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 */
755 HOWTO (R_C6000_ALIGN
, /* type */
757 0, /* size (0 = byte, 1 = short, 2 = long) */
759 FALSE
, /* pc_relative */
761 complain_overflow_dont
,/* complain_on_overflow */
762 bfd_elf_generic_reloc
, /* special_function */
763 "R_C6000_ALIGN", /* name */
764 FALSE
, /* partial_inplace */
767 FALSE
), /* pcrel_offset */
768 HOWTO (R_C6000_FPHEAD
, /* type */
770 0, /* size (0 = byte, 1 = short, 2 = long) */
772 FALSE
, /* pc_relative */
774 complain_overflow_dont
,/* complain_on_overflow */
775 bfd_elf_generic_reloc
, /* special_function */
776 "R_C6000_FPHEAD", /* name */
777 FALSE
, /* partial_inplace */
780 FALSE
), /* pcrel_offset */
781 HOWTO (R_C6000_NOCMP
, /* type */
783 0, /* size (0 = byte, 1 = short, 2 = long) */
785 FALSE
, /* pc_relative */
787 complain_overflow_dont
,/* complain_on_overflow */
788 bfd_elf_generic_reloc
, /* special_function */
789 "R_C6000_NOCMP", /* name */
790 FALSE
, /* partial_inplace */
793 FALSE
) /* pcrel_offset */
796 static reloc_howto_type elf32_tic6x_howto_table_rel
[] =
798 HOWTO (R_C6000_NONE
, /* type */
800 0, /* size (0 = byte, 1 = short, 2 = long) */
802 FALSE
, /* pc_relative */
804 complain_overflow_dont
,/* complain_on_overflow */
805 bfd_elf_generic_reloc
, /* special_function */
806 "R_C6000_NONE", /* name */
807 TRUE
, /* partial_inplace */
810 FALSE
), /* pcrel_offset */
811 HOWTO (R_C6000_ABS32
, /* type */
813 2, /* size (0 = byte, 1 = short, 2 = long) */
815 FALSE
, /* pc_relative */
817 complain_overflow_dont
,/* complain_on_overflow */
818 bfd_elf_generic_reloc
, /* special_function */
819 "R_C6000_ABS32", /* name */
820 TRUE
, /* partial_inplace */
821 0xffffffff, /* src_mask */
822 0xffffffff, /* dst_mask */
823 FALSE
), /* pcrel_offset */
824 HOWTO (R_C6000_ABS16
, /* type */
826 1, /* size (0 = byte, 1 = short, 2 = long) */
828 FALSE
, /* pc_relative */
830 complain_overflow_bitfield
,/* complain_on_overflow */
831 bfd_elf_generic_reloc
, /* special_function */
832 "R_C6000_ABS16", /* name */
833 TRUE
, /* partial_inplace */
834 0x0000ffff, /* src_mask */
835 0x0000ffff, /* dst_mask */
836 FALSE
), /* pcrel_offset */
837 HOWTO (R_C6000_ABS8
, /* type */
839 0, /* size (0 = byte, 1 = short, 2 = long) */
841 FALSE
, /* pc_relative */
843 complain_overflow_bitfield
,/* complain_on_overflow */
844 bfd_elf_generic_reloc
, /* special_function */
845 "R_C6000_ABS8", /* name */
846 TRUE
, /* partial_inplace */
847 0x000000ff, /* src_mask */
848 0x000000ff, /* dst_mask */
849 FALSE
), /* pcrel_offset */
850 HOWTO (R_C6000_PCR_S21
, /* type */
852 2, /* size (0 = byte, 1 = short, 2 = long) */
854 TRUE
, /* pc_relative */
856 complain_overflow_signed
,/* complain_on_overflow */
857 bfd_elf_generic_reloc
, /* special_function */
858 "R_C6000_PCR_S21", /* name */
859 TRUE
, /* partial_inplace */
860 0x0fffff80, /* src_mask */
861 0x0fffff80, /* dst_mask */
862 TRUE
), /* pcrel_offset */
863 HOWTO (R_C6000_PCR_S12
, /* type */
865 2, /* size (0 = byte, 1 = short, 2 = long) */
867 TRUE
, /* pc_relative */
869 complain_overflow_signed
,/* complain_on_overflow */
870 bfd_elf_generic_reloc
, /* special_function */
871 "R_C6000_PCR_S12", /* name */
872 TRUE
, /* partial_inplace */
873 0x0fff0000, /* src_mask */
874 0x0fff0000, /* dst_mask */
875 TRUE
), /* pcrel_offset */
876 HOWTO (R_C6000_PCR_S10
, /* type */
878 2, /* size (0 = byte, 1 = short, 2 = long) */
880 TRUE
, /* pc_relative */
882 complain_overflow_signed
,/* complain_on_overflow */
883 bfd_elf_generic_reloc
, /* special_function */
884 "R_C6000_PCR_S10", /* name */
885 TRUE
, /* partial_inplace */
886 0x007fe000, /* src_mask */
887 0x007fe000, /* dst_mask */
888 TRUE
), /* pcrel_offset */
889 HOWTO (R_C6000_PCR_S7
, /* type */
891 2, /* size (0 = byte, 1 = short, 2 = long) */
893 TRUE
, /* pc_relative */
895 complain_overflow_signed
,/* complain_on_overflow */
896 bfd_elf_generic_reloc
, /* special_function */
897 "R_C6000_PCR_S7", /* name */
898 TRUE
, /* partial_inplace */
899 0x007f0000, /* src_mask */
900 0x007f0000, /* dst_mask */
901 TRUE
), /* pcrel_offset */
902 HOWTO (R_C6000_ABS_S16
, /* type */
904 2, /* size (0 = byte, 1 = short, 2 = long) */
906 FALSE
, /* pc_relative */
908 complain_overflow_signed
,/* complain_on_overflow */
909 bfd_elf_generic_reloc
, /* special_function */
910 "R_C6000_ABS_S16", /* name */
911 TRUE
, /* partial_inplace */
912 0x007fff80, /* src_mask */
913 0x007fff80, /* dst_mask */
914 FALSE
), /* pcrel_offset */
915 HOWTO (R_C6000_ABS_L16
, /* type */
917 2, /* size (0 = byte, 1 = short, 2 = long) */
919 FALSE
, /* pc_relative */
921 complain_overflow_dont
,/* complain_on_overflow */
922 bfd_elf_generic_reloc
, /* special_function */
923 "R_C6000_ABS_L16", /* name */
924 TRUE
, /* partial_inplace */
925 0x007fff80, /* src_mask */
926 0x007fff80, /* dst_mask */
927 FALSE
), /* pcrel_offset */
928 EMPTY_HOWTO (R_C6000_ABS_H16
),
929 HOWTO (R_C6000_SBR_U15_B
, /* type */
931 2, /* size (0 = byte, 1 = short, 2 = long) */
933 FALSE
, /* pc_relative */
935 complain_overflow_unsigned
,/* complain_on_overflow */
936 bfd_elf_generic_reloc
, /* special_function */
937 "R_C6000_SBR_U15_B", /* name */
938 TRUE
, /* partial_inplace */
939 0x007fff00, /* src_mask */
940 0x007fff00, /* dst_mask */
941 FALSE
), /* pcrel_offset */
942 HOWTO (R_C6000_SBR_U15_H
, /* type */
944 2, /* size (0 = byte, 1 = short, 2 = long) */
946 FALSE
, /* pc_relative */
948 complain_overflow_unsigned
,/* complain_on_overflow */
949 bfd_elf_generic_reloc
, /* special_function */
950 "R_C6000_SBR_U15_H", /* name */
951 TRUE
, /* partial_inplace */
952 0x007fff00, /* src_mask */
953 0x007fff00, /* dst_mask */
954 FALSE
), /* pcrel_offset */
955 HOWTO (R_C6000_SBR_U15_W
, /* type */
957 2, /* size (0 = byte, 1 = short, 2 = long) */
959 FALSE
, /* pc_relative */
961 complain_overflow_unsigned
,/* complain_on_overflow */
962 bfd_elf_generic_reloc
, /* special_function */
963 "R_C6000_SBR_U15_W", /* name */
964 TRUE
, /* partial_inplace */
965 0x007fff00, /* src_mask */
966 0x007fff00, /* dst_mask */
967 FALSE
), /* pcrel_offset */
968 HOWTO (R_C6000_SBR_S16
, /* type */
970 2, /* size (0 = byte, 1 = short, 2 = long) */
972 FALSE
, /* pc_relative */
974 complain_overflow_signed
,/* complain_on_overflow */
975 bfd_elf_generic_reloc
, /* special_function */
976 "R_C6000_SBR_S16", /* name */
977 TRUE
, /* partial_inplace */
978 0x007fff80, /* src_mask */
979 0x007fff80, /* dst_mask */
980 FALSE
), /* pcrel_offset */
981 HOWTO (R_C6000_SBR_L16_B
, /* type */
983 2, /* size (0 = byte, 1 = short, 2 = long) */
985 FALSE
, /* pc_relative */
987 complain_overflow_dont
,/* complain_on_overflow */
988 bfd_elf_generic_reloc
, /* special_function */
989 "R_C6000_SBR_L16_B", /* name */
990 TRUE
, /* partial_inplace */
991 0x007fff80, /* src_mask */
992 0x007fff80, /* dst_mask */
993 FALSE
), /* pcrel_offset */
994 HOWTO (R_C6000_SBR_L16_H
, /* type */
996 2, /* size (0 = byte, 1 = short, 2 = long) */
998 FALSE
, /* pc_relative */
1000 complain_overflow_dont
,/* complain_on_overflow */
1001 bfd_elf_generic_reloc
, /* special_function */
1002 "R_C6000_SBR_L16_H", /* name */
1003 TRUE
, /* partial_inplace */
1004 0x007fff80, /* src_mask */
1005 0x007fff80, /* dst_mask */
1006 FALSE
), /* pcrel_offset */
1007 HOWTO (R_C6000_SBR_L16_W
, /* type */
1009 2, /* size (0 = byte, 1 = short, 2 = long) */
1011 FALSE
, /* pc_relative */
1013 complain_overflow_dont
,/* complain_on_overflow */
1014 bfd_elf_generic_reloc
, /* special_function */
1015 "R_C6000_SBR_L16_W", /* name */
1016 TRUE
, /* partial_inplace */
1017 0x007fff80, /* src_mask */
1018 0x007fff80, /* dst_mask */
1019 FALSE
), /* pcrel_offset */
1020 EMPTY_HOWTO (R_C6000_SBR_H16_B
),
1021 EMPTY_HOWTO (R_C6000_SBR_H16_H
),
1022 EMPTY_HOWTO (R_C6000_SBR_H16_W
),
1023 HOWTO (R_C6000_SBR_GOT_U15_W
, /* type */
1025 2, /* size (0 = byte, 1 = short, 2 = long) */
1027 FALSE
, /* pc_relative */
1029 complain_overflow_unsigned
,/* complain_on_overflow */
1030 bfd_elf_generic_reloc
, /* special_function */
1031 "R_C6000_SBR_GOT_U15_W",/* name */
1032 TRUE
, /* partial_inplace */
1033 0x007fff00, /* src_mask */
1034 0x007fff00, /* dst_mask */
1035 FALSE
), /* pcrel_offset */
1036 HOWTO (R_C6000_SBR_GOT_L16_W
, /* type */
1038 2, /* size (0 = byte, 1 = short, 2 = long) */
1040 FALSE
, /* pc_relative */
1042 complain_overflow_dont
,/* complain_on_overflow */
1043 bfd_elf_generic_reloc
, /* special_function */
1044 "R_C6000_SBR_GOT_L16_W",/* name */
1045 TRUE
, /* partial_inplace */
1046 0x007fff80, /* src_mask */
1047 0x007fff80, /* dst_mask */
1048 FALSE
), /* pcrel_offset */
1049 EMPTY_HOWTO (R_C6000_SBR_GOT_H16_W
),
1050 HOWTO (R_C6000_DSBT_INDEX
, /* type */
1052 2, /* size (0 = byte, 1 = short, 2 = long) */
1054 FALSE
, /* pc_relative */
1056 complain_overflow_unsigned
,/* complain_on_overflow */
1057 bfd_elf_generic_reloc
, /* special_function */
1058 "R_C6000_DSBT_INDEX", /* name */
1059 TRUE
, /* partial_inplace */
1061 0x007fff00, /* dst_mask */
1062 FALSE
), /* pcrel_offset */
1063 HOWTO (R_C6000_PREL31
, /* type */
1065 2, /* size (0 = byte, 1 = short, 2 = long) */
1067 TRUE
, /* pc_relative */
1069 complain_overflow_dont
,/* complain_on_overflow */
1070 bfd_elf_generic_reloc
, /* special_function */
1071 "R_C6000_PREL31", /* name */
1072 TRUE
, /* partial_inplace */
1074 0x7fffffff, /* dst_mask */
1075 TRUE
), /* pcrel_offset */
1076 HOWTO (R_C6000_COPY
, /* type */
1078 2, /* size (0 = byte, 1 = short, 2 = long) */
1080 FALSE
, /* pc_relative */
1082 complain_overflow_dont
,/* complain_on_overflow */
1083 bfd_elf_generic_reloc
, /* special_function */
1084 "R_C6000_COPY", /* name */
1085 TRUE
, /* partial_inplace */
1087 0xffffffff, /* dst_mask */
1088 FALSE
), /* pcrel_offset */
1089 HOWTO (R_C6000_JUMP_SLOT
, /* type */
1091 2, /* size (0 = byte, 1 = short, 2 = long) */
1093 FALSE
, /* pc_relative */
1095 complain_overflow_dont
,/* complain_on_overflow */
1096 bfd_elf_generic_reloc
, /* special_function */
1097 "R_C6000_JUMP_SLOT", /* name */
1098 FALSE
, /* partial_inplace */
1100 0xffffffff, /* dst_mask */
1101 FALSE
), /* pcrel_offset */
1102 HOWTO (R_C6000_EHTYPE
, /* type */
1104 2, /* size (0 = byte, 1 = short, 2 = long) */
1106 FALSE
, /* pc_relative */
1108 complain_overflow_dont
,/* complain_on_overflow */
1109 bfd_elf_generic_reloc
, /* special_function */
1110 "R_C6000_EHTYPE", /* name */
1111 FALSE
, /* partial_inplace */
1113 0xffffffff, /* dst_mask */
1114 FALSE
), /* pcrel_offset */
1339 HOWTO (R_C6000_ALIGN
, /* type */
1341 0, /* size (0 = byte, 1 = short, 2 = long) */
1343 FALSE
, /* pc_relative */
1345 complain_overflow_dont
,/* complain_on_overflow */
1346 bfd_elf_generic_reloc
, /* special_function */
1347 "R_C6000_ALIGN", /* name */
1348 TRUE
, /* partial_inplace */
1351 FALSE
), /* pcrel_offset */
1352 HOWTO (R_C6000_FPHEAD
, /* type */
1354 0, /* size (0 = byte, 1 = short, 2 = long) */
1356 FALSE
, /* pc_relative */
1358 complain_overflow_dont
,/* complain_on_overflow */
1359 bfd_elf_generic_reloc
, /* special_function */
1360 "R_C6000_FPHEAD", /* name */
1361 TRUE
, /* partial_inplace */
1364 FALSE
), /* pcrel_offset */
1365 HOWTO (R_C6000_NOCMP
, /* type */
1367 0, /* size (0 = byte, 1 = short, 2 = long) */
1369 FALSE
, /* pc_relative */
1371 complain_overflow_dont
,/* complain_on_overflow */
1372 bfd_elf_generic_reloc
, /* special_function */
1373 "R_C6000_NOCMP", /* name */
1374 TRUE
, /* partial_inplace */
1377 FALSE
) /* pcrel_offset */
1380 /* Map BFD relocations to ELF relocations. */
1384 bfd_reloc_code_real_type bfd_reloc_val
;
1385 enum elf_tic6x_reloc_type elf_reloc_val
;
1388 static const tic6x_reloc_map elf32_tic6x_reloc_map
[] =
1390 { BFD_RELOC_NONE
, R_C6000_NONE
},
1391 { BFD_RELOC_32
, R_C6000_ABS32
},
1392 { BFD_RELOC_16
, R_C6000_ABS16
},
1393 { BFD_RELOC_8
, R_C6000_ABS8
},
1394 { BFD_RELOC_C6000_PCR_S21
, R_C6000_PCR_S21
},
1395 { BFD_RELOC_C6000_PCR_S12
, R_C6000_PCR_S12
},
1396 { BFD_RELOC_C6000_PCR_S10
, R_C6000_PCR_S10
},
1397 { BFD_RELOC_C6000_PCR_S7
, R_C6000_PCR_S7
},
1398 { BFD_RELOC_C6000_ABS_S16
, R_C6000_ABS_S16
},
1399 { BFD_RELOC_C6000_ABS_L16
, R_C6000_ABS_L16
},
1400 { BFD_RELOC_C6000_ABS_H16
, R_C6000_ABS_H16
},
1401 { BFD_RELOC_C6000_SBR_U15_B
, R_C6000_SBR_U15_B
},
1402 { BFD_RELOC_C6000_SBR_U15_H
, R_C6000_SBR_U15_H
},
1403 { BFD_RELOC_C6000_SBR_U15_W
, R_C6000_SBR_U15_W
},
1404 { BFD_RELOC_C6000_SBR_S16
, R_C6000_SBR_S16
},
1405 { BFD_RELOC_C6000_SBR_L16_B
, R_C6000_SBR_L16_B
},
1406 { BFD_RELOC_C6000_SBR_L16_H
, R_C6000_SBR_L16_H
},
1407 { BFD_RELOC_C6000_SBR_L16_W
, R_C6000_SBR_L16_W
},
1408 { BFD_RELOC_C6000_SBR_H16_B
, R_C6000_SBR_H16_B
},
1409 { BFD_RELOC_C6000_SBR_H16_H
, R_C6000_SBR_H16_H
},
1410 { BFD_RELOC_C6000_SBR_H16_W
, R_C6000_SBR_H16_W
},
1411 { BFD_RELOC_C6000_SBR_GOT_U15_W
, R_C6000_SBR_GOT_U15_W
},
1412 { BFD_RELOC_C6000_SBR_GOT_L16_W
, R_C6000_SBR_GOT_L16_W
},
1413 { BFD_RELOC_C6000_SBR_GOT_H16_W
, R_C6000_SBR_GOT_H16_W
},
1414 { BFD_RELOC_C6000_DSBT_INDEX
, R_C6000_DSBT_INDEX
},
1415 { BFD_RELOC_C6000_PREL31
, R_C6000_PREL31
},
1416 { BFD_RELOC_C6000_COPY
, R_C6000_COPY
},
1417 { BFD_RELOC_C6000_JUMP_SLOT
, R_C6000_JUMP_SLOT
},
1418 { BFD_RELOC_C6000_EHTYPE
, R_C6000_EHTYPE
},
1419 { BFD_RELOC_C6000_PCR_H16
, R_C6000_PCR_H16
},
1420 { BFD_RELOC_C6000_PCR_L16
, R_C6000_PCR_L16
},
1421 { BFD_RELOC_C6000_ALIGN
, R_C6000_ALIGN
},
1422 { BFD_RELOC_C6000_FPHEAD
, R_C6000_FPHEAD
},
1423 { BFD_RELOC_C6000_NOCMP
, R_C6000_NOCMP
}
1426 static reloc_howto_type
*
1427 elf32_tic6x_reloc_type_lookup (bfd
*abfd
, bfd_reloc_code_real_type code
)
1431 for (i
= 0; i
< ARRAY_SIZE (elf32_tic6x_reloc_map
); i
++)
1432 if (elf32_tic6x_reloc_map
[i
].bfd_reloc_val
== code
)
1434 enum elf_tic6x_reloc_type elf_reloc_val
;
1435 reloc_howto_type
*howto
;
1437 elf_reloc_val
= elf32_tic6x_reloc_map
[i
].elf_reloc_val
;
1438 if (elf32_tic6x_tdata (abfd
)->use_rela_p
)
1439 howto
= &elf32_tic6x_howto_table
[elf_reloc_val
];
1441 howto
= &elf32_tic6x_howto_table_rel
[elf_reloc_val
];
1443 /* Some relocations are RELA-only; do not return them for
1445 if (howto
->name
== NULL
)
1454 static reloc_howto_type
*
1455 elf32_tic6x_reloc_name_lookup (bfd
*abfd
, const char *r_name
)
1457 if (elf32_tic6x_tdata (abfd
)->use_rela_p
)
1461 for (i
= 0; i
< ARRAY_SIZE (elf32_tic6x_howto_table
); i
++)
1462 if (elf32_tic6x_howto_table
[i
].name
!= NULL
1463 && strcasecmp (elf32_tic6x_howto_table
[i
].name
, r_name
) == 0)
1464 return &elf32_tic6x_howto_table
[i
];
1470 for (i
= 0; i
< ARRAY_SIZE (elf32_tic6x_howto_table_rel
); i
++)
1471 if (elf32_tic6x_howto_table_rel
[i
].name
!= NULL
1472 && strcasecmp (elf32_tic6x_howto_table_rel
[i
].name
, r_name
) == 0)
1473 return &elf32_tic6x_howto_table_rel
[i
];
1480 elf32_tic6x_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*bfd_reloc
,
1481 Elf_Internal_Rela
*elf_reloc
)
1483 unsigned int r_type
;
1485 r_type
= ELF32_R_TYPE (elf_reloc
->r_info
);
1486 if (r_type
>= ARRAY_SIZE (elf32_tic6x_howto_table
))
1487 bfd_reloc
->howto
= NULL
;
1489 bfd_reloc
->howto
= &elf32_tic6x_howto_table
[r_type
];
1493 elf32_tic6x_info_to_howto_rel (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*bfd_reloc
,
1494 Elf_Internal_Rela
*elf_reloc
)
1496 unsigned int r_type
;
1498 r_type
= ELF32_R_TYPE (elf_reloc
->r_info
);
1499 if (r_type
>= ARRAY_SIZE (elf32_tic6x_howto_table_rel
))
1500 bfd_reloc
->howto
= NULL
;
1502 bfd_reloc
->howto
= &elf32_tic6x_howto_table_rel
[r_type
];
1506 elf32_tic6x_set_use_rela_p (bfd
*abfd
, bfd_boolean use_rela_p
)
1508 elf32_tic6x_tdata (abfd
)->use_rela_p
= use_rela_p
;
1511 /* Create an entry in a C6X ELF linker hash table. */
1513 static struct bfd_hash_entry
*
1514 elf32_tic6x_link_hash_newfunc (struct bfd_hash_entry
*entry
,
1515 struct bfd_hash_table
*table
,
1518 /* Allocate the structure if it has not already been allocated by a
1522 entry
= bfd_hash_allocate (table
,
1523 sizeof (struct elf32_tic6x_link_hash_entry
));
1528 /* Call the allocation method of the superclass. */
1529 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
1532 struct elf32_tic6x_link_hash_entry
*eh
;
1534 eh
= (struct elf32_tic6x_link_hash_entry
*) entry
;
1535 eh
->dyn_relocs
= NULL
;
1541 /* Create a C6X ELF linker hash table. */
1543 static struct bfd_link_hash_table
*
1544 elf32_tic6x_link_hash_table_create (bfd
*abfd
)
1546 struct elf32_tic6x_link_hash_table
*ret
;
1547 bfd_size_type amt
= sizeof (struct elf32_tic6x_link_hash_table
);
1549 ret
= bfd_malloc (amt
);
1553 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
,
1554 elf32_tic6x_link_hash_newfunc
,
1555 sizeof (struct elf32_tic6x_link_hash_entry
),
1562 ret
->sym_cache
.abfd
= NULL
;
1564 ret
->elf
.is_relocatable_executable
= 1;
1566 return &ret
->elf
.root
;
1570 elf32_tic6x_final_link (bfd
*abfd
, struct bfd_link_info
*info
)
1574 obj_attribute
*out_attr
;
1575 out_attr
= elf_known_obj_attributes_proc (abfd
);
1576 if (out_attr
[Tag_ABI_PIC
].i
== 0)
1578 _bfd_error_handler (_("warning: generating a shared library "
1579 "containing non-PIC code"));
1581 if (out_attr
[Tag_ABI_PID
].i
== 0)
1583 _bfd_error_handler (_("warning: generating a shared library "
1584 "containing non-PID code"));
1587 /* Invoke the regular ELF backend linker to do all the work. */
1588 if (!bfd_elf_final_link (abfd
, info
))
1594 /* Destroy a C6X ELF linker hash table. */
1597 elf32_tic6x_link_hash_table_free (struct bfd_link_hash_table
*hash
)
1599 _bfd_generic_link_hash_table_free (hash
);
1602 /* Called to pass PARAMS to the backend. We store them in the hash table
1603 associated with INFO. */
1606 elf32_tic6x_setup (struct bfd_link_info
*info
,
1607 struct elf32_tic6x_params
*params
)
1609 struct elf32_tic6x_link_hash_table
*htab
= elf32_tic6x_hash_table (info
);
1610 htab
->params
= *params
;
1613 /* Determine if we're dealing with a DSBT object. */
1616 elf32_tic6x_using_dsbt (bfd
*abfd
)
1618 return bfd_elf_get_obj_attr_int (abfd
, OBJ_ATTR_PROC
,
1622 /* Create .plt, .rela.plt, .got, .got.plt, .rela.got and .dsbt
1623 sections in DYNOBJ, and set up shortcuts to them in our hash
1627 elf32_tic6x_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
1629 struct elf32_tic6x_link_hash_table
*htab
;
1632 htab
= elf32_tic6x_hash_table (info
);
1636 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
1640 flags
= (SEC_ALLOC
| SEC_LOAD
1641 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
1642 htab
->dsbt
= bfd_make_section_anyway_with_flags (dynobj
, ".dsbt",
1644 if (htab
->dsbt
== NULL
1645 || ! bfd_set_section_alignment (dynobj
, htab
->dsbt
, 2)
1646 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.splt
, 5))
1649 htab
->sdynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
1651 htab
->srelbss
= bfd_get_section_by_name (dynobj
, ".rela.bss");
1654 || (!info
->shared
&& !htab
->srelbss
))
1661 elf32_tic6x_mkobject (bfd
*abfd
)
1665 ret
= bfd_elf_allocate_object (abfd
, sizeof (struct elf32_tic6x_obj_tdata
),
1668 elf32_tic6x_set_use_rela_p (abfd
, TRUE
);
1672 /* Install relocation RELA into section SRELA, incrementing its
1676 elf32_tic6x_install_rela (bfd
*output_bfd
, asection
*srela
,
1677 Elf_Internal_Rela
*rela
)
1680 bfd_vma off
= srela
->reloc_count
++ * sizeof (Elf32_External_Rela
);
1681 loc
= srela
->contents
+ off
;
1682 BFD_ASSERT (off
< srela
->size
);
1683 bfd_elf32_swap_reloca_out (output_bfd
, rela
, loc
);
1686 /* Create a dynamic reloc against the GOT at offset OFFSET. The contents
1687 of the GOT at this offset have been initialized with the relocation. */
1690 elf32_tic6x_make_got_dynreloc (bfd
*output_bfd
,
1691 struct elf32_tic6x_link_hash_table
*htab
,
1692 asection
*sym_sec
, bfd_vma offset
)
1694 asection
*sgot
= htab
->elf
.sgot
;
1695 Elf_Internal_Rela outrel
;
1698 outrel
.r_offset
= sgot
->output_section
->vma
+ sgot
->output_offset
+ offset
;
1699 outrel
.r_addend
= bfd_get_32 (output_bfd
, sgot
->contents
+ offset
);
1700 if (sym_sec
&& sym_sec
->output_section
1701 && ! bfd_is_abs_section (sym_sec
->output_section
)
1702 && ! bfd_is_und_section (sym_sec
->output_section
))
1704 dynindx
= elf_section_data (sym_sec
->output_section
)->dynindx
;
1705 outrel
.r_addend
-= sym_sec
->output_section
->vma
;
1711 outrel
.r_info
= ELF32_R_INFO (dynindx
, R_C6000_ABS32
);
1712 elf32_tic6x_install_rela (output_bfd
, htab
->elf
.srelgot
, &outrel
);
1715 /* Finish up dynamic symbol handling. We set the contents of various
1716 dynamic sections here. */
1719 elf32_tic6x_finish_dynamic_symbol (bfd
* output_bfd
,
1720 struct bfd_link_info
*info
,
1721 struct elf_link_hash_entry
*h
,
1722 Elf_Internal_Sym
* sym
)
1725 struct elf32_tic6x_link_hash_table
*htab
;
1727 htab
= elf32_tic6x_hash_table (info
);
1728 dynobj
= htab
->elf
.dynobj
;
1730 if (h
->plt
.offset
!= (bfd_vma
) -1)
1733 bfd_vma got_section_offset
, got_dp_offset
, rela_offset
;
1734 Elf_Internal_Rela rela
;
1736 asection
*plt
, *gotplt
, *relplt
;
1737 const struct elf_backend_data
*bed
;
1739 bed
= get_elf_backend_data (output_bfd
);
1741 BFD_ASSERT (htab
->elf
.splt
!= NULL
);
1742 plt
= htab
->elf
.splt
;
1743 gotplt
= htab
->elf
.sgotplt
;
1744 relplt
= htab
->elf
.srelplt
;
1746 /* This symbol has an entry in the procedure linkage table. Set
1749 if ((h
->dynindx
== -1
1750 && !((h
->forced_local
|| info
->executable
)
1752 && h
->type
== STT_GNU_IFUNC
))
1758 /* Get the index in the procedure linkage table which
1759 corresponds to this symbol. This is the index of this symbol
1760 in all the symbols for which we are making plt entries. The
1761 first entry in the procedure linkage table is reserved.
1763 Get the offset into the .got table of the entry that
1764 corresponds to this function. Each .got entry is 4 bytes.
1765 The first three are reserved.
1767 For static executables, we don't reserve anything. */
1769 plt_index
= h
->plt
.offset
/ PLT_ENTRY_SIZE
- 1;
1770 got_section_offset
= plt_index
+ bed
->got_header_size
/ 4;
1771 got_dp_offset
= got_section_offset
+ htab
->params
.dsbt_size
;
1772 rela_offset
= plt_index
* sizeof (Elf32_External_Rela
);
1774 got_section_offset
*= 4;
1776 /* Fill in the entry in the procedure linkage table. */
1778 /* ldw .d2t2 *+B14($GOT(f)), b2 */
1779 bfd_put_32 (output_bfd
, got_dp_offset
<< 8 | 0x0100006e,
1780 plt
->contents
+ h
->plt
.offset
);
1781 /* mvk .s2 low(rela_offset), b0 */
1782 bfd_put_32 (output_bfd
, (rela_offset
& 0xffff) << 7 | 0x0000002a,
1783 plt
->contents
+ h
->plt
.offset
+ 4);
1784 /* mvkh .s2 high(rela_offset), b0 */
1785 bfd_put_32 (output_bfd
, ((rela_offset
>> 16) & 0xffff) << 7 | 0x0000006a,
1786 plt
->contents
+ h
->plt
.offset
+ 8);
1788 bfd_put_32 (output_bfd
, 0x00002000,
1789 plt
->contents
+ h
->plt
.offset
+ 12);
1791 bfd_put_32 (output_bfd
, 0x00080362,
1792 plt
->contents
+ h
->plt
.offset
+ 16);
1794 bfd_put_32 (output_bfd
, 0x00008000,
1795 plt
->contents
+ h
->plt
.offset
+ 20);
1797 /* Fill in the entry in the global offset table. */
1798 bfd_put_32 (output_bfd
,
1799 (plt
->output_section
->vma
+ plt
->output_offset
),
1800 gotplt
->contents
+ got_section_offset
);
1802 /* Fill in the entry in the .rel.plt section. */
1803 rela
.r_offset
= (gotplt
->output_section
->vma
1804 + gotplt
->output_offset
1805 + got_section_offset
);
1806 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_C6000_JUMP_SLOT
);
1808 loc
= relplt
->contents
+ rela_offset
;
1809 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1811 if (!h
->def_regular
)
1813 /* Mark the symbol as undefined, rather than as defined in
1814 the .plt section. */
1815 sym
->st_shndx
= SHN_UNDEF
;
1820 if (h
->got
.offset
!= (bfd_vma
) -1)
1825 /* This symbol has an entry in the global offset table.
1828 sgot
= bfd_get_section_by_name (dynobj
, ".got");
1829 srela
= bfd_get_section_by_name (dynobj
, ".rela.got");
1830 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
1832 /* If this is a -Bsymbolic link, and the symbol is defined
1833 locally, we just want to emit a RELATIVE reloc. Likewise if
1834 the symbol was forced to be local because of a version file.
1835 The entry in the global offset table will already have been
1836 initialized in the relocate_section function. */
1839 || h
->dynindx
== -1 || h
->forced_local
) && h
->def_regular
)
1841 asection
*s
= h
->root
.u
.def
.section
;
1842 elf32_tic6x_make_got_dynreloc (output_bfd
, htab
, s
,
1843 h
->got
.offset
& ~(bfd_vma
) 1);
1847 Elf_Internal_Rela outrel
;
1848 bfd_put_32 (output_bfd
, (bfd_vma
) 0,
1849 sgot
->contents
+ (h
->got
.offset
& ~(bfd_vma
) 1));
1850 outrel
.r_offset
= (sgot
->output_section
->vma
1851 + sgot
->output_offset
1852 + (h
->got
.offset
& ~(bfd_vma
) 1));
1853 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_C6000_ABS32
);
1854 outrel
.r_addend
= 0;
1856 elf32_tic6x_install_rela (output_bfd
, srela
, &outrel
);
1862 Elf_Internal_Rela rel
;
1864 /* This symbol needs a copy reloc. Set it up. */
1866 if (h
->dynindx
== -1
1867 || (h
->root
.type
!= bfd_link_hash_defined
1868 && h
->root
.type
!= bfd_link_hash_defweak
)
1869 || htab
->srelbss
== NULL
)
1872 rel
.r_offset
= (h
->root
.u
.def
.value
1873 + h
->root
.u
.def
.section
->output_section
->vma
1874 + h
->root
.u
.def
.section
->output_offset
);
1875 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_C6000_COPY
);
1878 elf32_tic6x_install_rela (output_bfd
, htab
->srelbss
, &rel
);
1881 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
1882 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
1883 || h
== elf_hash_table (info
)->hgot
)
1884 sym
->st_shndx
= SHN_ABS
;
1889 /* Unwinding tables are not referenced directly. This pass marks them as
1890 required if the corresponding code section is marked. */
1893 elf32_tic6x_gc_mark_extra_sections (struct bfd_link_info
*info
,
1894 elf_gc_mark_hook_fn gc_mark_hook
)
1897 Elf_Internal_Shdr
**elf_shdrp
;
1900 /* Marking EH data may cause additional code sections to be marked,
1901 requiring multiple passes. */
1906 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link_next
)
1910 if (! is_tic6x_elf (sub
))
1913 elf_shdrp
= elf_elfsections (sub
);
1914 for (o
= sub
->sections
; o
!= NULL
; o
= o
->next
)
1916 Elf_Internal_Shdr
*hdr
;
1918 hdr
= &elf_section_data (o
)->this_hdr
;
1919 if (hdr
->sh_type
== SHT_C6000_UNWIND
1921 && hdr
->sh_link
< elf_numsections (sub
)
1923 && elf_shdrp
[hdr
->sh_link
]->bfd_section
->gc_mark
)
1926 if (!_bfd_elf_gc_mark (info
, o
, gc_mark_hook
))
1936 /* Return TRUE if this is an unwinding table index. */
1939 is_tic6x_elf_unwind_section_name (const char *name
)
1941 return (CONST_STRNEQ (name
, ELF_STRING_C6000_unwind
)
1942 || CONST_STRNEQ (name
, ELF_STRING_C6000_unwind_once
));
1946 /* Set the type and flags for an unwinding index table. We do this by
1947 the section name, which is a hack, but ought to work. */
1950 elf32_tic6x_fake_sections (bfd
*abfd ATTRIBUTE_UNUSED
,
1951 Elf_Internal_Shdr
*hdr
, asection
*sec
)
1955 name
= bfd_get_section_name (abfd
, sec
);
1957 if (is_tic6x_elf_unwind_section_name (name
))
1959 hdr
->sh_type
= SHT_C6000_UNWIND
;
1960 hdr
->sh_flags
|= SHF_LINK_ORDER
;
1966 /* Update the got entry reference counts for the section being removed. */
1969 elf32_tic6x_gc_sweep_hook (bfd
*abfd
,
1970 struct bfd_link_info
*info
,
1972 const Elf_Internal_Rela
*relocs
)
1974 struct elf32_tic6x_link_hash_table
*htab
;
1975 Elf_Internal_Shdr
*symtab_hdr
;
1976 struct elf_link_hash_entry
**sym_hashes
;
1977 bfd_signed_vma
*local_got_refcounts
;
1978 const Elf_Internal_Rela
*rel
, *relend
;
1980 if (info
->relocatable
)
1983 htab
= elf32_tic6x_hash_table (info
);
1987 elf_section_data (sec
)->local_dynrel
= NULL
;
1989 symtab_hdr
= &elf_symtab_hdr (abfd
);
1990 sym_hashes
= elf_sym_hashes (abfd
);
1991 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1993 relend
= relocs
+ sec
->reloc_count
;
1994 for (rel
= relocs
; rel
< relend
; rel
++)
1996 unsigned long r_symndx
;
1997 unsigned int r_type
;
1998 struct elf_link_hash_entry
*h
= NULL
;
2000 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2001 if (r_symndx
>= symtab_hdr
->sh_info
)
2003 struct elf32_tic6x_link_hash_entry
*eh
;
2004 struct elf_dyn_relocs
**pp
;
2005 struct elf_dyn_relocs
*p
;
2007 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
2008 while (h
->root
.type
== bfd_link_hash_indirect
2009 || h
->root
.type
== bfd_link_hash_warning
)
2010 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2011 eh
= (struct elf32_tic6x_link_hash_entry
*) h
;
2013 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
2016 /* Everything must go for SEC. */
2022 r_type
= ELF32_R_TYPE (rel
->r_info
);
2026 case R_C6000_SBR_GOT_U15_W
:
2027 case R_C6000_SBR_GOT_L16_W
:
2028 case R_C6000_SBR_GOT_H16_W
:
2029 case R_C6000_EHTYPE
:
2032 if (h
->got
.refcount
> 0)
2033 h
->got
.refcount
-= 1;
2035 else if (local_got_refcounts
!= NULL
)
2037 if (local_got_refcounts
[r_symndx
] > 0)
2038 local_got_refcounts
[r_symndx
] -= 1;
2050 /* Adjust a symbol defined by a dynamic object and referenced by a
2051 regular object. The current definition is in some section of the
2052 dynamic object, but we're not including those sections. We have to
2053 change the definition to something the rest of the link can
2057 elf32_tic6x_adjust_dynamic_symbol (struct bfd_link_info
*info
,
2058 struct elf_link_hash_entry
*h
)
2060 struct elf32_tic6x_link_hash_table
*htab
;
2064 dynobj
= elf_hash_table (info
)->dynobj
;
2066 /* Make sure we know what is going on here. */
2067 BFD_ASSERT (dynobj
!= NULL
2069 || h
->u
.weakdef
!= NULL
2070 || (h
->def_dynamic
&& h
->ref_regular
&& !h
->def_regular
)));
2072 /* If this is a function, put it in the procedure linkage table. We
2073 will fill in the contents of the procedure linkage table later,
2074 when we know the address of the .got section. */
2075 if (h
->type
== STT_FUNC
2078 if (h
->plt
.refcount
<= 0
2079 || SYMBOL_CALLS_LOCAL (info
, h
)
2080 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
2081 && h
->root
.type
== bfd_link_hash_undefweak
))
2083 /* This case can occur if we saw a PLT32 reloc in an input
2084 file, but the symbol was never referred to by a dynamic
2085 object, or if all references were garbage collected. In
2086 such a case, we don't actually need to build a procedure
2087 linkage table, and we can just do a PC32 reloc instead. */
2088 h
->plt
.offset
= (bfd_vma
) -1;
2095 /* If this is a weak symbol, and there is a real definition, the
2096 processor independent code will have arranged for us to see the
2097 real definition first, and we can just use the same value. */
2098 if (h
->u
.weakdef
!= NULL
)
2100 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
2101 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
2102 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
2103 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
2104 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
2108 /* This is a reference to a symbol defined by a dynamic object which
2109 is not a function. */
2111 /* If we are creating a shared library, we must presume that the
2112 only references to the symbol are via the global offset table.
2113 For such cases we need not do anything here; the relocations will
2114 be handled correctly by relocate_section. */
2118 /* If there are no references to this symbol that do not use the
2119 GOT, we don't need to generate a copy reloc. */
2120 if (!h
->non_got_ref
)
2123 /* If -z nocopyreloc was given, we won't generate them either. */
2124 if (info
->nocopyreloc
)
2130 htab
= elf32_tic6x_hash_table (info
);
2136 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
2137 h
->root
.root
.string
);
2141 /* We must allocate the symbol in our .dynbss section, which will
2142 become part of the .bss section of the executable. There will be
2143 an entry for this symbol in the .dynsym section. The dynamic
2144 object will contain position independent code, so all references
2145 from the dynamic object to this symbol will go through the global
2146 offset table. The dynamic linker will use the .dynsym entry to
2147 determine the address it must put in the global offset table, so
2148 both the dynamic object and the regular object will refer to the
2149 same memory location for the variable. */
2151 /* We must generate a R_C6000_COPY reloc to tell the dynamic linker to
2152 copy the initial value out of the dynamic object and into the
2153 runtime process image. */
2154 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
2156 htab
->srelbss
->size
+= sizeof (Elf32_External_Rela
);
2162 return _bfd_elf_adjust_dynamic_copy (h
, s
);
2166 elf32_tic6x_new_section_hook (bfd
*abfd
, asection
*sec
)
2170 /* Allocate target specific section data. */
2171 if (!sec
->used_by_bfd
)
2173 _tic6x_elf_section_data
*sdata
;
2174 bfd_size_type amt
= sizeof (*sdata
);
2176 sdata
= (_tic6x_elf_section_data
*) bfd_zalloc (abfd
, amt
);
2179 sec
->used_by_bfd
= sdata
;
2182 ret
= _bfd_elf_new_section_hook (abfd
, sec
);
2183 sec
->use_rela_p
= elf32_tic6x_tdata (abfd
)->use_rela_p
;
2188 /* Return true if relocation REL against section SEC is a REL rather
2189 than RELA relocation. RELOCS is the first relocation in the
2190 section and ABFD is the bfd that contains SEC. */
2193 elf32_tic6x_rel_relocation_p (bfd
*abfd
, asection
*sec
,
2194 const Elf_Internal_Rela
*relocs
,
2195 const Elf_Internal_Rela
*rel
)
2197 Elf_Internal_Shdr
*rel_hdr
;
2198 const struct elf_backend_data
*bed
;
2200 /* To determine which flavor of relocation this is, we depend on the
2201 fact that the INPUT_SECTION's REL_HDR is read before RELA_HDR. */
2202 rel_hdr
= elf_section_data (sec
)->rel
.hdr
;
2203 if (rel_hdr
== NULL
)
2205 bed
= get_elf_backend_data (abfd
);
2206 return ((size_t) (rel
- relocs
)
2207 < NUM_SHDR_ENTRIES (rel_hdr
) * bed
->s
->int_rels_per_ext_rel
);
2210 /* We need dynamic symbols for every section, since segments can
2211 relocate independently. */
2213 elf32_tic6x_link_omit_section_dynsym (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2214 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
2217 switch (elf_section_data (p
)->this_hdr
.sh_type
)
2221 /* If sh_type is yet undecided, assume it could be
2222 SHT_PROGBITS/SHT_NOBITS. */
2226 /* There shouldn't be section relative relocations
2227 against any other section. */
2234 elf32_tic6x_relocate_section (bfd
*output_bfd
,
2235 struct bfd_link_info
*info
,
2237 asection
*input_section
,
2239 Elf_Internal_Rela
*relocs
,
2240 Elf_Internal_Sym
*local_syms
,
2241 asection
**local_sections
)
2243 struct elf32_tic6x_link_hash_table
*htab
;
2244 Elf_Internal_Shdr
*symtab_hdr
;
2245 struct elf_link_hash_entry
**sym_hashes
;
2246 bfd_vma
*local_got_offsets
;
2247 Elf_Internal_Rela
*rel
;
2248 Elf_Internal_Rela
*relend
;
2249 bfd_boolean ok
= TRUE
;
2251 htab
= elf32_tic6x_hash_table (info
);
2252 symtab_hdr
= & elf_symtab_hdr (input_bfd
);
2253 sym_hashes
= elf_sym_hashes (input_bfd
);
2254 local_got_offsets
= elf_local_got_offsets (input_bfd
);
2256 relend
= relocs
+ input_section
->reloc_count
;
2258 for (rel
= relocs
; rel
< relend
; rel
++)
2261 unsigned long r_symndx
;
2263 reloc_howto_type
*howto
;
2264 Elf_Internal_Sym
*sym
;
2266 struct elf_link_hash_entry
*h
;
2267 bfd_vma off
, relocation
;
2268 bfd_boolean unresolved_reloc
;
2269 bfd_reloc_status_type r
;
2270 struct bfd_link_hash_entry
*sbh
;
2273 r_type
= ELF32_R_TYPE (rel
->r_info
);
2274 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2276 is_rel
= elf32_tic6x_rel_relocation_p (input_bfd
, input_section
,
2280 elf32_tic6x_info_to_howto_rel (input_bfd
, &bfd_reloc
, rel
);
2282 elf32_tic6x_info_to_howto (input_bfd
, &bfd_reloc
, rel
);
2283 howto
= bfd_reloc
.howto
;
2286 bfd_set_error (bfd_error_bad_value
);
2293 unresolved_reloc
= FALSE
;
2295 if (r_symndx
< symtab_hdr
->sh_info
)
2297 sym
= local_syms
+ r_symndx
;
2298 sec
= local_sections
[r_symndx
];
2299 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
2305 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
2306 r_symndx
, symtab_hdr
, sym_hashes
,
2308 unresolved_reloc
, warned
);
2311 if (sec
!= NULL
&& elf_discarded_section (sec
))
2312 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
2313 rel
, relend
, howto
, contents
);
2315 if (info
->relocatable
)
2319 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
2322 relocation
= sec
->output_offset
+ sym
->st_value
;
2323 r
= _bfd_relocate_contents (howto
, input_bfd
, relocation
,
2324 contents
+ rel
->r_offset
);
2334 case R_C6000_FPHEAD
:
2336 /* No action needed. */
2339 case R_C6000_PCR_S21
:
2340 /* A branch to an undefined weak symbol is turned into a
2341 "b .s2 B3" instruction if the existing insn is of the
2342 form "b .s2 symbol". */
2343 if (h
? h
->root
.type
== bfd_link_hash_undefweak
2344 && (htab
->elf
.splt
== NULL
|| h
->plt
.offset
== (bfd_vma
) -1)
2345 : r_symndx
!= STN_UNDEF
&& bfd_is_und_section (sec
))
2347 unsigned long oldval
;
2348 oldval
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
2350 if ((oldval
& 0x7e) == 0x12)
2352 oldval
&= 0xF0000001;
2353 bfd_put_32 (input_bfd
, oldval
| 0x000c0362,
2354 contents
+ rel
->r_offset
);
2360 case R_C6000_PCR_S12
:
2361 case R_C6000_PCR_S10
:
2362 case R_C6000_PCR_S7
:
2364 && h
->plt
.offset
!= (bfd_vma
) -1
2365 && htab
->elf
.splt
!= NULL
)
2367 relocation
= (htab
->elf
.splt
->output_section
->vma
2368 + htab
->elf
.splt
->output_offset
2372 /* Generic PC-relative handling produces a value relative to
2373 the exact location of the relocation. Adjust it to be
2374 relative to the start of the fetch packet instead. */
2375 relocation
+= (input_section
->output_section
->vma
2376 + input_section
->output_offset
2377 + rel
->r_offset
) & 0x1f;
2378 unresolved_reloc
= FALSE
;
2381 case R_C6000_DSBT_INDEX
:
2382 relocation
= elf32_tic6x_hash_table (info
)->params
.dsbt_index
;
2383 if (!info
->shared
|| relocation
!= 0)
2390 case R_C6000_ABS_S16
:
2391 case R_C6000_ABS_L16
:
2392 case R_C6000_ABS_H16
:
2393 /* When generating a shared object or relocatable executable, these
2394 relocations are copied into the output file to be resolved at
2396 if ((info
->shared
|| elf32_tic6x_using_dsbt (output_bfd
))
2397 && (input_section
->flags
& SEC_ALLOC
)
2399 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
2400 || h
->root
.type
!= bfd_link_hash_undefweak
))
2402 Elf_Internal_Rela outrel
;
2403 bfd_boolean skip
, relocate
;
2406 unresolved_reloc
= FALSE
;
2408 sreloc
= elf_section_data (input_section
)->sreloc
;
2409 BFD_ASSERT (sreloc
!= NULL
&& sreloc
->contents
!= NULL
);
2415 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
2417 if (outrel
.r_offset
== (bfd_vma
) -1)
2419 else if (outrel
.r_offset
== (bfd_vma
) -2)
2420 skip
= TRUE
, relocate
= TRUE
;
2421 outrel
.r_offset
+= (input_section
->output_section
->vma
2422 + input_section
->output_offset
);
2425 memset (&outrel
, 0, sizeof outrel
);
2430 || !h
->def_regular
))
2432 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
2433 outrel
.r_addend
= rel
->r_addend
;
2439 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2441 if (bfd_is_abs_section (sec
))
2443 else if (sec
== NULL
|| sec
->owner
== NULL
)
2445 bfd_set_error (bfd_error_bad_value
);
2452 osec
= sec
->output_section
;
2453 indx
= elf_section_data (osec
)->dynindx
;
2454 outrel
.r_addend
-= osec
->vma
;
2455 BFD_ASSERT (indx
!= 0);
2458 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
2461 elf32_tic6x_install_rela (output_bfd
, sreloc
, &outrel
);
2463 /* If this reloc is against an external symbol, we do not want to
2464 fiddle with the addend. Otherwise, we need to include the symbol
2465 value so that it becomes an addend for the dynamic reloc. */
2470 /* Generic logic OK. */
2473 case R_C6000_SBR_U15_B
:
2474 case R_C6000_SBR_U15_H
:
2475 case R_C6000_SBR_U15_W
:
2476 case R_C6000_SBR_S16
:
2477 case R_C6000_SBR_L16_B
:
2478 case R_C6000_SBR_L16_H
:
2479 case R_C6000_SBR_L16_W
:
2480 case R_C6000_SBR_H16_B
:
2481 case R_C6000_SBR_H16_H
:
2482 case R_C6000_SBR_H16_W
:
2483 sbh
= bfd_link_hash_lookup (info
->hash
, "__c6xabi_DSBT_BASE",
2484 FALSE
, FALSE
, TRUE
);
2486 && (sbh
->type
== bfd_link_hash_defined
2487 || sbh
->type
== bfd_link_hash_defweak
))
2489 if (h
? (h
->root
.type
== bfd_link_hash_undefweak
2490 && (htab
->elf
.splt
== NULL
2491 || h
->plt
.offset
== (bfd_vma
) -1))
2492 : r_symndx
!= STN_UNDEF
&& bfd_is_und_section (sec
))
2495 relocation
-= (sbh
->u
.def
.value
2496 + sbh
->u
.def
.section
->output_section
->vma
2497 + sbh
->u
.def
.section
->output_offset
);
2501 (*_bfd_error_handler
) (_("%B: SB-relative relocation but "
2502 "__c6xabi_DSBT_BASE not defined"),
2509 case R_C6000_SBR_GOT_U15_W
:
2510 case R_C6000_SBR_GOT_L16_W
:
2511 case R_C6000_SBR_GOT_H16_W
:
2512 case R_C6000_EHTYPE
:
2513 /* Relocation is to the entry for this symbol in the global
2515 if (htab
->elf
.sgot
== NULL
)
2522 off
= h
->got
.offset
;
2523 dyn
= htab
->elf
.dynamic_sections_created
;
2524 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
2526 && SYMBOL_REFERENCES_LOCAL (info
, h
))
2527 || (ELF_ST_VISIBILITY (h
->other
)
2528 && h
->root
.type
== bfd_link_hash_undefweak
))
2530 /* This is actually a static link, or it is a
2531 -Bsymbolic link and the symbol is defined
2532 locally, or the symbol was forced to be local
2533 because of a version file. We must initialize
2534 this entry in the global offset table. Since the
2535 offset must always be a multiple of 4, we use the
2536 least significant bit to record whether we have
2537 initialized it already.
2539 When doing a dynamic link, we create a .rel.got
2540 relocation entry to initialize the value. This
2541 is done in the finish_dynamic_symbol routine. */
2546 bfd_put_32 (output_bfd
, relocation
,
2547 htab
->elf
.sgot
->contents
+ off
);
2550 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
,
2552 && !(ELF_ST_VISIBILITY (h
->other
)
2553 && h
->root
.type
== bfd_link_hash_undefweak
))
2554 elf32_tic6x_make_got_dynreloc (output_bfd
, htab
, sec
,
2559 unresolved_reloc
= FALSE
;
2563 if (local_got_offsets
== NULL
)
2566 off
= local_got_offsets
[r_symndx
];
2568 /* The offset must always be a multiple of 4. We use
2569 the least significant bit to record whether we have
2570 already generated the necessary reloc. */
2575 bfd_put_32 (output_bfd
, relocation
,
2576 htab
->elf
.sgot
->contents
+ off
);
2578 if (info
->shared
|| elf32_tic6x_using_dsbt (output_bfd
))
2579 elf32_tic6x_make_got_dynreloc (output_bfd
, htab
, sec
, off
);
2581 local_got_offsets
[r_symndx
] |= 1;
2585 if (off
>= (bfd_vma
) -2)
2589 relocation
= (htab
->elf
.sgot
->output_section
->vma
2590 + htab
->elf
.sgot
->output_offset
+ off
2591 - htab
->dsbt
->output_section
->vma
2592 - htab
->dsbt
->output_offset
);
2594 relocation
= (htab
->elf
.sgot
->output_section
->vma
2595 + htab
->elf
.sgot
->output_offset
+ off
2596 - htab
->elf
.sgotplt
->output_section
->vma
2597 - htab
->elf
.sgotplt
->output_offset
);
2599 if (rel
->r_addend
!= 0)
2601 /* We can't do anything for a relocation which is against
2602 a symbol *plus offset*. GOT holds relocations for
2603 symbols. Make this an error; the compiler isn't
2604 allowed to pass us these kinds of things. */
2606 (*_bfd_error_handler
)
2607 (_("%B, section %A: relocation %s with non-zero addend %d"
2608 " against local symbol"),
2611 elf32_tic6x_howto_table
[r_type
].name
,
2614 (*_bfd_error_handler
)
2615 (_("%B, section %A: relocation %s with non-zero addend %d"
2616 " against symbol `%s'"),
2619 elf32_tic6x_howto_table
[r_type
].name
,
2621 h
->root
.root
.string
[0] != '\0' ? h
->root
.root
.string
2622 : _("[whose name is lost]"));
2624 bfd_set_error (bfd_error_bad_value
);
2629 case R_C6000_PREL31
:
2631 && h
->plt
.offset
!= (bfd_vma
) -1
2632 && htab
->elf
.splt
!= NULL
)
2634 relocation
= (htab
->elf
.splt
->output_section
->vma
2635 + htab
->elf
.splt
->output_offset
2641 /* Invalid in relocatable object. */
2643 /* Unknown relocation. */
2644 (*_bfd_error_handler
) (_("%B: invalid relocation type %d"),
2650 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
2651 contents
, rel
->r_offset
,
2652 relocation
, rel
->r_addend
);
2655 if (r
== bfd_reloc_ok
2656 && howto
->complain_on_overflow
== complain_overflow_bitfield
)
2658 /* Generic overflow handling accepts cases the ABI says
2659 should be rejected for R_C6000_ABS16 and
2661 bfd_vma value
= (relocation
+ rel
->r_addend
) & 0xffffffff;
2662 bfd_vma sbit
= 1 << (howto
->bitsize
- 1);
2663 bfd_vma sbits
= (-(bfd_vma
) sbit
) & 0xffffffff;
2664 bfd_vma value_sbits
= value
& sbits
;
2666 if (value_sbits
!= 0
2667 && value_sbits
!= sbit
2668 && value_sbits
!= sbits
)
2669 r
= bfd_reloc_overflow
;
2672 if (r
!= bfd_reloc_ok
)
2675 const char *error_message
;
2678 name
= h
->root
.root
.string
;
2681 name
= bfd_elf_string_from_elf_section (input_bfd
,
2682 symtab_hdr
->sh_link
,
2687 name
= bfd_section_name (input_bfd
, sec
);
2692 case bfd_reloc_overflow
:
2693 /* If the overflowing reloc was to an undefined symbol,
2694 we have already printed one error message and there
2695 is no point complaining again. */
2697 h
->root
.type
!= bfd_link_hash_undefined
)
2698 && (!((*info
->callbacks
->reloc_overflow
)
2699 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
2700 (bfd_vma
) 0, input_bfd
, input_section
,
2705 case bfd_reloc_undefined
:
2706 if (!((*info
->callbacks
->undefined_symbol
)
2707 (info
, name
, input_bfd
, input_section
,
2708 rel
->r_offset
, TRUE
)))
2712 case bfd_reloc_outofrange
:
2713 error_message
= _("out of range");
2716 case bfd_reloc_notsupported
:
2717 error_message
= _("unsupported relocation");
2720 case bfd_reloc_dangerous
:
2721 error_message
= _("dangerous relocation");
2725 error_message
= _("unknown error");
2729 BFD_ASSERT (error_message
!= NULL
);
2730 if (!((*info
->callbacks
->reloc_dangerous
)
2731 (info
, error_message
, input_bfd
, input_section
,
2743 /* Look through the relocs for a section during the first phase, and
2744 calculate needed space in the global offset table, procedure linkage
2745 table, and dynamic reloc sections. */
2748 elf32_tic6x_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
2749 asection
*sec
, const Elf_Internal_Rela
*relocs
)
2751 struct elf32_tic6x_link_hash_table
*htab
;
2752 Elf_Internal_Shdr
*symtab_hdr
;
2753 struct elf_link_hash_entry
**sym_hashes
;
2754 const Elf_Internal_Rela
*rel
;
2755 const Elf_Internal_Rela
*rel_end
;
2758 if (info
->relocatable
)
2761 htab
= elf32_tic6x_hash_table (info
);
2762 symtab_hdr
= &elf_symtab_hdr (abfd
);
2763 sym_hashes
= elf_sym_hashes (abfd
);
2765 /* Create dynamic sections for relocatable executables so that we can
2766 copy relocations. */
2767 if ((info
->shared
|| elf32_tic6x_using_dsbt (abfd
))
2768 && ! htab
->elf
.dynamic_sections_created
)
2770 if (! _bfd_elf_link_create_dynamic_sections (abfd
, info
))
2776 rel_end
= relocs
+ sec
->reloc_count
;
2777 for (rel
= relocs
; rel
< rel_end
; rel
++)
2779 unsigned int r_type
;
2780 unsigned long r_symndx
;
2781 struct elf_link_hash_entry
*h
;
2782 Elf_Internal_Sym
*isym
;
2784 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2785 r_type
= ELF32_R_TYPE (rel
->r_info
);
2787 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
2789 (*_bfd_error_handler
) (_("%B: bad symbol index: %d"),
2795 if (r_symndx
< symtab_hdr
->sh_info
)
2797 /* A local symbol. */
2798 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
2807 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
2808 while (h
->root
.type
== bfd_link_hash_indirect
2809 || h
->root
.type
== bfd_link_hash_warning
)
2810 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2815 case R_C6000_PCR_S21
:
2816 case R_C6000_PREL31
:
2817 /* This symbol requires a procedure linkage table entry. We
2818 actually build the entry in adjust_dynamic_symbol,
2819 because this might be a case of linking PIC code which is
2820 never referenced by a dynamic object, in which case we
2821 don't need to generate a procedure linkage table entry
2824 /* If this is a local symbol, we resolve it directly without
2825 creating a procedure linkage table entry. */
2830 h
->plt
.refcount
+= 1;
2833 case R_C6000_SBR_GOT_U15_W
:
2834 case R_C6000_SBR_GOT_L16_W
:
2835 case R_C6000_SBR_GOT_H16_W
:
2836 case R_C6000_EHTYPE
:
2837 /* This symbol requires a global offset table entry. */
2840 h
->got
.refcount
+= 1;
2844 bfd_signed_vma
*local_got_refcounts
;
2846 /* This is a global offset table entry for a local symbol. */
2847 local_got_refcounts
= elf_local_got_refcounts (abfd
);
2848 if (local_got_refcounts
== NULL
)
2852 size
= symtab_hdr
->sh_info
;
2853 size
*= (sizeof (bfd_signed_vma
)
2854 + sizeof (bfd_vma
) + sizeof(char));
2855 local_got_refcounts
= bfd_zalloc (abfd
, size
);
2856 if (local_got_refcounts
== NULL
)
2858 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
2860 local_got_refcounts
[r_symndx
] += 1;
2863 if (htab
->elf
.sgot
== NULL
)
2865 if (htab
->elf
.dynobj
== NULL
)
2866 htab
->elf
.dynobj
= abfd
;
2867 if (!_bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
2872 case R_C6000_DSBT_INDEX
:
2873 /* We'd like to check for nonzero dsbt_index here, but it's
2874 set up only after check_relocs is called. Instead, we
2875 store the number of R_C6000_DSBT_INDEX relocs in the
2876 pc_count field, and potentially discard the extra space
2877 in elf32_tic6x_allocate_dynrelocs. */
2885 case R_C6000_ABS_S16
:
2886 case R_C6000_ABS_L16
:
2887 case R_C6000_ABS_H16
:
2888 /* If we are creating a shared library, and this is a reloc
2889 against a global symbol, or a non PC relative reloc
2890 against a local symbol, then we need to copy the reloc
2891 into the shared library. However, if we are linking with
2892 -Bsymbolic, we do not need to copy a reloc against a
2893 global symbol which is defined in an object we are
2894 including in the link (i.e., DEF_REGULAR is set). At
2895 this point we have not seen all the input files, so it is
2896 possible that DEF_REGULAR is not set now but will be set
2897 later (it is never cleared). In case of a weak definition,
2898 DEF_REGULAR may be cleared later by a strong definition in
2899 a shared library. We account for that possibility below by
2900 storing information in the relocs_copied field of the hash
2901 table entry. A similar situation occurs when creating
2902 shared libraries and symbol visibility changes render the
2905 If on the other hand, we are creating an executable, we
2906 may need to keep relocations for symbols satisfied by a
2907 dynamic library if we manage to avoid copy relocs for the
2909 if ((info
->shared
|| elf32_tic6x_using_dsbt (abfd
))
2910 && (sec
->flags
& SEC_ALLOC
) != 0)
2912 struct elf_dyn_relocs
*p
;
2913 struct elf_dyn_relocs
**head
;
2915 /* We must copy these reloc types into the output file.
2916 Create a reloc section in dynobj and make room for
2920 if (htab
->elf
.dynobj
== NULL
)
2921 htab
->elf
.dynobj
= abfd
;
2923 sreloc
= _bfd_elf_make_dynamic_reloc_section
2924 (sec
, htab
->elf
.dynobj
, 2, abfd
, /*rela? */ TRUE
);
2930 /* If this is a global symbol, we count the number of
2931 relocations we need for this symbol. */
2934 head
= &((struct elf32_tic6x_link_hash_entry
*) h
)->dyn_relocs
;
2938 /* Track dynamic relocs needed for local syms too.
2939 We really need local syms available to do this
2944 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
2948 vpp
= &elf_section_data (s
)->local_dynrel
;
2949 head
= (struct elf_dyn_relocs
**)vpp
;
2953 if (p
== NULL
|| p
->sec
!= sec
)
2955 bfd_size_type amt
= sizeof *p
;
2956 p
= bfd_alloc (htab
->elf
.dynobj
, amt
);
2967 if (r_type
== R_C6000_DSBT_INDEX
)
2972 case R_C6000_SBR_U15_B
:
2973 case R_C6000_SBR_U15_H
:
2974 case R_C6000_SBR_U15_W
:
2975 case R_C6000_SBR_S16
:
2976 case R_C6000_SBR_L16_B
:
2977 case R_C6000_SBR_L16_H
:
2978 case R_C6000_SBR_L16_W
:
2979 case R_C6000_SBR_H16_B
:
2980 case R_C6000_SBR_H16_H
:
2981 case R_C6000_SBR_H16_W
:
2982 if (h
!= NULL
&& info
->executable
)
2984 /* For B14-relative addresses, we might need a copy
2999 elf32_tic6x_add_symbol_hook (bfd
*abfd
,
3000 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3001 Elf_Internal_Sym
*sym
,
3002 const char **namep ATTRIBUTE_UNUSED
,
3003 flagword
*flagsp ATTRIBUTE_UNUSED
,
3007 switch (sym
->st_shndx
)
3009 case SHN_TIC6X_SCOMMON
:
3010 *secp
= bfd_make_section_old_way (abfd
, ".scommon");
3011 (*secp
)->flags
|= SEC_IS_COMMON
;
3012 *valp
= sym
->st_size
;
3013 bfd_set_section_alignment (abfd
, *secp
, bfd_log2 (sym
->st_value
));
3021 elf32_tic6x_symbol_processing (bfd
*abfd ATTRIBUTE_UNUSED
, asymbol
*asym
)
3023 elf_symbol_type
*elfsym
;
3025 elfsym
= (elf_symbol_type
*) asym
;
3026 switch (elfsym
->internal_elf_sym
.st_shndx
)
3028 case SHN_TIC6X_SCOMMON
:
3029 if (tic6x_elf_scom_section
.name
== NULL
)
3031 /* Initialize the small common section. */
3032 tic6x_elf_scom_section
.name
= ".scommon";
3033 tic6x_elf_scom_section
.flags
= SEC_IS_COMMON
;
3034 tic6x_elf_scom_section
.output_section
= &tic6x_elf_scom_section
;
3035 tic6x_elf_scom_section
.symbol
= &tic6x_elf_scom_symbol
;
3036 tic6x_elf_scom_section
.symbol_ptr_ptr
= &tic6x_elf_scom_symbol_ptr
;
3037 tic6x_elf_scom_symbol
.name
= ".scommon";
3038 tic6x_elf_scom_symbol
.flags
= BSF_SECTION_SYM
;
3039 tic6x_elf_scom_symbol
.section
= &tic6x_elf_scom_section
;
3040 tic6x_elf_scom_symbol_ptr
= &tic6x_elf_scom_symbol
;
3042 asym
->section
= &tic6x_elf_scom_section
;
3043 asym
->value
= elfsym
->internal_elf_sym
.st_size
;
3049 elf32_tic6x_link_output_symbol_hook (struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3050 const char *name ATTRIBUTE_UNUSED
,
3051 Elf_Internal_Sym
*sym
,
3052 asection
*input_sec
,
3053 struct elf_link_hash_entry
*h ATTRIBUTE_UNUSED
)
3055 /* If we see a common symbol, which implies a relocatable link, then
3056 if a symbol was small common in an input file, mark it as small
3057 common in the output file. */
3058 if (sym
->st_shndx
== SHN_COMMON
&& strcmp (input_sec
->name
, ".scommon") == 0)
3059 sym
->st_shndx
= SHN_TIC6X_SCOMMON
;
3065 elf32_tic6x_section_from_bfd_section (bfd
*abfd ATTRIBUTE_UNUSED
,
3069 if (strcmp (bfd_get_section_name (abfd
, sec
), ".scommon") == 0)
3071 *retval
= SHN_TIC6X_SCOMMON
;
3078 /* Allocate space in .plt, .got and associated reloc sections for
3082 elf32_tic6x_allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
3084 struct bfd_link_info
*info
;
3085 struct elf32_tic6x_link_hash_table
*htab
;
3086 struct elf32_tic6x_link_hash_entry
*eh
;
3087 struct elf_dyn_relocs
*p
;
3089 if (h
->root
.type
== bfd_link_hash_indirect
)
3092 if (h
->root
.type
== bfd_link_hash_warning
)
3093 /* When warning symbols are created, they **replace** the "real"
3094 entry in the hash table, thus we never get to see the real
3095 symbol in a hash traversal. So look at it now. */
3096 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3097 eh
= (struct elf32_tic6x_link_hash_entry
*) h
;
3099 info
= (struct bfd_link_info
*) inf
;
3100 htab
= elf32_tic6x_hash_table (info
);
3102 if (htab
->elf
.dynamic_sections_created
&& h
->plt
.refcount
> 0)
3104 /* Make sure this symbol is output as a dynamic symbol.
3105 Undefined weak syms won't yet be marked as dynamic. */
3106 if (h
->dynindx
== -1 && !h
->forced_local
)
3108 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
3113 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
3115 asection
*s
= htab
->elf
.splt
;
3117 /* If this is the first .plt entry, make room for the special
3120 s
->size
+= PLT_ENTRY_SIZE
;
3122 h
->plt
.offset
= s
->size
;
3124 /* If this symbol is not defined in a regular file, and we are
3125 not generating a shared library, then set the symbol to this
3126 location in the .plt. This is required to make function
3127 pointers compare as equal between the normal executable and
3128 the shared library. */
3129 if (! info
->shared
&& !h
->def_regular
)
3131 h
->root
.u
.def
.section
= s
;
3132 h
->root
.u
.def
.value
= h
->plt
.offset
;
3135 /* Make room for this entry. */
3136 s
->size
+= PLT_ENTRY_SIZE
;
3137 /* We also need to make an entry in the .got.plt section, which
3138 will be placed in the .got section by the linker script. */
3139 htab
->elf
.sgotplt
->size
+= 4;
3140 /* We also need to make an entry in the .rel.plt section. */
3141 htab
->elf
.srelplt
->size
+= sizeof (Elf32_External_Rela
);
3145 h
->plt
.offset
= (bfd_vma
) -1;
3151 h
->plt
.offset
= (bfd_vma
) -1;
3155 if (h
->got
.refcount
> 0)
3159 /* Make sure this symbol is output as a dynamic symbol.
3160 Undefined weak syms won't yet be marked as dynamic. */
3161 if (h
->dynindx
== -1
3162 && !h
->forced_local
)
3164 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
3169 h
->got
.offset
= s
->size
;
3172 if (!(ELF_ST_VISIBILITY (h
->other
)
3173 && h
->root
.type
== bfd_link_hash_undefweak
))
3174 htab
->elf
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
3177 h
->got
.offset
= (bfd_vma
) -1;
3179 if (eh
->dyn_relocs
== NULL
)
3182 /* Discard relocs on undefined weak syms with non-default
3184 if (info
->shared
|| elf32_tic6x_using_dsbt (htab
->obfd
))
3186 /* We use the pc_count field to hold the number of
3187 R_C6000_DSBT_INDEX relocs. */
3188 if (htab
->params
.dsbt_index
!= 0)
3190 struct elf_dyn_relocs
**pp
;
3192 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
3194 p
->count
-= p
->pc_count
;
3203 if (eh
->dyn_relocs
!= NULL
3204 && h
->root
.type
== bfd_link_hash_undefweak
)
3206 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
3207 eh
->dyn_relocs
= NULL
;
3209 /* Make sure undefined weak symbols are output as a dynamic
3211 else if (h
->dynindx
== -1
3212 && !h
->forced_local
)
3214 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
3220 /* Finally, allocate space. */
3221 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
3225 sreloc
= elf_section_data (p
->sec
)->sreloc
;
3227 BFD_ASSERT (sreloc
!= NULL
);
3228 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
3234 /* Find any dynamic relocs that apply to read-only sections. */
3237 elf32_tic6x_readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
3239 struct elf32_tic6x_link_hash_entry
*eh
;
3240 struct elf_dyn_relocs
*p
;
3242 if (h
->root
.type
== bfd_link_hash_warning
)
3243 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3245 eh
= (struct elf32_tic6x_link_hash_entry
*) h
;
3246 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
3248 asection
*s
= p
->sec
->output_section
;
3250 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
3252 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
3254 info
->flags
|= DF_TEXTREL
;
3256 /* Not an error, just cut short the traversal. */
3263 /* Set the sizes of the dynamic sections. */
3266 elf32_tic6x_size_dynamic_sections (bfd
*output_bfd
, struct bfd_link_info
*info
)
3268 struct elf32_tic6x_link_hash_table
*htab
;
3274 htab
= elf32_tic6x_hash_table (info
);
3275 dynobj
= htab
->elf
.dynobj
;
3279 if (htab
->elf
.dynamic_sections_created
)
3281 /* Set the contents of the .interp section to the interpreter. */
3282 if (info
->executable
)
3284 s
= bfd_get_section_by_name (dynobj
, ".interp");
3287 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
3288 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
3292 /* Set up .got offsets for local syms, and space for local dynamic
3294 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
3296 bfd_signed_vma
*local_got
;
3297 bfd_signed_vma
*end_local_got
;
3298 char *local_tls_type
;
3299 bfd_vma
*local_tlsdesc_gotent
;
3300 bfd_size_type locsymcount
;
3301 Elf_Internal_Shdr
*symtab_hdr
;
3304 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
3306 struct elf_dyn_relocs
*p
;
3308 for (p
= ((struct elf_dyn_relocs
*)
3309 elf_section_data (s
)->local_dynrel
);
3313 if (!bfd_is_abs_section (p
->sec
)
3314 && bfd_is_abs_section (p
->sec
->output_section
))
3316 /* Input section has been discarded, either because
3317 it is a copy of a linkonce section or due to
3318 linker script /DISCARD/, so we'll be discarding
3321 else if (p
->count
!= 0)
3323 srel
= elf_section_data (p
->sec
)->sreloc
;
3324 srel
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
3325 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
3326 info
->flags
|= DF_TEXTREL
;
3331 local_got
= elf_local_got_refcounts (ibfd
);
3335 symtab_hdr
= &elf_symtab_hdr (ibfd
);
3336 locsymcount
= symtab_hdr
->sh_info
;
3337 end_local_got
= local_got
+ locsymcount
;
3339 srel
= htab
->elf
.srelgot
;
3340 for (; local_got
< end_local_got
;
3341 ++local_got
, ++local_tls_type
, ++local_tlsdesc_gotent
)
3345 *local_got
= s
->size
;
3348 if (info
->shared
|| elf32_tic6x_using_dsbt (output_bfd
))
3350 srel
->size
+= sizeof (Elf32_External_Rela
);
3354 *local_got
= (bfd_vma
) -1;
3358 /* Allocate global sym .plt and .got entries, and space for global
3359 sym dynamic relocs. */
3360 elf_link_hash_traverse (&htab
->elf
, elf32_tic6x_allocate_dynrelocs
, info
);
3362 /* We now have determined the sizes of the various dynamic sections.
3363 Allocate memory for them. */
3365 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
3367 bfd_boolean strip_section
= TRUE
;
3369 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
3372 if (s
== htab
->dsbt
)
3373 s
->size
= 4 * htab
->params
.dsbt_size
;
3374 else if (s
== htab
->elf
.splt
3375 || s
== htab
->elf
.sgot
3376 || s
== htab
->elf
.sgotplt
3377 || s
== htab
->sdynbss
)
3379 /* Strip this section if we don't need it; see the
3381 /* We'd like to strip these sections if they aren't needed, but if
3382 we've exported dynamic symbols from them we must leave them.
3383 It's too late to tell BFD to get rid of the symbols. */
3385 if (htab
->elf
.hplt
!= NULL
)
3386 strip_section
= FALSE
;
3388 /* Round up the size of the PLT section to a multiple of 32. */
3389 if (s
== htab
->elf
.splt
&& s
->size
> 0)
3390 s
->size
= (s
->size
+ 31) & ~(bfd_vma
)31;
3392 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
3395 && s
!= htab
->elf
.srelplt
)
3398 /* We use the reloc_count field as a counter if we need
3399 to copy relocs into the output file. */
3404 /* It's not one of our sections, so don't allocate space. */
3410 /* If we don't need this section, strip it from the
3411 output file. This is mostly to handle .rel.bss and
3412 .rel.plt. We must create both sections in
3413 create_dynamic_sections, because they must be created
3414 before the linker maps input sections to output
3415 sections. The linker does that before
3416 adjust_dynamic_symbol is called, and it is that
3417 function which decides whether anything needs to go
3418 into these sections. */
3420 s
->flags
|= SEC_EXCLUDE
;
3424 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
3427 /* Allocate memory for the section contents. We use bfd_zalloc
3428 here in case unused entries are not reclaimed before the
3429 section's contents are written out. This should not happen,
3430 but this way if it does, we get a R_C6000_NONE reloc instead
3432 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
3433 if (s
->contents
== NULL
)
3437 if (htab
->elf
.dynamic_sections_created
)
3439 /* Add some entries to the .dynamic section. We fill in the
3440 values later, in elf32_tic6x_finish_dynamic_sections, but we
3441 must add the entries now so that we get the correct size for
3442 the .dynamic section. The DT_DEBUG entry is filled in by the
3443 dynamic linker and used by the debugger. */
3444 #define add_dynamic_entry(TAG, VAL) \
3445 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3447 if (info
->executable
)
3449 if (!add_dynamic_entry (DT_DEBUG
, 0))
3453 if (!add_dynamic_entry (DT_C6000_DSBT_BASE
, 0)
3454 || !add_dynamic_entry (DT_C6000_DSBT_SIZE
, htab
->params
.dsbt_size
)
3455 || !add_dynamic_entry (DT_C6000_DSBT_INDEX
,
3456 htab
->params
.dsbt_index
))
3459 if (htab
->elf
.splt
->size
!= 0)
3461 if (!add_dynamic_entry (DT_PLTGOT
, 0)
3462 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
3463 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
3464 || !add_dynamic_entry (DT_JMPREL
, 0))
3470 if (!add_dynamic_entry (DT_RELA
, 0)
3471 || !add_dynamic_entry (DT_RELASZ
, 0)
3472 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
3475 /* If any dynamic relocs apply to a read-only section,
3476 then we need a DT_TEXTREL entry. */
3477 if ((info
->flags
& DF_TEXTREL
) == 0)
3478 elf_link_hash_traverse (&htab
->elf
,
3479 elf32_tic6x_readonly_dynrelocs
, info
);
3481 if ((info
->flags
& DF_TEXTREL
) != 0)
3483 if (!add_dynamic_entry (DT_TEXTREL
, 0))
3488 #undef add_dynamic_entry
3493 /* This function is called after all the input files have been read,
3494 and the input sections have been assigned to output sections. */
3497 elf32_tic6x_always_size_sections (bfd
*output_bfd
, struct bfd_link_info
*info
)
3499 if (elf32_tic6x_using_dsbt (output_bfd
) && !info
->relocatable
)
3501 struct elf_link_hash_entry
*h
;
3503 /* Force a PT_GNU_STACK segment to be created. */
3504 if (! elf_tdata (output_bfd
)->stack_flags
)
3505 elf_tdata (output_bfd
)->stack_flags
= PF_R
| PF_W
| PF_X
;
3507 /* Define __stacksize if it's not defined yet. */
3508 h
= elf_link_hash_lookup (elf_hash_table (info
), "__stacksize",
3509 FALSE
, FALSE
, FALSE
);
3510 if (! h
|| h
->root
.type
!= bfd_link_hash_defined
3511 || h
->type
!= STT_OBJECT
3514 struct bfd_link_hash_entry
*bh
= NULL
;
3516 if (!(_bfd_generic_link_add_one_symbol
3517 (info
, output_bfd
, "__stacksize",
3518 BSF_GLOBAL
, bfd_abs_section_ptr
, DEFAULT_STACK_SIZE
,
3519 (const char *) NULL
, FALSE
,
3520 get_elf_backend_data (output_bfd
)->collect
, &bh
)))
3523 h
= (struct elf_link_hash_entry
*) bh
;
3525 h
->type
= STT_OBJECT
;
3532 elf32_tic6x_modify_program_headers (bfd
*output_bfd
,
3533 struct bfd_link_info
*info
)
3535 struct elf_obj_tdata
*tdata
= elf_tdata (output_bfd
);
3536 struct elf_segment_map
*m
;
3537 Elf_Internal_Phdr
*p
;
3539 /* objcopy and strip preserve what's already there using
3540 elf32_tic6x_copy_private_bfd_data (). */
3544 for (p
= tdata
->phdr
, m
= tdata
->segment_map
; m
!= NULL
; m
= m
->next
, p
++)
3545 if (m
->p_type
== PT_GNU_STACK
)
3550 struct elf_link_hash_entry
*h
;
3552 /* Obtain the pointer to the __stacksize symbol. */
3553 h
= elf_link_hash_lookup (elf_hash_table (info
), "__stacksize",
3554 FALSE
, FALSE
, FALSE
);
3557 while (h
->root
.type
== bfd_link_hash_indirect
3558 || h
->root
.type
== bfd_link_hash_warning
)
3559 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3560 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
3563 /* Set the header p_memsz from the symbol value. We
3564 intentionally ignore the symbol section. */
3565 if (h
&& h
->root
.type
== bfd_link_hash_defined
)
3566 p
->p_memsz
= h
->root
.u
.def
.value
;
3568 p
->p_memsz
= DEFAULT_STACK_SIZE
;
3577 elf32_tic6x_finish_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
3578 struct bfd_link_info
*info
)
3580 struct elf32_tic6x_link_hash_table
*htab
;
3584 htab
= elf32_tic6x_hash_table (info
);
3585 dynobj
= htab
->elf
.dynobj
;
3586 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
3588 if (elf_hash_table (info
)->dynamic_sections_created
)
3590 Elf32_External_Dyn
* dyncon
;
3591 Elf32_External_Dyn
* dynconend
;
3593 BFD_ASSERT (sdyn
!= NULL
);
3595 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
3596 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
3598 for (; dyncon
< dynconend
; dyncon
++)
3600 Elf_Internal_Dyn dyn
;
3603 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
3610 case DT_C6000_DSBT_BASE
:
3612 dyn
.d_un
.d_ptr
= (s
->output_section
->vma
+ s
->output_offset
);
3616 s
= htab
->elf
.sgotplt
;
3617 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
3621 s
= htab
->elf
.srelplt
;
3622 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
3626 s
= htab
->elf
.srelplt
;
3627 dyn
.d_un
.d_val
= s
->size
;
3630 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3633 /* Fill in the first entry in the procedure linkage table. */
3634 if (htab
->elf
.splt
&& htab
->elf
.splt
->size
> 0)
3636 bfd_vma got_offs
= (htab
->elf
.sgotplt
->output_section
->vma
3637 + htab
->elf
.sgotplt
->output_offset
3638 - htab
->dsbt
->output_section
->vma
3639 - htab
->dsbt
->output_offset
) / 4;
3641 /* ldw .D2T2 *+b14[$GOT(0)],b2 */
3642 bfd_put_32 (output_bfd
, got_offs
<< 8 | 0x0100006e,
3643 htab
->elf
.splt
->contents
);
3644 /* ldw .D2T2 *+b14[$GOT(4)],b1 */
3645 bfd_put_32 (output_bfd
, (got_offs
+ 1) << 8 | 0x0080006e,
3646 htab
->elf
.splt
->contents
+ 4);
3648 bfd_put_32 (output_bfd
, 0x00004000,
3649 htab
->elf
.splt
->contents
+ 8);
3651 bfd_put_32 (output_bfd
, 0x00080362,
3652 htab
->elf
.splt
->contents
+ 12);
3654 bfd_put_32 (output_bfd
, 0x00008000,
3655 htab
->elf
.splt
->contents
+ 16);
3657 elf_section_data (htab
->elf
.splt
->output_section
)
3658 ->this_hdr
.sh_entsize
= PLT_ENTRY_SIZE
;
3665 /* Return address for Ith PLT stub in section PLT, for relocation REL
3666 or (bfd_vma) -1 if it should not be included. */
3669 elf32_tic6x_plt_sym_val (bfd_vma i
, const asection
*plt
,
3670 const arelent
*rel ATTRIBUTE_UNUSED
)
3672 return plt
->vma
+ (i
+ 1) * PLT_ENTRY_SIZE
;
3676 elf32_tic6x_obj_attrs_arg_type (int tag
)
3678 if (tag
== Tag_ABI_compatibility
)
3679 return ATTR_TYPE_FLAG_INT_VAL
| ATTR_TYPE_FLAG_STR_VAL
;
3681 return ATTR_TYPE_FLAG_STR_VAL
;
3683 return ATTR_TYPE_FLAG_INT_VAL
;
3687 elf32_tic6x_obj_attrs_order (int num
)
3689 if (num
== LEAST_KNOWN_OBJ_ATTRIBUTE
)
3690 return Tag_ABI_conformance
;
3691 if ((num
- 1) < Tag_ABI_conformance
)
3697 elf32_tic6x_obj_attrs_handle_unknown (bfd
*abfd
, int tag
)
3699 if ((tag
& 127) < 64)
3702 (_("%B: error: unknown mandatory EABI object attribute %d"),
3704 bfd_set_error (bfd_error_bad_value
);
3710 (_("%B: warning: unknown EABI object attribute %d"),
3716 /* Merge the Tag_ISA attribute values ARCH1 and ARCH2
3717 and return the merged value. At present, all merges succeed, so no
3718 return value for errors is defined. */
3721 elf32_tic6x_merge_arch_attributes (int arch1
, int arch2
)
3723 int min_arch
, max_arch
;
3725 min_arch
= (arch1
< arch2
? arch1
: arch2
);
3726 max_arch
= (arch1
> arch2
? arch1
: arch2
);
3728 /* In most cases, the numerically greatest value is the correct
3729 merged value, but merging C64 and C67 results in C674X. */
3730 if ((min_arch
== C6XABI_Tag_ISA_C67X
3731 || min_arch
== C6XABI_Tag_ISA_C67XP
)
3732 && (max_arch
== C6XABI_Tag_ISA_C64X
3733 || max_arch
== C6XABI_Tag_ISA_C64XP
))
3734 return C6XABI_Tag_ISA_C674X
;
3739 /* Convert a Tag_ABI_array_object_alignment or
3740 Tag_ABI_array_object_align_expected tag value TAG to a
3741 corresponding alignment value; return the alignment, or -1 for an
3742 unknown tag value. */
3745 elf32_tic6x_tag_to_array_alignment (int tag
)
3763 /* Convert a Tag_ABI_array_object_alignment or
3764 Tag_ABI_array_object_align_expected alignment ALIGN to a
3765 corresponding tag value; return the tag value. */
3768 elf32_tic6x_array_alignment_to_tag (int align
)
3786 /* Merge attributes from IBFD and OBFD, returning TRUE if the merge
3787 succeeded, FALSE otherwise. */
3790 elf32_tic6x_merge_attributes (bfd
*ibfd
, bfd
*obfd
)
3792 bfd_boolean result
= TRUE
;
3793 obj_attribute
*in_attr
;
3794 obj_attribute
*out_attr
;
3796 int array_align_in
, array_align_out
, array_expect_in
, array_expect_out
;
3798 if (!elf_known_obj_attributes_proc (obfd
)[0].i
)
3800 /* This is the first object. Copy the attributes. */
3801 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
3803 out_attr
= elf_known_obj_attributes_proc (obfd
);
3805 /* Use the Tag_null value to indicate the attributes have been
3812 in_attr
= elf_known_obj_attributes_proc (ibfd
);
3813 out_attr
= elf_known_obj_attributes_proc (obfd
);
3815 /* No specification yet for handling of unknown attributes, so just
3816 ignore them and handle known ones. */
3818 if (out_attr
[Tag_ABI_stack_align_preserved
].i
3819 < in_attr
[Tag_ABI_stack_align_needed
].i
)
3822 (_("error: %B requires more stack alignment than %B preserves"),
3826 if (in_attr
[Tag_ABI_stack_align_preserved
].i
3827 < out_attr
[Tag_ABI_stack_align_needed
].i
)
3830 (_("error: %B requires more stack alignment than %B preserves"),
3835 array_align_in
= elf32_tic6x_tag_to_array_alignment
3836 (in_attr
[Tag_ABI_array_object_alignment
].i
);
3837 if (array_align_in
== -1)
3840 (_("error: unknown Tag_ABI_array_object_alignment value in %B"),
3844 array_align_out
= elf32_tic6x_tag_to_array_alignment
3845 (out_attr
[Tag_ABI_array_object_alignment
].i
);
3846 if (array_align_out
== -1)
3849 (_("error: unknown Tag_ABI_array_object_alignment value in %B"),
3853 array_expect_in
= elf32_tic6x_tag_to_array_alignment
3854 (in_attr
[Tag_ABI_array_object_align_expected
].i
);
3855 if (array_expect_in
== -1)
3858 (_("error: unknown Tag_ABI_array_object_align_expected value in %B"),
3862 array_expect_out
= elf32_tic6x_tag_to_array_alignment
3863 (out_attr
[Tag_ABI_array_object_align_expected
].i
);
3864 if (array_expect_out
== -1)
3867 (_("error: unknown Tag_ABI_array_object_align_expected value in %B"),
3872 if (array_align_out
< array_expect_in
)
3875 (_("error: %B requires more array alignment than %B preserves"),
3879 if (array_align_in
< array_expect_out
)
3882 (_("error: %B requires more array alignment than %B preserves"),
3887 for (i
= LEAST_KNOWN_OBJ_ATTRIBUTE
; i
< NUM_KNOWN_OBJ_ATTRIBUTES
; i
++)
3892 out_attr
[i
].i
= elf32_tic6x_merge_arch_attributes (in_attr
[i
].i
,
3896 case Tag_ABI_wchar_t
:
3897 if (out_attr
[i
].i
== 0)
3898 out_attr
[i
].i
= in_attr
[i
].i
;
3899 if (out_attr
[i
].i
!= 0
3900 && in_attr
[i
].i
!= 0
3901 && out_attr
[i
].i
!= in_attr
[i
].i
)
3904 (_("warning: %B and %B differ in wchar_t size"), obfd
, ibfd
);
3908 case Tag_ABI_stack_align_needed
:
3909 if (out_attr
[i
].i
< in_attr
[i
].i
)
3910 out_attr
[i
].i
= in_attr
[i
].i
;
3913 case Tag_ABI_stack_align_preserved
:
3914 if (out_attr
[i
].i
> in_attr
[i
].i
)
3915 out_attr
[i
].i
= in_attr
[i
].i
;
3919 if (out_attr
[i
].i
!= in_attr
[i
].i
)
3922 (_("warning: %B and %B differ in whether code is "
3923 "compiled for DSBT"),
3930 if (out_attr
[i
].i
> in_attr
[i
].i
)
3931 out_attr
[i
].i
= in_attr
[i
].i
;
3934 case Tag_ABI_array_object_alignment
:
3935 if (array_align_out
!= -1
3936 && array_align_in
!= -1
3937 && array_align_out
> array_align_in
)
3939 = elf32_tic6x_array_alignment_to_tag (array_align_in
);
3942 case Tag_ABI_array_object_align_expected
:
3943 if (array_expect_out
!= -1
3944 && array_expect_in
!= -1
3945 && array_expect_out
< array_expect_in
)
3947 = elf32_tic6x_array_alignment_to_tag (array_expect_in
);
3950 case Tag_ABI_conformance
:
3951 /* Merging for this attribute is not specified. As on ARM,
3952 treat a missing attribute as no claim to conform and only
3953 merge identical values. */
3954 if (out_attr
[i
].s
== NULL
3955 || in_attr
[i
].s
== NULL
3956 || strcmp (out_attr
[i
].s
,
3958 out_attr
[i
].s
= NULL
;
3961 case Tag_ABI_compatibility
:
3962 /* Merged in _bfd_elf_merge_object_attributes. */
3967 = result
&& _bfd_elf_merge_unknown_attribute_low (ibfd
, obfd
, i
);
3971 if (in_attr
[i
].type
&& !out_attr
[i
].type
)
3972 out_attr
[i
].type
= in_attr
[i
].type
;
3975 /* Merge Tag_ABI_compatibility attributes and any common GNU ones. */
3976 if (!_bfd_elf_merge_object_attributes (ibfd
, obfd
))
3979 result
&= _bfd_elf_merge_unknown_attribute_list (ibfd
, obfd
);
3985 elf32_tic6x_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
3987 if (!_bfd_generic_verify_endian_match (ibfd
, obfd
))
3990 if (!elf32_tic6x_merge_attributes (ibfd
, obfd
))
3997 elf32_tic6x_copy_private_data (bfd
* ibfd
, bfd
* obfd
)
3999 _bfd_elf_copy_private_bfd_data (ibfd
, obfd
);
4001 if (! is_tic6x_elf (ibfd
) || ! is_tic6x_elf (obfd
))
4004 /* Copy the stack size. */
4005 if (elf_tdata (ibfd
)->phdr
&& elf_tdata (obfd
)->phdr
4006 && elf32_tic6x_using_dsbt (ibfd
) && elf32_tic6x_using_dsbt (obfd
))
4010 for (i
= 0; i
< elf_elfheader (ibfd
)->e_phnum
; i
++)
4011 if (elf_tdata (ibfd
)->phdr
[i
].p_type
== PT_GNU_STACK
)
4013 Elf_Internal_Phdr
*iphdr
= &elf_tdata (ibfd
)->phdr
[i
];
4015 for (i
= 0; i
< elf_elfheader (obfd
)->e_phnum
; i
++)
4016 if (elf_tdata (obfd
)->phdr
[i
].p_type
== PT_GNU_STACK
)
4018 memcpy (&elf_tdata (obfd
)->phdr
[i
], iphdr
, sizeof (*iphdr
));
4020 /* Rewrite the phdrs, since we're only called after they
4021 were first written. */
4023 (bfd_signed_vma
) get_elf_backend_data (obfd
)
4024 ->s
->sizeof_ehdr
, SEEK_SET
) != 0
4025 || get_elf_backend_data (obfd
)->s
4026 ->write_out_phdrs (obfd
, elf_tdata (obfd
)->phdr
,
4027 elf_elfheader (obfd
)->e_phnum
) != 0)
4039 /* Add a new unwind edit to the list described by HEAD, TAIL. If TINDEX is zero,
4040 adds the edit to the start of the list. (The list must be built in order of
4041 ascending TINDEX: the function's callers are primarily responsible for
4042 maintaining that condition). */
4045 elf32_tic6x_add_unwind_table_edit (tic6x_unwind_table_edit
**head
,
4046 tic6x_unwind_table_edit
**tail
,
4047 tic6x_unwind_edit_type type
,
4048 asection
*linked_section
,
4049 unsigned int tindex
)
4051 tic6x_unwind_table_edit
*new_edit
= (tic6x_unwind_table_edit
*)
4052 xmalloc (sizeof (tic6x_unwind_table_edit
));
4054 new_edit
->type
= type
;
4055 new_edit
->linked_section
= linked_section
;
4056 new_edit
->index
= tindex
;
4060 new_edit
->next
= NULL
;
4063 (*tail
)->next
= new_edit
;
4072 new_edit
->next
= *head
;
4081 static _tic6x_elf_section_data
*
4082 get_tic6x_elf_section_data (asection
* sec
)
4084 if (sec
&& sec
->owner
&& is_tic6x_elf (sec
->owner
))
4085 return elf32_tic6x_section_data (sec
);
4091 /* Increase the size of EXIDX_SEC by ADJUST bytes. ADJUST must be negative. */
4093 elf32_tic6x_adjust_exidx_size (asection
*exidx_sec
, int adjust
)
4097 if (!exidx_sec
->rawsize
)
4098 exidx_sec
->rawsize
= exidx_sec
->size
;
4100 bfd_set_section_size (exidx_sec
->owner
, exidx_sec
, exidx_sec
->size
+ adjust
);
4101 out_sec
= exidx_sec
->output_section
;
4102 /* Adjust size of output section. */
4103 bfd_set_section_size (out_sec
->owner
, out_sec
, out_sec
->size
+adjust
);
4106 /* Insert an EXIDX_CANTUNWIND marker at the end of a section. */
4108 elf32_tic6x_insert_cantunwind_after (asection
*text_sec
, asection
*exidx_sec
)
4110 struct _tic6x_elf_section_data
*exidx_data
;
4112 exidx_data
= get_tic6x_elf_section_data (exidx_sec
);
4113 elf32_tic6x_add_unwind_table_edit (
4114 &exidx_data
->u
.exidx
.unwind_edit_list
,
4115 &exidx_data
->u
.exidx
.unwind_edit_tail
,
4116 INSERT_EXIDX_CANTUNWIND_AT_END
, text_sec
, UINT_MAX
);
4118 elf32_tic6x_adjust_exidx_size (exidx_sec
, 8);
4121 /* Scan .cx6abi.exidx tables, and create a list describing edits which
4122 should be made to those tables, such that:
4124 1. Regions without unwind data are marked with EXIDX_CANTUNWIND entries.
4125 2. Duplicate entries are merged together (EXIDX_CANTUNWIND, or unwind
4126 codes which have been inlined into the index).
4128 If MERGE_EXIDX_ENTRIES is false, duplicate entries are not merged.
4130 The edits are applied when the tables are written
4131 (in elf32_tic6x_write_section).
4135 elf32_tic6x_fix_exidx_coverage (asection
**text_section_order
,
4136 unsigned int num_text_sections
,
4137 struct bfd_link_info
*info
,
4138 bfd_boolean merge_exidx_entries
)
4141 unsigned int last_second_word
= 0, i
;
4142 asection
*last_exidx_sec
= NULL
;
4143 asection
*last_text_sec
= NULL
;
4144 int last_unwind_type
= -1;
4146 /* Walk over all EXIDX sections, and create backlinks from the corrsponding
4148 for (inp
= info
->input_bfds
; inp
!= NULL
; inp
= inp
->link_next
)
4152 for (sec
= inp
->sections
; sec
!= NULL
; sec
= sec
->next
)
4154 struct bfd_elf_section_data
*elf_sec
= elf_section_data (sec
);
4155 Elf_Internal_Shdr
*hdr
= &elf_sec
->this_hdr
;
4157 if (!hdr
|| hdr
->sh_type
!= SHT_C6000_UNWIND
)
4160 if (elf_sec
->linked_to
)
4162 Elf_Internal_Shdr
*linked_hdr
4163 = &elf_section_data (elf_sec
->linked_to
)->this_hdr
;
4164 struct _tic6x_elf_section_data
*linked_sec_tic6x_data
4165 = get_tic6x_elf_section_data (linked_hdr
->bfd_section
);
4167 if (linked_sec_tic6x_data
== NULL
)
4170 /* Link this .c6xabi.exidx section back from the
4171 text section it describes. */
4172 linked_sec_tic6x_data
->u
.text
.tic6x_exidx_sec
= sec
;
4177 /* Walk all text sections in order of increasing VMA. Eilminate duplicate
4178 index table entries (EXIDX_CANTUNWIND and inlined unwind opcodes),
4179 and add EXIDX_CANTUNWIND entries for sections with no unwind table data. */
4181 for (i
= 0; i
< num_text_sections
; i
++)
4183 asection
*sec
= text_section_order
[i
];
4184 asection
*exidx_sec
;
4185 struct _tic6x_elf_section_data
*tic6x_data
4186 = get_tic6x_elf_section_data (sec
);
4187 struct _tic6x_elf_section_data
*exidx_data
;
4188 bfd_byte
*contents
= NULL
;
4189 int deleted_exidx_bytes
= 0;
4191 tic6x_unwind_table_edit
*unwind_edit_head
= NULL
;
4192 tic6x_unwind_table_edit
*unwind_edit_tail
= NULL
;
4193 Elf_Internal_Shdr
*hdr
;
4196 if (tic6x_data
== NULL
)
4199 exidx_sec
= tic6x_data
->u
.text
.tic6x_exidx_sec
;
4200 if (exidx_sec
== NULL
)
4202 /* Section has no unwind data. */
4203 if (last_unwind_type
== 0 || !last_exidx_sec
)
4206 /* Ignore zero sized sections. */
4210 elf32_tic6x_insert_cantunwind_after (last_text_sec
, last_exidx_sec
);
4211 last_unwind_type
= 0;
4215 /* Skip /DISCARD/ sections. */
4216 if (bfd_is_abs_section (exidx_sec
->output_section
))
4219 hdr
= &elf_section_data (exidx_sec
)->this_hdr
;
4220 if (hdr
->sh_type
!= SHT_C6000_UNWIND
)
4223 exidx_data
= get_tic6x_elf_section_data (exidx_sec
);
4224 if (exidx_data
== NULL
)
4227 ibfd
= exidx_sec
->owner
;
4229 if (hdr
->contents
!= NULL
)
4230 contents
= hdr
->contents
;
4231 else if (! bfd_malloc_and_get_section (ibfd
, exidx_sec
, &contents
))
4235 for (j
= 0; j
< hdr
->sh_size
; j
+= 8)
4237 unsigned int second_word
= bfd_get_32 (ibfd
, contents
+ j
+ 4);
4241 /* An EXIDX_CANTUNWIND entry. */
4242 if (second_word
== 1)
4244 if (last_unwind_type
== 0)
4248 /* Inlined unwinding data. Merge if equal to previous. */
4249 else if ((second_word
& 0x80000000) != 0)
4251 if (merge_exidx_entries
4252 && last_second_word
== second_word
4253 && last_unwind_type
== 1)
4256 last_second_word
= second_word
;
4258 /* Normal table entry. In theory we could merge these too,
4259 but duplicate entries are likely to be much less common. */
4265 elf32_tic6x_add_unwind_table_edit (&unwind_edit_head
,
4266 &unwind_edit_tail
, DELETE_EXIDX_ENTRY
, NULL
, j
/ 8);
4268 deleted_exidx_bytes
+= 8;
4271 last_unwind_type
= unwind_type
;
4274 /* Free contents if we allocated it ourselves. */
4275 if (contents
!= hdr
->contents
)
4278 /* Record edits to be applied later (in elf32_tic6x_write_section). */
4279 exidx_data
->u
.exidx
.unwind_edit_list
= unwind_edit_head
;
4280 exidx_data
->u
.exidx
.unwind_edit_tail
= unwind_edit_tail
;
4282 if (deleted_exidx_bytes
> 0)
4283 elf32_tic6x_adjust_exidx_size (exidx_sec
, -deleted_exidx_bytes
);
4285 last_exidx_sec
= exidx_sec
;
4286 last_text_sec
= sec
;
4289 /* Add terminating CANTUNWIND entry. */
4290 if (last_exidx_sec
&& last_unwind_type
!= 0)
4291 elf32_tic6x_insert_cantunwind_after (last_text_sec
, last_exidx_sec
);
4296 /* Add ADDEND to lower 31 bits of VAL, leaving other bits unmodified. */
4298 static unsigned long
4299 elf32_tic6x_add_low31 (unsigned long val
, bfd_vma addend
)
4301 return (val
& ~0x7ffffffful
) | ((val
+ addend
) & 0x7ffffffful
);
4304 /* Copy an .c6xabi.exidx table entry, adding OFFSET to (applied) PREL31
4305 relocations. OFFSET is in bytes, and will be scaled before encoding. */
4309 elf32_tic6x_copy_exidx_entry (bfd
*output_bfd
, bfd_byte
*to
, bfd_byte
*from
,
4312 unsigned long first_word
= bfd_get_32 (output_bfd
, from
);
4313 unsigned long second_word
= bfd_get_32 (output_bfd
, from
+ 4);
4316 /* High bit of first word is supposed to be zero. */
4317 if ((first_word
& 0x80000000ul
) == 0)
4318 first_word
= elf32_tic6x_add_low31 (first_word
, offset
);
4320 /* If the high bit of the first word is clear, and the bit pattern is not 0x1
4321 (EXIDX_CANTUNWIND), this is an offset to an .c6xabi.extab entry. */
4322 if ((second_word
!= 0x1) && ((second_word
& 0x80000000ul
) == 0))
4323 second_word
= elf32_tic6x_add_low31 (second_word
, offset
);
4325 bfd_put_32 (output_bfd
, first_word
, to
);
4326 bfd_put_32 (output_bfd
, second_word
, to
+ 4);
4329 /* Do the actual mangling of exception index tables. */
4332 elf32_tic6x_write_section (bfd
*output_bfd
,
4333 struct bfd_link_info
*link_info
,
4337 _tic6x_elf_section_data
*tic6x_data
;
4338 struct elf32_tic6x_link_hash_table
*globals
4339 = elf32_tic6x_hash_table (link_info
);
4340 bfd_vma offset
= sec
->output_section
->vma
+ sec
->output_offset
;
4342 if (globals
== NULL
)
4345 /* If this section has not been allocated an _tic6x_elf_section_data
4346 structure then we cannot record anything. */
4347 tic6x_data
= get_tic6x_elf_section_data (sec
);
4348 if (tic6x_data
== NULL
)
4351 if (tic6x_data
->elf
.this_hdr
.sh_type
!= SHT_C6000_UNWIND
)
4354 tic6x_unwind_table_edit
*edit_node
4355 = tic6x_data
->u
.exidx
.unwind_edit_list
;
4356 /* Now, sec->size is the size of the section we will write. The original
4357 size (before we merged duplicate entries and inserted EXIDX_CANTUNWIND
4358 markers) was sec->rawsize. (This isn't the case if we perform no
4359 edits, then rawsize will be zero and we should use size). */
4360 bfd_byte
*edited_contents
= (bfd_byte
*) bfd_malloc (sec
->size
);
4361 unsigned int input_size
= sec
->rawsize
? sec
->rawsize
: sec
->size
;
4362 unsigned int in_index
, out_index
;
4363 bfd_vma add_to_offsets
= 0;
4365 for (in_index
= 0, out_index
= 0; in_index
* 8 < input_size
|| edit_node
;)
4369 unsigned int edit_index
= edit_node
->index
;
4371 if (in_index
< edit_index
&& in_index
* 8 < input_size
)
4373 elf32_tic6x_copy_exidx_entry (output_bfd
,
4374 edited_contents
+ out_index
* 8,
4375 contents
+ in_index
* 8, add_to_offsets
);
4379 else if (in_index
== edit_index
4380 || (in_index
* 8 >= input_size
4381 && edit_index
== UINT_MAX
))
4383 switch (edit_node
->type
)
4385 case DELETE_EXIDX_ENTRY
:
4387 add_to_offsets
+= 8;
4390 case INSERT_EXIDX_CANTUNWIND_AT_END
:
4392 asection
*text_sec
= edit_node
->linked_section
;
4393 bfd_vma text_offset
= text_sec
->output_section
->vma
4394 + text_sec
->output_offset
4396 bfd_vma exidx_offset
= offset
+ out_index
* 8;
4397 unsigned long prel31_offset
;
4399 /* Note: this is meant to be equivalent to an
4400 R_C6000_PREL31 relocation. These synthetic
4401 EXIDX_CANTUNWIND markers are not relocated by the
4402 usual BFD method. */
4403 prel31_offset
= ((text_offset
- exidx_offset
) >> 1)
4406 /* First address we can't unwind. */
4407 bfd_put_32 (output_bfd
, prel31_offset
,
4408 &edited_contents
[out_index
* 8]);
4410 /* Code for EXIDX_CANTUNWIND. */
4411 bfd_put_32 (output_bfd
, 0x1,
4412 &edited_contents
[out_index
* 8 + 4]);
4415 add_to_offsets
-= 8;
4420 edit_node
= edit_node
->next
;
4425 /* No more edits, copy remaining entries verbatim. */
4426 elf32_tic6x_copy_exidx_entry (output_bfd
,
4427 edited_contents
+ out_index
* 8,
4428 contents
+ in_index
* 8, add_to_offsets
);
4434 if (!(sec
->flags
& SEC_EXCLUDE
) && !(sec
->flags
& SEC_NEVER_LOAD
))
4435 bfd_set_section_contents (output_bfd
, sec
->output_section
,
4437 (file_ptr
) sec
->output_offset
, sec
->size
);
4443 elf32_tic6x_set_osabi (bfd
*abfd
, struct bfd_link_info
*link_info
)
4445 if (link_info
== NULL
|| link_info
->relocatable
)
4447 _bfd_elf_set_osabi (abfd
, link_info
);
4450 #define TARGET_LITTLE_SYM bfd_elf32_tic6x_le_vec
4451 #define TARGET_LITTLE_NAME "elf32-tic6x-le"
4452 #define TARGET_BIG_SYM bfd_elf32_tic6x_be_vec
4453 #define TARGET_BIG_NAME "elf32-tic6x-be"
4454 #define ELF_ARCH bfd_arch_tic6x
4455 #define ELF_TARGET_ID TIC6X_ELF_DATA
4456 #define ELF_MACHINE_CODE EM_TI_C6000
4457 #define ELF_MAXPAGESIZE 0x1000
4458 #define bfd_elf32_bfd_reloc_type_lookup elf32_tic6x_reloc_type_lookup
4459 #define bfd_elf32_bfd_reloc_name_lookup elf32_tic6x_reloc_name_lookup
4460 #define bfd_elf32_bfd_copy_private_bfd_data elf32_tic6x_copy_private_data
4461 #define bfd_elf32_bfd_merge_private_bfd_data elf32_tic6x_merge_private_bfd_data
4462 #define bfd_elf32_mkobject elf32_tic6x_mkobject
4463 #define bfd_elf32_bfd_link_hash_table_create elf32_tic6x_link_hash_table_create
4464 #define bfd_elf32_bfd_link_hash_table_free elf32_tic6x_link_hash_table_free
4465 #define bfd_elf32_new_section_hook elf32_tic6x_new_section_hook
4466 #define elf_backend_can_gc_sections 1
4467 #define elf_backend_default_use_rela_p 1
4468 #define elf_backend_may_use_rel_p 1
4469 #define elf_backend_may_use_rela_p 1
4470 #define elf_backend_obj_attrs_arg_type elf32_tic6x_obj_attrs_arg_type
4471 #define elf_backend_obj_attrs_handle_unknown elf32_tic6x_obj_attrs_handle_unknown
4472 #define elf_backend_obj_attrs_order elf32_tic6x_obj_attrs_order
4473 #define elf_backend_obj_attrs_section ".c6xabi.attributes"
4474 #define elf_backend_obj_attrs_section_type SHT_C6000_ATTRIBUTES
4475 #define elf_backend_obj_attrs_vendor "c6xabi"
4476 #define elf_backend_can_refcount 1
4477 #define elf_backend_want_got_plt 1
4478 #define elf_backend_want_dynbss 1
4479 #define elf_backend_plt_readonly 1
4480 #define elf_backend_rela_normal 1
4481 #define elf_backend_got_header_size 8
4482 #define elf_backend_fake_sections elf32_tic6x_fake_sections
4483 #define elf_backend_gc_sweep_hook elf32_tic6x_gc_sweep_hook
4484 #define elf_backend_gc_mark_extra_sections elf32_tic6x_gc_mark_extra_sections
4485 #define elf_backend_modify_program_headers \
4486 elf32_tic6x_modify_program_headers
4487 #define elf_backend_create_dynamic_sections \
4488 elf32_tic6x_create_dynamic_sections
4489 #define elf_backend_adjust_dynamic_symbol \
4490 elf32_tic6x_adjust_dynamic_symbol
4491 #define elf_backend_check_relocs elf32_tic6x_check_relocs
4492 #define elf_backend_add_symbol_hook elf32_tic6x_add_symbol_hook
4493 #define elf_backend_symbol_processing elf32_tic6x_symbol_processing
4494 #define elf_backend_link_output_symbol_hook \
4495 elf32_tic6x_link_output_symbol_hook
4496 #define elf_backend_section_from_bfd_section \
4497 elf32_tic6x_section_from_bfd_section
4498 #define elf_backend_relocate_section elf32_tic6x_relocate_section
4499 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
4500 #define elf_backend_finish_dynamic_symbol \
4501 elf32_tic6x_finish_dynamic_symbol
4502 #define elf_backend_always_size_sections \
4503 elf32_tic6x_always_size_sections
4504 #define elf_backend_size_dynamic_sections \
4505 elf32_tic6x_size_dynamic_sections
4506 #define elf_backend_finish_dynamic_sections \
4507 elf32_tic6x_finish_dynamic_sections
4508 #define bfd_elf32_bfd_final_link \
4509 elf32_tic6x_final_link
4510 #define elf_backend_write_section elf32_tic6x_write_section
4511 #define elf_info_to_howto elf32_tic6x_info_to_howto
4512 #define elf_info_to_howto_rel elf32_tic6x_info_to_howto_rel
4514 #undef elf_backend_omit_section_dynsym
4515 #define elf_backend_omit_section_dynsym elf32_tic6x_link_omit_section_dynsym
4516 #define elf_backend_plt_sym_val elf32_tic6x_plt_sym_val
4518 #include "elf32-target.h"
4521 #define elf32_bed elf32_tic6x_linux_bed
4523 #undef TARGET_LITTLE_SYM
4524 #define TARGET_LITTLE_SYM bfd_elf32_tic6x_linux_le_vec
4525 #undef TARGET_LITTLE_NAME
4526 #define TARGET_LITTLE_NAME "elf32-tic6x-linux-le"
4527 #undef TARGET_BIG_SYM
4528 #define TARGET_BIG_SYM bfd_elf32_tic6x_linux_be_vec
4529 #undef TARGET_BIG_NAME
4530 #define TARGET_BIG_NAME "elf32-tic6x-linux-be"
4532 #define ELF_OSABI ELFOSABI_C6000_LINUX
4534 #undef elf_backend_post_process_headers
4535 #define elf_backend_post_process_headers elf32_tic6x_set_osabi
4537 #include "elf32-target.h"
4540 #define elf32_bed elf32_tic6x_elf_bed
4542 #undef TARGET_LITTLE_SYM
4543 #define TARGET_LITTLE_SYM bfd_elf32_tic6x_elf_le_vec
4544 #undef TARGET_LITTLE_NAME
4545 #define TARGET_LITTLE_NAME "elf32-tic6x-elf-le"
4546 #undef TARGET_BIG_SYM
4547 #define TARGET_BIG_SYM bfd_elf32_tic6x_elf_be_vec
4548 #undef TARGET_BIG_NAME
4549 #define TARGET_BIG_NAME "elf32-tic6x-elf-be"
4551 #define ELF_OSABI ELFOSABI_C6000_ELFABI
4553 #undef elf_backend_post_process_headers
4554 #define elf_backend_post_process_headers elf32_tic6x_set_osabi
4556 #include "elf32-target.h"