1 /* 32-bit ELF support for TI C6X
3 Free Software Foundation, Inc.
4 Contributed by Joseph Myers <joseph@codesourcery.com>
5 Bernd Schmidt <bernds@codesourcery.com>
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22 MA 02110-1301, USA. */
28 #include "libiberty.h"
30 #include "elf/tic6x.h"
31 #include "elf32-tic6x.h"
33 #define ELF_DYNAMIC_INTERPRETER "/lib/ld-uClibc.so.0"
35 /* DSBT binaries have a default 128K stack. */
36 #define DEFAULT_STACK_SIZE 0x20000
38 /* The size in bytes of an entry in the procedure linkage table. */
39 #define PLT_ENTRY_SIZE 24
41 /* TI C6X ELF linker hash table. */
43 struct elf32_tic6x_link_hash_table
45 struct elf_link_hash_table elf
;
47 /* Short-cuts to get to dynamic linker sections. */
51 /* C6X specific command line arguments. */
52 struct elf32_tic6x_params params
;
54 /* Small local sym cache. */
55 struct sym_cache sym_cache
;
57 /* The output BFD, for convenience. */
60 /* The .dsbt section. */
64 /* Get the TI C6X ELF linker hash table from a link_info structure. */
66 #define elf32_tic6x_hash_table(p) \
67 ((struct elf32_tic6x_link_hash_table *) ((p)->hash))
69 /* TI C6X ELF linker hash entry. */
71 struct elf32_tic6x_link_hash_entry
73 struct elf_link_hash_entry elf
;
75 /* Track dynamic relocs copied for this symbol. */
76 struct elf_dyn_relocs
*dyn_relocs
;
82 INSERT_EXIDX_CANTUNWIND_AT_END
84 tic6x_unwind_edit_type
;
86 /* A (sorted) list of edits to apply to an unwind table. */
87 typedef struct tic6x_unwind_table_edit
89 tic6x_unwind_edit_type type
;
90 /* Note: we sometimes want to insert an unwind entry corresponding to a
91 section different from the one we're currently writing out, so record the
92 (text) section this edit relates to here. */
93 asection
*linked_section
;
95 struct tic6x_unwind_table_edit
*next
;
97 tic6x_unwind_table_edit
;
99 typedef struct _tic6x_elf_section_data
101 /* Information about mapping symbols. */
102 struct bfd_elf_section_data elf
;
103 /* Information about unwind tables. */
106 /* Unwind info attached to a text section. */
109 asection
*tic6x_exidx_sec
;
112 /* Unwind info attached to an .c6xabi.exidx section. */
115 tic6x_unwind_table_edit
*unwind_edit_list
;
116 tic6x_unwind_table_edit
*unwind_edit_tail
;
120 _tic6x_elf_section_data
;
122 #define elf32_tic6x_section_data(sec) \
123 ((_tic6x_elf_section_data *) elf_section_data (sec))
125 struct elf32_tic6x_obj_tdata
127 struct elf_obj_tdata root
;
129 /* Whether to use RELA relocations when generating relocations.
130 This is a per-object flag to allow the assembler to generate REL
131 relocations for use in linker testcases. */
132 bfd_boolean use_rela_p
;
135 #define elf32_tic6x_tdata(abfd) \
136 ((struct elf32_tic6x_obj_tdata *) (abfd)->tdata.any)
138 #define is_tic6x_elf(bfd) \
139 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
140 && elf_tdata (bfd) != NULL \
141 && elf_object_id (bfd) == TIC6X_ELF_DATA)
143 /* C6X ELF uses two common sections. One is the usual one, and the
144 other is for small objects. All the small objects are kept
145 together, and then referenced via the gp pointer, which yields
146 faster assembler code. This is what we use for the small common
147 section. This approach is copied from ecoff.c. */
148 static asection tic6x_elf_scom_section
;
149 static asymbol tic6x_elf_scom_symbol
;
150 static asymbol
*tic6x_elf_scom_symbol_ptr
;
152 static reloc_howto_type elf32_tic6x_howto_table
[] =
154 HOWTO (R_C6000_NONE
, /* type */
156 0, /* size (0 = byte, 1 = short, 2 = long) */
158 FALSE
, /* pc_relative */
160 complain_overflow_dont
,/* complain_on_overflow */
161 bfd_elf_generic_reloc
, /* special_function */
162 "R_C6000_NONE", /* name */
163 FALSE
, /* partial_inplace */
166 FALSE
), /* pcrel_offset */
167 HOWTO (R_C6000_ABS32
, /* type */
169 2, /* size (0 = byte, 1 = short, 2 = long) */
171 FALSE
, /* pc_relative */
173 complain_overflow_dont
,/* complain_on_overflow */
174 bfd_elf_generic_reloc
, /* special_function */
175 "R_C6000_ABS32", /* name */
176 FALSE
, /* partial_inplace */
178 0xffffffff, /* dst_mask */
179 FALSE
), /* pcrel_offset */
180 HOWTO (R_C6000_ABS16
, /* type */
182 1, /* size (0 = byte, 1 = short, 2 = long) */
184 FALSE
, /* pc_relative */
186 complain_overflow_bitfield
,/* complain_on_overflow */
187 bfd_elf_generic_reloc
, /* special_function */
188 "R_C6000_ABS16", /* name */
189 FALSE
, /* partial_inplace */
191 0x0000ffff, /* dst_mask */
192 FALSE
), /* pcrel_offset */
193 HOWTO (R_C6000_ABS8
, /* type */
195 0, /* size (0 = byte, 1 = short, 2 = long) */
197 FALSE
, /* pc_relative */
199 complain_overflow_bitfield
,/* complain_on_overflow */
200 bfd_elf_generic_reloc
, /* special_function */
201 "R_C6000_ABS8", /* name */
202 FALSE
, /* partial_inplace */
204 0x000000ff, /* dst_mask */
205 FALSE
), /* pcrel_offset */
206 HOWTO (R_C6000_PCR_S21
, /* type */
208 2, /* size (0 = byte, 1 = short, 2 = long) */
210 TRUE
, /* pc_relative */
212 complain_overflow_signed
,/* complain_on_overflow */
213 bfd_elf_generic_reloc
, /* special_function */
214 "R_C6000_PCR_S21", /* name */
215 FALSE
, /* partial_inplace */
217 0x0fffff80, /* dst_mask */
218 TRUE
), /* pcrel_offset */
219 HOWTO (R_C6000_PCR_S12
, /* type */
221 2, /* size (0 = byte, 1 = short, 2 = long) */
223 TRUE
, /* pc_relative */
225 complain_overflow_signed
,/* complain_on_overflow */
226 bfd_elf_generic_reloc
, /* special_function */
227 "R_C6000_PCR_S12", /* name */
228 FALSE
, /* partial_inplace */
230 0x0fff0000, /* dst_mask */
231 TRUE
), /* pcrel_offset */
232 HOWTO (R_C6000_PCR_S10
, /* type */
234 2, /* size (0 = byte, 1 = short, 2 = long) */
236 TRUE
, /* pc_relative */
238 complain_overflow_signed
,/* complain_on_overflow */
239 bfd_elf_generic_reloc
, /* special_function */
240 "R_C6000_PCR_S10", /* name */
241 FALSE
, /* partial_inplace */
243 0x007fe000, /* dst_mask */
244 TRUE
), /* pcrel_offset */
245 HOWTO (R_C6000_PCR_S7
, /* type */
247 2, /* size (0 = byte, 1 = short, 2 = long) */
249 TRUE
, /* pc_relative */
251 complain_overflow_signed
,/* complain_on_overflow */
252 bfd_elf_generic_reloc
, /* special_function */
253 "R_C6000_PCR_S7", /* name */
254 FALSE
, /* partial_inplace */
256 0x007f0000, /* dst_mask */
257 TRUE
), /* pcrel_offset */
258 HOWTO (R_C6000_ABS_S16
, /* type */
260 2, /* size (0 = byte, 1 = short, 2 = long) */
262 FALSE
, /* pc_relative */
264 complain_overflow_signed
,/* complain_on_overflow */
265 bfd_elf_generic_reloc
, /* special_function */
266 "R_C6000_ABS_S16", /* name */
267 FALSE
, /* partial_inplace */
269 0x007fff80, /* dst_mask */
270 FALSE
), /* pcrel_offset */
271 HOWTO (R_C6000_ABS_L16
, /* type */
273 2, /* size (0 = byte, 1 = short, 2 = long) */
275 FALSE
, /* pc_relative */
277 complain_overflow_dont
,/* complain_on_overflow */
278 bfd_elf_generic_reloc
, /* special_function */
279 "R_C6000_ABS_L16", /* name */
280 FALSE
, /* partial_inplace */
282 0x007fff80, /* dst_mask */
283 FALSE
), /* pcrel_offset */
284 HOWTO (R_C6000_ABS_H16
, /* type */
286 2, /* size (0 = byte, 1 = short, 2 = long) */
288 FALSE
, /* pc_relative */
290 complain_overflow_dont
,/* complain_on_overflow */
291 bfd_elf_generic_reloc
, /* special_function */
292 "R_C6000_ABS_H16", /* name */
293 FALSE
, /* partial_inplace */
295 0x007fff80, /* dst_mask */
296 FALSE
), /* pcrel_offset */
297 HOWTO (R_C6000_SBR_U15_B
, /* type */
299 2, /* size (0 = byte, 1 = short, 2 = long) */
301 FALSE
, /* pc_relative */
303 complain_overflow_unsigned
,/* complain_on_overflow */
304 bfd_elf_generic_reloc
, /* special_function */
305 "R_C6000_SBR_U15_B", /* name */
306 FALSE
, /* partial_inplace */
308 0x007fff00, /* dst_mask */
309 FALSE
), /* pcrel_offset */
310 HOWTO (R_C6000_SBR_U15_H
, /* type */
312 2, /* size (0 = byte, 1 = short, 2 = long) */
314 FALSE
, /* pc_relative */
316 complain_overflow_unsigned
,/* complain_on_overflow */
317 bfd_elf_generic_reloc
, /* special_function */
318 "R_C6000_SBR_U15_H", /* name */
319 FALSE
, /* partial_inplace */
321 0x007fff00, /* dst_mask */
322 FALSE
), /* pcrel_offset */
323 HOWTO (R_C6000_SBR_U15_W
, /* type */
325 2, /* size (0 = byte, 1 = short, 2 = long) */
327 FALSE
, /* pc_relative */
329 complain_overflow_unsigned
,/* complain_on_overflow */
330 bfd_elf_generic_reloc
, /* special_function */
331 "R_C6000_SBR_U15_W", /* name */
332 FALSE
, /* partial_inplace */
334 0x007fff00, /* dst_mask */
335 FALSE
), /* pcrel_offset */
336 HOWTO (R_C6000_SBR_S16
, /* type */
338 2, /* size (0 = byte, 1 = short, 2 = long) */
340 FALSE
, /* pc_relative */
342 complain_overflow_signed
,/* complain_on_overflow */
343 bfd_elf_generic_reloc
, /* special_function */
344 "R_C6000_SBR_S16", /* name */
345 FALSE
, /* partial_inplace */
347 0x007fff80, /* dst_mask */
348 FALSE
), /* pcrel_offset */
349 HOWTO (R_C6000_SBR_L16_B
, /* type */
351 2, /* size (0 = byte, 1 = short, 2 = long) */
353 FALSE
, /* pc_relative */
355 complain_overflow_dont
,/* complain_on_overflow */
356 bfd_elf_generic_reloc
, /* special_function */
357 "R_C6000_SBR_L16_B", /* name */
358 FALSE
, /* partial_inplace */
360 0x007fff80, /* dst_mask */
361 FALSE
), /* pcrel_offset */
362 HOWTO (R_C6000_SBR_L16_H
, /* type */
364 2, /* size (0 = byte, 1 = short, 2 = long) */
366 FALSE
, /* pc_relative */
368 complain_overflow_dont
,/* complain_on_overflow */
369 bfd_elf_generic_reloc
, /* special_function */
370 "R_C6000_SBR_L16_H", /* name */
371 FALSE
, /* partial_inplace */
373 0x007fff80, /* dst_mask */
374 FALSE
), /* pcrel_offset */
375 HOWTO (R_C6000_SBR_L16_W
, /* type */
377 2, /* size (0 = byte, 1 = short, 2 = long) */
379 FALSE
, /* pc_relative */
381 complain_overflow_dont
,/* complain_on_overflow */
382 bfd_elf_generic_reloc
, /* special_function */
383 "R_C6000_SBR_L16_W", /* name */
384 FALSE
, /* partial_inplace */
386 0x007fff80, /* dst_mask */
387 FALSE
), /* pcrel_offset */
388 HOWTO (R_C6000_SBR_H16_B
, /* type */
390 2, /* size (0 = byte, 1 = short, 2 = long) */
392 FALSE
, /* pc_relative */
394 complain_overflow_dont
,/* complain_on_overflow */
395 bfd_elf_generic_reloc
, /* special_function */
396 "R_C6000_SBR_H16_B", /* name */
397 FALSE
, /* partial_inplace */
399 0x007fff80, /* dst_mask */
400 FALSE
), /* pcrel_offset */
401 HOWTO (R_C6000_SBR_H16_H
, /* type */
403 2, /* size (0 = byte, 1 = short, 2 = long) */
405 FALSE
, /* pc_relative */
407 complain_overflow_dont
,/* complain_on_overflow */
408 bfd_elf_generic_reloc
, /* special_function */
409 "R_C6000_SBR_H16_H", /* name */
410 FALSE
, /* partial_inplace */
412 0x007fff80, /* dst_mask */
413 FALSE
), /* pcrel_offset */
414 HOWTO (R_C6000_SBR_H16_W
, /* type */
416 2, /* size (0 = byte, 1 = short, 2 = long) */
418 FALSE
, /* pc_relative */
420 complain_overflow_dont
,/* complain_on_overflow */
421 bfd_elf_generic_reloc
, /* special_function */
422 "R_C6000_SBR_H16_W", /* name */
423 FALSE
, /* partial_inplace */
425 0x007fff80, /* dst_mask */
426 FALSE
), /* pcrel_offset */
427 HOWTO (R_C6000_SBR_GOT_U15_W
, /* type */
429 2, /* size (0 = byte, 1 = short, 2 = long) */
431 FALSE
, /* pc_relative */
433 complain_overflow_unsigned
,/* complain_on_overflow */
434 bfd_elf_generic_reloc
, /* special_function */
435 "R_C6000_SBR_GOT_U15_W",/* name */
436 FALSE
, /* partial_inplace */
438 0x007fff00, /* dst_mask */
439 FALSE
), /* pcrel_offset */
440 HOWTO (R_C6000_SBR_GOT_L16_W
, /* type */
442 2, /* size (0 = byte, 1 = short, 2 = long) */
444 FALSE
, /* pc_relative */
446 complain_overflow_dont
,/* complain_on_overflow */
447 bfd_elf_generic_reloc
, /* special_function */
448 "R_C6000_SBR_GOT_L16_W",/* name */
449 FALSE
, /* partial_inplace */
451 0x007fff80, /* dst_mask */
452 FALSE
), /* pcrel_offset */
453 HOWTO (R_C6000_SBR_GOT_H16_W
, /* type */
455 2, /* size (0 = byte, 1 = short, 2 = long) */
457 FALSE
, /* pc_relative */
459 complain_overflow_dont
,/* complain_on_overflow */
460 bfd_elf_generic_reloc
, /* special_function */
461 "R_C6000_SBR_GOT_H16_W",/* name */
462 FALSE
, /* partial_inplace */
464 0x007fff80, /* dst_mask */
465 FALSE
), /* pcrel_offset */
466 HOWTO (R_C6000_DSBT_INDEX
, /* type */
468 2, /* size (0 = byte, 1 = short, 2 = long) */
470 FALSE
, /* pc_relative */
472 complain_overflow_unsigned
,/* complain_on_overflow */
473 bfd_elf_generic_reloc
, /* special_function */
474 "R_C6000_DSBT_INDEX", /* name */
475 FALSE
, /* partial_inplace */
477 0x007fff00, /* dst_mask */
478 FALSE
), /* pcrel_offset */
479 HOWTO (R_C6000_PREL31
, /* type */
481 2, /* size (0 = byte, 1 = short, 2 = long) */
483 TRUE
, /* pc_relative */
485 complain_overflow_dont
,/* complain_on_overflow */
486 bfd_elf_generic_reloc
, /* special_function */
487 "R_C6000_PREL31", /* name */
488 FALSE
, /* partial_inplace */
490 0x7fffffff, /* dst_mask */
491 TRUE
), /* pcrel_offset */
492 HOWTO (R_C6000_COPY
, /* type */
494 2, /* size (0 = byte, 1 = short, 2 = long) */
496 FALSE
, /* pc_relative */
498 complain_overflow_dont
,/* complain_on_overflow */
499 bfd_elf_generic_reloc
, /* special_function */
500 "R_C6000_COPY", /* name */
501 FALSE
, /* partial_inplace */
503 0xffffffff, /* dst_mask */
504 FALSE
), /* pcrel_offset */
505 HOWTO (R_C6000_JUMP_SLOT
, /* type */
507 2, /* size (0 = byte, 1 = short, 2 = long) */
509 FALSE
, /* pc_relative */
511 complain_overflow_dont
,/* complain_on_overflow */
512 bfd_elf_generic_reloc
, /* special_function */
513 "R_C6000_JUMP_SLOT", /* name */
514 FALSE
, /* partial_inplace */
516 0xffffffff, /* dst_mask */
517 FALSE
), /* pcrel_offset */
518 HOWTO (R_C6000_EHTYPE
, /* type */
520 2, /* size (0 = byte, 1 = short, 2 = long) */
522 FALSE
, /* pc_relative */
524 complain_overflow_dont
,/* complain_on_overflow */
525 bfd_elf_generic_reloc
, /* special_function */
526 "R_C6000_EHTYPE", /* name */
527 FALSE
, /* partial_inplace */
529 0xffffffff, /* dst_mask */
530 FALSE
), /* pcrel_offset */
531 HOWTO (R_C6000_PCR_H16
, /* type */
533 2, /* size (0 = byte, 1 = short, 2 = long) */
535 TRUE
, /* pc_relative */
537 complain_overflow_dont
,/* complain_on_overflow */
538 bfd_elf_generic_reloc
, /* special_function */
539 "R_C6000_PCR_H16", /* name */
540 FALSE
, /* partial_inplace */
542 0x007fff80, /* dst_mask */
543 TRUE
), /* pcrel_offset */
544 HOWTO (R_C6000_PCR_L16
, /* type */
546 2, /* size (0 = byte, 1 = short, 2 = long) */
548 TRUE
, /* pc_relative */
550 complain_overflow_dont
,/* complain_on_overflow */
551 bfd_elf_generic_reloc
, /* special_function */
552 "R_C6000_PCR_L16", /* name */
553 FALSE
, /* partial_inplace */
555 0x007fff80, /* dst_mask */
556 TRUE
), /* pcrel_offset */
779 HOWTO (R_C6000_ALIGN
, /* type */
781 0, /* size (0 = byte, 1 = short, 2 = long) */
783 FALSE
, /* pc_relative */
785 complain_overflow_dont
,/* complain_on_overflow */
786 bfd_elf_generic_reloc
, /* special_function */
787 "R_C6000_ALIGN", /* name */
788 FALSE
, /* partial_inplace */
791 FALSE
), /* pcrel_offset */
792 HOWTO (R_C6000_FPHEAD
, /* type */
794 0, /* size (0 = byte, 1 = short, 2 = long) */
796 FALSE
, /* pc_relative */
798 complain_overflow_dont
,/* complain_on_overflow */
799 bfd_elf_generic_reloc
, /* special_function */
800 "R_C6000_FPHEAD", /* name */
801 FALSE
, /* partial_inplace */
804 FALSE
), /* pcrel_offset */
805 HOWTO (R_C6000_NOCMP
, /* type */
807 0, /* size (0 = byte, 1 = short, 2 = long) */
809 FALSE
, /* pc_relative */
811 complain_overflow_dont
,/* complain_on_overflow */
812 bfd_elf_generic_reloc
, /* special_function */
813 "R_C6000_NOCMP", /* name */
814 FALSE
, /* partial_inplace */
817 FALSE
) /* pcrel_offset */
820 static reloc_howto_type elf32_tic6x_howto_table_rel
[] =
822 HOWTO (R_C6000_NONE
, /* type */
824 0, /* size (0 = byte, 1 = short, 2 = long) */
826 FALSE
, /* pc_relative */
828 complain_overflow_dont
,/* complain_on_overflow */
829 bfd_elf_generic_reloc
, /* special_function */
830 "R_C6000_NONE", /* name */
831 TRUE
, /* partial_inplace */
834 FALSE
), /* pcrel_offset */
835 HOWTO (R_C6000_ABS32
, /* type */
837 2, /* size (0 = byte, 1 = short, 2 = long) */
839 FALSE
, /* pc_relative */
841 complain_overflow_dont
,/* complain_on_overflow */
842 bfd_elf_generic_reloc
, /* special_function */
843 "R_C6000_ABS32", /* name */
844 TRUE
, /* partial_inplace */
845 0xffffffff, /* src_mask */
846 0xffffffff, /* dst_mask */
847 FALSE
), /* pcrel_offset */
848 HOWTO (R_C6000_ABS16
, /* type */
850 1, /* size (0 = byte, 1 = short, 2 = long) */
852 FALSE
, /* pc_relative */
854 complain_overflow_bitfield
,/* complain_on_overflow */
855 bfd_elf_generic_reloc
, /* special_function */
856 "R_C6000_ABS16", /* name */
857 TRUE
, /* partial_inplace */
858 0x0000ffff, /* src_mask */
859 0x0000ffff, /* dst_mask */
860 FALSE
), /* pcrel_offset */
861 HOWTO (R_C6000_ABS8
, /* type */
863 0, /* size (0 = byte, 1 = short, 2 = long) */
865 FALSE
, /* pc_relative */
867 complain_overflow_bitfield
,/* complain_on_overflow */
868 bfd_elf_generic_reloc
, /* special_function */
869 "R_C6000_ABS8", /* name */
870 TRUE
, /* partial_inplace */
871 0x000000ff, /* src_mask */
872 0x000000ff, /* dst_mask */
873 FALSE
), /* pcrel_offset */
874 HOWTO (R_C6000_PCR_S21
, /* type */
876 2, /* size (0 = byte, 1 = short, 2 = long) */
878 TRUE
, /* pc_relative */
880 complain_overflow_signed
,/* complain_on_overflow */
881 bfd_elf_generic_reloc
, /* special_function */
882 "R_C6000_PCR_S21", /* name */
883 TRUE
, /* partial_inplace */
884 0x0fffff80, /* src_mask */
885 0x0fffff80, /* dst_mask */
886 TRUE
), /* pcrel_offset */
887 HOWTO (R_C6000_PCR_S12
, /* type */
889 2, /* size (0 = byte, 1 = short, 2 = long) */
891 TRUE
, /* pc_relative */
893 complain_overflow_signed
,/* complain_on_overflow */
894 bfd_elf_generic_reloc
, /* special_function */
895 "R_C6000_PCR_S12", /* name */
896 TRUE
, /* partial_inplace */
897 0x0fff0000, /* src_mask */
898 0x0fff0000, /* dst_mask */
899 TRUE
), /* pcrel_offset */
900 HOWTO (R_C6000_PCR_S10
, /* type */
902 2, /* size (0 = byte, 1 = short, 2 = long) */
904 TRUE
, /* pc_relative */
906 complain_overflow_signed
,/* complain_on_overflow */
907 bfd_elf_generic_reloc
, /* special_function */
908 "R_C6000_PCR_S10", /* name */
909 TRUE
, /* partial_inplace */
910 0x007fe000, /* src_mask */
911 0x007fe000, /* dst_mask */
912 TRUE
), /* pcrel_offset */
913 HOWTO (R_C6000_PCR_S7
, /* type */
915 2, /* size (0 = byte, 1 = short, 2 = long) */
917 TRUE
, /* pc_relative */
919 complain_overflow_signed
,/* complain_on_overflow */
920 bfd_elf_generic_reloc
, /* special_function */
921 "R_C6000_PCR_S7", /* name */
922 TRUE
, /* partial_inplace */
923 0x007f0000, /* src_mask */
924 0x007f0000, /* dst_mask */
925 TRUE
), /* pcrel_offset */
926 HOWTO (R_C6000_ABS_S16
, /* type */
928 2, /* size (0 = byte, 1 = short, 2 = long) */
930 FALSE
, /* pc_relative */
932 complain_overflow_signed
,/* complain_on_overflow */
933 bfd_elf_generic_reloc
, /* special_function */
934 "R_C6000_ABS_S16", /* name */
935 TRUE
, /* partial_inplace */
936 0x007fff80, /* src_mask */
937 0x007fff80, /* dst_mask */
938 FALSE
), /* pcrel_offset */
939 HOWTO (R_C6000_ABS_L16
, /* type */
941 2, /* size (0 = byte, 1 = short, 2 = long) */
943 FALSE
, /* pc_relative */
945 complain_overflow_dont
,/* complain_on_overflow */
946 bfd_elf_generic_reloc
, /* special_function */
947 "R_C6000_ABS_L16", /* name */
948 TRUE
, /* partial_inplace */
949 0x007fff80, /* src_mask */
950 0x007fff80, /* dst_mask */
951 FALSE
), /* pcrel_offset */
952 EMPTY_HOWTO (R_C6000_ABS_H16
),
953 HOWTO (R_C6000_SBR_U15_B
, /* type */
955 2, /* size (0 = byte, 1 = short, 2 = long) */
957 FALSE
, /* pc_relative */
959 complain_overflow_unsigned
,/* complain_on_overflow */
960 bfd_elf_generic_reloc
, /* special_function */
961 "R_C6000_SBR_U15_B", /* name */
962 TRUE
, /* partial_inplace */
963 0x007fff00, /* src_mask */
964 0x007fff00, /* dst_mask */
965 FALSE
), /* pcrel_offset */
966 HOWTO (R_C6000_SBR_U15_H
, /* type */
968 2, /* size (0 = byte, 1 = short, 2 = long) */
970 FALSE
, /* pc_relative */
972 complain_overflow_unsigned
,/* complain_on_overflow */
973 bfd_elf_generic_reloc
, /* special_function */
974 "R_C6000_SBR_U15_H", /* name */
975 TRUE
, /* partial_inplace */
976 0x007fff00, /* src_mask */
977 0x007fff00, /* dst_mask */
978 FALSE
), /* pcrel_offset */
979 HOWTO (R_C6000_SBR_U15_W
, /* type */
981 2, /* size (0 = byte, 1 = short, 2 = long) */
983 FALSE
, /* pc_relative */
985 complain_overflow_unsigned
,/* complain_on_overflow */
986 bfd_elf_generic_reloc
, /* special_function */
987 "R_C6000_SBR_U15_W", /* name */
988 TRUE
, /* partial_inplace */
989 0x007fff00, /* src_mask */
990 0x007fff00, /* dst_mask */
991 FALSE
), /* pcrel_offset */
992 HOWTO (R_C6000_SBR_S16
, /* type */
994 2, /* size (0 = byte, 1 = short, 2 = long) */
996 FALSE
, /* pc_relative */
998 complain_overflow_signed
,/* complain_on_overflow */
999 bfd_elf_generic_reloc
, /* special_function */
1000 "R_C6000_SBR_S16", /* name */
1001 TRUE
, /* partial_inplace */
1002 0x007fff80, /* src_mask */
1003 0x007fff80, /* dst_mask */
1004 FALSE
), /* pcrel_offset */
1005 HOWTO (R_C6000_SBR_L16_B
, /* type */
1007 2, /* size (0 = byte, 1 = short, 2 = long) */
1009 FALSE
, /* pc_relative */
1011 complain_overflow_dont
,/* complain_on_overflow */
1012 bfd_elf_generic_reloc
, /* special_function */
1013 "R_C6000_SBR_L16_B", /* name */
1014 TRUE
, /* partial_inplace */
1015 0x007fff80, /* src_mask */
1016 0x007fff80, /* dst_mask */
1017 FALSE
), /* pcrel_offset */
1018 HOWTO (R_C6000_SBR_L16_H
, /* type */
1020 2, /* size (0 = byte, 1 = short, 2 = long) */
1022 FALSE
, /* pc_relative */
1024 complain_overflow_dont
,/* complain_on_overflow */
1025 bfd_elf_generic_reloc
, /* special_function */
1026 "R_C6000_SBR_L16_H", /* name */
1027 TRUE
, /* partial_inplace */
1028 0x007fff80, /* src_mask */
1029 0x007fff80, /* dst_mask */
1030 FALSE
), /* pcrel_offset */
1031 HOWTO (R_C6000_SBR_L16_W
, /* type */
1033 2, /* size (0 = byte, 1 = short, 2 = long) */
1035 FALSE
, /* pc_relative */
1037 complain_overflow_dont
,/* complain_on_overflow */
1038 bfd_elf_generic_reloc
, /* special_function */
1039 "R_C6000_SBR_L16_W", /* name */
1040 TRUE
, /* partial_inplace */
1041 0x007fff80, /* src_mask */
1042 0x007fff80, /* dst_mask */
1043 FALSE
), /* pcrel_offset */
1044 EMPTY_HOWTO (R_C6000_SBR_H16_B
),
1045 EMPTY_HOWTO (R_C6000_SBR_H16_H
),
1046 EMPTY_HOWTO (R_C6000_SBR_H16_W
),
1047 HOWTO (R_C6000_SBR_GOT_U15_W
, /* type */
1049 2, /* size (0 = byte, 1 = short, 2 = long) */
1051 FALSE
, /* pc_relative */
1053 complain_overflow_unsigned
,/* complain_on_overflow */
1054 bfd_elf_generic_reloc
, /* special_function */
1055 "R_C6000_SBR_GOT_U15_W",/* name */
1056 TRUE
, /* partial_inplace */
1057 0x007fff00, /* src_mask */
1058 0x007fff00, /* dst_mask */
1059 FALSE
), /* pcrel_offset */
1060 HOWTO (R_C6000_SBR_GOT_L16_W
, /* type */
1062 2, /* size (0 = byte, 1 = short, 2 = long) */
1064 FALSE
, /* pc_relative */
1066 complain_overflow_dont
,/* complain_on_overflow */
1067 bfd_elf_generic_reloc
, /* special_function */
1068 "R_C6000_SBR_GOT_L16_W",/* name */
1069 TRUE
, /* partial_inplace */
1070 0x007fff80, /* src_mask */
1071 0x007fff80, /* dst_mask */
1072 FALSE
), /* pcrel_offset */
1073 EMPTY_HOWTO (R_C6000_SBR_GOT_H16_W
),
1074 HOWTO (R_C6000_DSBT_INDEX
, /* type */
1076 2, /* size (0 = byte, 1 = short, 2 = long) */
1078 FALSE
, /* pc_relative */
1080 complain_overflow_unsigned
,/* complain_on_overflow */
1081 bfd_elf_generic_reloc
, /* special_function */
1082 "R_C6000_DSBT_INDEX", /* name */
1083 TRUE
, /* partial_inplace */
1085 0x007fff00, /* dst_mask */
1086 FALSE
), /* pcrel_offset */
1087 HOWTO (R_C6000_PREL31
, /* type */
1089 2, /* size (0 = byte, 1 = short, 2 = long) */
1091 TRUE
, /* pc_relative */
1093 complain_overflow_dont
,/* complain_on_overflow */
1094 bfd_elf_generic_reloc
, /* special_function */
1095 "R_C6000_PREL31", /* name */
1096 TRUE
, /* partial_inplace */
1098 0x7fffffff, /* dst_mask */
1099 TRUE
), /* pcrel_offset */
1100 HOWTO (R_C6000_COPY
, /* type */
1102 2, /* size (0 = byte, 1 = short, 2 = long) */
1104 FALSE
, /* pc_relative */
1106 complain_overflow_dont
,/* complain_on_overflow */
1107 bfd_elf_generic_reloc
, /* special_function */
1108 "R_C6000_COPY", /* name */
1109 TRUE
, /* partial_inplace */
1111 0xffffffff, /* dst_mask */
1112 FALSE
), /* pcrel_offset */
1113 HOWTO (R_C6000_JUMP_SLOT
, /* type */
1115 2, /* size (0 = byte, 1 = short, 2 = long) */
1117 FALSE
, /* pc_relative */
1119 complain_overflow_dont
,/* complain_on_overflow */
1120 bfd_elf_generic_reloc
, /* special_function */
1121 "R_C6000_JUMP_SLOT", /* name */
1122 FALSE
, /* partial_inplace */
1124 0xffffffff, /* dst_mask */
1125 FALSE
), /* pcrel_offset */
1126 HOWTO (R_C6000_EHTYPE
, /* type */
1128 2, /* size (0 = byte, 1 = short, 2 = long) */
1130 FALSE
, /* pc_relative */
1132 complain_overflow_dont
,/* complain_on_overflow */
1133 bfd_elf_generic_reloc
, /* special_function */
1134 "R_C6000_EHTYPE", /* name */
1135 FALSE
, /* partial_inplace */
1137 0xffffffff, /* dst_mask */
1138 FALSE
), /* pcrel_offset */
1139 EMPTY_HOWTO (R_C6000_PCR_H16
),
1140 EMPTY_HOWTO (R_C6000_PCR_L16
),
1363 HOWTO (R_C6000_ALIGN
, /* type */
1365 0, /* size (0 = byte, 1 = short, 2 = long) */
1367 FALSE
, /* pc_relative */
1369 complain_overflow_dont
,/* complain_on_overflow */
1370 bfd_elf_generic_reloc
, /* special_function */
1371 "R_C6000_ALIGN", /* name */
1372 TRUE
, /* partial_inplace */
1375 FALSE
), /* pcrel_offset */
1376 HOWTO (R_C6000_FPHEAD
, /* type */
1378 0, /* size (0 = byte, 1 = short, 2 = long) */
1380 FALSE
, /* pc_relative */
1382 complain_overflow_dont
,/* complain_on_overflow */
1383 bfd_elf_generic_reloc
, /* special_function */
1384 "R_C6000_FPHEAD", /* name */
1385 TRUE
, /* partial_inplace */
1388 FALSE
), /* pcrel_offset */
1389 HOWTO (R_C6000_NOCMP
, /* type */
1391 0, /* size (0 = byte, 1 = short, 2 = long) */
1393 FALSE
, /* pc_relative */
1395 complain_overflow_dont
,/* complain_on_overflow */
1396 bfd_elf_generic_reloc
, /* special_function */
1397 "R_C6000_NOCMP", /* name */
1398 TRUE
, /* partial_inplace */
1401 FALSE
) /* pcrel_offset */
1404 /* Map BFD relocations to ELF relocations. */
1408 bfd_reloc_code_real_type bfd_reloc_val
;
1409 enum elf_tic6x_reloc_type elf_reloc_val
;
1412 static const tic6x_reloc_map elf32_tic6x_reloc_map
[] =
1414 { BFD_RELOC_NONE
, R_C6000_NONE
},
1415 { BFD_RELOC_32
, R_C6000_ABS32
},
1416 { BFD_RELOC_16
, R_C6000_ABS16
},
1417 { BFD_RELOC_8
, R_C6000_ABS8
},
1418 { BFD_RELOC_C6000_PCR_S21
, R_C6000_PCR_S21
},
1419 { BFD_RELOC_C6000_PCR_S12
, R_C6000_PCR_S12
},
1420 { BFD_RELOC_C6000_PCR_S10
, R_C6000_PCR_S10
},
1421 { BFD_RELOC_C6000_PCR_S7
, R_C6000_PCR_S7
},
1422 { BFD_RELOC_C6000_ABS_S16
, R_C6000_ABS_S16
},
1423 { BFD_RELOC_C6000_ABS_L16
, R_C6000_ABS_L16
},
1424 { BFD_RELOC_C6000_ABS_H16
, R_C6000_ABS_H16
},
1425 { BFD_RELOC_C6000_SBR_U15_B
, R_C6000_SBR_U15_B
},
1426 { BFD_RELOC_C6000_SBR_U15_H
, R_C6000_SBR_U15_H
},
1427 { BFD_RELOC_C6000_SBR_U15_W
, R_C6000_SBR_U15_W
},
1428 { BFD_RELOC_C6000_SBR_S16
, R_C6000_SBR_S16
},
1429 { BFD_RELOC_C6000_SBR_L16_B
, R_C6000_SBR_L16_B
},
1430 { BFD_RELOC_C6000_SBR_L16_H
, R_C6000_SBR_L16_H
},
1431 { BFD_RELOC_C6000_SBR_L16_W
, R_C6000_SBR_L16_W
},
1432 { BFD_RELOC_C6000_SBR_H16_B
, R_C6000_SBR_H16_B
},
1433 { BFD_RELOC_C6000_SBR_H16_H
, R_C6000_SBR_H16_H
},
1434 { BFD_RELOC_C6000_SBR_H16_W
, R_C6000_SBR_H16_W
},
1435 { BFD_RELOC_C6000_SBR_GOT_U15_W
, R_C6000_SBR_GOT_U15_W
},
1436 { BFD_RELOC_C6000_SBR_GOT_L16_W
, R_C6000_SBR_GOT_L16_W
},
1437 { BFD_RELOC_C6000_SBR_GOT_H16_W
, R_C6000_SBR_GOT_H16_W
},
1438 { BFD_RELOC_C6000_DSBT_INDEX
, R_C6000_DSBT_INDEX
},
1439 { BFD_RELOC_C6000_PREL31
, R_C6000_PREL31
},
1440 { BFD_RELOC_C6000_COPY
, R_C6000_COPY
},
1441 { BFD_RELOC_C6000_JUMP_SLOT
, R_C6000_JUMP_SLOT
},
1442 { BFD_RELOC_C6000_EHTYPE
, R_C6000_EHTYPE
},
1443 { BFD_RELOC_C6000_PCR_H16
, R_C6000_PCR_H16
},
1444 { BFD_RELOC_C6000_PCR_L16
, R_C6000_PCR_L16
},
1445 { BFD_RELOC_C6000_ALIGN
, R_C6000_ALIGN
},
1446 { BFD_RELOC_C6000_FPHEAD
, R_C6000_FPHEAD
},
1447 { BFD_RELOC_C6000_NOCMP
, R_C6000_NOCMP
}
1450 static reloc_howto_type
*
1451 elf32_tic6x_reloc_type_lookup (bfd
*abfd
, bfd_reloc_code_real_type code
)
1455 for (i
= 0; i
< ARRAY_SIZE (elf32_tic6x_reloc_map
); i
++)
1456 if (elf32_tic6x_reloc_map
[i
].bfd_reloc_val
== code
)
1458 enum elf_tic6x_reloc_type elf_reloc_val
;
1459 reloc_howto_type
*howto
;
1461 elf_reloc_val
= elf32_tic6x_reloc_map
[i
].elf_reloc_val
;
1462 if (elf32_tic6x_tdata (abfd
)->use_rela_p
)
1463 howto
= &elf32_tic6x_howto_table
[elf_reloc_val
];
1465 howto
= &elf32_tic6x_howto_table_rel
[elf_reloc_val
];
1467 /* Some relocations are RELA-only; do not return them for
1469 if (howto
->name
== NULL
)
1478 static reloc_howto_type
*
1479 elf32_tic6x_reloc_name_lookup (bfd
*abfd
, const char *r_name
)
1481 if (elf32_tic6x_tdata (abfd
)->use_rela_p
)
1485 for (i
= 0; i
< ARRAY_SIZE (elf32_tic6x_howto_table
); i
++)
1486 if (elf32_tic6x_howto_table
[i
].name
!= NULL
1487 && strcasecmp (elf32_tic6x_howto_table
[i
].name
, r_name
) == 0)
1488 return &elf32_tic6x_howto_table
[i
];
1494 for (i
= 0; i
< ARRAY_SIZE (elf32_tic6x_howto_table_rel
); i
++)
1495 if (elf32_tic6x_howto_table_rel
[i
].name
!= NULL
1496 && strcasecmp (elf32_tic6x_howto_table_rel
[i
].name
, r_name
) == 0)
1497 return &elf32_tic6x_howto_table_rel
[i
];
1504 elf32_tic6x_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*bfd_reloc
,
1505 Elf_Internal_Rela
*elf_reloc
)
1507 unsigned int r_type
;
1509 r_type
= ELF32_R_TYPE (elf_reloc
->r_info
);
1510 if (r_type
>= ARRAY_SIZE (elf32_tic6x_howto_table
))
1511 bfd_reloc
->howto
= NULL
;
1513 bfd_reloc
->howto
= &elf32_tic6x_howto_table
[r_type
];
1517 elf32_tic6x_info_to_howto_rel (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*bfd_reloc
,
1518 Elf_Internal_Rela
*elf_reloc
)
1520 unsigned int r_type
;
1522 r_type
= ELF32_R_TYPE (elf_reloc
->r_info
);
1523 if (r_type
>= ARRAY_SIZE (elf32_tic6x_howto_table_rel
))
1524 bfd_reloc
->howto
= NULL
;
1526 bfd_reloc
->howto
= &elf32_tic6x_howto_table_rel
[r_type
];
1530 elf32_tic6x_set_use_rela_p (bfd
*abfd
, bfd_boolean use_rela_p
)
1532 elf32_tic6x_tdata (abfd
)->use_rela_p
= use_rela_p
;
1535 /* Create an entry in a C6X ELF linker hash table. */
1537 static struct bfd_hash_entry
*
1538 elf32_tic6x_link_hash_newfunc (struct bfd_hash_entry
*entry
,
1539 struct bfd_hash_table
*table
,
1542 /* Allocate the structure if it has not already been allocated by a
1546 entry
= bfd_hash_allocate (table
,
1547 sizeof (struct elf32_tic6x_link_hash_entry
));
1552 /* Call the allocation method of the superclass. */
1553 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
1556 struct elf32_tic6x_link_hash_entry
*eh
;
1558 eh
= (struct elf32_tic6x_link_hash_entry
*) entry
;
1559 eh
->dyn_relocs
= NULL
;
1565 /* Create a C6X ELF linker hash table. */
1567 static struct bfd_link_hash_table
*
1568 elf32_tic6x_link_hash_table_create (bfd
*abfd
)
1570 struct elf32_tic6x_link_hash_table
*ret
;
1571 bfd_size_type amt
= sizeof (struct elf32_tic6x_link_hash_table
);
1573 ret
= bfd_malloc (amt
);
1577 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
,
1578 elf32_tic6x_link_hash_newfunc
,
1579 sizeof (struct elf32_tic6x_link_hash_entry
),
1586 ret
->sym_cache
.abfd
= NULL
;
1588 ret
->elf
.is_relocatable_executable
= 1;
1590 return &ret
->elf
.root
;
1594 elf32_tic6x_final_link (bfd
*abfd
, struct bfd_link_info
*info
)
1598 obj_attribute
*out_attr
;
1599 out_attr
= elf_known_obj_attributes_proc (abfd
);
1600 if (out_attr
[Tag_ABI_PIC
].i
== 0)
1602 _bfd_error_handler (_("warning: generating a shared library "
1603 "containing non-PIC code"));
1605 if (out_attr
[Tag_ABI_PID
].i
== 0)
1607 _bfd_error_handler (_("warning: generating a shared library "
1608 "containing non-PID code"));
1611 /* Invoke the regular ELF backend linker to do all the work. */
1612 if (!bfd_elf_final_link (abfd
, info
))
1618 /* Destroy a C6X ELF linker hash table. */
1621 elf32_tic6x_link_hash_table_free (struct bfd_link_hash_table
*hash
)
1623 _bfd_generic_link_hash_table_free (hash
);
1626 /* Called to pass PARAMS to the backend. We store them in the hash table
1627 associated with INFO. */
1630 elf32_tic6x_setup (struct bfd_link_info
*info
,
1631 struct elf32_tic6x_params
*params
)
1633 struct elf32_tic6x_link_hash_table
*htab
= elf32_tic6x_hash_table (info
);
1634 htab
->params
= *params
;
1637 /* Determine if we're dealing with a DSBT object. */
1640 elf32_tic6x_using_dsbt (bfd
*abfd
)
1642 return bfd_elf_get_obj_attr_int (abfd
, OBJ_ATTR_PROC
,
1646 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got and .dsbt
1647 sections in DYNOBJ, and set up shortcuts to them in our hash
1651 elf32_tic6x_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
1653 struct elf32_tic6x_link_hash_table
*htab
;
1656 htab
= elf32_tic6x_hash_table (info
);
1660 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
1664 flags
= (SEC_ALLOC
| SEC_LOAD
1665 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
1666 htab
->dsbt
= bfd_make_section_anyway_with_flags (dynobj
, ".dsbt",
1668 if (htab
->dsbt
== NULL
1669 || ! bfd_set_section_alignment (dynobj
, htab
->dsbt
, 2)
1670 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.splt
, 5))
1673 htab
->sdynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
1675 htab
->srelbss
= bfd_get_section_by_name (dynobj
, ".rela.bss");
1678 || (!info
->shared
&& !htab
->srelbss
))
1685 elf32_tic6x_mkobject (bfd
*abfd
)
1689 ret
= bfd_elf_allocate_object (abfd
, sizeof (struct elf32_tic6x_obj_tdata
),
1692 elf32_tic6x_set_use_rela_p (abfd
, TRUE
);
1696 /* Install relocation RELA into section SRELA, incrementing its
1700 elf32_tic6x_install_rela (bfd
*output_bfd
, asection
*srela
,
1701 Elf_Internal_Rela
*rela
)
1704 bfd_vma off
= srela
->reloc_count
++ * sizeof (Elf32_External_Rela
);
1705 loc
= srela
->contents
+ off
;
1706 BFD_ASSERT (off
< srela
->size
);
1707 bfd_elf32_swap_reloca_out (output_bfd
, rela
, loc
);
1710 /* Create a dynamic reloc against the GOT at offset OFFSET. The contents
1711 of the GOT at this offset have been initialized with the relocation. */
1714 elf32_tic6x_make_got_dynreloc (bfd
*output_bfd
,
1715 struct elf32_tic6x_link_hash_table
*htab
,
1716 asection
*sym_sec
, bfd_vma offset
)
1718 asection
*sgot
= htab
->elf
.sgot
;
1719 Elf_Internal_Rela outrel
;
1722 outrel
.r_offset
= sgot
->output_section
->vma
+ sgot
->output_offset
+ offset
;
1723 outrel
.r_addend
= bfd_get_32 (output_bfd
, sgot
->contents
+ offset
);
1724 if (sym_sec
&& sym_sec
->output_section
1725 && ! bfd_is_abs_section (sym_sec
->output_section
)
1726 && ! bfd_is_und_section (sym_sec
->output_section
))
1728 dynindx
= elf_section_data (sym_sec
->output_section
)->dynindx
;
1729 outrel
.r_addend
-= sym_sec
->output_section
->vma
;
1735 outrel
.r_info
= ELF32_R_INFO (dynindx
, R_C6000_ABS32
);
1736 elf32_tic6x_install_rela (output_bfd
, htab
->elf
.srelgot
, &outrel
);
1739 /* Finish up dynamic symbol handling. We set the contents of various
1740 dynamic sections here. */
1743 elf32_tic6x_finish_dynamic_symbol (bfd
* output_bfd
,
1744 struct bfd_link_info
*info
,
1745 struct elf_link_hash_entry
*h
,
1746 Elf_Internal_Sym
* sym
)
1749 struct elf32_tic6x_link_hash_table
*htab
;
1751 htab
= elf32_tic6x_hash_table (info
);
1752 dynobj
= htab
->elf
.dynobj
;
1754 if (h
->plt
.offset
!= (bfd_vma
) -1)
1757 bfd_vma got_section_offset
, got_dp_offset
, rela_offset
;
1758 Elf_Internal_Rela rela
;
1760 asection
*plt
, *gotplt
, *relplt
;
1761 const struct elf_backend_data
*bed
;
1763 bed
= get_elf_backend_data (output_bfd
);
1765 BFD_ASSERT (htab
->elf
.splt
!= NULL
);
1766 plt
= htab
->elf
.splt
;
1767 gotplt
= htab
->elf
.sgotplt
;
1768 relplt
= htab
->elf
.srelplt
;
1770 /* This symbol has an entry in the procedure linkage table. Set
1773 if ((h
->dynindx
== -1
1774 && !((h
->forced_local
|| info
->executable
)
1776 && h
->type
== STT_GNU_IFUNC
))
1782 /* Get the index in the procedure linkage table which
1783 corresponds to this symbol. This is the index of this symbol
1784 in all the symbols for which we are making plt entries. The
1785 first entry in the procedure linkage table is reserved.
1787 Get the offset into the .got table of the entry that
1788 corresponds to this function. Each .got entry is 4 bytes.
1789 The first three are reserved.
1791 For static executables, we don't reserve anything. */
1793 plt_index
= h
->plt
.offset
/ PLT_ENTRY_SIZE
- 1;
1794 got_section_offset
= plt_index
+ bed
->got_header_size
/ 4;
1795 got_dp_offset
= got_section_offset
+ htab
->params
.dsbt_size
;
1796 rela_offset
= plt_index
* sizeof (Elf32_External_Rela
);
1798 got_section_offset
*= 4;
1800 /* Fill in the entry in the procedure linkage table. */
1802 /* ldw .d2t2 *+B14($GOT(f)), b2 */
1803 bfd_put_32 (output_bfd
, got_dp_offset
<< 8 | 0x0100006e,
1804 plt
->contents
+ h
->plt
.offset
);
1805 /* mvk .s2 low(rela_offset), b0 */
1806 bfd_put_32 (output_bfd
, (rela_offset
& 0xffff) << 7 | 0x0000002a,
1807 plt
->contents
+ h
->plt
.offset
+ 4);
1808 /* mvkh .s2 high(rela_offset), b0 */
1809 bfd_put_32 (output_bfd
, ((rela_offset
>> 16) & 0xffff) << 7 | 0x0000006a,
1810 plt
->contents
+ h
->plt
.offset
+ 8);
1812 bfd_put_32 (output_bfd
, 0x00002000,
1813 plt
->contents
+ h
->plt
.offset
+ 12);
1815 bfd_put_32 (output_bfd
, 0x00080362,
1816 plt
->contents
+ h
->plt
.offset
+ 16);
1818 bfd_put_32 (output_bfd
, 0x00008000,
1819 plt
->contents
+ h
->plt
.offset
+ 20);
1821 /* Fill in the entry in the global offset table. */
1822 bfd_put_32 (output_bfd
,
1823 (plt
->output_section
->vma
+ plt
->output_offset
),
1824 gotplt
->contents
+ got_section_offset
);
1826 /* Fill in the entry in the .rel.plt section. */
1827 rela
.r_offset
= (gotplt
->output_section
->vma
1828 + gotplt
->output_offset
1829 + got_section_offset
);
1830 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_C6000_JUMP_SLOT
);
1832 loc
= relplt
->contents
+ rela_offset
;
1833 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1835 if (!h
->def_regular
)
1837 /* Mark the symbol as undefined, rather than as defined in
1838 the .plt section. */
1839 sym
->st_shndx
= SHN_UNDEF
;
1844 if (h
->got
.offset
!= (bfd_vma
) -1)
1849 /* This symbol has an entry in the global offset table.
1852 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1853 srela
= bfd_get_section_by_name (dynobj
, ".rela.got");
1854 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
1856 /* If this is a -Bsymbolic link, and the symbol is defined
1857 locally, we just want to emit a RELATIVE reloc. Likewise if
1858 the symbol was forced to be local because of a version file.
1859 The entry in the global offset table will already have been
1860 initialized in the relocate_section function. */
1863 || h
->dynindx
== -1 || h
->forced_local
) && h
->def_regular
)
1865 asection
*s
= h
->root
.u
.def
.section
;
1866 elf32_tic6x_make_got_dynreloc (output_bfd
, htab
, s
,
1867 h
->got
.offset
& ~(bfd_vma
) 1);
1871 Elf_Internal_Rela outrel
;
1872 bfd_put_32 (output_bfd
, (bfd_vma
) 0,
1873 sgot
->contents
+ (h
->got
.offset
& ~(bfd_vma
) 1));
1874 outrel
.r_offset
= (sgot
->output_section
->vma
1875 + sgot
->output_offset
1876 + (h
->got
.offset
& ~(bfd_vma
) 1));
1877 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_C6000_ABS32
);
1878 outrel
.r_addend
= 0;
1880 elf32_tic6x_install_rela (output_bfd
, srela
, &outrel
);
1886 Elf_Internal_Rela rel
;
1888 /* This symbol needs a copy reloc. Set it up. */
1890 if (h
->dynindx
== -1
1891 || (h
->root
.type
!= bfd_link_hash_defined
1892 && h
->root
.type
!= bfd_link_hash_defweak
)
1893 || htab
->srelbss
== NULL
)
1896 rel
.r_offset
= (h
->root
.u
.def
.value
1897 + h
->root
.u
.def
.section
->output_section
->vma
1898 + h
->root
.u
.def
.section
->output_offset
);
1899 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_C6000_COPY
);
1902 elf32_tic6x_install_rela (output_bfd
, htab
->srelbss
, &rel
);
1905 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
1906 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
1907 || h
== elf_hash_table (info
)->hgot
)
1908 sym
->st_shndx
= SHN_ABS
;
1913 /* Unwinding tables are not referenced directly. This pass marks them as
1914 required if the corresponding code section is marked. */
1917 elf32_tic6x_gc_mark_extra_sections (struct bfd_link_info
*info
,
1918 elf_gc_mark_hook_fn gc_mark_hook
)
1921 Elf_Internal_Shdr
**elf_shdrp
;
1924 /* Marking EH data may cause additional code sections to be marked,
1925 requiring multiple passes. */
1930 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link_next
)
1934 if (! is_tic6x_elf (sub
))
1937 elf_shdrp
= elf_elfsections (sub
);
1938 for (o
= sub
->sections
; o
!= NULL
; o
= o
->next
)
1940 Elf_Internal_Shdr
*hdr
;
1942 hdr
= &elf_section_data (o
)->this_hdr
;
1943 if (hdr
->sh_type
== SHT_C6000_UNWIND
1945 && hdr
->sh_link
< elf_numsections (sub
)
1947 && elf_shdrp
[hdr
->sh_link
]->bfd_section
->gc_mark
)
1950 if (!_bfd_elf_gc_mark (info
, o
, gc_mark_hook
))
1960 /* Return TRUE if this is an unwinding table index. */
1963 is_tic6x_elf_unwind_section_name (const char *name
)
1965 return (CONST_STRNEQ (name
, ELF_STRING_C6000_unwind
)
1966 || CONST_STRNEQ (name
, ELF_STRING_C6000_unwind_once
));
1970 /* Set the type and flags for an unwinding index table. We do this by
1971 the section name, which is a hack, but ought to work. */
1974 elf32_tic6x_fake_sections (bfd
*abfd ATTRIBUTE_UNUSED
,
1975 Elf_Internal_Shdr
*hdr
, asection
*sec
)
1979 name
= bfd_get_section_name (abfd
, sec
);
1981 if (is_tic6x_elf_unwind_section_name (name
))
1983 hdr
->sh_type
= SHT_C6000_UNWIND
;
1984 hdr
->sh_flags
|= SHF_LINK_ORDER
;
1990 /* Update the got entry reference counts for the section being removed. */
1993 elf32_tic6x_gc_sweep_hook (bfd
*abfd
,
1994 struct bfd_link_info
*info
,
1996 const Elf_Internal_Rela
*relocs
)
1998 struct elf32_tic6x_link_hash_table
*htab
;
1999 Elf_Internal_Shdr
*symtab_hdr
;
2000 struct elf_link_hash_entry
**sym_hashes
;
2001 bfd_signed_vma
*local_got_refcounts
;
2002 const Elf_Internal_Rela
*rel
, *relend
;
2004 if (info
->relocatable
)
2007 htab
= elf32_tic6x_hash_table (info
);
2011 elf_section_data (sec
)->local_dynrel
= NULL
;
2013 symtab_hdr
= &elf_symtab_hdr (abfd
);
2014 sym_hashes
= elf_sym_hashes (abfd
);
2015 local_got_refcounts
= elf_local_got_refcounts (abfd
);
2017 relend
= relocs
+ sec
->reloc_count
;
2018 for (rel
= relocs
; rel
< relend
; rel
++)
2020 unsigned long r_symndx
;
2021 unsigned int r_type
;
2022 struct elf_link_hash_entry
*h
= NULL
;
2024 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2025 if (r_symndx
>= symtab_hdr
->sh_info
)
2027 struct elf32_tic6x_link_hash_entry
*eh
;
2028 struct elf_dyn_relocs
**pp
;
2029 struct elf_dyn_relocs
*p
;
2031 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
2032 while (h
->root
.type
== bfd_link_hash_indirect
2033 || h
->root
.type
== bfd_link_hash_warning
)
2034 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2035 eh
= (struct elf32_tic6x_link_hash_entry
*) h
;
2037 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
2040 /* Everything must go for SEC. */
2046 r_type
= ELF32_R_TYPE (rel
->r_info
);
2050 case R_C6000_SBR_GOT_U15_W
:
2051 case R_C6000_SBR_GOT_L16_W
:
2052 case R_C6000_SBR_GOT_H16_W
:
2053 case R_C6000_EHTYPE
:
2056 if (h
->got
.refcount
> 0)
2057 h
->got
.refcount
-= 1;
2059 else if (local_got_refcounts
!= NULL
)
2061 if (local_got_refcounts
[r_symndx
] > 0)
2062 local_got_refcounts
[r_symndx
] -= 1;
2074 /* Adjust a symbol defined by a dynamic object and referenced by a
2075 regular object. The current definition is in some section of the
2076 dynamic object, but we're not including those sections. We have to
2077 change the definition to something the rest of the link can
2081 elf32_tic6x_adjust_dynamic_symbol (struct bfd_link_info
*info
,
2082 struct elf_link_hash_entry
*h
)
2084 struct elf32_tic6x_link_hash_table
*htab
;
2088 dynobj
= elf_hash_table (info
)->dynobj
;
2090 /* Make sure we know what is going on here. */
2091 BFD_ASSERT (dynobj
!= NULL
2093 || h
->u
.weakdef
!= NULL
2094 || (h
->def_dynamic
&& h
->ref_regular
&& !h
->def_regular
)));
2096 /* If this is a function, put it in the procedure linkage table. We
2097 will fill in the contents of the procedure linkage table later,
2098 when we know the address of the .got section. */
2099 if (h
->type
== STT_FUNC
2102 if (h
->plt
.refcount
<= 0
2103 || SYMBOL_CALLS_LOCAL (info
, h
)
2104 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
2105 && h
->root
.type
== bfd_link_hash_undefweak
))
2107 /* This case can occur if we saw a PLT32 reloc in an input
2108 file, but the symbol was never referred to by a dynamic
2109 object, or if all references were garbage collected. In
2110 such a case, we don't actually need to build a procedure
2111 linkage table, and we can just do a PC32 reloc instead. */
2112 h
->plt
.offset
= (bfd_vma
) -1;
2119 /* If this is a weak symbol, and there is a real definition, the
2120 processor independent code will have arranged for us to see the
2121 real definition first, and we can just use the same value. */
2122 if (h
->u
.weakdef
!= NULL
)
2124 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
2125 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
2126 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
2127 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
2128 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
2132 /* This is a reference to a symbol defined by a dynamic object which
2133 is not a function. */
2135 /* If we are creating a shared library, we must presume that the
2136 only references to the symbol are via the global offset table.
2137 For such cases we need not do anything here; the relocations will
2138 be handled correctly by relocate_section. */
2142 /* If there are no references to this symbol that do not use the
2143 GOT, we don't need to generate a copy reloc. */
2144 if (!h
->non_got_ref
)
2147 /* If -z nocopyreloc was given, we won't generate them either. */
2148 if (info
->nocopyreloc
)
2154 htab
= elf32_tic6x_hash_table (info
);
2160 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
2161 h
->root
.root
.string
);
2165 /* We must allocate the symbol in our .dynbss section, which will
2166 become part of the .bss section of the executable. There will be
2167 an entry for this symbol in the .dynsym section. The dynamic
2168 object will contain position independent code, so all references
2169 from the dynamic object to this symbol will go through the global
2170 offset table. The dynamic linker will use the .dynsym entry to
2171 determine the address it must put in the global offset table, so
2172 both the dynamic object and the regular object will refer to the
2173 same memory location for the variable. */
2175 /* We must generate a R_C6000_COPY reloc to tell the dynamic linker to
2176 copy the initial value out of the dynamic object and into the
2177 runtime process image. */
2178 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
2180 htab
->srelbss
->size
+= sizeof (Elf32_External_Rela
);
2186 return _bfd_elf_adjust_dynamic_copy (h
, s
);
2190 elf32_tic6x_new_section_hook (bfd
*abfd
, asection
*sec
)
2194 /* Allocate target specific section data. */
2195 if (!sec
->used_by_bfd
)
2197 _tic6x_elf_section_data
*sdata
;
2198 bfd_size_type amt
= sizeof (*sdata
);
2200 sdata
= (_tic6x_elf_section_data
*) bfd_zalloc (abfd
, amt
);
2203 sec
->used_by_bfd
= sdata
;
2206 ret
= _bfd_elf_new_section_hook (abfd
, sec
);
2207 sec
->use_rela_p
= elf32_tic6x_tdata (abfd
)->use_rela_p
;
2212 /* Return true if relocation REL against section SEC is a REL rather
2213 than RELA relocation. RELOCS is the first relocation in the
2214 section and ABFD is the bfd that contains SEC. */
2217 elf32_tic6x_rel_relocation_p (bfd
*abfd
, asection
*sec
,
2218 const Elf_Internal_Rela
*relocs
,
2219 const Elf_Internal_Rela
*rel
)
2221 Elf_Internal_Shdr
*rel_hdr
;
2222 const struct elf_backend_data
*bed
;
2224 /* To determine which flavor of relocation this is, we depend on the
2225 fact that the INPUT_SECTION's REL_HDR is read before RELA_HDR. */
2226 rel_hdr
= elf_section_data (sec
)->rel
.hdr
;
2227 if (rel_hdr
== NULL
)
2229 bed
= get_elf_backend_data (abfd
);
2230 return ((size_t) (rel
- relocs
)
2231 < NUM_SHDR_ENTRIES (rel_hdr
) * bed
->s
->int_rels_per_ext_rel
);
2234 /* We need dynamic symbols for every section, since segments can
2235 relocate independently. */
2237 elf32_tic6x_link_omit_section_dynsym (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2238 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
2241 switch (elf_section_data (p
)->this_hdr
.sh_type
)
2245 /* If sh_type is yet undecided, assume it could be
2246 SHT_PROGBITS/SHT_NOBITS. */
2250 /* There shouldn't be section relative relocations
2251 against any other section. */
2258 elf32_tic6x_relocate_section (bfd
*output_bfd
,
2259 struct bfd_link_info
*info
,
2261 asection
*input_section
,
2263 Elf_Internal_Rela
*relocs
,
2264 Elf_Internal_Sym
*local_syms
,
2265 asection
**local_sections
)
2267 struct elf32_tic6x_link_hash_table
*htab
;
2268 Elf_Internal_Shdr
*symtab_hdr
;
2269 struct elf_link_hash_entry
**sym_hashes
;
2270 bfd_vma
*local_got_offsets
;
2271 Elf_Internal_Rela
*rel
;
2272 Elf_Internal_Rela
*relend
;
2273 bfd_boolean ok
= TRUE
;
2275 htab
= elf32_tic6x_hash_table (info
);
2276 symtab_hdr
= & elf_symtab_hdr (input_bfd
);
2277 sym_hashes
= elf_sym_hashes (input_bfd
);
2278 local_got_offsets
= elf_local_got_offsets (input_bfd
);
2280 relend
= relocs
+ input_section
->reloc_count
;
2282 for (rel
= relocs
; rel
< relend
; rel
++)
2285 unsigned long r_symndx
;
2287 reloc_howto_type
*howto
;
2288 Elf_Internal_Sym
*sym
;
2290 struct elf_link_hash_entry
*h
;
2291 bfd_vma off
, off2
, relocation
;
2292 bfd_boolean unresolved_reloc
;
2293 bfd_reloc_status_type r
;
2294 struct bfd_link_hash_entry
*sbh
;
2297 r_type
= ELF32_R_TYPE (rel
->r_info
);
2298 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2300 is_rel
= elf32_tic6x_rel_relocation_p (input_bfd
, input_section
,
2304 elf32_tic6x_info_to_howto_rel (input_bfd
, &bfd_reloc
, rel
);
2306 elf32_tic6x_info_to_howto (input_bfd
, &bfd_reloc
, rel
);
2307 howto
= bfd_reloc
.howto
;
2310 bfd_set_error (bfd_error_bad_value
);
2317 unresolved_reloc
= FALSE
;
2319 if (r_symndx
< symtab_hdr
->sh_info
)
2321 sym
= local_syms
+ r_symndx
;
2322 sec
= local_sections
[r_symndx
];
2323 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
2329 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
2330 r_symndx
, symtab_hdr
, sym_hashes
,
2332 unresolved_reloc
, warned
);
2335 if (sec
!= NULL
&& elf_discarded_section (sec
))
2336 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
2337 rel
, relend
, howto
, contents
);
2339 if (info
->relocatable
)
2343 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
2346 relocation
= sec
->output_offset
+ sym
->st_value
;
2347 r
= _bfd_relocate_contents (howto
, input_bfd
, relocation
,
2348 contents
+ rel
->r_offset
);
2358 case R_C6000_FPHEAD
:
2360 /* No action needed. */
2363 case R_C6000_PCR_S21
:
2364 /* A branch to an undefined weak symbol is turned into a
2365 "b .s2 B3" instruction if the existing insn is of the
2366 form "b .s2 symbol". */
2367 if (h
? h
->root
.type
== bfd_link_hash_undefweak
2368 && (htab
->elf
.splt
== NULL
|| h
->plt
.offset
== (bfd_vma
) -1)
2369 : r_symndx
!= STN_UNDEF
&& bfd_is_und_section (sec
))
2371 unsigned long oldval
;
2372 oldval
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2374 if ((oldval
& 0x7e) == 0x12)
2376 oldval
&= 0xF0000001;
2377 bfd_put_32 (input_bfd
, oldval
| 0x000c0362,
2378 contents
+ rel
->r_offset
);
2384 case R_C6000_PCR_S12
:
2385 case R_C6000_PCR_S10
:
2386 case R_C6000_PCR_S7
:
2388 && h
->plt
.offset
!= (bfd_vma
) -1
2389 && htab
->elf
.splt
!= NULL
)
2391 relocation
= (htab
->elf
.splt
->output_section
->vma
2392 + htab
->elf
.splt
->output_offset
2396 /* Generic PC-relative handling produces a value relative to
2397 the exact location of the relocation. Adjust it to be
2398 relative to the start of the fetch packet instead. */
2399 relocation
+= (input_section
->output_section
->vma
2400 + input_section
->output_offset
2401 + rel
->r_offset
) & 0x1f;
2402 unresolved_reloc
= FALSE
;
2405 case R_C6000_PCR_H16
:
2406 case R_C6000_PCR_L16
:
2407 off
= (input_section
->output_section
->vma
2408 + input_section
->output_offset
2410 /* These must be calculated as R = S - FP(FP(PC) - A).
2411 PC, here, is the value we just computed in OFF. RELOCATION
2412 has the address of S + A. */
2413 relocation
-= rel
->r_addend
;
2414 off2
= ((off
& ~(bfd_vma
)0x1f) - rel
->r_addend
) & (bfd_vma
)~0x1f;
2415 off2
= relocation
- off2
;
2416 relocation
= off
+ off2
;
2419 case R_C6000_DSBT_INDEX
:
2420 relocation
= elf32_tic6x_hash_table (info
)->params
.dsbt_index
;
2421 if (!info
->shared
|| relocation
!= 0)
2428 case R_C6000_ABS_S16
:
2429 case R_C6000_ABS_L16
:
2430 case R_C6000_ABS_H16
:
2431 /* When generating a shared object or relocatable executable, these
2432 relocations are copied into the output file to be resolved at
2434 if ((info
->shared
|| elf32_tic6x_using_dsbt (output_bfd
))
2435 && (input_section
->flags
& SEC_ALLOC
)
2437 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
2438 || h
->root
.type
!= bfd_link_hash_undefweak
))
2440 Elf_Internal_Rela outrel
;
2441 bfd_boolean skip
, relocate
;
2444 unresolved_reloc
= FALSE
;
2446 sreloc
= elf_section_data (input_section
)->sreloc
;
2447 BFD_ASSERT (sreloc
!= NULL
&& sreloc
->contents
!= NULL
);
2453 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
2455 if (outrel
.r_offset
== (bfd_vma
) -1)
2457 else if (outrel
.r_offset
== (bfd_vma
) -2)
2458 skip
= TRUE
, relocate
= TRUE
;
2459 outrel
.r_offset
+= (input_section
->output_section
->vma
2460 + input_section
->output_offset
);
2463 memset (&outrel
, 0, sizeof outrel
);
2468 || !h
->def_regular
))
2470 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
2471 outrel
.r_addend
= rel
->r_addend
;
2477 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2479 if (bfd_is_abs_section (sec
))
2481 else if (sec
== NULL
|| sec
->owner
== NULL
)
2483 bfd_set_error (bfd_error_bad_value
);
2490 osec
= sec
->output_section
;
2491 indx
= elf_section_data (osec
)->dynindx
;
2492 outrel
.r_addend
-= osec
->vma
;
2493 BFD_ASSERT (indx
!= 0);
2496 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
2499 elf32_tic6x_install_rela (output_bfd
, sreloc
, &outrel
);
2501 /* If this reloc is against an external symbol, we do not want to
2502 fiddle with the addend. Otherwise, we need to include the symbol
2503 value so that it becomes an addend for the dynamic reloc. */
2508 /* Generic logic OK. */
2511 case R_C6000_SBR_U15_B
:
2512 case R_C6000_SBR_U15_H
:
2513 case R_C6000_SBR_U15_W
:
2514 case R_C6000_SBR_S16
:
2515 case R_C6000_SBR_L16_B
:
2516 case R_C6000_SBR_L16_H
:
2517 case R_C6000_SBR_L16_W
:
2518 case R_C6000_SBR_H16_B
:
2519 case R_C6000_SBR_H16_H
:
2520 case R_C6000_SBR_H16_W
:
2521 sbh
= bfd_link_hash_lookup (info
->hash
, "__c6xabi_DSBT_BASE",
2522 FALSE
, FALSE
, TRUE
);
2524 && (sbh
->type
== bfd_link_hash_defined
2525 || sbh
->type
== bfd_link_hash_defweak
))
2527 if (h
? (h
->root
.type
== bfd_link_hash_undefweak
2528 && (htab
->elf
.splt
== NULL
2529 || h
->plt
.offset
== (bfd_vma
) -1))
2530 : r_symndx
!= STN_UNDEF
&& bfd_is_und_section (sec
))
2533 relocation
-= (sbh
->u
.def
.value
2534 + sbh
->u
.def
.section
->output_section
->vma
2535 + sbh
->u
.def
.section
->output_offset
);
2539 (*_bfd_error_handler
) (_("%B: SB-relative relocation but "
2540 "__c6xabi_DSBT_BASE not defined"),
2547 case R_C6000_SBR_GOT_U15_W
:
2548 case R_C6000_SBR_GOT_L16_W
:
2549 case R_C6000_SBR_GOT_H16_W
:
2550 case R_C6000_EHTYPE
:
2551 /* Relocation is to the entry for this symbol in the global
2553 if (htab
->elf
.sgot
== NULL
)
2560 off
= h
->got
.offset
;
2561 dyn
= htab
->elf
.dynamic_sections_created
;
2562 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
2564 && SYMBOL_REFERENCES_LOCAL (info
, h
))
2565 || (ELF_ST_VISIBILITY (h
->other
)
2566 && h
->root
.type
== bfd_link_hash_undefweak
))
2568 /* This is actually a static link, or it is a
2569 -Bsymbolic link and the symbol is defined
2570 locally, or the symbol was forced to be local
2571 because of a version file. We must initialize
2572 this entry in the global offset table. Since the
2573 offset must always be a multiple of 4, we use the
2574 least significant bit to record whether we have
2575 initialized it already.
2577 When doing a dynamic link, we create a .rel.got
2578 relocation entry to initialize the value. This
2579 is done in the finish_dynamic_symbol routine. */
2584 bfd_put_32 (output_bfd
, relocation
,
2585 htab
->elf
.sgot
->contents
+ off
);
2588 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
,
2590 && !(ELF_ST_VISIBILITY (h
->other
)
2591 && h
->root
.type
== bfd_link_hash_undefweak
))
2592 elf32_tic6x_make_got_dynreloc (output_bfd
, htab
, sec
,
2597 unresolved_reloc
= FALSE
;
2601 if (local_got_offsets
== NULL
)
2604 off
= local_got_offsets
[r_symndx
];
2606 /* The offset must always be a multiple of 4. We use
2607 the least significant bit to record whether we have
2608 already generated the necessary reloc. */
2613 bfd_put_32 (output_bfd
, relocation
,
2614 htab
->elf
.sgot
->contents
+ off
);
2616 if (info
->shared
|| elf32_tic6x_using_dsbt (output_bfd
))
2617 elf32_tic6x_make_got_dynreloc (output_bfd
, htab
, sec
, off
);
2619 local_got_offsets
[r_symndx
] |= 1;
2623 if (off
>= (bfd_vma
) -2)
2627 relocation
= (htab
->elf
.sgot
->output_section
->vma
2628 + htab
->elf
.sgot
->output_offset
+ off
2629 - htab
->dsbt
->output_section
->vma
2630 - htab
->dsbt
->output_offset
);
2632 relocation
= (htab
->elf
.sgot
->output_section
->vma
2633 + htab
->elf
.sgot
->output_offset
+ off
2634 - htab
->elf
.sgotplt
->output_section
->vma
2635 - htab
->elf
.sgotplt
->output_offset
);
2637 if (rel
->r_addend
!= 0)
2639 /* We can't do anything for a relocation which is against
2640 a symbol *plus offset*. GOT holds relocations for
2641 symbols. Make this an error; the compiler isn't
2642 allowed to pass us these kinds of things. */
2644 (*_bfd_error_handler
)
2645 (_("%B, section %A: relocation %s with non-zero addend %d"
2646 " against local symbol"),
2649 elf32_tic6x_howto_table
[r_type
].name
,
2652 (*_bfd_error_handler
)
2653 (_("%B, section %A: relocation %s with non-zero addend %d"
2654 " against symbol `%s'"),
2657 elf32_tic6x_howto_table
[r_type
].name
,
2659 h
->root
.root
.string
[0] != '\0' ? h
->root
.root
.string
2660 : _("[whose name is lost]"));
2662 bfd_set_error (bfd_error_bad_value
);
2667 case R_C6000_PREL31
:
2669 && h
->plt
.offset
!= (bfd_vma
) -1
2670 && htab
->elf
.splt
!= NULL
)
2672 relocation
= (htab
->elf
.splt
->output_section
->vma
2673 + htab
->elf
.splt
->output_offset
2679 /* Invalid in relocatable object. */
2681 /* Unknown relocation. */
2682 (*_bfd_error_handler
) (_("%B: invalid relocation type %d"),
2688 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
2689 contents
, rel
->r_offset
,
2690 relocation
, rel
->r_addend
);
2693 if (r
== bfd_reloc_ok
2694 && howto
->complain_on_overflow
== complain_overflow_bitfield
)
2696 /* Generic overflow handling accepts cases the ABI says
2697 should be rejected for R_C6000_ABS16 and
2699 bfd_vma value
= (relocation
+ rel
->r_addend
) & 0xffffffff;
2700 bfd_vma sbit
= 1 << (howto
->bitsize
- 1);
2701 bfd_vma sbits
= (-(bfd_vma
) sbit
) & 0xffffffff;
2702 bfd_vma value_sbits
= value
& sbits
;
2704 if (value_sbits
!= 0
2705 && value_sbits
!= sbit
2706 && value_sbits
!= sbits
)
2707 r
= bfd_reloc_overflow
;
2710 if (r
!= bfd_reloc_ok
)
2713 const char *error_message
;
2716 name
= h
->root
.root
.string
;
2719 name
= bfd_elf_string_from_elf_section (input_bfd
,
2720 symtab_hdr
->sh_link
,
2725 name
= bfd_section_name (input_bfd
, sec
);
2730 case bfd_reloc_overflow
:
2731 /* If the overflowing reloc was to an undefined symbol,
2732 we have already printed one error message and there
2733 is no point complaining again. */
2735 h
->root
.type
!= bfd_link_hash_undefined
)
2736 && (!((*info
->callbacks
->reloc_overflow
)
2737 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
2738 (bfd_vma
) 0, input_bfd
, input_section
,
2743 case bfd_reloc_undefined
:
2744 if (!((*info
->callbacks
->undefined_symbol
)
2745 (info
, name
, input_bfd
, input_section
,
2746 rel
->r_offset
, TRUE
)))
2750 case bfd_reloc_outofrange
:
2751 error_message
= _("out of range");
2754 case bfd_reloc_notsupported
:
2755 error_message
= _("unsupported relocation");
2758 case bfd_reloc_dangerous
:
2759 error_message
= _("dangerous relocation");
2763 error_message
= _("unknown error");
2767 BFD_ASSERT (error_message
!= NULL
);
2768 if (!((*info
->callbacks
->reloc_dangerous
)
2769 (info
, error_message
, input_bfd
, input_section
,
2781 /* Look through the relocs for a section during the first phase, and
2782 calculate needed space in the global offset table, procedure linkage
2783 table, and dynamic reloc sections. */
2786 elf32_tic6x_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
2787 asection
*sec
, const Elf_Internal_Rela
*relocs
)
2789 struct elf32_tic6x_link_hash_table
*htab
;
2790 Elf_Internal_Shdr
*symtab_hdr
;
2791 struct elf_link_hash_entry
**sym_hashes
;
2792 const Elf_Internal_Rela
*rel
;
2793 const Elf_Internal_Rela
*rel_end
;
2796 if (info
->relocatable
)
2799 htab
= elf32_tic6x_hash_table (info
);
2800 symtab_hdr
= &elf_symtab_hdr (abfd
);
2801 sym_hashes
= elf_sym_hashes (abfd
);
2803 /* Create dynamic sections for relocatable executables so that we can
2804 copy relocations. */
2805 if ((info
->shared
|| elf32_tic6x_using_dsbt (abfd
))
2806 && ! htab
->elf
.dynamic_sections_created
)
2808 if (! _bfd_elf_link_create_dynamic_sections (abfd
, info
))
2814 rel_end
= relocs
+ sec
->reloc_count
;
2815 for (rel
= relocs
; rel
< rel_end
; rel
++)
2817 unsigned int r_type
;
2818 unsigned long r_symndx
;
2819 struct elf_link_hash_entry
*h
;
2820 Elf_Internal_Sym
*isym
;
2822 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2823 r_type
= ELF32_R_TYPE (rel
->r_info
);
2825 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
2827 (*_bfd_error_handler
) (_("%B: bad symbol index: %d"),
2833 if (r_symndx
< symtab_hdr
->sh_info
)
2835 /* A local symbol. */
2836 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
2845 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
2846 while (h
->root
.type
== bfd_link_hash_indirect
2847 || h
->root
.type
== bfd_link_hash_warning
)
2848 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2853 case R_C6000_PCR_S21
:
2854 case R_C6000_PREL31
:
2855 /* This symbol requires a procedure linkage table entry. We
2856 actually build the entry in adjust_dynamic_symbol,
2857 because this might be a case of linking PIC code which is
2858 never referenced by a dynamic object, in which case we
2859 don't need to generate a procedure linkage table entry
2862 /* If this is a local symbol, we resolve it directly without
2863 creating a procedure linkage table entry. */
2868 h
->plt
.refcount
+= 1;
2871 case R_C6000_SBR_GOT_U15_W
:
2872 case R_C6000_SBR_GOT_L16_W
:
2873 case R_C6000_SBR_GOT_H16_W
:
2874 case R_C6000_EHTYPE
:
2875 /* This symbol requires a global offset table entry. */
2878 h
->got
.refcount
+= 1;
2882 bfd_signed_vma
*local_got_refcounts
;
2884 /* This is a global offset table entry for a local symbol. */
2885 local_got_refcounts
= elf_local_got_refcounts (abfd
);
2886 if (local_got_refcounts
== NULL
)
2890 size
= symtab_hdr
->sh_info
;
2891 size
*= (sizeof (bfd_signed_vma
)
2892 + sizeof (bfd_vma
) + sizeof(char));
2893 local_got_refcounts
= bfd_zalloc (abfd
, size
);
2894 if (local_got_refcounts
== NULL
)
2896 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
2898 local_got_refcounts
[r_symndx
] += 1;
2901 if (htab
->elf
.sgot
== NULL
)
2903 if (htab
->elf
.dynobj
== NULL
)
2904 htab
->elf
.dynobj
= abfd
;
2905 if (!_bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
2910 case R_C6000_DSBT_INDEX
:
2911 /* We'd like to check for nonzero dsbt_index here, but it's
2912 set up only after check_relocs is called. Instead, we
2913 store the number of R_C6000_DSBT_INDEX relocs in the
2914 pc_count field, and potentially discard the extra space
2915 in elf32_tic6x_allocate_dynrelocs. */
2923 case R_C6000_ABS_S16
:
2924 case R_C6000_ABS_L16
:
2925 case R_C6000_ABS_H16
:
2926 /* If we are creating a shared library, and this is a reloc
2927 against a global symbol, or a non PC relative reloc
2928 against a local symbol, then we need to copy the reloc
2929 into the shared library. However, if we are linking with
2930 -Bsymbolic, we do not need to copy a reloc against a
2931 global symbol which is defined in an object we are
2932 including in the link (i.e., DEF_REGULAR is set). At
2933 this point we have not seen all the input files, so it is
2934 possible that DEF_REGULAR is not set now but will be set
2935 later (it is never cleared). In case of a weak definition,
2936 DEF_REGULAR may be cleared later by a strong definition in
2937 a shared library. We account for that possibility below by
2938 storing information in the relocs_copied field of the hash
2939 table entry. A similar situation occurs when creating
2940 shared libraries and symbol visibility changes render the
2943 If on the other hand, we are creating an executable, we
2944 may need to keep relocations for symbols satisfied by a
2945 dynamic library if we manage to avoid copy relocs for the
2947 if ((info
->shared
|| elf32_tic6x_using_dsbt (abfd
))
2948 && (sec
->flags
& SEC_ALLOC
) != 0)
2950 struct elf_dyn_relocs
*p
;
2951 struct elf_dyn_relocs
**head
;
2953 /* We must copy these reloc types into the output file.
2954 Create a reloc section in dynobj and make room for
2958 if (htab
->elf
.dynobj
== NULL
)
2959 htab
->elf
.dynobj
= abfd
;
2961 sreloc
= _bfd_elf_make_dynamic_reloc_section
2962 (sec
, htab
->elf
.dynobj
, 2, abfd
, /*rela? */ TRUE
);
2968 /* If this is a global symbol, we count the number of
2969 relocations we need for this symbol. */
2972 head
= &((struct elf32_tic6x_link_hash_entry
*) h
)->dyn_relocs
;
2976 /* Track dynamic relocs needed for local syms too.
2977 We really need local syms available to do this
2982 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
2986 vpp
= &elf_section_data (s
)->local_dynrel
;
2987 head
= (struct elf_dyn_relocs
**)vpp
;
2991 if (p
== NULL
|| p
->sec
!= sec
)
2993 bfd_size_type amt
= sizeof *p
;
2994 p
= bfd_alloc (htab
->elf
.dynobj
, amt
);
3005 if (r_type
== R_C6000_DSBT_INDEX
)
3010 case R_C6000_SBR_U15_B
:
3011 case R_C6000_SBR_U15_H
:
3012 case R_C6000_SBR_U15_W
:
3013 case R_C6000_SBR_S16
:
3014 case R_C6000_SBR_L16_B
:
3015 case R_C6000_SBR_L16_H
:
3016 case R_C6000_SBR_L16_W
:
3017 case R_C6000_SBR_H16_B
:
3018 case R_C6000_SBR_H16_H
:
3019 case R_C6000_SBR_H16_W
:
3020 if (h
!= NULL
&& info
->executable
)
3022 /* For B14-relative addresses, we might need a copy
3037 elf32_tic6x_add_symbol_hook (bfd
*abfd
,
3038 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3039 Elf_Internal_Sym
*sym
,
3040 const char **namep ATTRIBUTE_UNUSED
,
3041 flagword
*flagsp ATTRIBUTE_UNUSED
,
3045 switch (sym
->st_shndx
)
3047 case SHN_TIC6X_SCOMMON
:
3048 *secp
= bfd_make_section_old_way (abfd
, ".scommon");
3049 (*secp
)->flags
|= SEC_IS_COMMON
;
3050 *valp
= sym
->st_size
;
3051 bfd_set_section_alignment (abfd
, *secp
, bfd_log2 (sym
->st_value
));
3059 elf32_tic6x_symbol_processing (bfd
*abfd ATTRIBUTE_UNUSED
, asymbol
*asym
)
3061 elf_symbol_type
*elfsym
;
3063 elfsym
= (elf_symbol_type
*) asym
;
3064 switch (elfsym
->internal_elf_sym
.st_shndx
)
3066 case SHN_TIC6X_SCOMMON
:
3067 if (tic6x_elf_scom_section
.name
== NULL
)
3069 /* Initialize the small common section. */
3070 tic6x_elf_scom_section
.name
= ".scommon";
3071 tic6x_elf_scom_section
.flags
= SEC_IS_COMMON
;
3072 tic6x_elf_scom_section
.output_section
= &tic6x_elf_scom_section
;
3073 tic6x_elf_scom_section
.symbol
= &tic6x_elf_scom_symbol
;
3074 tic6x_elf_scom_section
.symbol_ptr_ptr
= &tic6x_elf_scom_symbol_ptr
;
3075 tic6x_elf_scom_symbol
.name
= ".scommon";
3076 tic6x_elf_scom_symbol
.flags
= BSF_SECTION_SYM
;
3077 tic6x_elf_scom_symbol
.section
= &tic6x_elf_scom_section
;
3078 tic6x_elf_scom_symbol_ptr
= &tic6x_elf_scom_symbol
;
3080 asym
->section
= &tic6x_elf_scom_section
;
3081 asym
->value
= elfsym
->internal_elf_sym
.st_size
;
3087 elf32_tic6x_link_output_symbol_hook (struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3088 const char *name ATTRIBUTE_UNUSED
,
3089 Elf_Internal_Sym
*sym
,
3090 asection
*input_sec
,
3091 struct elf_link_hash_entry
*h ATTRIBUTE_UNUSED
)
3093 /* If we see a common symbol, which implies a relocatable link, then
3094 if a symbol was small common in an input file, mark it as small
3095 common in the output file. */
3096 if (sym
->st_shndx
== SHN_COMMON
&& strcmp (input_sec
->name
, ".scommon") == 0)
3097 sym
->st_shndx
= SHN_TIC6X_SCOMMON
;
3103 elf32_tic6x_section_from_bfd_section (bfd
*abfd ATTRIBUTE_UNUSED
,
3107 if (strcmp (bfd_get_section_name (abfd
, sec
), ".scommon") == 0)
3109 *retval
= SHN_TIC6X_SCOMMON
;
3116 /* Allocate space in .plt, .got and associated reloc sections for
3120 elf32_tic6x_allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
3122 struct bfd_link_info
*info
;
3123 struct elf32_tic6x_link_hash_table
*htab
;
3124 struct elf32_tic6x_link_hash_entry
*eh
;
3125 struct elf_dyn_relocs
*p
;
3127 if (h
->root
.type
== bfd_link_hash_indirect
)
3130 eh
= (struct elf32_tic6x_link_hash_entry
*) h
;
3131 info
= (struct bfd_link_info
*) inf
;
3132 htab
= elf32_tic6x_hash_table (info
);
3134 if (htab
->elf
.dynamic_sections_created
&& h
->plt
.refcount
> 0)
3136 /* Make sure this symbol is output as a dynamic symbol.
3137 Undefined weak syms won't yet be marked as dynamic. */
3138 if (h
->dynindx
== -1 && !h
->forced_local
)
3140 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
3145 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
3147 asection
*s
= htab
->elf
.splt
;
3149 /* If this is the first .plt entry, make room for the special
3152 s
->size
+= PLT_ENTRY_SIZE
;
3154 h
->plt
.offset
= s
->size
;
3156 /* If this symbol is not defined in a regular file, and we are
3157 not generating a shared library, then set the symbol to this
3158 location in the .plt. This is required to make function
3159 pointers compare as equal between the normal executable and
3160 the shared library. */
3161 if (! info
->shared
&& !h
->def_regular
)
3163 h
->root
.u
.def
.section
= s
;
3164 h
->root
.u
.def
.value
= h
->plt
.offset
;
3167 /* Make room for this entry. */
3168 s
->size
+= PLT_ENTRY_SIZE
;
3169 /* We also need to make an entry in the .got.plt section, which
3170 will be placed in the .got section by the linker script. */
3171 htab
->elf
.sgotplt
->size
+= 4;
3172 /* We also need to make an entry in the .rel.plt section. */
3173 htab
->elf
.srelplt
->size
+= sizeof (Elf32_External_Rela
);
3177 h
->plt
.offset
= (bfd_vma
) -1;
3183 h
->plt
.offset
= (bfd_vma
) -1;
3187 if (h
->got
.refcount
> 0)
3191 /* Make sure this symbol is output as a dynamic symbol.
3192 Undefined weak syms won't yet be marked as dynamic. */
3193 if (h
->dynindx
== -1
3194 && !h
->forced_local
)
3196 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
3201 h
->got
.offset
= s
->size
;
3204 if (!(ELF_ST_VISIBILITY (h
->other
)
3205 && h
->root
.type
== bfd_link_hash_undefweak
))
3206 htab
->elf
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
3209 h
->got
.offset
= (bfd_vma
) -1;
3211 if (eh
->dyn_relocs
== NULL
)
3214 /* Discard relocs on undefined weak syms with non-default
3216 if (info
->shared
|| elf32_tic6x_using_dsbt (htab
->obfd
))
3218 /* We use the pc_count field to hold the number of
3219 R_C6000_DSBT_INDEX relocs. */
3220 if (htab
->params
.dsbt_index
!= 0)
3222 struct elf_dyn_relocs
**pp
;
3224 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
3226 p
->count
-= p
->pc_count
;
3235 if (eh
->dyn_relocs
!= NULL
3236 && h
->root
.type
== bfd_link_hash_undefweak
)
3238 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
3239 eh
->dyn_relocs
= NULL
;
3241 /* Make sure undefined weak symbols are output as a dynamic
3243 else if (h
->dynindx
== -1
3244 && !h
->forced_local
)
3246 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
3252 /* Finally, allocate space. */
3253 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
3257 sreloc
= elf_section_data (p
->sec
)->sreloc
;
3259 BFD_ASSERT (sreloc
!= NULL
);
3260 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
3266 /* Find any dynamic relocs that apply to read-only sections. */
3269 elf32_tic6x_readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
3271 struct elf32_tic6x_link_hash_entry
*eh
;
3272 struct elf_dyn_relocs
*p
;
3274 eh
= (struct elf32_tic6x_link_hash_entry
*) h
;
3275 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
3277 asection
*s
= p
->sec
->output_section
;
3279 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
3281 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
3283 info
->flags
|= DF_TEXTREL
;
3285 /* Not an error, just cut short the traversal. */
3292 /* Set the sizes of the dynamic sections. */
3295 elf32_tic6x_size_dynamic_sections (bfd
*output_bfd
, struct bfd_link_info
*info
)
3297 struct elf32_tic6x_link_hash_table
*htab
;
3303 htab
= elf32_tic6x_hash_table (info
);
3304 dynobj
= htab
->elf
.dynobj
;
3308 if (htab
->elf
.dynamic_sections_created
)
3310 /* Set the contents of the .interp section to the interpreter. */
3311 if (info
->executable
)
3313 s
= bfd_get_section_by_name (dynobj
, ".interp");
3316 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
3317 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
3321 /* Set up .got offsets for local syms, and space for local dynamic
3323 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
3325 bfd_signed_vma
*local_got
;
3326 bfd_signed_vma
*end_local_got
;
3327 char *local_tls_type
;
3328 bfd_vma
*local_tlsdesc_gotent
;
3329 bfd_size_type locsymcount
;
3330 Elf_Internal_Shdr
*symtab_hdr
;
3333 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
3335 struct elf_dyn_relocs
*p
;
3337 for (p
= ((struct elf_dyn_relocs
*)
3338 elf_section_data (s
)->local_dynrel
);
3342 if (!bfd_is_abs_section (p
->sec
)
3343 && bfd_is_abs_section (p
->sec
->output_section
))
3345 /* Input section has been discarded, either because
3346 it is a copy of a linkonce section or due to
3347 linker script /DISCARD/, so we'll be discarding
3350 else if (p
->count
!= 0)
3352 srel
= elf_section_data (p
->sec
)->sreloc
;
3353 srel
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
3354 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
3355 info
->flags
|= DF_TEXTREL
;
3360 local_got
= elf_local_got_refcounts (ibfd
);
3364 symtab_hdr
= &elf_symtab_hdr (ibfd
);
3365 locsymcount
= symtab_hdr
->sh_info
;
3366 end_local_got
= local_got
+ locsymcount
;
3368 srel
= htab
->elf
.srelgot
;
3369 for (; local_got
< end_local_got
;
3370 ++local_got
, ++local_tls_type
, ++local_tlsdesc_gotent
)
3374 *local_got
= s
->size
;
3377 if (info
->shared
|| elf32_tic6x_using_dsbt (output_bfd
))
3379 srel
->size
+= sizeof (Elf32_External_Rela
);
3383 *local_got
= (bfd_vma
) -1;
3387 /* Allocate global sym .plt and .got entries, and space for global
3388 sym dynamic relocs. */
3389 elf_link_hash_traverse (&htab
->elf
, elf32_tic6x_allocate_dynrelocs
, info
);
3391 /* We now have determined the sizes of the various dynamic sections.
3392 Allocate memory for them. */
3394 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
3396 bfd_boolean strip_section
= TRUE
;
3398 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
3401 if (s
== htab
->dsbt
)
3402 s
->size
= 4 * htab
->params
.dsbt_size
;
3403 else if (s
== htab
->elf
.splt
3404 || s
== htab
->elf
.sgot
3405 || s
== htab
->elf
.sgotplt
3406 || s
== htab
->sdynbss
)
3408 /* Strip this section if we don't need it; see the
3410 /* We'd like to strip these sections if they aren't needed, but if
3411 we've exported dynamic symbols from them we must leave them.
3412 It's too late to tell BFD to get rid of the symbols. */
3414 if (htab
->elf
.hplt
!= NULL
)
3415 strip_section
= FALSE
;
3417 /* Round up the size of the PLT section to a multiple of 32. */
3418 if (s
== htab
->elf
.splt
&& s
->size
> 0)
3419 s
->size
= (s
->size
+ 31) & ~(bfd_vma
)31;
3421 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
3424 && s
!= htab
->elf
.srelplt
)
3427 /* We use the reloc_count field as a counter if we need
3428 to copy relocs into the output file. */
3433 /* It's not one of our sections, so don't allocate space. */
3439 /* If we don't need this section, strip it from the
3440 output file. This is mostly to handle .rel.bss and
3441 .rel.plt. We must create both sections in
3442 create_dynamic_sections, because they must be created
3443 before the linker maps input sections to output
3444 sections. The linker does that before
3445 adjust_dynamic_symbol is called, and it is that
3446 function which decides whether anything needs to go
3447 into these sections. */
3449 s
->flags
|= SEC_EXCLUDE
;
3453 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
3456 /* Allocate memory for the section contents. We use bfd_zalloc
3457 here in case unused entries are not reclaimed before the
3458 section's contents are written out. This should not happen,
3459 but this way if it does, we get a R_C6000_NONE reloc instead
3461 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
3462 if (s
->contents
== NULL
)
3466 if (htab
->elf
.dynamic_sections_created
)
3468 /* Add some entries to the .dynamic section. We fill in the
3469 values later, in elf32_tic6x_finish_dynamic_sections, but we
3470 must add the entries now so that we get the correct size for
3471 the .dynamic section. The DT_DEBUG entry is filled in by the
3472 dynamic linker and used by the debugger. */
3473 #define add_dynamic_entry(TAG, VAL) \
3474 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3476 if (info
->executable
)
3478 if (!add_dynamic_entry (DT_DEBUG
, 0))
3482 if (!add_dynamic_entry (DT_C6000_DSBT_BASE
, 0)
3483 || !add_dynamic_entry (DT_C6000_DSBT_SIZE
, htab
->params
.dsbt_size
)
3484 || !add_dynamic_entry (DT_C6000_DSBT_INDEX
,
3485 htab
->params
.dsbt_index
))
3488 if (htab
->elf
.splt
->size
!= 0)
3490 if (!add_dynamic_entry (DT_PLTGOT
, 0)
3491 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
3492 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
3493 || !add_dynamic_entry (DT_JMPREL
, 0))
3499 if (!add_dynamic_entry (DT_RELA
, 0)
3500 || !add_dynamic_entry (DT_RELASZ
, 0)
3501 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
3504 /* If any dynamic relocs apply to a read-only section,
3505 then we need a DT_TEXTREL entry. */
3506 if ((info
->flags
& DF_TEXTREL
) == 0)
3507 elf_link_hash_traverse (&htab
->elf
,
3508 elf32_tic6x_readonly_dynrelocs
, info
);
3510 if ((info
->flags
& DF_TEXTREL
) != 0)
3512 if (!add_dynamic_entry (DT_TEXTREL
, 0))
3517 #undef add_dynamic_entry
3522 /* This function is called after all the input files have been read,
3523 and the input sections have been assigned to output sections. */
3526 elf32_tic6x_always_size_sections (bfd
*output_bfd
, struct bfd_link_info
*info
)
3528 if (elf32_tic6x_using_dsbt (output_bfd
) && !info
->relocatable
)
3530 struct elf_link_hash_entry
*h
;
3532 /* Force a PT_GNU_STACK segment to be created. */
3533 if (! elf_tdata (output_bfd
)->stack_flags
)
3534 elf_tdata (output_bfd
)->stack_flags
= PF_R
| PF_W
| PF_X
;
3536 /* Define __stacksize if it's not defined yet. */
3537 h
= elf_link_hash_lookup (elf_hash_table (info
), "__stacksize",
3538 FALSE
, FALSE
, FALSE
);
3539 if (! h
|| h
->root
.type
!= bfd_link_hash_defined
3540 || h
->type
!= STT_OBJECT
3543 struct bfd_link_hash_entry
*bh
= NULL
;
3545 if (!(_bfd_generic_link_add_one_symbol
3546 (info
, output_bfd
, "__stacksize",
3547 BSF_GLOBAL
, bfd_abs_section_ptr
, DEFAULT_STACK_SIZE
,
3548 (const char *) NULL
, FALSE
,
3549 get_elf_backend_data (output_bfd
)->collect
, &bh
)))
3552 h
= (struct elf_link_hash_entry
*) bh
;
3554 h
->type
= STT_OBJECT
;
3561 elf32_tic6x_modify_program_headers (bfd
*output_bfd
,
3562 struct bfd_link_info
*info
)
3564 struct elf_obj_tdata
*tdata
= elf_tdata (output_bfd
);
3565 struct elf_segment_map
*m
;
3566 Elf_Internal_Phdr
*p
;
3568 /* objcopy and strip preserve what's already there using
3569 elf32_tic6x_copy_private_bfd_data (). */
3573 for (p
= tdata
->phdr
, m
= tdata
->segment_map
; m
!= NULL
; m
= m
->next
, p
++)
3574 if (m
->p_type
== PT_GNU_STACK
)
3579 struct elf_link_hash_entry
*h
;
3581 /* Obtain the pointer to the __stacksize symbol. */
3582 h
= elf_link_hash_lookup (elf_hash_table (info
), "__stacksize",
3583 FALSE
, FALSE
, FALSE
);
3586 while (h
->root
.type
== bfd_link_hash_indirect
3587 || h
->root
.type
== bfd_link_hash_warning
)
3588 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3589 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
3592 /* Set the header p_memsz from the symbol value. We
3593 intentionally ignore the symbol section. */
3594 if (h
&& h
->root
.type
== bfd_link_hash_defined
)
3595 p
->p_memsz
= h
->root
.u
.def
.value
;
3597 p
->p_memsz
= DEFAULT_STACK_SIZE
;
3606 elf32_tic6x_finish_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
3607 struct bfd_link_info
*info
)
3609 struct elf32_tic6x_link_hash_table
*htab
;
3613 htab
= elf32_tic6x_hash_table (info
);
3614 dynobj
= htab
->elf
.dynobj
;
3615 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
3617 if (elf_hash_table (info
)->dynamic_sections_created
)
3619 Elf32_External_Dyn
* dyncon
;
3620 Elf32_External_Dyn
* dynconend
;
3622 BFD_ASSERT (sdyn
!= NULL
);
3624 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
3625 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
3627 for (; dyncon
< dynconend
; dyncon
++)
3629 Elf_Internal_Dyn dyn
;
3632 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
3639 case DT_C6000_DSBT_BASE
:
3641 dyn
.d_un
.d_ptr
= (s
->output_section
->vma
+ s
->output_offset
);
3645 s
= htab
->elf
.sgotplt
;
3646 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
3650 s
= htab
->elf
.srelplt
;
3651 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
3655 s
= htab
->elf
.srelplt
;
3656 dyn
.d_un
.d_val
= s
->size
;
3659 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3662 /* Fill in the first entry in the procedure linkage table. */
3663 if (htab
->elf
.splt
&& htab
->elf
.splt
->size
> 0)
3665 bfd_vma got_offs
= (htab
->elf
.sgotplt
->output_section
->vma
3666 + htab
->elf
.sgotplt
->output_offset
3667 - htab
->dsbt
->output_section
->vma
3668 - htab
->dsbt
->output_offset
) / 4;
3670 /* ldw .D2T2 *+b14[$GOT(0)],b2 */
3671 bfd_put_32 (output_bfd
, got_offs
<< 8 | 0x0100006e,
3672 htab
->elf
.splt
->contents
);
3673 /* ldw .D2T2 *+b14[$GOT(4)],b1 */
3674 bfd_put_32 (output_bfd
, (got_offs
+ 1) << 8 | 0x0080006e,
3675 htab
->elf
.splt
->contents
+ 4);
3677 bfd_put_32 (output_bfd
, 0x00004000,
3678 htab
->elf
.splt
->contents
+ 8);
3680 bfd_put_32 (output_bfd
, 0x00080362,
3681 htab
->elf
.splt
->contents
+ 12);
3683 bfd_put_32 (output_bfd
, 0x00008000,
3684 htab
->elf
.splt
->contents
+ 16);
3686 elf_section_data (htab
->elf
.splt
->output_section
)
3687 ->this_hdr
.sh_entsize
= PLT_ENTRY_SIZE
;
3694 /* Return address for Ith PLT stub in section PLT, for relocation REL
3695 or (bfd_vma) -1 if it should not be included. */
3698 elf32_tic6x_plt_sym_val (bfd_vma i
, const asection
*plt
,
3699 const arelent
*rel ATTRIBUTE_UNUSED
)
3701 return plt
->vma
+ (i
+ 1) * PLT_ENTRY_SIZE
;
3705 elf32_tic6x_obj_attrs_arg_type (int tag
)
3707 if (tag
== Tag_ABI_compatibility
)
3708 return ATTR_TYPE_FLAG_INT_VAL
| ATTR_TYPE_FLAG_STR_VAL
;
3710 return ATTR_TYPE_FLAG_STR_VAL
;
3712 return ATTR_TYPE_FLAG_INT_VAL
;
3716 elf32_tic6x_obj_attrs_order (int num
)
3718 if (num
== LEAST_KNOWN_OBJ_ATTRIBUTE
)
3719 return Tag_ABI_conformance
;
3720 if ((num
- 1) < Tag_ABI_conformance
)
3726 elf32_tic6x_obj_attrs_handle_unknown (bfd
*abfd
, int tag
)
3728 if ((tag
& 127) < 64)
3731 (_("%B: error: unknown mandatory EABI object attribute %d"),
3733 bfd_set_error (bfd_error_bad_value
);
3739 (_("%B: warning: unknown EABI object attribute %d"),
3745 /* Merge the Tag_ISA attribute values ARCH1 and ARCH2
3746 and return the merged value. At present, all merges succeed, so no
3747 return value for errors is defined. */
3750 elf32_tic6x_merge_arch_attributes (int arch1
, int arch2
)
3752 int min_arch
, max_arch
;
3754 min_arch
= (arch1
< arch2
? arch1
: arch2
);
3755 max_arch
= (arch1
> arch2
? arch1
: arch2
);
3757 /* In most cases, the numerically greatest value is the correct
3758 merged value, but merging C64 and C67 results in C674X. */
3759 if ((min_arch
== C6XABI_Tag_ISA_C67X
3760 || min_arch
== C6XABI_Tag_ISA_C67XP
)
3761 && (max_arch
== C6XABI_Tag_ISA_C64X
3762 || max_arch
== C6XABI_Tag_ISA_C64XP
))
3763 return C6XABI_Tag_ISA_C674X
;
3768 /* Convert a Tag_ABI_array_object_alignment or
3769 Tag_ABI_array_object_align_expected tag value TAG to a
3770 corresponding alignment value; return the alignment, or -1 for an
3771 unknown tag value. */
3774 elf32_tic6x_tag_to_array_alignment (int tag
)
3792 /* Convert a Tag_ABI_array_object_alignment or
3793 Tag_ABI_array_object_align_expected alignment ALIGN to a
3794 corresponding tag value; return the tag value. */
3797 elf32_tic6x_array_alignment_to_tag (int align
)
3815 /* Merge attributes from IBFD and OBFD, returning TRUE if the merge
3816 succeeded, FALSE otherwise. */
3819 elf32_tic6x_merge_attributes (bfd
*ibfd
, bfd
*obfd
)
3821 bfd_boolean result
= TRUE
;
3822 obj_attribute
*in_attr
;
3823 obj_attribute
*out_attr
;
3825 int array_align_in
, array_align_out
, array_expect_in
, array_expect_out
;
3827 if (!elf_known_obj_attributes_proc (obfd
)[0].i
)
3829 /* This is the first object. Copy the attributes. */
3830 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
3832 out_attr
= elf_known_obj_attributes_proc (obfd
);
3834 /* Use the Tag_null value to indicate the attributes have been
3841 in_attr
= elf_known_obj_attributes_proc (ibfd
);
3842 out_attr
= elf_known_obj_attributes_proc (obfd
);
3844 /* No specification yet for handling of unknown attributes, so just
3845 ignore them and handle known ones. */
3847 if (out_attr
[Tag_ABI_stack_align_preserved
].i
3848 < in_attr
[Tag_ABI_stack_align_needed
].i
)
3851 (_("error: %B requires more stack alignment than %B preserves"),
3855 if (in_attr
[Tag_ABI_stack_align_preserved
].i
3856 < out_attr
[Tag_ABI_stack_align_needed
].i
)
3859 (_("error: %B requires more stack alignment than %B preserves"),
3864 array_align_in
= elf32_tic6x_tag_to_array_alignment
3865 (in_attr
[Tag_ABI_array_object_alignment
].i
);
3866 if (array_align_in
== -1)
3869 (_("error: unknown Tag_ABI_array_object_alignment value in %B"),
3873 array_align_out
= elf32_tic6x_tag_to_array_alignment
3874 (out_attr
[Tag_ABI_array_object_alignment
].i
);
3875 if (array_align_out
== -1)
3878 (_("error: unknown Tag_ABI_array_object_alignment value in %B"),
3882 array_expect_in
= elf32_tic6x_tag_to_array_alignment
3883 (in_attr
[Tag_ABI_array_object_align_expected
].i
);
3884 if (array_expect_in
== -1)
3887 (_("error: unknown Tag_ABI_array_object_align_expected value in %B"),
3891 array_expect_out
= elf32_tic6x_tag_to_array_alignment
3892 (out_attr
[Tag_ABI_array_object_align_expected
].i
);
3893 if (array_expect_out
== -1)
3896 (_("error: unknown Tag_ABI_array_object_align_expected value in %B"),
3901 if (array_align_out
< array_expect_in
)
3904 (_("error: %B requires more array alignment than %B preserves"),
3908 if (array_align_in
< array_expect_out
)
3911 (_("error: %B requires more array alignment than %B preserves"),
3916 for (i
= LEAST_KNOWN_OBJ_ATTRIBUTE
; i
< NUM_KNOWN_OBJ_ATTRIBUTES
; i
++)
3921 out_attr
[i
].i
= elf32_tic6x_merge_arch_attributes (in_attr
[i
].i
,
3925 case Tag_ABI_wchar_t
:
3926 if (out_attr
[i
].i
== 0)
3927 out_attr
[i
].i
= in_attr
[i
].i
;
3928 if (out_attr
[i
].i
!= 0
3929 && in_attr
[i
].i
!= 0
3930 && out_attr
[i
].i
!= in_attr
[i
].i
)
3933 (_("warning: %B and %B differ in wchar_t size"), obfd
, ibfd
);
3937 case Tag_ABI_stack_align_needed
:
3938 if (out_attr
[i
].i
< in_attr
[i
].i
)
3939 out_attr
[i
].i
= in_attr
[i
].i
;
3942 case Tag_ABI_stack_align_preserved
:
3943 if (out_attr
[i
].i
> in_attr
[i
].i
)
3944 out_attr
[i
].i
= in_attr
[i
].i
;
3948 if (out_attr
[i
].i
!= in_attr
[i
].i
)
3951 (_("warning: %B and %B differ in whether code is "
3952 "compiled for DSBT"),
3959 if (out_attr
[i
].i
> in_attr
[i
].i
)
3960 out_attr
[i
].i
= in_attr
[i
].i
;
3963 case Tag_ABI_array_object_alignment
:
3964 if (array_align_out
!= -1
3965 && array_align_in
!= -1
3966 && array_align_out
> array_align_in
)
3968 = elf32_tic6x_array_alignment_to_tag (array_align_in
);
3971 case Tag_ABI_array_object_align_expected
:
3972 if (array_expect_out
!= -1
3973 && array_expect_in
!= -1
3974 && array_expect_out
< array_expect_in
)
3976 = elf32_tic6x_array_alignment_to_tag (array_expect_in
);
3979 case Tag_ABI_conformance
:
3980 /* Merging for this attribute is not specified. As on ARM,
3981 treat a missing attribute as no claim to conform and only
3982 merge identical values. */
3983 if (out_attr
[i
].s
== NULL
3984 || in_attr
[i
].s
== NULL
3985 || strcmp (out_attr
[i
].s
,
3987 out_attr
[i
].s
= NULL
;
3990 case Tag_ABI_compatibility
:
3991 /* Merged in _bfd_elf_merge_object_attributes. */
3996 = result
&& _bfd_elf_merge_unknown_attribute_low (ibfd
, obfd
, i
);
4000 if (in_attr
[i
].type
&& !out_attr
[i
].type
)
4001 out_attr
[i
].type
= in_attr
[i
].type
;
4004 /* Merge Tag_ABI_compatibility attributes and any common GNU ones. */
4005 if (!_bfd_elf_merge_object_attributes (ibfd
, obfd
))
4008 result
&= _bfd_elf_merge_unknown_attribute_list (ibfd
, obfd
);
4014 elf32_tic6x_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
4016 if (!_bfd_generic_verify_endian_match (ibfd
, obfd
))
4019 if (!elf32_tic6x_merge_attributes (ibfd
, obfd
))
4026 elf32_tic6x_copy_private_data (bfd
* ibfd
, bfd
* obfd
)
4028 _bfd_elf_copy_private_bfd_data (ibfd
, obfd
);
4030 if (! is_tic6x_elf (ibfd
) || ! is_tic6x_elf (obfd
))
4033 /* Copy the stack size. */
4034 if (elf_tdata (ibfd
)->phdr
&& elf_tdata (obfd
)->phdr
4035 && elf32_tic6x_using_dsbt (ibfd
) && elf32_tic6x_using_dsbt (obfd
))
4039 for (i
= 0; i
< elf_elfheader (ibfd
)->e_phnum
; i
++)
4040 if (elf_tdata (ibfd
)->phdr
[i
].p_type
== PT_GNU_STACK
)
4042 Elf_Internal_Phdr
*iphdr
= &elf_tdata (ibfd
)->phdr
[i
];
4044 for (i
= 0; i
< elf_elfheader (obfd
)->e_phnum
; i
++)
4045 if (elf_tdata (obfd
)->phdr
[i
].p_type
== PT_GNU_STACK
)
4047 memcpy (&elf_tdata (obfd
)->phdr
[i
], iphdr
, sizeof (*iphdr
));
4049 /* Rewrite the phdrs, since we're only called after they
4050 were first written. */
4052 (bfd_signed_vma
) get_elf_backend_data (obfd
)
4053 ->s
->sizeof_ehdr
, SEEK_SET
) != 0
4054 || get_elf_backend_data (obfd
)->s
4055 ->write_out_phdrs (obfd
, elf_tdata (obfd
)->phdr
,
4056 elf_elfheader (obfd
)->e_phnum
) != 0)
4068 /* Add a new unwind edit to the list described by HEAD, TAIL. If TINDEX is zero,
4069 adds the edit to the start of the list. (The list must be built in order of
4070 ascending TINDEX: the function's callers are primarily responsible for
4071 maintaining that condition). */
4074 elf32_tic6x_add_unwind_table_edit (tic6x_unwind_table_edit
**head
,
4075 tic6x_unwind_table_edit
**tail
,
4076 tic6x_unwind_edit_type type
,
4077 asection
*linked_section
,
4078 unsigned int tindex
)
4080 tic6x_unwind_table_edit
*new_edit
= (tic6x_unwind_table_edit
*)
4081 xmalloc (sizeof (tic6x_unwind_table_edit
));
4083 new_edit
->type
= type
;
4084 new_edit
->linked_section
= linked_section
;
4085 new_edit
->index
= tindex
;
4089 new_edit
->next
= NULL
;
4092 (*tail
)->next
= new_edit
;
4101 new_edit
->next
= *head
;
4110 static _tic6x_elf_section_data
*
4111 get_tic6x_elf_section_data (asection
* sec
)
4113 if (sec
&& sec
->owner
&& is_tic6x_elf (sec
->owner
))
4114 return elf32_tic6x_section_data (sec
);
4120 /* Increase the size of EXIDX_SEC by ADJUST bytes. ADJUST must be negative. */
4122 elf32_tic6x_adjust_exidx_size (asection
*exidx_sec
, int adjust
)
4126 if (!exidx_sec
->rawsize
)
4127 exidx_sec
->rawsize
= exidx_sec
->size
;
4129 bfd_set_section_size (exidx_sec
->owner
, exidx_sec
, exidx_sec
->size
+ adjust
);
4130 out_sec
= exidx_sec
->output_section
;
4131 /* Adjust size of output section. */
4132 bfd_set_section_size (out_sec
->owner
, out_sec
, out_sec
->size
+adjust
);
4135 /* Insert an EXIDX_CANTUNWIND marker at the end of a section. */
4137 elf32_tic6x_insert_cantunwind_after (asection
*text_sec
, asection
*exidx_sec
)
4139 struct _tic6x_elf_section_data
*exidx_data
;
4141 exidx_data
= get_tic6x_elf_section_data (exidx_sec
);
4142 elf32_tic6x_add_unwind_table_edit (
4143 &exidx_data
->u
.exidx
.unwind_edit_list
,
4144 &exidx_data
->u
.exidx
.unwind_edit_tail
,
4145 INSERT_EXIDX_CANTUNWIND_AT_END
, text_sec
, UINT_MAX
);
4147 elf32_tic6x_adjust_exidx_size (exidx_sec
, 8);
4150 /* Scan .cx6abi.exidx tables, and create a list describing edits which
4151 should be made to those tables, such that:
4153 1. Regions without unwind data are marked with EXIDX_CANTUNWIND entries.
4154 2. Duplicate entries are merged together (EXIDX_CANTUNWIND, or unwind
4155 codes which have been inlined into the index).
4157 If MERGE_EXIDX_ENTRIES is false, duplicate entries are not merged.
4159 The edits are applied when the tables are written
4160 (in elf32_tic6x_write_section).
4164 elf32_tic6x_fix_exidx_coverage (asection
**text_section_order
,
4165 unsigned int num_text_sections
,
4166 struct bfd_link_info
*info
,
4167 bfd_boolean merge_exidx_entries
)
4170 unsigned int last_second_word
= 0, i
;
4171 asection
*last_exidx_sec
= NULL
;
4172 asection
*last_text_sec
= NULL
;
4173 int last_unwind_type
= -1;
4175 /* Walk over all EXIDX sections, and create backlinks from the corrsponding
4177 for (inp
= info
->input_bfds
; inp
!= NULL
; inp
= inp
->link_next
)
4181 for (sec
= inp
->sections
; sec
!= NULL
; sec
= sec
->next
)
4183 struct bfd_elf_section_data
*elf_sec
= elf_section_data (sec
);
4184 Elf_Internal_Shdr
*hdr
= &elf_sec
->this_hdr
;
4186 if (!hdr
|| hdr
->sh_type
!= SHT_C6000_UNWIND
)
4189 if (elf_sec
->linked_to
)
4191 Elf_Internal_Shdr
*linked_hdr
4192 = &elf_section_data (elf_sec
->linked_to
)->this_hdr
;
4193 struct _tic6x_elf_section_data
*linked_sec_tic6x_data
4194 = get_tic6x_elf_section_data (linked_hdr
->bfd_section
);
4196 if (linked_sec_tic6x_data
== NULL
)
4199 /* Link this .c6xabi.exidx section back from the
4200 text section it describes. */
4201 linked_sec_tic6x_data
->u
.text
.tic6x_exidx_sec
= sec
;
4206 /* Walk all text sections in order of increasing VMA. Eilminate duplicate
4207 index table entries (EXIDX_CANTUNWIND and inlined unwind opcodes),
4208 and add EXIDX_CANTUNWIND entries for sections with no unwind table data. */
4210 for (i
= 0; i
< num_text_sections
; i
++)
4212 asection
*sec
= text_section_order
[i
];
4213 asection
*exidx_sec
;
4214 struct _tic6x_elf_section_data
*tic6x_data
4215 = get_tic6x_elf_section_data (sec
);
4216 struct _tic6x_elf_section_data
*exidx_data
;
4217 bfd_byte
*contents
= NULL
;
4218 int deleted_exidx_bytes
= 0;
4220 tic6x_unwind_table_edit
*unwind_edit_head
= NULL
;
4221 tic6x_unwind_table_edit
*unwind_edit_tail
= NULL
;
4222 Elf_Internal_Shdr
*hdr
;
4225 if (tic6x_data
== NULL
)
4228 exidx_sec
= tic6x_data
->u
.text
.tic6x_exidx_sec
;
4229 if (exidx_sec
== NULL
)
4231 /* Section has no unwind data. */
4232 if (last_unwind_type
== 0 || !last_exidx_sec
)
4235 /* Ignore zero sized sections. */
4239 elf32_tic6x_insert_cantunwind_after (last_text_sec
, last_exidx_sec
);
4240 last_unwind_type
= 0;
4244 /* Skip /DISCARD/ sections. */
4245 if (bfd_is_abs_section (exidx_sec
->output_section
))
4248 hdr
= &elf_section_data (exidx_sec
)->this_hdr
;
4249 if (hdr
->sh_type
!= SHT_C6000_UNWIND
)
4252 exidx_data
= get_tic6x_elf_section_data (exidx_sec
);
4253 if (exidx_data
== NULL
)
4256 ibfd
= exidx_sec
->owner
;
4258 if (hdr
->contents
!= NULL
)
4259 contents
= hdr
->contents
;
4260 else if (! bfd_malloc_and_get_section (ibfd
, exidx_sec
, &contents
))
4264 for (j
= 0; j
< hdr
->sh_size
; j
+= 8)
4266 unsigned int second_word
= bfd_get_32 (ibfd
, contents
+ j
+ 4);
4270 /* An EXIDX_CANTUNWIND entry. */
4271 if (second_word
== 1)
4273 if (last_unwind_type
== 0)
4277 /* Inlined unwinding data. Merge if equal to previous. */
4278 else if ((second_word
& 0x80000000) != 0)
4280 if (merge_exidx_entries
4281 && last_second_word
== second_word
4282 && last_unwind_type
== 1)
4285 last_second_word
= second_word
;
4287 /* Normal table entry. In theory we could merge these too,
4288 but duplicate entries are likely to be much less common. */
4294 elf32_tic6x_add_unwind_table_edit (&unwind_edit_head
,
4295 &unwind_edit_tail
, DELETE_EXIDX_ENTRY
, NULL
, j
/ 8);
4297 deleted_exidx_bytes
+= 8;
4300 last_unwind_type
= unwind_type
;
4303 /* Free contents if we allocated it ourselves. */
4304 if (contents
!= hdr
->contents
)
4307 /* Record edits to be applied later (in elf32_tic6x_write_section). */
4308 exidx_data
->u
.exidx
.unwind_edit_list
= unwind_edit_head
;
4309 exidx_data
->u
.exidx
.unwind_edit_tail
= unwind_edit_tail
;
4311 if (deleted_exidx_bytes
> 0)
4312 elf32_tic6x_adjust_exidx_size (exidx_sec
, -deleted_exidx_bytes
);
4314 last_exidx_sec
= exidx_sec
;
4315 last_text_sec
= sec
;
4318 /* Add terminating CANTUNWIND entry. */
4319 if (last_exidx_sec
&& last_unwind_type
!= 0)
4320 elf32_tic6x_insert_cantunwind_after (last_text_sec
, last_exidx_sec
);
4325 /* Add ADDEND to lower 31 bits of VAL, leaving other bits unmodified. */
4327 static unsigned long
4328 elf32_tic6x_add_low31 (unsigned long val
, bfd_vma addend
)
4330 return (val
& ~0x7ffffffful
) | ((val
+ addend
) & 0x7ffffffful
);
4333 /* Copy an .c6xabi.exidx table entry, adding OFFSET to (applied) PREL31
4334 relocations. OFFSET is in bytes, and will be scaled before encoding. */
4338 elf32_tic6x_copy_exidx_entry (bfd
*output_bfd
, bfd_byte
*to
, bfd_byte
*from
,
4341 unsigned long first_word
= bfd_get_32 (output_bfd
, from
);
4342 unsigned long second_word
= bfd_get_32 (output_bfd
, from
+ 4);
4345 /* High bit of first word is supposed to be zero. */
4346 if ((first_word
& 0x80000000ul
) == 0)
4347 first_word
= elf32_tic6x_add_low31 (first_word
, offset
);
4349 /* If the high bit of the first word is clear, and the bit pattern is not 0x1
4350 (EXIDX_CANTUNWIND), this is an offset to an .c6xabi.extab entry. */
4351 if ((second_word
!= 0x1) && ((second_word
& 0x80000000ul
) == 0))
4352 second_word
= elf32_tic6x_add_low31 (second_word
, offset
);
4354 bfd_put_32 (output_bfd
, first_word
, to
);
4355 bfd_put_32 (output_bfd
, second_word
, to
+ 4);
4358 /* Do the actual mangling of exception index tables. */
4361 elf32_tic6x_write_section (bfd
*output_bfd
,
4362 struct bfd_link_info
*link_info
,
4366 _tic6x_elf_section_data
*tic6x_data
;
4367 struct elf32_tic6x_link_hash_table
*globals
4368 = elf32_tic6x_hash_table (link_info
);
4369 bfd_vma offset
= sec
->output_section
->vma
+ sec
->output_offset
;
4371 if (globals
== NULL
)
4374 /* If this section has not been allocated an _tic6x_elf_section_data
4375 structure then we cannot record anything. */
4376 tic6x_data
= get_tic6x_elf_section_data (sec
);
4377 if (tic6x_data
== NULL
)
4380 if (tic6x_data
->elf
.this_hdr
.sh_type
!= SHT_C6000_UNWIND
)
4383 tic6x_unwind_table_edit
*edit_node
4384 = tic6x_data
->u
.exidx
.unwind_edit_list
;
4385 /* Now, sec->size is the size of the section we will write. The original
4386 size (before we merged duplicate entries and inserted EXIDX_CANTUNWIND
4387 markers) was sec->rawsize. (This isn't the case if we perform no
4388 edits, then rawsize will be zero and we should use size). */
4389 bfd_byte
*edited_contents
= (bfd_byte
*) bfd_malloc (sec
->size
);
4390 unsigned int input_size
= sec
->rawsize
? sec
->rawsize
: sec
->size
;
4391 unsigned int in_index
, out_index
;
4392 bfd_vma add_to_offsets
= 0;
4394 for (in_index
= 0, out_index
= 0; in_index
* 8 < input_size
|| edit_node
;)
4398 unsigned int edit_index
= edit_node
->index
;
4400 if (in_index
< edit_index
&& in_index
* 8 < input_size
)
4402 elf32_tic6x_copy_exidx_entry (output_bfd
,
4403 edited_contents
+ out_index
* 8,
4404 contents
+ in_index
* 8, add_to_offsets
);
4408 else if (in_index
== edit_index
4409 || (in_index
* 8 >= input_size
4410 && edit_index
== UINT_MAX
))
4412 switch (edit_node
->type
)
4414 case DELETE_EXIDX_ENTRY
:
4416 add_to_offsets
+= 8;
4419 case INSERT_EXIDX_CANTUNWIND_AT_END
:
4421 asection
*text_sec
= edit_node
->linked_section
;
4422 bfd_vma text_offset
= text_sec
->output_section
->vma
4423 + text_sec
->output_offset
4425 bfd_vma exidx_offset
= offset
+ out_index
* 8;
4426 unsigned long prel31_offset
;
4428 /* Note: this is meant to be equivalent to an
4429 R_C6000_PREL31 relocation. These synthetic
4430 EXIDX_CANTUNWIND markers are not relocated by the
4431 usual BFD method. */
4432 prel31_offset
= ((text_offset
- exidx_offset
) >> 1)
4435 /* First address we can't unwind. */
4436 bfd_put_32 (output_bfd
, prel31_offset
,
4437 &edited_contents
[out_index
* 8]);
4439 /* Code for EXIDX_CANTUNWIND. */
4440 bfd_put_32 (output_bfd
, 0x1,
4441 &edited_contents
[out_index
* 8 + 4]);
4444 add_to_offsets
-= 8;
4449 edit_node
= edit_node
->next
;
4454 /* No more edits, copy remaining entries verbatim. */
4455 elf32_tic6x_copy_exidx_entry (output_bfd
,
4456 edited_contents
+ out_index
* 8,
4457 contents
+ in_index
* 8, add_to_offsets
);
4463 if (!(sec
->flags
& SEC_EXCLUDE
) && !(sec
->flags
& SEC_NEVER_LOAD
))
4464 bfd_set_section_contents (output_bfd
, sec
->output_section
,
4466 (file_ptr
) sec
->output_offset
, sec
->size
);
4472 elf32_tic6x_set_osabi (bfd
*abfd
, struct bfd_link_info
*link_info
)
4474 if (link_info
== NULL
|| link_info
->relocatable
)
4476 _bfd_elf_set_osabi (abfd
, link_info
);
4479 #define TARGET_LITTLE_SYM bfd_elf32_tic6x_le_vec
4480 #define TARGET_LITTLE_NAME "elf32-tic6x-le"
4481 #define TARGET_BIG_SYM bfd_elf32_tic6x_be_vec
4482 #define TARGET_BIG_NAME "elf32-tic6x-be"
4483 #define ELF_ARCH bfd_arch_tic6x
4484 #define ELF_TARGET_ID TIC6X_ELF_DATA
4485 #define ELF_MACHINE_CODE EM_TI_C6000
4486 #define ELF_MAXPAGESIZE 0x1000
4487 #define bfd_elf32_bfd_reloc_type_lookup elf32_tic6x_reloc_type_lookup
4488 #define bfd_elf32_bfd_reloc_name_lookup elf32_tic6x_reloc_name_lookup
4489 #define bfd_elf32_bfd_copy_private_bfd_data elf32_tic6x_copy_private_data
4490 #define bfd_elf32_bfd_merge_private_bfd_data elf32_tic6x_merge_private_bfd_data
4491 #define bfd_elf32_mkobject elf32_tic6x_mkobject
4492 #define bfd_elf32_bfd_link_hash_table_create elf32_tic6x_link_hash_table_create
4493 #define bfd_elf32_bfd_link_hash_table_free elf32_tic6x_link_hash_table_free
4494 #define bfd_elf32_new_section_hook elf32_tic6x_new_section_hook
4495 #define elf_backend_can_gc_sections 1
4496 #define elf_backend_default_use_rela_p 1
4497 #define elf_backend_may_use_rel_p 1
4498 #define elf_backend_may_use_rela_p 1
4499 #define elf_backend_obj_attrs_arg_type elf32_tic6x_obj_attrs_arg_type
4500 #define elf_backend_obj_attrs_handle_unknown elf32_tic6x_obj_attrs_handle_unknown
4501 #define elf_backend_obj_attrs_order elf32_tic6x_obj_attrs_order
4502 #define elf_backend_obj_attrs_section ".c6xabi.attributes"
4503 #define elf_backend_obj_attrs_section_type SHT_C6000_ATTRIBUTES
4504 #define elf_backend_obj_attrs_vendor "c6xabi"
4505 #define elf_backend_can_refcount 1
4506 #define elf_backend_want_got_plt 1
4507 #define elf_backend_want_dynbss 1
4508 #define elf_backend_plt_readonly 1
4509 #define elf_backend_rela_normal 1
4510 #define elf_backend_got_header_size 8
4511 #define elf_backend_fake_sections elf32_tic6x_fake_sections
4512 #define elf_backend_gc_sweep_hook elf32_tic6x_gc_sweep_hook
4513 #define elf_backend_gc_mark_extra_sections elf32_tic6x_gc_mark_extra_sections
4514 #define elf_backend_modify_program_headers \
4515 elf32_tic6x_modify_program_headers
4516 #define elf_backend_create_dynamic_sections \
4517 elf32_tic6x_create_dynamic_sections
4518 #define elf_backend_adjust_dynamic_symbol \
4519 elf32_tic6x_adjust_dynamic_symbol
4520 #define elf_backend_check_relocs elf32_tic6x_check_relocs
4521 #define elf_backend_add_symbol_hook elf32_tic6x_add_symbol_hook
4522 #define elf_backend_symbol_processing elf32_tic6x_symbol_processing
4523 #define elf_backend_link_output_symbol_hook \
4524 elf32_tic6x_link_output_symbol_hook
4525 #define elf_backend_section_from_bfd_section \
4526 elf32_tic6x_section_from_bfd_section
4527 #define elf_backend_relocate_section elf32_tic6x_relocate_section
4528 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
4529 #define elf_backend_finish_dynamic_symbol \
4530 elf32_tic6x_finish_dynamic_symbol
4531 #define elf_backend_always_size_sections \
4532 elf32_tic6x_always_size_sections
4533 #define elf_backend_size_dynamic_sections \
4534 elf32_tic6x_size_dynamic_sections
4535 #define elf_backend_finish_dynamic_sections \
4536 elf32_tic6x_finish_dynamic_sections
4537 #define bfd_elf32_bfd_final_link \
4538 elf32_tic6x_final_link
4539 #define elf_backend_write_section elf32_tic6x_write_section
4540 #define elf_info_to_howto elf32_tic6x_info_to_howto
4541 #define elf_info_to_howto_rel elf32_tic6x_info_to_howto_rel
4543 #undef elf_backend_omit_section_dynsym
4544 #define elf_backend_omit_section_dynsym elf32_tic6x_link_omit_section_dynsym
4545 #define elf_backend_plt_sym_val elf32_tic6x_plt_sym_val
4547 #include "elf32-target.h"
4550 #define elf32_bed elf32_tic6x_linux_bed
4552 #undef TARGET_LITTLE_SYM
4553 #define TARGET_LITTLE_SYM bfd_elf32_tic6x_linux_le_vec
4554 #undef TARGET_LITTLE_NAME
4555 #define TARGET_LITTLE_NAME "elf32-tic6x-linux-le"
4556 #undef TARGET_BIG_SYM
4557 #define TARGET_BIG_SYM bfd_elf32_tic6x_linux_be_vec
4558 #undef TARGET_BIG_NAME
4559 #define TARGET_BIG_NAME "elf32-tic6x-linux-be"
4561 #define ELF_OSABI ELFOSABI_C6000_LINUX
4563 #undef elf_backend_post_process_headers
4564 #define elf_backend_post_process_headers elf32_tic6x_set_osabi
4566 #include "elf32-target.h"
4569 #define elf32_bed elf32_tic6x_elf_bed
4571 #undef TARGET_LITTLE_SYM
4572 #define TARGET_LITTLE_SYM bfd_elf32_tic6x_elf_le_vec
4573 #undef TARGET_LITTLE_NAME
4574 #define TARGET_LITTLE_NAME "elf32-tic6x-elf-le"
4575 #undef TARGET_BIG_SYM
4576 #define TARGET_BIG_SYM bfd_elf32_tic6x_elf_be_vec
4577 #undef TARGET_BIG_NAME
4578 #define TARGET_BIG_NAME "elf32-tic6x-elf-be"
4580 #define ELF_OSABI ELFOSABI_C6000_ELFABI
4582 #undef elf_backend_post_process_headers
4583 #define elf_backend_post_process_headers elf32_tic6x_set_osabi
4585 #include "elf32-target.h"