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ELF: Call check_relocs after opening all inputs
[deliverable/binutils-gdb.git] / bfd / elfxx-tilegx.c
1 /* TILE-Gx-specific support for ELF.
2 Copyright (C) 2011-2017 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 /* Whether LE transition has been disabled for some of the
859 sections. */
860 bfd_boolean disable_le_transition;
861
862 /* Small local sym to section mapping cache. */
863 struct sym_cache sym_cache;
864 };
865
866
867 /* Get the Tile ELF linker hash table from a link_info structure. */
868 #define tilegx_elf_hash_table(p) \
869 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
870 == TILEGX_ELF_DATA ? ((struct tilegx_elf_link_hash_table *) ((p)->hash)) : NULL)
871
872 #ifdef BFD64
873 static bfd_vma
874 tilegx_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
875 bfd_vma rel_index,
876 bfd_vma type)
877 {
878 return ELF64_R_INFO (rel_index, type);
879 }
880
881 static bfd_vma
882 tilegx_elf_r_symndx_64 (bfd_vma r_info)
883 {
884 return ELF64_R_SYM (r_info);
885 }
886
887 static void
888 tilegx_put_word_64 (bfd *abfd, bfd_vma val, void *ptr)
889 {
890 bfd_put_64 (abfd, val, ptr);
891 }
892 #endif /* BFD64 */
893
894 static bfd_vma
895 tilegx_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
896 bfd_vma rel_index,
897 bfd_vma type)
898 {
899 return ELF32_R_INFO (rel_index, type);
900 }
901
902 static bfd_vma
903 tilegx_elf_r_symndx_32 (bfd_vma r_info)
904 {
905 return ELF32_R_SYM (r_info);
906 }
907
908 static void
909 tilegx_put_word_32 (bfd *abfd, bfd_vma val, void *ptr)
910 {
911 bfd_put_32 (abfd, val, ptr);
912 }
913
914 reloc_howto_type *
915 tilegx_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
916 bfd_reloc_code_real_type code)
917 {
918 unsigned int i;
919
920 for (i = ARRAY_SIZE (tilegx_reloc_map); i--;)
921 {
922 const reloc_map * entry;
923
924 entry = tilegx_reloc_map + i;
925
926 if (entry->bfd_reloc_val == code)
927 return entry->table + (entry->tilegx_reloc_val
928 - entry->table[0].type);
929 }
930
931 return NULL;
932 }
933
934 reloc_howto_type *
935 tilegx_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
936 const char *r_name)
937 {
938 unsigned int i;
939
940 for (i = 0;
941 i < (sizeof (tilegx_elf_howto_table)
942 / sizeof (tilegx_elf_howto_table[0]));
943 i++)
944 if (tilegx_elf_howto_table[i].name != NULL
945 && strcasecmp (tilegx_elf_howto_table[i].name, r_name) == 0)
946 return &tilegx_elf_howto_table[i];
947
948 return NULL;
949 }
950
951 void
952 tilegx_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
953 arelent *cache_ptr,
954 Elf_Internal_Rela *dst)
955 {
956 unsigned int r_type = TILEGX_ELF_R_TYPE (dst->r_info);
957
958 if (r_type <= (unsigned int) R_TILEGX_IMM8_Y1_TLS_ADD)
959 cache_ptr->howto = &tilegx_elf_howto_table [r_type];
960 else if (r_type - R_TILEGX_GNU_VTINHERIT
961 <= (unsigned int) R_TILEGX_GNU_VTENTRY)
962 cache_ptr->howto
963 = &tilegx_elf_howto_table2 [r_type - R_TILEGX_GNU_VTINHERIT];
964 else
965 abort ();
966 }
967
968 typedef tilegx_bundle_bits (*tilegx_create_func)(int);
969
970 static const tilegx_create_func reloc_to_create_func[] =
971 {
972 /* The first twenty relocation types don't correspond to operands */
973 NULL,
974 NULL,
975 NULL,
976 NULL,
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
994 /* The remaining relocations are used for immediate operands */
995 create_BrOff_X1,
996 create_JumpOff_X1,
997 create_JumpOff_X1,
998 create_Imm8_X0,
999 create_Imm8_Y0,
1000 create_Imm8_X1,
1001 create_Imm8_Y1,
1002 create_Dest_Imm8_X1,
1003 create_MT_Imm14_X1,
1004 create_MF_Imm14_X1,
1005 create_BFStart_X0,
1006 create_BFEnd_X0,
1007 create_ShAmt_X0,
1008 create_ShAmt_X1,
1009 create_ShAmt_Y0,
1010 create_ShAmt_Y1,
1011 create_Imm16_X0,
1012 create_Imm16_X1,
1013 create_Imm16_X0,
1014 create_Imm16_X1,
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 NULL,
1066 NULL,
1067 create_Imm16_X0,
1068 create_Imm16_X1,
1069 create_Imm16_X0,
1070 create_Imm16_X1,
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 };
1080
1081 static void
1082 tilegx_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel)
1083 {
1084 const struct elf_backend_data *bed;
1085 bfd_byte *loc;
1086
1087 bed = get_elf_backend_data (abfd);
1088 loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela);
1089 bed->s->swap_reloca_out (abfd, rel, loc);
1090 }
1091
1092 /* PLT/GOT stuff */
1093
1094 /* The procedure linkage table starts with the following header:
1095
1096 ld_add r28, r27, 8
1097 ld r27, r27
1098 {
1099 jr r27
1100 info 10 ## SP not offset, return PC in LR
1101 }
1102
1103 Subsequent entries are the following, jumping to the header at the end:
1104
1105 {
1106 moveli r28, <_GLOBAL_OFFSET_TABLE_ - 1f + MY_GOT_OFFSET>
1107 lnk r26
1108 }
1109 1:
1110 {
1111 moveli r27, <_GLOBAL_OFFSET_TABLE_ - 1b>
1112 shl16insli r28, r28, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET>
1113 }
1114 {
1115 add r28, r26, r28
1116 shl16insli r27, r27, <_GLOBAL_OFFSET_TABLE_ - 1b>
1117 }
1118 {
1119 add r27, r26, r27
1120 ld r28, r28
1121 info 10 ## SP not offset, return PC in LR
1122 }
1123 {
1124 shl16insli r29, zero, MY_PLT_INDEX
1125 jr r28
1126 }
1127
1128 This code sequence lets the code at at the start of the PLT determine
1129 which PLT entry was executed by examining 'r29'.
1130
1131 Note that MY_PLT_INDEX skips over the header entries, so the first
1132 actual jump table entry has index zero.
1133
1134 If the offset fits in 16 bits,
1135
1136 lnk r26
1137 1:
1138 {
1139 addli r28, r26, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET>
1140 moveli r27, <_GLOBAL_OFFSET_TABLE_ - 1b>
1141 }
1142 {
1143 shl16insli r29, zero, MY_PLT_INDEX
1144 ld r28, r28
1145 }
1146 {
1147 add r27, r26, r27
1148 jr r28
1149 }
1150 info 10 ## SP not offset, return PC in LR
1151
1152 For the purpose of backtracing, the procedure linkage table ends with the
1153 following tail entry:
1154
1155 info 10 ## SP not offset, return PC in LR
1156
1157 The 32-bit versions are similar, with ld4s replacing ld, and offsets into
1158 the GOT being multiples of 4 instead of 8.
1159
1160 */
1161
1162 #define PLT_HEADER_SIZE_IN_BUNDLES 3
1163 #define PLT_ENTRY_SIZE_IN_BUNDLES 5
1164 #define PLT_TAIL_SIZE_IN_BUNDLES 1
1165
1166 #define PLT_HEADER_SIZE \
1167 (PLT_HEADER_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES)
1168 #define PLT_ENTRY_SIZE \
1169 (PLT_ENTRY_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES)
1170 #define PLT_TAIL_SIZE \
1171 (PLT_TAIL_SIZE_IN_BUNDLES * TILEGX_BUNDLE_SIZE_IN_BYTES)
1172
1173 #define GOT_ENTRY_SIZE(htab) TILEGX_ELF_WORD_BYTES (htab)
1174
1175 #define GOTPLT_HEADER_SIZE(htab) (2 * GOT_ENTRY_SIZE (htab))
1176
1177 static const bfd_byte
1178 tilegx64_plt0_entry[PLT_HEADER_SIZE] =
1179 {
1180 0x00, 0x30, 0x48, 0x51,
1181 0x6e, 0x43, 0xa0, 0x18, /* { ld_add r28, r27, 8 } */
1182 0x00, 0x30, 0xbc, 0x35,
1183 0x00, 0x40, 0xde, 0x9e, /* { ld r27, r27 } */
1184 0xff, 0xaf, 0x30, 0x40,
1185 0x60, 0x73, 0x6a, 0x28, /* { info 10 ; jr r27 } */
1186 };
1187
1188 static const bfd_byte
1189 tilegx64_long_plt_entry[PLT_ENTRY_SIZE] =
1190 {
1191 0xdc, 0x0f, 0x00, 0x10,
1192 0x0d, 0xf0, 0x6a, 0x28, /* { moveli r28, 0 ; lnk r26 } */
1193 0xdb, 0x0f, 0x00, 0x10,
1194 0x8e, 0x03, 0x00, 0x38, /* { moveli r27, 0 ; shl16insli r28, r28, 0 } */
1195 0x9c, 0xc6, 0x0d, 0xd0,
1196 0x6d, 0x03, 0x00, 0x38, /* { add r28, r26, r28 ; shl16insli r27, r27, 0 } */
1197 0x9b, 0xb6, 0xc5, 0xad,
1198 0xff, 0x57, 0xe0, 0x8e, /* { add r27, r26, r27 ; info 10 ; ld r28, r28 } */
1199 0xdd, 0x0f, 0x00, 0x70,
1200 0x80, 0x73, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; jr r28 } */
1201 };
1202
1203 static const bfd_byte
1204 tilegx64_short_plt_entry[PLT_ENTRY_SIZE] =
1205 {
1206 0x00, 0x30, 0x48, 0x51,
1207 0x0d, 0xf0, 0x6a, 0x28, /* { lnk r26 } */
1208 0x9c, 0x06, 0x00, 0x90,
1209 0xed, 0x07, 0x00, 0x00, /* { addli r28, r26, 0 ; moveli r27, 0 } */
1210 0xdd, 0x0f, 0x00, 0x70,
1211 0x8e, 0xeb, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; ld r28, r28 } */
1212 0x9b, 0xb6, 0x0d, 0x50,
1213 0x80, 0x73, 0x6a, 0x28, /* { add r27, r26, r27 ; jr r28 } */
1214 0x00, 0x30, 0x48, 0xd1,
1215 0xff, 0x57, 0x18, 0x18, /* { info 10 } */
1216 };
1217
1218 /* Reuse an existing info 10 bundle. */
1219 static const bfd_byte *const tilegx64_plt_tail_entry =
1220 &tilegx64_short_plt_entry[4 * TILEGX_BUNDLE_SIZE_IN_BYTES];
1221
1222 static const bfd_byte
1223 tilegx32_plt0_entry[PLT_HEADER_SIZE] =
1224 {
1225 0x00, 0x30, 0x48, 0x51,
1226 0x6e, 0x23, 0x58, 0x18, /* { ld4s_add r28, r27, 4 } */
1227 0x00, 0x30, 0xbc, 0x35,
1228 0x00, 0x40, 0xde, 0x9c, /* { ld4s r27, r27 } */
1229 0xff, 0xaf, 0x30, 0x40,
1230 0x60, 0x73, 0x6a, 0x28, /* { info 10 ; jr r27 } */
1231 };
1232
1233 static const bfd_byte
1234 tilegx32_long_plt_entry[PLT_ENTRY_SIZE] =
1235 {
1236 0xdc, 0x0f, 0x00, 0x10,
1237 0x0d, 0xf0, 0x6a, 0x28, /* { moveli r28, 0 ; lnk r26 } */
1238 0xdb, 0x0f, 0x00, 0x10,
1239 0x8e, 0x03, 0x00, 0x38, /* { moveli r27, 0 ; shl16insli r28, r28, 0 } */
1240 0x9c, 0xc6, 0x0d, 0xd0,
1241 0x6d, 0x03, 0x00, 0x38, /* { add r28, r26, r28 ; shl16insli r27, r27, 0 } */
1242 0x9b, 0xb6, 0xc5, 0xad,
1243 0xff, 0x57, 0xe0, 0x8c, /* { add r27, r26, r27 ; info 10 ; ld4s r28, r28 } */
1244 0xdd, 0x0f, 0x00, 0x70,
1245 0x80, 0x73, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; jr r28 } */
1246 };
1247
1248 static const bfd_byte
1249 tilegx32_short_plt_entry[PLT_ENTRY_SIZE] =
1250 {
1251 0x00, 0x30, 0x48, 0x51,
1252 0x0d, 0xf0, 0x6a, 0x28, /* { lnk r26 } */
1253 0x9c, 0x06, 0x00, 0x90,
1254 0xed, 0x07, 0x00, 0x00, /* { addli r28, r26, 0 ; moveli r27, 0 } */
1255 0xdd, 0x0f, 0x00, 0x70,
1256 0x8e, 0x9b, 0x6a, 0x28, /* { shl16insli r29, zero, 0 ; ld4s r28, r28 } */
1257 0x9b, 0xb6, 0x0d, 0x50,
1258 0x80, 0x73, 0x6a, 0x28, /* { add r27, r26, r27 ; jr r28 } */
1259 0x00, 0x30, 0x48, 0xd1,
1260 0xff, 0x57, 0x18, 0x18, /* { info 10 } */
1261 };
1262
1263 /* Reuse an existing info 10 bundle. */
1264 static const bfd_byte *const tilegx32_plt_tail_entry =
1265 &tilegx64_short_plt_entry[4 * TILEGX_BUNDLE_SIZE_IN_BYTES];
1266
1267 static int
1268 tilegx_plt_entry_build (bfd *output_bfd,
1269 struct tilegx_elf_link_hash_table *htab,
1270 asection *splt, asection *sgotplt,
1271 bfd_vma offset, bfd_vma *r_offset)
1272 {
1273 int plt_index = (offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE;
1274 int got_offset = (plt_index * GOT_ENTRY_SIZE (htab)
1275 + GOTPLT_HEADER_SIZE (htab));
1276 tilegx_bundle_bits *pc;
1277
1278 /* Compute the distance from the got entry to the lnk. */
1279 bfd_signed_vma dist_got_entry = sgotplt->output_section->vma
1280 + sgotplt->output_offset
1281 + got_offset
1282 - splt->output_section->vma
1283 - splt->output_offset
1284 - offset
1285 - TILEGX_BUNDLE_SIZE_IN_BYTES;
1286
1287 /* Compute the distance to GOTPLT[0]. */
1288 bfd_signed_vma dist_got0 = dist_got_entry - got_offset;
1289
1290 /* Check whether we can use the short plt entry with 16-bit offset. */
1291 bfd_boolean short_plt_entry =
1292 (dist_got_entry <= 0x7fff && dist_got0 >= -0x8000);
1293
1294 const tilegx_bundle_bits *plt_entry = (tilegx_bundle_bits *)
1295 (ABI_64_P (output_bfd) ?
1296 (short_plt_entry ? tilegx64_short_plt_entry : tilegx64_long_plt_entry) :
1297 (short_plt_entry ? tilegx32_short_plt_entry : tilegx32_long_plt_entry));
1298
1299 /* Copy the plt entry template. */
1300 memcpy (splt->contents + offset, plt_entry, PLT_ENTRY_SIZE);
1301
1302 /* Write the immediate offsets. */
1303 pc = (tilegx_bundle_bits *)(splt->contents + offset);
1304
1305 if (short_plt_entry)
1306 {
1307 /* { lnk r28 } */
1308 pc++;
1309
1310 /* { addli r28, r28, &GOTPLT[MY_GOT_INDEX] ; moveli r27, &GOTPLT[0] } */
1311 *pc++ |= create_Imm16_X0 (dist_got_entry)
1312 | create_Imm16_X1 (dist_got0);
1313
1314 /* { shl16insli r29, zero, MY_PLT_INDEX ; ld r28, r28 } */
1315 *pc++ |= create_Imm16_X0 (plt_index);
1316 }
1317 else
1318 {
1319 /* { moveli r28, &GOTPLT[MY_GOT_INDEX] ; lnk r26 } */
1320 *pc++ |= create_Imm16_X0 (dist_got_entry >> 16);
1321
1322 /* { moveli r27, &GOTPLT[0] ;
1323 shl16insli r28, r28, &GOTPLT[MY_GOT_INDEX] } */
1324 *pc++ |= create_Imm16_X0 (dist_got0 >> 16)
1325 | create_Imm16_X1 (dist_got_entry);
1326
1327 /* { add r28, r26, r28 ; shl16insli r27, r27, &GOTPLT[0] } */
1328 *pc++ |= create_Imm16_X1 (dist_got0);
1329
1330 /* { add r27, r26, r27 ; info 10 ; ld r28, r28 } */
1331 pc++;
1332
1333 /* { shl16insli r29, zero, MY_GOT_INDEX ; jr r28 } */
1334 *pc++ |= create_Imm16_X0 (plt_index);
1335 }
1336
1337 /* Set the relocation offset. */
1338 *r_offset = got_offset;
1339
1340 return plt_index;
1341 }
1342
1343 /* Create an entry in an TILEGX ELF linker hash table. */
1344
1345 static struct bfd_hash_entry *
1346 link_hash_newfunc (struct bfd_hash_entry *entry,
1347 struct bfd_hash_table *table, const char *string)
1348 {
1349 /* Allocate the structure if it has not already been allocated by a
1350 subclass. */
1351 if (entry == NULL)
1352 {
1353 entry =
1354 bfd_hash_allocate (table,
1355 sizeof (struct tilegx_elf_link_hash_entry));
1356 if (entry == NULL)
1357 return entry;
1358 }
1359
1360 /* Call the allocation method of the superclass. */
1361 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1362 if (entry != NULL)
1363 {
1364 struct tilegx_elf_link_hash_entry *eh;
1365
1366 eh = (struct tilegx_elf_link_hash_entry *) entry;
1367 eh->dyn_relocs = NULL;
1368 eh->tls_type = GOT_UNKNOWN;
1369 }
1370
1371 return entry;
1372 }
1373
1374 /* Create a TILEGX ELF linker hash table. */
1375
1376 struct bfd_link_hash_table *
1377 tilegx_elf_link_hash_table_create (bfd *abfd)
1378 {
1379 struct tilegx_elf_link_hash_table *ret;
1380 bfd_size_type amt = sizeof (struct tilegx_elf_link_hash_table);
1381
1382 ret = (struct tilegx_elf_link_hash_table *) bfd_zmalloc (amt);
1383 if (ret == NULL)
1384 return NULL;
1385
1386 #ifdef BFD64
1387 if (ABI_64_P (abfd))
1388 {
1389 ret->bytes_per_word = 8;
1390 ret->word_align_power = 3;
1391 ret->bytes_per_rela = sizeof (Elf64_External_Rela);
1392 ret->dtpoff_reloc = R_TILEGX_TLS_DTPOFF64;
1393 ret->dtpmod_reloc = R_TILEGX_TLS_DTPMOD64;
1394 ret->tpoff_reloc = R_TILEGX_TLS_TPOFF64;
1395 ret->r_info = tilegx_elf_r_info_64;
1396 ret->r_symndx = tilegx_elf_r_symndx_64;
1397 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER;
1398 ret->put_word = tilegx_put_word_64;
1399 }
1400 else
1401 #endif
1402 {
1403 ret->bytes_per_word = 4;
1404 ret->word_align_power = 2;
1405 ret->bytes_per_rela = sizeof (Elf32_External_Rela);
1406 ret->dtpoff_reloc = R_TILEGX_TLS_DTPOFF32;
1407 ret->dtpmod_reloc = R_TILEGX_TLS_DTPMOD32;
1408 ret->tpoff_reloc = R_TILEGX_TLS_TPOFF32;
1409 ret->r_info = tilegx_elf_r_info_32;
1410 ret->r_symndx = tilegx_elf_r_symndx_32;
1411 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER;
1412 ret->put_word = tilegx_put_word_32;
1413 }
1414
1415 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
1416 sizeof (struct tilegx_elf_link_hash_entry),
1417 TILEGX_ELF_DATA))
1418 {
1419 free (ret);
1420 return NULL;
1421 }
1422
1423 return &ret->elf.root;
1424 }
1425
1426 /* Create the .got section. */
1427
1428 static bfd_boolean
1429 tilegx_elf_create_got_section (bfd *abfd, struct bfd_link_info *info)
1430 {
1431 flagword flags;
1432 asection *s, *s_got;
1433 struct elf_link_hash_entry *h;
1434 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1435 struct elf_link_hash_table *htab = elf_hash_table (info);
1436
1437 /* This function may be called more than once. */
1438 if (htab->sgot != NULL)
1439 return TRUE;
1440
1441 flags = bed->dynamic_sec_flags;
1442
1443 s = bfd_make_section_anyway_with_flags (abfd,
1444 (bed->rela_plts_and_copies_p
1445 ? ".rela.got" : ".rel.got"),
1446 (bed->dynamic_sec_flags
1447 | SEC_READONLY));
1448 if (s == NULL
1449 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
1450 return FALSE;
1451 htab->srelgot = s;
1452
1453 s = s_got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
1454 if (s == NULL
1455 || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
1456 return FALSE;
1457 htab->sgot = s;
1458
1459 /* The first bit of the global offset table is the header. */
1460 s->size += bed->got_header_size;
1461
1462 if (bed->want_got_plt)
1463 {
1464 s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags);
1465 if (s == NULL
1466 || !bfd_set_section_alignment (abfd, s,
1467 bed->s->log_file_align))
1468 return FALSE;
1469 htab->sgotplt = s;
1470
1471 /* Reserve room for the header. */
1472 s->size += GOTPLT_HEADER_SIZE (tilegx_elf_hash_table (info));
1473 }
1474
1475 if (bed->want_got_sym)
1476 {
1477 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
1478 section. We don't do this in the linker script because we don't want
1479 to define the symbol if we are not creating a global offset
1480 table. */
1481 h = _bfd_elf_define_linkage_sym (abfd, info, s_got,
1482 "_GLOBAL_OFFSET_TABLE_");
1483 elf_hash_table (info)->hgot = h;
1484 if (h == NULL)
1485 return FALSE;
1486 }
1487
1488 return TRUE;
1489 }
1490
1491 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
1492 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
1493 hash table. */
1494
1495 bfd_boolean
1496 tilegx_elf_create_dynamic_sections (bfd *dynobj,
1497 struct bfd_link_info *info)
1498 {
1499 if (!tilegx_elf_create_got_section (dynobj, info))
1500 return FALSE;
1501
1502 return _bfd_elf_create_dynamic_sections (dynobj, info);
1503 }
1504
1505 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1506
1507 void
1508 tilegx_elf_copy_indirect_symbol (struct bfd_link_info *info,
1509 struct elf_link_hash_entry *dir,
1510 struct elf_link_hash_entry *ind)
1511 {
1512 struct tilegx_elf_link_hash_entry *edir, *eind;
1513
1514 edir = (struct tilegx_elf_link_hash_entry *) dir;
1515 eind = (struct tilegx_elf_link_hash_entry *) ind;
1516
1517 if (eind->dyn_relocs != NULL)
1518 {
1519 if (edir->dyn_relocs != NULL)
1520 {
1521 struct tilegx_elf_dyn_relocs **pp;
1522 struct tilegx_elf_dyn_relocs *p;
1523
1524 /* Add reloc counts against the indirect sym to the direct sym
1525 list. Merge any entries against the same section. */
1526 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1527 {
1528 struct tilegx_elf_dyn_relocs *q;
1529
1530 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1531 if (q->sec == p->sec)
1532 {
1533 q->pc_count += p->pc_count;
1534 q->count += p->count;
1535 *pp = p->next;
1536 break;
1537 }
1538 if (q == NULL)
1539 pp = &p->next;
1540 }
1541 *pp = edir->dyn_relocs;
1542 }
1543
1544 edir->dyn_relocs = eind->dyn_relocs;
1545 eind->dyn_relocs = NULL;
1546 }
1547
1548 if (ind->root.type == bfd_link_hash_indirect
1549 && dir->got.refcount <= 0)
1550 {
1551 edir->tls_type = eind->tls_type;
1552 eind->tls_type = GOT_UNKNOWN;
1553 }
1554 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1555 }
1556
1557 static int
1558 tilegx_tls_translate_to_le (int r_type)
1559 {
1560 switch (r_type)
1561 {
1562 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
1563 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
1564 return R_TILEGX_IMM16_X0_HW0_TLS_LE;
1565
1566 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
1567 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
1568 return R_TILEGX_IMM16_X1_HW0_TLS_LE;
1569
1570 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
1571 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
1572 return R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE;
1573
1574 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
1575 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
1576 return R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE;
1577
1578 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
1579 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
1580 return R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE;
1581
1582 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
1583 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
1584 return R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE;
1585 }
1586 return r_type;
1587 }
1588
1589 static int
1590 tilegx_tls_translate_to_ie (int r_type)
1591 {
1592 switch (r_type)
1593 {
1594 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
1595 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
1596 return R_TILEGX_IMM16_X0_HW0_TLS_IE;
1597
1598 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
1599 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
1600 return R_TILEGX_IMM16_X1_HW0_TLS_IE;
1601
1602 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
1603 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
1604 return R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE;
1605
1606 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
1607 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
1608 return R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE;
1609
1610 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
1611 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
1612 return R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE;
1613
1614 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
1615 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
1616 return R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE;
1617 }
1618 return r_type;
1619 }
1620
1621 static int
1622 tilegx_elf_tls_transition (struct bfd_link_info *info, int r_type,
1623 int is_local, bfd_boolean disable_le_transition)
1624 {
1625 if (bfd_link_pic (info))
1626 return r_type;
1627
1628 if (is_local && !disable_le_transition)
1629 return tilegx_tls_translate_to_le (r_type);
1630 else
1631 return tilegx_tls_translate_to_ie (r_type);
1632 }
1633
1634 /* Look through the relocs for a section during the first phase, and
1635 allocate space in the global offset table or procedure linkage
1636 table. */
1637
1638 bfd_boolean
1639 tilegx_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
1640 asection *sec, const Elf_Internal_Rela *relocs)
1641 {
1642 struct tilegx_elf_link_hash_table *htab;
1643 Elf_Internal_Shdr *symtab_hdr;
1644 struct elf_link_hash_entry **sym_hashes;
1645 const Elf_Internal_Rela *rel;
1646 const Elf_Internal_Rela *rel_end;
1647 asection *sreloc;
1648 int num_relocs;
1649 bfd_boolean has_tls_gd_or_ie = FALSE, has_tls_add = FALSE;
1650
1651 if (bfd_link_relocatable (info))
1652 return TRUE;
1653
1654 htab = tilegx_elf_hash_table (info);
1655 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1656 sym_hashes = elf_sym_hashes (abfd);
1657
1658 sreloc = NULL;
1659
1660 num_relocs = sec->reloc_count;
1661
1662 BFD_ASSERT (is_tilegx_elf (abfd) || num_relocs == 0);
1663
1664 if (htab->elf.dynobj == NULL)
1665 htab->elf.dynobj = abfd;
1666
1667 rel_end = relocs + num_relocs;
1668
1669 /* Check whether to do optimization to transform TLS GD/IE
1670 referehces to TLS LE. We disable it if we're linking with old
1671 TLS code sequences that do not support such optimization. Old
1672 TLS code sequences have tls_gd_call/tls_ie_load relocations but
1673 no tls_add relocations. */
1674 for (rel = relocs; rel < rel_end && !has_tls_add; rel++)
1675 {
1676 int r_type = TILEGX_ELF_R_TYPE (rel->r_info);
1677 switch (r_type)
1678 {
1679 case R_TILEGX_TLS_GD_CALL:
1680 case R_TILEGX_TLS_IE_LOAD:
1681 has_tls_gd_or_ie = TRUE;
1682 break;
1683 case R_TILEGX_IMM8_X0_TLS_ADD:
1684 case R_TILEGX_IMM8_Y0_TLS_ADD:
1685 case R_TILEGX_IMM8_X1_TLS_ADD:
1686 case R_TILEGX_IMM8_Y1_TLS_ADD:
1687 has_tls_add = TRUE;
1688 break;
1689 }
1690 }
1691
1692 sec->sec_flg0 = (has_tls_gd_or_ie && !has_tls_add);
1693 htab->disable_le_transition |= sec->sec_flg0;
1694
1695 for (rel = relocs; rel < rel_end; rel++)
1696 {
1697 unsigned int r_type;
1698 unsigned int r_symndx;
1699 struct elf_link_hash_entry *h;
1700 int tls_type;
1701
1702 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info);
1703 r_type = TILEGX_ELF_R_TYPE (rel->r_info);
1704
1705 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1706 {
1707 /* xgettext:c-format */
1708 _bfd_error_handler (_("%B: bad symbol index: %d"),
1709 abfd, r_symndx);
1710 return FALSE;
1711 }
1712
1713 if (r_symndx < symtab_hdr->sh_info)
1714 h = NULL;
1715 else
1716 {
1717 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1718 while (h->root.type == bfd_link_hash_indirect
1719 || h->root.type == bfd_link_hash_warning)
1720 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1721
1722 /* PR15323, ref flags aren't set for references in the same
1723 object. */
1724 h->root.non_ir_ref_regular = 1;
1725 }
1726
1727 r_type = tilegx_elf_tls_transition (info, r_type, h == NULL,
1728 sec->sec_flg0);
1729 switch (r_type)
1730 {
1731 case R_TILEGX_IMM16_X0_HW0_TLS_LE:
1732 case R_TILEGX_IMM16_X1_HW0_TLS_LE:
1733 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE:
1734 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE:
1735 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE:
1736 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE:
1737 if (bfd_link_pic (info))
1738 goto r_tilegx_plt32;
1739 break;
1740
1741 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
1742 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
1743 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
1744 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
1745 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
1746 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
1747 BFD_ASSERT (bfd_link_pic (info));
1748 tls_type = GOT_TLS_GD;
1749 goto have_got_reference;
1750
1751 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
1752 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
1753 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
1754 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
1755 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
1756 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
1757 tls_type = GOT_TLS_IE;
1758 if (bfd_link_pic (info))
1759 info->flags |= DF_STATIC_TLS;
1760 goto have_got_reference;
1761
1762 case R_TILEGX_IMM16_X0_HW0_GOT:
1763 case R_TILEGX_IMM16_X1_HW0_GOT:
1764 case R_TILEGX_IMM16_X0_HW0_LAST_GOT:
1765 case R_TILEGX_IMM16_X1_HW0_LAST_GOT:
1766 case R_TILEGX_IMM16_X0_HW1_LAST_GOT:
1767 case R_TILEGX_IMM16_X1_HW1_LAST_GOT:
1768 tls_type = GOT_NORMAL;
1769 /* Fall Through */
1770
1771 have_got_reference:
1772 /* This symbol requires a global offset table entry. */
1773 {
1774 int old_tls_type;
1775
1776 if (h != NULL)
1777 {
1778 h->got.refcount += 1;
1779 old_tls_type = tilegx_elf_hash_entry(h)->tls_type;
1780 }
1781 else
1782 {
1783 bfd_signed_vma *local_got_refcounts;
1784
1785 /* This is a global offset table entry for a local symbol. */
1786 local_got_refcounts = elf_local_got_refcounts (abfd);
1787 if (local_got_refcounts == NULL)
1788 {
1789 bfd_size_type size;
1790
1791 size = symtab_hdr->sh_info;
1792 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1793 local_got_refcounts = ((bfd_signed_vma *)
1794 bfd_zalloc (abfd, size));
1795 if (local_got_refcounts == NULL)
1796 return FALSE;
1797 elf_local_got_refcounts (abfd) = local_got_refcounts;
1798 _bfd_tilegx_elf_local_got_tls_type (abfd)
1799 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1800 }
1801 local_got_refcounts[r_symndx] += 1;
1802 old_tls_type = _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx];
1803 }
1804
1805 /* If a TLS symbol is accessed using IE at least once,
1806 there is no point to use dynamic model for it. */
1807 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1808 && (old_tls_type != GOT_TLS_GD
1809 || tls_type != GOT_TLS_IE))
1810 {
1811 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
1812 tls_type = old_tls_type;
1813 else
1814 {
1815 _bfd_error_handler
1816 /* xgettext:c-format */
1817 (_("%B: `%s' accessed both as normal and thread local symbol"),
1818 abfd, h ? h->root.root.string : "<local>");
1819 return FALSE;
1820 }
1821 }
1822
1823 if (old_tls_type != tls_type)
1824 {
1825 if (h != NULL)
1826 tilegx_elf_hash_entry (h)->tls_type = tls_type;
1827 else
1828 _bfd_tilegx_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
1829 }
1830 }
1831
1832 if (htab->elf.sgot == NULL)
1833 {
1834 if (!tilegx_elf_create_got_section (htab->elf.dynobj, info))
1835 return FALSE;
1836 }
1837 break;
1838
1839 case R_TILEGX_TLS_GD_CALL:
1840 if (bfd_link_pic (info))
1841 {
1842 /* These are basically R_TILEGX_JUMPOFF_X1_PLT relocs
1843 against __tls_get_addr. */
1844 struct bfd_link_hash_entry *bh = NULL;
1845 if (! _bfd_generic_link_add_one_symbol (info, abfd,
1846 "__tls_get_addr", 0,
1847 bfd_und_section_ptr, 0,
1848 NULL, FALSE, FALSE,
1849 &bh))
1850 return FALSE;
1851 h = (struct elf_link_hash_entry *) bh;
1852 }
1853 else
1854 break;
1855 /* Fall through */
1856
1857 case R_TILEGX_JUMPOFF_X1_PLT:
1858 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL:
1859 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL:
1860 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL:
1861 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL:
1862 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL:
1863 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL:
1864 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL:
1865 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL:
1866 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL:
1867 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL:
1868 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL:
1869 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL:
1870 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL:
1871 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL:
1872 /* This symbol requires a procedure linkage table entry. We
1873 actually build the entry in adjust_dynamic_symbol,
1874 because this might be a case of linking PIC code without
1875 linking in any dynamic objects, in which case we don't
1876 need to generate a procedure linkage table after all. */
1877
1878 if (h != NULL)
1879 {
1880 h->needs_plt = 1;
1881 h->plt.refcount += 1;
1882 }
1883 break;
1884
1885 case R_TILEGX_64_PCREL:
1886 case R_TILEGX_32_PCREL:
1887 case R_TILEGX_16_PCREL:
1888 case R_TILEGX_8_PCREL:
1889 case R_TILEGX_IMM16_X0_HW0_PCREL:
1890 case R_TILEGX_IMM16_X1_HW0_PCREL:
1891 case R_TILEGX_IMM16_X0_HW1_PCREL:
1892 case R_TILEGX_IMM16_X1_HW1_PCREL:
1893 case R_TILEGX_IMM16_X0_HW2_PCREL:
1894 case R_TILEGX_IMM16_X1_HW2_PCREL:
1895 case R_TILEGX_IMM16_X0_HW3_PCREL:
1896 case R_TILEGX_IMM16_X1_HW3_PCREL:
1897 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL:
1898 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL:
1899 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL:
1900 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL:
1901 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL:
1902 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL:
1903 if (h != NULL)
1904 h->non_got_ref = 1;
1905
1906 if (h != NULL
1907 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1908 break;
1909 /* Fall through. */
1910
1911 case R_TILEGX_64:
1912 case R_TILEGX_32:
1913 case R_TILEGX_16:
1914 case R_TILEGX_8:
1915 case R_TILEGX_HW0:
1916 case R_TILEGX_HW1:
1917 case R_TILEGX_HW2:
1918 case R_TILEGX_HW3:
1919 case R_TILEGX_HW0_LAST:
1920 case R_TILEGX_HW1_LAST:
1921 case R_TILEGX_HW2_LAST:
1922 case R_TILEGX_COPY:
1923 case R_TILEGX_GLOB_DAT:
1924 case R_TILEGX_JMP_SLOT:
1925 case R_TILEGX_RELATIVE:
1926 case R_TILEGX_BROFF_X1:
1927 case R_TILEGX_JUMPOFF_X1:
1928 case R_TILEGX_IMM8_X0:
1929 case R_TILEGX_IMM8_Y0:
1930 case R_TILEGX_IMM8_X1:
1931 case R_TILEGX_IMM8_Y1:
1932 case R_TILEGX_DEST_IMM8_X1:
1933 case R_TILEGX_MT_IMM14_X1:
1934 case R_TILEGX_MF_IMM14_X1:
1935 case R_TILEGX_MMSTART_X0:
1936 case R_TILEGX_MMEND_X0:
1937 case R_TILEGX_SHAMT_X0:
1938 case R_TILEGX_SHAMT_X1:
1939 case R_TILEGX_SHAMT_Y0:
1940 case R_TILEGX_SHAMT_Y1:
1941 case R_TILEGX_IMM16_X0_HW0:
1942 case R_TILEGX_IMM16_X1_HW0:
1943 case R_TILEGX_IMM16_X0_HW1:
1944 case R_TILEGX_IMM16_X1_HW1:
1945 case R_TILEGX_IMM16_X0_HW2:
1946 case R_TILEGX_IMM16_X1_HW2:
1947 case R_TILEGX_IMM16_X0_HW3:
1948 case R_TILEGX_IMM16_X1_HW3:
1949 case R_TILEGX_IMM16_X0_HW0_LAST:
1950 case R_TILEGX_IMM16_X1_HW0_LAST:
1951 case R_TILEGX_IMM16_X0_HW1_LAST:
1952 case R_TILEGX_IMM16_X1_HW1_LAST:
1953 case R_TILEGX_IMM16_X0_HW2_LAST:
1954 case R_TILEGX_IMM16_X1_HW2_LAST:
1955 if (h != NULL)
1956 h->non_got_ref = 1;
1957
1958 r_tilegx_plt32:
1959 if (h != NULL && !bfd_link_pic (info))
1960 {
1961 /* We may need a .plt entry if the function this reloc
1962 refers to is in a shared lib. */
1963 h->plt.refcount += 1;
1964 }
1965
1966 /* If we are creating a shared library, and this is a reloc
1967 against a global symbol, or a non PC relative reloc
1968 against a local symbol, then we need to copy the reloc
1969 into the shared library. However, if we are linking with
1970 -Bsymbolic, we do not need to copy a reloc against a
1971 global symbol which is defined in an object we are
1972 including in the link (i.e., DEF_REGULAR is set). At
1973 this point we have not seen all the input files, so it is
1974 possible that DEF_REGULAR is not set now but will be set
1975 later (it is never cleared). In case of a weak definition,
1976 DEF_REGULAR may be cleared later by a strong definition in
1977 a shared library. We account for that possibility below by
1978 storing information in the relocs_copied field of the hash
1979 table entry. A similar situation occurs when creating
1980 shared libraries and symbol visibility changes render the
1981 symbol local.
1982
1983 If on the other hand, we are creating an executable, we
1984 may need to keep relocations for symbols satisfied by a
1985 dynamic library if we manage to avoid copy relocs for the
1986 symbol. */
1987 if ((bfd_link_pic (info)
1988 && (sec->flags & SEC_ALLOC) != 0
1989 && (! tilegx_elf_howto_table[r_type].pc_relative
1990 || (h != NULL
1991 && (! info->symbolic
1992 || h->root.type == bfd_link_hash_defweak
1993 || !h->def_regular))))
1994 || (!bfd_link_pic (info)
1995 && (sec->flags & SEC_ALLOC) != 0
1996 && h != NULL
1997 && (h->root.type == bfd_link_hash_defweak
1998 || !h->def_regular)))
1999 {
2000 struct tilegx_elf_dyn_relocs *p;
2001 struct tilegx_elf_dyn_relocs **head;
2002
2003 /* When creating a shared object, we must copy these
2004 relocs into the output file. We create a reloc
2005 section in dynobj and make room for the reloc. */
2006 if (sreloc == NULL)
2007 {
2008 sreloc = _bfd_elf_make_dynamic_reloc_section
2009 (sec, htab->elf.dynobj, htab->word_align_power, abfd,
2010 /*rela?*/ TRUE);
2011
2012 if (sreloc == NULL)
2013 return FALSE;
2014 }
2015
2016 /* If this is a global symbol, we count the number of
2017 relocations we need for this symbol. */
2018 if (h != NULL)
2019 head =
2020 &((struct tilegx_elf_link_hash_entry *) h)->dyn_relocs;
2021 else
2022 {
2023 /* Track dynamic relocs needed for local syms too.
2024 We really need local syms available to do this
2025 easily. Oh well. */
2026
2027 asection *s;
2028 void *vpp;
2029 Elf_Internal_Sym *isym;
2030
2031 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2032 abfd, r_symndx);
2033 if (isym == NULL)
2034 return FALSE;
2035
2036 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
2037 if (s == NULL)
2038 s = sec;
2039
2040 vpp = &elf_section_data (s)->local_dynrel;
2041 head = (struct tilegx_elf_dyn_relocs **) vpp;
2042 }
2043
2044 p = *head;
2045 if (p == NULL || p->sec != sec)
2046 {
2047 bfd_size_type amt = sizeof *p;
2048 p = ((struct tilegx_elf_dyn_relocs *)
2049 bfd_alloc (htab->elf.dynobj, amt));
2050 if (p == NULL)
2051 return FALSE;
2052 p->next = *head;
2053 *head = p;
2054 p->sec = sec;
2055 p->count = 0;
2056 p->pc_count = 0;
2057 }
2058
2059 p->count += 1;
2060 if (tilegx_elf_howto_table[r_type].pc_relative)
2061 p->pc_count += 1;
2062 }
2063
2064 break;
2065
2066 case R_TILEGX_GNU_VTINHERIT:
2067 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2068 return FALSE;
2069 break;
2070
2071 case R_TILEGX_GNU_VTENTRY:
2072 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2073 return FALSE;
2074 break;
2075
2076 default:
2077 break;
2078 }
2079 }
2080
2081 return TRUE;
2082 }
2083
2084 \f
2085 asection *
2086 tilegx_elf_gc_mark_hook (asection *sec,
2087 struct bfd_link_info *info,
2088 Elf_Internal_Rela *rel,
2089 struct elf_link_hash_entry *h,
2090 Elf_Internal_Sym *sym)
2091 {
2092 if (h != NULL)
2093 {
2094 switch (TILEGX_ELF_R_TYPE (rel->r_info))
2095 {
2096 case R_TILEGX_GNU_VTINHERIT:
2097 case R_TILEGX_GNU_VTENTRY:
2098 return NULL;
2099 }
2100 }
2101
2102 /* FIXME: The test here, in check_relocs and in relocate_section
2103 dealing with TLS optimization, ought to be !bfd_link_executable (info). */
2104 if (bfd_link_pic (info))
2105 {
2106 switch (TILEGX_ELF_R_TYPE (rel->r_info))
2107 {
2108 case R_TILEGX_TLS_GD_CALL:
2109 /* This reloc implicitly references __tls_get_addr. We know
2110 another reloc will reference the same symbol as the one
2111 on this reloc, so the real symbol and section will be
2112 gc marked when processing the other reloc. That lets
2113 us handle __tls_get_addr here. */
2114 h = elf_link_hash_lookup (elf_hash_table (info), "__tls_get_addr",
2115 FALSE, FALSE, TRUE);
2116 BFD_ASSERT (h != NULL);
2117 h->mark = 1;
2118 if (h->u.weakdef != NULL)
2119 h->u.weakdef->mark = 1;
2120 sym = NULL;
2121 }
2122 }
2123
2124 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2125 }
2126
2127 /* Adjust a symbol defined by a dynamic object and referenced by a
2128 regular object. The current definition is in some section of the
2129 dynamic object, but we're not including those sections. We have to
2130 change the definition to something the rest of the link can
2131 understand. */
2132
2133 bfd_boolean
2134 tilegx_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2135 struct elf_link_hash_entry *h)
2136 {
2137 struct tilegx_elf_link_hash_table *htab;
2138 struct tilegx_elf_link_hash_entry * eh;
2139 struct tilegx_elf_dyn_relocs *p;
2140 bfd *dynobj;
2141 asection *s, *srel;
2142
2143 htab = tilegx_elf_hash_table (info);
2144 BFD_ASSERT (htab != NULL);
2145
2146 dynobj = htab->elf.dynobj;
2147
2148 /* Make sure we know what is going on here. */
2149 BFD_ASSERT (dynobj != NULL
2150 && (h->needs_plt
2151 || h->u.weakdef != NULL
2152 || (h->def_dynamic
2153 && h->ref_regular
2154 && !h->def_regular)));
2155
2156 /* If this is a function, put it in the procedure linkage table. We
2157 will fill in the contents of the procedure linkage table later
2158 (although we could actually do it here). */
2159 if (h->type == STT_FUNC || h->needs_plt)
2160 {
2161 if (h->plt.refcount <= 0
2162 || SYMBOL_CALLS_LOCAL (info, h)
2163 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2164 && h->root.type == bfd_link_hash_undefweak))
2165 {
2166 /* This case can occur if we saw a R_TILEGX_JUMPOFF_X1_PLT
2167 reloc in an input file, but the symbol was never referred
2168 to by a dynamic object, or if all references were garbage
2169 collected. In such a case, we don't actually need to build
2170 a procedure linkage table, and we can just do a
2171 R_TILEGX_JUMPOFF_X1 relocation instead. */
2172 h->plt.offset = (bfd_vma) -1;
2173 h->needs_plt = 0;
2174 }
2175
2176 return TRUE;
2177 }
2178 else
2179 h->plt.offset = (bfd_vma) -1;
2180
2181 /* If this is a weak symbol, and there is a real definition, the
2182 processor independent code will have arranged for us to see the
2183 real definition first, and we can just use the same value. */
2184 if (h->u.weakdef != NULL)
2185 {
2186 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2187 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2188 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2189 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2190 return TRUE;
2191 }
2192
2193 /* This is a reference to a symbol defined by a dynamic object which
2194 is not a function. */
2195
2196 /* If we are creating a shared library, we must presume that the
2197 only references to the symbol are via the global offset table.
2198 For such cases we need not do anything here; the relocations will
2199 be handled correctly by relocate_section. */
2200 if (bfd_link_pic (info))
2201 return TRUE;
2202
2203 /* If there are no references to this symbol that do not use the
2204 GOT, we don't need to generate a copy reloc. */
2205 if (!h->non_got_ref)
2206 return TRUE;
2207
2208 /* If -z nocopyreloc was given, we won't generate them either. */
2209 if (info->nocopyreloc)
2210 {
2211 h->non_got_ref = 0;
2212 return TRUE;
2213 }
2214
2215 eh = (struct tilegx_elf_link_hash_entry *) h;
2216 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2217 {
2218 s = p->sec->output_section;
2219 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2220 break;
2221 }
2222
2223 /* If we didn't find any dynamic relocs in read-only sections, then
2224 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2225 if (p == NULL)
2226 {
2227 h->non_got_ref = 0;
2228 return TRUE;
2229 }
2230
2231 /* We must allocate the symbol in our .dynbss section, which will
2232 become part of the .bss section of the executable. There will be
2233 an entry for this symbol in the .dynsym section. The dynamic
2234 object will contain position independent code, so all references
2235 from the dynamic object to this symbol will go through the global
2236 offset table. The dynamic linker will use the .dynsym entry to
2237 determine the address it must put in the global offset table, so
2238 both the dynamic object and the regular object will refer to the
2239 same memory location for the variable. */
2240
2241 /* We must generate a R_TILEGX_COPY reloc to tell the dynamic linker
2242 to copy the initial value out of the dynamic object and into the
2243 runtime process image. We need to remember the offset into the
2244 .rel.bss section we are going to use. */
2245 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
2246 {
2247 s = htab->elf.sdynrelro;
2248 srel = htab->elf.sreldynrelro;
2249 }
2250 else
2251 {
2252 s = htab->elf.sdynbss;
2253 srel = htab->elf.srelbss;
2254 }
2255 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2256 {
2257 srel->size += TILEGX_ELF_RELA_BYTES (htab);
2258 h->needs_copy = 1;
2259 }
2260
2261 return _bfd_elf_adjust_dynamic_copy (info, h, s);
2262 }
2263
2264 /* Allocate space in .plt, .got and associated reloc sections for
2265 dynamic relocs. */
2266
2267 static bfd_boolean
2268 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2269 {
2270 struct bfd_link_info *info;
2271 struct tilegx_elf_link_hash_table *htab;
2272 struct tilegx_elf_link_hash_entry *eh;
2273 struct tilegx_elf_dyn_relocs *p;
2274
2275 if (h->root.type == bfd_link_hash_indirect)
2276 return TRUE;
2277
2278 info = (struct bfd_link_info *) inf;
2279 htab = tilegx_elf_hash_table (info);
2280 BFD_ASSERT (htab != NULL);
2281
2282 if (htab->elf.dynamic_sections_created
2283 && h->plt.refcount > 0)
2284 {
2285 /* Make sure this symbol is output as a dynamic symbol.
2286 Undefined weak syms won't yet be marked as dynamic. */
2287 if (h->dynindx == -1
2288 && !h->forced_local)
2289 {
2290 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2291 return FALSE;
2292 }
2293
2294 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
2295 {
2296 asection *s = htab->elf.splt;
2297
2298 /* Allocate room for the header and tail. */
2299 if (s->size == 0)
2300 {
2301 s->size = PLT_ENTRY_SIZE;
2302 }
2303
2304 h->plt.offset = s->size - PLT_ENTRY_SIZE + PLT_HEADER_SIZE;
2305
2306 /* If this symbol is not defined in a regular file, and we are
2307 not generating a shared library, then set the symbol to this
2308 location in the .plt. This is required to make function
2309 pointers compare as equal between the normal executable and
2310 the shared library. */
2311 if (! bfd_link_pic (info)
2312 && !h->def_regular)
2313 {
2314 h->root.u.def.section = s;
2315 h->root.u.def.value = h->plt.offset;
2316 }
2317
2318 /* Make room for this entry. */
2319 s->size += PLT_ENTRY_SIZE;
2320
2321 /* We also need to make an entry in the .got.plt section. */
2322 htab->elf.sgotplt->size += GOT_ENTRY_SIZE (htab);
2323
2324 /* We also need to make an entry in the .rela.plt section. */
2325 htab->elf.srelplt->size += TILEGX_ELF_RELA_BYTES (htab);
2326 }
2327 else
2328 {
2329 h->plt.offset = (bfd_vma) -1;
2330 h->needs_plt = 0;
2331 }
2332 }
2333 else
2334 {
2335 h->plt.offset = (bfd_vma) -1;
2336 h->needs_plt = 0;
2337 }
2338
2339 /* If a TLS_IE symbol is now local to the binary, make it a TLS_LE
2340 requiring no TLS entry. */
2341 if (h->got.refcount > 0
2342 && !htab->disable_le_transition
2343 && !bfd_link_pic (info)
2344 && h->dynindx == -1
2345 && tilegx_elf_hash_entry(h)->tls_type == GOT_TLS_IE)
2346 h->got.offset = (bfd_vma) -1;
2347 else if (h->got.refcount > 0)
2348 {
2349 asection *s;
2350 bfd_boolean dyn;
2351 int tls_type = tilegx_elf_hash_entry(h)->tls_type;
2352
2353 /* Make sure this symbol is output as a dynamic symbol.
2354 Undefined weak syms won't yet be marked as dynamic. */
2355 if (h->dynindx == -1
2356 && !h->forced_local)
2357 {
2358 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2359 return FALSE;
2360 }
2361
2362 s = htab->elf.sgot;
2363 h->got.offset = s->size;
2364 s->size += TILEGX_ELF_WORD_BYTES (htab);
2365 /* TLS_GD entries need 2 consecutive GOT slots. */
2366 if (tls_type == GOT_TLS_GD)
2367 s->size += TILEGX_ELF_WORD_BYTES (htab);
2368 dyn = htab->elf.dynamic_sections_created;
2369 /* TLS_IE needs one dynamic relocation,
2370 TLS_GD needs two if local symbol and two if global. */
2371 if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE)
2372 htab->elf.srelgot->size += 2 * TILEGX_ELF_RELA_BYTES (htab);
2373 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2374 bfd_link_pic (info),
2375 h))
2376 htab->elf.srelgot->size += TILEGX_ELF_RELA_BYTES (htab);
2377 }
2378 else
2379 h->got.offset = (bfd_vma) -1;
2380
2381 eh = (struct tilegx_elf_link_hash_entry *) h;
2382 if (eh->dyn_relocs == NULL)
2383 return TRUE;
2384
2385 /* In the shared -Bsymbolic case, discard space allocated for
2386 dynamic pc-relative relocs against symbols which turn out to be
2387 defined in regular objects. For the normal shared case, discard
2388 space for pc-relative relocs that have become local due to symbol
2389 visibility changes. */
2390
2391 if (bfd_link_pic (info))
2392 {
2393 if (SYMBOL_CALLS_LOCAL (info, h))
2394 {
2395 struct tilegx_elf_dyn_relocs **pp;
2396
2397 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2398 {
2399 p->count -= p->pc_count;
2400 p->pc_count = 0;
2401 if (p->count == 0)
2402 *pp = p->next;
2403 else
2404 pp = &p->next;
2405 }
2406 }
2407
2408 /* Also discard relocs on undefined weak syms with non-default
2409 visibility. */
2410 if (eh->dyn_relocs != NULL
2411 && h->root.type == bfd_link_hash_undefweak)
2412 {
2413 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2414 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
2415 eh->dyn_relocs = NULL;
2416
2417 /* Make sure undefined weak symbols are output as a dynamic
2418 symbol in PIEs. */
2419 else if (h->dynindx == -1
2420 && !h->forced_local)
2421 {
2422 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2423 return FALSE;
2424 }
2425 }
2426 }
2427 else
2428 {
2429 /* For the non-shared case, discard space for relocs against
2430 symbols which turn out to need copy relocs or are not
2431 dynamic. */
2432
2433 if (!h->non_got_ref
2434 && ((h->def_dynamic
2435 && !h->def_regular)
2436 || (htab->elf.dynamic_sections_created
2437 && (h->root.type == bfd_link_hash_undefweak
2438 || h->root.type == bfd_link_hash_undefined))))
2439 {
2440 /* Make sure this symbol is output as a dynamic symbol.
2441 Undefined weak syms won't yet be marked as dynamic. */
2442 if (h->dynindx == -1
2443 && !h->forced_local)
2444 {
2445 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2446 return FALSE;
2447 }
2448
2449 /* If that succeeded, we know we'll be keeping all the
2450 relocs. */
2451 if (h->dynindx != -1)
2452 goto keep;
2453 }
2454
2455 eh->dyn_relocs = NULL;
2456
2457 keep: ;
2458 }
2459
2460 /* Finally, allocate space. */
2461 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2462 {
2463 asection *sreloc = elf_section_data (p->sec)->sreloc;
2464 sreloc->size += p->count * TILEGX_ELF_RELA_BYTES (htab);
2465 }
2466
2467 return TRUE;
2468 }
2469
2470 /* Find any dynamic relocs that apply to read-only sections. */
2471
2472 static bfd_boolean
2473 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2474 {
2475 struct tilegx_elf_link_hash_entry *eh;
2476 struct tilegx_elf_dyn_relocs *p;
2477
2478 eh = (struct tilegx_elf_link_hash_entry *) h;
2479 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2480 {
2481 asection *s = p->sec->output_section;
2482
2483 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2484 {
2485 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2486
2487 info->flags |= DF_TEXTREL;
2488
2489 info->callbacks->minfo (_("%B: dynamic relocation in read-only section `%A'\n"),
2490 p->sec->owner, p->sec);
2491
2492 /* Not an error, just cut short the traversal. */
2493 return FALSE;
2494 }
2495 }
2496 return TRUE;
2497 }
2498
2499 /* Return true if the dynamic symbol for a given section should be
2500 omitted when creating a shared library. */
2501
2502 bfd_boolean
2503 tilegx_elf_omit_section_dynsym (bfd *output_bfd,
2504 struct bfd_link_info *info,
2505 asection *p)
2506 {
2507 /* We keep the .got section symbol so that explicit relocations
2508 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode
2509 can be turned into relocations against the .got symbol. */
2510 if (strcmp (p->name, ".got") == 0)
2511 return FALSE;
2512
2513 return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p);
2514 }
2515
2516 bfd_boolean
2517 tilegx_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2518 struct bfd_link_info *info)
2519 {
2520 struct tilegx_elf_link_hash_table *htab;
2521 bfd *dynobj;
2522 asection *s;
2523 bfd *ibfd;
2524
2525 htab = tilegx_elf_hash_table (info);
2526 BFD_ASSERT (htab != NULL);
2527 dynobj = htab->elf.dynobj;
2528 BFD_ASSERT (dynobj != NULL);
2529
2530 if (elf_hash_table (info)->dynamic_sections_created)
2531 {
2532 /* Set the contents of the .interp section to the interpreter. */
2533 if (bfd_link_executable (info) && !info->nointerp)
2534 {
2535 s = bfd_get_linker_section (dynobj, ".interp");
2536 BFD_ASSERT (s != NULL);
2537 s->size = strlen (htab->dynamic_interpreter) + 1;
2538 s->contents = (unsigned char *) htab->dynamic_interpreter;
2539 }
2540 }
2541
2542 /* Set up .got offsets for local syms, and space for local dynamic
2543 relocs. */
2544 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2545 {
2546 bfd_signed_vma *local_got;
2547 bfd_signed_vma *end_local_got;
2548 char *local_tls_type;
2549 bfd_size_type locsymcount;
2550 Elf_Internal_Shdr *symtab_hdr;
2551 asection *srel;
2552
2553 if (! is_tilegx_elf (ibfd))
2554 continue;
2555
2556 for (s = ibfd->sections; s != NULL; s = s->next)
2557 {
2558 struct tilegx_elf_dyn_relocs *p;
2559
2560 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2561 {
2562 if (!bfd_is_abs_section (p->sec)
2563 && bfd_is_abs_section (p->sec->output_section))
2564 {
2565 /* Input section has been discarded, either because
2566 it is a copy of a linkonce section or due to
2567 linker script /DISCARD/, so we'll be discarding
2568 the relocs too. */
2569 }
2570 else if (p->count != 0)
2571 {
2572 srel = elf_section_data (p->sec)->sreloc;
2573 srel->size += p->count * TILEGX_ELF_RELA_BYTES (htab);
2574 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2575 {
2576 info->flags |= DF_TEXTREL;
2577
2578 info->callbacks->minfo (_("%B: dynamic relocation in read-only section `%A'\n"),
2579 p->sec->owner, p->sec);
2580 }
2581 }
2582 }
2583 }
2584
2585 local_got = elf_local_got_refcounts (ibfd);
2586 if (!local_got)
2587 continue;
2588
2589 symtab_hdr = &elf_symtab_hdr (ibfd);
2590 locsymcount = symtab_hdr->sh_info;
2591 end_local_got = local_got + locsymcount;
2592 local_tls_type = _bfd_tilegx_elf_local_got_tls_type (ibfd);
2593 s = htab->elf.sgot;
2594 srel = htab->elf.srelgot;
2595 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2596 {
2597 if (*local_got > 0)
2598 {
2599 *local_got = s->size;
2600 s->size += TILEGX_ELF_WORD_BYTES (htab);
2601 if (*local_tls_type == GOT_TLS_GD)
2602 s->size += TILEGX_ELF_WORD_BYTES (htab);
2603 if (bfd_link_pic (info)
2604 || *local_tls_type == GOT_TLS_GD
2605 || *local_tls_type == GOT_TLS_IE)
2606 srel->size += TILEGX_ELF_RELA_BYTES (htab);
2607 }
2608 else
2609 *local_got = (bfd_vma) -1;
2610 }
2611 }
2612
2613 /* Allocate global sym .plt and .got entries, and space for global
2614 sym dynamic relocs. */
2615 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
2616
2617 if (elf_hash_table (info)->dynamic_sections_created)
2618 {
2619 /* If the .got section is more than 0x8000 bytes, we add
2620 0x8000 to the value of _GLOBAL_OFFSET_TABLE_, so that 16
2621 bit relocations have a greater chance of working. */
2622 if (htab->elf.sgot->size >= 0x8000
2623 && elf_hash_table (info)->hgot->root.u.def.value == 0)
2624 elf_hash_table (info)->hgot->root.u.def.value = 0x8000;
2625 }
2626
2627 if (htab->elf.sgotplt)
2628 {
2629 struct elf_link_hash_entry *got;
2630 got = elf_link_hash_lookup (elf_hash_table (info),
2631 "_GLOBAL_OFFSET_TABLE_",
2632 FALSE, FALSE, FALSE);
2633
2634 /* Don't allocate .got.plt section if there are no GOT nor PLT
2635 entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */
2636 if ((got == NULL
2637 || !got->ref_regular_nonweak)
2638 && (htab->elf.sgotplt->size
2639 == (unsigned)GOTPLT_HEADER_SIZE (htab))
2640 && (htab->elf.splt == NULL
2641 || htab->elf.splt->size == 0)
2642 && (htab->elf.sgot == NULL
2643 || (htab->elf.sgot->size
2644 == get_elf_backend_data (output_bfd)->got_header_size)))
2645 htab->elf.sgotplt->size = 0;
2646 }
2647
2648 /* The check_relocs and adjust_dynamic_symbol entry points have
2649 determined the sizes of the various dynamic sections. Allocate
2650 memory for them. */
2651 for (s = dynobj->sections; s != NULL; s = s->next)
2652 {
2653 if ((s->flags & SEC_LINKER_CREATED) == 0)
2654 continue;
2655
2656 if (s == htab->elf.splt
2657 || s == htab->elf.sgot
2658 || s == htab->elf.sgotplt
2659 || s == htab->elf.sdynbss
2660 || s == htab->elf.sdynrelro)
2661 {
2662 /* Strip this section if we don't need it; see the
2663 comment below. */
2664 }
2665 else if (strncmp (s->name, ".rela", 5) == 0)
2666 {
2667 if (s->size != 0)
2668 {
2669 /* We use the reloc_count field as a counter if we need
2670 to copy relocs into the output file. */
2671 s->reloc_count = 0;
2672 }
2673 }
2674 else
2675 {
2676 /* It's not one of our sections. */
2677 continue;
2678 }
2679
2680 if (s->size == 0)
2681 {
2682 /* If we don't need this section, strip it from the
2683 output file. This is mostly to handle .rela.bss and
2684 .rela.plt. We must create both sections in
2685 create_dynamic_sections, because they must be created
2686 before the linker maps input sections to output
2687 sections. The linker does that before
2688 adjust_dynamic_symbol is called, and it is that
2689 function which decides whether anything needs to go
2690 into these sections. */
2691 s->flags |= SEC_EXCLUDE;
2692 continue;
2693 }
2694
2695 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2696 continue;
2697
2698 /* Allocate memory for the section contents. Zero the memory
2699 for the benefit of .rela.plt, which has 4 unused entries
2700 at the beginning, and we don't want garbage. */
2701 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2702 if (s->contents == NULL)
2703 return FALSE;
2704 }
2705
2706 if (elf_hash_table (info)->dynamic_sections_created)
2707 {
2708 /* Add some entries to the .dynamic section. We fill in the
2709 values later, in tilegx_elf_finish_dynamic_sections, but we
2710 must add the entries now so that we get the correct size for
2711 the .dynamic section. The DT_DEBUG entry is filled in by the
2712 dynamic linker and used by the debugger. */
2713 #define add_dynamic_entry(TAG, VAL) \
2714 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2715
2716 if (bfd_link_executable (info))
2717 {
2718 if (!add_dynamic_entry (DT_DEBUG, 0))
2719 return FALSE;
2720 }
2721
2722 if (htab->elf.srelplt->size != 0)
2723 {
2724 if (!add_dynamic_entry (DT_PLTGOT, 0)
2725 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2726 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2727 || !add_dynamic_entry (DT_JMPREL, 0))
2728 return FALSE;
2729 }
2730
2731 if (!add_dynamic_entry (DT_RELA, 0)
2732 || !add_dynamic_entry (DT_RELASZ, 0)
2733 || !add_dynamic_entry (DT_RELAENT, TILEGX_ELF_RELA_BYTES (htab)))
2734 return FALSE;
2735
2736 /* If any dynamic relocs apply to a read-only section,
2737 then we need a DT_TEXTREL entry. */
2738 if ((info->flags & DF_TEXTREL) == 0)
2739 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
2740
2741 if (info->flags & DF_TEXTREL)
2742 {
2743 if (!add_dynamic_entry (DT_TEXTREL, 0))
2744 return FALSE;
2745 }
2746 }
2747 #undef add_dynamic_entry
2748
2749 return TRUE;
2750 }
2751 \f
2752 /* Return the base VMA address which should be subtracted from real addresses
2753 when resolving @dtpoff relocation.
2754 This is PT_TLS segment p_vaddr. */
2755
2756 static bfd_vma
2757 dtpoff_base (struct bfd_link_info *info)
2758 {
2759 /* If tls_sec is NULL, we should have signalled an error already. */
2760 if (elf_hash_table (info)->tls_sec == NULL)
2761 return 0;
2762 return elf_hash_table (info)->tls_sec->vma;
2763 }
2764
2765 /* Return the relocation value for @tpoff relocation. */
2766
2767 static bfd_vma
2768 tpoff (struct bfd_link_info *info, bfd_vma address)
2769 {
2770 struct elf_link_hash_table *htab = elf_hash_table (info);
2771
2772 /* If tls_sec is NULL, we should have signalled an error already. */
2773 if (htab->tls_sec == NULL)
2774 return 0;
2775
2776 return (address - htab->tls_sec->vma);
2777 }
2778
2779 /* Copy SIZE bits from FROM to TO at address ADDR. */
2780
2781 static void
2782 tilegx_copy_bits (bfd_byte *addr, int from, int to, int size)
2783 {
2784 int i;
2785 for (i = 0; i < size; i++)
2786 {
2787 int from_byte = (from + i) / 8;
2788 int from_bit = (from + i) % 8;
2789 int to_byte = (to + i) / 8;
2790 int to_bit = (to + i) % 8;
2791 bfd_byte to_mask = 1 << to_bit;
2792 addr[to_byte] = (addr[to_byte] & ~to_mask)
2793 | ((addr[from_byte] >> from_bit << to_bit) & to_mask);
2794 }
2795 }
2796
2797 /* Replace the MASK bits in ADDR with those in INSN, for the next
2798 TILEGX_BUNDLE_SIZE_IN_BYTES bytes. */
2799
2800 static void
2801 tilegx_replace_insn (bfd_byte *addr, const bfd_byte *mask,
2802 const bfd_byte *insn)
2803 {
2804 int i;
2805 for (i = 0; i < TILEGX_BUNDLE_SIZE_IN_BYTES; i++)
2806 {
2807 addr[i] = (addr[i] & ~mask[i]) | (insn[i] & mask[i]);
2808 }
2809 }
2810
2811 /* Mask to extract the bits corresponding to an instruction in a
2812 specific pipe of a bundle. */
2813 static const bfd_byte insn_mask_X1[] = {
2814 0x00, 0x00, 0x00, 0x80, 0xff, 0xff, 0xff, 0x3f
2815 };
2816
2817 /* Mask to extract the bits corresponding to an instruction in a
2818 specific pipe of a bundle, minus the destination operand and the
2819 first source operand. */
2820 static const bfd_byte insn_mask_X0_no_dest_no_srca[] = {
2821 0x00, 0xf0, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00
2822 };
2823
2824 static const bfd_byte insn_mask_X1_no_dest_no_srca[] = {
2825 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0x3f
2826 };
2827
2828 static const bfd_byte insn_mask_Y0_no_dest_no_srca[] = {
2829 0x00, 0xf0, 0x0f, 0x78, 0x00, 0x00, 0x00, 0x00
2830 };
2831 static const bfd_byte insn_mask_Y1_no_dest_no_srca[] = {
2832 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x07, 0x3c
2833 };
2834
2835 /* Mask to extract the bits corresponding to an instruction in a
2836 specific pipe of a bundle, minus the register operands. */
2837 static const bfd_byte insn_mask_X0_no_operand[] = {
2838 0x00, 0x00, 0xfc, 0x7f, 0x00, 0x00, 0x00, 0x00
2839 };
2840
2841 static const bfd_byte insn_mask_X1_no_operand[] = {
2842 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0x3f
2843 };
2844
2845 static const bfd_byte insn_mask_Y0_no_operand[] = {
2846 0x00, 0x00, 0x0c, 0x78, 0x00, 0x00, 0x00, 0x00
2847 };
2848
2849 static const bfd_byte insn_mask_Y1_no_operand[] = {
2850 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x3c
2851 };
2852
2853 /* Various instructions synthesized to support tls references. */
2854
2855 /* ld r0, r0 in the X1 pipe, used for tls ie. */
2856 static const bfd_byte insn_tls_ie_ld_X1[] = {
2857 0x00, 0x00, 0x00, 0x00, 0x00, 0xe8, 0x6a, 0x28
2858 };
2859
2860 /* ld4s r0, r0 in the X1 pipe, used for tls ie. */
2861 static const bfd_byte insn_tls_ie_ld4s_X1[] = {
2862 0x00, 0x00, 0x00, 0x00, 0x00, 0x98, 0x6a, 0x28
2863 };
2864
2865 /* add r0, r0, tp in various pipes, used for tls ie. */
2866 static const bfd_byte insn_tls_ie_add_X0X1[] = {
2867 0x00, 0x50, 0x0f, 0x50, 0x00, 0xa8, 0x07, 0x28
2868 };
2869 static const bfd_byte insn_tls_ie_add_Y0Y1[] = {
2870 0x00, 0x50, 0x27, 0x2c, 0x00, 0xa8, 0x13, 0x9a
2871 };
2872
2873 /* addx r0, r0, tp in various pipes, used for tls ie. */
2874 static const bfd_byte insn_tls_ie_addx_X0X1[] = {
2875 0x00, 0x50, 0x0b, 0x50, 0x00, 0xa8, 0x05, 0x28
2876 };
2877 static const bfd_byte insn_tls_ie_addx_Y0Y1[] = {
2878 0x00, 0x50, 0x03, 0x2c, 0x00, 0xa8, 0x01, 0x9a
2879 };
2880
2881 /* move r0, r0 in various pipes, used for tls gd. */
2882 static const bfd_byte insn_tls_gd_add_X0X1[] = {
2883 0x00, 0xf0, 0x07, 0x51, 0x00, 0xf8, 0x3b, 0x28
2884 };
2885 static const bfd_byte insn_tls_gd_add_Y0Y1[] = {
2886 0x00, 0xf0, 0x0b, 0x54, 0x00, 0xf8, 0x05, 0xae
2887 };
2888
2889 static const bfd_byte *insn_move_X0X1 = insn_tls_gd_add_X0X1;
2890 static const bfd_byte *insn_move_Y0Y1 = insn_tls_gd_add_Y0Y1;
2891
2892 static const bfd_byte *insn_add_X0X1 = insn_tls_ie_add_X0X1;
2893 static const bfd_byte *insn_add_Y0Y1 = insn_tls_ie_add_Y0Y1;
2894
2895 static const bfd_byte *insn_addx_X0X1 = insn_tls_ie_addx_X0X1;
2896 static const bfd_byte *insn_addx_Y0Y1 = insn_tls_ie_addx_Y0Y1;
2897
2898 /* Relocate an TILEGX ELF section.
2899
2900 The RELOCATE_SECTION function is called by the new ELF backend linker
2901 to handle the relocations for a section.
2902
2903 The relocs are always passed as Rela structures.
2904
2905 This function is responsible for adjusting the section contents as
2906 necessary, and (if generating a relocatable output file) adjusting
2907 the reloc addend as necessary.
2908
2909 This function does not have to worry about setting the reloc
2910 address or the reloc symbol index.
2911
2912 LOCAL_SYMS is a pointer to the swapped in local symbols.
2913
2914 LOCAL_SECTIONS is an array giving the section in the input file
2915 corresponding to the st_shndx field of each local symbol.
2916
2917 The global hash table entry for the global symbols can be found
2918 via elf_sym_hashes (input_bfd).
2919
2920 When generating relocatable output, this function must handle
2921 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2922 going to be the section symbol corresponding to the output
2923 section, which means that the addend must be adjusted
2924 accordingly. */
2925
2926 bfd_boolean
2927 tilegx_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
2928 bfd *input_bfd, asection *input_section,
2929 bfd_byte *contents, Elf_Internal_Rela *relocs,
2930 Elf_Internal_Sym *local_syms,
2931 asection **local_sections)
2932 {
2933 struct tilegx_elf_link_hash_table *htab;
2934 Elf_Internal_Shdr *symtab_hdr;
2935 struct elf_link_hash_entry **sym_hashes;
2936 bfd_vma *local_got_offsets;
2937 bfd_vma got_base;
2938 asection *sreloc;
2939 Elf_Internal_Rela *rel;
2940 Elf_Internal_Rela *relend;
2941 int num_relocs;
2942
2943 htab = tilegx_elf_hash_table (info);
2944 BFD_ASSERT (htab != NULL);
2945 symtab_hdr = &elf_symtab_hdr (input_bfd);
2946 sym_hashes = elf_sym_hashes (input_bfd);
2947 local_got_offsets = elf_local_got_offsets (input_bfd);
2948
2949 if (elf_hash_table (info)->hgot == NULL)
2950 got_base = 0;
2951 else
2952 got_base = elf_hash_table (info)->hgot->root.u.def.value;
2953
2954 sreloc = elf_section_data (input_section)->sreloc;
2955
2956 rel = relocs;
2957 num_relocs = input_section->reloc_count;
2958 relend = relocs + num_relocs;
2959 for (; rel < relend; rel++)
2960 {
2961 int r_type, tls_type;
2962 bfd_boolean is_tls_iele, is_tls_le;
2963 reloc_howto_type *howto;
2964 unsigned long r_symndx;
2965 struct elf_link_hash_entry *h;
2966 Elf_Internal_Sym *sym;
2967 tilegx_create_func create_func;
2968 asection *sec;
2969 bfd_vma relocation;
2970 bfd_reloc_status_type r;
2971 const char *name;
2972 bfd_vma off;
2973 bfd_boolean is_plt = FALSE;
2974 bfd_boolean resolved_to_zero;
2975 bfd_boolean unresolved_reloc;
2976
2977 r_type = TILEGX_ELF_R_TYPE (rel->r_info);
2978 if (r_type == R_TILEGX_GNU_VTINHERIT
2979 || r_type == R_TILEGX_GNU_VTENTRY)
2980 continue;
2981
2982 if ((unsigned int)r_type >= ARRAY_SIZE (tilegx_elf_howto_table))
2983 return _bfd_unrecognized_reloc (input_bfd, input_section, r_type);
2984
2985 howto = tilegx_elf_howto_table + r_type;
2986
2987 /* This is a final link. */
2988 r_symndx = TILEGX_ELF_R_SYMNDX (htab, rel->r_info);
2989 h = NULL;
2990 sym = NULL;
2991 sec = NULL;
2992 unresolved_reloc = FALSE;
2993 if (r_symndx < symtab_hdr->sh_info)
2994 {
2995 sym = local_syms + r_symndx;
2996 sec = local_sections[r_symndx];
2997 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2998 }
2999 else
3000 {
3001 bfd_boolean warned ATTRIBUTE_UNUSED;
3002 bfd_boolean ignored ATTRIBUTE_UNUSED;
3003
3004 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3005 r_symndx, symtab_hdr, sym_hashes,
3006 h, sec, relocation,
3007 unresolved_reloc, warned, ignored);
3008 if (warned)
3009 {
3010 /* To avoid generating warning messages about truncated
3011 relocations, set the relocation's address to be the same as
3012 the start of this section. */
3013 if (input_section->output_section != NULL)
3014 relocation = input_section->output_section->vma;
3015 else
3016 relocation = 0;
3017 }
3018 }
3019
3020 if (sec != NULL && discarded_section (sec))
3021 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3022 rel, 1, relend, howto, 0, contents);
3023
3024 if (bfd_link_relocatable (info))
3025 continue;
3026
3027 if (h != NULL)
3028 name = h->root.root.string;
3029 else
3030 {
3031 name = (bfd_elf_string_from_elf_section
3032 (input_bfd, symtab_hdr->sh_link, sym->st_name));
3033 if (name == NULL || *name == '\0')
3034 name = bfd_section_name (input_bfd, sec);
3035 }
3036
3037 switch (r_type)
3038 {
3039 case R_TILEGX_TLS_GD_CALL:
3040 case R_TILEGX_IMM8_X0_TLS_GD_ADD:
3041 case R_TILEGX_IMM8_Y0_TLS_GD_ADD:
3042 case R_TILEGX_IMM8_X1_TLS_GD_ADD:
3043 case R_TILEGX_IMM8_Y1_TLS_GD_ADD:
3044 case R_TILEGX_IMM8_X0_TLS_ADD:
3045 case R_TILEGX_IMM8_Y0_TLS_ADD:
3046 case R_TILEGX_IMM8_X1_TLS_ADD:
3047 case R_TILEGX_IMM8_Y1_TLS_ADD:
3048 tls_type = GOT_UNKNOWN;
3049 if (h == NULL && local_got_offsets)
3050 tls_type =
3051 _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx];
3052 else if (h != NULL)
3053 tls_type = tilegx_elf_hash_entry(h)->tls_type;
3054
3055 is_tls_iele = (! bfd_link_pic (info) || tls_type == GOT_TLS_IE);
3056 is_tls_le = is_tls_iele && (!input_section->sec_flg0
3057 && !bfd_link_pic (info)
3058 && (h == NULL || h->dynindx == -1));
3059
3060 if (r_type == R_TILEGX_TLS_GD_CALL)
3061 {
3062 if (is_tls_le)
3063 {
3064 /* GD -> LE */
3065 tilegx_replace_insn (contents + rel->r_offset,
3066 insn_mask_X1, insn_move_X0X1);
3067 continue;
3068 }
3069 else if (is_tls_iele)
3070 {
3071 /* GD -> IE */
3072 if (ABI_64_P (output_bfd))
3073 tilegx_replace_insn (contents + rel->r_offset,
3074 insn_mask_X1, insn_tls_ie_ld_X1);
3075 else
3076 tilegx_replace_insn (contents + rel->r_offset,
3077 insn_mask_X1, insn_tls_ie_ld4s_X1);
3078 continue;
3079 }
3080
3081 /* GD -> GD */
3082 h = (struct elf_link_hash_entry *)
3083 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
3084 FALSE, TRUE);
3085 BFD_ASSERT (h != NULL);
3086 r_type = R_TILEGX_JUMPOFF_X1_PLT;
3087 howto = tilegx_elf_howto_table + r_type;
3088 }
3089 else if (r_type == R_TILEGX_IMM8_X0_TLS_ADD
3090 || r_type == R_TILEGX_IMM8_X1_TLS_ADD
3091 || r_type == R_TILEGX_IMM8_Y0_TLS_ADD
3092 || r_type == R_TILEGX_IMM8_Y1_TLS_ADD)
3093 {
3094 bfd_boolean is_pipe0 =
3095 (r_type == R_TILEGX_IMM8_X0_TLS_ADD
3096 || r_type == R_TILEGX_IMM8_Y0_TLS_ADD);
3097 bfd_boolean is_X0X1 =
3098 (r_type == R_TILEGX_IMM8_X0_TLS_ADD
3099 || r_type == R_TILEGX_IMM8_X1_TLS_ADD);
3100 int dest_begin = is_pipe0 ? 0 : 31;
3101 int src_begin;
3102 const bfd_byte *insn;
3103 const bfd_byte *mask = NULL;
3104
3105 if (is_tls_le)
3106 {
3107 /* 1. copy dest operand into the first source operand.
3108 2. change the opcode to "move". */
3109 src_begin = is_pipe0 ? 6 : 37;
3110 insn = is_X0X1 ? insn_move_X0X1 : insn_move_Y0Y1;
3111
3112 switch (r_type)
3113 {
3114 case R_TILEGX_IMM8_X0_TLS_ADD:
3115 mask = insn_mask_X0_no_dest_no_srca;
3116 break;
3117 case R_TILEGX_IMM8_X1_TLS_ADD:
3118 mask = insn_mask_X1_no_dest_no_srca;
3119 break;
3120 case R_TILEGX_IMM8_Y0_TLS_ADD:
3121 mask = insn_mask_Y0_no_dest_no_srca;
3122 break;
3123 case R_TILEGX_IMM8_Y1_TLS_ADD:
3124 mask = insn_mask_Y1_no_dest_no_srca;
3125 break;
3126 }
3127 }
3128 else
3129 {
3130 /* 1. copy dest operand into the second source operand.
3131 2. change the opcode to "add". */
3132 src_begin = is_pipe0 ? 12 : 43;
3133 if (ABI_64_P (output_bfd))
3134 insn = is_X0X1 ? insn_add_X0X1 : insn_add_Y0Y1;
3135 else
3136 insn = is_X0X1 ? insn_addx_X0X1 : insn_addx_Y0Y1;
3137
3138 switch (r_type)
3139 {
3140 case R_TILEGX_IMM8_X0_TLS_ADD:
3141 mask = insn_mask_X0_no_operand;
3142 break;
3143 case R_TILEGX_IMM8_X1_TLS_ADD:
3144 mask = insn_mask_X1_no_operand;
3145 break;
3146 case R_TILEGX_IMM8_Y0_TLS_ADD:
3147 mask = insn_mask_Y0_no_operand;
3148 break;
3149 case R_TILEGX_IMM8_Y1_TLS_ADD:
3150 mask = insn_mask_Y1_no_operand;
3151 break;
3152 }
3153 }
3154
3155 tilegx_copy_bits (contents + rel->r_offset, dest_begin,
3156 src_begin, 6);
3157 tilegx_replace_insn (contents + rel->r_offset, mask, insn);
3158
3159 continue;
3160 }
3161 else
3162 {
3163 const bfd_byte *mask = NULL;
3164 const bfd_byte *add_insn = NULL;
3165 bfd_boolean is_64bit = ABI_64_P (output_bfd);
3166
3167 switch (r_type)
3168 {
3169 case R_TILEGX_IMM8_X0_TLS_GD_ADD:
3170 add_insn = is_tls_iele
3171 ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1)
3172 : insn_tls_gd_add_X0X1;
3173 mask = insn_mask_X0_no_dest_no_srca;
3174 break;
3175 case R_TILEGX_IMM8_X1_TLS_GD_ADD:
3176 add_insn = is_tls_iele
3177 ? (is_64bit ? insn_tls_ie_add_X0X1 : insn_tls_ie_addx_X0X1)
3178 : insn_tls_gd_add_X0X1;
3179 mask = insn_mask_X1_no_dest_no_srca;
3180 break;
3181 case R_TILEGX_IMM8_Y0_TLS_GD_ADD:
3182 add_insn = is_tls_iele
3183 ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1)
3184 : insn_tls_gd_add_Y0Y1;
3185 mask = insn_mask_Y0_no_dest_no_srca;
3186 break;
3187 case R_TILEGX_IMM8_Y1_TLS_GD_ADD:
3188 add_insn = is_tls_iele
3189 ? (is_64bit ? insn_tls_ie_add_Y0Y1 : insn_tls_ie_addx_Y0Y1)
3190 : insn_tls_gd_add_Y0Y1;
3191 mask = insn_mask_Y1_no_dest_no_srca;
3192 break;
3193 }
3194
3195 tilegx_replace_insn (contents + rel->r_offset, mask, add_insn);
3196
3197 continue;
3198 }
3199 break;
3200 case R_TILEGX_TLS_IE_LOAD:
3201 if (!input_section->sec_flg0
3202 && !bfd_link_pic (info)
3203 && (h == NULL || h->dynindx == -1))
3204 {
3205 /* IE -> LE */
3206 tilegx_replace_insn (contents + rel->r_offset,
3207 insn_mask_X1_no_dest_no_srca,
3208 insn_move_X0X1);
3209 }
3210 else
3211 {
3212 /* IE -> IE */
3213 if (ABI_64_P (output_bfd))
3214 tilegx_replace_insn (contents + rel->r_offset,
3215 insn_mask_X1_no_dest_no_srca,
3216 insn_tls_ie_ld_X1);
3217 else
3218 tilegx_replace_insn (contents + rel->r_offset,
3219 insn_mask_X1_no_dest_no_srca,
3220 insn_tls_ie_ld4s_X1);
3221 }
3222 continue;
3223 break;
3224 default:
3225 break;
3226 }
3227
3228 resolved_to_zero = (h != NULL
3229 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
3230
3231 switch (r_type)
3232 {
3233 case R_TILEGX_IMM16_X0_HW0_GOT:
3234 case R_TILEGX_IMM16_X1_HW0_GOT:
3235 case R_TILEGX_IMM16_X0_HW0_LAST_GOT:
3236 case R_TILEGX_IMM16_X1_HW0_LAST_GOT:
3237 case R_TILEGX_IMM16_X0_HW1_LAST_GOT:
3238 case R_TILEGX_IMM16_X1_HW1_LAST_GOT:
3239 /* Relocation is to the entry for this symbol in the global
3240 offset table. */
3241 if (htab->elf.sgot == NULL)
3242 abort ();
3243
3244 if (h != NULL)
3245 {
3246 bfd_boolean dyn;
3247
3248 off = h->got.offset;
3249 BFD_ASSERT (off != (bfd_vma) -1);
3250 dyn = elf_hash_table (info)->dynamic_sections_created;
3251
3252 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3253 bfd_link_pic (info),
3254 h)
3255 || (bfd_link_pic (info)
3256 && SYMBOL_REFERENCES_LOCAL (info, h)))
3257 {
3258 /* This is actually a static link, or it is a
3259 -Bsymbolic link and the symbol is defined
3260 locally, or the symbol was forced to be local
3261 because of a version file. We must initialize
3262 this entry in the global offset table. Since the
3263 offset must always be a multiple
3264 of 8 for 64-bit, we use the least significant bit
3265 to record whether we have initialized it already.
3266
3267 When doing a dynamic link, we create a .rela.got
3268 relocation entry to initialize the value. This
3269 is done in the finish_dynamic_symbol routine. */
3270 if ((off & 1) != 0)
3271 off &= ~1;
3272 else
3273 {
3274 TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation,
3275 htab->elf.sgot->contents + off);
3276 h->got.offset |= 1;
3277 }
3278 }
3279 else
3280 unresolved_reloc = FALSE;
3281 }
3282 else
3283 {
3284 BFD_ASSERT (local_got_offsets != NULL
3285 && local_got_offsets[r_symndx] != (bfd_vma) -1);
3286
3287 off = local_got_offsets[r_symndx];
3288
3289 /* The offset must always be a multiple of 8 on 64-bit.
3290 We use the least significant bit to record
3291 whether we have already processed this entry. */
3292 if ((off & 1) != 0)
3293 off &= ~1;
3294 else
3295 {
3296 if (bfd_link_pic (info))
3297 {
3298 asection *s;
3299 Elf_Internal_Rela outrel;
3300
3301 /* We need to generate a R_TILEGX_RELATIVE reloc
3302 for the dynamic linker. */
3303 s = htab->elf.srelgot;
3304 BFD_ASSERT (s != NULL);
3305
3306 outrel.r_offset = (htab->elf.sgot->output_section->vma
3307 + htab->elf.sgot->output_offset
3308 + off);
3309 outrel.r_info =
3310 TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE);
3311 outrel.r_addend = relocation;
3312 relocation = 0;
3313 tilegx_elf_append_rela (output_bfd, s, &outrel);
3314 }
3315
3316 TILEGX_ELF_PUT_WORD (htab, output_bfd, relocation,
3317 htab->elf.sgot->contents + off);
3318 local_got_offsets[r_symndx] |= 1;
3319 }
3320 }
3321 relocation = off - got_base;
3322 break;
3323
3324 case R_TILEGX_JUMPOFF_X1_PLT:
3325 case R_TILEGX_IMM16_X0_HW0_PLT_PCREL:
3326 case R_TILEGX_IMM16_X1_HW0_PLT_PCREL:
3327 case R_TILEGX_IMM16_X0_HW1_PLT_PCREL:
3328 case R_TILEGX_IMM16_X1_HW1_PLT_PCREL:
3329 case R_TILEGX_IMM16_X0_HW2_PLT_PCREL:
3330 case R_TILEGX_IMM16_X1_HW2_PLT_PCREL:
3331 case R_TILEGX_IMM16_X0_HW3_PLT_PCREL:
3332 case R_TILEGX_IMM16_X1_HW3_PLT_PCREL:
3333 case R_TILEGX_IMM16_X0_HW0_LAST_PLT_PCREL:
3334 case R_TILEGX_IMM16_X1_HW0_LAST_PLT_PCREL:
3335 case R_TILEGX_IMM16_X0_HW1_LAST_PLT_PCREL:
3336 case R_TILEGX_IMM16_X1_HW1_LAST_PLT_PCREL:
3337 case R_TILEGX_IMM16_X0_HW2_LAST_PLT_PCREL:
3338 case R_TILEGX_IMM16_X1_HW2_LAST_PLT_PCREL:
3339 /* Relocation is to the entry for this symbol in the
3340 procedure linkage table. */
3341 BFD_ASSERT (h != NULL);
3342
3343 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL)
3344 {
3345 /* We didn't make a PLT entry for this symbol. This
3346 happens when statically linking PIC code, or when
3347 using -Bsymbolic. */
3348 break;
3349 }
3350
3351 relocation = (htab->elf.splt->output_section->vma
3352 + htab->elf.splt->output_offset
3353 + h->plt.offset);
3354 unresolved_reloc = FALSE;
3355 break;
3356
3357 case R_TILEGX_64_PCREL:
3358 case R_TILEGX_32_PCREL:
3359 case R_TILEGX_16_PCREL:
3360 case R_TILEGX_8_PCREL:
3361 case R_TILEGX_IMM16_X0_HW0_PCREL:
3362 case R_TILEGX_IMM16_X1_HW0_PCREL:
3363 case R_TILEGX_IMM16_X0_HW1_PCREL:
3364 case R_TILEGX_IMM16_X1_HW1_PCREL:
3365 case R_TILEGX_IMM16_X0_HW2_PCREL:
3366 case R_TILEGX_IMM16_X1_HW2_PCREL:
3367 case R_TILEGX_IMM16_X0_HW3_PCREL:
3368 case R_TILEGX_IMM16_X1_HW3_PCREL:
3369 case R_TILEGX_IMM16_X0_HW0_LAST_PCREL:
3370 case R_TILEGX_IMM16_X1_HW0_LAST_PCREL:
3371 case R_TILEGX_IMM16_X0_HW1_LAST_PCREL:
3372 case R_TILEGX_IMM16_X1_HW1_LAST_PCREL:
3373 case R_TILEGX_IMM16_X0_HW2_LAST_PCREL:
3374 case R_TILEGX_IMM16_X1_HW2_LAST_PCREL:
3375 if (h != NULL
3376 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3377 break;
3378 /* Fall through. */
3379 case R_TILEGX_64:
3380 case R_TILEGX_32:
3381 case R_TILEGX_16:
3382 case R_TILEGX_8:
3383 case R_TILEGX_HW0:
3384 case R_TILEGX_HW1:
3385 case R_TILEGX_HW2:
3386 case R_TILEGX_HW3:
3387 case R_TILEGX_HW0_LAST:
3388 case R_TILEGX_HW1_LAST:
3389 case R_TILEGX_HW2_LAST:
3390 case R_TILEGX_COPY:
3391 case R_TILEGX_GLOB_DAT:
3392 case R_TILEGX_JMP_SLOT:
3393 case R_TILEGX_RELATIVE:
3394 case R_TILEGX_BROFF_X1:
3395 case R_TILEGX_JUMPOFF_X1:
3396 case R_TILEGX_IMM8_X0:
3397 case R_TILEGX_IMM8_Y0:
3398 case R_TILEGX_IMM8_X1:
3399 case R_TILEGX_IMM8_Y1:
3400 case R_TILEGX_DEST_IMM8_X1:
3401 case R_TILEGX_MT_IMM14_X1:
3402 case R_TILEGX_MF_IMM14_X1:
3403 case R_TILEGX_MMSTART_X0:
3404 case R_TILEGX_MMEND_X0:
3405 case R_TILEGX_SHAMT_X0:
3406 case R_TILEGX_SHAMT_X1:
3407 case R_TILEGX_SHAMT_Y0:
3408 case R_TILEGX_SHAMT_Y1:
3409 case R_TILEGX_IMM16_X0_HW0:
3410 case R_TILEGX_IMM16_X1_HW0:
3411 case R_TILEGX_IMM16_X0_HW1:
3412 case R_TILEGX_IMM16_X1_HW1:
3413 case R_TILEGX_IMM16_X0_HW2:
3414 case R_TILEGX_IMM16_X1_HW2:
3415 case R_TILEGX_IMM16_X0_HW3:
3416 case R_TILEGX_IMM16_X1_HW3:
3417 case R_TILEGX_IMM16_X0_HW0_LAST:
3418 case R_TILEGX_IMM16_X1_HW0_LAST:
3419 case R_TILEGX_IMM16_X0_HW1_LAST:
3420 case R_TILEGX_IMM16_X1_HW1_LAST:
3421 case R_TILEGX_IMM16_X0_HW2_LAST:
3422 case R_TILEGX_IMM16_X1_HW2_LAST:
3423 if ((input_section->flags & SEC_ALLOC) == 0)
3424 break;
3425
3426 if ((bfd_link_pic (info)
3427 && (h == NULL
3428 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3429 && !resolved_to_zero)
3430 || h->root.type != bfd_link_hash_undefweak)
3431 && (! howto->pc_relative
3432 || !SYMBOL_CALLS_LOCAL (info, h)))
3433 || (!bfd_link_pic (info)
3434 && h != NULL
3435 && h->dynindx != -1
3436 && !h->non_got_ref
3437 && ((h->def_dynamic
3438 && !h->def_regular)
3439 || h->root.type == bfd_link_hash_undefweak
3440 || h->root.type == bfd_link_hash_undefined)))
3441 {
3442 Elf_Internal_Rela outrel;
3443 bfd_boolean skip, relocate = FALSE;
3444
3445 /* When generating a shared object, these relocations
3446 are copied into the output file to be resolved at run
3447 time. */
3448
3449 BFD_ASSERT (sreloc != NULL);
3450
3451 skip = FALSE;
3452
3453 outrel.r_offset =
3454 _bfd_elf_section_offset (output_bfd, info, input_section,
3455 rel->r_offset);
3456 if (outrel.r_offset == (bfd_vma) -1)
3457 skip = TRUE;
3458 else if (outrel.r_offset == (bfd_vma) -2)
3459 skip = TRUE, relocate = TRUE;
3460 outrel.r_offset += (input_section->output_section->vma
3461 + input_section->output_offset);
3462
3463 switch (r_type)
3464 {
3465 case R_TILEGX_64_PCREL:
3466 case R_TILEGX_32_PCREL:
3467 case R_TILEGX_16_PCREL:
3468 case R_TILEGX_8_PCREL:
3469 /* If the symbol is not dynamic, we should not keep
3470 a dynamic relocation. But an .rela.* slot has been
3471 allocated for it, output R_TILEGX_NONE.
3472 FIXME: Add code tracking needed dynamic relocs as
3473 e.g. i386 has. */
3474 if (h->dynindx == -1)
3475 skip = TRUE, relocate = TRUE;
3476 break;
3477 }
3478
3479 if (skip)
3480 memset (&outrel, 0, sizeof outrel);
3481 /* h->dynindx may be -1 if the symbol was marked to
3482 become local. */
3483 else if (h != NULL &&
3484 h->dynindx != -1
3485 && (! is_plt
3486 || !bfd_link_pic (info)
3487 || !SYMBOLIC_BIND (info, h)
3488 || !h->def_regular))
3489 {
3490 BFD_ASSERT (h->dynindx != -1);
3491 outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3492 outrel.r_addend = rel->r_addend;
3493 }
3494 else
3495 {
3496 if (r_type == R_TILEGX_32 || r_type == R_TILEGX_64)
3497 {
3498 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0,
3499 R_TILEGX_RELATIVE);
3500 outrel.r_addend = relocation + rel->r_addend;
3501 }
3502 else
3503 {
3504 long indx;
3505
3506 outrel.r_addend = relocation + rel->r_addend;
3507
3508 if (is_plt)
3509 sec = htab->elf.splt;
3510
3511 if (bfd_is_abs_section (sec))
3512 indx = 0;
3513 else if (sec == NULL || sec->owner == NULL)
3514 {
3515 bfd_set_error (bfd_error_bad_value);
3516 return FALSE;
3517 }
3518 else
3519 {
3520 asection *osec;
3521
3522 /* We are turning this relocation into one
3523 against a section symbol. It would be
3524 proper to subtract the symbol's value,
3525 osec->vma, from the emitted reloc addend,
3526 but ld.so expects buggy relocs. */
3527 osec = sec->output_section;
3528 indx = elf_section_data (osec)->dynindx;
3529
3530 if (indx == 0)
3531 {
3532 osec = htab->elf.text_index_section;
3533 indx = elf_section_data (osec)->dynindx;
3534 }
3535
3536 /* FIXME: we really should be able to link non-pic
3537 shared libraries. */
3538 if (indx == 0)
3539 {
3540 BFD_FAIL ();
3541 _bfd_error_handler
3542 (_("%B: probably compiled without -fPIC?"),
3543 input_bfd);
3544 bfd_set_error (bfd_error_bad_value);
3545 return FALSE;
3546 }
3547 }
3548
3549 outrel.r_info = TILEGX_ELF_R_INFO (htab, rel, indx,
3550 r_type);
3551 }
3552 }
3553
3554 tilegx_elf_append_rela (output_bfd, sreloc, &outrel);
3555
3556 /* This reloc will be computed at runtime, so there's no
3557 need to do anything now. */
3558 if (! relocate)
3559 continue;
3560 }
3561 break;
3562
3563 case R_TILEGX_IMM16_X0_HW0_TLS_LE:
3564 case R_TILEGX_IMM16_X1_HW0_TLS_LE:
3565 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE:
3566 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE:
3567 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE:
3568 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE:
3569 if (bfd_link_pic (info))
3570 {
3571 Elf_Internal_Rela outrel;
3572 bfd_boolean skip;
3573
3574 BFD_ASSERT (sreloc != NULL);
3575 skip = FALSE;
3576 outrel.r_offset =
3577 _bfd_elf_section_offset (output_bfd, info, input_section,
3578 rel->r_offset);
3579 if (outrel.r_offset == (bfd_vma) -1)
3580 skip = TRUE;
3581 else if (outrel.r_offset == (bfd_vma) -2)
3582 skip = TRUE;
3583 outrel.r_offset += (input_section->output_section->vma
3584 + input_section->output_offset);
3585 if (skip)
3586 memset (&outrel, 0, sizeof outrel);
3587 else
3588 {
3589 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, r_type);
3590 outrel.r_addend = relocation - dtpoff_base (info)
3591 + rel->r_addend;
3592 }
3593
3594 tilegx_elf_append_rela (output_bfd, sreloc, &outrel);
3595 continue;
3596 }
3597 relocation = tpoff (info, relocation);
3598 break;
3599
3600 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
3601 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
3602 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
3603 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
3604 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
3605 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
3606 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
3607 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
3608 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
3609 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
3610 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
3611 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
3612 r_type = tilegx_elf_tls_transition (info, r_type, h == NULL,
3613 input_section->sec_flg0);
3614 tls_type = GOT_UNKNOWN;
3615 if (h == NULL && local_got_offsets)
3616 tls_type =
3617 _bfd_tilegx_elf_local_got_tls_type (input_bfd) [r_symndx];
3618 else if (h != NULL)
3619 {
3620 tls_type = tilegx_elf_hash_entry(h)->tls_type;
3621 if (!bfd_link_pic (info)
3622 && h->dynindx == -1
3623 && tls_type == GOT_TLS_IE)
3624 r_type = (!input_section->sec_flg0
3625 ? tilegx_tls_translate_to_le (r_type)
3626 : tilegx_tls_translate_to_ie (r_type));
3627 }
3628
3629 if (tls_type == GOT_TLS_IE)
3630 r_type = tilegx_tls_translate_to_ie (r_type);
3631
3632 if (r_type == R_TILEGX_IMM16_X0_HW0_TLS_LE
3633 || r_type == R_TILEGX_IMM16_X1_HW0_TLS_LE
3634 || r_type == R_TILEGX_IMM16_X0_HW0_LAST_TLS_LE
3635 || r_type == R_TILEGX_IMM16_X1_HW0_LAST_TLS_LE
3636 || r_type == R_TILEGX_IMM16_X0_HW1_LAST_TLS_LE
3637 || r_type == R_TILEGX_IMM16_X1_HW1_LAST_TLS_LE)
3638 {
3639 relocation = tpoff (info, relocation);
3640 break;
3641 }
3642
3643 if (h != NULL)
3644 {
3645 off = h->got.offset;
3646 h->got.offset |= 1;
3647 }
3648 else
3649 {
3650 BFD_ASSERT (local_got_offsets != NULL);
3651 off = local_got_offsets[r_symndx];
3652 local_got_offsets[r_symndx] |= 1;
3653 }
3654
3655 if (htab->elf.sgot == NULL)
3656 abort ();
3657
3658 if ((off & 1) != 0)
3659 off &= ~1;
3660 else
3661 {
3662 Elf_Internal_Rela outrel;
3663 int indx = 0;
3664 bfd_boolean need_relocs = FALSE;
3665
3666 if (htab->elf.srelgot == NULL)
3667 abort ();
3668
3669 if (h != NULL)
3670 {
3671 bfd_boolean dyn;
3672 dyn = htab->elf.dynamic_sections_created;
3673
3674 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3675 bfd_link_pic (info),
3676 h)
3677 && (!bfd_link_pic (info)
3678 || !SYMBOL_REFERENCES_LOCAL (info, h)))
3679 {
3680 indx = h->dynindx;
3681 }
3682 }
3683
3684 /* The GOT entries have not been initialized yet. Do it
3685 now, and emit any relocations. */
3686 if ((bfd_link_pic (info) || indx != 0)
3687 && (h == NULL
3688 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3689 || h->root.type != bfd_link_hash_undefweak))
3690 need_relocs = TRUE;
3691
3692 switch (r_type)
3693 {
3694 case R_TILEGX_IMM16_X0_HW0_TLS_IE:
3695 case R_TILEGX_IMM16_X1_HW0_TLS_IE:
3696 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_IE:
3697 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_IE:
3698 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_IE:
3699 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_IE:
3700 if (need_relocs) {
3701 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
3702 htab->elf.sgot->contents + off);
3703 outrel.r_offset = (htab->elf.sgot->output_section->vma
3704 + htab->elf.sgot->output_offset + off);
3705 outrel.r_addend = 0;
3706 if (indx == 0)
3707 outrel.r_addend = relocation - dtpoff_base (info);
3708 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx,
3709 TILEGX_ELF_TPOFF_RELOC (htab));
3710 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3711 } else {
3712 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3713 tpoff (info, relocation),
3714 htab->elf.sgot->contents + off);
3715 }
3716 break;
3717
3718 case R_TILEGX_IMM16_X0_HW0_TLS_GD:
3719 case R_TILEGX_IMM16_X1_HW0_TLS_GD:
3720 case R_TILEGX_IMM16_X0_HW0_LAST_TLS_GD:
3721 case R_TILEGX_IMM16_X1_HW0_LAST_TLS_GD:
3722 case R_TILEGX_IMM16_X0_HW1_LAST_TLS_GD:
3723 case R_TILEGX_IMM16_X1_HW1_LAST_TLS_GD:
3724 if (need_relocs) {
3725 outrel.r_offset = (htab->elf.sgot->output_section->vma
3726 + htab->elf.sgot->output_offset + off);
3727 outrel.r_addend = 0;
3728 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx,
3729 TILEGX_ELF_DTPMOD_RELOC (htab));
3730 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
3731 htab->elf.sgot->contents + off);
3732 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3733 if (indx == 0)
3734 {
3735 BFD_ASSERT (! unresolved_reloc);
3736 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3737 relocation - dtpoff_base (info),
3738 (htab->elf.sgot->contents + off +
3739 TILEGX_ELF_WORD_BYTES (htab)));
3740 }
3741 else
3742 {
3743 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
3744 (htab->elf.sgot->contents + off +
3745 TILEGX_ELF_WORD_BYTES (htab)));
3746 outrel.r_info = TILEGX_ELF_R_INFO (htab, NULL, indx,
3747 TILEGX_ELF_DTPOFF_RELOC (htab));
3748 outrel.r_offset += TILEGX_ELF_WORD_BYTES (htab);
3749 tilegx_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3750 }
3751 }
3752
3753 else {
3754 /* If we are not emitting relocations for a
3755 general dynamic reference, then we must be in a
3756 static link or an executable link with the
3757 symbol binding locally. Mark it as belonging
3758 to module 1, the executable. */
3759 TILEGX_ELF_PUT_WORD (htab, output_bfd, 1,
3760 htab->elf.sgot->contents + off );
3761 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3762 relocation - dtpoff_base (info),
3763 htab->elf.sgot->contents + off +
3764 TILEGX_ELF_WORD_BYTES (htab));
3765 }
3766 break;
3767 }
3768 }
3769
3770 if (off >= (bfd_vma) -2)
3771 abort ();
3772
3773 relocation = off - got_base;
3774 unresolved_reloc = FALSE;
3775 howto = tilegx_elf_howto_table + r_type;
3776 break;
3777
3778 default:
3779 break;
3780 }
3781
3782 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3783 because such sections are not SEC_ALLOC and thus ld.so will
3784 not process them. */
3785 if (unresolved_reloc
3786 && !((input_section->flags & SEC_DEBUGGING) != 0
3787 && h->def_dynamic)
3788 && _bfd_elf_section_offset (output_bfd, info, input_section,
3789 rel->r_offset) != (bfd_vma) -1)
3790 _bfd_error_handler
3791 /* xgettext:c-format */
3792 (_("%B(%A+%#Lx): unresolvable %s relocation against symbol `%s'"),
3793 input_bfd,
3794 input_section,
3795 rel->r_offset,
3796 howto->name,
3797 h->root.root.string);
3798
3799 r = bfd_reloc_continue;
3800
3801 /* Get the operand creation function, if any. */
3802 create_func = reloc_to_create_func[r_type];
3803 if (create_func == NULL)
3804 {
3805 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3806 contents, rel->r_offset,
3807 relocation, rel->r_addend);
3808 }
3809 else
3810 {
3811 if (howto->pc_relative)
3812 {
3813 relocation -=
3814 input_section->output_section->vma + input_section->output_offset;
3815 if (howto->pcrel_offset)
3816 relocation -= rel->r_offset;
3817 }
3818
3819 bfd_byte *data;
3820
3821 /* Add the relocation addend if any to the final target value */
3822 relocation += rel->r_addend;
3823
3824 /* Do basic range checking */
3825 r = bfd_check_overflow (howto->complain_on_overflow,
3826 howto->bitsize,
3827 howto->rightshift,
3828 TILEGX_ELF_WORD_BYTES (htab) * 8,
3829 relocation);
3830
3831 /*
3832 * Write the relocated value out into the raw section data.
3833 * Don't put a relocation out in the .rela section.
3834 */
3835 tilegx_bundle_bits mask = create_func(-1);
3836 tilegx_bundle_bits value = create_func(relocation >> howto->rightshift);
3837
3838 /* Only touch bytes while the mask is not 0, so we
3839 don't write to out of bounds memory if this is actually
3840 a 16-bit switch instruction. */
3841 for (data = contents + rel->r_offset; mask != 0; data++)
3842 {
3843 bfd_byte byte_mask = (bfd_byte)mask;
3844 *data = (*data & ~byte_mask) | ((bfd_byte)value & byte_mask);
3845 mask >>= 8;
3846 value >>= 8;
3847 }
3848 }
3849
3850 if (r != bfd_reloc_ok)
3851 {
3852 const char *msg = NULL;
3853
3854 switch (r)
3855 {
3856 case bfd_reloc_overflow:
3857 (*info->callbacks->reloc_overflow)
3858 (info, (h ? &h->root : NULL), name, howto->name,
3859 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
3860 break;
3861
3862 case bfd_reloc_undefined:
3863 (*info->callbacks->undefined_symbol)
3864 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
3865 break;
3866
3867 case bfd_reloc_outofrange:
3868 msg = _("internal error: out of range error");
3869 break;
3870
3871 case bfd_reloc_notsupported:
3872 msg = _("internal error: unsupported relocation error");
3873 break;
3874
3875 case bfd_reloc_dangerous:
3876 msg = _("internal error: dangerous relocation");
3877 break;
3878
3879 default:
3880 msg = _("internal error: unknown error");
3881 break;
3882 }
3883
3884 if (msg)
3885 (*info->callbacks->warning) (info, msg, name, input_bfd,
3886 input_section, rel->r_offset);
3887 }
3888 }
3889
3890 return TRUE;
3891 }
3892
3893 /* Finish up dynamic symbol handling. We set the contents of various
3894 dynamic sections here. */
3895
3896 bfd_boolean
3897 tilegx_elf_finish_dynamic_symbol (bfd *output_bfd,
3898 struct bfd_link_info *info,
3899 struct elf_link_hash_entry *h,
3900 Elf_Internal_Sym *sym)
3901 {
3902 struct tilegx_elf_link_hash_table *htab;
3903
3904 htab = tilegx_elf_hash_table (info);
3905 BFD_ASSERT (htab != NULL);
3906
3907 if (h->plt.offset != (bfd_vma) -1)
3908 {
3909 asection *splt;
3910 asection *srela;
3911 asection *sgotplt;
3912 Elf_Internal_Rela rela;
3913 bfd_byte *loc;
3914 bfd_vma r_offset;
3915 const struct elf_backend_data *bed = get_elf_backend_data (output_bfd);
3916
3917
3918 int rela_index;
3919
3920 /* This symbol has an entry in the PLT. Set it up. */
3921
3922 BFD_ASSERT (h->dynindx != -1);
3923
3924 splt = htab->elf.splt;
3925 srela = htab->elf.srelplt;
3926 sgotplt = htab->elf.sgotplt;
3927
3928 if (splt == NULL || srela == NULL)
3929 abort ();
3930
3931 /* Fill in the entry in the procedure linkage table. */
3932 rela_index = tilegx_plt_entry_build (output_bfd, htab, splt, sgotplt,
3933 h->plt.offset, &r_offset);
3934
3935 /* Fill in the entry in the global offset table, which initially points
3936 to the beginning of the plt. */
3937 TILEGX_ELF_PUT_WORD (htab, output_bfd,
3938 splt->output_section->vma + splt->output_offset,
3939 sgotplt->contents + r_offset);
3940
3941 /* Fill in the entry in the .rela.plt section. */
3942 rela.r_offset = (sgotplt->output_section->vma
3943 + sgotplt->output_offset
3944 + r_offset);
3945 rela.r_addend = 0;
3946 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_JMP_SLOT);
3947
3948 loc = srela->contents + rela_index * TILEGX_ELF_RELA_BYTES (htab);
3949 bed->s->swap_reloca_out (output_bfd, &rela, loc);
3950
3951 if (!h->def_regular)
3952 {
3953 /* Mark the symbol as undefined, rather than as defined in
3954 the .plt section. Leave the value alone. */
3955 sym->st_shndx = SHN_UNDEF;
3956 /* If the symbol is weak, we do need to clear the value.
3957 Otherwise, the PLT entry would provide a definition for
3958 the symbol even if the symbol wasn't defined anywhere,
3959 and so the symbol would never be NULL. */
3960 if (!h->ref_regular_nonweak)
3961 sym->st_value = 0;
3962 }
3963 }
3964
3965 if (h->got.offset != (bfd_vma) -1
3966 && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_GD
3967 && tilegx_elf_hash_entry(h)->tls_type != GOT_TLS_IE)
3968 {
3969 asection *sgot;
3970 asection *srela;
3971 Elf_Internal_Rela rela;
3972
3973 /* This symbol has an entry in the GOT. Set it up. */
3974
3975 sgot = htab->elf.sgot;
3976 srela = htab->elf.srelgot;
3977 BFD_ASSERT (sgot != NULL && srela != NULL);
3978
3979 rela.r_offset = (sgot->output_section->vma
3980 + sgot->output_offset
3981 + (h->got.offset &~ (bfd_vma) 1));
3982
3983 /* If this is a -Bsymbolic link, and the symbol is defined
3984 locally, we just want to emit a RELATIVE reloc. Likewise if
3985 the symbol was forced to be local because of a version file.
3986 The entry in the global offset table will already have been
3987 initialized in the relocate_section function. */
3988 if (bfd_link_pic (info)
3989 && (info->symbolic || h->dynindx == -1)
3990 && h->def_regular)
3991 {
3992 asection *sec = h->root.u.def.section;
3993 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, 0, R_TILEGX_RELATIVE);
3994 rela.r_addend = (h->root.u.def.value
3995 + sec->output_section->vma
3996 + sec->output_offset);
3997 }
3998 else
3999 {
4000 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_GLOB_DAT);
4001 rela.r_addend = 0;
4002 }
4003
4004 TILEGX_ELF_PUT_WORD (htab, output_bfd, 0,
4005 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
4006 tilegx_elf_append_rela (output_bfd, srela, &rela);
4007 }
4008
4009 if (h->needs_copy)
4010 {
4011 asection *s;
4012 Elf_Internal_Rela rela;
4013
4014 /* This symbols needs a copy reloc. Set it up. */
4015 BFD_ASSERT (h->dynindx != -1);
4016
4017 if (h->root.u.def.section == htab->elf.sdynrelro)
4018 s = htab->elf.sreldynrelro;
4019 else
4020 s = htab->elf.srelbss;
4021 BFD_ASSERT (s != NULL);
4022
4023 rela.r_offset = (h->root.u.def.value
4024 + h->root.u.def.section->output_section->vma
4025 + h->root.u.def.section->output_offset);
4026 rela.r_info = TILEGX_ELF_R_INFO (htab, NULL, h->dynindx, R_TILEGX_COPY);
4027 rela.r_addend = 0;
4028 tilegx_elf_append_rela (output_bfd, s, &rela);
4029 }
4030
4031 /* Mark some specially defined symbols as absolute. */
4032 if (h == htab->elf.hdynamic
4033 || (h == htab->elf.hgot || h == htab->elf.hplt))
4034 sym->st_shndx = SHN_ABS;
4035
4036 return TRUE;
4037 }
4038
4039 /* Finish up the dynamic sections. */
4040
4041 static bfd_boolean
4042 tilegx_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
4043 bfd *dynobj, asection *sdyn,
4044 asection *splt ATTRIBUTE_UNUSED)
4045 {
4046 struct tilegx_elf_link_hash_table *htab;
4047 const struct elf_backend_data *bed;
4048 bfd_byte *dyncon, *dynconend;
4049 size_t dynsize;
4050
4051 htab = tilegx_elf_hash_table (info);
4052 BFD_ASSERT (htab != NULL);
4053 bed = get_elf_backend_data (output_bfd);
4054 dynsize = bed->s->sizeof_dyn;
4055 dynconend = sdyn->contents + sdyn->size;
4056
4057 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize)
4058 {
4059 Elf_Internal_Dyn dyn;
4060 asection *s;
4061
4062 bed->s->swap_dyn_in (dynobj, dyncon, &dyn);
4063
4064 switch (dyn.d_tag)
4065 {
4066 case DT_PLTGOT:
4067 s = htab->elf.sgotplt;
4068 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4069 break;
4070 case DT_JMPREL:
4071 s = htab->elf.srelplt;
4072 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4073 break;
4074 case DT_PLTRELSZ:
4075 s = htab->elf.srelplt;
4076 dyn.d_un.d_val = s->size;
4077 break;
4078 default:
4079 continue;
4080 }
4081
4082 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4083 }
4084 return TRUE;
4085 }
4086
4087 bfd_boolean
4088 tilegx_elf_finish_dynamic_sections (bfd *output_bfd,
4089 struct bfd_link_info *info)
4090 {
4091 bfd *dynobj;
4092 asection *sdyn;
4093 struct tilegx_elf_link_hash_table *htab;
4094 size_t pad_size;
4095
4096 htab = tilegx_elf_hash_table (info);
4097 BFD_ASSERT (htab != NULL);
4098 dynobj = htab->elf.dynobj;
4099
4100 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4101
4102 if (elf_hash_table (info)->dynamic_sections_created)
4103 {
4104 asection *splt;
4105 bfd_boolean ret;
4106
4107 splt = htab->elf.splt;
4108 BFD_ASSERT (splt != NULL && sdyn != NULL);
4109
4110 ret = tilegx_finish_dyn (output_bfd, info, dynobj, sdyn, splt);
4111
4112 if (!ret)
4113 return ret;
4114
4115 /* Fill in the head and tail entries in the procedure linkage table. */
4116 if (splt->size > 0)
4117 {
4118 memcpy (splt->contents,
4119 ABI_64_P (output_bfd) ?
4120 tilegx64_plt0_entry : tilegx32_plt0_entry,
4121 PLT_HEADER_SIZE);
4122
4123 memcpy (splt->contents + splt->size
4124 - PLT_ENTRY_SIZE + PLT_HEADER_SIZE,
4125 ABI_64_P (output_bfd) ?
4126 tilegx64_plt_tail_entry : tilegx32_plt_tail_entry,
4127 PLT_TAIL_SIZE);
4128 /* Add padding so that the plt section is a multiple of its
4129 entry size. */
4130 pad_size = PLT_ENTRY_SIZE - PLT_HEADER_SIZE - PLT_TAIL_SIZE;
4131 memset (splt->contents + splt->size - pad_size, 0, pad_size);
4132
4133 elf_section_data (splt->output_section)->this_hdr.sh_entsize
4134 = PLT_ENTRY_SIZE;
4135 }
4136 }
4137
4138 if (htab->elf.sgotplt)
4139 {
4140 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
4141 {
4142 _bfd_error_handler
4143 (_("discarded output section: `%A'"), htab->elf.sgotplt);
4144 return FALSE;
4145 }
4146
4147 if (htab->elf.sgotplt->size > 0)
4148 {
4149 /* Write the first two entries in .got.plt, needed for the dynamic
4150 linker. */
4151 TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) -1,
4152 htab->elf.sgotplt->contents);
4153 TILEGX_ELF_PUT_WORD (htab, output_bfd, (bfd_vma) 0,
4154 htab->elf.sgotplt->contents
4155 + GOT_ENTRY_SIZE (htab));
4156
4157 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize =
4158 GOT_ENTRY_SIZE (htab);
4159 }
4160 }
4161
4162 if (htab->elf.sgot)
4163 {
4164 if (htab->elf.sgot->size > 0)
4165 {
4166 /* Set the first entry in the global offset table to the address of
4167 the dynamic section. */
4168 bfd_vma val = (sdyn ?
4169 sdyn->output_section->vma + sdyn->output_offset :
4170 0);
4171 TILEGX_ELF_PUT_WORD (htab, output_bfd, val,
4172 htab->elf.sgot->contents);
4173
4174 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize =
4175 GOT_ENTRY_SIZE (htab);
4176 }
4177 }
4178
4179 return TRUE;
4180 }
4181
4182 \f
4183
4184 /* Return address for Ith PLT stub in section PLT, for relocation REL
4185 or (bfd_vma) -1 if it should not be included. */
4186
4187 bfd_vma
4188 tilegx_elf_plt_sym_val (bfd_vma i, const asection *plt,
4189 const arelent *rel ATTRIBUTE_UNUSED)
4190 {
4191 return plt->vma + PLT_HEADER_SIZE + i * PLT_ENTRY_SIZE;
4192 }
4193
4194 enum elf_reloc_type_class
4195 tilegx_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4196 const asection *rel_sec ATTRIBUTE_UNUSED,
4197 const Elf_Internal_Rela *rela)
4198 {
4199 switch ((int) TILEGX_ELF_R_TYPE (rela->r_info))
4200 {
4201 case R_TILEGX_RELATIVE:
4202 return reloc_class_relative;
4203 case R_TILEGX_JMP_SLOT:
4204 return reloc_class_plt;
4205 case R_TILEGX_COPY:
4206 return reloc_class_copy;
4207 default:
4208 return reloc_class_normal;
4209 }
4210 }
4211
4212 int
4213 tilegx_additional_program_headers (bfd *abfd,
4214 struct bfd_link_info *info ATTRIBUTE_UNUSED)
4215 {
4216 /* Each .intrpt section specified by the user adds another PT_LOAD
4217 header since the sections are discontiguous. */
4218 static const char intrpt_sections[4][9] =
4219 {
4220 ".intrpt0", ".intrpt1", ".intrpt2", ".intrpt3"
4221 };
4222 int count = 0;
4223 int i;
4224
4225 for (i = 0; i < 4; i++)
4226 {
4227 asection *sec = bfd_get_section_by_name (abfd, intrpt_sections[i]);
4228 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
4229 ++count;
4230 }
4231
4232 /* Add four "padding" headers in to leave room in case a custom linker
4233 script does something fancy. Otherwise ld complains that it ran
4234 out of program headers and refuses to link. */
4235 count += 4;
4236
4237 return count;
4238 }
4239
4240
4241 bfd_boolean
4242 _bfd_tilegx_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4243 {
4244 bfd *obfd = info->output_bfd;
4245 const char *targ1 = bfd_get_target (ibfd);
4246 const char *targ2 = bfd_get_target (obfd);
4247
4248 if (strcmp (targ1, targ2) != 0)
4249 {
4250 _bfd_error_handler
4251 /* xgettext:c-format */
4252 (_("%B: Cannot link together %s and %s objects."),
4253 ibfd, targ1, targ2);
4254 bfd_set_error (bfd_error_bad_value);
4255 return FALSE;
4256 }
4257
4258 return TRUE;
4259 }
GDB Binutils - Deliverables
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