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 | ||
461a49ca DJ |
2021 | #define THUMB16_INSN(X) {(X), THUMB16_TYPE, R_ARM_NONE, 0} |
2022 | #define THUMB32_INSN(X) {(X), THUMB32_TYPE, R_ARM_NONE, 0} | |
2023 | #define ARM_INSN(X) {(X), ARM_TYPE, R_ARM_NONE, 0} | |
2024 | #define ARM_REL_INSN(X, Z) {(X), ARM_TYPE, R_ARM_JUMP24, (Z)} | |
2025 | #define DATA_WORD(X,Y,Z) {(X), DATA_TYPE, (Y), (Z)} | |
2026 | ||
2027 | typedef struct | |
2028 | { | |
2029 | bfd_vma data; | |
2030 | enum stub_insn_type type; | |
ebe24dd4 | 2031 | unsigned int r_type; |
461a49ca DJ |
2032 | int reloc_addend; |
2033 | } insn_sequence; | |
2034 | ||
fea2b4d6 CL |
2035 | /* Arm/Thumb -> Arm/Thumb long branch stub. On V5T and above, use blx |
2036 | to reach the stub if necessary. */ | |
461a49ca | 2037 | static const insn_sequence elf32_arm_stub_long_branch_any_any[] = |
906e58ca | 2038 | { |
461a49ca DJ |
2039 | ARM_INSN(0xe51ff004), /* ldr pc, [pc, #-4] */ |
2040 | DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */ | |
906e58ca NC |
2041 | }; |
2042 | ||
fea2b4d6 CL |
2043 | /* V4T Arm -> Thumb long branch stub. Used on V4T where blx is not |
2044 | available. */ | |
461a49ca | 2045 | static const insn_sequence elf32_arm_stub_long_branch_v4t_arm_thumb[] = |
906e58ca | 2046 | { |
461a49ca DJ |
2047 | ARM_INSN(0xe59fc000), /* ldr ip, [pc, #0] */ |
2048 | ARM_INSN(0xe12fff1c), /* bx ip */ | |
2049 | DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */ | |
906e58ca NC |
2050 | }; |
2051 | ||
fea2b4d6 CL |
2052 | /* Thumb -> Thumb long branch stub. Used on architectures which |
2053 | support only this mode, or on V4T where it is expensive to switch | |
2054 | to ARM. */ | |
461a49ca | 2055 | static const insn_sequence elf32_arm_stub_long_branch_thumb_only[] = |
906e58ca | 2056 | { |
461a49ca DJ |
2057 | THUMB16_INSN(0xb401), /* push {r0} */ |
2058 | THUMB16_INSN(0x4802), /* ldr r0, [pc, #8] */ | |
2059 | THUMB16_INSN(0x4684), /* mov ip, r0 */ | |
2060 | THUMB16_INSN(0xbc01), /* pop {r0} */ | |
2061 | THUMB16_INSN(0x4760), /* bx ip */ | |
2062 | THUMB16_INSN(0xbf00), /* nop */ | |
2063 | DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */ | |
906e58ca NC |
2064 | }; |
2065 | ||
fea2b4d6 CL |
2066 | /* V4T Thumb -> ARM long branch stub. Used on V4T where blx is not |
2067 | available. */ | |
461a49ca | 2068 | static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_arm[] = |
906e58ca | 2069 | { |
461a49ca DJ |
2070 | THUMB16_INSN(0x4778), /* bx pc */ |
2071 | THUMB16_INSN(0x46c0), /* nop */ | |
2072 | ARM_INSN(0xe51ff004), /* ldr pc, [pc, #-4] */ | |
2073 | DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */ | |
906e58ca NC |
2074 | }; |
2075 | ||
fea2b4d6 CL |
2076 | /* V4T Thumb -> ARM short branch stub. Shorter variant of the above |
2077 | one, when the destination is close enough. */ | |
461a49ca | 2078 | static const insn_sequence elf32_arm_stub_short_branch_v4t_thumb_arm[] = |
c820be07 | 2079 | { |
461a49ca DJ |
2080 | THUMB16_INSN(0x4778), /* bx pc */ |
2081 | THUMB16_INSN(0x46c0), /* nop */ | |
2082 | ARM_REL_INSN(0xea000000, -8), /* b (X-8) */ | |
c820be07 NC |
2083 | }; |
2084 | ||
cf3eccff | 2085 | /* ARM/Thumb -> ARM long branch stub, PIC. On V5T and above, use |
fea2b4d6 | 2086 | blx to reach the stub if necessary. */ |
cf3eccff | 2087 | static const insn_sequence elf32_arm_stub_long_branch_any_arm_pic[] = |
906e58ca | 2088 | { |
461a49ca DJ |
2089 | ARM_INSN(0xe59fc000), /* ldr r12, [pc] */ |
2090 | ARM_INSN(0xe08ff00c), /* add pc, pc, ip */ | |
2091 | DATA_WORD(0, R_ARM_REL32, -4), /* dcd R_ARM_REL32(X-4) */ | |
906e58ca NC |
2092 | }; |
2093 | ||
cf3eccff DJ |
2094 | /* ARM/Thumb -> Thumb long branch stub, PIC. On V5T and above, use |
2095 | blx to reach the stub if necessary. We can not add into pc; | |
2096 | it is not guaranteed to mode switch (different in ARMv6 and | |
2097 | ARMv7). */ | |
2098 | static const insn_sequence elf32_arm_stub_long_branch_any_thumb_pic[] = | |
2099 | { | |
2100 | ARM_INSN(0xe59fc004), /* ldr r12, [pc, #4] */ | |
2101 | ARM_INSN(0xe08fc00c), /* add ip, pc, ip */ | |
2102 | ARM_INSN(0xe12fff1c), /* bx ip */ | |
2103 | DATA_WORD(0, R_ARM_REL32, 0), /* dcd R_ARM_REL32(X) */ | |
2104 | }; | |
2105 | ||
ebe24dd4 CL |
2106 | /* V4T ARM -> ARM long branch stub, PIC. */ |
2107 | static const insn_sequence elf32_arm_stub_long_branch_v4t_arm_thumb_pic[] = | |
2108 | { | |
2109 | ARM_INSN(0xe59fc004), /* ldr ip, [pc, #4] */ | |
2110 | ARM_INSN(0xe08fc00c), /* add ip, pc, ip */ | |
2111 | ARM_INSN(0xe12fff1c), /* bx ip */ | |
2112 | DATA_WORD(0, R_ARM_REL32, 0), /* dcd R_ARM_REL32(X) */ | |
2113 | }; | |
2114 | ||
2115 | /* V4T Thumb -> ARM long branch stub, PIC. */ | |
2116 | static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_arm_pic[] = | |
2117 | { | |
2118 | THUMB16_INSN(0x4778), /* bx pc */ | |
2119 | THUMB16_INSN(0x46c0), /* nop */ | |
2120 | ARM_INSN(0xe59fc000), /* ldr ip, [pc, #0] */ | |
2121 | ARM_INSN(0xe08cf00f), /* add pc, ip, pc */ | |
2122 | DATA_WORD(0, R_ARM_REL32, -4), /* dcd R_ARM_REL32(X) */ | |
2123 | }; | |
2124 | ||
2125 | /* Thumb -> Thumb long branch stub, PIC. Used on architectures which | |
2126 | support only this mode, or on V4T where it is expensive to switch | |
2127 | to ARM. */ | |
2128 | static const insn_sequence elf32_arm_stub_long_branch_thumb_only_pic[] = | |
2129 | { | |
2130 | THUMB16_INSN(0xb401), /* push {r0} */ | |
2131 | THUMB16_INSN(0x4802), /* ldr r0, [pc, #8] */ | |
2132 | THUMB16_INSN(0x46fc), /* mov ip, pc */ | |
2133 | THUMB16_INSN(0x4484), /* add ip, r0 */ | |
2134 | THUMB16_INSN(0xbc01), /* pop {r0} */ | |
2135 | THUMB16_INSN(0x4760), /* bx ip */ | |
2136 | DATA_WORD(0, R_ARM_REL32, 4), /* dcd R_ARM_REL32(X) */ | |
2137 | }; | |
2138 | ||
906e58ca NC |
2139 | /* Section name for stubs is the associated section name plus this |
2140 | string. */ | |
2141 | #define STUB_SUFFIX ".stub" | |
2142 | ||
2143 | enum elf32_arm_stub_type | |
2144 | { | |
2145 | arm_stub_none, | |
fea2b4d6 CL |
2146 | arm_stub_long_branch_any_any, |
2147 | arm_stub_long_branch_v4t_arm_thumb, | |
2148 | arm_stub_long_branch_thumb_only, | |
2149 | arm_stub_long_branch_v4t_thumb_arm, | |
2150 | arm_stub_short_branch_v4t_thumb_arm, | |
cf3eccff DJ |
2151 | arm_stub_long_branch_any_arm_pic, |
2152 | arm_stub_long_branch_any_thumb_pic, | |
ebe24dd4 CL |
2153 | arm_stub_long_branch_v4t_arm_thumb_pic, |
2154 | arm_stub_long_branch_v4t_thumb_arm_pic, | |
2155 | arm_stub_long_branch_thumb_only_pic, | |
906e58ca NC |
2156 | }; |
2157 | ||
2158 | struct elf32_arm_stub_hash_entry | |
2159 | { | |
2160 | /* Base hash table entry structure. */ | |
2161 | struct bfd_hash_entry root; | |
2162 | ||
2163 | /* The stub section. */ | |
2164 | asection *stub_sec; | |
2165 | ||
2166 | /* Offset within stub_sec of the beginning of this stub. */ | |
2167 | bfd_vma stub_offset; | |
2168 | ||
2169 | /* Given the symbol's value and its section we can determine its final | |
2170 | value when building the stubs (so the stub knows where to jump). */ | |
2171 | bfd_vma target_value; | |
2172 | asection *target_section; | |
2173 | ||
461a49ca | 2174 | /* The stub type. */ |
906e58ca | 2175 | enum elf32_arm_stub_type stub_type; |
461a49ca DJ |
2176 | /* Its encoding size in bytes. */ |
2177 | int stub_size; | |
2178 | /* Its template. */ | |
2179 | const insn_sequence *stub_template; | |
2180 | /* The size of the template (number of entries). */ | |
2181 | int stub_template_size; | |
906e58ca NC |
2182 | |
2183 | /* The symbol table entry, if any, that this was derived from. */ | |
2184 | struct elf32_arm_link_hash_entry *h; | |
2185 | ||
2186 | /* Destination symbol type (STT_ARM_TFUNC, ...) */ | |
2187 | unsigned char st_type; | |
2188 | ||
2189 | /* Where this stub is being called from, or, in the case of combined | |
2190 | stub sections, the first input section in the group. */ | |
2191 | asection *id_sec; | |
7413f23f DJ |
2192 | |
2193 | /* The name for the local symbol at the start of this stub. The | |
2194 | stub name in the hash table has to be unique; this does not, so | |
2195 | it can be friendlier. */ | |
2196 | char *output_name; | |
906e58ca NC |
2197 | }; |
2198 | ||
e489d0ae PB |
2199 | /* Used to build a map of a section. This is required for mixed-endian |
2200 | code/data. */ | |
2201 | ||
2202 | typedef struct elf32_elf_section_map | |
2203 | { | |
2204 | bfd_vma vma; | |
2205 | char type; | |
2206 | } | |
2207 | elf32_arm_section_map; | |
2208 | ||
c7b8f16e JB |
2209 | /* Information about a VFP11 erratum veneer, or a branch to such a veneer. */ |
2210 | ||
2211 | typedef enum | |
2212 | { | |
2213 | VFP11_ERRATUM_BRANCH_TO_ARM_VENEER, | |
2214 | VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER, | |
2215 | VFP11_ERRATUM_ARM_VENEER, | |
2216 | VFP11_ERRATUM_THUMB_VENEER | |
2217 | } | |
2218 | elf32_vfp11_erratum_type; | |
2219 | ||
2220 | typedef struct elf32_vfp11_erratum_list | |
2221 | { | |
2222 | struct elf32_vfp11_erratum_list *next; | |
2223 | bfd_vma vma; | |
2224 | union | |
2225 | { | |
2226 | struct | |
2227 | { | |
2228 | struct elf32_vfp11_erratum_list *veneer; | |
2229 | unsigned int vfp_insn; | |
2230 | } b; | |
2231 | struct | |
2232 | { | |
2233 | struct elf32_vfp11_erratum_list *branch; | |
2234 | unsigned int id; | |
2235 | } v; | |
2236 | } u; | |
2237 | elf32_vfp11_erratum_type type; | |
2238 | } | |
2239 | elf32_vfp11_erratum_list; | |
2240 | ||
8e3de13a | 2241 | typedef struct _arm_elf_section_data |
e489d0ae PB |
2242 | { |
2243 | struct bfd_elf_section_data elf; | |
8e3de13a | 2244 | unsigned int mapcount; |
c7b8f16e | 2245 | unsigned int mapsize; |
e489d0ae | 2246 | elf32_arm_section_map *map; |
c7b8f16e JB |
2247 | unsigned int erratumcount; |
2248 | elf32_vfp11_erratum_list *erratumlist; | |
8e3de13a NC |
2249 | } |
2250 | _arm_elf_section_data; | |
e489d0ae PB |
2251 | |
2252 | #define elf32_arm_section_data(sec) \ | |
8e3de13a | 2253 | ((_arm_elf_section_data *) elf_section_data (sec)) |
e489d0ae | 2254 | |
ba93b8ac DJ |
2255 | /* The size of the thread control block. */ |
2256 | #define TCB_SIZE 8 | |
2257 | ||
0ffa91dd | 2258 | struct elf_arm_obj_tdata |
ba93b8ac DJ |
2259 | { |
2260 | struct elf_obj_tdata root; | |
2261 | ||
2262 | /* tls_type for each local got entry. */ | |
2263 | char *local_got_tls_type; | |
ee065d83 | 2264 | |
bf21ed78 MS |
2265 | /* Zero to warn when linking objects with incompatible enum sizes. */ |
2266 | int no_enum_size_warning; | |
a9dc9481 JM |
2267 | |
2268 | /* Zero to warn when linking objects with incompatible wchar_t sizes. */ | |
2269 | int no_wchar_size_warning; | |
ba93b8ac DJ |
2270 | }; |
2271 | ||
0ffa91dd NC |
2272 | #define elf_arm_tdata(bfd) \ |
2273 | ((struct elf_arm_obj_tdata *) (bfd)->tdata.any) | |
ba93b8ac | 2274 | |
0ffa91dd NC |
2275 | #define elf32_arm_local_got_tls_type(bfd) \ |
2276 | (elf_arm_tdata (bfd)->local_got_tls_type) | |
2277 | ||
2278 | #define is_arm_elf(bfd) \ | |
2279 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
2280 | && elf_tdata (bfd) != NULL \ | |
2281 | && elf_object_id (bfd) == ARM_ELF_TDATA) | |
ba93b8ac DJ |
2282 | |
2283 | static bfd_boolean | |
2284 | elf32_arm_mkobject (bfd *abfd) | |
2285 | { | |
0ffa91dd NC |
2286 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_arm_obj_tdata), |
2287 | ARM_ELF_TDATA); | |
ba93b8ac DJ |
2288 | } |
2289 | ||
252b5132 RH |
2290 | /* The ARM linker needs to keep track of the number of relocs that it |
2291 | decides to copy in check_relocs for each symbol. This is so that | |
2292 | it can discard PC relative relocs if it doesn't need them when | |
2293 | linking with -Bsymbolic. We store the information in a field | |
2294 | extending the regular ELF linker hash table. */ | |
2295 | ||
ba93b8ac DJ |
2296 | /* This structure keeps track of the number of relocs we have copied |
2297 | for a given symbol. */ | |
5e681ec4 | 2298 | struct elf32_arm_relocs_copied |
917583ad NC |
2299 | { |
2300 | /* Next section. */ | |
5e681ec4 | 2301 | struct elf32_arm_relocs_copied * next; |
917583ad NC |
2302 | /* A section in dynobj. */ |
2303 | asection * section; | |
2304 | /* Number of relocs copied in this section. */ | |
2305 | bfd_size_type count; | |
ba93b8ac DJ |
2306 | /* Number of PC-relative relocs copied in this section. */ |
2307 | bfd_size_type pc_count; | |
917583ad | 2308 | }; |
252b5132 | 2309 | |
ba93b8ac DJ |
2310 | #define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent)) |
2311 | ||
ba96a88f | 2312 | /* Arm ELF linker hash entry. */ |
252b5132 | 2313 | struct elf32_arm_link_hash_entry |
917583ad NC |
2314 | { |
2315 | struct elf_link_hash_entry root; | |
252b5132 | 2316 | |
917583ad | 2317 | /* Number of PC relative relocs copied for this symbol. */ |
5e681ec4 | 2318 | struct elf32_arm_relocs_copied * relocs_copied; |
b7693d02 DJ |
2319 | |
2320 | /* We reference count Thumb references to a PLT entry separately, | |
2321 | so that we can emit the Thumb trampoline only if needed. */ | |
2322 | bfd_signed_vma plt_thumb_refcount; | |
2323 | ||
bd97cb95 DJ |
2324 | /* Some references from Thumb code may be eliminated by BL->BLX |
2325 | conversion, so record them separately. */ | |
2326 | bfd_signed_vma plt_maybe_thumb_refcount; | |
2327 | ||
b7693d02 DJ |
2328 | /* Since PLT entries have variable size if the Thumb prologue is |
2329 | used, we need to record the index into .got.plt instead of | |
2330 | recomputing it from the PLT offset. */ | |
2331 | bfd_signed_vma plt_got_offset; | |
ba93b8ac DJ |
2332 | |
2333 | #define GOT_UNKNOWN 0 | |
2334 | #define GOT_NORMAL 1 | |
2335 | #define GOT_TLS_GD 2 | |
2336 | #define GOT_TLS_IE 4 | |
2337 | unsigned char tls_type; | |
a4fd1a8e PB |
2338 | |
2339 | /* The symbol marking the real symbol location for exported thumb | |
2340 | symbols with Arm stubs. */ | |
2341 | struct elf_link_hash_entry *export_glue; | |
906e58ca | 2342 | |
da5938a2 | 2343 | /* A pointer to the most recently used stub hash entry against this |
8029a119 | 2344 | symbol. */ |
da5938a2 | 2345 | struct elf32_arm_stub_hash_entry *stub_cache; |
917583ad | 2346 | }; |
252b5132 | 2347 | |
252b5132 | 2348 | /* Traverse an arm ELF linker hash table. */ |
252b5132 RH |
2349 | #define elf32_arm_link_hash_traverse(table, func, info) \ |
2350 | (elf_link_hash_traverse \ | |
2351 | (&(table)->root, \ | |
b7693d02 | 2352 | (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
252b5132 RH |
2353 | (info))) |
2354 | ||
2355 | /* Get the ARM elf linker hash table from a link_info structure. */ | |
2356 | #define elf32_arm_hash_table(info) \ | |
2357 | ((struct elf32_arm_link_hash_table *) ((info)->hash)) | |
2358 | ||
906e58ca NC |
2359 | #define arm_stub_hash_lookup(table, string, create, copy) \ |
2360 | ((struct elf32_arm_stub_hash_entry *) \ | |
2361 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
2362 | ||
9b485d32 | 2363 | /* ARM ELF linker hash table. */ |
252b5132 | 2364 | struct elf32_arm_link_hash_table |
906e58ca NC |
2365 | { |
2366 | /* The main hash table. */ | |
2367 | struct elf_link_hash_table root; | |
252b5132 | 2368 | |
906e58ca NC |
2369 | /* The size in bytes of the section containing the Thumb-to-ARM glue. */ |
2370 | bfd_size_type thumb_glue_size; | |
252b5132 | 2371 | |
906e58ca NC |
2372 | /* The size in bytes of the section containing the ARM-to-Thumb glue. */ |
2373 | bfd_size_type arm_glue_size; | |
252b5132 | 2374 | |
906e58ca NC |
2375 | /* The size in bytes of section containing the ARMv4 BX veneers. */ |
2376 | bfd_size_type bx_glue_size; | |
845b51d6 | 2377 | |
906e58ca NC |
2378 | /* Offsets of ARMv4 BX veneers. Bit1 set if present, and Bit0 set when |
2379 | veneer has been populated. */ | |
2380 | bfd_vma bx_glue_offset[15]; | |
845b51d6 | 2381 | |
906e58ca NC |
2382 | /* The size in bytes of the section containing glue for VFP11 erratum |
2383 | veneers. */ | |
2384 | bfd_size_type vfp11_erratum_glue_size; | |
c7b8f16e | 2385 | |
906e58ca NC |
2386 | /* An arbitrary input BFD chosen to hold the glue sections. */ |
2387 | bfd * bfd_of_glue_owner; | |
ba96a88f | 2388 | |
906e58ca NC |
2389 | /* Nonzero to output a BE8 image. */ |
2390 | int byteswap_code; | |
e489d0ae | 2391 | |
906e58ca NC |
2392 | /* Zero if R_ARM_TARGET1 means R_ARM_ABS32. |
2393 | Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */ | |
2394 | int target1_is_rel; | |
9c504268 | 2395 | |
906e58ca NC |
2396 | /* The relocation to use for R_ARM_TARGET2 relocations. */ |
2397 | int target2_reloc; | |
eb043451 | 2398 | |
906e58ca NC |
2399 | /* 0 = Ignore R_ARM_V4BX. |
2400 | 1 = Convert BX to MOV PC. | |
2401 | 2 = Generate v4 interworing stubs. */ | |
2402 | int fix_v4bx; | |
319850b4 | 2403 | |
906e58ca NC |
2404 | /* Nonzero if the ARM/Thumb BLX instructions are available for use. */ |
2405 | int use_blx; | |
33bfe774 | 2406 | |
906e58ca NC |
2407 | /* What sort of code sequences we should look for which may trigger the |
2408 | VFP11 denorm erratum. */ | |
2409 | bfd_arm_vfp11_fix vfp11_fix; | |
c7b8f16e | 2410 | |
906e58ca NC |
2411 | /* Global counter for the number of fixes we have emitted. */ |
2412 | int num_vfp11_fixes; | |
c7b8f16e | 2413 | |
906e58ca NC |
2414 | /* Nonzero to force PIC branch veneers. */ |
2415 | int pic_veneer; | |
27e55c4d | 2416 | |
906e58ca NC |
2417 | /* The number of bytes in the initial entry in the PLT. */ |
2418 | bfd_size_type plt_header_size; | |
e5a52504 | 2419 | |
906e58ca NC |
2420 | /* The number of bytes in the subsequent PLT etries. */ |
2421 | bfd_size_type plt_entry_size; | |
e5a52504 | 2422 | |
906e58ca NC |
2423 | /* True if the target system is VxWorks. */ |
2424 | int vxworks_p; | |
00a97672 | 2425 | |
906e58ca NC |
2426 | /* True if the target system is Symbian OS. */ |
2427 | int symbian_p; | |
e5a52504 | 2428 | |
906e58ca NC |
2429 | /* True if the target uses REL relocations. */ |
2430 | int use_rel; | |
4e7fd91e | 2431 | |
906e58ca NC |
2432 | /* Short-cuts to get to dynamic linker sections. */ |
2433 | asection *sgot; | |
2434 | asection *sgotplt; | |
2435 | asection *srelgot; | |
2436 | asection *splt; | |
2437 | asection *srelplt; | |
2438 | asection *sdynbss; | |
2439 | asection *srelbss; | |
5e681ec4 | 2440 | |
906e58ca NC |
2441 | /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */ |
2442 | asection *srelplt2; | |
00a97672 | 2443 | |
906e58ca NC |
2444 | /* Data for R_ARM_TLS_LDM32 relocations. */ |
2445 | union | |
2446 | { | |
2447 | bfd_signed_vma refcount; | |
2448 | bfd_vma offset; | |
2449 | } tls_ldm_got; | |
b7693d02 | 2450 | |
906e58ca NC |
2451 | /* Small local sym to section mapping cache. */ |
2452 | struct sym_sec_cache sym_sec; | |
2453 | ||
2454 | /* For convenience in allocate_dynrelocs. */ | |
2455 | bfd * obfd; | |
2456 | ||
2457 | /* The stub hash table. */ | |
2458 | struct bfd_hash_table stub_hash_table; | |
2459 | ||
2460 | /* Linker stub bfd. */ | |
2461 | bfd *stub_bfd; | |
2462 | ||
2463 | /* Linker call-backs. */ | |
2464 | asection * (*add_stub_section) (const char *, asection *); | |
2465 | void (*layout_sections_again) (void); | |
2466 | ||
2467 | /* Array to keep track of which stub sections have been created, and | |
2468 | information on stub grouping. */ | |
2469 | struct map_stub | |
2470 | { | |
2471 | /* This is the section to which stubs in the group will be | |
2472 | attached. */ | |
2473 | asection *link_sec; | |
2474 | /* The stub section. */ | |
2475 | asection *stub_sec; | |
2476 | } *stub_group; | |
2477 | ||
2478 | /* Assorted information used by elf32_arm_size_stubs. */ | |
2479 | unsigned int bfd_count; | |
2480 | int top_index; | |
2481 | asection **input_list; | |
2482 | }; | |
252b5132 | 2483 | |
780a67af NC |
2484 | /* Create an entry in an ARM ELF linker hash table. */ |
2485 | ||
2486 | static struct bfd_hash_entry * | |
57e8b36a NC |
2487 | elf32_arm_link_hash_newfunc (struct bfd_hash_entry * entry, |
2488 | struct bfd_hash_table * table, | |
2489 | const char * string) | |
780a67af NC |
2490 | { |
2491 | struct elf32_arm_link_hash_entry * ret = | |
2492 | (struct elf32_arm_link_hash_entry *) entry; | |
2493 | ||
2494 | /* Allocate the structure if it has not already been allocated by a | |
2495 | subclass. */ | |
906e58ca | 2496 | if (ret == NULL) |
57e8b36a NC |
2497 | ret = bfd_hash_allocate (table, sizeof (struct elf32_arm_link_hash_entry)); |
2498 | if (ret == NULL) | |
780a67af NC |
2499 | return (struct bfd_hash_entry *) ret; |
2500 | ||
2501 | /* Call the allocation method of the superclass. */ | |
2502 | ret = ((struct elf32_arm_link_hash_entry *) | |
2503 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
2504 | table, string)); | |
57e8b36a | 2505 | if (ret != NULL) |
b7693d02 DJ |
2506 | { |
2507 | ret->relocs_copied = NULL; | |
ba93b8ac | 2508 | ret->tls_type = GOT_UNKNOWN; |
b7693d02 | 2509 | ret->plt_thumb_refcount = 0; |
bd97cb95 | 2510 | ret->plt_maybe_thumb_refcount = 0; |
b7693d02 | 2511 | ret->plt_got_offset = -1; |
a4fd1a8e | 2512 | ret->export_glue = NULL; |
906e58ca NC |
2513 | |
2514 | ret->stub_cache = NULL; | |
b7693d02 | 2515 | } |
780a67af NC |
2516 | |
2517 | return (struct bfd_hash_entry *) ret; | |
2518 | } | |
2519 | ||
906e58ca NC |
2520 | /* Initialize an entry in the stub hash table. */ |
2521 | ||
2522 | static struct bfd_hash_entry * | |
2523 | stub_hash_newfunc (struct bfd_hash_entry *entry, | |
2524 | struct bfd_hash_table *table, | |
2525 | const char *string) | |
2526 | { | |
2527 | /* Allocate the structure if it has not already been allocated by a | |
2528 | subclass. */ | |
2529 | if (entry == NULL) | |
2530 | { | |
2531 | entry = bfd_hash_allocate (table, | |
2532 | sizeof (struct elf32_arm_stub_hash_entry)); | |
2533 | if (entry == NULL) | |
2534 | return entry; | |
2535 | } | |
2536 | ||
2537 | /* Call the allocation method of the superclass. */ | |
2538 | entry = bfd_hash_newfunc (entry, table, string); | |
2539 | if (entry != NULL) | |
2540 | { | |
2541 | struct elf32_arm_stub_hash_entry *eh; | |
2542 | ||
2543 | /* Initialize the local fields. */ | |
2544 | eh = (struct elf32_arm_stub_hash_entry *) entry; | |
2545 | eh->stub_sec = NULL; | |
2546 | eh->stub_offset = 0; | |
2547 | eh->target_value = 0; | |
2548 | eh->target_section = NULL; | |
2549 | eh->stub_type = arm_stub_none; | |
461a49ca DJ |
2550 | eh->stub_size = 0; |
2551 | eh->stub_template = NULL; | |
2552 | eh->stub_template_size = 0; | |
906e58ca NC |
2553 | eh->h = NULL; |
2554 | eh->id_sec = NULL; | |
2555 | } | |
2556 | ||
2557 | return entry; | |
2558 | } | |
2559 | ||
00a97672 | 2560 | /* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up |
5e681ec4 PB |
2561 | shortcuts to them in our hash table. */ |
2562 | ||
2563 | static bfd_boolean | |
57e8b36a | 2564 | create_got_section (bfd *dynobj, struct bfd_link_info *info) |
5e681ec4 PB |
2565 | { |
2566 | struct elf32_arm_link_hash_table *htab; | |
2567 | ||
e5a52504 MM |
2568 | htab = elf32_arm_hash_table (info); |
2569 | /* BPABI objects never have a GOT, or associated sections. */ | |
2570 | if (htab->symbian_p) | |
2571 | return TRUE; | |
2572 | ||
5e681ec4 PB |
2573 | if (! _bfd_elf_create_got_section (dynobj, info)) |
2574 | return FALSE; | |
2575 | ||
5e681ec4 PB |
2576 | htab->sgot = bfd_get_section_by_name (dynobj, ".got"); |
2577 | htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
2578 | if (!htab->sgot || !htab->sgotplt) | |
2579 | abort (); | |
2580 | ||
00a97672 RS |
2581 | htab->srelgot = bfd_make_section_with_flags (dynobj, |
2582 | RELOC_SECTION (htab, ".got"), | |
3496cb2a L |
2583 | (SEC_ALLOC | SEC_LOAD |
2584 | | SEC_HAS_CONTENTS | |
2585 | | SEC_IN_MEMORY | |
2586 | | SEC_LINKER_CREATED | |
2587 | | SEC_READONLY)); | |
5e681ec4 | 2588 | if (htab->srelgot == NULL |
5e681ec4 PB |
2589 | || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2)) |
2590 | return FALSE; | |
2591 | return TRUE; | |
2592 | } | |
2593 | ||
00a97672 RS |
2594 | /* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and |
2595 | .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our | |
5e681ec4 PB |
2596 | hash table. */ |
2597 | ||
2598 | static bfd_boolean | |
57e8b36a | 2599 | elf32_arm_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5e681ec4 PB |
2600 | { |
2601 | struct elf32_arm_link_hash_table *htab; | |
2602 | ||
2603 | htab = elf32_arm_hash_table (info); | |
2604 | if (!htab->sgot && !create_got_section (dynobj, info)) | |
2605 | return FALSE; | |
2606 | ||
2607 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
2608 | return FALSE; | |
2609 | ||
2610 | htab->splt = bfd_get_section_by_name (dynobj, ".plt"); | |
00a97672 RS |
2611 | htab->srelplt = bfd_get_section_by_name (dynobj, |
2612 | RELOC_SECTION (htab, ".plt")); | |
5e681ec4 PB |
2613 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); |
2614 | if (!info->shared) | |
00a97672 RS |
2615 | htab->srelbss = bfd_get_section_by_name (dynobj, |
2616 | RELOC_SECTION (htab, ".bss")); | |
2617 | ||
2618 | if (htab->vxworks_p) | |
2619 | { | |
2620 | if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2)) | |
2621 | return FALSE; | |
2622 | ||
2623 | if (info->shared) | |
2624 | { | |
2625 | htab->plt_header_size = 0; | |
2626 | htab->plt_entry_size | |
2627 | = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry); | |
2628 | } | |
2629 | else | |
2630 | { | |
2631 | htab->plt_header_size | |
2632 | = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry); | |
2633 | htab->plt_entry_size | |
2634 | = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry); | |
2635 | } | |
2636 | } | |
5e681ec4 | 2637 | |
906e58ca | 2638 | if (!htab->splt |
e5a52504 MM |
2639 | || !htab->srelplt |
2640 | || !htab->sdynbss | |
5e681ec4 PB |
2641 | || (!info->shared && !htab->srelbss)) |
2642 | abort (); | |
2643 | ||
2644 | return TRUE; | |
2645 | } | |
2646 | ||
906e58ca NC |
2647 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
2648 | ||
2649 | static void | |
2650 | elf32_arm_copy_indirect_symbol (struct bfd_link_info *info, | |
2651 | struct elf_link_hash_entry *dir, | |
2652 | struct elf_link_hash_entry *ind) | |
2653 | { | |
2654 | struct elf32_arm_link_hash_entry *edir, *eind; | |
2655 | ||
2656 | edir = (struct elf32_arm_link_hash_entry *) dir; | |
2657 | eind = (struct elf32_arm_link_hash_entry *) ind; | |
2658 | ||
2659 | if (eind->relocs_copied != NULL) | |
2660 | { | |
2661 | if (edir->relocs_copied != NULL) | |
2662 | { | |
2663 | struct elf32_arm_relocs_copied **pp; | |
2664 | struct elf32_arm_relocs_copied *p; | |
2665 | ||
2666 | /* Add reloc counts against the indirect sym to the direct sym | |
2667 | list. Merge any entries against the same section. */ | |
2668 | for (pp = &eind->relocs_copied; (p = *pp) != NULL; ) | |
2669 | { | |
2670 | struct elf32_arm_relocs_copied *q; | |
2671 | ||
2672 | for (q = edir->relocs_copied; q != NULL; q = q->next) | |
2673 | if (q->section == p->section) | |
2674 | { | |
2675 | q->pc_count += p->pc_count; | |
2676 | q->count += p->count; | |
2677 | *pp = p->next; | |
2678 | break; | |
2679 | } | |
2680 | if (q == NULL) | |
2681 | pp = &p->next; | |
2682 | } | |
2683 | *pp = edir->relocs_copied; | |
2684 | } | |
2685 | ||
2686 | edir->relocs_copied = eind->relocs_copied; | |
2687 | eind->relocs_copied = NULL; | |
2688 | } | |
2689 | ||
2690 | if (ind->root.type == bfd_link_hash_indirect) | |
2691 | { | |
2692 | /* Copy over PLT info. */ | |
2693 | edir->plt_thumb_refcount += eind->plt_thumb_refcount; | |
2694 | eind->plt_thumb_refcount = 0; | |
2695 | edir->plt_maybe_thumb_refcount += eind->plt_maybe_thumb_refcount; | |
2696 | eind->plt_maybe_thumb_refcount = 0; | |
2697 | ||
2698 | if (dir->got.refcount <= 0) | |
2699 | { | |
2700 | edir->tls_type = eind->tls_type; | |
2701 | eind->tls_type = GOT_UNKNOWN; | |
2702 | } | |
2703 | } | |
2704 | ||
2705 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
2706 | } | |
2707 | ||
2708 | /* Create an ARM elf linker hash table. */ | |
2709 | ||
2710 | static struct bfd_link_hash_table * | |
2711 | elf32_arm_link_hash_table_create (bfd *abfd) | |
2712 | { | |
2713 | struct elf32_arm_link_hash_table *ret; | |
2714 | bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table); | |
2715 | ||
2716 | ret = bfd_malloc (amt); | |
2717 | if (ret == NULL) | |
2718 | return NULL; | |
2719 | ||
2720 | if (!_bfd_elf_link_hash_table_init (& ret->root, abfd, | |
2721 | elf32_arm_link_hash_newfunc, | |
2722 | sizeof (struct elf32_arm_link_hash_entry))) | |
2723 | { | |
2724 | free (ret); | |
2725 | return NULL; | |
2726 | } | |
2727 | ||
2728 | ret->sgot = NULL; | |
2729 | ret->sgotplt = NULL; | |
2730 | ret->srelgot = NULL; | |
2731 | ret->splt = NULL; | |
2732 | ret->srelplt = NULL; | |
2733 | ret->sdynbss = NULL; | |
2734 | ret->srelbss = NULL; | |
2735 | ret->srelplt2 = NULL; | |
2736 | ret->thumb_glue_size = 0; | |
2737 | ret->arm_glue_size = 0; | |
2738 | ret->bx_glue_size = 0; | |
2739 | memset (ret->bx_glue_offset, 0, sizeof (ret->bx_glue_offset)); | |
2740 | ret->vfp11_fix = BFD_ARM_VFP11_FIX_NONE; | |
2741 | ret->vfp11_erratum_glue_size = 0; | |
2742 | ret->num_vfp11_fixes = 0; | |
2743 | ret->bfd_of_glue_owner = NULL; | |
2744 | ret->byteswap_code = 0; | |
2745 | ret->target1_is_rel = 0; | |
2746 | ret->target2_reloc = R_ARM_NONE; | |
2747 | #ifdef FOUR_WORD_PLT | |
2748 | ret->plt_header_size = 16; | |
2749 | ret->plt_entry_size = 16; | |
2750 | #else | |
2751 | ret->plt_header_size = 20; | |
2752 | ret->plt_entry_size = 12; | |
2753 | #endif | |
2754 | ret->fix_v4bx = 0; | |
2755 | ret->use_blx = 0; | |
2756 | ret->vxworks_p = 0; | |
2757 | ret->symbian_p = 0; | |
2758 | ret->use_rel = 1; | |
2759 | ret->sym_sec.abfd = NULL; | |
2760 | ret->obfd = abfd; | |
2761 | ret->tls_ldm_got.refcount = 0; | |
6cee0a6f L |
2762 | ret->stub_bfd = NULL; |
2763 | ret->add_stub_section = NULL; | |
2764 | ret->layout_sections_again = NULL; | |
2765 | ret->stub_group = NULL; | |
2766 | ret->bfd_count = 0; | |
2767 | ret->top_index = 0; | |
2768 | ret->input_list = NULL; | |
906e58ca NC |
2769 | |
2770 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc, | |
2771 | sizeof (struct elf32_arm_stub_hash_entry))) | |
2772 | { | |
2773 | free (ret); | |
2774 | return NULL; | |
2775 | } | |
2776 | ||
2777 | return &ret->root.root; | |
2778 | } | |
2779 | ||
2780 | /* Free the derived linker hash table. */ | |
2781 | ||
2782 | static void | |
2783 | elf32_arm_hash_table_free (struct bfd_link_hash_table *hash) | |
2784 | { | |
2785 | struct elf32_arm_link_hash_table *ret | |
2786 | = (struct elf32_arm_link_hash_table *) hash; | |
2787 | ||
2788 | bfd_hash_table_free (&ret->stub_hash_table); | |
2789 | _bfd_generic_link_hash_table_free (hash); | |
2790 | } | |
2791 | ||
2792 | /* Determine if we're dealing with a Thumb only architecture. */ | |
2793 | ||
2794 | static bfd_boolean | |
2795 | using_thumb_only (struct elf32_arm_link_hash_table *globals) | |
2796 | { | |
2797 | int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, | |
2798 | Tag_CPU_arch); | |
2799 | int profile; | |
2800 | ||
2801 | if (arch != TAG_CPU_ARCH_V7) | |
2802 | return FALSE; | |
2803 | ||
2804 | profile = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, | |
2805 | Tag_CPU_arch_profile); | |
2806 | ||
2807 | return profile == 'M'; | |
2808 | } | |
2809 | ||
2810 | /* Determine if we're dealing with a Thumb-2 object. */ | |
2811 | ||
2812 | static bfd_boolean | |
2813 | using_thumb2 (struct elf32_arm_link_hash_table *globals) | |
2814 | { | |
2815 | int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, | |
2816 | Tag_CPU_arch); | |
2817 | return arch == TAG_CPU_ARCH_V6T2 || arch >= TAG_CPU_ARCH_V7; | |
2818 | } | |
2819 | ||
f4ac8484 DJ |
2820 | static bfd_boolean |
2821 | arm_stub_is_thumb (enum elf32_arm_stub_type stub_type) | |
2822 | { | |
2823 | switch (stub_type) | |
2824 | { | |
fea2b4d6 CL |
2825 | case arm_stub_long_branch_thumb_only: |
2826 | case arm_stub_long_branch_v4t_thumb_arm: | |
2827 | case arm_stub_short_branch_v4t_thumb_arm: | |
ebe24dd4 CL |
2828 | case arm_stub_long_branch_v4t_thumb_arm_pic: |
2829 | case arm_stub_long_branch_thumb_only_pic: | |
f4ac8484 DJ |
2830 | return TRUE; |
2831 | case arm_stub_none: | |
2832 | BFD_FAIL (); | |
2833 | return FALSE; | |
2834 | break; | |
2835 | default: | |
2836 | return FALSE; | |
2837 | } | |
2838 | } | |
2839 | ||
906e58ca NC |
2840 | /* Determine the type of stub needed, if any, for a call. */ |
2841 | ||
2842 | static enum elf32_arm_stub_type | |
2843 | arm_type_of_stub (struct bfd_link_info *info, | |
2844 | asection *input_sec, | |
2845 | const Elf_Internal_Rela *rel, | |
2846 | unsigned char st_type, | |
2847 | struct elf32_arm_link_hash_entry *hash, | |
c820be07 NC |
2848 | bfd_vma destination, |
2849 | asection *sym_sec, | |
2850 | bfd *input_bfd, | |
2851 | const char *name) | |
906e58ca NC |
2852 | { |
2853 | bfd_vma location; | |
2854 | bfd_signed_vma branch_offset; | |
2855 | unsigned int r_type; | |
2856 | struct elf32_arm_link_hash_table * globals; | |
2857 | int thumb2; | |
2858 | int thumb_only; | |
2859 | enum elf32_arm_stub_type stub_type = arm_stub_none; | |
5fa9e92f | 2860 | int use_plt = 0; |
906e58ca | 2861 | |
da5938a2 | 2862 | /* We don't know the actual type of destination in case it is of |
8029a119 | 2863 | type STT_SECTION: give up. */ |
da5938a2 NC |
2864 | if (st_type == STT_SECTION) |
2865 | return stub_type; | |
2866 | ||
906e58ca NC |
2867 | globals = elf32_arm_hash_table (info); |
2868 | ||
2869 | thumb_only = using_thumb_only (globals); | |
2870 | ||
2871 | thumb2 = using_thumb2 (globals); | |
2872 | ||
2873 | /* Determine where the call point is. */ | |
2874 | location = (input_sec->output_offset | |
2875 | + input_sec->output_section->vma | |
2876 | + rel->r_offset); | |
2877 | ||
2878 | branch_offset = (bfd_signed_vma)(destination - location); | |
2879 | ||
2880 | r_type = ELF32_R_TYPE (rel->r_info); | |
2881 | ||
5fa9e92f | 2882 | /* Keep a simpler condition, for the sake of clarity. */ |
329dcd78 | 2883 | if (globals->splt != NULL && hash != NULL && hash->root.plt.offset != (bfd_vma) -1) |
5fa9e92f CL |
2884 | { |
2885 | use_plt = 1; | |
2886 | /* Note when dealing with PLT entries: the main PLT stub is in | |
2887 | ARM mode, so if the branch is in Thumb mode, another | |
2888 | Thumb->ARM stub will be inserted later just before the ARM | |
2889 | PLT stub. We don't take this extra distance into account | |
2890 | here, because if a long branch stub is needed, we'll add a | |
2891 | Thumb->Arm one and branch directly to the ARM PLT entry | |
2892 | because it avoids spreading offset corrections in several | |
2893 | places. */ | |
2894 | } | |
906e58ca NC |
2895 | |
2896 | if (r_type == R_ARM_THM_CALL) | |
2897 | { | |
5fa9e92f CL |
2898 | /* Handle cases where: |
2899 | - this call goes too far (different Thumb/Thumb2 max | |
2900 | distance) | |
2901 | - it's a Thumb->Arm call and blx is not available. A stub is | |
2902 | needed in this case, but only if this call is not through a | |
2903 | PLT entry. Indeed, PLT stubs handle mode switching already. | |
2904 | */ | |
906e58ca NC |
2905 | if ((!thumb2 |
2906 | && (branch_offset > THM_MAX_FWD_BRANCH_OFFSET | |
2907 | || (branch_offset < THM_MAX_BWD_BRANCH_OFFSET))) | |
2908 | || (thumb2 | |
2909 | && (branch_offset > THM2_MAX_FWD_BRANCH_OFFSET | |
2910 | || (branch_offset < THM2_MAX_BWD_BRANCH_OFFSET))) | |
5fa9e92f CL |
2911 | || ((st_type != STT_ARM_TFUNC) |
2912 | && ((r_type == R_ARM_THM_CALL) && !globals->use_blx) | |
2913 | && !use_plt)) | |
906e58ca NC |
2914 | { |
2915 | if (st_type == STT_ARM_TFUNC) | |
2916 | { | |
2917 | /* Thumb to thumb. */ | |
2918 | if (!thumb_only) | |
2919 | { | |
2920 | stub_type = (info->shared | globals->pic_veneer) | |
c2b4a39d | 2921 | /* PIC stubs. */ |
906e58ca | 2922 | ? ((globals->use_blx) |
c2b4a39d | 2923 | /* V5T and above. */ |
cf3eccff | 2924 | ? arm_stub_long_branch_any_thumb_pic |
ebe24dd4 CL |
2925 | /* On V4T, use Thumb code only. */ |
2926 | : arm_stub_long_branch_thumb_only_pic) | |
c2b4a39d CL |
2927 | |
2928 | /* non-PIC stubs. */ | |
2929 | : ((globals->use_blx) | |
2930 | /* V5T and above. */ | |
2931 | ? arm_stub_long_branch_any_any | |
2932 | /* V4T. */ | |
2933 | : arm_stub_long_branch_thumb_only); | |
906e58ca NC |
2934 | } |
2935 | else | |
2936 | { | |
2937 | stub_type = (info->shared | globals->pic_veneer) | |
ebe24dd4 CL |
2938 | /* PIC stub. */ |
2939 | ? arm_stub_long_branch_thumb_only_pic | |
c2b4a39d CL |
2940 | /* non-PIC stub. */ |
2941 | : arm_stub_long_branch_thumb_only; | |
906e58ca NC |
2942 | } |
2943 | } | |
2944 | else | |
2945 | { | |
2946 | /* Thumb to arm. */ | |
c820be07 NC |
2947 | if (sym_sec != NULL |
2948 | && sym_sec->owner != NULL | |
2949 | && !INTERWORK_FLAG (sym_sec->owner)) | |
2950 | { | |
2951 | (*_bfd_error_handler) | |
2952 | (_("%B(%s): warning: interworking not enabled.\n" | |
2953 | " first occurrence: %B: Thumb call to ARM"), | |
2954 | sym_sec->owner, input_bfd, name); | |
2955 | } | |
2956 | ||
906e58ca | 2957 | stub_type = (info->shared | globals->pic_veneer) |
c2b4a39d | 2958 | /* PIC stubs. */ |
906e58ca | 2959 | ? ((globals->use_blx) |
c2b4a39d | 2960 | /* V5T and above. */ |
cf3eccff | 2961 | ? arm_stub_long_branch_any_arm_pic |
ebe24dd4 CL |
2962 | /* V4T PIC stub. */ |
2963 | : arm_stub_long_branch_v4t_thumb_arm_pic) | |
c2b4a39d CL |
2964 | |
2965 | /* non-PIC stubs. */ | |
2966 | : ((globals->use_blx) | |
2967 | /* V5T and above. */ | |
2968 | ? arm_stub_long_branch_any_any | |
2969 | /* V4T. */ | |
2970 | : arm_stub_long_branch_v4t_thumb_arm); | |
c820be07 NC |
2971 | |
2972 | /* Handle v4t short branches. */ | |
fea2b4d6 | 2973 | if ((stub_type == arm_stub_long_branch_v4t_thumb_arm) |
c820be07 NC |
2974 | && (branch_offset <= THM_MAX_FWD_BRANCH_OFFSET) |
2975 | && (branch_offset >= THM_MAX_BWD_BRANCH_OFFSET)) | |
fea2b4d6 | 2976 | stub_type = arm_stub_short_branch_v4t_thumb_arm; |
906e58ca NC |
2977 | } |
2978 | } | |
2979 | } | |
2980 | else if (r_type == R_ARM_CALL) | |
2981 | { | |
2982 | if (st_type == STT_ARM_TFUNC) | |
2983 | { | |
2984 | /* Arm to thumb. */ | |
c820be07 NC |
2985 | |
2986 | if (sym_sec != NULL | |
2987 | && sym_sec->owner != NULL | |
2988 | && !INTERWORK_FLAG (sym_sec->owner)) | |
2989 | { | |
2990 | (*_bfd_error_handler) | |
2991 | (_("%B(%s): warning: interworking not enabled.\n" | |
c2b4a39d | 2992 | " first occurrence: %B: ARM call to Thumb"), |
c820be07 NC |
2993 | sym_sec->owner, input_bfd, name); |
2994 | } | |
2995 | ||
2996 | /* We have an extra 2-bytes reach because of | |
2997 | the mode change (bit 24 (H) of BLX encoding). */ | |
906e58ca NC |
2998 | if (branch_offset > (ARM_MAX_FWD_BRANCH_OFFSET + 2) |
2999 | || (branch_offset < ARM_MAX_BWD_BRANCH_OFFSET) | |
3000 | || !globals->use_blx) | |
3001 | { | |
3002 | stub_type = (info->shared | globals->pic_veneer) | |
c2b4a39d | 3003 | /* PIC stubs. */ |
ebe24dd4 CL |
3004 | ? ((globals->use_blx) |
3005 | /* V5T and above. */ | |
3006 | ? arm_stub_long_branch_any_thumb_pic | |
3007 | /* V4T stub. */ | |
3008 | : arm_stub_long_branch_v4t_arm_thumb_pic) | |
3009 | ||
c2b4a39d CL |
3010 | /* non-PIC stubs. */ |
3011 | : ((globals->use_blx) | |
3012 | /* V5T and above. */ | |
3013 | ? arm_stub_long_branch_any_any | |
3014 | /* V4T. */ | |
3015 | : arm_stub_long_branch_v4t_arm_thumb); | |
906e58ca NC |
3016 | } |
3017 | } | |
3018 | else | |
3019 | { | |
3020 | /* Arm to arm. */ | |
3021 | if (branch_offset > ARM_MAX_FWD_BRANCH_OFFSET | |
3022 | || (branch_offset < ARM_MAX_BWD_BRANCH_OFFSET)) | |
3023 | { | |
3024 | stub_type = (info->shared | globals->pic_veneer) | |
c2b4a39d | 3025 | /* PIC stubs. */ |
cf3eccff | 3026 | ? arm_stub_long_branch_any_arm_pic |
c2b4a39d | 3027 | /* non-PIC stubs. */ |
fea2b4d6 | 3028 | : arm_stub_long_branch_any_any; |
906e58ca NC |
3029 | } |
3030 | } | |
3031 | } | |
3032 | ||
3033 | return stub_type; | |
3034 | } | |
3035 | ||
3036 | /* Build a name for an entry in the stub hash table. */ | |
3037 | ||
3038 | static char * | |
3039 | elf32_arm_stub_name (const asection *input_section, | |
3040 | const asection *sym_sec, | |
3041 | const struct elf32_arm_link_hash_entry *hash, | |
3042 | const Elf_Internal_Rela *rel) | |
3043 | { | |
3044 | char *stub_name; | |
3045 | bfd_size_type len; | |
3046 | ||
3047 | if (hash) | |
3048 | { | |
3049 | len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 8 + 1; | |
3050 | stub_name = bfd_malloc (len); | |
3051 | if (stub_name != NULL) | |
3052 | sprintf (stub_name, "%08x_%s+%x", | |
3053 | input_section->id & 0xffffffff, | |
3054 | hash->root.root.root.string, | |
3055 | (int) rel->r_addend & 0xffffffff); | |
3056 | } | |
3057 | else | |
3058 | { | |
3059 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; | |
3060 | stub_name = bfd_malloc (len); | |
3061 | if (stub_name != NULL) | |
3062 | sprintf (stub_name, "%08x_%x:%x+%x", | |
3063 | input_section->id & 0xffffffff, | |
3064 | sym_sec->id & 0xffffffff, | |
3065 | (int) ELF32_R_SYM (rel->r_info) & 0xffffffff, | |
3066 | (int) rel->r_addend & 0xffffffff); | |
3067 | } | |
3068 | ||
3069 | return stub_name; | |
3070 | } | |
3071 | ||
3072 | /* Look up an entry in the stub hash. Stub entries are cached because | |
3073 | creating the stub name takes a bit of time. */ | |
3074 | ||
3075 | static struct elf32_arm_stub_hash_entry * | |
3076 | elf32_arm_get_stub_entry (const asection *input_section, | |
3077 | const asection *sym_sec, | |
3078 | struct elf_link_hash_entry *hash, | |
3079 | const Elf_Internal_Rela *rel, | |
3080 | struct elf32_arm_link_hash_table *htab) | |
3081 | { | |
3082 | struct elf32_arm_stub_hash_entry *stub_entry; | |
3083 | struct elf32_arm_link_hash_entry *h = (struct elf32_arm_link_hash_entry *) hash; | |
3084 | const asection *id_sec; | |
3085 | ||
3086 | if ((input_section->flags & SEC_CODE) == 0) | |
3087 | return NULL; | |
3088 | ||
3089 | /* If this input section is part of a group of sections sharing one | |
3090 | stub section, then use the id of the first section in the group. | |
3091 | Stub names need to include a section id, as there may well be | |
3092 | more than one stub used to reach say, printf, and we need to | |
3093 | distinguish between them. */ | |
3094 | id_sec = htab->stub_group[input_section->id].link_sec; | |
3095 | ||
3096 | if (h != NULL && h->stub_cache != NULL | |
3097 | && h->stub_cache->h == h | |
3098 | && h->stub_cache->id_sec == id_sec) | |
3099 | { | |
3100 | stub_entry = h->stub_cache; | |
3101 | } | |
3102 | else | |
3103 | { | |
3104 | char *stub_name; | |
3105 | ||
3106 | stub_name = elf32_arm_stub_name (id_sec, sym_sec, h, rel); | |
3107 | if (stub_name == NULL) | |
3108 | return NULL; | |
3109 | ||
3110 | stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, | |
3111 | stub_name, FALSE, FALSE); | |
3112 | if (h != NULL) | |
3113 | h->stub_cache = stub_entry; | |
3114 | ||
3115 | free (stub_name); | |
3116 | } | |
3117 | ||
3118 | return stub_entry; | |
3119 | } | |
3120 | ||
906e58ca NC |
3121 | /* Add a new stub entry to the stub hash. Not all fields of the new |
3122 | stub entry are initialised. */ | |
3123 | ||
3124 | static struct elf32_arm_stub_hash_entry * | |
3125 | elf32_arm_add_stub (const char *stub_name, | |
3126 | asection *section, | |
da5938a2 | 3127 | struct elf32_arm_link_hash_table *htab) |
906e58ca NC |
3128 | { |
3129 | asection *link_sec; | |
3130 | asection *stub_sec; | |
3131 | struct elf32_arm_stub_hash_entry *stub_entry; | |
3132 | ||
3133 | link_sec = htab->stub_group[section->id].link_sec; | |
3134 | stub_sec = htab->stub_group[section->id].stub_sec; | |
3135 | if (stub_sec == NULL) | |
3136 | { | |
3137 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
3138 | if (stub_sec == NULL) | |
3139 | { | |
3140 | size_t namelen; | |
3141 | bfd_size_type len; | |
3142 | char *s_name; | |
3143 | ||
3144 | namelen = strlen (link_sec->name); | |
3145 | len = namelen + sizeof (STUB_SUFFIX); | |
3146 | s_name = bfd_alloc (htab->stub_bfd, len); | |
3147 | if (s_name == NULL) | |
3148 | return NULL; | |
3149 | ||
3150 | memcpy (s_name, link_sec->name, namelen); | |
3151 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
3152 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); | |
3153 | if (stub_sec == NULL) | |
3154 | return NULL; | |
3155 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
3156 | } | |
3157 | htab->stub_group[section->id].stub_sec = stub_sec; | |
3158 | } | |
3159 | ||
3160 | /* Enter this entry into the linker stub hash table. */ | |
3161 | stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
3162 | TRUE, FALSE); | |
3163 | if (stub_entry == NULL) | |
3164 | { | |
3165 | (*_bfd_error_handler) (_("%s: cannot create stub entry %s"), | |
3166 | section->owner, | |
3167 | stub_name); | |
3168 | return NULL; | |
3169 | } | |
3170 | ||
3171 | stub_entry->stub_sec = stub_sec; | |
3172 | stub_entry->stub_offset = 0; | |
3173 | stub_entry->id_sec = link_sec; | |
3174 | ||
906e58ca NC |
3175 | return stub_entry; |
3176 | } | |
3177 | ||
3178 | /* Store an Arm insn into an output section not processed by | |
3179 | elf32_arm_write_section. */ | |
3180 | ||
3181 | static void | |
8029a119 NC |
3182 | put_arm_insn (struct elf32_arm_link_hash_table * htab, |
3183 | bfd * output_bfd, bfd_vma val, void * ptr) | |
906e58ca NC |
3184 | { |
3185 | if (htab->byteswap_code != bfd_little_endian (output_bfd)) | |
3186 | bfd_putl32 (val, ptr); | |
3187 | else | |
3188 | bfd_putb32 (val, ptr); | |
3189 | } | |
3190 | ||
3191 | /* Store a 16-bit Thumb insn into an output section not processed by | |
3192 | elf32_arm_write_section. */ | |
3193 | ||
3194 | static void | |
8029a119 NC |
3195 | put_thumb_insn (struct elf32_arm_link_hash_table * htab, |
3196 | bfd * output_bfd, bfd_vma val, void * ptr) | |
906e58ca NC |
3197 | { |
3198 | if (htab->byteswap_code != bfd_little_endian (output_bfd)) | |
3199 | bfd_putl16 (val, ptr); | |
3200 | else | |
3201 | bfd_putb16 (val, ptr); | |
3202 | } | |
3203 | ||
3204 | static bfd_boolean | |
3205 | arm_build_one_stub (struct bfd_hash_entry *gen_entry, | |
3206 | void * in_arg) | |
3207 | { | |
3208 | struct elf32_arm_stub_hash_entry *stub_entry; | |
3209 | struct bfd_link_info *info; | |
3210 | struct elf32_arm_link_hash_table *htab; | |
3211 | asection *stub_sec; | |
3212 | bfd *stub_bfd; | |
3213 | bfd_vma stub_addr; | |
3214 | bfd_byte *loc; | |
3215 | bfd_vma sym_value; | |
3216 | int template_size; | |
3217 | int size; | |
461a49ca | 3218 | const insn_sequence *template; |
906e58ca NC |
3219 | int i; |
3220 | struct elf32_arm_link_hash_table * globals; | |
461a49ca | 3221 | int stub_reloc_idx = -1; |
4e31c731 | 3222 | int stub_reloc_offset = 0; |
906e58ca NC |
3223 | |
3224 | /* Massage our args to the form they really have. */ | |
3225 | stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry; | |
3226 | info = (struct bfd_link_info *) in_arg; | |
3227 | ||
3228 | globals = elf32_arm_hash_table (info); | |
3229 | ||
3230 | htab = elf32_arm_hash_table (info); | |
3231 | stub_sec = stub_entry->stub_sec; | |
3232 | ||
3233 | /* Make a note of the offset within the stubs for this entry. */ | |
3234 | stub_entry->stub_offset = stub_sec->size; | |
3235 | loc = stub_sec->contents + stub_entry->stub_offset; | |
3236 | ||
3237 | stub_bfd = stub_sec->owner; | |
3238 | ||
3239 | /* This is the address of the start of the stub. */ | |
3240 | stub_addr = stub_sec->output_section->vma + stub_sec->output_offset | |
3241 | + stub_entry->stub_offset; | |
3242 | ||
3243 | /* This is the address of the stub destination. */ | |
3244 | sym_value = (stub_entry->target_value | |
3245 | + stub_entry->target_section->output_offset | |
3246 | + stub_entry->target_section->output_section->vma); | |
3247 | ||
461a49ca DJ |
3248 | template = stub_entry->stub_template; |
3249 | template_size = stub_entry->stub_template_size; | |
906e58ca NC |
3250 | |
3251 | size = 0; | |
461a49ca | 3252 | for (i = 0; i < template_size; i++) |
906e58ca | 3253 | { |
4e31c731 | 3254 | switch (template[i].type) |
461a49ca DJ |
3255 | { |
3256 | case THUMB16_TYPE: | |
3257 | put_thumb_insn (globals, stub_bfd, template[i].data, loc + size); | |
3258 | size += 2; | |
3259 | break; | |
906e58ca | 3260 | |
461a49ca DJ |
3261 | case ARM_TYPE: |
3262 | put_arm_insn (globals, stub_bfd, template[i].data, loc + size); | |
3263 | /* Handle cases where the target is encoded within the | |
3264 | instruction. */ | |
ebe24dd4 | 3265 | if (template[i].r_type == R_ARM_JUMP24) |
461a49ca DJ |
3266 | { |
3267 | stub_reloc_idx = i; | |
3268 | stub_reloc_offset = size; | |
3269 | } | |
3270 | size += 4; | |
3271 | break; | |
3272 | ||
3273 | case DATA_TYPE: | |
3274 | bfd_put_32 (stub_bfd, template[i].data, loc + size); | |
3275 | stub_reloc_idx = i; | |
3276 | stub_reloc_offset = size; | |
3277 | size += 4; | |
3278 | break; | |
3279 | ||
3280 | default: | |
3281 | BFD_FAIL (); | |
3282 | return FALSE; | |
3283 | } | |
906e58ca | 3284 | } |
461a49ca | 3285 | |
906e58ca NC |
3286 | stub_sec->size += size; |
3287 | ||
461a49ca DJ |
3288 | /* Stub size has already been computed in arm_size_one_stub. Check |
3289 | consistency. */ | |
3290 | BFD_ASSERT (size == stub_entry->stub_size); | |
3291 | ||
906e58ca NC |
3292 | /* Destination is Thumb. Force bit 0 to 1 to reflect this. */ |
3293 | if (stub_entry->st_type == STT_ARM_TFUNC) | |
3294 | sym_value |= 1; | |
3295 | ||
461a49ca DJ |
3296 | /* Assume there is one and only one entry to relocate in each stub. */ |
3297 | BFD_ASSERT (stub_reloc_idx != -1); | |
c820be07 | 3298 | |
ebe24dd4 | 3299 | _bfd_final_link_relocate (elf32_arm_howto_from_type (template[stub_reloc_idx].r_type), |
461a49ca DJ |
3300 | stub_bfd, stub_sec, stub_sec->contents, |
3301 | stub_entry->stub_offset + stub_reloc_offset, | |
3302 | sym_value, template[stub_reloc_idx].reloc_addend); | |
906e58ca NC |
3303 | |
3304 | return TRUE; | |
3305 | } | |
3306 | ||
3307 | /* As above, but don't actually build the stub. Just bump offset so | |
3308 | we know stub section sizes. */ | |
3309 | ||
3310 | static bfd_boolean | |
3311 | arm_size_one_stub (struct bfd_hash_entry *gen_entry, | |
3312 | void * in_arg) | |
3313 | { | |
3314 | struct elf32_arm_stub_hash_entry *stub_entry; | |
3315 | struct elf32_arm_link_hash_table *htab; | |
461a49ca | 3316 | const insn_sequence *template; |
906e58ca NC |
3317 | int template_size; |
3318 | int size; | |
3319 | int i; | |
3320 | ||
3321 | /* Massage our args to the form they really have. */ | |
3322 | stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry; | |
3323 | htab = (struct elf32_arm_link_hash_table *) in_arg; | |
3324 | ||
3325 | switch (stub_entry->stub_type) | |
3326 | { | |
fea2b4d6 CL |
3327 | case arm_stub_long_branch_any_any: |
3328 | template = elf32_arm_stub_long_branch_any_any; | |
ebe24dd4 | 3329 | template_size = ARRAY_SIZE (elf32_arm_stub_long_branch_any_any); |
906e58ca | 3330 | break; |
fea2b4d6 CL |
3331 | case arm_stub_long_branch_v4t_arm_thumb: |
3332 | template = elf32_arm_stub_long_branch_v4t_arm_thumb; | |
ebe24dd4 | 3333 | template_size = ARRAY_SIZE (elf32_arm_stub_long_branch_v4t_arm_thumb); |
906e58ca | 3334 | break; |
fea2b4d6 CL |
3335 | case arm_stub_long_branch_thumb_only: |
3336 | template = elf32_arm_stub_long_branch_thumb_only; | |
ebe24dd4 | 3337 | template_size = ARRAY_SIZE (elf32_arm_stub_long_branch_thumb_only); |
906e58ca | 3338 | break; |
fea2b4d6 CL |
3339 | case arm_stub_long_branch_v4t_thumb_arm: |
3340 | template = elf32_arm_stub_long_branch_v4t_thumb_arm; | |
ebe24dd4 | 3341 | template_size = ARRAY_SIZE (elf32_arm_stub_long_branch_v4t_thumb_arm); |
906e58ca | 3342 | break; |
fea2b4d6 CL |
3343 | case arm_stub_short_branch_v4t_thumb_arm: |
3344 | template = elf32_arm_stub_short_branch_v4t_thumb_arm; | |
ebe24dd4 | 3345 | template_size = ARRAY_SIZE (elf32_arm_stub_short_branch_v4t_thumb_arm); |
c820be07 | 3346 | break; |
cf3eccff DJ |
3347 | case arm_stub_long_branch_any_arm_pic: |
3348 | template = elf32_arm_stub_long_branch_any_arm_pic; | |
ebe24dd4 | 3349 | template_size = ARRAY_SIZE (elf32_arm_stub_long_branch_any_arm_pic); |
cf3eccff DJ |
3350 | break; |
3351 | case arm_stub_long_branch_any_thumb_pic: | |
3352 | template = elf32_arm_stub_long_branch_any_thumb_pic; | |
ebe24dd4 CL |
3353 | template_size = ARRAY_SIZE (elf32_arm_stub_long_branch_any_thumb_pic); |
3354 | break; | |
3355 | case arm_stub_long_branch_v4t_arm_thumb_pic: | |
3356 | template = elf32_arm_stub_long_branch_v4t_arm_thumb_pic; | |
3357 | template_size = ARRAY_SIZE (elf32_arm_stub_long_branch_v4t_arm_thumb_pic); | |
3358 | break; | |
3359 | case arm_stub_long_branch_v4t_thumb_arm_pic: | |
3360 | template = elf32_arm_stub_long_branch_v4t_thumb_arm_pic; | |
3361 | template_size = ARRAY_SIZE (elf32_arm_stub_long_branch_v4t_thumb_arm_pic); | |
3362 | break; | |
3363 | case arm_stub_long_branch_thumb_only_pic: | |
3364 | template = elf32_arm_stub_long_branch_thumb_only_pic; | |
3365 | template_size = ARRAY_SIZE (elf32_arm_stub_long_branch_thumb_only_pic); | |
906e58ca NC |
3366 | break; |
3367 | default: | |
3368 | BFD_FAIL (); | |
3369 | return FALSE; | |
906e58ca NC |
3370 | } |
3371 | ||
3372 | size = 0; | |
461a49ca DJ |
3373 | for (i = 0; i < template_size; i++) |
3374 | { | |
4e31c731 | 3375 | switch (template[i].type) |
461a49ca DJ |
3376 | { |
3377 | case THUMB16_TYPE: | |
3378 | size += 2; | |
3379 | break; | |
3380 | ||
3381 | case ARM_TYPE: | |
3382 | size += 4; | |
3383 | break; | |
3384 | ||
3385 | case DATA_TYPE: | |
3386 | size += 4; | |
3387 | break; | |
3388 | ||
3389 | default: | |
3390 | BFD_FAIL (); | |
3391 | return FALSE; | |
3392 | } | |
3393 | } | |
3394 | ||
3395 | stub_entry->stub_size = size; | |
3396 | stub_entry->stub_template = template; | |
3397 | stub_entry->stub_template_size = template_size; | |
3398 | ||
906e58ca NC |
3399 | size = (size + 7) & ~7; |
3400 | stub_entry->stub_sec->size += size; | |
461a49ca | 3401 | |
906e58ca NC |
3402 | return TRUE; |
3403 | } | |
3404 | ||
3405 | /* External entry points for sizing and building linker stubs. */ | |
3406 | ||
3407 | /* Set up various things so that we can make a list of input sections | |
3408 | for each output section included in the link. Returns -1 on error, | |
3409 | 0 when no stubs will be needed, and 1 on success. */ | |
3410 | ||
3411 | int | |
3412 | elf32_arm_setup_section_lists (bfd *output_bfd, | |
3413 | struct bfd_link_info *info) | |
3414 | { | |
3415 | bfd *input_bfd; | |
3416 | unsigned int bfd_count; | |
3417 | int top_id, top_index; | |
3418 | asection *section; | |
3419 | asection **input_list, **list; | |
3420 | bfd_size_type amt; | |
3421 | struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info); | |
3422 | ||
3423 | if (! is_elf_hash_table (htab)) | |
3424 | return 0; | |
3425 | ||
3426 | /* Count the number of input BFDs and find the top input section id. */ | |
3427 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; | |
3428 | input_bfd != NULL; | |
3429 | input_bfd = input_bfd->link_next) | |
3430 | { | |
3431 | bfd_count += 1; | |
3432 | for (section = input_bfd->sections; | |
3433 | section != NULL; | |
3434 | section = section->next) | |
3435 | { | |
3436 | if (top_id < section->id) | |
3437 | top_id = section->id; | |
3438 | } | |
3439 | } | |
3440 | htab->bfd_count = bfd_count; | |
3441 | ||
3442 | amt = sizeof (struct map_stub) * (top_id + 1); | |
3443 | htab->stub_group = bfd_zmalloc (amt); | |
3444 | if (htab->stub_group == NULL) | |
3445 | return -1; | |
3446 | ||
3447 | /* We can't use output_bfd->section_count here to find the top output | |
3448 | section index as some sections may have been removed, and | |
3449 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
3450 | for (section = output_bfd->sections, top_index = 0; | |
3451 | section != NULL; | |
3452 | section = section->next) | |
3453 | { | |
3454 | if (top_index < section->index) | |
3455 | top_index = section->index; | |
3456 | } | |
3457 | ||
3458 | htab->top_index = top_index; | |
3459 | amt = sizeof (asection *) * (top_index + 1); | |
3460 | input_list = bfd_malloc (amt); | |
3461 | htab->input_list = input_list; | |
3462 | if (input_list == NULL) | |
3463 | return -1; | |
3464 | ||
3465 | /* For sections we aren't interested in, mark their entries with a | |
3466 | value we can check later. */ | |
3467 | list = input_list + top_index; | |
3468 | do | |
3469 | *list = bfd_abs_section_ptr; | |
3470 | while (list-- != input_list); | |
3471 | ||
3472 | for (section = output_bfd->sections; | |
3473 | section != NULL; | |
3474 | section = section->next) | |
3475 | { | |
3476 | if ((section->flags & SEC_CODE) != 0) | |
3477 | input_list[section->index] = NULL; | |
3478 | } | |
3479 | ||
3480 | return 1; | |
3481 | } | |
3482 | ||
3483 | /* The linker repeatedly calls this function for each input section, | |
3484 | in the order that input sections are linked into output sections. | |
3485 | Build lists of input sections to determine groupings between which | |
3486 | we may insert linker stubs. */ | |
3487 | ||
3488 | void | |
3489 | elf32_arm_next_input_section (struct bfd_link_info *info, | |
3490 | asection *isec) | |
3491 | { | |
3492 | struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info); | |
3493 | ||
3494 | if (isec->output_section->index <= htab->top_index) | |
3495 | { | |
3496 | asection **list = htab->input_list + isec->output_section->index; | |
3497 | ||
3498 | if (*list != bfd_abs_section_ptr) | |
3499 | { | |
3500 | /* Steal the link_sec pointer for our list. */ | |
3501 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) | |
3502 | /* This happens to make the list in reverse order, | |
07d72278 | 3503 | which we reverse later. */ |
906e58ca NC |
3504 | PREV_SEC (isec) = *list; |
3505 | *list = isec; | |
3506 | } | |
3507 | } | |
3508 | } | |
3509 | ||
3510 | /* See whether we can group stub sections together. Grouping stub | |
3511 | sections may result in fewer stubs. More importantly, we need to | |
07d72278 | 3512 | put all .init* and .fini* stubs at the end of the .init or |
906e58ca NC |
3513 | .fini output sections respectively, because glibc splits the |
3514 | _init and _fini functions into multiple parts. Putting a stub in | |
3515 | the middle of a function is not a good idea. */ | |
3516 | ||
3517 | static void | |
3518 | group_sections (struct elf32_arm_link_hash_table *htab, | |
3519 | bfd_size_type stub_group_size, | |
07d72278 | 3520 | bfd_boolean stubs_always_after_branch) |
906e58ca | 3521 | { |
07d72278 | 3522 | asection **list = htab->input_list; |
906e58ca NC |
3523 | |
3524 | do | |
3525 | { | |
3526 | asection *tail = *list; | |
07d72278 DJ |
3527 | asection *head; |
3528 | asection *tp; | |
906e58ca NC |
3529 | |
3530 | if (tail == bfd_abs_section_ptr) | |
3531 | continue; | |
3532 | ||
07d72278 DJ |
3533 | /* Reverse the list: we must avoid placing stubs at the |
3534 | beginning of the section because the beginning of the text | |
3535 | section may be required for an interrupt vector in bare metal | |
3536 | code. */ | |
3537 | #define NEXT_SEC PREV_SEC | |
3538 | head = tail; | |
3539 | tp = NULL; | |
3540 | for (;;) | |
3541 | { | |
3542 | asection *h = PREV_SEC (head); | |
3543 | NEXT_SEC (head) = tp; | |
3544 | if (h == NULL) | |
3545 | break; | |
3546 | tp = head; | |
3547 | head = h; | |
3548 | } | |
3549 | ||
3550 | while (head != NULL) | |
906e58ca NC |
3551 | { |
3552 | asection *curr; | |
07d72278 | 3553 | asection *next; |
906e58ca NC |
3554 | bfd_size_type total; |
3555 | ||
07d72278 DJ |
3556 | curr = head; |
3557 | total = head->size; | |
3558 | while ((next = NEXT_SEC (curr)) != NULL | |
3559 | && ((total += next->output_offset - curr->output_offset) | |
906e58ca | 3560 | < stub_group_size)) |
07d72278 | 3561 | curr = next; |
906e58ca | 3562 | |
07d72278 | 3563 | /* OK, the size from the start to the start of CURR is less |
906e58ca | 3564 | than stub_group_size and thus can be handled by one stub |
07d72278 | 3565 | section. (Or the head section is itself larger than |
906e58ca NC |
3566 | stub_group_size, in which case we may be toast.) |
3567 | We should really be keeping track of the total size of | |
3568 | stubs added here, as stubs contribute to the final output | |
7fb9f789 | 3569 | section size. */ |
906e58ca NC |
3570 | do |
3571 | { | |
07d72278 | 3572 | next = NEXT_SEC (head); |
906e58ca | 3573 | /* Set up this stub group. */ |
07d72278 | 3574 | htab->stub_group[head->id].link_sec = curr; |
906e58ca | 3575 | } |
07d72278 | 3576 | while (head != curr && (head = next) != NULL); |
906e58ca NC |
3577 | |
3578 | /* But wait, there's more! Input sections up to stub_group_size | |
07d72278 DJ |
3579 | bytes after the stub section can be handled by it too. */ |
3580 | if (!stubs_always_after_branch) | |
906e58ca NC |
3581 | { |
3582 | total = 0; | |
07d72278 DJ |
3583 | while (next != NULL |
3584 | && ((total += next->output_offset - head->output_offset) | |
906e58ca NC |
3585 | < stub_group_size)) |
3586 | { | |
07d72278 DJ |
3587 | head = next; |
3588 | next = NEXT_SEC (head); | |
3589 | htab->stub_group[head->id].link_sec = curr; | |
906e58ca NC |
3590 | } |
3591 | } | |
07d72278 | 3592 | head = next; |
906e58ca NC |
3593 | } |
3594 | } | |
07d72278 | 3595 | while (list++ != htab->input_list + htab->top_index); |
906e58ca NC |
3596 | |
3597 | free (htab->input_list); | |
3598 | #undef PREV_SEC | |
07d72278 | 3599 | #undef NEXT_SEC |
906e58ca NC |
3600 | } |
3601 | ||
3602 | /* Determine and set the size of the stub section for a final link. | |
3603 | ||
3604 | The basic idea here is to examine all the relocations looking for | |
3605 | PC-relative calls to a target that is unreachable with a "bl" | |
3606 | instruction. */ | |
3607 | ||
3608 | bfd_boolean | |
3609 | elf32_arm_size_stubs (bfd *output_bfd, | |
3610 | bfd *stub_bfd, | |
3611 | struct bfd_link_info *info, | |
3612 | bfd_signed_vma group_size, | |
3613 | asection * (*add_stub_section) (const char *, asection *), | |
3614 | void (*layout_sections_again) (void)) | |
3615 | { | |
3616 | bfd_size_type stub_group_size; | |
07d72278 | 3617 | bfd_boolean stubs_always_after_branch; |
906e58ca NC |
3618 | bfd_boolean stub_changed = 0; |
3619 | struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info); | |
3620 | ||
3621 | /* Propagate mach to stub bfd, because it may not have been | |
3622 | finalized when we created stub_bfd. */ | |
3623 | bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd), | |
3624 | bfd_get_mach (output_bfd)); | |
3625 | ||
3626 | /* Stash our params away. */ | |
3627 | htab->stub_bfd = stub_bfd; | |
3628 | htab->add_stub_section = add_stub_section; | |
3629 | htab->layout_sections_again = layout_sections_again; | |
07d72278 | 3630 | stubs_always_after_branch = group_size < 0; |
906e58ca NC |
3631 | if (group_size < 0) |
3632 | stub_group_size = -group_size; | |
3633 | else | |
3634 | stub_group_size = group_size; | |
3635 | ||
3636 | if (stub_group_size == 1) | |
3637 | { | |
3638 | /* Default values. */ | |
3639 | /* Thumb branch range is +-4MB has to be used as the default | |
3640 | maximum size (a given section can contain both ARM and Thumb | |
3641 | code, so the worst case has to be taken into account). | |
3642 | ||
3643 | This value is 24K less than that, which allows for 2025 | |
3644 | 12-byte stubs. If we exceed that, then we will fail to link. | |
3645 | The user will have to relink with an explicit group size | |
3646 | option. */ | |
3647 | stub_group_size = 4170000; | |
3648 | } | |
3649 | ||
07d72278 | 3650 | group_sections (htab, stub_group_size, stubs_always_after_branch); |
906e58ca NC |
3651 | |
3652 | while (1) | |
3653 | { | |
3654 | bfd *input_bfd; | |
3655 | unsigned int bfd_indx; | |
3656 | asection *stub_sec; | |
3657 | ||
3658 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
3659 | input_bfd != NULL; | |
3660 | input_bfd = input_bfd->link_next, bfd_indx++) | |
3661 | { | |
3662 | Elf_Internal_Shdr *symtab_hdr; | |
3663 | asection *section; | |
3664 | Elf_Internal_Sym *local_syms = NULL; | |
3665 | ||
3666 | /* We'll need the symbol table in a second. */ | |
3667 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
3668 | if (symtab_hdr->sh_info == 0) | |
3669 | continue; | |
3670 | ||
3671 | /* Walk over each section attached to the input bfd. */ | |
3672 | for (section = input_bfd->sections; | |
3673 | section != NULL; | |
3674 | section = section->next) | |
3675 | { | |
3676 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
3677 | ||
3678 | /* If there aren't any relocs, then there's nothing more | |
3679 | to do. */ | |
3680 | if ((section->flags & SEC_RELOC) == 0 | |
3681 | || section->reloc_count == 0 | |
3682 | || (section->flags & SEC_CODE) == 0) | |
3683 | continue; | |
3684 | ||
3685 | /* If this section is a link-once section that will be | |
3686 | discarded, then don't create any stubs. */ | |
3687 | if (section->output_section == NULL | |
3688 | || section->output_section->owner != output_bfd) | |
3689 | continue; | |
3690 | ||
3691 | /* Get the relocs. */ | |
3692 | internal_relocs | |
3693 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, | |
3694 | NULL, info->keep_memory); | |
3695 | if (internal_relocs == NULL) | |
3696 | goto error_ret_free_local; | |
3697 | ||
3698 | /* Now examine each relocation. */ | |
3699 | irela = internal_relocs; | |
3700 | irelaend = irela + section->reloc_count; | |
3701 | for (; irela < irelaend; irela++) | |
3702 | { | |
3703 | unsigned int r_type, r_indx; | |
3704 | enum elf32_arm_stub_type stub_type; | |
3705 | struct elf32_arm_stub_hash_entry *stub_entry; | |
3706 | asection *sym_sec; | |
3707 | bfd_vma sym_value; | |
3708 | bfd_vma destination; | |
3709 | struct elf32_arm_link_hash_entry *hash; | |
7413f23f | 3710 | const char *sym_name; |
906e58ca NC |
3711 | char *stub_name; |
3712 | const asection *id_sec; | |
3713 | unsigned char st_type; | |
3714 | ||
3715 | r_type = ELF32_R_TYPE (irela->r_info); | |
3716 | r_indx = ELF32_R_SYM (irela->r_info); | |
3717 | ||
3718 | if (r_type >= (unsigned int) R_ARM_max) | |
3719 | { | |
3720 | bfd_set_error (bfd_error_bad_value); | |
3721 | error_ret_free_internal: | |
3722 | if (elf_section_data (section)->relocs == NULL) | |
3723 | free (internal_relocs); | |
3724 | goto error_ret_free_local; | |
3725 | } | |
3726 | ||
3727 | /* Only look for stubs on call instructions. */ | |
3728 | if ((r_type != (unsigned int) R_ARM_CALL) | |
3729 | && (r_type != (unsigned int) R_ARM_THM_CALL)) | |
3730 | continue; | |
3731 | ||
3732 | /* Now determine the call target, its name, value, | |
3733 | section. */ | |
3734 | sym_sec = NULL; | |
3735 | sym_value = 0; | |
3736 | destination = 0; | |
3737 | hash = NULL; | |
7413f23f | 3738 | sym_name = NULL; |
906e58ca NC |
3739 | if (r_indx < symtab_hdr->sh_info) |
3740 | { | |
3741 | /* It's a local symbol. */ | |
3742 | Elf_Internal_Sym *sym; | |
3743 | Elf_Internal_Shdr *hdr; | |
3744 | ||
3745 | if (local_syms == NULL) | |
3746 | { | |
3747 | local_syms | |
3748 | = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3749 | if (local_syms == NULL) | |
3750 | local_syms | |
3751 | = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
3752 | symtab_hdr->sh_info, 0, | |
3753 | NULL, NULL, NULL); | |
3754 | if (local_syms == NULL) | |
3755 | goto error_ret_free_internal; | |
3756 | } | |
3757 | ||
3758 | sym = local_syms + r_indx; | |
3759 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
3760 | sym_sec = hdr->bfd_section; | |
3761 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
3762 | sym_value = sym->st_value; | |
3763 | destination = (sym_value + irela->r_addend | |
3764 | + sym_sec->output_offset | |
3765 | + sym_sec->output_section->vma); | |
3766 | st_type = ELF_ST_TYPE (sym->st_info); | |
7413f23f DJ |
3767 | sym_name |
3768 | = bfd_elf_string_from_elf_section (input_bfd, | |
3769 | symtab_hdr->sh_link, | |
3770 | sym->st_name); | |
906e58ca NC |
3771 | } |
3772 | else | |
3773 | { | |
3774 | /* It's an external symbol. */ | |
3775 | int e_indx; | |
3776 | ||
3777 | e_indx = r_indx - symtab_hdr->sh_info; | |
3778 | hash = ((struct elf32_arm_link_hash_entry *) | |
3779 | elf_sym_hashes (input_bfd)[e_indx]); | |
3780 | ||
3781 | while (hash->root.root.type == bfd_link_hash_indirect | |
3782 | || hash->root.root.type == bfd_link_hash_warning) | |
3783 | hash = ((struct elf32_arm_link_hash_entry *) | |
3784 | hash->root.root.u.i.link); | |
3785 | ||
3786 | if (hash->root.root.type == bfd_link_hash_defined | |
3787 | || hash->root.root.type == bfd_link_hash_defweak) | |
3788 | { | |
3789 | sym_sec = hash->root.root.u.def.section; | |
3790 | sym_value = hash->root.root.u.def.value; | |
3791 | if (sym_sec->output_section != NULL) | |
3792 | destination = (sym_value + irela->r_addend | |
3793 | + sym_sec->output_offset | |
3794 | + sym_sec->output_section->vma); | |
3795 | } | |
3796 | else if (hash->root.root.type == bfd_link_hash_undefweak | |
3797 | || hash->root.root.type == bfd_link_hash_undefined) | |
3798 | /* For a shared library, these will need a PLT stub, | |
3799 | which is treated separately. | |
3800 | For absolute code, they cannot be handled. */ | |
3801 | continue; | |
3802 | else | |
3803 | { | |
3804 | bfd_set_error (bfd_error_bad_value); | |
3805 | goto error_ret_free_internal; | |
3806 | } | |
3807 | st_type = ELF_ST_TYPE (hash->root.type); | |
7413f23f | 3808 | sym_name = hash->root.root.root.string; |
906e58ca NC |
3809 | } |
3810 | ||
3811 | /* Determine what (if any) linker stub is needed. */ | |
3812 | stub_type = arm_type_of_stub (info, section, irela, st_type, | |
c820be07 NC |
3813 | hash, destination, sym_sec, |
3814 | input_bfd, sym_name); | |
906e58ca NC |
3815 | if (stub_type == arm_stub_none) |
3816 | continue; | |
5e681ec4 | 3817 | |
906e58ca NC |
3818 | /* Support for grouping stub sections. */ |
3819 | id_sec = htab->stub_group[section->id].link_sec; | |
5e681ec4 | 3820 | |
906e58ca NC |
3821 | /* Get the name of this stub. */ |
3822 | stub_name = elf32_arm_stub_name (id_sec, sym_sec, hash, irela); | |
3823 | if (!stub_name) | |
3824 | goto error_ret_free_internal; | |
5e681ec4 | 3825 | |
906e58ca NC |
3826 | stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, |
3827 | stub_name, | |
3828 | FALSE, FALSE); | |
3829 | if (stub_entry != NULL) | |
3830 | { | |
3831 | /* The proper stub has already been created. */ | |
3832 | free (stub_name); | |
3833 | continue; | |
3834 | } | |
5e681ec4 | 3835 | |
da5938a2 | 3836 | stub_entry = elf32_arm_add_stub (stub_name, section, htab); |
906e58ca NC |
3837 | if (stub_entry == NULL) |
3838 | { | |
3839 | free (stub_name); | |
3840 | goto error_ret_free_internal; | |
3841 | } | |
5e681ec4 | 3842 | |
906e58ca NC |
3843 | stub_entry->target_value = sym_value; |
3844 | stub_entry->target_section = sym_sec; | |
3845 | stub_entry->stub_type = stub_type; | |
3846 | stub_entry->h = hash; | |
3847 | stub_entry->st_type = st_type; | |
7413f23f DJ |
3848 | |
3849 | if (sym_name == NULL) | |
3850 | sym_name = "unnamed"; | |
3851 | stub_entry->output_name | |
3852 | = bfd_alloc (htab->stub_bfd, | |
3853 | sizeof (THUMB2ARM_GLUE_ENTRY_NAME) | |
3854 | + strlen (sym_name)); | |
3855 | if (stub_entry->output_name == NULL) | |
3856 | { | |
3857 | free (stub_name); | |
3858 | goto error_ret_free_internal; | |
3859 | } | |
3860 | ||
3861 | /* For historical reasons, use the existing names for | |
3862 | ARM-to-Thumb and Thumb-to-ARM stubs. */ | |
3863 | if (r_type == (unsigned int) R_ARM_THM_CALL | |
3864 | && st_type != STT_ARM_TFUNC) | |
3865 | sprintf (stub_entry->output_name, THUMB2ARM_GLUE_ENTRY_NAME, | |
3866 | sym_name); | |
3867 | else if (r_type == (unsigned int) R_ARM_CALL | |
3868 | && st_type == STT_ARM_TFUNC) | |
3869 | sprintf (stub_entry->output_name, ARM2THUMB_GLUE_ENTRY_NAME, | |
3870 | sym_name); | |
3871 | else | |
3872 | sprintf (stub_entry->output_name, STUB_ENTRY_NAME, | |
3873 | sym_name); | |
3874 | ||
906e58ca NC |
3875 | stub_changed = TRUE; |
3876 | } | |
3877 | ||
3878 | /* We're done with the internal relocs, free them. */ | |
3879 | if (elf_section_data (section)->relocs == NULL) | |
3880 | free (internal_relocs); | |
5e681ec4 | 3881 | } |
5e681ec4 PB |
3882 | } |
3883 | ||
906e58ca NC |
3884 | if (!stub_changed) |
3885 | break; | |
5e681ec4 | 3886 | |
906e58ca NC |
3887 | /* OK, we've added some stubs. Find out the new size of the |
3888 | stub sections. */ | |
3889 | for (stub_sec = htab->stub_bfd->sections; | |
3890 | stub_sec != NULL; | |
3891 | stub_sec = stub_sec->next) | |
3892 | stub_sec->size = 0; | |
b34b2d70 | 3893 | |
906e58ca NC |
3894 | bfd_hash_traverse (&htab->stub_hash_table, arm_size_one_stub, htab); |
3895 | ||
3896 | /* Ask the linker to do its stuff. */ | |
3897 | (*htab->layout_sections_again) (); | |
3898 | stub_changed = FALSE; | |
ba93b8ac DJ |
3899 | } |
3900 | ||
906e58ca NC |
3901 | return TRUE; |
3902 | ||
3903 | error_ret_free_local: | |
3904 | return FALSE; | |
5e681ec4 PB |
3905 | } |
3906 | ||
906e58ca NC |
3907 | /* Build all the stubs associated with the current output file. The |
3908 | stubs are kept in a hash table attached to the main linker hash | |
3909 | table. We also set up the .plt entries for statically linked PIC | |
3910 | functions here. This function is called via arm_elf_finish in the | |
3911 | linker. */ | |
252b5132 | 3912 | |
906e58ca NC |
3913 | bfd_boolean |
3914 | elf32_arm_build_stubs (struct bfd_link_info *info) | |
252b5132 | 3915 | { |
906e58ca NC |
3916 | asection *stub_sec; |
3917 | struct bfd_hash_table *table; | |
3918 | struct elf32_arm_link_hash_table *htab; | |
252b5132 | 3919 | |
906e58ca | 3920 | htab = elf32_arm_hash_table (info); |
252b5132 | 3921 | |
906e58ca NC |
3922 | for (stub_sec = htab->stub_bfd->sections; |
3923 | stub_sec != NULL; | |
3924 | stub_sec = stub_sec->next) | |
252b5132 | 3925 | { |
906e58ca NC |
3926 | bfd_size_type size; |
3927 | ||
8029a119 | 3928 | /* Ignore non-stub sections. */ |
906e58ca NC |
3929 | if (!strstr (stub_sec->name, STUB_SUFFIX)) |
3930 | continue; | |
3931 | ||
3932 | /* Allocate memory to hold the linker stubs. */ | |
3933 | size = stub_sec->size; | |
3934 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, size); | |
3935 | if (stub_sec->contents == NULL && size != 0) | |
3936 | return FALSE; | |
3937 | stub_sec->size = 0; | |
252b5132 RH |
3938 | } |
3939 | ||
906e58ca NC |
3940 | /* Build the stubs as directed by the stub hash table. */ |
3941 | table = &htab->stub_hash_table; | |
3942 | bfd_hash_traverse (table, arm_build_one_stub, info); | |
252b5132 | 3943 | |
906e58ca | 3944 | return TRUE; |
252b5132 RH |
3945 | } |
3946 | ||
9b485d32 NC |
3947 | /* Locate the Thumb encoded calling stub for NAME. */ |
3948 | ||
252b5132 | 3949 | static struct elf_link_hash_entry * |
57e8b36a NC |
3950 | find_thumb_glue (struct bfd_link_info *link_info, |
3951 | const char *name, | |
f2a9dd69 | 3952 | char **error_message) |
252b5132 RH |
3953 | { |
3954 | char *tmp_name; | |
3955 | struct elf_link_hash_entry *hash; | |
3956 | struct elf32_arm_link_hash_table *hash_table; | |
3957 | ||
3958 | /* We need a pointer to the armelf specific hash table. */ | |
3959 | hash_table = elf32_arm_hash_table (link_info); | |
3960 | ||
57e8b36a NC |
3961 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
3962 | + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1); | |
252b5132 RH |
3963 | |
3964 | BFD_ASSERT (tmp_name); | |
3965 | ||
3966 | sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); | |
3967 | ||
3968 | hash = elf_link_hash_lookup | |
b34976b6 | 3969 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 | 3970 | |
b1657152 AM |
3971 | if (hash == NULL |
3972 | && asprintf (error_message, _("unable to find THUMB glue '%s' for '%s'"), | |
3973 | tmp_name, name) == -1) | |
3974 | *error_message = (char *) bfd_errmsg (bfd_error_system_call); | |
252b5132 RH |
3975 | |
3976 | free (tmp_name); | |
3977 | ||
3978 | return hash; | |
3979 | } | |
3980 | ||
9b485d32 NC |
3981 | /* Locate the ARM encoded calling stub for NAME. */ |
3982 | ||
252b5132 | 3983 | static struct elf_link_hash_entry * |
57e8b36a NC |
3984 | find_arm_glue (struct bfd_link_info *link_info, |
3985 | const char *name, | |
f2a9dd69 | 3986 | char **error_message) |
252b5132 RH |
3987 | { |
3988 | char *tmp_name; | |
3989 | struct elf_link_hash_entry *myh; | |
3990 | struct elf32_arm_link_hash_table *hash_table; | |
3991 | ||
3992 | /* We need a pointer to the elfarm specific hash table. */ | |
3993 | hash_table = elf32_arm_hash_table (link_info); | |
3994 | ||
57e8b36a NC |
3995 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
3996 | + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1); | |
252b5132 RH |
3997 | |
3998 | BFD_ASSERT (tmp_name); | |
3999 | ||
4000 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); | |
4001 | ||
4002 | myh = elf_link_hash_lookup | |
b34976b6 | 4003 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 | 4004 | |
b1657152 AM |
4005 | if (myh == NULL |
4006 | && asprintf (error_message, _("unable to find ARM glue '%s' for '%s'"), | |
4007 | tmp_name, name) == -1) | |
4008 | *error_message = (char *) bfd_errmsg (bfd_error_system_call); | |
252b5132 RH |
4009 | |
4010 | free (tmp_name); | |
4011 | ||
4012 | return myh; | |
4013 | } | |
4014 | ||
8f6277f5 | 4015 | /* ARM->Thumb glue (static images): |
252b5132 RH |
4016 | |
4017 | .arm | |
4018 | __func_from_arm: | |
4019 | ldr r12, __func_addr | |
4020 | bx r12 | |
4021 | __func_addr: | |
906e58ca | 4022 | .word func @ behave as if you saw a ARM_32 reloc. |
252b5132 | 4023 | |
26079076 PB |
4024 | (v5t static images) |
4025 | .arm | |
4026 | __func_from_arm: | |
4027 | ldr pc, __func_addr | |
4028 | __func_addr: | |
906e58ca | 4029 | .word func @ behave as if you saw a ARM_32 reloc. |
26079076 | 4030 | |
8f6277f5 PB |
4031 | (relocatable images) |
4032 | .arm | |
4033 | __func_from_arm: | |
4034 | ldr r12, __func_offset | |
4035 | add r12, r12, pc | |
4036 | bx r12 | |
4037 | __func_offset: | |
8029a119 | 4038 | .word func - . */ |
8f6277f5 PB |
4039 | |
4040 | #define ARM2THUMB_STATIC_GLUE_SIZE 12 | |
252b5132 RH |
4041 | static const insn32 a2t1_ldr_insn = 0xe59fc000; |
4042 | static const insn32 a2t2_bx_r12_insn = 0xe12fff1c; | |
4043 | static const insn32 a2t3_func_addr_insn = 0x00000001; | |
4044 | ||
26079076 PB |
4045 | #define ARM2THUMB_V5_STATIC_GLUE_SIZE 8 |
4046 | static const insn32 a2t1v5_ldr_insn = 0xe51ff004; | |
4047 | static const insn32 a2t2v5_func_addr_insn = 0x00000001; | |
4048 | ||
8f6277f5 PB |
4049 | #define ARM2THUMB_PIC_GLUE_SIZE 16 |
4050 | static const insn32 a2t1p_ldr_insn = 0xe59fc004; | |
4051 | static const insn32 a2t2p_add_pc_insn = 0xe08cc00f; | |
4052 | static const insn32 a2t3p_bx_r12_insn = 0xe12fff1c; | |
4053 | ||
9b485d32 | 4054 | /* Thumb->ARM: Thumb->(non-interworking aware) ARM |
252b5132 | 4055 | |
8029a119 NC |
4056 | .thumb .thumb |
4057 | .align 2 .align 2 | |
4058 | __func_from_thumb: __func_from_thumb: | |
4059 | bx pc push {r6, lr} | |
4060 | nop ldr r6, __func_addr | |
4061 | .arm mov lr, pc | |
4062 | b func bx r6 | |
fcef9eb7 NC |
4063 | .arm |
4064 | ;; back_to_thumb | |
4065 | ldmia r13! {r6, lr} | |
4066 | bx lr | |
8029a119 NC |
4067 | __func_addr: |
4068 | .word func */ | |
252b5132 RH |
4069 | |
4070 | #define THUMB2ARM_GLUE_SIZE 8 | |
4071 | static const insn16 t2a1_bx_pc_insn = 0x4778; | |
4072 | static const insn16 t2a2_noop_insn = 0x46c0; | |
4073 | static const insn32 t2a3_b_insn = 0xea000000; | |
4074 | ||
c7b8f16e JB |
4075 | #define VFP11_ERRATUM_VENEER_SIZE 8 |
4076 | ||
845b51d6 PB |
4077 | #define ARM_BX_VENEER_SIZE 12 |
4078 | static const insn32 armbx1_tst_insn = 0xe3100001; | |
4079 | static const insn32 armbx2_moveq_insn = 0x01a0f000; | |
4080 | static const insn32 armbx3_bx_insn = 0xe12fff10; | |
4081 | ||
7e392df6 | 4082 | #ifndef ELFARM_NABI_C_INCLUDED |
8029a119 NC |
4083 | static void |
4084 | arm_allocate_glue_section_space (bfd * abfd, bfd_size_type size, const char * name) | |
252b5132 RH |
4085 | { |
4086 | asection * s; | |
8029a119 | 4087 | bfd_byte * contents; |
252b5132 | 4088 | |
8029a119 NC |
4089 | if (size == 0) |
4090 | return; | |
252b5132 | 4091 | |
8029a119 | 4092 | BFD_ASSERT (abfd != NULL); |
252b5132 | 4093 | |
8029a119 NC |
4094 | s = bfd_get_section_by_name (abfd, name); |
4095 | BFD_ASSERT (s != NULL); | |
252b5132 | 4096 | |
8029a119 | 4097 | contents = bfd_alloc (abfd, size); |
252b5132 | 4098 | |
8029a119 NC |
4099 | BFD_ASSERT (s->size == size); |
4100 | s->contents = contents; | |
4101 | } | |
906e58ca | 4102 | |
8029a119 NC |
4103 | bfd_boolean |
4104 | bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info * info) | |
4105 | { | |
4106 | struct elf32_arm_link_hash_table * globals; | |
906e58ca | 4107 | |
8029a119 NC |
4108 | globals = elf32_arm_hash_table (info); |
4109 | BFD_ASSERT (globals != NULL); | |
906e58ca | 4110 | |
8029a119 NC |
4111 | arm_allocate_glue_section_space (globals->bfd_of_glue_owner, |
4112 | globals->arm_glue_size, | |
4113 | ARM2THUMB_GLUE_SECTION_NAME); | |
906e58ca | 4114 | |
8029a119 NC |
4115 | arm_allocate_glue_section_space (globals->bfd_of_glue_owner, |
4116 | globals->thumb_glue_size, | |
4117 | THUMB2ARM_GLUE_SECTION_NAME); | |
252b5132 | 4118 | |
8029a119 NC |
4119 | arm_allocate_glue_section_space (globals->bfd_of_glue_owner, |
4120 | globals->vfp11_erratum_glue_size, | |
4121 | VFP11_ERRATUM_VENEER_SECTION_NAME); | |
845b51d6 | 4122 | |
8029a119 NC |
4123 | arm_allocate_glue_section_space (globals->bfd_of_glue_owner, |
4124 | globals->bx_glue_size, | |
845b51d6 PB |
4125 | ARM_BX_GLUE_SECTION_NAME); |
4126 | ||
b34976b6 | 4127 | return TRUE; |
252b5132 RH |
4128 | } |
4129 | ||
a4fd1a8e | 4130 | /* Allocate space and symbols for calling a Thumb function from Arm mode. |
906e58ca NC |
4131 | returns the symbol identifying the stub. */ |
4132 | ||
a4fd1a8e | 4133 | static struct elf_link_hash_entry * |
57e8b36a NC |
4134 | record_arm_to_thumb_glue (struct bfd_link_info * link_info, |
4135 | struct elf_link_hash_entry * h) | |
252b5132 RH |
4136 | { |
4137 | const char * name = h->root.root.string; | |
63b0f745 | 4138 | asection * s; |
252b5132 RH |
4139 | char * tmp_name; |
4140 | struct elf_link_hash_entry * myh; | |
14a793b2 | 4141 | struct bfd_link_hash_entry * bh; |
252b5132 | 4142 | struct elf32_arm_link_hash_table * globals; |
dc810e39 | 4143 | bfd_vma val; |
2f475487 | 4144 | bfd_size_type size; |
252b5132 RH |
4145 | |
4146 | globals = elf32_arm_hash_table (link_info); | |
4147 | ||
4148 | BFD_ASSERT (globals != NULL); | |
4149 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
4150 | ||
4151 | s = bfd_get_section_by_name | |
4152 | (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME); | |
4153 | ||
252b5132 RH |
4154 | BFD_ASSERT (s != NULL); |
4155 | ||
57e8b36a | 4156 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1); |
252b5132 RH |
4157 | |
4158 | BFD_ASSERT (tmp_name); | |
4159 | ||
4160 | sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); | |
4161 | ||
4162 | myh = elf_link_hash_lookup | |
b34976b6 | 4163 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 RH |
4164 | |
4165 | if (myh != NULL) | |
4166 | { | |
9b485d32 | 4167 | /* We've already seen this guy. */ |
252b5132 | 4168 | free (tmp_name); |
a4fd1a8e | 4169 | return myh; |
252b5132 RH |
4170 | } |
4171 | ||
57e8b36a NC |
4172 | /* The only trick here is using hash_table->arm_glue_size as the value. |
4173 | Even though the section isn't allocated yet, this is where we will be | |
3dccd7b7 DJ |
4174 | putting it. The +1 on the value marks that the stub has not been |
4175 | output yet - not that it is a Thumb function. */ | |
14a793b2 | 4176 | bh = NULL; |
dc810e39 AM |
4177 | val = globals->arm_glue_size + 1; |
4178 | _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner, | |
4179 | tmp_name, BSF_GLOBAL, s, val, | |
b34976b6 | 4180 | NULL, TRUE, FALSE, &bh); |
252b5132 | 4181 | |
b7693d02 DJ |
4182 | myh = (struct elf_link_hash_entry *) bh; |
4183 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
4184 | myh->forced_local = 1; | |
4185 | ||
252b5132 RH |
4186 | free (tmp_name); |
4187 | ||
27e55c4d PB |
4188 | if (link_info->shared || globals->root.is_relocatable_executable |
4189 | || globals->pic_veneer) | |
2f475487 | 4190 | size = ARM2THUMB_PIC_GLUE_SIZE; |
26079076 PB |
4191 | else if (globals->use_blx) |
4192 | size = ARM2THUMB_V5_STATIC_GLUE_SIZE; | |
8f6277f5 | 4193 | else |
2f475487 AM |
4194 | size = ARM2THUMB_STATIC_GLUE_SIZE; |
4195 | ||
4196 | s->size += size; | |
4197 | globals->arm_glue_size += size; | |
252b5132 | 4198 | |
a4fd1a8e | 4199 | return myh; |
252b5132 RH |
4200 | } |
4201 | ||
4202 | static void | |
57e8b36a NC |
4203 | record_thumb_to_arm_glue (struct bfd_link_info *link_info, |
4204 | struct elf_link_hash_entry *h) | |
252b5132 RH |
4205 | { |
4206 | const char *name = h->root.root.string; | |
63b0f745 | 4207 | asection *s; |
252b5132 RH |
4208 | char *tmp_name; |
4209 | struct elf_link_hash_entry *myh; | |
14a793b2 | 4210 | struct bfd_link_hash_entry *bh; |
252b5132 | 4211 | struct elf32_arm_link_hash_table *hash_table; |
dc810e39 | 4212 | bfd_vma val; |
252b5132 RH |
4213 | |
4214 | hash_table = elf32_arm_hash_table (link_info); | |
4215 | ||
4216 | BFD_ASSERT (hash_table != NULL); | |
4217 | BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL); | |
4218 | ||
4219 | s = bfd_get_section_by_name | |
4220 | (hash_table->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME); | |
4221 | ||
4222 | BFD_ASSERT (s != NULL); | |
4223 | ||
57e8b36a NC |
4224 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
4225 | + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1); | |
252b5132 RH |
4226 | |
4227 | BFD_ASSERT (tmp_name); | |
4228 | ||
4229 | sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); | |
4230 | ||
4231 | myh = elf_link_hash_lookup | |
b34976b6 | 4232 | (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); |
252b5132 RH |
4233 | |
4234 | if (myh != NULL) | |
4235 | { | |
9b485d32 | 4236 | /* We've already seen this guy. */ |
252b5132 | 4237 | free (tmp_name); |
9b485d32 | 4238 | return; |
252b5132 RH |
4239 | } |
4240 | ||
3dccd7b7 DJ |
4241 | /* The only trick here is using hash_table->thumb_glue_size as the value. |
4242 | Even though the section isn't allocated yet, this is where we will be | |
4243 | putting it. The +1 on the value marks that the stub has not been | |
4244 | output yet - not that it is a Thumb function. */ | |
14a793b2 | 4245 | bh = NULL; |
dc810e39 AM |
4246 | val = hash_table->thumb_glue_size + 1; |
4247 | _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, | |
4248 | tmp_name, BSF_GLOBAL, s, val, | |
b34976b6 | 4249 | NULL, TRUE, FALSE, &bh); |
252b5132 | 4250 | |
9b485d32 | 4251 | /* If we mark it 'Thumb', the disassembler will do a better job. */ |
14a793b2 | 4252 | myh = (struct elf_link_hash_entry *) bh; |
b7693d02 DJ |
4253 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC); |
4254 | myh->forced_local = 1; | |
252b5132 RH |
4255 | |
4256 | free (tmp_name); | |
4257 | ||
252b5132 RH |
4258 | #define CHANGE_TO_ARM "__%s_change_to_arm" |
4259 | #define BACK_FROM_ARM "__%s_back_from_arm" | |
4260 | ||
9b485d32 | 4261 | /* Allocate another symbol to mark where we switch to Arm mode. */ |
57e8b36a NC |
4262 | tmp_name = bfd_malloc ((bfd_size_type) strlen (name) |
4263 | + strlen (CHANGE_TO_ARM) + 1); | |
252b5132 RH |
4264 | |
4265 | BFD_ASSERT (tmp_name); | |
4266 | ||
4267 | sprintf (tmp_name, CHANGE_TO_ARM, name); | |
4268 | ||
14a793b2 | 4269 | bh = NULL; |
dc810e39 AM |
4270 | val = hash_table->thumb_glue_size + 4, |
4271 | _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, | |
4272 | tmp_name, BSF_LOCAL, s, val, | |
b34976b6 | 4273 | NULL, TRUE, FALSE, &bh); |
252b5132 RH |
4274 | |
4275 | free (tmp_name); | |
4276 | ||
2f475487 | 4277 | s->size += THUMB2ARM_GLUE_SIZE; |
252b5132 | 4278 | hash_table->thumb_glue_size += THUMB2ARM_GLUE_SIZE; |
252b5132 RH |
4279 | } |
4280 | ||
c7b8f16e | 4281 | |
845b51d6 PB |
4282 | /* Allocate space for ARMv4 BX veneers. */ |
4283 | ||
4284 | static void | |
4285 | record_arm_bx_glue (struct bfd_link_info * link_info, int reg) | |
4286 | { | |
4287 | asection * s; | |
4288 | struct elf32_arm_link_hash_table *globals; | |
4289 | char *tmp_name; | |
4290 | struct elf_link_hash_entry *myh; | |
4291 | struct bfd_link_hash_entry *bh; | |
4292 | bfd_vma val; | |
4293 | ||
4294 | /* BX PC does not need a veneer. */ | |
4295 | if (reg == 15) | |
4296 | return; | |
4297 | ||
4298 | globals = elf32_arm_hash_table (link_info); | |
4299 | ||
4300 | BFD_ASSERT (globals != NULL); | |
4301 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
4302 | ||
4303 | /* Check if this veneer has already been allocated. */ | |
4304 | if (globals->bx_glue_offset[reg]) | |
4305 | return; | |
4306 | ||
4307 | s = bfd_get_section_by_name | |
4308 | (globals->bfd_of_glue_owner, ARM_BX_GLUE_SECTION_NAME); | |
4309 | ||
4310 | BFD_ASSERT (s != NULL); | |
4311 | ||
4312 | /* Add symbol for veneer. */ | |
4313 | tmp_name = bfd_malloc ((bfd_size_type) strlen (ARM_BX_GLUE_ENTRY_NAME) + 1); | |
906e58ca | 4314 | |
845b51d6 | 4315 | BFD_ASSERT (tmp_name); |
906e58ca | 4316 | |
845b51d6 | 4317 | sprintf (tmp_name, ARM_BX_GLUE_ENTRY_NAME, reg); |
906e58ca | 4318 | |
845b51d6 PB |
4319 | myh = elf_link_hash_lookup |
4320 | (&(globals)->root, tmp_name, FALSE, FALSE, FALSE); | |
906e58ca | 4321 | |
845b51d6 | 4322 | BFD_ASSERT (myh == NULL); |
906e58ca | 4323 | |
845b51d6 PB |
4324 | bh = NULL; |
4325 | val = globals->bx_glue_size; | |
4326 | _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner, | |
4327 | tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val, | |
4328 | NULL, TRUE, FALSE, &bh); | |
4329 | ||
4330 | myh = (struct elf_link_hash_entry *) bh; | |
4331 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
4332 | myh->forced_local = 1; | |
4333 | ||
4334 | s->size += ARM_BX_VENEER_SIZE; | |
4335 | globals->bx_glue_offset[reg] = globals->bx_glue_size | 2; | |
4336 | globals->bx_glue_size += ARM_BX_VENEER_SIZE; | |
4337 | } | |
4338 | ||
4339 | ||
c7b8f16e JB |
4340 | /* Add an entry to the code/data map for section SEC. */ |
4341 | ||
4342 | static void | |
4343 | elf32_arm_section_map_add (asection *sec, char type, bfd_vma vma) | |
4344 | { | |
4345 | struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec); | |
4346 | unsigned int newidx; | |
906e58ca | 4347 | |
c7b8f16e JB |
4348 | if (sec_data->map == NULL) |
4349 | { | |
4350 | sec_data->map = bfd_malloc (sizeof (elf32_arm_section_map)); | |
4351 | sec_data->mapcount = 0; | |
4352 | sec_data->mapsize = 1; | |
4353 | } | |
906e58ca | 4354 | |
c7b8f16e | 4355 | newidx = sec_data->mapcount++; |
906e58ca | 4356 | |
c7b8f16e JB |
4357 | if (sec_data->mapcount > sec_data->mapsize) |
4358 | { | |
4359 | sec_data->mapsize *= 2; | |
515ef31d NC |
4360 | sec_data->map = bfd_realloc_or_free (sec_data->map, sec_data->mapsize |
4361 | * sizeof (elf32_arm_section_map)); | |
4362 | } | |
4363 | ||
4364 | if (sec_data->map) | |
4365 | { | |
4366 | sec_data->map[newidx].vma = vma; | |
4367 | sec_data->map[newidx].type = type; | |
c7b8f16e | 4368 | } |
c7b8f16e JB |
4369 | } |
4370 | ||
4371 | ||
4372 | /* Record information about a VFP11 denorm-erratum veneer. Only ARM-mode | |
4373 | veneers are handled for now. */ | |
4374 | ||
4375 | static bfd_vma | |
4376 | record_vfp11_erratum_veneer (struct bfd_link_info *link_info, | |
4377 | elf32_vfp11_erratum_list *branch, | |
4378 | bfd *branch_bfd, | |
4379 | asection *branch_sec, | |
4380 | unsigned int offset) | |
4381 | { | |
4382 | asection *s; | |
4383 | struct elf32_arm_link_hash_table *hash_table; | |
4384 | char *tmp_name; | |
4385 | struct elf_link_hash_entry *myh; | |
4386 | struct bfd_link_hash_entry *bh; | |
4387 | bfd_vma val; | |
4388 | struct _arm_elf_section_data *sec_data; | |
4389 | int errcount; | |
4390 | elf32_vfp11_erratum_list *newerr; | |
906e58ca | 4391 | |
c7b8f16e | 4392 | hash_table = elf32_arm_hash_table (link_info); |
906e58ca | 4393 | |
c7b8f16e JB |
4394 | BFD_ASSERT (hash_table != NULL); |
4395 | BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL); | |
906e58ca | 4396 | |
c7b8f16e JB |
4397 | s = bfd_get_section_by_name |
4398 | (hash_table->bfd_of_glue_owner, VFP11_ERRATUM_VENEER_SECTION_NAME); | |
906e58ca | 4399 | |
c7b8f16e | 4400 | sec_data = elf32_arm_section_data (s); |
906e58ca | 4401 | |
c7b8f16e | 4402 | BFD_ASSERT (s != NULL); |
906e58ca | 4403 | |
c7b8f16e JB |
4404 | tmp_name = bfd_malloc ((bfd_size_type) strlen |
4405 | (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10); | |
906e58ca | 4406 | |
c7b8f16e | 4407 | BFD_ASSERT (tmp_name); |
906e58ca | 4408 | |
c7b8f16e JB |
4409 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME, |
4410 | hash_table->num_vfp11_fixes); | |
906e58ca | 4411 | |
c7b8f16e JB |
4412 | myh = elf_link_hash_lookup |
4413 | (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE); | |
906e58ca | 4414 | |
c7b8f16e | 4415 | BFD_ASSERT (myh == NULL); |
906e58ca | 4416 | |
c7b8f16e JB |
4417 | bh = NULL; |
4418 | val = hash_table->vfp11_erratum_glue_size; | |
4419 | _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, | |
4420 | tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val, | |
4421 | NULL, TRUE, FALSE, &bh); | |
4422 | ||
4423 | myh = (struct elf_link_hash_entry *) bh; | |
4424 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
4425 | myh->forced_local = 1; | |
4426 | ||
4427 | /* Link veneer back to calling location. */ | |
4428 | errcount = ++(sec_data->erratumcount); | |
4429 | newerr = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list)); | |
906e58ca | 4430 | |
c7b8f16e JB |
4431 | newerr->type = VFP11_ERRATUM_ARM_VENEER; |
4432 | newerr->vma = -1; | |
4433 | newerr->u.v.branch = branch; | |
4434 | newerr->u.v.id = hash_table->num_vfp11_fixes; | |
4435 | branch->u.b.veneer = newerr; | |
4436 | ||
4437 | newerr->next = sec_data->erratumlist; | |
4438 | sec_data->erratumlist = newerr; | |
4439 | ||
4440 | /* A symbol for the return from the veneer. */ | |
4441 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r", | |
4442 | hash_table->num_vfp11_fixes); | |
4443 | ||
4444 | myh = elf_link_hash_lookup | |
4445 | (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE); | |
906e58ca | 4446 | |
c7b8f16e JB |
4447 | if (myh != NULL) |
4448 | abort (); | |
4449 | ||
4450 | bh = NULL; | |
4451 | val = offset + 4; | |
4452 | _bfd_generic_link_add_one_symbol (link_info, branch_bfd, tmp_name, BSF_LOCAL, | |
4453 | branch_sec, val, NULL, TRUE, FALSE, &bh); | |
906e58ca | 4454 | |
c7b8f16e JB |
4455 | myh = (struct elf_link_hash_entry *) bh; |
4456 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
4457 | myh->forced_local = 1; | |
4458 | ||
4459 | free (tmp_name); | |
906e58ca | 4460 | |
c7b8f16e JB |
4461 | /* Generate a mapping symbol for the veneer section, and explicitly add an |
4462 | entry for that symbol to the code/data map for the section. */ | |
4463 | if (hash_table->vfp11_erratum_glue_size == 0) | |
4464 | { | |
4465 | bh = NULL; | |
4466 | /* FIXME: Creates an ARM symbol. Thumb mode will need attention if it | |
4467 | ever requires this erratum fix. */ | |
4468 | _bfd_generic_link_add_one_symbol (link_info, | |
4469 | hash_table->bfd_of_glue_owner, "$a", | |
4470 | BSF_LOCAL, s, 0, NULL, | |
4471 | TRUE, FALSE, &bh); | |
4472 | ||
4473 | myh = (struct elf_link_hash_entry *) bh; | |
4474 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
4475 | myh->forced_local = 1; | |
906e58ca | 4476 | |
c7b8f16e JB |
4477 | /* The elf32_arm_init_maps function only cares about symbols from input |
4478 | BFDs. We must make a note of this generated mapping symbol | |
4479 | ourselves so that code byteswapping works properly in | |
4480 | elf32_arm_write_section. */ | |
4481 | elf32_arm_section_map_add (s, 'a', 0); | |
4482 | } | |
906e58ca | 4483 | |
c7b8f16e JB |
4484 | s->size += VFP11_ERRATUM_VENEER_SIZE; |
4485 | hash_table->vfp11_erratum_glue_size += VFP11_ERRATUM_VENEER_SIZE; | |
4486 | hash_table->num_vfp11_fixes++; | |
906e58ca | 4487 | |
c7b8f16e JB |
4488 | /* The offset of the veneer. */ |
4489 | return val; | |
4490 | } | |
4491 | ||
8029a119 NC |
4492 | /* Note: we do not include the flag SEC_LINKER_CREATED, as that |
4493 | would prevent elf_link_input_bfd() from processing the contents | |
4494 | of the section. */ | |
4495 | #define ARM_GLUE_SECTION_FLAGS \ | |
4496 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_CODE | SEC_READONLY) | |
4497 | ||
4498 | /* Create a fake section for use by the ARM backend of the linker. */ | |
4499 | ||
4500 | static bfd_boolean | |
4501 | arm_make_glue_section (bfd * abfd, const char * name) | |
4502 | { | |
4503 | asection * sec; | |
4504 | ||
4505 | sec = bfd_get_section_by_name (abfd, name); | |
4506 | if (sec != NULL) | |
4507 | /* Already made. */ | |
4508 | return TRUE; | |
4509 | ||
4510 | sec = bfd_make_section_with_flags (abfd, name, ARM_GLUE_SECTION_FLAGS); | |
4511 | ||
4512 | if (sec == NULL | |
4513 | || !bfd_set_section_alignment (abfd, sec, 2)) | |
4514 | return FALSE; | |
4515 | ||
4516 | /* Set the gc mark to prevent the section from being removed by garbage | |
4517 | collection, despite the fact that no relocs refer to this section. */ | |
4518 | sec->gc_mark = 1; | |
4519 | ||
4520 | return TRUE; | |
4521 | } | |
4522 | ||
8afb0e02 NC |
4523 | /* Add the glue sections to ABFD. This function is called from the |
4524 | linker scripts in ld/emultempl/{armelf}.em. */ | |
9b485d32 | 4525 | |
b34976b6 | 4526 | bfd_boolean |
57e8b36a NC |
4527 | bfd_elf32_arm_add_glue_sections_to_bfd (bfd *abfd, |
4528 | struct bfd_link_info *info) | |
252b5132 | 4529 | { |
8afb0e02 NC |
4530 | /* If we are only performing a partial |
4531 | link do not bother adding the glue. */ | |
1049f94e | 4532 | if (info->relocatable) |
b34976b6 | 4533 | return TRUE; |
252b5132 | 4534 | |
8029a119 | 4535 | /* Linker stubs don't need glue. */ |
906e58ca NC |
4536 | if (!strcmp (abfd->filename, "linker stubs")) |
4537 | return TRUE; | |
4538 | ||
8029a119 NC |
4539 | return arm_make_glue_section (abfd, ARM2THUMB_GLUE_SECTION_NAME) |
4540 | && arm_make_glue_section (abfd, THUMB2ARM_GLUE_SECTION_NAME) | |
4541 | && arm_make_glue_section (abfd, VFP11_ERRATUM_VENEER_SECTION_NAME) | |
4542 | && arm_make_glue_section (abfd, ARM_BX_GLUE_SECTION_NAME); | |
8afb0e02 NC |
4543 | } |
4544 | ||
4545 | /* Select a BFD to be used to hold the sections used by the glue code. | |
4546 | This function is called from the linker scripts in ld/emultempl/ | |
8029a119 | 4547 | {armelf/pe}.em. */ |
8afb0e02 | 4548 | |
b34976b6 | 4549 | bfd_boolean |
57e8b36a | 4550 | bfd_elf32_arm_get_bfd_for_interworking (bfd *abfd, struct bfd_link_info *info) |
8afb0e02 NC |
4551 | { |
4552 | struct elf32_arm_link_hash_table *globals; | |
4553 | ||
4554 | /* If we are only performing a partial link | |
4555 | do not bother getting a bfd to hold the glue. */ | |
1049f94e | 4556 | if (info->relocatable) |
b34976b6 | 4557 | return TRUE; |
8afb0e02 | 4558 | |
b7693d02 DJ |
4559 | /* Make sure we don't attach the glue sections to a dynamic object. */ |
4560 | BFD_ASSERT (!(abfd->flags & DYNAMIC)); | |
4561 | ||
8afb0e02 NC |
4562 | globals = elf32_arm_hash_table (info); |
4563 | ||
4564 | BFD_ASSERT (globals != NULL); | |
4565 | ||
4566 | if (globals->bfd_of_glue_owner != NULL) | |
b34976b6 | 4567 | return TRUE; |
8afb0e02 | 4568 | |
252b5132 RH |
4569 | /* Save the bfd for later use. */ |
4570 | globals->bfd_of_glue_owner = abfd; | |
cedb70c5 | 4571 | |
b34976b6 | 4572 | return TRUE; |
252b5132 RH |
4573 | } |
4574 | ||
906e58ca NC |
4575 | static void |
4576 | check_use_blx (struct elf32_arm_link_hash_table *globals) | |
39b41c9c | 4577 | { |
104d59d1 JM |
4578 | if (bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC, |
4579 | Tag_CPU_arch) > 2) | |
39b41c9c PB |
4580 | globals->use_blx = 1; |
4581 | } | |
4582 | ||
b34976b6 | 4583 | bfd_boolean |
57e8b36a | 4584 | bfd_elf32_arm_process_before_allocation (bfd *abfd, |
d504ffc8 | 4585 | struct bfd_link_info *link_info) |
252b5132 RH |
4586 | { |
4587 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 4588 | Elf_Internal_Rela *internal_relocs = NULL; |
252b5132 RH |
4589 | Elf_Internal_Rela *irel, *irelend; |
4590 | bfd_byte *contents = NULL; | |
252b5132 RH |
4591 | |
4592 | asection *sec; | |
4593 | struct elf32_arm_link_hash_table *globals; | |
4594 | ||
4595 | /* If we are only performing a partial link do not bother | |
4596 | to construct any glue. */ | |
1049f94e | 4597 | if (link_info->relocatable) |
b34976b6 | 4598 | return TRUE; |
252b5132 | 4599 | |
39ce1a6a NC |
4600 | /* Here we have a bfd that is to be included on the link. We have a |
4601 | hook to do reloc rummaging, before section sizes are nailed down. */ | |
252b5132 RH |
4602 | globals = elf32_arm_hash_table (link_info); |
4603 | ||
4604 | BFD_ASSERT (globals != NULL); | |
39ce1a6a NC |
4605 | |
4606 | check_use_blx (globals); | |
252b5132 | 4607 | |
d504ffc8 | 4608 | if (globals->byteswap_code && !bfd_big_endian (abfd)) |
e489d0ae | 4609 | { |
d003868e AM |
4610 | _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."), |
4611 | abfd); | |
e489d0ae PB |
4612 | return FALSE; |
4613 | } | |
f21f3fe0 | 4614 | |
39ce1a6a NC |
4615 | /* PR 5398: If we have not decided to include any loadable sections in |
4616 | the output then we will not have a glue owner bfd. This is OK, it | |
4617 | just means that there is nothing else for us to do here. */ | |
4618 | if (globals->bfd_of_glue_owner == NULL) | |
4619 | return TRUE; | |
4620 | ||
252b5132 RH |
4621 | /* Rummage around all the relocs and map the glue vectors. */ |
4622 | sec = abfd->sections; | |
4623 | ||
4624 | if (sec == NULL) | |
b34976b6 | 4625 | return TRUE; |
252b5132 RH |
4626 | |
4627 | for (; sec != NULL; sec = sec->next) | |
4628 | { | |
4629 | if (sec->reloc_count == 0) | |
4630 | continue; | |
4631 | ||
2f475487 AM |
4632 | if ((sec->flags & SEC_EXCLUDE) != 0) |
4633 | continue; | |
4634 | ||
0ffa91dd | 4635 | symtab_hdr = & elf_symtab_hdr (abfd); |
252b5132 | 4636 | |
9b485d32 | 4637 | /* Load the relocs. */ |
6cdc0ccc | 4638 | internal_relocs |
906e58ca | 4639 | = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, FALSE); |
252b5132 | 4640 | |
6cdc0ccc AM |
4641 | if (internal_relocs == NULL) |
4642 | goto error_return; | |
252b5132 | 4643 | |
6cdc0ccc AM |
4644 | irelend = internal_relocs + sec->reloc_count; |
4645 | for (irel = internal_relocs; irel < irelend; irel++) | |
252b5132 RH |
4646 | { |
4647 | long r_type; | |
4648 | unsigned long r_index; | |
252b5132 RH |
4649 | |
4650 | struct elf_link_hash_entry *h; | |
4651 | ||
4652 | r_type = ELF32_R_TYPE (irel->r_info); | |
4653 | r_index = ELF32_R_SYM (irel->r_info); | |
4654 | ||
9b485d32 | 4655 | /* These are the only relocation types we care about. */ |
ba96a88f | 4656 | if ( r_type != R_ARM_PC24 |
b7693d02 | 4657 | && r_type != R_ARM_PLT32 |
5b5bb741 | 4658 | && r_type != R_ARM_JUMP24 |
845b51d6 PB |
4659 | && r_type != R_ARM_THM_JUMP24 |
4660 | && (r_type != R_ARM_V4BX || globals->fix_v4bx < 2)) | |
252b5132 RH |
4661 | continue; |
4662 | ||
4663 | /* Get the section contents if we haven't done so already. */ | |
4664 | if (contents == NULL) | |
4665 | { | |
4666 | /* Get cached copy if it exists. */ | |
4667 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
4668 | contents = elf_section_data (sec)->this_hdr.contents; | |
4669 | else | |
4670 | { | |
4671 | /* Go get them off disk. */ | |
57e8b36a | 4672 | if (! bfd_malloc_and_get_section (abfd, sec, &contents)) |
252b5132 RH |
4673 | goto error_return; |
4674 | } | |
4675 | } | |
4676 | ||
845b51d6 PB |
4677 | if (r_type == R_ARM_V4BX) |
4678 | { | |
4679 | int reg; | |
4680 | ||
4681 | reg = bfd_get_32 (abfd, contents + irel->r_offset) & 0xf; | |
4682 | record_arm_bx_glue (link_info, reg); | |
4683 | continue; | |
4684 | } | |
4685 | ||
a7c10850 | 4686 | /* If the relocation is not against a symbol it cannot concern us. */ |
252b5132 RH |
4687 | h = NULL; |
4688 | ||
9b485d32 | 4689 | /* We don't care about local symbols. */ |
252b5132 RH |
4690 | if (r_index < symtab_hdr->sh_info) |
4691 | continue; | |
4692 | ||
9b485d32 | 4693 | /* This is an external symbol. */ |
252b5132 RH |
4694 | r_index -= symtab_hdr->sh_info; |
4695 | h = (struct elf_link_hash_entry *) | |
4696 | elf_sym_hashes (abfd)[r_index]; | |
4697 | ||
4698 | /* If the relocation is against a static symbol it must be within | |
4699 | the current section and so cannot be a cross ARM/Thumb relocation. */ | |
4700 | if (h == NULL) | |
4701 | continue; | |
4702 | ||
d504ffc8 DJ |
4703 | /* If the call will go through a PLT entry then we do not need |
4704 | glue. */ | |
4705 | if (globals->splt != NULL && h->plt.offset != (bfd_vma) -1) | |
b7693d02 DJ |
4706 | continue; |
4707 | ||
252b5132 RH |
4708 | switch (r_type) |
4709 | { | |
4710 | case R_ARM_PC24: | |
c6596c5e | 4711 | case R_ARM_PLT32: |
5b5bb741 | 4712 | case R_ARM_JUMP24: |
252b5132 | 4713 | /* This one is a call from arm code. We need to look up |
2f0ca46a | 4714 | the target of the call. If it is a thumb target, we |
252b5132 | 4715 | insert glue. */ |
ebe24dd4 | 4716 | if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC) |
252b5132 RH |
4717 | record_arm_to_thumb_glue (link_info, h); |
4718 | break; | |
4719 | ||
bd97cb95 | 4720 | case R_ARM_THM_JUMP24: |
f21f3fe0 | 4721 | /* This one is a call from thumb code. We look |
2f0ca46a | 4722 | up the target of the call. If it is not a thumb |
bcbdc74c | 4723 | target, we insert glue. */ |
bd97cb95 DJ |
4724 | if (ELF_ST_TYPE (h->type) != STT_ARM_TFUNC |
4725 | && !(globals->use_blx && r_type == R_ARM_THM_CALL) | |
5ab79981 | 4726 | && h->root.type != bfd_link_hash_undefweak) |
252b5132 RH |
4727 | record_thumb_to_arm_glue (link_info, h); |
4728 | break; | |
4729 | ||
4730 | default: | |
c6596c5e | 4731 | abort (); |
252b5132 RH |
4732 | } |
4733 | } | |
6cdc0ccc AM |
4734 | |
4735 | if (contents != NULL | |
4736 | && elf_section_data (sec)->this_hdr.contents != contents) | |
4737 | free (contents); | |
4738 | contents = NULL; | |
4739 | ||
4740 | if (internal_relocs != NULL | |
4741 | && elf_section_data (sec)->relocs != internal_relocs) | |
4742 | free (internal_relocs); | |
4743 | internal_relocs = NULL; | |
252b5132 RH |
4744 | } |
4745 | ||
b34976b6 | 4746 | return TRUE; |
9a5aca8c | 4747 | |
252b5132 | 4748 | error_return: |
6cdc0ccc AM |
4749 | if (contents != NULL |
4750 | && elf_section_data (sec)->this_hdr.contents != contents) | |
4751 | free (contents); | |
4752 | if (internal_relocs != NULL | |
4753 | && elf_section_data (sec)->relocs != internal_relocs) | |
4754 | free (internal_relocs); | |
9a5aca8c | 4755 | |
b34976b6 | 4756 | return FALSE; |
252b5132 | 4757 | } |
7e392df6 | 4758 | #endif |
252b5132 | 4759 | |
eb043451 | 4760 | |
c7b8f16e JB |
4761 | /* Initialise maps of ARM/Thumb/data for input BFDs. */ |
4762 | ||
4763 | void | |
4764 | bfd_elf32_arm_init_maps (bfd *abfd) | |
4765 | { | |
4766 | Elf_Internal_Sym *isymbuf; | |
4767 | Elf_Internal_Shdr *hdr; | |
4768 | unsigned int i, localsyms; | |
4769 | ||
af1f4419 NC |
4770 | /* PR 7093: Make sure that we are dealing with an arm elf binary. */ |
4771 | if (! is_arm_elf (abfd)) | |
4772 | return; | |
4773 | ||
c7b8f16e JB |
4774 | if ((abfd->flags & DYNAMIC) != 0) |
4775 | return; | |
4776 | ||
0ffa91dd | 4777 | hdr = & elf_symtab_hdr (abfd); |
c7b8f16e JB |
4778 | localsyms = hdr->sh_info; |
4779 | ||
4780 | /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field | |
4781 | should contain the number of local symbols, which should come before any | |
4782 | global symbols. Mapping symbols are always local. */ | |
4783 | isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, | |
4784 | NULL); | |
4785 | ||
4786 | /* No internal symbols read? Skip this BFD. */ | |
4787 | if (isymbuf == NULL) | |
4788 | return; | |
4789 | ||
4790 | for (i = 0; i < localsyms; i++) | |
4791 | { | |
4792 | Elf_Internal_Sym *isym = &isymbuf[i]; | |
4793 | asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
4794 | const char *name; | |
906e58ca | 4795 | |
c7b8f16e JB |
4796 | if (sec != NULL |
4797 | && ELF_ST_BIND (isym->st_info) == STB_LOCAL) | |
4798 | { | |
4799 | name = bfd_elf_string_from_elf_section (abfd, | |
4800 | hdr->sh_link, isym->st_name); | |
906e58ca | 4801 | |
c7b8f16e JB |
4802 | if (bfd_is_arm_special_symbol_name (name, |
4803 | BFD_ARM_SPECIAL_SYM_TYPE_MAP)) | |
4804 | elf32_arm_section_map_add (sec, name[1], isym->st_value); | |
4805 | } | |
4806 | } | |
4807 | } | |
4808 | ||
4809 | ||
4810 | void | |
4811 | bfd_elf32_arm_set_vfp11_fix (bfd *obfd, struct bfd_link_info *link_info) | |
4812 | { | |
4813 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); | |
104d59d1 | 4814 | obj_attribute *out_attr = elf_known_obj_attributes_proc (obfd); |
906e58ca | 4815 | |
c7b8f16e JB |
4816 | /* We assume that ARMv7+ does not need the VFP11 denorm erratum fix. */ |
4817 | if (out_attr[Tag_CPU_arch].i >= TAG_CPU_ARCH_V7) | |
4818 | { | |
4819 | switch (globals->vfp11_fix) | |
4820 | { | |
4821 | case BFD_ARM_VFP11_FIX_DEFAULT: | |
4822 | case BFD_ARM_VFP11_FIX_NONE: | |
4823 | globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE; | |
4824 | break; | |
906e58ca | 4825 | |
c7b8f16e JB |
4826 | default: |
4827 | /* Give a warning, but do as the user requests anyway. */ | |
4828 | (*_bfd_error_handler) (_("%B: warning: selected VFP11 erratum " | |
4829 | "workaround is not necessary for target architecture"), obfd); | |
4830 | } | |
4831 | } | |
4832 | else if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_DEFAULT) | |
4833 | /* For earlier architectures, we might need the workaround, but do not | |
4834 | enable it by default. If users is running with broken hardware, they | |
4835 | must enable the erratum fix explicitly. */ | |
4836 | globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE; | |
4837 | } | |
4838 | ||
4839 | ||
906e58ca NC |
4840 | enum bfd_arm_vfp11_pipe |
4841 | { | |
c7b8f16e JB |
4842 | VFP11_FMAC, |
4843 | VFP11_LS, | |
4844 | VFP11_DS, | |
4845 | VFP11_BAD | |
4846 | }; | |
4847 | ||
4848 | /* Return a VFP register number. This is encoded as RX:X for single-precision | |
4849 | registers, or X:RX for double-precision registers, where RX is the group of | |
4850 | four bits in the instruction encoding and X is the single extension bit. | |
4851 | RX and X fields are specified using their lowest (starting) bit. The return | |
4852 | value is: | |
4853 | ||
4854 | 0...31: single-precision registers s0...s31 | |
4855 | 32...63: double-precision registers d0...d31. | |
906e58ca | 4856 | |
c7b8f16e JB |
4857 | Although X should be zero for VFP11 (encoding d0...d15 only), we might |
4858 | encounter VFP3 instructions, so we allow the full range for DP registers. */ | |
906e58ca | 4859 | |
c7b8f16e JB |
4860 | static unsigned int |
4861 | bfd_arm_vfp11_regno (unsigned int insn, bfd_boolean is_double, unsigned int rx, | |
4862 | unsigned int x) | |
4863 | { | |
4864 | if (is_double) | |
4865 | return (((insn >> rx) & 0xf) | (((insn >> x) & 1) << 4)) + 32; | |
4866 | else | |
4867 | return (((insn >> rx) & 0xf) << 1) | ((insn >> x) & 1); | |
4868 | } | |
4869 | ||
4870 | /* Set bits in *WMASK according to a register number REG as encoded by | |
4871 | bfd_arm_vfp11_regno(). Ignore d16-d31. */ | |
4872 | ||
4873 | static void | |
4874 | bfd_arm_vfp11_write_mask (unsigned int *wmask, unsigned int reg) | |
4875 | { | |
4876 | if (reg < 32) | |
4877 | *wmask |= 1 << reg; | |
4878 | else if (reg < 48) | |
4879 | *wmask |= 3 << ((reg - 32) * 2); | |
4880 | } | |
4881 | ||
4882 | /* Return TRUE if WMASK overwrites anything in REGS. */ | |
4883 | ||
4884 | static bfd_boolean | |
4885 | bfd_arm_vfp11_antidependency (unsigned int wmask, int *regs, int numregs) | |
4886 | { | |
4887 | int i; | |
906e58ca | 4888 | |
c7b8f16e JB |
4889 | for (i = 0; i < numregs; i++) |
4890 | { | |
4891 | unsigned int reg = regs[i]; | |
4892 | ||
4893 | if (reg < 32 && (wmask & (1 << reg)) != 0) | |
4894 | return TRUE; | |
906e58ca | 4895 | |
c7b8f16e JB |
4896 | reg -= 32; |
4897 | ||
4898 | if (reg >= 16) | |
4899 | continue; | |
906e58ca | 4900 | |
c7b8f16e JB |
4901 | if ((wmask & (3 << (reg * 2))) != 0) |
4902 | return TRUE; | |
4903 | } | |
906e58ca | 4904 | |
c7b8f16e JB |
4905 | return FALSE; |
4906 | } | |
4907 | ||
4908 | /* In this function, we're interested in two things: finding input registers | |
4909 | for VFP data-processing instructions, and finding the set of registers which | |
4910 | arbitrary VFP instructions may write to. We use a 32-bit unsigned int to | |
4911 | hold the written set, so FLDM etc. are easy to deal with (we're only | |
4912 | interested in 32 SP registers or 16 dp registers, due to the VFP version | |
4913 | implemented by the chip in question). DP registers are marked by setting | |
4914 | both SP registers in the write mask). */ | |
4915 | ||
4916 | static enum bfd_arm_vfp11_pipe | |
4917 | bfd_arm_vfp11_insn_decode (unsigned int insn, unsigned int *destmask, int *regs, | |
4918 | int *numregs) | |
4919 | { | |
4920 | enum bfd_arm_vfp11_pipe pipe = VFP11_BAD; | |
4921 | bfd_boolean is_double = ((insn & 0xf00) == 0xb00) ? 1 : 0; | |
4922 | ||
4923 | if ((insn & 0x0f000e10) == 0x0e000a00) /* A data-processing insn. */ | |
4924 | { | |
4925 | unsigned int pqrs; | |
4926 | unsigned int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22); | |
4927 | unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5); | |
4928 | ||
4929 | pqrs = ((insn & 0x00800000) >> 20) | |
4930 | | ((insn & 0x00300000) >> 19) | |
4931 | | ((insn & 0x00000040) >> 6); | |
4932 | ||
4933 | switch (pqrs) | |
4934 | { | |
4935 | case 0: /* fmac[sd]. */ | |
4936 | case 1: /* fnmac[sd]. */ | |
4937 | case 2: /* fmsc[sd]. */ | |
4938 | case 3: /* fnmsc[sd]. */ | |
4939 | pipe = VFP11_FMAC; | |
4940 | bfd_arm_vfp11_write_mask (destmask, fd); | |
4941 | regs[0] = fd; | |
4942 | regs[1] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */ | |
4943 | regs[2] = fm; | |
4944 | *numregs = 3; | |
4945 | break; | |
4946 | ||
4947 | case 4: /* fmul[sd]. */ | |
4948 | case 5: /* fnmul[sd]. */ | |
4949 | case 6: /* fadd[sd]. */ | |
4950 | case 7: /* fsub[sd]. */ | |
4951 | pipe = VFP11_FMAC; | |
4952 | goto vfp_binop; | |
4953 | ||
4954 | case 8: /* fdiv[sd]. */ | |
4955 | pipe = VFP11_DS; | |
4956 | vfp_binop: | |
4957 | bfd_arm_vfp11_write_mask (destmask, fd); | |
4958 | regs[0] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */ | |
4959 | regs[1] = fm; | |
4960 | *numregs = 2; | |
4961 | break; | |
4962 | ||
4963 | case 15: /* extended opcode. */ | |
4964 | { | |
4965 | unsigned int extn = ((insn >> 15) & 0x1e) | |
4966 | | ((insn >> 7) & 1); | |
4967 | ||
4968 | switch (extn) | |
4969 | { | |
4970 | case 0: /* fcpy[sd]. */ | |
4971 | case 1: /* fabs[sd]. */ | |
4972 | case 2: /* fneg[sd]. */ | |
4973 | case 8: /* fcmp[sd]. */ | |
4974 | case 9: /* fcmpe[sd]. */ | |
4975 | case 10: /* fcmpz[sd]. */ | |
4976 | case 11: /* fcmpez[sd]. */ | |
4977 | case 16: /* fuito[sd]. */ | |
4978 | case 17: /* fsito[sd]. */ | |
4979 | case 24: /* ftoui[sd]. */ | |
4980 | case 25: /* ftouiz[sd]. */ | |
4981 | case 26: /* ftosi[sd]. */ | |
4982 | case 27: /* ftosiz[sd]. */ | |
4983 | /* These instructions will not bounce due to underflow. */ | |
4984 | *numregs = 0; | |
4985 | pipe = VFP11_FMAC; | |
4986 | break; | |
4987 | ||
4988 | case 3: /* fsqrt[sd]. */ | |
4989 | /* fsqrt cannot underflow, but it can (perhaps) overwrite | |
4990 | registers to cause the erratum in previous instructions. */ | |
4991 | bfd_arm_vfp11_write_mask (destmask, fd); | |
4992 | pipe = VFP11_DS; | |
4993 | break; | |
4994 | ||
4995 | case 15: /* fcvt{ds,sd}. */ | |
4996 | { | |
4997 | int rnum = 0; | |
4998 | ||
4999 | bfd_arm_vfp11_write_mask (destmask, fd); | |
5000 | ||
5001 | /* Only FCVTSD can underflow. */ | |
5002 | if ((insn & 0x100) != 0) | |
5003 | regs[rnum++] = fm; | |
5004 | ||
5005 | *numregs = rnum; | |
5006 | ||
5007 | pipe = VFP11_FMAC; | |
5008 | } | |
5009 | break; | |
5010 | ||
5011 | default: | |
5012 | return VFP11_BAD; | |
5013 | } | |
5014 | } | |
5015 | break; | |
5016 | ||
5017 | default: | |
5018 | return VFP11_BAD; | |
5019 | } | |
5020 | } | |
5021 | /* Two-register transfer. */ | |
5022 | else if ((insn & 0x0fe00ed0) == 0x0c400a10) | |
5023 | { | |
5024 | unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5); | |
906e58ca | 5025 | |
c7b8f16e JB |
5026 | if ((insn & 0x100000) == 0) |
5027 | { | |
5028 | if (is_double) | |
5029 | bfd_arm_vfp11_write_mask (destmask, fm); | |
5030 | else | |
5031 | { | |
5032 | bfd_arm_vfp11_write_mask (destmask, fm); | |
5033 | bfd_arm_vfp11_write_mask (destmask, fm + 1); | |
5034 | } | |
5035 | } | |
5036 | ||
5037 | pipe = VFP11_LS; | |
5038 | } | |
5039 | else if ((insn & 0x0e100e00) == 0x0c100a00) /* A load insn. */ | |
5040 | { | |
5041 | int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22); | |
5042 | unsigned int puw = ((insn >> 21) & 0x1) | (((insn >> 23) & 3) << 1); | |
906e58ca | 5043 | |
c7b8f16e JB |
5044 | switch (puw) |
5045 | { | |
5046 | case 0: /* Two-reg transfer. We should catch these above. */ | |
5047 | abort (); | |
906e58ca | 5048 | |
c7b8f16e JB |
5049 | case 2: /* fldm[sdx]. */ |
5050 | case 3: | |
5051 | case 5: | |
5052 | { | |
5053 | unsigned int i, offset = insn & 0xff; | |
5054 | ||
5055 | if (is_double) | |
5056 | offset >>= 1; | |
5057 | ||
5058 | for (i = fd; i < fd + offset; i++) | |
5059 | bfd_arm_vfp11_write_mask (destmask, i); | |
5060 | } | |
5061 | break; | |
906e58ca | 5062 | |
c7b8f16e JB |
5063 | case 4: /* fld[sd]. */ |
5064 | case 6: | |
5065 | bfd_arm_vfp11_write_mask (destmask, fd); | |
5066 | break; | |
906e58ca | 5067 | |
c7b8f16e JB |
5068 | default: |
5069 | return VFP11_BAD; | |
5070 | } | |
5071 | ||
5072 | pipe = VFP11_LS; | |
5073 | } | |
5074 | /* Single-register transfer. Note L==0. */ | |
5075 | else if ((insn & 0x0f100e10) == 0x0e000a10) | |
5076 | { | |
5077 | unsigned int opcode = (insn >> 21) & 7; | |
5078 | unsigned int fn = bfd_arm_vfp11_regno (insn, is_double, 16, 7); | |
5079 | ||
5080 | switch (opcode) | |
5081 | { | |
5082 | case 0: /* fmsr/fmdlr. */ | |
5083 | case 1: /* fmdhr. */ | |
5084 | /* Mark fmdhr and fmdlr as writing to the whole of the DP | |
5085 | destination register. I don't know if this is exactly right, | |
5086 | but it is the conservative choice. */ | |
5087 | bfd_arm_vfp11_write_mask (destmask, fn); | |
5088 | break; | |
5089 | ||
5090 | case 7: /* fmxr. */ | |
5091 | break; | |
5092 | } | |
5093 | ||
5094 | pipe = VFP11_LS; | |
5095 | } | |
5096 | ||
5097 | return pipe; | |
5098 | } | |
5099 | ||
5100 | ||
5101 | static int elf32_arm_compare_mapping (const void * a, const void * b); | |
5102 | ||
5103 | ||
5104 | /* Look for potentially-troublesome code sequences which might trigger the | |
5105 | VFP11 denormal/antidependency erratum. See, e.g., the ARM1136 errata sheet | |
5106 | (available from ARM) for details of the erratum. A short version is | |
5107 | described in ld.texinfo. */ | |
5108 | ||
5109 | bfd_boolean | |
5110 | bfd_elf32_arm_vfp11_erratum_scan (bfd *abfd, struct bfd_link_info *link_info) | |
5111 | { | |
5112 | asection *sec; | |
5113 | bfd_byte *contents = NULL; | |
5114 | int state = 0; | |
5115 | int regs[3], numregs = 0; | |
5116 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); | |
5117 | int use_vector = (globals->vfp11_fix == BFD_ARM_VFP11_FIX_VECTOR); | |
906e58ca | 5118 | |
c7b8f16e JB |
5119 | /* We use a simple FSM to match troublesome VFP11 instruction sequences. |
5120 | The states transition as follows: | |
906e58ca | 5121 | |
c7b8f16e JB |
5122 | 0 -> 1 (vector) or 0 -> 2 (scalar) |
5123 | A VFP FMAC-pipeline instruction has been seen. Fill | |
5124 | regs[0]..regs[numregs-1] with its input operands. Remember this | |
5125 | instruction in 'first_fmac'. | |
5126 | ||
5127 | 1 -> 2 | |
5128 | Any instruction, except for a VFP instruction which overwrites | |
5129 | regs[*]. | |
906e58ca | 5130 | |
c7b8f16e JB |
5131 | 1 -> 3 [ -> 0 ] or |
5132 | 2 -> 3 [ -> 0 ] | |
5133 | A VFP instruction has been seen which overwrites any of regs[*]. | |
5134 | We must make a veneer! Reset state to 0 before examining next | |
5135 | instruction. | |
906e58ca | 5136 | |
c7b8f16e JB |
5137 | 2 -> 0 |
5138 | If we fail to match anything in state 2, reset to state 0 and reset | |
5139 | the instruction pointer to the instruction after 'first_fmac'. | |
5140 | ||
5141 | If the VFP11 vector mode is in use, there must be at least two unrelated | |
5142 | instructions between anti-dependent VFP11 instructions to properly avoid | |
906e58ca | 5143 | triggering the erratum, hence the use of the extra state 1. */ |
c7b8f16e JB |
5144 | |
5145 | /* If we are only performing a partial link do not bother | |
5146 | to construct any glue. */ | |
5147 | if (link_info->relocatable) | |
5148 | return TRUE; | |
5149 | ||
0ffa91dd NC |
5150 | /* Skip if this bfd does not correspond to an ELF image. */ |
5151 | if (! is_arm_elf (abfd)) | |
5152 | return TRUE; | |
906e58ca | 5153 | |
c7b8f16e JB |
5154 | /* We should have chosen a fix type by the time we get here. */ |
5155 | BFD_ASSERT (globals->vfp11_fix != BFD_ARM_VFP11_FIX_DEFAULT); | |
5156 | ||
5157 | if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_NONE) | |
5158 | return TRUE; | |
2e6030b9 | 5159 | |
33a7ffc2 JM |
5160 | /* Skip this BFD if it corresponds to an executable or dynamic object. */ |
5161 | if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0) | |
5162 | return TRUE; | |
5163 | ||
c7b8f16e JB |
5164 | for (sec = abfd->sections; sec != NULL; sec = sec->next) |
5165 | { | |
5166 | unsigned int i, span, first_fmac = 0, veneer_of_insn = 0; | |
5167 | struct _arm_elf_section_data *sec_data; | |
5168 | ||
5169 | /* If we don't have executable progbits, we're not interested in this | |
5170 | section. Also skip if section is to be excluded. */ | |
5171 | if (elf_section_type (sec) != SHT_PROGBITS | |
5172 | || (elf_section_flags (sec) & SHF_EXECINSTR) == 0 | |
5173 | || (sec->flags & SEC_EXCLUDE) != 0 | |
33a7ffc2 JM |
5174 | || sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS |
5175 | || sec->output_section == bfd_abs_section_ptr | |
c7b8f16e JB |
5176 | || strcmp (sec->name, VFP11_ERRATUM_VENEER_SECTION_NAME) == 0) |
5177 | continue; | |
5178 | ||
5179 | sec_data = elf32_arm_section_data (sec); | |
906e58ca | 5180 | |
c7b8f16e JB |
5181 | if (sec_data->mapcount == 0) |
5182 | continue; | |
906e58ca | 5183 | |
c7b8f16e JB |
5184 | if (elf_section_data (sec)->this_hdr.contents != NULL) |
5185 | contents = elf_section_data (sec)->this_hdr.contents; | |
5186 | else if (! bfd_malloc_and_get_section (abfd, sec, &contents)) | |
5187 | goto error_return; | |
5188 | ||
5189 | qsort (sec_data->map, sec_data->mapcount, sizeof (elf32_arm_section_map), | |
5190 | elf32_arm_compare_mapping); | |
5191 | ||
5192 | for (span = 0; span < sec_data->mapcount; span++) | |
5193 | { | |
5194 | unsigned int span_start = sec_data->map[span].vma; | |
5195 | unsigned int span_end = (span == sec_data->mapcount - 1) | |
5196 | ? sec->size : sec_data->map[span + 1].vma; | |
5197 | char span_type = sec_data->map[span].type; | |
906e58ca | 5198 | |
c7b8f16e JB |
5199 | /* FIXME: Only ARM mode is supported at present. We may need to |
5200 | support Thumb-2 mode also at some point. */ | |
5201 | if (span_type != 'a') | |
5202 | continue; | |
5203 | ||
5204 | for (i = span_start; i < span_end;) | |
5205 | { | |
5206 | unsigned int next_i = i + 4; | |
5207 | unsigned int insn = bfd_big_endian (abfd) | |
5208 | ? (contents[i] << 24) | |
5209 | | (contents[i + 1] << 16) | |
5210 | | (contents[i + 2] << 8) | |
5211 | | contents[i + 3] | |
5212 | : (contents[i + 3] << 24) | |
5213 | | (contents[i + 2] << 16) | |
5214 | | (contents[i + 1] << 8) | |
5215 | | contents[i]; | |
5216 | unsigned int writemask = 0; | |
5217 | enum bfd_arm_vfp11_pipe pipe; | |
5218 | ||
5219 | switch (state) | |
5220 | { | |
5221 | case 0: | |
5222 | pipe = bfd_arm_vfp11_insn_decode (insn, &writemask, regs, | |
5223 | &numregs); | |
5224 | /* I'm assuming the VFP11 erratum can trigger with denorm | |
5225 | operands on either the FMAC or the DS pipeline. This might | |
5226 | lead to slightly overenthusiastic veneer insertion. */ | |
5227 | if (pipe == VFP11_FMAC || pipe == VFP11_DS) | |
5228 | { | |
5229 | state = use_vector ? 1 : 2; | |
5230 | first_fmac = i; | |
5231 | veneer_of_insn = insn; | |
5232 | } | |
5233 | break; | |
5234 | ||
5235 | case 1: | |
5236 | { | |
5237 | int other_regs[3], other_numregs; | |
5238 | pipe = bfd_arm_vfp11_insn_decode (insn, &writemask, | |
5239 | other_regs, | |
5240 | &other_numregs); | |
5241 | if (pipe != VFP11_BAD | |
5242 | && bfd_arm_vfp11_antidependency (writemask, regs, | |
5243 | numregs)) | |
5244 | state = 3; | |
5245 | else | |
5246 | state = 2; | |
5247 | } | |
5248 | break; | |
5249 | ||
5250 | case 2: | |
5251 | { | |
5252 | int other_regs[3], other_numregs; | |
5253 | pipe = bfd_arm_vfp11_insn_decode (insn, &writemask, | |
5254 | other_regs, | |
5255 | &other_numregs); | |
5256 | if (pipe != VFP11_BAD | |
5257 | && bfd_arm_vfp11_antidependency (writemask, regs, | |
5258 | numregs)) | |
5259 | state = 3; | |
5260 | else | |
5261 | { | |
5262 | state = 0; | |
5263 | next_i = first_fmac + 4; | |
5264 | } | |
5265 | } | |
5266 | break; | |
5267 | ||
5268 | case 3: | |
5269 | abort (); /* Should be unreachable. */ | |
5270 | } | |
5271 | ||
5272 | if (state == 3) | |
5273 | { | |
5274 | elf32_vfp11_erratum_list *newerr | |
5275 | = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list)); | |
5276 | int errcount; | |
5277 | ||
5278 | errcount = ++(elf32_arm_section_data (sec)->erratumcount); | |
5279 | ||
5280 | newerr->u.b.vfp_insn = veneer_of_insn; | |
5281 | ||
5282 | switch (span_type) | |
5283 | { | |
5284 | case 'a': | |
5285 | newerr->type = VFP11_ERRATUM_BRANCH_TO_ARM_VENEER; | |
5286 | break; | |
906e58ca | 5287 | |
c7b8f16e JB |
5288 | default: |
5289 | abort (); | |
5290 | } | |
5291 | ||
5292 | record_vfp11_erratum_veneer (link_info, newerr, abfd, sec, | |
5293 | first_fmac); | |
5294 | ||
5295 | newerr->vma = -1; | |
5296 | ||
5297 | newerr->next = sec_data->erratumlist; | |
5298 | sec_data->erratumlist = newerr; | |
5299 | ||
5300 | state = 0; | |
5301 | } | |
5302 | ||
5303 | i = next_i; | |
5304 | } | |
5305 | } | |
906e58ca | 5306 | |
c7b8f16e JB |
5307 | if (contents != NULL |
5308 | && elf_section_data (sec)->this_hdr.contents != contents) | |
5309 | free (contents); | |
5310 | contents = NULL; | |
5311 | } | |
5312 | ||
5313 | return TRUE; | |
5314 | ||
5315 | error_return: | |
5316 | if (contents != NULL | |
5317 | && elf_section_data (sec)->this_hdr.contents != contents) | |
5318 | free (contents); | |
906e58ca | 5319 | |
c7b8f16e JB |
5320 | return FALSE; |
5321 | } | |
5322 | ||
5323 | /* Find virtual-memory addresses for VFP11 erratum veneers and return locations | |
5324 | after sections have been laid out, using specially-named symbols. */ | |
5325 | ||
5326 | void | |
5327 | bfd_elf32_arm_vfp11_fix_veneer_locations (bfd *abfd, | |
5328 | struct bfd_link_info *link_info) | |
5329 | { | |
5330 | asection *sec; | |
5331 | struct elf32_arm_link_hash_table *globals; | |
5332 | char *tmp_name; | |
906e58ca | 5333 | |
c7b8f16e JB |
5334 | if (link_info->relocatable) |
5335 | return; | |
2e6030b9 MS |
5336 | |
5337 | /* Skip if this bfd does not correspond to an ELF image. */ | |
0ffa91dd | 5338 | if (! is_arm_elf (abfd)) |
2e6030b9 MS |
5339 | return; |
5340 | ||
c7b8f16e | 5341 | globals = elf32_arm_hash_table (link_info); |
906e58ca | 5342 | |
c7b8f16e JB |
5343 | tmp_name = bfd_malloc ((bfd_size_type) strlen |
5344 | (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10); | |
5345 | ||
5346 | for (sec = abfd->sections; sec != NULL; sec = sec->next) | |
5347 | { | |
5348 | struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec); | |
5349 | elf32_vfp11_erratum_list *errnode = sec_data->erratumlist; | |
906e58ca | 5350 | |
c7b8f16e JB |
5351 | for (; errnode != NULL; errnode = errnode->next) |
5352 | { | |
5353 | struct elf_link_hash_entry *myh; | |
5354 | bfd_vma vma; | |
5355 | ||
5356 | switch (errnode->type) | |
5357 | { | |
5358 | case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER: | |
5359 | case VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER: | |
5360 | /* Find veneer symbol. */ | |
5361 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME, | |
5362 | errnode->u.b.veneer->u.v.id); | |
5363 | ||
5364 | myh = elf_link_hash_lookup | |
5365 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); | |
5366 | ||
5367 | if (myh == NULL) | |
5368 | (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer " | |
5369 | "`%s'"), abfd, tmp_name); | |
5370 | ||
5371 | vma = myh->root.u.def.section->output_section->vma | |
5372 | + myh->root.u.def.section->output_offset | |
5373 | + myh->root.u.def.value; | |
5374 | ||
5375 | errnode->u.b.veneer->vma = vma; | |
5376 | break; | |
5377 | ||
5378 | case VFP11_ERRATUM_ARM_VENEER: | |
5379 | case VFP11_ERRATUM_THUMB_VENEER: | |
5380 | /* Find return location. */ | |
5381 | sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r", | |
5382 | errnode->u.v.id); | |
5383 | ||
5384 | myh = elf_link_hash_lookup | |
5385 | (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); | |
5386 | ||
5387 | if (myh == NULL) | |
5388 | (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer " | |
5389 | "`%s'"), abfd, tmp_name); | |
5390 | ||
5391 | vma = myh->root.u.def.section->output_section->vma | |
5392 | + myh->root.u.def.section->output_offset | |
5393 | + myh->root.u.def.value; | |
5394 | ||
5395 | errnode->u.v.branch->vma = vma; | |
5396 | break; | |
906e58ca | 5397 | |
c7b8f16e JB |
5398 | default: |
5399 | abort (); | |
5400 | } | |
5401 | } | |
5402 | } | |
906e58ca | 5403 | |
c7b8f16e JB |
5404 | free (tmp_name); |
5405 | } | |
5406 | ||
5407 | ||
eb043451 PB |
5408 | /* Set target relocation values needed during linking. */ |
5409 | ||
5410 | void | |
bf21ed78 MS |
5411 | bfd_elf32_arm_set_target_relocs (struct bfd *output_bfd, |
5412 | struct bfd_link_info *link_info, | |
eb043451 | 5413 | int target1_is_rel, |
319850b4 | 5414 | char * target2_type, |
33bfe774 | 5415 | int fix_v4bx, |
c7b8f16e | 5416 | int use_blx, |
bf21ed78 | 5417 | bfd_arm_vfp11_fix vfp11_fix, |
a9dc9481 JM |
5418 | int no_enum_warn, int no_wchar_warn, |
5419 | int pic_veneer) | |
eb043451 PB |
5420 | { |
5421 | struct elf32_arm_link_hash_table *globals; | |
5422 | ||
5423 | globals = elf32_arm_hash_table (link_info); | |
5424 | ||
5425 | globals->target1_is_rel = target1_is_rel; | |
5426 | if (strcmp (target2_type, "rel") == 0) | |
5427 | globals->target2_reloc = R_ARM_REL32; | |
eeac373a PB |
5428 | else if (strcmp (target2_type, "abs") == 0) |
5429 | globals->target2_reloc = R_ARM_ABS32; | |
eb043451 PB |
5430 | else if (strcmp (target2_type, "got-rel") == 0) |
5431 | globals->target2_reloc = R_ARM_GOT_PREL; | |
5432 | else | |
5433 | { | |
5434 | _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."), | |
5435 | target2_type); | |
5436 | } | |
319850b4 | 5437 | globals->fix_v4bx = fix_v4bx; |
33bfe774 | 5438 | globals->use_blx |= use_blx; |
c7b8f16e | 5439 | globals->vfp11_fix = vfp11_fix; |
27e55c4d | 5440 | globals->pic_veneer = pic_veneer; |
bf21ed78 | 5441 | |
0ffa91dd NC |
5442 | BFD_ASSERT (is_arm_elf (output_bfd)); |
5443 | elf_arm_tdata (output_bfd)->no_enum_size_warning = no_enum_warn; | |
a9dc9481 | 5444 | elf_arm_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn; |
eb043451 | 5445 | } |
eb043451 | 5446 | |
12a0a0fd | 5447 | /* Replace the target offset of a Thumb bl or b.w instruction. */ |
252b5132 | 5448 | |
12a0a0fd PB |
5449 | static void |
5450 | insert_thumb_branch (bfd *abfd, long int offset, bfd_byte *insn) | |
5451 | { | |
5452 | bfd_vma upper; | |
5453 | bfd_vma lower; | |
5454 | int reloc_sign; | |
5455 | ||
5456 | BFD_ASSERT ((offset & 1) == 0); | |
5457 | ||
5458 | upper = bfd_get_16 (abfd, insn); | |
5459 | lower = bfd_get_16 (abfd, insn + 2); | |
5460 | reloc_sign = (offset < 0) ? 1 : 0; | |
5461 | upper = (upper & ~(bfd_vma) 0x7ff) | |
5462 | | ((offset >> 12) & 0x3ff) | |
5463 | | (reloc_sign << 10); | |
906e58ca | 5464 | lower = (lower & ~(bfd_vma) 0x2fff) |
12a0a0fd PB |
5465 | | (((!((offset >> 23) & 1)) ^ reloc_sign) << 13) |
5466 | | (((!((offset >> 22) & 1)) ^ reloc_sign) << 11) | |
5467 | | ((offset >> 1) & 0x7ff); | |
5468 | bfd_put_16 (abfd, upper, insn); | |
5469 | bfd_put_16 (abfd, lower, insn + 2); | |
252b5132 RH |
5470 | } |
5471 | ||
9b485d32 NC |
5472 | /* Thumb code calling an ARM function. */ |
5473 | ||
252b5132 | 5474 | static int |
57e8b36a NC |
5475 | elf32_thumb_to_arm_stub (struct bfd_link_info * info, |
5476 | const char * name, | |
5477 | bfd * input_bfd, | |
5478 | bfd * output_bfd, | |
5479 | asection * input_section, | |
5480 | bfd_byte * hit_data, | |
5481 | asection * sym_sec, | |
5482 | bfd_vma offset, | |
5483 | bfd_signed_vma addend, | |
f2a9dd69 DJ |
5484 | bfd_vma val, |
5485 | char **error_message) | |
252b5132 | 5486 | { |
bcbdc74c | 5487 | asection * s = 0; |
dc810e39 | 5488 | bfd_vma my_offset; |
252b5132 | 5489 | long int ret_offset; |
bcbdc74c NC |
5490 | struct elf_link_hash_entry * myh; |
5491 | struct elf32_arm_link_hash_table * globals; | |
252b5132 | 5492 | |
f2a9dd69 | 5493 | myh = find_thumb_glue (info, name, error_message); |
252b5132 | 5494 | if (myh == NULL) |
b34976b6 | 5495 | return FALSE; |
252b5132 RH |
5496 | |
5497 | globals = elf32_arm_hash_table (info); | |
5498 | ||
5499 | BFD_ASSERT (globals != NULL); | |
5500 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
5501 | ||
5502 | my_offset = myh->root.u.def.value; | |
5503 | ||
5504 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
5505 | THUMB2ARM_GLUE_SECTION_NAME); | |
5506 | ||
5507 | BFD_ASSERT (s != NULL); | |
5508 | BFD_ASSERT (s->contents != NULL); | |
5509 | BFD_ASSERT (s->output_section != NULL); | |
5510 | ||
5511 | if ((my_offset & 0x01) == 0x01) | |
5512 | { | |
5513 | if (sym_sec != NULL | |
5514 | && sym_sec->owner != NULL | |
5515 | && !INTERWORK_FLAG (sym_sec->owner)) | |
5516 | { | |
8f615d07 | 5517 | (*_bfd_error_handler) |
d003868e AM |
5518 | (_("%B(%s): warning: interworking not enabled.\n" |
5519 | " first occurrence: %B: thumb call to arm"), | |
5520 | sym_sec->owner, input_bfd, name); | |
252b5132 | 5521 | |
b34976b6 | 5522 | return FALSE; |
252b5132 RH |
5523 | } |
5524 | ||
5525 | --my_offset; | |
5526 | myh->root.u.def.value = my_offset; | |
5527 | ||
52ab56c2 PB |
5528 | put_thumb_insn (globals, output_bfd, (bfd_vma) t2a1_bx_pc_insn, |
5529 | s->contents + my_offset); | |
252b5132 | 5530 | |
52ab56c2 PB |
5531 | put_thumb_insn (globals, output_bfd, (bfd_vma) t2a2_noop_insn, |
5532 | s->contents + my_offset + 2); | |
252b5132 RH |
5533 | |
5534 | ret_offset = | |
9b485d32 NC |
5535 | /* Address of destination of the stub. */ |
5536 | ((bfd_signed_vma) val) | |
252b5132 | 5537 | - ((bfd_signed_vma) |
57e8b36a NC |
5538 | /* Offset from the start of the current section |
5539 | to the start of the stubs. */ | |
9b485d32 NC |
5540 | (s->output_offset |
5541 | /* Offset of the start of this stub from the start of the stubs. */ | |
5542 | + my_offset | |
5543 | /* Address of the start of the current section. */ | |
5544 | + s->output_section->vma) | |
5545 | /* The branch instruction is 4 bytes into the stub. */ | |
5546 | + 4 | |
5547 | /* ARM branches work from the pc of the instruction + 8. */ | |
5548 | + 8); | |
252b5132 | 5549 | |
52ab56c2 PB |
5550 | put_arm_insn (globals, output_bfd, |
5551 | (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF), | |
5552 | s->contents + my_offset + 4); | |
252b5132 RH |
5553 | } |
5554 | ||
5555 | BFD_ASSERT (my_offset <= globals->thumb_glue_size); | |
5556 | ||
427bfd90 NC |
5557 | /* Now go back and fix up the original BL insn to point to here. */ |
5558 | ret_offset = | |
5559 | /* Address of where the stub is located. */ | |
5560 | (s->output_section->vma + s->output_offset + my_offset) | |
5561 | /* Address of where the BL is located. */ | |
57e8b36a NC |
5562 | - (input_section->output_section->vma + input_section->output_offset |
5563 | + offset) | |
427bfd90 NC |
5564 | /* Addend in the relocation. */ |
5565 | - addend | |
5566 | /* Biassing for PC-relative addressing. */ | |
5567 | - 8; | |
252b5132 | 5568 | |
12a0a0fd | 5569 | insert_thumb_branch (input_bfd, ret_offset, hit_data - input_section->vma); |
252b5132 | 5570 | |
b34976b6 | 5571 | return TRUE; |
252b5132 RH |
5572 | } |
5573 | ||
a4fd1a8e | 5574 | /* Populate an Arm to Thumb stub. Returns the stub symbol. */ |
9b485d32 | 5575 | |
a4fd1a8e PB |
5576 | static struct elf_link_hash_entry * |
5577 | elf32_arm_create_thumb_stub (struct bfd_link_info * info, | |
5578 | const char * name, | |
5579 | bfd * input_bfd, | |
5580 | bfd * output_bfd, | |
5581 | asection * sym_sec, | |
5582 | bfd_vma val, | |
8029a119 NC |
5583 | asection * s, |
5584 | char ** error_message) | |
252b5132 | 5585 | { |
dc810e39 | 5586 | bfd_vma my_offset; |
252b5132 | 5587 | long int ret_offset; |
bcbdc74c NC |
5588 | struct elf_link_hash_entry * myh; |
5589 | struct elf32_arm_link_hash_table * globals; | |
252b5132 | 5590 | |
f2a9dd69 | 5591 | myh = find_arm_glue (info, name, error_message); |
252b5132 | 5592 | if (myh == NULL) |
a4fd1a8e | 5593 | return NULL; |
252b5132 RH |
5594 | |
5595 | globals = elf32_arm_hash_table (info); | |
5596 | ||
5597 | BFD_ASSERT (globals != NULL); | |
5598 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
5599 | ||
5600 | my_offset = myh->root.u.def.value; | |
252b5132 RH |
5601 | |
5602 | if ((my_offset & 0x01) == 0x01) | |
5603 | { | |
5604 | if (sym_sec != NULL | |
5605 | && sym_sec->owner != NULL | |
5606 | && !INTERWORK_FLAG (sym_sec->owner)) | |
5607 | { | |
8f615d07 | 5608 | (*_bfd_error_handler) |
d003868e AM |
5609 | (_("%B(%s): warning: interworking not enabled.\n" |
5610 | " first occurrence: %B: arm call to thumb"), | |
5611 | sym_sec->owner, input_bfd, name); | |
252b5132 | 5612 | } |
9b485d32 | 5613 | |
252b5132 RH |
5614 | --my_offset; |
5615 | myh->root.u.def.value = my_offset; | |
5616 | ||
27e55c4d PB |
5617 | if (info->shared || globals->root.is_relocatable_executable |
5618 | || globals->pic_veneer) | |
8f6277f5 PB |
5619 | { |
5620 | /* For relocatable objects we can't use absolute addresses, | |
5621 | so construct the address from a relative offset. */ | |
5622 | /* TODO: If the offset is small it's probably worth | |
5623 | constructing the address with adds. */ | |
52ab56c2 PB |
5624 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t1p_ldr_insn, |
5625 | s->contents + my_offset); | |
5626 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t2p_add_pc_insn, | |
5627 | s->contents + my_offset + 4); | |
5628 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t3p_bx_r12_insn, | |
5629 | s->contents + my_offset + 8); | |
8f6277f5 PB |
5630 | /* Adjust the offset by 4 for the position of the add, |
5631 | and 8 for the pipeline offset. */ | |
5632 | ret_offset = (val - (s->output_offset | |
5633 | + s->output_section->vma | |
5634 | + my_offset + 12)) | |
5635 | | 1; | |
5636 | bfd_put_32 (output_bfd, ret_offset, | |
5637 | s->contents + my_offset + 12); | |
5638 | } | |
26079076 PB |
5639 | else if (globals->use_blx) |
5640 | { | |
5641 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t1v5_ldr_insn, | |
5642 | s->contents + my_offset); | |
5643 | ||
5644 | /* It's a thumb address. Add the low order bit. */ | |
5645 | bfd_put_32 (output_bfd, val | a2t2v5_func_addr_insn, | |
5646 | s->contents + my_offset + 4); | |
5647 | } | |
8f6277f5 PB |
5648 | else |
5649 | { | |
52ab56c2 PB |
5650 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t1_ldr_insn, |
5651 | s->contents + my_offset); | |
252b5132 | 5652 | |
52ab56c2 PB |
5653 | put_arm_insn (globals, output_bfd, (bfd_vma) a2t2_bx_r12_insn, |
5654 | s->contents + my_offset + 4); | |
252b5132 | 5655 | |
8f6277f5 PB |
5656 | /* It's a thumb address. Add the low order bit. */ |
5657 | bfd_put_32 (output_bfd, val | a2t3_func_addr_insn, | |
5658 | s->contents + my_offset + 8); | |
8029a119 NC |
5659 | |
5660 | my_offset += 12; | |
8f6277f5 | 5661 | } |
252b5132 RH |
5662 | } |
5663 | ||
5664 | BFD_ASSERT (my_offset <= globals->arm_glue_size); | |
5665 | ||
a4fd1a8e PB |
5666 | return myh; |
5667 | } | |
5668 | ||
5669 | /* Arm code calling a Thumb function. */ | |
5670 | ||
5671 | static int | |
5672 | elf32_arm_to_thumb_stub (struct bfd_link_info * info, | |
5673 | const char * name, | |
5674 | bfd * input_bfd, | |
5675 | bfd * output_bfd, | |
5676 | asection * input_section, | |
5677 | bfd_byte * hit_data, | |
5678 | asection * sym_sec, | |
5679 | bfd_vma offset, | |
5680 | bfd_signed_vma addend, | |
f2a9dd69 DJ |
5681 | bfd_vma val, |
5682 | char **error_message) | |
a4fd1a8e PB |
5683 | { |
5684 | unsigned long int tmp; | |
5685 | bfd_vma my_offset; | |
5686 | asection * s; | |
5687 | long int ret_offset; | |
5688 | struct elf_link_hash_entry * myh; | |
5689 | struct elf32_arm_link_hash_table * globals; | |
5690 | ||
5691 | globals = elf32_arm_hash_table (info); | |
5692 | ||
5693 | BFD_ASSERT (globals != NULL); | |
5694 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
5695 | ||
5696 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
5697 | ARM2THUMB_GLUE_SECTION_NAME); | |
5698 | BFD_ASSERT (s != NULL); | |
5699 | BFD_ASSERT (s->contents != NULL); | |
5700 | BFD_ASSERT (s->output_section != NULL); | |
5701 | ||
5702 | myh = elf32_arm_create_thumb_stub (info, name, input_bfd, output_bfd, | |
f2a9dd69 | 5703 | sym_sec, val, s, error_message); |
a4fd1a8e PB |
5704 | if (!myh) |
5705 | return FALSE; | |
5706 | ||
5707 | my_offset = myh->root.u.def.value; | |
252b5132 RH |
5708 | tmp = bfd_get_32 (input_bfd, hit_data); |
5709 | tmp = tmp & 0xFF000000; | |
5710 | ||
9b485d32 | 5711 | /* Somehow these are both 4 too far, so subtract 8. */ |
dc810e39 AM |
5712 | ret_offset = (s->output_offset |
5713 | + my_offset | |
5714 | + s->output_section->vma | |
5715 | - (input_section->output_offset | |
5716 | + input_section->output_section->vma | |
5717 | + offset + addend) | |
5718 | - 8); | |
9a5aca8c | 5719 | |
252b5132 RH |
5720 | tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF); |
5721 | ||
dc810e39 | 5722 | bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma); |
252b5132 | 5723 | |
b34976b6 | 5724 | return TRUE; |
252b5132 RH |
5725 | } |
5726 | ||
a4fd1a8e PB |
5727 | /* Populate Arm stub for an exported Thumb function. */ |
5728 | ||
5729 | static bfd_boolean | |
5730 | elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry *h, void * inf) | |
5731 | { | |
5732 | struct bfd_link_info * info = (struct bfd_link_info *) inf; | |
5733 | asection * s; | |
5734 | struct elf_link_hash_entry * myh; | |
5735 | struct elf32_arm_link_hash_entry *eh; | |
5736 | struct elf32_arm_link_hash_table * globals; | |
5737 | asection *sec; | |
5738 | bfd_vma val; | |
f2a9dd69 | 5739 | char *error_message; |
a4fd1a8e | 5740 | |
906e58ca | 5741 | eh = elf32_arm_hash_entry (h); |
a4fd1a8e PB |
5742 | /* Allocate stubs for exported Thumb functions on v4t. */ |
5743 | if (eh->export_glue == NULL) | |
5744 | return TRUE; | |
5745 | ||
5746 | globals = elf32_arm_hash_table (info); | |
5747 | ||
5748 | BFD_ASSERT (globals != NULL); | |
5749 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
5750 | ||
5751 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
5752 | ARM2THUMB_GLUE_SECTION_NAME); | |
5753 | BFD_ASSERT (s != NULL); | |
5754 | BFD_ASSERT (s->contents != NULL); | |
5755 | BFD_ASSERT (s->output_section != NULL); | |
5756 | ||
5757 | sec = eh->export_glue->root.u.def.section; | |
0eaedd0e PB |
5758 | |
5759 | BFD_ASSERT (sec->output_section != NULL); | |
5760 | ||
a4fd1a8e PB |
5761 | val = eh->export_glue->root.u.def.value + sec->output_offset |
5762 | + sec->output_section->vma; | |
8029a119 | 5763 | |
a4fd1a8e PB |
5764 | myh = elf32_arm_create_thumb_stub (info, h->root.root.string, |
5765 | h->root.u.def.section->owner, | |
f2a9dd69 DJ |
5766 | globals->obfd, sec, val, s, |
5767 | &error_message); | |
a4fd1a8e PB |
5768 | BFD_ASSERT (myh); |
5769 | return TRUE; | |
5770 | } | |
5771 | ||
845b51d6 PB |
5772 | /* Populate ARMv4 BX veneers. Returns the absolute adress of the veneer. */ |
5773 | ||
5774 | static bfd_vma | |
5775 | elf32_arm_bx_glue (struct bfd_link_info * info, int reg) | |
5776 | { | |
5777 | bfd_byte *p; | |
5778 | bfd_vma glue_addr; | |
5779 | asection *s; | |
5780 | struct elf32_arm_link_hash_table *globals; | |
5781 | ||
5782 | globals = elf32_arm_hash_table (info); | |
5783 | ||
5784 | BFD_ASSERT (globals != NULL); | |
5785 | BFD_ASSERT (globals->bfd_of_glue_owner != NULL); | |
5786 | ||
5787 | s = bfd_get_section_by_name (globals->bfd_of_glue_owner, | |
5788 | ARM_BX_GLUE_SECTION_NAME); | |
5789 | BFD_ASSERT (s != NULL); | |
5790 | BFD_ASSERT (s->contents != NULL); | |
5791 | BFD_ASSERT (s->output_section != NULL); | |
5792 | ||
5793 | BFD_ASSERT (globals->bx_glue_offset[reg] & 2); | |
5794 | ||
5795 | glue_addr = globals->bx_glue_offset[reg] & ~(bfd_vma)3; | |
5796 | ||
5797 | if ((globals->bx_glue_offset[reg] & 1) == 0) | |
5798 | { | |
5799 | p = s->contents + glue_addr; | |
5800 | bfd_put_32 (globals->obfd, armbx1_tst_insn + (reg << 16), p); | |
5801 | bfd_put_32 (globals->obfd, armbx2_moveq_insn + reg, p + 4); | |
5802 | bfd_put_32 (globals->obfd, armbx3_bx_insn + reg, p + 8); | |
5803 | globals->bx_glue_offset[reg] |= 1; | |
5804 | } | |
5805 | ||
5806 | return glue_addr + s->output_section->vma + s->output_offset; | |
5807 | } | |
5808 | ||
a4fd1a8e PB |
5809 | /* Generate Arm stubs for exported Thumb symbols. */ |
5810 | static void | |
906e58ca | 5811 | elf32_arm_begin_write_processing (bfd *abfd ATTRIBUTE_UNUSED, |
a4fd1a8e PB |
5812 | struct bfd_link_info *link_info) |
5813 | { | |
5814 | struct elf32_arm_link_hash_table * globals; | |
5815 | ||
8029a119 NC |
5816 | if (link_info == NULL) |
5817 | /* Ignore this if we are not called by the ELF backend linker. */ | |
a4fd1a8e PB |
5818 | return; |
5819 | ||
5820 | globals = elf32_arm_hash_table (link_info); | |
84c08195 PB |
5821 | /* If blx is available then exported Thumb symbols are OK and there is |
5822 | nothing to do. */ | |
a4fd1a8e PB |
5823 | if (globals->use_blx) |
5824 | return; | |
5825 | ||
5826 | elf_link_hash_traverse (&globals->root, elf32_arm_to_thumb_export_stub, | |
5827 | link_info); | |
5828 | } | |
5829 | ||
eb043451 PB |
5830 | /* Some relocations map to different relocations depending on the |
5831 | target. Return the real relocation. */ | |
8029a119 | 5832 | |
eb043451 PB |
5833 | static int |
5834 | arm_real_reloc_type (struct elf32_arm_link_hash_table * globals, | |
5835 | int r_type) | |
5836 | { | |
5837 | switch (r_type) | |
5838 | { | |
5839 | case R_ARM_TARGET1: | |
5840 | if (globals->target1_is_rel) | |
5841 | return R_ARM_REL32; | |
5842 | else | |
5843 | return R_ARM_ABS32; | |
5844 | ||
5845 | case R_ARM_TARGET2: | |
5846 | return globals->target2_reloc; | |
5847 | ||
5848 | default: | |
5849 | return r_type; | |
5850 | } | |
5851 | } | |
eb043451 | 5852 | |
ba93b8ac DJ |
5853 | /* Return the base VMA address which should be subtracted from real addresses |
5854 | when resolving @dtpoff relocation. | |
5855 | This is PT_TLS segment p_vaddr. */ | |
5856 | ||
5857 | static bfd_vma | |
5858 | dtpoff_base (struct bfd_link_info *info) | |
5859 | { | |
5860 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
5861 | if (elf_hash_table (info)->tls_sec == NULL) | |
5862 | return 0; | |
5863 | return elf_hash_table (info)->tls_sec->vma; | |
5864 | } | |
5865 | ||
5866 | /* Return the relocation value for @tpoff relocation | |
5867 | if STT_TLS virtual address is ADDRESS. */ | |
5868 | ||
5869 | static bfd_vma | |
5870 | tpoff (struct bfd_link_info *info, bfd_vma address) | |
5871 | { | |
5872 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
5873 | bfd_vma base; | |
5874 | ||
5875 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
5876 | if (htab->tls_sec == NULL) | |
5877 | return 0; | |
5878 | base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power); | |
5879 | return address - htab->tls_sec->vma + base; | |
5880 | } | |
5881 | ||
00a97672 RS |
5882 | /* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA. |
5883 | VALUE is the relocation value. */ | |
5884 | ||
5885 | static bfd_reloc_status_type | |
5886 | elf32_arm_abs12_reloc (bfd *abfd, void *data, bfd_vma value) | |
5887 | { | |
5888 | if (value > 0xfff) | |
5889 | return bfd_reloc_overflow; | |
5890 | ||
5891 | value |= bfd_get_32 (abfd, data) & 0xfffff000; | |
5892 | bfd_put_32 (abfd, value, data); | |
5893 | return bfd_reloc_ok; | |
5894 | } | |
5895 | ||
4962c51a MS |
5896 | /* For a given value of n, calculate the value of G_n as required to |
5897 | deal with group relocations. We return it in the form of an | |
5898 | encoded constant-and-rotation, together with the final residual. If n is | |
5899 | specified as less than zero, then final_residual is filled with the | |
5900 | input value and no further action is performed. */ | |
5901 | ||
5902 | static bfd_vma | |
5903 | calculate_group_reloc_mask (bfd_vma value, int n, bfd_vma *final_residual) | |
5904 | { | |
5905 | int current_n; | |
5906 | bfd_vma g_n; | |
5907 | bfd_vma encoded_g_n = 0; | |
5908 | bfd_vma residual = value; /* Also known as Y_n. */ | |
5909 | ||
5910 | for (current_n = 0; current_n <= n; current_n++) | |
5911 | { | |
5912 | int shift; | |
5913 | ||
5914 | /* Calculate which part of the value to mask. */ | |
5915 | if (residual == 0) | |
5916 | shift = 0; | |
5917 | else | |
5918 | { | |
5919 | int msb; | |
5920 | ||
5921 | /* Determine the most significant bit in the residual and | |
5922 | align the resulting value to a 2-bit boundary. */ | |
5923 | for (msb = 30; msb >= 0; msb -= 2) | |
5924 | if (residual & (3 << msb)) | |
5925 | break; | |
5926 | ||
5927 | /* The desired shift is now (msb - 6), or zero, whichever | |
5928 | is the greater. */ | |
5929 | shift = msb - 6; | |
5930 | if (shift < 0) | |
5931 | shift = 0; | |
5932 | } | |
5933 | ||
5934 | /* Calculate g_n in 32-bit as well as encoded constant+rotation form. */ | |
5935 | g_n = residual & (0xff << shift); | |
5936 | encoded_g_n = (g_n >> shift) | |
5937 | | ((g_n <= 0xff ? 0 : (32 - shift) / 2) << 8); | |
5938 | ||
5939 | /* Calculate the residual for the next time around. */ | |
5940 | residual &= ~g_n; | |
5941 | } | |
5942 | ||
5943 | *final_residual = residual; | |
5944 | ||
5945 | return encoded_g_n; | |
5946 | } | |
5947 | ||
5948 | /* Given an ARM instruction, determine whether it is an ADD or a SUB. | |
5949 | Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */ | |
906e58ca | 5950 | |
4962c51a | 5951 | static int |
906e58ca | 5952 | identify_add_or_sub (bfd_vma insn) |
4962c51a MS |
5953 | { |
5954 | int opcode = insn & 0x1e00000; | |
5955 | ||
5956 | if (opcode == 1 << 23) /* ADD */ | |
5957 | return 1; | |
5958 | ||
5959 | if (opcode == 1 << 22) /* SUB */ | |
5960 | return -1; | |
5961 | ||
5962 | return 0; | |
5963 | } | |
5964 | ||
252b5132 | 5965 | /* Perform a relocation as part of a final link. */ |
9b485d32 | 5966 | |
252b5132 | 5967 | static bfd_reloc_status_type |
57e8b36a NC |
5968 | elf32_arm_final_link_relocate (reloc_howto_type * howto, |
5969 | bfd * input_bfd, | |
5970 | bfd * output_bfd, | |
5971 | asection * input_section, | |
5972 | bfd_byte * contents, | |
5973 | Elf_Internal_Rela * rel, | |
5974 | bfd_vma value, | |
5975 | struct bfd_link_info * info, | |
5976 | asection * sym_sec, | |
5977 | const char * sym_name, | |
5978 | int sym_flags, | |
0945cdfd | 5979 | struct elf_link_hash_entry * h, |
f2a9dd69 | 5980 | bfd_boolean * unresolved_reloc_p, |
8029a119 | 5981 | char ** error_message) |
252b5132 RH |
5982 | { |
5983 | unsigned long r_type = howto->type; | |
5984 | unsigned long r_symndx; | |
5985 | bfd_byte * hit_data = contents + rel->r_offset; | |
5986 | bfd * dynobj = NULL; | |
5987 | Elf_Internal_Shdr * symtab_hdr; | |
5988 | struct elf_link_hash_entry ** sym_hashes; | |
5989 | bfd_vma * local_got_offsets; | |
5990 | asection * sgot = NULL; | |
5991 | asection * splt = NULL; | |
5992 | asection * sreloc = NULL; | |
252b5132 | 5993 | bfd_vma addend; |
ba96a88f NC |
5994 | bfd_signed_vma signed_addend; |
5995 | struct elf32_arm_link_hash_table * globals; | |
f21f3fe0 | 5996 | |
9c504268 PB |
5997 | globals = elf32_arm_hash_table (info); |
5998 | ||
0ffa91dd NC |
5999 | BFD_ASSERT (is_arm_elf (input_bfd)); |
6000 | ||
6001 | /* Some relocation types map to different relocations depending on the | |
9c504268 | 6002 | target. We pick the right one here. */ |
eb043451 PB |
6003 | r_type = arm_real_reloc_type (globals, r_type); |
6004 | if (r_type != howto->type) | |
6005 | howto = elf32_arm_howto_from_type (r_type); | |
9c504268 | 6006 | |
cac15327 NC |
6007 | /* If the start address has been set, then set the EF_ARM_HASENTRY |
6008 | flag. Setting this more than once is redundant, but the cost is | |
6009 | not too high, and it keeps the code simple. | |
99e4ae17 | 6010 | |
cac15327 NC |
6011 | The test is done here, rather than somewhere else, because the |
6012 | start address is only set just before the final link commences. | |
6013 | ||
6014 | Note - if the user deliberately sets a start address of 0, the | |
6015 | flag will not be set. */ | |
6016 | if (bfd_get_start_address (output_bfd) != 0) | |
6017 | elf_elfheader (output_bfd)->e_flags |= EF_ARM_HASENTRY; | |
99e4ae17 | 6018 | |
252b5132 RH |
6019 | dynobj = elf_hash_table (info)->dynobj; |
6020 | if (dynobj) | |
6021 | { | |
6022 | sgot = bfd_get_section_by_name (dynobj, ".got"); | |
6023 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
6024 | } | |
0ffa91dd | 6025 | symtab_hdr = & elf_symtab_hdr (input_bfd); |
252b5132 RH |
6026 | sym_hashes = elf_sym_hashes (input_bfd); |
6027 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
6028 | r_symndx = ELF32_R_SYM (rel->r_info); | |
6029 | ||
4e7fd91e | 6030 | if (globals->use_rel) |
ba96a88f | 6031 | { |
4e7fd91e PB |
6032 | addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask; |
6033 | ||
6034 | if (addend & ((howto->src_mask + 1) >> 1)) | |
6035 | { | |
6036 | signed_addend = -1; | |
6037 | signed_addend &= ~ howto->src_mask; | |
6038 | signed_addend |= addend; | |
6039 | } | |
6040 | else | |
6041 | signed_addend = addend; | |
ba96a88f NC |
6042 | } |
6043 | else | |
4e7fd91e | 6044 | addend = signed_addend = rel->r_addend; |
f21f3fe0 | 6045 | |
252b5132 RH |
6046 | switch (r_type) |
6047 | { | |
6048 | case R_ARM_NONE: | |
28a094c2 DJ |
6049 | /* We don't need to find a value for this symbol. It's just a |
6050 | marker. */ | |
6051 | *unresolved_reloc_p = FALSE; | |
252b5132 RH |
6052 | return bfd_reloc_ok; |
6053 | ||
00a97672 RS |
6054 | case R_ARM_ABS12: |
6055 | if (!globals->vxworks_p) | |
6056 | return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend); | |
6057 | ||
252b5132 RH |
6058 | case R_ARM_PC24: |
6059 | case R_ARM_ABS32: | |
bb224fc3 | 6060 | case R_ARM_ABS32_NOI: |
252b5132 | 6061 | case R_ARM_REL32: |
bb224fc3 | 6062 | case R_ARM_REL32_NOI: |
5b5bb741 PB |
6063 | case R_ARM_CALL: |
6064 | case R_ARM_JUMP24: | |
dfc5f959 | 6065 | case R_ARM_XPC25: |
eb043451 | 6066 | case R_ARM_PREL31: |
7359ea65 | 6067 | case R_ARM_PLT32: |
7359ea65 DJ |
6068 | /* Handle relocations which should use the PLT entry. ABS32/REL32 |
6069 | will use the symbol's value, which may point to a PLT entry, but we | |
6070 | don't need to handle that here. If we created a PLT entry, all | |
5fa9e92f CL |
6071 | branches in this object should go to it, except if the PLT is too |
6072 | far away, in which case a long branch stub should be inserted. */ | |
bb224fc3 | 6073 | if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32 |
5fa9e92f CL |
6074 | && r_type != R_ARM_ABS32_NOI && r_type != R_ARM_REL32_NOI |
6075 | && r_type != R_ARM_CALL) | |
7359ea65 | 6076 | && h != NULL |
c84cd8ee | 6077 | && splt != NULL |
7359ea65 DJ |
6078 | && h->plt.offset != (bfd_vma) -1) |
6079 | { | |
c84cd8ee DJ |
6080 | /* If we've created a .plt section, and assigned a PLT entry to |
6081 | this function, it should not be known to bind locally. If | |
6082 | it were, we would have cleared the PLT entry. */ | |
7359ea65 DJ |
6083 | BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info, h)); |
6084 | ||
6085 | value = (splt->output_section->vma | |
6086 | + splt->output_offset | |
6087 | + h->plt.offset); | |
0945cdfd | 6088 | *unresolved_reloc_p = FALSE; |
7359ea65 DJ |
6089 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
6090 | contents, rel->r_offset, value, | |
00a97672 | 6091 | rel->r_addend); |
7359ea65 DJ |
6092 | } |
6093 | ||
67687978 PB |
6094 | /* When generating a shared object or relocatable executable, these |
6095 | relocations are copied into the output file to be resolved at | |
6096 | run time. */ | |
6097 | if ((info->shared || globals->root.is_relocatable_executable) | |
7359ea65 | 6098 | && (input_section->flags & SEC_ALLOC) |
3348747a NS |
6099 | && !(elf32_arm_hash_table (info)->vxworks_p |
6100 | && strcmp (input_section->output_section->name, | |
6101 | ".tls_vars") == 0) | |
bb224fc3 | 6102 | && ((r_type != R_ARM_REL32 && r_type != R_ARM_REL32_NOI) |
ee06dc07 | 6103 | || !SYMBOL_CALLS_LOCAL (info, h)) |
7359ea65 DJ |
6104 | && (h == NULL |
6105 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6106 | || h->root.type != bfd_link_hash_undefweak) | |
6107 | && r_type != R_ARM_PC24 | |
5b5bb741 PB |
6108 | && r_type != R_ARM_CALL |
6109 | && r_type != R_ARM_JUMP24 | |
ee06dc07 | 6110 | && r_type != R_ARM_PREL31 |
7359ea65 | 6111 | && r_type != R_ARM_PLT32) |
252b5132 | 6112 | { |
947216bf AM |
6113 | Elf_Internal_Rela outrel; |
6114 | bfd_byte *loc; | |
b34976b6 | 6115 | bfd_boolean skip, relocate; |
f21f3fe0 | 6116 | |
0945cdfd DJ |
6117 | *unresolved_reloc_p = FALSE; |
6118 | ||
252b5132 RH |
6119 | if (sreloc == NULL) |
6120 | { | |
83bac4b0 NC |
6121 | sreloc = _bfd_elf_get_dynamic_reloc_section (input_bfd, input_section, |
6122 | ! globals->use_rel); | |
f21f3fe0 | 6123 | |
83bac4b0 | 6124 | if (sreloc == NULL) |
252b5132 | 6125 | return bfd_reloc_notsupported; |
252b5132 | 6126 | } |
f21f3fe0 | 6127 | |
b34976b6 AM |
6128 | skip = FALSE; |
6129 | relocate = FALSE; | |
f21f3fe0 | 6130 | |
00a97672 | 6131 | outrel.r_addend = addend; |
c629eae0 JJ |
6132 | outrel.r_offset = |
6133 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
6134 | rel->r_offset); | |
6135 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 6136 | skip = TRUE; |
0bb2d96a | 6137 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 6138 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
6139 | outrel.r_offset += (input_section->output_section->vma |
6140 | + input_section->output_offset); | |
f21f3fe0 | 6141 | |
252b5132 | 6142 | if (skip) |
0bb2d96a | 6143 | memset (&outrel, 0, sizeof outrel); |
5e681ec4 PB |
6144 | else if (h != NULL |
6145 | && h->dynindx != -1 | |
7359ea65 | 6146 | && (!info->shared |
5e681ec4 | 6147 | || !info->symbolic |
f5385ebf | 6148 | || !h->def_regular)) |
5e681ec4 | 6149 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
252b5132 RH |
6150 | else |
6151 | { | |
a16385dc MM |
6152 | int symbol; |
6153 | ||
5e681ec4 | 6154 | /* This symbol is local, or marked to become local. */ |
b7693d02 DJ |
6155 | if (sym_flags == STT_ARM_TFUNC) |
6156 | value |= 1; | |
a16385dc | 6157 | if (globals->symbian_p) |
6366ff1e | 6158 | { |
74541ad4 AM |
6159 | asection *osec; |
6160 | ||
6366ff1e MM |
6161 | /* On Symbian OS, the data segment and text segement |
6162 | can be relocated independently. Therefore, we | |
6163 | must indicate the segment to which this | |
6164 | relocation is relative. The BPABI allows us to | |
6165 | use any symbol in the right segment; we just use | |
6166 | the section symbol as it is convenient. (We | |
6167 | cannot use the symbol given by "h" directly as it | |
74541ad4 AM |
6168 | will not appear in the dynamic symbol table.) |
6169 | ||
6170 | Note that the dynamic linker ignores the section | |
6171 | symbol value, so we don't subtract osec->vma | |
6172 | from the emitted reloc addend. */ | |
10dbd1f3 | 6173 | if (sym_sec) |
74541ad4 | 6174 | osec = sym_sec->output_section; |
10dbd1f3 | 6175 | else |
74541ad4 AM |
6176 | osec = input_section->output_section; |
6177 | symbol = elf_section_data (osec)->dynindx; | |
6178 | if (symbol == 0) | |
6179 | { | |
6180 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
6181 | ||
6182 | if ((osec->flags & SEC_READONLY) == 0 | |
6183 | && htab->data_index_section != NULL) | |
6184 | osec = htab->data_index_section; | |
6185 | else | |
6186 | osec = htab->text_index_section; | |
6187 | symbol = elf_section_data (osec)->dynindx; | |
6188 | } | |
6366ff1e MM |
6189 | BFD_ASSERT (symbol != 0); |
6190 | } | |
a16385dc MM |
6191 | else |
6192 | /* On SVR4-ish systems, the dynamic loader cannot | |
6193 | relocate the text and data segments independently, | |
6194 | so the symbol does not matter. */ | |
6195 | symbol = 0; | |
6196 | outrel.r_info = ELF32_R_INFO (symbol, R_ARM_RELATIVE); | |
00a97672 RS |
6197 | if (globals->use_rel) |
6198 | relocate = TRUE; | |
6199 | else | |
6200 | outrel.r_addend += value; | |
252b5132 | 6201 | } |
f21f3fe0 | 6202 | |
947216bf | 6203 | loc = sreloc->contents; |
00a97672 RS |
6204 | loc += sreloc->reloc_count++ * RELOC_SIZE (globals); |
6205 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
9a5aca8c | 6206 | |
f21f3fe0 | 6207 | /* If this reloc is against an external symbol, we do not want to |
252b5132 | 6208 | fiddle with the addend. Otherwise, we need to include the symbol |
9b485d32 | 6209 | value so that it becomes an addend for the dynamic reloc. */ |
252b5132 RH |
6210 | if (! relocate) |
6211 | return bfd_reloc_ok; | |
9a5aca8c | 6212 | |
f21f3fe0 | 6213 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
252b5132 RH |
6214 | contents, rel->r_offset, value, |
6215 | (bfd_vma) 0); | |
6216 | } | |
6217 | else switch (r_type) | |
6218 | { | |
00a97672 RS |
6219 | case R_ARM_ABS12: |
6220 | return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend); | |
6221 | ||
dfc5f959 | 6222 | case R_ARM_XPC25: /* Arm BLX instruction. */ |
5b5bb741 PB |
6223 | case R_ARM_CALL: |
6224 | case R_ARM_JUMP24: | |
8029a119 | 6225 | case R_ARM_PC24: /* Arm B/BL instruction. */ |
7359ea65 | 6226 | case R_ARM_PLT32: |
906e58ca NC |
6227 | { |
6228 | bfd_vma from; | |
6229 | bfd_signed_vma branch_offset; | |
6230 | struct elf32_arm_stub_hash_entry *stub_entry = NULL; | |
6231 | ||
dfc5f959 | 6232 | if (r_type == R_ARM_XPC25) |
252b5132 | 6233 | { |
dfc5f959 NC |
6234 | /* Check for Arm calling Arm function. */ |
6235 | /* FIXME: Should we translate the instruction into a BL | |
6236 | instruction instead ? */ | |
6237 | if (sym_flags != STT_ARM_TFUNC) | |
d003868e AM |
6238 | (*_bfd_error_handler) |
6239 | (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."), | |
6240 | input_bfd, | |
6241 | h ? h->root.root.string : "(local)"); | |
dfc5f959 | 6242 | } |
906e58ca | 6243 | else if (r_type != R_ARM_CALL) |
dfc5f959 NC |
6244 | { |
6245 | /* Check for Arm calling Thumb function. */ | |
6246 | if (sym_flags == STT_ARM_TFUNC) | |
6247 | { | |
f2a9dd69 DJ |
6248 | if (elf32_arm_to_thumb_stub (info, sym_name, input_bfd, |
6249 | output_bfd, input_section, | |
6250 | hit_data, sym_sec, rel->r_offset, | |
6251 | signed_addend, value, | |
6252 | error_message)) | |
6253 | return bfd_reloc_ok; | |
6254 | else | |
6255 | return bfd_reloc_dangerous; | |
dfc5f959 | 6256 | } |
252b5132 | 6257 | } |
ba96a88f | 6258 | |
906e58ca | 6259 | /* Check if a stub has to be inserted because the |
8029a119 | 6260 | destination is too far or we are changing mode. */ |
906e58ca NC |
6261 | if (r_type == R_ARM_CALL) |
6262 | { | |
5fa9e92f CL |
6263 | /* If the call goes through a PLT entry, make sure to |
6264 | check distance to the right destination address. */ | |
6265 | if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1) | |
6266 | { | |
6267 | value = (splt->output_section->vma | |
6268 | + splt->output_offset | |
6269 | + h->plt.offset); | |
6270 | *unresolved_reloc_p = FALSE; | |
6271 | } | |
6272 | ||
6273 | from = (input_section->output_section->vma | |
6274 | + input_section->output_offset | |
6275 | + rel->r_offset); | |
6276 | branch_offset = (bfd_signed_vma)(value - from); | |
6277 | ||
906e58ca NC |
6278 | if (branch_offset > ARM_MAX_FWD_BRANCH_OFFSET |
6279 | || branch_offset < ARM_MAX_BWD_BRANCH_OFFSET | |
6280 | || sym_flags == STT_ARM_TFUNC) | |
6281 | { | |
6282 | /* The target is out of reach, so redirect the | |
6283 | branch to the local stub for this function. */ | |
6284 | ||
6285 | stub_entry = elf32_arm_get_stub_entry (input_section, | |
6286 | sym_sec, h, | |
6287 | rel, globals); | |
6288 | if (stub_entry != NULL) | |
6289 | value = (stub_entry->stub_offset | |
6290 | + stub_entry->stub_sec->output_offset | |
6291 | + stub_entry->stub_sec->output_section->vma); | |
6292 | } | |
6293 | } | |
6294 | ||
dea514f5 PB |
6295 | /* The ARM ELF ABI says that this reloc is computed as: S - P + A |
6296 | where: | |
6297 | S is the address of the symbol in the relocation. | |
6298 | P is address of the instruction being relocated. | |
6299 | A is the addend (extracted from the instruction) in bytes. | |
6300 | ||
6301 | S is held in 'value'. | |
6302 | P is the base address of the section containing the | |
6303 | instruction plus the offset of the reloc into that | |
6304 | section, ie: | |
6305 | (input_section->output_section->vma + | |
6306 | input_section->output_offset + | |
6307 | rel->r_offset). | |
6308 | A is the addend, converted into bytes, ie: | |
6309 | (signed_addend * 4) | |
6310 | ||
6311 | Note: None of these operations have knowledge of the pipeline | |
6312 | size of the processor, thus it is up to the assembler to | |
6313 | encode this information into the addend. */ | |
6314 | value -= (input_section->output_section->vma | |
6315 | + input_section->output_offset); | |
6316 | value -= rel->r_offset; | |
4e7fd91e PB |
6317 | if (globals->use_rel) |
6318 | value += (signed_addend << howto->size); | |
6319 | else | |
6320 | /* RELA addends do not have to be adjusted by howto->size. */ | |
6321 | value += signed_addend; | |
23080146 | 6322 | |
dcb5e6e6 NC |
6323 | signed_addend = value; |
6324 | signed_addend >>= howto->rightshift; | |
9a5aca8c | 6325 | |
5ab79981 PB |
6326 | /* A branch to an undefined weak symbol is turned into a jump to |
6327 | the next instruction. */ | |
6328 | if (h && h->root.type == bfd_link_hash_undefweak) | |
6329 | { | |
6330 | value = (bfd_get_32 (input_bfd, hit_data) & 0xf0000000) | |
6331 | | 0x0affffff; | |
6332 | } | |
6333 | else | |
59f2c4e7 | 6334 | { |
9b485d32 | 6335 | /* Perform a signed range check. */ |
dcb5e6e6 | 6336 | if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1)) |
59f2c4e7 NC |
6337 | || signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1))) |
6338 | return bfd_reloc_overflow; | |
9a5aca8c | 6339 | |
5ab79981 | 6340 | addend = (value & 2); |
39b41c9c | 6341 | |
5ab79981 PB |
6342 | value = (signed_addend & howto->dst_mask) |
6343 | | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask)); | |
39b41c9c | 6344 | |
5ab79981 | 6345 | /* Set the H bit in the BLX instruction. */ |
39b41c9c | 6346 | if (sym_flags == STT_ARM_TFUNC) |
39b41c9c | 6347 | { |
5ab79981 PB |
6348 | if (addend) |
6349 | value |= (1 << 24); | |
6350 | else | |
6351 | value &= ~(bfd_vma)(1 << 24); | |
6352 | } | |
6353 | if (r_type == R_ARM_CALL) | |
6354 | { | |
6355 | /* Select the correct instruction (BL or BLX). */ | |
906e58ca | 6356 | /* Only if we are not handling a BL to a stub. In this |
8029a119 | 6357 | case, mode switching is performed by the stub. */ |
906e58ca | 6358 | if (sym_flags == STT_ARM_TFUNC && !stub_entry) |
5ab79981 PB |
6359 | value |= (1 << 28); |
6360 | else | |
6361 | { | |
6362 | value &= ~(bfd_vma)(1 << 28); | |
6363 | value |= (1 << 24); | |
6364 | } | |
39b41c9c PB |
6365 | } |
6366 | } | |
906e58ca | 6367 | } |
252b5132 | 6368 | break; |
f21f3fe0 | 6369 | |
252b5132 RH |
6370 | case R_ARM_ABS32: |
6371 | value += addend; | |
6372 | if (sym_flags == STT_ARM_TFUNC) | |
6373 | value |= 1; | |
6374 | break; | |
f21f3fe0 | 6375 | |
bb224fc3 MS |
6376 | case R_ARM_ABS32_NOI: |
6377 | value += addend; | |
6378 | break; | |
6379 | ||
252b5132 | 6380 | case R_ARM_REL32: |
a8bc6c78 PB |
6381 | value += addend; |
6382 | if (sym_flags == STT_ARM_TFUNC) | |
6383 | value |= 1; | |
252b5132 | 6384 | value -= (input_section->output_section->vma |
62efb346 | 6385 | + input_section->output_offset + rel->r_offset); |
252b5132 | 6386 | break; |
eb043451 | 6387 | |
bb224fc3 MS |
6388 | case R_ARM_REL32_NOI: |
6389 | value += addend; | |
6390 | value -= (input_section->output_section->vma | |
6391 | + input_section->output_offset + rel->r_offset); | |
6392 | break; | |
6393 | ||
eb043451 PB |
6394 | case R_ARM_PREL31: |
6395 | value -= (input_section->output_section->vma | |
6396 | + input_section->output_offset + rel->r_offset); | |
6397 | value += signed_addend; | |
6398 | if (! h || h->root.type != bfd_link_hash_undefweak) | |
6399 | { | |
8029a119 | 6400 | /* Check for overflow. */ |
eb043451 PB |
6401 | if ((value ^ (value >> 1)) & (1 << 30)) |
6402 | return bfd_reloc_overflow; | |
6403 | } | |
6404 | value &= 0x7fffffff; | |
6405 | value |= (bfd_get_32 (input_bfd, hit_data) & 0x80000000); | |
6406 | if (sym_flags == STT_ARM_TFUNC) | |
6407 | value |= 1; | |
6408 | break; | |
252b5132 | 6409 | } |
f21f3fe0 | 6410 | |
252b5132 RH |
6411 | bfd_put_32 (input_bfd, value, hit_data); |
6412 | return bfd_reloc_ok; | |
6413 | ||
6414 | case R_ARM_ABS8: | |
6415 | value += addend; | |
6416 | if ((long) value > 0x7f || (long) value < -0x80) | |
6417 | return bfd_reloc_overflow; | |
6418 | ||
6419 | bfd_put_8 (input_bfd, value, hit_data); | |
6420 | return bfd_reloc_ok; | |
6421 | ||
6422 | case R_ARM_ABS16: | |
6423 | value += addend; | |
6424 | ||
6425 | if ((long) value > 0x7fff || (long) value < -0x8000) | |
6426 | return bfd_reloc_overflow; | |
6427 | ||
6428 | bfd_put_16 (input_bfd, value, hit_data); | |
6429 | return bfd_reloc_ok; | |
6430 | ||
252b5132 | 6431 | case R_ARM_THM_ABS5: |
9b485d32 | 6432 | /* Support ldr and str instructions for the thumb. */ |
4e7fd91e PB |
6433 | if (globals->use_rel) |
6434 | { | |
6435 | /* Need to refetch addend. */ | |
6436 | addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask; | |
6437 | /* ??? Need to determine shift amount from operand size. */ | |
6438 | addend >>= howto->rightshift; | |
6439 | } | |
252b5132 RH |
6440 | value += addend; |
6441 | ||
6442 | /* ??? Isn't value unsigned? */ | |
6443 | if ((long) value > 0x1f || (long) value < -0x10) | |
6444 | return bfd_reloc_overflow; | |
6445 | ||
6446 | /* ??? Value needs to be properly shifted into place first. */ | |
6447 | value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f; | |
6448 | bfd_put_16 (input_bfd, value, hit_data); | |
6449 | return bfd_reloc_ok; | |
6450 | ||
2cab6cc3 MS |
6451 | case R_ARM_THM_ALU_PREL_11_0: |
6452 | /* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */ | |
6453 | { | |
6454 | bfd_vma insn; | |
6455 | bfd_signed_vma relocation; | |
6456 | ||
6457 | insn = (bfd_get_16 (input_bfd, hit_data) << 16) | |
6458 | | bfd_get_16 (input_bfd, hit_data + 2); | |
6459 | ||
6460 | if (globals->use_rel) | |
6461 | { | |
6462 | signed_addend = (insn & 0xff) | ((insn & 0x7000) >> 4) | |
6463 | | ((insn & (1 << 26)) >> 15); | |
6464 | if (insn & 0xf00000) | |
6465 | signed_addend = -signed_addend; | |
6466 | } | |
6467 | ||
6468 | relocation = value + signed_addend; | |
6469 | relocation -= (input_section->output_section->vma | |
6470 | + input_section->output_offset | |
6471 | + rel->r_offset); | |
6472 | ||
6473 | value = abs (relocation); | |
6474 | ||
6475 | if (value >= 0x1000) | |
6476 | return bfd_reloc_overflow; | |
6477 | ||
6478 | insn = (insn & 0xfb0f8f00) | (value & 0xff) | |
6479 | | ((value & 0x700) << 4) | |
6480 | | ((value & 0x800) << 15); | |
6481 | if (relocation < 0) | |
6482 | insn |= 0xa00000; | |
6483 | ||
6484 | bfd_put_16 (input_bfd, insn >> 16, hit_data); | |
6485 | bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2); | |
6486 | ||
6487 | return bfd_reloc_ok; | |
6488 | } | |
6489 | ||
6490 | case R_ARM_THM_PC12: | |
6491 | /* Corresponds to: ldr.w reg, [pc, #offset]. */ | |
6492 | { | |
6493 | bfd_vma insn; | |
6494 | bfd_signed_vma relocation; | |
6495 | ||
6496 | insn = (bfd_get_16 (input_bfd, hit_data) << 16) | |
6497 | | bfd_get_16 (input_bfd, hit_data + 2); | |
6498 | ||
6499 | if (globals->use_rel) | |
6500 | { | |
6501 | signed_addend = insn & 0xfff; | |
6502 | if (!(insn & (1 << 23))) | |
6503 | signed_addend = -signed_addend; | |
6504 | } | |
6505 | ||
6506 | relocation = value + signed_addend; | |
6507 | relocation -= (input_section->output_section->vma | |
6508 | + input_section->output_offset | |
6509 | + rel->r_offset); | |
6510 | ||
6511 | value = abs (relocation); | |
6512 | ||
6513 | if (value >= 0x1000) | |
6514 | return bfd_reloc_overflow; | |
6515 | ||
6516 | insn = (insn & 0xff7ff000) | value; | |
6517 | if (relocation >= 0) | |
6518 | insn |= (1 << 23); | |
6519 | ||
6520 | bfd_put_16 (input_bfd, insn >> 16, hit_data); | |
6521 | bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2); | |
6522 | ||
6523 | return bfd_reloc_ok; | |
6524 | } | |
6525 | ||
dfc5f959 | 6526 | case R_ARM_THM_XPC22: |
c19d1205 | 6527 | case R_ARM_THM_CALL: |
bd97cb95 | 6528 | case R_ARM_THM_JUMP24: |
dfc5f959 | 6529 | /* Thumb BL (branch long instruction). */ |
252b5132 | 6530 | { |
b34976b6 | 6531 | bfd_vma relocation; |
e95de063 | 6532 | bfd_vma reloc_sign; |
b34976b6 AM |
6533 | bfd_boolean overflow = FALSE; |
6534 | bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); | |
6535 | bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); | |
e95de063 MS |
6536 | bfd_signed_vma reloc_signed_max; |
6537 | bfd_signed_vma reloc_signed_min; | |
b34976b6 | 6538 | bfd_vma check; |
252b5132 | 6539 | bfd_signed_vma signed_check; |
e95de063 MS |
6540 | int bitsize; |
6541 | int thumb2 = using_thumb2 (globals); | |
252b5132 | 6542 | |
5ab79981 | 6543 | /* A branch to an undefined weak symbol is turned into a jump to |
19540007 JM |
6544 | the next instruction unless a PLT entry will be created. */ |
6545 | if (h && h->root.type == bfd_link_hash_undefweak | |
6546 | && !(splt != NULL && h->plt.offset != (bfd_vma) -1)) | |
5ab79981 PB |
6547 | { |
6548 | bfd_put_16 (input_bfd, 0xe000, hit_data); | |
6549 | bfd_put_16 (input_bfd, 0xbf00, hit_data + 2); | |
6550 | return bfd_reloc_ok; | |
6551 | } | |
6552 | ||
e95de063 MS |
6553 | /* Fetch the addend. We use the Thumb-2 encoding (backwards compatible |
6554 | with Thumb-1) involving the J1 and J2 bits. */ | |
4e7fd91e PB |
6555 | if (globals->use_rel) |
6556 | { | |
e95de063 MS |
6557 | bfd_vma s = (upper_insn & (1 << 10)) >> 10; |
6558 | bfd_vma upper = upper_insn & 0x3ff; | |
6559 | bfd_vma lower = lower_insn & 0x7ff; | |
6560 | bfd_vma j1 = (lower_insn & (1 << 13)) >> 13; | |
6561 | bfd_vma j2 = (lower_insn & (1 << 11)) >> 11; | |
6562 | bfd_vma i1 = j1 ^ s ? 0 : 1; | |
6563 | bfd_vma i2 = j2 ^ s ? 0 : 1; | |
6564 | ||
6565 | addend = (i1 << 23) | (i2 << 22) | (upper << 12) | (lower << 1); | |
6566 | /* Sign extend. */ | |
6567 | addend = (addend | ((s ? 0 : 1) << 24)) - (1 << 24); | |
6568 | ||
4e7fd91e PB |
6569 | signed_addend = addend; |
6570 | } | |
cb1afa5c | 6571 | |
dfc5f959 NC |
6572 | if (r_type == R_ARM_THM_XPC22) |
6573 | { | |
6574 | /* Check for Thumb to Thumb call. */ | |
6575 | /* FIXME: Should we translate the instruction into a BL | |
6576 | instruction instead ? */ | |
6577 | if (sym_flags == STT_ARM_TFUNC) | |
d003868e AM |
6578 | (*_bfd_error_handler) |
6579 | (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."), | |
6580 | input_bfd, | |
6581 | h ? h->root.root.string : "(local)"); | |
dfc5f959 NC |
6582 | } |
6583 | else | |
252b5132 | 6584 | { |
dfc5f959 NC |
6585 | /* If it is not a call to Thumb, assume call to Arm. |
6586 | If it is a call relative to a section name, then it is not a | |
b7693d02 DJ |
6587 | function call at all, but rather a long jump. Calls through |
6588 | the PLT do not require stubs. */ | |
6589 | if (sym_flags != STT_ARM_TFUNC && sym_flags != STT_SECTION | |
6590 | && (h == NULL || splt == NULL | |
6591 | || h->plt.offset == (bfd_vma) -1)) | |
dfc5f959 | 6592 | { |
bd97cb95 | 6593 | if (globals->use_blx && r_type == R_ARM_THM_CALL) |
39b41c9c PB |
6594 | { |
6595 | /* Convert BL to BLX. */ | |
6596 | lower_insn = (lower_insn & ~0x1000) | 0x0800; | |
6597 | } | |
8029a119 NC |
6598 | else if (r_type != R_ARM_THM_CALL) |
6599 | { | |
6600 | if (elf32_thumb_to_arm_stub | |
6601 | (info, sym_name, input_bfd, output_bfd, input_section, | |
6602 | hit_data, sym_sec, rel->r_offset, signed_addend, value, | |
6603 | error_message)) | |
6604 | return bfd_reloc_ok; | |
6605 | else | |
6606 | return bfd_reloc_dangerous; | |
6607 | } | |
da5938a2 | 6608 | } |
bd97cb95 DJ |
6609 | else if (sym_flags == STT_ARM_TFUNC && globals->use_blx |
6610 | && r_type == R_ARM_THM_CALL) | |
39b41c9c PB |
6611 | { |
6612 | /* Make sure this is a BL. */ | |
6613 | lower_insn |= 0x1800; | |
6614 | } | |
252b5132 | 6615 | } |
f21f3fe0 | 6616 | |
b7693d02 DJ |
6617 | /* Handle calls via the PLT. */ |
6618 | if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1) | |
6619 | { | |
6620 | value = (splt->output_section->vma | |
6621 | + splt->output_offset | |
6622 | + h->plt.offset); | |
bd97cb95 | 6623 | if (globals->use_blx && r_type == R_ARM_THM_CALL) |
33bfe774 JB |
6624 | { |
6625 | /* If the Thumb BLX instruction is available, convert the | |
6626 | BL to a BLX instruction to call the ARM-mode PLT entry. */ | |
39b41c9c | 6627 | lower_insn = (lower_insn & ~0x1000) | 0x0800; |
33bfe774 JB |
6628 | } |
6629 | else | |
6630 | /* Target the Thumb stub before the ARM PLT entry. */ | |
6631 | value -= PLT_THUMB_STUB_SIZE; | |
0945cdfd | 6632 | *unresolved_reloc_p = FALSE; |
b7693d02 DJ |
6633 | } |
6634 | ||
906e58ca NC |
6635 | if (r_type == R_ARM_THM_CALL) |
6636 | { | |
6637 | /* Check if a stub has to be inserted because the destination | |
8029a119 | 6638 | is too far. */ |
906e58ca NC |
6639 | bfd_vma from; |
6640 | bfd_signed_vma branch_offset; | |
6641 | struct elf32_arm_stub_hash_entry *stub_entry = NULL; | |
6642 | ||
6643 | from = (input_section->output_section->vma | |
6644 | + input_section->output_offset | |
6645 | + rel->r_offset); | |
6646 | branch_offset = (bfd_signed_vma)(value - from); | |
6647 | ||
6648 | if ((!thumb2 | |
6649 | && (branch_offset > THM_MAX_FWD_BRANCH_OFFSET | |
6650 | || (branch_offset < THM_MAX_BWD_BRANCH_OFFSET))) | |
6651 | || | |
6652 | (thumb2 | |
6653 | && (branch_offset > THM2_MAX_FWD_BRANCH_OFFSET | |
f4ac8484 DJ |
6654 | || (branch_offset < THM2_MAX_BWD_BRANCH_OFFSET))) |
6655 | || ((sym_flags != STT_ARM_TFUNC) && !globals->use_blx)) | |
906e58ca NC |
6656 | { |
6657 | /* The target is out of reach or we are changing modes, so | |
6658 | redirect the branch to the local stub for this | |
6659 | function. */ | |
6660 | stub_entry = elf32_arm_get_stub_entry (input_section, | |
6661 | sym_sec, h, | |
6662 | rel, globals); | |
6663 | if (stub_entry != NULL) | |
6664 | value = (stub_entry->stub_offset | |
6665 | + stub_entry->stub_sec->output_offset | |
6666 | + stub_entry->stub_sec->output_section->vma); | |
6667 | ||
f4ac8484 DJ |
6668 | /* If this call becomes a call to Arm, force BLX. */ |
6669 | if (globals->use_blx) | |
6670 | { | |
6671 | if ((stub_entry | |
6672 | && !arm_stub_is_thumb (stub_entry->stub_type)) | |
6673 | || (sym_flags != STT_ARM_TFUNC)) | |
6674 | lower_insn = (lower_insn & ~0x1000) | 0x0800; | |
6675 | } | |
906e58ca NC |
6676 | } |
6677 | } | |
6678 | ||
ba96a88f | 6679 | relocation = value + signed_addend; |
f21f3fe0 | 6680 | |
252b5132 | 6681 | relocation -= (input_section->output_section->vma |
ba96a88f NC |
6682 | + input_section->output_offset |
6683 | + rel->r_offset); | |
9a5aca8c | 6684 | |
252b5132 RH |
6685 | check = relocation >> howto->rightshift; |
6686 | ||
6687 | /* If this is a signed value, the rightshift just dropped | |
6688 | leading 1 bits (assuming twos complement). */ | |
6689 | if ((bfd_signed_vma) relocation >= 0) | |
6690 | signed_check = check; | |
6691 | else | |
6692 | signed_check = check | ~((bfd_vma) -1 >> howto->rightshift); | |
6693 | ||
e95de063 MS |
6694 | /* Calculate the permissable maximum and minimum values for |
6695 | this relocation according to whether we're relocating for | |
6696 | Thumb-2 or not. */ | |
6697 | bitsize = howto->bitsize; | |
6698 | if (!thumb2) | |
6699 | bitsize -= 2; | |
6700 | reloc_signed_max = ((1 << (bitsize - 1)) - 1) >> howto->rightshift; | |
6701 | reloc_signed_min = ~reloc_signed_max; | |
6702 | ||
252b5132 | 6703 | /* Assumes two's complement. */ |
ba96a88f | 6704 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) |
b34976b6 | 6705 | overflow = TRUE; |
252b5132 | 6706 | |
bd97cb95 | 6707 | if ((lower_insn & 0x5000) == 0x4000) |
c62e1cc3 NC |
6708 | /* For a BLX instruction, make sure that the relocation is rounded up |
6709 | to a word boundary. This follows the semantics of the instruction | |
6710 | which specifies that bit 1 of the target address will come from bit | |
6711 | 1 of the base address. */ | |
6712 | relocation = (relocation + 2) & ~ 3; | |
cb1afa5c | 6713 | |
e95de063 MS |
6714 | /* Put RELOCATION back into the insn. Assumes two's complement. |
6715 | We use the Thumb-2 encoding, which is safe even if dealing with | |
6716 | a Thumb-1 instruction by virtue of our overflow check above. */ | |
6717 | reloc_sign = (signed_check < 0) ? 1 : 0; | |
6718 | upper_insn = (upper_insn & ~(bfd_vma) 0x7ff) | |
6719 | | ((relocation >> 12) & 0x3ff) | |
6720 | | (reloc_sign << 10); | |
906e58ca | 6721 | lower_insn = (lower_insn & ~(bfd_vma) 0x2fff) |
e95de063 MS |
6722 | | (((!((relocation >> 23) & 1)) ^ reloc_sign) << 13) |
6723 | | (((!((relocation >> 22) & 1)) ^ reloc_sign) << 11) | |
6724 | | ((relocation >> 1) & 0x7ff); | |
c62e1cc3 | 6725 | |
252b5132 RH |
6726 | /* Put the relocated value back in the object file: */ |
6727 | bfd_put_16 (input_bfd, upper_insn, hit_data); | |
6728 | bfd_put_16 (input_bfd, lower_insn, hit_data + 2); | |
6729 | ||
6730 | return (overflow ? bfd_reloc_overflow : bfd_reloc_ok); | |
6731 | } | |
6732 | break; | |
6733 | ||
c19d1205 ZW |
6734 | case R_ARM_THM_JUMP19: |
6735 | /* Thumb32 conditional branch instruction. */ | |
6736 | { | |
6737 | bfd_vma relocation; | |
6738 | bfd_boolean overflow = FALSE; | |
6739 | bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); | |
6740 | bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); | |
a00a1f35 MS |
6741 | bfd_signed_vma reloc_signed_max = 0xffffe; |
6742 | bfd_signed_vma reloc_signed_min = -0x100000; | |
c19d1205 ZW |
6743 | bfd_signed_vma signed_check; |
6744 | ||
6745 | /* Need to refetch the addend, reconstruct the top three bits, | |
6746 | and squish the two 11 bit pieces together. */ | |
6747 | if (globals->use_rel) | |
6748 | { | |
6749 | bfd_vma S = (upper_insn & 0x0400) >> 10; | |
a00a1f35 | 6750 | bfd_vma upper = (upper_insn & 0x003f); |
c19d1205 ZW |
6751 | bfd_vma J1 = (lower_insn & 0x2000) >> 13; |
6752 | bfd_vma J2 = (lower_insn & 0x0800) >> 11; | |
6753 | bfd_vma lower = (lower_insn & 0x07ff); | |
6754 | ||
a00a1f35 MS |
6755 | upper |= J1 << 6; |
6756 | upper |= J2 << 7; | |
6757 | upper |= (!S) << 8; | |
c19d1205 ZW |
6758 | upper -= 0x0100; /* Sign extend. */ |
6759 | ||
6760 | addend = (upper << 12) | (lower << 1); | |
6761 | signed_addend = addend; | |
6762 | } | |
6763 | ||
bd97cb95 DJ |
6764 | /* Handle calls via the PLT. */ |
6765 | if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1) | |
6766 | { | |
6767 | value = (splt->output_section->vma | |
6768 | + splt->output_offset | |
6769 | + h->plt.offset); | |
6770 | /* Target the Thumb stub before the ARM PLT entry. */ | |
6771 | value -= PLT_THUMB_STUB_SIZE; | |
6772 | *unresolved_reloc_p = FALSE; | |
6773 | } | |
6774 | ||
c19d1205 ZW |
6775 | /* ??? Should handle interworking? GCC might someday try to |
6776 | use this for tail calls. */ | |
6777 | ||
6778 | relocation = value + signed_addend; | |
6779 | relocation -= (input_section->output_section->vma | |
6780 | + input_section->output_offset | |
6781 | + rel->r_offset); | |
a00a1f35 | 6782 | signed_check = (bfd_signed_vma) relocation; |
c19d1205 | 6783 | |
c19d1205 ZW |
6784 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) |
6785 | overflow = TRUE; | |
6786 | ||
6787 | /* Put RELOCATION back into the insn. */ | |
6788 | { | |
6789 | bfd_vma S = (relocation & 0x00100000) >> 20; | |
6790 | bfd_vma J2 = (relocation & 0x00080000) >> 19; | |
6791 | bfd_vma J1 = (relocation & 0x00040000) >> 18; | |
6792 | bfd_vma hi = (relocation & 0x0003f000) >> 12; | |
6793 | bfd_vma lo = (relocation & 0x00000ffe) >> 1; | |
6794 | ||
a00a1f35 | 6795 | upper_insn = (upper_insn & 0xfbc0) | (S << 10) | hi; |
c19d1205 ZW |
6796 | lower_insn = (lower_insn & 0xd000) | (J1 << 13) | (J2 << 11) | lo; |
6797 | } | |
6798 | ||
6799 | /* Put the relocated value back in the object file: */ | |
6800 | bfd_put_16 (input_bfd, upper_insn, hit_data); | |
6801 | bfd_put_16 (input_bfd, lower_insn, hit_data + 2); | |
6802 | ||
6803 | return (overflow ? bfd_reloc_overflow : bfd_reloc_ok); | |
6804 | } | |
6805 | ||
6806 | case R_ARM_THM_JUMP11: | |
6807 | case R_ARM_THM_JUMP8: | |
6808 | case R_ARM_THM_JUMP6: | |
51c5503b NC |
6809 | /* Thumb B (branch) instruction). */ |
6810 | { | |
6cf9e9fe | 6811 | bfd_signed_vma relocation; |
51c5503b NC |
6812 | bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1; |
6813 | bfd_signed_vma reloc_signed_min = ~ reloc_signed_max; | |
51c5503b NC |
6814 | bfd_signed_vma signed_check; |
6815 | ||
c19d1205 ZW |
6816 | /* CZB cannot jump backward. */ |
6817 | if (r_type == R_ARM_THM_JUMP6) | |
6818 | reloc_signed_min = 0; | |
6819 | ||
4e7fd91e | 6820 | if (globals->use_rel) |
6cf9e9fe | 6821 | { |
4e7fd91e PB |
6822 | /* Need to refetch addend. */ |
6823 | addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask; | |
6824 | if (addend & ((howto->src_mask + 1) >> 1)) | |
6825 | { | |
6826 | signed_addend = -1; | |
6827 | signed_addend &= ~ howto->src_mask; | |
6828 | signed_addend |= addend; | |
6829 | } | |
6830 | else | |
6831 | signed_addend = addend; | |
6832 | /* The value in the insn has been right shifted. We need to | |
6833 | undo this, so that we can perform the address calculation | |
6834 | in terms of bytes. */ | |
6835 | signed_addend <<= howto->rightshift; | |
6cf9e9fe | 6836 | } |
6cf9e9fe | 6837 | relocation = value + signed_addend; |
51c5503b NC |
6838 | |
6839 | relocation -= (input_section->output_section->vma | |
6840 | + input_section->output_offset | |
6841 | + rel->r_offset); | |
6842 | ||
6cf9e9fe NC |
6843 | relocation >>= howto->rightshift; |
6844 | signed_check = relocation; | |
c19d1205 ZW |
6845 | |
6846 | if (r_type == R_ARM_THM_JUMP6) | |
6847 | relocation = ((relocation & 0x0020) << 4) | ((relocation & 0x001f) << 3); | |
6848 | else | |
6849 | relocation &= howto->dst_mask; | |
51c5503b | 6850 | relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask)); |
cedb70c5 | 6851 | |
51c5503b NC |
6852 | bfd_put_16 (input_bfd, relocation, hit_data); |
6853 | ||
6854 | /* Assumes two's complement. */ | |
6855 | if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) | |
6856 | return bfd_reloc_overflow; | |
6857 | ||
6858 | return bfd_reloc_ok; | |
6859 | } | |
cedb70c5 | 6860 | |
8375c36b PB |
6861 | case R_ARM_ALU_PCREL7_0: |
6862 | case R_ARM_ALU_PCREL15_8: | |
6863 | case R_ARM_ALU_PCREL23_15: | |
6864 | { | |
6865 | bfd_vma insn; | |
6866 | bfd_vma relocation; | |
6867 | ||
6868 | insn = bfd_get_32 (input_bfd, hit_data); | |
4e7fd91e PB |
6869 | if (globals->use_rel) |
6870 | { | |
6871 | /* Extract the addend. */ | |
6872 | addend = (insn & 0xff) << ((insn & 0xf00) >> 7); | |
6873 | signed_addend = addend; | |
6874 | } | |
8375c36b PB |
6875 | relocation = value + signed_addend; |
6876 | ||
6877 | relocation -= (input_section->output_section->vma | |
6878 | + input_section->output_offset | |
6879 | + rel->r_offset); | |
6880 | insn = (insn & ~0xfff) | |
6881 | | ((howto->bitpos << 7) & 0xf00) | |
6882 | | ((relocation >> howto->bitpos) & 0xff); | |
6883 | bfd_put_32 (input_bfd, value, hit_data); | |
6884 | } | |
6885 | return bfd_reloc_ok; | |
6886 | ||
252b5132 RH |
6887 | case R_ARM_GNU_VTINHERIT: |
6888 | case R_ARM_GNU_VTENTRY: | |
6889 | return bfd_reloc_ok; | |
6890 | ||
c19d1205 | 6891 | case R_ARM_GOTOFF32: |
252b5132 RH |
6892 | /* Relocation is relative to the start of the |
6893 | global offset table. */ | |
6894 | ||
6895 | BFD_ASSERT (sgot != NULL); | |
6896 | if (sgot == NULL) | |
6897 | return bfd_reloc_notsupported; | |
9a5aca8c | 6898 | |
cedb70c5 | 6899 | /* If we are addressing a Thumb function, we need to adjust the |
ee29b9fb RE |
6900 | address by one, so that attempts to call the function pointer will |
6901 | correctly interpret it as Thumb code. */ | |
6902 | if (sym_flags == STT_ARM_TFUNC) | |
6903 | value += 1; | |
6904 | ||
252b5132 RH |
6905 | /* Note that sgot->output_offset is not involved in this |
6906 | calculation. We always want the start of .got. If we | |
6907 | define _GLOBAL_OFFSET_TABLE in a different way, as is | |
6908 | permitted by the ABI, we might have to change this | |
9b485d32 | 6909 | calculation. */ |
252b5132 | 6910 | value -= sgot->output_section->vma; |
f21f3fe0 | 6911 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 | 6912 | contents, rel->r_offset, value, |
00a97672 | 6913 | rel->r_addend); |
252b5132 RH |
6914 | |
6915 | case R_ARM_GOTPC: | |
a7c10850 | 6916 | /* Use global offset table as symbol value. */ |
252b5132 | 6917 | BFD_ASSERT (sgot != NULL); |
f21f3fe0 | 6918 | |
252b5132 RH |
6919 | if (sgot == NULL) |
6920 | return bfd_reloc_notsupported; | |
6921 | ||
0945cdfd | 6922 | *unresolved_reloc_p = FALSE; |
252b5132 | 6923 | value = sgot->output_section->vma; |
f21f3fe0 | 6924 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 | 6925 | contents, rel->r_offset, value, |
00a97672 | 6926 | rel->r_addend); |
f21f3fe0 | 6927 | |
252b5132 | 6928 | case R_ARM_GOT32: |
eb043451 | 6929 | case R_ARM_GOT_PREL: |
252b5132 | 6930 | /* Relocation is to the entry for this symbol in the |
9b485d32 | 6931 | global offset table. */ |
252b5132 RH |
6932 | if (sgot == NULL) |
6933 | return bfd_reloc_notsupported; | |
f21f3fe0 | 6934 | |
252b5132 RH |
6935 | if (h != NULL) |
6936 | { | |
6937 | bfd_vma off; | |
5e681ec4 | 6938 | bfd_boolean dyn; |
f21f3fe0 | 6939 | |
252b5132 RH |
6940 | off = h->got.offset; |
6941 | BFD_ASSERT (off != (bfd_vma) -1); | |
5e681ec4 | 6942 | dyn = globals->root.dynamic_sections_created; |
f21f3fe0 | 6943 | |
5e681ec4 | 6944 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
50d6c878 | 6945 | || (info->shared |
5e681ec4 PB |
6946 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
6947 | || (ELF_ST_VISIBILITY (h->other) | |
6948 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
6949 | { |
6950 | /* This is actually a static link, or it is a -Bsymbolic link | |
6951 | and the symbol is defined locally. We must initialize this | |
6952 | entry in the global offset table. Since the offset must | |
6953 | always be a multiple of 4, we use the least significant bit | |
6954 | to record whether we have initialized it already. | |
f21f3fe0 | 6955 | |
00a97672 | 6956 | When doing a dynamic link, we create a .rel(a).got relocation |
f21f3fe0 | 6957 | entry to initialize the value. This is done in the |
9b485d32 | 6958 | finish_dynamic_symbol routine. */ |
252b5132 RH |
6959 | if ((off & 1) != 0) |
6960 | off &= ~1; | |
6961 | else | |
6962 | { | |
ee29b9fb RE |
6963 | /* If we are addressing a Thumb function, we need to |
6964 | adjust the address by one, so that attempts to | |
6965 | call the function pointer will correctly | |
6966 | interpret it as Thumb code. */ | |
6967 | if (sym_flags == STT_ARM_TFUNC) | |
6968 | value |= 1; | |
6969 | ||
252b5132 RH |
6970 | bfd_put_32 (output_bfd, value, sgot->contents + off); |
6971 | h->got.offset |= 1; | |
6972 | } | |
6973 | } | |
0945cdfd DJ |
6974 | else |
6975 | *unresolved_reloc_p = FALSE; | |
f21f3fe0 | 6976 | |
252b5132 RH |
6977 | value = sgot->output_offset + off; |
6978 | } | |
6979 | else | |
6980 | { | |
6981 | bfd_vma off; | |
f21f3fe0 | 6982 | |
252b5132 RH |
6983 | BFD_ASSERT (local_got_offsets != NULL && |
6984 | local_got_offsets[r_symndx] != (bfd_vma) -1); | |
f21f3fe0 | 6985 | |
252b5132 | 6986 | off = local_got_offsets[r_symndx]; |
f21f3fe0 | 6987 | |
252b5132 RH |
6988 | /* The offset must always be a multiple of 4. We use the |
6989 | least significant bit to record whether we have already | |
9b485d32 | 6990 | generated the necessary reloc. */ |
252b5132 RH |
6991 | if ((off & 1) != 0) |
6992 | off &= ~1; | |
6993 | else | |
6994 | { | |
b7693d02 DJ |
6995 | /* If we are addressing a Thumb function, we need to |
6996 | adjust the address by one, so that attempts to | |
6997 | call the function pointer will correctly | |
6998 | interpret it as Thumb code. */ | |
6999 | if (sym_flags == STT_ARM_TFUNC) | |
7000 | value |= 1; | |
7001 | ||
00a97672 RS |
7002 | if (globals->use_rel) |
7003 | bfd_put_32 (output_bfd, value, sgot->contents + off); | |
f21f3fe0 | 7004 | |
252b5132 RH |
7005 | if (info->shared) |
7006 | { | |
7007 | asection * srelgot; | |
947216bf AM |
7008 | Elf_Internal_Rela outrel; |
7009 | bfd_byte *loc; | |
f21f3fe0 | 7010 | |
00a97672 RS |
7011 | srelgot = (bfd_get_section_by_name |
7012 | (dynobj, RELOC_SECTION (globals, ".got"))); | |
252b5132 | 7013 | BFD_ASSERT (srelgot != NULL); |
f21f3fe0 | 7014 | |
00a97672 | 7015 | outrel.r_addend = addend + value; |
252b5132 | 7016 | outrel.r_offset = (sgot->output_section->vma |
f21f3fe0 | 7017 | + sgot->output_offset |
252b5132 RH |
7018 | + off); |
7019 | outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); | |
947216bf | 7020 | loc = srelgot->contents; |
00a97672 RS |
7021 | loc += srelgot->reloc_count++ * RELOC_SIZE (globals); |
7022 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
252b5132 | 7023 | } |
f21f3fe0 | 7024 | |
252b5132 RH |
7025 | local_got_offsets[r_symndx] |= 1; |
7026 | } | |
f21f3fe0 | 7027 | |
252b5132 RH |
7028 | value = sgot->output_offset + off; |
7029 | } | |
eb043451 PB |
7030 | if (r_type != R_ARM_GOT32) |
7031 | value += sgot->output_section->vma; | |
9a5aca8c | 7032 | |
f21f3fe0 | 7033 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
99e4ae17 | 7034 | contents, rel->r_offset, value, |
00a97672 | 7035 | rel->r_addend); |
f21f3fe0 | 7036 | |
ba93b8ac DJ |
7037 | case R_ARM_TLS_LDO32: |
7038 | value = value - dtpoff_base (info); | |
7039 | ||
7040 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
00a97672 RS |
7041 | contents, rel->r_offset, value, |
7042 | rel->r_addend); | |
ba93b8ac DJ |
7043 | |
7044 | case R_ARM_TLS_LDM32: | |
7045 | { | |
7046 | bfd_vma off; | |
7047 | ||
7048 | if (globals->sgot == NULL) | |
7049 | abort (); | |
7050 | ||
7051 | off = globals->tls_ldm_got.offset; | |
7052 | ||
7053 | if ((off & 1) != 0) | |
7054 | off &= ~1; | |
7055 | else | |
7056 | { | |
7057 | /* If we don't know the module number, create a relocation | |
7058 | for it. */ | |
7059 | if (info->shared) | |
7060 | { | |
7061 | Elf_Internal_Rela outrel; | |
7062 | bfd_byte *loc; | |
7063 | ||
7064 | if (globals->srelgot == NULL) | |
7065 | abort (); | |
7066 | ||
00a97672 | 7067 | outrel.r_addend = 0; |
ba93b8ac DJ |
7068 | outrel.r_offset = (globals->sgot->output_section->vma |
7069 | + globals->sgot->output_offset + off); | |
7070 | outrel.r_info = ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32); | |
7071 | ||
00a97672 RS |
7072 | if (globals->use_rel) |
7073 | bfd_put_32 (output_bfd, outrel.r_addend, | |
7074 | globals->sgot->contents + off); | |
ba93b8ac DJ |
7075 | |
7076 | loc = globals->srelgot->contents; | |
00a97672 RS |
7077 | loc += globals->srelgot->reloc_count++ * RELOC_SIZE (globals); |
7078 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
ba93b8ac DJ |
7079 | } |
7080 | else | |
7081 | bfd_put_32 (output_bfd, 1, globals->sgot->contents + off); | |
7082 | ||
7083 | globals->tls_ldm_got.offset |= 1; | |
7084 | } | |
7085 | ||
906e58ca | 7086 | value = globals->sgot->output_section->vma + globals->sgot->output_offset + off |
ba93b8ac DJ |
7087 | - (input_section->output_section->vma + input_section->output_offset + rel->r_offset); |
7088 | ||
7089 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
7090 | contents, rel->r_offset, value, | |
00a97672 | 7091 | rel->r_addend); |
ba93b8ac DJ |
7092 | } |
7093 | ||
7094 | case R_ARM_TLS_GD32: | |
7095 | case R_ARM_TLS_IE32: | |
7096 | { | |
7097 | bfd_vma off; | |
7098 | int indx; | |
7099 | char tls_type; | |
7100 | ||
7101 | if (globals->sgot == NULL) | |
7102 | abort (); | |
7103 | ||
7104 | indx = 0; | |
7105 | if (h != NULL) | |
7106 | { | |
7107 | bfd_boolean dyn; | |
7108 | dyn = globals->root.dynamic_sections_created; | |
7109 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
7110 | && (!info->shared | |
7111 | || !SYMBOL_REFERENCES_LOCAL (info, h))) | |
7112 | { | |
7113 | *unresolved_reloc_p = FALSE; | |
7114 | indx = h->dynindx; | |
7115 | } | |
7116 | off = h->got.offset; | |
7117 | tls_type = ((struct elf32_arm_link_hash_entry *) h)->tls_type; | |
7118 | } | |
7119 | else | |
7120 | { | |
7121 | if (local_got_offsets == NULL) | |
7122 | abort (); | |
7123 | off = local_got_offsets[r_symndx]; | |
7124 | tls_type = elf32_arm_local_got_tls_type (input_bfd)[r_symndx]; | |
7125 | } | |
7126 | ||
7127 | if (tls_type == GOT_UNKNOWN) | |
7128 | abort (); | |
7129 | ||
7130 | if ((off & 1) != 0) | |
7131 | off &= ~1; | |
7132 | else | |
7133 | { | |
7134 | bfd_boolean need_relocs = FALSE; | |
7135 | Elf_Internal_Rela outrel; | |
7136 | bfd_byte *loc = NULL; | |
7137 | int cur_off = off; | |
7138 | ||
7139 | /* The GOT entries have not been initialized yet. Do it | |
7140 | now, and emit any relocations. If both an IE GOT and a | |
7141 | GD GOT are necessary, we emit the GD first. */ | |
7142 | ||
7143 | if ((info->shared || indx != 0) | |
7144 | && (h == NULL | |
7145 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7146 | || h->root.type != bfd_link_hash_undefweak)) | |
7147 | { | |
7148 | need_relocs = TRUE; | |
7149 | if (globals->srelgot == NULL) | |
7150 | abort (); | |
7151 | loc = globals->srelgot->contents; | |
00a97672 | 7152 | loc += globals->srelgot->reloc_count * RELOC_SIZE (globals); |
ba93b8ac DJ |
7153 | } |
7154 | ||
7155 | if (tls_type & GOT_TLS_GD) | |
7156 | { | |
7157 | if (need_relocs) | |
7158 | { | |
00a97672 | 7159 | outrel.r_addend = 0; |
ba93b8ac | 7160 | outrel.r_offset = (globals->sgot->output_section->vma |
00a97672 RS |
7161 | + globals->sgot->output_offset |
7162 | + cur_off); | |
ba93b8ac | 7163 | outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DTPMOD32); |
ba93b8ac | 7164 | |
00a97672 RS |
7165 | if (globals->use_rel) |
7166 | bfd_put_32 (output_bfd, outrel.r_addend, | |
7167 | globals->sgot->contents + cur_off); | |
7168 | ||
7169 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
ba93b8ac | 7170 | globals->srelgot->reloc_count++; |
00a97672 | 7171 | loc += RELOC_SIZE (globals); |
ba93b8ac DJ |
7172 | |
7173 | if (indx == 0) | |
7174 | bfd_put_32 (output_bfd, value - dtpoff_base (info), | |
7175 | globals->sgot->contents + cur_off + 4); | |
7176 | else | |
7177 | { | |
00a97672 | 7178 | outrel.r_addend = 0; |
ba93b8ac DJ |
7179 | outrel.r_info = ELF32_R_INFO (indx, |
7180 | R_ARM_TLS_DTPOFF32); | |
7181 | outrel.r_offset += 4; | |
00a97672 RS |
7182 | |
7183 | if (globals->use_rel) | |
7184 | bfd_put_32 (output_bfd, outrel.r_addend, | |
7185 | globals->sgot->contents + cur_off + 4); | |
7186 | ||
7187 | ||
7188 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); | |
ba93b8ac | 7189 | globals->srelgot->reloc_count++; |
00a97672 | 7190 | loc += RELOC_SIZE (globals); |
ba93b8ac DJ |
7191 | } |
7192 | } | |
7193 | else | |
7194 | { | |
7195 | /* If we are not emitting relocations for a | |
7196 | general dynamic reference, then we must be in a | |
7197 | static link or an executable link with the | |
7198 | symbol binding locally. Mark it as belonging | |
7199 | to module 1, the executable. */ | |
7200 | bfd_put_32 (output_bfd, 1, | |
7201 | globals->sgot->contents + cur_off); | |
7202 | bfd_put_32 (output_bfd, value - dtpoff_base (info), | |
7203 | globals->sgot->contents + cur_off + 4); | |
7204 | } | |
7205 | ||
7206 | cur_off += 8; | |
7207 | } | |
7208 | ||
7209 | if (tls_type & GOT_TLS_IE) | |
7210 | { | |
7211 | if (need_relocs) | |
7212 | { | |
00a97672 RS |
7213 | if (indx == 0) |
7214 | outrel.r_addend = value - dtpoff_base (info); | |
7215 | else | |
7216 | outrel.r_addend = 0; | |
ba93b8ac DJ |
7217 | outrel.r_offset = (globals->sgot->output_section->vma |
7218 | + globals->sgot->output_offset | |
7219 | + cur_off); | |
7220 | outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_TPOFF32); | |
7221 | ||
00a97672 RS |
7222 | if (globals->use_rel) |
7223 | bfd_put_32 (output_bfd, outrel.r_addend, | |
ba93b8ac DJ |
7224 | globals->sgot->contents + cur_off); |
7225 | ||
00a97672 | 7226 | SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); |
ba93b8ac | 7227 | globals->srelgot->reloc_count++; |
00a97672 | 7228 | loc += RELOC_SIZE (globals); |
ba93b8ac DJ |
7229 | } |
7230 | else | |
7231 | bfd_put_32 (output_bfd, tpoff (info, value), | |
7232 | globals->sgot->contents + cur_off); | |
7233 | cur_off += 4; | |
7234 | } | |
7235 | ||
7236 | if (h != NULL) | |
7237 | h->got.offset |= 1; | |
7238 | else | |
7239 | local_got_offsets[r_symndx] |= 1; | |
7240 | } | |
7241 | ||
7242 | if ((tls_type & GOT_TLS_GD) && r_type != R_ARM_TLS_GD32) | |
7243 | off += 8; | |
906e58ca | 7244 | value = globals->sgot->output_section->vma + globals->sgot->output_offset + off |
ba93b8ac DJ |
7245 | - (input_section->output_section->vma + input_section->output_offset + rel->r_offset); |
7246 | ||
7247 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
7248 | contents, rel->r_offset, value, | |
00a97672 | 7249 | rel->r_addend); |
ba93b8ac DJ |
7250 | } |
7251 | ||
7252 | case R_ARM_TLS_LE32: | |
7253 | if (info->shared) | |
7254 | { | |
7255 | (*_bfd_error_handler) | |
7256 | (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"), | |
7257 | input_bfd, input_section, | |
7258 | (long) rel->r_offset, howto->name); | |
906e58ca | 7259 | return FALSE; |
ba93b8ac DJ |
7260 | } |
7261 | else | |
7262 | value = tpoff (info, value); | |
906e58ca | 7263 | |
ba93b8ac | 7264 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
00a97672 RS |
7265 | contents, rel->r_offset, value, |
7266 | rel->r_addend); | |
ba93b8ac | 7267 | |
319850b4 JB |
7268 | case R_ARM_V4BX: |
7269 | if (globals->fix_v4bx) | |
845b51d6 PB |
7270 | { |
7271 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
319850b4 | 7272 | |
845b51d6 PB |
7273 | /* Ensure that we have a BX instruction. */ |
7274 | BFD_ASSERT ((insn & 0x0ffffff0) == 0x012fff10); | |
319850b4 | 7275 | |
845b51d6 PB |
7276 | if (globals->fix_v4bx == 2 && (insn & 0xf) != 0xf) |
7277 | { | |
7278 | /* Branch to veneer. */ | |
7279 | bfd_vma glue_addr; | |
7280 | glue_addr = elf32_arm_bx_glue (info, insn & 0xf); | |
7281 | glue_addr -= input_section->output_section->vma | |
7282 | + input_section->output_offset | |
7283 | + rel->r_offset + 8; | |
7284 | insn = (insn & 0xf0000000) | 0x0a000000 | |
7285 | | ((glue_addr >> 2) & 0x00ffffff); | |
7286 | } | |
7287 | else | |
7288 | { | |
7289 | /* Preserve Rm (lowest four bits) and the condition code | |
7290 | (highest four bits). Other bits encode MOV PC,Rm. */ | |
7291 | insn = (insn & 0xf000000f) | 0x01a0f000; | |
7292 | } | |
319850b4 | 7293 | |
845b51d6 PB |
7294 | bfd_put_32 (input_bfd, insn, hit_data); |
7295 | } | |
319850b4 JB |
7296 | return bfd_reloc_ok; |
7297 | ||
b6895b4f PB |
7298 | case R_ARM_MOVW_ABS_NC: |
7299 | case R_ARM_MOVT_ABS: | |
7300 | case R_ARM_MOVW_PREL_NC: | |
7301 | case R_ARM_MOVT_PREL: | |
92f5d02b MS |
7302 | /* Until we properly support segment-base-relative addressing then |
7303 | we assume the segment base to be zero, as for the group relocations. | |
7304 | Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC | |
7305 | and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS. */ | |
7306 | case R_ARM_MOVW_BREL_NC: | |
7307 | case R_ARM_MOVW_BREL: | |
7308 | case R_ARM_MOVT_BREL: | |
b6895b4f PB |
7309 | { |
7310 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
7311 | ||
7312 | if (globals->use_rel) | |
7313 | { | |
7314 | addend = ((insn >> 4) & 0xf000) | (insn & 0xfff); | |
39623e12 | 7315 | signed_addend = (addend ^ 0x8000) - 0x8000; |
b6895b4f | 7316 | } |
92f5d02b | 7317 | |
b6895b4f | 7318 | value += signed_addend; |
b6895b4f PB |
7319 | |
7320 | if (r_type == R_ARM_MOVW_PREL_NC || r_type == R_ARM_MOVT_PREL) | |
7321 | value -= (input_section->output_section->vma | |
7322 | + input_section->output_offset + rel->r_offset); | |
7323 | ||
92f5d02b MS |
7324 | if (r_type == R_ARM_MOVW_BREL && value >= 0x10000) |
7325 | return bfd_reloc_overflow; | |
7326 | ||
7327 | if (sym_flags == STT_ARM_TFUNC) | |
7328 | value |= 1; | |
7329 | ||
7330 | if (r_type == R_ARM_MOVT_ABS || r_type == R_ARM_MOVT_PREL | |
7331 | || r_type == R_ARM_MOVT_BREL) | |
b6895b4f PB |
7332 | value >>= 16; |
7333 | ||
7334 | insn &= 0xfff0f000; | |
7335 | insn |= value & 0xfff; | |
7336 | insn |= (value & 0xf000) << 4; | |
7337 | bfd_put_32 (input_bfd, insn, hit_data); | |
7338 | } | |
7339 | return bfd_reloc_ok; | |
7340 | ||
7341 | case R_ARM_THM_MOVW_ABS_NC: | |
7342 | case R_ARM_THM_MOVT_ABS: | |
7343 | case R_ARM_THM_MOVW_PREL_NC: | |
7344 | case R_ARM_THM_MOVT_PREL: | |
92f5d02b MS |
7345 | /* Until we properly support segment-base-relative addressing then |
7346 | we assume the segment base to be zero, as for the above relocations. | |
7347 | Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as | |
7348 | R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics | |
7349 | as R_ARM_THM_MOVT_ABS. */ | |
7350 | case R_ARM_THM_MOVW_BREL_NC: | |
7351 | case R_ARM_THM_MOVW_BREL: | |
7352 | case R_ARM_THM_MOVT_BREL: | |
b6895b4f PB |
7353 | { |
7354 | bfd_vma insn; | |
906e58ca | 7355 | |
b6895b4f PB |
7356 | insn = bfd_get_16 (input_bfd, hit_data) << 16; |
7357 | insn |= bfd_get_16 (input_bfd, hit_data + 2); | |
7358 | ||
7359 | if (globals->use_rel) | |
7360 | { | |
7361 | addend = ((insn >> 4) & 0xf000) | |
7362 | | ((insn >> 15) & 0x0800) | |
7363 | | ((insn >> 4) & 0x0700) | |
7364 | | (insn & 0x00ff); | |
39623e12 | 7365 | signed_addend = (addend ^ 0x8000) - 0x8000; |
b6895b4f | 7366 | } |
92f5d02b | 7367 | |
b6895b4f | 7368 | value += signed_addend; |
b6895b4f PB |
7369 | |
7370 | if (r_type == R_ARM_THM_MOVW_PREL_NC || r_type == R_ARM_THM_MOVT_PREL) | |
7371 | value -= (input_section->output_section->vma | |
7372 | + input_section->output_offset + rel->r_offset); | |
7373 | ||
92f5d02b MS |
7374 | if (r_type == R_ARM_THM_MOVW_BREL && value >= 0x10000) |
7375 | return bfd_reloc_overflow; | |
7376 | ||
7377 | if (sym_flags == STT_ARM_TFUNC) | |
7378 | value |= 1; | |
7379 | ||
7380 | if (r_type == R_ARM_THM_MOVT_ABS || r_type == R_ARM_THM_MOVT_PREL | |
7381 | || r_type == R_ARM_THM_MOVT_BREL) | |
b6895b4f PB |
7382 | value >>= 16; |
7383 | ||
7384 | insn &= 0xfbf08f00; | |
7385 | insn |= (value & 0xf000) << 4; | |
7386 | insn |= (value & 0x0800) << 15; | |
7387 | insn |= (value & 0x0700) << 4; | |
7388 | insn |= (value & 0x00ff); | |
7389 | ||
7390 | bfd_put_16 (input_bfd, insn >> 16, hit_data); | |
7391 | bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2); | |
7392 | } | |
7393 | return bfd_reloc_ok; | |
7394 | ||
4962c51a MS |
7395 | case R_ARM_ALU_PC_G0_NC: |
7396 | case R_ARM_ALU_PC_G1_NC: | |
7397 | case R_ARM_ALU_PC_G0: | |
7398 | case R_ARM_ALU_PC_G1: | |
7399 | case R_ARM_ALU_PC_G2: | |
7400 | case R_ARM_ALU_SB_G0_NC: | |
7401 | case R_ARM_ALU_SB_G1_NC: | |
7402 | case R_ARM_ALU_SB_G0: | |
7403 | case R_ARM_ALU_SB_G1: | |
7404 | case R_ARM_ALU_SB_G2: | |
7405 | { | |
7406 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
7407 | bfd_vma pc = input_section->output_section->vma | |
7408 | + input_section->output_offset + rel->r_offset; | |
7409 | /* sb should be the origin of the *segment* containing the symbol. | |
7410 | It is not clear how to obtain this OS-dependent value, so we | |
7411 | make an arbitrary choice of zero. */ | |
7412 | bfd_vma sb = 0; | |
7413 | bfd_vma residual; | |
7414 | bfd_vma g_n; | |
7415 | bfd_signed_vma signed_value; | |
7416 | int group = 0; | |
7417 | ||
7418 | /* Determine which group of bits to select. */ | |
7419 | switch (r_type) | |
7420 | { | |
7421 | case R_ARM_ALU_PC_G0_NC: | |
7422 | case R_ARM_ALU_PC_G0: | |
7423 | case R_ARM_ALU_SB_G0_NC: | |
7424 | case R_ARM_ALU_SB_G0: | |
7425 | group = 0; | |
7426 | break; | |
7427 | ||
7428 | case R_ARM_ALU_PC_G1_NC: | |
7429 | case R_ARM_ALU_PC_G1: | |
7430 | case R_ARM_ALU_SB_G1_NC: | |
7431 | case R_ARM_ALU_SB_G1: | |
7432 | group = 1; | |
7433 | break; | |
7434 | ||
7435 | case R_ARM_ALU_PC_G2: | |
7436 | case R_ARM_ALU_SB_G2: | |
7437 | group = 2; | |
7438 | break; | |
7439 | ||
7440 | default: | |
906e58ca | 7441 | abort (); |
4962c51a MS |
7442 | } |
7443 | ||
7444 | /* If REL, extract the addend from the insn. If RELA, it will | |
7445 | have already been fetched for us. */ | |
7446 | if (globals->use_rel) | |
7447 | { | |
7448 | int negative; | |
7449 | bfd_vma constant = insn & 0xff; | |
7450 | bfd_vma rotation = (insn & 0xf00) >> 8; | |
7451 | ||
7452 | if (rotation == 0) | |
7453 | signed_addend = constant; | |
7454 | else | |
7455 | { | |
7456 | /* Compensate for the fact that in the instruction, the | |
7457 | rotation is stored in multiples of 2 bits. */ | |
7458 | rotation *= 2; | |
7459 | ||
7460 | /* Rotate "constant" right by "rotation" bits. */ | |
7461 | signed_addend = (constant >> rotation) | | |
7462 | (constant << (8 * sizeof (bfd_vma) - rotation)); | |
7463 | } | |
7464 | ||
7465 | /* Determine if the instruction is an ADD or a SUB. | |
7466 | (For REL, this determines the sign of the addend.) */ | |
7467 | negative = identify_add_or_sub (insn); | |
7468 | if (negative == 0) | |
7469 | { | |
7470 | (*_bfd_error_handler) | |
7471 | (_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"), | |
7472 | input_bfd, input_section, | |
7473 | (long) rel->r_offset, howto->name); | |
906e58ca | 7474 | return bfd_reloc_overflow; |
4962c51a MS |
7475 | } |
7476 | ||
7477 | signed_addend *= negative; | |
7478 | } | |
7479 | ||
7480 | /* Compute the value (X) to go in the place. */ | |
7481 | if (r_type == R_ARM_ALU_PC_G0_NC | |
7482 | || r_type == R_ARM_ALU_PC_G1_NC | |
7483 | || r_type == R_ARM_ALU_PC_G0 | |
7484 | || r_type == R_ARM_ALU_PC_G1 | |
7485 | || r_type == R_ARM_ALU_PC_G2) | |
7486 | /* PC relative. */ | |
7487 | signed_value = value - pc + signed_addend; | |
7488 | else | |
7489 | /* Section base relative. */ | |
7490 | signed_value = value - sb + signed_addend; | |
7491 | ||
7492 | /* If the target symbol is a Thumb function, then set the | |
7493 | Thumb bit in the address. */ | |
7494 | if (sym_flags == STT_ARM_TFUNC) | |
7495 | signed_value |= 1; | |
7496 | ||
7497 | /* Calculate the value of the relevant G_n, in encoded | |
7498 | constant-with-rotation format. */ | |
7499 | g_n = calculate_group_reloc_mask (abs (signed_value), group, | |
7500 | &residual); | |
7501 | ||
7502 | /* Check for overflow if required. */ | |
7503 | if ((r_type == R_ARM_ALU_PC_G0 | |
7504 | || r_type == R_ARM_ALU_PC_G1 | |
7505 | || r_type == R_ARM_ALU_PC_G2 | |
7506 | || r_type == R_ARM_ALU_SB_G0 | |
7507 | || r_type == R_ARM_ALU_SB_G1 | |
7508 | || r_type == R_ARM_ALU_SB_G2) && residual != 0) | |
7509 | { | |
7510 | (*_bfd_error_handler) | |
7511 | (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"), | |
7512 | input_bfd, input_section, | |
7513 | (long) rel->r_offset, abs (signed_value), howto->name); | |
7514 | return bfd_reloc_overflow; | |
7515 | } | |
7516 | ||
7517 | /* Mask out the value and the ADD/SUB part of the opcode; take care | |
7518 | not to destroy the S bit. */ | |
7519 | insn &= 0xff1ff000; | |
7520 | ||
7521 | /* Set the opcode according to whether the value to go in the | |
7522 | place is negative. */ | |
7523 | if (signed_value < 0) | |
7524 | insn |= 1 << 22; | |
7525 | else | |
7526 | insn |= 1 << 23; | |
7527 | ||
7528 | /* Encode the offset. */ | |
7529 | insn |= g_n; | |
7530 | ||
7531 | bfd_put_32 (input_bfd, insn, hit_data); | |
7532 | } | |
7533 | return bfd_reloc_ok; | |
7534 | ||
7535 | case R_ARM_LDR_PC_G0: | |
7536 | case R_ARM_LDR_PC_G1: | |
7537 | case R_ARM_LDR_PC_G2: | |
7538 | case R_ARM_LDR_SB_G0: | |
7539 | case R_ARM_LDR_SB_G1: | |
7540 | case R_ARM_LDR_SB_G2: | |
7541 | { | |
7542 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
7543 | bfd_vma pc = input_section->output_section->vma | |
7544 | + input_section->output_offset + rel->r_offset; | |
7545 | bfd_vma sb = 0; /* See note above. */ | |
7546 | bfd_vma residual; | |
7547 | bfd_signed_vma signed_value; | |
7548 | int group = 0; | |
7549 | ||
7550 | /* Determine which groups of bits to calculate. */ | |
7551 | switch (r_type) | |
7552 | { | |
7553 | case R_ARM_LDR_PC_G0: | |
7554 | case R_ARM_LDR_SB_G0: | |
7555 | group = 0; | |
7556 | break; | |
7557 | ||
7558 | case R_ARM_LDR_PC_G1: | |
7559 | case R_ARM_LDR_SB_G1: | |
7560 | group = 1; | |
7561 | break; | |
7562 | ||
7563 | case R_ARM_LDR_PC_G2: | |
7564 | case R_ARM_LDR_SB_G2: | |
7565 | group = 2; | |
7566 | break; | |
7567 | ||
7568 | default: | |
906e58ca | 7569 | abort (); |
4962c51a MS |
7570 | } |
7571 | ||
7572 | /* If REL, extract the addend from the insn. If RELA, it will | |
7573 | have already been fetched for us. */ | |
7574 | if (globals->use_rel) | |
7575 | { | |
7576 | int negative = (insn & (1 << 23)) ? 1 : -1; | |
7577 | signed_addend = negative * (insn & 0xfff); | |
7578 | } | |
7579 | ||
7580 | /* Compute the value (X) to go in the place. */ | |
7581 | if (r_type == R_ARM_LDR_PC_G0 | |
7582 | || r_type == R_ARM_LDR_PC_G1 | |
7583 | || r_type == R_ARM_LDR_PC_G2) | |
7584 | /* PC relative. */ | |
7585 | signed_value = value - pc + signed_addend; | |
7586 | else | |
7587 | /* Section base relative. */ | |
7588 | signed_value = value - sb + signed_addend; | |
7589 | ||
7590 | /* Calculate the value of the relevant G_{n-1} to obtain | |
7591 | the residual at that stage. */ | |
7592 | calculate_group_reloc_mask (abs (signed_value), group - 1, &residual); | |
7593 | ||
7594 | /* Check for overflow. */ | |
7595 | if (residual >= 0x1000) | |
7596 | { | |
7597 | (*_bfd_error_handler) | |
7598 | (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"), | |
7599 | input_bfd, input_section, | |
7600 | (long) rel->r_offset, abs (signed_value), howto->name); | |
7601 | return bfd_reloc_overflow; | |
7602 | } | |
7603 | ||
7604 | /* Mask out the value and U bit. */ | |
7605 | insn &= 0xff7ff000; | |
7606 | ||
7607 | /* Set the U bit if the value to go in the place is non-negative. */ | |
7608 | if (signed_value >= 0) | |
7609 | insn |= 1 << 23; | |
7610 | ||
7611 | /* Encode the offset. */ | |
7612 | insn |= residual; | |
7613 | ||
7614 | bfd_put_32 (input_bfd, insn, hit_data); | |
7615 | } | |
7616 | return bfd_reloc_ok; | |
7617 | ||
7618 | case R_ARM_LDRS_PC_G0: | |
7619 | case R_ARM_LDRS_PC_G1: | |
7620 | case R_ARM_LDRS_PC_G2: | |
7621 | case R_ARM_LDRS_SB_G0: | |
7622 | case R_ARM_LDRS_SB_G1: | |
7623 | case R_ARM_LDRS_SB_G2: | |
7624 | { | |
7625 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
7626 | bfd_vma pc = input_section->output_section->vma | |
7627 | + input_section->output_offset + rel->r_offset; | |
7628 | bfd_vma sb = 0; /* See note above. */ | |
7629 | bfd_vma residual; | |
7630 | bfd_signed_vma signed_value; | |
7631 | int group = 0; | |
7632 | ||
7633 | /* Determine which groups of bits to calculate. */ | |
7634 | switch (r_type) | |
7635 | { | |
7636 | case R_ARM_LDRS_PC_G0: | |
7637 | case R_ARM_LDRS_SB_G0: | |
7638 | group = 0; | |
7639 | break; | |
7640 | ||
7641 | case R_ARM_LDRS_PC_G1: | |
7642 | case R_ARM_LDRS_SB_G1: | |
7643 | group = 1; | |
7644 | break; | |
7645 | ||
7646 | case R_ARM_LDRS_PC_G2: | |
7647 | case R_ARM_LDRS_SB_G2: | |
7648 | group = 2; | |
7649 | break; | |
7650 | ||
7651 | default: | |
906e58ca | 7652 | abort (); |
4962c51a MS |
7653 | } |
7654 | ||
7655 | /* If REL, extract the addend from the insn. If RELA, it will | |
7656 | have already been fetched for us. */ | |
7657 | if (globals->use_rel) | |
7658 | { | |
7659 | int negative = (insn & (1 << 23)) ? 1 : -1; | |
7660 | signed_addend = negative * (((insn & 0xf00) >> 4) + (insn & 0xf)); | |
7661 | } | |
7662 | ||
7663 | /* Compute the value (X) to go in the place. */ | |
7664 | if (r_type == R_ARM_LDRS_PC_G0 | |
7665 | || r_type == R_ARM_LDRS_PC_G1 | |
7666 | || r_type == R_ARM_LDRS_PC_G2) | |
7667 | /* PC relative. */ | |
7668 | signed_value = value - pc + signed_addend; | |
7669 | else | |
7670 | /* Section base relative. */ | |
7671 | signed_value = value - sb + signed_addend; | |
7672 | ||
7673 | /* Calculate the value of the relevant G_{n-1} to obtain | |
7674 | the residual at that stage. */ | |
7675 | calculate_group_reloc_mask (abs (signed_value), group - 1, &residual); | |
7676 | ||
7677 | /* Check for overflow. */ | |
7678 | if (residual >= 0x100) | |
7679 | { | |
7680 | (*_bfd_error_handler) | |
7681 | (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"), | |
7682 | input_bfd, input_section, | |
7683 | (long) rel->r_offset, abs (signed_value), howto->name); | |
7684 | return bfd_reloc_overflow; | |
7685 | } | |
7686 | ||
7687 | /* Mask out the value and U bit. */ | |
7688 | insn &= 0xff7ff0f0; | |
7689 | ||
7690 | /* Set the U bit if the value to go in the place is non-negative. */ | |
7691 | if (signed_value >= 0) | |
7692 | insn |= 1 << 23; | |
7693 | ||
7694 | /* Encode the offset. */ | |
7695 | insn |= ((residual & 0xf0) << 4) | (residual & 0xf); | |
7696 | ||
7697 | bfd_put_32 (input_bfd, insn, hit_data); | |
7698 | } | |
7699 | return bfd_reloc_ok; | |
7700 | ||
7701 | case R_ARM_LDC_PC_G0: | |
7702 | case R_ARM_LDC_PC_G1: | |
7703 | case R_ARM_LDC_PC_G2: | |
7704 | case R_ARM_LDC_SB_G0: | |
7705 | case R_ARM_LDC_SB_G1: | |
7706 | case R_ARM_LDC_SB_G2: | |
7707 | { | |
7708 | bfd_vma insn = bfd_get_32 (input_bfd, hit_data); | |
7709 | bfd_vma pc = input_section->output_section->vma | |
7710 | + input_section->output_offset + rel->r_offset; | |
7711 | bfd_vma sb = 0; /* See note above. */ | |
7712 | bfd_vma residual; | |
7713 | bfd_signed_vma signed_value; | |
7714 | int group = 0; | |
7715 | ||
7716 | /* Determine which groups of bits to calculate. */ | |
7717 | switch (r_type) | |
7718 | { | |
7719 | case R_ARM_LDC_PC_G0: | |
7720 | case R_ARM_LDC_SB_G0: | |
7721 | group = 0; | |
7722 | break; | |
7723 | ||
7724 | case R_ARM_LDC_PC_G1: | |
7725 | case R_ARM_LDC_SB_G1: | |
7726 | group = 1; | |
7727 | break; | |
7728 | ||
7729 | case R_ARM_LDC_PC_G2: | |
7730 | case R_ARM_LDC_SB_G2: | |
7731 | group = 2; | |
7732 | break; | |
7733 | ||
7734 | default: | |
906e58ca | 7735 | abort (); |
4962c51a MS |
7736 | } |
7737 | ||
7738 | /* If REL, extract the addend from the insn. If RELA, it will | |
7739 | have already been fetched for us. */ | |
7740 | if (globals->use_rel) | |
7741 | { | |
7742 | int negative = (insn & (1 << 23)) ? 1 : -1; | |
7743 | signed_addend = negative * ((insn & 0xff) << 2); | |
7744 | } | |
7745 | ||
7746 | /* Compute the value (X) to go in the place. */ | |
7747 | if (r_type == R_ARM_LDC_PC_G0 | |
7748 | || r_type == R_ARM_LDC_PC_G1 | |
7749 | || r_type == R_ARM_LDC_PC_G2) | |
7750 | /* PC relative. */ | |
7751 | signed_value = value - pc + signed_addend; | |
7752 | else | |
7753 | /* Section base relative. */ | |
7754 | signed_value = value - sb + signed_addend; | |
7755 | ||
7756 | /* Calculate the value of the relevant G_{n-1} to obtain | |
7757 | the residual at that stage. */ | |
7758 | calculate_group_reloc_mask (abs (signed_value), group - 1, &residual); | |
7759 | ||
7760 | /* Check for overflow. (The absolute value to go in the place must be | |
7761 | divisible by four and, after having been divided by four, must | |
7762 | fit in eight bits.) */ | |
7763 | if ((residual & 0x3) != 0 || residual >= 0x400) | |
7764 | { | |
7765 | (*_bfd_error_handler) | |
7766 | (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"), | |
7767 | input_bfd, input_section, | |
7768 | (long) rel->r_offset, abs (signed_value), howto->name); | |
7769 | return bfd_reloc_overflow; | |
7770 | } | |
7771 | ||
7772 | /* Mask out the value and U bit. */ | |
7773 | insn &= 0xff7fff00; | |
7774 | ||
7775 | /* Set the U bit if the value to go in the place is non-negative. */ | |
7776 | if (signed_value >= 0) | |
7777 | insn |= 1 << 23; | |
7778 | ||
7779 | /* Encode the offset. */ | |
7780 | insn |= residual >> 2; | |
7781 | ||
7782 | bfd_put_32 (input_bfd, insn, hit_data); | |
7783 | } | |
7784 | return bfd_reloc_ok; | |
7785 | ||
252b5132 RH |
7786 | default: |
7787 | return bfd_reloc_notsupported; | |
7788 | } | |
7789 | } | |
7790 | ||
98c1d4aa NC |
7791 | /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */ |
7792 | static void | |
57e8b36a NC |
7793 | arm_add_to_rel (bfd * abfd, |
7794 | bfd_byte * address, | |
7795 | reloc_howto_type * howto, | |
7796 | bfd_signed_vma increment) | |
98c1d4aa | 7797 | { |
98c1d4aa NC |
7798 | bfd_signed_vma addend; |
7799 | ||
bd97cb95 DJ |
7800 | if (howto->type == R_ARM_THM_CALL |
7801 | || howto->type == R_ARM_THM_JUMP24) | |
98c1d4aa | 7802 | { |
9a5aca8c AM |
7803 | int upper_insn, lower_insn; |
7804 | int upper, lower; | |
98c1d4aa | 7805 | |
9a5aca8c AM |
7806 | upper_insn = bfd_get_16 (abfd, address); |
7807 | lower_insn = bfd_get_16 (abfd, address + 2); | |
7808 | upper = upper_insn & 0x7ff; | |
7809 | lower = lower_insn & 0x7ff; | |
7810 | ||
7811 | addend = (upper << 12) | (lower << 1); | |
ddda4409 | 7812 | addend += increment; |
9a5aca8c | 7813 | addend >>= 1; |
98c1d4aa | 7814 | |
9a5aca8c AM |
7815 | upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff); |
7816 | lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff); | |
7817 | ||
dc810e39 AM |
7818 | bfd_put_16 (abfd, (bfd_vma) upper_insn, address); |
7819 | bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2); | |
9a5aca8c AM |
7820 | } |
7821 | else | |
7822 | { | |
7823 | bfd_vma contents; | |
7824 | ||
7825 | contents = bfd_get_32 (abfd, address); | |
7826 | ||
7827 | /* Get the (signed) value from the instruction. */ | |
7828 | addend = contents & howto->src_mask; | |
7829 | if (addend & ((howto->src_mask + 1) >> 1)) | |
7830 | { | |
7831 | bfd_signed_vma mask; | |
7832 | ||
7833 | mask = -1; | |
7834 | mask &= ~ howto->src_mask; | |
7835 | addend |= mask; | |
7836 | } | |
7837 | ||
7838 | /* Add in the increment, (which is a byte value). */ | |
7839 | switch (howto->type) | |
7840 | { | |
7841 | default: | |
7842 | addend += increment; | |
7843 | break; | |
7844 | ||
7845 | case R_ARM_PC24: | |
c6596c5e | 7846 | case R_ARM_PLT32: |
5b5bb741 PB |
7847 | case R_ARM_CALL: |
7848 | case R_ARM_JUMP24: | |
9a5aca8c | 7849 | addend <<= howto->size; |
dc810e39 | 7850 | addend += increment; |
9a5aca8c AM |
7851 | |
7852 | /* Should we check for overflow here ? */ | |
7853 | ||
7854 | /* Drop any undesired bits. */ | |
7855 | addend >>= howto->rightshift; | |
7856 | break; | |
7857 | } | |
7858 | ||
7859 | contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask); | |
7860 | ||
7861 | bfd_put_32 (abfd, contents, address); | |
ddda4409 | 7862 | } |
98c1d4aa | 7863 | } |
252b5132 | 7864 | |
ba93b8ac DJ |
7865 | #define IS_ARM_TLS_RELOC(R_TYPE) \ |
7866 | ((R_TYPE) == R_ARM_TLS_GD32 \ | |
7867 | || (R_TYPE) == R_ARM_TLS_LDO32 \ | |
7868 | || (R_TYPE) == R_ARM_TLS_LDM32 \ | |
7869 | || (R_TYPE) == R_ARM_TLS_DTPOFF32 \ | |
7870 | || (R_TYPE) == R_ARM_TLS_DTPMOD32 \ | |
7871 | || (R_TYPE) == R_ARM_TLS_TPOFF32 \ | |
7872 | || (R_TYPE) == R_ARM_TLS_LE32 \ | |
7873 | || (R_TYPE) == R_ARM_TLS_IE32) | |
7874 | ||
252b5132 | 7875 | /* Relocate an ARM ELF section. */ |
906e58ca | 7876 | |
b34976b6 | 7877 | static bfd_boolean |
57e8b36a NC |
7878 | elf32_arm_relocate_section (bfd * output_bfd, |
7879 | struct bfd_link_info * info, | |
7880 | bfd * input_bfd, | |
7881 | asection * input_section, | |
7882 | bfd_byte * contents, | |
7883 | Elf_Internal_Rela * relocs, | |
7884 | Elf_Internal_Sym * local_syms, | |
7885 | asection ** local_sections) | |
252b5132 | 7886 | { |
b34976b6 AM |
7887 | Elf_Internal_Shdr *symtab_hdr; |
7888 | struct elf_link_hash_entry **sym_hashes; | |
7889 | Elf_Internal_Rela *rel; | |
7890 | Elf_Internal_Rela *relend; | |
7891 | const char *name; | |
b32d3aa2 | 7892 | struct elf32_arm_link_hash_table * globals; |
252b5132 | 7893 | |
4e7fd91e | 7894 | globals = elf32_arm_hash_table (info); |
b491616a | 7895 | |
0ffa91dd | 7896 | symtab_hdr = & elf_symtab_hdr (input_bfd); |
252b5132 RH |
7897 | sym_hashes = elf_sym_hashes (input_bfd); |
7898 | ||
7899 | rel = relocs; | |
7900 | relend = relocs + input_section->reloc_count; | |
7901 | for (; rel < relend; rel++) | |
7902 | { | |
ba96a88f NC |
7903 | int r_type; |
7904 | reloc_howto_type * howto; | |
7905 | unsigned long r_symndx; | |
7906 | Elf_Internal_Sym * sym; | |
7907 | asection * sec; | |
252b5132 | 7908 | struct elf_link_hash_entry * h; |
ba96a88f NC |
7909 | bfd_vma relocation; |
7910 | bfd_reloc_status_type r; | |
7911 | arelent bfd_reloc; | |
ba93b8ac | 7912 | char sym_type; |
0945cdfd | 7913 | bfd_boolean unresolved_reloc = FALSE; |
f2a9dd69 | 7914 | char *error_message = NULL; |
f21f3fe0 | 7915 | |
252b5132 | 7916 | r_symndx = ELF32_R_SYM (rel->r_info); |
ba96a88f | 7917 | r_type = ELF32_R_TYPE (rel->r_info); |
b32d3aa2 | 7918 | r_type = arm_real_reloc_type (globals, r_type); |
252b5132 | 7919 | |
ba96a88f NC |
7920 | if ( r_type == R_ARM_GNU_VTENTRY |
7921 | || r_type == R_ARM_GNU_VTINHERIT) | |
252b5132 RH |
7922 | continue; |
7923 | ||
b32d3aa2 | 7924 | bfd_reloc.howto = elf32_arm_howto_from_type (r_type); |
ba96a88f | 7925 | howto = bfd_reloc.howto; |
252b5132 | 7926 | |
252b5132 RH |
7927 | h = NULL; |
7928 | sym = NULL; | |
7929 | sec = NULL; | |
9b485d32 | 7930 | |
252b5132 RH |
7931 | if (r_symndx < symtab_hdr->sh_info) |
7932 | { | |
7933 | sym = local_syms + r_symndx; | |
ba93b8ac | 7934 | sym_type = ELF32_ST_TYPE (sym->st_info); |
252b5132 | 7935 | sec = local_sections[r_symndx]; |
4e7fd91e | 7936 | if (globals->use_rel) |
f8df10f4 | 7937 | { |
4e7fd91e PB |
7938 | relocation = (sec->output_section->vma |
7939 | + sec->output_offset | |
7940 | + sym->st_value); | |
ab96bf03 AM |
7941 | if (!info->relocatable |
7942 | && (sec->flags & SEC_MERGE) | |
7943 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
f8df10f4 | 7944 | { |
4e7fd91e PB |
7945 | asection *msec; |
7946 | bfd_vma addend, value; | |
7947 | ||
39623e12 | 7948 | switch (r_type) |
4e7fd91e | 7949 | { |
39623e12 PB |
7950 | case R_ARM_MOVW_ABS_NC: |
7951 | case R_ARM_MOVT_ABS: | |
7952 | value = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
7953 | addend = ((value & 0xf0000) >> 4) | (value & 0xfff); | |
7954 | addend = (addend ^ 0x8000) - 0x8000; | |
7955 | break; | |
f8df10f4 | 7956 | |
39623e12 PB |
7957 | case R_ARM_THM_MOVW_ABS_NC: |
7958 | case R_ARM_THM_MOVT_ABS: | |
7959 | value = bfd_get_16 (input_bfd, contents + rel->r_offset) | |
7960 | << 16; | |
7961 | value |= bfd_get_16 (input_bfd, | |
7962 | contents + rel->r_offset + 2); | |
7963 | addend = ((value & 0xf7000) >> 4) | (value & 0xff) | |
7964 | | ((value & 0x04000000) >> 15); | |
7965 | addend = (addend ^ 0x8000) - 0x8000; | |
7966 | break; | |
f8df10f4 | 7967 | |
39623e12 PB |
7968 | default: |
7969 | if (howto->rightshift | |
7970 | || (howto->src_mask & (howto->src_mask + 1))) | |
7971 | { | |
7972 | (*_bfd_error_handler) | |
7973 | (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"), | |
7974 | input_bfd, input_section, | |
7975 | (long) rel->r_offset, howto->name); | |
7976 | return FALSE; | |
7977 | } | |
7978 | ||
7979 | value = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
7980 | ||
7981 | /* Get the (signed) value from the instruction. */ | |
7982 | addend = value & howto->src_mask; | |
7983 | if (addend & ((howto->src_mask + 1) >> 1)) | |
7984 | { | |
7985 | bfd_signed_vma mask; | |
7986 | ||
7987 | mask = -1; | |
7988 | mask &= ~ howto->src_mask; | |
7989 | addend |= mask; | |
7990 | } | |
7991 | break; | |
4e7fd91e | 7992 | } |
39623e12 | 7993 | |
4e7fd91e PB |
7994 | msec = sec; |
7995 | addend = | |
7996 | _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend) | |
7997 | - relocation; | |
7998 | addend += msec->output_section->vma + msec->output_offset; | |
39623e12 PB |
7999 | |
8000 | /* Cases here must match those in the preceeding | |
8001 | switch statement. */ | |
8002 | switch (r_type) | |
8003 | { | |
8004 | case R_ARM_MOVW_ABS_NC: | |
8005 | case R_ARM_MOVT_ABS: | |
8006 | value = (value & 0xfff0f000) | ((addend & 0xf000) << 4) | |
8007 | | (addend & 0xfff); | |
8008 | bfd_put_32 (input_bfd, value, contents + rel->r_offset); | |
8009 | break; | |
8010 | ||
8011 | case R_ARM_THM_MOVW_ABS_NC: | |
8012 | case R_ARM_THM_MOVT_ABS: | |
8013 | value = (value & 0xfbf08f00) | ((addend & 0xf700) << 4) | |
8014 | | (addend & 0xff) | ((addend & 0x0800) << 15); | |
8015 | bfd_put_16 (input_bfd, value >> 16, | |
8016 | contents + rel->r_offset); | |
8017 | bfd_put_16 (input_bfd, value, | |
8018 | contents + rel->r_offset + 2); | |
8019 | break; | |
8020 | ||
8021 | default: | |
8022 | value = (value & ~ howto->dst_mask) | |
8023 | | (addend & howto->dst_mask); | |
8024 | bfd_put_32 (input_bfd, value, contents + rel->r_offset); | |
8025 | break; | |
8026 | } | |
f8df10f4 | 8027 | } |
f8df10f4 | 8028 | } |
4e7fd91e PB |
8029 | else |
8030 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
252b5132 RH |
8031 | } |
8032 | else | |
8033 | { | |
560e09e9 | 8034 | bfd_boolean warned; |
560e09e9 | 8035 | |
b2a8e766 AM |
8036 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
8037 | r_symndx, symtab_hdr, sym_hashes, | |
8038 | h, sec, relocation, | |
8039 | unresolved_reloc, warned); | |
ba93b8ac DJ |
8040 | |
8041 | sym_type = h->type; | |
252b5132 RH |
8042 | } |
8043 | ||
ab96bf03 AM |
8044 | if (sec != NULL && elf_discarded_section (sec)) |
8045 | { | |
8046 | /* For relocs against symbols from removed linkonce sections, | |
8047 | or sections discarded by a linker script, we just want the | |
8048 | section contents zeroed. Avoid any special processing. */ | |
8049 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); | |
8050 | rel->r_info = 0; | |
8051 | rel->r_addend = 0; | |
8052 | continue; | |
8053 | } | |
8054 | ||
8055 | if (info->relocatable) | |
8056 | { | |
8057 | /* This is a relocatable link. We don't have to change | |
8058 | anything, unless the reloc is against a section symbol, | |
8059 | in which case we have to adjust according to where the | |
8060 | section symbol winds up in the output section. */ | |
8061 | if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
8062 | { | |
8063 | if (globals->use_rel) | |
8064 | arm_add_to_rel (input_bfd, contents + rel->r_offset, | |
8065 | howto, (bfd_signed_vma) sec->output_offset); | |
8066 | else | |
8067 | rel->r_addend += sec->output_offset; | |
8068 | } | |
8069 | continue; | |
8070 | } | |
8071 | ||
252b5132 RH |
8072 | if (h != NULL) |
8073 | name = h->root.root.string; | |
8074 | else | |
8075 | { | |
8076 | name = (bfd_elf_string_from_elf_section | |
8077 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
8078 | if (name == NULL || *name == '\0') | |
8079 | name = bfd_section_name (input_bfd, sec); | |
8080 | } | |
f21f3fe0 | 8081 | |
ba93b8ac DJ |
8082 | if (r_symndx != 0 |
8083 | && r_type != R_ARM_NONE | |
8084 | && (h == NULL | |
8085 | || h->root.type == bfd_link_hash_defined | |
8086 | || h->root.type == bfd_link_hash_defweak) | |
8087 | && IS_ARM_TLS_RELOC (r_type) != (sym_type == STT_TLS)) | |
8088 | { | |
8089 | (*_bfd_error_handler) | |
8090 | ((sym_type == STT_TLS | |
8091 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") | |
8092 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")), | |
8093 | input_bfd, | |
8094 | input_section, | |
8095 | (long) rel->r_offset, | |
8096 | howto->name, | |
8097 | name); | |
8098 | } | |
8099 | ||
252b5132 RH |
8100 | r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd, |
8101 | input_section, contents, rel, | |
8102 | relocation, info, sec, name, | |
8103 | (h ? ELF_ST_TYPE (h->type) : | |
0945cdfd | 8104 | ELF_ST_TYPE (sym->st_info)), h, |
f2a9dd69 | 8105 | &unresolved_reloc, &error_message); |
0945cdfd DJ |
8106 | |
8107 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections | |
8108 | because such sections are not SEC_ALLOC and thus ld.so will | |
8109 | not process them. */ | |
8110 | if (unresolved_reloc | |
8111 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
8112 | && h->def_dynamic)) | |
8113 | { | |
8114 | (*_bfd_error_handler) | |
843fe662 L |
8115 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
8116 | input_bfd, | |
8117 | input_section, | |
8118 | (long) rel->r_offset, | |
8119 | howto->name, | |
8120 | h->root.root.string); | |
0945cdfd DJ |
8121 | return FALSE; |
8122 | } | |
252b5132 RH |
8123 | |
8124 | if (r != bfd_reloc_ok) | |
8125 | { | |
252b5132 RH |
8126 | switch (r) |
8127 | { | |
8128 | case bfd_reloc_overflow: | |
cf919dfd PB |
8129 | /* If the overflowing reloc was to an undefined symbol, |
8130 | we have already printed one error message and there | |
8131 | is no point complaining again. */ | |
8132 | if ((! h || | |
8133 | h->root.type != bfd_link_hash_undefined) | |
8134 | && (!((*info->callbacks->reloc_overflow) | |
dfeffb9f L |
8135 | (info, (h ? &h->root : NULL), name, howto->name, |
8136 | (bfd_vma) 0, input_bfd, input_section, | |
8137 | rel->r_offset)))) | |
b34976b6 | 8138 | return FALSE; |
252b5132 RH |
8139 | break; |
8140 | ||
8141 | case bfd_reloc_undefined: | |
8142 | if (!((*info->callbacks->undefined_symbol) | |
8143 | (info, name, input_bfd, input_section, | |
b34976b6 AM |
8144 | rel->r_offset, TRUE))) |
8145 | return FALSE; | |
252b5132 RH |
8146 | break; |
8147 | ||
8148 | case bfd_reloc_outofrange: | |
f2a9dd69 | 8149 | error_message = _("out of range"); |
252b5132 RH |
8150 | goto common_error; |
8151 | ||
8152 | case bfd_reloc_notsupported: | |
f2a9dd69 | 8153 | error_message = _("unsupported relocation"); |
252b5132 RH |
8154 | goto common_error; |
8155 | ||
8156 | case bfd_reloc_dangerous: | |
f2a9dd69 | 8157 | /* error_message should already be set. */ |
252b5132 RH |
8158 | goto common_error; |
8159 | ||
8160 | default: | |
f2a9dd69 | 8161 | error_message = _("unknown error"); |
8029a119 | 8162 | /* Fall through. */ |
252b5132 RH |
8163 | |
8164 | common_error: | |
f2a9dd69 DJ |
8165 | BFD_ASSERT (error_message != NULL); |
8166 | if (!((*info->callbacks->reloc_dangerous) | |
8167 | (info, error_message, input_bfd, input_section, | |
252b5132 | 8168 | rel->r_offset))) |
b34976b6 | 8169 | return FALSE; |
252b5132 RH |
8170 | break; |
8171 | } | |
8172 | } | |
8173 | } | |
8174 | ||
b34976b6 | 8175 | return TRUE; |
252b5132 RH |
8176 | } |
8177 | ||
c178919b NC |
8178 | /* Set the right machine number. */ |
8179 | ||
8180 | static bfd_boolean | |
57e8b36a | 8181 | elf32_arm_object_p (bfd *abfd) |
c178919b | 8182 | { |
5a6c6817 | 8183 | unsigned int mach; |
57e8b36a | 8184 | |
5a6c6817 | 8185 | mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION); |
c178919b | 8186 | |
5a6c6817 NC |
8187 | if (mach != bfd_mach_arm_unknown) |
8188 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach); | |
8189 | ||
8190 | else if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT) | |
8191 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_ep9312); | |
e16bb312 | 8192 | |
e16bb312 | 8193 | else |
5a6c6817 | 8194 | bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach); |
c178919b NC |
8195 | |
8196 | return TRUE; | |
8197 | } | |
8198 | ||
fc830a83 | 8199 | /* Function to keep ARM specific flags in the ELF header. */ |
3c9458e9 | 8200 | |
b34976b6 | 8201 | static bfd_boolean |
57e8b36a | 8202 | elf32_arm_set_private_flags (bfd *abfd, flagword flags) |
252b5132 RH |
8203 | { |
8204 | if (elf_flags_init (abfd) | |
8205 | && elf_elfheader (abfd)->e_flags != flags) | |
8206 | { | |
fc830a83 NC |
8207 | if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN) |
8208 | { | |
fd2ec330 | 8209 | if (flags & EF_ARM_INTERWORK) |
d003868e AM |
8210 | (*_bfd_error_handler) |
8211 | (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"), | |
8212 | abfd); | |
fc830a83 | 8213 | else |
d003868e AM |
8214 | _bfd_error_handler |
8215 | (_("Warning: Clearing the interworking flag of %B due to outside request"), | |
8216 | abfd); | |
fc830a83 | 8217 | } |
252b5132 RH |
8218 | } |
8219 | else | |
8220 | { | |
8221 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 | 8222 | elf_flags_init (abfd) = TRUE; |
252b5132 RH |
8223 | } |
8224 | ||
b34976b6 | 8225 | return TRUE; |
252b5132 RH |
8226 | } |
8227 | ||
fc830a83 | 8228 | /* Copy backend specific data from one object module to another. */ |
9b485d32 | 8229 | |
b34976b6 | 8230 | static bfd_boolean |
57e8b36a | 8231 | elf32_arm_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
252b5132 RH |
8232 | { |
8233 | flagword in_flags; | |
8234 | flagword out_flags; | |
8235 | ||
0ffa91dd | 8236 | if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd)) |
b34976b6 | 8237 | return TRUE; |
252b5132 | 8238 | |
fc830a83 | 8239 | in_flags = elf_elfheader (ibfd)->e_flags; |
252b5132 RH |
8240 | out_flags = elf_elfheader (obfd)->e_flags; |
8241 | ||
fc830a83 NC |
8242 | if (elf_flags_init (obfd) |
8243 | && EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN | |
8244 | && in_flags != out_flags) | |
252b5132 | 8245 | { |
252b5132 | 8246 | /* Cannot mix APCS26 and APCS32 code. */ |
fd2ec330 | 8247 | if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26)) |
b34976b6 | 8248 | return FALSE; |
252b5132 RH |
8249 | |
8250 | /* Cannot mix float APCS and non-float APCS code. */ | |
fd2ec330 | 8251 | if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT)) |
b34976b6 | 8252 | return FALSE; |
252b5132 RH |
8253 | |
8254 | /* If the src and dest have different interworking flags | |
8255 | then turn off the interworking bit. */ | |
fd2ec330 | 8256 | if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK)) |
252b5132 | 8257 | { |
fd2ec330 | 8258 | if (out_flags & EF_ARM_INTERWORK) |
d003868e AM |
8259 | _bfd_error_handler |
8260 | (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"), | |
8261 | obfd, ibfd); | |
252b5132 | 8262 | |
fd2ec330 | 8263 | in_flags &= ~EF_ARM_INTERWORK; |
252b5132 | 8264 | } |
1006ba19 PB |
8265 | |
8266 | /* Likewise for PIC, though don't warn for this case. */ | |
fd2ec330 PB |
8267 | if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC)) |
8268 | in_flags &= ~EF_ARM_PIC; | |
252b5132 RH |
8269 | } |
8270 | ||
8271 | elf_elfheader (obfd)->e_flags = in_flags; | |
b34976b6 | 8272 | elf_flags_init (obfd) = TRUE; |
252b5132 | 8273 | |
94a3258f PB |
8274 | /* Also copy the EI_OSABI field. */ |
8275 | elf_elfheader (obfd)->e_ident[EI_OSABI] = | |
8276 | elf_elfheader (ibfd)->e_ident[EI_OSABI]; | |
8277 | ||
104d59d1 JM |
8278 | /* Copy object attributes. */ |
8279 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
ee065d83 PB |
8280 | |
8281 | return TRUE; | |
8282 | } | |
8283 | ||
8284 | /* Values for Tag_ABI_PCS_R9_use. */ | |
8285 | enum | |
8286 | { | |
8287 | AEABI_R9_V6, | |
8288 | AEABI_R9_SB, | |
8289 | AEABI_R9_TLS, | |
8290 | AEABI_R9_unused | |
8291 | }; | |
8292 | ||
8293 | /* Values for Tag_ABI_PCS_RW_data. */ | |
8294 | enum | |
8295 | { | |
8296 | AEABI_PCS_RW_data_absolute, | |
8297 | AEABI_PCS_RW_data_PCrel, | |
8298 | AEABI_PCS_RW_data_SBrel, | |
8299 | AEABI_PCS_RW_data_unused | |
8300 | }; | |
8301 | ||
8302 | /* Values for Tag_ABI_enum_size. */ | |
8303 | enum | |
8304 | { | |
8305 | AEABI_enum_unused, | |
8306 | AEABI_enum_short, | |
8307 | AEABI_enum_wide, | |
8308 | AEABI_enum_forced_wide | |
8309 | }; | |
8310 | ||
104d59d1 JM |
8311 | /* Determine whether an object attribute tag takes an integer, a |
8312 | string or both. */ | |
906e58ca | 8313 | |
104d59d1 JM |
8314 | static int |
8315 | elf32_arm_obj_attrs_arg_type (int tag) | |
8316 | { | |
8317 | if (tag == Tag_compatibility) | |
3483fe2e | 8318 | return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_STR_VAL; |
2d0bb761 | 8319 | else if (tag == Tag_nodefaults) |
3483fe2e AS |
8320 | return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_NO_DEFAULT; |
8321 | else if (tag == Tag_CPU_raw_name || tag == Tag_CPU_name) | |
8322 | return ATTR_TYPE_FLAG_STR_VAL; | |
104d59d1 | 8323 | else if (tag < 32) |
3483fe2e | 8324 | return ATTR_TYPE_FLAG_INT_VAL; |
104d59d1 | 8325 | else |
3483fe2e | 8326 | return (tag & 1) != 0 ? ATTR_TYPE_FLAG_STR_VAL : ATTR_TYPE_FLAG_INT_VAL; |
104d59d1 JM |
8327 | } |
8328 | ||
5aa6ff7c AS |
8329 | /* The ABI defines that Tag_conformance should be emitted first, and that |
8330 | Tag_nodefaults should be second (if either is defined). This sets those | |
8331 | two positions, and bumps up the position of all the remaining tags to | |
8332 | compensate. */ | |
8333 | static int | |
8334 | elf32_arm_obj_attrs_order (int num) | |
8335 | { | |
8336 | if (num == 4) | |
8337 | return Tag_conformance; | |
8338 | if (num == 5) | |
8339 | return Tag_nodefaults; | |
8340 | if ((num - 2) < Tag_nodefaults) | |
8341 | return num - 2; | |
8342 | if ((num - 1) < Tag_conformance) | |
8343 | return num - 1; | |
8344 | return num; | |
8345 | } | |
8346 | ||
91e22acd AS |
8347 | /* Read the architecture from the Tag_also_compatible_with attribute, if any. |
8348 | Returns -1 if no architecture could be read. */ | |
8349 | ||
8350 | static int | |
8351 | get_secondary_compatible_arch (bfd *abfd) | |
8352 | { | |
8353 | obj_attribute *attr = | |
8354 | &elf_known_obj_attributes_proc (abfd)[Tag_also_compatible_with]; | |
8355 | ||
8356 | /* Note: the tag and its argument below are uleb128 values, though | |
8357 | currently-defined values fit in one byte for each. */ | |
8358 | if (attr->s | |
8359 | && attr->s[0] == Tag_CPU_arch | |
8360 | && (attr->s[1] & 128) != 128 | |
8361 | && attr->s[2] == 0) | |
8362 | return attr->s[1]; | |
8363 | ||
8364 | /* This tag is "safely ignorable", so don't complain if it looks funny. */ | |
8365 | return -1; | |
8366 | } | |
8367 | ||
8368 | /* Set, or unset, the architecture of the Tag_also_compatible_with attribute. | |
8369 | The tag is removed if ARCH is -1. */ | |
8370 | ||
8e79c3df | 8371 | static void |
91e22acd | 8372 | set_secondary_compatible_arch (bfd *abfd, int arch) |
8e79c3df | 8373 | { |
91e22acd AS |
8374 | obj_attribute *attr = |
8375 | &elf_known_obj_attributes_proc (abfd)[Tag_also_compatible_with]; | |
8e79c3df | 8376 | |
91e22acd AS |
8377 | if (arch == -1) |
8378 | { | |
8379 | attr->s = NULL; | |
8380 | return; | |
8e79c3df | 8381 | } |
91e22acd AS |
8382 | |
8383 | /* Note: the tag and its argument below are uleb128 values, though | |
8384 | currently-defined values fit in one byte for each. */ | |
8385 | if (!attr->s) | |
8386 | attr->s = bfd_alloc (abfd, 3); | |
8387 | attr->s[0] = Tag_CPU_arch; | |
8388 | attr->s[1] = arch; | |
8389 | attr->s[2] = '\0'; | |
8e79c3df CM |
8390 | } |
8391 | ||
91e22acd AS |
8392 | /* Combine two values for Tag_CPU_arch, taking secondary compatibility tags |
8393 | into account. */ | |
8394 | ||
8395 | static int | |
8396 | tag_cpu_arch_combine (bfd *ibfd, int oldtag, int *secondary_compat_out, | |
8397 | int newtag, int secondary_compat) | |
8e79c3df | 8398 | { |
91e22acd AS |
8399 | #define T(X) TAG_CPU_ARCH_##X |
8400 | int tagl, tagh, result; | |
8401 | const int v6t2[] = | |
8402 | { | |
8403 | T(V6T2), /* PRE_V4. */ | |
8404 | T(V6T2), /* V4. */ | |
8405 | T(V6T2), /* V4T. */ | |
8406 | T(V6T2), /* V5T. */ | |
8407 | T(V6T2), /* V5TE. */ | |
8408 | T(V6T2), /* V5TEJ. */ | |
8409 | T(V6T2), /* V6. */ | |
8410 | T(V7), /* V6KZ. */ | |
8411 | T(V6T2) /* V6T2. */ | |
8412 | }; | |
8413 | const int v6k[] = | |
8414 | { | |
8415 | T(V6K), /* PRE_V4. */ | |
8416 | T(V6K), /* V4. */ | |
8417 | T(V6K), /* V4T. */ | |
8418 | T(V6K), /* V5T. */ | |
8419 | T(V6K), /* V5TE. */ | |
8420 | T(V6K), /* V5TEJ. */ | |
8421 | T(V6K), /* V6. */ | |
8422 | T(V6KZ), /* V6KZ. */ | |
8423 | T(V7), /* V6T2. */ | |
8424 | T(V6K) /* V6K. */ | |
8425 | }; | |
8426 | const int v7[] = | |
8427 | { | |
8428 | T(V7), /* PRE_V4. */ | |
8429 | T(V7), /* V4. */ | |
8430 | T(V7), /* V4T. */ | |
8431 | T(V7), /* V5T. */ | |
8432 | T(V7), /* V5TE. */ | |
8433 | T(V7), /* V5TEJ. */ | |
8434 | T(V7), /* V6. */ | |
8435 | T(V7), /* V6KZ. */ | |
8436 | T(V7), /* V6T2. */ | |
8437 | T(V7), /* V6K. */ | |
8438 | T(V7) /* V7. */ | |
8439 | }; | |
8440 | const int v6_m[] = | |
8441 | { | |
8442 | -1, /* PRE_V4. */ | |
8443 | -1, /* V4. */ | |
8444 | T(V6K), /* V4T. */ | |
8445 | T(V6K), /* V5T. */ | |
8446 | T(V6K), /* V5TE. */ | |
8447 | T(V6K), /* V5TEJ. */ | |
8448 | T(V6K), /* V6. */ | |
8449 | T(V6KZ), /* V6KZ. */ | |
8450 | T(V7), /* V6T2. */ | |
8451 | T(V6K), /* V6K. */ | |
8452 | T(V7), /* V7. */ | |
8453 | T(V6_M) /* V6_M. */ | |
8454 | }; | |
8455 | const int v6s_m[] = | |
8456 | { | |
8457 | -1, /* PRE_V4. */ | |
8458 | -1, /* V4. */ | |
8459 | T(V6K), /* V4T. */ | |
8460 | T(V6K), /* V5T. */ | |
8461 | T(V6K), /* V5TE. */ | |
8462 | T(V6K), /* V5TEJ. */ | |
8463 | T(V6K), /* V6. */ | |
8464 | T(V6KZ), /* V6KZ. */ | |
8465 | T(V7), /* V6T2. */ | |
8466 | T(V6K), /* V6K. */ | |
8467 | T(V7), /* V7. */ | |
8468 | T(V6S_M), /* V6_M. */ | |
8469 | T(V6S_M) /* V6S_M. */ | |
8470 | }; | |
8471 | const int v4t_plus_v6_m[] = | |
8472 | { | |
8473 | -1, /* PRE_V4. */ | |
8474 | -1, /* V4. */ | |
8475 | T(V4T), /* V4T. */ | |
8476 | T(V5T), /* V5T. */ | |
8477 | T(V5TE), /* V5TE. */ | |
8478 | T(V5TEJ), /* V5TEJ. */ | |
8479 | T(V6), /* V6. */ | |
8480 | T(V6KZ), /* V6KZ. */ | |
8481 | T(V6T2), /* V6T2. */ | |
8482 | T(V6K), /* V6K. */ | |
8483 | T(V7), /* V7. */ | |
8484 | T(V6_M), /* V6_M. */ | |
8485 | T(V6S_M), /* V6S_M. */ | |
8486 | T(V4T_PLUS_V6_M) /* V4T plus V6_M. */ | |
8487 | }; | |
8488 | const int *comb[] = | |
8489 | { | |
8490 | v6t2, | |
8491 | v6k, | |
8492 | v7, | |
8493 | v6_m, | |
8494 | v6s_m, | |
8495 | /* Pseudo-architecture. */ | |
8496 | v4t_plus_v6_m | |
8497 | }; | |
8498 | ||
8499 | /* Check we've not got a higher architecture than we know about. */ | |
8500 | ||
8501 | if (oldtag >= MAX_TAG_CPU_ARCH || newtag >= MAX_TAG_CPU_ARCH) | |
8502 | { | |
8503 | _bfd_error_handler (_("ERROR: %B: Unknown CPU architecture"), ibfd); | |
8504 | return -1; | |
8505 | } | |
8506 | ||
8507 | /* Override old tag if we have a Tag_also_compatible_with on the output. */ | |
8508 | ||
8509 | if ((oldtag == T(V6_M) && *secondary_compat_out == T(V4T)) | |
8510 | || (oldtag == T(V4T) && *secondary_compat_out == T(V6_M))) | |
8511 | oldtag = T(V4T_PLUS_V6_M); | |
8512 | ||
8513 | /* And override the new tag if we have a Tag_also_compatible_with on the | |
8514 | input. */ | |
8515 | ||
8516 | if ((newtag == T(V6_M) && secondary_compat == T(V4T)) | |
8517 | || (newtag == T(V4T) && secondary_compat == T(V6_M))) | |
8518 | newtag = T(V4T_PLUS_V6_M); | |
8519 | ||
8520 | tagl = (oldtag < newtag) ? oldtag : newtag; | |
8521 | result = tagh = (oldtag > newtag) ? oldtag : newtag; | |
8522 | ||
8523 | /* Architectures before V6KZ add features monotonically. */ | |
8524 | if (tagh <= TAG_CPU_ARCH_V6KZ) | |
8525 | return result; | |
8526 | ||
8527 | result = comb[tagh - T(V6T2)][tagl]; | |
8528 | ||
8529 | /* Use Tag_CPU_arch == V4T and Tag_also_compatible_with (Tag_CPU_arch V6_M) | |
8530 | as the canonical version. */ | |
8531 | if (result == T(V4T_PLUS_V6_M)) | |
8532 | { | |
8533 | result = T(V4T); | |
8534 | *secondary_compat_out = T(V6_M); | |
8535 | } | |
8536 | else | |
8537 | *secondary_compat_out = -1; | |
8538 | ||
8539 | if (result == -1) | |
8540 | { | |
8541 | _bfd_error_handler (_("ERROR: %B: Conflicting CPU architectures %d/%d"), | |
8542 | ibfd, oldtag, newtag); | |
8543 | return -1; | |
8544 | } | |
8545 | ||
8546 | return result; | |
8547 | #undef T | |
8e79c3df CM |
8548 | } |
8549 | ||
ee065d83 PB |
8550 | /* Merge EABI object attributes from IBFD into OBFD. Raise an error if there |
8551 | are conflicting attributes. */ | |
906e58ca | 8552 | |
ee065d83 PB |
8553 | static bfd_boolean |
8554 | elf32_arm_merge_eabi_attributes (bfd *ibfd, bfd *obfd) | |
8555 | { | |
104d59d1 JM |
8556 | obj_attribute *in_attr; |
8557 | obj_attribute *out_attr; | |
8558 | obj_attribute_list *in_list; | |
8e79c3df | 8559 | obj_attribute_list *out_list; |
91e22acd | 8560 | obj_attribute_list **out_listp; |
ee065d83 PB |
8561 | /* Some tags have 0 = don't care, 1 = strong requirement, |
8562 | 2 = weak requirement. */ | |
91e22acd | 8563 | static const int order_021[3] = {0, 2, 1}; |
b1cc4aeb PB |
8564 | /* For use with Tag_VFP_arch. */ |
8565 | static const int order_01243[5] = {0, 1, 2, 4, 3}; | |
ee065d83 | 8566 | int i; |
91e22acd | 8567 | bfd_boolean result = TRUE; |
ee065d83 | 8568 | |
104d59d1 | 8569 | if (!elf_known_obj_attributes_proc (obfd)[0].i) |
ee065d83 PB |
8570 | { |
8571 | /* This is the first object. Copy the attributes. */ | |
104d59d1 | 8572 | _bfd_elf_copy_obj_attributes (ibfd, obfd); |
004ae526 PB |
8573 | |
8574 | /* Use the Tag_null value to indicate the attributes have been | |
8575 | initialized. */ | |
104d59d1 | 8576 | elf_known_obj_attributes_proc (obfd)[0].i = 1; |
004ae526 | 8577 | |
ee065d83 PB |
8578 | return TRUE; |
8579 | } | |
8580 | ||
104d59d1 JM |
8581 | in_attr = elf_known_obj_attributes_proc (ibfd); |
8582 | out_attr = elf_known_obj_attributes_proc (obfd); | |
ee065d83 PB |
8583 | /* This needs to happen before Tag_ABI_FP_number_model is merged. */ |
8584 | if (in_attr[Tag_ABI_VFP_args].i != out_attr[Tag_ABI_VFP_args].i) | |
8585 | { | |
8e79c3df | 8586 | /* Ignore mismatches if the object doesn't use floating point. */ |
ee065d83 PB |
8587 | if (out_attr[Tag_ABI_FP_number_model].i == 0) |
8588 | out_attr[Tag_ABI_VFP_args].i = in_attr[Tag_ABI_VFP_args].i; | |
8589 | else if (in_attr[Tag_ABI_FP_number_model].i != 0) | |
8590 | { | |
8591 | _bfd_error_handler | |
8592 | (_("ERROR: %B uses VFP register arguments, %B does not"), | |
8593 | ibfd, obfd); | |
91e22acd | 8594 | result = FALSE; |
ee065d83 PB |
8595 | } |
8596 | } | |
8597 | ||
104d59d1 | 8598 | for (i = 4; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++) |
ee065d83 PB |
8599 | { |
8600 | /* Merge this attribute with existing attributes. */ | |
8601 | switch (i) | |
8602 | { | |
8603 | case Tag_CPU_raw_name: | |
8604 | case Tag_CPU_name: | |
91e22acd | 8605 | /* These are merged after Tag_CPU_arch. */ |
ee065d83 PB |
8606 | break; |
8607 | ||
8608 | case Tag_ABI_optimization_goals: | |
8609 | case Tag_ABI_FP_optimization_goals: | |
8610 | /* Use the first value seen. */ | |
8611 | break; | |
8612 | ||
8613 | case Tag_CPU_arch: | |
91e22acd AS |
8614 | { |
8615 | int secondary_compat = -1, secondary_compat_out = -1; | |
8616 | unsigned int saved_out_attr = out_attr[i].i; | |
8617 | static const char *name_table[] = { | |
8618 | /* These aren't real CPU names, but we can't guess | |
8619 | that from the architecture version alone. */ | |
8620 | "Pre v4", | |
8621 | "ARM v4", | |
8622 | "ARM v4T", | |
8623 | "ARM v5T", | |
8624 | "ARM v5TE", | |
8625 | "ARM v5TEJ", | |
8626 | "ARM v6", | |
8627 | "ARM v6KZ", | |
8628 | "ARM v6T2", | |
8629 | "ARM v6K", | |
8630 | "ARM v7", | |
8631 | "ARM v6-M", | |
8632 | "ARM v6S-M" | |
8633 | }; | |
8634 | ||
8635 | /* Merge Tag_CPU_arch and Tag_also_compatible_with. */ | |
8636 | secondary_compat = get_secondary_compatible_arch (ibfd); | |
8637 | secondary_compat_out = get_secondary_compatible_arch (obfd); | |
8638 | out_attr[i].i = tag_cpu_arch_combine (ibfd, out_attr[i].i, | |
8639 | &secondary_compat_out, | |
8640 | in_attr[i].i, | |
8641 | secondary_compat); | |
8642 | set_secondary_compatible_arch (obfd, secondary_compat_out); | |
8643 | ||
8644 | /* Merge Tag_CPU_name and Tag_CPU_raw_name. */ | |
8645 | if (out_attr[i].i == saved_out_attr) | |
8646 | ; /* Leave the names alone. */ | |
8647 | else if (out_attr[i].i == in_attr[i].i) | |
8648 | { | |
8649 | /* The output architecture has been changed to match the | |
8650 | input architecture. Use the input names. */ | |
8651 | out_attr[Tag_CPU_name].s = in_attr[Tag_CPU_name].s | |
8652 | ? _bfd_elf_attr_strdup (obfd, in_attr[Tag_CPU_name].s) | |
8653 | : NULL; | |
8654 | out_attr[Tag_CPU_raw_name].s = in_attr[Tag_CPU_raw_name].s | |
8655 | ? _bfd_elf_attr_strdup (obfd, in_attr[Tag_CPU_raw_name].s) | |
8656 | : NULL; | |
8657 | } | |
8658 | else | |
8659 | { | |
8660 | out_attr[Tag_CPU_name].s = NULL; | |
8661 | out_attr[Tag_CPU_raw_name].s = NULL; | |
8662 | } | |
8663 | ||
8664 | /* If we still don't have a value for Tag_CPU_name, | |
8665 | make one up now. Tag_CPU_raw_name remains blank. */ | |
8666 | if (out_attr[Tag_CPU_name].s == NULL | |
8667 | && out_attr[i].i < ARRAY_SIZE (name_table)) | |
8668 | out_attr[Tag_CPU_name].s = | |
8669 | _bfd_elf_attr_strdup (obfd, name_table[out_attr[i].i]); | |
8670 | } | |
8671 | break; | |
8672 | ||
ee065d83 PB |
8673 | case Tag_ARM_ISA_use: |
8674 | case Tag_THUMB_ISA_use: | |
ee065d83 | 8675 | case Tag_WMMX_arch: |
91e22acd AS |
8676 | case Tag_Advanced_SIMD_arch: |
8677 | /* ??? Do Advanced_SIMD (NEON) and WMMX conflict? */ | |
ee065d83 | 8678 | case Tag_ABI_FP_rounding: |
ee065d83 PB |
8679 | case Tag_ABI_FP_exceptions: |
8680 | case Tag_ABI_FP_user_exceptions: | |
8681 | case Tag_ABI_FP_number_model: | |
91e22acd AS |
8682 | case Tag_VFP_HP_extension: |
8683 | case Tag_CPU_unaligned_access: | |
8684 | case Tag_T2EE_use: | |
8685 | case Tag_Virtualization_use: | |
8686 | case Tag_MPextension_use: | |
ee065d83 PB |
8687 | /* Use the largest value specified. */ |
8688 | if (in_attr[i].i > out_attr[i].i) | |
8689 | out_attr[i].i = in_attr[i].i; | |
8690 | break; | |
8691 | ||
91e22acd AS |
8692 | case Tag_ABI_align8_preserved: |
8693 | case Tag_ABI_PCS_RO_data: | |
8694 | /* Use the smallest value specified. */ | |
8695 | if (in_attr[i].i < out_attr[i].i) | |
8696 | out_attr[i].i = in_attr[i].i; | |
8697 | break; | |
8698 | ||
8699 | case Tag_ABI_align8_needed: | |
8700 | if ((in_attr[i].i > 0 || out_attr[i].i > 0) | |
8701 | && (in_attr[Tag_ABI_align8_preserved].i == 0 | |
8702 | || out_attr[Tag_ABI_align8_preserved].i == 0)) | |
ee065d83 | 8703 | { |
91e22acd AS |
8704 | /* This error message should be enabled once all non-conformant |
8705 | binaries in the toolchain have had the attributes set | |
8706 | properly. | |
ee065d83 | 8707 | _bfd_error_handler |
91e22acd AS |
8708 | (_("ERROR: %B: 8-byte data alignment conflicts with %B"), |
8709 | obfd, ibfd); | |
8710 | result = FALSE; */ | |
ee065d83 | 8711 | } |
91e22acd AS |
8712 | /* Fall through. */ |
8713 | case Tag_ABI_FP_denormal: | |
8714 | case Tag_ABI_PCS_GOT_use: | |
8715 | /* Use the "greatest" from the sequence 0, 2, 1, or the largest | |
8716 | value if greater than 2 (for future-proofing). */ | |
8717 | if ((in_attr[i].i > 2 && in_attr[i].i > out_attr[i].i) | |
8718 | || (in_attr[i].i <= 2 && out_attr[i].i <= 2 | |
8719 | && order_021[in_attr[i].i] > order_021[out_attr[i].i])) | |
ee065d83 PB |
8720 | out_attr[i].i = in_attr[i].i; |
8721 | break; | |
91e22acd AS |
8722 | |
8723 | ||
8724 | case Tag_CPU_arch_profile: | |
8725 | if (out_attr[i].i != in_attr[i].i) | |
8726 | { | |
8727 | /* 0 will merge with anything. | |
8728 | 'A' and 'S' merge to 'A'. | |
8729 | 'R' and 'S' merge to 'R'. | |
8730 | 'M' and 'A|R|S' is an error. */ | |
8731 | if (out_attr[i].i == 0 | |
8732 | || (out_attr[i].i == 'S' | |
8733 | && (in_attr[i].i == 'A' || in_attr[i].i == 'R'))) | |
8734 | out_attr[i].i = in_attr[i].i; | |
8735 | else if (in_attr[i].i == 0 | |
8736 | || (in_attr[i].i == 'S' | |
8737 | && (out_attr[i].i == 'A' || out_attr[i].i == 'R'))) | |
8738 | ; /* Do nothing. */ | |
8739 | else | |
8740 | { | |
8741 | _bfd_error_handler | |
8742 | (_("ERROR: %B: Conflicting architecture profiles %c/%c"), | |
8743 | ibfd, | |
8744 | in_attr[i].i ? in_attr[i].i : '0', | |
8745 | out_attr[i].i ? out_attr[i].i : '0'); | |
8746 | result = FALSE; | |
8747 | } | |
8748 | } | |
8749 | break; | |
b1cc4aeb | 8750 | case Tag_VFP_arch: |
91e22acd AS |
8751 | /* Use the "greatest" from the sequence 0, 1, 2, 4, 3, or the |
8752 | largest value if greater than 4 (for future-proofing). */ | |
8753 | if ((in_attr[i].i > 4 && in_attr[i].i > out_attr[i].i) | |
8754 | || (in_attr[i].i <= 4 && out_attr[i].i <= 4 | |
8755 | && order_01243[in_attr[i].i] > order_01243[out_attr[i].i])) | |
b1cc4aeb PB |
8756 | out_attr[i].i = in_attr[i].i; |
8757 | break; | |
ee065d83 PB |
8758 | case Tag_PCS_config: |
8759 | if (out_attr[i].i == 0) | |
8760 | out_attr[i].i = in_attr[i].i; | |
8761 | else if (in_attr[i].i != 0 && out_attr[i].i != 0) | |
8762 | { | |
8763 | /* It's sometimes ok to mix different configs, so this is only | |
8764 | a warning. */ | |
8765 | _bfd_error_handler | |
8766 | (_("Warning: %B: Conflicting platform configuration"), ibfd); | |
8767 | } | |
8768 | break; | |
8769 | case Tag_ABI_PCS_R9_use: | |
004ae526 PB |
8770 | if (in_attr[i].i != out_attr[i].i |
8771 | && out_attr[i].i != AEABI_R9_unused | |
ee065d83 PB |
8772 | && in_attr[i].i != AEABI_R9_unused) |
8773 | { | |
8774 | _bfd_error_handler | |
8775 | (_("ERROR: %B: Conflicting use of R9"), ibfd); | |
91e22acd | 8776 | result = FALSE; |
ee065d83 PB |
8777 | } |
8778 | if (out_attr[i].i == AEABI_R9_unused) | |
8779 | out_attr[i].i = in_attr[i].i; | |
8780 | break; | |
8781 | case Tag_ABI_PCS_RW_data: | |
8782 | if (in_attr[i].i == AEABI_PCS_RW_data_SBrel | |
8783 | && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_SB | |
8784 | && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_unused) | |
8785 | { | |
8786 | _bfd_error_handler | |
8787 | (_("ERROR: %B: SB relative addressing conflicts with use of R9"), | |
8788 | ibfd); | |
91e22acd | 8789 | result = FALSE; |
ee065d83 PB |
8790 | } |
8791 | /* Use the smallest value specified. */ | |
8792 | if (in_attr[i].i < out_attr[i].i) | |
8793 | out_attr[i].i = in_attr[i].i; | |
8794 | break; | |
ee065d83 | 8795 | case Tag_ABI_PCS_wchar_t: |
a9dc9481 JM |
8796 | if (out_attr[i].i && in_attr[i].i && out_attr[i].i != in_attr[i].i |
8797 | && !elf_arm_tdata (obfd)->no_wchar_size_warning) | |
ee065d83 PB |
8798 | { |
8799 | _bfd_error_handler | |
a9dc9481 JM |
8800 | (_("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"), |
8801 | ibfd, in_attr[i].i, out_attr[i].i); | |
ee065d83 | 8802 | } |
a9dc9481 | 8803 | else if (in_attr[i].i && !out_attr[i].i) |
ee065d83 PB |
8804 | out_attr[i].i = in_attr[i].i; |
8805 | break; | |
ee065d83 PB |
8806 | case Tag_ABI_enum_size: |
8807 | if (in_attr[i].i != AEABI_enum_unused) | |
8808 | { | |
8809 | if (out_attr[i].i == AEABI_enum_unused | |
8810 | || out_attr[i].i == AEABI_enum_forced_wide) | |
8811 | { | |
8812 | /* The existing object is compatible with anything. | |
8813 | Use whatever requirements the new object has. */ | |
8814 | out_attr[i].i = in_attr[i].i; | |
8815 | } | |
8816 | else if (in_attr[i].i != AEABI_enum_forced_wide | |
bf21ed78 | 8817 | && out_attr[i].i != in_attr[i].i |
0ffa91dd | 8818 | && !elf_arm_tdata (obfd)->no_enum_size_warning) |
ee065d83 | 8819 | { |
91e22acd | 8820 | static const char *aeabi_enum_names[] = |
bf21ed78 | 8821 | { "", "variable-size", "32-bit", "" }; |
91e22acd AS |
8822 | const char *in_name = |
8823 | in_attr[i].i < ARRAY_SIZE(aeabi_enum_names) | |
8824 | ? aeabi_enum_names[in_attr[i].i] | |
8825 | : "<unknown>"; | |
8826 | const char *out_name = | |
8827 | out_attr[i].i < ARRAY_SIZE(aeabi_enum_names) | |
8828 | ? aeabi_enum_names[out_attr[i].i] | |
8829 | : "<unknown>"; | |
ee065d83 | 8830 | _bfd_error_handler |
bf21ed78 | 8831 | (_("warning: %B uses %s enums yet the output is to use %s enums; use of enum values across objects may fail"), |
91e22acd | 8832 | ibfd, in_name, out_name); |
ee065d83 PB |
8833 | } |
8834 | } | |
8835 | break; | |
8836 | case Tag_ABI_VFP_args: | |
8837 | /* Aready done. */ | |
8838 | break; | |
8839 | case Tag_ABI_WMMX_args: | |
8840 | if (in_attr[i].i != out_attr[i].i) | |
8841 | { | |
8842 | _bfd_error_handler | |
8843 | (_("ERROR: %B uses iWMMXt register arguments, %B does not"), | |
8844 | ibfd, obfd); | |
91e22acd | 8845 | result = FALSE; |
ee065d83 PB |
8846 | } |
8847 | break; | |
7b86a9fa AS |
8848 | case Tag_compatibility: |
8849 | /* Merged in target-independent code. */ | |
8850 | break; | |
91e22acd AS |
8851 | case Tag_ABI_HardFP_use: |
8852 | /* 1 (SP) and 2 (DP) conflict, so combine to 3 (SP & DP). */ | |
8853 | if ((in_attr[i].i == 1 && out_attr[i].i == 2) | |
8854 | || (in_attr[i].i == 2 && out_attr[i].i == 1)) | |
8855 | out_attr[i].i = 3; | |
8856 | else if (in_attr[i].i > out_attr[i].i) | |
8857 | out_attr[i].i = in_attr[i].i; | |
8858 | break; | |
8859 | case Tag_ABI_FP_16bit_format: | |
8860 | if (in_attr[i].i != 0 && out_attr[i].i != 0) | |
8861 | { | |
8862 | if (in_attr[i].i != out_attr[i].i) | |
8863 | { | |
8864 | _bfd_error_handler | |
8865 | (_("ERROR: fp16 format mismatch between %B and %B"), | |
8866 | ibfd, obfd); | |
8867 | result = FALSE; | |
8868 | } | |
8869 | } | |
8870 | if (in_attr[i].i != 0) | |
8871 | out_attr[i].i = in_attr[i].i; | |
8872 | break; | |
7b86a9fa | 8873 | |
91e22acd | 8874 | case Tag_nodefaults: |
2d0bb761 AS |
8875 | /* This tag is set if it exists, but the value is unused (and is |
8876 | typically zero). We don't actually need to do anything here - | |
8877 | the merge happens automatically when the type flags are merged | |
8878 | below. */ | |
91e22acd AS |
8879 | break; |
8880 | case Tag_also_compatible_with: | |
8881 | /* Already done in Tag_CPU_arch. */ | |
8882 | break; | |
8883 | case Tag_conformance: | |
8884 | /* Keep the attribute if it matches. Throw it away otherwise. | |
8885 | No attribute means no claim to conform. */ | |
8886 | if (!in_attr[i].s || !out_attr[i].s | |
8887 | || strcmp (in_attr[i].s, out_attr[i].s) != 0) | |
8888 | out_attr[i].s = NULL; | |
8889 | break; | |
3cfad14c | 8890 | |
91e22acd | 8891 | default: |
3cfad14c | 8892 | { |
91e22acd AS |
8893 | bfd *err_bfd = NULL; |
8894 | ||
8895 | /* The "known_obj_attributes" table does contain some undefined | |
8896 | attributes. Ensure that there are unused. */ | |
8897 | if (out_attr[i].i != 0 || out_attr[i].s != NULL) | |
8898 | err_bfd = obfd; | |
8899 | else if (in_attr[i].i != 0 || in_attr[i].s != NULL) | |
8900 | err_bfd = ibfd; | |
8901 | ||
8902 | if (err_bfd != NULL) | |
8903 | { | |
8904 | /* Attribute numbers >=64 (mod 128) can be safely ignored. */ | |
8905 | if ((i & 127) < 64) | |
8906 | { | |
8907 | _bfd_error_handler | |
8908 | (_("%B: Unknown mandatory EABI object attribute %d"), | |
8909 | err_bfd, i); | |
8910 | bfd_set_error (bfd_error_bad_value); | |
8911 | result = FALSE; | |
8912 | } | |
8913 | else | |
8914 | { | |
8915 | _bfd_error_handler | |
8916 | (_("Warning: %B: Unknown EABI object attribute %d"), | |
8917 | err_bfd, i); | |
8918 | } | |
8919 | } | |
8920 | ||
8921 | /* Only pass on attributes that match in both inputs. */ | |
8922 | if (in_attr[i].i != out_attr[i].i | |
8923 | || in_attr[i].s != out_attr[i].s | |
8924 | || (in_attr[i].s != NULL && out_attr[i].s != NULL | |
8925 | && strcmp (in_attr[i].s, out_attr[i].s) != 0)) | |
8926 | { | |
8927 | out_attr[i].i = 0; | |
8928 | out_attr[i].s = NULL; | |
8929 | } | |
3cfad14c | 8930 | } |
91e22acd AS |
8931 | } |
8932 | ||
8933 | /* If out_attr was copied from in_attr then it won't have a type yet. */ | |
8934 | if (in_attr[i].type && !out_attr[i].type) | |
8935 | out_attr[i].type = in_attr[i].type; | |
ee065d83 PB |
8936 | } |
8937 | ||
104d59d1 JM |
8938 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
8939 | _bfd_elf_merge_object_attributes (ibfd, obfd); | |
ee065d83 | 8940 | |
104d59d1 JM |
8941 | /* Check for any attributes not known on ARM. */ |
8942 | in_list = elf_other_obj_attributes_proc (ibfd); | |
91e22acd AS |
8943 | out_listp = &elf_other_obj_attributes_proc (obfd); |
8944 | out_list = *out_listp; | |
8e79c3df | 8945 | |
91e22acd | 8946 | for (; in_list || out_list; ) |
ee065d83 | 8947 | { |
91e22acd AS |
8948 | bfd *err_bfd = NULL; |
8949 | int err_tag = 0; | |
8e79c3df CM |
8950 | |
8951 | /* The tags for each list are in numerical order. */ | |
8952 | /* If the tags are equal, then merge. */ | |
91e22acd | 8953 | if (out_list && (!in_list || in_list->tag > out_list->tag)) |
8e79c3df | 8954 | { |
91e22acd AS |
8955 | /* This attribute only exists in obfd. We can't merge, and we don't |
8956 | know what the tag means, so delete it. */ | |
8957 | err_bfd = obfd; | |
8958 | err_tag = out_list->tag; | |
8959 | *out_listp = out_list->next; | |
8960 | out_list = *out_listp; | |
8e79c3df | 8961 | } |
91e22acd | 8962 | else if (in_list && (!out_list || in_list->tag < out_list->tag)) |
8e79c3df | 8963 | { |
91e22acd AS |
8964 | /* This attribute only exists in ibfd. We can't merge, and we don't |
8965 | know what the tag means, so ignore it. */ | |
8966 | err_bfd = ibfd; | |
8967 | err_tag = in_list->tag; | |
8e79c3df | 8968 | in_list = in_list->next; |
eb111b1f | 8969 | } |
91e22acd AS |
8970 | else /* The tags are equal. */ |
8971 | { | |
8972 | /* As present, all attributes in the list are unknown, and | |
8973 | therefore can't be merged meaningfully. */ | |
8974 | err_bfd = obfd; | |
8975 | err_tag = out_list->tag; | |
8976 | ||
8977 | /* Only pass on attributes that match in both inputs. */ | |
8978 | if (in_list->attr.i != out_list->attr.i | |
8979 | || in_list->attr.s != out_list->attr.s | |
8980 | || (in_list->attr.s && out_list->attr.s | |
8981 | && strcmp (in_list->attr.s, out_list->attr.s) != 0)) | |
8982 | { | |
8983 | /* No match. Delete the attribute. */ | |
8984 | *out_listp = out_list->next; | |
8985 | out_list = *out_listp; | |
8986 | } | |
8987 | else | |
8988 | { | |
8989 | /* Matched. Keep the attribute and move to the next. */ | |
8990 | out_list = out_list->next; | |
8991 | in_list = in_list->next; | |
8992 | } | |
8993 | } | |
8994 | ||
8995 | if (err_bfd) | |
8996 | { | |
8997 | /* Attribute numbers >=64 (mod 128) can be safely ignored. */ | |
8998 | if ((err_tag & 127) < 64) | |
8999 | { | |
9000 | _bfd_error_handler | |
9001 | (_("%B: Unknown mandatory EABI object attribute %d"), | |
9002 | err_bfd, err_tag); | |
9003 | bfd_set_error (bfd_error_bad_value); | |
9004 | result = FALSE; | |
9005 | } | |
9006 | else | |
9007 | { | |
9008 | _bfd_error_handler | |
9009 | (_("Warning: %B: Unknown EABI object attribute %d"), | |
9010 | err_bfd, err_tag); | |
9011 | } | |
9012 | } | |
ee065d83 | 9013 | } |
91e22acd | 9014 | return result; |
252b5132 RH |
9015 | } |
9016 | ||
3a4a14e9 PB |
9017 | |
9018 | /* Return TRUE if the two EABI versions are incompatible. */ | |
9019 | ||
9020 | static bfd_boolean | |
9021 | elf32_arm_versions_compatible (unsigned iver, unsigned over) | |
9022 | { | |
9023 | /* v4 and v5 are the same spec before and after it was released, | |
9024 | so allow mixing them. */ | |
9025 | if ((iver == EF_ARM_EABI_VER4 && over == EF_ARM_EABI_VER5) | |
9026 | || (iver == EF_ARM_EABI_VER5 && over == EF_ARM_EABI_VER4)) | |
9027 | return TRUE; | |
9028 | ||
9029 | return (iver == over); | |
9030 | } | |
9031 | ||
252b5132 RH |
9032 | /* Merge backend specific data from an object file to the output |
9033 | object file when linking. */ | |
9b485d32 | 9034 | |
b34976b6 | 9035 | static bfd_boolean |
57e8b36a | 9036 | elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd) |
252b5132 RH |
9037 | { |
9038 | flagword out_flags; | |
9039 | flagword in_flags; | |
b34976b6 | 9040 | bfd_boolean flags_compatible = TRUE; |
cf919dfd | 9041 | asection *sec; |
252b5132 | 9042 | |
9b485d32 | 9043 | /* Check if we have the same endianess. */ |
82e51918 | 9044 | if (! _bfd_generic_verify_endian_match (ibfd, obfd)) |
b34976b6 | 9045 | return FALSE; |
1fe494a5 | 9046 | |
0ffa91dd | 9047 | if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd)) |
b34976b6 | 9048 | return TRUE; |
252b5132 | 9049 | |
ee065d83 PB |
9050 | if (!elf32_arm_merge_eabi_attributes (ibfd, obfd)) |
9051 | return FALSE; | |
9052 | ||
252b5132 RH |
9053 | /* The input BFD must have had its flags initialised. */ |
9054 | /* The following seems bogus to me -- The flags are initialized in | |
9055 | the assembler but I don't think an elf_flags_init field is | |
9b485d32 | 9056 | written into the object. */ |
252b5132 RH |
9057 | /* BFD_ASSERT (elf_flags_init (ibfd)); */ |
9058 | ||
9059 | in_flags = elf_elfheader (ibfd)->e_flags; | |
9060 | out_flags = elf_elfheader (obfd)->e_flags; | |
9061 | ||
23684067 PB |
9062 | /* In theory there is no reason why we couldn't handle this. However |
9063 | in practice it isn't even close to working and there is no real | |
9064 | reason to want it. */ | |
9065 | if (EF_ARM_EABI_VERSION (in_flags) >= EF_ARM_EABI_VER4 | |
c13bb2ea | 9066 | && !(ibfd->flags & DYNAMIC) |
23684067 PB |
9067 | && (in_flags & EF_ARM_BE8)) |
9068 | { | |
8029a119 | 9069 | _bfd_error_handler (_("ERROR: %B is already in final BE8 format"), |
23684067 PB |
9070 | ibfd); |
9071 | return FALSE; | |
9072 | } | |
9073 | ||
252b5132 RH |
9074 | if (!elf_flags_init (obfd)) |
9075 | { | |
fe077fa6 NC |
9076 | /* If the input is the default architecture and had the default |
9077 | flags then do not bother setting the flags for the output | |
9078 | architecture, instead allow future merges to do this. If no | |
9079 | future merges ever set these flags then they will retain their | |
9080 | uninitialised values, which surprise surprise, correspond | |
252b5132 | 9081 | to the default values. */ |
fe077fa6 NC |
9082 | if (bfd_get_arch_info (ibfd)->the_default |
9083 | && elf_elfheader (ibfd)->e_flags == 0) | |
b34976b6 | 9084 | return TRUE; |
252b5132 | 9085 | |
b34976b6 | 9086 | elf_flags_init (obfd) = TRUE; |
252b5132 RH |
9087 | elf_elfheader (obfd)->e_flags = in_flags; |
9088 | ||
9089 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
9090 | && bfd_get_arch_info (obfd)->the_default) | |
9091 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); | |
9092 | ||
b34976b6 | 9093 | return TRUE; |
252b5132 RH |
9094 | } |
9095 | ||
5a6c6817 NC |
9096 | /* Determine what should happen if the input ARM architecture |
9097 | does not match the output ARM architecture. */ | |
9098 | if (! bfd_arm_merge_machines (ibfd, obfd)) | |
9099 | return FALSE; | |
e16bb312 | 9100 | |
1006ba19 | 9101 | /* Identical flags must be compatible. */ |
252b5132 | 9102 | if (in_flags == out_flags) |
b34976b6 | 9103 | return TRUE; |
252b5132 | 9104 | |
35a0f415 DJ |
9105 | /* Check to see if the input BFD actually contains any sections. If |
9106 | not, its flags may not have been initialised either, but it | |
8e3de13a | 9107 | cannot actually cause any incompatiblity. Do not short-circuit |
35a0f415 | 9108 | dynamic objects; their section list may be emptied by |
d1f161ea | 9109 | elf_link_add_object_symbols. |
35a0f415 | 9110 | |
d1f161ea NC |
9111 | Also check to see if there are no code sections in the input. |
9112 | In this case there is no need to check for code specific flags. | |
9113 | XXX - do we need to worry about floating-point format compatability | |
9114 | in data sections ? */ | |
35a0f415 | 9115 | if (!(ibfd->flags & DYNAMIC)) |
cf919dfd | 9116 | { |
35a0f415 | 9117 | bfd_boolean null_input_bfd = TRUE; |
d1f161ea | 9118 | bfd_boolean only_data_sections = TRUE; |
35a0f415 DJ |
9119 | |
9120 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
cf919dfd | 9121 | { |
35a0f415 DJ |
9122 | /* Ignore synthetic glue sections. */ |
9123 | if (strcmp (sec->name, ".glue_7") | |
9124 | && strcmp (sec->name, ".glue_7t")) | |
9125 | { | |
d1f161ea NC |
9126 | if ((bfd_get_section_flags (ibfd, sec) |
9127 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
9128 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
9129 | only_data_sections = FALSE; | |
9130 | ||
35a0f415 DJ |
9131 | null_input_bfd = FALSE; |
9132 | break; | |
9133 | } | |
cf919dfd | 9134 | } |
d1f161ea NC |
9135 | |
9136 | if (null_input_bfd || only_data_sections) | |
35a0f415 | 9137 | return TRUE; |
cf919dfd | 9138 | } |
cf919dfd | 9139 | |
252b5132 | 9140 | /* Complain about various flag mismatches. */ |
3a4a14e9 PB |
9141 | if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags), |
9142 | EF_ARM_EABI_VERSION (out_flags))) | |
fc830a83 | 9143 | { |
d003868e | 9144 | _bfd_error_handler |
3656d5e3 | 9145 | (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"), |
d003868e AM |
9146 | ibfd, obfd, |
9147 | (in_flags & EF_ARM_EABIMASK) >> 24, | |
9148 | (out_flags & EF_ARM_EABIMASK) >> 24); | |
b34976b6 | 9149 | return FALSE; |
fc830a83 | 9150 | } |
252b5132 | 9151 | |
1006ba19 | 9152 | /* Not sure what needs to be checked for EABI versions >= 1. */ |
00a97672 RS |
9153 | /* VxWorks libraries do not use these flags. */ |
9154 | if (get_elf_backend_data (obfd) != &elf32_arm_vxworks_bed | |
9155 | && get_elf_backend_data (ibfd) != &elf32_arm_vxworks_bed | |
9156 | && EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN) | |
1006ba19 | 9157 | { |
fd2ec330 | 9158 | if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26)) |
1006ba19 | 9159 | { |
d003868e AM |
9160 | _bfd_error_handler |
9161 | (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"), | |
9162 | ibfd, obfd, | |
9163 | in_flags & EF_ARM_APCS_26 ? 26 : 32, | |
9164 | out_flags & EF_ARM_APCS_26 ? 26 : 32); | |
b34976b6 | 9165 | flags_compatible = FALSE; |
1006ba19 | 9166 | } |
252b5132 | 9167 | |
fd2ec330 | 9168 | if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT)) |
1006ba19 | 9169 | { |
5eefb65f | 9170 | if (in_flags & EF_ARM_APCS_FLOAT) |
d003868e AM |
9171 | _bfd_error_handler |
9172 | (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"), | |
9173 | ibfd, obfd); | |
5eefb65f | 9174 | else |
d003868e AM |
9175 | _bfd_error_handler |
9176 | (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"), | |
9177 | ibfd, obfd); | |
63b0f745 | 9178 | |
b34976b6 | 9179 | flags_compatible = FALSE; |
1006ba19 | 9180 | } |
252b5132 | 9181 | |
96a846ea | 9182 | if ((in_flags & EF_ARM_VFP_FLOAT) != (out_flags & EF_ARM_VFP_FLOAT)) |
1006ba19 | 9183 | { |
96a846ea | 9184 | if (in_flags & EF_ARM_VFP_FLOAT) |
d003868e AM |
9185 | _bfd_error_handler |
9186 | (_("ERROR: %B uses VFP instructions, whereas %B does not"), | |
9187 | ibfd, obfd); | |
5eefb65f | 9188 | else |
d003868e AM |
9189 | _bfd_error_handler |
9190 | (_("ERROR: %B uses FPA instructions, whereas %B does not"), | |
9191 | ibfd, obfd); | |
fde78edd NC |
9192 | |
9193 | flags_compatible = FALSE; | |
9194 | } | |
9195 | ||
9196 | if ((in_flags & EF_ARM_MAVERICK_FLOAT) != (out_flags & EF_ARM_MAVERICK_FLOAT)) | |
9197 | { | |
9198 | if (in_flags & EF_ARM_MAVERICK_FLOAT) | |
d003868e AM |
9199 | _bfd_error_handler |
9200 | (_("ERROR: %B uses Maverick instructions, whereas %B does not"), | |
9201 | ibfd, obfd); | |
fde78edd | 9202 | else |
d003868e AM |
9203 | _bfd_error_handler |
9204 | (_("ERROR: %B does not use Maverick instructions, whereas %B does"), | |
9205 | ibfd, obfd); | |
63b0f745 | 9206 | |
b34976b6 | 9207 | flags_compatible = FALSE; |
1006ba19 | 9208 | } |
96a846ea RE |
9209 | |
9210 | #ifdef EF_ARM_SOFT_FLOAT | |
9211 | if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT)) | |
9212 | { | |
9213 | /* We can allow interworking between code that is VFP format | |
9214 | layout, and uses either soft float or integer regs for | |
9215 | passing floating point arguments and results. We already | |
9216 | know that the APCS_FLOAT flags match; similarly for VFP | |
9217 | flags. */ | |
9218 | if ((in_flags & EF_ARM_APCS_FLOAT) != 0 | |
9219 | || (in_flags & EF_ARM_VFP_FLOAT) == 0) | |
9220 | { | |
9221 | if (in_flags & EF_ARM_SOFT_FLOAT) | |
d003868e AM |
9222 | _bfd_error_handler |
9223 | (_("ERROR: %B uses software FP, whereas %B uses hardware FP"), | |
9224 | ibfd, obfd); | |
96a846ea | 9225 | else |
d003868e AM |
9226 | _bfd_error_handler |
9227 | (_("ERROR: %B uses hardware FP, whereas %B uses software FP"), | |
9228 | ibfd, obfd); | |
96a846ea | 9229 | |
b34976b6 | 9230 | flags_compatible = FALSE; |
96a846ea RE |
9231 | } |
9232 | } | |
ee43f35e | 9233 | #endif |
252b5132 | 9234 | |
1006ba19 | 9235 | /* Interworking mismatch is only a warning. */ |
fd2ec330 | 9236 | if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK)) |
8f615d07 | 9237 | { |
e3c8793a NC |
9238 | if (in_flags & EF_ARM_INTERWORK) |
9239 | { | |
d003868e AM |
9240 | _bfd_error_handler |
9241 | (_("Warning: %B supports interworking, whereas %B does not"), | |
9242 | ibfd, obfd); | |
e3c8793a NC |
9243 | } |
9244 | else | |
9245 | { | |
d003868e AM |
9246 | _bfd_error_handler |
9247 | (_("Warning: %B does not support interworking, whereas %B does"), | |
9248 | ibfd, obfd); | |
e3c8793a | 9249 | } |
8f615d07 | 9250 | } |
252b5132 | 9251 | } |
63b0f745 | 9252 | |
1006ba19 | 9253 | return flags_compatible; |
252b5132 RH |
9254 | } |
9255 | ||
9b485d32 NC |
9256 | /* Display the flags field. */ |
9257 | ||
b34976b6 | 9258 | static bfd_boolean |
57e8b36a | 9259 | elf32_arm_print_private_bfd_data (bfd *abfd, void * ptr) |
252b5132 | 9260 | { |
fc830a83 NC |
9261 | FILE * file = (FILE *) ptr; |
9262 | unsigned long flags; | |
252b5132 RH |
9263 | |
9264 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
9265 | ||
9266 | /* Print normal ELF private data. */ | |
9267 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
9268 | ||
fc830a83 | 9269 | flags = elf_elfheader (abfd)->e_flags; |
9b485d32 NC |
9270 | /* Ignore init flag - it may not be set, despite the flags field |
9271 | containing valid data. */ | |
252b5132 RH |
9272 | |
9273 | /* xgettext:c-format */ | |
9b485d32 | 9274 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); |
252b5132 | 9275 | |
fc830a83 NC |
9276 | switch (EF_ARM_EABI_VERSION (flags)) |
9277 | { | |
9278 | case EF_ARM_EABI_UNKNOWN: | |
4cc11e76 | 9279 | /* The following flag bits are GNU extensions and not part of the |
fc830a83 NC |
9280 | official ARM ELF extended ABI. Hence they are only decoded if |
9281 | the EABI version is not set. */ | |
fd2ec330 | 9282 | if (flags & EF_ARM_INTERWORK) |
9b485d32 | 9283 | fprintf (file, _(" [interworking enabled]")); |
9a5aca8c | 9284 | |
fd2ec330 | 9285 | if (flags & EF_ARM_APCS_26) |
6c571f00 | 9286 | fprintf (file, " [APCS-26]"); |
fc830a83 | 9287 | else |
6c571f00 | 9288 | fprintf (file, " [APCS-32]"); |
9a5aca8c | 9289 | |
96a846ea RE |
9290 | if (flags & EF_ARM_VFP_FLOAT) |
9291 | fprintf (file, _(" [VFP float format]")); | |
fde78edd NC |
9292 | else if (flags & EF_ARM_MAVERICK_FLOAT) |
9293 | fprintf (file, _(" [Maverick float format]")); | |
96a846ea RE |
9294 | else |
9295 | fprintf (file, _(" [FPA float format]")); | |
9296 | ||
fd2ec330 | 9297 | if (flags & EF_ARM_APCS_FLOAT) |
9b485d32 | 9298 | fprintf (file, _(" [floats passed in float registers]")); |
9a5aca8c | 9299 | |
fd2ec330 | 9300 | if (flags & EF_ARM_PIC) |
9b485d32 | 9301 | fprintf (file, _(" [position independent]")); |
fc830a83 | 9302 | |
fd2ec330 | 9303 | if (flags & EF_ARM_NEW_ABI) |
9b485d32 | 9304 | fprintf (file, _(" [new ABI]")); |
9a5aca8c | 9305 | |
fd2ec330 | 9306 | if (flags & EF_ARM_OLD_ABI) |
9b485d32 | 9307 | fprintf (file, _(" [old ABI]")); |
9a5aca8c | 9308 | |
fd2ec330 | 9309 | if (flags & EF_ARM_SOFT_FLOAT) |
9b485d32 | 9310 | fprintf (file, _(" [software FP]")); |
9a5aca8c | 9311 | |
96a846ea RE |
9312 | flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT |
9313 | | EF_ARM_PIC | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI | |
fde78edd NC |
9314 | | EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT |
9315 | | EF_ARM_MAVERICK_FLOAT); | |
fc830a83 | 9316 | break; |
9a5aca8c | 9317 | |
fc830a83 | 9318 | case EF_ARM_EABI_VER1: |
9b485d32 | 9319 | fprintf (file, _(" [Version1 EABI]")); |
9a5aca8c | 9320 | |
fc830a83 | 9321 | if (flags & EF_ARM_SYMSARESORTED) |
9b485d32 | 9322 | fprintf (file, _(" [sorted symbol table]")); |
fc830a83 | 9323 | else |
9b485d32 | 9324 | fprintf (file, _(" [unsorted symbol table]")); |
9a5aca8c | 9325 | |
fc830a83 NC |
9326 | flags &= ~ EF_ARM_SYMSARESORTED; |
9327 | break; | |
9a5aca8c | 9328 | |
fd2ec330 PB |
9329 | case EF_ARM_EABI_VER2: |
9330 | fprintf (file, _(" [Version2 EABI]")); | |
9331 | ||
9332 | if (flags & EF_ARM_SYMSARESORTED) | |
9333 | fprintf (file, _(" [sorted symbol table]")); | |
9334 | else | |
9335 | fprintf (file, _(" [unsorted symbol table]")); | |
9336 | ||
9337 | if (flags & EF_ARM_DYNSYMSUSESEGIDX) | |
9338 | fprintf (file, _(" [dynamic symbols use segment index]")); | |
9339 | ||
9340 | if (flags & EF_ARM_MAPSYMSFIRST) | |
9341 | fprintf (file, _(" [mapping symbols precede others]")); | |
9342 | ||
99e4ae17 | 9343 | flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX |
fd2ec330 PB |
9344 | | EF_ARM_MAPSYMSFIRST); |
9345 | break; | |
9346 | ||
d507cf36 PB |
9347 | case EF_ARM_EABI_VER3: |
9348 | fprintf (file, _(" [Version3 EABI]")); | |
8cb51566 PB |
9349 | break; |
9350 | ||
9351 | case EF_ARM_EABI_VER4: | |
9352 | fprintf (file, _(" [Version4 EABI]")); | |
3a4a14e9 | 9353 | goto eabi; |
d507cf36 | 9354 | |
3a4a14e9 PB |
9355 | case EF_ARM_EABI_VER5: |
9356 | fprintf (file, _(" [Version5 EABI]")); | |
9357 | eabi: | |
d507cf36 PB |
9358 | if (flags & EF_ARM_BE8) |
9359 | fprintf (file, _(" [BE8]")); | |
9360 | ||
9361 | if (flags & EF_ARM_LE8) | |
9362 | fprintf (file, _(" [LE8]")); | |
9363 | ||
9364 | flags &= ~(EF_ARM_LE8 | EF_ARM_BE8); | |
9365 | break; | |
9366 | ||
fc830a83 | 9367 | default: |
9b485d32 | 9368 | fprintf (file, _(" <EABI version unrecognised>")); |
fc830a83 NC |
9369 | break; |
9370 | } | |
252b5132 | 9371 | |
fc830a83 | 9372 | flags &= ~ EF_ARM_EABIMASK; |
252b5132 | 9373 | |
fc830a83 | 9374 | if (flags & EF_ARM_RELEXEC) |
9b485d32 | 9375 | fprintf (file, _(" [relocatable executable]")); |
252b5132 | 9376 | |
fc830a83 | 9377 | if (flags & EF_ARM_HASENTRY) |
9b485d32 | 9378 | fprintf (file, _(" [has entry point]")); |
252b5132 | 9379 | |
fc830a83 NC |
9380 | flags &= ~ (EF_ARM_RELEXEC | EF_ARM_HASENTRY); |
9381 | ||
9382 | if (flags) | |
9b485d32 | 9383 | fprintf (file, _("<Unrecognised flag bits set>")); |
9a5aca8c | 9384 | |
252b5132 RH |
9385 | fputc ('\n', file); |
9386 | ||
b34976b6 | 9387 | return TRUE; |
252b5132 RH |
9388 | } |
9389 | ||
9390 | static int | |
57e8b36a | 9391 | elf32_arm_get_symbol_type (Elf_Internal_Sym * elf_sym, int type) |
252b5132 | 9392 | { |
2f0ca46a NC |
9393 | switch (ELF_ST_TYPE (elf_sym->st_info)) |
9394 | { | |
9395 | case STT_ARM_TFUNC: | |
9396 | return ELF_ST_TYPE (elf_sym->st_info); | |
ce855c42 | 9397 | |
2f0ca46a NC |
9398 | case STT_ARM_16BIT: |
9399 | /* If the symbol is not an object, return the STT_ARM_16BIT flag. | |
9400 | This allows us to distinguish between data used by Thumb instructions | |
9401 | and non-data (which is probably code) inside Thumb regions of an | |
9402 | executable. */ | |
1a0eb693 | 9403 | if (type != STT_OBJECT && type != STT_TLS) |
2f0ca46a NC |
9404 | return ELF_ST_TYPE (elf_sym->st_info); |
9405 | break; | |
9a5aca8c | 9406 | |
ce855c42 NC |
9407 | default: |
9408 | break; | |
2f0ca46a NC |
9409 | } |
9410 | ||
9411 | return type; | |
252b5132 | 9412 | } |
f21f3fe0 | 9413 | |
252b5132 | 9414 | static asection * |
07adf181 AM |
9415 | elf32_arm_gc_mark_hook (asection *sec, |
9416 | struct bfd_link_info *info, | |
9417 | Elf_Internal_Rela *rel, | |
9418 | struct elf_link_hash_entry *h, | |
9419 | Elf_Internal_Sym *sym) | |
252b5132 RH |
9420 | { |
9421 | if (h != NULL) | |
07adf181 | 9422 | switch (ELF32_R_TYPE (rel->r_info)) |
252b5132 RH |
9423 | { |
9424 | case R_ARM_GNU_VTINHERIT: | |
9425 | case R_ARM_GNU_VTENTRY: | |
07adf181 AM |
9426 | return NULL; |
9427 | } | |
9ad5cbcf | 9428 | |
07adf181 | 9429 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
252b5132 RH |
9430 | } |
9431 | ||
780a67af NC |
9432 | /* Update the got entry reference counts for the section being removed. */ |
9433 | ||
b34976b6 | 9434 | static bfd_boolean |
ba93b8ac DJ |
9435 | elf32_arm_gc_sweep_hook (bfd * abfd, |
9436 | struct bfd_link_info * info, | |
9437 | asection * sec, | |
9438 | const Elf_Internal_Rela * relocs) | |
252b5132 | 9439 | { |
5e681ec4 PB |
9440 | Elf_Internal_Shdr *symtab_hdr; |
9441 | struct elf_link_hash_entry **sym_hashes; | |
9442 | bfd_signed_vma *local_got_refcounts; | |
9443 | const Elf_Internal_Rela *rel, *relend; | |
eb043451 PB |
9444 | struct elf32_arm_link_hash_table * globals; |
9445 | ||
7dda2462 TG |
9446 | if (info->relocatable) |
9447 | return TRUE; | |
9448 | ||
eb043451 | 9449 | globals = elf32_arm_hash_table (info); |
5e681ec4 PB |
9450 | |
9451 | elf_section_data (sec)->local_dynrel = NULL; | |
9452 | ||
0ffa91dd | 9453 | symtab_hdr = & elf_symtab_hdr (abfd); |
5e681ec4 PB |
9454 | sym_hashes = elf_sym_hashes (abfd); |
9455 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
9456 | ||
906e58ca | 9457 | check_use_blx (globals); |
bd97cb95 | 9458 | |
5e681ec4 PB |
9459 | relend = relocs + sec->reloc_count; |
9460 | for (rel = relocs; rel < relend; rel++) | |
eb043451 | 9461 | { |
3eb128b2 AM |
9462 | unsigned long r_symndx; |
9463 | struct elf_link_hash_entry *h = NULL; | |
eb043451 | 9464 | int r_type; |
5e681ec4 | 9465 | |
3eb128b2 AM |
9466 | r_symndx = ELF32_R_SYM (rel->r_info); |
9467 | if (r_symndx >= symtab_hdr->sh_info) | |
9468 | { | |
9469 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
9470 | while (h->root.type == bfd_link_hash_indirect | |
9471 | || h->root.type == bfd_link_hash_warning) | |
9472 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
9473 | } | |
9474 | ||
eb043451 | 9475 | r_type = ELF32_R_TYPE (rel->r_info); |
eb043451 | 9476 | r_type = arm_real_reloc_type (globals, r_type); |
eb043451 PB |
9477 | switch (r_type) |
9478 | { | |
9479 | case R_ARM_GOT32: | |
eb043451 | 9480 | case R_ARM_GOT_PREL: |
ba93b8ac DJ |
9481 | case R_ARM_TLS_GD32: |
9482 | case R_ARM_TLS_IE32: | |
3eb128b2 | 9483 | if (h != NULL) |
eb043451 | 9484 | { |
eb043451 PB |
9485 | if (h->got.refcount > 0) |
9486 | h->got.refcount -= 1; | |
9487 | } | |
9488 | else if (local_got_refcounts != NULL) | |
9489 | { | |
9490 | if (local_got_refcounts[r_symndx] > 0) | |
9491 | local_got_refcounts[r_symndx] -= 1; | |
9492 | } | |
9493 | break; | |
9494 | ||
ba93b8ac DJ |
9495 | case R_ARM_TLS_LDM32: |
9496 | elf32_arm_hash_table (info)->tls_ldm_got.refcount -= 1; | |
9497 | break; | |
9498 | ||
eb043451 | 9499 | case R_ARM_ABS32: |
bb224fc3 | 9500 | case R_ARM_ABS32_NOI: |
eb043451 | 9501 | case R_ARM_REL32: |
bb224fc3 | 9502 | case R_ARM_REL32_NOI: |
eb043451 PB |
9503 | case R_ARM_PC24: |
9504 | case R_ARM_PLT32: | |
5b5bb741 PB |
9505 | case R_ARM_CALL: |
9506 | case R_ARM_JUMP24: | |
eb043451 | 9507 | case R_ARM_PREL31: |
c19d1205 | 9508 | case R_ARM_THM_CALL: |
bd97cb95 DJ |
9509 | case R_ARM_THM_JUMP24: |
9510 | case R_ARM_THM_JUMP19: | |
b6895b4f PB |
9511 | case R_ARM_MOVW_ABS_NC: |
9512 | case R_ARM_MOVT_ABS: | |
9513 | case R_ARM_MOVW_PREL_NC: | |
9514 | case R_ARM_MOVT_PREL: | |
9515 | case R_ARM_THM_MOVW_ABS_NC: | |
9516 | case R_ARM_THM_MOVT_ABS: | |
9517 | case R_ARM_THM_MOVW_PREL_NC: | |
9518 | case R_ARM_THM_MOVT_PREL: | |
b7693d02 DJ |
9519 | /* Should the interworking branches be here also? */ |
9520 | ||
3eb128b2 | 9521 | if (h != NULL) |
eb043451 PB |
9522 | { |
9523 | struct elf32_arm_link_hash_entry *eh; | |
9524 | struct elf32_arm_relocs_copied **pp; | |
9525 | struct elf32_arm_relocs_copied *p; | |
5e681ec4 | 9526 | |
b7693d02 | 9527 | eh = (struct elf32_arm_link_hash_entry *) h; |
5e681ec4 | 9528 | |
eb043451 | 9529 | if (h->plt.refcount > 0) |
b7693d02 DJ |
9530 | { |
9531 | h->plt.refcount -= 1; | |
bd97cb95 DJ |
9532 | if (r_type == R_ARM_THM_CALL) |
9533 | eh->plt_maybe_thumb_refcount--; | |
9534 | ||
9535 | if (r_type == R_ARM_THM_JUMP24 | |
9536 | || r_type == R_ARM_THM_JUMP19) | |
b7693d02 DJ |
9537 | eh->plt_thumb_refcount--; |
9538 | } | |
5e681ec4 | 9539 | |
eb043451 | 9540 | if (r_type == R_ARM_ABS32 |
bb224fc3 MS |
9541 | || r_type == R_ARM_REL32 |
9542 | || r_type == R_ARM_ABS32_NOI | |
9543 | || r_type == R_ARM_REL32_NOI) | |
eb043451 | 9544 | { |
eb043451 PB |
9545 | for (pp = &eh->relocs_copied; (p = *pp) != NULL; |
9546 | pp = &p->next) | |
9547 | if (p->section == sec) | |
9548 | { | |
9549 | p->count -= 1; | |
bb224fc3 MS |
9550 | if (ELF32_R_TYPE (rel->r_info) == R_ARM_REL32 |
9551 | || ELF32_R_TYPE (rel->r_info) == R_ARM_REL32_NOI) | |
ba93b8ac | 9552 | p->pc_count -= 1; |
eb043451 PB |
9553 | if (p->count == 0) |
9554 | *pp = p->next; | |
9555 | break; | |
9556 | } | |
9557 | } | |
9558 | } | |
9559 | break; | |
5e681ec4 | 9560 | |
eb043451 PB |
9561 | default: |
9562 | break; | |
9563 | } | |
9564 | } | |
5e681ec4 | 9565 | |
b34976b6 | 9566 | return TRUE; |
252b5132 RH |
9567 | } |
9568 | ||
780a67af NC |
9569 | /* Look through the relocs for a section during the first phase. */ |
9570 | ||
b34976b6 | 9571 | static bfd_boolean |
57e8b36a NC |
9572 | elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info, |
9573 | asection *sec, const Elf_Internal_Rela *relocs) | |
252b5132 | 9574 | { |
b34976b6 AM |
9575 | Elf_Internal_Shdr *symtab_hdr; |
9576 | struct elf_link_hash_entry **sym_hashes; | |
b34976b6 AM |
9577 | const Elf_Internal_Rela *rel; |
9578 | const Elf_Internal_Rela *rel_end; | |
9579 | bfd *dynobj; | |
5e681ec4 | 9580 | asection *sreloc; |
b34976b6 | 9581 | bfd_vma *local_got_offsets; |
5e681ec4 | 9582 | struct elf32_arm_link_hash_table *htab; |
39623e12 | 9583 | bfd_boolean needs_plt; |
9a5aca8c | 9584 | |
1049f94e | 9585 | if (info->relocatable) |
b34976b6 | 9586 | return TRUE; |
9a5aca8c | 9587 | |
0ffa91dd NC |
9588 | BFD_ASSERT (is_arm_elf (abfd)); |
9589 | ||
5e681ec4 PB |
9590 | htab = elf32_arm_hash_table (info); |
9591 | sreloc = NULL; | |
9a5aca8c | 9592 | |
67687978 PB |
9593 | /* Create dynamic sections for relocatable executables so that we can |
9594 | copy relocations. */ | |
9595 | if (htab->root.is_relocatable_executable | |
9596 | && ! htab->root.dynamic_sections_created) | |
9597 | { | |
9598 | if (! _bfd_elf_link_create_dynamic_sections (abfd, info)) | |
9599 | return FALSE; | |
9600 | } | |
9601 | ||
252b5132 RH |
9602 | dynobj = elf_hash_table (info)->dynobj; |
9603 | local_got_offsets = elf_local_got_offsets (abfd); | |
f21f3fe0 | 9604 | |
0ffa91dd | 9605 | symtab_hdr = & elf_symtab_hdr (abfd); |
252b5132 | 9606 | sym_hashes = elf_sym_hashes (abfd); |
9b485d32 | 9607 | |
252b5132 RH |
9608 | rel_end = relocs + sec->reloc_count; |
9609 | for (rel = relocs; rel < rel_end; rel++) | |
9610 | { | |
9611 | struct elf_link_hash_entry *h; | |
b7693d02 | 9612 | struct elf32_arm_link_hash_entry *eh; |
252b5132 | 9613 | unsigned long r_symndx; |
eb043451 | 9614 | int r_type; |
9a5aca8c | 9615 | |
252b5132 | 9616 | r_symndx = ELF32_R_SYM (rel->r_info); |
eb043451 | 9617 | r_type = ELF32_R_TYPE (rel->r_info); |
eb043451 | 9618 | r_type = arm_real_reloc_type (htab, r_type); |
ba93b8ac DJ |
9619 | |
9620 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
9621 | { | |
9622 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd, | |
9623 | r_symndx); | |
9624 | return FALSE; | |
9625 | } | |
9626 | ||
252b5132 RH |
9627 | if (r_symndx < symtab_hdr->sh_info) |
9628 | h = NULL; | |
9629 | else | |
973a3492 L |
9630 | { |
9631 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
9632 | while (h->root.type == bfd_link_hash_indirect | |
9633 | || h->root.type == bfd_link_hash_warning) | |
9634 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
9635 | } | |
9a5aca8c | 9636 | |
b7693d02 DJ |
9637 | eh = (struct elf32_arm_link_hash_entry *) h; |
9638 | ||
eb043451 | 9639 | switch (r_type) |
252b5132 | 9640 | { |
5e681ec4 | 9641 | case R_ARM_GOT32: |
eb043451 | 9642 | case R_ARM_GOT_PREL: |
ba93b8ac DJ |
9643 | case R_ARM_TLS_GD32: |
9644 | case R_ARM_TLS_IE32: | |
5e681ec4 | 9645 | /* This symbol requires a global offset table entry. */ |
ba93b8ac DJ |
9646 | { |
9647 | int tls_type, old_tls_type; | |
5e681ec4 | 9648 | |
ba93b8ac DJ |
9649 | switch (r_type) |
9650 | { | |
9651 | case R_ARM_TLS_GD32: tls_type = GOT_TLS_GD; break; | |
9652 | case R_ARM_TLS_IE32: tls_type = GOT_TLS_IE; break; | |
9653 | default: tls_type = GOT_NORMAL; break; | |
9654 | } | |
252b5132 | 9655 | |
ba93b8ac DJ |
9656 | if (h != NULL) |
9657 | { | |
9658 | h->got.refcount++; | |
9659 | old_tls_type = elf32_arm_hash_entry (h)->tls_type; | |
9660 | } | |
9661 | else | |
9662 | { | |
9663 | bfd_signed_vma *local_got_refcounts; | |
9664 | ||
9665 | /* This is a global offset table entry for a local symbol. */ | |
9666 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
9667 | if (local_got_refcounts == NULL) | |
9668 | { | |
9669 | bfd_size_type size; | |
906e58ca | 9670 | |
ba93b8ac | 9671 | size = symtab_hdr->sh_info; |
906e58ca | 9672 | size *= (sizeof (bfd_signed_vma) + sizeof (char)); |
ba93b8ac DJ |
9673 | local_got_refcounts = bfd_zalloc (abfd, size); |
9674 | if (local_got_refcounts == NULL) | |
9675 | return FALSE; | |
9676 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
9677 | elf32_arm_local_got_tls_type (abfd) | |
9678 | = (char *) (local_got_refcounts + symtab_hdr->sh_info); | |
9679 | } | |
9680 | local_got_refcounts[r_symndx] += 1; | |
9681 | old_tls_type = elf32_arm_local_got_tls_type (abfd) [r_symndx]; | |
9682 | } | |
9683 | ||
9684 | /* We will already have issued an error message if there is a | |
9685 | TLS / non-TLS mismatch, based on the symbol type. We don't | |
9686 | support any linker relaxations. So just combine any TLS | |
9687 | types needed. */ | |
9688 | if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL | |
9689 | && tls_type != GOT_NORMAL) | |
9690 | tls_type |= old_tls_type; | |
9691 | ||
9692 | if (old_tls_type != tls_type) | |
9693 | { | |
9694 | if (h != NULL) | |
9695 | elf32_arm_hash_entry (h)->tls_type = tls_type; | |
9696 | else | |
9697 | elf32_arm_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
9698 | } | |
9699 | } | |
8029a119 | 9700 | /* Fall through. */ |
ba93b8ac DJ |
9701 | |
9702 | case R_ARM_TLS_LDM32: | |
9703 | if (r_type == R_ARM_TLS_LDM32) | |
9704 | htab->tls_ldm_got.refcount++; | |
8029a119 | 9705 | /* Fall through. */ |
252b5132 | 9706 | |
c19d1205 | 9707 | case R_ARM_GOTOFF32: |
5e681ec4 PB |
9708 | case R_ARM_GOTPC: |
9709 | if (htab->sgot == NULL) | |
9710 | { | |
9711 | if (htab->root.dynobj == NULL) | |
9712 | htab->root.dynobj = abfd; | |
9713 | if (!create_got_section (htab->root.dynobj, info)) | |
9714 | return FALSE; | |
9715 | } | |
252b5132 RH |
9716 | break; |
9717 | ||
00a97672 RS |
9718 | case R_ARM_ABS12: |
9719 | /* VxWorks uses dynamic R_ARM_ABS12 relocations for | |
9720 | ldr __GOTT_INDEX__ offsets. */ | |
9721 | if (!htab->vxworks_p) | |
9722 | break; | |
8029a119 | 9723 | /* Fall through. */ |
00a97672 | 9724 | |
252b5132 | 9725 | case R_ARM_PC24: |
7359ea65 | 9726 | case R_ARM_PLT32: |
5b5bb741 PB |
9727 | case R_ARM_CALL: |
9728 | case R_ARM_JUMP24: | |
eb043451 | 9729 | case R_ARM_PREL31: |
c19d1205 | 9730 | case R_ARM_THM_CALL: |
bd97cb95 DJ |
9731 | case R_ARM_THM_JUMP24: |
9732 | case R_ARM_THM_JUMP19: | |
39623e12 PB |
9733 | needs_plt = 1; |
9734 | goto normal_reloc; | |
9735 | ||
9736 | case R_ARM_ABS32: | |
9737 | case R_ARM_ABS32_NOI: | |
9738 | case R_ARM_REL32: | |
9739 | case R_ARM_REL32_NOI: | |
b6895b4f PB |
9740 | case R_ARM_MOVW_ABS_NC: |
9741 | case R_ARM_MOVT_ABS: | |
9742 | case R_ARM_MOVW_PREL_NC: | |
9743 | case R_ARM_MOVT_PREL: | |
9744 | case R_ARM_THM_MOVW_ABS_NC: | |
9745 | case R_ARM_THM_MOVT_ABS: | |
9746 | case R_ARM_THM_MOVW_PREL_NC: | |
9747 | case R_ARM_THM_MOVT_PREL: | |
39623e12 PB |
9748 | needs_plt = 0; |
9749 | normal_reloc: | |
9750 | ||
b7693d02 | 9751 | /* Should the interworking branches be listed here? */ |
7359ea65 | 9752 | if (h != NULL) |
5e681ec4 PB |
9753 | { |
9754 | /* If this reloc is in a read-only section, we might | |
9755 | need a copy reloc. We can't check reliably at this | |
9756 | stage whether the section is read-only, as input | |
9757 | sections have not yet been mapped to output sections. | |
9758 | Tentatively set the flag for now, and correct in | |
9759 | adjust_dynamic_symbol. */ | |
7359ea65 | 9760 | if (!info->shared) |
f5385ebf | 9761 | h->non_got_ref = 1; |
7359ea65 | 9762 | |
5e681ec4 | 9763 | /* We may need a .plt entry if the function this reloc |
c84cd8ee DJ |
9764 | refers to is in a different object. We can't tell for |
9765 | sure yet, because something later might force the | |
9766 | symbol local. */ | |
39623e12 | 9767 | if (needs_plt) |
f5385ebf | 9768 | h->needs_plt = 1; |
4f199be3 DJ |
9769 | |
9770 | /* If we create a PLT entry, this relocation will reference | |
9771 | it, even if it's an ABS32 relocation. */ | |
9772 | h->plt.refcount += 1; | |
b7693d02 | 9773 | |
bd97cb95 DJ |
9774 | /* It's too early to use htab->use_blx here, so we have to |
9775 | record possible blx references separately from | |
9776 | relocs that definitely need a thumb stub. */ | |
9777 | ||
c19d1205 | 9778 | if (r_type == R_ARM_THM_CALL) |
bd97cb95 DJ |
9779 | eh->plt_maybe_thumb_refcount += 1; |
9780 | ||
9781 | if (r_type == R_ARM_THM_JUMP24 | |
9782 | || r_type == R_ARM_THM_JUMP19) | |
b7693d02 | 9783 | eh->plt_thumb_refcount += 1; |
5e681ec4 PB |
9784 | } |
9785 | ||
67687978 PB |
9786 | /* If we are creating a shared library or relocatable executable, |
9787 | and this is a reloc against a global symbol, or a non PC | |
9788 | relative reloc against a local symbol, then we need to copy | |
9789 | the reloc into the shared library. However, if we are linking | |
9790 | with -Bsymbolic, we do not need to copy a reloc against a | |
252b5132 RH |
9791 | global symbol which is defined in an object we are |
9792 | including in the link (i.e., DEF_REGULAR is set). At | |
9793 | this point we have not seen all the input files, so it is | |
9794 | possible that DEF_REGULAR is not set now but will be set | |
9795 | later (it is never cleared). We account for that | |
9796 | possibility below by storing information in the | |
5e681ec4 | 9797 | relocs_copied field of the hash table entry. */ |
67687978 | 9798 | if ((info->shared || htab->root.is_relocatable_executable) |
5e681ec4 | 9799 | && (sec->flags & SEC_ALLOC) != 0 |
bb224fc3 | 9800 | && ((r_type == R_ARM_ABS32 || r_type == R_ARM_ABS32_NOI) |
71a976dd DJ |
9801 | || (h != NULL && ! h->needs_plt |
9802 | && (! info->symbolic || ! h->def_regular)))) | |
252b5132 | 9803 | { |
5e681ec4 PB |
9804 | struct elf32_arm_relocs_copied *p, **head; |
9805 | ||
252b5132 RH |
9806 | /* When creating a shared object, we must copy these |
9807 | reloc types into the output file. We create a reloc | |
9808 | section in dynobj and make room for this reloc. */ | |
83bac4b0 | 9809 | if (sreloc == NULL) |
252b5132 | 9810 | { |
83bac4b0 NC |
9811 | sreloc = _bfd_elf_make_dynamic_reloc_section |
9812 | (sec, dynobj, 2, abfd, ! htab->use_rel); | |
252b5132 | 9813 | |
83bac4b0 | 9814 | if (sreloc == NULL) |
b34976b6 | 9815 | return FALSE; |
252b5132 | 9816 | |
83bac4b0 NC |
9817 | /* BPABI objects never have dynamic relocations mapped. */ |
9818 | if (! htab->symbian_p) | |
252b5132 | 9819 | { |
83bac4b0 | 9820 | flagword flags; |
5e681ec4 | 9821 | |
83bac4b0 | 9822 | flags = bfd_get_section_flags (dynobj, sreloc); |
528aeb62 | 9823 | flags |= (SEC_LOAD | SEC_ALLOC); |
83bac4b0 NC |
9824 | bfd_set_section_flags (dynobj, sreloc, flags); |
9825 | } | |
252b5132 RH |
9826 | } |
9827 | ||
5e681ec4 PB |
9828 | /* If this is a global symbol, we count the number of |
9829 | relocations we need for this symbol. */ | |
9830 | if (h != NULL) | |
252b5132 | 9831 | { |
5e681ec4 PB |
9832 | head = &((struct elf32_arm_link_hash_entry *) h)->relocs_copied; |
9833 | } | |
9834 | else | |
9835 | { | |
9836 | /* Track dynamic relocs needed for local syms too. | |
9837 | We really need local syms available to do this | |
9838 | easily. Oh well. */ | |
57e8b36a | 9839 | |
5e681ec4 | 9840 | asection *s; |
6edfbbad DJ |
9841 | void *vpp; |
9842 | ||
5e681ec4 PB |
9843 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, |
9844 | sec, r_symndx); | |
9845 | if (s == NULL) | |
9846 | return FALSE; | |
57e8b36a | 9847 | |
6edfbbad DJ |
9848 | vpp = &elf_section_data (s)->local_dynrel; |
9849 | head = (struct elf32_arm_relocs_copied **) vpp; | |
5e681ec4 | 9850 | } |
57e8b36a | 9851 | |
5e681ec4 PB |
9852 | p = *head; |
9853 | if (p == NULL || p->section != sec) | |
9854 | { | |
9855 | bfd_size_type amt = sizeof *p; | |
57e8b36a | 9856 | |
5e681ec4 | 9857 | p = bfd_alloc (htab->root.dynobj, amt); |
252b5132 | 9858 | if (p == NULL) |
5e681ec4 PB |
9859 | return FALSE; |
9860 | p->next = *head; | |
9861 | *head = p; | |
9862 | p->section = sec; | |
9863 | p->count = 0; | |
ba93b8ac | 9864 | p->pc_count = 0; |
252b5132 | 9865 | } |
57e8b36a | 9866 | |
bb224fc3 | 9867 | if (r_type == R_ARM_REL32 || r_type == R_ARM_REL32_NOI) |
ba93b8ac | 9868 | p->pc_count += 1; |
71a976dd | 9869 | p->count += 1; |
252b5132 RH |
9870 | } |
9871 | break; | |
9872 | ||
9873 | /* This relocation describes the C++ object vtable hierarchy. | |
9874 | Reconstruct it for later use during GC. */ | |
9875 | case R_ARM_GNU_VTINHERIT: | |
c152c796 | 9876 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 9877 | return FALSE; |
252b5132 | 9878 | break; |
9a5aca8c | 9879 | |
252b5132 RH |
9880 | /* This relocation describes which C++ vtable entries are actually |
9881 | used. Record for later use during GC. */ | |
9882 | case R_ARM_GNU_VTENTRY: | |
d17e0c6e JB |
9883 | BFD_ASSERT (h != NULL); |
9884 | if (h != NULL | |
9885 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 9886 | return FALSE; |
252b5132 RH |
9887 | break; |
9888 | } | |
9889 | } | |
f21f3fe0 | 9890 | |
b34976b6 | 9891 | return TRUE; |
252b5132 RH |
9892 | } |
9893 | ||
6a5bb875 PB |
9894 | /* Unwinding tables are not referenced directly. This pass marks them as |
9895 | required if the corresponding code section is marked. */ | |
9896 | ||
9897 | static bfd_boolean | |
906e58ca NC |
9898 | elf32_arm_gc_mark_extra_sections (struct bfd_link_info *info, |
9899 | elf_gc_mark_hook_fn gc_mark_hook) | |
6a5bb875 PB |
9900 | { |
9901 | bfd *sub; | |
9902 | Elf_Internal_Shdr **elf_shdrp; | |
9903 | bfd_boolean again; | |
9904 | ||
9905 | /* Marking EH data may cause additional code sections to be marked, | |
9906 | requiring multiple passes. */ | |
9907 | again = TRUE; | |
9908 | while (again) | |
9909 | { | |
9910 | again = FALSE; | |
9911 | for (sub = info->input_bfds; sub != NULL; sub = sub->link_next) | |
9912 | { | |
9913 | asection *o; | |
9914 | ||
0ffa91dd | 9915 | if (! is_arm_elf (sub)) |
6a5bb875 PB |
9916 | continue; |
9917 | ||
9918 | elf_shdrp = elf_elfsections (sub); | |
9919 | for (o = sub->sections; o != NULL; o = o->next) | |
9920 | { | |
9921 | Elf_Internal_Shdr *hdr; | |
0ffa91dd | 9922 | |
6a5bb875 | 9923 | hdr = &elf_section_data (o)->this_hdr; |
4fbb74a6 AM |
9924 | if (hdr->sh_type == SHT_ARM_EXIDX |
9925 | && hdr->sh_link | |
9926 | && hdr->sh_link < elf_numsections (sub) | |
6a5bb875 PB |
9927 | && !o->gc_mark |
9928 | && elf_shdrp[hdr->sh_link]->bfd_section->gc_mark) | |
9929 | { | |
9930 | again = TRUE; | |
9931 | if (!_bfd_elf_gc_mark (info, o, gc_mark_hook)) | |
9932 | return FALSE; | |
9933 | } | |
9934 | } | |
9935 | } | |
9936 | } | |
9937 | ||
9938 | return TRUE; | |
9939 | } | |
9940 | ||
3c9458e9 NC |
9941 | /* Treat mapping symbols as special target symbols. */ |
9942 | ||
9943 | static bfd_boolean | |
9944 | elf32_arm_is_target_special_symbol (bfd * abfd ATTRIBUTE_UNUSED, asymbol * sym) | |
9945 | { | |
b0796911 PB |
9946 | return bfd_is_arm_special_symbol_name (sym->name, |
9947 | BFD_ARM_SPECIAL_SYM_TYPE_ANY); | |
3c9458e9 NC |
9948 | } |
9949 | ||
0367ecfb NC |
9950 | /* This is a copy of elf_find_function() from elf.c except that |
9951 | ARM mapping symbols are ignored when looking for function names | |
9952 | and STT_ARM_TFUNC is considered to a function type. */ | |
252b5132 | 9953 | |
0367ecfb NC |
9954 | static bfd_boolean |
9955 | arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED, | |
9956 | asection * section, | |
9957 | asymbol ** symbols, | |
9958 | bfd_vma offset, | |
9959 | const char ** filename_ptr, | |
9960 | const char ** functionname_ptr) | |
9961 | { | |
9962 | const char * filename = NULL; | |
9963 | asymbol * func = NULL; | |
9964 | bfd_vma low_func = 0; | |
9965 | asymbol ** p; | |
252b5132 RH |
9966 | |
9967 | for (p = symbols; *p != NULL; p++) | |
9968 | { | |
9969 | elf_symbol_type *q; | |
9970 | ||
9971 | q = (elf_symbol_type *) *p; | |
9972 | ||
252b5132 RH |
9973 | switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) |
9974 | { | |
9975 | default: | |
9976 | break; | |
9977 | case STT_FILE: | |
9978 | filename = bfd_asymbol_name (&q->symbol); | |
9979 | break; | |
252b5132 RH |
9980 | case STT_FUNC: |
9981 | case STT_ARM_TFUNC: | |
9d2da7ca | 9982 | case STT_NOTYPE: |
b0796911 | 9983 | /* Skip mapping symbols. */ |
0367ecfb | 9984 | if ((q->symbol.flags & BSF_LOCAL) |
b0796911 PB |
9985 | && bfd_is_arm_special_symbol_name (q->symbol.name, |
9986 | BFD_ARM_SPECIAL_SYM_TYPE_ANY)) | |
0367ecfb NC |
9987 | continue; |
9988 | /* Fall through. */ | |
6b40fcba | 9989 | if (bfd_get_section (&q->symbol) == section |
252b5132 RH |
9990 | && q->symbol.value >= low_func |
9991 | && q->symbol.value <= offset) | |
9992 | { | |
9993 | func = (asymbol *) q; | |
9994 | low_func = q->symbol.value; | |
9995 | } | |
9996 | break; | |
9997 | } | |
9998 | } | |
9999 | ||
10000 | if (func == NULL) | |
b34976b6 | 10001 | return FALSE; |
252b5132 | 10002 | |
0367ecfb NC |
10003 | if (filename_ptr) |
10004 | *filename_ptr = filename; | |
10005 | if (functionname_ptr) | |
10006 | *functionname_ptr = bfd_asymbol_name (func); | |
10007 | ||
10008 | return TRUE; | |
906e58ca | 10009 | } |
0367ecfb NC |
10010 | |
10011 | ||
10012 | /* Find the nearest line to a particular section and offset, for error | |
10013 | reporting. This code is a duplicate of the code in elf.c, except | |
10014 | that it uses arm_elf_find_function. */ | |
10015 | ||
10016 | static bfd_boolean | |
10017 | elf32_arm_find_nearest_line (bfd * abfd, | |
10018 | asection * section, | |
10019 | asymbol ** symbols, | |
10020 | bfd_vma offset, | |
10021 | const char ** filename_ptr, | |
10022 | const char ** functionname_ptr, | |
10023 | unsigned int * line_ptr) | |
10024 | { | |
10025 | bfd_boolean found = FALSE; | |
10026 | ||
10027 | /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */ | |
10028 | ||
10029 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, | |
10030 | filename_ptr, functionname_ptr, | |
10031 | line_ptr, 0, | |
10032 | & elf_tdata (abfd)->dwarf2_find_line_info)) | |
10033 | { | |
10034 | if (!*functionname_ptr) | |
10035 | arm_elf_find_function (abfd, section, symbols, offset, | |
10036 | *filename_ptr ? NULL : filename_ptr, | |
10037 | functionname_ptr); | |
f21f3fe0 | 10038 | |
0367ecfb NC |
10039 | return TRUE; |
10040 | } | |
10041 | ||
10042 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, | |
10043 | & found, filename_ptr, | |
10044 | functionname_ptr, line_ptr, | |
10045 | & elf_tdata (abfd)->line_info)) | |
10046 | return FALSE; | |
10047 | ||
10048 | if (found && (*functionname_ptr || *line_ptr)) | |
10049 | return TRUE; | |
10050 | ||
10051 | if (symbols == NULL) | |
10052 | return FALSE; | |
10053 | ||
10054 | if (! arm_elf_find_function (abfd, section, symbols, offset, | |
10055 | filename_ptr, functionname_ptr)) | |
10056 | return FALSE; | |
10057 | ||
10058 | *line_ptr = 0; | |
b34976b6 | 10059 | return TRUE; |
252b5132 RH |
10060 | } |
10061 | ||
4ab527b0 FF |
10062 | static bfd_boolean |
10063 | elf32_arm_find_inliner_info (bfd * abfd, | |
10064 | const char ** filename_ptr, | |
10065 | const char ** functionname_ptr, | |
10066 | unsigned int * line_ptr) | |
10067 | { | |
10068 | bfd_boolean found; | |
10069 | found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, | |
10070 | functionname_ptr, line_ptr, | |
10071 | & elf_tdata (abfd)->dwarf2_find_line_info); | |
10072 | return found; | |
10073 | } | |
10074 | ||
252b5132 RH |
10075 | /* Adjust a symbol defined by a dynamic object and referenced by a |
10076 | regular object. The current definition is in some section of the | |
10077 | dynamic object, but we're not including those sections. We have to | |
10078 | change the definition to something the rest of the link can | |
10079 | understand. */ | |
10080 | ||
b34976b6 | 10081 | static bfd_boolean |
57e8b36a NC |
10082 | elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info, |
10083 | struct elf_link_hash_entry * h) | |
252b5132 RH |
10084 | { |
10085 | bfd * dynobj; | |
10086 | asection * s; | |
b7693d02 | 10087 | struct elf32_arm_link_hash_entry * eh; |
67687978 | 10088 | struct elf32_arm_link_hash_table *globals; |
252b5132 | 10089 | |
67687978 | 10090 | globals = elf32_arm_hash_table (info); |
252b5132 RH |
10091 | dynobj = elf_hash_table (info)->dynobj; |
10092 | ||
10093 | /* Make sure we know what is going on here. */ | |
10094 | BFD_ASSERT (dynobj != NULL | |
f5385ebf | 10095 | && (h->needs_plt |
f6e332e6 | 10096 | || h->u.weakdef != NULL |
f5385ebf AM |
10097 | || (h->def_dynamic |
10098 | && h->ref_regular | |
10099 | && !h->def_regular))); | |
252b5132 | 10100 | |
b7693d02 DJ |
10101 | eh = (struct elf32_arm_link_hash_entry *) h; |
10102 | ||
252b5132 RH |
10103 | /* If this is a function, put it in the procedure linkage table. We |
10104 | will fill in the contents of the procedure linkage table later, | |
10105 | when we know the address of the .got section. */ | |
0f88be7a | 10106 | if (h->type == STT_FUNC || h->type == STT_ARM_TFUNC |
f5385ebf | 10107 | || h->needs_plt) |
252b5132 | 10108 | { |
5e681ec4 PB |
10109 | if (h->plt.refcount <= 0 |
10110 | || SYMBOL_CALLS_LOCAL (info, h) | |
10111 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
10112 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
10113 | { |
10114 | /* This case can occur if we saw a PLT32 reloc in an input | |
5e681ec4 PB |
10115 | file, but the symbol was never referred to by a dynamic |
10116 | object, or if all references were garbage collected. In | |
10117 | such a case, we don't actually need to build a procedure | |
10118 | linkage table, and we can just do a PC24 reloc instead. */ | |
10119 | h->plt.offset = (bfd_vma) -1; | |
b7693d02 | 10120 | eh->plt_thumb_refcount = 0; |
bd97cb95 | 10121 | eh->plt_maybe_thumb_refcount = 0; |
f5385ebf | 10122 | h->needs_plt = 0; |
252b5132 RH |
10123 | } |
10124 | ||
b34976b6 | 10125 | return TRUE; |
252b5132 | 10126 | } |
5e681ec4 | 10127 | else |
b7693d02 DJ |
10128 | { |
10129 | /* It's possible that we incorrectly decided a .plt reloc was | |
10130 | needed for an R_ARM_PC24 or similar reloc to a non-function sym | |
10131 | in check_relocs. We can't decide accurately between function | |
10132 | and non-function syms in check-relocs; Objects loaded later in | |
10133 | the link may change h->type. So fix it now. */ | |
10134 | h->plt.offset = (bfd_vma) -1; | |
10135 | eh->plt_thumb_refcount = 0; | |
bd97cb95 | 10136 | eh->plt_maybe_thumb_refcount = 0; |
b7693d02 | 10137 | } |
252b5132 RH |
10138 | |
10139 | /* If this is a weak symbol, and there is a real definition, the | |
10140 | processor independent code will have arranged for us to see the | |
10141 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 10142 | if (h->u.weakdef != NULL) |
252b5132 | 10143 | { |
f6e332e6 AM |
10144 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
10145 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
10146 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
10147 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
b34976b6 | 10148 | return TRUE; |
252b5132 RH |
10149 | } |
10150 | ||
ba93b8ac DJ |
10151 | /* If there are no non-GOT references, we do not need a copy |
10152 | relocation. */ | |
10153 | if (!h->non_got_ref) | |
10154 | return TRUE; | |
10155 | ||
252b5132 RH |
10156 | /* This is a reference to a symbol defined by a dynamic object which |
10157 | is not a function. */ | |
10158 | ||
10159 | /* If we are creating a shared library, we must presume that the | |
10160 | only references to the symbol are via the global offset table. | |
10161 | For such cases we need not do anything here; the relocations will | |
67687978 PB |
10162 | be handled correctly by relocate_section. Relocatable executables |
10163 | can reference data in shared objects directly, so we don't need to | |
10164 | do anything here. */ | |
10165 | if (info->shared || globals->root.is_relocatable_executable) | |
b34976b6 | 10166 | return TRUE; |
252b5132 | 10167 | |
909272ee AM |
10168 | if (h->size == 0) |
10169 | { | |
10170 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
10171 | h->root.root.string); | |
10172 | return TRUE; | |
10173 | } | |
10174 | ||
252b5132 RH |
10175 | /* We must allocate the symbol in our .dynbss section, which will |
10176 | become part of the .bss section of the executable. There will be | |
10177 | an entry for this symbol in the .dynsym section. The dynamic | |
10178 | object will contain position independent code, so all references | |
10179 | from the dynamic object to this symbol will go through the global | |
10180 | offset table. The dynamic linker will use the .dynsym entry to | |
10181 | determine the address it must put in the global offset table, so | |
10182 | both the dynamic object and the regular object will refer to the | |
10183 | same memory location for the variable. */ | |
252b5132 RH |
10184 | s = bfd_get_section_by_name (dynobj, ".dynbss"); |
10185 | BFD_ASSERT (s != NULL); | |
10186 | ||
10187 | /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to | |
10188 | copy the initial value out of the dynamic object and into the | |
10189 | runtime process image. We need to remember the offset into the | |
00a97672 | 10190 | .rel(a).bss section we are going to use. */ |
252b5132 RH |
10191 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
10192 | { | |
10193 | asection *srel; | |
10194 | ||
00a97672 | 10195 | srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (globals, ".bss")); |
252b5132 | 10196 | BFD_ASSERT (srel != NULL); |
00a97672 | 10197 | srel->size += RELOC_SIZE (globals); |
f5385ebf | 10198 | h->needs_copy = 1; |
252b5132 RH |
10199 | } |
10200 | ||
027297b7 | 10201 | return _bfd_elf_adjust_dynamic_copy (h, s); |
252b5132 RH |
10202 | } |
10203 | ||
5e681ec4 PB |
10204 | /* Allocate space in .plt, .got and associated reloc sections for |
10205 | dynamic relocs. */ | |
10206 | ||
10207 | static bfd_boolean | |
57e8b36a | 10208 | allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
5e681ec4 PB |
10209 | { |
10210 | struct bfd_link_info *info; | |
10211 | struct elf32_arm_link_hash_table *htab; | |
10212 | struct elf32_arm_link_hash_entry *eh; | |
10213 | struct elf32_arm_relocs_copied *p; | |
bd97cb95 | 10214 | bfd_signed_vma thumb_refs; |
5e681ec4 | 10215 | |
b7693d02 DJ |
10216 | eh = (struct elf32_arm_link_hash_entry *) h; |
10217 | ||
5e681ec4 PB |
10218 | if (h->root.type == bfd_link_hash_indirect) |
10219 | return TRUE; | |
10220 | ||
10221 | if (h->root.type == bfd_link_hash_warning) | |
10222 | /* When warning symbols are created, they **replace** the "real" | |
10223 | entry in the hash table, thus we never get to see the real | |
10224 | symbol in a hash traversal. So look at it now. */ | |
10225 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
10226 | ||
10227 | info = (struct bfd_link_info *) inf; | |
10228 | htab = elf32_arm_hash_table (info); | |
10229 | ||
10230 | if (htab->root.dynamic_sections_created | |
10231 | && h->plt.refcount > 0) | |
10232 | { | |
10233 | /* Make sure this symbol is output as a dynamic symbol. | |
10234 | Undefined weak syms won't yet be marked as dynamic. */ | |
10235 | if (h->dynindx == -1 | |
f5385ebf | 10236 | && !h->forced_local) |
5e681ec4 | 10237 | { |
c152c796 | 10238 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
10239 | return FALSE; |
10240 | } | |
10241 | ||
10242 | if (info->shared | |
7359ea65 | 10243 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) |
5e681ec4 PB |
10244 | { |
10245 | asection *s = htab->splt; | |
10246 | ||
10247 | /* If this is the first .plt entry, make room for the special | |
10248 | first entry. */ | |
eea6121a | 10249 | if (s->size == 0) |
e5a52504 | 10250 | s->size += htab->plt_header_size; |
5e681ec4 | 10251 | |
eea6121a | 10252 | h->plt.offset = s->size; |
5e681ec4 | 10253 | |
b7693d02 DJ |
10254 | /* If we will insert a Thumb trampoline before this PLT, leave room |
10255 | for it. */ | |
bd97cb95 DJ |
10256 | thumb_refs = eh->plt_thumb_refcount; |
10257 | if (!htab->use_blx) | |
10258 | thumb_refs += eh->plt_maybe_thumb_refcount; | |
10259 | ||
10260 | if (thumb_refs > 0) | |
b7693d02 DJ |
10261 | { |
10262 | h->plt.offset += PLT_THUMB_STUB_SIZE; | |
10263 | s->size += PLT_THUMB_STUB_SIZE; | |
10264 | } | |
10265 | ||
5e681ec4 PB |
10266 | /* If this symbol is not defined in a regular file, and we are |
10267 | not generating a shared library, then set the symbol to this | |
10268 | location in the .plt. This is required to make function | |
10269 | pointers compare as equal between the normal executable and | |
10270 | the shared library. */ | |
10271 | if (! info->shared | |
f5385ebf | 10272 | && !h->def_regular) |
5e681ec4 PB |
10273 | { |
10274 | h->root.u.def.section = s; | |
10275 | h->root.u.def.value = h->plt.offset; | |
b7693d02 DJ |
10276 | |
10277 | /* Make sure the function is not marked as Thumb, in case | |
10278 | it is the target of an ABS32 relocation, which will | |
10279 | point to the PLT entry. */ | |
10280 | if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC) | |
10281 | h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC); | |
5e681ec4 PB |
10282 | } |
10283 | ||
10284 | /* Make room for this entry. */ | |
e5a52504 | 10285 | s->size += htab->plt_entry_size; |
5e681ec4 | 10286 | |
e5a52504 | 10287 | if (!htab->symbian_p) |
b7693d02 DJ |
10288 | { |
10289 | /* We also need to make an entry in the .got.plt section, which | |
10290 | will be placed in the .got section by the linker script. */ | |
10291 | eh->plt_got_offset = htab->sgotplt->size; | |
10292 | htab->sgotplt->size += 4; | |
10293 | } | |
5e681ec4 | 10294 | |
00a97672 RS |
10295 | /* We also need to make an entry in the .rel(a).plt section. */ |
10296 | htab->srelplt->size += RELOC_SIZE (htab); | |
10297 | ||
10298 | /* VxWorks executables have a second set of relocations for | |
10299 | each PLT entry. They go in a separate relocation section, | |
10300 | which is processed by the kernel loader. */ | |
10301 | if (htab->vxworks_p && !info->shared) | |
10302 | { | |
10303 | /* There is a relocation for the initial PLT entry: | |
10304 | an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */ | |
10305 | if (h->plt.offset == htab->plt_header_size) | |
10306 | htab->srelplt2->size += RELOC_SIZE (htab); | |
10307 | ||
10308 | /* There are two extra relocations for each subsequent | |
10309 | PLT entry: an R_ARM_32 relocation for the GOT entry, | |
10310 | and an R_ARM_32 relocation for the PLT entry. */ | |
10311 | htab->srelplt2->size += RELOC_SIZE (htab) * 2; | |
10312 | } | |
5e681ec4 PB |
10313 | } |
10314 | else | |
10315 | { | |
10316 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 10317 | h->needs_plt = 0; |
5e681ec4 PB |
10318 | } |
10319 | } | |
10320 | else | |
10321 | { | |
10322 | h->plt.offset = (bfd_vma) -1; | |
f5385ebf | 10323 | h->needs_plt = 0; |
5e681ec4 PB |
10324 | } |
10325 | ||
10326 | if (h->got.refcount > 0) | |
10327 | { | |
10328 | asection *s; | |
10329 | bfd_boolean dyn; | |
ba93b8ac DJ |
10330 | int tls_type = elf32_arm_hash_entry (h)->tls_type; |
10331 | int indx; | |
5e681ec4 PB |
10332 | |
10333 | /* Make sure this symbol is output as a dynamic symbol. | |
10334 | Undefined weak syms won't yet be marked as dynamic. */ | |
10335 | if (h->dynindx == -1 | |
f5385ebf | 10336 | && !h->forced_local) |
5e681ec4 | 10337 | { |
c152c796 | 10338 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
10339 | return FALSE; |
10340 | } | |
10341 | ||
e5a52504 MM |
10342 | if (!htab->symbian_p) |
10343 | { | |
10344 | s = htab->sgot; | |
10345 | h->got.offset = s->size; | |
ba93b8ac DJ |
10346 | |
10347 | if (tls_type == GOT_UNKNOWN) | |
10348 | abort (); | |
10349 | ||
10350 | if (tls_type == GOT_NORMAL) | |
10351 | /* Non-TLS symbols need one GOT slot. */ | |
10352 | s->size += 4; | |
10353 | else | |
10354 | { | |
10355 | if (tls_type & GOT_TLS_GD) | |
10356 | /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */ | |
10357 | s->size += 8; | |
10358 | if (tls_type & GOT_TLS_IE) | |
10359 | /* R_ARM_TLS_IE32 needs one GOT slot. */ | |
10360 | s->size += 4; | |
10361 | } | |
10362 | ||
e5a52504 | 10363 | dyn = htab->root.dynamic_sections_created; |
ba93b8ac DJ |
10364 | |
10365 | indx = 0; | |
10366 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
10367 | && (!info->shared | |
10368 | || !SYMBOL_REFERENCES_LOCAL (info, h))) | |
10369 | indx = h->dynindx; | |
10370 | ||
10371 | if (tls_type != GOT_NORMAL | |
10372 | && (info->shared || indx != 0) | |
10373 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
10374 | || h->root.type != bfd_link_hash_undefweak)) | |
10375 | { | |
10376 | if (tls_type & GOT_TLS_IE) | |
00a97672 | 10377 | htab->srelgot->size += RELOC_SIZE (htab); |
ba93b8ac DJ |
10378 | |
10379 | if (tls_type & GOT_TLS_GD) | |
00a97672 | 10380 | htab->srelgot->size += RELOC_SIZE (htab); |
ba93b8ac DJ |
10381 | |
10382 | if ((tls_type & GOT_TLS_GD) && indx != 0) | |
00a97672 | 10383 | htab->srelgot->size += RELOC_SIZE (htab); |
ba93b8ac DJ |
10384 | } |
10385 | else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
10386 | || h->root.type != bfd_link_hash_undefweak) | |
10387 | && (info->shared | |
10388 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
00a97672 | 10389 | htab->srelgot->size += RELOC_SIZE (htab); |
e5a52504 | 10390 | } |
5e681ec4 PB |
10391 | } |
10392 | else | |
10393 | h->got.offset = (bfd_vma) -1; | |
10394 | ||
a4fd1a8e PB |
10395 | /* Allocate stubs for exported Thumb functions on v4t. */ |
10396 | if (!htab->use_blx && h->dynindx != -1 | |
0eaedd0e | 10397 | && h->def_regular |
a4fd1a8e PB |
10398 | && ELF_ST_TYPE (h->type) == STT_ARM_TFUNC |
10399 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
10400 | { | |
10401 | struct elf_link_hash_entry * th; | |
10402 | struct bfd_link_hash_entry * bh; | |
10403 | struct elf_link_hash_entry * myh; | |
10404 | char name[1024]; | |
10405 | asection *s; | |
10406 | bh = NULL; | |
10407 | /* Create a new symbol to regist the real location of the function. */ | |
10408 | s = h->root.u.def.section; | |
906e58ca | 10409 | sprintf (name, "__real_%s", h->root.root.string); |
a4fd1a8e PB |
10410 | _bfd_generic_link_add_one_symbol (info, s->owner, |
10411 | name, BSF_GLOBAL, s, | |
10412 | h->root.u.def.value, | |
10413 | NULL, TRUE, FALSE, &bh); | |
10414 | ||
10415 | myh = (struct elf_link_hash_entry *) bh; | |
10416 | myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC); | |
10417 | myh->forced_local = 1; | |
10418 | eh->export_glue = myh; | |
10419 | th = record_arm_to_thumb_glue (info, h); | |
10420 | /* Point the symbol at the stub. */ | |
10421 | h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC); | |
10422 | h->root.u.def.section = th->root.u.def.section; | |
10423 | h->root.u.def.value = th->root.u.def.value & ~1; | |
10424 | } | |
10425 | ||
5e681ec4 PB |
10426 | if (eh->relocs_copied == NULL) |
10427 | return TRUE; | |
10428 | ||
10429 | /* In the shared -Bsymbolic case, discard space allocated for | |
10430 | dynamic pc-relative relocs against symbols which turn out to be | |
10431 | defined in regular objects. For the normal shared case, discard | |
10432 | space for pc-relative relocs that have become local due to symbol | |
10433 | visibility changes. */ | |
10434 | ||
67687978 | 10435 | if (info->shared || htab->root.is_relocatable_executable) |
5e681ec4 | 10436 | { |
7bdca076 | 10437 | /* The only relocs that use pc_count are R_ARM_REL32 and |
bb224fc3 MS |
10438 | R_ARM_REL32_NOI, which will appear on something like |
10439 | ".long foo - .". We want calls to protected symbols to resolve | |
10440 | directly to the function rather than going via the plt. If people | |
10441 | want function pointer comparisons to work as expected then they | |
10442 | should avoid writing assembly like ".long foo - .". */ | |
ba93b8ac DJ |
10443 | if (SYMBOL_CALLS_LOCAL (info, h)) |
10444 | { | |
10445 | struct elf32_arm_relocs_copied **pp; | |
10446 | ||
10447 | for (pp = &eh->relocs_copied; (p = *pp) != NULL; ) | |
10448 | { | |
10449 | p->count -= p->pc_count; | |
10450 | p->pc_count = 0; | |
10451 | if (p->count == 0) | |
10452 | *pp = p->next; | |
10453 | else | |
10454 | pp = &p->next; | |
10455 | } | |
10456 | } | |
10457 | ||
3348747a NS |
10458 | if (elf32_arm_hash_table (info)->vxworks_p) |
10459 | { | |
10460 | struct elf32_arm_relocs_copied **pp; | |
10461 | ||
10462 | for (pp = &eh->relocs_copied; (p = *pp) != NULL; ) | |
10463 | { | |
10464 | if (strcmp (p->section->output_section->name, ".tls_vars") == 0) | |
10465 | *pp = p->next; | |
10466 | else | |
10467 | pp = &p->next; | |
10468 | } | |
10469 | } | |
10470 | ||
ba93b8ac | 10471 | /* Also discard relocs on undefined weak syms with non-default |
7359ea65 | 10472 | visibility. */ |
22d606e9 | 10473 | if (eh->relocs_copied != NULL |
5e681ec4 | 10474 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 AM |
10475 | { |
10476 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
10477 | eh->relocs_copied = NULL; | |
10478 | ||
10479 | /* Make sure undefined weak symbols are output as a dynamic | |
10480 | symbol in PIEs. */ | |
10481 | else if (h->dynindx == -1 | |
10482 | && !h->forced_local) | |
10483 | { | |
10484 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
10485 | return FALSE; | |
10486 | } | |
10487 | } | |
10488 | ||
67687978 PB |
10489 | else if (htab->root.is_relocatable_executable && h->dynindx == -1 |
10490 | && h->root.type == bfd_link_hash_new) | |
10491 | { | |
10492 | /* Output absolute symbols so that we can create relocations | |
10493 | against them. For normal symbols we output a relocation | |
10494 | against the section that contains them. */ | |
10495 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
10496 | return FALSE; | |
10497 | } | |
10498 | ||
5e681ec4 PB |
10499 | } |
10500 | else | |
10501 | { | |
10502 | /* For the non-shared case, discard space for relocs against | |
10503 | symbols which turn out to need copy relocs or are not | |
10504 | dynamic. */ | |
10505 | ||
f5385ebf AM |
10506 | if (!h->non_got_ref |
10507 | && ((h->def_dynamic | |
10508 | && !h->def_regular) | |
5e681ec4 PB |
10509 | || (htab->root.dynamic_sections_created |
10510 | && (h->root.type == bfd_link_hash_undefweak | |
10511 | || h->root.type == bfd_link_hash_undefined)))) | |
10512 | { | |
10513 | /* Make sure this symbol is output as a dynamic symbol. | |
10514 | Undefined weak syms won't yet be marked as dynamic. */ | |
10515 | if (h->dynindx == -1 | |
f5385ebf | 10516 | && !h->forced_local) |
5e681ec4 | 10517 | { |
c152c796 | 10518 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
5e681ec4 PB |
10519 | return FALSE; |
10520 | } | |
10521 | ||
10522 | /* If that succeeded, we know we'll be keeping all the | |
10523 | relocs. */ | |
10524 | if (h->dynindx != -1) | |
10525 | goto keep; | |
10526 | } | |
10527 | ||
10528 | eh->relocs_copied = NULL; | |
10529 | ||
10530 | keep: ; | |
10531 | } | |
10532 | ||
10533 | /* Finally, allocate space. */ | |
10534 | for (p = eh->relocs_copied; p != NULL; p = p->next) | |
10535 | { | |
10536 | asection *sreloc = elf_section_data (p->section)->sreloc; | |
00a97672 | 10537 | sreloc->size += p->count * RELOC_SIZE (htab); |
5e681ec4 PB |
10538 | } |
10539 | ||
10540 | return TRUE; | |
10541 | } | |
10542 | ||
08d1f311 DJ |
10543 | /* Find any dynamic relocs that apply to read-only sections. */ |
10544 | ||
10545 | static bfd_boolean | |
8029a119 | 10546 | elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry * h, void * inf) |
08d1f311 | 10547 | { |
8029a119 NC |
10548 | struct elf32_arm_link_hash_entry * eh; |
10549 | struct elf32_arm_relocs_copied * p; | |
08d1f311 DJ |
10550 | |
10551 | if (h->root.type == bfd_link_hash_warning) | |
10552 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
10553 | ||
10554 | eh = (struct elf32_arm_link_hash_entry *) h; | |
10555 | for (p = eh->relocs_copied; p != NULL; p = p->next) | |
10556 | { | |
10557 | asection *s = p->section; | |
10558 | ||
10559 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
10560 | { | |
10561 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
10562 | ||
10563 | info->flags |= DF_TEXTREL; | |
10564 | ||
10565 | /* Not an error, just cut short the traversal. */ | |
10566 | return FALSE; | |
10567 | } | |
10568 | } | |
10569 | return TRUE; | |
10570 | } | |
10571 | ||
d504ffc8 DJ |
10572 | void |
10573 | bfd_elf32_arm_set_byteswap_code (struct bfd_link_info *info, | |
10574 | int byteswap_code) | |
10575 | { | |
10576 | struct elf32_arm_link_hash_table *globals; | |
10577 | ||
10578 | globals = elf32_arm_hash_table (info); | |
10579 | globals->byteswap_code = byteswap_code; | |
10580 | } | |
10581 | ||
252b5132 RH |
10582 | /* Set the sizes of the dynamic sections. */ |
10583 | ||
b34976b6 | 10584 | static bfd_boolean |
57e8b36a NC |
10585 | elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED, |
10586 | struct bfd_link_info * info) | |
252b5132 RH |
10587 | { |
10588 | bfd * dynobj; | |
10589 | asection * s; | |
b34976b6 AM |
10590 | bfd_boolean plt; |
10591 | bfd_boolean relocs; | |
5e681ec4 PB |
10592 | bfd *ibfd; |
10593 | struct elf32_arm_link_hash_table *htab; | |
252b5132 | 10594 | |
5e681ec4 | 10595 | htab = elf32_arm_hash_table (info); |
252b5132 RH |
10596 | dynobj = elf_hash_table (info)->dynobj; |
10597 | BFD_ASSERT (dynobj != NULL); | |
39b41c9c | 10598 | check_use_blx (htab); |
252b5132 RH |
10599 | |
10600 | if (elf_hash_table (info)->dynamic_sections_created) | |
10601 | { | |
10602 | /* Set the contents of the .interp section to the interpreter. */ | |
893c4fe2 | 10603 | if (info->executable) |
252b5132 RH |
10604 | { |
10605 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
10606 | BFD_ASSERT (s != NULL); | |
eea6121a | 10607 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
252b5132 RH |
10608 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
10609 | } | |
10610 | } | |
5e681ec4 PB |
10611 | |
10612 | /* Set up .got offsets for local syms, and space for local dynamic | |
10613 | relocs. */ | |
10614 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
252b5132 | 10615 | { |
5e681ec4 PB |
10616 | bfd_signed_vma *local_got; |
10617 | bfd_signed_vma *end_local_got; | |
10618 | char *local_tls_type; | |
10619 | bfd_size_type locsymcount; | |
10620 | Elf_Internal_Shdr *symtab_hdr; | |
10621 | asection *srel; | |
3348747a | 10622 | bfd_boolean is_vxworks = elf32_arm_hash_table (info)->vxworks_p; |
5e681ec4 | 10623 | |
0ffa91dd | 10624 | if (! is_arm_elf (ibfd)) |
5e681ec4 PB |
10625 | continue; |
10626 | ||
10627 | for (s = ibfd->sections; s != NULL; s = s->next) | |
10628 | { | |
10629 | struct elf32_arm_relocs_copied *p; | |
10630 | ||
6edfbbad | 10631 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
5e681ec4 PB |
10632 | { |
10633 | if (!bfd_is_abs_section (p->section) | |
10634 | && bfd_is_abs_section (p->section->output_section)) | |
10635 | { | |
10636 | /* Input section has been discarded, either because | |
10637 | it is a copy of a linkonce section or due to | |
10638 | linker script /DISCARD/, so we'll be discarding | |
10639 | the relocs too. */ | |
10640 | } | |
3348747a NS |
10641 | else if (is_vxworks |
10642 | && strcmp (p->section->output_section->name, | |
10643 | ".tls_vars") == 0) | |
10644 | { | |
10645 | /* Relocations in vxworks .tls_vars sections are | |
10646 | handled specially by the loader. */ | |
10647 | } | |
5e681ec4 PB |
10648 | else if (p->count != 0) |
10649 | { | |
10650 | srel = elf_section_data (p->section)->sreloc; | |
00a97672 | 10651 | srel->size += p->count * RELOC_SIZE (htab); |
5e681ec4 PB |
10652 | if ((p->section->output_section->flags & SEC_READONLY) != 0) |
10653 | info->flags |= DF_TEXTREL; | |
10654 | } | |
10655 | } | |
10656 | } | |
10657 | ||
10658 | local_got = elf_local_got_refcounts (ibfd); | |
10659 | if (!local_got) | |
10660 | continue; | |
10661 | ||
0ffa91dd | 10662 | symtab_hdr = & elf_symtab_hdr (ibfd); |
5e681ec4 PB |
10663 | locsymcount = symtab_hdr->sh_info; |
10664 | end_local_got = local_got + locsymcount; | |
ba93b8ac | 10665 | local_tls_type = elf32_arm_local_got_tls_type (ibfd); |
5e681ec4 PB |
10666 | s = htab->sgot; |
10667 | srel = htab->srelgot; | |
10668 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) | |
10669 | { | |
10670 | if (*local_got > 0) | |
10671 | { | |
eea6121a | 10672 | *local_got = s->size; |
ba93b8ac DJ |
10673 | if (*local_tls_type & GOT_TLS_GD) |
10674 | /* TLS_GD relocs need an 8-byte structure in the GOT. */ | |
10675 | s->size += 8; | |
10676 | if (*local_tls_type & GOT_TLS_IE) | |
10677 | s->size += 4; | |
10678 | if (*local_tls_type == GOT_NORMAL) | |
10679 | s->size += 4; | |
10680 | ||
10681 | if (info->shared || *local_tls_type == GOT_TLS_GD) | |
00a97672 | 10682 | srel->size += RELOC_SIZE (htab); |
5e681ec4 PB |
10683 | } |
10684 | else | |
10685 | *local_got = (bfd_vma) -1; | |
10686 | } | |
252b5132 RH |
10687 | } |
10688 | ||
ba93b8ac DJ |
10689 | if (htab->tls_ldm_got.refcount > 0) |
10690 | { | |
10691 | /* Allocate two GOT entries and one dynamic relocation (if necessary) | |
10692 | for R_ARM_TLS_LDM32 relocations. */ | |
10693 | htab->tls_ldm_got.offset = htab->sgot->size; | |
10694 | htab->sgot->size += 8; | |
10695 | if (info->shared) | |
00a97672 | 10696 | htab->srelgot->size += RELOC_SIZE (htab); |
ba93b8ac DJ |
10697 | } |
10698 | else | |
10699 | htab->tls_ldm_got.offset = -1; | |
10700 | ||
5e681ec4 PB |
10701 | /* Allocate global sym .plt and .got entries, and space for global |
10702 | sym dynamic relocs. */ | |
57e8b36a | 10703 | elf_link_hash_traverse (& htab->root, allocate_dynrelocs, info); |
252b5132 | 10704 | |
d504ffc8 DJ |
10705 | /* Here we rummage through the found bfds to collect glue information. */ |
10706 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
c7b8f16e | 10707 | { |
0ffa91dd | 10708 | if (! is_arm_elf (ibfd)) |
e44a2c9c AM |
10709 | continue; |
10710 | ||
c7b8f16e JB |
10711 | /* Initialise mapping tables for code/data. */ |
10712 | bfd_elf32_arm_init_maps (ibfd); | |
906e58ca | 10713 | |
c7b8f16e JB |
10714 | if (!bfd_elf32_arm_process_before_allocation (ibfd, info) |
10715 | || !bfd_elf32_arm_vfp11_erratum_scan (ibfd, info)) | |
10716 | /* xgettext:c-format */ | |
10717 | _bfd_error_handler (_("Errors encountered processing file %s"), | |
10718 | ibfd->filename); | |
10719 | } | |
d504ffc8 | 10720 | |
252b5132 RH |
10721 | /* The check_relocs and adjust_dynamic_symbol entry points have |
10722 | determined the sizes of the various dynamic sections. Allocate | |
10723 | memory for them. */ | |
b34976b6 AM |
10724 | plt = FALSE; |
10725 | relocs = FALSE; | |
252b5132 RH |
10726 | for (s = dynobj->sections; s != NULL; s = s->next) |
10727 | { | |
10728 | const char * name; | |
252b5132 RH |
10729 | |
10730 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
10731 | continue; | |
10732 | ||
10733 | /* It's OK to base decisions on the section name, because none | |
10734 | of the dynobj section names depend upon the input files. */ | |
10735 | name = bfd_get_section_name (dynobj, s); | |
10736 | ||
24a1ba0f | 10737 | if (strcmp (name, ".plt") == 0) |
252b5132 | 10738 | { |
c456f082 AM |
10739 | /* Remember whether there is a PLT. */ |
10740 | plt = s->size != 0; | |
252b5132 | 10741 | } |
0112cd26 | 10742 | else if (CONST_STRNEQ (name, ".rel")) |
252b5132 | 10743 | { |
c456f082 | 10744 | if (s->size != 0) |
252b5132 | 10745 | { |
252b5132 | 10746 | /* Remember whether there are any reloc sections other |
00a97672 RS |
10747 | than .rel(a).plt and .rela.plt.unloaded. */ |
10748 | if (s != htab->srelplt && s != htab->srelplt2) | |
b34976b6 | 10749 | relocs = TRUE; |
252b5132 RH |
10750 | |
10751 | /* We use the reloc_count field as a counter if we need | |
10752 | to copy relocs into the output file. */ | |
10753 | s->reloc_count = 0; | |
10754 | } | |
10755 | } | |
0112cd26 | 10756 | else if (! CONST_STRNEQ (name, ".got") |
c456f082 | 10757 | && strcmp (name, ".dynbss") != 0) |
252b5132 RH |
10758 | { |
10759 | /* It's not one of our sections, so don't allocate space. */ | |
10760 | continue; | |
10761 | } | |
10762 | ||
c456f082 | 10763 | if (s->size == 0) |
252b5132 | 10764 | { |
c456f082 | 10765 | /* If we don't need this section, strip it from the |
00a97672 RS |
10766 | output file. This is mostly to handle .rel(a).bss and |
10767 | .rel(a).plt. We must create both sections in | |
c456f082 AM |
10768 | create_dynamic_sections, because they must be created |
10769 | before the linker maps input sections to output | |
10770 | sections. The linker does that before | |
10771 | adjust_dynamic_symbol is called, and it is that | |
10772 | function which decides whether anything needs to go | |
10773 | into these sections. */ | |
8423293d | 10774 | s->flags |= SEC_EXCLUDE; |
252b5132 RH |
10775 | continue; |
10776 | } | |
10777 | ||
c456f082 AM |
10778 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
10779 | continue; | |
10780 | ||
252b5132 | 10781 | /* Allocate memory for the section contents. */ |
906e58ca | 10782 | s->contents = bfd_zalloc (dynobj, s->size); |
c456f082 | 10783 | if (s->contents == NULL) |
b34976b6 | 10784 | return FALSE; |
252b5132 RH |
10785 | } |
10786 | ||
10787 | if (elf_hash_table (info)->dynamic_sections_created) | |
10788 | { | |
10789 | /* Add some entries to the .dynamic section. We fill in the | |
10790 | values later, in elf32_arm_finish_dynamic_sections, but we | |
10791 | must add the entries now so that we get the correct size for | |
10792 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
10793 | dynamic linker and used by the debugger. */ | |
dc810e39 | 10794 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 10795 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 10796 | |
8532796c | 10797 | if (info->executable) |
252b5132 | 10798 | { |
dc810e39 | 10799 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 10800 | return FALSE; |
252b5132 RH |
10801 | } |
10802 | ||
10803 | if (plt) | |
10804 | { | |
dc810e39 AM |
10805 | if ( !add_dynamic_entry (DT_PLTGOT, 0) |
10806 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
00a97672 RS |
10807 | || !add_dynamic_entry (DT_PLTREL, |
10808 | htab->use_rel ? DT_REL : DT_RELA) | |
dc810e39 | 10809 | || !add_dynamic_entry (DT_JMPREL, 0)) |
b34976b6 | 10810 | return FALSE; |
252b5132 RH |
10811 | } |
10812 | ||
10813 | if (relocs) | |
10814 | { | |
00a97672 RS |
10815 | if (htab->use_rel) |
10816 | { | |
10817 | if (!add_dynamic_entry (DT_REL, 0) | |
10818 | || !add_dynamic_entry (DT_RELSZ, 0) | |
10819 | || !add_dynamic_entry (DT_RELENT, RELOC_SIZE (htab))) | |
10820 | return FALSE; | |
10821 | } | |
10822 | else | |
10823 | { | |
10824 | if (!add_dynamic_entry (DT_RELA, 0) | |
10825 | || !add_dynamic_entry (DT_RELASZ, 0) | |
10826 | || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab))) | |
10827 | return FALSE; | |
10828 | } | |
252b5132 RH |
10829 | } |
10830 | ||
08d1f311 DJ |
10831 | /* If any dynamic relocs apply to a read-only section, |
10832 | then we need a DT_TEXTREL entry. */ | |
10833 | if ((info->flags & DF_TEXTREL) == 0) | |
8029a119 NC |
10834 | elf_link_hash_traverse (& htab->root, elf32_arm_readonly_dynrelocs, |
10835 | info); | |
08d1f311 | 10836 | |
99e4ae17 | 10837 | if ((info->flags & DF_TEXTREL) != 0) |
252b5132 | 10838 | { |
dc810e39 | 10839 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 10840 | return FALSE; |
252b5132 | 10841 | } |
7a2b07ff NS |
10842 | if (htab->vxworks_p |
10843 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) | |
10844 | return FALSE; | |
252b5132 | 10845 | } |
8532796c | 10846 | #undef add_dynamic_entry |
252b5132 | 10847 | |
b34976b6 | 10848 | return TRUE; |
252b5132 RH |
10849 | } |
10850 | ||
252b5132 RH |
10851 | /* Finish up dynamic symbol handling. We set the contents of various |
10852 | dynamic sections here. */ | |
10853 | ||
b34976b6 | 10854 | static bfd_boolean |
906e58ca NC |
10855 | elf32_arm_finish_dynamic_symbol (bfd * output_bfd, |
10856 | struct bfd_link_info * info, | |
10857 | struct elf_link_hash_entry * h, | |
10858 | Elf_Internal_Sym * sym) | |
252b5132 RH |
10859 | { |
10860 | bfd * dynobj; | |
e5a52504 | 10861 | struct elf32_arm_link_hash_table *htab; |
b7693d02 | 10862 | struct elf32_arm_link_hash_entry *eh; |
252b5132 RH |
10863 | |
10864 | dynobj = elf_hash_table (info)->dynobj; | |
e5a52504 | 10865 | htab = elf32_arm_hash_table (info); |
b7693d02 | 10866 | eh = (struct elf32_arm_link_hash_entry *) h; |
252b5132 RH |
10867 | |
10868 | if (h->plt.offset != (bfd_vma) -1) | |
10869 | { | |
10870 | asection * splt; | |
252b5132 | 10871 | asection * srel; |
e5a52504 | 10872 | bfd_byte *loc; |
24a1ba0f | 10873 | bfd_vma plt_index; |
947216bf | 10874 | Elf_Internal_Rela rel; |
252b5132 RH |
10875 | |
10876 | /* This symbol has an entry in the procedure linkage table. Set | |
10877 | it up. */ | |
10878 | ||
10879 | BFD_ASSERT (h->dynindx != -1); | |
10880 | ||
10881 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
00a97672 | 10882 | srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".plt")); |
e5a52504 | 10883 | BFD_ASSERT (splt != NULL && srel != NULL); |
252b5132 | 10884 | |
e5a52504 MM |
10885 | /* Fill in the entry in the procedure linkage table. */ |
10886 | if (htab->symbian_p) | |
10887 | { | |
906e58ca | 10888 | put_arm_insn (htab, output_bfd, |
52ab56c2 PB |
10889 | elf32_arm_symbian_plt_entry[0], |
10890 | splt->contents + h->plt.offset); | |
906e58ca | 10891 | bfd_put_32 (output_bfd, |
52ab56c2 PB |
10892 | elf32_arm_symbian_plt_entry[1], |
10893 | splt->contents + h->plt.offset + 4); | |
906e58ca | 10894 | |
e5a52504 | 10895 | /* Fill in the entry in the .rel.plt section. */ |
2a1b9a48 MM |
10896 | rel.r_offset = (splt->output_section->vma |
10897 | + splt->output_offset | |
52ab56c2 | 10898 | + h->plt.offset + 4); |
e5a52504 | 10899 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT); |
b7693d02 DJ |
10900 | |
10901 | /* Get the index in the procedure linkage table which | |
10902 | corresponds to this symbol. This is the index of this symbol | |
10903 | in all the symbols for which we are making plt entries. The | |
10904 | first entry in the procedure linkage table is reserved. */ | |
906e58ca | 10905 | plt_index = ((h->plt.offset - htab->plt_header_size) |
b7693d02 | 10906 | / htab->plt_entry_size); |
e5a52504 MM |
10907 | } |
10908 | else | |
10909 | { | |
00a97672 | 10910 | bfd_vma got_offset, got_address, plt_address; |
e5a52504 MM |
10911 | bfd_vma got_displacement; |
10912 | asection * sgot; | |
52ab56c2 | 10913 | bfd_byte * ptr; |
906e58ca | 10914 | |
e5a52504 MM |
10915 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); |
10916 | BFD_ASSERT (sgot != NULL); | |
10917 | ||
b7693d02 DJ |
10918 | /* Get the offset into the .got.plt table of the entry that |
10919 | corresponds to this function. */ | |
10920 | got_offset = eh->plt_got_offset; | |
10921 | ||
10922 | /* Get the index in the procedure linkage table which | |
10923 | corresponds to this symbol. This is the index of this symbol | |
10924 | in all the symbols for which we are making plt entries. The | |
10925 | first three entries in .got.plt are reserved; after that | |
10926 | symbols appear in the same order as in .plt. */ | |
10927 | plt_index = (got_offset - 12) / 4; | |
e5a52504 | 10928 | |
00a97672 RS |
10929 | /* Calculate the address of the GOT entry. */ |
10930 | got_address = (sgot->output_section->vma | |
10931 | + sgot->output_offset | |
10932 | + got_offset); | |
5e681ec4 | 10933 | |
00a97672 RS |
10934 | /* ...and the address of the PLT entry. */ |
10935 | plt_address = (splt->output_section->vma | |
10936 | + splt->output_offset | |
10937 | + h->plt.offset); | |
5e681ec4 | 10938 | |
52ab56c2 | 10939 | ptr = htab->splt->contents + h->plt.offset; |
00a97672 RS |
10940 | if (htab->vxworks_p && info->shared) |
10941 | { | |
10942 | unsigned int i; | |
10943 | bfd_vma val; | |
10944 | ||
52ab56c2 | 10945 | for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4) |
00a97672 RS |
10946 | { |
10947 | val = elf32_arm_vxworks_shared_plt_entry[i]; | |
10948 | if (i == 2) | |
10949 | val |= got_address - sgot->output_section->vma; | |
10950 | if (i == 5) | |
10951 | val |= plt_index * RELOC_SIZE (htab); | |
52ab56c2 PB |
10952 | if (i == 2 || i == 5) |
10953 | bfd_put_32 (output_bfd, val, ptr); | |
10954 | else | |
10955 | put_arm_insn (htab, output_bfd, val, ptr); | |
00a97672 RS |
10956 | } |
10957 | } | |
10958 | else if (htab->vxworks_p) | |
b7693d02 | 10959 | { |
00a97672 RS |
10960 | unsigned int i; |
10961 | bfd_vma val; | |
10962 | ||
d3753b85 | 10963 | for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4) |
00a97672 RS |
10964 | { |
10965 | val = elf32_arm_vxworks_exec_plt_entry[i]; | |
10966 | if (i == 2) | |
10967 | val |= got_address; | |
10968 | if (i == 4) | |
10969 | val |= 0xffffff & -((h->plt.offset + i * 4 + 8) >> 2); | |
10970 | if (i == 5) | |
10971 | val |= plt_index * RELOC_SIZE (htab); | |
52ab56c2 PB |
10972 | if (i == 2 || i == 5) |
10973 | bfd_put_32 (output_bfd, val, ptr); | |
10974 | else | |
10975 | put_arm_insn (htab, output_bfd, val, ptr); | |
00a97672 RS |
10976 | } |
10977 | ||
10978 | loc = (htab->srelplt2->contents | |
10979 | + (plt_index * 2 + 1) * RELOC_SIZE (htab)); | |
10980 | ||
10981 | /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation | |
10982 | referencing the GOT for this PLT entry. */ | |
10983 | rel.r_offset = plt_address + 8; | |
10984 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); | |
10985 | rel.r_addend = got_offset; | |
10986 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
10987 | loc += RELOC_SIZE (htab); | |
10988 | ||
10989 | /* Create the R_ARM_ABS32 relocation referencing the | |
10990 | beginning of the PLT for this GOT entry. */ | |
10991 | rel.r_offset = got_address; | |
10992 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32); | |
10993 | rel.r_addend = 0; | |
10994 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
b7693d02 | 10995 | } |
00a97672 RS |
10996 | else |
10997 | { | |
bd97cb95 | 10998 | bfd_signed_vma thumb_refs; |
00a97672 RS |
10999 | /* Calculate the displacement between the PLT slot and the |
11000 | entry in the GOT. The eight-byte offset accounts for the | |
11001 | value produced by adding to pc in the first instruction | |
11002 | of the PLT stub. */ | |
11003 | got_displacement = got_address - (plt_address + 8); | |
b7693d02 | 11004 | |
00a97672 RS |
11005 | BFD_ASSERT ((got_displacement & 0xf0000000) == 0); |
11006 | ||
bd97cb95 DJ |
11007 | thumb_refs = eh->plt_thumb_refcount; |
11008 | if (!htab->use_blx) | |
11009 | thumb_refs += eh->plt_maybe_thumb_refcount; | |
11010 | ||
11011 | if (thumb_refs > 0) | |
00a97672 | 11012 | { |
52ab56c2 PB |
11013 | put_thumb_insn (htab, output_bfd, |
11014 | elf32_arm_plt_thumb_stub[0], ptr - 4); | |
11015 | put_thumb_insn (htab, output_bfd, | |
11016 | elf32_arm_plt_thumb_stub[1], ptr - 2); | |
00a97672 RS |
11017 | } |
11018 | ||
52ab56c2 PB |
11019 | put_arm_insn (htab, output_bfd, |
11020 | elf32_arm_plt_entry[0] | |
11021 | | ((got_displacement & 0x0ff00000) >> 20), | |
11022 | ptr + 0); | |
11023 | put_arm_insn (htab, output_bfd, | |
11024 | elf32_arm_plt_entry[1] | |
11025 | | ((got_displacement & 0x000ff000) >> 12), | |
11026 | ptr+ 4); | |
11027 | put_arm_insn (htab, output_bfd, | |
11028 | elf32_arm_plt_entry[2] | |
11029 | | (got_displacement & 0x00000fff), | |
11030 | ptr + 8); | |
5e681ec4 | 11031 | #ifdef FOUR_WORD_PLT |
52ab56c2 | 11032 | bfd_put_32 (output_bfd, elf32_arm_plt_entry[3], ptr + 12); |
5e681ec4 | 11033 | #endif |
00a97672 | 11034 | } |
252b5132 | 11035 | |
e5a52504 MM |
11036 | /* Fill in the entry in the global offset table. */ |
11037 | bfd_put_32 (output_bfd, | |
11038 | (splt->output_section->vma | |
11039 | + splt->output_offset), | |
11040 | sgot->contents + got_offset); | |
906e58ca | 11041 | |
00a97672 RS |
11042 | /* Fill in the entry in the .rel(a).plt section. */ |
11043 | rel.r_addend = 0; | |
11044 | rel.r_offset = got_address; | |
e5a52504 MM |
11045 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_JUMP_SLOT); |
11046 | } | |
57e8b36a | 11047 | |
00a97672 RS |
11048 | loc = srel->contents + plt_index * RELOC_SIZE (htab); |
11049 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
252b5132 | 11050 | |
f5385ebf | 11051 | if (!h->def_regular) |
252b5132 RH |
11052 | { |
11053 | /* Mark the symbol as undefined, rather than as defined in | |
11054 | the .plt section. Leave the value alone. */ | |
11055 | sym->st_shndx = SHN_UNDEF; | |
d982ba73 PB |
11056 | /* If the symbol is weak, we do need to clear the value. |
11057 | Otherwise, the PLT entry would provide a definition for | |
11058 | the symbol even if the symbol wasn't defined anywhere, | |
11059 | and so the symbol would never be NULL. */ | |
f5385ebf | 11060 | if (!h->ref_regular_nonweak) |
d982ba73 | 11061 | sym->st_value = 0; |
252b5132 RH |
11062 | } |
11063 | } | |
11064 | ||
ba93b8ac DJ |
11065 | if (h->got.offset != (bfd_vma) -1 |
11066 | && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_GD) == 0 | |
11067 | && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_IE) == 0) | |
252b5132 RH |
11068 | { |
11069 | asection * sgot; | |
11070 | asection * srel; | |
947216bf AM |
11071 | Elf_Internal_Rela rel; |
11072 | bfd_byte *loc; | |
00a97672 | 11073 | bfd_vma offset; |
252b5132 RH |
11074 | |
11075 | /* This symbol has an entry in the global offset table. Set it | |
11076 | up. */ | |
252b5132 | 11077 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
00a97672 | 11078 | srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".got")); |
252b5132 RH |
11079 | BFD_ASSERT (sgot != NULL && srel != NULL); |
11080 | ||
00a97672 RS |
11081 | offset = (h->got.offset & ~(bfd_vma) 1); |
11082 | rel.r_addend = 0; | |
252b5132 RH |
11083 | rel.r_offset = (sgot->output_section->vma |
11084 | + sgot->output_offset | |
00a97672 | 11085 | + offset); |
252b5132 | 11086 | |
5e681ec4 PB |
11087 | /* If this is a static link, or it is a -Bsymbolic link and the |
11088 | symbol is defined locally or was forced to be local because | |
11089 | of a version file, we just want to emit a RELATIVE reloc. | |
11090 | The entry in the global offset table will already have been | |
11091 | initialized in the relocate_section function. */ | |
252b5132 | 11092 | if (info->shared |
5e681ec4 PB |
11093 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
11094 | { | |
906e58ca | 11095 | BFD_ASSERT ((h->got.offset & 1) != 0); |
5e681ec4 | 11096 | rel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); |
00a97672 RS |
11097 | if (!htab->use_rel) |
11098 | { | |
11099 | rel.r_addend = bfd_get_32 (output_bfd, sgot->contents + offset); | |
11100 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset); | |
11101 | } | |
5e681ec4 | 11102 | } |
252b5132 RH |
11103 | else |
11104 | { | |
906e58ca | 11105 | BFD_ASSERT ((h->got.offset & 1) == 0); |
00a97672 | 11106 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset); |
252b5132 RH |
11107 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT); |
11108 | } | |
11109 | ||
00a97672 RS |
11110 | loc = srel->contents + srel->reloc_count++ * RELOC_SIZE (htab); |
11111 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
252b5132 RH |
11112 | } |
11113 | ||
f5385ebf | 11114 | if (h->needs_copy) |
252b5132 RH |
11115 | { |
11116 | asection * s; | |
947216bf AM |
11117 | Elf_Internal_Rela rel; |
11118 | bfd_byte *loc; | |
252b5132 RH |
11119 | |
11120 | /* This symbol needs a copy reloc. Set it up. */ | |
252b5132 RH |
11121 | BFD_ASSERT (h->dynindx != -1 |
11122 | && (h->root.type == bfd_link_hash_defined | |
11123 | || h->root.type == bfd_link_hash_defweak)); | |
11124 | ||
11125 | s = bfd_get_section_by_name (h->root.u.def.section->owner, | |
00a97672 | 11126 | RELOC_SECTION (htab, ".bss")); |
252b5132 RH |
11127 | BFD_ASSERT (s != NULL); |
11128 | ||
00a97672 | 11129 | rel.r_addend = 0; |
252b5132 RH |
11130 | rel.r_offset = (h->root.u.def.value |
11131 | + h->root.u.def.section->output_section->vma | |
11132 | + h->root.u.def.section->output_offset); | |
11133 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY); | |
00a97672 RS |
11134 | loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab); |
11135 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); | |
252b5132 RH |
11136 | } |
11137 | ||
00a97672 RS |
11138 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks, |
11139 | the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative | |
11140 | to the ".got" section. */ | |
252b5132 | 11141 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 |
00a97672 | 11142 | || (!htab->vxworks_p && h == htab->root.hgot)) |
252b5132 RH |
11143 | sym->st_shndx = SHN_ABS; |
11144 | ||
b34976b6 | 11145 | return TRUE; |
252b5132 RH |
11146 | } |
11147 | ||
11148 | /* Finish up the dynamic sections. */ | |
11149 | ||
b34976b6 | 11150 | static bfd_boolean |
57e8b36a | 11151 | elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info) |
252b5132 RH |
11152 | { |
11153 | bfd * dynobj; | |
11154 | asection * sgot; | |
11155 | asection * sdyn; | |
11156 | ||
11157 | dynobj = elf_hash_table (info)->dynobj; | |
11158 | ||
11159 | sgot = bfd_get_section_by_name (dynobj, ".got.plt"); | |
229fcec5 | 11160 | BFD_ASSERT (elf32_arm_hash_table (info)->symbian_p || sgot != NULL); |
252b5132 RH |
11161 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
11162 | ||
11163 | if (elf_hash_table (info)->dynamic_sections_created) | |
11164 | { | |
11165 | asection *splt; | |
11166 | Elf32_External_Dyn *dyncon, *dynconend; | |
229fcec5 | 11167 | struct elf32_arm_link_hash_table *htab; |
252b5132 | 11168 | |
229fcec5 | 11169 | htab = elf32_arm_hash_table (info); |
252b5132 | 11170 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
24a1ba0f | 11171 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
252b5132 RH |
11172 | |
11173 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 11174 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
9b485d32 | 11175 | |
252b5132 RH |
11176 | for (; dyncon < dynconend; dyncon++) |
11177 | { | |
11178 | Elf_Internal_Dyn dyn; | |
11179 | const char * name; | |
11180 | asection * s; | |
11181 | ||
11182 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
11183 | ||
11184 | switch (dyn.d_tag) | |
11185 | { | |
229fcec5 MM |
11186 | unsigned int type; |
11187 | ||
252b5132 | 11188 | default: |
7a2b07ff NS |
11189 | if (htab->vxworks_p |
11190 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
11191 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
252b5132 RH |
11192 | break; |
11193 | ||
229fcec5 MM |
11194 | case DT_HASH: |
11195 | name = ".hash"; | |
11196 | goto get_vma_if_bpabi; | |
11197 | case DT_STRTAB: | |
11198 | name = ".dynstr"; | |
11199 | goto get_vma_if_bpabi; | |
11200 | case DT_SYMTAB: | |
11201 | name = ".dynsym"; | |
11202 | goto get_vma_if_bpabi; | |
c0042f5d MM |
11203 | case DT_VERSYM: |
11204 | name = ".gnu.version"; | |
11205 | goto get_vma_if_bpabi; | |
11206 | case DT_VERDEF: | |
11207 | name = ".gnu.version_d"; | |
11208 | goto get_vma_if_bpabi; | |
11209 | case DT_VERNEED: | |
11210 | name = ".gnu.version_r"; | |
11211 | goto get_vma_if_bpabi; | |
11212 | ||
252b5132 RH |
11213 | case DT_PLTGOT: |
11214 | name = ".got"; | |
11215 | goto get_vma; | |
11216 | case DT_JMPREL: | |
00a97672 | 11217 | name = RELOC_SECTION (htab, ".plt"); |
252b5132 RH |
11218 | get_vma: |
11219 | s = bfd_get_section_by_name (output_bfd, name); | |
11220 | BFD_ASSERT (s != NULL); | |
229fcec5 MM |
11221 | if (!htab->symbian_p) |
11222 | dyn.d_un.d_ptr = s->vma; | |
11223 | else | |
11224 | /* In the BPABI, tags in the PT_DYNAMIC section point | |
11225 | at the file offset, not the memory address, for the | |
11226 | convenience of the post linker. */ | |
11227 | dyn.d_un.d_ptr = s->filepos; | |
252b5132 RH |
11228 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
11229 | break; | |
11230 | ||
229fcec5 MM |
11231 | get_vma_if_bpabi: |
11232 | if (htab->symbian_p) | |
11233 | goto get_vma; | |
11234 | break; | |
11235 | ||
252b5132 | 11236 | case DT_PLTRELSZ: |
00a97672 RS |
11237 | s = bfd_get_section_by_name (output_bfd, |
11238 | RELOC_SECTION (htab, ".plt")); | |
252b5132 | 11239 | BFD_ASSERT (s != NULL); |
eea6121a | 11240 | dyn.d_un.d_val = s->size; |
252b5132 RH |
11241 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
11242 | break; | |
906e58ca | 11243 | |
252b5132 | 11244 | case DT_RELSZ: |
00a97672 | 11245 | case DT_RELASZ: |
229fcec5 MM |
11246 | if (!htab->symbian_p) |
11247 | { | |
11248 | /* My reading of the SVR4 ABI indicates that the | |
11249 | procedure linkage table relocs (DT_JMPREL) should be | |
11250 | included in the overall relocs (DT_REL). This is | |
11251 | what Solaris does. However, UnixWare can not handle | |
11252 | that case. Therefore, we override the DT_RELSZ entry | |
11253 | here to make it not include the JMPREL relocs. Since | |
00a97672 | 11254 | the linker script arranges for .rel(a).plt to follow all |
229fcec5 MM |
11255 | other relocation sections, we don't have to worry |
11256 | about changing the DT_REL entry. */ | |
00a97672 RS |
11257 | s = bfd_get_section_by_name (output_bfd, |
11258 | RELOC_SECTION (htab, ".plt")); | |
229fcec5 MM |
11259 | if (s != NULL) |
11260 | dyn.d_un.d_val -= s->size; | |
11261 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
11262 | break; | |
11263 | } | |
8029a119 | 11264 | /* Fall through. */ |
229fcec5 MM |
11265 | |
11266 | case DT_REL: | |
11267 | case DT_RELA: | |
229fcec5 MM |
11268 | /* In the BPABI, the DT_REL tag must point at the file |
11269 | offset, not the VMA, of the first relocation | |
11270 | section. So, we use code similar to that in | |
11271 | elflink.c, but do not check for SHF_ALLOC on the | |
11272 | relcoation section, since relocations sections are | |
11273 | never allocated under the BPABI. The comments above | |
11274 | about Unixware notwithstanding, we include all of the | |
11275 | relocations here. */ | |
11276 | if (htab->symbian_p) | |
11277 | { | |
11278 | unsigned int i; | |
11279 | type = ((dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ) | |
11280 | ? SHT_REL : SHT_RELA); | |
11281 | dyn.d_un.d_val = 0; | |
11282 | for (i = 1; i < elf_numsections (output_bfd); i++) | |
11283 | { | |
906e58ca | 11284 | Elf_Internal_Shdr *hdr |
229fcec5 MM |
11285 | = elf_elfsections (output_bfd)[i]; |
11286 | if (hdr->sh_type == type) | |
11287 | { | |
906e58ca | 11288 | if (dyn.d_tag == DT_RELSZ |
229fcec5 MM |
11289 | || dyn.d_tag == DT_RELASZ) |
11290 | dyn.d_un.d_val += hdr->sh_size; | |
de52dba4 AM |
11291 | else if ((ufile_ptr) hdr->sh_offset |
11292 | <= dyn.d_un.d_val - 1) | |
229fcec5 MM |
11293 | dyn.d_un.d_val = hdr->sh_offset; |
11294 | } | |
11295 | } | |
11296 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
11297 | } | |
252b5132 | 11298 | break; |
88f7bcd5 NC |
11299 | |
11300 | /* Set the bottom bit of DT_INIT/FINI if the | |
11301 | corresponding function is Thumb. */ | |
11302 | case DT_INIT: | |
11303 | name = info->init_function; | |
11304 | goto get_sym; | |
11305 | case DT_FINI: | |
11306 | name = info->fini_function; | |
11307 | get_sym: | |
11308 | /* If it wasn't set by elf_bfd_final_link | |
4cc11e76 | 11309 | then there is nothing to adjust. */ |
88f7bcd5 NC |
11310 | if (dyn.d_un.d_val != 0) |
11311 | { | |
11312 | struct elf_link_hash_entry * eh; | |
11313 | ||
11314 | eh = elf_link_hash_lookup (elf_hash_table (info), name, | |
b34976b6 | 11315 | FALSE, FALSE, TRUE); |
906e58ca | 11316 | if (eh != NULL |
88f7bcd5 NC |
11317 | && ELF_ST_TYPE (eh->type) == STT_ARM_TFUNC) |
11318 | { | |
11319 | dyn.d_un.d_val |= 1; | |
b34976b6 | 11320 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
88f7bcd5 NC |
11321 | } |
11322 | } | |
11323 | break; | |
252b5132 RH |
11324 | } |
11325 | } | |
11326 | ||
24a1ba0f | 11327 | /* Fill in the first entry in the procedure linkage table. */ |
e5a52504 | 11328 | if (splt->size > 0 && elf32_arm_hash_table (info)->plt_header_size) |
f7a74f8c | 11329 | { |
00a97672 RS |
11330 | const bfd_vma *plt0_entry; |
11331 | bfd_vma got_address, plt_address, got_displacement; | |
11332 | ||
11333 | /* Calculate the addresses of the GOT and PLT. */ | |
11334 | got_address = sgot->output_section->vma + sgot->output_offset; | |
11335 | plt_address = splt->output_section->vma + splt->output_offset; | |
11336 | ||
11337 | if (htab->vxworks_p) | |
11338 | { | |
11339 | /* The VxWorks GOT is relocated by the dynamic linker. | |
11340 | Therefore, we must emit relocations rather than simply | |
11341 | computing the values now. */ | |
11342 | Elf_Internal_Rela rel; | |
11343 | ||
11344 | plt0_entry = elf32_arm_vxworks_exec_plt0_entry; | |
52ab56c2 PB |
11345 | put_arm_insn (htab, output_bfd, plt0_entry[0], |
11346 | splt->contents + 0); | |
11347 | put_arm_insn (htab, output_bfd, plt0_entry[1], | |
11348 | splt->contents + 4); | |
11349 | put_arm_insn (htab, output_bfd, plt0_entry[2], | |
11350 | splt->contents + 8); | |
00a97672 RS |
11351 | bfd_put_32 (output_bfd, got_address, splt->contents + 12); |
11352 | ||
8029a119 | 11353 | /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */ |
00a97672 RS |
11354 | rel.r_offset = plt_address + 12; |
11355 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); | |
11356 | rel.r_addend = 0; | |
11357 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, | |
11358 | htab->srelplt2->contents); | |
11359 | } | |
11360 | else | |
11361 | { | |
11362 | got_displacement = got_address - (plt_address + 16); | |
11363 | ||
11364 | plt0_entry = elf32_arm_plt0_entry; | |
52ab56c2 PB |
11365 | put_arm_insn (htab, output_bfd, plt0_entry[0], |
11366 | splt->contents + 0); | |
11367 | put_arm_insn (htab, output_bfd, plt0_entry[1], | |
11368 | splt->contents + 4); | |
11369 | put_arm_insn (htab, output_bfd, plt0_entry[2], | |
11370 | splt->contents + 8); | |
11371 | put_arm_insn (htab, output_bfd, plt0_entry[3], | |
11372 | splt->contents + 12); | |
5e681ec4 | 11373 | |
5e681ec4 | 11374 | #ifdef FOUR_WORD_PLT |
00a97672 RS |
11375 | /* The displacement value goes in the otherwise-unused |
11376 | last word of the second entry. */ | |
11377 | bfd_put_32 (output_bfd, got_displacement, splt->contents + 28); | |
5e681ec4 | 11378 | #else |
00a97672 | 11379 | bfd_put_32 (output_bfd, got_displacement, splt->contents + 16); |
5e681ec4 | 11380 | #endif |
00a97672 | 11381 | } |
f7a74f8c | 11382 | } |
252b5132 RH |
11383 | |
11384 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
11385 | really seem like the right value. */ | |
74541ad4 AM |
11386 | if (splt->output_section->owner == output_bfd) |
11387 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; | |
00a97672 RS |
11388 | |
11389 | if (htab->vxworks_p && !info->shared && htab->splt->size > 0) | |
11390 | { | |
11391 | /* Correct the .rel(a).plt.unloaded relocations. They will have | |
11392 | incorrect symbol indexes. */ | |
11393 | int num_plts; | |
eed62c48 | 11394 | unsigned char *p; |
00a97672 RS |
11395 | |
11396 | num_plts = ((htab->splt->size - htab->plt_header_size) | |
11397 | / htab->plt_entry_size); | |
11398 | p = htab->srelplt2->contents + RELOC_SIZE (htab); | |
11399 | ||
11400 | for (; num_plts; num_plts--) | |
11401 | { | |
11402 | Elf_Internal_Rela rel; | |
11403 | ||
11404 | SWAP_RELOC_IN (htab) (output_bfd, p, &rel); | |
11405 | rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); | |
11406 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, p); | |
11407 | p += RELOC_SIZE (htab); | |
11408 | ||
11409 | SWAP_RELOC_IN (htab) (output_bfd, p, &rel); | |
11410 | rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32); | |
11411 | SWAP_RELOC_OUT (htab) (output_bfd, &rel, p); | |
11412 | p += RELOC_SIZE (htab); | |
11413 | } | |
11414 | } | |
252b5132 RH |
11415 | } |
11416 | ||
11417 | /* Fill in the first three entries in the global offset table. */ | |
229fcec5 | 11418 | if (sgot) |
252b5132 | 11419 | { |
229fcec5 MM |
11420 | if (sgot->size > 0) |
11421 | { | |
11422 | if (sdyn == NULL) | |
11423 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
11424 | else | |
11425 | bfd_put_32 (output_bfd, | |
11426 | sdyn->output_section->vma + sdyn->output_offset, | |
11427 | sgot->contents); | |
11428 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
11429 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
11430 | } | |
252b5132 | 11431 | |
229fcec5 MM |
11432 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; |
11433 | } | |
252b5132 | 11434 | |
b34976b6 | 11435 | return TRUE; |
252b5132 RH |
11436 | } |
11437 | ||
ba96a88f | 11438 | static void |
57e8b36a | 11439 | elf32_arm_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED) |
ba96a88f | 11440 | { |
9b485d32 | 11441 | Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ |
e489d0ae | 11442 | struct elf32_arm_link_hash_table *globals; |
ba96a88f NC |
11443 | |
11444 | i_ehdrp = elf_elfheader (abfd); | |
11445 | ||
94a3258f PB |
11446 | if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_UNKNOWN) |
11447 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_ARM; | |
11448 | else | |
11449 | i_ehdrp->e_ident[EI_OSABI] = 0; | |
ba96a88f | 11450 | i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION; |
e489d0ae | 11451 | |
93204d3a PB |
11452 | if (link_info) |
11453 | { | |
11454 | globals = elf32_arm_hash_table (link_info); | |
11455 | if (globals->byteswap_code) | |
11456 | i_ehdrp->e_flags |= EF_ARM_BE8; | |
11457 | } | |
ba96a88f NC |
11458 | } |
11459 | ||
99e4ae17 | 11460 | static enum elf_reloc_type_class |
57e8b36a | 11461 | elf32_arm_reloc_type_class (const Elf_Internal_Rela *rela) |
99e4ae17 | 11462 | { |
f51e552e | 11463 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
99e4ae17 AJ |
11464 | { |
11465 | case R_ARM_RELATIVE: | |
11466 | return reloc_class_relative; | |
11467 | case R_ARM_JUMP_SLOT: | |
11468 | return reloc_class_plt; | |
11469 | case R_ARM_COPY: | |
11470 | return reloc_class_copy; | |
11471 | default: | |
11472 | return reloc_class_normal; | |
11473 | } | |
11474 | } | |
11475 | ||
e16bb312 NC |
11476 | /* Set the right machine number for an Arm ELF file. */ |
11477 | ||
11478 | static bfd_boolean | |
57e8b36a | 11479 | elf32_arm_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr) |
e16bb312 NC |
11480 | { |
11481 | if (hdr->sh_type == SHT_NOTE) | |
11482 | *flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
11483 | ||
11484 | return TRUE; | |
11485 | } | |
11486 | ||
e489d0ae | 11487 | static void |
57e8b36a | 11488 | elf32_arm_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) |
e16bb312 | 11489 | { |
5a6c6817 | 11490 | bfd_arm_update_notes (abfd, ARM_NOTE_SECTION); |
e16bb312 NC |
11491 | } |
11492 | ||
40a18ebd NC |
11493 | /* Return TRUE if this is an unwinding table entry. */ |
11494 | ||
11495 | static bfd_boolean | |
11496 | is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name) | |
11497 | { | |
0112cd26 NC |
11498 | return (CONST_STRNEQ (name, ELF_STRING_ARM_unwind) |
11499 | || CONST_STRNEQ (name, ELF_STRING_ARM_unwind_once)); | |
40a18ebd NC |
11500 | } |
11501 | ||
11502 | ||
11503 | /* Set the type and flags for an ARM section. We do this by | |
11504 | the section name, which is a hack, but ought to work. */ | |
11505 | ||
11506 | static bfd_boolean | |
11507 | elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec) | |
11508 | { | |
11509 | const char * name; | |
11510 | ||
11511 | name = bfd_get_section_name (abfd, sec); | |
11512 | ||
11513 | if (is_arm_elf_unwind_section_name (abfd, name)) | |
11514 | { | |
11515 | hdr->sh_type = SHT_ARM_EXIDX; | |
11516 | hdr->sh_flags |= SHF_LINK_ORDER; | |
11517 | } | |
11518 | return TRUE; | |
11519 | } | |
11520 | ||
6dc132d9 L |
11521 | /* Handle an ARM specific section when reading an object file. This is |
11522 | called when bfd_section_from_shdr finds a section with an unknown | |
11523 | type. */ | |
40a18ebd NC |
11524 | |
11525 | static bfd_boolean | |
11526 | elf32_arm_section_from_shdr (bfd *abfd, | |
11527 | Elf_Internal_Shdr * hdr, | |
6dc132d9 L |
11528 | const char *name, |
11529 | int shindex) | |
40a18ebd NC |
11530 | { |
11531 | /* There ought to be a place to keep ELF backend specific flags, but | |
11532 | at the moment there isn't one. We just keep track of the | |
11533 | sections by their name, instead. Fortunately, the ABI gives | |
11534 | names for all the ARM specific sections, so we will probably get | |
11535 | away with this. */ | |
11536 | switch (hdr->sh_type) | |
11537 | { | |
11538 | case SHT_ARM_EXIDX: | |
0951f019 RE |
11539 | case SHT_ARM_PREEMPTMAP: |
11540 | case SHT_ARM_ATTRIBUTES: | |
40a18ebd NC |
11541 | break; |
11542 | ||
11543 | default: | |
11544 | return FALSE; | |
11545 | } | |
11546 | ||
6dc132d9 | 11547 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) |
40a18ebd NC |
11548 | return FALSE; |
11549 | ||
11550 | return TRUE; | |
11551 | } | |
e489d0ae | 11552 | |
8e3de13a NC |
11553 | /* A structure used to record a list of sections, independently |
11554 | of the next and prev fields in the asection structure. */ | |
11555 | typedef struct section_list | |
11556 | { | |
11557 | asection * sec; | |
11558 | struct section_list * next; | |
11559 | struct section_list * prev; | |
11560 | } | |
11561 | section_list; | |
11562 | ||
11563 | /* Unfortunately we need to keep a list of sections for which | |
11564 | an _arm_elf_section_data structure has been allocated. This | |
11565 | is because it is possible for functions like elf32_arm_write_section | |
11566 | to be called on a section which has had an elf_data_structure | |
11567 | allocated for it (and so the used_by_bfd field is valid) but | |
11568 | for which the ARM extended version of this structure - the | |
11569 | _arm_elf_section_data structure - has not been allocated. */ | |
11570 | static section_list * sections_with_arm_elf_section_data = NULL; | |
11571 | ||
11572 | static void | |
957c6e41 | 11573 | record_section_with_arm_elf_section_data (asection * sec) |
8e3de13a NC |
11574 | { |
11575 | struct section_list * entry; | |
11576 | ||
957c6e41 | 11577 | entry = bfd_malloc (sizeof (* entry)); |
8e3de13a NC |
11578 | if (entry == NULL) |
11579 | return; | |
11580 | entry->sec = sec; | |
11581 | entry->next = sections_with_arm_elf_section_data; | |
11582 | entry->prev = NULL; | |
11583 | if (entry->next != NULL) | |
11584 | entry->next->prev = entry; | |
11585 | sections_with_arm_elf_section_data = entry; | |
11586 | } | |
11587 | ||
44444f50 NC |
11588 | static struct section_list * |
11589 | find_arm_elf_section_entry (asection * sec) | |
8e3de13a NC |
11590 | { |
11591 | struct section_list * entry; | |
bd4aae00 | 11592 | static struct section_list * last_entry = NULL; |
8e3de13a | 11593 | |
bd4aae00 NC |
11594 | /* This is a short cut for the typical case where the sections are added |
11595 | to the sections_with_arm_elf_section_data list in forward order and | |
11596 | then looked up here in backwards order. This makes a real difference | |
11597 | to the ld-srec/sec64k.exp linker test. */ | |
44444f50 | 11598 | entry = sections_with_arm_elf_section_data; |
bd4aae00 NC |
11599 | if (last_entry != NULL) |
11600 | { | |
11601 | if (last_entry->sec == sec) | |
44444f50 NC |
11602 | entry = last_entry; |
11603 | else if (last_entry->next != NULL | |
11604 | && last_entry->next->sec == sec) | |
11605 | entry = last_entry->next; | |
bd4aae00 | 11606 | } |
44444f50 NC |
11607 | |
11608 | for (; entry; entry = entry->next) | |
8e3de13a | 11609 | if (entry->sec == sec) |
44444f50 | 11610 | break; |
bd4aae00 | 11611 | |
44444f50 NC |
11612 | if (entry) |
11613 | /* Record the entry prior to this one - it is the entry we are most | |
11614 | likely to want to locate next time. Also this way if we have been | |
11615 | called from unrecord_section_with_arm_elf_section_data() we will not | |
11616 | be caching a pointer that is about to be freed. */ | |
11617 | last_entry = entry->prev; | |
11618 | ||
11619 | return entry; | |
11620 | } | |
11621 | ||
11622 | static _arm_elf_section_data * | |
11623 | get_arm_elf_section_data (asection * sec) | |
11624 | { | |
11625 | struct section_list * entry; | |
11626 | ||
11627 | entry = find_arm_elf_section_entry (sec); | |
11628 | ||
11629 | if (entry) | |
11630 | return elf32_arm_section_data (entry->sec); | |
11631 | else | |
11632 | return NULL; | |
8e3de13a NC |
11633 | } |
11634 | ||
11635 | static void | |
11636 | unrecord_section_with_arm_elf_section_data (asection * sec) | |
11637 | { | |
11638 | struct section_list * entry; | |
11639 | ||
44444f50 NC |
11640 | entry = find_arm_elf_section_entry (sec); |
11641 | ||
11642 | if (entry) | |
11643 | { | |
11644 | if (entry->prev != NULL) | |
11645 | entry->prev->next = entry->next; | |
11646 | if (entry->next != NULL) | |
11647 | entry->next->prev = entry->prev; | |
11648 | if (entry == sections_with_arm_elf_section_data) | |
11649 | sections_with_arm_elf_section_data = entry->next; | |
11650 | free (entry); | |
11651 | } | |
8e3de13a NC |
11652 | } |
11653 | ||
e489d0ae | 11654 | |
4e617b1e PB |
11655 | typedef struct |
11656 | { | |
11657 | void *finfo; | |
11658 | struct bfd_link_info *info; | |
91a5743d PB |
11659 | asection *sec; |
11660 | int sec_shndx; | |
4e617b1e PB |
11661 | bfd_boolean (*func) (void *, const char *, Elf_Internal_Sym *, |
11662 | asection *, struct elf_link_hash_entry *); | |
11663 | } output_arch_syminfo; | |
11664 | ||
11665 | enum map_symbol_type | |
11666 | { | |
11667 | ARM_MAP_ARM, | |
11668 | ARM_MAP_THUMB, | |
11669 | ARM_MAP_DATA | |
11670 | }; | |
11671 | ||
11672 | ||
7413f23f | 11673 | /* Output a single mapping symbol. */ |
4e617b1e PB |
11674 | |
11675 | static bfd_boolean | |
7413f23f DJ |
11676 | elf32_arm_output_map_sym (output_arch_syminfo *osi, |
11677 | enum map_symbol_type type, | |
11678 | bfd_vma offset) | |
4e617b1e PB |
11679 | { |
11680 | static const char *names[3] = {"$a", "$t", "$d"}; | |
11681 | struct elf32_arm_link_hash_table *htab; | |
11682 | Elf_Internal_Sym sym; | |
11683 | ||
11684 | htab = elf32_arm_hash_table (osi->info); | |
91a5743d PB |
11685 | sym.st_value = osi->sec->output_section->vma |
11686 | + osi->sec->output_offset | |
11687 | + offset; | |
4e617b1e PB |
11688 | sym.st_size = 0; |
11689 | sym.st_other = 0; | |
11690 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE); | |
91a5743d PB |
11691 | sym.st_shndx = osi->sec_shndx; |
11692 | if (!osi->func (osi->finfo, names[type], &sym, osi->sec, NULL)) | |
4e617b1e PB |
11693 | return FALSE; |
11694 | return TRUE; | |
11695 | } | |
11696 | ||
11697 | ||
11698 | /* Output mapping symbols for PLT entries associated with H. */ | |
11699 | ||
11700 | static bfd_boolean | |
11701 | elf32_arm_output_plt_map (struct elf_link_hash_entry *h, void *inf) | |
11702 | { | |
11703 | output_arch_syminfo *osi = (output_arch_syminfo *) inf; | |
11704 | struct elf32_arm_link_hash_table *htab; | |
11705 | struct elf32_arm_link_hash_entry *eh; | |
11706 | bfd_vma addr; | |
11707 | ||
11708 | htab = elf32_arm_hash_table (osi->info); | |
11709 | ||
11710 | if (h->root.type == bfd_link_hash_indirect) | |
11711 | return TRUE; | |
11712 | ||
11713 | if (h->root.type == bfd_link_hash_warning) | |
11714 | /* When warning symbols are created, they **replace** the "real" | |
11715 | entry in the hash table, thus we never get to see the real | |
11716 | symbol in a hash traversal. So look at it now. */ | |
11717 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
11718 | ||
11719 | if (h->plt.offset == (bfd_vma) -1) | |
11720 | return TRUE; | |
11721 | ||
11722 | eh = (struct elf32_arm_link_hash_entry *) h; | |
11723 | addr = h->plt.offset; | |
11724 | if (htab->symbian_p) | |
11725 | { | |
7413f23f | 11726 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr)) |
4e617b1e | 11727 | return FALSE; |
7413f23f | 11728 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 4)) |
4e617b1e PB |
11729 | return FALSE; |
11730 | } | |
11731 | else if (htab->vxworks_p) | |
11732 | { | |
7413f23f | 11733 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr)) |
4e617b1e | 11734 | return FALSE; |
7413f23f | 11735 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 8)) |
4e617b1e | 11736 | return FALSE; |
7413f23f | 11737 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr + 12)) |
4e617b1e | 11738 | return FALSE; |
7413f23f | 11739 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 20)) |
4e617b1e PB |
11740 | return FALSE; |
11741 | } | |
11742 | else | |
11743 | { | |
bd97cb95 DJ |
11744 | bfd_signed_vma thumb_refs; |
11745 | ||
11746 | thumb_refs = eh->plt_thumb_refcount; | |
11747 | if (!htab->use_blx) | |
11748 | thumb_refs += eh->plt_maybe_thumb_refcount; | |
4e617b1e | 11749 | |
bd97cb95 | 11750 | if (thumb_refs > 0) |
4e617b1e | 11751 | { |
7413f23f | 11752 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_THUMB, addr - 4)) |
4e617b1e PB |
11753 | return FALSE; |
11754 | } | |
11755 | #ifdef FOUR_WORD_PLT | |
7413f23f | 11756 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr)) |
4e617b1e | 11757 | return FALSE; |
7413f23f | 11758 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 12)) |
4e617b1e PB |
11759 | return FALSE; |
11760 | #else | |
906e58ca | 11761 | /* A three-word PLT with no Thumb thunk contains only Arm code, |
4e617b1e PB |
11762 | so only need to output a mapping symbol for the first PLT entry and |
11763 | entries with thumb thunks. */ | |
bd97cb95 | 11764 | if (thumb_refs > 0 || addr == 20) |
4e617b1e | 11765 | { |
7413f23f | 11766 | if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr)) |
4e617b1e PB |
11767 | return FALSE; |
11768 | } | |
11769 | #endif | |
11770 | } | |
11771 | ||
11772 | return TRUE; | |
11773 | } | |
11774 | ||
7413f23f DJ |
11775 | /* Output a single local symbol for a generated stub. */ |
11776 | ||
11777 | static bfd_boolean | |
11778 | elf32_arm_output_stub_sym (output_arch_syminfo *osi, const char *name, | |
11779 | bfd_vma offset, bfd_vma size) | |
11780 | { | |
11781 | struct elf32_arm_link_hash_table *htab; | |
11782 | Elf_Internal_Sym sym; | |
11783 | ||
11784 | htab = elf32_arm_hash_table (osi->info); | |
11785 | sym.st_value = osi->sec->output_section->vma | |
11786 | + osi->sec->output_offset | |
11787 | + offset; | |
11788 | sym.st_size = size; | |
11789 | sym.st_other = 0; | |
11790 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
11791 | sym.st_shndx = osi->sec_shndx; | |
11792 | if (!osi->func (osi->finfo, name, &sym, osi->sec, NULL)) | |
11793 | return FALSE; | |
11794 | return TRUE; | |
11795 | } | |
4e617b1e | 11796 | |
da5938a2 | 11797 | static bfd_boolean |
8029a119 NC |
11798 | arm_map_one_stub (struct bfd_hash_entry * gen_entry, |
11799 | void * in_arg) | |
da5938a2 NC |
11800 | { |
11801 | struct elf32_arm_stub_hash_entry *stub_entry; | |
11802 | struct bfd_link_info *info; | |
11803 | struct elf32_arm_link_hash_table *htab; | |
11804 | asection *stub_sec; | |
11805 | bfd_vma addr; | |
7413f23f | 11806 | char *stub_name; |
9a008db3 | 11807 | output_arch_syminfo *osi; |
461a49ca DJ |
11808 | const insn_sequence *template; |
11809 | enum stub_insn_type prev_type; | |
11810 | int size; | |
11811 | int i; | |
11812 | enum map_symbol_type sym_type; | |
da5938a2 NC |
11813 | |
11814 | /* Massage our args to the form they really have. */ | |
11815 | stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry; | |
9a008db3 | 11816 | osi = (output_arch_syminfo *) in_arg; |
da5938a2 | 11817 | |
da5938a2 NC |
11818 | info = osi->info; |
11819 | ||
11820 | htab = elf32_arm_hash_table (info); | |
11821 | stub_sec = stub_entry->stub_sec; | |
11822 | ||
11823 | /* Ensure this stub is attached to the current section being | |
7413f23f | 11824 | processed. */ |
da5938a2 NC |
11825 | if (stub_sec != osi->sec) |
11826 | return TRUE; | |
11827 | ||
7413f23f DJ |
11828 | addr = (bfd_vma) stub_entry->stub_offset; |
11829 | stub_name = stub_entry->output_name; | |
da5938a2 | 11830 | |
461a49ca | 11831 | template = stub_entry->stub_template; |
4e31c731 | 11832 | switch (template[0].type) |
7413f23f | 11833 | { |
461a49ca DJ |
11834 | case ARM_TYPE: |
11835 | if (!elf32_arm_output_stub_sym (osi, stub_name, addr, stub_entry->stub_size)) | |
da5938a2 NC |
11836 | return FALSE; |
11837 | break; | |
461a49ca DJ |
11838 | case THUMB16_TYPE: |
11839 | if (!elf32_arm_output_stub_sym (osi, stub_name, addr | 1, | |
11840 | stub_entry->stub_size)) | |
da5938a2 NC |
11841 | return FALSE; |
11842 | break; | |
11843 | default: | |
11844 | BFD_FAIL (); | |
4e31c731 | 11845 | return FALSE; |
7413f23f | 11846 | } |
da5938a2 | 11847 | |
461a49ca DJ |
11848 | prev_type = DATA_TYPE; |
11849 | size = 0; | |
11850 | for (i = 0; i < stub_entry->stub_template_size; i++) | |
11851 | { | |
4e31c731 | 11852 | switch (template[i].type) |
461a49ca DJ |
11853 | { |
11854 | case ARM_TYPE: | |
11855 | sym_type = ARM_MAP_ARM; | |
11856 | break; | |
11857 | ||
11858 | case THUMB16_TYPE: | |
11859 | sym_type = ARM_MAP_THUMB; | |
11860 | break; | |
11861 | ||
11862 | case DATA_TYPE: | |
11863 | sym_type = ARM_MAP_DATA; | |
11864 | break; | |
11865 | ||
11866 | default: | |
11867 | BFD_FAIL (); | |
4e31c731 | 11868 | return FALSE; |
461a49ca DJ |
11869 | } |
11870 | ||
11871 | if (template[i].type != prev_type) | |
11872 | { | |
11873 | prev_type = template[i].type; | |
11874 | if (!elf32_arm_output_map_sym (osi, sym_type, addr + size)) | |
11875 | return FALSE; | |
11876 | } | |
11877 | ||
4e31c731 | 11878 | switch (template[i].type) |
461a49ca DJ |
11879 | { |
11880 | case ARM_TYPE: | |
11881 | size += 4; | |
11882 | break; | |
11883 | ||
11884 | case THUMB16_TYPE: | |
11885 | size += 2; | |
11886 | break; | |
11887 | ||
11888 | case DATA_TYPE: | |
11889 | size += 4; | |
11890 | break; | |
11891 | ||
11892 | default: | |
11893 | BFD_FAIL (); | |
4e31c731 | 11894 | return FALSE; |
461a49ca DJ |
11895 | } |
11896 | } | |
11897 | ||
da5938a2 NC |
11898 | return TRUE; |
11899 | } | |
11900 | ||
91a5743d | 11901 | /* Output mapping symbols for linker generated sections. */ |
4e617b1e PB |
11902 | |
11903 | static bfd_boolean | |
11904 | elf32_arm_output_arch_local_syms (bfd *output_bfd, | |
906e58ca NC |
11905 | struct bfd_link_info *info, |
11906 | void *finfo, | |
11907 | bfd_boolean (*func) (void *, const char *, | |
11908 | Elf_Internal_Sym *, | |
11909 | asection *, | |
11910 | struct elf_link_hash_entry *)) | |
4e617b1e PB |
11911 | { |
11912 | output_arch_syminfo osi; | |
11913 | struct elf32_arm_link_hash_table *htab; | |
91a5743d PB |
11914 | bfd_vma offset; |
11915 | bfd_size_type size; | |
4e617b1e PB |
11916 | |
11917 | htab = elf32_arm_hash_table (info); | |
906e58ca | 11918 | check_use_blx (htab); |
91a5743d | 11919 | |
4e617b1e PB |
11920 | osi.finfo = finfo; |
11921 | osi.info = info; | |
11922 | osi.func = func; | |
906e58ca | 11923 | |
91a5743d PB |
11924 | /* ARM->Thumb glue. */ |
11925 | if (htab->arm_glue_size > 0) | |
11926 | { | |
11927 | osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner, | |
11928 | ARM2THUMB_GLUE_SECTION_NAME); | |
11929 | ||
11930 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
11931 | (output_bfd, osi.sec->output_section); | |
11932 | if (info->shared || htab->root.is_relocatable_executable | |
11933 | || htab->pic_veneer) | |
11934 | size = ARM2THUMB_PIC_GLUE_SIZE; | |
11935 | else if (htab->use_blx) | |
11936 | size = ARM2THUMB_V5_STATIC_GLUE_SIZE; | |
11937 | else | |
11938 | size = ARM2THUMB_STATIC_GLUE_SIZE; | |
4e617b1e | 11939 | |
91a5743d PB |
11940 | for (offset = 0; offset < htab->arm_glue_size; offset += size) |
11941 | { | |
7413f23f DJ |
11942 | elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, offset); |
11943 | elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, offset + size - 4); | |
91a5743d PB |
11944 | } |
11945 | } | |
11946 | ||
11947 | /* Thumb->ARM glue. */ | |
11948 | if (htab->thumb_glue_size > 0) | |
11949 | { | |
11950 | osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner, | |
11951 | THUMB2ARM_GLUE_SECTION_NAME); | |
11952 | ||
11953 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
11954 | (output_bfd, osi.sec->output_section); | |
11955 | size = THUMB2ARM_GLUE_SIZE; | |
11956 | ||
11957 | for (offset = 0; offset < htab->thumb_glue_size; offset += size) | |
11958 | { | |
7413f23f DJ |
11959 | elf32_arm_output_map_sym (&osi, ARM_MAP_THUMB, offset); |
11960 | elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, offset + 4); | |
91a5743d PB |
11961 | } |
11962 | } | |
11963 | ||
845b51d6 PB |
11964 | /* ARMv4 BX veneers. */ |
11965 | if (htab->bx_glue_size > 0) | |
11966 | { | |
11967 | osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner, | |
11968 | ARM_BX_GLUE_SECTION_NAME); | |
11969 | ||
11970 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
11971 | (output_bfd, osi.sec->output_section); | |
11972 | ||
7413f23f | 11973 | elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0); |
845b51d6 PB |
11974 | } |
11975 | ||
8029a119 NC |
11976 | /* Long calls stubs. */ |
11977 | if (htab->stub_bfd && htab->stub_bfd->sections) | |
11978 | { | |
da5938a2 | 11979 | asection* stub_sec; |
8029a119 | 11980 | |
da5938a2 NC |
11981 | for (stub_sec = htab->stub_bfd->sections; |
11982 | stub_sec != NULL; | |
8029a119 NC |
11983 | stub_sec = stub_sec->next) |
11984 | { | |
11985 | /* Ignore non-stub sections. */ | |
11986 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
11987 | continue; | |
da5938a2 | 11988 | |
8029a119 | 11989 | osi.sec = stub_sec; |
da5938a2 | 11990 | |
8029a119 NC |
11991 | osi.sec_shndx = _bfd_elf_section_from_bfd_section |
11992 | (output_bfd, osi.sec->output_section); | |
da5938a2 | 11993 | |
8029a119 NC |
11994 | bfd_hash_traverse (&htab->stub_hash_table, arm_map_one_stub, &osi); |
11995 | } | |
11996 | } | |
da5938a2 | 11997 | |
91a5743d PB |
11998 | /* Finally, output mapping symbols for the PLT. */ |
11999 | if (!htab->splt || htab->splt->size == 0) | |
12000 | return TRUE; | |
12001 | ||
12002 | osi.sec_shndx = _bfd_elf_section_from_bfd_section (output_bfd, | |
8029a119 | 12003 | htab->splt->output_section); |
91a5743d | 12004 | osi.sec = htab->splt; |
4e617b1e PB |
12005 | /* Output mapping symbols for the plt header. SymbianOS does not have a |
12006 | plt header. */ | |
12007 | if (htab->vxworks_p) | |
12008 | { | |
12009 | /* VxWorks shared libraries have no PLT header. */ | |
12010 | if (!info->shared) | |
12011 | { | |
7413f23f | 12012 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0)) |
4e617b1e | 12013 | return FALSE; |
7413f23f | 12014 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 12)) |
4e617b1e PB |
12015 | return FALSE; |
12016 | } | |
12017 | } | |
12018 | else if (!htab->symbian_p) | |
12019 | { | |
7413f23f | 12020 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0)) |
4e617b1e PB |
12021 | return FALSE; |
12022 | #ifndef FOUR_WORD_PLT | |
7413f23f | 12023 | if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 16)) |
4e617b1e PB |
12024 | return FALSE; |
12025 | #endif | |
12026 | } | |
12027 | ||
12028 | elf_link_hash_traverse (&htab->root, elf32_arm_output_plt_map, (void *) &osi); | |
12029 | return TRUE; | |
12030 | } | |
12031 | ||
e489d0ae PB |
12032 | /* Allocate target specific section data. */ |
12033 | ||
12034 | static bfd_boolean | |
12035 | elf32_arm_new_section_hook (bfd *abfd, asection *sec) | |
12036 | { | |
f592407e AM |
12037 | if (!sec->used_by_bfd) |
12038 | { | |
12039 | _arm_elf_section_data *sdata; | |
12040 | bfd_size_type amt = sizeof (*sdata); | |
e489d0ae | 12041 | |
f592407e AM |
12042 | sdata = bfd_zalloc (abfd, amt); |
12043 | if (sdata == NULL) | |
12044 | return FALSE; | |
12045 | sec->used_by_bfd = sdata; | |
12046 | } | |
e489d0ae | 12047 | |
957c6e41 | 12048 | record_section_with_arm_elf_section_data (sec); |
8e3de13a | 12049 | |
e489d0ae PB |
12050 | return _bfd_elf_new_section_hook (abfd, sec); |
12051 | } | |
12052 | ||
12053 | ||
12054 | /* Used to order a list of mapping symbols by address. */ | |
12055 | ||
12056 | static int | |
12057 | elf32_arm_compare_mapping (const void * a, const void * b) | |
12058 | { | |
7f6a71ff JM |
12059 | const elf32_arm_section_map *amap = (const elf32_arm_section_map *) a; |
12060 | const elf32_arm_section_map *bmap = (const elf32_arm_section_map *) b; | |
12061 | ||
12062 | if (amap->vma > bmap->vma) | |
12063 | return 1; | |
12064 | else if (amap->vma < bmap->vma) | |
12065 | return -1; | |
12066 | else if (amap->type > bmap->type) | |
12067 | /* Ensure results do not depend on the host qsort for objects with | |
12068 | multiple mapping symbols at the same address by sorting on type | |
12069 | after vma. */ | |
12070 | return 1; | |
12071 | else if (amap->type < bmap->type) | |
12072 | return -1; | |
12073 | else | |
12074 | return 0; | |
e489d0ae PB |
12075 | } |
12076 | ||
12077 | ||
12078 | /* Do code byteswapping. Return FALSE afterwards so that the section is | |
12079 | written out as normal. */ | |
12080 | ||
12081 | static bfd_boolean | |
c7b8f16e | 12082 | elf32_arm_write_section (bfd *output_bfd, |
8029a119 NC |
12083 | struct bfd_link_info *link_info, |
12084 | asection *sec, | |
e489d0ae PB |
12085 | bfd_byte *contents) |
12086 | { | |
c7b8f16e | 12087 | int mapcount, errcount; |
8e3de13a | 12088 | _arm_elf_section_data *arm_data; |
c7b8f16e | 12089 | struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info); |
e489d0ae | 12090 | elf32_arm_section_map *map; |
c7b8f16e | 12091 | elf32_vfp11_erratum_list *errnode; |
e489d0ae PB |
12092 | bfd_vma ptr; |
12093 | bfd_vma end; | |
c7b8f16e | 12094 | bfd_vma offset = sec->output_section->vma + sec->output_offset; |
e489d0ae PB |
12095 | bfd_byte tmp; |
12096 | int i; | |
57e8b36a | 12097 | |
8e3de13a NC |
12098 | /* If this section has not been allocated an _arm_elf_section_data |
12099 | structure then we cannot record anything. */ | |
12100 | arm_data = get_arm_elf_section_data (sec); | |
12101 | if (arm_data == NULL) | |
12102 | return FALSE; | |
12103 | ||
12104 | mapcount = arm_data->mapcount; | |
12105 | map = arm_data->map; | |
c7b8f16e JB |
12106 | errcount = arm_data->erratumcount; |
12107 | ||
12108 | if (errcount != 0) | |
12109 | { | |
12110 | unsigned int endianflip = bfd_big_endian (output_bfd) ? 3 : 0; | |
12111 | ||
12112 | for (errnode = arm_data->erratumlist; errnode != 0; | |
12113 | errnode = errnode->next) | |
12114 | { | |
12115 | bfd_vma index = errnode->vma - offset; | |
12116 | ||
12117 | switch (errnode->type) | |
12118 | { | |
12119 | case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER: | |
12120 | { | |
12121 | bfd_vma branch_to_veneer; | |
12122 | /* Original condition code of instruction, plus bit mask for | |
12123 | ARM B instruction. */ | |
12124 | unsigned int insn = (errnode->u.b.vfp_insn & 0xf0000000) | |
12125 | | 0x0a000000; | |
12126 | ||
12127 | /* The instruction is before the label. */ | |
12128 | index -= 4; | |
12129 | ||
12130 | /* Above offset included in -4 below. */ | |
12131 | branch_to_veneer = errnode->u.b.veneer->vma | |
12132 | - errnode->vma - 4; | |
12133 | ||
12134 | if ((signed) branch_to_veneer < -(1 << 25) | |
12135 | || (signed) branch_to_veneer >= (1 << 25)) | |
12136 | (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of " | |
12137 | "range"), output_bfd); | |
12138 | ||
12139 | insn |= (branch_to_veneer >> 2) & 0xffffff; | |
12140 | contents[endianflip ^ index] = insn & 0xff; | |
12141 | contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff; | |
12142 | contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff; | |
12143 | contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff; | |
12144 | } | |
12145 | break; | |
12146 | ||
12147 | case VFP11_ERRATUM_ARM_VENEER: | |
12148 | { | |
12149 | bfd_vma branch_from_veneer; | |
12150 | unsigned int insn; | |
12151 | ||
12152 | /* Take size of veneer into account. */ | |
12153 | branch_from_veneer = errnode->u.v.branch->vma | |
12154 | - errnode->vma - 12; | |
12155 | ||
12156 | if ((signed) branch_from_veneer < -(1 << 25) | |
12157 | || (signed) branch_from_veneer >= (1 << 25)) | |
12158 | (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of " | |
12159 | "range"), output_bfd); | |
12160 | ||
12161 | /* Original instruction. */ | |
12162 | insn = errnode->u.v.branch->u.b.vfp_insn; | |
12163 | contents[endianflip ^ index] = insn & 0xff; | |
12164 | contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff; | |
12165 | contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff; | |
12166 | contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff; | |
12167 | ||
12168 | /* Branch back to insn after original insn. */ | |
12169 | insn = 0xea000000 | ((branch_from_veneer >> 2) & 0xffffff); | |
12170 | contents[endianflip ^ (index + 4)] = insn & 0xff; | |
12171 | contents[endianflip ^ (index + 5)] = (insn >> 8) & 0xff; | |
12172 | contents[endianflip ^ (index + 6)] = (insn >> 16) & 0xff; | |
12173 | contents[endianflip ^ (index + 7)] = (insn >> 24) & 0xff; | |
12174 | } | |
12175 | break; | |
12176 | ||
12177 | default: | |
12178 | abort (); | |
12179 | } | |
12180 | } | |
12181 | } | |
e489d0ae PB |
12182 | |
12183 | if (mapcount == 0) | |
12184 | return FALSE; | |
12185 | ||
c7b8f16e | 12186 | if (globals->byteswap_code) |
e489d0ae | 12187 | { |
c7b8f16e | 12188 | qsort (map, mapcount, sizeof (* map), elf32_arm_compare_mapping); |
57e8b36a | 12189 | |
c7b8f16e JB |
12190 | ptr = map[0].vma; |
12191 | for (i = 0; i < mapcount; i++) | |
12192 | { | |
12193 | if (i == mapcount - 1) | |
12194 | end = sec->size; | |
12195 | else | |
12196 | end = map[i + 1].vma; | |
e489d0ae | 12197 | |
c7b8f16e | 12198 | switch (map[i].type) |
e489d0ae | 12199 | { |
c7b8f16e JB |
12200 | case 'a': |
12201 | /* Byte swap code words. */ | |
12202 | while (ptr + 3 < end) | |
12203 | { | |
12204 | tmp = contents[ptr]; | |
12205 | contents[ptr] = contents[ptr + 3]; | |
12206 | contents[ptr + 3] = tmp; | |
12207 | tmp = contents[ptr + 1]; | |
12208 | contents[ptr + 1] = contents[ptr + 2]; | |
12209 | contents[ptr + 2] = tmp; | |
12210 | ptr += 4; | |
12211 | } | |
12212 | break; | |
e489d0ae | 12213 | |
c7b8f16e JB |
12214 | case 't': |
12215 | /* Byte swap code halfwords. */ | |
12216 | while (ptr + 1 < end) | |
12217 | { | |
12218 | tmp = contents[ptr]; | |
12219 | contents[ptr] = contents[ptr + 1]; | |
12220 | contents[ptr + 1] = tmp; | |
12221 | ptr += 2; | |
12222 | } | |
12223 | break; | |
12224 | ||
12225 | case 'd': | |
12226 | /* Leave data alone. */ | |
12227 | break; | |
12228 | } | |
12229 | ptr = end; | |
12230 | } | |
e489d0ae | 12231 | } |
8e3de13a | 12232 | |
93204d3a | 12233 | free (map); |
8e3de13a | 12234 | arm_data->mapcount = 0; |
c7b8f16e | 12235 | arm_data->mapsize = 0; |
8e3de13a NC |
12236 | arm_data->map = NULL; |
12237 | unrecord_section_with_arm_elf_section_data (sec); | |
12238 | ||
e489d0ae PB |
12239 | return FALSE; |
12240 | } | |
12241 | ||
957c6e41 NC |
12242 | static void |
12243 | unrecord_section_via_map_over_sections (bfd * abfd ATTRIBUTE_UNUSED, | |
12244 | asection * sec, | |
12245 | void * ignore ATTRIBUTE_UNUSED) | |
12246 | { | |
12247 | unrecord_section_with_arm_elf_section_data (sec); | |
12248 | } | |
12249 | ||
12250 | static bfd_boolean | |
12251 | elf32_arm_close_and_cleanup (bfd * abfd) | |
12252 | { | |
b25e3d87 L |
12253 | if (abfd->sections) |
12254 | bfd_map_over_sections (abfd, | |
12255 | unrecord_section_via_map_over_sections, | |
12256 | NULL); | |
957c6e41 NC |
12257 | |
12258 | return _bfd_elf_close_and_cleanup (abfd); | |
12259 | } | |
12260 | ||
b25e3d87 L |
12261 | static bfd_boolean |
12262 | elf32_arm_bfd_free_cached_info (bfd * abfd) | |
12263 | { | |
12264 | if (abfd->sections) | |
12265 | bfd_map_over_sections (abfd, | |
12266 | unrecord_section_via_map_over_sections, | |
12267 | NULL); | |
12268 | ||
12269 | return _bfd_free_cached_info (abfd); | |
12270 | } | |
12271 | ||
b7693d02 DJ |
12272 | /* Display STT_ARM_TFUNC symbols as functions. */ |
12273 | ||
12274 | static void | |
12275 | elf32_arm_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, | |
12276 | asymbol *asym) | |
12277 | { | |
12278 | elf_symbol_type *elfsym = (elf_symbol_type *) asym; | |
12279 | ||
12280 | if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_ARM_TFUNC) | |
12281 | elfsym->symbol.flags |= BSF_FUNCTION; | |
12282 | } | |
12283 | ||
0beaef2b PB |
12284 | |
12285 | /* Mangle thumb function symbols as we read them in. */ | |
12286 | ||
8384fb8f | 12287 | static bfd_boolean |
0beaef2b PB |
12288 | elf32_arm_swap_symbol_in (bfd * abfd, |
12289 | const void *psrc, | |
12290 | const void *pshn, | |
12291 | Elf_Internal_Sym *dst) | |
12292 | { | |
8384fb8f AM |
12293 | if (!bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst)) |
12294 | return FALSE; | |
0beaef2b PB |
12295 | |
12296 | /* New EABI objects mark thumb function symbols by setting the low bit of | |
12297 | the address. Turn these into STT_ARM_TFUNC. */ | |
0f88be7a | 12298 | if ((ELF_ST_TYPE (dst->st_info) == STT_FUNC) |
0beaef2b PB |
12299 | && (dst->st_value & 1)) |
12300 | { | |
12301 | dst->st_info = ELF_ST_INFO (ELF_ST_BIND (dst->st_info), STT_ARM_TFUNC); | |
12302 | dst->st_value &= ~(bfd_vma) 1; | |
12303 | } | |
8384fb8f | 12304 | return TRUE; |
0beaef2b PB |
12305 | } |
12306 | ||
12307 | ||
12308 | /* Mangle thumb function symbols as we write them out. */ | |
12309 | ||
12310 | static void | |
12311 | elf32_arm_swap_symbol_out (bfd *abfd, | |
12312 | const Elf_Internal_Sym *src, | |
12313 | void *cdst, | |
12314 | void *shndx) | |
12315 | { | |
12316 | Elf_Internal_Sym newsym; | |
12317 | ||
12318 | /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit | |
12319 | of the address set, as per the new EABI. We do this unconditionally | |
12320 | because objcopy does not set the elf header flags until after | |
12321 | it writes out the symbol table. */ | |
12322 | if (ELF_ST_TYPE (src->st_info) == STT_ARM_TFUNC) | |
12323 | { | |
12324 | newsym = *src; | |
12325 | newsym.st_info = ELF_ST_INFO (ELF_ST_BIND (src->st_info), STT_FUNC); | |
0fa3dcad PB |
12326 | if (newsym.st_shndx != SHN_UNDEF) |
12327 | { | |
12328 | /* Do this only for defined symbols. At link type, the static | |
12329 | linker will simulate the work of dynamic linker of resolving | |
12330 | symbols and will carry over the thumbness of found symbols to | |
12331 | the output symbol table. It's not clear how it happens, but | |
b0fead2b | 12332 | the thumbness of undefined symbols can well be different at |
0fa3dcad PB |
12333 | runtime, and writing '1' for them will be confusing for users |
12334 | and possibly for dynamic linker itself. | |
12335 | */ | |
12336 | newsym.st_value |= 1; | |
12337 | } | |
906e58ca | 12338 | |
0beaef2b PB |
12339 | src = &newsym; |
12340 | } | |
12341 | bfd_elf32_swap_symbol_out (abfd, src, cdst, shndx); | |
12342 | } | |
12343 | ||
b294bdf8 MM |
12344 | /* Add the PT_ARM_EXIDX program header. */ |
12345 | ||
12346 | static bfd_boolean | |
906e58ca | 12347 | elf32_arm_modify_segment_map (bfd *abfd, |
b294bdf8 MM |
12348 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
12349 | { | |
12350 | struct elf_segment_map *m; | |
12351 | asection *sec; | |
12352 | ||
12353 | sec = bfd_get_section_by_name (abfd, ".ARM.exidx"); | |
12354 | if (sec != NULL && (sec->flags & SEC_LOAD) != 0) | |
12355 | { | |
12356 | /* If there is already a PT_ARM_EXIDX header, then we do not | |
12357 | want to add another one. This situation arises when running | |
12358 | "strip"; the input binary already has the header. */ | |
12359 | m = elf_tdata (abfd)->segment_map; | |
12360 | while (m && m->p_type != PT_ARM_EXIDX) | |
12361 | m = m->next; | |
12362 | if (!m) | |
12363 | { | |
12364 | m = bfd_zalloc (abfd, sizeof (struct elf_segment_map)); | |
12365 | if (m == NULL) | |
12366 | return FALSE; | |
12367 | m->p_type = PT_ARM_EXIDX; | |
12368 | m->count = 1; | |
12369 | m->sections[0] = sec; | |
12370 | ||
12371 | m->next = elf_tdata (abfd)->segment_map; | |
12372 | elf_tdata (abfd)->segment_map = m; | |
12373 | } | |
12374 | } | |
12375 | ||
12376 | return TRUE; | |
12377 | } | |
12378 | ||
12379 | /* We may add a PT_ARM_EXIDX program header. */ | |
12380 | ||
12381 | static int | |
a6b96beb AM |
12382 | elf32_arm_additional_program_headers (bfd *abfd, |
12383 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
b294bdf8 MM |
12384 | { |
12385 | asection *sec; | |
12386 | ||
12387 | sec = bfd_get_section_by_name (abfd, ".ARM.exidx"); | |
12388 | if (sec != NULL && (sec->flags & SEC_LOAD) != 0) | |
12389 | return 1; | |
12390 | else | |
12391 | return 0; | |
12392 | } | |
12393 | ||
fcb93ecf | 12394 | /* We have two function types: STT_FUNC and STT_ARM_TFUNC. */ |
906e58ca | 12395 | |
fcb93ecf PB |
12396 | static bfd_boolean |
12397 | elf32_arm_is_function_type (unsigned int type) | |
12398 | { | |
0f88be7a | 12399 | return (type == STT_FUNC) || (type == STT_ARM_TFUNC); |
fcb93ecf PB |
12400 | } |
12401 | ||
0beaef2b | 12402 | /* We use this to override swap_symbol_in and swap_symbol_out. */ |
906e58ca NC |
12403 | const struct elf_size_info elf32_arm_size_info = |
12404 | { | |
0beaef2b PB |
12405 | sizeof (Elf32_External_Ehdr), |
12406 | sizeof (Elf32_External_Phdr), | |
12407 | sizeof (Elf32_External_Shdr), | |
12408 | sizeof (Elf32_External_Rel), | |
12409 | sizeof (Elf32_External_Rela), | |
12410 | sizeof (Elf32_External_Sym), | |
12411 | sizeof (Elf32_External_Dyn), | |
12412 | sizeof (Elf_External_Note), | |
12413 | 4, | |
12414 | 1, | |
12415 | 32, 2, | |
12416 | ELFCLASS32, EV_CURRENT, | |
12417 | bfd_elf32_write_out_phdrs, | |
12418 | bfd_elf32_write_shdrs_and_ehdr, | |
1489a3a0 | 12419 | bfd_elf32_checksum_contents, |
0beaef2b PB |
12420 | bfd_elf32_write_relocs, |
12421 | elf32_arm_swap_symbol_in, | |
12422 | elf32_arm_swap_symbol_out, | |
12423 | bfd_elf32_slurp_reloc_table, | |
12424 | bfd_elf32_slurp_symbol_table, | |
12425 | bfd_elf32_swap_dyn_in, | |
12426 | bfd_elf32_swap_dyn_out, | |
12427 | bfd_elf32_swap_reloc_in, | |
12428 | bfd_elf32_swap_reloc_out, | |
12429 | bfd_elf32_swap_reloca_in, | |
12430 | bfd_elf32_swap_reloca_out | |
12431 | }; | |
12432 | ||
252b5132 RH |
12433 | #define ELF_ARCH bfd_arch_arm |
12434 | #define ELF_MACHINE_CODE EM_ARM | |
d0facd1b NC |
12435 | #ifdef __QNXTARGET__ |
12436 | #define ELF_MAXPAGESIZE 0x1000 | |
12437 | #else | |
f21f3fe0 | 12438 | #define ELF_MAXPAGESIZE 0x8000 |
d0facd1b | 12439 | #endif |
b1342370 | 12440 | #define ELF_MINPAGESIZE 0x1000 |
24718e3b | 12441 | #define ELF_COMMONPAGESIZE 0x1000 |
252b5132 | 12442 | |
ba93b8ac DJ |
12443 | #define bfd_elf32_mkobject elf32_arm_mkobject |
12444 | ||
99e4ae17 AJ |
12445 | #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data |
12446 | #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data | |
252b5132 RH |
12447 | #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags |
12448 | #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data | |
12449 | #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create | |
906e58ca | 12450 | #define bfd_elf32_bfd_link_hash_table_free elf32_arm_hash_table_free |
dc810e39 | 12451 | #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup |
157090f7 | 12452 | #define bfd_elf32_bfd_reloc_name_lookup elf32_arm_reloc_name_lookup |
252b5132 | 12453 | #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line |
4ab527b0 | 12454 | #define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info |
e489d0ae | 12455 | #define bfd_elf32_new_section_hook elf32_arm_new_section_hook |
3c9458e9 | 12456 | #define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol |
957c6e41 | 12457 | #define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup |
b25e3d87 | 12458 | #define bfd_elf32_bfd_free_cached_info elf32_arm_bfd_free_cached_info |
252b5132 RH |
12459 | |
12460 | #define elf_backend_get_symbol_type elf32_arm_get_symbol_type | |
12461 | #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook | |
6a5bb875 | 12462 | #define elf_backend_gc_mark_extra_sections elf32_arm_gc_mark_extra_sections |
252b5132 RH |
12463 | #define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook |
12464 | #define elf_backend_check_relocs elf32_arm_check_relocs | |
dc810e39 | 12465 | #define elf_backend_relocate_section elf32_arm_relocate_section |
e489d0ae | 12466 | #define elf_backend_write_section elf32_arm_write_section |
252b5132 | 12467 | #define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol |
5e681ec4 | 12468 | #define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections |
252b5132 RH |
12469 | #define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol |
12470 | #define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections | |
12471 | #define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections | |
74541ad4 | 12472 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
ba96a88f | 12473 | #define elf_backend_post_process_headers elf32_arm_post_process_headers |
99e4ae17 | 12474 | #define elf_backend_reloc_type_class elf32_arm_reloc_type_class |
c178919b | 12475 | #define elf_backend_object_p elf32_arm_object_p |
e16bb312 | 12476 | #define elf_backend_section_flags elf32_arm_section_flags |
40a18ebd NC |
12477 | #define elf_backend_fake_sections elf32_arm_fake_sections |
12478 | #define elf_backend_section_from_shdr elf32_arm_section_from_shdr | |
e16bb312 | 12479 | #define elf_backend_final_write_processing elf32_arm_final_write_processing |
5e681ec4 | 12480 | #define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol |
b7693d02 | 12481 | #define elf_backend_symbol_processing elf32_arm_symbol_processing |
0beaef2b | 12482 | #define elf_backend_size_info elf32_arm_size_info |
b294bdf8 | 12483 | #define elf_backend_modify_segment_map elf32_arm_modify_segment_map |
906e58ca NC |
12484 | #define elf_backend_additional_program_headers elf32_arm_additional_program_headers |
12485 | #define elf_backend_output_arch_local_syms elf32_arm_output_arch_local_syms | |
12486 | #define elf_backend_begin_write_processing elf32_arm_begin_write_processing | |
12487 | #define elf_backend_is_function_type elf32_arm_is_function_type | |
12488 | ||
12489 | #define elf_backend_can_refcount 1 | |
12490 | #define elf_backend_can_gc_sections 1 | |
12491 | #define elf_backend_plt_readonly 1 | |
12492 | #define elf_backend_want_got_plt 1 | |
12493 | #define elf_backend_want_plt_sym 0 | |
12494 | #define elf_backend_may_use_rel_p 1 | |
12495 | #define elf_backend_may_use_rela_p 0 | |
4e7fd91e | 12496 | #define elf_backend_default_use_rela_p 0 |
252b5132 | 12497 | |
04f7c78d | 12498 | #define elf_backend_got_header_size 12 |
04f7c78d | 12499 | |
906e58ca NC |
12500 | #undef elf_backend_obj_attrs_vendor |
12501 | #define elf_backend_obj_attrs_vendor "aeabi" | |
12502 | #undef elf_backend_obj_attrs_section | |
12503 | #define elf_backend_obj_attrs_section ".ARM.attributes" | |
12504 | #undef elf_backend_obj_attrs_arg_type | |
12505 | #define elf_backend_obj_attrs_arg_type elf32_arm_obj_attrs_arg_type | |
12506 | #undef elf_backend_obj_attrs_section_type | |
104d59d1 | 12507 | #define elf_backend_obj_attrs_section_type SHT_ARM_ATTRIBUTES |
5aa6ff7c | 12508 | #define elf_backend_obj_attrs_order elf32_arm_obj_attrs_order |
104d59d1 | 12509 | |
252b5132 | 12510 | #include "elf32-target.h" |
7f266840 | 12511 | |
906e58ca | 12512 | /* VxWorks Targets. */ |
4e7fd91e | 12513 | |
906e58ca | 12514 | #undef TARGET_LITTLE_SYM |
4e7fd91e | 12515 | #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec |
906e58ca | 12516 | #undef TARGET_LITTLE_NAME |
4e7fd91e | 12517 | #define TARGET_LITTLE_NAME "elf32-littlearm-vxworks" |
906e58ca | 12518 | #undef TARGET_BIG_SYM |
4e7fd91e | 12519 | #define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec |
906e58ca | 12520 | #undef TARGET_BIG_NAME |
4e7fd91e PB |
12521 | #define TARGET_BIG_NAME "elf32-bigarm-vxworks" |
12522 | ||
12523 | /* Like elf32_arm_link_hash_table_create -- but overrides | |
12524 | appropriately for VxWorks. */ | |
906e58ca | 12525 | |
4e7fd91e PB |
12526 | static struct bfd_link_hash_table * |
12527 | elf32_arm_vxworks_link_hash_table_create (bfd *abfd) | |
12528 | { | |
12529 | struct bfd_link_hash_table *ret; | |
12530 | ||
12531 | ret = elf32_arm_link_hash_table_create (abfd); | |
12532 | if (ret) | |
12533 | { | |
12534 | struct elf32_arm_link_hash_table *htab | |
00a97672 | 12535 | = (struct elf32_arm_link_hash_table *) ret; |
4e7fd91e | 12536 | htab->use_rel = 0; |
00a97672 | 12537 | htab->vxworks_p = 1; |
4e7fd91e PB |
12538 | } |
12539 | return ret; | |
906e58ca | 12540 | } |
4e7fd91e | 12541 | |
00a97672 RS |
12542 | static void |
12543 | elf32_arm_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker) | |
12544 | { | |
12545 | elf32_arm_final_write_processing (abfd, linker); | |
12546 | elf_vxworks_final_write_processing (abfd, linker); | |
12547 | } | |
12548 | ||
906e58ca | 12549 | #undef elf32_bed |
4e7fd91e PB |
12550 | #define elf32_bed elf32_arm_vxworks_bed |
12551 | ||
906e58ca NC |
12552 | #undef bfd_elf32_bfd_link_hash_table_create |
12553 | #define bfd_elf32_bfd_link_hash_table_create elf32_arm_vxworks_link_hash_table_create | |
12554 | #undef elf_backend_add_symbol_hook | |
12555 | #define elf_backend_add_symbol_hook elf_vxworks_add_symbol_hook | |
12556 | #undef elf_backend_final_write_processing | |
12557 | #define elf_backend_final_write_processing elf32_arm_vxworks_final_write_processing | |
12558 | #undef elf_backend_emit_relocs | |
12559 | #define elf_backend_emit_relocs elf_vxworks_emit_relocs | |
4e7fd91e | 12560 | |
906e58ca | 12561 | #undef elf_backend_may_use_rel_p |
00a97672 | 12562 | #define elf_backend_may_use_rel_p 0 |
906e58ca | 12563 | #undef elf_backend_may_use_rela_p |
00a97672 | 12564 | #define elf_backend_may_use_rela_p 1 |
906e58ca | 12565 | #undef elf_backend_default_use_rela_p |
00a97672 | 12566 | #define elf_backend_default_use_rela_p 1 |
906e58ca | 12567 | #undef elf_backend_want_plt_sym |
00a97672 | 12568 | #define elf_backend_want_plt_sym 1 |
906e58ca | 12569 | #undef ELF_MAXPAGESIZE |
00a97672 | 12570 | #define ELF_MAXPAGESIZE 0x1000 |
4e7fd91e PB |
12571 | |
12572 | #include "elf32-target.h" | |
12573 | ||
12574 | ||
906e58ca | 12575 | /* Symbian OS Targets. */ |
7f266840 | 12576 | |
906e58ca | 12577 | #undef TARGET_LITTLE_SYM |
7f266840 | 12578 | #define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec |
906e58ca | 12579 | #undef TARGET_LITTLE_NAME |
7f266840 | 12580 | #define TARGET_LITTLE_NAME "elf32-littlearm-symbian" |
906e58ca | 12581 | #undef TARGET_BIG_SYM |
7f266840 | 12582 | #define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec |
906e58ca | 12583 | #undef TARGET_BIG_NAME |
7f266840 DJ |
12584 | #define TARGET_BIG_NAME "elf32-bigarm-symbian" |
12585 | ||
12586 | /* Like elf32_arm_link_hash_table_create -- but overrides | |
12587 | appropriately for Symbian OS. */ | |
906e58ca | 12588 | |
7f266840 DJ |
12589 | static struct bfd_link_hash_table * |
12590 | elf32_arm_symbian_link_hash_table_create (bfd *abfd) | |
12591 | { | |
12592 | struct bfd_link_hash_table *ret; | |
12593 | ||
12594 | ret = elf32_arm_link_hash_table_create (abfd); | |
12595 | if (ret) | |
12596 | { | |
12597 | struct elf32_arm_link_hash_table *htab | |
12598 | = (struct elf32_arm_link_hash_table *)ret; | |
12599 | /* There is no PLT header for Symbian OS. */ | |
12600 | htab->plt_header_size = 0; | |
95720a86 DJ |
12601 | /* The PLT entries are each one instruction and one word. */ |
12602 | htab->plt_entry_size = 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry); | |
7f266840 | 12603 | htab->symbian_p = 1; |
33bfe774 JB |
12604 | /* Symbian uses armv5t or above, so use_blx is always true. */ |
12605 | htab->use_blx = 1; | |
67687978 | 12606 | htab->root.is_relocatable_executable = 1; |
7f266840 DJ |
12607 | } |
12608 | return ret; | |
906e58ca | 12609 | } |
7f266840 | 12610 | |
b35d266b | 12611 | static const struct bfd_elf_special_section |
551b43fd | 12612 | elf32_arm_symbian_special_sections[] = |
7f266840 | 12613 | { |
5cd3778d MM |
12614 | /* In a BPABI executable, the dynamic linking sections do not go in |
12615 | the loadable read-only segment. The post-linker may wish to | |
12616 | refer to these sections, but they are not part of the final | |
12617 | program image. */ | |
0112cd26 NC |
12618 | { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, 0 }, |
12619 | { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, 0 }, | |
12620 | { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, 0 }, | |
12621 | { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, 0 }, | |
12622 | { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, 0 }, | |
5cd3778d MM |
12623 | /* These sections do not need to be writable as the SymbianOS |
12624 | postlinker will arrange things so that no dynamic relocation is | |
12625 | required. */ | |
0112cd26 NC |
12626 | { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC }, |
12627 | { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC }, | |
12628 | { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC }, | |
12629 | { NULL, 0, 0, 0, 0 } | |
7f266840 DJ |
12630 | }; |
12631 | ||
c3c76620 | 12632 | static void |
906e58ca | 12633 | elf32_arm_symbian_begin_write_processing (bfd *abfd, |
a4fd1a8e | 12634 | struct bfd_link_info *link_info) |
c3c76620 MM |
12635 | { |
12636 | /* BPABI objects are never loaded directly by an OS kernel; they are | |
12637 | processed by a postlinker first, into an OS-specific format. If | |
12638 | the D_PAGED bit is set on the file, BFD will align segments on | |
12639 | page boundaries, so that an OS can directly map the file. With | |
12640 | BPABI objects, that just results in wasted space. In addition, | |
12641 | because we clear the D_PAGED bit, map_sections_to_segments will | |
12642 | recognize that the program headers should not be mapped into any | |
12643 | loadable segment. */ | |
12644 | abfd->flags &= ~D_PAGED; | |
906e58ca | 12645 | elf32_arm_begin_write_processing (abfd, link_info); |
c3c76620 | 12646 | } |
7f266840 DJ |
12647 | |
12648 | static bfd_boolean | |
906e58ca | 12649 | elf32_arm_symbian_modify_segment_map (bfd *abfd, |
b294bdf8 | 12650 | struct bfd_link_info *info) |
7f266840 DJ |
12651 | { |
12652 | struct elf_segment_map *m; | |
12653 | asection *dynsec; | |
12654 | ||
7f266840 DJ |
12655 | /* BPABI shared libraries and executables should have a PT_DYNAMIC |
12656 | segment. However, because the .dynamic section is not marked | |
12657 | with SEC_LOAD, the generic ELF code will not create such a | |
12658 | segment. */ | |
12659 | dynsec = bfd_get_section_by_name (abfd, ".dynamic"); | |
12660 | if (dynsec) | |
12661 | { | |
8ded5a0f AM |
12662 | for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next) |
12663 | if (m->p_type == PT_DYNAMIC) | |
12664 | break; | |
12665 | ||
12666 | if (m == NULL) | |
12667 | { | |
12668 | m = _bfd_elf_make_dynamic_segment (abfd, dynsec); | |
12669 | m->next = elf_tdata (abfd)->segment_map; | |
12670 | elf_tdata (abfd)->segment_map = m; | |
12671 | } | |
7f266840 DJ |
12672 | } |
12673 | ||
b294bdf8 MM |
12674 | /* Also call the generic arm routine. */ |
12675 | return elf32_arm_modify_segment_map (abfd, info); | |
7f266840 DJ |
12676 | } |
12677 | ||
95720a86 DJ |
12678 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
12679 | or (bfd_vma) -1 if it should not be included. */ | |
12680 | ||
12681 | static bfd_vma | |
12682 | elf32_arm_symbian_plt_sym_val (bfd_vma i, const asection *plt, | |
12683 | const arelent *rel ATTRIBUTE_UNUSED) | |
12684 | { | |
12685 | return plt->vma + 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry) * i; | |
12686 | } | |
12687 | ||
12688 | ||
8029a119 | 12689 | #undef elf32_bed |
7f266840 DJ |
12690 | #define elf32_bed elf32_arm_symbian_bed |
12691 | ||
12692 | /* The dynamic sections are not allocated on SymbianOS; the postlinker | |
12693 | will process them and then discard them. */ | |
906e58ca | 12694 | #undef ELF_DYNAMIC_SEC_FLAGS |
7f266840 DJ |
12695 | #define ELF_DYNAMIC_SEC_FLAGS \ |
12696 | (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED) | |
12697 | ||
00a97672 | 12698 | #undef elf_backend_add_symbol_hook |
00a97672 | 12699 | #undef elf_backend_emit_relocs |
c3c76620 | 12700 | |
906e58ca NC |
12701 | #undef bfd_elf32_bfd_link_hash_table_create |
12702 | #define bfd_elf32_bfd_link_hash_table_create elf32_arm_symbian_link_hash_table_create | |
12703 | #undef elf_backend_special_sections | |
12704 | #define elf_backend_special_sections elf32_arm_symbian_special_sections | |
12705 | #undef elf_backend_begin_write_processing | |
12706 | #define elf_backend_begin_write_processing elf32_arm_symbian_begin_write_processing | |
12707 | #undef elf_backend_final_write_processing | |
12708 | #define elf_backend_final_write_processing elf32_arm_final_write_processing | |
12709 | ||
12710 | #undef elf_backend_modify_segment_map | |
7f266840 DJ |
12711 | #define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map |
12712 | ||
12713 | /* There is no .got section for BPABI objects, and hence no header. */ | |
906e58ca | 12714 | #undef elf_backend_got_header_size |
7f266840 DJ |
12715 | #define elf_backend_got_header_size 0 |
12716 | ||
12717 | /* Similarly, there is no .got.plt section. */ | |
906e58ca | 12718 | #undef elf_backend_want_got_plt |
7f266840 DJ |
12719 | #define elf_backend_want_got_plt 0 |
12720 | ||
906e58ca | 12721 | #undef elf_backend_plt_sym_val |
95720a86 DJ |
12722 | #define elf_backend_plt_sym_val elf32_arm_symbian_plt_sym_val |
12723 | ||
906e58ca | 12724 | #undef elf_backend_may_use_rel_p |
00a97672 | 12725 | #define elf_backend_may_use_rel_p 1 |
906e58ca | 12726 | #undef elf_backend_may_use_rela_p |
00a97672 | 12727 | #define elf_backend_may_use_rela_p 0 |
906e58ca | 12728 | #undef elf_backend_default_use_rela_p |
00a97672 | 12729 | #define elf_backend_default_use_rela_p 0 |
906e58ca | 12730 | #undef elf_backend_want_plt_sym |
00a97672 | 12731 | #define elf_backend_want_plt_sym 0 |
906e58ca | 12732 | #undef ELF_MAXPAGESIZE |
00a97672 | 12733 | #define ELF_MAXPAGESIZE 0x8000 |
4e7fd91e | 12734 | |
7f266840 | 12735 | #include "elf32-target.h" |