Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* 32-bit ELF support for ARM |
e44a2c9c AM |
2 | Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, |
3 | 2008 Free Software Foundation, Inc. | |
252b5132 RH |
4 | |
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
252b5132 RH |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
20 | MA 02110-1301, USA. */ | |
252b5132 | 21 | |
7f266840 | 22 | #include "sysdep.h" |
3db64b00 | 23 | #include "bfd.h" |
00a97672 | 24 | #include "libiberty.h" |
7f266840 DJ |
25 | #include "libbfd.h" |
26 | #include "elf-bfd.h" | |
00a97672 | 27 | #include "elf-vxworks.h" |
ee065d83 | 28 | #include "elf/arm.h" |
7f266840 | 29 | |
00a97672 RS |
30 | /* Return the relocation section associated with NAME. HTAB is the |
31 | bfd's elf32_arm_link_hash_entry. */ | |
32 | #define RELOC_SECTION(HTAB, NAME) \ | |
33 | ((HTAB)->use_rel ? ".rel" NAME : ".rela" NAME) | |
34 | ||
35 | /* Return size of a relocation entry. HTAB is the bfd's | |
36 | elf32_arm_link_hash_entry. */ | |
37 | #define RELOC_SIZE(HTAB) \ | |
38 | ((HTAB)->use_rel \ | |
39 | ? sizeof (Elf32_External_Rel) \ | |
40 | : sizeof (Elf32_External_Rela)) | |
41 | ||
42 | /* Return function to swap relocations in. HTAB is the bfd's | |
43 | elf32_arm_link_hash_entry. */ | |
44 | #define SWAP_RELOC_IN(HTAB) \ | |
45 | ((HTAB)->use_rel \ | |
46 | ? bfd_elf32_swap_reloc_in \ | |
47 | : bfd_elf32_swap_reloca_in) | |
48 | ||
49 | /* Return function to swap relocations out. HTAB is the bfd's | |
50 | elf32_arm_link_hash_entry. */ | |
51 | #define SWAP_RELOC_OUT(HTAB) \ | |
52 | ((HTAB)->use_rel \ | |
53 | ? bfd_elf32_swap_reloc_out \ | |
54 | : bfd_elf32_swap_reloca_out) | |
55 | ||
7f266840 DJ |
56 | #define elf_info_to_howto 0 |
57 | #define elf_info_to_howto_rel elf32_arm_info_to_howto | |
58 | ||
59 | #define ARM_ELF_ABI_VERSION 0 | |
60 | #define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM | |
61 | ||
24718e3b | 62 | static struct elf_backend_data elf32_arm_vxworks_bed; |
00a97672 | 63 | |
7f266840 DJ |
64 | /* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g. |
65 | R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO | |
66 | in that slot. */ | |
67 | ||
c19d1205 | 68 | static reloc_howto_type elf32_arm_howto_table_1[] = |
7f266840 | 69 | { |
8029a119 | 70 | /* No relocation. */ |
7f266840 DJ |
71 | HOWTO (R_ARM_NONE, /* type */ |
72 | 0, /* rightshift */ | |
73 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
74 | 0, /* bitsize */ | |
75 | FALSE, /* pc_relative */ | |
76 | 0, /* bitpos */ | |
77 | complain_overflow_dont,/* complain_on_overflow */ | |
78 | bfd_elf_generic_reloc, /* special_function */ | |
79 | "R_ARM_NONE", /* name */ | |
80 | FALSE, /* partial_inplace */ | |
81 | 0, /* src_mask */ | |
82 | 0, /* dst_mask */ | |
83 | FALSE), /* pcrel_offset */ | |
84 | ||
85 | HOWTO (R_ARM_PC24, /* type */ | |
86 | 2, /* rightshift */ | |
87 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
88 | 24, /* bitsize */ | |
89 | TRUE, /* pc_relative */ | |
90 | 0, /* bitpos */ | |
91 | complain_overflow_signed,/* complain_on_overflow */ | |
92 | bfd_elf_generic_reloc, /* special_function */ | |
93 | "R_ARM_PC24", /* name */ | |
94 | FALSE, /* partial_inplace */ | |
95 | 0x00ffffff, /* src_mask */ | |
96 | 0x00ffffff, /* dst_mask */ | |
97 | TRUE), /* pcrel_offset */ | |
98 | ||
99 | /* 32 bit absolute */ | |
100 | HOWTO (R_ARM_ABS32, /* type */ | |
101 | 0, /* rightshift */ | |
102 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
103 | 32, /* bitsize */ | |
104 | FALSE, /* pc_relative */ | |
105 | 0, /* bitpos */ | |
106 | complain_overflow_bitfield,/* complain_on_overflow */ | |
107 | bfd_elf_generic_reloc, /* special_function */ | |
108 | "R_ARM_ABS32", /* name */ | |
109 | FALSE, /* partial_inplace */ | |
110 | 0xffffffff, /* src_mask */ | |
111 | 0xffffffff, /* dst_mask */ | |
112 | FALSE), /* pcrel_offset */ | |
113 | ||
114 | /* standard 32bit pc-relative reloc */ | |
115 | HOWTO (R_ARM_REL32, /* type */ | |
116 | 0, /* rightshift */ | |
117 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
118 | 32, /* bitsize */ | |
119 | TRUE, /* pc_relative */ | |
120 | 0, /* bitpos */ | |
121 | complain_overflow_bitfield,/* complain_on_overflow */ | |
122 | bfd_elf_generic_reloc, /* special_function */ | |
123 | "R_ARM_REL32", /* name */ | |
124 | FALSE, /* partial_inplace */ | |
125 | 0xffffffff, /* src_mask */ | |
126 | 0xffffffff, /* dst_mask */ | |
127 | TRUE), /* pcrel_offset */ | |
128 | ||
c19d1205 | 129 | /* 8 bit absolute - R_ARM_LDR_PC_G0 in AAELF */ |
4962c51a | 130 | HOWTO (R_ARM_LDR_PC_G0, /* type */ |
7f266840 DJ |
131 | 0, /* rightshift */ |
132 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
4962c51a MS |
133 | 32, /* bitsize */ |
134 | TRUE, /* pc_relative */ | |
7f266840 | 135 | 0, /* bitpos */ |
4962c51a | 136 | complain_overflow_dont,/* complain_on_overflow */ |
7f266840 | 137 | bfd_elf_generic_reloc, /* special_function */ |
4962c51a | 138 | "R_ARM_LDR_PC_G0", /* name */ |
7f266840 | 139 | FALSE, /* partial_inplace */ |
4962c51a MS |
140 | 0xffffffff, /* src_mask */ |
141 | 0xffffffff, /* dst_mask */ | |
142 | TRUE), /* pcrel_offset */ | |
7f266840 DJ |
143 | |
144 | /* 16 bit absolute */ | |
145 | HOWTO (R_ARM_ABS16, /* type */ | |
146 | 0, /* rightshift */ | |
147 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
148 | 16, /* bitsize */ | |
149 | FALSE, /* pc_relative */ | |
150 | 0, /* bitpos */ | |
151 | complain_overflow_bitfield,/* complain_on_overflow */ | |
152 | bfd_elf_generic_reloc, /* special_function */ | |
153 | "R_ARM_ABS16", /* name */ | |
154 | FALSE, /* partial_inplace */ | |
155 | 0x0000ffff, /* src_mask */ | |
156 | 0x0000ffff, /* dst_mask */ | |
157 | FALSE), /* pcrel_offset */ | |
158 | ||
159 | /* 12 bit absolute */ | |
160 | HOWTO (R_ARM_ABS12, /* type */ | |
161 | 0, /* rightshift */ | |
162 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
163 | 12, /* bitsize */ | |
164 | FALSE, /* pc_relative */ | |
165 | 0, /* bitpos */ | |
166 | complain_overflow_bitfield,/* complain_on_overflow */ | |
167 | bfd_elf_generic_reloc, /* special_function */ | |
168 | "R_ARM_ABS12", /* name */ | |
169 | FALSE, /* partial_inplace */ | |
00a97672 RS |
170 | 0x00000fff, /* src_mask */ |
171 | 0x00000fff, /* dst_mask */ | |
7f266840 DJ |
172 | FALSE), /* pcrel_offset */ |
173 | ||
174 | HOWTO (R_ARM_THM_ABS5, /* type */ | |
175 | 6, /* rightshift */ | |
176 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
177 | 5, /* bitsize */ | |
178 | FALSE, /* pc_relative */ | |
179 | 0, /* bitpos */ | |
180 | complain_overflow_bitfield,/* complain_on_overflow */ | |
181 | bfd_elf_generic_reloc, /* special_function */ | |
182 | "R_ARM_THM_ABS5", /* name */ | |
183 | FALSE, /* partial_inplace */ | |
184 | 0x000007e0, /* src_mask */ | |
185 | 0x000007e0, /* dst_mask */ | |
186 | FALSE), /* pcrel_offset */ | |
187 | ||
188 | /* 8 bit absolute */ | |
189 | HOWTO (R_ARM_ABS8, /* type */ | |
190 | 0, /* rightshift */ | |
191 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
192 | 8, /* bitsize */ | |
193 | FALSE, /* pc_relative */ | |
194 | 0, /* bitpos */ | |
195 | complain_overflow_bitfield,/* complain_on_overflow */ | |
196 | bfd_elf_generic_reloc, /* special_function */ | |
197 | "R_ARM_ABS8", /* name */ | |
198 | FALSE, /* partial_inplace */ | |
199 | 0x000000ff, /* src_mask */ | |
200 | 0x000000ff, /* dst_mask */ | |
201 | FALSE), /* pcrel_offset */ | |
202 | ||
203 | HOWTO (R_ARM_SBREL32, /* type */ | |
204 | 0, /* rightshift */ | |
205 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
206 | 32, /* bitsize */ | |
207 | FALSE, /* pc_relative */ | |
208 | 0, /* bitpos */ | |
209 | complain_overflow_dont,/* complain_on_overflow */ | |
210 | bfd_elf_generic_reloc, /* special_function */ | |
211 | "R_ARM_SBREL32", /* name */ | |
212 | FALSE, /* partial_inplace */ | |
213 | 0xffffffff, /* src_mask */ | |
214 | 0xffffffff, /* dst_mask */ | |
215 | FALSE), /* pcrel_offset */ | |
216 | ||
c19d1205 | 217 | HOWTO (R_ARM_THM_CALL, /* type */ |
7f266840 DJ |
218 | 1, /* rightshift */ |
219 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
e95de063 | 220 | 25, /* bitsize */ |
7f266840 DJ |
221 | TRUE, /* pc_relative */ |
222 | 0, /* bitpos */ | |
223 | complain_overflow_signed,/* complain_on_overflow */ | |
224 | bfd_elf_generic_reloc, /* special_function */ | |
c19d1205 | 225 | "R_ARM_THM_CALL", /* name */ |
7f266840 DJ |
226 | FALSE, /* partial_inplace */ |
227 | 0x07ff07ff, /* src_mask */ | |
228 | 0x07ff07ff, /* dst_mask */ | |
229 | TRUE), /* pcrel_offset */ | |
230 | ||
231 | HOWTO (R_ARM_THM_PC8, /* type */ | |
232 | 1, /* rightshift */ | |
233 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
234 | 8, /* bitsize */ | |
235 | TRUE, /* pc_relative */ | |
236 | 0, /* bitpos */ | |
237 | complain_overflow_signed,/* complain_on_overflow */ | |
238 | bfd_elf_generic_reloc, /* special_function */ | |
239 | "R_ARM_THM_PC8", /* name */ | |
240 | FALSE, /* partial_inplace */ | |
241 | 0x000000ff, /* src_mask */ | |
242 | 0x000000ff, /* dst_mask */ | |
243 | TRUE), /* pcrel_offset */ | |
244 | ||
c19d1205 | 245 | HOWTO (R_ARM_BREL_ADJ, /* type */ |
7f266840 DJ |
246 | 1, /* rightshift */ |
247 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
c19d1205 ZW |
248 | 32, /* bitsize */ |
249 | FALSE, /* pc_relative */ | |
7f266840 DJ |
250 | 0, /* bitpos */ |
251 | complain_overflow_signed,/* complain_on_overflow */ | |
252 | bfd_elf_generic_reloc, /* special_function */ | |
c19d1205 | 253 | "R_ARM_BREL_ADJ", /* name */ |
7f266840 | 254 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
255 | 0xffffffff, /* src_mask */ |
256 | 0xffffffff, /* dst_mask */ | |
257 | FALSE), /* pcrel_offset */ | |
7f266840 DJ |
258 | |
259 | HOWTO (R_ARM_SWI24, /* type */ | |
260 | 0, /* rightshift */ | |
261 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
262 | 0, /* bitsize */ | |
263 | FALSE, /* pc_relative */ | |
264 | 0, /* bitpos */ | |
265 | complain_overflow_signed,/* complain_on_overflow */ | |
266 | bfd_elf_generic_reloc, /* special_function */ | |
267 | "R_ARM_SWI24", /* name */ | |
268 | FALSE, /* partial_inplace */ | |
269 | 0x00000000, /* src_mask */ | |
270 | 0x00000000, /* dst_mask */ | |
271 | FALSE), /* pcrel_offset */ | |
272 | ||
273 | HOWTO (R_ARM_THM_SWI8, /* type */ | |
274 | 0, /* rightshift */ | |
275 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
276 | 0, /* bitsize */ | |
277 | FALSE, /* pc_relative */ | |
278 | 0, /* bitpos */ | |
279 | complain_overflow_signed,/* complain_on_overflow */ | |
280 | bfd_elf_generic_reloc, /* special_function */ | |
281 | "R_ARM_SWI8", /* name */ | |
282 | FALSE, /* partial_inplace */ | |
283 | 0x00000000, /* src_mask */ | |
284 | 0x00000000, /* dst_mask */ | |
285 | FALSE), /* pcrel_offset */ | |
286 | ||
287 | /* BLX instruction for the ARM. */ | |
288 | HOWTO (R_ARM_XPC25, /* type */ | |
289 | 2, /* rightshift */ | |
290 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
291 | 25, /* bitsize */ | |
292 | TRUE, /* pc_relative */ | |
293 | 0, /* bitpos */ | |
294 | complain_overflow_signed,/* complain_on_overflow */ | |
295 | bfd_elf_generic_reloc, /* special_function */ | |
296 | "R_ARM_XPC25", /* name */ | |
297 | FALSE, /* partial_inplace */ | |
298 | 0x00ffffff, /* src_mask */ | |
299 | 0x00ffffff, /* dst_mask */ | |
300 | TRUE), /* pcrel_offset */ | |
301 | ||
302 | /* BLX instruction for the Thumb. */ | |
303 | HOWTO (R_ARM_THM_XPC22, /* type */ | |
304 | 2, /* rightshift */ | |
305 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
306 | 22, /* bitsize */ | |
307 | TRUE, /* pc_relative */ | |
308 | 0, /* bitpos */ | |
309 | complain_overflow_signed,/* complain_on_overflow */ | |
310 | bfd_elf_generic_reloc, /* special_function */ | |
311 | "R_ARM_THM_XPC22", /* name */ | |
312 | FALSE, /* partial_inplace */ | |
313 | 0x07ff07ff, /* src_mask */ | |
314 | 0x07ff07ff, /* dst_mask */ | |
315 | TRUE), /* pcrel_offset */ | |
316 | ||
ba93b8ac | 317 | /* Dynamic TLS relocations. */ |
7f266840 | 318 | |
ba93b8ac DJ |
319 | HOWTO (R_ARM_TLS_DTPMOD32, /* type */ |
320 | 0, /* rightshift */ | |
321 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
322 | 32, /* bitsize */ | |
323 | FALSE, /* pc_relative */ | |
324 | 0, /* bitpos */ | |
325 | complain_overflow_bitfield,/* complain_on_overflow */ | |
326 | bfd_elf_generic_reloc, /* special_function */ | |
327 | "R_ARM_TLS_DTPMOD32", /* name */ | |
328 | TRUE, /* partial_inplace */ | |
329 | 0xffffffff, /* src_mask */ | |
330 | 0xffffffff, /* dst_mask */ | |
331 | FALSE), /* pcrel_offset */ | |
7f266840 | 332 | |
ba93b8ac DJ |
333 | HOWTO (R_ARM_TLS_DTPOFF32, /* type */ |
334 | 0, /* rightshift */ | |
335 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
336 | 32, /* bitsize */ | |
337 | FALSE, /* pc_relative */ | |
338 | 0, /* bitpos */ | |
339 | complain_overflow_bitfield,/* complain_on_overflow */ | |
340 | bfd_elf_generic_reloc, /* special_function */ | |
341 | "R_ARM_TLS_DTPOFF32", /* name */ | |
342 | TRUE, /* partial_inplace */ | |
343 | 0xffffffff, /* src_mask */ | |
344 | 0xffffffff, /* dst_mask */ | |
345 | FALSE), /* pcrel_offset */ | |
7f266840 | 346 | |
ba93b8ac DJ |
347 | HOWTO (R_ARM_TLS_TPOFF32, /* type */ |
348 | 0, /* rightshift */ | |
349 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
350 | 32, /* bitsize */ | |
351 | FALSE, /* pc_relative */ | |
352 | 0, /* bitpos */ | |
353 | complain_overflow_bitfield,/* complain_on_overflow */ | |
354 | bfd_elf_generic_reloc, /* special_function */ | |
355 | "R_ARM_TLS_TPOFF32", /* name */ | |
356 | TRUE, /* partial_inplace */ | |
357 | 0xffffffff, /* src_mask */ | |
358 | 0xffffffff, /* dst_mask */ | |
359 | FALSE), /* pcrel_offset */ | |
7f266840 DJ |
360 | |
361 | /* Relocs used in ARM Linux */ | |
362 | ||
363 | HOWTO (R_ARM_COPY, /* type */ | |
364 | 0, /* rightshift */ | |
365 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
366 | 32, /* bitsize */ | |
367 | FALSE, /* pc_relative */ | |
368 | 0, /* bitpos */ | |
369 | complain_overflow_bitfield,/* complain_on_overflow */ | |
370 | bfd_elf_generic_reloc, /* special_function */ | |
371 | "R_ARM_COPY", /* name */ | |
372 | TRUE, /* partial_inplace */ | |
373 | 0xffffffff, /* src_mask */ | |
374 | 0xffffffff, /* dst_mask */ | |
375 | FALSE), /* pcrel_offset */ | |
376 | ||
377 | HOWTO (R_ARM_GLOB_DAT, /* type */ | |
378 | 0, /* rightshift */ | |
379 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
380 | 32, /* bitsize */ | |
381 | FALSE, /* pc_relative */ | |
382 | 0, /* bitpos */ | |
383 | complain_overflow_bitfield,/* complain_on_overflow */ | |
384 | bfd_elf_generic_reloc, /* special_function */ | |
385 | "R_ARM_GLOB_DAT", /* name */ | |
386 | TRUE, /* partial_inplace */ | |
387 | 0xffffffff, /* src_mask */ | |
388 | 0xffffffff, /* dst_mask */ | |
389 | FALSE), /* pcrel_offset */ | |
390 | ||
391 | HOWTO (R_ARM_JUMP_SLOT, /* type */ | |
392 | 0, /* rightshift */ | |
393 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
394 | 32, /* bitsize */ | |
395 | FALSE, /* pc_relative */ | |
396 | 0, /* bitpos */ | |
397 | complain_overflow_bitfield,/* complain_on_overflow */ | |
398 | bfd_elf_generic_reloc, /* special_function */ | |
399 | "R_ARM_JUMP_SLOT", /* name */ | |
400 | TRUE, /* partial_inplace */ | |
401 | 0xffffffff, /* src_mask */ | |
402 | 0xffffffff, /* dst_mask */ | |
403 | FALSE), /* pcrel_offset */ | |
404 | ||
405 | HOWTO (R_ARM_RELATIVE, /* type */ | |
406 | 0, /* rightshift */ | |
407 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
408 | 32, /* bitsize */ | |
409 | FALSE, /* pc_relative */ | |
410 | 0, /* bitpos */ | |
411 | complain_overflow_bitfield,/* complain_on_overflow */ | |
412 | bfd_elf_generic_reloc, /* special_function */ | |
413 | "R_ARM_RELATIVE", /* name */ | |
414 | TRUE, /* partial_inplace */ | |
415 | 0xffffffff, /* src_mask */ | |
416 | 0xffffffff, /* dst_mask */ | |
417 | FALSE), /* pcrel_offset */ | |
418 | ||
c19d1205 | 419 | HOWTO (R_ARM_GOTOFF32, /* type */ |
7f266840 DJ |
420 | 0, /* rightshift */ |
421 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
422 | 32, /* bitsize */ | |
423 | FALSE, /* pc_relative */ | |
424 | 0, /* bitpos */ | |
425 | complain_overflow_bitfield,/* complain_on_overflow */ | |
426 | bfd_elf_generic_reloc, /* special_function */ | |
c19d1205 | 427 | "R_ARM_GOTOFF32", /* name */ |
7f266840 DJ |
428 | TRUE, /* partial_inplace */ |
429 | 0xffffffff, /* src_mask */ | |
430 | 0xffffffff, /* dst_mask */ | |
431 | FALSE), /* pcrel_offset */ | |
432 | ||
433 | HOWTO (R_ARM_GOTPC, /* type */ | |
434 | 0, /* rightshift */ | |
435 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
436 | 32, /* bitsize */ | |
437 | TRUE, /* pc_relative */ | |
438 | 0, /* bitpos */ | |
439 | complain_overflow_bitfield,/* complain_on_overflow */ | |
440 | bfd_elf_generic_reloc, /* special_function */ | |
441 | "R_ARM_GOTPC", /* name */ | |
442 | TRUE, /* partial_inplace */ | |
443 | 0xffffffff, /* src_mask */ | |
444 | 0xffffffff, /* dst_mask */ | |
445 | TRUE), /* pcrel_offset */ | |
446 | ||
447 | HOWTO (R_ARM_GOT32, /* type */ | |
448 | 0, /* rightshift */ | |
449 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
450 | 32, /* bitsize */ | |
451 | FALSE, /* pc_relative */ | |
452 | 0, /* bitpos */ | |
453 | complain_overflow_bitfield,/* complain_on_overflow */ | |
454 | bfd_elf_generic_reloc, /* special_function */ | |
455 | "R_ARM_GOT32", /* name */ | |
456 | TRUE, /* partial_inplace */ | |
457 | 0xffffffff, /* src_mask */ | |
458 | 0xffffffff, /* dst_mask */ | |
459 | FALSE), /* pcrel_offset */ | |
460 | ||
461 | HOWTO (R_ARM_PLT32, /* type */ | |
462 | 2, /* rightshift */ | |
463 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
ce490eda | 464 | 24, /* bitsize */ |
7f266840 DJ |
465 | TRUE, /* pc_relative */ |
466 | 0, /* bitpos */ | |
467 | complain_overflow_bitfield,/* complain_on_overflow */ | |
468 | bfd_elf_generic_reloc, /* special_function */ | |
469 | "R_ARM_PLT32", /* name */ | |
ce490eda | 470 | FALSE, /* partial_inplace */ |
7f266840 DJ |
471 | 0x00ffffff, /* src_mask */ |
472 | 0x00ffffff, /* dst_mask */ | |
473 | TRUE), /* pcrel_offset */ | |
474 | ||
475 | HOWTO (R_ARM_CALL, /* type */ | |
476 | 2, /* rightshift */ | |
477 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
478 | 24, /* bitsize */ | |
479 | TRUE, /* pc_relative */ | |
480 | 0, /* bitpos */ | |
481 | complain_overflow_signed,/* complain_on_overflow */ | |
482 | bfd_elf_generic_reloc, /* special_function */ | |
483 | "R_ARM_CALL", /* name */ | |
484 | FALSE, /* partial_inplace */ | |
485 | 0x00ffffff, /* src_mask */ | |
486 | 0x00ffffff, /* dst_mask */ | |
487 | TRUE), /* pcrel_offset */ | |
488 | ||
489 | HOWTO (R_ARM_JUMP24, /* type */ | |
490 | 2, /* rightshift */ | |
491 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
492 | 24, /* bitsize */ | |
493 | TRUE, /* pc_relative */ | |
494 | 0, /* bitpos */ | |
495 | complain_overflow_signed,/* complain_on_overflow */ | |
496 | bfd_elf_generic_reloc, /* special_function */ | |
497 | "R_ARM_JUMP24", /* name */ | |
498 | FALSE, /* partial_inplace */ | |
499 | 0x00ffffff, /* src_mask */ | |
500 | 0x00ffffff, /* dst_mask */ | |
501 | TRUE), /* pcrel_offset */ | |
502 | ||
c19d1205 ZW |
503 | HOWTO (R_ARM_THM_JUMP24, /* type */ |
504 | 1, /* rightshift */ | |
505 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
506 | 24, /* bitsize */ | |
507 | TRUE, /* pc_relative */ | |
7f266840 | 508 | 0, /* bitpos */ |
c19d1205 | 509 | complain_overflow_signed,/* complain_on_overflow */ |
7f266840 | 510 | bfd_elf_generic_reloc, /* special_function */ |
c19d1205 | 511 | "R_ARM_THM_JUMP24", /* name */ |
7f266840 | 512 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
513 | 0x07ff2fff, /* src_mask */ |
514 | 0x07ff2fff, /* dst_mask */ | |
515 | TRUE), /* pcrel_offset */ | |
7f266840 | 516 | |
c19d1205 | 517 | HOWTO (R_ARM_BASE_ABS, /* type */ |
7f266840 | 518 | 0, /* rightshift */ |
c19d1205 ZW |
519 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
520 | 32, /* bitsize */ | |
7f266840 DJ |
521 | FALSE, /* pc_relative */ |
522 | 0, /* bitpos */ | |
523 | complain_overflow_dont,/* complain_on_overflow */ | |
524 | bfd_elf_generic_reloc, /* special_function */ | |
c19d1205 | 525 | "R_ARM_BASE_ABS", /* name */ |
7f266840 | 526 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
527 | 0xffffffff, /* src_mask */ |
528 | 0xffffffff, /* dst_mask */ | |
7f266840 DJ |
529 | FALSE), /* pcrel_offset */ |
530 | ||
531 | HOWTO (R_ARM_ALU_PCREL7_0, /* type */ | |
532 | 0, /* rightshift */ | |
533 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
534 | 12, /* bitsize */ | |
535 | TRUE, /* pc_relative */ | |
536 | 0, /* bitpos */ | |
537 | complain_overflow_dont,/* complain_on_overflow */ | |
538 | bfd_elf_generic_reloc, /* special_function */ | |
539 | "R_ARM_ALU_PCREL_7_0", /* name */ | |
540 | FALSE, /* partial_inplace */ | |
541 | 0x00000fff, /* src_mask */ | |
542 | 0x00000fff, /* dst_mask */ | |
543 | TRUE), /* pcrel_offset */ | |
544 | ||
545 | HOWTO (R_ARM_ALU_PCREL15_8, /* type */ | |
546 | 0, /* rightshift */ | |
547 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
548 | 12, /* bitsize */ | |
549 | TRUE, /* pc_relative */ | |
550 | 8, /* bitpos */ | |
551 | complain_overflow_dont,/* complain_on_overflow */ | |
552 | bfd_elf_generic_reloc, /* special_function */ | |
553 | "R_ARM_ALU_PCREL_15_8",/* name */ | |
554 | FALSE, /* partial_inplace */ | |
555 | 0x00000fff, /* src_mask */ | |
556 | 0x00000fff, /* dst_mask */ | |
557 | TRUE), /* pcrel_offset */ | |
558 | ||
559 | HOWTO (R_ARM_ALU_PCREL23_15, /* type */ | |
560 | 0, /* rightshift */ | |
561 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
562 | 12, /* bitsize */ | |
563 | TRUE, /* pc_relative */ | |
564 | 16, /* bitpos */ | |
565 | complain_overflow_dont,/* complain_on_overflow */ | |
566 | bfd_elf_generic_reloc, /* special_function */ | |
567 | "R_ARM_ALU_PCREL_23_15",/* name */ | |
568 | FALSE, /* partial_inplace */ | |
569 | 0x00000fff, /* src_mask */ | |
570 | 0x00000fff, /* dst_mask */ | |
571 | TRUE), /* pcrel_offset */ | |
572 | ||
573 | HOWTO (R_ARM_LDR_SBREL_11_0, /* type */ | |
574 | 0, /* rightshift */ | |
575 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
576 | 12, /* bitsize */ | |
577 | FALSE, /* pc_relative */ | |
578 | 0, /* bitpos */ | |
579 | complain_overflow_dont,/* complain_on_overflow */ | |
580 | bfd_elf_generic_reloc, /* special_function */ | |
581 | "R_ARM_LDR_SBREL_11_0",/* name */ | |
582 | FALSE, /* partial_inplace */ | |
583 | 0x00000fff, /* src_mask */ | |
584 | 0x00000fff, /* dst_mask */ | |
585 | FALSE), /* pcrel_offset */ | |
586 | ||
587 | HOWTO (R_ARM_ALU_SBREL_19_12, /* type */ | |
588 | 0, /* rightshift */ | |
589 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
590 | 8, /* bitsize */ | |
591 | FALSE, /* pc_relative */ | |
592 | 12, /* bitpos */ | |
593 | complain_overflow_dont,/* complain_on_overflow */ | |
594 | bfd_elf_generic_reloc, /* special_function */ | |
595 | "R_ARM_ALU_SBREL_19_12",/* name */ | |
596 | FALSE, /* partial_inplace */ | |
597 | 0x000ff000, /* src_mask */ | |
598 | 0x000ff000, /* dst_mask */ | |
599 | FALSE), /* pcrel_offset */ | |
600 | ||
601 | HOWTO (R_ARM_ALU_SBREL_27_20, /* type */ | |
602 | 0, /* rightshift */ | |
603 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
604 | 8, /* bitsize */ | |
605 | FALSE, /* pc_relative */ | |
606 | 20, /* bitpos */ | |
607 | complain_overflow_dont,/* complain_on_overflow */ | |
608 | bfd_elf_generic_reloc, /* special_function */ | |
609 | "R_ARM_ALU_SBREL_27_20",/* name */ | |
610 | FALSE, /* partial_inplace */ | |
611 | 0x0ff00000, /* src_mask */ | |
612 | 0x0ff00000, /* dst_mask */ | |
613 | FALSE), /* pcrel_offset */ | |
614 | ||
615 | HOWTO (R_ARM_TARGET1, /* type */ | |
616 | 0, /* rightshift */ | |
617 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
618 | 32, /* bitsize */ | |
619 | FALSE, /* pc_relative */ | |
620 | 0, /* bitpos */ | |
621 | complain_overflow_dont,/* complain_on_overflow */ | |
622 | bfd_elf_generic_reloc, /* special_function */ | |
623 | "R_ARM_TARGET1", /* name */ | |
624 | FALSE, /* partial_inplace */ | |
625 | 0xffffffff, /* src_mask */ | |
626 | 0xffffffff, /* dst_mask */ | |
627 | FALSE), /* pcrel_offset */ | |
628 | ||
629 | HOWTO (R_ARM_ROSEGREL32, /* type */ | |
630 | 0, /* rightshift */ | |
631 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
632 | 32, /* bitsize */ | |
633 | FALSE, /* pc_relative */ | |
634 | 0, /* bitpos */ | |
635 | complain_overflow_dont,/* complain_on_overflow */ | |
636 | bfd_elf_generic_reloc, /* special_function */ | |
637 | "R_ARM_ROSEGREL32", /* name */ | |
638 | FALSE, /* partial_inplace */ | |
639 | 0xffffffff, /* src_mask */ | |
640 | 0xffffffff, /* dst_mask */ | |
641 | FALSE), /* pcrel_offset */ | |
642 | ||
643 | HOWTO (R_ARM_V4BX, /* type */ | |
644 | 0, /* rightshift */ | |
645 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
646 | 32, /* bitsize */ | |
647 | FALSE, /* pc_relative */ | |
648 | 0, /* bitpos */ | |
649 | complain_overflow_dont,/* complain_on_overflow */ | |
650 | bfd_elf_generic_reloc, /* special_function */ | |
651 | "R_ARM_V4BX", /* name */ | |
652 | FALSE, /* partial_inplace */ | |
653 | 0xffffffff, /* src_mask */ | |
654 | 0xffffffff, /* dst_mask */ | |
655 | FALSE), /* pcrel_offset */ | |
656 | ||
657 | HOWTO (R_ARM_TARGET2, /* type */ | |
658 | 0, /* rightshift */ | |
659 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
660 | 32, /* bitsize */ | |
661 | FALSE, /* pc_relative */ | |
662 | 0, /* bitpos */ | |
663 | complain_overflow_signed,/* complain_on_overflow */ | |
664 | bfd_elf_generic_reloc, /* special_function */ | |
665 | "R_ARM_TARGET2", /* name */ | |
666 | FALSE, /* partial_inplace */ | |
667 | 0xffffffff, /* src_mask */ | |
668 | 0xffffffff, /* dst_mask */ | |
669 | TRUE), /* pcrel_offset */ | |
670 | ||
671 | HOWTO (R_ARM_PREL31, /* type */ | |
672 | 0, /* rightshift */ | |
673 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
674 | 31, /* bitsize */ | |
675 | TRUE, /* pc_relative */ | |
676 | 0, /* bitpos */ | |
677 | complain_overflow_signed,/* complain_on_overflow */ | |
678 | bfd_elf_generic_reloc, /* special_function */ | |
679 | "R_ARM_PREL31", /* name */ | |
680 | FALSE, /* partial_inplace */ | |
681 | 0x7fffffff, /* src_mask */ | |
682 | 0x7fffffff, /* dst_mask */ | |
683 | TRUE), /* pcrel_offset */ | |
c19d1205 ZW |
684 | |
685 | HOWTO (R_ARM_MOVW_ABS_NC, /* type */ | |
686 | 0, /* rightshift */ | |
687 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
688 | 16, /* bitsize */ | |
689 | FALSE, /* pc_relative */ | |
690 | 0, /* bitpos */ | |
691 | complain_overflow_dont,/* complain_on_overflow */ | |
692 | bfd_elf_generic_reloc, /* special_function */ | |
693 | "R_ARM_MOVW_ABS_NC", /* name */ | |
694 | FALSE, /* partial_inplace */ | |
39623e12 PB |
695 | 0x000f0fff, /* src_mask */ |
696 | 0x000f0fff, /* dst_mask */ | |
c19d1205 ZW |
697 | FALSE), /* pcrel_offset */ |
698 | ||
699 | HOWTO (R_ARM_MOVT_ABS, /* type */ | |
700 | 0, /* rightshift */ | |
701 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
702 | 16, /* bitsize */ | |
703 | FALSE, /* pc_relative */ | |
704 | 0, /* bitpos */ | |
705 | complain_overflow_bitfield,/* complain_on_overflow */ | |
706 | bfd_elf_generic_reloc, /* special_function */ | |
707 | "R_ARM_MOVT_ABS", /* name */ | |
708 | FALSE, /* partial_inplace */ | |
39623e12 PB |
709 | 0x000f0fff, /* src_mask */ |
710 | 0x000f0fff, /* dst_mask */ | |
c19d1205 ZW |
711 | FALSE), /* pcrel_offset */ |
712 | ||
713 | HOWTO (R_ARM_MOVW_PREL_NC, /* type */ | |
714 | 0, /* rightshift */ | |
715 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
716 | 16, /* bitsize */ | |
717 | TRUE, /* pc_relative */ | |
718 | 0, /* bitpos */ | |
719 | complain_overflow_dont,/* complain_on_overflow */ | |
720 | bfd_elf_generic_reloc, /* special_function */ | |
721 | "R_ARM_MOVW_PREL_NC", /* name */ | |
722 | FALSE, /* partial_inplace */ | |
39623e12 PB |
723 | 0x000f0fff, /* src_mask */ |
724 | 0x000f0fff, /* dst_mask */ | |
c19d1205 ZW |
725 | TRUE), /* pcrel_offset */ |
726 | ||
727 | HOWTO (R_ARM_MOVT_PREL, /* type */ | |
728 | 0, /* rightshift */ | |
729 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
730 | 16, /* bitsize */ | |
731 | TRUE, /* pc_relative */ | |
732 | 0, /* bitpos */ | |
733 | complain_overflow_bitfield,/* complain_on_overflow */ | |
734 | bfd_elf_generic_reloc, /* special_function */ | |
735 | "R_ARM_MOVT_PREL", /* name */ | |
736 | FALSE, /* partial_inplace */ | |
39623e12 PB |
737 | 0x000f0fff, /* src_mask */ |
738 | 0x000f0fff, /* dst_mask */ | |
c19d1205 ZW |
739 | TRUE), /* pcrel_offset */ |
740 | ||
741 | HOWTO (R_ARM_THM_MOVW_ABS_NC, /* type */ | |
742 | 0, /* rightshift */ | |
743 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
744 | 16, /* bitsize */ | |
745 | FALSE, /* pc_relative */ | |
746 | 0, /* bitpos */ | |
747 | complain_overflow_dont,/* complain_on_overflow */ | |
748 | bfd_elf_generic_reloc, /* special_function */ | |
749 | "R_ARM_THM_MOVW_ABS_NC",/* name */ | |
750 | FALSE, /* partial_inplace */ | |
751 | 0x040f70ff, /* src_mask */ | |
752 | 0x040f70ff, /* dst_mask */ | |
753 | FALSE), /* pcrel_offset */ | |
754 | ||
755 | HOWTO (R_ARM_THM_MOVT_ABS, /* type */ | |
756 | 0, /* rightshift */ | |
757 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
758 | 16, /* bitsize */ | |
759 | FALSE, /* pc_relative */ | |
760 | 0, /* bitpos */ | |
761 | complain_overflow_bitfield,/* complain_on_overflow */ | |
762 | bfd_elf_generic_reloc, /* special_function */ | |
763 | "R_ARM_THM_MOVT_ABS", /* name */ | |
764 | FALSE, /* partial_inplace */ | |
765 | 0x040f70ff, /* src_mask */ | |
766 | 0x040f70ff, /* dst_mask */ | |
767 | FALSE), /* pcrel_offset */ | |
768 | ||
769 | HOWTO (R_ARM_THM_MOVW_PREL_NC,/* type */ | |
770 | 0, /* rightshift */ | |
771 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
772 | 16, /* bitsize */ | |
773 | TRUE, /* pc_relative */ | |
774 | 0, /* bitpos */ | |
775 | complain_overflow_dont,/* complain_on_overflow */ | |
776 | bfd_elf_generic_reloc, /* special_function */ | |
777 | "R_ARM_THM_MOVW_PREL_NC",/* name */ | |
778 | FALSE, /* partial_inplace */ | |
779 | 0x040f70ff, /* src_mask */ | |
780 | 0x040f70ff, /* dst_mask */ | |
781 | TRUE), /* pcrel_offset */ | |
782 | ||
783 | HOWTO (R_ARM_THM_MOVT_PREL, /* type */ | |
784 | 0, /* rightshift */ | |
785 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
786 | 16, /* bitsize */ | |
787 | TRUE, /* pc_relative */ | |
788 | 0, /* bitpos */ | |
789 | complain_overflow_bitfield,/* complain_on_overflow */ | |
790 | bfd_elf_generic_reloc, /* special_function */ | |
791 | "R_ARM_THM_MOVT_PREL", /* name */ | |
792 | FALSE, /* partial_inplace */ | |
793 | 0x040f70ff, /* src_mask */ | |
794 | 0x040f70ff, /* dst_mask */ | |
795 | TRUE), /* pcrel_offset */ | |
796 | ||
797 | HOWTO (R_ARM_THM_JUMP19, /* type */ | |
798 | 1, /* rightshift */ | |
799 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
800 | 19, /* bitsize */ | |
801 | TRUE, /* pc_relative */ | |
802 | 0, /* bitpos */ | |
803 | complain_overflow_signed,/* complain_on_overflow */ | |
804 | bfd_elf_generic_reloc, /* special_function */ | |
805 | "R_ARM_THM_JUMP19", /* name */ | |
806 | FALSE, /* partial_inplace */ | |
807 | 0x043f2fff, /* src_mask */ | |
808 | 0x043f2fff, /* dst_mask */ | |
809 | TRUE), /* pcrel_offset */ | |
810 | ||
811 | HOWTO (R_ARM_THM_JUMP6, /* type */ | |
812 | 1, /* rightshift */ | |
813 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
814 | 6, /* bitsize */ | |
815 | TRUE, /* pc_relative */ | |
816 | 0, /* bitpos */ | |
817 | complain_overflow_unsigned,/* complain_on_overflow */ | |
818 | bfd_elf_generic_reloc, /* special_function */ | |
819 | "R_ARM_THM_JUMP6", /* name */ | |
820 | FALSE, /* partial_inplace */ | |
821 | 0x02f8, /* src_mask */ | |
822 | 0x02f8, /* dst_mask */ | |
823 | TRUE), /* pcrel_offset */ | |
824 | ||
825 | /* These are declared as 13-bit signed relocations because we can | |
826 | address -4095 .. 4095(base) by altering ADDW to SUBW or vice | |
827 | versa. */ | |
828 | HOWTO (R_ARM_THM_ALU_PREL_11_0,/* type */ | |
829 | 0, /* rightshift */ | |
830 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
831 | 13, /* bitsize */ | |
832 | TRUE, /* pc_relative */ | |
833 | 0, /* bitpos */ | |
2cab6cc3 | 834 | complain_overflow_dont,/* complain_on_overflow */ |
c19d1205 ZW |
835 | bfd_elf_generic_reloc, /* special_function */ |
836 | "R_ARM_THM_ALU_PREL_11_0",/* name */ | |
837 | FALSE, /* partial_inplace */ | |
2cab6cc3 MS |
838 | 0xffffffff, /* src_mask */ |
839 | 0xffffffff, /* dst_mask */ | |
c19d1205 ZW |
840 | TRUE), /* pcrel_offset */ |
841 | ||
842 | HOWTO (R_ARM_THM_PC12, /* type */ | |
843 | 0, /* rightshift */ | |
844 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
845 | 13, /* bitsize */ | |
846 | TRUE, /* pc_relative */ | |
847 | 0, /* bitpos */ | |
2cab6cc3 | 848 | complain_overflow_dont,/* complain_on_overflow */ |
c19d1205 ZW |
849 | bfd_elf_generic_reloc, /* special_function */ |
850 | "R_ARM_THM_PC12", /* name */ | |
851 | FALSE, /* partial_inplace */ | |
2cab6cc3 MS |
852 | 0xffffffff, /* src_mask */ |
853 | 0xffffffff, /* dst_mask */ | |
c19d1205 ZW |
854 | TRUE), /* pcrel_offset */ |
855 | ||
856 | HOWTO (R_ARM_ABS32_NOI, /* type */ | |
857 | 0, /* rightshift */ | |
858 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
859 | 32, /* bitsize */ | |
860 | FALSE, /* pc_relative */ | |
861 | 0, /* bitpos */ | |
862 | complain_overflow_dont,/* complain_on_overflow */ | |
863 | bfd_elf_generic_reloc, /* special_function */ | |
864 | "R_ARM_ABS32_NOI", /* name */ | |
865 | FALSE, /* partial_inplace */ | |
866 | 0xffffffff, /* src_mask */ | |
867 | 0xffffffff, /* dst_mask */ | |
868 | FALSE), /* pcrel_offset */ | |
869 | ||
870 | HOWTO (R_ARM_REL32_NOI, /* type */ | |
871 | 0, /* rightshift */ | |
872 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
873 | 32, /* bitsize */ | |
874 | TRUE, /* pc_relative */ | |
875 | 0, /* bitpos */ | |
876 | complain_overflow_dont,/* complain_on_overflow */ | |
877 | bfd_elf_generic_reloc, /* special_function */ | |
878 | "R_ARM_REL32_NOI", /* name */ | |
879 | FALSE, /* partial_inplace */ | |
880 | 0xffffffff, /* src_mask */ | |
881 | 0xffffffff, /* dst_mask */ | |
882 | FALSE), /* pcrel_offset */ | |
7f266840 | 883 | |
4962c51a MS |
884 | /* Group relocations. */ |
885 | ||
886 | HOWTO (R_ARM_ALU_PC_G0_NC, /* type */ | |
887 | 0, /* rightshift */ | |
888 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
889 | 32, /* bitsize */ | |
890 | TRUE, /* pc_relative */ | |
891 | 0, /* bitpos */ | |
892 | complain_overflow_dont,/* complain_on_overflow */ | |
893 | bfd_elf_generic_reloc, /* special_function */ | |
894 | "R_ARM_ALU_PC_G0_NC", /* name */ | |
895 | FALSE, /* partial_inplace */ | |
896 | 0xffffffff, /* src_mask */ | |
897 | 0xffffffff, /* dst_mask */ | |
898 | TRUE), /* pcrel_offset */ | |
899 | ||
900 | HOWTO (R_ARM_ALU_PC_G0, /* type */ | |
901 | 0, /* rightshift */ | |
902 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
903 | 32, /* bitsize */ | |
904 | TRUE, /* pc_relative */ | |
905 | 0, /* bitpos */ | |
906 | complain_overflow_dont,/* complain_on_overflow */ | |
907 | bfd_elf_generic_reloc, /* special_function */ | |
908 | "R_ARM_ALU_PC_G0", /* name */ | |
909 | FALSE, /* partial_inplace */ | |
910 | 0xffffffff, /* src_mask */ | |
911 | 0xffffffff, /* dst_mask */ | |
912 | TRUE), /* pcrel_offset */ | |
913 | ||
914 | HOWTO (R_ARM_ALU_PC_G1_NC, /* type */ | |
915 | 0, /* rightshift */ | |
916 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
917 | 32, /* bitsize */ | |
918 | TRUE, /* pc_relative */ | |
919 | 0, /* bitpos */ | |
920 | complain_overflow_dont,/* complain_on_overflow */ | |
921 | bfd_elf_generic_reloc, /* special_function */ | |
922 | "R_ARM_ALU_PC_G1_NC", /* name */ | |
923 | FALSE, /* partial_inplace */ | |
924 | 0xffffffff, /* src_mask */ | |
925 | 0xffffffff, /* dst_mask */ | |
926 | TRUE), /* pcrel_offset */ | |
927 | ||
928 | HOWTO (R_ARM_ALU_PC_G1, /* type */ | |
929 | 0, /* rightshift */ | |
930 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
931 | 32, /* bitsize */ | |
932 | TRUE, /* pc_relative */ | |
933 | 0, /* bitpos */ | |
934 | complain_overflow_dont,/* complain_on_overflow */ | |
935 | bfd_elf_generic_reloc, /* special_function */ | |
936 | "R_ARM_ALU_PC_G1", /* name */ | |
937 | FALSE, /* partial_inplace */ | |
938 | 0xffffffff, /* src_mask */ | |
939 | 0xffffffff, /* dst_mask */ | |
940 | TRUE), /* pcrel_offset */ | |
941 | ||
942 | HOWTO (R_ARM_ALU_PC_G2, /* type */ | |
943 | 0, /* rightshift */ | |
944 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
945 | 32, /* bitsize */ | |
946 | TRUE, /* pc_relative */ | |
947 | 0, /* bitpos */ | |
948 | complain_overflow_dont,/* complain_on_overflow */ | |
949 | bfd_elf_generic_reloc, /* special_function */ | |
950 | "R_ARM_ALU_PC_G2", /* name */ | |
951 | FALSE, /* partial_inplace */ | |
952 | 0xffffffff, /* src_mask */ | |
953 | 0xffffffff, /* dst_mask */ | |
954 | TRUE), /* pcrel_offset */ | |
955 | ||
956 | HOWTO (R_ARM_LDR_PC_G1, /* type */ | |
957 | 0, /* rightshift */ | |
958 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
959 | 32, /* bitsize */ | |
960 | TRUE, /* pc_relative */ | |
961 | 0, /* bitpos */ | |
962 | complain_overflow_dont,/* complain_on_overflow */ | |
963 | bfd_elf_generic_reloc, /* special_function */ | |
964 | "R_ARM_LDR_PC_G1", /* name */ | |
965 | FALSE, /* partial_inplace */ | |
966 | 0xffffffff, /* src_mask */ | |
967 | 0xffffffff, /* dst_mask */ | |
968 | TRUE), /* pcrel_offset */ | |
969 | ||
970 | HOWTO (R_ARM_LDR_PC_G2, /* type */ | |
971 | 0, /* rightshift */ | |
972 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
973 | 32, /* bitsize */ | |
974 | TRUE, /* pc_relative */ | |
975 | 0, /* bitpos */ | |
976 | complain_overflow_dont,/* complain_on_overflow */ | |
977 | bfd_elf_generic_reloc, /* special_function */ | |
978 | "R_ARM_LDR_PC_G2", /* name */ | |
979 | FALSE, /* partial_inplace */ | |
980 | 0xffffffff, /* src_mask */ | |
981 | 0xffffffff, /* dst_mask */ | |
982 | TRUE), /* pcrel_offset */ | |
983 | ||
984 | HOWTO (R_ARM_LDRS_PC_G0, /* type */ | |
985 | 0, /* rightshift */ | |
986 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
987 | 32, /* bitsize */ | |
988 | TRUE, /* pc_relative */ | |
989 | 0, /* bitpos */ | |
990 | complain_overflow_dont,/* complain_on_overflow */ | |
991 | bfd_elf_generic_reloc, /* special_function */ | |
992 | "R_ARM_LDRS_PC_G0", /* name */ | |
993 | FALSE, /* partial_inplace */ | |
994 | 0xffffffff, /* src_mask */ | |
995 | 0xffffffff, /* dst_mask */ | |
996 | TRUE), /* pcrel_offset */ | |
997 | ||
998 | HOWTO (R_ARM_LDRS_PC_G1, /* type */ | |
999 | 0, /* rightshift */ | |
1000 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1001 | 32, /* bitsize */ | |
1002 | TRUE, /* pc_relative */ | |
1003 | 0, /* bitpos */ | |
1004 | complain_overflow_dont,/* complain_on_overflow */ | |
1005 | bfd_elf_generic_reloc, /* special_function */ | |
1006 | "R_ARM_LDRS_PC_G1", /* name */ | |
1007 | FALSE, /* partial_inplace */ | |
1008 | 0xffffffff, /* src_mask */ | |
1009 | 0xffffffff, /* dst_mask */ | |
1010 | TRUE), /* pcrel_offset */ | |
1011 | ||
1012 | HOWTO (R_ARM_LDRS_PC_G2, /* type */ | |
1013 | 0, /* rightshift */ | |
1014 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1015 | 32, /* bitsize */ | |
1016 | TRUE, /* pc_relative */ | |
1017 | 0, /* bitpos */ | |
1018 | complain_overflow_dont,/* complain_on_overflow */ | |
1019 | bfd_elf_generic_reloc, /* special_function */ | |
1020 | "R_ARM_LDRS_PC_G2", /* name */ | |
1021 | FALSE, /* partial_inplace */ | |
1022 | 0xffffffff, /* src_mask */ | |
1023 | 0xffffffff, /* dst_mask */ | |
1024 | TRUE), /* pcrel_offset */ | |
1025 | ||
1026 | HOWTO (R_ARM_LDC_PC_G0, /* type */ | |
1027 | 0, /* rightshift */ | |
1028 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1029 | 32, /* bitsize */ | |
1030 | TRUE, /* pc_relative */ | |
1031 | 0, /* bitpos */ | |
1032 | complain_overflow_dont,/* complain_on_overflow */ | |
1033 | bfd_elf_generic_reloc, /* special_function */ | |
1034 | "R_ARM_LDC_PC_G0", /* name */ | |
1035 | FALSE, /* partial_inplace */ | |
1036 | 0xffffffff, /* src_mask */ | |
1037 | 0xffffffff, /* dst_mask */ | |
1038 | TRUE), /* pcrel_offset */ | |
1039 | ||
1040 | HOWTO (R_ARM_LDC_PC_G1, /* type */ | |
1041 | 0, /* rightshift */ | |
1042 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1043 | 32, /* bitsize */ | |
1044 | TRUE, /* pc_relative */ | |
1045 | 0, /* bitpos */ | |
1046 | complain_overflow_dont,/* complain_on_overflow */ | |
1047 | bfd_elf_generic_reloc, /* special_function */ | |
1048 | "R_ARM_LDC_PC_G1", /* name */ | |
1049 | FALSE, /* partial_inplace */ | |
1050 | 0xffffffff, /* src_mask */ | |
1051 | 0xffffffff, /* dst_mask */ | |
1052 | TRUE), /* pcrel_offset */ | |
1053 | ||
1054 | HOWTO (R_ARM_LDC_PC_G2, /* type */ | |
1055 | 0, /* rightshift */ | |
1056 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1057 | 32, /* bitsize */ | |
1058 | TRUE, /* pc_relative */ | |
1059 | 0, /* bitpos */ | |
1060 | complain_overflow_dont,/* complain_on_overflow */ | |
1061 | bfd_elf_generic_reloc, /* special_function */ | |
1062 | "R_ARM_LDC_PC_G2", /* name */ | |
1063 | FALSE, /* partial_inplace */ | |
1064 | 0xffffffff, /* src_mask */ | |
1065 | 0xffffffff, /* dst_mask */ | |
1066 | TRUE), /* pcrel_offset */ | |
1067 | ||
1068 | HOWTO (R_ARM_ALU_SB_G0_NC, /* type */ | |
1069 | 0, /* rightshift */ | |
1070 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1071 | 32, /* bitsize */ | |
1072 | TRUE, /* pc_relative */ | |
1073 | 0, /* bitpos */ | |
1074 | complain_overflow_dont,/* complain_on_overflow */ | |
1075 | bfd_elf_generic_reloc, /* special_function */ | |
1076 | "R_ARM_ALU_SB_G0_NC", /* name */ | |
1077 | FALSE, /* partial_inplace */ | |
1078 | 0xffffffff, /* src_mask */ | |
1079 | 0xffffffff, /* dst_mask */ | |
1080 | TRUE), /* pcrel_offset */ | |
1081 | ||
1082 | HOWTO (R_ARM_ALU_SB_G0, /* type */ | |
1083 | 0, /* rightshift */ | |
1084 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1085 | 32, /* bitsize */ | |
1086 | TRUE, /* pc_relative */ | |
1087 | 0, /* bitpos */ | |
1088 | complain_overflow_dont,/* complain_on_overflow */ | |
1089 | bfd_elf_generic_reloc, /* special_function */ | |
1090 | "R_ARM_ALU_SB_G0", /* name */ | |
1091 | FALSE, /* partial_inplace */ | |
1092 | 0xffffffff, /* src_mask */ | |
1093 | 0xffffffff, /* dst_mask */ | |
1094 | TRUE), /* pcrel_offset */ | |
1095 | ||
1096 | HOWTO (R_ARM_ALU_SB_G1_NC, /* type */ | |
1097 | 0, /* rightshift */ | |
1098 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1099 | 32, /* bitsize */ | |
1100 | TRUE, /* pc_relative */ | |
1101 | 0, /* bitpos */ | |
1102 | complain_overflow_dont,/* complain_on_overflow */ | |
1103 | bfd_elf_generic_reloc, /* special_function */ | |
1104 | "R_ARM_ALU_SB_G1_NC", /* name */ | |
1105 | FALSE, /* partial_inplace */ | |
1106 | 0xffffffff, /* src_mask */ | |
1107 | 0xffffffff, /* dst_mask */ | |
1108 | TRUE), /* pcrel_offset */ | |
1109 | ||
1110 | HOWTO (R_ARM_ALU_SB_G1, /* type */ | |
1111 | 0, /* rightshift */ | |
1112 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1113 | 32, /* bitsize */ | |
1114 | TRUE, /* pc_relative */ | |
1115 | 0, /* bitpos */ | |
1116 | complain_overflow_dont,/* complain_on_overflow */ | |
1117 | bfd_elf_generic_reloc, /* special_function */ | |
1118 | "R_ARM_ALU_SB_G1", /* name */ | |
1119 | FALSE, /* partial_inplace */ | |
1120 | 0xffffffff, /* src_mask */ | |
1121 | 0xffffffff, /* dst_mask */ | |
1122 | TRUE), /* pcrel_offset */ | |
1123 | ||
1124 | HOWTO (R_ARM_ALU_SB_G2, /* type */ | |
1125 | 0, /* rightshift */ | |
1126 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1127 | 32, /* bitsize */ | |
1128 | TRUE, /* pc_relative */ | |
1129 | 0, /* bitpos */ | |
1130 | complain_overflow_dont,/* complain_on_overflow */ | |
1131 | bfd_elf_generic_reloc, /* special_function */ | |
1132 | "R_ARM_ALU_SB_G2", /* name */ | |
1133 | FALSE, /* partial_inplace */ | |
1134 | 0xffffffff, /* src_mask */ | |
1135 | 0xffffffff, /* dst_mask */ | |
1136 | TRUE), /* pcrel_offset */ | |
1137 | ||
1138 | HOWTO (R_ARM_LDR_SB_G0, /* type */ | |
1139 | 0, /* rightshift */ | |
1140 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1141 | 32, /* bitsize */ | |
1142 | TRUE, /* pc_relative */ | |
1143 | 0, /* bitpos */ | |
1144 | complain_overflow_dont,/* complain_on_overflow */ | |
1145 | bfd_elf_generic_reloc, /* special_function */ | |
1146 | "R_ARM_LDR_SB_G0", /* name */ | |
1147 | FALSE, /* partial_inplace */ | |
1148 | 0xffffffff, /* src_mask */ | |
1149 | 0xffffffff, /* dst_mask */ | |
1150 | TRUE), /* pcrel_offset */ | |
1151 | ||
1152 | HOWTO (R_ARM_LDR_SB_G1, /* type */ | |
1153 | 0, /* rightshift */ | |
1154 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1155 | 32, /* bitsize */ | |
1156 | TRUE, /* pc_relative */ | |
1157 | 0, /* bitpos */ | |
1158 | complain_overflow_dont,/* complain_on_overflow */ | |
1159 | bfd_elf_generic_reloc, /* special_function */ | |
1160 | "R_ARM_LDR_SB_G1", /* name */ | |
1161 | FALSE, /* partial_inplace */ | |
1162 | 0xffffffff, /* src_mask */ | |
1163 | 0xffffffff, /* dst_mask */ | |
1164 | TRUE), /* pcrel_offset */ | |
1165 | ||
1166 | HOWTO (R_ARM_LDR_SB_G2, /* type */ | |
1167 | 0, /* rightshift */ | |
1168 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1169 | 32, /* bitsize */ | |
1170 | TRUE, /* pc_relative */ | |
1171 | 0, /* bitpos */ | |
1172 | complain_overflow_dont,/* complain_on_overflow */ | |
1173 | bfd_elf_generic_reloc, /* special_function */ | |
1174 | "R_ARM_LDR_SB_G2", /* name */ | |
1175 | FALSE, /* partial_inplace */ | |
1176 | 0xffffffff, /* src_mask */ | |
1177 | 0xffffffff, /* dst_mask */ | |
1178 | TRUE), /* pcrel_offset */ | |
1179 | ||
1180 | HOWTO (R_ARM_LDRS_SB_G0, /* type */ | |
1181 | 0, /* rightshift */ | |
1182 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1183 | 32, /* bitsize */ | |
1184 | TRUE, /* pc_relative */ | |
1185 | 0, /* bitpos */ | |
1186 | complain_overflow_dont,/* complain_on_overflow */ | |
1187 | bfd_elf_generic_reloc, /* special_function */ | |
1188 | "R_ARM_LDRS_SB_G0", /* name */ | |
1189 | FALSE, /* partial_inplace */ | |
1190 | 0xffffffff, /* src_mask */ | |
1191 | 0xffffffff, /* dst_mask */ | |
1192 | TRUE), /* pcrel_offset */ | |
1193 | ||
1194 | HOWTO (R_ARM_LDRS_SB_G1, /* type */ | |
1195 | 0, /* rightshift */ | |
1196 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1197 | 32, /* bitsize */ | |
1198 | TRUE, /* pc_relative */ | |
1199 | 0, /* bitpos */ | |
1200 | complain_overflow_dont,/* complain_on_overflow */ | |
1201 | bfd_elf_generic_reloc, /* special_function */ | |
1202 | "R_ARM_LDRS_SB_G1", /* name */ | |
1203 | FALSE, /* partial_inplace */ | |
1204 | 0xffffffff, /* src_mask */ | |
1205 | 0xffffffff, /* dst_mask */ | |
1206 | TRUE), /* pcrel_offset */ | |
1207 | ||
1208 | HOWTO (R_ARM_LDRS_SB_G2, /* type */ | |
1209 | 0, /* rightshift */ | |
1210 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1211 | 32, /* bitsize */ | |
1212 | TRUE, /* pc_relative */ | |
1213 | 0, /* bitpos */ | |
1214 | complain_overflow_dont,/* complain_on_overflow */ | |
1215 | bfd_elf_generic_reloc, /* special_function */ | |
1216 | "R_ARM_LDRS_SB_G2", /* name */ | |
1217 | FALSE, /* partial_inplace */ | |
1218 | 0xffffffff, /* src_mask */ | |
1219 | 0xffffffff, /* dst_mask */ | |
1220 | TRUE), /* pcrel_offset */ | |
1221 | ||
1222 | HOWTO (R_ARM_LDC_SB_G0, /* type */ | |
1223 | 0, /* rightshift */ | |
1224 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1225 | 32, /* bitsize */ | |
1226 | TRUE, /* pc_relative */ | |
1227 | 0, /* bitpos */ | |
1228 | complain_overflow_dont,/* complain_on_overflow */ | |
1229 | bfd_elf_generic_reloc, /* special_function */ | |
1230 | "R_ARM_LDC_SB_G0", /* name */ | |
1231 | FALSE, /* partial_inplace */ | |
1232 | 0xffffffff, /* src_mask */ | |
1233 | 0xffffffff, /* dst_mask */ | |
1234 | TRUE), /* pcrel_offset */ | |
1235 | ||
1236 | HOWTO (R_ARM_LDC_SB_G1, /* type */ | |
1237 | 0, /* rightshift */ | |
1238 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1239 | 32, /* bitsize */ | |
1240 | TRUE, /* pc_relative */ | |
1241 | 0, /* bitpos */ | |
1242 | complain_overflow_dont,/* complain_on_overflow */ | |
1243 | bfd_elf_generic_reloc, /* special_function */ | |
1244 | "R_ARM_LDC_SB_G1", /* name */ | |
1245 | FALSE, /* partial_inplace */ | |
1246 | 0xffffffff, /* src_mask */ | |
1247 | 0xffffffff, /* dst_mask */ | |
1248 | TRUE), /* pcrel_offset */ | |
1249 | ||
1250 | HOWTO (R_ARM_LDC_SB_G2, /* type */ | |
1251 | 0, /* rightshift */ | |
1252 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1253 | 32, /* bitsize */ | |
1254 | TRUE, /* pc_relative */ | |
1255 | 0, /* bitpos */ | |
1256 | complain_overflow_dont,/* complain_on_overflow */ | |
1257 | bfd_elf_generic_reloc, /* special_function */ | |
1258 | "R_ARM_LDC_SB_G2", /* name */ | |
1259 | FALSE, /* partial_inplace */ | |
1260 | 0xffffffff, /* src_mask */ | |
1261 | 0xffffffff, /* dst_mask */ | |
1262 | TRUE), /* pcrel_offset */ | |
1263 | ||
1264 | /* End of group relocations. */ | |
c19d1205 | 1265 | |
c19d1205 ZW |
1266 | HOWTO (R_ARM_MOVW_BREL_NC, /* type */ |
1267 | 0, /* rightshift */ | |
1268 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1269 | 16, /* bitsize */ | |
1270 | FALSE, /* pc_relative */ | |
1271 | 0, /* bitpos */ | |
1272 | complain_overflow_dont,/* complain_on_overflow */ | |
1273 | bfd_elf_generic_reloc, /* special_function */ | |
1274 | "R_ARM_MOVW_BREL_NC", /* name */ | |
1275 | FALSE, /* partial_inplace */ | |
1276 | 0x0000ffff, /* src_mask */ | |
1277 | 0x0000ffff, /* dst_mask */ | |
1278 | FALSE), /* pcrel_offset */ | |
1279 | ||
1280 | HOWTO (R_ARM_MOVT_BREL, /* type */ | |
1281 | 0, /* rightshift */ | |
1282 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1283 | 16, /* bitsize */ | |
1284 | FALSE, /* pc_relative */ | |
1285 | 0, /* bitpos */ | |
1286 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1287 | bfd_elf_generic_reloc, /* special_function */ | |
1288 | "R_ARM_MOVT_BREL", /* name */ | |
1289 | FALSE, /* partial_inplace */ | |
1290 | 0x0000ffff, /* src_mask */ | |
1291 | 0x0000ffff, /* dst_mask */ | |
1292 | FALSE), /* pcrel_offset */ | |
1293 | ||
1294 | HOWTO (R_ARM_MOVW_BREL, /* type */ | |
1295 | 0, /* rightshift */ | |
1296 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1297 | 16, /* bitsize */ | |
1298 | FALSE, /* pc_relative */ | |
1299 | 0, /* bitpos */ | |
1300 | complain_overflow_dont,/* complain_on_overflow */ | |
1301 | bfd_elf_generic_reloc, /* special_function */ | |
1302 | "R_ARM_MOVW_BREL", /* name */ | |
1303 | FALSE, /* partial_inplace */ | |
1304 | 0x0000ffff, /* src_mask */ | |
1305 | 0x0000ffff, /* dst_mask */ | |
1306 | FALSE), /* pcrel_offset */ | |
1307 | ||
1308 | HOWTO (R_ARM_THM_MOVW_BREL_NC,/* type */ | |
1309 | 0, /* rightshift */ | |
1310 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1311 | 16, /* bitsize */ | |
1312 | FALSE, /* pc_relative */ | |
1313 | 0, /* bitpos */ | |
1314 | complain_overflow_dont,/* complain_on_overflow */ | |
1315 | bfd_elf_generic_reloc, /* special_function */ | |
1316 | "R_ARM_THM_MOVW_BREL_NC",/* name */ | |
1317 | FALSE, /* partial_inplace */ | |
1318 | 0x040f70ff, /* src_mask */ | |
1319 | 0x040f70ff, /* dst_mask */ | |
1320 | FALSE), /* pcrel_offset */ | |
1321 | ||
1322 | HOWTO (R_ARM_THM_MOVT_BREL, /* type */ | |
1323 | 0, /* rightshift */ | |
1324 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1325 | 16, /* bitsize */ | |
1326 | FALSE, /* pc_relative */ | |
1327 | 0, /* bitpos */ | |
1328 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1329 | bfd_elf_generic_reloc, /* special_function */ | |
1330 | "R_ARM_THM_MOVT_BREL", /* name */ | |
1331 | FALSE, /* partial_inplace */ | |
1332 | 0x040f70ff, /* src_mask */ | |
1333 | 0x040f70ff, /* dst_mask */ | |
1334 | FALSE), /* pcrel_offset */ | |
1335 | ||
1336 | HOWTO (R_ARM_THM_MOVW_BREL, /* type */ | |
1337 | 0, /* rightshift */ | |
1338 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1339 | 16, /* bitsize */ | |
1340 | FALSE, /* pc_relative */ | |
1341 | 0, /* bitpos */ | |
1342 | complain_overflow_dont,/* complain_on_overflow */ | |
1343 | bfd_elf_generic_reloc, /* special_function */ | |
1344 | "R_ARM_THM_MOVW_BREL", /* name */ | |
1345 | FALSE, /* partial_inplace */ | |
1346 | 0x040f70ff, /* src_mask */ | |
1347 | 0x040f70ff, /* dst_mask */ | |
1348 | FALSE), /* pcrel_offset */ | |
1349 | ||
8029a119 | 1350 | EMPTY_HOWTO (90), /* Unallocated. */ |
c19d1205 ZW |
1351 | EMPTY_HOWTO (91), |
1352 | EMPTY_HOWTO (92), | |
1353 | EMPTY_HOWTO (93), | |
1354 | ||
1355 | HOWTO (R_ARM_PLT32_ABS, /* type */ | |
1356 | 0, /* rightshift */ | |
1357 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1358 | 32, /* bitsize */ | |
1359 | FALSE, /* pc_relative */ | |
1360 | 0, /* bitpos */ | |
1361 | complain_overflow_dont,/* complain_on_overflow */ | |
1362 | bfd_elf_generic_reloc, /* special_function */ | |
1363 | "R_ARM_PLT32_ABS", /* name */ | |
1364 | FALSE, /* partial_inplace */ | |
1365 | 0xffffffff, /* src_mask */ | |
1366 | 0xffffffff, /* dst_mask */ | |
1367 | FALSE), /* pcrel_offset */ | |
1368 | ||
1369 | HOWTO (R_ARM_GOT_ABS, /* type */ | |
1370 | 0, /* rightshift */ | |
1371 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1372 | 32, /* bitsize */ | |
1373 | FALSE, /* pc_relative */ | |
1374 | 0, /* bitpos */ | |
1375 | complain_overflow_dont,/* complain_on_overflow */ | |
1376 | bfd_elf_generic_reloc, /* special_function */ | |
1377 | "R_ARM_GOT_ABS", /* name */ | |
1378 | FALSE, /* partial_inplace */ | |
1379 | 0xffffffff, /* src_mask */ | |
1380 | 0xffffffff, /* dst_mask */ | |
1381 | FALSE), /* pcrel_offset */ | |
1382 | ||
1383 | HOWTO (R_ARM_GOT_PREL, /* type */ | |
1384 | 0, /* rightshift */ | |
1385 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1386 | 32, /* bitsize */ | |
1387 | TRUE, /* pc_relative */ | |
1388 | 0, /* bitpos */ | |
1389 | complain_overflow_dont, /* complain_on_overflow */ | |
1390 | bfd_elf_generic_reloc, /* special_function */ | |
1391 | "R_ARM_GOT_PREL", /* name */ | |
1392 | FALSE, /* partial_inplace */ | |
1393 | 0xffffffff, /* src_mask */ | |
1394 | 0xffffffff, /* dst_mask */ | |
1395 | TRUE), /* pcrel_offset */ | |
1396 | ||
1397 | HOWTO (R_ARM_GOT_BREL12, /* type */ | |
1398 | 0, /* rightshift */ | |
1399 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1400 | 12, /* bitsize */ | |
1401 | FALSE, /* pc_relative */ | |
1402 | 0, /* bitpos */ | |
1403 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1404 | bfd_elf_generic_reloc, /* special_function */ | |
1405 | "R_ARM_GOT_BREL12", /* name */ | |
1406 | FALSE, /* partial_inplace */ | |
1407 | 0x00000fff, /* src_mask */ | |
1408 | 0x00000fff, /* dst_mask */ | |
1409 | FALSE), /* pcrel_offset */ | |
1410 | ||
1411 | HOWTO (R_ARM_GOTOFF12, /* type */ | |
1412 | 0, /* rightshift */ | |
1413 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1414 | 12, /* bitsize */ | |
1415 | FALSE, /* pc_relative */ | |
1416 | 0, /* bitpos */ | |
1417 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1418 | bfd_elf_generic_reloc, /* special_function */ | |
1419 | "R_ARM_GOTOFF12", /* name */ | |
1420 | FALSE, /* partial_inplace */ | |
1421 | 0x00000fff, /* src_mask */ | |
1422 | 0x00000fff, /* dst_mask */ | |
1423 | FALSE), /* pcrel_offset */ | |
1424 | ||
1425 | EMPTY_HOWTO (R_ARM_GOTRELAX), /* reserved for future GOT-load optimizations */ | |
1426 | ||
1427 | /* GNU extension to record C++ vtable member usage */ | |
1428 | HOWTO (R_ARM_GNU_VTENTRY, /* type */ | |
ba93b8ac DJ |
1429 | 0, /* rightshift */ |
1430 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c19d1205 | 1431 | 0, /* bitsize */ |
ba93b8ac DJ |
1432 | FALSE, /* pc_relative */ |
1433 | 0, /* bitpos */ | |
c19d1205 ZW |
1434 | complain_overflow_dont, /* complain_on_overflow */ |
1435 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
1436 | "R_ARM_GNU_VTENTRY", /* name */ | |
1437 | FALSE, /* partial_inplace */ | |
1438 | 0, /* src_mask */ | |
1439 | 0, /* dst_mask */ | |
1440 | FALSE), /* pcrel_offset */ | |
1441 | ||
1442 | /* GNU extension to record C++ vtable hierarchy */ | |
1443 | HOWTO (R_ARM_GNU_VTINHERIT, /* type */ | |
1444 | 0, /* rightshift */ | |
1445 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1446 | 0, /* bitsize */ | |
1447 | FALSE, /* pc_relative */ | |
1448 | 0, /* bitpos */ | |
1449 | complain_overflow_dont, /* complain_on_overflow */ | |
1450 | NULL, /* special_function */ | |
1451 | "R_ARM_GNU_VTINHERIT", /* name */ | |
1452 | FALSE, /* partial_inplace */ | |
1453 | 0, /* src_mask */ | |
1454 | 0, /* dst_mask */ | |
1455 | FALSE), /* pcrel_offset */ | |
1456 | ||
1457 | HOWTO (R_ARM_THM_JUMP11, /* type */ | |
1458 | 1, /* rightshift */ | |
1459 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1460 | 11, /* bitsize */ | |
1461 | TRUE, /* pc_relative */ | |
1462 | 0, /* bitpos */ | |
1463 | complain_overflow_signed, /* complain_on_overflow */ | |
1464 | bfd_elf_generic_reloc, /* special_function */ | |
1465 | "R_ARM_THM_JUMP11", /* name */ | |
1466 | FALSE, /* partial_inplace */ | |
1467 | 0x000007ff, /* src_mask */ | |
1468 | 0x000007ff, /* dst_mask */ | |
1469 | TRUE), /* pcrel_offset */ | |
1470 | ||
1471 | HOWTO (R_ARM_THM_JUMP8, /* type */ | |
1472 | 1, /* rightshift */ | |
1473 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1474 | 8, /* bitsize */ | |
1475 | TRUE, /* pc_relative */ | |
1476 | 0, /* bitpos */ | |
1477 | complain_overflow_signed, /* complain_on_overflow */ | |
1478 | bfd_elf_generic_reloc, /* special_function */ | |
1479 | "R_ARM_THM_JUMP8", /* name */ | |
1480 | FALSE, /* partial_inplace */ | |
1481 | 0x000000ff, /* src_mask */ | |
1482 | 0x000000ff, /* dst_mask */ | |
1483 | TRUE), /* pcrel_offset */ | |
ba93b8ac | 1484 | |
c19d1205 ZW |
1485 | /* TLS relocations */ |
1486 | HOWTO (R_ARM_TLS_GD32, /* type */ | |
ba93b8ac DJ |
1487 | 0, /* rightshift */ |
1488 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1489 | 32, /* bitsize */ | |
1490 | FALSE, /* pc_relative */ | |
1491 | 0, /* bitpos */ | |
1492 | complain_overflow_bitfield,/* complain_on_overflow */ | |
c19d1205 ZW |
1493 | NULL, /* special_function */ |
1494 | "R_ARM_TLS_GD32", /* name */ | |
ba93b8ac DJ |
1495 | TRUE, /* partial_inplace */ |
1496 | 0xffffffff, /* src_mask */ | |
1497 | 0xffffffff, /* dst_mask */ | |
c19d1205 | 1498 | FALSE), /* pcrel_offset */ |
ba93b8ac | 1499 | |
ba93b8ac DJ |
1500 | HOWTO (R_ARM_TLS_LDM32, /* type */ |
1501 | 0, /* rightshift */ | |
1502 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1503 | 32, /* bitsize */ | |
1504 | FALSE, /* pc_relative */ | |
1505 | 0, /* bitpos */ | |
1506 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1507 | bfd_elf_generic_reloc, /* special_function */ | |
1508 | "R_ARM_TLS_LDM32", /* name */ | |
1509 | TRUE, /* partial_inplace */ | |
1510 | 0xffffffff, /* src_mask */ | |
1511 | 0xffffffff, /* dst_mask */ | |
c19d1205 | 1512 | FALSE), /* pcrel_offset */ |
ba93b8ac | 1513 | |
c19d1205 | 1514 | HOWTO (R_ARM_TLS_LDO32, /* type */ |
ba93b8ac DJ |
1515 | 0, /* rightshift */ |
1516 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1517 | 32, /* bitsize */ | |
1518 | FALSE, /* pc_relative */ | |
1519 | 0, /* bitpos */ | |
1520 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1521 | bfd_elf_generic_reloc, /* special_function */ | |
c19d1205 | 1522 | "R_ARM_TLS_LDO32", /* name */ |
ba93b8ac DJ |
1523 | TRUE, /* partial_inplace */ |
1524 | 0xffffffff, /* src_mask */ | |
1525 | 0xffffffff, /* dst_mask */ | |
c19d1205 | 1526 | FALSE), /* pcrel_offset */ |
ba93b8ac | 1527 | |
ba93b8ac DJ |
1528 | HOWTO (R_ARM_TLS_IE32, /* type */ |
1529 | 0, /* rightshift */ | |
1530 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1531 | 32, /* bitsize */ | |
1532 | FALSE, /* pc_relative */ | |
1533 | 0, /* bitpos */ | |
1534 | complain_overflow_bitfield,/* complain_on_overflow */ | |
1535 | NULL, /* special_function */ | |
1536 | "R_ARM_TLS_IE32", /* name */ | |
1537 | TRUE, /* partial_inplace */ | |
1538 | 0xffffffff, /* src_mask */ | |
1539 | 0xffffffff, /* dst_mask */ | |
c19d1205 | 1540 | FALSE), /* pcrel_offset */ |
7f266840 | 1541 | |
c19d1205 | 1542 | HOWTO (R_ARM_TLS_LE32, /* type */ |
7f266840 DJ |
1543 | 0, /* rightshift */ |
1544 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c19d1205 | 1545 | 32, /* bitsize */ |
7f266840 DJ |
1546 | FALSE, /* pc_relative */ |
1547 | 0, /* bitpos */ | |
c19d1205 ZW |
1548 | complain_overflow_bitfield,/* complain_on_overflow */ |
1549 | bfd_elf_generic_reloc, /* special_function */ | |
1550 | "R_ARM_TLS_LE32", /* name */ | |
1551 | TRUE, /* partial_inplace */ | |
1552 | 0xffffffff, /* src_mask */ | |
1553 | 0xffffffff, /* dst_mask */ | |
1554 | FALSE), /* pcrel_offset */ | |
7f266840 | 1555 | |
c19d1205 ZW |
1556 | HOWTO (R_ARM_TLS_LDO12, /* type */ |
1557 | 0, /* rightshift */ | |
1558 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1559 | 12, /* bitsize */ | |
1560 | FALSE, /* pc_relative */ | |
7f266840 | 1561 | 0, /* bitpos */ |
c19d1205 | 1562 | complain_overflow_bitfield,/* complain_on_overflow */ |
7f266840 | 1563 | bfd_elf_generic_reloc, /* special_function */ |
c19d1205 | 1564 | "R_ARM_TLS_LDO12", /* name */ |
7f266840 | 1565 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
1566 | 0x00000fff, /* src_mask */ |
1567 | 0x00000fff, /* dst_mask */ | |
1568 | FALSE), /* pcrel_offset */ | |
7f266840 | 1569 | |
c19d1205 ZW |
1570 | HOWTO (R_ARM_TLS_LE12, /* type */ |
1571 | 0, /* rightshift */ | |
1572 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1573 | 12, /* bitsize */ | |
1574 | FALSE, /* pc_relative */ | |
7f266840 | 1575 | 0, /* bitpos */ |
c19d1205 | 1576 | complain_overflow_bitfield,/* complain_on_overflow */ |
7f266840 | 1577 | bfd_elf_generic_reloc, /* special_function */ |
c19d1205 | 1578 | "R_ARM_TLS_LE12", /* name */ |
7f266840 | 1579 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
1580 | 0x00000fff, /* src_mask */ |
1581 | 0x00000fff, /* dst_mask */ | |
1582 | FALSE), /* pcrel_offset */ | |
7f266840 | 1583 | |
c19d1205 | 1584 | HOWTO (R_ARM_TLS_IE12GP, /* type */ |
7f266840 DJ |
1585 | 0, /* rightshift */ |
1586 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
c19d1205 ZW |
1587 | 12, /* bitsize */ |
1588 | FALSE, /* pc_relative */ | |
7f266840 | 1589 | 0, /* bitpos */ |
c19d1205 | 1590 | complain_overflow_bitfield,/* complain_on_overflow */ |
7f266840 | 1591 | bfd_elf_generic_reloc, /* special_function */ |
c19d1205 | 1592 | "R_ARM_TLS_IE12GP", /* name */ |
7f266840 | 1593 | FALSE, /* partial_inplace */ |
c19d1205 ZW |
1594 | 0x00000fff, /* src_mask */ |
1595 | 0x00000fff, /* dst_mask */ | |
1596 | FALSE), /* pcrel_offset */ | |
1597 | }; | |
1598 | ||
1599 | /* 112-127 private relocations | |
1600 | 128 R_ARM_ME_TOO, obsolete | |
1601 | 129-255 unallocated in AAELF. | |
7f266840 | 1602 | |
c19d1205 ZW |
1603 | 249-255 extended, currently unused, relocations: */ |
1604 | ||
4962c51a | 1605 | static reloc_howto_type elf32_arm_howto_table_2[4] = |
7f266840 DJ |
1606 | { |
1607 | HOWTO (R_ARM_RREL32, /* type */ | |
1608 | 0, /* rightshift */ | |
1609 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1610 | 0, /* bitsize */ | |
1611 | FALSE, /* pc_relative */ | |
1612 | 0, /* bitpos */ | |
1613 | complain_overflow_dont,/* complain_on_overflow */ | |
1614 | bfd_elf_generic_reloc, /* special_function */ | |
1615 | "R_ARM_RREL32", /* name */ | |
1616 | FALSE, /* partial_inplace */ | |
1617 | 0, /* src_mask */ | |
1618 | 0, /* dst_mask */ | |
1619 | FALSE), /* pcrel_offset */ | |
1620 | ||
1621 | HOWTO (R_ARM_RABS32, /* type */ | |
1622 | 0, /* rightshift */ | |
1623 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1624 | 0, /* bitsize */ | |
1625 | FALSE, /* pc_relative */ | |
1626 | 0, /* bitpos */ | |
1627 | complain_overflow_dont,/* complain_on_overflow */ | |
1628 | bfd_elf_generic_reloc, /* special_function */ | |
1629 | "R_ARM_RABS32", /* name */ | |
1630 | FALSE, /* partial_inplace */ | |
1631 | 0, /* src_mask */ | |
1632 | 0, /* dst_mask */ | |
1633 | FALSE), /* pcrel_offset */ | |
1634 | ||
1635 | HOWTO (R_ARM_RPC24, /* type */ | |
1636 | 0, /* rightshift */ | |
1637 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1638 | 0, /* bitsize */ | |
1639 | FALSE, /* pc_relative */ | |
1640 | 0, /* bitpos */ | |
1641 | complain_overflow_dont,/* complain_on_overflow */ | |
1642 | bfd_elf_generic_reloc, /* special_function */ | |
1643 | "R_ARM_RPC24", /* name */ | |
1644 | FALSE, /* partial_inplace */ | |
1645 | 0, /* src_mask */ | |
1646 | 0, /* dst_mask */ | |
1647 | FALSE), /* pcrel_offset */ | |
1648 | ||
1649 | HOWTO (R_ARM_RBASE, /* type */ | |
1650 | 0, /* rightshift */ | |
1651 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1652 | 0, /* bitsize */ | |
1653 | FALSE, /* pc_relative */ | |
1654 | 0, /* bitpos */ | |
1655 | complain_overflow_dont,/* complain_on_overflow */ | |
1656 | bfd_elf_generic_reloc, /* special_function */ | |
1657 | "R_ARM_RBASE", /* name */ | |
1658 | FALSE, /* partial_inplace */ | |
1659 | 0, /* src_mask */ | |
1660 | 0, /* dst_mask */ | |
1661 | FALSE) /* pcrel_offset */ | |
1662 | }; | |
1663 | ||
1664 | static reloc_howto_type * | |
1665 | elf32_arm_howto_from_type (unsigned int r_type) | |
1666 | { | |
906e58ca | 1667 | if (r_type < ARRAY_SIZE (elf32_arm_howto_table_1)) |
c19d1205 | 1668 | return &elf32_arm_howto_table_1[r_type]; |
ba93b8ac | 1669 | |
c19d1205 | 1670 | if (r_type >= R_ARM_RREL32 |
906e58ca | 1671 | && r_type < R_ARM_RREL32 + ARRAY_SIZE (elf32_arm_howto_table_2)) |
4962c51a | 1672 | return &elf32_arm_howto_table_2[r_type - R_ARM_RREL32]; |
7f266840 | 1673 | |
c19d1205 | 1674 | return NULL; |
7f266840 DJ |
1675 | } |
1676 | ||
1677 | static void | |
1678 | elf32_arm_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED, arelent * bfd_reloc, | |
1679 | Elf_Internal_Rela * elf_reloc) | |
1680 | { | |
1681 | unsigned int r_type; | |
1682 | ||
1683 | r_type = ELF32_R_TYPE (elf_reloc->r_info); | |
1684 | bfd_reloc->howto = elf32_arm_howto_from_type (r_type); | |
1685 | } | |
1686 | ||
1687 | struct elf32_arm_reloc_map | |
1688 | { | |
1689 | bfd_reloc_code_real_type bfd_reloc_val; | |
1690 | unsigned char elf_reloc_val; | |
1691 | }; | |
1692 | ||
1693 | /* All entries in this list must also be present in elf32_arm_howto_table. */ | |
1694 | static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] = | |
1695 | { | |
1696 | {BFD_RELOC_NONE, R_ARM_NONE}, | |
1697 | {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24}, | |
39b41c9c PB |
1698 | {BFD_RELOC_ARM_PCREL_CALL, R_ARM_CALL}, |
1699 | {BFD_RELOC_ARM_PCREL_JUMP, R_ARM_JUMP24}, | |
7f266840 DJ |
1700 | {BFD_RELOC_ARM_PCREL_BLX, R_ARM_XPC25}, |
1701 | {BFD_RELOC_THUMB_PCREL_BLX, R_ARM_THM_XPC22}, | |
1702 | {BFD_RELOC_32, R_ARM_ABS32}, | |
1703 | {BFD_RELOC_32_PCREL, R_ARM_REL32}, | |
1704 | {BFD_RELOC_8, R_ARM_ABS8}, | |
1705 | {BFD_RELOC_16, R_ARM_ABS16}, | |
1706 | {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12}, | |
1707 | {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5}, | |
c19d1205 ZW |
1708 | {BFD_RELOC_THUMB_PCREL_BRANCH25, R_ARM_THM_JUMP24}, |
1709 | {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_CALL}, | |
1710 | {BFD_RELOC_THUMB_PCREL_BRANCH12, R_ARM_THM_JUMP11}, | |
1711 | {BFD_RELOC_THUMB_PCREL_BRANCH20, R_ARM_THM_JUMP19}, | |
1712 | {BFD_RELOC_THUMB_PCREL_BRANCH9, R_ARM_THM_JUMP8}, | |
1713 | {BFD_RELOC_THUMB_PCREL_BRANCH7, R_ARM_THM_JUMP6}, | |
7f266840 DJ |
1714 | {BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT}, |
1715 | {BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT}, | |
1716 | {BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE}, | |
c19d1205 | 1717 | {BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF32}, |
7f266840 DJ |
1718 | {BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC}, |
1719 | {BFD_RELOC_ARM_GOT32, R_ARM_GOT32}, | |
1720 | {BFD_RELOC_ARM_PLT32, R_ARM_PLT32}, | |
1721 | {BFD_RELOC_ARM_TARGET1, R_ARM_TARGET1}, | |
1722 | {BFD_RELOC_ARM_ROSEGREL32, R_ARM_ROSEGREL32}, | |
1723 | {BFD_RELOC_ARM_SBREL32, R_ARM_SBREL32}, | |
1724 | {BFD_RELOC_ARM_PREL31, R_ARM_PREL31}, | |
ba93b8ac DJ |
1725 | {BFD_RELOC_ARM_TARGET2, R_ARM_TARGET2}, |
1726 | {BFD_RELOC_ARM_PLT32, R_ARM_PLT32}, | |
1727 | {BFD_RELOC_ARM_TLS_GD32, R_ARM_TLS_GD32}, | |
1728 | {BFD_RELOC_ARM_TLS_LDO32, R_ARM_TLS_LDO32}, | |
1729 | {BFD_RELOC_ARM_TLS_LDM32, R_ARM_TLS_LDM32}, | |
1730 | {BFD_RELOC_ARM_TLS_DTPMOD32, R_ARM_TLS_DTPMOD32}, | |
1731 | {BFD_RELOC_ARM_TLS_DTPOFF32, R_ARM_TLS_DTPOFF32}, | |
1732 | {BFD_RELOC_ARM_TLS_TPOFF32, R_ARM_TLS_TPOFF32}, | |
1733 | {BFD_RELOC_ARM_TLS_IE32, R_ARM_TLS_IE32}, | |
1734 | {BFD_RELOC_ARM_TLS_LE32, R_ARM_TLS_LE32}, | |
c19d1205 ZW |
1735 | {BFD_RELOC_VTABLE_INHERIT, R_ARM_GNU_VTINHERIT}, |
1736 | {BFD_RELOC_VTABLE_ENTRY, R_ARM_GNU_VTENTRY}, | |
b6895b4f PB |
1737 | {BFD_RELOC_ARM_MOVW, R_ARM_MOVW_ABS_NC}, |
1738 | {BFD_RELOC_ARM_MOVT, R_ARM_MOVT_ABS}, | |
1739 | {BFD_RELOC_ARM_MOVW_PCREL, R_ARM_MOVW_PREL_NC}, | |
1740 | {BFD_RELOC_ARM_MOVT_PCREL, R_ARM_MOVT_PREL}, | |
1741 | {BFD_RELOC_ARM_THUMB_MOVW, R_ARM_THM_MOVW_ABS_NC}, | |
1742 | {BFD_RELOC_ARM_THUMB_MOVT, R_ARM_THM_MOVT_ABS}, | |
1743 | {BFD_RELOC_ARM_THUMB_MOVW_PCREL, R_ARM_THM_MOVW_PREL_NC}, | |
1744 | {BFD_RELOC_ARM_THUMB_MOVT_PCREL, R_ARM_THM_MOVT_PREL}, | |
4962c51a MS |
1745 | {BFD_RELOC_ARM_ALU_PC_G0_NC, R_ARM_ALU_PC_G0_NC}, |
1746 | {BFD_RELOC_ARM_ALU_PC_G0, R_ARM_ALU_PC_G0}, | |
1747 | {BFD_RELOC_ARM_ALU_PC_G1_NC, R_ARM_ALU_PC_G1_NC}, | |
1748 | {BFD_RELOC_ARM_ALU_PC_G1, R_ARM_ALU_PC_G1}, | |
1749 | {BFD_RELOC_ARM_ALU_PC_G2, R_ARM_ALU_PC_G2}, | |
1750 | {BFD_RELOC_ARM_LDR_PC_G0, R_ARM_LDR_PC_G0}, | |
1751 | {BFD_RELOC_ARM_LDR_PC_G1, R_ARM_LDR_PC_G1}, | |
1752 | {BFD_RELOC_ARM_LDR_PC_G2, R_ARM_LDR_PC_G2}, | |
1753 | {BFD_RELOC_ARM_LDRS_PC_G0, R_ARM_LDRS_PC_G0}, | |
1754 | {BFD_RELOC_ARM_LDRS_PC_G1, R_ARM_LDRS_PC_G1}, | |
1755 | {BFD_RELOC_ARM_LDRS_PC_G2, R_ARM_LDRS_PC_G2}, | |
1756 | {BFD_RELOC_ARM_LDC_PC_G0, R_ARM_LDC_PC_G0}, | |
1757 | {BFD_RELOC_ARM_LDC_PC_G1, R_ARM_LDC_PC_G1}, | |
1758 | {BFD_RELOC_ARM_LDC_PC_G2, R_ARM_LDC_PC_G2}, | |
1759 | {BFD_RELOC_ARM_ALU_SB_G0_NC, R_ARM_ALU_SB_G0_NC}, | |
1760 | {BFD_RELOC_ARM_ALU_SB_G0, R_ARM_ALU_SB_G0}, | |
1761 | {BFD_RELOC_ARM_ALU_SB_G1_NC, R_ARM_ALU_SB_G1_NC}, | |
1762 | {BFD_RELOC_ARM_ALU_SB_G1, R_ARM_ALU_SB_G1}, | |
1763 | {BFD_RELOC_ARM_ALU_SB_G2, R_ARM_ALU_SB_G2}, | |
1764 | {BFD_RELOC_ARM_LDR_SB_G0, R_ARM_LDR_SB_G0}, | |
1765 | {BFD_RELOC_ARM_LDR_SB_G1, R_ARM_LDR_SB_G1}, | |
1766 | {BFD_RELOC_ARM_LDR_SB_G2, R_ARM_LDR_SB_G2}, | |
1767 | {BFD_RELOC_ARM_LDRS_SB_G0, R_ARM_LDRS_SB_G0}, | |
1768 | {BFD_RELOC_ARM_LDRS_SB_G1, R_ARM_LDRS_SB_G1}, | |
1769 | {BFD_RELOC_ARM_LDRS_SB_G2, R_ARM_LDRS_SB_G2}, | |
1770 | {BFD_RELOC_ARM_LDC_SB_G0, R_ARM_LDC_SB_G0}, | |
1771 | {BFD_RELOC_ARM_LDC_SB_G1, R_ARM_LDC_SB_G1}, | |
845b51d6 PB |
1772 | {BFD_RELOC_ARM_LDC_SB_G2, R_ARM_LDC_SB_G2}, |
1773 | {BFD_RELOC_ARM_V4BX, R_ARM_V4BX} | |
7f266840 DJ |
1774 | }; |
1775 | ||
1776 | static reloc_howto_type * | |
f1c71a59 ZW |
1777 | elf32_arm_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
1778 | bfd_reloc_code_real_type code) | |
7f266840 DJ |
1779 | { |
1780 | unsigned int i; | |
8029a119 | 1781 | |
906e58ca | 1782 | for (i = 0; i < ARRAY_SIZE (elf32_arm_reloc_map); i ++) |
c19d1205 ZW |
1783 | if (elf32_arm_reloc_map[i].bfd_reloc_val == code) |
1784 | return elf32_arm_howto_from_type (elf32_arm_reloc_map[i].elf_reloc_val); | |
7f266840 | 1785 | |
c19d1205 | 1786 | return NULL; |
7f266840 DJ |
1787 | } |
1788 | ||
157090f7 AM |
1789 | static reloc_howto_type * |
1790 | elf32_arm_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
1791 | const char *r_name) | |
1792 | { | |
1793 | unsigned int i; | |
1794 | ||
906e58ca | 1795 | for (i = 0; i < ARRAY_SIZE (elf32_arm_howto_table_1); i++) |
157090f7 AM |
1796 | if (elf32_arm_howto_table_1[i].name != NULL |
1797 | && strcasecmp (elf32_arm_howto_table_1[i].name, r_name) == 0) | |
1798 | return &elf32_arm_howto_table_1[i]; | |
1799 | ||
906e58ca | 1800 | for (i = 0; i < ARRAY_SIZE (elf32_arm_howto_table_2); i++) |
157090f7 AM |
1801 | if (elf32_arm_howto_table_2[i].name != NULL |
1802 | && strcasecmp (elf32_arm_howto_table_2[i].name, r_name) == 0) | |
1803 | return &elf32_arm_howto_table_2[i]; | |
1804 | ||
1805 | return NULL; | |
1806 | } | |
1807 | ||
906e58ca NC |
1808 | /* Support for core dump NOTE sections. */ |
1809 | ||
7f266840 | 1810 | static bfd_boolean |
f1c71a59 | 1811 | elf32_arm_nabi_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
7f266840 DJ |
1812 | { |
1813 | int offset; | |
1814 | size_t size; | |
1815 | ||
1816 | switch (note->descsz) | |
1817 | { | |
1818 | default: | |
1819 | return FALSE; | |
1820 | ||
8029a119 | 1821 | case 148: /* Linux/ARM 32-bit. */ |
7f266840 DJ |
1822 | /* pr_cursig */ |
1823 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
1824 | ||
1825 | /* pr_pid */ | |
1826 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); | |
1827 | ||
1828 | /* pr_reg */ | |
1829 | offset = 72; | |
1830 | size = 72; | |
1831 | ||
1832 | break; | |
1833 | } | |
1834 | ||
1835 | /* Make a ".reg/999" section. */ | |
1836 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
1837 | size, note->descpos + offset); | |
1838 | } | |
1839 | ||
1840 | static bfd_boolean | |
f1c71a59 | 1841 | elf32_arm_nabi_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
7f266840 DJ |
1842 | { |
1843 | switch (note->descsz) | |
1844 | { | |
1845 | default: | |
1846 | return FALSE; | |
1847 | ||
8029a119 | 1848 | case 124: /* Linux/ARM elf_prpsinfo. */ |
7f266840 DJ |
1849 | elf_tdata (abfd)->core_program |
1850 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); | |
1851 | elf_tdata (abfd)->core_command | |
1852 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); | |
1853 | } | |
1854 | ||
1855 | /* Note that for some reason, a spurious space is tacked | |
1856 | onto the end of the args in some (at least one anyway) | |
1857 | implementations, so strip it off if it exists. */ | |
7f266840 DJ |
1858 | { |
1859 | char *command = elf_tdata (abfd)->core_command; | |
1860 | int n = strlen (command); | |
1861 | ||
1862 | if (0 < n && command[n - 1] == ' ') | |
1863 | command[n - 1] = '\0'; | |
1864 | } | |
1865 | ||
1866 | return TRUE; | |
1867 | } | |
1868 | ||
1869 | #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec | |
1870 | #define TARGET_LITTLE_NAME "elf32-littlearm" | |
1871 | #define TARGET_BIG_SYM bfd_elf32_bigarm_vec | |
1872 | #define TARGET_BIG_NAME "elf32-bigarm" | |
1873 | ||
1874 | #define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus | |
1875 | #define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo | |
1876 | ||
252b5132 RH |
1877 | typedef unsigned long int insn32; |
1878 | typedef unsigned short int insn16; | |
1879 | ||
3a4a14e9 PB |
1880 | /* In lieu of proper flags, assume all EABIv4 or later objects are |
1881 | interworkable. */ | |
57e8b36a | 1882 | #define INTERWORK_FLAG(abfd) \ |
3a4a14e9 | 1883 | (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \ |
85a84e7a | 1884 | || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK)) |
9b485d32 | 1885 | |
252b5132 RH |
1886 | /* The linker script knows the section names for placement. |
1887 | The entry_names are used to do simple name mangling on the stubs. | |
1888 | Given a function name, and its type, the stub can be found. The | |
9b485d32 | 1889 | name can be changed. The only requirement is the %s be present. */ |
252b5132 RH |
1890 | #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t" |
1891 | #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb" | |
1892 | ||
1893 | #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7" | |
1894 | #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm" | |
1895 | ||
c7b8f16e JB |
1896 | #define VFP11_ERRATUM_VENEER_SECTION_NAME ".vfp11_veneer" |
1897 | #define VFP11_ERRATUM_VENEER_ENTRY_NAME "__vfp11_veneer_%x" | |
1898 | ||
845b51d6 PB |
1899 | #define ARM_BX_GLUE_SECTION_NAME ".v4_bx" |
1900 | #define ARM_BX_GLUE_ENTRY_NAME "__bx_r%d" | |
1901 | ||
7413f23f DJ |
1902 | #define STUB_ENTRY_NAME "__%s_veneer" |
1903 | ||
252b5132 RH |
1904 | /* The name of the dynamic interpreter. This is put in the .interp |
1905 | section. */ | |
1906 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
1907 | ||
5e681ec4 PB |
1908 | #ifdef FOUR_WORD_PLT |
1909 | ||
252b5132 RH |
1910 | /* The first entry in a procedure linkage table looks like |
1911 | this. It is set up so that any shared library function that is | |
59f2c4e7 | 1912 | called before the relocation has been set up calls the dynamic |
9b485d32 | 1913 | linker first. */ |
e5a52504 | 1914 | static const bfd_vma elf32_arm_plt0_entry [] = |
5e681ec4 PB |
1915 | { |
1916 | 0xe52de004, /* str lr, [sp, #-4]! */ | |
1917 | 0xe59fe010, /* ldr lr, [pc, #16] */ | |
1918 | 0xe08fe00e, /* add lr, pc, lr */ | |
1919 | 0xe5bef008, /* ldr pc, [lr, #8]! */ | |
1920 | }; | |
1921 | ||
1922 | /* Subsequent entries in a procedure linkage table look like | |
1923 | this. */ | |
e5a52504 | 1924 | static const bfd_vma elf32_arm_plt_entry [] = |
5e681ec4 PB |
1925 | { |
1926 | 0xe28fc600, /* add ip, pc, #NN */ | |
1927 | 0xe28cca00, /* add ip, ip, #NN */ | |
1928 | 0xe5bcf000, /* ldr pc, [ip, #NN]! */ | |
1929 | 0x00000000, /* unused */ | |
1930 | }; | |
1931 | ||
1932 | #else | |
1933 | ||
5e681ec4 PB |
1934 | /* The first entry in a procedure linkage table looks like |
1935 | this. It is set up so that any shared library function that is | |
1936 | called before the relocation has been set up calls the dynamic | |
1937 | linker first. */ | |
e5a52504 | 1938 | static const bfd_vma elf32_arm_plt0_entry [] = |
917583ad | 1939 | { |
5e681ec4 PB |
1940 | 0xe52de004, /* str lr, [sp, #-4]! */ |
1941 | 0xe59fe004, /* ldr lr, [pc, #4] */ | |
1942 | 0xe08fe00e, /* add lr, pc, lr */ | |
1943 | 0xe5bef008, /* ldr pc, [lr, #8]! */ | |
1944 | 0x00000000, /* &GOT[0] - . */ | |
917583ad | 1945 | }; |
252b5132 RH |
1946 | |
1947 | /* Subsequent entries in a procedure linkage table look like | |
1948 | this. */ | |
e5a52504 | 1949 | static const bfd_vma elf32_arm_plt_entry [] = |
5e681ec4 PB |
1950 | { |
1951 | 0xe28fc600, /* add ip, pc, #0xNN00000 */ | |
1952 | 0xe28cca00, /* add ip, ip, #0xNN000 */ | |
1953 | 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */ | |
1954 | }; | |
1955 | ||
1956 | #endif | |
252b5132 | 1957 | |
00a97672 RS |
1958 | /* The format of the first entry in the procedure linkage table |
1959 | for a VxWorks executable. */ | |
1960 | static const bfd_vma elf32_arm_vxworks_exec_plt0_entry[] = | |
1961 | { | |
1962 | 0xe52dc008, /* str ip,[sp,#-8]! */ | |
1963 | 0xe59fc000, /* ldr ip,[pc] */ | |
1964 | 0xe59cf008, /* ldr pc,[ip,#8] */ | |
1965 | 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */ | |
1966 | }; | |
1967 | ||
1968 | /* The format of subsequent entries in a VxWorks executable. */ | |
1969 | static const bfd_vma elf32_arm_vxworks_exec_plt_entry[] = | |
1970 | { | |
1971 | 0xe59fc000, /* ldr ip,[pc] */ | |
1972 | 0xe59cf000, /* ldr pc,[ip] */ | |
1973 | 0x00000000, /* .long @got */ | |
1974 | 0xe59fc000, /* ldr ip,[pc] */ | |
1975 | 0xea000000, /* b _PLT */ | |
1976 | 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */ | |
1977 | }; | |
1978 | ||
1979 | /* The format of entries in a VxWorks shared library. */ | |
1980 | static const bfd_vma elf32_arm_vxworks_shared_plt_entry[] = | |
1981 | { | |
1982 | 0xe59fc000, /* ldr ip,[pc] */ | |
1983 | 0xe79cf009, /* ldr pc,[ip,r9] */ | |
1984 | 0x00000000, /* .long @got */ | |
1985 | 0xe59fc000, /* ldr ip,[pc] */ | |
1986 | 0xe599f008, /* ldr pc,[r9,#8] */ | |
1987 | 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */ | |
1988 | }; | |
1989 | ||
b7693d02 DJ |
1990 | /* An initial stub used if the PLT entry is referenced from Thumb code. */ |
1991 | #define PLT_THUMB_STUB_SIZE 4 | |
1992 | static const bfd_vma elf32_arm_plt_thumb_stub [] = | |
1993 | { | |
1994 | 0x4778, /* bx pc */ | |
1995 | 0x46c0 /* nop */ | |
1996 | }; | |
1997 | ||
e5a52504 MM |
1998 | /* The entries in a PLT when using a DLL-based target with multiple |
1999 | address spaces. */ | |
906e58ca | 2000 | static const bfd_vma elf32_arm_symbian_plt_entry [] = |
e5a52504 | 2001 | { |
83a358aa | 2002 | 0xe51ff004, /* ldr pc, [pc, #-4] */ |
e5a52504 MM |
2003 | 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */ |
2004 | }; | |
2005 | ||
906e58ca NC |
2006 | #define ARM_MAX_FWD_BRANCH_OFFSET ((((1 << 23) - 1) << 2) + 8) |
2007 | #define ARM_MAX_BWD_BRANCH_OFFSET ((-((1 << 23) << 2)) + 8) | |
2008 | #define THM_MAX_FWD_BRANCH_OFFSET ((1 << 22) -2 + 4) | |
2009 | #define THM_MAX_BWD_BRANCH_OFFSET (-(1 << 22) + 4) | |
2010 | #define THM2_MAX_FWD_BRANCH_OFFSET (((1 << 24) - 2) + 4) | |
2011 | #define THM2_MAX_BWD_BRANCH_OFFSET (-(1 << 24) + 4) | |
2012 | ||
461a49ca DJ |
2013 | enum stub_insn_type |
2014 | { | |
2015 | THUMB16_TYPE = 1, | |
2016 | THUMB32_TYPE, | |
2017 | ARM_TYPE, | |
2018 | DATA_TYPE | |
2019 | }; | |
2020 | ||
2021 | enum stub_reloc_type | |
2022 | { | |
2023 | STUB_RELOC_NONE = 0, | |
2024 | STUB_RELOC_ABS, | |
2025 | STUB_RELOC_PIC, | |
2026 | }; | |
2027 | ||
2028 | #define THUMB16_INSN(X) {(X), THUMB16_TYPE, R_ARM_NONE, 0} | |
2029 | #define THUMB32_INSN(X) {(X), THUMB32_TYPE, R_ARM_NONE, 0} | |
2030 | #define ARM_INSN(X) {(X), ARM_TYPE, R_ARM_NONE, 0} | |
2031 | #define ARM_REL_INSN(X, Z) {(X), ARM_TYPE, R_ARM_JUMP24, (Z)} | |
2032 | #define DATA_WORD(X,Y,Z) {(X), DATA_TYPE, (Y), (Z)} | |
2033 | ||
2034 | typedef struct | |
2035 | { | |
2036 | bfd_vma data; | |
2037 | enum stub_insn_type type; | |
2038 | enum stub_reloc_type reloc_type; | |
2039 | int reloc_addend; | |
2040 | } insn_sequence; | |
2041 | ||
fea2b4d6 CL |
2042 | /* Arm/Thumb -> Arm/Thumb long branch stub. On V5T and above, use blx |
2043 | to reach the stub if necessary. */ | |
461a49ca | 2044 | static const insn_sequence elf32_arm_stub_long_branch_any_any[] = |
906e58ca | 2045 | { |
461a49ca DJ |
2046 | ARM_INSN(0xe51ff004), /* ldr pc, [pc, #-4] */ |
2047 | DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */ | |
906e58ca NC |
2048 | }; |
2049 | ||
fea2b4d6 CL |
2050 | /* V4T Arm -> Thumb long branch stub. Used on V4T where blx is not |
2051 | available. */ | |
461a49ca | 2052 | static const insn_sequence elf32_arm_stub_long_branch_v4t_arm_thumb[] = |
906e58ca | 2053 | { |
461a49ca DJ |
2054 | ARM_INSN(0xe59fc000), /* ldr ip, [pc, #0] */ |
2055 | ARM_INSN(0xe12fff1c), /* bx ip */ | |
2056 | DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */ | |
906e58ca NC |
2057 | }; |
2058 | ||
fea2b4d6 CL |
2059 | /* Thumb -> Thumb long branch stub. Used on architectures which |
2060 | support only this mode, or on V4T where it is expensive to switch | |
2061 | to ARM. */ | |
461a49ca | 2062 | static const insn_sequence elf32_arm_stub_long_branch_thumb_only[] = |
906e58ca | 2063 | { |
461a49ca DJ |
2064 | THUMB16_INSN(0xb401), /* push {r0} */ |
2065 | THUMB16_INSN(0x4802), /* ldr r0, [pc, #8] */ | |
2066 | THUMB16_INSN(0x4684), /* mov ip, r0 */ | |
2067 | THUMB16_INSN(0xbc01), /* pop {r0} */ | |
2068 | THUMB16_INSN(0x4760), /* bx ip */ | |
2069 | THUMB16_INSN(0xbf00), /* nop */ | |
2070 | DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */ | |
906e58ca NC |
2071 | }; |
2072 | ||
fea2b4d6 CL |
2073 | /* V4T Thumb -> ARM long branch stub. Used on V4T where blx is not |
2074 | available. */ | |
461a49ca | 2075 | static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_arm[] = |
906e58ca | 2076 | { |
461a49ca DJ |
2077 | THUMB16_INSN(0x4778), /* bx pc */ |
2078 | THUMB16_INSN(0x46c0), /* nop */ | |
2079 | ARM_INSN(0xe51ff004), /* ldr pc, [pc, #-4] */ | |
2080 | DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */ | |
906e58ca NC |
2081 | }; |
2082 | ||
fea2b4d6 CL |
2083 | /* V4T Thumb -> ARM short branch stub. Shorter variant of the above |
2084 | one, when the destination is close enough. */ | |
461a49ca | 2085 | static const insn_sequence elf32_arm_stub_short_branch_v4t_thumb_arm[] = |
c820be07 | 2086 | { |
461a49ca DJ |
2087 | THUMB16_INSN(0x4778), /* bx pc */ |
2088 | THUMB16_INSN(0x46c0), /* nop */ | |
2089 | ARM_REL_INSN(0xea000000, -8), /* b (X-8) */ | |
c820be07 NC |
2090 | }; |
2091 | ||
fea2b4d6 CL |
2092 | /* ARM/Thumb -> ARM/Thumb long branch stub, PIC. On V5T and above, use |
2093 | blx to reach the stub if necessary. */ | |
461a49ca | 2094 | static const insn_sequence elf32_arm_stub_long_branch_any_any_pic[] = |
906e58ca | 2095 | { |
461a49ca DJ |
2096 | ARM_INSN(0xe59fc000), /* ldr r12, [pc] */ |
2097 | ARM_INSN(0xe08ff00c), /* add pc, pc, ip */ | |
2098 | DATA_WORD(0, R_ARM_REL32, -4), /* dcd R_ARM_REL32(X-4) */ | |
906e58ca NC |
2099 | }; |
2100 | ||
2101 | /* Section name for stubs is the associated section name plus this | |
2102 | string. */ | |
2103 | #define STUB_SUFFIX ".stub" | |
2104 | ||
2105 | enum elf32_arm_stub_type | |
2106 | { | |
2107 | arm_stub_none, | |
fea2b4d6 CL |
2108 | arm_stub_long_branch_any_any, |
2109 | arm_stub_long_branch_v4t_arm_thumb, | |
2110 | arm_stub_long_branch_thumb_only, | |
2111 | arm_stub_long_branch_v4t_thumb_arm, | |
2112 | arm_stub_short_branch_v4t_thumb_arm, | |
2113 | arm_stub_long_branch_any_any_pic, | |
906e58ca NC |
2114 | }; |
2115 | ||
2116 | struct elf32_arm_stub_hash_entry | |
2117 | { | |
2118 | /* Base hash table entry structure. */ | |
2119 | struct bfd_hash_entry root; | |
2120 | ||
2121 | /* The stub section. */ | |
2122 | asection *stub_sec; | |
2123 | ||
2124 | /* Offset within stub_sec of the beginning of this stub. */ | |
2125 | bfd_vma stub_offset; | |
2126 | ||
2127 | /* Given the symbol's value and its section we can determine its final | |
2128 | value when building the stubs (so the stub knows where to jump). */ | |
2129 | bfd_vma target_value; | |
2130 | asection *target_section; | |
2131 | ||
461a49ca | 2132 | /* The stub type. */ |
906e58ca | 2133 | enum elf32_arm_stub_type stub_type; |
461a49ca DJ |
2134 | /* Its encoding size in bytes. */ |
2135 | int stub_size; | |
2136 | /* Its template. */ | |
2137 | const insn_sequence *stub_template; | |
2138 | /* The size of the template (number of entries). */ | |
2139 | int stub_template_size; | |
906e58ca NC |
2140 | |
2141 | /* The symbol table entry, if any, that this was derived from. */ | |
2142 | struct elf32_arm_link_hash_entry *h; | |
2143 | ||
2144 | /* Destination symbol type (STT_ARM_TFUNC, ...) */ | |
2145 | unsigned char st_type; | |
2146 | ||
2147 | /* Where this stub is being called from, or, in the case of combined | |
2148 | stub sections, the first input section in the group. */ | |
2149 | asection *id_sec; | |
7413f23f DJ |
2150 | |
2151 | /* The name for the local symbol at the start of this stub. The | |
2152 | stub name in the hash table has to be unique; this does not, so | |
2153 | it can be friendlier. */ | |
2154 | char *output_name; | |
906e58ca NC |
2155 | }; |
2156 | ||
e489d0ae PB |
2157 | /* Used to build a map of a section. This is required for mixed-endian |
2158 | code/data. */ | |
2159 | ||
2160 | typedef struct elf32_elf_section_map | |
2161 | { | |
2162 | bfd_vma vma; | |
2163 | char type; | |
2164 | } | |
2165 | elf32_arm_section_map; | |
2166 | ||
c7b8f16e JB |
2167 | /* Information about a VFP11 erratum veneer, or a branch to such a veneer. */ |
2168 | ||
2169 | typedef enum | |
2170 | { | |
2171 | VFP11_ERRATUM_BRANCH_TO_ARM_VENEER, | |
2172 | VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER, | |
2173 | VFP11_ERRATUM_ARM_VENEER, | |
2174 | VFP11_ERRATUM_THUMB_VENEER | |
2175 | } | |
2176 | elf32_vfp11_erratum_type; | |
2177 | ||
2178 | typedef struct elf32_vfp11_erratum_list | |
2179 | { | |
2180 | struct elf32_vfp11_erratum_list *next; | |
2181 | bfd_vma vma; | |
2182 | union | |
2183 | { | |
2184 | struct | |
2185 | { | |
2186 | struct elf32_vfp11_erratum_list *veneer; | |
2187 | unsigned int vfp_insn; | |
2188 | } b; | |
2189 | struct | |
2190 | { | |
2191 | struct elf32_vfp11_erratum_list *branch; | |
2192 | unsigned int id; | |
2193 | } v; | |
2194 | } u; | |
2195 | elf32_vfp11_erratum_type type; | |
2196 | } | |
2197 | elf32_vfp11_erratum_list; | |
2198 | ||
8e3de13a | 2199 | typedef struct _arm_elf_section_data |
e489d0ae PB |
2200 | { |
2201 | struct bfd_elf_section_data elf; | |
8e3de13a | 2202 | unsigned int mapcount; |
c7b8f16e | 2203 | unsigned int mapsize; |
e489d0ae | 2204 | elf32_arm_section_map *map; |
c7b8f16e JB |
2205 | unsigned int erratumcount; |
2206 | elf32_vfp11_erratum_list *erratumlist; | |
8e3de13a NC |
2207 | } |
2208 | _arm_elf_section_data; | |
e489d0ae PB |
2209 | |
2210 | #define elf32_arm_section_data(sec) \ | |
8e3de13a | 2211 | ((_arm_elf_section_data *) elf_section_data (sec)) |
e489d0ae | 2212 | |
ba93b8ac DJ |
2213 | /* The size of the thread control block. */ |
2214 | #define TCB_SIZE 8 | |
2215 | ||
0ffa91dd | 2216 | struct elf_arm_obj_tdata |
ba93b8ac DJ |
2217 | { |
2218 | struct elf_obj_tdata root; | |
2219 | ||
2220 | /* tls_type for each local got entry. */ | |
2221 | char *local_got_tls_type; | |
ee065d83 | 2222 | |
bf21ed78 MS |
2223 | /* Zero to warn when linking objects with incompatible enum sizes. */ |
2224 | int no_enum_size_warning; | |
a9dc9481 JM |
2225 | |
2226 | /* Zero to warn when linking objects with incompatible wchar_t sizes. */ | |
2227 | int no_wchar_size_warning; | |
ba93b8ac DJ |
2228 | }; |
2229 | ||
0ffa91dd NC |
2230 | #define elf_arm_tdata(bfd) \ |
2231 | ((struct elf_arm_obj_tdata *) (bfd)->tdata.any) | |
ba93b8ac | 2232 | |
0ffa91dd NC |
2233 | #define elf32_arm_local_got_tls_type(bfd) \ |
2234 | (elf_arm_tdata (bfd)->local_got_tls_type) | |
2235 | ||
2236 | #define is_arm_elf(bfd) \ | |
2237 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
2238 | && elf_tdata (bfd) != NULL \ | |
2239 | && elf_object_id (bfd) == ARM_ELF_TDATA) | |
ba93b8ac DJ |
2240 | |
2241 | static bfd_boolean | |
2242 | elf32_arm_mkobject (bfd *abfd) | |
2243 | { | |
0ffa91dd NC |
2244 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_arm_obj_tdata), |
2245 | ARM_ELF_TDATA); | |
ba93b8ac DJ |
2246 | } |
2247 | ||
252b5132 RH |
2248 | /* The ARM linker needs to keep track of the number of relocs that it |
2249 | decides to copy in check_relocs for each symbol. This is so that | |
2250 | it can discard PC relative relocs if it doesn't need them when | |
2251 | linking with -Bsymbolic. We store the information in a field | |
2252 | extending the regular ELF linker hash table. */ | |
2253 | ||
ba93b8ac DJ |
2254 | /* This structure keeps track of the number of relocs we have copied |
2255 | for a given symbol. */ | |
5e681ec4 | 2256 | struct elf32_arm_relocs_copied |
917583ad NC |
2257 | { |
2258 | /* Next section. */ | |
5e681ec4 | 2259 | struct elf32_arm_relocs_copied * next; |
917583ad NC |
2260 | /* A section in dynobj. */ |
2261 | asection * section; | |
2262 | /* Number of relocs copied in this section. */ | |
2263 | bfd_size_type count; | |
ba93b8ac DJ |
2264 | /* Number of PC-relative relocs copied in this section. */ |
2265 | bfd_size_type pc_count; | |
917583ad | 2266 | }; |
252b5132 | 2267 | |
ba93b8ac DJ |
2268 | #define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent)) |
2269 | ||
ba96a88f | 2270 | /* Arm ELF linker hash entry. */ |
252b5132 | 2271 | struct elf32_arm_link_hash_entry |
917583ad NC |
2272 | { |
2273 | struct elf_link_hash_entry root; | |
252b5132 | 2274 | |
917583ad | 2275 | /* Number of PC relative relocs copied for this symbol. */ |
5e681ec4 | 2276 | struct elf32_arm_relocs_copied * relocs_copied; |
b7693d02 DJ |
2277 | |
2278 | /* We reference count Thumb references to a PLT entry separately, | |
2279 | so that we can emit the Thumb trampoline only if needed. */ | |
2280 | bfd_signed_vma plt_thumb_refcount; | |
2281 | ||
bd97cb95 DJ |
2282 | /* Some references from Thumb code may be eliminated by BL->BLX |
2283 | conversion, so record them separately. */ | |
2284 | bfd_signed_vma plt_maybe_thumb_refcount; | |
2285 | ||
b7693d02 DJ |
2286 | /* Since PLT entries have variable size if the Thumb prologue is |
2287 | used, we need to record the index into .got.plt instead of | |
2288 | recomputing it from the PLT offset. */ | |
2289 | bfd_signed_vma plt_got_offset; | |
ba93b8ac DJ |
2290 | |
2291 | #define GOT_UNKNOWN 0 | |
2292 | #define GOT_NORMAL 1 | |
2293 | #define GOT_TLS_GD 2 | |
2294 | #define GOT_TLS_IE 4 | |
2295 | unsigned char tls_type; | |
a4fd1a8e PB |
2296 | |
2297 | /* The symbol marking the real symbol location for exported thumb | |
2298 | symbols with Arm stubs. */ | |
2299 | struct elf_link_hash_entry *export_glue; | |
906e58ca | 2300 | |
da5938a2 | 2301 | /* A pointer to the most recently used stub hash entry against this |
8029a119 | 2302 | symbol. */ |
da5938a2 | 2303 | struct elf32_arm_stub_hash_entry *stub_cache; |
917583ad | 2304 | }; |
252b5132 | 2305 | |
252b5132 | 2306 | /* Traverse an arm ELF linker hash table. */ |
252b5132 RH |
2307 | #define elf32_arm_link_hash_traverse(table, func, info) \ |
2308 | (elf_link_hash_traverse \ | |
2309 | (&(table)->root, \ | |
b7693d02 | 2310 | (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
252b5132 RH |
2311 | (info))) |
2312 | ||
2313 | /* Get the ARM elf linker hash table from a link_info structure. */ | |
2314 | #define elf32_arm_hash_table(info) \ | |
2315 | ((struct elf32_arm_link_hash_table *) ((info)->hash)) | |
2316 | ||
906e58ca NC |
2317 | #define arm_stub_hash_lookup(table, string, create, copy) \ |
2318 | ((struct elf32_arm_stub_hash_entry *) \ | |
2319 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
2320 | ||
9b485d32 | 2321 | /* ARM ELF linker hash table. */ |
252b5132 | 2322 | struct elf32_arm_link_hash_table |
906e58ca NC |
2323 | { |
2324 | /* The main hash table. */ | |
2325 | struct elf_link_hash_table root; | |
252b5132 | 2326 | |
906e58ca NC |
2327 | /* The size in bytes of the section containing the Thumb-to-ARM glue. */ |
2328 | bfd_size_type thumb_glue_size; | |
252b5132 | 2329 | |
906e58ca NC |
2330 | /* The size in bytes of the section containing the ARM-to-Thumb glue. */ |
2331 | bfd_size_type arm_glue_size; | |
252b5132 | 2332 | |
906e58ca NC |
2333 | /* The size in bytes of section containing the ARMv4 BX veneers. */ |
2334 | bfd_size_type bx_glue_size; | |
845b51d6 | 2335 | |
906e58ca NC |
2336 | /* Offsets of ARMv4 BX veneers. Bit1 set if present, and Bit0 set when |
2337 | veneer has been populated. */ | |
2338 | bfd_vma bx_glue_offset[15]; | |
845b51d6 | 2339 | |
906e58ca NC |
2340 | /* The size in bytes of the section containing glue for VFP11 erratum |
2341 | veneers. */ | |
2342 | bfd_size_type vfp11_erratum_glue_size; | |
c7b8f16e | 2343 | |
906e58ca NC |
2344 | /* An arbitrary input BFD chosen to hold the glue sections. */ |
2345 | bfd * bfd_of_glue_owner; | |
ba96a88f | 2346 | |
906e58ca NC |
2347 | /* Nonzero to output a BE8 image. */ |
2348 | int byteswap_code; | |
e489d0ae | 2349 | |
906e58ca NC |
2350 | /* Zero if R_ARM_TARGET1 means R_ARM_ABS32. |
2351 | Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */ | |
2352 | int target1_is_rel; | |
9c504268 | 2353 | |
906e58ca NC |
2354 | /* The relocation to use for R_ARM_TARGET2 relocations. */ |
2355 | int target2_reloc; | |
eb043451 | 2356 | |
906e58ca NC |
2357 | /* 0 = Ignore R_ARM_V4BX. |
2358 | 1 = Convert BX to MOV PC. | |
2359 | 2 = Generate v4 interworing stubs. */ | |
2360 | int fix_v4bx; | |
319850b4 | 2361 | |
906e58ca NC |
2362 | /* Nonzero if the ARM/Thumb BLX instructions are available for use. */ |
2363 | int use_blx; | |
33bfe774 | 2364 | |
906e58ca NC |
2365 | /* What sort of code sequences we should look for which may trigger the |
2366 | VFP11 denorm erratum. */ | |
2367 | bfd_arm_vfp11_fix vfp11_fix; | |
c7b8f16e | 2368 | |
906e58ca NC |
2369 | /* Global counter for the number of fixes we have emitted. */ |
2370 | int num_vfp11_fixes; | |
c7b8f16e | 2371 | |
906e58ca NC |
2372 | /* Nonzero to force PIC branch veneers. */ |
2373 | int pic_veneer; | |
27e55c4d | 2374 | |
906e58ca NC |
2375 | /* The number of bytes in the initial entry in the PLT. */ |
2376 | bfd_size_type plt_header_size; | |
e5a52504 | 2377 | |
906e58ca NC |
2378 | /* The number of bytes in the subsequent PLT etries. */ |
2379 | bfd_size_type plt_entry_size; | |
e5a52504 | 2380 | |
906e58ca NC |
2381 | /* True if the target system is VxWorks. */ |
2382 | int vxworks_p; | |
00a97672 | 2383 | |
906e58ca NC |
2384 | /* True if the target system is Symbian OS. */ |
2385 | int symbian_p; | |
e5a52504 | 2386 | |
906e58ca NC |
2387 | /* True if the target uses REL relocations. */ |
2388 | int use_rel; | |
4e7fd91e | 2389 | |
906e58ca NC |
2390 | /* Short-cuts to get to dynamic linker sections. */ |
2391 | asection *sgot; | |
2392 | asection *sgotplt; | |
2393 | asection *srelgot; | |
2394 | asection *splt; | |
2395 | asection *srelplt; | |
2396 | asection *sdynbss; | |
2397 | asection *srelbss; | |
5e681ec4 | 2398 | |
906e58ca NC |
2399 | /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */ |
2400 | asection *srelplt2; | |
00a97672 | 2401 | |
906e58ca NC |
2402 | /* Data for R_ARM_TLS_LDM32 relocations. */ |
2403 | union | |
2404 | { | |
2405 | bfd_signed_vma refcount; | |
2406 | bfd_vma offset; | |
2407 | } tls_ldm_got; | |
b7693d02 | 2408 | |
906e58ca NC |
2409 | /* Small local sym to section mapping cache. */ |
2410 | struct sym_sec_cache sym_sec; | |
2411 | ||
2412 | /* For convenience in allocate_dynrelocs. */ | |
2413 | bfd * obfd; | |
2414 | ||
2415 | /* The stub hash table. */ | |
2416 | struct bfd_hash_table stub_hash_table; | |
2417 | ||
2418 | /* Linker stub bfd. */ | |
2419 | bfd *stub_bfd; | |
2420 | ||
2421 | /* Linker call-backs. */ | |
2422 | asection * (*add_stub_section) (const char *, asection *); | |
2423 | void (*layout_sections_again) (void); | |
2424 | ||
2425 | /* Array to keep track of which stub sections have been created, and | |
2426 | information on stub grouping. */ | |
2427 | struct map_stub | |
2428 | { | |
2429 | /* This is the section to which stubs in the group will be | |
2430 | attached. */ | |
2431 | asection *link_sec; | |
2432 | /* The stub section. */ | |
2433 | asection *stub_sec; | |
2434 | } *stub_group; | |
2435 | ||
2436 | /* Assorted information used by elf32_arm_size_stubs. */ | |
2437 | unsigned int bfd_count; | |
2438 | int top_index; | |
2439 | asection **input_list; | |
2440 | }; | |
252b5132 | 2441 | |
780a67af NC |
2442 | /* Create an entry in an ARM ELF linker hash table. */ |
2443 | ||
2444 | static struct bfd_hash_entry * | |
57e8b36a NC |
2445 | elf32_arm_link_hash_newfunc (struct bfd_hash_entry * entry, |
2446 | struct bfd_hash_table * table, | |
2447 | const char * string) | |
780a67af NC |
2448 | { |
2449 | struct elf32_arm_link_hash_entry * ret = | |
2450 | (struct elf32_arm_link_hash_entry *) entry; | |
2451 | ||
2452 | /* Allocate the structure if it has not already been allocated by a | |
2453 | subclass. */ | |
906e58ca | 2454 | if (ret == NULL) |
57e8b36a NC |
2455 | ret = bfd_hash_allocate (table, sizeof (struct elf32_arm_link_hash_entry)); |
2456 | if (ret == NULL) | |
780a67af NC |
2457 | return (struct bfd_hash_entry *) ret; |
2458 | ||
2459 | /* Call the allocation method of the superclass. */ | |
2460 | ret = ((struct elf32_arm_link_hash_entry *) | |
2461 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
2462 | table, string)); | |
57e8b36a | 2463 | if (ret != NULL) |
b7693d02 DJ |
2464 | { |
2465 | ret->relocs_copied = NULL; | |
ba93b8ac | 2466 | ret->tls_type = GOT_UNKNOWN; |
b7693d02 | 2467 | ret->plt_thumb_refcount = 0; |
bd97cb95 | 2468 | ret->plt_maybe_thumb_refcount = 0; |
b7693d02 | 2469 | ret->plt_got_offset = -1; |
a4fd1a8e | 2470 | ret->export_glue = NULL; |
906e58ca NC |
2471 | |
2472 | ret->stub_cache = NULL; | |
b7693d02 | 2473 | } |
780a67af NC |
2474 | |
2475 | return (struct bfd_hash_entry *) ret; | |
2476 | } | |
2477 | ||
906e58ca NC |
2478 | /* Initialize an entry in the stub hash table. */ |
2479 | ||
2480 | static struct bfd_hash_entry * | |
2481 | stub_hash_newfunc (struct bfd_hash_entry *entry, | |
2482 | struct bfd_hash_table *table, | |
2483 | const char *string) | |
2484 | { | |
2485 | /* Allocate the structure if it has not already been allocated by a | |
2486 | subclass. */ | |
2487 | if (entry == NULL) | |
2488 | { | |
2489 | entry = bfd_hash_allocate (table, | |
2490 | sizeof (struct elf32_arm_stub_hash_entry)); | |
2491 | if (entry == NULL) | |
2492 | return entry; | |
2493 | } | |
2494 | ||
2495 | /* Call the allocation method of the superclass. */ | |
2496 | entry = bfd_hash_newfunc (entry, table, string); | |
2497 | if (entry != NULL) | |
2498 | { | |
2499 | struct elf32_arm_stub_hash_entry *eh; | |
2500 | ||
2501 | /* Initialize the local fields. */ | |
2502 | eh = (struct elf32_arm_stub_hash_entry *) entry; | |
2503 | eh->stub_sec = NULL; | |
2504 | eh->stub_offset = 0; | |
2505 | eh->target_value = 0; | |
2506 | eh->target_section = NULL; | |
2507 | eh->stub_type = arm_stub_none; | |
461a49ca DJ |
2508 | eh->stub_size = 0; |
2509 | eh->stub_template = NULL; | |
2510 | eh->stub_template_size = 0; | |
906e58ca NC |
2511 | eh->h = NULL; |
2512 | eh->id_sec = NULL; | |
2513 | } | |
2514 | ||
2515 | return entry; | |
2516 | } | |
2517 | ||
00a97672 | 2518 | /* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up |
5e681ec4 PB |
2519 | shortcuts to them in our hash table. */ |
2520 | ||
2521 | static bfd_boolean | |
57e8b36a | 2522 | create_got_section (bfd *dynobj, struct bfd_link_info *info) |
5e681ec4 PB |
2523 | { |
2524 | struct elf32_arm_link_hash_table *htab; | |
2525 | ||
e5a52504 MM |
2526 | htab = elf32_arm_hash_table (info); |
2527 | /* BPABI objects never have a GOT, or associated sections. */ | |
2528 | if (htab->symbian_p) | |
2529 | return TRUE; | |
2530 | ||
5e681ec4 PB |
2531 | if (! _bfd_elf_create_got_section (dynobj, info)) |
2532 | return FALSE; | |
2533 | ||
5e681ec4 PB |
2534 | htab->sgot = bfd_get_section_by_name (dynobj, ".got"); |
2535 | htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
2536 | if (!htab->sgot || !htab->sgotplt) | |
2537 | abort (); | |
2538 | ||
00a97672 RS |
2539 | htab->srelgot = bfd_make_section_with_flags (dynobj, |
2540 | RELOC_SECTION (htab, ".got"), | |
3496cb2a L |
2541 | (SEC_ALLOC | SEC_LOAD |
2542 | | SEC_HAS_CONTENTS | |
2543 | | SEC_IN_MEMORY | |
2544 | | SEC_LINKER_CREATED | |
2545 | | SEC_READONLY)); | |
5e681ec4 | 2546 | if (htab->srelgot == NULL |
5e681ec4 PB |
2547 | || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2)) |
2548 | return FALSE; | |
2549 | return TRUE; | |
2550 | } | |
2551 | ||
00a97672 RS |
2552 | /* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and |
2553 | .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our | |
5e681ec4 PB |
2554 | hash table. */ |
2555 | ||
2556 | static bfd_boolean | |
57e8b36a | 2557 | elf32_arm_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5e681ec4 PB |
2558 | { |
2559 | struct elf32_arm_link_hash_table *htab; | |
2560 | ||
2561 | htab = elf32_arm_hash_table (info); | |
2562 | if (!htab->sgot && !create_got_section (dynobj, info)) | |
2563 | return FALSE; | |
2564 | ||
2565 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
2566 | return FALSE; | |
2567 | ||
2568 | htab->splt = bfd_get_section_by_name (dynobj, ".plt"); | |
00a97672 RS |
2569 | htab->srelplt = bfd_get_section_by_name (dynobj, |
2570 | RELOC_SECTION (htab, ".plt")); | |
5e681ec4 PB |
2571 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); |
2572 | if (!info->shared) | |
00a97672 RS |
2573 | htab->srelbss = bfd_get_section_by_name (dynobj, |
2574 | RELOC_SECTION (htab, ".bss")); | |
2575 | ||
2576 | if (htab->vxworks_p) | |
2577 | { | |
2578 | if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2)) | |
2579 | return FALSE; | |
2580 | ||
2581 | if (info->shared) | |
2582 | { | |
2583 | htab->plt_header_size = 0; | |
2584 | htab->plt_entry_size | |
2585 | = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry); | |
2586 | } | |
2587 | else | |
2588 | { | |
2589 | htab->plt_header_size | |
2590 | = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry); | |
2591 | htab->plt_entry_size | |
2592 | = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry); | |
2593 | } | |
2594 | } | |
5e681ec4 | 2595 | |
906e58ca | 2596 | if (!htab->splt |
e5a52504 MM |
2597 | || !htab->srelplt |
2598 | || !htab->sdynbss | |
5e681ec4 PB |
2599 | || (!info->shared && !htab->srelbss)) |
2600 | abort (); | |
2601 | ||
2602 | return TRUE; | |
2603 | } | |
2604 | ||
906e58ca NC |
2605 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
2606 | ||
2607 | static void | |
2608 | elf32_arm_copy_indirect_symbol (struct bfd_link_info *info, | |
2609 | struct elf_link_hash_entry *dir, | |
2610 | struct elf_link_hash_entry *ind) | |
2611 | { | |
2612 | struct elf32_arm_link_hash_entry *edir, *eind; | |
2613 | ||
2614 | edir = (struct elf32_arm_link_hash_entry *) dir; | |
2615 | eind = (struct elf32_arm_link_hash_entry *) ind; | |
2616 | ||
2617 | if (eind->relocs_copied != NULL) | |
2618 | { | |
2619 | if (edir->relocs_copied != NULL) | |
2620 | { | |
2621 | struct elf32_arm_relocs_copied **pp; | |
2622 | struct elf32_arm_relocs_copied *p; | |
2623 | ||
2624 | /* Add reloc counts against the indirect sym to the direct sym | |
2625 | list. Merge any entries against the same section. */ | |
2626 | for (pp = &eind->relocs_copied; (p = *pp) != NULL; ) | |
2627 | { | |
2628 | struct elf32_arm_relocs_copied *q; | |
2629 | ||
2630 | for (q = edir->relocs_copied; q != NULL; q = q->next) | |
2631 | if (q->section == p->section) | |
2632 | { | |
2633 | q->pc_count += p->pc_count; | |
2634 | q->count += p->count; | |
2635 | *pp = p->next; | |
2636 | break; | |
2637 | } | |
2638 | if (q == NULL) | |
2639 | pp = &p->next; | |
2640 | } | |
2641 | *pp = edir->relocs_copied; | |
2642 | } | |
2643 | ||
2644 | edir->relocs_copied = eind->relocs_copied; | |
2645 | eind->relocs_copied = NULL; | |
2646 | } | |
2647 | ||
2648 | if (ind->root.type == bfd_link_hash_indirect) | |
2649 | { | |
2650 | /* Copy over PLT info. */ | |
2651 | edir->plt_thumb_refcount += eind->plt_thumb_refcount; | |
2652 | eind->plt_thumb_refcount = 0; | |
2653 | edir->plt_maybe_thumb_refcount += eind->plt_maybe_thumb_refcount; | |
2654 | eind->plt_maybe_thumb_refcount = 0; | |
2655 | ||
2656 | if (dir->got.refcount <= 0) | |
2657 | { | |
2658 | edir->tls_type = eind->tls_type; | |
2659 | eind->tls_type = GOT_UNKNOWN; | |
2660 | } | |
2661 | } | |
2662 | ||
2663 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
2664 | } | |
2665 | ||
2666 | /* Create an ARM elf linker hash table. */ | |
2667 | ||
2668 | static struct bfd_link_hash_table * | |
2669 | elf32_arm_link_hash_table_create (bfd *abfd) | |
2670 | { | |
2671 | struct elf32_arm_link_hash_table *ret; | |
2672 | bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table); | |
2673 | ||
2674 | ret = bfd_malloc (amt); | |
2675 | if (ret == NULL) | |
2676 | return NULL; | |
2677 | ||
2678 | if (!_bfd_elf_link_hash_table_init (& ret->root, abfd, | |
2679 | elf32_arm_link_hash_newfunc, | |
2680 | sizeof (struct elf32_arm_link_hash_entry))) | |
2681 | { | |
2682 | free (ret); | |
2683 | return NULL; | |
2684 | } | |
2685 | ||
2686 | ret->sgot = NULL; | |
2687 | ret->sgotplt = NULL; | |
2688 | ret->srelgot = NULL; | |
2689 | ret->splt = NULL; | |
2690 | ret->srelplt = NULL; | |
2691 | ret->sdynbss = NULL; | |
2692 | ret->srelbss = NULL; | |
2693 | ret->srelplt2 = NULL; | |
2694 | ret->thumb_glue_size = 0; | |
2695 | ret->arm_glue_size = 0; | |
2696 | ret->bx_glue_size = 0; | |
2697 | memset (ret->bx_glue_offset, 0, sizeof (ret->bx_glue_offset)); | |
2698 | ret->vfp11_fix = BFD_ARM_VFP11_FIX_NONE; | |
2699 | ret->vfp11_erratum_glue_size = 0; | |
2700 | ret->num_vfp11_fixes = 0; | |
2701 | ret->bfd_of_glue_owner = NULL; | |
2702 | ret->byteswap_code = 0; | |
2703 | ret->target1_is_rel = 0; | |
2704 | ret->target2_reloc = R_ARM_NONE; | |
2705 | #ifdef FOUR_WORD_PLT | |
2706 | ret->plt_header_size = 16; | |
2707 | ret->plt_entry_size = 16; | |
2708 | #else | |
2709 | ret->plt_header_size = 20; | |
2710 | ret->plt_entry_size = 12; | |
2711 | #endif | |
2712 | ret->fix_v4bx = 0; | |
2713 | ret->use_blx = 0; | |
2714 | ret->vxworks_p = 0; | |
2715 | ret->symbian_p = 0; | |
2716 | ret->use_rel = 1; | |
2717 | ret->sym_sec.abfd = NULL; | |
2718 | ret->obfd = abfd; | |
2719 | ret->tls_ldm_got.refcount = 0; | |
6cee0a6f L |
2720 | ret->stub_bfd = NULL; |
2721 | ret->add_stub_section = NULL; | |
2722 | ret->layout_sections_again = NULL; | |
2723 | ret->stub_group = NULL; | |
2724 | ret->bfd_count = 0; | |
2725 | ret->top_index = 0; | |
2726 | ret->input_list = NULL; | |
906e58ca NC |
2727 | |
2728 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc, | |
2729 | sizeof (struct elf32_arm_stub_hash_entry))) | |
2730 | { | |
2731 | free (ret); | |
2732 | return NULL; | |
2733 | } | |
2734 | ||
2735 | return &ret->root.root; | |
2736 | } | |
2737 | ||
2738 | /* Free the derived linker hash table. */ | |
2739 | ||
2740 | static void | |
2741 | elf32_arm_hash_table_free (struct bfd_link_hash_table *hash) | |
2742 | { | |
2743 | struct elf32_arm_link_hash_table *ret | |
2744 | = (struct elf32_arm_link_hash_table *) hash; | |
2745 | ||
2746 | bfd_hash_table_free (&ret->stub_hash_table); | |
2747 | _bfd_generic_link_hash_table_free (hash); | |
2748 | } | |
2749 | ||
2750 | /* Determine if we're dealing with a Thumb only architecture. */ | |
2751 | ||
2752 | static bfd_boolean | |
2753 | using_thumb_only (struct elf32_arm_link_hash_table *globals) | |
2754 | { | |
2755 | int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, | |
2756 | Tag_CPU_arch); | |
2757 | int profile; | |
2758 | ||
2759 | if (arch != TAG_CPU_ARCH_V7) | |
2760 | return FALSE; | |
2761 | ||
2762 | profile = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, | |
2763 | Tag_CPU_arch_profile); | |
2764 | ||
2765 | return profile == 'M'; | |
2766 | } | |
2767 | ||
2768 | /* Determine if we're dealing with a Thumb-2 object. */ | |
2769 | ||
2770 | static bfd_boolean | |
2771 | using_thumb2 (struct elf32_arm_link_hash_table *globals) | |
2772 | { | |
2773 | int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, | |
2774 | Tag_CPU_arch); | |
2775 | return arch == TAG_CPU_ARCH_V6T2 || arch >= TAG_CPU_ARCH_V7; | |
2776 | } | |
2777 | ||
f4ac8484 DJ |
2778 | static bfd_boolean |
2779 | arm_stub_is_thumb (enum elf32_arm_stub_type stub_type) | |
2780 | { | |
2781 | switch (stub_type) | |
2782 | { | |
fea2b4d6 CL |
2783 | case arm_stub_long_branch_thumb_only: |
2784 | case arm_stub_long_branch_v4t_thumb_arm: | |
2785 | case arm_stub_short_branch_v4t_thumb_arm: | |
f4ac8484 DJ |
2786 | return TRUE; |
2787 | case arm_stub_none: | |
2788 | BFD_FAIL (); | |
2789 | return FALSE; | |
2790 | break; | |
2791 | default: | |
2792 | return FALSE; | |
2793 | } | |
2794 | } | |
2795 | ||
906e58ca NC |
2796 | /* Determine the type of stub needed, if any, for a call. */ |
2797 | ||
2798 | static enum elf32_arm_stub_type | |
2799 | arm_type_of_stub (struct bfd_link_info *info, | |
2800 | asection *input_sec, | |
2801 | const Elf_Internal_Rela *rel, | |
2802 | unsigned char st_type, | |
2803 | struct elf32_arm_link_hash_entry *hash, | |
c820be07 NC |
2804 | bfd_vma destination, |
2805 | asection *sym_sec, | |
2806 | bfd *input_bfd, | |
2807 | const char *name) | |
906e58ca NC |
2808 | { |
2809 | bfd_vma location; | |
2810 | bfd_signed_vma branch_offset; | |
2811 | unsigned int r_type; | |
2812 | struct elf32_arm_link_hash_table * globals; | |
2813 | int thumb2; | |
2814 | int thumb_only; | |
2815 | enum elf32_arm_stub_type stub_type = arm_stub_none; | |
2816 | ||
da5938a2 | 2817 | /* We don't know the actual type of destination in case it is of |
8029a119 | 2818 | type STT_SECTION: give up. */ |
da5938a2 NC |
2819 | if (st_type == STT_SECTION) |
2820 | return stub_type; | |
2821 | ||
906e58ca NC |
2822 | globals = elf32_arm_hash_table (info); |
2823 | ||
2824 | thumb_only = using_thumb_only (globals); | |
2825 | ||
2826 | thumb2 = using_thumb2 (globals); | |
2827 | ||
2828 | /* Determine where the call point is. */ | |
2829 | location = (input_sec->output_offset | |
2830 | + input_sec->output_section->vma | |
2831 | + rel->r_offset); | |
2832 | ||
2833 | branch_offset = (bfd_signed_vma)(destination - location); | |
2834 | ||
2835 | r_type = ELF32_R_TYPE (rel->r_info); | |
2836 | ||
2837 | /* If the call will go through a PLT entry then we do not need | |
2838 | glue. */ | |
329dcd78 | 2839 | if (globals->splt != NULL && hash != NULL && hash->root.plt.offset != (bfd_vma) -1) |
906e58ca NC |
2840 | return stub_type; |
2841 | ||
2842 | if (r_type == R_ARM_THM_CALL) | |
2843 | { | |
2844 | if ((!thumb2 | |
2845 | && (branch_offset > THM_MAX_FWD_BRANCH_OFFSET | |
2846 | || (branch_offset < THM_MAX_BWD_BRANCH_OFFSET))) | |
2847 | || (thumb2 | |
2848 | && (branch_offset > THM2_MAX_FWD_BRANCH_OFFSET | |
2849 | || (branch_offset < THM2_MAX_BWD_BRANCH_OFFSET))) | |
2850 | || ((st_type != STT_ARM_TFUNC) && !globals->use_blx)) | |
2851 | { | |
2852 | if (st_type == STT_ARM_TFUNC) | |
2853 | { | |
2854 | /* Thumb to thumb. */ | |
2855 | if (!thumb_only) | |
2856 | { | |
2857 | stub_type = (info->shared | globals->pic_veneer) | |
c2b4a39d | 2858 | /* PIC stubs. */ |
906e58ca | 2859 | ? ((globals->use_blx) |
c2b4a39d | 2860 | /* V5T and above. */ |
fea2b4d6 | 2861 | ? arm_stub_long_branch_any_any_pic |
c2b4a39d | 2862 | /* not yet supported on V4T. */ |
906e58ca | 2863 | : arm_stub_none) |
c2b4a39d CL |
2864 | |
2865 | /* non-PIC stubs. */ | |
2866 | : ((globals->use_blx) | |
2867 | /* V5T and above. */ | |
2868 | ? arm_stub_long_branch_any_any | |
2869 | /* V4T. */ | |
2870 | : arm_stub_long_branch_thumb_only); | |
906e58ca NC |
2871 | } |
2872 | else | |
2873 | { | |
2874 | stub_type = (info->shared | globals->pic_veneer) | |
c2b4a39d | 2875 | /* PIC stub not yet supported on V4T. */ |
906e58ca | 2876 | ? arm_stub_none |
c2b4a39d CL |
2877 | /* non-PIC stub. */ |
2878 | : arm_stub_long_branch_thumb_only; | |
906e58ca NC |
2879 | } |
2880 | } | |
2881 | else | |
2882 | { | |
2883 | /* Thumb to arm. */ | |
c820be07 NC |
2884 | if (sym_sec != NULL |
2885 | && sym_sec->owner != NULL | |
2886 | && !INTERWORK_FLAG (sym_sec->owner)) | |
2887 | { | |
2888 | (*_bfd_error_handler) | |
2889 | (_("%B(%s): warning: interworking not enabled.\n" | |
2890 | " first occurrence: %B: Thumb call to ARM"), | |
2891 | sym_sec->owner, input_bfd, name); | |
2892 | } | |
2893 | ||
906e58ca | 2894 | stub_type = (info->shared | globals->pic_veneer) |
c2b4a39d | 2895 | /* PIC stubs. */ |
906e58ca | 2896 | ? ((globals->use_blx) |
c2b4a39d | 2897 | /* V5T and above. */ |
fea2b4d6 | 2898 | ? arm_stub_long_branch_any_any_pic |
c2b4a39d | 2899 | /* not yet supported on V4T. */ |
906e58ca | 2900 | : arm_stub_none) |
c2b4a39d CL |
2901 | |
2902 | /* non-PIC stubs. */ | |
2903 | : ((globals->use_blx) | |
2904 | /* V5T and above. */ | |
2905 | ? arm_stub_long_branch_any_any | |
2906 | /* V4T. */ | |
2907 | : arm_stub_long_branch_v4t_thumb_arm); | |
c820be07 NC |
2908 | |
2909 | /* Handle v4t short branches. */ | |
fea2b4d6 | 2910 | if ((stub_type == arm_stub_long_branch_v4t_thumb_arm) |
c820be07 NC |
2911 | && (branch_offset <= THM_MAX_FWD_BRANCH_OFFSET) |
2912 | && (branch_offset >= THM_MAX_BWD_BRANCH_OFFSET)) | |
fea2b4d6 | 2913 | stub_type = arm_stub_short_branch_v4t_thumb_arm; |
906e58ca NC |
2914 | } |
2915 | } | |
2916 | } | |
2917 | else if (r_type == R_ARM_CALL) | |
2918 | { | |
2919 | if (st_type == STT_ARM_TFUNC) | |
2920 | { | |
2921 | /* Arm to thumb. */ | |
c820be07 NC |
2922 | |
2923 | if (sym_sec != NULL | |
2924 | && sym_sec->owner != NULL | |
2925 | && !INTERWORK_FLAG (sym_sec->owner)) | |
2926 | { | |
2927 | (*_bfd_error_handler) | |
2928 | (_("%B(%s): warning: interworking not enabled.\n" | |
c2b4a39d | 2929 | " first occurrence: %B: ARM call to Thumb"), |
c820be07 NC |
2930 | sym_sec->owner, input_bfd, name); |
2931 | } | |
2932 | ||
2933 | /* We have an extra 2-bytes reach because of | |
2934 | the mode change (bit 24 (H) of BLX encoding). */ | |
906e58ca NC |
2935 | if (branch_offset > (ARM_MAX_FWD_BRANCH_OFFSET + 2) |
2936 | || (branch_offset < ARM_MAX_BWD_BRANCH_OFFSET) | |
2937 | || !globals->use_blx) | |
2938 | { | |
2939 | stub_type = (info->shared | globals->pic_veneer) | |
c2b4a39d | 2940 | /* PIC stubs. */ |
fea2b4d6 | 2941 | ? arm_stub_long_branch_any_any_pic |
c2b4a39d CL |
2942 | /* non-PIC stubs. */ |
2943 | : ((globals->use_blx) | |
2944 | /* V5T and above. */ | |
2945 | ? arm_stub_long_branch_any_any | |
2946 | /* V4T. */ | |
2947 | : arm_stub_long_branch_v4t_arm_thumb); | |
906e58ca NC |
2948 | } |
2949 | } | |
2950 | else | |
2951 | { | |
2952 | /* Arm to arm. */ | |
2953 | if (branch_offset > ARM_MAX_FWD_BRANCH_OFFSET | |
2954 | || (branch_offset < ARM_MAX_BWD_BRANCH_OFFSET)) | |
2955 | { | |
2956 | stub_type = (info->shared | globals->pic_veneer) | |
c2b4a39d | 2957 | /* PIC stubs. */ |
fea2b4d6 | 2958 | ? arm_stub_long_branch_any_any_pic |
c2b4a39d | 2959 | /* non-PIC stubs. */ |
fea2b4d6 | 2960 | : arm_stub_long_branch_any_any; |
906e58ca NC |
2961 | } |
2962 | } | |
2963 | } | |
2964 | ||
2965 | return stub_type; | |
2966 | } | |
2967 | ||
2968 | /* Build a name for an entry in the stub hash table. */ | |
2969 | ||
2970 | static char * | |
2971 | elf32_arm_stub_name (const asection *input_section, | |
2972 | const asection *sym_sec, | |
2973 | const struct elf32_arm_link_hash_entry *hash, | |
2974 | const Elf_Internal_Rela *rel) | |
2975 | { | |
2976 | char *stub_name; | |
2977 | bfd_size_type len; | |
2978 | ||
2979 | if (hash) | |
2980 | { | |
2981 | len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 8 + 1; | |
2982 | stub_name = bfd_malloc (len); | |
2983 | if (stub_name != NULL) | |
2984 | sprintf (stub_name, "%08x_%s+%x", | |
2985 | input_section->id & 0xffffffff, | |
2986 | hash->root.root.root.string, | |
2987 | (int) rel->r_addend & 0xffffffff); | |
2988 | } | |
2989 | else | |
2990 | { | |
2991 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; | |
2992 | stub_name = bfd_malloc (len); | |
2993 | if (stub_name != NULL) | |
2994 | sprintf (stub_name, "%08x_%x:%x+%x", | |
2995 | input_section->id & 0xffffffff, | |
2996 | sym_sec->id & 0xffffffff, | |
2997 | (int) ELF32_R_SYM (rel->r_info) & 0xffffffff, | |
2998 | (int) rel->r_addend & 0xffffffff); | |
2999 | } | |
3000 | ||
3001 | return stub_name; | |
3002 | } | |
3003 | ||
3004 | /* Look up an entry in the stub hash. Stub entries are cached because | |
3005 | creating the stub name takes a bit of time. */ | |
3006 | ||
3007 | static struct elf32_arm_stub_hash_entry * | |
3008 | elf32_arm_get_stub_entry (const asection *input_section, | |
3009 | const asection *sym_sec, | |
3010 | struct elf_link_hash_entry *hash, | |
3011 | const Elf_Internal_Rela *rel, | |
3012 | struct elf32_arm_link_hash_table *htab) | |
3013 | { | |
3014 | struct elf32_arm_stub_hash_entry *stub_entry; | |
3015 | struct elf32_arm_link_hash_entry *h = (struct elf32_arm_link_hash_entry *) hash; | |
3016 | const asection *id_sec; | |
3017 | ||
3018 | if ((input_section->flags & SEC_CODE) == 0) | |
3019 | return NULL; | |
3020 | ||
3021 | /* If this input section is part of a group of sections sharing one | |
3022 | stub section, then use the id of the first section in the group. | |
3023 | Stub names need to include a section id, as there may well be | |
3024 | more than one stub used to reach say, printf, and we need to | |
3025 | distinguish between them. */ | |
3026 | id_sec = htab->stub_group[input_section->id].link_sec; | |
3027 | ||
3028 | if (h != NULL && h->stub_cache != NULL | |
3029 | && h->stub_cache->h == h | |
3030 | && h->stub_cache->id_sec == id_sec) | |
3031 | { | |
3032 | stub_entry = h->stub_cache; | |
3033 | } | |
3034 | else | |
3035 | { | |
3036 | char *stub_name; | |
3037 | ||
3038 | stub_name = elf32_arm_stub_name (id_sec, sym_sec, h, rel); | |
3039 | if (stub_name == NULL) | |
3040 | return NULL; | |
3041 | ||
3042 | stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, | |
3043 | stub_name, FALSE, FALSE); | |
3044 | if (h != NULL) | |
3045 | h->stub_cache = stub_entry; | |
3046 | ||
3047 | free (stub_name); | |
3048 | } | |
3049 | ||
3050 | return stub_entry; | |
3051 | } | |
3052 | ||
906e58ca NC |
3053 | /* Add a new stub entry to the stub hash. Not all fields of the new |
3054 | stub entry are initialised. */ | |
3055 | ||
3056 | static struct elf32_arm_stub_hash_entry * | |
3057 | elf32_arm_add_stub (const char *stub_name, | |
3058 | asection *section, | |
da5938a2 | 3059 | struct elf32_arm_link_hash_table *htab) |
906e58ca NC |
3060 | { |
3061 | asection *link_sec; | |
3062 | asection *stub_sec; | |
3063 | struct elf32_arm_stub_hash_entry *stub_entry; | |
3064 | ||
3065 | link_sec = htab->stub_group[section->id].link_sec; | |
3066 | stub_sec = htab->stub_group[section->id].stub_sec; | |
3067 | if (stub_sec == NULL) | |
3068 | { | |
3069 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
3070 | if (stub_sec == NULL) | |
3071 | { | |
3072 | size_t namelen; | |
3073 | bfd_size_type len; | |
3074 | char *s_name; | |
3075 | ||
3076 | namelen = strlen (link_sec->name); | |
3077 | len = namelen + sizeof (STUB_SUFFIX); | |
3078 | s_name = bfd_alloc (htab->stub_bfd, len); | |
3079 | if (s_name == NULL) | |
3080 | return NULL; | |
3081 | ||
3082 | memcpy (s_name, link_sec->name, namelen); | |
3083 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
3084 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); | |
3085 | if (stub_sec == NULL) | |
3086 | return NULL; | |
3087 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
3088 | } | |
3089 | htab->stub_group[section->id].stub_sec = stub_sec; | |
3090 | } | |
3091 | ||
3092 | /* Enter this entry into the linker stub hash table. */ | |
3093 | stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
3094 | TRUE, FALSE); | |
3095 | if (stub_entry == NULL) | |
3096 | { | |
3097 | (*_bfd_error_handler) (_("%s: cannot create stub entry %s"), | |
3098 | section->owner, | |
3099 | stub_name); | |
3100 | return NULL; | |
3101 | } | |
3102 | ||
3103 | stub_entry->stub_sec = stub_sec; | |
3104 | stub_entry->stub_offset = 0; | |
3105 | stub_entry->id_sec = link_sec; | |
3106 | ||
906e58ca NC |
3107 | return stub_entry; |
3108 | } | |
3109 | ||
3110 | /* Store an Arm insn into an output section not processed by | |
3111 | elf32_arm_write_section. */ | |
3112 | ||
3113 | static void | |
8029a119 NC |
3114 | put_arm_insn (struct elf32_arm_link_hash_table * htab, |
3115 | bfd * output_bfd, bfd_vma val, void * ptr) | |
906e58ca NC |
3116 | { |
3117 | if (htab->byteswap_code != bfd_little_endian (output_bfd)) | |
3118 | bfd_putl32 (val, ptr); | |
3119 | else | |
3120 | bfd_putb32 (val, ptr); | |
3121 | } | |
3122 | ||
3123 | /* Store a 16-bit Thumb insn into an output section not processed by | |
3124 | elf32_arm_write_section. */ | |
3125 | ||
3126 | static void | |
8029a119 NC |
3127 | put_thumb_insn (struct elf32_arm_link_hash_table * htab, |
3128 | bfd * output_bfd, bfd_vma val, void * ptr) | |
906e58ca NC |
3129 | { |
3130 | if (htab->byteswap_code != bfd_little_endian (output_bfd)) | |
3131 | bfd_putl16 (val, ptr); | |
3132 | else | |
3133 | bfd_putb16 (val, ptr); | |
3134 | } | |
3135 | ||
3136 | static bfd_boolean | |
3137 | arm_build_one_stub (struct bfd_hash_entry *gen_entry, | |
3138 | void * in_arg) | |
3139 | { | |
3140 | struct elf32_arm_stub_hash_entry *stub_entry; | |
3141 | struct bfd_link_info *info; | |
3142 | struct elf32_arm_link_hash_table *htab; | |
3143 | asection *stub_sec; | |
3144 | bfd *stub_bfd; | |
3145 | bfd_vma stub_addr; | |
3146 | bfd_byte *loc; | |
3147 | bfd_vma sym_value; | |
3148 | int template_size; | |
3149 | int size; | |
461a49ca | 3150 | const insn_sequence *template; |
906e58ca NC |
3151 | int i; |
3152 | struct elf32_arm_link_hash_table * globals; | |
461a49ca DJ |
3153 | int stub_reloc_idx = -1; |
3154 | int stub_reloc_offset; | |
906e58ca NC |
3155 | |
3156 | /* Massage our args to the form they really have. */ | |
3157 | stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry; | |
3158 | info = (struct bfd_link_info *) in_arg; | |
3159 | ||
3160 | globals = elf32_arm_hash_table (info); | |
3161 | ||
3162 | htab = elf32_arm_hash_table (info); | |
3163 | stub_sec = stub_entry->stub_sec; | |
3164 | ||
3165 | /* Make a note of the offset within the stubs for this entry. */ | |
3166 | stub_entry->stub_offset = stub_sec->size; | |
3167 | loc = stub_sec->contents + stub_entry->stub_offset; | |
3168 | ||
3169 | stub_bfd = stub_sec->owner; | |
3170 | ||
3171 | /* This is the address of the start of the stub. */ | |
3172 | stub_addr = stub_sec->output_section->vma + stub_sec->output_offset | |
3173 | + stub_entry->stub_offset; | |
3174 | ||
3175 | /* This is the address of the stub destination. */ | |
3176 | sym_value = (stub_entry->target_value | |
3177 | + stub_entry->target_section->output_offset | |
3178 | + stub_entry->target_section->output_section->vma); | |
3179 | ||
461a49ca DJ |
3180 | template = stub_entry->stub_template; |
3181 | template_size = stub_entry->stub_template_size; | |
906e58ca NC |
3182 | |
3183 | size = 0; | |
461a49ca | 3184 | for (i = 0; i < template_size; i++) |
906e58ca | 3185 | { |
461a49ca DJ |
3186 | switch(template[i].type) |
3187 | { | |
3188 | case THUMB16_TYPE: | |
3189 | put_thumb_insn (globals, stub_bfd, template[i].data, loc + size); | |
3190 | size += 2; | |
3191 | break; | |
906e58ca | 3192 | |
461a49ca DJ |
3193 | case ARM_TYPE: |
3194 | put_arm_insn (globals, stub_bfd, template[i].data, loc + size); | |
3195 | /* Handle cases where the target is encoded within the | |
3196 | instruction. */ | |
3197 | if (template[i].reloc_type == R_ARM_JUMP24) | |
3198 | { | |
3199 | stub_reloc_idx = i; | |
3200 | stub_reloc_offset = size; | |
3201 | } | |
3202 | size += 4; | |
3203 | break; | |
3204 | ||
3205 | case DATA_TYPE: | |
3206 | bfd_put_32 (stub_bfd, template[i].data, loc + size); | |
3207 | stub_reloc_idx = i; | |
3208 | stub_reloc_offset = size; | |
3209 | size += 4; | |
3210 | break; | |
3211 | ||
3212 | default: | |
3213 | BFD_FAIL (); | |
3214 | return FALSE; | |
3215 | } | |
906e58ca | 3216 | } |
461a49ca | 3217 | |
906e58ca NC |
3218 | stub_sec->size += size; |
3219 | ||
461a49ca DJ |
3220 | /* Stub size has already been computed in arm_size_one_stub. Check |
3221 | consistency. */ | |
3222 | BFD_ASSERT (size == stub_entry->stub_size); | |
3223 | ||
906e58ca NC |
3224 | /* Destination is Thumb. Force bit 0 to 1 to reflect this. */ |
3225 | if (stub_entry->st_type == STT_ARM_TFUNC) | |
3226 | sym_value |= 1; | |
3227 | ||
461a49ca DJ |
3228 | /* Assume there is one and only one entry to relocate in each stub. */ |
3229 | BFD_ASSERT (stub_reloc_idx != -1); | |
c820be07 | 3230 | |
461a49ca DJ |
3231 | _bfd_final_link_relocate (elf32_arm_howto_from_type (template[stub_reloc_idx].reloc_type), |
3232 | stub_bfd, stub_sec, stub_sec->contents, | |
3233 | stub_entry->stub_offset + stub_reloc_offset, | |
3234 | sym_value, template[stub_reloc_idx].reloc_addend); | |
906e58ca NC |
3235 | |
3236 | return TRUE; | |
3237 | } | |
3238 | ||
3239 | /* As above, but don't actually build the stub. Just bump offset so | |
3240 | we know stub section sizes. */ | |
3241 | ||
3242 | static bfd_boolean | |
3243 | arm_size_one_stub (struct bfd_hash_entry *gen_entry, | |
3244 | void * in_arg) | |
3245 | { | |
3246 | struct elf32_arm_stub_hash_entry *stub_entry; | |
3247 | struct elf32_arm_link_hash_table *htab; | |
461a49ca | 3248 | const insn_sequence *template; |
906e58ca NC |
3249 | int template_size; |
3250 | int size; | |
3251 | int i; | |
3252 | ||
3253 | /* Massage our args to the form they really have. */ | |
3254 | stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry; | |
3255 | htab = (struct elf32_arm_link_hash_table *) in_arg; | |
3256 | ||
3257 | switch (stub_entry->stub_type) | |
3258 | { | |
fea2b4d6 CL |
3259 | case arm_stub_long_branch_any_any: |
3260 | template = elf32_arm_stub_long_branch_any_any; | |
461a49ca DJ |
3261 | template_size = sizeof (elf32_arm_stub_long_branch_any_any) / sizeof (insn_sequence); |
3262 | ||
906e58ca | 3263 | break; |
fea2b4d6 CL |
3264 | case arm_stub_long_branch_v4t_arm_thumb: |
3265 | template = elf32_arm_stub_long_branch_v4t_arm_thumb; | |
461a49ca | 3266 | template_size = sizeof (elf32_arm_stub_long_branch_v4t_arm_thumb) / sizeof (insn_sequence); |
906e58ca | 3267 | break; |
fea2b4d6 CL |
3268 | case arm_stub_long_branch_thumb_only: |
3269 | template = elf32_arm_stub_long_branch_thumb_only; | |
461a49ca | 3270 | template_size = sizeof (elf32_arm_stub_long_branch_thumb_only) / sizeof (insn_sequence); |
906e58ca | 3271 | break; |
fea2b4d6 CL |
3272 | case arm_stub_long_branch_v4t_thumb_arm: |
3273 | template = elf32_arm_stub_long_branch_v4t_thumb_arm; | |
461a49ca | 3274 | template_size = sizeof (elf32_arm_stub_long_branch_v4t_thumb_arm) / sizeof (insn_sequence); |
906e58ca | 3275 | break; |
fea2b4d6 CL |
3276 | case arm_stub_short_branch_v4t_thumb_arm: |
3277 | template = elf32_arm_stub_short_branch_v4t_thumb_arm; | |
461a49ca | 3278 | template_size = sizeof (elf32_arm_stub_short_branch_v4t_thumb_arm) / sizeof (insn_sequence); |
c820be07 | 3279 | break; |
fea2b4d6 CL |
3280 | case arm_stub_long_branch_any_any_pic: |
3281 | template = elf32_arm_stub_long_branch_any_any_pic; | |
461a49ca | 3282 | template_size = sizeof (elf32_arm_stub_long_branch_any_any_pic) / sizeof (insn_sequence); |
906e58ca NC |
3283 | break; |
3284 | default: | |
3285 | BFD_FAIL (); | |
3286 | return FALSE; | |
3287 | break; | |
3288 | } | |
3289 | ||
3290 | size = 0; | |
461a49ca DJ |
3291 | for (i = 0; i < template_size; i++) |
3292 | { | |
3293 | switch(template[i].type) | |
3294 | { | |
3295 | case THUMB16_TYPE: | |
3296 | size += 2; | |
3297 | break; | |
3298 | ||
3299 | case ARM_TYPE: | |
3300 | size += 4; | |
3301 | break; | |
3302 | ||
3303 | case DATA_TYPE: | |
3304 | size += 4; | |
3305 | break; | |
3306 | ||
3307 | default: | |
3308 | BFD_FAIL (); | |
3309 | return FALSE; | |
3310 | } | |
3311 | } | |
3312 | ||
3313 | stub_entry->stub_size = size; | |
3314 | stub_entry->stub_template = template; | |
3315 | stub_entry->stub_template_size = template_size; | |
3316 | ||
906e58ca NC |
3317 | size = (size + 7) & ~7; |
3318 | stub_entry->stub_sec->size += size; | |
461a49ca | 3319 | |
906e58ca NC |
3320 | return TRUE; |
3321 | } | |
3322 | ||
3323 | /* External entry points for sizing and building linker stubs. */ | |
3324 | ||
3325 | /* Set up various things so that we can make a list of input sections | |
3326 | for each output section included in the link. Returns -1 on error, | |
3327 | 0 when no stubs will be needed, and 1 on success. */ | |
3328 | ||
3329 | int | |
3330 | elf32_arm_setup_section_lists (bfd *output_bfd, | |
3331 | struct bfd_link_info *info) | |
3332 | { | |
3333 | bfd *input_bfd; | |
3334 | unsigned int bfd_count; | |
3335 | int top_id, top_index; | |
3336 | asection *section; | |
3337 | asection **input_list, **list; | |
3338 | bfd_size_type amt; | |
3339 | struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info); | |
3340 | ||
3341 | if (! is_elf_hash_table (htab)) | |
3342 | return 0; | |
3343 | ||
3344 | /* Count the number of input BFDs and find the top input section id. */ | |
3345 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; | |
3346 | input_bfd != NULL; | |
3347 | input_bfd = input_bfd->link_next) | |
3348 | { | |
3349 | bfd_count += 1; | |
3350 | for (section = input_bfd->sections; | |
3351 | section != NULL; | |
3352 | section = section->next) | |
3353 | { | |
3354 | if (top_id < section->id) | |
3355 | top_id = section->id; | |
3356 | } | |
3357 | } | |
3358 | htab->bfd_count = bfd_count; | |
3359 | ||
3360 | amt = sizeof (struct map_stub) * (top_id + 1); | |
3361 | htab->stub_group = bfd_zmalloc (amt); | |
3362 | if (htab->stub_group == NULL) | |
3363 | return -1; | |
3364 | ||
3365 | /* We can't use output_bfd->section_count here to find the top output | |
3366 | section index as some sections may have been removed, and | |
3367 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
3368 | for (section = output_bfd->sections, top_index = 0; | |
3369 | section != NULL; | |
3370 | section = section->next) | |
3371 | { | |
3372 | if (top_index < section->index) | |
3373 | top_index = section->index; | |
3374 | } | |
3375 | ||
3376 | htab->top_index = top_index; | |
3377 | amt = sizeof (asection *) * (top_index + 1); | |
3378 | input_list = bfd_malloc (amt); | |
3379 | htab->input_list = input_list; | |
3380 | if (input_list == NULL) | |
3381 | return -1; | |
3382 | ||
3383 | /* For sections we aren't interested in, mark their entries with a | |
3384 | value we can check later. */ | |
3385 | list = input_list + top_index; | |
3386 | do | |
3387 | *list = bfd_abs_section_ptr; | |
3388 | while (list-- != input_list); | |
3389 | ||
3390 | for (section = output_bfd->sections; | |
3391 | section != NULL; | |
3392 | section = section->next) | |
3393 | { | |
3394 | if ((section->flags & SEC_CODE) != 0) | |
3395 | input_list[section->index] = NULL; | |
3396 | } | |
3397 | ||
3398 | return 1; | |
3399 | } | |
3400 | ||
3401 | /* The linker repeatedly calls this function for each input section, | |
3402 | in the order that input sections are linked into output sections. | |
3403 | Build lists of input sections to determine groupings between which | |
3404 | we may insert linker stubs. */ | |
3405 | ||
3406 | void | |
3407 | elf32_arm_next_input_section (struct bfd_link_info *info, | |
3408 | asection *isec) | |
3409 | { | |
3410 | struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info); | |
3411 | ||
3412 | if (isec->output_section->index <= htab->top_index) | |
3413 | { | |
3414 | asection **list = htab->input_list + isec->output_section->index; | |
3415 | ||
3416 | if (*list != bfd_abs_section_ptr) | |
3417 | { | |
3418 | /* Steal the link_sec pointer for our list. */ | |
3419 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) | |
3420 | /* This happens to make the list in reverse order, | |
3421 | which is what we want. */ | |
3422 | PREV_SEC (isec) = *list; | |
3423 | *list = isec; | |
3424 | } | |
3425 | } | |
3426 | } | |
3427 | ||
3428 | /* See whether we can group stub sections together. Grouping stub | |
3429 | sections may result in fewer stubs. More importantly, we need to | |
3430 | put all .init* and .fini* stubs at the beginning of the .init or | |
3431 | .fini output sections respectively, because glibc splits the | |
3432 | _init and _fini functions into multiple parts. Putting a stub in | |
3433 | the middle of a function is not a good idea. */ | |
3434 | ||
3435 | static void | |
3436 | group_sections (struct elf32_arm_link_hash_table *htab, | |
3437 | bfd_size_type stub_group_size, | |
3438 | bfd_boolean stubs_always_before_branch) | |
3439 | { | |
3440 | asection **list = htab->input_list + htab->top_index; | |
3441 | ||
3442 | do | |
3443 | { | |
3444 | asection *tail = *list; | |
3445 | ||
3446 | if (tail == bfd_abs_section_ptr) | |
3447 | continue; | |
3448 | ||
3449 | while (tail != NULL) | |
3450 | { | |
3451 | asection *curr; | |
3452 | asection *prev; | |
3453 | bfd_size_type total; | |
3454 | ||
3455 | curr = tail; | |
3456 | total = tail->size; | |
3457 | while ((prev = PREV_SEC (curr)) != NULL | |
3458 | && ((total += curr->output_offset - prev->output_offset) | |
3459 | < stub_group_size)) | |
3460 | curr = prev; | |
3461 | ||
3462 | /* OK, the size from the start of CURR to the end is less | |
3463 | than stub_group_size and thus can be handled by one stub | |
7fb9f789 | 3464 | section. (Or the tail section is itself larger than |
906e58ca NC |
3465 | stub_group_size, in which case we may be toast.) |
3466 | We should really be keeping track of the total size of | |
3467 | stubs added here, as stubs contribute to the final output | |
7fb9f789 | 3468 | section size. */ |
906e58ca NC |
3469 | do |
3470 | { | |
3471 | prev = PREV_SEC (tail); | |
3472 | /* Set up this stub group. */ | |
3473 | htab->stub_group[tail->id].link_sec = curr; | |
3474 | } | |
3475 | while (tail != curr && (tail = prev) != NULL); | |
3476 | ||
3477 | /* But wait, there's more! Input sections up to stub_group_size | |
3478 | bytes before the stub section can be handled by it too. */ | |
3479 | if (!stubs_always_before_branch) | |
3480 | { | |
3481 | total = 0; | |
3482 | while (prev != NULL | |
3483 | && ((total += tail->output_offset - prev->output_offset) | |
3484 | < stub_group_size)) | |
3485 | { | |
3486 | tail = prev; | |
3487 | prev = PREV_SEC (tail); | |
3488 | htab->stub_group[tail->id].link_sec = curr; | |
3489 | } | |
3490 | } | |
3491 | tail = prev; | |
3492 | } | |
3493 | } | |
3494 | while (list-- != htab->input_list); | |
3495 | ||
3496 | free (htab->input_list); | |
3497 | #undef PREV_SEC | |
3498 | } | |
3499 | ||
3500 | /* Determine and set the size of the stub section for a final link. | |
3501 | ||
3502 | The basic idea here is to examine all the relocations looking for | |
3503 | PC-relative calls to a target that is unreachable with a "bl" | |
3504 | instruction. */ | |
3505 | ||
3506 | bfd_boolean | |
3507 | elf32_arm_size_stubs (bfd *output_bfd, | |
3508 | bfd *stub_bfd, | |
3509 | struct bfd_link_info *info, | |
3510 | bfd_signed_vma group_size, | |
3511 | asection * (*add_stub_section) (const char *, asection *), | |
3512 | void (*layout_sections_again) (void)) | |
3513 | { | |
3514 | bfd_size_type stub_group_size; | |
3515 | bfd_boolean stubs_always_before_branch; | |
3516 | bfd_boolean stub_changed = 0; | |
3517 | struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info); | |
3518 | ||
3519 | /* Propagate mach to stub bfd, because it may not have been | |
3520 | finalized when we created stub_bfd. */ | |
3521 | bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd), | |
3522 | bfd_get_mach (output_bfd)); | |
3523 | ||
3524 | /* Stash our params away. */ | |
3525 | htab->stub_bfd = stub_bfd; | |
3526 | htab->add_stub_section = add_stub_section; | |
3527 | htab->layout_sections_again = layout_sections_again; | |
3528 | stubs_always_before_branch = group_size < 0; | |
3529 | if (group_size < 0) | |
3530 | stub_group_size = -group_size; | |
3531 | else | |
3532 | stub_group_size = group_size; | |
3533 | ||
3534 | if (stub_group_size == 1) | |
3535 | { | |
3536 | /* Default values. */ | |
3537 | /* Thumb branch range is +-4MB has to be used as the default | |
3538 | maximum size (a given section can contain both ARM and Thumb | |
3539 | code, so the worst case has to be taken into account). | |
3540 | ||
3541 | This value is 24K less than that, which allows for 2025 | |
3542 | 12-byte stubs. If we exceed that, then we will fail to link. | |
3543 | The user will have to relink with an explicit group size | |
3544 | option. */ | |
3545 | stub_group_size = 4170000; | |
3546 | } | |
3547 | ||
3548 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
3549 | ||
3550 | while (1) | |
3551 | { | |
3552 | bfd *input_bfd; | |
3553 | unsigned int bfd_indx; | |
3554 | asection *stub_sec; | |
3555 | ||
3556 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
3557 | input_bfd != NULL; | |
3558 | input_bfd = input_bfd->link_next, bfd_indx++) | |
3559 | { | |
3560 | Elf_Internal_Shdr *symtab_hdr; | |
3561 | asection *section; | |
3562 | Elf_Internal_Sym *local_syms = NULL; | |
3563 | ||
3564 | /* We'll need the symbol table in a second. */ | |
3565 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3566 | if (symtab_hdr->sh_info == 0) | |
3567 | continue; | |
3568 | ||
3569 | /* Walk over each section attached to the input bfd. */ | |
3570 | for (section = input_bfd->sections; | |
3571 | section != NULL; | |
3572 | section = section->next) | |
3573 | { | |
3574 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
3575 | ||
3576 | /* If there aren't any relocs, then there's nothing more | |
3577 | to do. */ | |
3578 | if ((section->flags & SEC_RELOC) == 0 | |
3579 | || section->reloc_count == 0 | |
3580 | || (section->flags & SEC_CODE) == 0) | |
3581 | continue; | |
3582 | ||
3583 | /* If this section is a link-once section that will be | |
3584 | discarded, then don't create any stubs. */ | |
3585 | if (section->output_section == NULL | |
3586 | || section->output_section->owner != output_bfd) | |
3587 | continue; | |
3588 | ||
3589 | /* Get the relocs. */ | |
3590 | internal_relocs | |
3591 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, | |
3592 | NULL, info->keep_memory); | |
3593 | if (internal_relocs == NULL) | |
3594 | goto error_ret_free_local; | |
3595 | ||
3596 | /* Now examine each relocation. */ | |
3597 | irela = internal_relocs; | |
3598 | irelaend = irela + section->reloc_count; | |
3599 | for (; irela < irelaend; irela++) | |
3600 | { | |
3601 | unsigned int r_type, r_indx; | |
3602 | enum elf32_arm_stub_type stub_type; | |
3603 | struct elf32_arm_stub_hash_entry *stub_entry; | |
3604 | asection *sym_sec; | |
3605 | bfd_vma sym_value; | |
3606 | bfd_vma destination; | |
3607 | struct elf32_arm_link_hash_entry *hash; | |
7413f23f | 3608 | const char *sym_name; |
906e58ca NC |
3609 | char *stub_name; |
3610 | const asection *id_sec; | |
3611 | unsigned char st_type; | |
3612 | ||
3613 | r_type = ELF32_R_TYPE (irela->r_info); | |
3614 | r_indx = ELF32_R_SYM (irela->r_info); | |
3615 | ||
3616 | if (r_type >= (unsigned int) R_ARM_max) | |
3617 | { | |
3618 | bfd_set_error (bfd_error_bad_value); | |
3619 | error_ret_free_internal: | |
3620 | if (elf_section_data (section)->relocs == NULL) | |
3621 | free (internal_relocs); | |
3622 | goto error_ret_free_local; | |
3623 | } | |
3624 | ||
3625 | /* Only look for stubs on call instructions. */ | |
3626 | if ((r_type != (unsigned int) R_ARM_CALL) | |
3627 | && (r_type != (unsigned int) R_ARM_THM_CALL)) | |
3628 | continue; | |
3629 | ||
3630 | /* Now determine the call target, its name, value, | |
3631 | section. */ | |
3632 | sym_sec = NULL; | |
3633 | sym_value = 0; | |
3634 | destination = 0; | |
3635 | hash = NULL; | |
7413f23f | 3636 | sym_name = NULL; |
906e58ca NC |
3637 | if (r_indx < symtab_hdr->sh_info) |
3638 | { | |
3639 | /* It's a local symbol. */ | |
3640 | Elf_Internal_Sym *sym; | |
3641 | Elf_Internal_Shdr *hdr; | |
3642 | ||
3643 | if (local_syms == NULL) | |
3644 | { | |
3645 | local_syms | |
3646 | = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3647 | if (local_syms == NULL) | |
3648 | local_syms | |
3649 | = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
3650 | symtab_hdr->sh_info, 0, | |
3651 | NULL, NULL, NULL); | |
3652 | if (local_syms == NULL) | |
3653 | goto error_ret_free_internal; | |
3654 | } | |
3655 | ||
3656 | sym = local_syms + r_indx; | |
3657 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
3658 | sym_sec = hdr->bfd_section; | |
3659 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
3660 | sym_value = sym->st_value; | |
3661 | destination = (sym_value + irela->r_addend | |
3662 | + sym_sec->output_offset | |
3663 | + sym_sec->output_section->vma); | |
3664 | st_type = ELF_ST_TYPE (sym->st_info); | |
7413f23f DJ |
3665 | sym_name |
3666 | = bfd_elf_string_from_elf_section (input_bfd, | |
3667 | symtab_hdr->sh_link, | |
3668 | sym->st_name); | |
906e58ca NC |
3669 | } |
3670 | else | |
3671 | { | |
3672 | /* It's an external symbol. */ | |
3673 | int e_indx; | |
3674 | ||
3675 | e_indx = r_indx - symtab_hdr->sh_info; | |
3676 | hash = ((struct elf32_arm_link_hash_entry *) | |
3677 | elf_sym_hashes (input_bfd)[e_indx]); | |
3678 | ||
3679 | while (hash->root.root.type == bfd_link_hash_indirect | |
3680 | || hash->root.root.type == bfd_link_hash_warning) | |
3681 | hash = ((struct elf32_arm_link_hash_entry *) | |
3682 | hash->root.root.u.i.link); | |
3683 | ||
3684 | if (hash->root.root.type == bfd_link_hash_defined | |
3685 | || hash->root.root.type == bfd_link_hash_defweak) | |
3686 | { | |
3687 | sym_sec = hash->root.root.u.def.section; | |
3688 | sym_value = hash->root.root.u.def.value; | |
3689 | if (sym_sec->output_section != NULL) | |
3690 | destination = (sym_value + irela->r_addend | |
3691 | + sym_sec->output_offset | |
3692 | + sym_sec->output_section->vma); | |
3693 | } | |
3694 | else if (hash->root.root.type == bfd_link_hash_undefweak | |
3695 | || hash->root.root.type == bfd_link_hash_undefined) | |
3696 | /* For a shared library, these will need a PLT stub, | |
3697 | which is treated separately. | |
3698 | For absolute code, they cannot be handled. */ | |
3699 | continue; | |
3700 | else | |
3701 | { | |
3702 | bfd_set_error (bfd_error_bad_value); | |
3703 | goto error_ret_free_internal; | |
3704 | } | |
3705 | st_type = ELF_ST_TYPE (hash->root.type); | |
7413f23f | 3706 | sym_name = hash->root.root.root.string; |
906e58ca NC |
3707 | } |
3708 | ||
3709 | /* Determine what (if any) linker stub is needed. */ | |
3710 | stub_type = arm_type_of_stub (info, section, irela, st_type, | |
c820be07 NC |
3711 | hash, destination, sym_sec, |
3712 | input_bfd, sym_name); | |
906e58ca NC |
3713 | if (stub_type == arm_stub_none) |
3714 | continue; | |
5e681ec4 | 3715 | |
906e58ca NC |
3716 | /* Support for grouping stub sections. */ |
3717 | id_sec = htab->stub_group[section->id].link_sec; | |
5e681ec4 | 3718 | |
906e58ca NC |
3719 | /* Get the name of this stub. */ |
3720 | stub_name = elf32_arm_stub_name (id_sec, sym_sec, hash, irela); | |
3721 | if (!stub_name) | |
3722 | goto error_ret_free_internal; | |
5e681ec4 | 3723 | |
906e58ca NC |
3724 | stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, |
3725 | stub_name, | |
3726 | FALSE, FALSE); | |
3727 | if (stub_entry != NULL) | |
3728 | { | |
3729 | /* The proper stub has already been created. */ | |
3730 | free (stub_name); | |
3731 | continue; | |
3732 | } | |
5e681ec4 | 3733 | |
da5938a2 | 3734 | stub_entry = elf32_arm_add_stub (stub_name, section, htab); |
906e58ca NC |
3735 | if (stub_entry == NULL) |
3736 | { | |
3737 | free (stub_name); | |
3738 | goto error_ret_free_internal; | |
3739 | } | |
5e681ec4 | 3740 | |
906e58ca NC |
3741 | stub_entry->target_value = sym_value; |
3742 | stub_entry->target_section = sym_sec; | |
3743 | stub_entry->stub_type = stub_type; | |
3744 | stub_entry->h = hash; | |
3745 | stub_entry->st_type = st_type; | |
7413f23f DJ |
3746 | |
3747 | if (sym_name == NULL) | |
3748 | sym_name = "unnamed"; | |
3749 | stub_entry->output_name | |
3750 | = bfd_alloc (htab->stub_bfd, | |
3751 | sizeof (THUMB2ARM_GLUE_ENTRY_NAME) | |
3752 | + strlen (sym_name)); | |
3753 | if (stub_entry->output_name == NULL) | |
3754 | { | |
3755 | free (stub_name); | |
3756 | goto error_ret_free_internal; | |
3757 | } | |
3758 | ||
3759 | /* For historical reasons, use the existing names for | |
3760 | ARM-to-Thumb and Thumb-to-ARM stubs. */ | |
3761 | if (r_type == (unsigned int) R_ARM_THM_CALL | |
3762 | && st_type != STT_ARM_TFUNC) | |
3763 | sprintf (stub_entry->output_name, THUMB2ARM_GLUE_ENTRY_NAME, | |
3764 | sym_name); | |
3765 | else if (r_type == (unsigned int) R_ARM_CALL | |
3766 | && st_type == STT_ARM_TFUNC) | |
3767 | sprintf (stub_entry->output_name, ARM2THUMB_GLUE_ENTRY_NAME, | |
3768 | sym_name); | |
3769 | else | |
3770 | sprintf (stub_entry->output_name, STUB_ENTRY_NAME, | |
3771 | sym_name); | |
3772 | ||
906e58ca NC |
3773 | stub_changed = TRUE; |
3774 | } | |
3775 | ||
3776 | /* We're done with the internal relocs, free them. */ | |
3777 | if (elf_section_data (section)->relocs == NULL) | |
3778 | free (internal_relocs); | |
5e681ec4 | 3779 | } |
5e681ec4 PB |
3780 | } |
3781 | ||
906e58ca NC |
3782 | if (!stub_changed) |
3783 | break; | |
5e681ec4 | 3784 | |
906e58ca NC |
3785 | /* OK, we've added some stubs. Find out the new size of the |
3786 | stub sections. */ | |
3787 | for (stub_sec = htab->stub_bfd->sections; | |
3788 | stub_sec != NULL; | |
3789 | stub_sec = stub_sec->next) | |
3790 | stub_sec->size = 0; | |
b34b2d70 | 3791 | |
906e58ca NC |
3792 | bfd_hash_traverse (&htab->stub_hash_table, arm_size_one_stub, htab); |
3793 | ||
3794 | /* Ask the linker to do its stuff. */ | |
3795 | (*htab->layout_sections_again) (); | |
3796 | stub_changed = FALSE; | |
ba93b8ac DJ |
3797 | } |
3798 | ||
906e58ca NC |
3799 | return TRUE; |
3800 | ||
3801 | error_ret_free_local: | |
3802 | return FALSE; | |
5e681ec4 PB |
3803 | } |
3804 | ||
906e58ca NC |
3805 | /* Build all the stubs associated with the current output file. The |
3806 | stubs are kept in a hash table attached to the main linker hash | |
3807 | table. We also set up the .plt entries for statically linked PIC | |
3808 | functions here. This function is called via arm_elf_finish in the | |
3809 | linker. */ | |
252b5132 | 3810 | |
906e58ca NC |
3811 | bfd_boolean |
3812 | elf32_arm_build_stubs (struct bfd_link_info *info) | |
252b5132 | 3813 | { |
906e58ca NC |
3814 | asection *stub_sec; |
3815 | struct bfd_hash_table *table; | |
3816 | struct elf32_arm_link_hash_table *htab; | |
252b5132 | 3817 | |
906e58ca | 3818 | htab = elf32_arm_hash_table (info); |
252b5132 | 3819 | |
906e58ca NC |
3820 | for (stub_sec = htab->stub_bfd->sections; |
3821 | stub_sec != NULL; | |
3822 | stub_sec = stub_sec->next) | |
252b5132 | 3823 | { |
906e58ca NC |
3824 | bfd_size_type size; |
3825 | ||
8029a119 | 3826 | /* Ignore non-stub sections. */ |
906e58ca NC |
3827 | if (!strstr (stub_sec->name, STUB_SUFFIX)) |
3828 | continue; | |
3829 | ||
3830 | /* Allocate memory to hold the linker stubs. */ | |
3831 | size = stub_sec->size; | |
3832 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, size); | |
3833 | if (stub_sec->contents == NULL && size != 0) | |
3834 | return FALSE; | |
3835 | stub_sec->size = 0; | |
252b5132 RH |
3836 | } |
3837 | ||
906e58ca NC |
3838 | /* Build the stubs as directed by the stub hash table. */ |
3839 | table = &htab->stub_hash_table; | |
3840 | bfd_hash_traverse (table, arm_build_one_stub, info); | |
252b5132 | 3841 | |
906e58ca | 3842 | return TRUE; |
252b5132 RH |
3843 | } |
3844 | ||
9b485d32 NC |
3845 | /* Locate the Thumb encoded calling stub for NAME. */ |
3846 | ||
252b5132 | 3847 | static struct elf_link_hash_entry * |
57e8b36a NC |
3848 | find_thumb_glue (struct bfd_link_info *link_info, |
3849 | const char *name, | |
f2a9dd69 | 3850 | char **error_message) |
252b5132 RH |
3851 | { |
3852 | char *tmp_name; | |
3853 | struct elf_link_hash_entry *hash; | |
3854 | struct elf32_arm_link_hash_table *hash_table; | |
3855 | ||
3856 | /* We need a pointer to the armelf specific hash table. */ | |
3857 | hash_table = elf32_arm_hash_table (link_info); | |
3858 | ||
57e8b36a NC |
3859 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
3860 | + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1); | |
252b5132 RH |
3861 | |
3862 | BFD_ASSERT (tmp_name); | |
3863 | ||
3864 | sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); | |
3865 | ||
3866 | hash = elf_link_hash_lookup | |
b34976b6 | 3867 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 | 3868 | |
b1657152 AM |
3869 | if (hash == NULL |
3870 | && asprintf (error_message, _("unable to find THUMB glue '%s' for '%s'"), | |
3871 | tmp_name, name) == -1) | |
3872 | *error_message = (char *) bfd_errmsg (bfd_error_system_call); | |
252b5132 RH |
3873 | |
3874 | free (tmp_name); | |
3875 | ||
3876 | return hash; | |
3877 | } | |
3878 | ||
9b485d32 NC |
3879 | /* Locate the ARM encoded calling stub for NAME. */ |
3880 | ||
252b5132 | 3881 | static struct elf_link_hash_entry * |
57e8b36a NC |
3882 | find_arm_glue (struct bfd_link_info *link_info, |
3883 | const char *name, | |
f2a9dd69 | 3884 | char **error_message) |
252b5132 RH |
3885 | { |
3886 | char *tmp_name; | |
3887 | struct elf_link_hash_entry *myh; | |
3888 | struct elf32_arm_link_hash_table *hash_table; | |
3889 | ||
3890 | /* We need a pointer to the elfarm specific hash table. */ | |
3891 | hash_table = elf32_arm_hash_table (link_info); | |
3892 | ||
57e8b36a NC |
3893 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
3894 | + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1); | |
252b5132 RH |
3895 | |
3896 | BFD_ASSERT (tmp_name); | |
3897 | ||
3898 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); | |
3899 | ||
3900 | myh = elf_link_hash_lookup | |
b34976b6 | 3901 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 | 3902 | |
b1657152 AM |
3903 | if (myh == NULL |
3904 | && asprintf (error_message, _("unable to find ARM glue '%s' for '%s'"), | |
3905 | tmp_name, name) == -1) | |
3906 | *error_message = (char *) bfd_errmsg (bfd_error_system_call); | |
252b5132 RH |
3907 | |
3908 | free (tmp_name); | |
3909 | ||
3910 | return myh; | |
3911 | } | |
3912 | ||
8f6277f5 | 3913 | /* ARM->Thumb glue (static images): |
252b5132 RH |
3914 | |
3915 | .arm | |
3916 | __func_from_arm: | |
3917 | ldr r12, __func_addr | |
3918 | bx r12 | |
3919 | __func_addr: | |
906e58ca | 3920 | .word func @ behave as if you saw a ARM_32 reloc. |
252b5132 | 3921 | |
26079076 PB |
3922 | (v5t static images) |
3923 | .arm | |
3924 | __func_from_arm: | |
3925 | ldr pc, __func_addr | |
3926 | __func_addr: | |
906e58ca | 3927 | .word func @ behave as if you saw a ARM_32 reloc. |
26079076 | 3928 | |
8f6277f5 PB |
3929 | (relocatable images) |
3930 | .arm | |
3931 | __func_from_arm: | |
3932 | ldr r12, __func_offset | |
3933 | add r12, r12, pc | |
3934 | bx r12 | |
3935 | __func_offset: | |
8029a119 | 3936 | .word func - . */ |
8f6277f5 PB |
3937 | |
3938 | #define ARM2THUMB_STATIC_GLUE_SIZE 12 | |
252b5132 RH |
3939 | static const insn32 a2t1_ldr_insn = 0xe59fc000; |
3940 | static const insn32 a2t2_bx_r12_insn = 0xe12fff1c; | |
3941 | static const insn32 a2t3_func_addr_insn = 0x00000001; | |
3942 | ||
26079076 PB |
3943 | #define ARM2THUMB_V5_STATIC_GLUE_SIZE 8 |
3944 | static const insn32 a2t1v5_ldr_insn = 0xe51ff004; | |
3945 | static const insn32 a2t2v5_func_addr_insn = 0x00000001; | |
3946 | ||
8f6277f5 PB |
3947 | #define ARM2THUMB_PIC_GLUE_SIZE 16 |
3948 | static const insn32 a2t1p_ldr_insn = 0xe59fc004; | |
3949 | static const insn32 a2t2p_add_pc_insn = 0xe08cc00f; | |
3950 | static const insn32 a2t3p_bx_r12_insn = 0xe12fff1c; | |
3951 | ||
9b485d32 | 3952 | /* Thumb->ARM: Thumb->(non-interworking aware) ARM |
252b5132 | 3953 | |
8029a119 NC |
3954 | .thumb .thumb |
3955 | .align 2 .align 2 | |
3956 | __func_from_thumb: __func_from_thumb: | |
3957 | bx pc push {r6, lr} | |
3958 | nop ldr r6, __func_addr | |
3959 | .arm mov lr, pc | |
3960 | b func bx r6 | |
fcef9eb7 NC |
3961 | .arm |
3962 | ;; back_to_thumb | |
3963 | ldmia r13! {r6, lr} | |
3964 | bx lr | |
8029a119 NC |
3965 | __func_addr: |
3966 | .word func */ | |
252b5132 RH |
3967 | |
3968 | #define THUMB2ARM_GLUE_SIZE 8 | |
3969 | static const insn16 t2a1_bx_pc_insn = 0x4778; | |
3970 | static const insn16 t2a2_noop_insn = 0x46c0; | |
3971 | static const insn32 t2a3_b_insn = 0xea000000; | |
3972 | ||
c7b8f16e JB |
3973 | #define VFP11_ERRATUM_VENEER_SIZE 8 |
3974 | ||
845b51d6 PB |
3975 | #define ARM_BX_VENEER_SIZE 12 |
3976 | static const insn32 armbx1_tst_insn = 0xe3100001; | |
3977 | static const insn32 armbx2_moveq_insn = 0x01a0f000; | |
3978 | static const insn32 armbx3_bx_insn = 0xe12fff10; | |
3979 | ||
7e392df6 | 3980 | #ifndef ELFARM_NABI_C_INCLUDED |
8029a119 NC |
3981 | static void |
3982 | arm_allocate_glue_section_space (bfd * abfd, bfd_size_type size, const char * name) | |
252b5132 RH |
3983 | { |
3984 | asection * s; | |
8029a119 | 3985 | bfd_byte * contents; |
252b5132 | 3986 | |
8029a119 NC |
3987 | if (size == 0) |
3988 | return; | |
252b5132 | 3989 | |
8029a119 | 3990 | BFD_ASSERT (abfd != NULL); |
252b5132 | 3991 | |
8029a119 NC |
3992 | s = bfd_get_section_by_name (abfd, name); |
3993 | BFD_ASSERT (s != NULL); | |
252b5132 | 3994 | |
8029a119 | 3995 | contents = bfd_alloc (abfd, size); |
252b5132 | 3996 | |
8029a119 NC |
3997 | BFD_ASSERT (s->size == size); |
3998 | s->contents = contents; | |
3999 | } | |
906e58ca | 4000 | |
8029a119 NC |
4001 | bfd_boolean |
4002 | bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info * info) | |
4003 | { | |
4004 | struct elf32_arm_link_hash_table * globals; | |
906e58ca | 4005 | |
8029a119 NC |
4006 | globals = elf32_arm_hash_table (info); |
4007 | BFD_ASSERT (globals != NULL); | |
906e58ca | 4008 | |
8029a119 NC |
4009 | arm_allocate_glue_section_space (globals->bfd_of_glue_owner, |
4010 | globals->arm_glue_size, | |
4011 | ARM2THUMB_GLUE_SECTION_NAME); | |
906e58ca | 4012 | |
8029a119 NC |
4013 | arm_allocate_glue_section_space (globals->bfd_of_glue_owner, |
4014 | globals->thumb_glue_size, | |
4015 | THUMB2ARM_GLUE_SECTION_NAME); | |
252b5132 | 4016 | |
8029a119 NC |
4017 | arm_allocate_glue_section_space (globals->bfd_of_glue_owner, |
4018 | globals->vfp11_erratum_glue_size, | |
4019 | VFP11_ERRATUM_VENEER_SECTION_NAME); | |
845b51d6 | 4020 | |
8029a119 NC |
4021 | arm_allocate_glue_section_space (globals->bfd_of_glue_owner, |
4022 | globals->bx_glue_size, | |
845b51d6 PB |
4023 | ARM_BX_GLUE_SECTION_NAME); |
4024 | ||
b34976b6 | 4025 | return TRUE; |
252b5132 RH |
4026 | } |
4027 | ||
a4fd1a8e | 4028 | /* Allocate space and symbols for calling a Thumb function from Arm mode. |
906e58ca NC |
4029 | returns the symbol identifying the stub. */ |
4030 | ||
a4fd1a8e | 4031 | static struct elf_link_hash_entry * |
57e8b36a NC |
4032 | record_arm_to_thumb_glue (struct bfd_link_info * link_info, |
4033 | struct elf_link_hash_entry * h) | |
252b5132 RH |
4034 | { |
4035 | const char * name = h->root.root.string; | |
63b0f745 | 4036 | asection * s; |
252b5132 RH |
4037 | char * tmp_name; |
4038 | struct elf_link_hash_entry * myh; | |
14a793b2 | 4039 | struct bfd_link_hash_entry * bh; |
252b5132 | 4040 | struct elf32_arm_link_hash_table * globals; |
dc810e39 | 4041 | bfd_vma val; |
2f475487 | 4042 | bfd_size_type size; |
252b5132 RH |
4043 | |
4044 | globals = elf32_arm_hash_table (link_info); | |
4045 | ||
4046 | BFD_ASSERT (globals != NULL); | |
4047 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
4048 | ||
4049 | s = bfd_get_section_by_name | |
4050 | (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME); | |
4051 | ||
252b5132 RH |
4052 | BFD_ASSERT (s != NULL); |
4053 | ||
57e8b36a | 4054 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1); |
252b5132 RH |
4055 | |
4056 | BFD_ASSERT (tmp_name); | |
4057 | ||
4058 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); | |
4059 | ||
4060 | myh = elf_link_hash_lookup | |
b34976b6 | 4061 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 RH |
4062 | |
4063 | if (myh != NULL) | |
4064 | { | |
9b485d32 | 4065 | /* We've already seen this guy. */ |
252b5132 | 4066 | free (tmp_name); |
a4fd1a8e | 4067 | return myh; |
252b5132 RH |
4068 | } |
4069 | ||
57e8b36a NC |
4070 | /* The only trick here is using hash_table->arm_glue_size as the value. |
4071 | Even though the section isn't allocated yet, this is where we will be | |
3dccd7b7 DJ |
4072 | putting it. The +1 on the value marks that the stub has not been |
4073 | output yet - not that it is a Thumb function. */ | |
14a793b2 | 4074 | bh = NULL; |
dc810e39 AM |
4075 | val = globals->arm_glue_size + 1; |
4076 | _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner, | |
4077 | tmp_name, BSF_GLOBAL, s, val, | |
b34976b6 | 4078 | NULL, TRUE, FALSE, &bh); |
252b5132 | 4079 | |
b7693d02 DJ |
4080 | myh = (struct elf_link_hash_entry *) bh; |
4081 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
4082 | myh->forced_local = 1; | |
4083 | ||
252b5132 RH |
4084 | free (tmp_name); |
4085 | ||
27e55c4d PB |
4086 | if (link_info->shared || globals->root.is_relocatable_executable |
4087 | || globals->pic_veneer) | |
2f475487 | 4088 | size = ARM2THUMB_PIC_GLUE_SIZE; |
26079076 PB |
4089 | else if (globals->use_blx) |
4090 | size = ARM2THUMB_V5_STATIC_GLUE_SIZE; | |
8f6277f5 | 4091 | else |
2f475487 AM |
4092 | size = ARM2THUMB_STATIC_GLUE_SIZE; |
4093 | ||
4094 | s->size += size; | |
4095 | globals->arm_glue_size += size; | |
252b5132 | 4096 | |
a4fd1a8e | 4097 | return myh; |
252b5132 RH |
4098 | } |
4099 | ||
4100 | static void | |
57e8b36a NC |
4101 | record_thumb_to_arm_glue (struct bfd_link_info *link_info, |
4102 | struct elf_link_hash_entry *h) | |
252b5132 RH |
4103 | { |
4104 | const char *name = h->root.root.string; | |
63b0f745 | 4105 | asection *s; |
252b5132 RH |
4106 | char *tmp_name; |
4107 | struct elf_link_hash_entry *myh; | |
14a793b2 | 4108 | struct bfd_link_hash_entry *bh; |
252b5132 | 4109 | struct elf32_arm_link_hash_table *hash_table; |
dc810e39 | 4110 | bfd_vma val; |
252b5132 RH |
4111 | |
4112 | hash_table = elf32_arm_hash_table (link_info); | |
4113 | ||
4114 | BFD_ASSERT (hash_table != NULL); | |
4115 | BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL); | |
4116 | ||
4117 | s = bfd_get_section_by_name | |
4118 | (hash_table->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME); | |
4119 | ||
4120 | BFD_ASSERT (s != NULL); | |
4121 | ||
57e8b36a NC |
4122 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
4123 | + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1); | |
252b5132 RH |
4124 | |
4125 | BFD_ASSERT (tmp_name); | |
4126 | ||
4127 | sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); | |
4128 | ||
4129 | myh = elf_link_hash_lookup | |
b34976b6 | 4130 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 RH |
4131 | |
4132 | if (myh != NULL) | |
4133 | { | |
9b485d32 | 4134 | /* We've already seen this guy. */ |
252b5132 | 4135 | free (tmp_name); |
9b485d32 | 4136 | return; |
252b5132 RH |
4137 | } |
4138 | ||
3dccd7b7 DJ |
4139 | /* The only trick here is using hash_table->thumb_glue_size as the value. |
4140 | Even though the section isn't allocated yet, this is where we will be | |
4141 | putting it. The +1 on the value marks that the stub has not been | |
4142 | output yet - not that it is a Thumb function. */ | |
14a793b2 | 4143 | bh = NULL; |
dc810e39 AM |
4144 | val = hash_table->thumb_glue_size + 1; |
4145 | _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, | |
4146 | tmp_name, BSF_GLOBAL, s, val, | |
b34976b6 | 4147 | NULL, TRUE, FALSE, &bh); |
252b5132 | 4148 | |
9b485d32 | 4149 | /* If we mark it 'Thumb', the disassembler will do a better job. */ |
14a793b2 | 4150 | myh = (struct elf_link_hash_entry *) bh; |
b7693d02 DJ |
4151 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC); |
4152 | myh->forced_local = 1; | |
252b5132 RH |
4153 | |
4154 | free (tmp_name); | |
4155 | ||
252b5132 RH |
4156 | #define CHANGE_TO_ARM "__%s_change_to_arm" |
4157 | #define BACK_FROM_ARM "__%s_back_from_arm" | |
4158 | ||
9b485d32 | 4159 | /* Allocate another symbol to mark where we switch to Arm mode. */ |
57e8b36a NC |
4160 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
4161 | + strlen (CHANGE_TO_ARM) + 1); | |
252b5132 RH |
4162 | |
4163 | BFD_ASSERT (tmp_name); | |
4164 | ||
4165 | sprintf (tmp_name, CHANGE_TO_ARM, name); | |
4166 | ||
14a793b2 | 4167 | bh = NULL; |
dc810e39 AM |
4168 | val = hash_table->thumb_glue_size + 4, |
4169 | _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, | |
4170 | tmp_name, BSF_LOCAL, s, val, | |
b34976b6 | 4171 | NULL, TRUE, FALSE, &bh); |
252b5132 RH |
4172 | |
4173 | free (tmp_name); | |
4174 | ||
2f475487 | 4175 | s->size += THUMB2ARM_GLUE_SIZE; |
252b5132 | 4176 | hash_table->thumb_glue_size += THUMB2ARM_GLUE_SIZE; |
252b5132 RH |
4177 | } |
4178 | ||
c7b8f16e | 4179 | |
845b51d6 PB |
4180 | /* Allocate space for ARMv4 BX veneers. */ |
4181 | ||
4182 | static void | |
4183 | record_arm_bx_glue (struct bfd_link_info * link_info, int reg) | |
4184 | { | |
4185 | asection * s; | |
4186 | struct elf32_arm_link_hash_table *globals; | |
4187 | char *tmp_name; | |
4188 | struct elf_link_hash_entry *myh; | |
4189 | struct bfd_link_hash_entry *bh; | |
4190 | bfd_vma val; | |
4191 | ||
4192 | /* BX PC does not need a veneer. */ | |
4193 | if (reg == 15) | |
4194 | return; | |
4195 | ||
4196 | globals = elf32_arm_hash_table (link_info); | |
4197 | ||
4198 | BFD_ASSERT (globals != NULL); | |
4199 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
4200 | ||
4201 | /* Check if this veneer has already been allocated. */ | |
4202 | if (globals->bx_glue_offset[reg]) | |
4203 | return; | |
4204 | ||
4205 | s = bfd_get_section_by_name | |
4206 | (globals->bfd_of_glue_owner, ARM_BX_GLUE_SECTION_NAME); | |
4207 | ||
4208 | BFD_ASSERT (s != NULL); | |
4209 | ||
4210 | /* Add symbol for veneer. */ | |
4211 | tmp_name = bfd_malloc ((bfd_size_type) strlen (ARM_BX_GLUE_ENTRY_NAME) + 1); | |
906e58ca | 4212 | |
845b51d6 | 4213 | BFD_ASSERT (tmp_name); |
906e58ca | 4214 | |
845b51d6 | 4215 | sprintf (tmp_name, ARM_BX_GLUE_ENTRY_NAME, reg); |
906e58ca | 4216 | |
845b51d6 PB |
4217 | myh = elf_link_hash_lookup |
4218 | (&(globals)->root, tmp_name, FALSE, FALSE, FALSE); | |
906e58ca | 4219 | |
845b51d6 | 4220 | BFD_ASSERT (myh == NULL); |
906e58ca | 4221 | |
845b51d6 PB |
4222 | bh = NULL; |
4223 | val = globals->bx_glue_size; | |
4224 | _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner, | |
4225 | tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val, | |
4226 | NULL, TRUE, FALSE, &bh); | |
4227 | ||
4228 | myh = (struct elf_link_hash_entry *) bh; | |
4229 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
4230 | myh->forced_local = 1; | |
4231 | ||
4232 | s->size += ARM_BX_VENEER_SIZE; | |
4233 | globals->bx_glue_offset[reg] = globals->bx_glue_size | 2; | |
4234 | globals->bx_glue_size += ARM_BX_VENEER_SIZE; | |
4235 | } | |
4236 | ||
4237 | ||
c7b8f16e JB |
4238 | /* Add an entry to the code/data map for section SEC. */ |
4239 | ||
4240 | static void | |
4241 | elf32_arm_section_map_add (asection *sec, char type, bfd_vma vma) | |
4242 | { | |
4243 | struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec); | |
4244 | unsigned int newidx; | |
906e58ca | 4245 | |
c7b8f16e JB |
4246 | if (sec_data->map == NULL) |
4247 | { | |
4248 | sec_data->map = bfd_malloc (sizeof (elf32_arm_section_map)); | |
4249 | sec_data->mapcount = 0; | |
4250 | sec_data->mapsize = 1; | |
4251 | } | |
906e58ca | 4252 | |
c7b8f16e | 4253 | newidx = sec_data->mapcount++; |
906e58ca | 4254 | |
c7b8f16e JB |
4255 | if (sec_data->mapcount > sec_data->mapsize) |
4256 | { | |
4257 | sec_data->mapsize *= 2; | |
515ef31d NC |
4258 | sec_data->map = bfd_realloc_or_free (sec_data->map, sec_data->mapsize |
4259 | * sizeof (elf32_arm_section_map)); | |
4260 | } | |
4261 | ||
4262 | if (sec_data->map) | |
4263 | { | |
4264 | sec_data->map[newidx].vma = vma; | |
4265 | sec_data->map[newidx].type = type; | |
c7b8f16e | 4266 | } |
c7b8f16e JB |
4267 | } |
4268 | ||
4269 | ||
4270 | /* Record information about a VFP11 denorm-erratum veneer. Only ARM-mode | |
4271 | veneers are handled for now. */ | |
4272 | ||
4273 | static bfd_vma | |
4274 | record_vfp11_erratum_veneer (struct bfd_link_info *link_info, | |
4275 | elf32_vfp11_erratum_list *branch, | |
4276 | bfd *branch_bfd, | |
4277 | asection *branch_sec, | |
4278 | unsigned int offset) | |
4279 | { | |
4280 | asection *s; | |
4281 | struct elf32_arm_link_hash_table *hash_table; | |
4282 | char *tmp_name; | |
4283 | struct elf_link_hash_entry *myh; | |
4284 | struct bfd_link_hash_entry *bh; | |
4285 | bfd_vma val; | |
4286 | struct _arm_elf_section_data *sec_data; | |
4287 | int errcount; | |
4288 | elf32_vfp11_erratum_list *newerr; | |
906e58ca | 4289 | |
c7b8f16e | 4290 | hash_table = elf32_arm_hash_table (link_info); |
906e58ca | 4291 | |
c7b8f16e JB |
4292 | BFD_ASSERT (hash_table != NULL); |
4293 | BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL); | |
906e58ca | 4294 | |
c7b8f16e JB |
4295 | s = bfd_get_section_by_name |
4296 | (hash_table->bfd_of_glue_owner, VFP11_ERRATUM_VENEER_SECTION_NAME); | |
906e58ca | 4297 | |
c7b8f16e | 4298 | sec_data = elf32_arm_section_data (s); |
906e58ca | 4299 | |
c7b8f16e | 4300 | BFD_ASSERT (s != NULL); |
906e58ca | 4301 | |
c7b8f16e JB |
4302 | tmp_name = bfd_malloc ((bfd_size_type) strlen |
4303 | (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10); | |
906e58ca | 4304 | |
c7b8f16e | 4305 | BFD_ASSERT (tmp_name); |
906e58ca | 4306 | |
c7b8f16e JB |
4307 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME, |
4308 | hash_table->num_vfp11_fixes); | |
906e58ca | 4309 | |
c7b8f16e JB |
4310 | myh = elf_link_hash_lookup |
4311 | (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE); | |
906e58ca | 4312 | |
c7b8f16e | 4313 | BFD_ASSERT (myh == NULL); |
906e58ca | 4314 | |
c7b8f16e JB |
4315 | bh = NULL; |
4316 | val = hash_table->vfp11_erratum_glue_size; | |
4317 | _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, | |
4318 | tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val, | |
4319 | NULL, TRUE, FALSE, &bh); | |
4320 | ||
4321 | myh = (struct elf_link_hash_entry *) bh; | |
4322 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
4323 | myh->forced_local = 1; | |
4324 | ||
4325 | /* Link veneer back to calling location. */ | |
4326 | errcount = ++(sec_data->erratumcount); | |
4327 | newerr = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list)); | |
906e58ca | 4328 | |
c7b8f16e JB |
4329 | newerr->type = VFP11_ERRATUM_ARM_VENEER; |
4330 | newerr->vma = -1; | |
4331 | newerr->u.v.branch = branch; | |
4332 | newerr->u.v.id = hash_table->num_vfp11_fixes; | |
4333 | branch->u.b.veneer = newerr; | |
4334 | ||
4335 | newerr->next = sec_data->erratumlist; | |
4336 | sec_data->erratumlist = newerr; | |
4337 | ||
4338 | /* A symbol for the return from the veneer. */ | |
4339 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r", | |
4340 | hash_table->num_vfp11_fixes); | |
4341 | ||
4342 | myh = elf_link_hash_lookup | |
4343 | (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE); | |
906e58ca | 4344 | |
c7b8f16e JB |
4345 | if (myh != NULL) |
4346 | abort (); | |
4347 | ||
4348 | bh = NULL; | |
4349 | val = offset + 4; | |
4350 | _bfd_generic_link_add_one_symbol (link_info, branch_bfd, tmp_name, BSF_LOCAL, | |
4351 | branch_sec, val, NULL, TRUE, FALSE, &bh); | |
906e58ca | 4352 | |
c7b8f16e JB |
4353 | myh = (struct elf_link_hash_entry *) bh; |
4354 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
4355 | myh->forced_local = 1; | |
4356 | ||
4357 | free (tmp_name); | |
906e58ca | 4358 | |
c7b8f16e JB |
4359 | /* Generate a mapping symbol for the veneer section, and explicitly add an |
4360 | entry for that symbol to the code/data map for the section. */ | |
4361 | if (hash_table->vfp11_erratum_glue_size == 0) | |
4362 | { | |
4363 | bh = NULL; | |
4364 | /* FIXME: Creates an ARM symbol. Thumb mode will need attention if it | |
4365 | ever requires this erratum fix. */ | |
4366 | _bfd_generic_link_add_one_symbol (link_info, | |
4367 | hash_table->bfd_of_glue_owner, "$a", | |
4368 | BSF_LOCAL, s, 0, NULL, | |
4369 | TRUE, FALSE, &bh); | |
4370 | ||
4371 | myh = (struct elf_link_hash_entry *) bh; | |
4372 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
4373 | myh->forced_local = 1; | |
906e58ca | 4374 | |
c7b8f16e JB |
4375 | /* The elf32_arm_init_maps function only cares about symbols from input |
4376 | BFDs. We must make a note of this generated mapping symbol | |
4377 | ourselves so that code byteswapping works properly in | |
4378 | elf32_arm_write_section. */ | |
4379 | elf32_arm_section_map_add (s, 'a', 0); | |
4380 | } | |
906e58ca | 4381 | |
c7b8f16e JB |
4382 | s->size += VFP11_ERRATUM_VENEER_SIZE; |
4383 | hash_table->vfp11_erratum_glue_size += VFP11_ERRATUM_VENEER_SIZE; | |
4384 | hash_table->num_vfp11_fixes++; | |
906e58ca | 4385 | |
c7b8f16e JB |
4386 | /* The offset of the veneer. */ |
4387 | return val; | |
4388 | } | |
4389 | ||
8029a119 NC |
4390 | /* Note: we do not include the flag SEC_LINKER_CREATED, as that |
4391 | would prevent elf_link_input_bfd() from processing the contents | |
4392 | of the section. */ | |
4393 | #define ARM_GLUE_SECTION_FLAGS \ | |
4394 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_CODE | SEC_READONLY) | |
4395 | ||
4396 | /* Create a fake section for use by the ARM backend of the linker. */ | |
4397 | ||
4398 | static bfd_boolean | |
4399 | arm_make_glue_section (bfd * abfd, const char * name) | |
4400 | { | |
4401 | asection * sec; | |
4402 | ||
4403 | sec = bfd_get_section_by_name (abfd, name); | |
4404 | if (sec != NULL) | |
4405 | /* Already made. */ | |
4406 | return TRUE; | |
4407 | ||
4408 | sec = bfd_make_section_with_flags (abfd, name, ARM_GLUE_SECTION_FLAGS); | |
4409 | ||
4410 | if (sec == NULL | |
4411 | || !bfd_set_section_alignment (abfd, sec, 2)) | |
4412 | return FALSE; | |
4413 | ||
4414 | /* Set the gc mark to prevent the section from being removed by garbage | |
4415 | collection, despite the fact that no relocs refer to this section. */ | |
4416 | sec->gc_mark = 1; | |
4417 | ||
4418 | return TRUE; | |
4419 | } | |
4420 | ||
8afb0e02 NC |
4421 | /* Add the glue sections to ABFD. This function is called from the |
4422 | linker scripts in ld/emultempl/{armelf}.em. */ | |
9b485d32 | 4423 | |
b34976b6 | 4424 | bfd_boolean |
57e8b36a NC |
4425 | bfd_elf32_arm_add_glue_sections_to_bfd (bfd *abfd, |
4426 | struct bfd_link_info *info) | |
252b5132 | 4427 | { |
8afb0e02 NC |
4428 | /* If we are only performing a partial |
4429 | link do not bother adding the glue. */ | |
1049f94e | 4430 | if (info->relocatable) |
b34976b6 | 4431 | return TRUE; |
252b5132 | 4432 | |
8029a119 | 4433 | /* Linker stubs don't need glue. */ |
906e58ca NC |
4434 | if (!strcmp (abfd->filename, "linker stubs")) |
4435 | return TRUE; | |
4436 | ||
8029a119 NC |
4437 | return arm_make_glue_section (abfd, ARM2THUMB_GLUE_SECTION_NAME) |
4438 | && arm_make_glue_section (abfd, THUMB2ARM_GLUE_SECTION_NAME) | |
4439 | && arm_make_glue_section (abfd, VFP11_ERRATUM_VENEER_SECTION_NAME) | |
4440 | && arm_make_glue_section (abfd, ARM_BX_GLUE_SECTION_NAME); | |
8afb0e02 NC |
4441 | } |
4442 | ||
4443 | /* Select a BFD to be used to hold the sections used by the glue code. | |
4444 | This function is called from the linker scripts in ld/emultempl/ | |
8029a119 | 4445 | {armelf/pe}.em. */ |
8afb0e02 | 4446 | |
b34976b6 | 4447 | bfd_boolean |
57e8b36a | 4448 | bfd_elf32_arm_get_bfd_for_interworking (bfd *abfd, struct bfd_link_info *info) |
8afb0e02 NC |
4449 | { |
4450 | struct elf32_arm_link_hash_table *globals; | |
4451 | ||
4452 | /* If we are only performing a partial link | |
4453 | do not bother getting a bfd to hold the glue. */ | |
1049f94e | 4454 | if (info->relocatable) |
b34976b6 | 4455 | return TRUE; |
8afb0e02 | 4456 | |
b7693d02 DJ |
4457 | /* Make sure we don't attach the glue sections to a dynamic object. */ |
4458 | BFD_ASSERT (!(abfd->flags & DYNAMIC)); | |
4459 | ||
8afb0e02 NC |
4460 | globals = elf32_arm_hash_table (info); |
4461 | ||
4462 | BFD_ASSERT (globals != NULL); | |
4463 | ||
4464 | if (globals->bfd_of_glue_owner != NULL) | |
b34976b6 | 4465 | return TRUE; |
8afb0e02 | 4466 | |
252b5132 RH |
4467 | /* Save the bfd for later use. */ |
4468 | globals->bfd_of_glue_owner = abfd; | |
cedb70c5 | 4469 | |
b34976b6 | 4470 | return TRUE; |
252b5132 RH |
4471 | } |
4472 | ||
906e58ca NC |
4473 | static void |
4474 | check_use_blx (struct elf32_arm_link_hash_table *globals) | |
39b41c9c | 4475 | { |
104d59d1 JM |
4476 | if (bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, |
4477 | Tag_CPU_arch) > 2) | |
39b41c9c PB |
4478 | globals->use_blx = 1; |
4479 | } | |
4480 | ||
b34976b6 | 4481 | bfd_boolean |
57e8b36a | 4482 | bfd_elf32_arm_process_before_allocation (bfd *abfd, |
d504ffc8 | 4483 | struct bfd_link_info *link_info) |
252b5132 RH |
4484 | { |
4485 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 4486 | Elf_Internal_Rela *internal_relocs = NULL; |
252b5132 RH |
4487 | Elf_Internal_Rela *irel, *irelend; |
4488 | bfd_byte *contents = NULL; | |
252b5132 RH |
4489 | |
4490 | asection *sec; | |
4491 | struct elf32_arm_link_hash_table *globals; | |
4492 | ||
4493 | /* If we are only performing a partial link do not bother | |
4494 | to construct any glue. */ | |
1049f94e | 4495 | if (link_info->relocatable) |
b34976b6 | 4496 | return TRUE; |
252b5132 | 4497 | |
39ce1a6a NC |
4498 | /* Here we have a bfd that is to be included on the link. We have a |
4499 | hook to do reloc rummaging, before section sizes are nailed down. */ | |
252b5132 RH |
4500 | globals = elf32_arm_hash_table (link_info); |
4501 | ||
4502 | BFD_ASSERT (globals != NULL); | |
39ce1a6a NC |
4503 | |
4504 | check_use_blx (globals); | |
252b5132 | 4505 | |
d504ffc8 | 4506 | if (globals->byteswap_code && !bfd_big_endian (abfd)) |
e489d0ae | 4507 | { |
d003868e AM |
4508 | _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."), |
4509 | abfd); | |
e489d0ae PB |
4510 | return FALSE; |
4511 | } | |
f21f3fe0 | 4512 | |
39ce1a6a NC |
4513 | /* PR 5398: If we have not decided to include any loadable sections in |
4514 | the output then we will not have a glue owner bfd. This is OK, it | |
4515 | just means that there is nothing else for us to do here. */ | |
4516 | if (globals->bfd_of_glue_owner == NULL) | |
4517 | return TRUE; | |
4518 | ||
252b5132 RH |
4519 | /* Rummage around all the relocs and map the glue vectors. */ |
4520 | sec = abfd->sections; | |
4521 | ||
4522 | if (sec == NULL) | |
b34976b6 | 4523 | return TRUE; |
252b5132 RH |
4524 | |
4525 | for (; sec != NULL; sec = sec->next) | |
4526 | { | |
4527 | if (sec->reloc_count == 0) | |
4528 | continue; | |
4529 | ||
2f475487 AM |
4530 | if ((sec->flags & SEC_EXCLUDE) != 0) |
4531 | continue; | |
4532 | ||
0ffa91dd | 4533 | symtab_hdr = & elf_symtab_hdr (abfd); |
252b5132 | 4534 | |
9b485d32 | 4535 | /* Load the relocs. */ |
6cdc0ccc | 4536 | internal_relocs |
906e58ca | 4537 | = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, FALSE); |
252b5132 | 4538 | |
6cdc0ccc AM |
4539 | if (internal_relocs == NULL) |
4540 | goto error_return; | |
252b5132 | 4541 | |
6cdc0ccc AM |
4542 | irelend = internal_relocs + sec->reloc_count; |
4543 | for (irel = internal_relocs; irel < irelend; irel++) | |
252b5132 RH |
4544 | { |
4545 | long r_type; | |
4546 | unsigned long r_index; | |
252b5132 RH |
4547 | |
4548 | struct elf_link_hash_entry *h; | |
4549 | ||
4550 | r_type = ELF32_R_TYPE (irel->r_info); | |
4551 | r_index = ELF32_R_SYM (irel->r_info); | |
4552 | ||
9b485d32 | 4553 | /* These are the only relocation types we care about. */ |
ba96a88f | 4554 | if ( r_type != R_ARM_PC24 |
b7693d02 | 4555 | && r_type != R_ARM_PLT32 |
5b5bb741 | 4556 | && r_type != R_ARM_JUMP24 |
845b51d6 PB |
4557 | && r_type != R_ARM_THM_JUMP24 |
4558 | && (r_type != R_ARM_V4BX || globals->fix_v4bx < 2)) | |
252b5132 RH |
4559 | continue; |
4560 | ||
4561 | /* Get the section contents if we haven't done so already. */ | |
4562 | if (contents == NULL) | |
4563 | { | |
4564 | /* Get cached copy if it exists. */ | |
4565 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
4566 | contents = elf_section_data (sec)->this_hdr.contents; | |
4567 | else | |
4568 | { | |
4569 | /* Go get them off disk. */ | |
57e8b36a | 4570 | if (! bfd_malloc_and_get_section (abfd, sec, &contents)) |
252b5132 RH |
4571 | goto error_return; |
4572 | } | |
4573 | } | |
4574 | ||
845b51d6 PB |
4575 | if (r_type == R_ARM_V4BX) |
4576 | { | |
4577 | int reg; | |
4578 | ||
4579 | reg = bfd_get_32 (abfd, contents + irel->r_offset) & 0xf; | |
4580 | record_arm_bx_glue (link_info, reg); | |
4581 | continue; | |
4582 | } | |
4583 | ||
a7c10850 | 4584 | /* If the relocation is not against a symbol it cannot concern us. */ |
252b5132 RH |
4585 | h = NULL; |
4586 | ||
9b485d32 | 4587 | /* We don't care about local symbols. */ |
252b5132 RH |
4588 | if (r_index < symtab_hdr->sh_info) |
4589 | continue; | |
4590 | ||
9b485d32 | 4591 | /* This is an external symbol. */ |
252b5132 RH |
4592 | r_index -= symtab_hdr->sh_info; |
4593 | h = (struct elf_link_hash_entry *) | |
4594 | elf_sym_hashes (abfd)[r_index]; | |
4595 | ||
4596 | /* If the relocation is against a static symbol it must be within | |
4597 | the current section and so cannot be a cross ARM/Thumb relocation. */ | |
4598 | if (h == NULL) | |
4599 | continue; | |
4600 | ||
d504ffc8 DJ |
4601 | /* If the call will go through a PLT entry then we do not need |
4602 | glue. */ | |
4603 | if (globals->splt != NULL && h->plt.offset != (bfd_vma) -1) | |
b7693d02 DJ |
4604 | continue; |
4605 | ||
252b5132 RH |
4606 | switch (r_type) |
4607 | { | |
4608 | case R_ARM_PC24: | |
c6596c5e | 4609 | case R_ARM_PLT32: |
5b5bb741 | 4610 | case R_ARM_JUMP24: |
252b5132 | 4611 | /* This one is a call from arm code. We need to look up |
2f0ca46a | 4612 | the target of the call. If it is a thumb target, we |
252b5132 | 4613 | insert glue. */ |
906e58ca | 4614 | if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC |
39b41c9c | 4615 | && !(r_type == R_ARM_CALL && globals->use_blx)) |
252b5132 RH |
4616 | record_arm_to_thumb_glue (link_info, h); |
4617 | break; | |
4618 | ||
bd97cb95 | 4619 | case R_ARM_THM_JUMP24: |
f21f3fe0 | 4620 | /* This one is a call from thumb code. We look |
2f0ca46a | 4621 | up the target of the call. If it is not a thumb |
bcbdc74c | 4622 | target, we insert glue. */ |
bd97cb95 DJ |
4623 | if (ELF_ST_TYPE (h->type) != STT_ARM_TFUNC |
4624 | && !(globals->use_blx && r_type == R_ARM_THM_CALL) | |
5ab79981 | 4625 | && h->root.type != bfd_link_hash_undefweak) |
252b5132 RH |
4626 | record_thumb_to_arm_glue (link_info, h); |
4627 | break; | |
4628 | ||
4629 | default: | |
c6596c5e | 4630 | abort (); |
252b5132 RH |
4631 | } |
4632 | } | |
6cdc0ccc AM |
4633 | |
4634 | if (contents != NULL | |
4635 | && elf_section_data (sec)->this_hdr.contents != contents) | |
4636 | free (contents); | |
4637 | contents = NULL; | |
4638 | ||
4639 | if (internal_relocs != NULL | |
4640 | && elf_section_data (sec)->relocs != internal_relocs) | |
4641 | free (internal_relocs); | |
4642 | internal_relocs = NULL; | |
252b5132 RH |
4643 | } |
4644 | ||
b34976b6 | 4645 | return TRUE; |
9a5aca8c | 4646 | |
252b5132 | 4647 | error_return: |
6cdc0ccc AM |
4648 | if (contents != NULL |
4649 | && elf_section_data (sec)->this_hdr.contents != contents) | |
4650 | free (contents); | |
4651 | if (internal_relocs != NULL | |
4652 | && elf_section_data (sec)->relocs != internal_relocs) | |
4653 | free (internal_relocs); | |
9a5aca8c | 4654 | |
b34976b6 | 4655 | return FALSE; |
252b5132 | 4656 | } |
7e392df6 | 4657 | #endif |
252b5132 | 4658 | |
eb043451 | 4659 | |
c7b8f16e JB |
4660 | /* Initialise maps of ARM/Thumb/data for input BFDs. */ |
4661 | ||
4662 | void | |
4663 | bfd_elf32_arm_init_maps (bfd *abfd) | |
4664 | { | |
4665 | Elf_Internal_Sym *isymbuf; | |
4666 | Elf_Internal_Shdr *hdr; | |
4667 | unsigned int i, localsyms; | |
4668 | ||
af1f4419 NC |
4669 | /* PR 7093: Make sure that we are dealing with an arm elf binary. */ |
4670 | if (! is_arm_elf (abfd)) | |
4671 | return; | |
4672 | ||
c7b8f16e JB |
4673 | if ((abfd->flags & DYNAMIC) != 0) |
4674 | return; | |
4675 | ||
0ffa91dd | 4676 | hdr = & elf_symtab_hdr (abfd); |
c7b8f16e JB |
4677 | localsyms = hdr->sh_info; |
4678 | ||
4679 | /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field | |
4680 | should contain the number of local symbols, which should come before any | |
4681 | global symbols. Mapping symbols are always local. */ | |
4682 | isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, | |
4683 | NULL); | |
4684 | ||
4685 | /* No internal symbols read? Skip this BFD. */ | |
4686 | if (isymbuf == NULL) | |
4687 | return; | |
4688 | ||
4689 | for (i = 0; i < localsyms; i++) | |
4690 | { | |
4691 | Elf_Internal_Sym *isym = &isymbuf[i]; | |
4692 | asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
4693 | const char *name; | |
906e58ca | 4694 | |
c7b8f16e JB |
4695 | if (sec != NULL |
4696 | && ELF_ST_BIND (isym->st_info) == STB_LOCAL) | |
4697 | { | |
4698 | name = bfd_elf_string_from_elf_section (abfd, | |
4699 | hdr->sh_link, isym->st_name); | |
906e58ca | 4700 | |
c7b8f16e JB |
4701 | if (bfd_is_arm_special_symbol_name (name, |
4702 | BFD_ARM_SPECIAL_SYM_TYPE_MAP)) | |
4703 | elf32_arm_section_map_add (sec, name[1], isym->st_value); | |
4704 | } | |
4705 | } | |
4706 | } | |
4707 | ||
4708 | ||
4709 | void | |
4710 | bfd_elf32_arm_set_vfp11_fix (bfd *obfd, struct bfd_link_info *link_info) | |
4711 | { | |
4712 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); | |
104d59d1 | 4713 | obj_attribute *out_attr = elf_known_obj_attributes_proc (obfd); |
906e58ca | 4714 | |
c7b8f16e JB |
4715 | /* We assume that ARMv7+ does not need the VFP11 denorm erratum fix. */ |
4716 | if (out_attr[Tag_CPU_arch].i >= TAG_CPU_ARCH_V7) | |
4717 | { | |
4718 | switch (globals->vfp11_fix) | |
4719 | { | |
4720 | case BFD_ARM_VFP11_FIX_DEFAULT: | |
4721 | case BFD_ARM_VFP11_FIX_NONE: | |
4722 | globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE; | |
4723 | break; | |
906e58ca | 4724 | |
c7b8f16e JB |
4725 | default: |
4726 | /* Give a warning, but do as the user requests anyway. */ | |
4727 | (*_bfd_error_handler) (_("%B: warning: selected VFP11 erratum " | |
4728 | "workaround is not necessary for target architecture"), obfd); | |
4729 | } | |
4730 | } | |
4731 | else if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_DEFAULT) | |
4732 | /* For earlier architectures, we might need the workaround, but do not | |
4733 | enable it by default. If users is running with broken hardware, they | |
4734 | must enable the erratum fix explicitly. */ | |
4735 | globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE; | |
4736 | } | |
4737 | ||
4738 | ||
906e58ca NC |
4739 | enum bfd_arm_vfp11_pipe |
4740 | { | |
c7b8f16e JB |
4741 | VFP11_FMAC, |
4742 | VFP11_LS, | |
4743 | VFP11_DS, | |
4744 | VFP11_BAD | |
4745 | }; | |
4746 | ||
4747 | /* Return a VFP register number. This is encoded as RX:X for single-precision | |
4748 | registers, or X:RX for double-precision registers, where RX is the group of | |
4749 | four bits in the instruction encoding and X is the single extension bit. | |
4750 | RX and X fields are specified using their lowest (starting) bit. The return | |
4751 | value is: | |
4752 | ||
4753 | 0...31: single-precision registers s0...s31 | |
4754 | 32...63: double-precision registers d0...d31. | |
906e58ca | 4755 | |
c7b8f16e JB |
4756 | Although X should be zero for VFP11 (encoding d0...d15 only), we might |
4757 | encounter VFP3 instructions, so we allow the full range for DP registers. */ | |
906e58ca | 4758 | |
c7b8f16e JB |
4759 | static unsigned int |
4760 | bfd_arm_vfp11_regno (unsigned int insn, bfd_boolean is_double, unsigned int rx, | |
4761 | unsigned int x) | |
4762 | { | |
4763 | if (is_double) | |
4764 | return (((insn >> rx) & 0xf) | (((insn >> x) & 1) << 4)) + 32; | |
4765 | else | |
4766 | return (((insn >> rx) & 0xf) << 1) | ((insn >> x) & 1); | |
4767 | } | |
4768 | ||
4769 | /* Set bits in *WMASK according to a register number REG as encoded by | |
4770 | bfd_arm_vfp11_regno(). Ignore d16-d31. */ | |
4771 | ||
4772 | static void | |
4773 | bfd_arm_vfp11_write_mask (unsigned int *wmask, unsigned int reg) | |
4774 | { | |
4775 | if (reg < 32) | |
4776 | *wmask |= 1 << reg; | |
4777 | else if (reg < 48) | |
4778 | *wmask |= 3 << ((reg - 32) * 2); | |
4779 | } | |
4780 | ||
4781 | /* Return TRUE if WMASK overwrites anything in REGS. */ | |
4782 | ||
4783 | static bfd_boolean | |
4784 | bfd_arm_vfp11_antidependency (unsigned int wmask, int *regs, int numregs) | |
4785 | { | |
4786 | int i; | |
906e58ca | 4787 | |
c7b8f16e JB |
4788 | for (i = 0; i < numregs; i++) |
4789 | { | |
4790 | unsigned int reg = regs[i]; | |
4791 | ||
4792 | if (reg < 32 && (wmask & (1 << reg)) != 0) | |
4793 | return TRUE; | |
906e58ca | 4794 | |
c7b8f16e JB |
4795 | reg -= 32; |
4796 | ||
4797 | if (reg >= 16) | |
4798 | continue; | |
906e58ca | 4799 | |
c7b8f16e JB |
4800 | if ((wmask & (3 << (reg * 2))) != 0) |
4801 | return TRUE; | |
4802 | } | |
906e58ca | 4803 | |
c7b8f16e JB |
4804 | return FALSE; |
4805 | } | |
4806 | ||
4807 | /* In this function, we're interested in two things: finding input registers | |
4808 | for VFP data-processing instructions, and finding the set of registers which | |
4809 | arbitrary VFP instructions may write to. We use a 32-bit unsigned int to | |
4810 | hold the written set, so FLDM etc. are easy to deal with (we're only | |
4811 | interested in 32 SP registers or 16 dp registers, due to the VFP version | |
4812 | implemented by the chip in question). DP registers are marked by setting | |
4813 | both SP registers in the write mask). */ | |
4814 | ||
4815 | static enum bfd_arm_vfp11_pipe | |
4816 | bfd_arm_vfp11_insn_decode (unsigned int insn, unsigned int *destmask, int *regs, | |
4817 | int *numregs) | |
4818 | { | |
4819 | enum bfd_arm_vfp11_pipe pipe = VFP11_BAD; | |
4820 | bfd_boolean is_double = ((insn & 0xf00) == 0xb00) ? 1 : 0; | |
4821 | ||
4822 | if ((insn & 0x0f000e10) == 0x0e000a00) /* A data-processing insn. */ | |
4823 | { | |
4824 | unsigned int pqrs; | |
4825 | unsigned int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22); | |
4826 | unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5); | |
4827 | ||
4828 | pqrs = ((insn & 0x00800000) >> 20) | |
4829 | | ((insn & 0x00300000) >> 19) | |
4830 | | ((insn & 0x00000040) >> 6); | |
4831 | ||
4832 | switch (pqrs) | |
4833 | { | |
4834 | case 0: /* fmac[sd]. */ | |
4835 | case 1: /* fnmac[sd]. */ | |
4836 | case 2: /* fmsc[sd]. */ | |
4837 | case 3: /* fnmsc[sd]. */ | |
4838 | pipe = VFP11_FMAC; | |
4839 | bfd_arm_vfp11_write_mask (destmask, fd); | |
4840 | regs[0] = fd; | |
4841 | regs[1] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */ | |
4842 | regs[2] = fm; | |
4843 | *numregs = 3; | |
4844 | break; | |
4845 | ||
4846 | case 4: /* fmul[sd]. */ | |
4847 | case 5: /* fnmul[sd]. */ | |
4848 | case 6: /* fadd[sd]. */ | |
4849 | case 7: /* fsub[sd]. */ | |
4850 | pipe = VFP11_FMAC; | |
4851 | goto vfp_binop; | |
4852 | ||
4853 | case 8: /* fdiv[sd]. */ | |
4854 | pipe = VFP11_DS; | |
4855 | vfp_binop: | |
4856 | bfd_arm_vfp11_write_mask (destmask, fd); | |
4857 | regs[0] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */ | |
4858 | regs[1] = fm; | |
4859 | *numregs = 2; | |
4860 | break; | |
4861 | ||
4862 | case 15: /* extended opcode. */ | |
4863 | { | |
4864 | unsigned int extn = ((insn >> 15) & 0x1e) | |
4865 | | ((insn >> 7) & 1); | |
4866 | ||
4867 | switch (extn) | |
4868 | { | |
4869 | case 0: /* fcpy[sd]. */ | |
4870 | case 1: /* fabs[sd]. */ | |
4871 | case 2: /* fneg[sd]. */ | |
4872 | case 8: /* fcmp[sd]. */ | |
4873 | case 9: /* fcmpe[sd]. */ | |
4874 | case 10: /* fcmpz[sd]. */ | |
4875 | case 11: /* fcmpez[sd]. */ | |
4876 | case 16: /* fuito[sd]. */ | |
4877 | case 17: /* fsito[sd]. */ | |
4878 | case 24: /* ftoui[sd]. */ | |
4879 | case 25: /* ftouiz[sd]. */ | |
4880 | case 26: /* ftosi[sd]. */ | |
4881 | case 27: /* ftosiz[sd]. */ | |
4882 | /* These instructions will not bounce due to underflow. */ | |
4883 | *numregs = 0; | |
4884 | pipe = VFP11_FMAC; | |
4885 | break; | |
4886 | ||
4887 | case 3: /* fsqrt[sd]. */ | |
4888 | /* fsqrt cannot underflow, but it can (perhaps) overwrite | |
4889 | registers to cause the erratum in previous instructions. */ | |
4890 | bfd_arm_vfp11_write_mask (destmask, fd); | |
4891 | pipe = VFP11_DS; | |
4892 | break; | |
4893 | ||
4894 | case 15: /* fcvt{ds,sd}. */ | |
4895 | { | |
4896 | int rnum = 0; | |
4897 | ||
4898 | bfd_arm_vfp11_write_mask (destmask, fd); | |
4899 | ||
4900 | /* Only FCVTSD can underflow. */ | |
4901 | if ((insn & 0x100) != 0) | |
4902 | regs[rnum++] = fm; | |
4903 | ||
4904 | *numregs = rnum; | |
4905 | ||
4906 | pipe = VFP11_FMAC; | |
4907 | } | |
4908 | break; | |
4909 | ||
4910 | default: | |
4911 | return VFP11_BAD; | |
4912 | } | |
4913 | } | |
4914 | break; | |
4915 | ||
4916 | default: | |
4917 | return VFP11_BAD; | |
4918 | } | |
4919 | } | |
4920 | /* Two-register transfer. */ | |
4921 | else if ((insn & 0x0fe00ed0) == 0x0c400a10) | |
4922 | { | |
4923 | unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5); | |
906e58ca | 4924 | |
c7b8f16e JB |
4925 | if ((insn & 0x100000) == 0) |
4926 | { | |
4927 | if (is_double) | |
4928 | bfd_arm_vfp11_write_mask (destmask, fm); | |
4929 | else | |
4930 | { | |
4931 | bfd_arm_vfp11_write_mask (destmask, fm); | |
4932 | bfd_arm_vfp11_write_mask (destmask, fm + 1); | |
4933 | } | |
4934 | } | |
4935 | ||
4936 | pipe = VFP11_LS; | |
4937 | } | |
4938 | else if ((insn & 0x0e100e00) == 0x0c100a00) /* A load insn. */ | |
4939 | { | |
4940 | int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22); | |
4941 | unsigned int puw = ((insn >> 21) & 0x1) | (((insn >> 23) & 3) << 1); | |
906e58ca | 4942 | |
c7b8f16e JB |
4943 | switch (puw) |
4944 | { | |
4945 | case 0: /* Two-reg transfer. We should catch these above. */ | |
4946 | abort (); | |
906e58ca | 4947 | |
c7b8f16e JB |
4948 | case 2: /* fldm[sdx]. */ |
4949 | case 3: | |
4950 | case 5: | |
4951 | { | |
4952 | unsigned int i, offset = insn & 0xff; | |
4953 | ||
4954 | if (is_double) | |
4955 | offset >>= 1; | |
4956 | ||
4957 | for (i = fd; i < fd + offset; i++) | |
4958 | bfd_arm_vfp11_write_mask (destmask, i); | |
4959 | } | |
4960 | break; | |
906e58ca | 4961 | |
c7b8f16e JB |
4962 | case 4: /* fld[sd]. */ |
4963 | case 6: | |
4964 | bfd_arm_vfp11_write_mask (destmask, fd); | |
4965 | break; | |
906e58ca | 4966 | |
c7b8f16e JB |
4967 | default: |
4968 | return VFP11_BAD; | |
4969 | } | |
4970 | ||
4971 | pipe = VFP11_LS; | |
4972 | } | |
4973 | /* Single-register transfer. Note L==0. */ | |
4974 | else if ((insn & 0x0f100e10) == 0x0e000a10) | |
4975 | { | |
4976 | unsigned int opcode = (insn >> 21) & 7; | |
4977 | unsigned int fn = bfd_arm_vfp11_regno (insn, is_double, 16, 7); | |
4978 | ||
4979 | switch (opcode) | |
4980 | { | |
4981 | case 0: /* fmsr/fmdlr. */ | |
4982 | case 1: /* fmdhr. */ | |
4983 | /* Mark fmdhr and fmdlr as writing to the whole of the DP | |
4984 | destination register. I don't know if this is exactly right, | |
4985 | but it is the conservative choice. */ | |
4986 | bfd_arm_vfp11_write_mask (destmask, fn); | |
4987 | break; | |
4988 | ||
4989 | case 7: /* fmxr. */ | |
4990 | break; | |
4991 | } | |
4992 | ||
4993 | pipe = VFP11_LS; | |
4994 | } | |
4995 | ||
4996 | return pipe; | |
4997 | } | |
4998 | ||
4999 | ||
5000 | static int elf32_arm_compare_mapping (const void * a, const void * b); | |
5001 | ||
5002 | ||
5003 | /* Look for potentially-troublesome code sequences which might trigger the | |
5004 | VFP11 denormal/antidependency erratum. See, e.g., the ARM1136 errata sheet | |
5005 | (available from ARM) for details of the erratum. A short version is | |
5006 | described in ld.texinfo. */ | |
5007 | ||
5008 | bfd_boolean | |
5009 | bfd_elf32_arm_vfp11_erratum_scan (bfd *abfd, struct bfd_link_info *link_info) | |
5010 | { | |
5011 | asection *sec; | |
5012 | bfd_byte *contents = NULL; | |
5013 | int state = 0; | |
5014 | int regs[3], numregs = 0; | |
5015 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); | |
5016 | int use_vector = (globals->vfp11_fix == BFD_ARM_VFP11_FIX_VECTOR); | |
906e58ca | 5017 | |
c7b8f16e JB |
5018 | /* We use a simple FSM to match troublesome VFP11 instruction sequences. |
5019 | The states transition as follows: | |
906e58ca | 5020 | |
c7b8f16e JB |
5021 | 0 -> 1 (vector) or 0 -> 2 (scalar) |
5022 | A VFP FMAC-pipeline instruction has been seen. Fill | |
5023 | regs[0]..regs[numregs-1] with its input operands. Remember this | |
5024 | instruction in 'first_fmac'. | |
5025 | ||
5026 | 1 -> 2 | |
5027 | Any instruction, except for a VFP instruction which overwrites | |
5028 | regs[*]. | |
906e58ca | 5029 | |
c7b8f16e JB |
5030 | 1 -> 3 [ -> 0 ] or |
5031 | 2 -> 3 [ -> 0 ] | |
5032 | A VFP instruction has been seen which overwrites any of regs[*]. | |
5033 | We must make a veneer! Reset state to 0 before examining next | |
5034 | instruction. | |
906e58ca | 5035 | |
c7b8f16e JB |
5036 | 2 -> 0 |
5037 | If we fail to match anything in state 2, reset to state 0 and reset | |
5038 | the instruction pointer to the instruction after 'first_fmac'. | |
5039 | ||
5040 | If the VFP11 vector mode is in use, there must be at least two unrelated | |
5041 | instructions between anti-dependent VFP11 instructions to properly avoid | |
906e58ca | 5042 | triggering the erratum, hence the use of the extra state 1. */ |
c7b8f16e JB |
5043 | |
5044 | /* If we are only performing a partial link do not bother | |
5045 | to construct any glue. */ | |
5046 | if (link_info->relocatable) | |
5047 | return TRUE; | |
5048 | ||
0ffa91dd NC |
5049 | /* Skip if this bfd does not correspond to an ELF image. */ |
5050 | if (! is_arm_elf (abfd)) | |
5051 | return TRUE; | |
906e58ca | 5052 | |
c7b8f16e JB |
5053 | /* We should have chosen a fix type by the time we get here. */ |
5054 | BFD_ASSERT (globals->vfp11_fix != BFD_ARM_VFP11_FIX_DEFAULT); | |
5055 | ||
5056 | if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_NONE) | |
5057 | return TRUE; | |
2e6030b9 | 5058 | |
33a7ffc2 JM |
5059 | /* Skip this BFD if it corresponds to an executable or dynamic object. */ |
5060 | if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0) | |
5061 | return TRUE; | |
5062 | ||
c7b8f16e JB |
5063 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
5064 | { | |
5065 | unsigned int i, span, first_fmac = 0, veneer_of_insn = 0; | |
5066 | struct _arm_elf_section_data *sec_data; | |
5067 | ||
5068 | /* If we don't have executable progbits, we're not interested in this | |
5069 | section. Also skip if section is to be excluded. */ | |
5070 | if (elf_section_type (sec) != SHT_PROGBITS | |
5071 | || (elf_section_flags (sec) & SHF_EXECINSTR) == 0 | |
5072 | || (sec->flags & SEC_EXCLUDE) != 0 | |
33a7ffc2 JM |
5073 | || sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS |
5074 | || sec->output_section == bfd_abs_section_ptr | |
c7b8f16e JB |
5075 | || strcmp (sec->name, VFP11_ERRATUM_VENEER_SECTION_NAME) == 0) |
5076 | continue; | |
5077 | ||
5078 | sec_data = elf32_arm_section_data (sec); | |
906e58ca | 5079 | |
c7b8f16e JB |
5080 | if (sec_data->mapcount == 0) |
5081 | continue; | |
906e58ca | 5082 | |
c7b8f16e JB |
5083 | if (elf_section_data (sec)->this_hdr.contents != NULL) |
5084 | contents = elf_section_data (sec)->this_hdr.contents; | |
5085 | else if (! bfd_malloc_and_get_section (abfd, sec, &contents)) | |
5086 | goto error_return; | |
5087 | ||
5088 | qsort (sec_data->map, sec_data->mapcount, sizeof (elf32_arm_section_map), | |
5089 | elf32_arm_compare_mapping); | |
5090 | ||
5091 | for (span = 0; span < sec_data->mapcount; span++) | |
5092 | { | |
5093 | unsigned int span_start = sec_data->map[span].vma; | |
5094 | unsigned int span_end = (span == sec_data->mapcount - 1) | |
5095 | ? sec->size : sec_data->map[span + 1].vma; | |
5096 | char span_type = sec_data->map[span].type; | |
906e58ca | 5097 | |
c7b8f16e JB |
5098 | /* FIXME: Only ARM mode is supported at present. We may need to |
5099 | support Thumb-2 mode also at some point. */ | |
5100 | if (span_type != 'a') | |
5101 | continue; | |
5102 | ||
5103 | for (i = span_start; i < span_end;) | |
5104 | { | |
5105 | unsigned int next_i = i + 4; | |
5106 | unsigned int insn = bfd_big_endian (abfd) | |
5107 | ? (contents[i] << 24) | |
5108 | | (contents[i + 1] << 16) | |
5109 | | (contents[i + 2] << 8) | |
5110 | | contents[i + 3] | |
5111 | : (contents[i + 3] << 24) | |
5112 | | (contents[i + 2] << 16) | |
5113 | | (contents[i + 1] << 8) | |
5114 | | contents[i]; | |
5115 | unsigned int writemask = 0; | |
5116 | enum bfd_arm_vfp11_pipe pipe; | |
5117 | ||
5118 | switch (state) | |
5119 | { | |
5120 | case 0: | |
5121 | pipe = bfd_arm_vfp11_insn_decode (insn, &writemask, regs, | |
5122 | &numregs); | |
5123 | /* I'm assuming the VFP11 erratum can trigger with denorm | |
5124 | operands on either the FMAC or the DS pipeline. This might | |
5125 | lead to slightly overenthusiastic veneer insertion. */ | |
5126 | if (pipe == VFP11_FMAC || pipe == VFP11_DS) | |
5127 | { | |
5128 | state = use_vector ? 1 : 2; | |
5129 | first_fmac = i; | |
5130 | veneer_of_insn = insn; | |
5131 | } | |
5132 | break; | |
5133 | ||
5134 | case 1: | |
5135 | { | |
5136 | int other_regs[3], other_numregs; | |
5137 | pipe = bfd_arm_vfp11_insn_decode (insn, &writemask, | |
5138 | other_regs, | |
5139 | &other_numregs); | |
5140 | if (pipe != VFP11_BAD | |
5141 | && bfd_arm_vfp11_antidependency (writemask, regs, | |
5142 | numregs)) | |
5143 | state = 3; | |
5144 | else | |
5145 | state = 2; | |
5146 | } | |
5147 | break; | |
5148 | ||
5149 | case 2: | |
5150 | { | |
5151 | int other_regs[3], other_numregs; | |
5152 | pipe = bfd_arm_vfp11_insn_decode (insn, &writemask, | |
5153 | other_regs, | |
5154 | &other_numregs); | |
5155 | if (pipe != VFP11_BAD | |
5156 | && bfd_arm_vfp11_antidependency (writemask, regs, | |
5157 | numregs)) | |
5158 | state = 3; | |
5159 | else | |
5160 | { | |
5161 | state = 0; | |
5162 | next_i = first_fmac + 4; | |
5163 | } | |
5164 | } | |
5165 | break; | |
5166 | ||
5167 | case 3: | |
5168 | abort (); /* Should be unreachable. */ | |
5169 | } | |
5170 | ||
5171 | if (state == 3) | |
5172 | { | |
5173 | elf32_vfp11_erratum_list *newerr | |
5174 | = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list)); | |
5175 | int errcount; | |
5176 | ||
5177 | errcount = ++(elf32_arm_section_data (sec)->erratumcount); | |
5178 | ||
5179 | newerr->u.b.vfp_insn = veneer_of_insn; | |
5180 | ||
5181 | switch (span_type) | |
5182 | { | |
5183 | case 'a': | |
5184 | newerr->type = VFP11_ERRATUM_BRANCH_TO_ARM_VENEER; | |
5185 | break; | |
906e58ca | 5186 | |
c7b8f16e JB |
5187 | default: |
5188 | abort (); | |
5189 | } | |
5190 | ||
5191 | record_vfp11_erratum_veneer (link_info, newerr, abfd, sec, | |
5192 | first_fmac); | |
5193 | ||
5194 | newerr->vma = -1; | |
5195 | ||
5196 | newerr->next = sec_data->erratumlist; | |
5197 | sec_data->erratumlist = newerr; | |
5198 | ||
5199 | state = 0; | |
5200 | } | |
5201 | ||
5202 | i = next_i; | |
5203 | } | |
5204 | } | |
906e58ca | 5205 | |
c7b8f16e JB |
5206 | if (contents != NULL |
5207 | && elf_section_data (sec)->this_hdr.contents != contents) | |
5208 | free (contents); | |
5209 | contents = NULL; | |
5210 | } | |
5211 | ||
5212 | return TRUE; | |
5213 | ||
5214 | error_return: | |
5215 | if (contents != NULL | |
5216 | && elf_section_data (sec)->this_hdr.contents != contents) | |
5217 | free (contents); | |
906e58ca | 5218 | |
c7b8f16e JB |
5219 | return FALSE; |
5220 | } | |
5221 | ||
5222 | /* Find virtual-memory addresses for VFP11 erratum veneers and return locations | |
5223 | after sections have been laid out, using specially-named symbols. */ | |
5224 | ||
5225 | void | |
5226 | bfd_elf32_arm_vfp11_fix_veneer_locations (bfd *abfd, | |
5227 | struct bfd_link_info *link_info) | |
5228 | { | |
5229 | asection *sec; | |
5230 | struct elf32_arm_link_hash_table *globals; | |
5231 | char *tmp_name; | |
906e58ca | 5232 | |
c7b8f16e JB |
5233 | if (link_info->relocatable) |
5234 | return; | |
2e6030b9 MS |
5235 | |
5236 | /* Skip if this bfd does not correspond to an ELF image. */ | |
0ffa91dd | 5237 | if (! is_arm_elf (abfd)) |
2e6030b9 MS |
5238 | return; |
5239 | ||
c7b8f16e | 5240 | globals = elf32_arm_hash_table (link_info); |
906e58ca | 5241 | |
c7b8f16e JB |
5242 | tmp_name = bfd_malloc ((bfd_size_type) strlen |
5243 | (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10); | |
5244 | ||
5245 | for (sec = abfd->sections; sec != NULL; sec = sec->next) | |
5246 | { | |
5247 | struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec); | |
5248 | elf32_vfp11_erratum_list *errnode = sec_data->erratumlist; | |
906e58ca | 5249 | |
c7b8f16e JB |
5250 | for (; errnode != NULL; errnode = errnode->next) |
5251 | { | |
5252 | struct elf_link_hash_entry *myh; | |
5253 | bfd_vma vma; | |
5254 | ||
5255 | switch (errnode->type) | |
5256 | { | |
5257 | case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER: | |
5258 | case VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER: | |
5259 | /* Find veneer symbol. */ | |
5260 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME, | |
5261 | errnode->u.b.veneer->u.v.id); | |
5262 | ||
5263 | myh = elf_link_hash_lookup | |
5264 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); | |
5265 | ||
5266 | if (myh == NULL) | |
5267 | (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer " | |
5268 | "`%s'"), abfd, tmp_name); | |
5269 | ||
5270 | vma = myh->root.u.def.section->output_section->vma | |
5271 | + myh->root.u.def.section->output_offset | |
5272 | + myh->root.u.def.value; | |
5273 | ||
5274 | errnode->u.b.veneer->vma = vma; | |
5275 | break; | |
5276 | ||
5277 | case VFP11_ERRATUM_ARM_VENEER: | |
5278 | case VFP11_ERRATUM_THUMB_VENEER: | |
5279 | /* Find return location. */ | |
5280 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r", | |
5281 | errnode->u.v.id); | |
5282 | ||
5283 | myh = elf_link_hash_lookup | |
5284 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); | |
5285 | ||
5286 | if (myh == NULL) | |
5287 | (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer " | |
5288 | "`%s'"), abfd, tmp_name); | |
5289 | ||
5290 | vma = myh->root.u.def.section->output_section->vma | |
5291 | + myh->root.u.def.section->output_offset | |
5292 | + myh->root.u.def.value; | |
5293 | ||
5294 | errnode->u.v.branch->vma = vma; | |
5295 | break; | |
906e58ca | 5296 | |
c7b8f16e JB |
5297 | default: |
5298 | abort (); | |
5299 | } | |
5300 | } | |
5301 | } | |
906e58ca | 5302 | |
c7b8f16e JB |
5303 | free (tmp_name); |
5304 | } | |
5305 | ||
5306 | ||
eb043451 PB |
5307 | /* Set target relocation values needed during linking. */ |
5308 | ||
5309 | void | |
bf21ed78 MS |
5310 | bfd_elf32_arm_set_target_relocs (struct bfd *output_bfd, |
5311 | struct bfd_link_info *link_info, | |
eb043451 | 5312 | int target1_is_rel, |
319850b4 | 5313 | char * target2_type, |
33bfe774 | 5314 | int fix_v4bx, |
c7b8f16e | 5315 | int use_blx, |
bf21ed78 | 5316 | bfd_arm_vfp11_fix vfp11_fix, |
a9dc9481 JM |
5317 | int no_enum_warn, int no_wchar_warn, |
5318 | int pic_veneer) | |
eb043451 PB |
5319 | { |
5320 | struct elf32_arm_link_hash_table *globals; | |
5321 | ||
5322 | globals = elf32_arm_hash_table (link_info); | |
5323 | ||
5324 | globals->target1_is_rel = target1_is_rel; | |
5325 | if (strcmp (target2_type, "rel") == 0) | |
5326 | globals->target2_reloc = R_ARM_REL32; | |
eeac373a PB |
5327 | else if (strcmp (target2_type, "abs") == 0) |
5328 | globals->target2_reloc = R_ARM_ABS32; | |
eb043451 PB |
5329 | else if (strcmp (target2_type, "got-rel") == 0) |
5330 | globals->target2_reloc = R_ARM_GOT_PREL; | |
5331 | else | |
5332 | { | |
5333 | _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."), | |
5334 | target2_type); | |
5335 | } | |
319850b4 | 5336 | globals->fix_v4bx = fix_v4bx; |
33bfe774 | 5337 | globals->use_blx |= use_blx; |
c7b8f16e | 5338 | globals->vfp11_fix = vfp11_fix; |
27e55c4d | 5339 | globals->pic_veneer = pic_veneer; |
bf21ed78 | 5340 | |
0ffa91dd NC |
5341 | BFD_ASSERT (is_arm_elf (output_bfd)); |
5342 | elf_arm_tdata (output_bfd)->no_enum_size_warning = no_enum_warn; | |
a9dc9481 | 5343 | elf_arm_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn; |
eb043451 | 5344 | } |
eb043451 | 5345 | |
12a0a0fd | 5346 | /* Replace the target offset of a Thumb bl or b.w instruction. */ |
252b5132 | 5347 | |
12a0a0fd PB |
5348 | static void |
5349 | insert_thumb_branch (bfd *abfd, long int offset, bfd_byte *insn) | |
5350 | { | |
5351 | bfd_vma upper; | |
5352 | bfd_vma lower; | |
5353 | int reloc_sign; | |
5354 | ||
5355 | BFD_ASSERT ((offset & 1) == 0); | |
5356 | ||
5357 | upper = bfd_get_16 (abfd, insn); | |
5358 | lower = bfd_get_16 (abfd, insn + 2); | |
5359 | reloc_sign = (offset < 0) ? 1 : 0; | |
5360 | upper = (upper & ~(bfd_vma) 0x7ff) | |
5361 | | ((offset >> 12) & 0x3ff) | |
5362 | | (reloc_sign << 10); | |
906e58ca | 5363 | lower = (lower & ~(bfd_vma) 0x2fff) |
12a0a0fd PB |
5364 | | (((!((offset >> 23) & 1)) ^ reloc_sign) << 13) |
5365 | | (((!((offset >> 22) & 1)) ^ reloc_sign) << 11) | |
5366 | | ((offset >> 1) & 0x7ff); | |
5367 | bfd_put_16 (abfd, upper, insn); | |
5368 | bfd_put_16 (abfd, lower, insn + 2); | |
252b5132 RH |
5369 | } |
5370 | ||
9b485d32 NC |
5371 | /* Thumb code calling an ARM function. */ |
5372 | ||
252b5132 | 5373 | static int |
57e8b36a NC |
5374 | elf32_thumb_to_arm_stub (struct bfd_link_info * info, |
5375 | const char * name, | |
5376 | bfd * input_bfd, | |
5377 | bfd * output_bfd, | |
5378 | asection * input_section, | |
5379 | bfd_byte * hit_data, | |
5380 | asection * sym_sec, | |
5381 | bfd_vma offset, | |
5382 | bfd_signed_vma addend, | |
f2a9dd69 DJ |
5383 | bfd_vma val, |
5384 | char **error_message) | |
252b5132 | 5385 | { |
bcbdc74c | 5386 | asection * s = 0; |
dc810e39 | 5387 | bfd_vma my_offset; |
252b5132 | 5388 | long int ret_offset; |
bcbdc74c NC |
5389 | struct elf_link_hash_entry * myh; |
5390 | struct elf32_arm_link_hash_table * globals; | |
252b5132 | 5391 | |
f2a9dd69 | 5392 | myh = find_thumb_glue (info, name, error_message); |
252b5132 | 5393 | if (myh == NULL) |
b34976b6 | 5394 | return FALSE; |
252b5132 RH |
5395 | |
5396 | globals = elf32_arm_hash_table (info); | |
5397 | ||
5398 | BFD_ASSERT (globals != NULL); | |
5399 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
5400 | ||
5401 | my_offset = myh->root.u.def.value; | |
5402 | ||
5403 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
5404 | THUMB2ARM_GLUE_SECTION_NAME); | |
5405 | ||
5406 | BFD_ASSERT (s != NULL); | |
5407 | BFD_ASSERT (s->contents != NULL); | |
5408 | BFD_ASSERT (s->output_section != NULL); | |
5409 | ||
5410 | if ((my_offset & 0x01) == 0x01) | |
5411 | { | |
5412 | if (sym_sec != NULL | |
5413 | && sym_sec->owner != NULL | |
5414 | && !INTERWORK_FLAG (sym_sec->owner)) | |
5415 | { | |
8f615d07 | 5416 | (*_bfd_error_handler) |
d003868e AM |
5417 | (_("%B(%s): warning: interworking not enabled.\n" |
5418 | " first occurrence: %B: thumb call to arm"), | |
5419 | sym_sec->owner, input_bfd, name); | |
252b5132 | 5420 | |
b34976b6 | 5421 | return FALSE; |
252b5132 RH |
5422 | } |
5423 | ||
5424 | --my_offset; | |
5425 | myh->root.u.def.value = my_offset; | |
5426 | ||
52ab56c2 PB |
5427 | put_thumb_insn (globals, output_bfd, (bfd_vma) t2a1_bx_pc_insn, |
5428 | s->contents + my_offset); | |
252b5132 | 5429 | |
52ab56c2 PB |
5430 | put_thumb_insn (globals, output_bfd, (bfd_vma) t2a2_noop_insn, |
5431 | s->contents + my_offset + 2); | |
252b5132 RH |
5432 | |
5433 | ret_offset = | |
9b485d32 NC |
5434 | /* Address of destination of the stub. */ |
5435 | ((bfd_signed_vma) val) | |
252b5132 | 5436 | - ((bfd_signed_vma) |
57e8b36a NC |
5437 | /* Offset from the start of the current section |
5438 | to the start of the stubs. */ | |
9b485d32 NC |
5439 | (s->output_offset |
5440 | /* Offset of the start of this stub from the start of the stubs. */ | |
5441 | + my_offset | |
5442 | /* Address of the start of the current section. */ | |
5443 | + s->output_section->vma) | |
5444 | /* The branch instruction is 4 bytes into the stub. */ | |
5445 | + 4 | |
5446 | /* ARM branches work from the pc of the instruction + 8. */ | |
5447 | + 8); | |
252b5132 | 5448 | |
52ab56c2 PB |
5449 | put_arm_insn (globals, output_bfd, |
5450 | (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF), | |
5451 | s->contents + my_offset + 4); | |
252b5132 RH |
5452 | } |
5453 | ||
5454 | BFD_ASSERT (my_offset <= globals->thumb_glue_size); | |
5455 | ||
427bfd90 NC |
5456 | /* Now go back and fix up the original BL insn to point to here. */ |
5457 | ret_offset = | |
5458 | /* Address of where the stub is located. */ | |
5459 | (s->output_section->vma + s->output_offset + my_offset) | |
5460 | /* Address of where the BL is located. */ | |
57e8b36a NC |
5461 | - (input_section->output_section->vma + input_section->output_offset |
5462 | + offset) | |
427bfd90 NC |
5463 | /* Addend in the relocation. */ |
5464 | - addend | |
5465 | /* Biassing for PC-relative addressing. */ | |
5466 | - 8; | |
252b5132 | 5467 | |
12a0a0fd | 5468 | insert_thumb_branch (input_bfd, ret_offset, hit_data - input_section->vma); |
252b5132 | 5469 | |
b34976b6 | 5470 | return TRUE; |
252b5132 RH |
5471 | } |
5472 | ||
a4fd1a8e | 5473 | /* Populate an Arm to Thumb stub. Returns the stub symbol. */ |
9b485d32 | 5474 | |
a4fd1a8e PB |
5475 | static struct elf_link_hash_entry * |
5476 | elf32_arm_create_thumb_stub (struct bfd_link_info * info, | |
5477 | const char * name, | |
5478 | bfd * input_bfd, | |
5479 | bfd * output_bfd, | |
5480 | asection * sym_sec, | |
5481 | bfd_vma val, | |
8029a119 NC |
5482 | asection * s, |
5483 | char ** error_message) | |
252b5132 | 5484 | { |
dc810e39 | 5485 | bfd_vma my_offset; |
252b5132 | 5486 | long int ret_offset; |
bcbdc74c NC |
5487 | struct elf_link_hash_entry * myh; |
5488 | struct elf32_arm_link_hash_table * globals; | |
252b5132 | 5489 | |
f2a9dd69 | 5490 | myh = find_arm_glue (info, name, error_message); |
252b5132 | 5491 | if (myh == NULL) |
a4fd1a8e | 5492 | return NULL; |
252b5132 RH |
5493 | |
5494 | globals = elf32_arm_hash_table (info); | |
5495 | ||
5496 | BFD_ASSERT (globals != NULL); | |
5497 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
5498 | ||
5499 | my_offset = myh->root.u.def.value; | |
252b5132 RH |
5500 | |
5501 | if ((my_offset & 0x01) == 0x01) | |
5502 | { | |
5503 | if (sym_sec != NULL | |
5504 | && sym_sec->owner != NULL | |
5505 | && !INTERWORK_FLAG (sym_sec->owner)) | |
5506 | { | |
8f615d07 | 5507 | (*_bfd_error_handler) |
d003868e AM |
5508 | (_("%B(%s): warning: interworking not enabled.\n" |
5509 | " first occurrence: %B: arm call to thumb"), | |
5510 | sym_sec->owner, input_bfd, name); | |
252b5132 | 5511 | } |
9b485d32 | 5512 | |
252b5132 RH |
5513 | --my_offset; |
5514 | myh->root.u.def.value = my_offset; | |
5515 | ||
27e55c4d PB |
5516 | if (info->shared || globals->root.is_relocatable_executable |
5517 | || globals->pic_veneer) | |
8f6277f5 PB |
5518 | { |
5519 | /* For relocatable objects we can't use absolute addresses, | |
5520 | so construct the address from a relative offset. */ | |
5521 | /* TODO: If the offset is small it's probably worth | |
5522 | constructing the address with adds. */ | |
52ab56c2 PB |
5523 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t1p_ldr_insn, |
5524 | s->contents + my_offset); | |
5525 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t2p_add_pc_insn, | |
5526 | s->contents + my_offset + 4); | |
5527 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t3p_bx_r12_insn, | |
5528 | s->contents + my_offset + 8); | |
8f6277f5 PB |
5529 | /* Adjust the offset by 4 for the position of the add, |
5530 | and 8 for the pipeline offset. */ | |
5531 | ret_offset = (val - (s->output_offset | |
5532 | + s->output_section->vma | |
5533 | + my_offset + 12)) | |
5534 | | 1; | |
5535 | bfd_put_32 (output_bfd, ret_offset, | |
5536 | s->contents + my_offset + 12); | |
5537 | } | |
26079076 PB |
5538 | else if (globals->use_blx) |
5539 | { | |
5540 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t1v5_ldr_insn, | |
5541 | s->contents + my_offset); | |
5542 | ||
5543 | /* It's a thumb address. Add the low order bit. */ | |
5544 | bfd_put_32 (output_bfd, val | a2t2v5_func_addr_insn, | |
5545 | s->contents + my_offset + 4); | |
5546 | } | |
8f6277f5 PB |
5547 | else |
5548 | { | |
52ab56c2 PB |
5549 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t1_ldr_insn, |
5550 | s->contents + my_offset); | |
252b5132 | 5551 | |
52ab56c2 PB |
5552 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t2_bx_r12_insn, |
5553 | s->contents + my_offset + 4); | |
252b5132 | 5554 | |
8f6277f5 PB |
5555 | /* It's a thumb address. Add the low order bit. */ |
5556 | bfd_put_32 (output_bfd, val | a2t3_func_addr_insn, | |
5557 | s->contents + my_offset + 8); | |
8029a119 NC |
5558 | |
5559 | my_offset += 12; | |
8f6277f5 | 5560 | } |
252b5132 RH |
5561 | } |
5562 | ||
5563 | BFD_ASSERT (my_offset <= globals->arm_glue_size); | |
5564 | ||
a4fd1a8e PB |
5565 | return myh; |
5566 | } | |
5567 | ||
5568 | /* Arm code calling a Thumb function. */ | |
5569 | ||
5570 | static int | |
5571 | elf32_arm_to_thumb_stub (struct bfd_link_info * info, | |
5572 | const char * name, | |
5573 | bfd * input_bfd, | |
5574 | bfd * output_bfd, | |
5575 | asection * input_section, | |
5576 | bfd_byte * hit_data, | |
5577 | asection * sym_sec, | |
5578 | bfd_vma offset, | |
5579 | bfd_signed_vma addend, | |
f2a9dd69 DJ |
5580 | bfd_vma val, |
5581 | char **error_message) | |
a4fd1a8e PB |
5582 | { |
5583 | unsigned long int tmp; | |
5584 | bfd_vma my_offset; | |
5585 | asection * s; | |
5586 | long int ret_offset; | |
5587 | struct elf_link_hash_entry * myh; | |
5588 | struct elf32_arm_link_hash_table * globals; | |
5589 | ||
5590 | globals = elf32_arm_hash_table (info); | |
5591 | ||
5592 | BFD_ASSERT (globals != NULL); | |
5593 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
5594 | ||
5595 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
5596 | ARM2THUMB_GLUE_SECTION_NAME); | |
5597 | BFD_ASSERT (s != NULL); | |
5598 | BFD_ASSERT (s->contents != NULL); | |
5599 | BFD_ASSERT (s->output_section != NULL); | |
5600 | ||
5601 | myh = elf32_arm_create_thumb_stub (info, name, input_bfd, output_bfd, | |
f2a9dd69 | 5602 | sym_sec, val, s, error_message); |
a4fd1a8e PB |
5603 | if (!myh) |
5604 | return FALSE; | |
5605 | ||
5606 | my_offset = myh->root.u.def.value; | |
252b5132 RH |
5607 | tmp = bfd_get_32 (input_bfd, hit_data); |
5608 | tmp = tmp & 0xFF000000; | |
5609 | ||
9b485d32 | 5610 | /* Somehow these are both 4 too far, so subtract 8. */ |
dc810e39 AM |
5611 | ret_offset = (s->output_offset |
5612 | + my_offset | |
5613 | + s->output_section->vma | |
5614 | - (input_section->output_offset | |
5615 | + input_section->output_section->vma | |
5616 | + offset + addend) | |
5617 | - 8); | |
9a5aca8c | 5618 | |
252b5132 RH |
5619 | tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF); |
5620 | ||
dc810e39 | 5621 | bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma); |
252b5132 | 5622 | |
b34976b6 | 5623 | return TRUE; |
252b5132 RH |
5624 | } |
5625 | ||
a4fd1a8e PB |
5626 | /* Populate Arm stub for an exported Thumb function. */ |
5627 | ||
5628 | static bfd_boolean | |
5629 | elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry *h, void * inf) | |
5630 | { | |
5631 | struct bfd_link_info * info = (struct bfd_link_info *) inf; | |
5632 | asection * s; | |
5633 | struct elf_link_hash_entry * myh; | |
5634 | struct elf32_arm_link_hash_entry *eh; | |
5635 | struct elf32_arm_link_hash_table * globals; | |
5636 | asection *sec; | |
5637 | bfd_vma val; | |
f2a9dd69 | 5638 | char *error_message; |
a4fd1a8e | 5639 | |
906e58ca | 5640 | eh = elf32_arm_hash_entry (h); |
a4fd1a8e PB |
5641 | /* Allocate stubs for exported Thumb functions on v4t. */ |
5642 | if (eh->export_glue == NULL) | |
5643 | return TRUE; | |
5644 | ||
5645 | globals = elf32_arm_hash_table (info); | |
5646 | ||
5647 | BFD_ASSERT (globals != NULL); | |
5648 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
5649 | ||
5650 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
5651 | ARM2THUMB_GLUE_SECTION_NAME); | |
5652 | BFD_ASSERT (s != NULL); | |
5653 | BFD_ASSERT (s->contents != NULL); | |
5654 | BFD_ASSERT (s->output_section != NULL); | |
5655 | ||
5656 | sec = eh->export_glue->root.u.def.section; | |
0eaedd0e PB |
5657 | |
5658 | BFD_ASSERT (sec->output_section != NULL); | |
5659 | ||
a4fd1a8e PB |
5660 | val = eh->export_glue->root.u.def.value + sec->output_offset |
5661 | + sec->output_section->vma; | |
8029a119 | 5662 | |
a4fd1a8e PB |
5663 | myh = elf32_arm_create_thumb_stub (info, h->root.root.string, |
5664 | h->root.u.def.section->owner, | |
f2a9dd69 DJ |
5665 | globals->obfd, sec, val, s, |
5666 | &error_message); | |
a4fd1a8e PB |
5667 | BFD_ASSERT (myh); |
5668 | return TRUE; | |
5669 | } | |
5670 | ||
845b51d6 PB |
5671 | /* Populate ARMv4 BX veneers. Returns the absolute adress of the veneer. */ |
5672 | ||
5673 | static bfd_vma | |
5674 | elf32_arm_bx_glue (struct bfd_link_info * info, int reg) | |
5675 | { | |
5676 | bfd_byte *p; | |
5677 | bfd_vma glue_addr; | |
5678 | asection *s; | |
5679 | struct elf32_arm_link_hash_table *globals; | |
5680 | ||
5681 | globals = elf32_arm_hash_table (info); | |
5682 | ||
5683 | BFD_ASSERT (globals != NULL); | |
5684 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
5685 | ||
5686 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
5687 | ARM_BX_GLUE_SECTION_NAME); | |
5688 | BFD_ASSERT (s != NULL); | |
5689 | BFD_ASSERT (s->contents != NULL); | |
5690 | BFD_ASSERT (s->output_section != NULL); | |
5691 | ||
5692 | BFD_ASSERT (globals->bx_glue_offset[reg] & 2); | |
5693 | ||
5694 | glue_addr = globals->bx_glue_offset[reg] & ~(bfd_vma)3; | |
5695 | ||
5696 | if ((globals->bx_glue_offset[reg] & 1) == 0) | |
5697 | { | |
5698 | p = s->contents + glue_addr; | |
5699 | bfd_put_32 (globals->obfd, armbx1_tst_insn + (reg << 16), p); | |
5700 | bfd_put_32 (globals->obfd, armbx2_moveq_insn + reg, p + 4); | |
5701 | bfd_put_32 (globals->obfd, armbx3_bx_insn + reg, p + 8); | |
5702 | globals->bx_glue_offset[reg] |= 1; | |
5703 | } | |
5704 | ||
5705 | return glue_addr + s->output_section->vma + s->output_offset; | |
5706 | } | |
5707 | ||
a4fd1a8e PB |
5708 | /* Generate Arm stubs for exported Thumb symbols. */ |
5709 | static void | |
906e58ca | 5710 | elf32_arm_begin_write_processing (bfd *abfd ATTRIBUTE_UNUSED, |
a4fd1a8e PB |
5711 | struct bfd_link_info *link_info) |
5712 | { | |
5713 | struct elf32_arm_link_hash_table * globals; | |
5714 | ||
8029a119 NC |
5715 | if (link_info == NULL) |
5716 | /* Ignore this if we are not called by the ELF backend linker. */ | |
a4fd1a8e PB |
5717 | return; |
5718 | ||
5719 | globals = elf32_arm_hash_table (link_info); | |
84c08195 PB |
5720 | /* If blx is available then exported Thumb symbols are OK and there is |
5721 | nothing to do. */ | |
a4fd1a8e PB |
5722 | if (globals->use_blx) |
5723 | return; | |
5724 | ||
5725 | elf_link_hash_traverse (&globals->root, elf32_arm_to_thumb_export_stub, | |
5726 | link_info); | |
5727 | } | |
5728 | ||
eb043451 PB |
5729 | /* Some relocations map to different relocations depending on the |
5730 | target. Return the real relocation. */ | |
8029a119 | 5731 | |
eb043451 PB |
5732 | static int |
5733 | arm_real_reloc_type (struct elf32_arm_link_hash_table * globals, | |
5734 | int r_type) | |
5735 | { | |
5736 | switch (r_type) | |
5737 | { | |
5738 | case R_ARM_TARGET1: | |
5739 | if (globals->target1_is_rel) | |
5740 | return R_ARM_REL32; | |
5741 | else | |
5742 | return R_ARM_ABS32; | |
5743 | ||
5744 | case R_ARM_TARGET2: | |
5745 | return globals->target2_reloc; | |
5746 | ||
5747 | default: | |
5748 | return r_type; | |
5749 | } | |
5750 | } | |
eb043451 | 5751 | |
ba93b8ac DJ |
5752 | /* Return the base VMA address which should be subtracted from real addresses |
5753 | when resolving @dtpoff relocation. | |
5754 | This is PT_TLS segment p_vaddr. */ | |
5755 | ||
5756 | static bfd_vma | |
5757 | dtpoff_base (struct bfd_link_info *info) | |
5758 | { | |
5759 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
5760 | if (elf_hash_table (info)->tls_sec == NULL) | |
5761 | return 0; | |
5762 | return elf_hash_table (info)->tls_sec->vma; | |
5763 | } | |
5764 | ||
5765 | /* Return the relocation value for @tpoff relocation | |
5766 | if STT_TLS virtual address is ADDRESS. */ | |
5767 | ||
5768 | static bfd_vma | |
5769 | tpoff (struct bfd_link_info *info, bfd_vma address) | |
5770 | { | |
5771 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
5772 | bfd_vma base; | |
5773 | ||
5774 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
5775 | if (htab->tls_sec == NULL) | |
5776 | return 0; | |
5777 | base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power); | |
5778 | return address - htab->tls_sec->vma + base; | |
5779 | } | |
5780 | ||
00a97672 RS |
5781 | /* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA. |
5782 | VALUE is the relocation value. */ | |
5783 | ||
5784 | static bfd_reloc_status_type | |
5785 | elf32_arm_abs12_reloc (bfd *abfd, void *data, bfd_vma value) | |
5786 | { | |
5787 | if (value > 0xfff) | |
5788 | return bfd_reloc_overflow; | |
5789 | ||
5790 | value |= bfd_get_32 (abfd, data) & 0xfffff000; | |
5791 | bfd_put_32 (abfd, value, data); | |
5792 | return bfd_reloc_ok; | |
5793 | } | |
5794 | ||
4962c51a MS |
5795 | /* For a given value of n, calculate the value of G_n as required to |
5796 | deal with group relocations. We return it in the form of an | |
5797 | encoded constant-and-rotation, together with the final residual. If n is | |
5798 | specified as less than zero, then final_residual is filled with the | |
5799 | input value and no further action is performed. */ | |
5800 | ||
5801 | static bfd_vma | |
5802 | calculate_group_reloc_mask (bfd_vma value, int n, bfd_vma *final_residual) | |
5803 | { | |
5804 | int current_n; | |
5805 | bfd_vma g_n; | |
5806 | bfd_vma encoded_g_n = 0; | |
5807 | bfd_vma residual = value; /* Also known as Y_n. */ | |
5808 | ||
5809 | for (current_n = 0; current_n <= n; current_n++) | |
5810 | { | |
5811 | int shift; | |
5812 | ||
5813 | /* Calculate which part of the value to mask. */ | |
5814 | if (residual == 0) | |
5815 | shift = 0; | |
5816 | else | |
5817 | { | |
5818 | int msb; | |
5819 | ||
5820 | /* Determine the most significant bit in the residual and | |
5821 | align the resulting value to a 2-bit boundary. */ | |
5822 | for (msb = 30; msb >= 0; msb -= 2) | |
5823 | if (residual & (3 << msb)) | |
5824 | break; | |
5825 | ||
5826 | /* The desired shift is now (msb - 6), or zero, whichever | |
5827 | is the greater. */ | |
5828 | shift = msb - 6; | |
5829 | if (shift < 0) | |
5830 | shift = 0; | |
5831 | } | |
5832 | ||
5833 | /* Calculate g_n in 32-bit as well as encoded constant+rotation form. */ | |
5834 | g_n = residual & (0xff << shift); | |
5835 | encoded_g_n = (g_n >> shift) | |
5836 | | ((g_n <= 0xff ? 0 : (32 - shift) / 2) << 8); | |
5837 | ||
5838 | /* Calculate the residual for the next time around. */ | |
5839 | residual &= ~g_n; | |
5840 | } | |
5841 | ||
5842 | *final_residual = residual; | |
5843 | ||
5844 | return encoded_g_n; | |
5845 | } | |
5846 | ||
5847 | /* Given an ARM instruction, determine whether it is an ADD or a SUB. | |
5848 | Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */ | |
906e58ca | 5849 | |
4962c51a | 5850 | static int |
906e58ca | 5851 | identify_add_or_sub (bfd_vma insn) |
4962c51a MS |
5852 | { |
5853 | int opcode = insn & 0x1e00000; | |
5854 | ||
5855 | if (opcode == 1 << 23) /* ADD */ | |
5856 | return 1; | |
5857 | ||
5858 | if (opcode == 1 << 22) /* SUB */ | |
5859 | return -1; | |
5860 | ||
5861 | return 0; | |
5862 | } | |
5863 | ||
252b5132 | 5864 | /* Perform a relocation as part of a final link. */ |
9b485d32 | 5865 | |
252b5132 | 5866 | static bfd_reloc_status_type |
57e8b36a NC |
5867 | elf32_arm_final_link_relocate (reloc_howto_type * howto, |
5868 | bfd * input_bfd, | |
5869 | bfd * output_bfd, | |
5870 | asection * input_section, | |
5871 | bfd_byte * contents, | |
5872 | Elf_Internal_Rela * rel, | |
5873 | bfd_vma value, | |
5874 | struct bfd_link_info * info, | |
5875 | asection * sym_sec, | |
5876 | const char * sym_name, | |
5877 | int sym_flags, | |
0945cdfd | 5878 | struct elf_link_hash_entry * h, |
f2a9dd69 | 5879 | bfd_boolean * unresolved_reloc_p, |
8029a119 | 5880 | char ** error_message) |
252b5132 RH |
5881 | { |
5882 | unsigned long r_type = howto->type; | |
5883 | unsigned long r_symndx; | |
5884 | bfd_byte * hit_data = contents + rel->r_offset; | |
5885 | bfd * dynobj = NULL; | |
5886 | Elf_Internal_Shdr * symtab_hdr; | |
5887 | struct elf_link_hash_entry ** sym_hashes; | |
5888 | bfd_vma * local_got_offsets; | |
5889 | asection * sgot = NULL; | |
5890 | asection * splt = NULL; | |
5891 | asection * sreloc = NULL; | |
252b5132 | 5892 | bfd_vma addend; |
ba96a88f NC |
5893 | bfd_signed_vma signed_addend; |
5894 | struct elf32_arm_link_hash_table * globals; | |
f21f3fe0 | 5895 | |
9c504268 PB |
5896 | globals = elf32_arm_hash_table (info); |
5897 | ||
0ffa91dd NC |
5898 | BFD_ASSERT (is_arm_elf (input_bfd)); |
5899 | ||
5900 | /* Some relocation types map to different relocations depending on the | |
9c504268 | 5901 | target. We pick the right one here. */ |
eb043451 PB |
5902 | r_type = arm_real_reloc_type (globals, r_type); |
5903 | if (r_type != howto->type) | |
5904 | howto = elf32_arm_howto_from_type (r_type); | |
9c504268 | 5905 | |
cac15327 NC |
5906 | /* If the start address has been set, then set the EF_ARM_HASENTRY |
5907 | flag. Setting this more than once is redundant, but the cost is | |
5908 | not too high, and it keeps the code simple. | |
99e4ae17 | 5909 | |
cac15327 NC |
5910 | The test is done here, rather than somewhere else, because the |
5911 | start address is only set just before the final link commences. | |
5912 | ||
5913 | Note - if the user deliberately sets a start address of 0, the | |
5914 | flag will not be set. */ | |
5915 | if (bfd_get_start_address (output_bfd) != 0) | |
5916 | elf_elfheader (output_bfd)->e_flags |= EF_ARM_HASENTRY; | |
99e4ae17 | 5917 | |
252b5132 RH |
5918 | dynobj = elf_hash_table (info)->dynobj; |
5919 | if (dynobj) | |
5920 | { | |
5921 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
5922 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
5923 | } | |
0ffa91dd | 5924 | symtab_hdr = & elf_symtab_hdr (input_bfd); |
252b5132 RH |
5925 | sym_hashes = elf_sym_hashes (input_bfd); |
5926 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
5927 | r_symndx = ELF32_R_SYM (rel->r_info); | |
5928 | ||
4e7fd91e | 5929 | if (globals->use_rel) |
ba96a88f | 5930 | { |
4e7fd91e PB |
5931 | addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask; |
5932 | ||
5933 | if (addend & ((howto->src_mask + 1) >> 1)) | |
5934 | { | |
5935 | signed_addend = -1; | |
5936 | signed_addend &= ~ howto->src_mask; | |
5937 | signed_addend |= addend; | |
5938 | } | |
5939 | else | |
5940 | signed_addend = addend; | |
ba96a88f NC |
5941 | } |
5942 | else | |
4e7fd91e | 5943 | addend = signed_addend = rel->r_addend; |
f21f3fe0 | 5944 | |
252b5132 RH |
5945 | switch (r_type) |
5946 | { | |
5947 | case R_ARM_NONE: | |
28a094c2 DJ |
5948 | /* We don't need to find a value for this symbol. It's just a |
5949 | marker. */ | |
5950 | *unresolved_reloc_p = FALSE; | |
252b5132 RH |
5951 | return bfd_reloc_ok; |
5952 | ||
00a97672 RS |
5953 | case R_ARM_ABS12: |
5954 | if (!globals->vxworks_p) | |
5955 | return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend); | |
5956 | ||
252b5132 RH |
5957 | case R_ARM_PC24: |
5958 | case R_ARM_ABS32: | |
bb224fc3 | 5959 | case R_ARM_ABS32_NOI: |
252b5132 | 5960 | case R_ARM_REL32: |
bb224fc3 | 5961 | case R_ARM_REL32_NOI: |
5b5bb741 PB |
5962 | case R_ARM_CALL: |
5963 | case R_ARM_JUMP24: | |
dfc5f959 | 5964 | case R_ARM_XPC25: |
eb043451 | 5965 | case R_ARM_PREL31: |
7359ea65 | 5966 | case R_ARM_PLT32: |
7359ea65 DJ |
5967 | /* Handle relocations which should use the PLT entry. ABS32/REL32 |
5968 | will use the symbol's value, which may point to a PLT entry, but we | |
5969 | don't need to handle that here. If we created a PLT entry, all | |
5970 | branches in this object should go to it. */ | |
bb224fc3 MS |
5971 | if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32 |
5972 | && r_type != R_ARM_ABS32_NOI && r_type != R_ARM_REL32_NOI) | |
7359ea65 | 5973 | && h != NULL |
c84cd8ee | 5974 | && splt != NULL |
7359ea65 DJ |
5975 | && h->plt.offset != (bfd_vma) -1) |
5976 | { | |
c84cd8ee DJ |
5977 | /* If we've created a .plt section, and assigned a PLT entry to |
5978 | this function, it should not be known to bind locally. If | |
5979 | it were, we would have cleared the PLT entry. */ | |
7359ea65 DJ |
5980 | BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info, h)); |
5981 | ||
5982 | value = (splt->output_section->vma | |
5983 | + splt->output_offset | |
5984 | + h->plt.offset); | |
0945cdfd | 5985 | *unresolved_reloc_p = FALSE; |
7359ea65 DJ |
5986 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
5987 | contents, rel->r_offset, value, | |
00a97672 | 5988 | rel->r_addend); |
7359ea65 DJ |
5989 | } |
5990 | ||
67687978 PB |
5991 | /* When generating a shared object or relocatable executable, these |
5992 | relocations are copied into the output file to be resolved at | |
5993 | run time. */ | |
5994 | if ((info->shared || globals->root.is_relocatable_executable) | |
7359ea65 | 5995 | && (input_section->flags & SEC_ALLOC) |
3348747a NS |
5996 | && !(elf32_arm_hash_table (info)->vxworks_p |
5997 | && strcmp (input_section->output_section->name, | |
5998 | ".tls_vars") == 0) | |
bb224fc3 | 5999 | && ((r_type != R_ARM_REL32 && r_type != R_ARM_REL32_NOI) |
ee06dc07 | 6000 | || !SYMBOL_CALLS_LOCAL (info, h)) |
7359ea65 DJ |
6001 | && (h == NULL |
6002 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6003 | || h->root.type != bfd_link_hash_undefweak) | |
6004 | && r_type != R_ARM_PC24 | |
5b5bb741 PB |
6005 | && r_type != R_ARM_CALL |
6006 | && r_type != R_ARM_JUMP24 | |
ee06dc07 | 6007 | && r_type != R_ARM_PREL31 |
7359ea65 | 6008 | && r_type != R_ARM_PLT32) |
252b5132 | 6009 | { |
947216bf AM |
6010 | Elf_Internal_Rela outrel; |
6011 | bfd_byte *loc; | |
b34976b6 | 6012 | bfd_boolean skip, relocate; |
f21f3fe0 | 6013 | |
0945cdfd DJ |
6014 | *unresolved_reloc_p = FALSE; |
6015 | ||
252b5132 RH |
6016 | if (sreloc == NULL) |
6017 | { | |
83bac4b0 NC |
6018 | sreloc = _bfd_elf_get_dynamic_reloc_section (input_bfd, input_section, |
6019 | ! globals->use_rel); | |
f21f3fe0 | 6020 | |
83bac4b0 | 6021 | if (sreloc == NULL) |
252b5132 | 6022 | return bfd_reloc_notsupported; |
252b5132 | 6023 | } |
f21f3fe0 | 6024 | |
b34976b6 AM |
6025 | skip = FALSE; |
6026 | relocate = FALSE; | |
f21f3fe0 | 6027 | |
00a97672 | 6028 | outrel.r_addend = addend; |
c629eae0 JJ |
6029 | outrel.r_offset = |
6030 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
6031 | rel->r_offset); | |
6032 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 6033 | skip = TRUE; |
0bb2d96a | 6034 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 6035 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
6036 | outrel.r_offset += (input_section->output_section->vma |
6037 | + input_section->output_offset); | |
f21f3fe0 | 6038 | |
252b5132 | 6039 | if (skip) |
0bb2d96a | 6040 | memset (&outrel, 0, sizeof outrel); |
5e681ec4 PB |
6041 | else if (h != NULL |
6042 | && h->dynindx != -1 | |
7359ea65 | 6043 | && (!info->shared |
5e681ec4 | 6044 | || !info->symbolic |
f5385ebf | 6045 | || !h->def_regular)) |
5e681ec4 | 6046 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
252b5132 RH |
6047 | else |
6048 | { | |
a16385dc MM |
6049 | int symbol; |
6050 | ||
5e681ec4 | 6051 | /* This symbol is local, or marked to become local. */ |
b7693d02 DJ |
6052 | if (sym_flags == STT_ARM_TFUNC) |
6053 | value |= 1; | |
a16385dc | 6054 | if (globals->symbian_p) |
6366ff1e | 6055 | { |
74541ad4 AM |
6056 | asection *osec; |
6057 | ||
6366ff1e MM |
6058 | /* On Symbian OS, the data segment and text segement |
6059 | can be relocated independently. Therefore, we | |
6060 | must indicate the segment to which this | |
6061 | relocation is relative. The BPABI allows us to | |
6062 | use any symbol in the right segment; we just use | |
6063 | the section symbol as it is convenient. (We | |
6064 | cannot use the symbol given by "h" directly as it | |
74541ad4 AM |
6065 | will not appear in the dynamic symbol table.) |
6066 | ||
6067 | Note that the dynamic linker ignores the section | |
6068 | symbol value, so we don't subtract osec->vma | |
6069 | from the emitted reloc addend. */ | |
10dbd1f3 | 6070 | if (sym_sec) |
74541ad4 | 6071 | osec = sym_sec->output_section; |
10dbd1f3 | 6072 | else |
74541ad4 AM |
6073 | osec = input_section->output_section; |
6074 | symbol = elf_section_data (osec)->dynindx; | |
6075 | if (symbol == 0) | |
6076 | { | |
6077 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
6078 | ||
6079 | if ((osec->flags & SEC_READONLY) == 0 | |
6080 | && htab->data_index_section != NULL) | |
6081 | osec = htab->data_index_section; | |
6082 | else | |
6083 | osec = htab->text_index_section; | |
6084 | symbol = elf_section_data (osec)->dynindx; | |
6085 | } | |
6366ff1e MM |
6086 | BFD_ASSERT (symbol != 0); |
6087 | } | |
a16385dc MM |
6088 | else |
6089 | /* On SVR4-ish systems, the dynamic loader cannot | |
6090 | relocate the text and data segments independently, | |
6091 | so the symbol does not matter. */ | |
6092 | symbol = 0; | |
6093 | outrel.r_info = ELF32_R_INFO (symbol, R_ARM_RELATIVE); | |
00a97672 RS |
6094 | if (globals->use_rel) |
6095 | relocate = TRUE; | |
6096 | else | |
6097 | outrel.r_addend += value; | |
252b5132 | 6098 | } |
f21f3fe0 | 6099 | |
947216bf | 6100 | loc = sreloc->contents; |
00a97672 RS |
6101 | loc += sreloc->reloc_count++ * RELOC_SIZE (globals); |
6102 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
9a5aca8c | 6103 | |
f21f3fe0 | 6104 | /* If this reloc is against an external symbol, we do not want to |
252b5132 | 6105 | fiddle with the addend. Otherwise, we need to include the symbol |
9b485d32 | 6106 | value so that it becomes an addend for the dynamic reloc. */ |
252b5132 RH |
6107 | if (! relocate) |
6108 | return bfd_reloc_ok; | |
9a5aca8c | 6109 | |
f21f3fe0 | 6110 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
252b5132 RH |
6111 | contents, rel->r_offset, value, |
6112 | (bfd_vma) 0); | |
6113 | } | |
6114 | else switch (r_type) | |
6115 | { | |
00a97672 RS |
6116 | case R_ARM_ABS12: |
6117 | return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend); | |
6118 | ||
dfc5f959 | 6119 | case R_ARM_XPC25: /* Arm BLX instruction. */ |
5b5bb741 PB |
6120 | case R_ARM_CALL: |
6121 | case R_ARM_JUMP24: | |
8029a119 | 6122 | case R_ARM_PC24: /* Arm B/BL instruction. */ |
7359ea65 | 6123 | case R_ARM_PLT32: |
906e58ca NC |
6124 | { |
6125 | bfd_vma from; | |
6126 | bfd_signed_vma branch_offset; | |
6127 | struct elf32_arm_stub_hash_entry *stub_entry = NULL; | |
6128 | ||
6129 | from = (input_section->output_section->vma | |
6130 | + input_section->output_offset | |
6131 | + rel->r_offset); | |
6132 | branch_offset = (bfd_signed_vma)(value - from); | |
6133 | ||
dfc5f959 | 6134 | if (r_type == R_ARM_XPC25) |
252b5132 | 6135 | { |
dfc5f959 NC |
6136 | /* Check for Arm calling Arm function. */ |
6137 | /* FIXME: Should we translate the instruction into a BL | |
6138 | instruction instead ? */ | |
6139 | if (sym_flags != STT_ARM_TFUNC) | |
d003868e AM |
6140 | (*_bfd_error_handler) |
6141 | (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."), | |
6142 | input_bfd, | |
6143 | h ? h->root.root.string : "(local)"); | |
dfc5f959 | 6144 | } |
906e58ca | 6145 | else if (r_type != R_ARM_CALL) |
dfc5f959 NC |
6146 | { |
6147 | /* Check for Arm calling Thumb function. */ | |
6148 | if (sym_flags == STT_ARM_TFUNC) | |
6149 | { | |
f2a9dd69 DJ |
6150 | if (elf32_arm_to_thumb_stub (info, sym_name, input_bfd, |
6151 | output_bfd, input_section, | |
6152 | hit_data, sym_sec, rel->r_offset, | |
6153 | signed_addend, value, | |
6154 | error_message)) | |
6155 | return bfd_reloc_ok; | |
6156 | else | |
6157 | return bfd_reloc_dangerous; | |
dfc5f959 | 6158 | } |
252b5132 | 6159 | } |
ba96a88f | 6160 | |
906e58ca | 6161 | /* Check if a stub has to be inserted because the |
8029a119 | 6162 | destination is too far or we are changing mode. */ |
906e58ca NC |
6163 | if (r_type == R_ARM_CALL) |
6164 | { | |
6165 | if (branch_offset > ARM_MAX_FWD_BRANCH_OFFSET | |
6166 | || branch_offset < ARM_MAX_BWD_BRANCH_OFFSET | |
6167 | || sym_flags == STT_ARM_TFUNC) | |
6168 | { | |
6169 | /* The target is out of reach, so redirect the | |
6170 | branch to the local stub for this function. */ | |
6171 | ||
6172 | stub_entry = elf32_arm_get_stub_entry (input_section, | |
6173 | sym_sec, h, | |
6174 | rel, globals); | |
6175 | if (stub_entry != NULL) | |
6176 | value = (stub_entry->stub_offset | |
6177 | + stub_entry->stub_sec->output_offset | |
6178 | + stub_entry->stub_sec->output_section->vma); | |
6179 | } | |
6180 | } | |
6181 | ||
dea514f5 PB |
6182 | /* The ARM ELF ABI says that this reloc is computed as: S - P + A |
6183 | where: | |
6184 | S is the address of the symbol in the relocation. | |
6185 | P is address of the instruction being relocated. | |
6186 | A is the addend (extracted from the instruction) in bytes. | |
6187 | ||
6188 | S is held in 'value'. | |
6189 | P is the base address of the section containing the | |
6190 | instruction plus the offset of the reloc into that | |
6191 | section, ie: | |
6192 | (input_section->output_section->vma + | |
6193 | input_section->output_offset + | |
6194 | rel->r_offset). | |
6195 | A is the addend, converted into bytes, ie: | |
6196 | (signed_addend * 4) | |
6197 | ||
6198 | Note: None of these operations have knowledge of the pipeline | |
6199 | size of the processor, thus it is up to the assembler to | |
6200 | encode this information into the addend. */ | |
6201 | value -= (input_section->output_section->vma | |
6202 | + input_section->output_offset); | |
6203 | value -= rel->r_offset; | |
4e7fd91e PB |
6204 | if (globals->use_rel) |
6205 | value += (signed_addend << howto->size); | |
6206 | else | |
6207 | /* RELA addends do not have to be adjusted by howto->size. */ | |
6208 | value += signed_addend; | |
23080146 | 6209 | |
dcb5e6e6 NC |
6210 | signed_addend = value; |
6211 | signed_addend >>= howto->rightshift; | |
9a5aca8c | 6212 | |
5ab79981 PB |
6213 | /* A branch to an undefined weak symbol is turned into a jump to |
6214 | the next instruction. */ | |
6215 | if (h && h->root.type == bfd_link_hash_undefweak) | |
6216 | { | |
6217 | value = (bfd_get_32 (input_bfd, hit_data) & 0xf0000000) | |
6218 | | 0x0affffff; | |
6219 | } | |
6220 | else | |
59f2c4e7 | 6221 | { |
9b485d32 | 6222 | /* Perform a signed range check. */ |
dcb5e6e6 | 6223 | if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1)) |
59f2c4e7 NC |
6224 | || signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1))) |
6225 | return bfd_reloc_overflow; | |
9a5aca8c | 6226 | |
5ab79981 | 6227 | addend = (value & 2); |
39b41c9c | 6228 | |
5ab79981 PB |
6229 | value = (signed_addend & howto->dst_mask) |
6230 | | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask)); | |
39b41c9c | 6231 | |
5ab79981 | 6232 | /* Set the H bit in the BLX instruction. */ |
39b41c9c | 6233 | if (sym_flags == STT_ARM_TFUNC) |
39b41c9c | 6234 | { |
5ab79981 PB |
6235 | if (addend) |
6236 | value |= (1 << 24); | |
6237 | else | |
6238 | value &= ~(bfd_vma)(1 << 24); | |
6239 | } | |
6240 | if (r_type == R_ARM_CALL) | |
6241 | { | |
6242 | /* Select the correct instruction (BL or BLX). */ | |
906e58ca | 6243 | /* Only if we are not handling a BL to a stub. In this |
8029a119 | 6244 | case, mode switching is performed by the stub. */ |
906e58ca | 6245 | if (sym_flags == STT_ARM_TFUNC && !stub_entry) |
5ab79981 PB |
6246 | value |= (1 << 28); |
6247 | else | |
6248 | { | |
6249 | value &= ~(bfd_vma)(1 << 28); | |
6250 | value |= (1 << 24); | |
6251 | } | |
39b41c9c PB |
6252 | } |
6253 | } | |
906e58ca | 6254 | } |
252b5132 | 6255 | break; |
f21f3fe0 | 6256 | |
252b5132 RH |
6257 | case R_ARM_ABS32: |
6258 | value += addend; | |
6259 | if (sym_flags == STT_ARM_TFUNC) | |
6260 | value |= 1; | |
6261 | break; | |
f21f3fe0 | 6262 | |
bb224fc3 MS |
6263 | case R_ARM_ABS32_NOI: |
6264 | value += addend; | |
6265 | break; | |
6266 | ||
252b5132 | 6267 | case R_ARM_REL32: |
a8bc6c78 PB |
6268 | value += addend; |
6269 | if (sym_flags == STT_ARM_TFUNC) | |
6270 | value |= 1; | |
252b5132 | 6271 | value -= (input_section->output_section->vma |
62efb346 | 6272 | + input_section->output_offset + rel->r_offset); |
252b5132 | 6273 | break; |
eb043451 | 6274 | |
bb224fc3 MS |
6275 | case R_ARM_REL32_NOI: |
6276 | value += addend; | |
6277 | value -= (input_section->output_section->vma | |
6278 | + input_section->output_offset + rel->r_offset); | |
6279 | break; | |
6280 | ||
eb043451 PB |
6281 | case R_ARM_PREL31: |
6282 | value -= (input_section->output_section->vma | |
6283 | + input_section->output_offset + rel->r_offset); | |
6284 | value += signed_addend; | |
6285 | if (! h || h->root.type != bfd_link_hash_undefweak) | |
6286 | { | |
8029a119 | 6287 | /* Check for overflow. */ |
eb043451 PB |
6288 | if ((value ^ (value >> 1)) & (1 << 30)) |
6289 | return bfd_reloc_overflow; | |
6290 | } | |
6291 | value &= 0x7fffffff; | |
6292 | value |= (bfd_get_32 (input_bfd, hit_data) & 0x80000000); | |
6293 | if (sym_flags == STT_ARM_TFUNC) | |
6294 | value |= 1; | |
6295 | break; | |
252b5132 | 6296 | } |
f21f3fe0 | 6297 | |
252b5132 RH |
6298 | bfd_put_32 (input_bfd, value, hit_data); |
6299 | return bfd_reloc_ok; | |
6300 | ||
6301 | case R_ARM_ABS8: | |
6302 | value += addend; | |
6303 | if ((long) value > 0x7f || (long) value < -0x80) | |
6304 | return bfd_reloc_overflow; | |
6305 | ||
6306 | bfd_put_8 (input_bfd, value, hit_data); | |
6307 | return bfd_reloc_ok; | |
6308 | ||
6309 | case R_ARM_ABS16: | |
6310 | value += addend; | |
6311 | ||
6312 | if ((long) value > 0x7fff || (long) value < -0x8000) | |
6313 | return bfd_reloc_overflow; | |
6314 | ||
6315 | bfd_put_16 (input_bfd, value, hit_data); | |
6316 | return bfd_reloc_ok; | |
6317 | ||
252b5132 | 6318 | case R_ARM_THM_ABS5: |
9b485d32 | 6319 | /* Support ldr and str instructions for the thumb. */ |
4e7fd91e PB |
6320 | if (globals->use_rel) |
6321 | { | |
6322 | /* Need to refetch addend. */ | |
6323 | addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask; | |
6324 | /* ??? Need to determine shift amount from operand size. */ | |
6325 | addend >>= howto->rightshift; | |
6326 | } | |
252b5132 RH |
6327 | value += addend; |
6328 | ||
6329 | /* ??? Isn't value unsigned? */ | |
6330 | if ((long) value > 0x1f || (long) value < -0x10) | |
6331 | return bfd_reloc_overflow; | |
6332 | ||
6333 | /* ??? Value needs to be properly shifted into place first. */ | |
6334 | value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f; | |
6335 | bfd_put_16 (input_bfd, value, hit_data); | |
6336 | return bfd_reloc_ok; | |
6337 | ||
2cab6cc3 MS |
6338 | case R_ARM_THM_ALU_PREL_11_0: |
6339 | /* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */ | |
6340 | { | |
6341 | bfd_vma insn; | |
6342 | bfd_signed_vma relocation; | |
6343 | ||
6344 | insn = (bfd_get_16 (input_bfd, hit_data) << 16) | |
6345 | | bfd_get_16 (input_bfd, hit_data + 2); | |
6346 | ||
6347 | if (globals->use_rel) | |
6348 | { | |
6349 | signed_addend = (insn & 0xff) | ((insn & 0x7000) >> 4) | |
6350 | | ((insn & (1 << 26)) >> 15); | |
6351 | if (insn & 0xf00000) | |
6352 | signed_addend = -signed_addend; | |
6353 | } | |
6354 | ||
6355 | relocation = value + signed_addend; | |
6356 | relocation -= (input_section->output_section->vma | |
6357 | + input_section->output_offset | |
6358 | + rel->r_offset); | |
6359 | ||
6360 | value = abs (relocation); | |
6361 | ||
6362 | if (value >= 0x1000) | |
6363 | return bfd_reloc_overflow; | |
6364 | ||
6365 | insn = (insn & 0xfb0f8f00) | (value & 0xff) | |
6366 | | ((value & 0x700) << 4) | |
6367 | | ((value & 0x800) << 15); | |
6368 | if (relocation < 0) | |
6369 | insn |= 0xa00000; | |
6370 | ||
6371 | bfd_put_16 (input_bfd, insn >> 16, hit_data); | |
6372 | bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2); | |
6373 | ||
6374 | return bfd_reloc_ok; | |
6375 | } | |
6376 | ||
6377 | case R_ARM_THM_PC12: | |
6378 | /* Corresponds to: ldr.w reg, [pc, #offset]. */ | |
6379 | { | |
6380 | bfd_vma insn; | |
6381 | bfd_signed_vma relocation; | |
6382 | ||
6383 | insn = (bfd_get_16 (input_bfd, hit_data) << 16) | |
6384 | | bfd_get_16 (input_bfd, hit_data + 2); | |
6385 | ||
6386 | if (globals->use_rel) | |
6387 | { | |
6388 | signed_addend = insn & 0xfff; | |
6389 | if (!(insn & (1 << 23))) | |
6390 | signed_addend = -signed_addend; | |
6391 | } | |
6392 | ||
6393 | relocation = value + signed_addend; | |
6394 | relocation -= (input_section->output_section->vma | |
6395 | + input_section->output_offset | |
6396 | + rel->r_offset); | |
6397 | ||
6398 | value = abs (relocation); | |
6399 | ||
6400 | if (value >= 0x1000) | |
6401 | return bfd_reloc_overflow; | |
6402 | ||
6403 | insn = (insn & 0xff7ff000) | value; | |
6404 | if (relocation >= 0) | |
6405 | insn |= (1 << 23); | |
6406 | ||
6407 | bfd_put_16 (input_bfd, insn >> 16, hit_data); | |
6408 | bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2); | |
6409 | ||
6410 | return bfd_reloc_ok; | |
6411 | } | |
6412 | ||
dfc5f959 | 6413 | case R_ARM_THM_XPC22: |
c19d1205 | 6414 | case R_ARM_THM_CALL: |
bd97cb95 | 6415 | case R_ARM_THM_JUMP24: |
dfc5f959 | 6416 | /* Thumb BL (branch long instruction). */ |
252b5132 | 6417 | { |
b34976b6 | 6418 | bfd_vma relocation; |
e95de063 | 6419 | bfd_vma reloc_sign; |
b34976b6 AM |
6420 | bfd_boolean overflow = FALSE; |
6421 | bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); | |
6422 | bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); | |
e95de063 MS |
6423 | bfd_signed_vma reloc_signed_max; |
6424 | bfd_signed_vma reloc_signed_min; | |
b34976b6 | 6425 | bfd_vma check; |
252b5132 | 6426 | bfd_signed_vma signed_check; |
e95de063 MS |
6427 | int bitsize; |
6428 | int thumb2 = using_thumb2 (globals); | |
252b5132 | 6429 | |
5ab79981 | 6430 | /* A branch to an undefined weak symbol is turned into a jump to |
19540007 JM |
6431 | the next instruction unless a PLT entry will be created. */ |
6432 | if (h && h->root.type == bfd_link_hash_undefweak | |
6433 | && !(splt != NULL && h->plt.offset != (bfd_vma) -1)) | |
5ab79981 PB |
6434 | { |
6435 | bfd_put_16 (input_bfd, 0xe000, hit_data); | |
6436 | bfd_put_16 (input_bfd, 0xbf00, hit_data + 2); | |
6437 | return bfd_reloc_ok; | |
6438 | } | |
6439 | ||
e95de063 MS |
6440 | /* Fetch the addend. We use the Thumb-2 encoding (backwards compatible |
6441 | with Thumb-1) involving the J1 and J2 bits. */ | |
4e7fd91e PB |
6442 | if (globals->use_rel) |
6443 | { | |
e95de063 MS |
6444 | bfd_vma s = (upper_insn & (1 << 10)) >> 10; |
6445 | bfd_vma upper = upper_insn & 0x3ff; | |
6446 | bfd_vma lower = lower_insn & 0x7ff; | |
6447 | bfd_vma j1 = (lower_insn & (1 << 13)) >> 13; | |
6448 | bfd_vma j2 = (lower_insn & (1 << 11)) >> 11; | |
6449 | bfd_vma i1 = j1 ^ s ? 0 : 1; | |
6450 | bfd_vma i2 = j2 ^ s ? 0 : 1; | |
6451 | ||
6452 | addend = (i1 << 23) | (i2 << 22) | (upper << 12) | (lower << 1); | |
6453 | /* Sign extend. */ | |
6454 | addend = (addend | ((s ? 0 : 1) << 24)) - (1 << 24); | |
6455 | ||
4e7fd91e PB |
6456 | signed_addend = addend; |
6457 | } | |
cb1afa5c | 6458 | |
dfc5f959 NC |
6459 | if (r_type == R_ARM_THM_XPC22) |
6460 | { | |
6461 | /* Check for Thumb to Thumb call. */ | |
6462 | /* FIXME: Should we translate the instruction into a BL | |
6463 | instruction instead ? */ | |
6464 | if (sym_flags == STT_ARM_TFUNC) | |
d003868e AM |
6465 | (*_bfd_error_handler) |
6466 | (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."), | |
6467 | input_bfd, | |
6468 | h ? h->root.root.string : "(local)"); | |
dfc5f959 NC |
6469 | } |
6470 | else | |
252b5132 | 6471 | { |
dfc5f959 NC |
6472 | /* If it is not a call to Thumb, assume call to Arm. |
6473 | If it is a call relative to a section name, then it is not a | |
b7693d02 DJ |
6474 | function call at all, but rather a long jump. Calls through |
6475 | the PLT do not require stubs. */ | |
6476 | if (sym_flags != STT_ARM_TFUNC && sym_flags != STT_SECTION | |
6477 | && (h == NULL || splt == NULL | |
6478 | || h->plt.offset == (bfd_vma) -1)) | |
dfc5f959 | 6479 | { |
bd97cb95 | 6480 | if (globals->use_blx && r_type == R_ARM_THM_CALL) |
39b41c9c PB |
6481 | { |
6482 | /* Convert BL to BLX. */ | |
6483 | lower_insn = (lower_insn & ~0x1000) | 0x0800; | |
6484 | } | |
8029a119 NC |
6485 | else if (r_type != R_ARM_THM_CALL) |
6486 | { | |
6487 | if (elf32_thumb_to_arm_stub | |
6488 | (info, sym_name, input_bfd, output_bfd, input_section, | |
6489 | hit_data, sym_sec, rel->r_offset, signed_addend, value, | |
6490 | error_message)) | |
6491 | return bfd_reloc_ok; | |
6492 | else | |
6493 | return bfd_reloc_dangerous; | |
6494 | } | |
da5938a2 | 6495 | } |
bd97cb95 DJ |
6496 | else if (sym_flags == STT_ARM_TFUNC && globals->use_blx |
6497 | && r_type == R_ARM_THM_CALL) | |
39b41c9c PB |
6498 | { |
6499 | /* Make sure this is a BL. */ | |
6500 | lower_insn |= 0x1800; | |
6501 | } | |
252b5132 | 6502 | } |
f21f3fe0 | 6503 | |
b7693d02 DJ |
6504 | /* Handle calls via the PLT. */ |
6505 | if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1) | |
6506 | { | |
6507 | value = (splt->output_section->vma | |
6508 | + splt->output_offset | |
6509 | + h->plt.offset); | |
bd97cb95 | 6510 | if (globals->use_blx && r_type == R_ARM_THM_CALL) |
33bfe774 JB |
6511 | { |
6512 | /* If the Thumb BLX instruction is available, convert the | |
6513 | BL to a BLX instruction to call the ARM-mode PLT entry. */ | |
39b41c9c | 6514 | lower_insn = (lower_insn & ~0x1000) | 0x0800; |
33bfe774 JB |
6515 | } |
6516 | else | |
6517 | /* Target the Thumb stub before the ARM PLT entry. */ | |
6518 | value -= PLT_THUMB_STUB_SIZE; | |
0945cdfd | 6519 | *unresolved_reloc_p = FALSE; |
b7693d02 DJ |
6520 | } |
6521 | ||
906e58ca NC |
6522 | if (r_type == R_ARM_THM_CALL) |
6523 | { | |
6524 | /* Check if a stub has to be inserted because the destination | |
8029a119 | 6525 | is too far. */ |
906e58ca NC |
6526 | bfd_vma from; |
6527 | bfd_signed_vma branch_offset; | |
6528 | struct elf32_arm_stub_hash_entry *stub_entry = NULL; | |
6529 | ||
6530 | from = (input_section->output_section->vma | |
6531 | + input_section->output_offset | |
6532 | + rel->r_offset); | |
6533 | branch_offset = (bfd_signed_vma)(value - from); | |
6534 | ||
6535 | if ((!thumb2 | |
6536 | && (branch_offset > THM_MAX_FWD_BRANCH_OFFSET | |
6537 | || (branch_offset < THM_MAX_BWD_BRANCH_OFFSET))) | |
6538 | || | |
6539 | (thumb2 | |
6540 | && (branch_offset > THM2_MAX_FWD_BRANCH_OFFSET | |
f4ac8484 DJ |
6541 | || (branch_offset < THM2_MAX_BWD_BRANCH_OFFSET))) |
6542 | || ((sym_flags != STT_ARM_TFUNC) && !globals->use_blx)) | |
906e58ca NC |
6543 | { |
6544 | /* The target is out of reach or we are changing modes, so | |
6545 | redirect the branch to the local stub for this | |
6546 | function. */ | |
6547 | stub_entry = elf32_arm_get_stub_entry (input_section, | |
6548 | sym_sec, h, | |
6549 | rel, globals); | |
6550 | if (stub_entry != NULL) | |
6551 | value = (stub_entry->stub_offset | |
6552 | + stub_entry->stub_sec->output_offset | |
6553 | + stub_entry->stub_sec->output_section->vma); | |
6554 | ||
f4ac8484 DJ |
6555 | /* If this call becomes a call to Arm, force BLX. */ |
6556 | if (globals->use_blx) | |
6557 | { | |
6558 | if ((stub_entry | |
6559 | && !arm_stub_is_thumb (stub_entry->stub_type)) | |
6560 | || (sym_flags != STT_ARM_TFUNC)) | |
6561 | lower_insn = (lower_insn & ~0x1000) | 0x0800; | |
6562 | } | |
906e58ca NC |
6563 | } |
6564 | } | |
6565 | ||
ba96a88f | 6566 | relocation = value + signed_addend; |
f21f3fe0 | 6567 | |
252b5132 | 6568 | relocation -= (input_section->output_section->vma |
ba96a88f NC |
6569 | + input_section->output_offset |
6570 | + rel->r_offset); | |
9a5aca8c | 6571 | |
252b5132 RH |
6572 | check = relocation >> howto->rightshift; |
6573 | ||
6574 | /* If this is a signed value, the rightshift just dropped | |
6575 | leading 1 bits (assuming twos complement). */ | |
6576 | if ((bfd_signed_vma) relocation >= 0) | |
6577 | signed_check = check; | |
6578 | else | |
6579 | signed_check = check | ~((bfd_vma) -1 >> howto->rightshift); | |
6580 | ||
e95de063 MS |
6581 | /* Calculate the permissable maximum and minimum values for |
6582 | this relocation according to whether we're relocating for | |
6583 | Thumb-2 or not. */ | |
6584 | bitsize = howto->bitsize; | |
6585 | if (!thumb2) | |
6586 | bitsize -= 2; | |
6587 | reloc_signed_max = ((1 << (bitsize - 1)) - 1) >> howto->rightshift; | |
6588 | reloc_signed_min = ~reloc_signed_max; | |
6589 | ||
252b5132 | 6590 | /* Assumes two's complement. */ |
ba96a88f | 6591 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) |
b34976b6 | 6592 | overflow = TRUE; |
252b5132 | 6593 | |
bd97cb95 | 6594 | if ((lower_insn & 0x5000) == 0x4000) |
c62e1cc3 NC |
6595 | /* For a BLX instruction, make sure that the relocation is rounded up |
6596 | to a word boundary. This follows the semantics of the instruction | |
6597 | which specifies that bit 1 of the target address will come from bit | |
6598 | 1 of the base address. */ | |
6599 | relocation = (relocation + 2) & ~ 3; | |
cb1afa5c | 6600 | |
e95de063 MS |
6601 | /* Put RELOCATION back into the insn. Assumes two's complement. |
6602 | We use the Thumb-2 encoding, which is safe even if dealing with | |
6603 | a Thumb-1 instruction by virtue of our overflow check above. */ | |
6604 | reloc_sign = (signed_check < 0) ? 1 : 0; | |
6605 | upper_insn = (upper_insn & ~(bfd_vma) 0x7ff) | |
6606 | | ((relocation >> 12) & 0x3ff) | |
6607 | | (reloc_sign << 10); | |
906e58ca | 6608 | lower_insn = (lower_insn & ~(bfd_vma) 0x2fff) |
e95de063 MS |
6609 | | (((!((relocation >> 23) & 1)) ^ reloc_sign) << 13) |
6610 | | (((!((relocation >> 22) & 1)) ^ reloc_sign) << 11) | |
6611 | | ((relocation >> 1) & 0x7ff); | |
c62e1cc3 | 6612 | |
252b5132 RH |
6613 | /* Put the relocated value back in the object file: */ |
6614 | bfd_put_16 (input_bfd, upper_insn, hit_data); | |
6615 | bfd_put_16 (input_bfd, lower_insn, hit_data + 2); | |
6616 | ||
6617 | return (overflow ? bfd_reloc_overflow : bfd_reloc_ok); | |
6618 | } | |
6619 | break; | |
6620 | ||
c19d1205 ZW |
6621 | case R_ARM_THM_JUMP19: |
6622 | /* Thumb32 conditional branch instruction. */ | |
6623 | { | |
6624 | bfd_vma relocation; | |
6625 | bfd_boolean overflow = FALSE; | |
6626 | bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); | |
6627 | bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); | |
a00a1f35 MS |
6628 | bfd_signed_vma reloc_signed_max = 0xffffe; |
6629 | bfd_signed_vma reloc_signed_min = -0x100000; | |
c19d1205 ZW |
6630 | bfd_signed_vma signed_check; |
6631 | ||
6632 | /* Need to refetch the addend, reconstruct the top three bits, | |
6633 | and squish the two 11 bit pieces together. */ | |
6634 | if (globals->use_rel) | |
6635 | { | |
6636 | bfd_vma S = (upper_insn & 0x0400) >> 10; | |
a00a1f35 | 6637 | bfd_vma upper = (upper_insn & 0x003f); |
c19d1205 ZW |
6638 | bfd_vma J1 = (lower_insn & 0x2000) >> 13; |
6639 | bfd_vma J2 = (lower_insn & 0x0800) >> 11; | |
6640 | bfd_vma lower = (lower_insn & 0x07ff); | |
6641 | ||
a00a1f35 MS |
6642 | upper |= J1 << 6; |
6643 | upper |= J2 << 7; | |
6644 | upper |= (!S) << 8; | |
c19d1205 ZW |
6645 | upper -= 0x0100; /* Sign extend. */ |
6646 | ||
6647 | addend = (upper << 12) | (lower << 1); | |
6648 | signed_addend = addend; | |
6649 | } | |
6650 | ||
bd97cb95 DJ |
6651 | /* Handle calls via the PLT. */ |
6652 | if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1) | |
6653 | { | |
6654 | value = (splt->output_section->vma | |
6655 | + splt->output_offset | |
6656 | + h->plt.offset); | |
6657 | /* Target the Thumb stub before the ARM PLT entry. */ | |
6658 | value -= PLT_THUMB_STUB_SIZE; | |
6659 | *unresolved_reloc_p = FALSE; | |
6660 | } | |
6661 | ||
c19d1205 ZW |
6662 | /* ??? Should handle interworking? GCC might someday try to |
6663 | use this for tail calls. */ | |
6664 | ||
6665 | relocation = value + signed_addend; | |
6666 | relocation -= (input_section->output_section->vma | |
6667 | + input_section->output_offset | |
6668 | + rel->r_offset); | |
a00a1f35 | 6669 | signed_check = (bfd_signed_vma) relocation; |
c19d1205 | 6670 | |
c19d1205 ZW |
6671 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) |
6672 | overflow = TRUE; | |
6673 | ||
6674 | /* Put RELOCATION back into the insn. */ | |
6675 | { | |
6676 | bfd_vma S = (relocation & 0x00100000) >> 20; | |
6677 | bfd_vma J2 = (relocation & 0x00080000) >> 19; | |
6678 | bfd_vma J1 = (relocation & 0x00040000) >> 18; | |
6679 | bfd_vma hi = (relocation & 0x0003f000) >> 12; | |
6680 | bfd_vma lo = (relocation & 0x00000ffe) >> 1; | |
6681 | ||
a00a1f35 | 6682 | upper_insn = (upper_insn & 0xfbc0) | (S << 10) | hi; |
c19d1205 ZW |
6683 | lower_insn = (lower_insn & 0xd000) | (J1 << 13) | (J2 << 11) | lo; |
6684 | } | |
6685 | ||
6686 | /* Put the relocated value back in the object file: */ | |
6687 | bfd_put_16 (input_bfd, upper_insn, hit_data); | |
6688 | bfd_put_16 (input_bfd, lower_insn, hit_data + 2); | |
6689 | ||
6690 | return (overflow ? bfd_reloc_overflow : bfd_reloc_ok); | |
6691 | } | |
6692 | ||
6693 | case R_ARM_THM_JUMP11: | |
6694 | case R_ARM_THM_JUMP8: | |
6695 | case R_ARM_THM_JUMP6: | |
51c5503b NC |
6696 | /* Thumb B (branch) instruction). */ |
6697 | { | |
6cf9e9fe | 6698 | bfd_signed_vma relocation; |
51c5503b NC |
6699 | bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1; |
6700 | bfd_signed_vma reloc_signed_min = ~ reloc_signed_max; | |
51c5503b NC |
6701 | bfd_signed_vma signed_check; |
6702 | ||
c19d1205 ZW |
6703 | /* CZB cannot jump backward. */ |
6704 | if (r_type == R_ARM_THM_JUMP6) | |
6705 | reloc_signed_min = 0; | |
6706 | ||
4e7fd91e | 6707 | if (globals->use_rel) |
6cf9e9fe | 6708 | { |
4e7fd91e PB |
6709 | /* Need to refetch addend. */ |
6710 | addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask; | |
6711 | if (addend & ((howto->src_mask + 1) >> 1)) | |
6712 | { | |
6713 | signed_addend = -1; | |
6714 | signed_addend &= ~ howto->src_mask; | |
6715 | signed_addend |= addend; | |
6716 | } | |
6717 | else | |
6718 | signed_addend = addend; | |
6719 | /* The value in the insn has been right shifted. We need to | |
6720 | undo this, so that we can perform the address calculation | |
6721 | in terms of bytes. */ | |
6722 | signed_addend <<= howto->rightshift; | |
6cf9e9fe | 6723 | } |
6cf9e9fe | 6724 | relocation = value + signed_addend; |
51c5503b NC |
6725 | |
6726 | relocation -= (input_section->output_section->vma | |
6727 | + input_section->output_offset | |
6728 | + rel->r_offset); | |
6729 | ||
6cf9e9fe NC |
6730 | relocation >>= howto->rightshift; |
6731 | signed_check = relocation; | |
c19d1205 ZW |
6732 | |
6733 | if (r_type == R_ARM_THM_JUMP6) | |
6734 | relocation = ((relocation & 0x0020) << 4) | ((relocation & 0x001f) << 3); | |
6735 | else | |
6736 | relocation &= howto->dst_mask; | |
51c5503b | 6737 | relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask)); |
cedb70c5 | 6738 | |
51c5503b NC |
6739 | bfd_put_16 (input_bfd, relocation, hit_data); |
6740 | ||
6741 | /* Assumes two's complement. */ | |
6742 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) | |
6743 | return bfd_reloc_overflow; | |
6744 | ||
6745 | return bfd_reloc_ok; | |
6746 | } | |
cedb70c5 | 6747 | |
8375c36b PB |
6748 | case R_ARM_ALU_PCREL7_0: |
6749 | case R_ARM_ALU_PCREL15_8: | |
6750 | case R_ARM_ALU_PCREL23_15: | |
6751 | { | |
6752 | bfd_vma insn; | |
6753 | bfd_vma relocation; | |
6754 | ||
6755 | insn = bfd_get_32 (input_bfd, hit_data); | |
4e7fd91e PB |
6756 | if (globals->use_rel) |
6757 | { | |
6758 | /* Extract the addend. */ | |
6759 | addend = (insn & 0xff) << ((insn & 0xf00) >> 7); | |
6760 | signed_addend = addend; | |
6761 | } | |
8375c36b PB |
6762 | relocation = value + signed_addend; |
6763 | ||
6764 | relocation -= (input_section->output_section->vma | |
6765 | + input_section->output_offset | |
6766 | + rel->r_offset); | |
6767 | insn = (insn & ~0xfff) | |
6768 | | ((howto->bitpos << 7) & 0xf00) | |
6769 | | ((relocation >> howto->bitpos) & 0xff); | |
6770 | bfd_put_32 (input_bfd, value, hit_data); | |
6771 | } | |
6772 | return bfd_reloc_ok; | |
6773 | ||
252b5132 RH |
6774 | case R_ARM_GNU_VTINHERIT: |
6775 | case R_ARM_GNU_VTENTRY: | |
6776 | return bfd_reloc_ok; | |
6777 | ||
c19d1205 | 6778 | case R_ARM_GOTOFF32: |
252b5132 RH |
6779 | /* Relocation is relative to the start of the |
6780 | global offset table. */ | |
6781 | ||
6782 | BFD_ASSERT (sgot != NULL); | |
6783 | if (sgot == NULL) | |
6784 | return bfd_reloc_notsupported; | |
9a5aca8c | 6785 | |
cedb70c5 | 6786 | /* If we are addressing a Thumb function, we need to adjust the |
ee29b9fb RE |
6787 | address by one, so that attempts to call the function pointer will |
6788 | correctly interpret it as Thumb code. */ | |
6789 | if (sym_flags == STT_ARM_TFUNC) | |
6790 | value += 1; | |
6791 | ||
252b5132 RH |
6792 | /* Note that sgot->output_offset is not involved in this |
6793 | calculation. We always want the start of .got. If we | |
6794 | define _GLOBAL_OFFSET_TABLE in a different way, as is | |
6795 | permitted by the ABI, we might have to change this | |
9b485d32 | 6796 | calculation. */ |
252b5132 | 6797 | value -= sgot->output_section->vma; |
f21f3fe0 | 6798 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 | 6799 | contents, rel->r_offset, value, |
00a97672 | 6800 | rel->r_addend); |
252b5132 RH |
6801 | |
6802 | case R_ARM_GOTPC: | |
a7c10850 | 6803 | /* Use global offset table as symbol value. */ |
252b5132 | 6804 | BFD_ASSERT (sgot != NULL); |
f21f3fe0 | 6805 | |
252b5132 RH |
6806 | if (sgot == NULL) |
6807 | return bfd_reloc_notsupported; | |
6808 | ||
0945cdfd | 6809 | *unresolved_reloc_p = FALSE; |
252b5132 | 6810 | value = sgot->output_section->vma; |
f21f3fe0 | 6811 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 | 6812 | contents, rel->r_offset, value, |
00a97672 | 6813 | rel->r_addend); |
f21f3fe0 | 6814 | |
252b5132 | 6815 | case R_ARM_GOT32: |
eb043451 | 6816 | case R_ARM_GOT_PREL: |
252b5132 | 6817 | /* Relocation is to the entry for this symbol in the |
9b485d32 | 6818 | global offset table. */ |
252b5132 RH |
6819 | if (sgot == NULL) |
6820 | return bfd_reloc_notsupported; | |
f21f3fe0 | 6821 | |
252b5132 RH |
6822 | if (h != NULL) |
6823 | { | |
6824 | bfd_vma off; | |
5e681ec4 | 6825 | bfd_boolean dyn; |
f21f3fe0 | 6826 | |
252b5132 RH |
6827 | off = h->got.offset; |
6828 | BFD_ASSERT (off != (bfd_vma) -1); | |
5e681ec4 | 6829 | dyn = globals->root.dynamic_sections_created; |
f21f3fe0 | 6830 | |
5e681ec4 | 6831 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
50d6c878 | 6832 | || (info->shared |
5e681ec4 PB |
6833 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
6834 | || (ELF_ST_VISIBILITY (h->other) | |
6835 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
6836 | { |
6837 | /* This is actually a static link, or it is a -Bsymbolic link | |
6838 | and the symbol is defined locally. We must initialize this | |
6839 | entry in the global offset table. Since the offset must | |
6840 | always be a multiple of 4, we use the least significant bit | |
6841 | to record whether we have initialized it already. | |
f21f3fe0 | 6842 | |
00a97672 | 6843 | When doing a dynamic link, we create a .rel(a).got relocation |
f21f3fe0 | 6844 | entry to initialize the value. This is done in the |
9b485d32 | 6845 | finish_dynamic_symbol routine. */ |
252b5132 RH |
6846 | if ((off & 1) != 0) |
6847 | off &= ~1; | |
6848 | else | |
6849 | { | |
ee29b9fb RE |
6850 | /* If we are addressing a Thumb function, we need to |
6851 | adjust the address by one, so that attempts to | |
6852 | call the function pointer will correctly | |
6853 | interpret it as Thumb code. */ | |
6854 | if (sym_flags == STT_ARM_TFUNC) | |
6855 | value |= 1; | |
6856 | ||
252b5132 RH |
6857 | bfd_put_32 (output_bfd, value, sgot->contents + off); |
6858 | h->got.offset |= 1; | |
6859 | } | |
6860 | } | |
0945cdfd DJ |
6861 | else |
6862 | *unresolved_reloc_p = FALSE; | |
f21f3fe0 | 6863 | |
252b5132 RH |
6864 | value = sgot->output_offset + off; |
6865 | } | |
6866 | else | |
6867 | { | |
6868 | bfd_vma off; | |
f21f3fe0 | 6869 | |
252b5132 RH |
6870 | BFD_ASSERT (local_got_offsets != NULL && |
6871 | local_got_offsets[r_symndx] != (bfd_vma) -1); | |
f21f3fe0 | 6872 | |
252b5132 | 6873 | off = local_got_offsets[r_symndx]; |
f21f3fe0 | 6874 | |
252b5132 RH |
6875 | /* The offset must always be a multiple of 4. We use the |
6876 | least significant bit to record whether we have already | |
9b485d32 | 6877 | generated the necessary reloc. */ |
252b5132 RH |
6878 | if ((off & 1) != 0) |
6879 | off &= ~1; | |
6880 | else | |
6881 | { | |
b7693d02 DJ |
6882 | /* If we are addressing a Thumb function, we need to |
6883 | adjust the address by one, so that attempts to | |
6884 | call the function pointer will correctly | |
6885 | interpret it as Thumb code. */ | |
6886 | if (sym_flags == STT_ARM_TFUNC) | |
6887 | value |= 1; | |
6888 | ||
00a97672 RS |
6889 | if (globals->use_rel) |
6890 | bfd_put_32 (output_bfd, value, sgot->contents + off); | |
f21f3fe0 | 6891 | |
252b5132 RH |
6892 | if (info->shared) |
6893 | { | |
6894 | asection * srelgot; | |
947216bf AM |
6895 | Elf_Internal_Rela outrel; |
6896 | bfd_byte *loc; | |
f21f3fe0 | 6897 | |
00a97672 RS |
6898 | srelgot = (bfd_get_section_by_name |
6899 | (dynobj, RELOC_SECTION (globals, ".got"))); | |
252b5132 | 6900 | BFD_ASSERT (srelgot != NULL); |
f21f3fe0 | 6901 | |
00a97672 | 6902 | outrel.r_addend = addend + value; |
252b5132 | 6903 | outrel.r_offset = (sgot->output_section->vma |
f21f3fe0 | 6904 | + sgot->output_offset |
252b5132 RH |
6905 | + off); |
6906 | outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); | |
947216bf | 6907 | loc = srelgot->contents; |
00a97672 RS |
6908 | loc += srelgot->reloc_count++ * RELOC_SIZE (globals); |
6909 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
252b5132 | 6910 | } |
f21f3fe0 | 6911 | |
252b5132 RH |
6912 | local_got_offsets[r_symndx] |= 1; |
6913 | } | |
f21f3fe0 | 6914 | |
252b5132 RH |
6915 | value = sgot->output_offset + off; |
6916 | } | |
eb043451 PB |
6917 | if (r_type != R_ARM_GOT32) |
6918 | value += sgot->output_section->vma; | |
9a5aca8c | 6919 | |
f21f3fe0 | 6920 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 | 6921 | contents, rel->r_offset, value, |
00a97672 | 6922 | rel->r_addend); |
f21f3fe0 | 6923 | |
ba93b8ac DJ |
6924 | case R_ARM_TLS_LDO32: |
6925 | value = value - dtpoff_base (info); | |
6926 | ||
6927 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
00a97672 RS |
6928 | contents, rel->r_offset, value, |
6929 | rel->r_addend); | |
ba93b8ac DJ |
6930 | |
6931 | case R_ARM_TLS_LDM32: | |
6932 | { | |
6933 | bfd_vma off; | |
6934 | ||
6935 | if (globals->sgot == NULL) | |
6936 | abort (); | |
6937 | ||
6938 | off = globals->tls_ldm_got.offset; | |
6939 | ||
6940 | if ((off & 1) != 0) | |
6941 | off &= ~1; | |
6942 | else | |
6943 | { | |
6944 | /* If we don't know the module number, create a relocation | |
6945 | for it. */ | |
6946 | if (info->shared) | |
6947 | { | |
6948 | Elf_Internal_Rela outrel; | |
6949 | bfd_byte *loc; | |
6950 | ||
6951 | if (globals->srelgot == NULL) | |
6952 | abort (); | |
6953 | ||
00a97672 | 6954 | outrel.r_addend = 0; |
ba93b8ac DJ |
6955 | outrel.r_offset = (globals->sgot->output_section->vma |
6956 | + globals->sgot->output_offset + off); | |
6957 | outrel.r_info = ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32); | |
6958 | ||
00a97672 RS |
6959 | if (globals->use_rel) |
6960 | bfd_put_32 (output_bfd, outrel.r_addend, | |
6961 | globals->sgot->contents + off); | |
ba93b8ac DJ |
6962 | |
6963 | loc = globals->srelgot->contents; | |
00a97672 RS |
6964 | loc += globals->srelgot->reloc_count++ * RELOC_SIZE (globals); |
6965 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
ba93b8ac DJ |
6966 | } |
6967 | else | |
6968 | bfd_put_32 (output_bfd, 1, globals->sgot->contents + off); | |
6969 | ||
6970 | globals->tls_ldm_got.offset |= 1; | |
6971 | } | |
6972 | ||
906e58ca | 6973 | value = globals->sgot->output_section->vma + globals->sgot->output_offset + off |
ba93b8ac DJ |
6974 | - (input_section->output_section->vma + input_section->output_offset + rel->r_offset); |
6975 | ||
6976 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
6977 | contents, rel->r_offset, value, | |
00a97672 | 6978 | rel->r_addend); |
ba93b8ac DJ |
6979 | } |
6980 | ||
6981 | case R_ARM_TLS_GD32: | |
6982 | case R_ARM_TLS_IE32: | |
6983 | { | |
6984 | bfd_vma off; | |
6985 | int indx; | |
6986 | char tls_type; | |
6987 | ||
6988 | if (globals->sgot == NULL) | |
6989 | abort (); | |
6990 | ||
6991 | indx = 0; | |
6992 | if (h != NULL) | |
6993 | { | |
6994 | bfd_boolean dyn; | |
6995 | dyn = globals->root.dynamic_sections_created; | |
6996 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
6997 | && (!info->shared | |
6998 | || !SYMBOL_REFERENCES_LOCAL (info, h))) | |
6999 | { | |
7000 | *unresolved_reloc_p = FALSE; | |
7001 | indx = h->dynindx; | |
7002 | } | |
7003 | off = h->got.offset; | |
7004 | tls_type = ((struct elf32_arm_link_hash_entry *) h)->tls_type; | |
7005 | } | |
7006 | else | |
7007 | { | |
7008 | if (local_got_offsets == NULL) | |
7009 | abort (); | |
7010 | off = local_got_offsets[r_symndx]; | |
7011 | tls_type = elf32_arm_local_got_tls_type (input_bfd)[r_symndx]; | |
7012 | } | |
7013 | ||
7014 | if (tls_type == GOT_UNKNOWN) | |
7015 | abort (); | |
7016 | ||
7017 | if ((off & 1) != 0) | |
7018 | off &= ~1; | |
7019 | else | |
7020 | { | |
7021 | bfd_boolean need_relocs = FALSE; | |
7022 | Elf_Internal_Rela outrel; | |
7023 | bfd_byte *loc = NULL; | |
7024 | int cur_off = off; | |
7025 | ||
7026 | /* The GOT entries have not been initialized yet. Do it | |
7027 | now, and emit any relocations. If both an IE GOT and a | |
7028 | GD GOT are necessary, we emit the GD first. */ | |
7029 | ||
7030 | if ((info->shared || indx != 0) | |
7031 | && (h == NULL | |
7032 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7033 | || h->root.type != bfd_link_hash_undefweak)) | |
7034 | { | |
7035 | need_relocs = TRUE; | |
7036 | if (globals->srelgot == NULL) | |
7037 | abort (); | |
7038 | loc = globals->srelgot->contents; | |
00a97672 | 7039 | loc += globals->srelgot->reloc_count * RELOC_SIZE (globals); |
ba93b8ac DJ |
7040 | } |
7041 | ||
7042 | if (tls_type & GOT_TLS_GD) | |
7043 | { | |
7044 | if (need_relocs) | |
7045 | { | |
00a97672 | 7046 | outrel.r_addend = 0; |
ba93b8ac | 7047 | outrel.r_offset = (globals->sgot->output_section->vma |
00a97672 RS |
7048 | + globals->sgot->output_offset |
7049 | + cur_off); | |
ba93b8ac | 7050 | outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DTPMOD32); |
ba93b8ac | 7051 | |
00a97672 RS |
7052 | if (globals->use_rel) |
7053 | bfd_put_32 (output_bfd, outrel.r_addend, | |
7054 | globals->sgot->contents + cur_off); | |
7055 | ||
7056 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
ba93b8ac | 7057 | globals->srelgot->reloc_count++; |
00a97672 | 7058 | loc += RELOC_SIZE (globals); |
ba93b8ac DJ |
7059 | |
7060 | if (indx == 0) | |
7061 | bfd_put_32 (output_bfd, value - dtpoff_base (info), | |
7062 | globals->sgot->contents + cur_off + 4); | |
7063 | else | |
7064 | { | |
00a97672 | 7065 | outrel.r_addend = 0; |
ba93b8ac DJ |
7066 | outrel.r_info = ELF32_R_INFO (indx, |
7067 | R_ARM_TLS_DTPOFF32); | |
7068 | outrel.r_offset += 4; | |
00a97672 RS |
7069 | |
7070 | if (globals->use_rel) | |
7071 | bfd_put_32 (output_bfd, outrel.r_addend, | |
7072 | globals->sgot->contents + cur_off + 4); | |
7073 | ||
7074 | ||
7075 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
ba93b8ac | 7076 | globals->srelgot->reloc_count++; |
00a97672 | 7077 | loc += RELOC_SIZE (globals); |
ba93b8ac DJ |
7078 | } |
7079 | } | |
7080 | else | |
7081 | { | |
7082 | /* If we are not emitting relocations for a | |
7083 | general dynamic reference, then we must be in a | |
7084 | static link or an executable link with the | |
7085 | symbol binding locally. Mark it as belonging | |
7086 | to module 1, the executable. */ | |
7087 | bfd_put_32 (output_bfd, 1, | |
7088 | globals->sgot->contents + cur_off); | |
7089 | bfd_put_32 (output_bfd, value - dtpoff_base (info), | |
7090 | globals->sgot->contents + cur_off + 4); | |
7091 | } | |
7092 | ||
7093 | cur_off += 8; | |
7094 | } | |
7095 | ||
7096 | if (tls_type & GOT_TLS_IE) | |
7097 | { | |
7098 | if (need_relocs) | |
7099 | { | |
00a97672 RS |
7100 | if (indx == 0) |
7101 | outrel.r_addend = value - dtpoff_base (info); | |
7102 | else | |
7103 | outrel.r_addend = 0; | |
ba93b8ac DJ |
7104 | outrel.r_offset = (globals->sgot->output_section->vma |
7105 | + globals->sgot->output_offset | |
7106 | + cur_off); | |
7107 | outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_TPOFF32); | |
7108 | ||
00a97672 RS |
7109 | if (globals->use_rel) |
7110 | bfd_put_32 (output_bfd, outrel.r_addend, | |
ba93b8ac DJ |
7111 | globals->sgot->contents + cur_off); |
7112 | ||
00a97672 | 7113 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); |
ba93b8ac | 7114 | globals->srelgot->reloc_count++; |
00a97672 | 7115 | loc += RELOC_SIZE (globals); |
ba93b8ac DJ |
7116 | } |
7117 | else | |
7118 | bfd_put_32 (output_bfd, tpoff (info, value), | |
7119 | globals->sgot->contents + cur_off); | |
7120 | cur_off += 4; | |
7121 | } | |
7122 | ||
7123 | if (h != NULL) | |
7124 | h->got.offset |= 1; | |
7125 | else | |
7126 | local_got_offsets[r_symndx] |= 1; | |
7127 | } | |
7128 | ||
7129 | if ((tls_type & GOT_TLS_GD) && r_type != R_ARM_TLS_GD32) | |
7130 | off += 8; | |
906e58ca | 7131 | value = globals->sgot->output_section->vma + globals->sgot->output_offset + off |
ba93b8ac DJ |
7132 | - (input_section->output_section->vma + input_section->output_offset + rel->r_offset); |
7133 | ||
7134 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
7135 | contents, rel->r_offset, value, | |
00a97672 | 7136 | rel->r_addend); |
ba93b8ac DJ |
7137 | } |
7138 | ||
7139 | case R_ARM_TLS_LE32: | |
7140 | if (info->shared) | |
7141 | { | |
7142 | (*_bfd_error_handler) | |
7143 | (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"), | |
7144 | input_bfd, input_section, | |
7145 | (long) rel->r_offset, howto->name); | |
906e58ca | 7146 | return FALSE; |
ba93b8ac DJ |
7147 | } |
7148 | else | |
7149 | value = tpoff (info, value); | |
906e58ca | 7150 | |
ba93b8ac | 7151 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
00a97672 RS |
7152 | contents, rel->r_offset, value, |
7153 | rel->r_addend); | |
ba93b8ac | 7154 | |
319850b4 JB |
7155 | case R_ARM_V4BX: |
7156 | if (globals->fix_v4bx) | |
845b51d6 PB |
7157 | { |
7158 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
319850b4 | 7159 | |
845b51d6 PB |
7160 | /* Ensure that we have a BX instruction. */ |
7161 | BFD_ASSERT ((insn & 0x0ffffff0) == 0x012fff10); | |
319850b4 | 7162 | |
845b51d6 PB |
7163 | if (globals->fix_v4bx == 2 && (insn & 0xf) != 0xf) |
7164 | { | |
7165 | /* Branch to veneer. */ | |
7166 | bfd_vma glue_addr; | |
7167 | glue_addr = elf32_arm_bx_glue (info, insn & 0xf); | |
7168 | glue_addr -= input_section->output_section->vma | |
7169 | + input_section->output_offset | |
7170 | + rel->r_offset + 8; | |
7171 | insn = (insn & 0xf0000000) | 0x0a000000 | |
7172 | | ((glue_addr >> 2) & 0x00ffffff); | |
7173 | } | |
7174 | else | |
7175 | { | |
7176 | /* Preserve Rm (lowest four bits) and the condition code | |
7177 | (highest four bits). Other bits encode MOV PC,Rm. */ | |
7178 | insn = (insn & 0xf000000f) | 0x01a0f000; | |
7179 | } | |
319850b4 | 7180 | |
845b51d6 PB |
7181 | bfd_put_32 (input_bfd, insn, hit_data); |
7182 | } | |
319850b4 JB |
7183 | return bfd_reloc_ok; |
7184 | ||
b6895b4f PB |
7185 | case R_ARM_MOVW_ABS_NC: |
7186 | case R_ARM_MOVT_ABS: | |
7187 | case R_ARM_MOVW_PREL_NC: | |
7188 | case R_ARM_MOVT_PREL: | |
92f5d02b MS |
7189 | /* Until we properly support segment-base-relative addressing then |
7190 | we assume the segment base to be zero, as for the group relocations. | |
7191 | Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC | |
7192 | and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS. */ | |
7193 | case R_ARM_MOVW_BREL_NC: | |
7194 | case R_ARM_MOVW_BREL: | |
7195 | case R_ARM_MOVT_BREL: | |
b6895b4f PB |
7196 | { |
7197 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
7198 | ||
7199 | if (globals->use_rel) | |
7200 | { | |
7201 | addend = ((insn >> 4) & 0xf000) | (insn & 0xfff); | |
39623e12 | 7202 | signed_addend = (addend ^ 0x8000) - 0x8000; |
b6895b4f | 7203 | } |
92f5d02b | 7204 | |
b6895b4f | 7205 | value += signed_addend; |
b6895b4f PB |
7206 | |
7207 | if (r_type == R_ARM_MOVW_PREL_NC || r_type == R_ARM_MOVT_PREL) | |
7208 | value -= (input_section->output_section->vma | |
7209 | + input_section->output_offset + rel->r_offset); | |
7210 | ||
92f5d02b MS |
7211 | if (r_type == R_ARM_MOVW_BREL && value >= 0x10000) |
7212 | return bfd_reloc_overflow; | |
7213 | ||
7214 | if (sym_flags == STT_ARM_TFUNC) | |
7215 | value |= 1; | |
7216 | ||
7217 | if (r_type == R_ARM_MOVT_ABS || r_type == R_ARM_MOVT_PREL | |
7218 | || r_type == R_ARM_MOVT_BREL) | |
b6895b4f PB |
7219 | value >>= 16; |
7220 | ||
7221 | insn &= 0xfff0f000; | |
7222 | insn |= value & 0xfff; | |
7223 | insn |= (value & 0xf000) << 4; | |
7224 | bfd_put_32 (input_bfd, insn, hit_data); | |
7225 | } | |
7226 | return bfd_reloc_ok; | |
7227 | ||
7228 | case R_ARM_THM_MOVW_ABS_NC: | |
7229 | case R_ARM_THM_MOVT_ABS: | |
7230 | case R_ARM_THM_MOVW_PREL_NC: | |
7231 | case R_ARM_THM_MOVT_PREL: | |
92f5d02b MS |
7232 | /* Until we properly support segment-base-relative addressing then |
7233 | we assume the segment base to be zero, as for the above relocations. | |
7234 | Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as | |
7235 | R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics | |
7236 | as R_ARM_THM_MOVT_ABS. */ | |
7237 | case R_ARM_THM_MOVW_BREL_NC: | |
7238 | case R_ARM_THM_MOVW_BREL: | |
7239 | case R_ARM_THM_MOVT_BREL: | |
b6895b4f PB |
7240 | { |
7241 | bfd_vma insn; | |
906e58ca | 7242 | |
b6895b4f PB |
7243 | insn = bfd_get_16 (input_bfd, hit_data) << 16; |
7244 | insn |= bfd_get_16 (input_bfd, hit_data + 2); | |
7245 | ||
7246 | if (globals->use_rel) | |
7247 | { | |
7248 | addend = ((insn >> 4) & 0xf000) | |
7249 | | ((insn >> 15) & 0x0800) | |
7250 | | ((insn >> 4) & 0x0700) | |
7251 | | (insn & 0x00ff); | |
39623e12 | 7252 | signed_addend = (addend ^ 0x8000) - 0x8000; |
b6895b4f | 7253 | } |
92f5d02b | 7254 | |
b6895b4f | 7255 | value += signed_addend; |
b6895b4f PB |
7256 | |
7257 | if (r_type == R_ARM_THM_MOVW_PREL_NC || r_type == R_ARM_THM_MOVT_PREL) | |
7258 | value -= (input_section->output_section->vma | |
7259 | + input_section->output_offset + rel->r_offset); | |
7260 | ||
92f5d02b MS |
7261 | if (r_type == R_ARM_THM_MOVW_BREL && value >= 0x10000) |
7262 | return bfd_reloc_overflow; | |
7263 | ||
7264 | if (sym_flags == STT_ARM_TFUNC) | |
7265 | value |= 1; | |
7266 | ||
7267 | if (r_type == R_ARM_THM_MOVT_ABS || r_type == R_ARM_THM_MOVT_PREL | |
7268 | || r_type == R_ARM_THM_MOVT_BREL) | |
b6895b4f PB |
7269 | value >>= 16; |
7270 | ||
7271 | insn &= 0xfbf08f00; | |
7272 | insn |= (value & 0xf000) << 4; | |
7273 | insn |= (value & 0x0800) << 15; | |
7274 | insn |= (value & 0x0700) << 4; | |
7275 | insn |= (value & 0x00ff); | |
7276 | ||
7277 | bfd_put_16 (input_bfd, insn >> 16, hit_data); | |
7278 | bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2); | |
7279 | } | |
7280 | return bfd_reloc_ok; | |
7281 | ||
4962c51a MS |
7282 | case R_ARM_ALU_PC_G0_NC: |
7283 | case R_ARM_ALU_PC_G1_NC: | |
7284 | case R_ARM_ALU_PC_G0: | |
7285 | case R_ARM_ALU_PC_G1: | |
7286 | case R_ARM_ALU_PC_G2: | |
7287 | case R_ARM_ALU_SB_G0_NC: | |
7288 | case R_ARM_ALU_SB_G1_NC: | |
7289 | case R_ARM_ALU_SB_G0: | |
7290 | case R_ARM_ALU_SB_G1: | |
7291 | case R_ARM_ALU_SB_G2: | |
7292 | { | |
7293 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
7294 | bfd_vma pc = input_section->output_section->vma | |
7295 | + input_section->output_offset + rel->r_offset; | |
7296 | /* sb should be the origin of the *segment* containing the symbol. | |
7297 | It is not clear how to obtain this OS-dependent value, so we | |
7298 | make an arbitrary choice of zero. */ | |
7299 | bfd_vma sb = 0; | |
7300 | bfd_vma residual; | |
7301 | bfd_vma g_n; | |
7302 | bfd_signed_vma signed_value; | |
7303 | int group = 0; | |
7304 | ||
7305 | /* Determine which group of bits to select. */ | |
7306 | switch (r_type) | |
7307 | { | |
7308 | case R_ARM_ALU_PC_G0_NC: | |
7309 | case R_ARM_ALU_PC_G0: | |
7310 | case R_ARM_ALU_SB_G0_NC: | |
7311 | case R_ARM_ALU_SB_G0: | |
7312 | group = 0; | |
7313 | break; | |
7314 | ||
7315 | case R_ARM_ALU_PC_G1_NC: | |
7316 | case R_ARM_ALU_PC_G1: | |
7317 | case R_ARM_ALU_SB_G1_NC: | |
7318 | case R_ARM_ALU_SB_G1: | |
7319 | group = 1; | |
7320 | break; | |
7321 | ||
7322 | case R_ARM_ALU_PC_G2: | |
7323 | case R_ARM_ALU_SB_G2: | |
7324 | group = 2; | |
7325 | break; | |
7326 | ||
7327 | default: | |
906e58ca | 7328 | abort (); |
4962c51a MS |
7329 | } |
7330 | ||
7331 | /* If REL, extract the addend from the insn. If RELA, it will | |
7332 | have already been fetched for us. */ | |
7333 | if (globals->use_rel) | |
7334 | { | |
7335 | int negative; | |
7336 | bfd_vma constant = insn & 0xff; | |
7337 | bfd_vma rotation = (insn & 0xf00) >> 8; | |
7338 | ||
7339 | if (rotation == 0) | |
7340 | signed_addend = constant; | |
7341 | else | |
7342 | { | |
7343 | /* Compensate for the fact that in the instruction, the | |
7344 | rotation is stored in multiples of 2 bits. */ | |
7345 | rotation *= 2; | |
7346 | ||
7347 | /* Rotate "constant" right by "rotation" bits. */ | |
7348 | signed_addend = (constant >> rotation) | | |
7349 | (constant << (8 * sizeof (bfd_vma) - rotation)); | |
7350 | } | |
7351 | ||
7352 | /* Determine if the instruction is an ADD or a SUB. | |
7353 | (For REL, this determines the sign of the addend.) */ | |
7354 | negative = identify_add_or_sub (insn); | |
7355 | if (negative == 0) | |
7356 | { | |
7357 | (*_bfd_error_handler) | |
7358 | (_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"), | |
7359 | input_bfd, input_section, | |
7360 | (long) rel->r_offset, howto->name); | |
906e58ca | 7361 | return bfd_reloc_overflow; |
4962c51a MS |
7362 | } |
7363 | ||
7364 | signed_addend *= negative; | |
7365 | } | |
7366 | ||
7367 | /* Compute the value (X) to go in the place. */ | |
7368 | if (r_type == R_ARM_ALU_PC_G0_NC | |
7369 | || r_type == R_ARM_ALU_PC_G1_NC | |
7370 | || r_type == R_ARM_ALU_PC_G0 | |
7371 | || r_type == R_ARM_ALU_PC_G1 | |
7372 | || r_type == R_ARM_ALU_PC_G2) | |
7373 | /* PC relative. */ | |
7374 | signed_value = value - pc + signed_addend; | |
7375 | else | |
7376 | /* Section base relative. */ | |
7377 | signed_value = value - sb + signed_addend; | |
7378 | ||
7379 | /* If the target symbol is a Thumb function, then set the | |
7380 | Thumb bit in the address. */ | |
7381 | if (sym_flags == STT_ARM_TFUNC) | |
7382 | signed_value |= 1; | |
7383 | ||
7384 | /* Calculate the value of the relevant G_n, in encoded | |
7385 | constant-with-rotation format. */ | |
7386 | g_n = calculate_group_reloc_mask (abs (signed_value), group, | |
7387 | &residual); | |
7388 | ||
7389 | /* Check for overflow if required. */ | |
7390 | if ((r_type == R_ARM_ALU_PC_G0 | |
7391 | || r_type == R_ARM_ALU_PC_G1 | |
7392 | || r_type == R_ARM_ALU_PC_G2 | |
7393 | || r_type == R_ARM_ALU_SB_G0 | |
7394 | || r_type == R_ARM_ALU_SB_G1 | |
7395 | || r_type == R_ARM_ALU_SB_G2) && residual != 0) | |
7396 | { | |
7397 | (*_bfd_error_handler) | |
7398 | (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"), | |
7399 | input_bfd, input_section, | |
7400 | (long) rel->r_offset, abs (signed_value), howto->name); | |
7401 | return bfd_reloc_overflow; | |
7402 | } | |
7403 | ||
7404 | /* Mask out the value and the ADD/SUB part of the opcode; take care | |
7405 | not to destroy the S bit. */ | |
7406 | insn &= 0xff1ff000; | |
7407 | ||
7408 | /* Set the opcode according to whether the value to go in the | |
7409 | place is negative. */ | |
7410 | if (signed_value < 0) | |
7411 | insn |= 1 << 22; | |
7412 | else | |
7413 | insn |= 1 << 23; | |
7414 | ||
7415 | /* Encode the offset. */ | |
7416 | insn |= g_n; | |
7417 | ||
7418 | bfd_put_32 (input_bfd, insn, hit_data); | |
7419 | } | |
7420 | return bfd_reloc_ok; | |
7421 | ||
7422 | case R_ARM_LDR_PC_G0: | |
7423 | case R_ARM_LDR_PC_G1: | |
7424 | case R_ARM_LDR_PC_G2: | |
7425 | case R_ARM_LDR_SB_G0: | |
7426 | case R_ARM_LDR_SB_G1: | |
7427 | case R_ARM_LDR_SB_G2: | |
7428 | { | |
7429 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
7430 | bfd_vma pc = input_section->output_section->vma | |
7431 | + input_section->output_offset + rel->r_offset; | |
7432 | bfd_vma sb = 0; /* See note above. */ | |
7433 | bfd_vma residual; | |
7434 | bfd_signed_vma signed_value; | |
7435 | int group = 0; | |
7436 | ||
7437 | /* Determine which groups of bits to calculate. */ | |
7438 | switch (r_type) | |
7439 | { | |
7440 | case R_ARM_LDR_PC_G0: | |
7441 | case R_ARM_LDR_SB_G0: | |
7442 | group = 0; | |
7443 | break; | |
7444 | ||
7445 | case R_ARM_LDR_PC_G1: | |
7446 | case R_ARM_LDR_SB_G1: | |
7447 | group = 1; | |
7448 | break; | |
7449 | ||
7450 | case R_ARM_LDR_PC_G2: | |
7451 | case R_ARM_LDR_SB_G2: | |
7452 | group = 2; | |
7453 | break; | |
7454 | ||
7455 | default: | |
906e58ca | 7456 | abort (); |
4962c51a MS |
7457 | } |
7458 | ||
7459 | /* If REL, extract the addend from the insn. If RELA, it will | |
7460 | have already been fetched for us. */ | |
7461 | if (globals->use_rel) | |
7462 | { | |
7463 | int negative = (insn & (1 << 23)) ? 1 : -1; | |
7464 | signed_addend = negative * (insn & 0xfff); | |
7465 | } | |
7466 | ||
7467 | /* Compute the value (X) to go in the place. */ | |
7468 | if (r_type == R_ARM_LDR_PC_G0 | |
7469 | || r_type == R_ARM_LDR_PC_G1 | |
7470 | || r_type == R_ARM_LDR_PC_G2) | |
7471 | /* PC relative. */ | |
7472 | signed_value = value - pc + signed_addend; | |
7473 | else | |
7474 | /* Section base relative. */ | |
7475 | signed_value = value - sb + signed_addend; | |
7476 | ||
7477 | /* Calculate the value of the relevant G_{n-1} to obtain | |
7478 | the residual at that stage. */ | |
7479 | calculate_group_reloc_mask (abs (signed_value), group - 1, &residual); | |
7480 | ||
7481 | /* Check for overflow. */ | |
7482 | if (residual >= 0x1000) | |
7483 | { | |
7484 | (*_bfd_error_handler) | |
7485 | (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"), | |
7486 | input_bfd, input_section, | |
7487 | (long) rel->r_offset, abs (signed_value), howto->name); | |
7488 | return bfd_reloc_overflow; | |
7489 | } | |
7490 | ||
7491 | /* Mask out the value and U bit. */ | |
7492 | insn &= 0xff7ff000; | |
7493 | ||
7494 | /* Set the U bit if the value to go in the place is non-negative. */ | |
7495 | if (signed_value >= 0) | |
7496 | insn |= 1 << 23; | |
7497 | ||
7498 | /* Encode the offset. */ | |
7499 | insn |= residual; | |
7500 | ||
7501 | bfd_put_32 (input_bfd, insn, hit_data); | |
7502 | } | |
7503 | return bfd_reloc_ok; | |
7504 | ||
7505 | case R_ARM_LDRS_PC_G0: | |
7506 | case R_ARM_LDRS_PC_G1: | |
7507 | case R_ARM_LDRS_PC_G2: | |
7508 | case R_ARM_LDRS_SB_G0: | |
7509 | case R_ARM_LDRS_SB_G1: | |
7510 | case R_ARM_LDRS_SB_G2: | |
7511 | { | |
7512 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
7513 | bfd_vma pc = input_section->output_section->vma | |
7514 | + input_section->output_offset + rel->r_offset; | |
7515 | bfd_vma sb = 0; /* See note above. */ | |
7516 | bfd_vma residual; | |
7517 | bfd_signed_vma signed_value; | |
7518 | int group = 0; | |
7519 | ||
7520 | /* Determine which groups of bits to calculate. */ | |
7521 | switch (r_type) | |
7522 | { | |
7523 | case R_ARM_LDRS_PC_G0: | |
7524 | case R_ARM_LDRS_SB_G0: | |
7525 | group = 0; | |
7526 | break; | |
7527 | ||
7528 | case R_ARM_LDRS_PC_G1: | |
7529 | case R_ARM_LDRS_SB_G1: | |
7530 | group = 1; | |
7531 | break; | |
7532 | ||
7533 | case R_ARM_LDRS_PC_G2: | |
7534 | case R_ARM_LDRS_SB_G2: | |
7535 | group = 2; | |
7536 | break; | |
7537 | ||
7538 | default: | |
906e58ca | 7539 | abort (); |
4962c51a MS |
7540 | } |
7541 | ||
7542 | /* If REL, extract the addend from the insn. If RELA, it will | |
7543 | have already been fetched for us. */ | |
7544 | if (globals->use_rel) | |
7545 | { | |
7546 | int negative = (insn & (1 << 23)) ? 1 : -1; | |
7547 | signed_addend = negative * (((insn & 0xf00) >> 4) + (insn & 0xf)); | |
7548 | } | |
7549 | ||
7550 | /* Compute the value (X) to go in the place. */ | |
7551 | if (r_type == R_ARM_LDRS_PC_G0 | |
7552 | || r_type == R_ARM_LDRS_PC_G1 | |
7553 | || r_type == R_ARM_LDRS_PC_G2) | |
7554 | /* PC relative. */ | |
7555 | signed_value = value - pc + signed_addend; | |
7556 | else | |
7557 | /* Section base relative. */ | |
7558 | signed_value = value - sb + signed_addend; | |
7559 | ||
7560 | /* Calculate the value of the relevant G_{n-1} to obtain | |
7561 | the residual at that stage. */ | |
7562 | calculate_group_reloc_mask (abs (signed_value), group - 1, &residual); | |
7563 | ||
7564 | /* Check for overflow. */ | |
7565 | if (residual >= 0x100) | |
7566 | { | |
7567 | (*_bfd_error_handler) | |
7568 | (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"), | |
7569 | input_bfd, input_section, | |
7570 | (long) rel->r_offset, abs (signed_value), howto->name); | |
7571 | return bfd_reloc_overflow; | |
7572 | } | |
7573 | ||
7574 | /* Mask out the value and U bit. */ | |
7575 | insn &= 0xff7ff0f0; | |
7576 | ||
7577 | /* Set the U bit if the value to go in the place is non-negative. */ | |
7578 | if (signed_value >= 0) | |
7579 | insn |= 1 << 23; | |
7580 | ||
7581 | /* Encode the offset. */ | |
7582 | insn |= ((residual & 0xf0) << 4) | (residual & 0xf); | |
7583 | ||
7584 | bfd_put_32 (input_bfd, insn, hit_data); | |
7585 | } | |
7586 | return bfd_reloc_ok; | |
7587 | ||
7588 | case R_ARM_LDC_PC_G0: | |
7589 | case R_ARM_LDC_PC_G1: | |
7590 | case R_ARM_LDC_PC_G2: | |
7591 | case R_ARM_LDC_SB_G0: | |
7592 | case R_ARM_LDC_SB_G1: | |
7593 | case R_ARM_LDC_SB_G2: | |
7594 | { | |
7595 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
7596 | bfd_vma pc = input_section->output_section->vma | |
7597 | + input_section->output_offset + rel->r_offset; | |
7598 | bfd_vma sb = 0; /* See note above. */ | |
7599 | bfd_vma residual; | |
7600 | bfd_signed_vma signed_value; | |
7601 | int group = 0; | |
7602 | ||
7603 | /* Determine which groups of bits to calculate. */ | |
7604 | switch (r_type) | |
7605 | { | |
7606 | case R_ARM_LDC_PC_G0: | |
7607 | case R_ARM_LDC_SB_G0: | |
7608 | group = 0; | |
7609 | break; | |
7610 | ||
7611 | case R_ARM_LDC_PC_G1: | |
7612 | case R_ARM_LDC_SB_G1: | |
7613 | group = 1; | |
7614 | break; | |
7615 | ||
7616 | case R_ARM_LDC_PC_G2: | |
7617 | case R_ARM_LDC_SB_G2: | |
7618 | group = 2; | |
7619 | break; | |
7620 | ||
7621 | default: | |
906e58ca | 7622 | abort (); |
4962c51a MS |
7623 | } |
7624 | ||
7625 | /* If REL, extract the addend from the insn. If RELA, it will | |
7626 | have already been fetched for us. */ | |
7627 | if (globals->use_rel) | |
7628 | { | |
7629 | int negative = (insn & (1 << 23)) ? 1 : -1; | |
7630 | signed_addend = negative * ((insn & 0xff) << 2); | |
7631 | } | |
7632 | ||
7633 | /* Compute the value (X) to go in the place. */ | |
7634 | if (r_type == R_ARM_LDC_PC_G0 | |
7635 | || r_type == R_ARM_LDC_PC_G1 | |
7636 | || r_type == R_ARM_LDC_PC_G2) | |
7637 | /* PC relative. */ | |
7638 | signed_value = value - pc + signed_addend; | |
7639 | else | |
7640 | /* Section base relative. */ | |
7641 | signed_value = value - sb + signed_addend; | |
7642 | ||
7643 | /* Calculate the value of the relevant G_{n-1} to obtain | |
7644 | the residual at that stage. */ | |
7645 | calculate_group_reloc_mask (abs (signed_value), group - 1, &residual); | |
7646 | ||
7647 | /* Check for overflow. (The absolute value to go in the place must be | |
7648 | divisible by four and, after having been divided by four, must | |
7649 | fit in eight bits.) */ | |
7650 | if ((residual & 0x3) != 0 || residual >= 0x400) | |
7651 | { | |
7652 | (*_bfd_error_handler) | |
7653 | (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"), | |
7654 | input_bfd, input_section, | |
7655 | (long) rel->r_offset, abs (signed_value), howto->name); | |
7656 | return bfd_reloc_overflow; | |
7657 | } | |
7658 | ||
7659 | /* Mask out the value and U bit. */ | |
7660 | insn &= 0xff7fff00; | |
7661 | ||
7662 | /* Set the U bit if the value to go in the place is non-negative. */ | |
7663 | if (signed_value >= 0) | |
7664 | insn |= 1 << 23; | |
7665 | ||
7666 | /* Encode the offset. */ | |
7667 | insn |= residual >> 2; | |
7668 | ||
7669 | bfd_put_32 (input_bfd, insn, hit_data); | |
7670 | } | |
7671 | return bfd_reloc_ok; | |
7672 | ||
252b5132 RH |
7673 | default: |
7674 | return bfd_reloc_notsupported; | |
7675 | } | |
7676 | } | |
7677 | ||
98c1d4aa NC |
7678 | /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */ |
7679 | static void | |
57e8b36a NC |
7680 | arm_add_to_rel (bfd * abfd, |
7681 | bfd_byte * address, | |
7682 | reloc_howto_type * howto, | |
7683 | bfd_signed_vma increment) | |
98c1d4aa | 7684 | { |
98c1d4aa NC |
7685 | bfd_signed_vma addend; |
7686 | ||
bd97cb95 DJ |
7687 | if (howto->type == R_ARM_THM_CALL |
7688 | || howto->type == R_ARM_THM_JUMP24) | |
98c1d4aa | 7689 | { |
9a5aca8c AM |
7690 | int upper_insn, lower_insn; |
7691 | int upper, lower; | |
98c1d4aa | 7692 | |
9a5aca8c AM |
7693 | upper_insn = bfd_get_16 (abfd, address); |
7694 | lower_insn = bfd_get_16 (abfd, address + 2); | |
7695 | upper = upper_insn & 0x7ff; | |
7696 | lower = lower_insn & 0x7ff; | |
7697 | ||
7698 | addend = (upper << 12) | (lower << 1); | |
ddda4409 | 7699 | addend += increment; |
9a5aca8c | 7700 | addend >>= 1; |
98c1d4aa | 7701 | |
9a5aca8c AM |
7702 | upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff); |
7703 | lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff); | |
7704 | ||
dc810e39 AM |
7705 | bfd_put_16 (abfd, (bfd_vma) upper_insn, address); |
7706 | bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2); | |
9a5aca8c AM |
7707 | } |
7708 | else | |
7709 | { | |
7710 | bfd_vma contents; | |
7711 | ||
7712 | contents = bfd_get_32 (abfd, address); | |
7713 | ||
7714 | /* Get the (signed) value from the instruction. */ | |
7715 | addend = contents & howto->src_mask; | |
7716 | if (addend & ((howto->src_mask + 1) >> 1)) | |
7717 | { | |
7718 | bfd_signed_vma mask; | |
7719 | ||
7720 | mask = -1; | |
7721 | mask &= ~ howto->src_mask; | |
7722 | addend |= mask; | |
7723 | } | |
7724 | ||
7725 | /* Add in the increment, (which is a byte value). */ | |
7726 | switch (howto->type) | |
7727 | { | |
7728 | default: | |
7729 | addend += increment; | |
7730 | break; | |
7731 | ||
7732 | case R_ARM_PC24: | |
c6596c5e | 7733 | case R_ARM_PLT32: |
5b5bb741 PB |
7734 | case R_ARM_CALL: |
7735 | case R_ARM_JUMP24: | |
9a5aca8c | 7736 | addend <<= howto->size; |
dc810e39 | 7737 | addend += increment; |
9a5aca8c AM |
7738 | |
7739 | /* Should we check for overflow here ? */ | |
7740 | ||
7741 | /* Drop any undesired bits. */ | |
7742 | addend >>= howto->rightshift; | |
7743 | break; | |
7744 | } | |
7745 | ||
7746 | contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask); | |
7747 | ||
7748 | bfd_put_32 (abfd, contents, address); | |
ddda4409 | 7749 | } |
98c1d4aa | 7750 | } |
252b5132 | 7751 | |
ba93b8ac DJ |
7752 | #define IS_ARM_TLS_RELOC(R_TYPE) \ |
7753 | ((R_TYPE) == R_ARM_TLS_GD32 \ | |
7754 | || (R_TYPE) == R_ARM_TLS_LDO32 \ | |
7755 | || (R_TYPE) == R_ARM_TLS_LDM32 \ | |
7756 | || (R_TYPE) == R_ARM_TLS_DTPOFF32 \ | |
7757 | || (R_TYPE) == R_ARM_TLS_DTPMOD32 \ | |
7758 | || (R_TYPE) == R_ARM_TLS_TPOFF32 \ | |
7759 | || (R_TYPE) == R_ARM_TLS_LE32 \ | |
7760 | || (R_TYPE) == R_ARM_TLS_IE32) | |
7761 | ||
252b5132 | 7762 | /* Relocate an ARM ELF section. */ |
906e58ca | 7763 | |
b34976b6 | 7764 | static bfd_boolean |
57e8b36a NC |
7765 | elf32_arm_relocate_section (bfd * output_bfd, |
7766 | struct bfd_link_info * info, | |
7767 | bfd * input_bfd, | |
7768 | asection * input_section, | |
7769 | bfd_byte * contents, | |
7770 | Elf_Internal_Rela * relocs, | |
7771 | Elf_Internal_Sym * local_syms, | |
7772 | asection ** local_sections) | |
252b5132 | 7773 | { |
b34976b6 AM |
7774 | Elf_Internal_Shdr *symtab_hdr; |
7775 | struct elf_link_hash_entry **sym_hashes; | |
7776 | Elf_Internal_Rela *rel; | |
7777 | Elf_Internal_Rela *relend; | |
7778 | const char *name; | |
b32d3aa2 | 7779 | struct elf32_arm_link_hash_table * globals; |
252b5132 | 7780 | |
4e7fd91e | 7781 | globals = elf32_arm_hash_table (info); |
b491616a | 7782 | |
0ffa91dd | 7783 | symtab_hdr = & elf_symtab_hdr (input_bfd); |
252b5132 RH |
7784 | sym_hashes = elf_sym_hashes (input_bfd); |
7785 | ||
7786 | rel = relocs; | |
7787 | relend = relocs + input_section->reloc_count; | |
7788 | for (; rel < relend; rel++) | |
7789 | { | |
ba96a88f NC |
7790 | int r_type; |
7791 | reloc_howto_type * howto; | |
7792 | unsigned long r_symndx; | |
7793 | Elf_Internal_Sym * sym; | |
7794 | asection * sec; | |
252b5132 | 7795 | struct elf_link_hash_entry * h; |
ba96a88f NC |
7796 | bfd_vma relocation; |
7797 | bfd_reloc_status_type r; | |
7798 | arelent bfd_reloc; | |
ba93b8ac | 7799 | char sym_type; |
0945cdfd | 7800 | bfd_boolean unresolved_reloc = FALSE; |
f2a9dd69 | 7801 | char *error_message = NULL; |
f21f3fe0 | 7802 | |
252b5132 | 7803 | r_symndx = ELF32_R_SYM (rel->r_info); |
ba96a88f | 7804 | r_type = ELF32_R_TYPE (rel->r_info); |
b32d3aa2 | 7805 | r_type = arm_real_reloc_type (globals, r_type); |
252b5132 | 7806 | |
ba96a88f NC |
7807 | if ( r_type == R_ARM_GNU_VTENTRY |
7808 | || r_type == R_ARM_GNU_VTINHERIT) | |
252b5132 RH |
7809 | continue; |
7810 | ||
b32d3aa2 | 7811 | bfd_reloc.howto = elf32_arm_howto_from_type (r_type); |
ba96a88f | 7812 | howto = bfd_reloc.howto; |
252b5132 | 7813 | |
252b5132 RH |
7814 | h = NULL; |
7815 | sym = NULL; | |
7816 | sec = NULL; | |
9b485d32 | 7817 | |
252b5132 RH |
7818 | if (r_symndx < symtab_hdr->sh_info) |
7819 | { | |
7820 | sym = local_syms + r_symndx; | |
ba93b8ac | 7821 | sym_type = ELF32_ST_TYPE (sym->st_info); |
252b5132 | 7822 | sec = local_sections[r_symndx]; |
4e7fd91e | 7823 | if (globals->use_rel) |
f8df10f4 | 7824 | { |
4e7fd91e PB |
7825 | relocation = (sec->output_section->vma |
7826 | + sec->output_offset | |
7827 | + sym->st_value); | |
ab96bf03 AM |
7828 | if (!info->relocatable |
7829 | && (sec->flags & SEC_MERGE) | |
7830 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
f8df10f4 | 7831 | { |
4e7fd91e PB |
7832 | asection *msec; |
7833 | bfd_vma addend, value; | |
7834 | ||
39623e12 | 7835 | switch (r_type) |
4e7fd91e | 7836 | { |
39623e12 PB |
7837 | case R_ARM_MOVW_ABS_NC: |
7838 | case R_ARM_MOVT_ABS: | |
7839 | value = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
7840 | addend = ((value & 0xf0000) >> 4) | (value & 0xfff); | |
7841 | addend = (addend ^ 0x8000) - 0x8000; | |
7842 | break; | |
f8df10f4 | 7843 | |
39623e12 PB |
7844 | case R_ARM_THM_MOVW_ABS_NC: |
7845 | case R_ARM_THM_MOVT_ABS: | |
7846 | value = bfd_get_16 (input_bfd, contents + rel->r_offset) | |
7847 | << 16; | |
7848 | value |= bfd_get_16 (input_bfd, | |
7849 | contents + rel->r_offset + 2); | |
7850 | addend = ((value & 0xf7000) >> 4) | (value & 0xff) | |
7851 | | ((value & 0x04000000) >> 15); | |
7852 | addend = (addend ^ 0x8000) - 0x8000; | |
7853 | break; | |
f8df10f4 | 7854 | |
39623e12 PB |
7855 | default: |
7856 | if (howto->rightshift | |
7857 | || (howto->src_mask & (howto->src_mask + 1))) | |
7858 | { | |
7859 | (*_bfd_error_handler) | |
7860 | (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"), | |
7861 | input_bfd, input_section, | |
7862 | (long) rel->r_offset, howto->name); | |
7863 | return FALSE; | |
7864 | } | |
7865 | ||
7866 | value = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
7867 | ||
7868 | /* Get the (signed) value from the instruction. */ | |
7869 | addend = value & howto->src_mask; | |
7870 | if (addend & ((howto->src_mask + 1) >> 1)) | |
7871 | { | |
7872 | bfd_signed_vma mask; | |
7873 | ||
7874 | mask = -1; | |
7875 | mask &= ~ howto->src_mask; | |
7876 | addend |= mask; | |
7877 | } | |
7878 | break; | |
4e7fd91e | 7879 | } |
39623e12 | 7880 | |
4e7fd91e PB |
7881 | msec = sec; |
7882 | addend = | |
7883 | _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend) | |
7884 | - relocation; | |
7885 | addend += msec->output_section->vma + msec->output_offset; | |
39623e12 PB |
7886 | |
7887 | /* Cases here must match those in the preceeding | |
7888 | switch statement. */ | |
7889 | switch (r_type) | |
7890 | { | |
7891 | case R_ARM_MOVW_ABS_NC: | |
7892 | case R_ARM_MOVT_ABS: | |
7893 | value = (value & 0xfff0f000) | ((addend & 0xf000) << 4) | |
7894 | | (addend & 0xfff); | |
7895 | bfd_put_32 (input_bfd, value, contents + rel->r_offset); | |
7896 | break; | |
7897 | ||
7898 | case R_ARM_THM_MOVW_ABS_NC: | |
7899 | case R_ARM_THM_MOVT_ABS: | |
7900 | value = (value & 0xfbf08f00) | ((addend & 0xf700) << 4) | |
7901 | | (addend & 0xff) | ((addend & 0x0800) << 15); | |
7902 | bfd_put_16 (input_bfd, value >> 16, | |
7903 | contents + rel->r_offset); | |
7904 | bfd_put_16 (input_bfd, value, | |
7905 | contents + rel->r_offset + 2); | |
7906 | break; | |
7907 | ||
7908 | default: | |
7909 | value = (value & ~ howto->dst_mask) | |
7910 | | (addend & howto->dst_mask); | |
7911 | bfd_put_32 (input_bfd, value, contents + rel->r_offset); | |
7912 | break; | |
7913 | } | |
f8df10f4 | 7914 | } |
f8df10f4 | 7915 | } |
4e7fd91e PB |
7916 | else |
7917 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
252b5132 RH |
7918 | } |
7919 | else | |
7920 | { | |
560e09e9 | 7921 | bfd_boolean warned; |
560e09e9 | 7922 | |
b2a8e766 AM |
7923 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
7924 | r_symndx, symtab_hdr, sym_hashes, | |
7925 | h, sec, relocation, | |
7926 | unresolved_reloc, warned); | |
ba93b8ac DJ |
7927 | |
7928 | sym_type = h->type; | |
252b5132 RH |
7929 | } |
7930 | ||
ab96bf03 AM |
7931 | if (sec != NULL && elf_discarded_section (sec)) |
7932 | { | |
7933 | /* For relocs against symbols from removed linkonce sections, | |
7934 | or sections discarded by a linker script, we just want the | |
7935 | section contents zeroed. Avoid any special processing. */ | |
7936 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); | |
7937 | rel->r_info = 0; | |
7938 | rel->r_addend = 0; | |
7939 | continue; | |
7940 | } | |
7941 | ||
7942 | if (info->relocatable) | |
7943 | { | |
7944 | /* This is a relocatable link. We don't have to change | |
7945 | anything, unless the reloc is against a section symbol, | |
7946 | in which case we have to adjust according to where the | |
7947 | section symbol winds up in the output section. */ | |
7948 | if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
7949 | { | |
7950 | if (globals->use_rel) | |
7951 | arm_add_to_rel (input_bfd, contents + rel->r_offset, | |
7952 | howto, (bfd_signed_vma) sec->output_offset); | |
7953 | else | |
7954 | rel->r_addend += sec->output_offset; | |
7955 | } | |
7956 | continue; | |
7957 | } | |
7958 | ||
252b5132 RH |
7959 | if (h != NULL) |
7960 | name = h->root.root.string; | |
7961 | else | |
7962 | { | |
7963 | name = (bfd_elf_string_from_elf_section | |
7964 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
7965 | if (name == NULL || *name == '\0') | |
7966 | name = bfd_section_name (input_bfd, sec); | |
7967 | } | |
f21f3fe0 | 7968 | |
ba93b8ac DJ |
7969 | if (r_symndx != 0 |
7970 | && r_type != R_ARM_NONE | |
7971 | && (h == NULL | |
7972 | || h->root.type == bfd_link_hash_defined | |
7973 | || h->root.type == bfd_link_hash_defweak) | |
7974 | && IS_ARM_TLS_RELOC (r_type) != (sym_type == STT_TLS)) | |
7975 | { | |
7976 | (*_bfd_error_handler) | |
7977 | ((sym_type == STT_TLS | |
7978 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") | |
7979 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")), | |
7980 | input_bfd, | |
7981 | input_section, | |
7982 | (long) rel->r_offset, | |
7983 | howto->name, | |
7984 | name); | |
7985 | } | |
7986 | ||
252b5132 RH |
7987 | r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd, |
7988 | input_section, contents, rel, | |
7989 | relocation, info, sec, name, | |
7990 | (h ? ELF_ST_TYPE (h->type) : | |
0945cdfd | 7991 | ELF_ST_TYPE (sym->st_info)), h, |
f2a9dd69 | 7992 | &unresolved_reloc, &error_message); |
0945cdfd DJ |
7993 | |
7994 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections | |
7995 | because such sections are not SEC_ALLOC and thus ld.so will | |
7996 | not process them. */ | |
7997 | if (unresolved_reloc | |
7998 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
7999 | && h->def_dynamic)) | |
8000 | { | |
8001 | (*_bfd_error_handler) | |
843fe662 L |
8002 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
8003 | input_bfd, | |
8004 | input_section, | |
8005 | (long) rel->r_offset, | |
8006 | howto->name, | |
8007 | h->root.root.string); | |
0945cdfd DJ |
8008 | return FALSE; |
8009 | } | |
252b5132 RH |
8010 | |
8011 | if (r != bfd_reloc_ok) | |
8012 | { | |
252b5132 RH |
8013 | switch (r) |
8014 | { | |
8015 | case bfd_reloc_overflow: | |
cf919dfd PB |
8016 | /* If the overflowing reloc was to an undefined symbol, |
8017 | we have already printed one error message and there | |
8018 | is no point complaining again. */ | |
8019 | if ((! h || | |
8020 | h->root.type != bfd_link_hash_undefined) | |
8021 | && (!((*info->callbacks->reloc_overflow) | |
dfeffb9f L |
8022 | (info, (h ? &h->root : NULL), name, howto->name, |
8023 | (bfd_vma) 0, input_bfd, input_section, | |
8024 | rel->r_offset)))) | |
b34976b6 | 8025 | return FALSE; |
252b5132 RH |
8026 | break; |
8027 | ||
8028 | case bfd_reloc_undefined: | |
8029 | if (!((*info->callbacks->undefined_symbol) | |
8030 | (info, name, input_bfd, input_section, | |
b34976b6 AM |
8031 | rel->r_offset, TRUE))) |
8032 | return FALSE; | |
252b5132 RH |
8033 | break; |
8034 | ||
8035 | case bfd_reloc_outofrange: | |
f2a9dd69 | 8036 | error_message = _("out of range"); |
252b5132 RH |
8037 | goto common_error; |
8038 | ||
8039 | case bfd_reloc_notsupported: | |
f2a9dd69 | 8040 | error_message = _("unsupported relocation"); |
252b5132 RH |
8041 | goto common_error; |
8042 | ||
8043 | case bfd_reloc_dangerous: | |
f2a9dd69 | 8044 | /* error_message should already be set. */ |
252b5132 RH |
8045 | goto common_error; |
8046 | ||
8047 | default: | |
f2a9dd69 | 8048 | error_message = _("unknown error"); |
8029a119 | 8049 | /* Fall through. */ |
252b5132 RH |
8050 | |
8051 | common_error: | |
f2a9dd69 DJ |
8052 | BFD_ASSERT (error_message != NULL); |
8053 | if (!((*info->callbacks->reloc_dangerous) | |
8054 | (info, error_message, input_bfd, input_section, | |
252b5132 | 8055 | rel->r_offset))) |
b34976b6 | 8056 | return FALSE; |
252b5132 RH |
8057 | break; |
8058 | } | |
8059 | } | |
8060 | } | |
8061 | ||
b34976b6 | 8062 | return TRUE; |
252b5132 RH |
8063 | } |
8064 | ||
c178919b NC |
8065 | /* Set the right machine number. */ |
8066 | ||
8067 | static bfd_boolean | |
57e8b36a | 8068 | elf32_arm_object_p (bfd *abfd) |
c178919b | 8069 | { |
5a6c6817 | 8070 | unsigned int mach; |
57e8b36a | 8071 | |
5a6c6817 | 8072 | mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION); |
c178919b | 8073 | |
5a6c6817 NC |
8074 | if (mach != bfd_mach_arm_unknown) |
8075 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach); | |
8076 | ||
8077 | else if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT) | |
8078 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_ep9312); | |
e16bb312 | 8079 | |
e16bb312 | 8080 | else |
5a6c6817 | 8081 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach); |
c178919b NC |
8082 | |
8083 | return TRUE; | |
8084 | } | |
8085 | ||
fc830a83 | 8086 | /* Function to keep ARM specific flags in the ELF header. */ |
3c9458e9 | 8087 | |
b34976b6 | 8088 | static bfd_boolean |
57e8b36a | 8089 | elf32_arm_set_private_flags (bfd *abfd, flagword flags) |
252b5132 RH |
8090 | { |
8091 | if (elf_flags_init (abfd) | |
8092 | && elf_elfheader (abfd)->e_flags != flags) | |
8093 | { | |
fc830a83 NC |
8094 | if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN) |
8095 | { | |
fd2ec330 | 8096 | if (flags & EF_ARM_INTERWORK) |
d003868e AM |
8097 | (*_bfd_error_handler) |
8098 | (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"), | |
8099 | abfd); | |
fc830a83 | 8100 | else |
d003868e AM |
8101 | _bfd_error_handler |
8102 | (_("Warning: Clearing the interworking flag of %B due to outside request"), | |
8103 | abfd); | |
fc830a83 | 8104 | } |
252b5132 RH |
8105 | } |
8106 | else | |
8107 | { | |
8108 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 | 8109 | elf_flags_init (abfd) = TRUE; |
252b5132 RH |
8110 | } |
8111 | ||
b34976b6 | 8112 | return TRUE; |
252b5132 RH |
8113 | } |
8114 | ||
fc830a83 | 8115 | /* Copy backend specific data from one object module to another. */ |
9b485d32 | 8116 | |
b34976b6 | 8117 | static bfd_boolean |
57e8b36a | 8118 | elf32_arm_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
252b5132 RH |
8119 | { |
8120 | flagword in_flags; | |
8121 | flagword out_flags; | |
8122 | ||
0ffa91dd | 8123 | if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd)) |
b34976b6 | 8124 | return TRUE; |
252b5132 | 8125 | |
fc830a83 | 8126 | in_flags = elf_elfheader (ibfd)->e_flags; |
252b5132 RH |
8127 | out_flags = elf_elfheader (obfd)->e_flags; |
8128 | ||
fc830a83 NC |
8129 | if (elf_flags_init (obfd) |
8130 | && EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN | |
8131 | && in_flags != out_flags) | |
252b5132 | 8132 | { |
252b5132 | 8133 | /* Cannot mix APCS26 and APCS32 code. */ |
fd2ec330 | 8134 | if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26)) |
b34976b6 | 8135 | return FALSE; |
252b5132 RH |
8136 | |
8137 | /* Cannot mix float APCS and non-float APCS code. */ | |
fd2ec330 | 8138 | if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT)) |
b34976b6 | 8139 | return FALSE; |
252b5132 RH |
8140 | |
8141 | /* If the src and dest have different interworking flags | |
8142 | then turn off the interworking bit. */ | |
fd2ec330 | 8143 | if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK)) |
252b5132 | 8144 | { |
fd2ec330 | 8145 | if (out_flags & EF_ARM_INTERWORK) |
d003868e AM |
8146 | _bfd_error_handler |
8147 | (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"), | |
8148 | obfd, ibfd); | |
252b5132 | 8149 | |
fd2ec330 | 8150 | in_flags &= ~EF_ARM_INTERWORK; |
252b5132 | 8151 | } |
1006ba19 PB |
8152 | |
8153 | /* Likewise for PIC, though don't warn for this case. */ | |
fd2ec330 PB |
8154 | if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC)) |
8155 | in_flags &= ~EF_ARM_PIC; | |
252b5132 RH |
8156 | } |
8157 | ||
8158 | elf_elfheader (obfd)->e_flags = in_flags; | |
b34976b6 | 8159 | elf_flags_init (obfd) = TRUE; |
252b5132 | 8160 | |
94a3258f PB |
8161 | /* Also copy the EI_OSABI field. */ |
8162 | elf_elfheader (obfd)->e_ident[EI_OSABI] = | |
8163 | elf_elfheader (ibfd)->e_ident[EI_OSABI]; | |
8164 | ||
104d59d1 JM |
8165 | /* Copy object attributes. */ |
8166 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
ee065d83 PB |
8167 | |
8168 | return TRUE; | |
8169 | } | |
8170 | ||
8171 | /* Values for Tag_ABI_PCS_R9_use. */ | |
8172 | enum | |
8173 | { | |
8174 | AEABI_R9_V6, | |
8175 | AEABI_R9_SB, | |
8176 | AEABI_R9_TLS, | |
8177 | AEABI_R9_unused | |
8178 | }; | |
8179 | ||
8180 | /* Values for Tag_ABI_PCS_RW_data. */ | |
8181 | enum | |
8182 | { | |
8183 | AEABI_PCS_RW_data_absolute, | |
8184 | AEABI_PCS_RW_data_PCrel, | |
8185 | AEABI_PCS_RW_data_SBrel, | |
8186 | AEABI_PCS_RW_data_unused | |
8187 | }; | |
8188 | ||
8189 | /* Values for Tag_ABI_enum_size. */ | |
8190 | enum | |
8191 | { | |
8192 | AEABI_enum_unused, | |
8193 | AEABI_enum_short, | |
8194 | AEABI_enum_wide, | |
8195 | AEABI_enum_forced_wide | |
8196 | }; | |
8197 | ||
104d59d1 JM |
8198 | /* Determine whether an object attribute tag takes an integer, a |
8199 | string or both. */ | |
906e58ca | 8200 | |
104d59d1 JM |
8201 | static int |
8202 | elf32_arm_obj_attrs_arg_type (int tag) | |
8203 | { | |
8204 | if (tag == Tag_compatibility) | |
3483fe2e | 8205 | return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_STR_VAL; |
2d0bb761 | 8206 | else if (tag == Tag_nodefaults) |
3483fe2e AS |
8207 | return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_NO_DEFAULT; |
8208 | else if (tag == Tag_CPU_raw_name || tag == Tag_CPU_name) | |
8209 | return ATTR_TYPE_FLAG_STR_VAL; | |
104d59d1 | 8210 | else if (tag < 32) |
3483fe2e | 8211 | return ATTR_TYPE_FLAG_INT_VAL; |
104d59d1 | 8212 | else |
3483fe2e | 8213 | return (tag & 1) != 0 ? ATTR_TYPE_FLAG_STR_VAL : ATTR_TYPE_FLAG_INT_VAL; |
104d59d1 JM |
8214 | } |
8215 | ||
5aa6ff7c AS |
8216 | /* The ABI defines that Tag_conformance should be emitted first, and that |
8217 | Tag_nodefaults should be second (if either is defined). This sets those | |
8218 | two positions, and bumps up the position of all the remaining tags to | |
8219 | compensate. */ | |
8220 | static int | |
8221 | elf32_arm_obj_attrs_order (int num) | |
8222 | { | |
8223 | if (num == 4) | |
8224 | return Tag_conformance; | |
8225 | if (num == 5) | |
8226 | return Tag_nodefaults; | |
8227 | if ((num - 2) < Tag_nodefaults) | |
8228 | return num - 2; | |
8229 | if ((num - 1) < Tag_conformance) | |
8230 | return num - 1; | |
8231 | return num; | |
8232 | } | |
8233 | ||
91e22acd AS |
8234 | /* Read the architecture from the Tag_also_compatible_with attribute, if any. |
8235 | Returns -1 if no architecture could be read. */ | |
8236 | ||
8237 | static int | |
8238 | get_secondary_compatible_arch (bfd *abfd) | |
8239 | { | |
8240 | obj_attribute *attr = | |
8241 | &elf_known_obj_attributes_proc (abfd)[Tag_also_compatible_with]; | |
8242 | ||
8243 | /* Note: the tag and its argument below are uleb128 values, though | |
8244 | currently-defined values fit in one byte for each. */ | |
8245 | if (attr->s | |
8246 | && attr->s[0] == Tag_CPU_arch | |
8247 | && (attr->s[1] & 128) != 128 | |
8248 | && attr->s[2] == 0) | |
8249 | return attr->s[1]; | |
8250 | ||
8251 | /* This tag is "safely ignorable", so don't complain if it looks funny. */ | |
8252 | return -1; | |
8253 | } | |
8254 | ||
8255 | /* Set, or unset, the architecture of the Tag_also_compatible_with attribute. | |
8256 | The tag is removed if ARCH is -1. */ | |
8257 | ||
8e79c3df | 8258 | static void |
91e22acd | 8259 | set_secondary_compatible_arch (bfd *abfd, int arch) |
8e79c3df | 8260 | { |
91e22acd AS |
8261 | obj_attribute *attr = |
8262 | &elf_known_obj_attributes_proc (abfd)[Tag_also_compatible_with]; | |
8e79c3df | 8263 | |
91e22acd AS |
8264 | if (arch == -1) |
8265 | { | |
8266 | attr->s = NULL; | |
8267 | return; | |
8e79c3df | 8268 | } |
91e22acd AS |
8269 | |
8270 | /* Note: the tag and its argument below are uleb128 values, though | |
8271 | currently-defined values fit in one byte for each. */ | |
8272 | if (!attr->s) | |
8273 | attr->s = bfd_alloc (abfd, 3); | |
8274 | attr->s[0] = Tag_CPU_arch; | |
8275 | attr->s[1] = arch; | |
8276 | attr->s[2] = '\0'; | |
8e79c3df CM |
8277 | } |
8278 | ||
91e22acd AS |
8279 | /* Combine two values for Tag_CPU_arch, taking secondary compatibility tags |
8280 | into account. */ | |
8281 | ||
8282 | static int | |
8283 | tag_cpu_arch_combine (bfd *ibfd, int oldtag, int *secondary_compat_out, | |
8284 | int newtag, int secondary_compat) | |
8e79c3df | 8285 | { |
91e22acd AS |
8286 | #define T(X) TAG_CPU_ARCH_##X |
8287 | int tagl, tagh, result; | |
8288 | const int v6t2[] = | |
8289 | { | |
8290 | T(V6T2), /* PRE_V4. */ | |
8291 | T(V6T2), /* V4. */ | |
8292 | T(V6T2), /* V4T. */ | |
8293 | T(V6T2), /* V5T. */ | |
8294 | T(V6T2), /* V5TE. */ | |
8295 | T(V6T2), /* V5TEJ. */ | |
8296 | T(V6T2), /* V6. */ | |
8297 | T(V7), /* V6KZ. */ | |
8298 | T(V6T2) /* V6T2. */ | |
8299 | }; | |
8300 | const int v6k[] = | |
8301 | { | |
8302 | T(V6K), /* PRE_V4. */ | |
8303 | T(V6K), /* V4. */ | |
8304 | T(V6K), /* V4T. */ | |
8305 | T(V6K), /* V5T. */ | |
8306 | T(V6K), /* V5TE. */ | |
8307 | T(V6K), /* V5TEJ. */ | |
8308 | T(V6K), /* V6. */ | |
8309 | T(V6KZ), /* V6KZ. */ | |
8310 | T(V7), /* V6T2. */ | |
8311 | T(V6K) /* V6K. */ | |
8312 | }; | |
8313 | const int v7[] = | |
8314 | { | |
8315 | T(V7), /* PRE_V4. */ | |
8316 | T(V7), /* V4. */ | |
8317 | T(V7), /* V4T. */ | |
8318 | T(V7), /* V5T. */ | |
8319 | T(V7), /* V5TE. */ | |
8320 | T(V7), /* V5TEJ. */ | |
8321 | T(V7), /* V6. */ | |
8322 | T(V7), /* V6KZ. */ | |
8323 | T(V7), /* V6T2. */ | |
8324 | T(V7), /* V6K. */ | |
8325 | T(V7) /* V7. */ | |
8326 | }; | |
8327 | const int v6_m[] = | |
8328 | { | |
8329 | -1, /* PRE_V4. */ | |
8330 | -1, /* V4. */ | |
8331 | T(V6K), /* V4T. */ | |
8332 | T(V6K), /* V5T. */ | |
8333 | T(V6K), /* V5TE. */ | |
8334 | T(V6K), /* V5TEJ. */ | |
8335 | T(V6K), /* V6. */ | |
8336 | T(V6KZ), /* V6KZ. */ | |
8337 | T(V7), /* V6T2. */ | |
8338 | T(V6K), /* V6K. */ | |
8339 | T(V7), /* V7. */ | |
8340 | T(V6_M) /* V6_M. */ | |
8341 | }; | |
8342 | const int v6s_m[] = | |
8343 | { | |
8344 | -1, /* PRE_V4. */ | |
8345 | -1, /* V4. */ | |
8346 | T(V6K), /* V4T. */ | |
8347 | T(V6K), /* V5T. */ | |
8348 | T(V6K), /* V5TE. */ | |
8349 | T(V6K), /* V5TEJ. */ | |
8350 | T(V6K), /* V6. */ | |
8351 | T(V6KZ), /* V6KZ. */ | |
8352 | T(V7), /* V6T2. */ | |
8353 | T(V6K), /* V6K. */ | |
8354 | T(V7), /* V7. */ | |
8355 | T(V6S_M), /* V6_M. */ | |
8356 | T(V6S_M) /* V6S_M. */ | |
8357 | }; | |
8358 | const int v4t_plus_v6_m[] = | |
8359 | { | |
8360 | -1, /* PRE_V4. */ | |
8361 | -1, /* V4. */ | |
8362 | T(V4T), /* V4T. */ | |
8363 | T(V5T), /* V5T. */ | |
8364 | T(V5TE), /* V5TE. */ | |
8365 | T(V5TEJ), /* V5TEJ. */ | |
8366 | T(V6), /* V6. */ | |
8367 | T(V6KZ), /* V6KZ. */ | |
8368 | T(V6T2), /* V6T2. */ | |
8369 | T(V6K), /* V6K. */ | |
8370 | T(V7), /* V7. */ | |
8371 | T(V6_M), /* V6_M. */ | |
8372 | T(V6S_M), /* V6S_M. */ | |
8373 | T(V4T_PLUS_V6_M) /* V4T plus V6_M. */ | |
8374 | }; | |
8375 | const int *comb[] = | |
8376 | { | |
8377 | v6t2, | |
8378 | v6k, | |
8379 | v7, | |
8380 | v6_m, | |
8381 | v6s_m, | |
8382 | /* Pseudo-architecture. */ | |
8383 | v4t_plus_v6_m | |
8384 | }; | |
8385 | ||
8386 | /* Check we've not got a higher architecture than we know about. */ | |
8387 | ||
8388 | if (oldtag >= MAX_TAG_CPU_ARCH || newtag >= MAX_TAG_CPU_ARCH) | |
8389 | { | |
8390 | _bfd_error_handler (_("ERROR: %B: Unknown CPU architecture"), ibfd); | |
8391 | return -1; | |
8392 | } | |
8393 | ||
8394 | /* Override old tag if we have a Tag_also_compatible_with on the output. */ | |
8395 | ||
8396 | if ((oldtag == T(V6_M) && *secondary_compat_out == T(V4T)) | |
8397 | || (oldtag == T(V4T) && *secondary_compat_out == T(V6_M))) | |
8398 | oldtag = T(V4T_PLUS_V6_M); | |
8399 | ||
8400 | /* And override the new tag if we have a Tag_also_compatible_with on the | |
8401 | input. */ | |
8402 | ||
8403 | if ((newtag == T(V6_M) && secondary_compat == T(V4T)) | |
8404 | || (newtag == T(V4T) && secondary_compat == T(V6_M))) | |
8405 | newtag = T(V4T_PLUS_V6_M); | |
8406 | ||
8407 | tagl = (oldtag < newtag) ? oldtag : newtag; | |
8408 | result = tagh = (oldtag > newtag) ? oldtag : newtag; | |
8409 | ||
8410 | /* Architectures before V6KZ add features monotonically. */ | |
8411 | if (tagh <= TAG_CPU_ARCH_V6KZ) | |
8412 | return result; | |
8413 | ||
8414 | result = comb[tagh - T(V6T2)][tagl]; | |
8415 | ||
8416 | /* Use Tag_CPU_arch == V4T and Tag_also_compatible_with (Tag_CPU_arch V6_M) | |
8417 | as the canonical version. */ | |
8418 | if (result == T(V4T_PLUS_V6_M)) | |
8419 | { | |
8420 | result = T(V4T); | |
8421 | *secondary_compat_out = T(V6_M); | |
8422 | } | |
8423 | else | |
8424 | *secondary_compat_out = -1; | |
8425 | ||
8426 | if (result == -1) | |
8427 | { | |
8428 | _bfd_error_handler (_("ERROR: %B: Conflicting CPU architectures %d/%d"), | |
8429 | ibfd, oldtag, newtag); | |
8430 | return -1; | |
8431 | } | |
8432 | ||
8433 | return result; | |
8434 | #undef T | |
8e79c3df CM |
8435 | } |
8436 | ||
ee065d83 PB |
8437 | /* Merge EABI object attributes from IBFD into OBFD. Raise an error if there |
8438 | are conflicting attributes. */ | |
906e58ca | 8439 | |
ee065d83 PB |
8440 | static bfd_boolean |
8441 | elf32_arm_merge_eabi_attributes (bfd *ibfd, bfd *obfd) | |
8442 | { | |
104d59d1 JM |
8443 | obj_attribute *in_attr; |
8444 | obj_attribute *out_attr; | |
8445 | obj_attribute_list *in_list; | |
8e79c3df | 8446 | obj_attribute_list *out_list; |
91e22acd | 8447 | obj_attribute_list **out_listp; |
ee065d83 PB |
8448 | /* Some tags have 0 = don't care, 1 = strong requirement, |
8449 | 2 = weak requirement. */ | |
91e22acd | 8450 | static const int order_021[3] = {0, 2, 1}; |
b1cc4aeb PB |
8451 | /* For use with Tag_VFP_arch. */ |
8452 | static const int order_01243[5] = {0, 1, 2, 4, 3}; | |
ee065d83 | 8453 | int i; |
91e22acd | 8454 | bfd_boolean result = TRUE; |
ee065d83 | 8455 | |
104d59d1 | 8456 | if (!elf_known_obj_attributes_proc (obfd)[0].i) |
ee065d83 PB |
8457 | { |
8458 | /* This is the first object. Copy the attributes. */ | |
104d59d1 | 8459 | _bfd_elf_copy_obj_attributes (ibfd, obfd); |
004ae526 PB |
8460 | |
8461 | /* Use the Tag_null value to indicate the attributes have been | |
8462 | initialized. */ | |
104d59d1 | 8463 | elf_known_obj_attributes_proc (obfd)[0].i = 1; |
004ae526 | 8464 | |
ee065d83 PB |
8465 | return TRUE; |
8466 | } | |
8467 | ||
104d59d1 JM |
8468 | in_attr = elf_known_obj_attributes_proc (ibfd); |
8469 | out_attr = elf_known_obj_attributes_proc (obfd); | |
ee065d83 PB |
8470 | /* This needs to happen before Tag_ABI_FP_number_model is merged. */ |
8471 | if (in_attr[Tag_ABI_VFP_args].i != out_attr[Tag_ABI_VFP_args].i) | |
8472 | { | |
8e79c3df | 8473 | /* Ignore mismatches if the object doesn't use floating point. */ |
ee065d83 PB |
8474 | if (out_attr[Tag_ABI_FP_number_model].i == 0) |
8475 | out_attr[Tag_ABI_VFP_args].i = in_attr[Tag_ABI_VFP_args].i; | |
8476 | else if (in_attr[Tag_ABI_FP_number_model].i != 0) | |
8477 | { | |
8478 | _bfd_error_handler | |
8479 | (_("ERROR: %B uses VFP register arguments, %B does not"), | |
8480 | ibfd, obfd); | |
91e22acd | 8481 | result = FALSE; |
ee065d83 PB |
8482 | } |
8483 | } | |
8484 | ||
104d59d1 | 8485 | for (i = 4; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++) |
ee065d83 PB |
8486 | { |
8487 | /* Merge this attribute with existing attributes. */ | |
8488 | switch (i) | |
8489 | { | |
8490 | case Tag_CPU_raw_name: | |
8491 | case Tag_CPU_name: | |
91e22acd | 8492 | /* These are merged after Tag_CPU_arch. */ |
ee065d83 PB |
8493 | break; |
8494 | ||
8495 | case Tag_ABI_optimization_goals: | |
8496 | case Tag_ABI_FP_optimization_goals: | |
8497 | /* Use the first value seen. */ | |
8498 | break; | |
8499 | ||
8500 | case Tag_CPU_arch: | |
91e22acd AS |
8501 | { |
8502 | int secondary_compat = -1, secondary_compat_out = -1; | |
8503 | unsigned int saved_out_attr = out_attr[i].i; | |
8504 | static const char *name_table[] = { | |
8505 | /* These aren't real CPU names, but we can't guess | |
8506 | that from the architecture version alone. */ | |
8507 | "Pre v4", | |
8508 | "ARM v4", | |
8509 | "ARM v4T", | |
8510 | "ARM v5T", | |
8511 | "ARM v5TE", | |
8512 | "ARM v5TEJ", | |
8513 | "ARM v6", | |
8514 | "ARM v6KZ", | |
8515 | "ARM v6T2", | |
8516 | "ARM v6K", | |
8517 | "ARM v7", | |
8518 | "ARM v6-M", | |
8519 | "ARM v6S-M" | |
8520 | }; | |
8521 | ||
8522 | /* Merge Tag_CPU_arch and Tag_also_compatible_with. */ | |
8523 | secondary_compat = get_secondary_compatible_arch (ibfd); | |
8524 | secondary_compat_out = get_secondary_compatible_arch (obfd); | |
8525 | out_attr[i].i = tag_cpu_arch_combine (ibfd, out_attr[i].i, | |
8526 | &secondary_compat_out, | |
8527 | in_attr[i].i, | |
8528 | secondary_compat); | |
8529 | set_secondary_compatible_arch (obfd, secondary_compat_out); | |
8530 | ||
8531 | /* Merge Tag_CPU_name and Tag_CPU_raw_name. */ | |
8532 | if (out_attr[i].i == saved_out_attr) | |
8533 | ; /* Leave the names alone. */ | |
8534 | else if (out_attr[i].i == in_attr[i].i) | |
8535 | { | |
8536 | /* The output architecture has been changed to match the | |
8537 | input architecture. Use the input names. */ | |
8538 | out_attr[Tag_CPU_name].s = in_attr[Tag_CPU_name].s | |
8539 | ? _bfd_elf_attr_strdup (obfd, in_attr[Tag_CPU_name].s) | |
8540 | : NULL; | |
8541 | out_attr[Tag_CPU_raw_name].s = in_attr[Tag_CPU_raw_name].s | |
8542 | ? _bfd_elf_attr_strdup (obfd, in_attr[Tag_CPU_raw_name].s) | |
8543 | : NULL; | |
8544 | } | |
8545 | else | |
8546 | { | |
8547 | out_attr[Tag_CPU_name].s = NULL; | |
8548 | out_attr[Tag_CPU_raw_name].s = NULL; | |
8549 | } | |
8550 | ||
8551 | /* If we still don't have a value for Tag_CPU_name, | |
8552 | make one up now. Tag_CPU_raw_name remains blank. */ | |
8553 | if (out_attr[Tag_CPU_name].s == NULL | |
8554 | && out_attr[i].i < ARRAY_SIZE (name_table)) | |
8555 | out_attr[Tag_CPU_name].s = | |
8556 | _bfd_elf_attr_strdup (obfd, name_table[out_attr[i].i]); | |
8557 | } | |
8558 | break; | |
8559 | ||
ee065d83 PB |
8560 | case Tag_ARM_ISA_use: |
8561 | case Tag_THUMB_ISA_use: | |
ee065d83 | 8562 | case Tag_WMMX_arch: |
91e22acd AS |
8563 | case Tag_Advanced_SIMD_arch: |
8564 | /* ??? Do Advanced_SIMD (NEON) and WMMX conflict? */ | |
ee065d83 | 8565 | case Tag_ABI_FP_rounding: |
ee065d83 PB |
8566 | case Tag_ABI_FP_exceptions: |
8567 | case Tag_ABI_FP_user_exceptions: | |
8568 | case Tag_ABI_FP_number_model: | |
91e22acd AS |
8569 | case Tag_VFP_HP_extension: |
8570 | case Tag_CPU_unaligned_access: | |
8571 | case Tag_T2EE_use: | |
8572 | case Tag_Virtualization_use: | |
8573 | case Tag_MPextension_use: | |
ee065d83 PB |
8574 | /* Use the largest value specified. */ |
8575 | if (in_attr[i].i > out_attr[i].i) | |
8576 | out_attr[i].i = in_attr[i].i; | |
8577 | break; | |
8578 | ||
91e22acd AS |
8579 | case Tag_ABI_align8_preserved: |
8580 | case Tag_ABI_PCS_RO_data: | |
8581 | /* Use the smallest value specified. */ | |
8582 | if (in_attr[i].i < out_attr[i].i) | |
8583 | out_attr[i].i = in_attr[i].i; | |
8584 | break; | |
8585 | ||
8586 | case Tag_ABI_align8_needed: | |
8587 | if ((in_attr[i].i > 0 || out_attr[i].i > 0) | |
8588 | && (in_attr[Tag_ABI_align8_preserved].i == 0 | |
8589 | || out_attr[Tag_ABI_align8_preserved].i == 0)) | |
ee065d83 | 8590 | { |
91e22acd AS |
8591 | /* This error message should be enabled once all non-conformant |
8592 | binaries in the toolchain have had the attributes set | |
8593 | properly. | |
ee065d83 | 8594 | _bfd_error_handler |
91e22acd AS |
8595 | (_("ERROR: %B: 8-byte data alignment conflicts with %B"), |
8596 | obfd, ibfd); | |
8597 | result = FALSE; */ | |
ee065d83 | 8598 | } |
91e22acd AS |
8599 | /* Fall through. */ |
8600 | case Tag_ABI_FP_denormal: | |
8601 | case Tag_ABI_PCS_GOT_use: | |
8602 | /* Use the "greatest" from the sequence 0, 2, 1, or the largest | |
8603 | value if greater than 2 (for future-proofing). */ | |
8604 | if ((in_attr[i].i > 2 && in_attr[i].i > out_attr[i].i) | |
8605 | || (in_attr[i].i <= 2 && out_attr[i].i <= 2 | |
8606 | && order_021[in_attr[i].i] > order_021[out_attr[i].i])) | |
ee065d83 PB |
8607 | out_attr[i].i = in_attr[i].i; |
8608 | break; | |
91e22acd AS |
8609 | |
8610 | ||
8611 | case Tag_CPU_arch_profile: | |
8612 | if (out_attr[i].i != in_attr[i].i) | |
8613 | { | |
8614 | /* 0 will merge with anything. | |
8615 | 'A' and 'S' merge to 'A'. | |
8616 | 'R' and 'S' merge to 'R'. | |
8617 | 'M' and 'A|R|S' is an error. */ | |
8618 | if (out_attr[i].i == 0 | |
8619 | || (out_attr[i].i == 'S' | |
8620 | && (in_attr[i].i == 'A' || in_attr[i].i == 'R'))) | |
8621 | out_attr[i].i = in_attr[i].i; | |
8622 | else if (in_attr[i].i == 0 | |
8623 | || (in_attr[i].i == 'S' | |
8624 | && (out_attr[i].i == 'A' || out_attr[i].i == 'R'))) | |
8625 | ; /* Do nothing. */ | |
8626 | else | |
8627 | { | |
8628 | _bfd_error_handler | |
8629 | (_("ERROR: %B: Conflicting architecture profiles %c/%c"), | |
8630 | ibfd, | |
8631 | in_attr[i].i ? in_attr[i].i : '0', | |
8632 | out_attr[i].i ? out_attr[i].i : '0'); | |
8633 | result = FALSE; | |
8634 | } | |
8635 | } | |
8636 | break; | |
b1cc4aeb | 8637 | case Tag_VFP_arch: |
91e22acd AS |
8638 | /* Use the "greatest" from the sequence 0, 1, 2, 4, 3, or the |
8639 | largest value if greater than 4 (for future-proofing). */ | |
8640 | if ((in_attr[i].i > 4 && in_attr[i].i > out_attr[i].i) | |
8641 | || (in_attr[i].i <= 4 && out_attr[i].i <= 4 | |
8642 | && order_01243[in_attr[i].i] > order_01243[out_attr[i].i])) | |
b1cc4aeb PB |
8643 | out_attr[i].i = in_attr[i].i; |
8644 | break; | |
ee065d83 PB |
8645 | case Tag_PCS_config: |
8646 | if (out_attr[i].i == 0) | |
8647 | out_attr[i].i = in_attr[i].i; | |
8648 | else if (in_attr[i].i != 0 && out_attr[i].i != 0) | |
8649 | { | |
8650 | /* It's sometimes ok to mix different configs, so this is only | |
8651 | a warning. */ | |
8652 | _bfd_error_handler | |
8653 | (_("Warning: %B: Conflicting platform configuration"), ibfd); | |
8654 | } | |
8655 | break; | |
8656 | case Tag_ABI_PCS_R9_use: | |
004ae526 PB |
8657 | if (in_attr[i].i != out_attr[i].i |
8658 | && out_attr[i].i != AEABI_R9_unused | |
ee065d83 PB |
8659 | && in_attr[i].i != AEABI_R9_unused) |
8660 | { | |
8661 | _bfd_error_handler | |
8662 | (_("ERROR: %B: Conflicting use of R9"), ibfd); | |
91e22acd | 8663 | result = FALSE; |
ee065d83 PB |
8664 | } |
8665 | if (out_attr[i].i == AEABI_R9_unused) | |
8666 | out_attr[i].i = in_attr[i].i; | |
8667 | break; | |
8668 | case Tag_ABI_PCS_RW_data: | |
8669 | if (in_attr[i].i == AEABI_PCS_RW_data_SBrel | |
8670 | && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_SB | |
8671 | && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_unused) | |
8672 | { | |
8673 | _bfd_error_handler | |
8674 | (_("ERROR: %B: SB relative addressing conflicts with use of R9"), | |
8675 | ibfd); | |
91e22acd | 8676 | result = FALSE; |
ee065d83 PB |
8677 | } |
8678 | /* Use the smallest value specified. */ | |
8679 | if (in_attr[i].i < out_attr[i].i) | |
8680 | out_attr[i].i = in_attr[i].i; | |
8681 | break; | |
ee065d83 | 8682 | case Tag_ABI_PCS_wchar_t: |
a9dc9481 JM |
8683 | if (out_attr[i].i && in_attr[i].i && out_attr[i].i != in_attr[i].i |
8684 | && !elf_arm_tdata (obfd)->no_wchar_size_warning) | |
ee065d83 PB |
8685 | { |
8686 | _bfd_error_handler | |
a9dc9481 JM |
8687 | (_("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"), |
8688 | ibfd, in_attr[i].i, out_attr[i].i); | |
ee065d83 | 8689 | } |
a9dc9481 | 8690 | else if (in_attr[i].i && !out_attr[i].i) |
ee065d83 PB |
8691 | out_attr[i].i = in_attr[i].i; |
8692 | break; | |
ee065d83 PB |
8693 | case Tag_ABI_enum_size: |
8694 | if (in_attr[i].i != AEABI_enum_unused) | |
8695 | { | |
8696 | if (out_attr[i].i == AEABI_enum_unused | |
8697 | || out_attr[i].i == AEABI_enum_forced_wide) | |
8698 | { | |
8699 | /* The existing object is compatible with anything. | |
8700 | Use whatever requirements the new object has. */ | |
8701 | out_attr[i].i = in_attr[i].i; | |
8702 | } | |
8703 | else if (in_attr[i].i != AEABI_enum_forced_wide | |
bf21ed78 | 8704 | && out_attr[i].i != in_attr[i].i |
0ffa91dd | 8705 | && !elf_arm_tdata (obfd)->no_enum_size_warning) |
ee065d83 | 8706 | { |
91e22acd | 8707 | static const char *aeabi_enum_names[] = |
bf21ed78 | 8708 | { "", "variable-size", "32-bit", "" }; |
91e22acd AS |
8709 | const char *in_name = |
8710 | in_attr[i].i < ARRAY_SIZE(aeabi_enum_names) | |
8711 | ? aeabi_enum_names[in_attr[i].i] | |
8712 | : "<unknown>"; | |
8713 | const char *out_name = | |
8714 | out_attr[i].i < ARRAY_SIZE(aeabi_enum_names) | |
8715 | ? aeabi_enum_names[out_attr[i].i] | |
8716 | : "<unknown>"; | |
ee065d83 | 8717 | _bfd_error_handler |
bf21ed78 | 8718 | (_("warning: %B uses %s enums yet the output is to use %s enums; use of enum values across objects may fail"), |
91e22acd | 8719 | ibfd, in_name, out_name); |
ee065d83 PB |
8720 | } |
8721 | } | |
8722 | break; | |
8723 | case Tag_ABI_VFP_args: | |
8724 | /* Aready done. */ | |
8725 | break; | |
8726 | case Tag_ABI_WMMX_args: | |
8727 | if (in_attr[i].i != out_attr[i].i) | |
8728 | { | |
8729 | _bfd_error_handler | |
8730 | (_("ERROR: %B uses iWMMXt register arguments, %B does not"), | |
8731 | ibfd, obfd); | |
91e22acd | 8732 | result = FALSE; |
ee065d83 PB |
8733 | } |
8734 | break; | |
7b86a9fa AS |
8735 | case Tag_compatibility: |
8736 | /* Merged in target-independent code. */ | |
8737 | break; | |
91e22acd AS |
8738 | case Tag_ABI_HardFP_use: |
8739 | /* 1 (SP) and 2 (DP) conflict, so combine to 3 (SP & DP). */ | |
8740 | if ((in_attr[i].i == 1 && out_attr[i].i == 2) | |
8741 | || (in_attr[i].i == 2 && out_attr[i].i == 1)) | |
8742 | out_attr[i].i = 3; | |
8743 | else if (in_attr[i].i > out_attr[i].i) | |
8744 | out_attr[i].i = in_attr[i].i; | |
8745 | break; | |
8746 | case Tag_ABI_FP_16bit_format: | |
8747 | if (in_attr[i].i != 0 && out_attr[i].i != 0) | |
8748 | { | |
8749 | if (in_attr[i].i != out_attr[i].i) | |
8750 | { | |
8751 | _bfd_error_handler | |
8752 | (_("ERROR: fp16 format mismatch between %B and %B"), | |
8753 | ibfd, obfd); | |
8754 | result = FALSE; | |
8755 | } | |
8756 | } | |
8757 | if (in_attr[i].i != 0) | |
8758 | out_attr[i].i = in_attr[i].i; | |
8759 | break; | |
7b86a9fa | 8760 | |
91e22acd | 8761 | case Tag_nodefaults: |
2d0bb761 AS |
8762 | /* This tag is set if it exists, but the value is unused (and is |
8763 | typically zero). We don't actually need to do anything here - | |
8764 | the merge happens automatically when the type flags are merged | |
8765 | below. */ | |
91e22acd AS |
8766 | break; |
8767 | case Tag_also_compatible_with: | |
8768 | /* Already done in Tag_CPU_arch. */ | |
8769 | break; | |
8770 | case Tag_conformance: | |
8771 | /* Keep the attribute if it matches. Throw it away otherwise. | |
8772 | No attribute means no claim to conform. */ | |
8773 | if (!in_attr[i].s || !out_attr[i].s | |
8774 | || strcmp (in_attr[i].s, out_attr[i].s) != 0) | |
8775 | out_attr[i].s = NULL; | |
8776 | break; | |
3cfad14c | 8777 | |
91e22acd | 8778 | default: |
3cfad14c | 8779 | { |
91e22acd AS |
8780 | bfd *err_bfd = NULL; |
8781 | ||
8782 | /* The "known_obj_attributes" table does contain some undefined | |
8783 | attributes. Ensure that there are unused. */ | |
8784 | if (out_attr[i].i != 0 || out_attr[i].s != NULL) | |
8785 | err_bfd = obfd; | |
8786 | else if (in_attr[i].i != 0 || in_attr[i].s != NULL) | |
8787 | err_bfd = ibfd; | |
8788 | ||
8789 | if (err_bfd != NULL) | |
8790 | { | |
8791 | /* Attribute numbers >=64 (mod 128) can be safely ignored. */ | |
8792 | if ((i & 127) < 64) | |
8793 | { | |
8794 | _bfd_error_handler | |
8795 | (_("%B: Unknown mandatory EABI object attribute %d"), | |
8796 | err_bfd, i); | |
8797 | bfd_set_error (bfd_error_bad_value); | |
8798 | result = FALSE; | |
8799 | } | |
8800 | else | |
8801 | { | |
8802 | _bfd_error_handler | |
8803 | (_("Warning: %B: Unknown EABI object attribute %d"), | |
8804 | err_bfd, i); | |
8805 | } | |
8806 | } | |
8807 | ||
8808 | /* Only pass on attributes that match in both inputs. */ | |
8809 | if (in_attr[i].i != out_attr[i].i | |
8810 | || in_attr[i].s != out_attr[i].s | |
8811 | || (in_attr[i].s != NULL && out_attr[i].s != NULL | |
8812 | && strcmp (in_attr[i].s, out_attr[i].s) != 0)) | |
8813 | { | |
8814 | out_attr[i].i = 0; | |
8815 | out_attr[i].s = NULL; | |
8816 | } | |
3cfad14c | 8817 | } |
91e22acd AS |
8818 | } |
8819 | ||
8820 | /* If out_attr was copied from in_attr then it won't have a type yet. */ | |
8821 | if (in_attr[i].type && !out_attr[i].type) | |
8822 | out_attr[i].type = in_attr[i].type; | |
ee065d83 PB |
8823 | } |
8824 | ||
104d59d1 JM |
8825 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
8826 | _bfd_elf_merge_object_attributes (ibfd, obfd); | |
ee065d83 | 8827 | |
104d59d1 JM |
8828 | /* Check for any attributes not known on ARM. */ |
8829 | in_list = elf_other_obj_attributes_proc (ibfd); | |
91e22acd AS |
8830 | out_listp = &elf_other_obj_attributes_proc (obfd); |
8831 | out_list = *out_listp; | |
8e79c3df | 8832 | |
91e22acd | 8833 | for (; in_list || out_list; ) |
ee065d83 | 8834 | { |
91e22acd AS |
8835 | bfd *err_bfd = NULL; |
8836 | int err_tag = 0; | |
8e79c3df CM |
8837 | |
8838 | /* The tags for each list are in numerical order. */ | |
8839 | /* If the tags are equal, then merge. */ | |
91e22acd | 8840 | if (out_list && (!in_list || in_list->tag > out_list->tag)) |
8e79c3df | 8841 | { |
91e22acd AS |
8842 | /* This attribute only exists in obfd. We can't merge, and we don't |
8843 | know what the tag means, so delete it. */ | |
8844 | err_bfd = obfd; | |
8845 | err_tag = out_list->tag; | |
8846 | *out_listp = out_list->next; | |
8847 | out_list = *out_listp; | |
8e79c3df | 8848 | } |
91e22acd | 8849 | else if (in_list && (!out_list || in_list->tag < out_list->tag)) |
8e79c3df | 8850 | { |
91e22acd AS |
8851 | /* This attribute only exists in ibfd. We can't merge, and we don't |
8852 | know what the tag means, so ignore it. */ | |
8853 | err_bfd = ibfd; | |
8854 | err_tag = in_list->tag; | |
8e79c3df | 8855 | in_list = in_list->next; |
eb111b1f | 8856 | } |
91e22acd AS |
8857 | else /* The tags are equal. */ |
8858 | { | |
8859 | /* As present, all attributes in the list are unknown, and | |
8860 | therefore can't be merged meaningfully. */ | |
8861 | err_bfd = obfd; | |
8862 | err_tag = out_list->tag; | |
8863 | ||
8864 | /* Only pass on attributes that match in both inputs. */ | |
8865 | if (in_list->attr.i != out_list->attr.i | |
8866 | || in_list->attr.s != out_list->attr.s | |
8867 | || (in_list->attr.s && out_list->attr.s | |
8868 | && strcmp (in_list->attr.s, out_list->attr.s) != 0)) | |
8869 | { | |
8870 | /* No match. Delete the attribute. */ | |
8871 | *out_listp = out_list->next; | |
8872 | out_list = *out_listp; | |
8873 | } | |
8874 | else | |
8875 | { | |
8876 | /* Matched. Keep the attribute and move to the next. */ | |
8877 | out_list = out_list->next; | |
8878 | in_list = in_list->next; | |
8879 | } | |
8880 | } | |
8881 | ||
8882 | if (err_bfd) | |
8883 | { | |
8884 | /* Attribute numbers >=64 (mod 128) can be safely ignored. */ | |
8885 | if ((err_tag & 127) < 64) | |
8886 | { | |
8887 | _bfd_error_handler | |
8888 | (_("%B: Unknown mandatory EABI object attribute %d"), | |
8889 | err_bfd, err_tag); | |
8890 | bfd_set_error (bfd_error_bad_value); | |
8891 | result = FALSE; | |
8892 | } | |
8893 | else | |
8894 | { | |
8895 | _bfd_error_handler | |
8896 | (_("Warning: %B: Unknown EABI object attribute %d"), | |
8897 | err_bfd, err_tag); | |
8898 | } | |
8899 | } | |
ee065d83 | 8900 | } |
91e22acd | 8901 | return result; |
252b5132 RH |
8902 | } |
8903 | ||
3a4a14e9 PB |
8904 | |
8905 | /* Return TRUE if the two EABI versions are incompatible. */ | |
8906 | ||
8907 | static bfd_boolean | |
8908 | elf32_arm_versions_compatible (unsigned iver, unsigned over) | |
8909 | { | |
8910 | /* v4 and v5 are the same spec before and after it was released, | |
8911 | so allow mixing them. */ | |
8912 | if ((iver == EF_ARM_EABI_VER4 && over == EF_ARM_EABI_VER5) | |
8913 | || (iver == EF_ARM_EABI_VER5 && over == EF_ARM_EABI_VER4)) | |
8914 | return TRUE; | |
8915 | ||
8916 | return (iver == over); | |
8917 | } | |
8918 | ||
252b5132 RH |
8919 | /* Merge backend specific data from an object file to the output |
8920 | object file when linking. */ | |
9b485d32 | 8921 | |
b34976b6 | 8922 | static bfd_boolean |
57e8b36a | 8923 | elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd) |
252b5132 RH |
8924 | { |
8925 | flagword out_flags; | |
8926 | flagword in_flags; | |
b34976b6 | 8927 | bfd_boolean flags_compatible = TRUE; |
cf919dfd | 8928 | asection *sec; |
252b5132 | 8929 | |
9b485d32 | 8930 | /* Check if we have the same endianess. */ |
82e51918 | 8931 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) |
b34976b6 | 8932 | return FALSE; |
1fe494a5 | 8933 | |
0ffa91dd | 8934 | if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd)) |
b34976b6 | 8935 | return TRUE; |
252b5132 | 8936 | |
ee065d83 PB |
8937 | if (!elf32_arm_merge_eabi_attributes (ibfd, obfd)) |
8938 | return FALSE; | |
8939 | ||
252b5132 RH |
8940 | /* The input BFD must have had its flags initialised. */ |
8941 | /* The following seems bogus to me -- The flags are initialized in | |
8942 | the assembler but I don't think an elf_flags_init field is | |
9b485d32 | 8943 | written into the object. */ |
252b5132 RH |
8944 | /* BFD_ASSERT (elf_flags_init (ibfd)); */ |
8945 | ||
8946 | in_flags = elf_elfheader (ibfd)->e_flags; | |
8947 | out_flags = elf_elfheader (obfd)->e_flags; | |
8948 | ||
23684067 PB |
8949 | /* In theory there is no reason why we couldn't handle this. However |
8950 | in practice it isn't even close to working and there is no real | |
8951 | reason to want it. */ | |
8952 | if (EF_ARM_EABI_VERSION (in_flags) >= EF_ARM_EABI_VER4 | |
c13bb2ea | 8953 | && !(ibfd->flags & DYNAMIC) |
23684067 PB |
8954 | && (in_flags & EF_ARM_BE8)) |
8955 | { | |
8029a119 | 8956 | _bfd_error_handler (_("ERROR: %B is already in final BE8 format"), |
23684067 PB |
8957 | ibfd); |
8958 | return FALSE; | |
8959 | } | |
8960 | ||
252b5132 RH |
8961 | if (!elf_flags_init (obfd)) |
8962 | { | |
fe077fa6 NC |
8963 | /* If the input is the default architecture and had the default |
8964 | flags then do not bother setting the flags for the output | |
8965 | architecture, instead allow future merges to do this. If no | |
8966 | future merges ever set these flags then they will retain their | |
8967 | uninitialised values, which surprise surprise, correspond | |
252b5132 | 8968 | to the default values. */ |
fe077fa6 NC |
8969 | if (bfd_get_arch_info (ibfd)->the_default |
8970 | && elf_elfheader (ibfd)->e_flags == 0) | |
b34976b6 | 8971 | return TRUE; |
252b5132 | 8972 | |
b34976b6 | 8973 | elf_flags_init (obfd) = TRUE; |
252b5132 RH |
8974 | elf_elfheader (obfd)->e_flags = in_flags; |
8975 | ||
8976 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
8977 | && bfd_get_arch_info (obfd)->the_default) | |
8978 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); | |
8979 | ||
b34976b6 | 8980 | return TRUE; |
252b5132 RH |
8981 | } |
8982 | ||
5a6c6817 NC |
8983 | /* Determine what should happen if the input ARM architecture |
8984 | does not match the output ARM architecture. */ | |
8985 | if (! bfd_arm_merge_machines (ibfd, obfd)) | |
8986 | return FALSE; | |
e16bb312 | 8987 | |
1006ba19 | 8988 | /* Identical flags must be compatible. */ |
252b5132 | 8989 | if (in_flags == out_flags) |
b34976b6 | 8990 | return TRUE; |
252b5132 | 8991 | |
35a0f415 DJ |
8992 | /* Check to see if the input BFD actually contains any sections. If |
8993 | not, its flags may not have been initialised either, but it | |
8e3de13a | 8994 | cannot actually cause any incompatiblity. Do not short-circuit |
35a0f415 | 8995 | dynamic objects; their section list may be emptied by |
d1f161ea | 8996 | elf_link_add_object_symbols. |
35a0f415 | 8997 | |
d1f161ea NC |
8998 | Also check to see if there are no code sections in the input. |
8999 | In this case there is no need to check for code specific flags. | |
9000 | XXX - do we need to worry about floating-point format compatability | |
9001 | in data sections ? */ | |
35a0f415 | 9002 | if (!(ibfd->flags & DYNAMIC)) |
cf919dfd | 9003 | { |
35a0f415 | 9004 | bfd_boolean null_input_bfd = TRUE; |
d1f161ea | 9005 | bfd_boolean only_data_sections = TRUE; |
35a0f415 DJ |
9006 | |
9007 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
cf919dfd | 9008 | { |
35a0f415 DJ |
9009 | /* Ignore synthetic glue sections. */ |
9010 | if (strcmp (sec->name, ".glue_7") | |
9011 | && strcmp (sec->name, ".glue_7t")) | |
9012 | { | |
d1f161ea NC |
9013 | if ((bfd_get_section_flags (ibfd, sec) |
9014 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
9015 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
9016 | only_data_sections = FALSE; | |
9017 | ||
35a0f415 DJ |
9018 | null_input_bfd = FALSE; |
9019 | break; | |
9020 | } | |
cf919dfd | 9021 | } |
d1f161ea NC |
9022 | |
9023 | if (null_input_bfd || only_data_sections) | |
35a0f415 | 9024 | return TRUE; |
cf919dfd | 9025 | } |
cf919dfd | 9026 | |
252b5132 | 9027 | /* Complain about various flag mismatches. */ |
3a4a14e9 PB |
9028 | if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags), |
9029 | EF_ARM_EABI_VERSION (out_flags))) | |
fc830a83 | 9030 | { |
d003868e | 9031 | _bfd_error_handler |
3656d5e3 | 9032 | (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"), |
d003868e AM |
9033 | ibfd, obfd, |
9034 | (in_flags & EF_ARM_EABIMASK) >> 24, | |
9035 | (out_flags & EF_ARM_EABIMASK) >> 24); | |
b34976b6 | 9036 | return FALSE; |
fc830a83 | 9037 | } |
252b5132 | 9038 | |
1006ba19 | 9039 | /* Not sure what needs to be checked for EABI versions >= 1. */ |
00a97672 RS |
9040 | /* VxWorks libraries do not use these flags. */ |
9041 | if (get_elf_backend_data (obfd) != &elf32_arm_vxworks_bed | |
9042 | && get_elf_backend_data (ibfd) != &elf32_arm_vxworks_bed | |
9043 | && EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN) | |
1006ba19 | 9044 | { |
fd2ec330 | 9045 | if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26)) |
1006ba19 | 9046 | { |
d003868e AM |
9047 | _bfd_error_handler |
9048 | (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"), | |
9049 | ibfd, obfd, | |
9050 | in_flags & EF_ARM_APCS_26 ? 26 : 32, | |
9051 | out_flags & EF_ARM_APCS_26 ? 26 : 32); | |
b34976b6 | 9052 | flags_compatible = FALSE; |
1006ba19 | 9053 | } |
252b5132 | 9054 | |
fd2ec330 | 9055 | if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT)) |
1006ba19 | 9056 | { |
5eefb65f | 9057 | if (in_flags & EF_ARM_APCS_FLOAT) |
d003868e AM |
9058 | _bfd_error_handler |
9059 | (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"), | |
9060 | ibfd, obfd); | |
5eefb65f | 9061 | else |
d003868e AM |
9062 | _bfd_error_handler |
9063 | (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"), | |
9064 | ibfd, obfd); | |
63b0f745 | 9065 | |
b34976b6 | 9066 | flags_compatible = FALSE; |
1006ba19 | 9067 | } |
252b5132 | 9068 | |
96a846ea | 9069 | if ((in_flags & EF_ARM_VFP_FLOAT) != (out_flags & EF_ARM_VFP_FLOAT)) |
1006ba19 | 9070 | { |
96a846ea | 9071 | if (in_flags & EF_ARM_VFP_FLOAT) |
d003868e AM |
9072 | _bfd_error_handler |
9073 | (_("ERROR: %B uses VFP instructions, whereas %B does not"), | |
9074 | ibfd, obfd); | |
5eefb65f | 9075 | else |
d003868e AM |
9076 | _bfd_error_handler |
9077 | (_("ERROR: %B uses FPA instructions, whereas %B does not"), | |
9078 | ibfd, obfd); | |
fde78edd NC |
9079 | |
9080 | flags_compatible = FALSE; | |
9081 | } | |
9082 | ||
9083 | if ((in_flags & EF_ARM_MAVERICK_FLOAT) != (out_flags & EF_ARM_MAVERICK_FLOAT)) | |
9084 | { | |
9085 | if (in_flags & EF_ARM_MAVERICK_FLOAT) | |
d003868e AM |
9086 | _bfd_error_handler |
9087 | (_("ERROR: %B uses Maverick instructions, whereas %B does not"), | |
9088 | ibfd, obfd); | |
fde78edd | 9089 | else |
d003868e AM |
9090 | _bfd_error_handler |
9091 | (_("ERROR: %B does not use Maverick instructions, whereas %B does"), | |
9092 | ibfd, obfd); | |
63b0f745 | 9093 | |
b34976b6 | 9094 | flags_compatible = FALSE; |
1006ba19 | 9095 | } |
96a846ea RE |
9096 | |
9097 | #ifdef EF_ARM_SOFT_FLOAT | |
9098 | if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT)) | |
9099 | { | |
9100 | /* We can allow interworking between code that is VFP format | |
9101 | layout, and uses either soft float or integer regs for | |
9102 | passing floating point arguments and results. We already | |
9103 | know that the APCS_FLOAT flags match; similarly for VFP | |
9104 | flags. */ | |
9105 | if ((in_flags & EF_ARM_APCS_FLOAT) != 0 | |
9106 | || (in_flags & EF_ARM_VFP_FLOAT) == 0) | |
9107 | { | |
9108 | if (in_flags & EF_ARM_SOFT_FLOAT) | |
d003868e AM |
9109 | _bfd_error_handler |
9110 | (_("ERROR: %B uses software FP, whereas %B uses hardware FP"), | |
9111 | ibfd, obfd); | |
96a846ea | 9112 | else |
d003868e AM |
9113 | _bfd_error_handler |
9114 | (_("ERROR: %B uses hardware FP, whereas %B uses software FP"), | |
9115 | ibfd, obfd); | |
96a846ea | 9116 | |
b34976b6 | 9117 | flags_compatible = FALSE; |
96a846ea RE |
9118 | } |
9119 | } | |
ee43f35e | 9120 | #endif |
252b5132 | 9121 | |
1006ba19 | 9122 | /* Interworking mismatch is only a warning. */ |
fd2ec330 | 9123 | if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK)) |
8f615d07 | 9124 | { |
e3c8793a NC |
9125 | if (in_flags & EF_ARM_INTERWORK) |
9126 | { | |
d003868e AM |
9127 | _bfd_error_handler |
9128 | (_("Warning: %B supports interworking, whereas %B does not"), | |
9129 | ibfd, obfd); | |
e3c8793a NC |
9130 | } |
9131 | else | |
9132 | { | |
d003868e AM |
9133 | _bfd_error_handler |
9134 | (_("Warning: %B does not support interworking, whereas %B does"), | |
9135 | ibfd, obfd); | |
e3c8793a | 9136 | } |
8f615d07 | 9137 | } |
252b5132 | 9138 | } |
63b0f745 | 9139 | |
1006ba19 | 9140 | return flags_compatible; |
252b5132 RH |
9141 | } |
9142 | ||
9b485d32 NC |
9143 | /* Display the flags field. */ |
9144 | ||
b34976b6 | 9145 | static bfd_boolean |
57e8b36a | 9146 | elf32_arm_print_private_bfd_data (bfd *abfd, void * ptr) |
252b5132 | 9147 | { |
fc830a83 NC |
9148 | FILE * file = (FILE *) ptr; |
9149 | unsigned long flags; | |
252b5132 RH |
9150 | |
9151 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
9152 | ||
9153 | /* Print normal ELF private data. */ | |
9154 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
9155 | ||
fc830a83 | 9156 | flags = elf_elfheader (abfd)->e_flags; |
9b485d32 NC |
9157 | /* Ignore init flag - it may not be set, despite the flags field |
9158 | containing valid data. */ | |
252b5132 RH |
9159 | |
9160 | /* xgettext:c-format */ | |
9b485d32 | 9161 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); |
252b5132 | 9162 | |
fc830a83 NC |
9163 | switch (EF_ARM_EABI_VERSION (flags)) |
9164 | { | |
9165 | case EF_ARM_EABI_UNKNOWN: | |
4cc11e76 | 9166 | /* The following flag bits are GNU extensions and not part of the |
fc830a83 NC |
9167 | official ARM ELF extended ABI. Hence they are only decoded if |
9168 | the EABI version is not set. */ | |
fd2ec330 | 9169 | if (flags & EF_ARM_INTERWORK) |
9b485d32 | 9170 | fprintf (file, _(" [interworking enabled]")); |
9a5aca8c | 9171 | |
fd2ec330 | 9172 | if (flags & EF_ARM_APCS_26) |
6c571f00 | 9173 | fprintf (file, " [APCS-26]"); |
fc830a83 | 9174 | else |
6c571f00 | 9175 | fprintf (file, " [APCS-32]"); |
9a5aca8c | 9176 | |
96a846ea RE |
9177 | if (flags & EF_ARM_VFP_FLOAT) |
9178 | fprintf (file, _(" [VFP float format]")); | |
fde78edd NC |
9179 | else if (flags & EF_ARM_MAVERICK_FLOAT) |
9180 | fprintf (file, _(" [Maverick float format]")); | |
96a846ea RE |
9181 | else |
9182 | fprintf (file, _(" [FPA float format]")); | |
9183 | ||
fd2ec330 | 9184 | if (flags & EF_ARM_APCS_FLOAT) |
9b485d32 | 9185 | fprintf (file, _(" [floats passed in float registers]")); |
9a5aca8c | 9186 | |
fd2ec330 | 9187 | if (flags & EF_ARM_PIC) |
9b485d32 | 9188 | fprintf (file, _(" [position independent]")); |
fc830a83 | 9189 | |
fd2ec330 | 9190 | if (flags & EF_ARM_NEW_ABI) |
9b485d32 | 9191 | fprintf (file, _(" [new ABI]")); |
9a5aca8c | 9192 | |
fd2ec330 | 9193 | if (flags & EF_ARM_OLD_ABI) |
9b485d32 | 9194 | fprintf (file, _(" [old ABI]")); |
9a5aca8c | 9195 | |
fd2ec330 | 9196 | if (flags & EF_ARM_SOFT_FLOAT) |
9b485d32 | 9197 | fprintf (file, _(" [software FP]")); |
9a5aca8c | 9198 | |
96a846ea RE |
9199 | flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT |
9200 | | EF_ARM_PIC | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI | |
fde78edd NC |
9201 | | EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT |
9202 | | EF_ARM_MAVERICK_FLOAT); | |
fc830a83 | 9203 | break; |
9a5aca8c | 9204 | |
fc830a83 | 9205 | case EF_ARM_EABI_VER1: |
9b485d32 | 9206 | fprintf (file, _(" [Version1 EABI]")); |
9a5aca8c | 9207 | |
fc830a83 | 9208 | if (flags & EF_ARM_SYMSARESORTED) |
9b485d32 | 9209 | fprintf (file, _(" [sorted symbol table]")); |
fc830a83 | 9210 | else |
9b485d32 | 9211 | fprintf (file, _(" [unsorted symbol table]")); |
9a5aca8c | 9212 | |
fc830a83 NC |
9213 | flags &= ~ EF_ARM_SYMSARESORTED; |
9214 | break; | |
9a5aca8c | 9215 | |
fd2ec330 PB |
9216 | case EF_ARM_EABI_VER2: |
9217 | fprintf (file, _(" [Version2 EABI]")); | |
9218 | ||
9219 | if (flags & EF_ARM_SYMSARESORTED) | |
9220 | fprintf (file, _(" [sorted symbol table]")); | |
9221 | else | |
9222 | fprintf (file, _(" [unsorted symbol table]")); | |
9223 | ||
9224 | if (flags & EF_ARM_DYNSYMSUSESEGIDX) | |
9225 | fprintf (file, _(" [dynamic symbols use segment index]")); | |
9226 | ||
9227 | if (flags & EF_ARM_MAPSYMSFIRST) | |
9228 | fprintf (file, _(" [mapping symbols precede others]")); | |
9229 | ||
99e4ae17 | 9230 | flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX |
fd2ec330 PB |
9231 | | EF_ARM_MAPSYMSFIRST); |
9232 | break; | |
9233 | ||
d507cf36 PB |
9234 | case EF_ARM_EABI_VER3: |
9235 | fprintf (file, _(" [Version3 EABI]")); | |
8cb51566 PB |
9236 | break; |
9237 | ||
9238 | case EF_ARM_EABI_VER4: | |
9239 | fprintf (file, _(" [Version4 EABI]")); | |
3a4a14e9 | 9240 | goto eabi; |
d507cf36 | 9241 | |
3a4a14e9 PB |
9242 | case EF_ARM_EABI_VER5: |
9243 | fprintf (file, _(" [Version5 EABI]")); | |
9244 | eabi: | |
d507cf36 PB |
9245 | if (flags & EF_ARM_BE8) |
9246 | fprintf (file, _(" [BE8]")); | |
9247 | ||
9248 | if (flags & EF_ARM_LE8) | |
9249 | fprintf (file, _(" [LE8]")); | |
9250 | ||
9251 | flags &= ~(EF_ARM_LE8 | EF_ARM_BE8); | |
9252 | break; | |
9253 | ||
fc830a83 | 9254 | default: |
9b485d32 | 9255 | fprintf (file, _(" <EABI version unrecognised>")); |
fc830a83 NC |
9256 | break; |
9257 | } | |
252b5132 | 9258 | |
fc830a83 | 9259 | flags &= ~ EF_ARM_EABIMASK; |
252b5132 | 9260 | |
fc830a83 | 9261 | if (flags & EF_ARM_RELEXEC) |
9b485d32 | 9262 | fprintf (file, _(" [relocatable executable]")); |
252b5132 | 9263 | |
fc830a83 | 9264 | if (flags & EF_ARM_HASENTRY) |
9b485d32 | 9265 | fprintf (file, _(" [has entry point]")); |
252b5132 | 9266 | |
fc830a83 NC |
9267 | flags &= ~ (EF_ARM_RELEXEC | EF_ARM_HASENTRY); |
9268 | ||
9269 | if (flags) | |
9b485d32 | 9270 | fprintf (file, _("<Unrecognised flag bits set>")); |
9a5aca8c | 9271 | |
252b5132 RH |
9272 | fputc ('\n', file); |
9273 | ||
b34976b6 | 9274 | return TRUE; |
252b5132 RH |
9275 | } |
9276 | ||
9277 | static int | |
57e8b36a | 9278 | elf32_arm_get_symbol_type (Elf_Internal_Sym * elf_sym, int type) |
252b5132 | 9279 | { |
2f0ca46a NC |
9280 | switch (ELF_ST_TYPE (elf_sym->st_info)) |
9281 | { | |
9282 | case STT_ARM_TFUNC: | |
9283 | return ELF_ST_TYPE (elf_sym->st_info); | |
ce855c42 | 9284 | |
2f0ca46a NC |
9285 | case STT_ARM_16BIT: |
9286 | /* If the symbol is not an object, return the STT_ARM_16BIT flag. | |
9287 | This allows us to distinguish between data used by Thumb instructions | |
9288 | and non-data (which is probably code) inside Thumb regions of an | |
9289 | executable. */ | |
1a0eb693 | 9290 | if (type != STT_OBJECT && type != STT_TLS) |
2f0ca46a NC |
9291 | return ELF_ST_TYPE (elf_sym->st_info); |
9292 | break; | |
9a5aca8c | 9293 | |
ce855c42 NC |
9294 | default: |
9295 | break; | |
2f0ca46a NC |
9296 | } |
9297 | ||
9298 | return type; | |
252b5132 | 9299 | } |
f21f3fe0 | 9300 | |
252b5132 | 9301 | static asection * |
07adf181 AM |
9302 | elf32_arm_gc_mark_hook (asection *sec, |
9303 | struct bfd_link_info *info, | |
9304 | Elf_Internal_Rela *rel, | |
9305 | struct elf_link_hash_entry *h, | |
9306 | Elf_Internal_Sym *sym) | |
252b5132 RH |
9307 | { |
9308 | if (h != NULL) | |
07adf181 | 9309 | switch (ELF32_R_TYPE (rel->r_info)) |
252b5132 RH |
9310 | { |
9311 | case R_ARM_GNU_VTINHERIT: | |
9312 | case R_ARM_GNU_VTENTRY: | |
07adf181 AM |
9313 | return NULL; |
9314 | } | |
9ad5cbcf | 9315 | |
07adf181 | 9316 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
252b5132 RH |
9317 | } |
9318 | ||
780a67af NC |
9319 | /* Update the got entry reference counts for the section being removed. */ |
9320 | ||
b34976b6 | 9321 | static bfd_boolean |
ba93b8ac DJ |
9322 | elf32_arm_gc_sweep_hook (bfd * abfd, |
9323 | struct bfd_link_info * info, | |
9324 | asection * sec, | |
9325 | const Elf_Internal_Rela * relocs) | |
252b5132 | 9326 | { |
5e681ec4 PB |
9327 | Elf_Internal_Shdr *symtab_hdr; |
9328 | struct elf_link_hash_entry **sym_hashes; | |
9329 | bfd_signed_vma *local_got_refcounts; | |
9330 | const Elf_Internal_Rela *rel, *relend; | |
eb043451 PB |
9331 | struct elf32_arm_link_hash_table * globals; |
9332 | ||
7dda2462 TG |
9333 | if (info->relocatable) |
9334 | return TRUE; | |
9335 | ||
eb043451 | 9336 | globals = elf32_arm_hash_table (info); |
5e681ec4 PB |
9337 | |
9338 | elf_section_data (sec)->local_dynrel = NULL; | |
9339 | ||
0ffa91dd | 9340 | symtab_hdr = & elf_symtab_hdr (abfd); |
5e681ec4 PB |
9341 | sym_hashes = elf_sym_hashes (abfd); |
9342 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
9343 | ||
906e58ca | 9344 | check_use_blx (globals); |
bd97cb95 | 9345 | |
5e681ec4 PB |
9346 | relend = relocs + sec->reloc_count; |
9347 | for (rel = relocs; rel < relend; rel++) | |
eb043451 | 9348 | { |
3eb128b2 AM |
9349 | unsigned long r_symndx; |
9350 | struct elf_link_hash_entry *h = NULL; | |
eb043451 | 9351 | int r_type; |
5e681ec4 | 9352 | |
3eb128b2 AM |
9353 | r_symndx = ELF32_R_SYM (rel->r_info); |
9354 | if (r_symndx >= symtab_hdr->sh_info) | |
9355 | { | |
9356 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
9357 | while (h->root.type == bfd_link_hash_indirect | |
9358 | || h->root.type == bfd_link_hash_warning) | |
9359 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
9360 | } | |
9361 | ||
eb043451 | 9362 | r_type = ELF32_R_TYPE (rel->r_info); |
eb043451 | 9363 | r_type = arm_real_reloc_type (globals, r_type); |
eb043451 PB |
9364 | switch (r_type) |
9365 | { | |
9366 | case R_ARM_GOT32: | |
eb043451 | 9367 | case R_ARM_GOT_PREL: |
ba93b8ac DJ |
9368 | case R_ARM_TLS_GD32: |
9369 | case R_ARM_TLS_IE32: | |
3eb128b2 | 9370 | if (h != NULL) |
eb043451 | 9371 | { |
eb043451 PB |
9372 | if (h->got.refcount > 0) |
9373 | h->got.refcount -= 1; | |
9374 | } | |
9375 | else if (local_got_refcounts != NULL) | |
9376 | { | |
9377 | if (local_got_refcounts[r_symndx] > 0) | |
9378 | local_got_refcounts[r_symndx] -= 1; | |
9379 | } | |
9380 | break; | |
9381 | ||
ba93b8ac DJ |
9382 | case R_ARM_TLS_LDM32: |
9383 | elf32_arm_hash_table (info)->tls_ldm_got.refcount -= 1; | |
9384 | break; | |
9385 | ||
eb043451 | 9386 | case R_ARM_ABS32: |
bb224fc3 | 9387 | case R_ARM_ABS32_NOI: |
eb043451 | 9388 | case R_ARM_REL32: |
bb224fc3 | 9389 | case R_ARM_REL32_NOI: |
eb043451 PB |
9390 | case R_ARM_PC24: |
9391 | case R_ARM_PLT32: | |
5b5bb741 PB |
9392 | case R_ARM_CALL: |
9393 | case R_ARM_JUMP24: | |
eb043451 | 9394 | case R_ARM_PREL31: |
c19d1205 | 9395 | case R_ARM_THM_CALL: |
bd97cb95 DJ |
9396 | case R_ARM_THM_JUMP24: |
9397 | case R_ARM_THM_JUMP19: | |
b6895b4f PB |
9398 | case R_ARM_MOVW_ABS_NC: |
9399 | case R_ARM_MOVT_ABS: | |
9400 | case R_ARM_MOVW_PREL_NC: | |
9401 | case R_ARM_MOVT_PREL: | |
9402 | case R_ARM_THM_MOVW_ABS_NC: | |
9403 | case R_ARM_THM_MOVT_ABS: | |
9404 | case R_ARM_THM_MOVW_PREL_NC: | |
9405 | case R_ARM_THM_MOVT_PREL: | |
b7693d02 DJ |
9406 | /* Should the interworking branches be here also? */ |
9407 | ||
3eb128b2 | 9408 | if (h != NULL) |
eb043451 PB |
9409 | { |
9410 | struct elf32_arm_link_hash_entry *eh; | |
9411 | struct elf32_arm_relocs_copied **pp; | |
9412 | struct elf32_arm_relocs_copied *p; | |
5e681ec4 | 9413 | |
b7693d02 | 9414 | eh = (struct elf32_arm_link_hash_entry *) h; |
5e681ec4 | 9415 | |
eb043451 | 9416 | if (h->plt.refcount > 0) |
b7693d02 DJ |
9417 | { |
9418 | h->plt.refcount -= 1; | |
bd97cb95 DJ |
9419 | if (r_type == R_ARM_THM_CALL) |
9420 | eh->plt_maybe_thumb_refcount--; | |
9421 | ||
9422 | if (r_type == R_ARM_THM_JUMP24 | |
9423 | || r_type == R_ARM_THM_JUMP19) | |
b7693d02 DJ |
9424 | eh->plt_thumb_refcount--; |
9425 | } | |
5e681ec4 | 9426 | |
eb043451 | 9427 | if (r_type == R_ARM_ABS32 |
bb224fc3 MS |
9428 | || r_type == R_ARM_REL32 |
9429 | || r_type == R_ARM_ABS32_NOI | |
9430 | || r_type == R_ARM_REL32_NOI) | |
eb043451 | 9431 | { |
eb043451 PB |
9432 | for (pp = &eh->relocs_copied; (p = *pp) != NULL; |
9433 | pp = &p->next) | |
9434 | if (p->section == sec) | |
9435 | { | |
9436 | p->count -= 1; | |
bb224fc3 MS |
9437 | if (ELF32_R_TYPE (rel->r_info) == R_ARM_REL32 |
9438 | || ELF32_R_TYPE (rel->r_info) == R_ARM_REL32_NOI) | |
ba93b8ac | 9439 | p->pc_count -= 1; |
eb043451 PB |
9440 | if (p->count == 0) |
9441 | *pp = p->next; | |
9442 | break; | |
9443 | } | |
9444 | } | |
9445 | } | |
9446 | break; | |
5e681ec4 | 9447 | |
eb043451 PB |
9448 | default: |
9449 | break; | |
9450 | } | |
9451 | } | |
5e681ec4 | 9452 | |
b34976b6 | 9453 | return TRUE; |
252b5132 RH |
9454 | } |
9455 | ||
780a67af NC |
9456 | /* Look through the relocs for a section during the first phase. */ |
9457 | ||
b34976b6 | 9458 | static bfd_boolean |
57e8b36a NC |
9459 | elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info, |
9460 | asection *sec, const Elf_Internal_Rela *relocs) | |
252b5132 | 9461 | { |
b34976b6 AM |
9462 | Elf_Internal_Shdr *symtab_hdr; |
9463 | struct elf_link_hash_entry **sym_hashes; | |
b34976b6 AM |
9464 | const Elf_Internal_Rela *rel; |
9465 | const Elf_Internal_Rela *rel_end; | |
9466 | bfd *dynobj; | |
5e681ec4 | 9467 | asection *sreloc; |
b34976b6 | 9468 | bfd_vma *local_got_offsets; |
5e681ec4 | 9469 | struct elf32_arm_link_hash_table *htab; |
39623e12 | 9470 | bfd_boolean needs_plt; |
9a5aca8c | 9471 | |
1049f94e | 9472 | if (info->relocatable) |
b34976b6 | 9473 | return TRUE; |
9a5aca8c | 9474 | |
0ffa91dd NC |
9475 | BFD_ASSERT (is_arm_elf (abfd)); |
9476 | ||
5e681ec4 PB |
9477 | htab = elf32_arm_hash_table (info); |
9478 | sreloc = NULL; | |
9a5aca8c | 9479 | |
67687978 PB |
9480 | /* Create dynamic sections for relocatable executables so that we can |
9481 | copy relocations. */ | |
9482 | if (htab->root.is_relocatable_executable | |
9483 | && ! htab->root.dynamic_sections_created) | |
9484 | { | |
9485 | if (! _bfd_elf_link_create_dynamic_sections (abfd, info)) | |
9486 | return FALSE; | |
9487 | } | |
9488 | ||
252b5132 RH |
9489 | dynobj = elf_hash_table (info)->dynobj; |
9490 | local_got_offsets = elf_local_got_offsets (abfd); | |
f21f3fe0 | 9491 | |
0ffa91dd | 9492 | symtab_hdr = & elf_symtab_hdr (abfd); |
252b5132 | 9493 | sym_hashes = elf_sym_hashes (abfd); |
9b485d32 | 9494 | |
252b5132 RH |
9495 | rel_end = relocs + sec->reloc_count; |
9496 | for (rel = relocs; rel < rel_end; rel++) | |
9497 | { | |
9498 | struct elf_link_hash_entry *h; | |
b7693d02 | 9499 | struct elf32_arm_link_hash_entry *eh; |
252b5132 | 9500 | unsigned long r_symndx; |
eb043451 | 9501 | int r_type; |
9a5aca8c | 9502 | |
252b5132 | 9503 | r_symndx = ELF32_R_SYM (rel->r_info); |
eb043451 | 9504 | r_type = ELF32_R_TYPE (rel->r_info); |
eb043451 | 9505 | r_type = arm_real_reloc_type (htab, r_type); |
ba93b8ac DJ |
9506 | |
9507 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
9508 | { | |
9509 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd, | |
9510 | r_symndx); | |
9511 | return FALSE; | |
9512 | } | |
9513 | ||
252b5132 RH |
9514 | if (r_symndx < symtab_hdr->sh_info) |
9515 | h = NULL; | |
9516 | else | |
973a3492 L |
9517 | { |
9518 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
9519 | while (h->root.type == bfd_link_hash_indirect | |
9520 | || h->root.type == bfd_link_hash_warning) | |
9521 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
9522 | } | |
9a5aca8c | 9523 | |
b7693d02 DJ |
9524 | eh = (struct elf32_arm_link_hash_entry *) h; |
9525 | ||
eb043451 | 9526 | switch (r_type) |
252b5132 | 9527 | { |
5e681ec4 | 9528 | case R_ARM_GOT32: |
eb043451 | 9529 | case R_ARM_GOT_PREL: |
ba93b8ac DJ |
9530 | case R_ARM_TLS_GD32: |
9531 | case R_ARM_TLS_IE32: | |
5e681ec4 | 9532 | /* This symbol requires a global offset table entry. */ |
ba93b8ac DJ |
9533 | { |
9534 | int tls_type, old_tls_type; | |
5e681ec4 | 9535 | |
ba93b8ac DJ |
9536 | switch (r_type) |
9537 | { | |
9538 | case R_ARM_TLS_GD32: tls_type = GOT_TLS_GD; break; | |
9539 | case R_ARM_TLS_IE32: tls_type = GOT_TLS_IE; break; | |
9540 | default: tls_type = GOT_NORMAL; break; | |
9541 | } | |
252b5132 | 9542 | |
ba93b8ac DJ |
9543 | if (h != NULL) |
9544 | { | |
9545 | h->got.refcount++; | |
9546 | old_tls_type = elf32_arm_hash_entry (h)->tls_type; | |
9547 | } | |
9548 | else | |
9549 | { | |
9550 | bfd_signed_vma *local_got_refcounts; | |
9551 | ||
9552 | /* This is a global offset table entry for a local symbol. */ | |
9553 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
9554 | if (local_got_refcounts == NULL) | |
9555 | { | |
9556 | bfd_size_type size; | |
906e58ca | 9557 | |
ba93b8ac | 9558 | size = symtab_hdr->sh_info; |
906e58ca | 9559 | size *= (sizeof (bfd_signed_vma) + sizeof (char)); |
ba93b8ac DJ |
9560 | local_got_refcounts = bfd_zalloc (abfd, size); |
9561 | if (local_got_refcounts == NULL) | |
9562 | return FALSE; | |
9563 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
9564 | elf32_arm_local_got_tls_type (abfd) | |
9565 | = (char *) (local_got_refcounts + symtab_hdr->sh_info); | |
9566 | } | |
9567 | local_got_refcounts[r_symndx] += 1; | |
9568 | old_tls_type = elf32_arm_local_got_tls_type (abfd) [r_symndx]; | |
9569 | } | |
9570 | ||
9571 | /* We will already have issued an error message if there is a | |
9572 | TLS / non-TLS mismatch, based on the symbol type. We don't | |
9573 | support any linker relaxations. So just combine any TLS | |
9574 | types needed. */ | |
9575 | if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL | |
9576 | && tls_type != GOT_NORMAL) | |
9577 | tls_type |= old_tls_type; | |
9578 | ||
9579 | if (old_tls_type != tls_type) | |
9580 | { | |
9581 | if (h != NULL) | |
9582 | elf32_arm_hash_entry (h)->tls_type = tls_type; | |
9583 | else | |
9584 | elf32_arm_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
9585 | } | |
9586 | } | |
8029a119 | 9587 | /* Fall through. */ |
ba93b8ac DJ |
9588 | |
9589 | case R_ARM_TLS_LDM32: | |
9590 | if (r_type == R_ARM_TLS_LDM32) | |
9591 | htab->tls_ldm_got.refcount++; | |
8029a119 | 9592 | /* Fall through. */ |
252b5132 | 9593 | |
c19d1205 | 9594 | case R_ARM_GOTOFF32: |
5e681ec4 PB |
9595 | case R_ARM_GOTPC: |
9596 | if (htab->sgot == NULL) | |
9597 | { | |
9598 | if (htab->root.dynobj == NULL) | |
9599 | htab->root.dynobj = abfd; | |
9600 | if (!create_got_section (htab->root.dynobj, info)) | |
9601 | return FALSE; | |
9602 | } | |
252b5132 RH |
9603 | break; |
9604 | ||
00a97672 RS |
9605 | case R_ARM_ABS12: |
9606 | /* VxWorks uses dynamic R_ARM_ABS12 relocations for | |
9607 | ldr __GOTT_INDEX__ offsets. */ | |
9608 | if (!htab->vxworks_p) | |
9609 | break; | |
8029a119 | 9610 | /* Fall through. */ |
00a97672 | 9611 | |
252b5132 | 9612 | case R_ARM_PC24: |
7359ea65 | 9613 | case R_ARM_PLT32: |
5b5bb741 PB |
9614 | case R_ARM_CALL: |
9615 | case R_ARM_JUMP24: | |
eb043451 | 9616 | case R_ARM_PREL31: |
c19d1205 | 9617 | case R_ARM_THM_CALL: |
bd97cb95 DJ |
9618 | case R_ARM_THM_JUMP24: |
9619 | case R_ARM_THM_JUMP19: | |
39623e12 PB |
9620 | needs_plt = 1; |
9621 | goto normal_reloc; | |
9622 | ||
9623 | case R_ARM_ABS32: | |
9624 | case R_ARM_ABS32_NOI: | |
9625 | case R_ARM_REL32: | |
9626 | case R_ARM_REL32_NOI: | |
b6895b4f PB |
9627 | case R_ARM_MOVW_ABS_NC: |
9628 | case R_ARM_MOVT_ABS: | |
9629 | case R_ARM_MOVW_PREL_NC: | |
9630 | case R_ARM_MOVT_PREL: | |
9631 | case R_ARM_THM_MOVW_ABS_NC: | |
9632 | case R_ARM_THM_MOVT_ABS: | |
9633 | case R_ARM_THM_MOVW_PREL_NC: | |
9634 | case R_ARM_THM_MOVT_PREL: | |
39623e12 PB |
9635 | needs_plt = 0; |
9636 | normal_reloc: | |
9637 | ||
b7693d02 | 9638 | /* Should the interworking branches be listed here? */ |
7359ea65 | 9639 | if (h != NULL) |
5e681ec4 PB |
9640 | { |
9641 | /* If this reloc is in a read-only section, we might | |
9642 | need a copy reloc. We can't check reliably at this | |
9643 | stage whether the section is read-only, as input | |
9644 | sections have not yet been mapped to output sections. | |
9645 | Tentatively set the flag for now, and correct in | |
9646 | adjust_dynamic_symbol. */ | |
7359ea65 | 9647 | if (!info->shared) |
f5385ebf | 9648 | h->non_got_ref = 1; |
7359ea65 | 9649 | |
5e681ec4 | 9650 | /* We may need a .plt entry if the function this reloc |
c84cd8ee DJ |
9651 | refers to is in a different object. We can't tell for |
9652 | sure yet, because something later might force the | |
9653 | symbol local. */ | |
39623e12 | 9654 | if (needs_plt) |
f5385ebf | 9655 | h->needs_plt = 1; |
4f199be3 DJ |
9656 | |
9657 | /* If we create a PLT entry, this relocation will reference | |
9658 | it, even if it's an ABS32 relocation. */ | |
9659 | h->plt.refcount += 1; | |
b7693d02 | 9660 | |
bd97cb95 DJ |
9661 | /* It's too early to use htab->use_blx here, so we have to |
9662 | record possible blx references separately from | |
9663 | relocs that definitely need a thumb stub. */ | |
9664 | ||
c19d1205 | 9665 | if (r_type == R_ARM_THM_CALL) |
bd97cb95 DJ |
9666 | eh->plt_maybe_thumb_refcount += 1; |
9667 | ||
9668 | if (r_type == R_ARM_THM_JUMP24 | |
9669 | || r_type == R_ARM_THM_JUMP19) | |
b7693d02 | 9670 | eh->plt_thumb_refcount += 1; |
5e681ec4 PB |
9671 | } |
9672 | ||
67687978 PB |
9673 | /* If we are creating a shared library or relocatable executable, |
9674 | and this is a reloc against a global symbol, or a non PC | |
9675 | relative reloc against a local symbol, then we need to copy | |
9676 | the reloc into the shared library. However, if we are linking | |
9677 | with -Bsymbolic, we do not need to copy a reloc against a | |
252b5132 RH |
9678 | global symbol which is defined in an object we are |
9679 | including in the link (i.e., DEF_REGULAR is set). At | |
9680 | this point we have not seen all the input files, so it is | |
9681 | possible that DEF_REGULAR is not set now but will be set | |
9682 | later (it is never cleared). We account for that | |
9683 | possibility below by storing information in the | |
5e681ec4 | 9684 | relocs_copied field of the hash table entry. */ |
67687978 | 9685 | if ((info->shared || htab->root.is_relocatable_executable) |
5e681ec4 | 9686 | && (sec->flags & SEC_ALLOC) != 0 |
bb224fc3 | 9687 | && ((r_type == R_ARM_ABS32 || r_type == R_ARM_ABS32_NOI) |
71a976dd DJ |
9688 | || (h != NULL && ! h->needs_plt |
9689 | && (! info->symbolic || ! h->def_regular)))) | |
252b5132 | 9690 | { |
5e681ec4 PB |
9691 | struct elf32_arm_relocs_copied *p, **head; |
9692 | ||
252b5132 RH |
9693 | /* When creating a shared object, we must copy these |
9694 | reloc types into the output file. We create a reloc | |
9695 | section in dynobj and make room for this reloc. */ | |
83bac4b0 | 9696 | if (sreloc == NULL) |
252b5132 | 9697 | { |
83bac4b0 NC |
9698 | sreloc = _bfd_elf_make_dynamic_reloc_section |
9699 | (sec, dynobj, 2, abfd, ! htab->use_rel); | |
252b5132 | 9700 | |
83bac4b0 | 9701 | if (sreloc == NULL) |
b34976b6 | 9702 | return FALSE; |
252b5132 | 9703 | |
83bac4b0 NC |
9704 | /* BPABI objects never have dynamic relocations mapped. */ |
9705 | if (! htab->symbian_p) | |
252b5132 | 9706 | { |
83bac4b0 | 9707 | flagword flags; |
5e681ec4 | 9708 | |
83bac4b0 | 9709 | flags = bfd_get_section_flags (dynobj, sreloc); |
528aeb62 | 9710 | flags |= (SEC_LOAD | SEC_ALLOC); |
83bac4b0 NC |
9711 | bfd_set_section_flags (dynobj, sreloc, flags); |
9712 | } | |
252b5132 RH |
9713 | } |
9714 | ||
5e681ec4 PB |
9715 | /* If this is a global symbol, we count the number of |
9716 | relocations we need for this symbol. */ | |
9717 | if (h != NULL) | |
252b5132 | 9718 | { |
5e681ec4 PB |
9719 | head = &((struct elf32_arm_link_hash_entry *) h)->relocs_copied; |
9720 | } | |
9721 | else | |
9722 | { | |
9723 | /* Track dynamic relocs needed for local syms too. | |
9724 | We really need local syms available to do this | |
9725 | easily. Oh well. */ | |
57e8b36a | 9726 | |
5e681ec4 | 9727 | asection *s; |
6edfbbad DJ |
9728 | void *vpp; |
9729 | ||
5e681ec4 PB |
9730 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, |
9731 | sec, r_symndx); | |
9732 | if (s == NULL) | |
9733 | return FALSE; | |
57e8b36a | 9734 | |
6edfbbad DJ |
9735 | vpp = &elf_section_data (s)->local_dynrel; |
9736 | head = (struct elf32_arm_relocs_copied **) vpp; | |
5e681ec4 | 9737 | } |
57e8b36a | 9738 | |
5e681ec4 PB |
9739 | p = *head; |
9740 | if (p == NULL || p->section != sec) | |
9741 | { | |
9742 | bfd_size_type amt = sizeof *p; | |
57e8b36a | 9743 | |
5e681ec4 | 9744 | p = bfd_alloc (htab->root.dynobj, amt); |
252b5132 | 9745 | if (p == NULL) |
5e681ec4 PB |
9746 | return FALSE; |
9747 | p->next = *head; | |
9748 | *head = p; | |
9749 | p->section = sec; | |
9750 | p->count = 0; | |
ba93b8ac | 9751 | p->pc_count = 0; |
252b5132 | 9752 | } |
57e8b36a | 9753 | |
bb224fc3 | 9754 | if (r_type == R_ARM_REL32 || r_type == R_ARM_REL32_NOI) |
ba93b8ac | 9755 | p->pc_count += 1; |
71a976dd | 9756 | p->count += 1; |
252b5132 RH |
9757 | } |
9758 | break; | |
9759 | ||
9760 | /* This relocation describes the C++ object vtable hierarchy. | |
9761 | Reconstruct it for later use during GC. */ | |
9762 | case R_ARM_GNU_VTINHERIT: | |
c152c796 | 9763 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 9764 | return FALSE; |
252b5132 | 9765 | break; |
9a5aca8c | 9766 | |
252b5132 RH |
9767 | /* This relocation describes which C++ vtable entries are actually |
9768 | used. Record for later use during GC. */ | |
9769 | case R_ARM_GNU_VTENTRY: | |
d17e0c6e JB |
9770 | BFD_ASSERT (h != NULL); |
9771 | if (h != NULL | |
9772 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 9773 | return FALSE; |
252b5132 RH |
9774 | break; |
9775 | } | |
9776 | } | |
f21f3fe0 | 9777 | |
b34976b6 | 9778 | return TRUE; |
252b5132 RH |
9779 | } |
9780 | ||
6a5bb875 PB |
9781 | /* Unwinding tables are not referenced directly. This pass marks them as |
9782 | required if the corresponding code section is marked. */ | |
9783 | ||
9784 | static bfd_boolean | |
906e58ca NC |
9785 | elf32_arm_gc_mark_extra_sections (struct bfd_link_info *info, |
9786 | elf_gc_mark_hook_fn gc_mark_hook) | |
6a5bb875 PB |
9787 | { |
9788 | bfd *sub; | |
9789 | Elf_Internal_Shdr **elf_shdrp; | |
9790 | bfd_boolean again; | |
9791 | ||
9792 | /* Marking EH data may cause additional code sections to be marked, | |
9793 | requiring multiple passes. */ | |
9794 | again = TRUE; | |
9795 | while (again) | |
9796 | { | |
9797 | again = FALSE; | |
9798 | for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) | |
9799 | { | |
9800 | asection *o; | |
9801 | ||
0ffa91dd | 9802 | if (! is_arm_elf (sub)) |
6a5bb875 PB |
9803 | continue; |
9804 | ||
9805 | elf_shdrp = elf_elfsections (sub); | |
9806 | for (o = sub->sections; o != NULL; o = o->next) | |
9807 | { | |
9808 | Elf_Internal_Shdr *hdr; | |
0ffa91dd | 9809 | |
6a5bb875 | 9810 | hdr = &elf_section_data (o)->this_hdr; |
4fbb74a6 AM |
9811 | if (hdr->sh_type == SHT_ARM_EXIDX |
9812 | && hdr->sh_link | |
9813 | && hdr->sh_link < elf_numsections (sub) | |
6a5bb875 PB |
9814 | && !o->gc_mark |
9815 | && elf_shdrp[hdr->sh_link]->bfd_section->gc_mark) | |
9816 | { | |
9817 | again = TRUE; | |
9818 | if (!_bfd_elf_gc_mark (info, o, gc_mark_hook)) | |
9819 | return FALSE; | |
9820 | } | |
9821 | } | |
9822 | } | |
9823 | } | |
9824 | ||
9825 | return TRUE; | |
9826 | } | |
9827 | ||
3c9458e9 NC |
9828 | /* Treat mapping symbols as special target symbols. */ |
9829 | ||
9830 | static bfd_boolean | |
9831 | elf32_arm_is_target_special_symbol (bfd * abfd ATTRIBUTE_UNUSED, asymbol * sym) | |
9832 | { | |
b0796911 PB |
9833 | return bfd_is_arm_special_symbol_name (sym->name, |
9834 | BFD_ARM_SPECIAL_SYM_TYPE_ANY); | |
3c9458e9 NC |
9835 | } |
9836 | ||
0367ecfb NC |
9837 | /* This is a copy of elf_find_function() from elf.c except that |
9838 | ARM mapping symbols are ignored when looking for function names | |
9839 | and STT_ARM_TFUNC is considered to a function type. */ | |
252b5132 | 9840 | |
0367ecfb NC |
9841 | static bfd_boolean |
9842 | arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED, | |
9843 | asection * section, | |
9844 | asymbol ** symbols, | |
9845 | bfd_vma offset, | |
9846 | const char ** filename_ptr, | |
9847 | const char ** functionname_ptr) | |
9848 | { | |
9849 | const char * filename = NULL; | |
9850 | asymbol * func = NULL; | |
9851 | bfd_vma low_func = 0; | |
9852 | asymbol ** p; | |
252b5132 RH |
9853 | |
9854 | for (p = symbols; *p != NULL; p++) | |
9855 | { | |
9856 | elf_symbol_type *q; | |
9857 | ||
9858 | q = (elf_symbol_type *) *p; | |
9859 | ||
252b5132 RH |
9860 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) |
9861 | { | |
9862 | default: | |
9863 | break; | |
9864 | case STT_FILE: | |
9865 | filename = bfd_asymbol_name (&q->symbol); | |
9866 | break; | |
252b5132 RH |
9867 | case STT_FUNC: |
9868 | case STT_ARM_TFUNC: | |
9d2da7ca | 9869 | case STT_NOTYPE: |
b0796911 | 9870 | /* Skip mapping symbols. */ |
0367ecfb | 9871 | if ((q->symbol.flags & BSF_LOCAL) |
b0796911 PB |
9872 | && bfd_is_arm_special_symbol_name (q->symbol.name, |
9873 | BFD_ARM_SPECIAL_SYM_TYPE_ANY)) | |
0367ecfb NC |
9874 | continue; |
9875 | /* Fall through. */ | |
6b40fcba | 9876 | if (bfd_get_section (&q->symbol) == section |
252b5132 RH |
9877 | && q->symbol.value >= low_func |
9878 | && q->symbol.value <= offset) | |
9879 | { | |
9880 | func = (asymbol *) q; | |
9881 | low_func = q->symbol.value; | |
9882 | } | |
9883 | break; | |
9884 | } | |
9885 | } | |
9886 | ||
9887 | if (func == NULL) | |
b34976b6 | 9888 | return FALSE; |
252b5132 | 9889 | |
0367ecfb NC |
9890 | if (filename_ptr) |
9891 | *filename_ptr = filename; | |
9892 | if (functionname_ptr) | |
9893 | *functionname_ptr = bfd_asymbol_name (func); | |
9894 | ||
9895 | return TRUE; | |
906e58ca | 9896 | } |
0367ecfb NC |
9897 | |
9898 | ||
9899 | /* Find the nearest line to a particular section and offset, for error | |
9900 | reporting. This code is a duplicate of the code in elf.c, except | |
9901 | that it uses arm_elf_find_function. */ | |
9902 | ||
9903 | static bfd_boolean | |
9904 | elf32_arm_find_nearest_line (bfd * abfd, | |
9905 | asection * section, | |
9906 | asymbol ** symbols, | |
9907 | bfd_vma offset, | |
9908 | const char ** filename_ptr, | |
9909 | const char ** functionname_ptr, | |
9910 | unsigned int * line_ptr) | |
9911 | { | |
9912 | bfd_boolean found = FALSE; | |
9913 | ||
9914 | /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */ | |
9915 | ||
9916 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
9917 | filename_ptr, functionname_ptr, | |
9918 | line_ptr, 0, | |
9919 | & elf_tdata (abfd)->dwarf2_find_line_info)) | |
9920 | { | |
9921 | if (!*functionname_ptr) | |
9922 | arm_elf_find_function (abfd, section, symbols, offset, | |
9923 | *filename_ptr ? NULL : filename_ptr, | |
9924 | functionname_ptr); | |
f21f3fe0 | 9925 | |
0367ecfb NC |
9926 | return TRUE; |
9927 | } | |
9928 | ||
9929 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
9930 | & found, filename_ptr, | |
9931 | functionname_ptr, line_ptr, | |
9932 | & elf_tdata (abfd)->line_info)) | |
9933 | return FALSE; | |
9934 | ||
9935 | if (found && (*functionname_ptr || *line_ptr)) | |
9936 | return TRUE; | |
9937 | ||
9938 | if (symbols == NULL) | |
9939 | return FALSE; | |
9940 | ||
9941 | if (! arm_elf_find_function (abfd, section, symbols, offset, | |
9942 | filename_ptr, functionname_ptr)) | |
9943 | return FALSE; | |
9944 | ||
9945 | *line_ptr = 0; | |
b34976b6 | 9946 | return TRUE; |
252b5132 RH |
9947 | } |
9948 | ||
4ab527b0 FF |
9949 | static bfd_boolean |
9950 | elf32_arm_find_inliner_info (bfd * abfd, | |
9951 | const char ** filename_ptr, | |
9952 | const char ** functionname_ptr, | |
9953 | unsigned int * line_ptr) | |
9954 | { | |
9955 | bfd_boolean found; | |
9956 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
9957 | functionname_ptr, line_ptr, | |
9958 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
9959 | return found; | |
9960 | } | |
9961 | ||
252b5132 RH |
9962 | /* Adjust a symbol defined by a dynamic object and referenced by a |
9963 | regular object. The current definition is in some section of the | |
9964 | dynamic object, but we're not including those sections. We have to | |
9965 | change the definition to something the rest of the link can | |
9966 | understand. */ | |
9967 | ||
b34976b6 | 9968 | static bfd_boolean |
57e8b36a NC |
9969 | elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info, |
9970 | struct elf_link_hash_entry * h) | |
252b5132 RH |
9971 | { |
9972 | bfd * dynobj; | |
9973 | asection * s; | |
b7693d02 | 9974 | struct elf32_arm_link_hash_entry * eh; |
67687978 | 9975 | struct elf32_arm_link_hash_table *globals; |
252b5132 | 9976 | |
67687978 | 9977 | globals = elf32_arm_hash_table (info); |
252b5132 RH |
9978 | dynobj = elf_hash_table (info)->dynobj; |
9979 | ||
9980 | /* Make sure we know what is going on here. */ | |
9981 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 9982 | && (h->needs_plt |
f6e332e6 | 9983 | || h->u.weakdef != NULL |
f5385ebf AM |
9984 | || (h->def_dynamic |
9985 | && h->ref_regular | |
9986 | && !h->def_regular))); | |
252b5132 | 9987 | |
b7693d02 DJ |
9988 | eh = (struct elf32_arm_link_hash_entry *) h; |
9989 | ||
252b5132 RH |
9990 | /* If this is a function, put it in the procedure linkage table. We |
9991 | will fill in the contents of the procedure linkage table later, | |
9992 | when we know the address of the .got section. */ | |
0f88be7a | 9993 | if (h->type == STT_FUNC || h->type == STT_ARM_TFUNC |
f5385ebf | 9994 | || h->needs_plt) |
252b5132 | 9995 | { |
5e681ec4 PB |
9996 | if (h->plt.refcount <= 0 |
9997 | || SYMBOL_CALLS_LOCAL (info, h) | |
9998 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
9999 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
10000 | { |
10001 | /* This case can occur if we saw a PLT32 reloc in an input | |
5e681ec4 PB |
10002 | file, but the symbol was never referred to by a dynamic |
10003 | object, or if all references were garbage collected. In | |
10004 | such a case, we don't actually need to build a procedure | |
10005 | linkage table, and we can just do a PC24 reloc instead. */ | |
10006 | h->plt.offset = (bfd_vma) -1; | |
b7693d02 | 10007 | eh->plt_thumb_refcount = 0; |
bd97cb95 | 10008 | eh->plt_maybe_thumb_refcount = 0; |
f5385ebf | 10009 | h->needs_plt = 0; |
252b5132 RH |
10010 | } |
10011 | ||
b34976b6 | 10012 | return TRUE; |
252b5132 | 10013 | } |
5e681ec4 | 10014 | else |
b7693d02 DJ |
10015 | { |
10016 | /* It's possible that we incorrectly decided a .plt reloc was | |
10017 | needed for an R_ARM_PC24 or similar reloc to a non-function sym | |
10018 | in check_relocs. We can't decide accurately between function | |
10019 | and non-function syms in check-relocs; Objects loaded later in | |
10020 | the link may change h->type. So fix it now. */ | |
10021 | h->plt.offset = (bfd_vma) -1; | |
10022 | eh->plt_thumb_refcount = 0; | |
bd97cb95 | 10023 | eh->plt_maybe_thumb_refcount = 0; |
b7693d02 | 10024 | } |
252b5132 RH |
10025 | |
10026 | /* If this is a weak symbol, and there is a real definition, the | |
10027 | processor independent code will have arranged for us to see the | |
10028 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 10029 | if (h->u.weakdef != NULL) |
252b5132 | 10030 | { |
f6e332e6 AM |
10031 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
10032 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
10033 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
10034 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 10035 | return TRUE; |
252b5132 RH |
10036 | } |
10037 | ||
ba93b8ac DJ |
10038 | /* If there are no non-GOT references, we do not need a copy |
10039 | relocation. */ | |
10040 | if (!h->non_got_ref) | |
10041 | return TRUE; | |
10042 | ||
252b5132 RH |
10043 | /* This is a reference to a symbol defined by a dynamic object which |
10044 | is not a function. */ | |
10045 | ||
10046 | /* If we are creating a shared library, we must presume that the | |
10047 | only references to the symbol are via the global offset table. | |
10048 | For such cases we need not do anything here; the relocations will | |
67687978 PB |
10049 | be handled correctly by relocate_section. Relocatable executables |
10050 | can reference data in shared objects directly, so we don't need to | |
10051 | do anything here. */ | |
10052 | if (info->shared || globals->root.is_relocatable_executable) | |
b34976b6 | 10053 | return TRUE; |
252b5132 | 10054 | |
909272ee AM |
10055 | if (h->size == 0) |
10056 | { | |
10057 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
10058 | h->root.root.string); | |
10059 | return TRUE; | |
10060 | } | |
10061 | ||
252b5132 RH |
10062 | /* We must allocate the symbol in our .dynbss section, which will |
10063 | become part of the .bss section of the executable. There will be | |
10064 | an entry for this symbol in the .dynsym section. The dynamic | |
10065 | object will contain position independent code, so all references | |
10066 | from the dynamic object to this symbol will go through the global | |
10067 | offset table. The dynamic linker will use the .dynsym entry to | |
10068 | determine the address it must put in the global offset table, so | |
10069 | both the dynamic object and the regular object will refer to the | |
10070 | same memory location for the variable. */ | |
252b5132 RH |
10071 | s = bfd_get_section_by_name (dynobj, ".dynbss"); |
10072 | BFD_ASSERT (s != NULL); | |
10073 | ||
10074 | /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to | |
10075 | copy the initial value out of the dynamic object and into the | |
10076 | runtime process image. We need to remember the offset into the | |
00a97672 | 10077 | .rel(a).bss section we are going to use. */ |
252b5132 RH |
10078 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
10079 | { | |
10080 | asection *srel; | |
10081 | ||
00a97672 | 10082 | srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (globals, ".bss")); |
252b5132 | 10083 | BFD_ASSERT (srel != NULL); |
00a97672 | 10084 | srel->size += RELOC_SIZE (globals); |
f5385ebf | 10085 | h->needs_copy = 1; |
252b5132 RH |
10086 | } |
10087 | ||
027297b7 | 10088 | return _bfd_elf_adjust_dynamic_copy (h, s); |
252b5132 RH |
10089 | } |
10090 | ||
5e681ec4 PB |
10091 | /* Allocate space in .plt, .got and associated reloc sections for |
10092 | dynamic relocs. */ | |
10093 | ||
10094 | static bfd_boolean | |
57e8b36a | 10095 | allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
5e681ec4 PB |
10096 | { |
10097 | struct bfd_link_info *info; | |
10098 | struct elf32_arm_link_hash_table *htab; | |
10099 | struct elf32_arm_link_hash_entry *eh; | |
10100 | struct elf32_arm_relocs_copied *p; | |
bd97cb95 | 10101 | bfd_signed_vma thumb_refs; |
5e681ec4 | 10102 | |
b7693d02 DJ |
10103 | eh = (struct elf32_arm_link_hash_entry *) h; |
10104 | ||
5e681ec4 PB |
10105 | if (h->root.type == bfd_link_hash_indirect) |
10106 | return TRUE; | |
10107 | ||
10108 | if (h->root.type == bfd_link_hash_warning) | |
10109 | /* When warning symbols are created, they **replace** the "real" | |
10110 | entry in the hash table, thus we never get to see the real | |
10111 | symbol in a hash traversal. So look at it now. */ | |
10112 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
10113 | ||
10114 | info = (struct bfd_link_info *) inf; | |
10115 | htab = elf32_arm_hash_table (info); | |
10116 | ||
10117 | if (htab->root.dynamic_sections_created | |
10118 | && h->plt.refcount > 0) | |
10119 | { | |
10120 | /* Make sure this symbol is output as a dynamic symbol. | |
10121 | Undefined weak syms won't yet be marked as dynamic. */ | |
10122 | if (h->dynindx == -1 | |
f5385ebf | 10123 | && !h->forced_local) |
5e681ec4 | 10124 | { |
c152c796 | 10125 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
10126 | return FALSE; |
10127 | } | |
10128 | ||
10129 | if (info->shared | |
7359ea65 | 10130 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
5e681ec4 PB |
10131 | { |
10132 | asection *s = htab->splt; | |
10133 | ||
10134 | /* If this is the first .plt entry, make room for the special | |
10135 | first entry. */ | |
eea6121a | 10136 | if (s->size == 0) |
e5a52504 | 10137 | s->size += htab->plt_header_size; |
5e681ec4 | 10138 | |
eea6121a | 10139 | h->plt.offset = s->size; |
5e681ec4 | 10140 | |
b7693d02 DJ |
10141 | /* If we will insert a Thumb trampoline before this PLT, leave room |
10142 | for it. */ | |
bd97cb95 DJ |
10143 | thumb_refs = eh->plt_thumb_refcount; |
10144 | if (!htab->use_blx) | |
10145 | thumb_refs += eh->plt_maybe_thumb_refcount; | |
10146 | ||
10147 | if (thumb_refs > 0) | |
b7693d02 DJ |
10148 | { |
10149 | h->plt.offset += PLT_THUMB_STUB_SIZE; | |
10150 | s->size += PLT_THUMB_STUB_SIZE; | |
10151 | } | |
10152 | ||
5e681ec4 PB |
10153 | /* If this symbol is not defined in a regular file, and we are |
10154 | not generating a shared library, then set the symbol to this | |
10155 | location in the .plt. This is required to make function | |
10156 | pointers compare as equal between the normal executable and | |
10157 | the shared library. */ | |
10158 | if (! info->shared | |
f5385ebf | 10159 | && !h->def_regular) |
5e681ec4 PB |
10160 | { |
10161 | h->root.u.def.section = s; | |
10162 | h->root.u.def.value = h->plt.offset; | |
b7693d02 DJ |
10163 | |
10164 | /* Make sure the function is not marked as Thumb, in case | |
10165 | it is the target of an ABS32 relocation, which will | |
10166 | point to the PLT entry. */ | |
10167 | if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC) | |
10168 | h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC); | |
5e681ec4 PB |
10169 | } |
10170 | ||
10171 | /* Make room for this entry. */ | |
e5a52504 | 10172 | s->size += htab->plt_entry_size; |
5e681ec4 | 10173 | |
e5a52504 | 10174 | if (!htab->symbian_p) |
b7693d02 DJ |
10175 | { |
10176 | /* We also need to make an entry in the .got.plt section, which | |
10177 | will be placed in the .got section by the linker script. */ | |
10178 | eh->plt_got_offset = htab->sgotplt->size; | |
10179 | htab->sgotplt->size += 4; | |
10180 | } | |
5e681ec4 | 10181 | |
00a97672 RS |
10182 | /* We also need to make an entry in the .rel(a).plt section. */ |
10183 | htab->srelplt->size += RELOC_SIZE (htab); | |
10184 | ||
10185 | /* VxWorks executables have a second set of relocations for | |
10186 | each PLT entry. They go in a separate relocation section, | |
10187 | which is processed by the kernel loader. */ | |
10188 | if (htab->vxworks_p && !info->shared) | |
10189 | { | |
10190 | /* There is a relocation for the initial PLT entry: | |
10191 | an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */ | |
10192 | if (h->plt.offset == htab->plt_header_size) | |
10193 | htab->srelplt2->size += RELOC_SIZE (htab); | |
10194 | ||
10195 | /* There are two extra relocations for each subsequent | |
10196 | PLT entry: an R_ARM_32 relocation for the GOT entry, | |
10197 | and an R_ARM_32 relocation for the PLT entry. */ | |
10198 | htab->srelplt2->size += RELOC_SIZE (htab) * 2; | |
10199 | } | |
5e681ec4 PB |
10200 | } |
10201 | else | |
10202 | { | |
10203 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 10204 | h->needs_plt = 0; |
5e681ec4 PB |
10205 | } |
10206 | } | |
10207 | else | |
10208 | { | |
10209 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 10210 | h->needs_plt = 0; |
5e681ec4 PB |
10211 | } |
10212 | ||
10213 | if (h->got.refcount > 0) | |
10214 | { | |
10215 | asection *s; | |
10216 | bfd_boolean dyn; | |
ba93b8ac DJ |
10217 | int tls_type = elf32_arm_hash_entry (h)->tls_type; |
10218 | int indx; | |
5e681ec4 PB |
10219 | |
10220 | /* Make sure this symbol is output as a dynamic symbol. | |
10221 | Undefined weak syms won't yet be marked as dynamic. */ | |
10222 | if (h->dynindx == -1 | |
f5385ebf | 10223 | && !h->forced_local) |
5e681ec4 | 10224 | { |
c152c796 | 10225 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
10226 | return FALSE; |
10227 | } | |
10228 | ||
e5a52504 MM |
10229 | if (!htab->symbian_p) |
10230 | { | |
10231 | s = htab->sgot; | |
10232 | h->got.offset = s->size; | |
ba93b8ac DJ |
10233 | |
10234 | if (tls_type == GOT_UNKNOWN) | |
10235 | abort (); | |
10236 | ||
10237 | if (tls_type == GOT_NORMAL) | |
10238 | /* Non-TLS symbols need one GOT slot. */ | |
10239 | s->size += 4; | |
10240 | else | |
10241 | { | |
10242 | if (tls_type & GOT_TLS_GD) | |
10243 | /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */ | |
10244 | s->size += 8; | |
10245 | if (tls_type & GOT_TLS_IE) | |
10246 | /* R_ARM_TLS_IE32 needs one GOT slot. */ | |
10247 | s->size += 4; | |
10248 | } | |
10249 | ||
e5a52504 | 10250 | dyn = htab->root.dynamic_sections_created; |
ba93b8ac DJ |
10251 | |
10252 | indx = 0; | |
10253 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
10254 | && (!info->shared | |
10255 | || !SYMBOL_REFERENCES_LOCAL (info, h))) | |
10256 | indx = h->dynindx; | |
10257 | ||
10258 | if (tls_type != GOT_NORMAL | |
10259 | && (info->shared || indx != 0) | |
10260 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
10261 | || h->root.type != bfd_link_hash_undefweak)) | |
10262 | { | |
10263 | if (tls_type & GOT_TLS_IE) | |
00a97672 | 10264 | htab->srelgot->size += RELOC_SIZE (htab); |
ba93b8ac DJ |
10265 | |
10266 | if (tls_type & GOT_TLS_GD) | |
00a97672 | 10267 | htab->srelgot->size += RELOC_SIZE (htab); |
ba93b8ac DJ |
10268 | |
10269 | if ((tls_type & GOT_TLS_GD) && indx != 0) | |
00a97672 | 10270 | htab->srelgot->size += RELOC_SIZE (htab); |
ba93b8ac DJ |
10271 | } |
10272 | else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
10273 | || h->root.type != bfd_link_hash_undefweak) | |
10274 | && (info->shared | |
10275 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
00a97672 | 10276 | htab->srelgot->size += RELOC_SIZE (htab); |
e5a52504 | 10277 | } |
5e681ec4 PB |
10278 | } |
10279 | else | |
10280 | h->got.offset = (bfd_vma) -1; | |
10281 | ||
a4fd1a8e PB |
10282 | /* Allocate stubs for exported Thumb functions on v4t. */ |
10283 | if (!htab->use_blx && h->dynindx != -1 | |
0eaedd0e | 10284 | && h->def_regular |
a4fd1a8e PB |
10285 | && ELF_ST_TYPE (h->type) == STT_ARM_TFUNC |
10286 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
10287 | { | |
10288 | struct elf_link_hash_entry * th; | |
10289 | struct bfd_link_hash_entry * bh; | |
10290 | struct elf_link_hash_entry * myh; | |
10291 | char name[1024]; | |
10292 | asection *s; | |
10293 | bh = NULL; | |
10294 | /* Create a new symbol to regist the real location of the function. */ | |
10295 | s = h->root.u.def.section; | |
906e58ca | 10296 | sprintf (name, "__real_%s", h->root.root.string); |
a4fd1a8e PB |
10297 | _bfd_generic_link_add_one_symbol (info, s->owner, |
10298 | name, BSF_GLOBAL, s, | |
10299 | h->root.u.def.value, | |
10300 | NULL, TRUE, FALSE, &bh); | |
10301 | ||
10302 | myh = (struct elf_link_hash_entry *) bh; | |
10303 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC); | |
10304 | myh->forced_local = 1; | |
10305 | eh->export_glue = myh; | |
10306 | th = record_arm_to_thumb_glue (info, h); | |
10307 | /* Point the symbol at the stub. */ | |
10308 | h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC); | |
10309 | h->root.u.def.section = th->root.u.def.section; | |
10310 | h->root.u.def.value = th->root.u.def.value & ~1; | |
10311 | } | |
10312 | ||
5e681ec4 PB |
10313 | if (eh->relocs_copied == NULL) |
10314 | return TRUE; | |
10315 | ||
10316 | /* In the shared -Bsymbolic case, discard space allocated for | |
10317 | dynamic pc-relative relocs against symbols which turn out to be | |
10318 | defined in regular objects. For the normal shared case, discard | |
10319 | space for pc-relative relocs that have become local due to symbol | |
10320 | visibility changes. */ | |
10321 | ||
67687978 | 10322 | if (info->shared || htab->root.is_relocatable_executable) |
5e681ec4 | 10323 | { |
7bdca076 | 10324 | /* The only relocs that use pc_count are R_ARM_REL32 and |
bb224fc3 MS |
10325 | R_ARM_REL32_NOI, which will appear on something like |
10326 | ".long foo - .". We want calls to protected symbols to resolve | |
10327 | directly to the function rather than going via the plt. If people | |
10328 | want function pointer comparisons to work as expected then they | |
10329 | should avoid writing assembly like ".long foo - .". */ | |
ba93b8ac DJ |
10330 | if (SYMBOL_CALLS_LOCAL (info, h)) |
10331 | { | |
10332 | struct elf32_arm_relocs_copied **pp; | |
10333 | ||
10334 | for (pp = &eh->relocs_copied; (p = *pp) != NULL; ) | |
10335 | { | |
10336 | p->count -= p->pc_count; | |
10337 | p->pc_count = 0; | |
10338 | if (p->count == 0) | |
10339 | *pp = p->next; | |
10340 | else | |
10341 | pp = &p->next; | |
10342 | } | |
10343 | } | |
10344 | ||
3348747a NS |
10345 | if (elf32_arm_hash_table (info)->vxworks_p) |
10346 | { | |
10347 | struct elf32_arm_relocs_copied **pp; | |
10348 | ||
10349 | for (pp = &eh->relocs_copied; (p = *pp) != NULL; ) | |
10350 | { | |
10351 | if (strcmp (p->section->output_section->name, ".tls_vars") == 0) | |
10352 | *pp = p->next; | |
10353 | else | |
10354 | pp = &p->next; | |
10355 | } | |
10356 | } | |
10357 | ||
ba93b8ac | 10358 | /* Also discard relocs on undefined weak syms with non-default |
7359ea65 | 10359 | visibility. */ |
22d606e9 | 10360 | if (eh->relocs_copied != NULL |
5e681ec4 | 10361 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 AM |
10362 | { |
10363 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
10364 | eh->relocs_copied = NULL; | |
10365 | ||
10366 | /* Make sure undefined weak symbols are output as a dynamic | |
10367 | symbol in PIEs. */ | |
10368 | else if (h->dynindx == -1 | |
10369 | && !h->forced_local) | |
10370 | { | |
10371 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
10372 | return FALSE; | |
10373 | } | |
10374 | } | |
10375 | ||
67687978 PB |
10376 | else if (htab->root.is_relocatable_executable && h->dynindx == -1 |
10377 | && h->root.type == bfd_link_hash_new) | |
10378 | { | |
10379 | /* Output absolute symbols so that we can create relocations | |
10380 | against them. For normal symbols we output a relocation | |
10381 | against the section that contains them. */ | |
10382 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
10383 | return FALSE; | |
10384 | } | |
10385 | ||
5e681ec4 PB |
10386 | } |
10387 | else | |
10388 | { | |
10389 | /* For the non-shared case, discard space for relocs against | |
10390 | symbols which turn out to need copy relocs or are not | |
10391 | dynamic. */ | |
10392 | ||
f5385ebf AM |
10393 | if (!h->non_got_ref |
10394 | && ((h->def_dynamic | |
10395 | && !h->def_regular) | |
5e681ec4 PB |
10396 | || (htab->root.dynamic_sections_created |
10397 | && (h->root.type == bfd_link_hash_undefweak | |
10398 | || h->root.type == bfd_link_hash_undefined)))) | |
10399 | { | |
10400 | /* Make sure this symbol is output as a dynamic symbol. | |
10401 | Undefined weak syms won't yet be marked as dynamic. */ | |
10402 | if (h->dynindx == -1 | |
f5385ebf | 10403 | && !h->forced_local) |
5e681ec4 | 10404 | { |
c152c796 | 10405 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
10406 | return FALSE; |
10407 | } | |
10408 | ||
10409 | /* If that succeeded, we know we'll be keeping all the | |
10410 | relocs. */ | |
10411 | if (h->dynindx != -1) | |
10412 | goto keep; | |
10413 | } | |
10414 | ||
10415 | eh->relocs_copied = NULL; | |
10416 | ||
10417 | keep: ; | |
10418 | } | |
10419 | ||
10420 | /* Finally, allocate space. */ | |
10421 | for (p = eh->relocs_copied; p != NULL; p = p->next) | |
10422 | { | |
10423 | asection *sreloc = elf_section_data (p->section)->sreloc; | |
00a97672 | 10424 | sreloc->size += p->count * RELOC_SIZE (htab); |
5e681ec4 PB |
10425 | } |
10426 | ||
10427 | return TRUE; | |
10428 | } | |
10429 | ||
08d1f311 DJ |
10430 | /* Find any dynamic relocs that apply to read-only sections. */ |
10431 | ||
10432 | static bfd_boolean | |
8029a119 | 10433 | elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry * h, void * inf) |
08d1f311 | 10434 | { |
8029a119 NC |
10435 | struct elf32_arm_link_hash_entry * eh; |
10436 | struct elf32_arm_relocs_copied * p; | |
08d1f311 DJ |
10437 | |
10438 | if (h->root.type == bfd_link_hash_warning) | |
10439 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
10440 | ||
10441 | eh = (struct elf32_arm_link_hash_entry *) h; | |
10442 | for (p = eh->relocs_copied; p != NULL; p = p->next) | |
10443 | { | |
10444 | asection *s = p->section; | |
10445 | ||
10446 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
10447 | { | |
10448 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
10449 | ||
10450 | info->flags |= DF_TEXTREL; | |
10451 | ||
10452 | /* Not an error, just cut short the traversal. */ | |
10453 | return FALSE; | |
10454 | } | |
10455 | } | |
10456 | return TRUE; | |
10457 | } | |
10458 | ||
d504ffc8 DJ |
10459 | void |
10460 | bfd_elf32_arm_set_byteswap_code (struct bfd_link_info *info, | |
10461 | int byteswap_code) | |
10462 | { | |
10463 | struct elf32_arm_link_hash_table *globals; | |
10464 | ||
10465 | globals = elf32_arm_hash_table (info); | |
10466 | globals->byteswap_code = byteswap_code; | |
10467 | } | |
10468 | ||
252b5132 RH |
10469 | /* Set the sizes of the dynamic sections. */ |
10470 | ||
b34976b6 | 10471 | static bfd_boolean |
57e8b36a NC |
10472 | elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED, |
10473 | struct bfd_link_info * info) | |
252b5132 RH |
10474 | { |
10475 | bfd * dynobj; | |
10476 | asection * s; | |
b34976b6 AM |
10477 | bfd_boolean plt; |
10478 | bfd_boolean relocs; | |
5e681ec4 PB |
10479 | bfd *ibfd; |
10480 | struct elf32_arm_link_hash_table *htab; | |
252b5132 | 10481 | |
5e681ec4 | 10482 | htab = elf32_arm_hash_table (info); |
252b5132 RH |
10483 | dynobj = elf_hash_table (info)->dynobj; |
10484 | BFD_ASSERT (dynobj != NULL); | |
39b41c9c | 10485 | check_use_blx (htab); |
252b5132 RH |
10486 | |
10487 | if (elf_hash_table (info)->dynamic_sections_created) | |
10488 | { | |
10489 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 10490 | if (info->executable) |
252b5132 RH |
10491 | { |
10492 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
10493 | BFD_ASSERT (s != NULL); | |
eea6121a | 10494 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
252b5132 RH |
10495 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
10496 | } | |
10497 | } | |
5e681ec4 PB |
10498 | |
10499 | /* Set up .got offsets for local syms, and space for local dynamic | |
10500 | relocs. */ | |
10501 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
252b5132 | 10502 | { |
5e681ec4 PB |
10503 | bfd_signed_vma *local_got; |
10504 | bfd_signed_vma *end_local_got; | |
10505 | char *local_tls_type; | |
10506 | bfd_size_type locsymcount; | |
10507 | Elf_Internal_Shdr *symtab_hdr; | |
10508 | asection *srel; | |
3348747a | 10509 | bfd_boolean is_vxworks = elf32_arm_hash_table (info)->vxworks_p; |
5e681ec4 | 10510 | |
0ffa91dd | 10511 | if (! is_arm_elf (ibfd)) |
5e681ec4 PB |
10512 | continue; |
10513 | ||
10514 | for (s = ibfd->sections; s != NULL; s = s->next) | |
10515 | { | |
10516 | struct elf32_arm_relocs_copied *p; | |
10517 | ||
6edfbbad | 10518 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
5e681ec4 PB |
10519 | { |
10520 | if (!bfd_is_abs_section (p->section) | |
10521 | && bfd_is_abs_section (p->section->output_section)) | |
10522 | { | |
10523 | /* Input section has been discarded, either because | |
10524 | it is a copy of a linkonce section or due to | |
10525 | linker script /DISCARD/, so we'll be discarding | |
10526 | the relocs too. */ | |
10527 | } | |
3348747a NS |
10528 | else if (is_vxworks |
10529 | && strcmp (p->section->output_section->name, | |
10530 | ".tls_vars") == 0) | |
10531 | { | |
10532 | /* Relocations in vxworks .tls_vars sections are | |
10533 | handled specially by the loader. */ | |
10534 | } | |
5e681ec4 PB |
10535 | else if (p->count != 0) |
10536 | { | |
10537 | srel = elf_section_data (p->section)->sreloc; | |
00a97672 | 10538 | srel->size += p->count * RELOC_SIZE (htab); |
5e681ec4 PB |
10539 | if ((p->section->output_section->flags & SEC_READONLY) != 0) |
10540 | info->flags |= DF_TEXTREL; | |
10541 | } | |
10542 | } | |
10543 | } | |
10544 | ||
10545 | local_got = elf_local_got_refcounts (ibfd); | |
10546 | if (!local_got) | |
10547 | continue; | |
10548 | ||
0ffa91dd | 10549 | symtab_hdr = & elf_symtab_hdr (ibfd); |
5e681ec4 PB |
10550 | locsymcount = symtab_hdr->sh_info; |
10551 | end_local_got = local_got + locsymcount; | |
ba93b8ac | 10552 | local_tls_type = elf32_arm_local_got_tls_type (ibfd); |
5e681ec4 PB |
10553 | s = htab->sgot; |
10554 | srel = htab->srelgot; | |
10555 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) | |
10556 | { | |
10557 | if (*local_got > 0) | |
10558 | { | |
eea6121a | 10559 | *local_got = s->size; |
ba93b8ac DJ |
10560 | if (*local_tls_type & GOT_TLS_GD) |
10561 | /* TLS_GD relocs need an 8-byte structure in the GOT. */ | |
10562 | s->size += 8; | |
10563 | if (*local_tls_type & GOT_TLS_IE) | |
10564 | s->size += 4; | |
10565 | if (*local_tls_type == GOT_NORMAL) | |
10566 | s->size += 4; | |
10567 | ||
10568 | if (info->shared || *local_tls_type == GOT_TLS_GD) | |
00a97672 | 10569 | srel->size += RELOC_SIZE (htab); |
5e681ec4 PB |
10570 | } |
10571 | else | |
10572 | *local_got = (bfd_vma) -1; | |
10573 | } | |
252b5132 RH |
10574 | } |
10575 | ||
ba93b8ac DJ |
10576 | if (htab->tls_ldm_got.refcount > 0) |
10577 | { | |
10578 | /* Allocate two GOT entries and one dynamic relocation (if necessary) | |
10579 | for R_ARM_TLS_LDM32 relocations. */ | |
10580 | htab->tls_ldm_got.offset = htab->sgot->size; | |
10581 | htab->sgot->size += 8; | |
10582 | if (info->shared) | |
00a97672 | 10583 | htab->srelgot->size += RELOC_SIZE (htab); |
ba93b8ac DJ |
10584 | } |
10585 | else | |
10586 | htab->tls_ldm_got.offset = -1; | |
10587 | ||
5e681ec4 PB |
10588 | /* Allocate global sym .plt and .got entries, and space for global |
10589 | sym dynamic relocs. */ | |
57e8b36a | 10590 | elf_link_hash_traverse (& htab->root, allocate_dynrelocs, info); |
252b5132 | 10591 | |
d504ffc8 DJ |
10592 | /* Here we rummage through the found bfds to collect glue information. */ |
10593 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
c7b8f16e | 10594 | { |
0ffa91dd | 10595 | if (! is_arm_elf (ibfd)) |
e44a2c9c AM |
10596 | continue; |
10597 | ||
c7b8f16e JB |
10598 | /* Initialise mapping tables for code/data. */ |
10599 | bfd_elf32_arm_init_maps (ibfd); | |
906e58ca | 10600 | |
c7b8f16e JB |
10601 | if (!bfd_elf32_arm_process_before_allocation (ibfd, info) |
10602 | || !bfd_elf32_arm_vfp11_erratum_scan (ibfd, info)) | |
10603 | /* xgettext:c-format */ | |
10604 | _bfd_error_handler (_("Errors encountered processing file %s"), | |
10605 | ibfd->filename); | |
10606 | } | |
d504ffc8 | 10607 | |
252b5132 RH |
10608 | /* The check_relocs and adjust_dynamic_symbol entry points have |
10609 | determined the sizes of the various dynamic sections. Allocate | |
10610 | memory for them. */ | |
b34976b6 AM |
10611 | plt = FALSE; |
10612 | relocs = FALSE; | |
252b5132 RH |
10613 | for (s = dynobj->sections; s != NULL; s = s->next) |
10614 | { | |
10615 | const char * name; | |
252b5132 RH |
10616 | |
10617 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
10618 | continue; | |
10619 | ||
10620 | /* It's OK to base decisions on the section name, because none | |
10621 | of the dynobj section names depend upon the input files. */ | |
10622 | name = bfd_get_section_name (dynobj, s); | |
10623 | ||
24a1ba0f | 10624 | if (strcmp (name, ".plt") == 0) |
252b5132 | 10625 | { |
c456f082 AM |
10626 | /* Remember whether there is a PLT. */ |
10627 | plt = s->size != 0; | |
252b5132 | 10628 | } |
0112cd26 | 10629 | else if (CONST_STRNEQ (name, ".rel")) |
252b5132 | 10630 | { |
c456f082 | 10631 | if (s->size != 0) |
252b5132 | 10632 | { |
252b5132 | 10633 | /* Remember whether there are any reloc sections other |
00a97672 RS |
10634 | than .rel(a).plt and .rela.plt.unloaded. */ |
10635 | if (s != htab->srelplt && s != htab->srelplt2) | |
b34976b6 | 10636 | relocs = TRUE; |
252b5132 RH |
10637 | |
10638 | /* We use the reloc_count field as a counter if we need | |
10639 | to copy relocs into the output file. */ | |
10640 | s->reloc_count = 0; | |
10641 | } | |
10642 | } | |
0112cd26 | 10643 | else if (! CONST_STRNEQ (name, ".got") |
c456f082 | 10644 | && strcmp (name, ".dynbss") != 0) |
252b5132 RH |
10645 | { |
10646 | /* It's not one of our sections, so don't allocate space. */ | |
10647 | continue; | |
10648 | } | |
10649 | ||
c456f082 | 10650 | if (s->size == 0) |
252b5132 | 10651 | { |
c456f082 | 10652 | /* If we don't need this section, strip it from the |
00a97672 RS |
10653 | output file. This is mostly to handle .rel(a).bss and |
10654 | .rel(a).plt. We must create both sections in | |
c456f082 AM |
10655 | create_dynamic_sections, because they must be created |
10656 | before the linker maps input sections to output | |
10657 | sections. The linker does that before | |
10658 | adjust_dynamic_symbol is called, and it is that | |
10659 | function which decides whether anything needs to go | |
10660 | into these sections. */ | |
8423293d | 10661 | s->flags |= SEC_EXCLUDE; |
252b5132 RH |
10662 | continue; |
10663 | } | |
10664 | ||
c456f082 AM |
10665 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
10666 | continue; | |
10667 | ||
252b5132 | 10668 | /* Allocate memory for the section contents. */ |
906e58ca | 10669 | s->contents = bfd_zalloc (dynobj, s->size); |
c456f082 | 10670 | if (s->contents == NULL) |
b34976b6 | 10671 | return FALSE; |
252b5132 RH |
10672 | } |
10673 | ||
10674 | if (elf_hash_table (info)->dynamic_sections_created) | |
10675 | { | |
10676 | /* Add some entries to the .dynamic section. We fill in the | |
10677 | values later, in elf32_arm_finish_dynamic_sections, but we | |
10678 | must add the entries now so that we get the correct size for | |
10679 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
10680 | dynamic linker and used by the debugger. */ | |
dc810e39 | 10681 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 10682 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 10683 | |
8532796c | 10684 | if (info->executable) |
252b5132 | 10685 | { |
dc810e39 | 10686 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 10687 | return FALSE; |
252b5132 RH |
10688 | } |
10689 | ||
10690 | if (plt) | |
10691 | { | |
dc810e39 AM |
10692 | if ( !add_dynamic_entry (DT_PLTGOT, 0) |
10693 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
00a97672 RS |
10694 | || !add_dynamic_entry (DT_PLTREL, |
10695 | htab->use_rel ? DT_REL : DT_RELA) | |
dc810e39 | 10696 | || !add_dynamic_entry (DT_JMPREL, 0)) |
b34976b6 | 10697 | return FALSE; |
252b5132 RH |
10698 | } |
10699 | ||
10700 | if (relocs) | |
10701 | { | |
00a97672 RS |
10702 | if (htab->use_rel) |
10703 | { | |
10704 | if (!add_dynamic_entry (DT_REL, 0) | |
10705 | || !add_dynamic_entry (DT_RELSZ, 0) | |
10706 | || !add_dynamic_entry (DT_RELENT, RELOC_SIZE (htab))) | |
10707 | return FALSE; | |
10708 | } | |
10709 | else | |
10710 | { | |
10711 | if (!add_dynamic_entry (DT_RELA, 0) | |
10712 | || !add_dynamic_entry (DT_RELASZ, 0) | |
10713 | || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab))) | |
10714 | return FALSE; | |
10715 | } | |
252b5132 RH |
10716 | } |
10717 | ||
08d1f311 DJ |
10718 | /* If any dynamic relocs apply to a read-only section, |
10719 | then we need a DT_TEXTREL entry. */ | |
10720 | if ((info->flags & DF_TEXTREL) == 0) | |
8029a119 NC |
10721 | elf_link_hash_traverse (& htab->root, elf32_arm_readonly_dynrelocs, |
10722 | info); | |
08d1f311 | 10723 | |
99e4ae17 | 10724 | if ((info->flags & DF_TEXTREL) != 0) |
252b5132 | 10725 | { |
dc810e39 | 10726 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 10727 | return FALSE; |
252b5132 | 10728 | } |
7a2b07ff NS |
10729 | if (htab->vxworks_p |
10730 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) | |
10731 | return FALSE; | |
252b5132 | 10732 | } |
8532796c | 10733 | #undef add_dynamic_entry |
252b5132 | 10734 | |
b34976b6 | 10735 | return TRUE; |
252b5132 RH |
10736 | } |
10737 | ||
252b5132 RH |
10738 | /* Finish up dynamic symbol handling. We set the contents of various |
10739 | dynamic sections here. */ | |
10740 | ||
b34976b6 | 10741 | static bfd_boolean |
906e58ca NC |
10742 | elf32_arm_finish_dynamic_symbol (bfd * output_bfd, |
10743 | struct bfd_link_info * info, | |
10744 | struct elf_link_hash_entry * h, | |
10745 | Elf_Internal_Sym * sym) | |
252b5132 RH |
10746 | { |
10747 | bfd * dynobj; | |
e5a52504 | 10748 | struct elf32_arm_link_hash_table *htab; |
b7693d02 | 10749 | struct elf32_arm_link_hash_entry *eh; |
252b5132 RH |
10750 | |
10751 | dynobj = elf_hash_table (info)->dynobj; | |
e5a52504 | 10752 | htab = elf32_arm_hash_table (info); |
b7693d02 | 10753 | eh = (struct elf32_arm_link_hash_entry *) h; |
252b5132 RH |
10754 | |
10755 | if (h->plt.offset != (bfd_vma) -1) | |
10756 | { | |
10757 | asection * splt; | |
252b5132 | 10758 | asection * srel; |
e5a52504 | 10759 | bfd_byte *loc; |
24a1ba0f | 10760 | bfd_vma plt_index; |
947216bf | 10761 | Elf_Internal_Rela rel; |
252b5132 RH |
10762 | |
10763 | /* This symbol has an entry in the procedure linkage table. Set | |
10764 | it up. */ | |
10765 | ||
10766 | BFD_ASSERT (h->dynindx != -1); | |
10767 | ||
10768 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
00a97672 | 10769 | srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".plt")); |
e5a52504 | 10770 | BFD_ASSERT (splt != NULL && srel != NULL); |
252b5132 | 10771 | |
e5a52504 MM |
10772 | /* Fill in the entry in the procedure linkage table. */ |
10773 | if (htab->symbian_p) | |
10774 | { | |
906e58ca | 10775 | put_arm_insn (htab, output_bfd, |
52ab56c2 PB |
10776 | elf32_arm_symbian_plt_entry[0], |
10777 | splt->contents + h->plt.offset); | |
906e58ca | 10778 | bfd_put_32 (output_bfd, |
52ab56c2 PB |
10779 | elf32_arm_symbian_plt_entry[1], |
10780 | splt->contents + h->plt.offset + 4); | |
906e58ca | 10781 | |
e5a52504 | 10782 | /* Fill in the entry in the .rel.plt section. */ |
2a1b9a48 MM |
10783 | rel.r_offset = (splt->output_section->vma |
10784 | + splt->output_offset | |
52ab56c2 | 10785 | + h->plt.offset + 4); |
e5a52504 | 10786 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT); |
b7693d02 DJ |
10787 | |
10788 | /* Get the index in the procedure linkage table which | |
10789 | corresponds to this symbol. This is the index of this symbol | |
10790 | in all the symbols for which we are making plt entries. The | |
10791 | first entry in the procedure linkage table is reserved. */ | |
906e58ca | 10792 | plt_index = ((h->plt.offset - htab->plt_header_size) |
b7693d02 | 10793 | / htab->plt_entry_size); |
e5a52504 MM |
10794 | } |
10795 | else | |
10796 | { | |
00a97672 | 10797 | bfd_vma got_offset, got_address, plt_address; |
e5a52504 MM |
10798 | bfd_vma got_displacement; |
10799 | asection * sgot; | |
52ab56c2 | 10800 | bfd_byte * ptr; |
906e58ca | 10801 | |
e5a52504 MM |
10802 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); |
10803 | BFD_ASSERT (sgot != NULL); | |
10804 | ||
b7693d02 DJ |
10805 | /* Get the offset into the .got.plt table of the entry that |
10806 | corresponds to this function. */ | |
10807 | got_offset = eh->plt_got_offset; | |
10808 | ||
10809 | /* Get the index in the procedure linkage table which | |
10810 | corresponds to this symbol. This is the index of this symbol | |
10811 | in all the symbols for which we are making plt entries. The | |
10812 | first three entries in .got.plt are reserved; after that | |
10813 | symbols appear in the same order as in .plt. */ | |
10814 | plt_index = (got_offset - 12) / 4; | |
e5a52504 | 10815 | |
00a97672 RS |
10816 | /* Calculate the address of the GOT entry. */ |
10817 | got_address = (sgot->output_section->vma | |
10818 | + sgot->output_offset | |
10819 | + got_offset); | |
5e681ec4 | 10820 | |
00a97672 RS |
10821 | /* ...and the address of the PLT entry. */ |
10822 | plt_address = (splt->output_section->vma | |
10823 | + splt->output_offset | |
10824 | + h->plt.offset); | |
5e681ec4 | 10825 | |
52ab56c2 | 10826 | ptr = htab->splt->contents + h->plt.offset; |
00a97672 RS |
10827 | if (htab->vxworks_p && info->shared) |
10828 | { | |
10829 | unsigned int i; | |
10830 | bfd_vma val; | |
10831 | ||
52ab56c2 | 10832 | for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4) |
00a97672 RS |
10833 | { |
10834 | val = elf32_arm_vxworks_shared_plt_entry[i]; | |
10835 | if (i == 2) | |
10836 | val |= got_address - sgot->output_section->vma; | |
10837 | if (i == 5) | |
10838 | val |= plt_index * RELOC_SIZE (htab); | |
52ab56c2 PB |
10839 | if (i == 2 || i == 5) |
10840 | bfd_put_32 (output_bfd, val, ptr); | |
10841 | else | |
10842 | put_arm_insn (htab, output_bfd, val, ptr); | |
00a97672 RS |
10843 | } |
10844 | } | |
10845 | else if (htab->vxworks_p) | |
b7693d02 | 10846 | { |
00a97672 RS |
10847 | unsigned int i; |
10848 | bfd_vma val; | |
10849 | ||
d3753b85 | 10850 | for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4) |
00a97672 RS |
10851 | { |
10852 | val = elf32_arm_vxworks_exec_plt_entry[i]; | |
10853 | if (i == 2) | |
10854 | val |= got_address; | |
10855 | if (i == 4) | |
10856 | val |= 0xffffff & -((h->plt.offset + i * 4 + 8) >> 2); | |
10857 | if (i == 5) | |
10858 | val |= plt_index * RELOC_SIZE (htab); | |
52ab56c2 PB |
10859 | if (i == 2 || i == 5) |
10860 | bfd_put_32 (output_bfd, val, ptr); | |
10861 | else | |
10862 | put_arm_insn (htab, output_bfd, val, ptr); | |
00a97672 RS |
10863 | } |
10864 | ||
10865 | loc = (htab->srelplt2->contents | |
10866 | + (plt_index * 2 + 1) * RELOC_SIZE (htab)); | |
10867 | ||
10868 | /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation | |
10869 | referencing the GOT for this PLT entry. */ | |
10870 | rel.r_offset = plt_address + 8; | |
10871 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); | |
10872 | rel.r_addend = got_offset; | |
10873 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
10874 | loc += RELOC_SIZE (htab); | |
10875 | ||
10876 | /* Create the R_ARM_ABS32 relocation referencing the | |
10877 | beginning of the PLT for this GOT entry. */ | |
10878 | rel.r_offset = got_address; | |
10879 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32); | |
10880 | rel.r_addend = 0; | |
10881 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
b7693d02 | 10882 | } |
00a97672 RS |
10883 | else |
10884 | { | |
bd97cb95 | 10885 | bfd_signed_vma thumb_refs; |
00a97672 RS |
10886 | /* Calculate the displacement between the PLT slot and the |
10887 | entry in the GOT. The eight-byte offset accounts for the | |
10888 | value produced by adding to pc in the first instruction | |
10889 | of the PLT stub. */ | |
10890 | got_displacement = got_address - (plt_address + 8); | |
b7693d02 | 10891 | |
00a97672 RS |
10892 | BFD_ASSERT ((got_displacement & 0xf0000000) == 0); |
10893 | ||
bd97cb95 DJ |
10894 | thumb_refs = eh->plt_thumb_refcount; |
10895 | if (!htab->use_blx) | |
10896 | thumb_refs += eh->plt_maybe_thumb_refcount; | |
10897 | ||
10898 | if (thumb_refs > 0) | |
00a97672 | 10899 | { |
52ab56c2 PB |
10900 | put_thumb_insn (htab, output_bfd, |
10901 | elf32_arm_plt_thumb_stub[0], ptr - 4); | |
10902 | put_thumb_insn (htab, output_bfd, | |
10903 | elf32_arm_plt_thumb_stub[1], ptr - 2); | |
00a97672 RS |
10904 | } |
10905 | ||
52ab56c2 PB |
10906 | put_arm_insn (htab, output_bfd, |
10907 | elf32_arm_plt_entry[0] | |
10908 | | ((got_displacement & 0x0ff00000) >> 20), | |
10909 | ptr + 0); | |
10910 | put_arm_insn (htab, output_bfd, | |
10911 | elf32_arm_plt_entry[1] | |
10912 | | ((got_displacement & 0x000ff000) >> 12), | |
10913 | ptr+ 4); | |
10914 | put_arm_insn (htab, output_bfd, | |
10915 | elf32_arm_plt_entry[2] | |
10916 | | (got_displacement & 0x00000fff), | |
10917 | ptr + 8); | |
5e681ec4 | 10918 | #ifdef FOUR_WORD_PLT |
52ab56c2 | 10919 | bfd_put_32 (output_bfd, elf32_arm_plt_entry[3], ptr + 12); |
5e681ec4 | 10920 | #endif |
00a97672 | 10921 | } |
252b5132 | 10922 | |
e5a52504 MM |
10923 | /* Fill in the entry in the global offset table. */ |
10924 | bfd_put_32 (output_bfd, | |
10925 | (splt->output_section->vma | |
10926 | + splt->output_offset), | |
10927 | sgot->contents + got_offset); | |
906e58ca | 10928 | |
00a97672 RS |
10929 | /* Fill in the entry in the .rel(a).plt section. */ |
10930 | rel.r_addend = 0; | |
10931 | rel.r_offset = got_address; | |
e5a52504 MM |
10932 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_JUMP_SLOT); |
10933 | } | |
57e8b36a | 10934 | |
00a97672 RS |
10935 | loc = srel->contents + plt_index * RELOC_SIZE (htab); |
10936 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
252b5132 | 10937 | |
f5385ebf | 10938 | if (!h->def_regular) |
252b5132 RH |
10939 | { |
10940 | /* Mark the symbol as undefined, rather than as defined in | |
10941 | the .plt section. Leave the value alone. */ | |
10942 | sym->st_shndx = SHN_UNDEF; | |
d982ba73 PB |
10943 | /* If the symbol is weak, we do need to clear the value. |
10944 | Otherwise, the PLT entry would provide a definition for | |
10945 | the symbol even if the symbol wasn't defined anywhere, | |
10946 | and so the symbol would never be NULL. */ | |
f5385ebf | 10947 | if (!h->ref_regular_nonweak) |
d982ba73 | 10948 | sym->st_value = 0; |
252b5132 RH |
10949 | } |
10950 | } | |
10951 | ||
ba93b8ac DJ |
10952 | if (h->got.offset != (bfd_vma) -1 |
10953 | && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_GD) == 0 | |
10954 | && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_IE) == 0) | |
252b5132 RH |
10955 | { |
10956 | asection * sgot; | |
10957 | asection * srel; | |
947216bf AM |
10958 | Elf_Internal_Rela rel; |
10959 | bfd_byte *loc; | |
00a97672 | 10960 | bfd_vma offset; |
252b5132 RH |
10961 | |
10962 | /* This symbol has an entry in the global offset table. Set it | |
10963 | up. */ | |
252b5132 | 10964 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
00a97672 | 10965 | srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".got")); |
252b5132 RH |
10966 | BFD_ASSERT (sgot != NULL && srel != NULL); |
10967 | ||
00a97672 RS |
10968 | offset = (h->got.offset & ~(bfd_vma) 1); |
10969 | rel.r_addend = 0; | |
252b5132 RH |
10970 | rel.r_offset = (sgot->output_section->vma |
10971 | + sgot->output_offset | |
00a97672 | 10972 | + offset); |
252b5132 | 10973 | |
5e681ec4 PB |
10974 | /* If this is a static link, or it is a -Bsymbolic link and the |
10975 | symbol is defined locally or was forced to be local because | |
10976 | of a version file, we just want to emit a RELATIVE reloc. | |
10977 | The entry in the global offset table will already have been | |
10978 | initialized in the relocate_section function. */ | |
252b5132 | 10979 | if (info->shared |
5e681ec4 PB |
10980 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
10981 | { | |
906e58ca | 10982 | BFD_ASSERT ((h->got.offset & 1) != 0); |
5e681ec4 | 10983 | rel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); |
00a97672 RS |
10984 | if (!htab->use_rel) |
10985 | { | |
10986 | rel.r_addend = bfd_get_32 (output_bfd, sgot->contents + offset); | |
10987 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset); | |
10988 | } | |
5e681ec4 | 10989 | } |
252b5132 RH |
10990 | else |
10991 | { | |
906e58ca | 10992 | BFD_ASSERT ((h->got.offset & 1) == 0); |
00a97672 | 10993 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset); |
252b5132 RH |
10994 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT); |
10995 | } | |
10996 | ||
00a97672 RS |
10997 | loc = srel->contents + srel->reloc_count++ * RELOC_SIZE (htab); |
10998 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
252b5132 RH |
10999 | } |
11000 | ||
f5385ebf | 11001 | if (h->needs_copy) |
252b5132 RH |
11002 | { |
11003 | asection * s; | |
947216bf AM |
11004 | Elf_Internal_Rela rel; |
11005 | bfd_byte *loc; | |
252b5132 RH |
11006 | |
11007 | /* This symbol needs a copy reloc. Set it up. */ | |
252b5132 RH |
11008 | BFD_ASSERT (h->dynindx != -1 |
11009 | && (h->root.type == bfd_link_hash_defined | |
11010 | || h->root.type == bfd_link_hash_defweak)); | |
11011 | ||
11012 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
00a97672 | 11013 | RELOC_SECTION (htab, ".bss")); |
252b5132 RH |
11014 | BFD_ASSERT (s != NULL); |
11015 | ||
00a97672 | 11016 | rel.r_addend = 0; |
252b5132 RH |
11017 | rel.r_offset = (h->root.u.def.value |
11018 | + h->root.u.def.section->output_section->vma | |
11019 | + h->root.u.def.section->output_offset); | |
11020 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY); | |
00a97672 RS |
11021 | loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab); |
11022 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
252b5132 RH |
11023 | } |
11024 | ||
00a97672 RS |
11025 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks, |
11026 | the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative | |
11027 | to the ".got" section. */ | |
252b5132 | 11028 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 |
00a97672 | 11029 | || (!htab->vxworks_p && h == htab->root.hgot)) |
252b5132 RH |
11030 | sym->st_shndx = SHN_ABS; |
11031 | ||
b34976b6 | 11032 | return TRUE; |
252b5132 RH |
11033 | } |
11034 | ||
11035 | /* Finish up the dynamic sections. */ | |
11036 | ||
b34976b6 | 11037 | static bfd_boolean |
57e8b36a | 11038 | elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info) |
252b5132 RH |
11039 | { |
11040 | bfd * dynobj; | |
11041 | asection * sgot; | |
11042 | asection * sdyn; | |
11043 | ||
11044 | dynobj = elf_hash_table (info)->dynobj; | |
11045 | ||
11046 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
229fcec5 | 11047 | BFD_ASSERT (elf32_arm_hash_table (info)->symbian_p || sgot != NULL); |
252b5132 RH |
11048 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
11049 | ||
11050 | if (elf_hash_table (info)->dynamic_sections_created) | |
11051 | { | |
11052 | asection *splt; | |
11053 | Elf32_External_Dyn *dyncon, *dynconend; | |
229fcec5 | 11054 | struct elf32_arm_link_hash_table *htab; |
252b5132 | 11055 | |
229fcec5 | 11056 | htab = elf32_arm_hash_table (info); |
252b5132 | 11057 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
24a1ba0f | 11058 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
252b5132 RH |
11059 | |
11060 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 11061 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
9b485d32 | 11062 | |
252b5132 RH |
11063 | for (; dyncon < dynconend; dyncon++) |
11064 | { | |
11065 | Elf_Internal_Dyn dyn; | |
11066 | const char * name; | |
11067 | asection * s; | |
11068 | ||
11069 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
11070 | ||
11071 | switch (dyn.d_tag) | |
11072 | { | |
229fcec5 MM |
11073 | unsigned int type; |
11074 | ||
252b5132 | 11075 | default: |
7a2b07ff NS |
11076 | if (htab->vxworks_p |
11077 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
11078 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
252b5132 RH |
11079 | break; |
11080 | ||
229fcec5 MM |
11081 | case DT_HASH: |
11082 | name = ".hash"; | |
11083 | goto get_vma_if_bpabi; | |
11084 | case DT_STRTAB: | |
11085 | name = ".dynstr"; | |
11086 | goto get_vma_if_bpabi; | |
11087 | case DT_SYMTAB: | |
11088 | name = ".dynsym"; | |
11089 | goto get_vma_if_bpabi; | |
c0042f5d MM |
11090 | case DT_VERSYM: |
11091 | name = ".gnu.version"; | |
11092 | goto get_vma_if_bpabi; | |
11093 | case DT_VERDEF: | |
11094 | name = ".gnu.version_d"; | |
11095 | goto get_vma_if_bpabi; | |
11096 | case DT_VERNEED: | |
11097 | name = ".gnu.version_r"; | |
11098 | goto get_vma_if_bpabi; | |
11099 | ||
252b5132 RH |
11100 | case DT_PLTGOT: |
11101 | name = ".got"; | |
11102 | goto get_vma; | |
11103 | case DT_JMPREL: | |
00a97672 | 11104 | name = RELOC_SECTION (htab, ".plt"); |
252b5132 RH |
11105 | get_vma: |
11106 | s = bfd_get_section_by_name (output_bfd, name); | |
11107 | BFD_ASSERT (s != NULL); | |
229fcec5 MM |
11108 | if (!htab->symbian_p) |
11109 | dyn.d_un.d_ptr = s->vma; | |
11110 | else | |
11111 | /* In the BPABI, tags in the PT_DYNAMIC section point | |
11112 | at the file offset, not the memory address, for the | |
11113 | convenience of the post linker. */ | |
11114 | dyn.d_un.d_ptr = s->filepos; | |
252b5132 RH |
11115 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
11116 | break; | |
11117 | ||
229fcec5 MM |
11118 | get_vma_if_bpabi: |
11119 | if (htab->symbian_p) | |
11120 | goto get_vma; | |
11121 | break; | |
11122 | ||
252b5132 | 11123 | case DT_PLTRELSZ: |
00a97672 RS |
11124 | s = bfd_get_section_by_name (output_bfd, |
11125 | RELOC_SECTION (htab, ".plt")); | |
252b5132 | 11126 | BFD_ASSERT (s != NULL); |
eea6121a | 11127 | dyn.d_un.d_val = s->size; |
252b5132 RH |
11128 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
11129 | break; | |
906e58ca | 11130 | |
252b5132 | 11131 | case DT_RELSZ: |
00a97672 | 11132 | case DT_RELASZ: |
229fcec5 MM |
11133 | if (!htab->symbian_p) |
11134 | { | |
11135 | /* My reading of the SVR4 ABI indicates that the | |
11136 | procedure linkage table relocs (DT_JMPREL) should be | |
11137 | included in the overall relocs (DT_REL). This is | |
11138 | what Solaris does. However, UnixWare can not handle | |
11139 | that case. Therefore, we override the DT_RELSZ entry | |
11140 | here to make it not include the JMPREL relocs. Since | |
00a97672 | 11141 | the linker script arranges for .rel(a).plt to follow all |
229fcec5 MM |
11142 | other relocation sections, we don't have to worry |
11143 | about changing the DT_REL entry. */ | |
00a97672 RS |
11144 | s = bfd_get_section_by_name (output_bfd, |
11145 | RELOC_SECTION (htab, ".plt")); | |
229fcec5 MM |
11146 | if (s != NULL) |
11147 | dyn.d_un.d_val -= s->size; | |
11148 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
11149 | break; | |
11150 | } | |
8029a119 | 11151 | /* Fall through. */ |
229fcec5 MM |
11152 | |
11153 | case DT_REL: | |
11154 | case DT_RELA: | |
229fcec5 MM |
11155 | /* In the BPABI, the DT_REL tag must point at the file |
11156 | offset, not the VMA, of the first relocation | |
11157 | section. So, we use code similar to that in | |
11158 | elflink.c, but do not check for SHF_ALLOC on the | |
11159 | relcoation section, since relocations sections are | |
11160 | never allocated under the BPABI. The comments above | |
11161 | about Unixware notwithstanding, we include all of the | |
11162 | relocations here. */ | |
11163 | if (htab->symbian_p) | |
11164 | { | |
11165 | unsigned int i; | |
11166 | type = ((dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ) | |
11167 | ? SHT_REL : SHT_RELA); | |
11168 | dyn.d_un.d_val = 0; | |
11169 | for (i = 1; i < elf_numsections (output_bfd); i++) | |
11170 | { | |
906e58ca | 11171 | Elf_Internal_Shdr *hdr |
229fcec5 MM |
11172 | = elf_elfsections (output_bfd)[i]; |
11173 | if (hdr->sh_type == type) | |
11174 | { | |
906e58ca | 11175 | if (dyn.d_tag == DT_RELSZ |
229fcec5 MM |
11176 | || dyn.d_tag == DT_RELASZ) |
11177 | dyn.d_un.d_val += hdr->sh_size; | |
de52dba4 AM |
11178 | else if ((ufile_ptr) hdr->sh_offset |
11179 | <= dyn.d_un.d_val - 1) | |
229fcec5 MM |
11180 | dyn.d_un.d_val = hdr->sh_offset; |
11181 | } | |
11182 | } | |
11183 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
11184 | } | |
252b5132 | 11185 | break; |
88f7bcd5 NC |
11186 | |
11187 | /* Set the bottom bit of DT_INIT/FINI if the | |
11188 | corresponding function is Thumb. */ | |
11189 | case DT_INIT: | |
11190 | name = info->init_function; | |
11191 | goto get_sym; | |
11192 | case DT_FINI: | |
11193 | name = info->fini_function; | |
11194 | get_sym: | |
11195 | /* If it wasn't set by elf_bfd_final_link | |
4cc11e76 | 11196 | then there is nothing to adjust. */ |
88f7bcd5 NC |
11197 | if (dyn.d_un.d_val != 0) |
11198 | { | |
11199 | struct elf_link_hash_entry * eh; | |
11200 | ||
11201 | eh = elf_link_hash_lookup (elf_hash_table (info), name, | |
b34976b6 | 11202 | FALSE, FALSE, TRUE); |
906e58ca | 11203 | if (eh != NULL |
88f7bcd5 NC |
11204 | && ELF_ST_TYPE (eh->type) == STT_ARM_TFUNC) |
11205 | { | |
11206 | dyn.d_un.d_val |= 1; | |
b34976b6 | 11207 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
88f7bcd5 NC |
11208 | } |
11209 | } | |
11210 | break; | |
252b5132 RH |
11211 | } |
11212 | } | |
11213 | ||
24a1ba0f | 11214 | /* Fill in the first entry in the procedure linkage table. */ |
e5a52504 | 11215 | if (splt->size > 0 && elf32_arm_hash_table (info)->plt_header_size) |
f7a74f8c | 11216 | { |
00a97672 RS |
11217 | const bfd_vma *plt0_entry; |
11218 | bfd_vma got_address, plt_address, got_displacement; | |
11219 | ||
11220 | /* Calculate the addresses of the GOT and PLT. */ | |
11221 | got_address = sgot->output_section->vma + sgot->output_offset; | |
11222 | plt_address = splt->output_section->vma + splt->output_offset; | |
11223 | ||
11224 | if (htab->vxworks_p) | |
11225 | { | |
11226 | /* The VxWorks GOT is relocated by the dynamic linker. | |
11227 | Therefore, we must emit relocations rather than simply | |
11228 | computing the values now. */ | |
11229 | Elf_Internal_Rela rel; | |
11230 | ||
11231 | plt0_entry = elf32_arm_vxworks_exec_plt0_entry; | |
52ab56c2 PB |
11232 | put_arm_insn (htab, output_bfd, plt0_entry[0], |
11233 | splt->contents + 0); | |
11234 | put_arm_insn (htab, output_bfd, plt0_entry[1], | |
11235 | splt->contents + 4); | |
11236 | put_arm_insn (htab, output_bfd, plt0_entry[2], | |
11237 | splt->contents + 8); | |
00a97672 RS |
11238 | bfd_put_32 (output_bfd, got_address, splt->contents + 12); |
11239 | ||
8029a119 | 11240 | /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */ |
00a97672 RS |
11241 | rel.r_offset = plt_address + 12; |
11242 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); | |
11243 | rel.r_addend = 0; | |
11244 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, | |
11245 | htab->srelplt2->contents); | |
11246 | } | |
11247 | else | |
11248 | { | |
11249 | got_displacement = got_address - (plt_address + 16); | |
11250 | ||
11251 | plt0_entry = elf32_arm_plt0_entry; | |
52ab56c2 PB |
11252 | put_arm_insn (htab, output_bfd, plt0_entry[0], |
11253 | splt->contents + 0); | |
11254 | put_arm_insn (htab, output_bfd, plt0_entry[1], | |
11255 | splt->contents + 4); | |
11256 | put_arm_insn (htab, output_bfd, plt0_entry[2], | |
11257 | splt->contents + 8); | |
11258 | put_arm_insn (htab, output_bfd, plt0_entry[3], | |
11259 | splt->contents + 12); | |
5e681ec4 | 11260 | |
5e681ec4 | 11261 | #ifdef FOUR_WORD_PLT |
00a97672 RS |
11262 | /* The displacement value goes in the otherwise-unused |
11263 | last word of the second entry. */ | |
11264 | bfd_put_32 (output_bfd, got_displacement, splt->contents + 28); | |
5e681ec4 | 11265 | #else |
00a97672 | 11266 | bfd_put_32 (output_bfd, got_displacement, splt->contents + 16); |
5e681ec4 | 11267 | #endif |
00a97672 | 11268 | } |
f7a74f8c | 11269 | } |
252b5132 RH |
11270 | |
11271 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
11272 | really seem like the right value. */ | |
74541ad4 AM |
11273 | if (splt->output_section->owner == output_bfd) |
11274 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; | |
00a97672 RS |
11275 | |
11276 | if (htab->vxworks_p && !info->shared && htab->splt->size > 0) | |
11277 | { | |
11278 | /* Correct the .rel(a).plt.unloaded relocations. They will have | |
11279 | incorrect symbol indexes. */ | |
11280 | int num_plts; | |
eed62c48 | 11281 | unsigned char *p; |
00a97672 RS |
11282 | |
11283 | num_plts = ((htab->splt->size - htab->plt_header_size) | |
11284 | / htab->plt_entry_size); | |
11285 | p = htab->srelplt2->contents + RELOC_SIZE (htab); | |
11286 | ||
11287 | for (; num_plts; num_plts--) | |
11288 | { | |
11289 | Elf_Internal_Rela rel; | |
11290 | ||
11291 | SWAP_RELOC_IN (htab) (output_bfd, p, &rel); | |
11292 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); | |
11293 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, p); | |
11294 | p += RELOC_SIZE (htab); | |
11295 | ||
11296 | SWAP_RELOC_IN (htab) (output_bfd, p, &rel); | |
11297 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32); | |
11298 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, p); | |
11299 | p += RELOC_SIZE (htab); | |
11300 | } | |
11301 | } | |
252b5132 RH |
11302 | } |
11303 | ||
11304 | /* Fill in the first three entries in the global offset table. */ | |
229fcec5 | 11305 | if (sgot) |
252b5132 | 11306 | { |
229fcec5 MM |
11307 | if (sgot->size > 0) |
11308 | { | |
11309 | if (sdyn == NULL) | |
11310 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
11311 | else | |
11312 | bfd_put_32 (output_bfd, | |
11313 | sdyn->output_section->vma + sdyn->output_offset, | |
11314 | sgot->contents); | |
11315 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
11316 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
11317 | } | |
252b5132 | 11318 | |
229fcec5 MM |
11319 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; |
11320 | } | |
252b5132 | 11321 | |
b34976b6 | 11322 | return TRUE; |
252b5132 RH |
11323 | } |
11324 | ||
ba96a88f | 11325 | static void |
57e8b36a | 11326 | elf32_arm_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED) |
ba96a88f | 11327 | { |
9b485d32 | 11328 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ |
e489d0ae | 11329 | struct elf32_arm_link_hash_table *globals; |
ba96a88f NC |
11330 | |
11331 | i_ehdrp = elf_elfheader (abfd); | |
11332 | ||
94a3258f PB |
11333 | if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_UNKNOWN) |
11334 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_ARM; | |
11335 | else | |
11336 | i_ehdrp->e_ident[EI_OSABI] = 0; | |
ba96a88f | 11337 | i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION; |
e489d0ae | 11338 | |
93204d3a PB |
11339 | if (link_info) |
11340 | { | |
11341 | globals = elf32_arm_hash_table (link_info); | |
11342 | if (globals->byteswap_code) | |
11343 | i_ehdrp->e_flags |= EF_ARM_BE8; | |
11344 | } | |
ba96a88f NC |
11345 | } |
11346 | ||
99e4ae17 | 11347 | static enum elf_reloc_type_class |
57e8b36a | 11348 | elf32_arm_reloc_type_class (const Elf_Internal_Rela *rela) |
99e4ae17 | 11349 | { |
f51e552e | 11350 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
99e4ae17 AJ |
11351 | { |
11352 | case R_ARM_RELATIVE: | |
11353 | return reloc_class_relative; | |
11354 | case R_ARM_JUMP_SLOT: | |
11355 | return reloc_class_plt; | |
11356 | case R_ARM_COPY: | |
11357 | return reloc_class_copy; | |
11358 | default: | |
11359 | return reloc_class_normal; | |
11360 | } | |
11361 | } | |
11362 | ||
e16bb312 NC |
11363 | /* Set the right machine number for an Arm ELF file. */ |
11364 | ||
11365 | static bfd_boolean | |
57e8b36a | 11366 | elf32_arm_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr) |
e16bb312 NC |
11367 | { |
11368 | if (hdr->sh_type == SHT_NOTE) | |
11369 | *flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
11370 | ||
11371 | return TRUE; | |
11372 | } | |
11373 | ||
e489d0ae | 11374 | static void |
57e8b36a | 11375 | elf32_arm_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) |
e16bb312 | 11376 | { |
5a6c6817 | 11377 | bfd_arm_update_notes (abfd, ARM_NOTE_SECTION); |
e16bb312 NC |
11378 | } |
11379 | ||
40a18ebd NC |
11380 | /* Return TRUE if this is an unwinding table entry. */ |
11381 | ||
11382 | static bfd_boolean | |
11383 | is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name) | |
11384 | { | |
0112cd26 NC |
11385 | return (CONST_STRNEQ (name, ELF_STRING_ARM_unwind) |
11386 | || CONST_STRNEQ (name, ELF_STRING_ARM_unwind_once)); | |
40a18ebd NC |
11387 | } |
11388 | ||
11389 | ||
11390 | /* Set the type and flags for an ARM section. We do this by | |
11391 | the section name, which is a hack, but ought to work. */ | |
11392 | ||
11393 | static bfd_boolean | |
11394 | elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec) | |
11395 | { | |
11396 | const char * name; | |
11397 | ||
11398 | name = bfd_get_section_name (abfd, sec); | |
11399 | ||
11400 | if (is_arm_elf_unwind_section_name (abfd, name)) | |
11401 | { | |
11402 | hdr->sh_type = SHT_ARM_EXIDX; | |
11403 | hdr->sh_flags |= SHF_LINK_ORDER; | |
11404 | } | |
11405 | return TRUE; | |
11406 | } | |
11407 | ||
6dc132d9 L |
11408 | /* Handle an ARM specific section when reading an object file. This is |
11409 | called when bfd_section_from_shdr finds a section with an unknown | |
11410 | type. */ | |
40a18ebd NC |
11411 | |
11412 | static bfd_boolean | |
11413 | elf32_arm_section_from_shdr (bfd *abfd, | |
11414 | Elf_Internal_Shdr * hdr, | |
6dc132d9 L |
11415 | const char *name, |
11416 | int shindex) | |
40a18ebd NC |
11417 | { |
11418 | /* There ought to be a place to keep ELF backend specific flags, but | |
11419 | at the moment there isn't one. We just keep track of the | |
11420 | sections by their name, instead. Fortunately, the ABI gives | |
11421 | names for all the ARM specific sections, so we will probably get | |
11422 | away with this. */ | |
11423 | switch (hdr->sh_type) | |
11424 | { | |
11425 | case SHT_ARM_EXIDX: | |
0951f019 RE |
11426 | case SHT_ARM_PREEMPTMAP: |
11427 | case SHT_ARM_ATTRIBUTES: | |
40a18ebd NC |
11428 | break; |
11429 | ||
11430 | default: | |
11431 | return FALSE; | |
11432 | } | |
11433 | ||
6dc132d9 | 11434 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
40a18ebd NC |
11435 | return FALSE; |
11436 | ||
11437 | return TRUE; | |
11438 | } | |
e489d0ae | 11439 | |
8e3de13a NC |
11440 | /* A structure used to record a list of sections, independently |
11441 | of the next and prev fields in the asection structure. */ | |
11442 | typedef struct section_list | |
11443 | { | |
11444 | asection * sec; | |
11445 | struct section_list * next; | |
11446 | struct section_list * prev; | |
11447 | } | |
11448 | section_list; | |
11449 | ||
11450 | /* Unfortunately we need to keep a list of sections for which | |
11451 | an _arm_elf_section_data structure has been allocated. This | |
11452 | is because it is possible for functions like elf32_arm_write_section | |
11453 | to be called on a section which has had an elf_data_structure | |
11454 | allocated for it (and so the used_by_bfd field is valid) but | |
11455 | for which the ARM extended version of this structure - the | |
11456 | _arm_elf_section_data structure - has not been allocated. */ | |
11457 | static section_list * sections_with_arm_elf_section_data = NULL; | |
11458 | ||
11459 | static void | |
957c6e41 | 11460 | record_section_with_arm_elf_section_data (asection * sec) |
8e3de13a NC |
11461 | { |
11462 | struct section_list * entry; | |
11463 | ||
957c6e41 | 11464 | entry = bfd_malloc (sizeof (* entry)); |
8e3de13a NC |
11465 | if (entry == NULL) |
11466 | return; | |
11467 | entry->sec = sec; | |
11468 | entry->next = sections_with_arm_elf_section_data; | |
11469 | entry->prev = NULL; | |
11470 | if (entry->next != NULL) | |
11471 | entry->next->prev = entry; | |
11472 | sections_with_arm_elf_section_data = entry; | |
11473 | } | |
11474 | ||
44444f50 NC |
11475 | static struct section_list * |
11476 | find_arm_elf_section_entry (asection * sec) | |
8e3de13a NC |
11477 | { |
11478 | struct section_list * entry; | |
bd4aae00 | 11479 | static struct section_list * last_entry = NULL; |
8e3de13a | 11480 | |
bd4aae00 NC |
11481 | /* This is a short cut for the typical case where the sections are added |
11482 | to the sections_with_arm_elf_section_data list in forward order and | |
11483 | then looked up here in backwards order. This makes a real difference | |
11484 | to the ld-srec/sec64k.exp linker test. */ | |
44444f50 | 11485 | entry = sections_with_arm_elf_section_data; |
bd4aae00 NC |
11486 | if (last_entry != NULL) |
11487 | { | |
11488 | if (last_entry->sec == sec) | |
44444f50 NC |
11489 | entry = last_entry; |
11490 | else if (last_entry->next != NULL | |
11491 | && last_entry->next->sec == sec) | |
11492 | entry = last_entry->next; | |
bd4aae00 | 11493 | } |
44444f50 NC |
11494 | |
11495 | for (; entry; entry = entry->next) | |
8e3de13a | 11496 | if (entry->sec == sec) |
44444f50 | 11497 | break; |
bd4aae00 | 11498 | |
44444f50 NC |
11499 | if (entry) |
11500 | /* Record the entry prior to this one - it is the entry we are most | |
11501 | likely to want to locate next time. Also this way if we have been | |
11502 | called from unrecord_section_with_arm_elf_section_data() we will not | |
11503 | be caching a pointer that is about to be freed. */ | |
11504 | last_entry = entry->prev; | |
11505 | ||
11506 | return entry; | |
11507 | } | |
11508 | ||
11509 | static _arm_elf_section_data * | |
11510 | get_arm_elf_section_data (asection * sec) | |
11511 | { | |
11512 | struct section_list * entry; | |
11513 | ||
11514 | entry = find_arm_elf_section_entry (sec); | |
11515 | ||
11516 | if (entry) | |
11517 | return elf32_arm_section_data (entry->sec); | |
11518 | else | |
11519 | return NULL; | |
8e3de13a NC |
11520 | } |
11521 | ||
11522 | static void | |
11523 | unrecord_section_with_arm_elf_section_data (asection * sec) | |
11524 | { | |
11525 | struct section_list * entry; | |
11526 | ||
44444f50 NC |
11527 | entry = find_arm_elf_section_entry (sec); |
11528 | ||
11529 | if (entry) | |
11530 | { | |
11531 | if (entry->prev != NULL) | |
11532 | entry->prev->next = entry->next; | |
11533 | if (entry->next != NULL) | |
11534 | entry->next->prev = entry->prev; | |
11535 | if (entry == sections_with_arm_elf_section_data) | |
11536 | sections_with_arm_elf_section_data = entry->next; | |
11537 | free (entry); | |
11538 | } | |
8e3de13a NC |
11539 | } |
11540 | ||
e489d0ae | 11541 | |
4e617b1e PB |
11542 | typedef struct |
11543 | { | |
11544 | void *finfo; | |
11545 | struct bfd_link_info *info; | |
91a5743d PB |
11546 | asection *sec; |
11547 | int sec_shndx; | |
4e617b1e PB |
11548 | bfd_boolean (*func) (void *, const char *, Elf_Internal_Sym *, |
11549 | asection *, struct elf_link_hash_entry *); | |
11550 | } output_arch_syminfo; | |
11551 | ||
11552 | enum map_symbol_type | |
11553 | { | |
11554 | ARM_MAP_ARM, | |
11555 | ARM_MAP_THUMB, | |
11556 | ARM_MAP_DATA | |
11557 | }; | |
11558 | ||
11559 | ||
7413f23f | 11560 | /* Output a single mapping symbol. */ |
4e617b1e PB |
11561 | |
11562 | static bfd_boolean | |
7413f23f DJ |
11563 | elf32_arm_output_map_sym (output_arch_syminfo *osi, |
11564 | enum map_symbol_type type, | |
11565 | bfd_vma offset) | |
4e617b1e PB |
11566 | { |
11567 | static const char *names[3] = {"$a", "$t", "$d"}; | |
11568 | struct elf32_arm_link_hash_table *htab; | |
11569 | Elf_Internal_Sym sym; | |
11570 | ||
11571 | htab = elf32_arm_hash_table (osi->info); | |
91a5743d PB |
11572 | sym.st_value = osi->sec->output_section->vma |
11573 | + osi->sec->output_offset | |
11574 | + offset; | |
4e617b1e PB |
11575 | sym.st_size = 0; |
11576 | sym.st_other = 0; | |
11577 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
91a5743d PB |
11578 | sym.st_shndx = osi->sec_shndx; |
11579 | if (!osi->func (osi->finfo, names[type], &sym, osi->sec, NULL)) | |
4e617b1e PB |
11580 | return FALSE; |
11581 | return TRUE; | |
11582 | } | |
11583 | ||
11584 | ||
11585 | /* Output mapping symbols for PLT entries associated with H. */ | |
11586 | ||
11587 | static bfd_boolean | |
11588 | elf32_arm_output_plt_map (struct elf_link_hash_entry *h, void *inf) | |
11589 | { | |
11590 | output_arch_syminfo *osi = (output_arch_syminfo *) inf; | |
11591 | struct elf32_arm_link_hash_table *htab; | |
11592 | struct elf32_arm_link_hash_entry *eh; | |
11593 | bfd_vma addr; | |
11594 | ||
11595 | htab = elf32_arm_hash_table (osi->info); | |
11596 | ||
11597 | if (h->root.type == bfd_link_hash_indirect) | |
11598 | return TRUE; | |
11599 | ||
11600 | if (h->root.type == bfd_link_hash_warning) | |
11601 | /* When warning symbols are created, they **replace** the "real" | |
11602 | entry in the hash table, thus we never get to see the real | |
11603 | symbol in a hash traversal. So look at it now. */ | |
11604 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
11605 | ||
11606 | if (h->plt.offset == (bfd_vma) -1) | |
11607 | return TRUE; | |
11608 | ||
11609 | eh = (struct elf32_arm_link_hash_entry *) h; | |
11610 | addr = h->plt.offset; | |
11611 | if (htab->symbian_p) | |
11612 | { | |
7413f23f | 11613 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr)) |
4e617b1e | 11614 | return FALSE; |
7413f23f | 11615 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 4)) |
4e617b1e PB |
11616 | return FALSE; |
11617 | } | |
11618 | else if (htab->vxworks_p) | |
11619 | { | |
7413f23f | 11620 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr)) |
4e617b1e | 11621 | return FALSE; |
7413f23f | 11622 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 8)) |
4e617b1e | 11623 | return FALSE; |
7413f23f | 11624 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr + 12)) |
4e617b1e | 11625 | return FALSE; |
7413f23f | 11626 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 20)) |
4e617b1e PB |
11627 | return FALSE; |
11628 | } | |
11629 | else | |
11630 | { | |
bd97cb95 DJ |
11631 | bfd_signed_vma thumb_refs; |
11632 | ||
11633 | thumb_refs = eh->plt_thumb_refcount; | |
11634 | if (!htab->use_blx) | |
11635 | thumb_refs += eh->plt_maybe_thumb_refcount; | |
4e617b1e | 11636 | |
bd97cb95 | 11637 | if (thumb_refs > 0) |
4e617b1e | 11638 | { |
7413f23f | 11639 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_THUMB, addr - 4)) |
4e617b1e PB |
11640 | return FALSE; |
11641 | } | |
11642 | #ifdef FOUR_WORD_PLT | |
7413f23f | 11643 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr)) |
4e617b1e | 11644 | return FALSE; |
7413f23f | 11645 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 12)) |
4e617b1e PB |
11646 | return FALSE; |
11647 | #else | |
906e58ca | 11648 | /* A three-word PLT with no Thumb thunk contains only Arm code, |
4e617b1e PB |
11649 | so only need to output a mapping symbol for the first PLT entry and |
11650 | entries with thumb thunks. */ | |
bd97cb95 | 11651 | if (thumb_refs > 0 || addr == 20) |
4e617b1e | 11652 | { |
7413f23f | 11653 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr)) |
4e617b1e PB |
11654 | return FALSE; |
11655 | } | |
11656 | #endif | |
11657 | } | |
11658 | ||
11659 | return TRUE; | |
11660 | } | |
11661 | ||
7413f23f DJ |
11662 | /* Output a single local symbol for a generated stub. */ |
11663 | ||
11664 | static bfd_boolean | |
11665 | elf32_arm_output_stub_sym (output_arch_syminfo *osi, const char *name, | |
11666 | bfd_vma offset, bfd_vma size) | |
11667 | { | |
11668 | struct elf32_arm_link_hash_table *htab; | |
11669 | Elf_Internal_Sym sym; | |
11670 | ||
11671 | htab = elf32_arm_hash_table (osi->info); | |
11672 | sym.st_value = osi->sec->output_section->vma | |
11673 | + osi->sec->output_offset | |
11674 | + offset; | |
11675 | sym.st_size = size; | |
11676 | sym.st_other = 0; | |
11677 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
11678 | sym.st_shndx = osi->sec_shndx; | |
11679 | if (!osi->func (osi->finfo, name, &sym, osi->sec, NULL)) | |
11680 | return FALSE; | |
11681 | return TRUE; | |
11682 | } | |
4e617b1e | 11683 | |
da5938a2 | 11684 | static bfd_boolean |
8029a119 NC |
11685 | arm_map_one_stub (struct bfd_hash_entry * gen_entry, |
11686 | void * in_arg) | |
da5938a2 NC |
11687 | { |
11688 | struct elf32_arm_stub_hash_entry *stub_entry; | |
11689 | struct bfd_link_info *info; | |
11690 | struct elf32_arm_link_hash_table *htab; | |
11691 | asection *stub_sec; | |
11692 | bfd_vma addr; | |
7413f23f | 11693 | char *stub_name; |
9a008db3 | 11694 | output_arch_syminfo *osi; |
461a49ca DJ |
11695 | const insn_sequence *template; |
11696 | enum stub_insn_type prev_type; | |
11697 | int size; | |
11698 | int i; | |
11699 | enum map_symbol_type sym_type; | |
da5938a2 NC |
11700 | |
11701 | /* Massage our args to the form they really have. */ | |
11702 | stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry; | |
9a008db3 | 11703 | osi = (output_arch_syminfo *) in_arg; |
da5938a2 | 11704 | |
da5938a2 NC |
11705 | info = osi->info; |
11706 | ||
11707 | htab = elf32_arm_hash_table (info); | |
11708 | stub_sec = stub_entry->stub_sec; | |
11709 | ||
11710 | /* Ensure this stub is attached to the current section being | |
7413f23f | 11711 | processed. */ |
da5938a2 NC |
11712 | if (stub_sec != osi->sec) |
11713 | return TRUE; | |
11714 | ||
7413f23f DJ |
11715 | addr = (bfd_vma) stub_entry->stub_offset; |
11716 | stub_name = stub_entry->output_name; | |
da5938a2 | 11717 | |
461a49ca DJ |
11718 | template = stub_entry->stub_template; |
11719 | switch(template[0].type) | |
7413f23f | 11720 | { |
461a49ca DJ |
11721 | case ARM_TYPE: |
11722 | if (!elf32_arm_output_stub_sym (osi, stub_name, addr, stub_entry->stub_size)) | |
da5938a2 NC |
11723 | return FALSE; |
11724 | break; | |
461a49ca DJ |
11725 | case THUMB16_TYPE: |
11726 | if (!elf32_arm_output_stub_sym (osi, stub_name, addr | 1, | |
11727 | stub_entry->stub_size)) | |
da5938a2 NC |
11728 | return FALSE; |
11729 | break; | |
11730 | default: | |
11731 | BFD_FAIL (); | |
7413f23f | 11732 | } |
da5938a2 | 11733 | |
461a49ca DJ |
11734 | prev_type = DATA_TYPE; |
11735 | size = 0; | |
11736 | for (i = 0; i < stub_entry->stub_template_size; i++) | |
11737 | { | |
11738 | switch(template[i].type) | |
11739 | { | |
11740 | case ARM_TYPE: | |
11741 | sym_type = ARM_MAP_ARM; | |
11742 | break; | |
11743 | ||
11744 | case THUMB16_TYPE: | |
11745 | sym_type = ARM_MAP_THUMB; | |
11746 | break; | |
11747 | ||
11748 | case DATA_TYPE: | |
11749 | sym_type = ARM_MAP_DATA; | |
11750 | break; | |
11751 | ||
11752 | default: | |
11753 | BFD_FAIL (); | |
11754 | } | |
11755 | ||
11756 | if (template[i].type != prev_type) | |
11757 | { | |
11758 | prev_type = template[i].type; | |
11759 | if (!elf32_arm_output_map_sym (osi, sym_type, addr + size)) | |
11760 | return FALSE; | |
11761 | } | |
11762 | ||
11763 | switch(template[i].type) | |
11764 | { | |
11765 | case ARM_TYPE: | |
11766 | size += 4; | |
11767 | break; | |
11768 | ||
11769 | case THUMB16_TYPE: | |
11770 | size += 2; | |
11771 | break; | |
11772 | ||
11773 | case DATA_TYPE: | |
11774 | size += 4; | |
11775 | break; | |
11776 | ||
11777 | default: | |
11778 | BFD_FAIL (); | |
11779 | } | |
11780 | } | |
11781 | ||
da5938a2 NC |
11782 | return TRUE; |
11783 | } | |
11784 | ||
91a5743d | 11785 | /* Output mapping symbols for linker generated sections. */ |
4e617b1e PB |
11786 | |
11787 | static bfd_boolean | |
11788 | elf32_arm_output_arch_local_syms (bfd *output_bfd, | |
906e58ca NC |
11789 | struct bfd_link_info *info, |
11790 | void *finfo, | |
11791 | bfd_boolean (*func) (void *, const char *, | |
11792 | Elf_Internal_Sym *, | |
11793 | asection *, | |
11794 | struct elf_link_hash_entry *)) | |
4e617b1e PB |
11795 | { |
11796 | output_arch_syminfo osi; | |
11797 | struct elf32_arm_link_hash_table *htab; | |
91a5743d PB |
11798 | bfd_vma offset; |
11799 | bfd_size_type size; | |
4e617b1e PB |
11800 | |
11801 | htab = elf32_arm_hash_table (info); | |
906e58ca | 11802 | check_use_blx (htab); |
91a5743d | 11803 | |
4e617b1e PB |
11804 | osi.finfo = finfo; |
11805 | osi.info = info; | |
11806 | osi.func = func; | |
906e58ca | 11807 | |
91a5743d PB |
11808 | /* ARM->Thumb glue. */ |
11809 | if (htab->arm_glue_size > 0) | |
11810 | { | |
11811 | osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner, | |
11812 | ARM2THUMB_GLUE_SECTION_NAME); | |
11813 | ||
11814 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
11815 | (output_bfd, osi.sec->output_section); | |
11816 | if (info->shared || htab->root.is_relocatable_executable | |
11817 | || htab->pic_veneer) | |
11818 | size = ARM2THUMB_PIC_GLUE_SIZE; | |
11819 | else if (htab->use_blx) | |
11820 | size = ARM2THUMB_V5_STATIC_GLUE_SIZE; | |
11821 | else | |
11822 | size = ARM2THUMB_STATIC_GLUE_SIZE; | |
4e617b1e | 11823 | |
91a5743d PB |
11824 | for (offset = 0; offset < htab->arm_glue_size; offset += size) |
11825 | { | |
7413f23f DJ |
11826 | elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, offset); |
11827 | elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, offset + size - 4); | |
91a5743d PB |
11828 | } |
11829 | } | |
11830 | ||
11831 | /* Thumb->ARM glue. */ | |
11832 | if (htab->thumb_glue_size > 0) | |
11833 | { | |
11834 | osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner, | |
11835 | THUMB2ARM_GLUE_SECTION_NAME); | |
11836 | ||
11837 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
11838 | (output_bfd, osi.sec->output_section); | |
11839 | size = THUMB2ARM_GLUE_SIZE; | |
11840 | ||
11841 | for (offset = 0; offset < htab->thumb_glue_size; offset += size) | |
11842 | { | |
7413f23f DJ |
11843 | elf32_arm_output_map_sym (&osi, ARM_MAP_THUMB, offset); |
11844 | elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, offset + 4); | |
91a5743d PB |
11845 | } |
11846 | } | |
11847 | ||
845b51d6 PB |
11848 | /* ARMv4 BX veneers. */ |
11849 | if (htab->bx_glue_size > 0) | |
11850 | { | |
11851 | osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner, | |
11852 | ARM_BX_GLUE_SECTION_NAME); | |
11853 | ||
11854 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
11855 | (output_bfd, osi.sec->output_section); | |
11856 | ||
7413f23f | 11857 | elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0); |
845b51d6 PB |
11858 | } |
11859 | ||
8029a119 NC |
11860 | /* Long calls stubs. */ |
11861 | if (htab->stub_bfd && htab->stub_bfd->sections) | |
11862 | { | |
da5938a2 | 11863 | asection* stub_sec; |
8029a119 | 11864 | |
da5938a2 NC |
11865 | for (stub_sec = htab->stub_bfd->sections; |
11866 | stub_sec != NULL; | |
8029a119 NC |
11867 | stub_sec = stub_sec->next) |
11868 | { | |
11869 | /* Ignore non-stub sections. */ | |
11870 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
11871 | continue; | |
da5938a2 | 11872 | |
8029a119 | 11873 | osi.sec = stub_sec; |
da5938a2 | 11874 | |
8029a119 NC |
11875 | osi.sec_shndx = _bfd_elf_section_from_bfd_section |
11876 | (output_bfd, osi.sec->output_section); | |
da5938a2 | 11877 | |
8029a119 NC |
11878 | bfd_hash_traverse (&htab->stub_hash_table, arm_map_one_stub, &osi); |
11879 | } | |
11880 | } | |
da5938a2 | 11881 | |
91a5743d PB |
11882 | /* Finally, output mapping symbols for the PLT. */ |
11883 | if (!htab->splt || htab->splt->size == 0) | |
11884 | return TRUE; | |
11885 | ||
11886 | osi.sec_shndx = _bfd_elf_section_from_bfd_section (output_bfd, | |
8029a119 | 11887 | htab->splt->output_section); |
91a5743d | 11888 | osi.sec = htab->splt; |
4e617b1e PB |
11889 | /* Output mapping symbols for the plt header. SymbianOS does not have a |
11890 | plt header. */ | |
11891 | if (htab->vxworks_p) | |
11892 | { | |
11893 | /* VxWorks shared libraries have no PLT header. */ | |
11894 | if (!info->shared) | |
11895 | { | |
7413f23f | 11896 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0)) |
4e617b1e | 11897 | return FALSE; |
7413f23f | 11898 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 12)) |
4e617b1e PB |
11899 | return FALSE; |
11900 | } | |
11901 | } | |
11902 | else if (!htab->symbian_p) | |
11903 | { | |
7413f23f | 11904 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0)) |
4e617b1e PB |
11905 | return FALSE; |
11906 | #ifndef FOUR_WORD_PLT | |
7413f23f | 11907 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 16)) |
4e617b1e PB |
11908 | return FALSE; |
11909 | #endif | |
11910 | } | |
11911 | ||
11912 | elf_link_hash_traverse (&htab->root, elf32_arm_output_plt_map, (void *) &osi); | |
11913 | return TRUE; | |
11914 | } | |
11915 | ||
e489d0ae PB |
11916 | /* Allocate target specific section data. */ |
11917 | ||
11918 | static bfd_boolean | |
11919 | elf32_arm_new_section_hook (bfd *abfd, asection *sec) | |
11920 | { | |
f592407e AM |
11921 | if (!sec->used_by_bfd) |
11922 | { | |
11923 | _arm_elf_section_data *sdata; | |
11924 | bfd_size_type amt = sizeof (*sdata); | |
e489d0ae | 11925 | |
f592407e AM |
11926 | sdata = bfd_zalloc (abfd, amt); |
11927 | if (sdata == NULL) | |
11928 | return FALSE; | |
11929 | sec->used_by_bfd = sdata; | |
11930 | } | |
e489d0ae | 11931 | |
957c6e41 | 11932 | record_section_with_arm_elf_section_data (sec); |
8e3de13a | 11933 | |
e489d0ae PB |
11934 | return _bfd_elf_new_section_hook (abfd, sec); |
11935 | } | |
11936 | ||
11937 | ||
11938 | /* Used to order a list of mapping symbols by address. */ | |
11939 | ||
11940 | static int | |
11941 | elf32_arm_compare_mapping (const void * a, const void * b) | |
11942 | { | |
7f6a71ff JM |
11943 | const elf32_arm_section_map *amap = (const elf32_arm_section_map *) a; |
11944 | const elf32_arm_section_map *bmap = (const elf32_arm_section_map *) b; | |
11945 | ||
11946 | if (amap->vma > bmap->vma) | |
11947 | return 1; | |
11948 | else if (amap->vma < bmap->vma) | |
11949 | return -1; | |
11950 | else if (amap->type > bmap->type) | |
11951 | /* Ensure results do not depend on the host qsort for objects with | |
11952 | multiple mapping symbols at the same address by sorting on type | |
11953 | after vma. */ | |
11954 | return 1; | |
11955 | else if (amap->type < bmap->type) | |
11956 | return -1; | |
11957 | else | |
11958 | return 0; | |
e489d0ae PB |
11959 | } |
11960 | ||
11961 | ||
11962 | /* Do code byteswapping. Return FALSE afterwards so that the section is | |
11963 | written out as normal. */ | |
11964 | ||
11965 | static bfd_boolean | |
c7b8f16e | 11966 | elf32_arm_write_section (bfd *output_bfd, |
8029a119 NC |
11967 | struct bfd_link_info *link_info, |
11968 | asection *sec, | |
e489d0ae PB |
11969 | bfd_byte *contents) |
11970 | { | |
c7b8f16e | 11971 | int mapcount, errcount; |
8e3de13a | 11972 | _arm_elf_section_data *arm_data; |
c7b8f16e | 11973 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); |
e489d0ae | 11974 | elf32_arm_section_map *map; |
c7b8f16e | 11975 | elf32_vfp11_erratum_list *errnode; |
e489d0ae PB |
11976 | bfd_vma ptr; |
11977 | bfd_vma end; | |
c7b8f16e | 11978 | bfd_vma offset = sec->output_section->vma + sec->output_offset; |
e489d0ae PB |
11979 | bfd_byte tmp; |
11980 | int i; | |
57e8b36a | 11981 | |
8e3de13a NC |
11982 | /* If this section has not been allocated an _arm_elf_section_data |
11983 | structure then we cannot record anything. */ | |
11984 | arm_data = get_arm_elf_section_data (sec); | |
11985 | if (arm_data == NULL) | |
11986 | return FALSE; | |
11987 | ||
11988 | mapcount = arm_data->mapcount; | |
11989 | map = arm_data->map; | |
c7b8f16e JB |
11990 | errcount = arm_data->erratumcount; |
11991 | ||
11992 | if (errcount != 0) | |
11993 | { | |
11994 | unsigned int endianflip = bfd_big_endian (output_bfd) ? 3 : 0; | |
11995 | ||
11996 | for (errnode = arm_data->erratumlist; errnode != 0; | |
11997 | errnode = errnode->next) | |
11998 | { | |
11999 | bfd_vma index = errnode->vma - offset; | |
12000 | ||
12001 | switch (errnode->type) | |
12002 | { | |
12003 | case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER: | |
12004 | { | |
12005 | bfd_vma branch_to_veneer; | |
12006 | /* Original condition code of instruction, plus bit mask for | |
12007 | ARM B instruction. */ | |
12008 | unsigned int insn = (errnode->u.b.vfp_insn & 0xf0000000) | |
12009 | | 0x0a000000; | |
12010 | ||
12011 | /* The instruction is before the label. */ | |
12012 | index -= 4; | |
12013 | ||
12014 | /* Above offset included in -4 below. */ | |
12015 | branch_to_veneer = errnode->u.b.veneer->vma | |
12016 | - errnode->vma - 4; | |
12017 | ||
12018 | if ((signed) branch_to_veneer < -(1 << 25) | |
12019 | || (signed) branch_to_veneer >= (1 << 25)) | |
12020 | (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of " | |
12021 | "range"), output_bfd); | |
12022 | ||
12023 | insn |= (branch_to_veneer >> 2) & 0xffffff; | |
12024 | contents[endianflip ^ index] = insn & 0xff; | |
12025 | contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff; | |
12026 | contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff; | |
12027 | contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff; | |
12028 | } | |
12029 | break; | |
12030 | ||
12031 | case VFP11_ERRATUM_ARM_VENEER: | |
12032 | { | |
12033 | bfd_vma branch_from_veneer; | |
12034 | unsigned int insn; | |
12035 | ||
12036 | /* Take size of veneer into account. */ | |
12037 | branch_from_veneer = errnode->u.v.branch->vma | |
12038 | - errnode->vma - 12; | |
12039 | ||
12040 | if ((signed) branch_from_veneer < -(1 << 25) | |
12041 | || (signed) branch_from_veneer >= (1 << 25)) | |
12042 | (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of " | |
12043 | "range"), output_bfd); | |
12044 | ||
12045 | /* Original instruction. */ | |
12046 | insn = errnode->u.v.branch->u.b.vfp_insn; | |
12047 | contents[endianflip ^ index] = insn & 0xff; | |
12048 | contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff; | |
12049 | contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff; | |
12050 | contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff; | |
12051 | ||
12052 | /* Branch back to insn after original insn. */ | |
12053 | insn = 0xea000000 | ((branch_from_veneer >> 2) & 0xffffff); | |
12054 | contents[endianflip ^ (index + 4)] = insn & 0xff; | |
12055 | contents[endianflip ^ (index + 5)] = (insn >> 8) & 0xff; | |
12056 | contents[endianflip ^ (index + 6)] = (insn >> 16) & 0xff; | |
12057 | contents[endianflip ^ (index + 7)] = (insn >> 24) & 0xff; | |
12058 | } | |
12059 | break; | |
12060 | ||
12061 | default: | |
12062 | abort (); | |
12063 | } | |
12064 | } | |
12065 | } | |
e489d0ae PB |
12066 | |
12067 | if (mapcount == 0) | |
12068 | return FALSE; | |
12069 | ||
c7b8f16e | 12070 | if (globals->byteswap_code) |
e489d0ae | 12071 | { |
c7b8f16e | 12072 | qsort (map, mapcount, sizeof (* map), elf32_arm_compare_mapping); |
57e8b36a | 12073 | |
c7b8f16e JB |
12074 | ptr = map[0].vma; |
12075 | for (i = 0; i < mapcount; i++) | |
12076 | { | |
12077 | if (i == mapcount - 1) | |
12078 | end = sec->size; | |
12079 | else | |
12080 | end = map[i + 1].vma; | |
e489d0ae | 12081 | |
c7b8f16e | 12082 | switch (map[i].type) |
e489d0ae | 12083 | { |
c7b8f16e JB |
12084 | case 'a': |
12085 | /* Byte swap code words. */ | |
12086 | while (ptr + 3 < end) | |
12087 | { | |
12088 | tmp = contents[ptr]; | |
12089 | contents[ptr] = contents[ptr + 3]; | |
12090 | contents[ptr + 3] = tmp; | |
12091 | tmp = contents[ptr + 1]; | |
12092 | contents[ptr + 1] = contents[ptr + 2]; | |
12093 | contents[ptr + 2] = tmp; | |
12094 | ptr += 4; | |
12095 | } | |
12096 | break; | |
e489d0ae | 12097 | |
c7b8f16e JB |
12098 | case 't': |
12099 | /* Byte swap code halfwords. */ | |
12100 | while (ptr + 1 < end) | |
12101 | { | |
12102 | tmp = contents[ptr]; | |
12103 | contents[ptr] = contents[ptr + 1]; | |
12104 | contents[ptr + 1] = tmp; | |
12105 | ptr += 2; | |
12106 | } | |
12107 | break; | |
12108 | ||
12109 | case 'd': | |
12110 | /* Leave data alone. */ | |
12111 | break; | |
12112 | } | |
12113 | ptr = end; | |
12114 | } | |
e489d0ae | 12115 | } |
8e3de13a | 12116 | |
93204d3a | 12117 | free (map); |
8e3de13a | 12118 | arm_data->mapcount = 0; |
c7b8f16e | 12119 | arm_data->mapsize = 0; |
8e3de13a NC |
12120 | arm_data->map = NULL; |
12121 | unrecord_section_with_arm_elf_section_data (sec); | |
12122 | ||
e489d0ae PB |
12123 | return FALSE; |
12124 | } | |
12125 | ||
957c6e41 NC |
12126 | static void |
12127 | unrecord_section_via_map_over_sections (bfd * abfd ATTRIBUTE_UNUSED, | |
12128 | asection * sec, | |
12129 | void * ignore ATTRIBUTE_UNUSED) | |
12130 | { | |
12131 | unrecord_section_with_arm_elf_section_data (sec); | |
12132 | } | |
12133 | ||
12134 | static bfd_boolean | |
12135 | elf32_arm_close_and_cleanup (bfd * abfd) | |
12136 | { | |
b25e3d87 L |
12137 | if (abfd->sections) |
12138 | bfd_map_over_sections (abfd, | |
12139 | unrecord_section_via_map_over_sections, | |
12140 | NULL); | |
957c6e41 NC |
12141 | |
12142 | return _bfd_elf_close_and_cleanup (abfd); | |
12143 | } | |
12144 | ||
b25e3d87 L |
12145 | static bfd_boolean |
12146 | elf32_arm_bfd_free_cached_info (bfd * abfd) | |
12147 | { | |
12148 | if (abfd->sections) | |
12149 | bfd_map_over_sections (abfd, | |
12150 | unrecord_section_via_map_over_sections, | |
12151 | NULL); | |
12152 | ||
12153 | return _bfd_free_cached_info (abfd); | |
12154 | } | |
12155 | ||
b7693d02 DJ |
12156 | /* Display STT_ARM_TFUNC symbols as functions. */ |
12157 | ||
12158 | static void | |
12159 | elf32_arm_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, | |
12160 | asymbol *asym) | |
12161 | { | |
12162 | elf_symbol_type *elfsym = (elf_symbol_type *) asym; | |
12163 | ||
12164 | if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_ARM_TFUNC) | |
12165 | elfsym->symbol.flags |= BSF_FUNCTION; | |
12166 | } | |
12167 | ||
0beaef2b PB |
12168 | |
12169 | /* Mangle thumb function symbols as we read them in. */ | |
12170 | ||
8384fb8f | 12171 | static bfd_boolean |
0beaef2b PB |
12172 | elf32_arm_swap_symbol_in (bfd * abfd, |
12173 | const void *psrc, | |
12174 | const void *pshn, | |
12175 | Elf_Internal_Sym *dst) | |
12176 | { | |
8384fb8f AM |
12177 | if (!bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst)) |
12178 | return FALSE; | |
0beaef2b PB |
12179 | |
12180 | /* New EABI objects mark thumb function symbols by setting the low bit of | |
12181 | the address. Turn these into STT_ARM_TFUNC. */ | |
0f88be7a | 12182 | if ((ELF_ST_TYPE (dst->st_info) == STT_FUNC) |
0beaef2b PB |
12183 | && (dst->st_value & 1)) |
12184 | { | |
12185 | dst->st_info = ELF_ST_INFO (ELF_ST_BIND (dst->st_info), STT_ARM_TFUNC); | |
12186 | dst->st_value &= ~(bfd_vma) 1; | |
12187 | } | |
8384fb8f | 12188 | return TRUE; |
0beaef2b PB |
12189 | } |
12190 | ||
12191 | ||
12192 | /* Mangle thumb function symbols as we write them out. */ | |
12193 | ||
12194 | static void | |
12195 | elf32_arm_swap_symbol_out (bfd *abfd, | |
12196 | const Elf_Internal_Sym *src, | |
12197 | void *cdst, | |
12198 | void *shndx) | |
12199 | { | |
12200 | Elf_Internal_Sym newsym; | |
12201 | ||
12202 | /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit | |
12203 | of the address set, as per the new EABI. We do this unconditionally | |
12204 | because objcopy does not set the elf header flags until after | |
12205 | it writes out the symbol table. */ | |
12206 | if (ELF_ST_TYPE (src->st_info) == STT_ARM_TFUNC) | |
12207 | { | |
12208 | newsym = *src; | |
12209 | newsym.st_info = ELF_ST_INFO (ELF_ST_BIND (src->st_info), STT_FUNC); | |
0fa3dcad PB |
12210 | if (newsym.st_shndx != SHN_UNDEF) |
12211 | { | |
12212 | /* Do this only for defined symbols. At link type, the static | |
12213 | linker will simulate the work of dynamic linker of resolving | |
12214 | symbols and will carry over the thumbness of found symbols to | |
12215 | the output symbol table. It's not clear how it happens, but | |
b0fead2b | 12216 | the thumbness of undefined symbols can well be different at |
0fa3dcad PB |
12217 | runtime, and writing '1' for them will be confusing for users |
12218 | and possibly for dynamic linker itself. | |
12219 | */ | |
12220 | newsym.st_value |= 1; | |
12221 | } | |
906e58ca | 12222 | |
0beaef2b PB |
12223 | src = &newsym; |
12224 | } | |
12225 | bfd_elf32_swap_symbol_out (abfd, src, cdst, shndx); | |
12226 | } | |
12227 | ||
b294bdf8 MM |
12228 | /* Add the PT_ARM_EXIDX program header. */ |
12229 | ||
12230 | static bfd_boolean | |
906e58ca | 12231 | elf32_arm_modify_segment_map (bfd *abfd, |
b294bdf8 MM |
12232 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
12233 | { | |
12234 | struct elf_segment_map *m; | |
12235 | asection *sec; | |
12236 | ||
12237 | sec = bfd_get_section_by_name (abfd, ".ARM.exidx"); | |
12238 | if (sec != NULL && (sec->flags & SEC_LOAD) != 0) | |
12239 | { | |
12240 | /* If there is already a PT_ARM_EXIDX header, then we do not | |
12241 | want to add another one. This situation arises when running | |
12242 | "strip"; the input binary already has the header. */ | |
12243 | m = elf_tdata (abfd)->segment_map; | |
12244 | while (m && m->p_type != PT_ARM_EXIDX) | |
12245 | m = m->next; | |
12246 | if (!m) | |
12247 | { | |
12248 | m = bfd_zalloc (abfd, sizeof (struct elf_segment_map)); | |
12249 | if (m == NULL) | |
12250 | return FALSE; | |
12251 | m->p_type = PT_ARM_EXIDX; | |
12252 | m->count = 1; | |
12253 | m->sections[0] = sec; | |
12254 | ||
12255 | m->next = elf_tdata (abfd)->segment_map; | |
12256 | elf_tdata (abfd)->segment_map = m; | |
12257 | } | |
12258 | } | |
12259 | ||
12260 | return TRUE; | |
12261 | } | |
12262 | ||
12263 | /* We may add a PT_ARM_EXIDX program header. */ | |
12264 | ||
12265 | static int | |
a6b96beb AM |
12266 | elf32_arm_additional_program_headers (bfd *abfd, |
12267 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
b294bdf8 MM |
12268 | { |
12269 | asection *sec; | |
12270 | ||
12271 | sec = bfd_get_section_by_name (abfd, ".ARM.exidx"); | |
12272 | if (sec != NULL && (sec->flags & SEC_LOAD) != 0) | |
12273 | return 1; | |
12274 | else | |
12275 | return 0; | |
12276 | } | |
12277 | ||
fcb93ecf | 12278 | /* We have two function types: STT_FUNC and STT_ARM_TFUNC. */ |
906e58ca | 12279 | |
fcb93ecf PB |
12280 | static bfd_boolean |
12281 | elf32_arm_is_function_type (unsigned int type) | |
12282 | { | |
0f88be7a | 12283 | return (type == STT_FUNC) || (type == STT_ARM_TFUNC); |
fcb93ecf PB |
12284 | } |
12285 | ||
0beaef2b | 12286 | /* We use this to override swap_symbol_in and swap_symbol_out. */ |
906e58ca NC |
12287 | const struct elf_size_info elf32_arm_size_info = |
12288 | { | |
0beaef2b PB |
12289 | sizeof (Elf32_External_Ehdr), |
12290 | sizeof (Elf32_External_Phdr), | |
12291 | sizeof (Elf32_External_Shdr), | |
12292 | sizeof (Elf32_External_Rel), | |
12293 | sizeof (Elf32_External_Rela), | |
12294 | sizeof (Elf32_External_Sym), | |
12295 | sizeof (Elf32_External_Dyn), | |
12296 | sizeof (Elf_External_Note), | |
12297 | 4, | |
12298 | 1, | |
12299 | 32, 2, | |
12300 | ELFCLASS32, EV_CURRENT, | |
12301 | bfd_elf32_write_out_phdrs, | |
12302 | bfd_elf32_write_shdrs_and_ehdr, | |
1489a3a0 | 12303 | bfd_elf32_checksum_contents, |
0beaef2b PB |
12304 | bfd_elf32_write_relocs, |
12305 | elf32_arm_swap_symbol_in, | |
12306 | elf32_arm_swap_symbol_out, | |
12307 | bfd_elf32_slurp_reloc_table, | |
12308 | bfd_elf32_slurp_symbol_table, | |
12309 | bfd_elf32_swap_dyn_in, | |
12310 | bfd_elf32_swap_dyn_out, | |
12311 | bfd_elf32_swap_reloc_in, | |
12312 | bfd_elf32_swap_reloc_out, | |
12313 | bfd_elf32_swap_reloca_in, | |
12314 | bfd_elf32_swap_reloca_out | |
12315 | }; | |
12316 | ||
252b5132 RH |
12317 | #define ELF_ARCH bfd_arch_arm |
12318 | #define ELF_MACHINE_CODE EM_ARM | |
d0facd1b NC |
12319 | #ifdef __QNXTARGET__ |
12320 | #define ELF_MAXPAGESIZE 0x1000 | |
12321 | #else | |
f21f3fe0 | 12322 | #define ELF_MAXPAGESIZE 0x8000 |
d0facd1b | 12323 | #endif |
b1342370 | 12324 | #define ELF_MINPAGESIZE 0x1000 |
24718e3b | 12325 | #define ELF_COMMONPAGESIZE 0x1000 |
252b5132 | 12326 | |
ba93b8ac DJ |
12327 | #define bfd_elf32_mkobject elf32_arm_mkobject |
12328 | ||
99e4ae17 AJ |
12329 | #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data |
12330 | #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data | |
252b5132 RH |
12331 | #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags |
12332 | #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data | |
12333 | #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create | |
906e58ca | 12334 | #define bfd_elf32_bfd_link_hash_table_free elf32_arm_hash_table_free |
dc810e39 | 12335 | #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup |
157090f7 | 12336 | #define bfd_elf32_bfd_reloc_name_lookup elf32_arm_reloc_name_lookup |
252b5132 | 12337 | #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line |
4ab527b0 | 12338 | #define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info |
e489d0ae | 12339 | #define bfd_elf32_new_section_hook elf32_arm_new_section_hook |
3c9458e9 | 12340 | #define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol |
957c6e41 | 12341 | #define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup |
b25e3d87 | 12342 | #define bfd_elf32_bfd_free_cached_info elf32_arm_bfd_free_cached_info |
252b5132 RH |
12343 | |
12344 | #define elf_backend_get_symbol_type elf32_arm_get_symbol_type | |
12345 | #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook | |
6a5bb875 | 12346 | #define elf_backend_gc_mark_extra_sections elf32_arm_gc_mark_extra_sections |
252b5132 RH |
12347 | #define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook |
12348 | #define elf_backend_check_relocs elf32_arm_check_relocs | |
dc810e39 | 12349 | #define elf_backend_relocate_section elf32_arm_relocate_section |
e489d0ae | 12350 | #define elf_backend_write_section elf32_arm_write_section |
252b5132 | 12351 | #define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol |
5e681ec4 | 12352 | #define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections |
252b5132 RH |
12353 | #define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol |
12354 | #define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections | |
12355 | #define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections | |
74541ad4 | 12356 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
ba96a88f | 12357 | #define elf_backend_post_process_headers elf32_arm_post_process_headers |
99e4ae17 | 12358 | #define elf_backend_reloc_type_class elf32_arm_reloc_type_class |
c178919b | 12359 | #define elf_backend_object_p elf32_arm_object_p |
e16bb312 | 12360 | #define elf_backend_section_flags elf32_arm_section_flags |
40a18ebd NC |
12361 | #define elf_backend_fake_sections elf32_arm_fake_sections |
12362 | #define elf_backend_section_from_shdr elf32_arm_section_from_shdr | |
e16bb312 | 12363 | #define elf_backend_final_write_processing elf32_arm_final_write_processing |
5e681ec4 | 12364 | #define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol |
b7693d02 | 12365 | #define elf_backend_symbol_processing elf32_arm_symbol_processing |
0beaef2b | 12366 | #define elf_backend_size_info elf32_arm_size_info |
b294bdf8 | 12367 | #define elf_backend_modify_segment_map elf32_arm_modify_segment_map |
906e58ca NC |
12368 | #define elf_backend_additional_program_headers elf32_arm_additional_program_headers |
12369 | #define elf_backend_output_arch_local_syms elf32_arm_output_arch_local_syms | |
12370 | #define elf_backend_begin_write_processing elf32_arm_begin_write_processing | |
12371 | #define elf_backend_is_function_type elf32_arm_is_function_type | |
12372 | ||
12373 | #define elf_backend_can_refcount 1 | |
12374 | #define elf_backend_can_gc_sections 1 | |
12375 | #define elf_backend_plt_readonly 1 | |
12376 | #define elf_backend_want_got_plt 1 | |
12377 | #define elf_backend_want_plt_sym 0 | |
12378 | #define elf_backend_may_use_rel_p 1 | |
12379 | #define elf_backend_may_use_rela_p 0 | |
4e7fd91e | 12380 | #define elf_backend_default_use_rela_p 0 |
252b5132 | 12381 | |
04f7c78d | 12382 | #define elf_backend_got_header_size 12 |
04f7c78d | 12383 | |
906e58ca NC |
12384 | #undef elf_backend_obj_attrs_vendor |
12385 | #define elf_backend_obj_attrs_vendor "aeabi" | |
12386 | #undef elf_backend_obj_attrs_section | |
12387 | #define elf_backend_obj_attrs_section ".ARM.attributes" | |
12388 | #undef elf_backend_obj_attrs_arg_type | |
12389 | #define elf_backend_obj_attrs_arg_type elf32_arm_obj_attrs_arg_type | |
12390 | #undef elf_backend_obj_attrs_section_type | |
104d59d1 | 12391 | #define elf_backend_obj_attrs_section_type SHT_ARM_ATTRIBUTES |
5aa6ff7c | 12392 | #define elf_backend_obj_attrs_order elf32_arm_obj_attrs_order |
104d59d1 | 12393 | |
252b5132 | 12394 | #include "elf32-target.h" |
7f266840 | 12395 | |
906e58ca | 12396 | /* VxWorks Targets. */ |
4e7fd91e | 12397 | |
906e58ca | 12398 | #undef TARGET_LITTLE_SYM |
4e7fd91e | 12399 | #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec |
906e58ca | 12400 | #undef TARGET_LITTLE_NAME |
4e7fd91e | 12401 | #define TARGET_LITTLE_NAME "elf32-littlearm-vxworks" |
906e58ca | 12402 | #undef TARGET_BIG_SYM |
4e7fd91e | 12403 | #define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec |
906e58ca | 12404 | #undef TARGET_BIG_NAME |
4e7fd91e PB |
12405 | #define TARGET_BIG_NAME "elf32-bigarm-vxworks" |
12406 | ||
12407 | /* Like elf32_arm_link_hash_table_create -- but overrides | |
12408 | appropriately for VxWorks. */ | |
906e58ca | 12409 | |
4e7fd91e PB |
12410 | static struct bfd_link_hash_table * |
12411 | elf32_arm_vxworks_link_hash_table_create (bfd *abfd) | |
12412 | { | |
12413 | struct bfd_link_hash_table *ret; | |
12414 | ||
12415 | ret = elf32_arm_link_hash_table_create (abfd); | |
12416 | if (ret) | |
12417 | { | |
12418 | struct elf32_arm_link_hash_table *htab | |
00a97672 | 12419 | = (struct elf32_arm_link_hash_table *) ret; |
4e7fd91e | 12420 | htab->use_rel = 0; |
00a97672 | 12421 | htab->vxworks_p = 1; |
4e7fd91e PB |
12422 | } |
12423 | return ret; | |
906e58ca | 12424 | } |
4e7fd91e | 12425 | |
00a97672 RS |
12426 | static void |
12427 | elf32_arm_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker) | |
12428 | { | |
12429 | elf32_arm_final_write_processing (abfd, linker); | |
12430 | elf_vxworks_final_write_processing (abfd, linker); | |
12431 | } | |
12432 | ||
906e58ca | 12433 | #undef elf32_bed |
4e7fd91e PB |
12434 | #define elf32_bed elf32_arm_vxworks_bed |
12435 | ||
906e58ca NC |
12436 | #undef bfd_elf32_bfd_link_hash_table_create |
12437 | #define bfd_elf32_bfd_link_hash_table_create elf32_arm_vxworks_link_hash_table_create | |
12438 | #undef elf_backend_add_symbol_hook | |
12439 | #define elf_backend_add_symbol_hook elf_vxworks_add_symbol_hook | |
12440 | #undef elf_backend_final_write_processing | |
12441 | #define elf_backend_final_write_processing elf32_arm_vxworks_final_write_processing | |
12442 | #undef elf_backend_emit_relocs | |
12443 | #define elf_backend_emit_relocs elf_vxworks_emit_relocs | |
4e7fd91e | 12444 | |
906e58ca | 12445 | #undef elf_backend_may_use_rel_p |
00a97672 | 12446 | #define elf_backend_may_use_rel_p 0 |
906e58ca | 12447 | #undef elf_backend_may_use_rela_p |
00a97672 | 12448 | #define elf_backend_may_use_rela_p 1 |
906e58ca | 12449 | #undef elf_backend_default_use_rela_p |
00a97672 | 12450 | #define elf_backend_default_use_rela_p 1 |
906e58ca | 12451 | #undef elf_backend_want_plt_sym |
00a97672 | 12452 | #define elf_backend_want_plt_sym 1 |
906e58ca | 12453 | #undef ELF_MAXPAGESIZE |
00a97672 | 12454 | #define ELF_MAXPAGESIZE 0x1000 |
4e7fd91e PB |
12455 | |
12456 | #include "elf32-target.h" | |
12457 | ||
12458 | ||
906e58ca | 12459 | /* Symbian OS Targets. */ |
7f266840 | 12460 | |
906e58ca | 12461 | #undef TARGET_LITTLE_SYM |
7f266840 | 12462 | #define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec |
906e58ca | 12463 | #undef TARGET_LITTLE_NAME |
7f266840 | 12464 | #define TARGET_LITTLE_NAME "elf32-littlearm-symbian" |
906e58ca | 12465 | #undef TARGET_BIG_SYM |
7f266840 | 12466 | #define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec |
906e58ca | 12467 | #undef TARGET_BIG_NAME |
7f266840 DJ |
12468 | #define TARGET_BIG_NAME "elf32-bigarm-symbian" |
12469 | ||
12470 | /* Like elf32_arm_link_hash_table_create -- but overrides | |
12471 | appropriately for Symbian OS. */ | |
906e58ca | 12472 | |
7f266840 DJ |
12473 | static struct bfd_link_hash_table * |
12474 | elf32_arm_symbian_link_hash_table_create (bfd *abfd) | |
12475 | { | |
12476 | struct bfd_link_hash_table *ret; | |
12477 | ||
12478 | ret = elf32_arm_link_hash_table_create (abfd); | |
12479 | if (ret) | |
12480 | { | |
12481 | struct elf32_arm_link_hash_table *htab | |
12482 | = (struct elf32_arm_link_hash_table *)ret; | |
12483 | /* There is no PLT header for Symbian OS. */ | |
12484 | htab->plt_header_size = 0; | |
95720a86 DJ |
12485 | /* The PLT entries are each one instruction and one word. */ |
12486 | htab->plt_entry_size = 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry); | |
7f266840 | 12487 | htab->symbian_p = 1; |
33bfe774 JB |
12488 | /* Symbian uses armv5t or above, so use_blx is always true. */ |
12489 | htab->use_blx = 1; | |
67687978 | 12490 | htab->root.is_relocatable_executable = 1; |
7f266840 DJ |
12491 | } |
12492 | return ret; | |
906e58ca | 12493 | } |
7f266840 | 12494 | |
b35d266b | 12495 | static const struct bfd_elf_special_section |
551b43fd | 12496 | elf32_arm_symbian_special_sections[] = |
7f266840 | 12497 | { |
5cd3778d MM |
12498 | /* In a BPABI executable, the dynamic linking sections do not go in |
12499 | the loadable read-only segment. The post-linker may wish to | |
12500 | refer to these sections, but they are not part of the final | |
12501 | program image. */ | |
0112cd26 NC |
12502 | { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, 0 }, |
12503 | { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, 0 }, | |
12504 | { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, 0 }, | |
12505 | { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, 0 }, | |
12506 | { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, 0 }, | |
5cd3778d MM |
12507 | /* These sections do not need to be writable as the SymbianOS |
12508 | postlinker will arrange things so that no dynamic relocation is | |
12509 | required. */ | |
0112cd26 NC |
12510 | { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC }, |
12511 | { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC }, | |
12512 | { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC }, | |
12513 | { NULL, 0, 0, 0, 0 } | |
7f266840 DJ |
12514 | }; |
12515 | ||
c3c76620 | 12516 | static void |
906e58ca | 12517 | elf32_arm_symbian_begin_write_processing (bfd *abfd, |
a4fd1a8e | 12518 | struct bfd_link_info *link_info) |
c3c76620 MM |
12519 | { |
12520 | /* BPABI objects are never loaded directly by an OS kernel; they are | |
12521 | processed by a postlinker first, into an OS-specific format. If | |
12522 | the D_PAGED bit is set on the file, BFD will align segments on | |
12523 | page boundaries, so that an OS can directly map the file. With | |
12524 | BPABI objects, that just results in wasted space. In addition, | |
12525 | because we clear the D_PAGED bit, map_sections_to_segments will | |
12526 | recognize that the program headers should not be mapped into any | |
12527 | loadable segment. */ | |
12528 | abfd->flags &= ~D_PAGED; | |
906e58ca | 12529 | elf32_arm_begin_write_processing (abfd, link_info); |
c3c76620 | 12530 | } |
7f266840 DJ |
12531 | |
12532 | static bfd_boolean | |
906e58ca | 12533 | elf32_arm_symbian_modify_segment_map (bfd *abfd, |
b294bdf8 | 12534 | struct bfd_link_info *info) |
7f266840 DJ |
12535 | { |
12536 | struct elf_segment_map *m; | |
12537 | asection *dynsec; | |
12538 | ||
7f266840 DJ |
12539 | /* BPABI shared libraries and executables should have a PT_DYNAMIC |
12540 | segment. However, because the .dynamic section is not marked | |
12541 | with SEC_LOAD, the generic ELF code will not create such a | |
12542 | segment. */ | |
12543 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); | |
12544 | if (dynsec) | |
12545 | { | |
8ded5a0f AM |
12546 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
12547 | if (m->p_type == PT_DYNAMIC) | |
12548 | break; | |
12549 | ||
12550 | if (m == NULL) | |
12551 | { | |
12552 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); | |
12553 | m->next = elf_tdata (abfd)->segment_map; | |
12554 | elf_tdata (abfd)->segment_map = m; | |
12555 | } | |
7f266840 DJ |
12556 | } |
12557 | ||
b294bdf8 MM |
12558 | /* Also call the generic arm routine. */ |
12559 | return elf32_arm_modify_segment_map (abfd, info); | |
7f266840 DJ |
12560 | } |
12561 | ||
95720a86 DJ |
12562 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
12563 | or (bfd_vma) -1 if it should not be included. */ | |
12564 | ||
12565 | static bfd_vma | |
12566 | elf32_arm_symbian_plt_sym_val (bfd_vma i, const asection *plt, | |
12567 | const arelent *rel ATTRIBUTE_UNUSED) | |
12568 | { | |
12569 | return plt->vma + 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry) * i; | |
12570 | } | |
12571 | ||
12572 | ||
8029a119 | 12573 | #undef elf32_bed |
7f266840 DJ |
12574 | #define elf32_bed elf32_arm_symbian_bed |
12575 | ||
12576 | /* The dynamic sections are not allocated on SymbianOS; the postlinker | |
12577 | will process them and then discard them. */ | |
906e58ca | 12578 | #undef ELF_DYNAMIC_SEC_FLAGS |
7f266840 DJ |
12579 | #define ELF_DYNAMIC_SEC_FLAGS \ |
12580 | (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED) | |
12581 | ||
00a97672 | 12582 | #undef elf_backend_add_symbol_hook |
00a97672 | 12583 | #undef elf_backend_emit_relocs |
c3c76620 | 12584 | |
906e58ca NC |
12585 | #undef bfd_elf32_bfd_link_hash_table_create |
12586 | #define bfd_elf32_bfd_link_hash_table_create elf32_arm_symbian_link_hash_table_create | |
12587 | #undef elf_backend_special_sections | |
12588 | #define elf_backend_special_sections elf32_arm_symbian_special_sections | |
12589 | #undef elf_backend_begin_write_processing | |
12590 | #define elf_backend_begin_write_processing elf32_arm_symbian_begin_write_processing | |
12591 | #undef elf_backend_final_write_processing | |
12592 | #define elf_backend_final_write_processing elf32_arm_final_write_processing | |
12593 | ||
12594 | #undef elf_backend_modify_segment_map | |
7f266840 DJ |
12595 | #define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map |
12596 | ||
12597 | /* There is no .got section for BPABI objects, and hence no header. */ | |
906e58ca | 12598 | #undef elf_backend_got_header_size |
7f266840 DJ |
12599 | #define elf_backend_got_header_size 0 |
12600 | ||
12601 | /* Similarly, there is no .got.plt section. */ | |
906e58ca | 12602 | #undef elf_backend_want_got_plt |
7f266840 DJ |
12603 | #define elf_backend_want_got_plt 0 |
12604 | ||
906e58ca | 12605 | #undef elf_backend_plt_sym_val |
95720a86 DJ |
12606 | #define elf_backend_plt_sym_val elf32_arm_symbian_plt_sym_val |
12607 | ||
906e58ca | 12608 | #undef elf_backend_may_use_rel_p |
00a97672 | 12609 | #define elf_backend_may_use_rel_p 1 |
906e58ca | 12610 | #undef elf_backend_may_use_rela_p |
00a97672 | 12611 | #define elf_backend_may_use_rela_p 0 |
906e58ca | 12612 | #undef elf_backend_default_use_rela_p |
00a97672 | 12613 | #define elf_backend_default_use_rela_p 0 |
906e58ca | 12614 | #undef elf_backend_want_plt_sym |
00a97672 | 12615 | #define elf_backend_want_plt_sym 0 |
906e58ca | 12616 | #undef ELF_MAXPAGESIZE |
00a97672 | 12617 | #define ELF_MAXPAGESIZE 0x8000 |
4e7fd91e | 12618 | |
7f266840 | 12619 | #include "elf32-target.h" |