf32_arm_link_hash_table_create (abfd); | |
13782 | if (ret) | |
13783 | { | |
13784 | struct elf32_arm_link_hash_table *htab | |
00a97672 | 13785 | = (struct elf32_arm_link_hash_table *) ret; |
4e7fd91e | 13786 | htab->use_rel = 0; |
00a97672 | 13787 | htab->vxworks_p = 1; |
4e7fd91e PB |
13788 | } |
13789 | return ret; | |
906e58ca | 13790 | } |
4e7fd91e | 13791 | |
00a97672 RS |
13792 | static void |
13793 | elf32_arm_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker) | |
13794 | { | |
13795 | elf32_arm_final_write_processing (abfd, linker); | |
13796 | elf_vxworks_final_write_processing (abfd, linker); | |
13797 | } | |
13798 | ||
906e58ca | 13799 | #undef elf32_bed |
4e7fd91e PB |
13800 | #define elf32_bed elf32_arm_vxworks_bed |
13801 | ||
906e58ca NC |
13802 | #undef bfd_elf32_bfd_link_hash_table_create |
13803 | #define bfd_elf32_bfd_link_hash_table_create elf32_arm_vxworks_link_hash_table_create | |
13804 | #undef elf_backend_add_symbol_hook | |
13805 | #define elf_backend_add_symbol_hook elf_vxworks_add_symbol_hook | |
13806 | #undef elf_backend_final_write_processing | |
13807 | #define elf_backend_final_write_processing elf32_arm_vxworks_final_write_processing | |
13808 | #undef elf_backend_emit_relocs | |
13809 | #define elf_backend_emit_relocs elf_vxworks_emit_relocs | |
4e7fd91e | 13810 | |
906e58ca | 13811 | #undef elf_backend_may_use_rel_p |
00a97672 | 13812 | #define elf_backend_may_use_rel_p 0 |
906e58ca | 13813 | #undef elf_backend_may_use_rela_p |
00a97672 | 13814 | #define elf_backend_may_use_rela_p 1 |
906e58ca | 13815 | #undef elf_backend_default_use_rela_p |
00a97672 | 13816 | #define elf_backend_default_use_rela_p 1 |
906e58ca | 13817 | #undef elf_backend_want_plt_sym |
00a97672 | 13818 | #define elf_backend_want_plt_sym 1 |
906e58ca | 13819 | #undef ELF_MAXPAGESIZE |
00a97672 | 13820 | #define ELF_MAXPAGESIZE 0x1000 |
4e7fd91e PB |
13821 | |
13822 | #include "elf32-target.h" | |
13823 | ||
13824 | ||
906e58ca | 13825 | /* Symbian OS Targets. */ |
7f266840 | 13826 | |
906e58ca | 13827 | #undef TARGET_LITTLE_SYM |
7f266840 | 13828 | #define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec |
906e58ca | 13829 | #undef TARGET_LITTLE_NAME |
7f266840 | 13830 | #define TARGET_LITTLE_NAME "elf32-littlearm-symbian" |
906e58ca | 13831 | #undef TARGET_BIG_SYM |
7f266840 | 13832 | #define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec |
906e58ca | 13833 | #undef TARGET_BIG_NAME |
7f266840 DJ |
13834 | #define TARGET_BIG_NAME "elf32-bigarm-symbian" |
13835 | ||
13836 | /* Like elf32_arm_link_hash_table_create -- but overrides | |
13837 | appropriately for Symbian OS. */ | |
906e58ca | 13838 | |
7f266840 DJ |
13839 | static struct bfd_link_hash_table * |
13840 | elf32_arm_symbian_link_hash_table_create (bfd *abfd) | |
13841 | { | |
13842 | struct bfd_link_hash_table *ret; | |
13843 | ||
13844 | ret = elf32_arm_link_hash_table_create (abfd); | |
13845 | if (ret) | |
13846 | { | |
13847 | struct elf32_arm_link_hash_table *htab | |
13848 | = (struct elf32_arm_link_hash_table *)ret; | |
13849 | /* There is no PLT header for Symbian OS. */ | |
13850 | htab->plt_header_size = 0; | |
95720a86 DJ |
13851 | /* The PLT entries are each one instruction and one word. */ |
13852 | htab->plt_entry_size = 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry); | |
7f266840 | 13853 | htab->symbian_p = 1; |
33bfe774 JB |
13854 | /* Symbian uses armv5t or above, so use_blx is always true. */ |
13855 | htab->use_blx = 1; | |
67687978 | 13856 | htab->root.is_relocatable_executable = 1; |
7f266840 DJ |
13857 | } |
13858 | return ret; | |
906e58ca | 13859 | } |
7f266840 | 13860 | |
b35d266b | 13861 | static const struct bfd_elf_special_section |
551b43fd | 13862 | elf32_arm_symbian_special_sections[] = |
7f266840 | 13863 | { |
5cd3778d MM |
13864 | /* In a BPABI executable, the dynamic linking sections do not go in |
13865 | the loadable read-only segment. The post-linker may wish to | |
13866 | refer to these sections, but they are not part of the final | |
13867 | program image. */ | |
0112cd26 NC |
13868 | { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, 0 }, |
13869 | { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, 0 }, | |
13870 | { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, 0 }, | |
13871 | { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, 0 }, | |
13872 | { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, 0 }, | |
5cd3778d MM |
13873 | /* These sections do not need to be writable as the SymbianOS |
13874 | postlinker will arrange things so that no dynamic relocation is | |
13875 | required. */ | |
0112cd26 NC |
13876 | { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC }, |
13877 | { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC }, | |
13878 | { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC }, | |
13879 | { NULL, 0, 0, 0, 0 } | |
7f266840 DJ |
13880 | }; |
13881 | ||
c3c76620 | 13882 | static void |
906e58ca | 13883 | elf32_arm_symbian_begin_write_processing (bfd *abfd, |
a4fd1a8e | 13884 | struct bfd_link_info *link_info) |
c3c76620 MM |
13885 | { |
13886 | /* BPABI objects are never loaded directly by an OS kernel; they are | |
13887 | processed by a postlinker first, into an OS-specific format. If | |
13888 | the D_PAGED bit is set on the file, BFD will align segments on | |
13889 | page boundaries, so that an OS can directly map the file. With | |
13890 | BPABI objects, that just results in wasted space. In addition, | |
13891 | because we clear the D_PAGED bit, map_sections_to_segments will | |
13892 | recognize that the program headers should not be mapped into any | |
13893 | loadable segment. */ | |
13894 | abfd->flags &= ~D_PAGED; | |
906e58ca | 13895 | elf32_arm_begin_write_processing (abfd, link_info); |
c3c76620 | 13896 | } |
7f266840 DJ |
13897 | |
13898 | static bfd_boolean | |
906e58ca | 13899 | elf32_arm_symbian_modify_segment_map (bfd *abfd, |
b294bdf8 | 13900 | struct bfd_link_info *info) |
7f266840 DJ |
13901 | { |
13902 | struct elf_segment_map *m; | |
13903 | asection *dynsec; | |
13904 | ||
7f266840 DJ |
13905 | /* BPABI shared libraries and executables should have a PT_DYNAMIC |
13906 | segment. However, because the .dynamic section is not marked | |
13907 | with SEC_LOAD, the generic ELF code will not create such a | |
13908 | segment. */ | |
13909 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); | |
13910 | if (dynsec) | |
13911 | { | |
8ded5a0f AM |
13912 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
13913 | if (m->p_type == PT_DYNAMIC) | |
13914 | break; | |
13915 | ||
13916 | if (m == NULL) | |
13917 | { | |
13918 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); | |
13919 | m->next = elf_tdata (abfd)->segment_map; | |
13920 | elf_tdata (abfd)->segment_map = m; | |
13921 | } | |
7f266840 DJ |
13922 | } |
13923 | ||
b294bdf8 MM |
13924 | /* Also call the generic arm routine. */ |
13925 | return elf32_arm_modify_segment_map (abfd, info); | |
7f266840 DJ |
13926 | } |
13927 | ||
95720a86 DJ |
13928 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
13929 | or (bfd_vma) -1 if it should not be included. */ | |
13930 | ||
13931 | static bfd_vma | |
13932 | elf32_arm_symbian_plt_sym_val (bfd_vma i, const asection *plt, | |
13933 | const arelent *rel ATTRIBUTE_UNUSED) | |
13934 | { | |
13935 | return plt->vma + 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry) * i; | |
13936 | } | |
13937 | ||
13938 | ||
8029a119 | 13939 | #undef elf32_bed |
7f266840 DJ |
13940 | #define elf32_bed elf32_arm_symbian_bed |
13941 | ||
13942 | /* The dynamic sections are not allocated on SymbianOS; the postlinker | |
13943 | will process them and then discard them. */ | |
906e58ca | 13944 | #undef ELF_DYNAMIC_SEC_FLAGS |
7f266840 DJ |
13945 | #define ELF_DYNAMIC_SEC_FLAGS \ |
13946 | (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED) | |
13947 | ||
00a97672 | 13948 | #undef elf_backend_add_symbol_hook |
00a97672 | 13949 | #undef elf_backend_emit_relocs |
c3c76620 | 13950 | |
906e58ca NC |
13951 | #undef bfd_elf32_bfd_link_hash_table_create |
13952 | #define bfd_elf32_bfd_link_hash_table_create elf32_arm_symbian_link_hash_table_create | |
13953 | #undef elf_backend_special_sections | |
13954 | #define elf_backend_special_sections elf32_arm_symbian_special_sections | |
13955 | #undef elf_backend_begin_write_processing | |
13956 | #define elf_backend_begin_write_processing elf32_arm_symbian_begin_write_processing | |
13957 | #undef elf_backend_final_write_processing | |
13958 | #define elf_backend_final_write_processing elf32_arm_final_write_processing | |
13959 | ||
13960 | #undef elf_backend_modify_segment_map | |
7f266840 DJ |
13961 | #define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map |
13962 | ||
13963 | /* There is no .got section for BPABI objects, and hence no header. */ | |
906e58ca | 13964 | #undef elf_backend_got_header_size |
7f266840 DJ |
13965 | #define elf_backend_got_header_size 0 |
13966 | ||
13967 | /* Similarly, there is no .got.plt section. */ | |
906e58ca | 13968 | #undef elf_backend_want_got_plt |
7f266840 DJ |
13969 | #define elf_backend_want_got_plt 0 |
13970 | ||
906e58ca | 13971 | #undef elf_backend_plt_sym_val |
95720a86 DJ |
13972 | #define elf_backend_plt_sym_val elf32_arm_symbian_plt_sym_val |
13973 | ||
906e58ca | 13974 | #undef elf_backend_may_use_rel_p |
00a97672 | 13975 | #define elf_backend_may_use_rel_p 1 |
906e58ca | 13976 | #undef elf_backend_may_use_rela_p |
00a97672 | 13977 | #define elf_backend_may_use_rela_p 0 |
906e58ca | 13978 | #undef elf_backend_default_use_rela_p |
00a97672 | 13979 | #define elf_backend_default_use_rela_p 0 |
906e58ca | 13980 | #undef elf_backend_want_plt_sym |
00a97672 | 13981 | #define elf_backend_want_plt_sym 0 |
906e58ca | 13982 | #undef ELF_MAXPAGESIZE |
00a97672 | 13983 | #define ELF_MAXPAGESIZE 0x8000 |
4e7fd91e | 13984 | |
7f266840 | 13985 | #include "elf32-target.h" |