1 /* 32-bit ELF support for TI C6X
2 Copyright (C) 2010-2016 Free Software Foundation, Inc.
3 Contributed by Joseph Myers <joseph@codesourcery.com>
4 Bernd Schmidt <bernds@codesourcery.com>
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
27 #include "libiberty.h"
29 #include "elf/tic6x.h"
30 #include "elf32-tic6x.h"
32 #define ELF_DYNAMIC_INTERPRETER "/lib/ld-uClibc.so.0"
34 /* DSBT binaries have a default 128K stack. */
35 #define DEFAULT_STACK_SIZE 0x20000
37 /* The size in bytes of an entry in the procedure linkage table. */
38 #define PLT_ENTRY_SIZE 24
40 /* TI C6X ELF linker hash table. */
42 struct elf32_tic6x_link_hash_table
44 struct elf_link_hash_table elf
;
46 /* Short-cuts to get to dynamic linker sections. */
50 /* C6X specific command line arguments. */
51 struct elf32_tic6x_params params
;
53 /* Small local sym cache. */
54 struct sym_cache sym_cache
;
56 /* The output BFD, for convenience. */
59 /* The .dsbt section. */
63 /* Get the TI C6X ELF linker hash table from a link_info structure. */
65 #define elf32_tic6x_hash_table(p) \
66 ((struct elf32_tic6x_link_hash_table *) ((p)->hash))
68 /* TI C6X ELF linker hash entry. */
70 struct elf32_tic6x_link_hash_entry
72 struct elf_link_hash_entry elf
;
74 /* Track dynamic relocs copied for this symbol. */
75 struct elf_dyn_relocs
*dyn_relocs
;
81 INSERT_EXIDX_CANTUNWIND_AT_END
83 tic6x_unwind_edit_type
;
85 /* A (sorted) list of edits to apply to an unwind table. */
86 typedef struct tic6x_unwind_table_edit
88 tic6x_unwind_edit_type type
;
89 /* Note: we sometimes want to insert an unwind entry corresponding to a
90 section different from the one we're currently writing out, so record the
91 (text) section this edit relates to here. */
92 asection
*linked_section
;
94 struct tic6x_unwind_table_edit
*next
;
96 tic6x_unwind_table_edit
;
98 typedef struct _tic6x_elf_section_data
100 /* Information about mapping symbols. */
101 struct bfd_elf_section_data elf
;
102 /* Information about unwind tables. */
105 /* Unwind info attached to a text section. */
108 asection
*tic6x_exidx_sec
;
111 /* Unwind info attached to an .c6xabi.exidx section. */
114 tic6x_unwind_table_edit
*unwind_edit_list
;
115 tic6x_unwind_table_edit
*unwind_edit_tail
;
119 _tic6x_elf_section_data
;
121 #define elf32_tic6x_section_data(sec) \
122 ((_tic6x_elf_section_data *) elf_section_data (sec))
124 struct elf32_tic6x_obj_tdata
126 struct elf_obj_tdata root
;
128 /* Whether to use RELA relocations when generating relocations.
129 This is a per-object flag to allow the assembler to generate REL
130 relocations for use in linker testcases. */
131 bfd_boolean use_rela_p
;
134 #define elf32_tic6x_tdata(abfd) \
135 ((struct elf32_tic6x_obj_tdata *) (abfd)->tdata.any)
137 #define is_tic6x_elf(bfd) \
138 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
139 && elf_tdata (bfd) != NULL \
140 && elf_object_id (bfd) == TIC6X_ELF_DATA)
142 /* C6X ELF uses two common sections. One is the usual one, and the
143 other is for small objects. All the small objects are kept
144 together, and then referenced via the gp pointer, which yields
145 faster assembler code. This is what we use for the small common
146 section. This approach is copied from ecoff.c. */
147 static asection tic6x_elf_scom_section
;
148 static asymbol tic6x_elf_scom_symbol
;
149 static asymbol
*tic6x_elf_scom_symbol_ptr
;
151 static reloc_howto_type elf32_tic6x_howto_table
[] =
153 HOWTO (R_C6000_NONE
, /* type */
155 3, /* size (0 = byte, 1 = short, 2 = long) */
157 FALSE
, /* pc_relative */
159 complain_overflow_dont
,/* complain_on_overflow */
160 bfd_elf_generic_reloc
, /* special_function */
161 "R_C6000_NONE", /* name */
162 FALSE
, /* partial_inplace */
165 FALSE
), /* pcrel_offset */
166 HOWTO (R_C6000_ABS32
, /* type */
168 2, /* size (0 = byte, 1 = short, 2 = long) */
170 FALSE
, /* pc_relative */
172 complain_overflow_dont
,/* complain_on_overflow */
173 bfd_elf_generic_reloc
, /* special_function */
174 "R_C6000_ABS32", /* name */
175 FALSE
, /* partial_inplace */
177 0xffffffff, /* dst_mask */
178 FALSE
), /* pcrel_offset */
179 HOWTO (R_C6000_ABS16
, /* type */
181 1, /* size (0 = byte, 1 = short, 2 = long) */
183 FALSE
, /* pc_relative */
185 complain_overflow_bitfield
,/* complain_on_overflow */
186 bfd_elf_generic_reloc
, /* special_function */
187 "R_C6000_ABS16", /* name */
188 FALSE
, /* partial_inplace */
190 0x0000ffff, /* dst_mask */
191 FALSE
), /* pcrel_offset */
192 HOWTO (R_C6000_ABS8
, /* type */
194 0, /* size (0 = byte, 1 = short, 2 = long) */
196 FALSE
, /* pc_relative */
198 complain_overflow_bitfield
,/* complain_on_overflow */
199 bfd_elf_generic_reloc
, /* special_function */
200 "R_C6000_ABS8", /* name */
201 FALSE
, /* partial_inplace */
203 0x000000ff, /* dst_mask */
204 FALSE
), /* pcrel_offset */
205 HOWTO (R_C6000_PCR_S21
, /* type */
207 2, /* size (0 = byte, 1 = short, 2 = long) */
209 TRUE
, /* pc_relative */
211 complain_overflow_signed
,/* complain_on_overflow */
212 bfd_elf_generic_reloc
, /* special_function */
213 "R_C6000_PCR_S21", /* name */
214 FALSE
, /* partial_inplace */
216 0x0fffff80, /* dst_mask */
217 TRUE
), /* pcrel_offset */
218 HOWTO (R_C6000_PCR_S12
, /* type */
220 2, /* size (0 = byte, 1 = short, 2 = long) */
222 TRUE
, /* pc_relative */
224 complain_overflow_signed
,/* complain_on_overflow */
225 bfd_elf_generic_reloc
, /* special_function */
226 "R_C6000_PCR_S12", /* name */
227 FALSE
, /* partial_inplace */
229 0x0fff0000, /* dst_mask */
230 TRUE
), /* pcrel_offset */
231 HOWTO (R_C6000_PCR_S10
, /* type */
233 2, /* size (0 = byte, 1 = short, 2 = long) */
235 TRUE
, /* pc_relative */
237 complain_overflow_signed
,/* complain_on_overflow */
238 bfd_elf_generic_reloc
, /* special_function */
239 "R_C6000_PCR_S10", /* name */
240 FALSE
, /* partial_inplace */
242 0x007fe000, /* dst_mask */
243 TRUE
), /* pcrel_offset */
244 HOWTO (R_C6000_PCR_S7
, /* type */
246 2, /* size (0 = byte, 1 = short, 2 = long) */
248 TRUE
, /* pc_relative */
250 complain_overflow_signed
,/* complain_on_overflow */
251 bfd_elf_generic_reloc
, /* special_function */
252 "R_C6000_PCR_S7", /* name */
253 FALSE
, /* partial_inplace */
255 0x007f0000, /* dst_mask */
256 TRUE
), /* pcrel_offset */
257 HOWTO (R_C6000_ABS_S16
, /* type */
259 2, /* size (0 = byte, 1 = short, 2 = long) */
261 FALSE
, /* pc_relative */
263 complain_overflow_signed
,/* complain_on_overflow */
264 bfd_elf_generic_reloc
, /* special_function */
265 "R_C6000_ABS_S16", /* name */
266 FALSE
, /* partial_inplace */
268 0x007fff80, /* dst_mask */
269 FALSE
), /* pcrel_offset */
270 HOWTO (R_C6000_ABS_L16
, /* type */
272 2, /* size (0 = byte, 1 = short, 2 = long) */
274 FALSE
, /* pc_relative */
276 complain_overflow_dont
,/* complain_on_overflow */
277 bfd_elf_generic_reloc
, /* special_function */
278 "R_C6000_ABS_L16", /* name */
279 FALSE
, /* partial_inplace */
281 0x007fff80, /* dst_mask */
282 FALSE
), /* pcrel_offset */
283 HOWTO (R_C6000_ABS_H16
, /* type */
285 2, /* size (0 = byte, 1 = short, 2 = long) */
287 FALSE
, /* pc_relative */
289 complain_overflow_dont
,/* complain_on_overflow */
290 bfd_elf_generic_reloc
, /* special_function */
291 "R_C6000_ABS_H16", /* name */
292 FALSE
, /* partial_inplace */
294 0x007fff80, /* dst_mask */
295 FALSE
), /* pcrel_offset */
296 HOWTO (R_C6000_SBR_U15_B
, /* type */
298 2, /* size (0 = byte, 1 = short, 2 = long) */
300 FALSE
, /* pc_relative */
302 complain_overflow_unsigned
,/* complain_on_overflow */
303 bfd_elf_generic_reloc
, /* special_function */
304 "R_C6000_SBR_U15_B", /* name */
305 FALSE
, /* partial_inplace */
307 0x007fff00, /* dst_mask */
308 FALSE
), /* pcrel_offset */
309 HOWTO (R_C6000_SBR_U15_H
, /* type */
311 2, /* size (0 = byte, 1 = short, 2 = long) */
313 FALSE
, /* pc_relative */
315 complain_overflow_unsigned
,/* complain_on_overflow */
316 bfd_elf_generic_reloc
, /* special_function */
317 "R_C6000_SBR_U15_H", /* name */
318 FALSE
, /* partial_inplace */
320 0x007fff00, /* dst_mask */
321 FALSE
), /* pcrel_offset */
322 HOWTO (R_C6000_SBR_U15_W
, /* type */
324 2, /* size (0 = byte, 1 = short, 2 = long) */
326 FALSE
, /* pc_relative */
328 complain_overflow_unsigned
,/* complain_on_overflow */
329 bfd_elf_generic_reloc
, /* special_function */
330 "R_C6000_SBR_U15_W", /* name */
331 FALSE
, /* partial_inplace */
333 0x007fff00, /* dst_mask */
334 FALSE
), /* pcrel_offset */
335 HOWTO (R_C6000_SBR_S16
, /* type */
337 2, /* size (0 = byte, 1 = short, 2 = long) */
339 FALSE
, /* pc_relative */
341 complain_overflow_signed
,/* complain_on_overflow */
342 bfd_elf_generic_reloc
, /* special_function */
343 "R_C6000_SBR_S16", /* name */
344 FALSE
, /* partial_inplace */
346 0x007fff80, /* dst_mask */
347 FALSE
), /* pcrel_offset */
348 HOWTO (R_C6000_SBR_L16_B
, /* type */
350 2, /* size (0 = byte, 1 = short, 2 = long) */
352 FALSE
, /* pc_relative */
354 complain_overflow_dont
,/* complain_on_overflow */
355 bfd_elf_generic_reloc
, /* special_function */
356 "R_C6000_SBR_L16_B", /* name */
357 FALSE
, /* partial_inplace */
359 0x007fff80, /* dst_mask */
360 FALSE
), /* pcrel_offset */
361 HOWTO (R_C6000_SBR_L16_H
, /* type */
363 2, /* size (0 = byte, 1 = short, 2 = long) */
365 FALSE
, /* pc_relative */
367 complain_overflow_dont
,/* complain_on_overflow */
368 bfd_elf_generic_reloc
, /* special_function */
369 "R_C6000_SBR_L16_H", /* name */
370 FALSE
, /* partial_inplace */
372 0x007fff80, /* dst_mask */
373 FALSE
), /* pcrel_offset */
374 HOWTO (R_C6000_SBR_L16_W
, /* type */
376 2, /* size (0 = byte, 1 = short, 2 = long) */
378 FALSE
, /* pc_relative */
380 complain_overflow_dont
,/* complain_on_overflow */
381 bfd_elf_generic_reloc
, /* special_function */
382 "R_C6000_SBR_L16_W", /* name */
383 FALSE
, /* partial_inplace */
385 0x007fff80, /* dst_mask */
386 FALSE
), /* pcrel_offset */
387 HOWTO (R_C6000_SBR_H16_B
, /* type */
389 2, /* size (0 = byte, 1 = short, 2 = long) */
391 FALSE
, /* pc_relative */
393 complain_overflow_dont
,/* complain_on_overflow */
394 bfd_elf_generic_reloc
, /* special_function */
395 "R_C6000_SBR_H16_B", /* name */
396 FALSE
, /* partial_inplace */
398 0x007fff80, /* dst_mask */
399 FALSE
), /* pcrel_offset */
400 HOWTO (R_C6000_SBR_H16_H
, /* type */
402 2, /* size (0 = byte, 1 = short, 2 = long) */
404 FALSE
, /* pc_relative */
406 complain_overflow_dont
,/* complain_on_overflow */
407 bfd_elf_generic_reloc
, /* special_function */
408 "R_C6000_SBR_H16_H", /* name */
409 FALSE
, /* partial_inplace */
411 0x007fff80, /* dst_mask */
412 FALSE
), /* pcrel_offset */
413 HOWTO (R_C6000_SBR_H16_W
, /* type */
415 2, /* size (0 = byte, 1 = short, 2 = long) */
417 FALSE
, /* pc_relative */
419 complain_overflow_dont
,/* complain_on_overflow */
420 bfd_elf_generic_reloc
, /* special_function */
421 "R_C6000_SBR_H16_W", /* name */
422 FALSE
, /* partial_inplace */
424 0x007fff80, /* dst_mask */
425 FALSE
), /* pcrel_offset */
426 HOWTO (R_C6000_SBR_GOT_U15_W
, /* type */
428 2, /* size (0 = byte, 1 = short, 2 = long) */
430 FALSE
, /* pc_relative */
432 complain_overflow_unsigned
,/* complain_on_overflow */
433 bfd_elf_generic_reloc
, /* special_function */
434 "R_C6000_SBR_GOT_U15_W",/* name */
435 FALSE
, /* partial_inplace */
437 0x007fff00, /* dst_mask */
438 FALSE
), /* pcrel_offset */
439 HOWTO (R_C6000_SBR_GOT_L16_W
, /* type */
441 2, /* size (0 = byte, 1 = short, 2 = long) */
443 FALSE
, /* pc_relative */
445 complain_overflow_dont
,/* complain_on_overflow */
446 bfd_elf_generic_reloc
, /* special_function */
447 "R_C6000_SBR_GOT_L16_W",/* name */
448 FALSE
, /* partial_inplace */
450 0x007fff80, /* dst_mask */
451 FALSE
), /* pcrel_offset */
452 HOWTO (R_C6000_SBR_GOT_H16_W
, /* type */
454 2, /* size (0 = byte, 1 = short, 2 = long) */
456 FALSE
, /* pc_relative */
458 complain_overflow_dont
,/* complain_on_overflow */
459 bfd_elf_generic_reloc
, /* special_function */
460 "R_C6000_SBR_GOT_H16_W",/* name */
461 FALSE
, /* partial_inplace */
463 0x007fff80, /* dst_mask */
464 FALSE
), /* pcrel_offset */
465 HOWTO (R_C6000_DSBT_INDEX
, /* type */
467 2, /* size (0 = byte, 1 = short, 2 = long) */
469 FALSE
, /* pc_relative */
471 complain_overflow_unsigned
,/* complain_on_overflow */
472 bfd_elf_generic_reloc
, /* special_function */
473 "R_C6000_DSBT_INDEX", /* name */
474 FALSE
, /* partial_inplace */
476 0x007fff00, /* dst_mask */
477 FALSE
), /* pcrel_offset */
478 HOWTO (R_C6000_PREL31
, /* type */
480 2, /* size (0 = byte, 1 = short, 2 = long) */
482 TRUE
, /* pc_relative */
484 complain_overflow_dont
,/* complain_on_overflow */
485 bfd_elf_generic_reloc
, /* special_function */
486 "R_C6000_PREL31", /* name */
487 FALSE
, /* partial_inplace */
489 0x7fffffff, /* dst_mask */
490 TRUE
), /* pcrel_offset */
491 HOWTO (R_C6000_COPY
, /* type */
493 2, /* size (0 = byte, 1 = short, 2 = long) */
495 FALSE
, /* pc_relative */
497 complain_overflow_dont
,/* complain_on_overflow */
498 bfd_elf_generic_reloc
, /* special_function */
499 "R_C6000_COPY", /* name */
500 FALSE
, /* partial_inplace */
502 0xffffffff, /* dst_mask */
503 FALSE
), /* pcrel_offset */
504 HOWTO (R_C6000_JUMP_SLOT
, /* type */
506 2, /* size (0 = byte, 1 = short, 2 = long) */
508 FALSE
, /* pc_relative */
510 complain_overflow_dont
,/* complain_on_overflow */
511 bfd_elf_generic_reloc
, /* special_function */
512 "R_C6000_JUMP_SLOT", /* name */
513 FALSE
, /* partial_inplace */
515 0xffffffff, /* dst_mask */
516 FALSE
), /* pcrel_offset */
517 HOWTO (R_C6000_EHTYPE
, /* type */
519 2, /* size (0 = byte, 1 = short, 2 = long) */
521 FALSE
, /* pc_relative */
523 complain_overflow_dont
,/* complain_on_overflow */
524 bfd_elf_generic_reloc
, /* special_function */
525 "R_C6000_EHTYPE", /* name */
526 FALSE
, /* partial_inplace */
528 0xffffffff, /* dst_mask */
529 FALSE
), /* pcrel_offset */
530 HOWTO (R_C6000_PCR_H16
, /* type */
532 2, /* size (0 = byte, 1 = short, 2 = long) */
534 TRUE
, /* pc_relative */
536 complain_overflow_dont
,/* complain_on_overflow */
537 bfd_elf_generic_reloc
, /* special_function */
538 "R_C6000_PCR_H16", /* name */
539 FALSE
, /* partial_inplace */
541 0x007fff80, /* dst_mask */
542 TRUE
), /* pcrel_offset */
543 HOWTO (R_C6000_PCR_L16
, /* type */
545 2, /* size (0 = byte, 1 = short, 2 = long) */
547 TRUE
, /* pc_relative */
549 complain_overflow_dont
,/* complain_on_overflow */
550 bfd_elf_generic_reloc
, /* special_function */
551 "R_C6000_PCR_L16", /* name */
552 FALSE
, /* partial_inplace */
554 0x007fff80, /* dst_mask */
555 TRUE
), /* pcrel_offset */
778 HOWTO (R_C6000_ALIGN
, /* type */
780 0, /* size (0 = byte, 1 = short, 2 = long) */
782 FALSE
, /* pc_relative */
784 complain_overflow_dont
,/* complain_on_overflow */
785 bfd_elf_generic_reloc
, /* special_function */
786 "R_C6000_ALIGN", /* name */
787 FALSE
, /* partial_inplace */
790 FALSE
), /* pcrel_offset */
791 HOWTO (R_C6000_FPHEAD
, /* type */
793 0, /* size (0 = byte, 1 = short, 2 = long) */
795 FALSE
, /* pc_relative */
797 complain_overflow_dont
,/* complain_on_overflow */
798 bfd_elf_generic_reloc
, /* special_function */
799 "R_C6000_FPHEAD", /* name */
800 FALSE
, /* partial_inplace */
803 FALSE
), /* pcrel_offset */
804 HOWTO (R_C6000_NOCMP
, /* type */
806 0, /* size (0 = byte, 1 = short, 2 = long) */
808 FALSE
, /* pc_relative */
810 complain_overflow_dont
,/* complain_on_overflow */
811 bfd_elf_generic_reloc
, /* special_function */
812 "R_C6000_NOCMP", /* name */
813 FALSE
, /* partial_inplace */
816 FALSE
) /* pcrel_offset */
819 static reloc_howto_type elf32_tic6x_howto_table_rel
[] =
821 HOWTO (R_C6000_NONE
, /* type */
823 3, /* size (0 = byte, 1 = short, 2 = long) */
825 FALSE
, /* pc_relative */
827 complain_overflow_dont
,/* complain_on_overflow */
828 bfd_elf_generic_reloc
, /* special_function */
829 "R_C6000_NONE", /* name */
830 TRUE
, /* partial_inplace */
833 FALSE
), /* pcrel_offset */
834 HOWTO (R_C6000_ABS32
, /* type */
836 2, /* size (0 = byte, 1 = short, 2 = long) */
838 FALSE
, /* pc_relative */
840 complain_overflow_dont
,/* complain_on_overflow */
841 bfd_elf_generic_reloc
, /* special_function */
842 "R_C6000_ABS32", /* name */
843 TRUE
, /* partial_inplace */
844 0xffffffff, /* src_mask */
845 0xffffffff, /* dst_mask */
846 FALSE
), /* pcrel_offset */
847 HOWTO (R_C6000_ABS16
, /* type */
849 1, /* size (0 = byte, 1 = short, 2 = long) */
851 FALSE
, /* pc_relative */
853 complain_overflow_bitfield
,/* complain_on_overflow */
854 bfd_elf_generic_reloc
, /* special_function */
855 "R_C6000_ABS16", /* name */
856 TRUE
, /* partial_inplace */
857 0x0000ffff, /* src_mask */
858 0x0000ffff, /* dst_mask */
859 FALSE
), /* pcrel_offset */
860 HOWTO (R_C6000_ABS8
, /* type */
862 0, /* size (0 = byte, 1 = short, 2 = long) */
864 FALSE
, /* pc_relative */
866 complain_overflow_bitfield
,/* complain_on_overflow */
867 bfd_elf_generic_reloc
, /* special_function */
868 "R_C6000_ABS8", /* name */
869 TRUE
, /* partial_inplace */
870 0x000000ff, /* src_mask */
871 0x000000ff, /* dst_mask */
872 FALSE
), /* pcrel_offset */
873 HOWTO (R_C6000_PCR_S21
, /* type */
875 2, /* size (0 = byte, 1 = short, 2 = long) */
877 TRUE
, /* pc_relative */
879 complain_overflow_signed
,/* complain_on_overflow */
880 bfd_elf_generic_reloc
, /* special_function */
881 "R_C6000_PCR_S21", /* name */
882 TRUE
, /* partial_inplace */
883 0x0fffff80, /* src_mask */
884 0x0fffff80, /* dst_mask */
885 TRUE
), /* pcrel_offset */
886 HOWTO (R_C6000_PCR_S12
, /* type */
888 2, /* size (0 = byte, 1 = short, 2 = long) */
890 TRUE
, /* pc_relative */
892 complain_overflow_signed
,/* complain_on_overflow */
893 bfd_elf_generic_reloc
, /* special_function */
894 "R_C6000_PCR_S12", /* name */
895 TRUE
, /* partial_inplace */
896 0x0fff0000, /* src_mask */
897 0x0fff0000, /* dst_mask */
898 TRUE
), /* pcrel_offset */
899 HOWTO (R_C6000_PCR_S10
, /* type */
901 2, /* size (0 = byte, 1 = short, 2 = long) */
903 TRUE
, /* pc_relative */
905 complain_overflow_signed
,/* complain_on_overflow */
906 bfd_elf_generic_reloc
, /* special_function */
907 "R_C6000_PCR_S10", /* name */
908 TRUE
, /* partial_inplace */
909 0x007fe000, /* src_mask */
910 0x007fe000, /* dst_mask */
911 TRUE
), /* pcrel_offset */
912 HOWTO (R_C6000_PCR_S7
, /* type */
914 2, /* size (0 = byte, 1 = short, 2 = long) */
916 TRUE
, /* pc_relative */
918 complain_overflow_signed
,/* complain_on_overflow */
919 bfd_elf_generic_reloc
, /* special_function */
920 "R_C6000_PCR_S7", /* name */
921 TRUE
, /* partial_inplace */
922 0x007f0000, /* src_mask */
923 0x007f0000, /* dst_mask */
924 TRUE
), /* pcrel_offset */
925 HOWTO (R_C6000_ABS_S16
, /* type */
927 2, /* size (0 = byte, 1 = short, 2 = long) */
929 FALSE
, /* pc_relative */
931 complain_overflow_signed
,/* complain_on_overflow */
932 bfd_elf_generic_reloc
, /* special_function */
933 "R_C6000_ABS_S16", /* name */
934 TRUE
, /* partial_inplace */
935 0x007fff80, /* src_mask */
936 0x007fff80, /* dst_mask */
937 FALSE
), /* pcrel_offset */
938 HOWTO (R_C6000_ABS_L16
, /* type */
940 2, /* size (0 = byte, 1 = short, 2 = long) */
942 FALSE
, /* pc_relative */
944 complain_overflow_dont
,/* complain_on_overflow */
945 bfd_elf_generic_reloc
, /* special_function */
946 "R_C6000_ABS_L16", /* name */
947 TRUE
, /* partial_inplace */
948 0x007fff80, /* src_mask */
949 0x007fff80, /* dst_mask */
950 FALSE
), /* pcrel_offset */
951 EMPTY_HOWTO (R_C6000_ABS_H16
),
952 HOWTO (R_C6000_SBR_U15_B
, /* type */
954 2, /* size (0 = byte, 1 = short, 2 = long) */
956 FALSE
, /* pc_relative */
958 complain_overflow_unsigned
,/* complain_on_overflow */
959 bfd_elf_generic_reloc
, /* special_function */
960 "R_C6000_SBR_U15_B", /* name */
961 TRUE
, /* partial_inplace */
962 0x007fff00, /* src_mask */
963 0x007fff00, /* dst_mask */
964 FALSE
), /* pcrel_offset */
965 HOWTO (R_C6000_SBR_U15_H
, /* type */
967 2, /* size (0 = byte, 1 = short, 2 = long) */
969 FALSE
, /* pc_relative */
971 complain_overflow_unsigned
,/* complain_on_overflow */
972 bfd_elf_generic_reloc
, /* special_function */
973 "R_C6000_SBR_U15_H", /* name */
974 TRUE
, /* partial_inplace */
975 0x007fff00, /* src_mask */
976 0x007fff00, /* dst_mask */
977 FALSE
), /* pcrel_offset */
978 HOWTO (R_C6000_SBR_U15_W
, /* type */
980 2, /* size (0 = byte, 1 = short, 2 = long) */
982 FALSE
, /* pc_relative */
984 complain_overflow_unsigned
,/* complain_on_overflow */
985 bfd_elf_generic_reloc
, /* special_function */
986 "R_C6000_SBR_U15_W", /* name */
987 TRUE
, /* partial_inplace */
988 0x007fff00, /* src_mask */
989 0x007fff00, /* dst_mask */
990 FALSE
), /* pcrel_offset */
991 HOWTO (R_C6000_SBR_S16
, /* type */
993 2, /* size (0 = byte, 1 = short, 2 = long) */
995 FALSE
, /* pc_relative */
997 complain_overflow_signed
,/* complain_on_overflow */
998 bfd_elf_generic_reloc
, /* special_function */
999 "R_C6000_SBR_S16", /* name */
1000 TRUE
, /* partial_inplace */
1001 0x007fff80, /* src_mask */
1002 0x007fff80, /* dst_mask */
1003 FALSE
), /* pcrel_offset */
1004 HOWTO (R_C6000_SBR_L16_B
, /* type */
1006 2, /* size (0 = byte, 1 = short, 2 = long) */
1008 FALSE
, /* pc_relative */
1010 complain_overflow_dont
,/* complain_on_overflow */
1011 bfd_elf_generic_reloc
, /* special_function */
1012 "R_C6000_SBR_L16_B", /* name */
1013 TRUE
, /* partial_inplace */
1014 0x007fff80, /* src_mask */
1015 0x007fff80, /* dst_mask */
1016 FALSE
), /* pcrel_offset */
1017 HOWTO (R_C6000_SBR_L16_H
, /* type */
1019 2, /* size (0 = byte, 1 = short, 2 = long) */
1021 FALSE
, /* pc_relative */
1023 complain_overflow_dont
,/* complain_on_overflow */
1024 bfd_elf_generic_reloc
, /* special_function */
1025 "R_C6000_SBR_L16_H", /* name */
1026 TRUE
, /* partial_inplace */
1027 0x007fff80, /* src_mask */
1028 0x007fff80, /* dst_mask */
1029 FALSE
), /* pcrel_offset */
1030 HOWTO (R_C6000_SBR_L16_W
, /* type */
1032 2, /* size (0 = byte, 1 = short, 2 = long) */
1034 FALSE
, /* pc_relative */
1036 complain_overflow_dont
,/* complain_on_overflow */
1037 bfd_elf_generic_reloc
, /* special_function */
1038 "R_C6000_SBR_L16_W", /* name */
1039 TRUE
, /* partial_inplace */
1040 0x007fff80, /* src_mask */
1041 0x007fff80, /* dst_mask */
1042 FALSE
), /* pcrel_offset */
1043 EMPTY_HOWTO (R_C6000_SBR_H16_B
),
1044 EMPTY_HOWTO (R_C6000_SBR_H16_H
),
1045 EMPTY_HOWTO (R_C6000_SBR_H16_W
),
1046 HOWTO (R_C6000_SBR_GOT_U15_W
, /* type */
1048 2, /* size (0 = byte, 1 = short, 2 = long) */
1050 FALSE
, /* pc_relative */
1052 complain_overflow_unsigned
,/* complain_on_overflow */
1053 bfd_elf_generic_reloc
, /* special_function */
1054 "R_C6000_SBR_GOT_U15_W",/* name */
1055 TRUE
, /* partial_inplace */
1056 0x007fff00, /* src_mask */
1057 0x007fff00, /* dst_mask */
1058 FALSE
), /* pcrel_offset */
1059 HOWTO (R_C6000_SBR_GOT_L16_W
, /* type */
1061 2, /* size (0 = byte, 1 = short, 2 = long) */
1063 FALSE
, /* pc_relative */
1065 complain_overflow_dont
,/* complain_on_overflow */
1066 bfd_elf_generic_reloc
, /* special_function */
1067 "R_C6000_SBR_GOT_L16_W",/* name */
1068 TRUE
, /* partial_inplace */
1069 0x007fff80, /* src_mask */
1070 0x007fff80, /* dst_mask */
1071 FALSE
), /* pcrel_offset */
1072 EMPTY_HOWTO (R_C6000_SBR_GOT_H16_W
),
1073 HOWTO (R_C6000_DSBT_INDEX
, /* type */
1075 2, /* size (0 = byte, 1 = short, 2 = long) */
1077 FALSE
, /* pc_relative */
1079 complain_overflow_unsigned
,/* complain_on_overflow */
1080 bfd_elf_generic_reloc
, /* special_function */
1081 "R_C6000_DSBT_INDEX", /* name */
1082 TRUE
, /* partial_inplace */
1084 0x007fff00, /* dst_mask */
1085 FALSE
), /* pcrel_offset */
1086 HOWTO (R_C6000_PREL31
, /* type */
1088 2, /* size (0 = byte, 1 = short, 2 = long) */
1090 TRUE
, /* pc_relative */
1092 complain_overflow_dont
,/* complain_on_overflow */
1093 bfd_elf_generic_reloc
, /* special_function */
1094 "R_C6000_PREL31", /* name */
1095 TRUE
, /* partial_inplace */
1097 0x7fffffff, /* dst_mask */
1098 TRUE
), /* pcrel_offset */
1099 HOWTO (R_C6000_COPY
, /* type */
1101 2, /* size (0 = byte, 1 = short, 2 = long) */
1103 FALSE
, /* pc_relative */
1105 complain_overflow_dont
,/* complain_on_overflow */
1106 bfd_elf_generic_reloc
, /* special_function */
1107 "R_C6000_COPY", /* name */
1108 TRUE
, /* partial_inplace */
1110 0xffffffff, /* dst_mask */
1111 FALSE
), /* pcrel_offset */
1112 HOWTO (R_C6000_JUMP_SLOT
, /* type */
1114 2, /* size (0 = byte, 1 = short, 2 = long) */
1116 FALSE
, /* pc_relative */
1118 complain_overflow_dont
,/* complain_on_overflow */
1119 bfd_elf_generic_reloc
, /* special_function */
1120 "R_C6000_JUMP_SLOT", /* name */
1121 FALSE
, /* partial_inplace */
1123 0xffffffff, /* dst_mask */
1124 FALSE
), /* pcrel_offset */
1125 HOWTO (R_C6000_EHTYPE
, /* type */
1127 2, /* size (0 = byte, 1 = short, 2 = long) */
1129 FALSE
, /* pc_relative */
1131 complain_overflow_dont
,/* complain_on_overflow */
1132 bfd_elf_generic_reloc
, /* special_function */
1133 "R_C6000_EHTYPE", /* name */
1134 FALSE
, /* partial_inplace */
1136 0xffffffff, /* dst_mask */
1137 FALSE
), /* pcrel_offset */
1138 EMPTY_HOWTO (R_C6000_PCR_H16
),
1139 EMPTY_HOWTO (R_C6000_PCR_L16
),
1362 HOWTO (R_C6000_ALIGN
, /* type */
1364 0, /* size (0 = byte, 1 = short, 2 = long) */
1366 FALSE
, /* pc_relative */
1368 complain_overflow_dont
,/* complain_on_overflow */
1369 bfd_elf_generic_reloc
, /* special_function */
1370 "R_C6000_ALIGN", /* name */
1371 TRUE
, /* partial_inplace */
1374 FALSE
), /* pcrel_offset */
1375 HOWTO (R_C6000_FPHEAD
, /* type */
1377 0, /* size (0 = byte, 1 = short, 2 = long) */
1379 FALSE
, /* pc_relative */
1381 complain_overflow_dont
,/* complain_on_overflow */
1382 bfd_elf_generic_reloc
, /* special_function */
1383 "R_C6000_FPHEAD", /* name */
1384 TRUE
, /* partial_inplace */
1387 FALSE
), /* pcrel_offset */
1388 HOWTO (R_C6000_NOCMP
, /* type */
1390 0, /* size (0 = byte, 1 = short, 2 = long) */
1392 FALSE
, /* pc_relative */
1394 complain_overflow_dont
,/* complain_on_overflow */
1395 bfd_elf_generic_reloc
, /* special_function */
1396 "R_C6000_NOCMP", /* name */
1397 TRUE
, /* partial_inplace */
1400 FALSE
) /* pcrel_offset */
1403 /* Map BFD relocations to ELF relocations. */
1407 bfd_reloc_code_real_type bfd_reloc_val
;
1408 enum elf_tic6x_reloc_type elf_reloc_val
;
1411 static const tic6x_reloc_map elf32_tic6x_reloc_map
[] =
1413 { BFD_RELOC_NONE
, R_C6000_NONE
},
1414 { BFD_RELOC_32
, R_C6000_ABS32
},
1415 { BFD_RELOC_16
, R_C6000_ABS16
},
1416 { BFD_RELOC_8
, R_C6000_ABS8
},
1417 { BFD_RELOC_C6000_PCR_S21
, R_C6000_PCR_S21
},
1418 { BFD_RELOC_C6000_PCR_S12
, R_C6000_PCR_S12
},
1419 { BFD_RELOC_C6000_PCR_S10
, R_C6000_PCR_S10
},
1420 { BFD_RELOC_C6000_PCR_S7
, R_C6000_PCR_S7
},
1421 { BFD_RELOC_C6000_ABS_S16
, R_C6000_ABS_S16
},
1422 { BFD_RELOC_C6000_ABS_L16
, R_C6000_ABS_L16
},
1423 { BFD_RELOC_C6000_ABS_H16
, R_C6000_ABS_H16
},
1424 { BFD_RELOC_C6000_SBR_U15_B
, R_C6000_SBR_U15_B
},
1425 { BFD_RELOC_C6000_SBR_U15_H
, R_C6000_SBR_U15_H
},
1426 { BFD_RELOC_C6000_SBR_U15_W
, R_C6000_SBR_U15_W
},
1427 { BFD_RELOC_C6000_SBR_S16
, R_C6000_SBR_S16
},
1428 { BFD_RELOC_C6000_SBR_L16_B
, R_C6000_SBR_L16_B
},
1429 { BFD_RELOC_C6000_SBR_L16_H
, R_C6000_SBR_L16_H
},
1430 { BFD_RELOC_C6000_SBR_L16_W
, R_C6000_SBR_L16_W
},
1431 { BFD_RELOC_C6000_SBR_H16_B
, R_C6000_SBR_H16_B
},
1432 { BFD_RELOC_C6000_SBR_H16_H
, R_C6000_SBR_H16_H
},
1433 { BFD_RELOC_C6000_SBR_H16_W
, R_C6000_SBR_H16_W
},
1434 { BFD_RELOC_C6000_SBR_GOT_U15_W
, R_C6000_SBR_GOT_U15_W
},
1435 { BFD_RELOC_C6000_SBR_GOT_L16_W
, R_C6000_SBR_GOT_L16_W
},
1436 { BFD_RELOC_C6000_SBR_GOT_H16_W
, R_C6000_SBR_GOT_H16_W
},
1437 { BFD_RELOC_C6000_DSBT_INDEX
, R_C6000_DSBT_INDEX
},
1438 { BFD_RELOC_C6000_PREL31
, R_C6000_PREL31
},
1439 { BFD_RELOC_C6000_COPY
, R_C6000_COPY
},
1440 { BFD_RELOC_C6000_JUMP_SLOT
, R_C6000_JUMP_SLOT
},
1441 { BFD_RELOC_C6000_EHTYPE
, R_C6000_EHTYPE
},
1442 { BFD_RELOC_C6000_PCR_H16
, R_C6000_PCR_H16
},
1443 { BFD_RELOC_C6000_PCR_L16
, R_C6000_PCR_L16
},
1444 { BFD_RELOC_C6000_ALIGN
, R_C6000_ALIGN
},
1445 { BFD_RELOC_C6000_FPHEAD
, R_C6000_FPHEAD
},
1446 { BFD_RELOC_C6000_NOCMP
, R_C6000_NOCMP
}
1449 static reloc_howto_type
*
1450 elf32_tic6x_reloc_type_lookup (bfd
*abfd
, bfd_reloc_code_real_type code
)
1454 for (i
= 0; i
< ARRAY_SIZE (elf32_tic6x_reloc_map
); i
++)
1455 if (elf32_tic6x_reloc_map
[i
].bfd_reloc_val
== code
)
1457 enum elf_tic6x_reloc_type elf_reloc_val
;
1458 reloc_howto_type
*howto
;
1460 elf_reloc_val
= elf32_tic6x_reloc_map
[i
].elf_reloc_val
;
1461 if (elf32_tic6x_tdata (abfd
)->use_rela_p
)
1462 howto
= &elf32_tic6x_howto_table
[elf_reloc_val
];
1464 howto
= &elf32_tic6x_howto_table_rel
[elf_reloc_val
];
1466 /* Some relocations are RELA-only; do not return them for
1468 if (howto
->name
== NULL
)
1477 static reloc_howto_type
*
1478 elf32_tic6x_reloc_name_lookup (bfd
*abfd
, const char *r_name
)
1480 if (elf32_tic6x_tdata (abfd
)->use_rela_p
)
1484 for (i
= 0; i
< ARRAY_SIZE (elf32_tic6x_howto_table
); i
++)
1485 if (elf32_tic6x_howto_table
[i
].name
!= NULL
1486 && strcasecmp (elf32_tic6x_howto_table
[i
].name
, r_name
) == 0)
1487 return &elf32_tic6x_howto_table
[i
];
1493 for (i
= 0; i
< ARRAY_SIZE (elf32_tic6x_howto_table_rel
); i
++)
1494 if (elf32_tic6x_howto_table_rel
[i
].name
!= NULL
1495 && strcasecmp (elf32_tic6x_howto_table_rel
[i
].name
, r_name
) == 0)
1496 return &elf32_tic6x_howto_table_rel
[i
];
1503 elf32_tic6x_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*bfd_reloc
,
1504 Elf_Internal_Rela
*elf_reloc
)
1506 unsigned int r_type
;
1508 r_type
= ELF32_R_TYPE (elf_reloc
->r_info
);
1509 if (r_type
>= ARRAY_SIZE (elf32_tic6x_howto_table
))
1510 bfd_reloc
->howto
= NULL
;
1512 bfd_reloc
->howto
= &elf32_tic6x_howto_table
[r_type
];
1516 elf32_tic6x_info_to_howto_rel (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*bfd_reloc
,
1517 Elf_Internal_Rela
*elf_reloc
)
1519 unsigned int r_type
;
1521 r_type
= ELF32_R_TYPE (elf_reloc
->r_info
);
1522 if (r_type
>= ARRAY_SIZE (elf32_tic6x_howto_table_rel
))
1523 bfd_reloc
->howto
= NULL
;
1525 bfd_reloc
->howto
= &elf32_tic6x_howto_table_rel
[r_type
];
1529 elf32_tic6x_set_use_rela_p (bfd
*abfd
, bfd_boolean use_rela_p
)
1531 elf32_tic6x_tdata (abfd
)->use_rela_p
= use_rela_p
;
1534 /* Create an entry in a C6X ELF linker hash table. */
1536 static struct bfd_hash_entry
*
1537 elf32_tic6x_link_hash_newfunc (struct bfd_hash_entry
*entry
,
1538 struct bfd_hash_table
*table
,
1541 /* Allocate the structure if it has not already been allocated by a
1545 entry
= bfd_hash_allocate (table
,
1546 sizeof (struct elf32_tic6x_link_hash_entry
));
1551 /* Call the allocation method of the superclass. */
1552 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
1555 struct elf32_tic6x_link_hash_entry
*eh
;
1557 eh
= (struct elf32_tic6x_link_hash_entry
*) entry
;
1558 eh
->dyn_relocs
= NULL
;
1564 /* Create a C6X ELF linker hash table. */
1566 static struct bfd_link_hash_table
*
1567 elf32_tic6x_link_hash_table_create (bfd
*abfd
)
1569 struct elf32_tic6x_link_hash_table
*ret
;
1570 bfd_size_type amt
= sizeof (struct elf32_tic6x_link_hash_table
);
1572 ret
= bfd_zmalloc (amt
);
1576 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
,
1577 elf32_tic6x_link_hash_newfunc
,
1578 sizeof (struct elf32_tic6x_link_hash_entry
),
1586 ret
->elf
.is_relocatable_executable
= 1;
1588 return &ret
->elf
.root
;
1592 elf32_tic6x_final_link (bfd
*abfd
, struct bfd_link_info
*info
)
1594 if (bfd_link_pic (info
))
1596 obj_attribute
*out_attr
;
1597 out_attr
= elf_known_obj_attributes_proc (abfd
);
1598 if (out_attr
[Tag_ABI_PIC
].i
== 0)
1600 _bfd_error_handler (_("warning: generating a shared library "
1601 "containing non-PIC code"));
1603 if (out_attr
[Tag_ABI_PID
].i
== 0)
1605 _bfd_error_handler (_("warning: generating a shared library "
1606 "containing non-PID code"));
1609 /* Invoke the regular ELF backend linker to do all the work. */
1610 if (!bfd_elf_final_link (abfd
, info
))
1616 /* Called to pass PARAMS to the backend. We store them in the hash table
1617 associated with INFO. */
1620 elf32_tic6x_setup (struct bfd_link_info
*info
,
1621 struct elf32_tic6x_params
*params
)
1623 struct elf32_tic6x_link_hash_table
*htab
= elf32_tic6x_hash_table (info
);
1624 htab
->params
= *params
;
1627 /* Determine if we're dealing with a DSBT object. */
1630 elf32_tic6x_using_dsbt (bfd
*abfd
)
1632 return bfd_elf_get_obj_attr_int (abfd
, OBJ_ATTR_PROC
,
1636 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got and .dsbt
1637 sections in DYNOBJ, and set up shortcuts to them in our hash
1641 elf32_tic6x_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
1643 struct elf32_tic6x_link_hash_table
*htab
;
1646 htab
= elf32_tic6x_hash_table (info
);
1650 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
1654 flags
= (SEC_ALLOC
| SEC_LOAD
1655 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
1656 htab
->dsbt
= bfd_make_section_anyway_with_flags (dynobj
, ".dsbt",
1658 if (htab
->dsbt
== NULL
1659 || ! bfd_set_section_alignment (dynobj
, htab
->dsbt
, 2)
1660 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.splt
, 5))
1663 htab
->sdynbss
= bfd_get_linker_section (dynobj
, ".dynbss");
1664 if (!bfd_link_pic (info
))
1665 htab
->srelbss
= bfd_get_linker_section (dynobj
, ".rela.bss");
1668 || (!bfd_link_pic (info
) && !htab
->srelbss
))
1675 elf32_tic6x_mkobject (bfd
*abfd
)
1679 ret
= bfd_elf_allocate_object (abfd
, sizeof (struct elf32_tic6x_obj_tdata
),
1682 elf32_tic6x_set_use_rela_p (abfd
, TRUE
);
1686 /* Install relocation RELA into section SRELA, incrementing its
1690 elf32_tic6x_install_rela (bfd
*output_bfd
, asection
*srela
,
1691 Elf_Internal_Rela
*rela
)
1694 bfd_vma off
= srela
->reloc_count
++ * sizeof (Elf32_External_Rela
);
1695 loc
= srela
->contents
+ off
;
1696 BFD_ASSERT (off
< srela
->size
);
1697 bfd_elf32_swap_reloca_out (output_bfd
, rela
, loc
);
1700 /* Create a dynamic reloc against the GOT at offset OFFSET. The contents
1701 of the GOT at this offset have been initialized with the relocation. */
1704 elf32_tic6x_make_got_dynreloc (bfd
*output_bfd
,
1705 struct elf32_tic6x_link_hash_table
*htab
,
1706 asection
*sym_sec
, bfd_vma offset
)
1708 asection
*sgot
= htab
->elf
.sgot
;
1709 Elf_Internal_Rela outrel
;
1712 outrel
.r_offset
= sgot
->output_section
->vma
+ sgot
->output_offset
+ offset
;
1713 outrel
.r_addend
= bfd_get_32 (output_bfd
, sgot
->contents
+ offset
);
1714 if (sym_sec
&& sym_sec
->output_section
1715 && ! bfd_is_abs_section (sym_sec
->output_section
)
1716 && ! bfd_is_und_section (sym_sec
->output_section
))
1718 dynindx
= elf_section_data (sym_sec
->output_section
)->dynindx
;
1719 outrel
.r_addend
-= sym_sec
->output_section
->vma
;
1725 outrel
.r_info
= ELF32_R_INFO (dynindx
, R_C6000_ABS32
);
1726 elf32_tic6x_install_rela (output_bfd
, htab
->elf
.srelgot
, &outrel
);
1729 /* Finish up dynamic symbol handling. We set the contents of various
1730 dynamic sections here. */
1733 elf32_tic6x_finish_dynamic_symbol (bfd
* output_bfd
,
1734 struct bfd_link_info
*info
,
1735 struct elf_link_hash_entry
*h
,
1736 Elf_Internal_Sym
* sym
)
1738 struct elf32_tic6x_link_hash_table
*htab
;
1740 htab
= elf32_tic6x_hash_table (info
);
1742 if (h
->plt
.offset
!= (bfd_vma
) -1)
1745 bfd_vma got_section_offset
, got_dp_offset
, rela_offset
;
1746 Elf_Internal_Rela rela
;
1748 asection
*plt
, *gotplt
, *relplt
;
1749 const struct elf_backend_data
*bed
;
1751 bed
= get_elf_backend_data (output_bfd
);
1753 BFD_ASSERT (htab
->elf
.splt
!= NULL
);
1754 plt
= htab
->elf
.splt
;
1755 gotplt
= htab
->elf
.sgotplt
;
1756 relplt
= htab
->elf
.srelplt
;
1758 /* This symbol has an entry in the procedure linkage table. Set
1761 if ((h
->dynindx
== -1
1762 && !((h
->forced_local
|| bfd_link_executable (info
))
1764 && h
->type
== STT_GNU_IFUNC
))
1770 /* Get the index in the procedure linkage table which
1771 corresponds to this symbol. This is the index of this symbol
1772 in all the symbols for which we are making plt entries. The
1773 first entry in the procedure linkage table is reserved.
1775 Get the offset into the .got table of the entry that
1776 corresponds to this function. Each .got entry is 4 bytes.
1777 The first three are reserved.
1779 For static executables, we don't reserve anything. */
1781 plt_index
= h
->plt
.offset
/ PLT_ENTRY_SIZE
- 1;
1782 got_section_offset
= plt_index
+ bed
->got_header_size
/ 4;
1783 got_dp_offset
= got_section_offset
+ htab
->params
.dsbt_size
;
1784 rela_offset
= plt_index
* sizeof (Elf32_External_Rela
);
1786 got_section_offset
*= 4;
1788 /* Fill in the entry in the procedure linkage table. */
1790 /* ldw .d2t2 *+B14($GOT(f)), b2 */
1791 bfd_put_32 (output_bfd
, got_dp_offset
<< 8 | 0x0100006e,
1792 plt
->contents
+ h
->plt
.offset
);
1793 /* mvk .s2 low(rela_offset), b0 */
1794 bfd_put_32 (output_bfd
, (rela_offset
& 0xffff) << 7 | 0x0000002a,
1795 plt
->contents
+ h
->plt
.offset
+ 4);
1796 /* mvkh .s2 high(rela_offset), b0 */
1797 bfd_put_32 (output_bfd
, ((rela_offset
>> 16) & 0xffff) << 7 | 0x0000006a,
1798 plt
->contents
+ h
->plt
.offset
+ 8);
1800 bfd_put_32 (output_bfd
, 0x00002000,
1801 plt
->contents
+ h
->plt
.offset
+ 12);
1803 bfd_put_32 (output_bfd
, 0x00080362,
1804 plt
->contents
+ h
->plt
.offset
+ 16);
1806 bfd_put_32 (output_bfd
, 0x00008000,
1807 plt
->contents
+ h
->plt
.offset
+ 20);
1809 /* Fill in the entry in the global offset table. */
1810 bfd_put_32 (output_bfd
,
1811 (plt
->output_section
->vma
+ plt
->output_offset
),
1812 gotplt
->contents
+ got_section_offset
);
1814 /* Fill in the entry in the .rel.plt section. */
1815 rela
.r_offset
= (gotplt
->output_section
->vma
1816 + gotplt
->output_offset
1817 + got_section_offset
);
1818 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_C6000_JUMP_SLOT
);
1820 loc
= relplt
->contents
+ rela_offset
;
1821 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1823 if (!h
->def_regular
)
1825 /* Mark the symbol as undefined, rather than as defined in
1826 the .plt section. */
1827 sym
->st_shndx
= SHN_UNDEF
;
1832 if (h
->got
.offset
!= (bfd_vma
) -1)
1837 /* This symbol has an entry in the global offset table.
1840 sgot
= htab
->elf
.sgot
;
1841 srela
= htab
->elf
.srelgot
;
1842 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
1844 /* If this is a -Bsymbolic link, and the symbol is defined
1845 locally, we just want to emit a RELATIVE reloc. Likewise if
1846 the symbol was forced to be local because of a version file.
1847 The entry in the global offset table will already have been
1848 initialized in the relocate_section function. */
1849 if (bfd_link_pic (info
)
1850 && (SYMBOLIC_BIND (info
, h
)
1851 || h
->dynindx
== -1 || h
->forced_local
) && h
->def_regular
)
1853 asection
*s
= h
->root
.u
.def
.section
;
1854 elf32_tic6x_make_got_dynreloc (output_bfd
, htab
, s
,
1855 h
->got
.offset
& ~(bfd_vma
) 1);
1859 Elf_Internal_Rela outrel
;
1860 bfd_put_32 (output_bfd
, (bfd_vma
) 0,
1861 sgot
->contents
+ (h
->got
.offset
& ~(bfd_vma
) 1));
1862 outrel
.r_offset
= (sgot
->output_section
->vma
1863 + sgot
->output_offset
1864 + (h
->got
.offset
& ~(bfd_vma
) 1));
1865 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_C6000_ABS32
);
1866 outrel
.r_addend
= 0;
1868 elf32_tic6x_install_rela (output_bfd
, srela
, &outrel
);
1874 Elf_Internal_Rela rel
;
1876 /* This symbol needs a copy reloc. Set it up. */
1878 if (h
->dynindx
== -1
1879 || (h
->root
.type
!= bfd_link_hash_defined
1880 && h
->root
.type
!= bfd_link_hash_defweak
)
1881 || htab
->srelbss
== NULL
)
1884 rel
.r_offset
= (h
->root
.u
.def
.value
1885 + h
->root
.u
.def
.section
->output_section
->vma
1886 + h
->root
.u
.def
.section
->output_offset
);
1887 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_C6000_COPY
);
1890 elf32_tic6x_install_rela (output_bfd
, htab
->srelbss
, &rel
);
1893 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
1894 if (h
== elf_hash_table (info
)->hdynamic
1895 || h
== elf_hash_table (info
)->hgot
)
1896 sym
->st_shndx
= SHN_ABS
;
1901 /* Unwinding tables are not referenced directly. This pass marks them as
1902 required if the corresponding code section is marked. */
1905 elf32_tic6x_gc_mark_extra_sections (struct bfd_link_info
*info
,
1906 elf_gc_mark_hook_fn gc_mark_hook
)
1909 Elf_Internal_Shdr
**elf_shdrp
;
1912 _bfd_elf_gc_mark_extra_sections (info
, gc_mark_hook
);
1914 /* Marking EH data may cause additional code sections to be marked,
1915 requiring multiple passes. */
1920 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link
.next
)
1924 if (! is_tic6x_elf (sub
))
1927 elf_shdrp
= elf_elfsections (sub
);
1928 for (o
= sub
->sections
; o
!= NULL
; o
= o
->next
)
1930 Elf_Internal_Shdr
*hdr
;
1932 hdr
= &elf_section_data (o
)->this_hdr
;
1933 if (hdr
->sh_type
== SHT_C6000_UNWIND
1935 && hdr
->sh_link
< elf_numsections (sub
)
1937 && elf_shdrp
[hdr
->sh_link
]->bfd_section
->gc_mark
)
1940 if (!_bfd_elf_gc_mark (info
, o
, gc_mark_hook
))
1950 /* Return TRUE if this is an unwinding table index. */
1953 is_tic6x_elf_unwind_section_name (const char *name
)
1955 return (CONST_STRNEQ (name
, ELF_STRING_C6000_unwind
)
1956 || CONST_STRNEQ (name
, ELF_STRING_C6000_unwind_once
));
1960 /* Set the type and flags for an unwinding index table. We do this by
1961 the section name, which is a hack, but ought to work. */
1964 elf32_tic6x_fake_sections (bfd
*abfd ATTRIBUTE_UNUSED
,
1965 Elf_Internal_Shdr
*hdr
, asection
*sec
)
1969 name
= bfd_get_section_name (abfd
, sec
);
1971 if (is_tic6x_elf_unwind_section_name (name
))
1973 hdr
->sh_type
= SHT_C6000_UNWIND
;
1974 hdr
->sh_flags
|= SHF_LINK_ORDER
;
1980 /* Update the got entry reference counts for the section being removed. */
1983 elf32_tic6x_gc_sweep_hook (bfd
*abfd
,
1984 struct bfd_link_info
*info
,
1986 const Elf_Internal_Rela
*relocs
)
1988 struct elf32_tic6x_link_hash_table
*htab
;
1989 Elf_Internal_Shdr
*symtab_hdr
;
1990 struct elf_link_hash_entry
**sym_hashes
;
1991 bfd_signed_vma
*local_got_refcounts
;
1992 const Elf_Internal_Rela
*rel
, *relend
;
1994 if (bfd_link_relocatable (info
))
1997 htab
= elf32_tic6x_hash_table (info
);
2001 elf_section_data (sec
)->local_dynrel
= NULL
;
2003 symtab_hdr
= &elf_symtab_hdr (abfd
);
2004 sym_hashes
= elf_sym_hashes (abfd
);
2005 local_got_refcounts
= elf_local_got_refcounts (abfd
);
2007 relend
= relocs
+ sec
->reloc_count
;
2008 for (rel
= relocs
; rel
< relend
; rel
++)
2010 unsigned long r_symndx
;
2011 unsigned int r_type
;
2012 struct elf_link_hash_entry
*h
= NULL
;
2014 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2015 if (r_symndx
>= symtab_hdr
->sh_info
)
2017 struct elf32_tic6x_link_hash_entry
*eh
;
2018 struct elf_dyn_relocs
**pp
;
2019 struct elf_dyn_relocs
*p
;
2021 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
2022 while (h
->root
.type
== bfd_link_hash_indirect
2023 || h
->root
.type
== bfd_link_hash_warning
)
2024 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2025 eh
= (struct elf32_tic6x_link_hash_entry
*) h
;
2027 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
2030 /* Everything must go for SEC. */
2036 r_type
= ELF32_R_TYPE (rel
->r_info
);
2040 case R_C6000_SBR_GOT_U15_W
:
2041 case R_C6000_SBR_GOT_L16_W
:
2042 case R_C6000_SBR_GOT_H16_W
:
2043 case R_C6000_EHTYPE
:
2046 if (h
->got
.refcount
> 0)
2047 h
->got
.refcount
-= 1;
2049 else if (local_got_refcounts
!= NULL
)
2051 if (local_got_refcounts
[r_symndx
] > 0)
2052 local_got_refcounts
[r_symndx
] -= 1;
2064 /* Adjust a symbol defined by a dynamic object and referenced by a
2065 regular object. The current definition is in some section of the
2066 dynamic object, but we're not including those sections. We have to
2067 change the definition to something the rest of the link can
2071 elf32_tic6x_adjust_dynamic_symbol (struct bfd_link_info
*info
,
2072 struct elf_link_hash_entry
*h
)
2074 struct elf32_tic6x_link_hash_table
*htab
;
2078 dynobj
= elf_hash_table (info
)->dynobj
;
2080 /* Make sure we know what is going on here. */
2081 BFD_ASSERT (dynobj
!= NULL
2083 || h
->u
.weakdef
!= NULL
2084 || (h
->def_dynamic
&& h
->ref_regular
&& !h
->def_regular
)));
2086 /* If this is a function, put it in the procedure linkage table. We
2087 will fill in the contents of the procedure linkage table later,
2088 when we know the address of the .got section. */
2089 if (h
->type
== STT_FUNC
2092 if (h
->plt
.refcount
<= 0
2093 || SYMBOL_CALLS_LOCAL (info
, h
)
2094 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
2095 && h
->root
.type
== bfd_link_hash_undefweak
))
2097 /* This case can occur if we saw a PLT32 reloc in an input
2098 file, but the symbol was never referred to by a dynamic
2099 object, or if all references were garbage collected. In
2100 such a case, we don't actually need to build a procedure
2101 linkage table, and we can just do a PC32 reloc instead. */
2102 h
->plt
.offset
= (bfd_vma
) -1;
2109 /* If this is a weak symbol, and there is a real definition, the
2110 processor independent code will have arranged for us to see the
2111 real definition first, and we can just use the same value. */
2112 if (h
->u
.weakdef
!= NULL
)
2114 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
2115 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
2116 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
2117 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
2118 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
2122 /* This is a reference to a symbol defined by a dynamic object which
2123 is not a function. */
2125 /* If we are creating a shared library, we must presume that the
2126 only references to the symbol are via the global offset table.
2127 For such cases we need not do anything here; the relocations will
2128 be handled correctly by relocate_section. */
2129 if (bfd_link_pic (info
))
2132 /* If there are no references to this symbol that do not use the
2133 GOT, we don't need to generate a copy reloc. */
2134 if (!h
->non_got_ref
)
2137 /* If -z nocopyreloc was given, we won't generate them either. */
2138 if (info
->nocopyreloc
)
2144 htab
= elf32_tic6x_hash_table (info
);
2148 /* We must allocate the symbol in our .dynbss section, which will
2149 become part of the .bss section of the executable. There will be
2150 an entry for this symbol in the .dynsym section. The dynamic
2151 object will contain position independent code, so all references
2152 from the dynamic object to this symbol will go through the global
2153 offset table. The dynamic linker will use the .dynsym entry to
2154 determine the address it must put in the global offset table, so
2155 both the dynamic object and the regular object will refer to the
2156 same memory location for the variable. */
2158 /* We must generate a R_C6000_COPY reloc to tell the dynamic linker to
2159 copy the initial value out of the dynamic object and into the
2160 runtime process image. */
2161 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
2163 htab
->srelbss
->size
+= sizeof (Elf32_External_Rela
);
2169 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
2173 elf32_tic6x_new_section_hook (bfd
*abfd
, asection
*sec
)
2177 /* Allocate target specific section data. */
2178 if (!sec
->used_by_bfd
)
2180 _tic6x_elf_section_data
*sdata
;
2181 bfd_size_type amt
= sizeof (*sdata
);
2183 sdata
= (_tic6x_elf_section_data
*) bfd_zalloc (abfd
, amt
);
2186 sec
->used_by_bfd
= sdata
;
2189 ret
= _bfd_elf_new_section_hook (abfd
, sec
);
2190 sec
->use_rela_p
= elf32_tic6x_tdata (abfd
)->use_rela_p
;
2195 /* Return true if relocation REL against section SEC is a REL rather
2196 than RELA relocation. RELOCS is the first relocation in the
2197 section and ABFD is the bfd that contains SEC. */
2200 elf32_tic6x_rel_relocation_p (bfd
*abfd
, asection
*sec
,
2201 const Elf_Internal_Rela
*relocs
,
2202 const Elf_Internal_Rela
*rel
)
2204 Elf_Internal_Shdr
*rel_hdr
;
2205 const struct elf_backend_data
*bed
;
2207 /* To determine which flavor of relocation this is, we depend on the
2208 fact that the INPUT_SECTION's REL_HDR is read before RELA_HDR. */
2209 rel_hdr
= elf_section_data (sec
)->rel
.hdr
;
2210 if (rel_hdr
== NULL
)
2212 bed
= get_elf_backend_data (abfd
);
2213 return ((size_t) (rel
- relocs
)
2214 < NUM_SHDR_ENTRIES (rel_hdr
) * bed
->s
->int_rels_per_ext_rel
);
2217 /* We need dynamic symbols for every section, since segments can
2218 relocate independently. */
2220 elf32_tic6x_link_omit_section_dynsym (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2221 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
2224 switch (elf_section_data (p
)->this_hdr
.sh_type
)
2228 /* If sh_type is yet undecided, assume it could be
2229 SHT_PROGBITS/SHT_NOBITS. */
2233 /* There shouldn't be section relative relocations
2234 against any other section. */
2241 elf32_tic6x_relocate_section (bfd
*output_bfd
,
2242 struct bfd_link_info
*info
,
2244 asection
*input_section
,
2246 Elf_Internal_Rela
*relocs
,
2247 Elf_Internal_Sym
*local_syms
,
2248 asection
**local_sections
)
2250 struct elf32_tic6x_link_hash_table
*htab
;
2251 Elf_Internal_Shdr
*symtab_hdr
;
2252 struct elf_link_hash_entry
**sym_hashes
;
2253 bfd_vma
*local_got_offsets
;
2254 Elf_Internal_Rela
*rel
;
2255 Elf_Internal_Rela
*relend
;
2256 bfd_boolean ok
= TRUE
;
2258 htab
= elf32_tic6x_hash_table (info
);
2259 symtab_hdr
= & elf_symtab_hdr (input_bfd
);
2260 sym_hashes
= elf_sym_hashes (input_bfd
);
2261 local_got_offsets
= elf_local_got_offsets (input_bfd
);
2263 relend
= relocs
+ input_section
->reloc_count
;
2265 for (rel
= relocs
; rel
< relend
; rel
++)
2268 unsigned long r_symndx
;
2270 reloc_howto_type
*howto
;
2271 Elf_Internal_Sym
*sym
;
2273 struct elf_link_hash_entry
*h
;
2274 bfd_vma off
, off2
, relocation
;
2275 bfd_boolean unresolved_reloc
;
2276 bfd_reloc_status_type r
;
2277 struct bfd_link_hash_entry
*sbh
;
2280 r_type
= ELF32_R_TYPE (rel
->r_info
);
2281 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2283 is_rel
= elf32_tic6x_rel_relocation_p (input_bfd
, input_section
,
2287 elf32_tic6x_info_to_howto_rel (input_bfd
, &bfd_reloc
, rel
);
2289 elf32_tic6x_info_to_howto (input_bfd
, &bfd_reloc
, rel
);
2290 howto
= bfd_reloc
.howto
;
2293 bfd_set_error (bfd_error_bad_value
);
2300 unresolved_reloc
= FALSE
;
2302 if (r_symndx
< symtab_hdr
->sh_info
)
2304 sym
= local_syms
+ r_symndx
;
2305 sec
= local_sections
[r_symndx
];
2306 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
2310 bfd_boolean warned
, ignored
;
2312 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
2313 r_symndx
, symtab_hdr
, sym_hashes
,
2315 unresolved_reloc
, warned
, ignored
);
2318 if (sec
!= NULL
&& discarded_section (sec
))
2319 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
2320 rel
, 1, relend
, howto
, 0, contents
);
2322 if (bfd_link_relocatable (info
))
2326 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
2329 relocation
= sec
->output_offset
+ sym
->st_value
;
2330 r
= _bfd_relocate_contents (howto
, input_bfd
, relocation
,
2331 contents
+ rel
->r_offset
);
2341 case R_C6000_FPHEAD
:
2343 /* No action needed. */
2346 case R_C6000_PCR_S21
:
2347 /* A branch to an undefined weak symbol is turned into a
2348 "b .s2 B3" instruction if the existing insn is of the
2349 form "b .s2 symbol". */
2350 if (h
? h
->root
.type
== bfd_link_hash_undefweak
2351 && (htab
->elf
.splt
== NULL
|| h
->plt
.offset
== (bfd_vma
) -1)
2352 : r_symndx
!= STN_UNDEF
&& bfd_is_und_section (sec
))
2354 unsigned long oldval
;
2355 oldval
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2357 if ((oldval
& 0x7e) == 0x12)
2359 oldval
&= 0xF0000001;
2360 bfd_put_32 (input_bfd
, oldval
| 0x000c0362,
2361 contents
+ rel
->r_offset
);
2368 case R_C6000_PCR_S12
:
2369 case R_C6000_PCR_S10
:
2370 case R_C6000_PCR_S7
:
2372 && h
->plt
.offset
!= (bfd_vma
) -1
2373 && htab
->elf
.splt
!= NULL
)
2375 relocation
= (htab
->elf
.splt
->output_section
->vma
2376 + htab
->elf
.splt
->output_offset
2380 /* Generic PC-relative handling produces a value relative to
2381 the exact location of the relocation. Adjust it to be
2382 relative to the start of the fetch packet instead. */
2383 relocation
+= (input_section
->output_section
->vma
2384 + input_section
->output_offset
2385 + rel
->r_offset
) & 0x1f;
2386 unresolved_reloc
= FALSE
;
2389 case R_C6000_PCR_H16
:
2390 case R_C6000_PCR_L16
:
2391 off
= (input_section
->output_section
->vma
2392 + input_section
->output_offset
2394 /* These must be calculated as R = S - FP(FP(PC) - A).
2395 PC, here, is the value we just computed in OFF. RELOCATION
2396 has the address of S + A. */
2397 relocation
-= rel
->r_addend
;
2398 off2
= ((off
& ~(bfd_vma
)0x1f) - rel
->r_addend
) & (bfd_vma
)~0x1f;
2399 off2
= relocation
- off2
;
2400 relocation
= off
+ off2
;
2403 case R_C6000_DSBT_INDEX
:
2404 relocation
= elf32_tic6x_hash_table (info
)->params
.dsbt_index
;
2405 if (!bfd_link_pic (info
) || relocation
!= 0)
2412 case R_C6000_ABS_S16
:
2413 case R_C6000_ABS_L16
:
2414 case R_C6000_ABS_H16
:
2415 /* When generating a shared object or relocatable executable, these
2416 relocations are copied into the output file to be resolved at
2418 if ((bfd_link_pic (info
) || elf32_tic6x_using_dsbt (output_bfd
))
2419 && (input_section
->flags
& SEC_ALLOC
)
2421 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
2422 || h
->root
.type
!= bfd_link_hash_undefweak
))
2424 Elf_Internal_Rela outrel
;
2425 bfd_boolean skip
, relocate
;
2428 unresolved_reloc
= FALSE
;
2430 sreloc
= elf_section_data (input_section
)->sreloc
;
2431 BFD_ASSERT (sreloc
!= NULL
&& sreloc
->contents
!= NULL
);
2437 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
2439 if (outrel
.r_offset
== (bfd_vma
) -1)
2441 else if (outrel
.r_offset
== (bfd_vma
) -2)
2442 skip
= TRUE
, relocate
= TRUE
;
2443 outrel
.r_offset
+= (input_section
->output_section
->vma
2444 + input_section
->output_offset
);
2447 memset (&outrel
, 0, sizeof outrel
);
2450 && (!bfd_link_pic (info
)
2451 || !SYMBOLIC_BIND (info
, h
)
2452 || !h
->def_regular
))
2454 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
2455 outrel
.r_addend
= rel
->r_addend
;
2461 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2463 if (bfd_is_abs_section (sec
))
2465 else if (sec
== NULL
|| sec
->owner
== NULL
)
2467 bfd_set_error (bfd_error_bad_value
);
2474 osec
= sec
->output_section
;
2475 indx
= elf_section_data (osec
)->dynindx
;
2476 outrel
.r_addend
-= osec
->vma
;
2477 BFD_ASSERT (indx
!= 0);
2480 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
2483 elf32_tic6x_install_rela (output_bfd
, sreloc
, &outrel
);
2485 /* If this reloc is against an external symbol, we do not want to
2486 fiddle with the addend. Otherwise, we need to include the symbol
2487 value so that it becomes an addend for the dynamic reloc. */
2492 /* Generic logic OK. */
2495 case R_C6000_SBR_U15_B
:
2496 case R_C6000_SBR_U15_H
:
2497 case R_C6000_SBR_U15_W
:
2498 case R_C6000_SBR_S16
:
2499 case R_C6000_SBR_L16_B
:
2500 case R_C6000_SBR_L16_H
:
2501 case R_C6000_SBR_L16_W
:
2502 case R_C6000_SBR_H16_B
:
2503 case R_C6000_SBR_H16_H
:
2504 case R_C6000_SBR_H16_W
:
2505 sbh
= bfd_link_hash_lookup (info
->hash
, "__c6xabi_DSBT_BASE",
2506 FALSE
, FALSE
, TRUE
);
2508 && (sbh
->type
== bfd_link_hash_defined
2509 || sbh
->type
== bfd_link_hash_defweak
))
2511 if (h
? (h
->root
.type
== bfd_link_hash_undefweak
2512 && (htab
->elf
.splt
== NULL
2513 || h
->plt
.offset
== (bfd_vma
) -1))
2514 : r_symndx
!= STN_UNDEF
&& bfd_is_und_section (sec
))
2517 relocation
-= (sbh
->u
.def
.value
2518 + sbh
->u
.def
.section
->output_section
->vma
2519 + sbh
->u
.def
.section
->output_offset
);
2523 _bfd_error_handler (_("%B: SB-relative relocation but "
2524 "__c6xabi_DSBT_BASE not defined"),
2531 case R_C6000_SBR_GOT_U15_W
:
2532 case R_C6000_SBR_GOT_L16_W
:
2533 case R_C6000_SBR_GOT_H16_W
:
2534 case R_C6000_EHTYPE
:
2535 /* Relocation is to the entry for this symbol in the global
2537 if (htab
->elf
.sgot
== NULL
)
2544 off
= h
->got
.offset
;
2545 dyn
= htab
->elf
.dynamic_sections_created
;
2546 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
2547 bfd_link_pic (info
),
2549 || (bfd_link_pic (info
)
2550 && SYMBOL_REFERENCES_LOCAL (info
, h
))
2551 || (ELF_ST_VISIBILITY (h
->other
)
2552 && h
->root
.type
== bfd_link_hash_undefweak
))
2554 /* This is actually a static link, or it is a
2555 -Bsymbolic link and the symbol is defined
2556 locally, or the symbol was forced to be local
2557 because of a version file. We must initialize
2558 this entry in the global offset table. Since the
2559 offset must always be a multiple of 4, we use the
2560 least significant bit to record whether we have
2561 initialized it already.
2563 When doing a dynamic link, we create a .rel.got
2564 relocation entry to initialize the value. This
2565 is done in the finish_dynamic_symbol routine. */
2570 bfd_put_32 (output_bfd
, relocation
,
2571 htab
->elf
.sgot
->contents
+ off
);
2574 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
2575 bfd_link_pic (info
),
2577 && !(ELF_ST_VISIBILITY (h
->other
)
2578 && h
->root
.type
== bfd_link_hash_undefweak
))
2579 elf32_tic6x_make_got_dynreloc (output_bfd
, htab
, sec
,
2584 unresolved_reloc
= FALSE
;
2588 if (local_got_offsets
== NULL
)
2591 off
= local_got_offsets
[r_symndx
];
2593 /* The offset must always be a multiple of 4. We use
2594 the least significant bit to record whether we have
2595 already generated the necessary reloc. */
2600 bfd_put_32 (output_bfd
, relocation
,
2601 htab
->elf
.sgot
->contents
+ off
);
2603 if (bfd_link_pic (info
) || elf32_tic6x_using_dsbt (output_bfd
))
2604 elf32_tic6x_make_got_dynreloc (output_bfd
, htab
, sec
, off
);
2606 local_got_offsets
[r_symndx
] |= 1;
2610 if (off
>= (bfd_vma
) -2)
2614 relocation
= (htab
->elf
.sgot
->output_section
->vma
2615 + htab
->elf
.sgot
->output_offset
+ off
2616 - htab
->dsbt
->output_section
->vma
2617 - htab
->dsbt
->output_offset
);
2619 relocation
= (htab
->elf
.sgot
->output_section
->vma
2620 + htab
->elf
.sgot
->output_offset
+ off
2621 - htab
->elf
.sgotplt
->output_section
->vma
2622 - htab
->elf
.sgotplt
->output_offset
);
2624 if (rel
->r_addend
!= 0)
2626 /* We can't do anything for a relocation which is against
2627 a symbol *plus offset*. GOT holds relocations for
2628 symbols. Make this an error; the compiler isn't
2629 allowed to pass us these kinds of things. */
2632 /* xgettext:c-format */
2633 (_("%B, section %A: relocation %s with non-zero addend %d"
2634 " against local symbol"),
2637 elf32_tic6x_howto_table
[r_type
].name
,
2641 /* xgettext:c-format */
2642 (_("%B, section %A: relocation %s with non-zero addend %d"
2643 " against symbol `%s'"),
2646 elf32_tic6x_howto_table
[r_type
].name
,
2648 h
->root
.root
.string
[0] != '\0' ? h
->root
.root
.string
2649 : _("[whose name is lost]"));
2651 bfd_set_error (bfd_error_bad_value
);
2656 case R_C6000_PREL31
:
2658 && h
->plt
.offset
!= (bfd_vma
) -1
2659 && htab
->elf
.splt
!= NULL
)
2661 relocation
= (htab
->elf
.splt
->output_section
->vma
2662 + htab
->elf
.splt
->output_offset
2668 /* Invalid in relocatable object. */
2670 /* Unknown relocation. */
2671 /* xgettext:c-format */
2672 _bfd_error_handler (_("%B: invalid relocation type %d"),
2678 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
2679 contents
, rel
->r_offset
,
2680 relocation
, rel
->r_addend
);
2683 if (r
== bfd_reloc_ok
2684 && howto
->complain_on_overflow
== complain_overflow_bitfield
)
2686 /* Generic overflow handling accepts cases the ABI says
2687 should be rejected for R_C6000_ABS16 and
2689 bfd_vma value
= (relocation
+ rel
->r_addend
) & 0xffffffff;
2690 bfd_vma sbit
= 1 << (howto
->bitsize
- 1);
2691 bfd_vma sbits
= (-(bfd_vma
) sbit
) & 0xffffffff;
2692 bfd_vma value_sbits
= value
& sbits
;
2694 if (value_sbits
!= 0
2695 && value_sbits
!= sbit
2696 && value_sbits
!= sbits
)
2697 r
= bfd_reloc_overflow
;
2700 if (r
!= bfd_reloc_ok
)
2703 const char *error_message
;
2706 name
= h
->root
.root
.string
;
2709 name
= bfd_elf_string_from_elf_section (input_bfd
,
2710 symtab_hdr
->sh_link
,
2715 name
= bfd_section_name (input_bfd
, sec
);
2720 case bfd_reloc_overflow
:
2721 /* If the overflowing reloc was to an undefined symbol,
2722 we have already printed one error message and there
2723 is no point complaining again. */
2724 if (!h
|| h
->root
.type
!= bfd_link_hash_undefined
)
2725 (*info
->callbacks
->reloc_overflow
)
2726 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
2727 (bfd_vma
) 0, input_bfd
, input_section
, rel
->r_offset
);
2730 case bfd_reloc_undefined
:
2731 (*info
->callbacks
->undefined_symbol
) (info
, name
, input_bfd
,
2733 rel
->r_offset
, TRUE
);
2736 case bfd_reloc_outofrange
:
2737 error_message
= _("out of range");
2740 case bfd_reloc_notsupported
:
2741 error_message
= _("unsupported relocation");
2744 case bfd_reloc_dangerous
:
2745 error_message
= _("dangerous relocation");
2749 error_message
= _("unknown error");
2753 BFD_ASSERT (error_message
!= NULL
);
2754 (*info
->callbacks
->reloc_dangerous
)
2755 (info
, error_message
, input_bfd
, input_section
, rel
->r_offset
);
2765 /* Look through the relocs for a section during the first phase, and
2766 calculate needed space in the global offset table, procedure linkage
2767 table, and dynamic reloc sections. */
2770 elf32_tic6x_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
2771 asection
*sec
, const Elf_Internal_Rela
*relocs
)
2773 struct elf32_tic6x_link_hash_table
*htab
;
2774 Elf_Internal_Shdr
*symtab_hdr
;
2775 struct elf_link_hash_entry
**sym_hashes
;
2776 const Elf_Internal_Rela
*rel
;
2777 const Elf_Internal_Rela
*rel_end
;
2780 if (bfd_link_relocatable (info
))
2783 htab
= elf32_tic6x_hash_table (info
);
2784 symtab_hdr
= &elf_symtab_hdr (abfd
);
2785 sym_hashes
= elf_sym_hashes (abfd
);
2787 /* Create dynamic sections for relocatable executables so that we can
2788 copy relocations. */
2789 if ((bfd_link_pic (info
) || elf32_tic6x_using_dsbt (abfd
))
2790 && ! htab
->elf
.dynamic_sections_created
)
2792 if (! _bfd_elf_link_create_dynamic_sections (abfd
, info
))
2798 rel_end
= relocs
+ sec
->reloc_count
;
2799 for (rel
= relocs
; rel
< rel_end
; rel
++)
2801 unsigned int r_type
;
2802 unsigned long r_symndx
;
2803 struct elf_link_hash_entry
*h
;
2804 Elf_Internal_Sym
*isym
;
2806 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2807 r_type
= ELF32_R_TYPE (rel
->r_info
);
2809 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
2811 /* xgettext:c-format */
2812 _bfd_error_handler (_("%B: bad symbol index: %d"),
2817 if (r_symndx
< symtab_hdr
->sh_info
)
2819 /* A local symbol. */
2820 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
2829 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
2830 while (h
->root
.type
== bfd_link_hash_indirect
2831 || h
->root
.type
== bfd_link_hash_warning
)
2832 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2834 /* PR15323, ref flags aren't set for references in the same
2836 h
->root
.non_ir_ref
= 1;
2841 case R_C6000_PCR_S21
:
2842 case R_C6000_PREL31
:
2843 /* This symbol requires a procedure linkage table entry. We
2844 actually build the entry in adjust_dynamic_symbol,
2845 because this might be a case of linking PIC code which is
2846 never referenced by a dynamic object, in which case we
2847 don't need to generate a procedure linkage table entry
2850 /* If this is a local symbol, we resolve it directly without
2851 creating a procedure linkage table entry. */
2856 h
->plt
.refcount
+= 1;
2859 case R_C6000_SBR_GOT_U15_W
:
2860 case R_C6000_SBR_GOT_L16_W
:
2861 case R_C6000_SBR_GOT_H16_W
:
2862 case R_C6000_EHTYPE
:
2863 /* This symbol requires a global offset table entry. */
2866 h
->got
.refcount
+= 1;
2870 bfd_signed_vma
*local_got_refcounts
;
2872 /* This is a global offset table entry for a local symbol. */
2873 local_got_refcounts
= elf_local_got_refcounts (abfd
);
2874 if (local_got_refcounts
== NULL
)
2878 size
= symtab_hdr
->sh_info
;
2879 size
*= (sizeof (bfd_signed_vma
)
2880 + sizeof (bfd_vma
) + sizeof(char));
2881 local_got_refcounts
= bfd_zalloc (abfd
, size
);
2882 if (local_got_refcounts
== NULL
)
2884 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
2886 local_got_refcounts
[r_symndx
] += 1;
2889 if (htab
->elf
.sgot
== NULL
)
2891 if (htab
->elf
.dynobj
== NULL
)
2892 htab
->elf
.dynobj
= abfd
;
2893 if (!_bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
2898 case R_C6000_DSBT_INDEX
:
2899 /* We'd like to check for nonzero dsbt_index here, but it's
2900 set up only after check_relocs is called. Instead, we
2901 store the number of R_C6000_DSBT_INDEX relocs in the
2902 pc_count field, and potentially discard the extra space
2903 in elf32_tic6x_allocate_dynrelocs. */
2904 if (!bfd_link_pic (info
))
2911 case R_C6000_ABS_S16
:
2912 case R_C6000_ABS_L16
:
2913 case R_C6000_ABS_H16
:
2914 /* If we are creating a shared library, and this is a reloc
2915 against a global symbol, or a non PC relative reloc
2916 against a local symbol, then we need to copy the reloc
2917 into the shared library. However, if we are linking with
2918 -Bsymbolic, we do not need to copy a reloc against a
2919 global symbol which is defined in an object we are
2920 including in the link (i.e., DEF_REGULAR is set). At
2921 this point we have not seen all the input files, so it is
2922 possible that DEF_REGULAR is not set now but will be set
2923 later (it is never cleared). In case of a weak definition,
2924 DEF_REGULAR may be cleared later by a strong definition in
2925 a shared library. We account for that possibility below by
2926 storing information in the relocs_copied field of the hash
2927 table entry. A similar situation occurs when creating
2928 shared libraries and symbol visibility changes render the
2931 If on the other hand, we are creating an executable, we
2932 may need to keep relocations for symbols satisfied by a
2933 dynamic library if we manage to avoid copy relocs for the
2935 if ((bfd_link_pic (info
) || elf32_tic6x_using_dsbt (abfd
))
2936 && (sec
->flags
& SEC_ALLOC
) != 0)
2938 struct elf_dyn_relocs
*p
;
2939 struct elf_dyn_relocs
**head
;
2941 /* We must copy these reloc types into the output file.
2942 Create a reloc section in dynobj and make room for
2946 if (htab
->elf
.dynobj
== NULL
)
2947 htab
->elf
.dynobj
= abfd
;
2949 sreloc
= _bfd_elf_make_dynamic_reloc_section
2950 (sec
, htab
->elf
.dynobj
, 2, abfd
, /*rela? */ TRUE
);
2956 /* If this is a global symbol, we count the number of
2957 relocations we need for this symbol. */
2960 head
= &((struct elf32_tic6x_link_hash_entry
*) h
)->dyn_relocs
;
2964 /* Track dynamic relocs needed for local syms too.
2965 We really need local syms available to do this
2970 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
2974 vpp
= &elf_section_data (s
)->local_dynrel
;
2975 head
= (struct elf_dyn_relocs
**)vpp
;
2979 if (p
== NULL
|| p
->sec
!= sec
)
2981 bfd_size_type amt
= sizeof *p
;
2982 p
= bfd_alloc (htab
->elf
.dynobj
, amt
);
2993 if (r_type
== R_C6000_DSBT_INDEX
)
2998 case R_C6000_SBR_U15_B
:
2999 case R_C6000_SBR_U15_H
:
3000 case R_C6000_SBR_U15_W
:
3001 case R_C6000_SBR_S16
:
3002 case R_C6000_SBR_L16_B
:
3003 case R_C6000_SBR_L16_H
:
3004 case R_C6000_SBR_L16_W
:
3005 case R_C6000_SBR_H16_B
:
3006 case R_C6000_SBR_H16_H
:
3007 case R_C6000_SBR_H16_W
:
3008 if (h
!= NULL
&& bfd_link_executable (info
))
3010 /* For B14-relative addresses, we might need a copy
3025 elf32_tic6x_add_symbol_hook (bfd
*abfd
,
3026 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3027 Elf_Internal_Sym
*sym
,
3028 const char **namep ATTRIBUTE_UNUSED
,
3029 flagword
*flagsp ATTRIBUTE_UNUSED
,
3033 switch (sym
->st_shndx
)
3035 case SHN_TIC6X_SCOMMON
:
3036 *secp
= bfd_make_section_old_way (abfd
, ".scommon");
3037 (*secp
)->flags
|= SEC_IS_COMMON
;
3038 *valp
= sym
->st_size
;
3039 (void) bfd_set_section_alignment (abfd
, *secp
, bfd_log2 (sym
->st_value
));
3047 elf32_tic6x_symbol_processing (bfd
*abfd ATTRIBUTE_UNUSED
, asymbol
*asym
)
3049 elf_symbol_type
*elfsym
;
3051 elfsym
= (elf_symbol_type
*) asym
;
3052 switch (elfsym
->internal_elf_sym
.st_shndx
)
3054 case SHN_TIC6X_SCOMMON
:
3055 if (tic6x_elf_scom_section
.name
== NULL
)
3057 /* Initialize the small common section. */
3058 tic6x_elf_scom_section
.name
= ".scommon";
3059 tic6x_elf_scom_section
.flags
= SEC_IS_COMMON
;
3060 tic6x_elf_scom_section
.output_section
= &tic6x_elf_scom_section
;
3061 tic6x_elf_scom_section
.symbol
= &tic6x_elf_scom_symbol
;
3062 tic6x_elf_scom_section
.symbol_ptr_ptr
= &tic6x_elf_scom_symbol_ptr
;
3063 tic6x_elf_scom_symbol
.name
= ".scommon";
3064 tic6x_elf_scom_symbol
.flags
= BSF_SECTION_SYM
;
3065 tic6x_elf_scom_symbol
.section
= &tic6x_elf_scom_section
;
3066 tic6x_elf_scom_symbol_ptr
= &tic6x_elf_scom_symbol
;
3068 asym
->section
= &tic6x_elf_scom_section
;
3069 asym
->value
= elfsym
->internal_elf_sym
.st_size
;
3075 elf32_tic6x_link_output_symbol_hook (struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3076 const char *name ATTRIBUTE_UNUSED
,
3077 Elf_Internal_Sym
*sym
,
3078 asection
*input_sec
,
3079 struct elf_link_hash_entry
*h ATTRIBUTE_UNUSED
)
3081 /* If we see a common symbol, which implies a relocatable link, then
3082 if a symbol was small common in an input file, mark it as small
3083 common in the output file. */
3084 if (sym
->st_shndx
== SHN_COMMON
&& strcmp (input_sec
->name
, ".scommon") == 0)
3085 sym
->st_shndx
= SHN_TIC6X_SCOMMON
;
3091 elf32_tic6x_section_from_bfd_section (bfd
*abfd ATTRIBUTE_UNUSED
,
3095 if (strcmp (bfd_get_section_name (abfd
, sec
), ".scommon") == 0)
3097 *retval
= SHN_TIC6X_SCOMMON
;
3104 /* Allocate space in .plt, .got and associated reloc sections for
3108 elf32_tic6x_allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
3110 struct bfd_link_info
*info
;
3111 struct elf32_tic6x_link_hash_table
*htab
;
3112 struct elf32_tic6x_link_hash_entry
*eh
;
3113 struct elf_dyn_relocs
*p
;
3115 if (h
->root
.type
== bfd_link_hash_indirect
)
3118 eh
= (struct elf32_tic6x_link_hash_entry
*) h
;
3119 info
= (struct bfd_link_info
*) inf
;
3120 htab
= elf32_tic6x_hash_table (info
);
3122 if (htab
->elf
.dynamic_sections_created
&& h
->plt
.refcount
> 0)
3124 /* Make sure this symbol is output as a dynamic symbol.
3125 Undefined weak syms won't yet be marked as dynamic. */
3126 if (h
->dynindx
== -1 && !h
->forced_local
)
3128 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
3132 if (bfd_link_pic (info
)
3133 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
3135 asection
*s
= htab
->elf
.splt
;
3137 /* If this is the first .plt entry, make room for the special
3140 s
->size
+= PLT_ENTRY_SIZE
;
3142 h
->plt
.offset
= s
->size
;
3144 /* If this symbol is not defined in a regular file, and we are
3145 not generating a shared library, then set the symbol to this
3146 location in the .plt. This is required to make function
3147 pointers compare as equal between the normal executable and
3148 the shared library. */
3149 if (! bfd_link_pic (info
) && !h
->def_regular
)
3151 h
->root
.u
.def
.section
= s
;
3152 h
->root
.u
.def
.value
= h
->plt
.offset
;
3155 /* Make room for this entry. */
3156 s
->size
+= PLT_ENTRY_SIZE
;
3157 /* We also need to make an entry in the .got.plt section, which
3158 will be placed in the .got section by the linker script. */
3159 htab
->elf
.sgotplt
->size
+= 4;
3160 /* We also need to make an entry in the .rel.plt section. */
3161 htab
->elf
.srelplt
->size
+= sizeof (Elf32_External_Rela
);
3165 h
->plt
.offset
= (bfd_vma
) -1;
3171 h
->plt
.offset
= (bfd_vma
) -1;
3175 if (h
->got
.refcount
> 0)
3179 /* Make sure this symbol is output as a dynamic symbol.
3180 Undefined weak syms won't yet be marked as dynamic. */
3181 if (h
->dynindx
== -1
3182 && !h
->forced_local
)
3184 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
3189 h
->got
.offset
= s
->size
;
3192 if (!(ELF_ST_VISIBILITY (h
->other
)
3193 && h
->root
.type
== bfd_link_hash_undefweak
))
3194 htab
->elf
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
3197 h
->got
.offset
= (bfd_vma
) -1;
3199 if (eh
->dyn_relocs
== NULL
)
3202 /* Discard relocs on undefined weak syms with non-default
3204 if (bfd_link_pic (info
) || elf32_tic6x_using_dsbt (htab
->obfd
))
3206 /* We use the pc_count field to hold the number of
3207 R_C6000_DSBT_INDEX relocs. */
3208 if (htab
->params
.dsbt_index
!= 0)
3210 struct elf_dyn_relocs
**pp
;
3212 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
3214 p
->count
-= p
->pc_count
;
3223 if (eh
->dyn_relocs
!= NULL
3224 && h
->root
.type
== bfd_link_hash_undefweak
)
3226 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
3227 eh
->dyn_relocs
= NULL
;
3229 /* Make sure undefined weak symbols are output as a dynamic
3231 else if (h
->dynindx
== -1
3232 && !h
->forced_local
)
3234 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
3240 /* Finally, allocate space. */
3241 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
3245 sreloc
= elf_section_data (p
->sec
)->sreloc
;
3247 BFD_ASSERT (sreloc
!= NULL
);
3248 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
3254 /* Find any dynamic relocs that apply to read-only sections. */
3257 elf32_tic6x_readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
3259 struct elf32_tic6x_link_hash_entry
*eh
;
3260 struct elf_dyn_relocs
*p
;
3262 eh
= (struct elf32_tic6x_link_hash_entry
*) h
;
3263 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
3265 asection
*s
= p
->sec
->output_section
;
3267 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
3269 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
3271 info
->flags
|= DF_TEXTREL
;
3273 /* Not an error, just cut short the traversal. */
3280 /* Set the sizes of the dynamic sections. */
3283 elf32_tic6x_size_dynamic_sections (bfd
*output_bfd
, struct bfd_link_info
*info
)
3285 struct elf32_tic6x_link_hash_table
*htab
;
3291 htab
= elf32_tic6x_hash_table (info
);
3292 dynobj
= htab
->elf
.dynobj
;
3296 if (htab
->elf
.dynamic_sections_created
)
3298 /* Set the contents of the .interp section to the interpreter. */
3299 if (bfd_link_executable (info
) && !info
->nointerp
)
3301 s
= bfd_get_linker_section (dynobj
, ".interp");
3304 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
3305 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
3309 /* Set up .got offsets for local syms, and space for local dynamic
3311 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
3313 bfd_signed_vma
*local_got
;
3314 bfd_signed_vma
*end_local_got
;
3315 bfd_size_type locsymcount
;
3316 Elf_Internal_Shdr
*symtab_hdr
;
3319 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
3321 struct elf_dyn_relocs
*p
;
3323 for (p
= ((struct elf_dyn_relocs
*)
3324 elf_section_data (s
)->local_dynrel
);
3328 if (!bfd_is_abs_section (p
->sec
)
3329 && bfd_is_abs_section (p
->sec
->output_section
))
3331 /* Input section has been discarded, either because
3332 it is a copy of a linkonce section or due to
3333 linker script /DISCARD/, so we'll be discarding
3336 else if (p
->count
!= 0)
3338 srel
= elf_section_data (p
->sec
)->sreloc
;
3339 srel
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
3340 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
3341 info
->flags
|= DF_TEXTREL
;
3346 local_got
= elf_local_got_refcounts (ibfd
);
3350 symtab_hdr
= &elf_symtab_hdr (ibfd
);
3351 locsymcount
= symtab_hdr
->sh_info
;
3352 end_local_got
= local_got
+ locsymcount
;
3354 srel
= htab
->elf
.srelgot
;
3355 for (; local_got
< end_local_got
; ++local_got
)
3359 *local_got
= s
->size
;
3362 if (bfd_link_pic (info
) || elf32_tic6x_using_dsbt (output_bfd
))
3364 srel
->size
+= sizeof (Elf32_External_Rela
);
3368 *local_got
= (bfd_vma
) -1;
3372 /* Allocate global sym .plt and .got entries, and space for global
3373 sym dynamic relocs. */
3374 elf_link_hash_traverse (&htab
->elf
, elf32_tic6x_allocate_dynrelocs
, info
);
3376 /* We now have determined the sizes of the various dynamic sections.
3377 Allocate memory for them. */
3379 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
3381 bfd_boolean strip_section
= TRUE
;
3383 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
3386 if (s
== htab
->dsbt
)
3387 s
->size
= 4 * htab
->params
.dsbt_size
;
3388 else if (s
== htab
->elf
.splt
3389 || s
== htab
->elf
.sgot
3390 || s
== htab
->elf
.sgotplt
3391 || s
== htab
->sdynbss
)
3393 /* Strip this section if we don't need it; see the
3395 /* We'd like to strip these sections if they aren't needed, but if
3396 we've exported dynamic symbols from them we must leave them.
3397 It's too late to tell BFD to get rid of the symbols. */
3399 if (htab
->elf
.hplt
!= NULL
)
3400 strip_section
= FALSE
;
3402 /* Round up the size of the PLT section to a multiple of 32. */
3403 if (s
== htab
->elf
.splt
&& s
->size
> 0)
3404 s
->size
= (s
->size
+ 31) & ~(bfd_vma
)31;
3406 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
3409 && s
!= htab
->elf
.srelplt
)
3412 /* We use the reloc_count field as a counter if we need
3413 to copy relocs into the output file. */
3418 /* It's not one of our sections, so don't allocate space. */
3424 /* If we don't need this section, strip it from the
3425 output file. This is mostly to handle .rel.bss and
3426 .rel.plt. We must create both sections in
3427 create_dynamic_sections, because they must be created
3428 before the linker maps input sections to output
3429 sections. The linker does that before
3430 adjust_dynamic_symbol is called, and it is that
3431 function which decides whether anything needs to go
3432 into these sections. */
3434 s
->flags
|= SEC_EXCLUDE
;
3438 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
3441 /* Allocate memory for the section contents. We use bfd_zalloc
3442 here in case unused entries are not reclaimed before the
3443 section's contents are written out. This should not happen,
3444 but this way if it does, we get a R_C6000_NONE reloc instead
3446 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
3447 if (s
->contents
== NULL
)
3451 if (htab
->elf
.dynamic_sections_created
)
3453 /* Add some entries to the .dynamic section. We fill in the
3454 values later, in elf32_tic6x_finish_dynamic_sections, but we
3455 must add the entries now so that we get the correct size for
3456 the .dynamic section. The DT_DEBUG entry is filled in by the
3457 dynamic linker and used by the debugger. */
3458 #define add_dynamic_entry(TAG, VAL) \
3459 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3461 if (bfd_link_executable (info
))
3463 if (!add_dynamic_entry (DT_DEBUG
, 0))
3467 if (!add_dynamic_entry (DT_C6000_DSBT_BASE
, 0)
3468 || !add_dynamic_entry (DT_C6000_DSBT_SIZE
, htab
->params
.dsbt_size
)
3469 || !add_dynamic_entry (DT_C6000_DSBT_INDEX
,
3470 htab
->params
.dsbt_index
))
3473 if (htab
->elf
.splt
->size
!= 0)
3475 if (!add_dynamic_entry (DT_PLTGOT
, 0)
3476 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
3477 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
3478 || !add_dynamic_entry (DT_JMPREL
, 0))
3484 if (!add_dynamic_entry (DT_RELA
, 0)
3485 || !add_dynamic_entry (DT_RELASZ
, 0)
3486 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
3489 /* If any dynamic relocs apply to a read-only section,
3490 then we need a DT_TEXTREL entry. */
3491 if ((info
->flags
& DF_TEXTREL
) == 0)
3492 elf_link_hash_traverse (&htab
->elf
,
3493 elf32_tic6x_readonly_dynrelocs
, info
);
3495 if ((info
->flags
& DF_TEXTREL
) != 0)
3497 if (!add_dynamic_entry (DT_TEXTREL
, 0))
3502 #undef add_dynamic_entry
3507 /* This function is called after all the input files have been read,
3508 and the input sections have been assigned to output sections. */
3511 elf32_tic6x_always_size_sections (bfd
*output_bfd
, struct bfd_link_info
*info
)
3513 if (elf32_tic6x_using_dsbt (output_bfd
) && !bfd_link_relocatable (info
)
3514 && !bfd_elf_stack_segment_size (output_bfd
, info
,
3515 "__stacksize", DEFAULT_STACK_SIZE
))
3522 elf32_tic6x_finish_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
3523 struct bfd_link_info
*info
)
3525 struct elf32_tic6x_link_hash_table
*htab
;
3529 htab
= elf32_tic6x_hash_table (info
);
3530 dynobj
= htab
->elf
.dynobj
;
3531 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
3533 if (elf_hash_table (info
)->dynamic_sections_created
)
3535 Elf32_External_Dyn
* dyncon
;
3536 Elf32_External_Dyn
* dynconend
;
3538 BFD_ASSERT (sdyn
!= NULL
);
3540 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
3541 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
3543 for (; dyncon
< dynconend
; dyncon
++)
3545 Elf_Internal_Dyn dyn
;
3548 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
3555 case DT_C6000_DSBT_BASE
:
3557 dyn
.d_un
.d_ptr
= (s
->output_section
->vma
+ s
->output_offset
);
3561 s
= htab
->elf
.sgotplt
;
3562 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
3566 s
= htab
->elf
.srelplt
;
3567 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
3571 s
= htab
->elf
.srelplt
;
3572 dyn
.d_un
.d_val
= s
->size
;
3575 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3578 /* Fill in the first entry in the procedure linkage table. */
3579 if (htab
->elf
.splt
&& htab
->elf
.splt
->size
> 0)
3581 bfd_vma got_offs
= (htab
->elf
.sgotplt
->output_section
->vma
3582 + htab
->elf
.sgotplt
->output_offset
3583 - htab
->dsbt
->output_section
->vma
3584 - htab
->dsbt
->output_offset
) / 4;
3586 /* ldw .D2T2 *+b14[$GOT(0)],b2 */
3587 bfd_put_32 (output_bfd
, got_offs
<< 8 | 0x0100006e,
3588 htab
->elf
.splt
->contents
);
3589 /* ldw .D2T2 *+b14[$GOT(4)],b1 */
3590 bfd_put_32 (output_bfd
, (got_offs
+ 1) << 8 | 0x0080006e,
3591 htab
->elf
.splt
->contents
+ 4);
3593 bfd_put_32 (output_bfd
, 0x00004000,
3594 htab
->elf
.splt
->contents
+ 8);
3596 bfd_put_32 (output_bfd
, 0x00080362,
3597 htab
->elf
.splt
->contents
+ 12);
3599 bfd_put_32 (output_bfd
, 0x00008000,
3600 htab
->elf
.splt
->contents
+ 16);
3602 elf_section_data (htab
->elf
.splt
->output_section
)
3603 ->this_hdr
.sh_entsize
= PLT_ENTRY_SIZE
;
3610 /* Return address for Ith PLT stub in section PLT, for relocation REL
3611 or (bfd_vma) -1 if it should not be included. */
3614 elf32_tic6x_plt_sym_val (bfd_vma i
, const asection
*plt
,
3615 const arelent
*rel ATTRIBUTE_UNUSED
)
3617 return plt
->vma
+ (i
+ 1) * PLT_ENTRY_SIZE
;
3621 elf32_tic6x_obj_attrs_arg_type (int tag
)
3623 if (tag
== Tag_ABI_compatibility
)
3624 return ATTR_TYPE_FLAG_INT_VAL
| ATTR_TYPE_FLAG_STR_VAL
;
3626 return ATTR_TYPE_FLAG_STR_VAL
;
3628 return ATTR_TYPE_FLAG_INT_VAL
;
3632 elf32_tic6x_obj_attrs_order (int num
)
3634 if (num
== LEAST_KNOWN_OBJ_ATTRIBUTE
)
3635 return Tag_ABI_conformance
;
3636 if ((num
- 1) < Tag_ABI_conformance
)
3642 elf32_tic6x_obj_attrs_handle_unknown (bfd
*abfd
, int tag
)
3644 if ((tag
& 127) < 64)
3647 /* xgettext:c-format */
3648 (_("%B: error: unknown mandatory EABI object attribute %d"),
3650 bfd_set_error (bfd_error_bad_value
);
3656 /* xgettext:c-format */
3657 (_("%B: warning: unknown EABI object attribute %d"),
3663 /* Merge the Tag_ISA attribute values ARCH1 and ARCH2
3664 and return the merged value. At present, all merges succeed, so no
3665 return value for errors is defined. */
3668 elf32_tic6x_merge_arch_attributes (int arch1
, int arch2
)
3670 int min_arch
, max_arch
;
3672 min_arch
= (arch1
< arch2
? arch1
: arch2
);
3673 max_arch
= (arch1
> arch2
? arch1
: arch2
);
3675 /* In most cases, the numerically greatest value is the correct
3676 merged value, but merging C64 and C67 results in C674X. */
3677 if ((min_arch
== C6XABI_Tag_ISA_C67X
3678 || min_arch
== C6XABI_Tag_ISA_C67XP
)
3679 && (max_arch
== C6XABI_Tag_ISA_C64X
3680 || max_arch
== C6XABI_Tag_ISA_C64XP
))
3681 return C6XABI_Tag_ISA_C674X
;
3686 /* Convert a Tag_ABI_array_object_alignment or
3687 Tag_ABI_array_object_align_expected tag value TAG to a
3688 corresponding alignment value; return the alignment, or -1 for an
3689 unknown tag value. */
3692 elf32_tic6x_tag_to_array_alignment (int tag
)
3710 /* Convert a Tag_ABI_array_object_alignment or
3711 Tag_ABI_array_object_align_expected alignment ALIGN to a
3712 corresponding tag value; return the tag value. */
3715 elf32_tic6x_array_alignment_to_tag (int align
)
3733 /* Merge attributes from IBFD and OBFD, returning TRUE if the merge
3734 succeeded, FALSE otherwise. */
3737 elf32_tic6x_merge_attributes (bfd
*ibfd
, struct bfd_link_info
*info
)
3739 bfd
*obfd
= info
->output_bfd
;
3740 bfd_boolean result
= TRUE
;
3741 obj_attribute
*in_attr
;
3742 obj_attribute
*out_attr
;
3744 int array_align_in
, array_align_out
, array_expect_in
, array_expect_out
;
3746 if (!elf_known_obj_attributes_proc (obfd
)[0].i
)
3748 /* This is the first object. Copy the attributes. */
3749 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
3751 out_attr
= elf_known_obj_attributes_proc (obfd
);
3753 /* Use the Tag_null value to indicate the attributes have been
3760 in_attr
= elf_known_obj_attributes_proc (ibfd
);
3761 out_attr
= elf_known_obj_attributes_proc (obfd
);
3763 /* No specification yet for handling of unknown attributes, so just
3764 ignore them and handle known ones. */
3766 if (out_attr
[Tag_ABI_stack_align_preserved
].i
3767 < in_attr
[Tag_ABI_stack_align_needed
].i
)
3770 /* xgettext:c-format */
3771 (_("error: %B requires more stack alignment than %B preserves"),
3775 if (in_attr
[Tag_ABI_stack_align_preserved
].i
3776 < out_attr
[Tag_ABI_stack_align_needed
].i
)
3779 /* xgettext:c-format */
3780 (_("error: %B requires more stack alignment than %B preserves"),
3785 array_align_in
= elf32_tic6x_tag_to_array_alignment
3786 (in_attr
[Tag_ABI_array_object_alignment
].i
);
3787 if (array_align_in
== -1)
3790 (_("error: unknown Tag_ABI_array_object_alignment value in %B"),
3794 array_align_out
= elf32_tic6x_tag_to_array_alignment
3795 (out_attr
[Tag_ABI_array_object_alignment
].i
);
3796 if (array_align_out
== -1)
3799 (_("error: unknown Tag_ABI_array_object_alignment value in %B"),
3803 array_expect_in
= elf32_tic6x_tag_to_array_alignment
3804 (in_attr
[Tag_ABI_array_object_align_expected
].i
);
3805 if (array_expect_in
== -1)
3808 (_("error: unknown Tag_ABI_array_object_align_expected value in %B"),
3812 array_expect_out
= elf32_tic6x_tag_to_array_alignment
3813 (out_attr
[Tag_ABI_array_object_align_expected
].i
);
3814 if (array_expect_out
== -1)
3817 (_("error: unknown Tag_ABI_array_object_align_expected value in %B"),
3822 if (array_align_out
< array_expect_in
)
3825 /* xgettext:c-format */
3826 (_("error: %B requires more array alignment than %B preserves"),
3830 if (array_align_in
< array_expect_out
)
3833 /* xgettext:c-format */
3834 (_("error: %B requires more array alignment than %B preserves"),
3839 for (i
= LEAST_KNOWN_OBJ_ATTRIBUTE
; i
< NUM_KNOWN_OBJ_ATTRIBUTES
; i
++)
3844 out_attr
[i
].i
= elf32_tic6x_merge_arch_attributes (in_attr
[i
].i
,
3848 case Tag_ABI_wchar_t
:
3849 if (out_attr
[i
].i
== 0)
3850 out_attr
[i
].i
= in_attr
[i
].i
;
3851 if (out_attr
[i
].i
!= 0
3852 && in_attr
[i
].i
!= 0
3853 && out_attr
[i
].i
!= in_attr
[i
].i
)
3856 /* xgettext:c-format */
3857 (_("warning: %B and %B differ in wchar_t size"), obfd
, ibfd
);
3861 case Tag_ABI_stack_align_needed
:
3862 if (out_attr
[i
].i
< in_attr
[i
].i
)
3863 out_attr
[i
].i
= in_attr
[i
].i
;
3866 case Tag_ABI_stack_align_preserved
:
3867 if (out_attr
[i
].i
> in_attr
[i
].i
)
3868 out_attr
[i
].i
= in_attr
[i
].i
;
3872 if (out_attr
[i
].i
!= in_attr
[i
].i
)
3875 /* xgettext:c-format */
3876 (_("warning: %B and %B differ in whether code is "
3877 "compiled for DSBT"),
3884 if (out_attr
[i
].i
> in_attr
[i
].i
)
3885 out_attr
[i
].i
= in_attr
[i
].i
;
3888 case Tag_ABI_array_object_alignment
:
3889 if (array_align_out
!= -1
3890 && array_align_in
!= -1
3891 && array_align_out
> array_align_in
)
3893 = elf32_tic6x_array_alignment_to_tag (array_align_in
);
3896 case Tag_ABI_array_object_align_expected
:
3897 if (array_expect_out
!= -1
3898 && array_expect_in
!= -1
3899 && array_expect_out
< array_expect_in
)
3901 = elf32_tic6x_array_alignment_to_tag (array_expect_in
);
3904 case Tag_ABI_conformance
:
3905 /* Merging for this attribute is not specified. As on ARM,
3906 treat a missing attribute as no claim to conform and only
3907 merge identical values. */
3908 if (out_attr
[i
].s
== NULL
3909 || in_attr
[i
].s
== NULL
3910 || strcmp (out_attr
[i
].s
,
3912 out_attr
[i
].s
= NULL
;
3915 case Tag_ABI_compatibility
:
3916 /* Merged in _bfd_elf_merge_object_attributes. */
3921 = result
&& _bfd_elf_merge_unknown_attribute_low (ibfd
, obfd
, i
);
3925 if (in_attr
[i
].type
&& !out_attr
[i
].type
)
3926 out_attr
[i
].type
= in_attr
[i
].type
;
3929 /* Merge Tag_ABI_compatibility attributes and any common GNU ones. */
3930 if (!_bfd_elf_merge_object_attributes (ibfd
, info
))
3933 result
&= _bfd_elf_merge_unknown_attribute_list (ibfd
, obfd
);
3939 elf32_tic6x_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
3941 if (!_bfd_generic_verify_endian_match (ibfd
, info
))
3944 if (! is_tic6x_elf (ibfd
) || ! is_tic6x_elf (info
->output_bfd
))
3947 if (!elf32_tic6x_merge_attributes (ibfd
, info
))
3953 /* Add a new unwind edit to the list described by HEAD, TAIL. If TINDEX is zero,
3954 adds the edit to the start of the list. (The list must be built in order of
3955 ascending TINDEX: the function's callers are primarily responsible for
3956 maintaining that condition). */
3959 elf32_tic6x_add_unwind_table_edit (tic6x_unwind_table_edit
**head
,
3960 tic6x_unwind_table_edit
**tail
,
3961 tic6x_unwind_edit_type type
,
3962 asection
*linked_section
,
3963 unsigned int tindex
)
3965 tic6x_unwind_table_edit
*new_edit
= (tic6x_unwind_table_edit
*)
3966 xmalloc (sizeof (tic6x_unwind_table_edit
));
3968 new_edit
->type
= type
;
3969 new_edit
->linked_section
= linked_section
;
3970 new_edit
->index
= tindex
;
3974 new_edit
->next
= NULL
;
3977 (*tail
)->next
= new_edit
;
3986 new_edit
->next
= *head
;
3995 static _tic6x_elf_section_data
*
3996 get_tic6x_elf_section_data (asection
* sec
)
3998 if (sec
&& sec
->owner
&& is_tic6x_elf (sec
->owner
))
3999 return elf32_tic6x_section_data (sec
);
4005 /* Increase the size of EXIDX_SEC by ADJUST bytes. ADJUST must be negative. */
4007 elf32_tic6x_adjust_exidx_size (asection
*exidx_sec
, int adjust
)
4011 if (!exidx_sec
->rawsize
)
4012 exidx_sec
->rawsize
= exidx_sec
->size
;
4014 bfd_set_section_size (exidx_sec
->owner
, exidx_sec
, exidx_sec
->size
+ adjust
);
4015 out_sec
= exidx_sec
->output_section
;
4016 /* Adjust size of output section. */
4017 bfd_set_section_size (out_sec
->owner
, out_sec
, out_sec
->size
+adjust
);
4020 /* Insert an EXIDX_CANTUNWIND marker at the end of a section. */
4022 elf32_tic6x_insert_cantunwind_after (asection
*text_sec
, asection
*exidx_sec
)
4024 struct _tic6x_elf_section_data
*exidx_data
;
4026 exidx_data
= get_tic6x_elf_section_data (exidx_sec
);
4027 elf32_tic6x_add_unwind_table_edit (
4028 &exidx_data
->u
.exidx
.unwind_edit_list
,
4029 &exidx_data
->u
.exidx
.unwind_edit_tail
,
4030 INSERT_EXIDX_CANTUNWIND_AT_END
, text_sec
, UINT_MAX
);
4032 elf32_tic6x_adjust_exidx_size (exidx_sec
, 8);
4035 /* Scan .cx6abi.exidx tables, and create a list describing edits which
4036 should be made to those tables, such that:
4038 1. Regions without unwind data are marked with EXIDX_CANTUNWIND entries.
4039 2. Duplicate entries are merged together (EXIDX_CANTUNWIND, or unwind
4040 codes which have been inlined into the index).
4042 If MERGE_EXIDX_ENTRIES is false, duplicate entries are not merged.
4044 The edits are applied when the tables are written
4045 (in elf32_tic6x_write_section).
4049 elf32_tic6x_fix_exidx_coverage (asection
**text_section_order
,
4050 unsigned int num_text_sections
,
4051 struct bfd_link_info
*info
,
4052 bfd_boolean merge_exidx_entries
)
4055 unsigned int last_second_word
= 0, i
;
4056 asection
*last_exidx_sec
= NULL
;
4057 asection
*last_text_sec
= NULL
;
4058 int last_unwind_type
= -1;
4060 /* Walk over all EXIDX sections, and create backlinks from the corrsponding
4062 for (inp
= info
->input_bfds
; inp
!= NULL
; inp
= inp
->link
.next
)
4066 for (sec
= inp
->sections
; sec
!= NULL
; sec
= sec
->next
)
4068 struct bfd_elf_section_data
*elf_sec
= elf_section_data (sec
);
4069 Elf_Internal_Shdr
*hdr
= &elf_sec
->this_hdr
;
4071 if (!hdr
|| hdr
->sh_type
!= SHT_C6000_UNWIND
)
4074 if (elf_sec
->linked_to
)
4076 Elf_Internal_Shdr
*linked_hdr
4077 = &elf_section_data (elf_sec
->linked_to
)->this_hdr
;
4078 struct _tic6x_elf_section_data
*linked_sec_tic6x_data
4079 = get_tic6x_elf_section_data (linked_hdr
->bfd_section
);
4081 if (linked_sec_tic6x_data
== NULL
)
4084 /* Link this .c6xabi.exidx section back from the
4085 text section it describes. */
4086 linked_sec_tic6x_data
->u
.text
.tic6x_exidx_sec
= sec
;
4091 /* Walk all text sections in order of increasing VMA. Eilminate duplicate
4092 index table entries (EXIDX_CANTUNWIND and inlined unwind opcodes),
4093 and add EXIDX_CANTUNWIND entries for sections with no unwind table data. */
4095 for (i
= 0; i
< num_text_sections
; i
++)
4097 asection
*sec
= text_section_order
[i
];
4098 asection
*exidx_sec
;
4099 struct _tic6x_elf_section_data
*tic6x_data
4100 = get_tic6x_elf_section_data (sec
);
4101 struct _tic6x_elf_section_data
*exidx_data
;
4102 bfd_byte
*contents
= NULL
;
4103 int deleted_exidx_bytes
= 0;
4105 tic6x_unwind_table_edit
*unwind_edit_head
= NULL
;
4106 tic6x_unwind_table_edit
*unwind_edit_tail
= NULL
;
4107 Elf_Internal_Shdr
*hdr
;
4110 if (tic6x_data
== NULL
)
4113 exidx_sec
= tic6x_data
->u
.text
.tic6x_exidx_sec
;
4114 if (exidx_sec
== NULL
)
4116 /* Section has no unwind data. */
4117 if (last_unwind_type
== 0 || !last_exidx_sec
)
4120 /* Ignore zero sized sections. */
4124 elf32_tic6x_insert_cantunwind_after (last_text_sec
, last_exidx_sec
);
4125 last_unwind_type
= 0;
4129 /* Skip /DISCARD/ sections. */
4130 if (bfd_is_abs_section (exidx_sec
->output_section
))
4133 hdr
= &elf_section_data (exidx_sec
)->this_hdr
;
4134 if (hdr
->sh_type
!= SHT_C6000_UNWIND
)
4137 exidx_data
= get_tic6x_elf_section_data (exidx_sec
);
4138 if (exidx_data
== NULL
)
4141 ibfd
= exidx_sec
->owner
;
4143 if (hdr
->contents
!= NULL
)
4144 contents
= hdr
->contents
;
4145 else if (! bfd_malloc_and_get_section (ibfd
, exidx_sec
, &contents
))
4149 for (j
= 0; j
< hdr
->sh_size
; j
+= 8)
4151 unsigned int second_word
= bfd_get_32 (ibfd
, contents
+ j
+ 4);
4155 /* An EXIDX_CANTUNWIND entry. */
4156 if (second_word
== 1)
4158 if (last_unwind_type
== 0)
4162 /* Inlined unwinding data. Merge if equal to previous. */
4163 else if ((second_word
& 0x80000000) != 0)
4165 if (merge_exidx_entries
4166 && last_second_word
== second_word
4167 && last_unwind_type
== 1)
4170 last_second_word
= second_word
;
4172 /* Normal table entry. In theory we could merge these too,
4173 but duplicate entries are likely to be much less common. */
4179 elf32_tic6x_add_unwind_table_edit (&unwind_edit_head
,
4180 &unwind_edit_tail
, DELETE_EXIDX_ENTRY
, NULL
, j
/ 8);
4182 deleted_exidx_bytes
+= 8;
4185 last_unwind_type
= unwind_type
;
4188 /* Free contents if we allocated it ourselves. */
4189 if (contents
!= hdr
->contents
)
4192 /* Record edits to be applied later (in elf32_tic6x_write_section). */
4193 exidx_data
->u
.exidx
.unwind_edit_list
= unwind_edit_head
;
4194 exidx_data
->u
.exidx
.unwind_edit_tail
= unwind_edit_tail
;
4196 if (deleted_exidx_bytes
> 0)
4197 elf32_tic6x_adjust_exidx_size (exidx_sec
, -deleted_exidx_bytes
);
4199 last_exidx_sec
= exidx_sec
;
4200 last_text_sec
= sec
;
4203 /* Add terminating CANTUNWIND entry. */
4204 if (last_exidx_sec
&& last_unwind_type
!= 0)
4205 elf32_tic6x_insert_cantunwind_after (last_text_sec
, last_exidx_sec
);
4210 /* Add ADDEND to lower 31 bits of VAL, leaving other bits unmodified. */
4212 static unsigned long
4213 elf32_tic6x_add_low31 (unsigned long val
, bfd_vma addend
)
4215 return (val
& ~0x7ffffffful
) | ((val
+ addend
) & 0x7ffffffful
);
4218 /* Copy an .c6xabi.exidx table entry, adding OFFSET to (applied) PREL31
4219 relocations. OFFSET is in bytes, and will be scaled before encoding. */
4223 elf32_tic6x_copy_exidx_entry (bfd
*output_bfd
, bfd_byte
*to
, bfd_byte
*from
,
4226 unsigned long first_word
= bfd_get_32 (output_bfd
, from
);
4227 unsigned long second_word
= bfd_get_32 (output_bfd
, from
+ 4);
4230 /* High bit of first word is supposed to be zero. */
4231 if ((first_word
& 0x80000000ul
) == 0)
4232 first_word
= elf32_tic6x_add_low31 (first_word
, offset
);
4234 /* If the high bit of the first word is clear, and the bit pattern is not 0x1
4235 (EXIDX_CANTUNWIND), this is an offset to an .c6xabi.extab entry. */
4236 if ((second_word
!= 0x1) && ((second_word
& 0x80000000ul
) == 0))
4237 second_word
= elf32_tic6x_add_low31 (second_word
, offset
);
4239 bfd_put_32 (output_bfd
, first_word
, to
);
4240 bfd_put_32 (output_bfd
, second_word
, to
+ 4);
4243 /* Do the actual mangling of exception index tables. */
4246 elf32_tic6x_write_section (bfd
*output_bfd
,
4247 struct bfd_link_info
*link_info
,
4251 _tic6x_elf_section_data
*tic6x_data
;
4252 struct elf32_tic6x_link_hash_table
*globals
4253 = elf32_tic6x_hash_table (link_info
);
4254 bfd_vma offset
= sec
->output_section
->vma
+ sec
->output_offset
;
4256 if (globals
== NULL
)
4259 /* If this section has not been allocated an _tic6x_elf_section_data
4260 structure then we cannot record anything. */
4261 tic6x_data
= get_tic6x_elf_section_data (sec
);
4262 if (tic6x_data
== NULL
)
4265 if (tic6x_data
->elf
.this_hdr
.sh_type
!= SHT_C6000_UNWIND
)
4268 tic6x_unwind_table_edit
*edit_node
4269 = tic6x_data
->u
.exidx
.unwind_edit_list
;
4270 /* Now, sec->size is the size of the section we will write. The original
4271 size (before we merged duplicate entries and inserted EXIDX_CANTUNWIND
4272 markers) was sec->rawsize. (This isn't the case if we perform no
4273 edits, then rawsize will be zero and we should use size). */
4274 bfd_byte
*edited_contents
= (bfd_byte
*) bfd_malloc (sec
->size
);
4275 unsigned int input_size
= sec
->rawsize
? sec
->rawsize
: sec
->size
;
4276 unsigned int in_index
, out_index
;
4277 bfd_vma add_to_offsets
= 0;
4279 for (in_index
= 0, out_index
= 0; in_index
* 8 < input_size
|| edit_node
;)
4283 unsigned int edit_index
= edit_node
->index
;
4285 if (in_index
< edit_index
&& in_index
* 8 < input_size
)
4287 elf32_tic6x_copy_exidx_entry (output_bfd
,
4288 edited_contents
+ out_index
* 8,
4289 contents
+ in_index
* 8, add_to_offsets
);
4293 else if (in_index
== edit_index
4294 || (in_index
* 8 >= input_size
4295 && edit_index
== UINT_MAX
))
4297 switch (edit_node
->type
)
4299 case DELETE_EXIDX_ENTRY
:
4301 add_to_offsets
+= 8;
4304 case INSERT_EXIDX_CANTUNWIND_AT_END
:
4306 asection
*text_sec
= edit_node
->linked_section
;
4307 bfd_vma text_offset
= text_sec
->output_section
->vma
4308 + text_sec
->output_offset
4310 bfd_vma exidx_offset
= offset
+ out_index
* 8;
4311 unsigned long prel31_offset
;
4313 /* Note: this is meant to be equivalent to an
4314 R_C6000_PREL31 relocation. These synthetic
4315 EXIDX_CANTUNWIND markers are not relocated by the
4316 usual BFD method. */
4317 prel31_offset
= ((text_offset
- exidx_offset
) >> 1)
4320 /* First address we can't unwind. */
4321 bfd_put_32 (output_bfd
, prel31_offset
,
4322 &edited_contents
[out_index
* 8]);
4324 /* Code for EXIDX_CANTUNWIND. */
4325 bfd_put_32 (output_bfd
, 0x1,
4326 &edited_contents
[out_index
* 8 + 4]);
4329 add_to_offsets
-= 8;
4334 edit_node
= edit_node
->next
;
4339 /* No more edits, copy remaining entries verbatim. */
4340 elf32_tic6x_copy_exidx_entry (output_bfd
,
4341 edited_contents
+ out_index
* 8,
4342 contents
+ in_index
* 8, add_to_offsets
);
4348 if (!(sec
->flags
& SEC_EXCLUDE
) && !(sec
->flags
& SEC_NEVER_LOAD
))
4349 bfd_set_section_contents (output_bfd
, sec
->output_section
,
4351 (file_ptr
) sec
->output_offset
, sec
->size
);
4356 #define TARGET_LITTLE_SYM tic6x_elf32_le_vec
4357 #define TARGET_LITTLE_NAME "elf32-tic6x-le"
4358 #define TARGET_BIG_SYM tic6x_elf32_be_vec
4359 #define TARGET_BIG_NAME "elf32-tic6x-be"
4360 #define ELF_ARCH bfd_arch_tic6x
4361 #define ELF_TARGET_ID TIC6X_ELF_DATA
4362 #define ELF_MACHINE_CODE EM_TI_C6000
4363 #define ELF_MAXPAGESIZE 0x1000
4364 #define bfd_elf32_bfd_reloc_type_lookup elf32_tic6x_reloc_type_lookup
4365 #define bfd_elf32_bfd_reloc_name_lookup elf32_tic6x_reloc_name_lookup
4366 #define bfd_elf32_bfd_merge_private_bfd_data elf32_tic6x_merge_private_bfd_data
4367 #define bfd_elf32_mkobject elf32_tic6x_mkobject
4368 #define bfd_elf32_bfd_link_hash_table_create elf32_tic6x_link_hash_table_create
4369 #define bfd_elf32_new_section_hook elf32_tic6x_new_section_hook
4370 #define elf_backend_stack_align 8
4371 #define elf_backend_can_gc_sections 1
4372 #define elf_backend_default_use_rela_p 1
4373 #define elf_backend_may_use_rel_p 1
4374 #define elf_backend_may_use_rela_p 1
4375 #define elf_backend_obj_attrs_arg_type elf32_tic6x_obj_attrs_arg_type
4376 #define elf_backend_obj_attrs_handle_unknown elf32_tic6x_obj_attrs_handle_unknown
4377 #define elf_backend_obj_attrs_order elf32_tic6x_obj_attrs_order
4378 #define elf_backend_obj_attrs_section ".c6xabi.attributes"
4379 #define elf_backend_obj_attrs_section_type SHT_C6000_ATTRIBUTES
4380 #define elf_backend_obj_attrs_vendor "c6xabi"
4381 #define elf_backend_can_refcount 1
4382 #define elf_backend_want_got_plt 1
4383 #define elf_backend_want_dynbss 1
4384 #define elf_backend_plt_readonly 1
4385 #define elf_backend_rela_normal 1
4386 #define elf_backend_got_header_size 8
4387 #define elf_backend_fake_sections elf32_tic6x_fake_sections
4388 #define elf_backend_gc_sweep_hook elf32_tic6x_gc_sweep_hook
4389 #define elf_backend_gc_mark_extra_sections elf32_tic6x_gc_mark_extra_sections
4390 #define elf_backend_create_dynamic_sections \
4391 elf32_tic6x_create_dynamic_sections
4392 #define elf_backend_adjust_dynamic_symbol \
4393 elf32_tic6x_adjust_dynamic_symbol
4394 #define elf_backend_check_relocs elf32_tic6x_check_relocs
4395 #define elf_backend_add_symbol_hook elf32_tic6x_add_symbol_hook
4396 #define elf_backend_symbol_processing elf32_tic6x_symbol_processing
4397 #define elf_backend_link_output_symbol_hook \
4398 elf32_tic6x_link_output_symbol_hook
4399 #define elf_backend_section_from_bfd_section \
4400 elf32_tic6x_section_from_bfd_section
4401 #define elf_backend_relocate_section elf32_tic6x_relocate_section
4402 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
4403 #define elf_backend_finish_dynamic_symbol \
4404 elf32_tic6x_finish_dynamic_symbol
4405 #define elf_backend_always_size_sections \
4406 elf32_tic6x_always_size_sections
4407 #define elf_backend_size_dynamic_sections \
4408 elf32_tic6x_size_dynamic_sections
4409 #define elf_backend_finish_dynamic_sections \
4410 elf32_tic6x_finish_dynamic_sections
4411 #define bfd_elf32_bfd_final_link \
4412 elf32_tic6x_final_link
4413 #define elf_backend_write_section elf32_tic6x_write_section
4414 #define elf_info_to_howto elf32_tic6x_info_to_howto
4415 #define elf_info_to_howto_rel elf32_tic6x_info_to_howto_rel
4417 #undef elf_backend_omit_section_dynsym
4418 #define elf_backend_omit_section_dynsym elf32_tic6x_link_omit_section_dynsym
4419 #define elf_backend_plt_sym_val elf32_tic6x_plt_sym_val
4421 #include "elf32-target.h"
4424 #define elf32_bed elf32_tic6x_linux_bed
4426 #undef TARGET_LITTLE_SYM
4427 #define TARGET_LITTLE_SYM tic6x_elf32_linux_le_vec
4428 #undef TARGET_LITTLE_NAME
4429 #define TARGET_LITTLE_NAME "elf32-tic6x-linux-le"
4430 #undef TARGET_BIG_SYM
4431 #define TARGET_BIG_SYM tic6x_elf32_linux_be_vec
4432 #undef TARGET_BIG_NAME
4433 #define TARGET_BIG_NAME "elf32-tic6x-linux-be"
4435 #define ELF_OSABI ELFOSABI_C6000_LINUX
4437 #include "elf32-target.h"
4440 #define elf32_bed elf32_tic6x_elf_bed
4442 #undef TARGET_LITTLE_SYM
4443 #define TARGET_LITTLE_SYM tic6x_elf32_c6000_le_vec
4444 #undef TARGET_LITTLE_NAME
4445 #define TARGET_LITTLE_NAME "elf32-tic6x-elf-le"
4446 #undef TARGET_BIG_SYM
4447 #define TARGET_BIG_SYM tic6x_elf32_c6000_be_vec
4448 #undef TARGET_BIG_NAME
4449 #define TARGET_BIG_NAME "elf32-tic6x-elf-be"
4451 #define ELF_OSABI ELFOSABI_C6000_ELFABI
4453 #include "elf32-target.h"