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* objdump.c (slurp_file): Close file if fstat fails.
[binutils.git] / bfd / elf32-tic6x.c
blob19287fec182f393c4ee2630262d16914cb17d242
1 /* 32-bit ELF support for TI C6X
2 Copyright 2010, 2011
3 Free Software Foundation, Inc.
4 Contributed by Joseph Myers <joseph@codesourcery.com>
5 Bernd Schmidt <bernds@codesourcery.com>
6
7 This file is part of BFD, the Binary File Descriptor library.
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22 MA 02110-1301, USA. */
23
24 #include "sysdep.h"
25 #include <limits.h>
26 #include "bfd.h"
27 #include "libbfd.h"
28 #include "libiberty.h"
29 #include "elf-bfd.h"
30 #include "elf/tic6x.h"
31 #include "elf32-tic6x.h"
32
33 #define ELF_DYNAMIC_INTERPRETER "/lib/ld-uClibc.so.0"
34
35 /* DSBT binaries have a default 128K stack. */
36 #define DEFAULT_STACK_SIZE 0x20000
37
38 /* The size in bytes of an entry in the procedure linkage table. */
39 #define PLT_ENTRY_SIZE 24
40
41 /* TI C6X ELF linker hash table. */
42
43 struct elf32_tic6x_link_hash_table
44 {
45 struct elf_link_hash_table elf;
46
47 /* Short-cuts to get to dynamic linker sections. */
48 asection *sdynbss;
49 asection *srelbss;
50
51 /* C6X specific command line arguments. */
52 struct elf32_tic6x_params params;
53
54 /* Small local sym cache. */
55 struct sym_cache sym_cache;
56
57 /* The output BFD, for convenience. */
58 bfd *obfd;
59
60 /* The .dsbt section. */
61 asection *dsbt;
62 };
63
64 /* Get the TI C6X ELF linker hash table from a link_info structure. */
65
66 #define elf32_tic6x_hash_table(p) \
67 ((struct elf32_tic6x_link_hash_table *) ((p)->hash))
68
69 /* TI C6X ELF linker hash entry. */
70
71 struct elf32_tic6x_link_hash_entry
72 {
73 struct elf_link_hash_entry elf;
74
75 /* Track dynamic relocs copied for this symbol. */
76 struct elf_dyn_relocs *dyn_relocs;
77 };
78
79 typedef enum
80 {
81 DELETE_EXIDX_ENTRY,
82 INSERT_EXIDX_CANTUNWIND_AT_END
83 }
84 tic6x_unwind_edit_type;
85
86 /* A (sorted) list of edits to apply to an unwind table. */
87 typedef struct tic6x_unwind_table_edit
88 {
89 tic6x_unwind_edit_type type;
90 /* Note: we sometimes want to insert an unwind entry corresponding to a
91 section different from the one we're currently writing out, so record the
92 (text) section this edit relates to here. */
93 asection *linked_section;
94 unsigned int index;
95 struct tic6x_unwind_table_edit *next;
96 }
97 tic6x_unwind_table_edit;
98
99 typedef struct _tic6x_elf_section_data
100 {
101 /* Information about mapping symbols. */
102 struct bfd_elf_section_data elf;
103 /* Information about unwind tables. */
104 union
105 {
106 /* Unwind info attached to a text section. */
107 struct
108 {
109 asection *tic6x_exidx_sec;
110 } text;
111
112 /* Unwind info attached to an .c6xabi.exidx section. */
113 struct
114 {
115 tic6x_unwind_table_edit *unwind_edit_list;
116 tic6x_unwind_table_edit *unwind_edit_tail;
117 } exidx;
118 } u;
119 }
120 _tic6x_elf_section_data;
121
122 #define elf32_tic6x_section_data(sec) \
123 ((_tic6x_elf_section_data *) elf_section_data (sec))
124
125 struct elf32_tic6x_obj_tdata
126 {
127 struct elf_obj_tdata root;
128
129 /* Whether to use RELA relocations when generating relocations.
130 This is a per-object flag to allow the assembler to generate REL
131 relocations for use in linker testcases. */
132 bfd_boolean use_rela_p;
133 };
134
135 #define elf32_tic6x_tdata(abfd) \
136 ((struct elf32_tic6x_obj_tdata *) (abfd)->tdata.any)
137
138 #define is_tic6x_elf(bfd) \
139 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
140 && elf_tdata (bfd) != NULL \
141 && elf_object_id (bfd) == TIC6X_ELF_DATA)
142
143 /* C6X ELF uses two common sections. One is the usual one, and the
144 other is for small objects. All the small objects are kept
145 together, and then referenced via the gp pointer, which yields
146 faster assembler code. This is what we use for the small common
147 section. This approach is copied from ecoff.c. */
148 static asection tic6x_elf_scom_section;
149 static asymbol tic6x_elf_scom_symbol;
150 static asymbol *tic6x_elf_scom_symbol_ptr;
151
152 static reloc_howto_type elf32_tic6x_howto_table[] =
153 {
154 HOWTO (R_C6000_NONE, /* type */
155 0, /* rightshift */
156 0, /* size (0 = byte, 1 = short, 2 = long) */
157 0, /* bitsize */
158 FALSE, /* pc_relative */
159 0, /* bitpos */
160 complain_overflow_dont,/* complain_on_overflow */
161 bfd_elf_generic_reloc, /* special_function */
162 "R_C6000_NONE", /* name */
163 FALSE, /* partial_inplace */
164 0, /* src_mask */
165 0, /* dst_mask */
166 FALSE), /* pcrel_offset */
167 HOWTO (R_C6000_ABS32, /* type */
168 0, /* rightshift */
169 2, /* size (0 = byte, 1 = short, 2 = long) */
170 32, /* bitsize */
171 FALSE, /* pc_relative */
172 0, /* bitpos */
173 complain_overflow_dont,/* complain_on_overflow */
174 bfd_elf_generic_reloc, /* special_function */
175 "R_C6000_ABS32", /* name */
176 FALSE, /* partial_inplace */
177 0, /* src_mask */
178 0xffffffff, /* dst_mask */
179 FALSE), /* pcrel_offset */
180 HOWTO (R_C6000_ABS16, /* type */
181 0, /* rightshift */
182 1, /* size (0 = byte, 1 = short, 2 = long) */
183 16, /* bitsize */
184 FALSE, /* pc_relative */
185 0, /* bitpos */
186 complain_overflow_bitfield,/* complain_on_overflow */
187 bfd_elf_generic_reloc, /* special_function */
188 "R_C6000_ABS16", /* name */
189 FALSE, /* partial_inplace */
190 0, /* src_mask */
191 0x0000ffff, /* dst_mask */
192 FALSE), /* pcrel_offset */
193 HOWTO (R_C6000_ABS8, /* type */
194 0, /* rightshift */
195 0, /* size (0 = byte, 1 = short, 2 = long) */
196 8, /* bitsize */
197 FALSE, /* pc_relative */
198 0, /* bitpos */
199 complain_overflow_bitfield,/* complain_on_overflow */
200 bfd_elf_generic_reloc, /* special_function */
201 "R_C6000_ABS8", /* name */
202 FALSE, /* partial_inplace */
203 0, /* src_mask */
204 0x000000ff, /* dst_mask */
205 FALSE), /* pcrel_offset */
206 HOWTO (R_C6000_PCR_S21, /* type */
207 2, /* rightshift */
208 2, /* size (0 = byte, 1 = short, 2 = long) */
209 21, /* bitsize */
210 TRUE, /* pc_relative */
211 7, /* bitpos */
212 complain_overflow_signed,/* complain_on_overflow */
213 bfd_elf_generic_reloc, /* special_function */
214 "R_C6000_PCR_S21", /* name */
215 FALSE, /* partial_inplace */
216 0, /* src_mask */
217 0x0fffff80, /* dst_mask */
218 TRUE), /* pcrel_offset */
219 HOWTO (R_C6000_PCR_S12, /* type */
220 2, /* rightshift */
221 2, /* size (0 = byte, 1 = short, 2 = long) */
222 12, /* bitsize */
223 TRUE, /* pc_relative */
224 16, /* bitpos */
225 complain_overflow_signed,/* complain_on_overflow */
226 bfd_elf_generic_reloc, /* special_function */
227 "R_C6000_PCR_S12", /* name */
228 FALSE, /* partial_inplace */
229 0, /* src_mask */
230 0x0fff0000, /* dst_mask */
231 TRUE), /* pcrel_offset */
232 HOWTO (R_C6000_PCR_S10, /* type */
233 2, /* rightshift */
234 2, /* size (0 = byte, 1 = short, 2 = long) */
235 10, /* bitsize */
236 TRUE, /* pc_relative */
237 13, /* bitpos */
238 complain_overflow_signed,/* complain_on_overflow */
239 bfd_elf_generic_reloc, /* special_function */
240 "R_C6000_PCR_S10", /* name */
241 FALSE, /* partial_inplace */
242 0, /* src_mask */
243 0x007fe000, /* dst_mask */
244 TRUE), /* pcrel_offset */
245 HOWTO (R_C6000_PCR_S7, /* type */
246 2, /* rightshift */
247 2, /* size (0 = byte, 1 = short, 2 = long) */
248 7, /* bitsize */
249 TRUE, /* pc_relative */
250 16, /* bitpos */
251 complain_overflow_signed,/* complain_on_overflow */
252 bfd_elf_generic_reloc, /* special_function */
253 "R_C6000_PCR_S7", /* name */
254 FALSE, /* partial_inplace */
255 0, /* src_mask */
256 0x007f0000, /* dst_mask */
257 TRUE), /* pcrel_offset */
258 HOWTO (R_C6000_ABS_S16, /* type */
259 0, /* rightshift */
260 2, /* size (0 = byte, 1 = short, 2 = long) */
261 16, /* bitsize */
262 FALSE, /* pc_relative */
263 7, /* bitpos */
264 complain_overflow_signed,/* complain_on_overflow */
265 bfd_elf_generic_reloc, /* special_function */
266 "R_C6000_ABS_S16", /* name */
267 FALSE, /* partial_inplace */
268 0, /* src_mask */
269 0x007fff80, /* dst_mask */
270 FALSE), /* pcrel_offset */
271 HOWTO (R_C6000_ABS_L16, /* type */
272 0, /* rightshift */
273 2, /* size (0 = byte, 1 = short, 2 = long) */
274 16, /* bitsize */
275 FALSE, /* pc_relative */
276 7, /* bitpos */
277 complain_overflow_dont,/* complain_on_overflow */
278 bfd_elf_generic_reloc, /* special_function */
279 "R_C6000_ABS_L16", /* name */
280 FALSE, /* partial_inplace */
281 0, /* src_mask */
282 0x007fff80, /* dst_mask */
283 FALSE), /* pcrel_offset */
284 HOWTO (R_C6000_ABS_H16, /* type */
285 16, /* rightshift */
286 2, /* size (0 = byte, 1 = short, 2 = long) */
287 16, /* bitsize */
288 FALSE, /* pc_relative */
289 7, /* bitpos */
290 complain_overflow_dont,/* complain_on_overflow */
291 bfd_elf_generic_reloc, /* special_function */
292 "R_C6000_ABS_H16", /* name */
293 FALSE, /* partial_inplace */
294 0, /* src_mask */
295 0x007fff80, /* dst_mask */
296 FALSE), /* pcrel_offset */
297 HOWTO (R_C6000_SBR_U15_B, /* type */
298 0, /* rightshift */
299 2, /* size (0 = byte, 1 = short, 2 = long) */
300 15, /* bitsize */
301 FALSE, /* pc_relative */
302 8, /* bitpos */
303 complain_overflow_unsigned,/* complain_on_overflow */
304 bfd_elf_generic_reloc, /* special_function */
305 "R_C6000_SBR_U15_B", /* name */
306 FALSE, /* partial_inplace */
307 0, /* src_mask */
308 0x007fff00, /* dst_mask */
309 FALSE), /* pcrel_offset */
310 HOWTO (R_C6000_SBR_U15_H, /* type */
311 1, /* rightshift */
312 2, /* size (0 = byte, 1 = short, 2 = long) */
313 15, /* bitsize */
314 FALSE, /* pc_relative */
315 8, /* bitpos */
316 complain_overflow_unsigned,/* complain_on_overflow */
317 bfd_elf_generic_reloc, /* special_function */
318 "R_C6000_SBR_U15_H", /* name */
319 FALSE, /* partial_inplace */
320 0, /* src_mask */
321 0x007fff00, /* dst_mask */
322 FALSE), /* pcrel_offset */
323 HOWTO (R_C6000_SBR_U15_W, /* type */
324 2, /* rightshift */
325 2, /* size (0 = byte, 1 = short, 2 = long) */
326 15, /* bitsize */
327 FALSE, /* pc_relative */
328 8, /* bitpos */
329 complain_overflow_unsigned,/* complain_on_overflow */
330 bfd_elf_generic_reloc, /* special_function */
331 "R_C6000_SBR_U15_W", /* name */
332 FALSE, /* partial_inplace */
333 0, /* src_mask */
334 0x007fff00, /* dst_mask */
335 FALSE), /* pcrel_offset */
336 HOWTO (R_C6000_SBR_S16, /* type */
337 0, /* rightshift */
338 2, /* size (0 = byte, 1 = short, 2 = long) */
339 16, /* bitsize */
340 FALSE, /* pc_relative */
341 7, /* bitpos */
342 complain_overflow_signed,/* complain_on_overflow */
343 bfd_elf_generic_reloc, /* special_function */
344 "R_C6000_SBR_S16", /* name */
345 FALSE, /* partial_inplace */
346 0, /* src_mask */
347 0x007fff80, /* dst_mask */
348 FALSE), /* pcrel_offset */
349 HOWTO (R_C6000_SBR_L16_B, /* type */
350 0, /* rightshift */
351 2, /* size (0 = byte, 1 = short, 2 = long) */
352 16, /* bitsize */
353 FALSE, /* pc_relative */
354 7, /* bitpos */
355 complain_overflow_dont,/* complain_on_overflow */
356 bfd_elf_generic_reloc, /* special_function */
357 "R_C6000_SBR_L16_B", /* name */
358 FALSE, /* partial_inplace */
359 0, /* src_mask */
360 0x007fff80, /* dst_mask */
361 FALSE), /* pcrel_offset */
362 HOWTO (R_C6000_SBR_L16_H, /* type */
363 1, /* rightshift */
364 2, /* size (0 = byte, 1 = short, 2 = long) */
365 16, /* bitsize */
366 FALSE, /* pc_relative */
367 7, /* bitpos */
368 complain_overflow_dont,/* complain_on_overflow */
369 bfd_elf_generic_reloc, /* special_function */
370 "R_C6000_SBR_L16_H", /* name */
371 FALSE, /* partial_inplace */
372 0, /* src_mask */
373 0x007fff80, /* dst_mask */
374 FALSE), /* pcrel_offset */
375 HOWTO (R_C6000_SBR_L16_W, /* type */
376 2, /* rightshift */
377 2, /* size (0 = byte, 1 = short, 2 = long) */
378 16, /* bitsize */
379 FALSE, /* pc_relative */
380 7, /* bitpos */
381 complain_overflow_dont,/* complain_on_overflow */
382 bfd_elf_generic_reloc, /* special_function */
383 "R_C6000_SBR_L16_W", /* name */
384 FALSE, /* partial_inplace */
385 0, /* src_mask */
386 0x007fff80, /* dst_mask */
387 FALSE), /* pcrel_offset */
388 HOWTO (R_C6000_SBR_H16_B, /* type */
389 16, /* rightshift */
390 2, /* size (0 = byte, 1 = short, 2 = long) */
391 16, /* bitsize */
392 FALSE, /* pc_relative */
393 7, /* bitpos */
394 complain_overflow_dont,/* complain_on_overflow */
395 bfd_elf_generic_reloc, /* special_function */
396 "R_C6000_SBR_H16_B", /* name */
397 FALSE, /* partial_inplace */
398 0, /* src_mask */
399 0x007fff80, /* dst_mask */
400 FALSE), /* pcrel_offset */
401 HOWTO (R_C6000_SBR_H16_H, /* type */
402 17, /* rightshift */
403 2, /* size (0 = byte, 1 = short, 2 = long) */
404 16, /* bitsize */
405 FALSE, /* pc_relative */
406 7, /* bitpos */
407 complain_overflow_dont,/* complain_on_overflow */
408 bfd_elf_generic_reloc, /* special_function */
409 "R_C6000_SBR_H16_H", /* name */
410 FALSE, /* partial_inplace */
411 0, /* src_mask */
412 0x007fff80, /* dst_mask */
413 FALSE), /* pcrel_offset */
414 HOWTO (R_C6000_SBR_H16_W, /* type */
415 18, /* rightshift */
416 2, /* size (0 = byte, 1 = short, 2 = long) */
417 16, /* bitsize */
418 FALSE, /* pc_relative */
419 7, /* bitpos */
420 complain_overflow_dont,/* complain_on_overflow */
421 bfd_elf_generic_reloc, /* special_function */
422 "R_C6000_SBR_H16_W", /* name */
423 FALSE, /* partial_inplace */
424 0, /* src_mask */
425 0x007fff80, /* dst_mask */
426 FALSE), /* pcrel_offset */
427 HOWTO (R_C6000_SBR_GOT_U15_W, /* type */
428 2, /* rightshift */
429 2, /* size (0 = byte, 1 = short, 2 = long) */
430 15, /* bitsize */
431 FALSE, /* pc_relative */
432 8, /* bitpos */
433 complain_overflow_unsigned,/* complain_on_overflow */
434 bfd_elf_generic_reloc, /* special_function */
435 "R_C6000_SBR_GOT_U15_W",/* name */
436 FALSE, /* partial_inplace */
437 0, /* src_mask */
438 0x007fff00, /* dst_mask */
439 FALSE), /* pcrel_offset */
440 HOWTO (R_C6000_SBR_GOT_L16_W, /* type */
441 2, /* rightshift */
442 2, /* size (0 = byte, 1 = short, 2 = long) */
443 16, /* bitsize */
444 FALSE, /* pc_relative */
445 7, /* bitpos */
446 complain_overflow_dont,/* complain_on_overflow */
447 bfd_elf_generic_reloc, /* special_function */
448 "R_C6000_SBR_GOT_L16_W",/* name */
449 FALSE, /* partial_inplace */
450 0, /* src_mask */
451 0x007fff80, /* dst_mask */
452 FALSE), /* pcrel_offset */
453 HOWTO (R_C6000_SBR_GOT_H16_W, /* type */
454 18, /* rightshift */
455 2, /* size (0 = byte, 1 = short, 2 = long) */
456 16, /* bitsize */
457 FALSE, /* pc_relative */
458 7, /* bitpos */
459 complain_overflow_dont,/* complain_on_overflow */
460 bfd_elf_generic_reloc, /* special_function */
461 "R_C6000_SBR_GOT_H16_W",/* name */
462 FALSE, /* partial_inplace */
463 0, /* src_mask */
464 0x007fff80, /* dst_mask */
465 FALSE), /* pcrel_offset */
466 HOWTO (R_C6000_DSBT_INDEX, /* type */
467 0, /* rightshift */
468 2, /* size (0 = byte, 1 = short, 2 = long) */
469 15, /* bitsize */
470 FALSE, /* pc_relative */
471 8, /* bitpos */
472 complain_overflow_unsigned,/* complain_on_overflow */
473 bfd_elf_generic_reloc, /* special_function */
474 "R_C6000_DSBT_INDEX", /* name */
475 FALSE, /* partial_inplace */
476 0, /* src_mask */
477 0x007fff00, /* dst_mask */
478 FALSE), /* pcrel_offset */
479 HOWTO (R_C6000_PREL31, /* type */
480 1, /* rightshift */
481 2, /* size (0 = byte, 1 = short, 2 = long) */
482 31, /* bitsize */
483 TRUE, /* pc_relative */
484 0, /* bitpos */
485 complain_overflow_dont,/* complain_on_overflow */
486 bfd_elf_generic_reloc, /* special_function */
487 "R_C6000_PREL31", /* name */
488 FALSE, /* partial_inplace */
489 0, /* src_mask */
490 0x7fffffff, /* dst_mask */
491 TRUE), /* pcrel_offset */
492 HOWTO (R_C6000_COPY, /* type */
493 0, /* rightshift */
494 2, /* size (0 = byte, 1 = short, 2 = long) */
495 32, /* bitsize */
496 FALSE, /* pc_relative */
497 0, /* bitpos */
498 complain_overflow_dont,/* complain_on_overflow */
499 bfd_elf_generic_reloc, /* special_function */
500 "R_C6000_COPY", /* name */
501 FALSE, /* partial_inplace */
502 0, /* src_mask */
503 0xffffffff, /* dst_mask */
504 FALSE), /* pcrel_offset */
505 HOWTO (R_C6000_JUMP_SLOT, /* type */
506 0, /* rightshift */
507 2, /* size (0 = byte, 1 = short, 2 = long) */
508 32, /* bitsize */
509 FALSE, /* pc_relative */
510 0, /* bitpos */
511 complain_overflow_dont,/* complain_on_overflow */
512 bfd_elf_generic_reloc, /* special_function */
513 "R_C6000_JUMP_SLOT", /* name */
514 FALSE, /* partial_inplace */
515 0, /* src_mask */
516 0xffffffff, /* dst_mask */
517 FALSE), /* pcrel_offset */
518 HOWTO (R_C6000_EHTYPE, /* type */
519 0, /* rightshift */
520 2, /* size (0 = byte, 1 = short, 2 = long) */
521 32, /* bitsize */
522 FALSE, /* pc_relative */
523 0, /* bitpos */
524 complain_overflow_dont,/* complain_on_overflow */
525 bfd_elf_generic_reloc, /* special_function */
526 "R_C6000_EHTYPE", /* name */
527 FALSE, /* partial_inplace */
528 0, /* src_mask */
529 0xffffffff, /* dst_mask */
530 FALSE), /* pcrel_offset */
531 HOWTO (R_C6000_PCR_H16, /* type */
532 16, /* rightshift */
533 2, /* size (0 = byte, 1 = short, 2 = long) */
534 16, /* bitsize */
535 TRUE, /* pc_relative */
536 7, /* bitpos */
537 complain_overflow_dont,/* complain_on_overflow */
538 bfd_elf_generic_reloc, /* special_function */
539 "R_C6000_PCR_H16", /* name */
540 FALSE, /* partial_inplace */
541 0, /* src_mask */
542 0x007fff80, /* dst_mask */
543 TRUE), /* pcrel_offset */
544 HOWTO (R_C6000_PCR_L16, /* type */
545 0, /* rightshift */
546 2, /* size (0 = byte, 1 = short, 2 = long) */
547 16, /* bitsize */
548 TRUE, /* pc_relative */
549 7, /* bitpos */
550 complain_overflow_dont,/* complain_on_overflow */
551 bfd_elf_generic_reloc, /* special_function */
552 "R_C6000_PCR_L16", /* name */
553 FALSE, /* partial_inplace */
554 0, /* src_mask */
555 0x007fff80, /* dst_mask */
556 TRUE), /* pcrel_offset */
557 EMPTY_HOWTO (31),
558 EMPTY_HOWTO (32),
559 EMPTY_HOWTO (33),
560 EMPTY_HOWTO (34),
561 EMPTY_HOWTO (35),
562 EMPTY_HOWTO (36),
563 EMPTY_HOWTO (37),
564 EMPTY_HOWTO (38),
565 EMPTY_HOWTO (39),
566 EMPTY_HOWTO (40),
567 EMPTY_HOWTO (41),
568 EMPTY_HOWTO (42),
569 EMPTY_HOWTO (43),
570 EMPTY_HOWTO (44),
571 EMPTY_HOWTO (45),
572 EMPTY_HOWTO (46),
573 EMPTY_HOWTO (47),
574 EMPTY_HOWTO (48),
575 EMPTY_HOWTO (49),
576 EMPTY_HOWTO (50),
577 EMPTY_HOWTO (51),
578 EMPTY_HOWTO (52),
579 EMPTY_HOWTO (53),
580 EMPTY_HOWTO (54),
581 EMPTY_HOWTO (55),
582 EMPTY_HOWTO (56),
583 EMPTY_HOWTO (57),
584 EMPTY_HOWTO (58),
585 EMPTY_HOWTO (59),
586 EMPTY_HOWTO (60),
587 EMPTY_HOWTO (61),
588 EMPTY_HOWTO (62),
589 EMPTY_HOWTO (63),
590 EMPTY_HOWTO (64),
591 EMPTY_HOWTO (65),
592 EMPTY_HOWTO (66),
593 EMPTY_HOWTO (67),
594 EMPTY_HOWTO (68),
595 EMPTY_HOWTO (69),
596 EMPTY_HOWTO (70),
597 EMPTY_HOWTO (71),
598 EMPTY_HOWTO (72),
599 EMPTY_HOWTO (73),
600 EMPTY_HOWTO (74),
601 EMPTY_HOWTO (75),
602 EMPTY_HOWTO (76),
603 EMPTY_HOWTO (77),
604 EMPTY_HOWTO (78),
605 EMPTY_HOWTO (79),
606 EMPTY_HOWTO (80),
607 EMPTY_HOWTO (81),
608 EMPTY_HOWTO (82),
609 EMPTY_HOWTO (83),
610 EMPTY_HOWTO (84),
611 EMPTY_HOWTO (85),
612 EMPTY_HOWTO (86),
613 EMPTY_HOWTO (87),
614 EMPTY_HOWTO (88),
615 EMPTY_HOWTO (89),
616 EMPTY_HOWTO (90),
617 EMPTY_HOWTO (91),
618 EMPTY_HOWTO (92),
619 EMPTY_HOWTO (93),
620 EMPTY_HOWTO (94),
621 EMPTY_HOWTO (95),
622 EMPTY_HOWTO (96),
623 EMPTY_HOWTO (97),
624 EMPTY_HOWTO (98),
625 EMPTY_HOWTO (99),
626 EMPTY_HOWTO (100),
627 EMPTY_HOWTO (101),
628 EMPTY_HOWTO (102),
629 EMPTY_HOWTO (103),
630 EMPTY_HOWTO (104),
631 EMPTY_HOWTO (105),
632 EMPTY_HOWTO (106),
633 EMPTY_HOWTO (107),
634 EMPTY_HOWTO (108),
635 EMPTY_HOWTO (109),
636 EMPTY_HOWTO (110),
637 EMPTY_HOWTO (111),
638 EMPTY_HOWTO (112),
639 EMPTY_HOWTO (113),
640 EMPTY_HOWTO (114),
641 EMPTY_HOWTO (115),
642 EMPTY_HOWTO (116),
643 EMPTY_HOWTO (117),
644 EMPTY_HOWTO (118),
645 EMPTY_HOWTO (119),
646 EMPTY_HOWTO (120),
647 EMPTY_HOWTO (121),
648 EMPTY_HOWTO (122),
649 EMPTY_HOWTO (123),
650 EMPTY_HOWTO (124),
651 EMPTY_HOWTO (125),
652 EMPTY_HOWTO (126),
653 EMPTY_HOWTO (127),
654 EMPTY_HOWTO (128),
655 EMPTY_HOWTO (129),
656 EMPTY_HOWTO (130),
657 EMPTY_HOWTO (131),
658 EMPTY_HOWTO (132),
659 EMPTY_HOWTO (133),
660 EMPTY_HOWTO (134),
661 EMPTY_HOWTO (135),
662 EMPTY_HOWTO (136),
663 EMPTY_HOWTO (137),
664 EMPTY_HOWTO (138),
665 EMPTY_HOWTO (139),
666 EMPTY_HOWTO (140),
667 EMPTY_HOWTO (141),
668 EMPTY_HOWTO (142),
669 EMPTY_HOWTO (143),
670 EMPTY_HOWTO (144),
671 EMPTY_HOWTO (145),
672 EMPTY_HOWTO (146),
673 EMPTY_HOWTO (147),
674 EMPTY_HOWTO (148),
675 EMPTY_HOWTO (149),
676 EMPTY_HOWTO (150),
677 EMPTY_HOWTO (151),
678 EMPTY_HOWTO (152),
679 EMPTY_HOWTO (153),
680 EMPTY_HOWTO (154),
681 EMPTY_HOWTO (155),
682 EMPTY_HOWTO (156),
683 EMPTY_HOWTO (157),
684 EMPTY_HOWTO (158),
685 EMPTY_HOWTO (159),
686 EMPTY_HOWTO (160),
687 EMPTY_HOWTO (161),
688 EMPTY_HOWTO (162),
689 EMPTY_HOWTO (163),
690 EMPTY_HOWTO (164),
691 EMPTY_HOWTO (165),
692 EMPTY_HOWTO (166),
693 EMPTY_HOWTO (167),
694 EMPTY_HOWTO (168),
695 EMPTY_HOWTO (169),
696 EMPTY_HOWTO (170),
697 EMPTY_HOWTO (171),
698 EMPTY_HOWTO (172),
699 EMPTY_HOWTO (173),
700 EMPTY_HOWTO (174),
701 EMPTY_HOWTO (175),
702 EMPTY_HOWTO (176),
703 EMPTY_HOWTO (177),
704 EMPTY_HOWTO (178),
705 EMPTY_HOWTO (179),
706 EMPTY_HOWTO (180),
707 EMPTY_HOWTO (181),
708 EMPTY_HOWTO (182),
709 EMPTY_HOWTO (183),
710 EMPTY_HOWTO (184),
711 EMPTY_HOWTO (185),
712 EMPTY_HOWTO (186),
713 EMPTY_HOWTO (187),
714 EMPTY_HOWTO (188),
715 EMPTY_HOWTO (189),
716 EMPTY_HOWTO (190),
717 EMPTY_HOWTO (191),
718 EMPTY_HOWTO (192),
719 EMPTY_HOWTO (193),
720 EMPTY_HOWTO (194),
721 EMPTY_HOWTO (195),
722 EMPTY_HOWTO (196),
723 EMPTY_HOWTO (197),
724 EMPTY_HOWTO (198),
725 EMPTY_HOWTO (199),
726 EMPTY_HOWTO (200),
727 EMPTY_HOWTO (201),
728 EMPTY_HOWTO (202),
729 EMPTY_HOWTO (203),
730 EMPTY_HOWTO (204),
731 EMPTY_HOWTO (205),
732 EMPTY_HOWTO (206),
733 EMPTY_HOWTO (207),
734 EMPTY_HOWTO (208),
735 EMPTY_HOWTO (209),
736 EMPTY_HOWTO (210),
737 EMPTY_HOWTO (211),
738 EMPTY_HOWTO (212),
739 EMPTY_HOWTO (213),
740 EMPTY_HOWTO (214),
741 EMPTY_HOWTO (215),
742 EMPTY_HOWTO (216),
743 EMPTY_HOWTO (217),
744 EMPTY_HOWTO (218),
745 EMPTY_HOWTO (219),
746 EMPTY_HOWTO (220),
747 EMPTY_HOWTO (221),
748 EMPTY_HOWTO (222),
749 EMPTY_HOWTO (223),
750 EMPTY_HOWTO (224),
751 EMPTY_HOWTO (225),
752 EMPTY_HOWTO (226),
753 EMPTY_HOWTO (227),
754 EMPTY_HOWTO (228),
755 EMPTY_HOWTO (229),
756 EMPTY_HOWTO (230),
757 EMPTY_HOWTO (231),
758 EMPTY_HOWTO (232),
759 EMPTY_HOWTO (233),
760 EMPTY_HOWTO (234),
761 EMPTY_HOWTO (235),
762 EMPTY_HOWTO (236),
763 EMPTY_HOWTO (237),
764 EMPTY_HOWTO (238),
765 EMPTY_HOWTO (239),
766 EMPTY_HOWTO (240),
767 EMPTY_HOWTO (241),
768 EMPTY_HOWTO (242),
769 EMPTY_HOWTO (243),
770 EMPTY_HOWTO (244),
771 EMPTY_HOWTO (245),
772 EMPTY_HOWTO (246),
773 EMPTY_HOWTO (247),
774 EMPTY_HOWTO (248),
775 EMPTY_HOWTO (249),
776 EMPTY_HOWTO (250),
777 EMPTY_HOWTO (251),
778 EMPTY_HOWTO (252),
779 HOWTO (R_C6000_ALIGN, /* type */
780 0, /* rightshift */
781 0, /* size (0 = byte, 1 = short, 2 = long) */
782 0, /* bitsize */
783 FALSE, /* pc_relative */
784 0, /* bitpos */
785 complain_overflow_dont,/* complain_on_overflow */
786 bfd_elf_generic_reloc, /* special_function */
787 "R_C6000_ALIGN", /* name */
788 FALSE, /* partial_inplace */
789 0, /* src_mask */
790 0, /* dst_mask */
791 FALSE), /* pcrel_offset */
792 HOWTO (R_C6000_FPHEAD, /* type */
793 0, /* rightshift */
794 0, /* size (0 = byte, 1 = short, 2 = long) */
795 0, /* bitsize */
796 FALSE, /* pc_relative */
797 0, /* bitpos */
798 complain_overflow_dont,/* complain_on_overflow */
799 bfd_elf_generic_reloc, /* special_function */
800 "R_C6000_FPHEAD", /* name */
801 FALSE, /* partial_inplace */
802 0, /* src_mask */
803 0, /* dst_mask */
804 FALSE), /* pcrel_offset */
805 HOWTO (R_C6000_NOCMP, /* type */
806 0, /* rightshift */
807 0, /* size (0 = byte, 1 = short, 2 = long) */
808 0, /* bitsize */
809 FALSE, /* pc_relative */
810 0, /* bitpos */
811 complain_overflow_dont,/* complain_on_overflow */
812 bfd_elf_generic_reloc, /* special_function */
813 "R_C6000_NOCMP", /* name */
814 FALSE, /* partial_inplace */
815 0, /* src_mask */
816 0, /* dst_mask */
817 FALSE) /* pcrel_offset */
818 };
819
820 static reloc_howto_type elf32_tic6x_howto_table_rel[] =
821 {
822 HOWTO (R_C6000_NONE, /* type */
823 0, /* rightshift */
824 0, /* size (0 = byte, 1 = short, 2 = long) */
825 0, /* bitsize */
826 FALSE, /* pc_relative */
827 0, /* bitpos */
828 complain_overflow_dont,/* complain_on_overflow */
829 bfd_elf_generic_reloc, /* special_function */
830 "R_C6000_NONE", /* name */
831 TRUE, /* partial_inplace */
832 0, /* src_mask */
833 0, /* dst_mask */
834 FALSE), /* pcrel_offset */
835 HOWTO (R_C6000_ABS32, /* type */
836 0, /* rightshift */
837 2, /* size (0 = byte, 1 = short, 2 = long) */
838 32, /* bitsize */
839 FALSE, /* pc_relative */
840 0, /* bitpos */
841 complain_overflow_dont,/* complain_on_overflow */
842 bfd_elf_generic_reloc, /* special_function */
843 "R_C6000_ABS32", /* name */
844 TRUE, /* partial_inplace */
845 0xffffffff, /* src_mask */
846 0xffffffff, /* dst_mask */
847 FALSE), /* pcrel_offset */
848 HOWTO (R_C6000_ABS16, /* type */
849 0, /* rightshift */
850 1, /* size (0 = byte, 1 = short, 2 = long) */
851 16, /* bitsize */
852 FALSE, /* pc_relative */
853 0, /* bitpos */
854 complain_overflow_bitfield,/* complain_on_overflow */
855 bfd_elf_generic_reloc, /* special_function */
856 "R_C6000_ABS16", /* name */
857 TRUE, /* partial_inplace */
858 0x0000ffff, /* src_mask */
859 0x0000ffff, /* dst_mask */
860 FALSE), /* pcrel_offset */
861 HOWTO (R_C6000_ABS8, /* type */
862 0, /* rightshift */
863 0, /* size (0 = byte, 1 = short, 2 = long) */
864 8, /* bitsize */
865 FALSE, /* pc_relative */
866 0, /* bitpos */
867 complain_overflow_bitfield,/* complain_on_overflow */
868 bfd_elf_generic_reloc, /* special_function */
869 "R_C6000_ABS8", /* name */
870 TRUE, /* partial_inplace */
871 0x000000ff, /* src_mask */
872 0x000000ff, /* dst_mask */
873 FALSE), /* pcrel_offset */
874 HOWTO (R_C6000_PCR_S21, /* type */
875 2, /* rightshift */
876 2, /* size (0 = byte, 1 = short, 2 = long) */
877 21, /* bitsize */
878 TRUE, /* pc_relative */
879 7, /* bitpos */
880 complain_overflow_signed,/* complain_on_overflow */
881 bfd_elf_generic_reloc, /* special_function */
882 "R_C6000_PCR_S21", /* name */
883 TRUE, /* partial_inplace */
884 0x0fffff80, /* src_mask */
885 0x0fffff80, /* dst_mask */
886 TRUE), /* pcrel_offset */
887 HOWTO (R_C6000_PCR_S12, /* type */
888 2, /* rightshift */
889 2, /* size (0 = byte, 1 = short, 2 = long) */
890 12, /* bitsize */
891 TRUE, /* pc_relative */
892 16, /* bitpos */
893 complain_overflow_signed,/* complain_on_overflow */
894 bfd_elf_generic_reloc, /* special_function */
895 "R_C6000_PCR_S12", /* name */
896 TRUE, /* partial_inplace */
897 0x0fff0000, /* src_mask */
898 0x0fff0000, /* dst_mask */
899 TRUE), /* pcrel_offset */
900 HOWTO (R_C6000_PCR_S10, /* type */
901 2, /* rightshift */
902 2, /* size (0 = byte, 1 = short, 2 = long) */
903 10, /* bitsize */
904 TRUE, /* pc_relative */
905 13, /* bitpos */
906 complain_overflow_signed,/* complain_on_overflow */
907 bfd_elf_generic_reloc, /* special_function */
908 "R_C6000_PCR_S10", /* name */
909 TRUE, /* partial_inplace */
910 0x007fe000, /* src_mask */
911 0x007fe000, /* dst_mask */
912 TRUE), /* pcrel_offset */
913 HOWTO (R_C6000_PCR_S7, /* type */
914 2, /* rightshift */
915 2, /* size (0 = byte, 1 = short, 2 = long) */
916 7, /* bitsize */
917 TRUE, /* pc_relative */
918 16, /* bitpos */
919 complain_overflow_signed,/* complain_on_overflow */
920 bfd_elf_generic_reloc, /* special_function */
921 "R_C6000_PCR_S7", /* name */
922 TRUE, /* partial_inplace */
923 0x007f0000, /* src_mask */
924 0x007f0000, /* dst_mask */
925 TRUE), /* pcrel_offset */
926 HOWTO (R_C6000_ABS_S16, /* type */
927 0, /* rightshift */
928 2, /* size (0 = byte, 1 = short, 2 = long) */
929 16, /* bitsize */
930 FALSE, /* pc_relative */
931 7, /* bitpos */
932 complain_overflow_signed,/* complain_on_overflow */
933 bfd_elf_generic_reloc, /* special_function */
934 "R_C6000_ABS_S16", /* name */
935 TRUE, /* partial_inplace */
936 0x007fff80, /* src_mask */
937 0x007fff80, /* dst_mask */
938 FALSE), /* pcrel_offset */
939 HOWTO (R_C6000_ABS_L16, /* type */
940 0, /* rightshift */
941 2, /* size (0 = byte, 1 = short, 2 = long) */
942 16, /* bitsize */
943 FALSE, /* pc_relative */
944 7, /* bitpos */
945 complain_overflow_dont,/* complain_on_overflow */
946 bfd_elf_generic_reloc, /* special_function */
947 "R_C6000_ABS_L16", /* name */
948 TRUE, /* partial_inplace */
949 0x007fff80, /* src_mask */
950 0x007fff80, /* dst_mask */
951 FALSE), /* pcrel_offset */
952 EMPTY_HOWTO (R_C6000_ABS_H16),
953 HOWTO (R_C6000_SBR_U15_B, /* type */
954 0, /* rightshift */
955 2, /* size (0 = byte, 1 = short, 2 = long) */
956 15, /* bitsize */
957 FALSE, /* pc_relative */
958 8, /* bitpos */
959 complain_overflow_unsigned,/* complain_on_overflow */
960 bfd_elf_generic_reloc, /* special_function */
961 "R_C6000_SBR_U15_B", /* name */
962 TRUE, /* partial_inplace */
963 0x007fff00, /* src_mask */
964 0x007fff00, /* dst_mask */
965 FALSE), /* pcrel_offset */
966 HOWTO (R_C6000_SBR_U15_H, /* type */
967 1, /* rightshift */
968 2, /* size (0 = byte, 1 = short, 2 = long) */
969 15, /* bitsize */
970 FALSE, /* pc_relative */
971 8, /* bitpos */
972 complain_overflow_unsigned,/* complain_on_overflow */
973 bfd_elf_generic_reloc, /* special_function */
974 "R_C6000_SBR_U15_H", /* name */
975 TRUE, /* partial_inplace */
976 0x007fff00, /* src_mask */
977 0x007fff00, /* dst_mask */
978 FALSE), /* pcrel_offset */
979 HOWTO (R_C6000_SBR_U15_W, /* type */
980 2, /* rightshift */
981 2, /* size (0 = byte, 1 = short, 2 = long) */
982 15, /* bitsize */
983 FALSE, /* pc_relative */
984 8, /* bitpos */
985 complain_overflow_unsigned,/* complain_on_overflow */
986 bfd_elf_generic_reloc, /* special_function */
987 "R_C6000_SBR_U15_W", /* name */
988 TRUE, /* partial_inplace */
989 0x007fff00, /* src_mask */
990 0x007fff00, /* dst_mask */
991 FALSE), /* pcrel_offset */
992 HOWTO (R_C6000_SBR_S16, /* type */
993 0, /* rightshift */
994 2, /* size (0 = byte, 1 = short, 2 = long) */
995 16, /* bitsize */
996 FALSE, /* pc_relative */
997 7, /* bitpos */
998 complain_overflow_signed,/* complain_on_overflow */
999 bfd_elf_generic_reloc, /* special_function */
1000 "R_C6000_SBR_S16", /* name */
1001 TRUE, /* partial_inplace */
1002 0x007fff80, /* src_mask */
1003 0x007fff80, /* dst_mask */
1004 FALSE), /* pcrel_offset */
1005 HOWTO (R_C6000_SBR_L16_B, /* type */
1006 0, /* rightshift */
1007 2, /* size (0 = byte, 1 = short, 2 = long) */
1008 16, /* bitsize */
1009 FALSE, /* pc_relative */
1010 7, /* bitpos */
1011 complain_overflow_dont,/* complain_on_overflow */
1012 bfd_elf_generic_reloc, /* special_function */
1013 "R_C6000_SBR_L16_B", /* name */
1014 TRUE, /* partial_inplace */
1015 0x007fff80, /* src_mask */
1016 0x007fff80, /* dst_mask */
1017 FALSE), /* pcrel_offset */
1018 HOWTO (R_C6000_SBR_L16_H, /* type */
1019 1, /* rightshift */
1020 2, /* size (0 = byte, 1 = short, 2 = long) */
1021 16, /* bitsize */
1022 FALSE, /* pc_relative */
1023 7, /* bitpos */
1024 complain_overflow_dont,/* complain_on_overflow */
1025 bfd_elf_generic_reloc, /* special_function */
1026 "R_C6000_SBR_L16_H", /* name */
1027 TRUE, /* partial_inplace */
1028 0x007fff80, /* src_mask */
1029 0x007fff80, /* dst_mask */
1030 FALSE), /* pcrel_offset */
1031 HOWTO (R_C6000_SBR_L16_W, /* type */
1032 2, /* rightshift */
1033 2, /* size (0 = byte, 1 = short, 2 = long) */
1034 16, /* bitsize */
1035 FALSE, /* pc_relative */
1036 7, /* bitpos */
1037 complain_overflow_dont,/* complain_on_overflow */
1038 bfd_elf_generic_reloc, /* special_function */
1039 "R_C6000_SBR_L16_W", /* name */
1040 TRUE, /* partial_inplace */
1041 0x007fff80, /* src_mask */
1042 0x007fff80, /* dst_mask */
1043 FALSE), /* pcrel_offset */
1044 EMPTY_HOWTO (R_C6000_SBR_H16_B),
1045 EMPTY_HOWTO (R_C6000_SBR_H16_H),
1046 EMPTY_HOWTO (R_C6000_SBR_H16_W),
1047 HOWTO (R_C6000_SBR_GOT_U15_W, /* type */
1048 2, /* rightshift */
1049 2, /* size (0 = byte, 1 = short, 2 = long) */
1050 15, /* bitsize */
1051 FALSE, /* pc_relative */
1052 8, /* bitpos */
1053 complain_overflow_unsigned,/* complain_on_overflow */
1054 bfd_elf_generic_reloc, /* special_function */
1055 "R_C6000_SBR_GOT_U15_W",/* name */
1056 TRUE, /* partial_inplace */
1057 0x007fff00, /* src_mask */
1058 0x007fff00, /* dst_mask */
1059 FALSE), /* pcrel_offset */
1060 HOWTO (R_C6000_SBR_GOT_L16_W, /* type */
1061 2, /* rightshift */
1062 2, /* size (0 = byte, 1 = short, 2 = long) */
1063 16, /* bitsize */
1064 FALSE, /* pc_relative */
1065 7, /* bitpos */
1066 complain_overflow_dont,/* complain_on_overflow */
1067 bfd_elf_generic_reloc, /* special_function */
1068 "R_C6000_SBR_GOT_L16_W",/* name */
1069 TRUE, /* partial_inplace */
1070 0x007fff80, /* src_mask */
1071 0x007fff80, /* dst_mask */
1072 FALSE), /* pcrel_offset */
1073 EMPTY_HOWTO (R_C6000_SBR_GOT_H16_W),
1074 HOWTO (R_C6000_DSBT_INDEX, /* type */
1075 0, /* rightshift */
1076 2, /* size (0 = byte, 1 = short, 2 = long) */
1077 15, /* bitsize */
1078 FALSE, /* pc_relative */
1079 8, /* bitpos */
1080 complain_overflow_unsigned,/* complain_on_overflow */
1081 bfd_elf_generic_reloc, /* special_function */
1082 "R_C6000_DSBT_INDEX", /* name */
1083 TRUE, /* partial_inplace */
1084 0, /* src_mask */
1085 0x007fff00, /* dst_mask */
1086 FALSE), /* pcrel_offset */
1087 HOWTO (R_C6000_PREL31, /* type */
1088 1, /* rightshift */
1089 2, /* size (0 = byte, 1 = short, 2 = long) */
1090 31, /* bitsize */
1091 TRUE, /* pc_relative */
1092 0, /* bitpos */
1093 complain_overflow_dont,/* complain_on_overflow */
1094 bfd_elf_generic_reloc, /* special_function */
1095 "R_C6000_PREL31", /* name */
1096 TRUE, /* partial_inplace */
1097 0, /* src_mask */
1098 0x7fffffff, /* dst_mask */
1099 TRUE), /* pcrel_offset */
1100 HOWTO (R_C6000_COPY, /* type */
1101 0, /* rightshift */
1102 2, /* size (0 = byte, 1 = short, 2 = long) */
1103 32, /* bitsize */
1104 FALSE, /* pc_relative */
1105 0, /* bitpos */
1106 complain_overflow_dont,/* complain_on_overflow */
1107 bfd_elf_generic_reloc, /* special_function */
1108 "R_C6000_COPY", /* name */
1109 TRUE, /* partial_inplace */
1110 0, /* src_mask */
1111 0xffffffff, /* dst_mask */
1112 FALSE), /* pcrel_offset */
1113 HOWTO (R_C6000_JUMP_SLOT, /* type */
1114 0, /* rightshift */
1115 2, /* size (0 = byte, 1 = short, 2 = long) */
1116 32, /* bitsize */
1117 FALSE, /* pc_relative */
1118 0, /* bitpos */
1119 complain_overflow_dont,/* complain_on_overflow */
1120 bfd_elf_generic_reloc, /* special_function */
1121 "R_C6000_JUMP_SLOT", /* name */
1122 FALSE, /* partial_inplace */
1123 0, /* src_mask */
1124 0xffffffff, /* dst_mask */
1125 FALSE), /* pcrel_offset */
1126 HOWTO (R_C6000_EHTYPE, /* type */
1127 0, /* rightshift */
1128 2, /* size (0 = byte, 1 = short, 2 = long) */
1129 32, /* bitsize */
1130 FALSE, /* pc_relative */
1131 0, /* bitpos */
1132 complain_overflow_dont,/* complain_on_overflow */
1133 bfd_elf_generic_reloc, /* special_function */
1134 "R_C6000_EHTYPE", /* name */
1135 FALSE, /* partial_inplace */
1136 0, /* src_mask */
1137 0xffffffff, /* dst_mask */
1138 FALSE), /* pcrel_offset */
1139 EMPTY_HOWTO (R_C6000_PCR_H16),
1140 EMPTY_HOWTO (R_C6000_PCR_L16),
1141 EMPTY_HOWTO (31),
1142 EMPTY_HOWTO (32),
1143 EMPTY_HOWTO (33),
1144 EMPTY_HOWTO (34),
1145 EMPTY_HOWTO (35),
1146 EMPTY_HOWTO (36),
1147 EMPTY_HOWTO (37),
1148 EMPTY_HOWTO (38),
1149 EMPTY_HOWTO (39),
1150 EMPTY_HOWTO (40),
1151 EMPTY_HOWTO (41),
1152 EMPTY_HOWTO (42),
1153 EMPTY_HOWTO (43),
1154 EMPTY_HOWTO (44),
1155 EMPTY_HOWTO (45),
1156 EMPTY_HOWTO (46),
1157 EMPTY_HOWTO (47),
1158 EMPTY_HOWTO (48),
1159 EMPTY_HOWTO (49),
1160 EMPTY_HOWTO (50),
1161 EMPTY_HOWTO (51),
1162 EMPTY_HOWTO (52),
1163 EMPTY_HOWTO (53),
1164 EMPTY_HOWTO (54),
1165 EMPTY_HOWTO (55),
1166 EMPTY_HOWTO (56),
1167 EMPTY_HOWTO (57),
1168 EMPTY_HOWTO (58),
1169 EMPTY_HOWTO (59),
1170 EMPTY_HOWTO (60),
1171 EMPTY_HOWTO (61),
1172 EMPTY_HOWTO (62),
1173 EMPTY_HOWTO (63),
1174 EMPTY_HOWTO (64),
1175 EMPTY_HOWTO (65),
1176 EMPTY_HOWTO (66),
1177 EMPTY_HOWTO (67),
1178 EMPTY_HOWTO (68),
1179 EMPTY_HOWTO (69),
1180 EMPTY_HOWTO (70),
1181 EMPTY_HOWTO (71),
1182 EMPTY_HOWTO (72),
1183 EMPTY_HOWTO (73),
1184 EMPTY_HOWTO (74),
1185 EMPTY_HOWTO (75),
1186 EMPTY_HOWTO (76),
1187 EMPTY_HOWTO (77),
1188 EMPTY_HOWTO (78),
1189 EMPTY_HOWTO (79),
1190 EMPTY_HOWTO (80),
1191 EMPTY_HOWTO (81),
1192 EMPTY_HOWTO (82),
1193 EMPTY_HOWTO (83),
1194 EMPTY_HOWTO (84),
1195 EMPTY_HOWTO (85),
1196 EMPTY_HOWTO (86),
1197 EMPTY_HOWTO (87),
1198 EMPTY_HOWTO (88),
1199 EMPTY_HOWTO (89),
1200 EMPTY_HOWTO (90),
1201 EMPTY_HOWTO (91),
1202 EMPTY_HOWTO (92),
1203 EMPTY_HOWTO (93),
1204 EMPTY_HOWTO (94),
1205 EMPTY_HOWTO (95),
1206 EMPTY_HOWTO (96),
1207 EMPTY_HOWTO (97),
1208 EMPTY_HOWTO (98),
1209 EMPTY_HOWTO (99),
1210 EMPTY_HOWTO (100),
1211 EMPTY_HOWTO (101),
1212 EMPTY_HOWTO (102),
1213 EMPTY_HOWTO (103),
1214 EMPTY_HOWTO (104),
1215 EMPTY_HOWTO (105),
1216 EMPTY_HOWTO (106),
1217 EMPTY_HOWTO (107),
1218 EMPTY_HOWTO (108),
1219 EMPTY_HOWTO (109),
1220 EMPTY_HOWTO (110),
1221 EMPTY_HOWTO (111),
1222 EMPTY_HOWTO (112),
1223 EMPTY_HOWTO (113),
1224 EMPTY_HOWTO (114),
1225 EMPTY_HOWTO (115),
1226 EMPTY_HOWTO (116),
1227 EMPTY_HOWTO (117),
1228 EMPTY_HOWTO (118),
1229 EMPTY_HOWTO (119),
1230 EMPTY_HOWTO (120),
1231 EMPTY_HOWTO (121),
1232 EMPTY_HOWTO (122),
1233 EMPTY_HOWTO (123),
1234 EMPTY_HOWTO (124),
1235 EMPTY_HOWTO (125),
1236 EMPTY_HOWTO (126),
1237 EMPTY_HOWTO (127),
1238 EMPTY_HOWTO (128),
1239 EMPTY_HOWTO (129),
1240 EMPTY_HOWTO (130),
1241 EMPTY_HOWTO (131),
1242 EMPTY_HOWTO (132),
1243 EMPTY_HOWTO (133),
1244 EMPTY_HOWTO (134),
1245 EMPTY_HOWTO (135),
1246 EMPTY_HOWTO (136),
1247 EMPTY_HOWTO (137),
1248 EMPTY_HOWTO (138),
1249 EMPTY_HOWTO (139),
1250 EMPTY_HOWTO (140),
1251 EMPTY_HOWTO (141),
1252 EMPTY_HOWTO (142),
1253 EMPTY_HOWTO (143),
1254 EMPTY_HOWTO (144),
1255 EMPTY_HOWTO (145),
1256 EMPTY_HOWTO (146),
1257 EMPTY_HOWTO (147),
1258 EMPTY_HOWTO (148),
1259 EMPTY_HOWTO (149),
1260 EMPTY_HOWTO (150),
1261 EMPTY_HOWTO (151),
1262 EMPTY_HOWTO (152),
1263 EMPTY_HOWTO (153),
1264 EMPTY_HOWTO (154),
1265 EMPTY_HOWTO (155),
1266 EMPTY_HOWTO (156),
1267 EMPTY_HOWTO (157),
1268 EMPTY_HOWTO (158),
1269 EMPTY_HOWTO (159),
1270 EMPTY_HOWTO (160),
1271 EMPTY_HOWTO (161),
1272 EMPTY_HOWTO (162),
1273 EMPTY_HOWTO (163),
1274 EMPTY_HOWTO (164),
1275 EMPTY_HOWTO (165),
1276 EMPTY_HOWTO (166),
1277 EMPTY_HOWTO (167),
1278 EMPTY_HOWTO (168),
1279 EMPTY_HOWTO (169),
1280 EMPTY_HOWTO (170),
1281 EMPTY_HOWTO (171),
1282 EMPTY_HOWTO (172),
1283 EMPTY_HOWTO (173),
1284 EMPTY_HOWTO (174),
1285 EMPTY_HOWTO (175),
1286 EMPTY_HOWTO (176),
1287 EMPTY_HOWTO (177),
1288 EMPTY_HOWTO (178),
1289 EMPTY_HOWTO (179),
1290 EMPTY_HOWTO (180),
1291 EMPTY_HOWTO (181),
1292 EMPTY_HOWTO (182),
1293 EMPTY_HOWTO (183),
1294 EMPTY_HOWTO (184),
1295 EMPTY_HOWTO (185),
1296 EMPTY_HOWTO (186),
1297 EMPTY_HOWTO (187),
1298 EMPTY_HOWTO (188),
1299 EMPTY_HOWTO (189),
1300 EMPTY_HOWTO (190),
1301 EMPTY_HOWTO (191),
1302 EMPTY_HOWTO (192),
1303 EMPTY_HOWTO (193),
1304 EMPTY_HOWTO (194),
1305 EMPTY_HOWTO (195),
1306 EMPTY_HOWTO (196),
1307 EMPTY_HOWTO (197),
1308 EMPTY_HOWTO (198),
1309 EMPTY_HOWTO (199),
1310 EMPTY_HOWTO (200),
1311 EMPTY_HOWTO (201),
1312 EMPTY_HOWTO (202),
1313 EMPTY_HOWTO (203),
1314 EMPTY_HOWTO (204),
1315 EMPTY_HOWTO (205),
1316 EMPTY_HOWTO (206),
1317 EMPTY_HOWTO (207),
1318 EMPTY_HOWTO (208),
1319 EMPTY_HOWTO (209),
1320 EMPTY_HOWTO (210),
1321 EMPTY_HOWTO (211),
1322 EMPTY_HOWTO (212),
1323 EMPTY_HOWTO (213),
1324 EMPTY_HOWTO (214),
1325 EMPTY_HOWTO (215),
1326 EMPTY_HOWTO (216),
1327 EMPTY_HOWTO (217),
1328 EMPTY_HOWTO (218),
1329 EMPTY_HOWTO (219),
1330 EMPTY_HOWTO (220),
1331 EMPTY_HOWTO (221),
1332 EMPTY_HOWTO (222),
1333 EMPTY_HOWTO (223),
1334 EMPTY_HOWTO (224),
1335 EMPTY_HOWTO (225),
1336 EMPTY_HOWTO (226),
1337 EMPTY_HOWTO (227),
1338 EMPTY_HOWTO (228),
1339 EMPTY_HOWTO (229),
1340 EMPTY_HOWTO (230),
1341 EMPTY_HOWTO (231),
1342 EMPTY_HOWTO (232),
1343 EMPTY_HOWTO (233),
1344 EMPTY_HOWTO (234),
1345 EMPTY_HOWTO (235),
1346 EMPTY_HOWTO (236),
1347 EMPTY_HOWTO (237),
1348 EMPTY_HOWTO (238),
1349 EMPTY_HOWTO (239),
1350 EMPTY_HOWTO (240),
1351 EMPTY_HOWTO (241),
1352 EMPTY_HOWTO (242),
1353 EMPTY_HOWTO (243),
1354 EMPTY_HOWTO (244),
1355 EMPTY_HOWTO (245),
1356 EMPTY_HOWTO (246),
1357 EMPTY_HOWTO (247),
1358 EMPTY_HOWTO (248),
1359 EMPTY_HOWTO (249),
1360 EMPTY_HOWTO (250),
1361 EMPTY_HOWTO (251),
1362 EMPTY_HOWTO (252),
1363 HOWTO (R_C6000_ALIGN, /* type */
1364 0, /* rightshift */
1365 0, /* size (0 = byte, 1 = short, 2 = long) */
1366 0, /* bitsize */
1367 FALSE, /* pc_relative */
1368 0, /* bitpos */
1369 complain_overflow_dont,/* complain_on_overflow */
1370 bfd_elf_generic_reloc, /* special_function */
1371 "R_C6000_ALIGN", /* name */
1372 TRUE, /* partial_inplace */
1373 0, /* src_mask */
1374 0, /* dst_mask */
1375 FALSE), /* pcrel_offset */
1376 HOWTO (R_C6000_FPHEAD, /* type */
1377 0, /* rightshift */
1378 0, /* size (0 = byte, 1 = short, 2 = long) */
1379 0, /* bitsize */
1380 FALSE, /* pc_relative */
1381 0, /* bitpos */
1382 complain_overflow_dont,/* complain_on_overflow */
1383 bfd_elf_generic_reloc, /* special_function */
1384 "R_C6000_FPHEAD", /* name */
1385 TRUE, /* partial_inplace */
1386 0, /* src_mask */
1387 0, /* dst_mask */
1388 FALSE), /* pcrel_offset */
1389 HOWTO (R_C6000_NOCMP, /* type */
1390 0, /* rightshift */
1391 0, /* size (0 = byte, 1 = short, 2 = long) */
1392 0, /* bitsize */
1393 FALSE, /* pc_relative */
1394 0, /* bitpos */
1395 complain_overflow_dont,/* complain_on_overflow */
1396 bfd_elf_generic_reloc, /* special_function */
1397 "R_C6000_NOCMP", /* name */
1398 TRUE, /* partial_inplace */
1399 0, /* src_mask */
1400 0, /* dst_mask */
1401 FALSE) /* pcrel_offset */
1402 };
1403
1404 /* Map BFD relocations to ELF relocations. */
1405
1406 typedef struct
1407 {
1408 bfd_reloc_code_real_type bfd_reloc_val;
1409 enum elf_tic6x_reloc_type elf_reloc_val;
1410 } tic6x_reloc_map;
1411
1412 static const tic6x_reloc_map elf32_tic6x_reloc_map[] =
1413 {
1414 { BFD_RELOC_NONE, R_C6000_NONE },
1415 { BFD_RELOC_32, R_C6000_ABS32 },
1416 { BFD_RELOC_16, R_C6000_ABS16 },
1417 { BFD_RELOC_8, R_C6000_ABS8 },
1418 { BFD_RELOC_C6000_PCR_S21, R_C6000_PCR_S21 },
1419 { BFD_RELOC_C6000_PCR_S12, R_C6000_PCR_S12 },
1420 { BFD_RELOC_C6000_PCR_S10, R_C6000_PCR_S10 },
1421 { BFD_RELOC_C6000_PCR_S7, R_C6000_PCR_S7 },
1422 { BFD_RELOC_C6000_ABS_S16, R_C6000_ABS_S16 },
1423 { BFD_RELOC_C6000_ABS_L16, R_C6000_ABS_L16 },
1424 { BFD_RELOC_C6000_ABS_H16, R_C6000_ABS_H16 },
1425 { BFD_RELOC_C6000_SBR_U15_B, R_C6000_SBR_U15_B },
1426 { BFD_RELOC_C6000_SBR_U15_H, R_C6000_SBR_U15_H },
1427 { BFD_RELOC_C6000_SBR_U15_W, R_C6000_SBR_U15_W },
1428 { BFD_RELOC_C6000_SBR_S16, R_C6000_SBR_S16 },
1429 { BFD_RELOC_C6000_SBR_L16_B, R_C6000_SBR_L16_B },
1430 { BFD_RELOC_C6000_SBR_L16_H, R_C6000_SBR_L16_H },
1431 { BFD_RELOC_C6000_SBR_L16_W, R_C6000_SBR_L16_W },
1432 { BFD_RELOC_C6000_SBR_H16_B, R_C6000_SBR_H16_B },
1433 { BFD_RELOC_C6000_SBR_H16_H, R_C6000_SBR_H16_H },
1434 { BFD_RELOC_C6000_SBR_H16_W, R_C6000_SBR_H16_W },
1435 { BFD_RELOC_C6000_SBR_GOT_U15_W, R_C6000_SBR_GOT_U15_W },
1436 { BFD_RELOC_C6000_SBR_GOT_L16_W, R_C6000_SBR_GOT_L16_W },
1437 { BFD_RELOC_C6000_SBR_GOT_H16_W, R_C6000_SBR_GOT_H16_W },
1438 { BFD_RELOC_C6000_DSBT_INDEX, R_C6000_DSBT_INDEX },
1439 { BFD_RELOC_C6000_PREL31, R_C6000_PREL31 },
1440 { BFD_RELOC_C6000_COPY, R_C6000_COPY },
1441 { BFD_RELOC_C6000_JUMP_SLOT, R_C6000_JUMP_SLOT },
1442 { BFD_RELOC_C6000_EHTYPE, R_C6000_EHTYPE },
1443 { BFD_RELOC_C6000_PCR_H16, R_C6000_PCR_H16 },
1444 { BFD_RELOC_C6000_PCR_L16, R_C6000_PCR_L16 },
1445 { BFD_RELOC_C6000_ALIGN, R_C6000_ALIGN },
1446 { BFD_RELOC_C6000_FPHEAD, R_C6000_FPHEAD },
1447 { BFD_RELOC_C6000_NOCMP, R_C6000_NOCMP }
1448 };
1449
1450 static reloc_howto_type *
1451 elf32_tic6x_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
1452 {
1453 unsigned int i;
1454
1455 for (i = 0; i < ARRAY_SIZE (elf32_tic6x_reloc_map); i++)
1456 if (elf32_tic6x_reloc_map[i].bfd_reloc_val == code)
1457 {
1458 enum elf_tic6x_reloc_type elf_reloc_val;
1459 reloc_howto_type *howto;
1460
1461 elf_reloc_val = elf32_tic6x_reloc_map[i].elf_reloc_val;
1462 if (elf32_tic6x_tdata (abfd)->use_rela_p)
1463 howto = &elf32_tic6x_howto_table[elf_reloc_val];
1464 else
1465 howto = &elf32_tic6x_howto_table_rel[elf_reloc_val];
1466
1467 /* Some relocations are RELA-only; do not return them for
1468 REL. */
1469 if (howto->name == NULL)
1470 howto = NULL;
1471
1472 return howto;
1473 }
1474
1475 return NULL;
1476 }
1477
1478 static reloc_howto_type *
1479 elf32_tic6x_reloc_name_lookup (bfd *abfd, const char *r_name)
1480 {
1481 if (elf32_tic6x_tdata (abfd)->use_rela_p)
1482 {
1483 unsigned int i;
1484
1485 for (i = 0; i < ARRAY_SIZE (elf32_tic6x_howto_table); i++)
1486 if (elf32_tic6x_howto_table[i].name != NULL
1487 && strcasecmp (elf32_tic6x_howto_table[i].name, r_name) == 0)
1488 return &elf32_tic6x_howto_table[i];
1489 }
1490 else
1491 {
1492 unsigned int i;
1493
1494 for (i = 0; i < ARRAY_SIZE (elf32_tic6x_howto_table_rel); i++)
1495 if (elf32_tic6x_howto_table_rel[i].name != NULL
1496 && strcasecmp (elf32_tic6x_howto_table_rel[i].name, r_name) == 0)
1497 return &elf32_tic6x_howto_table_rel[i];
1498 }
1499
1500 return NULL;
1501 }
1502
1503 static void
1504 elf32_tic6x_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc,
1505 Elf_Internal_Rela *elf_reloc)
1506 {
1507 unsigned int r_type;
1508
1509 r_type = ELF32_R_TYPE (elf_reloc->r_info);
1510 if (r_type >= ARRAY_SIZE (elf32_tic6x_howto_table))
1511 bfd_reloc->howto = NULL;
1512 else
1513 bfd_reloc->howto = &elf32_tic6x_howto_table[r_type];
1514 }
1515
1516 static void
1517 elf32_tic6x_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc,
1518 Elf_Internal_Rela *elf_reloc)
1519 {
1520 unsigned int r_type;
1521
1522 r_type = ELF32_R_TYPE (elf_reloc->r_info);
1523 if (r_type >= ARRAY_SIZE (elf32_tic6x_howto_table_rel))
1524 bfd_reloc->howto = NULL;
1525 else
1526 bfd_reloc->howto = &elf32_tic6x_howto_table_rel[r_type];
1527 }
1528
1529 void
1530 elf32_tic6x_set_use_rela_p (bfd *abfd, bfd_boolean use_rela_p)
1531 {
1532 elf32_tic6x_tdata (abfd)->use_rela_p = use_rela_p;
1533 }
1534
1535 /* Create an entry in a C6X ELF linker hash table. */
1536
1537 static struct bfd_hash_entry *
1538 elf32_tic6x_link_hash_newfunc (struct bfd_hash_entry *entry,
1539 struct bfd_hash_table *table,
1540 const char *string)
1541 {
1542 /* Allocate the structure if it has not already been allocated by a
1543 subclass. */
1544 if (entry == NULL)
1545 {
1546 entry = bfd_hash_allocate (table,
1547 sizeof (struct elf32_tic6x_link_hash_entry));
1548 if (entry == NULL)
1549 return entry;
1550 }
1551
1552 /* Call the allocation method of the superclass. */
1553 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1554 if (entry != NULL)
1555 {
1556 struct elf32_tic6x_link_hash_entry *eh;
1557
1558 eh = (struct elf32_tic6x_link_hash_entry *) entry;
1559 eh->dyn_relocs = NULL;
1560 }
1561
1562 return entry;
1563 }
1564
1565 /* Create a C6X ELF linker hash table. */
1566
1567 static struct bfd_link_hash_table *
1568 elf32_tic6x_link_hash_table_create (bfd *abfd)
1569 {
1570 struct elf32_tic6x_link_hash_table *ret;
1571 bfd_size_type amt = sizeof (struct elf32_tic6x_link_hash_table);
1572
1573 ret = bfd_malloc (amt);
1574 if (ret == NULL)
1575 return NULL;
1576
1577 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
1578 elf32_tic6x_link_hash_newfunc,
1579 sizeof (struct elf32_tic6x_link_hash_entry),
1580 TIC6X_ELF_DATA))
1581 {
1582 free (ret);
1583 return NULL;
1584 }
1585
1586 ret->sym_cache.abfd = NULL;
1587 ret->obfd = abfd;
1588 ret->elf.is_relocatable_executable = 1;
1589
1590 return &ret->elf.root;
1591 }
1592
1593 static bfd_boolean
1594 elf32_tic6x_final_link (bfd *abfd, struct bfd_link_info *info)
1595 {
1596 if (info->shared)
1597 {
1598 obj_attribute *out_attr;
1599 out_attr = elf_known_obj_attributes_proc (abfd);
1600 if (out_attr[Tag_ABI_PIC].i == 0)
1601 {
1602 _bfd_error_handler (_("warning: generating a shared library "
1603 "containing non-PIC code"));
1604 }
1605 if (out_attr[Tag_ABI_PID].i == 0)
1606 {
1607 _bfd_error_handler (_("warning: generating a shared library "
1608 "containing non-PID code"));
1609 }
1610 }
1611 /* Invoke the regular ELF backend linker to do all the work. */
1612 if (!bfd_elf_final_link (abfd, info))
1613 return FALSE;
1614
1615 return TRUE;
1616 }
1617
1618 /* Destroy a C6X ELF linker hash table. */
1619
1620 static void
1621 elf32_tic6x_link_hash_table_free (struct bfd_link_hash_table *hash)
1622 {
1623 _bfd_generic_link_hash_table_free (hash);
1624 }
1625
1626 /* Called to pass PARAMS to the backend. We store them in the hash table
1627 associated with INFO. */
1628
1629 void
1630 elf32_tic6x_setup (struct bfd_link_info *info,
1631 struct elf32_tic6x_params *params)
1632 {
1633 struct elf32_tic6x_link_hash_table *htab = elf32_tic6x_hash_table (info);
1634 htab->params = *params;
1635 }
1636
1637 /* Determine if we're dealing with a DSBT object. */
1638
1639 static bfd_boolean
1640 elf32_tic6x_using_dsbt (bfd *abfd)
1641 {
1642 return bfd_elf_get_obj_attr_int (abfd, OBJ_ATTR_PROC,
1643 Tag_ABI_DSBT);
1644 }
1645
1646 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got and .dsbt
1647 sections in DYNOBJ, and set up shortcuts to them in our hash
1648 table. */
1649
1650 static bfd_boolean
1651 elf32_tic6x_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
1652 {
1653 struct elf32_tic6x_link_hash_table *htab;
1654 flagword flags;
1655
1656 htab = elf32_tic6x_hash_table (info);
1657 if (htab == NULL)
1658 return FALSE;
1659
1660 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
1661 return FALSE;
1662
1663 /* Create .dsbt */
1664 flags = (SEC_ALLOC | SEC_LOAD
1665 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1666 htab->dsbt = bfd_make_section_anyway_with_flags (dynobj, ".dsbt",
1667 flags);
1668 if (htab->dsbt == NULL
1669 || ! bfd_set_section_alignment (dynobj, htab->dsbt, 2)
1670 || ! bfd_set_section_alignment (dynobj, htab->elf.splt, 5))
1671 return FALSE;
1672
1673 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
1674 if (!info->shared)
1675 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
1676
1677 if (!htab->sdynbss
1678 || (!info->shared && !htab->srelbss))
1679 abort ();
1680
1681 return TRUE;
1682 }
1683
1684 static bfd_boolean
1685 elf32_tic6x_mkobject (bfd *abfd)
1686 {
1687 bfd_boolean ret;
1688
1689 ret = bfd_elf_allocate_object (abfd, sizeof (struct elf32_tic6x_obj_tdata),
1690 TIC6X_ELF_DATA);
1691 if (ret)
1692 elf32_tic6x_set_use_rela_p (abfd, TRUE);
1693 return ret;
1694 }
1695
1696 /* Install relocation RELA into section SRELA, incrementing its
1697 reloc_count. */
1698
1699 static void
1700 elf32_tic6x_install_rela (bfd *output_bfd, asection *srela,
1701 Elf_Internal_Rela *rela)
1702 {
1703 bfd_byte *loc;
1704 bfd_vma off = srela->reloc_count++ * sizeof (Elf32_External_Rela);
1705 loc = srela->contents + off;
1706 BFD_ASSERT (off < srela->size);
1707 bfd_elf32_swap_reloca_out (output_bfd, rela, loc);
1708 }
1709
1710 /* Create a dynamic reloc against the GOT at offset OFFSET. The contents
1711 of the GOT at this offset have been initialized with the relocation. */
1712
1713 static void
1714 elf32_tic6x_make_got_dynreloc (bfd *output_bfd,
1715 struct elf32_tic6x_link_hash_table *htab,
1716 asection *sym_sec, bfd_vma offset)
1717 {
1718 asection *sgot = htab->elf.sgot;
1719 Elf_Internal_Rela outrel;
1720 int dynindx;
1721
1722 outrel.r_offset = sgot->output_section->vma + sgot->output_offset + offset;
1723 outrel.r_addend = bfd_get_32 (output_bfd, sgot->contents + offset);
1724 if (sym_sec && sym_sec->output_section
1725 && ! bfd_is_abs_section (sym_sec->output_section)
1726 && ! bfd_is_und_section (sym_sec->output_section))
1727 {
1728 dynindx = elf_section_data (sym_sec->output_section)->dynindx;
1729 outrel.r_addend -= sym_sec->output_section->vma;
1730 }
1731 else
1732 {
1733 dynindx = 0;
1734 }
1735 outrel.r_info = ELF32_R_INFO (dynindx, R_C6000_ABS32);
1736 elf32_tic6x_install_rela (output_bfd, htab->elf.srelgot, &outrel);
1737 }
1738
1739 /* Finish up dynamic symbol handling. We set the contents of various
1740 dynamic sections here. */
1741
1742 static bfd_boolean
1743 elf32_tic6x_finish_dynamic_symbol (bfd * output_bfd,
1744 struct bfd_link_info *info,
1745 struct elf_link_hash_entry *h,
1746 Elf_Internal_Sym * sym)
1747 {
1748 bfd *dynobj;
1749 struct elf32_tic6x_link_hash_table *htab;
1750
1751 htab = elf32_tic6x_hash_table (info);
1752 dynobj = htab->elf.dynobj;
1753
1754 if (h->plt.offset != (bfd_vma) -1)
1755 {
1756 bfd_vma plt_index;
1757 bfd_vma got_section_offset, got_dp_offset, rela_offset;
1758 Elf_Internal_Rela rela;
1759 bfd_byte *loc;
1760 asection *plt, *gotplt, *relplt;
1761 const struct elf_backend_data *bed;
1762
1763 bed = get_elf_backend_data (output_bfd);
1764
1765 BFD_ASSERT (htab->elf.splt != NULL);
1766 plt = htab->elf.splt;
1767 gotplt = htab->elf.sgotplt;
1768 relplt = htab->elf.srelplt;
1769
1770 /* This symbol has an entry in the procedure linkage table. Set
1771 it up. */
1772
1773 if ((h->dynindx == -1
1774 && !((h->forced_local || info->executable)
1775 && h->def_regular
1776 && h->type == STT_GNU_IFUNC))
1777 || plt == NULL
1778 || gotplt == NULL
1779 || relplt == NULL)
1780 abort ();
1781
1782 /* Get the index in the procedure linkage table which
1783 corresponds to this symbol. This is the index of this symbol
1784 in all the symbols for which we are making plt entries. The
1785 first entry in the procedure linkage table is reserved.
1786
1787 Get the offset into the .got table of the entry that
1788 corresponds to this function. Each .got entry is 4 bytes.
1789 The first three are reserved.
1790
1791 For static executables, we don't reserve anything. */
1792
1793 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
1794 got_section_offset = plt_index + bed->got_header_size / 4;
1795 got_dp_offset = got_section_offset + htab->params.dsbt_size;
1796 rela_offset = plt_index * sizeof (Elf32_External_Rela);
1797
1798 got_section_offset *= 4;
1799
1800 /* Fill in the entry in the procedure linkage table. */
1801
1802 /* ldw .d2t2 *+B14($GOT(f)), b2 */
1803 bfd_put_32 (output_bfd, got_dp_offset << 8 | 0x0100006e,
1804 plt->contents + h->plt.offset);
1805 /* mvk .s2 low(rela_offset), b0 */
1806 bfd_put_32 (output_bfd, (rela_offset & 0xffff) << 7 | 0x0000002a,
1807 plt->contents + h->plt.offset + 4);
1808 /* mvkh .s2 high(rela_offset), b0 */
1809 bfd_put_32 (output_bfd, ((rela_offset >> 16) & 0xffff) << 7 | 0x0000006a,
1810 plt->contents + h->plt.offset + 8);
1811 /* nop 2 */
1812 bfd_put_32 (output_bfd, 0x00002000,
1813 plt->contents + h->plt.offset + 12);
1814 /* b .s2 b2 */
1815 bfd_put_32 (output_bfd, 0x00080362,
1816 plt->contents + h->plt.offset + 16);
1817 /* nop 5 */
1818 bfd_put_32 (output_bfd, 0x00008000,
1819 plt->contents + h->plt.offset + 20);
1820
1821 /* Fill in the entry in the global offset table. */
1822 bfd_put_32 (output_bfd,
1823 (plt->output_section->vma + plt->output_offset),
1824 gotplt->contents + got_section_offset);
1825
1826 /* Fill in the entry in the .rel.plt section. */
1827 rela.r_offset = (gotplt->output_section->vma
1828 + gotplt->output_offset
1829 + got_section_offset);
1830 rela.r_info = ELF32_R_INFO (h->dynindx, R_C6000_JUMP_SLOT);
1831 rela.r_addend = 0;
1832 loc = relplt->contents + rela_offset;
1833 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1834
1835 if (!h->def_regular)
1836 {
1837 /* Mark the symbol as undefined, rather than as defined in
1838 the .plt section. */
1839 sym->st_shndx = SHN_UNDEF;
1840 sym->st_value = 0;
1841 }
1842 }
1843
1844 if (h->got.offset != (bfd_vma) -1)
1845 {
1846 asection *sgot;
1847 asection *srela;
1848
1849 /* This symbol has an entry in the global offset table.
1850 Set it up. */
1851
1852 sgot = bfd_get_section_by_name (dynobj, ".got");
1853 srela = bfd_get_section_by_name (dynobj, ".rela.got");
1854 BFD_ASSERT (sgot != NULL && srela != NULL);
1855
1856 /* If this is a -Bsymbolic link, and the symbol is defined
1857 locally, we just want to emit a RELATIVE reloc. Likewise if
1858 the symbol was forced to be local because of a version file.
1859 The entry in the global offset table will already have been
1860 initialized in the relocate_section function. */
1861 if (info->shared
1862 && (info->symbolic
1863 || h->dynindx == -1 || h->forced_local) && h->def_regular)
1864 {
1865 asection *s = h->root.u.def.section;
1866 elf32_tic6x_make_got_dynreloc (output_bfd, htab, s,
1867 h->got.offset & ~(bfd_vma) 1);
1868 }
1869 else
1870 {
1871 Elf_Internal_Rela outrel;
1872 bfd_put_32 (output_bfd, (bfd_vma) 0,
1873 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
1874 outrel.r_offset = (sgot->output_section->vma
1875 + sgot->output_offset
1876 + (h->got.offset & ~(bfd_vma) 1));
1877 outrel.r_info = ELF32_R_INFO (h->dynindx, R_C6000_ABS32);
1878 outrel.r_addend = 0;
1879
1880 elf32_tic6x_install_rela (output_bfd, srela, &outrel);
1881 }
1882 }
1883
1884 if (h->needs_copy)
1885 {
1886 Elf_Internal_Rela rel;
1887
1888 /* This symbol needs a copy reloc. Set it up. */
1889
1890 if (h->dynindx == -1
1891 || (h->root.type != bfd_link_hash_defined
1892 && h->root.type != bfd_link_hash_defweak)
1893 || htab->srelbss == NULL)
1894 abort ();
1895
1896 rel.r_offset = (h->root.u.def.value
1897 + h->root.u.def.section->output_section->vma
1898 + h->root.u.def.section->output_offset);
1899 rel.r_info = ELF32_R_INFO (h->dynindx, R_C6000_COPY);
1900 rel.r_addend = 0;
1901
1902 elf32_tic6x_install_rela (output_bfd, htab->srelbss, &rel);
1903 }
1904
1905 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
1906 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
1907 || h == elf_hash_table (info)->hgot)
1908 sym->st_shndx = SHN_ABS;
1909
1910 return TRUE;
1911 }
1912
1913 /* Unwinding tables are not referenced directly. This pass marks them as
1914 required if the corresponding code section is marked. */
1915
1916 static bfd_boolean
1917 elf32_tic6x_gc_mark_extra_sections (struct bfd_link_info *info,
1918 elf_gc_mark_hook_fn gc_mark_hook)
1919 {
1920 bfd *sub;
1921 Elf_Internal_Shdr **elf_shdrp;
1922 bfd_boolean again;
1923
1924 _bfd_elf_gc_mark_extra_sections (info, gc_mark_hook);
1925
1926 /* Marking EH data may cause additional code sections to be marked,
1927 requiring multiple passes. */
1928 again = TRUE;
1929 while (again)
1930 {
1931 again = FALSE;
1932 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
1933 {
1934 asection *o;
1935
1936 if (! is_tic6x_elf (sub))
1937 continue;
1938
1939 elf_shdrp = elf_elfsections (sub);
1940 for (o = sub->sections; o != NULL; o = o->next)
1941 {
1942 Elf_Internal_Shdr *hdr;
1943
1944 hdr = &elf_section_data (o)->this_hdr;
1945 if (hdr->sh_type == SHT_C6000_UNWIND
1946 && hdr->sh_link
1947 && hdr->sh_link < elf_numsections (sub)
1948 && !o->gc_mark
1949 && elf_shdrp[hdr->sh_link]->bfd_section->gc_mark)
1950 {
1951 again = TRUE;
1952 if (!_bfd_elf_gc_mark (info, o, gc_mark_hook))
1953 return FALSE;
1954 }
1955 }
1956 }
1957 }
1958
1959 return TRUE;
1960 }
1961
1962 /* Return TRUE if this is an unwinding table index. */
1963
1964 static bfd_boolean
1965 is_tic6x_elf_unwind_section_name (const char *name)
1966 {
1967 return (CONST_STRNEQ (name, ELF_STRING_C6000_unwind)
1968 || CONST_STRNEQ (name, ELF_STRING_C6000_unwind_once));
1969 }
1970
1971
1972 /* Set the type and flags for an unwinding index table. We do this by
1973 the section name, which is a hack, but ought to work. */
1974
1975 static bfd_boolean
1976 elf32_tic6x_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1977 Elf_Internal_Shdr *hdr, asection *sec)
1978 {
1979 const char * name;
1980
1981 name = bfd_get_section_name (abfd, sec);
1982
1983 if (is_tic6x_elf_unwind_section_name (name))
1984 {
1985 hdr->sh_type = SHT_C6000_UNWIND;
1986 hdr->sh_flags |= SHF_LINK_ORDER;
1987 }
1988
1989 return TRUE;
1990 }
1991
1992 /* Update the got entry reference counts for the section being removed. */
1993
1994 static bfd_boolean
1995 elf32_tic6x_gc_sweep_hook (bfd *abfd,
1996 struct bfd_link_info *info,
1997 asection *sec,
1998 const Elf_Internal_Rela *relocs)
1999 {
2000 struct elf32_tic6x_link_hash_table *htab;
2001 Elf_Internal_Shdr *symtab_hdr;
2002 struct elf_link_hash_entry **sym_hashes;
2003 bfd_signed_vma *local_got_refcounts;
2004 const Elf_Internal_Rela *rel, *relend;
2005
2006 if (info->relocatable)
2007 return TRUE;
2008
2009 htab = elf32_tic6x_hash_table (info);
2010 if (htab == NULL)
2011 return FALSE;
2012
2013 elf_section_data (sec)->local_dynrel = NULL;
2014
2015 symtab_hdr = &elf_symtab_hdr (abfd);
2016 sym_hashes = elf_sym_hashes (abfd);
2017 local_got_refcounts = elf_local_got_refcounts (abfd);
2018
2019 relend = relocs + sec->reloc_count;
2020 for (rel = relocs; rel < relend; rel++)
2021 {
2022 unsigned long r_symndx;
2023 unsigned int r_type;
2024 struct elf_link_hash_entry *h = NULL;
2025
2026 r_symndx = ELF32_R_SYM (rel->r_info);
2027 if (r_symndx >= symtab_hdr->sh_info)
2028 {
2029 struct elf32_tic6x_link_hash_entry *eh;
2030 struct elf_dyn_relocs **pp;
2031 struct elf_dyn_relocs *p;
2032
2033 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2034 while (h->root.type == bfd_link_hash_indirect
2035 || h->root.type == bfd_link_hash_warning)
2036 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2037 eh = (struct elf32_tic6x_link_hash_entry *) h;
2038
2039 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
2040 if (p->sec == sec)
2041 {
2042 /* Everything must go for SEC. */
2043 *pp = p->next;
2044 break;
2045 }
2046 }
2047
2048 r_type = ELF32_R_TYPE (rel->r_info);
2049
2050 switch (r_type)
2051 {
2052 case R_C6000_SBR_GOT_U15_W:
2053 case R_C6000_SBR_GOT_L16_W:
2054 case R_C6000_SBR_GOT_H16_W:
2055 case R_C6000_EHTYPE:
2056 if (h != NULL)
2057 {
2058 if (h->got.refcount > 0)
2059 h->got.refcount -= 1;
2060 }
2061 else if (local_got_refcounts != NULL)
2062 {
2063 if (local_got_refcounts[r_symndx] > 0)
2064 local_got_refcounts[r_symndx] -= 1;
2065 }
2066 break;
2067
2068 default:
2069 break;
2070 }
2071 }
2072
2073 return TRUE;
2074 }
2075
2076 /* Adjust a symbol defined by a dynamic object and referenced by a
2077 regular object. The current definition is in some section of the
2078 dynamic object, but we're not including those sections. We have to
2079 change the definition to something the rest of the link can
2080 understand. */
2081
2082 static bfd_boolean
2083 elf32_tic6x_adjust_dynamic_symbol (struct bfd_link_info *info,
2084 struct elf_link_hash_entry *h)
2085 {
2086 struct elf32_tic6x_link_hash_table *htab;
2087 bfd *dynobj;
2088 asection *s;
2089
2090 dynobj = elf_hash_table (info)->dynobj;
2091
2092 /* Make sure we know what is going on here. */
2093 BFD_ASSERT (dynobj != NULL
2094 && (h->needs_plt
2095 || h->u.weakdef != NULL
2096 || (h->def_dynamic && h->ref_regular && !h->def_regular)));
2097
2098 /* If this is a function, put it in the procedure linkage table. We
2099 will fill in the contents of the procedure linkage table later,
2100 when we know the address of the .got section. */
2101 if (h->type == STT_FUNC
2102 || h->needs_plt)
2103 {
2104 if (h->plt.refcount <= 0
2105 || SYMBOL_CALLS_LOCAL (info, h)
2106 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2107 && h->root.type == bfd_link_hash_undefweak))
2108 {
2109 /* This case can occur if we saw a PLT32 reloc in an input
2110 file, but the symbol was never referred to by a dynamic
2111 object, or if all references were garbage collected. In
2112 such a case, we don't actually need to build a procedure
2113 linkage table, and we can just do a PC32 reloc instead. */
2114 h->plt.offset = (bfd_vma) -1;
2115 h->needs_plt = 0;
2116 }
2117
2118 return TRUE;
2119 }
2120
2121 /* If this is a weak symbol, and there is a real definition, the
2122 processor independent code will have arranged for us to see the
2123 real definition first, and we can just use the same value. */
2124 if (h->u.weakdef != NULL)
2125 {
2126 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2127 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2128 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2129 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2130 h->non_got_ref = h->u.weakdef->non_got_ref;
2131 return TRUE;
2132 }
2133
2134 /* This is a reference to a symbol defined by a dynamic object which
2135 is not a function. */
2136
2137 /* If we are creating a shared library, we must presume that the
2138 only references to the symbol are via the global offset table.
2139 For such cases we need not do anything here; the relocations will
2140 be handled correctly by relocate_section. */
2141 if (info->shared)
2142 return TRUE;
2143
2144 /* If there are no references to this symbol that do not use the
2145 GOT, we don't need to generate a copy reloc. */
2146 if (!h->non_got_ref)
2147 return TRUE;
2148
2149 /* If -z nocopyreloc was given, we won't generate them either. */
2150 if (info->nocopyreloc)
2151 {
2152 h->non_got_ref = 0;
2153 return TRUE;
2154 }
2155
2156 htab = elf32_tic6x_hash_table (info);
2157 if (htab == NULL)
2158 return FALSE;
2159
2160 if (h->size == 0)
2161 {
2162 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
2163 h->root.root.string);
2164 return TRUE;
2165 }
2166
2167 /* We must allocate the symbol in our .dynbss section, which will
2168 become part of the .bss section of the executable. There will be
2169 an entry for this symbol in the .dynsym section. The dynamic
2170 object will contain position independent code, so all references
2171 from the dynamic object to this symbol will go through the global
2172 offset table. The dynamic linker will use the .dynsym entry to
2173 determine the address it must put in the global offset table, so
2174 both the dynamic object and the regular object will refer to the
2175 same memory location for the variable. */
2176
2177 /* We must generate a R_C6000_COPY reloc to tell the dynamic linker to
2178 copy the initial value out of the dynamic object and into the
2179 runtime process image. */
2180 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2181 {
2182 htab->srelbss->size += sizeof (Elf32_External_Rela);
2183 h->needs_copy = 1;
2184 }
2185
2186 s = htab->sdynbss;
2187
2188 return _bfd_elf_adjust_dynamic_copy (h, s);
2189 }
2190
2191 static bfd_boolean
2192 elf32_tic6x_new_section_hook (bfd *abfd, asection *sec)
2193 {
2194 bfd_boolean ret;
2195
2196 /* Allocate target specific section data. */
2197 if (!sec->used_by_bfd)
2198 {
2199 _tic6x_elf_section_data *sdata;
2200 bfd_size_type amt = sizeof (*sdata);
2201
2202 sdata = (_tic6x_elf_section_data *) bfd_zalloc (abfd, amt);
2203 if (sdata == NULL)
2204 return FALSE;
2205 sec->used_by_bfd = sdata;
2206 }
2207
2208 ret = _bfd_elf_new_section_hook (abfd, sec);
2209 sec->use_rela_p = elf32_tic6x_tdata (abfd)->use_rela_p;
2210
2211 return ret;
2212 }
2213
2214 /* Return true if relocation REL against section SEC is a REL rather
2215 than RELA relocation. RELOCS is the first relocation in the
2216 section and ABFD is the bfd that contains SEC. */
2217
2218 static bfd_boolean
2219 elf32_tic6x_rel_relocation_p (bfd *abfd, asection *sec,
2220 const Elf_Internal_Rela *relocs,
2221 const Elf_Internal_Rela *rel)
2222 {
2223 Elf_Internal_Shdr *rel_hdr;
2224 const struct elf_backend_data *bed;
2225
2226 /* To determine which flavor of relocation this is, we depend on the
2227 fact that the INPUT_SECTION's REL_HDR is read before RELA_HDR. */
2228 rel_hdr = elf_section_data (sec)->rel.hdr;
2229 if (rel_hdr == NULL)
2230 return FALSE;
2231 bed = get_elf_backend_data (abfd);
2232 return ((size_t) (rel - relocs)
2233 < NUM_SHDR_ENTRIES (rel_hdr) * bed->s->int_rels_per_ext_rel);
2234 }
2235
2236 /* We need dynamic symbols for every section, since segments can
2237 relocate independently. */
2238 static bfd_boolean
2239 elf32_tic6x_link_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED,
2240 struct bfd_link_info *info ATTRIBUTE_UNUSED,
2241 asection *p)
2242 {
2243 switch (elf_section_data (p)->this_hdr.sh_type)
2244 {
2245 case SHT_PROGBITS:
2246 case SHT_NOBITS:
2247 /* If sh_type is yet undecided, assume it could be
2248 SHT_PROGBITS/SHT_NOBITS. */
2249 case SHT_NULL:
2250 return FALSE;
2251
2252 /* There shouldn't be section relative relocations
2253 against any other section. */
2254 default:
2255 return TRUE;
2256 }
2257 }
2258
2259 static bfd_boolean
2260 elf32_tic6x_relocate_section (bfd *output_bfd,
2261 struct bfd_link_info *info,
2262 bfd *input_bfd,
2263 asection *input_section,
2264 bfd_byte *contents,
2265 Elf_Internal_Rela *relocs,
2266 Elf_Internal_Sym *local_syms,
2267 asection **local_sections)
2268 {
2269 struct elf32_tic6x_link_hash_table *htab;
2270 Elf_Internal_Shdr *symtab_hdr;
2271 struct elf_link_hash_entry **sym_hashes;
2272 bfd_vma *local_got_offsets;
2273 Elf_Internal_Rela *rel;
2274 Elf_Internal_Rela *relend;
2275 bfd_boolean ok = TRUE;
2276
2277 htab = elf32_tic6x_hash_table (info);
2278 symtab_hdr = & elf_symtab_hdr (input_bfd);
2279 sym_hashes = elf_sym_hashes (input_bfd);
2280 local_got_offsets = elf_local_got_offsets (input_bfd);
2281
2282 relend = relocs + input_section->reloc_count;
2283
2284 for (rel = relocs; rel < relend; rel ++)
2285 {
2286 int r_type;
2287 unsigned long r_symndx;
2288 arelent bfd_reloc;
2289 reloc_howto_type *howto;
2290 Elf_Internal_Sym *sym;
2291 asection *sec;
2292 struct elf_link_hash_entry *h;
2293 bfd_vma off, off2, relocation;
2294 bfd_boolean unresolved_reloc;
2295 bfd_reloc_status_type r;
2296 struct bfd_link_hash_entry *sbh;
2297 bfd_boolean is_rel;
2298
2299 r_type = ELF32_R_TYPE (rel->r_info);
2300 r_symndx = ELF32_R_SYM (rel->r_info);
2301
2302 is_rel = elf32_tic6x_rel_relocation_p (input_bfd, input_section,
2303 relocs, rel);
2304
2305 if (is_rel)
2306 elf32_tic6x_info_to_howto_rel (input_bfd, &bfd_reloc, rel);
2307 else
2308 elf32_tic6x_info_to_howto (input_bfd, &bfd_reloc, rel);
2309 howto = bfd_reloc.howto;
2310 if (howto == NULL)
2311 {
2312 bfd_set_error (bfd_error_bad_value);
2313 return FALSE;
2314 }
2315
2316 h = NULL;
2317 sym = NULL;
2318 sec = NULL;
2319 unresolved_reloc = FALSE;
2320
2321 if (r_symndx < symtab_hdr->sh_info)
2322 {
2323 sym = local_syms + r_symndx;
2324 sec = local_sections[r_symndx];
2325 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2326 }
2327 else
2328 {
2329 bfd_boolean warned;
2330
2331 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2332 r_symndx, symtab_hdr, sym_hashes,
2333 h, sec, relocation,
2334 unresolved_reloc, warned);
2335 }
2336
2337 if (sec != NULL && elf_discarded_section (sec))
2338 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2339 rel, relend, howto, contents);
2340
2341 if (info->relocatable)
2342 {
2343 if (is_rel
2344 && sym != NULL
2345 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2346 {
2347 rel->r_addend = 0;
2348 relocation = sec->output_offset + sym->st_value;
2349 r = _bfd_relocate_contents (howto, input_bfd, relocation,
2350 contents + rel->r_offset);
2351 goto done_reloc;
2352 }
2353 continue;
2354 }
2355
2356 switch (r_type)
2357 {
2358 case R_C6000_NONE:
2359 case R_C6000_ALIGN:
2360 case R_C6000_FPHEAD:
2361 case R_C6000_NOCMP:
2362 /* No action needed. */
2363 continue;
2364
2365 case R_C6000_PCR_S21:
2366 /* A branch to an undefined weak symbol is turned into a
2367 "b .s2 B3" instruction if the existing insn is of the
2368 form "b .s2 symbol". */
2369 if (h ? h->root.type == bfd_link_hash_undefweak
2370 && (htab->elf.splt == NULL || h->plt.offset == (bfd_vma) -1)
2371 : r_symndx != STN_UNDEF && bfd_is_und_section (sec))
2372 {
2373 unsigned long oldval;
2374 oldval = bfd_get_32 (input_bfd, contents + rel->r_offset);
2375
2376 if ((oldval & 0x7e) == 0x12)
2377 {
2378 oldval &= 0xF0000001;
2379 bfd_put_32 (input_bfd, oldval | 0x000c0362,
2380 contents + rel->r_offset);
2381 r = bfd_reloc_ok;
2382 goto done_reloc;
2383 }
2384 }
2385
2386 case R_C6000_PCR_S12:
2387 case R_C6000_PCR_S10:
2388 case R_C6000_PCR_S7:
2389 if (h != NULL
2390 && h->plt.offset != (bfd_vma) -1
2391 && htab->elf.splt != NULL)
2392 {
2393 relocation = (htab->elf.splt->output_section->vma
2394 + htab->elf.splt->output_offset
2395 + h->plt.offset);
2396 }
2397
2398 /* Generic PC-relative handling produces a value relative to
2399 the exact location of the relocation. Adjust it to be
2400 relative to the start of the fetch packet instead. */
2401 relocation += (input_section->output_section->vma
2402 + input_section->output_offset
2403 + rel->r_offset) & 0x1f;
2404 unresolved_reloc = FALSE;
2405 break;
2406
2407 case R_C6000_PCR_H16:
2408 case R_C6000_PCR_L16:
2409 off = (input_section->output_section->vma
2410 + input_section->output_offset
2411 + rel->r_offset);
2412 /* These must be calculated as R = S - FP(FP(PC) - A).
2413 PC, here, is the value we just computed in OFF. RELOCATION
2414 has the address of S + A. */
2415 relocation -= rel->r_addend;
2416 off2 = ((off & ~(bfd_vma)0x1f) - rel->r_addend) & (bfd_vma)~0x1f;
2417 off2 = relocation - off2;
2418 relocation = off + off2;
2419 break;
2420
2421 case R_C6000_DSBT_INDEX:
2422 relocation = elf32_tic6x_hash_table (info)->params.dsbt_index;
2423 if (!info->shared || relocation != 0)
2424 break;
2425
2426 /* fall through */
2427 case R_C6000_ABS32:
2428 case R_C6000_ABS16:
2429 case R_C6000_ABS8:
2430 case R_C6000_ABS_S16:
2431 case R_C6000_ABS_L16:
2432 case R_C6000_ABS_H16:
2433 /* When generating a shared object or relocatable executable, these
2434 relocations are copied into the output file to be resolved at
2435 run time. */
2436 if ((info->shared || elf32_tic6x_using_dsbt (output_bfd))
2437 && (input_section->flags & SEC_ALLOC)
2438 && (h == NULL
2439 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2440 || h->root.type != bfd_link_hash_undefweak))
2441 {
2442 Elf_Internal_Rela outrel;
2443 bfd_boolean skip, relocate;
2444 asection *sreloc;
2445
2446 unresolved_reloc = FALSE;
2447
2448 sreloc = elf_section_data (input_section)->sreloc;
2449 BFD_ASSERT (sreloc != NULL && sreloc->contents != NULL);
2450
2451 skip = FALSE;
2452 relocate = FALSE;
2453
2454 outrel.r_offset =
2455 _bfd_elf_section_offset (output_bfd, info, input_section,
2456 rel->r_offset);
2457 if (outrel.r_offset == (bfd_vma) -1)
2458 skip = TRUE;
2459 else if (outrel.r_offset == (bfd_vma) -2)
2460 skip = TRUE, relocate = TRUE;
2461 outrel.r_offset += (input_section->output_section->vma
2462 + input_section->output_offset);
2463
2464 if (skip)
2465 memset (&outrel, 0, sizeof outrel);
2466 else if (h != NULL
2467 && h->dynindx != -1
2468 && (!info->shared
2469 || !info->symbolic
2470 || !h->def_regular))
2471 {
2472 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2473 outrel.r_addend = rel->r_addend;
2474 }
2475 else
2476 {
2477 long indx;
2478
2479 outrel.r_addend = relocation + rel->r_addend;
2480
2481 if (bfd_is_abs_section (sec))
2482 indx = 0;
2483 else if (sec == NULL || sec->owner == NULL)
2484 {
2485 bfd_set_error (bfd_error_bad_value);
2486 return FALSE;
2487 }
2488 else
2489 {
2490 asection *osec;
2491
2492 osec = sec->output_section;
2493 indx = elf_section_data (osec)->dynindx;
2494 outrel.r_addend -= osec->vma;
2495 BFD_ASSERT (indx != 0);
2496 }
2497
2498 outrel.r_info = ELF32_R_INFO (indx, r_type);
2499 }
2500
2501 elf32_tic6x_install_rela (output_bfd, sreloc, &outrel);
2502
2503 /* If this reloc is against an external symbol, we do not want to
2504 fiddle with the addend. Otherwise, we need to include the symbol
2505 value so that it becomes an addend for the dynamic reloc. */
2506 if (! relocate)
2507 continue;
2508 }
2509
2510 /* Generic logic OK. */
2511 break;
2512
2513 case R_C6000_SBR_U15_B:
2514 case R_C6000_SBR_U15_H:
2515 case R_C6000_SBR_U15_W:
2516 case R_C6000_SBR_S16:
2517 case R_C6000_SBR_L16_B:
2518 case R_C6000_SBR_L16_H:
2519 case R_C6000_SBR_L16_W:
2520 case R_C6000_SBR_H16_B:
2521 case R_C6000_SBR_H16_H:
2522 case R_C6000_SBR_H16_W:
2523 sbh = bfd_link_hash_lookup (info->hash, "__c6xabi_DSBT_BASE",
2524 FALSE, FALSE, TRUE);
2525 if (sbh != NULL
2526 && (sbh->type == bfd_link_hash_defined
2527 || sbh->type == bfd_link_hash_defweak))
2528 {
2529 if (h ? (h->root.type == bfd_link_hash_undefweak
2530 && (htab->elf.splt == NULL
2531 || h->plt.offset == (bfd_vma) -1))
2532 : r_symndx != STN_UNDEF && bfd_is_und_section (sec))
2533 relocation = 0;
2534 else
2535 relocation -= (sbh->u.def.value
2536 + sbh->u.def.section->output_section->vma
2537 + sbh->u.def.section->output_offset);
2538 }
2539 else
2540 {
2541 (*_bfd_error_handler) (_("%B: SB-relative relocation but "
2542 "__c6xabi_DSBT_BASE not defined"),
2543 input_bfd);
2544 ok = FALSE;
2545 continue;
2546 }
2547 break;
2548
2549 case R_C6000_SBR_GOT_U15_W:
2550 case R_C6000_SBR_GOT_L16_W:
2551 case R_C6000_SBR_GOT_H16_W:
2552 case R_C6000_EHTYPE:
2553 /* Relocation is to the entry for this symbol in the global
2554 offset table. */
2555 if (htab->elf.sgot == NULL)
2556 abort ();
2557
2558 if (h != NULL)
2559 {
2560 bfd_boolean dyn;
2561
2562 off = h->got.offset;
2563 dyn = htab->elf.dynamic_sections_created;
2564 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2565 || (info->shared
2566 && SYMBOL_REFERENCES_LOCAL (info, h))
2567 || (ELF_ST_VISIBILITY (h->other)
2568 && h->root.type == bfd_link_hash_undefweak))
2569 {
2570 /* This is actually a static link, or it is a
2571 -Bsymbolic link and the symbol is defined
2572 locally, or the symbol was forced to be local
2573 because of a version file. We must initialize
2574 this entry in the global offset table. Since the
2575 offset must always be a multiple of 4, we use the
2576 least significant bit to record whether we have
2577 initialized it already.
2578
2579 When doing a dynamic link, we create a .rel.got
2580 relocation entry to initialize the value. This
2581 is done in the finish_dynamic_symbol routine. */
2582 if ((off & 1) != 0)
2583 off &= ~1;
2584 else
2585 {
2586 bfd_put_32 (output_bfd, relocation,
2587 htab->elf.sgot->contents + off);
2588 h->got.offset |= 1;
2589
2590 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
2591 h)
2592 && !(ELF_ST_VISIBILITY (h->other)
2593 && h->root.type == bfd_link_hash_undefweak))
2594 elf32_tic6x_make_got_dynreloc (output_bfd, htab, sec,
2595 off);
2596 }
2597 }
2598 else
2599 unresolved_reloc = FALSE;
2600 }
2601 else
2602 {
2603 if (local_got_offsets == NULL)
2604 abort ();
2605
2606 off = local_got_offsets[r_symndx];
2607
2608 /* The offset must always be a multiple of 4. We use
2609 the least significant bit to record whether we have
2610 already generated the necessary reloc. */
2611 if ((off & 1) != 0)
2612 off &= ~1;
2613 else
2614 {
2615 bfd_put_32 (output_bfd, relocation,
2616 htab->elf.sgot->contents + off);
2617
2618 if (info->shared || elf32_tic6x_using_dsbt (output_bfd))
2619 elf32_tic6x_make_got_dynreloc (output_bfd, htab, sec, off);
2620
2621 local_got_offsets[r_symndx] |= 1;
2622 }
2623 }
2624
2625 if (off >= (bfd_vma) -2)
2626 abort ();
2627
2628 if (htab->dsbt)
2629 relocation = (htab->elf.sgot->output_section->vma
2630 + htab->elf.sgot->output_offset + off
2631 - htab->dsbt->output_section->vma
2632 - htab->dsbt->output_offset);
2633 else
2634 relocation = (htab->elf.sgot->output_section->vma
2635 + htab->elf.sgot->output_offset + off
2636 - htab->elf.sgotplt->output_section->vma
2637 - htab->elf.sgotplt->output_offset);
2638
2639 if (rel->r_addend != 0)
2640 {
2641 /* We can't do anything for a relocation which is against
2642 a symbol *plus offset*. GOT holds relocations for
2643 symbols. Make this an error; the compiler isn't
2644 allowed to pass us these kinds of things. */
2645 if (h == NULL)
2646 (*_bfd_error_handler)
2647 (_("%B, section %A: relocation %s with non-zero addend %d"
2648 " against local symbol"),
2649 input_bfd,
2650 input_section,
2651 elf32_tic6x_howto_table[r_type].name,
2652 rel->r_addend);
2653 else
2654 (*_bfd_error_handler)
2655 (_("%B, section %A: relocation %s with non-zero addend %d"
2656 " against symbol `%s'"),
2657 input_bfd,
2658 input_section,
2659 elf32_tic6x_howto_table[r_type].name,
2660 rel->r_addend,
2661 h->root.root.string[0] != '\0' ? h->root.root.string
2662 : _("[whose name is lost]"));
2663
2664 bfd_set_error (bfd_error_bad_value);
2665 return FALSE;
2666 }
2667 break;
2668
2669 case R_C6000_PREL31:
2670 if (h != NULL
2671 && h->plt.offset != (bfd_vma) -1
2672 && htab->elf.splt != NULL)
2673 {
2674 relocation = (htab->elf.splt->output_section->vma
2675 + htab->elf.splt->output_offset
2676 + h->plt.offset);
2677 }
2678 break;
2679
2680 case R_C6000_COPY:
2681 /* Invalid in relocatable object. */
2682 default:
2683 /* Unknown relocation. */
2684 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2685 input_bfd, r_type);
2686 ok = FALSE;
2687 continue;
2688 }
2689
2690 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
2691 contents, rel->r_offset,
2692 relocation, rel->r_addend);
2693
2694 done_reloc:
2695 if (r == bfd_reloc_ok
2696 && howto->complain_on_overflow == complain_overflow_bitfield)
2697 {
2698 /* Generic overflow handling accepts cases the ABI says
2699 should be rejected for R_C6000_ABS16 and
2700 R_C6000_ABS8. */
2701 bfd_vma value = (relocation + rel->r_addend) & 0xffffffff;
2702 bfd_vma sbit = 1 << (howto->bitsize - 1);
2703 bfd_vma sbits = (-(bfd_vma) sbit) & 0xffffffff;
2704 bfd_vma value_sbits = value & sbits;
2705
2706 if (value_sbits != 0
2707 && value_sbits != sbit
2708 && value_sbits != sbits)
2709 r = bfd_reloc_overflow;
2710 }
2711
2712 if (r != bfd_reloc_ok)
2713 {
2714 const char *name;
2715 const char *error_message;
2716
2717 if (h != NULL)
2718 name = h->root.root.string;
2719 else
2720 {
2721 name = bfd_elf_string_from_elf_section (input_bfd,
2722 symtab_hdr->sh_link,
2723 sym->st_name);
2724 if (name == NULL)
2725 return FALSE;
2726 if (*name == '\0')
2727 name = bfd_section_name (input_bfd, sec);
2728 }
2729
2730 switch (r)
2731 {
2732 case bfd_reloc_overflow:
2733 /* If the overflowing reloc was to an undefined symbol,
2734 we have already printed one error message and there
2735 is no point complaining again. */
2736 if ((! h ||
2737 h->root.type != bfd_link_hash_undefined)
2738 && (!((*info->callbacks->reloc_overflow)
2739 (info, (h ? &h->root : NULL), name, howto->name,
2740 (bfd_vma) 0, input_bfd, input_section,
2741 rel->r_offset))))
2742 return FALSE;
2743 break;
2744
2745 case bfd_reloc_undefined:
2746 if (!((*info->callbacks->undefined_symbol)
2747 (info, name, input_bfd, input_section,
2748 rel->r_offset, TRUE)))
2749 return FALSE;
2750 break;
2751
2752 case bfd_reloc_outofrange:
2753 error_message = _("out of range");
2754 goto common_error;
2755
2756 case bfd_reloc_notsupported:
2757 error_message = _("unsupported relocation");
2758 goto common_error;
2759
2760 case bfd_reloc_dangerous:
2761 error_message = _("dangerous relocation");
2762 goto common_error;
2763
2764 default:
2765 error_message = _("unknown error");
2766 /* Fall through. */
2767
2768 common_error:
2769 BFD_ASSERT (error_message != NULL);
2770 if (!((*info->callbacks->reloc_dangerous)
2771 (info, error_message, input_bfd, input_section,
2772 rel->r_offset)))
2773 return FALSE;
2774 break;
2775 }
2776 }
2777 }
2778
2779 return ok;
2780 }
2781
2782 \f
2783 /* Look through the relocs for a section during the first phase, and
2784 calculate needed space in the global offset table, procedure linkage
2785 table, and dynamic reloc sections. */
2786
2787 static bfd_boolean
2788 elf32_tic6x_check_relocs (bfd *abfd, struct bfd_link_info *info,
2789 asection *sec, const Elf_Internal_Rela *relocs)
2790 {
2791 struct elf32_tic6x_link_hash_table *htab;
2792 Elf_Internal_Shdr *symtab_hdr;
2793 struct elf_link_hash_entry **sym_hashes;
2794 const Elf_Internal_Rela *rel;
2795 const Elf_Internal_Rela *rel_end;
2796 asection *sreloc;
2797
2798 if (info->relocatable)
2799 return TRUE;
2800
2801 htab = elf32_tic6x_hash_table (info);
2802 symtab_hdr = &elf_symtab_hdr (abfd);
2803 sym_hashes = elf_sym_hashes (abfd);
2804
2805 /* Create dynamic sections for relocatable executables so that we can
2806 copy relocations. */
2807 if ((info->shared || elf32_tic6x_using_dsbt (abfd))
2808 && ! htab->elf.dynamic_sections_created)
2809 {
2810 if (! _bfd_elf_link_create_dynamic_sections (abfd, info))
2811 return FALSE;
2812 }
2813
2814 sreloc = NULL;
2815
2816 rel_end = relocs + sec->reloc_count;
2817 for (rel = relocs; rel < rel_end; rel++)
2818 {
2819 unsigned int r_type;
2820 unsigned long r_symndx;
2821 struct elf_link_hash_entry *h;
2822 Elf_Internal_Sym *isym;
2823
2824 r_symndx = ELF32_R_SYM (rel->r_info);
2825 r_type = ELF32_R_TYPE (rel->r_info);
2826
2827 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
2828 {
2829 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
2830 abfd,
2831 r_symndx);
2832 return FALSE;
2833 }
2834
2835 if (r_symndx < symtab_hdr->sh_info)
2836 {
2837 /* A local symbol. */
2838 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2839 abfd, r_symndx);
2840 if (isym == NULL)
2841 return FALSE;
2842 h = NULL;
2843 }
2844 else
2845 {
2846 isym = NULL;
2847 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2848 while (h->root.type == bfd_link_hash_indirect
2849 || h->root.type == bfd_link_hash_warning)
2850 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2851 }
2852
2853 switch (r_type)
2854 {
2855 case R_C6000_PCR_S21:
2856 case R_C6000_PREL31:
2857 /* This symbol requires a procedure linkage table entry. We
2858 actually build the entry in adjust_dynamic_symbol,
2859 because this might be a case of linking PIC code which is
2860 never referenced by a dynamic object, in which case we
2861 don't need to generate a procedure linkage table entry
2862 after all. */
2863
2864 /* If this is a local symbol, we resolve it directly without
2865 creating a procedure linkage table entry. */
2866 if (h == NULL)
2867 continue;
2868
2869 h->needs_plt = 1;
2870 h->plt.refcount += 1;
2871 break;
2872
2873 case R_C6000_SBR_GOT_U15_W:
2874 case R_C6000_SBR_GOT_L16_W:
2875 case R_C6000_SBR_GOT_H16_W:
2876 case R_C6000_EHTYPE:
2877 /* This symbol requires a global offset table entry. */
2878 if (h != NULL)
2879 {
2880 h->got.refcount += 1;
2881 }
2882 else
2883 {
2884 bfd_signed_vma *local_got_refcounts;
2885
2886 /* This is a global offset table entry for a local symbol. */
2887 local_got_refcounts = elf_local_got_refcounts (abfd);
2888 if (local_got_refcounts == NULL)
2889 {
2890 bfd_size_type size;
2891
2892 size = symtab_hdr->sh_info;
2893 size *= (sizeof (bfd_signed_vma)
2894 + sizeof (bfd_vma) + sizeof(char));
2895 local_got_refcounts = bfd_zalloc (abfd, size);
2896 if (local_got_refcounts == NULL)
2897 return FALSE;
2898 elf_local_got_refcounts (abfd) = local_got_refcounts;
2899 }
2900 local_got_refcounts[r_symndx] += 1;
2901 }
2902
2903 if (htab->elf.sgot == NULL)
2904 {
2905 if (htab->elf.dynobj == NULL)
2906 htab->elf.dynobj = abfd;
2907 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
2908 return FALSE;
2909 }
2910 break;
2911
2912 case R_C6000_DSBT_INDEX:
2913 /* We'd like to check for nonzero dsbt_index here, but it's
2914 set up only after check_relocs is called. Instead, we
2915 store the number of R_C6000_DSBT_INDEX relocs in the
2916 pc_count field, and potentially discard the extra space
2917 in elf32_tic6x_allocate_dynrelocs. */
2918 if (!info->shared)
2919 break;
2920
2921 /* fall through */
2922 case R_C6000_ABS32:
2923 case R_C6000_ABS16:
2924 case R_C6000_ABS8:
2925 case R_C6000_ABS_S16:
2926 case R_C6000_ABS_L16:
2927 case R_C6000_ABS_H16:
2928 /* If we are creating a shared library, and this is a reloc
2929 against a global symbol, or a non PC relative reloc
2930 against a local symbol, then we need to copy the reloc
2931 into the shared library. However, if we are linking with
2932 -Bsymbolic, we do not need to copy a reloc against a
2933 global symbol which is defined in an object we are
2934 including in the link (i.e., DEF_REGULAR is set). At
2935 this point we have not seen all the input files, so it is
2936 possible that DEF_REGULAR is not set now but will be set
2937 later (it is never cleared). In case of a weak definition,
2938 DEF_REGULAR may be cleared later by a strong definition in
2939 a shared library. We account for that possibility below by
2940 storing information in the relocs_copied field of the hash
2941 table entry. A similar situation occurs when creating
2942 shared libraries and symbol visibility changes render the
2943 symbol local.
2944
2945 If on the other hand, we are creating an executable, we
2946 may need to keep relocations for symbols satisfied by a
2947 dynamic library if we manage to avoid copy relocs for the
2948 symbol. */
2949 if ((info->shared || elf32_tic6x_using_dsbt (abfd))
2950 && (sec->flags & SEC_ALLOC) != 0)
2951 {
2952 struct elf_dyn_relocs *p;
2953 struct elf_dyn_relocs **head;
2954
2955 /* We must copy these reloc types into the output file.
2956 Create a reloc section in dynobj and make room for
2957 this reloc. */
2958 if (sreloc == NULL)
2959 {
2960 if (htab->elf.dynobj == NULL)
2961 htab->elf.dynobj = abfd;
2962
2963 sreloc = _bfd_elf_make_dynamic_reloc_section
2964 (sec, htab->elf.dynobj, 2, abfd, /*rela? */ TRUE);
2965
2966 if (sreloc == NULL)
2967 return FALSE;
2968 }
2969
2970 /* If this is a global symbol, we count the number of
2971 relocations we need for this symbol. */
2972 if (h != NULL)
2973 {
2974 head = &((struct elf32_tic6x_link_hash_entry *) h)->dyn_relocs;
2975 }
2976 else
2977 {
2978 /* Track dynamic relocs needed for local syms too.
2979 We really need local syms available to do this
2980 easily. Oh well. */
2981 void **vpp;
2982 asection *s;
2983
2984 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
2985 if (s == NULL)
2986 s = sec;
2987
2988 vpp = &elf_section_data (s)->local_dynrel;
2989 head = (struct elf_dyn_relocs **)vpp;
2990 }
2991
2992 p = *head;
2993 if (p == NULL || p->sec != sec)
2994 {
2995 bfd_size_type amt = sizeof *p;
2996 p = bfd_alloc (htab->elf.dynobj, amt);
2997 if (p == NULL)
2998 return FALSE;
2999 p->next = *head;
3000 *head = p;
3001 p->sec = sec;
3002 p->count = 0;
3003 p->pc_count = 0;
3004 }
3005
3006 p->count += 1;
3007 if (r_type == R_C6000_DSBT_INDEX)
3008 p->pc_count += 1;
3009 }
3010 break;
3011
3012 case R_C6000_SBR_U15_B:
3013 case R_C6000_SBR_U15_H:
3014 case R_C6000_SBR_U15_W:
3015 case R_C6000_SBR_S16:
3016 case R_C6000_SBR_L16_B:
3017 case R_C6000_SBR_L16_H:
3018 case R_C6000_SBR_L16_W:
3019 case R_C6000_SBR_H16_B:
3020 case R_C6000_SBR_H16_H:
3021 case R_C6000_SBR_H16_W:
3022 if (h != NULL && info->executable)
3023 {
3024 /* For B14-relative addresses, we might need a copy
3025 reloc. */
3026 h->non_got_ref = 1;
3027 }
3028 break;
3029
3030 default:
3031 break;
3032 }
3033 }
3034
3035 return TRUE;
3036 }
3037
3038 static bfd_boolean
3039 elf32_tic6x_add_symbol_hook (bfd *abfd,
3040 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3041 Elf_Internal_Sym *sym,
3042 const char **namep ATTRIBUTE_UNUSED,
3043 flagword *flagsp ATTRIBUTE_UNUSED,
3044 asection **secp,
3045 bfd_vma *valp)
3046 {
3047 switch (sym->st_shndx)
3048 {
3049 case SHN_TIC6X_SCOMMON:
3050 *secp = bfd_make_section_old_way (abfd, ".scommon");
3051 (*secp)->flags |= SEC_IS_COMMON;
3052 *valp = sym->st_size;
3053 bfd_set_section_alignment (abfd, *secp, bfd_log2 (sym->st_value));
3054 break;
3055 }
3056
3057 return TRUE;
3058 }
3059
3060 static void
3061 elf32_tic6x_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym)
3062 {
3063 elf_symbol_type *elfsym;
3064
3065 elfsym = (elf_symbol_type *) asym;
3066 switch (elfsym->internal_elf_sym.st_shndx)
3067 {
3068 case SHN_TIC6X_SCOMMON:
3069 if (tic6x_elf_scom_section.name == NULL)
3070 {
3071 /* Initialize the small common section. */
3072 tic6x_elf_scom_section.name = ".scommon";
3073 tic6x_elf_scom_section.flags = SEC_IS_COMMON;
3074 tic6x_elf_scom_section.output_section = &tic6x_elf_scom_section;
3075 tic6x_elf_scom_section.symbol = &tic6x_elf_scom_symbol;
3076 tic6x_elf_scom_section.symbol_ptr_ptr = &tic6x_elf_scom_symbol_ptr;
3077 tic6x_elf_scom_symbol.name = ".scommon";
3078 tic6x_elf_scom_symbol.flags = BSF_SECTION_SYM;
3079 tic6x_elf_scom_symbol.section = &tic6x_elf_scom_section;
3080 tic6x_elf_scom_symbol_ptr = &tic6x_elf_scom_symbol;
3081 }
3082 asym->section = &tic6x_elf_scom_section;
3083 asym->value = elfsym->internal_elf_sym.st_size;
3084 break;
3085 }
3086 }
3087
3088 static int
3089 elf32_tic6x_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED,
3090 const char *name ATTRIBUTE_UNUSED,
3091 Elf_Internal_Sym *sym,
3092 asection *input_sec,
3093 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED)
3094 {
3095 /* If we see a common symbol, which implies a relocatable link, then
3096 if a symbol was small common in an input file, mark it as small
3097 common in the output file. */
3098 if (sym->st_shndx == SHN_COMMON && strcmp (input_sec->name, ".scommon") == 0)
3099 sym->st_shndx = SHN_TIC6X_SCOMMON;
3100
3101 return 1;
3102 }
3103
3104 static bfd_boolean
3105 elf32_tic6x_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
3106 asection *sec,
3107 int *retval)
3108 {
3109 if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
3110 {
3111 *retval = SHN_TIC6X_SCOMMON;
3112 return TRUE;
3113 }
3114
3115 return FALSE;
3116 }
3117
3118 /* Allocate space in .plt, .got and associated reloc sections for
3119 dynamic relocs. */
3120
3121 static bfd_boolean
3122 elf32_tic6x_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
3123 {
3124 struct bfd_link_info *info;
3125 struct elf32_tic6x_link_hash_table *htab;
3126 struct elf32_tic6x_link_hash_entry *eh;
3127 struct elf_dyn_relocs *p;
3128
3129 if (h->root.type == bfd_link_hash_indirect)
3130 return TRUE;
3131
3132 eh = (struct elf32_tic6x_link_hash_entry *) h;
3133 info = (struct bfd_link_info *) inf;
3134 htab = elf32_tic6x_hash_table (info);
3135
3136 if (htab->elf.dynamic_sections_created && h->plt.refcount > 0)
3137 {
3138 /* Make sure this symbol is output as a dynamic symbol.
3139 Undefined weak syms won't yet be marked as dynamic. */
3140 if (h->dynindx == -1 && !h->forced_local)
3141 {
3142 if (! bfd_elf_link_record_dynamic_symbol (info, h))
3143 return FALSE;
3144 }
3145
3146 if (info->shared
3147 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
3148 {
3149 asection *s = htab->elf.splt;
3150
3151 /* If this is the first .plt entry, make room for the special
3152 first entry. */
3153 if (s->size == 0)
3154 s->size += PLT_ENTRY_SIZE;
3155
3156 h->plt.offset = s->size;
3157
3158 /* If this symbol is not defined in a regular file, and we are
3159 not generating a shared library, then set the symbol to this
3160 location in the .plt. This is required to make function
3161 pointers compare as equal between the normal executable and
3162 the shared library. */
3163 if (! info->shared && !h->def_regular)
3164 {
3165 h->root.u.def.section = s;
3166 h->root.u.def.value = h->plt.offset;
3167 }
3168
3169 /* Make room for this entry. */
3170 s->size += PLT_ENTRY_SIZE;
3171 /* We also need to make an entry in the .got.plt section, which
3172 will be placed in the .got section by the linker script. */
3173 htab->elf.sgotplt->size += 4;
3174 /* We also need to make an entry in the .rel.plt section. */
3175 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
3176 }
3177 else
3178 {
3179 h->plt.offset = (bfd_vma) -1;
3180 h->needs_plt = 0;
3181 }
3182 }
3183 else
3184 {
3185 h->plt.offset = (bfd_vma) -1;
3186 h->needs_plt = 0;
3187 }
3188
3189 if (h->got.refcount > 0)
3190 {
3191 asection *s;
3192
3193 /* Make sure this symbol is output as a dynamic symbol.
3194 Undefined weak syms won't yet be marked as dynamic. */
3195 if (h->dynindx == -1
3196 && !h->forced_local)
3197 {
3198 if (! bfd_elf_link_record_dynamic_symbol (info, h))
3199 return FALSE;
3200 }
3201
3202 s = htab->elf.sgot;
3203 h->got.offset = s->size;
3204 s->size += 4;
3205
3206 if (!(ELF_ST_VISIBILITY (h->other)
3207 && h->root.type == bfd_link_hash_undefweak))
3208 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
3209 }
3210 else
3211 h->got.offset = (bfd_vma) -1;
3212
3213 if (eh->dyn_relocs == NULL)
3214 return TRUE;
3215
3216 /* Discard relocs on undefined weak syms with non-default
3217 visibility. */
3218 if (info->shared || elf32_tic6x_using_dsbt (htab->obfd))
3219 {
3220 /* We use the pc_count field to hold the number of
3221 R_C6000_DSBT_INDEX relocs. */
3222 if (htab->params.dsbt_index != 0)
3223 {
3224 struct elf_dyn_relocs **pp;
3225
3226 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
3227 {
3228 p->count -= p->pc_count;
3229 p->pc_count = 0;
3230 if (p->count == 0)
3231 *pp = p->next;
3232 else
3233 pp = &p->next;
3234 }
3235 }
3236
3237 if (eh->dyn_relocs != NULL
3238 && h->root.type == bfd_link_hash_undefweak)
3239 {
3240 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3241 eh->dyn_relocs = NULL;
3242
3243 /* Make sure undefined weak symbols are output as a dynamic
3244 symbol in PIEs. */
3245 else if (h->dynindx == -1
3246 && !h->forced_local)
3247 {
3248 if (! bfd_elf_link_record_dynamic_symbol (info, h))
3249 return FALSE;
3250 }
3251 }
3252 }
3253
3254 /* Finally, allocate space. */
3255 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3256 {
3257 asection *sreloc;
3258
3259 sreloc = elf_section_data (p->sec)->sreloc;
3260
3261 BFD_ASSERT (sreloc != NULL);
3262 sreloc->size += p->count * sizeof (Elf32_External_Rela);
3263 }
3264
3265 return TRUE;
3266 }
3267
3268 /* Find any dynamic relocs that apply to read-only sections. */
3269
3270 static bfd_boolean
3271 elf32_tic6x_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
3272 {
3273 struct elf32_tic6x_link_hash_entry *eh;
3274 struct elf_dyn_relocs *p;
3275
3276 eh = (struct elf32_tic6x_link_hash_entry *) h;
3277 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3278 {
3279 asection *s = p->sec->output_section;
3280
3281 if (s != NULL && (s->flags & SEC_READONLY) != 0)
3282 {
3283 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3284
3285 info->flags |= DF_TEXTREL;
3286
3287 /* Not an error, just cut short the traversal. */
3288 return FALSE;
3289 }
3290 }
3291 return TRUE;
3292 }
3293
3294 /* Set the sizes of the dynamic sections. */
3295
3296 static bfd_boolean
3297 elf32_tic6x_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
3298 {
3299 struct elf32_tic6x_link_hash_table *htab;
3300 bfd *dynobj;
3301 asection *s;
3302 bfd_boolean relocs;
3303 bfd *ibfd;
3304
3305 htab = elf32_tic6x_hash_table (info);
3306 dynobj = htab->elf.dynobj;
3307 if (dynobj == NULL)
3308 abort ();
3309
3310 if (htab->elf.dynamic_sections_created)
3311 {
3312 /* Set the contents of the .interp section to the interpreter. */
3313 if (info->executable)
3314 {
3315 s = bfd_get_section_by_name (dynobj, ".interp");
3316 if (s == NULL)
3317 abort ();
3318 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3319 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3320 }
3321 }
3322
3323 /* Set up .got offsets for local syms, and space for local dynamic
3324 relocs. */
3325 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
3326 {
3327 bfd_signed_vma *local_got;
3328 bfd_signed_vma *end_local_got;
3329 char *local_tls_type;
3330 bfd_vma *local_tlsdesc_gotent;
3331 bfd_size_type locsymcount;
3332 Elf_Internal_Shdr *symtab_hdr;
3333 asection *srel;
3334
3335 for (s = ibfd->sections; s != NULL; s = s->next)
3336 {
3337 struct elf_dyn_relocs *p;
3338
3339 for (p = ((struct elf_dyn_relocs *)
3340 elf_section_data (s)->local_dynrel);
3341 p != NULL;
3342 p = p->next)
3343 {
3344 if (!bfd_is_abs_section (p->sec)
3345 && bfd_is_abs_section (p->sec->output_section))
3346 {
3347 /* Input section has been discarded, either because
3348 it is a copy of a linkonce section or due to
3349 linker script /DISCARD/, so we'll be discarding
3350 the relocs too. */
3351 }
3352 else if (p->count != 0)
3353 {
3354 srel = elf_section_data (p->sec)->sreloc;
3355 srel->size += p->count * sizeof (Elf32_External_Rela);
3356 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
3357 info->flags |= DF_TEXTREL;
3358 }
3359 }
3360 }
3361
3362 local_got = elf_local_got_refcounts (ibfd);
3363 if (!local_got)
3364 continue;
3365
3366 symtab_hdr = &elf_symtab_hdr (ibfd);
3367 locsymcount = symtab_hdr->sh_info;
3368 end_local_got = local_got + locsymcount;
3369 s = htab->elf.sgot;
3370 srel = htab->elf.srelgot;
3371 for (; local_got < end_local_got;
3372 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
3373 {
3374 if (*local_got > 0)
3375 {
3376 *local_got = s->size;
3377 s->size += 4;
3378
3379 if (info->shared || elf32_tic6x_using_dsbt (output_bfd))
3380 {
3381 srel->size += sizeof (Elf32_External_Rela);
3382 }
3383 }
3384 else
3385 *local_got = (bfd_vma) -1;
3386 }
3387 }
3388
3389 /* Allocate global sym .plt and .got entries, and space for global
3390 sym dynamic relocs. */
3391 elf_link_hash_traverse (&htab->elf, elf32_tic6x_allocate_dynrelocs, info);
3392
3393 /* We now have determined the sizes of the various dynamic sections.
3394 Allocate memory for them. */
3395 relocs = FALSE;
3396 for (s = dynobj->sections; s != NULL; s = s->next)
3397 {
3398 bfd_boolean strip_section = TRUE;
3399
3400 if ((s->flags & SEC_LINKER_CREATED) == 0)
3401 continue;
3402
3403 if (s == htab->dsbt)
3404 s->size = 4 * htab->params.dsbt_size;
3405 else if (s == htab->elf.splt
3406 || s == htab->elf.sgot
3407 || s == htab->elf.sgotplt
3408 || s == htab->sdynbss)
3409 {
3410 /* Strip this section if we don't need it; see the
3411 comment below. */
3412 /* We'd like to strip these sections if they aren't needed, but if
3413 we've exported dynamic symbols from them we must leave them.
3414 It's too late to tell BFD to get rid of the symbols. */
3415
3416 if (htab->elf.hplt != NULL)
3417 strip_section = FALSE;
3418
3419 /* Round up the size of the PLT section to a multiple of 32. */
3420 if (s == htab->elf.splt && s->size > 0)
3421 s->size = (s->size + 31) & ~(bfd_vma)31;
3422 }
3423 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
3424 {
3425 if (s->size != 0
3426 && s != htab->elf.srelplt)
3427 relocs = TRUE;
3428
3429 /* We use the reloc_count field as a counter if we need
3430 to copy relocs into the output file. */
3431 s->reloc_count = 0;
3432 }
3433 else
3434 {
3435 /* It's not one of our sections, so don't allocate space. */
3436 continue;
3437 }
3438
3439 if (s->size == 0)
3440 {
3441 /* If we don't need this section, strip it from the
3442 output file. This is mostly to handle .rel.bss and
3443 .rel.plt. We must create both sections in
3444 create_dynamic_sections, because they must be created
3445 before the linker maps input sections to output
3446 sections. The linker does that before
3447 adjust_dynamic_symbol is called, and it is that
3448 function which decides whether anything needs to go
3449 into these sections. */
3450 if (strip_section)
3451 s->flags |= SEC_EXCLUDE;
3452 continue;
3453 }
3454
3455 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3456 continue;
3457
3458 /* Allocate memory for the section contents. We use bfd_zalloc
3459 here in case unused entries are not reclaimed before the
3460 section's contents are written out. This should not happen,
3461 but this way if it does, we get a R_C6000_NONE reloc instead
3462 of garbage. */
3463 s->contents = bfd_zalloc (dynobj, s->size);
3464 if (s->contents == NULL)
3465 return FALSE;
3466 }
3467
3468 if (htab->elf.dynamic_sections_created)
3469 {
3470 /* Add some entries to the .dynamic section. We fill in the
3471 values later, in elf32_tic6x_finish_dynamic_sections, but we
3472 must add the entries now so that we get the correct size for
3473 the .dynamic section. The DT_DEBUG entry is filled in by the
3474 dynamic linker and used by the debugger. */
3475 #define add_dynamic_entry(TAG, VAL) \
3476 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3477
3478 if (info->executable)
3479 {
3480 if (!add_dynamic_entry (DT_DEBUG, 0))
3481 return FALSE;
3482 }
3483
3484 if (!add_dynamic_entry (DT_C6000_DSBT_BASE, 0)
3485 || !add_dynamic_entry (DT_C6000_DSBT_SIZE, htab->params.dsbt_size)
3486 || !add_dynamic_entry (DT_C6000_DSBT_INDEX,
3487 htab->params.dsbt_index))
3488 return FALSE;
3489
3490 if (htab->elf.splt->size != 0)
3491 {
3492 if (!add_dynamic_entry (DT_PLTGOT, 0)
3493 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3494 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3495 || !add_dynamic_entry (DT_JMPREL, 0))
3496 return FALSE;
3497 }
3498
3499 if (relocs)
3500 {
3501 if (!add_dynamic_entry (DT_RELA, 0)
3502 || !add_dynamic_entry (DT_RELASZ, 0)
3503 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3504 return FALSE;
3505
3506 /* If any dynamic relocs apply to a read-only section,
3507 then we need a DT_TEXTREL entry. */
3508 if ((info->flags & DF_TEXTREL) == 0)
3509 elf_link_hash_traverse (&htab->elf,
3510 elf32_tic6x_readonly_dynrelocs, info);
3511
3512 if ((info->flags & DF_TEXTREL) != 0)
3513 {
3514 if (!add_dynamic_entry (DT_TEXTREL, 0))
3515 return FALSE;
3516 }
3517 }
3518 }
3519 #undef add_dynamic_entry
3520
3521 return TRUE;
3522 }
3523
3524 /* This function is called after all the input files have been read,
3525 and the input sections have been assigned to output sections. */
3526
3527 static bfd_boolean
3528 elf32_tic6x_always_size_sections (bfd *output_bfd, struct bfd_link_info *info)
3529 {
3530 if (elf32_tic6x_using_dsbt (output_bfd) && !info->relocatable)
3531 {
3532 struct elf_link_hash_entry *h;
3533
3534 /* Force a PT_GNU_STACK segment to be created. */
3535 if (! elf_tdata (output_bfd)->stack_flags)
3536 elf_tdata (output_bfd)->stack_flags = PF_R | PF_W | PF_X;
3537
3538 /* Define __stacksize if it's not defined yet. */
3539 h = elf_link_hash_lookup (elf_hash_table (info), "__stacksize",
3540 FALSE, FALSE, FALSE);
3541 if (! h || h->root.type != bfd_link_hash_defined
3542 || h->type != STT_OBJECT
3543 || !h->def_regular)
3544 {
3545 struct bfd_link_hash_entry *bh = NULL;
3546
3547 if (!(_bfd_generic_link_add_one_symbol
3548 (info, output_bfd, "__stacksize",
3549 BSF_GLOBAL, bfd_abs_section_ptr, DEFAULT_STACK_SIZE,
3550 (const char *) NULL, FALSE,
3551 get_elf_backend_data (output_bfd)->collect, &bh)))
3552 return FALSE;
3553
3554 h = (struct elf_link_hash_entry *) bh;
3555 h->def_regular = 1;
3556 h->type = STT_OBJECT;
3557 }
3558 }
3559 return TRUE;
3560 }
3561
3562 static bfd_boolean
3563 elf32_tic6x_modify_program_headers (bfd *output_bfd,
3564 struct bfd_link_info *info)
3565 {
3566 struct elf_obj_tdata *tdata = elf_tdata (output_bfd);
3567 struct elf_segment_map *m;
3568 Elf_Internal_Phdr *p;
3569
3570 /* objcopy and strip preserve what's already there using
3571 elf32_tic6x_copy_private_bfd_data (). */
3572 if (! info)
3573 return TRUE;
3574
3575 for (p = tdata->phdr, m = tdata->segment_map; m != NULL; m = m->next, p++)
3576 if (m->p_type == PT_GNU_STACK)
3577 break;
3578
3579 if (m)
3580 {
3581 struct elf_link_hash_entry *h;
3582
3583 /* Obtain the pointer to the __stacksize symbol. */
3584 h = elf_link_hash_lookup (elf_hash_table (info), "__stacksize",
3585 FALSE, FALSE, FALSE);
3586 if (h)
3587 {
3588 while (h->root.type == bfd_link_hash_indirect
3589 || h->root.type == bfd_link_hash_warning)
3590 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3591 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
3592 }
3593
3594 /* Set the header p_memsz from the symbol value. We
3595 intentionally ignore the symbol section. */
3596 if (h && h->root.type == bfd_link_hash_defined)
3597 p->p_memsz = h->root.u.def.value;
3598 else
3599 p->p_memsz = DEFAULT_STACK_SIZE;
3600
3601 p->p_align = 8;
3602 }
3603
3604 return TRUE;
3605 }
3606
3607 static bfd_boolean
3608 elf32_tic6x_finish_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
3609 struct bfd_link_info *info)
3610 {
3611 struct elf32_tic6x_link_hash_table *htab;
3612 bfd *dynobj;
3613 asection *sdyn;
3614
3615 htab = elf32_tic6x_hash_table (info);
3616 dynobj = htab->elf.dynobj;
3617 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3618
3619 if (elf_hash_table (info)->dynamic_sections_created)
3620 {
3621 Elf32_External_Dyn * dyncon;
3622 Elf32_External_Dyn * dynconend;
3623
3624 BFD_ASSERT (sdyn != NULL);
3625
3626 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3627 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3628
3629 for (; dyncon < dynconend; dyncon++)
3630 {
3631 Elf_Internal_Dyn dyn;
3632 asection *s;
3633
3634 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3635
3636 switch (dyn.d_tag)
3637 {
3638 default:
3639 break;
3640
3641 case DT_C6000_DSBT_BASE:
3642 s = htab->dsbt;
3643 dyn.d_un.d_ptr = (s->output_section->vma + s->output_offset);
3644 break;
3645
3646 case DT_PLTGOT:
3647 s = htab->elf.sgotplt;
3648 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3649 break;
3650
3651 case DT_JMPREL:
3652 s = htab->elf.srelplt;
3653 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3654 break;
3655
3656 case DT_PLTRELSZ:
3657 s = htab->elf.srelplt;
3658 dyn.d_un.d_val = s->size;
3659 break;
3660 }
3661 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3662 }
3663
3664 /* Fill in the first entry in the procedure linkage table. */
3665 if (htab->elf.splt && htab->elf.splt->size > 0)
3666 {
3667 bfd_vma got_offs = (htab->elf.sgotplt->output_section->vma
3668 + htab->elf.sgotplt->output_offset
3669 - htab->dsbt->output_section->vma
3670 - htab->dsbt->output_offset) / 4;
3671
3672 /* ldw .D2T2 *+b14[$GOT(0)],b2 */
3673 bfd_put_32 (output_bfd, got_offs << 8 | 0x0100006e,
3674 htab->elf.splt->contents);
3675 /* ldw .D2T2 *+b14[$GOT(4)],b1 */
3676 bfd_put_32 (output_bfd, (got_offs + 1) << 8 | 0x0080006e,
3677 htab->elf.splt->contents + 4);
3678 /* nop 3 */
3679 bfd_put_32 (output_bfd, 0x00004000,
3680 htab->elf.splt->contents + 8);
3681 /* b .s2 b2 */
3682 bfd_put_32 (output_bfd, 0x00080362,
3683 htab->elf.splt->contents + 12);
3684 /* nop 5 */
3685 bfd_put_32 (output_bfd, 0x00008000,
3686 htab->elf.splt->contents + 16);
3687
3688 elf_section_data (htab->elf.splt->output_section)
3689 ->this_hdr.sh_entsize = PLT_ENTRY_SIZE;
3690 }
3691 }
3692
3693 return TRUE;
3694 }
3695
3696 /* Return address for Ith PLT stub in section PLT, for relocation REL
3697 or (bfd_vma) -1 if it should not be included. */
3698
3699 static bfd_vma
3700 elf32_tic6x_plt_sym_val (bfd_vma i, const asection *plt,
3701 const arelent *rel ATTRIBUTE_UNUSED)
3702 {
3703 return plt->vma + (i + 1) * PLT_ENTRY_SIZE;
3704 }
3705
3706 static int
3707 elf32_tic6x_obj_attrs_arg_type (int tag)
3708 {
3709 if (tag == Tag_ABI_compatibility)
3710 return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_STR_VAL;
3711 else if (tag & 1)
3712 return ATTR_TYPE_FLAG_STR_VAL;
3713 else
3714 return ATTR_TYPE_FLAG_INT_VAL;
3715 }
3716
3717 static int
3718 elf32_tic6x_obj_attrs_order (int num)
3719 {
3720 if (num == LEAST_KNOWN_OBJ_ATTRIBUTE)
3721 return Tag_ABI_conformance;
3722 if ((num - 1) < Tag_ABI_conformance)
3723 return num - 1;
3724 return num;
3725 }
3726
3727 static bfd_boolean
3728 elf32_tic6x_obj_attrs_handle_unknown (bfd *abfd, int tag)
3729 {
3730 if ((tag & 127) < 64)
3731 {
3732 _bfd_error_handler
3733 (_("%B: error: unknown mandatory EABI object attribute %d"),
3734 abfd, tag);
3735 bfd_set_error (bfd_error_bad_value);
3736 return FALSE;
3737 }
3738 else
3739 {
3740 _bfd_error_handler
3741 (_("%B: warning: unknown EABI object attribute %d"),
3742 abfd, tag);
3743 return TRUE;
3744 }
3745 }
3746
3747 /* Merge the Tag_ISA attribute values ARCH1 and ARCH2
3748 and return the merged value. At present, all merges succeed, so no
3749 return value for errors is defined. */
3750
3751 int
3752 elf32_tic6x_merge_arch_attributes (int arch1, int arch2)
3753 {
3754 int min_arch, max_arch;
3755
3756 min_arch = (arch1 < arch2 ? arch1 : arch2);
3757 max_arch = (arch1 > arch2 ? arch1 : arch2);
3758
3759 /* In most cases, the numerically greatest value is the correct
3760 merged value, but merging C64 and C67 results in C674X. */
3761 if ((min_arch == C6XABI_Tag_ISA_C67X
3762 || min_arch == C6XABI_Tag_ISA_C67XP)
3763 && (max_arch == C6XABI_Tag_ISA_C64X
3764 || max_arch == C6XABI_Tag_ISA_C64XP))
3765 return C6XABI_Tag_ISA_C674X;
3766
3767 return max_arch;
3768 }
3769
3770 /* Convert a Tag_ABI_array_object_alignment or
3771 Tag_ABI_array_object_align_expected tag value TAG to a
3772 corresponding alignment value; return the alignment, or -1 for an
3773 unknown tag value. */
3774
3775 static int
3776 elf32_tic6x_tag_to_array_alignment (int tag)
3777 {
3778 switch (tag)
3779 {
3780 case 0:
3781 return 8;
3782
3783 case 1:
3784 return 4;
3785
3786 case 2:
3787 return 16;
3788
3789 default:
3790 return -1;
3791 }
3792 }
3793
3794 /* Convert a Tag_ABI_array_object_alignment or
3795 Tag_ABI_array_object_align_expected alignment ALIGN to a
3796 corresponding tag value; return the tag value. */
3797
3798 static int
3799 elf32_tic6x_array_alignment_to_tag (int align)
3800 {
3801 switch (align)
3802 {
3803 case 8:
3804 return 0;
3805
3806 case 4:
3807 return 1;
3808
3809 case 16:
3810 return 2;
3811
3812 default:
3813 abort ();
3814 }
3815 }
3816
3817 /* Merge attributes from IBFD and OBFD, returning TRUE if the merge
3818 succeeded, FALSE otherwise. */
3819
3820 static bfd_boolean
3821 elf32_tic6x_merge_attributes (bfd *ibfd, bfd *obfd)
3822 {
3823 bfd_boolean result = TRUE;
3824 obj_attribute *in_attr;
3825 obj_attribute *out_attr;
3826 int i;
3827 int array_align_in, array_align_out, array_expect_in, array_expect_out;
3828
3829 if (!elf_known_obj_attributes_proc (obfd)[0].i)
3830 {
3831 /* This is the first object. Copy the attributes. */
3832 _bfd_elf_copy_obj_attributes (ibfd, obfd);
3833
3834 out_attr = elf_known_obj_attributes_proc (obfd);
3835
3836 /* Use the Tag_null value to indicate the attributes have been
3837 initialized. */
3838 out_attr[0].i = 1;
3839
3840 return TRUE;
3841 }
3842
3843 in_attr = elf_known_obj_attributes_proc (ibfd);
3844 out_attr = elf_known_obj_attributes_proc (obfd);
3845
3846 /* No specification yet for handling of unknown attributes, so just
3847 ignore them and handle known ones. */
3848
3849 if (out_attr[Tag_ABI_stack_align_preserved].i
3850 < in_attr[Tag_ABI_stack_align_needed].i)
3851 {
3852 _bfd_error_handler
3853 (_("error: %B requires more stack alignment than %B preserves"),
3854 ibfd, obfd);
3855 result = FALSE;
3856 }
3857 if (in_attr[Tag_ABI_stack_align_preserved].i
3858 < out_attr[Tag_ABI_stack_align_needed].i)
3859 {
3860 _bfd_error_handler
3861 (_("error: %B requires more stack alignment than %B preserves"),
3862 obfd, ibfd);
3863 result = FALSE;
3864 }
3865
3866 array_align_in = elf32_tic6x_tag_to_array_alignment
3867 (in_attr[Tag_ABI_array_object_alignment].i);
3868 if (array_align_in == -1)
3869 {
3870 _bfd_error_handler
3871 (_("error: unknown Tag_ABI_array_object_alignment value in %B"),
3872 ibfd);
3873 result = FALSE;
3874 }
3875 array_align_out = elf32_tic6x_tag_to_array_alignment
3876 (out_attr[Tag_ABI_array_object_alignment].i);
3877 if (array_align_out == -1)
3878 {
3879 _bfd_error_handler
3880 (_("error: unknown Tag_ABI_array_object_alignment value in %B"),
3881 obfd);
3882 result = FALSE;
3883 }
3884 array_expect_in = elf32_tic6x_tag_to_array_alignment
3885 (in_attr[Tag_ABI_array_object_align_expected].i);
3886 if (array_expect_in == -1)
3887 {
3888 _bfd_error_handler
3889 (_("error: unknown Tag_ABI_array_object_align_expected value in %B"),
3890 ibfd);
3891 result = FALSE;
3892 }
3893 array_expect_out = elf32_tic6x_tag_to_array_alignment
3894 (out_attr[Tag_ABI_array_object_align_expected].i);
3895 if (array_expect_out == -1)
3896 {
3897 _bfd_error_handler
3898 (_("error: unknown Tag_ABI_array_object_align_expected value in %B"),
3899 obfd);
3900 result = FALSE;
3901 }
3902
3903 if (array_align_out < array_expect_in)
3904 {
3905 _bfd_error_handler
3906 (_("error: %B requires more array alignment than %B preserves"),
3907 ibfd, obfd);
3908 result = FALSE;
3909 }
3910 if (array_align_in < array_expect_out)
3911 {
3912 _bfd_error_handler
3913 (_("error: %B requires more array alignment than %B preserves"),
3914 obfd, ibfd);
3915 result = FALSE;
3916 }
3917
3918 for (i = LEAST_KNOWN_OBJ_ATTRIBUTE; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++)
3919 {
3920 switch (i)
3921 {
3922 case Tag_ISA:
3923 out_attr[i].i = elf32_tic6x_merge_arch_attributes (in_attr[i].i,
3924 out_attr[i].i);
3925 break;
3926
3927 case Tag_ABI_wchar_t:
3928 if (out_attr[i].i == 0)
3929 out_attr[i].i = in_attr[i].i;
3930 if (out_attr[i].i != 0
3931 && in_attr[i].i != 0
3932 && out_attr[i].i != in_attr[i].i)
3933 {
3934 _bfd_error_handler
3935 (_("warning: %B and %B differ in wchar_t size"), obfd, ibfd);
3936 }
3937 break;
3938
3939 case Tag_ABI_stack_align_needed:
3940 if (out_attr[i].i < in_attr[i].i)
3941 out_attr[i].i = in_attr[i].i;
3942 break;
3943
3944 case Tag_ABI_stack_align_preserved:
3945 if (out_attr[i].i > in_attr[i].i)
3946 out_attr[i].i = in_attr[i].i;
3947 break;
3948
3949 case Tag_ABI_DSBT:
3950 if (out_attr[i].i != in_attr[i].i)
3951 {
3952 _bfd_error_handler
3953 (_("warning: %B and %B differ in whether code is "
3954 "compiled for DSBT"),
3955 obfd, ibfd);
3956 }
3957 break;
3958
3959 case Tag_ABI_PIC:
3960 case Tag_ABI_PID:
3961 if (out_attr[i].i > in_attr[i].i)
3962 out_attr[i].i = in_attr[i].i;
3963 break;
3964
3965 case Tag_ABI_array_object_alignment:
3966 if (array_align_out != -1
3967 && array_align_in != -1
3968 && array_align_out > array_align_in)
3969 out_attr[i].i
3970 = elf32_tic6x_array_alignment_to_tag (array_align_in);
3971 break;
3972
3973 case Tag_ABI_array_object_align_expected:
3974 if (array_expect_out != -1
3975 && array_expect_in != -1
3976 && array_expect_out < array_expect_in)
3977 out_attr[i].i
3978 = elf32_tic6x_array_alignment_to_tag (array_expect_in);
3979 break;
3980
3981 case Tag_ABI_conformance:
3982 /* Merging for this attribute is not specified. As on ARM,
3983 treat a missing attribute as no claim to conform and only
3984 merge identical values. */
3985 if (out_attr[i].s == NULL
3986 || in_attr[i].s == NULL
3987 || strcmp (out_attr[i].s,
3988 in_attr[i].s) != 0)
3989 out_attr[i].s = NULL;
3990 break;
3991
3992 case Tag_ABI_compatibility:
3993 /* Merged in _bfd_elf_merge_object_attributes. */
3994 break;
3995
3996 default:
3997 result
3998 = result && _bfd_elf_merge_unknown_attribute_low (ibfd, obfd, i);
3999 break;
4000 }
4001
4002 if (in_attr[i].type && !out_attr[i].type)
4003 out_attr[i].type = in_attr[i].type;
4004 }
4005
4006 /* Merge Tag_ABI_compatibility attributes and any common GNU ones. */
4007 if (!_bfd_elf_merge_object_attributes (ibfd, obfd))
4008 return FALSE;
4009
4010 result &= _bfd_elf_merge_unknown_attribute_list (ibfd, obfd);
4011
4012 return result;
4013 }
4014
4015 static bfd_boolean
4016 elf32_tic6x_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4017 {
4018 if (!_bfd_generic_verify_endian_match (ibfd, obfd))
4019 return FALSE;
4020
4021 if (!elf32_tic6x_merge_attributes (ibfd, obfd))
4022 return FALSE;
4023
4024 return TRUE;
4025 }
4026
4027 static bfd_boolean
4028 elf32_tic6x_copy_private_data (bfd * ibfd, bfd * obfd)
4029 {
4030 _bfd_elf_copy_private_bfd_data (ibfd, obfd);
4031
4032 if (! is_tic6x_elf (ibfd) || ! is_tic6x_elf (obfd))
4033 return TRUE;
4034
4035 /* Copy the stack size. */
4036 if (elf_tdata (ibfd)->phdr && elf_tdata (obfd)->phdr
4037 && elf32_tic6x_using_dsbt (ibfd) && elf32_tic6x_using_dsbt (obfd))
4038 {
4039 unsigned i;
4040
4041 for (i = 0; i < elf_elfheader (ibfd)->e_phnum; i++)
4042 if (elf_tdata (ibfd)->phdr[i].p_type == PT_GNU_STACK)
4043 {
4044 Elf_Internal_Phdr *iphdr = &elf_tdata (ibfd)->phdr[i];
4045
4046 for (i = 0; i < elf_elfheader (obfd)->e_phnum; i++)
4047 if (elf_tdata (obfd)->phdr[i].p_type == PT_GNU_STACK)
4048 {
4049 memcpy (&elf_tdata (obfd)->phdr[i], iphdr, sizeof (*iphdr));
4050
4051 /* Rewrite the phdrs, since we're only called after they
4052 were first written. */
4053 if (bfd_seek (obfd,
4054 (bfd_signed_vma) get_elf_backend_data (obfd)
4055 ->s->sizeof_ehdr, SEEK_SET) != 0
4056 || get_elf_backend_data (obfd)->s
4057 ->write_out_phdrs (obfd, elf_tdata (obfd)->phdr,
4058 elf_elfheader (obfd)->e_phnum) != 0)
4059 return FALSE;
4060 break;
4061 }
4062
4063 break;
4064 }
4065 }
4066
4067 return TRUE;
4068 }
4069
4070 /* Add a new unwind edit to the list described by HEAD, TAIL. If TINDEX is zero,
4071 adds the edit to the start of the list. (The list must be built in order of
4072 ascending TINDEX: the function's callers are primarily responsible for
4073 maintaining that condition). */
4074
4075 static void
4076 elf32_tic6x_add_unwind_table_edit (tic6x_unwind_table_edit **head,
4077 tic6x_unwind_table_edit **tail,
4078 tic6x_unwind_edit_type type,
4079 asection *linked_section,
4080 unsigned int tindex)
4081 {
4082 tic6x_unwind_table_edit *new_edit = (tic6x_unwind_table_edit *)
4083 xmalloc (sizeof (tic6x_unwind_table_edit));
4084
4085 new_edit->type = type;
4086 new_edit->linked_section = linked_section;
4087 new_edit->index = tindex;
4088
4089 if (tindex > 0)
4090 {
4091 new_edit->next = NULL;
4092
4093 if (*tail)
4094 (*tail)->next = new_edit;
4095
4096 (*tail) = new_edit;
4097
4098 if (!*head)
4099 (*head) = new_edit;
4100 }
4101 else
4102 {
4103 new_edit->next = *head;
4104
4105 if (!*tail)
4106 *tail = new_edit;
4107
4108 *head = new_edit;
4109 }
4110 }
4111
4112 static _tic6x_elf_section_data *
4113 get_tic6x_elf_section_data (asection * sec)
4114 {
4115 if (sec && sec->owner && is_tic6x_elf (sec->owner))
4116 return elf32_tic6x_section_data (sec);
4117 else
4118 return NULL;
4119 }
4120
4121
4122 /* Increase the size of EXIDX_SEC by ADJUST bytes. ADJUST must be negative. */
4123 static void
4124 elf32_tic6x_adjust_exidx_size (asection *exidx_sec, int adjust)
4125 {
4126 asection *out_sec;
4127
4128 if (!exidx_sec->rawsize)
4129 exidx_sec->rawsize = exidx_sec->size;
4130
4131 bfd_set_section_size (exidx_sec->owner, exidx_sec, exidx_sec->size + adjust);
4132 out_sec = exidx_sec->output_section;
4133 /* Adjust size of output section. */
4134 bfd_set_section_size (out_sec->owner, out_sec, out_sec->size +adjust);
4135 }
4136
4137 /* Insert an EXIDX_CANTUNWIND marker at the end of a section. */
4138 static void
4139 elf32_tic6x_insert_cantunwind_after (asection *text_sec, asection *exidx_sec)
4140 {
4141 struct _tic6x_elf_section_data *exidx_data;
4142
4143 exidx_data = get_tic6x_elf_section_data (exidx_sec);
4144 elf32_tic6x_add_unwind_table_edit (
4145 &exidx_data->u.exidx.unwind_edit_list,
4146 &exidx_data->u.exidx.unwind_edit_tail,
4147 INSERT_EXIDX_CANTUNWIND_AT_END, text_sec, UINT_MAX);
4148
4149 elf32_tic6x_adjust_exidx_size (exidx_sec, 8);
4150 }
4151
4152 /* Scan .cx6abi.exidx tables, and create a list describing edits which
4153 should be made to those tables, such that:
4154
4155 1. Regions without unwind data are marked with EXIDX_CANTUNWIND entries.
4156 2. Duplicate entries are merged together (EXIDX_CANTUNWIND, or unwind
4157 codes which have been inlined into the index).
4158
4159 If MERGE_EXIDX_ENTRIES is false, duplicate entries are not merged.
4160
4161 The edits are applied when the tables are written
4162 (in elf32_tic6x_write_section).
4163 */
4164
4165 bfd_boolean
4166 elf32_tic6x_fix_exidx_coverage (asection **text_section_order,
4167 unsigned int num_text_sections,
4168 struct bfd_link_info *info,
4169 bfd_boolean merge_exidx_entries)
4170 {
4171 bfd *inp;
4172 unsigned int last_second_word = 0, i;
4173 asection *last_exidx_sec = NULL;
4174 asection *last_text_sec = NULL;
4175 int last_unwind_type = -1;
4176
4177 /* Walk over all EXIDX sections, and create backlinks from the corrsponding
4178 text sections. */
4179 for (inp = info->input_bfds; inp != NULL; inp = inp->link_next)
4180 {
4181 asection *sec;
4182
4183 for (sec = inp->sections; sec != NULL; sec = sec->next)
4184 {
4185 struct bfd_elf_section_data *elf_sec = elf_section_data (sec);
4186 Elf_Internal_Shdr *hdr = &elf_sec->this_hdr;
4187
4188 if (!hdr || hdr->sh_type != SHT_C6000_UNWIND)
4189 continue;
4190
4191 if (elf_sec->linked_to)
4192 {
4193 Elf_Internal_Shdr *linked_hdr
4194 = &elf_section_data (elf_sec->linked_to)->this_hdr;
4195 struct _tic6x_elf_section_data *linked_sec_tic6x_data
4196 = get_tic6x_elf_section_data (linked_hdr->bfd_section);
4197
4198 if (linked_sec_tic6x_data == NULL)
4199 continue;
4200
4201 /* Link this .c6xabi.exidx section back from the
4202 text section it describes. */
4203 linked_sec_tic6x_data->u.text.tic6x_exidx_sec = sec;
4204 }
4205 }
4206 }
4207
4208 /* Walk all text sections in order of increasing VMA. Eilminate duplicate
4209 index table entries (EXIDX_CANTUNWIND and inlined unwind opcodes),
4210 and add EXIDX_CANTUNWIND entries for sections with no unwind table data. */
4211
4212 for (i = 0; i < num_text_sections; i++)
4213 {
4214 asection *sec = text_section_order[i];
4215 asection *exidx_sec;
4216 struct _tic6x_elf_section_data *tic6x_data
4217 = get_tic6x_elf_section_data (sec);
4218 struct _tic6x_elf_section_data *exidx_data;
4219 bfd_byte *contents = NULL;
4220 int deleted_exidx_bytes = 0;
4221 bfd_vma j;
4222 tic6x_unwind_table_edit *unwind_edit_head = NULL;
4223 tic6x_unwind_table_edit *unwind_edit_tail = NULL;
4224 Elf_Internal_Shdr *hdr;
4225 bfd *ibfd;
4226
4227 if (tic6x_data == NULL)
4228 continue;
4229
4230 exidx_sec = tic6x_data->u.text.tic6x_exidx_sec;
4231 if (exidx_sec == NULL)
4232 {
4233 /* Section has no unwind data. */
4234 if (last_unwind_type == 0 || !last_exidx_sec)
4235 continue;
4236
4237 /* Ignore zero sized sections. */
4238 if (sec->size == 0)
4239 continue;
4240
4241 elf32_tic6x_insert_cantunwind_after (last_text_sec, last_exidx_sec);
4242 last_unwind_type = 0;
4243 continue;
4244 }
4245
4246 /* Skip /DISCARD/ sections. */
4247 if (bfd_is_abs_section (exidx_sec->output_section))
4248 continue;
4249
4250 hdr = &elf_section_data (exidx_sec)->this_hdr;
4251 if (hdr->sh_type != SHT_C6000_UNWIND)
4252 continue;
4253
4254 exidx_data = get_tic6x_elf_section_data (exidx_sec);
4255 if (exidx_data == NULL)
4256 continue;
4257
4258 ibfd = exidx_sec->owner;
4259
4260 if (hdr->contents != NULL)
4261 contents = hdr->contents;
4262 else if (! bfd_malloc_and_get_section (ibfd, exidx_sec, &contents))
4263 /* An error? */
4264 continue;
4265
4266 for (j = 0; j < hdr->sh_size; j += 8)
4267 {
4268 unsigned int second_word = bfd_get_32 (ibfd, contents + j + 4);
4269 int unwind_type;
4270 int elide = 0;
4271
4272 /* An EXIDX_CANTUNWIND entry. */
4273 if (second_word == 1)
4274 {
4275 if (last_unwind_type == 0)
4276 elide = 1;
4277 unwind_type = 0;
4278 }
4279 /* Inlined unwinding data. Merge if equal to previous. */
4280 else if ((second_word & 0x80000000) != 0)
4281 {
4282 if (merge_exidx_entries
4283 && last_second_word == second_word
4284 && last_unwind_type == 1)
4285 elide = 1;
4286 unwind_type = 1;
4287 last_second_word = second_word;
4288 }
4289 /* Normal table entry. In theory we could merge these too,
4290 but duplicate entries are likely to be much less common. */
4291 else
4292 unwind_type = 2;
4293
4294 if (elide)
4295 {
4296 elf32_tic6x_add_unwind_table_edit (&unwind_edit_head,
4297 &unwind_edit_tail, DELETE_EXIDX_ENTRY, NULL, j / 8);
4298
4299 deleted_exidx_bytes += 8;
4300 }
4301
4302 last_unwind_type = unwind_type;
4303 }
4304
4305 /* Free contents if we allocated it ourselves. */
4306 if (contents != hdr->contents)
4307 free (contents);
4308
4309 /* Record edits to be applied later (in elf32_tic6x_write_section). */
4310 exidx_data->u.exidx.unwind_edit_list = unwind_edit_head;
4311 exidx_data->u.exidx.unwind_edit_tail = unwind_edit_tail;
4312
4313 if (deleted_exidx_bytes > 0)
4314 elf32_tic6x_adjust_exidx_size (exidx_sec, -deleted_exidx_bytes);
4315
4316 last_exidx_sec = exidx_sec;
4317 last_text_sec = sec;
4318 }
4319
4320 /* Add terminating CANTUNWIND entry. */
4321 if (last_exidx_sec && last_unwind_type != 0)
4322 elf32_tic6x_insert_cantunwind_after (last_text_sec, last_exidx_sec);
4323
4324 return TRUE;
4325 }
4326
4327 /* Add ADDEND to lower 31 bits of VAL, leaving other bits unmodified. */
4328
4329 static unsigned long
4330 elf32_tic6x_add_low31 (unsigned long val, bfd_vma addend)
4331 {
4332 return (val & ~0x7ffffffful) | ((val + addend) & 0x7ffffffful);
4333 }
4334
4335 /* Copy an .c6xabi.exidx table entry, adding OFFSET to (applied) PREL31
4336 relocations. OFFSET is in bytes, and will be scaled before encoding. */
4337
4338
4339 static void
4340 elf32_tic6x_copy_exidx_entry (bfd *output_bfd, bfd_byte *to, bfd_byte *from,
4341 bfd_vma offset)
4342 {
4343 unsigned long first_word = bfd_get_32 (output_bfd, from);
4344 unsigned long second_word = bfd_get_32 (output_bfd, from + 4);
4345
4346 offset >>= 1;
4347 /* High bit of first word is supposed to be zero. */
4348 if ((first_word & 0x80000000ul) == 0)
4349 first_word = elf32_tic6x_add_low31 (first_word, offset);
4350
4351 /* If the high bit of the first word is clear, and the bit pattern is not 0x1
4352 (EXIDX_CANTUNWIND), this is an offset to an .c6xabi.extab entry. */
4353 if ((second_word != 0x1) && ((second_word & 0x80000000ul) == 0))
4354 second_word = elf32_tic6x_add_low31 (second_word, offset);
4355
4356 bfd_put_32 (output_bfd, first_word, to);
4357 bfd_put_32 (output_bfd, second_word, to + 4);
4358 }
4359
4360 /* Do the actual mangling of exception index tables. */
4361
4362 static bfd_boolean
4363 elf32_tic6x_write_section (bfd *output_bfd,
4364 struct bfd_link_info *link_info,
4365 asection *sec,
4366 bfd_byte *contents)
4367 {
4368 _tic6x_elf_section_data *tic6x_data;
4369 struct elf32_tic6x_link_hash_table *globals
4370 = elf32_tic6x_hash_table (link_info);
4371 bfd_vma offset = sec->output_section->vma + sec->output_offset;
4372
4373 if (globals == NULL)
4374 return FALSE;
4375
4376 /* If this section has not been allocated an _tic6x_elf_section_data
4377 structure then we cannot record anything. */
4378 tic6x_data = get_tic6x_elf_section_data (sec);
4379 if (tic6x_data == NULL)
4380 return FALSE;
4381
4382 if (tic6x_data->elf.this_hdr.sh_type != SHT_C6000_UNWIND)
4383 return FALSE;
4384
4385 tic6x_unwind_table_edit *edit_node
4386 = tic6x_data->u.exidx.unwind_edit_list;
4387 /* Now, sec->size is the size of the section we will write. The original
4388 size (before we merged duplicate entries and inserted EXIDX_CANTUNWIND
4389 markers) was sec->rawsize. (This isn't the case if we perform no
4390 edits, then rawsize will be zero and we should use size). */
4391 bfd_byte *edited_contents = (bfd_byte *) bfd_malloc (sec->size);
4392 unsigned int input_size = sec->rawsize ? sec->rawsize : sec->size;
4393 unsigned int in_index, out_index;
4394 bfd_vma add_to_offsets = 0;
4395
4396 for (in_index = 0, out_index = 0; in_index * 8 < input_size || edit_node;)
4397 {
4398 if (edit_node)
4399 {
4400 unsigned int edit_index = edit_node->index;
4401
4402 if (in_index < edit_index && in_index * 8 < input_size)
4403 {
4404 elf32_tic6x_copy_exidx_entry (output_bfd,
4405 edited_contents + out_index * 8,
4406 contents + in_index * 8, add_to_offsets);
4407 out_index++;
4408 in_index++;
4409 }
4410 else if (in_index == edit_index
4411 || (in_index * 8 >= input_size
4412 && edit_index == UINT_MAX))
4413 {
4414 switch (edit_node->type)
4415 {
4416 case DELETE_EXIDX_ENTRY:
4417 in_index++;
4418 add_to_offsets += 8;
4419 break;
4420
4421 case INSERT_EXIDX_CANTUNWIND_AT_END:
4422 {
4423 asection *text_sec = edit_node->linked_section;
4424 bfd_vma text_offset = text_sec->output_section->vma
4425 + text_sec->output_offset
4426 + text_sec->size;
4427 bfd_vma exidx_offset = offset + out_index * 8;
4428 unsigned long prel31_offset;
4429
4430 /* Note: this is meant to be equivalent to an
4431 R_C6000_PREL31 relocation. These synthetic
4432 EXIDX_CANTUNWIND markers are not relocated by the
4433 usual BFD method. */
4434 prel31_offset = ((text_offset - exidx_offset) >> 1)
4435 & 0x7ffffffful;
4436
4437 /* First address we can't unwind. */
4438 bfd_put_32 (output_bfd, prel31_offset,
4439 &edited_contents[out_index * 8]);
4440
4441 /* Code for EXIDX_CANTUNWIND. */
4442 bfd_put_32 (output_bfd, 0x1,
4443 &edited_contents[out_index * 8 + 4]);
4444
4445 out_index++;
4446 add_to_offsets -= 8;
4447 }
4448 break;
4449 }
4450
4451 edit_node = edit_node->next;
4452 }
4453 }
4454 else
4455 {
4456 /* No more edits, copy remaining entries verbatim. */
4457 elf32_tic6x_copy_exidx_entry (output_bfd,
4458 edited_contents + out_index * 8,
4459 contents + in_index * 8, add_to_offsets);
4460 out_index++;
4461 in_index++;
4462 }
4463 }
4464
4465 if (!(sec->flags & SEC_EXCLUDE) && !(sec->flags & SEC_NEVER_LOAD))
4466 bfd_set_section_contents (output_bfd, sec->output_section,
4467 edited_contents,
4468 (file_ptr) sec->output_offset, sec->size);
4469
4470 return TRUE;
4471 }
4472
4473 static void
4474 elf32_tic6x_set_osabi (bfd *abfd, struct bfd_link_info *link_info)
4475 {
4476 if (link_info != NULL && link_info->relocatable)
4477 return;
4478 _bfd_elf_set_osabi (abfd, link_info);
4479 }
4480
4481 #define TARGET_LITTLE_SYM bfd_elf32_tic6x_le_vec
4482 #define TARGET_LITTLE_NAME "elf32-tic6x-le"
4483 #define TARGET_BIG_SYM bfd_elf32_tic6x_be_vec
4484 #define TARGET_BIG_NAME "elf32-tic6x-be"
4485 #define ELF_ARCH bfd_arch_tic6x
4486 #define ELF_TARGET_ID TIC6X_ELF_DATA
4487 #define ELF_MACHINE_CODE EM_TI_C6000
4488 #define ELF_MAXPAGESIZE 0x1000
4489 #define bfd_elf32_bfd_reloc_type_lookup elf32_tic6x_reloc_type_lookup
4490 #define bfd_elf32_bfd_reloc_name_lookup elf32_tic6x_reloc_name_lookup
4491 #define bfd_elf32_bfd_copy_private_bfd_data elf32_tic6x_copy_private_data
4492 #define bfd_elf32_bfd_merge_private_bfd_data elf32_tic6x_merge_private_bfd_data
4493 #define bfd_elf32_mkobject elf32_tic6x_mkobject
4494 #define bfd_elf32_bfd_link_hash_table_create elf32_tic6x_link_hash_table_create
4495 #define bfd_elf32_bfd_link_hash_table_free elf32_tic6x_link_hash_table_free
4496 #define bfd_elf32_new_section_hook elf32_tic6x_new_section_hook
4497 #define elf_backend_can_gc_sections 1
4498 #define elf_backend_default_use_rela_p 1
4499 #define elf_backend_may_use_rel_p 1
4500 #define elf_backend_may_use_rela_p 1
4501 #define elf_backend_obj_attrs_arg_type elf32_tic6x_obj_attrs_arg_type
4502 #define elf_backend_obj_attrs_handle_unknown elf32_tic6x_obj_attrs_handle_unknown
4503 #define elf_backend_obj_attrs_order elf32_tic6x_obj_attrs_order
4504 #define elf_backend_obj_attrs_section ".c6xabi.attributes"
4505 #define elf_backend_obj_attrs_section_type SHT_C6000_ATTRIBUTES
4506 #define elf_backend_obj_attrs_vendor "c6xabi"
4507 #define elf_backend_can_refcount 1
4508 #define elf_backend_want_got_plt 1
4509 #define elf_backend_want_dynbss 1
4510 #define elf_backend_plt_readonly 1
4511 #define elf_backend_rela_normal 1
4512 #define elf_backend_got_header_size 8
4513 #define elf_backend_fake_sections elf32_tic6x_fake_sections
4514 #define elf_backend_gc_sweep_hook elf32_tic6x_gc_sweep_hook
4515 #define elf_backend_gc_mark_extra_sections elf32_tic6x_gc_mark_extra_sections
4516 #define elf_backend_modify_program_headers \
4517 elf32_tic6x_modify_program_headers
4518 #define elf_backend_create_dynamic_sections \
4519 elf32_tic6x_create_dynamic_sections
4520 #define elf_backend_adjust_dynamic_symbol \
4521 elf32_tic6x_adjust_dynamic_symbol
4522 #define elf_backend_check_relocs elf32_tic6x_check_relocs
4523 #define elf_backend_add_symbol_hook elf32_tic6x_add_symbol_hook
4524 #define elf_backend_symbol_processing elf32_tic6x_symbol_processing
4525 #define elf_backend_link_output_symbol_hook \
4526 elf32_tic6x_link_output_symbol_hook
4527 #define elf_backend_section_from_bfd_section \
4528 elf32_tic6x_section_from_bfd_section
4529 #define elf_backend_relocate_section elf32_tic6x_relocate_section
4530 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
4531 #define elf_backend_finish_dynamic_symbol \
4532 elf32_tic6x_finish_dynamic_symbol
4533 #define elf_backend_always_size_sections \
4534 elf32_tic6x_always_size_sections
4535 #define elf_backend_size_dynamic_sections \
4536 elf32_tic6x_size_dynamic_sections
4537 #define elf_backend_finish_dynamic_sections \
4538 elf32_tic6x_finish_dynamic_sections
4539 #define bfd_elf32_bfd_final_link \
4540 elf32_tic6x_final_link
4541 #define elf_backend_write_section elf32_tic6x_write_section
4542 #define elf_info_to_howto elf32_tic6x_info_to_howto
4543 #define elf_info_to_howto_rel elf32_tic6x_info_to_howto_rel
4544
4545 #undef elf_backend_omit_section_dynsym
4546 #define elf_backend_omit_section_dynsym elf32_tic6x_link_omit_section_dynsym
4547 #define elf_backend_plt_sym_val elf32_tic6x_plt_sym_val
4548
4549 #include "elf32-target.h"
4550
4551 #undef elf32_bed
4552 #define elf32_bed elf32_tic6x_linux_bed
4553
4554 #undef TARGET_LITTLE_SYM
4555 #define TARGET_LITTLE_SYM bfd_elf32_tic6x_linux_le_vec
4556 #undef TARGET_LITTLE_NAME
4557 #define TARGET_LITTLE_NAME "elf32-tic6x-linux-le"
4558 #undef TARGET_BIG_SYM
4559 #define TARGET_BIG_SYM bfd_elf32_tic6x_linux_be_vec
4560 #undef TARGET_BIG_NAME
4561 #define TARGET_BIG_NAME "elf32-tic6x-linux-be"
4562 #undef ELF_OSABI
4563 #define ELF_OSABI ELFOSABI_C6000_LINUX
4564
4565 #undef elf_backend_post_process_headers
4566 #define elf_backend_post_process_headers elf32_tic6x_set_osabi
4567
4568 #include "elf32-target.h"
4569
4570 #undef elf32_bed
4571 #define elf32_bed elf32_tic6x_elf_bed
4572
4573 #undef TARGET_LITTLE_SYM
4574 #define TARGET_LITTLE_SYM bfd_elf32_tic6x_elf_le_vec
4575 #undef TARGET_LITTLE_NAME
4576 #define TARGET_LITTLE_NAME "elf32-tic6x-elf-le"
4577 #undef TARGET_BIG_SYM
4578 #define TARGET_BIG_SYM bfd_elf32_tic6x_elf_be_vec
4579 #undef TARGET_BIG_NAME
4580 #define TARGET_BIG_NAME "elf32-tic6x-elf-be"
4581 #undef ELF_OSABI
4582 #define ELF_OSABI ELFOSABI_C6000_ELFABI
4583
4584 #undef elf_backend_post_process_headers
4585 #define elf_backend_post_process_headers elf32_tic6x_set_osabi
4586
4587 #include "elf32-target.h"
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