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Delete duplicate target short-cuts to dynamic sections
[deliverable/binutils-gdb.git] / bfd / elfxx-tilegx.c
1 /* TILE-Gx-specific support for ELF.
2 Copyright (C) 2011-2016 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/tilegx.h"
26 #include "opcode/tilegx.h"
27 #include "libiberty.h"
28 #include "elfxx-tilegx.h"
29
30 #define ABI_64_P(abfd) \
31 (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64)
32
33 #define TILEGX_ELF_WORD_BYTES(htab) \
34 ((htab)->bytes_per_word)
35
36 /* The size of an external RELA relocation. */
37 #define TILEGX_ELF_RELA_BYTES(htab) \
38 ((htab)->bytes_per_rela)
39
40 /* Both 32-bit and 64-bit tilegx encode this in an identical manner,
41 so just take advantage of that. */
42 #define TILEGX_ELF_R_TYPE(r_info) \
43 ((r_info) & 0xFF)
44
45 #define TILEGX_ELF_R_INFO(htab, in_rel, index, type) \
46 ((htab)->r_info (in_rel, index, type))
47
48 #define TILEGX_ELF_R_SYMNDX(htab, r_info) \
49 ((htab)->r_symndx(r_info))
50
51 #define TILEGX_ELF_DTPOFF_RELOC(htab) \
52 ((htab)->dtpoff_reloc)
53
54 #define TILEGX_ELF_DTPMOD_RELOC(htab) \
55 ((htab)->dtpmod_reloc)
56
57 #define TILEGX_ELF_TPOFF_RELOC(htab) \
58 ((htab)->tpoff_reloc)
59
60 #define TILEGX_ELF_PUT_WORD(htab, bfd, val, ptr) \
61 ((htab)->put_word (bfd, val, ptr))
62
63 /* The name of the dynamic interpreter. This is put in the .interp
64 section. */
65
66 #define ELF64_DYNAMIC_INTERPRETER "/lib/ld.so.1"
67 #define ELF32_DYNAMIC_INTERPRETER "/lib32/ld.so.1"
68
69
70 static reloc_howto_type tilegx_elf_howto_table [] =
71 {
72 /* This reloc does nothing. */
73 HOWTO (R_TILEGX_NONE, /* type */
74 0, /* rightshift */
75 3, /* size (0 = byte, 1 = short, 2 = long) */
76 0, /* bitsize */
77 FALSE, /* pc_relative */
78 0, /* bitpos */
79 complain_overflow_dont, /* complain_on_overflow */
80 bfd_elf_generic_reloc, /* special_function */
81 "R_TILEGX_NONE", /* name */
82 FALSE, /* partial_inplace */
83 0, /* src_mask */
84 0, /* dst_mask */
85 FALSE), /* pcrel_offset */
86 #ifdef BFD64
87 /* A 64 bit absolute relocation. */
88 HOWTO (R_TILEGX_64, /* type */
89 0, /* rightshift */
90 4, /* size (0 = byte, 1 = short, 2 = long) */
91 64, /* bitsize */
92 FALSE, /* pc_relative */
93 0, /* bitpos */
94 complain_overflow_dont, /* complain_on_overflow */
95 bfd_elf_generic_reloc, /* special_function */
96 "R_TILEGX_64", /* name */
97 FALSE, /* partial_inplace */
98 0, /* src_mask */
99 0xffffffffffffffffULL, /* dst_mask */
100 FALSE), /* pcrel_offset */
101 #endif
102 /* A 32 bit absolute relocation. */
103 HOWTO (R_TILEGX_32, /* type */
104 0, /* rightshift */
105 2, /* size (0 = byte, 1 = short, 2 = long) */
106 32, /* bitsize */
107 FALSE, /* pc_relative */
108 0, /* bitpos */
109 complain_overflow_dont, /* complain_on_overflow */
110 bfd_elf_generic_reloc, /* special_function */
111 "R_TILEGX_32", /* name */
112 FALSE, /* partial_inplace */
113 0, /* src_mask */
114 0xffffffff, /* dst_mask */
115 FALSE), /* pcrel_offset */
116
117 /* A 16 bit absolute relocation. */
118 HOWTO (R_TILEGX_16, /* type */
119 0, /* rightshift */
120 1, /* size (0 = byte, 1 = short, 2 = long) */
121 16, /* bitsize */
122 FALSE, /* pc_relative */
123 0, /* bitpos */
124 complain_overflow_bitfield, /* complain_on_overflow */
125 bfd_elf_generic_reloc, /* special_function */
126 "R_TILEGX_16", /* name */
127 FALSE, /* partial_inplace */
128 0, /* src_mask */
129 0xffff, /* dst_mask */
130 FALSE), /* pcrel_offset */
131
132 /* An 8 bit absolute relocation. */
133 HOWTO (R_TILEGX_8, /* type */
134 0, /* rightshift */
135 0, /* size (0 = byte, 1 = short, 2 = long) */
136 8, /* bitsize */
137 FALSE, /* pc_relative */
138 0, /* bitpos */
139 complain_overflow_unsigned, /* complain_on_overflow */
140 bfd_elf_generic_reloc, /* special_function */
141 "R_TILEGX_8", /* name */
142 FALSE, /* partial_inplace */
143 0, /* src_mask */
144 0xff, /* dst_mask */
145 FALSE), /* pcrel_offset */
146 #ifdef BFD64
147 /* A 64 bit pc-relative relocation. */
148 HOWTO (R_TILEGX_64_PCREL,/* type */
149 0, /* rightshift */
150 4, /* size (0 = byte, 1 = short, 2 = long) */
151 64, /* bitsize */
152 TRUE, /* pc_relative */
153 0, /* bitpos */
154 complain_overflow_dont, /* complain_on_overflow */
155 bfd_elf_generic_reloc, /* special_function */
156 "R_TILEGX_32_PCREL", /* name */
157 FALSE, /* partial_inplace */
158 0, /* src_mask */
159 0xffffffffffffffffULL, /* dst_mask */
160 TRUE), /* pcrel_offset */
161 #endif
162 /* A 32 bit pc-relative relocation. */
163 HOWTO (R_TILEGX_32_PCREL,/* type */
164 0, /* rightshift */
165 2, /* size (0 = byte, 1 = short, 2 = long) */
166 32, /* bitsize */
167 TRUE, /* pc_relative */
168 0, /* bitpos */
169 complain_overflow_dont, /* complain_on_overflow */
170 bfd_elf_generic_reloc, /* special_function */
171 "R_TILEGX_32_PCREL", /* name */
172 FALSE, /* partial_inplace */
173 0, /* src_mask */
174 0xffffffff, /* dst_mask */
175 TRUE), /* pcrel_offset */
176
177 /* A 16 bit pc-relative relocation. */
178 HOWTO (R_TILEGX_16_PCREL,/* type */
179 0, /* rightshift */
180 1, /* size (0 = byte, 1 = short, 2 = long) */
181 16, /* bitsize */
182 TRUE, /* pc_relative */
183 0, /* bitpos */
184 complain_overflow_signed, /* complain_on_overflow */
185 bfd_elf_generic_reloc, /* special_function */
186 "R_TILEGX_16_PCREL", /* name */
187 FALSE, /* partial_inplace */
188 0, /* src_mask */
189 0xffff, /* dst_mask */
190 TRUE), /* pcrel_offset */
191
192 /* An 8 bit pc-relative relocation. */
193 HOWTO (R_TILEGX_8_PCREL, /* type */
194 0, /* rightshift */
195 0, /* size (0 = byte, 1 = short, 2 = long) */
196 8, /* bitsize */
197 TRUE, /* pc_relative */
198 0, /* bitpos */
199 complain_overflow_signed, /* complain_on_overflow */
200 bfd_elf_generic_reloc, /* special_function */
201 "R_TILEGX_8_PCREL",/* name */
202 FALSE, /* partial_inplace */
203 0, /* src_mask */
204 0xff, /* dst_mask */
205 TRUE), /* pcrel_offset */
206
207 /* A 16 bit relocation without overflow. */
208 HOWTO (R_TILEGX_HW0, /* type */
209 0, /* rightshift */
210 1, /* size (0 = byte, 1 = short, 2 = long) */
211 16, /* bitsize */
212 FALSE, /* pc_relative */
213 0, /* bitpos */
214 complain_overflow_dont,/* complain_on_overflow */
215 bfd_elf_generic_reloc, /* special_function */
216 "R_TILEGX_HW0", /* name */
217 FALSE, /* partial_inplace */
218 0, /* src_mask */
219 0xffff, /* dst_mask */
220 FALSE), /* pcrel_offset */
221
222 /* A 16 bit relocation without overflow. */
223 HOWTO (R_TILEGX_HW1, /* type */
224 16, /* rightshift */
225 1, /* size (0 = byte, 1 = short, 2 = long) */
226 16, /* bitsize */
227 FALSE, /* pc_relative */
228 0, /* bitpos */
229 complain_overflow_dont,/* complain_on_overflow */
230 bfd_elf_generic_reloc, /* special_function */
231 "R_TILEGX_HW1", /* name */
232 FALSE, /* partial_inplace */
233 0, /* src_mask */
234 0xffff, /* dst_mask */
235 FALSE), /* pcrel_offset */
236
237 /* A 16 bit relocation without overflow. */
238 HOWTO (R_TILEGX_HW2, /* type */
239 32, /* rightshift */
240 1, /* size (0 = byte, 1 = short, 2 = long) */
241 16, /* bitsize */
242 FALSE, /* pc_relative */
243 0, /* bitpos */
244 complain_overflow_dont,/* complain_on_overflow */
245 bfd_elf_generic_reloc, /* special_function */
246 "R_TILEGX_HW2", /* name */
247 FALSE, /* partial_inplace */
248 0, /* src_mask */
249 0xffff, /* dst_mask */
250 FALSE), /* pcrel_offset */
251
252 /* A 16 bit relocation without overflow. */
253 HOWTO (R_TILEGX_HW3, /* type */
254 48, /* rightshift */
255 1, /* size (0 = byte, 1 = short, 2 = long) */
256 16, /* bitsize */
257 FALSE, /* pc_relative */
258 0, /* bitpos */
259 complain_overflow_dont,/* complain_on_overflow */
260 bfd_elf_generic_reloc, /* special_function */
261 "R_TILEGX_HW3", /* name */
262 FALSE, /* partial_inplace */
263 0, /* src_mask */
264 0xffff, /* dst_mask */
265 FALSE), /* pcrel_offset */
266
267 /* A 16 bit relocation with overflow. */
268 HOWTO (R_TILEGX_HW0_LAST, /* type */
269 0, /* rightshift */
270 1, /* size (0 = byte, 1 = short, 2 = long) */
271 16, /* bitsize */
272 FALSE, /* pc_relative */
273 0, /* bitpos */
274 complain_overflow_signed,/* complain_on_overflow */
275 bfd_elf_generic_reloc, /* special_function */
276 "R_TILEGX_HW0_LAST", /* name */
277 FALSE, /* partial_inplace */
278 0, /* src_mask */
279 0xffff, /* dst_mask */
280 FALSE), /* pcrel_offset */
281
282 /* A 16 bit relocation with overflow. */
283 HOWTO (R_TILEGX_HW1_LAST, /* type */
284 16, /* rightshift */
285 1, /* size (0 = byte, 1 = short, 2 = long) */
286 16, /* bitsize */
287 FALSE, /* pc_relative */
288 0, /* bitpos */
289 complain_overflow_signed,/* complain_on_overflow */
290 bfd_elf_generic_reloc, /* special_function */
291 "R_TILEGX_HW1_LAST", /* name */
292 FALSE, /* partial_inplace */
293 0, /* src_mask */
294 0xffff, /* dst_mask */
295 FALSE), /* pcrel_offset */
296
297 /* A 16 bit relocation with overflow. */
298 HOWTO (R_TILEGX_HW2_LAST, /* type */
299 32, /* rightshift */
300 1, /* size (0 = byte, 1 = short, 2 = long) */
301 16, /* bitsize */
302 FALSE, /* pc_relative */
303 0, /* bitpos */
304 complain_overflow_signed,/* complain_on_overflow */
305 bfd_elf_generic_reloc, /* special_function */
306 "R_TILEGX_HW2_LAST", /* name */
307 FALSE, /* partial_inplace */
308 0, /* src_mask */
309 0xffff, /* dst_mask */
310 FALSE), /* pcrel_offset */
311
312 HOWTO (R_TILEGX_COPY, /* type */
313 0, /* rightshift */
314 0, /* size (0 = byte, 1 = short, 2 = long) */
315 0, /* bitsize */
316 FALSE, /* pc_relative */
317 0, /* bitpos */
318 complain_overflow_dont, /* complain_on_overflow */
319 bfd_elf_generic_reloc, /* special_function */
320 "R_TILEGX_COPY", /* name */
321 FALSE, /* partial_inplace */
322 0, /* src_mask */
323 0, /* dst_mask */
324 TRUE), /* pcrel_offset */
325
326 HOWTO (R_TILEGX_GLOB_DAT, /* type */
327 0, /* rightshift */
328 0, /* size (0 = byte, 1 = short, 2 = long) */
329 0, /* bitsize */
330 FALSE, /* pc_relative */
331 0, /* bitpos */
332 complain_overflow_dont, /* complain_on_overflow */
333 bfd_elf_generic_reloc, /* special_function */
334 "R_TILEGX_GLOB_DAT", /* name */
335 FALSE, /* partial_inplace */
336 0, /* src_mask */
337 0, /* dst_mask */
338 TRUE), /* pcrel_offset */
339
340 HOWTO (R_TILEGX_JMP_SLOT, /* type */
341 0, /* rightshift */
342 0, /* size (0 = byte, 1 = short, 2 = long) */
343 0, /* bitsize */
344 FALSE, /* pc_relative */
345 0, /* bitpos */
346 complain_overflow_dont, /* complain_on_overflow */
347 bfd_elf_generic_reloc, /* special_function */
348 "R_TILEGX_JMP_SLOT", /* name */
349 FALSE, /* partial_inplace */
350 0, /* src_mask */
351 0, /* dst_mask */
352 TRUE), /* pcrel_offset */
353
354 HOWTO (R_TILEGX_RELATIVE, /* type */
355 0, /* rightshift */
356 0, /* size (0 = byte, 1 = short, 2 = long) */
357 0, /* bitsize */
358 FALSE, /* pc_relative */
359 0, /* bitpos */
360 complain_overflow_dont, /* complain_on_overflow */
361 bfd_elf_generic_reloc, /* special_function */
362 "R_TILEGX_RELATIVE", /* name */
363 FALSE, /* partial_inplace */
364 0, /* src_mask */
365 0, /* dst_mask */
366 TRUE), /* pcrel_offset */
367
368 HOWTO (R_TILEGX_BROFF_X1, /* type */
369 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
370 2, /* size (0 = byte, 1 = short, 2 = long) */
371 17, /* bitsize */
372 TRUE, /* pc_relative */
373 0, /* bitpos */
374 complain_overflow_signed, /* complain_on_overflow */
375 bfd_elf_generic_reloc, /* special_function */
376 "R_TILEGX_BROFF_X1", /* name */
377 FALSE, /* partial_inplace */
378 0, /* src_mask */
379 -1, /* dst_mask */
380 TRUE), /* pcrel_offset */
381
382 HOWTO (R_TILEGX_JUMPOFF_X1, /* type */
383 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
384 2, /* size (0 = byte, 1 = short, 2 = long) */
385 27, /* bitsize */
386 TRUE, /* pc_relative */
387 0, /* bitpos */
388 complain_overflow_signed,/* complain_on_overflow */
389 bfd_elf_generic_reloc, /* special_function */
390 "R_TILEGX_JUMPOFF_X1", /* name */
391 FALSE, /* partial_inplace */
392 0, /* src_mask */
393 -1, /* dst_mask */
394 TRUE), /* pcrel_offset */
395
396 HOWTO (R_TILEGX_JUMPOFF_X1_PLT, /* type */
397 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
398 2, /* size (0 = byte, 1 = short, 2 = long) */
399 27, /* bitsize */
400 TRUE, /* pc_relative */
401 0, /* bitpos */
402 complain_overflow_signed,/* complain_on_overflow */
403 bfd_elf_generic_reloc, /* special_function */
404 "R_TILEGX_JUMPOFF_X1_PLT", /* name */
405 FALSE, /* partial_inplace */
406 0, /* src_mask */
407 -1, /* dst_mask */
408 TRUE), /* pcrel_offset */
409
410 #define TILEGX_IMM_HOWTO(name, size, bitsize) \
411 HOWTO (name, 0, size, bitsize, FALSE, 0, \
412 complain_overflow_signed, bfd_elf_generic_reloc, \
413 #name, FALSE, 0, -1, FALSE)
414
415 #define TILEGX_UIMM_HOWTO(name, size, bitsize) \
416 HOWTO (name, 0, size, bitsize, FALSE, 0, \
417 complain_overflow_unsigned, bfd_elf_generic_reloc, \
418 #name, FALSE, 0, -1, FALSE)
419
420 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X0, 0, 8),
421 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0, 0, 8),
422 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1, 0, 8),
423 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1, 0, 8),
424 TILEGX_IMM_HOWTO(R_TILEGX_DEST_IMM8_X1, 0, 8),
425
426 TILEGX_UIMM_HOWTO(R_TILEGX_MT_IMM14_X1, 1, 14),
427 TILEGX_UIMM_HOWTO(R_TILEGX_MF_IMM14_X1, 1, 14),
428
429 TILEGX_UIMM_HOWTO(R_TILEGX_MMSTART_X0, 0, 6),
430 TILEGX_UIMM_HOWTO(R_TILEGX_MMEND_X0, 0, 6),
431
432 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_X0, 0, 6),
433 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_X1, 0, 6),
434 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_Y0, 0, 6),
435 TILEGX_UIMM_HOWTO(R_TILEGX_SHAMT_Y1, 0, 6),
436
437 #define TILEGX_IMM16_HOWTO(name, rshift) \
438 HOWTO (name, rshift, 1, 16, FALSE, 0, \
439 complain_overflow_dont, bfd_elf_generic_reloc, \
440 #name, FALSE, 0, 0xffff, FALSE)
441
442 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0, 0),
443 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0, 0),
444 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW1, 16),
445 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW1, 16),
446 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW2, 32),
447 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW2, 32),
448 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW3, 48),
449 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW3, 48),
450
451 #define TILEGX_IMM16_HOWTO_LAST(name, rshift) \
452 HOWTO (name, rshift, 1, 16, FALSE, 0, \
453 complain_overflow_signed, bfd_elf_generic_reloc, \
454 #name, FALSE, 0, 0xffff, FALSE)
455
456 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST, 0),
457 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST, 0),
458 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST, 16),
459 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST, 16),
460 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW2_LAST, 32),
461 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW2_LAST, 32),
462
463 /* PC-relative offsets. */
464
465 #define TILEGX_IMM16_HOWTO_PCREL(name, rshift) \
466 HOWTO (name, rshift, 1, 16, TRUE, 0, \
467 complain_overflow_dont, bfd_elf_generic_reloc, \
468 #name, FALSE, 0, 0xffff, TRUE)
469
470 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW0_PCREL, 0),
471 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW0_PCREL, 0),
472 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW1_PCREL, 16),
473 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW1_PCREL, 16),
474 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW2_PCREL, 32),
475 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW2_PCREL, 32),
476 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW3_PCREL, 48),
477 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW3_PCREL, 48),
478
479 #define TILEGX_IMM16_HOWTO_LAST_PCREL(name, rshift) \
480 HOWTO (name, rshift, 1, 16, TRUE, 0, \
481 complain_overflow_signed, bfd_elf_generic_reloc, \
482 #name, FALSE, 0, 0xffff, TRUE)
483
484 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW0_LAST_PCREL, 0),
485 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW0_LAST_PCREL, 0),
486 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW1_LAST_PCREL, 16),
487 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW1_LAST_PCREL, 16),
488 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW2_LAST_PCREL, 32),
489 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW2_LAST_PCREL, 32),
490
491 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0_GOT, 0),
492 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0_GOT, 0),
493
494 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW0_PLT_PCREL, 0),
495 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW0_PLT_PCREL, 0),
496 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW1_PLT_PCREL, 16),
497 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW1_PLT_PCREL, 16),
498 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW2_PLT_PCREL, 32),
499 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW2_PLT_PCREL, 32),
500
501 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST_GOT, 0),
502 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST_GOT, 0),
503 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST_GOT, 16),
504 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST_GOT, 16),
505
506 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X0_HW3_PLT_PCREL, 48),
507 TILEGX_IMM16_HOWTO_PCREL (R_TILEGX_IMM16_X1_HW3_PLT_PCREL, 48),
508
509 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0_TLS_GD, 0),
510 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0_TLS_GD, 0),
511
512 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X0_HW0_TLS_LE, 0),
513 TILEGX_IMM16_HOWTO (R_TILEGX_IMM16_X1_HW0_TLS_LE, 0),
514 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE, 0),
515 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE, 0),
516 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE, 16),
517 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE, 16),
518
519 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD, 0),
520 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD, 0),
521 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD, 16),
522 TILEGX_IMM16_HOWTO_LAST (R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD, 16),
523 EMPTY_HOWTO (90),
524 EMPTY_HOWTO (91),
525
526 #define TILEGX_IMM16_HOWTO_TLS_IE(name, rshift) \
527 HOWTO (name, rshift, 1, 16, FALSE, 0, \
528 complain_overflow_dont, bfd_elf_generic_reloc, \
529 #name, FALSE, 0, 0xffff, TRUE)
530
531 TILEGX_IMM16_HOWTO_TLS_IE (R_TILEGX_IMM16_X0_HW0_TLS_IE, 0),
532 TILEGX_IMM16_HOWTO_TLS_IE (R_TILEGX_IMM16_X1_HW0_TLS_IE, 0),
533
534 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL, 0),
535 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL, 0),
536 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL, 16),
537 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL, 16),
538 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL, 32),
539 TILEGX_IMM16_HOWTO_LAST_PCREL (R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL, 32),
540
541 #define TILEGX_IMM16_HOWTO_LAST_TLS_IE(name, rshift) \
542 HOWTO (name, rshift, 1, 16, FALSE, 0, \
543 complain_overflow_signed, bfd_elf_generic_reloc, \
544 #name, FALSE, 0, 0xffff, TRUE)
545
546 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE, 0),
547 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE, 0),
548 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE, 16),
549 TILEGX_IMM16_HOWTO_LAST_TLS_IE (R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE, 16),
550 EMPTY_HOWTO (104),
551 EMPTY_HOWTO (105),
552
553 HOWTO(R_TILEGX_TLS_DTPMOD64, 0, 0, 0, FALSE, 0, complain_overflow_dont,
554 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPMOD64",
555 FALSE, 0, 0, TRUE),
556 HOWTO(R_TILEGX_TLS_DTPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
557 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPOFF64",
558 FALSE, 0, -1, TRUE),
559 HOWTO(R_TILEGX_TLS_TPOFF64, 0, 0, 0, FALSE, 0, complain_overflow_dont,
560 bfd_elf_generic_reloc, "R_TILEGX_TLS_TPOFF64",
561 FALSE, 0, 0, TRUE),
562
563 HOWTO(R_TILEGX_TLS_DTPMOD32, 0, 0, 0, FALSE, 0, complain_overflow_dont,
564 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPMOD32",
565 FALSE, 0, 0, TRUE),
566 HOWTO(R_TILEGX_TLS_DTPOFF32, 0, 4, 32, FALSE, 0, complain_overflow_bitfield,
567 bfd_elf_generic_reloc, "R_TILEGX_TLS_DTPOFF32",
568 FALSE, 0, -1, TRUE),
569 HOWTO(R_TILEGX_TLS_TPOFF32, 0, 0, 0, FALSE, 0, complain_overflow_dont,
570 bfd_elf_generic_reloc, "R_TILEGX_TLS_TPOFF32",
571 FALSE, 0, 0, TRUE),
572
573 HOWTO (R_TILEGX_TLS_GD_CALL, /* type */
574 TILEGX_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
575 2, /* size (0 = byte, 1 = short, 2 = long) */
576 27, /* bitsize */
577 TRUE, /* pc_relative */
578 0, /* bitpos */
579 complain_overflow_signed,/* complain_on_overflow */
580 bfd_elf_generic_reloc, /* special_function */
581 "R_TILEGX_TLS_GD_CALL", /* name */
582 FALSE, /* partial_inplace */
583 0, /* src_mask */
584 -1, /* dst_mask */
585 TRUE), /* pcrel_offset */
586
587 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X0_TLS_GD_ADD, 0, 8),
588 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1_TLS_GD_ADD, 0, 8),
589 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0_TLS_GD_ADD, 0, 8),
590 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1_TLS_GD_ADD, 0, 8),
591 TILEGX_IMM_HOWTO(R_TILEGX_TLS_IE_LOAD, 0, 8),
592 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X0_TLS_ADD, 0, 8),
593 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_X1_TLS_ADD, 0, 8),
594 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y0_TLS_ADD, 0, 8),
595 TILEGX_IMM_HOWTO(R_TILEGX_IMM8_Y1_TLS_ADD, 0, 8),
596 };
597
598 static reloc_howto_type tilegx_elf_howto_table2 [] =
599 {
600 /* GNU extension to record C++ vtable hierarchy */
601 HOWTO (R_TILEGX_GNU_VTINHERIT, /* type */
602 0, /* rightshift */
603 4, /* size (0 = byte, 1 = short, 2 = long) */
604 0, /* bitsize */
605 FALSE, /* pc_relative */
606 0, /* bitpos */
607 complain_overflow_dont, /* complain_on_overflow */
608 NULL, /* special_function */
609 "R_TILEGX_GNU_VTINHERIT", /* name */
610 FALSE, /* partial_inplace */
611 0, /* src_mask */
612 0, /* dst_mask */
613 FALSE), /* pcrel_offset */
614
615 /* GNU extension to record C++ vtable member usage */
616 HOWTO (R_TILEGX_GNU_VTENTRY, /* type */
617 0, /* rightshift */
618 4, /* size (0 = byte, 1 = short, 2 = long) */
619 0, /* bitsize */
620 FALSE, /* pc_relative */
621 0, /* bitpos */
622 complain_overflow_dont, /* complain_on_overflow */
623 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
624 "R_TILEGX_GNU_VTENTRY", /* name */
625 FALSE, /* partial_inplace */
626 0, /* src_mask */
627 0, /* dst_mask */
628 FALSE), /* pcrel_offset */
629
630 };
631 \f
632 /* Map BFD reloc types to TILEGX ELF reloc types. */
633
634 typedef struct tilegx_reloc_map
635 {
636 bfd_reloc_code_real_type bfd_reloc_val;
637 unsigned int tilegx_reloc_val;
638 reloc_howto_type * table;
639 } reloc_map;
640
641 static const reloc_map tilegx_reloc_map [] =
642 {
643 #define TH_REMAP(bfd, tilegx) \
644 { bfd, tilegx, tilegx_elf_howto_table },
645
646 /* Standard relocations. */
647 TH_REMAP (BFD_RELOC_NONE, R_TILEGX_NONE)
648 TH_REMAP (BFD_RELOC_64, R_TILEGX_64)
649 TH_REMAP (BFD_RELOC_32, R_TILEGX_32)
650 TH_REMAP (BFD_RELOC_16, R_TILEGX_16)
651 TH_REMAP (BFD_RELOC_8, R_TILEGX_8)
652 TH_REMAP (BFD_RELOC_64_PCREL, R_TILEGX_64_PCREL)
653 TH_REMAP (BFD_RELOC_32_PCREL, R_TILEGX_32_PCREL)
654 TH_REMAP (BFD_RELOC_16_PCREL, R_TILEGX_16_PCREL)
655 TH_REMAP (BFD_RELOC_8_PCREL, R_TILEGX_8_PCREL)
656
657 #define SIMPLE_REMAP(t) TH_REMAP (BFD_RELOC_##t, R_##t)
658
659 /* Custom relocations. */
660 SIMPLE_REMAP (TILEGX_HW0)
661 SIMPLE_REMAP (TILEGX_HW1)
662 SIMPLE_REMAP (TILEGX_HW2)
663 SIMPLE_REMAP (TILEGX_HW3)
664 SIMPLE_REMAP (TILEGX_HW0_LAST)
665 SIMPLE_REMAP (TILEGX_HW1_LAST)
666 SIMPLE_REMAP (TILEGX_HW2_LAST)
667 SIMPLE_REMAP (TILEGX_COPY)
668 SIMPLE_REMAP (TILEGX_GLOB_DAT)
669 SIMPLE_REMAP (TILEGX_JMP_SLOT)
670 SIMPLE_REMAP (TILEGX_RELATIVE)
671 SIMPLE_REMAP (TILEGX_BROFF_X1)
672 SIMPLE_REMAP (TILEGX_JUMPOFF_X1)
673 SIMPLE_REMAP (TILEGX_JUMPOFF_X1_PLT)
674 SIMPLE_REMAP (TILEGX_IMM8_X0)
675 SIMPLE_REMAP (TILEGX_IMM8_Y0)
676 SIMPLE_REMAP (TILEGX_IMM8_X1)
677 SIMPLE_REMAP (TILEGX_IMM8_Y1)
678 SIMPLE_REMAP (TILEGX_DEST_IMM8_X1)
679 SIMPLE_REMAP (TILEGX_MT_IMM14_X1)
680 SIMPLE_REMAP (TILEGX_MF_IMM14_X1)
681 SIMPLE_REMAP (TILEGX_MMSTART_X0)
682 SIMPLE_REMAP (TILEGX_MMEND_X0)
683 SIMPLE_REMAP (TILEGX_SHAMT_X0)
684 SIMPLE_REMAP (TILEGX_SHAMT_X1)
685 SIMPLE_REMAP (TILEGX_SHAMT_Y0)
686 SIMPLE_REMAP (TILEGX_SHAMT_Y1)
687 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0)
688 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0)
689 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1)
690 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1)
691 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2)
692 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2)
693 SIMPLE_REMAP (TILEGX_IMM16_X0_HW3)
694 SIMPLE_REMAP (TILEGX_IMM16_X1_HW3)
695 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST)
696 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST)
697 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST)
698 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST)
699 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST)
700 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST)
701 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_PCREL)
702 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_PCREL)
703 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_PCREL)
704 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_PCREL)
705 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_PCREL)
706 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_PCREL)
707 SIMPLE_REMAP (TILEGX_IMM16_X0_HW3_PCREL)
708 SIMPLE_REMAP (TILEGX_IMM16_X1_HW3_PCREL)
709 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_PCREL)
710 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_PCREL)
711 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_PCREL)
712 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_PCREL)
713 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST_PCREL)
714 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST_PCREL)
715 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_GOT)
716 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_GOT)
717 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_PLT_PCREL)
718 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_PLT_PCREL)
719 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_PLT_PCREL)
720 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_PLT_PCREL)
721 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_PLT_PCREL)
722 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_PLT_PCREL)
723 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_GOT)
724 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_GOT)
725 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_GOT)
726 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_GOT)
727 SIMPLE_REMAP (TILEGX_IMM16_X0_HW3_PLT_PCREL)
728 SIMPLE_REMAP (TILEGX_IMM16_X1_HW3_PLT_PCREL)
729 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_GD)
730 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_GD)
731 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_LE)
732 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_LE)
733 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_LE)
734 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_LE)
735 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_LE)
736 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_LE)
737 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_GD)
738 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_GD)
739 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_GD)
740 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_GD)
741 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_TLS_IE)
742 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_TLS_IE)
743 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL)
744 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL)
745 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL)
746 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL)
747 SIMPLE_REMAP (TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL)
748 SIMPLE_REMAP (TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL)
749 SIMPLE_REMAP (TILEGX_IMM16_X0_HW0_LAST_TLS_IE)
750 SIMPLE_REMAP (TILEGX_IMM16_X1_HW0_LAST_TLS_IE)
751 SIMPLE_REMAP (TILEGX_IMM16_X0_HW1_LAST_TLS_IE)
752 SIMPLE_REMAP (TILEGX_IMM16_X1_HW1_LAST_TLS_IE)
753
754 SIMPLE_REMAP (TILEGX_TLS_DTPMOD64)
755 SIMPLE_REMAP (TILEGX_TLS_DTPOFF64)
756 SIMPLE_REMAP (TILEGX_TLS_TPOFF64)
757
758 SIMPLE_REMAP (TILEGX_TLS_DTPMOD32)
759 SIMPLE_REMAP (TILEGX_TLS_DTPOFF32)
760 SIMPLE_REMAP (TILEGX_TLS_TPOFF32)
761
762 SIMPLE_REMAP (TILEGX_TLS_GD_CALL)
763 SIMPLE_REMAP (TILEGX_IMM8_X0_TLS_GD_ADD)
764 SIMPLE_REMAP (TILEGX_IMM8_X1_TLS_GD_ADD)
765 SIMPLE_REMAP (TILEGX_IMM8_Y0_TLS_GD_ADD)
766 SIMPLE_REMAP (TILEGX_IMM8_Y1_TLS_GD_ADD)
767 SIMPLE_REMAP (TILEGX_TLS_IE_LOAD)
768 SIMPLE_REMAP (TILEGX_IMM8_X0_TLS_ADD)
769 SIMPLE_REMAP (TILEGX_IMM8_X1_TLS_ADD)
770 SIMPLE_REMAP (TILEGX_IMM8_Y0_TLS_ADD)
771 SIMPLE_REMAP (TILEGX_IMM8_Y1_TLS_ADD)
772
773 #undef SIMPLE_REMAP
774 #undef TH_REMAP
775
776 { BFD_RELOC_VTABLE_INHERIT, R_TILEGX_GNU_VTINHERIT, tilegx_elf_howto_table2 },
777 { BFD_RELOC_VTABLE_ENTRY, R_TILEGX_GNU_VTENTRY, tilegx_elf_howto_table2 },
778 };
779
780
781
782 /* The TILE-Gx linker needs to keep track of the number of relocs that it
783 decides to copy as dynamic relocs in check_relocs for each symbol.
784 This is so that it can later discard them if they are found to be
785 unnecessary. We store the information in a field extending the
786 regular ELF linker hash table. */
787
788 struct tilegx_elf_dyn_relocs
789 {
790 struct tilegx_elf_dyn_relocs *next;
791
792 /* The input section of the reloc. */
793 asection *sec;
794
795 /* Total number of relocs copied for the input section. */
796 bfd_size_type count;
797
798 /* Number of pc-relative relocs copied for the input section. */
799 bfd_size_type pc_count;
800 };
801
802 /* TILEGX ELF linker hash entry. */
803
804 struct tilegx_elf_link_hash_entry
805 {
806 struct elf_link_hash_entry elf;
807
808 /* Track dynamic relocs copied for this symbol. */
809 struct tilegx_elf_dyn_relocs *dyn_relocs;
810
811 #define GOT_UNKNOWN 0
812 #define GOT_NORMAL 1
813 #define GOT_TLS_GD 2
814 #define GOT_TLS_IE 4
815 unsigned char tls_type;
816 };
817
818 #define tilegx_elf_hash_entry(ent) \
819 ((struct tilegx_elf_link_hash_entry *)(ent))
820
821 struct _bfd_tilegx_elf_obj_tdata
822 {
823 struct elf_obj_tdata root;
824
825 /* tls_type for each local got entry. */
826 char *local_got_tls_type;
827 };
828
829 #define _bfd_tilegx_elf_tdata(abfd) \
830 ((struct _bfd_tilegx_elf_obj_tdata *) (abfd)->tdata.any)
831
832 #define _bfd_tilegx_elf_local_got_tls_type(abfd) \
833 (_bfd_tilegx_elf_tdata (abfd)->local_got_tls_type)
834
835 #define is_tilegx_elf(bfd) \
836 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
837 && elf_tdata (bfd) != NULL \
838 && elf_object_id (bfd) == TILEGX_ELF_DATA)
839
840 #include "elf/common.h"
841 #include "elf/internal.h"
842
843 struct tilegx_elf_link_hash_table
844 {
845 struct elf_link_hash_table elf;
846
847 int bytes_per_word;
848 int word_align_power;
849 int bytes_per_rela;
850 int dtpmod_reloc;
851 int dtpoff_reloc;
852 int tpoff_reloc;
853 bfd_vma (*r_info) (Elf_Internal_Rela *, bfd_vma, bfd_vma);
854 bfd_vma (*r_symndx) (bfd_vma);
855 void (*put_word) (bfd *, bfd_vma, void *);
856 const char *dynamic_interpreter;
857
858 /* Short-cuts to get to dynamic linker sections. */
859 asection *sdynbss;
860 asection *srelbss;
861
862 /* Whether LE transition has been disabled for some of the
863 sections. */
864 bfd_boolean disable_le_transition;
865
866 /* Small local sym to section mapping cache. */
867 struct sym_cache sym_cache;
868 };
869
870
871 /* Get the Tile ELF linker hash table from a link_info structure. */
872 #define tilegx_elf_hash_table(p) \
873 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
874 == TILEGX_ELF_DATA ? ((struct tilegx_elf_link_hash_table *) ((p)->hash)) : NULL)
875
876 #ifdef BFD64
877 static bfd_vma
878 tilegx_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
879 bfd_vma rel_index,
880 bfd_vma type)
881 {
882 return ELF64_R_INFO (rel_index, type);
883 }
884
885 static bfd_vma
886 tilegx_elf_r_symndx_64 (bfd_vma r_info)
887 {
888 return ELF64_R_SYM (r_info);
889 }
890
891 static void
892 tilegx_put_word_64 (bfd *abfd, bfd_vma val, void *ptr)
893 {
894 bfd_put_64 (abfd, val, ptr);
895 }
896 #endif /* BFD64 */
897
898 static bfd_vma
899 tilegx_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
900 bfd_vma rel_index,
901 bfd_vma type)
902 {
903 return ELF32_R_INFO (rel_index, type);
904 }
905
906 static bfd_vma
907 tilegx_elf_r_symndx_32 (bfd_vma r_info)
908 {
909 return ELF32_R_SYM (r_info);
910 }
911
912 static void
913 tilegx_put_word_32 (bfd *abfd, bfd_vma val, void *ptr)
914 {
915 bfd_put_32 (abfd, val, ptr);
916 }
917
918 reloc_howto_type *
919 tilegx_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
920 bfd_reloc_code_real_type code)
921 {
922 unsigned int i;
923
924 for (i = ARRAY_SIZE (tilegx_reloc_map); i--;)
925 {
926 const reloc_map * entry;
927
928 entry = tilegx_reloc_map + i;
929
930 if (entry->bfd_reloc_val == code)
931 return entry->table + (entry->tilegx_reloc_val
932 - entry->table[0].type);
933 }
934
935 return NULL;
936 }
937
938 reloc_howto_type *
939 tilegx_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
940 const char *r_name)
941 {
942 unsigned int i;
943
944 for (i = 0;
945 i < (sizeof (tilegx_elf_howto_table)
946 / sizeof (tilegx_elf_howto_table[0]));
947 i++)
948 if (tilegx_elf_howto_table[i].name != NULL
949 && strcasecmp (tilegx_elf_howto_table[i].name, r_name) == 0)
950 return &tilegx_elf_howto_table[i];
951
952 return NULL;
953 }
954
955 void
956 tilegx_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
957 arelent *cache_ptr,
958 Elf_Internal_Rela *dst)
959 {
960 unsigned int r_type = TILEGX_ELF_R_TYPE (dst->r_info);
961
962 if (r_type <= (unsigned int) R_TILEGX_IMM8_Y1_TLS_ADD)
963 cache_ptr->howto = &tilegx_elf_howto_table [r_type];
964 else if (r_type - R_TILEGX_GNU_VTINHERIT
965 <= (unsigned int) R_TILEGX_GNU_VTENTRY)
966 cache_ptr->howto
967 = &tilegx_elf_howto_table2 [r_type - R_TILEGX_GNU_VTINHERIT];
968 else
969 abort ();
970 }
971
972 typedef tilegx_bundle_bits (*tilegx_create_func)(int);
973
974 static const tilegx_create_func reloc_to_create_func[] =
975 {
976 /* The first twenty relocation types don't correspond to operands */
977 NULL,
978 NULL,
979 NULL,
980 NULL,
981 NULL,
982 NULL,
983 NULL,
984 NULL,
985 NULL,
986 NULL,
987 NULL,
988 NULL,
989 NULL,
990 NULL,
991 NULL,
992 NULL,
993 NULL,
994 NULL,
995 NULL,
996 NULL,
997
998 /* The remaining relocations are used for immediate operands */
999 create_BrOff_X1,
1000 create_JumpOff_X1,
1001 create_JumpOff_X1,
1002 create_Imm8_X0,
1003 create_Imm8_Y0,
1004 create_Imm8_X1,
1005 create_Imm8_Y1,
1006 create_Dest_Imm8_X1,
1007 create_MT_Imm14_X1,
1008 create_MF_Imm14_X1,
1009 create_BFStart_X0,
1010 create_BFEnd_X0,
1011 create_ShAmt_X0,
1012 create_ShAmt_X1,
1013 create_ShAmt_Y0,
1014 create_ShAmt_Y1,
1015 create_Imm16_X0,
1016 create_Imm16_X1,
1017 create_Imm16_X0,
1018 create_Imm16_X1,
1019 create_Imm16_X0,
1020 create_Imm16_X1,
1021 create_Imm16_X0,
1022 create_Imm16_X1,
1023 create_Imm16_X0,
1024 create_Imm16_X1,
1025 create_Imm16_X0,
1026 create_Imm16_X1,
1027 create_Imm16_X0,
1028 create_Imm16_X1,
1029 create_Imm16_X0,
1030 create_Imm16_X1,
1031 create_Imm16_X0,
1032 create_Imm16_X1,
1033 create_Imm16_X0,
1034 create_Imm16_X1,
1035 create_Imm16_X0,
1036 create_Imm16_X1,
1037 create_Imm16_X0,
1038 create_Imm16_X1,
1039 create_Imm16_X0,
1040 create_Imm16_X1,
1041 create_Imm16_X0,
1042 create_Imm16_X1,
1043 create_Imm16_X0,
1044 create_Imm16_X1,
1045 create_Imm16_X0,
1046 create_Imm16_X1,
1047 create_Imm16_X0,
1048 create_Imm16_X1,
1049 create_Imm16_X0,
1050 create_Imm16_X1,
1051 create_Imm16_X0,
1052 create_Imm16_X1,
1053 create_Imm16_X0,
1054 create_Imm16_X1,
1055 create_Imm16_X0,
1056 create_Imm16_X1,
1057 create_Imm16_X0,
1058 create_Imm16_X1,
1059 create_Imm16_X0,
1060 create_Imm16_X1,
1061 create_Imm16_X0,
1062 create_Imm16_X1,
1063 create_Imm16_X0,
1064 create_Imm16_X1,
1065 create_Imm16_X0,
1066 create_Imm16_X1,
1067 create_Imm16_X0,
1068 create_Imm16_X1,
1069 NULL,
1070 NULL,
1071 create_Imm16_X0,
1072 create_Imm16_X1,
1073 create_Imm16_X0,
1074 create_Imm16_X1,
1075 create_Imm16_X0,
1076 create_Imm16_X1,
1077 create_Imm16_X0,
1078 create_Imm16_X1,
1079 create_Imm16_X0,
1080 create_Imm16_X1,
1081 create_Imm16_X0,
1082 create_Imm16_X1,
1083 };
1084
1085 static void
1086 tilegx_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel)
1087 {
1088 const struct elf_backend_data *bed;
1089 bfd_byte *loc;
1090
1091 bed = get_elf_backend_data (abfd);
1092 loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela);
1093 bed->s->swap_reloca_out (abfd, rel, loc);
1094 }
1095
1096 /* PLT/GOT stuff */
1097
1098 /* The procedure linkage table starts with the following header:
1099
1100 ld_add r28, r27, 8
1101 ld r27, r27
1102 {
1103 jr r27
1104 info 10 ## SP not offset, return PC in LR
1105 }
1106
1107 Subsequent entries are the following, jumping to the header at the end:
1108
1109 {
1110 moveli r28, <_GLOBAL_OFFSET_TABLE_ - 1f + MY_GOT_OFFSET>
1111 lnk r26
1112 }
1113 1:
1114 {
1115 moveli r27, <_GLOBAL_OFFSET_TABLE_ - 1b>
1116 shl16insli r28, r28, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET>
1117 }
1118 {
1119 add r28, r26, r28
1120 shl16insli r27, r27, <_GLOBAL_OFFSET_TABLE_ - 1b>
1121 }
1122 {
1123 add r27, r26, r27
1124 ld r28, r28
1125 info 10 ## SP not offset, return PC in LR
1126 }
1127 {
1128 shl16insli r29, zero, MY_PLT_INDEX
1129 jr r28
1130 }
1131
1132 This code sequence lets the code at at the start of the PLT determine
1133 which PLT entry was executed by examining 'r29'.
1134
1135 Note that MY_PLT_INDEX skips over the header entries, so the first
1136 actual jump table entry has index zero.
1137
1138 If the offset fits in 16 bits,
1139
1140 lnk r26
1141 1:
1142 {
1143 addli r28, r26, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET>
1144 moveli r27, <_GLOBAL_OFFSET_TABLE_ - 1b>
1145 }
1146 {
1147 shl16insli r29, zero, MY_PLT_INDEX
1148 ld r28, r28
1149 }
1150 {
1151 add r27, r26, r27
1152 jr r28
1153 }
1154 info 10 ## SP not offset, return PC in LR
1155
1156 For the purpose of backtracing, the procedure linkage table ends with the
1157 following tail entry:
1158
1159 info 10 ## SP not offset, return PC in LR
1160
1161 The 32-bit versions are similar, with ld4s replacing ld, and offsets into
1162 the GOT being multiples of 4 instead of 8.
1163
1164 */
1165
1166 #define PLT_HEADER_SIZE_IN_BUNDLES 3
1167 #define PLT_ENTRY_SIZE_IN_BUNDLES 5
1168 #define PLT_TAIL_SIZE_IN_BUNDLES 1
1169
1170 #define PLT_HEADER_SIZE \
1171 (PLT_HEADER_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES)
1172 #define PLT_ENTRY_SIZE \
1173 (PLT_ENTRY_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES)
1174 #define PLT_TAIL_SIZE \
1175 (PLT_TAIL_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES)
1176
1177 #define GOT_ENTRY_SIZE(htab) TILEGX_ELF_WORD_BYTES (htab)
1178
1179 #define GOTPLT_HEADER_SIZE(htab) (2 * GOT_ENTRY_SIZE (htab))
1180
1181 static const bfd_byte
1182 tilegx64_plt0_entry[PLT_HEADER_SIZE] =
1183 {
1184 0x00, 0x30, 0x48, 0x51,
1185 0x6e, 0x43, 0xa0, 0x18, /* { ld_add r28, r27, 8 } */
1186 0x00, 0x30, 0xbc, 0x35,
1187 0x00, 0x40, 0xde, 0x9e, /* { ld r27, r27 } */
1188 0xff, 0xaf, 0x30, 0x40,
1189 0x60, 0x73, 0x6a, 0x28, /* { info 10 ; jr r27 } */
1190 };
1191
1192 static const bfd_byte
1193 tilegx64_long_plt_entry[PLT_ENTRY_SIZE] =
1194 {
1195 0xdc, 0x0f, 0x00, 0x10,
1196 0x0d, 0xf0, 0x6a, 0x28, /* { moveli r28, 0 ; lnk r26 } */
1197 0xdb, 0x0f, 0x00, 0x10,
1198 0x8e, 0x03, 0x00, 0x38, /* { moveli r27, 0 ; shl16insli r28, r28, 0 } */
1199 0x9c, 0xc6, 0x0d, 0xd0,
1200 0x6d, 0x03, 0x00, 0x38, /* { add r28, r26, r28 ; shl16insli r27, r27, 0 } */
1201 0x9b, 0xb6, 0xc5, 0xad,
1202 0xff, 0x57, 0xe0, 0x8e, /* { add r27, r26, r27 ; info 10 ; ld r28, r28 } */
1203 0xdd, 0x0f, 0x00, 0x70,
1204 0x80, 0x73, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; jr r28 } */
1205 };
1206
1207 static const bfd_byte
1208 tilegx64_short_plt_entry[PLT_ENTRY_SIZE] =
1209 {
1210 0x00, 0x30, 0x48, 0x51,
1211 0x0d, 0xf0, 0x6a, 0x28, /* { lnk r26 } */
1212 0x9c, 0x06, 0x00, 0x90,
1213 0xed, 0x07, 0x00, 0x00, /* { addli r28, r26, 0 ; moveli r27, 0 } */
1214 0xdd, 0x0f, 0x00, 0x70,
1215 0x8e, 0xeb, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; ld r28, r28 } */
1216 0x9b, 0xb6, 0x0d, 0x50,
1217 0x80, 0x73, 0x6a, 0x28, /* { add r27, r26, r27 ; jr r28 } */
1218 0x00, 0x30, 0x48, 0xd1,
1219 0xff, 0x57, 0x18, 0x18, /* { info 10 } */
1220 };
1221
1222 /* Reuse an existing info 10 bundle. */
1223 static const bfd_byte *const tilegx64_plt_tail_entry =
1224 &tilegx64_short_plt_entry[4 * TILEGX_BUNDLE_SIZE_IN_BYTES];
1225
1226 static const bfd_byte
1227 tilegx32_plt0_entry[PLT_HEADER_SIZE] =
1228 {
1229 0x00, 0x30, 0x48, 0x51,
1230 0x6e, 0x23, 0x58, 0x18, /* { ld4s_add r28, r27, 4 } */
1231 0x00, 0x30, 0xbc, 0x35,
1232 0x00, 0x40, 0xde, 0x9c, /* { ld4s r27, r27 } */
1233 0xff, 0xaf, 0x30, 0x40,
1234 0x60, 0x73, 0x6a, 0x28, /* { info 10 ; jr r27 } */
1235 };
1236
1237 static const bfd_byte
1238 tilegx32_long_plt_entry[PLT_ENTRY_SIZE] =
1239 {
1240 0xdc, 0x0f, 0x00, 0x10,
1241 0x0d, 0xf0, 0x6a, 0x28, /* { moveli r28, 0 ; lnk r26 } */
1242 0xdb, 0x0f, 0x00, 0x10,
1243 0x8e, 0x03, 0x00, 0x38, /* { moveli r27, 0 ; shl16insli r28, r28, 0 } */
1244 0x9c, 0xc6, 0x0d, 0xd0,
1245 0x6d, 0x03, 0x00, 0x38, /* { add r28, r26, r28 ; shl16insli r27, r27, 0 } */
1246 0x9b, 0xb6, 0xc5, 0xad,
1247 0xff, 0x57, 0xe0, 0x8c, /* { add r27, r26, r27 ; info 10 ; ld4s r28, r28 } */
1248 0xdd, 0x0f, 0x00, 0x70,
1249 0x80, 0x73, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; jr r28 } */
1250 };
1251
1252 static const bfd_byte
1253 tilegx32_short_plt_entry[PLT_ENTRY_SIZE] =
1254 {
1255 0x00, 0x30, 0x48, 0x51,
1256 0x0d, 0xf0, 0x6a, 0x28, /* { lnk r26 } */
1257 0x9c, 0x06, 0x00, 0x90,
1258 0xed, 0x07, 0x00, 0x00, /* { addli r28, r26, 0 ; moveli r27, 0 } */
1259 0xdd, 0x0f, 0x00, 0x70,
1260 0x8e, 0x9b, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; ld4s r28, r28 } */
1261 0x9b, 0xb6, 0x0d, 0x50,
1262 0x80, 0x73, 0x6a, 0x28, /* { add r27, r26, r27 ; jr r28 } */
1263 0x00, 0x30, 0x48, 0xd1,
1264 0xff, 0x57, 0x18, 0x18, /* { info 10 } */
1265 };
1266
1267 /* Reuse an existing info 10 bundle. */
1268 static const bfd_byte *const tilegx32_plt_tail_entry =
1269 &tilegx64_short_plt_entry[4 * TILEGX_BUNDLE_SIZE_IN_BYTES];
1270
1271 static int
1272 tilegx_plt_entry_build (bfd *output_bfd,
1273 struct tilegx_elf_link_hash_table *htab,
1274 asection *splt, asection *sgotplt,
1275 bfd_vma offset, bfd_vma *r_offset)
1276 {
1277 int plt_index = (offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE;
1278 int got_offset = (plt_index * GOT_ENTRY_SIZE (htab)
1279 + GOTPLT_HEADER_SIZE (htab));
1280 tilegx_bundle_bits *pc;
1281
1282 /* Compute the distance from the got entry to the lnk. */
1283 bfd_signed_vma dist_got_entry = sgotplt->output_section->vma
1284 + sgotplt->output_offset
1285 + got_offset
1286 - splt->output_section->vma
1287 - splt->output_offset
1288 - offset
1289 - TILEGX_BUNDLE_SIZE_IN_BYTES;
1290
1291 /* Compute the distance to GOTPLT[0]. */
1292 bfd_signed_vma dist_got0 = dist_got_entry - got_offset;
1293
1294 /* Check whether we can use the short plt entry with 16-bit offset. */
1295 bfd_boolean short_plt_entry =
1296 (dist_got_entry <= 0x7fff && dist_got0 >= -0x8000);
1297
1298 const tilegx_bundle_bits *plt_entry = (tilegx_bundle_bits *)
1299 (ABI_64_P (output_bfd) ?
1300 (short_plt_entry ? tilegx64_short_plt_entry : tilegx64_long_plt_entry) :
1301 (short_plt_entry ? tilegx32_short_plt_entry : tilegx32_long_plt_entry));
1302
1303 /* Copy the plt entry template. */
1304 memcpy (splt->contents + offset, plt_entry, PLT_ENTRY_SIZE);
1305
1306 /* Write the immediate offsets. */
1307 pc = (tilegx_bundle_bits *)(splt->contents + offset);
1308
1309 if (short_plt_entry)
1310 {
1311 /* { lnk r28 } */
1312 pc++;
1313
1314 /* { addli r28, r28, &GOTPLT[MY_GOT_INDEX] ; moveli r27, &GOTPLT[0] } */
1315 *pc++ |= create_Imm16_X0 (dist_got_entry)
1316 | create_Imm16_X1 (dist_got0);
1317
1318 /* { shl16insli r29, zero, MY_PLT_INDEX ; ld r28, r28 } */
1319 *pc++ |= create_Imm16_X0 (plt_index);
1320 }
1321 else
1322 {
1323 /* { moveli r28, &GOTPLT[MY_GOT_INDEX] ; lnk r26 } */
1324 *pc++ |= create_Imm16_X0 (dist_got_entry >> 16);
1325
1326 /* { moveli r27, &GOTPLT[0] ;
1327 shl16insli r28, r28, &GOTPLT[MY_GOT_INDEX] } */
1328 *pc++ |= create_Imm16_X0 (dist_got0 >> 16)
1329 | create_Imm16_X1 (dist_got_entry);
1330
1331 /* { add r28, r26, r28 ; shl16insli r27, r27, &GOTPLT[0] } */
1332 *pc++ |= create_Imm16_X1 (dist_got0);
1333
1334 /* { add r27, r26, r27 ; info 10 ; ld r28, r28 } */
1335 pc++;
1336
1337 /* { shl16insli r29, zero, MY_GOT_INDEX ; jr r28 } */
1338 *pc++ |= create_Imm16_X0 (plt_index);
1339 }
1340
1341 /* Set the relocation offset. */
1342 *r_offset = got_offset;
1343
1344 return plt_index;
1345 }
1346
1347 /* Create an entry in an TILEGX ELF linker hash table. */
1348
1349 static struct bfd_hash_entry *
1350 link_hash_newfunc (struct bfd_hash_entry *entry,
1351 struct bfd_hash_table *table, const char *string)
1352 {
1353 /* Allocate the structure if it has not already been allocated by a
1354 subclass. */
1355 if (entry == NULL)
1356 {
1357 entry =
1358 bfd_hash_allocate (table,
1359 sizeof (struct tilegx_elf_link_hash_entry));
1360 if (entry == NULL)
1361 return entry;
1362 }
1363
1364 /* Call the allocation method of the superclass. */
1365 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1366 if (entry != NULL)
1367 {
1368 struct tilegx_elf_link_hash_entry *eh;
1369
1370 eh = (struct tilegx_elf_link_hash_entry *) entry;
1371 eh->dyn_relocs = NULL;
1372 eh->tls_type = GOT_UNKNOWN;
1373 }
1374
1375 return entry;
1376 }
1377
1378 /* Create a TILEGX ELF linker hash table. */
1379
1380 struct bfd_link_hash_table *
1381 tilegx_elf_link_hash_table_create (bfd *abfd)
1382 {
1383 struct tilegx_elf_link_hash_table *ret;
1384 bfd_size_type amt = sizeof (struct tilegx_elf_link_hash_table);
1385
1386 ret = (struct tilegx_elf_link_hash_table *) bfd_zmalloc (amt);
1387 if (ret == NULL)
1388 return NULL;
1389
1390 #ifdef BFD64
1391 if (ABI_64_P (abfd))
1392 {
1393 ret->bytes_per_word = 8;
1394 ret->word_align_power = 3;
1395 ret->bytes_per_rela = sizeof (Elf64_External_Rela);
1396 ret->dtpoff_reloc = R_TILEGX_TLS_DTPOFF64;
1397 ret->dtpmod_reloc = R_TILEGX_TLS_DTPMOD64;
1398 ret->tpoff_reloc = R_TILEGX_TLS_TPOFF64;
1399 ret->r_info = tilegx_elf_r_info_64;
1400 ret->r_symndx = tilegx_elf_r_symndx_64;
1401 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER;
1402 ret->put_word = tilegx_put_word_64;
1403 }
1404 else
1405 #endif
1406 {
1407 ret->bytes_per_word = 4;
1408 ret->word_align_power = 2;
1409 ret->bytes_per_rela = sizeof (Elf32_External_Rela);
1410 ret->dtpoff_reloc = R_TILEGX_TLS_DTPOFF32;
1411 ret->dtpmod_reloc = R_TILEGX_TLS_DTPMOD32;
1412 ret->tpoff_reloc = R_TILEGX_TLS_TPOFF32;
1413 ret->r_info = tilegx_elf_r_info_32;
1414 ret->r_symndx = tilegx_elf_r_symndx_32;
1415 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER;
1416 ret->put_word = tilegx_put_word_32;
1417 }
1418
1419 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
1420 sizeof (struct tilegx_elf_link_hash_entry),
1421 TILEGX_ELF_DATA))
1422 {
1423 free (ret);
1424 return NULL;
1425 }
1426
1427 return &ret->elf.root;
1428 }
1429
1430 /* Create the .got section. */
1431
1432 static bfd_boolean
1433 tilegx_elf_create_got_section (bfd *abfd, struct bfd_link_info *info)
1434 {
1435 flagword flags;
1436 asection *s, *s_got;
1437 struct elf_link_hash_entry *h;
1438 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1439 struct elf_link_hash_table *htab = elf_hash_table (info);
1440
1441 /* This function may be called more than once. */
1442 if (htab->sgot != NULL)
1443 return TRUE;
1444
1445 flags = bed->dynamic_sec_flags;
1446
1447 s = bfd_make_section_anyway_with_flags (abfd,
1448 (bed->rela_plts_and_copies_p
1449 ? ".rela.got" : ".rel.got"),
1450 (bed->dynamic_sec_flags
1451 | SEC_READONLY));
1452 if (s == NULL
1453 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
1454 return FALSE;
1455 htab->srelgot = s;
1456
1457 s = s_got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
1458 if (s == NULL
1459 || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
1460 return FALSE;
1461 htab->sgot = s;
1462
1463 /* The first bit of the global offset table is the header. */
1464 s->size += bed->got_header_size;
1465
1466 if (bed->want_got_plt)
1467 {
1468 s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags);
1469 if (s == NULL
1470 || !bfd_set_section_alignment (abfd, s,
1471 bed->s->log_file_align))
1472 return FALSE;
1473 htab->sgotplt = s;
1474
1475 /* Reserve room for the header. */
1476 s->size += GOTPLT_HEADER_SIZE (tilegx_elf_hash_table (info));
1477 }
1478
1479 if (bed->want_got_sym)
1480 {
1481 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
1482 section. We don't do this in the linker script because we don't want
1483 to define the symbol if we are not creating a global offset
1484 table. */
1485 h = _bfd_elf_define_linkage_sym (abfd, info, s_got,
1486 "_GLOBAL_OFFSET_TABLE_");
1487 elf_hash_table (info)->hgot = h;
1488 if (h == NULL)
1489 return FALSE;
1490 }
1491
1492 return TRUE;
1493 }
1494
1495 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
1496 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
1497 hash table. */
1498
1499 bfd_boolean
1500 tilegx_elf_create_dynamic_sections (bfd *dynobj,
1501 struct bfd_link_info *info)
1502 {
1503 struct tilegx_elf_link_hash_table *htab;
1504
1505 htab = tilegx_elf_hash_table (info);
1506 BFD_ASSERT (htab != NULL);
1507
1508 if (!tilegx_elf_create_got_section (dynobj, info))
1509 return FALSE;
1510
1511 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
1512 return FALSE;
1513
1514 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
1515 if (!bfd_link_pic (info))
1516 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
1517
1518 if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
1519 || (!bfd_link_pic (info) && !htab->srelbss))
1520 abort ();
1521
1522 return TRUE;
1523 }
1524
1525 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1526
1527 void
1528 tilegx_elf_copy_indirect_symbol (struct bfd_link_info *info,
1529 struct elf_link_hash_entry *dir,
1530 struct elf_link_hash_entry *ind)
1531 {
1532 struct tilegx_elf_link_hash_entry *edir, *eind;
1533
1534 edir = (struct tilegx_elf_link_hash_entry *) dir;
1535 eind = (struct tilegx_elf_link_hash_entry *) ind;
1536
1537 if (eind->dyn_relocs != NULL)
1538 {
1539 if (edir->dyn_relocs != NULL)
1540 {
1541 struct tilegx_elf_dyn_relocs **pp;
1542 struct tilegx_elf_dyn_relocs *p;
1543
1544 /* Add reloc counts against the indirect sym to the direct sym
1545 list. Merge any entries against the same section. */
1546 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1547 {
1548 struct tilegx_elf_dyn_relocs *q;
1549
1550 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1551 if (q->sec == p->sec)
1552 {
1553 q->pc_count += p->pc_count;
1554 q->count += p->count;
1555 *pp = p->next;
1556 break;
1557 }
1558 if (q == NULL)
1559 pp = &p->next;
1560 }
1561 *pp = edir->dyn_relocs;
1562 }
1563
1564 edir->dyn_relocs = eind->dyn_relocs;
1565 eind->dyn_relocs = NULL;
1566 }
1567
1568 if (ind->root.type == bfd_link_hash_indirect
1569 && dir->got.refcount <= 0)
1570 {
1571 edir->tls_type = eind->tls_type;
1572 eind->tls_type = GOT_UNKNOWN;
1573 }
1574 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1575 }
1576
1577 static int
1578 tilegx_tls_translate_to_le (int r_type)
1579 {
1580 switch (r_type)
1581 {
1582 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
1583 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
1584 return R_TILEGX_IMM16_X0_HW0_TLS_LE;
1585
1586 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
1587 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
1588 return R_TILEGX_IMM16_X1_HW0_TLS_LE;
1589
1590 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
1591 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
1592 return R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE;
1593
1594 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
1595 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
1596 return R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE;
1597
1598 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
1599 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
1600 return R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE;
1601
1602 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
1603 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
1604 return R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE;
1605 }
1606 return r_type;
1607 }
1608
1609 static int
1610 tilegx_tls_translate_to_ie (int r_type)
1611 {
1612 switch (r_type)
1613 {
1614 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
1615 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
1616 return R_TILEGX_IMM16_X0_HW0_TLS_IE;
1617
1618 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
1619 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
1620 return R_TILEGX_IMM16_X1_HW0_TLS_IE;
1621
1622 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
1623 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
1624 return R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE;
1625
1626 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
1627 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
1628 return R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE;
1629
1630 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
1631 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
1632 return R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE;
1633
1634 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
1635 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
1636 return R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE;
1637 }
1638 return r_type;
1639 }
1640
1641 static int
1642 tilegx_elf_tls_transition (struct bfd_link_info *info, int r_type,
1643 int is_local, bfd_boolean disable_le_transition)
1644 {
1645 if (bfd_link_pic (info))
1646 return r_type;
1647
1648 if (is_local && !disable_le_transition)
1649 return tilegx_tls_translate_to_le (r_type);
1650 else
1651 return tilegx_tls_translate_to_ie (r_type);
1652 }
1653
1654 /* Look through the relocs for a section during the first phase, and
1655 allocate space in the global offset table or procedure linkage
1656 table. */
1657
1658 bfd_boolean
1659 tilegx_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
1660 asection *sec, const Elf_Internal_Rela *relocs)
1661 {
1662 struct tilegx_elf_link_hash_table *htab;
1663 Elf_Internal_Shdr *symtab_hdr;
1664 struct elf_link_hash_entry **sym_hashes;
1665 const Elf_Internal_Rela *rel;
1666 const Elf_Internal_Rela *rel_end;
1667 asection *sreloc;
1668 int num_relocs;
1669 bfd_boolean has_tls_gd_or_ie = FALSE, has_tls_add = FALSE;
1670
1671 if (bfd_link_relocatable (info))
1672 return TRUE;
1673
1674 htab = tilegx_elf_hash_table (info);
1675 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1676 sym_hashes = elf_sym_hashes (abfd);
1677
1678 sreloc = NULL;
1679
1680 num_relocs = sec->reloc_count;
1681
1682 BFD_ASSERT (is_tilegx_elf (abfd) || num_relocs == 0);
1683
1684 if (htab->elf.dynobj == NULL)
1685 htab->elf.dynobj = abfd;
1686
1687 rel_end = relocs + num_relocs;
1688
1689 /* Check whether to do optimization to transform TLS GD/IE
1690 referehces to TLS LE. We disable it if we're linking with old
1691 TLS code sequences that do not support such optimization. Old
1692 TLS code sequences have tls_gd_call/tls_ie_load relocations but
1693 no tls_add relocations. */
1694 for (rel = relocs; rel < rel_end && !has_tls_add; rel++)
1695 {
1696 int r_type = TILEGX_ELF_R_TYPE (rel->r_info);
1697 switch (r_type)
1698 {
1699 case R_TILEGX_TLS_GD_CALL:
1700 case R_TILEGX_TLS_IE_LOAD:
1701 has_tls_gd_or_ie = TRUE;
1702 break;
1703 case R_TILEGX_IMM8_X0_TLS_ADD:
1704 case R_TILEGX_IMM8_Y0_TLS_ADD:
1705 case R_TILEGX_IMM8_X1_TLS_ADD:
1706 case R_TILEGX_IMM8_Y1_TLS_ADD:
1707 has_tls_add = TRUE;
1708 break;
1709 }
1710 }
1711
1712 sec->sec_flg0 = (has_tls_gd_or_ie && !has_tls_add);
1713 htab->disable_le_transition |= sec->sec_flg0;
1714
1715 for (rel = relocs; rel < rel_end; rel++)
1716 {
1717 unsigned int r_type;
1718 unsigned long r_symndx;
1719 struct elf_link_hash_entry *h;
1720 int tls_type;
1721
1722 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info);
1723 r_type = TILEGX_ELF_R_TYPE (rel->r_info);
1724
1725 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1726 {
1727 /* xgettext:c-format */
1728 _bfd_error_handler (_("%B: bad symbol index: %d"),
1729 abfd, r_symndx);
1730 return FALSE;
1731 }
1732
1733 if (r_symndx < symtab_hdr->sh_info)
1734 h = NULL;
1735 else
1736 {
1737 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1738 while (h->root.type == bfd_link_hash_indirect
1739 || h->root.type == bfd_link_hash_warning)
1740 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1741
1742 /* PR15323, ref flags aren't set for references in the same
1743 object. */
1744 h->root.non_ir_ref = 1;
1745 }
1746
1747 r_type = tilegx_elf_tls_transition (info, r_type, h == NULL,
1748 sec->sec_flg0);
1749 switch (r_type)
1750 {
1751 case R_TILEGX_IMM16_X0_HW0_TLS_LE:
1752 case R_TILEGX_IMM16_X1_HW0_TLS_LE:
1753 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE:
1754 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE:
1755 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE:
1756 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE:
1757 if (bfd_link_pic (info))
1758 goto r_tilegx_plt32;
1759 break;
1760
1761 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
1762 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
1763 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
1764 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
1765 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
1766 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
1767 BFD_ASSERT (bfd_link_pic (info));
1768 tls_type = GOT_TLS_GD;
1769 goto have_got_reference;
1770
1771 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
1772 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
1773 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
1774 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
1775 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
1776 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
1777 tls_type = GOT_TLS_IE;
1778 if (bfd_link_pic (info))
1779 info->flags |= DF_STATIC_TLS;
1780 goto have_got_reference;
1781
1782 case R_TILEGX_IMM16_X0_HW0_GOT:
1783 case R_TILEGX_IMM16_X1_HW0_GOT:
1784 case R_TILEGX_IMM16_X0_HW0_LAST_GOT:
1785 case R_TILEGX_IMM16_X1_HW0_LAST_GOT:
1786 case R_TILEGX_IMM16_X0_HW1_LAST_GOT:
1787 case R_TILEGX_IMM16_X1_HW1_LAST_GOT:
1788 tls_type = GOT_NORMAL;
1789 /* Fall Through */
1790
1791 have_got_reference:
1792 /* This symbol requires a global offset table entry. */
1793 {
1794 int old_tls_type;
1795
1796 if (h != NULL)
1797 {
1798 h->got.refcount += 1;
1799 old_tls_type = tilegx_elf_hash_entry(h)->tls_type;
1800 }
1801 else
1802 {
1803 bfd_signed_vma *local_got_refcounts;
1804
1805 /* This is a global offset table entry for a local symbol. */
1806 local_got_refcounts = elf_local_got_refcounts (abfd);
1807 if (local_got_refcounts == NULL)
1808 {
1809 bfd_size_type size;
1810
1811 size = symtab_hdr->sh_info;
1812 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1813 local_got_refcounts = ((bfd_signed_vma *)
1814 bfd_zalloc (abfd, size));
1815 if (local_got_refcounts == NULL)
1816 return FALSE;
1817 elf_local_got_refcounts (abfd) = local_got_refcounts;
1818 _bfd_tilegx_elf_local_got_tls_type (abfd)
1819 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1820 }
1821 local_got_refcounts[r_symndx] += 1;
1822 old_tls_type = _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx];
1823 }
1824
1825 /* If a TLS symbol is accessed using IE at least once,
1826 there is no point to use dynamic model for it. */
1827 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1828 && (old_tls_type != GOT_TLS_GD
1829 || tls_type != GOT_TLS_IE))
1830 {
1831 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
1832 tls_type = old_tls_type;
1833 else
1834 {
1835 _bfd_error_handler
1836 /* xgettext:c-format */
1837 (_("%B: `%s' accessed both as normal and thread local symbol"),
1838 abfd, h ? h->root.root.string : "<local>");
1839 return FALSE;
1840 }
1841 }
1842
1843 if (old_tls_type != tls_type)
1844 {
1845 if (h != NULL)
1846 tilegx_elf_hash_entry (h)->tls_type = tls_type;
1847 else
1848 _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
1849 }
1850 }
1851
1852 if (htab->elf.sgot == NULL)
1853 {
1854 if (!tilegx_elf_create_got_section (htab->elf.dynobj, info))
1855 return FALSE;
1856 }
1857 break;
1858
1859 case R_TILEGX_TLS_GD_CALL:
1860 if (bfd_link_pic (info))
1861 {
1862 /* These are basically R_TILEGX_JUMPOFF_X1_PLT relocs
1863 against __tls_get_addr. */
1864 struct bfd_link_hash_entry *bh = NULL;
1865 if (! _bfd_generic_link_add_one_symbol (info, abfd,
1866 "__tls_get_addr", 0,
1867 bfd_und_section_ptr, 0,
1868 NULL, FALSE, FALSE,
1869 &bh))
1870 return FALSE;
1871 h = (struct elf_link_hash_entry *) bh;
1872 }
1873 else
1874 break;
1875 /* Fall through */
1876
1877 case R_TILEGX_JUMPOFF_X1_PLT:
1878 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL:
1879 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL:
1880 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL:
1881 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL:
1882 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL:
1883 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL:
1884 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL:
1885 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL:
1886 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL:
1887 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL:
1888 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL:
1889 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL:
1890 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL:
1891 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL:
1892 /* This symbol requires a procedure linkage table entry. We
1893 actually build the entry in adjust_dynamic_symbol,
1894 because this might be a case of linking PIC code without
1895 linking in any dynamic objects, in which case we don't
1896 need to generate a procedure linkage table after all. */
1897
1898 if (h != NULL)
1899 {
1900 h->needs_plt = 1;
1901 h->plt.refcount += 1;
1902 }
1903 break;
1904
1905 case R_TILEGX_64_PCREL:
1906 case R_TILEGX_32_PCREL:
1907 case R_TILEGX_16_PCREL:
1908 case R_TILEGX_8_PCREL:
1909 case R_TILEGX_IMM16_X0_HW0_PCREL:
1910 case R_TILEGX_IMM16_X1_HW0_PCREL:
1911 case R_TILEGX_IMM16_X0_HW1_PCREL:
1912 case R_TILEGX_IMM16_X1_HW1_PCREL:
1913 case R_TILEGX_IMM16_X0_HW2_PCREL:
1914 case R_TILEGX_IMM16_X1_HW2_PCREL:
1915 case R_TILEGX_IMM16_X0_HW3_PCREL:
1916 case R_TILEGX_IMM16_X1_HW3_PCREL:
1917 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL:
1918 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL:
1919 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL:
1920 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL:
1921 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL:
1922 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL:
1923 if (h != NULL)
1924 h->non_got_ref = 1;
1925
1926 if (h != NULL
1927 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1928 break;
1929 /* Fall through. */
1930
1931 case R_TILEGX_64:
1932 case R_TILEGX_32:
1933 case R_TILEGX_16:
1934 case R_TILEGX_8:
1935 case R_TILEGX_HW0:
1936 case R_TILEGX_HW1:
1937 case R_TILEGX_HW2:
1938 case R_TILEGX_HW3:
1939 case R_TILEGX_HW0_LAST:
1940 case R_TILEGX_HW1_LAST:
1941 case R_TILEGX_HW2_LAST:
1942 case R_TILEGX_COPY:
1943 case R_TILEGX_GLOB_DAT:
1944 case R_TILEGX_JMP_SLOT:
1945 case R_TILEGX_RELATIVE:
1946 case R_TILEGX_BROFF_X1:
1947 case R_TILEGX_JUMPOFF_X1:
1948 case R_TILEGX_IMM8_X0:
1949 case R_TILEGX_IMM8_Y0:
1950 case R_TILEGX_IMM8_X1:
1951 case R_TILEGX_IMM8_Y1:
1952 case R_TILEGX_DEST_IMM8_X1:
1953 case R_TILEGX_MT_IMM14_X1:
1954 case R_TILEGX_MF_IMM14_X1:
1955 case R_TILEGX_MMSTART_X0:
1956 case R_TILEGX_MMEND_X0:
1957 case R_TILEGX_SHAMT_X0:
1958 case R_TILEGX_SHAMT_X1:
1959 case R_TILEGX_SHAMT_Y0:
1960 case R_TILEGX_SHAMT_Y1:
1961 case R_TILEGX_IMM16_X0_HW0:
1962 case R_TILEGX_IMM16_X1_HW0:
1963 case R_TILEGX_IMM16_X0_HW1:
1964 case R_TILEGX_IMM16_X1_HW1:
1965 case R_TILEGX_IMM16_X0_HW2:
1966 case R_TILEGX_IMM16_X1_HW2:
1967 case R_TILEGX_IMM16_X0_HW3:
1968 case R_TILEGX_IMM16_X1_HW3:
1969 case R_TILEGX_IMM16_X0_HW0_LAST:
1970 case R_TILEGX_IMM16_X1_HW0_LAST:
1971 case R_TILEGX_IMM16_X0_HW1_LAST:
1972 case R_TILEGX_IMM16_X1_HW1_LAST:
1973 case R_TILEGX_IMM16_X0_HW2_LAST:
1974 case R_TILEGX_IMM16_X1_HW2_LAST:
1975 if (h != NULL)
1976 h->non_got_ref = 1;
1977
1978 r_tilegx_plt32:
1979 if (h != NULL && !bfd_link_pic (info))
1980 {
1981 /* We may need a .plt entry if the function this reloc
1982 refers to is in a shared lib. */
1983 h->plt.refcount += 1;
1984 }
1985
1986 /* If we are creating a shared library, and this is a reloc
1987 against a global symbol, or a non PC relative reloc
1988 against a local symbol, then we need to copy the reloc
1989 into the shared library. However, if we are linking with
1990 -Bsymbolic, we do not need to copy a reloc against a
1991 global symbol which is defined in an object we are
1992 including in the link (i.e., DEF_REGULAR is set). At
1993 this point we have not seen all the input files, so it is
1994 possible that DEF_REGULAR is not set now but will be set
1995 later (it is never cleared). In case of a weak definition,
1996 DEF_REGULAR may be cleared later by a strong definition in
1997 a shared library. We account for that possibility below by
1998 storing information in the relocs_copied field of the hash
1999 table entry. A similar situation occurs when creating
2000 shared libraries and symbol visibility changes render the
2001 symbol local.
2002
2003 If on the other hand, we are creating an executable, we
2004 may need to keep relocations for symbols satisfied by a
2005 dynamic library if we manage to avoid copy relocs for the
2006 symbol. */
2007 if ((bfd_link_pic (info)
2008 && (sec->flags & SEC_ALLOC) != 0
2009 && (! tilegx_elf_howto_table[r_type].pc_relative
2010 || (h != NULL
2011 && (! info->symbolic
2012 || h->root.type == bfd_link_hash_defweak
2013 || !h->def_regular))))
2014 || (!bfd_link_pic (info)
2015 && (sec->flags & SEC_ALLOC) != 0
2016 && h != NULL
2017 && (h->root.type == bfd_link_hash_defweak
2018 || !h->def_regular)))
2019 {
2020 struct tilegx_elf_dyn_relocs *p;
2021 struct tilegx_elf_dyn_relocs **head;
2022
2023 /* When creating a shared object, we must copy these
2024 relocs into the output file. We create a reloc
2025 section in dynobj and make room for the reloc. */
2026 if (sreloc == NULL)
2027 {
2028 sreloc = _bfd_elf_make_dynamic_reloc_section
2029 (sec, htab->elf.dynobj, htab->word_align_power, abfd,
2030 /*rela?*/ TRUE);
2031
2032 if (sreloc == NULL)
2033 return FALSE;
2034 }
2035
2036 /* If this is a global symbol, we count the number of
2037 relocations we need for this symbol. */
2038 if (h != NULL)
2039 head =
2040 &((struct tilegx_elf_link_hash_entry *) h)->dyn_relocs;
2041 else
2042 {
2043 /* Track dynamic relocs needed for local syms too.
2044 We really need local syms available to do this
2045 easily. Oh well. */
2046
2047 asection *s;
2048 void *vpp;
2049 Elf_Internal_Sym *isym;
2050
2051 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2052 abfd, r_symndx);
2053 if (isym == NULL)
2054 return FALSE;
2055
2056 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
2057 if (s == NULL)
2058 s = sec;
2059
2060 vpp = &elf_section_data (s)->local_dynrel;
2061 head = (struct tilegx_elf_dyn_relocs **) vpp;
2062 }
2063
2064 p = *head;
2065 if (p == NULL || p->sec != sec)
2066 {
2067 bfd_size_type amt = sizeof *p;
2068 p = ((struct tilegx_elf_dyn_relocs *)
2069 bfd_alloc (htab->elf.dynobj, amt));
2070 if (p == NULL)
2071 return FALSE;
2072 p->next = *head;
2073 *head = p;
2074 p->sec = sec;
2075 p->count = 0;
2076 p->pc_count = 0;
2077 }
2078
2079 p->count += 1;
2080 if (tilegx_elf_howto_table[r_type].pc_relative)
2081 p->pc_count += 1;
2082 }
2083
2084 break;
2085
2086 case R_TILEGX_GNU_VTINHERIT:
2087 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2088 return FALSE;
2089 break;
2090
2091 case R_TILEGX_GNU_VTENTRY:
2092 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2093 return FALSE;
2094 break;
2095
2096 default:
2097 break;
2098 }
2099 }
2100
2101 return TRUE;
2102 }
2103
2104 \f
2105 asection *
2106 tilegx_elf_gc_mark_hook (asection *sec,
2107 struct bfd_link_info *info,
2108 Elf_Internal_Rela *rel,
2109 struct elf_link_hash_entry *h,
2110 Elf_Internal_Sym *sym)
2111 {
2112 if (h != NULL)
2113 {
2114 switch (TILEGX_ELF_R_TYPE (rel->r_info))
2115 {
2116 case R_TILEGX_GNU_VTINHERIT:
2117 case R_TILEGX_GNU_VTENTRY:
2118 return NULL;
2119 }
2120 }
2121
2122 /* FIXME: The test here, in check_relocs and in relocate_section
2123 dealing with TLS optimization, ought to be !bfd_link_executable (info). */
2124 if (bfd_link_pic (info))
2125 {
2126 switch (TILEGX_ELF_R_TYPE (rel->r_info))
2127 {
2128 case R_TILEGX_TLS_GD_CALL:
2129 /* This reloc implicitly references __tls_get_addr. We know
2130 another reloc will reference the same symbol as the one
2131 on this reloc, so the real symbol and section will be
2132 gc marked when processing the other reloc. That lets
2133 us handle __tls_get_addr here. */
2134 h = elf_link_hash_lookup (elf_hash_table (info), "__tls_get_addr",
2135 FALSE, FALSE, TRUE);
2136 BFD_ASSERT (h != NULL);
2137 h->mark = 1;
2138 if (h->u.weakdef != NULL)
2139 h->u.weakdef->mark = 1;
2140 sym = NULL;
2141 }
2142 }
2143
2144 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2145 }
2146
2147 /* Update the got entry reference counts for the section being removed. */
2148 bfd_boolean
2149 tilegx_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
2150 asection *sec, const Elf_Internal_Rela *relocs)
2151 {
2152 struct tilegx_elf_link_hash_table *htab;
2153 Elf_Internal_Shdr *symtab_hdr;
2154 struct elf_link_hash_entry **sym_hashes;
2155 bfd_signed_vma *local_got_refcounts;
2156 const Elf_Internal_Rela *rel, *relend;
2157
2158 if (bfd_link_relocatable (info))
2159 return TRUE;
2160
2161 BFD_ASSERT (is_tilegx_elf (abfd) || sec->reloc_count == 0);
2162
2163 elf_section_data (sec)->local_dynrel = NULL;
2164
2165 htab = tilegx_elf_hash_table (info);
2166 BFD_ASSERT (htab != NULL);
2167 symtab_hdr = &elf_symtab_hdr (abfd);
2168 sym_hashes = elf_sym_hashes (abfd);
2169 local_got_refcounts = elf_local_got_refcounts (abfd);
2170
2171 relend = relocs + sec->reloc_count;
2172 for (rel = relocs; rel < relend; rel++)
2173 {
2174 unsigned long r_symndx;
2175 unsigned int r_type;
2176 struct elf_link_hash_entry *h = NULL;
2177
2178 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info);
2179 if (r_symndx >= symtab_hdr->sh_info)
2180 {
2181 struct tilegx_elf_link_hash_entry *eh;
2182 struct tilegx_elf_dyn_relocs **pp;
2183 struct tilegx_elf_dyn_relocs *p;
2184
2185 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2186 while (h->root.type == bfd_link_hash_indirect
2187 || h->root.type == bfd_link_hash_warning)
2188 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2189 eh = (struct tilegx_elf_link_hash_entry *) h;
2190 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
2191 if (p->sec == sec)
2192 {
2193 /* Everything must go for SEC. */
2194 *pp = p->next;
2195 break;
2196 }
2197 }
2198
2199 r_type = TILEGX_ELF_R_TYPE (rel->r_info);
2200 r_type = tilegx_elf_tls_transition (info, r_type, h != NULL,
2201 sec->sec_flg0);
2202 switch (r_type)
2203 {
2204 case R_TILEGX_IMM16_X0_HW0_GOT:
2205 case R_TILEGX_IMM16_X1_HW0_GOT:
2206 case R_TILEGX_IMM16_X0_HW0_LAST_GOT:
2207 case R_TILEGX_IMM16_X1_HW0_LAST_GOT:
2208 case R_TILEGX_IMM16_X0_HW1_LAST_GOT:
2209 case R_TILEGX_IMM16_X1_HW1_LAST_GOT:
2210 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
2211 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
2212 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
2213 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
2214 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
2215 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
2216 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
2217 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
2218 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
2219 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
2220 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
2221 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
2222 if (h != NULL)
2223 {
2224 if (h->got.refcount > 0)
2225 h->got.refcount--;
2226 }
2227 else
2228 {
2229 if (local_got_refcounts &&
2230 local_got_refcounts[r_symndx] > 0)
2231 local_got_refcounts[r_symndx]--;
2232 }
2233 break;
2234
2235 case R_TILEGX_64_PCREL:
2236 case R_TILEGX_32_PCREL:
2237 case R_TILEGX_16_PCREL:
2238 case R_TILEGX_8_PCREL:
2239 case R_TILEGX_IMM16_X0_HW0_PCREL:
2240 case R_TILEGX_IMM16_X1_HW0_PCREL:
2241 case R_TILEGX_IMM16_X0_HW1_PCREL:
2242 case R_TILEGX_IMM16_X1_HW1_PCREL:
2243 case R_TILEGX_IMM16_X0_HW2_PCREL:
2244 case R_TILEGX_IMM16_X1_HW2_PCREL:
2245 case R_TILEGX_IMM16_X0_HW3_PCREL:
2246 case R_TILEGX_IMM16_X1_HW3_PCREL:
2247 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL:
2248 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL:
2249 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL:
2250 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL:
2251 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL:
2252 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL:
2253 if (h != NULL
2254 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2255 break;
2256 /* Fall through. */
2257
2258 case R_TILEGX_64:
2259 case R_TILEGX_32:
2260 case R_TILEGX_16:
2261 case R_TILEGX_8:
2262 case R_TILEGX_HW0:
2263 case R_TILEGX_HW1:
2264 case R_TILEGX_HW2:
2265 case R_TILEGX_HW3:
2266 case R_TILEGX_HW0_LAST:
2267 case R_TILEGX_HW1_LAST:
2268 case R_TILEGX_HW2_LAST:
2269 case R_TILEGX_COPY:
2270 case R_TILEGX_GLOB_DAT:
2271 case R_TILEGX_JMP_SLOT:
2272 case R_TILEGX_RELATIVE:
2273 case R_TILEGX_BROFF_X1:
2274 case R_TILEGX_JUMPOFF_X1:
2275 case R_TILEGX_IMM8_X0:
2276 case R_TILEGX_IMM8_Y0:
2277 case R_TILEGX_IMM8_X1:
2278 case R_TILEGX_IMM8_Y1:
2279 case R_TILEGX_DEST_IMM8_X1:
2280 case R_TILEGX_MT_IMM14_X1:
2281 case R_TILEGX_MF_IMM14_X1:
2282 case R_TILEGX_MMSTART_X0:
2283 case R_TILEGX_MMEND_X0:
2284 case R_TILEGX_SHAMT_X0:
2285 case R_TILEGX_SHAMT_X1:
2286 case R_TILEGX_SHAMT_Y0:
2287 case R_TILEGX_SHAMT_Y1:
2288 case R_TILEGX_IMM16_X0_HW0:
2289 case R_TILEGX_IMM16_X1_HW0:
2290 case R_TILEGX_IMM16_X0_HW1:
2291 case R_TILEGX_IMM16_X1_HW1:
2292 case R_TILEGX_IMM16_X0_HW2:
2293 case R_TILEGX_IMM16_X1_HW2:
2294 case R_TILEGX_IMM16_X0_HW3:
2295 case R_TILEGX_IMM16_X1_HW3:
2296 case R_TILEGX_IMM16_X0_HW0_LAST:
2297 case R_TILEGX_IMM16_X1_HW0_LAST:
2298 case R_TILEGX_IMM16_X0_HW1_LAST:
2299 case R_TILEGX_IMM16_X1_HW1_LAST:
2300 case R_TILEGX_IMM16_X0_HW2_LAST:
2301 case R_TILEGX_IMM16_X1_HW2_LAST:
2302 if (bfd_link_pic (info))
2303 break;
2304 /* Fall through. */
2305
2306 case R_TILEGX_JUMPOFF_X1_PLT:
2307 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL:
2308 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL:
2309 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL:
2310 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL:
2311 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL:
2312 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL:
2313 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL:
2314 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL:
2315 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL:
2316 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL:
2317 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL:
2318 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL:
2319 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL:
2320 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL:
2321 if (h != NULL)
2322 {
2323 if (h->plt.refcount > 0)
2324 h->plt.refcount--;
2325 }
2326 break;
2327
2328 default:
2329 break;
2330 }
2331 }
2332
2333 return TRUE;
2334 }
2335
2336 /* Adjust a symbol defined by a dynamic object and referenced by a
2337 regular object. The current definition is in some section of the
2338 dynamic object, but we're not including those sections. We have to
2339 change the definition to something the rest of the link can
2340 understand. */
2341
2342 bfd_boolean
2343 tilegx_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2344 struct elf_link_hash_entry *h)
2345 {
2346 struct tilegx_elf_link_hash_table *htab;
2347 struct tilegx_elf_link_hash_entry * eh;
2348 struct tilegx_elf_dyn_relocs *p;
2349 bfd *dynobj;
2350 asection *s;
2351
2352 htab = tilegx_elf_hash_table (info);
2353 BFD_ASSERT (htab != NULL);
2354
2355 dynobj = htab->elf.dynobj;
2356
2357 /* Make sure we know what is going on here. */
2358 BFD_ASSERT (dynobj != NULL
2359 && (h->needs_plt
2360 || h->u.weakdef != NULL
2361 || (h->def_dynamic
2362 && h->ref_regular
2363 && !h->def_regular)));
2364
2365 /* If this is a function, put it in the procedure linkage table. We
2366 will fill in the contents of the procedure linkage table later
2367 (although we could actually do it here). */
2368 if (h->type == STT_FUNC || h->needs_plt)
2369 {
2370 if (h->plt.refcount <= 0
2371 || SYMBOL_CALLS_LOCAL (info, h)
2372 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2373 && h->root.type == bfd_link_hash_undefweak))
2374 {
2375 /* This case can occur if we saw a R_TILEGX_JUMPOFF_X1_PLT
2376 reloc in an input file, but the symbol was never referred
2377 to by a dynamic object, or if all references were garbage
2378 collected. In such a case, we don't actually need to build
2379 a procedure linkage table, and we can just do a
2380 R_TILEGX_JUMPOFF_X1 relocation instead. */
2381 h->plt.offset = (bfd_vma) -1;
2382 h->needs_plt = 0;
2383 }
2384
2385 return TRUE;
2386 }
2387 else
2388 h->plt.offset = (bfd_vma) -1;
2389
2390 /* If this is a weak symbol, and there is a real definition, the
2391 processor independent code will have arranged for us to see the
2392 real definition first, and we can just use the same value. */
2393 if (h->u.weakdef != NULL)
2394 {
2395 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2396 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2397 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2398 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2399 return TRUE;
2400 }
2401
2402 /* This is a reference to a symbol defined by a dynamic object which
2403 is not a function. */
2404
2405 /* If we are creating a shared library, we must presume that the
2406 only references to the symbol are via the global offset table.
2407 For such cases we need not do anything here; the relocations will
2408 be handled correctly by relocate_section. */
2409 if (bfd_link_pic (info))
2410 return TRUE;
2411
2412 /* If there are no references to this symbol that do not use the
2413 GOT, we don't need to generate a copy reloc. */
2414 if (!h->non_got_ref)
2415 return TRUE;
2416
2417 /* If -z nocopyreloc was given, we won't generate them either. */
2418 if (info->nocopyreloc)
2419 {
2420 h->non_got_ref = 0;
2421 return TRUE;
2422 }
2423
2424 eh = (struct tilegx_elf_link_hash_entry *) h;
2425 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2426 {
2427 s = p->sec->output_section;
2428 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2429 break;
2430 }
2431
2432 /* If we didn't find any dynamic relocs in read-only sections, then
2433 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2434 if (p == NULL)
2435 {
2436 h->non_got_ref = 0;
2437 return TRUE;
2438 }
2439
2440 /* We must allocate the symbol in our .dynbss section, which will
2441 become part of the .bss section of the executable. There will be
2442 an entry for this symbol in the .dynsym section. The dynamic
2443 object will contain position independent code, so all references
2444 from the dynamic object to this symbol will go through the global
2445 offset table. The dynamic linker will use the .dynsym entry to
2446 determine the address it must put in the global offset table, so
2447 both the dynamic object and the regular object will refer to the
2448 same memory location for the variable. */
2449
2450 /* We must generate a R_TILEGX_COPY reloc to tell the dynamic linker
2451 to copy the initial value out of the dynamic object and into the
2452 runtime process image. We need to remember the offset into the
2453 .rel.bss section we are going to use. */
2454 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2455 {
2456 htab->srelbss->size += TILEGX_ELF_RELA_BYTES (htab);
2457 h->needs_copy = 1;
2458 }
2459
2460 return _bfd_elf_adjust_dynamic_copy (info, h, htab->sdynbss);
2461 }
2462
2463 /* Allocate space in .plt, .got and associated reloc sections for
2464 dynamic relocs. */
2465
2466 static bfd_boolean
2467 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2468 {
2469 struct bfd_link_info *info;
2470 struct tilegx_elf_link_hash_table *htab;
2471 struct tilegx_elf_link_hash_entry *eh;
2472 struct tilegx_elf_dyn_relocs *p;
2473
2474 if (h->root.type == bfd_link_hash_indirect)
2475 return TRUE;
2476
2477 info = (struct bfd_link_info *) inf;
2478 htab = tilegx_elf_hash_table (info);
2479 BFD_ASSERT (htab != NULL);
2480
2481 if (htab->elf.dynamic_sections_created
2482 && h->plt.refcount > 0)
2483 {
2484 /* Make sure this symbol is output as a dynamic symbol.
2485 Undefined weak syms won't yet be marked as dynamic. */
2486 if (h->dynindx == -1
2487 && !h->forced_local)
2488 {
2489 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2490 return FALSE;
2491 }
2492
2493 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
2494 {
2495 asection *s = htab->elf.splt;
2496
2497 /* Allocate room for the header and tail. */
2498 if (s->size == 0)
2499 {
2500 s->size = PLT_ENTRY_SIZE;
2501 }
2502
2503 h->plt.offset = s->size - PLT_ENTRY_SIZE + PLT_HEADER_SIZE;
2504
2505 /* If this symbol is not defined in a regular file, and we are
2506 not generating a shared library, then set the symbol to this
2507 location in the .plt. This is required to make function
2508 pointers compare as equal between the normal executable and
2509 the shared library. */
2510 if (! bfd_link_pic (info)
2511 && !h->def_regular)
2512 {
2513 h->root.u.def.section = s;
2514 h->root.u.def.value = h->plt.offset;
2515 }
2516
2517 /* Make room for this entry. */
2518 s->size += PLT_ENTRY_SIZE;
2519
2520 /* We also need to make an entry in the .got.plt section. */
2521 htab->elf.sgotplt->size += GOT_ENTRY_SIZE (htab);
2522
2523 /* We also need to make an entry in the .rela.plt section. */
2524 htab->elf.srelplt->size += TILEGX_ELF_RELA_BYTES (htab);
2525 }
2526 else
2527 {
2528 h->plt.offset = (bfd_vma) -1;
2529 h->needs_plt = 0;
2530 }
2531 }
2532 else
2533 {
2534 h->plt.offset = (bfd_vma) -1;
2535 h->needs_plt = 0;
2536 }
2537
2538 /* If a TLS_IE symbol is now local to the binary, make it a TLS_LE
2539 requiring no TLS entry. */
2540 if (h->got.refcount > 0
2541 && !htab->disable_le_transition
2542 && !bfd_link_pic (info)
2543 && h->dynindx == -1
2544 && tilegx_elf_hash_entry(h)->tls_type == GOT_TLS_IE)
2545 h->got.offset = (bfd_vma) -1;
2546 else if (h->got.refcount > 0)
2547 {
2548 asection *s;
2549 bfd_boolean dyn;
2550 int tls_type = tilegx_elf_hash_entry(h)->tls_type;
2551
2552 /* Make sure this symbol is output as a dynamic symbol.
2553 Undefined weak syms won't yet be marked as dynamic. */
2554 if (h->dynindx == -1
2555 && !h->forced_local)
2556 {
2557 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2558 return FALSE;
2559 }
2560
2561 s = htab->elf.sgot;
2562 h->got.offset = s->size;
2563 s->size += TILEGX_ELF_WORD_BYTES (htab);
2564 /* TLS_GD entries need 2 consecutive GOT slots. */
2565 if (tls_type == GOT_TLS_GD)
2566 s->size += TILEGX_ELF_WORD_BYTES (htab);
2567 dyn = htab->elf.dynamic_sections_created;
2568 /* TLS_IE needs one dynamic relocation,
2569 TLS_GD needs two if local symbol and two if global. */
2570 if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE)
2571 htab->elf.srelgot->size += 2 * TILEGX_ELF_RELA_BYTES (htab);
2572 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2573 bfd_link_pic (info),
2574 h))
2575 htab->elf.srelgot->size += TILEGX_ELF_RELA_BYTES (htab);
2576 }
2577 else
2578 h->got.offset = (bfd_vma) -1;
2579
2580 eh = (struct tilegx_elf_link_hash_entry *) h;
2581 if (eh->dyn_relocs == NULL)
2582 return TRUE;
2583
2584 /* In the shared -Bsymbolic case, discard space allocated for
2585 dynamic pc-relative relocs against symbols which turn out to be
2586 defined in regular objects. For the normal shared case, discard
2587 space for pc-relative relocs that have become local due to symbol
2588 visibility changes. */
2589
2590 if (bfd_link_pic (info))
2591 {
2592 if (SYMBOL_CALLS_LOCAL (info, h))
2593 {
2594 struct tilegx_elf_dyn_relocs **pp;
2595
2596 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2597 {
2598 p->count -= p->pc_count;
2599 p->pc_count = 0;
2600 if (p->count == 0)
2601 *pp = p->next;
2602 else
2603 pp = &p->next;
2604 }
2605 }
2606
2607 /* Also discard relocs on undefined weak syms with non-default
2608 visibility. */
2609 if (eh->dyn_relocs != NULL
2610 && h->root.type == bfd_link_hash_undefweak)
2611 {
2612 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2613 eh->dyn_relocs = NULL;
2614
2615 /* Make sure undefined weak symbols are output as a dynamic
2616 symbol in PIEs. */
2617 else if (h->dynindx == -1
2618 && !h->forced_local)
2619 {
2620 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2621 return FALSE;
2622 }
2623 }
2624 }
2625 else
2626 {
2627 /* For the non-shared case, discard space for relocs against
2628 symbols which turn out to need copy relocs or are not
2629 dynamic. */
2630
2631 if (!h->non_got_ref
2632 && ((h->def_dynamic
2633 && !h->def_regular)
2634 || (htab->elf.dynamic_sections_created
2635 && (h->root.type == bfd_link_hash_undefweak
2636 || h->root.type == bfd_link_hash_undefined))))
2637 {
2638 /* Make sure this symbol is output as a dynamic symbol.
2639 Undefined weak syms won't yet be marked as dynamic. */
2640 if (h->dynindx == -1
2641 && !h->forced_local)
2642 {
2643 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2644 return FALSE;
2645 }
2646
2647 /* If that succeeded, we know we'll be keeping all the
2648 relocs. */
2649 if (h->dynindx != -1)
2650 goto keep;
2651 }
2652
2653 eh->dyn_relocs = NULL;
2654
2655 keep: ;
2656 }
2657
2658 /* Finally, allocate space. */
2659 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2660 {
2661 asection *sreloc = elf_section_data (p->sec)->sreloc;
2662 sreloc->size += p->count * TILEGX_ELF_RELA_BYTES (htab);
2663 }
2664
2665 return TRUE;
2666 }
2667
2668 /* Find any dynamic relocs that apply to read-only sections. */
2669
2670 static bfd_boolean
2671 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2672 {
2673 struct tilegx_elf_link_hash_entry *eh;
2674 struct tilegx_elf_dyn_relocs *p;
2675
2676 eh = (struct tilegx_elf_link_hash_entry *) h;
2677 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2678 {
2679 asection *s = p->sec->output_section;
2680
2681 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2682 {
2683 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2684
2685 info->flags |= DF_TEXTREL;
2686
2687 /* Not an error, just cut short the traversal. */
2688 return FALSE;
2689 }
2690 }
2691 return TRUE;
2692 }
2693
2694 /* Return true if the dynamic symbol for a given section should be
2695 omitted when creating a shared library. */
2696
2697 bfd_boolean
2698 tilegx_elf_omit_section_dynsym (bfd *output_bfd,
2699 struct bfd_link_info *info,
2700 asection *p)
2701 {
2702 /* We keep the .got section symbol so that explicit relocations
2703 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode
2704 can be turned into relocations against the .got symbol. */
2705 if (strcmp (p->name, ".got") == 0)
2706 return FALSE;
2707
2708 return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p);
2709 }
2710
2711 bfd_boolean
2712 tilegx_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2713 struct bfd_link_info *info)
2714 {
2715 struct tilegx_elf_link_hash_table *htab;
2716 bfd *dynobj;
2717 asection *s;
2718 bfd *ibfd;
2719
2720 htab = tilegx_elf_hash_table (info);
2721 BFD_ASSERT (htab != NULL);
2722 dynobj = htab->elf.dynobj;
2723 BFD_ASSERT (dynobj != NULL);
2724
2725 if (elf_hash_table (info)->dynamic_sections_created)
2726 {
2727 /* Set the contents of the .interp section to the interpreter. */
2728 if (bfd_link_executable (info) && !info->nointerp)
2729 {
2730 s = bfd_get_linker_section (dynobj, ".interp");
2731 BFD_ASSERT (s != NULL);
2732 s->size = strlen (htab->dynamic_interpreter) + 1;
2733 s->contents = (unsigned char *) htab->dynamic_interpreter;
2734 }
2735 }
2736
2737 /* Set up .got offsets for local syms, and space for local dynamic
2738 relocs. */
2739 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2740 {
2741 bfd_signed_vma *local_got;
2742 bfd_signed_vma *end_local_got;
2743 char *local_tls_type;
2744 bfd_size_type locsymcount;
2745 Elf_Internal_Shdr *symtab_hdr;
2746 asection *srel;
2747
2748 if (! is_tilegx_elf (ibfd))
2749 continue;
2750
2751 for (s = ibfd->sections; s != NULL; s = s->next)
2752 {
2753 struct tilegx_elf_dyn_relocs *p;
2754
2755 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2756 {
2757 if (!bfd_is_abs_section (p->sec)
2758 && bfd_is_abs_section (p->sec->output_section))
2759 {
2760 /* Input section has been discarded, either because
2761 it is a copy of a linkonce section or due to
2762 linker script /DISCARD/, so we'll be discarding
2763 the relocs too. */
2764 }
2765 else if (p->count != 0)
2766 {
2767 srel = elf_section_data (p->sec)->sreloc;
2768 srel->size += p->count * TILEGX_ELF_RELA_BYTES (htab);
2769 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2770 info->flags |= DF_TEXTREL;
2771 }
2772 }
2773 }
2774
2775 local_got = elf_local_got_refcounts (ibfd);
2776 if (!local_got)
2777 continue;
2778
2779 symtab_hdr = &elf_symtab_hdr (ibfd);
2780 locsymcount = symtab_hdr->sh_info;
2781 end_local_got = local_got + locsymcount;
2782 local_tls_type = _bfd_tilegx_elf_local_got_tls_type (ibfd);
2783 s = htab->elf.sgot;
2784 srel = htab->elf.srelgot;
2785 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2786 {
2787 if (*local_got > 0)
2788 {
2789 *local_got = s->size;
2790 s->size += TILEGX_ELF_WORD_BYTES (htab);
2791 if (*local_tls_type == GOT_TLS_GD)
2792 s->size += TILEGX_ELF_WORD_BYTES (htab);
2793 if (bfd_link_pic (info)
2794 || *local_tls_type == GOT_TLS_GD
2795 || *local_tls_type == GOT_TLS_IE)
2796 srel->size += TILEGX_ELF_RELA_BYTES (htab);
2797 }
2798 else
2799 *local_got = (bfd_vma) -1;
2800 }
2801 }
2802
2803 /* Allocate global sym .plt and .got entries, and space for global
2804 sym dynamic relocs. */
2805 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
2806
2807 if (elf_hash_table (info)->dynamic_sections_created)
2808 {
2809 /* If the .got section is more than 0x8000 bytes, we add
2810 0x8000 to the value of _GLOBAL_OFFSET_TABLE_, so that 16
2811 bit relocations have a greater chance of working. */
2812 if (htab->elf.sgot->size >= 0x8000
2813 && elf_hash_table (info)->hgot->root.u.def.value == 0)
2814 elf_hash_table (info)->hgot->root.u.def.value = 0x8000;
2815 }
2816
2817 if (htab->elf.sgotplt)
2818 {
2819 struct elf_link_hash_entry *got;
2820 got = elf_link_hash_lookup (elf_hash_table (info),
2821 "_GLOBAL_OFFSET_TABLE_",
2822 FALSE, FALSE, FALSE);
2823
2824 /* Don't allocate .got.plt section if there are no GOT nor PLT
2825 entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */
2826 if ((got == NULL
2827 || !got->ref_regular_nonweak)
2828 && (htab->elf.sgotplt->size
2829 == (unsigned)GOTPLT_HEADER_SIZE (htab))
2830 && (htab->elf.splt == NULL
2831 || htab->elf.splt->size == 0)
2832 && (htab->elf.sgot == NULL
2833 || (htab->elf.sgot->size
2834 == get_elf_backend_data (output_bfd)->got_header_size)))
2835 htab->elf.sgotplt->size = 0;
2836 }
2837
2838 /* The check_relocs and adjust_dynamic_symbol entry points have
2839 determined the sizes of the various dynamic sections. Allocate
2840 memory for them. */
2841 for (s = dynobj->sections; s != NULL; s = s->next)
2842 {
2843 if ((s->flags & SEC_LINKER_CREATED) == 0)
2844 continue;
2845
2846 if (s == htab->elf.splt
2847 || s == htab->elf.sgot
2848 || s == htab->elf.sgotplt
2849 || s == htab->sdynbss)
2850 {
2851 /* Strip this section if we don't need it; see the
2852 comment below. */
2853 }
2854 else if (strncmp (s->name, ".rela", 5) == 0)
2855 {
2856 if (s->size != 0)
2857 {
2858 /* We use the reloc_count field as a counter if we need
2859 to copy relocs into the output file. */
2860 s->reloc_count = 0;
2861 }
2862 }
2863 else
2864 {
2865 /* It's not one of our sections. */
2866 continue;
2867 }
2868
2869 if (s->size == 0)
2870 {
2871 /* If we don't need this section, strip it from the
2872 output file. This is mostly to handle .rela.bss and
2873 .rela.plt. We must create both sections in
2874 create_dynamic_sections, because they must be created
2875 before the linker maps input sections to output
2876 sections. The linker does that before
2877 adjust_dynamic_symbol is called, and it is that
2878 function which decides whether anything needs to go
2879 into these sections. */
2880 s->flags |= SEC_EXCLUDE;
2881 continue;
2882 }
2883
2884 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2885 continue;
2886
2887 /* Allocate memory for the section contents. Zero the memory
2888 for the benefit of .rela.plt, which has 4 unused entries
2889 at the beginning, and we don't want garbage. */
2890 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2891 if (s->contents == NULL)
2892 return FALSE;
2893 }
2894
2895 if (elf_hash_table (info)->dynamic_sections_created)
2896 {
2897 /* Add some entries to the .dynamic section. We fill in the
2898 values later, in tilegx_elf_finish_dynamic_sections, but we
2899 must add the entries now so that we get the correct size for
2900 the .dynamic section. The DT_DEBUG entry is filled in by the
2901 dynamic linker and used by the debugger. */
2902 #define add_dynamic_entry(TAG, VAL) \
2903 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2904
2905 if (bfd_link_executable (info))
2906 {
2907 if (!add_dynamic_entry (DT_DEBUG, 0))
2908 return FALSE;
2909 }
2910
2911 if (htab->elf.srelplt->size != 0)
2912 {
2913 if (!add_dynamic_entry (DT_PLTGOT, 0)
2914 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2915 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2916 || !add_dynamic_entry (DT_JMPREL, 0))
2917 return FALSE;
2918 }
2919
2920 if (!add_dynamic_entry (DT_RELA, 0)
2921 || !add_dynamic_entry (DT_RELASZ, 0)
2922 || !add_dynamic_entry (DT_RELAENT, TILEGX_ELF_RELA_BYTES (htab)))
2923 return FALSE;
2924
2925 /* If any dynamic relocs apply to a read-only section,
2926 then we need a DT_TEXTREL entry. */
2927 if ((info->flags & DF_TEXTREL) == 0)
2928 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
2929
2930 if (info->flags & DF_TEXTREL)
2931 {
2932 if (!add_dynamic_entry (DT_TEXTREL, 0))
2933 return FALSE;
2934 }
2935 }
2936 #undef add_dynamic_entry
2937
2938 return TRUE;
2939 }
2940 \f
2941 /* Return the base VMA address which should be subtracted from real addresses
2942 when resolving @dtpoff relocation.
2943 This is PT_TLS segment p_vaddr. */
2944
2945 static bfd_vma
2946 dtpoff_base (struct bfd_link_info *info)
2947 {
2948 /* If tls_sec is NULL, we should have signalled an error already. */
2949 if (elf_hash_table (info)->tls_sec == NULL)
2950 return 0;
2951 return elf_hash_table (info)->tls_sec->vma;
2952 }
2953
2954 /* Return the relocation value for @tpoff relocation. */
2955
2956 static bfd_vma
2957 tpoff (struct bfd_link_info *info, bfd_vma address)
2958 {
2959 struct elf_link_hash_table *htab = elf_hash_table (info);
2960
2961 /* If tls_sec is NULL, we should have signalled an error already. */
2962 if (htab->tls_sec == NULL)
2963 return 0;
2964
2965 return (address - htab->tls_sec->vma);
2966 }
2967
2968 /* Copy SIZE bits from FROM to TO at address ADDR. */
2969
2970 static void
2971 tilegx_copy_bits (bfd_byte *addr, int from, int to, int size)
2972 {
2973 int i;
2974 for (i = 0; i < size; i++)
2975 {
2976 int from_byte = (from + i) / 8;
2977 int from_bit = (from + i) % 8;
2978 int to_byte = (to + i) / 8;
2979 int to_bit = (to + i) % 8;
2980 bfd_byte to_mask = 1 << to_bit;
2981 addr[to_byte] = (addr[to_byte] & ~to_mask)
2982 | ((addr[from_byte] >> from_bit << to_bit) & to_mask);
2983 }
2984 }
2985
2986 /* Replace the MASK bits in ADDR with those in INSN, for the next
2987 TILEGX_BUNDLE_SIZE_IN_BYTES bytes. */
2988
2989 static void
2990 tilegx_replace_insn (bfd_byte *addr, const bfd_byte *mask,
2991 const bfd_byte *insn)
2992 {
2993 int i;
2994 for (i = 0; i < TILEGX_BUNDLE_SIZE_IN_BYTES; i++)
2995 {
2996 addr[i] = (addr[i] & ~mask[i]) | (insn[i] & mask[i]);
2997 }
2998 }
2999
3000 /* Mask to extract the bits corresponding to an instruction in a
3001 specific pipe of a bundle. */
3002 static const bfd_byte insn_mask_X1[] = {
3003 0x00, 0x00, 0x00, 0x80, 0xff, 0xff, 0xff, 0x3f
3004 };
3005
3006 /* Mask to extract the bits corresponding to an instruction in a
3007 specific pipe of a bundle, minus the destination operand and the
3008 first source operand. */
3009 static const bfd_byte insn_mask_X0_no_dest_no_srca[] = {
3010 0x00, 0xf0, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00
3011 };
3012
3013 static const bfd_byte insn_mask_X1_no_dest_no_srca[] = {
3014 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0x3f
3015 };
3016
3017 static const bfd_byte insn_mask_Y0_no_dest_no_srca[] = {
3018 0x00, 0xf0, 0x0f, 0x78, 0x00, 0x00, 0x00, 0x00
3019 };
3020 static const bfd_byte insn_mask_Y1_no_dest_no_srca[] = {
3021 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x07, 0x3c
3022 };
3023
3024 /* Mask to extract the bits corresponding to an instruction in a
3025 specific pipe of a bundle, minus the register operands. */
3026 static const bfd_byte insn_mask_X0_no_operand[] = {
3027 0x00, 0x00, 0xfc, 0x7f, 0x00, 0x00, 0x00, 0x00
3028 };
3029
3030 static const bfd_byte insn_mask_X1_no_operand[] = {
3031 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0x3f
3032 };
3033
3034 static const bfd_byte insn_mask_Y0_no_operand[] = {
3035 0x00, 0x00, 0x0c, 0x78, 0x00, 0x00, 0x00, 0x00
3036 };
3037
3038 static const bfd_byte insn_mask_Y1_no_operand[] = {
3039 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x3c
3040 };
3041
3042 /* Various instructions synthesized to support tls references. */
3043
3044 /* ld r0, r0 in the X1 pipe, used for tls ie. */
3045 static const bfd_byte insn_tls_ie_ld_X1[] = {
3046 0x00, 0x00, 0x00, 0x00, 0x00, 0xe8, 0x6a, 0x28
3047 };
3048
3049 /* ld4s r0, r0 in the X1 pipe, used for tls ie. */
3050 static const bfd_byte insn_tls_ie_ld4s_X1[] = {
3051 0x00, 0x00, 0x00, 0x00, 0x00, 0x98, 0x6a, 0x28
3052 };
3053
3054 /* add r0, r0, tp in various pipes, used for tls ie. */
3055 static const bfd_byte insn_tls_ie_add_X0X1[] = {
3056 0x00, 0x50, 0x0f, 0x50, 0x00, 0xa8, 0x07, 0x28
3057 };
3058 static const bfd_byte insn_tls_ie_add_Y0Y1[] = {
3059 0x00, 0x50, 0x27, 0x2c, 0x00, 0xa8, 0x13, 0x9a
3060 };
3061
3062 /* addx r0, r0, tp in various pipes, used for tls ie. */
3063 static const bfd_byte insn_tls_ie_addx_X0X1[] = {
3064 0x00, 0x50, 0x0b, 0x50, 0x00, 0xa8, 0x05, 0x28
3065 };
3066 static const bfd_byte insn_tls_ie_addx_Y0Y1[] = {
3067 0x00, 0x50, 0x03, 0x2c, 0x00, 0xa8, 0x01, 0x9a
3068 };
3069
3070 /* move r0, r0 in various pipes, used for tls gd. */
3071 static const bfd_byte insn_tls_gd_add_X0X1[] = {
3072 0x00, 0xf0, 0x07, 0x51, 0x00, 0xf8, 0x3b, 0x28
3073 };
3074 static const bfd_byte insn_tls_gd_add_Y0Y1[] = {
3075 0x00, 0xf0, 0x0b, 0x54, 0x00, 0xf8, 0x05, 0xae
3076 };
3077
3078 static const bfd_byte *insn_move_X0X1 = insn_tls_gd_add_X0X1;
3079 static const bfd_byte *insn_move_Y0Y1 = insn_tls_gd_add_Y0Y1;
3080
3081 static const bfd_byte *insn_add_X0X1 = insn_tls_ie_add_X0X1;
3082 static const bfd_byte *insn_add_Y0Y1 = insn_tls_ie_add_Y0Y1;
3083
3084 static const bfd_byte *insn_addx_X0X1 = insn_tls_ie_addx_X0X1;
3085 static const bfd_byte *insn_addx_Y0Y1 = insn_tls_ie_addx_Y0Y1;
3086
3087 /* Relocate an TILEGX ELF section.
3088
3089 The RELOCATE_SECTION function is called by the new ELF backend linker
3090 to handle the relocations for a section.
3091
3092 The relocs are always passed as Rela structures.
3093
3094 This function is responsible for adjusting the section contents as
3095 necessary, and (if generating a relocatable output file) adjusting
3096 the reloc addend as necessary.
3097
3098 This function does not have to worry about setting the reloc
3099 address or the reloc symbol index.
3100
3101 LOCAL_SYMS is a pointer to the swapped in local symbols.
3102
3103 LOCAL_SECTIONS is an array giving the section in the input file
3104 corresponding to the st_shndx field of each local symbol.
3105
3106 The global hash table entry for the global symbols can be found
3107 via elf_sym_hashes (input_bfd).
3108
3109 When generating relocatable output, this function must handle
3110 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
3111 going to be the section symbol corresponding to the output
3112 section, which means that the addend must be adjusted
3113 accordingly. */
3114
3115 bfd_boolean
3116 tilegx_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
3117 bfd *input_bfd, asection *input_section,
3118 bfd_byte *contents, Elf_Internal_Rela *relocs,
3119 Elf_Internal_Sym *local_syms,
3120 asection **local_sections)
3121 {
3122 struct tilegx_elf_link_hash_table *htab;
3123 Elf_Internal_Shdr *symtab_hdr;
3124 struct elf_link_hash_entry **sym_hashes;
3125 bfd_vma *local_got_offsets;
3126 bfd_vma got_base;
3127 asection *sreloc;
3128 Elf_Internal_Rela *rel;
3129 Elf_Internal_Rela *relend;
3130 int num_relocs;
3131
3132 htab = tilegx_elf_hash_table (info);
3133 BFD_ASSERT (htab != NULL);
3134 symtab_hdr = &elf_symtab_hdr (input_bfd);
3135 sym_hashes = elf_sym_hashes (input_bfd);
3136 local_got_offsets = elf_local_got_offsets (input_bfd);
3137
3138 if (elf_hash_table (info)->hgot == NULL)
3139 got_base = 0;
3140 else
3141 got_base = elf_hash_table (info)->hgot->root.u.def.value;
3142
3143 sreloc = elf_section_data (input_section)->sreloc;
3144
3145 rel = relocs;
3146 num_relocs = input_section->reloc_count;
3147 relend = relocs + num_relocs;
3148 for (; rel < relend; rel++)
3149 {
3150 int r_type, tls_type;
3151 bfd_boolean is_tls_iele, is_tls_le;
3152 reloc_howto_type *howto;
3153 unsigned long r_symndx;
3154 struct elf_link_hash_entry *h;
3155 Elf_Internal_Sym *sym;
3156 tilegx_create_func create_func;
3157 asection *sec;
3158 bfd_vma relocation;
3159 bfd_reloc_status_type r;
3160 const char *name;
3161 bfd_vma off;
3162 bfd_boolean is_plt = FALSE;
3163
3164 bfd_boolean unresolved_reloc;
3165
3166 r_type = TILEGX_ELF_R_TYPE (rel->r_info);
3167 if (r_type == R_TILEGX_GNU_VTINHERIT
3168 || r_type == R_TILEGX_GNU_VTENTRY)
3169 continue;
3170
3171 if ((unsigned int)r_type >= ARRAY_SIZE (tilegx_elf_howto_table))
3172 {
3173 /* Not clear if we need to check here, but just be paranoid. */
3174 _bfd_error_handler
3175 /* xgettext:c-format */
3176 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
3177 input_bfd, r_type, input_section);
3178 bfd_set_error (bfd_error_bad_value);
3179 return FALSE;
3180 }
3181
3182 howto = tilegx_elf_howto_table + r_type;
3183
3184 /* This is a final link. */
3185 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info);
3186 h = NULL;
3187 sym = NULL;
3188 sec = NULL;
3189 unresolved_reloc = FALSE;
3190 if (r_symndx < symtab_hdr->sh_info)
3191 {
3192 sym = local_syms + r_symndx;
3193 sec = local_sections[r_symndx];
3194 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
3195 }
3196 else
3197 {
3198 bfd_boolean warned ATTRIBUTE_UNUSED;
3199 bfd_boolean ignored ATTRIBUTE_UNUSED;
3200
3201 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3202 r_symndx, symtab_hdr, sym_hashes,
3203 h, sec, relocation,
3204 unresolved_reloc, warned, ignored);
3205 if (warned)
3206 {
3207 /* To avoid generating warning messages about truncated
3208 relocations, set the relocation's address to be the same as
3209 the start of this section. */
3210 if (input_section->output_section != NULL)
3211 relocation = input_section->output_section->vma;
3212 else
3213 relocation = 0;
3214 }
3215 }
3216
3217 if (sec != NULL && discarded_section (sec))
3218 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3219 rel, 1, relend, howto, 0, contents);
3220
3221 if (bfd_link_relocatable (info))
3222 continue;
3223
3224 if (h != NULL)
3225 name = h->root.root.string;
3226 else
3227 {
3228 name = (bfd_elf_string_from_elf_section
3229 (input_bfd, symtab_hdr->sh_link, sym->st_name));
3230 if (name == NULL || *name == '\0')
3231 name = bfd_section_name (input_bfd, sec);
3232 }
3233
3234 switch (r_type)
3235 {
3236 case R_TILEGX_TLS_GD_CALL:
3237 case R_TILEGX_IMM8_X0_TLS_GD_ADD:
3238 case R_TILEGX_IMM8_Y0_TLS_GD_ADD:
3239 case R_TILEGX_IMM8_X1_TLS_GD_ADD:
3240 case R_TILEGX_IMM8_Y1_TLS_GD_ADD:
3241 case R_TILEGX_IMM8_X0_TLS_ADD:
3242 case R_TILEGX_IMM8_Y0_TLS_ADD:
3243 case R_TILEGX_IMM8_X1_TLS_ADD:
3244 case R_TILEGX_IMM8_Y1_TLS_ADD:
3245 tls_type = GOT_UNKNOWN;
3246 if (h == NULL && local_got_offsets)
3247 tls_type =
3248 _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx];
3249 else if (h != NULL)
3250 tls_type = tilegx_elf_hash_entry(h)->tls_type;
3251
3252 is_tls_iele = (! bfd_link_pic (info) || tls_type == GOT_TLS_IE);
3253 is_tls_le = is_tls_iele && (!input_section->sec_flg0
3254 && !bfd_link_pic (info)
3255 && (h == NULL || h->dynindx == -1));
3256
3257 if (r_type == R_TILEGX_TLS_GD_CALL)
3258 {
3259 if (is_tls_le)
3260 {
3261 /* GD -> LE */
3262 tilegx_replace_insn (contents + rel->r_offset,
3263 insn_mask_X1, insn_move_X0X1);
3264 continue;
3265 }
3266 else if (is_tls_iele)
3267 {
3268 /* GD -> IE */
3269 if (ABI_64_P (output_bfd))
3270 tilegx_replace_insn (contents + rel->r_offset,
3271 insn_mask_X1, insn_tls_ie_ld_X1);
3272 else
3273 tilegx_replace_insn (contents + rel->r_offset,
3274 insn_mask_X1, insn_tls_ie_ld4s_X1);
3275 continue;
3276 }
3277
3278 /* GD -> GD */
3279 h = (struct elf_link_hash_entry *)
3280 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
3281 FALSE, TRUE);
3282 BFD_ASSERT (h != NULL);
3283 r_type = R_TILEGX_JUMPOFF_X1_PLT;
3284 howto = tilegx_elf_howto_table + r_type;
3285 }
3286 else if (r_type == R_TILEGX_IMM8_X0_TLS_ADD
3287 || r_type == R_TILEGX_IMM8_X1_TLS_ADD
3288 || r_type == R_TILEGX_IMM8_Y0_TLS_ADD
3289 || r_type == R_TILEGX_IMM8_Y1_TLS_ADD)
3290 {
3291 bfd_boolean is_pipe0 =
3292 (r_type == R_TILEGX_IMM8_X0_TLS_ADD
3293 || r_type == R_TILEGX_IMM8_Y0_TLS_ADD);
3294 bfd_boolean is_X0X1 =
3295 (r_type == R_TILEGX_IMM8_X0_TLS_ADD
3296 || r_type == R_TILEGX_IMM8_X1_TLS_ADD);
3297 int dest_begin = is_pipe0 ? 0 : 31;
3298 int src_begin;
3299 const bfd_byte *insn;
3300 const bfd_byte *mask = NULL;
3301
3302 if (is_tls_le)
3303 {
3304 /* 1. copy dest operand into the first source operand.
3305 2. change the opcode to "move". */
3306 src_begin = is_pipe0 ? 6 : 37;
3307 insn = is_X0X1 ? insn_move_X0X1 : insn_move_Y0Y1;
3308
3309 switch (r_type)
3310 {
3311 case R_TILEGX_IMM8_X0_TLS_ADD:
3312 mask = insn_mask_X0_no_dest_no_srca;
3313 break;
3314 case R_TILEGX_IMM8_X1_TLS_ADD:
3315 mask = insn_mask_X1_no_dest_no_srca;
3316 break;
3317 case R_TILEGX_IMM8_Y0_TLS_ADD:
3318 mask = insn_mask_Y0_no_dest_no_srca;
3319 break;
3320 case R_TILEGX_IMM8_Y1_TLS_ADD:
3321 mask = insn_mask_Y1_no_dest_no_srca;
3322 break;
3323 }
3324 }
3325 else
3326 {
3327 /* 1. copy dest operand into the second source operand.
3328 2. change the opcode to "add". */
3329 src_begin = is_pipe0 ? 12 : 43;
3330 if (ABI_64_P (output_bfd))
3331 insn = is_X0X1 ? insn_add_X0X1 : insn_add_Y0Y1;
3332 else
3333 insn = is_X0X1 ? insn_addx_X0X1 : insn_addx_Y0Y1;
3334
3335 switch (r_type)
3336 {
3337 case R_TILEGX_IMM8_X0_TLS_ADD:
3338 mask = insn_mask_X0_no_operand;
3339 break;
3340 case R_TILEGX_IMM8_X1_TLS_ADD:
3341 mask = insn_mask_X1_no_operand;
3342 break;
3343 case R_TILEGX_IMM8_Y0_TLS_ADD:
3344 mask = insn_mask_Y0_no_operand;
3345 break;
3346 case R_TILEGX_IMM8_Y1_TLS_ADD:
3347 mask = insn_mask_Y1_no_operand;
3348 break;
3349 }
3350 }
3351
3352 tilegx_copy_bits (contents + rel->r_offset, dest_begin,
3353 src_begin, 6);
3354 tilegx_replace_insn (contents + rel->r_offset, mask, insn);
3355
3356 continue;
3357 }
3358 else
3359 {
3360 const bfd_byte *mask = NULL;
3361 const bfd_byte *add_insn = NULL;
3362 bfd_boolean is_64bit = ABI_64_P (output_bfd);
3363
3364 switch (r_type)
3365 {
3366 case R_TILEGX_IMM8_X0_TLS_GD_ADD:
3367 add_insn = is_tls_iele
3368 ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1)
3369 : insn_tls_gd_add_X0X1;
3370 mask = insn_mask_X0_no_dest_no_srca;
3371 break;
3372 case R_TILEGX_IMM8_X1_TLS_GD_ADD:
3373 add_insn = is_tls_iele
3374 ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1)
3375 : insn_tls_gd_add_X0X1;
3376 mask = insn_mask_X1_no_dest_no_srca;
3377 break;
3378 case R_TILEGX_IMM8_Y0_TLS_GD_ADD:
3379 add_insn = is_tls_iele
3380 ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1)
3381 : insn_tls_gd_add_Y0Y1;
3382 mask = insn_mask_Y0_no_dest_no_srca;
3383 break;
3384 case R_TILEGX_IMM8_Y1_TLS_GD_ADD:
3385 add_insn = is_tls_iele
3386 ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1)
3387 : insn_tls_gd_add_Y0Y1;
3388 mask = insn_mask_Y1_no_dest_no_srca;
3389 break;
3390 }
3391
3392 tilegx_replace_insn (contents + rel->r_offset, mask, add_insn);
3393
3394 continue;
3395 }
3396 break;
3397 case R_TILEGX_TLS_IE_LOAD:
3398 if (!input_section->sec_flg0
3399 && !bfd_link_pic (info)
3400 && (h == NULL || h->dynindx == -1))
3401 {
3402 /* IE -> LE */
3403 tilegx_replace_insn (contents + rel->r_offset,
3404 insn_mask_X1_no_dest_no_srca,
3405 insn_move_X0X1);
3406 }
3407 else
3408 {
3409 /* IE -> IE */
3410 if (ABI_64_P (output_bfd))
3411 tilegx_replace_insn (contents + rel->r_offset,
3412 insn_mask_X1_no_dest_no_srca,
3413 insn_tls_ie_ld_X1);
3414 else
3415 tilegx_replace_insn (contents + rel->r_offset,
3416 insn_mask_X1_no_dest_no_srca,
3417 insn_tls_ie_ld4s_X1);
3418 }
3419 continue;
3420 break;
3421 default:
3422 break;
3423 }
3424
3425 switch (r_type)
3426 {
3427 case R_TILEGX_IMM16_X0_HW0_GOT:
3428 case R_TILEGX_IMM16_X1_HW0_GOT:
3429 case R_TILEGX_IMM16_X0_HW0_LAST_GOT:
3430 case R_TILEGX_IMM16_X1_HW0_LAST_GOT:
3431 case R_TILEGX_IMM16_X0_HW1_LAST_GOT:
3432 case R_TILEGX_IMM16_X1_HW1_LAST_GOT:
3433 /* Relocation is to the entry for this symbol in the global
3434 offset table. */
3435 if (htab->elf.sgot == NULL)
3436 abort ();
3437
3438 if (h != NULL)
3439 {
3440 bfd_boolean dyn;
3441
3442 off = h->got.offset;
3443 BFD_ASSERT (off != (bfd_vma) -1);
3444 dyn = elf_hash_table (info)->dynamic_sections_created;
3445
3446 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3447 bfd_link_pic (info),
3448 h)
3449 || (bfd_link_pic (info)
3450 && SYMBOL_REFERENCES_LOCAL (info, h)))
3451 {
3452 /* This is actually a static link, or it is a
3453 -Bsymbolic link and the symbol is defined
3454 locally, or the symbol was forced to be local
3455 because of a version file. We must initialize
3456 this entry in the global offset table. Since the
3457 offset must always be a multiple
3458 of 8 for 64-bit, we use the least significant bit
3459 to record whether we have initialized it already.
3460
3461 When doing a dynamic link, we create a .rela.got
3462 relocation entry to initialize the value. This
3463 is done in the finish_dynamic_symbol routine. */
3464 if ((off & 1) != 0)
3465 off &= ~1;
3466 else
3467 {
3468 TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation,
3469 htab->elf.sgot->contents + off);
3470 h->got.offset |= 1;
3471 }
3472 }
3473 else
3474 unresolved_reloc = FALSE;
3475 }
3476 else
3477 {
3478 BFD_ASSERT (local_got_offsets != NULL
3479 && local_got_offsets[r_symndx] != (bfd_vma) -1);
3480
3481 off = local_got_offsets[r_symndx];
3482
3483 /* The offset must always be a multiple of 8 on 64-bit.
3484 We use the least significant bit to record
3485 whether we have already processed this entry. */
3486 if ((off & 1) != 0)
3487 off &= ~1;
3488 else
3489 {
3490 if (bfd_link_pic (info))
3491 {
3492 asection *s;
3493 Elf_Internal_Rela outrel;
3494
3495 /* We need to generate a R_TILEGX_RELATIVE reloc
3496 for the dynamic linker. */
3497 s = htab->elf.srelgot;
3498 BFD_ASSERT (s != NULL);
3499
3500 outrel.r_offset = (htab->elf.sgot->output_section->vma
3501 + htab->elf.sgot->output_offset
3502 + off);
3503 outrel.r_info =
3504 TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE);
3505 outrel.r_addend = relocation;
3506 relocation = 0;
3507 tilegx_elf_append_rela (output_bfd, s, &outrel);
3508 }
3509
3510 TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation,
3511 htab->elf.sgot->contents + off);
3512 local_got_offsets[r_symndx] |= 1;
3513 }
3514 }
3515 relocation = off - got_base;
3516 break;
3517
3518 case R_TILEGX_JUMPOFF_X1_PLT:
3519 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL:
3520 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL:
3521 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL:
3522 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL:
3523 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL:
3524 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL:
3525 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL:
3526 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL:
3527 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL:
3528 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL:
3529 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL:
3530 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL:
3531 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL:
3532 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL:
3533 /* Relocation is to the entry for this symbol in the
3534 procedure linkage table. */
3535 BFD_ASSERT (h != NULL);
3536
3537 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL)
3538 {
3539 /* We didn't make a PLT entry for this symbol. This
3540 happens when statically linking PIC code, or when
3541 using -Bsymbolic. */
3542 break;
3543 }
3544
3545 relocation = (htab->elf.splt->output_section->vma
3546 + htab->elf.splt->output_offset
3547 + h->plt.offset);
3548 unresolved_reloc = FALSE;
3549 break;
3550
3551 case R_TILEGX_64_PCREL:
3552 case R_TILEGX_32_PCREL:
3553 case R_TILEGX_16_PCREL:
3554 case R_TILEGX_8_PCREL:
3555 case R_TILEGX_IMM16_X0_HW0_PCREL:
3556 case R_TILEGX_IMM16_X1_HW0_PCREL:
3557 case R_TILEGX_IMM16_X0_HW1_PCREL:
3558 case R_TILEGX_IMM16_X1_HW1_PCREL:
3559 case R_TILEGX_IMM16_X0_HW2_PCREL:
3560 case R_TILEGX_IMM16_X1_HW2_PCREL:
3561 case R_TILEGX_IMM16_X0_HW3_PCREL:
3562 case R_TILEGX_IMM16_X1_HW3_PCREL:
3563 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL:
3564 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL:
3565 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL:
3566 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL:
3567 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL:
3568 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL:
3569 if (h != NULL
3570 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3571 break;
3572 /* Fall through. */
3573 case R_TILEGX_64:
3574 case R_TILEGX_32:
3575 case R_TILEGX_16:
3576 case R_TILEGX_8:
3577 case R_TILEGX_HW0:
3578 case R_TILEGX_HW1:
3579 case R_TILEGX_HW2:
3580 case R_TILEGX_HW3:
3581 case R_TILEGX_HW0_LAST:
3582 case R_TILEGX_HW1_LAST:
3583 case R_TILEGX_HW2_LAST:
3584 case R_TILEGX_COPY:
3585 case R_TILEGX_GLOB_DAT:
3586 case R_TILEGX_JMP_SLOT:
3587 case R_TILEGX_RELATIVE:
3588 case R_TILEGX_BROFF_X1:
3589 case R_TILEGX_JUMPOFF_X1:
3590 case R_TILEGX_IMM8_X0:
3591 case R_TILEGX_IMM8_Y0:
3592 case R_TILEGX_IMM8_X1:
3593 case R_TILEGX_IMM8_Y1:
3594 case R_TILEGX_DEST_IMM8_X1:
3595 case R_TILEGX_MT_IMM14_X1:
3596 case R_TILEGX_MF_IMM14_X1:
3597 case R_TILEGX_MMSTART_X0:
3598 case R_TILEGX_MMEND_X0:
3599 case R_TILEGX_SHAMT_X0:
3600 case R_TILEGX_SHAMT_X1:
3601 case R_TILEGX_SHAMT_Y0:
3602 case R_TILEGX_SHAMT_Y1:
3603 case R_TILEGX_IMM16_X0_HW0:
3604 case R_TILEGX_IMM16_X1_HW0:
3605 case R_TILEGX_IMM16_X0_HW1:
3606 case R_TILEGX_IMM16_X1_HW1:
3607 case R_TILEGX_IMM16_X0_HW2:
3608 case R_TILEGX_IMM16_X1_HW2:
3609 case R_TILEGX_IMM16_X0_HW3:
3610 case R_TILEGX_IMM16_X1_HW3:
3611 case R_TILEGX_IMM16_X0_HW0_LAST:
3612 case R_TILEGX_IMM16_X1_HW0_LAST:
3613 case R_TILEGX_IMM16_X0_HW1_LAST:
3614 case R_TILEGX_IMM16_X1_HW1_LAST:
3615 case R_TILEGX_IMM16_X0_HW2_LAST:
3616 case R_TILEGX_IMM16_X1_HW2_LAST:
3617 if ((input_section->flags & SEC_ALLOC) == 0)
3618 break;
3619
3620 if ((bfd_link_pic (info)
3621 && (h == NULL
3622 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3623 || h->root.type != bfd_link_hash_undefweak)
3624 && (! howto->pc_relative
3625 || !SYMBOL_CALLS_LOCAL (info, h)))
3626 || (!bfd_link_pic (info)
3627 && h != NULL
3628 && h->dynindx != -1
3629 && !h->non_got_ref
3630 && ((h->def_dynamic
3631 && !h->def_regular)
3632 || h->root.type == bfd_link_hash_undefweak
3633 || h->root.type == bfd_link_hash_undefined)))
3634 {
3635 Elf_Internal_Rela outrel;
3636 bfd_boolean skip, relocate = FALSE;
3637
3638 /* When generating a shared object, these relocations
3639 are copied into the output file to be resolved at run
3640 time. */
3641
3642 BFD_ASSERT (sreloc != NULL);
3643
3644 skip = FALSE;
3645
3646 outrel.r_offset =
3647 _bfd_elf_section_offset (output_bfd, info, input_section,
3648 rel->r_offset);
3649 if (outrel.r_offset == (bfd_vma) -1)
3650 skip = TRUE;
3651 else if (outrel.r_offset == (bfd_vma) -2)
3652 skip = TRUE, relocate = TRUE;
3653 outrel.r_offset += (input_section->output_section->vma
3654 + input_section->output_offset);
3655
3656 switch (r_type)
3657 {
3658 case R_TILEGX_64_PCREL:
3659 case R_TILEGX_32_PCREL:
3660 case R_TILEGX_16_PCREL:
3661 case R_TILEGX_8_PCREL:
3662 /* If the symbol is not dynamic, we should not keep
3663 a dynamic relocation. But an .rela.* slot has been
3664 allocated for it, output R_TILEGX_NONE.
3665 FIXME: Add code tracking needed dynamic relocs as
3666 e.g. i386 has. */
3667 if (h->dynindx == -1)
3668 skip = TRUE, relocate = TRUE;
3669 break;
3670 }
3671
3672 if (skip)
3673 memset (&outrel, 0, sizeof outrel);
3674 /* h->dynindx may be -1 if the symbol was marked to
3675 become local. */
3676 else if (h != NULL &&
3677 h->dynindx != -1
3678 && (! is_plt
3679 || !bfd_link_pic (info)
3680 || !SYMBOLIC_BIND (info, h)
3681 || !h->def_regular))
3682 {
3683 BFD_ASSERT (h->dynindx != -1);
3684 outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3685 outrel.r_addend = rel->r_addend;
3686 }
3687 else
3688 {
3689 if (r_type == R_TILEGX_32 || r_type == R_TILEGX_64)
3690 {
3691 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0,
3692 R_TILEGX_RELATIVE);
3693 outrel.r_addend = relocation + rel->r_addend;
3694 }
3695 else
3696 {
3697 long indx;
3698
3699 outrel.r_addend = relocation + rel->r_addend;
3700
3701 if (is_plt)
3702 sec = htab->elf.splt;
3703
3704 if (bfd_is_abs_section (sec))
3705 indx = 0;
3706 else if (sec == NULL || sec->owner == NULL)
3707 {
3708 bfd_set_error (bfd_error_bad_value);
3709 return FALSE;
3710 }
3711 else
3712 {
3713 asection *osec;
3714
3715 /* We are turning this relocation into one
3716 against a section symbol. It would be
3717 proper to subtract the symbol's value,
3718 osec->vma, from the emitted reloc addend,
3719 but ld.so expects buggy relocs. */
3720 osec = sec->output_section;
3721 indx = elf_section_data (osec)->dynindx;
3722
3723 if (indx == 0)
3724 {
3725 osec = htab->elf.text_index_section;
3726 indx = elf_section_data (osec)->dynindx;
3727 }
3728
3729 /* FIXME: we really should be able to link non-pic
3730 shared libraries. */
3731 if (indx == 0)
3732 {
3733 BFD_FAIL ();
3734 _bfd_error_handler
3735 (_("%B: probably compiled without -fPIC?"),
3736 input_bfd);
3737 bfd_set_error (bfd_error_bad_value);
3738 return FALSE;
3739 }
3740 }
3741
3742 outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, indx,
3743 r_type);
3744 }
3745 }
3746
3747 tilegx_elf_append_rela (output_bfd, sreloc, &outrel);
3748
3749 /* This reloc will be computed at runtime, so there's no
3750 need to do anything now. */
3751 if (! relocate)
3752 continue;
3753 }
3754 break;
3755
3756 case R_TILEGX_IMM16_X0_HW0_TLS_LE:
3757 case R_TILEGX_IMM16_X1_HW0_TLS_LE:
3758 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE:
3759 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE:
3760 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE:
3761 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE:
3762 if (bfd_link_pic (info))
3763 {
3764 Elf_Internal_Rela outrel;
3765 bfd_boolean skip;
3766
3767 BFD_ASSERT (sreloc != NULL);
3768 skip = FALSE;
3769 outrel.r_offset =
3770 _bfd_elf_section_offset (output_bfd, info, input_section,
3771 rel->r_offset);
3772 if (outrel.r_offset == (bfd_vma) -1)
3773 skip = TRUE;
3774 else if (outrel.r_offset == (bfd_vma) -2)
3775 skip = TRUE;
3776 outrel.r_offset += (input_section->output_section->vma
3777 + input_section->output_offset);
3778 if (skip)
3779 memset (&outrel, 0, sizeof outrel);
3780 else
3781 {
3782 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, r_type);
3783 outrel.r_addend = relocation - dtpoff_base (info)
3784 + rel->r_addend;
3785 }
3786
3787 tilegx_elf_append_rela (output_bfd, sreloc, &outrel);
3788 continue;
3789 }
3790 relocation = tpoff (info, relocation);
3791 break;
3792
3793 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
3794 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
3795 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
3796 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
3797 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
3798 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
3799 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
3800 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
3801 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
3802 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
3803 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
3804 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
3805 r_type = tilegx_elf_tls_transition (info, r_type, h == NULL,
3806 input_section->sec_flg0);
3807 tls_type = GOT_UNKNOWN;
3808 if (h == NULL && local_got_offsets)
3809 tls_type =
3810 _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx];
3811 else if (h != NULL)
3812 {
3813 tls_type = tilegx_elf_hash_entry(h)->tls_type;
3814 if (!bfd_link_pic (info)
3815 && h->dynindx == -1
3816 && tls_type == GOT_TLS_IE)
3817 r_type = (!input_section->sec_flg0
3818 ? tilegx_tls_translate_to_le (r_type)
3819 : tilegx_tls_translate_to_ie (r_type));
3820 }
3821
3822 if (tls_type == GOT_TLS_IE)
3823 r_type = tilegx_tls_translate_to_ie (r_type);
3824
3825 if (r_type == R_TILEGX_IMM16_X0_HW0_TLS_LE
3826 || r_type == R_TILEGX_IMM16_X1_HW0_TLS_LE
3827 || r_type == R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE
3828 || r_type == R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE
3829 || r_type == R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE
3830 || r_type == R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE)
3831 {
3832 relocation = tpoff (info, relocation);
3833 break;
3834 }
3835
3836 if (h != NULL)
3837 {
3838 off = h->got.offset;
3839 h->got.offset |= 1;
3840 }
3841 else
3842 {
3843 BFD_ASSERT (local_got_offsets != NULL);
3844 off = local_got_offsets[r_symndx];
3845 local_got_offsets[r_symndx] |= 1;
3846 }
3847
3848 if (htab->elf.sgot == NULL)
3849 abort ();
3850
3851 if ((off & 1) != 0)
3852 off &= ~1;
3853 else
3854 {
3855 Elf_Internal_Rela outrel;
3856 int indx = 0;
3857 bfd_boolean need_relocs = FALSE;
3858
3859 if (htab->elf.srelgot == NULL)
3860 abort ();
3861
3862 if (h != NULL)
3863 {
3864 bfd_boolean dyn;
3865 dyn = htab->elf.dynamic_sections_created;
3866
3867 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3868 bfd_link_pic (info),
3869 h)
3870 && (!bfd_link_pic (info)
3871 || !SYMBOL_REFERENCES_LOCAL (info, h)))
3872 {
3873 indx = h->dynindx;
3874 }
3875 }
3876
3877 /* The GOT entries have not been initialized yet. Do it
3878 now, and emit any relocations. */
3879 if ((bfd_link_pic (info) || indx != 0)
3880 && (h == NULL
3881 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3882 || h->root.type != bfd_link_hash_undefweak))
3883 need_relocs = TRUE;
3884
3885 switch (r_type)
3886 {
3887 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
3888 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
3889 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
3890 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
3891 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
3892 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
3893 if (need_relocs) {
3894 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
3895 htab->elf.sgot->contents + off);
3896 outrel.r_offset = (htab->elf.sgot->output_section->vma
3897 + htab->elf.sgot->output_offset + off);
3898 outrel.r_addend = 0;
3899 if (indx == 0)
3900 outrel.r_addend = relocation - dtpoff_base (info);
3901 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx,
3902 TILEGX_ELF_TPOFF_RELOC (htab));
3903 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3904 } else {
3905 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3906 tpoff (info, relocation),
3907 htab->elf.sgot->contents + off);
3908 }
3909 break;
3910
3911 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
3912 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
3913 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
3914 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
3915 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
3916 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
3917 if (need_relocs) {
3918 outrel.r_offset = (htab->elf.sgot->output_section->vma
3919 + htab->elf.sgot->output_offset + off);
3920 outrel.r_addend = 0;
3921 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx,
3922 TILEGX_ELF_DTPMOD_RELOC (htab));
3923 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
3924 htab->elf.sgot->contents + off);
3925 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3926 if (indx == 0)
3927 {
3928 BFD_ASSERT (! unresolved_reloc);
3929 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3930 relocation - dtpoff_base (info),
3931 (htab->elf.sgot->contents + off +
3932 TILEGX_ELF_WORD_BYTES (htab)));
3933 }
3934 else
3935 {
3936 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
3937 (htab->elf.sgot->contents + off +
3938 TILEGX_ELF_WORD_BYTES (htab)));
3939 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx,
3940 TILEGX_ELF_DTPOFF_RELOC (htab));
3941 outrel.r_offset += TILEGX_ELF_WORD_BYTES (htab);
3942 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3943 }
3944 }
3945
3946 else {
3947 /* If we are not emitting relocations for a
3948 general dynamic reference, then we must be in a
3949 static link or an executable link with the
3950 symbol binding locally. Mark it as belonging
3951 to module 1, the executable. */
3952 TILEGX_ELF_PUT_WORD (htab, output_bfd, 1,
3953 htab->elf.sgot->contents + off );
3954 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3955 relocation - dtpoff_base (info),
3956 htab->elf.sgot->contents + off +
3957 TILEGX_ELF_WORD_BYTES (htab));
3958 }
3959 break;
3960 }
3961 }
3962
3963 if (off >= (bfd_vma) -2)
3964 abort ();
3965
3966 relocation = off - got_base;
3967 unresolved_reloc = FALSE;
3968 howto = tilegx_elf_howto_table + r_type;
3969 break;
3970
3971 default:
3972 break;
3973 }
3974
3975 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3976 because such sections are not SEC_ALLOC and thus ld.so will
3977 not process them. */
3978 if (unresolved_reloc
3979 && !((input_section->flags & SEC_DEBUGGING) != 0
3980 && h->def_dynamic)
3981 && _bfd_elf_section_offset (output_bfd, info, input_section,
3982 rel->r_offset) != (bfd_vma) -1)
3983 _bfd_error_handler
3984 /* xgettext:c-format */
3985 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
3986 input_bfd,
3987 input_section,
3988 (long) rel->r_offset,
3989 howto->name,
3990 h->root.root.string);
3991
3992 r = bfd_reloc_continue;
3993
3994 /* Get the operand creation function, if any. */
3995 create_func = reloc_to_create_func[r_type];
3996 if (create_func == NULL)
3997 {
3998 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3999 contents, rel->r_offset,
4000 relocation, rel->r_addend);
4001 }
4002 else
4003 {
4004 if (howto->pc_relative)
4005 {
4006 relocation -=
4007 input_section->output_section->vma + input_section->output_offset;
4008 if (howto->pcrel_offset)
4009 relocation -= rel->r_offset;
4010 }
4011
4012 bfd_byte *data;
4013
4014 /* Add the relocation addend if any to the final target value */
4015 relocation += rel->r_addend;
4016
4017 /* Do basic range checking */
4018 r = bfd_check_overflow (howto->complain_on_overflow,
4019 howto->bitsize,
4020 howto->rightshift,
4021 TILEGX_ELF_WORD_BYTES (htab) * 8,
4022 relocation);
4023
4024 /*
4025 * Write the relocated value out into the raw section data.
4026 * Don't put a relocation out in the .rela section.
4027 */
4028 tilegx_bundle_bits mask = create_func(-1);
4029 tilegx_bundle_bits value = create_func(relocation >> howto->rightshift);
4030
4031 /* Only touch bytes while the mask is not 0, so we
4032 don't write to out of bounds memory if this is actually
4033 a 16-bit switch instruction. */
4034 for (data = contents + rel->r_offset; mask != 0; data++)
4035 {
4036 bfd_byte byte_mask = (bfd_byte)mask;
4037 *data = (*data & ~byte_mask) | ((bfd_byte)value & byte_mask);
4038 mask >>= 8;
4039 value >>= 8;
4040 }
4041 }
4042
4043 if (r != bfd_reloc_ok)
4044 {
4045 const char *msg = NULL;
4046
4047 switch (r)
4048 {
4049 case bfd_reloc_overflow:
4050 (*info->callbacks->reloc_overflow)
4051 (info, (h ? &h->root : NULL), name, howto->name,
4052 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
4053 break;
4054
4055 case bfd_reloc_undefined:
4056 (*info->callbacks->undefined_symbol)
4057 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
4058 break;
4059
4060 case bfd_reloc_outofrange:
4061 msg = _("internal error: out of range error");
4062 break;
4063
4064 case bfd_reloc_notsupported:
4065 msg = _("internal error: unsupported relocation error");
4066 break;
4067
4068 case bfd_reloc_dangerous:
4069 msg = _("internal error: dangerous relocation");
4070 break;
4071
4072 default:
4073 msg = _("internal error: unknown error");
4074 break;
4075 }
4076
4077 if (msg)
4078 (*info->callbacks->warning) (info, msg, name, input_bfd,
4079 input_section, rel->r_offset);
4080 }
4081 }
4082
4083 return TRUE;
4084 }
4085
4086 /* Finish up dynamic symbol handling. We set the contents of various
4087 dynamic sections here. */
4088
4089 bfd_boolean
4090 tilegx_elf_finish_dynamic_symbol (bfd *output_bfd,
4091 struct bfd_link_info *info,
4092 struct elf_link_hash_entry *h,
4093 Elf_Internal_Sym *sym)
4094 {
4095 struct tilegx_elf_link_hash_table *htab;
4096
4097 htab = tilegx_elf_hash_table (info);
4098 BFD_ASSERT (htab != NULL);
4099
4100 if (h->plt.offset != (bfd_vma) -1)
4101 {
4102 asection *splt;
4103 asection *srela;
4104 asection *sgotplt;
4105 Elf_Internal_Rela rela;
4106 bfd_byte *loc;
4107 bfd_vma r_offset;
4108 const struct elf_backend_data *bed = get_elf_backend_data (output_bfd);
4109
4110
4111 int rela_index;
4112
4113 /* This symbol has an entry in the PLT. Set it up. */
4114
4115 BFD_ASSERT (h->dynindx != -1);
4116
4117 splt = htab->elf.splt;
4118 srela = htab->elf.srelplt;
4119 sgotplt = htab->elf.sgotplt;
4120
4121 if (splt == NULL || srela == NULL)
4122 abort ();
4123
4124 /* Fill in the entry in the procedure linkage table. */
4125 rela_index = tilegx_plt_entry_build (output_bfd, htab, splt, sgotplt,
4126 h->plt.offset, &r_offset);
4127
4128 /* Fill in the entry in the global offset table, which initially points
4129 to the beginning of the plt. */
4130 TILEGX_ELF_PUT_WORD (htab, output_bfd,
4131 splt->output_section->vma + splt->output_offset,
4132 sgotplt->contents + r_offset);
4133
4134 /* Fill in the entry in the .rela.plt section. */
4135 rela.r_offset = (sgotplt->output_section->vma
4136 + sgotplt->output_offset
4137 + r_offset);
4138 rela.r_addend = 0;
4139 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_JMP_SLOT);
4140
4141 loc = srela->contents + rela_index * TILEGX_ELF_RELA_BYTES (htab);
4142 bed->s->swap_reloca_out (output_bfd, &rela, loc);
4143
4144 if (!h->def_regular)
4145 {
4146 /* Mark the symbol as undefined, rather than as defined in
4147 the .plt section. Leave the value alone. */
4148 sym->st_shndx = SHN_UNDEF;
4149 /* If the symbol is weak, we do need to clear the value.
4150 Otherwise, the PLT entry would provide a definition for
4151 the symbol even if the symbol wasn't defined anywhere,
4152 and so the symbol would never be NULL. */
4153 if (!h->ref_regular_nonweak)
4154 sym->st_value = 0;
4155 }
4156 }
4157
4158 if (h->got.offset != (bfd_vma) -1
4159 && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_GD
4160 && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_IE)
4161 {
4162 asection *sgot;
4163 asection *srela;
4164 Elf_Internal_Rela rela;
4165
4166 /* This symbol has an entry in the GOT. Set it up. */
4167
4168 sgot = htab->elf.sgot;
4169 srela = htab->elf.srelgot;
4170 BFD_ASSERT (sgot != NULL && srela != NULL);
4171
4172 rela.r_offset = (sgot->output_section->vma
4173 + sgot->output_offset
4174 + (h->got.offset &~ (bfd_vma) 1));
4175
4176 /* If this is a -Bsymbolic link, and the symbol is defined
4177 locally, we just want to emit a RELATIVE reloc. Likewise if
4178 the symbol was forced to be local because of a version file.
4179 The entry in the global offset table will already have been
4180 initialized in the relocate_section function. */
4181 if (bfd_link_pic (info)
4182 && (info->symbolic || h->dynindx == -1)
4183 && h->def_regular)
4184 {
4185 asection *sec = h->root.u.def.section;
4186 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE);
4187 rela.r_addend = (h->root.u.def.value
4188 + sec->output_section->vma
4189 + sec->output_offset);
4190 }
4191 else
4192 {
4193 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_GLOB_DAT);
4194 rela.r_addend = 0;
4195 }
4196
4197 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
4198 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
4199 tilegx_elf_append_rela (output_bfd, srela, &rela);
4200 }
4201
4202 if (h->needs_copy)
4203 {
4204 asection *s;
4205 Elf_Internal_Rela rela;
4206
4207 /* This symbols needs a copy reloc. Set it up. */
4208 BFD_ASSERT (h->dynindx != -1);
4209
4210 s = htab->srelbss;
4211 BFD_ASSERT (s != NULL);
4212
4213 rela.r_offset = (h->root.u.def.value
4214 + h->root.u.def.section->output_section->vma
4215 + h->root.u.def.section->output_offset);
4216 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_COPY);
4217 rela.r_addend = 0;
4218 tilegx_elf_append_rela (output_bfd, s, &rela);
4219 }
4220
4221 /* Mark some specially defined symbols as absolute. */
4222 if (h == htab->elf.hdynamic
4223 || (h == htab->elf.hgot || h == htab->elf.hplt))
4224 sym->st_shndx = SHN_ABS;
4225
4226 return TRUE;
4227 }
4228
4229 /* Finish up the dynamic sections. */
4230
4231 static bfd_boolean
4232 tilegx_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
4233 bfd *dynobj, asection *sdyn,
4234 asection *splt ATTRIBUTE_UNUSED)
4235 {
4236 struct tilegx_elf_link_hash_table *htab;
4237 const struct elf_backend_data *bed;
4238 bfd_byte *dyncon, *dynconend;
4239 size_t dynsize;
4240
4241 htab = tilegx_elf_hash_table (info);
4242 BFD_ASSERT (htab != NULL);
4243 bed = get_elf_backend_data (output_bfd);
4244 dynsize = bed->s->sizeof_dyn;
4245 dynconend = sdyn->contents + sdyn->size;
4246
4247 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize)
4248 {
4249 Elf_Internal_Dyn dyn;
4250 asection *s;
4251
4252 bed->s->swap_dyn_in (dynobj, dyncon, &dyn);
4253
4254 switch (dyn.d_tag)
4255 {
4256 case DT_PLTGOT:
4257 s = htab->elf.sgotplt;
4258 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4259 break;
4260 case DT_JMPREL:
4261 s = htab->elf.srelplt;
4262 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4263 break;
4264 case DT_PLTRELSZ:
4265 s = htab->elf.srelplt;
4266 dyn.d_un.d_val = s->size;
4267 break;
4268 default:
4269 continue;
4270 }
4271
4272 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4273 }
4274 return TRUE;
4275 }
4276
4277 bfd_boolean
4278 tilegx_elf_finish_dynamic_sections (bfd *output_bfd,
4279 struct bfd_link_info *info)
4280 {
4281 bfd *dynobj;
4282 asection *sdyn;
4283 struct tilegx_elf_link_hash_table *htab;
4284 size_t pad_size;
4285
4286 htab = tilegx_elf_hash_table (info);
4287 BFD_ASSERT (htab != NULL);
4288 dynobj = htab->elf.dynobj;
4289
4290 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4291
4292 if (elf_hash_table (info)->dynamic_sections_created)
4293 {
4294 asection *splt;
4295 bfd_boolean ret;
4296
4297 splt = htab->elf.splt;
4298 BFD_ASSERT (splt != NULL && sdyn != NULL);
4299
4300 ret = tilegx_finish_dyn (output_bfd, info, dynobj, sdyn, splt);
4301
4302 if (ret != TRUE)
4303 return ret;
4304
4305 /* Fill in the head and tail entries in the procedure linkage table. */
4306 if (splt->size > 0)
4307 {
4308 memcpy (splt->contents,
4309 ABI_64_P (output_bfd) ?
4310 tilegx64_plt0_entry : tilegx32_plt0_entry,
4311 PLT_HEADER_SIZE);
4312
4313 memcpy (splt->contents + splt->size
4314 - PLT_ENTRY_SIZE + PLT_HEADER_SIZE,
4315 ABI_64_P (output_bfd) ?
4316 tilegx64_plt_tail_entry : tilegx32_plt_tail_entry,
4317 PLT_TAIL_SIZE);
4318 /* Add padding so that the plt section is a multiple of its
4319 entry size. */
4320 pad_size = PLT_ENTRY_SIZE - PLT_HEADER_SIZE - PLT_TAIL_SIZE;
4321 memset (splt->contents + splt->size - pad_size, 0, pad_size);
4322 }
4323
4324 elf_section_data (splt->output_section)->this_hdr.sh_entsize
4325 = PLT_ENTRY_SIZE;
4326 }
4327
4328 if (htab->elf.sgotplt)
4329 {
4330 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
4331 {
4332 _bfd_error_handler
4333 (_("discarded output section: `%A'"), htab->elf.sgotplt);
4334 return FALSE;
4335 }
4336
4337 if (htab->elf.sgotplt->size > 0)
4338 {
4339 /* Write the first two entries in .got.plt, needed for the dynamic
4340 linker. */
4341 TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) -1,
4342 htab->elf.sgotplt->contents);
4343 TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) 0,
4344 htab->elf.sgotplt->contents
4345 + GOT_ENTRY_SIZE (htab));
4346 }
4347
4348 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize =
4349 GOT_ENTRY_SIZE (htab);
4350 }
4351
4352 if (htab->elf.sgot)
4353 {
4354 if (htab->elf.sgot->size > 0)
4355 {
4356 /* Set the first entry in the global offset table to the address of
4357 the dynamic section. */
4358 bfd_vma val = (sdyn ?
4359 sdyn->output_section->vma + sdyn->output_offset :
4360 0);
4361 TILEGX_ELF_PUT_WORD (htab, output_bfd, val,
4362 htab->elf.sgot->contents);
4363 }
4364
4365 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize =
4366 GOT_ENTRY_SIZE (htab);
4367 }
4368
4369 return TRUE;
4370 }
4371
4372 \f
4373
4374 /* Return address for Ith PLT stub in section PLT, for relocation REL
4375 or (bfd_vma) -1 if it should not be included. */
4376
4377 bfd_vma
4378 tilegx_elf_plt_sym_val (bfd_vma i, const asection *plt,
4379 const arelent *rel ATTRIBUTE_UNUSED)
4380 {
4381 return plt->vma + PLT_HEADER_SIZE + i * PLT_ENTRY_SIZE;
4382 }
4383
4384 enum elf_reloc_type_class
4385 tilegx_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4386 const asection *rel_sec ATTRIBUTE_UNUSED,
4387 const Elf_Internal_Rela *rela)
4388 {
4389 switch ((int) TILEGX_ELF_R_TYPE (rela->r_info))
4390 {
4391 case R_TILEGX_RELATIVE:
4392 return reloc_class_relative;
4393 case R_TILEGX_JMP_SLOT:
4394 return reloc_class_plt;
4395 case R_TILEGX_COPY:
4396 return reloc_class_copy;
4397 default:
4398 return reloc_class_normal;
4399 }
4400 }
4401
4402 int
4403 tilegx_additional_program_headers (bfd *abfd,
4404 struct bfd_link_info *info ATTRIBUTE_UNUSED)
4405 {
4406 /* Each .intrpt section specified by the user adds another PT_LOAD
4407 header since the sections are discontiguous. */
4408 static const char intrpt_sections[4][9] =
4409 {
4410 ".intrpt0", ".intrpt1", ".intrpt2", ".intrpt3"
4411 };
4412 int count = 0;
4413 int i;
4414
4415 for (i = 0; i < 4; i++)
4416 {
4417 asection *sec = bfd_get_section_by_name (abfd, intrpt_sections[i]);
4418 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
4419 ++count;
4420 }
4421
4422 /* Add four "padding" headers in to leave room in case a custom linker
4423 script does something fancy. Otherwise ld complains that it ran
4424 out of program headers and refuses to link. */
4425 count += 4;
4426
4427 return count;
4428 }
4429
4430
4431 bfd_boolean
4432 _bfd_tilegx_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4433 {
4434 bfd *obfd = info->output_bfd;
4435 const char *targ1 = bfd_get_target (ibfd);
4436 const char *targ2 = bfd_get_target (obfd);
4437
4438 if (strcmp (targ1, targ2) != 0)
4439 {
4440 _bfd_error_handler
4441 /* xgettext:c-format */
4442 (_("%B: Cannot link together %s and %s objects."),
4443 ibfd, targ1, targ2);
4444 bfd_set_error (bfd_error_bad_value);
4445 return FALSE;
4446 }
4447
4448 return TRUE;
4449 }
GDB Binutils - Deliverables
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