/src/binutils-gdb/bfd/elf32-frv.c
Line | Count | Source (jump to first uncovered line) |
1 | | /* FRV-specific support for 32-bit ELF. |
2 | | Copyright (C) 2002-2025 Free Software Foundation, Inc. |
3 | | |
4 | | This file is part of BFD, the Binary File Descriptor library. |
5 | | |
6 | | This program is free software; you can redistribute it and/or modify |
7 | | it under the terms of the GNU General Public License as published by |
8 | | the Free Software Foundation; either version 3 of the License, or |
9 | | (at your option) any later version. |
10 | | |
11 | | This program is distributed in the hope that it will be useful, |
12 | | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | | GNU General Public License for more details. |
15 | | |
16 | | You should have received a copy of the GNU General Public License |
17 | | along with this program; if not, write to the Free Software |
18 | | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
19 | | MA 02110-1301, USA. */ |
20 | | |
21 | | #include "sysdep.h" |
22 | | #include "bfd.h" |
23 | | #include "libbfd.h" |
24 | | #include "elf-bfd.h" |
25 | | #include "elf/frv.h" |
26 | | #include "dwarf2.h" |
27 | | #include "hashtab.h" |
28 | | #include "libiberty.h" |
29 | | |
30 | | /* Forward declarations. */ |
31 | | |
32 | | |
33 | | static reloc_howto_type elf32_frv_howto_table [] = |
34 | | { |
35 | | /* This reloc does nothing. */ |
36 | | HOWTO (R_FRV_NONE, /* type */ |
37 | | 0, /* rightshift */ |
38 | | 0, /* size */ |
39 | | 0, /* bitsize */ |
40 | | false, /* pc_relative */ |
41 | | 0, /* bitpos */ |
42 | | complain_overflow_dont, /* complain_on_overflow */ |
43 | | bfd_elf_generic_reloc, /* special_function */ |
44 | | "R_FRV_NONE", /* name */ |
45 | | false, /* partial_inplace */ |
46 | | 0, /* src_mask */ |
47 | | 0, /* dst_mask */ |
48 | | false), /* pcrel_offset */ |
49 | | |
50 | | /* A 32 bit absolute relocation. */ |
51 | | HOWTO (R_FRV_32, /* type */ |
52 | | 0, /* rightshift */ |
53 | | 4, /* size */ |
54 | | 32, /* bitsize */ |
55 | | false, /* pc_relative */ |
56 | | 0, /* bitpos */ |
57 | | complain_overflow_bitfield, /* complain_on_overflow */ |
58 | | bfd_elf_generic_reloc, /* special_function */ |
59 | | "R_FRV_32", /* name */ |
60 | | false, /* partial_inplace */ |
61 | | 0xffffffff, /* src_mask */ |
62 | | 0xffffffff, /* dst_mask */ |
63 | | false), /* pcrel_offset */ |
64 | | |
65 | | /* A 16 bit pc-relative relocation. */ |
66 | | HOWTO (R_FRV_LABEL16, /* type */ |
67 | | 2, /* rightshift */ |
68 | | 4, /* size */ |
69 | | 16, /* bitsize */ |
70 | | true, /* pc_relative */ |
71 | | 0, /* bitpos */ |
72 | | complain_overflow_signed, /* complain_on_overflow */ |
73 | | bfd_elf_generic_reloc, /* special_function */ |
74 | | "R_FRV_LABEL16", /* name */ |
75 | | false, /* partial_inplace */ |
76 | | 0xffff, /* src_mask */ |
77 | | 0xffff, /* dst_mask */ |
78 | | true), /* pcrel_offset */ |
79 | | |
80 | | /* A 24-bit pc-relative relocation. */ |
81 | | HOWTO (R_FRV_LABEL24, /* type */ |
82 | | 2, /* rightshift */ |
83 | | 4, /* size */ |
84 | | 26, /* bitsize */ |
85 | | true, /* pc_relative */ |
86 | | 0, /* bitpos */ |
87 | | complain_overflow_bitfield, /* complain_on_overflow */ |
88 | | bfd_elf_generic_reloc, /* special_function */ |
89 | | "R_FRV_LABEL24", /* name */ |
90 | | false, /* partial_inplace */ |
91 | | 0x7e03ffff, /* src_mask */ |
92 | | 0x7e03ffff, /* dst_mask */ |
93 | | true), /* pcrel_offset */ |
94 | | |
95 | | HOWTO (R_FRV_LO16, /* type */ |
96 | | 0, /* rightshift */ |
97 | | 4, /* size */ |
98 | | 16, /* bitsize */ |
99 | | false, /* pc_relative */ |
100 | | 0, /* bitpos */ |
101 | | complain_overflow_dont, /* complain_on_overflow */ |
102 | | bfd_elf_generic_reloc, /* special_function */ |
103 | | "R_FRV_LO16", /* name */ |
104 | | false, /* partial_inplace */ |
105 | | 0xffff, /* src_mask */ |
106 | | 0xffff, /* dst_mask */ |
107 | | false), /* pcrel_offset */ |
108 | | |
109 | | HOWTO (R_FRV_HI16, /* type */ |
110 | | 0, /* rightshift */ |
111 | | 4, /* size */ |
112 | | 16, /* bitsize */ |
113 | | false, /* pc_relative */ |
114 | | 0, /* bitpos */ |
115 | | complain_overflow_dont, /* complain_on_overflow */ |
116 | | bfd_elf_generic_reloc, /* special_function */ |
117 | | "R_FRV_HI16", /* name */ |
118 | | false, /* partial_inplace */ |
119 | | 0xffff, /* src_mask */ |
120 | | 0xffff, /* dst_mask */ |
121 | | false), /* pcrel_offset */ |
122 | | |
123 | | HOWTO (R_FRV_GPREL12, /* type */ |
124 | | 0, /* rightshift */ |
125 | | 4, /* size */ |
126 | | 12, /* bitsize */ |
127 | | false, /* pc_relative */ |
128 | | 0, /* bitpos */ |
129 | | complain_overflow_dont, /* complain_on_overflow */ |
130 | | bfd_elf_generic_reloc, /* special_function */ |
131 | | "R_FRV_GPREL12", /* name */ |
132 | | false, /* partial_inplace */ |
133 | | 0xfff, /* src_mask */ |
134 | | 0xfff, /* dst_mask */ |
135 | | false), /* pcrel_offset */ |
136 | | |
137 | | HOWTO (R_FRV_GPRELU12, /* type */ |
138 | | 0, /* rightshift */ |
139 | | 4, /* size */ |
140 | | 12, /* bitsize */ |
141 | | false, /* pc_relative */ |
142 | | 0, /* bitpos */ |
143 | | complain_overflow_dont, /* complain_on_overflow */ |
144 | | bfd_elf_generic_reloc, /* special_function */ |
145 | | "R_FRV_GPRELU12", /* name */ |
146 | | false, /* partial_inplace */ |
147 | | 0xfff, /* src_mask */ |
148 | | 0x3f03f, /* dst_mask */ |
149 | | false), /* pcrel_offset */ |
150 | | |
151 | | HOWTO (R_FRV_GPREL32, /* type */ |
152 | | 0, /* rightshift */ |
153 | | 4, /* size */ |
154 | | 32, /* bitsize */ |
155 | | false, /* pc_relative */ |
156 | | 0, /* bitpos */ |
157 | | complain_overflow_dont, /* complain_on_overflow */ |
158 | | bfd_elf_generic_reloc, /* special_function */ |
159 | | "R_FRV_GPREL32", /* name */ |
160 | | false, /* partial_inplace */ |
161 | | 0xffffffff, /* src_mask */ |
162 | | 0xffffffff, /* dst_mask */ |
163 | | false), /* pcrel_offset */ |
164 | | |
165 | | HOWTO (R_FRV_GPRELHI, /* type */ |
166 | | 0, /* rightshift */ |
167 | | 4, /* size */ |
168 | | 16, /* bitsize */ |
169 | | false, /* pc_relative */ |
170 | | 0, /* bitpos */ |
171 | | complain_overflow_dont, /* complain_on_overflow */ |
172 | | bfd_elf_generic_reloc, /* special_function */ |
173 | | "R_FRV_GPRELHI", /* name */ |
174 | | false, /* partial_inplace */ |
175 | | 0xffff, /* src_mask */ |
176 | | 0xffff, /* dst_mask */ |
177 | | false), /* pcrel_offset */ |
178 | | |
179 | | HOWTO (R_FRV_GPRELLO, /* type */ |
180 | | 0, /* rightshift */ |
181 | | 4, /* size */ |
182 | | 16, /* bitsize */ |
183 | | false, /* pc_relative */ |
184 | | 0, /* bitpos */ |
185 | | complain_overflow_dont, /* complain_on_overflow */ |
186 | | bfd_elf_generic_reloc, /* special_function */ |
187 | | "R_FRV_GPRELLO", /* name */ |
188 | | false, /* partial_inplace */ |
189 | | 0xffff, /* src_mask */ |
190 | | 0xffff, /* dst_mask */ |
191 | | false), /* pcrel_offset */ |
192 | | |
193 | | /* A 12-bit signed operand with the GOT offset for the address of |
194 | | the symbol. */ |
195 | | HOWTO (R_FRV_GOT12, /* type */ |
196 | | 0, /* rightshift */ |
197 | | 4, /* size */ |
198 | | 12, /* bitsize */ |
199 | | false, /* pc_relative */ |
200 | | 0, /* bitpos */ |
201 | | complain_overflow_signed, /* complain_on_overflow */ |
202 | | bfd_elf_generic_reloc, /* special_function */ |
203 | | "R_FRV_GOT12", /* name */ |
204 | | false, /* partial_inplace */ |
205 | | 0xfff, /* src_mask */ |
206 | | 0xfff, /* dst_mask */ |
207 | | false), /* pcrel_offset */ |
208 | | |
209 | | /* The upper 16 bits of the GOT offset for the address of the |
210 | | symbol. */ |
211 | | HOWTO (R_FRV_GOTHI, /* type */ |
212 | | 0, /* rightshift */ |
213 | | 4, /* size */ |
214 | | 16, /* bitsize */ |
215 | | false, /* pc_relative */ |
216 | | 0, /* bitpos */ |
217 | | complain_overflow_dont, /* complain_on_overflow */ |
218 | | bfd_elf_generic_reloc, /* special_function */ |
219 | | "R_FRV_GOTHI", /* name */ |
220 | | false, /* partial_inplace */ |
221 | | 0xffff, /* src_mask */ |
222 | | 0xffff, /* dst_mask */ |
223 | | false), /* pcrel_offset */ |
224 | | |
225 | | /* The lower 16 bits of the GOT offset for the address of the |
226 | | symbol. */ |
227 | | HOWTO (R_FRV_GOTLO, /* type */ |
228 | | 0, /* rightshift */ |
229 | | 4, /* size */ |
230 | | 16, /* bitsize */ |
231 | | false, /* pc_relative */ |
232 | | 0, /* bitpos */ |
233 | | complain_overflow_dont, /* complain_on_overflow */ |
234 | | bfd_elf_generic_reloc, /* special_function */ |
235 | | "R_FRV_GOTLO", /* name */ |
236 | | false, /* partial_inplace */ |
237 | | 0xffff, /* src_mask */ |
238 | | 0xffff, /* dst_mask */ |
239 | | false), /* pcrel_offset */ |
240 | | |
241 | | /* The 32-bit address of the canonical descriptor of a function. */ |
242 | | HOWTO (R_FRV_FUNCDESC, /* type */ |
243 | | 0, /* rightshift */ |
244 | | 4, /* size */ |
245 | | 32, /* bitsize */ |
246 | | false, /* pc_relative */ |
247 | | 0, /* bitpos */ |
248 | | complain_overflow_bitfield, /* complain_on_overflow */ |
249 | | bfd_elf_generic_reloc, /* special_function */ |
250 | | "R_FRV_FUNCDESC", /* name */ |
251 | | false, /* partial_inplace */ |
252 | | 0xffffffff, /* src_mask */ |
253 | | 0xffffffff, /* dst_mask */ |
254 | | false), /* pcrel_offset */ |
255 | | |
256 | | /* A 12-bit signed operand with the GOT offset for the address of |
257 | | canonical descriptor of a function. */ |
258 | | HOWTO (R_FRV_FUNCDESC_GOT12, /* type */ |
259 | | 0, /* rightshift */ |
260 | | 4, /* size */ |
261 | | 12, /* bitsize */ |
262 | | false, /* pc_relative */ |
263 | | 0, /* bitpos */ |
264 | | complain_overflow_signed, /* complain_on_overflow */ |
265 | | bfd_elf_generic_reloc, /* special_function */ |
266 | | "R_FRV_FUNCDESC_GOT12", /* name */ |
267 | | false, /* partial_inplace */ |
268 | | 0xfff, /* src_mask */ |
269 | | 0xfff, /* dst_mask */ |
270 | | false), /* pcrel_offset */ |
271 | | |
272 | | /* The upper 16 bits of the GOT offset for the address of the |
273 | | canonical descriptor of a function. */ |
274 | | HOWTO (R_FRV_FUNCDESC_GOTHI, /* type */ |
275 | | 0, /* rightshift */ |
276 | | 4, /* size */ |
277 | | 16, /* bitsize */ |
278 | | false, /* pc_relative */ |
279 | | 0, /* bitpos */ |
280 | | complain_overflow_dont, /* complain_on_overflow */ |
281 | | bfd_elf_generic_reloc, /* special_function */ |
282 | | "R_FRV_FUNCDESC_GOTHI", /* name */ |
283 | | false, /* partial_inplace */ |
284 | | 0xffff, /* src_mask */ |
285 | | 0xffff, /* dst_mask */ |
286 | | false), /* pcrel_offset */ |
287 | | |
288 | | /* The lower 16 bits of the GOT offset for the address of the |
289 | | canonical descriptor of a function. */ |
290 | | HOWTO (R_FRV_FUNCDESC_GOTLO, /* type */ |
291 | | 0, /* rightshift */ |
292 | | 4, /* size */ |
293 | | 16, /* bitsize */ |
294 | | false, /* pc_relative */ |
295 | | 0, /* bitpos */ |
296 | | complain_overflow_dont, /* complain_on_overflow */ |
297 | | bfd_elf_generic_reloc, /* special_function */ |
298 | | "R_FRV_FUNCDESC_GOTLO", /* name */ |
299 | | false, /* partial_inplace */ |
300 | | 0xffff, /* src_mask */ |
301 | | 0xffff, /* dst_mask */ |
302 | | false), /* pcrel_offset */ |
303 | | |
304 | | /* The 64-bit descriptor of a function. */ |
305 | | HOWTO (R_FRV_FUNCDESC_VALUE, /* type */ |
306 | | 0, /* rightshift */ |
307 | | 4, /* size */ |
308 | | 64, /* bitsize */ |
309 | | false, /* pc_relative */ |
310 | | 0, /* bitpos */ |
311 | | complain_overflow_bitfield, /* complain_on_overflow */ |
312 | | bfd_elf_generic_reloc, /* special_function */ |
313 | | "R_FRV_FUNCDESC_VALUE", /* name */ |
314 | | false, /* partial_inplace */ |
315 | | 0xffffffff, /* src_mask */ |
316 | | 0xffffffff, /* dst_mask */ |
317 | | false), /* pcrel_offset */ |
318 | | |
319 | | /* A 12-bit signed operand with the GOT offset for the address of |
320 | | canonical descriptor of a function. */ |
321 | | HOWTO (R_FRV_FUNCDESC_GOTOFF12, /* type */ |
322 | | 0, /* rightshift */ |
323 | | 4, /* size */ |
324 | | 12, /* bitsize */ |
325 | | false, /* pc_relative */ |
326 | | 0, /* bitpos */ |
327 | | complain_overflow_signed, /* complain_on_overflow */ |
328 | | bfd_elf_generic_reloc, /* special_function */ |
329 | | "R_FRV_FUNCDESC_GOTOFF12", /* name */ |
330 | | false, /* partial_inplace */ |
331 | | 0xfff, /* src_mask */ |
332 | | 0xfff, /* dst_mask */ |
333 | | false), /* pcrel_offset */ |
334 | | |
335 | | /* The upper 16 bits of the GOT offset for the address of the |
336 | | canonical descriptor of a function. */ |
337 | | HOWTO (R_FRV_FUNCDESC_GOTOFFHI, /* type */ |
338 | | 0, /* rightshift */ |
339 | | 4, /* size */ |
340 | | 16, /* bitsize */ |
341 | | false, /* pc_relative */ |
342 | | 0, /* bitpos */ |
343 | | complain_overflow_dont, /* complain_on_overflow */ |
344 | | bfd_elf_generic_reloc, /* special_function */ |
345 | | "R_FRV_FUNCDESC_GOTOFFHI", /* name */ |
346 | | false, /* partial_inplace */ |
347 | | 0xffff, /* src_mask */ |
348 | | 0xffff, /* dst_mask */ |
349 | | false), /* pcrel_offset */ |
350 | | |
351 | | /* The lower 16 bits of the GOT offset for the address of the |
352 | | canonical descriptor of a function. */ |
353 | | HOWTO (R_FRV_FUNCDESC_GOTOFFLO, /* type */ |
354 | | 0, /* rightshift */ |
355 | | 4, /* size */ |
356 | | 16, /* bitsize */ |
357 | | false, /* pc_relative */ |
358 | | 0, /* bitpos */ |
359 | | complain_overflow_dont, /* complain_on_overflow */ |
360 | | bfd_elf_generic_reloc, /* special_function */ |
361 | | "R_FRV_FUNCDESC_GOTOFFLO", /* name */ |
362 | | false, /* partial_inplace */ |
363 | | 0xffff, /* src_mask */ |
364 | | 0xffff, /* dst_mask */ |
365 | | false), /* pcrel_offset */ |
366 | | |
367 | | /* A 12-bit signed operand with the GOT offset for the address of |
368 | | the symbol. */ |
369 | | HOWTO (R_FRV_GOTOFF12, /* type */ |
370 | | 0, /* rightshift */ |
371 | | 4, /* size */ |
372 | | 12, /* bitsize */ |
373 | | false, /* pc_relative */ |
374 | | 0, /* bitpos */ |
375 | | complain_overflow_signed, /* complain_on_overflow */ |
376 | | bfd_elf_generic_reloc, /* special_function */ |
377 | | "R_FRV_GOTOFF12", /* name */ |
378 | | false, /* partial_inplace */ |
379 | | 0xfff, /* src_mask */ |
380 | | 0xfff, /* dst_mask */ |
381 | | false), /* pcrel_offset */ |
382 | | |
383 | | /* The upper 16 bits of the GOT offset for the address of the |
384 | | symbol. */ |
385 | | HOWTO (R_FRV_GOTOFFHI, /* type */ |
386 | | 0, /* rightshift */ |
387 | | 4, /* size */ |
388 | | 16, /* bitsize */ |
389 | | false, /* pc_relative */ |
390 | | 0, /* bitpos */ |
391 | | complain_overflow_dont, /* complain_on_overflow */ |
392 | | bfd_elf_generic_reloc, /* special_function */ |
393 | | "R_FRV_GOTOFFHI", /* name */ |
394 | | false, /* partial_inplace */ |
395 | | 0xffff, /* src_mask */ |
396 | | 0xffff, /* dst_mask */ |
397 | | false), /* pcrel_offset */ |
398 | | |
399 | | /* The lower 16 bits of the GOT offset for the address of the |
400 | | symbol. */ |
401 | | HOWTO (R_FRV_GOTOFFLO, /* type */ |
402 | | 0, /* rightshift */ |
403 | | 4, /* size */ |
404 | | 16, /* bitsize */ |
405 | | false, /* pc_relative */ |
406 | | 0, /* bitpos */ |
407 | | complain_overflow_dont, /* complain_on_overflow */ |
408 | | bfd_elf_generic_reloc, /* special_function */ |
409 | | "R_FRV_GOTOFFLO", /* name */ |
410 | | false, /* partial_inplace */ |
411 | | 0xffff, /* src_mask */ |
412 | | 0xffff, /* dst_mask */ |
413 | | false), /* pcrel_offset */ |
414 | | |
415 | | /* A 24-bit pc-relative relocation referencing the TLS PLT entry for |
416 | | a thread-local symbol. If the symbol number is 0, it refers to |
417 | | the module. */ |
418 | | HOWTO (R_FRV_GETTLSOFF, /* type */ |
419 | | 2, /* rightshift */ |
420 | | 4, /* size */ |
421 | | 26, /* bitsize */ |
422 | | true, /* pc_relative */ |
423 | | 0, /* bitpos */ |
424 | | complain_overflow_bitfield, /* complain_on_overflow */ |
425 | | bfd_elf_generic_reloc, /* special_function */ |
426 | | "R_FRV_GETTLSOFF", /* name */ |
427 | | false, /* partial_inplace */ |
428 | | 0x7e03ffff, /* src_mask */ |
429 | | 0x7e03ffff, /* dst_mask */ |
430 | | true), /* pcrel_offset */ |
431 | | |
432 | | /* A 64-bit TLS descriptor for a symbol. This relocation is only |
433 | | valid as a REL, dynamic relocation. */ |
434 | | HOWTO (R_FRV_TLSDESC_VALUE, /* type */ |
435 | | 0, /* rightshift */ |
436 | | 4, /* size */ |
437 | | 64, /* bitsize */ |
438 | | false, /* pc_relative */ |
439 | | 0, /* bitpos */ |
440 | | complain_overflow_bitfield, /* complain_on_overflow */ |
441 | | bfd_elf_generic_reloc, /* special_function */ |
442 | | "R_FRV_TLSDESC_VALUE", /* name */ |
443 | | false, /* partial_inplace */ |
444 | | 0xffffffff, /* src_mask */ |
445 | | 0xffffffff, /* dst_mask */ |
446 | | false), /* pcrel_offset */ |
447 | | |
448 | | /* A 12-bit signed operand with the GOT offset for the TLS |
449 | | descriptor of the symbol. */ |
450 | | HOWTO (R_FRV_GOTTLSDESC12, /* type */ |
451 | | 0, /* rightshift */ |
452 | | 4, /* size */ |
453 | | 12, /* bitsize */ |
454 | | false, /* pc_relative */ |
455 | | 0, /* bitpos */ |
456 | | complain_overflow_signed, /* complain_on_overflow */ |
457 | | bfd_elf_generic_reloc, /* special_function */ |
458 | | "R_FRV_GOTTLSDESC12", /* name */ |
459 | | false, /* partial_inplace */ |
460 | | 0xfff, /* src_mask */ |
461 | | 0xfff, /* dst_mask */ |
462 | | false), /* pcrel_offset */ |
463 | | |
464 | | /* The upper 16 bits of the GOT offset for the TLS descriptor of the |
465 | | symbol. */ |
466 | | HOWTO (R_FRV_GOTTLSDESCHI, /* type */ |
467 | | 0, /* rightshift */ |
468 | | 4, /* size */ |
469 | | 16, /* bitsize */ |
470 | | false, /* pc_relative */ |
471 | | 0, /* bitpos */ |
472 | | complain_overflow_dont, /* complain_on_overflow */ |
473 | | bfd_elf_generic_reloc, /* special_function */ |
474 | | "R_FRV_GOTTLSDESCHI", /* name */ |
475 | | false, /* partial_inplace */ |
476 | | 0xffff, /* src_mask */ |
477 | | 0xffff, /* dst_mask */ |
478 | | false), /* pcrel_offset */ |
479 | | |
480 | | /* The lower 16 bits of the GOT offset for the TLS descriptor of the |
481 | | symbol. */ |
482 | | HOWTO (R_FRV_GOTTLSDESCLO, /* type */ |
483 | | 0, /* rightshift */ |
484 | | 4, /* size */ |
485 | | 16, /* bitsize */ |
486 | | false, /* pc_relative */ |
487 | | 0, /* bitpos */ |
488 | | complain_overflow_dont, /* complain_on_overflow */ |
489 | | bfd_elf_generic_reloc, /* special_function */ |
490 | | "R_FRV_GOTTLSDESCLO", /* name */ |
491 | | false, /* partial_inplace */ |
492 | | 0xffff, /* src_mask */ |
493 | | 0xffff, /* dst_mask */ |
494 | | false), /* pcrel_offset */ |
495 | | |
496 | | /* A 12-bit signed operand with the offset from the module base |
497 | | address to the thread-local symbol address. */ |
498 | | HOWTO (R_FRV_TLSMOFF12, /* type */ |
499 | | 0, /* rightshift */ |
500 | | 4, /* size */ |
501 | | 12, /* bitsize */ |
502 | | false, /* pc_relative */ |
503 | | 0, /* bitpos */ |
504 | | complain_overflow_signed, /* complain_on_overflow */ |
505 | | bfd_elf_generic_reloc, /* special_function */ |
506 | | "R_FRV_TLSMOFF12", /* name */ |
507 | | false, /* partial_inplace */ |
508 | | 0xfff, /* src_mask */ |
509 | | 0xfff, /* dst_mask */ |
510 | | false), /* pcrel_offset */ |
511 | | |
512 | | /* The upper 16 bits of the offset from the module base address to |
513 | | the thread-local symbol address. */ |
514 | | HOWTO (R_FRV_TLSMOFFHI, /* type */ |
515 | | 0, /* rightshift */ |
516 | | 4, /* size */ |
517 | | 16, /* bitsize */ |
518 | | false, /* pc_relative */ |
519 | | 0, /* bitpos */ |
520 | | complain_overflow_dont, /* complain_on_overflow */ |
521 | | bfd_elf_generic_reloc, /* special_function */ |
522 | | "R_FRV_TLSMOFFHI", /* name */ |
523 | | false, /* partial_inplace */ |
524 | | 0xffff, /* src_mask */ |
525 | | 0xffff, /* dst_mask */ |
526 | | false), /* pcrel_offset */ |
527 | | |
528 | | /* The lower 16 bits of the offset from the module base address to |
529 | | the thread-local symbol address. */ |
530 | | HOWTO (R_FRV_TLSMOFFLO, /* type */ |
531 | | 0, /* rightshift */ |
532 | | 4, /* size */ |
533 | | 16, /* bitsize */ |
534 | | false, /* pc_relative */ |
535 | | 0, /* bitpos */ |
536 | | complain_overflow_dont, /* complain_on_overflow */ |
537 | | bfd_elf_generic_reloc, /* special_function */ |
538 | | "R_FRV_TLSMOFFLO", /* name */ |
539 | | false, /* partial_inplace */ |
540 | | 0xffff, /* src_mask */ |
541 | | 0xffff, /* dst_mask */ |
542 | | false), /* pcrel_offset */ |
543 | | |
544 | | /* A 12-bit signed operand with the GOT offset for the TLSOFF entry |
545 | | for a symbol. */ |
546 | | HOWTO (R_FRV_GOTTLSOFF12, /* type */ |
547 | | 0, /* rightshift */ |
548 | | 4, /* size */ |
549 | | 12, /* bitsize */ |
550 | | false, /* pc_relative */ |
551 | | 0, /* bitpos */ |
552 | | complain_overflow_signed, /* complain_on_overflow */ |
553 | | bfd_elf_generic_reloc, /* special_function */ |
554 | | "R_FRV_GOTTLSOFF12", /* name */ |
555 | | false, /* partial_inplace */ |
556 | | 0xfff, /* src_mask */ |
557 | | 0xfff, /* dst_mask */ |
558 | | false), /* pcrel_offset */ |
559 | | |
560 | | /* The upper 16 bits of the GOT offset for the TLSOFF entry for a |
561 | | symbol. */ |
562 | | HOWTO (R_FRV_GOTTLSOFFHI, /* type */ |
563 | | 0, /* rightshift */ |
564 | | 4, /* size */ |
565 | | 16, /* bitsize */ |
566 | | false, /* pc_relative */ |
567 | | 0, /* bitpos */ |
568 | | complain_overflow_dont, /* complain_on_overflow */ |
569 | | bfd_elf_generic_reloc, /* special_function */ |
570 | | "R_FRV_GOTTLSOFFHI", /* name */ |
571 | | false, /* partial_inplace */ |
572 | | 0xffff, /* src_mask */ |
573 | | 0xffff, /* dst_mask */ |
574 | | false), /* pcrel_offset */ |
575 | | |
576 | | /* The lower 16 bits of the GOT offset for the TLSOFF entry for a |
577 | | symbol. */ |
578 | | HOWTO (R_FRV_GOTTLSOFFLO, /* type */ |
579 | | 0, /* rightshift */ |
580 | | 4, /* size */ |
581 | | 16, /* bitsize */ |
582 | | false, /* pc_relative */ |
583 | | 0, /* bitpos */ |
584 | | complain_overflow_dont, /* complain_on_overflow */ |
585 | | bfd_elf_generic_reloc, /* special_function */ |
586 | | "R_FRV_GOTTLSOFFLO", /* name */ |
587 | | false, /* partial_inplace */ |
588 | | 0xffff, /* src_mask */ |
589 | | 0xffff, /* dst_mask */ |
590 | | false), /* pcrel_offset */ |
591 | | |
592 | | /* The 32-bit offset from the thread pointer (not the module base |
593 | | address) to a thread-local symbol. */ |
594 | | HOWTO (R_FRV_TLSOFF, /* type */ |
595 | | 0, /* rightshift */ |
596 | | 4, /* size */ |
597 | | 32, /* bitsize */ |
598 | | false, /* pc_relative */ |
599 | | 0, /* bitpos */ |
600 | | complain_overflow_dont, /* complain_on_overflow */ |
601 | | bfd_elf_generic_reloc, /* special_function */ |
602 | | "R_FRV_TLSOFF", /* name */ |
603 | | false, /* partial_inplace */ |
604 | | 0xffffffff, /* src_mask */ |
605 | | 0xffffffff, /* dst_mask */ |
606 | | false), /* pcrel_offset */ |
607 | | |
608 | | /* An annotation for linker relaxation, that denotes the |
609 | | symbol+addend whose TLS descriptor is referenced by the sum of |
610 | | the two input registers of an ldd instruction. */ |
611 | | HOWTO (R_FRV_TLSDESC_RELAX, /* type */ |
612 | | 0, /* rightshift */ |
613 | | 4, /* size */ |
614 | | 0, /* bitsize */ |
615 | | false, /* pc_relative */ |
616 | | 0, /* bitpos */ |
617 | | complain_overflow_dont, /* complain_on_overflow */ |
618 | | bfd_elf_generic_reloc, /* special_function */ |
619 | | "R_FRV_TLSDESC_RELAX", /* name */ |
620 | | false, /* partial_inplace */ |
621 | | 0, /* src_mask */ |
622 | | 0, /* dst_mask */ |
623 | | false), /* pcrel_offset */ |
624 | | |
625 | | /* An annotation for linker relaxation, that denotes the |
626 | | symbol+addend whose TLS resolver entry point is given by the sum |
627 | | of the two register operands of an calll instruction. */ |
628 | | HOWTO (R_FRV_GETTLSOFF_RELAX, /* type */ |
629 | | 0, /* rightshift */ |
630 | | 4, /* size */ |
631 | | 0, /* bitsize */ |
632 | | false, /* pc_relative */ |
633 | | 0, /* bitpos */ |
634 | | complain_overflow_dont, /* complain_on_overflow */ |
635 | | bfd_elf_generic_reloc, /* special_function */ |
636 | | "R_FRV_GETTLSOFF_RELAX", /* name */ |
637 | | false, /* partial_inplace */ |
638 | | 0, /* src_mask */ |
639 | | 0, /* dst_mask */ |
640 | | false), /* pcrel_offset */ |
641 | | |
642 | | /* An annotation for linker relaxation, that denotes the |
643 | | symbol+addend whose TLS offset GOT entry is given by the sum of |
644 | | the two input registers of an ld instruction. */ |
645 | | HOWTO (R_FRV_TLSOFF_RELAX, /* type */ |
646 | | 0, /* rightshift */ |
647 | | 4, /* size */ |
648 | | 0, /* bitsize */ |
649 | | false, /* pc_relative */ |
650 | | 0, /* bitpos */ |
651 | | complain_overflow_bitfield, /* complain_on_overflow */ |
652 | | bfd_elf_generic_reloc, /* special_function */ |
653 | | "R_FRV_TLSOFF_RELAX", /* name */ |
654 | | false, /* partial_inplace */ |
655 | | 0, /* src_mask */ |
656 | | 0, /* dst_mask */ |
657 | | false), /* pcrel_offset */ |
658 | | |
659 | | /* A 32-bit offset from the module base address to |
660 | | the thread-local symbol address. */ |
661 | | HOWTO (R_FRV_TLSMOFF, /* type */ |
662 | | 0, /* rightshift */ |
663 | | 4, /* size */ |
664 | | 32, /* bitsize */ |
665 | | false, /* pc_relative */ |
666 | | 0, /* bitpos */ |
667 | | complain_overflow_dont, /* complain_on_overflow */ |
668 | | bfd_elf_generic_reloc, /* special_function */ |
669 | | "R_FRV_TLSMOFF", /* name */ |
670 | | false, /* partial_inplace */ |
671 | | 0xffffffff, /* src_mask */ |
672 | | 0xffffffff, /* dst_mask */ |
673 | | false), /* pcrel_offset */ |
674 | | }; |
675 | | |
676 | | /* GNU extension to record C++ vtable hierarchy. */ |
677 | | static reloc_howto_type elf32_frv_vtinherit_howto = |
678 | | HOWTO (R_FRV_GNU_VTINHERIT, /* type */ |
679 | | 0, /* rightshift */ |
680 | | 4, /* size */ |
681 | | 0, /* bitsize */ |
682 | | false, /* pc_relative */ |
683 | | 0, /* bitpos */ |
684 | | complain_overflow_dont, /* complain_on_overflow */ |
685 | | NULL, /* special_function */ |
686 | | "R_FRV_GNU_VTINHERIT", /* name */ |
687 | | false, /* partial_inplace */ |
688 | | 0, /* src_mask */ |
689 | | 0, /* dst_mask */ |
690 | | false); /* pcrel_offset */ |
691 | | |
692 | | /* GNU extension to record C++ vtable member usage. */ |
693 | | static reloc_howto_type elf32_frv_vtentry_howto = |
694 | | HOWTO (R_FRV_GNU_VTENTRY, /* type */ |
695 | | 0, /* rightshift */ |
696 | | 4, /* size */ |
697 | | 0, /* bitsize */ |
698 | | false, /* pc_relative */ |
699 | | 0, /* bitpos */ |
700 | | complain_overflow_dont, /* complain_on_overflow */ |
701 | | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ |
702 | | "R_FRV_GNU_VTENTRY", /* name */ |
703 | | false, /* partial_inplace */ |
704 | | 0, /* src_mask */ |
705 | | 0, /* dst_mask */ |
706 | | false); /* pcrel_offset */ |
707 | | |
708 | | /* The following 3 relocations are REL. The only difference to the |
709 | | entries in the table above are that partial_inplace is true. */ |
710 | | static reloc_howto_type elf32_frv_rel_32_howto = |
711 | | HOWTO (R_FRV_32, /* type */ |
712 | | 0, /* rightshift */ |
713 | | 4, /* size */ |
714 | | 32, /* bitsize */ |
715 | | false, /* pc_relative */ |
716 | | 0, /* bitpos */ |
717 | | complain_overflow_bitfield, /* complain_on_overflow */ |
718 | | bfd_elf_generic_reloc, /* special_function */ |
719 | | "R_FRV_32", /* name */ |
720 | | true, /* partial_inplace */ |
721 | | 0xffffffff, /* src_mask */ |
722 | | 0xffffffff, /* dst_mask */ |
723 | | false); /* pcrel_offset */ |
724 | | |
725 | | static reloc_howto_type elf32_frv_rel_funcdesc_howto = |
726 | | HOWTO (R_FRV_FUNCDESC, /* type */ |
727 | | 0, /* rightshift */ |
728 | | 4, /* size */ |
729 | | 32, /* bitsize */ |
730 | | false, /* pc_relative */ |
731 | | 0, /* bitpos */ |
732 | | complain_overflow_bitfield, /* complain_on_overflow */ |
733 | | bfd_elf_generic_reloc, /* special_function */ |
734 | | "R_FRV_FUNCDESC", /* name */ |
735 | | true, /* partial_inplace */ |
736 | | 0xffffffff, /* src_mask */ |
737 | | 0xffffffff, /* dst_mask */ |
738 | | false); /* pcrel_offset */ |
739 | | |
740 | | static reloc_howto_type elf32_frv_rel_funcdesc_value_howto = |
741 | | HOWTO (R_FRV_FUNCDESC_VALUE, /* type */ |
742 | | 0, /* rightshift */ |
743 | | 4, /* size */ |
744 | | 64, /* bitsize */ |
745 | | false, /* pc_relative */ |
746 | | 0, /* bitpos */ |
747 | | complain_overflow_bitfield, /* complain_on_overflow */ |
748 | | bfd_elf_generic_reloc, /* special_function */ |
749 | | "R_FRV_FUNCDESC_VALUE", /* name */ |
750 | | true, /* partial_inplace */ |
751 | | 0xffffffff, /* src_mask */ |
752 | | 0xffffffff, /* dst_mask */ |
753 | | false); /* pcrel_offset */ |
754 | | |
755 | | static reloc_howto_type elf32_frv_rel_tlsdesc_value_howto = |
756 | | /* A 64-bit TLS descriptor for a symbol. The first word resolves to |
757 | | an entry point, and the second resolves to a special argument. |
758 | | If the symbol turns out to be in static TLS, the entry point is a |
759 | | return instruction, and the special argument is the TLS offset |
760 | | for the symbol. If it's in dynamic TLS, the entry point is a TLS |
761 | | offset resolver, and the special argument is a pointer to a data |
762 | | structure allocated by the dynamic loader, containing the GOT |
763 | | address for the offset resolver, the module id, the offset within |
764 | | the module, and anything else the TLS offset resolver might need |
765 | | to determine the TLS offset for the symbol in the running |
766 | | thread. */ |
767 | | HOWTO (R_FRV_TLSDESC_VALUE, /* type */ |
768 | | 0, /* rightshift */ |
769 | | 4, /* size */ |
770 | | 64, /* bitsize */ |
771 | | false, /* pc_relative */ |
772 | | 0, /* bitpos */ |
773 | | complain_overflow_bitfield, /* complain_on_overflow */ |
774 | | bfd_elf_generic_reloc, /* special_function */ |
775 | | "R_FRV_TLSDESC_VALUE", /* name */ |
776 | | true, /* partial_inplace */ |
777 | | 0xffffffff, /* src_mask */ |
778 | | 0xffffffff, /* dst_mask */ |
779 | | false); /* pcrel_offset */ |
780 | | |
781 | | static reloc_howto_type elf32_frv_rel_tlsoff_howto = |
782 | | /* The 32-bit offset from the thread pointer (not the module base |
783 | | address) to a thread-local symbol. */ |
784 | | HOWTO (R_FRV_TLSOFF, /* type */ |
785 | | 0, /* rightshift */ |
786 | | 4, /* size */ |
787 | | 32, /* bitsize */ |
788 | | false, /* pc_relative */ |
789 | | 0, /* bitpos */ |
790 | | complain_overflow_bitfield, /* complain_on_overflow */ |
791 | | bfd_elf_generic_reloc, /* special_function */ |
792 | | "R_FRV_TLSOFF", /* name */ |
793 | | true, /* partial_inplace */ |
794 | | 0xffffffff, /* src_mask */ |
795 | | 0xffffffff, /* dst_mask */ |
796 | | false); /* pcrel_offset */ |
797 | | |
798 | | |
799 | | |
800 | | extern const bfd_target frv_elf32_fdpic_vec; |
801 | 36 | #define IS_FDPIC(bfd) ((bfd)->xvec == &frv_elf32_fdpic_vec) |
802 | | |
803 | | /* An extension of the elf hash table data structure, containing some |
804 | | additional FRV-specific data. */ |
805 | | struct frvfdpic_elf_link_hash_table |
806 | | { |
807 | | struct elf_link_hash_table elf; |
808 | | |
809 | | /* A pointer to the .rofixup section. */ |
810 | | asection *sgotfixup; |
811 | | /* GOT base offset. */ |
812 | | bfd_vma got0; |
813 | | /* Location of the first non-lazy PLT entry, i.e., the number of |
814 | | bytes taken by lazy PLT entries. If locally-bound TLS |
815 | | descriptors require a ret instruction, it will be placed at this |
816 | | offset. */ |
817 | | bfd_vma plt0; |
818 | | /* A hash table holding information about which symbols were |
819 | | referenced with which PIC-related relocations. */ |
820 | | struct htab *relocs_info; |
821 | | /* Summary reloc information collected by |
822 | | _frvfdpic_count_got_plt_entries. */ |
823 | | struct _frvfdpic_dynamic_got_info *g; |
824 | | }; |
825 | | |
826 | | /* Get the FRV ELF linker hash table from a link_info structure. */ |
827 | | |
828 | | #define frvfdpic_hash_table(p) \ |
829 | 0 | ((is_elf_hash_table ((p)->hash) \ |
830 | 0 | && elf_hash_table_id (elf_hash_table (p)) == FRV_ELF_DATA) \ |
831 | 0 | ? (struct frvfdpic_elf_link_hash_table *) (p)->hash : NULL) |
832 | | |
833 | | #define frvfdpic_got_section(info) \ |
834 | 0 | (frvfdpic_hash_table (info)->elf.sgot) |
835 | | #define frvfdpic_gotrel_section(info) \ |
836 | 0 | (frvfdpic_hash_table (info)->elf.srelgot) |
837 | | #define frvfdpic_gotfixup_section(info) \ |
838 | 0 | (frvfdpic_hash_table (info)->sgotfixup) |
839 | | #define frvfdpic_plt_section(info) \ |
840 | 0 | (frvfdpic_hash_table (info)->elf.splt) |
841 | | #define frvfdpic_pltrel_section(info) \ |
842 | 0 | (frvfdpic_hash_table (info)->elf.srelplt) |
843 | | #define frvfdpic_relocs_info(info) \ |
844 | 0 | (frvfdpic_hash_table (info)->relocs_info) |
845 | | #define frvfdpic_got_initial_offset(info) \ |
846 | 0 | (frvfdpic_hash_table (info)->got0) |
847 | | #define frvfdpic_plt_initial_offset(info) \ |
848 | 0 | (frvfdpic_hash_table (info)->plt0) |
849 | | #define frvfdpic_dynamic_got_plt_info(info) \ |
850 | 0 | (frvfdpic_hash_table (info)->g) |
851 | | |
852 | | /* Currently it's the same, but if some day we have a reason to change |
853 | | it, we'd better be using a different macro. |
854 | | |
855 | | FIXME: if there's any TLS PLT entry that uses local-exec or |
856 | | initial-exec models, we could use the ret at the end of any of them |
857 | | instead of adding one more. */ |
858 | | #define frvfdpic_plt_tls_ret_offset(info) \ |
859 | | (frvfdpic_plt_initial_offset (info)) |
860 | | |
861 | | /* The name of the dynamic interpreter. This is put in the .interp |
862 | | section. */ |
863 | | |
864 | 0 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" |
865 | | |
866 | 0 | #define DEFAULT_STACK_SIZE 0x20000 |
867 | | |
868 | | /* This structure is used to collect the number of entries present in |
869 | | each addressable range of the got. */ |
870 | | struct _frvfdpic_dynamic_got_info |
871 | | { |
872 | | /* Several bits of information about the current link. */ |
873 | | struct bfd_link_info *info; |
874 | | /* Total GOT size needed for GOT entries within the 12-, 16- or 32-bit |
875 | | ranges. */ |
876 | | bfd_vma got12, gotlos, gothilo; |
877 | | /* Total GOT size needed for function descriptor entries within the 12-, |
878 | | 16- or 32-bit ranges. */ |
879 | | bfd_vma fd12, fdlos, fdhilo; |
880 | | /* Total GOT size needed by function descriptor entries referenced |
881 | | in PLT entries, that would be profitable to place in offsets |
882 | | close to the PIC register. */ |
883 | | bfd_vma fdplt; |
884 | | /* Total PLT size needed by lazy PLT entries. */ |
885 | | bfd_vma lzplt; |
886 | | /* Total GOT size needed for TLS descriptor entries within the 12-, |
887 | | 16- or 32-bit ranges. */ |
888 | | bfd_vma tlsd12, tlsdlos, tlsdhilo; |
889 | | /* Total GOT size needed by TLS descriptors referenced in PLT |
890 | | entries, that would be profitable to place in offers close to the |
891 | | PIC register. */ |
892 | | bfd_vma tlsdplt; |
893 | | /* Total PLT size needed by TLS lazy PLT entries. */ |
894 | | bfd_vma tlslzplt; |
895 | | /* Number of relocations carried over from input object files. */ |
896 | | unsigned long relocs; |
897 | | /* Number of fixups introduced by relocations in input object files. */ |
898 | | unsigned long fixups; |
899 | | /* The number of fixups that reference the ret instruction added to |
900 | | the PLT for locally-resolved TLS descriptors. */ |
901 | | unsigned long tls_ret_refs; |
902 | | }; |
903 | | |
904 | | /* This structure is used to assign offsets to got entries, function |
905 | | descriptors, plt entries and lazy plt entries. */ |
906 | | |
907 | | struct _frvfdpic_dynamic_got_plt_info |
908 | | { |
909 | | /* Summary information collected with _frvfdpic_count_got_plt_entries. */ |
910 | | struct _frvfdpic_dynamic_got_info g; |
911 | | |
912 | | /* For each addressable range, we record a MAX (positive) and MIN |
913 | | (negative) value. CUR is used to assign got entries, and it's |
914 | | incremented from an initial positive value to MAX, then from MIN |
915 | | to FDCUR (unless FDCUR wraps around first). FDCUR is used to |
916 | | assign function descriptors, and it's decreased from an initial |
917 | | non-positive value to MIN, then from MAX down to CUR (unless CUR |
918 | | wraps around first). All of MIN, MAX, CUR and FDCUR always point |
919 | | to even words. ODD, if non-zero, indicates an odd word to be |
920 | | used for the next got entry, otherwise CUR is used and |
921 | | incremented by a pair of words, wrapping around when it reaches |
922 | | MAX. FDCUR is decremented (and wrapped) before the next function |
923 | | descriptor is chosen. FDPLT indicates the number of remaining |
924 | | slots that can be used for function descriptors used only by PLT |
925 | | entries. |
926 | | |
927 | | TMAX, TMIN and TCUR are used to assign TLS descriptors. TCUR |
928 | | starts as MAX, and grows up to TMAX, then wraps around to TMIN |
929 | | and grows up to MIN. TLSDPLT indicates the number of remaining |
930 | | slots that can be used for TLS descriptors used only by TLS PLT |
931 | | entries. */ |
932 | | struct _frvfdpic_dynamic_got_alloc_data |
933 | | { |
934 | | bfd_signed_vma max, cur, odd, fdcur, min; |
935 | | bfd_signed_vma tmax, tcur, tmin; |
936 | | bfd_vma fdplt, tlsdplt; |
937 | | } got12, gotlos, gothilo; |
938 | | }; |
939 | | |
940 | | /* Create an FRV ELF linker hash table. */ |
941 | | |
942 | | static struct bfd_link_hash_table * |
943 | | frvfdpic_elf_link_hash_table_create (bfd *abfd) |
944 | 0 | { |
945 | 0 | struct frvfdpic_elf_link_hash_table *ret; |
946 | 0 | size_t amt = sizeof (struct frvfdpic_elf_link_hash_table); |
947 | |
|
948 | 0 | ret = bfd_zmalloc (amt); |
949 | 0 | if (ret == NULL) |
950 | 0 | return NULL; |
951 | | |
952 | 0 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, |
953 | 0 | _bfd_elf_link_hash_newfunc, |
954 | 0 | sizeof (struct elf_link_hash_entry))) |
955 | 0 | { |
956 | 0 | free (ret); |
957 | 0 | return NULL; |
958 | 0 | } |
959 | | |
960 | 0 | return &ret->elf.root; |
961 | 0 | } |
962 | | |
963 | | /* Decide whether a reference to a symbol can be resolved locally or |
964 | | not. If the symbol is protected, we want the local address, but |
965 | | its function descriptor must be assigned by the dynamic linker. */ |
966 | | #define FRVFDPIC_SYM_LOCAL(INFO, H) \ |
967 | 0 | (_bfd_elf_symbol_refs_local_p ((H), (INFO), 1) \ |
968 | 0 | || ! elf_hash_table (INFO)->dynamic_sections_created) |
969 | | #define FRVFDPIC_FUNCDESC_LOCAL(INFO, H) \ |
970 | 0 | ((H)->dynindx == -1 || ! elf_hash_table (INFO)->dynamic_sections_created) |
971 | | |
972 | | /* This structure collects information on what kind of GOT, PLT or |
973 | | function descriptors are required by relocations that reference a |
974 | | certain symbol. */ |
975 | | struct frvfdpic_relocs_info |
976 | | { |
977 | | /* The index of the symbol, as stored in the relocation r_info, if |
978 | | we have a local symbol; -1 otherwise. */ |
979 | | long symndx; |
980 | | union |
981 | | { |
982 | | /* The input bfd in which the symbol is defined, if it's a local |
983 | | symbol. */ |
984 | | bfd *abfd; |
985 | | /* If symndx == -1, the hash table entry corresponding to a global |
986 | | symbol (even if it turns out to bind locally, in which case it |
987 | | should ideally be replaced with section's symndx + addend). */ |
988 | | struct elf_link_hash_entry *h; |
989 | | } d; |
990 | | /* The addend of the relocation that references the symbol. */ |
991 | | bfd_vma addend; |
992 | | |
993 | | /* The fields above are used to identify an entry. The fields below |
994 | | contain information on how an entry is used and, later on, which |
995 | | locations it was assigned. */ |
996 | | /* The following 3 fields record whether the symbol+addend above was |
997 | | ever referenced with a GOT relocation. The 12 suffix indicates a |
998 | | GOT12 relocation; los is used for GOTLO relocations that are not |
999 | | matched by a GOTHI relocation; hilo is used for GOTLO/GOTHI |
1000 | | pairs. */ |
1001 | | unsigned got12:1; |
1002 | | unsigned gotlos:1; |
1003 | | unsigned gothilo:1; |
1004 | | /* Whether a FUNCDESC relocation references symbol+addend. */ |
1005 | | unsigned fd:1; |
1006 | | /* Whether a FUNCDESC_GOT relocation references symbol+addend. */ |
1007 | | unsigned fdgot12:1; |
1008 | | unsigned fdgotlos:1; |
1009 | | unsigned fdgothilo:1; |
1010 | | /* Whether a FUNCDESC_GOTOFF relocation references symbol+addend. */ |
1011 | | unsigned fdgoff12:1; |
1012 | | unsigned fdgofflos:1; |
1013 | | unsigned fdgoffhilo:1; |
1014 | | /* Whether a GETTLSOFF relocation references symbol+addend. */ |
1015 | | unsigned tlsplt:1; |
1016 | | /* FIXME: we should probably add tlspltdesc, tlspltoff and |
1017 | | tlspltimm, to tell what kind of TLS PLT entry we're generating. |
1018 | | We might instead just pre-compute flags telling whether the |
1019 | | object is suitable for local exec, initial exec or general |
1020 | | dynamic addressing, and use that all over the place. We could |
1021 | | also try to do a better job of merging TLSOFF and TLSDESC entries |
1022 | | in main executables, but perhaps we can get rid of TLSDESC |
1023 | | entirely in them instead. */ |
1024 | | /* Whether a GOTTLSDESC relocation references symbol+addend. */ |
1025 | | unsigned tlsdesc12:1; |
1026 | | unsigned tlsdesclos:1; |
1027 | | unsigned tlsdeschilo:1; |
1028 | | /* Whether a GOTTLSOFF relocation references symbol+addend. */ |
1029 | | unsigned tlsoff12:1; |
1030 | | unsigned tlsofflos:1; |
1031 | | unsigned tlsoffhilo:1; |
1032 | | /* Whether symbol+addend is referenced with GOTOFF12, GOTOFFLO or |
1033 | | GOTOFFHI relocations. The addend doesn't really matter, since we |
1034 | | envision that this will only be used to check whether the symbol |
1035 | | is mapped to the same segment as the got. */ |
1036 | | unsigned gotoff:1; |
1037 | | /* Whether symbol+addend is referenced by a LABEL24 relocation. */ |
1038 | | unsigned call:1; |
1039 | | /* Whether symbol+addend is referenced by a 32 or FUNCDESC_VALUE |
1040 | | relocation. */ |
1041 | | unsigned sym:1; |
1042 | | /* Whether we need a PLT entry for a symbol. Should be implied by |
1043 | | something like: |
1044 | | (call && symndx == -1 && ! FRVFDPIC_SYM_LOCAL (info, d.h)) */ |
1045 | | unsigned plt:1; |
1046 | | /* Whether a function descriptor should be created in this link unit |
1047 | | for symbol+addend. Should be implied by something like: |
1048 | | (plt || fdgotoff12 || fdgotofflos || fdgotofflohi |
1049 | | || ((fd || fdgot12 || fdgotlos || fdgothilo) |
1050 | | && (symndx != -1 || FRVFDPIC_FUNCDESC_LOCAL (info, d.h)))) */ |
1051 | | unsigned privfd:1; |
1052 | | /* Whether a lazy PLT entry is needed for this symbol+addend. |
1053 | | Should be implied by something like: |
1054 | | (privfd && symndx == -1 && ! FRVFDPIC_SYM_LOCAL (info, d.h) |
1055 | | && ! (info->flags & DF_BIND_NOW)) */ |
1056 | | unsigned lazyplt:1; |
1057 | | /* Whether we've already emitted GOT relocations and PLT entries as |
1058 | | needed for this symbol. */ |
1059 | | unsigned done:1; |
1060 | | |
1061 | | /* The number of R_FRV_32, R_FRV_FUNCDESC, R_FRV_FUNCDESC_VALUE and |
1062 | | R_FRV_TLSDESC_VALUE, R_FRV_TLSOFF relocations referencing |
1063 | | symbol+addend. */ |
1064 | | unsigned relocs32, relocsfd, relocsfdv, relocstlsd, relocstlsoff; |
1065 | | |
1066 | | /* The number of .rofixups entries and dynamic relocations allocated |
1067 | | for this symbol, minus any that might have already been used. */ |
1068 | | unsigned fixups, dynrelocs; |
1069 | | |
1070 | | /* The offsets of the GOT entries assigned to symbol+addend, to the |
1071 | | function descriptor's address, and to a function descriptor, |
1072 | | respectively. Should be zero if unassigned. The offsets are |
1073 | | counted from the value that will be assigned to the PIC register, |
1074 | | not from the beginning of the .got section. */ |
1075 | | bfd_signed_vma got_entry, fdgot_entry, fd_entry; |
1076 | | /* The offsets of the PLT entries assigned to symbol+addend, |
1077 | | non-lazy and lazy, respectively. If unassigned, should be |
1078 | | (bfd_vma)-1. */ |
1079 | | bfd_vma plt_entry, lzplt_entry; |
1080 | | /* The offsets of the GOT entries for TLS offset and TLS descriptor. */ |
1081 | | bfd_signed_vma tlsoff_entry, tlsdesc_entry; |
1082 | | /* The offset of the TLS offset PLT entry. */ |
1083 | | bfd_vma tlsplt_entry; |
1084 | | }; |
1085 | | |
1086 | | /* Compute a hash with the key fields of an frvfdpic_relocs_info entry. */ |
1087 | | static hashval_t |
1088 | | frvfdpic_relocs_info_hash (const void *entry_) |
1089 | 0 | { |
1090 | 0 | const struct frvfdpic_relocs_info *entry = entry_; |
1091 | |
|
1092 | 0 | return (entry->symndx == -1 |
1093 | 0 | ? (long) entry->d.h->root.root.hash |
1094 | 0 | : entry->symndx + (long) entry->d.abfd->id * 257) + entry->addend; |
1095 | 0 | } |
1096 | | |
1097 | | /* Test whether the key fields of two frvfdpic_relocs_info entries are |
1098 | | identical. */ |
1099 | | static int |
1100 | | frvfdpic_relocs_info_eq (const void *entry1, const void *entry2) |
1101 | 0 | { |
1102 | 0 | const struct frvfdpic_relocs_info *e1 = entry1; |
1103 | 0 | const struct frvfdpic_relocs_info *e2 = entry2; |
1104 | |
|
1105 | 0 | return e1->symndx == e2->symndx && e1->addend == e2->addend |
1106 | 0 | && (e1->symndx == -1 ? e1->d.h == e2->d.h : e1->d.abfd == e2->d.abfd); |
1107 | 0 | } |
1108 | | |
1109 | | /* Find or create an entry in a hash table HT that matches the key |
1110 | | fields of the given ENTRY. If it's not found, memory for a new |
1111 | | entry is allocated in ABFD's obstack. */ |
1112 | | static struct frvfdpic_relocs_info * |
1113 | | frvfdpic_relocs_info_find (struct htab *ht, |
1114 | | bfd *abfd, |
1115 | | const struct frvfdpic_relocs_info *entry, |
1116 | | enum insert_option insert) |
1117 | 0 | { |
1118 | 0 | struct frvfdpic_relocs_info **loc = |
1119 | 0 | (struct frvfdpic_relocs_info **) htab_find_slot (ht, entry, insert); |
1120 | |
|
1121 | 0 | if (! loc) |
1122 | 0 | return NULL; |
1123 | | |
1124 | 0 | if (*loc) |
1125 | 0 | return *loc; |
1126 | | |
1127 | 0 | *loc = bfd_zalloc (abfd, sizeof (**loc)); |
1128 | |
|
1129 | 0 | if (! *loc) |
1130 | 0 | return *loc; |
1131 | | |
1132 | 0 | (*loc)->symndx = entry->symndx; |
1133 | 0 | (*loc)->d = entry->d; |
1134 | 0 | (*loc)->addend = entry->addend; |
1135 | 0 | (*loc)->plt_entry = (bfd_vma)-1; |
1136 | 0 | (*loc)->lzplt_entry = (bfd_vma)-1; |
1137 | 0 | (*loc)->tlsplt_entry = (bfd_vma)-1; |
1138 | |
|
1139 | 0 | return *loc; |
1140 | 0 | } |
1141 | | |
1142 | | /* Obtain the address of the entry in HT associated with H's symbol + |
1143 | | addend, creating a new entry if none existed. ABFD is only used |
1144 | | for memory allocation purposes. */ |
1145 | | inline static struct frvfdpic_relocs_info * |
1146 | | frvfdpic_relocs_info_for_global (struct htab *ht, |
1147 | | bfd *abfd, |
1148 | | struct elf_link_hash_entry *h, |
1149 | | bfd_vma addend, |
1150 | | enum insert_option insert) |
1151 | 0 | { |
1152 | 0 | struct frvfdpic_relocs_info entry; |
1153 | |
|
1154 | 0 | entry.symndx = -1; |
1155 | 0 | entry.d.h = h; |
1156 | 0 | entry.addend = addend; |
1157 | |
|
1158 | 0 | return frvfdpic_relocs_info_find (ht, abfd, &entry, insert); |
1159 | 0 | } |
1160 | | |
1161 | | /* Obtain the address of the entry in HT associated with the SYMNDXth |
1162 | | local symbol of the input bfd ABFD, plus the addend, creating a new |
1163 | | entry if none existed. */ |
1164 | | inline static struct frvfdpic_relocs_info * |
1165 | | frvfdpic_relocs_info_for_local (struct htab *ht, |
1166 | | bfd *abfd, |
1167 | | long symndx, |
1168 | | bfd_vma addend, |
1169 | | enum insert_option insert) |
1170 | 0 | { |
1171 | 0 | struct frvfdpic_relocs_info entry; |
1172 | |
|
1173 | 0 | entry.symndx = symndx; |
1174 | 0 | entry.d.abfd = abfd; |
1175 | 0 | entry.addend = addend; |
1176 | |
|
1177 | 0 | return frvfdpic_relocs_info_find (ht, abfd, &entry, insert); |
1178 | 0 | } |
1179 | | |
1180 | | /* Merge fields set by check_relocs() of two entries that end up being |
1181 | | mapped to the same (presumably global) symbol. */ |
1182 | | |
1183 | | inline static void |
1184 | | frvfdpic_pic_merge_early_relocs_info (struct frvfdpic_relocs_info *e2, |
1185 | | struct frvfdpic_relocs_info const *e1) |
1186 | 0 | { |
1187 | 0 | e2->got12 |= e1->got12; |
1188 | 0 | e2->gotlos |= e1->gotlos; |
1189 | 0 | e2->gothilo |= e1->gothilo; |
1190 | 0 | e2->fd |= e1->fd; |
1191 | 0 | e2->fdgot12 |= e1->fdgot12; |
1192 | 0 | e2->fdgotlos |= e1->fdgotlos; |
1193 | 0 | e2->fdgothilo |= e1->fdgothilo; |
1194 | 0 | e2->fdgoff12 |= e1->fdgoff12; |
1195 | 0 | e2->fdgofflos |= e1->fdgofflos; |
1196 | 0 | e2->fdgoffhilo |= e1->fdgoffhilo; |
1197 | 0 | e2->tlsplt |= e1->tlsplt; |
1198 | 0 | e2->tlsdesc12 |= e1->tlsdesc12; |
1199 | 0 | e2->tlsdesclos |= e1->tlsdesclos; |
1200 | 0 | e2->tlsdeschilo |= e1->tlsdeschilo; |
1201 | 0 | e2->tlsoff12 |= e1->tlsoff12; |
1202 | 0 | e2->tlsofflos |= e1->tlsofflos; |
1203 | 0 | e2->tlsoffhilo |= e1->tlsoffhilo; |
1204 | 0 | e2->gotoff |= e1->gotoff; |
1205 | 0 | e2->call |= e1->call; |
1206 | 0 | e2->sym |= e1->sym; |
1207 | 0 | } |
1208 | | |
1209 | | /* Every block of 65535 lazy PLT entries shares a single call to the |
1210 | | resolver, inserted in the 32768th lazy PLT entry (i.e., entry # |
1211 | | 32767, counting from 0). All other lazy PLT entries branch to it |
1212 | | in a single instruction. */ |
1213 | | |
1214 | 0 | #define FRVFDPIC_LZPLT_BLOCK_SIZE ((bfd_vma) 8 * 65535 + 4) |
1215 | 0 | #define FRVFDPIC_LZPLT_RESOLV_LOC (8 * 32767) |
1216 | | |
1217 | | /* Add a dynamic relocation to the SRELOC section. */ |
1218 | | |
1219 | | inline static bfd_vma |
1220 | | _frvfdpic_add_dyn_reloc (bfd *output_bfd, asection *sreloc, bfd_vma offset, |
1221 | | int reloc_type, long dynindx, bfd_vma addend, |
1222 | | struct frvfdpic_relocs_info *entry) |
1223 | 0 | { |
1224 | 0 | Elf_Internal_Rela outrel; |
1225 | 0 | bfd_vma reloc_offset; |
1226 | |
|
1227 | 0 | outrel.r_offset = offset; |
1228 | 0 | outrel.r_info = ELF32_R_INFO (dynindx, reloc_type); |
1229 | 0 | outrel.r_addend = addend; |
1230 | |
|
1231 | 0 | reloc_offset = sreloc->reloc_count * sizeof (Elf32_External_Rel); |
1232 | 0 | BFD_ASSERT (reloc_offset < sreloc->size); |
1233 | 0 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, |
1234 | 0 | sreloc->contents + reloc_offset); |
1235 | 0 | sreloc->reloc_count++; |
1236 | | |
1237 | | /* If the entry's index is zero, this relocation was probably to a |
1238 | | linkonce section that got discarded. We reserved a dynamic |
1239 | | relocation, but it was for another entry than the one we got at |
1240 | | the time of emitting the relocation. Unfortunately there's no |
1241 | | simple way for us to catch this situation, since the relocation |
1242 | | is cleared right before calling relocate_section, at which point |
1243 | | we no longer know what the relocation used to point to. */ |
1244 | 0 | if (entry->symndx) |
1245 | 0 | { |
1246 | 0 | BFD_ASSERT (entry->dynrelocs > 0); |
1247 | 0 | entry->dynrelocs--; |
1248 | 0 | } |
1249 | |
|
1250 | 0 | return reloc_offset; |
1251 | 0 | } |
1252 | | |
1253 | | /* Add a fixup to the ROFIXUP section. */ |
1254 | | |
1255 | | static bfd_vma |
1256 | | _frvfdpic_add_rofixup (bfd *output_bfd, asection *rofixup, bfd_vma offset, |
1257 | | struct frvfdpic_relocs_info *entry) |
1258 | 0 | { |
1259 | 0 | bfd_vma fixup_offset; |
1260 | |
|
1261 | 0 | if (rofixup->flags & SEC_EXCLUDE) |
1262 | 0 | return -1; |
1263 | | |
1264 | 0 | fixup_offset = rofixup->reloc_count * 4; |
1265 | 0 | if (rofixup->contents) |
1266 | 0 | { |
1267 | 0 | BFD_ASSERT (fixup_offset < rofixup->size); |
1268 | 0 | bfd_put_32 (output_bfd, offset, rofixup->contents + fixup_offset); |
1269 | 0 | } |
1270 | 0 | rofixup->reloc_count++; |
1271 | |
|
1272 | 0 | if (entry && entry->symndx) |
1273 | 0 | { |
1274 | | /* See discussion about symndx == 0 in _frvfdpic_add_dyn_reloc |
1275 | | above. */ |
1276 | 0 | BFD_ASSERT (entry->fixups > 0); |
1277 | 0 | entry->fixups--; |
1278 | 0 | } |
1279 | |
|
1280 | 0 | return fixup_offset; |
1281 | 0 | } |
1282 | | |
1283 | | /* Find the segment number in which OSEC, and output section, is |
1284 | | located. */ |
1285 | | |
1286 | | static unsigned |
1287 | | _frvfdpic_osec_to_segment (bfd *output_bfd, asection *osec) |
1288 | 0 | { |
1289 | 0 | Elf_Internal_Phdr *p = _bfd_elf_find_segment_containing_section (output_bfd, osec); |
1290 | |
|
1291 | 0 | return (p != NULL) ? p - elf_tdata (output_bfd)->phdr : -1; |
1292 | 0 | } |
1293 | | |
1294 | | inline static bool |
1295 | | _frvfdpic_osec_readonly_p (bfd *output_bfd, asection *osec) |
1296 | 0 | { |
1297 | 0 | unsigned seg = _frvfdpic_osec_to_segment (output_bfd, osec); |
1298 | |
|
1299 | 0 | return ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W); |
1300 | 0 | } |
1301 | | |
1302 | 0 | #define FRVFDPIC_TLS_BIAS (2048 - 16) |
1303 | | |
1304 | | /* Return the base VMA address which should be subtracted from real addresses |
1305 | | when resolving TLSMOFF relocation. |
1306 | | This is PT_TLS segment p_vaddr, plus the 2048-16 bias. */ |
1307 | | |
1308 | | static bfd_vma |
1309 | | tls_biased_base (struct bfd_link_info *info) |
1310 | 0 | { |
1311 | | /* If tls_sec is NULL, we should have signalled an error already. */ |
1312 | 0 | if (elf_hash_table (info)->tls_sec == NULL) |
1313 | 0 | return FRVFDPIC_TLS_BIAS; |
1314 | 0 | return elf_hash_table (info)->tls_sec->vma + FRVFDPIC_TLS_BIAS; |
1315 | 0 | } |
1316 | | |
1317 | | /* Generate relocations for GOT entries, function descriptors, and |
1318 | | code for PLT and lazy PLT entries. */ |
1319 | | |
1320 | | inline static bool |
1321 | | _frvfdpic_emit_got_relocs_plt_entries (struct frvfdpic_relocs_info *entry, |
1322 | | bfd *output_bfd, |
1323 | | struct bfd_link_info *info, |
1324 | | asection *sec, |
1325 | | Elf_Internal_Sym *sym, |
1326 | | bfd_vma addend) |
1327 | | |
1328 | 0 | { |
1329 | 0 | bfd_vma fd_lazy_rel_offset = (bfd_vma)-1; |
1330 | 0 | int dynindx = -1; |
1331 | |
|
1332 | 0 | if (entry->done) |
1333 | 0 | return true; |
1334 | 0 | entry->done = 1; |
1335 | |
|
1336 | 0 | if (entry->got_entry || entry->fdgot_entry || entry->fd_entry |
1337 | 0 | || entry->tlsoff_entry || entry->tlsdesc_entry) |
1338 | 0 | { |
1339 | | /* If the symbol is dynamic, consider it for dynamic |
1340 | | relocations, otherwise decay to section + offset. */ |
1341 | 0 | if (entry->symndx == -1 && entry->d.h->dynindx != -1) |
1342 | 0 | dynindx = entry->d.h->dynindx; |
1343 | 0 | else |
1344 | 0 | { |
1345 | 0 | if (sec |
1346 | 0 | && sec->output_section |
1347 | 0 | && ! bfd_is_abs_section (sec->output_section) |
1348 | 0 | && ! bfd_is_und_section (sec->output_section)) |
1349 | 0 | dynindx = elf_section_data (sec->output_section)->dynindx; |
1350 | 0 | else |
1351 | 0 | dynindx = 0; |
1352 | 0 | } |
1353 | 0 | } |
1354 | | |
1355 | | /* Generate relocation for GOT entry pointing to the symbol. */ |
1356 | 0 | if (entry->got_entry) |
1357 | 0 | { |
1358 | 0 | int idx = dynindx; |
1359 | 0 | bfd_vma ad = addend; |
1360 | | |
1361 | | /* If the symbol is dynamic but binds locally, use |
1362 | | section+offset. */ |
1363 | 0 | if (sec && (entry->symndx != -1 |
1364 | 0 | || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) |
1365 | 0 | { |
1366 | 0 | if (entry->symndx == -1) |
1367 | 0 | ad += entry->d.h->root.u.def.value; |
1368 | 0 | else |
1369 | 0 | ad += sym->st_value; |
1370 | 0 | ad += sec->output_offset; |
1371 | 0 | if (sec->output_section && elf_section_data (sec->output_section)) |
1372 | 0 | idx = elf_section_data (sec->output_section)->dynindx; |
1373 | 0 | else |
1374 | 0 | idx = 0; |
1375 | 0 | } |
1376 | | |
1377 | | /* If we're linking an executable at a fixed address, we can |
1378 | | omit the dynamic relocation as long as the symbol is local to |
1379 | | this module. */ |
1380 | 0 | if (bfd_link_pde (info) |
1381 | 0 | && (entry->symndx != -1 |
1382 | 0 | || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) |
1383 | 0 | { |
1384 | 0 | if (sec) |
1385 | 0 | ad += sec->output_section->vma; |
1386 | 0 | if (entry->symndx != -1 |
1387 | 0 | || entry->d.h->root.type != bfd_link_hash_undefweak) |
1388 | 0 | _frvfdpic_add_rofixup (output_bfd, |
1389 | 0 | frvfdpic_gotfixup_section (info), |
1390 | 0 | frvfdpic_got_section (info)->output_section |
1391 | 0 | ->vma |
1392 | 0 | + frvfdpic_got_section (info)->output_offset |
1393 | 0 | + frvfdpic_got_initial_offset (info) |
1394 | 0 | + entry->got_entry, entry); |
1395 | 0 | } |
1396 | 0 | else |
1397 | 0 | _frvfdpic_add_dyn_reloc (output_bfd, frvfdpic_gotrel_section (info), |
1398 | 0 | _bfd_elf_section_offset |
1399 | 0 | (output_bfd, info, |
1400 | 0 | frvfdpic_got_section (info), |
1401 | 0 | frvfdpic_got_initial_offset (info) |
1402 | 0 | + entry->got_entry) |
1403 | 0 | + frvfdpic_got_section (info) |
1404 | 0 | ->output_section->vma |
1405 | 0 | + frvfdpic_got_section (info)->output_offset, |
1406 | 0 | R_FRV_32, idx, ad, entry); |
1407 | |
|
1408 | 0 | bfd_put_32 (output_bfd, ad, |
1409 | 0 | frvfdpic_got_section (info)->contents |
1410 | 0 | + frvfdpic_got_initial_offset (info) |
1411 | 0 | + entry->got_entry); |
1412 | 0 | } |
1413 | | |
1414 | | /* Generate relocation for GOT entry pointing to a canonical |
1415 | | function descriptor. */ |
1416 | 0 | if (entry->fdgot_entry) |
1417 | 0 | { |
1418 | 0 | int reloc, idx; |
1419 | 0 | bfd_vma ad = 0; |
1420 | |
|
1421 | 0 | if (! (entry->symndx == -1 |
1422 | 0 | && entry->d.h->root.type == bfd_link_hash_undefweak |
1423 | 0 | && FRVFDPIC_SYM_LOCAL (info, entry->d.h))) |
1424 | 0 | { |
1425 | | /* If the symbol is dynamic and there may be dynamic symbol |
1426 | | resolution because we are, or are linked with, a shared |
1427 | | library, emit a FUNCDESC relocation such that the dynamic |
1428 | | linker will allocate the function descriptor. If the |
1429 | | symbol needs a non-local function descriptor but binds |
1430 | | locally (e.g., its visibility is protected, emit a |
1431 | | dynamic relocation decayed to section+offset. */ |
1432 | 0 | if (entry->symndx == -1 |
1433 | 0 | && ! FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h) |
1434 | 0 | && FRVFDPIC_SYM_LOCAL (info, entry->d.h) |
1435 | 0 | && !bfd_link_pde (info)) |
1436 | 0 | { |
1437 | 0 | reloc = R_FRV_FUNCDESC; |
1438 | 0 | idx = elf_section_data (entry->d.h->root.u.def.section |
1439 | 0 | ->output_section)->dynindx; |
1440 | 0 | ad = entry->d.h->root.u.def.section->output_offset |
1441 | 0 | + entry->d.h->root.u.def.value; |
1442 | 0 | } |
1443 | 0 | else if (entry->symndx == -1 |
1444 | 0 | && ! FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h)) |
1445 | 0 | { |
1446 | 0 | reloc = R_FRV_FUNCDESC; |
1447 | 0 | idx = dynindx; |
1448 | 0 | ad = addend; |
1449 | 0 | if (ad) |
1450 | 0 | { |
1451 | 0 | (*info->callbacks->reloc_dangerous) |
1452 | 0 | (info, _("relocation requires zero addend"), |
1453 | 0 | elf_hash_table (info)->dynobj, |
1454 | 0 | frvfdpic_got_section (info), |
1455 | 0 | entry->fdgot_entry); |
1456 | 0 | return false; |
1457 | 0 | } |
1458 | 0 | } |
1459 | 0 | else |
1460 | 0 | { |
1461 | | /* Otherwise, we know we have a private function descriptor, |
1462 | | so reference it directly. */ |
1463 | 0 | if (elf_hash_table (info)->dynamic_sections_created) |
1464 | 0 | BFD_ASSERT (entry->privfd); |
1465 | 0 | reloc = R_FRV_32; |
1466 | 0 | idx = elf_section_data (frvfdpic_got_section (info) |
1467 | 0 | ->output_section)->dynindx; |
1468 | 0 | ad = frvfdpic_got_section (info)->output_offset |
1469 | 0 | + frvfdpic_got_initial_offset (info) + entry->fd_entry; |
1470 | 0 | } |
1471 | | |
1472 | | /* If there is room for dynamic symbol resolution, emit the |
1473 | | dynamic relocation. However, if we're linking an |
1474 | | executable at a fixed location, we won't have emitted a |
1475 | | dynamic symbol entry for the got section, so idx will be |
1476 | | zero, which means we can and should compute the address |
1477 | | of the private descriptor ourselves. */ |
1478 | 0 | if (bfd_link_pde (info) |
1479 | 0 | && (entry->symndx != -1 |
1480 | 0 | || FRVFDPIC_FUNCDESC_LOCAL (info, entry->d.h))) |
1481 | 0 | { |
1482 | 0 | ad += frvfdpic_got_section (info)->output_section->vma; |
1483 | 0 | _frvfdpic_add_rofixup (output_bfd, |
1484 | 0 | frvfdpic_gotfixup_section (info), |
1485 | 0 | frvfdpic_got_section (info) |
1486 | 0 | ->output_section->vma |
1487 | 0 | + frvfdpic_got_section (info) |
1488 | 0 | ->output_offset |
1489 | 0 | + frvfdpic_got_initial_offset (info) |
1490 | 0 | + entry->fdgot_entry, entry); |
1491 | 0 | } |
1492 | 0 | else |
1493 | 0 | _frvfdpic_add_dyn_reloc (output_bfd, |
1494 | 0 | frvfdpic_gotrel_section (info), |
1495 | 0 | _bfd_elf_section_offset |
1496 | 0 | (output_bfd, info, |
1497 | 0 | frvfdpic_got_section (info), |
1498 | 0 | frvfdpic_got_initial_offset (info) |
1499 | 0 | + entry->fdgot_entry) |
1500 | 0 | + frvfdpic_got_section (info) |
1501 | 0 | ->output_section->vma |
1502 | 0 | + frvfdpic_got_section (info) |
1503 | 0 | ->output_offset, |
1504 | 0 | reloc, idx, ad, entry); |
1505 | 0 | } |
1506 | | |
1507 | 0 | bfd_put_32 (output_bfd, ad, |
1508 | 0 | frvfdpic_got_section (info)->contents |
1509 | 0 | + frvfdpic_got_initial_offset (info) |
1510 | 0 | + entry->fdgot_entry); |
1511 | 0 | } |
1512 | | |
1513 | | /* Generate relocation to fill in a private function descriptor in |
1514 | | the GOT. */ |
1515 | 0 | if (entry->fd_entry) |
1516 | 0 | { |
1517 | 0 | int idx = dynindx; |
1518 | 0 | bfd_vma ad = addend; |
1519 | 0 | bfd_vma ofst; |
1520 | 0 | long lowword, highword; |
1521 | | |
1522 | | /* If the symbol is dynamic but binds locally, use |
1523 | | section+offset. */ |
1524 | 0 | if (sec && (entry->symndx != -1 |
1525 | 0 | || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) |
1526 | 0 | { |
1527 | 0 | if (entry->symndx == -1) |
1528 | 0 | ad += entry->d.h->root.u.def.value; |
1529 | 0 | else |
1530 | 0 | ad += sym->st_value; |
1531 | 0 | ad += sec->output_offset; |
1532 | 0 | if (sec->output_section && elf_section_data (sec->output_section)) |
1533 | 0 | idx = elf_section_data (sec->output_section)->dynindx; |
1534 | 0 | else |
1535 | 0 | idx = 0; |
1536 | 0 | } |
1537 | | |
1538 | | /* If we're linking an executable at a fixed address, we can |
1539 | | omit the dynamic relocation as long as the symbol is local to |
1540 | | this module. */ |
1541 | 0 | if (bfd_link_pde (info) |
1542 | 0 | && (entry->symndx != -1 || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) |
1543 | 0 | { |
1544 | 0 | if (sec) |
1545 | 0 | ad += sec->output_section->vma; |
1546 | 0 | ofst = 0; |
1547 | 0 | if (entry->symndx != -1 |
1548 | 0 | || entry->d.h->root.type != bfd_link_hash_undefweak) |
1549 | 0 | { |
1550 | 0 | _frvfdpic_add_rofixup (output_bfd, |
1551 | 0 | frvfdpic_gotfixup_section (info), |
1552 | 0 | frvfdpic_got_section (info) |
1553 | 0 | ->output_section->vma |
1554 | 0 | + frvfdpic_got_section (info) |
1555 | 0 | ->output_offset |
1556 | 0 | + frvfdpic_got_initial_offset (info) |
1557 | 0 | + entry->fd_entry, entry); |
1558 | 0 | _frvfdpic_add_rofixup (output_bfd, |
1559 | 0 | frvfdpic_gotfixup_section (info), |
1560 | 0 | frvfdpic_got_section (info) |
1561 | 0 | ->output_section->vma |
1562 | 0 | + frvfdpic_got_section (info) |
1563 | 0 | ->output_offset |
1564 | 0 | + frvfdpic_got_initial_offset (info) |
1565 | 0 | + entry->fd_entry + 4, entry); |
1566 | 0 | } |
1567 | 0 | } |
1568 | 0 | else |
1569 | 0 | { |
1570 | 0 | ofst = |
1571 | 0 | _frvfdpic_add_dyn_reloc (output_bfd, |
1572 | 0 | entry->lazyplt |
1573 | 0 | ? frvfdpic_pltrel_section (info) |
1574 | 0 | : frvfdpic_gotrel_section (info), |
1575 | 0 | _bfd_elf_section_offset |
1576 | 0 | (output_bfd, info, |
1577 | 0 | frvfdpic_got_section (info), |
1578 | 0 | frvfdpic_got_initial_offset (info) |
1579 | 0 | + entry->fd_entry) |
1580 | 0 | + frvfdpic_got_section (info) |
1581 | 0 | ->output_section->vma |
1582 | 0 | + frvfdpic_got_section (info) |
1583 | 0 | ->output_offset, |
1584 | 0 | R_FRV_FUNCDESC_VALUE, idx, ad, entry); |
1585 | 0 | } |
1586 | | |
1587 | | /* If we've omitted the dynamic relocation, just emit the fixed |
1588 | | addresses of the symbol and of the local GOT base offset. */ |
1589 | 0 | if (bfd_link_pde (info) |
1590 | 0 | && sec |
1591 | 0 | && sec->output_section) |
1592 | 0 | { |
1593 | 0 | lowword = ad; |
1594 | 0 | highword = frvfdpic_got_section (info)->output_section->vma |
1595 | 0 | + frvfdpic_got_section (info)->output_offset |
1596 | 0 | + frvfdpic_got_initial_offset (info); |
1597 | 0 | } |
1598 | 0 | else if (entry->lazyplt) |
1599 | 0 | { |
1600 | 0 | if (ad) |
1601 | 0 | { |
1602 | 0 | (*info->callbacks->reloc_dangerous) |
1603 | 0 | (info, _("relocation requires zero addend"), |
1604 | 0 | elf_hash_table (info)->dynobj, |
1605 | 0 | frvfdpic_got_section (info), |
1606 | 0 | entry->fd_entry); |
1607 | 0 | return false; |
1608 | 0 | } |
1609 | | |
1610 | 0 | fd_lazy_rel_offset = ofst; |
1611 | | |
1612 | | /* A function descriptor used for lazy or local resolving is |
1613 | | initialized such that its high word contains the output |
1614 | | section index in which the PLT entries are located, and |
1615 | | the low word contains the address of the lazy PLT entry |
1616 | | entry point, that must be within the memory region |
1617 | | assigned to that section. */ |
1618 | 0 | lowword = entry->lzplt_entry + 4 |
1619 | 0 | + frvfdpic_plt_section (info)->output_offset |
1620 | 0 | + frvfdpic_plt_section (info)->output_section->vma; |
1621 | 0 | highword = _frvfdpic_osec_to_segment |
1622 | 0 | (output_bfd, frvfdpic_plt_section (info)->output_section); |
1623 | 0 | } |
1624 | 0 | else |
1625 | 0 | { |
1626 | | /* A function descriptor for a local function gets the index |
1627 | | of the section. For a non-local function, it's |
1628 | | disregarded. */ |
1629 | 0 | lowword = ad; |
1630 | 0 | if (sec == NULL |
1631 | 0 | || (entry->symndx == -1 && entry->d.h->dynindx != -1 |
1632 | 0 | && entry->d.h->dynindx == idx)) |
1633 | 0 | highword = 0; |
1634 | 0 | else |
1635 | 0 | highword = _frvfdpic_osec_to_segment |
1636 | 0 | (output_bfd, sec->output_section); |
1637 | 0 | } |
1638 | | |
1639 | 0 | bfd_put_32 (output_bfd, lowword, |
1640 | 0 | frvfdpic_got_section (info)->contents |
1641 | 0 | + frvfdpic_got_initial_offset (info) |
1642 | 0 | + entry->fd_entry); |
1643 | 0 | bfd_put_32 (output_bfd, highword, |
1644 | 0 | frvfdpic_got_section (info)->contents |
1645 | 0 | + frvfdpic_got_initial_offset (info) |
1646 | 0 | + entry->fd_entry + 4); |
1647 | 0 | } |
1648 | | |
1649 | | /* Generate code for the PLT entry. */ |
1650 | 0 | if (entry->plt_entry != (bfd_vma) -1) |
1651 | 0 | { |
1652 | 0 | bfd_byte *plt_code = frvfdpic_plt_section (info)->contents |
1653 | 0 | + entry->plt_entry; |
1654 | |
|
1655 | 0 | BFD_ASSERT (entry->fd_entry); |
1656 | | |
1657 | | /* Figure out what kind of PLT entry we need, depending on the |
1658 | | location of the function descriptor within the GOT. */ |
1659 | 0 | if (entry->fd_entry >= -(1 << (12 - 1)) |
1660 | 0 | && entry->fd_entry < (1 << (12 - 1))) |
1661 | 0 | { |
1662 | | /* lddi @(gr15, fd_entry), gr14 */ |
1663 | 0 | bfd_put_32 (output_bfd, |
1664 | 0 | 0x9cccf000 | (entry->fd_entry & ((1 << 12) - 1)), |
1665 | 0 | plt_code); |
1666 | 0 | plt_code += 4; |
1667 | 0 | } |
1668 | 0 | else |
1669 | 0 | { |
1670 | 0 | if (entry->fd_entry >= -(1 << (16 - 1)) |
1671 | 0 | && entry->fd_entry < (1 << (16 - 1))) |
1672 | 0 | { |
1673 | | /* setlos lo(fd_entry), gr14 */ |
1674 | 0 | bfd_put_32 (output_bfd, |
1675 | 0 | 0x9cfc0000 |
1676 | 0 | | (entry->fd_entry & (((bfd_vma)1 << 16) - 1)), |
1677 | 0 | plt_code); |
1678 | 0 | plt_code += 4; |
1679 | 0 | } |
1680 | 0 | else |
1681 | 0 | { |
1682 | | /* sethi.p hi(fd_entry), gr14 |
1683 | | setlo lo(fd_entry), gr14 */ |
1684 | 0 | bfd_put_32 (output_bfd, |
1685 | 0 | 0x1cf80000 |
1686 | 0 | | ((entry->fd_entry >> 16) |
1687 | 0 | & (((bfd_vma)1 << 16) - 1)), |
1688 | 0 | plt_code); |
1689 | 0 | plt_code += 4; |
1690 | 0 | bfd_put_32 (output_bfd, |
1691 | 0 | 0x9cf40000 |
1692 | 0 | | (entry->fd_entry & (((bfd_vma)1 << 16) - 1)), |
1693 | 0 | plt_code); |
1694 | 0 | plt_code += 4; |
1695 | 0 | } |
1696 | | /* ldd @(gr14,gr15),gr14 */ |
1697 | 0 | bfd_put_32 (output_bfd, 0x9c08e14f, plt_code); |
1698 | 0 | plt_code += 4; |
1699 | 0 | } |
1700 | | /* jmpl @(gr14,gr0) */ |
1701 | 0 | bfd_put_32 (output_bfd, 0x8030e000, plt_code); |
1702 | 0 | } |
1703 | | |
1704 | | /* Generate code for the lazy PLT entry. */ |
1705 | 0 | if (entry->lzplt_entry != (bfd_vma) -1) |
1706 | 0 | { |
1707 | 0 | bfd_byte *lzplt_code = frvfdpic_plt_section (info)->contents |
1708 | 0 | + entry->lzplt_entry; |
1709 | 0 | bfd_vma resolverStub_addr; |
1710 | |
|
1711 | 0 | bfd_put_32 (output_bfd, fd_lazy_rel_offset, lzplt_code); |
1712 | 0 | lzplt_code += 4; |
1713 | |
|
1714 | 0 | resolverStub_addr = entry->lzplt_entry / FRVFDPIC_LZPLT_BLOCK_SIZE |
1715 | 0 | * FRVFDPIC_LZPLT_BLOCK_SIZE + FRVFDPIC_LZPLT_RESOLV_LOC; |
1716 | 0 | if (resolverStub_addr >= frvfdpic_plt_initial_offset (info)) |
1717 | 0 | resolverStub_addr = frvfdpic_plt_initial_offset (info) - 12; |
1718 | |
|
1719 | 0 | if (entry->lzplt_entry == resolverStub_addr) |
1720 | 0 | { |
1721 | | /* This is a lazy PLT entry that includes a resolver call. */ |
1722 | | /* ldd @(gr15,gr0), gr4 |
1723 | | jmpl @(gr4,gr0) */ |
1724 | 0 | bfd_put_32 (output_bfd, 0x8808f140, lzplt_code); |
1725 | 0 | bfd_put_32 (output_bfd, 0x80304000, lzplt_code + 4); |
1726 | 0 | } |
1727 | 0 | else |
1728 | 0 | { |
1729 | | /* bra resolverStub */ |
1730 | 0 | bfd_put_32 (output_bfd, |
1731 | 0 | 0xc01a0000 |
1732 | 0 | | (((resolverStub_addr - entry->lzplt_entry) |
1733 | 0 | / 4) & (((bfd_vma)1 << 16) - 1)), |
1734 | 0 | lzplt_code); |
1735 | 0 | } |
1736 | 0 | } |
1737 | | |
1738 | | /* Generate relocation for GOT entry holding the TLS offset. */ |
1739 | 0 | if (entry->tlsoff_entry) |
1740 | 0 | { |
1741 | 0 | int idx = dynindx; |
1742 | 0 | bfd_vma ad = addend; |
1743 | |
|
1744 | 0 | if (entry->symndx != -1 |
1745 | 0 | || FRVFDPIC_SYM_LOCAL (info, entry->d.h)) |
1746 | 0 | { |
1747 | | /* If the symbol is dynamic but binds locally, use |
1748 | | section+offset. */ |
1749 | 0 | if (sec) |
1750 | 0 | { |
1751 | 0 | if (entry->symndx == -1) |
1752 | 0 | ad += entry->d.h->root.u.def.value; |
1753 | 0 | else |
1754 | 0 | ad += sym->st_value; |
1755 | 0 | ad += sec->output_offset; |
1756 | 0 | if (sec->output_section |
1757 | 0 | && elf_section_data (sec->output_section)) |
1758 | 0 | idx = elf_section_data (sec->output_section)->dynindx; |
1759 | 0 | else |
1760 | 0 | idx = 0; |
1761 | 0 | } |
1762 | 0 | } |
1763 | | |
1764 | | /* *ABS*+addend is special for TLS relocations, use only the |
1765 | | addend. */ |
1766 | 0 | if (bfd_link_executable (info) |
1767 | 0 | && idx == 0 |
1768 | 0 | && (bfd_is_abs_section (sec) |
1769 | 0 | || bfd_is_und_section (sec))) |
1770 | 0 | ; |
1771 | | /* If we're linking an executable, we can entirely omit the |
1772 | | dynamic relocation if the symbol is local to this module. */ |
1773 | 0 | else if (bfd_link_executable (info) |
1774 | 0 | && (entry->symndx != -1 |
1775 | 0 | || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) |
1776 | 0 | { |
1777 | 0 | if (sec) |
1778 | 0 | ad += sec->output_section->vma - tls_biased_base (info); |
1779 | 0 | } |
1780 | 0 | else |
1781 | 0 | { |
1782 | 0 | if (idx == 0 |
1783 | 0 | && (bfd_is_abs_section (sec) |
1784 | 0 | || bfd_is_und_section (sec))) |
1785 | 0 | { |
1786 | 0 | if (! elf_hash_table (info)->tls_sec) |
1787 | 0 | { |
1788 | 0 | (*info->callbacks->undefined_symbol) |
1789 | 0 | (info, "TLS section", elf_hash_table (info)->dynobj, |
1790 | 0 | frvfdpic_got_section (info), entry->tlsoff_entry, true); |
1791 | 0 | return false; |
1792 | 0 | } |
1793 | 0 | idx = elf_section_data (elf_hash_table (info)->tls_sec)->dynindx; |
1794 | 0 | ad += FRVFDPIC_TLS_BIAS; |
1795 | 0 | } |
1796 | 0 | _frvfdpic_add_dyn_reloc (output_bfd, frvfdpic_gotrel_section (info), |
1797 | 0 | _bfd_elf_section_offset |
1798 | 0 | (output_bfd, info, |
1799 | 0 | frvfdpic_got_section (info), |
1800 | 0 | frvfdpic_got_initial_offset (info) |
1801 | 0 | + entry->tlsoff_entry) |
1802 | 0 | + frvfdpic_got_section (info) |
1803 | 0 | ->output_section->vma |
1804 | 0 | + frvfdpic_got_section (info) |
1805 | 0 | ->output_offset, |
1806 | 0 | R_FRV_TLSOFF, idx, ad, entry); |
1807 | 0 | } |
1808 | | |
1809 | 0 | bfd_put_32 (output_bfd, ad, |
1810 | 0 | frvfdpic_got_section (info)->contents |
1811 | 0 | + frvfdpic_got_initial_offset (info) |
1812 | 0 | + entry->tlsoff_entry); |
1813 | 0 | } |
1814 | | |
1815 | 0 | if (entry->tlsdesc_entry) |
1816 | 0 | { |
1817 | 0 | int idx = dynindx; |
1818 | 0 | bfd_vma ad = addend; |
1819 | | |
1820 | | /* If the symbol is dynamic but binds locally, use |
1821 | | section+offset. */ |
1822 | 0 | if (sec && (entry->symndx != -1 |
1823 | 0 | || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) |
1824 | 0 | { |
1825 | 0 | if (entry->symndx == -1) |
1826 | 0 | ad += entry->d.h->root.u.def.value; |
1827 | 0 | else |
1828 | 0 | ad += sym->st_value; |
1829 | 0 | ad += sec->output_offset; |
1830 | 0 | if (sec->output_section && elf_section_data (sec->output_section)) |
1831 | 0 | idx = elf_section_data (sec->output_section)->dynindx; |
1832 | 0 | else |
1833 | 0 | idx = 0; |
1834 | 0 | } |
1835 | | |
1836 | | /* If we didn't set up a TLS offset entry, but we're linking an |
1837 | | executable and the symbol binds locally, we can use the |
1838 | | module offset in the TLS descriptor in relaxations. */ |
1839 | 0 | if (bfd_link_executable (info) && ! entry->tlsoff_entry) |
1840 | 0 | entry->tlsoff_entry = entry->tlsdesc_entry + 4; |
1841 | |
|
1842 | 0 | if (bfd_link_pde (info) |
1843 | 0 | && ((idx == 0 |
1844 | 0 | && (bfd_is_abs_section (sec) |
1845 | 0 | || bfd_is_und_section (sec))) |
1846 | 0 | || entry->symndx != -1 |
1847 | 0 | || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) |
1848 | 0 | { |
1849 | | /* *ABS*+addend is special for TLS relocations, use only the |
1850 | | addend for the TLS offset, and take the module id as |
1851 | | 0. */ |
1852 | 0 | if (idx == 0 |
1853 | 0 | && (bfd_is_abs_section (sec) |
1854 | 0 | || bfd_is_und_section (sec))) |
1855 | 0 | ; |
1856 | | /* For other TLS symbols that bind locally, add the section |
1857 | | TLS offset to the addend. */ |
1858 | 0 | else if (sec) |
1859 | 0 | ad += sec->output_section->vma - tls_biased_base (info); |
1860 | |
|
1861 | 0 | bfd_put_32 (output_bfd, |
1862 | 0 | frvfdpic_plt_section (info)->output_section->vma |
1863 | 0 | + frvfdpic_plt_section (info)->output_offset |
1864 | 0 | + frvfdpic_plt_tls_ret_offset (info), |
1865 | 0 | frvfdpic_got_section (info)->contents |
1866 | 0 | + frvfdpic_got_initial_offset (info) |
1867 | 0 | + entry->tlsdesc_entry); |
1868 | |
|
1869 | 0 | _frvfdpic_add_rofixup (output_bfd, |
1870 | 0 | frvfdpic_gotfixup_section (info), |
1871 | 0 | frvfdpic_got_section (info) |
1872 | 0 | ->output_section->vma |
1873 | 0 | + frvfdpic_got_section (info) |
1874 | 0 | ->output_offset |
1875 | 0 | + frvfdpic_got_initial_offset (info) |
1876 | 0 | + entry->tlsdesc_entry, entry); |
1877 | |
|
1878 | 0 | BFD_ASSERT (frvfdpic_dynamic_got_plt_info (info)->tls_ret_refs); |
1879 | | |
1880 | | /* We've used one of the reserved fixups, so discount it so |
1881 | | that we can check at the end that we've used them |
1882 | | all. */ |
1883 | 0 | frvfdpic_dynamic_got_plt_info (info)->tls_ret_refs--; |
1884 | | |
1885 | | /* While at that, make sure the ret instruction makes to the |
1886 | | right location in the PLT. We could do it only when we |
1887 | | got to 0, but since the check at the end will only print |
1888 | | a warning, make sure we have the ret in place in case the |
1889 | | warning is missed. */ |
1890 | 0 | bfd_put_32 (output_bfd, 0xc03a4000, |
1891 | 0 | frvfdpic_plt_section (info)->contents |
1892 | 0 | + frvfdpic_plt_tls_ret_offset (info)); |
1893 | 0 | } |
1894 | 0 | else |
1895 | 0 | { |
1896 | 0 | if (idx == 0 |
1897 | 0 | && (bfd_is_abs_section (sec) |
1898 | 0 | || bfd_is_und_section (sec))) |
1899 | 0 | { |
1900 | 0 | if (! elf_hash_table (info)->tls_sec) |
1901 | 0 | { |
1902 | 0 | (*info->callbacks->undefined_symbol) |
1903 | 0 | (info, "TLS section", elf_hash_table (info)->dynobj, |
1904 | 0 | frvfdpic_got_section (info), entry->tlsdesc_entry, true); |
1905 | 0 | return false; |
1906 | 0 | } |
1907 | 0 | idx = elf_section_data (elf_hash_table (info)->tls_sec)->dynindx; |
1908 | 0 | ad += FRVFDPIC_TLS_BIAS; |
1909 | 0 | } |
1910 | | |
1911 | 0 | _frvfdpic_add_dyn_reloc (output_bfd, frvfdpic_gotrel_section (info), |
1912 | 0 | _bfd_elf_section_offset |
1913 | 0 | (output_bfd, info, |
1914 | 0 | frvfdpic_got_section (info), |
1915 | 0 | frvfdpic_got_initial_offset (info) |
1916 | 0 | + entry->tlsdesc_entry) |
1917 | 0 | + frvfdpic_got_section (info) |
1918 | 0 | ->output_section->vma |
1919 | 0 | + frvfdpic_got_section (info) |
1920 | 0 | ->output_offset, |
1921 | 0 | R_FRV_TLSDESC_VALUE, idx, ad, entry); |
1922 | |
|
1923 | 0 | bfd_put_32 (output_bfd, 0, |
1924 | 0 | frvfdpic_got_section (info)->contents |
1925 | 0 | + frvfdpic_got_initial_offset (info) |
1926 | 0 | + entry->tlsdesc_entry); |
1927 | 0 | } |
1928 | | |
1929 | 0 | bfd_put_32 (output_bfd, ad, |
1930 | 0 | frvfdpic_got_section (info)->contents |
1931 | 0 | + frvfdpic_got_initial_offset (info) |
1932 | 0 | + entry->tlsdesc_entry + 4); |
1933 | 0 | } |
1934 | | |
1935 | | /* Generate code for the get-TLS-offset PLT entry. */ |
1936 | 0 | if (entry->tlsplt_entry != (bfd_vma) -1) |
1937 | 0 | { |
1938 | 0 | bfd_byte *plt_code = frvfdpic_plt_section (info)->contents |
1939 | 0 | + entry->tlsplt_entry; |
1940 | |
|
1941 | 0 | if (bfd_link_executable (info) |
1942 | 0 | && (entry->symndx != -1 |
1943 | 0 | || FRVFDPIC_SYM_LOCAL (info, entry->d.h))) |
1944 | 0 | { |
1945 | 0 | int idx = dynindx; |
1946 | 0 | bfd_vma ad = addend; |
1947 | | |
1948 | | /* sec may be NULL when referencing an undefweak symbol |
1949 | | while linking a static executable. */ |
1950 | 0 | if (!sec) |
1951 | 0 | { |
1952 | 0 | BFD_ASSERT (entry->symndx == -1 |
1953 | 0 | && entry->d.h->root.type == bfd_link_hash_undefweak); |
1954 | 0 | } |
1955 | 0 | else |
1956 | 0 | { |
1957 | 0 | if (entry->symndx == -1) |
1958 | 0 | ad += entry->d.h->root.u.def.value; |
1959 | 0 | else |
1960 | 0 | ad += sym->st_value; |
1961 | 0 | ad += sec->output_offset; |
1962 | 0 | if (sec->output_section |
1963 | 0 | && elf_section_data (sec->output_section)) |
1964 | 0 | idx = elf_section_data (sec->output_section)->dynindx; |
1965 | 0 | else |
1966 | 0 | idx = 0; |
1967 | 0 | } |
1968 | | |
1969 | | /* *ABS*+addend is special for TLS relocations, use only the |
1970 | | addend for the TLS offset, and take the module id as |
1971 | | 0. */ |
1972 | 0 | if (idx == 0 |
1973 | 0 | && (bfd_is_abs_section (sec) |
1974 | 0 | || bfd_is_und_section (sec))) |
1975 | 0 | ; |
1976 | | /* For other TLS symbols that bind locally, add the section |
1977 | | TLS offset to the addend. */ |
1978 | 0 | else if (sec) |
1979 | 0 | ad += sec->output_section->vma - tls_biased_base (info); |
1980 | |
|
1981 | 0 | if ((bfd_signed_vma)ad >= -(1 << (16 - 1)) |
1982 | 0 | && (bfd_signed_vma)ad < (1 << (16 - 1))) |
1983 | 0 | { |
1984 | | /* setlos lo(ad), gr9 */ |
1985 | 0 | bfd_put_32 (output_bfd, |
1986 | 0 | 0x92fc0000 |
1987 | 0 | | (ad |
1988 | 0 | & (((bfd_vma)1 << 16) - 1)), |
1989 | 0 | plt_code); |
1990 | 0 | plt_code += 4; |
1991 | 0 | } |
1992 | 0 | else |
1993 | 0 | { |
1994 | | /* sethi.p hi(ad), gr9 |
1995 | | setlo lo(ad), gr9 */ |
1996 | 0 | bfd_put_32 (output_bfd, |
1997 | 0 | 0x12f80000 |
1998 | 0 | | ((ad >> 16) |
1999 | 0 | & (((bfd_vma)1 << 16) - 1)), |
2000 | 0 | plt_code); |
2001 | 0 | plt_code += 4; |
2002 | 0 | bfd_put_32 (output_bfd, |
2003 | 0 | 0x92f40000 |
2004 | 0 | | (ad |
2005 | 0 | & (((bfd_vma)1 << 16) - 1)), |
2006 | 0 | plt_code); |
2007 | 0 | plt_code += 4; |
2008 | 0 | } |
2009 | | /* ret */ |
2010 | 0 | bfd_put_32 (output_bfd, 0xc03a4000, plt_code); |
2011 | 0 | } |
2012 | 0 | else if (entry->tlsoff_entry) |
2013 | 0 | { |
2014 | | /* Figure out what kind of PLT entry we need, depending on the |
2015 | | location of the TLS descriptor within the GOT. */ |
2016 | 0 | if (entry->tlsoff_entry >= -(1 << (12 - 1)) |
2017 | 0 | && entry->tlsoff_entry < (1 << (12 - 1))) |
2018 | 0 | { |
2019 | | /* ldi @(gr15, tlsoff_entry), gr9 */ |
2020 | 0 | bfd_put_32 (output_bfd, |
2021 | 0 | 0x92c8f000 | (entry->tlsoff_entry |
2022 | 0 | & ((1 << 12) - 1)), |
2023 | 0 | plt_code); |
2024 | 0 | plt_code += 4; |
2025 | 0 | } |
2026 | 0 | else |
2027 | 0 | { |
2028 | 0 | if (entry->tlsoff_entry >= -(1 << (16 - 1)) |
2029 | 0 | && entry->tlsoff_entry < (1 << (16 - 1))) |
2030 | 0 | { |
2031 | | /* setlos lo(tlsoff_entry), gr8 */ |
2032 | 0 | bfd_put_32 (output_bfd, |
2033 | 0 | 0x90fc0000 |
2034 | 0 | | (entry->tlsoff_entry |
2035 | 0 | & (((bfd_vma)1 << 16) - 1)), |
2036 | 0 | plt_code); |
2037 | 0 | plt_code += 4; |
2038 | 0 | } |
2039 | 0 | else |
2040 | 0 | { |
2041 | | /* sethi.p hi(tlsoff_entry), gr8 |
2042 | | setlo lo(tlsoff_entry), gr8 */ |
2043 | 0 | bfd_put_32 (output_bfd, |
2044 | 0 | 0x10f80000 |
2045 | 0 | | ((entry->tlsoff_entry >> 16) |
2046 | 0 | & (((bfd_vma)1 << 16) - 1)), |
2047 | 0 | plt_code); |
2048 | 0 | plt_code += 4; |
2049 | 0 | bfd_put_32 (output_bfd, |
2050 | 0 | 0x90f40000 |
2051 | 0 | | (entry->tlsoff_entry |
2052 | 0 | & (((bfd_vma)1 << 16) - 1)), |
2053 | 0 | plt_code); |
2054 | 0 | plt_code += 4; |
2055 | 0 | } |
2056 | | /* ld @(gr15,gr8),gr9 */ |
2057 | 0 | bfd_put_32 (output_bfd, 0x9008f108, plt_code); |
2058 | 0 | plt_code += 4; |
2059 | 0 | } |
2060 | | /* ret */ |
2061 | 0 | bfd_put_32 (output_bfd, 0xc03a4000, plt_code); |
2062 | 0 | } |
2063 | 0 | else |
2064 | 0 | { |
2065 | 0 | BFD_ASSERT (entry->tlsdesc_entry); |
2066 | | |
2067 | | /* Figure out what kind of PLT entry we need, depending on the |
2068 | | location of the TLS descriptor within the GOT. */ |
2069 | 0 | if (entry->tlsdesc_entry >= -(1 << (12 - 1)) |
2070 | 0 | && entry->tlsdesc_entry < (1 << (12 - 1))) |
2071 | 0 | { |
2072 | | /* lddi @(gr15, tlsdesc_entry), gr8 */ |
2073 | 0 | bfd_put_32 (output_bfd, |
2074 | 0 | 0x90ccf000 | (entry->tlsdesc_entry |
2075 | 0 | & ((1 << 12) - 1)), |
2076 | 0 | plt_code); |
2077 | 0 | plt_code += 4; |
2078 | 0 | } |
2079 | 0 | else |
2080 | 0 | { |
2081 | 0 | if (entry->tlsdesc_entry >= -(1 << (16 - 1)) |
2082 | 0 | && entry->tlsdesc_entry < (1 << (16 - 1))) |
2083 | 0 | { |
2084 | | /* setlos lo(tlsdesc_entry), gr8 */ |
2085 | 0 | bfd_put_32 (output_bfd, |
2086 | 0 | 0x90fc0000 |
2087 | 0 | | (entry->tlsdesc_entry |
2088 | 0 | & (((bfd_vma)1 << 16) - 1)), |
2089 | 0 | plt_code); |
2090 | 0 | plt_code += 4; |
2091 | 0 | } |
2092 | 0 | else |
2093 | 0 | { |
2094 | | /* sethi.p hi(tlsdesc_entry), gr8 |
2095 | | setlo lo(tlsdesc_entry), gr8 */ |
2096 | 0 | bfd_put_32 (output_bfd, |
2097 | 0 | 0x10f80000 |
2098 | 0 | | ((entry->tlsdesc_entry >> 16) |
2099 | 0 | & (((bfd_vma)1 << 16) - 1)), |
2100 | 0 | plt_code); |
2101 | 0 | plt_code += 4; |
2102 | 0 | bfd_put_32 (output_bfd, |
2103 | 0 | 0x90f40000 |
2104 | 0 | | (entry->tlsdesc_entry |
2105 | 0 | & (((bfd_vma)1 << 16) - 1)), |
2106 | 0 | plt_code); |
2107 | 0 | plt_code += 4; |
2108 | 0 | } |
2109 | | /* ldd @(gr15,gr8),gr8 */ |
2110 | 0 | bfd_put_32 (output_bfd, 0x9008f148, plt_code); |
2111 | 0 | plt_code += 4; |
2112 | 0 | } |
2113 | | /* jmpl @(gr8,gr0) */ |
2114 | 0 | bfd_put_32 (output_bfd, 0x80308000, plt_code); |
2115 | 0 | } |
2116 | 0 | } |
2117 | |
|
2118 | 0 | return true; |
2119 | 0 | } |
2120 | | |
2121 | | /* Handle an FRV small data reloc. */ |
2122 | | |
2123 | | static bfd_reloc_status_type |
2124 | | elf32_frv_relocate_gprel12 (struct bfd_link_info *info, |
2125 | | bfd *input_bfd, |
2126 | | asection *input_section, |
2127 | | Elf_Internal_Rela *relocation, |
2128 | | bfd_byte *contents, |
2129 | | bfd_vma value) |
2130 | 0 | { |
2131 | 0 | bfd_vma insn; |
2132 | 0 | bfd_vma gp; |
2133 | 0 | struct bfd_link_hash_entry *h; |
2134 | |
|
2135 | 0 | h = bfd_link_hash_lookup (info->hash, "_gp", false, false, true); |
2136 | |
|
2137 | 0 | gp = (h->u.def.value |
2138 | 0 | + h->u.def.section->output_section->vma |
2139 | 0 | + h->u.def.section->output_offset); |
2140 | |
|
2141 | 0 | value -= input_section->output_section->vma; |
2142 | 0 | value -= (gp - input_section->output_section->vma); |
2143 | |
|
2144 | 0 | insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); |
2145 | |
|
2146 | 0 | value += relocation->r_addend; |
2147 | |
|
2148 | 0 | if ((long) value > 0x7ff || (long) value < -0x800) |
2149 | 0 | return bfd_reloc_overflow; |
2150 | | |
2151 | 0 | bfd_put_32 (input_bfd, |
2152 | 0 | (insn & 0xfffff000) | (value & 0xfff), |
2153 | 0 | contents + relocation->r_offset); |
2154 | |
|
2155 | 0 | return bfd_reloc_ok; |
2156 | 0 | } |
2157 | | |
2158 | | /* Handle an FRV small data reloc. for the u12 field. */ |
2159 | | |
2160 | | static bfd_reloc_status_type |
2161 | | elf32_frv_relocate_gprelu12 (struct bfd_link_info *info, |
2162 | | bfd *input_bfd, |
2163 | | asection *input_section, |
2164 | | Elf_Internal_Rela *relocation, |
2165 | | bfd_byte *contents, |
2166 | | bfd_vma value) |
2167 | 0 | { |
2168 | 0 | bfd_vma insn; |
2169 | 0 | bfd_vma gp; |
2170 | 0 | struct bfd_link_hash_entry *h; |
2171 | 0 | bfd_vma mask; |
2172 | |
|
2173 | 0 | h = bfd_link_hash_lookup (info->hash, "_gp", false, false, true); |
2174 | |
|
2175 | 0 | gp = (h->u.def.value |
2176 | 0 | + h->u.def.section->output_section->vma |
2177 | 0 | + h->u.def.section->output_offset); |
2178 | |
|
2179 | 0 | value -= input_section->output_section->vma; |
2180 | 0 | value -= (gp - input_section->output_section->vma); |
2181 | |
|
2182 | 0 | insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); |
2183 | |
|
2184 | 0 | value += relocation->r_addend; |
2185 | |
|
2186 | 0 | if ((long) value > 0x7ff || (long) value < -0x800) |
2187 | 0 | return bfd_reloc_overflow; |
2188 | | |
2189 | | /* The high 6 bits go into bits 17-12. The low 6 bits go into bits 5-0. */ |
2190 | 0 | mask = 0x3f03f; |
2191 | 0 | insn = (insn & ~mask) | ((value & 0xfc0) << 12) | (value & 0x3f); |
2192 | |
|
2193 | 0 | bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); |
2194 | |
|
2195 | 0 | return bfd_reloc_ok; |
2196 | 0 | } |
2197 | | |
2198 | | /* Handle an FRV ELF HI16 reloc. */ |
2199 | | |
2200 | | static bfd_reloc_status_type |
2201 | | elf32_frv_relocate_hi16 (bfd *input_bfd, |
2202 | | Elf_Internal_Rela *relhi, |
2203 | | bfd_byte *contents, |
2204 | | bfd_vma value) |
2205 | 0 | { |
2206 | 0 | bfd_vma insn; |
2207 | |
|
2208 | 0 | insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); |
2209 | |
|
2210 | 0 | value += relhi->r_addend; |
2211 | 0 | value = ((value >> 16) & 0xffff); |
2212 | |
|
2213 | 0 | insn = (insn & 0xffff0000) | value; |
2214 | |
|
2215 | 0 | if ((long) value > 0xffff || (long) value < -0x10000) |
2216 | 0 | return bfd_reloc_overflow; |
2217 | | |
2218 | 0 | bfd_put_32 (input_bfd, insn, contents + relhi->r_offset); |
2219 | 0 | return bfd_reloc_ok; |
2220 | |
|
2221 | 0 | } |
2222 | | static bfd_reloc_status_type |
2223 | | elf32_frv_relocate_lo16 (bfd *input_bfd, |
2224 | | Elf_Internal_Rela *rello, |
2225 | | bfd_byte *contents, |
2226 | | bfd_vma value) |
2227 | 0 | { |
2228 | 0 | bfd_vma insn; |
2229 | |
|
2230 | 0 | insn = bfd_get_32 (input_bfd, contents + rello->r_offset); |
2231 | |
|
2232 | 0 | value += rello->r_addend; |
2233 | 0 | value = value & 0xffff; |
2234 | |
|
2235 | 0 | insn = (insn & 0xffff0000) | value; |
2236 | |
|
2237 | 0 | if ((long) value > 0xffff || (long) value < -0x10000) |
2238 | 0 | return bfd_reloc_overflow; |
2239 | | |
2240 | 0 | bfd_put_32 (input_bfd, insn, contents + rello->r_offset); |
2241 | 0 | return bfd_reloc_ok; |
2242 | 0 | } |
2243 | | |
2244 | | /* Perform the relocation for the CALL label24 instruction. */ |
2245 | | |
2246 | | static bfd_reloc_status_type |
2247 | | elf32_frv_relocate_label24 (bfd *input_bfd, |
2248 | | asection *input_section, |
2249 | | Elf_Internal_Rela *rello, |
2250 | | bfd_byte *contents, |
2251 | | bfd_vma value) |
2252 | 0 | { |
2253 | 0 | bfd_vma insn; |
2254 | 0 | bfd_vma label6; |
2255 | 0 | bfd_vma label18; |
2256 | | |
2257 | | /* The format for the call instruction is: |
2258 | | |
2259 | | 0 000000 0001111 000000000000000000 |
2260 | | label6 opcode label18 |
2261 | | |
2262 | | The branch calculation is: pc + (4*label24) |
2263 | | where label24 is the concatenation of label6 and label18. */ |
2264 | | |
2265 | | /* Grab the instruction. */ |
2266 | 0 | insn = bfd_get_32 (input_bfd, contents + rello->r_offset); |
2267 | |
|
2268 | 0 | value -= input_section->output_section->vma + input_section->output_offset; |
2269 | 0 | value -= rello->r_offset; |
2270 | 0 | value += rello->r_addend; |
2271 | |
|
2272 | 0 | value = value >> 2; |
2273 | |
|
2274 | 0 | label6 = value & 0xfc0000; |
2275 | 0 | label6 = label6 << 7; |
2276 | |
|
2277 | 0 | label18 = value & 0x3ffff; |
2278 | |
|
2279 | 0 | insn = insn & 0x803c0000; |
2280 | 0 | insn = insn | label6; |
2281 | 0 | insn = insn | label18; |
2282 | |
|
2283 | 0 | bfd_put_32 (input_bfd, insn, contents + rello->r_offset); |
2284 | |
|
2285 | 0 | return bfd_reloc_ok; |
2286 | 0 | } |
2287 | | |
2288 | | static bfd_reloc_status_type |
2289 | | elf32_frv_relocate_gprelhi (struct bfd_link_info *info, |
2290 | | bfd *input_bfd, |
2291 | | asection *input_section, |
2292 | | Elf_Internal_Rela *relocation, |
2293 | | bfd_byte *contents, |
2294 | | bfd_vma value) |
2295 | 0 | { |
2296 | 0 | bfd_vma insn; |
2297 | 0 | bfd_vma gp; |
2298 | 0 | struct bfd_link_hash_entry *h; |
2299 | |
|
2300 | 0 | h = bfd_link_hash_lookup (info->hash, "_gp", false, false, true); |
2301 | |
|
2302 | 0 | gp = (h->u.def.value |
2303 | 0 | + h->u.def.section->output_section->vma |
2304 | 0 | + h->u.def.section->output_offset); |
2305 | |
|
2306 | 0 | value -= input_section->output_section->vma; |
2307 | 0 | value -= (gp - input_section->output_section->vma); |
2308 | 0 | value += relocation->r_addend; |
2309 | 0 | value = ((value >> 16) & 0xffff); |
2310 | |
|
2311 | 0 | if ((long) value > 0xffff || (long) value < -0x10000) |
2312 | 0 | return bfd_reloc_overflow; |
2313 | | |
2314 | 0 | insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); |
2315 | 0 | insn = (insn & 0xffff0000) | value; |
2316 | |
|
2317 | 0 | bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); |
2318 | 0 | return bfd_reloc_ok; |
2319 | 0 | } |
2320 | | |
2321 | | static bfd_reloc_status_type |
2322 | | elf32_frv_relocate_gprello (struct bfd_link_info *info, |
2323 | | bfd *input_bfd, |
2324 | | asection *input_section, |
2325 | | Elf_Internal_Rela *relocation, |
2326 | | bfd_byte *contents, |
2327 | | bfd_vma value) |
2328 | 0 | { |
2329 | 0 | bfd_vma insn; |
2330 | 0 | bfd_vma gp; |
2331 | 0 | struct bfd_link_hash_entry *h; |
2332 | |
|
2333 | 0 | h = bfd_link_hash_lookup (info->hash, "_gp", false, false, true); |
2334 | |
|
2335 | 0 | gp = (h->u.def.value |
2336 | 0 | + h->u.def.section->output_section->vma |
2337 | 0 | + h->u.def.section->output_offset); |
2338 | |
|
2339 | 0 | value -= input_section->output_section->vma; |
2340 | 0 | value -= (gp - input_section->output_section->vma); |
2341 | 0 | value += relocation->r_addend; |
2342 | 0 | value = value & 0xffff; |
2343 | |
|
2344 | 0 | if ((long) value > 0xffff || (long) value < -0x10000) |
2345 | 0 | return bfd_reloc_overflow; |
2346 | | |
2347 | 0 | insn = bfd_get_32 (input_bfd, contents + relocation->r_offset); |
2348 | 0 | insn = (insn & 0xffff0000) | value; |
2349 | |
|
2350 | 0 | bfd_put_32 (input_bfd, insn, contents + relocation->r_offset); |
2351 | |
|
2352 | 0 | return bfd_reloc_ok; |
2353 | 0 | } |
2354 | | |
2355 | | static reloc_howto_type * |
2356 | | frv_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
2357 | | bfd_reloc_code_real_type code) |
2358 | 0 | { |
2359 | 0 | switch (code) |
2360 | 0 | { |
2361 | 0 | default: |
2362 | 0 | break; |
2363 | | |
2364 | 0 | case BFD_RELOC_NONE: |
2365 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_NONE]; |
2366 | | |
2367 | 0 | case BFD_RELOC_32: |
2368 | 0 | if (elf_elfheader (abfd)->e_type == ET_EXEC |
2369 | 0 | || elf_elfheader (abfd)->e_type == ET_DYN) |
2370 | 0 | return &elf32_frv_rel_32_howto; |
2371 | | /* Fall through. */ |
2372 | 0 | case BFD_RELOC_CTOR: |
2373 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_32]; |
2374 | | |
2375 | 0 | case BFD_RELOC_FRV_LABEL16: |
2376 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_LABEL16]; |
2377 | | |
2378 | 0 | case BFD_RELOC_FRV_LABEL24: |
2379 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_LABEL24]; |
2380 | | |
2381 | 0 | case BFD_RELOC_FRV_LO16: |
2382 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_LO16]; |
2383 | | |
2384 | 0 | case BFD_RELOC_FRV_HI16: |
2385 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_HI16]; |
2386 | | |
2387 | 0 | case BFD_RELOC_FRV_GPREL12: |
2388 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_GPREL12]; |
2389 | | |
2390 | 0 | case BFD_RELOC_FRV_GPRELU12: |
2391 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_GPRELU12]; |
2392 | | |
2393 | 0 | case BFD_RELOC_FRV_GPREL32: |
2394 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_GPREL32]; |
2395 | | |
2396 | 0 | case BFD_RELOC_FRV_GPRELHI: |
2397 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_GPRELHI]; |
2398 | | |
2399 | 0 | case BFD_RELOC_FRV_GPRELLO: |
2400 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_GPRELLO]; |
2401 | | |
2402 | 0 | case BFD_RELOC_FRV_GOT12: |
2403 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_GOT12]; |
2404 | | |
2405 | 0 | case BFD_RELOC_FRV_GOTHI: |
2406 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_GOTHI]; |
2407 | | |
2408 | 0 | case BFD_RELOC_FRV_GOTLO: |
2409 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_GOTLO]; |
2410 | | |
2411 | 0 | case BFD_RELOC_FRV_FUNCDESC: |
2412 | 0 | if (elf_elfheader (abfd)->e_type == ET_EXEC |
2413 | 0 | || elf_elfheader (abfd)->e_type == ET_DYN) |
2414 | 0 | return &elf32_frv_rel_funcdesc_howto; |
2415 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC]; |
2416 | | |
2417 | 0 | case BFD_RELOC_FRV_FUNCDESC_GOT12: |
2418 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOT12]; |
2419 | | |
2420 | 0 | case BFD_RELOC_FRV_FUNCDESC_GOTHI: |
2421 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTHI]; |
2422 | | |
2423 | 0 | case BFD_RELOC_FRV_FUNCDESC_GOTLO: |
2424 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTLO]; |
2425 | | |
2426 | 0 | case BFD_RELOC_FRV_FUNCDESC_VALUE: |
2427 | 0 | if (elf_elfheader (abfd)->e_type == ET_EXEC |
2428 | 0 | || elf_elfheader (abfd)->e_type == ET_DYN) |
2429 | 0 | return &elf32_frv_rel_funcdesc_value_howto; |
2430 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_VALUE]; |
2431 | | |
2432 | 0 | case BFD_RELOC_FRV_FUNCDESC_GOTOFF12: |
2433 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFF12]; |
2434 | | |
2435 | 0 | case BFD_RELOC_FRV_FUNCDESC_GOTOFFHI: |
2436 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFFHI]; |
2437 | | |
2438 | 0 | case BFD_RELOC_FRV_FUNCDESC_GOTOFFLO: |
2439 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_FUNCDESC_GOTOFFLO]; |
2440 | | |
2441 | 0 | case BFD_RELOC_FRV_GOTOFF12: |
2442 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_GOTOFF12]; |
2443 | | |
2444 | 0 | case BFD_RELOC_FRV_GOTOFFHI: |
2445 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_GOTOFFHI]; |
2446 | | |
2447 | 0 | case BFD_RELOC_FRV_GOTOFFLO: |
2448 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_GOTOFFLO]; |
2449 | | |
2450 | 0 | case BFD_RELOC_FRV_GETTLSOFF: |
2451 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_GETTLSOFF]; |
2452 | | |
2453 | 0 | case BFD_RELOC_FRV_TLSDESC_VALUE: |
2454 | 0 | if (elf_elfheader (abfd)->e_type == ET_EXEC |
2455 | 0 | || elf_elfheader (abfd)->e_type == ET_DYN) |
2456 | 0 | return &elf32_frv_rel_tlsdesc_value_howto; |
2457 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_TLSDESC_VALUE]; |
2458 | | |
2459 | 0 | case BFD_RELOC_FRV_GOTTLSDESC12: |
2460 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSDESC12]; |
2461 | | |
2462 | 0 | case BFD_RELOC_FRV_GOTTLSDESCHI: |
2463 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSDESCHI]; |
2464 | | |
2465 | 0 | case BFD_RELOC_FRV_GOTTLSDESCLO: |
2466 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSDESCLO]; |
2467 | | |
2468 | 0 | case BFD_RELOC_FRV_TLSMOFF12: |
2469 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFF12]; |
2470 | | |
2471 | 0 | case BFD_RELOC_FRV_TLSMOFFHI: |
2472 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFFHI]; |
2473 | | |
2474 | 0 | case BFD_RELOC_FRV_TLSMOFFLO: |
2475 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFFLO]; |
2476 | | |
2477 | 0 | case BFD_RELOC_FRV_GOTTLSOFF12: |
2478 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSOFF12]; |
2479 | | |
2480 | 0 | case BFD_RELOC_FRV_GOTTLSOFFHI: |
2481 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSOFFHI]; |
2482 | | |
2483 | 0 | case BFD_RELOC_FRV_GOTTLSOFFLO: |
2484 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_GOTTLSOFFLO]; |
2485 | | |
2486 | 0 | case BFD_RELOC_FRV_TLSOFF: |
2487 | 0 | if (elf_elfheader (abfd)->e_type == ET_EXEC |
2488 | 0 | || elf_elfheader (abfd)->e_type == ET_DYN) |
2489 | 0 | return &elf32_frv_rel_tlsoff_howto; |
2490 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_TLSOFF]; |
2491 | | |
2492 | 0 | case BFD_RELOC_FRV_TLSDESC_RELAX: |
2493 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_TLSDESC_RELAX]; |
2494 | | |
2495 | 0 | case BFD_RELOC_FRV_GETTLSOFF_RELAX: |
2496 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_GETTLSOFF_RELAX]; |
2497 | | |
2498 | 0 | case BFD_RELOC_FRV_TLSOFF_RELAX: |
2499 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_TLSOFF_RELAX]; |
2500 | | |
2501 | 0 | case BFD_RELOC_FRV_TLSMOFF: |
2502 | 0 | return &elf32_frv_howto_table[ (int) R_FRV_TLSMOFF]; |
2503 | | |
2504 | 0 | case BFD_RELOC_VTABLE_INHERIT: |
2505 | 0 | return &elf32_frv_vtinherit_howto; |
2506 | | |
2507 | 0 | case BFD_RELOC_VTABLE_ENTRY: |
2508 | 0 | return &elf32_frv_vtentry_howto; |
2509 | 0 | } |
2510 | | |
2511 | 0 | return NULL; |
2512 | 0 | } |
2513 | | |
2514 | | static reloc_howto_type * |
2515 | | frv_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name) |
2516 | 0 | { |
2517 | 0 | unsigned int i; |
2518 | |
|
2519 | 0 | for (i = 0; |
2520 | 0 | i < sizeof (elf32_frv_howto_table) / sizeof (elf32_frv_howto_table[0]); |
2521 | 0 | i++) |
2522 | 0 | if (elf32_frv_howto_table[i].name != NULL |
2523 | 0 | && strcasecmp (elf32_frv_howto_table[i].name, r_name) == 0) |
2524 | 0 | return &elf32_frv_howto_table[i]; |
2525 | | |
2526 | 0 | if (strcasecmp (elf32_frv_vtinherit_howto.name, r_name) == 0) |
2527 | 0 | return &elf32_frv_vtinherit_howto; |
2528 | 0 | if (strcasecmp (elf32_frv_vtentry_howto.name, r_name) == 0) |
2529 | 0 | return &elf32_frv_vtentry_howto; |
2530 | | |
2531 | 0 | return NULL; |
2532 | 0 | } |
2533 | | |
2534 | | /* Set the howto pointer for an FRV ELF reloc. */ |
2535 | | |
2536 | | static bool |
2537 | | frv_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED, |
2538 | | arelent *cache_ptr, |
2539 | | Elf_Internal_Rela *dst) |
2540 | 0 | { |
2541 | 0 | unsigned int r_type; |
2542 | |
|
2543 | 0 | r_type = ELF32_R_TYPE (dst->r_info); |
2544 | 0 | switch (r_type) |
2545 | 0 | { |
2546 | 0 | case R_FRV_GNU_VTINHERIT: |
2547 | 0 | cache_ptr->howto = &elf32_frv_vtinherit_howto; |
2548 | 0 | break; |
2549 | | |
2550 | 0 | case R_FRV_GNU_VTENTRY: |
2551 | 0 | cache_ptr->howto = &elf32_frv_vtentry_howto; |
2552 | 0 | break; |
2553 | | |
2554 | 0 | default: |
2555 | 0 | if (r_type >= ARRAY_SIZE (elf32_frv_howto_table)) |
2556 | 0 | { |
2557 | | /* xgettext:c-format */ |
2558 | 0 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
2559 | 0 | abfd, r_type); |
2560 | 0 | bfd_set_error (bfd_error_bad_value); |
2561 | 0 | return false; |
2562 | 0 | } |
2563 | 0 | cache_ptr->howto = & elf32_frv_howto_table [r_type]; |
2564 | 0 | break; |
2565 | 0 | } |
2566 | 0 | return true; |
2567 | 0 | } |
2568 | | |
2569 | | /* Set the howto pointer for an FRV ELF REL reloc. */ |
2570 | | |
2571 | | static bool |
2572 | | frvfdpic_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, |
2573 | | arelent *cache_ptr, Elf_Internal_Rela *dst) |
2574 | 0 | { |
2575 | 0 | unsigned int r_type; |
2576 | |
|
2577 | 0 | r_type = ELF32_R_TYPE (dst->r_info); |
2578 | 0 | switch (r_type) |
2579 | 0 | { |
2580 | 0 | case R_FRV_32: |
2581 | 0 | cache_ptr->howto = &elf32_frv_rel_32_howto; |
2582 | 0 | break; |
2583 | | |
2584 | 0 | case R_FRV_FUNCDESC: |
2585 | 0 | cache_ptr->howto = &elf32_frv_rel_funcdesc_howto; |
2586 | 0 | break; |
2587 | | |
2588 | 0 | case R_FRV_FUNCDESC_VALUE: |
2589 | 0 | cache_ptr->howto = &elf32_frv_rel_funcdesc_value_howto; |
2590 | 0 | break; |
2591 | | |
2592 | 0 | case R_FRV_TLSDESC_VALUE: |
2593 | 0 | cache_ptr->howto = &elf32_frv_rel_tlsdesc_value_howto; |
2594 | 0 | break; |
2595 | | |
2596 | 0 | case R_FRV_TLSOFF: |
2597 | 0 | cache_ptr->howto = &elf32_frv_rel_tlsoff_howto; |
2598 | 0 | break; |
2599 | | |
2600 | 0 | default: |
2601 | 0 | cache_ptr->howto = NULL; |
2602 | 0 | return false; |
2603 | 0 | } |
2604 | 0 | return true; |
2605 | 0 | } |
2606 | | |
2607 | | /* Perform a single relocation. By default we use the standard BFD |
2608 | | routines, but a few relocs, we have to do them ourselves. */ |
2609 | | |
2610 | | static bfd_reloc_status_type |
2611 | | frv_final_link_relocate (reloc_howto_type *howto, |
2612 | | bfd *input_bfd, |
2613 | | asection *input_section, |
2614 | | bfd_byte *contents, |
2615 | | Elf_Internal_Rela *rel, |
2616 | | bfd_vma relocation) |
2617 | 0 | { |
2618 | 0 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
2619 | 0 | contents, rel->r_offset, relocation, |
2620 | 0 | rel->r_addend); |
2621 | 0 | } |
2622 | | |
2623 | | |
2624 | | /* Relocate an FRV ELF section. |
2625 | | |
2626 | | The RELOCATE_SECTION function is called by the new ELF backend linker |
2627 | | to handle the relocations for a section. |
2628 | | |
2629 | | The relocs are always passed as Rela structures; if the section |
2630 | | actually uses Rel structures, the r_addend field will always be |
2631 | | zero. |
2632 | | |
2633 | | This function is responsible for adjusting the section contents as |
2634 | | necessary, and (if using Rela relocs and generating a relocatable |
2635 | | output file) adjusting the reloc addend as necessary. |
2636 | | |
2637 | | This function does not have to worry about setting the reloc |
2638 | | address or the reloc symbol index. |
2639 | | |
2640 | | LOCAL_SYMS is a pointer to the swapped in local symbols. |
2641 | | |
2642 | | LOCAL_SECTIONS is an array giving the section in the input file |
2643 | | corresponding to the st_shndx field of each local symbol. |
2644 | | |
2645 | | The global hash table entry for the global symbols can be found |
2646 | | via elf_sym_hashes (input_bfd). |
2647 | | |
2648 | | When generating relocatable output, this function must handle |
2649 | | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
2650 | | going to be the section symbol corresponding to the output |
2651 | | section, which means that the addend must be adjusted |
2652 | | accordingly. */ |
2653 | | |
2654 | | static int |
2655 | | elf32_frv_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED, |
2656 | | struct bfd_link_info *info, |
2657 | | bfd *input_bfd, |
2658 | | asection *input_section, |
2659 | | bfd_byte *contents, |
2660 | | Elf_Internal_Rela *relocs, |
2661 | | Elf_Internal_Sym *local_syms, |
2662 | | asection **local_sections) |
2663 | 0 | { |
2664 | 0 | Elf_Internal_Shdr *symtab_hdr; |
2665 | 0 | struct elf_link_hash_entry **sym_hashes; |
2666 | 0 | Elf_Internal_Rela *rel; |
2667 | 0 | Elf_Internal_Rela *relend; |
2668 | 0 | unsigned isec_segment, got_segment, plt_segment, gprel_segment, tls_segment, |
2669 | 0 | check_segment[2]; |
2670 | 0 | int silence_segment_error = !bfd_link_pic (info); |
2671 | 0 | unsigned long insn; |
2672 | |
|
2673 | 0 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; |
2674 | 0 | sym_hashes = elf_sym_hashes (input_bfd); |
2675 | 0 | relend = relocs + input_section->reloc_count; |
2676 | |
|
2677 | 0 | isec_segment = _frvfdpic_osec_to_segment (output_bfd, |
2678 | 0 | input_section->output_section); |
2679 | 0 | if (IS_FDPIC (output_bfd) && frvfdpic_got_section (info)) |
2680 | 0 | got_segment = _frvfdpic_osec_to_segment (output_bfd, |
2681 | 0 | frvfdpic_got_section (info) |
2682 | 0 | ->output_section); |
2683 | 0 | else |
2684 | 0 | got_segment = -1; |
2685 | 0 | if (IS_FDPIC (output_bfd) && frvfdpic_gotfixup_section (info)) |
2686 | 0 | gprel_segment = _frvfdpic_osec_to_segment (output_bfd, |
2687 | 0 | frvfdpic_gotfixup_section (info) |
2688 | 0 | ->output_section); |
2689 | 0 | else |
2690 | 0 | gprel_segment = -1; |
2691 | 0 | if (IS_FDPIC (output_bfd) && frvfdpic_plt_section (info)) |
2692 | 0 | plt_segment = _frvfdpic_osec_to_segment (output_bfd, |
2693 | 0 | frvfdpic_plt_section (info) |
2694 | 0 | ->output_section); |
2695 | 0 | else |
2696 | 0 | plt_segment = -1; |
2697 | 0 | if (elf_hash_table (info)->tls_sec) |
2698 | 0 | tls_segment = _frvfdpic_osec_to_segment (output_bfd, |
2699 | 0 | elf_hash_table (info)->tls_sec); |
2700 | 0 | else |
2701 | 0 | tls_segment = -1; |
2702 | |
|
2703 | 0 | for (rel = relocs; rel < relend; rel ++) |
2704 | 0 | { |
2705 | 0 | reloc_howto_type *howto; |
2706 | 0 | unsigned long r_symndx; |
2707 | 0 | Elf_Internal_Sym *sym; |
2708 | 0 | asection *sec; |
2709 | 0 | struct elf_link_hash_entry *h; |
2710 | 0 | bfd_vma relocation; |
2711 | 0 | bfd_reloc_status_type r; |
2712 | 0 | const char *name; |
2713 | 0 | int r_type; |
2714 | 0 | asection *osec; |
2715 | 0 | struct frvfdpic_relocs_info *picrel = NULL; |
2716 | 0 | bfd_vma orig_addend = rel->r_addend; |
2717 | |
|
2718 | 0 | r_type = ELF32_R_TYPE (rel->r_info); |
2719 | |
|
2720 | 0 | if ( r_type == R_FRV_GNU_VTINHERIT |
2721 | 0 | || r_type == R_FRV_GNU_VTENTRY) |
2722 | 0 | continue; |
2723 | | |
2724 | 0 | r_symndx = ELF32_R_SYM (rel->r_info); |
2725 | 0 | howto = elf32_frv_howto_table + ELF32_R_TYPE (rel->r_info); |
2726 | 0 | h = NULL; |
2727 | 0 | sym = NULL; |
2728 | 0 | sec = NULL; |
2729 | |
|
2730 | 0 | if (r_symndx < symtab_hdr->sh_info) |
2731 | 0 | { |
2732 | 0 | sym = local_syms + r_symndx; |
2733 | 0 | osec = sec = local_sections [r_symndx]; |
2734 | 0 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
2735 | |
|
2736 | 0 | name = bfd_elf_string_from_elf_section |
2737 | 0 | (input_bfd, symtab_hdr->sh_link, sym->st_name); |
2738 | 0 | if (name == NULL || name[0] == 0) |
2739 | 0 | name = bfd_section_name (sec); |
2740 | 0 | } |
2741 | 0 | else |
2742 | 0 | { |
2743 | 0 | bool warned, ignored; |
2744 | 0 | bool unresolved_reloc; |
2745 | |
|
2746 | 0 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
2747 | 0 | r_symndx, symtab_hdr, sym_hashes, |
2748 | 0 | h, sec, relocation, |
2749 | 0 | unresolved_reloc, warned, ignored); |
2750 | 0 | osec = sec; |
2751 | 0 | name = h->root.root.string; |
2752 | 0 | } |
2753 | | |
2754 | 0 | if (sec != NULL && discarded_section (sec)) |
2755 | 0 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
2756 | 0 | rel, 1, relend, howto, 0, contents); |
2757 | |
|
2758 | 0 | if (bfd_link_relocatable (info)) |
2759 | 0 | continue; |
2760 | | |
2761 | 0 | if (r_type != R_FRV_TLSMOFF |
2762 | 0 | && h != NULL |
2763 | 0 | && (h->root.type == bfd_link_hash_defined |
2764 | 0 | || h->root.type == bfd_link_hash_defweak) |
2765 | 0 | && !FRVFDPIC_SYM_LOCAL (info, h)) |
2766 | 0 | { |
2767 | 0 | osec = sec = NULL; |
2768 | 0 | relocation = 0; |
2769 | 0 | } |
2770 | |
|
2771 | 0 | switch (r_type) |
2772 | 0 | { |
2773 | 0 | case R_FRV_LABEL24: |
2774 | 0 | case R_FRV_32: |
2775 | 0 | if (! IS_FDPIC (output_bfd)) |
2776 | 0 | goto non_fdpic; |
2777 | | /* Fall through. */ |
2778 | | |
2779 | 0 | case R_FRV_GOT12: |
2780 | 0 | case R_FRV_GOTHI: |
2781 | 0 | case R_FRV_GOTLO: |
2782 | 0 | case R_FRV_FUNCDESC_GOT12: |
2783 | 0 | case R_FRV_FUNCDESC_GOTHI: |
2784 | 0 | case R_FRV_FUNCDESC_GOTLO: |
2785 | 0 | case R_FRV_GOTOFF12: |
2786 | 0 | case R_FRV_GOTOFFHI: |
2787 | 0 | case R_FRV_GOTOFFLO: |
2788 | 0 | case R_FRV_FUNCDESC_GOTOFF12: |
2789 | 0 | case R_FRV_FUNCDESC_GOTOFFHI: |
2790 | 0 | case R_FRV_FUNCDESC_GOTOFFLO: |
2791 | 0 | case R_FRV_FUNCDESC: |
2792 | 0 | case R_FRV_FUNCDESC_VALUE: |
2793 | 0 | case R_FRV_GETTLSOFF: |
2794 | 0 | case R_FRV_TLSDESC_VALUE: |
2795 | 0 | case R_FRV_GOTTLSDESC12: |
2796 | 0 | case R_FRV_GOTTLSDESCHI: |
2797 | 0 | case R_FRV_GOTTLSDESCLO: |
2798 | 0 | case R_FRV_TLSMOFF12: |
2799 | 0 | case R_FRV_TLSMOFFHI: |
2800 | 0 | case R_FRV_TLSMOFFLO: |
2801 | 0 | case R_FRV_GOTTLSOFF12: |
2802 | 0 | case R_FRV_GOTTLSOFFHI: |
2803 | 0 | case R_FRV_GOTTLSOFFLO: |
2804 | 0 | case R_FRV_TLSOFF: |
2805 | 0 | case R_FRV_TLSDESC_RELAX: |
2806 | 0 | case R_FRV_GETTLSOFF_RELAX: |
2807 | 0 | case R_FRV_TLSOFF_RELAX: |
2808 | 0 | case R_FRV_TLSMOFF: |
2809 | 0 | if ((input_section->flags & SEC_ALLOC) == 0) |
2810 | 0 | break; |
2811 | | |
2812 | 0 | if (h != NULL) |
2813 | 0 | picrel = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info |
2814 | 0 | (info), input_bfd, h, |
2815 | 0 | orig_addend, INSERT); |
2816 | 0 | else |
2817 | | /* In order to find the entry we created before, we must |
2818 | | use the original addend, not the one that may have been |
2819 | | modified by _bfd_elf_rela_local_sym(). */ |
2820 | 0 | picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info |
2821 | 0 | (info), input_bfd, r_symndx, |
2822 | 0 | orig_addend, INSERT); |
2823 | 0 | if (! picrel) |
2824 | 0 | return false; |
2825 | | |
2826 | 0 | if (!_frvfdpic_emit_got_relocs_plt_entries (picrel, output_bfd, info, |
2827 | 0 | osec, sym, |
2828 | 0 | rel->r_addend)) |
2829 | 0 | { |
2830 | 0 | info->callbacks->einfo |
2831 | | /* xgettext:c-format */ |
2832 | 0 | (_("%H: relocation to `%s+%v'" |
2833 | 0 | " may have caused the error above\n"), |
2834 | 0 | input_bfd, input_section, rel->r_offset, name, rel->r_addend); |
2835 | 0 | return false; |
2836 | 0 | } |
2837 | | |
2838 | 0 | break; |
2839 | | |
2840 | 0 | default: |
2841 | 0 | non_fdpic: |
2842 | 0 | picrel = NULL; |
2843 | 0 | if (h |
2844 | 0 | && ! FRVFDPIC_SYM_LOCAL (info, h) |
2845 | 0 | && _bfd_elf_section_offset (output_bfd, info, input_section, |
2846 | 0 | rel->r_offset) != (bfd_vma) -1) |
2847 | 0 | { |
2848 | 0 | info->callbacks->einfo |
2849 | 0 | (_("%H: relocation references symbol" |
2850 | 0 | " not defined in the module\n"), |
2851 | 0 | input_bfd, input_section, rel->r_offset); |
2852 | 0 | return false; |
2853 | 0 | } |
2854 | 0 | break; |
2855 | 0 | } |
2856 | | |
2857 | 0 | switch (r_type) |
2858 | 0 | { |
2859 | 0 | case R_FRV_GETTLSOFF: |
2860 | 0 | case R_FRV_TLSDESC_VALUE: |
2861 | 0 | case R_FRV_GOTTLSDESC12: |
2862 | 0 | case R_FRV_GOTTLSDESCHI: |
2863 | 0 | case R_FRV_GOTTLSDESCLO: |
2864 | 0 | case R_FRV_TLSMOFF12: |
2865 | 0 | case R_FRV_TLSMOFFHI: |
2866 | 0 | case R_FRV_TLSMOFFLO: |
2867 | 0 | case R_FRV_GOTTLSOFF12: |
2868 | 0 | case R_FRV_GOTTLSOFFHI: |
2869 | 0 | case R_FRV_GOTTLSOFFLO: |
2870 | 0 | case R_FRV_TLSOFF: |
2871 | 0 | case R_FRV_TLSDESC_RELAX: |
2872 | 0 | case R_FRV_GETTLSOFF_RELAX: |
2873 | 0 | case R_FRV_TLSOFF_RELAX: |
2874 | 0 | case R_FRV_TLSMOFF: |
2875 | 0 | if (sec && (bfd_is_abs_section (sec) || bfd_is_und_section (sec))) |
2876 | 0 | relocation += tls_biased_base (info); |
2877 | 0 | break; |
2878 | | |
2879 | 0 | default: |
2880 | 0 | break; |
2881 | 0 | } |
2882 | | |
2883 | | /* Try to apply TLS relaxations. */ |
2884 | 0 | if (1) |
2885 | 0 | switch (r_type) |
2886 | 0 | { |
2887 | | |
2888 | 0 | #define LOCAL_EXEC_P(info, picrel) \ |
2889 | 0 | (bfd_link_executable (info) \ |
2890 | 0 | && (picrel->symndx != -1 || FRVFDPIC_SYM_LOCAL ((info), (picrel)->d.h))) |
2891 | 0 | #define INITIAL_EXEC_P(info, picrel) \ |
2892 | 0 | ((bfd_link_executable (info)|| (info)->flags & DF_STATIC_TLS) \ |
2893 | 0 | && (picrel)->tlsoff_entry) |
2894 | | |
2895 | 0 | #define IN_RANGE_FOR_OFST12_P(value) \ |
2896 | 0 | ((bfd_vma)((value) + 2048) < (bfd_vma)4096) |
2897 | 0 | #define IN_RANGE_FOR_SETLOS_P(value) \ |
2898 | 0 | ((bfd_vma)((value) + 32768) < (bfd_vma)65536) |
2899 | 0 | #define TLSMOFF_IN_RANGE_FOR_SETLOS_P(value, info) \ |
2900 | 0 | (IN_RANGE_FOR_SETLOS_P ((value) - tls_biased_base (info))) |
2901 | | |
2902 | 0 | #define RELAX_GETTLSOFF_LOCAL_EXEC_P(info, picrel, value) \ |
2903 | 0 | (LOCAL_EXEC_P ((info), (picrel)) \ |
2904 | 0 | && TLSMOFF_IN_RANGE_FOR_SETLOS_P((value), (info))) |
2905 | 0 | #define RELAX_GETTLSOFF_INITIAL_EXEC_P(info, picrel) \ |
2906 | 0 | (INITIAL_EXEC_P ((info), (picrel)) \ |
2907 | 0 | && IN_RANGE_FOR_OFST12_P ((picrel)->tlsoff_entry)) |
2908 | | |
2909 | 0 | #define RELAX_TLSDESC_LOCAL_EXEC_P(info, picrel, value) \ |
2910 | 0 | (LOCAL_EXEC_P ((info), (picrel))) |
2911 | 0 | #define RELAX_TLSDESC_INITIAL_EXEC_P(info, picrel) \ |
2912 | 0 | (INITIAL_EXEC_P ((info), (picrel))) |
2913 | | |
2914 | 0 | #define RELAX_GOTTLSOFF_LOCAL_EXEC_P(info, picrel, value) \ |
2915 | 0 | (LOCAL_EXEC_P ((info), (picrel)) \ |
2916 | 0 | && TLSMOFF_IN_RANGE_FOR_SETLOS_P((value), (info))) |
2917 | | |
2918 | 0 | case R_FRV_GETTLSOFF: |
2919 | 0 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
2920 | | |
2921 | | /* Is this a call instruction? */ |
2922 | 0 | if ((insn & (unsigned long)0x01fc0000) != 0x003c0000) |
2923 | 0 | { |
2924 | 0 | info->callbacks->einfo |
2925 | 0 | (_("%H: R_FRV_GETTLSOFF not applied to a call instruction\n"), |
2926 | 0 | input_bfd, input_section, rel->r_offset); |
2927 | 0 | return false; |
2928 | 0 | } |
2929 | | |
2930 | 0 | if (RELAX_GETTLSOFF_LOCAL_EXEC_P (info, picrel, |
2931 | 0 | relocation + rel->r_addend)) |
2932 | 0 | { |
2933 | | /* Replace the call instruction (except the packing bit) |
2934 | | with setlos #tlsmofflo(symbol+offset), gr9. */ |
2935 | 0 | insn &= (unsigned long)0x80000000; |
2936 | 0 | insn |= (unsigned long)0x12fc0000; |
2937 | 0 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
2938 | |
|
2939 | 0 | r_type = R_FRV_TLSMOFFLO; |
2940 | 0 | howto = elf32_frv_howto_table + r_type; |
2941 | 0 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
2942 | 0 | } |
2943 | | |
2944 | 0 | else if (RELAX_GETTLSOFF_INITIAL_EXEC_P (info, picrel)) |
2945 | 0 | { |
2946 | | /* Replace the call instruction (except the packing bit) |
2947 | | with ldi @(gr15, #gottlsoff12(symbol+addend)), gr9. */ |
2948 | 0 | insn &= (unsigned long)0x80000000; |
2949 | 0 | insn |= (unsigned long)0x12c8f000; |
2950 | 0 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
2951 | |
|
2952 | 0 | r_type = R_FRV_GOTTLSOFF12; |
2953 | 0 | howto = elf32_frv_howto_table + r_type; |
2954 | 0 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
2955 | 0 | } |
2956 | |
|
2957 | 0 | break; |
2958 | | |
2959 | 0 | case R_FRV_GOTTLSDESC12: |
2960 | 0 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
2961 | | |
2962 | | /* Is this an lddi instruction? */ |
2963 | 0 | if ((insn & (unsigned long)0x01fc0000) != 0x00cc0000) |
2964 | 0 | { |
2965 | 0 | info->callbacks->einfo |
2966 | 0 | (_("%H: R_FRV_GOTTLSDESC12" |
2967 | 0 | " not applied to an lddi instruction\n"), |
2968 | 0 | input_bfd, input_section, rel->r_offset); |
2969 | 0 | return false; |
2970 | 0 | } |
2971 | | |
2972 | 0 | if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, |
2973 | 0 | relocation + rel->r_addend) |
2974 | 0 | && TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, |
2975 | 0 | info)) |
2976 | 0 | { |
2977 | | /* Replace lddi @(grB, #gottlsdesc12(symbol+offset), grC |
2978 | | with setlos #tlsmofflo(symbol+offset), gr<C+1>. |
2979 | | Preserve the packing bit. */ |
2980 | 0 | insn = (insn & (unsigned long)0x80000000) |
2981 | 0 | | ((insn + (unsigned long)0x02000000) |
2982 | 0 | & (unsigned long)0x7e000000); |
2983 | 0 | insn |= (unsigned long)0x00fc0000; |
2984 | 0 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
2985 | |
|
2986 | 0 | r_type = R_FRV_TLSMOFFLO; |
2987 | 0 | howto = elf32_frv_howto_table + r_type; |
2988 | 0 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
2989 | 0 | } |
2990 | | |
2991 | 0 | else if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, |
2992 | 0 | relocation + rel->r_addend)) |
2993 | 0 | { |
2994 | | /* Replace lddi @(grB, #gottlsdesc12(symbol+offset), grC |
2995 | | with sethi #tlsmoffhi(symbol+offset), gr<C+1>. |
2996 | | Preserve the packing bit. */ |
2997 | 0 | insn = (insn & (unsigned long)0x80000000) |
2998 | 0 | | ((insn + (unsigned long)0x02000000) |
2999 | 0 | & (unsigned long)0x7e000000); |
3000 | 0 | insn |= (unsigned long)0x00f80000; |
3001 | 0 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
3002 | |
|
3003 | 0 | r_type = R_FRV_TLSMOFFHI; |
3004 | 0 | howto = elf32_frv_howto_table + r_type; |
3005 | 0 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
3006 | 0 | } |
3007 | | |
3008 | 0 | else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) |
3009 | 0 | { |
3010 | | /* Replace lddi @(grB, #gottlsdesc12(symbol+offset), grC |
3011 | | with ldi @(grB, #gottlsoff12(symbol+offset), |
3012 | | gr<C+1>. Preserve the packing bit. If gottlsoff12 |
3013 | | overflows, we'll error out, but that's sort-of ok, |
3014 | | since we'd started with gottlsdesc12, that's actually |
3015 | | more demanding. Compiling with -fPIE instead of |
3016 | | -fpie would fix it; linking with --relax should fix |
3017 | | it as well. */ |
3018 | 0 | insn = (insn & (unsigned long)0x80cbf000) |
3019 | 0 | | ((insn + (unsigned long)0x02000000) |
3020 | 0 | & (unsigned long)0x7e000000); |
3021 | 0 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
3022 | |
|
3023 | 0 | r_type = R_FRV_GOTTLSOFF12; |
3024 | 0 | howto = elf32_frv_howto_table + r_type; |
3025 | 0 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
3026 | 0 | } |
3027 | |
|
3028 | 0 | break; |
3029 | | |
3030 | 0 | case R_FRV_GOTTLSDESCHI: |
3031 | 0 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
3032 | | |
3033 | | /* Is this a sethi instruction? */ |
3034 | 0 | if ((insn & (unsigned long)0x01ff0000) != 0x00f80000) |
3035 | 0 | { |
3036 | 0 | info->callbacks->einfo |
3037 | 0 | (_("%H: R_FRV_GOTTLSDESCHI" |
3038 | 0 | " not applied to a sethi instruction\n"), |
3039 | 0 | input_bfd, input_section, rel->r_offset); |
3040 | 0 | return false; |
3041 | 0 | } |
3042 | | |
3043 | 0 | if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, |
3044 | 0 | relocation + rel->r_addend) |
3045 | 0 | || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) |
3046 | 0 | && IN_RANGE_FOR_SETLOS_P (picrel->tlsoff_entry))) |
3047 | 0 | { |
3048 | | /* Replace sethi with a nop. Preserve the packing bit. */ |
3049 | 0 | insn &= (unsigned long)0x80000000; |
3050 | 0 | insn |= (unsigned long)0x00880000; |
3051 | 0 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
3052 | | |
3053 | | /* Nothing to relocate. */ |
3054 | 0 | continue; |
3055 | 0 | } |
3056 | | |
3057 | 0 | else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) |
3058 | 0 | { |
3059 | | /* Simply decay GOTTLSDESC to GOTTLSOFF. */ |
3060 | 0 | r_type = R_FRV_GOTTLSOFFHI; |
3061 | 0 | howto = elf32_frv_howto_table + r_type; |
3062 | 0 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
3063 | 0 | } |
3064 | | |
3065 | 0 | break; |
3066 | | |
3067 | 0 | case R_FRV_GOTTLSDESCLO: |
3068 | 0 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
3069 | | |
3070 | | /* Is this a setlo or setlos instruction? */ |
3071 | 0 | if ((insn & (unsigned long)0x01f70000) != 0x00f40000) |
3072 | 0 | { |
3073 | 0 | info->callbacks->einfo |
3074 | 0 | (_("%H: R_FRV_GOTTLSDESCLO" |
3075 | 0 | " not applied to a setlo or setlos instruction\n"), |
3076 | 0 | input_bfd, input_section, rel->r_offset); |
3077 | 0 | return false; |
3078 | 0 | } |
3079 | | |
3080 | 0 | if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, |
3081 | 0 | relocation + rel->r_addend) |
3082 | 0 | || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) |
3083 | 0 | && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry))) |
3084 | 0 | { |
3085 | | /* Replace setlo/setlos with a nop. Preserve the |
3086 | | packing bit. */ |
3087 | 0 | insn &= (unsigned long)0x80000000; |
3088 | 0 | insn |= (unsigned long)0x00880000; |
3089 | 0 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
3090 | | |
3091 | | /* Nothing to relocate. */ |
3092 | 0 | continue; |
3093 | 0 | } |
3094 | | |
3095 | 0 | else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) |
3096 | 0 | { |
3097 | | /* If the corresponding sethi (if it exists) decayed |
3098 | | to a nop, make sure this becomes (or already is) a |
3099 | | setlos, not setlo. */ |
3100 | 0 | if (IN_RANGE_FOR_SETLOS_P (picrel->tlsoff_entry)) |
3101 | 0 | { |
3102 | 0 | insn |= (unsigned long)0x00080000; |
3103 | 0 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
3104 | 0 | } |
3105 | | |
3106 | | /* Simply decay GOTTLSDESC to GOTTLSOFF. */ |
3107 | 0 | r_type = R_FRV_GOTTLSOFFLO; |
3108 | 0 | howto = elf32_frv_howto_table + r_type; |
3109 | 0 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
3110 | 0 | } |
3111 | | |
3112 | 0 | break; |
3113 | | |
3114 | 0 | case R_FRV_TLSDESC_RELAX: |
3115 | 0 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
3116 | | |
3117 | | /* Is this an ldd instruction? */ |
3118 | 0 | if ((insn & (unsigned long)0x01fc0fc0) != 0x00080140) |
3119 | 0 | { |
3120 | 0 | info->callbacks->einfo |
3121 | 0 | (_("%H: R_FRV_TLSDESC_RELAX" |
3122 | 0 | " not applied to an ldd instruction\n"), |
3123 | 0 | input_bfd, input_section, rel->r_offset); |
3124 | 0 | return false; |
3125 | 0 | } |
3126 | | |
3127 | 0 | if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, |
3128 | 0 | relocation + rel->r_addend) |
3129 | 0 | && TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, |
3130 | 0 | info)) |
3131 | 0 | { |
3132 | | /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC |
3133 | | with setlos #tlsmofflo(symbol+offset), gr<C+1>. |
3134 | | Preserve the packing bit. */ |
3135 | 0 | insn = (insn & (unsigned long)0x80000000) |
3136 | 0 | | ((insn + (unsigned long)0x02000000) |
3137 | 0 | & (unsigned long)0x7e000000); |
3138 | 0 | insn |= (unsigned long)0x00fc0000; |
3139 | 0 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
3140 | |
|
3141 | 0 | r_type = R_FRV_TLSMOFFLO; |
3142 | 0 | howto = elf32_frv_howto_table + r_type; |
3143 | 0 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
3144 | 0 | } |
3145 | | |
3146 | 0 | else if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, |
3147 | 0 | relocation + rel->r_addend)) |
3148 | 0 | { |
3149 | | /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC |
3150 | | with sethi #tlsmoffhi(symbol+offset), gr<C+1>. |
3151 | | Preserve the packing bit. */ |
3152 | 0 | insn = (insn & (unsigned long)0x80000000) |
3153 | 0 | | ((insn + (unsigned long)0x02000000) |
3154 | 0 | & (unsigned long)0x7e000000); |
3155 | 0 | insn |= (unsigned long)0x00f80000; |
3156 | 0 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
3157 | |
|
3158 | 0 | r_type = R_FRV_TLSMOFFHI; |
3159 | 0 | howto = elf32_frv_howto_table + r_type; |
3160 | 0 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
3161 | 0 | } |
3162 | | |
3163 | 0 | else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) |
3164 | 0 | && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry)) |
3165 | 0 | { |
3166 | | /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC |
3167 | | with ldi @(grB, #gottlsoff12(symbol+offset), gr<C+1>. |
3168 | | Preserve the packing bit. */ |
3169 | 0 | insn = (insn & (unsigned long)0x8003f000) |
3170 | 0 | | (unsigned long)0x00c80000 |
3171 | 0 | | ((insn + (unsigned long)0x02000000) |
3172 | 0 | & (unsigned long)0x7e000000); |
3173 | 0 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
3174 | |
|
3175 | 0 | r_type = R_FRV_GOTTLSOFF12; |
3176 | 0 | howto = elf32_frv_howto_table + r_type; |
3177 | 0 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
3178 | 0 | } |
3179 | | |
3180 | 0 | else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) |
3181 | 0 | { |
3182 | | /* Replace ldd #tlsdesc(symbol+offset)@(grB, grA), grC |
3183 | | with ld #tlsoff(symbol+offset)@(grB, grA), gr<C+1>. |
3184 | | Preserve the packing bit. */ |
3185 | 0 | insn = (insn & (unsigned long)0x81ffffbf) |
3186 | 0 | | ((insn + (unsigned long)0x02000000) |
3187 | 0 | & (unsigned long)0x7e000000); |
3188 | 0 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
3189 | | |
3190 | | /* #tlsoff(symbol+offset) is just a relaxation |
3191 | | annotation, so there's nothing left to |
3192 | | relocate. */ |
3193 | 0 | continue; |
3194 | 0 | } |
3195 | | |
3196 | 0 | break; |
3197 | | |
3198 | 0 | case R_FRV_GETTLSOFF_RELAX: |
3199 | 0 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
3200 | | |
3201 | | /* Is this a calll or callil instruction? */ |
3202 | 0 | if ((insn & (unsigned long)0x7ff80fc0) != 0x02300000) |
3203 | 0 | { |
3204 | 0 | info->callbacks->einfo |
3205 | 0 | (_("%H: R_FRV_GETTLSOFF_RELAX" |
3206 | 0 | " not applied to a calll instruction\n"), |
3207 | 0 | input_bfd, input_section, rel->r_offset); |
3208 | 0 | return false; |
3209 | 0 | } |
3210 | | |
3211 | 0 | if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, |
3212 | 0 | relocation + rel->r_addend) |
3213 | 0 | && TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, |
3214 | 0 | info)) |
3215 | 0 | { |
3216 | | /* Replace calll with a nop. Preserve the packing bit. */ |
3217 | 0 | insn &= (unsigned long)0x80000000; |
3218 | 0 | insn |= (unsigned long)0x00880000; |
3219 | 0 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
3220 | | |
3221 | | /* Nothing to relocate. */ |
3222 | 0 | continue; |
3223 | 0 | } |
3224 | | |
3225 | 0 | else if (RELAX_TLSDESC_LOCAL_EXEC_P (info, picrel, |
3226 | 0 | relocation + rel->r_addend)) |
3227 | 0 | { |
3228 | | /* Replace calll with setlo #tlsmofflo(symbol+offset), gr9. |
3229 | | Preserve the packing bit. */ |
3230 | 0 | insn &= (unsigned long)0x80000000; |
3231 | 0 | insn |= (unsigned long)0x12f40000; |
3232 | 0 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
3233 | |
|
3234 | 0 | r_type = R_FRV_TLSMOFFLO; |
3235 | 0 | howto = elf32_frv_howto_table + r_type; |
3236 | 0 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
3237 | 0 | } |
3238 | | |
3239 | 0 | else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel)) |
3240 | 0 | { |
3241 | | /* Replace calll with a nop. Preserve the packing bit. */ |
3242 | 0 | insn &= (unsigned long)0x80000000; |
3243 | 0 | insn |= (unsigned long)0x00880000; |
3244 | 0 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
3245 | | |
3246 | | /* Nothing to relocate. */ |
3247 | 0 | continue; |
3248 | 0 | } |
3249 | | |
3250 | 0 | break; |
3251 | | |
3252 | 0 | case R_FRV_GOTTLSOFF12: |
3253 | 0 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
3254 | | |
3255 | | /* Is this an ldi instruction? */ |
3256 | 0 | if ((insn & (unsigned long)0x01fc0000) != 0x00c80000) |
3257 | 0 | { |
3258 | 0 | info->callbacks->einfo |
3259 | 0 | (_("%H: R_FRV_GOTTLSOFF12" |
3260 | 0 | " not applied to an ldi instruction\n"), |
3261 | 0 | input_bfd, input_section, rel->r_offset); |
3262 | 0 | return false; |
3263 | 0 | } |
3264 | | |
3265 | 0 | if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, |
3266 | 0 | relocation + rel->r_addend)) |
3267 | 0 | { |
3268 | | /* Replace ldi @(grB, #gottlsoff12(symbol+offset), grC |
3269 | | with setlos #tlsmofflo(symbol+offset), grC. |
3270 | | Preserve the packing bit. */ |
3271 | 0 | insn &= (unsigned long)0xfe000000; |
3272 | 0 | insn |= (unsigned long)0x00fc0000; |
3273 | 0 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
3274 | |
|
3275 | 0 | r_type = R_FRV_TLSMOFFLO; |
3276 | 0 | howto = elf32_frv_howto_table + r_type; |
3277 | 0 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
3278 | 0 | } |
3279 | |
|
3280 | 0 | break; |
3281 | | |
3282 | 0 | case R_FRV_GOTTLSOFFHI: |
3283 | 0 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
3284 | | |
3285 | | /* Is this a sethi instruction? */ |
3286 | 0 | if ((insn & (unsigned long)0x01ff0000) != 0x00f80000) |
3287 | 0 | { |
3288 | 0 | info->callbacks->einfo |
3289 | 0 | (_("%H: R_FRV_GOTTLSOFFHI" |
3290 | 0 | " not applied to a sethi instruction\n"), |
3291 | 0 | input_bfd, input_section, rel->r_offset); |
3292 | 0 | return false; |
3293 | 0 | } |
3294 | | |
3295 | 0 | if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, |
3296 | 0 | relocation + rel->r_addend) |
3297 | 0 | || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) |
3298 | 0 | && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry))) |
3299 | 0 | { |
3300 | | /* Replace sethi with a nop. Preserve the packing bit. */ |
3301 | 0 | insn &= (unsigned long)0x80000000; |
3302 | 0 | insn |= (unsigned long)0x00880000; |
3303 | 0 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
3304 | | |
3305 | | /* Nothing to relocate. */ |
3306 | 0 | continue; |
3307 | 0 | } |
3308 | | |
3309 | 0 | break; |
3310 | | |
3311 | 0 | case R_FRV_GOTTLSOFFLO: |
3312 | 0 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
3313 | | |
3314 | | /* Is this a setlo or setlos instruction? */ |
3315 | 0 | if ((insn & (unsigned long)0x01f70000) != 0x00f40000) |
3316 | 0 | { |
3317 | 0 | info->callbacks->einfo |
3318 | 0 | (_("%H: R_FRV_GOTTLSOFFLO" |
3319 | 0 | " not applied to a setlo or setlos instruction\n"), |
3320 | 0 | input_bfd, input_section, rel->r_offset); |
3321 | 0 | return false; |
3322 | 0 | } |
3323 | | |
3324 | 0 | if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, |
3325 | 0 | relocation + rel->r_addend) |
3326 | 0 | || (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) |
3327 | 0 | && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry))) |
3328 | 0 | { |
3329 | | /* Replace setlo/setlos with a nop. Preserve the |
3330 | | packing bit. */ |
3331 | 0 | insn &= (unsigned long)0x80000000; |
3332 | 0 | insn |= (unsigned long)0x00880000; |
3333 | 0 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
3334 | | |
3335 | | /* Nothing to relocate. */ |
3336 | 0 | continue; |
3337 | 0 | } |
3338 | | |
3339 | 0 | break; |
3340 | | |
3341 | 0 | case R_FRV_TLSOFF_RELAX: |
3342 | 0 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
3343 | | |
3344 | | /* Is this an ld instruction? */ |
3345 | 0 | if ((insn & (unsigned long)0x01fc0fc0) != 0x00080100) |
3346 | 0 | { |
3347 | 0 | info->callbacks->einfo |
3348 | 0 | (_("%H: R_FRV_TLSOFF_RELAX" |
3349 | 0 | " not applied to an ld instruction\n"), |
3350 | 0 | input_bfd, input_section, rel->r_offset); |
3351 | 0 | return false; |
3352 | 0 | } |
3353 | | |
3354 | 0 | if (RELAX_GOTTLSOFF_LOCAL_EXEC_P (info, picrel, |
3355 | 0 | relocation + rel->r_addend)) |
3356 | 0 | { |
3357 | | /* Replace ld #gottlsoff(symbol+offset)@(grB, grA), grC |
3358 | | with setlos #tlsmofflo(symbol+offset), grC. |
3359 | | Preserve the packing bit. */ |
3360 | 0 | insn &= (unsigned long)0xfe000000; |
3361 | 0 | insn |= (unsigned long)0x00fc0000; |
3362 | 0 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
3363 | |
|
3364 | 0 | r_type = R_FRV_TLSMOFFLO; |
3365 | 0 | howto = elf32_frv_howto_table + r_type; |
3366 | 0 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
3367 | 0 | } |
3368 | | |
3369 | 0 | else if (RELAX_TLSDESC_INITIAL_EXEC_P (info, picrel) |
3370 | 0 | && IN_RANGE_FOR_OFST12_P (picrel->tlsoff_entry)) |
3371 | 0 | { |
3372 | | /* Replace ld #tlsoff(symbol+offset)@(grB, grA), grC |
3373 | | with ldi @(grB, #gottlsoff12(symbol+offset), grC. |
3374 | | Preserve the packing bit. */ |
3375 | 0 | insn = (insn & (unsigned long)0xfe03f000) |
3376 | 0 | | (unsigned long)0x00c80000; |
3377 | 0 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
3378 | |
|
3379 | 0 | r_type = R_FRV_GOTTLSOFF12; |
3380 | 0 | howto = elf32_frv_howto_table + r_type; |
3381 | 0 | rel->r_info = ELF32_R_INFO (r_symndx, r_type); |
3382 | 0 | } |
3383 | |
|
3384 | 0 | break; |
3385 | | |
3386 | 0 | case R_FRV_TLSMOFFHI: |
3387 | 0 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
3388 | | |
3389 | | /* Is this a sethi instruction? */ |
3390 | 0 | if ((insn & (unsigned long)0x01ff0000) != 0x00f80000) |
3391 | 0 | { |
3392 | 0 | info->callbacks->einfo |
3393 | 0 | (_("%H: R_FRV_TLSMOFFHI" |
3394 | 0 | " not applied to a sethi instruction\n"), |
3395 | 0 | input_bfd, input_section, rel->r_offset); |
3396 | 0 | return false; |
3397 | 0 | } |
3398 | | |
3399 | 0 | if (TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, |
3400 | 0 | info)) |
3401 | 0 | { |
3402 | | /* Replace sethi with a nop. Preserve the packing bit. */ |
3403 | 0 | insn &= (unsigned long)0x80000000; |
3404 | 0 | insn |= (unsigned long)0x00880000; |
3405 | 0 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
3406 | | |
3407 | | /* Nothing to relocate. */ |
3408 | 0 | continue; |
3409 | 0 | } |
3410 | | |
3411 | 0 | break; |
3412 | | |
3413 | 0 | case R_FRV_TLSMOFFLO: |
3414 | 0 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
3415 | | |
3416 | | /* Is this a setlo or setlos instruction? */ |
3417 | 0 | if ((insn & (unsigned long)0x01f70000) != 0x00f40000) |
3418 | 0 | { |
3419 | 0 | info->callbacks->einfo |
3420 | 0 | (_("R_FRV_TLSMOFFLO" |
3421 | 0 | " not applied to a setlo or setlos instruction\n"), |
3422 | 0 | input_bfd, input_section, rel->r_offset); |
3423 | 0 | return false; |
3424 | 0 | } |
3425 | | |
3426 | 0 | if (TLSMOFF_IN_RANGE_FOR_SETLOS_P (relocation + rel->r_addend, |
3427 | 0 | info)) |
3428 | | /* If the corresponding sethi (if it exists) decayed |
3429 | | to a nop, make sure this becomes (or already is) a |
3430 | | setlos, not setlo. */ |
3431 | 0 | { |
3432 | 0 | insn |= (unsigned long)0x00080000; |
3433 | 0 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
3434 | 0 | } |
3435 | |
|
3436 | 0 | break; |
3437 | | |
3438 | | /* |
3439 | | There's nothing to relax in these: |
3440 | | R_FRV_TLSDESC_VALUE |
3441 | | R_FRV_TLSOFF |
3442 | | R_FRV_TLSMOFF12 |
3443 | | R_FRV_TLSMOFFHI |
3444 | | R_FRV_TLSMOFFLO |
3445 | | R_FRV_TLSMOFF |
3446 | | */ |
3447 | | |
3448 | 0 | default: |
3449 | 0 | break; |
3450 | 0 | } |
3451 | | |
3452 | 0 | switch (r_type) |
3453 | 0 | { |
3454 | 0 | case R_FRV_LABEL24: |
3455 | 0 | check_segment[0] = isec_segment; |
3456 | 0 | if (! IS_FDPIC (output_bfd)) |
3457 | 0 | check_segment[1] = isec_segment; |
3458 | 0 | else if (picrel->plt) |
3459 | 0 | { |
3460 | 0 | relocation = frvfdpic_plt_section (info)->output_section->vma |
3461 | 0 | + frvfdpic_plt_section (info)->output_offset |
3462 | 0 | + picrel->plt_entry; |
3463 | 0 | check_segment[1] = plt_segment; |
3464 | 0 | } |
3465 | | /* We don't want to warn on calls to undefined weak symbols, |
3466 | | as calls to them must be protected by non-NULL tests |
3467 | | anyway, and unprotected calls would invoke undefined |
3468 | | behavior. */ |
3469 | 0 | else if (picrel->symndx == -1 |
3470 | 0 | && picrel->d.h->root.type == bfd_link_hash_undefweak) |
3471 | 0 | check_segment[1] = check_segment[0]; |
3472 | 0 | else |
3473 | 0 | check_segment[1] = sec |
3474 | 0 | ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) |
3475 | 0 | : (unsigned)-1; |
3476 | 0 | break; |
3477 | | |
3478 | 0 | case R_FRV_GOT12: |
3479 | 0 | case R_FRV_GOTHI: |
3480 | 0 | case R_FRV_GOTLO: |
3481 | 0 | relocation = picrel->got_entry; |
3482 | 0 | check_segment[0] = check_segment[1] = got_segment; |
3483 | 0 | break; |
3484 | | |
3485 | 0 | case R_FRV_FUNCDESC_GOT12: |
3486 | 0 | case R_FRV_FUNCDESC_GOTHI: |
3487 | 0 | case R_FRV_FUNCDESC_GOTLO: |
3488 | 0 | relocation = picrel->fdgot_entry; |
3489 | 0 | check_segment[0] = check_segment[1] = got_segment; |
3490 | 0 | break; |
3491 | | |
3492 | 0 | case R_FRV_GOTOFFHI: |
3493 | 0 | case R_FRV_GOTOFF12: |
3494 | 0 | case R_FRV_GOTOFFLO: |
3495 | 0 | relocation -= frvfdpic_got_section (info)->output_section->vma |
3496 | 0 | + frvfdpic_got_section (info)->output_offset |
3497 | 0 | + frvfdpic_got_initial_offset (info); |
3498 | 0 | check_segment[0] = got_segment; |
3499 | 0 | check_segment[1] = sec |
3500 | 0 | ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) |
3501 | 0 | : (unsigned)-1; |
3502 | 0 | break; |
3503 | | |
3504 | 0 | case R_FRV_FUNCDESC_GOTOFF12: |
3505 | 0 | case R_FRV_FUNCDESC_GOTOFFHI: |
3506 | 0 | case R_FRV_FUNCDESC_GOTOFFLO: |
3507 | 0 | relocation = picrel->fd_entry; |
3508 | 0 | check_segment[0] = check_segment[1] = got_segment; |
3509 | 0 | break; |
3510 | | |
3511 | 0 | case R_FRV_FUNCDESC: |
3512 | 0 | { |
3513 | 0 | int dynindx; |
3514 | 0 | bfd_vma addend = rel->r_addend; |
3515 | |
|
3516 | 0 | if (! (h && h->root.type == bfd_link_hash_undefweak |
3517 | 0 | && FRVFDPIC_SYM_LOCAL (info, h))) |
3518 | 0 | { |
3519 | | /* If the symbol is dynamic and there may be dynamic |
3520 | | symbol resolution because we are or are linked with a |
3521 | | shared library, emit a FUNCDESC relocation such that |
3522 | | the dynamic linker will allocate the function |
3523 | | descriptor. If the symbol needs a non-local function |
3524 | | descriptor but binds locally (e.g., its visibility is |
3525 | | protected, emit a dynamic relocation decayed to |
3526 | | section+offset. */ |
3527 | 0 | if (h && ! FRVFDPIC_FUNCDESC_LOCAL (info, h) |
3528 | 0 | && FRVFDPIC_SYM_LOCAL (info, h) |
3529 | 0 | && !bfd_link_pde (info)) |
3530 | 0 | { |
3531 | 0 | dynindx = elf_section_data (h->root.u.def.section |
3532 | 0 | ->output_section)->dynindx; |
3533 | 0 | addend += h->root.u.def.section->output_offset |
3534 | 0 | + h->root.u.def.value; |
3535 | 0 | } |
3536 | 0 | else if (h && ! FRVFDPIC_FUNCDESC_LOCAL (info, h)) |
3537 | 0 | { |
3538 | 0 | if (addend) |
3539 | 0 | { |
3540 | 0 | info->callbacks->einfo |
3541 | 0 | (_("%H: %s references dynamic symbol" |
3542 | 0 | " with nonzero addend\n"), |
3543 | 0 | input_bfd, input_section, rel->r_offset, |
3544 | 0 | "R_FRV_FUNCDESC"); |
3545 | 0 | return false; |
3546 | 0 | } |
3547 | 0 | dynindx = h->dynindx; |
3548 | 0 | } |
3549 | 0 | else |
3550 | 0 | { |
3551 | | /* Otherwise, we know we have a private function |
3552 | | descriptor, so reference it directly. */ |
3553 | 0 | BFD_ASSERT (picrel->privfd); |
3554 | 0 | r_type = R_FRV_32; |
3555 | 0 | dynindx = elf_section_data (frvfdpic_got_section (info) |
3556 | 0 | ->output_section)->dynindx; |
3557 | 0 | addend = frvfdpic_got_section (info)->output_offset |
3558 | 0 | + frvfdpic_got_initial_offset (info) |
3559 | 0 | + picrel->fd_entry; |
3560 | 0 | } |
3561 | | |
3562 | | /* If there is room for dynamic symbol resolution, emit |
3563 | | the dynamic relocation. However, if we're linking an |
3564 | | executable at a fixed location, we won't have emitted a |
3565 | | dynamic symbol entry for the got section, so idx will |
3566 | | be zero, which means we can and should compute the |
3567 | | address of the private descriptor ourselves. */ |
3568 | 0 | if (bfd_link_pde (info) |
3569 | 0 | && (!h || FRVFDPIC_FUNCDESC_LOCAL (info, h))) |
3570 | 0 | { |
3571 | 0 | addend += frvfdpic_got_section (info)->output_section->vma; |
3572 | 0 | if ((bfd_section_flags (input_section->output_section) |
3573 | 0 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) |
3574 | 0 | { |
3575 | 0 | bfd_vma offset; |
3576 | |
|
3577 | 0 | if (_frvfdpic_osec_readonly_p (output_bfd, |
3578 | 0 | input_section |
3579 | 0 | ->output_section)) |
3580 | 0 | { |
3581 | 0 | info->callbacks->einfo |
3582 | 0 | (_("%H: cannot emit fixups" |
3583 | 0 | " in read-only section\n"), |
3584 | 0 | input_bfd, input_section, rel->r_offset); |
3585 | 0 | return false; |
3586 | 0 | } |
3587 | | |
3588 | 0 | offset = _bfd_elf_section_offset |
3589 | 0 | (output_bfd, info, |
3590 | 0 | input_section, rel->r_offset); |
3591 | |
|
3592 | 0 | if (offset != (bfd_vma)-1) |
3593 | 0 | _frvfdpic_add_rofixup (output_bfd, |
3594 | 0 | frvfdpic_gotfixup_section |
3595 | 0 | (info), |
3596 | 0 | offset + input_section |
3597 | 0 | ->output_section->vma |
3598 | 0 | + input_section->output_offset, |
3599 | 0 | picrel); |
3600 | 0 | } |
3601 | 0 | } |
3602 | 0 | else if ((bfd_section_flags (input_section->output_section) |
3603 | 0 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) |
3604 | 0 | { |
3605 | 0 | bfd_vma offset; |
3606 | |
|
3607 | 0 | if (_frvfdpic_osec_readonly_p (output_bfd, |
3608 | 0 | input_section |
3609 | 0 | ->output_section)) |
3610 | 0 | { |
3611 | 0 | info->callbacks->einfo |
3612 | 0 | (_("%H: cannot emit dynamic relocations" |
3613 | 0 | " in read-only section\n"), |
3614 | 0 | input_bfd, input_section, rel->r_offset); |
3615 | 0 | return false; |
3616 | 0 | } |
3617 | | |
3618 | 0 | offset = _bfd_elf_section_offset |
3619 | 0 | (output_bfd, info, |
3620 | 0 | input_section, rel->r_offset); |
3621 | |
|
3622 | 0 | if (offset != (bfd_vma)-1) |
3623 | 0 | _frvfdpic_add_dyn_reloc (output_bfd, |
3624 | 0 | frvfdpic_gotrel_section (info), |
3625 | 0 | offset + input_section |
3626 | 0 | ->output_section->vma |
3627 | 0 | + input_section->output_offset, |
3628 | 0 | r_type, dynindx, addend, picrel); |
3629 | 0 | } |
3630 | 0 | else |
3631 | 0 | addend += frvfdpic_got_section (info)->output_section->vma; |
3632 | 0 | } |
3633 | | |
3634 | | /* We want the addend in-place because dynamic |
3635 | | relocations are REL. Setting relocation to it should |
3636 | | arrange for it to be installed. */ |
3637 | 0 | relocation = addend - rel->r_addend; |
3638 | 0 | } |
3639 | 0 | check_segment[0] = check_segment[1] = got_segment; |
3640 | 0 | break; |
3641 | | |
3642 | 0 | case R_FRV_32: |
3643 | 0 | if (! IS_FDPIC (output_bfd)) |
3644 | 0 | { |
3645 | 0 | check_segment[0] = check_segment[1] = -1; |
3646 | 0 | break; |
3647 | 0 | } |
3648 | | /* Fall through. */ |
3649 | 0 | case R_FRV_FUNCDESC_VALUE: |
3650 | 0 | { |
3651 | 0 | int dynindx; |
3652 | 0 | bfd_vma addend = rel->r_addend; |
3653 | | |
3654 | | /* If the symbol is dynamic but binds locally, use |
3655 | | section+offset. */ |
3656 | 0 | if (h && ! FRVFDPIC_SYM_LOCAL (info, h)) |
3657 | 0 | { |
3658 | 0 | if (addend && r_type == R_FRV_FUNCDESC_VALUE) |
3659 | 0 | { |
3660 | 0 | info->callbacks->einfo |
3661 | 0 | (_("%H: %s references dynamic symbol" |
3662 | 0 | " with nonzero addend\n"), |
3663 | 0 | input_bfd, input_section, rel->r_offset, |
3664 | 0 | "R_FRV_FUNCDESC_VALUE"); |
3665 | 0 | return false; |
3666 | 0 | } |
3667 | 0 | dynindx = h->dynindx; |
3668 | 0 | } |
3669 | 0 | else |
3670 | 0 | { |
3671 | 0 | if (h) |
3672 | 0 | addend += h->root.u.def.value; |
3673 | 0 | else |
3674 | 0 | addend += sym->st_value; |
3675 | 0 | if (osec) |
3676 | 0 | addend += osec->output_offset; |
3677 | 0 | if (osec && osec->output_section |
3678 | 0 | && ! bfd_is_abs_section (osec->output_section) |
3679 | 0 | && ! bfd_is_und_section (osec->output_section)) |
3680 | 0 | dynindx = elf_section_data (osec->output_section)->dynindx; |
3681 | 0 | else |
3682 | 0 | dynindx = 0; |
3683 | 0 | } |
3684 | | |
3685 | | /* If we're linking an executable at a fixed address, we |
3686 | | can omit the dynamic relocation as long as the symbol |
3687 | | is defined in the current link unit (which is implied |
3688 | | by its output section not being NULL). */ |
3689 | 0 | if (bfd_link_pde (info) |
3690 | 0 | && (!h || FRVFDPIC_SYM_LOCAL (info, h))) |
3691 | 0 | { |
3692 | 0 | if (osec) |
3693 | 0 | addend += osec->output_section->vma; |
3694 | 0 | if (IS_FDPIC (input_bfd) |
3695 | 0 | && (bfd_section_flags (input_section->output_section) |
3696 | 0 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) |
3697 | 0 | { |
3698 | 0 | if (_frvfdpic_osec_readonly_p (output_bfd, |
3699 | 0 | input_section |
3700 | 0 | ->output_section)) |
3701 | 0 | { |
3702 | 0 | info->callbacks->einfo |
3703 | 0 | (_("%H: cannot emit fixups in read-only section\n"), |
3704 | 0 | input_bfd, input_section, rel->r_offset); |
3705 | 0 | return false; |
3706 | 0 | } |
3707 | 0 | if (!h || h->root.type != bfd_link_hash_undefweak) |
3708 | 0 | { |
3709 | 0 | bfd_vma offset = _bfd_elf_section_offset |
3710 | 0 | (output_bfd, info, |
3711 | 0 | input_section, rel->r_offset); |
3712 | |
|
3713 | 0 | if (offset != (bfd_vma)-1) |
3714 | 0 | { |
3715 | 0 | _frvfdpic_add_rofixup (output_bfd, |
3716 | 0 | frvfdpic_gotfixup_section |
3717 | 0 | (info), |
3718 | 0 | offset + input_section |
3719 | 0 | ->output_section->vma |
3720 | 0 | + input_section->output_offset, |
3721 | 0 | picrel); |
3722 | 0 | if (r_type == R_FRV_FUNCDESC_VALUE) |
3723 | 0 | _frvfdpic_add_rofixup |
3724 | 0 | (output_bfd, |
3725 | 0 | frvfdpic_gotfixup_section (info), |
3726 | 0 | offset |
3727 | 0 | + input_section->output_section->vma |
3728 | 0 | + input_section->output_offset + 4, picrel); |
3729 | 0 | } |
3730 | 0 | } |
3731 | 0 | } |
3732 | 0 | } |
3733 | 0 | else |
3734 | 0 | { |
3735 | 0 | if ((bfd_section_flags (input_section->output_section) |
3736 | 0 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) |
3737 | 0 | { |
3738 | 0 | bfd_vma offset; |
3739 | |
|
3740 | 0 | if (_frvfdpic_osec_readonly_p (output_bfd, |
3741 | 0 | input_section |
3742 | 0 | ->output_section)) |
3743 | 0 | { |
3744 | 0 | info->callbacks->einfo |
3745 | 0 | (_("%H: cannot emit dynamic relocations" |
3746 | 0 | " in read-only section\n"), |
3747 | 0 | input_bfd, input_section, rel->r_offset); |
3748 | 0 | return false; |
3749 | 0 | } |
3750 | | |
3751 | 0 | offset = _bfd_elf_section_offset |
3752 | 0 | (output_bfd, info, |
3753 | 0 | input_section, rel->r_offset); |
3754 | |
|
3755 | 0 | if (offset != (bfd_vma)-1) |
3756 | 0 | _frvfdpic_add_dyn_reloc (output_bfd, |
3757 | 0 | frvfdpic_gotrel_section (info), |
3758 | 0 | offset + input_section |
3759 | 0 | ->output_section->vma |
3760 | 0 | + input_section->output_offset, |
3761 | 0 | r_type, dynindx, addend, picrel); |
3762 | 0 | } |
3763 | 0 | else if (osec) |
3764 | 0 | addend += osec->output_section->vma; |
3765 | | /* We want the addend in-place because dynamic |
3766 | | relocations are REL. Setting relocation to it |
3767 | | should arrange for it to be installed. */ |
3768 | 0 | relocation = addend - rel->r_addend; |
3769 | 0 | } |
3770 | | |
3771 | 0 | if (r_type == R_FRV_FUNCDESC_VALUE) |
3772 | 0 | { |
3773 | | /* If we've omitted the dynamic relocation, just emit |
3774 | | the fixed addresses of the symbol and of the local |
3775 | | GOT base offset. */ |
3776 | 0 | if (bfd_link_pde (info) |
3777 | 0 | && (!h || FRVFDPIC_SYM_LOCAL (info, h))) |
3778 | 0 | bfd_put_32 (output_bfd, |
3779 | 0 | frvfdpic_got_section (info)->output_section->vma |
3780 | 0 | + frvfdpic_got_section (info)->output_offset |
3781 | 0 | + frvfdpic_got_initial_offset (info), |
3782 | 0 | contents + rel->r_offset + 4); |
3783 | 0 | else |
3784 | | /* A function descriptor used for lazy or local |
3785 | | resolving is initialized such that its high word |
3786 | | contains the output section index in which the |
3787 | | PLT entries are located, and the low word |
3788 | | contains the offset of the lazy PLT entry entry |
3789 | | point into that section. */ |
3790 | 0 | bfd_put_32 (output_bfd, |
3791 | 0 | h && ! FRVFDPIC_SYM_LOCAL (info, h) |
3792 | 0 | ? 0 |
3793 | 0 | : _frvfdpic_osec_to_segment (output_bfd, |
3794 | 0 | sec |
3795 | 0 | ->output_section), |
3796 | 0 | contents + rel->r_offset + 4); |
3797 | 0 | } |
3798 | 0 | } |
3799 | 0 | check_segment[0] = check_segment[1] = got_segment; |
3800 | 0 | break; |
3801 | | |
3802 | 0 | case R_FRV_GPREL12: |
3803 | 0 | case R_FRV_GPRELU12: |
3804 | 0 | case R_FRV_GPREL32: |
3805 | 0 | case R_FRV_GPRELHI: |
3806 | 0 | case R_FRV_GPRELLO: |
3807 | 0 | check_segment[0] = gprel_segment; |
3808 | 0 | check_segment[1] = sec |
3809 | 0 | ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) |
3810 | 0 | : (unsigned)-1; |
3811 | 0 | break; |
3812 | | |
3813 | 0 | case R_FRV_GETTLSOFF: |
3814 | 0 | relocation = frvfdpic_plt_section (info)->output_section->vma |
3815 | 0 | + frvfdpic_plt_section (info)->output_offset |
3816 | 0 | + picrel->tlsplt_entry; |
3817 | 0 | BFD_ASSERT (picrel->tlsplt_entry != (bfd_vma)-1 |
3818 | 0 | && picrel->tlsdesc_entry); |
3819 | 0 | check_segment[0] = isec_segment; |
3820 | 0 | check_segment[1] = plt_segment; |
3821 | 0 | break; |
3822 | | |
3823 | 0 | case R_FRV_GOTTLSDESC12: |
3824 | 0 | case R_FRV_GOTTLSDESCHI: |
3825 | 0 | case R_FRV_GOTTLSDESCLO: |
3826 | 0 | BFD_ASSERT (picrel->tlsdesc_entry); |
3827 | 0 | relocation = picrel->tlsdesc_entry; |
3828 | 0 | check_segment[0] = tls_segment; |
3829 | 0 | check_segment[1] = sec |
3830 | 0 | && ! bfd_is_abs_section (sec) |
3831 | 0 | && ! bfd_is_und_section (sec) |
3832 | 0 | ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) |
3833 | 0 | : tls_segment; |
3834 | 0 | break; |
3835 | | |
3836 | 0 | case R_FRV_TLSMOFF12: |
3837 | 0 | case R_FRV_TLSMOFFHI: |
3838 | 0 | case R_FRV_TLSMOFFLO: |
3839 | 0 | case R_FRV_TLSMOFF: |
3840 | 0 | check_segment[0] = tls_segment; |
3841 | 0 | if (! sec) |
3842 | 0 | check_segment[1] = -1; |
3843 | 0 | else if (bfd_is_abs_section (sec) |
3844 | 0 | || bfd_is_und_section (sec)) |
3845 | 0 | { |
3846 | 0 | relocation = 0; |
3847 | 0 | check_segment[1] = tls_segment; |
3848 | 0 | } |
3849 | 0 | else if (sec->output_section) |
3850 | 0 | { |
3851 | 0 | relocation -= tls_biased_base (info); |
3852 | 0 | check_segment[1] = |
3853 | 0 | _frvfdpic_osec_to_segment (output_bfd, sec->output_section); |
3854 | 0 | } |
3855 | 0 | else |
3856 | 0 | check_segment[1] = -1; |
3857 | 0 | break; |
3858 | | |
3859 | 0 | case R_FRV_GOTTLSOFF12: |
3860 | 0 | case R_FRV_GOTTLSOFFHI: |
3861 | 0 | case R_FRV_GOTTLSOFFLO: |
3862 | 0 | BFD_ASSERT (picrel->tlsoff_entry); |
3863 | 0 | relocation = picrel->tlsoff_entry; |
3864 | 0 | check_segment[0] = tls_segment; |
3865 | 0 | check_segment[1] = sec |
3866 | 0 | && ! bfd_is_abs_section (sec) |
3867 | 0 | && ! bfd_is_und_section (sec) |
3868 | 0 | ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) |
3869 | 0 | : tls_segment; |
3870 | 0 | break; |
3871 | | |
3872 | 0 | case R_FRV_TLSDESC_VALUE: |
3873 | 0 | case R_FRV_TLSOFF: |
3874 | | /* These shouldn't be present in input object files. */ |
3875 | 0 | check_segment[0] = check_segment[1] = isec_segment; |
3876 | 0 | break; |
3877 | | |
3878 | 0 | case R_FRV_TLSDESC_RELAX: |
3879 | 0 | case R_FRV_GETTLSOFF_RELAX: |
3880 | 0 | case R_FRV_TLSOFF_RELAX: |
3881 | | /* These are just annotations for relaxation, nothing to do |
3882 | | here. */ |
3883 | 0 | continue; |
3884 | | |
3885 | 0 | default: |
3886 | 0 | check_segment[0] = isec_segment; |
3887 | 0 | check_segment[1] = sec |
3888 | 0 | ? _frvfdpic_osec_to_segment (output_bfd, sec->output_section) |
3889 | 0 | : (unsigned)-1; |
3890 | 0 | break; |
3891 | 0 | } |
3892 | | |
3893 | 0 | if (check_segment[0] != check_segment[1] && IS_FDPIC (output_bfd)) |
3894 | 0 | { |
3895 | | /* If you take this out, remove the #error from fdpic-static-6.d |
3896 | | in the ld testsuite. */ |
3897 | | /* This helps catch problems in GCC while we can't do more |
3898 | | than static linking. The idea is to test whether the |
3899 | | input file basename is crt0.o only once. */ |
3900 | 0 | if (silence_segment_error == 1) |
3901 | 0 | silence_segment_error = |
3902 | 0 | (strlen (bfd_get_filename (input_bfd)) == 6 |
3903 | 0 | && filename_cmp (bfd_get_filename (input_bfd), "crt0.o") == 0) |
3904 | 0 | || (strlen (bfd_get_filename (input_bfd)) > 6 |
3905 | 0 | && filename_cmp (bfd_get_filename (input_bfd) |
3906 | 0 | + strlen (bfd_get_filename (input_bfd)) - 7, |
3907 | 0 | "/crt0.o") == 0) |
3908 | 0 | ? -1 : 0; |
3909 | 0 | if (!silence_segment_error |
3910 | | /* We don't want duplicate errors for undefined |
3911 | | symbols. */ |
3912 | 0 | && !(picrel && picrel->symndx == -1 |
3913 | 0 | && picrel->d.h->root.type == bfd_link_hash_undefined)) |
3914 | 0 | { |
3915 | 0 | info->callbacks->einfo |
3916 | | /* xgettext:c-format */ |
3917 | 0 | (_("%H: reloc against `%s' references a different segment\n"), |
3918 | 0 | input_bfd, input_section, rel->r_offset, name); |
3919 | 0 | } |
3920 | 0 | if (!silence_segment_error && bfd_link_pic (info)) |
3921 | 0 | return false; |
3922 | 0 | elf_elfheader (output_bfd)->e_flags |= EF_FRV_PIC; |
3923 | 0 | } |
3924 | | |
3925 | 0 | switch (r_type) |
3926 | 0 | { |
3927 | 0 | case R_FRV_GOTOFFHI: |
3928 | 0 | case R_FRV_TLSMOFFHI: |
3929 | | /* We need the addend to be applied before we shift the |
3930 | | value right. */ |
3931 | 0 | relocation += rel->r_addend; |
3932 | | /* Fall through. */ |
3933 | 0 | case R_FRV_GOTHI: |
3934 | 0 | case R_FRV_FUNCDESC_GOTHI: |
3935 | 0 | case R_FRV_FUNCDESC_GOTOFFHI: |
3936 | 0 | case R_FRV_GOTTLSOFFHI: |
3937 | 0 | case R_FRV_GOTTLSDESCHI: |
3938 | 0 | relocation >>= 16; |
3939 | | /* Fall through. */ |
3940 | |
|
3941 | 0 | case R_FRV_GOTLO: |
3942 | 0 | case R_FRV_FUNCDESC_GOTLO: |
3943 | 0 | case R_FRV_GOTOFFLO: |
3944 | 0 | case R_FRV_FUNCDESC_GOTOFFLO: |
3945 | 0 | case R_FRV_GOTTLSOFFLO: |
3946 | 0 | case R_FRV_GOTTLSDESCLO: |
3947 | 0 | case R_FRV_TLSMOFFLO: |
3948 | 0 | relocation &= 0xffff; |
3949 | 0 | break; |
3950 | | |
3951 | 0 | default: |
3952 | 0 | break; |
3953 | 0 | } |
3954 | | |
3955 | 0 | switch (r_type) |
3956 | 0 | { |
3957 | 0 | case R_FRV_LABEL24: |
3958 | 0 | if (! IS_FDPIC (output_bfd) || ! picrel->plt) |
3959 | 0 | break; |
3960 | | /* Fall through. */ |
3961 | | |
3962 | | /* When referencing a GOT entry, a function descriptor or a |
3963 | | PLT, we don't want the addend to apply to the reference, |
3964 | | but rather to the referenced symbol. The actual entry |
3965 | | will have already been created taking the addend into |
3966 | | account, so cancel it out here. */ |
3967 | 0 | case R_FRV_GOT12: |
3968 | 0 | case R_FRV_GOTHI: |
3969 | 0 | case R_FRV_GOTLO: |
3970 | 0 | case R_FRV_FUNCDESC_GOT12: |
3971 | 0 | case R_FRV_FUNCDESC_GOTHI: |
3972 | 0 | case R_FRV_FUNCDESC_GOTLO: |
3973 | 0 | case R_FRV_FUNCDESC_GOTOFF12: |
3974 | 0 | case R_FRV_FUNCDESC_GOTOFFHI: |
3975 | 0 | case R_FRV_FUNCDESC_GOTOFFLO: |
3976 | 0 | case R_FRV_GETTLSOFF: |
3977 | 0 | case R_FRV_GOTTLSDESC12: |
3978 | 0 | case R_FRV_GOTTLSDESCHI: |
3979 | 0 | case R_FRV_GOTTLSDESCLO: |
3980 | 0 | case R_FRV_GOTTLSOFF12: |
3981 | 0 | case R_FRV_GOTTLSOFFHI: |
3982 | 0 | case R_FRV_GOTTLSOFFLO: |
3983 | | /* Note that we only want GOTOFFHI, not GOTOFFLO or GOTOFF12 |
3984 | | here, since we do want to apply the addend to the others. |
3985 | | Note that we've applied the addend to GOTOFFHI before we |
3986 | | shifted it right. */ |
3987 | 0 | case R_FRV_GOTOFFHI: |
3988 | 0 | case R_FRV_TLSMOFFHI: |
3989 | 0 | relocation -= rel->r_addend; |
3990 | 0 | break; |
3991 | | |
3992 | 0 | default: |
3993 | 0 | break; |
3994 | 0 | } |
3995 | | |
3996 | 0 | if (r_type == R_FRV_HI16) |
3997 | 0 | r = elf32_frv_relocate_hi16 (input_bfd, rel, contents, relocation); |
3998 | | |
3999 | 0 | else if (r_type == R_FRV_LO16) |
4000 | 0 | r = elf32_frv_relocate_lo16 (input_bfd, rel, contents, relocation); |
4001 | | |
4002 | 0 | else if (r_type == R_FRV_LABEL24 || r_type == R_FRV_GETTLSOFF) |
4003 | 0 | r = elf32_frv_relocate_label24 (input_bfd, input_section, rel, |
4004 | 0 | contents, relocation); |
4005 | | |
4006 | 0 | else if (r_type == R_FRV_GPREL12) |
4007 | 0 | r = elf32_frv_relocate_gprel12 (info, input_bfd, input_section, rel, |
4008 | 0 | contents, relocation); |
4009 | | |
4010 | 0 | else if (r_type == R_FRV_GPRELU12) |
4011 | 0 | r = elf32_frv_relocate_gprelu12 (info, input_bfd, input_section, rel, |
4012 | 0 | contents, relocation); |
4013 | | |
4014 | 0 | else if (r_type == R_FRV_GPRELLO) |
4015 | 0 | r = elf32_frv_relocate_gprello (info, input_bfd, input_section, rel, |
4016 | 0 | contents, relocation); |
4017 | | |
4018 | 0 | else if (r_type == R_FRV_GPRELHI) |
4019 | 0 | r = elf32_frv_relocate_gprelhi (info, input_bfd, input_section, rel, |
4020 | 0 | contents, relocation); |
4021 | | |
4022 | 0 | else if (r_type == R_FRV_TLSOFF |
4023 | 0 | || r_type == R_FRV_TLSDESC_VALUE) |
4024 | 0 | r = bfd_reloc_notsupported; |
4025 | | |
4026 | 0 | else |
4027 | 0 | r = frv_final_link_relocate (howto, input_bfd, input_section, contents, |
4028 | 0 | rel, relocation); |
4029 | |
|
4030 | 0 | if (r != bfd_reloc_ok) |
4031 | 0 | { |
4032 | 0 | const char * msg = (const char *) NULL; |
4033 | |
|
4034 | 0 | switch (r) |
4035 | 0 | { |
4036 | 0 | case bfd_reloc_overflow: |
4037 | 0 | (*info->callbacks->reloc_overflow) |
4038 | 0 | (info, (h ? &h->root : NULL), name, howto->name, |
4039 | 0 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); |
4040 | 0 | break; |
4041 | | |
4042 | 0 | case bfd_reloc_undefined: |
4043 | 0 | (*info->callbacks->undefined_symbol) |
4044 | 0 | (info, name, input_bfd, input_section, rel->r_offset, true); |
4045 | 0 | break; |
4046 | | |
4047 | 0 | case bfd_reloc_outofrange: |
4048 | 0 | msg = _("internal error: out of range error"); |
4049 | 0 | break; |
4050 | | |
4051 | 0 | case bfd_reloc_notsupported: |
4052 | 0 | msg = _("internal error: unsupported relocation error"); |
4053 | 0 | break; |
4054 | | |
4055 | 0 | case bfd_reloc_dangerous: |
4056 | 0 | msg = _("internal error: dangerous relocation"); |
4057 | 0 | break; |
4058 | | |
4059 | 0 | default: |
4060 | 0 | msg = _("internal error: unknown error"); |
4061 | 0 | break; |
4062 | 0 | } |
4063 | | |
4064 | 0 | if (msg) |
4065 | 0 | { |
4066 | 0 | info->callbacks->einfo |
4067 | | /* xgettext:c-format */ |
4068 | 0 | (_("%H: reloc against `%s': %s\n"), |
4069 | 0 | input_bfd, input_section, rel->r_offset, name, msg); |
4070 | 0 | return false; |
4071 | 0 | } |
4072 | 0 | } |
4073 | 0 | } |
4074 | | |
4075 | 0 | return true; |
4076 | 0 | } |
4077 | | |
4078 | | /* Return the section that should be marked against GC for a given |
4079 | | relocation. */ |
4080 | | |
4081 | | static asection * |
4082 | | elf32_frv_gc_mark_hook (asection *sec, |
4083 | | struct bfd_link_info *info, |
4084 | | Elf_Internal_Rela *rel, |
4085 | | struct elf_link_hash_entry *h, |
4086 | | Elf_Internal_Sym *sym) |
4087 | 0 | { |
4088 | 0 | if (h != NULL) |
4089 | 0 | switch (ELF32_R_TYPE (rel->r_info)) |
4090 | 0 | { |
4091 | 0 | case R_FRV_GNU_VTINHERIT: |
4092 | 0 | case R_FRV_GNU_VTENTRY: |
4093 | 0 | return NULL; |
4094 | 0 | } |
4095 | | |
4096 | 0 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
4097 | 0 | } |
4098 | | |
4099 | | /* Hook called by the linker routine which adds symbols from an object |
4100 | | file. We use it to put .comm items in .scomm, and not .comm. */ |
4101 | | |
4102 | | static bool |
4103 | | elf32_frv_add_symbol_hook (bfd *abfd, |
4104 | | struct bfd_link_info *info, |
4105 | | Elf_Internal_Sym *sym, |
4106 | | const char **namep ATTRIBUTE_UNUSED, |
4107 | | flagword *flagsp ATTRIBUTE_UNUSED, |
4108 | | asection **secp, |
4109 | | bfd_vma *valp) |
4110 | 0 | { |
4111 | 0 | if (sym->st_shndx == SHN_COMMON |
4112 | 0 | && !bfd_link_relocatable (info) |
4113 | 0 | && (int)sym->st_size <= (int)bfd_get_gp_size (abfd)) |
4114 | 0 | { |
4115 | | /* Common symbols less than or equal to -G nn bytes are |
4116 | | automatically put into .sbss. */ |
4117 | |
|
4118 | 0 | asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); |
4119 | |
|
4120 | 0 | if (scomm == NULL) |
4121 | 0 | { |
4122 | 0 | scomm = bfd_make_section_with_flags (abfd, ".scommon", |
4123 | 0 | (SEC_ALLOC |
4124 | 0 | | SEC_IS_COMMON |
4125 | 0 | | SEC_SMALL_DATA |
4126 | 0 | | SEC_LINKER_CREATED)); |
4127 | 0 | if (scomm == NULL) |
4128 | 0 | return false; |
4129 | 0 | } |
4130 | | |
4131 | 0 | *secp = scomm; |
4132 | 0 | *valp = sym->st_size; |
4133 | 0 | } |
4134 | | |
4135 | 0 | return true; |
4136 | 0 | } |
4137 | | |
4138 | | /* We need dynamic symbols for every section, since segments can |
4139 | | relocate independently. */ |
4140 | | static bool |
4141 | | _frvfdpic_link_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED, |
4142 | | struct bfd_link_info *info |
4143 | | ATTRIBUTE_UNUSED, |
4144 | | asection *p ATTRIBUTE_UNUSED) |
4145 | 0 | { |
4146 | 0 | switch (elf_section_data (p)->this_hdr.sh_type) |
4147 | 0 | { |
4148 | 0 | case SHT_PROGBITS: |
4149 | 0 | case SHT_NOBITS: |
4150 | | /* If sh_type is yet undecided, assume it could be |
4151 | | SHT_PROGBITS/SHT_NOBITS. */ |
4152 | 0 | case SHT_NULL: |
4153 | 0 | return false; |
4154 | | |
4155 | | /* There shouldn't be section relative relocations |
4156 | | against any other section. */ |
4157 | 0 | default: |
4158 | 0 | return true; |
4159 | 0 | } |
4160 | 0 | } |
4161 | | |
4162 | | /* Create a .got section, as well as its additional info field. This |
4163 | | is almost entirely copied from |
4164 | | elflink.c:_bfd_elf_create_got_section(). */ |
4165 | | |
4166 | | static bool |
4167 | | _frv_create_got_section (bfd *abfd, struct bfd_link_info *info) |
4168 | 0 | { |
4169 | 0 | flagword flags, pltflags; |
4170 | 0 | asection *s; |
4171 | 0 | struct elf_link_hash_entry *h; |
4172 | 0 | struct bfd_link_hash_entry *bh; |
4173 | 0 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
4174 | 0 | int ptralign; |
4175 | 0 | int offset; |
4176 | | |
4177 | | /* This function may be called more than once. */ |
4178 | 0 | s = elf_hash_table (info)->sgot; |
4179 | 0 | if (s != NULL) |
4180 | 0 | return true; |
4181 | | |
4182 | | /* Machine specific: although pointers are 32-bits wide, we want the |
4183 | | GOT to be aligned to a 64-bit boundary, such that function |
4184 | | descriptors in it can be accessed with 64-bit loads and |
4185 | | stores. */ |
4186 | 0 | ptralign = 3; |
4187 | |
|
4188 | 0 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
4189 | 0 | | SEC_LINKER_CREATED); |
4190 | 0 | pltflags = flags; |
4191 | |
|
4192 | 0 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
4193 | 0 | elf_hash_table (info)->sgot = s; |
4194 | 0 | if (s == NULL |
4195 | 0 | || !bfd_set_section_alignment (s, ptralign)) |
4196 | 0 | return false; |
4197 | | |
4198 | 0 | if (bed->want_got_sym) |
4199 | 0 | { |
4200 | | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got |
4201 | | (or .got.plt) section. We don't do this in the linker script |
4202 | | because we don't want to define the symbol if we are not creating |
4203 | | a global offset table. */ |
4204 | 0 | h = _bfd_elf_define_linkage_sym (abfd, info, s, "_GLOBAL_OFFSET_TABLE_"); |
4205 | 0 | elf_hash_table (info)->hgot = h; |
4206 | 0 | if (h == NULL) |
4207 | 0 | return false; |
4208 | | |
4209 | | /* Machine-specific: we want the symbol for executables as |
4210 | | well. */ |
4211 | 0 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
4212 | 0 | return false; |
4213 | 0 | } |
4214 | | |
4215 | | /* The first bit of the global offset table is the header. */ |
4216 | 0 | s->size += bed->got_header_size; |
4217 | | |
4218 | | /* This is the machine-specific part. Create and initialize section |
4219 | | data for the got. */ |
4220 | 0 | if (IS_FDPIC (abfd)) |
4221 | 0 | { |
4222 | 0 | frvfdpic_relocs_info (info) = htab_try_create (1, |
4223 | 0 | frvfdpic_relocs_info_hash, |
4224 | 0 | frvfdpic_relocs_info_eq, |
4225 | 0 | (htab_del) NULL); |
4226 | 0 | if (! frvfdpic_relocs_info (info)) |
4227 | 0 | return false; |
4228 | | |
4229 | 0 | s = bfd_make_section_anyway_with_flags (abfd, ".rel.got", |
4230 | 0 | (flags | SEC_READONLY)); |
4231 | 0 | elf_hash_table (info)->srelgot = s; |
4232 | 0 | if (s == NULL |
4233 | 0 | || !bfd_set_section_alignment (s, 2)) |
4234 | 0 | return false; |
4235 | | |
4236 | | /* Machine-specific. */ |
4237 | 0 | s = bfd_make_section_anyway_with_flags (abfd, ".rofixup", |
4238 | 0 | (flags | SEC_READONLY)); |
4239 | 0 | if (s == NULL |
4240 | 0 | || !bfd_set_section_alignment (s, 2)) |
4241 | 0 | return false; |
4242 | | |
4243 | 0 | frvfdpic_gotfixup_section (info) = s; |
4244 | 0 | offset = -2048; |
4245 | 0 | flags = BSF_GLOBAL; |
4246 | 0 | } |
4247 | 0 | else |
4248 | 0 | { |
4249 | 0 | offset = 2048; |
4250 | 0 | flags = BSF_GLOBAL | BSF_WEAK; |
4251 | 0 | } |
4252 | | |
4253 | | /* Define _gp in .rofixup, for FDPIC, or .got otherwise. If it |
4254 | | turns out that we're linking with a different linker script, the |
4255 | | linker script will override it. */ |
4256 | 0 | bh = NULL; |
4257 | 0 | if (!(_bfd_generic_link_add_one_symbol |
4258 | 0 | (info, abfd, "_gp", flags, s, offset, (const char *) NULL, false, |
4259 | 0 | bed->collect, &bh))) |
4260 | 0 | return false; |
4261 | 0 | h = (struct elf_link_hash_entry *) bh; |
4262 | 0 | h->def_regular = 1; |
4263 | 0 | h->type = STT_OBJECT; |
4264 | | /* h->other = STV_HIDDEN; */ /* Should we? */ |
4265 | | |
4266 | | /* Machine-specific: we want the symbol for executables as well. */ |
4267 | 0 | if (IS_FDPIC (abfd) && ! bfd_elf_link_record_dynamic_symbol (info, h)) |
4268 | 0 | return false; |
4269 | | |
4270 | 0 | if (!IS_FDPIC (abfd)) |
4271 | 0 | return true; |
4272 | | |
4273 | | /* FDPIC supports Thread Local Storage, and this may require a |
4274 | | procedure linkage table for TLS PLT entries. */ |
4275 | | |
4276 | | /* This is mostly copied from |
4277 | | elflink.c:_bfd_elf_create_dynamic_sections(). */ |
4278 | | |
4279 | 0 | flags = pltflags; |
4280 | 0 | pltflags |= SEC_CODE; |
4281 | 0 | if (bed->plt_not_loaded) |
4282 | 0 | pltflags &= ~ (SEC_CODE | SEC_LOAD | SEC_HAS_CONTENTS); |
4283 | 0 | if (bed->plt_readonly) |
4284 | 0 | pltflags |= SEC_READONLY; |
4285 | |
|
4286 | 0 | s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags); |
4287 | 0 | if (s == NULL |
4288 | 0 | || !bfd_set_section_alignment (s, bed->plt_alignment)) |
4289 | 0 | return false; |
4290 | | /* FRV-specific: remember it. */ |
4291 | 0 | frvfdpic_plt_section (info) = s; |
4292 | | |
4293 | | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the |
4294 | | .plt section. */ |
4295 | 0 | if (bed->want_plt_sym) |
4296 | 0 | { |
4297 | 0 | h = _bfd_elf_define_linkage_sym (abfd, info, s, |
4298 | 0 | "_PROCEDURE_LINKAGE_TABLE_"); |
4299 | 0 | elf_hash_table (info)->hplt = h; |
4300 | 0 | if (h == NULL) |
4301 | 0 | return false; |
4302 | 0 | } |
4303 | | |
4304 | | /* FRV-specific: we want rel relocations for the plt. */ |
4305 | 0 | s = bfd_make_section_anyway_with_flags (abfd, ".rel.plt", |
4306 | 0 | flags | SEC_READONLY); |
4307 | 0 | if (s == NULL |
4308 | 0 | || !bfd_set_section_alignment (s, bed->s->log_file_align)) |
4309 | 0 | return false; |
4310 | | /* FRV-specific: remember it. */ |
4311 | 0 | frvfdpic_pltrel_section (info) = s; |
4312 | |
|
4313 | 0 | return true; |
4314 | 0 | } |
4315 | | |
4316 | | /* Make sure the got and plt sections exist, and that our pointers in |
4317 | | the link hash table point to them. */ |
4318 | | |
4319 | | static bool |
4320 | | elf32_frvfdpic_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) |
4321 | 0 | { |
4322 | | /* This is mostly copied from |
4323 | | elflink.c:_bfd_elf_create_dynamic_sections(). */ |
4324 | 0 | flagword flags; |
4325 | 0 | asection *s; |
4326 | 0 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
4327 | |
|
4328 | 0 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
4329 | 0 | | SEC_LINKER_CREATED); |
4330 | | |
4331 | | /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and |
4332 | | .rel[a].bss sections. */ |
4333 | | |
4334 | | /* FRV-specific: we want to create the GOT and the PLT in the FRV |
4335 | | way. */ |
4336 | 0 | if (! _frv_create_got_section (abfd, info)) |
4337 | 0 | return false; |
4338 | | |
4339 | | /* FRV-specific: make sure we created everything we wanted. */ |
4340 | 0 | BFD_ASSERT (frvfdpic_got_section (info) && frvfdpic_gotrel_section (info) |
4341 | 0 | && frvfdpic_gotfixup_section (info) |
4342 | 0 | && frvfdpic_plt_section (info) |
4343 | 0 | && frvfdpic_pltrel_section (info)); |
4344 | |
|
4345 | 0 | if (bed->want_dynbss) |
4346 | 0 | { |
4347 | | /* The .dynbss section is a place to put symbols which are defined |
4348 | | by dynamic objects, are referenced by regular objects, and are |
4349 | | not functions. We must allocate space for them in the process |
4350 | | image and use a R_*_COPY reloc to tell the dynamic linker to |
4351 | | initialize them at run time. The linker script puts the .dynbss |
4352 | | section into the .bss section of the final image. */ |
4353 | 0 | s = bfd_make_section_anyway_with_flags (abfd, ".dynbss", |
4354 | 0 | SEC_ALLOC | SEC_LINKER_CREATED); |
4355 | 0 | if (s == NULL) |
4356 | 0 | return false; |
4357 | | |
4358 | | /* The .rel[a].bss section holds copy relocs. This section is not |
4359 | | normally needed. We need to create it here, though, so that the |
4360 | | linker will map it to an output section. We can't just create it |
4361 | | only if we need it, because we will not know whether we need it |
4362 | | until we have seen all the input files, and the first time the |
4363 | | main linker code calls BFD after examining all the input files |
4364 | | (size_dynamic_sections) the input sections have already been |
4365 | | mapped to the output sections. If the section turns out not to |
4366 | | be needed, we can discard it later. We will never need this |
4367 | | section when generating a shared object, since they do not use |
4368 | | copy relocs. */ |
4369 | 0 | if (! bfd_link_pic (info)) |
4370 | 0 | { |
4371 | 0 | s = bfd_make_section_anyway_with_flags (abfd, |
4372 | 0 | (bed->default_use_rela_p |
4373 | 0 | ? ".rela.bss" : ".rel.bss"), |
4374 | 0 | flags | SEC_READONLY); |
4375 | 0 | if (s == NULL |
4376 | 0 | || !bfd_set_section_alignment (s, bed->s->log_file_align)) |
4377 | 0 | return false; |
4378 | 0 | } |
4379 | 0 | } |
4380 | | |
4381 | 0 | return true; |
4382 | 0 | } |
4383 | | |
4384 | | /* Compute the total GOT and PLT size required by each symbol in each |
4385 | | range. Symbols may require up to 4 words in the GOT: an entry |
4386 | | pointing to the symbol, an entry pointing to its function |
4387 | | descriptor, and a private function descriptors taking two |
4388 | | words. */ |
4389 | | |
4390 | | static void |
4391 | | _frvfdpic_count_nontls_entries (struct frvfdpic_relocs_info *entry, |
4392 | | struct _frvfdpic_dynamic_got_info *dinfo) |
4393 | 0 | { |
4394 | | /* Allocate space for a GOT entry pointing to the symbol. */ |
4395 | 0 | if (entry->got12) |
4396 | 0 | dinfo->got12 += 4; |
4397 | 0 | else if (entry->gotlos) |
4398 | 0 | dinfo->gotlos += 4; |
4399 | 0 | else if (entry->gothilo) |
4400 | 0 | dinfo->gothilo += 4; |
4401 | 0 | else |
4402 | 0 | entry->relocs32--; |
4403 | 0 | entry->relocs32++; |
4404 | | |
4405 | | /* Allocate space for a GOT entry pointing to the function |
4406 | | descriptor. */ |
4407 | 0 | if (entry->fdgot12) |
4408 | 0 | dinfo->got12 += 4; |
4409 | 0 | else if (entry->fdgotlos) |
4410 | 0 | dinfo->gotlos += 4; |
4411 | 0 | else if (entry->fdgothilo) |
4412 | 0 | dinfo->gothilo += 4; |
4413 | 0 | else |
4414 | 0 | entry->relocsfd--; |
4415 | 0 | entry->relocsfd++; |
4416 | | |
4417 | | /* Decide whether we need a PLT entry, a function descriptor in the |
4418 | | GOT, and a lazy PLT entry for this symbol. */ |
4419 | 0 | entry->plt = entry->call |
4420 | 0 | && entry->symndx == -1 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) |
4421 | 0 | && elf_hash_table (dinfo->info)->dynamic_sections_created; |
4422 | 0 | entry->privfd = entry->plt |
4423 | 0 | || entry->fdgoff12 || entry->fdgofflos || entry->fdgoffhilo |
4424 | 0 | || ((entry->fd || entry->fdgot12 || entry->fdgotlos || entry->fdgothilo) |
4425 | 0 | && (entry->symndx != -1 |
4426 | 0 | || FRVFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h))); |
4427 | 0 | entry->lazyplt = entry->privfd |
4428 | 0 | && entry->symndx == -1 && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) |
4429 | 0 | && ! (dinfo->info->flags & DF_BIND_NOW) |
4430 | 0 | && elf_hash_table (dinfo->info)->dynamic_sections_created; |
4431 | | |
4432 | | /* Allocate space for a function descriptor. */ |
4433 | 0 | if (entry->fdgoff12) |
4434 | 0 | dinfo->fd12 += 8; |
4435 | 0 | else if (entry->fdgofflos) |
4436 | 0 | dinfo->fdlos += 8; |
4437 | 0 | else if (entry->privfd && entry->plt) |
4438 | 0 | dinfo->fdplt += 8; |
4439 | 0 | else if (entry->privfd) |
4440 | 0 | dinfo->fdhilo += 8; |
4441 | 0 | else |
4442 | 0 | entry->relocsfdv--; |
4443 | 0 | entry->relocsfdv++; |
4444 | |
|
4445 | 0 | if (entry->lazyplt) |
4446 | 0 | dinfo->lzplt += 8; |
4447 | 0 | } |
4448 | | |
4449 | | /* Compute the total GOT size required by each TLS symbol in each |
4450 | | range. Symbols may require up to 5 words in the GOT: an entry |
4451 | | holding the TLS offset for the symbol, and an entry with a full TLS |
4452 | | descriptor taking 4 words. */ |
4453 | | |
4454 | | static void |
4455 | | _frvfdpic_count_tls_entries (struct frvfdpic_relocs_info *entry, |
4456 | | struct _frvfdpic_dynamic_got_info *dinfo, |
4457 | | bool subtract) |
4458 | 0 | { |
4459 | 0 | const int l = subtract ? -1 : 1; |
4460 | | |
4461 | | /* Allocate space for a GOT entry with the TLS offset of the |
4462 | | symbol. */ |
4463 | 0 | if (entry->tlsoff12) |
4464 | 0 | dinfo->got12 += 4 * l; |
4465 | 0 | else if (entry->tlsofflos) |
4466 | 0 | dinfo->gotlos += 4 * l; |
4467 | 0 | else if (entry->tlsoffhilo) |
4468 | 0 | dinfo->gothilo += 4 * l; |
4469 | 0 | else |
4470 | 0 | entry->relocstlsoff -= l; |
4471 | 0 | entry->relocstlsoff += l; |
4472 | | |
4473 | | /* If there's any TLSOFF relocation, mark the output file as not |
4474 | | suitable for dlopening. This mark will remain even if we relax |
4475 | | all such relocations, but this is not a problem, since we'll only |
4476 | | do so for executables, and we definitely don't want anyone |
4477 | | dlopening executables. */ |
4478 | 0 | if (entry->relocstlsoff) |
4479 | 0 | dinfo->info->flags |= DF_STATIC_TLS; |
4480 | | |
4481 | | /* Allocate space for a TLS descriptor. */ |
4482 | 0 | if (entry->tlsdesc12) |
4483 | 0 | dinfo->tlsd12 += 8 * l; |
4484 | 0 | else if (entry->tlsdesclos) |
4485 | 0 | dinfo->tlsdlos += 8 * l; |
4486 | 0 | else if (entry->tlsplt) |
4487 | 0 | dinfo->tlsdplt += 8 * l; |
4488 | 0 | else if (entry->tlsdeschilo) |
4489 | 0 | dinfo->tlsdhilo += 8 * l; |
4490 | 0 | else |
4491 | 0 | entry->relocstlsd -= l; |
4492 | 0 | entry->relocstlsd += l; |
4493 | 0 | } |
4494 | | |
4495 | | /* Compute the number of dynamic relocations and fixups that a symbol |
4496 | | requires, and add (or subtract) from the grand and per-symbol |
4497 | | totals. */ |
4498 | | |
4499 | | static void |
4500 | | _frvfdpic_count_relocs_fixups (struct frvfdpic_relocs_info *entry, |
4501 | | struct _frvfdpic_dynamic_got_info *dinfo, |
4502 | | bool subtract) |
4503 | 0 | { |
4504 | 0 | bfd_vma relocs = 0, fixups = 0, tlsrets = 0; |
4505 | |
|
4506 | 0 | if (!bfd_link_pde (dinfo->info)) |
4507 | 0 | { |
4508 | 0 | relocs = entry->relocs32 + entry->relocsfd + entry->relocsfdv |
4509 | 0 | + entry->relocstlsd; |
4510 | | |
4511 | | /* In the executable, TLS relocations to symbols that bind |
4512 | | locally (including those that resolve to global TLS offsets) |
4513 | | are resolved immediately, without any need for fixups or |
4514 | | dynamic relocations. In shared libraries, however, we must |
4515 | | emit dynamic relocations even for local symbols, because we |
4516 | | don't know the module id the library is going to get at |
4517 | | run-time, nor its TLS base offset. */ |
4518 | 0 | if (!bfd_link_executable (dinfo->info) |
4519 | 0 | || (entry->symndx == -1 |
4520 | 0 | && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h))) |
4521 | 0 | relocs += entry->relocstlsoff; |
4522 | 0 | } |
4523 | 0 | else |
4524 | 0 | { |
4525 | 0 | if (entry->symndx != -1 || FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h)) |
4526 | 0 | { |
4527 | 0 | if (entry->symndx != -1 |
4528 | 0 | || entry->d.h->root.type != bfd_link_hash_undefweak) |
4529 | 0 | fixups += entry->relocs32 + 2 * entry->relocsfdv; |
4530 | 0 | fixups += entry->relocstlsd; |
4531 | 0 | tlsrets += entry->relocstlsd; |
4532 | 0 | } |
4533 | 0 | else |
4534 | 0 | { |
4535 | 0 | relocs += entry->relocs32 + entry->relocsfdv |
4536 | 0 | + entry->relocstlsoff + entry->relocstlsd; |
4537 | 0 | } |
4538 | |
|
4539 | 0 | if (entry->symndx != -1 |
4540 | 0 | || FRVFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h)) |
4541 | 0 | { |
4542 | 0 | if (entry->symndx != -1 |
4543 | 0 | || entry->d.h->root.type != bfd_link_hash_undefweak) |
4544 | 0 | fixups += entry->relocsfd; |
4545 | 0 | } |
4546 | 0 | else |
4547 | 0 | relocs += entry->relocsfd; |
4548 | 0 | } |
4549 | |
|
4550 | 0 | if (subtract) |
4551 | 0 | { |
4552 | 0 | relocs = - relocs; |
4553 | 0 | fixups = - fixups; |
4554 | 0 | tlsrets = - tlsrets; |
4555 | 0 | } |
4556 | |
|
4557 | 0 | entry->dynrelocs += relocs; |
4558 | 0 | entry->fixups += fixups; |
4559 | 0 | dinfo->relocs += relocs; |
4560 | 0 | dinfo->fixups += fixups; |
4561 | 0 | dinfo->tls_ret_refs += tlsrets; |
4562 | 0 | } |
4563 | | |
4564 | | /* Look for opportunities to relax TLS relocations. We can assume |
4565 | | we're linking the main executable or a static-tls library, since |
4566 | | otherwise we wouldn't have got here. When relaxing, we have to |
4567 | | first undo any previous accounting of TLS uses of fixups, dynamic |
4568 | | relocations, GOT and PLT entries. */ |
4569 | | |
4570 | | static void |
4571 | | _frvfdpic_relax_tls_entries (struct frvfdpic_relocs_info *entry, |
4572 | | struct _frvfdpic_dynamic_got_info *dinfo, |
4573 | | bool relaxing) |
4574 | 0 | { |
4575 | 0 | bool changed = ! relaxing; |
4576 | |
|
4577 | 0 | BFD_ASSERT (bfd_link_executable (dinfo->info) |
4578 | 0 | || (dinfo->info->flags & DF_STATIC_TLS)); |
4579 | |
|
4580 | 0 | if (entry->tlsdesc12 || entry->tlsdesclos || entry->tlsdeschilo) |
4581 | 0 | { |
4582 | 0 | if (! changed) |
4583 | 0 | { |
4584 | 0 | _frvfdpic_count_relocs_fixups (entry, dinfo, true); |
4585 | 0 | _frvfdpic_count_tls_entries (entry, dinfo, true); |
4586 | 0 | changed = true; |
4587 | 0 | } |
4588 | | |
4589 | | /* When linking an executable, we can always decay GOTTLSDESC to |
4590 | | TLSMOFF, if the symbol is local, or GOTTLSOFF, otherwise. |
4591 | | When linking a static-tls shared library, using TLSMOFF is |
4592 | | not an option, but we can still use GOTTLSOFF. When decaying |
4593 | | to GOTTLSOFF, we must keep the GOT entry in range. We know |
4594 | | it has to fit because we'll be trading the 4 words of hte TLS |
4595 | | descriptor for a single word in the same range. */ |
4596 | 0 | if (! bfd_link_executable (dinfo->info) |
4597 | 0 | || (entry->symndx == -1 |
4598 | 0 | && ! FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h))) |
4599 | 0 | { |
4600 | 0 | entry->tlsoff12 |= entry->tlsdesc12; |
4601 | 0 | entry->tlsofflos |= entry->tlsdesclos; |
4602 | 0 | entry->tlsoffhilo |= entry->tlsdeschilo; |
4603 | 0 | } |
4604 | |
|
4605 | 0 | entry->tlsdesc12 = entry->tlsdesclos = entry->tlsdeschilo = 0; |
4606 | 0 | } |
4607 | | |
4608 | | /* We can only decay TLSOFFs or call #gettlsoff to TLSMOFF in the |
4609 | | main executable. We have to check whether the symbol's TLSOFF is |
4610 | | in range for a setlos. For symbols with a hash entry, we can |
4611 | | determine exactly what to do; for others locals, we don't have |
4612 | | addresses handy, so we use the size of the TLS section as an |
4613 | | approximation. If we get it wrong, we'll retain a GOT entry |
4614 | | holding the TLS offset (without dynamic relocations or fixups), |
4615 | | but we'll still optimize away the loads from it. Since TLS sizes |
4616 | | are generally very small, it's probably not worth attempting to |
4617 | | do better than this. */ |
4618 | 0 | if ((entry->tlsplt |
4619 | 0 | || entry->tlsoff12 || entry->tlsofflos || entry->tlsoffhilo) |
4620 | 0 | && bfd_link_executable (dinfo->info) && relaxing |
4621 | 0 | && ((entry->symndx == -1 |
4622 | 0 | && FRVFDPIC_SYM_LOCAL (dinfo->info, entry->d.h) |
4623 | | /* The above may hold for an undefweak TLS symbol, so make |
4624 | | sure we don't have this case before accessing def.value |
4625 | | and def.section. */ |
4626 | 0 | && (entry->d.h->root.type == bfd_link_hash_undefweak |
4627 | 0 | || (bfd_vma)(entry->d.h->root.u.def.value |
4628 | 0 | + (entry->d.h->root.u.def.section |
4629 | 0 | ->output_section->vma) |
4630 | 0 | + entry->d.h->root.u.def.section->output_offset |
4631 | 0 | + entry->addend |
4632 | 0 | - tls_biased_base (dinfo->info) |
4633 | 0 | + 32768) < (bfd_vma)65536)) |
4634 | 0 | || (entry->symndx != -1 |
4635 | 0 | && (elf_hash_table (dinfo->info)->tls_sec->size |
4636 | 0 | + entry->addend < 32768 + FRVFDPIC_TLS_BIAS)))) |
4637 | 0 | { |
4638 | 0 | if (! changed) |
4639 | 0 | { |
4640 | 0 | _frvfdpic_count_relocs_fixups (entry, dinfo, true); |
4641 | 0 | _frvfdpic_count_tls_entries (entry, dinfo, true); |
4642 | 0 | changed = true; |
4643 | 0 | } |
4644 | |
|
4645 | 0 | entry->tlsplt = |
4646 | 0 | entry->tlsoff12 = entry->tlsofflos = entry->tlsoffhilo = 0; |
4647 | 0 | } |
4648 | | |
4649 | | /* We can decay `call #gettlsoff' to a ldi #tlsoff if we already |
4650 | | have a #gottlsoff12 relocation for this entry, or if we can fit |
4651 | | one more in the 12-bit (and 16-bit) ranges. */ |
4652 | 0 | if (entry->tlsplt |
4653 | 0 | && (entry->tlsoff12 |
4654 | 0 | || (relaxing |
4655 | 0 | && dinfo->got12 + dinfo->fd12 + dinfo->tlsd12 <= 4096 - 12 - 4 |
4656 | 0 | && (dinfo->got12 + dinfo->fd12 + dinfo->tlsd12 |
4657 | 0 | + dinfo->gotlos + dinfo->fdlos + dinfo->tlsdlos |
4658 | 0 | <= 65536 - 12 - 4)))) |
4659 | 0 | { |
4660 | 0 | if (! changed) |
4661 | 0 | { |
4662 | 0 | _frvfdpic_count_relocs_fixups (entry, dinfo, true); |
4663 | 0 | _frvfdpic_count_tls_entries (entry, dinfo, true); |
4664 | 0 | changed = true; |
4665 | 0 | } |
4666 | |
|
4667 | 0 | entry->tlsoff12 = 1; |
4668 | 0 | entry->tlsplt = 0; |
4669 | 0 | } |
4670 | |
|
4671 | 0 | if (changed) |
4672 | 0 | { |
4673 | 0 | _frvfdpic_count_tls_entries (entry, dinfo, false); |
4674 | 0 | _frvfdpic_count_relocs_fixups (entry, dinfo, false); |
4675 | 0 | } |
4676 | |
|
4677 | 0 | return; |
4678 | 0 | } |
4679 | | |
4680 | | /* Compute the total GOT and PLT size required by each symbol in each range. * |
4681 | | Symbols may require up to 4 words in the GOT: an entry pointing to |
4682 | | the symbol, an entry pointing to its function descriptor, and a |
4683 | | private function descriptors taking two words. */ |
4684 | | |
4685 | | static int |
4686 | | _frvfdpic_count_got_plt_entries (void **entryp, void *dinfo_) |
4687 | 0 | { |
4688 | 0 | struct frvfdpic_relocs_info *entry = *entryp; |
4689 | 0 | struct _frvfdpic_dynamic_got_info *dinfo = dinfo_; |
4690 | |
|
4691 | 0 | _frvfdpic_count_nontls_entries (entry, dinfo); |
4692 | |
|
4693 | 0 | if (bfd_link_executable (dinfo->info) |
4694 | 0 | || (dinfo->info->flags & DF_STATIC_TLS)) |
4695 | 0 | _frvfdpic_relax_tls_entries (entry, dinfo, false); |
4696 | 0 | else |
4697 | 0 | { |
4698 | 0 | _frvfdpic_count_tls_entries (entry, dinfo, false); |
4699 | 0 | _frvfdpic_count_relocs_fixups (entry, dinfo, false); |
4700 | 0 | } |
4701 | |
|
4702 | 0 | return 1; |
4703 | 0 | } |
4704 | | |
4705 | | /* Determine the positive and negative ranges to be used by each |
4706 | | offset range in the GOT. FDCUR and CUR, that must be aligned to a |
4707 | | double-word boundary, are the minimum (negative) and maximum |
4708 | | (positive) GOT offsets already used by previous ranges, except for |
4709 | | an ODD entry that may have been left behind. GOT and FD indicate |
4710 | | the size of GOT entries and function descriptors that must be |
4711 | | placed within the range from -WRAP to WRAP. If there's room left, |
4712 | | up to FDPLT bytes should be reserved for additional function |
4713 | | descriptors. */ |
4714 | | |
4715 | | inline static bfd_signed_vma |
4716 | | _frvfdpic_compute_got_alloc_data (struct _frvfdpic_dynamic_got_alloc_data *gad, |
4717 | | bfd_signed_vma fdcur, |
4718 | | bfd_signed_vma odd, |
4719 | | bfd_signed_vma cur, |
4720 | | bfd_vma got, |
4721 | | bfd_vma fd, |
4722 | | bfd_vma fdplt, |
4723 | | bfd_vma tlsd, |
4724 | | bfd_vma tlsdplt, |
4725 | | bfd_vma wrap) |
4726 | 0 | { |
4727 | 0 | bfd_signed_vma wrapmin = -wrap; |
4728 | 0 | const bfd_vma tdescsz = 8; |
4729 | | |
4730 | | /* Start at the given initial points. */ |
4731 | 0 | gad->fdcur = fdcur; |
4732 | 0 | gad->cur = cur; |
4733 | | |
4734 | | /* If we had an incoming odd word and we have any got entries that |
4735 | | are going to use it, consume it, otherwise leave gad->odd at |
4736 | | zero. We might force gad->odd to zero and return the incoming |
4737 | | odd such that it is used by the next range, but then GOT entries |
4738 | | might appear to be out of order and we wouldn't be able to |
4739 | | shorten the GOT by one word if it turns out to end with an |
4740 | | unpaired GOT entry. */ |
4741 | 0 | if (odd && got) |
4742 | 0 | { |
4743 | 0 | gad->odd = odd; |
4744 | 0 | got -= 4; |
4745 | 0 | odd = 0; |
4746 | 0 | } |
4747 | 0 | else |
4748 | 0 | gad->odd = 0; |
4749 | | |
4750 | | /* If we're left with an unpaired GOT entry, compute its location |
4751 | | such that we can return it. Otherwise, if got doesn't require an |
4752 | | odd number of words here, either odd was already zero in the |
4753 | | block above, or it was set to zero because got was non-zero, or |
4754 | | got was already zero. In the latter case, we want the value of |
4755 | | odd to carry over to the return statement, so we don't want to |
4756 | | reset odd unless the condition below is true. */ |
4757 | 0 | if (got & 4) |
4758 | 0 | { |
4759 | 0 | odd = cur + got; |
4760 | 0 | got += 4; |
4761 | 0 | } |
4762 | | |
4763 | | /* Compute the tentative boundaries of this range. */ |
4764 | 0 | gad->max = cur + got; |
4765 | 0 | gad->min = fdcur - fd; |
4766 | 0 | gad->fdplt = 0; |
4767 | | |
4768 | | /* If function descriptors took too much space, wrap some of them |
4769 | | around. */ |
4770 | 0 | if (gad->min < wrapmin) |
4771 | 0 | { |
4772 | 0 | gad->max += wrapmin - gad->min; |
4773 | 0 | gad->tmin = gad->min = wrapmin; |
4774 | 0 | } |
4775 | | |
4776 | | /* If GOT entries took too much space, wrap some of them around. |
4777 | | This may well cause gad->min to become lower than wrapmin. This |
4778 | | will cause a relocation overflow later on, so we don't have to |
4779 | | report it here . */ |
4780 | 0 | if ((bfd_vma) gad->max > wrap) |
4781 | 0 | { |
4782 | 0 | gad->min -= gad->max - wrap; |
4783 | 0 | gad->max = wrap; |
4784 | 0 | } |
4785 | | |
4786 | | /* Add TLS descriptors. */ |
4787 | 0 | gad->tmax = gad->max + tlsd; |
4788 | 0 | gad->tmin = gad->min; |
4789 | 0 | gad->tlsdplt = 0; |
4790 | | |
4791 | | /* If TLS descriptors took too much space, wrap an integral number |
4792 | | of them around. */ |
4793 | 0 | if ((bfd_vma) gad->tmax > wrap) |
4794 | 0 | { |
4795 | 0 | bfd_vma wrapsize = gad->tmax - wrap; |
4796 | |
|
4797 | 0 | wrapsize += tdescsz / 2; |
4798 | 0 | wrapsize &= ~ tdescsz / 2; |
4799 | |
|
4800 | 0 | gad->tmin -= wrapsize; |
4801 | 0 | gad->tmax -= wrapsize; |
4802 | 0 | } |
4803 | | |
4804 | | /* If there is space left and we have function descriptors |
4805 | | referenced in PLT entries that could take advantage of shorter |
4806 | | offsets, place them now. */ |
4807 | 0 | if (fdplt && gad->tmin > wrapmin) |
4808 | 0 | { |
4809 | 0 | bfd_vma fds; |
4810 | |
|
4811 | 0 | if ((bfd_vma) (gad->tmin - wrapmin) < fdplt) |
4812 | 0 | fds = gad->tmin - wrapmin; |
4813 | 0 | else |
4814 | 0 | fds = fdplt; |
4815 | |
|
4816 | 0 | fdplt -= fds; |
4817 | 0 | gad->min -= fds; |
4818 | 0 | gad->tmin -= fds; |
4819 | 0 | gad->fdplt += fds; |
4820 | 0 | } |
4821 | | |
4822 | | /* If there is more space left, try to place some more function |
4823 | | descriptors for PLT entries. */ |
4824 | 0 | if (fdplt && (bfd_vma) gad->tmax < wrap) |
4825 | 0 | { |
4826 | 0 | bfd_vma fds; |
4827 | |
|
4828 | 0 | if ((bfd_vma) (wrap - gad->tmax) < fdplt) |
4829 | 0 | fds = wrap - gad->tmax; |
4830 | 0 | else |
4831 | 0 | fds = fdplt; |
4832 | |
|
4833 | 0 | fdplt -= fds; |
4834 | 0 | gad->max += fds; |
4835 | 0 | gad->tmax += fds; |
4836 | 0 | gad->fdplt += fds; |
4837 | 0 | } |
4838 | | |
4839 | | /* If there is space left and we have TLS descriptors referenced in |
4840 | | PLT entries that could take advantage of shorter offsets, place |
4841 | | them now. */ |
4842 | 0 | if (tlsdplt && gad->tmin > wrapmin) |
4843 | 0 | { |
4844 | 0 | bfd_vma tlsds; |
4845 | |
|
4846 | 0 | if ((bfd_vma) (gad->tmin - wrapmin) < tlsdplt) |
4847 | 0 | tlsds = (gad->tmin - wrapmin) & ~ (tdescsz / 2); |
4848 | 0 | else |
4849 | 0 | tlsds = tlsdplt; |
4850 | |
|
4851 | 0 | tlsdplt -= tlsds; |
4852 | 0 | gad->tmin -= tlsds; |
4853 | 0 | gad->tlsdplt += tlsds; |
4854 | 0 | } |
4855 | | |
4856 | | /* If there is more space left, try to place some more TLS |
4857 | | descriptors for PLT entries. Although we could try to fit an |
4858 | | additional TLS descriptor with half of it just before before the |
4859 | | wrap point and another right past the wrap point, this might |
4860 | | cause us to run out of space for the next region, so don't do |
4861 | | it. */ |
4862 | 0 | if (tlsdplt && (bfd_vma) gad->tmax < wrap - tdescsz / 2) |
4863 | 0 | { |
4864 | 0 | bfd_vma tlsds; |
4865 | |
|
4866 | 0 | if ((bfd_vma) (wrap - gad->tmax) < tlsdplt) |
4867 | 0 | tlsds = (wrap - gad->tmax) & ~ (tdescsz / 2); |
4868 | 0 | else |
4869 | 0 | tlsds = tlsdplt; |
4870 | |
|
4871 | 0 | tlsdplt -= tlsds; |
4872 | 0 | gad->tmax += tlsds; |
4873 | 0 | gad->tlsdplt += tlsds; |
4874 | 0 | } |
4875 | | |
4876 | | /* If odd was initially computed as an offset past the wrap point, |
4877 | | wrap it around. */ |
4878 | 0 | if (odd > gad->max) |
4879 | 0 | odd = gad->min + odd - gad->max; |
4880 | | |
4881 | | /* _frvfdpic_get_got_entry() below will always wrap gad->cur if needed |
4882 | | before returning, so do it here too. This guarantees that, |
4883 | | should cur and fdcur meet at the wrap point, they'll both be |
4884 | | equal to min. */ |
4885 | 0 | if (gad->cur == gad->max) |
4886 | 0 | gad->cur = gad->min; |
4887 | | |
4888 | | /* Ditto for _frvfdpic_get_tlsdesc_entry(). */ |
4889 | 0 | gad->tcur = gad->max; |
4890 | 0 | if (gad->tcur == gad->tmax) |
4891 | 0 | gad->tcur = gad->tmin; |
4892 | |
|
4893 | 0 | return odd; |
4894 | 0 | } |
4895 | | |
4896 | | /* Compute the location of the next GOT entry, given the allocation |
4897 | | data for a range. */ |
4898 | | |
4899 | | inline static bfd_signed_vma |
4900 | | _frvfdpic_get_got_entry (struct _frvfdpic_dynamic_got_alloc_data *gad) |
4901 | 0 | { |
4902 | 0 | bfd_signed_vma ret; |
4903 | |
|
4904 | 0 | if (gad->odd) |
4905 | 0 | { |
4906 | | /* If there was an odd word left behind, use it. */ |
4907 | 0 | ret = gad->odd; |
4908 | 0 | gad->odd = 0; |
4909 | 0 | } |
4910 | 0 | else |
4911 | 0 | { |
4912 | | /* Otherwise, use the word pointed to by cur, reserve the next |
4913 | | as an odd word, and skip to the next pair of words, possibly |
4914 | | wrapping around. */ |
4915 | 0 | ret = gad->cur; |
4916 | 0 | gad->odd = gad->cur + 4; |
4917 | 0 | gad->cur += 8; |
4918 | 0 | if (gad->cur == gad->max) |
4919 | 0 | gad->cur = gad->min; |
4920 | 0 | } |
4921 | |
|
4922 | 0 | return ret; |
4923 | 0 | } |
4924 | | |
4925 | | /* Compute the location of the next function descriptor entry in the |
4926 | | GOT, given the allocation data for a range. */ |
4927 | | |
4928 | | inline static bfd_signed_vma |
4929 | | _frvfdpic_get_fd_entry (struct _frvfdpic_dynamic_got_alloc_data *gad) |
4930 | 0 | { |
4931 | | /* If we're at the bottom, wrap around, and only then allocate the |
4932 | | next pair of words. */ |
4933 | 0 | if (gad->fdcur == gad->min) |
4934 | 0 | gad->fdcur = gad->max; |
4935 | 0 | return gad->fdcur -= 8; |
4936 | 0 | } |
4937 | | |
4938 | | /* Compute the location of the next TLS descriptor entry in the GOT, |
4939 | | given the allocation data for a range. */ |
4940 | | inline static bfd_signed_vma |
4941 | | _frvfdpic_get_tlsdesc_entry (struct _frvfdpic_dynamic_got_alloc_data *gad) |
4942 | 0 | { |
4943 | 0 | bfd_signed_vma ret; |
4944 | |
|
4945 | 0 | ret = gad->tcur; |
4946 | |
|
4947 | 0 | gad->tcur += 8; |
4948 | | |
4949 | | /* If we're at the top of the region, wrap around to the bottom. */ |
4950 | 0 | if (gad->tcur == gad->tmax) |
4951 | 0 | gad->tcur = gad->tmin; |
4952 | |
|
4953 | 0 | return ret; |
4954 | 0 | } |
4955 | | |
4956 | | /* Assign GOT offsets for every GOT entry and function descriptor. |
4957 | | Doing everything in a single pass is tricky. */ |
4958 | | |
4959 | | static int |
4960 | | _frvfdpic_assign_got_entries (void **entryp, void *info_) |
4961 | 0 | { |
4962 | 0 | struct frvfdpic_relocs_info *entry = *entryp; |
4963 | 0 | struct _frvfdpic_dynamic_got_plt_info *dinfo = info_; |
4964 | |
|
4965 | 0 | if (entry->got12) |
4966 | 0 | entry->got_entry = _frvfdpic_get_got_entry (&dinfo->got12); |
4967 | 0 | else if (entry->gotlos) |
4968 | 0 | entry->got_entry = _frvfdpic_get_got_entry (&dinfo->gotlos); |
4969 | 0 | else if (entry->gothilo) |
4970 | 0 | entry->got_entry = _frvfdpic_get_got_entry (&dinfo->gothilo); |
4971 | |
|
4972 | 0 | if (entry->fdgot12) |
4973 | 0 | entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->got12); |
4974 | 0 | else if (entry->fdgotlos) |
4975 | 0 | entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->gotlos); |
4976 | 0 | else if (entry->fdgothilo) |
4977 | 0 | entry->fdgot_entry = _frvfdpic_get_got_entry (&dinfo->gothilo); |
4978 | |
|
4979 | 0 | if (entry->fdgoff12) |
4980 | 0 | entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->got12); |
4981 | 0 | else if (entry->plt && dinfo->got12.fdplt) |
4982 | 0 | { |
4983 | 0 | dinfo->got12.fdplt -= 8; |
4984 | 0 | entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->got12); |
4985 | 0 | } |
4986 | 0 | else if (entry->fdgofflos) |
4987 | 0 | entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gotlos); |
4988 | 0 | else if (entry->plt && dinfo->gotlos.fdplt) |
4989 | 0 | { |
4990 | 0 | dinfo->gotlos.fdplt -= 8; |
4991 | 0 | entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gotlos); |
4992 | 0 | } |
4993 | 0 | else if (entry->plt) |
4994 | 0 | { |
4995 | 0 | dinfo->gothilo.fdplt -= 8; |
4996 | 0 | entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gothilo); |
4997 | 0 | } |
4998 | 0 | else if (entry->privfd) |
4999 | 0 | entry->fd_entry = _frvfdpic_get_fd_entry (&dinfo->gothilo); |
5000 | |
|
5001 | 0 | if (entry->tlsoff12) |
5002 | 0 | entry->tlsoff_entry = _frvfdpic_get_got_entry (&dinfo->got12); |
5003 | 0 | else if (entry->tlsofflos) |
5004 | 0 | entry->tlsoff_entry = _frvfdpic_get_got_entry (&dinfo->gotlos); |
5005 | 0 | else if (entry->tlsoffhilo) |
5006 | 0 | entry->tlsoff_entry = _frvfdpic_get_got_entry (&dinfo->gothilo); |
5007 | |
|
5008 | 0 | if (entry->tlsdesc12) |
5009 | 0 | entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->got12); |
5010 | 0 | else if (entry->tlsplt && dinfo->got12.tlsdplt) |
5011 | 0 | { |
5012 | 0 | dinfo->got12.tlsdplt -= 8; |
5013 | 0 | entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->got12); |
5014 | 0 | } |
5015 | 0 | else if (entry->tlsdesclos) |
5016 | 0 | entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gotlos); |
5017 | 0 | else if (entry->tlsplt && dinfo->gotlos.tlsdplt) |
5018 | 0 | { |
5019 | 0 | dinfo->gotlos.tlsdplt -= 8; |
5020 | 0 | entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gotlos); |
5021 | 0 | } |
5022 | 0 | else if (entry->tlsplt) |
5023 | 0 | { |
5024 | 0 | dinfo->gothilo.tlsdplt -= 8; |
5025 | 0 | entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gothilo); |
5026 | 0 | } |
5027 | 0 | else if (entry->tlsdeschilo) |
5028 | 0 | entry->tlsdesc_entry = _frvfdpic_get_tlsdesc_entry (&dinfo->gothilo); |
5029 | |
|
5030 | 0 | return 1; |
5031 | 0 | } |
5032 | | |
5033 | | /* Assign GOT offsets to private function descriptors used by PLT |
5034 | | entries (or referenced by 32-bit offsets), as well as PLT entries |
5035 | | and lazy PLT entries. */ |
5036 | | |
5037 | | static int |
5038 | | _frvfdpic_assign_plt_entries (void **entryp, void *info_) |
5039 | 0 | { |
5040 | 0 | struct frvfdpic_relocs_info *entry = *entryp; |
5041 | 0 | struct _frvfdpic_dynamic_got_plt_info *dinfo = info_; |
5042 | |
|
5043 | 0 | if (entry->privfd) |
5044 | 0 | BFD_ASSERT (entry->fd_entry); |
5045 | |
|
5046 | 0 | if (entry->plt) |
5047 | 0 | { |
5048 | 0 | int size; |
5049 | | |
5050 | | /* We use the section's raw size to mark the location of the |
5051 | | next PLT entry. */ |
5052 | 0 | entry->plt_entry = frvfdpic_plt_section (dinfo->g.info)->size; |
5053 | | |
5054 | | /* Figure out the length of this PLT entry based on the |
5055 | | addressing mode we need to reach the function descriptor. */ |
5056 | 0 | BFD_ASSERT (entry->fd_entry); |
5057 | 0 | if (entry->fd_entry >= -(1 << (12 - 1)) |
5058 | 0 | && entry->fd_entry < (1 << (12 - 1))) |
5059 | 0 | size = 8; |
5060 | 0 | else if (entry->fd_entry >= -(1 << (16 - 1)) |
5061 | 0 | && entry->fd_entry < (1 << (16 - 1))) |
5062 | 0 | size = 12; |
5063 | 0 | else |
5064 | 0 | size = 16; |
5065 | |
|
5066 | 0 | frvfdpic_plt_section (dinfo->g.info)->size += size; |
5067 | 0 | } |
5068 | |
|
5069 | 0 | if (entry->lazyplt) |
5070 | 0 | { |
5071 | 0 | entry->lzplt_entry = dinfo->g.lzplt; |
5072 | 0 | dinfo->g.lzplt += 8; |
5073 | | /* If this entry is the one that gets the resolver stub, account |
5074 | | for the additional instruction. */ |
5075 | 0 | if (entry->lzplt_entry % FRVFDPIC_LZPLT_BLOCK_SIZE |
5076 | 0 | == FRVFDPIC_LZPLT_RESOLV_LOC) |
5077 | 0 | dinfo->g.lzplt += 4; |
5078 | 0 | } |
5079 | |
|
5080 | 0 | if (entry->tlsplt) |
5081 | 0 | { |
5082 | 0 | int size; |
5083 | |
|
5084 | 0 | entry->tlsplt_entry |
5085 | 0 | = frvfdpic_plt_section (dinfo->g.info)->size; |
5086 | |
|
5087 | 0 | if (bfd_link_executable (dinfo->g.info) |
5088 | 0 | && (entry->symndx != -1 |
5089 | 0 | || FRVFDPIC_SYM_LOCAL (dinfo->g.info, entry->d.h))) |
5090 | 0 | { |
5091 | 0 | if ((bfd_signed_vma)entry->addend >= -(1 << (16 - 1)) |
5092 | | /* FIXME: here we use the size of the TLS section |
5093 | | as an upper bound for the value of the TLS |
5094 | | symbol, because we may not know the exact value |
5095 | | yet. If we get it wrong, we'll just waste a |
5096 | | word in the PLT, and we should never get even |
5097 | | close to 32 KiB of TLS anyway. */ |
5098 | 0 | && elf_hash_table (dinfo->g.info)->tls_sec |
5099 | 0 | && (elf_hash_table (dinfo->g.info)->tls_sec->size |
5100 | 0 | + (bfd_signed_vma)(entry->addend) <= (1 << (16 - 1)))) |
5101 | 0 | size = 8; |
5102 | 0 | else |
5103 | 0 | size = 12; |
5104 | 0 | } |
5105 | 0 | else if (entry->tlsoff_entry) |
5106 | 0 | { |
5107 | 0 | if (entry->tlsoff_entry >= -(1 << (12 - 1)) |
5108 | 0 | && entry->tlsoff_entry < (1 << (12 - 1))) |
5109 | 0 | size = 8; |
5110 | 0 | else if (entry->tlsoff_entry >= -(1 << (16 - 1)) |
5111 | 0 | && entry->tlsoff_entry < (1 << (16 - 1))) |
5112 | 0 | size = 12; |
5113 | 0 | else |
5114 | 0 | size = 16; |
5115 | 0 | } |
5116 | 0 | else |
5117 | 0 | { |
5118 | 0 | BFD_ASSERT (entry->tlsdesc_entry); |
5119 | |
|
5120 | 0 | if (entry->tlsdesc_entry >= -(1 << (12 - 1)) |
5121 | 0 | && entry->tlsdesc_entry < (1 << (12 - 1))) |
5122 | 0 | size = 8; |
5123 | 0 | else if (entry->tlsdesc_entry >= -(1 << (16 - 1)) |
5124 | 0 | && entry->tlsdesc_entry < (1 << (16 - 1))) |
5125 | 0 | size = 12; |
5126 | 0 | else |
5127 | 0 | size = 16; |
5128 | 0 | } |
5129 | |
|
5130 | 0 | frvfdpic_plt_section (dinfo->g.info)->size += size; |
5131 | 0 | } |
5132 | |
|
5133 | 0 | return 1; |
5134 | 0 | } |
5135 | | |
5136 | | /* Cancel out any effects of calling _frvfdpic_assign_got_entries and |
5137 | | _frvfdpic_assign_plt_entries. */ |
5138 | | |
5139 | | static int |
5140 | | _frvfdpic_reset_got_plt_entries (void **entryp, void *ignore ATTRIBUTE_UNUSED) |
5141 | 0 | { |
5142 | 0 | struct frvfdpic_relocs_info *entry = *entryp; |
5143 | |
|
5144 | 0 | entry->got_entry = 0; |
5145 | 0 | entry->fdgot_entry = 0; |
5146 | 0 | entry->fd_entry = 0; |
5147 | 0 | entry->plt_entry = (bfd_vma)-1; |
5148 | 0 | entry->lzplt_entry = (bfd_vma)-1; |
5149 | 0 | entry->tlsoff_entry = 0; |
5150 | 0 | entry->tlsdesc_entry = 0; |
5151 | 0 | entry->tlsplt_entry = (bfd_vma)-1; |
5152 | |
|
5153 | 0 | return 1; |
5154 | 0 | } |
5155 | | |
5156 | | /* Follow indirect and warning hash entries so that each got entry |
5157 | | points to the final symbol definition. P must point to a pointer |
5158 | | to the hash table we're traversing. Since this traversal may |
5159 | | modify the hash table, we set this pointer to NULL to indicate |
5160 | | we've made a potentially-destructive change to the hash table, so |
5161 | | the traversal must be restarted. */ |
5162 | | static int |
5163 | | _frvfdpic_resolve_final_relocs_info (void **entryp, void *p) |
5164 | 0 | { |
5165 | 0 | struct frvfdpic_relocs_info *entry = *entryp; |
5166 | 0 | htab_t *htab = p; |
5167 | |
|
5168 | 0 | if (entry->symndx == -1) |
5169 | 0 | { |
5170 | 0 | struct elf_link_hash_entry *h = entry->d.h; |
5171 | 0 | struct frvfdpic_relocs_info *oentry; |
5172 | |
|
5173 | 0 | while (h->root.type == bfd_link_hash_indirect |
5174 | 0 | || h->root.type == bfd_link_hash_warning) |
5175 | 0 | h = (struct elf_link_hash_entry *)h->root.u.i.link; |
5176 | |
|
5177 | 0 | if (entry->d.h == h) |
5178 | 0 | return 1; |
5179 | | |
5180 | 0 | oentry = frvfdpic_relocs_info_for_global (*htab, 0, h, entry->addend, |
5181 | 0 | NO_INSERT); |
5182 | |
|
5183 | 0 | if (oentry) |
5184 | 0 | { |
5185 | | /* Merge the two entries. */ |
5186 | 0 | frvfdpic_pic_merge_early_relocs_info (oentry, entry); |
5187 | 0 | htab_clear_slot (*htab, entryp); |
5188 | 0 | return 1; |
5189 | 0 | } |
5190 | | |
5191 | 0 | entry->d.h = h; |
5192 | | |
5193 | | /* If we can't find this entry with the new bfd hash, re-insert |
5194 | | it, and get the traversal restarted. */ |
5195 | 0 | if (! htab_find (*htab, entry)) |
5196 | 0 | { |
5197 | 0 | htab_clear_slot (*htab, entryp); |
5198 | 0 | entryp = htab_find_slot (*htab, entry, INSERT); |
5199 | 0 | if (! *entryp) |
5200 | 0 | *entryp = entry; |
5201 | | /* Abort the traversal, since the whole table may have |
5202 | | moved, and leave it up to the parent to restart the |
5203 | | process. */ |
5204 | 0 | *(htab_t *)p = NULL; |
5205 | 0 | return 0; |
5206 | 0 | } |
5207 | 0 | } |
5208 | | |
5209 | 0 | return 1; |
5210 | 0 | } |
5211 | | |
5212 | | /* Compute the total size of the GOT, the PLT, the dynamic relocations |
5213 | | section and the rofixup section. Assign locations for GOT and PLT |
5214 | | entries. */ |
5215 | | |
5216 | | static bool |
5217 | | _frvfdpic_size_got_plt (bfd *output_bfd, |
5218 | | struct _frvfdpic_dynamic_got_plt_info *gpinfop) |
5219 | 0 | { |
5220 | 0 | bfd_signed_vma odd; |
5221 | 0 | bfd_vma limit, tlslimit; |
5222 | 0 | struct bfd_link_info *info = gpinfop->g.info; |
5223 | 0 | bfd *dynobj = elf_hash_table (info)->dynobj; |
5224 | |
|
5225 | 0 | memcpy (frvfdpic_dynamic_got_plt_info (info), &gpinfop->g, |
5226 | 0 | sizeof (gpinfop->g)); |
5227 | |
|
5228 | 0 | odd = 12; |
5229 | | /* Compute the total size taken by entries in the 12-bit and 16-bit |
5230 | | ranges, to tell how many PLT function descriptors we can bring |
5231 | | into the 12-bit range without causing the 16-bit range to |
5232 | | overflow. */ |
5233 | 0 | limit = odd + gpinfop->g.got12 + gpinfop->g.gotlos |
5234 | 0 | + gpinfop->g.fd12 + gpinfop->g.fdlos |
5235 | 0 | + gpinfop->g.tlsd12 + gpinfop->g.tlsdlos; |
5236 | 0 | if (limit < (bfd_vma)1 << 16) |
5237 | 0 | limit = ((bfd_vma)1 << 16) - limit; |
5238 | 0 | else |
5239 | 0 | limit = 0; |
5240 | 0 | if (gpinfop->g.fdplt < limit) |
5241 | 0 | { |
5242 | 0 | tlslimit = (limit - gpinfop->g.fdplt) & ~ (bfd_vma) 8; |
5243 | 0 | limit = gpinfop->g.fdplt; |
5244 | 0 | } |
5245 | 0 | else |
5246 | 0 | tlslimit = 0; |
5247 | 0 | if (gpinfop->g.tlsdplt < tlslimit) |
5248 | 0 | tlslimit = gpinfop->g.tlsdplt; |
5249 | | |
5250 | | /* Determine the ranges of GOT offsets that we can use for each |
5251 | | range of addressing modes. */ |
5252 | 0 | odd = _frvfdpic_compute_got_alloc_data (&gpinfop->got12, |
5253 | 0 | 0, |
5254 | 0 | odd, |
5255 | 0 | 16, |
5256 | 0 | gpinfop->g.got12, |
5257 | 0 | gpinfop->g.fd12, |
5258 | 0 | limit, |
5259 | 0 | gpinfop->g.tlsd12, |
5260 | 0 | tlslimit, |
5261 | 0 | (bfd_vma)1 << (12-1)); |
5262 | 0 | odd = _frvfdpic_compute_got_alloc_data (&gpinfop->gotlos, |
5263 | 0 | gpinfop->got12.tmin, |
5264 | 0 | odd, |
5265 | 0 | gpinfop->got12.tmax, |
5266 | 0 | gpinfop->g.gotlos, |
5267 | 0 | gpinfop->g.fdlos, |
5268 | 0 | gpinfop->g.fdplt |
5269 | 0 | - gpinfop->got12.fdplt, |
5270 | 0 | gpinfop->g.tlsdlos, |
5271 | 0 | gpinfop->g.tlsdplt |
5272 | 0 | - gpinfop->got12.tlsdplt, |
5273 | 0 | (bfd_vma)1 << (16-1)); |
5274 | 0 | odd = _frvfdpic_compute_got_alloc_data (&gpinfop->gothilo, |
5275 | 0 | gpinfop->gotlos.tmin, |
5276 | 0 | odd, |
5277 | 0 | gpinfop->gotlos.tmax, |
5278 | 0 | gpinfop->g.gothilo, |
5279 | 0 | gpinfop->g.fdhilo, |
5280 | 0 | gpinfop->g.fdplt |
5281 | 0 | - gpinfop->got12.fdplt |
5282 | 0 | - gpinfop->gotlos.fdplt, |
5283 | 0 | gpinfop->g.tlsdhilo, |
5284 | 0 | gpinfop->g.tlsdplt |
5285 | 0 | - gpinfop->got12.tlsdplt |
5286 | 0 | - gpinfop->gotlos.tlsdplt, |
5287 | 0 | (bfd_vma)1 << (32-1)); |
5288 | | |
5289 | | /* Now assign (most) GOT offsets. */ |
5290 | 0 | htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_assign_got_entries, |
5291 | 0 | gpinfop); |
5292 | |
|
5293 | 0 | frvfdpic_got_section (info)->size = gpinfop->gothilo.tmax |
5294 | 0 | - gpinfop->gothilo.tmin |
5295 | | /* If an odd word is the last word of the GOT, we don't need this |
5296 | | word to be part of the GOT. */ |
5297 | 0 | - (odd + 4 == gpinfop->gothilo.tmax ? 4 : 0); |
5298 | 0 | if (frvfdpic_got_section (info)->size == 0) |
5299 | 0 | frvfdpic_got_section (info)->flags |= SEC_EXCLUDE; |
5300 | 0 | else if (frvfdpic_got_section (info)->size == 12 |
5301 | 0 | && ! elf_hash_table (info)->dynamic_sections_created) |
5302 | 0 | { |
5303 | 0 | frvfdpic_got_section (info)->flags |= SEC_EXCLUDE; |
5304 | 0 | frvfdpic_got_section (info)->size = 0; |
5305 | 0 | } |
5306 | | /* This will be non-NULL during relaxation. The assumption is that |
5307 | | the size of one of these sections will never grow, only shrink, |
5308 | | so we can use the larger buffer we allocated before. */ |
5309 | 0 | else if (frvfdpic_got_section (info)->contents == NULL) |
5310 | 0 | { |
5311 | 0 | frvfdpic_got_section (info)->contents = |
5312 | 0 | (bfd_byte *) bfd_zalloc (dynobj, |
5313 | 0 | frvfdpic_got_section (info)->size); |
5314 | 0 | if (frvfdpic_got_section (info)->contents == NULL) |
5315 | 0 | return false; |
5316 | 0 | frvfdpic_got_section (info)->alloced = 1; |
5317 | 0 | } |
5318 | | |
5319 | 0 | if (frvfdpic_gotrel_section (info)) |
5320 | | /* Subtract the number of lzplt entries, since those will generate |
5321 | | relocations in the pltrel section. */ |
5322 | 0 | frvfdpic_gotrel_section (info)->size = |
5323 | 0 | (gpinfop->g.relocs - gpinfop->g.lzplt / 8) |
5324 | 0 | * get_elf_backend_data (output_bfd)->s->sizeof_rel; |
5325 | 0 | else |
5326 | 0 | BFD_ASSERT (gpinfop->g.relocs == 0); |
5327 | 0 | if (frvfdpic_gotrel_section (info)->size == 0) |
5328 | 0 | frvfdpic_gotrel_section (info)->flags |= SEC_EXCLUDE; |
5329 | 0 | else if (frvfdpic_gotrel_section (info)->contents == NULL) |
5330 | 0 | { |
5331 | 0 | frvfdpic_gotrel_section (info)->contents = |
5332 | 0 | (bfd_byte *) bfd_zalloc (dynobj, |
5333 | 0 | frvfdpic_gotrel_section (info)->size); |
5334 | 0 | if (frvfdpic_gotrel_section (info)->contents == NULL) |
5335 | 0 | return false; |
5336 | 0 | frvfdpic_gotrel_section (info)->alloced = 1; |
5337 | 0 | } |
5338 | | |
5339 | 0 | frvfdpic_gotfixup_section (info)->size = (gpinfop->g.fixups + 1) * 4; |
5340 | 0 | if (frvfdpic_gotfixup_section (info)->size == 0) |
5341 | 0 | frvfdpic_gotfixup_section (info)->flags |= SEC_EXCLUDE; |
5342 | 0 | else if (frvfdpic_gotfixup_section (info)->contents == NULL) |
5343 | 0 | { |
5344 | 0 | frvfdpic_gotfixup_section (info)->contents = |
5345 | 0 | (bfd_byte *) bfd_zalloc (dynobj, |
5346 | 0 | frvfdpic_gotfixup_section (info)->size); |
5347 | 0 | if (frvfdpic_gotfixup_section (info)->contents == NULL) |
5348 | 0 | return false; |
5349 | 0 | frvfdpic_gotfixup_section (info)->alloced = 1; |
5350 | 0 | } |
5351 | | |
5352 | 0 | if (frvfdpic_pltrel_section (info)) |
5353 | 0 | { |
5354 | 0 | frvfdpic_pltrel_section (info)->size = |
5355 | 0 | gpinfop->g.lzplt / 8 |
5356 | 0 | * get_elf_backend_data (output_bfd)->s->sizeof_rel; |
5357 | 0 | if (frvfdpic_pltrel_section (info)->size == 0) |
5358 | 0 | frvfdpic_pltrel_section (info)->flags |= SEC_EXCLUDE; |
5359 | 0 | else if (frvfdpic_pltrel_section (info)->contents == NULL) |
5360 | 0 | { |
5361 | 0 | frvfdpic_pltrel_section (info)->contents = |
5362 | 0 | (bfd_byte *) bfd_zalloc (dynobj, |
5363 | 0 | frvfdpic_pltrel_section (info)->size); |
5364 | 0 | if (frvfdpic_pltrel_section (info)->contents == NULL) |
5365 | 0 | return false; |
5366 | 0 | frvfdpic_pltrel_section (info)->alloced = 1; |
5367 | 0 | } |
5368 | 0 | } |
5369 | | |
5370 | | /* Add 4 bytes for every block of at most 65535 lazy PLT entries, |
5371 | | such that there's room for the additional instruction needed to |
5372 | | call the resolver. Since _frvfdpic_assign_got_entries didn't |
5373 | | account for them, our block size is 4 bytes smaller than the real |
5374 | | block size. */ |
5375 | 0 | if (frvfdpic_plt_section (info)) |
5376 | 0 | { |
5377 | 0 | frvfdpic_plt_section (info)->size = gpinfop->g.lzplt |
5378 | 0 | + ((gpinfop->g.lzplt + (FRVFDPIC_LZPLT_BLOCK_SIZE - 4) - 8) |
5379 | 0 | / (FRVFDPIC_LZPLT_BLOCK_SIZE - 4) * 4); |
5380 | 0 | } |
5381 | | |
5382 | | /* Reset it, such that _frvfdpic_assign_plt_entries() can use it to |
5383 | | actually assign lazy PLT entries addresses. */ |
5384 | 0 | gpinfop->g.lzplt = 0; |
5385 | | |
5386 | | /* Save information that we're going to need to generate GOT and PLT |
5387 | | entries. */ |
5388 | 0 | frvfdpic_got_initial_offset (info) = -gpinfop->gothilo.tmin; |
5389 | |
|
5390 | 0 | if (get_elf_backend_data (output_bfd)->want_got_sym) |
5391 | 0 | elf_hash_table (info)->hgot->root.u.def.value |
5392 | 0 | = frvfdpic_got_initial_offset (info); |
5393 | |
|
5394 | 0 | if (frvfdpic_plt_section (info)) |
5395 | 0 | frvfdpic_plt_initial_offset (info) = |
5396 | 0 | frvfdpic_plt_section (info)->size; |
5397 | | |
5398 | | /* Allocate a ret statement at plt_initial_offset, to be used by |
5399 | | locally-resolved TLS descriptors. */ |
5400 | 0 | if (gpinfop->g.tls_ret_refs) |
5401 | 0 | frvfdpic_plt_section (info)->size += 4; |
5402 | |
|
5403 | 0 | htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_assign_plt_entries, |
5404 | 0 | gpinfop); |
5405 | | |
5406 | | /* Allocate the PLT section contents only after |
5407 | | _frvfdpic_assign_plt_entries has a chance to add the size of the |
5408 | | non-lazy PLT entries. */ |
5409 | 0 | if (frvfdpic_plt_section (info)) |
5410 | 0 | { |
5411 | 0 | if (frvfdpic_plt_section (info)->size == 0) |
5412 | 0 | frvfdpic_plt_section (info)->flags |= SEC_EXCLUDE; |
5413 | 0 | else if (frvfdpic_plt_section (info)->contents == NULL) |
5414 | 0 | { |
5415 | 0 | frvfdpic_plt_section (info)->contents = |
5416 | 0 | (bfd_byte *) bfd_zalloc (dynobj, |
5417 | 0 | frvfdpic_plt_section (info)->size); |
5418 | 0 | if (frvfdpic_plt_section (info)->contents == NULL) |
5419 | 0 | return false; |
5420 | 0 | frvfdpic_plt_section (info)->alloced = 1; |
5421 | 0 | } |
5422 | 0 | } |
5423 | | |
5424 | 0 | return true; |
5425 | 0 | } |
5426 | | |
5427 | | /* Set the sizes of the dynamic sections. */ |
5428 | | |
5429 | | static bool |
5430 | | elf32_frvfdpic_late_size_sections (bfd *output_bfd, |
5431 | | struct bfd_link_info *info) |
5432 | 0 | { |
5433 | 0 | bfd *dynobj; |
5434 | 0 | asection *s; |
5435 | 0 | struct _frvfdpic_dynamic_got_plt_info gpinfo; |
5436 | |
|
5437 | 0 | dynobj = elf_hash_table (info)->dynobj; |
5438 | 0 | if (dynobj == NULL) |
5439 | 0 | return true; |
5440 | | |
5441 | 0 | if (elf_hash_table (info)->dynamic_sections_created) |
5442 | 0 | { |
5443 | | /* Set the contents of the .interp section to the interpreter. */ |
5444 | 0 | if (bfd_link_executable (info) && !info->nointerp) |
5445 | 0 | { |
5446 | 0 | s = bfd_get_linker_section (dynobj, ".interp"); |
5447 | 0 | BFD_ASSERT (s != NULL); |
5448 | 0 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
5449 | 0 | s->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER; |
5450 | 0 | s->alloced = 1; |
5451 | 0 | } |
5452 | 0 | } |
5453 | |
|
5454 | 0 | memset (&gpinfo, 0, sizeof (gpinfo)); |
5455 | 0 | gpinfo.g.info = info; |
5456 | |
|
5457 | 0 | for (;;) |
5458 | 0 | { |
5459 | 0 | htab_t relocs = frvfdpic_relocs_info (info); |
5460 | |
|
5461 | 0 | htab_traverse (relocs, _frvfdpic_resolve_final_relocs_info, &relocs); |
5462 | |
|
5463 | 0 | if (relocs == frvfdpic_relocs_info (info)) |
5464 | 0 | break; |
5465 | 0 | } |
5466 | |
|
5467 | 0 | htab_traverse (frvfdpic_relocs_info (info), _frvfdpic_count_got_plt_entries, |
5468 | 0 | &gpinfo.g); |
5469 | | |
5470 | | /* Allocate space to save the summary information, we're going to |
5471 | | use it if we're doing relaxations. */ |
5472 | 0 | frvfdpic_dynamic_got_plt_info (info) = bfd_alloc (dynobj, sizeof (gpinfo.g)); |
5473 | |
|
5474 | 0 | if (!_frvfdpic_size_got_plt (output_bfd, &gpinfo)) |
5475 | 0 | return false; |
5476 | | |
5477 | 0 | return _bfd_elf_add_dynamic_tags (output_bfd, info, true); |
5478 | 0 | } |
5479 | | |
5480 | | static bool |
5481 | | elf32_frvfdpic_early_size_sections (bfd *output_bfd, |
5482 | | struct bfd_link_info *info) |
5483 | 0 | { |
5484 | 0 | if (!bfd_link_relocatable (info) |
5485 | 0 | && !bfd_elf_stack_segment_size (output_bfd, info, |
5486 | 0 | "__stacksize", DEFAULT_STACK_SIZE)) |
5487 | 0 | return false; |
5488 | | |
5489 | 0 | return true; |
5490 | 0 | } |
5491 | | |
5492 | | /* Check whether any of the relocations was optimized away, and |
5493 | | subtract it from the relocation or fixup count. */ |
5494 | | static bool |
5495 | | _frvfdpic_check_discarded_relocs (bfd *abfd, asection *sec, |
5496 | | struct bfd_link_info *info, |
5497 | | bool *changed) |
5498 | 0 | { |
5499 | 0 | Elf_Internal_Shdr *symtab_hdr; |
5500 | 0 | struct elf_link_hash_entry **sym_hashes; |
5501 | 0 | Elf_Internal_Rela *rel, *erel; |
5502 | |
|
5503 | 0 | if ((sec->flags & SEC_RELOC) == 0 |
5504 | 0 | || sec->reloc_count == 0) |
5505 | 0 | return true; |
5506 | | |
5507 | 0 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
5508 | 0 | sym_hashes = elf_sym_hashes (abfd); |
5509 | |
|
5510 | 0 | rel = elf_section_data (sec)->relocs; |
5511 | | |
5512 | | /* Now examine each relocation. */ |
5513 | 0 | for (erel = rel + sec->reloc_count; rel < erel; rel++) |
5514 | 0 | { |
5515 | 0 | struct elf_link_hash_entry *h; |
5516 | 0 | unsigned long r_symndx; |
5517 | 0 | struct frvfdpic_relocs_info *picrel; |
5518 | 0 | struct _frvfdpic_dynamic_got_info *dinfo; |
5519 | |
|
5520 | 0 | if (ELF32_R_TYPE (rel->r_info) != R_FRV_32 |
5521 | 0 | && ELF32_R_TYPE (rel->r_info) != R_FRV_FUNCDESC) |
5522 | 0 | continue; |
5523 | | |
5524 | 0 | if (_bfd_elf_section_offset (sec->output_section->owner, |
5525 | 0 | info, sec, rel->r_offset) |
5526 | 0 | != (bfd_vma)-1) |
5527 | 0 | continue; |
5528 | | |
5529 | 0 | r_symndx = ELF32_R_SYM (rel->r_info); |
5530 | 0 | if (r_symndx < symtab_hdr->sh_info) |
5531 | 0 | h = NULL; |
5532 | 0 | else |
5533 | 0 | { |
5534 | 0 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
5535 | 0 | while (h->root.type == bfd_link_hash_indirect |
5536 | 0 | || h->root.type == bfd_link_hash_warning) |
5537 | 0 | h = (struct elf_link_hash_entry *)h->root.u.i.link; |
5538 | 0 | } |
5539 | |
|
5540 | 0 | if (h != NULL) |
5541 | 0 | picrel = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info (info), |
5542 | 0 | abfd, h, |
5543 | 0 | rel->r_addend, NO_INSERT); |
5544 | 0 | else |
5545 | 0 | picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info (info), |
5546 | 0 | abfd, r_symndx, |
5547 | 0 | rel->r_addend, NO_INSERT); |
5548 | |
|
5549 | 0 | if (! picrel) |
5550 | 0 | return false; |
5551 | | |
5552 | 0 | *changed = true; |
5553 | 0 | dinfo = frvfdpic_dynamic_got_plt_info (info); |
5554 | |
|
5555 | 0 | _frvfdpic_count_relocs_fixups (picrel, dinfo, true); |
5556 | 0 | if (ELF32_R_TYPE (rel->r_info) == R_FRV_32) |
5557 | 0 | picrel->relocs32--; |
5558 | 0 | else /* we know (ELF32_R_TYPE (rel->r_info) == R_FRV_FUNCDESC) */ |
5559 | 0 | picrel->relocsfd--; |
5560 | 0 | _frvfdpic_count_relocs_fixups (picrel, dinfo, false); |
5561 | 0 | } |
5562 | | |
5563 | 0 | return true; |
5564 | 0 | } |
5565 | | |
5566 | | static bool |
5567 | | frvfdpic_elf_discard_info (bfd *ibfd, |
5568 | | struct elf_reloc_cookie *cookie ATTRIBUTE_UNUSED, |
5569 | | struct bfd_link_info *info) |
5570 | 0 | { |
5571 | 0 | bool changed = false; |
5572 | 0 | asection *s; |
5573 | 0 | bfd *obfd = NULL; |
5574 | | |
5575 | | /* Account for relaxation of .eh_frame section. */ |
5576 | 0 | for (s = ibfd->sections; s; s = s->next) |
5577 | 0 | if (s->sec_info_type == SEC_INFO_TYPE_EH_FRAME) |
5578 | 0 | { |
5579 | 0 | if (!_frvfdpic_check_discarded_relocs (ibfd, s, info, &changed)) |
5580 | 0 | return false; |
5581 | 0 | obfd = s->output_section->owner; |
5582 | 0 | } |
5583 | | |
5584 | 0 | if (changed) |
5585 | 0 | { |
5586 | 0 | struct _frvfdpic_dynamic_got_plt_info gpinfo; |
5587 | |
|
5588 | 0 | memset (&gpinfo, 0, sizeof (gpinfo)); |
5589 | 0 | memcpy (&gpinfo.g, frvfdpic_dynamic_got_plt_info (info), |
5590 | 0 | sizeof (gpinfo.g)); |
5591 | | |
5592 | | /* Clear GOT and PLT assignments. */ |
5593 | 0 | htab_traverse (frvfdpic_relocs_info (info), |
5594 | 0 | _frvfdpic_reset_got_plt_entries, |
5595 | 0 | NULL); |
5596 | |
|
5597 | 0 | if (!_frvfdpic_size_got_plt (obfd, &gpinfo)) |
5598 | 0 | return false; |
5599 | 0 | } |
5600 | | |
5601 | 0 | return true; |
5602 | 0 | } |
5603 | | |
5604 | | /* Look for opportunities to relax TLS relocations. We can assume |
5605 | | we're linking the main executable or a static-tls library, since |
5606 | | otherwise we wouldn't have got here. */ |
5607 | | |
5608 | | static int |
5609 | | _frvfdpic_relax_got_plt_entries (void **entryp, void *dinfo_) |
5610 | 0 | { |
5611 | 0 | struct frvfdpic_relocs_info *entry = *entryp; |
5612 | 0 | struct _frvfdpic_dynamic_got_info *dinfo = dinfo_; |
5613 | |
|
5614 | 0 | _frvfdpic_relax_tls_entries (entry, dinfo, true); |
5615 | |
|
5616 | 0 | return 1; |
5617 | 0 | } |
5618 | | |
5619 | | static bool |
5620 | | elf32_frvfdpic_relax_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, |
5621 | | struct bfd_link_info *info, bool *again) |
5622 | 0 | { |
5623 | 0 | struct _frvfdpic_dynamic_got_plt_info gpinfo; |
5624 | |
|
5625 | 0 | if (bfd_link_relocatable (info)) |
5626 | 0 | info->callbacks->fatal |
5627 | 0 | (_("%P: --relax and -r may not be used together\n")); |
5628 | | |
5629 | | /* If we return early, we didn't change anything. */ |
5630 | 0 | *again = false; |
5631 | | |
5632 | | /* We'll do our thing when requested to relax the GOT section. */ |
5633 | 0 | if (sec != frvfdpic_got_section (info)) |
5634 | 0 | return true; |
5635 | | |
5636 | | /* We can only relax when linking the main executable or a library |
5637 | | that can't be dlopened. */ |
5638 | 0 | if (! bfd_link_executable (info) && ! (info->flags & DF_STATIC_TLS)) |
5639 | 0 | return true; |
5640 | | |
5641 | | /* If there isn't a TLS section for this binary, we can't do |
5642 | | anything about its TLS relocations (it probably doesn't have |
5643 | | any. */ |
5644 | 0 | if (elf_hash_table (info)->tls_sec == NULL) |
5645 | 0 | return true; |
5646 | | |
5647 | 0 | memset (&gpinfo, 0, sizeof (gpinfo)); |
5648 | 0 | memcpy (&gpinfo.g, frvfdpic_dynamic_got_plt_info (info), sizeof (gpinfo.g)); |
5649 | | |
5650 | | /* Now look for opportunities to relax, adjusting the GOT usage |
5651 | | as needed. */ |
5652 | 0 | htab_traverse (frvfdpic_relocs_info (info), |
5653 | 0 | _frvfdpic_relax_got_plt_entries, |
5654 | 0 | &gpinfo.g); |
5655 | | |
5656 | | /* If we changed anything, reset and re-assign GOT and PLT entries. */ |
5657 | 0 | if (memcmp (frvfdpic_dynamic_got_plt_info (info), |
5658 | 0 | &gpinfo.g, sizeof (gpinfo.g)) != 0) |
5659 | 0 | { |
5660 | | /* Clear GOT and PLT assignments. */ |
5661 | 0 | htab_traverse (frvfdpic_relocs_info (info), |
5662 | 0 | _frvfdpic_reset_got_plt_entries, |
5663 | 0 | NULL); |
5664 | | |
5665 | | /* The owner of the TLS section is the output bfd. There should |
5666 | | be a better way to get to it. */ |
5667 | 0 | if (!_frvfdpic_size_got_plt (elf_hash_table (info)->tls_sec->owner, |
5668 | 0 | &gpinfo)) |
5669 | 0 | return false; |
5670 | | |
5671 | | /* Repeat until we don't make any further changes. We could fail to |
5672 | | introduce changes in a round if, for example, the 12-bit range is |
5673 | | full, but we later release some space by getting rid of TLS |
5674 | | descriptors in it. We have to repeat the whole process because |
5675 | | we might have changed the size of a section processed before this |
5676 | | one. */ |
5677 | 0 | *again = true; |
5678 | 0 | } |
5679 | | |
5680 | 0 | return true; |
5681 | 0 | } |
5682 | | |
5683 | | /* Fill in code and data in dynamic sections. */ |
5684 | | |
5685 | | static bool |
5686 | | elf32_frv_finish_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
5687 | | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
5688 | 0 | { |
5689 | | /* Nothing to be done for non-FDPIC. */ |
5690 | 0 | return true; |
5691 | 0 | } |
5692 | | |
5693 | | static bool |
5694 | | elf32_frvfdpic_finish_dynamic_sections (bfd *output_bfd, |
5695 | | struct bfd_link_info *info) |
5696 | 0 | { |
5697 | 0 | bfd *dynobj; |
5698 | 0 | asection *sdyn; |
5699 | |
|
5700 | 0 | dynobj = elf_hash_table (info)->dynobj; |
5701 | |
|
5702 | 0 | if (frvfdpic_dynamic_got_plt_info (info)) |
5703 | 0 | { |
5704 | 0 | BFD_ASSERT (frvfdpic_dynamic_got_plt_info (info)->tls_ret_refs == 0); |
5705 | 0 | } |
5706 | 0 | if (frvfdpic_got_section (info)) |
5707 | 0 | { |
5708 | 0 | BFD_ASSERT (frvfdpic_gotrel_section (info)->size |
5709 | 0 | == (frvfdpic_gotrel_section (info)->reloc_count |
5710 | 0 | * sizeof (Elf32_External_Rel))); |
5711 | |
|
5712 | 0 | if (frvfdpic_gotfixup_section (info)) |
5713 | 0 | { |
5714 | 0 | struct elf_link_hash_entry *hgot = elf_hash_table (info)->hgot; |
5715 | 0 | bfd_vma got_value = hgot->root.u.def.value |
5716 | 0 | + hgot->root.u.def.section->output_section->vma |
5717 | 0 | + hgot->root.u.def.section->output_offset; |
5718 | 0 | struct bfd_link_hash_entry *hend; |
5719 | |
|
5720 | 0 | _frvfdpic_add_rofixup (output_bfd, frvfdpic_gotfixup_section (info), |
5721 | 0 | got_value, 0); |
5722 | |
|
5723 | 0 | if (frvfdpic_gotfixup_section (info)->size |
5724 | 0 | != (frvfdpic_gotfixup_section (info)->reloc_count * 4)) |
5725 | 0 | { |
5726 | 0 | error: |
5727 | 0 | info->callbacks->einfo |
5728 | 0 | ("LINKER BUG: .rofixup section size mismatch\n"); |
5729 | 0 | return false; |
5730 | 0 | } |
5731 | | |
5732 | 0 | hend = bfd_link_hash_lookup (info->hash, "__ROFIXUP_END__", |
5733 | 0 | false, false, true); |
5734 | 0 | if (hend |
5735 | 0 | && (hend->type == bfd_link_hash_defined |
5736 | 0 | || hend->type == bfd_link_hash_defweak) |
5737 | 0 | && hend->u.def.section->output_section != NULL) |
5738 | 0 | { |
5739 | 0 | bfd_vma value = |
5740 | 0 | frvfdpic_gotfixup_section (info)->output_section->vma |
5741 | 0 | + frvfdpic_gotfixup_section (info)->output_offset |
5742 | 0 | + frvfdpic_gotfixup_section (info)->size |
5743 | 0 | - hend->u.def.section->output_section->vma |
5744 | 0 | - hend->u.def.section->output_offset; |
5745 | 0 | BFD_ASSERT (hend->u.def.value == value); |
5746 | 0 | if (hend->u.def.value != value) |
5747 | 0 | goto error; |
5748 | 0 | } |
5749 | 0 | } |
5750 | 0 | } |
5751 | 0 | if (frvfdpic_pltrel_section (info)) |
5752 | 0 | { |
5753 | 0 | BFD_ASSERT (frvfdpic_pltrel_section (info)->size |
5754 | 0 | == (frvfdpic_pltrel_section (info)->reloc_count |
5755 | 0 | * sizeof (Elf32_External_Rel))); |
5756 | 0 | } |
5757 | | |
5758 | |
|
5759 | 0 | if (elf_hash_table (info)->dynamic_sections_created) |
5760 | 0 | { |
5761 | 0 | Elf32_External_Dyn * dyncon; |
5762 | 0 | Elf32_External_Dyn * dynconend; |
5763 | |
|
5764 | 0 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
5765 | |
|
5766 | 0 | BFD_ASSERT (sdyn != NULL); |
5767 | |
|
5768 | 0 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
5769 | 0 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
5770 | |
|
5771 | 0 | for (; dyncon < dynconend; dyncon++) |
5772 | 0 | { |
5773 | 0 | Elf_Internal_Dyn dyn; |
5774 | |
|
5775 | 0 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
5776 | |
|
5777 | 0 | switch (dyn.d_tag) |
5778 | 0 | { |
5779 | 0 | default: |
5780 | 0 | break; |
5781 | | |
5782 | 0 | case DT_PLTGOT: |
5783 | 0 | dyn.d_un.d_ptr = frvfdpic_got_section (info)->output_section->vma |
5784 | 0 | + frvfdpic_got_section (info)->output_offset |
5785 | 0 | + frvfdpic_got_initial_offset (info); |
5786 | 0 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
5787 | 0 | break; |
5788 | | |
5789 | 0 | case DT_JMPREL: |
5790 | 0 | dyn.d_un.d_ptr = frvfdpic_pltrel_section (info) |
5791 | 0 | ->output_section->vma |
5792 | 0 | + frvfdpic_pltrel_section (info)->output_offset; |
5793 | 0 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
5794 | 0 | break; |
5795 | | |
5796 | 0 | case DT_PLTRELSZ: |
5797 | 0 | dyn.d_un.d_val = frvfdpic_pltrel_section (info)->size; |
5798 | 0 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
5799 | 0 | break; |
5800 | 0 | } |
5801 | 0 | } |
5802 | 0 | } |
5803 | | |
5804 | 0 | return true; |
5805 | 0 | } |
5806 | | |
5807 | | /* Adjust a symbol defined by a dynamic object and referenced by a |
5808 | | regular object. */ |
5809 | | |
5810 | | static bool |
5811 | | elf32_frvfdpic_adjust_dynamic_symbol |
5812 | | (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
5813 | | struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) |
5814 | 0 | { |
5815 | 0 | bfd * dynobj; |
5816 | |
|
5817 | 0 | dynobj = elf_hash_table (info)->dynobj; |
5818 | | |
5819 | | /* Make sure we know what is going on here. */ |
5820 | 0 | BFD_ASSERT (dynobj != NULL |
5821 | 0 | && (h->is_weakalias |
5822 | 0 | || (h->def_dynamic |
5823 | 0 | && h->ref_regular |
5824 | 0 | && !h->def_regular))); |
5825 | | |
5826 | | /* If this is a weak symbol, and there is a real definition, the |
5827 | | processor independent code will have arranged for us to see the |
5828 | | real definition first, and we can just use the same value. */ |
5829 | 0 | if (h->is_weakalias) |
5830 | 0 | { |
5831 | 0 | struct elf_link_hash_entry *def = weakdef (h); |
5832 | 0 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); |
5833 | 0 | h->root.u.def.section = def->root.u.def.section; |
5834 | 0 | h->root.u.def.value = def->root.u.def.value; |
5835 | 0 | return true; |
5836 | 0 | } |
5837 | | |
5838 | 0 | return true; |
5839 | 0 | } |
5840 | | |
5841 | | /* Perform any actions needed for dynamic symbols. */ |
5842 | | |
5843 | | static bool |
5844 | | elf32_frvfdpic_finish_dynamic_symbol |
5845 | | (bfd *output_bfd ATTRIBUTE_UNUSED, |
5846 | | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
5847 | | struct elf_link_hash_entry *h ATTRIBUTE_UNUSED, |
5848 | | Elf_Internal_Sym *sym ATTRIBUTE_UNUSED) |
5849 | 0 | { |
5850 | 0 | return true; |
5851 | 0 | } |
5852 | | |
5853 | | /* Decide whether to attempt to turn absptr or lsda encodings in |
5854 | | shared libraries into pcrel within the given input section. */ |
5855 | | |
5856 | | static bool |
5857 | | frvfdpic_elf_use_relative_eh_frame |
5858 | | (bfd *input_bfd ATTRIBUTE_UNUSED, |
5859 | | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
5860 | | asection *eh_frame_section ATTRIBUTE_UNUSED) |
5861 | 0 | { |
5862 | | /* We can't use PC-relative encodings in FDPIC binaries, in general. */ |
5863 | 0 | return false; |
5864 | 0 | } |
5865 | | |
5866 | | /* Adjust the contents of an eh_frame_hdr section before they're output. */ |
5867 | | |
5868 | | static bfd_byte |
5869 | | frvfdpic_elf_encode_eh_address (bfd *abfd, |
5870 | | struct bfd_link_info *info, |
5871 | | asection *osec, bfd_vma offset, |
5872 | | asection *loc_sec, bfd_vma loc_offset, |
5873 | | bfd_vma *encoded) |
5874 | 0 | { |
5875 | 0 | struct elf_link_hash_entry *h; |
5876 | |
|
5877 | 0 | h = elf_hash_table (info)->hgot; |
5878 | 0 | BFD_ASSERT (h && h->root.type == bfd_link_hash_defined); |
5879 | |
|
5880 | 0 | if (! h || (_frvfdpic_osec_to_segment (abfd, osec) |
5881 | 0 | == _frvfdpic_osec_to_segment (abfd, loc_sec->output_section))) |
5882 | 0 | return _bfd_elf_encode_eh_address (abfd, info, osec, offset, |
5883 | 0 | loc_sec, loc_offset, encoded); |
5884 | | |
5885 | 0 | BFD_ASSERT (_frvfdpic_osec_to_segment (abfd, osec) |
5886 | 0 | == (_frvfdpic_osec_to_segment |
5887 | 0 | (abfd, h->root.u.def.section->output_section))); |
5888 | |
|
5889 | 0 | *encoded = osec->vma + offset |
5890 | 0 | - (h->root.u.def.value |
5891 | 0 | + h->root.u.def.section->output_section->vma |
5892 | 0 | + h->root.u.def.section->output_offset); |
5893 | |
|
5894 | 0 | return DW_EH_PE_datarel | DW_EH_PE_sdata4; |
5895 | 0 | } |
5896 | | |
5897 | | /* Look through the relocs for a section during the first phase. |
5898 | | |
5899 | | Besides handling virtual table relocs for gc, we have to deal with |
5900 | | all sorts of PIC-related relocations. We describe below the |
5901 | | general plan on how to handle such relocations, even though we only |
5902 | | collect information at this point, storing them in hash tables for |
5903 | | perusal of later passes. |
5904 | | |
5905 | | 32 relocations are propagated to the linker output when creating |
5906 | | position-independent output. LO16 and HI16 relocations are not |
5907 | | supposed to be encountered in this case. |
5908 | | |
5909 | | LABEL16 should always be resolvable by the linker, since it's only |
5910 | | used by branches. |
5911 | | |
5912 | | LABEL24, on the other hand, is used by calls. If it turns out that |
5913 | | the target of a call is a dynamic symbol, a PLT entry must be |
5914 | | created for it, which triggers the creation of a private function |
5915 | | descriptor and, unless lazy binding is disabled, a lazy PLT entry. |
5916 | | |
5917 | | GPREL relocations require the referenced symbol to be in the same |
5918 | | segment as _gp, but this can only be checked later. |
5919 | | |
5920 | | All GOT, GOTOFF and FUNCDESC relocations require a .got section to |
5921 | | exist. LABEL24 might as well, since it may require a PLT entry, |
5922 | | that will require a got. |
5923 | | |
5924 | | Non-FUNCDESC GOT relocations require a GOT entry to be created |
5925 | | regardless of whether the symbol is dynamic. However, since a |
5926 | | global symbol that turns out to not be exported may have the same |
5927 | | address of a non-dynamic symbol, we don't assign GOT entries at |
5928 | | this point, such that we can share them in this case. A relocation |
5929 | | for the GOT entry always has to be created, be it to offset a |
5930 | | private symbol by the section load address, be it to get the symbol |
5931 | | resolved dynamically. |
5932 | | |
5933 | | FUNCDESC GOT relocations require a GOT entry to be created, and |
5934 | | handled as if a FUNCDESC relocation was applied to the GOT entry in |
5935 | | an object file. |
5936 | | |
5937 | | FUNCDESC relocations referencing a symbol that turns out to NOT be |
5938 | | dynamic cause a private function descriptor to be created. The |
5939 | | FUNCDESC relocation then decays to a 32 relocation that points at |
5940 | | the private descriptor. If the symbol is dynamic, the FUNCDESC |
5941 | | relocation is propagated to the linker output, such that the |
5942 | | dynamic linker creates the canonical descriptor, pointing to the |
5943 | | dynamically-resolved definition of the function. |
5944 | | |
5945 | | Non-FUNCDESC GOTOFF relocations must always refer to non-dynamic |
5946 | | symbols that are assigned to the same segment as the GOT, but we |
5947 | | can only check this later, after we know the complete set of |
5948 | | symbols defined and/or exported. |
5949 | | |
5950 | | FUNCDESC GOTOFF relocations require a function descriptor to be |
5951 | | created and, unless lazy binding is disabled or the symbol is not |
5952 | | dynamic, a lazy PLT entry. Since we can't tell at this point |
5953 | | whether a symbol is going to be dynamic, we have to decide later |
5954 | | whether to create a lazy PLT entry or bind the descriptor directly |
5955 | | to the private function. |
5956 | | |
5957 | | FUNCDESC_VALUE relocations are not supposed to be present in object |
5958 | | files, but they may very well be simply propagated to the linker |
5959 | | output, since they have no side effect. |
5960 | | |
5961 | | |
5962 | | A function descriptor always requires a FUNCDESC_VALUE relocation. |
5963 | | Whether it's in .plt.rel or not depends on whether lazy binding is |
5964 | | enabled and on whether the referenced symbol is dynamic. |
5965 | | |
5966 | | The existence of a lazy PLT requires the resolverStub lazy PLT |
5967 | | entry to be present. |
5968 | | |
5969 | | |
5970 | | As for assignment of GOT, PLT and lazy PLT entries, and private |
5971 | | descriptors, we might do them all sequentially, but we can do |
5972 | | better than that. For example, we can place GOT entries and |
5973 | | private function descriptors referenced using 12-bit operands |
5974 | | closer to the PIC register value, such that these relocations don't |
5975 | | overflow. Those that are only referenced with LO16 relocations |
5976 | | could come next, but we may as well place PLT-required function |
5977 | | descriptors in the 12-bit range to make them shorter. Symbols |
5978 | | referenced with LO16/HI16 may come next, but we may place |
5979 | | additional function descriptors in the 16-bit range if we can |
5980 | | reliably tell that we've already placed entries that are ever |
5981 | | referenced with only LO16. PLT entries are therefore generated as |
5982 | | small as possible, while not introducing relocation overflows in |
5983 | | GOT or FUNCDESC_GOTOFF relocations. Lazy PLT entries could be |
5984 | | generated before or after PLT entries, but not intermingled with |
5985 | | them, such that we can have more lazy PLT entries in range for a |
5986 | | branch to the resolverStub. The resolverStub should be emitted at |
5987 | | the most distant location from the first lazy PLT entry such that |
5988 | | it's still in range for a branch, or closer, if there isn't a need |
5989 | | for so many lazy PLT entries. Additional lazy PLT entries may be |
5990 | | emitted after the resolverStub, as long as branches are still in |
5991 | | range. If the branch goes out of range, longer lazy PLT entries |
5992 | | are emitted. |
5993 | | |
5994 | | We could further optimize PLT and lazy PLT entries by giving them |
5995 | | priority in assignment to closer-to-gr17 locations depending on the |
5996 | | number of occurrences of references to them (assuming a function |
5997 | | that's called more often is more important for performance, so its |
5998 | | PLT entry should be faster), or taking hints from the compiler. |
5999 | | Given infinite time and money... :-) */ |
6000 | | |
6001 | | static bool |
6002 | | elf32_frv_check_relocs (bfd *abfd, |
6003 | | struct bfd_link_info *info, |
6004 | | asection *sec, |
6005 | | const Elf_Internal_Rela *relocs) |
6006 | 0 | { |
6007 | 0 | Elf_Internal_Shdr *symtab_hdr; |
6008 | 0 | struct elf_link_hash_entry **sym_hashes; |
6009 | 0 | const Elf_Internal_Rela *rel; |
6010 | 0 | const Elf_Internal_Rela *rel_end; |
6011 | 0 | bfd *dynobj; |
6012 | 0 | struct frvfdpic_relocs_info *picrel; |
6013 | |
|
6014 | 0 | if (bfd_link_relocatable (info)) |
6015 | 0 | return true; |
6016 | | |
6017 | 0 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
6018 | 0 | sym_hashes = elf_sym_hashes (abfd); |
6019 | |
|
6020 | 0 | dynobj = elf_hash_table (info)->dynobj; |
6021 | 0 | rel_end = relocs + sec->reloc_count; |
6022 | 0 | for (rel = relocs; rel < rel_end; rel++) |
6023 | 0 | { |
6024 | 0 | struct elf_link_hash_entry *h; |
6025 | 0 | unsigned long r_symndx; |
6026 | |
|
6027 | 0 | r_symndx = ELF32_R_SYM (rel->r_info); |
6028 | 0 | if (r_symndx < symtab_hdr->sh_info) |
6029 | 0 | h = NULL; |
6030 | 0 | else |
6031 | 0 | { |
6032 | 0 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
6033 | 0 | while (h->root.type == bfd_link_hash_indirect |
6034 | 0 | || h->root.type == bfd_link_hash_warning) |
6035 | 0 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
6036 | 0 | } |
6037 | |
|
6038 | 0 | switch (ELF32_R_TYPE (rel->r_info)) |
6039 | 0 | { |
6040 | 0 | case R_FRV_GETTLSOFF: |
6041 | 0 | case R_FRV_TLSDESC_VALUE: |
6042 | 0 | case R_FRV_GOTTLSDESC12: |
6043 | 0 | case R_FRV_GOTTLSDESCHI: |
6044 | 0 | case R_FRV_GOTTLSDESCLO: |
6045 | 0 | case R_FRV_GOTTLSOFF12: |
6046 | 0 | case R_FRV_GOTTLSOFFHI: |
6047 | 0 | case R_FRV_GOTTLSOFFLO: |
6048 | 0 | case R_FRV_TLSOFF: |
6049 | 0 | case R_FRV_GOT12: |
6050 | 0 | case R_FRV_GOTHI: |
6051 | 0 | case R_FRV_GOTLO: |
6052 | 0 | case R_FRV_FUNCDESC_GOT12: |
6053 | 0 | case R_FRV_FUNCDESC_GOTHI: |
6054 | 0 | case R_FRV_FUNCDESC_GOTLO: |
6055 | 0 | case R_FRV_GOTOFF12: |
6056 | 0 | case R_FRV_GOTOFFHI: |
6057 | 0 | case R_FRV_GOTOFFLO: |
6058 | 0 | case R_FRV_FUNCDESC_GOTOFF12: |
6059 | 0 | case R_FRV_FUNCDESC_GOTOFFHI: |
6060 | 0 | case R_FRV_FUNCDESC_GOTOFFLO: |
6061 | 0 | case R_FRV_FUNCDESC: |
6062 | 0 | case R_FRV_FUNCDESC_VALUE: |
6063 | 0 | case R_FRV_TLSMOFF12: |
6064 | 0 | case R_FRV_TLSMOFFHI: |
6065 | 0 | case R_FRV_TLSMOFFLO: |
6066 | 0 | case R_FRV_TLSMOFF: |
6067 | 0 | if (! IS_FDPIC (abfd)) |
6068 | 0 | goto bad_reloc; |
6069 | | /* Fall through. */ |
6070 | 0 | case R_FRV_GPREL12: |
6071 | 0 | case R_FRV_GPRELU12: |
6072 | 0 | case R_FRV_GPRELHI: |
6073 | 0 | case R_FRV_GPRELLO: |
6074 | 0 | case R_FRV_LABEL24: |
6075 | 0 | case R_FRV_32: |
6076 | 0 | if (! dynobj) |
6077 | 0 | { |
6078 | 0 | elf_hash_table (info)->dynobj = dynobj = abfd; |
6079 | 0 | if (! _frv_create_got_section (abfd, info)) |
6080 | 0 | return false; |
6081 | 0 | } |
6082 | 0 | if (! IS_FDPIC (abfd)) |
6083 | 0 | { |
6084 | 0 | picrel = NULL; |
6085 | 0 | break; |
6086 | 0 | } |
6087 | 0 | if (h != NULL) |
6088 | 0 | { |
6089 | 0 | if (h->dynindx == -1) |
6090 | 0 | switch (ELF_ST_VISIBILITY (h->other)) |
6091 | 0 | { |
6092 | 0 | case STV_INTERNAL: |
6093 | 0 | case STV_HIDDEN: |
6094 | 0 | break; |
6095 | 0 | default: |
6096 | 0 | bfd_elf_link_record_dynamic_symbol (info, h); |
6097 | 0 | break; |
6098 | 0 | } |
6099 | 0 | picrel |
6100 | 0 | = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info (info), |
6101 | 0 | abfd, h, |
6102 | 0 | rel->r_addend, INSERT); |
6103 | 0 | } |
6104 | 0 | else |
6105 | 0 | picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info |
6106 | 0 | (info), abfd, r_symndx, |
6107 | 0 | rel->r_addend, INSERT); |
6108 | 0 | if (! picrel) |
6109 | 0 | return false; |
6110 | 0 | break; |
6111 | | |
6112 | 0 | default: |
6113 | 0 | picrel = NULL; |
6114 | 0 | break; |
6115 | 0 | } |
6116 | | |
6117 | 0 | switch (ELF32_R_TYPE (rel->r_info)) |
6118 | 0 | { |
6119 | 0 | case R_FRV_LABEL24: |
6120 | 0 | if (IS_FDPIC (abfd)) |
6121 | 0 | picrel->call = 1; |
6122 | 0 | break; |
6123 | | |
6124 | 0 | case R_FRV_FUNCDESC_VALUE: |
6125 | 0 | picrel->relocsfdv++; |
6126 | 0 | if (bfd_section_flags (sec) & SEC_ALLOC) |
6127 | 0 | picrel->relocs32--; |
6128 | | /* Fall through. */ |
6129 | |
|
6130 | 0 | case R_FRV_32: |
6131 | 0 | if (! IS_FDPIC (abfd)) |
6132 | 0 | break; |
6133 | | |
6134 | 0 | picrel->sym = 1; |
6135 | 0 | if (bfd_section_flags (sec) & SEC_ALLOC) |
6136 | 0 | picrel->relocs32++; |
6137 | 0 | break; |
6138 | | |
6139 | 0 | case R_FRV_GOT12: |
6140 | 0 | picrel->got12 = 1; |
6141 | 0 | break; |
6142 | | |
6143 | 0 | case R_FRV_GOTHI: |
6144 | 0 | case R_FRV_GOTLO: |
6145 | 0 | picrel->gothilo = 1; |
6146 | 0 | break; |
6147 | | |
6148 | 0 | case R_FRV_FUNCDESC_GOT12: |
6149 | 0 | picrel->fdgot12 = 1; |
6150 | 0 | break; |
6151 | | |
6152 | 0 | case R_FRV_FUNCDESC_GOTHI: |
6153 | 0 | case R_FRV_FUNCDESC_GOTLO: |
6154 | 0 | picrel->fdgothilo = 1; |
6155 | 0 | break; |
6156 | | |
6157 | 0 | case R_FRV_GOTOFF12: |
6158 | 0 | case R_FRV_GOTOFFHI: |
6159 | 0 | case R_FRV_GOTOFFLO: |
6160 | 0 | picrel->gotoff = 1; |
6161 | 0 | break; |
6162 | | |
6163 | 0 | case R_FRV_FUNCDESC_GOTOFF12: |
6164 | 0 | picrel->fdgoff12 = 1; |
6165 | 0 | break; |
6166 | | |
6167 | 0 | case R_FRV_FUNCDESC_GOTOFFHI: |
6168 | 0 | case R_FRV_FUNCDESC_GOTOFFLO: |
6169 | 0 | picrel->fdgoffhilo = 1; |
6170 | 0 | break; |
6171 | | |
6172 | 0 | case R_FRV_FUNCDESC: |
6173 | 0 | picrel->fd = 1; |
6174 | 0 | picrel->relocsfd++; |
6175 | 0 | break; |
6176 | | |
6177 | 0 | case R_FRV_GETTLSOFF: |
6178 | 0 | picrel->tlsplt = 1; |
6179 | 0 | break; |
6180 | | |
6181 | 0 | case R_FRV_TLSDESC_VALUE: |
6182 | 0 | picrel->relocstlsd++; |
6183 | 0 | goto bad_reloc; |
6184 | | |
6185 | 0 | case R_FRV_GOTTLSDESC12: |
6186 | 0 | picrel->tlsdesc12 = 1; |
6187 | 0 | break; |
6188 | | |
6189 | 0 | case R_FRV_GOTTLSDESCHI: |
6190 | 0 | case R_FRV_GOTTLSDESCLO: |
6191 | 0 | picrel->tlsdeschilo = 1; |
6192 | 0 | break; |
6193 | | |
6194 | 0 | case R_FRV_TLSMOFF12: |
6195 | 0 | case R_FRV_TLSMOFFHI: |
6196 | 0 | case R_FRV_TLSMOFFLO: |
6197 | 0 | case R_FRV_TLSMOFF: |
6198 | 0 | break; |
6199 | | |
6200 | 0 | case R_FRV_GOTTLSOFF12: |
6201 | 0 | picrel->tlsoff12 = 1; |
6202 | 0 | info->flags |= DF_STATIC_TLS; |
6203 | 0 | break; |
6204 | | |
6205 | 0 | case R_FRV_GOTTLSOFFHI: |
6206 | 0 | case R_FRV_GOTTLSOFFLO: |
6207 | 0 | picrel->tlsoffhilo = 1; |
6208 | 0 | info->flags |= DF_STATIC_TLS; |
6209 | 0 | break; |
6210 | | |
6211 | 0 | case R_FRV_TLSOFF: |
6212 | 0 | picrel->relocstlsoff++; |
6213 | 0 | info->flags |= DF_STATIC_TLS; |
6214 | 0 | goto bad_reloc; |
6215 | | |
6216 | | /* This relocation describes the C++ object vtable hierarchy. |
6217 | | Reconstruct it for later use during GC. */ |
6218 | 0 | case R_FRV_GNU_VTINHERIT: |
6219 | 0 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
6220 | 0 | return false; |
6221 | 0 | break; |
6222 | | |
6223 | | /* This relocation describes which C++ vtable entries are actually |
6224 | | used. Record for later use during GC. */ |
6225 | 0 | case R_FRV_GNU_VTENTRY: |
6226 | 0 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
6227 | 0 | return false; |
6228 | 0 | break; |
6229 | | |
6230 | 0 | case R_FRV_LABEL16: |
6231 | 0 | case R_FRV_LO16: |
6232 | 0 | case R_FRV_HI16: |
6233 | 0 | case R_FRV_GPREL12: |
6234 | 0 | case R_FRV_GPRELU12: |
6235 | 0 | case R_FRV_GPREL32: |
6236 | 0 | case R_FRV_GPRELHI: |
6237 | 0 | case R_FRV_GPRELLO: |
6238 | 0 | case R_FRV_TLSDESC_RELAX: |
6239 | 0 | case R_FRV_GETTLSOFF_RELAX: |
6240 | 0 | case R_FRV_TLSOFF_RELAX: |
6241 | 0 | break; |
6242 | | |
6243 | 0 | default: |
6244 | 0 | bad_reloc: |
6245 | | /* xgettext:c-format */ |
6246 | 0 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
6247 | 0 | abfd, (unsigned int) ELF32_R_TYPE (rel->r_info)); |
6248 | 0 | return false; |
6249 | 0 | } |
6250 | 0 | } |
6251 | | |
6252 | 0 | return true; |
6253 | 0 | } |
6254 | | |
6255 | | |
6256 | | /* Return the machine subcode from the ELF e_flags header. */ |
6257 | | |
6258 | | static int |
6259 | | elf32_frv_machine (bfd *abfd) |
6260 | 36 | { |
6261 | 36 | switch (elf_elfheader (abfd)->e_flags & EF_FRV_CPU_MASK) |
6262 | 36 | { |
6263 | 9 | default: break; |
6264 | 9 | case EF_FRV_CPU_FR550: return bfd_mach_fr550; |
6265 | 9 | case EF_FRV_CPU_FR500: return bfd_mach_fr500; |
6266 | 0 | case EF_FRV_CPU_FR450: return bfd_mach_fr450; |
6267 | 3 | case EF_FRV_CPU_FR405: return bfd_mach_fr400; |
6268 | 3 | case EF_FRV_CPU_FR400: return bfd_mach_fr400; |
6269 | 3 | case EF_FRV_CPU_FR300: return bfd_mach_fr300; |
6270 | 3 | case EF_FRV_CPU_SIMPLE: return bfd_mach_frvsimple; |
6271 | 3 | case EF_FRV_CPU_TOMCAT: return bfd_mach_frvtomcat; |
6272 | 36 | } |
6273 | | |
6274 | 9 | return bfd_mach_frv; |
6275 | 36 | } |
6276 | | |
6277 | | /* Set the right machine number for a FRV ELF file. */ |
6278 | | |
6279 | | static bool |
6280 | | elf32_frv_object_p (bfd *abfd) |
6281 | 36 | { |
6282 | 36 | bfd_default_set_arch_mach (abfd, bfd_arch_frv, elf32_frv_machine (abfd)); |
6283 | 36 | return (((elf_elfheader (abfd)->e_flags & EF_FRV_FDPIC) != 0) |
6284 | 36 | == (IS_FDPIC (abfd))); |
6285 | 36 | } |
6286 | | |
6287 | | /* Function to set the ELF flag bits. */ |
6288 | | |
6289 | | static bool |
6290 | | frv_elf_set_private_flags (bfd *abfd, flagword flags) |
6291 | 0 | { |
6292 | 0 | elf_elfheader (abfd)->e_flags = flags; |
6293 | 0 | elf_flags_init (abfd) = true; |
6294 | 0 | return true; |
6295 | 0 | } |
6296 | | |
6297 | | /* Return true if the architecture described by elf header flag |
6298 | | EXTENSION is an extension of the architecture described by BASE. */ |
6299 | | |
6300 | | static bool |
6301 | | frv_elf_arch_extension_p (flagword base, flagword extension) |
6302 | 0 | { |
6303 | 0 | if (base == extension) |
6304 | 0 | return true; |
6305 | | |
6306 | | /* CPU_GENERIC code can be merged with code for a specific |
6307 | | architecture, in which case the result is marked as being |
6308 | | for the specific architecture. Everything is therefore |
6309 | | an extension of CPU_GENERIC. */ |
6310 | 0 | if (base == EF_FRV_CPU_GENERIC) |
6311 | 0 | return true; |
6312 | | |
6313 | 0 | if (extension == EF_FRV_CPU_FR450) |
6314 | 0 | if (base == EF_FRV_CPU_FR400 || base == EF_FRV_CPU_FR405) |
6315 | 0 | return true; |
6316 | | |
6317 | 0 | if (extension == EF_FRV_CPU_FR405) |
6318 | 0 | if (base == EF_FRV_CPU_FR400) |
6319 | 0 | return true; |
6320 | | |
6321 | 0 | return false; |
6322 | 0 | } |
6323 | | |
6324 | | /* Merge backend specific data from an object file to the output |
6325 | | object file when linking. */ |
6326 | | |
6327 | | static bool |
6328 | | frv_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
6329 | 0 | { |
6330 | 0 | bfd *obfd = info->output_bfd; |
6331 | 0 | flagword old_flags, old_partial; |
6332 | 0 | flagword new_flags, new_partial; |
6333 | 0 | bool error = false; |
6334 | 0 | char new_opt[80]; |
6335 | 0 | char old_opt[80]; |
6336 | | |
6337 | | /* FIXME: What should be checked when linking shared libraries? */ |
6338 | 0 | if ((ibfd->flags & DYNAMIC) != 0) |
6339 | 0 | return true; |
6340 | | |
6341 | 0 | new_opt[0] = old_opt[0] = '\0'; |
6342 | 0 | new_flags = elf_elfheader (ibfd)->e_flags; |
6343 | 0 | old_flags = elf_elfheader (obfd)->e_flags; |
6344 | |
|
6345 | 0 | if (new_flags & EF_FRV_FDPIC) |
6346 | 0 | new_flags &= ~EF_FRV_PIC; |
6347 | |
|
6348 | | #ifdef DEBUG |
6349 | | _bfd_error_handler |
6350 | | ("old_flags = 0x%.8x, new_flags = 0x%.8x, init = %s, filename = %s", |
6351 | | old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no", |
6352 | | bfd_get_filename (ibfd)); |
6353 | | #endif |
6354 | |
|
6355 | 0 | if (!elf_flags_init (obfd)) /* First call, no flags set. */ |
6356 | 0 | { |
6357 | 0 | elf_flags_init (obfd) = true; |
6358 | 0 | old_flags = new_flags; |
6359 | 0 | } |
6360 | | |
6361 | 0 | else if (new_flags == old_flags) /* Compatible flags are ok. */ |
6362 | 0 | ; |
6363 | | |
6364 | 0 | else /* Possibly incompatible flags. */ |
6365 | 0 | { |
6366 | | /* Warn if different # of gprs are used. Note, 0 means nothing is |
6367 | | said about the size of gprs. */ |
6368 | 0 | new_partial = (new_flags & EF_FRV_GPR_MASK); |
6369 | 0 | old_partial = (old_flags & EF_FRV_GPR_MASK); |
6370 | 0 | if (new_partial == old_partial) |
6371 | 0 | ; |
6372 | | |
6373 | 0 | else if (new_partial == 0) |
6374 | 0 | ; |
6375 | | |
6376 | 0 | else if (old_partial == 0) |
6377 | 0 | old_flags |= new_partial; |
6378 | | |
6379 | 0 | else |
6380 | 0 | { |
6381 | 0 | switch (new_partial) |
6382 | 0 | { |
6383 | 0 | default: strcat (new_opt, " -mgpr-??"); break; |
6384 | 0 | case EF_FRV_GPR_32: strcat (new_opt, " -mgpr-32"); break; |
6385 | 0 | case EF_FRV_GPR_64: strcat (new_opt, " -mgpr-64"); break; |
6386 | 0 | } |
6387 | | |
6388 | 0 | switch (old_partial) |
6389 | 0 | { |
6390 | 0 | default: strcat (old_opt, " -mgpr-??"); break; |
6391 | 0 | case EF_FRV_GPR_32: strcat (old_opt, " -mgpr-32"); break; |
6392 | 0 | case EF_FRV_GPR_64: strcat (old_opt, " -mgpr-64"); break; |
6393 | 0 | } |
6394 | 0 | } |
6395 | | |
6396 | | /* Warn if different # of fprs are used. Note, 0 means nothing is |
6397 | | said about the size of fprs. */ |
6398 | 0 | new_partial = (new_flags & EF_FRV_FPR_MASK); |
6399 | 0 | old_partial = (old_flags & EF_FRV_FPR_MASK); |
6400 | 0 | if (new_partial == old_partial) |
6401 | 0 | ; |
6402 | | |
6403 | 0 | else if (new_partial == 0) |
6404 | 0 | ; |
6405 | | |
6406 | 0 | else if (old_partial == 0) |
6407 | 0 | old_flags |= new_partial; |
6408 | | |
6409 | 0 | else |
6410 | 0 | { |
6411 | 0 | switch (new_partial) |
6412 | 0 | { |
6413 | 0 | default: strcat (new_opt, " -mfpr-?"); break; |
6414 | 0 | case EF_FRV_FPR_32: strcat (new_opt, " -mfpr-32"); break; |
6415 | 0 | case EF_FRV_FPR_64: strcat (new_opt, " -mfpr-64"); break; |
6416 | 0 | case EF_FRV_FPR_NONE: strcat (new_opt, " -msoft-float"); break; |
6417 | 0 | } |
6418 | | |
6419 | 0 | switch (old_partial) |
6420 | 0 | { |
6421 | 0 | default: strcat (old_opt, " -mfpr-?"); break; |
6422 | 0 | case EF_FRV_FPR_32: strcat (old_opt, " -mfpr-32"); break; |
6423 | 0 | case EF_FRV_FPR_64: strcat (old_opt, " -mfpr-64"); break; |
6424 | 0 | case EF_FRV_FPR_NONE: strcat (old_opt, " -msoft-float"); break; |
6425 | 0 | } |
6426 | 0 | } |
6427 | | |
6428 | | /* Warn if different dword support was used. Note, 0 means nothing is |
6429 | | said about the dword support. */ |
6430 | 0 | new_partial = (new_flags & EF_FRV_DWORD_MASK); |
6431 | 0 | old_partial = (old_flags & EF_FRV_DWORD_MASK); |
6432 | 0 | if (new_partial == old_partial) |
6433 | 0 | ; |
6434 | | |
6435 | 0 | else if (new_partial == 0) |
6436 | 0 | ; |
6437 | | |
6438 | 0 | else if (old_partial == 0) |
6439 | 0 | old_flags |= new_partial; |
6440 | | |
6441 | 0 | else |
6442 | 0 | { |
6443 | 0 | switch (new_partial) |
6444 | 0 | { |
6445 | 0 | default: strcat (new_opt, " -mdword-?"); break; |
6446 | 0 | case EF_FRV_DWORD_YES: strcat (new_opt, " -mdword"); break; |
6447 | 0 | case EF_FRV_DWORD_NO: strcat (new_opt, " -mno-dword"); break; |
6448 | 0 | } |
6449 | | |
6450 | 0 | switch (old_partial) |
6451 | 0 | { |
6452 | 0 | default: strcat (old_opt, " -mdword-?"); break; |
6453 | 0 | case EF_FRV_DWORD_YES: strcat (old_opt, " -mdword"); break; |
6454 | 0 | case EF_FRV_DWORD_NO: strcat (old_opt, " -mno-dword"); break; |
6455 | 0 | } |
6456 | 0 | } |
6457 | | |
6458 | | /* Or in flags that accumulate (ie, if one module uses it, mark that the |
6459 | | feature is used. */ |
6460 | 0 | old_flags |= new_flags & (EF_FRV_DOUBLE |
6461 | 0 | | EF_FRV_MEDIA |
6462 | 0 | | EF_FRV_MULADD |
6463 | 0 | | EF_FRV_NON_PIC_RELOCS); |
6464 | | |
6465 | | /* If any module was compiled without -G0, clear the G0 bit. */ |
6466 | 0 | old_flags = ((old_flags & ~ EF_FRV_G0) |
6467 | 0 | | (old_flags & new_flags & EF_FRV_G0)); |
6468 | | |
6469 | | /* If any module was compiled without -mnopack, clear the mnopack bit. */ |
6470 | 0 | old_flags = ((old_flags & ~ EF_FRV_NOPACK) |
6471 | 0 | | (old_flags & new_flags & EF_FRV_NOPACK)); |
6472 | | |
6473 | | /* We don't have to do anything if the pic flags are the same, or the new |
6474 | | module(s) were compiled with -mlibrary-pic. */ |
6475 | 0 | new_partial = (new_flags & EF_FRV_PIC_FLAGS); |
6476 | 0 | old_partial = (old_flags & EF_FRV_PIC_FLAGS); |
6477 | 0 | if ((new_partial == old_partial) || ((new_partial & EF_FRV_LIBPIC) != 0)) |
6478 | 0 | ; |
6479 | | |
6480 | | /* If the old module(s) were compiled with -mlibrary-pic, copy in the pic |
6481 | | flags if any from the new module. */ |
6482 | 0 | else if ((old_partial & EF_FRV_LIBPIC) != 0) |
6483 | 0 | old_flags = (old_flags & ~ EF_FRV_PIC_FLAGS) | new_partial; |
6484 | | |
6485 | | /* If we have mixtures of -fpic and -fPIC, or in both bits. */ |
6486 | 0 | else if (new_partial != 0 && old_partial != 0) |
6487 | 0 | old_flags |= new_partial; |
6488 | | |
6489 | | /* One module was compiled for pic and the other was not, see if we have |
6490 | | had any relocations that are not pic-safe. */ |
6491 | 0 | else |
6492 | 0 | { |
6493 | 0 | if ((old_flags & EF_FRV_NON_PIC_RELOCS) == 0) |
6494 | 0 | old_flags |= new_partial; |
6495 | 0 | else |
6496 | 0 | { |
6497 | 0 | old_flags &= ~ EF_FRV_PIC_FLAGS; |
6498 | 0 | #ifndef FRV_NO_PIC_ERROR |
6499 | 0 | error = true; |
6500 | 0 | _bfd_error_handler |
6501 | | /* xgettext:c-format */ |
6502 | 0 | (_("%pB: compiled with %s and linked with modules" |
6503 | 0 | " that use non-pic relocations"), |
6504 | 0 | ibfd, (new_flags & EF_FRV_BIGPIC) ? "-fPIC" : "-fpic"); |
6505 | 0 | #endif |
6506 | 0 | } |
6507 | 0 | } |
6508 | | |
6509 | | /* Warn if different cpu is used (allow a specific cpu to override |
6510 | | the generic cpu). */ |
6511 | 0 | new_partial = (new_flags & EF_FRV_CPU_MASK); |
6512 | 0 | old_partial = (old_flags & EF_FRV_CPU_MASK); |
6513 | 0 | if (frv_elf_arch_extension_p (new_partial, old_partial)) |
6514 | 0 | ; |
6515 | | |
6516 | 0 | else if (frv_elf_arch_extension_p (old_partial, new_partial)) |
6517 | 0 | old_flags = (old_flags & ~EF_FRV_CPU_MASK) | new_partial; |
6518 | | |
6519 | 0 | else |
6520 | 0 | { |
6521 | 0 | switch (new_partial) |
6522 | 0 | { |
6523 | 0 | default: strcat (new_opt, " -mcpu=?"); break; |
6524 | 0 | case EF_FRV_CPU_GENERIC: strcat (new_opt, " -mcpu=frv"); break; |
6525 | 0 | case EF_FRV_CPU_SIMPLE: strcat (new_opt, " -mcpu=simple"); break; |
6526 | 0 | case EF_FRV_CPU_FR550: strcat (new_opt, " -mcpu=fr550"); break; |
6527 | 0 | case EF_FRV_CPU_FR500: strcat (new_opt, " -mcpu=fr500"); break; |
6528 | 0 | case EF_FRV_CPU_FR450: strcat (new_opt, " -mcpu=fr450"); break; |
6529 | 0 | case EF_FRV_CPU_FR405: strcat (new_opt, " -mcpu=fr405"); break; |
6530 | 0 | case EF_FRV_CPU_FR400: strcat (new_opt, " -mcpu=fr400"); break; |
6531 | 0 | case EF_FRV_CPU_FR300: strcat (new_opt, " -mcpu=fr300"); break; |
6532 | 0 | case EF_FRV_CPU_TOMCAT: strcat (new_opt, " -mcpu=tomcat"); break; |
6533 | 0 | } |
6534 | | |
6535 | 0 | switch (old_partial) |
6536 | 0 | { |
6537 | 0 | default: strcat (old_opt, " -mcpu=?"); break; |
6538 | 0 | case EF_FRV_CPU_GENERIC: strcat (old_opt, " -mcpu=frv"); break; |
6539 | 0 | case EF_FRV_CPU_SIMPLE: strcat (old_opt, " -mcpu=simple"); break; |
6540 | 0 | case EF_FRV_CPU_FR550: strcat (old_opt, " -mcpu=fr550"); break; |
6541 | 0 | case EF_FRV_CPU_FR500: strcat (old_opt, " -mcpu=fr500"); break; |
6542 | 0 | case EF_FRV_CPU_FR450: strcat (old_opt, " -mcpu=fr450"); break; |
6543 | 0 | case EF_FRV_CPU_FR405: strcat (old_opt, " -mcpu=fr405"); break; |
6544 | 0 | case EF_FRV_CPU_FR400: strcat (old_opt, " -mcpu=fr400"); break; |
6545 | 0 | case EF_FRV_CPU_FR300: strcat (old_opt, " -mcpu=fr300"); break; |
6546 | 0 | case EF_FRV_CPU_TOMCAT: strcat (old_opt, " -mcpu=tomcat"); break; |
6547 | 0 | } |
6548 | 0 | } |
6549 | | |
6550 | | /* Print out any mismatches from above. */ |
6551 | 0 | if (new_opt[0]) |
6552 | 0 | { |
6553 | 0 | error = true; |
6554 | 0 | _bfd_error_handler |
6555 | | /* xgettext:c-format */ |
6556 | 0 | (_("%pB: compiled with %s and linked with modules compiled with %s"), |
6557 | 0 | ibfd, new_opt, old_opt); |
6558 | 0 | } |
6559 | | |
6560 | | /* Warn about any other mismatches */ |
6561 | 0 | new_partial = (new_flags & ~ EF_FRV_ALL_FLAGS); |
6562 | 0 | old_partial = (old_flags & ~ EF_FRV_ALL_FLAGS); |
6563 | 0 | if (new_partial != old_partial) |
6564 | 0 | { |
6565 | 0 | old_flags |= new_partial; |
6566 | 0 | error = true; |
6567 | 0 | _bfd_error_handler |
6568 | | /* xgettext:c-format */ |
6569 | 0 | (_("%pB: uses different unknown e_flags (%#x) fields" |
6570 | 0 | " than previous modules (%#x)"), |
6571 | 0 | ibfd, new_partial, old_partial); |
6572 | 0 | } |
6573 | 0 | } |
6574 | | |
6575 | | /* If the cpu is -mcpu=simple, then set the -mnopack bit. */ |
6576 | 0 | if ((old_flags & EF_FRV_CPU_MASK) == EF_FRV_CPU_SIMPLE) |
6577 | 0 | old_flags |= EF_FRV_NOPACK; |
6578 | | |
6579 | | /* Update the old flags now with changes made above. */ |
6580 | 0 | old_partial = elf_elfheader (obfd)->e_flags & EF_FRV_CPU_MASK; |
6581 | 0 | elf_elfheader (obfd)->e_flags = old_flags; |
6582 | 0 | if (old_partial != (old_flags & EF_FRV_CPU_MASK)) |
6583 | 0 | bfd_default_set_arch_mach (obfd, bfd_arch_frv, elf32_frv_machine (obfd)); |
6584 | |
|
6585 | 0 | if (((new_flags & EF_FRV_FDPIC) == 0) |
6586 | 0 | != (! IS_FDPIC (ibfd))) |
6587 | 0 | { |
6588 | 0 | error = true; |
6589 | 0 | if (IS_FDPIC (obfd)) |
6590 | 0 | _bfd_error_handler |
6591 | 0 | (_("%pB: cannot link non-fdpic object file into fdpic executable"), |
6592 | 0 | ibfd); |
6593 | 0 | else |
6594 | 0 | _bfd_error_handler |
6595 | 0 | (_("%pB: cannot link fdpic object file into non-fdpic executable"), |
6596 | 0 | ibfd); |
6597 | 0 | } |
6598 | |
|
6599 | 0 | if (error) |
6600 | 0 | bfd_set_error (bfd_error_bad_value); |
6601 | |
|
6602 | 0 | return !error; |
6603 | 0 | } |
6604 | | |
6605 | | |
6606 | | static bool |
6607 | | frv_elf_print_private_bfd_data (bfd *abfd, void * ptr) |
6608 | 8 | { |
6609 | 8 | FILE *file = (FILE *) ptr; |
6610 | 8 | flagword flags; |
6611 | | |
6612 | 8 | BFD_ASSERT (abfd != NULL && ptr != NULL); |
6613 | | |
6614 | | /* Print normal ELF private data. */ |
6615 | 8 | _bfd_elf_print_private_bfd_data (abfd, ptr); |
6616 | | |
6617 | 8 | flags = elf_elfheader (abfd)->e_flags; |
6618 | 8 | fprintf (file, _("private flags = 0x%lx:"), (unsigned long) flags); |
6619 | | |
6620 | 8 | switch (flags & EF_FRV_CPU_MASK) |
6621 | 8 | { |
6622 | 1 | default: break; |
6623 | 1 | case EF_FRV_CPU_SIMPLE: fprintf (file, " -mcpu=simple"); break; |
6624 | 1 | case EF_FRV_CPU_FR550: fprintf (file, " -mcpu=fr550"); break; |
6625 | 1 | case EF_FRV_CPU_FR500: fprintf (file, " -mcpu=fr500"); break; |
6626 | 0 | case EF_FRV_CPU_FR450: fprintf (file, " -mcpu=fr450"); break; |
6627 | 1 | case EF_FRV_CPU_FR405: fprintf (file, " -mcpu=fr405"); break; |
6628 | 1 | case EF_FRV_CPU_FR400: fprintf (file, " -mcpu=fr400"); break; |
6629 | 1 | case EF_FRV_CPU_FR300: fprintf (file, " -mcpu=fr300"); break; |
6630 | 1 | case EF_FRV_CPU_TOMCAT: fprintf (file, " -mcpu=tomcat"); break; |
6631 | 8 | } |
6632 | | |
6633 | 8 | switch (flags & EF_FRV_GPR_MASK) |
6634 | 8 | { |
6635 | 4 | default: break; |
6636 | 4 | case EF_FRV_GPR_32: fprintf (file, " -mgpr-32"); break; |
6637 | 1 | case EF_FRV_GPR_64: fprintf (file, " -mgpr-64"); break; |
6638 | 8 | } |
6639 | | |
6640 | 8 | switch (flags & EF_FRV_FPR_MASK) |
6641 | 8 | { |
6642 | 2 | default: break; |
6643 | 3 | case EF_FRV_FPR_32: fprintf (file, " -mfpr-32"); break; |
6644 | 1 | case EF_FRV_FPR_64: fprintf (file, " -mfpr-64"); break; |
6645 | 2 | case EF_FRV_FPR_NONE: fprintf (file, " -msoft-float"); break; |
6646 | 8 | } |
6647 | | |
6648 | 8 | switch (flags & EF_FRV_DWORD_MASK) |
6649 | 8 | { |
6650 | 4 | default: break; |
6651 | 4 | case EF_FRV_DWORD_YES: fprintf (file, " -mdword"); break; |
6652 | 2 | case EF_FRV_DWORD_NO: fprintf (file, " -mno-dword"); break; |
6653 | 8 | } |
6654 | | |
6655 | 8 | if (flags & EF_FRV_DOUBLE) |
6656 | 3 | fprintf (file, " -mdouble"); |
6657 | | |
6658 | 8 | if (flags & EF_FRV_MEDIA) |
6659 | 3 | fprintf (file, " -mmedia"); |
6660 | | |
6661 | 8 | if (flags & EF_FRV_MULADD) |
6662 | 2 | fprintf (file, " -mmuladd"); |
6663 | | |
6664 | 8 | if (flags & EF_FRV_PIC) |
6665 | 3 | fprintf (file, " -fpic"); |
6666 | | |
6667 | 8 | if (flags & EF_FRV_BIGPIC) |
6668 | 2 | fprintf (file, " -fPIC"); |
6669 | | |
6670 | 8 | if (flags & EF_FRV_LIBPIC) |
6671 | 2 | fprintf (file, " -mlibrary-pic"); |
6672 | | |
6673 | 8 | if (flags & EF_FRV_FDPIC) |
6674 | 1 | fprintf (file, " -mfdpic"); |
6675 | | |
6676 | 8 | if (flags & EF_FRV_NON_PIC_RELOCS) |
6677 | 3 | fprintf (file, " non-pic relocations"); |
6678 | | |
6679 | 8 | if (flags & EF_FRV_G0) |
6680 | 2 | fprintf (file, " -G0"); |
6681 | | |
6682 | 8 | fputc ('\n', file); |
6683 | 8 | return true; |
6684 | 8 | } |
6685 | | |
6686 | | |
6687 | | /* Support for core dump NOTE sections. */ |
6688 | | |
6689 | | static bool |
6690 | | elf32_frv_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
6691 | 0 | { |
6692 | 0 | int offset; |
6693 | 0 | unsigned int raw_size; |
6694 | |
|
6695 | 0 | switch (note->descsz) |
6696 | 0 | { |
6697 | 0 | default: |
6698 | 0 | return false; |
6699 | | |
6700 | | /* The Linux/FRV elf_prstatus struct is 268 bytes long. The other |
6701 | | hardcoded offsets and sizes listed below (and contained within |
6702 | | this lexical block) refer to fields in the target's elf_prstatus |
6703 | | struct. */ |
6704 | 0 | case 268: |
6705 | | /* `pr_cursig' is at offset 12. */ |
6706 | 0 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
6707 | | |
6708 | | /* `pr_pid' is at offset 24. */ |
6709 | 0 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); |
6710 | | |
6711 | | /* `pr_reg' is at offset 72. */ |
6712 | 0 | offset = 72; |
6713 | | |
6714 | | /* Most grok_prstatus implementations set `raw_size' to the size |
6715 | | of the pr_reg field. For Linux/FRV, we set `raw_size' to be |
6716 | | the size of `pr_reg' plus the size of `pr_exec_fdpic_loadmap' |
6717 | | and `pr_interp_fdpic_loadmap', both of which (by design) |
6718 | | immediately follow `pr_reg'. This will allow these fields to |
6719 | | be viewed by GDB as registers. |
6720 | | |
6721 | | `pr_reg' is 184 bytes long. `pr_exec_fdpic_loadmap' and |
6722 | | `pr_interp_fdpic_loadmap' are 4 bytes each. */ |
6723 | 0 | raw_size = 184 + 4 + 4; |
6724 | |
|
6725 | 0 | break; |
6726 | 0 | } |
6727 | | |
6728 | | /* Make a ".reg/999" section. */ |
6729 | 0 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", raw_size, |
6730 | 0 | note->descpos + offset); |
6731 | 0 | } |
6732 | | |
6733 | | static bool |
6734 | | elf32_frv_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
6735 | 0 | { |
6736 | 0 | switch (note->descsz) |
6737 | 0 | { |
6738 | 0 | default: |
6739 | 0 | return false; |
6740 | | |
6741 | | /* The Linux/FRV elf_prpsinfo struct is 124 bytes long. */ |
6742 | 0 | case 124: |
6743 | | |
6744 | | /* `pr_fname' is found at offset 28 and is 16 bytes long. */ |
6745 | 0 | elf_tdata (abfd)->core->program |
6746 | 0 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); |
6747 | | |
6748 | | /* `pr_psargs' is found at offset 44 and is 80 bytes long. */ |
6749 | 0 | elf_tdata (abfd)->core->command |
6750 | 0 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); |
6751 | 0 | } |
6752 | | |
6753 | | /* Note that for some reason, a spurious space is tacked |
6754 | | onto the end of the args in some (at least one anyway) |
6755 | | implementations, so strip it off if it exists. */ |
6756 | | |
6757 | 0 | { |
6758 | 0 | char *command = elf_tdata (abfd)->core->command; |
6759 | 0 | int n = strlen (command); |
6760 | |
|
6761 | 0 | if (0 < n && command[n - 1] == ' ') |
6762 | 0 | command[n - 1] = '\0'; |
6763 | 0 | } |
6764 | |
|
6765 | 0 | return true; |
6766 | 0 | } |
6767 | | #define ELF_ARCH bfd_arch_frv |
6768 | | #define ELF_MACHINE_CODE EM_CYGNUS_FRV |
6769 | | #define ELF_MAXPAGESIZE 0x1000 |
6770 | | |
6771 | | #define TARGET_BIG_SYM frv_elf32_vec |
6772 | | #define TARGET_BIG_NAME "elf32-frv" |
6773 | | |
6774 | | #define elf_info_to_howto frv_info_to_howto_rela |
6775 | | #define elf_backend_relocate_section elf32_frv_relocate_section |
6776 | | #define elf_backend_gc_mark_hook elf32_frv_gc_mark_hook |
6777 | | #define elf_backend_check_relocs elf32_frv_check_relocs |
6778 | | #define elf_backend_object_p elf32_frv_object_p |
6779 | | #define elf_backend_add_symbol_hook elf32_frv_add_symbol_hook |
6780 | | |
6781 | | #define elf_backend_stack_align 8 |
6782 | | #define elf_backend_can_gc_sections 1 |
6783 | | #define elf_backend_rela_normal 1 |
6784 | | |
6785 | | #define bfd_elf32_bfd_reloc_type_lookup frv_reloc_type_lookup |
6786 | | #define bfd_elf32_bfd_reloc_name_lookup frv_reloc_name_lookup |
6787 | | #define bfd_elf32_bfd_set_private_flags frv_elf_set_private_flags |
6788 | | #define bfd_elf32_bfd_merge_private_bfd_data frv_elf_merge_private_bfd_data |
6789 | | #define bfd_elf32_bfd_print_private_bfd_data frv_elf_print_private_bfd_data |
6790 | | |
6791 | | #define elf_backend_want_got_sym 1 |
6792 | | #define elf_backend_got_header_size 0 |
6793 | | #define elf_backend_want_got_plt 0 |
6794 | | #define elf_backend_plt_readonly 1 |
6795 | | #define elf_backend_want_plt_sym 0 |
6796 | | #define elf_backend_plt_header_size 0 |
6797 | | |
6798 | | #define elf_backend_finish_dynamic_sections \ |
6799 | | elf32_frv_finish_dynamic_sections |
6800 | | |
6801 | | #define elf_backend_grok_prstatus elf32_frv_grok_prstatus |
6802 | | #define elf_backend_grok_psinfo elf32_frv_grok_psinfo |
6803 | | |
6804 | | #define elf_backend_linux_prpsinfo32_ugid16 true |
6805 | | |
6806 | | #include "elf32-target.h" |
6807 | | |
6808 | | #undef ELF_TARGET_ID |
6809 | | #define ELF_TARGET_ID FRV_ELF_DATA |
6810 | | #undef ELF_MAXPAGESIZE |
6811 | | #define ELF_MAXPAGESIZE 0x4000 |
6812 | | |
6813 | | #undef TARGET_BIG_SYM |
6814 | | #define TARGET_BIG_SYM frv_elf32_fdpic_vec |
6815 | | #undef TARGET_BIG_NAME |
6816 | | #define TARGET_BIG_NAME "elf32-frvfdpic" |
6817 | | #undef elf32_bed |
6818 | | #define elf32_bed elf32_frvfdpic_bed |
6819 | | |
6820 | | #undef elf_info_to_howto_rel |
6821 | | #define elf_info_to_howto_rel frvfdpic_info_to_howto_rel |
6822 | | |
6823 | | #undef bfd_elf32_bfd_link_hash_table_create |
6824 | | #define bfd_elf32_bfd_link_hash_table_create \ |
6825 | | frvfdpic_elf_link_hash_table_create |
6826 | | #undef elf_backend_early_size_sections |
6827 | | #define elf_backend_early_size_sections \ |
6828 | | elf32_frvfdpic_early_size_sections |
6829 | | |
6830 | | #undef elf_backend_create_dynamic_sections |
6831 | | #define elf_backend_create_dynamic_sections \ |
6832 | | elf32_frvfdpic_create_dynamic_sections |
6833 | | #undef elf_backend_adjust_dynamic_symbol |
6834 | | #define elf_backend_adjust_dynamic_symbol \ |
6835 | | elf32_frvfdpic_adjust_dynamic_symbol |
6836 | | #undef elf_backend_late_size_sections |
6837 | | #define elf_backend_late_size_sections \ |
6838 | | elf32_frvfdpic_late_size_sections |
6839 | | #undef bfd_elf32_bfd_relax_section |
6840 | | #define bfd_elf32_bfd_relax_section \ |
6841 | | elf32_frvfdpic_relax_section |
6842 | | #undef elf_backend_finish_dynamic_symbol |
6843 | | #define elf_backend_finish_dynamic_symbol \ |
6844 | | elf32_frvfdpic_finish_dynamic_symbol |
6845 | | #undef elf_backend_finish_dynamic_sections |
6846 | | #define elf_backend_finish_dynamic_sections \ |
6847 | | elf32_frvfdpic_finish_dynamic_sections |
6848 | | |
6849 | | #undef elf_backend_discard_info |
6850 | | #define elf_backend_discard_info \ |
6851 | | frvfdpic_elf_discard_info |
6852 | | #undef elf_backend_can_make_relative_eh_frame |
6853 | | #define elf_backend_can_make_relative_eh_frame \ |
6854 | | frvfdpic_elf_use_relative_eh_frame |
6855 | | #undef elf_backend_can_make_lsda_relative_eh_frame |
6856 | | #define elf_backend_can_make_lsda_relative_eh_frame \ |
6857 | | frvfdpic_elf_use_relative_eh_frame |
6858 | | #undef elf_backend_encode_eh_address |
6859 | | #define elf_backend_encode_eh_address \ |
6860 | | frvfdpic_elf_encode_eh_address |
6861 | | |
6862 | | #undef elf_backend_may_use_rel_p |
6863 | | #define elf_backend_may_use_rel_p 1 |
6864 | | #undef elf_backend_may_use_rela_p |
6865 | | #define elf_backend_may_use_rela_p 1 |
6866 | | /* We use REL for dynamic relocations only. */ |
6867 | | #undef elf_backend_default_use_rela_p |
6868 | | #define elf_backend_default_use_rela_p 1 |
6869 | | |
6870 | | #undef elf_backend_omit_section_dynsym |
6871 | | #define elf_backend_omit_section_dynsym _frvfdpic_link_omit_section_dynsym |
6872 | | |
6873 | | #include "elf32-target.h" |