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Implement tp_richcompare for gdb.Block
[binutils-gdb.git] / bfd / elf32-tilepro.c
blob0c187c07832a8416354e38ca4ba297d24e5ba36f
1 /* TILEPro-specific support for 32-bit ELF.
2 Copyright (C) 2011-2024 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/tilepro.h"
26 #include "opcode/tilepro.h"
27 #include "libiberty.h"
28 #include "elf32-tilepro.h"
29
30 #define TILEPRO_BYTES_PER_WORD 4
31
32 static reloc_howto_type tilepro_elf_howto_table [] =
33 {
34 /* This reloc does nothing. */
35 HOWTO (R_TILEPRO_NONE, /* type */
36 0, /* rightshift */
37 0, /* size */
38 0, /* bitsize */
39 false, /* pc_relative */
40 0, /* bitpos */
41 complain_overflow_dont, /* complain_on_overflow */
42 bfd_elf_generic_reloc, /* special_function */
43 "R_TILEPRO_NONE", /* name */
44 false, /* partial_inplace */
45 0, /* src_mask */
46 0, /* dst_mask */
47 false), /* pcrel_offset */
48
49 /* A 32 bit absolute relocation. */
50 HOWTO (R_TILEPRO_32, /* type */
51 0, /* rightshift */
52 4, /* size */
53 32, /* bitsize */
54 false, /* pc_relative */
55 0, /* bitpos */
56 complain_overflow_dont, /* complain_on_overflow */
57 bfd_elf_generic_reloc, /* special_function */
58 "R_TILEPRO_32", /* name */
59 false, /* partial_inplace */
60 0, /* src_mask */
61 0xffffffff, /* dst_mask */
62 false), /* pcrel_offset */
63
64 /* A 16 bit absolute relocation. */
65 HOWTO (R_TILEPRO_16, /* type */
66 0, /* rightshift */
67 2, /* size */
68 16, /* bitsize */
69 false, /* pc_relative */
70 0, /* bitpos */
71 complain_overflow_bitfield, /* complain_on_overflow */
72 bfd_elf_generic_reloc, /* special_function */
73 "R_TILEPRO_16", /* name */
74 false, /* partial_inplace */
75 0, /* src_mask */
76 0xffff, /* dst_mask */
77 false), /* pcrel_offset */
78
79 /* An 8 bit absolute relocation. */
80 HOWTO (R_TILEPRO_8, /* type */
81 0, /* rightshift */
82 1, /* size */
83 8, /* bitsize */
84 false, /* pc_relative */
85 0, /* bitpos */
86 complain_overflow_unsigned, /* complain_on_overflow */
87 bfd_elf_generic_reloc, /* special_function */
88 "R_TILEPRO_8", /* name */
89 false, /* partial_inplace */
90 0, /* src_mask */
91 0xff, /* dst_mask */
92 false), /* pcrel_offset */
93
94 /* A 32 bit pc-relative relocation. */
95 HOWTO (R_TILEPRO_32_PCREL,/* type */
96 0, /* rightshift */
97 4, /* size */
98 32, /* bitsize */
99 true, /* pc_relative */
100 0, /* bitpos */
101 complain_overflow_dont, /* complain_on_overflow */
102 bfd_elf_generic_reloc, /* special_function */
103 "R_TILEPRO_32_PCREL", /* name */
104 false, /* partial_inplace */
105 0, /* src_mask */
106 0xffffffff, /* dst_mask */
107 true), /* pcrel_offset */
108
109 /* A 16 bit pc-relative relocation. */
110 HOWTO (R_TILEPRO_16_PCREL,/* type */
111 0, /* rightshift */
112 2, /* size */
113 16, /* bitsize */
114 true, /* pc_relative */
115 0, /* bitpos */
116 complain_overflow_signed, /* complain_on_overflow */
117 bfd_elf_generic_reloc, /* special_function */
118 "R_TILEPRO_16_PCREL", /* name */
119 false, /* partial_inplace */
120 0, /* src_mask */
121 0xffff, /* dst_mask */
122 true), /* pcrel_offset */
123
124 /* An 8 bit pc-relative relocation. */
125 HOWTO (R_TILEPRO_8_PCREL, /* type */
126 0, /* rightshift */
127 1, /* size */
128 8, /* bitsize */
129 true, /* pc_relative */
130 0, /* bitpos */
131 complain_overflow_signed, /* complain_on_overflow */
132 bfd_elf_generic_reloc, /* special_function */
133 "R_TILEPRO_8_PCREL",/* name */
134 false, /* partial_inplace */
135 0, /* src_mask */
136 0xff, /* dst_mask */
137 true), /* pcrel_offset */
138
139 /* A 16 bit relocation without overflow. */
140 HOWTO (R_TILEPRO_LO16, /* type */
141 0, /* rightshift */
142 2, /* size */
143 16, /* bitsize */
144 false, /* pc_relative */
145 0, /* bitpos */
146 complain_overflow_dont,/* complain_on_overflow */
147 bfd_elf_generic_reloc, /* special_function */
148 "R_TILEPRO_LO16", /* name */
149 false, /* partial_inplace */
150 0, /* src_mask */
151 0xffff, /* dst_mask */
152 false), /* pcrel_offset */
153
154 /* The high order 16 bits of an address. */
155 HOWTO (R_TILEPRO_HI16, /* type */
156 16, /* rightshift */
157 2, /* size */
158 16, /* bitsize */
159 false, /* pc_relative */
160 0, /* bitpos */
161 complain_overflow_dont, /* complain_on_overflow */
162 bfd_elf_generic_reloc, /* special_function */
163 "R_TILEPRO_HI16", /* name */
164 false, /* partial_inplace */
165 0, /* src_mask */
166 0xffff, /* dst_mask */
167 false), /* pcrel_offset */
168
169 /* The high order 16 bits of an address, plus 1 if the contents of
170 the low 16 bits, treated as a signed number, is negative. */
171 HOWTO (R_TILEPRO_HA16, /* type */
172 16, /* rightshift */
173 2, /* size */
174 16, /* bitsize */
175 false, /* pc_relative */
176 0, /* bitpos */
177 complain_overflow_dont, /* complain_on_overflow */
178 bfd_elf_generic_reloc, /* special_function */
179 "R_TILEPRO_HA16", /* name */
180 false, /* partial_inplace */
181 0, /* src_mask */
182 0xffff, /* dst_mask */
183 false), /* pcrel_offset */
184
185 HOWTO (R_TILEPRO_COPY, /* type */
186 0, /* rightshift */
187 0, /* size */
188 0, /* bitsize */
189 false, /* pc_relative */
190 0, /* bitpos */
191 complain_overflow_dont, /* complain_on_overflow */
192 bfd_elf_generic_reloc, /* special_function */
193 "R_TILEPRO_COPY", /* name */
194 false, /* partial_inplace */
195 0, /* src_mask */
196 0, /* dst_mask */
197 true), /* pcrel_offset */
198
199 HOWTO (R_TILEPRO_GLOB_DAT, /* type */
200 0, /* rightshift */
201 0, /* size */
202 0, /* bitsize */
203 false, /* pc_relative */
204 0, /* bitpos */
205 complain_overflow_dont, /* complain_on_overflow */
206 bfd_elf_generic_reloc, /* special_function */
207 "R_TILEPRO_GLOB_DAT", /* name */
208 false, /* partial_inplace */
209 0, /* src_mask */
210 0, /* dst_mask */
211 true), /* pcrel_offset */
212
213 HOWTO (R_TILEPRO_JMP_SLOT, /* type */
214 0, /* rightshift */
215 0, /* size */
216 0, /* bitsize */
217 false, /* pc_relative */
218 0, /* bitpos */
219 complain_overflow_dont, /* complain_on_overflow */
220 bfd_elf_generic_reloc, /* special_function */
221 "R_TILEPRO_JMP_SLOT", /* name */
222 false, /* partial_inplace */
223 0, /* src_mask */
224 0, /* dst_mask */
225 true), /* pcrel_offset */
226
227 HOWTO (R_TILEPRO_RELATIVE, /* type */
228 0, /* rightshift */
229 0, /* size */
230 0, /* bitsize */
231 false, /* pc_relative */
232 0, /* bitpos */
233 complain_overflow_dont, /* complain_on_overflow */
234 bfd_elf_generic_reloc, /* special_function */
235 "R_TILEPRO_RELATIVE", /* name */
236 false, /* partial_inplace */
237 0, /* src_mask */
238 0, /* dst_mask */
239 true), /* pcrel_offset */
240
241 HOWTO (R_TILEPRO_BROFF_X1, /* type */
242 TILEPRO_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
243 4, /* size */
244 17, /* bitsize */
245 true, /* pc_relative */
246 0, /* bitpos */
247 complain_overflow_signed, /* complain_on_overflow */
248 bfd_elf_generic_reloc, /* special_function */
249 "R_TILEPRO_BROFF_X1", /* name */
250 false, /* partial_inplace */
251 0, /* src_mask */
252 -1, /* dst_mask */
253 true), /* pcrel_offset */
254
255 HOWTO (R_TILEPRO_JOFFLONG_X1, /* type */
256 TILEPRO_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
257 4, /* size */
258 29, /* bitsize */
259 true, /* pc_relative */
260 0, /* bitpos */
261 complain_overflow_signed,/* complain_on_overflow */
262 bfd_elf_generic_reloc, /* special_function */
263 "R_TILEPRO_JOFFLONG_X1", /* name */
264 false, /* partial_inplace */
265 0, /* src_mask */
266 -1, /* dst_mask */
267 true), /* pcrel_offset */
268
269 HOWTO (R_TILEPRO_JOFFLONG_X1_PLT, /* type */
270 TILEPRO_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
271 4, /* size */
272 29, /* bitsize */
273 true, /* pc_relative */
274 0, /* bitpos */
275 complain_overflow_signed,/* complain_on_overflow */
276 bfd_elf_generic_reloc, /* special_function */
277 "R_TILEPRO_JOFFLONG_X1_PLT", /* name */
278 false, /* partial_inplace */
279 0, /* src_mask */
280 -1, /* dst_mask */
281 true), /* pcrel_offset */
282
283 #define TILEPRO_IMM_HOWTO(name, size, bitsize) \
284 HOWTO (name, 0, size, bitsize, false, 0, \
285 complain_overflow_signed, bfd_elf_generic_reloc, \
286 #name, false, 0, -1, false)
287
288 #define TILEPRO_UIMM_HOWTO(name, size, bitsize) \
289 HOWTO (name, 0, size, bitsize, false, 0, \
290 complain_overflow_unsigned, bfd_elf_generic_reloc, \
291 #name, false, 0, -1, false)
292
293 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_X0, 1, 8),
294 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_Y0, 1, 8),
295 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_X1, 1, 8),
296 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_Y1, 1, 8),
297 TILEPRO_UIMM_HOWTO(R_TILEPRO_MT_IMM15_X1, 2, 15),
298 TILEPRO_UIMM_HOWTO(R_TILEPRO_MF_IMM15_X1, 2, 15),
299 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM16_X0, 2, 16),
300 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM16_X1, 2, 16),
301
302 #define TILEPRO_IMM16_HOWTO(name, rshift) \
303 HOWTO (name, rshift, 2, 16, false, 0, \
304 complain_overflow_dont, bfd_elf_generic_reloc, \
305 #name, false, 0, 0xffff, false)
306
307 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_LO, 0),
308 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_LO, 0),
309 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_HI, 16),
310 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_HI, 16),
311 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_HA, 16),
312 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_HA, 16),
313
314 /* PC-relative offsets. */
315
316 HOWTO (R_TILEPRO_IMM16_X0_PCREL, /* type */
317 0, /* rightshift */
318 2, /* size */
319 16, /* bitsize */
320 true, /* pc_relative */
321 0, /* bitpos */
322 complain_overflow_signed, /* complain_on_overflow */
323 bfd_elf_generic_reloc, /* special_function */
324 "R_TILEPRO_IMM16_X0_PCREL",/* name */
325 false, /* partial_inplace */
326 0, /* src_mask */
327 -1, /* dst_mask */
328 true), /* pcrel_offset */
329
330 HOWTO (R_TILEPRO_IMM16_X1_PCREL, /* type */
331 0, /* rightshift */
332 2, /* size */
333 16, /* bitsize */
334 true, /* pc_relative */
335 0, /* bitpos */
336 complain_overflow_signed, /* complain_on_overflow */
337 bfd_elf_generic_reloc, /* special_function */
338 "R_TILEPRO_IMM16_X1_PCREL",/* name */
339 false, /* partial_inplace */
340 0, /* src_mask */
341 -1, /* dst_mask */
342 true), /* pcrel_offset */
343
344 #define TILEPRO_IMM16_HOWTO_PCREL(name, rshift) \
345 HOWTO (name, rshift, 2, 16, true, 0, \
346 complain_overflow_dont, bfd_elf_generic_reloc, \
347 #name, false, 0, 0xffff, true)
348
349 TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X0_LO_PCREL, 0),
350 TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X1_LO_PCREL, 0),
351 TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X0_HI_PCREL, 16),
352 TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X1_HI_PCREL, 16),
353 TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X0_HA_PCREL, 16),
354 TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X1_HA_PCREL, 16),
355
356 /* Byte offset into GOT for a particular symbol. */
357 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM16_X0_GOT, 2, 16),
358 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM16_X1_GOT, 2, 16),
359 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_GOT_LO, 0),
360 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_GOT_LO, 0),
361 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_GOT_HI, 16),
362 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_GOT_HI, 16),
363 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_GOT_HA, 16),
364 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_GOT_HA, 16),
365
366 TILEPRO_UIMM_HOWTO(R_TILEPRO_MMSTART_X0, 1, 5),
367 TILEPRO_UIMM_HOWTO(R_TILEPRO_MMEND_X0, 1, 5),
368 TILEPRO_UIMM_HOWTO(R_TILEPRO_MMSTART_X1, 1, 5),
369 TILEPRO_UIMM_HOWTO(R_TILEPRO_MMEND_X1, 1, 5),
370
371 TILEPRO_UIMM_HOWTO(R_TILEPRO_SHAMT_X0, 1, 5),
372 TILEPRO_UIMM_HOWTO(R_TILEPRO_SHAMT_X1, 1, 5),
373 TILEPRO_UIMM_HOWTO(R_TILEPRO_SHAMT_Y0, 1, 5),
374 TILEPRO_UIMM_HOWTO(R_TILEPRO_SHAMT_Y1, 1, 5),
375
376 TILEPRO_IMM_HOWTO(R_TILEPRO_DEST_IMM8_X1, 1, 8),
377
378 /* These relocs are currently not defined. */
379 EMPTY_HOWTO (56),
380 EMPTY_HOWTO (57),
381 EMPTY_HOWTO (58),
382 EMPTY_HOWTO (59),
383
384 HOWTO (R_TILEPRO_TLS_GD_CALL, /* type */
385 TILEPRO_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
386 4, /* size */
387 29, /* bitsize */
388 true, /* pc_relative */
389 0, /* bitpos */
390 complain_overflow_signed,/* complain_on_overflow */
391 bfd_elf_generic_reloc, /* special_function */
392 "R_TILEPRO_TLS_GD_CALL", /* name */
393 false, /* partial_inplace */
394 0, /* src_mask */
395 -1, /* dst_mask */
396 true), /* pcrel_offset */
397
398 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_X0_TLS_GD_ADD, 1, 8),
399 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_X1_TLS_GD_ADD, 1, 8),
400 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_Y0_TLS_GD_ADD, 1, 8),
401 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_Y1_TLS_GD_ADD, 1, 8),
402 TILEPRO_IMM_HOWTO(R_TILEPRO_TLS_IE_LOAD, 1, 8),
403
404 /* Offsets into the GOT of TLS Descriptors. */
405
406 HOWTO (R_TILEPRO_IMM16_X0_TLS_GD,/* type */
407 0, /* rightshift */
408 2, /* size */
409 16, /* bitsize */
410 false, /* pc_relative */
411 0, /* bitpos */
412 complain_overflow_signed, /* complain_on_overflow */
413 bfd_elf_generic_reloc, /* special_function */
414 "R_TILEPRO_IMM16_X0_TLS_GD",/* name */
415 false, /* partial_inplace */
416 0, /* src_mask */
417 0xffff, /* dst_mask */
418 false), /* pcrel_offset */
419
420 HOWTO (R_TILEPRO_IMM16_X1_TLS_GD,/* type */
421 0, /* rightshift */
422 2, /* size */
423 16, /* bitsize */
424 false, /* pc_relative */
425 0, /* bitpos */
426 complain_overflow_signed, /* complain_on_overflow */
427 bfd_elf_generic_reloc, /* special_function */
428 "R_TILEPRO_IMM16_X1_TLS_GD",/* name */
429 false, /* partial_inplace */
430 0, /* src_mask */
431 0xffff, /* dst_mask */
432 false), /* pcrel_offset */
433
434 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_GD_LO, 0),
435 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_GD_LO, 0),
436 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_GD_HI, 16),
437 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_GD_HI, 16),
438 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_GD_HA, 16),
439 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_GD_HA, 16),
440
441 /* Offsets into the GOT of TLS Descriptors. */
442
443 HOWTO (R_TILEPRO_IMM16_X0_TLS_IE,/* type */
444 0, /* rightshift */
445 2, /* size */
446 16, /* bitsize */
447 false, /* pc_relative */
448 0, /* bitpos */
449 complain_overflow_signed, /* complain_on_overflow */
450 bfd_elf_generic_reloc, /* special_function */
451 "R_TILEPRO_IMM16_X0_TLS_IE",/* name */
452 false, /* partial_inplace */
453 0, /* src_mask */
454 -1, /* dst_mask */
455 true), /* pcrel_offset */
456
457 HOWTO (R_TILEPRO_IMM16_X1_TLS_IE,/* type */
458 0, /* rightshift */
459 2, /* size */
460 16, /* bitsize */
461 false, /* pc_relative */
462 0, /* bitpos */
463 complain_overflow_signed, /* complain_on_overflow */
464 bfd_elf_generic_reloc, /* special_function */
465 "R_TILEPRO_IMM16_X1_TLS_IE",/* name */
466 false, /* partial_inplace */
467 0, /* src_mask */
468 -1, /* dst_mask */
469 true), /* pcrel_offset */
470
471 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_IE_LO, 0),
472 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_IE_LO, 0),
473 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_IE_HI, 16),
474 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_IE_HI, 16),
475 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_IE_HA, 16),
476 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_IE_HA, 16),
477
478 /* These are common with the Solaris TLS implementation. */
479 HOWTO(R_TILEPRO_TLS_DTPMOD32, 0, 0, 0, false, 0, complain_overflow_dont,
480 bfd_elf_generic_reloc, "R_TILEPRO_TLS_DTPMOD32",
481 false, 0, 0, true),
482 HOWTO(R_TILEPRO_TLS_DTPOFF32, 0, 4, 32, false, 0, complain_overflow_bitfield,
483 bfd_elf_generic_reloc, "R_TILEPRO_TLS_DTPOFF32",
484 false, 0, 0xFFFFFFFF, true),
485 HOWTO(R_TILEPRO_TLS_TPOFF32, 0, 0, 0, false, 0, complain_overflow_dont,
486 bfd_elf_generic_reloc, "R_TILEPRO_TLS_TPOFF32",
487 false, 0, 0, true),
488
489 HOWTO (R_TILEPRO_IMM16_X0_TLS_LE,/* type */
490 0, /* rightshift */
491 2, /* size */
492 16, /* bitsize */
493 false, /* pc_relative */
494 0, /* bitpos */
495 complain_overflow_signed, /* complain_on_overflow */
496 bfd_elf_generic_reloc, /* special_function */
497 "R_TILEPRO_IMM16_X0_TLS_LE",/* name */
498 false, /* partial_inplace */
499 0, /* src_mask */
500 -1, /* dst_mask */
501 true), /* pcrel_offset */
502
503 HOWTO (R_TILEPRO_IMM16_X1_TLS_LE,/* type */
504 0, /* rightshift */
505 2, /* size */
506 16, /* bitsize */
507 false, /* pc_relative */
508 0, /* bitpos */
509 complain_overflow_signed, /* complain_on_overflow */
510 bfd_elf_generic_reloc, /* special_function */
511 "R_TILEPRO_IMM16_X1_TLS_LE",/* name */
512 false, /* partial_inplace */
513 0, /* src_mask */
514 -1, /* dst_mask */
515 true), /* pcrel_offset */
516
517 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_LE_LO, 0),
518 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_LE_LO, 0),
519 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_LE_HI, 16),
520 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_LE_HI, 16),
521 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_LE_HA, 16),
522 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_LE_HA, 16),
523 };
524
525 static reloc_howto_type tilepro_elf_howto_table2 [] =
526 {
527 /* GNU extension to record C++ vtable hierarchy */
528 HOWTO (R_TILEPRO_GNU_VTINHERIT, /* type */
529 0, /* rightshift */
530 4, /* size */
531 0, /* bitsize */
532 false, /* pc_relative */
533 0, /* bitpos */
534 complain_overflow_dont, /* complain_on_overflow */
535 NULL, /* special_function */
536 "R_TILEPRO_GNU_VTINHERIT", /* name */
537 false, /* partial_inplace */
538 0, /* src_mask */
539 0, /* dst_mask */
540 false), /* pcrel_offset */
541
542 /* GNU extension to record C++ vtable member usage */
543 HOWTO (R_TILEPRO_GNU_VTENTRY, /* type */
544 0, /* rightshift */
545 4, /* size */
546 0, /* bitsize */
547 false, /* pc_relative */
548 0, /* bitpos */
549 complain_overflow_dont, /* complain_on_overflow */
550 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
551 "R_TILEPRO_GNU_VTENTRY", /* name */
552 false, /* partial_inplace */
553 0, /* src_mask */
554 0, /* dst_mask */
555 false), /* pcrel_offset */
556
557 };
558 \f
559 /* Map BFD reloc types to TILEPRO ELF reloc types. */
560
561 typedef struct tilepro_reloc_map
562 {
563 bfd_reloc_code_real_type bfd_reloc_val;
564 unsigned int tilepro_reloc_val;
565 reloc_howto_type * table;
566 } reloc_map;
567
568 static const reloc_map tilepro_reloc_map [] =
569 {
570 #define TH_REMAP(bfd, tilepro) \
571 { bfd, tilepro, tilepro_elf_howto_table },
572
573 /* Standard relocations. */
574 TH_REMAP (BFD_RELOC_NONE, R_TILEPRO_NONE)
575 TH_REMAP (BFD_RELOC_32, R_TILEPRO_32)
576 TH_REMAP (BFD_RELOC_16, R_TILEPRO_16)
577 TH_REMAP (BFD_RELOC_8, R_TILEPRO_8)
578 TH_REMAP (BFD_RELOC_32_PCREL, R_TILEPRO_32_PCREL)
579 TH_REMAP (BFD_RELOC_16_PCREL, R_TILEPRO_16_PCREL)
580 TH_REMAP (BFD_RELOC_8_PCREL, R_TILEPRO_8_PCREL)
581 TH_REMAP (BFD_RELOC_LO16, R_TILEPRO_LO16)
582 TH_REMAP (BFD_RELOC_HI16, R_TILEPRO_HI16)
583 TH_REMAP (BFD_RELOC_HI16_S, R_TILEPRO_HA16)
584
585 /* Custom relocations. */
586 TH_REMAP (BFD_RELOC_TILEPRO_COPY, R_TILEPRO_COPY)
587 TH_REMAP (BFD_RELOC_TILEPRO_GLOB_DAT, R_TILEPRO_GLOB_DAT)
588 TH_REMAP (BFD_RELOC_TILEPRO_JMP_SLOT, R_TILEPRO_JMP_SLOT)
589 TH_REMAP (BFD_RELOC_TILEPRO_RELATIVE, R_TILEPRO_RELATIVE)
590 TH_REMAP (BFD_RELOC_TILEPRO_BROFF_X1, R_TILEPRO_BROFF_X1)
591 TH_REMAP (BFD_RELOC_TILEPRO_JOFFLONG_X1, R_TILEPRO_JOFFLONG_X1)
592 TH_REMAP (BFD_RELOC_TILEPRO_JOFFLONG_X1_PLT, R_TILEPRO_JOFFLONG_X1_PLT)
593 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X0, R_TILEPRO_IMM8_X0)
594 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y0, R_TILEPRO_IMM8_Y0)
595 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X1, R_TILEPRO_IMM8_X1)
596 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y1, R_TILEPRO_IMM8_Y1)
597 TH_REMAP (BFD_RELOC_TILEPRO_DEST_IMM8_X1, R_TILEPRO_DEST_IMM8_X1)
598 TH_REMAP (BFD_RELOC_TILEPRO_MT_IMM15_X1, R_TILEPRO_MT_IMM15_X1)
599 TH_REMAP (BFD_RELOC_TILEPRO_MF_IMM15_X1, R_TILEPRO_MF_IMM15_X1)
600 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0, R_TILEPRO_IMM16_X0)
601 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1, R_TILEPRO_IMM16_X1)
602 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_LO, R_TILEPRO_IMM16_X0_LO)
603 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_LO, R_TILEPRO_IMM16_X1_LO)
604 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HI, R_TILEPRO_IMM16_X0_HI)
605 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HI, R_TILEPRO_IMM16_X1_HI)
606 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HA, R_TILEPRO_IMM16_X0_HA)
607 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HA, R_TILEPRO_IMM16_X1_HA)
608
609 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_PCREL, R_TILEPRO_IMM16_X0_PCREL)
610 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_PCREL, R_TILEPRO_IMM16_X1_PCREL)
611 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_LO_PCREL, R_TILEPRO_IMM16_X0_LO_PCREL)
612 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_LO_PCREL, R_TILEPRO_IMM16_X1_LO_PCREL)
613 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HI_PCREL, R_TILEPRO_IMM16_X0_HI_PCREL)
614 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HI_PCREL, R_TILEPRO_IMM16_X1_HI_PCREL)
615 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HA_PCREL, R_TILEPRO_IMM16_X0_HA_PCREL)
616 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HA_PCREL, R_TILEPRO_IMM16_X1_HA_PCREL)
617
618 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT, R_TILEPRO_IMM16_X0_GOT)
619 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT, R_TILEPRO_IMM16_X1_GOT)
620 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT_LO, R_TILEPRO_IMM16_X0_GOT_LO)
621 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT_LO, R_TILEPRO_IMM16_X1_GOT_LO)
622 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT_HI, R_TILEPRO_IMM16_X0_GOT_HI)
623 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT_HI, R_TILEPRO_IMM16_X1_GOT_HI)
624 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT_HA, R_TILEPRO_IMM16_X0_GOT_HA)
625 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT_HA, R_TILEPRO_IMM16_X1_GOT_HA)
626
627 TH_REMAP (BFD_RELOC_TILEPRO_MMSTART_X0, R_TILEPRO_MMSTART_X0)
628 TH_REMAP (BFD_RELOC_TILEPRO_MMEND_X0, R_TILEPRO_MMEND_X0)
629 TH_REMAP (BFD_RELOC_TILEPRO_MMSTART_X1, R_TILEPRO_MMSTART_X1)
630 TH_REMAP (BFD_RELOC_TILEPRO_MMEND_X1, R_TILEPRO_MMEND_X1)
631 TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_X0, R_TILEPRO_SHAMT_X0)
632 TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_X1, R_TILEPRO_SHAMT_X1)
633 TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_Y0, R_TILEPRO_SHAMT_Y0)
634 TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_Y1, R_TILEPRO_SHAMT_Y1)
635
636 TH_REMAP (BFD_RELOC_TILEPRO_TLS_GD_CALL, R_TILEPRO_TLS_GD_CALL)
637 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X0_TLS_GD_ADD, R_TILEPRO_IMM8_X0_TLS_GD_ADD)
638 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X1_TLS_GD_ADD, R_TILEPRO_IMM8_X1_TLS_GD_ADD)
639 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y0_TLS_GD_ADD, R_TILEPRO_IMM8_Y0_TLS_GD_ADD)
640 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y1_TLS_GD_ADD, R_TILEPRO_IMM8_Y1_TLS_GD_ADD)
641 TH_REMAP (BFD_RELOC_TILEPRO_TLS_IE_LOAD, R_TILEPRO_TLS_IE_LOAD)
642
643 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD, R_TILEPRO_IMM16_X0_TLS_GD)
644 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD, R_TILEPRO_IMM16_X1_TLS_GD)
645 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD_LO, R_TILEPRO_IMM16_X0_TLS_GD_LO)
646 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD_LO, R_TILEPRO_IMM16_X1_TLS_GD_LO)
647 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD_HI, R_TILEPRO_IMM16_X0_TLS_GD_HI)
648 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD_HI, R_TILEPRO_IMM16_X1_TLS_GD_HI)
649 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD_HA, R_TILEPRO_IMM16_X0_TLS_GD_HA)
650 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD_HA, R_TILEPRO_IMM16_X1_TLS_GD_HA)
651
652 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE, R_TILEPRO_IMM16_X0_TLS_IE)
653 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE, R_TILEPRO_IMM16_X1_TLS_IE)
654 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE_LO, R_TILEPRO_IMM16_X0_TLS_IE_LO)
655 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE_LO, R_TILEPRO_IMM16_X1_TLS_IE_LO)
656 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE_HI, R_TILEPRO_IMM16_X0_TLS_IE_HI)
657 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE_HI, R_TILEPRO_IMM16_X1_TLS_IE_HI)
658 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE_HA, R_TILEPRO_IMM16_X0_TLS_IE_HA)
659 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE_HA, R_TILEPRO_IMM16_X1_TLS_IE_HA)
660
661 TH_REMAP (BFD_RELOC_TILEPRO_TLS_DTPMOD32, R_TILEPRO_TLS_DTPMOD32)
662 TH_REMAP (BFD_RELOC_TILEPRO_TLS_DTPOFF32, R_TILEPRO_TLS_DTPOFF32)
663 TH_REMAP (BFD_RELOC_TILEPRO_TLS_TPOFF32, R_TILEPRO_TLS_TPOFF32)
664
665 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE, R_TILEPRO_IMM16_X0_TLS_LE)
666 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE, R_TILEPRO_IMM16_X1_TLS_LE)
667 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_LO, R_TILEPRO_IMM16_X0_TLS_LE_LO)
668 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_LO, R_TILEPRO_IMM16_X1_TLS_LE_LO)
669 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_HI, R_TILEPRO_IMM16_X0_TLS_LE_HI)
670 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_HI, R_TILEPRO_IMM16_X1_TLS_LE_HI)
671 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_HA, R_TILEPRO_IMM16_X0_TLS_LE_HA)
672 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_HA, R_TILEPRO_IMM16_X1_TLS_LE_HA)
673
674 #undef TH_REMAP
675
676 { BFD_RELOC_VTABLE_INHERIT, R_TILEPRO_GNU_VTINHERIT, tilepro_elf_howto_table2 },
677 { BFD_RELOC_VTABLE_ENTRY, R_TILEPRO_GNU_VTENTRY, tilepro_elf_howto_table2 },
678 };
679
680
681
682 /* TILEPRO ELF linker hash entry. */
683
684 struct tilepro_elf_link_hash_entry
685 {
686 struct elf_link_hash_entry elf;
687
688 #define GOT_UNKNOWN 0
689 #define GOT_NORMAL 1
690 #define GOT_TLS_GD 2
691 #define GOT_TLS_IE 4
692 unsigned char tls_type;
693 };
694
695 #define tilepro_elf_hash_entry(ent) \
696 ((struct tilepro_elf_link_hash_entry *)(ent))
697
698 struct _bfd_tilepro_elf_obj_tdata
699 {
700 struct elf_obj_tdata root;
701
702 /* tls_type for each local got entry. */
703 char *local_got_tls_type;
704 };
705
706 #define _bfd_tilepro_elf_tdata(abfd) \
707 ((struct _bfd_tilepro_elf_obj_tdata *) (abfd)->tdata.any)
708
709 #define _bfd_tilepro_elf_local_got_tls_type(abfd) \
710 (_bfd_tilepro_elf_tdata (abfd)->local_got_tls_type)
711
712 #define is_tilepro_elf(bfd) \
713 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
714 && elf_tdata (bfd) != NULL \
715 && elf_object_id (bfd) == TILEPRO_ELF_DATA)
716
717 /* Allocate TILEPro ELF private object data. */
718
719 static bool
720 tilepro_elf_mkobject (bfd *abfd)
721 {
722 return bfd_elf_allocate_object (abfd,
723 sizeof (struct _bfd_tilepro_elf_obj_tdata),
724 TILEPRO_ELF_DATA);
725 }
726
727 #include "elf/common.h"
728 #include "elf/internal.h"
729
730 /* Get the Tilepro ELF linker hash table from a link_info structure. */
731 #define tilepro_elf_hash_table(p) \
732 ((is_elf_hash_table ((p)->hash) \
733 && elf_hash_table_id (elf_hash_table (p)) == TILEPRO_ELF_DATA) \
734 ? (struct elf_link_hash_table *) (p)->hash : NULL)
735
736 static reloc_howto_type *
737 tilepro_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
738 bfd_reloc_code_real_type code)
739 {
740 unsigned int i;
741
742 for (i = ARRAY_SIZE (tilepro_reloc_map); i--;)
743 {
744 const reloc_map * entry;
745
746 entry = tilepro_reloc_map + i;
747
748 if (entry->bfd_reloc_val == code)
749 return entry->table + (entry->tilepro_reloc_val
750 - entry->table[0].type);
751 }
752
753 return NULL;
754 }
755
756 static reloc_howto_type *
757 tilepro_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
758 const char *r_name)
759 {
760 unsigned int i;
761
762 for (i = 0;
763 i < (sizeof (tilepro_elf_howto_table)
764 / sizeof (tilepro_elf_howto_table[0]));
765 i++)
766 if (tilepro_elf_howto_table[i].name != NULL
767 && strcasecmp (tilepro_elf_howto_table[i].name, r_name) == 0)
768 return &tilepro_elf_howto_table[i];
769
770 return NULL;
771 }
772
773 /* Set the howto pointer for an TILEPro ELF reloc. */
774
775 static bool
776 tilepro_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED,
777 arelent * cache_ptr,
778 Elf_Internal_Rela * dst)
779 {
780 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
781
782 if (r_type <= (unsigned int) R_TILEPRO_IMM16_X1_TLS_LE_HA)
783 cache_ptr->howto = &tilepro_elf_howto_table [r_type];
784 else if (r_type - R_TILEPRO_GNU_VTINHERIT
785 <= ((unsigned int) R_TILEPRO_GNU_VTENTRY
786 - (unsigned int) R_TILEPRO_GNU_VTINHERIT))
787 cache_ptr->howto
788 = &tilepro_elf_howto_table2 [r_type - R_TILEPRO_GNU_VTINHERIT];
789 else
790 {
791 /* xgettext:c-format */
792 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
793 abfd, r_type);
794 bfd_set_error (bfd_error_bad_value);
795 return false;
796 }
797 return true;
798 }
799
800 typedef tilepro_bundle_bits (*tilepro_create_func)(int);
801
802 static const tilepro_create_func reloc_to_create_func[] =
803 {
804 /* The first fourteen relocation types don't correspond to operands */
805 NULL,
806 NULL,
807 NULL,
808 NULL,
809 NULL,
810 NULL,
811 NULL,
812 NULL,
813 NULL,
814 NULL,
815 NULL,
816 NULL,
817 NULL,
818 NULL,
819
820 /* The remaining relocations are used for immediate operands */
821 create_BrOff_X1,
822 create_JOffLong_X1,
823 create_JOffLong_X1,
824 create_Imm8_X0,
825 create_Imm8_Y0,
826 create_Imm8_X1,
827 create_Imm8_Y1,
828 create_MT_Imm15_X1,
829 create_MF_Imm15_X1,
830 create_Imm16_X0,
831 create_Imm16_X1,
832 create_Imm16_X0,
833 create_Imm16_X1,
834 create_Imm16_X0,
835 create_Imm16_X1,
836 create_Imm16_X0,
837 create_Imm16_X1,
838 create_Imm16_X0,
839 create_Imm16_X1,
840 create_Imm16_X0,
841 create_Imm16_X1,
842 create_Imm16_X0,
843 create_Imm16_X1,
844 create_Imm16_X0,
845 create_Imm16_X1,
846 create_Imm16_X0,
847 create_Imm16_X1,
848 create_Imm16_X0,
849 create_Imm16_X1,
850 create_Imm16_X0,
851 create_Imm16_X1,
852 create_Imm16_X0,
853 create_Imm16_X1,
854 create_MMStart_X0,
855 create_MMEnd_X0,
856 create_MMStart_X1,
857 create_MMEnd_X1,
858 create_ShAmt_X0,
859 create_ShAmt_X1,
860 create_ShAmt_Y0,
861 create_ShAmt_Y1,
862
863 create_Dest_Imm8_X1,
864 NULL,
865 NULL,
866 NULL,
867 NULL,
868 NULL,
869 NULL,
870 NULL,
871 NULL,
872 NULL,
873 NULL,
874
875 create_Imm16_X0,
876 create_Imm16_X1,
877 create_Imm16_X0,
878 create_Imm16_X1,
879 create_Imm16_X0,
880 create_Imm16_X1,
881 create_Imm16_X0,
882 create_Imm16_X1,
883 create_Imm16_X0,
884 create_Imm16_X1,
885 create_Imm16_X0,
886 create_Imm16_X1,
887 create_Imm16_X0,
888 create_Imm16_X1,
889 create_Imm16_X0,
890 create_Imm16_X1,
891
892 NULL,
893 NULL,
894 NULL,
895
896 create_Imm16_X0,
897 create_Imm16_X1,
898 create_Imm16_X0,
899 create_Imm16_X1,
900 create_Imm16_X0,
901 create_Imm16_X1,
902 create_Imm16_X0,
903 create_Imm16_X1,
904 };
905
906 #define NELEMS(a) ((int) (sizeof (a) / sizeof ((a)[0])))
907
908 /* Support for core dump NOTE sections. */
909
910 static bool
911 tilepro_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
912 {
913 int offset;
914 size_t size;
915
916 if (note->descsz != TILEPRO_PRSTATUS_SIZEOF)
917 return false;
918
919 /* pr_cursig */
920 elf_tdata (abfd)->core->signal =
921 bfd_get_16 (abfd, note->descdata + TILEPRO_PRSTATUS_OFFSET_PR_CURSIG);
922
923 /* pr_pid */
924 elf_tdata (abfd)->core->pid =
925 bfd_get_32 (abfd, note->descdata + TILEPRO_PRSTATUS_OFFSET_PR_PID);
926
927 /* pr_reg */
928 offset = TILEPRO_PRSTATUS_OFFSET_PR_REG;
929 size = TILEPRO_GREGSET_T_SIZE;
930
931 /* Make a ".reg/999" section. */
932 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
933 size, note->descpos + offset);
934 }
935
936 static bool
937 tilepro_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
938 {
939 if (note->descsz != TILEPRO_PRPSINFO_SIZEOF)
940 return false;
941
942 elf_tdata (abfd)->core->program
943 = _bfd_elfcore_strndup (abfd,
944 note->descdata + TILEPRO_PRPSINFO_OFFSET_PR_FNAME,
945 16);
946 elf_tdata (abfd)->core->command
947 = _bfd_elfcore_strndup (abfd,
948 note->descdata + TILEPRO_PRPSINFO_OFFSET_PR_PSARGS,
949 ELF_PR_PSARGS_SIZE);
950
951
952 /* Note that for some reason, a spurious space is tacked
953 onto the end of the args in some (at least one anyway)
954 implementations, so strip it off if it exists. */
955 {
956 char *command = elf_tdata (abfd)->core->command;
957 int n = strlen (command);
958
959 if (0 < n && command[n - 1] == ' ')
960 command[n - 1] = '\0';
961 }
962
963 return true;
964 }
965
966
967 static void
968 tilepro_elf_append_rela_32 (bfd *abfd, asection *s, Elf_Internal_Rela *rel)
969 {
970 Elf32_External_Rela *loc32;
971
972 loc32 = (Elf32_External_Rela *) s->contents;
973 loc32 += s->reloc_count++;
974 bfd_elf32_swap_reloca_out (abfd, rel, (bfd_byte *) loc32);
975 }
976
977 /* PLT/GOT stuff */
978
979 /* The procedure linkage table starts with the following header:
980
981 {
982 rli r29, r29, 16
983 lwadd r28, r27, 4
984 }
985 lw r27, r27
986 {
987 info 10 ## SP not offset, return PC in LR
988 jr r27
989 }
990
991 Subsequent entries are the following, jumping to the header at the end:
992
993 lnk r28
994 1:
995 {
996 auli r28, r28, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET>
997 auli r27, r28, <_GLOBAL_OFFSET_TABLE_ - 1b>
998 }
999 {
1000 addli r28, r28, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET>
1001 addli r27, r27, <_GLOBAL_OFFSET_TABLE_ - 1b>
1002 }
1003 {
1004 auli r29, zero, MY_PLT_INDEX
1005 lw r28, r28
1006 }
1007 {
1008 info 10 ## SP not offset, return PC in LR
1009 jr r28
1010 }
1011
1012 We initially store MY_PLT_INDEX in the high bits so that we can use the all
1013 16 bits as an unsigned offset; if we use the low bits we would get an
1014 unwanted sign extension. The PLT header then rotates the index to get the
1015 right value, before calling the resolution routine. This computation can
1016 fit in unused bundle slots so it's free.
1017
1018 This code sequence lets the code at at the start of the PLT determine
1019 which PLT entry was executed by examining 'r29'.
1020
1021 Note that MY_PLT_INDEX skips over the header entries, so the first
1022 actual jump table entry has index zero.
1023 */
1024
1025 #define PLT_HEADER_SIZE_IN_BUNDLES 3
1026 #define PLT_ENTRY_SIZE_IN_BUNDLES 5
1027
1028 #define PLT_HEADER_SIZE \
1029 (PLT_HEADER_SIZE_IN_BUNDLES * TILEPRO_BUNDLE_SIZE_IN_BYTES)
1030 #define PLT_ENTRY_SIZE \
1031 (PLT_ENTRY_SIZE_IN_BUNDLES * TILEPRO_BUNDLE_SIZE_IN_BYTES)
1032
1033 /* The size in bytes of an entry in the global offset table. */
1034
1035 #define GOT_ENTRY_SIZE TILEPRO_BYTES_PER_WORD
1036
1037 #define GOTPLT_HEADER_SIZE (2 * GOT_ENTRY_SIZE)
1038
1039
1040 static const bfd_byte
1041 tilepro_plt0_entry[PLT_HEADER_SIZE] =
1042 {
1043 0x5d, 0x07, 0x03, 0x70,
1044 0x6e, 0x23, 0xd0, 0x30, /* { rli r29, r29, 16 ; lwadd r28, r27, 4 } */
1045 0x00, 0x50, 0xba, 0x6d,
1046 0x00, 0x08, 0x6d, 0xdc, /* { lw r27, r27 } */
1047 0xff, 0xaf, 0x10, 0x50,
1048 0x60, 0x03, 0x18, 0x08, /* { info 10 ; jr r27 } */
1049 };
1050
1051 static const bfd_byte
1052 tilepro_short_plt_entry[PLT_ENTRY_SIZE] =
1053 {
1054 0x00, 0x50, 0x16, 0x70,
1055 0x0e, 0x00, 0x1a, 0x08, /* { lnk r28 } */
1056 0x1c, 0x07, 0x00, 0xa0,
1057 0x8d, 0x03, 0x00, 0x18, /* { addli r28, r28, 0 ; addli r27, r28, 0 } */
1058 0xdd, 0x0f, 0x00, 0x30,
1059 0x8e, 0x73, 0x0b, 0x40, /* { auli r29, zero, 0 ; lw r28, r28 } */
1060 0xff, 0xaf, 0x10, 0x50,
1061 0x80, 0x03, 0x18, 0x08, /* { info 10 ; jr r28 } */
1062 0x00, 0x00, 0x00, 0x00,
1063 0x00, 0x00, 0x00, 0x00,
1064 };
1065
1066 static const bfd_byte
1067 tilepro_long_plt_entry[PLT_ENTRY_SIZE] =
1068 {
1069 0x00, 0x50, 0x16, 0x70,
1070 0x0e, 0x00, 0x1a, 0x08, /* { lnk r28 } */
1071 0x1c, 0x07, 0x00, 0xb0,
1072 0x8d, 0x03, 0x00, 0x20, /* { auli r28, r28, 0 ; auli r27, r28, 0 } */
1073 0x1c, 0x07, 0x00, 0xa0,
1074 0x6d, 0x03, 0x00, 0x18, /* { addli r28, r28, 0 ; addli r27, r27, 0 } */
1075 0xdd, 0x0f, 0x00, 0x30,
1076 0x8e, 0x73, 0x0b, 0x40, /* { auli r29, zero, 0 ; lw r28, r28 } */
1077 0xff, 0xaf, 0x10, 0x50,
1078 0x80, 0x03, 0x18, 0x08, /* { info 10 ; jr r28 } */
1079 };
1080
1081 static bfd_vma
1082 tilepro_ha16(bfd_vma vma)
1083 {
1084 return ((vma >> 16) + ((vma >> 15) & 1)) & 0xffff;
1085 }
1086
1087 static int
1088 tilepro_plt_entry_build (asection *splt, asection *sgotplt, bfd_vma offset,
1089 bfd_vma *r_offset)
1090 {
1091 int plt_index = (offset - PLT_ENTRY_SIZE) / PLT_ENTRY_SIZE;
1092 int got_offset = plt_index * GOT_ENTRY_SIZE + GOTPLT_HEADER_SIZE;
1093 tilepro_bundle_bits *pc;
1094
1095 /* Compute the distance from the got entry to the lnk. */
1096 bfd_signed_vma dist_got_entry = sgotplt->output_section->vma
1097 + sgotplt->output_offset
1098 + got_offset
1099 - splt->output_section->vma
1100 - splt->output_offset
1101 - offset
1102 - TILEPRO_BUNDLE_SIZE_IN_BYTES;
1103
1104 /* Compute the distance to GOTPLT[0]. */
1105 bfd_signed_vma dist_got0 = dist_got_entry - got_offset;
1106
1107 /* Check whether we can use the short plt entry with 16-bit offset. */
1108 bool short_plt_entry =
1109 (dist_got_entry <= 0x7fff && dist_got0 >= -0x8000);
1110
1111 /* Copy the plt entry template. */
1112 memcpy (splt->contents + offset,
1113 short_plt_entry ? tilepro_short_plt_entry : tilepro_long_plt_entry,
1114 PLT_ENTRY_SIZE);
1115
1116 /* Write the immediate offsets. */
1117 pc = (tilepro_bundle_bits *)(splt->contents + offset);
1118 pc++;
1119
1120 if (!short_plt_entry)
1121 {
1122 /* { auli r28, r28, &GOTPLT[MY_GOT_INDEX] ; auli r27, r28, &GOTPLT[0] } */
1123 *pc++ |= create_Imm16_X0 (tilepro_ha16 (dist_got_entry))
1124 | create_Imm16_X1 (tilepro_ha16 (dist_got0));
1125 }
1126
1127 /* { addli r28, r28, &GOTPLT[MY_GOT_INDEX] ; addli r27, r28, &GOTPLT[0] } or
1128 { addli r28, r28, &GOTPLT[MY_GOT_INDEX] ; addli r27, r27, &GOTPLT[0] } */
1129 *pc++ |= create_Imm16_X0 (dist_got_entry)
1130 | create_Imm16_X1 (dist_got0);
1131
1132 /* { auli r29, zero, MY_PLT_INDEX ; lw r28, r28 } */
1133 *pc |= create_Imm16_X0 (plt_index);
1134
1135 /* Set the relocation offset. */
1136 *r_offset = got_offset;
1137
1138 return plt_index;
1139 }
1140
1141 #define TILEPRO_ELF_RELA_BYTES (sizeof(Elf32_External_Rela))
1142
1143
1144 /* Create an entry in an TILEPro ELF linker hash table. */
1145
1146 static struct bfd_hash_entry *
1147 link_hash_newfunc (struct bfd_hash_entry *entry,
1148 struct bfd_hash_table *table, const char *string)
1149 {
1150 /* Allocate the structure if it has not already been allocated by a
1151 subclass. */
1152 if (entry == NULL)
1153 {
1154 entry =
1155 bfd_hash_allocate (table,
1156 sizeof (struct tilepro_elf_link_hash_entry));
1157 if (entry == NULL)
1158 return entry;
1159 }
1160
1161 /* Call the allocation method of the superclass. */
1162 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1163 if (entry != NULL)
1164 {
1165 struct tilepro_elf_link_hash_entry *eh;
1166
1167 eh = (struct tilepro_elf_link_hash_entry *) entry;
1168 eh->tls_type = GOT_UNKNOWN;
1169 }
1170
1171 return entry;
1172 }
1173
1174 /* Create a TILEPRO ELF linker hash table. */
1175
1176 static struct bfd_link_hash_table *
1177 tilepro_elf_link_hash_table_create (bfd *abfd)
1178 {
1179 struct elf_link_hash_table *ret;
1180 size_t amt = sizeof (struct elf_link_hash_table);
1181
1182 ret = (struct elf_link_hash_table *) bfd_zmalloc (amt);
1183 if (ret == NULL)
1184 return NULL;
1185
1186 if (!_bfd_elf_link_hash_table_init (ret, abfd, link_hash_newfunc,
1187 sizeof (struct tilepro_elf_link_hash_entry),
1188 TILEPRO_ELF_DATA))
1189 {
1190 free (ret);
1191 return NULL;
1192 }
1193
1194 return &ret->root;
1195 }
1196
1197 /* Create the .got section. */
1198
1199 static bool
1200 tilepro_elf_create_got_section (bfd *abfd, struct bfd_link_info *info)
1201 {
1202 flagword flags;
1203 asection *s, *s_got;
1204 struct elf_link_hash_entry *h;
1205 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1206 struct elf_link_hash_table *htab = elf_hash_table (info);
1207
1208 /* This function may be called more than once. */
1209 if (htab->sgot != NULL)
1210 return true;
1211
1212 flags = bed->dynamic_sec_flags;
1213
1214 s = bfd_make_section_with_flags (abfd,
1215 (bed->rela_plts_and_copies_p
1216 ? ".rela.got" : ".rel.got"),
1217 (bed->dynamic_sec_flags
1218 | SEC_READONLY));
1219 if (s == NULL
1220 || !bfd_set_section_alignment (s, bed->s->log_file_align))
1221 return false;
1222 htab->srelgot = s;
1223
1224 s = s_got = bfd_make_section_with_flags (abfd, ".got", flags);
1225 if (s == NULL
1226 || !bfd_set_section_alignment (s, bed->s->log_file_align))
1227 return false;
1228 htab->sgot = s;
1229
1230 /* The first bit of the global offset table is the header. */
1231 s->size += bed->got_header_size;
1232
1233 if (bed->want_got_plt)
1234 {
1235 s = bfd_make_section_with_flags (abfd, ".got.plt", flags);
1236 if (s == NULL
1237 || !bfd_set_section_alignment (s, bed->s->log_file_align))
1238 return false;
1239 htab->sgotplt = s;
1240
1241 /* Reserve room for the header. */
1242 s->size += GOTPLT_HEADER_SIZE;
1243 }
1244
1245 if (bed->want_got_sym)
1246 {
1247 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
1248 section. We don't do this in the linker script because we don't want
1249 to define the symbol if we are not creating a global offset
1250 table. */
1251 h = _bfd_elf_define_linkage_sym (abfd, info, s_got,
1252 "_GLOBAL_OFFSET_TABLE_");
1253 elf_hash_table (info)->hgot = h;
1254 if (h == NULL)
1255 return false;
1256 }
1257
1258 return true;
1259 }
1260
1261 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
1262 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
1263 hash table. */
1264
1265 static bool
1266 tilepro_elf_create_dynamic_sections (bfd *dynobj,
1267 struct bfd_link_info *info)
1268 {
1269 if (!tilepro_elf_create_got_section (dynobj, info))
1270 return false;
1271
1272 return _bfd_elf_create_dynamic_sections (dynobj, info);
1273 }
1274
1275 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1276
1277 static void
1278 tilepro_elf_copy_indirect_symbol (struct bfd_link_info *info,
1279 struct elf_link_hash_entry *dir,
1280 struct elf_link_hash_entry *ind)
1281 {
1282 struct tilepro_elf_link_hash_entry *edir, *eind;
1283
1284 edir = (struct tilepro_elf_link_hash_entry *) dir;
1285 eind = (struct tilepro_elf_link_hash_entry *) ind;
1286
1287 if (ind->root.type == bfd_link_hash_indirect
1288 && dir->got.refcount <= 0)
1289 {
1290 edir->tls_type = eind->tls_type;
1291 eind->tls_type = GOT_UNKNOWN;
1292 }
1293 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1294 }
1295
1296 static int
1297 tilepro_tls_translate_to_le (int r_type)
1298 {
1299 switch (r_type)
1300 {
1301 case R_TILEPRO_IMM16_X0_TLS_GD:
1302 case R_TILEPRO_IMM16_X0_TLS_IE:
1303 return R_TILEPRO_IMM16_X0_TLS_LE;
1304
1305 case R_TILEPRO_IMM16_X1_TLS_GD:
1306 case R_TILEPRO_IMM16_X1_TLS_IE:
1307 return R_TILEPRO_IMM16_X1_TLS_LE;
1308
1309 case R_TILEPRO_IMM16_X0_TLS_GD_LO:
1310 case R_TILEPRO_IMM16_X0_TLS_IE_LO:
1311 return R_TILEPRO_IMM16_X0_TLS_LE_LO;
1312
1313 case R_TILEPRO_IMM16_X1_TLS_GD_LO:
1314 case R_TILEPRO_IMM16_X1_TLS_IE_LO:
1315 return R_TILEPRO_IMM16_X1_TLS_LE_LO;
1316
1317 case R_TILEPRO_IMM16_X0_TLS_GD_HI:
1318 case R_TILEPRO_IMM16_X0_TLS_IE_HI:
1319 return R_TILEPRO_IMM16_X0_TLS_LE_HI;
1320
1321 case R_TILEPRO_IMM16_X1_TLS_GD_HI:
1322 case R_TILEPRO_IMM16_X1_TLS_IE_HI:
1323 return R_TILEPRO_IMM16_X1_TLS_LE_HI;
1324
1325 case R_TILEPRO_IMM16_X0_TLS_GD_HA:
1326 case R_TILEPRO_IMM16_X0_TLS_IE_HA:
1327 return R_TILEPRO_IMM16_X0_TLS_LE_HA;
1328
1329 case R_TILEPRO_IMM16_X1_TLS_GD_HA:
1330 case R_TILEPRO_IMM16_X1_TLS_IE_HA:
1331 return R_TILEPRO_IMM16_X1_TLS_LE_HA;
1332 }
1333 return r_type;
1334 }
1335
1336 static int
1337 tilepro_tls_translate_to_ie (int r_type)
1338 {
1339 switch (r_type)
1340 {
1341 case R_TILEPRO_IMM16_X0_TLS_GD:
1342 case R_TILEPRO_IMM16_X0_TLS_IE:
1343 return R_TILEPRO_IMM16_X0_TLS_IE;
1344
1345 case R_TILEPRO_IMM16_X1_TLS_GD:
1346 case R_TILEPRO_IMM16_X1_TLS_IE:
1347 return R_TILEPRO_IMM16_X1_TLS_IE;
1348
1349 case R_TILEPRO_IMM16_X0_TLS_GD_LO:
1350 case R_TILEPRO_IMM16_X0_TLS_IE_LO:
1351 return R_TILEPRO_IMM16_X0_TLS_IE_LO;
1352
1353 case R_TILEPRO_IMM16_X1_TLS_GD_LO:
1354 case R_TILEPRO_IMM16_X1_TLS_IE_LO:
1355 return R_TILEPRO_IMM16_X1_TLS_IE_LO;
1356
1357 case R_TILEPRO_IMM16_X0_TLS_GD_HI:
1358 case R_TILEPRO_IMM16_X0_TLS_IE_HI:
1359 return R_TILEPRO_IMM16_X0_TLS_IE_HI;
1360
1361 case R_TILEPRO_IMM16_X1_TLS_GD_HI:
1362 case R_TILEPRO_IMM16_X1_TLS_IE_HI:
1363 return R_TILEPRO_IMM16_X1_TLS_IE_HI;
1364
1365 case R_TILEPRO_IMM16_X0_TLS_GD_HA:
1366 case R_TILEPRO_IMM16_X0_TLS_IE_HA:
1367 return R_TILEPRO_IMM16_X0_TLS_IE_HA;
1368
1369 case R_TILEPRO_IMM16_X1_TLS_GD_HA:
1370 case R_TILEPRO_IMM16_X1_TLS_IE_HA:
1371 return R_TILEPRO_IMM16_X1_TLS_IE_HA;
1372 }
1373 return r_type;
1374 }
1375
1376 static int
1377 tilepro_elf_tls_transition (struct bfd_link_info *info, int r_type,
1378 int is_local)
1379 {
1380 if (!bfd_link_executable (info))
1381 return r_type;
1382
1383 if (is_local)
1384 return tilepro_tls_translate_to_le (r_type);
1385 else
1386 return tilepro_tls_translate_to_ie (r_type);
1387 }
1388
1389 /* Look through the relocs for a section during the first phase, and
1390 allocate space in the global offset table or procedure linkage
1391 table. */
1392
1393 static bool
1394 tilepro_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
1395 asection *sec, const Elf_Internal_Rela *relocs)
1396 {
1397 struct elf_link_hash_table *htab;
1398 Elf_Internal_Shdr *symtab_hdr;
1399 struct elf_link_hash_entry **sym_hashes;
1400 const Elf_Internal_Rela *rel;
1401 const Elf_Internal_Rela *rel_end;
1402 asection *sreloc;
1403 int num_relocs;
1404
1405 if (bfd_link_relocatable (info))
1406 return true;
1407
1408 htab = tilepro_elf_hash_table (info);
1409 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1410 sym_hashes = elf_sym_hashes (abfd);
1411
1412 sreloc = NULL;
1413
1414 num_relocs = sec->reloc_count;
1415
1416 BFD_ASSERT (is_tilepro_elf (abfd) || num_relocs == 0);
1417
1418 if (htab->dynobj == NULL)
1419 htab->dynobj = abfd;
1420
1421 rel_end = relocs + num_relocs;
1422 for (rel = relocs; rel < rel_end; rel++)
1423 {
1424 unsigned int r_type;
1425 unsigned int r_symndx;
1426 struct elf_link_hash_entry *h;
1427 int tls_type;
1428
1429 r_symndx = ELF32_R_SYM (rel->r_info);
1430 r_type = ELF32_R_TYPE (rel->r_info);
1431
1432 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1433 {
1434 /* xgettext:c-format */
1435 _bfd_error_handler (_("%pB: bad symbol index: %d"),
1436 abfd, r_symndx);
1437 return false;
1438 }
1439
1440 if (r_symndx < symtab_hdr->sh_info)
1441 h = NULL;
1442 else
1443 {
1444 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1445 while (h->root.type == bfd_link_hash_indirect
1446 || h->root.type == bfd_link_hash_warning)
1447 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1448 }
1449
1450 r_type = tilepro_elf_tls_transition (info, r_type, h == NULL);
1451 switch (r_type)
1452 {
1453 case R_TILEPRO_IMM16_X0_TLS_LE:
1454 case R_TILEPRO_IMM16_X1_TLS_LE:
1455 case R_TILEPRO_IMM16_X0_TLS_LE_LO:
1456 case R_TILEPRO_IMM16_X1_TLS_LE_LO:
1457 case R_TILEPRO_IMM16_X0_TLS_LE_HI:
1458 case R_TILEPRO_IMM16_X1_TLS_LE_HI:
1459 case R_TILEPRO_IMM16_X0_TLS_LE_HA:
1460 case R_TILEPRO_IMM16_X1_TLS_LE_HA:
1461 if (!bfd_link_executable (info))
1462 goto r_tilepro_plt32;
1463 break;
1464
1465 case R_TILEPRO_IMM16_X0_TLS_GD:
1466 case R_TILEPRO_IMM16_X1_TLS_GD:
1467 case R_TILEPRO_IMM16_X0_TLS_GD_LO:
1468 case R_TILEPRO_IMM16_X1_TLS_GD_LO:
1469 case R_TILEPRO_IMM16_X0_TLS_GD_HI:
1470 case R_TILEPRO_IMM16_X1_TLS_GD_HI:
1471 case R_TILEPRO_IMM16_X0_TLS_GD_HA:
1472 case R_TILEPRO_IMM16_X1_TLS_GD_HA:
1473 BFD_ASSERT (bfd_link_pic (info));
1474 tls_type = GOT_TLS_GD;
1475 goto have_got_reference;
1476
1477 case R_TILEPRO_IMM16_X0_TLS_IE:
1478 case R_TILEPRO_IMM16_X1_TLS_IE:
1479 case R_TILEPRO_IMM16_X0_TLS_IE_LO:
1480 case R_TILEPRO_IMM16_X1_TLS_IE_LO:
1481 case R_TILEPRO_IMM16_X0_TLS_IE_HI:
1482 case R_TILEPRO_IMM16_X1_TLS_IE_HI:
1483 case R_TILEPRO_IMM16_X0_TLS_IE_HA:
1484 case R_TILEPRO_IMM16_X1_TLS_IE_HA:
1485 tls_type = GOT_TLS_IE;
1486 if (!bfd_link_executable (info))
1487 info->flags |= DF_STATIC_TLS;
1488 goto have_got_reference;
1489
1490 case R_TILEPRO_IMM16_X0_GOT:
1491 case R_TILEPRO_IMM16_X1_GOT:
1492 case R_TILEPRO_IMM16_X0_GOT_LO:
1493 case R_TILEPRO_IMM16_X1_GOT_LO:
1494 case R_TILEPRO_IMM16_X0_GOT_HI:
1495 case R_TILEPRO_IMM16_X1_GOT_HI:
1496 case R_TILEPRO_IMM16_X0_GOT_HA:
1497 case R_TILEPRO_IMM16_X1_GOT_HA:
1498 tls_type = GOT_NORMAL;
1499 /* Fall Through */
1500
1501 have_got_reference:
1502 /* This symbol requires a global offset table entry. */
1503 {
1504 int old_tls_type;
1505
1506 if (h != NULL)
1507 {
1508 h->got.refcount += 1;
1509 old_tls_type = tilepro_elf_hash_entry(h)->tls_type;
1510 }
1511 else
1512 {
1513 bfd_signed_vma *local_got_refcounts;
1514
1515 /* This is a global offset table entry for a local symbol. */
1516 local_got_refcounts = elf_local_got_refcounts (abfd);
1517 if (local_got_refcounts == NULL)
1518 {
1519 bfd_size_type size;
1520
1521 size = symtab_hdr->sh_info;
1522 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1523 local_got_refcounts = ((bfd_signed_vma *)
1524 bfd_zalloc (abfd, size));
1525 if (local_got_refcounts == NULL)
1526 return false;
1527 elf_local_got_refcounts (abfd) = local_got_refcounts;
1528 _bfd_tilepro_elf_local_got_tls_type (abfd)
1529 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1530 }
1531 local_got_refcounts[r_symndx] += 1;
1532 old_tls_type =
1533 _bfd_tilepro_elf_local_got_tls_type (abfd) [r_symndx];
1534 }
1535
1536 /* If a TLS symbol is accessed using IE at least once,
1537 there is no point to use dynamic model for it. */
1538 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1539 && (old_tls_type != GOT_TLS_GD
1540 || tls_type != GOT_TLS_IE))
1541 {
1542 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
1543 tls_type = old_tls_type;
1544 else
1545 {
1546 _bfd_error_handler
1547 /* xgettext:c-format */
1548 (_("%pB: `%s' accessed both as normal and thread local symbol"),
1549 abfd, h ? h->root.root.string : "<local>");
1550 return false;
1551 }
1552 }
1553
1554 if (old_tls_type != tls_type)
1555 {
1556 if (h != NULL)
1557 tilepro_elf_hash_entry (h)->tls_type = tls_type;
1558 else
1559 _bfd_tilepro_elf_local_got_tls_type (abfd) [r_symndx] =
1560 tls_type;
1561 }
1562 }
1563
1564 if (htab->sgot == NULL)
1565 {
1566 if (!tilepro_elf_create_got_section (htab->dynobj, info))
1567 return false;
1568 }
1569 break;
1570
1571 case R_TILEPRO_TLS_GD_CALL:
1572 if (!bfd_link_executable (info))
1573 {
1574 /* These are basically R_TILEPRO_JOFFLONG_X1_PLT relocs
1575 against __tls_get_addr. */
1576 struct bfd_link_hash_entry *bh = NULL;
1577 if (! _bfd_generic_link_add_one_symbol (info, abfd,
1578 "__tls_get_addr", 0,
1579 bfd_und_section_ptr, 0,
1580 NULL, false, false,
1581 &bh))
1582 return false;
1583 h = (struct elf_link_hash_entry *) bh;
1584 }
1585 else
1586 break;
1587 /* Fall through */
1588
1589 case R_TILEPRO_JOFFLONG_X1_PLT:
1590 /* This symbol requires a procedure linkage table entry. We
1591 actually build the entry in adjust_dynamic_symbol,
1592 because this might be a case of linking PIC code without
1593 linking in any dynamic objects, in which case we don't
1594 need to generate a procedure linkage table after all. */
1595
1596 if (h != NULL)
1597 {
1598 h->needs_plt = 1;
1599 h->plt.refcount += 1;
1600 }
1601 break;
1602
1603 case R_TILEPRO_32_PCREL:
1604 case R_TILEPRO_16_PCREL:
1605 case R_TILEPRO_8_PCREL:
1606 case R_TILEPRO_IMM16_X0_PCREL:
1607 case R_TILEPRO_IMM16_X1_PCREL:
1608 case R_TILEPRO_IMM16_X0_LO_PCREL:
1609 case R_TILEPRO_IMM16_X1_LO_PCREL:
1610 case R_TILEPRO_IMM16_X0_HI_PCREL:
1611 case R_TILEPRO_IMM16_X1_HI_PCREL:
1612 case R_TILEPRO_IMM16_X0_HA_PCREL:
1613 case R_TILEPRO_IMM16_X1_HA_PCREL:
1614 if (h != NULL)
1615 h->non_got_ref = 1;
1616
1617 if (h != NULL
1618 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1619 break;
1620 /* Fall through. */
1621
1622 case R_TILEPRO_32:
1623 case R_TILEPRO_16:
1624 case R_TILEPRO_8:
1625 case R_TILEPRO_LO16:
1626 case R_TILEPRO_HI16:
1627 case R_TILEPRO_HA16:
1628 case R_TILEPRO_COPY:
1629 case R_TILEPRO_GLOB_DAT:
1630 case R_TILEPRO_JMP_SLOT:
1631 case R_TILEPRO_RELATIVE:
1632 case R_TILEPRO_BROFF_X1:
1633 case R_TILEPRO_JOFFLONG_X1:
1634 case R_TILEPRO_IMM8_X0:
1635 case R_TILEPRO_IMM8_Y0:
1636 case R_TILEPRO_IMM8_X1:
1637 case R_TILEPRO_IMM8_Y1:
1638 case R_TILEPRO_DEST_IMM8_X1:
1639 case R_TILEPRO_MT_IMM15_X1:
1640 case R_TILEPRO_MF_IMM15_X1:
1641 case R_TILEPRO_IMM16_X0:
1642 case R_TILEPRO_IMM16_X1:
1643 case R_TILEPRO_IMM16_X0_LO:
1644 case R_TILEPRO_IMM16_X1_LO:
1645 case R_TILEPRO_IMM16_X0_HI:
1646 case R_TILEPRO_IMM16_X1_HI:
1647 case R_TILEPRO_IMM16_X0_HA:
1648 case R_TILEPRO_IMM16_X1_HA:
1649 case R_TILEPRO_MMSTART_X0:
1650 case R_TILEPRO_MMEND_X0:
1651 case R_TILEPRO_MMSTART_X1:
1652 case R_TILEPRO_MMEND_X1:
1653 case R_TILEPRO_SHAMT_X0:
1654 case R_TILEPRO_SHAMT_X1:
1655 case R_TILEPRO_SHAMT_Y0:
1656 case R_TILEPRO_SHAMT_Y1:
1657 if (h != NULL)
1658 h->non_got_ref = 1;
1659
1660 r_tilepro_plt32:
1661 if (h != NULL && !bfd_link_pic (info))
1662 {
1663 /* We may need a .plt entry if the function this reloc
1664 refers to is in a shared lib. */
1665 h->plt.refcount += 1;
1666 }
1667
1668 /* If we are creating a shared library, and this is a reloc
1669 against a global symbol, or a non PC relative reloc
1670 against a local symbol, then we need to copy the reloc
1671 into the shared library. However, if we are linking with
1672 -Bsymbolic, we do not need to copy a reloc against a
1673 global symbol which is defined in an object we are
1674 including in the link (i.e., DEF_REGULAR is set). At
1675 this point we have not seen all the input files, so it is
1676 possible that DEF_REGULAR is not set now but will be set
1677 later (it is never cleared). In case of a weak definition,
1678 DEF_REGULAR may be cleared later by a strong definition in
1679 a shared library. We account for that possibility below by
1680 storing information in the relocs_copied field of the hash
1681 table entry. A similar situation occurs when creating
1682 shared libraries and symbol visibility changes render the
1683 symbol local.
1684
1685 If on the other hand, we are creating an executable, we
1686 may need to keep relocations for symbols satisfied by a
1687 dynamic library if we manage to avoid copy relocs for the
1688 symbol. */
1689 if ((bfd_link_pic (info)
1690 && (sec->flags & SEC_ALLOC) != 0
1691 && (! tilepro_elf_howto_table[r_type].pc_relative
1692 || (h != NULL
1693 && (! info->symbolic
1694 || h->root.type == bfd_link_hash_defweak
1695 || !h->def_regular))))
1696 || (!bfd_link_pic (info)
1697 && (sec->flags & SEC_ALLOC) != 0
1698 && h != NULL
1699 && (h->root.type == bfd_link_hash_defweak
1700 || !h->def_regular)))
1701 {
1702 struct elf_dyn_relocs *p;
1703 struct elf_dyn_relocs **head;
1704
1705 /* When creating a shared object, we must copy these
1706 relocs into the output file. We create a reloc
1707 section in dynobj and make room for the reloc. */
1708 if (sreloc == NULL)
1709 {
1710 sreloc = _bfd_elf_make_dynamic_reloc_section
1711 (sec, htab->dynobj, 2, abfd, /*rela?*/ true);
1712
1713 if (sreloc == NULL)
1714 return false;
1715 }
1716
1717 /* If this is a global symbol, we count the number of
1718 relocations we need for this symbol. */
1719 if (h != NULL)
1720 head = &h->dyn_relocs;
1721 else
1722 {
1723 /* Track dynamic relocs needed for local syms too.
1724 We really need local syms available to do this
1725 easily. Oh well. */
1726
1727 asection *s;
1728 void *vpp;
1729 Elf_Internal_Sym *isym;
1730
1731 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1732 abfd, r_symndx);
1733 if (isym == NULL)
1734 return false;
1735
1736 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1737 if (s == NULL)
1738 s = sec;
1739
1740 vpp = &elf_section_data (s)->local_dynrel;
1741 head = (struct elf_dyn_relocs **) vpp;
1742 }
1743
1744 p = *head;
1745 if (p == NULL || p->sec != sec)
1746 {
1747 size_t amt = sizeof *p;
1748 p = ((struct elf_dyn_relocs *)
1749 bfd_alloc (htab->dynobj, amt));
1750 if (p == NULL)
1751 return false;
1752 p->next = *head;
1753 *head = p;
1754 p->sec = sec;
1755 p->count = 0;
1756 p->pc_count = 0;
1757 }
1758
1759 p->count += 1;
1760 if (tilepro_elf_howto_table[r_type].pc_relative)
1761 p->pc_count += 1;
1762 }
1763
1764 break;
1765
1766 case R_TILEPRO_GNU_VTINHERIT:
1767 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1768 return false;
1769 break;
1770
1771 case R_TILEPRO_GNU_VTENTRY:
1772 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1773 return false;
1774 break;
1775
1776 default:
1777 break;
1778 }
1779 }
1780
1781 return true;
1782 }
1783
1784 \f
1785 static asection *
1786 tilepro_elf_gc_mark_hook (asection *sec,
1787 struct bfd_link_info *info,
1788 Elf_Internal_Rela *rel,
1789 struct elf_link_hash_entry *h,
1790 Elf_Internal_Sym *sym)
1791 {
1792 if (h != NULL)
1793 {
1794 switch (ELF32_R_TYPE (rel->r_info))
1795 {
1796 case R_TILEPRO_GNU_VTINHERIT:
1797 case R_TILEPRO_GNU_VTENTRY:
1798 return NULL;
1799 }
1800 }
1801
1802 /* FIXME: The test here, in check_relocs and in relocate_section
1803 dealing with TLS optimization, ought to be !bfd_link_executable (info). */
1804 if (bfd_link_pic (info))
1805 {
1806 struct bfd_link_hash_entry *bh;
1807
1808 switch (ELF32_R_TYPE (rel->r_info))
1809 {
1810 case R_TILEPRO_TLS_GD_CALL:
1811 /* This reloc implicitly references __tls_get_addr. We know
1812 another reloc will reference the same symbol as the one
1813 on this reloc, so the real symbol and section will be
1814 gc marked when processing the other reloc. That lets
1815 us handle __tls_get_addr here. */
1816 bh = NULL;
1817 if (! _bfd_generic_link_add_one_symbol (info, sec->owner,
1818 "__tls_get_addr", 0,
1819 bfd_und_section_ptr,
1820 0, NULL, false,
1821 false, &bh))
1822 return NULL;
1823 h = (struct elf_link_hash_entry *) bh;
1824 BFD_ASSERT (h != NULL);
1825 h->mark = 1;
1826 if (h->is_weakalias)
1827 weakdef (h)->mark = 1;
1828 sym = NULL;
1829 }
1830 }
1831
1832 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1833 }
1834
1835 /* Adjust a symbol defined by a dynamic object and referenced by a
1836 regular object. The current definition is in some section of the
1837 dynamic object, but we're not including those sections. We have to
1838 change the definition to something the rest of the link can
1839 understand. */
1840
1841 static bool
1842 tilepro_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
1843 struct elf_link_hash_entry *h)
1844 {
1845 struct elf_link_hash_table *htab;
1846 asection *s, *srel;
1847
1848 htab = tilepro_elf_hash_table (info);
1849 BFD_ASSERT (htab != NULL);
1850
1851 /* Make sure we know what is going on here. */
1852 BFD_ASSERT (htab->dynobj != NULL
1853 && (h->needs_plt
1854 || h->is_weakalias
1855 || (h->def_dynamic
1856 && h->ref_regular
1857 && !h->def_regular)));
1858
1859 /* If this is a function, put it in the procedure linkage table. We
1860 will fill in the contents of the procedure linkage table later
1861 (although we could actually do it here). */
1862 if (h->type == STT_FUNC || h->needs_plt)
1863 {
1864 if (h->plt.refcount <= 0
1865 || SYMBOL_CALLS_LOCAL (info, h)
1866 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1867 && h->root.type == bfd_link_hash_undefweak))
1868 {
1869 /* This case can occur if we saw a R_TILEPRO_JOFFLONG_X1_PLT
1870 reloc in an input file, but the symbol was never referred
1871 to by a dynamic object, or if all references were garbage
1872 collected. In such a case, we don't actually need to build
1873 a procedure linkage table, and we can just do a
1874 R_TILEPRO_JOFFLONG_X1 relocation instead. */
1875 h->plt.offset = (bfd_vma) -1;
1876 h->needs_plt = 0;
1877 }
1878
1879 return true;
1880 }
1881 else
1882 h->plt.offset = (bfd_vma) -1;
1883
1884 /* If this is a weak symbol, and there is a real definition, the
1885 processor independent code will have arranged for us to see the
1886 real definition first, and we can just use the same value. */
1887 if (h->is_weakalias)
1888 {
1889 struct elf_link_hash_entry *def = weakdef (h);
1890 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
1891 h->root.u.def.section = def->root.u.def.section;
1892 h->root.u.def.value = def->root.u.def.value;
1893 return true;
1894 }
1895
1896 /* This is a reference to a symbol defined by a dynamic object which
1897 is not a function. */
1898
1899 /* If we are creating a shared library, we must presume that the
1900 only references to the symbol are via the global offset table.
1901 For such cases we need not do anything here; the relocations will
1902 be handled correctly by relocate_section. */
1903 if (bfd_link_pic (info))
1904 return true;
1905
1906 /* If there are no references to this symbol that do not use the
1907 GOT, we don't need to generate a copy reloc. */
1908 if (!h->non_got_ref)
1909 return true;
1910
1911 /* If -z nocopyreloc was given, we won't generate them either. */
1912 if (info->nocopyreloc)
1913 {
1914 h->non_got_ref = 0;
1915 return true;
1916 }
1917
1918 /* If we don't find any dynamic relocs in read-only sections, then
1919 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1920 if (!_bfd_elf_readonly_dynrelocs (h))
1921 {
1922 h->non_got_ref = 0;
1923 return true;
1924 }
1925
1926 /* We must allocate the symbol in our .dynbss section, which will
1927 become part of the .bss section of the executable. There will be
1928 an entry for this symbol in the .dynsym section. The dynamic
1929 object will contain position independent code, so all references
1930 from the dynamic object to this symbol will go through the global
1931 offset table. The dynamic linker will use the .dynsym entry to
1932 determine the address it must put in the global offset table, so
1933 both the dynamic object and the regular object will refer to the
1934 same memory location for the variable. */
1935
1936 /* We must generate a R_TILEPRO_COPY reloc to tell the dynamic linker
1937 to copy the initial value out of the dynamic object and into the
1938 runtime process image. We need to remember the offset into the
1939 .rel.bss section we are going to use. */
1940 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
1941 {
1942 s = htab->sdynrelro;
1943 srel = htab->sreldynrelro;
1944 }
1945 else
1946 {
1947 s = htab->sdynbss;
1948 srel = htab->srelbss;
1949 }
1950 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
1951 {
1952 srel->size += TILEPRO_ELF_RELA_BYTES;
1953 h->needs_copy = 1;
1954 }
1955
1956 return _bfd_elf_adjust_dynamic_copy (info, h, s);
1957 }
1958
1959 /* Allocate space in .plt, .got and associated reloc sections for
1960 dynamic relocs. */
1961
1962 static bool
1963 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
1964 {
1965 struct bfd_link_info *info;
1966 struct elf_link_hash_table *htab;
1967 struct elf_dyn_relocs *p;
1968
1969 if (h->root.type == bfd_link_hash_indirect)
1970 return true;
1971
1972 info = (struct bfd_link_info *) inf;
1973 htab = tilepro_elf_hash_table (info);
1974 BFD_ASSERT (htab != NULL);
1975
1976 if (htab->dynamic_sections_created
1977 && h->plt.refcount > 0)
1978 {
1979 /* Make sure this symbol is output as a dynamic symbol.
1980 Undefined weak syms won't yet be marked as dynamic. */
1981 if (h->dynindx == -1
1982 && !h->forced_local)
1983 {
1984 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1985 return false;
1986 }
1987
1988 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
1989 {
1990 asection *s = htab->splt;
1991
1992 /* Allocate room for the header. */
1993 if (s->size == 0)
1994 {
1995 s->size = PLT_ENTRY_SIZE;
1996 }
1997
1998 h->plt.offset = s->size;
1999
2000 /* If this symbol is not defined in a regular file, and we are
2001 not generating a shared library, then set the symbol to this
2002 location in the .plt. This is required to make function
2003 pointers compare as equal between the normal executable and
2004 the shared library. */
2005 if (! bfd_link_pic (info)
2006 && !h->def_regular)
2007 {
2008 h->root.u.def.section = s;
2009 h->root.u.def.value = h->plt.offset;
2010 }
2011
2012 /* Make room for this entry. */
2013 s->size += PLT_ENTRY_SIZE;
2014
2015 /* We also need to make an entry in the .got.plt section. */
2016 htab->sgotplt->size += GOT_ENTRY_SIZE;
2017
2018 /* We also need to make an entry in the .rela.plt section. */
2019 htab->srelplt->size += TILEPRO_ELF_RELA_BYTES;
2020 }
2021 else
2022 {
2023 h->plt.offset = (bfd_vma) -1;
2024 h->needs_plt = 0;
2025 }
2026 }
2027 else
2028 {
2029 h->plt.offset = (bfd_vma) -1;
2030 h->needs_plt = 0;
2031 }
2032
2033 /* If a TLS_IE symbol is now local to the binary, make it a TLS_LE
2034 requiring no TLS entry. */
2035 if (h->got.refcount > 0
2036 && bfd_link_executable (info)
2037 && h->dynindx == -1
2038 && tilepro_elf_hash_entry(h)->tls_type == GOT_TLS_IE)
2039 h->got.offset = (bfd_vma) -1;
2040 else if (h->got.refcount > 0)
2041 {
2042 asection *s;
2043 bool dyn;
2044 int tls_type = tilepro_elf_hash_entry(h)->tls_type;
2045
2046 /* Make sure this symbol is output as a dynamic symbol.
2047 Undefined weak syms won't yet be marked as dynamic. */
2048 if (h->dynindx == -1
2049 && !h->forced_local)
2050 {
2051 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2052 return false;
2053 }
2054
2055 s = htab->sgot;
2056 h->got.offset = s->size;
2057 s->size += TILEPRO_BYTES_PER_WORD;
2058 /* R_TILEPRO_IMM16_Xn_TLS_GD entries need 2 consecutive GOT slots. */
2059 if (tls_type == GOT_TLS_GD)
2060 s->size += TILEPRO_BYTES_PER_WORD;
2061 dyn = htab->dynamic_sections_created;
2062 /* R_TILEPRO_IMM16_Xn_TLS_IE_xxx needs one dynamic relocation,
2063 R_TILEPRO_IMM16_Xn_TLS_GD_xxx needs two if local symbol and two if
2064 global. */
2065 if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE)
2066 htab->srelgot->size += 2 * TILEPRO_ELF_RELA_BYTES;
2067 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2068 bfd_link_pic (info),
2069 h))
2070 htab->srelgot->size += TILEPRO_ELF_RELA_BYTES;
2071 }
2072 else
2073 h->got.offset = (bfd_vma) -1;
2074
2075 if (h->dyn_relocs == NULL)
2076 return true;
2077
2078 /* In the shared -Bsymbolic case, discard space allocated for
2079 dynamic pc-relative relocs against symbols which turn out to be
2080 defined in regular objects. For the normal shared case, discard
2081 space for pc-relative relocs that have become local due to symbol
2082 visibility changes. */
2083
2084 if (bfd_link_pic (info))
2085 {
2086 if (SYMBOL_CALLS_LOCAL (info, h))
2087 {
2088 struct elf_dyn_relocs **pp;
2089
2090 for (pp = &h->dyn_relocs; (p = *pp) != NULL; )
2091 {
2092 p->count -= p->pc_count;
2093 p->pc_count = 0;
2094 if (p->count == 0)
2095 *pp = p->next;
2096 else
2097 pp = &p->next;
2098 }
2099 }
2100
2101 /* Also discard relocs on undefined weak syms with non-default
2102 visibility. */
2103 if (h->dyn_relocs != NULL
2104 && h->root.type == bfd_link_hash_undefweak)
2105 {
2106 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2107 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
2108 h->dyn_relocs = NULL;
2109
2110 /* Make sure undefined weak symbols are output as a dynamic
2111 symbol in PIEs. */
2112 else if (h->dynindx == -1
2113 && !h->forced_local)
2114 {
2115 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2116 return false;
2117 }
2118 }
2119 }
2120 else
2121 {
2122 /* For the non-shared case, discard space for relocs against
2123 symbols which turn out to need copy relocs or are not
2124 dynamic. */
2125
2126 if (!h->non_got_ref
2127 && ((h->def_dynamic
2128 && !h->def_regular)
2129 || (htab->dynamic_sections_created
2130 && (h->root.type == bfd_link_hash_undefweak
2131 || h->root.type == bfd_link_hash_undefined))))
2132 {
2133 /* Make sure this symbol is output as a dynamic symbol.
2134 Undefined weak syms won't yet be marked as dynamic. */
2135 if (h->dynindx == -1
2136 && !h->forced_local)
2137 {
2138 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2139 return false;
2140 }
2141
2142 /* If that succeeded, we know we'll be keeping all the
2143 relocs. */
2144 if (h->dynindx != -1)
2145 goto keep;
2146 }
2147
2148 h->dyn_relocs = NULL;
2149
2150 keep: ;
2151 }
2152
2153 /* Finally, allocate space. */
2154 for (p = h->dyn_relocs; p != NULL; p = p->next)
2155 {
2156 asection *sreloc = elf_section_data (p->sec)->sreloc;
2157 sreloc->size += p->count * TILEPRO_ELF_RELA_BYTES;
2158 }
2159
2160 return true;
2161 }
2162
2163 /* Return true if the dynamic symbol for a given section should be
2164 omitted when creating a shared library. */
2165
2166 static bool
2167 tilepro_elf_omit_section_dynsym (bfd *output_bfd,
2168 struct bfd_link_info *info,
2169 asection *p)
2170 {
2171 /* We keep the .got section symbol so that explicit relocations
2172 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode
2173 can be turned into relocations against the .got symbol. */
2174 if (strcmp (p->name, ".got") == 0)
2175 return false;
2176
2177 return _bfd_elf_omit_section_dynsym_default (output_bfd, info, p);
2178 }
2179
2180 /* Set the sizes of the dynamic sections. */
2181
2182 #define ELF32_DYNAMIC_INTERPRETER "/lib/ld.so.1"
2183
2184 static bool
2185 tilepro_elf_late_size_sections (bfd *output_bfd,
2186 struct bfd_link_info *info)
2187 {
2188 struct elf_link_hash_table *htab;
2189 bfd *dynobj;
2190 asection *s;
2191 bfd *ibfd;
2192
2193 htab = tilepro_elf_hash_table (info);
2194 BFD_ASSERT (htab != NULL);
2195 dynobj = htab->dynobj;
2196 if (dynobj == NULL)
2197 return true;
2198
2199 if (elf_hash_table (info)->dynamic_sections_created)
2200 {
2201 /* Set the contents of the .interp section to the interpreter. */
2202 if (bfd_link_executable (info) && !info->nointerp)
2203 {
2204 s = bfd_get_linker_section (dynobj, ".interp");
2205 BFD_ASSERT (s != NULL);
2206 s->size = sizeof ELF32_DYNAMIC_INTERPRETER;
2207 s->contents = (unsigned char *) ELF32_DYNAMIC_INTERPRETER;
2208 }
2209 }
2210
2211 /* Set up .got offsets for local syms, and space for local dynamic
2212 relocs. */
2213 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2214 {
2215 bfd_signed_vma *local_got;
2216 bfd_signed_vma *end_local_got;
2217 char *local_tls_type;
2218 bfd_size_type locsymcount;
2219 Elf_Internal_Shdr *symtab_hdr;
2220 asection *srel;
2221
2222 if (! is_tilepro_elf (ibfd))
2223 continue;
2224
2225 for (s = ibfd->sections; s != NULL; s = s->next)
2226 {
2227 struct elf_dyn_relocs *p;
2228
2229 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2230 {
2231 if (!bfd_is_abs_section (p->sec)
2232 && bfd_is_abs_section (p->sec->output_section))
2233 {
2234 /* Input section has been discarded, either because
2235 it is a copy of a linkonce section or due to
2236 linker script /DISCARD/, so we'll be discarding
2237 the relocs too. */
2238 }
2239 else if (p->count != 0)
2240 {
2241 srel = elf_section_data (p->sec)->sreloc;
2242 srel->size += p->count * TILEPRO_ELF_RELA_BYTES;
2243 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2244 {
2245 info->flags |= DF_TEXTREL;
2246
2247 info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
2248 p->sec->owner, p->sec);
2249 }
2250 }
2251 }
2252 }
2253
2254 local_got = elf_local_got_refcounts (ibfd);
2255 if (!local_got)
2256 continue;
2257
2258 symtab_hdr = &elf_symtab_hdr (ibfd);
2259 locsymcount = symtab_hdr->sh_info;
2260 end_local_got = local_got + locsymcount;
2261 local_tls_type = _bfd_tilepro_elf_local_got_tls_type (ibfd);
2262 s = htab->sgot;
2263 srel = htab->srelgot;
2264 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2265 {
2266 if (*local_got > 0)
2267 {
2268 *local_got = s->size;
2269 s->size += TILEPRO_BYTES_PER_WORD;
2270 if (*local_tls_type == GOT_TLS_GD)
2271 s->size += TILEPRO_BYTES_PER_WORD;
2272 if (bfd_link_pic (info)
2273 || *local_tls_type == GOT_TLS_GD
2274 || *local_tls_type == GOT_TLS_IE)
2275 srel->size += TILEPRO_ELF_RELA_BYTES;
2276 }
2277 else
2278 *local_got = (bfd_vma) -1;
2279 }
2280 }
2281
2282 /* Allocate global sym .plt and .got entries, and space for global
2283 sym dynamic relocs. */
2284 elf_link_hash_traverse (htab, allocate_dynrelocs, info);
2285
2286 if (elf_hash_table (info)->dynamic_sections_created)
2287 {
2288 /* If the .got section is more than 0x8000 bytes, we add
2289 0x8000 to the value of _GLOBAL_OFFSET_TABLE_, so that 16
2290 bit relocations have a greater chance of working. */
2291 if (htab->sgot->size >= 0x8000
2292 && elf_hash_table (info)->hgot->root.u.def.value == 0)
2293 elf_hash_table (info)->hgot->root.u.def.value = 0x8000;
2294 }
2295
2296 if (htab->sgotplt)
2297 {
2298 struct elf_link_hash_entry *got;
2299 got = elf_link_hash_lookup (elf_hash_table (info),
2300 "_GLOBAL_OFFSET_TABLE_",
2301 false, false, false);
2302
2303 /* Don't allocate .got.plt section if there are no GOT nor PLT
2304 entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */
2305 if ((got == NULL
2306 || !got->ref_regular_nonweak)
2307 && (htab->sgotplt->size
2308 == GOTPLT_HEADER_SIZE)
2309 && (htab->splt == NULL
2310 || htab->splt->size == 0)
2311 && (htab->sgot == NULL
2312 || (htab->sgot->size
2313 == get_elf_backend_data (output_bfd)->got_header_size)))
2314 htab->sgotplt->size = 0;
2315 }
2316
2317 /* The check_relocs and adjust_dynamic_symbol entry points have
2318 determined the sizes of the various dynamic sections. Allocate
2319 memory for them. */
2320 for (s = dynobj->sections; s != NULL; s = s->next)
2321 {
2322 if ((s->flags & SEC_LINKER_CREATED) == 0)
2323 continue;
2324
2325 if (s == htab->splt
2326 || s == htab->sgot
2327 || s == htab->sgotplt
2328 || s == htab->sdynbss
2329 || s == htab->sdynrelro)
2330 {
2331 /* Strip this section if we don't need it; see the
2332 comment below. */
2333 }
2334 else if (startswith (s->name, ".rela"))
2335 {
2336 if (s->size != 0)
2337 {
2338 /* We use the reloc_count field as a counter if we need
2339 to copy relocs into the output file. */
2340 s->reloc_count = 0;
2341 }
2342 }
2343 else
2344 {
2345 /* It's not one of our sections. */
2346 continue;
2347 }
2348
2349 if (s->size == 0)
2350 {
2351 /* If we don't need this section, strip it from the
2352 output file. This is mostly to handle .rela.bss and
2353 .rela.plt. We must create both sections in
2354 create_dynamic_sections, because they must be created
2355 before the linker maps input sections to output
2356 sections. The linker does that before
2357 adjust_dynamic_symbol is called, and it is that
2358 function which decides whether anything needs to go
2359 into these sections. */
2360 s->flags |= SEC_EXCLUDE;
2361 continue;
2362 }
2363
2364 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2365 continue;
2366
2367 /* Allocate memory for the section contents. Zero the memory
2368 for the benefit of .rela.plt, which has 4 unused entries
2369 at the beginning, and we don't want garbage. */
2370 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2371 if (s->contents == NULL)
2372 return false;
2373 }
2374
2375 return _bfd_elf_add_dynamic_tags (output_bfd, info, true);
2376 }
2377 \f
2378 /* Return the base VMA address which should be subtracted from real addresses
2379 when resolving @dtpoff relocation.
2380 This is PT_TLS segment p_vaddr. */
2381
2382 static bfd_vma
2383 dtpoff_base (struct bfd_link_info *info)
2384 {
2385 /* If tls_sec is NULL, we should have signalled an error already. */
2386 if (elf_hash_table (info)->tls_sec == NULL)
2387 return 0;
2388 return elf_hash_table (info)->tls_sec->vma;
2389 }
2390
2391 /* Return the relocation value for R_TILEPRO_TLS_TPOFF32. */
2392
2393 static bfd_vma
2394 tpoff (struct bfd_link_info *info, bfd_vma address)
2395 {
2396 struct elf_link_hash_table *htab = elf_hash_table (info);
2397
2398 /* If tls_sec is NULL, we should have signalled an error already. */
2399 if (htab->tls_sec == NULL)
2400 return 0;
2401
2402 return (address - htab->tls_sec->vma);
2403 }
2404
2405 /* Replace the MASK bits in ADDR with those in INSN, for the next
2406 TILEPRO_BUNDLE_SIZE_IN_BYTES bytes. */
2407
2408 static void
2409 tilepro_replace_insn (bfd_byte *addr, const bfd_byte *mask,
2410 const bfd_byte *insn)
2411 {
2412 int i;
2413 for (i = 0; i < TILEPRO_BUNDLE_SIZE_IN_BYTES; i++)
2414 {
2415 addr[i] = (addr[i] & ~mask[i]) | (insn[i] & mask[i]);
2416 }
2417 }
2418
2419 /* Mask to extract the bits corresponding to an instruction in a
2420 specific pipe of a bundle. */
2421 static const bfd_byte insn_mask_X1[] = {
2422 0x00, 0x00, 0x00, 0x80, 0xff, 0xff, 0xff, 0x7f
2423 };
2424
2425 /* Mask to extract the bits corresponding to an instruction in a
2426 specific pipe of a bundle, minus the destination operand and the
2427 first source operand. */
2428 static const bfd_byte insn_mask_X0_no_dest_no_srca[] = {
2429 0x00, 0xf0, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00
2430 };
2431
2432 static const bfd_byte insn_mask_X1_no_dest_no_srca[] = {
2433 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0x7f
2434 };
2435
2436 static const bfd_byte insn_mask_Y0_no_dest_no_srca[] = {
2437 0x00, 0xf0, 0x0f, 0x78, 0x00, 0x00, 0x00, 0x00
2438 };
2439
2440 static const bfd_byte insn_mask_Y1_no_dest_no_srca[] = {
2441 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x07, 0x78
2442 };
2443
2444 /* Mask to extract the first source operand of an instruction. */
2445 static const bfd_byte srca_mask_X0[] = {
2446 0xc0, 0x0f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
2447 };
2448
2449 static const bfd_byte srca_mask_X1[] = {
2450 0x00, 0x00, 0x00, 0x00, 0xe0, 0x07, 0x00, 0x00
2451 };
2452
2453 /* Various instructions synthesized to support tls references. */
2454
2455 /* move r0, r0 in the X1 pipe, used for tls le. */
2456 static const bfd_byte insn_tls_le_move_X1[] = {
2457 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x33, 0x08
2458 };
2459
2460 /* move r0, zero in the X0 and X1 pipe, used for tls le. */
2461 static const bfd_byte insn_tls_le_move_zero_X0X1[] = {
2462 0xc0, 0xff, 0xcf, 0x00, 0xe0, 0xff, 0x33, 0x08
2463 };
2464
2465 /* lw r0, r0 in the X1 pipe, used for tls ie. */
2466 static const bfd_byte insn_tls_ie_lw_X1[] = {
2467 0x00, 0x00, 0x00, 0x00, 0x00, 0x70, 0x0b, 0x40
2468 };
2469
2470 /* add r0, r0, tp in various pipes, used for tls ie. */
2471 static const bfd_byte insn_tls_ie_add_X0X1[] = {
2472 0x00, 0x50, 0x0f, 0x00, 0x00, 0xa8, 0x07, 0x08
2473 };
2474 static const bfd_byte insn_tls_ie_add_Y0Y1[] = {
2475 0x00, 0x50, 0x03, 0x08, 0x00, 0xa8, 0x01, 0x8c
2476 };
2477
2478 /* move r0, r0 in various pipes, used for tls gd. */
2479 static const bfd_byte insn_tls_gd_add_X0X1[] = {
2480 0x00, 0xf0, 0xcf, 0x00, 0x00, 0xf8, 0x33, 0x08
2481 };
2482 static const bfd_byte insn_tls_gd_add_Y0Y1[] = {
2483 0x00, 0xf0, 0x0b, 0x18, 0x00, 0xf8, 0x05, 0x9c
2484 };
2485
2486 /* Relocate an TILEPRO ELF section.
2487
2488 The RELOCATE_SECTION function is called by the new ELF backend linker
2489 to handle the relocations for a section.
2490
2491 The relocs are always passed as Rela structures.
2492
2493 This function is responsible for adjusting the section contents as
2494 necessary, and (if generating a relocatable output file) adjusting
2495 the reloc addend as necessary.
2496
2497 This function does not have to worry about setting the reloc
2498 address or the reloc symbol index.
2499
2500 LOCAL_SYMS is a pointer to the swapped in local symbols.
2501
2502 LOCAL_SECTIONS is an array giving the section in the input file
2503 corresponding to the st_shndx field of each local symbol.
2504
2505 The global hash table entry for the global symbols can be found
2506 via elf_sym_hashes (input_bfd).
2507
2508 When generating relocatable output, this function must handle
2509 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2510 going to be the section symbol corresponding to the output
2511 section, which means that the addend must be adjusted
2512 accordingly. */
2513
2514 static int
2515 tilepro_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
2516 bfd *input_bfd, asection *input_section,
2517 bfd_byte *contents, Elf_Internal_Rela *relocs,
2518 Elf_Internal_Sym *local_syms,
2519 asection **local_sections)
2520 {
2521 struct elf_link_hash_table *htab;
2522 Elf_Internal_Shdr *symtab_hdr;
2523 struct elf_link_hash_entry **sym_hashes;
2524 bfd_vma *local_got_offsets;
2525 bfd_vma got_base;
2526 asection *sreloc;
2527 Elf_Internal_Rela *rel;
2528 Elf_Internal_Rela *relend;
2529 int num_relocs;
2530
2531 htab = tilepro_elf_hash_table (info);
2532 BFD_ASSERT (htab != NULL);
2533 symtab_hdr = &elf_symtab_hdr (input_bfd);
2534 sym_hashes = elf_sym_hashes (input_bfd);
2535 local_got_offsets = elf_local_got_offsets (input_bfd);
2536
2537 if (elf_hash_table (info)->hgot == NULL)
2538 got_base = 0;
2539 else
2540 got_base = elf_hash_table (info)->hgot->root.u.def.value;
2541
2542 sreloc = elf_section_data (input_section)->sreloc;
2543
2544 rel = relocs;
2545 num_relocs = input_section->reloc_count;
2546 relend = relocs + num_relocs;
2547 for (; rel < relend; rel++)
2548 {
2549 int r_type, tls_type;
2550 bool is_tls_iele, is_tls_le;
2551 reloc_howto_type *howto;
2552 unsigned long r_symndx;
2553 struct elf_link_hash_entry *h;
2554 Elf_Internal_Sym *sym;
2555 tilepro_create_func create_func;
2556 asection *sec;
2557 bfd_vma relocation;
2558 bfd_reloc_status_type r;
2559 const char *name;
2560 bfd_vma off;
2561 bool is_plt = false;
2562 bool resolved_to_zero;
2563 bool unresolved_reloc;
2564
2565 r_type = ELF32_R_TYPE (rel->r_info);
2566 if (r_type == R_TILEPRO_GNU_VTINHERIT
2567 || r_type == R_TILEPRO_GNU_VTENTRY)
2568 continue;
2569
2570 if ((unsigned int)r_type >= NELEMS(tilepro_elf_howto_table))
2571 return _bfd_unrecognized_reloc (input_bfd, input_section, r_type);
2572
2573 howto = tilepro_elf_howto_table + r_type;
2574
2575 /* This is a final link. */
2576 r_symndx = ELF32_R_SYM (rel->r_info);
2577 h = NULL;
2578 sym = NULL;
2579 sec = NULL;
2580 unresolved_reloc = false;
2581 if (r_symndx < symtab_hdr->sh_info)
2582 {
2583 sym = local_syms + r_symndx;
2584 sec = local_sections[r_symndx];
2585 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2586 }
2587 else
2588 {
2589 bool warned ATTRIBUTE_UNUSED;
2590 bool ignored ATTRIBUTE_UNUSED;
2591
2592 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2593 r_symndx, symtab_hdr, sym_hashes,
2594 h, sec, relocation,
2595 unresolved_reloc, warned, ignored);
2596 if (warned)
2597 {
2598 /* To avoid generating warning messages about truncated
2599 relocations, set the relocation's address to be the same as
2600 the start of this section. */
2601 if (input_section->output_section != NULL)
2602 relocation = input_section->output_section->vma;
2603 else
2604 relocation = 0;
2605 }
2606 }
2607
2608 if (sec != NULL && discarded_section (sec))
2609 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2610 rel, 1, relend, howto, 0, contents);
2611
2612 if (bfd_link_relocatable (info))
2613 continue;
2614
2615 if (h != NULL)
2616 name = h->root.root.string;
2617 else
2618 {
2619 name = (bfd_elf_string_from_elf_section
2620 (input_bfd, symtab_hdr->sh_link, sym->st_name));
2621 if (name == NULL || *name == '\0')
2622 name = bfd_section_name (sec);
2623 }
2624
2625 switch (r_type)
2626 {
2627 case R_TILEPRO_TLS_GD_CALL:
2628 case R_TILEPRO_IMM8_X0_TLS_GD_ADD:
2629 case R_TILEPRO_IMM8_Y0_TLS_GD_ADD:
2630 case R_TILEPRO_IMM8_X1_TLS_GD_ADD:
2631 case R_TILEPRO_IMM8_Y1_TLS_GD_ADD:
2632 case R_TILEPRO_IMM16_X0_TLS_GD_HA:
2633 case R_TILEPRO_IMM16_X1_TLS_GD_HA:
2634 case R_TILEPRO_IMM16_X0_TLS_IE_HA:
2635 case R_TILEPRO_IMM16_X1_TLS_IE_HA:
2636 tls_type = GOT_UNKNOWN;
2637 if (h == NULL && local_got_offsets)
2638 tls_type =
2639 _bfd_tilepro_elf_local_got_tls_type (input_bfd) [r_symndx];
2640 else if (h != NULL)
2641 tls_type = tilepro_elf_hash_entry(h)->tls_type;
2642
2643 is_tls_iele = (bfd_link_executable (info) || tls_type == GOT_TLS_IE);
2644 is_tls_le = is_tls_iele && (bfd_link_executable (info)
2645 && (h == NULL || h->dynindx == -1));
2646
2647 if (r_type == R_TILEPRO_TLS_GD_CALL)
2648 {
2649 if (is_tls_le)
2650 {
2651 /* GD -> LE */
2652 tilepro_replace_insn (contents + rel->r_offset,
2653 insn_mask_X1, insn_tls_le_move_X1);
2654 continue;
2655 }
2656 else if (is_tls_iele)
2657 {
2658 /* GD -> IE */
2659 tilepro_replace_insn (contents + rel->r_offset,
2660 insn_mask_X1, insn_tls_ie_lw_X1);
2661 continue;
2662 }
2663
2664 /* GD -> GD */
2665 h = (struct elf_link_hash_entry *)
2666 bfd_link_hash_lookup (info->hash, "__tls_get_addr", false,
2667 false, true);
2668 BFD_ASSERT (h != NULL);
2669 r_type = R_TILEPRO_JOFFLONG_X1_PLT;
2670 howto = tilepro_elf_howto_table + r_type;
2671 }
2672 else if (r_type == R_TILEPRO_IMM16_X0_TLS_GD_HA
2673 || r_type == R_TILEPRO_IMM16_X0_TLS_IE_HA)
2674 {
2675 if (is_tls_le)
2676 tilepro_replace_insn (contents + rel->r_offset, srca_mask_X0,
2677 insn_tls_le_move_zero_X0X1);
2678 }
2679 else if (r_type == R_TILEPRO_IMM16_X1_TLS_GD_HA
2680 || r_type == R_TILEPRO_IMM16_X1_TLS_IE_HA)
2681 {
2682 if (is_tls_le)
2683 tilepro_replace_insn (contents + rel->r_offset, srca_mask_X1,
2684 insn_tls_le_move_zero_X0X1);
2685 }
2686 else
2687 {
2688 const bfd_byte *mask = NULL;
2689 const bfd_byte *add_insn = NULL;
2690
2691 switch (r_type)
2692 {
2693 case R_TILEPRO_IMM8_X0_TLS_GD_ADD:
2694 add_insn = is_tls_iele ? insn_tls_ie_add_X0X1
2695 : insn_tls_gd_add_X0X1;
2696 mask = insn_mask_X0_no_dest_no_srca;
2697 break;
2698 case R_TILEPRO_IMM8_X1_TLS_GD_ADD:
2699 add_insn = is_tls_iele ? insn_tls_ie_add_X0X1
2700 : insn_tls_gd_add_X0X1;
2701 mask = insn_mask_X1_no_dest_no_srca;
2702 break;
2703 case R_TILEPRO_IMM8_Y0_TLS_GD_ADD:
2704 add_insn = is_tls_iele ? insn_tls_ie_add_Y0Y1
2705 : insn_tls_gd_add_Y0Y1;
2706 mask = insn_mask_Y0_no_dest_no_srca;
2707 break;
2708 case R_TILEPRO_IMM8_Y1_TLS_GD_ADD:
2709 add_insn = is_tls_iele ? insn_tls_ie_add_Y0Y1
2710 : insn_tls_gd_add_Y0Y1;
2711 mask = insn_mask_Y1_no_dest_no_srca;
2712 break;
2713 }
2714
2715 tilepro_replace_insn (contents + rel->r_offset, mask, add_insn);
2716
2717 continue;
2718 }
2719 break;
2720 case R_TILEPRO_TLS_IE_LOAD:
2721 if (bfd_link_executable (info) && (h == NULL || h->dynindx == -1))
2722 /* IE -> LE */
2723 tilepro_replace_insn (contents + rel->r_offset,
2724 insn_mask_X1_no_dest_no_srca,
2725 insn_tls_le_move_X1);
2726 else
2727 /* IE -> IE */
2728 tilepro_replace_insn (contents + rel->r_offset,
2729 insn_mask_X1_no_dest_no_srca,
2730 insn_tls_ie_lw_X1);
2731 continue;
2732 break;
2733 default:
2734 break;
2735 }
2736
2737 resolved_to_zero = (h != NULL
2738 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
2739
2740 switch (r_type)
2741 {
2742 case R_TILEPRO_IMM16_X0_GOT:
2743 case R_TILEPRO_IMM16_X1_GOT:
2744 case R_TILEPRO_IMM16_X0_GOT_LO:
2745 case R_TILEPRO_IMM16_X1_GOT_LO:
2746 case R_TILEPRO_IMM16_X0_GOT_HI:
2747 case R_TILEPRO_IMM16_X1_GOT_HI:
2748 case R_TILEPRO_IMM16_X0_GOT_HA:
2749 case R_TILEPRO_IMM16_X1_GOT_HA:
2750 /* Relocation is to the entry for this symbol in the global
2751 offset table. */
2752 if (htab->sgot == NULL)
2753 abort ();
2754
2755 if (h != NULL)
2756 {
2757 bool dyn;
2758
2759 off = h->got.offset;
2760 BFD_ASSERT (off != (bfd_vma) -1);
2761 dyn = elf_hash_table (info)->dynamic_sections_created;
2762
2763 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2764 bfd_link_pic (info),
2765 h)
2766 || (bfd_link_pic (info)
2767 && SYMBOL_REFERENCES_LOCAL (info, h)))
2768 {
2769 /* This is actually a static link, or it is a
2770 -Bsymbolic link and the symbol is defined
2771 locally, or the symbol was forced to be local
2772 because of a version file. We must initialize
2773 this entry in the global offset table. Since the
2774 offset must always be a multiple
2775 of 4 for 32-bit, we use the least significant bit
2776 to record whether we have initialized it already.
2777
2778 When doing a dynamic link, we create a .rela.got
2779 relocation entry to initialize the value. This
2780 is done in the finish_dynamic_symbol routine. */
2781 if ((off & 1) != 0)
2782 off &= ~1;
2783 else
2784 {
2785 bfd_put_32 (output_bfd, relocation,
2786 htab->sgot->contents + off);
2787 h->got.offset |= 1;
2788 }
2789 }
2790 else
2791 unresolved_reloc = false;
2792 }
2793 else
2794 {
2795 BFD_ASSERT (local_got_offsets != NULL
2796 && local_got_offsets[r_symndx] != (bfd_vma) -1);
2797
2798 off = local_got_offsets[r_symndx];
2799
2800 /* The offset must always be a multiple of 4 on 32-bit.
2801 We use the least significant bit to record
2802 whether we have already processed this entry. */
2803 if ((off & 1) != 0)
2804 off &= ~1;
2805 else
2806 {
2807 if (bfd_link_pic (info))
2808 {
2809 asection *s;
2810 Elf_Internal_Rela outrel;
2811
2812 /* We need to generate a R_TILEPRO_RELATIVE reloc
2813 for the dynamic linker. */
2814 s = htab->srelgot;
2815 BFD_ASSERT (s != NULL);
2816
2817 outrel.r_offset = (htab->sgot->output_section->vma
2818 + htab->sgot->output_offset
2819 + off);
2820 outrel.r_info = ELF32_R_INFO (0, R_TILEPRO_RELATIVE);
2821 outrel.r_addend = relocation;
2822 relocation = 0;
2823 tilepro_elf_append_rela_32 (output_bfd, s, &outrel);
2824 }
2825
2826 bfd_put_32 (output_bfd, relocation,
2827 htab->sgot->contents + off);
2828 local_got_offsets[r_symndx] |= 1;
2829 }
2830 }
2831 relocation = off - got_base;
2832 break;
2833
2834 case R_TILEPRO_JOFFLONG_X1_PLT:
2835 /* Relocation is to the entry for this symbol in the
2836 procedure linkage table. */
2837 BFD_ASSERT (h != NULL);
2838
2839 if (h->plt.offset == (bfd_vma) -1 || htab->splt == NULL)
2840 {
2841 /* We didn't make a PLT entry for this symbol. This
2842 happens when statically linking PIC code, or when
2843 using -Bsymbolic. */
2844 break;
2845 }
2846
2847 relocation = (htab->splt->output_section->vma
2848 + htab->splt->output_offset
2849 + h->plt.offset);
2850 unresolved_reloc = false;
2851 break;
2852
2853 case R_TILEPRO_32_PCREL:
2854 case R_TILEPRO_16_PCREL:
2855 case R_TILEPRO_8_PCREL:
2856 case R_TILEPRO_IMM16_X0_PCREL:
2857 case R_TILEPRO_IMM16_X1_PCREL:
2858 case R_TILEPRO_IMM16_X0_LO_PCREL:
2859 case R_TILEPRO_IMM16_X1_LO_PCREL:
2860 case R_TILEPRO_IMM16_X0_HI_PCREL:
2861 case R_TILEPRO_IMM16_X1_HI_PCREL:
2862 case R_TILEPRO_IMM16_X0_HA_PCREL:
2863 case R_TILEPRO_IMM16_X1_HA_PCREL:
2864 if (h != NULL
2865 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2866 break;
2867 /* Fall through. */
2868 case R_TILEPRO_32:
2869 case R_TILEPRO_16:
2870 case R_TILEPRO_8:
2871 case R_TILEPRO_LO16:
2872 case R_TILEPRO_HI16:
2873 case R_TILEPRO_HA16:
2874 case R_TILEPRO_COPY:
2875 case R_TILEPRO_GLOB_DAT:
2876 case R_TILEPRO_JMP_SLOT:
2877 case R_TILEPRO_RELATIVE:
2878 case R_TILEPRO_BROFF_X1:
2879 case R_TILEPRO_JOFFLONG_X1:
2880 case R_TILEPRO_IMM8_X0:
2881 case R_TILEPRO_IMM8_Y0:
2882 case R_TILEPRO_IMM8_X1:
2883 case R_TILEPRO_IMM8_Y1:
2884 case R_TILEPRO_DEST_IMM8_X1:
2885 case R_TILEPRO_MT_IMM15_X1:
2886 case R_TILEPRO_MF_IMM15_X1:
2887 case R_TILEPRO_IMM16_X0:
2888 case R_TILEPRO_IMM16_X1:
2889 case R_TILEPRO_IMM16_X0_LO:
2890 case R_TILEPRO_IMM16_X1_LO:
2891 case R_TILEPRO_IMM16_X0_HI:
2892 case R_TILEPRO_IMM16_X1_HI:
2893 case R_TILEPRO_IMM16_X0_HA:
2894 case R_TILEPRO_IMM16_X1_HA:
2895 case R_TILEPRO_MMSTART_X0:
2896 case R_TILEPRO_MMEND_X0:
2897 case R_TILEPRO_MMSTART_X1:
2898 case R_TILEPRO_MMEND_X1:
2899 case R_TILEPRO_SHAMT_X0:
2900 case R_TILEPRO_SHAMT_X1:
2901 case R_TILEPRO_SHAMT_Y0:
2902 case R_TILEPRO_SHAMT_Y1:
2903 if ((input_section->flags & SEC_ALLOC) == 0)
2904 break;
2905
2906 if ((bfd_link_pic (info)
2907 && (h == NULL
2908 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2909 && !resolved_to_zero)
2910 || h->root.type != bfd_link_hash_undefweak)
2911 && (! howto->pc_relative
2912 || !SYMBOL_CALLS_LOCAL (info, h)))
2913 || (!bfd_link_pic (info)
2914 && h != NULL
2915 && h->dynindx != -1
2916 && !h->non_got_ref
2917 && ((h->def_dynamic
2918 && !h->def_regular)
2919 || h->root.type == bfd_link_hash_undefweak
2920 || h->root.type == bfd_link_hash_undefined)))
2921 {
2922 Elf_Internal_Rela outrel;
2923 bool skip, relocate = false;
2924
2925 /* When generating a shared object, these relocations
2926 are copied into the output file to be resolved at run
2927 time. */
2928
2929 BFD_ASSERT (sreloc != NULL);
2930
2931 skip = false;
2932
2933 outrel.r_offset =
2934 _bfd_elf_section_offset (output_bfd, info, input_section,
2935 rel->r_offset);
2936 if (outrel.r_offset == (bfd_vma) -1)
2937 skip = true;
2938 else if (outrel.r_offset == (bfd_vma) -2)
2939 skip = true, relocate = true;
2940 outrel.r_offset += (input_section->output_section->vma
2941 + input_section->output_offset);
2942
2943 switch (r_type)
2944 {
2945 case R_TILEPRO_32_PCREL:
2946 case R_TILEPRO_16_PCREL:
2947 case R_TILEPRO_8_PCREL:
2948 /* If the symbol is not dynamic, we should not keep
2949 a dynamic relocation. But an .rela.* slot has been
2950 allocated for it, output R_TILEPRO_NONE.
2951 FIXME: Add code tracking needed dynamic relocs as
2952 e.g. i386 has. */
2953 if (h->dynindx == -1)
2954 skip = true, relocate = true;
2955 break;
2956 }
2957
2958 if (skip)
2959 memset (&outrel, 0, sizeof outrel);
2960 /* h->dynindx may be -1 if the symbol was marked to
2961 become local. */
2962 else if (h != NULL &&
2963 h->dynindx != -1
2964 && (! is_plt
2965 || !bfd_link_pic (info)
2966 || !SYMBOLIC_BIND (info, h)
2967 || !h->def_regular))
2968 {
2969 BFD_ASSERT (h->dynindx != -1);
2970 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2971 outrel.r_addend = rel->r_addend;
2972 }
2973 else
2974 {
2975 if (r_type == R_TILEPRO_32)
2976 {
2977 outrel.r_info = ELF32_R_INFO (0, R_TILEPRO_RELATIVE);
2978 outrel.r_addend = relocation + rel->r_addend;
2979 }
2980 else
2981 {
2982 long indx;
2983
2984 outrel.r_addend = relocation + rel->r_addend;
2985
2986 if (is_plt)
2987 sec = htab->splt;
2988
2989 if (bfd_is_abs_section (sec))
2990 indx = 0;
2991 else if (sec == NULL || sec->owner == NULL)
2992 {
2993 bfd_set_error (bfd_error_bad_value);
2994 return false;
2995 }
2996 else
2997 {
2998 asection *osec;
2999
3000 /* We are turning this relocation into one
3001 against a section symbol. It would be
3002 proper to subtract the symbol's value,
3003 osec->vma, from the emitted reloc addend,
3004 but ld.so expects buggy relocs. */
3005 osec = sec->output_section;
3006 indx = elf_section_data (osec)->dynindx;
3007
3008 if (indx == 0)
3009 {
3010 osec = htab->text_index_section;
3011 indx = elf_section_data (osec)->dynindx;
3012 }
3013
3014 /* FIXME: we really should be able to link non-pic
3015 shared libraries. */
3016 if (indx == 0)
3017 {
3018 BFD_FAIL ();
3019 _bfd_error_handler
3020 (_("%pB: probably compiled without -fPIC?"),
3021 input_bfd);
3022 bfd_set_error (bfd_error_bad_value);
3023 return false;
3024 }
3025 }
3026
3027 outrel.r_info = ELF32_R_INFO (indx, r_type);
3028 }
3029 }
3030
3031 tilepro_elf_append_rela_32 (output_bfd, sreloc, &outrel);
3032
3033 /* This reloc will be computed at runtime, so there's no
3034 need to do anything now. */
3035 if (! relocate)
3036 continue;
3037 }
3038 break;
3039
3040 case R_TILEPRO_IMM16_X0_TLS_LE:
3041 case R_TILEPRO_IMM16_X1_TLS_LE:
3042 case R_TILEPRO_IMM16_X0_TLS_LE_LO:
3043 case R_TILEPRO_IMM16_X1_TLS_LE_LO:
3044 case R_TILEPRO_IMM16_X0_TLS_LE_HI:
3045 case R_TILEPRO_IMM16_X1_TLS_LE_HI:
3046 case R_TILEPRO_IMM16_X0_TLS_LE_HA:
3047 case R_TILEPRO_IMM16_X1_TLS_LE_HA:
3048 if (!bfd_link_executable (info))
3049 {
3050 Elf_Internal_Rela outrel;
3051 bool skip;
3052
3053 BFD_ASSERT (sreloc != NULL);
3054 skip = false;
3055 outrel.r_offset =
3056 _bfd_elf_section_offset (output_bfd, info, input_section,
3057 rel->r_offset);
3058 if (outrel.r_offset == (bfd_vma) -1)
3059 skip = true;
3060 else if (outrel.r_offset == (bfd_vma) -2)
3061 skip = true;
3062 outrel.r_offset += (input_section->output_section->vma
3063 + input_section->output_offset);
3064 if (skip)
3065 memset (&outrel, 0, sizeof outrel);
3066 else
3067 {
3068 outrel.r_info = ELF32_R_INFO (0, r_type);
3069 outrel.r_addend = relocation - dtpoff_base (info)
3070 + rel->r_addend;
3071 }
3072
3073 tilepro_elf_append_rela_32 (output_bfd, sreloc, &outrel);
3074 continue;
3075 }
3076 relocation = tpoff (info, relocation);
3077 break;
3078
3079 case R_TILEPRO_IMM16_X0_TLS_GD:
3080 case R_TILEPRO_IMM16_X1_TLS_GD:
3081 case R_TILEPRO_IMM16_X0_TLS_GD_LO:
3082 case R_TILEPRO_IMM16_X1_TLS_GD_LO:
3083 case R_TILEPRO_IMM16_X0_TLS_GD_HI:
3084 case R_TILEPRO_IMM16_X1_TLS_GD_HI:
3085 case R_TILEPRO_IMM16_X0_TLS_GD_HA:
3086 case R_TILEPRO_IMM16_X1_TLS_GD_HA:
3087 case R_TILEPRO_IMM16_X0_TLS_IE:
3088 case R_TILEPRO_IMM16_X1_TLS_IE:
3089 case R_TILEPRO_IMM16_X0_TLS_IE_LO:
3090 case R_TILEPRO_IMM16_X1_TLS_IE_LO:
3091 case R_TILEPRO_IMM16_X0_TLS_IE_HI:
3092 case R_TILEPRO_IMM16_X1_TLS_IE_HI:
3093 case R_TILEPRO_IMM16_X0_TLS_IE_HA:
3094 case R_TILEPRO_IMM16_X1_TLS_IE_HA:
3095 r_type = tilepro_elf_tls_transition (info, r_type, h == NULL);
3096 tls_type = GOT_UNKNOWN;
3097 if (h == NULL && local_got_offsets)
3098 tls_type
3099 = _bfd_tilepro_elf_local_got_tls_type (input_bfd) [r_symndx];
3100 else if (h != NULL)
3101 {
3102 tls_type = tilepro_elf_hash_entry(h)->tls_type;
3103 if (bfd_link_executable (info)
3104 && h->dynindx == -1
3105 && tls_type == GOT_TLS_IE)
3106 r_type = tilepro_tls_translate_to_le (r_type);
3107 }
3108 if (tls_type == GOT_TLS_IE)
3109 r_type = tilepro_tls_translate_to_ie (r_type);
3110
3111 if (r_type == R_TILEPRO_IMM16_X0_TLS_LE
3112 || r_type == R_TILEPRO_IMM16_X1_TLS_LE
3113 || r_type == R_TILEPRO_IMM16_X0_TLS_LE_LO
3114 || r_type == R_TILEPRO_IMM16_X1_TLS_LE_LO
3115 || r_type == R_TILEPRO_IMM16_X0_TLS_LE_HI
3116 || r_type == R_TILEPRO_IMM16_X1_TLS_LE_HI
3117 || r_type == R_TILEPRO_IMM16_X0_TLS_LE_HA
3118 || r_type == R_TILEPRO_IMM16_X1_TLS_LE_HA)
3119 {
3120 relocation = tpoff (info, relocation);
3121 break;
3122 }
3123
3124 if (h != NULL)
3125 {
3126 off = h->got.offset;
3127 h->got.offset |= 1;
3128 }
3129 else
3130 {
3131 BFD_ASSERT (local_got_offsets != NULL);
3132 off = local_got_offsets[r_symndx];
3133 local_got_offsets[r_symndx] |= 1;
3134 }
3135
3136 if (htab->sgot == NULL)
3137 abort ();
3138
3139 if ((off & 1) != 0)
3140 off &= ~1;
3141 else
3142 {
3143 Elf_Internal_Rela outrel;
3144 int indx = 0;
3145 bool need_relocs = false;
3146
3147 if (htab->srelgot == NULL)
3148 abort ();
3149
3150 if (h != NULL)
3151 {
3152 bool dyn;
3153 dyn = htab->dynamic_sections_created;
3154
3155 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3156 bfd_link_pic (info),
3157 h)
3158 && (!bfd_link_pic (info)
3159 || !SYMBOL_REFERENCES_LOCAL (info, h)))
3160 {
3161 indx = h->dynindx;
3162 }
3163 }
3164
3165 /* The GOT entries have not been initialized yet. Do it
3166 now, and emit any relocations. */
3167 if ((bfd_link_pic (info) || indx != 0)
3168 && (h == NULL
3169 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3170 || h->root.type != bfd_link_hash_undefweak))
3171 need_relocs = true;
3172
3173 switch (r_type)
3174 {
3175 case R_TILEPRO_IMM16_X0_TLS_IE:
3176 case R_TILEPRO_IMM16_X1_TLS_IE:
3177 case R_TILEPRO_IMM16_X0_TLS_IE_LO:
3178 case R_TILEPRO_IMM16_X1_TLS_IE_LO:
3179 case R_TILEPRO_IMM16_X0_TLS_IE_HI:
3180 case R_TILEPRO_IMM16_X1_TLS_IE_HI:
3181 case R_TILEPRO_IMM16_X0_TLS_IE_HA:
3182 case R_TILEPRO_IMM16_X1_TLS_IE_HA:
3183 if (need_relocs) {
3184 bfd_put_32 (output_bfd, 0, htab->sgot->contents + off);
3185 outrel.r_offset = (htab->sgot->output_section->vma
3186 + htab->sgot->output_offset + off);
3187 outrel.r_addend = 0;
3188 if (indx == 0)
3189 outrel.r_addend = relocation - dtpoff_base (info);
3190 outrel.r_info = ELF32_R_INFO (indx, R_TILEPRO_TLS_TPOFF32);
3191 tilepro_elf_append_rela_32 (output_bfd, htab->srelgot,
3192 &outrel);
3193 } else {
3194 bfd_put_32 (output_bfd, tpoff (info, relocation),
3195 htab->sgot->contents + off);
3196 }
3197 break;
3198
3199 case R_TILEPRO_IMM16_X0_TLS_GD:
3200 case R_TILEPRO_IMM16_X1_TLS_GD:
3201 case R_TILEPRO_IMM16_X0_TLS_GD_LO:
3202 case R_TILEPRO_IMM16_X1_TLS_GD_LO:
3203 case R_TILEPRO_IMM16_X0_TLS_GD_HI:
3204 case R_TILEPRO_IMM16_X1_TLS_GD_HI:
3205 case R_TILEPRO_IMM16_X0_TLS_GD_HA:
3206 case R_TILEPRO_IMM16_X1_TLS_GD_HA:
3207 if (need_relocs) {
3208 outrel.r_offset = (htab->sgot->output_section->vma
3209 + htab->sgot->output_offset + off);
3210 outrel.r_addend = 0;
3211 outrel.r_info = ELF32_R_INFO (indx, R_TILEPRO_TLS_DTPMOD32);
3212 bfd_put_32 (output_bfd, 0, htab->sgot->contents + off);
3213 tilepro_elf_append_rela_32 (output_bfd, htab->srelgot,
3214 &outrel);
3215 if (indx == 0)
3216 {
3217 BFD_ASSERT (! unresolved_reloc);
3218 bfd_put_32 (output_bfd,
3219 relocation - dtpoff_base (info),
3220 (htab->sgot->contents + off +
3221 TILEPRO_BYTES_PER_WORD));
3222 }
3223 else
3224 {
3225 bfd_put_32 (output_bfd, 0,
3226 (htab->sgot->contents + off +
3227 TILEPRO_BYTES_PER_WORD));
3228 outrel.r_info = ELF32_R_INFO (indx,
3229 R_TILEPRO_TLS_DTPOFF32);
3230 outrel.r_offset += TILEPRO_BYTES_PER_WORD;
3231 tilepro_elf_append_rela_32 (output_bfd,
3232 htab->srelgot, &outrel);
3233 }
3234 }
3235
3236 else {
3237 /* If we are not emitting relocations for a
3238 general dynamic reference, then we must be in a
3239 static link or an executable link with the
3240 symbol binding locally. Mark it as belonging
3241 to module 1, the executable. */
3242 bfd_put_32 (output_bfd, 1,
3243 htab->sgot->contents + off );
3244 bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
3245 htab->sgot->contents + off +
3246 TILEPRO_BYTES_PER_WORD);
3247 }
3248 break;
3249 }
3250 }
3251
3252 if (off >= (bfd_vma) -2)
3253 abort ();
3254
3255 relocation = off - got_base;
3256 unresolved_reloc = false;
3257 howto = tilepro_elf_howto_table + r_type;
3258 break;
3259
3260 default:
3261 break;
3262 }
3263
3264 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3265 because such sections are not SEC_ALLOC and thus ld.so will
3266 not process them. */
3267 if (unresolved_reloc
3268 && !((input_section->flags & SEC_DEBUGGING) != 0
3269 && h->def_dynamic)
3270 && _bfd_elf_section_offset (output_bfd, info, input_section,
3271 rel->r_offset) != (bfd_vma) -1)
3272 _bfd_error_handler
3273 /* xgettext:c-format */
3274 (_("%pB(%pA+%#" PRIx64 "): "
3275 "unresolvable %s relocation against symbol `%s'"),
3276 input_bfd,
3277 input_section,
3278 (uint64_t) rel->r_offset,
3279 howto->name,
3280 h->root.root.string);
3281
3282 r = bfd_reloc_continue;
3283
3284 /* For the _HA types, we add 0x8000 so that if bit 15 is set,
3285 * we will increment bit 16. The howto->rightshift takes care
3286 * of the rest for us. */
3287 switch (r_type)
3288 {
3289 case R_TILEPRO_HA16:
3290 case R_TILEPRO_IMM16_X0_HA:
3291 case R_TILEPRO_IMM16_X1_HA:
3292 case R_TILEPRO_IMM16_X0_HA_PCREL:
3293 case R_TILEPRO_IMM16_X1_HA_PCREL:
3294 case R_TILEPRO_IMM16_X0_GOT_HA:
3295 case R_TILEPRO_IMM16_X1_GOT_HA:
3296 case R_TILEPRO_IMM16_X0_TLS_GD_HA:
3297 case R_TILEPRO_IMM16_X1_TLS_GD_HA:
3298 case R_TILEPRO_IMM16_X0_TLS_IE_HA:
3299 case R_TILEPRO_IMM16_X1_TLS_IE_HA:
3300 relocation += 0x8000;
3301 break;
3302 }
3303
3304 /* Get the operand creation function, if any. */
3305 create_func = reloc_to_create_func[r_type];
3306 if (create_func == NULL)
3307 {
3308 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3309 contents, rel->r_offset,
3310 relocation, rel->r_addend);
3311 }
3312 else
3313 {
3314 if (howto->pc_relative)
3315 {
3316 relocation -=
3317 input_section->output_section->vma + input_section->output_offset;
3318 if (howto->pcrel_offset)
3319 relocation -= rel->r_offset;
3320 }
3321
3322 bfd_byte *data;
3323
3324 /* Add the relocation addend if any to the final target value */
3325 relocation += rel->r_addend;
3326
3327 /* Do basic range checking */
3328 r = bfd_check_overflow (howto->complain_on_overflow,
3329 howto->bitsize,
3330 howto->rightshift,
3331 32,
3332 relocation);
3333
3334 /*
3335 * Write the relocated value out into the raw section data.
3336 * Don't put a relocation out in the .rela section.
3337 */
3338 tilepro_bundle_bits mask = create_func(-1);
3339 tilepro_bundle_bits value = create_func(relocation >> howto->rightshift);
3340
3341 /* Only touch bytes while the mask is not 0, so we
3342 don't write to out of bounds memory if this is actually
3343 a 16-bit switch instruction. */
3344 for (data = contents + rel->r_offset; mask != 0; data++)
3345 {
3346 bfd_byte byte_mask = (bfd_byte)mask;
3347 *data = (*data & ~byte_mask) | ((bfd_byte)value & byte_mask);
3348 mask >>= 8;
3349 value >>= 8;
3350 }
3351 }
3352
3353 if (r != bfd_reloc_ok)
3354 {
3355 const char *msg = NULL;
3356
3357 switch (r)
3358 {
3359 case bfd_reloc_overflow:
3360 (*info->callbacks->reloc_overflow)
3361 (info, (h ? &h->root : NULL), name, howto->name,
3362 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
3363 break;
3364
3365 case bfd_reloc_undefined:
3366 (*info->callbacks->undefined_symbol)
3367 (info, name, input_bfd, input_section, rel->r_offset, true);
3368 break;
3369
3370 case bfd_reloc_outofrange:
3371 msg = _("internal error: out of range error");
3372 break;
3373
3374 case bfd_reloc_notsupported:
3375 msg = _("internal error: unsupported relocation error");
3376 break;
3377
3378 case bfd_reloc_dangerous:
3379 msg = _("internal error: dangerous relocation");
3380 break;
3381
3382 default:
3383 msg = _("internal error: unknown error");
3384 break;
3385 }
3386
3387 if (msg)
3388 (*info->callbacks->warning) (info, msg, name, input_bfd,
3389 input_section, rel->r_offset);
3390 }
3391 }
3392
3393 return true;
3394 }
3395
3396 /* Finish up dynamic symbol handling. We set the contents of various
3397 dynamic sections here. */
3398
3399 static bool
3400 tilepro_elf_finish_dynamic_symbol (bfd *output_bfd,
3401 struct bfd_link_info *info,
3402 struct elf_link_hash_entry *h,
3403 Elf_Internal_Sym *sym)
3404 {
3405 struct elf_link_hash_table *htab;
3406
3407 htab = tilepro_elf_hash_table (info);
3408 BFD_ASSERT (htab != NULL);
3409
3410 if (h->plt.offset != (bfd_vma) -1)
3411 {
3412 asection *splt;
3413 asection *srela;
3414 asection *sgotplt;
3415 Elf_Internal_Rela rela;
3416 bfd_byte *loc;
3417 bfd_vma r_offset;
3418
3419 int rela_index;
3420
3421 /* This symbol has an entry in the PLT. Set it up. */
3422
3423 BFD_ASSERT (h->dynindx != -1);
3424
3425 splt = htab->splt;
3426 srela = htab->srelplt;
3427 sgotplt = htab->sgotplt;
3428
3429 if (splt == NULL || srela == NULL)
3430 abort ();
3431
3432 /* Fill in the entry in the procedure linkage table. */
3433 rela_index = tilepro_plt_entry_build (splt, sgotplt, h->plt.offset,
3434 &r_offset);
3435
3436 /* Fill in the entry in the global offset table, which initially points
3437 to the beginning of the plt. */
3438 bfd_put_32 (output_bfd, splt->output_section->vma + splt->output_offset,
3439 sgotplt->contents + r_offset);
3440
3441 /* Fill in the entry in the .rela.plt section. */
3442 rela.r_offset = (sgotplt->output_section->vma
3443 + sgotplt->output_offset
3444 + r_offset);
3445 rela.r_addend = 0;
3446 rela.r_info = ELF32_R_INFO (h->dynindx, R_TILEPRO_JMP_SLOT);
3447
3448 loc = srela->contents + rela_index * sizeof (Elf32_External_Rela);
3449 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3450
3451 if (!h->def_regular)
3452 {
3453 /* Mark the symbol as undefined, rather than as defined in
3454 the .plt section. Leave the value alone. */
3455 sym->st_shndx = SHN_UNDEF;
3456 /* If the symbol is weak, we do need to clear the value.
3457 Otherwise, the PLT entry would provide a definition for
3458 the symbol even if the symbol wasn't defined anywhere,
3459 and so the symbol would never be NULL. */
3460 if (!h->ref_regular_nonweak)
3461 sym->st_value = 0;
3462 }
3463 }
3464
3465 if (h->got.offset != (bfd_vma) -1
3466 && tilepro_elf_hash_entry(h)->tls_type != GOT_TLS_GD
3467 && tilepro_elf_hash_entry(h)->tls_type != GOT_TLS_IE)
3468 {
3469 asection *sgot;
3470 asection *srela;
3471 Elf_Internal_Rela rela;
3472
3473 /* This symbol has an entry in the GOT. Set it up. */
3474
3475 sgot = htab->sgot;
3476 srela = htab->srelgot;
3477 BFD_ASSERT (sgot != NULL && srela != NULL);
3478
3479 rela.r_offset = (sgot->output_section->vma
3480 + sgot->output_offset
3481 + (h->got.offset &~ (bfd_vma) 1));
3482
3483 /* If this is a -Bsymbolic link, and the symbol is defined
3484 locally, we just want to emit a RELATIVE reloc. Likewise if
3485 the symbol was forced to be local because of a version file.
3486 The entry in the global offset table will already have been
3487 initialized in the relocate_section function. */
3488 if (bfd_link_pic (info)
3489 && (info->symbolic || h->dynindx == -1)
3490 && h->def_regular)
3491 {
3492 asection *sec = h->root.u.def.section;
3493 rela.r_info = ELF32_R_INFO (0, R_TILEPRO_RELATIVE);
3494 rela.r_addend = (h->root.u.def.value
3495 + sec->output_section->vma
3496 + sec->output_offset);
3497 }
3498 else
3499 {
3500 rela.r_info = ELF32_R_INFO (h->dynindx, R_TILEPRO_GLOB_DAT);
3501 rela.r_addend = 0;
3502 }
3503
3504 bfd_put_32 (output_bfd, 0,
3505 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
3506 tilepro_elf_append_rela_32 (output_bfd, srela, &rela);
3507 }
3508
3509 if (h->needs_copy)
3510 {
3511 asection *s;
3512 Elf_Internal_Rela rela;
3513
3514 /* This symbols needs a copy reloc. Set it up. */
3515 BFD_ASSERT (h->dynindx != -1);
3516
3517 rela.r_offset = (h->root.u.def.value
3518 + h->root.u.def.section->output_section->vma
3519 + h->root.u.def.section->output_offset);
3520 rela.r_info = ELF32_R_INFO (h->dynindx, R_TILEPRO_COPY);
3521 rela.r_addend = 0;
3522 if (h->root.u.def.section == htab->sdynrelro)
3523 s = htab->sreldynrelro;
3524 else
3525 s = htab->srelbss;
3526 tilepro_elf_append_rela_32 (output_bfd, s, &rela);
3527 }
3528
3529 /* Mark some specially defined symbols as absolute. */
3530 if (h == htab->hdynamic
3531 || (h == htab->hgot || h == htab->hplt))
3532 sym->st_shndx = SHN_ABS;
3533
3534 return true;
3535 }
3536
3537 /* Finish up the dynamic sections. */
3538
3539 static bool
3540 tilepro_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
3541 bfd *dynobj, asection *sdyn,
3542 asection *splt ATTRIBUTE_UNUSED)
3543 {
3544 Elf32_External_Dyn *dyncon, *dynconend;
3545 struct elf_link_hash_table *htab;
3546
3547 htab = tilepro_elf_hash_table (info);
3548 BFD_ASSERT (htab != NULL);
3549 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3550 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3551 for (; dyncon < dynconend; dyncon++)
3552 {
3553 Elf_Internal_Dyn dyn;
3554 asection *s;
3555
3556 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3557
3558 switch (dyn.d_tag)
3559 {
3560 case DT_PLTGOT:
3561 s = htab->sgotplt;
3562 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3563 break;
3564 case DT_JMPREL:
3565 s = htab->srelplt;
3566 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3567 break;
3568 case DT_PLTRELSZ:
3569 s = htab->srelplt;
3570 dyn.d_un.d_val = s->size;
3571 break;
3572 default:
3573 continue;
3574 }
3575
3576 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3577 }
3578 return true;
3579 }
3580
3581 static bool
3582 tilepro_elf_finish_dynamic_sections (bfd *output_bfd,
3583 struct bfd_link_info *info)
3584 {
3585 bfd *dynobj;
3586 asection *sdyn;
3587 struct elf_link_hash_table *htab;
3588
3589 htab = tilepro_elf_hash_table (info);
3590 BFD_ASSERT (htab != NULL);
3591 dynobj = htab->dynobj;
3592
3593 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
3594
3595 if (elf_hash_table (info)->dynamic_sections_created)
3596 {
3597 asection *splt;
3598 bool ret;
3599
3600 splt = htab->splt;
3601 BFD_ASSERT (splt != NULL && sdyn != NULL);
3602
3603 ret = tilepro_finish_dyn (output_bfd, info, dynobj, sdyn, splt);
3604
3605 if (!ret)
3606 return ret;
3607
3608 /* Fill in the first entry in the procedure linkage table. */
3609 if (splt->size > 0)
3610 {
3611 memcpy (splt->contents, tilepro_plt0_entry, PLT_HEADER_SIZE);
3612 memset (splt->contents + PLT_HEADER_SIZE, 0,
3613 PLT_ENTRY_SIZE - PLT_HEADER_SIZE);
3614 }
3615
3616 if (elf_section_data (splt->output_section) != NULL)
3617 elf_section_data (splt->output_section)->this_hdr.sh_entsize
3618 = PLT_ENTRY_SIZE;
3619 }
3620
3621 if (htab->sgotplt)
3622 {
3623 if (bfd_is_abs_section (htab->sgotplt->output_section))
3624 {
3625 _bfd_error_handler
3626 (_("discarded output section: `%pA'"), htab->sgotplt);
3627 return false;
3628 }
3629
3630 if (htab->sgotplt->size > 0)
3631 {
3632 /* Write the first two entries in .got.plt, needed for the dynamic
3633 linker. */
3634 bfd_put_32 (output_bfd, (bfd_vma) -1,
3635 htab->sgotplt->contents);
3636 bfd_put_32 (output_bfd, (bfd_vma) 0,
3637 htab->sgotplt->contents + GOT_ENTRY_SIZE);
3638 }
3639
3640 elf_section_data (htab->sgotplt->output_section)->this_hdr.sh_entsize
3641 = GOT_ENTRY_SIZE;
3642 }
3643
3644 if (htab->sgot)
3645 {
3646 if (htab->sgot->size > 0)
3647 {
3648 /* Set the first entry in the global offset table to the address of
3649 the dynamic section. */
3650 bfd_vma val = (sdyn ?
3651 sdyn->output_section->vma + sdyn->output_offset :
3652 0);
3653 bfd_put_32 (output_bfd, val, htab->sgot->contents);
3654 }
3655
3656 elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize
3657 = GOT_ENTRY_SIZE;
3658 }
3659
3660 return true;
3661 }
3662
3663 \f
3664
3665 /* Return address for Ith PLT stub in section PLT, for relocation REL
3666 or (bfd_vma) -1 if it should not be included. */
3667
3668 static bfd_vma
3669 tilepro_elf_plt_sym_val (bfd_vma i, const asection *plt,
3670 const arelent *rel ATTRIBUTE_UNUSED)
3671 {
3672 return plt->vma + (i + 1) * PLT_ENTRY_SIZE;
3673 }
3674
3675 static enum elf_reloc_type_class
3676 tilepro_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3677 const asection *rel_sec ATTRIBUTE_UNUSED,
3678 const Elf_Internal_Rela *rela)
3679 {
3680 switch ((int) ELF32_R_TYPE (rela->r_info))
3681 {
3682 case R_TILEPRO_RELATIVE:
3683 return reloc_class_relative;
3684 case R_TILEPRO_JMP_SLOT:
3685 return reloc_class_plt;
3686 case R_TILEPRO_COPY:
3687 return reloc_class_copy;
3688 default:
3689 return reloc_class_normal;
3690 }
3691 }
3692
3693 static int
3694 tilepro_additional_program_headers (bfd *abfd,
3695 struct bfd_link_info *info ATTRIBUTE_UNUSED)
3696 {
3697 /* Each .intrpt section specified by the user adds another PT_LOAD
3698 header since the sections are discontiguous. */
3699 static const char intrpt_sections[4][9] =
3700 {
3701 ".intrpt0", ".intrpt1", ".intrpt2", ".intrpt3"
3702 };
3703 int count = 0;
3704 int i;
3705
3706 for (i = 0; i < 4; i++)
3707 {
3708 asection *sec = bfd_get_section_by_name (abfd, intrpt_sections[i]);
3709 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
3710 ++count;
3711 }
3712
3713 /* Add four "padding" headers in to leave room in case a custom linker
3714 script does something fancy. Otherwise ld complains that it ran
3715 out of program headers and refuses to link. */
3716 count += 4;
3717
3718 return count;
3719 }
3720
3721 #define ELF_ARCH bfd_arch_tilepro
3722 #define ELF_TARGET_ID TILEPRO_ELF_DATA
3723 #define ELF_MACHINE_CODE EM_TILEPRO
3724 #define ELF_MAXPAGESIZE 0x10000
3725 #define ELF_COMMONPAGESIZE 0x10000
3726
3727 #define TARGET_LITTLE_SYM tilepro_elf32_vec
3728 #define TARGET_LITTLE_NAME "elf32-tilepro"
3729
3730 #define elf_backend_reloc_type_class tilepro_reloc_type_class
3731
3732 #define bfd_elf32_bfd_reloc_name_lookup tilepro_reloc_name_lookup
3733 #define bfd_elf32_bfd_link_hash_table_create tilepro_elf_link_hash_table_create
3734 #define bfd_elf32_bfd_reloc_type_lookup tilepro_reloc_type_lookup
3735
3736 #define elf_backend_copy_indirect_symbol tilepro_elf_copy_indirect_symbol
3737 #define elf_backend_create_dynamic_sections tilepro_elf_create_dynamic_sections
3738 #define elf_backend_check_relocs tilepro_elf_check_relocs
3739 #define elf_backend_adjust_dynamic_symbol tilepro_elf_adjust_dynamic_symbol
3740 #define elf_backend_omit_section_dynsym tilepro_elf_omit_section_dynsym
3741 #define elf_backend_late_size_sections tilepro_elf_late_size_sections
3742 #define elf_backend_relocate_section tilepro_elf_relocate_section
3743 #define elf_backend_finish_dynamic_symbol tilepro_elf_finish_dynamic_symbol
3744 #define elf_backend_finish_dynamic_sections tilepro_elf_finish_dynamic_sections
3745 #define elf_backend_gc_mark_hook tilepro_elf_gc_mark_hook
3746 #define elf_backend_plt_sym_val tilepro_elf_plt_sym_val
3747 #define elf_info_to_howto_rel NULL
3748 #define elf_info_to_howto tilepro_info_to_howto_rela
3749 #define elf_backend_grok_prstatus tilepro_elf_grok_prstatus
3750 #define elf_backend_grok_psinfo tilepro_elf_grok_psinfo
3751 #define elf_backend_additional_program_headers tilepro_additional_program_headers
3752
3753 #define bfd_elf32_mkobject tilepro_elf_mkobject
3754
3755 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
3756
3757 #define elf_backend_can_gc_sections 1
3758 #define elf_backend_can_refcount 1
3759 #define elf_backend_want_got_plt 1
3760 #define elf_backend_plt_readonly 1
3761 /* Align PLT mod 64 byte L2 line size. */
3762 #define elf_backend_plt_alignment 6
3763 #define elf_backend_want_plt_sym 1
3764 #define elf_backend_got_header_size GOT_ENTRY_SIZE
3765 #define elf_backend_want_dynrelro 1
3766 #define elf_backend_rela_normal 1
3767 #define elf_backend_default_execstack 0
3768
3769 #include "elf32-target.h"
The GNU Binutils are a collection of binary tools.