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readonly_dynrelocs
[deliverable/binutils-gdb.git] / bfd / elf32-tilepro.c
1 /* TILEPro-specific support for 32-bit 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/tilepro.h"
26 #include "opcode/tilepro.h"
27 #include "libiberty.h"
28 #include "elf32-tilepro.h"
29
30 #define TILEPRO_BYTES_PER_WORD 4
31
32 static reloc_howto_type tilepro_elf_howto_table [] =
33 {
34 /* This reloc does nothing. */
35 HOWTO (R_TILEPRO_NONE, /* type */
36 0, /* rightshift */
37 3, /* size (0 = byte, 1 = short, 2 = long) */
38 0, /* bitsize */
39 FALSE, /* pc_relative */
40 0, /* bitpos */
41 complain_overflow_dont, /* complain_on_overflow */
42 bfd_elf_generic_reloc, /* special_function */
43 "R_TILEPRO_NONE", /* name */
44 FALSE, /* partial_inplace */
45 0, /* src_mask */
46 0, /* dst_mask */
47 FALSE), /* pcrel_offset */
48
49 /* A 32 bit absolute relocation. */
50 HOWTO (R_TILEPRO_32, /* type */
51 0, /* rightshift */
52 2, /* size (0 = byte, 1 = short, 2 = long) */
53 32, /* bitsize */
54 FALSE, /* pc_relative */
55 0, /* bitpos */
56 complain_overflow_dont, /* complain_on_overflow */
57 bfd_elf_generic_reloc, /* special_function */
58 "R_TILEPRO_32", /* name */
59 FALSE, /* partial_inplace */
60 0, /* src_mask */
61 0xffffffff, /* dst_mask */
62 FALSE), /* pcrel_offset */
63
64 /* A 16 bit absolute relocation. */
65 HOWTO (R_TILEPRO_16, /* type */
66 0, /* rightshift */
67 1, /* size (0 = byte, 1 = short, 2 = long) */
68 16, /* bitsize */
69 FALSE, /* pc_relative */
70 0, /* bitpos */
71 complain_overflow_bitfield, /* complain_on_overflow */
72 bfd_elf_generic_reloc, /* special_function */
73 "R_TILEPRO_16", /* name */
74 FALSE, /* partial_inplace */
75 0, /* src_mask */
76 0xffff, /* dst_mask */
77 FALSE), /* pcrel_offset */
78
79 /* An 8 bit absolute relocation. */
80 HOWTO (R_TILEPRO_8, /* type */
81 0, /* rightshift */
82 0, /* size (0 = byte, 1 = short, 2 = long) */
83 8, /* bitsize */
84 FALSE, /* pc_relative */
85 0, /* bitpos */
86 complain_overflow_unsigned, /* complain_on_overflow */
87 bfd_elf_generic_reloc, /* special_function */
88 "R_TILEPRO_8", /* name */
89 FALSE, /* partial_inplace */
90 0, /* src_mask */
91 0xff, /* dst_mask */
92 FALSE), /* pcrel_offset */
93
94 /* A 32 bit pc-relative relocation. */
95 HOWTO (R_TILEPRO_32_PCREL,/* type */
96 0, /* rightshift */
97 2, /* size (0 = byte, 1 = short, 2 = long) */
98 32, /* bitsize */
99 TRUE, /* pc_relative */
100 0, /* bitpos */
101 complain_overflow_dont, /* complain_on_overflow */
102 bfd_elf_generic_reloc, /* special_function */
103 "R_TILEPRO_32_PCREL", /* name */
104 FALSE, /* partial_inplace */
105 0, /* src_mask */
106 0xffffffff, /* dst_mask */
107 TRUE), /* pcrel_offset */
108
109 /* A 16 bit pc-relative relocation. */
110 HOWTO (R_TILEPRO_16_PCREL,/* type */
111 0, /* rightshift */
112 1, /* size (0 = byte, 1 = short, 2 = long) */
113 16, /* bitsize */
114 TRUE, /* pc_relative */
115 0, /* bitpos */
116 complain_overflow_signed, /* complain_on_overflow */
117 bfd_elf_generic_reloc, /* special_function */
118 "R_TILEPRO_16_PCREL", /* name */
119 FALSE, /* partial_inplace */
120 0, /* src_mask */
121 0xffff, /* dst_mask */
122 TRUE), /* pcrel_offset */
123
124 /* An 8 bit pc-relative relocation. */
125 HOWTO (R_TILEPRO_8_PCREL, /* type */
126 0, /* rightshift */
127 0, /* size (0 = byte, 1 = short, 2 = long) */
128 8, /* bitsize */
129 TRUE, /* pc_relative */
130 0, /* bitpos */
131 complain_overflow_signed, /* complain_on_overflow */
132 bfd_elf_generic_reloc, /* special_function */
133 "R_TILEPRO_8_PCREL",/* name */
134 FALSE, /* partial_inplace */
135 0, /* src_mask */
136 0xff, /* dst_mask */
137 TRUE), /* pcrel_offset */
138
139 /* A 16 bit relocation without overflow. */
140 HOWTO (R_TILEPRO_LO16, /* type */
141 0, /* rightshift */
142 1, /* size (0 = byte, 1 = short, 2 = long) */
143 16, /* bitsize */
144 FALSE, /* pc_relative */
145 0, /* bitpos */
146 complain_overflow_dont,/* complain_on_overflow */
147 bfd_elf_generic_reloc, /* special_function */
148 "R_TILEPRO_LO16", /* name */
149 FALSE, /* partial_inplace */
150 0, /* src_mask */
151 0xffff, /* dst_mask */
152 FALSE), /* pcrel_offset */
153
154 /* The high order 16 bits of an address. */
155 HOWTO (R_TILEPRO_HI16, /* type */
156 16, /* rightshift */
157 1, /* size (0 = byte, 1 = short, 2 = long) */
158 16, /* bitsize */
159 FALSE, /* pc_relative */
160 0, /* bitpos */
161 complain_overflow_dont, /* complain_on_overflow */
162 bfd_elf_generic_reloc, /* special_function */
163 "R_TILEPRO_HI16", /* name */
164 FALSE, /* partial_inplace */
165 0, /* src_mask */
166 0xffff, /* dst_mask */
167 FALSE), /* pcrel_offset */
168
169 /* The high order 16 bits of an address, plus 1 if the contents of
170 the low 16 bits, treated as a signed number, is negative. */
171 HOWTO (R_TILEPRO_HA16, /* type */
172 16, /* rightshift */
173 1, /* size (0 = byte, 1 = short, 2 = long) */
174 16, /* bitsize */
175 FALSE, /* pc_relative */
176 0, /* bitpos */
177 complain_overflow_dont, /* complain_on_overflow */
178 bfd_elf_generic_reloc, /* special_function */
179 "R_TILEPRO_HA16", /* name */
180 FALSE, /* partial_inplace */
181 0, /* src_mask */
182 0xffff, /* dst_mask */
183 FALSE), /* pcrel_offset */
184
185 HOWTO (R_TILEPRO_COPY, /* type */
186 0, /* rightshift */
187 0, /* size (0 = byte, 1 = short, 2 = long) */
188 0, /* bitsize */
189 FALSE, /* pc_relative */
190 0, /* bitpos */
191 complain_overflow_dont, /* complain_on_overflow */
192 bfd_elf_generic_reloc, /* special_function */
193 "R_TILEPRO_COPY", /* name */
194 FALSE, /* partial_inplace */
195 0, /* src_mask */
196 0, /* dst_mask */
197 TRUE), /* pcrel_offset */
198
199 HOWTO (R_TILEPRO_GLOB_DAT, /* type */
200 0, /* rightshift */
201 0, /* size (0 = byte, 1 = short, 2 = long) */
202 0, /* bitsize */
203 FALSE, /* pc_relative */
204 0, /* bitpos */
205 complain_overflow_dont, /* complain_on_overflow */
206 bfd_elf_generic_reloc, /* special_function */
207 "R_TILEPRO_GLOB_DAT", /* name */
208 FALSE, /* partial_inplace */
209 0, /* src_mask */
210 0, /* dst_mask */
211 TRUE), /* pcrel_offset */
212
213 HOWTO (R_TILEPRO_JMP_SLOT, /* type */
214 0, /* rightshift */
215 0, /* size (0 = byte, 1 = short, 2 = long) */
216 0, /* bitsize */
217 FALSE, /* pc_relative */
218 0, /* bitpos */
219 complain_overflow_dont, /* complain_on_overflow */
220 bfd_elf_generic_reloc, /* special_function */
221 "R_TILEPRO_JMP_SLOT", /* name */
222 FALSE, /* partial_inplace */
223 0, /* src_mask */
224 0, /* dst_mask */
225 TRUE), /* pcrel_offset */
226
227 HOWTO (R_TILEPRO_RELATIVE, /* type */
228 0, /* rightshift */
229 0, /* size (0 = byte, 1 = short, 2 = long) */
230 0, /* bitsize */
231 FALSE, /* pc_relative */
232 0, /* bitpos */
233 complain_overflow_dont, /* complain_on_overflow */
234 bfd_elf_generic_reloc, /* special_function */
235 "R_TILEPRO_RELATIVE", /* name */
236 FALSE, /* partial_inplace */
237 0, /* src_mask */
238 0, /* dst_mask */
239 TRUE), /* pcrel_offset */
240
241 HOWTO (R_TILEPRO_BROFF_X1, /* type */
242 TILEPRO_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
243 2, /* size (0 = byte, 1 = short, 2 = long) */
244 17, /* bitsize */
245 TRUE, /* pc_relative */
246 0, /* bitpos */
247 complain_overflow_signed, /* complain_on_overflow */
248 bfd_elf_generic_reloc, /* special_function */
249 "R_TILEPRO_BROFF_X1", /* name */
250 FALSE, /* partial_inplace */
251 0, /* src_mask */
252 -1, /* dst_mask */
253 TRUE), /* pcrel_offset */
254
255 HOWTO (R_TILEPRO_JOFFLONG_X1, /* type */
256 TILEPRO_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
257 2, /* size (0 = byte, 1 = short, 2 = long) */
258 29, /* bitsize */
259 TRUE, /* pc_relative */
260 0, /* bitpos */
261 complain_overflow_signed,/* complain_on_overflow */
262 bfd_elf_generic_reloc, /* special_function */
263 "R_TILEPRO_JOFFLONG_X1", /* name */
264 FALSE, /* partial_inplace */
265 0, /* src_mask */
266 -1, /* dst_mask */
267 TRUE), /* pcrel_offset */
268
269 HOWTO (R_TILEPRO_JOFFLONG_X1_PLT, /* type */
270 TILEPRO_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
271 2, /* size (0 = byte, 1 = short, 2 = long) */
272 29, /* bitsize */
273 TRUE, /* pc_relative */
274 0, /* bitpos */
275 complain_overflow_signed,/* complain_on_overflow */
276 bfd_elf_generic_reloc, /* special_function */
277 "R_TILEPRO_JOFFLONG_X1_PLT", /* name */
278 FALSE, /* partial_inplace */
279 0, /* src_mask */
280 -1, /* dst_mask */
281 TRUE), /* pcrel_offset */
282
283 #define TILEPRO_IMM_HOWTO(name, size, bitsize) \
284 HOWTO (name, 0, size, bitsize, FALSE, 0, \
285 complain_overflow_signed, bfd_elf_generic_reloc, \
286 #name, FALSE, 0, -1, FALSE)
287
288 #define TILEPRO_UIMM_HOWTO(name, size, bitsize) \
289 HOWTO (name, 0, size, bitsize, FALSE, 0, \
290 complain_overflow_unsigned, bfd_elf_generic_reloc, \
291 #name, FALSE, 0, -1, FALSE)
292
293 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_X0, 0, 8),
294 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_Y0, 0, 8),
295 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_X1, 0, 8),
296 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_Y1, 0, 8),
297 TILEPRO_UIMM_HOWTO(R_TILEPRO_MT_IMM15_X1, 1, 15),
298 TILEPRO_UIMM_HOWTO(R_TILEPRO_MF_IMM15_X1, 1, 15),
299 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM16_X0, 1, 16),
300 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM16_X1, 1, 16),
301
302 #define TILEPRO_IMM16_HOWTO(name, rshift) \
303 HOWTO (name, rshift, 1, 16, FALSE, 0, \
304 complain_overflow_dont, bfd_elf_generic_reloc, \
305 #name, FALSE, 0, 0xffff, FALSE)
306
307 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_LO, 0),
308 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_LO, 0),
309 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_HI, 16),
310 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_HI, 16),
311 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_HA, 16),
312 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_HA, 16),
313
314 /* PC-relative offsets. */
315
316 HOWTO (R_TILEPRO_IMM16_X0_PCREL, /* type */
317 0, /* rightshift */
318 1, /* size (0 = byte, 1 = short, 2 = long) */
319 16, /* bitsize */
320 TRUE, /* pc_relative */
321 0, /* bitpos */
322 complain_overflow_signed, /* complain_on_overflow */
323 bfd_elf_generic_reloc, /* special_function */
324 "R_TILEPRO_IMM16_X0_PCREL",/* name */
325 FALSE, /* partial_inplace */
326 0, /* src_mask */
327 -1, /* dst_mask */
328 TRUE), /* pcrel_offset */
329
330 HOWTO (R_TILEPRO_IMM16_X1_PCREL, /* type */
331 0, /* rightshift */
332 1, /* size (0 = byte, 1 = short, 2 = long) */
333 16, /* bitsize */
334 TRUE, /* pc_relative */
335 0, /* bitpos */
336 complain_overflow_signed, /* complain_on_overflow */
337 bfd_elf_generic_reloc, /* special_function */
338 "R_TILEPRO_IMM16_X1_PCREL",/* name */
339 FALSE, /* partial_inplace */
340 0, /* src_mask */
341 -1, /* dst_mask */
342 TRUE), /* pcrel_offset */
343
344 #define TILEPRO_IMM16_HOWTO_PCREL(name, rshift) \
345 HOWTO (name, rshift, 1, 16, TRUE, 0, \
346 complain_overflow_dont, bfd_elf_generic_reloc, \
347 #name, FALSE, 0, 0xffff, TRUE)
348
349 TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X0_LO_PCREL, 0),
350 TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X1_LO_PCREL, 0),
351 TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X0_HI_PCREL, 16),
352 TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X1_HI_PCREL, 16),
353 TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X0_HA_PCREL, 16),
354 TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X1_HA_PCREL, 16),
355
356 /* Byte offset into GOT for a particular symbol. */
357 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM16_X0_GOT, 1, 16),
358 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM16_X1_GOT, 1, 16),
359 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_GOT_LO, 0),
360 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_GOT_LO, 0),
361 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_GOT_HI, 16),
362 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_GOT_HI, 16),
363 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_GOT_HA, 16),
364 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_GOT_HA, 16),
365
366 TILEPRO_UIMM_HOWTO(R_TILEPRO_MMSTART_X0, 0, 5),
367 TILEPRO_UIMM_HOWTO(R_TILEPRO_MMEND_X0, 0, 5),
368 TILEPRO_UIMM_HOWTO(R_TILEPRO_MMSTART_X1, 0, 5),
369 TILEPRO_UIMM_HOWTO(R_TILEPRO_MMEND_X1, 0, 5),
370
371 TILEPRO_UIMM_HOWTO(R_TILEPRO_SHAMT_X0, 0, 5),
372 TILEPRO_UIMM_HOWTO(R_TILEPRO_SHAMT_X1, 0, 5),
373 TILEPRO_UIMM_HOWTO(R_TILEPRO_SHAMT_Y0, 0, 5),
374 TILEPRO_UIMM_HOWTO(R_TILEPRO_SHAMT_Y1, 0, 5),
375
376 TILEPRO_IMM_HOWTO(R_TILEPRO_DEST_IMM8_X1, 0, 8),
377
378 /* These relocs are currently not defined. */
379 EMPTY_HOWTO (56),
380 EMPTY_HOWTO (57),
381 EMPTY_HOWTO (58),
382 EMPTY_HOWTO (59),
383
384 HOWTO (R_TILEPRO_TLS_GD_CALL, /* type */
385 TILEPRO_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
386 2, /* size (0 = byte, 1 = short, 2 = long) */
387 29, /* bitsize */
388 TRUE, /* pc_relative */
389 0, /* bitpos */
390 complain_overflow_signed,/* complain_on_overflow */
391 bfd_elf_generic_reloc, /* special_function */
392 "R_TILEPRO_TLS_GD_CALL", /* name */
393 FALSE, /* partial_inplace */
394 0, /* src_mask */
395 -1, /* dst_mask */
396 TRUE), /* pcrel_offset */
397
398 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_X0_TLS_GD_ADD, 0, 8),
399 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_X1_TLS_GD_ADD, 0, 8),
400 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_Y0_TLS_GD_ADD, 0, 8),
401 TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_Y1_TLS_GD_ADD, 0, 8),
402 TILEPRO_IMM_HOWTO(R_TILEPRO_TLS_IE_LOAD, 0, 8),
403
404 /* Offsets into the GOT of TLS Descriptors. */
405
406 HOWTO (R_TILEPRO_IMM16_X0_TLS_GD,/* type */
407 0, /* rightshift */
408 1, /* size (0 = byte, 1 = short, 2 = long) */
409 16, /* bitsize */
410 FALSE, /* pc_relative */
411 0, /* bitpos */
412 complain_overflow_signed, /* complain_on_overflow */
413 bfd_elf_generic_reloc, /* special_function */
414 "R_TILEPRO_IMM16_X0_TLS_GD",/* name */
415 FALSE, /* partial_inplace */
416 0, /* src_mask */
417 0xffff, /* dst_mask */
418 FALSE), /* pcrel_offset */
419
420 HOWTO (R_TILEPRO_IMM16_X1_TLS_GD,/* type */
421 0, /* rightshift */
422 1, /* size (0 = byte, 1 = short, 2 = long) */
423 16, /* bitsize */
424 FALSE, /* pc_relative */
425 0, /* bitpos */
426 complain_overflow_signed, /* complain_on_overflow */
427 bfd_elf_generic_reloc, /* special_function */
428 "R_TILEPRO_IMM16_X1_TLS_GD",/* name */
429 FALSE, /* partial_inplace */
430 0, /* src_mask */
431 0xffff, /* dst_mask */
432 FALSE), /* pcrel_offset */
433
434 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_GD_LO, 0),
435 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_GD_LO, 0),
436 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_GD_HI, 16),
437 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_GD_HI, 16),
438 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_GD_HA, 16),
439 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_GD_HA, 16),
440
441 /* Offsets into the GOT of TLS Descriptors. */
442
443 HOWTO (R_TILEPRO_IMM16_X0_TLS_IE,/* type */
444 0, /* rightshift */
445 1, /* size (0 = byte, 1 = short, 2 = long) */
446 16, /* bitsize */
447 FALSE, /* pc_relative */
448 0, /* bitpos */
449 complain_overflow_signed, /* complain_on_overflow */
450 bfd_elf_generic_reloc, /* special_function */
451 "R_TILEPRO_IMM16_X0_TLS_IE",/* name */
452 FALSE, /* partial_inplace */
453 0, /* src_mask */
454 -1, /* dst_mask */
455 TRUE), /* pcrel_offset */
456
457 HOWTO (R_TILEPRO_IMM16_X1_TLS_IE,/* type */
458 0, /* rightshift */
459 1, /* size (0 = byte, 1 = short, 2 = long) */
460 16, /* bitsize */
461 FALSE, /* pc_relative */
462 0, /* bitpos */
463 complain_overflow_signed, /* complain_on_overflow */
464 bfd_elf_generic_reloc, /* special_function */
465 "R_TILEPRO_IMM16_X1_TLS_IE",/* name */
466 FALSE, /* partial_inplace */
467 0, /* src_mask */
468 -1, /* dst_mask */
469 TRUE), /* pcrel_offset */
470
471 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_IE_LO, 0),
472 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_IE_LO, 0),
473 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_IE_HI, 16),
474 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_IE_HI, 16),
475 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_IE_HA, 16),
476 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_IE_HA, 16),
477
478 /* These are common with the Solaris TLS implementation. */
479 HOWTO(R_TILEPRO_TLS_DTPMOD32, 0, 0, 0, FALSE, 0, complain_overflow_dont,
480 bfd_elf_generic_reloc, "R_TILEPRO_TLS_DTPMOD32",
481 FALSE, 0, 0, TRUE),
482 HOWTO(R_TILEPRO_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
483 bfd_elf_generic_reloc, "R_TILEPRO_TLS_DTPOFF32",
484 FALSE, 0, 0xFFFFFFFF, TRUE),
485 HOWTO(R_TILEPRO_TLS_TPOFF32, 0, 0, 0, FALSE, 0, complain_overflow_dont,
486 bfd_elf_generic_reloc, "R_TILEPRO_TLS_TPOFF32",
487 FALSE, 0, 0, TRUE),
488
489 HOWTO (R_TILEPRO_IMM16_X0_TLS_LE,/* type */
490 0, /* rightshift */
491 1, /* size (0 = byte, 1 = short, 2 = long) */
492 16, /* bitsize */
493 FALSE, /* pc_relative */
494 0, /* bitpos */
495 complain_overflow_signed, /* complain_on_overflow */
496 bfd_elf_generic_reloc, /* special_function */
497 "R_TILEPRO_IMM16_X0_TLS_LE",/* name */
498 FALSE, /* partial_inplace */
499 0, /* src_mask */
500 -1, /* dst_mask */
501 TRUE), /* pcrel_offset */
502
503 HOWTO (R_TILEPRO_IMM16_X1_TLS_LE,/* type */
504 0, /* rightshift */
505 1, /* size (0 = byte, 1 = short, 2 = long) */
506 16, /* bitsize */
507 FALSE, /* pc_relative */
508 0, /* bitpos */
509 complain_overflow_signed, /* complain_on_overflow */
510 bfd_elf_generic_reloc, /* special_function */
511 "R_TILEPRO_IMM16_X1_TLS_LE",/* name */
512 FALSE, /* partial_inplace */
513 0, /* src_mask */
514 -1, /* dst_mask */
515 TRUE), /* pcrel_offset */
516
517 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_LE_LO, 0),
518 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_LE_LO, 0),
519 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_LE_HI, 16),
520 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_LE_HI, 16),
521 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_LE_HA, 16),
522 TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_LE_HA, 16),
523 };
524
525 static reloc_howto_type tilepro_elf_howto_table2 [] =
526 {
527 /* GNU extension to record C++ vtable hierarchy */
528 HOWTO (R_TILEPRO_GNU_VTINHERIT, /* type */
529 0, /* rightshift */
530 2, /* size (0 = byte, 1 = short, 2 = long) */
531 0, /* bitsize */
532 FALSE, /* pc_relative */
533 0, /* bitpos */
534 complain_overflow_dont, /* complain_on_overflow */
535 NULL, /* special_function */
536 "R_TILEPRO_GNU_VTINHERIT", /* name */
537 FALSE, /* partial_inplace */
538 0, /* src_mask */
539 0, /* dst_mask */
540 FALSE), /* pcrel_offset */
541
542 /* GNU extension to record C++ vtable member usage */
543 HOWTO (R_TILEPRO_GNU_VTENTRY, /* type */
544 0, /* rightshift */
545 2, /* size (0 = byte, 1 = short, 2 = long) */
546 0, /* bitsize */
547 FALSE, /* pc_relative */
548 0, /* bitpos */
549 complain_overflow_dont, /* complain_on_overflow */
550 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
551 "R_TILEPRO_GNU_VTENTRY", /* name */
552 FALSE, /* partial_inplace */
553 0, /* src_mask */
554 0, /* dst_mask */
555 FALSE), /* pcrel_offset */
556
557 };
558 \f
559 /* Map BFD reloc types to TILEPRO ELF reloc types. */
560
561 typedef struct tilepro_reloc_map
562 {
563 bfd_reloc_code_real_type bfd_reloc_val;
564 unsigned int tilepro_reloc_val;
565 reloc_howto_type * table;
566 } reloc_map;
567
568 static const reloc_map tilepro_reloc_map [] =
569 {
570 #define TH_REMAP(bfd, tilepro) \
571 { bfd, tilepro, tilepro_elf_howto_table },
572
573 /* Standard relocations. */
574 TH_REMAP (BFD_RELOC_NONE, R_TILEPRO_NONE)
575 TH_REMAP (BFD_RELOC_32, R_TILEPRO_32)
576 TH_REMAP (BFD_RELOC_16, R_TILEPRO_16)
577 TH_REMAP (BFD_RELOC_8, R_TILEPRO_8)
578 TH_REMAP (BFD_RELOC_32_PCREL, R_TILEPRO_32_PCREL)
579 TH_REMAP (BFD_RELOC_16_PCREL, R_TILEPRO_16_PCREL)
580 TH_REMAP (BFD_RELOC_8_PCREL, R_TILEPRO_8_PCREL)
581 TH_REMAP (BFD_RELOC_LO16, R_TILEPRO_LO16)
582 TH_REMAP (BFD_RELOC_HI16, R_TILEPRO_HI16)
583 TH_REMAP (BFD_RELOC_HI16_S, R_TILEPRO_HA16)
584
585 /* Custom relocations. */
586 TH_REMAP (BFD_RELOC_TILEPRO_COPY, R_TILEPRO_COPY)
587 TH_REMAP (BFD_RELOC_TILEPRO_GLOB_DAT, R_TILEPRO_GLOB_DAT)
588 TH_REMAP (BFD_RELOC_TILEPRO_JMP_SLOT, R_TILEPRO_JMP_SLOT)
589 TH_REMAP (BFD_RELOC_TILEPRO_RELATIVE, R_TILEPRO_RELATIVE)
590 TH_REMAP (BFD_RELOC_TILEPRO_BROFF_X1, R_TILEPRO_BROFF_X1)
591 TH_REMAP (BFD_RELOC_TILEPRO_JOFFLONG_X1, R_TILEPRO_JOFFLONG_X1)
592 TH_REMAP (BFD_RELOC_TILEPRO_JOFFLONG_X1_PLT, R_TILEPRO_JOFFLONG_X1_PLT)
593 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X0, R_TILEPRO_IMM8_X0)
594 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y0, R_TILEPRO_IMM8_Y0)
595 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X1, R_TILEPRO_IMM8_X1)
596 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y1, R_TILEPRO_IMM8_Y1)
597 TH_REMAP (BFD_RELOC_TILEPRO_DEST_IMM8_X1, R_TILEPRO_DEST_IMM8_X1)
598 TH_REMAP (BFD_RELOC_TILEPRO_MT_IMM15_X1, R_TILEPRO_MT_IMM15_X1)
599 TH_REMAP (BFD_RELOC_TILEPRO_MF_IMM15_X1, R_TILEPRO_MF_IMM15_X1)
600 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0, R_TILEPRO_IMM16_X0)
601 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1, R_TILEPRO_IMM16_X1)
602 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_LO, R_TILEPRO_IMM16_X0_LO)
603 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_LO, R_TILEPRO_IMM16_X1_LO)
604 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HI, R_TILEPRO_IMM16_X0_HI)
605 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HI, R_TILEPRO_IMM16_X1_HI)
606 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HA, R_TILEPRO_IMM16_X0_HA)
607 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HA, R_TILEPRO_IMM16_X1_HA)
608
609 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_PCREL, R_TILEPRO_IMM16_X0_PCREL)
610 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_PCREL, R_TILEPRO_IMM16_X1_PCREL)
611 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_LO_PCREL, R_TILEPRO_IMM16_X0_LO_PCREL)
612 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_LO_PCREL, R_TILEPRO_IMM16_X1_LO_PCREL)
613 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HI_PCREL, R_TILEPRO_IMM16_X0_HI_PCREL)
614 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HI_PCREL, R_TILEPRO_IMM16_X1_HI_PCREL)
615 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HA_PCREL, R_TILEPRO_IMM16_X0_HA_PCREL)
616 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HA_PCREL, R_TILEPRO_IMM16_X1_HA_PCREL)
617
618 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT, R_TILEPRO_IMM16_X0_GOT)
619 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT, R_TILEPRO_IMM16_X1_GOT)
620 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT_LO, R_TILEPRO_IMM16_X0_GOT_LO)
621 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT_LO, R_TILEPRO_IMM16_X1_GOT_LO)
622 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT_HI, R_TILEPRO_IMM16_X0_GOT_HI)
623 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT_HI, R_TILEPRO_IMM16_X1_GOT_HI)
624 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT_HA, R_TILEPRO_IMM16_X0_GOT_HA)
625 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT_HA, R_TILEPRO_IMM16_X1_GOT_HA)
626
627 TH_REMAP (BFD_RELOC_TILEPRO_MMSTART_X0, R_TILEPRO_MMSTART_X0)
628 TH_REMAP (BFD_RELOC_TILEPRO_MMEND_X0, R_TILEPRO_MMEND_X0)
629 TH_REMAP (BFD_RELOC_TILEPRO_MMSTART_X1, R_TILEPRO_MMSTART_X1)
630 TH_REMAP (BFD_RELOC_TILEPRO_MMEND_X1, R_TILEPRO_MMEND_X1)
631 TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_X0, R_TILEPRO_SHAMT_X0)
632 TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_X1, R_TILEPRO_SHAMT_X1)
633 TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_Y0, R_TILEPRO_SHAMT_Y0)
634 TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_Y1, R_TILEPRO_SHAMT_Y1)
635
636 TH_REMAP (BFD_RELOC_TILEPRO_TLS_GD_CALL, R_TILEPRO_TLS_GD_CALL)
637 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X0_TLS_GD_ADD, R_TILEPRO_IMM8_X0_TLS_GD_ADD)
638 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X1_TLS_GD_ADD, R_TILEPRO_IMM8_X1_TLS_GD_ADD)
639 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y0_TLS_GD_ADD, R_TILEPRO_IMM8_Y0_TLS_GD_ADD)
640 TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y1_TLS_GD_ADD, R_TILEPRO_IMM8_Y1_TLS_GD_ADD)
641 TH_REMAP (BFD_RELOC_TILEPRO_TLS_IE_LOAD, R_TILEPRO_TLS_IE_LOAD)
642
643 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD, R_TILEPRO_IMM16_X0_TLS_GD)
644 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD, R_TILEPRO_IMM16_X1_TLS_GD)
645 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD_LO, R_TILEPRO_IMM16_X0_TLS_GD_LO)
646 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD_LO, R_TILEPRO_IMM16_X1_TLS_GD_LO)
647 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD_HI, R_TILEPRO_IMM16_X0_TLS_GD_HI)
648 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD_HI, R_TILEPRO_IMM16_X1_TLS_GD_HI)
649 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD_HA, R_TILEPRO_IMM16_X0_TLS_GD_HA)
650 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD_HA, R_TILEPRO_IMM16_X1_TLS_GD_HA)
651
652 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE, R_TILEPRO_IMM16_X0_TLS_IE)
653 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE, R_TILEPRO_IMM16_X1_TLS_IE)
654 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE_LO, R_TILEPRO_IMM16_X0_TLS_IE_LO)
655 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE_LO, R_TILEPRO_IMM16_X1_TLS_IE_LO)
656 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE_HI, R_TILEPRO_IMM16_X0_TLS_IE_HI)
657 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE_HI, R_TILEPRO_IMM16_X1_TLS_IE_HI)
658 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE_HA, R_TILEPRO_IMM16_X0_TLS_IE_HA)
659 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE_HA, R_TILEPRO_IMM16_X1_TLS_IE_HA)
660
661 TH_REMAP (BFD_RELOC_TILEPRO_TLS_DTPMOD32, R_TILEPRO_TLS_DTPMOD32)
662 TH_REMAP (BFD_RELOC_TILEPRO_TLS_DTPOFF32, R_TILEPRO_TLS_DTPOFF32)
663 TH_REMAP (BFD_RELOC_TILEPRO_TLS_TPOFF32, R_TILEPRO_TLS_TPOFF32)
664
665 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE, R_TILEPRO_IMM16_X0_TLS_LE)
666 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE, R_TILEPRO_IMM16_X1_TLS_LE)
667 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_LO, R_TILEPRO_IMM16_X0_TLS_LE_LO)
668 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_LO, R_TILEPRO_IMM16_X1_TLS_LE_LO)
669 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_HI, R_TILEPRO_IMM16_X0_TLS_LE_HI)
670 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_HI, R_TILEPRO_IMM16_X1_TLS_LE_HI)
671 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_HA, R_TILEPRO_IMM16_X0_TLS_LE_HA)
672 TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_HA, R_TILEPRO_IMM16_X1_TLS_LE_HA)
673
674 #undef TH_REMAP
675
676 { BFD_RELOC_VTABLE_INHERIT, R_TILEPRO_GNU_VTINHERIT, tilepro_elf_howto_table2 },
677 { BFD_RELOC_VTABLE_ENTRY, R_TILEPRO_GNU_VTENTRY, tilepro_elf_howto_table2 },
678 };
679
680
681
682 /* The TILEPro linker needs to keep track of the number of relocs that it
683 decides to copy as dynamic relocs in check_relocs for each symbol.
684 This is so that it can later discard them if they are found to be
685 unnecessary. We store the information in a field extending the
686 regular ELF linker hash table. */
687
688 struct tilepro_elf_dyn_relocs
689 {
690 struct tilepro_elf_dyn_relocs *next;
691
692 /* The input section of the reloc. */
693 asection *sec;
694
695 /* Total number of relocs copied for the input section. */
696 bfd_size_type count;
697
698 /* Number of pc-relative relocs copied for the input section. */
699 bfd_size_type pc_count;
700 };
701
702 /* TILEPRO ELF linker hash entry. */
703
704 struct tilepro_elf_link_hash_entry
705 {
706 struct elf_link_hash_entry elf;
707
708 /* Track dynamic relocs copied for this symbol. */
709 struct tilepro_elf_dyn_relocs *dyn_relocs;
710
711 #define GOT_UNKNOWN 0
712 #define GOT_NORMAL 1
713 #define GOT_TLS_GD 2
714 #define GOT_TLS_IE 4
715 unsigned char tls_type;
716 };
717
718 #define tilepro_elf_hash_entry(ent) \
719 ((struct tilepro_elf_link_hash_entry *)(ent))
720
721 struct _bfd_tilepro_elf_obj_tdata
722 {
723 struct elf_obj_tdata root;
724
725 /* tls_type for each local got entry. */
726 char *local_got_tls_type;
727 };
728
729 #define _bfd_tilepro_elf_tdata(abfd) \
730 ((struct _bfd_tilepro_elf_obj_tdata *) (abfd)->tdata.any)
731
732 #define _bfd_tilepro_elf_local_got_tls_type(abfd) \
733 (_bfd_tilepro_elf_tdata (abfd)->local_got_tls_type)
734
735 #define is_tilepro_elf(bfd) \
736 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
737 && elf_tdata (bfd) != NULL \
738 && elf_object_id (bfd) == TILEPRO_ELF_DATA)
739
740 /* Allocate TILEPro ELF private object data. */
741
742 static bfd_boolean
743 tilepro_elf_mkobject (bfd *abfd)
744 {
745 return bfd_elf_allocate_object (abfd,
746 sizeof (struct _bfd_tilepro_elf_obj_tdata),
747 TILEPRO_ELF_DATA);
748 }
749
750 #include "elf/common.h"
751 #include "elf/internal.h"
752
753 struct tilepro_elf_link_hash_table
754 {
755 struct elf_link_hash_table elf;
756
757 /* Small local sym to section mapping cache. */
758 struct sym_cache sym_cache;
759 };
760
761 /* Get the Tilepro ELF linker hash table from a link_info structure. */
762 #define tilepro_elf_hash_table(p) \
763 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
764 == TILEPRO_ELF_DATA \
765 ? ((struct tilepro_elf_link_hash_table *) ((p)->hash)) : NULL)
766
767 static reloc_howto_type *
768 tilepro_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
769 bfd_reloc_code_real_type code)
770 {
771 unsigned int i;
772
773 for (i = ARRAY_SIZE (tilepro_reloc_map); i--;)
774 {
775 const reloc_map * entry;
776
777 entry = tilepro_reloc_map + i;
778
779 if (entry->bfd_reloc_val == code)
780 return entry->table + (entry->tilepro_reloc_val
781 - entry->table[0].type);
782 }
783
784 return NULL;
785 }
786
787 static reloc_howto_type *
788 tilepro_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
789 const char *r_name)
790 {
791 unsigned int i;
792
793 for (i = 0;
794 i < (sizeof (tilepro_elf_howto_table)
795 / sizeof (tilepro_elf_howto_table[0]));
796 i++)
797 if (tilepro_elf_howto_table[i].name != NULL
798 && strcasecmp (tilepro_elf_howto_table[i].name, r_name) == 0)
799 return &tilepro_elf_howto_table[i];
800
801 return NULL;
802 }
803
804 /* Set the howto pointer for an TILEPro ELF reloc. */
805
806 static void
807 tilepro_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED,
808 arelent * cache_ptr,
809 Elf_Internal_Rela * dst)
810 {
811 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
812
813 if (r_type <= (unsigned int) R_TILEPRO_IMM16_X1_TLS_LE_HA)
814 cache_ptr->howto = &tilepro_elf_howto_table [r_type];
815 else if (r_type - R_TILEPRO_GNU_VTINHERIT
816 <= (unsigned int) R_TILEPRO_GNU_VTENTRY)
817 cache_ptr->howto
818 = &tilepro_elf_howto_table2 [r_type - R_TILEPRO_GNU_VTINHERIT];
819 else
820 abort ();
821 }
822
823 typedef tilepro_bundle_bits (*tilepro_create_func)(int);
824
825 static const tilepro_create_func reloc_to_create_func[] =
826 {
827 /* The first fourteen relocation types don't correspond to operands */
828 NULL,
829 NULL,
830 NULL,
831 NULL,
832 NULL,
833 NULL,
834 NULL,
835 NULL,
836 NULL,
837 NULL,
838 NULL,
839 NULL,
840 NULL,
841 NULL,
842
843 /* The remaining relocations are used for immediate operands */
844 create_BrOff_X1,
845 create_JOffLong_X1,
846 create_JOffLong_X1,
847 create_Imm8_X0,
848 create_Imm8_Y0,
849 create_Imm8_X1,
850 create_Imm8_Y1,
851 create_MT_Imm15_X1,
852 create_MF_Imm15_X1,
853 create_Imm16_X0,
854 create_Imm16_X1,
855 create_Imm16_X0,
856 create_Imm16_X1,
857 create_Imm16_X0,
858 create_Imm16_X1,
859 create_Imm16_X0,
860 create_Imm16_X1,
861 create_Imm16_X0,
862 create_Imm16_X1,
863 create_Imm16_X0,
864 create_Imm16_X1,
865 create_Imm16_X0,
866 create_Imm16_X1,
867 create_Imm16_X0,
868 create_Imm16_X1,
869 create_Imm16_X0,
870 create_Imm16_X1,
871 create_Imm16_X0,
872 create_Imm16_X1,
873 create_Imm16_X0,
874 create_Imm16_X1,
875 create_Imm16_X0,
876 create_Imm16_X1,
877 create_MMStart_X0,
878 create_MMEnd_X0,
879 create_MMStart_X1,
880 create_MMEnd_X1,
881 create_ShAmt_X0,
882 create_ShAmt_X1,
883 create_ShAmt_Y0,
884 create_ShAmt_Y1,
885
886 create_Dest_Imm8_X1,
887 NULL,
888 NULL,
889 NULL,
890 NULL,
891 NULL,
892 NULL,
893 NULL,
894 NULL,
895 NULL,
896 NULL,
897
898 create_Imm16_X0,
899 create_Imm16_X1,
900 create_Imm16_X0,
901 create_Imm16_X1,
902 create_Imm16_X0,
903 create_Imm16_X1,
904 create_Imm16_X0,
905 create_Imm16_X1,
906 create_Imm16_X0,
907 create_Imm16_X1,
908 create_Imm16_X0,
909 create_Imm16_X1,
910 create_Imm16_X0,
911 create_Imm16_X1,
912 create_Imm16_X0,
913 create_Imm16_X1,
914
915 NULL,
916 NULL,
917 NULL,
918
919 create_Imm16_X0,
920 create_Imm16_X1,
921 create_Imm16_X0,
922 create_Imm16_X1,
923 create_Imm16_X0,
924 create_Imm16_X1,
925 create_Imm16_X0,
926 create_Imm16_X1,
927 };
928
929 #define NELEMS(a) ((int) (sizeof (a) / sizeof ((a)[0])))
930
931 /* Support for core dump NOTE sections. */
932
933 static bfd_boolean
934 tilepro_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
935 {
936 int offset;
937 size_t size;
938
939 if (note->descsz != TILEPRO_PRSTATUS_SIZEOF)
940 return FALSE;
941
942 /* pr_cursig */
943 elf_tdata (abfd)->core->signal =
944 bfd_get_16 (abfd, note->descdata + TILEPRO_PRSTATUS_OFFSET_PR_CURSIG);
945
946 /* pr_pid */
947 elf_tdata (abfd)->core->pid =
948 bfd_get_32 (abfd, note->descdata + TILEPRO_PRSTATUS_OFFSET_PR_PID);
949
950 /* pr_reg */
951 offset = TILEPRO_PRSTATUS_OFFSET_PR_REG;
952 size = TILEPRO_GREGSET_T_SIZE;
953
954 /* Make a ".reg/999" section. */
955 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
956 size, note->descpos + offset);
957 }
958
959 static bfd_boolean
960 tilepro_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
961 {
962 if (note->descsz != TILEPRO_PRPSINFO_SIZEOF)
963 return FALSE;
964
965 elf_tdata (abfd)->core->program
966 = _bfd_elfcore_strndup (abfd,
967 note->descdata + TILEPRO_PRPSINFO_OFFSET_PR_FNAME,
968 16);
969 elf_tdata (abfd)->core->command
970 = _bfd_elfcore_strndup (abfd,
971 note->descdata + TILEPRO_PRPSINFO_OFFSET_PR_PSARGS,
972 ELF_PR_PSARGS_SIZE);
973
974
975 /* Note that for some reason, a spurious space is tacked
976 onto the end of the args in some (at least one anyway)
977 implementations, so strip it off if it exists. */
978 {
979 char *command = elf_tdata (abfd)->core->command;
980 int n = strlen (command);
981
982 if (0 < n && command[n - 1] == ' ')
983 command[n - 1] = '\0';
984 }
985
986 return TRUE;
987 }
988
989
990 static void
991 tilepro_elf_append_rela_32 (bfd *abfd, asection *s, Elf_Internal_Rela *rel)
992 {
993 Elf32_External_Rela *loc32;
994
995 loc32 = (Elf32_External_Rela *) s->contents;
996 loc32 += s->reloc_count++;
997 bfd_elf32_swap_reloca_out (abfd, rel, (bfd_byte *) loc32);
998 }
999
1000 /* PLT/GOT stuff */
1001
1002 /* The procedure linkage table starts with the following header:
1003
1004 {
1005 rli r29, r29, 16
1006 lwadd r28, r27, 4
1007 }
1008 lw r27, r27
1009 {
1010 info 10 ## SP not offset, return PC in LR
1011 jr r27
1012 }
1013
1014 Subsequent entries are the following, jumping to the header at the end:
1015
1016 lnk r28
1017 1:
1018 {
1019 auli r28, r28, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET>
1020 auli r27, r28, <_GLOBAL_OFFSET_TABLE_ - 1b>
1021 }
1022 {
1023 addli r28, r28, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET>
1024 addli r27, r27, <_GLOBAL_OFFSET_TABLE_ - 1b>
1025 }
1026 {
1027 auli r29, zero, MY_PLT_INDEX
1028 lw r28, r28
1029 }
1030 {
1031 info 10 ## SP not offset, return PC in LR
1032 jr r28
1033 }
1034
1035 We initially store MY_PLT_INDEX in the high bits so that we can use the all
1036 16 bits as an unsigned offset; if we use the low bits we would get an
1037 unwanted sign extension. The PLT header then rotates the index to get the
1038 right value, before calling the resolution routine. This computation can
1039 fit in unused bundle slots so it's free.
1040
1041 This code sequence lets the code at at the start of the PLT determine
1042 which PLT entry was executed by examining 'r29'.
1043
1044 Note that MY_PLT_INDEX skips over the header entries, so the first
1045 actual jump table entry has index zero.
1046 */
1047
1048 #define PLT_HEADER_SIZE_IN_BUNDLES 3
1049 #define PLT_ENTRY_SIZE_IN_BUNDLES 5
1050
1051 #define PLT_HEADER_SIZE \
1052 (PLT_HEADER_SIZE_IN_BUNDLES * TILEPRO_BUNDLE_SIZE_IN_BYTES)
1053 #define PLT_ENTRY_SIZE \
1054 (PLT_ENTRY_SIZE_IN_BUNDLES * TILEPRO_BUNDLE_SIZE_IN_BYTES)
1055
1056 /* The size in bytes of an entry in the global offset table. */
1057
1058 #define GOT_ENTRY_SIZE TILEPRO_BYTES_PER_WORD
1059
1060 #define GOTPLT_HEADER_SIZE (2 * GOT_ENTRY_SIZE)
1061
1062
1063 static const bfd_byte
1064 tilepro_plt0_entry[PLT_HEADER_SIZE] =
1065 {
1066 0x5d, 0x07, 0x03, 0x70,
1067 0x6e, 0x23, 0xd0, 0x30, /* { rli r29, r29, 16 ; lwadd r28, r27, 4 } */
1068 0x00, 0x50, 0xba, 0x6d,
1069 0x00, 0x08, 0x6d, 0xdc, /* { lw r27, r27 } */
1070 0xff, 0xaf, 0x10, 0x50,
1071 0x60, 0x03, 0x18, 0x08, /* { info 10 ; jr r27 } */
1072 };
1073
1074 static const bfd_byte
1075 tilepro_short_plt_entry[PLT_ENTRY_SIZE] =
1076 {
1077 0x00, 0x50, 0x16, 0x70,
1078 0x0e, 0x00, 0x1a, 0x08, /* { lnk r28 } */
1079 0x1c, 0x07, 0x00, 0xa0,
1080 0x8d, 0x03, 0x00, 0x18, /* { addli r28, r28, 0 ; addli r27, r28, 0 } */
1081 0xdd, 0x0f, 0x00, 0x30,
1082 0x8e, 0x73, 0x0b, 0x40, /* { auli r29, zero, 0 ; lw r28, r28 } */
1083 0xff, 0xaf, 0x10, 0x50,
1084 0x80, 0x03, 0x18, 0x08, /* { info 10 ; jr r28 } */
1085 0x00, 0x00, 0x00, 0x00,
1086 0x00, 0x00, 0x00, 0x00,
1087 };
1088
1089 static const bfd_byte
1090 tilepro_long_plt_entry[PLT_ENTRY_SIZE] =
1091 {
1092 0x00, 0x50, 0x16, 0x70,
1093 0x0e, 0x00, 0x1a, 0x08, /* { lnk r28 } */
1094 0x1c, 0x07, 0x00, 0xb0,
1095 0x8d, 0x03, 0x00, 0x20, /* { auli r28, r28, 0 ; auli r27, r28, 0 } */
1096 0x1c, 0x07, 0x00, 0xa0,
1097 0x6d, 0x03, 0x00, 0x18, /* { addli r28, r28, 0 ; addli r27, r27, 0 } */
1098 0xdd, 0x0f, 0x00, 0x30,
1099 0x8e, 0x73, 0x0b, 0x40, /* { auli r29, zero, 0 ; lw r28, r28 } */
1100 0xff, 0xaf, 0x10, 0x50,
1101 0x80, 0x03, 0x18, 0x08, /* { info 10 ; jr r28 } */
1102 };
1103
1104 static bfd_vma
1105 tilepro_ha16(bfd_vma vma)
1106 {
1107 return ((vma >> 16) + ((vma >> 15) & 1)) & 0xffff;
1108 }
1109
1110 static int
1111 tilepro_plt_entry_build (asection *splt, asection *sgotplt, bfd_vma offset,
1112 bfd_vma *r_offset)
1113 {
1114 int plt_index = (offset - PLT_ENTRY_SIZE) / PLT_ENTRY_SIZE;
1115 int got_offset = plt_index * GOT_ENTRY_SIZE + GOTPLT_HEADER_SIZE;
1116 tilepro_bundle_bits *pc;
1117
1118 /* Compute the distance from the got entry to the lnk. */
1119 bfd_signed_vma dist_got_entry = sgotplt->output_section->vma
1120 + sgotplt->output_offset
1121 + got_offset
1122 - splt->output_section->vma
1123 - splt->output_offset
1124 - offset
1125 - TILEPRO_BUNDLE_SIZE_IN_BYTES;
1126
1127 /* Compute the distance to GOTPLT[0]. */
1128 bfd_signed_vma dist_got0 = dist_got_entry - got_offset;
1129
1130 /* Check whether we can use the short plt entry with 16-bit offset. */
1131 bfd_boolean short_plt_entry =
1132 (dist_got_entry <= 0x7fff && dist_got0 >= -0x8000);
1133
1134 /* Copy the plt entry template. */
1135 memcpy (splt->contents + offset,
1136 short_plt_entry ? tilepro_short_plt_entry : tilepro_long_plt_entry,
1137 PLT_ENTRY_SIZE);
1138
1139 /* Write the immediate offsets. */
1140 pc = (tilepro_bundle_bits *)(splt->contents + offset);
1141 pc++;
1142
1143 if (!short_plt_entry)
1144 {
1145 /* { auli r28, r28, &GOTPLT[MY_GOT_INDEX] ; auli r27, r28, &GOTPLT[0] } */
1146 *pc++ |= create_Imm16_X0 (tilepro_ha16 (dist_got_entry))
1147 | create_Imm16_X1 (tilepro_ha16 (dist_got0));
1148 }
1149
1150 /* { addli r28, r28, &GOTPLT[MY_GOT_INDEX] ; addli r27, r28, &GOTPLT[0] } or
1151 { addli r28, r28, &GOTPLT[MY_GOT_INDEX] ; addli r27, r27, &GOTPLT[0] } */
1152 *pc++ |= create_Imm16_X0 (dist_got_entry)
1153 | create_Imm16_X1 (dist_got0);
1154
1155 /* { auli r29, zero, MY_PLT_INDEX ; lw r28, r28 } */
1156 *pc |= create_Imm16_X0 (plt_index);
1157
1158 /* Set the relocation offset. */
1159 *r_offset = got_offset;
1160
1161 return plt_index;
1162 }
1163
1164 #define TILEPRO_ELF_RELA_BYTES (sizeof(Elf32_External_Rela))
1165
1166
1167 /* Create an entry in an TILEPro ELF linker hash table. */
1168
1169 static struct bfd_hash_entry *
1170 link_hash_newfunc (struct bfd_hash_entry *entry,
1171 struct bfd_hash_table *table, const char *string)
1172 {
1173 /* Allocate the structure if it has not already been allocated by a
1174 subclass. */
1175 if (entry == NULL)
1176 {
1177 entry =
1178 bfd_hash_allocate (table,
1179 sizeof (struct tilepro_elf_link_hash_entry));
1180 if (entry == NULL)
1181 return entry;
1182 }
1183
1184 /* Call the allocation method of the superclass. */
1185 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1186 if (entry != NULL)
1187 {
1188 struct tilepro_elf_link_hash_entry *eh;
1189
1190 eh = (struct tilepro_elf_link_hash_entry *) entry;
1191 eh->dyn_relocs = NULL;
1192 eh->tls_type = GOT_UNKNOWN;
1193 }
1194
1195 return entry;
1196 }
1197
1198 /* Create a TILEPRO ELF linker hash table. */
1199
1200 static struct bfd_link_hash_table *
1201 tilepro_elf_link_hash_table_create (bfd *abfd)
1202 {
1203 struct tilepro_elf_link_hash_table *ret;
1204 bfd_size_type amt = sizeof (struct tilepro_elf_link_hash_table);
1205
1206 ret = (struct tilepro_elf_link_hash_table *) bfd_zmalloc (amt);
1207 if (ret == NULL)
1208 return NULL;
1209
1210 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
1211 sizeof (struct tilepro_elf_link_hash_entry),
1212 TILEPRO_ELF_DATA))
1213 {
1214 free (ret);
1215 return NULL;
1216 }
1217
1218 return &ret->elf.root;
1219 }
1220
1221 /* Create the .got section. */
1222
1223 static bfd_boolean
1224 tilepro_elf_create_got_section (bfd *abfd, struct bfd_link_info *info)
1225 {
1226 flagword flags;
1227 asection *s, *s_got;
1228 struct elf_link_hash_entry *h;
1229 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1230 struct elf_link_hash_table *htab = elf_hash_table (info);
1231
1232 /* This function may be called more than once. */
1233 if (htab->sgot != NULL)
1234 return TRUE;
1235
1236 flags = bed->dynamic_sec_flags;
1237
1238 s = bfd_make_section_with_flags (abfd,
1239 (bed->rela_plts_and_copies_p
1240 ? ".rela.got" : ".rel.got"),
1241 (bed->dynamic_sec_flags
1242 | SEC_READONLY));
1243 if (s == NULL
1244 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
1245 return FALSE;
1246 htab->srelgot = s;
1247
1248 s = s_got = bfd_make_section_with_flags (abfd, ".got", flags);
1249 if (s == NULL
1250 || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
1251 return FALSE;
1252 htab->sgot = s;
1253
1254 /* The first bit of the global offset table is the header. */
1255 s->size += bed->got_header_size;
1256
1257 if (bed->want_got_plt)
1258 {
1259 s = bfd_make_section_with_flags (abfd, ".got.plt", flags);
1260 if (s == NULL
1261 || !bfd_set_section_alignment (abfd, s,
1262 bed->s->log_file_align))
1263 return FALSE;
1264 htab->sgotplt = s;
1265
1266 /* Reserve room for the header. */
1267 s->size += GOTPLT_HEADER_SIZE;
1268 }
1269
1270 if (bed->want_got_sym)
1271 {
1272 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
1273 section. We don't do this in the linker script because we don't want
1274 to define the symbol if we are not creating a global offset
1275 table. */
1276 h = _bfd_elf_define_linkage_sym (abfd, info, s_got,
1277 "_GLOBAL_OFFSET_TABLE_");
1278 elf_hash_table (info)->hgot = h;
1279 if (h == NULL)
1280 return FALSE;
1281 }
1282
1283 return TRUE;
1284 }
1285
1286 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
1287 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
1288 hash table. */
1289
1290 static bfd_boolean
1291 tilepro_elf_create_dynamic_sections (bfd *dynobj,
1292 struct bfd_link_info *info)
1293 {
1294 if (!tilepro_elf_create_got_section (dynobj, info))
1295 return FALSE;
1296
1297 return _bfd_elf_create_dynamic_sections (dynobj, info);
1298 }
1299
1300 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1301
1302 static void
1303 tilepro_elf_copy_indirect_symbol (struct bfd_link_info *info,
1304 struct elf_link_hash_entry *dir,
1305 struct elf_link_hash_entry *ind)
1306 {
1307 struct tilepro_elf_link_hash_entry *edir, *eind;
1308
1309 edir = (struct tilepro_elf_link_hash_entry *) dir;
1310 eind = (struct tilepro_elf_link_hash_entry *) ind;
1311
1312 if (eind->dyn_relocs != NULL)
1313 {
1314 if (edir->dyn_relocs != NULL)
1315 {
1316 struct tilepro_elf_dyn_relocs **pp;
1317 struct tilepro_elf_dyn_relocs *p;
1318
1319 /* Add reloc counts against the indirect sym to the direct sym
1320 list. Merge any entries against the same section. */
1321 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1322 {
1323 struct tilepro_elf_dyn_relocs *q;
1324
1325 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1326 if (q->sec == p->sec)
1327 {
1328 q->pc_count += p->pc_count;
1329 q->count += p->count;
1330 *pp = p->next;
1331 break;
1332 }
1333 if (q == NULL)
1334 pp = &p->next;
1335 }
1336 *pp = edir->dyn_relocs;
1337 }
1338
1339 edir->dyn_relocs = eind->dyn_relocs;
1340 eind->dyn_relocs = NULL;
1341 }
1342
1343 if (ind->root.type == bfd_link_hash_indirect
1344 && dir->got.refcount <= 0)
1345 {
1346 edir->tls_type = eind->tls_type;
1347 eind->tls_type = GOT_UNKNOWN;
1348 }
1349 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1350 }
1351
1352 static int
1353 tilepro_tls_translate_to_le (int r_type)
1354 {
1355 switch (r_type)
1356 {
1357 case R_TILEPRO_IMM16_X0_TLS_GD:
1358 case R_TILEPRO_IMM16_X0_TLS_IE:
1359 return R_TILEPRO_IMM16_X0_TLS_LE;
1360
1361 case R_TILEPRO_IMM16_X1_TLS_GD:
1362 case R_TILEPRO_IMM16_X1_TLS_IE:
1363 return R_TILEPRO_IMM16_X1_TLS_LE;
1364
1365 case R_TILEPRO_IMM16_X0_TLS_GD_LO:
1366 case R_TILEPRO_IMM16_X0_TLS_IE_LO:
1367 return R_TILEPRO_IMM16_X0_TLS_LE_LO;
1368
1369 case R_TILEPRO_IMM16_X1_TLS_GD_LO:
1370 case R_TILEPRO_IMM16_X1_TLS_IE_LO:
1371 return R_TILEPRO_IMM16_X1_TLS_LE_LO;
1372
1373 case R_TILEPRO_IMM16_X0_TLS_GD_HI:
1374 case R_TILEPRO_IMM16_X0_TLS_IE_HI:
1375 return R_TILEPRO_IMM16_X0_TLS_LE_HI;
1376
1377 case R_TILEPRO_IMM16_X1_TLS_GD_HI:
1378 case R_TILEPRO_IMM16_X1_TLS_IE_HI:
1379 return R_TILEPRO_IMM16_X1_TLS_LE_HI;
1380
1381 case R_TILEPRO_IMM16_X0_TLS_GD_HA:
1382 case R_TILEPRO_IMM16_X0_TLS_IE_HA:
1383 return R_TILEPRO_IMM16_X0_TLS_LE_HA;
1384
1385 case R_TILEPRO_IMM16_X1_TLS_GD_HA:
1386 case R_TILEPRO_IMM16_X1_TLS_IE_HA:
1387 return R_TILEPRO_IMM16_X1_TLS_LE_HA;
1388 }
1389 return r_type;
1390 }
1391
1392 static int
1393 tilepro_tls_translate_to_ie (int r_type)
1394 {
1395 switch (r_type)
1396 {
1397 case R_TILEPRO_IMM16_X0_TLS_GD:
1398 case R_TILEPRO_IMM16_X0_TLS_IE:
1399 return R_TILEPRO_IMM16_X0_TLS_IE;
1400
1401 case R_TILEPRO_IMM16_X1_TLS_GD:
1402 case R_TILEPRO_IMM16_X1_TLS_IE:
1403 return R_TILEPRO_IMM16_X1_TLS_IE;
1404
1405 case R_TILEPRO_IMM16_X0_TLS_GD_LO:
1406 case R_TILEPRO_IMM16_X0_TLS_IE_LO:
1407 return R_TILEPRO_IMM16_X0_TLS_IE_LO;
1408
1409 case R_TILEPRO_IMM16_X1_TLS_GD_LO:
1410 case R_TILEPRO_IMM16_X1_TLS_IE_LO:
1411 return R_TILEPRO_IMM16_X1_TLS_IE_LO;
1412
1413 case R_TILEPRO_IMM16_X0_TLS_GD_HI:
1414 case R_TILEPRO_IMM16_X0_TLS_IE_HI:
1415 return R_TILEPRO_IMM16_X0_TLS_IE_HI;
1416
1417 case R_TILEPRO_IMM16_X1_TLS_GD_HI:
1418 case R_TILEPRO_IMM16_X1_TLS_IE_HI:
1419 return R_TILEPRO_IMM16_X1_TLS_IE_HI;
1420
1421 case R_TILEPRO_IMM16_X0_TLS_GD_HA:
1422 case R_TILEPRO_IMM16_X0_TLS_IE_HA:
1423 return R_TILEPRO_IMM16_X0_TLS_IE_HA;
1424
1425 case R_TILEPRO_IMM16_X1_TLS_GD_HA:
1426 case R_TILEPRO_IMM16_X1_TLS_IE_HA:
1427 return R_TILEPRO_IMM16_X1_TLS_IE_HA;
1428 }
1429 return r_type;
1430 }
1431
1432 static int
1433 tilepro_elf_tls_transition (struct bfd_link_info *info, int r_type,
1434 int is_local)
1435 {
1436 if (!bfd_link_executable (info))
1437 return r_type;
1438
1439 if (is_local)
1440 return tilepro_tls_translate_to_le (r_type);
1441 else
1442 return tilepro_tls_translate_to_ie (r_type);
1443 }
1444
1445 /* Look through the relocs for a section during the first phase, and
1446 allocate space in the global offset table or procedure linkage
1447 table. */
1448
1449 static bfd_boolean
1450 tilepro_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
1451 asection *sec, const Elf_Internal_Rela *relocs)
1452 {
1453 struct tilepro_elf_link_hash_table *htab;
1454 Elf_Internal_Shdr *symtab_hdr;
1455 struct elf_link_hash_entry **sym_hashes;
1456 const Elf_Internal_Rela *rel;
1457 const Elf_Internal_Rela *rel_end;
1458 asection *sreloc;
1459 int num_relocs;
1460
1461 if (bfd_link_relocatable (info))
1462 return TRUE;
1463
1464 htab = tilepro_elf_hash_table (info);
1465 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1466 sym_hashes = elf_sym_hashes (abfd);
1467
1468 sreloc = NULL;
1469
1470 num_relocs = sec->reloc_count;
1471
1472 BFD_ASSERT (is_tilepro_elf (abfd) || num_relocs == 0);
1473
1474 if (htab->elf.dynobj == NULL)
1475 htab->elf.dynobj = abfd;
1476
1477 rel_end = relocs + num_relocs;
1478 for (rel = relocs; rel < rel_end; rel++)
1479 {
1480 unsigned int r_type;
1481 unsigned int r_symndx;
1482 struct elf_link_hash_entry *h;
1483 int tls_type;
1484
1485 r_symndx = ELF32_R_SYM (rel->r_info);
1486 r_type = ELF32_R_TYPE (rel->r_info);
1487
1488 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1489 {
1490 /* xgettext:c-format */
1491 _bfd_error_handler (_("%B: bad symbol index: %d"),
1492 abfd, r_symndx);
1493 return FALSE;
1494 }
1495
1496 if (r_symndx < symtab_hdr->sh_info)
1497 h = NULL;
1498 else
1499 {
1500 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1501 while (h->root.type == bfd_link_hash_indirect
1502 || h->root.type == bfd_link_hash_warning)
1503 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1504 }
1505
1506 r_type = tilepro_elf_tls_transition (info, r_type, h == NULL);
1507 switch (r_type)
1508 {
1509 case R_TILEPRO_IMM16_X0_TLS_LE:
1510 case R_TILEPRO_IMM16_X1_TLS_LE:
1511 case R_TILEPRO_IMM16_X0_TLS_LE_LO:
1512 case R_TILEPRO_IMM16_X1_TLS_LE_LO:
1513 case R_TILEPRO_IMM16_X0_TLS_LE_HI:
1514 case R_TILEPRO_IMM16_X1_TLS_LE_HI:
1515 case R_TILEPRO_IMM16_X0_TLS_LE_HA:
1516 case R_TILEPRO_IMM16_X1_TLS_LE_HA:
1517 if (!bfd_link_executable (info))
1518 goto r_tilepro_plt32;
1519 break;
1520
1521 case R_TILEPRO_IMM16_X0_TLS_GD:
1522 case R_TILEPRO_IMM16_X1_TLS_GD:
1523 case R_TILEPRO_IMM16_X0_TLS_GD_LO:
1524 case R_TILEPRO_IMM16_X1_TLS_GD_LO:
1525 case R_TILEPRO_IMM16_X0_TLS_GD_HI:
1526 case R_TILEPRO_IMM16_X1_TLS_GD_HI:
1527 case R_TILEPRO_IMM16_X0_TLS_GD_HA:
1528 case R_TILEPRO_IMM16_X1_TLS_GD_HA:
1529 BFD_ASSERT (bfd_link_pic (info));
1530 tls_type = GOT_TLS_GD;
1531 goto have_got_reference;
1532
1533 case R_TILEPRO_IMM16_X0_TLS_IE:
1534 case R_TILEPRO_IMM16_X1_TLS_IE:
1535 case R_TILEPRO_IMM16_X0_TLS_IE_LO:
1536 case R_TILEPRO_IMM16_X1_TLS_IE_LO:
1537 case R_TILEPRO_IMM16_X0_TLS_IE_HI:
1538 case R_TILEPRO_IMM16_X1_TLS_IE_HI:
1539 case R_TILEPRO_IMM16_X0_TLS_IE_HA:
1540 case R_TILEPRO_IMM16_X1_TLS_IE_HA:
1541 tls_type = GOT_TLS_IE;
1542 if (!bfd_link_executable (info))
1543 info->flags |= DF_STATIC_TLS;
1544 goto have_got_reference;
1545
1546 case R_TILEPRO_IMM16_X0_GOT:
1547 case R_TILEPRO_IMM16_X1_GOT:
1548 case R_TILEPRO_IMM16_X0_GOT_LO:
1549 case R_TILEPRO_IMM16_X1_GOT_LO:
1550 case R_TILEPRO_IMM16_X0_GOT_HI:
1551 case R_TILEPRO_IMM16_X1_GOT_HI:
1552 case R_TILEPRO_IMM16_X0_GOT_HA:
1553 case R_TILEPRO_IMM16_X1_GOT_HA:
1554 tls_type = GOT_NORMAL;
1555 /* Fall Through */
1556
1557 have_got_reference:
1558 /* This symbol requires a global offset table entry. */
1559 {
1560 int old_tls_type;
1561
1562 if (h != NULL)
1563 {
1564 h->got.refcount += 1;
1565 old_tls_type = tilepro_elf_hash_entry(h)->tls_type;
1566 }
1567 else
1568 {
1569 bfd_signed_vma *local_got_refcounts;
1570
1571 /* This is a global offset table entry for a local symbol. */
1572 local_got_refcounts = elf_local_got_refcounts (abfd);
1573 if (local_got_refcounts == NULL)
1574 {
1575 bfd_size_type size;
1576
1577 size = symtab_hdr->sh_info;
1578 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1579 local_got_refcounts = ((bfd_signed_vma *)
1580 bfd_zalloc (abfd, size));
1581 if (local_got_refcounts == NULL)
1582 return FALSE;
1583 elf_local_got_refcounts (abfd) = local_got_refcounts;
1584 _bfd_tilepro_elf_local_got_tls_type (abfd)
1585 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1586 }
1587 local_got_refcounts[r_symndx] += 1;
1588 old_tls_type =
1589 _bfd_tilepro_elf_local_got_tls_type (abfd) [r_symndx];
1590 }
1591
1592 /* If a TLS symbol is accessed using IE at least once,
1593 there is no point to use dynamic model for it. */
1594 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1595 && (old_tls_type != GOT_TLS_GD
1596 || tls_type != GOT_TLS_IE))
1597 {
1598 if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
1599 tls_type = old_tls_type;
1600 else
1601 {
1602 _bfd_error_handler
1603 /* xgettext:c-format */
1604 (_("%B: `%s' accessed both as normal and thread local symbol"),
1605 abfd, h ? h->root.root.string : "<local>");
1606 return FALSE;
1607 }
1608 }
1609
1610 if (old_tls_type != tls_type)
1611 {
1612 if (h != NULL)
1613 tilepro_elf_hash_entry (h)->tls_type = tls_type;
1614 else
1615 _bfd_tilepro_elf_local_got_tls_type (abfd) [r_symndx] =
1616 tls_type;
1617 }
1618 }
1619
1620 if (htab->elf.sgot == NULL)
1621 {
1622 if (!tilepro_elf_create_got_section (htab->elf.dynobj, info))
1623 return FALSE;
1624 }
1625 break;
1626
1627 case R_TILEPRO_TLS_GD_CALL:
1628 if (!bfd_link_executable (info))
1629 {
1630 /* These are basically R_TILEPRO_JOFFLONG_X1_PLT relocs
1631 against __tls_get_addr. */
1632 struct bfd_link_hash_entry *bh = NULL;
1633 if (! _bfd_generic_link_add_one_symbol (info, abfd,
1634 "__tls_get_addr", 0,
1635 bfd_und_section_ptr, 0,
1636 NULL, FALSE, FALSE,
1637 &bh))
1638 return FALSE;
1639 h = (struct elf_link_hash_entry *) bh;
1640 }
1641 else
1642 break;
1643 /* Fall through */
1644
1645 case R_TILEPRO_JOFFLONG_X1_PLT:
1646 /* This symbol requires a procedure linkage table entry. We
1647 actually build the entry in adjust_dynamic_symbol,
1648 because this might be a case of linking PIC code without
1649 linking in any dynamic objects, in which case we don't
1650 need to generate a procedure linkage table after all. */
1651
1652 if (h != NULL)
1653 {
1654 h->needs_plt = 1;
1655 h->plt.refcount += 1;
1656 }
1657 break;
1658
1659 case R_TILEPRO_32_PCREL:
1660 case R_TILEPRO_16_PCREL:
1661 case R_TILEPRO_8_PCREL:
1662 case R_TILEPRO_IMM16_X0_PCREL:
1663 case R_TILEPRO_IMM16_X1_PCREL:
1664 case R_TILEPRO_IMM16_X0_LO_PCREL:
1665 case R_TILEPRO_IMM16_X1_LO_PCREL:
1666 case R_TILEPRO_IMM16_X0_HI_PCREL:
1667 case R_TILEPRO_IMM16_X1_HI_PCREL:
1668 case R_TILEPRO_IMM16_X0_HA_PCREL:
1669 case R_TILEPRO_IMM16_X1_HA_PCREL:
1670 if (h != NULL)
1671 h->non_got_ref = 1;
1672
1673 if (h != NULL
1674 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1675 break;
1676 /* Fall through. */
1677
1678 case R_TILEPRO_32:
1679 case R_TILEPRO_16:
1680 case R_TILEPRO_8:
1681 case R_TILEPRO_LO16:
1682 case R_TILEPRO_HI16:
1683 case R_TILEPRO_HA16:
1684 case R_TILEPRO_COPY:
1685 case R_TILEPRO_GLOB_DAT:
1686 case R_TILEPRO_JMP_SLOT:
1687 case R_TILEPRO_RELATIVE:
1688 case R_TILEPRO_BROFF_X1:
1689 case R_TILEPRO_JOFFLONG_X1:
1690 case R_TILEPRO_IMM8_X0:
1691 case R_TILEPRO_IMM8_Y0:
1692 case R_TILEPRO_IMM8_X1:
1693 case R_TILEPRO_IMM8_Y1:
1694 case R_TILEPRO_DEST_IMM8_X1:
1695 case R_TILEPRO_MT_IMM15_X1:
1696 case R_TILEPRO_MF_IMM15_X1:
1697 case R_TILEPRO_IMM16_X0:
1698 case R_TILEPRO_IMM16_X1:
1699 case R_TILEPRO_IMM16_X0_LO:
1700 case R_TILEPRO_IMM16_X1_LO:
1701 case R_TILEPRO_IMM16_X0_HI:
1702 case R_TILEPRO_IMM16_X1_HI:
1703 case R_TILEPRO_IMM16_X0_HA:
1704 case R_TILEPRO_IMM16_X1_HA:
1705 case R_TILEPRO_MMSTART_X0:
1706 case R_TILEPRO_MMEND_X0:
1707 case R_TILEPRO_MMSTART_X1:
1708 case R_TILEPRO_MMEND_X1:
1709 case R_TILEPRO_SHAMT_X0:
1710 case R_TILEPRO_SHAMT_X1:
1711 case R_TILEPRO_SHAMT_Y0:
1712 case R_TILEPRO_SHAMT_Y1:
1713 if (h != NULL)
1714 h->non_got_ref = 1;
1715
1716 r_tilepro_plt32:
1717 if (h != NULL && !bfd_link_pic (info))
1718 {
1719 /* We may need a .plt entry if the function this reloc
1720 refers to is in a shared lib. */
1721 h->plt.refcount += 1;
1722 }
1723
1724 /* If we are creating a shared library, and this is a reloc
1725 against a global symbol, or a non PC relative reloc
1726 against a local symbol, then we need to copy the reloc
1727 into the shared library. However, if we are linking with
1728 -Bsymbolic, we do not need to copy a reloc against a
1729 global symbol which is defined in an object we are
1730 including in the link (i.e., DEF_REGULAR is set). At
1731 this point we have not seen all the input files, so it is
1732 possible that DEF_REGULAR is not set now but will be set
1733 later (it is never cleared). In case of a weak definition,
1734 DEF_REGULAR may be cleared later by a strong definition in
1735 a shared library. We account for that possibility below by
1736 storing information in the relocs_copied field of the hash
1737 table entry. A similar situation occurs when creating
1738 shared libraries and symbol visibility changes render the
1739 symbol local.
1740
1741 If on the other hand, we are creating an executable, we
1742 may need to keep relocations for symbols satisfied by a
1743 dynamic library if we manage to avoid copy relocs for the
1744 symbol. */
1745 if ((bfd_link_pic (info)
1746 && (sec->flags & SEC_ALLOC) != 0
1747 && (! tilepro_elf_howto_table[r_type].pc_relative
1748 || (h != NULL
1749 && (! info->symbolic
1750 || h->root.type == bfd_link_hash_defweak
1751 || !h->def_regular))))
1752 || (!bfd_link_pic (info)
1753 && (sec->flags & SEC_ALLOC) != 0
1754 && h != NULL
1755 && (h->root.type == bfd_link_hash_defweak
1756 || !h->def_regular)))
1757 {
1758 struct tilepro_elf_dyn_relocs *p;
1759 struct tilepro_elf_dyn_relocs **head;
1760
1761 /* When creating a shared object, we must copy these
1762 relocs into the output file. We create a reloc
1763 section in dynobj and make room for the reloc. */
1764 if (sreloc == NULL)
1765 {
1766 sreloc = _bfd_elf_make_dynamic_reloc_section
1767 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
1768
1769 if (sreloc == NULL)
1770 return FALSE;
1771 }
1772
1773 /* If this is a global symbol, we count the number of
1774 relocations we need for this symbol. */
1775 if (h != NULL)
1776 head =
1777 &((struct tilepro_elf_link_hash_entry *) h)->dyn_relocs;
1778 else
1779 {
1780 /* Track dynamic relocs needed for local syms too.
1781 We really need local syms available to do this
1782 easily. Oh well. */
1783
1784 asection *s;
1785 void *vpp;
1786 Elf_Internal_Sym *isym;
1787
1788 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1789 abfd, r_symndx);
1790 if (isym == NULL)
1791 return FALSE;
1792
1793 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1794 if (s == NULL)
1795 s = sec;
1796
1797 vpp = &elf_section_data (s)->local_dynrel;
1798 head = (struct tilepro_elf_dyn_relocs **) vpp;
1799 }
1800
1801 p = *head;
1802 if (p == NULL || p->sec != sec)
1803 {
1804 bfd_size_type amt = sizeof *p;
1805 p = ((struct tilepro_elf_dyn_relocs *)
1806 bfd_alloc (htab->elf.dynobj, amt));
1807 if (p == NULL)
1808 return FALSE;
1809 p->next = *head;
1810 *head = p;
1811 p->sec = sec;
1812 p->count = 0;
1813 p->pc_count = 0;
1814 }
1815
1816 p->count += 1;
1817 if (tilepro_elf_howto_table[r_type].pc_relative)
1818 p->pc_count += 1;
1819 }
1820
1821 break;
1822
1823 case R_TILEPRO_GNU_VTINHERIT:
1824 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1825 return FALSE;
1826 break;
1827
1828 case R_TILEPRO_GNU_VTENTRY:
1829 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1830 return FALSE;
1831 break;
1832
1833 default:
1834 break;
1835 }
1836 }
1837
1838 return TRUE;
1839 }
1840
1841 \f
1842 static asection *
1843 tilepro_elf_gc_mark_hook (asection *sec,
1844 struct bfd_link_info *info,
1845 Elf_Internal_Rela *rel,
1846 struct elf_link_hash_entry *h,
1847 Elf_Internal_Sym *sym)
1848 {
1849 if (h != NULL)
1850 {
1851 switch (ELF32_R_TYPE (rel->r_info))
1852 {
1853 case R_TILEPRO_GNU_VTINHERIT:
1854 case R_TILEPRO_GNU_VTENTRY:
1855 return NULL;
1856 }
1857 }
1858
1859 /* FIXME: The test here, in check_relocs and in relocate_section
1860 dealing with TLS optimization, ought to be !bfd_link_executable (info). */
1861 if (bfd_link_pic (info))
1862 {
1863 struct bfd_link_hash_entry *bh;
1864
1865 switch (ELF32_R_TYPE (rel->r_info))
1866 {
1867 case R_TILEPRO_TLS_GD_CALL:
1868 /* This reloc implicitly references __tls_get_addr. We know
1869 another reloc will reference the same symbol as the one
1870 on this reloc, so the real symbol and section will be
1871 gc marked when processing the other reloc. That lets
1872 us handle __tls_get_addr here. */
1873 bh = NULL;
1874 if (! _bfd_generic_link_add_one_symbol (info, sec->owner,
1875 "__tls_get_addr", 0,
1876 bfd_und_section_ptr,
1877 0, NULL, FALSE,
1878 FALSE, &bh))
1879 return NULL;
1880 h = (struct elf_link_hash_entry *) bh;
1881 BFD_ASSERT (h != NULL);
1882 h->mark = 1;
1883 if (h->is_weakalias)
1884 weakdef (h)->mark = 1;
1885 sym = NULL;
1886 }
1887 }
1888
1889 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1890 }
1891
1892 /* Find dynamic relocs for H that apply to read-only sections. */
1893
1894 static asection *
1895 readonly_dynrelocs (struct elf_link_hash_entry *h)
1896 {
1897 struct tilepro_elf_dyn_relocs *p;
1898
1899 for (p = tilepro_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
1900 {
1901 asection *s = p->sec->output_section;
1902
1903 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1904 return p->sec;
1905 }
1906 return NULL;
1907 }
1908
1909 /* Adjust a symbol defined by a dynamic object and referenced by a
1910 regular object. The current definition is in some section of the
1911 dynamic object, but we're not including those sections. We have to
1912 change the definition to something the rest of the link can
1913 understand. */
1914
1915 static bfd_boolean
1916 tilepro_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
1917 struct elf_link_hash_entry *h)
1918 {
1919 struct tilepro_elf_link_hash_table *htab;
1920 struct tilepro_elf_link_hash_entry * eh;
1921 struct tilepro_elf_dyn_relocs *p;
1922 asection *s, *srel;
1923
1924 htab = tilepro_elf_hash_table (info);
1925 BFD_ASSERT (htab != NULL);
1926
1927 /* Make sure we know what is going on here. */
1928 BFD_ASSERT (htab->elf.dynobj != NULL
1929 && (h->needs_plt
1930 || h->is_weakalias
1931 || (h->def_dynamic
1932 && h->ref_regular
1933 && !h->def_regular)));
1934
1935 /* If this is a function, put it in the procedure linkage table. We
1936 will fill in the contents of the procedure linkage table later
1937 (although we could actually do it here). */
1938 if (h->type == STT_FUNC || h->needs_plt)
1939 {
1940 if (h->plt.refcount <= 0
1941 || SYMBOL_CALLS_LOCAL (info, h)
1942 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1943 && h->root.type == bfd_link_hash_undefweak))
1944 {
1945 /* This case can occur if we saw a R_TILEPRO_JOFFLONG_X1_PLT
1946 reloc in an input file, but the symbol was never referred
1947 to by a dynamic object, or if all references were garbage
1948 collected. In such a case, we don't actually need to build
1949 a procedure linkage table, and we can just do a
1950 R_TILEPRO_JOFFLONG_X1 relocation instead. */
1951 h->plt.offset = (bfd_vma) -1;
1952 h->needs_plt = 0;
1953 }
1954
1955 return TRUE;
1956 }
1957 else
1958 h->plt.offset = (bfd_vma) -1;
1959
1960 /* If this is a weak symbol, and there is a real definition, the
1961 processor independent code will have arranged for us to see the
1962 real definition first, and we can just use the same value. */
1963 if (h->is_weakalias)
1964 {
1965 struct elf_link_hash_entry *def = weakdef (h);
1966 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
1967 h->root.u.def.section = def->root.u.def.section;
1968 h->root.u.def.value = def->root.u.def.value;
1969 return TRUE;
1970 }
1971
1972 /* This is a reference to a symbol defined by a dynamic object which
1973 is not a function. */
1974
1975 /* If we are creating a shared library, we must presume that the
1976 only references to the symbol are via the global offset table.
1977 For such cases we need not do anything here; the relocations will
1978 be handled correctly by relocate_section. */
1979 if (bfd_link_pic (info))
1980 return TRUE;
1981
1982 /* If there are no references to this symbol that do not use the
1983 GOT, we don't need to generate a copy reloc. */
1984 if (!h->non_got_ref)
1985 return TRUE;
1986
1987 /* If -z nocopyreloc was given, we won't generate them either. */
1988 if (info->nocopyreloc)
1989 {
1990 h->non_got_ref = 0;
1991 return TRUE;
1992 }
1993
1994 eh = (struct tilepro_elf_link_hash_entry *) h;
1995 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1996 {
1997 s = p->sec->output_section;
1998 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1999 break;
2000 }
2001
2002 /* If we didn't find any dynamic relocs in read-only sections, then
2003 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2004 if (p == NULL)
2005 {
2006 h->non_got_ref = 0;
2007 return TRUE;
2008 }
2009
2010 /* We must allocate the symbol in our .dynbss section, which will
2011 become part of the .bss section of the executable. There will be
2012 an entry for this symbol in the .dynsym section. The dynamic
2013 object will contain position independent code, so all references
2014 from the dynamic object to this symbol will go through the global
2015 offset table. The dynamic linker will use the .dynsym entry to
2016 determine the address it must put in the global offset table, so
2017 both the dynamic object and the regular object will refer to the
2018 same memory location for the variable. */
2019
2020 /* We must generate a R_TILEPRO_COPY reloc to tell the dynamic linker
2021 to copy the initial value out of the dynamic object and into the
2022 runtime process image. We need to remember the offset into the
2023 .rel.bss section we are going to use. */
2024 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
2025 {
2026 s = htab->elf.sdynrelro;
2027 srel = htab->elf.sreldynrelro;
2028 }
2029 else
2030 {
2031 s = htab->elf.sdynbss;
2032 srel = htab->elf.srelbss;
2033 }
2034 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2035 {
2036 srel->size += TILEPRO_ELF_RELA_BYTES;
2037 h->needs_copy = 1;
2038 }
2039
2040 return _bfd_elf_adjust_dynamic_copy (info, h, s);
2041 }
2042
2043 /* Allocate space in .plt, .got and associated reloc sections for
2044 dynamic relocs. */
2045
2046 static bfd_boolean
2047 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2048 {
2049 struct bfd_link_info *info;
2050 struct tilepro_elf_link_hash_table *htab;
2051 struct tilepro_elf_link_hash_entry *eh;
2052 struct tilepro_elf_dyn_relocs *p;
2053
2054 if (h->root.type == bfd_link_hash_indirect)
2055 return TRUE;
2056
2057 info = (struct bfd_link_info *) inf;
2058 htab = tilepro_elf_hash_table (info);
2059 BFD_ASSERT (htab != NULL);
2060
2061 if (htab->elf.dynamic_sections_created
2062 && h->plt.refcount > 0)
2063 {
2064 /* Make sure this symbol is output as a dynamic symbol.
2065 Undefined weak syms won't yet be marked as dynamic. */
2066 if (h->dynindx == -1
2067 && !h->forced_local)
2068 {
2069 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2070 return FALSE;
2071 }
2072
2073 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
2074 {
2075 asection *s = htab->elf.splt;
2076
2077 /* Allocate room for the header. */
2078 if (s->size == 0)
2079 {
2080 s->size = PLT_ENTRY_SIZE;
2081 }
2082
2083 h->plt.offset = s->size;
2084
2085 /* If this symbol is not defined in a regular file, and we are
2086 not generating a shared library, then set the symbol to this
2087 location in the .plt. This is required to make function
2088 pointers compare as equal between the normal executable and
2089 the shared library. */
2090 if (! bfd_link_pic (info)
2091 && !h->def_regular)
2092 {
2093 h->root.u.def.section = s;
2094 h->root.u.def.value = h->plt.offset;
2095 }
2096
2097 /* Make room for this entry. */
2098 s->size += PLT_ENTRY_SIZE;
2099
2100 /* We also need to make an entry in the .got.plt section. */
2101 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
2102
2103 /* We also need to make an entry in the .rela.plt section. */
2104 htab->elf.srelplt->size += TILEPRO_ELF_RELA_BYTES;
2105 }
2106 else
2107 {
2108 h->plt.offset = (bfd_vma) -1;
2109 h->needs_plt = 0;
2110 }
2111 }
2112 else
2113 {
2114 h->plt.offset = (bfd_vma) -1;
2115 h->needs_plt = 0;
2116 }
2117
2118 /* If a TLS_IE symbol is now local to the binary, make it a TLS_LE
2119 requiring no TLS entry. */
2120 if (h->got.refcount > 0
2121 && bfd_link_executable (info)
2122 && h->dynindx == -1
2123 && tilepro_elf_hash_entry(h)->tls_type == GOT_TLS_IE)
2124 h->got.offset = (bfd_vma) -1;
2125 else if (h->got.refcount > 0)
2126 {
2127 asection *s;
2128 bfd_boolean dyn;
2129 int tls_type = tilepro_elf_hash_entry(h)->tls_type;
2130
2131 /* Make sure this symbol is output as a dynamic symbol.
2132 Undefined weak syms won't yet be marked as dynamic. */
2133 if (h->dynindx == -1
2134 && !h->forced_local)
2135 {
2136 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2137 return FALSE;
2138 }
2139
2140 s = htab->elf.sgot;
2141 h->got.offset = s->size;
2142 s->size += TILEPRO_BYTES_PER_WORD;
2143 /* R_TILEPRO_IMM16_Xn_TLS_GD entries need 2 consecutive GOT slots. */
2144 if (tls_type == GOT_TLS_GD)
2145 s->size += TILEPRO_BYTES_PER_WORD;
2146 dyn = htab->elf.dynamic_sections_created;
2147 /* R_TILEPRO_IMM16_Xn_TLS_IE_xxx needs one dynamic relocation,
2148 R_TILEPRO_IMM16_Xn_TLS_GD_xxx needs two if local symbol and two if
2149 global. */
2150 if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE)
2151 htab->elf.srelgot->size += 2 * TILEPRO_ELF_RELA_BYTES;
2152 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2153 bfd_link_pic (info),
2154 h))
2155 htab->elf.srelgot->size += TILEPRO_ELF_RELA_BYTES;
2156 }
2157 else
2158 h->got.offset = (bfd_vma) -1;
2159
2160 eh = (struct tilepro_elf_link_hash_entry *) h;
2161 if (eh->dyn_relocs == NULL)
2162 return TRUE;
2163
2164 /* In the shared -Bsymbolic case, discard space allocated for
2165 dynamic pc-relative relocs against symbols which turn out to be
2166 defined in regular objects. For the normal shared case, discard
2167 space for pc-relative relocs that have become local due to symbol
2168 visibility changes. */
2169
2170 if (bfd_link_pic (info))
2171 {
2172 if (SYMBOL_CALLS_LOCAL (info, h))
2173 {
2174 struct tilepro_elf_dyn_relocs **pp;
2175
2176 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2177 {
2178 p->count -= p->pc_count;
2179 p->pc_count = 0;
2180 if (p->count == 0)
2181 *pp = p->next;
2182 else
2183 pp = &p->next;
2184 }
2185 }
2186
2187 /* Also discard relocs on undefined weak syms with non-default
2188 visibility. */
2189 if (eh->dyn_relocs != NULL
2190 && h->root.type == bfd_link_hash_undefweak)
2191 {
2192 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2193 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
2194 eh->dyn_relocs = NULL;
2195
2196 /* Make sure undefined weak symbols are output as a dynamic
2197 symbol in PIEs. */
2198 else if (h->dynindx == -1
2199 && !h->forced_local)
2200 {
2201 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2202 return FALSE;
2203 }
2204 }
2205 }
2206 else
2207 {
2208 /* For the non-shared case, discard space for relocs against
2209 symbols which turn out to need copy relocs or are not
2210 dynamic. */
2211
2212 if (!h->non_got_ref
2213 && ((h->def_dynamic
2214 && !h->def_regular)
2215 || (htab->elf.dynamic_sections_created
2216 && (h->root.type == bfd_link_hash_undefweak
2217 || h->root.type == bfd_link_hash_undefined))))
2218 {
2219 /* Make sure this symbol is output as a dynamic symbol.
2220 Undefined weak syms won't yet be marked as dynamic. */
2221 if (h->dynindx == -1
2222 && !h->forced_local)
2223 {
2224 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2225 return FALSE;
2226 }
2227
2228 /* If that succeeded, we know we'll be keeping all the
2229 relocs. */
2230 if (h->dynindx != -1)
2231 goto keep;
2232 }
2233
2234 eh->dyn_relocs = NULL;
2235
2236 keep: ;
2237 }
2238
2239 /* Finally, allocate space. */
2240 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2241 {
2242 asection *sreloc = elf_section_data (p->sec)->sreloc;
2243 sreloc->size += p->count * TILEPRO_ELF_RELA_BYTES;
2244 }
2245
2246 return TRUE;
2247 }
2248
2249 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
2250 read-only sections. */
2251
2252 static bfd_boolean
2253 maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
2254 {
2255 asection *sec;
2256
2257 if (h->root.type == bfd_link_hash_indirect)
2258 return TRUE;
2259
2260 sec = readonly_dynrelocs (h);
2261 if (sec != NULL)
2262 {
2263 struct bfd_link_info *info = (struct bfd_link_info *) info_p;
2264
2265 info->flags |= DF_TEXTREL;
2266 info->callbacks->minfo
2267 (_("%B: dynamic relocation against `%T' in read-only section `%A'\n"),
2268 sec->owner, h->root.root.string, sec);
2269
2270 /* Not an error, just cut short the traversal. */
2271 return FALSE;
2272 }
2273 return TRUE;
2274 }
2275
2276 /* Return true if the dynamic symbol for a given section should be
2277 omitted when creating a shared library. */
2278
2279 static bfd_boolean
2280 tilepro_elf_omit_section_dynsym (bfd *output_bfd,
2281 struct bfd_link_info *info,
2282 asection *p)
2283 {
2284 /* We keep the .got section symbol so that explicit relocations
2285 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode
2286 can be turned into relocations against the .got symbol. */
2287 if (strcmp (p->name, ".got") == 0)
2288 return FALSE;
2289
2290 return _bfd_elf_link_omit_section_dynsym (output_bfd, info, p);
2291 }
2292
2293 /* Set the sizes of the dynamic sections. */
2294
2295 #define ELF32_DYNAMIC_INTERPRETER "/lib/ld.so.1"
2296
2297 static bfd_boolean
2298 tilepro_elf_size_dynamic_sections (bfd *output_bfd,
2299 struct bfd_link_info *info)
2300 {
2301 (void)output_bfd;
2302
2303 struct tilepro_elf_link_hash_table *htab;
2304 bfd *dynobj;
2305 asection *s;
2306 bfd *ibfd;
2307
2308 htab = tilepro_elf_hash_table (info);
2309 BFD_ASSERT (htab != NULL);
2310 dynobj = htab->elf.dynobj;
2311 BFD_ASSERT (dynobj != NULL);
2312
2313 if (elf_hash_table (info)->dynamic_sections_created)
2314 {
2315 /* Set the contents of the .interp section to the interpreter. */
2316 if (bfd_link_executable (info) && !info->nointerp)
2317 {
2318 s = bfd_get_linker_section (dynobj, ".interp");
2319 BFD_ASSERT (s != NULL);
2320 s->size = sizeof ELF32_DYNAMIC_INTERPRETER;
2321 s->contents = (unsigned char *) ELF32_DYNAMIC_INTERPRETER;
2322 }
2323 }
2324
2325 /* Set up .got offsets for local syms, and space for local dynamic
2326 relocs. */
2327 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2328 {
2329 bfd_signed_vma *local_got;
2330 bfd_signed_vma *end_local_got;
2331 char *local_tls_type;
2332 bfd_size_type locsymcount;
2333 Elf_Internal_Shdr *symtab_hdr;
2334 asection *srel;
2335
2336 if (! is_tilepro_elf (ibfd))
2337 continue;
2338
2339 for (s = ibfd->sections; s != NULL; s = s->next)
2340 {
2341 struct tilepro_elf_dyn_relocs *p;
2342
2343 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2344 {
2345 if (!bfd_is_abs_section (p->sec)
2346 && bfd_is_abs_section (p->sec->output_section))
2347 {
2348 /* Input section has been discarded, either because
2349 it is a copy of a linkonce section or due to
2350 linker script /DISCARD/, so we'll be discarding
2351 the relocs too. */
2352 }
2353 else if (p->count != 0)
2354 {
2355 srel = elf_section_data (p->sec)->sreloc;
2356 srel->size += p->count * TILEPRO_ELF_RELA_BYTES;
2357 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2358 {
2359 info->flags |= DF_TEXTREL;
2360
2361 info->callbacks->minfo (_("%B: dynamic relocation in read-only section `%A'\n"),
2362 p->sec->owner, p->sec);
2363 }
2364 }
2365 }
2366 }
2367
2368 local_got = elf_local_got_refcounts (ibfd);
2369 if (!local_got)
2370 continue;
2371
2372 symtab_hdr = &elf_symtab_hdr (ibfd);
2373 locsymcount = symtab_hdr->sh_info;
2374 end_local_got = local_got + locsymcount;
2375 local_tls_type = _bfd_tilepro_elf_local_got_tls_type (ibfd);
2376 s = htab->elf.sgot;
2377 srel = htab->elf.srelgot;
2378 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2379 {
2380 if (*local_got > 0)
2381 {
2382 *local_got = s->size;
2383 s->size += TILEPRO_BYTES_PER_WORD;
2384 if (*local_tls_type == GOT_TLS_GD)
2385 s->size += TILEPRO_BYTES_PER_WORD;
2386 if (bfd_link_pic (info)
2387 || *local_tls_type == GOT_TLS_GD
2388 || *local_tls_type == GOT_TLS_IE)
2389 srel->size += TILEPRO_ELF_RELA_BYTES;
2390 }
2391 else
2392 *local_got = (bfd_vma) -1;
2393 }
2394 }
2395
2396 /* Allocate global sym .plt and .got entries, and space for global
2397 sym dynamic relocs. */
2398 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
2399
2400 if (elf_hash_table (info)->dynamic_sections_created)
2401 {
2402 /* If the .got section is more than 0x8000 bytes, we add
2403 0x8000 to the value of _GLOBAL_OFFSET_TABLE_, so that 16
2404 bit relocations have a greater chance of working. */
2405 if (htab->elf.sgot->size >= 0x8000
2406 && elf_hash_table (info)->hgot->root.u.def.value == 0)
2407 elf_hash_table (info)->hgot->root.u.def.value = 0x8000;
2408 }
2409
2410 if (htab->elf.sgotplt)
2411 {
2412 struct elf_link_hash_entry *got;
2413 got = elf_link_hash_lookup (elf_hash_table (info),
2414 "_GLOBAL_OFFSET_TABLE_",
2415 FALSE, FALSE, FALSE);
2416
2417 /* Don't allocate .got.plt section if there are no GOT nor PLT
2418 entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */
2419 if ((got == NULL
2420 || !got->ref_regular_nonweak)
2421 && (htab->elf.sgotplt->size
2422 == GOTPLT_HEADER_SIZE)
2423 && (htab->elf.splt == NULL
2424 || htab->elf.splt->size == 0)
2425 && (htab->elf.sgot == NULL
2426 || (htab->elf.sgot->size
2427 == get_elf_backend_data (output_bfd)->got_header_size)))
2428 htab->elf.sgotplt->size = 0;
2429 }
2430
2431 /* The check_relocs and adjust_dynamic_symbol entry points have
2432 determined the sizes of the various dynamic sections. Allocate
2433 memory for them. */
2434 for (s = dynobj->sections; s != NULL; s = s->next)
2435 {
2436 if ((s->flags & SEC_LINKER_CREATED) == 0)
2437 continue;
2438
2439 if (s == htab->elf.splt
2440 || s == htab->elf.sgot
2441 || s == htab->elf.sgotplt
2442 || s == htab->elf.sdynbss
2443 || s == htab->elf.sdynrelro)
2444 {
2445 /* Strip this section if we don't need it; see the
2446 comment below. */
2447 }
2448 else if (strncmp (s->name, ".rela", 5) == 0)
2449 {
2450 if (s->size != 0)
2451 {
2452 /* We use the reloc_count field as a counter if we need
2453 to copy relocs into the output file. */
2454 s->reloc_count = 0;
2455 }
2456 }
2457 else
2458 {
2459 /* It's not one of our sections. */
2460 continue;
2461 }
2462
2463 if (s->size == 0)
2464 {
2465 /* If we don't need this section, strip it from the
2466 output file. This is mostly to handle .rela.bss and
2467 .rela.plt. We must create both sections in
2468 create_dynamic_sections, because they must be created
2469 before the linker maps input sections to output
2470 sections. The linker does that before
2471 adjust_dynamic_symbol is called, and it is that
2472 function which decides whether anything needs to go
2473 into these sections. */
2474 s->flags |= SEC_EXCLUDE;
2475 continue;
2476 }
2477
2478 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2479 continue;
2480
2481 /* Allocate memory for the section contents. Zero the memory
2482 for the benefit of .rela.plt, which has 4 unused entries
2483 at the beginning, and we don't want garbage. */
2484 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2485 if (s->contents == NULL)
2486 return FALSE;
2487 }
2488
2489 if (elf_hash_table (info)->dynamic_sections_created)
2490 {
2491 /* Add some entries to the .dynamic section. We fill in the
2492 values later, in tilepro_elf_finish_dynamic_sections, but we
2493 must add the entries now so that we get the correct size for
2494 the .dynamic section. The DT_DEBUG entry is filled in by the
2495 dynamic linker and used by the debugger. */
2496 #define add_dynamic_entry(TAG, VAL) \
2497 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2498
2499 if (bfd_link_executable (info))
2500 {
2501 if (!add_dynamic_entry (DT_DEBUG, 0))
2502 return FALSE;
2503 }
2504
2505 if (htab->elf.srelplt->size != 0)
2506 {
2507 if (!add_dynamic_entry (DT_PLTGOT, 0)
2508 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2509 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2510 || !add_dynamic_entry (DT_JMPREL, 0))
2511 return FALSE;
2512 }
2513
2514 if (!add_dynamic_entry (DT_RELA, 0)
2515 || !add_dynamic_entry (DT_RELASZ, 0)
2516 || !add_dynamic_entry (DT_RELAENT, TILEPRO_ELF_RELA_BYTES))
2517 return FALSE;
2518
2519 /* If any dynamic relocs apply to a read-only section,
2520 then we need a DT_TEXTREL entry. */
2521 if ((info->flags & DF_TEXTREL) == 0)
2522 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
2523
2524 if (info->flags & DF_TEXTREL)
2525 {
2526 if (!add_dynamic_entry (DT_TEXTREL, 0))
2527 return FALSE;
2528 }
2529 }
2530 #undef add_dynamic_entry
2531
2532 return TRUE;
2533 }
2534 \f
2535 /* Return the base VMA address which should be subtracted from real addresses
2536 when resolving @dtpoff relocation.
2537 This is PT_TLS segment p_vaddr. */
2538
2539 static bfd_vma
2540 dtpoff_base (struct bfd_link_info *info)
2541 {
2542 /* If tls_sec is NULL, we should have signalled an error already. */
2543 if (elf_hash_table (info)->tls_sec == NULL)
2544 return 0;
2545 return elf_hash_table (info)->tls_sec->vma;
2546 }
2547
2548 /* Return the relocation value for R_TILEPRO_TLS_TPOFF32. */
2549
2550 static bfd_vma
2551 tpoff (struct bfd_link_info *info, bfd_vma address)
2552 {
2553 struct elf_link_hash_table *htab = elf_hash_table (info);
2554
2555 /* If tls_sec is NULL, we should have signalled an error already. */
2556 if (htab->tls_sec == NULL)
2557 return 0;
2558
2559 return (address - htab->tls_sec->vma);
2560 }
2561
2562 /* Replace the MASK bits in ADDR with those in INSN, for the next
2563 TILEPRO_BUNDLE_SIZE_IN_BYTES bytes. */
2564
2565 static void
2566 tilepro_replace_insn (bfd_byte *addr, const bfd_byte *mask,
2567 const bfd_byte *insn)
2568 {
2569 int i;
2570 for (i = 0; i < TILEPRO_BUNDLE_SIZE_IN_BYTES; i++)
2571 {
2572 addr[i] = (addr[i] & ~mask[i]) | (insn[i] & mask[i]);
2573 }
2574 }
2575
2576 /* Mask to extract the bits corresponding to an instruction in a
2577 specific pipe of a bundle. */
2578 static const bfd_byte insn_mask_X1[] = {
2579 0x00, 0x00, 0x00, 0x80, 0xff, 0xff, 0xff, 0x7f
2580 };
2581
2582 /* Mask to extract the bits corresponding to an instruction in a
2583 specific pipe of a bundle, minus the destination operand and the
2584 first source operand. */
2585 static const bfd_byte insn_mask_X0_no_dest_no_srca[] = {
2586 0x00, 0xf0, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00
2587 };
2588
2589 static const bfd_byte insn_mask_X1_no_dest_no_srca[] = {
2590 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0x7f
2591 };
2592
2593 static const bfd_byte insn_mask_Y0_no_dest_no_srca[] = {
2594 0x00, 0xf0, 0x0f, 0x78, 0x00, 0x00, 0x00, 0x00
2595 };
2596
2597 static const bfd_byte insn_mask_Y1_no_dest_no_srca[] = {
2598 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x07, 0x78
2599 };
2600
2601 /* Mask to extract the first source operand of an instruction. */
2602 static const bfd_byte srca_mask_X0[] = {
2603 0xc0, 0x0f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
2604 };
2605
2606 static const bfd_byte srca_mask_X1[] = {
2607 0x00, 0x00, 0x00, 0x00, 0xe0, 0x07, 0x00, 0x00
2608 };
2609
2610 /* Various instructions synthesized to support tls references. */
2611
2612 /* move r0, r0 in the X1 pipe, used for tls le. */
2613 static const bfd_byte insn_tls_le_move_X1[] = {
2614 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x33, 0x08
2615 };
2616
2617 /* move r0, zero in the X0 and X1 pipe, used for tls le. */
2618 static const bfd_byte insn_tls_le_move_zero_X0X1[] = {
2619 0xc0, 0xff, 0xcf, 0x00, 0xe0, 0xff, 0x33, 0x08
2620 };
2621
2622 /* lw r0, r0 in the X1 pipe, used for tls ie. */
2623 static const bfd_byte insn_tls_ie_lw_X1[] = {
2624 0x00, 0x00, 0x00, 0x00, 0x00, 0x70, 0x0b, 0x40
2625 };
2626
2627 /* add r0, r0, tp in various pipes, used for tls ie. */
2628 static const bfd_byte insn_tls_ie_add_X0X1[] = {
2629 0x00, 0x50, 0x0f, 0x00, 0x00, 0xa8, 0x07, 0x08
2630 };
2631 static const bfd_byte insn_tls_ie_add_Y0Y1[] = {
2632 0x00, 0x50, 0x03, 0x08, 0x00, 0xa8, 0x01, 0x8c
2633 };
2634
2635 /* move r0, r0 in various pipes, used for tls gd. */
2636 static const bfd_byte insn_tls_gd_add_X0X1[] = {
2637 0x00, 0xf0, 0xcf, 0x00, 0x00, 0xf8, 0x33, 0x08
2638 };
2639 static const bfd_byte insn_tls_gd_add_Y0Y1[] = {
2640 0x00, 0xf0, 0x0b, 0x18, 0x00, 0xf8, 0x05, 0x9c
2641 };
2642
2643 /* Relocate an TILEPRO ELF section.
2644
2645 The RELOCATE_SECTION function is called by the new ELF backend linker
2646 to handle the relocations for a section.
2647
2648 The relocs are always passed as Rela structures.
2649
2650 This function is responsible for adjusting the section contents as
2651 necessary, and (if generating a relocatable output file) adjusting
2652 the reloc addend as necessary.
2653
2654 This function does not have to worry about setting the reloc
2655 address or the reloc symbol index.
2656
2657 LOCAL_SYMS is a pointer to the swapped in local symbols.
2658
2659 LOCAL_SECTIONS is an array giving the section in the input file
2660 corresponding to the st_shndx field of each local symbol.
2661
2662 The global hash table entry for the global symbols can be found
2663 via elf_sym_hashes (input_bfd).
2664
2665 When generating relocatable output, this function must handle
2666 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2667 going to be the section symbol corresponding to the output
2668 section, which means that the addend must be adjusted
2669 accordingly. */
2670
2671 static bfd_boolean
2672 tilepro_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
2673 bfd *input_bfd, asection *input_section,
2674 bfd_byte *contents, Elf_Internal_Rela *relocs,
2675 Elf_Internal_Sym *local_syms,
2676 asection **local_sections)
2677 {
2678 struct tilepro_elf_link_hash_table *htab;
2679 Elf_Internal_Shdr *symtab_hdr;
2680 struct elf_link_hash_entry **sym_hashes;
2681 bfd_vma *local_got_offsets;
2682 bfd_vma got_base;
2683 asection *sreloc;
2684 Elf_Internal_Rela *rel;
2685 Elf_Internal_Rela *relend;
2686 int num_relocs;
2687
2688 htab = tilepro_elf_hash_table (info);
2689 BFD_ASSERT (htab != NULL);
2690 symtab_hdr = &elf_symtab_hdr (input_bfd);
2691 sym_hashes = elf_sym_hashes (input_bfd);
2692 local_got_offsets = elf_local_got_offsets (input_bfd);
2693
2694 if (elf_hash_table (info)->hgot == NULL)
2695 got_base = 0;
2696 else
2697 got_base = elf_hash_table (info)->hgot->root.u.def.value;
2698
2699 sreloc = elf_section_data (input_section)->sreloc;
2700
2701 rel = relocs;
2702 num_relocs = input_section->reloc_count;
2703 relend = relocs + num_relocs;
2704 for (; rel < relend; rel++)
2705 {
2706 int r_type, tls_type;
2707 bfd_boolean is_tls_iele, is_tls_le;
2708 reloc_howto_type *howto;
2709 unsigned long r_symndx;
2710 struct elf_link_hash_entry *h;
2711 Elf_Internal_Sym *sym;
2712 tilepro_create_func create_func;
2713 asection *sec;
2714 bfd_vma relocation;
2715 bfd_reloc_status_type r;
2716 const char *name;
2717 bfd_vma off;
2718 bfd_boolean is_plt = FALSE;
2719 bfd_boolean resolved_to_zero;
2720 bfd_boolean unresolved_reloc;
2721
2722 r_type = ELF32_R_TYPE (rel->r_info);
2723 if (r_type == R_TILEPRO_GNU_VTINHERIT
2724 || r_type == R_TILEPRO_GNU_VTENTRY)
2725 continue;
2726
2727 if ((unsigned int)r_type >= NELEMS(tilepro_elf_howto_table))
2728 return _bfd_unrecognized_reloc (input_bfd, input_section, r_type);
2729
2730 howto = tilepro_elf_howto_table + r_type;
2731
2732 /* This is a final link. */
2733 r_symndx = ELF32_R_SYM (rel->r_info);
2734 h = NULL;
2735 sym = NULL;
2736 sec = NULL;
2737 unresolved_reloc = FALSE;
2738 if (r_symndx < symtab_hdr->sh_info)
2739 {
2740 sym = local_syms + r_symndx;
2741 sec = local_sections[r_symndx];
2742 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2743 }
2744 else
2745 {
2746 bfd_boolean warned ATTRIBUTE_UNUSED;
2747 bfd_boolean ignored ATTRIBUTE_UNUSED;
2748
2749 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2750 r_symndx, symtab_hdr, sym_hashes,
2751 h, sec, relocation,
2752 unresolved_reloc, warned, ignored);
2753 if (warned)
2754 {
2755 /* To avoid generating warning messages about truncated
2756 relocations, set the relocation's address to be the same as
2757 the start of this section. */
2758 if (input_section->output_section != NULL)
2759 relocation = input_section->output_section->vma;
2760 else
2761 relocation = 0;
2762 }
2763 }
2764
2765 if (sec != NULL && discarded_section (sec))
2766 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2767 rel, 1, relend, howto, 0, contents);
2768
2769 if (bfd_link_relocatable (info))
2770 continue;
2771
2772 if (h != NULL)
2773 name = h->root.root.string;
2774 else
2775 {
2776 name = (bfd_elf_string_from_elf_section
2777 (input_bfd, symtab_hdr->sh_link, sym->st_name));
2778 if (name == NULL || *name == '\0')
2779 name = bfd_section_name (input_bfd, sec);
2780 }
2781
2782 switch (r_type)
2783 {
2784 case R_TILEPRO_TLS_GD_CALL:
2785 case R_TILEPRO_IMM8_X0_TLS_GD_ADD:
2786 case R_TILEPRO_IMM8_Y0_TLS_GD_ADD:
2787 case R_TILEPRO_IMM8_X1_TLS_GD_ADD:
2788 case R_TILEPRO_IMM8_Y1_TLS_GD_ADD:
2789 case R_TILEPRO_IMM16_X0_TLS_GD_HA:
2790 case R_TILEPRO_IMM16_X1_TLS_GD_HA:
2791 case R_TILEPRO_IMM16_X0_TLS_IE_HA:
2792 case R_TILEPRO_IMM16_X1_TLS_IE_HA:
2793 tls_type = GOT_UNKNOWN;
2794 if (h == NULL && local_got_offsets)
2795 tls_type =
2796 _bfd_tilepro_elf_local_got_tls_type (input_bfd) [r_symndx];
2797 else if (h != NULL)
2798 tls_type = tilepro_elf_hash_entry(h)->tls_type;
2799
2800 is_tls_iele = (bfd_link_executable (info) || tls_type == GOT_TLS_IE);
2801 is_tls_le = is_tls_iele && (bfd_link_executable (info)
2802 && (h == NULL || h->dynindx == -1));
2803
2804 if (r_type == R_TILEPRO_TLS_GD_CALL)
2805 {
2806 if (is_tls_le)
2807 {
2808 /* GD -> LE */
2809 tilepro_replace_insn (contents + rel->r_offset,
2810 insn_mask_X1, insn_tls_le_move_X1);
2811 continue;
2812 }
2813 else if (is_tls_iele)
2814 {
2815 /* GD -> IE */
2816 tilepro_replace_insn (contents + rel->r_offset,
2817 insn_mask_X1, insn_tls_ie_lw_X1);
2818 continue;
2819 }
2820
2821 /* GD -> GD */
2822 h = (struct elf_link_hash_entry *)
2823 bfd_link_hash_lookup (info->hash, "__tls_get_addr", FALSE,
2824 FALSE, TRUE);
2825 BFD_ASSERT (h != NULL);
2826 r_type = R_TILEPRO_JOFFLONG_X1_PLT;
2827 howto = tilepro_elf_howto_table + r_type;
2828 }
2829 else if (r_type == R_TILEPRO_IMM16_X0_TLS_GD_HA
2830 || r_type == R_TILEPRO_IMM16_X0_TLS_IE_HA)
2831 {
2832 if (is_tls_le)
2833 tilepro_replace_insn (contents + rel->r_offset, srca_mask_X0,
2834 insn_tls_le_move_zero_X0X1);
2835 }
2836 else if (r_type == R_TILEPRO_IMM16_X1_TLS_GD_HA
2837 || r_type == R_TILEPRO_IMM16_X1_TLS_IE_HA)
2838 {
2839 if (is_tls_le)
2840 tilepro_replace_insn (contents + rel->r_offset, srca_mask_X1,
2841 insn_tls_le_move_zero_X0X1);
2842 }
2843 else
2844 {
2845 const bfd_byte *mask = NULL;
2846 const bfd_byte *add_insn = NULL;
2847
2848 switch (r_type)
2849 {
2850 case R_TILEPRO_IMM8_X0_TLS_GD_ADD:
2851 add_insn = is_tls_iele ? insn_tls_ie_add_X0X1
2852 : insn_tls_gd_add_X0X1;
2853 mask = insn_mask_X0_no_dest_no_srca;
2854 break;
2855 case R_TILEPRO_IMM8_X1_TLS_GD_ADD:
2856 add_insn = is_tls_iele ? insn_tls_ie_add_X0X1
2857 : insn_tls_gd_add_X0X1;
2858 mask = insn_mask_X1_no_dest_no_srca;
2859 break;
2860 case R_TILEPRO_IMM8_Y0_TLS_GD_ADD:
2861 add_insn = is_tls_iele ? insn_tls_ie_add_Y0Y1
2862 : insn_tls_gd_add_Y0Y1;
2863 mask = insn_mask_Y0_no_dest_no_srca;
2864 break;
2865 case R_TILEPRO_IMM8_Y1_TLS_GD_ADD:
2866 add_insn = is_tls_iele ? insn_tls_ie_add_Y0Y1
2867 : insn_tls_gd_add_Y0Y1;
2868 mask = insn_mask_Y1_no_dest_no_srca;
2869 break;
2870 }
2871
2872 tilepro_replace_insn (contents + rel->r_offset, mask, add_insn);
2873
2874 continue;
2875 }
2876 break;
2877 case R_TILEPRO_TLS_IE_LOAD:
2878 if (bfd_link_executable (info) && (h == NULL || h->dynindx == -1))
2879 /* IE -> LE */
2880 tilepro_replace_insn (contents + rel->r_offset,
2881 insn_mask_X1_no_dest_no_srca,
2882 insn_tls_le_move_X1);
2883 else
2884 /* IE -> IE */
2885 tilepro_replace_insn (contents + rel->r_offset,
2886 insn_mask_X1_no_dest_no_srca,
2887 insn_tls_ie_lw_X1);
2888 continue;
2889 break;
2890 default:
2891 break;
2892 }
2893
2894 resolved_to_zero = (h != NULL
2895 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
2896
2897 switch (r_type)
2898 {
2899 case R_TILEPRO_IMM16_X0_GOT:
2900 case R_TILEPRO_IMM16_X1_GOT:
2901 case R_TILEPRO_IMM16_X0_GOT_LO:
2902 case R_TILEPRO_IMM16_X1_GOT_LO:
2903 case R_TILEPRO_IMM16_X0_GOT_HI:
2904 case R_TILEPRO_IMM16_X1_GOT_HI:
2905 case R_TILEPRO_IMM16_X0_GOT_HA:
2906 case R_TILEPRO_IMM16_X1_GOT_HA:
2907 /* Relocation is to the entry for this symbol in the global
2908 offset table. */
2909 if (htab->elf.sgot == NULL)
2910 abort ();
2911
2912 if (h != NULL)
2913 {
2914 bfd_boolean dyn;
2915
2916 off = h->got.offset;
2917 BFD_ASSERT (off != (bfd_vma) -1);
2918 dyn = elf_hash_table (info)->dynamic_sections_created;
2919
2920 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2921 bfd_link_pic (info),
2922 h)
2923 || (bfd_link_pic (info)
2924 && SYMBOL_REFERENCES_LOCAL (info, h)))
2925 {
2926 /* This is actually a static link, or it is a
2927 -Bsymbolic link and the symbol is defined
2928 locally, or the symbol was forced to be local
2929 because of a version file. We must initialize
2930 this entry in the global offset table. Since the
2931 offset must always be a multiple
2932 of 4 for 32-bit, we use the least significant bit
2933 to record whether we have initialized it already.
2934
2935 When doing a dynamic link, we create a .rela.got
2936 relocation entry to initialize the value. This
2937 is done in the finish_dynamic_symbol routine. */
2938 if ((off & 1) != 0)
2939 off &= ~1;
2940 else
2941 {
2942 bfd_put_32 (output_bfd, relocation,
2943 htab->elf.sgot->contents + off);
2944 h->got.offset |= 1;
2945 }
2946 }
2947 else
2948 unresolved_reloc = FALSE;
2949 }
2950 else
2951 {
2952 BFD_ASSERT (local_got_offsets != NULL
2953 && local_got_offsets[r_symndx] != (bfd_vma) -1);
2954
2955 off = local_got_offsets[r_symndx];
2956
2957 /* The offset must always be a multiple of 4 on 32-bit.
2958 We use the least significant bit to record
2959 whether we have already processed this entry. */
2960 if ((off & 1) != 0)
2961 off &= ~1;
2962 else
2963 {
2964 if (bfd_link_pic (info))
2965 {
2966 asection *s;
2967 Elf_Internal_Rela outrel;
2968
2969 /* We need to generate a R_TILEPRO_RELATIVE reloc
2970 for the dynamic linker. */
2971 s = htab->elf.srelgot;
2972 BFD_ASSERT (s != NULL);
2973
2974 outrel.r_offset = (htab->elf.sgot->output_section->vma
2975 + htab->elf.sgot->output_offset
2976 + off);
2977 outrel.r_info = ELF32_R_INFO (0, R_TILEPRO_RELATIVE);
2978 outrel.r_addend = relocation;
2979 relocation = 0;
2980 tilepro_elf_append_rela_32 (output_bfd, s, &outrel);
2981 }
2982
2983 bfd_put_32 (output_bfd, relocation,
2984 htab->elf.sgot->contents + off);
2985 local_got_offsets[r_symndx] |= 1;
2986 }
2987 }
2988 relocation = off - got_base;
2989 break;
2990
2991 case R_TILEPRO_JOFFLONG_X1_PLT:
2992 /* Relocation is to the entry for this symbol in the
2993 procedure linkage table. */
2994 BFD_ASSERT (h != NULL);
2995
2996 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL)
2997 {
2998 /* We didn't make a PLT entry for this symbol. This
2999 happens when statically linking PIC code, or when
3000 using -Bsymbolic. */
3001 break;
3002 }
3003
3004 relocation = (htab->elf.splt->output_section->vma
3005 + htab->elf.splt->output_offset
3006 + h->plt.offset);
3007 unresolved_reloc = FALSE;
3008 break;
3009
3010 case R_TILEPRO_32_PCREL:
3011 case R_TILEPRO_16_PCREL:
3012 case R_TILEPRO_8_PCREL:
3013 case R_TILEPRO_IMM16_X0_PCREL:
3014 case R_TILEPRO_IMM16_X1_PCREL:
3015 case R_TILEPRO_IMM16_X0_LO_PCREL:
3016 case R_TILEPRO_IMM16_X1_LO_PCREL:
3017 case R_TILEPRO_IMM16_X0_HI_PCREL:
3018 case R_TILEPRO_IMM16_X1_HI_PCREL:
3019 case R_TILEPRO_IMM16_X0_HA_PCREL:
3020 case R_TILEPRO_IMM16_X1_HA_PCREL:
3021 if (h != NULL
3022 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3023 break;
3024 /* Fall through. */
3025 case R_TILEPRO_32:
3026 case R_TILEPRO_16:
3027 case R_TILEPRO_8:
3028 case R_TILEPRO_LO16:
3029 case R_TILEPRO_HI16:
3030 case R_TILEPRO_HA16:
3031 case R_TILEPRO_COPY:
3032 case R_TILEPRO_GLOB_DAT:
3033 case R_TILEPRO_JMP_SLOT:
3034 case R_TILEPRO_RELATIVE:
3035 case R_TILEPRO_BROFF_X1:
3036 case R_TILEPRO_JOFFLONG_X1:
3037 case R_TILEPRO_IMM8_X0:
3038 case R_TILEPRO_IMM8_Y0:
3039 case R_TILEPRO_IMM8_X1:
3040 case R_TILEPRO_IMM8_Y1:
3041 case R_TILEPRO_DEST_IMM8_X1:
3042 case R_TILEPRO_MT_IMM15_X1:
3043 case R_TILEPRO_MF_IMM15_X1:
3044 case R_TILEPRO_IMM16_X0:
3045 case R_TILEPRO_IMM16_X1:
3046 case R_TILEPRO_IMM16_X0_LO:
3047 case R_TILEPRO_IMM16_X1_LO:
3048 case R_TILEPRO_IMM16_X0_HI:
3049 case R_TILEPRO_IMM16_X1_HI:
3050 case R_TILEPRO_IMM16_X0_HA:
3051 case R_TILEPRO_IMM16_X1_HA:
3052 case R_TILEPRO_MMSTART_X0:
3053 case R_TILEPRO_MMEND_X0:
3054 case R_TILEPRO_MMSTART_X1:
3055 case R_TILEPRO_MMEND_X1:
3056 case R_TILEPRO_SHAMT_X0:
3057 case R_TILEPRO_SHAMT_X1:
3058 case R_TILEPRO_SHAMT_Y0:
3059 case R_TILEPRO_SHAMT_Y1:
3060 if ((input_section->flags & SEC_ALLOC) == 0)
3061 break;
3062
3063 if ((bfd_link_pic (info)
3064 && (h == NULL
3065 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3066 && !resolved_to_zero)
3067 || h->root.type != bfd_link_hash_undefweak)
3068 && (! howto->pc_relative
3069 || !SYMBOL_CALLS_LOCAL (info, h)))
3070 || (!bfd_link_pic (info)
3071 && h != NULL
3072 && h->dynindx != -1
3073 && !h->non_got_ref
3074 && ((h->def_dynamic
3075 && !h->def_regular)
3076 || h->root.type == bfd_link_hash_undefweak
3077 || h->root.type == bfd_link_hash_undefined)))
3078 {
3079 Elf_Internal_Rela outrel;
3080 bfd_boolean skip, relocate = FALSE;
3081
3082 /* When generating a shared object, these relocations
3083 are copied into the output file to be resolved at run
3084 time. */
3085
3086 BFD_ASSERT (sreloc != NULL);
3087
3088 skip = FALSE;
3089
3090 outrel.r_offset =
3091 _bfd_elf_section_offset (output_bfd, info, input_section,
3092 rel->r_offset);
3093 if (outrel.r_offset == (bfd_vma) -1)
3094 skip = TRUE;
3095 else if (outrel.r_offset == (bfd_vma) -2)
3096 skip = TRUE, relocate = TRUE;
3097 outrel.r_offset += (input_section->output_section->vma
3098 + input_section->output_offset);
3099
3100 switch (r_type)
3101 {
3102 case R_TILEPRO_32_PCREL:
3103 case R_TILEPRO_16_PCREL:
3104 case R_TILEPRO_8_PCREL:
3105 /* If the symbol is not dynamic, we should not keep
3106 a dynamic relocation. But an .rela.* slot has been
3107 allocated for it, output R_TILEPRO_NONE.
3108 FIXME: Add code tracking needed dynamic relocs as
3109 e.g. i386 has. */
3110 if (h->dynindx == -1)
3111 skip = TRUE, relocate = TRUE;
3112 break;
3113 }
3114
3115 if (skip)
3116 memset (&outrel, 0, sizeof outrel);
3117 /* h->dynindx may be -1 if the symbol was marked to
3118 become local. */
3119 else if (h != NULL &&
3120 h->dynindx != -1
3121 && (! is_plt
3122 || !bfd_link_pic (info)
3123 || !SYMBOLIC_BIND (info, h)
3124 || !h->def_regular))
3125 {
3126 BFD_ASSERT (h->dynindx != -1);
3127 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
3128 outrel.r_addend = rel->r_addend;
3129 }
3130 else
3131 {
3132 if (r_type == R_TILEPRO_32)
3133 {
3134 outrel.r_info = ELF32_R_INFO (0, R_TILEPRO_RELATIVE);
3135 outrel.r_addend = relocation + rel->r_addend;
3136 }
3137 else
3138 {
3139 long indx;
3140
3141 outrel.r_addend = relocation + rel->r_addend;
3142
3143 if (is_plt)
3144 sec = htab->elf.splt;
3145
3146 if (bfd_is_abs_section (sec))
3147 indx = 0;
3148 else if (sec == NULL || sec->owner == NULL)
3149 {
3150 bfd_set_error (bfd_error_bad_value);
3151 return FALSE;
3152 }
3153 else
3154 {
3155 asection *osec;
3156
3157 /* We are turning this relocation into one
3158 against a section symbol. It would be
3159 proper to subtract the symbol's value,
3160 osec->vma, from the emitted reloc addend,
3161 but ld.so expects buggy relocs. */
3162 osec = sec->output_section;
3163 indx = elf_section_data (osec)->dynindx;
3164
3165 if (indx == 0)
3166 {
3167 osec = htab->elf.text_index_section;
3168 indx = elf_section_data (osec)->dynindx;
3169 }
3170
3171 /* FIXME: we really should be able to link non-pic
3172 shared libraries. */
3173 if (indx == 0)
3174 {
3175 BFD_FAIL ();
3176 _bfd_error_handler
3177 (_("%B: probably compiled without -fPIC?"),
3178 input_bfd);
3179 bfd_set_error (bfd_error_bad_value);
3180 return FALSE;
3181 }
3182 }
3183
3184 outrel.r_info = ELF32_R_INFO (indx, r_type);
3185 }
3186 }
3187
3188 tilepro_elf_append_rela_32 (output_bfd, sreloc, &outrel);
3189
3190 /* This reloc will be computed at runtime, so there's no
3191 need to do anything now. */
3192 if (! relocate)
3193 continue;
3194 }
3195 break;
3196
3197 case R_TILEPRO_IMM16_X0_TLS_LE:
3198 case R_TILEPRO_IMM16_X1_TLS_LE:
3199 case R_TILEPRO_IMM16_X0_TLS_LE_LO:
3200 case R_TILEPRO_IMM16_X1_TLS_LE_LO:
3201 case R_TILEPRO_IMM16_X0_TLS_LE_HI:
3202 case R_TILEPRO_IMM16_X1_TLS_LE_HI:
3203 case R_TILEPRO_IMM16_X0_TLS_LE_HA:
3204 case R_TILEPRO_IMM16_X1_TLS_LE_HA:
3205 if (!bfd_link_executable (info))
3206 {
3207 Elf_Internal_Rela outrel;
3208 bfd_boolean skip;
3209
3210 BFD_ASSERT (sreloc != NULL);
3211 skip = FALSE;
3212 outrel.r_offset =
3213 _bfd_elf_section_offset (output_bfd, info, input_section,
3214 rel->r_offset);
3215 if (outrel.r_offset == (bfd_vma) -1)
3216 skip = TRUE;
3217 else if (outrel.r_offset == (bfd_vma) -2)
3218 skip = TRUE;
3219 outrel.r_offset += (input_section->output_section->vma
3220 + input_section->output_offset);
3221 if (skip)
3222 memset (&outrel, 0, sizeof outrel);
3223 else
3224 {
3225 outrel.r_info = ELF32_R_INFO (0, r_type);
3226 outrel.r_addend = relocation - dtpoff_base (info)
3227 + rel->r_addend;
3228 }
3229
3230 tilepro_elf_append_rela_32 (output_bfd, sreloc, &outrel);
3231 continue;
3232 }
3233 relocation = tpoff (info, relocation);
3234 break;
3235
3236 case R_TILEPRO_IMM16_X0_TLS_GD:
3237 case R_TILEPRO_IMM16_X1_TLS_GD:
3238 case R_TILEPRO_IMM16_X0_TLS_GD_LO:
3239 case R_TILEPRO_IMM16_X1_TLS_GD_LO:
3240 case R_TILEPRO_IMM16_X0_TLS_GD_HI:
3241 case R_TILEPRO_IMM16_X1_TLS_GD_HI:
3242 case R_TILEPRO_IMM16_X0_TLS_GD_HA:
3243 case R_TILEPRO_IMM16_X1_TLS_GD_HA:
3244 case R_TILEPRO_IMM16_X0_TLS_IE:
3245 case R_TILEPRO_IMM16_X1_TLS_IE:
3246 case R_TILEPRO_IMM16_X0_TLS_IE_LO:
3247 case R_TILEPRO_IMM16_X1_TLS_IE_LO:
3248 case R_TILEPRO_IMM16_X0_TLS_IE_HI:
3249 case R_TILEPRO_IMM16_X1_TLS_IE_HI:
3250 case R_TILEPRO_IMM16_X0_TLS_IE_HA:
3251 case R_TILEPRO_IMM16_X1_TLS_IE_HA:
3252 r_type = tilepro_elf_tls_transition (info, r_type, h == NULL);
3253 tls_type = GOT_UNKNOWN;
3254 if (h == NULL && local_got_offsets)
3255 tls_type
3256 = _bfd_tilepro_elf_local_got_tls_type (input_bfd) [r_symndx];
3257 else if (h != NULL)
3258 {
3259 tls_type = tilepro_elf_hash_entry(h)->tls_type;
3260 if (bfd_link_executable (info)
3261 && h->dynindx == -1
3262 && tls_type == GOT_TLS_IE)
3263 r_type = tilepro_tls_translate_to_le (r_type);
3264 }
3265 if (tls_type == GOT_TLS_IE)
3266 r_type = tilepro_tls_translate_to_ie (r_type);
3267
3268 if (r_type == R_TILEPRO_IMM16_X0_TLS_LE
3269 || r_type == R_TILEPRO_IMM16_X1_TLS_LE
3270 || r_type == R_TILEPRO_IMM16_X0_TLS_LE_LO
3271 || r_type == R_TILEPRO_IMM16_X1_TLS_LE_LO
3272 || r_type == R_TILEPRO_IMM16_X0_TLS_LE_HI
3273 || r_type == R_TILEPRO_IMM16_X1_TLS_LE_HI
3274 || r_type == R_TILEPRO_IMM16_X0_TLS_LE_HA
3275 || r_type == R_TILEPRO_IMM16_X1_TLS_LE_HA)
3276 {
3277 relocation = tpoff (info, relocation);
3278 break;
3279 }
3280
3281 if (h != NULL)
3282 {
3283 off = h->got.offset;
3284 h->got.offset |= 1;
3285 }
3286 else
3287 {
3288 BFD_ASSERT (local_got_offsets != NULL);
3289 off = local_got_offsets[r_symndx];
3290 local_got_offsets[r_symndx] |= 1;
3291 }
3292
3293 if (htab->elf.sgot == NULL)
3294 abort ();
3295
3296 if ((off & 1) != 0)
3297 off &= ~1;
3298 else
3299 {
3300 Elf_Internal_Rela outrel;
3301 int indx = 0;
3302 bfd_boolean need_relocs = FALSE;
3303
3304 if (htab->elf.srelgot == NULL)
3305 abort ();
3306
3307 if (h != NULL)
3308 {
3309 bfd_boolean dyn;
3310 dyn = htab->elf.dynamic_sections_created;
3311
3312 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3313 bfd_link_pic (info),
3314 h)
3315 && (!bfd_link_pic (info)
3316 || !SYMBOL_REFERENCES_LOCAL (info, h)))
3317 {
3318 indx = h->dynindx;
3319 }
3320 }
3321
3322 /* The GOT entries have not been initialized yet. Do it
3323 now, and emit any relocations. */
3324 if ((bfd_link_pic (info) || indx != 0)
3325 && (h == NULL
3326 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3327 || h->root.type != bfd_link_hash_undefweak))
3328 need_relocs = TRUE;
3329
3330 switch (r_type)
3331 {
3332 case R_TILEPRO_IMM16_X0_TLS_IE:
3333 case R_TILEPRO_IMM16_X1_TLS_IE:
3334 case R_TILEPRO_IMM16_X0_TLS_IE_LO:
3335 case R_TILEPRO_IMM16_X1_TLS_IE_LO:
3336 case R_TILEPRO_IMM16_X0_TLS_IE_HI:
3337 case R_TILEPRO_IMM16_X1_TLS_IE_HI:
3338 case R_TILEPRO_IMM16_X0_TLS_IE_HA:
3339 case R_TILEPRO_IMM16_X1_TLS_IE_HA:
3340 if (need_relocs) {
3341 bfd_put_32 (output_bfd, 0, htab->elf.sgot->contents + off);
3342 outrel.r_offset = (htab->elf.sgot->output_section->vma
3343 + htab->elf.sgot->output_offset + off);
3344 outrel.r_addend = 0;
3345 if (indx == 0)
3346 outrel.r_addend = relocation - dtpoff_base (info);
3347 outrel.r_info = ELF32_R_INFO (indx, R_TILEPRO_TLS_TPOFF32);
3348 tilepro_elf_append_rela_32 (output_bfd, htab->elf.srelgot,
3349 &outrel);
3350 } else {
3351 bfd_put_32 (output_bfd, tpoff (info, relocation),
3352 htab->elf.sgot->contents + off);
3353 }
3354 break;
3355
3356 case R_TILEPRO_IMM16_X0_TLS_GD:
3357 case R_TILEPRO_IMM16_X1_TLS_GD:
3358 case R_TILEPRO_IMM16_X0_TLS_GD_LO:
3359 case R_TILEPRO_IMM16_X1_TLS_GD_LO:
3360 case R_TILEPRO_IMM16_X0_TLS_GD_HI:
3361 case R_TILEPRO_IMM16_X1_TLS_GD_HI:
3362 case R_TILEPRO_IMM16_X0_TLS_GD_HA:
3363 case R_TILEPRO_IMM16_X1_TLS_GD_HA:
3364 if (need_relocs) {
3365 outrel.r_offset = (htab->elf.sgot->output_section->vma
3366 + htab->elf.sgot->output_offset + off);
3367 outrel.r_addend = 0;
3368 outrel.r_info = ELF32_R_INFO (indx, R_TILEPRO_TLS_DTPMOD32);
3369 bfd_put_32 (output_bfd, 0, htab->elf.sgot->contents + off);
3370 tilepro_elf_append_rela_32 (output_bfd, htab->elf.srelgot,
3371 &outrel);
3372 if (indx == 0)
3373 {
3374 BFD_ASSERT (! unresolved_reloc);
3375 bfd_put_32 (output_bfd,
3376 relocation - dtpoff_base (info),
3377 (htab->elf.sgot->contents + off +
3378 TILEPRO_BYTES_PER_WORD));
3379 }
3380 else
3381 {
3382 bfd_put_32 (output_bfd, 0,
3383 (htab->elf.sgot->contents + off +
3384 TILEPRO_BYTES_PER_WORD));
3385 outrel.r_info = ELF32_R_INFO (indx,
3386 R_TILEPRO_TLS_DTPOFF32);
3387 outrel.r_offset += TILEPRO_BYTES_PER_WORD;
3388 tilepro_elf_append_rela_32 (output_bfd,
3389 htab->elf.srelgot, &outrel);
3390 }
3391 }
3392
3393 else {
3394 /* If we are not emitting relocations for a
3395 general dynamic reference, then we must be in a
3396 static link or an executable link with the
3397 symbol binding locally. Mark it as belonging
3398 to module 1, the executable. */
3399 bfd_put_32 (output_bfd, 1,
3400 htab->elf.sgot->contents + off );
3401 bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
3402 htab->elf.sgot->contents + off +
3403 TILEPRO_BYTES_PER_WORD);
3404 }
3405 break;
3406 }
3407 }
3408
3409 if (off >= (bfd_vma) -2)
3410 abort ();
3411
3412 relocation = off - got_base;
3413 unresolved_reloc = FALSE;
3414 howto = tilepro_elf_howto_table + r_type;
3415 break;
3416
3417 default:
3418 break;
3419 }
3420
3421 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3422 because such sections are not SEC_ALLOC and thus ld.so will
3423 not process them. */
3424 if (unresolved_reloc
3425 && !((input_section->flags & SEC_DEBUGGING) != 0
3426 && h->def_dynamic)
3427 && _bfd_elf_section_offset (output_bfd, info, input_section,
3428 rel->r_offset) != (bfd_vma) -1)
3429 _bfd_error_handler
3430 /* xgettext:c-format */
3431 (_("%B(%A+%#Lx): unresolvable %s relocation against symbol `%s'"),
3432 input_bfd,
3433 input_section,
3434 rel->r_offset,
3435 howto->name,
3436 h->root.root.string);
3437
3438 r = bfd_reloc_continue;
3439
3440 /* For the _HA types, we add 0x8000 so that if bit 15 is set,
3441 * we will increment bit 16. The howto->rightshift takes care
3442 * of the rest for us. */
3443 switch (r_type)
3444 {
3445 case R_TILEPRO_HA16:
3446 case R_TILEPRO_IMM16_X0_HA:
3447 case R_TILEPRO_IMM16_X1_HA:
3448 case R_TILEPRO_IMM16_X0_HA_PCREL:
3449 case R_TILEPRO_IMM16_X1_HA_PCREL:
3450 case R_TILEPRO_IMM16_X0_GOT_HA:
3451 case R_TILEPRO_IMM16_X1_GOT_HA:
3452 case R_TILEPRO_IMM16_X0_TLS_GD_HA:
3453 case R_TILEPRO_IMM16_X1_TLS_GD_HA:
3454 case R_TILEPRO_IMM16_X0_TLS_IE_HA:
3455 case R_TILEPRO_IMM16_X1_TLS_IE_HA:
3456 relocation += 0x8000;
3457 break;
3458 }
3459
3460 /* Get the operand creation function, if any. */
3461 create_func = reloc_to_create_func[r_type];
3462 if (create_func == NULL)
3463 {
3464 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3465 contents, rel->r_offset,
3466 relocation, rel->r_addend);
3467 }
3468 else
3469 {
3470 if (howto->pc_relative)
3471 {
3472 relocation -=
3473 input_section->output_section->vma + input_section->output_offset;
3474 if (howto->pcrel_offset)
3475 relocation -= rel->r_offset;
3476 }
3477
3478 bfd_byte *data;
3479
3480 /* Add the relocation addend if any to the final target value */
3481 relocation += rel->r_addend;
3482
3483 /* Do basic range checking */
3484 r = bfd_check_overflow (howto->complain_on_overflow,
3485 howto->bitsize,
3486 howto->rightshift,
3487 32,
3488 relocation);
3489
3490 /*
3491 * Write the relocated value out into the raw section data.
3492 * Don't put a relocation out in the .rela section.
3493 */
3494 tilepro_bundle_bits mask = create_func(-1);
3495 tilepro_bundle_bits value = create_func(relocation >> howto->rightshift);
3496
3497 /* Only touch bytes while the mask is not 0, so we
3498 don't write to out of bounds memory if this is actually
3499 a 16-bit switch instruction. */
3500 for (data = contents + rel->r_offset; mask != 0; data++)
3501 {
3502 bfd_byte byte_mask = (bfd_byte)mask;
3503 *data = (*data & ~byte_mask) | ((bfd_byte)value & byte_mask);
3504 mask >>= 8;
3505 value >>= 8;
3506 }
3507 }
3508
3509 if (r != bfd_reloc_ok)
3510 {
3511 const char *msg = NULL;
3512
3513 switch (r)
3514 {
3515 case bfd_reloc_overflow:
3516 (*info->callbacks->reloc_overflow)
3517 (info, (h ? &h->root : NULL), name, howto->name,
3518 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
3519 break;
3520
3521 case bfd_reloc_undefined:
3522 (*info->callbacks->undefined_symbol)
3523 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
3524 break;
3525
3526 case bfd_reloc_outofrange:
3527 msg = _("internal error: out of range error");
3528 break;
3529
3530 case bfd_reloc_notsupported:
3531 msg = _("internal error: unsupported relocation error");
3532 break;
3533
3534 case bfd_reloc_dangerous:
3535 msg = _("internal error: dangerous relocation");
3536 break;
3537
3538 default:
3539 msg = _("internal error: unknown error");
3540 break;
3541 }
3542
3543 if (msg)
3544 (*info->callbacks->warning) (info, msg, name, input_bfd,
3545 input_section, rel->r_offset);
3546 }
3547 }
3548
3549 return TRUE;
3550 }
3551
3552 /* Finish up dynamic symbol handling. We set the contents of various
3553 dynamic sections here. */
3554
3555 static bfd_boolean
3556 tilepro_elf_finish_dynamic_symbol (bfd *output_bfd,
3557 struct bfd_link_info *info,
3558 struct elf_link_hash_entry *h,
3559 Elf_Internal_Sym *sym)
3560 {
3561 struct tilepro_elf_link_hash_table *htab;
3562
3563 htab = tilepro_elf_hash_table (info);
3564 BFD_ASSERT (htab != NULL);
3565
3566 if (h->plt.offset != (bfd_vma) -1)
3567 {
3568 asection *splt;
3569 asection *srela;
3570 asection *sgotplt;
3571 Elf_Internal_Rela rela;
3572 bfd_byte *loc;
3573 bfd_vma r_offset;
3574
3575 int rela_index;
3576
3577 /* This symbol has an entry in the PLT. Set it up. */
3578
3579 BFD_ASSERT (h->dynindx != -1);
3580
3581 splt = htab->elf.splt;
3582 srela = htab->elf.srelplt;
3583 sgotplt = htab->elf.sgotplt;
3584
3585 if (splt == NULL || srela == NULL)
3586 abort ();
3587
3588 /* Fill in the entry in the procedure linkage table. */
3589 rela_index = tilepro_plt_entry_build (splt, sgotplt, h->plt.offset,
3590 &r_offset);
3591
3592 /* Fill in the entry in the global offset table, which initially points
3593 to the beginning of the plt. */
3594 bfd_put_32 (output_bfd, splt->output_section->vma + splt->output_offset,
3595 sgotplt->contents + r_offset);
3596
3597 /* Fill in the entry in the .rela.plt section. */
3598 rela.r_offset = (sgotplt->output_section->vma
3599 + sgotplt->output_offset
3600 + r_offset);
3601 rela.r_addend = 0;
3602 rela.r_info = ELF32_R_INFO (h->dynindx, R_TILEPRO_JMP_SLOT);
3603
3604 loc = srela->contents + rela_index * sizeof (Elf32_External_Rela);
3605 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3606
3607 if (!h->def_regular)
3608 {
3609 /* Mark the symbol as undefined, rather than as defined in
3610 the .plt section. Leave the value alone. */
3611 sym->st_shndx = SHN_UNDEF;
3612 /* If the symbol is weak, we do need to clear the value.
3613 Otherwise, the PLT entry would provide a definition for
3614 the symbol even if the symbol wasn't defined anywhere,
3615 and so the symbol would never be NULL. */
3616 if (!h->ref_regular_nonweak)
3617 sym->st_value = 0;
3618 }
3619 }
3620
3621 if (h->got.offset != (bfd_vma) -1
3622 && tilepro_elf_hash_entry(h)->tls_type != GOT_TLS_GD
3623 && tilepro_elf_hash_entry(h)->tls_type != GOT_TLS_IE)
3624 {
3625 asection *sgot;
3626 asection *srela;
3627 Elf_Internal_Rela rela;
3628
3629 /* This symbol has an entry in the GOT. Set it up. */
3630
3631 sgot = htab->elf.sgot;
3632 srela = htab->elf.srelgot;
3633 BFD_ASSERT (sgot != NULL && srela != NULL);
3634
3635 rela.r_offset = (sgot->output_section->vma
3636 + sgot->output_offset
3637 + (h->got.offset &~ (bfd_vma) 1));
3638
3639 /* If this is a -Bsymbolic link, and the symbol is defined
3640 locally, we just want to emit a RELATIVE reloc. Likewise if
3641 the symbol was forced to be local because of a version file.
3642 The entry in the global offset table will already have been
3643 initialized in the relocate_section function. */
3644 if (bfd_link_pic (info)
3645 && (info->symbolic || h->dynindx == -1)
3646 && h->def_regular)
3647 {
3648 asection *sec = h->root.u.def.section;
3649 rela.r_info = ELF32_R_INFO (0, R_TILEPRO_RELATIVE);
3650 rela.r_addend = (h->root.u.def.value
3651 + sec->output_section->vma
3652 + sec->output_offset);
3653 }
3654 else
3655 {
3656 rela.r_info = ELF32_R_INFO (h->dynindx, R_TILEPRO_GLOB_DAT);
3657 rela.r_addend = 0;
3658 }
3659
3660 bfd_put_32 (output_bfd, 0,
3661 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
3662 tilepro_elf_append_rela_32 (output_bfd, srela, &rela);
3663 }
3664
3665 if (h->needs_copy)
3666 {
3667 asection *s;
3668 Elf_Internal_Rela rela;
3669
3670 /* This symbols needs a copy reloc. Set it up. */
3671 BFD_ASSERT (h->dynindx != -1);
3672
3673 rela.r_offset = (h->root.u.def.value
3674 + h->root.u.def.section->output_section->vma
3675 + h->root.u.def.section->output_offset);
3676 rela.r_info = ELF32_R_INFO (h->dynindx, R_TILEPRO_COPY);
3677 rela.r_addend = 0;
3678 if (h->root.u.def.section == htab->elf.sdynrelro)
3679 s = htab->elf.sreldynrelro;
3680 else
3681 s = htab->elf.srelbss;
3682 tilepro_elf_append_rela_32 (output_bfd, s, &rela);
3683 }
3684
3685 /* Mark some specially defined symbols as absolute. */
3686 if (h == htab->elf.hdynamic
3687 || (h == htab->elf.hgot || h == htab->elf.hplt))
3688 sym->st_shndx = SHN_ABS;
3689
3690 return TRUE;
3691 }
3692
3693 /* Finish up the dynamic sections. */
3694
3695 static bfd_boolean
3696 tilepro_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
3697 bfd *dynobj, asection *sdyn,
3698 asection *splt ATTRIBUTE_UNUSED)
3699 {
3700 Elf32_External_Dyn *dyncon, *dynconend;
3701 struct tilepro_elf_link_hash_table *htab;
3702
3703 htab = tilepro_elf_hash_table (info);
3704 BFD_ASSERT (htab != NULL);
3705 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3706 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3707 for (; dyncon < dynconend; dyncon++)
3708 {
3709 Elf_Internal_Dyn dyn;
3710 asection *s;
3711
3712 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3713
3714 switch (dyn.d_tag)
3715 {
3716 case DT_PLTGOT:
3717 s = htab->elf.sgotplt;
3718 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3719 break;
3720 case DT_JMPREL:
3721 s = htab->elf.srelplt;
3722 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3723 break;
3724 case DT_PLTRELSZ:
3725 s = htab->elf.srelplt;
3726 dyn.d_un.d_val = s->size;
3727 break;
3728 default:
3729 continue;
3730 }
3731
3732 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3733 }
3734 return TRUE;
3735 }
3736
3737 static bfd_boolean
3738 tilepro_elf_finish_dynamic_sections (bfd *output_bfd,
3739 struct bfd_link_info *info)
3740 {
3741 bfd *dynobj;
3742 asection *sdyn;
3743 struct tilepro_elf_link_hash_table *htab;
3744
3745 htab = tilepro_elf_hash_table (info);
3746 BFD_ASSERT (htab != NULL);
3747 dynobj = htab->elf.dynobj;
3748
3749 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
3750
3751 if (elf_hash_table (info)->dynamic_sections_created)
3752 {
3753 asection *splt;
3754 bfd_boolean ret;
3755
3756 splt = htab->elf.splt;
3757 BFD_ASSERT (splt != NULL && sdyn != NULL);
3758
3759 ret = tilepro_finish_dyn (output_bfd, info, dynobj, sdyn, splt);
3760
3761 if (!ret)
3762 return ret;
3763
3764 /* Fill in the first entry in the procedure linkage table. */
3765 if (splt->size > 0)
3766 {
3767 memcpy (splt->contents, tilepro_plt0_entry, PLT_HEADER_SIZE);
3768 memset (splt->contents + PLT_HEADER_SIZE, 0,
3769 PLT_ENTRY_SIZE - PLT_HEADER_SIZE);
3770 }
3771
3772 if (elf_section_data (splt->output_section) != NULL)
3773 elf_section_data (splt->output_section)->this_hdr.sh_entsize
3774 = PLT_ENTRY_SIZE;
3775 }
3776
3777 if (htab->elf.sgotplt)
3778 {
3779 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
3780 {
3781 _bfd_error_handler
3782 (_("discarded output section: `%A'"), htab->elf.sgotplt);
3783 return FALSE;
3784 }
3785
3786 if (htab->elf.sgotplt->size > 0)
3787 {
3788 /* Write the first two entries in .got.plt, needed for the dynamic
3789 linker. */
3790 bfd_put_32 (output_bfd, (bfd_vma) -1,
3791 htab->elf.sgotplt->contents);
3792 bfd_put_32 (output_bfd, (bfd_vma) 0,
3793 htab->elf.sgotplt->contents + GOT_ENTRY_SIZE);
3794 }
3795
3796 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize
3797 = GOT_ENTRY_SIZE;
3798 }
3799
3800 if (htab->elf.sgot)
3801 {
3802 if (htab->elf.sgot->size > 0)
3803 {
3804 /* Set the first entry in the global offset table to the address of
3805 the dynamic section. */
3806 bfd_vma val = (sdyn ?
3807 sdyn->output_section->vma + sdyn->output_offset :
3808 0);
3809 bfd_put_32 (output_bfd, val, htab->elf.sgot->contents);
3810 }
3811
3812 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize
3813 = GOT_ENTRY_SIZE;
3814 }
3815
3816 return TRUE;
3817 }
3818
3819 \f
3820
3821 /* Return address for Ith PLT stub in section PLT, for relocation REL
3822 or (bfd_vma) -1 if it should not be included. */
3823
3824 static bfd_vma
3825 tilepro_elf_plt_sym_val (bfd_vma i, const asection *plt,
3826 const arelent *rel ATTRIBUTE_UNUSED)
3827 {
3828 return plt->vma + (i + 1) * PLT_ENTRY_SIZE;
3829 }
3830
3831 static enum elf_reloc_type_class
3832 tilepro_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3833 const asection *rel_sec ATTRIBUTE_UNUSED,
3834 const Elf_Internal_Rela *rela)
3835 {
3836 switch ((int) ELF32_R_TYPE (rela->r_info))
3837 {
3838 case R_TILEPRO_RELATIVE:
3839 return reloc_class_relative;
3840 case R_TILEPRO_JMP_SLOT:
3841 return reloc_class_plt;
3842 case R_TILEPRO_COPY:
3843 return reloc_class_copy;
3844 default:
3845 return reloc_class_normal;
3846 }
3847 }
3848
3849 static int
3850 tilepro_additional_program_headers (bfd *abfd,
3851 struct bfd_link_info *info ATTRIBUTE_UNUSED)
3852 {
3853 /* Each .intrpt section specified by the user adds another PT_LOAD
3854 header since the sections are discontiguous. */
3855 static const char intrpt_sections[4][9] =
3856 {
3857 ".intrpt0", ".intrpt1", ".intrpt2", ".intrpt3"
3858 };
3859 int count = 0;
3860 int i;
3861
3862 for (i = 0; i < 4; i++)
3863 {
3864 asection *sec = bfd_get_section_by_name (abfd, intrpt_sections[i]);
3865 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
3866 ++count;
3867 }
3868
3869 /* Add four "padding" headers in to leave room in case a custom linker
3870 script does something fancy. Otherwise ld complains that it ran
3871 out of program headers and refuses to link. */
3872 count += 4;
3873
3874 return count;
3875 }
3876
3877 #define ELF_ARCH bfd_arch_tilepro
3878 #define ELF_TARGET_ID TILEPRO_ELF_DATA
3879 #define ELF_MACHINE_CODE EM_TILEPRO
3880 #define ELF_MAXPAGESIZE 0x10000
3881 #define ELF_COMMONPAGESIZE 0x10000
3882
3883 #define TARGET_LITTLE_SYM tilepro_elf32_vec
3884 #define TARGET_LITTLE_NAME "elf32-tilepro"
3885
3886 #define elf_backend_reloc_type_class tilepro_reloc_type_class
3887
3888 #define bfd_elf32_bfd_reloc_name_lookup tilepro_reloc_name_lookup
3889 #define bfd_elf32_bfd_link_hash_table_create tilepro_elf_link_hash_table_create
3890 #define bfd_elf32_bfd_reloc_type_lookup tilepro_reloc_type_lookup
3891
3892 #define elf_backend_copy_indirect_symbol tilepro_elf_copy_indirect_symbol
3893 #define elf_backend_create_dynamic_sections tilepro_elf_create_dynamic_sections
3894 #define elf_backend_check_relocs tilepro_elf_check_relocs
3895 #define elf_backend_adjust_dynamic_symbol tilepro_elf_adjust_dynamic_symbol
3896 #define elf_backend_omit_section_dynsym tilepro_elf_omit_section_dynsym
3897 #define elf_backend_size_dynamic_sections tilepro_elf_size_dynamic_sections
3898 #define elf_backend_relocate_section tilepro_elf_relocate_section
3899 #define elf_backend_finish_dynamic_symbol tilepro_elf_finish_dynamic_symbol
3900 #define elf_backend_finish_dynamic_sections tilepro_elf_finish_dynamic_sections
3901 #define elf_backend_gc_mark_hook tilepro_elf_gc_mark_hook
3902 #define elf_backend_plt_sym_val tilepro_elf_plt_sym_val
3903 #define elf_info_to_howto_rel NULL
3904 #define elf_info_to_howto tilepro_info_to_howto_rela
3905 #define elf_backend_grok_prstatus tilepro_elf_grok_prstatus
3906 #define elf_backend_grok_psinfo tilepro_elf_grok_psinfo
3907 #define elf_backend_additional_program_headers tilepro_additional_program_headers
3908
3909 #define bfd_elf32_mkobject tilepro_elf_mkobject
3910
3911 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
3912
3913 #define elf_backend_can_gc_sections 1
3914 #define elf_backend_can_refcount 1
3915 #define elf_backend_want_got_plt 1
3916 #define elf_backend_plt_readonly 1
3917 /* Align PLT mod 64 byte L2 line size. */
3918 #define elf_backend_plt_alignment 6
3919 #define elf_backend_want_plt_sym 1
3920 #define elf_backend_got_header_size GOT_ENTRY_SIZE
3921 #define elf_backend_want_dynrelro 1
3922 #define elf_backend_rela_normal 1
3923 #define elf_backend_default_execstack 0
3924
3925 #include "elf32-target.h"
GDB Binutils - Deliverables
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