1 /* 32-bit ELF support for TI C6X
2 Copyright (C) 2010-2017 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 /* C6X specific command line arguments. */
47 struct elf32_tic6x_params params
;
49 /* Small local sym cache. */
50 struct sym_cache sym_cache
;
52 /* The output BFD, for convenience. */
55 /* The .dsbt section. */
59 /* Get the TI C6X ELF linker hash table from a link_info structure. */
61 #define elf32_tic6x_hash_table(p) \
62 ((struct elf32_tic6x_link_hash_table *) ((p)->hash))
64 /* TI C6X ELF linker hash entry. */
66 struct elf32_tic6x_link_hash_entry
68 struct elf_link_hash_entry elf
;
70 /* Track dynamic relocs copied for this symbol. */
71 struct elf_dyn_relocs
*dyn_relocs
;
77 INSERT_EXIDX_CANTUNWIND_AT_END
79 tic6x_unwind_edit_type
;
81 /* A (sorted) list of edits to apply to an unwind table. */
82 typedef struct tic6x_unwind_table_edit
84 tic6x_unwind_edit_type type
;
85 /* Note: we sometimes want to insert an unwind entry corresponding to a
86 section different from the one we're currently writing out, so record the
87 (text) section this edit relates to here. */
88 asection
*linked_section
;
90 struct tic6x_unwind_table_edit
*next
;
92 tic6x_unwind_table_edit
;
94 typedef struct _tic6x_elf_section_data
96 /* Information about mapping symbols. */
97 struct bfd_elf_section_data elf
;
98 /* Information about unwind tables. */
101 /* Unwind info attached to a text section. */
104 asection
*tic6x_exidx_sec
;
107 /* Unwind info attached to an .c6xabi.exidx section. */
110 tic6x_unwind_table_edit
*unwind_edit_list
;
111 tic6x_unwind_table_edit
*unwind_edit_tail
;
115 _tic6x_elf_section_data
;
117 #define elf32_tic6x_section_data(sec) \
118 ((_tic6x_elf_section_data *) elf_section_data (sec))
120 struct elf32_tic6x_obj_tdata
122 struct elf_obj_tdata root
;
124 /* Whether to use RELA relocations when generating relocations.
125 This is a per-object flag to allow the assembler to generate REL
126 relocations for use in linker testcases. */
127 bfd_boolean use_rela_p
;
130 #define elf32_tic6x_tdata(abfd) \
131 ((struct elf32_tic6x_obj_tdata *) (abfd)->tdata.any)
133 #define is_tic6x_elf(bfd) \
134 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
135 && elf_tdata (bfd) != NULL \
136 && elf_object_id (bfd) == TIC6X_ELF_DATA)
138 /* C6X ELF uses two common sections. One is the usual one, and the
139 other is for small objects. All the small objects are kept
140 together, and then referenced via the gp pointer, which yields
141 faster assembler code. This is what we use for the small common
142 section. This approach is copied from ecoff.c. */
143 static asection tic6x_elf_scom_section
;
144 static asymbol tic6x_elf_scom_symbol
;
145 static asymbol
*tic6x_elf_scom_symbol_ptr
;
147 static reloc_howto_type elf32_tic6x_howto_table
[] =
149 HOWTO (R_C6000_NONE
, /* type */
151 3, /* size (0 = byte, 1 = short, 2 = long) */
153 FALSE
, /* pc_relative */
155 complain_overflow_dont
,/* complain_on_overflow */
156 bfd_elf_generic_reloc
, /* special_function */
157 "R_C6000_NONE", /* name */
158 FALSE
, /* partial_inplace */
161 FALSE
), /* pcrel_offset */
162 HOWTO (R_C6000_ABS32
, /* type */
164 2, /* size (0 = byte, 1 = short, 2 = long) */
166 FALSE
, /* pc_relative */
168 complain_overflow_dont
,/* complain_on_overflow */
169 bfd_elf_generic_reloc
, /* special_function */
170 "R_C6000_ABS32", /* name */
171 FALSE
, /* partial_inplace */
173 0xffffffff, /* dst_mask */
174 FALSE
), /* pcrel_offset */
175 HOWTO (R_C6000_ABS16
, /* type */
177 1, /* size (0 = byte, 1 = short, 2 = long) */
179 FALSE
, /* pc_relative */
181 complain_overflow_bitfield
,/* complain_on_overflow */
182 bfd_elf_generic_reloc
, /* special_function */
183 "R_C6000_ABS16", /* name */
184 FALSE
, /* partial_inplace */
186 0x0000ffff, /* dst_mask */
187 FALSE
), /* pcrel_offset */
188 HOWTO (R_C6000_ABS8
, /* type */
190 0, /* size (0 = byte, 1 = short, 2 = long) */
192 FALSE
, /* pc_relative */
194 complain_overflow_bitfield
,/* complain_on_overflow */
195 bfd_elf_generic_reloc
, /* special_function */
196 "R_C6000_ABS8", /* name */
197 FALSE
, /* partial_inplace */
199 0x000000ff, /* dst_mask */
200 FALSE
), /* pcrel_offset */
201 HOWTO (R_C6000_PCR_S21
, /* type */
203 2, /* size (0 = byte, 1 = short, 2 = long) */
205 TRUE
, /* pc_relative */
207 complain_overflow_signed
,/* complain_on_overflow */
208 bfd_elf_generic_reloc
, /* special_function */
209 "R_C6000_PCR_S21", /* name */
210 FALSE
, /* partial_inplace */
212 0x0fffff80, /* dst_mask */
213 TRUE
), /* pcrel_offset */
214 HOWTO (R_C6000_PCR_S12
, /* type */
216 2, /* size (0 = byte, 1 = short, 2 = long) */
218 TRUE
, /* pc_relative */
220 complain_overflow_signed
,/* complain_on_overflow */
221 bfd_elf_generic_reloc
, /* special_function */
222 "R_C6000_PCR_S12", /* name */
223 FALSE
, /* partial_inplace */
225 0x0fff0000, /* dst_mask */
226 TRUE
), /* pcrel_offset */
227 HOWTO (R_C6000_PCR_S10
, /* type */
229 2, /* size (0 = byte, 1 = short, 2 = long) */
231 TRUE
, /* pc_relative */
233 complain_overflow_signed
,/* complain_on_overflow */
234 bfd_elf_generic_reloc
, /* special_function */
235 "R_C6000_PCR_S10", /* name */
236 FALSE
, /* partial_inplace */
238 0x007fe000, /* dst_mask */
239 TRUE
), /* pcrel_offset */
240 HOWTO (R_C6000_PCR_S7
, /* type */
242 2, /* size (0 = byte, 1 = short, 2 = long) */
244 TRUE
, /* pc_relative */
246 complain_overflow_signed
,/* complain_on_overflow */
247 bfd_elf_generic_reloc
, /* special_function */
248 "R_C6000_PCR_S7", /* name */
249 FALSE
, /* partial_inplace */
251 0x007f0000, /* dst_mask */
252 TRUE
), /* pcrel_offset */
253 HOWTO (R_C6000_ABS_S16
, /* type */
255 2, /* size (0 = byte, 1 = short, 2 = long) */
257 FALSE
, /* pc_relative */
259 complain_overflow_signed
,/* complain_on_overflow */
260 bfd_elf_generic_reloc
, /* special_function */
261 "R_C6000_ABS_S16", /* name */
262 FALSE
, /* partial_inplace */
264 0x007fff80, /* dst_mask */
265 FALSE
), /* pcrel_offset */
266 HOWTO (R_C6000_ABS_L16
, /* type */
268 2, /* size (0 = byte, 1 = short, 2 = long) */
270 FALSE
, /* pc_relative */
272 complain_overflow_dont
,/* complain_on_overflow */
273 bfd_elf_generic_reloc
, /* special_function */
274 "R_C6000_ABS_L16", /* name */
275 FALSE
, /* partial_inplace */
277 0x007fff80, /* dst_mask */
278 FALSE
), /* pcrel_offset */
279 HOWTO (R_C6000_ABS_H16
, /* type */
281 2, /* size (0 = byte, 1 = short, 2 = long) */
283 FALSE
, /* pc_relative */
285 complain_overflow_dont
,/* complain_on_overflow */
286 bfd_elf_generic_reloc
, /* special_function */
287 "R_C6000_ABS_H16", /* name */
288 FALSE
, /* partial_inplace */
290 0x007fff80, /* dst_mask */
291 FALSE
), /* pcrel_offset */
292 HOWTO (R_C6000_SBR_U15_B
, /* type */
294 2, /* size (0 = byte, 1 = short, 2 = long) */
296 FALSE
, /* pc_relative */
298 complain_overflow_unsigned
,/* complain_on_overflow */
299 bfd_elf_generic_reloc
, /* special_function */
300 "R_C6000_SBR_U15_B", /* name */
301 FALSE
, /* partial_inplace */
303 0x007fff00, /* dst_mask */
304 FALSE
), /* pcrel_offset */
305 HOWTO (R_C6000_SBR_U15_H
, /* type */
307 2, /* size (0 = byte, 1 = short, 2 = long) */
309 FALSE
, /* pc_relative */
311 complain_overflow_unsigned
,/* complain_on_overflow */
312 bfd_elf_generic_reloc
, /* special_function */
313 "R_C6000_SBR_U15_H", /* name */
314 FALSE
, /* partial_inplace */
316 0x007fff00, /* dst_mask */
317 FALSE
), /* pcrel_offset */
318 HOWTO (R_C6000_SBR_U15_W
, /* type */
320 2, /* size (0 = byte, 1 = short, 2 = long) */
322 FALSE
, /* pc_relative */
324 complain_overflow_unsigned
,/* complain_on_overflow */
325 bfd_elf_generic_reloc
, /* special_function */
326 "R_C6000_SBR_U15_W", /* name */
327 FALSE
, /* partial_inplace */
329 0x007fff00, /* dst_mask */
330 FALSE
), /* pcrel_offset */
331 HOWTO (R_C6000_SBR_S16
, /* type */
333 2, /* size (0 = byte, 1 = short, 2 = long) */
335 FALSE
, /* pc_relative */
337 complain_overflow_signed
,/* complain_on_overflow */
338 bfd_elf_generic_reloc
, /* special_function */
339 "R_C6000_SBR_S16", /* name */
340 FALSE
, /* partial_inplace */
342 0x007fff80, /* dst_mask */
343 FALSE
), /* pcrel_offset */
344 HOWTO (R_C6000_SBR_L16_B
, /* type */
346 2, /* size (0 = byte, 1 = short, 2 = long) */
348 FALSE
, /* pc_relative */
350 complain_overflow_dont
,/* complain_on_overflow */
351 bfd_elf_generic_reloc
, /* special_function */
352 "R_C6000_SBR_L16_B", /* name */
353 FALSE
, /* partial_inplace */
355 0x007fff80, /* dst_mask */
356 FALSE
), /* pcrel_offset */
357 HOWTO (R_C6000_SBR_L16_H
, /* type */
359 2, /* size (0 = byte, 1 = short, 2 = long) */
361 FALSE
, /* pc_relative */
363 complain_overflow_dont
,/* complain_on_overflow */
364 bfd_elf_generic_reloc
, /* special_function */
365 "R_C6000_SBR_L16_H", /* name */
366 FALSE
, /* partial_inplace */
368 0x007fff80, /* dst_mask */
369 FALSE
), /* pcrel_offset */
370 HOWTO (R_C6000_SBR_L16_W
, /* type */
372 2, /* size (0 = byte, 1 = short, 2 = long) */
374 FALSE
, /* pc_relative */
376 complain_overflow_dont
,/* complain_on_overflow */
377 bfd_elf_generic_reloc
, /* special_function */
378 "R_C6000_SBR_L16_W", /* name */
379 FALSE
, /* partial_inplace */
381 0x007fff80, /* dst_mask */
382 FALSE
), /* pcrel_offset */
383 HOWTO (R_C6000_SBR_H16_B
, /* type */
385 2, /* size (0 = byte, 1 = short, 2 = long) */
387 FALSE
, /* pc_relative */
389 complain_overflow_dont
,/* complain_on_overflow */
390 bfd_elf_generic_reloc
, /* special_function */
391 "R_C6000_SBR_H16_B", /* name */
392 FALSE
, /* partial_inplace */
394 0x007fff80, /* dst_mask */
395 FALSE
), /* pcrel_offset */
396 HOWTO (R_C6000_SBR_H16_H
, /* type */
398 2, /* size (0 = byte, 1 = short, 2 = long) */
400 FALSE
, /* pc_relative */
402 complain_overflow_dont
,/* complain_on_overflow */
403 bfd_elf_generic_reloc
, /* special_function */
404 "R_C6000_SBR_H16_H", /* name */
405 FALSE
, /* partial_inplace */
407 0x007fff80, /* dst_mask */
408 FALSE
), /* pcrel_offset */
409 HOWTO (R_C6000_SBR_H16_W
, /* type */
411 2, /* size (0 = byte, 1 = short, 2 = long) */
413 FALSE
, /* pc_relative */
415 complain_overflow_dont
,/* complain_on_overflow */
416 bfd_elf_generic_reloc
, /* special_function */
417 "R_C6000_SBR_H16_W", /* name */
418 FALSE
, /* partial_inplace */
420 0x007fff80, /* dst_mask */
421 FALSE
), /* pcrel_offset */
422 HOWTO (R_C6000_SBR_GOT_U15_W
, /* type */
424 2, /* size (0 = byte, 1 = short, 2 = long) */
426 FALSE
, /* pc_relative */
428 complain_overflow_unsigned
,/* complain_on_overflow */
429 bfd_elf_generic_reloc
, /* special_function */
430 "R_C6000_SBR_GOT_U15_W",/* name */
431 FALSE
, /* partial_inplace */
433 0x007fff00, /* dst_mask */
434 FALSE
), /* pcrel_offset */
435 HOWTO (R_C6000_SBR_GOT_L16_W
, /* type */
437 2, /* size (0 = byte, 1 = short, 2 = long) */
439 FALSE
, /* pc_relative */
441 complain_overflow_dont
,/* complain_on_overflow */
442 bfd_elf_generic_reloc
, /* special_function */
443 "R_C6000_SBR_GOT_L16_W",/* name */
444 FALSE
, /* partial_inplace */
446 0x007fff80, /* dst_mask */
447 FALSE
), /* pcrel_offset */
448 HOWTO (R_C6000_SBR_GOT_H16_W
, /* type */
450 2, /* size (0 = byte, 1 = short, 2 = long) */
452 FALSE
, /* pc_relative */
454 complain_overflow_dont
,/* complain_on_overflow */
455 bfd_elf_generic_reloc
, /* special_function */
456 "R_C6000_SBR_GOT_H16_W",/* name */
457 FALSE
, /* partial_inplace */
459 0x007fff80, /* dst_mask */
460 FALSE
), /* pcrel_offset */
461 HOWTO (R_C6000_DSBT_INDEX
, /* type */
463 2, /* size (0 = byte, 1 = short, 2 = long) */
465 FALSE
, /* pc_relative */
467 complain_overflow_unsigned
,/* complain_on_overflow */
468 bfd_elf_generic_reloc
, /* special_function */
469 "R_C6000_DSBT_INDEX", /* name */
470 FALSE
, /* partial_inplace */
472 0x007fff00, /* dst_mask */
473 FALSE
), /* pcrel_offset */
474 HOWTO (R_C6000_PREL31
, /* type */
476 2, /* size (0 = byte, 1 = short, 2 = long) */
478 TRUE
, /* pc_relative */
480 complain_overflow_dont
,/* complain_on_overflow */
481 bfd_elf_generic_reloc
, /* special_function */
482 "R_C6000_PREL31", /* name */
483 FALSE
, /* partial_inplace */
485 0x7fffffff, /* dst_mask */
486 TRUE
), /* pcrel_offset */
487 HOWTO (R_C6000_COPY
, /* type */
489 2, /* size (0 = byte, 1 = short, 2 = long) */
491 FALSE
, /* pc_relative */
493 complain_overflow_dont
,/* complain_on_overflow */
494 bfd_elf_generic_reloc
, /* special_function */
495 "R_C6000_COPY", /* name */
496 FALSE
, /* partial_inplace */
498 0xffffffff, /* dst_mask */
499 FALSE
), /* pcrel_offset */
500 HOWTO (R_C6000_JUMP_SLOT
, /* type */
502 2, /* size (0 = byte, 1 = short, 2 = long) */
504 FALSE
, /* pc_relative */
506 complain_overflow_dont
,/* complain_on_overflow */
507 bfd_elf_generic_reloc
, /* special_function */
508 "R_C6000_JUMP_SLOT", /* name */
509 FALSE
, /* partial_inplace */
511 0xffffffff, /* dst_mask */
512 FALSE
), /* pcrel_offset */
513 HOWTO (R_C6000_EHTYPE
, /* type */
515 2, /* size (0 = byte, 1 = short, 2 = long) */
517 FALSE
, /* pc_relative */
519 complain_overflow_dont
,/* complain_on_overflow */
520 bfd_elf_generic_reloc
, /* special_function */
521 "R_C6000_EHTYPE", /* name */
522 FALSE
, /* partial_inplace */
524 0xffffffff, /* dst_mask */
525 FALSE
), /* pcrel_offset */
526 HOWTO (R_C6000_PCR_H16
, /* type */
528 2, /* size (0 = byte, 1 = short, 2 = long) */
530 TRUE
, /* pc_relative */
532 complain_overflow_dont
,/* complain_on_overflow */
533 bfd_elf_generic_reloc
, /* special_function */
534 "R_C6000_PCR_H16", /* name */
535 FALSE
, /* partial_inplace */
537 0x007fff80, /* dst_mask */
538 TRUE
), /* pcrel_offset */
539 HOWTO (R_C6000_PCR_L16
, /* type */
541 2, /* size (0 = byte, 1 = short, 2 = long) */
543 TRUE
, /* pc_relative */
545 complain_overflow_dont
,/* complain_on_overflow */
546 bfd_elf_generic_reloc
, /* special_function */
547 "R_C6000_PCR_L16", /* name */
548 FALSE
, /* partial_inplace */
550 0x007fff80, /* dst_mask */
551 TRUE
), /* pcrel_offset */
774 HOWTO (R_C6000_ALIGN
, /* type */
776 0, /* size (0 = byte, 1 = short, 2 = long) */
778 FALSE
, /* pc_relative */
780 complain_overflow_dont
,/* complain_on_overflow */
781 bfd_elf_generic_reloc
, /* special_function */
782 "R_C6000_ALIGN", /* name */
783 FALSE
, /* partial_inplace */
786 FALSE
), /* pcrel_offset */
787 HOWTO (R_C6000_FPHEAD
, /* type */
789 0, /* size (0 = byte, 1 = short, 2 = long) */
791 FALSE
, /* pc_relative */
793 complain_overflow_dont
,/* complain_on_overflow */
794 bfd_elf_generic_reloc
, /* special_function */
795 "R_C6000_FPHEAD", /* name */
796 FALSE
, /* partial_inplace */
799 FALSE
), /* pcrel_offset */
800 HOWTO (R_C6000_NOCMP
, /* type */
802 0, /* size (0 = byte, 1 = short, 2 = long) */
804 FALSE
, /* pc_relative */
806 complain_overflow_dont
,/* complain_on_overflow */
807 bfd_elf_generic_reloc
, /* special_function */
808 "R_C6000_NOCMP", /* name */
809 FALSE
, /* partial_inplace */
812 FALSE
) /* pcrel_offset */
815 static reloc_howto_type elf32_tic6x_howto_table_rel
[] =
817 HOWTO (R_C6000_NONE
, /* type */
819 3, /* size (0 = byte, 1 = short, 2 = long) */
821 FALSE
, /* pc_relative */
823 complain_overflow_dont
,/* complain_on_overflow */
824 bfd_elf_generic_reloc
, /* special_function */
825 "R_C6000_NONE", /* name */
826 TRUE
, /* partial_inplace */
829 FALSE
), /* pcrel_offset */
830 HOWTO (R_C6000_ABS32
, /* type */
832 2, /* size (0 = byte, 1 = short, 2 = long) */
834 FALSE
, /* pc_relative */
836 complain_overflow_dont
,/* complain_on_overflow */
837 bfd_elf_generic_reloc
, /* special_function */
838 "R_C6000_ABS32", /* name */
839 TRUE
, /* partial_inplace */
840 0xffffffff, /* src_mask */
841 0xffffffff, /* dst_mask */
842 FALSE
), /* pcrel_offset */
843 HOWTO (R_C6000_ABS16
, /* type */
845 1, /* size (0 = byte, 1 = short, 2 = long) */
847 FALSE
, /* pc_relative */
849 complain_overflow_bitfield
,/* complain_on_overflow */
850 bfd_elf_generic_reloc
, /* special_function */
851 "R_C6000_ABS16", /* name */
852 TRUE
, /* partial_inplace */
853 0x0000ffff, /* src_mask */
854 0x0000ffff, /* dst_mask */
855 FALSE
), /* pcrel_offset */
856 HOWTO (R_C6000_ABS8
, /* type */
858 0, /* size (0 = byte, 1 = short, 2 = long) */
860 FALSE
, /* pc_relative */
862 complain_overflow_bitfield
,/* complain_on_overflow */
863 bfd_elf_generic_reloc
, /* special_function */
864 "R_C6000_ABS8", /* name */
865 TRUE
, /* partial_inplace */
866 0x000000ff, /* src_mask */
867 0x000000ff, /* dst_mask */
868 FALSE
), /* pcrel_offset */
869 HOWTO (R_C6000_PCR_S21
, /* type */
871 2, /* size (0 = byte, 1 = short, 2 = long) */
873 TRUE
, /* pc_relative */
875 complain_overflow_signed
,/* complain_on_overflow */
876 bfd_elf_generic_reloc
, /* special_function */
877 "R_C6000_PCR_S21", /* name */
878 TRUE
, /* partial_inplace */
879 0x0fffff80, /* src_mask */
880 0x0fffff80, /* dst_mask */
881 TRUE
), /* pcrel_offset */
882 HOWTO (R_C6000_PCR_S12
, /* type */
884 2, /* size (0 = byte, 1 = short, 2 = long) */
886 TRUE
, /* pc_relative */
888 complain_overflow_signed
,/* complain_on_overflow */
889 bfd_elf_generic_reloc
, /* special_function */
890 "R_C6000_PCR_S12", /* name */
891 TRUE
, /* partial_inplace */
892 0x0fff0000, /* src_mask */
893 0x0fff0000, /* dst_mask */
894 TRUE
), /* pcrel_offset */
895 HOWTO (R_C6000_PCR_S10
, /* type */
897 2, /* size (0 = byte, 1 = short, 2 = long) */
899 TRUE
, /* pc_relative */
901 complain_overflow_signed
,/* complain_on_overflow */
902 bfd_elf_generic_reloc
, /* special_function */
903 "R_C6000_PCR_S10", /* name */
904 TRUE
, /* partial_inplace */
905 0x007fe000, /* src_mask */
906 0x007fe000, /* dst_mask */
907 TRUE
), /* pcrel_offset */
908 HOWTO (R_C6000_PCR_S7
, /* type */
910 2, /* size (0 = byte, 1 = short, 2 = long) */
912 TRUE
, /* pc_relative */
914 complain_overflow_signed
,/* complain_on_overflow */
915 bfd_elf_generic_reloc
, /* special_function */
916 "R_C6000_PCR_S7", /* name */
917 TRUE
, /* partial_inplace */
918 0x007f0000, /* src_mask */
919 0x007f0000, /* dst_mask */
920 TRUE
), /* pcrel_offset */
921 HOWTO (R_C6000_ABS_S16
, /* type */
923 2, /* size (0 = byte, 1 = short, 2 = long) */
925 FALSE
, /* pc_relative */
927 complain_overflow_signed
,/* complain_on_overflow */
928 bfd_elf_generic_reloc
, /* special_function */
929 "R_C6000_ABS_S16", /* name */
930 TRUE
, /* partial_inplace */
931 0x007fff80, /* src_mask */
932 0x007fff80, /* dst_mask */
933 FALSE
), /* pcrel_offset */
934 HOWTO (R_C6000_ABS_L16
, /* type */
936 2, /* size (0 = byte, 1 = short, 2 = long) */
938 FALSE
, /* pc_relative */
940 complain_overflow_dont
,/* complain_on_overflow */
941 bfd_elf_generic_reloc
, /* special_function */
942 "R_C6000_ABS_L16", /* name */
943 TRUE
, /* partial_inplace */
944 0x007fff80, /* src_mask */
945 0x007fff80, /* dst_mask */
946 FALSE
), /* pcrel_offset */
947 EMPTY_HOWTO (R_C6000_ABS_H16
),
948 HOWTO (R_C6000_SBR_U15_B
, /* type */
950 2, /* size (0 = byte, 1 = short, 2 = long) */
952 FALSE
, /* pc_relative */
954 complain_overflow_unsigned
,/* complain_on_overflow */
955 bfd_elf_generic_reloc
, /* special_function */
956 "R_C6000_SBR_U15_B", /* name */
957 TRUE
, /* partial_inplace */
958 0x007fff00, /* src_mask */
959 0x007fff00, /* dst_mask */
960 FALSE
), /* pcrel_offset */
961 HOWTO (R_C6000_SBR_U15_H
, /* type */
963 2, /* size (0 = byte, 1 = short, 2 = long) */
965 FALSE
, /* pc_relative */
967 complain_overflow_unsigned
,/* complain_on_overflow */
968 bfd_elf_generic_reloc
, /* special_function */
969 "R_C6000_SBR_U15_H", /* name */
970 TRUE
, /* partial_inplace */
971 0x007fff00, /* src_mask */
972 0x007fff00, /* dst_mask */
973 FALSE
), /* pcrel_offset */
974 HOWTO (R_C6000_SBR_U15_W
, /* type */
976 2, /* size (0 = byte, 1 = short, 2 = long) */
978 FALSE
, /* pc_relative */
980 complain_overflow_unsigned
,/* complain_on_overflow */
981 bfd_elf_generic_reloc
, /* special_function */
982 "R_C6000_SBR_U15_W", /* name */
983 TRUE
, /* partial_inplace */
984 0x007fff00, /* src_mask */
985 0x007fff00, /* dst_mask */
986 FALSE
), /* pcrel_offset */
987 HOWTO (R_C6000_SBR_S16
, /* type */
989 2, /* size (0 = byte, 1 = short, 2 = long) */
991 FALSE
, /* pc_relative */
993 complain_overflow_signed
,/* complain_on_overflow */
994 bfd_elf_generic_reloc
, /* special_function */
995 "R_C6000_SBR_S16", /* name */
996 TRUE
, /* partial_inplace */
997 0x007fff80, /* src_mask */
998 0x007fff80, /* dst_mask */
999 FALSE
), /* pcrel_offset */
1000 HOWTO (R_C6000_SBR_L16_B
, /* type */
1002 2, /* size (0 = byte, 1 = short, 2 = long) */
1004 FALSE
, /* pc_relative */
1006 complain_overflow_dont
,/* complain_on_overflow */
1007 bfd_elf_generic_reloc
, /* special_function */
1008 "R_C6000_SBR_L16_B", /* name */
1009 TRUE
, /* partial_inplace */
1010 0x007fff80, /* src_mask */
1011 0x007fff80, /* dst_mask */
1012 FALSE
), /* pcrel_offset */
1013 HOWTO (R_C6000_SBR_L16_H
, /* type */
1015 2, /* size (0 = byte, 1 = short, 2 = long) */
1017 FALSE
, /* pc_relative */
1019 complain_overflow_dont
,/* complain_on_overflow */
1020 bfd_elf_generic_reloc
, /* special_function */
1021 "R_C6000_SBR_L16_H", /* name */
1022 TRUE
, /* partial_inplace */
1023 0x007fff80, /* src_mask */
1024 0x007fff80, /* dst_mask */
1025 FALSE
), /* pcrel_offset */
1026 HOWTO (R_C6000_SBR_L16_W
, /* type */
1028 2, /* size (0 = byte, 1 = short, 2 = long) */
1030 FALSE
, /* pc_relative */
1032 complain_overflow_dont
,/* complain_on_overflow */
1033 bfd_elf_generic_reloc
, /* special_function */
1034 "R_C6000_SBR_L16_W", /* name */
1035 TRUE
, /* partial_inplace */
1036 0x007fff80, /* src_mask */
1037 0x007fff80, /* dst_mask */
1038 FALSE
), /* pcrel_offset */
1039 EMPTY_HOWTO (R_C6000_SBR_H16_B
),
1040 EMPTY_HOWTO (R_C6000_SBR_H16_H
),
1041 EMPTY_HOWTO (R_C6000_SBR_H16_W
),
1042 HOWTO (R_C6000_SBR_GOT_U15_W
, /* type */
1044 2, /* size (0 = byte, 1 = short, 2 = long) */
1046 FALSE
, /* pc_relative */
1048 complain_overflow_unsigned
,/* complain_on_overflow */
1049 bfd_elf_generic_reloc
, /* special_function */
1050 "R_C6000_SBR_GOT_U15_W",/* name */
1051 TRUE
, /* partial_inplace */
1052 0x007fff00, /* src_mask */
1053 0x007fff00, /* dst_mask */
1054 FALSE
), /* pcrel_offset */
1055 HOWTO (R_C6000_SBR_GOT_L16_W
, /* type */
1057 2, /* size (0 = byte, 1 = short, 2 = long) */
1059 FALSE
, /* pc_relative */
1061 complain_overflow_dont
,/* complain_on_overflow */
1062 bfd_elf_generic_reloc
, /* special_function */
1063 "R_C6000_SBR_GOT_L16_W",/* name */
1064 TRUE
, /* partial_inplace */
1065 0x007fff80, /* src_mask */
1066 0x007fff80, /* dst_mask */
1067 FALSE
), /* pcrel_offset */
1068 EMPTY_HOWTO (R_C6000_SBR_GOT_H16_W
),
1069 HOWTO (R_C6000_DSBT_INDEX
, /* type */
1071 2, /* size (0 = byte, 1 = short, 2 = long) */
1073 FALSE
, /* pc_relative */
1075 complain_overflow_unsigned
,/* complain_on_overflow */
1076 bfd_elf_generic_reloc
, /* special_function */
1077 "R_C6000_DSBT_INDEX", /* name */
1078 TRUE
, /* partial_inplace */
1080 0x007fff00, /* dst_mask */
1081 FALSE
), /* pcrel_offset */
1082 HOWTO (R_C6000_PREL31
, /* type */
1084 2, /* size (0 = byte, 1 = short, 2 = long) */
1086 TRUE
, /* pc_relative */
1088 complain_overflow_dont
,/* complain_on_overflow */
1089 bfd_elf_generic_reloc
, /* special_function */
1090 "R_C6000_PREL31", /* name */
1091 TRUE
, /* partial_inplace */
1093 0x7fffffff, /* dst_mask */
1094 TRUE
), /* pcrel_offset */
1095 HOWTO (R_C6000_COPY
, /* type */
1097 2, /* size (0 = byte, 1 = short, 2 = long) */
1099 FALSE
, /* pc_relative */
1101 complain_overflow_dont
,/* complain_on_overflow */
1102 bfd_elf_generic_reloc
, /* special_function */
1103 "R_C6000_COPY", /* name */
1104 TRUE
, /* partial_inplace */
1106 0xffffffff, /* dst_mask */
1107 FALSE
), /* pcrel_offset */
1108 HOWTO (R_C6000_JUMP_SLOT
, /* type */
1110 2, /* size (0 = byte, 1 = short, 2 = long) */
1112 FALSE
, /* pc_relative */
1114 complain_overflow_dont
,/* complain_on_overflow */
1115 bfd_elf_generic_reloc
, /* special_function */
1116 "R_C6000_JUMP_SLOT", /* name */
1117 FALSE
, /* partial_inplace */
1119 0xffffffff, /* dst_mask */
1120 FALSE
), /* pcrel_offset */
1121 HOWTO (R_C6000_EHTYPE
, /* type */
1123 2, /* size (0 = byte, 1 = short, 2 = long) */
1125 FALSE
, /* pc_relative */
1127 complain_overflow_dont
,/* complain_on_overflow */
1128 bfd_elf_generic_reloc
, /* special_function */
1129 "R_C6000_EHTYPE", /* name */
1130 FALSE
, /* partial_inplace */
1132 0xffffffff, /* dst_mask */
1133 FALSE
), /* pcrel_offset */
1134 EMPTY_HOWTO (R_C6000_PCR_H16
),
1135 EMPTY_HOWTO (R_C6000_PCR_L16
),
1358 HOWTO (R_C6000_ALIGN
, /* type */
1360 0, /* size (0 = byte, 1 = short, 2 = long) */
1362 FALSE
, /* pc_relative */
1364 complain_overflow_dont
,/* complain_on_overflow */
1365 bfd_elf_generic_reloc
, /* special_function */
1366 "R_C6000_ALIGN", /* name */
1367 TRUE
, /* partial_inplace */
1370 FALSE
), /* pcrel_offset */
1371 HOWTO (R_C6000_FPHEAD
, /* type */
1373 0, /* size (0 = byte, 1 = short, 2 = long) */
1375 FALSE
, /* pc_relative */
1377 complain_overflow_dont
,/* complain_on_overflow */
1378 bfd_elf_generic_reloc
, /* special_function */
1379 "R_C6000_FPHEAD", /* name */
1380 TRUE
, /* partial_inplace */
1383 FALSE
), /* pcrel_offset */
1384 HOWTO (R_C6000_NOCMP
, /* type */
1386 0, /* size (0 = byte, 1 = short, 2 = long) */
1388 FALSE
, /* pc_relative */
1390 complain_overflow_dont
,/* complain_on_overflow */
1391 bfd_elf_generic_reloc
, /* special_function */
1392 "R_C6000_NOCMP", /* name */
1393 TRUE
, /* partial_inplace */
1396 FALSE
) /* pcrel_offset */
1399 /* Map BFD relocations to ELF relocations. */
1403 bfd_reloc_code_real_type bfd_reloc_val
;
1404 enum elf_tic6x_reloc_type elf_reloc_val
;
1407 static const tic6x_reloc_map elf32_tic6x_reloc_map
[] =
1409 { BFD_RELOC_NONE
, R_C6000_NONE
},
1410 { BFD_RELOC_32
, R_C6000_ABS32
},
1411 { BFD_RELOC_16
, R_C6000_ABS16
},
1412 { BFD_RELOC_8
, R_C6000_ABS8
},
1413 { BFD_RELOC_C6000_PCR_S21
, R_C6000_PCR_S21
},
1414 { BFD_RELOC_C6000_PCR_S12
, R_C6000_PCR_S12
},
1415 { BFD_RELOC_C6000_PCR_S10
, R_C6000_PCR_S10
},
1416 { BFD_RELOC_C6000_PCR_S7
, R_C6000_PCR_S7
},
1417 { BFD_RELOC_C6000_ABS_S16
, R_C6000_ABS_S16
},
1418 { BFD_RELOC_C6000_ABS_L16
, R_C6000_ABS_L16
},
1419 { BFD_RELOC_C6000_ABS_H16
, R_C6000_ABS_H16
},
1420 { BFD_RELOC_C6000_SBR_U15_B
, R_C6000_SBR_U15_B
},
1421 { BFD_RELOC_C6000_SBR_U15_H
, R_C6000_SBR_U15_H
},
1422 { BFD_RELOC_C6000_SBR_U15_W
, R_C6000_SBR_U15_W
},
1423 { BFD_RELOC_C6000_SBR_S16
, R_C6000_SBR_S16
},
1424 { BFD_RELOC_C6000_SBR_L16_B
, R_C6000_SBR_L16_B
},
1425 { BFD_RELOC_C6000_SBR_L16_H
, R_C6000_SBR_L16_H
},
1426 { BFD_RELOC_C6000_SBR_L16_W
, R_C6000_SBR_L16_W
},
1427 { BFD_RELOC_C6000_SBR_H16_B
, R_C6000_SBR_H16_B
},
1428 { BFD_RELOC_C6000_SBR_H16_H
, R_C6000_SBR_H16_H
},
1429 { BFD_RELOC_C6000_SBR_H16_W
, R_C6000_SBR_H16_W
},
1430 { BFD_RELOC_C6000_SBR_GOT_U15_W
, R_C6000_SBR_GOT_U15_W
},
1431 { BFD_RELOC_C6000_SBR_GOT_L16_W
, R_C6000_SBR_GOT_L16_W
},
1432 { BFD_RELOC_C6000_SBR_GOT_H16_W
, R_C6000_SBR_GOT_H16_W
},
1433 { BFD_RELOC_C6000_DSBT_INDEX
, R_C6000_DSBT_INDEX
},
1434 { BFD_RELOC_C6000_PREL31
, R_C6000_PREL31
},
1435 { BFD_RELOC_C6000_COPY
, R_C6000_COPY
},
1436 { BFD_RELOC_C6000_JUMP_SLOT
, R_C6000_JUMP_SLOT
},
1437 { BFD_RELOC_C6000_EHTYPE
, R_C6000_EHTYPE
},
1438 { BFD_RELOC_C6000_PCR_H16
, R_C6000_PCR_H16
},
1439 { BFD_RELOC_C6000_PCR_L16
, R_C6000_PCR_L16
},
1440 { BFD_RELOC_C6000_ALIGN
, R_C6000_ALIGN
},
1441 { BFD_RELOC_C6000_FPHEAD
, R_C6000_FPHEAD
},
1442 { BFD_RELOC_C6000_NOCMP
, R_C6000_NOCMP
}
1445 static reloc_howto_type
*
1446 elf32_tic6x_reloc_type_lookup (bfd
*abfd
, bfd_reloc_code_real_type code
)
1450 for (i
= 0; i
< ARRAY_SIZE (elf32_tic6x_reloc_map
); i
++)
1451 if (elf32_tic6x_reloc_map
[i
].bfd_reloc_val
== code
)
1453 enum elf_tic6x_reloc_type elf_reloc_val
;
1454 reloc_howto_type
*howto
;
1456 elf_reloc_val
= elf32_tic6x_reloc_map
[i
].elf_reloc_val
;
1457 if (elf32_tic6x_tdata (abfd
)->use_rela_p
)
1458 howto
= &elf32_tic6x_howto_table
[elf_reloc_val
];
1460 howto
= &elf32_tic6x_howto_table_rel
[elf_reloc_val
];
1462 /* Some relocations are RELA-only; do not return them for
1464 if (howto
->name
== NULL
)
1473 static reloc_howto_type
*
1474 elf32_tic6x_reloc_name_lookup (bfd
*abfd
, const char *r_name
)
1476 if (elf32_tic6x_tdata (abfd
)->use_rela_p
)
1480 for (i
= 0; i
< ARRAY_SIZE (elf32_tic6x_howto_table
); i
++)
1481 if (elf32_tic6x_howto_table
[i
].name
!= NULL
1482 && strcasecmp (elf32_tic6x_howto_table
[i
].name
, r_name
) == 0)
1483 return &elf32_tic6x_howto_table
[i
];
1489 for (i
= 0; i
< ARRAY_SIZE (elf32_tic6x_howto_table_rel
); i
++)
1490 if (elf32_tic6x_howto_table_rel
[i
].name
!= NULL
1491 && strcasecmp (elf32_tic6x_howto_table_rel
[i
].name
, r_name
) == 0)
1492 return &elf32_tic6x_howto_table_rel
[i
];
1499 elf32_tic6x_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*bfd_reloc
,
1500 Elf_Internal_Rela
*elf_reloc
)
1502 unsigned int r_type
;
1504 r_type
= ELF32_R_TYPE (elf_reloc
->r_info
);
1505 if (r_type
>= ARRAY_SIZE (elf32_tic6x_howto_table
))
1506 bfd_reloc
->howto
= NULL
;
1508 bfd_reloc
->howto
= &elf32_tic6x_howto_table
[r_type
];
1512 elf32_tic6x_info_to_howto_rel (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*bfd_reloc
,
1513 Elf_Internal_Rela
*elf_reloc
)
1515 unsigned int r_type
;
1517 r_type
= ELF32_R_TYPE (elf_reloc
->r_info
);
1518 if (r_type
>= ARRAY_SIZE (elf32_tic6x_howto_table_rel
))
1519 bfd_reloc
->howto
= NULL
;
1521 bfd_reloc
->howto
= &elf32_tic6x_howto_table_rel
[r_type
];
1525 elf32_tic6x_set_use_rela_p (bfd
*abfd
, bfd_boolean use_rela_p
)
1527 elf32_tic6x_tdata (abfd
)->use_rela_p
= use_rela_p
;
1530 /* Create an entry in a C6X ELF linker hash table. */
1532 static struct bfd_hash_entry
*
1533 elf32_tic6x_link_hash_newfunc (struct bfd_hash_entry
*entry
,
1534 struct bfd_hash_table
*table
,
1537 /* Allocate the structure if it has not already been allocated by a
1541 entry
= bfd_hash_allocate (table
,
1542 sizeof (struct elf32_tic6x_link_hash_entry
));
1547 /* Call the allocation method of the superclass. */
1548 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
1551 struct elf32_tic6x_link_hash_entry
*eh
;
1553 eh
= (struct elf32_tic6x_link_hash_entry
*) entry
;
1554 eh
->dyn_relocs
= NULL
;
1560 /* Create a C6X ELF linker hash table. */
1562 static struct bfd_link_hash_table
*
1563 elf32_tic6x_link_hash_table_create (bfd
*abfd
)
1565 struct elf32_tic6x_link_hash_table
*ret
;
1566 bfd_size_type amt
= sizeof (struct elf32_tic6x_link_hash_table
);
1568 ret
= bfd_zmalloc (amt
);
1572 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
,
1573 elf32_tic6x_link_hash_newfunc
,
1574 sizeof (struct elf32_tic6x_link_hash_entry
),
1582 ret
->elf
.is_relocatable_executable
= 1;
1584 return &ret
->elf
.root
;
1588 elf32_tic6x_final_link (bfd
*abfd
, struct bfd_link_info
*info
)
1590 if (bfd_link_pic (info
))
1592 obj_attribute
*out_attr
;
1593 out_attr
= elf_known_obj_attributes_proc (abfd
);
1594 if (out_attr
[Tag_ABI_PIC
].i
== 0)
1596 _bfd_error_handler (_("warning: generating a shared library "
1597 "containing non-PIC code"));
1599 if (out_attr
[Tag_ABI_PID
].i
== 0)
1601 _bfd_error_handler (_("warning: generating a shared library "
1602 "containing non-PID code"));
1605 /* Invoke the regular ELF backend linker to do all the work. */
1606 if (!bfd_elf_final_link (abfd
, info
))
1612 /* Called to pass PARAMS to the backend. We store them in the hash table
1613 associated with INFO. */
1616 elf32_tic6x_setup (struct bfd_link_info
*info
,
1617 struct elf32_tic6x_params
*params
)
1619 struct elf32_tic6x_link_hash_table
*htab
= elf32_tic6x_hash_table (info
);
1620 htab
->params
= *params
;
1623 /* Determine if we're dealing with a DSBT object. */
1626 elf32_tic6x_using_dsbt (bfd
*abfd
)
1628 return bfd_elf_get_obj_attr_int (abfd
, OBJ_ATTR_PROC
,
1632 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got and .dsbt
1633 sections in DYNOBJ, and set up shortcuts to them in our hash
1637 elf32_tic6x_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
1639 struct elf32_tic6x_link_hash_table
*htab
;
1642 htab
= elf32_tic6x_hash_table (info
);
1646 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
1650 flags
= (SEC_ALLOC
| SEC_LOAD
1651 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
1652 htab
->dsbt
= bfd_make_section_anyway_with_flags (dynobj
, ".dsbt",
1654 if (htab
->dsbt
== NULL
1655 || ! bfd_set_section_alignment (dynobj
, htab
->dsbt
, 2)
1656 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.splt
, 5))
1663 elf32_tic6x_mkobject (bfd
*abfd
)
1667 ret
= bfd_elf_allocate_object (abfd
, sizeof (struct elf32_tic6x_obj_tdata
),
1670 elf32_tic6x_set_use_rela_p (abfd
, TRUE
);
1674 /* Install relocation RELA into section SRELA, incrementing its
1678 elf32_tic6x_install_rela (bfd
*output_bfd
, asection
*srela
,
1679 Elf_Internal_Rela
*rela
)
1682 bfd_vma off
= srela
->reloc_count
++ * sizeof (Elf32_External_Rela
);
1683 loc
= srela
->contents
+ off
;
1684 BFD_ASSERT (off
< srela
->size
);
1685 bfd_elf32_swap_reloca_out (output_bfd
, rela
, loc
);
1688 /* Create a dynamic reloc against the GOT at offset OFFSET. The contents
1689 of the GOT at this offset have been initialized with the relocation. */
1692 elf32_tic6x_make_got_dynreloc (bfd
*output_bfd
,
1693 struct elf32_tic6x_link_hash_table
*htab
,
1694 asection
*sym_sec
, bfd_vma offset
)
1696 asection
*sgot
= htab
->elf
.sgot
;
1697 Elf_Internal_Rela outrel
;
1700 outrel
.r_offset
= sgot
->output_section
->vma
+ sgot
->output_offset
+ offset
;
1701 outrel
.r_addend
= bfd_get_32 (output_bfd
, sgot
->contents
+ offset
);
1702 if (sym_sec
&& sym_sec
->output_section
1703 && ! bfd_is_abs_section (sym_sec
->output_section
)
1704 && ! bfd_is_und_section (sym_sec
->output_section
))
1706 dynindx
= elf_section_data (sym_sec
->output_section
)->dynindx
;
1707 outrel
.r_addend
-= sym_sec
->output_section
->vma
;
1713 outrel
.r_info
= ELF32_R_INFO (dynindx
, R_C6000_ABS32
);
1714 elf32_tic6x_install_rela (output_bfd
, htab
->elf
.srelgot
, &outrel
);
1717 /* Finish up dynamic symbol handling. We set the contents of various
1718 dynamic sections here. */
1721 elf32_tic6x_finish_dynamic_symbol (bfd
* output_bfd
,
1722 struct bfd_link_info
*info
,
1723 struct elf_link_hash_entry
*h
,
1724 Elf_Internal_Sym
* sym
)
1726 struct elf32_tic6x_link_hash_table
*htab
;
1728 htab
= elf32_tic6x_hash_table (info
);
1730 if (h
->plt
.offset
!= (bfd_vma
) -1)
1733 bfd_vma got_section_offset
, got_dp_offset
, rela_offset
;
1734 Elf_Internal_Rela rela
;
1736 asection
*plt
, *gotplt
, *relplt
;
1737 const struct elf_backend_data
*bed
;
1739 bed
= get_elf_backend_data (output_bfd
);
1741 BFD_ASSERT (htab
->elf
.splt
!= NULL
);
1742 plt
= htab
->elf
.splt
;
1743 gotplt
= htab
->elf
.sgotplt
;
1744 relplt
= htab
->elf
.srelplt
;
1746 /* This symbol has an entry in the procedure linkage table. Set
1749 if ((h
->dynindx
== -1
1750 && !((h
->forced_local
|| bfd_link_executable (info
))
1752 && h
->type
== STT_GNU_IFUNC
))
1758 /* Get the index in the procedure linkage table which
1759 corresponds to this symbol. This is the index of this symbol
1760 in all the symbols for which we are making plt entries. The
1761 first entry in the procedure linkage table is reserved.
1763 Get the offset into the .got table of the entry that
1764 corresponds to this function. Each .got entry is 4 bytes.
1765 The first three are reserved.
1767 For static executables, we don't reserve anything. */
1769 plt_index
= h
->plt
.offset
/ PLT_ENTRY_SIZE
- 1;
1770 got_section_offset
= plt_index
+ bed
->got_header_size
/ 4;
1771 got_dp_offset
= got_section_offset
+ htab
->params
.dsbt_size
;
1772 rela_offset
= plt_index
* sizeof (Elf32_External_Rela
);
1774 got_section_offset
*= 4;
1776 /* Fill in the entry in the procedure linkage table. */
1778 /* ldw .d2t2 *+B14($GOT(f)), b2 */
1779 bfd_put_32 (output_bfd
, got_dp_offset
<< 8 | 0x0100006e,
1780 plt
->contents
+ h
->plt
.offset
);
1781 /* mvk .s2 low(rela_offset), b0 */
1782 bfd_put_32 (output_bfd
, (rela_offset
& 0xffff) << 7 | 0x0000002a,
1783 plt
->contents
+ h
->plt
.offset
+ 4);
1784 /* mvkh .s2 high(rela_offset), b0 */
1785 bfd_put_32 (output_bfd
, ((rela_offset
>> 16) & 0xffff) << 7 | 0x0000006a,
1786 plt
->contents
+ h
->plt
.offset
+ 8);
1788 bfd_put_32 (output_bfd
, 0x00002000,
1789 plt
->contents
+ h
->plt
.offset
+ 12);
1791 bfd_put_32 (output_bfd
, 0x00080362,
1792 plt
->contents
+ h
->plt
.offset
+ 16);
1794 bfd_put_32 (output_bfd
, 0x00008000,
1795 plt
->contents
+ h
->plt
.offset
+ 20);
1797 /* Fill in the entry in the global offset table. */
1798 bfd_put_32 (output_bfd
,
1799 (plt
->output_section
->vma
+ plt
->output_offset
),
1800 gotplt
->contents
+ got_section_offset
);
1802 /* Fill in the entry in the .rel.plt section. */
1803 rela
.r_offset
= (gotplt
->output_section
->vma
1804 + gotplt
->output_offset
1805 + got_section_offset
);
1806 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_C6000_JUMP_SLOT
);
1808 loc
= relplt
->contents
+ rela_offset
;
1809 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1811 if (!h
->def_regular
)
1813 /* Mark the symbol as undefined, rather than as defined in
1814 the .plt section. */
1815 sym
->st_shndx
= SHN_UNDEF
;
1820 if (h
->got
.offset
!= (bfd_vma
) -1)
1825 /* This symbol has an entry in the global offset table.
1828 sgot
= htab
->elf
.sgot
;
1829 srela
= htab
->elf
.srelgot
;
1830 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
1832 /* If this is a -Bsymbolic link, and the symbol is defined
1833 locally, we just want to emit a RELATIVE reloc. Likewise if
1834 the symbol was forced to be local because of a version file.
1835 The entry in the global offset table will already have been
1836 initialized in the relocate_section function. */
1837 if (bfd_link_pic (info
)
1838 && (SYMBOLIC_BIND (info
, h
)
1839 || h
->dynindx
== -1 || h
->forced_local
) && h
->def_regular
)
1841 asection
*s
= h
->root
.u
.def
.section
;
1842 elf32_tic6x_make_got_dynreloc (output_bfd
, htab
, s
,
1843 h
->got
.offset
& ~(bfd_vma
) 1);
1847 Elf_Internal_Rela outrel
;
1848 bfd_put_32 (output_bfd
, (bfd_vma
) 0,
1849 sgot
->contents
+ (h
->got
.offset
& ~(bfd_vma
) 1));
1850 outrel
.r_offset
= (sgot
->output_section
->vma
1851 + sgot
->output_offset
1852 + (h
->got
.offset
& ~(bfd_vma
) 1));
1853 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_C6000_ABS32
);
1854 outrel
.r_addend
= 0;
1856 elf32_tic6x_install_rela (output_bfd
, srela
, &outrel
);
1862 Elf_Internal_Rela rel
;
1865 /* This symbol needs a copy reloc. Set it up. */
1867 if (h
->dynindx
== -1
1868 || (h
->root
.type
!= bfd_link_hash_defined
1869 && h
->root
.type
!= bfd_link_hash_defweak
)
1870 || htab
->elf
.srelbss
== NULL
1871 || htab
->elf
.sreldynrelro
== NULL
)
1874 rel
.r_offset
= (h
->root
.u
.def
.value
1875 + h
->root
.u
.def
.section
->output_section
->vma
1876 + h
->root
.u
.def
.section
->output_offset
);
1877 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_C6000_COPY
);
1879 if (h
->root
.u
.def
.section
== htab
->elf
.sdynrelro
)
1880 s
= htab
->elf
.sreldynrelro
;
1882 s
= htab
->elf
.srelbss
;
1884 elf32_tic6x_install_rela (output_bfd
, s
, &rel
);
1887 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
1888 if (h
== elf_hash_table (info
)->hdynamic
1889 || h
== elf_hash_table (info
)->hgot
)
1890 sym
->st_shndx
= SHN_ABS
;
1895 /* Unwinding tables are not referenced directly. This pass marks them as
1896 required if the corresponding code section is marked. */
1899 elf32_tic6x_gc_mark_extra_sections (struct bfd_link_info
*info
,
1900 elf_gc_mark_hook_fn gc_mark_hook
)
1903 Elf_Internal_Shdr
**elf_shdrp
;
1906 _bfd_elf_gc_mark_extra_sections (info
, gc_mark_hook
);
1908 /* Marking EH data may cause additional code sections to be marked,
1909 requiring multiple passes. */
1914 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link
.next
)
1918 if (! is_tic6x_elf (sub
))
1921 elf_shdrp
= elf_elfsections (sub
);
1922 for (o
= sub
->sections
; o
!= NULL
; o
= o
->next
)
1924 Elf_Internal_Shdr
*hdr
;
1926 hdr
= &elf_section_data (o
)->this_hdr
;
1927 if (hdr
->sh_type
== SHT_C6000_UNWIND
1929 && hdr
->sh_link
< elf_numsections (sub
)
1931 && elf_shdrp
[hdr
->sh_link
]->bfd_section
->gc_mark
)
1934 if (!_bfd_elf_gc_mark (info
, o
, gc_mark_hook
))
1944 /* Return TRUE if this is an unwinding table index. */
1947 is_tic6x_elf_unwind_section_name (const char *name
)
1949 return (CONST_STRNEQ (name
, ELF_STRING_C6000_unwind
)
1950 || CONST_STRNEQ (name
, ELF_STRING_C6000_unwind_once
));
1954 /* Set the type and flags for an unwinding index table. We do this by
1955 the section name, which is a hack, but ought to work. */
1958 elf32_tic6x_fake_sections (bfd
*abfd ATTRIBUTE_UNUSED
,
1959 Elf_Internal_Shdr
*hdr
, asection
*sec
)
1963 name
= bfd_get_section_name (abfd
, sec
);
1965 if (is_tic6x_elf_unwind_section_name (name
))
1967 hdr
->sh_type
= SHT_C6000_UNWIND
;
1968 hdr
->sh_flags
|= SHF_LINK_ORDER
;
1974 /* Find dynamic relocs for H that apply to read-only sections. */
1977 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
1979 struct elf_dyn_relocs
*p
;
1980 struct elf32_tic6x_link_hash_entry
*eh
1981 = (struct elf32_tic6x_link_hash_entry
*) h
;
1983 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1985 asection
*s
= p
->sec
->output_section
;
1987 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
1993 /* Adjust a symbol defined by a dynamic object and referenced by a
1994 regular object. The current definition is in some section of the
1995 dynamic object, but we're not including those sections. We have to
1996 change the definition to something the rest of the link can
2000 elf32_tic6x_adjust_dynamic_symbol (struct bfd_link_info
*info
,
2001 struct elf_link_hash_entry
*h
)
2003 struct elf32_tic6x_link_hash_table
*htab
;
2007 dynobj
= elf_hash_table (info
)->dynobj
;
2009 /* Make sure we know what is going on here. */
2010 BFD_ASSERT (dynobj
!= NULL
2013 || (h
->def_dynamic
&& h
->ref_regular
&& !h
->def_regular
)));
2015 /* If this is a function, put it in the procedure linkage table. We
2016 will fill in the contents of the procedure linkage table later,
2017 when we know the address of the .got section. */
2018 if (h
->type
== STT_FUNC
2021 if (h
->plt
.refcount
<= 0
2022 || SYMBOL_CALLS_LOCAL (info
, h
)
2023 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
2024 && h
->root
.type
== bfd_link_hash_undefweak
))
2026 /* This case can occur if we saw a PLT32 reloc in an input
2027 file, but the symbol was never referred to by a dynamic
2028 object, or if all references were garbage collected. In
2029 such a case, we don't actually need to build a procedure
2030 linkage table, and we can just do a PC32 reloc instead. */
2031 h
->plt
.offset
= (bfd_vma
) -1;
2038 /* If this is a weak symbol, and there is a real definition, the
2039 processor independent code will have arranged for us to see the
2040 real definition first, and we can just use the same value. */
2041 if (h
->is_weakalias
)
2043 struct elf_link_hash_entry
*def
= weakdef (h
);
2044 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
2045 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
2046 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
2047 h
->non_got_ref
= def
->non_got_ref
;
2051 /* This is a reference to a symbol defined by a dynamic object which
2052 is not a function. */
2054 /* If we are creating a shared library, we must presume that the
2055 only references to the symbol are via the global offset table.
2056 For such cases we need not do anything here; the relocations will
2057 be handled correctly by relocate_section. */
2058 if (bfd_link_pic (info
))
2061 /* If there are no references to this symbol that do not use the
2062 GOT, we don't need to generate a copy reloc. */
2063 if (!h
->non_got_ref
)
2066 /* If -z nocopyreloc was given, we won't generate them either. */
2067 if (info
->nocopyreloc
)
2073 htab
= elf32_tic6x_hash_table (info
);
2077 /* We must allocate the symbol in our .dynbss section, which will
2078 become part of the .bss section of the executable. There will be
2079 an entry for this symbol in the .dynsym section. The dynamic
2080 object will contain position independent code, so all references
2081 from the dynamic object to this symbol will go through the global
2082 offset table. The dynamic linker will use the .dynsym entry to
2083 determine the address it must put in the global offset table, so
2084 both the dynamic object and the regular object will refer to the
2085 same memory location for the variable. */
2087 /* We must generate a R_C6000_COPY reloc to tell the dynamic linker to
2088 copy the initial value out of the dynamic object and into the
2089 runtime process image. */
2090 if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
2092 s
= htab
->elf
.sdynrelro
;
2093 srel
= htab
->elf
.sreldynrelro
;
2097 s
= htab
->elf
.sdynbss
;
2098 srel
= htab
->elf
.srelbss
;
2100 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
2102 srel
->size
+= sizeof (Elf32_External_Rela
);
2106 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
2110 elf32_tic6x_new_section_hook (bfd
*abfd
, asection
*sec
)
2114 /* Allocate target specific section data. */
2115 if (!sec
->used_by_bfd
)
2117 _tic6x_elf_section_data
*sdata
;
2118 bfd_size_type amt
= sizeof (*sdata
);
2120 sdata
= (_tic6x_elf_section_data
*) bfd_zalloc (abfd
, amt
);
2123 sec
->used_by_bfd
= sdata
;
2126 ret
= _bfd_elf_new_section_hook (abfd
, sec
);
2127 sec
->use_rela_p
= elf32_tic6x_tdata (abfd
)->use_rela_p
;
2132 /* Return true if relocation REL against section SEC is a REL rather
2133 than RELA relocation. RELOCS is the first relocation in the
2134 section and ABFD is the bfd that contains SEC. */
2137 elf32_tic6x_rel_relocation_p (bfd
*abfd
, asection
*sec
,
2138 const Elf_Internal_Rela
*relocs
,
2139 const Elf_Internal_Rela
*rel
)
2141 Elf_Internal_Shdr
*rel_hdr
;
2142 const struct elf_backend_data
*bed
;
2144 /* To determine which flavor of relocation this is, we depend on the
2145 fact that the INPUT_SECTION's REL_HDR is read before RELA_HDR. */
2146 rel_hdr
= elf_section_data (sec
)->rel
.hdr
;
2147 if (rel_hdr
== NULL
)
2149 bed
= get_elf_backend_data (abfd
);
2150 return ((size_t) (rel
- relocs
)
2151 < NUM_SHDR_ENTRIES (rel_hdr
) * bed
->s
->int_rels_per_ext_rel
);
2154 /* We need dynamic symbols for every section, since segments can
2155 relocate independently. */
2157 elf32_tic6x_link_omit_section_dynsym (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2158 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
2161 switch (elf_section_data (p
)->this_hdr
.sh_type
)
2165 /* If sh_type is yet undecided, assume it could be
2166 SHT_PROGBITS/SHT_NOBITS. */
2170 /* There shouldn't be section relative relocations
2171 against any other section. */
2178 elf32_tic6x_relocate_section (bfd
*output_bfd
,
2179 struct bfd_link_info
*info
,
2181 asection
*input_section
,
2183 Elf_Internal_Rela
*relocs
,
2184 Elf_Internal_Sym
*local_syms
,
2185 asection
**local_sections
)
2187 struct elf32_tic6x_link_hash_table
*htab
;
2188 Elf_Internal_Shdr
*symtab_hdr
;
2189 struct elf_link_hash_entry
**sym_hashes
;
2190 bfd_vma
*local_got_offsets
;
2191 Elf_Internal_Rela
*rel
;
2192 Elf_Internal_Rela
*relend
;
2193 bfd_boolean ok
= TRUE
;
2195 htab
= elf32_tic6x_hash_table (info
);
2196 symtab_hdr
= & elf_symtab_hdr (input_bfd
);
2197 sym_hashes
= elf_sym_hashes (input_bfd
);
2198 local_got_offsets
= elf_local_got_offsets (input_bfd
);
2200 relend
= relocs
+ input_section
->reloc_count
;
2202 for (rel
= relocs
; rel
< relend
; rel
++)
2205 unsigned long r_symndx
;
2207 reloc_howto_type
*howto
;
2208 Elf_Internal_Sym
*sym
;
2210 struct elf_link_hash_entry
*h
;
2211 bfd_vma off
, off2
, relocation
;
2212 bfd_boolean unresolved_reloc
;
2213 bfd_reloc_status_type r
;
2214 struct bfd_link_hash_entry
*sbh
;
2217 r_type
= ELF32_R_TYPE (rel
->r_info
);
2218 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2220 is_rel
= elf32_tic6x_rel_relocation_p (input_bfd
, input_section
,
2224 elf32_tic6x_info_to_howto_rel (input_bfd
, &bfd_reloc
, rel
);
2226 elf32_tic6x_info_to_howto (input_bfd
, &bfd_reloc
, rel
);
2227 howto
= bfd_reloc
.howto
;
2230 bfd_set_error (bfd_error_bad_value
);
2237 unresolved_reloc
= FALSE
;
2239 if (r_symndx
< symtab_hdr
->sh_info
)
2241 sym
= local_syms
+ r_symndx
;
2242 sec
= local_sections
[r_symndx
];
2243 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
2247 bfd_boolean warned
, ignored
;
2249 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
2250 r_symndx
, symtab_hdr
, sym_hashes
,
2252 unresolved_reloc
, warned
, ignored
);
2255 if (sec
!= NULL
&& discarded_section (sec
))
2256 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
2257 rel
, 1, relend
, howto
, 0, contents
);
2259 if (bfd_link_relocatable (info
))
2263 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
2266 relocation
= sec
->output_offset
+ sym
->st_value
;
2267 r
= _bfd_relocate_contents (howto
, input_bfd
, relocation
,
2268 contents
+ rel
->r_offset
);
2278 case R_C6000_FPHEAD
:
2280 /* No action needed. */
2283 case R_C6000_PCR_S21
:
2284 /* A branch to an undefined weak symbol is turned into a
2285 "b .s2 B3" instruction if the existing insn is of the
2286 form "b .s2 symbol". */
2287 if (h
? h
->root
.type
== bfd_link_hash_undefweak
2288 && (htab
->elf
.splt
== NULL
|| h
->plt
.offset
== (bfd_vma
) -1)
2289 : r_symndx
!= STN_UNDEF
&& bfd_is_und_section (sec
))
2291 unsigned long oldval
;
2292 oldval
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2294 if ((oldval
& 0x7e) == 0x12)
2296 oldval
&= 0xF0000001;
2297 bfd_put_32 (input_bfd
, oldval
| 0x000c0362,
2298 contents
+ rel
->r_offset
);
2305 case R_C6000_PCR_S12
:
2306 case R_C6000_PCR_S10
:
2307 case R_C6000_PCR_S7
:
2309 && h
->plt
.offset
!= (bfd_vma
) -1
2310 && htab
->elf
.splt
!= NULL
)
2312 relocation
= (htab
->elf
.splt
->output_section
->vma
2313 + htab
->elf
.splt
->output_offset
2317 /* Generic PC-relative handling produces a value relative to
2318 the exact location of the relocation. Adjust it to be
2319 relative to the start of the fetch packet instead. */
2320 relocation
+= (input_section
->output_section
->vma
2321 + input_section
->output_offset
2322 + rel
->r_offset
) & 0x1f;
2323 unresolved_reloc
= FALSE
;
2326 case R_C6000_PCR_H16
:
2327 case R_C6000_PCR_L16
:
2328 off
= (input_section
->output_section
->vma
2329 + input_section
->output_offset
2331 /* These must be calculated as R = S - FP(FP(PC) - A).
2332 PC, here, is the value we just computed in OFF. RELOCATION
2333 has the address of S + A. */
2334 relocation
-= rel
->r_addend
;
2335 off2
= ((off
& ~(bfd_vma
)0x1f) - rel
->r_addend
) & (bfd_vma
)~0x1f;
2336 off2
= relocation
- off2
;
2337 relocation
= off
+ off2
;
2340 case R_C6000_DSBT_INDEX
:
2341 relocation
= elf32_tic6x_hash_table (info
)->params
.dsbt_index
;
2342 if (!bfd_link_pic (info
) || relocation
!= 0)
2349 case R_C6000_ABS_S16
:
2350 case R_C6000_ABS_L16
:
2351 case R_C6000_ABS_H16
:
2352 /* When generating a shared object or relocatable executable, these
2353 relocations are copied into the output file to be resolved at
2355 if ((bfd_link_pic (info
) || elf32_tic6x_using_dsbt (output_bfd
))
2356 && (input_section
->flags
& SEC_ALLOC
)
2358 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
2359 || h
->root
.type
!= bfd_link_hash_undefweak
))
2361 Elf_Internal_Rela outrel
;
2362 bfd_boolean skip
, relocate
;
2365 unresolved_reloc
= FALSE
;
2367 sreloc
= elf_section_data (input_section
)->sreloc
;
2368 BFD_ASSERT (sreloc
!= NULL
&& sreloc
->contents
!= NULL
);
2374 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
2376 if (outrel
.r_offset
== (bfd_vma
) -1)
2378 else if (outrel
.r_offset
== (bfd_vma
) -2)
2379 skip
= TRUE
, relocate
= TRUE
;
2380 outrel
.r_offset
+= (input_section
->output_section
->vma
2381 + input_section
->output_offset
);
2384 memset (&outrel
, 0, sizeof outrel
);
2387 && (!bfd_link_pic (info
)
2388 || !SYMBOLIC_BIND (info
, h
)
2389 || !h
->def_regular
))
2391 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
2392 outrel
.r_addend
= rel
->r_addend
;
2398 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2400 if (bfd_is_abs_section (sec
))
2402 else if (sec
== NULL
|| sec
->owner
== NULL
)
2404 bfd_set_error (bfd_error_bad_value
);
2411 osec
= sec
->output_section
;
2412 indx
= elf_section_data (osec
)->dynindx
;
2413 outrel
.r_addend
-= osec
->vma
;
2414 BFD_ASSERT (indx
!= 0);
2417 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
2420 elf32_tic6x_install_rela (output_bfd
, sreloc
, &outrel
);
2422 /* If this reloc is against an external symbol, we do not want to
2423 fiddle with the addend. Otherwise, we need to include the symbol
2424 value so that it becomes an addend for the dynamic reloc. */
2429 /* Generic logic OK. */
2432 case R_C6000_SBR_U15_B
:
2433 case R_C6000_SBR_U15_H
:
2434 case R_C6000_SBR_U15_W
:
2435 case R_C6000_SBR_S16
:
2436 case R_C6000_SBR_L16_B
:
2437 case R_C6000_SBR_L16_H
:
2438 case R_C6000_SBR_L16_W
:
2439 case R_C6000_SBR_H16_B
:
2440 case R_C6000_SBR_H16_H
:
2441 case R_C6000_SBR_H16_W
:
2442 sbh
= bfd_link_hash_lookup (info
->hash
, "__c6xabi_DSBT_BASE",
2443 FALSE
, FALSE
, TRUE
);
2445 && (sbh
->type
== bfd_link_hash_defined
2446 || sbh
->type
== bfd_link_hash_defweak
))
2448 if (h
? (h
->root
.type
== bfd_link_hash_undefweak
2449 && (htab
->elf
.splt
== NULL
2450 || h
->plt
.offset
== (bfd_vma
) -1))
2451 : r_symndx
!= STN_UNDEF
&& bfd_is_und_section (sec
))
2454 relocation
-= (sbh
->u
.def
.value
2455 + sbh
->u
.def
.section
->output_section
->vma
2456 + sbh
->u
.def
.section
->output_offset
);
2460 _bfd_error_handler (_("%B: SB-relative relocation but "
2461 "__c6xabi_DSBT_BASE not defined"),
2468 case R_C6000_SBR_GOT_U15_W
:
2469 case R_C6000_SBR_GOT_L16_W
:
2470 case R_C6000_SBR_GOT_H16_W
:
2471 case R_C6000_EHTYPE
:
2472 /* Relocation is to the entry for this symbol in the global
2474 if (htab
->elf
.sgot
== NULL
)
2481 off
= h
->got
.offset
;
2482 dyn
= htab
->elf
.dynamic_sections_created
;
2483 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
2484 bfd_link_pic (info
),
2486 || (bfd_link_pic (info
)
2487 && SYMBOL_REFERENCES_LOCAL (info
, h
))
2488 || (ELF_ST_VISIBILITY (h
->other
)
2489 && h
->root
.type
== bfd_link_hash_undefweak
))
2491 /* This is actually a static link, or it is a
2492 -Bsymbolic link and the symbol is defined
2493 locally, or the symbol was forced to be local
2494 because of a version file. We must initialize
2495 this entry in the global offset table. Since the
2496 offset must always be a multiple of 4, we use the
2497 least significant bit to record whether we have
2498 initialized it already.
2500 When doing a dynamic link, we create a .rel.got
2501 relocation entry to initialize the value. This
2502 is done in the finish_dynamic_symbol routine. */
2507 bfd_put_32 (output_bfd
, relocation
,
2508 htab
->elf
.sgot
->contents
+ off
);
2511 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
2512 bfd_link_pic (info
),
2514 && !(ELF_ST_VISIBILITY (h
->other
)
2515 && h
->root
.type
== bfd_link_hash_undefweak
))
2516 elf32_tic6x_make_got_dynreloc (output_bfd
, htab
, sec
,
2521 unresolved_reloc
= FALSE
;
2525 if (local_got_offsets
== NULL
)
2528 off
= local_got_offsets
[r_symndx
];
2530 /* The offset must always be a multiple of 4. We use
2531 the least significant bit to record whether we have
2532 already generated the necessary reloc. */
2537 bfd_put_32 (output_bfd
, relocation
,
2538 htab
->elf
.sgot
->contents
+ off
);
2540 if (bfd_link_pic (info
) || elf32_tic6x_using_dsbt (output_bfd
))
2541 elf32_tic6x_make_got_dynreloc (output_bfd
, htab
, sec
, off
);
2543 local_got_offsets
[r_symndx
] |= 1;
2547 if (off
>= (bfd_vma
) -2)
2551 relocation
= (htab
->elf
.sgot
->output_section
->vma
2552 + htab
->elf
.sgot
->output_offset
+ off
2553 - htab
->dsbt
->output_section
->vma
2554 - htab
->dsbt
->output_offset
);
2556 relocation
= (htab
->elf
.sgot
->output_section
->vma
2557 + htab
->elf
.sgot
->output_offset
+ off
2558 - htab
->elf
.sgotplt
->output_section
->vma
2559 - htab
->elf
.sgotplt
->output_offset
);
2561 if (rel
->r_addend
!= 0)
2563 /* We can't do anything for a relocation which is against
2564 a symbol *plus offset*. GOT holds relocations for
2565 symbols. Make this an error; the compiler isn't
2566 allowed to pass us these kinds of things. */
2569 /* xgettext:c-format */
2570 (_("%B, section %A: relocation %s with non-zero addend %Ld"
2571 " against local symbol"),
2574 elf32_tic6x_howto_table
[r_type
].name
,
2578 /* xgettext:c-format */
2579 (_("%B, section %A: relocation %s with non-zero addend %Ld"
2580 " against symbol `%s'"),
2583 elf32_tic6x_howto_table
[r_type
].name
,
2585 h
->root
.root
.string
[0] != '\0' ? h
->root
.root
.string
2586 : _("[whose name is lost]"));
2588 bfd_set_error (bfd_error_bad_value
);
2593 case R_C6000_PREL31
:
2595 && h
->plt
.offset
!= (bfd_vma
) -1
2596 && htab
->elf
.splt
!= NULL
)
2598 relocation
= (htab
->elf
.splt
->output_section
->vma
2599 + htab
->elf
.splt
->output_offset
2605 /* Invalid in relocatable object. */
2607 /* Unknown relocation. */
2608 /* xgettext:c-format */
2609 _bfd_error_handler (_("%B: invalid relocation type %d"),
2615 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
2616 contents
, rel
->r_offset
,
2617 relocation
, rel
->r_addend
);
2620 if (r
== bfd_reloc_ok
2621 && howto
->complain_on_overflow
== complain_overflow_bitfield
)
2623 /* Generic overflow handling accepts cases the ABI says
2624 should be rejected for R_C6000_ABS16 and
2626 bfd_vma value
= (relocation
+ rel
->r_addend
) & 0xffffffff;
2627 bfd_vma sbit
= 1 << (howto
->bitsize
- 1);
2628 bfd_vma sbits
= (-(bfd_vma
) sbit
) & 0xffffffff;
2629 bfd_vma value_sbits
= value
& sbits
;
2631 if (value_sbits
!= 0
2632 && value_sbits
!= sbit
2633 && value_sbits
!= sbits
)
2634 r
= bfd_reloc_overflow
;
2637 if (r
!= bfd_reloc_ok
)
2640 const char *error_message
;
2643 name
= h
->root
.root
.string
;
2646 name
= bfd_elf_string_from_elf_section (input_bfd
,
2647 symtab_hdr
->sh_link
,
2652 name
= bfd_section_name (input_bfd
, sec
);
2657 case bfd_reloc_overflow
:
2658 /* If the overflowing reloc was to an undefined symbol,
2659 we have already printed one error message and there
2660 is no point complaining again. */
2661 if (!h
|| h
->root
.type
!= bfd_link_hash_undefined
)
2662 (*info
->callbacks
->reloc_overflow
)
2663 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
2664 (bfd_vma
) 0, input_bfd
, input_section
, rel
->r_offset
);
2667 case bfd_reloc_undefined
:
2668 (*info
->callbacks
->undefined_symbol
) (info
, name
, input_bfd
,
2670 rel
->r_offset
, TRUE
);
2673 case bfd_reloc_outofrange
:
2674 error_message
= _("out of range");
2677 case bfd_reloc_notsupported
:
2678 error_message
= _("unsupported relocation");
2681 case bfd_reloc_dangerous
:
2682 error_message
= _("dangerous relocation");
2686 error_message
= _("unknown error");
2690 BFD_ASSERT (error_message
!= NULL
);
2691 (*info
->callbacks
->reloc_dangerous
)
2692 (info
, error_message
, input_bfd
, input_section
, rel
->r_offset
);
2702 /* Look through the relocs for a section during the first phase, and
2703 calculate needed space in the global offset table, procedure linkage
2704 table, and dynamic reloc sections. */
2707 elf32_tic6x_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
2708 asection
*sec
, const Elf_Internal_Rela
*relocs
)
2710 struct elf32_tic6x_link_hash_table
*htab
;
2711 Elf_Internal_Shdr
*symtab_hdr
;
2712 struct elf_link_hash_entry
**sym_hashes
;
2713 const Elf_Internal_Rela
*rel
;
2714 const Elf_Internal_Rela
*rel_end
;
2717 if (bfd_link_relocatable (info
))
2720 htab
= elf32_tic6x_hash_table (info
);
2721 symtab_hdr
= &elf_symtab_hdr (abfd
);
2722 sym_hashes
= elf_sym_hashes (abfd
);
2724 /* Create dynamic sections for relocatable executables so that we can
2725 copy relocations. */
2726 if ((bfd_link_pic (info
) || elf32_tic6x_using_dsbt (abfd
))
2727 && ! htab
->elf
.dynamic_sections_created
)
2729 if (! _bfd_elf_link_create_dynamic_sections (abfd
, info
))
2735 rel_end
= relocs
+ sec
->reloc_count
;
2736 for (rel
= relocs
; rel
< rel_end
; rel
++)
2738 unsigned int r_type
;
2739 unsigned int r_symndx
;
2740 struct elf_link_hash_entry
*h
;
2741 Elf_Internal_Sym
*isym
;
2743 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2744 r_type
= ELF32_R_TYPE (rel
->r_info
);
2746 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
2748 /* xgettext:c-format */
2749 _bfd_error_handler (_("%B: bad symbol index: %d"),
2754 if (r_symndx
< symtab_hdr
->sh_info
)
2756 /* A local symbol. */
2757 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
2766 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
2767 while (h
->root
.type
== bfd_link_hash_indirect
2768 || h
->root
.type
== bfd_link_hash_warning
)
2769 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2774 case R_C6000_PCR_S21
:
2775 case R_C6000_PREL31
:
2776 /* This symbol requires a procedure linkage table entry. We
2777 actually build the entry in adjust_dynamic_symbol,
2778 because this might be a case of linking PIC code which is
2779 never referenced by a dynamic object, in which case we
2780 don't need to generate a procedure linkage table entry
2783 /* If this is a local symbol, we resolve it directly without
2784 creating a procedure linkage table entry. */
2789 h
->plt
.refcount
+= 1;
2792 case R_C6000_SBR_GOT_U15_W
:
2793 case R_C6000_SBR_GOT_L16_W
:
2794 case R_C6000_SBR_GOT_H16_W
:
2795 case R_C6000_EHTYPE
:
2796 /* This symbol requires a global offset table entry. */
2799 h
->got
.refcount
+= 1;
2803 bfd_signed_vma
*local_got_refcounts
;
2805 /* This is a global offset table entry for a local symbol. */
2806 local_got_refcounts
= elf_local_got_refcounts (abfd
);
2807 if (local_got_refcounts
== NULL
)
2811 size
= symtab_hdr
->sh_info
;
2812 size
*= (sizeof (bfd_signed_vma
)
2813 + sizeof (bfd_vma
) + sizeof(char));
2814 local_got_refcounts
= bfd_zalloc (abfd
, size
);
2815 if (local_got_refcounts
== NULL
)
2817 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
2819 local_got_refcounts
[r_symndx
] += 1;
2822 if (htab
->elf
.sgot
== NULL
)
2824 if (htab
->elf
.dynobj
== NULL
)
2825 htab
->elf
.dynobj
= abfd
;
2826 if (!_bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
2831 case R_C6000_DSBT_INDEX
:
2832 /* We'd like to check for nonzero dsbt_index here, but it's
2833 set up only after check_relocs is called. Instead, we
2834 store the number of R_C6000_DSBT_INDEX relocs in the
2835 pc_count field, and potentially discard the extra space
2836 in elf32_tic6x_allocate_dynrelocs. */
2837 if (!bfd_link_pic (info
))
2844 case R_C6000_ABS_S16
:
2845 case R_C6000_ABS_L16
:
2846 case R_C6000_ABS_H16
:
2847 /* If we are creating a shared library, and this is a reloc
2848 against a global symbol, or a non PC relative reloc
2849 against a local symbol, then we need to copy the reloc
2850 into the shared library. However, if we are linking with
2851 -Bsymbolic, we do not need to copy a reloc against a
2852 global symbol which is defined in an object we are
2853 including in the link (i.e., DEF_REGULAR is set). At
2854 this point we have not seen all the input files, so it is
2855 possible that DEF_REGULAR is not set now but will be set
2856 later (it is never cleared). In case of a weak definition,
2857 DEF_REGULAR may be cleared later by a strong definition in
2858 a shared library. We account for that possibility below by
2859 storing information in the relocs_copied field of the hash
2860 table entry. A similar situation occurs when creating
2861 shared libraries and symbol visibility changes render the
2864 If on the other hand, we are creating an executable, we
2865 may need to keep relocations for symbols satisfied by a
2866 dynamic library if we manage to avoid copy relocs for the
2868 if ((bfd_link_pic (info
) || elf32_tic6x_using_dsbt (abfd
))
2869 && (sec
->flags
& SEC_ALLOC
) != 0)
2871 struct elf_dyn_relocs
*p
;
2872 struct elf_dyn_relocs
**head
;
2874 /* We must copy these reloc types into the output file.
2875 Create a reloc section in dynobj and make room for
2879 if (htab
->elf
.dynobj
== NULL
)
2880 htab
->elf
.dynobj
= abfd
;
2882 sreloc
= _bfd_elf_make_dynamic_reloc_section
2883 (sec
, htab
->elf
.dynobj
, 2, abfd
, /*rela? */ TRUE
);
2889 /* If this is a global symbol, we count the number of
2890 relocations we need for this symbol. */
2893 head
= &((struct elf32_tic6x_link_hash_entry
*) h
)->dyn_relocs
;
2897 /* Track dynamic relocs needed for local syms too.
2898 We really need local syms available to do this
2903 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
2907 vpp
= &elf_section_data (s
)->local_dynrel
;
2908 head
= (struct elf_dyn_relocs
**)vpp
;
2912 if (p
== NULL
|| p
->sec
!= sec
)
2914 bfd_size_type amt
= sizeof *p
;
2915 p
= bfd_alloc (htab
->elf
.dynobj
, amt
);
2926 if (r_type
== R_C6000_DSBT_INDEX
)
2931 case R_C6000_SBR_U15_B
:
2932 case R_C6000_SBR_U15_H
:
2933 case R_C6000_SBR_U15_W
:
2934 case R_C6000_SBR_S16
:
2935 case R_C6000_SBR_L16_B
:
2936 case R_C6000_SBR_L16_H
:
2937 case R_C6000_SBR_L16_W
:
2938 case R_C6000_SBR_H16_B
:
2939 case R_C6000_SBR_H16_H
:
2940 case R_C6000_SBR_H16_W
:
2941 if (h
!= NULL
&& bfd_link_executable (info
))
2943 /* For B14-relative addresses, we might need a copy
2958 elf32_tic6x_add_symbol_hook (bfd
*abfd
,
2959 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
2960 Elf_Internal_Sym
*sym
,
2961 const char **namep ATTRIBUTE_UNUSED
,
2962 flagword
*flagsp ATTRIBUTE_UNUSED
,
2966 switch (sym
->st_shndx
)
2968 case SHN_TIC6X_SCOMMON
:
2969 *secp
= bfd_make_section_old_way (abfd
, ".scommon");
2970 (*secp
)->flags
|= SEC_IS_COMMON
;
2971 *valp
= sym
->st_size
;
2972 (void) bfd_set_section_alignment (abfd
, *secp
, bfd_log2 (sym
->st_value
));
2980 elf32_tic6x_symbol_processing (bfd
*abfd ATTRIBUTE_UNUSED
, asymbol
*asym
)
2982 elf_symbol_type
*elfsym
;
2984 elfsym
= (elf_symbol_type
*) asym
;
2985 switch (elfsym
->internal_elf_sym
.st_shndx
)
2987 case SHN_TIC6X_SCOMMON
:
2988 if (tic6x_elf_scom_section
.name
== NULL
)
2990 /* Initialize the small common section. */
2991 tic6x_elf_scom_section
.name
= ".scommon";
2992 tic6x_elf_scom_section
.flags
= SEC_IS_COMMON
;
2993 tic6x_elf_scom_section
.output_section
= &tic6x_elf_scom_section
;
2994 tic6x_elf_scom_section
.symbol
= &tic6x_elf_scom_symbol
;
2995 tic6x_elf_scom_section
.symbol_ptr_ptr
= &tic6x_elf_scom_symbol_ptr
;
2996 tic6x_elf_scom_symbol
.name
= ".scommon";
2997 tic6x_elf_scom_symbol
.flags
= BSF_SECTION_SYM
;
2998 tic6x_elf_scom_symbol
.section
= &tic6x_elf_scom_section
;
2999 tic6x_elf_scom_symbol_ptr
= &tic6x_elf_scom_symbol
;
3001 asym
->section
= &tic6x_elf_scom_section
;
3002 asym
->value
= elfsym
->internal_elf_sym
.st_size
;
3008 elf32_tic6x_link_output_symbol_hook (struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3009 const char *name ATTRIBUTE_UNUSED
,
3010 Elf_Internal_Sym
*sym
,
3011 asection
*input_sec
,
3012 struct elf_link_hash_entry
*h ATTRIBUTE_UNUSED
)
3014 /* If we see a common symbol, which implies a relocatable link, then
3015 if a symbol was small common in an input file, mark it as small
3016 common in the output file. */
3017 if (sym
->st_shndx
== SHN_COMMON
&& strcmp (input_sec
->name
, ".scommon") == 0)
3018 sym
->st_shndx
= SHN_TIC6X_SCOMMON
;
3024 elf32_tic6x_section_from_bfd_section (bfd
*abfd ATTRIBUTE_UNUSED
,
3028 if (strcmp (bfd_get_section_name (abfd
, sec
), ".scommon") == 0)
3030 *retval
= SHN_TIC6X_SCOMMON
;
3037 /* Allocate space in .plt, .got and associated reloc sections for
3041 elf32_tic6x_allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
3043 struct bfd_link_info
*info
;
3044 struct elf32_tic6x_link_hash_table
*htab
;
3045 struct elf32_tic6x_link_hash_entry
*eh
;
3046 struct elf_dyn_relocs
*p
;
3048 if (h
->root
.type
== bfd_link_hash_indirect
)
3051 eh
= (struct elf32_tic6x_link_hash_entry
*) h
;
3052 info
= (struct bfd_link_info
*) inf
;
3053 htab
= elf32_tic6x_hash_table (info
);
3055 if (htab
->elf
.dynamic_sections_created
&& h
->plt
.refcount
> 0)
3057 /* Make sure this symbol is output as a dynamic symbol.
3058 Undefined weak syms won't yet be marked as dynamic. */
3059 if (h
->dynindx
== -1 && !h
->forced_local
)
3061 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
3065 if (bfd_link_pic (info
)
3066 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
3068 asection
*s
= htab
->elf
.splt
;
3070 /* If this is the first .plt entry, make room for the special
3073 s
->size
+= PLT_ENTRY_SIZE
;
3075 h
->plt
.offset
= s
->size
;
3077 /* If this symbol is not defined in a regular file, and we are
3078 not generating a shared library, then set the symbol to this
3079 location in the .plt. This is required to make function
3080 pointers compare as equal between the normal executable and
3081 the shared library. */
3082 if (! bfd_link_pic (info
) && !h
->def_regular
)
3084 h
->root
.u
.def
.section
= s
;
3085 h
->root
.u
.def
.value
= h
->plt
.offset
;
3088 /* Make room for this entry. */
3089 s
->size
+= PLT_ENTRY_SIZE
;
3090 /* We also need to make an entry in the .got.plt section, which
3091 will be placed in the .got section by the linker script. */
3092 htab
->elf
.sgotplt
->size
+= 4;
3093 /* We also need to make an entry in the .rel.plt section. */
3094 htab
->elf
.srelplt
->size
+= sizeof (Elf32_External_Rela
);
3098 h
->plt
.offset
= (bfd_vma
) -1;
3104 h
->plt
.offset
= (bfd_vma
) -1;
3108 if (h
->got
.refcount
> 0)
3112 /* Make sure this symbol is output as a dynamic symbol.
3113 Undefined weak syms won't yet be marked as dynamic. */
3114 if (h
->dynindx
== -1
3115 && !h
->forced_local
)
3117 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
3122 h
->got
.offset
= s
->size
;
3125 if (!(ELF_ST_VISIBILITY (h
->other
)
3126 && h
->root
.type
== bfd_link_hash_undefweak
))
3127 htab
->elf
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
3130 h
->got
.offset
= (bfd_vma
) -1;
3132 if (eh
->dyn_relocs
== NULL
)
3135 /* Discard relocs on undefined weak syms with non-default
3137 if (bfd_link_pic (info
) || elf32_tic6x_using_dsbt (htab
->obfd
))
3139 /* We use the pc_count field to hold the number of
3140 R_C6000_DSBT_INDEX relocs. */
3141 if (htab
->params
.dsbt_index
!= 0)
3143 struct elf_dyn_relocs
**pp
;
3145 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
3147 p
->count
-= p
->pc_count
;
3156 if (eh
->dyn_relocs
!= NULL
3157 && h
->root
.type
== bfd_link_hash_undefweak
)
3159 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
3160 eh
->dyn_relocs
= NULL
;
3162 /* Make sure undefined weak symbols are output as a dynamic
3164 else if (h
->dynindx
== -1
3165 && !h
->forced_local
)
3167 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
3173 /* Finally, allocate space. */
3174 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
3178 sreloc
= elf_section_data (p
->sec
)->sreloc
;
3180 BFD_ASSERT (sreloc
!= NULL
);
3181 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
3187 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
3188 read-only sections. */
3191 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info_p
)
3195 if (h
->root
.type
== bfd_link_hash_indirect
)
3198 sec
= readonly_dynrelocs (h
);
3201 struct bfd_link_info
*info
= (struct bfd_link_info
*) info_p
;
3203 info
->flags
|= DF_TEXTREL
;
3204 info
->callbacks
->minfo
3205 (_("%B: dynamic relocation against `%T' in read-only section `%A'\n"),
3206 sec
->owner
, h
->root
.root
.string
, sec
);
3208 /* Not an error, just cut short the traversal. */
3214 /* Set the sizes of the dynamic sections. */
3217 elf32_tic6x_size_dynamic_sections (bfd
*output_bfd
, struct bfd_link_info
*info
)
3219 struct elf32_tic6x_link_hash_table
*htab
;
3225 htab
= elf32_tic6x_hash_table (info
);
3226 dynobj
= htab
->elf
.dynobj
;
3230 if (htab
->elf
.dynamic_sections_created
)
3232 /* Set the contents of the .interp section to the interpreter. */
3233 if (bfd_link_executable (info
) && !info
->nointerp
)
3235 s
= bfd_get_linker_section (dynobj
, ".interp");
3238 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
3239 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
3243 /* Set up .got offsets for local syms, and space for local dynamic
3245 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
3247 bfd_signed_vma
*local_got
;
3248 bfd_signed_vma
*end_local_got
;
3249 bfd_size_type locsymcount
;
3250 Elf_Internal_Shdr
*symtab_hdr
;
3253 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
3255 struct elf_dyn_relocs
*p
;
3257 for (p
= ((struct elf_dyn_relocs
*)
3258 elf_section_data (s
)->local_dynrel
);
3262 if (!bfd_is_abs_section (p
->sec
)
3263 && bfd_is_abs_section (p
->sec
->output_section
))
3265 /* Input section has been discarded, either because
3266 it is a copy of a linkonce section or due to
3267 linker script /DISCARD/, so we'll be discarding
3270 else if (p
->count
!= 0)
3272 srel
= elf_section_data (p
->sec
)->sreloc
;
3273 srel
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
3274 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
3275 info
->flags
|= DF_TEXTREL
;
3280 local_got
= elf_local_got_refcounts (ibfd
);
3284 symtab_hdr
= &elf_symtab_hdr (ibfd
);
3285 locsymcount
= symtab_hdr
->sh_info
;
3286 end_local_got
= local_got
+ locsymcount
;
3288 srel
= htab
->elf
.srelgot
;
3289 for (; local_got
< end_local_got
; ++local_got
)
3293 *local_got
= s
->size
;
3296 if (bfd_link_pic (info
) || elf32_tic6x_using_dsbt (output_bfd
))
3298 srel
->size
+= sizeof (Elf32_External_Rela
);
3302 *local_got
= (bfd_vma
) -1;
3306 /* Allocate global sym .plt and .got entries, and space for global
3307 sym dynamic relocs. */
3308 elf_link_hash_traverse (&htab
->elf
, elf32_tic6x_allocate_dynrelocs
, info
);
3310 /* We now have determined the sizes of the various dynamic sections.
3311 Allocate memory for them. */
3313 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
3315 bfd_boolean strip_section
= TRUE
;
3317 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
3320 if (s
== htab
->dsbt
)
3321 s
->size
= 4 * htab
->params
.dsbt_size
;
3322 else if (s
== htab
->elf
.splt
3323 || s
== htab
->elf
.sgot
3324 || s
== htab
->elf
.sgotplt
3325 || s
== htab
->elf
.sdynbss
3326 || s
== htab
->elf
.sdynrelro
)
3328 /* Strip this section if we don't need it; see the
3330 /* We'd like to strip these sections if they aren't needed, but if
3331 we've exported dynamic symbols from them we must leave them.
3332 It's too late to tell BFD to get rid of the symbols. */
3334 if (htab
->elf
.hplt
!= NULL
)
3335 strip_section
= FALSE
;
3337 /* Round up the size of the PLT section to a multiple of 32. */
3338 if (s
== htab
->elf
.splt
&& s
->size
> 0)
3339 s
->size
= (s
->size
+ 31) & ~(bfd_vma
)31;
3341 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
3344 && s
!= htab
->elf
.srelplt
)
3347 /* We use the reloc_count field as a counter if we need
3348 to copy relocs into the output file. */
3353 /* It's not one of our sections, so don't allocate space. */
3359 /* If we don't need this section, strip it from the
3360 output file. This is mostly to handle .rel.bss and
3361 .rel.plt. We must create both sections in
3362 create_dynamic_sections, because they must be created
3363 before the linker maps input sections to output
3364 sections. The linker does that before
3365 adjust_dynamic_symbol is called, and it is that
3366 function which decides whether anything needs to go
3367 into these sections. */
3369 s
->flags
|= SEC_EXCLUDE
;
3373 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
3376 /* Allocate memory for the section contents. We use bfd_zalloc
3377 here in case unused entries are not reclaimed before the
3378 section's contents are written out. This should not happen,
3379 but this way if it does, we get a R_C6000_NONE reloc instead
3381 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
3382 if (s
->contents
== NULL
)
3386 if (htab
->elf
.dynamic_sections_created
)
3388 /* Add some entries to the .dynamic section. We fill in the
3389 values later, in elf32_tic6x_finish_dynamic_sections, but we
3390 must add the entries now so that we get the correct size for
3391 the .dynamic section. The DT_DEBUG entry is filled in by the
3392 dynamic linker and used by the debugger. */
3393 #define add_dynamic_entry(TAG, VAL) \
3394 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3396 if (bfd_link_executable (info
))
3398 if (!add_dynamic_entry (DT_DEBUG
, 0))
3402 if (!add_dynamic_entry (DT_C6000_DSBT_BASE
, 0)
3403 || !add_dynamic_entry (DT_C6000_DSBT_SIZE
, htab
->params
.dsbt_size
)
3404 || !add_dynamic_entry (DT_C6000_DSBT_INDEX
,
3405 htab
->params
.dsbt_index
))
3408 if (htab
->elf
.splt
->size
!= 0)
3410 if (!add_dynamic_entry (DT_PLTGOT
, 0)
3411 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
3412 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
3413 || !add_dynamic_entry (DT_JMPREL
, 0))
3419 if (!add_dynamic_entry (DT_RELA
, 0)
3420 || !add_dynamic_entry (DT_RELASZ
, 0)
3421 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
3424 /* If any dynamic relocs apply to a read-only section,
3425 then we need a DT_TEXTREL entry. */
3426 if ((info
->flags
& DF_TEXTREL
) == 0)
3427 elf_link_hash_traverse (&htab
->elf
, maybe_set_textrel
, info
);
3429 if ((info
->flags
& DF_TEXTREL
) != 0)
3431 if (!add_dynamic_entry (DT_TEXTREL
, 0))
3436 #undef add_dynamic_entry
3441 /* This function is called after all the input files have been read,
3442 and the input sections have been assigned to output sections. */
3445 elf32_tic6x_always_size_sections (bfd
*output_bfd
, struct bfd_link_info
*info
)
3447 if (elf32_tic6x_using_dsbt (output_bfd
) && !bfd_link_relocatable (info
)
3448 && !bfd_elf_stack_segment_size (output_bfd
, info
,
3449 "__stacksize", DEFAULT_STACK_SIZE
))
3456 elf32_tic6x_finish_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
3457 struct bfd_link_info
*info
)
3459 struct elf32_tic6x_link_hash_table
*htab
;
3463 htab
= elf32_tic6x_hash_table (info
);
3464 dynobj
= htab
->elf
.dynobj
;
3465 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
3467 if (elf_hash_table (info
)->dynamic_sections_created
)
3469 Elf32_External_Dyn
* dyncon
;
3470 Elf32_External_Dyn
* dynconend
;
3472 BFD_ASSERT (sdyn
!= NULL
);
3474 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
3475 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
3477 for (; dyncon
< dynconend
; dyncon
++)
3479 Elf_Internal_Dyn dyn
;
3482 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
3489 case DT_C6000_DSBT_BASE
:
3491 dyn
.d_un
.d_ptr
= (s
->output_section
->vma
+ s
->output_offset
);
3495 s
= htab
->elf
.sgotplt
;
3496 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
3500 s
= htab
->elf
.srelplt
;
3501 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
3505 s
= htab
->elf
.srelplt
;
3506 dyn
.d_un
.d_val
= s
->size
;
3509 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3512 /* Fill in the first entry in the procedure linkage table. */
3513 if (htab
->elf
.splt
&& htab
->elf
.splt
->size
> 0)
3515 bfd_vma got_offs
= (htab
->elf
.sgotplt
->output_section
->vma
3516 + htab
->elf
.sgotplt
->output_offset
3517 - htab
->dsbt
->output_section
->vma
3518 - htab
->dsbt
->output_offset
) / 4;
3520 /* ldw .D2T2 *+b14[$GOT(0)],b2 */
3521 bfd_put_32 (output_bfd
, got_offs
<< 8 | 0x0100006e,
3522 htab
->elf
.splt
->contents
);
3523 /* ldw .D2T2 *+b14[$GOT(4)],b1 */
3524 bfd_put_32 (output_bfd
, (got_offs
+ 1) << 8 | 0x0080006e,
3525 htab
->elf
.splt
->contents
+ 4);
3527 bfd_put_32 (output_bfd
, 0x00004000,
3528 htab
->elf
.splt
->contents
+ 8);
3530 bfd_put_32 (output_bfd
, 0x00080362,
3531 htab
->elf
.splt
->contents
+ 12);
3533 bfd_put_32 (output_bfd
, 0x00008000,
3534 htab
->elf
.splt
->contents
+ 16);
3536 elf_section_data (htab
->elf
.splt
->output_section
)
3537 ->this_hdr
.sh_entsize
= PLT_ENTRY_SIZE
;
3544 /* Return address for Ith PLT stub in section PLT, for relocation REL
3545 or (bfd_vma) -1 if it should not be included. */
3548 elf32_tic6x_plt_sym_val (bfd_vma i
, const asection
*plt
,
3549 const arelent
*rel ATTRIBUTE_UNUSED
)
3551 return plt
->vma
+ (i
+ 1) * PLT_ENTRY_SIZE
;
3555 elf32_tic6x_obj_attrs_arg_type (int tag
)
3557 if (tag
== Tag_ABI_compatibility
)
3558 return ATTR_TYPE_FLAG_INT_VAL
| ATTR_TYPE_FLAG_STR_VAL
;
3560 return ATTR_TYPE_FLAG_STR_VAL
;
3562 return ATTR_TYPE_FLAG_INT_VAL
;
3566 elf32_tic6x_obj_attrs_order (int num
)
3568 if (num
== LEAST_KNOWN_OBJ_ATTRIBUTE
)
3569 return Tag_ABI_conformance
;
3570 if ((num
- 1) < Tag_ABI_conformance
)
3576 elf32_tic6x_obj_attrs_handle_unknown (bfd
*abfd
, int tag
)
3578 if ((tag
& 127) < 64)
3581 /* xgettext:c-format */
3582 (_("%B: error: unknown mandatory EABI object attribute %d"),
3584 bfd_set_error (bfd_error_bad_value
);
3590 /* xgettext:c-format */
3591 (_("%B: warning: unknown EABI object attribute %d"),
3597 /* Merge the Tag_ISA attribute values ARCH1 and ARCH2
3598 and return the merged value. At present, all merges succeed, so no
3599 return value for errors is defined. */
3602 elf32_tic6x_merge_arch_attributes (int arch1
, int arch2
)
3604 int min_arch
, max_arch
;
3606 min_arch
= (arch1
< arch2
? arch1
: arch2
);
3607 max_arch
= (arch1
> arch2
? arch1
: arch2
);
3609 /* In most cases, the numerically greatest value is the correct
3610 merged value, but merging C64 and C67 results in C674X. */
3611 if ((min_arch
== C6XABI_Tag_ISA_C67X
3612 || min_arch
== C6XABI_Tag_ISA_C67XP
)
3613 && (max_arch
== C6XABI_Tag_ISA_C64X
3614 || max_arch
== C6XABI_Tag_ISA_C64XP
))
3615 return C6XABI_Tag_ISA_C674X
;
3620 /* Convert a Tag_ABI_array_object_alignment or
3621 Tag_ABI_array_object_align_expected tag value TAG to a
3622 corresponding alignment value; return the alignment, or -1 for an
3623 unknown tag value. */
3626 elf32_tic6x_tag_to_array_alignment (int tag
)
3644 /* Convert a Tag_ABI_array_object_alignment or
3645 Tag_ABI_array_object_align_expected alignment ALIGN to a
3646 corresponding tag value; return the tag value. */
3649 elf32_tic6x_array_alignment_to_tag (int align
)
3667 /* Merge attributes from IBFD and OBFD, returning TRUE if the merge
3668 succeeded, FALSE otherwise. */
3671 elf32_tic6x_merge_attributes (bfd
*ibfd
, struct bfd_link_info
*info
)
3673 bfd
*obfd
= info
->output_bfd
;
3674 bfd_boolean result
= TRUE
;
3675 obj_attribute
*in_attr
;
3676 obj_attribute
*out_attr
;
3678 int array_align_in
, array_align_out
, array_expect_in
, array_expect_out
;
3680 if (!elf_known_obj_attributes_proc (obfd
)[0].i
)
3682 /* This is the first object. Copy the attributes. */
3683 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
3685 out_attr
= elf_known_obj_attributes_proc (obfd
);
3687 /* Use the Tag_null value to indicate the attributes have been
3694 in_attr
= elf_known_obj_attributes_proc (ibfd
);
3695 out_attr
= elf_known_obj_attributes_proc (obfd
);
3697 /* No specification yet for handling of unknown attributes, so just
3698 ignore them and handle known ones. */
3700 if (out_attr
[Tag_ABI_stack_align_preserved
].i
3701 < in_attr
[Tag_ABI_stack_align_needed
].i
)
3704 /* xgettext:c-format */
3705 (_("error: %B requires more stack alignment than %B preserves"),
3709 if (in_attr
[Tag_ABI_stack_align_preserved
].i
3710 < out_attr
[Tag_ABI_stack_align_needed
].i
)
3713 /* xgettext:c-format */
3714 (_("error: %B requires more stack alignment than %B preserves"),
3719 array_align_in
= elf32_tic6x_tag_to_array_alignment
3720 (in_attr
[Tag_ABI_array_object_alignment
].i
);
3721 if (array_align_in
== -1)
3724 (_("error: unknown Tag_ABI_array_object_alignment value in %B"),
3728 array_align_out
= elf32_tic6x_tag_to_array_alignment
3729 (out_attr
[Tag_ABI_array_object_alignment
].i
);
3730 if (array_align_out
== -1)
3733 (_("error: unknown Tag_ABI_array_object_alignment value in %B"),
3737 array_expect_in
= elf32_tic6x_tag_to_array_alignment
3738 (in_attr
[Tag_ABI_array_object_align_expected
].i
);
3739 if (array_expect_in
== -1)
3742 (_("error: unknown Tag_ABI_array_object_align_expected value in %B"),
3746 array_expect_out
= elf32_tic6x_tag_to_array_alignment
3747 (out_attr
[Tag_ABI_array_object_align_expected
].i
);
3748 if (array_expect_out
== -1)
3751 (_("error: unknown Tag_ABI_array_object_align_expected value in %B"),
3756 if (array_align_out
< array_expect_in
)
3759 /* xgettext:c-format */
3760 (_("error: %B requires more array alignment than %B preserves"),
3764 if (array_align_in
< array_expect_out
)
3767 /* xgettext:c-format */
3768 (_("error: %B requires more array alignment than %B preserves"),
3773 for (i
= LEAST_KNOWN_OBJ_ATTRIBUTE
; i
< NUM_KNOWN_OBJ_ATTRIBUTES
; i
++)
3778 out_attr
[i
].i
= elf32_tic6x_merge_arch_attributes (in_attr
[i
].i
,
3782 case Tag_ABI_wchar_t
:
3783 if (out_attr
[i
].i
== 0)
3784 out_attr
[i
].i
= in_attr
[i
].i
;
3785 if (out_attr
[i
].i
!= 0
3786 && in_attr
[i
].i
!= 0
3787 && out_attr
[i
].i
!= in_attr
[i
].i
)
3790 /* xgettext:c-format */
3791 (_("warning: %B and %B differ in wchar_t size"), obfd
, ibfd
);
3795 case Tag_ABI_stack_align_needed
:
3796 if (out_attr
[i
].i
< in_attr
[i
].i
)
3797 out_attr
[i
].i
= in_attr
[i
].i
;
3800 case Tag_ABI_stack_align_preserved
:
3801 if (out_attr
[i
].i
> in_attr
[i
].i
)
3802 out_attr
[i
].i
= in_attr
[i
].i
;
3806 if (out_attr
[i
].i
!= in_attr
[i
].i
)
3809 /* xgettext:c-format */
3810 (_("warning: %B and %B differ in whether code is "
3811 "compiled for DSBT"),
3818 if (out_attr
[i
].i
> in_attr
[i
].i
)
3819 out_attr
[i
].i
= in_attr
[i
].i
;
3822 case Tag_ABI_array_object_alignment
:
3823 if (array_align_out
!= -1
3824 && array_align_in
!= -1
3825 && array_align_out
> array_align_in
)
3827 = elf32_tic6x_array_alignment_to_tag (array_align_in
);
3830 case Tag_ABI_array_object_align_expected
:
3831 if (array_expect_out
!= -1
3832 && array_expect_in
!= -1
3833 && array_expect_out
< array_expect_in
)
3835 = elf32_tic6x_array_alignment_to_tag (array_expect_in
);
3838 case Tag_ABI_conformance
:
3839 /* Merging for this attribute is not specified. As on ARM,
3840 treat a missing attribute as no claim to conform and only
3841 merge identical values. */
3842 if (out_attr
[i
].s
== NULL
3843 || in_attr
[i
].s
== NULL
3844 || strcmp (out_attr
[i
].s
,
3846 out_attr
[i
].s
= NULL
;
3849 case Tag_ABI_compatibility
:
3850 /* Merged in _bfd_elf_merge_object_attributes. */
3855 = result
&& _bfd_elf_merge_unknown_attribute_low (ibfd
, obfd
, i
);
3859 if (in_attr
[i
].type
&& !out_attr
[i
].type
)
3860 out_attr
[i
].type
= in_attr
[i
].type
;
3863 /* Merge Tag_ABI_compatibility attributes and any common GNU ones. */
3864 if (!_bfd_elf_merge_object_attributes (ibfd
, info
))
3867 result
&= _bfd_elf_merge_unknown_attribute_list (ibfd
, obfd
);
3873 elf32_tic6x_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
3875 if (!_bfd_generic_verify_endian_match (ibfd
, info
))
3878 if (! is_tic6x_elf (ibfd
) || ! is_tic6x_elf (info
->output_bfd
))
3881 if (!elf32_tic6x_merge_attributes (ibfd
, info
))
3887 /* Add a new unwind edit to the list described by HEAD, TAIL. If TINDEX is zero,
3888 adds the edit to the start of the list. (The list must be built in order of
3889 ascending TINDEX: the function's callers are primarily responsible for
3890 maintaining that condition). */
3893 elf32_tic6x_add_unwind_table_edit (tic6x_unwind_table_edit
**head
,
3894 tic6x_unwind_table_edit
**tail
,
3895 tic6x_unwind_edit_type type
,
3896 asection
*linked_section
,
3897 unsigned int tindex
)
3899 tic6x_unwind_table_edit
*new_edit
= (tic6x_unwind_table_edit
*)
3900 xmalloc (sizeof (tic6x_unwind_table_edit
));
3902 new_edit
->type
= type
;
3903 new_edit
->linked_section
= linked_section
;
3904 new_edit
->index
= tindex
;
3908 new_edit
->next
= NULL
;
3911 (*tail
)->next
= new_edit
;
3920 new_edit
->next
= *head
;
3929 static _tic6x_elf_section_data
*
3930 get_tic6x_elf_section_data (asection
* sec
)
3932 if (sec
&& sec
->owner
&& is_tic6x_elf (sec
->owner
))
3933 return elf32_tic6x_section_data (sec
);
3939 /* Increase the size of EXIDX_SEC by ADJUST bytes. ADJUST must be negative. */
3941 elf32_tic6x_adjust_exidx_size (asection
*exidx_sec
, int adjust
)
3945 if (!exidx_sec
->rawsize
)
3946 exidx_sec
->rawsize
= exidx_sec
->size
;
3948 bfd_set_section_size (exidx_sec
->owner
, exidx_sec
, exidx_sec
->size
+ adjust
);
3949 out_sec
= exidx_sec
->output_section
;
3950 /* Adjust size of output section. */
3951 bfd_set_section_size (out_sec
->owner
, out_sec
, out_sec
->size
+adjust
);
3954 /* Insert an EXIDX_CANTUNWIND marker at the end of a section. */
3956 elf32_tic6x_insert_cantunwind_after (asection
*text_sec
, asection
*exidx_sec
)
3958 struct _tic6x_elf_section_data
*exidx_data
;
3960 exidx_data
= get_tic6x_elf_section_data (exidx_sec
);
3961 elf32_tic6x_add_unwind_table_edit (
3962 &exidx_data
->u
.exidx
.unwind_edit_list
,
3963 &exidx_data
->u
.exidx
.unwind_edit_tail
,
3964 INSERT_EXIDX_CANTUNWIND_AT_END
, text_sec
, UINT_MAX
);
3966 elf32_tic6x_adjust_exidx_size (exidx_sec
, 8);
3969 /* Scan .cx6abi.exidx tables, and create a list describing edits which
3970 should be made to those tables, such that:
3972 1. Regions without unwind data are marked with EXIDX_CANTUNWIND entries.
3973 2. Duplicate entries are merged together (EXIDX_CANTUNWIND, or unwind
3974 codes which have been inlined into the index).
3976 If MERGE_EXIDX_ENTRIES is false, duplicate entries are not merged.
3978 The edits are applied when the tables are written
3979 (in elf32_tic6x_write_section).
3983 elf32_tic6x_fix_exidx_coverage (asection
**text_section_order
,
3984 unsigned int num_text_sections
,
3985 struct bfd_link_info
*info
,
3986 bfd_boolean merge_exidx_entries
)
3989 unsigned int last_second_word
= 0, i
;
3990 asection
*last_exidx_sec
= NULL
;
3991 asection
*last_text_sec
= NULL
;
3992 int last_unwind_type
= -1;
3994 /* Walk over all EXIDX sections, and create backlinks from the corrsponding
3996 for (inp
= info
->input_bfds
; inp
!= NULL
; inp
= inp
->link
.next
)
4000 for (sec
= inp
->sections
; sec
!= NULL
; sec
= sec
->next
)
4002 struct bfd_elf_section_data
*elf_sec
= elf_section_data (sec
);
4003 Elf_Internal_Shdr
*hdr
= &elf_sec
->this_hdr
;
4005 if (!hdr
|| hdr
->sh_type
!= SHT_C6000_UNWIND
)
4008 if (elf_sec
->linked_to
)
4010 Elf_Internal_Shdr
*linked_hdr
4011 = &elf_section_data (elf_sec
->linked_to
)->this_hdr
;
4012 struct _tic6x_elf_section_data
*linked_sec_tic6x_data
4013 = get_tic6x_elf_section_data (linked_hdr
->bfd_section
);
4015 if (linked_sec_tic6x_data
== NULL
)
4018 /* Link this .c6xabi.exidx section back from the
4019 text section it describes. */
4020 linked_sec_tic6x_data
->u
.text
.tic6x_exidx_sec
= sec
;
4025 /* Walk all text sections in order of increasing VMA. Eilminate duplicate
4026 index table entries (EXIDX_CANTUNWIND and inlined unwind opcodes),
4027 and add EXIDX_CANTUNWIND entries for sections with no unwind table data. */
4029 for (i
= 0; i
< num_text_sections
; i
++)
4031 asection
*sec
= text_section_order
[i
];
4032 asection
*exidx_sec
;
4033 struct _tic6x_elf_section_data
*tic6x_data
4034 = get_tic6x_elf_section_data (sec
);
4035 struct _tic6x_elf_section_data
*exidx_data
;
4036 bfd_byte
*contents
= NULL
;
4037 int deleted_exidx_bytes
= 0;
4039 tic6x_unwind_table_edit
*unwind_edit_head
= NULL
;
4040 tic6x_unwind_table_edit
*unwind_edit_tail
= NULL
;
4041 Elf_Internal_Shdr
*hdr
;
4044 if (tic6x_data
== NULL
)
4047 exidx_sec
= tic6x_data
->u
.text
.tic6x_exidx_sec
;
4048 if (exidx_sec
== NULL
)
4050 /* Section has no unwind data. */
4051 if (last_unwind_type
== 0 || !last_exidx_sec
)
4054 /* Ignore zero sized sections. */
4058 elf32_tic6x_insert_cantunwind_after (last_text_sec
, last_exidx_sec
);
4059 last_unwind_type
= 0;
4063 /* Skip /DISCARD/ sections. */
4064 if (bfd_is_abs_section (exidx_sec
->output_section
))
4067 hdr
= &elf_section_data (exidx_sec
)->this_hdr
;
4068 if (hdr
->sh_type
!= SHT_C6000_UNWIND
)
4071 exidx_data
= get_tic6x_elf_section_data (exidx_sec
);
4072 if (exidx_data
== NULL
)
4075 ibfd
= exidx_sec
->owner
;
4077 if (hdr
->contents
!= NULL
)
4078 contents
= hdr
->contents
;
4079 else if (! bfd_malloc_and_get_section (ibfd
, exidx_sec
, &contents
))
4083 for (j
= 0; j
< hdr
->sh_size
; j
+= 8)
4085 unsigned int second_word
= bfd_get_32 (ibfd
, contents
+ j
+ 4);
4089 /* An EXIDX_CANTUNWIND entry. */
4090 if (second_word
== 1)
4092 if (last_unwind_type
== 0)
4096 /* Inlined unwinding data. Merge if equal to previous. */
4097 else if ((second_word
& 0x80000000) != 0)
4099 if (merge_exidx_entries
4100 && last_second_word
== second_word
4101 && last_unwind_type
== 1)
4104 last_second_word
= second_word
;
4106 /* Normal table entry. In theory we could merge these too,
4107 but duplicate entries are likely to be much less common. */
4113 elf32_tic6x_add_unwind_table_edit (&unwind_edit_head
,
4114 &unwind_edit_tail
, DELETE_EXIDX_ENTRY
, NULL
, j
/ 8);
4116 deleted_exidx_bytes
+= 8;
4119 last_unwind_type
= unwind_type
;
4122 /* Free contents if we allocated it ourselves. */
4123 if (contents
!= hdr
->contents
)
4126 /* Record edits to be applied later (in elf32_tic6x_write_section). */
4127 exidx_data
->u
.exidx
.unwind_edit_list
= unwind_edit_head
;
4128 exidx_data
->u
.exidx
.unwind_edit_tail
= unwind_edit_tail
;
4130 if (deleted_exidx_bytes
> 0)
4131 elf32_tic6x_adjust_exidx_size (exidx_sec
, -deleted_exidx_bytes
);
4133 last_exidx_sec
= exidx_sec
;
4134 last_text_sec
= sec
;
4137 /* Add terminating CANTUNWIND entry. */
4138 if (last_exidx_sec
&& last_unwind_type
!= 0)
4139 elf32_tic6x_insert_cantunwind_after (last_text_sec
, last_exidx_sec
);
4144 /* Add ADDEND to lower 31 bits of VAL, leaving other bits unmodified. */
4146 static unsigned long
4147 elf32_tic6x_add_low31 (unsigned long val
, bfd_vma addend
)
4149 return (val
& ~0x7ffffffful
) | ((val
+ addend
) & 0x7ffffffful
);
4152 /* Copy an .c6xabi.exidx table entry, adding OFFSET to (applied) PREL31
4153 relocations. OFFSET is in bytes, and will be scaled before encoding. */
4157 elf32_tic6x_copy_exidx_entry (bfd
*output_bfd
, bfd_byte
*to
, bfd_byte
*from
,
4160 unsigned long first_word
= bfd_get_32 (output_bfd
, from
);
4161 unsigned long second_word
= bfd_get_32 (output_bfd
, from
+ 4);
4164 /* High bit of first word is supposed to be zero. */
4165 if ((first_word
& 0x80000000ul
) == 0)
4166 first_word
= elf32_tic6x_add_low31 (first_word
, offset
);
4168 /* If the high bit of the first word is clear, and the bit pattern is not 0x1
4169 (EXIDX_CANTUNWIND), this is an offset to an .c6xabi.extab entry. */
4170 if ((second_word
!= 0x1) && ((second_word
& 0x80000000ul
) == 0))
4171 second_word
= elf32_tic6x_add_low31 (second_word
, offset
);
4173 bfd_put_32 (output_bfd
, first_word
, to
);
4174 bfd_put_32 (output_bfd
, second_word
, to
+ 4);
4177 /* Do the actual mangling of exception index tables. */
4180 elf32_tic6x_write_section (bfd
*output_bfd
,
4181 struct bfd_link_info
*link_info
,
4185 _tic6x_elf_section_data
*tic6x_data
;
4186 struct elf32_tic6x_link_hash_table
*globals
4187 = elf32_tic6x_hash_table (link_info
);
4188 bfd_vma offset
= sec
->output_section
->vma
+ sec
->output_offset
;
4190 if (globals
== NULL
)
4193 /* If this section has not been allocated an _tic6x_elf_section_data
4194 structure then we cannot record anything. */
4195 tic6x_data
= get_tic6x_elf_section_data (sec
);
4196 if (tic6x_data
== NULL
)
4199 if (tic6x_data
->elf
.this_hdr
.sh_type
!= SHT_C6000_UNWIND
)
4202 tic6x_unwind_table_edit
*edit_node
4203 = tic6x_data
->u
.exidx
.unwind_edit_list
;
4204 /* Now, sec->size is the size of the section we will write. The original
4205 size (before we merged duplicate entries and inserted EXIDX_CANTUNWIND
4206 markers) was sec->rawsize. (This isn't the case if we perform no
4207 edits, then rawsize will be zero and we should use size). */
4208 bfd_byte
*edited_contents
= (bfd_byte
*) bfd_malloc (sec
->size
);
4209 unsigned int input_size
= sec
->rawsize
? sec
->rawsize
: sec
->size
;
4210 unsigned int in_index
, out_index
;
4211 bfd_vma add_to_offsets
= 0;
4213 for (in_index
= 0, out_index
= 0; in_index
* 8 < input_size
|| edit_node
;)
4217 unsigned int edit_index
= edit_node
->index
;
4219 if (in_index
< edit_index
&& in_index
* 8 < input_size
)
4221 elf32_tic6x_copy_exidx_entry (output_bfd
,
4222 edited_contents
+ out_index
* 8,
4223 contents
+ in_index
* 8, add_to_offsets
);
4227 else if (in_index
== edit_index
4228 || (in_index
* 8 >= input_size
4229 && edit_index
== UINT_MAX
))
4231 switch (edit_node
->type
)
4233 case DELETE_EXIDX_ENTRY
:
4235 add_to_offsets
+= 8;
4238 case INSERT_EXIDX_CANTUNWIND_AT_END
:
4240 asection
*text_sec
= edit_node
->linked_section
;
4241 bfd_vma text_offset
= text_sec
->output_section
->vma
4242 + text_sec
->output_offset
4244 bfd_vma exidx_offset
= offset
+ out_index
* 8;
4245 unsigned long prel31_offset
;
4247 /* Note: this is meant to be equivalent to an
4248 R_C6000_PREL31 relocation. These synthetic
4249 EXIDX_CANTUNWIND markers are not relocated by the
4250 usual BFD method. */
4251 prel31_offset
= ((text_offset
- exidx_offset
) >> 1)
4254 /* First address we can't unwind. */
4255 bfd_put_32 (output_bfd
, prel31_offset
,
4256 &edited_contents
[out_index
* 8]);
4258 /* Code for EXIDX_CANTUNWIND. */
4259 bfd_put_32 (output_bfd
, 0x1,
4260 &edited_contents
[out_index
* 8 + 4]);
4263 add_to_offsets
-= 8;
4268 edit_node
= edit_node
->next
;
4273 /* No more edits, copy remaining entries verbatim. */
4274 elf32_tic6x_copy_exidx_entry (output_bfd
,
4275 edited_contents
+ out_index
* 8,
4276 contents
+ in_index
* 8, add_to_offsets
);
4282 if (!(sec
->flags
& SEC_EXCLUDE
) && !(sec
->flags
& SEC_NEVER_LOAD
))
4283 bfd_set_section_contents (output_bfd
, sec
->output_section
,
4285 (file_ptr
) sec
->output_offset
, sec
->size
);
4290 #define TARGET_LITTLE_SYM tic6x_elf32_le_vec
4291 #define TARGET_LITTLE_NAME "elf32-tic6x-le"
4292 #define TARGET_BIG_SYM tic6x_elf32_be_vec
4293 #define TARGET_BIG_NAME "elf32-tic6x-be"
4294 #define ELF_ARCH bfd_arch_tic6x
4295 #define ELF_TARGET_ID TIC6X_ELF_DATA
4296 #define ELF_MACHINE_CODE EM_TI_C6000
4297 #define ELF_MAXPAGESIZE 0x1000
4298 #define bfd_elf32_bfd_reloc_type_lookup elf32_tic6x_reloc_type_lookup
4299 #define bfd_elf32_bfd_reloc_name_lookup elf32_tic6x_reloc_name_lookup
4300 #define bfd_elf32_bfd_merge_private_bfd_data elf32_tic6x_merge_private_bfd_data
4301 #define bfd_elf32_mkobject elf32_tic6x_mkobject
4302 #define bfd_elf32_bfd_link_hash_table_create elf32_tic6x_link_hash_table_create
4303 #define bfd_elf32_new_section_hook elf32_tic6x_new_section_hook
4304 #define elf_backend_stack_align 8
4305 #define elf_backend_can_gc_sections 1
4306 #define elf_backend_default_use_rela_p 1
4307 #define elf_backend_may_use_rel_p 1
4308 #define elf_backend_may_use_rela_p 1
4309 #define elf_backend_obj_attrs_arg_type elf32_tic6x_obj_attrs_arg_type
4310 #define elf_backend_obj_attrs_handle_unknown elf32_tic6x_obj_attrs_handle_unknown
4311 #define elf_backend_obj_attrs_order elf32_tic6x_obj_attrs_order
4312 #define elf_backend_obj_attrs_section ".c6xabi.attributes"
4313 #define elf_backend_obj_attrs_section_type SHT_C6000_ATTRIBUTES
4314 #define elf_backend_obj_attrs_vendor "c6xabi"
4315 #define elf_backend_can_refcount 1
4316 #define elf_backend_want_got_plt 1
4317 #define elf_backend_want_dynbss 1
4318 #define elf_backend_want_dynrelro 1
4319 #define elf_backend_plt_readonly 1
4320 #define elf_backend_rela_normal 1
4321 #define elf_backend_got_header_size 8
4322 #define elf_backend_fake_sections elf32_tic6x_fake_sections
4323 #define elf_backend_gc_mark_extra_sections elf32_tic6x_gc_mark_extra_sections
4324 #define elf_backend_create_dynamic_sections \
4325 elf32_tic6x_create_dynamic_sections
4326 #define elf_backend_adjust_dynamic_symbol \
4327 elf32_tic6x_adjust_dynamic_symbol
4328 #define elf_backend_check_relocs elf32_tic6x_check_relocs
4329 #define elf_backend_add_symbol_hook elf32_tic6x_add_symbol_hook
4330 #define elf_backend_symbol_processing elf32_tic6x_symbol_processing
4331 #define elf_backend_link_output_symbol_hook \
4332 elf32_tic6x_link_output_symbol_hook
4333 #define elf_backend_section_from_bfd_section \
4334 elf32_tic6x_section_from_bfd_section
4335 #define elf_backend_relocate_section elf32_tic6x_relocate_section
4336 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
4337 #define elf_backend_finish_dynamic_symbol \
4338 elf32_tic6x_finish_dynamic_symbol
4339 #define elf_backend_always_size_sections \
4340 elf32_tic6x_always_size_sections
4341 #define elf_backend_size_dynamic_sections \
4342 elf32_tic6x_size_dynamic_sections
4343 #define elf_backend_finish_dynamic_sections \
4344 elf32_tic6x_finish_dynamic_sections
4345 #define bfd_elf32_bfd_final_link \
4346 elf32_tic6x_final_link
4347 #define elf_backend_write_section elf32_tic6x_write_section
4348 #define elf_info_to_howto elf32_tic6x_info_to_howto
4349 #define elf_info_to_howto_rel elf32_tic6x_info_to_howto_rel
4351 #undef elf_backend_omit_section_dynsym
4352 #define elf_backend_omit_section_dynsym elf32_tic6x_link_omit_section_dynsym
4353 #define elf_backend_plt_sym_val elf32_tic6x_plt_sym_val
4355 #include "elf32-target.h"
4358 #define elf32_bed elf32_tic6x_linux_bed
4360 #undef TARGET_LITTLE_SYM
4361 #define TARGET_LITTLE_SYM tic6x_elf32_linux_le_vec
4362 #undef TARGET_LITTLE_NAME
4363 #define TARGET_LITTLE_NAME "elf32-tic6x-linux-le"
4364 #undef TARGET_BIG_SYM
4365 #define TARGET_BIG_SYM tic6x_elf32_linux_be_vec
4366 #undef TARGET_BIG_NAME
4367 #define TARGET_BIG_NAME "elf32-tic6x-linux-be"
4369 #define ELF_OSABI ELFOSABI_C6000_LINUX
4371 #include "elf32-target.h"
4374 #define elf32_bed elf32_tic6x_elf_bed
4376 #undef TARGET_LITTLE_SYM
4377 #define TARGET_LITTLE_SYM tic6x_elf32_c6000_le_vec
4378 #undef TARGET_LITTLE_NAME
4379 #define TARGET_LITTLE_NAME "elf32-tic6x-elf-le"
4380 #undef TARGET_BIG_SYM
4381 #define TARGET_BIG_SYM tic6x_elf32_c6000_be_vec
4382 #undef TARGET_BIG_NAME
4383 #define TARGET_BIG_NAME "elf32-tic6x-elf-be"
4385 #define ELF_OSABI ELFOSABI_C6000_ELFABI
4387 #include "elf32-target.h"