1 /* 32-bit ELF support for C-SKY.
2 Copyright (C) 1998-2020 Free Software Foundation, Inc.
3 Contributed by C-SKY Microsystems and Mentor Graphics.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
28 #include "opcode/csky.h"
30 #include "libiberty.h"
31 #include "elf32-csky.h"
33 /* Data structures used for merging different arch variants.
34 V1 (510/610) and V2 (8xx) processors are incompatible, but
35 we can merge wthin each family. */
43 typedef struct csky_arch_for_merge
46 const unsigned long arch_eflag
;
47 /* The files can merge only if they are in same class. */
48 enum merge_class
class;
49 /* When input files have different levels,
50 the target sets arch_eflag to the largest level file's arch_eflag. */
51 unsigned int class_level
;
52 /* Control whether to print warning when merging with different arch. */
53 unsigned int do_warning
;
54 } csky_arch_for_merge
;
56 static struct csky_arch_for_merge csky_archs
[] =
58 /* 510 and 610 merge to 610 without warning. */
59 { "510", CSKY_ARCH_510
, CSKY_V1
, 0, 0},
60 { "610", CSKY_ARCH_610
, CSKY_V1
, 1, 0},
61 /* 801, 802, 803, 807, 810 merge to largest one. */
62 { "801", CSKY_ARCH_801
, CSKY_V2
, 0, 1},
63 { "802", CSKY_ARCH_802
, CSKY_V2
, 1, 1},
64 { "803", CSKY_ARCH_803
, CSKY_V2
, 2, 1},
65 { "807", CSKY_ARCH_807
, CSKY_V2
, 3, 1},
66 { "810", CSKY_ARCH_810
, CSKY_V2
, 4, 1},
70 /* Return the ARCH bits out of ABFD. */
71 #define bfd_csky_arch(abfd) \
72 (elf_elfheader (abfd)->e_flags & CSKY_ARCH_MASK)
74 /* Return the ABI bits out of ABFD. */
75 #define bfd_csky_abi(abfd) \
76 (elf_elfheader (abfd)->e_flags & CSKY_ABI_MASK)
79 /* The index of a howto-item is implicitly equal to
80 the corresponding Relocation Type Encoding. */
81 static reloc_howto_type csky_elf_howto_table
[] =
84 HOWTO (R_CKCORE_NONE
, /* type */
88 FALSE
, /* pc_relative */
90 complain_overflow_dont
, /* complain_on_overflow */
91 NULL
, /* special_function */
92 "R_CKCORE_NONE", /* name */
93 FALSE
, /* partial_inplace */
96 FALSE
), /* pcrel_offset */
99 HOWTO (R_CKCORE_ADDR32
, /* type */
103 FALSE
, /* pc_relative */
105 complain_overflow_dont
, /* complain_on_overflow */
106 bfd_elf_generic_reloc
, /* special_function */
107 "R_CKCORE_ADDR32", /* name */
108 FALSE
, /* partial_inplace */
110 0xffffffff, /* dst_mask */
111 FALSE
), /* pcrel_offset */
113 /* 2: Only for csky v1. */
114 HOWTO (R_CKCORE_PCREL_IMM8BY4
, /* type */
118 TRUE
, /* pc_relative */
120 complain_overflow_bitfield
, /* complain_on_overflow */
121 NULL
, /* special_function */
122 "R_CKCORE_PCREL_IMM8BY4", /* name */
123 FALSE
, /* partial_inplace */
126 TRUE
), /* pcrel_offset */
128 /* 3: Only for csky v1. */
129 HOWTO (R_CKCORE_PCREL_IMM11BY2
, /* type */
133 TRUE
, /* pc_relative */
135 complain_overflow_signed
, /* complain_on_overflow */
136 bfd_elf_generic_reloc
, /* special_function */
137 "R_CKCORE_PCREL_IMM11BY2", /* name */
138 FALSE
, /* partial_inplace */
139 0x7ff, /* src_mask */
140 0x7ff, /* dst_mask */
141 TRUE
), /* pcrel_offset */
144 HOWTO (R_CKCORE_PCREL_IMM4BY2
,0,0,0,0,0,0,0,"R_CKCORE_PCREL_IMM4BY2",0,0,0,0),
147 HOWTO (R_CKCORE_PCREL32
, /* type */
151 TRUE
, /* pc_relative */
153 complain_overflow_dont
, /* complain_on_overflow */
154 bfd_elf_generic_reloc
, /* special_function */
155 "R_CKCORE_PCREL32", /* name */
156 FALSE
, /* partial_inplace */
158 0xffffffff, /* dst_mask */
159 TRUE
), /* pcrel_offset */
161 /* 6: Only for csky v1. */
162 HOWTO (R_CKCORE_PCREL_JSR_IMM11BY2
, /* type */
166 TRUE
, /* pc_relative */
168 complain_overflow_signed
, /* complain_on_overflow */
169 bfd_elf_generic_reloc
, /* special_function */
170 "R_CKCORE_PCREL_JSR_IMM11BY2", /* name */
171 FALSE
, /* partial_inplace */
172 0x7ff, /* src_mask */
173 0x7ff, /* dst_mask */
174 TRUE
), /* pcrel_offset */
176 /* 7: GNU extension to record C++ vtable member usage. */
177 HOWTO (R_CKCORE_GNU_VTENTRY
, /* type */
181 FALSE
, /* pc_relative */
183 complain_overflow_dont
, /* complain_on_overflow */
184 _bfd_elf_rel_vtable_reloc_fn
, /* special_function */
185 "R_CKCORE_GNU_VTENTRY", /* name */
186 FALSE
, /* partial_inplace */
189 FALSE
), /* pcrel_offset */
191 /* 8: GNU extension to record C++ vtable hierarchy. */
192 HOWTO (R_CKCORE_GNU_VTINHERIT
, /* type */
196 FALSE
, /* pc_relative */
198 complain_overflow_dont
, /* complain_on_overflow */
199 NULL
, /* special_function */
200 "R_CKCORE_GNU_VTINHERIT", /* name */
201 FALSE
, /* partial_inplace */
204 FALSE
), /* pcrel_offset */
207 HOWTO (R_CKCORE_RELATIVE
, /* type */
211 FALSE
, /* pc_relative */
213 complain_overflow_signed
, /* complain_on_overflow */
214 bfd_elf_generic_reloc
, /* special_function */
215 "R_CKCORE_RELATIVE", /* name */
216 TRUE
, /* partial_inplace */
218 0xffffffff, /* dst_mask */
219 FALSE
), /* pcrel_offset */
222 /* FIXME: It is a bug that copy relocations are not implemented. */
223 HOWTO (R_CKCORE_COPY
, /* type */
227 FALSE
, /* pc_relative */
229 complain_overflow_bitfield
, /* complain_on_overflow */
230 bfd_elf_generic_reloc
, /* special_function */
231 "R_CKCORE_COPY", /* name */
232 TRUE
, /* partial_inplace */
233 0xffffffff, /* src_mask */
234 0xffffffff, /* dst_mask */
235 FALSE
), /* pcrel_offset */
238 HOWTO (R_CKCORE_GLOB_DAT
,0,0,0,0,0,0,0,"R_CKCORE_GLOB_DAT",0,0,0,0),
241 HOWTO (R_CKCORE_JUMP_SLOT
,0,0,0,0,0,0,0,"R_CKCORE_JUMP_SLOT",0,0,0,0),
244 HOWTO (R_CKCORE_GOTOFF
, /* type */
248 FALSE
, /* pc_relative */
250 complain_overflow_dont
, /* complain_on_overflow */
251 bfd_elf_generic_reloc
, /* special_function */
252 "R_CKCORE_GOTOFF", /* name */
253 TRUE
, /* partial_inplace */
255 0xffffffffl
, /* dst_mask */
256 FALSE
), /* pcrel_offset */
259 HOWTO (R_CKCORE_GOTPC
, /* type */
263 TRUE
, /* pc_relative */
265 complain_overflow_dont
, /* complain_on_overflow */
266 bfd_elf_generic_reloc
, /* special_function */
267 "R_CKCORE_GOTPC", /* name */
268 TRUE
, /* partial_inplace */
270 0xffffffff, /* dst_mask */
271 FALSE
), /* pcrel_offset */
274 HOWTO (R_CKCORE_GOT32
, /* type */
278 FALSE
, /* pc_relative */
280 complain_overflow_dont
, /* complain_on_overflow */
281 bfd_elf_generic_reloc
, /* special_function */
282 "R_CKCORE_GOT32", /* name */
283 TRUE
, /* partial_inplace */
285 0xffffffff, /* dst_mask */
286 TRUE
), /* pcrel_offset */
289 HOWTO (R_CKCORE_PLT32
, /* type */
293 FALSE
, /* pc_relative */
295 complain_overflow_dont
, /* complain_on_overflow */
296 bfd_elf_generic_reloc
, /* special_function */
297 "R_CKCORE_PLT32", /* name */
298 TRUE
, /* partial_inplace */
300 0xffffffff, /* dst_mask */
301 TRUE
), /* pcrel_offset */
304 HOWTO (R_CKCORE_ADDRGOT
,0,0,0,0,0,0,0,"R_CKCORE_ADDRGOT",0,0,0,0),
307 HOWTO (R_CKCORE_ADDRPLT
,0,0,0,0,0,0,0,"R_CKCORE_ADDRPLT",0,0,0,0),
309 /* 19: Only for csky v2. */
310 HOWTO (R_CKCORE_PCREL_IMM26BY2
, /* type */
314 TRUE
, /* pc_relative */
316 complain_overflow_signed
, /* complain_on_overflow */
317 bfd_elf_generic_reloc
, /* special_function */
318 "R_CKCORE_PCREL_IMM26BY2", /* name */
319 FALSE
, /* partial_inplace */
321 0x3ffffff, /* dst_mask */
322 TRUE
), /* pcrel_offset */
324 /* 20: Only for csky v2. */
325 HOWTO (R_CKCORE_PCREL_IMM16BY2
, /* type */
329 TRUE
, /* pc_relative */
331 complain_overflow_signed
, /* complain_on_overflow */
332 NULL
, /* special_function */
333 "R_CKCORE_PCREL_IMM16BY2", /* name */
334 FALSE
, /* partial_inplace */
336 0xffff, /* dst_mask */
337 TRUE
), /* pcrel_offset */
339 /* 21: Only for csky v2. */
340 HOWTO (R_CKCORE_PCREL_IMM16BY4
, /* type */
344 TRUE
, /* pc_relative */
346 complain_overflow_bitfield
, /* complain_on_overflow */
347 NULL
, /* special_function */
348 "R_CKCORE_PCREL_IMM16BY4", /* name */
349 FALSE
, /* partial_inplace */
350 0xffff0000, /* src_mask */
351 0xffff, /* dst_mask */
352 TRUE
), /* pcrel_offset */
354 /* 22: Only for csky v2. */
355 HOWTO (R_CKCORE_PCREL_IMM10BY2
, /* type */
359 TRUE
, /* pc_relative */
361 complain_overflow_signed
, /* complain_on_overflow */
362 bfd_elf_generic_reloc
, /* special_function */
363 "R_CKCORE_PCREL_IMM10BY2", /* name */
364 FALSE
, /* partial_inplace */
366 0x3ff, /* dst_mask */
367 TRUE
), /* pcrel_offset */
369 /* 23: Only for csky v2. */
370 HOWTO (R_CKCORE_PCREL_IMM10BY4
, /* type */
374 TRUE
, /* pc_relative */
376 complain_overflow_bitfield
, /* complain_on_overflow */
377 NULL
, /* special_function */
378 "R_CKCORE_PCREL_IMM10BY4", /* name */
379 FALSE
, /* partial_inplace */
381 0x3ff, /* dst_mask */
382 TRUE
), /* pcrel_offset */
384 /* 24: Only for csky v2. */
385 HOWTO (R_CKCORE_ADDR_HI16
, /* type */
389 FALSE
, /* pc_relative */
391 complain_overflow_dont
, /* complain_on_overflow */
392 bfd_elf_generic_reloc
, /* special_function */
393 "R_CKCORE_ADDR_HI16", /* name */
394 FALSE
, /* partial_inplace */
396 0xffff, /* dst_mask */
397 FALSE
), /* pcrel_offset */
400 HOWTO (R_CKCORE_ADDR_LO16
, /* type */
404 FALSE
, /* pc_relative */
406 complain_overflow_dont
, /* complain_on_overflow */
407 bfd_elf_generic_reloc
, /* special_function */
408 "R_CKCORE_ADDR_LO16", /* name */
409 FALSE
, /* partial_inplace */
411 0xffff, /* dst_mask */
412 FALSE
), /* pcrel_offset */
415 HOWTO (R_CKCORE_GOTPC_HI16
, /* type */
419 TRUE
, /* pc_relative */
421 complain_overflow_dont
, /* complain_on_overflow */
422 bfd_elf_generic_reloc
, /* special_function */
423 "R_CKCORE_GOTPC_HI16", /* name */
424 FALSE
, /* partial_inplace */
426 0xffff, /* dst_mask */
427 FALSE
), /* pcrel_offset */
430 HOWTO (R_CKCORE_GOTPC_LO16
, /* type */
434 TRUE
, /* pc_relative */
436 complain_overflow_dont
, /* complain_on_overflow */
437 bfd_elf_generic_reloc
, /* special_function */
438 "R_CKCORE_GOTPC_LO16", /* name */
439 FALSE
, /* partial_inplace */
441 0xffff, /* dst_mask */
442 FALSE
), /* pcrel_offset */
445 HOWTO (R_CKCORE_GOTOFF_HI16
, /* type */
449 FALSE
, /* pc_relative */
451 complain_overflow_dont
, /* complain_on_overflow */
452 bfd_elf_generic_reloc
, /* special_function */
453 "R_CKCORE_GOTOFF_HI16", /* name */
454 FALSE
, /* partial_inplace */
456 0xffff, /* dst_mask */
457 FALSE
), /* pcrel_offset */
460 HOWTO (R_CKCORE_GOTOFF_LO16
, /* type */
464 FALSE
, /* pc_relative */
466 complain_overflow_dont
, /* complain_on_overflow */
467 bfd_elf_generic_reloc
, /* special_function */
468 "R_CKCORE_GOTOFF_LO16", /* name */
469 FALSE
, /* partial_inplace */
471 0xffff, /* dst_mask */
472 FALSE
), /* pcrel_offset */
475 HOWTO (R_CKCORE_GOT12
, /* type */
479 FALSE
, /* pc_relative */
481 complain_overflow_bitfield
, /* complain_on_overflow */
482 bfd_elf_generic_reloc
, /* special_function */
483 "R_CKCORE_GOT12", /* name */
484 TRUE
, /* partial_inplace */
486 0xfff, /* dst_mask */
487 FALSE
), /* pcrel_offset */
490 HOWTO (R_CKCORE_GOT_HI16
, /* type */
494 FALSE
, /* pc_relative */
496 complain_overflow_dont
, /* complain_on_overflow */
497 bfd_elf_generic_reloc
, /* special_function */
498 "R_CKCORE_GOT_HI16", /* name */
499 TRUE
, /* partial_inplace */
501 0xffff, /* dst_mask */
502 FALSE
), /* pcrel_offset */
505 HOWTO (R_CKCORE_GOT_LO16
, /* type */
509 FALSE
, /* pc_relative */
511 complain_overflow_dont
, /* complain_on_overflow */
512 bfd_elf_generic_reloc
, /* special_function */
513 "R_CKCORE_GOT_LO16", /* name */
514 TRUE
, /* partial_inplace */
516 0xffff, /* dst_mask */
517 FALSE
), /* pcrel_offset */
520 HOWTO (R_CKCORE_PLT12
, /* type */
524 FALSE
, /* pc_relative */
526 complain_overflow_bitfield
, /* complain_on_overflow */
527 bfd_elf_generic_reloc
, /* special_function */
528 "R_CKCORE_PLT12", /* name */
529 TRUE
, /* partial_inplace */
531 0xfff, /* dst_mask */
532 FALSE
), /* pcrel_offset */
535 HOWTO (R_CKCORE_PLT_HI16
, /* type */
539 FALSE
, /* pc_relative */
541 complain_overflow_dont
, /* complain_on_overflow */
542 bfd_elf_generic_reloc
, /* special_function */
543 "R_CKCORE_PLT_HI16", /* name */
544 TRUE
, /* partial_inplace */
546 0xffff, /* dst_mask */
547 FALSE
), /* pcrel_offset */
550 HOWTO (R_CKCORE_PLT_LO16
, /* type */
554 FALSE
, /* pc_relative */
556 complain_overflow_dont
, /* complain_on_overflow */
557 bfd_elf_generic_reloc
, /* special_function */
558 "R_CKCORE_PLT_LO16", /* name */
559 TRUE
, /* partial_inplace */
561 0xffff, /* dst_mask */
562 FALSE
), /* pcrel_offset */
565 HOWTO (R_CKCORE_ADDRGOT_HI16
,0,0,0,0,0,0,0,"R_CKCORE_",0,0,0,0),
568 HOWTO (R_CKCORE_ADDRGOT_LO16
,0,0,0,0,0,0,0,"R_CKCORE_",0,0,0,0),
571 HOWTO (R_CKCORE_ADDRPLT_HI16
,0,0,0,0,0,0,0,"R_CKCORE_",0,0,0,0),
574 HOWTO (R_CKCORE_ADDRPLT_LO16
,0,0,0,0,0,0,0,"R_CKCORE_",0,0,0,0),
577 HOWTO (R_CKCORE_PCREL_JSR_IMM26BY2
, /* type */
581 TRUE
, /* pc_relative */
583 complain_overflow_signed
, /* complain_on_overflow */
584 bfd_elf_generic_reloc
, /* special_function */
585 "R_CKCORE_PCREL_JSR_IMM26BY2", /* name */
586 FALSE
, /* partial_inplace */
588 0x3ffffff, /* dst_mask */
589 TRUE
), /* pcrel_offset */
592 HOWTO (R_CKCORE_TOFFSET_LO16
, /* type */
596 FALSE
, /* pc_relative */
598 complain_overflow_unsigned
, /* complain_on_overflow */
599 NULL
, /* special_function */
600 "R_CKCORE_TOFFSET_LO16", /* name */
601 FALSE
, /* partial_inplace */
603 0xffff, /* dst_mask */
604 FALSE
), /* pcrel_offset */
607 HOWTO (R_CKCORE_DOFFSET_LO16
, /* type */
611 FALSE
, /* pc_relative */
613 complain_overflow_unsigned
, /* complain_on_overflow */
614 NULL
, /* special_function */
615 "R_CKCORE_DOFFSET_LO16", /* name */
616 FALSE
, /* partial_inplace */
618 0xffff, /* dst_mask */
619 FALSE
), /* pcrel_offset */
622 HOWTO (R_CKCORE_PCREL_IMM18BY2
, /* type */
626 TRUE
, /* pc_relative */
628 complain_overflow_signed
, /* complain_on_overflow */
629 NULL
, /* special_function */
630 "R_CKCORE_PCREL_IMM18BY2", /* name */
631 FALSE
, /* partial_inplace */
633 0x3ffff, /* dst_mask */
634 TRUE
), /* pcrel_offset */
637 HOWTO (R_CKCORE_DOFFSET_IMM18
, /* type */
641 FALSE
, /* pc_relative */
643 complain_overflow_unsigned
, /* complain_on_overflow */
644 NULL
, /* special_function */
645 "R_CKCORE_DOFFSET_IMM18", /* name */
646 FALSE
, /* partial_inplace */
648 0x3ffff, /* dst_mask */
649 FALSE
), /* pcrel_offset */
652 HOWTO (R_CKCORE_DOFFSET_IMM18BY2
, /* type */
656 FALSE
, /* pc_relative */
658 complain_overflow_unsigned
, /* complain_on_overflow */
659 NULL
, /* special_function */
660 "R_CKCORE_DOFFSET_IMM18BY2", /* name */
661 FALSE
, /* partial_inplace */
663 0x3ffff, /* dst_mask */
664 FALSE
), /* pcrel_offset */
667 HOWTO (R_CKCORE_DOFFSET_IMM18BY4
, /* type */
671 FALSE
, /* pc_relative */
673 complain_overflow_unsigned
, /* complain_on_overflow */
674 NULL
, /* special_function */
675 "R_CKCORE_DOFFSET_IMM18BY4", /* name */
676 FALSE
, /* partial_inplace */
678 0x3ffff, /* dst_mask */
679 FALSE
), /* pcrel_offset */
682 HOWTO (R_CKCORE_GOTOFF_IMM18
, /* type */
686 FALSE
, /* pc_relative */
688 complain_overflow_bitfield
, /* complain_on_overflow */
689 bfd_elf_generic_reloc
, /* special_function */
690 "R_CKCORE_GOTOFF_IMM18", /* name */
691 TRUE
, /* partial_inplace */
692 0xfffc, /* src_mask */
693 0x3ffff, /* dst_mask */
694 FALSE
), /* pcrel_offset */
697 HOWTO (R_CKCORE_GOT_IMM18BY4
, /* type */
701 FALSE
, /* pc_relative */
703 complain_overflow_bitfield
, /* complain_on_overflow */
704 bfd_elf_generic_reloc
, /* special_function */
705 "R_CKCORE_GOT_IMM18BY4", /* name */
706 TRUE
, /* partial_inplace */
707 0xfffc, /* src_mask */
708 0x3ffff, /* dst_mask */
709 FALSE
), /* pcrel_offset */
712 HOWTO (R_CKCORE_PLT_IMM18BY4
, /* type */
716 FALSE
, /* pc_relative */
718 complain_overflow_bitfield
, /* complain_on_overflow */
719 bfd_elf_generic_reloc
, /* special_function */
720 "R_CKCORE_PLT_IMM18BY4", /* name */
721 TRUE
, /* partial_inplace */
722 0xfffc, /* src_mask */
723 0x3ffff, /* dst_mask */
724 TRUE
), /* pcrel_offset */
727 HOWTO (R_CKCORE_PCREL_IMM7BY4
, /* type */
731 TRUE
, /* pc_relative */
733 complain_overflow_bitfield
, /* complain_on_overflow */
734 bfd_elf_generic_reloc
, /* special_function */
735 "R_CKCORE_PCREL_IMM7BY4", /* name */
736 FALSE
, /* partial_inplace */
737 0xec1f, /* src_mask */
738 0x31f, /* dst_mask */
739 TRUE
), /* pcrel_offset */
741 /* 51: for static nptl. */
742 HOWTO (R_CKCORE_TLS_LE32
, /* type */
746 FALSE
, /* pc_relative */
748 complain_overflow_dont
, /* complain_on_overflow */
749 bfd_elf_generic_reloc
, /* special_function */
750 "R_CKCORE_TLS_LE32", /* name */
751 FALSE
, /* partial_inplace */
753 0xffffffff, /* dst_mask */
754 TRUE
), /* pcrel_offset */
756 /* 52: for static nptl. */
757 HOWTO (R_CKCORE_TLS_IE32
, /* type */
761 FALSE
, /* pc_relative */
763 complain_overflow_dont
, /* complain_on_overflow */
764 bfd_elf_generic_reloc
, /* special_function */
765 "R_CKCORE_TLS_IE32", /* name */
766 FALSE
, /* partial_inplace */
768 0xffffffff, /* dst_mask */
769 TRUE
), /* pcrel_offset */
771 /* 53: for pic nptl. */
772 HOWTO (R_CKCORE_TLS_GD32
, /* type */
776 FALSE
, /* pc_relative */
778 complain_overflow_dont
, /* complain_on_overflow */
779 bfd_elf_generic_reloc
, /* special_function */
780 "R_CKCORE_TLS_GD32", /* name */
781 FALSE
, /* partial_inplace */
783 0xffffffff, /* dst_mask */
784 TRUE
), /* pcrel_offset */
786 /* 54: for pic nptl. */
787 HOWTO (R_CKCORE_TLS_LDM32
, /* type */
791 FALSE
, /* pc_relative */
793 complain_overflow_dont
, /* complain_on_overflow */
794 bfd_elf_generic_reloc
, /* special_function */
795 "R_CKCORE_TLS_LDM32", /* name */
796 FALSE
, /* partial_inplace */
798 0xffffffff, /* dst_mask */
799 TRUE
), /* pcrel_offset */
801 /* 55: for pic nptl. */
802 HOWTO (R_CKCORE_TLS_LDO32
, /* type */
806 FALSE
, /* pc_relative */
808 complain_overflow_dont
, /* complain_on_overflow */
809 bfd_elf_generic_reloc
, /* special_function */
810 "R_CKCORE_TLS_LDO32", /* name */
811 FALSE
, /* partial_inplace */
813 0xffffffff, /* dst_mask */
814 TRUE
), /* pcrel_offset */
816 /* 56: for linker. */
817 HOWTO (R_CKCORE_TLS_DTPMOD32
,0,0,0,0,0,0,0,"R_CKCORE_TLS_DTPMOD32",0,0,0,0),
819 /* 57: for linker. */
820 HOWTO (R_CKCORE_TLS_DTPOFF32
,0,0,0,0,0,0,0,"R_CKCORE_TLS_DTPOFF32",0,0,0,0),
822 /* 58: for linker. */
823 HOWTO (R_CKCORE_TLS_TPOFF32
,0,0,0,0,0,0,0,"R_CKCORE_TLS_TPOFF32",0,0,0,0),
825 /* 59: for ck807f. */
826 HOWTO (R_CKCORE_PCREL_FLRW_IMM8BY4
, /* type */
830 TRUE
, /* pc_relative */
832 complain_overflow_bitfield
, /* complain_on_overflow */
833 NULL
, /* special_function */
834 "R_CKCORE_PCREL_FLRW_IMM8BY4", /* name */
835 FALSE
, /* partial_inplace */
836 0xfe1fff0f, /* src_mask */
837 0x1e000f0, /* dst_mask */
838 TRUE
), /* pcrel_offset */
840 /* 60: for 810 not to generate jsri. */
841 HOWTO (R_CKCORE_NOJSRI
, /* type */
845 FALSE
, /* pc_relative */
847 complain_overflow_dont
, /* complain_on_overflow */
848 bfd_elf_generic_reloc
, /* special_function */
849 "R_CKCORE_NOJSRI", /* name */
850 FALSE
, /* partial_inplace */
851 0xffff, /* src_mask */
852 0xffff, /* dst_mask */
853 FALSE
), /* pcrel_offset */
855 /* 61: for callgraph. */
856 HOWTO (R_CKCORE_CALLGRAPH
, /* type */
860 FALSE
, /* pc_relative */
862 complain_overflow_dont
, /* complain_on_overflow */
863 NULL
, /* special_function */
864 "R_CKCORE_CALLGRAPH", /* name */
865 FALSE
, /* partial_inplace */
868 TRUE
), /* pcrel_offset */
871 HOWTO (R_CKCORE_IRELATIVE
,0,0,0,0,0,0,0,"R_CKCORE_IRELATIVE",0,0,0,0),
873 /* 63: for bloop instruction */
874 HOWTO (R_CKCORE_PCREL_BLOOP_IMM4BY4
, /* type */
880 complain_overflow_signed
, /* complain_on_overflow */
881 bfd_elf_generic_reloc
, /* special_function */
882 "R_CKCORE_PCREL_BLOOP_IMM4BY4", /* name */
883 FALSE
, /* partial_inplace */
886 TRUE
), /* pcrel_offset */
887 /* 64: for bloop instruction */
888 HOWTO (R_CKCORE_PCREL_BLOOP_IMM12BY4
, /* type */
894 complain_overflow_signed
, /* complain_on_overflow */
895 bfd_elf_generic_reloc
, /* special_function */
896 "R_CKCORE_PCREL_BLOOP_IMM12BY4", /* name */
897 FALSE
, /* partial_inplace */
899 0xfff, /* dst_mask */
900 TRUE
), /* pcrel_offset */
906 /* Whether GOT overflow checking is needed. */
907 static int check_got_overflow
= 0;
909 /* Whether the target 32 bits is forced so that the high
910 16 bits is at the low address. */
911 static int need_reverse_bits
;
913 /* Used for relaxation. See csky_relocate_contents. */
914 static bfd_vma read_content_substitute
;
917 The way the following two look-up functions work demands
918 that BFD_RELOC_CKCORE_xxx are defined contiguously. */
920 static reloc_howto_type
*
921 csky_elf_reloc_type_lookup (bfd
* abfd ATTRIBUTE_UNUSED
,
922 bfd_reloc_code_real_type code
)
924 int csky_code
= code
- BFD_RELOC_CKCORE_NONE
;
926 if (csky_code
< 0 || csky_code
>= R_CKCORE_MAX
)
931 csky_code
= R_CKCORE_NONE
;
934 csky_code
= R_CKCORE_ADDR32
;
936 case BFD_RELOC_32_PCREL
:
937 csky_code
= R_CKCORE_PCREL32
;
939 case BFD_RELOC_VTABLE_INHERIT
:
940 csky_code
= R_CKCORE_GNU_VTINHERIT
;
942 case BFD_RELOC_VTABLE_ENTRY
:
943 csky_code
= R_CKCORE_GNU_VTENTRY
;
946 csky_code
= R_CKCORE_RELATIVE
;
949 return (reloc_howto_type
*)NULL
;
952 /* Note: when adding csky bfd reloc types in bfd-in2.h
953 and csky elf reloc types in elf/csky.h,
954 the order of the two reloc type tables should be consistent. */
955 return &csky_elf_howto_table
[csky_code
];
958 static reloc_howto_type
*
959 csky_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
963 for (i
= 0; i
< R_CKCORE_MAX
; i
++)
964 if (strcasecmp (csky_elf_howto_table
[i
].name
, r_name
) == 0)
965 return &csky_elf_howto_table
[i
];
969 static reloc_howto_type
*
970 elf32_csky_howto_from_type (unsigned int r_type
)
972 if (r_type
< R_CKCORE_MAX
)
973 return &csky_elf_howto_table
[r_type
];
979 csky_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
,
981 Elf_Internal_Rela
*dst
)
985 r_type
= ELF32_R_TYPE (dst
->r_info
);
986 cache_ptr
->howto
= elf32_csky_howto_from_type (r_type
);
987 if (cache_ptr
->howto
== NULL
)
989 /* xgettext:c-format */
990 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
992 bfd_set_error (bfd_error_bad_value
);
998 /* The Global Offset Table max size. */
999 #define GOT_MAX_SIZE 0xFFFF8
1001 /* The name of the dynamic interpreter. This is put in the .interp
1003 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1005 /* The size in bytes of an entry in the procedure linkage table. */
1006 #define PLT_ENTRY_SIZE 12
1007 #define PLT_ENTRY_SIZE_P 16
1009 /* The first entry in a procedure linkage table looks like
1010 this. It is set up so that any shared library function that is
1011 called before the relocation has been set up calls the dynamic
1013 static const bfd_vma csky_elf_plt_entry_v2
[PLT_ENTRY_SIZE
/ 4] =
1015 0xd99c2002, /* ldw r12, (gb, 8) */
1016 0xea0d0000, /* movi r13,offset */
1017 0xe8cc0000 /* jmp r12 */
1020 static const bfd_vma csky_elf_plt_entry_v1
[PLT_ENTRY_SIZE
/ 2 ] =
1022 0x25f0, /* subi r0, 32 */
1023 0x9200, /* stw r2, (r0, 0) */
1024 0x9310, /* stw r3, (r0, 4) */
1025 0x822e, /* ldw r2, (gb, 8) */
1026 0x7301, /* lrw r3, #offset */
1027 0x00c2, /* jmp r2 */
1030 /* Branch stub support. */
1039 bfd_boolean use_branch_stub
= TRUE
;
1043 enum stub_insn_type type
;
1044 unsigned int r_type
;
1048 static const insn_sequence elf32_csky_stub_long_branch
[] =
1050 {0xea8d0002, INSN32
, R_CKCORE_NONE
, 0x0}, /* lrw t1,[pc+8] */
1051 {0x7834, INSN16
, R_CKCORE_NONE
, 0x0}, /* jmp t1 */
1052 {0x6c03, INSN16
, R_CKCORE_NONE
, 0x0}, /* nop */
1053 {0x0, DATA_TYPE
, R_CKCORE_ADDR32
, 0x0} /* .long addr */
1056 static const insn_sequence elf32_csky_stub_long_branch_jmpi
[] =
1058 {0xeac00001, INSN32
, R_CKCORE_NONE
, 0x0}, /* jmpi [pc+4] */
1059 {0x0, DATA_TYPE
, R_CKCORE_ADDR32
, 0x0} /* .long addr */
1062 /* The bsr instruction offset limit. */
1063 #define BSR_MAX_FWD_BRANCH_OFFSET (((1 << 25) - 1) << 1)
1064 #define BSR_MAX_BWD_BRANCH_OFFSET (-(1 << 26))
1066 #define STUB_SUFFIX ".stub"
1067 #define STUB_ENTRY_NAME "__%s_veneer"
1069 /* One entry per long/short branch stub defined above. */
1071 DEF_STUB(long_branch) \
1072 DEF_STUB(long_branch_jmpi)
1074 #define DEF_STUB(x) csky_stub_##x,
1075 enum elf32_csky_stub_type
1084 const insn_sequence
* template_sequence
;
1088 #define DEF_STUB(x) {elf32_csky_stub_##x, ARRAY_SIZE(elf32_csky_stub_##x)},
1089 static const stub_def stub_definitions
[] = {
1094 /* The size of the thread control block. */
1097 struct csky_elf_obj_tdata
1099 struct elf_obj_tdata root
;
1101 /* tls_type for each local got entry. */
1102 char *local_got_tls_type
;
1105 #define csky_elf_local_got_tls_type(bfd) \
1106 (csky_elf_tdata (bfd)->local_got_tls_type)
1108 #define csky_elf_tdata(bfd) \
1109 ((struct csky_elf_obj_tdata *) (bfd)->tdata.any)
1111 struct elf32_csky_stub_hash_entry
1113 /* Base hash table entry structure. */
1114 struct bfd_hash_entry root
;
1116 /* The stub section. */
1119 /* Offset within stub_sec of the beginning of this stub. */
1120 bfd_vma stub_offset
;
1122 /* Given the symbol's value and its section we can determine its final
1123 value when building the stubs (so the stub knows where to jump). */
1124 bfd_vma target_value
;
1125 asection
*target_section
;
1127 /* Offset to apply to relocation referencing target_value. */
1128 bfd_vma target_addend
;
1130 /* The stub type. */
1131 enum elf32_csky_stub_type stub_type
;
1132 /* Its encoding size in bytes. */
1135 const insn_sequence
*stub_template
;
1136 /* The size of the template (number of entries). */
1137 int stub_template_size
;
1139 /* The symbol table entry, if any, that this was derived from. */
1140 struct csky_elf_link_hash_entry
*h
;
1142 /* Destination symbol type. */
1143 unsigned char st_type
;
1145 /* Where this stub is being called from, or, in the case of combined
1146 stub sections, the first input section in the group. */
1149 /* The name for the local symbol at the start of this stub. The
1150 stub name in the hash table has to be unique; this does not, so
1151 it can be friendlier. */
1155 #define csky_stub_hash_lookup(table, string, create, copy) \
1156 ((struct elf32_csky_stub_hash_entry *) \
1157 bfd_hash_lookup ((table), (string), (create), (copy)))
1159 /* C-SKY ELF linker hash entry. */
1160 struct csky_elf_link_hash_entry
1162 struct elf_link_hash_entry elf
;
1164 /* For sub jsri2bsr relocs count. */
1165 int jsri2bsr_refcount
;
1167 #define GOT_UNKNOWN 0
1168 #define GOT_NORMAL 1
1169 #define GOT_TLS_GD 2
1170 #define GOT_TLS_IE 4
1172 unsigned char tls_type
;
1174 /* A pointer to the most recently used stub hash entry against this
1176 struct elf32_csky_stub_hash_entry
*stub_cache
;
1179 /* Traverse an C-SKY ELF linker hash table. */
1180 #define csky_elf_link_hash_traverse(table, func, info) \
1181 (elf_link_hash_traverse \
1183 (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
1186 /* Get the C-SKY ELF linker hash table from a link_info structure. */
1187 #define csky_elf_hash_table(info) \
1188 ((elf_hash_table_id ((struct elf_link_hash_table *) ((info)->hash)) \
1190 ? ((struct csky_elf_link_hash_table *) ((info)->hash)) \
1193 #define csky_elf_hash_entry(ent) ((struct csky_elf_link_hash_entry*)(ent))
1195 /* Array to keep track of which stub sections have been created, and
1196 information on stub grouping. */
1199 /* This is the section to which stubs in the group will be
1202 /* The stub section. */
1206 /* C-SKY ELF linker hash table. */
1207 struct csky_elf_link_hash_table
1209 struct elf_link_hash_table elf
;
1211 /* Small local sym cache. */
1212 struct sym_cache sym_cache
;
1214 /* Data for R_CKCORE_TLS_LDM32 relocations. */
1217 bfd_signed_vma refcount
;
1221 /* The stub hash table. */
1222 struct bfd_hash_table stub_hash_table
;
1224 /* Linker stub bfd. */
1227 /* Linker call-backs. */
1228 asection
* (*add_stub_section
) (const char *, asection
*);
1229 void (*layout_sections_again
) (void);
1231 /* Array to keep track of which stub sections have been created, and
1232 * information on stub grouping. */
1233 struct map_stub
*stub_group
;
1235 /* Number of elements in stub_group. */
1236 unsigned int top_id
;
1238 /* Assorted information used by elf32_csky_size_stubs. */
1239 unsigned int bfd_count
;
1240 unsigned int top_index
;
1241 asection
**input_list
;
1244 /* We can't change vectors in the bfd target which will apply to
1245 data sections, however we only do this to the text sections. */
1248 csky_get_insn_32 (bfd
*input_bfd
,
1251 if (bfd_big_endian (input_bfd
))
1252 return bfd_get_32 (input_bfd
, location
);
1254 return (bfd_get_16 (input_bfd
, location
) << 16
1255 | bfd_get_16 (input_bfd
, location
+ 2));
1259 csky_put_insn_32 (bfd
*input_bfd
,
1263 if (bfd_big_endian (input_bfd
))
1264 bfd_put_32 (input_bfd
, x
, location
);
1267 bfd_put_16 (input_bfd
, x
>> 16, location
);
1268 bfd_put_16 (input_bfd
, x
& 0xffff, location
+ 2);
1272 /* Find or create a stub section. Returns a pointer to the stub section, and
1273 the section to which the stub section will be attached (in *LINK_SEC_P).
1274 LINK_SEC_P may be NULL. */
1277 elf32_csky_create_or_find_stub_sec (asection
**link_sec_p
, asection
*section
,
1278 struct csky_elf_link_hash_table
*htab
)
1283 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
1284 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
1285 if (stub_sec
== NULL
)
1287 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
1288 if (stub_sec
== NULL
)
1294 namelen
= strlen (link_sec
->name
);
1295 len
= namelen
+ sizeof (STUB_SUFFIX
);
1296 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
1300 memcpy (s_name
, link_sec
->name
, namelen
);
1301 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
1302 stub_sec
= (*htab
->add_stub_section
) (s_name
, link_sec
);
1303 if (stub_sec
== NULL
)
1305 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
1307 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
1311 *link_sec_p
= link_sec
;
1316 /* Build a name for an entry in the stub hash table. */
1319 elf32_csky_stub_name (const asection
*input_section
,
1320 const asection
*sym_sec
,
1321 const struct csky_elf_link_hash_entry
*hash
,
1322 const Elf_Internal_Rela
*rel
)
1329 len
= 8 + 1 + strlen (hash
->elf
.root
.root
.string
) + 1 + 8 + 1;
1330 stub_name
= bfd_malloc (len
);
1331 if (stub_name
!= NULL
)
1332 sprintf (stub_name
, "%08x_%s+%x",
1333 input_section
->id
& 0xffffffff,
1334 hash
->elf
.root
.root
.string
,
1335 (int) rel
->r_addend
& 0xffffffff);
1339 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
1340 stub_name
= bfd_malloc (len
);
1341 if (stub_name
!= NULL
)
1342 sprintf (stub_name
, "%08x_%x:%x+%x",
1343 input_section
->id
& 0xffffffff,
1344 sym_sec
->id
& 0xffffffff,
1345 (int) ELF32_R_SYM (rel
->r_info
) & 0xffffffff,
1346 (int) rel
->r_addend
& 0xffffffff);
1352 /* Determine the type of stub needed, if any, for a call. */
1354 static enum elf32_csky_stub_type
1355 csky_type_of_stub (struct bfd_link_info
*info
,
1356 asection
*input_sec
,
1357 const Elf_Internal_Rela
*rel
,
1358 unsigned char st_type
,
1359 struct csky_elf_link_hash_entry
*hash
,
1360 bfd_vma destination
,
1361 asection
*sym_sec ATTRIBUTE_UNUSED
,
1362 bfd
*input_bfd ATTRIBUTE_UNUSED
,
1363 const char *name ATTRIBUTE_UNUSED
)
1366 bfd_signed_vma branch_offset
;
1367 unsigned int r_type
;
1368 enum elf32_csky_stub_type stub_type
= csky_stub_none
;
1369 struct elf_link_hash_entry
* h
= &hash
->elf
;
1371 /* We don't know the actual type of destination in case it is of
1372 type STT_SECTION: give up. */
1373 if (st_type
== STT_SECTION
)
1376 location
= (input_sec
->output_offset
1377 + input_sec
->output_section
->vma
1380 branch_offset
= (bfd_signed_vma
)(destination
- location
);
1381 r_type
= ELF32_R_TYPE (rel
->r_info
);
1382 if (r_type
== R_CKCORE_PCREL_IMM26BY2
1384 && ((h
->def_dynamic
&& !h
->def_regular
)
1385 || (bfd_link_pic (info
)
1386 && h
->root
.type
== bfd_link_hash_defweak
)))
1387 || branch_offset
> BSR_MAX_FWD_BRANCH_OFFSET
1388 || branch_offset
< BSR_MAX_BWD_BRANCH_OFFSET
))
1390 if (bfd_csky_arch (info
->output_bfd
) == CSKY_ARCH_810
1391 || bfd_csky_arch (info
->output_bfd
) == CSKY_ARCH_807
)
1392 stub_type
= csky_stub_long_branch_jmpi
;
1394 stub_type
= csky_stub_long_branch
;
1400 /* Create an entry in an C-SKY ELF linker hash table. */
1402 static struct bfd_hash_entry
*
1403 csky_elf_link_hash_newfunc (struct bfd_hash_entry
* entry
,
1404 struct bfd_hash_table
* table
,
1405 const char * string
)
1407 struct csky_elf_link_hash_entry
* ret
=
1408 (struct csky_elf_link_hash_entry
*) entry
;
1410 /* Allocate the structure if it has not already been allocated by a
1414 ret
= (struct csky_elf_link_hash_entry
*)
1415 bfd_hash_allocate (table
,
1416 sizeof (struct csky_elf_link_hash_entry
));
1418 return (struct bfd_hash_entry
*) ret
;
1421 /* Call the allocation method of the superclass. */
1422 ret
= ((struct csky_elf_link_hash_entry
*)
1423 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*)ret
,
1427 struct csky_elf_link_hash_entry
*eh
;
1429 eh
= (struct csky_elf_link_hash_entry
*) ret
;
1430 eh
->plt_refcount
= 0;
1431 eh
->jsri2bsr_refcount
= 0;
1432 eh
->tls_type
= GOT_NORMAL
;
1433 ret
->stub_cache
= NULL
;
1436 return (struct bfd_hash_entry
*) ret
;
1439 /* Initialize an entry in the stub hash table. */
1441 static struct bfd_hash_entry
*
1442 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
1443 struct bfd_hash_table
*table
,
1446 /* Allocate the structure if it has not already been allocated by a
1450 entry
= ((struct bfd_hash_entry
*)
1451 bfd_hash_allocate (table
,
1452 sizeof (struct elf32_csky_stub_hash_entry
)));
1457 /* Call the allocation method of the superclass. */
1458 entry
= bfd_hash_newfunc (entry
, table
, string
);
1461 struct elf32_csky_stub_hash_entry
*eh
;
1463 /* Initialize the local fields. */
1464 eh
= (struct elf32_csky_stub_hash_entry
*) entry
;
1465 eh
->stub_sec
= NULL
;
1466 eh
->stub_offset
= 0;
1467 eh
->target_value
= 0;
1468 eh
->target_section
= NULL
;
1469 eh
->target_addend
= 0;
1470 eh
->stub_type
= csky_stub_none
;
1472 eh
->stub_template
= NULL
;
1473 eh
->stub_template_size
= -1;
1476 eh
->output_name
= NULL
;
1482 /* Free the derived linker hash table. */
1485 csky_elf_link_hash_table_free (bfd
*obfd
)
1487 struct csky_elf_link_hash_table
*ret
1488 = (struct csky_elf_link_hash_table
*) obfd
->link
.hash
;
1490 bfd_hash_table_free (&ret
->stub_hash_table
);
1491 _bfd_elf_link_hash_table_free (obfd
);
1494 /* Create an CSKY elf linker hash table. */
1496 static struct bfd_link_hash_table
*
1497 csky_elf_link_hash_table_create (bfd
*abfd
)
1499 struct csky_elf_link_hash_table
*ret
;
1500 size_t amt
= sizeof (struct csky_elf_link_hash_table
);
1502 ret
= (struct csky_elf_link_hash_table
*) bfd_zmalloc (amt
);
1506 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
,
1507 csky_elf_link_hash_newfunc
,
1508 sizeof (struct csky_elf_link_hash_entry
),
1515 if (!bfd_hash_table_init (&ret
->stub_hash_table
, stub_hash_newfunc
,
1516 sizeof (struct elf32_csky_stub_hash_entry
)))
1521 ret
->elf
.root
.hash_table_free
= csky_elf_link_hash_table_free
;
1522 return &ret
->elf
.root
;
1526 csky_elf_mkobject (bfd
*abfd
)
1528 return bfd_elf_allocate_object (abfd
, sizeof (struct csky_elf_obj_tdata
),
1532 /* Adjust a symbol defined by a dynamic object and referenced by a
1533 regular object. The current definition is in some section of the
1534 dynamic object, but we're not including those sections. We have to
1535 change the definition to something the rest of the link can
1539 csky_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
1540 struct elf_link_hash_entry
*h
)
1542 struct csky_elf_link_hash_entry
*eh
;
1543 struct csky_elf_link_hash_table
*htab
;
1546 eh
= (struct csky_elf_link_hash_entry
*)h
;
1550 htab
= csky_elf_hash_table (info
);
1554 /* Clear jsri2bsr_refcount, if creating shared library files. */
1555 if (bfd_link_pic (info
) && eh
->jsri2bsr_refcount
> 0)
1556 eh
->jsri2bsr_refcount
= 0;
1558 /* If there is a function, put it in the procedure linkage table. We
1559 will fill in the contents of the procedure linkage table later. */
1562 /* Calls to STT_GNU_IFUNC symbols always use a PLT, even if the
1563 symbol binds locally. */
1564 if (h
->plt
.refcount
<= 0
1565 || (h
->type
!= STT_GNU_IFUNC
1566 && (SYMBOL_CALLS_LOCAL (info
, h
)
1567 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
1568 && h
->root
.type
== bfd_link_hash_undefweak
))))
1571 /* This case can occur if we saw a PLT32 reloc in an input
1572 file, but the symbol was never referred to by a dynamic
1573 object, or if all references were garbage collected. In
1574 such a case, we don't actually need to build a procedure
1575 linkage table, and we can just do a PC32 reloc instead. */
1576 h
->plt
.offset
= (bfd_vma
) -1;
1578 if (h
->got
.refcount
== 0)
1579 h
->got
.refcount
+= 1;
1581 else if (h
->got
.refcount
!= 0)
1583 h
->got
.refcount
-= eh
->plt_refcount
;
1584 eh
->plt_refcount
= 0;
1589 /* It's possible that we incorrectly decided a .plt reloc was
1590 needed for an R_CKCORE_PC32 or similar reloc to a non-function
1591 sym in check_relocs. We can't decide accurately between function
1592 and non-function syms in check_relocs; objects loaded later in
1593 the link may change h->type. So fix it now. */
1594 h
->plt
.offset
= (bfd_vma
) -1;
1596 /* If this is a weak symbol, and there is a real definition, the
1597 processor independent code will have arranged for us to see the
1598 real definition first, and we can just use the same value. */
1599 if (h
->is_weakalias
)
1601 struct elf_link_hash_entry
*def
= weakdef (h
);
1602 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
1603 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
1604 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
1608 /* If there are no non-GOT references, we do not need a copy
1610 if (!h
->non_got_ref
)
1613 /* This is a reference to a symbol defined by a dynamic object which
1614 is not a function. */
1616 /* If we are creating a shared library, we must presume that the
1617 only references to the symbol are via the global offset table.
1618 For such cases we need not do anything here; the relocations will
1619 be handled correctly by relocate_section. */
1620 if (bfd_link_pic (info
) || htab
->elf
.is_relocatable_executable
)
1623 /* We must allocate the symbol in our .dynbss section, which will
1624 become part of the .bss section of the executable. There will be
1625 an entry for this symbol in the .dynsym section. The dynamic
1626 object will contain position independent code, so all references
1627 from the dynamic object to this symbol will go through the global
1628 offset table. The dynamic linker will use the .dynsym entry to
1629 determine the address it must put in the global offset table, so
1630 both the dynamic object and the regular object will refer to the
1631 same memory location for the variable. */
1632 /* We must generate a R_CKCORE_COPY reloc to tell the dynamic linker to
1633 copy the initial value out of the dynamic object and into the
1634 runtime process image. We need to remember the offset into the
1635 .rela.bss section we are going to use. */
1636 if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
1638 s
= htab
->elf
.sdynrelro
;
1639 srel
= htab
->elf
.sreldynrelro
;
1643 s
= htab
->elf
.sdynbss
;
1644 srel
= htab
->elf
.srelbss
;
1646 if (info
->nocopyreloc
== 0
1647 && (h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0
1652 srel
->size
+= sizeof (Elf32_External_Rela
);
1654 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
1661 /* Allocate space in .plt, .got and associated reloc sections for
1665 csky_allocate_dynrelocs (struct elf_link_hash_entry
*h
, PTR inf
)
1667 struct bfd_link_info
*info
;
1668 struct csky_elf_link_hash_table
*htab
;
1669 struct csky_elf_link_hash_entry
*eh
;
1670 struct elf_dyn_relocs
*p
;
1672 /* For indirect case, such as _ZdlPv to _ZdlPv@@GLIBCXX_3.4. */
1673 if (h
->root
.type
== bfd_link_hash_indirect
)
1676 if (h
->root
.type
== bfd_link_hash_warning
)
1677 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1680 info
= (struct bfd_link_info
*) inf
;
1681 htab
= csky_elf_hash_table (info
);
1684 /*TODO: how to deal with weak symbol relocs. */
1685 if ((htab
->elf
.dynamic_sections_created
|| h
->type
== STT_GNU_IFUNC
)
1686 && h
->plt
.refcount
> 0)
1688 /* Make sure this symbol is output as a dynamic symbol.
1689 Undefined weak syms won't yet be marked as dynamic. */
1690 if (h
->dynindx
== -1 && !h
->forced_local
1691 && h
->root
.type
== bfd_link_hash_undefweak
1692 && ! bfd_elf_link_record_dynamic_symbol (info
, h
))
1694 if (bfd_link_pic (info
) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
1696 asection
*splt
= htab
->elf
.splt
;
1698 /* If this is the first .plt entry, make room for the special
1700 if (splt
->size
== 0)
1702 if (bfd_csky_abi (info
->output_bfd
) == CSKY_ABI_V1
)
1703 splt
->size
+= PLT_ENTRY_SIZE_P
;
1705 splt
->size
+= PLT_ENTRY_SIZE
;
1707 h
->plt
.offset
= splt
->size
;
1709 /* If this symbol is not defined in a regular file, and we are
1710 not generating a shared library, then set the symbol to this
1711 location in the .plt. This is required to make function
1712 pointers compare as equal between the normal executable and
1713 the shared library. */
1714 if (!bfd_link_pic (info
) && !h
->def_regular
)
1716 h
->root
.u
.def
.section
= splt
;
1717 h
->root
.u
.def
.value
= h
->plt
.offset
;
1720 /* Make room for this entry. */
1721 if (bfd_csky_abi (info
->output_bfd
) == CSKY_ABI_V1
)
1722 splt
->size
+= PLT_ENTRY_SIZE_P
;
1724 splt
->size
+= PLT_ENTRY_SIZE
;
1725 /* We also need to make an entry in the .rela.plt section. */
1726 htab
->elf
.srelplt
->size
+= sizeof (Elf32_External_Rela
);
1728 /* We also need to make an entry in the .got.plt section, which
1729 will be placed in the .got section by the linker script. */
1730 htab
->elf
.sgotplt
->size
+= 4;
1734 h
->plt
.offset
= (bfd_vma
) -1;
1740 h
->plt
.offset
= (bfd_vma
) -1;
1744 if (h
->got
.refcount
> 0)
1750 int tls_type
= csky_elf_hash_entry (h
)->tls_type
;
1751 /* Make sure this symbol is output as a dynamic symbol.
1752 Undefined weak syms won't yet be marked as dynamic. */
1753 if (h
->dynindx
== -1 && !h
->forced_local
1754 && h
->root
.type
== bfd_link_hash_undefweak
1755 && ! bfd_elf_link_record_dynamic_symbol (info
, h
))
1758 sgot
= htab
->elf
.sgot
;
1759 h
->got
.offset
= sgot
->size
;
1760 BFD_ASSERT (tls_type
!= GOT_UNKNOWN
);
1761 if (tls_type
== GOT_NORMAL
)
1762 /* Non-TLS symbols need one GOT slot. */
1766 if (tls_type
& GOT_TLS_GD
)
1767 /* R_CKCORE_TLS_GD32 needs 2 consecutive GOT slots. */
1769 if (tls_type
& GOT_TLS_IE
)
1770 /* R_CKCORE_TLS_IE32 needs one GOT slot. */
1773 dyn
= htab
->elf
.dynamic_sections_created
;
1775 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, bfd_link_pic (info
), h
)
1776 && (! bfd_link_pic (info
) || !SYMBOL_REFERENCES_LOCAL (info
, h
)))
1779 if (tls_type
!= GOT_NORMAL
1780 && (bfd_link_pic (info
) || indx
!= 0)
1781 && ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
1782 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
1783 || h
->root
.type
!= bfd_link_hash_undefweak
))
1785 if (tls_type
& GOT_TLS_IE
)
1786 htab
->elf
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
1787 if (tls_type
& GOT_TLS_GD
)
1788 htab
->elf
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
1789 if ((tls_type
& GOT_TLS_GD
) && indx
!= 0)
1790 htab
->elf
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
1792 else if (((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
1793 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
1794 || h
->root
.type
!= bfd_link_hash_undefweak
)
1795 && (bfd_link_pic (info
)
1796 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
)
1797 || h
->plt
.offset
== (bfd_vma
) -1))
1798 htab
->elf
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
1801 h
->got
.offset
= (bfd_vma
) -1;
1803 eh
= (struct csky_elf_link_hash_entry
*) h
;
1804 if (h
->dyn_relocs
== NULL
)
1807 /* In the shared -Bsymbolic case, discard space allocated for
1808 dynamic pc-relative relocs against symbols which turn out to be
1809 defined in regular objects. For the normal shared case, discard
1810 space for pc-relative relocs that have become local due to symbol
1811 visibility changes. */
1813 if (bfd_link_pic (info
))
1815 if (SYMBOL_CALLS_LOCAL (info
, h
))
1817 struct elf_dyn_relocs
**pp
;
1819 for (pp
= &h
->dyn_relocs
; (p
= *pp
) != NULL
; )
1821 p
->count
-= p
->pc_count
;
1830 if (eh
->jsri2bsr_refcount
1831 && h
->root
.type
== bfd_link_hash_defined
1832 && h
->dyn_relocs
!= NULL
)
1833 h
->dyn_relocs
->count
-= eh
->jsri2bsr_refcount
;
1835 /* Also discard relocs on undefined weak syms with non-default
1837 if (h
->dyn_relocs
!= NULL
1838 && h
->root
.type
== bfd_link_hash_undefweak
)
1840 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
1841 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
1842 h
->dyn_relocs
= NULL
;
1844 /* Make sure undefined weak symbols are output as a dynamic
1846 else if (h
->dynindx
== -1
1848 && !bfd_elf_link_record_dynamic_symbol (info
, h
))
1855 /* For the non-shared case, discard space for relocs against
1856 symbols which turn out to need copy relocs or are not
1860 && ((h
->def_dynamic
&& !h
->def_regular
)
1861 || (htab
->elf
.dynamic_sections_created
1862 && (h
->root
.type
== bfd_link_hash_undefweak
1863 || h
->root
.type
== bfd_link_hash_indirect
1864 || h
->root
.type
== bfd_link_hash_undefined
))))
1866 /* Make sure this symbol is output as a dynamic symbol.
1867 Undefined weak syms won't yet be marked as dynamic. */
1868 if (h
->dynindx
== -1 && !h
->forced_local
1869 && h
->root
.type
== bfd_link_hash_undefweak
)
1871 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
1875 /* If that succeeded, we know we'll be keeping all the
1877 if (h
->dynindx
!= -1)
1881 h
->dyn_relocs
= NULL
;
1886 /* Finally, allocate space. */
1887 for (p
= h
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1889 asection
*srelgot
= htab
->elf
.srelgot
;
1890 srelgot
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
1896 /* Set the sizes of the dynamic sections. */
1899 csky_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
1900 struct bfd_link_info
*info
)
1902 struct csky_elf_link_hash_table
*htab
;
1908 htab
= csky_elf_hash_table (info
);
1911 dynobj
= htab
->elf
.dynobj
;
1915 if (htab
->elf
.dynamic_sections_created
)
1917 /* Set the contents of the .interp section to the interpreter. */
1918 if (!bfd_link_pic (info
) && !info
->nointerp
)
1920 s
= bfd_get_section_by_name (dynobj
, ".interp");
1921 BFD_ASSERT (s
!= NULL
);
1922 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
1923 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
1927 /* Set up .got offsets for local syms, and space for local dynamic
1929 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
1931 bfd_signed_vma
*local_got_refcounts
;
1932 bfd_signed_vma
*end_local_got
;
1933 bfd_size_type locsymcount
;
1934 Elf_Internal_Shdr
*symtab_hdr
;
1935 asection
*srelgot
, *sgot
;
1936 char *local_tls_type
;
1938 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
1941 sgot
= htab
->elf
.sgot
;
1942 srelgot
= htab
->elf
.srelgot
;
1944 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
1946 struct elf_dyn_relocs
*p
;
1948 for (p
= *((struct elf_dyn_relocs
**)
1949 &elf_section_data (s
)->local_dynrel
);
1953 if (!bfd_is_abs_section (p
->sec
)
1954 && bfd_is_abs_section (p
->sec
->output_section
))
1955 /* Input section has been discarded, either because
1956 it is a copy of a linkonce section or due to
1957 linker script /DISCARD/, so we'll be discarding
1960 else if (p
->count
!= 0)
1962 srelgot
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
1963 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
1964 info
->flags
|= DF_TEXTREL
;
1969 local_got_refcounts
= elf_local_got_refcounts (ibfd
);
1970 if (!local_got_refcounts
)
1973 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
1974 locsymcount
= symtab_hdr
->sh_info
;
1975 end_local_got
= local_got_refcounts
+ locsymcount
;
1976 local_tls_type
= csky_elf_local_got_tls_type (ibfd
);
1978 for (; local_got_refcounts
< end_local_got
;
1979 ++local_got_refcounts
, ++local_tls_type
)
1981 if (*local_got_refcounts
> 0)
1983 /* GOT_TLS_GD and GOT_TLS_IE type for TLS, GOT_NORMAL type
1984 for GOT. If output file is shared library, we should output
1985 GOT_TLS_GD type relocation in .rel.got. */
1986 *local_got_refcounts
= sgot
->size
;
1987 if (*local_tls_type
& GOT_TLS_GD
)
1988 /* TLS_GD relocs need an 8-byte structure in the GOT. */
1990 if (*local_tls_type
& GOT_TLS_IE
)
1992 if (*local_tls_type
== GOT_NORMAL
)
1994 if (bfd_link_pic (info
) || *local_tls_type
== GOT_TLS_GD
)
1995 srelgot
->size
+= sizeof (Elf32_External_Rela
);
1998 *local_got_refcounts
= (bfd_vma
) -1;
2002 if (htab
->tls_ldm_got
.refcount
> 0)
2004 /* Allocate two GOT entries and one dynamic relocation (if necessary)
2005 for R_CSKY_TLS_LDM32 relocations. */
2006 htab
->tls_ldm_got
.offset
= htab
->elf
.sgot
->size
;
2007 htab
->elf
.sgot
->size
+= 8;
2008 if (bfd_link_pic (info
))
2009 htab
->elf
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
2012 htab
->tls_ldm_got
.offset
= -1;
2014 /* Allocate global sym .plt and .got entries, and space for global
2015 sym dynamic relocs. */
2016 elf_link_hash_traverse (&htab
->elf
, csky_allocate_dynrelocs
, (PTR
) info
);
2018 /* Check for GOT overflow. */
2019 if (check_got_overflow
== 1
2020 && htab
->elf
.sgot
->size
+ htab
->elf
.sgotplt
->size
> GOT_MAX_SIZE
)
2022 _bfd_error_handler (_("GOT table size out of range")); /* */
2026 /* We now have determined the sizes of the various dynamic sections.
2027 Allocate memory for them. */
2029 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
2031 bfd_boolean strip_section
= TRUE
;
2033 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
2036 if (s
== htab
->elf
.splt
2037 || s
== htab
->elf
.sgot
2038 || s
== htab
->elf
.sgotplt
2039 || s
== htab
->elf
.sdynrelro
2040 || s
== htab
->elf
.sreldynrelro
)
2042 /* Strip this section if we don't need it;
2043 see the comment below. */
2044 /* We'd like to strip these sections if they aren't needed, but if
2045 we've exported dynamic symbols from them we must leave them.
2046 It's too late to tell BFD to get rid of the symbols. */
2048 if (htab
->elf
.hplt
!= NULL
)
2049 strip_section
= FALSE
;
2051 else if (CONST_STRNEQ (bfd_section_name (s
), ".rel") )
2056 /* We use the reloc_count field as a counter if we need
2057 to copy relocs into the output file. */
2061 /* It's not one of our sections, so don't allocate space. */
2064 /* Strip this section if we don't need it; see the
2068 /* If we don't need this section, strip it from the
2069 output file. This is mostly to handle .rel.bss and
2070 .rel.plt. We must create both sections in
2071 create_dynamic_sections, because they must be created
2072 before the linker maps input sections to output
2073 sections. The linker does that before
2074 adjust_dynamic_symbol is called, and it is that
2075 function which decides whether anything needs to go
2076 into these sections. */
2078 s
->flags
|= SEC_EXCLUDE
;
2082 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
2085 /* Allocate memory for the section contents. We use bfd_zalloc
2086 here in case unused entries are not reclaimed before the
2087 section's contents are written out. This should not happen,
2088 but this way if it does, we get a R_CKCORE_NONE reloc instead
2090 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
2091 if (s
->contents
== NULL
)
2095 if (htab
->elf
.dynamic_sections_created
)
2096 htab
->elf
.dt_pltgot_required
= htab
->elf
.sgot
->size
!= 0;
2097 return _bfd_elf_add_dynamic_tags (output_bfd
, info
, relocs
);
2100 /* Finish up dynamic symbol handling. We set the contents of various
2101 dynamic sections here. */
2104 csky_elf_finish_dynamic_symbol (bfd
*output_bfd
,
2105 struct bfd_link_info
*info
,
2106 struct elf_link_hash_entry
*h
,
2107 Elf_Internal_Sym
*sym
)
2109 struct csky_elf_link_hash_table
*htab
;
2111 htab
= csky_elf_hash_table (info
);
2115 /* Sanity check to make sure no unexpected symbol reaches here.
2116 This matches the test in csky_elf_relocate_section handling
2117 of GOT/PLT entries. */
2118 BFD_ASSERT (! (h
->dynindx
== -1
2120 && h
->root
.type
!= bfd_link_hash_undefweak
2121 && bfd_link_pic (info
)));
2123 if (h
->plt
.offset
!= (bfd_vma
) -1)
2127 Elf_Internal_Rela rel
;
2129 asection
*plt
, *relplt
, *gotplt
;
2131 plt
= htab
->elf
.splt
;
2132 relplt
= htab
->elf
.srelplt
;
2133 gotplt
= htab
->elf
.sgotplt
;
2135 /* This symbol has an entry in the procedure linkage table. Set
2137 BFD_ASSERT (h
->dynindx
!= -1
2138 || ((h
->forced_local
|| bfd_link_executable (info
))
2139 && h
->def_regular
));
2140 BFD_ASSERT (plt
!= NULL
&& gotplt
!= NULL
&& relplt
!= NULL
);
2141 if (bfd_csky_abi (output_bfd
) == CSKY_ABI_V2
)
2142 plt_index
= h
->plt
.offset
/ PLT_ENTRY_SIZE
- 1;
2144 plt_index
= h
->plt
.offset
/ PLT_ENTRY_SIZE_P
- 1;
2145 got_offset
= (plt_index
+ 3) * 4;
2147 /* Fill in the entry in the procedure linkage table. */
2148 if (bfd_csky_abi (output_bfd
) == CSKY_ABI_V2
)
2150 csky_put_insn_32 (output_bfd
, csky_elf_plt_entry_v2
[0],
2151 plt
->contents
+ h
->plt
.offset
);
2152 csky_put_insn_32 (output_bfd
,
2153 (csky_elf_plt_entry_v2
[1] | plt_index
),
2154 plt
->contents
+ h
->plt
.offset
+ 4);
2155 csky_put_insn_32 (output_bfd
, csky_elf_plt_entry_v2
[2],
2156 plt
->contents
+ h
->plt
.offset
+ 8);
2161 for (i
= 0; i
< 6; i
++)
2162 bfd_put_16 (output_bfd
, csky_elf_plt_entry_v1
[i
],
2163 plt
->contents
+ h
->plt
.offset
+ i
* 2);
2164 bfd_put_32 (output_bfd
, plt_index
,
2165 plt
->contents
+ h
->plt
.offset
+ i
* 2);
2168 /* Fill in the entry in the .rel.plt section. */
2169 rel
.r_offset
= (htab
->elf
.sgotplt
->output_section
->vma
2170 + htab
->elf
.sgotplt
->output_offset
2172 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_CKCORE_JUMP_SLOT
);
2173 rel
.r_addend
= (plt
->output_section
->vma
2174 + plt
->output_offset
2176 loc
= (htab
->elf
.srelplt
->contents
2177 + plt_index
* sizeof (Elf32_External_Rela
));
2180 bfd_elf32_swap_reloca_out (output_bfd
, &rel
, loc
);
2181 if (! h
->def_regular
)
2183 /* Mark the symbol as undefined, rather than as defined in
2184 the .plt section. Leave the value alone. */
2185 sym
->st_shndx
= SHN_UNDEF
;
2186 /* If the symbol is weak, we do need to clear the value.
2187 Otherwise, the PLT entry would provide a definition for
2188 the symbol even if the symbol wasn't defined anywhere,
2189 and so the symbol would never be NULL. Leave the value if
2190 there were any relocations where pointer equality matters
2191 (this is a clue for the dynamic linker, to make function
2192 pointer comparisons work between an application and shared
2194 if (!h
->ref_regular_nonweak
|| !h
->pointer_equality_needed
)
2199 /* Fill in the entry in the .got section. */
2200 if (h
->got
.offset
!= (bfd_vma
) -1
2201 && ((csky_elf_hash_entry (h
)->tls_type
& GOT_TLS_GD
) == 0)
2202 && ((csky_elf_hash_entry (h
)->tls_type
& GOT_TLS_IE
) == 0))
2204 Elf_Internal_Rela rel
;
2207 /* This symbol has an entry in the global offset table.
2209 BFD_ASSERT (htab
->elf
.sgot
!= NULL
&& htab
->elf
.srelgot
!= NULL
);
2211 rel
.r_offset
= (htab
->elf
.sgot
->output_section
->vma
2212 + htab
->elf
.sgot
->output_offset
2213 + (h
->got
.offset
& ~(bfd_vma
) 1));
2215 /* If this is a static link, or it is a -Bsymbolic link and the
2216 symbol is defined locally or was forced to be local because
2217 of a version file, we just want to emit a RELATIVE reloc.
2218 The entry in the global offset table will already have been
2219 initialized in the relocate_section function. */
2220 if (bfd_link_pic (info
) && SYMBOL_REFERENCES_LOCAL (info
, h
))
2222 BFD_ASSERT ((h
->got
.offset
& 1) != 0);
2223 rel
.r_info
= ELF32_R_INFO (0, R_CKCORE_RELATIVE
);
2224 rel
.r_addend
= (h
->root
.u
.def
.value
2225 + h
->root
.u
.def
.section
->output_offset
2226 + h
->root
.u
.def
.section
->output_section
->vma
);
2230 BFD_ASSERT ((h
->got
.offset
& 1) == 0);
2231 bfd_put_32 (output_bfd
, (bfd_vma
) 0,
2232 htab
->elf
.sgot
->contents
+ h
->got
.offset
);
2233 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_CKCORE_GLOB_DAT
);
2237 loc
= htab
->elf
.srelgot
->contents
;
2238 loc
+= htab
->elf
.srelgot
->reloc_count
++ * sizeof (Elf32_External_Rela
);
2241 bfd_elf32_swap_reloca_out (output_bfd
, &rel
, loc
);
2247 Elf_Internal_Rela rela
;
2250 /* This symbol needs a copy reloc. Set it up. */
2251 BFD_ASSERT (h
->dynindx
!= -1
2252 && (h
->root
.type
== bfd_link_hash_defined
2253 || h
->root
.type
== bfd_link_hash_defweak
));
2255 rela
.r_offset
= (h
->root
.u
.def
.value
2256 + h
->root
.u
.def
.section
->output_section
->vma
2257 + h
->root
.u
.def
.section
->output_offset
);
2258 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_CKCORE_COPY
);
2260 if (h
->root
.u
.def
.section
== htab
->elf
.sdynrelro
)
2261 s
= htab
->elf
.sreldynrelro
;
2263 s
= htab
->elf
.srelbss
;
2264 BFD_ASSERT (s
!= NULL
);
2265 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
2266 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
2269 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
2270 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
2271 || strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
2272 sym
->st_shndx
= SHN_ABS
;
2277 /* Finish up the dynamic sections. */
2280 csky_elf_finish_dynamic_sections (bfd
*output_bfd
,
2281 struct bfd_link_info
*info
)
2283 struct csky_elf_link_hash_table
*htab
;
2288 htab
= csky_elf_hash_table (info
);
2292 dynobj
= htab
->elf
.dynobj
;
2293 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
2295 if (htab
->elf
.dynamic_sections_created
)
2297 Elf32_External_Dyn
*dyncon
, *dynconend
;
2299 BFD_ASSERT (sdyn
!= NULL
&& htab
->elf
.sgot
!= NULL
);
2301 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
2302 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
2303 for (; dyncon
< dynconend
; dyncon
++)
2305 Elf_Internal_Dyn dyn
;
2306 bfd_boolean size
= FALSE
;
2307 const char *name
= NULL
;
2309 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
2327 dyn
.d_un
.d_ptr
= htab
->elf
.sgot
->output_section
->vma
;
2330 dyn
.d_un
.d_ptr
= htab
->elf
.srelplt
->output_section
->vma
2331 + htab
->elf
.srelplt
->output_offset
;
2337 asection
*s
= bfd_get_section_by_name (output_bfd
, name
);
2342 dyn
.d_un
.d_ptr
= s
->vma
;
2344 dyn
.d_un
.d_val
= s
->size
;
2346 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2350 /* Fill in the first three entries in the global offset table. */
2351 if (htab
->elf
.sgotplt
)
2352 got_sec
= htab
->elf
.sgotplt
;
2354 got_sec
= htab
->elf
.sgot
;
2355 if (got_sec
!= NULL
)
2357 if (got_sec
->size
> 0)
2359 bfd_put_32 (output_bfd
,
2360 (sdyn
== NULL
? (bfd_vma
) 0
2361 : sdyn
->output_section
->vma
+ sdyn
->output_offset
),
2363 bfd_put_32 (output_bfd
, (bfd_vma
) 0, got_sec
->contents
+ 4);
2364 bfd_put_32 (output_bfd
, (bfd_vma
) 0, got_sec
->contents
+ 8);
2366 elf_section_data (got_sec
->output_section
)->this_hdr
.sh_entsize
= 4;
2371 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2374 csky_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
2375 struct elf_link_hash_entry
*dir
,
2376 struct elf_link_hash_entry
*ind
)
2378 struct csky_elf_link_hash_entry
*edir
, *eind
;
2380 edir
= (struct csky_elf_link_hash_entry
*) dir
;
2381 eind
= (struct csky_elf_link_hash_entry
*) ind
;
2383 if (ind
->root
.type
== bfd_link_hash_indirect
2384 && dir
->got
.refcount
<= 0)
2386 edir
->tls_type
= eind
->tls_type
;
2387 eind
->tls_type
= GOT_UNKNOWN
;
2389 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
2392 /* Used to decide how to sort relocs in an optimal manner for the
2393 dynamic linker, before writing them out. */
2395 static enum elf_reloc_type_class
2396 csky_elf_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
2397 const asection
*rel_sec ATTRIBUTE_UNUSED
,
2398 const Elf_Internal_Rela
*rela
)
2400 switch ((int) ELF32_R_TYPE (rela
->r_info
))
2402 case R_CKCORE_RELATIVE
:
2403 return reloc_class_relative
;
2404 case R_CKCORE_JUMP_SLOT
:
2405 return reloc_class_plt
;
2407 return reloc_class_copy
;
2408 case R_CKCORE_IRELATIVE
:
2409 return reloc_class_ifunc
;
2411 return reloc_class_normal
;
2415 /* Return the section that should be marked against GC for a given
2419 csky_elf_gc_mark_hook (asection
*sec
,
2420 struct bfd_link_info
*info
,
2421 Elf_Internal_Rela
*rel
,
2422 struct elf_link_hash_entry
*h
,
2423 Elf_Internal_Sym
*sym
)
2427 switch (ELF32_R_TYPE (rel
->r_info
))
2429 case R_CKCORE_GNU_VTINHERIT
:
2430 case R_CKCORE_GNU_VTENTRY
:
2435 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
2438 /* Look through the relocs for a section during the first phase.
2439 Since we don't do .gots or .plts, we just need to consider the
2440 virtual table relocs for gc. */
2443 csky_elf_check_relocs (bfd
* abfd
,
2444 struct bfd_link_info
* info
,
2446 const Elf_Internal_Rela
* relocs
)
2448 Elf_Internal_Shdr
* symtab_hdr
;
2449 struct elf_link_hash_entry
** sym_hashes
;
2450 const Elf_Internal_Rela
* rel
;
2451 const Elf_Internal_Rela
* rel_end
;
2452 struct csky_elf_link_hash_table
*htab
;
2455 /* if output type is relocatable, return. */
2456 if (bfd_link_relocatable (info
))
2459 htab
= csky_elf_hash_table (info
);
2463 symtab_hdr
= & elf_tdata (abfd
)->symtab_hdr
;
2464 sym_hashes
= elf_sym_hashes (abfd
);
2466 rel_end
= relocs
+ sec
->reloc_count
;
2468 for (rel
= relocs
; rel
< rel_end
; rel
++)
2470 struct elf_link_hash_entry
*h
;
2471 unsigned long r_symndx
;
2472 Elf_Internal_Sym
*isym
;
2475 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2476 r_type
= ELF32_R_TYPE (rel
->r_info
);
2477 if (r_symndx
< symtab_hdr
->sh_info
)
2479 /* A local symbol. */
2480 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
2489 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
2490 while (h
->root
.type
== bfd_link_hash_indirect
2491 || h
->root
.type
== bfd_link_hash_warning
)
2492 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2497 case R_CKCORE_PCREL_IMM26BY2
:
2498 case R_CKCORE_PCREL_IMM11BY2
:
2499 case R_CKCORE_PCREL_JSR_IMM11BY2
:
2500 case R_CKCORE_PCREL_JSR_IMM26BY2
:
2501 /* If the symbol is '*UND*', means this reloc is used for
2502 * callgraph, don't need to leave to shared object. */
2505 /* Else fall through. */
2506 case R_CKCORE_ADDR32
:
2507 case R_CKCORE_ADDR_HI16
:
2508 case R_CKCORE_ADDR_LO16
:
2510 && bfd_link_executable (info
)
2511 && r_type
== R_CKCORE_ADDR32
2512 && h
->type
== STT_OBJECT
2513 && (sec
->flags
& SEC_ALLOC
) != 0
2514 && (sec
->flags
& SEC_READONLY
))
2515 /* If this reloc is in a read-only section, we might
2516 need a copy reloc. We can't check reliably at this
2517 stage whether the section is read-only, as input
2518 sections have not yet been mapped to output sections.
2519 Tentatively set the flag for now, and correct in
2520 adjust_dynamic_symbol. */
2523 /* If we are creating a shared library or relocatable executable,
2524 and this is a reloc against a global symbol, then we need to
2525 copy the reloc into the shared library. However, if we are
2526 linking with -Bsymbolic, we do not need to copy a reloc
2527 against a global symbol which is defined in an object we are
2528 including in the link (i.e., DEF_REGULAR is set). At
2529 this point we have not seen all the input files, so it is
2530 possible that DEF_REGULAR is not set now but will be set
2531 later (it is never cleared). We account for that possibility
2532 below by storing information in the relocs_copied field of
2533 the hash table entry. */
2534 if ((bfd_link_pic (info
) && (sec
->flags
& SEC_ALLOC
) != 0)
2535 || (!bfd_link_pic (info
)
2536 && (sec
->flags
& SEC_ALLOC
) != 0
2538 && (h
->root
.type
== bfd_link_hash_defweak
2539 || !h
->def_regular
)))
2541 struct elf_dyn_relocs
*p
;
2542 struct elf_dyn_relocs
**head
;
2543 /* We must copy these reloc types into the output file.
2544 Create a reloc section in dynobj and make room for
2548 if (htab
->elf
.dynobj
== NULL
)
2549 htab
->elf
.dynobj
= abfd
;
2551 sreloc
= _bfd_elf_make_dynamic_reloc_section
2552 (sec
, htab
->elf
.dynobj
, 2, abfd
, TRUE
);
2558 if (h
== NULL
&& !use_branch_stub
2559 && ((ELF32_R_TYPE (rel
->r_info
)
2560 == R_CKCORE_PCREL_IMM26BY2
)
2561 || (ELF32_R_TYPE (rel
->r_info
)
2562 == R_CKCORE_PCREL_IMM11BY2
)))
2565 /* If this is a global symbol, we count the number of
2566 relocations we need for this symbol. */
2569 struct csky_elf_link_hash_entry
*eh
;
2570 eh
= (struct csky_elf_link_hash_entry
*)h
;
2571 if ((ELF32_R_TYPE (rel
->r_info
)
2572 == R_CKCORE_PCREL_JSR_IMM26BY2
)
2573 || (ELF32_R_TYPE (rel
->r_info
)
2574 == R_CKCORE_PCREL_JSR_IMM11BY2
))
2575 eh
->jsri2bsr_refcount
+= 1;
2576 head
= &h
->dyn_relocs
;
2580 /* Track dynamic relocs needed for local syms too.
2581 We really need local syms available to do this
2585 Elf_Internal_Sym
*loc_isym
;
2587 loc_isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
2589 if (loc_isym
== NULL
)
2591 s
= bfd_section_from_elf_index (abfd
, loc_isym
->st_shndx
);
2594 vpp
= &elf_section_data (s
)->local_dynrel
;
2595 head
= (struct elf_dyn_relocs
**)vpp
;
2599 if (p
== NULL
|| p
->sec
!= sec
)
2601 size_t amt
= sizeof *p
;
2602 p
= ((struct elf_dyn_relocs
*)
2603 bfd_alloc (htab
->elf
.dynobj
, amt
));
2613 if (ELF32_R_TYPE (rel
->r_info
) == R_CKCORE_PCREL_IMM26BY2
2614 || ELF32_R_TYPE (rel
->r_info
) == R_CKCORE_PCREL_IMM11BY2
)
2620 case R_CKCORE_PLT_IMM18BY4
:
2621 case R_CKCORE_PLT32
:
2622 /* This symbol requires a procedure linkage table entry. We
2623 actually build the entry in adjust_dynamic_symbol,
2624 because this might be a case of linking PIC code which is
2625 never referenced by a dynamic object, in which case we
2626 don't need to generate a procedure linkage table entry
2629 /* If this is a local symbol, we resolve it directly without
2630 creating a procedure linkage table entry. */
2633 if (ELF32_R_TYPE (rel
->r_info
) == R_CKCORE_PLT_IMM18BY4
)
2634 check_got_overflow
= 1;
2637 h
->plt
.refcount
+= 1;
2638 h
->got
.refcount
+= 1;
2639 ((struct csky_elf_link_hash_entry
*)h
)->plt_refcount
+= 1;
2642 case R_CKCORE_GOT12
:
2643 case R_CKCORE_PLT12
:
2644 case R_CKCORE_GOT32
:
2645 case R_CKCORE_GOT_HI16
:
2646 case R_CKCORE_GOT_LO16
:
2647 case R_CKCORE_PLT_HI16
:
2648 case R_CKCORE_PLT_LO16
:
2649 case R_CKCORE_GOT_IMM18BY4
:
2650 case R_CKCORE_TLS_IE32
:
2651 case R_CKCORE_TLS_GD32
:
2653 int tls_type
, old_tls_type
;
2656 && bfd_link_executable (info
)
2657 && r_type
== R_CKCORE_GOT_IMM18BY4
2658 && (sec
->flags
& SEC_ALLOC
) != 0
2659 && (sec
->flags
& SEC_READONLY
))
2660 /* If this reloc is in a read-only section, we might
2661 need a copy reloc. We can't check reliably at this
2662 stage whether the section is read-only, as input
2663 sections have not yet been mapped to output sections.
2664 Tentatively set the flag for now, and correct in
2665 adjust_dynamic_symbol. */
2668 switch (ELF32_R_TYPE (rel
->r_info
))
2670 case R_CKCORE_TLS_IE32
:
2671 tls_type
= GOT_TLS_IE
;
2673 case R_CKCORE_TLS_GD32
:
2674 tls_type
= GOT_TLS_GD
;
2677 tls_type
= GOT_NORMAL
;
2682 if (ELF32_R_TYPE (rel
->r_info
) == R_CKCORE_GOT_IMM18BY4
)
2683 check_got_overflow
= 1;
2684 h
->got
.refcount
+= 1;
2685 old_tls_type
= csky_elf_hash_entry (h
)->tls_type
;
2689 bfd_signed_vma
*local_got_refcounts
;
2691 /* This is a global offset table entry for a local symbol. */
2692 /* we can write a new function named
2693 elf32_csky_allocate_local_sym_info() to replace
2695 local_got_refcounts
= elf_local_got_refcounts (abfd
);
2696 if (local_got_refcounts
== NULL
)
2700 size
= symtab_hdr
->sh_info
;
2701 size
*= (sizeof (bfd_signed_vma
) + sizeof (char));
2702 local_got_refcounts
= ((bfd_signed_vma
*)
2703 bfd_zalloc (abfd
, size
));
2704 if (local_got_refcounts
== NULL
)
2706 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
2707 csky_elf_local_got_tls_type (abfd
)
2708 = (char *) (local_got_refcounts
+ symtab_hdr
->sh_info
);
2710 local_got_refcounts
[r_symndx
] += 1;
2711 old_tls_type
= csky_elf_local_got_tls_type (abfd
)[r_symndx
];
2714 /* We will already have issued an error message if there is a
2715 TLS / non-TLS mismatch, based on the symbol type. We don't
2716 support any linker relaxations. So just combine any TLS
2718 if (old_tls_type
!= GOT_UNKNOWN
&& old_tls_type
!= GOT_NORMAL
2719 && tls_type
!= GOT_NORMAL
)
2720 tls_type
|= old_tls_type
;
2722 if (old_tls_type
!= tls_type
)
2725 csky_elf_hash_entry (h
)->tls_type
= tls_type
;
2727 csky_elf_local_got_tls_type (abfd
)[r_symndx
] = tls_type
;
2732 case R_CKCORE_TLS_LDM32
:
2733 if (ELF32_R_TYPE (rel
->r_info
) == R_CKCORE_TLS_LDM32
)
2734 htab
->tls_ldm_got
.refcount
++;
2737 case R_CKCORE_GOTOFF
:
2738 case R_CKCORE_GOTPC
:
2739 case R_CKCORE_GOTOFF_HI16
:
2740 case R_CKCORE_GOTOFF_LO16
:
2741 case R_CKCORE_GOTPC_HI16
:
2742 case R_CKCORE_GOTPC_LO16
:
2743 case R_CKCORE_GOTOFF_IMM18
:
2744 if (htab
->elf
.sgot
== NULL
)
2746 if (htab
->elf
.dynobj
== NULL
)
2747 htab
->elf
.dynobj
= abfd
;
2748 if (!_bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
2753 /* This relocation describes the C++ object vtable hierarchy.
2754 Reconstruct it for later use during GC. */
2755 case R_CKCORE_GNU_VTINHERIT
:
2756 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
2760 /* This relocation describes which C++ vtable entries are actually
2761 used. Record for later use during GC. */
2762 case R_CKCORE_GNU_VTENTRY
:
2763 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
2772 static const struct bfd_elf_special_section csky_elf_special_sections
[]=
2774 { STRING_COMMA_LEN (".ctors"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2775 { STRING_COMMA_LEN (".dtors"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2776 { NULL
, 0, 0, 0, 0 }
2779 /* Function to keep CSKY specific flags in the ELF header. */
2782 csky_elf_set_private_flags (bfd
* abfd
, flagword flags
)
2784 BFD_ASSERT (! elf_flags_init (abfd
)
2785 || elf_elfheader (abfd
)->e_flags
== flags
);
2787 elf_elfheader (abfd
)->e_flags
= flags
;
2788 elf_flags_init (abfd
) = TRUE
;
2792 static csky_arch_for_merge
*
2793 csky_find_arch_with_eflag (const unsigned long arch_eflag
)
2795 csky_arch_for_merge
*csky_arch
= NULL
;
2797 for (csky_arch
= csky_archs
; csky_arch
->name
!= NULL
; csky_arch
++)
2798 if (csky_arch
->arch_eflag
== arch_eflag
)
2800 if (csky_arch
== NULL
)
2802 _bfd_error_handler (_("warning: unrecognized arch eflag '%#lx'"),
2804 bfd_set_error (bfd_error_wrong_format
);
2809 /* Merge backend specific data from an object file to the output
2810 object file when linking. */
2813 csky_elf_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
2815 bfd
*obfd
= info
->output_bfd
;
2818 csky_arch_for_merge
*old_arch
= NULL
;
2819 csky_arch_for_merge
*new_arch
= NULL
;
2821 /* Check if we have the same endianness. */
2822 if (! _bfd_generic_verify_endian_match (ibfd
, info
))
2825 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2826 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2829 new_flags
= elf_elfheader (ibfd
)->e_flags
;
2830 old_flags
= elf_elfheader (obfd
)->e_flags
;
2832 if (! elf_flags_init (obfd
))
2834 /* First call, no flags set. */
2835 elf_flags_init (obfd
) = TRUE
;
2836 elf_elfheader (obfd
)->e_flags
= new_flags
;
2838 else if (new_flags
== old_flags
)
2841 else if (new_flags
== 0 || old_flags
== 0)
2842 /* When one flag is 0, assign the other one's flag. */
2843 elf_elfheader (obfd
)->e_flags
= new_flags
| old_flags
;
2846 flagword newest_flag
= 0;
2848 if ((new_flags
& CSKY_ARCH_MASK
) != 0
2849 && (old_flags
& CSKY_ARCH_MASK
) != 0)
2851 new_arch
= csky_find_arch_with_eflag (new_flags
& CSKY_ARCH_MASK
);
2852 old_arch
= csky_find_arch_with_eflag (old_flags
& CSKY_ARCH_MASK
);
2853 /* Collect flags like e, f, g. */
2854 newest_flag
= (old_flags
& (~CSKY_ARCH_MASK
))
2855 | (new_flags
& (~CSKY_ARCH_MASK
));
2856 if (new_arch
!= NULL
&& old_arch
!= NULL
)
2858 if (new_arch
->class != old_arch
->class)
2861 /* xgettext:c-format */
2862 (_("%pB: machine flag conflict with target"), ibfd
);
2863 bfd_set_error (bfd_error_wrong_format
);
2866 else if (new_arch
->class_level
!= old_arch
->class_level
)
2868 csky_arch_for_merge
*newest_arch
2869 = (new_arch
->class_level
> old_arch
->class_level
2870 ? new_arch
: old_arch
);
2871 if (new_arch
->do_warning
|| old_arch
->do_warning
)
2874 /* xgettext:c-format */
2875 (_("warning: file %pB's arch flag ck%s conflicts with "
2876 "target ck%s, using ck%s"),
2877 ibfd
, new_arch
->name
, old_arch
->name
,
2879 bfd_set_error (bfd_error_wrong_format
);
2882 newest_flag
|= newest_arch
->arch_eflag
;
2885 newest_flag
|= ((new_flags
& (CSKY_ARCH_MASK
| CSKY_ABI_MASK
))
2887 & (CSKY_ARCH_MASK
| CSKY_ABI_MASK
)));
2890 newest_flag
|= ((new_flags
& (CSKY_ARCH_MASK
| CSKY_ABI_MASK
))
2891 | (old_flags
& (CSKY_ARCH_MASK
| CSKY_ABI_MASK
)));
2894 newest_flag
|= ((new_flags
& (CSKY_ARCH_MASK
| CSKY_ABI_MASK
))
2895 | (old_flags
& (CSKY_ARCH_MASK
| CSKY_ABI_MASK
)));
2897 elf_elfheader (obfd
)->e_flags
= newest_flag
;
2902 /* Ignore the discarded relocs in special sections in link time. */
2905 csky_elf_ignore_discarded_relocs (asection
*sec
)
2907 if (strcmp (sec
->name
, ".csky_stack_size") == 0)
2912 /* .csky_stack_size are not referenced directly. This pass marks all of
2913 them as required. */
2916 elf32_csky_gc_mark_extra_sections (struct bfd_link_info
*info
,
2917 elf_gc_mark_hook_fn gc_mark_hook ATTRIBUTE_UNUSED
)
2921 _bfd_elf_gc_mark_extra_sections (info
, gc_mark_hook
);
2923 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link
.next
)
2927 for (o
= sub
->sections
; o
!= NULL
; o
= o
->next
)
2928 if (strcmp (o
->name
, ".csky_stack_size") == 0)
2935 /* The linker repeatedly calls this function for each input section,
2936 in the order that input sections are linked into output sections.
2937 Build lists of input sections to determine groupings between which
2938 we may insert linker stubs. */
2941 elf32_csky_next_input_section (struct bfd_link_info
*info
,
2944 struct csky_elf_link_hash_table
*htab
= csky_elf_hash_table (info
);
2947 if (isec
->output_section
->index
<= htab
->top_index
)
2949 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
2951 if (*list
!= bfd_abs_section_ptr
)
2953 /* Steal the link_sec pointer for our list. */
2954 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
2955 /* This happens to make the list in reverse order,
2956 which we reverse later in group_sections. */
2957 PREV_SEC (isec
) = *list
;
2963 /* See whether we can group stub sections together. Grouping stub
2964 sections may result in fewer stubs. More importantly, we need to
2965 put all .init* and .fini* stubs at the end of the .init or
2966 .fini output sections respectively, because glibc splits the
2967 _init and _fini functions into multiple parts. Putting a stub in
2968 the middle of a function is not a good idea. */
2971 group_sections (struct csky_elf_link_hash_table
*htab
,
2972 bfd_size_type stub_group_size
,
2973 bfd_boolean stubs_always_after_branch
)
2975 asection
**list
= htab
->input_list
;
2979 asection
*tail
= *list
;
2982 if (tail
== bfd_abs_section_ptr
)
2985 /* Reverse the list: we must avoid placing stubs at the
2986 beginning of the section because the beginning of the text
2987 section may be required for an interrupt vector in bare metal
2989 #define NEXT_SEC PREV_SEC
2991 while (tail
!= NULL
)
2993 /* Pop from tail. */
2994 asection
*item
= tail
;
2995 tail
= PREV_SEC (item
);
2998 NEXT_SEC (item
) = head
;
3002 while (head
!= NULL
)
3006 bfd_vma stub_group_start
= head
->output_offset
;
3007 bfd_vma end_of_next
;
3010 while (NEXT_SEC (curr
) != NULL
)
3012 next
= NEXT_SEC (curr
);
3013 end_of_next
= next
->output_offset
+ next
->size
;
3014 if (end_of_next
- stub_group_start
>= stub_group_size
)
3015 /* End of NEXT is too far from start, so stop. */
3020 /* OK, the size from the start to the start of CURR is less
3021 * than stub_group_size and thus can be handled by one stub
3022 * section. (Or the head section is itself larger than
3023 * stub_group_size, in which case we may be toast.)
3024 * We should really be keeping track of the total size of
3025 * stubs added here, as stubs contribute to the final output
3029 next
= NEXT_SEC (head
);
3030 /* Set up this stub group. */
3031 htab
->stub_group
[head
->id
].link_sec
= curr
;
3033 while (head
!= curr
&& (head
= next
) != NULL
);
3035 /* But wait, there's more! Input sections up to stub_group_size
3036 * bytes after the stub section can be handled by it too. */
3037 if (!stubs_always_after_branch
)
3039 stub_group_start
= curr
->output_offset
+ curr
->size
;
3041 while (next
!= NULL
)
3043 end_of_next
= next
->output_offset
+ next
->size
;
3044 if (end_of_next
- stub_group_start
>= stub_group_size
)
3045 /* End of NEXT is too far from stubs, so stop. */
3047 /* Add NEXT to the stub group. */
3049 next
= NEXT_SEC (head
);
3050 htab
->stub_group
[head
->id
].link_sec
= curr
;
3056 while (list
++ != htab
->input_list
+ htab
->top_index
);
3058 free (htab
->input_list
);
3063 /* If the symbol referenced by bsr is defined in shared object file,
3064 or it is a weak symbol and we aim to create shared object file,
3065 we must create a stub for this bsr. */
3068 sym_must_create_stub (struct elf_link_hash_entry
*h
,
3069 struct bfd_link_info
*info
)
3072 && ((h
->def_dynamic
&& !h
->def_regular
)
3073 || (bfd_link_pic (info
) && h
->root
.type
== bfd_link_hash_defweak
)))
3079 /* Calculate the template, template size and instruction size for a stub.
3080 Return value is the instruction size. */
3083 find_stub_size_and_template (enum elf32_csky_stub_type stub_type
,
3084 const insn_sequence
**stub_template
,
3085 int *stub_template_size
)
3087 const insn_sequence
*template_sequence
= NULL
;
3088 int template_size
= 0;
3092 template_sequence
= stub_definitions
[stub_type
].template_sequence
;
3093 template_size
= stub_definitions
[stub_type
].template_size
;
3096 for (i
= 0; i
< template_size
; i
++)
3098 switch (template_sequence
[i
].type
)
3116 *stub_template
= template_sequence
;
3117 if (stub_template_size
)
3118 *stub_template_size
= template_size
;
3123 /* As above, but don't actually build the stub. Just bump offset so
3124 we know stub section sizes. */
3127 csky_size_one_stub (struct bfd_hash_entry
*gen_entry
,
3128 void * in_arg ATTRIBUTE_UNUSED
)
3130 struct elf32_csky_stub_hash_entry
*stub_entry
;
3131 const insn_sequence
*template_sequence
= NULL
;
3132 int template_size
= 0;
3135 /* Massage our args to the form they really have. */
3136 stub_entry
= (struct elf32_csky_stub_hash_entry
*) gen_entry
;
3138 BFD_ASSERT (stub_entry
->stub_type
> csky_stub_none
3139 && stub_entry
->stub_type
< ARRAY_SIZE (stub_definitions
));
3140 size
= find_stub_size_and_template (stub_entry
->stub_type
,
3141 &template_sequence
, &template_size
);
3142 stub_entry
->stub_size
= size
;
3143 stub_entry
->stub_template
= template_sequence
;
3144 stub_entry
->stub_template_size
= template_size
;
3146 size
= (size
+ 7) & ~7;
3147 stub_entry
->stub_sec
->size
+= size
;
3151 /* Add a new stub entry to the stub hash. Not all fields of the new
3152 stub entry are initialised. */
3154 static struct elf32_csky_stub_hash_entry
*
3155 elf32_csky_add_stub (const char *stub_name
,
3157 struct csky_elf_link_hash_table
*htab
)
3161 struct elf32_csky_stub_hash_entry
*stub_entry
;
3163 stub_sec
= elf32_csky_create_or_find_stub_sec (&link_sec
, section
, htab
);
3164 if (stub_sec
== NULL
)
3167 /* Enter this entry into the linker stub hash table. */
3168 stub_entry
= csky_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
3170 if (stub_entry
== NULL
)
3172 _bfd_error_handler (_("%pB: cannot create stub entry %s"),
3173 section
->owner
, stub_name
);
3177 stub_entry
->stub_sec
= stub_sec
;
3178 stub_entry
->stub_offset
= 0;
3179 stub_entry
->id_sec
= link_sec
;
3184 /* Determine and set the size of the stub section for a final link.
3185 The basic idea here is to examine all the relocations looking for
3186 PC-relative calls to a target that is unreachable with a "bsr"
3190 elf32_csky_size_stubs (bfd
*output_bfd
,
3192 struct bfd_link_info
*info
,
3193 bfd_signed_vma group_size
,
3194 asection
*(*add_stub_section
) (const char*, asection
*),
3195 void (*layout_sections_again
) (void))
3197 bfd_size_type stub_group_size
;
3198 bfd_boolean stubs_always_after_branch
;
3199 struct csky_elf_link_hash_table
*htab
= csky_elf_hash_table (info
);
3204 /* Propagate mach to stub bfd, because it may not have been
3205 finalized when we created stub_bfd. */
3206 bfd_set_arch_mach (stub_bfd
, bfd_get_arch (output_bfd
),
3207 bfd_get_mach (output_bfd
));
3209 /* Stash our params away. */
3210 htab
->stub_bfd
= stub_bfd
;
3211 htab
->add_stub_section
= add_stub_section
;
3212 htab
->layout_sections_again
= layout_sections_again
;
3213 stubs_always_after_branch
= group_size
< 0;
3216 stub_group_size
= -group_size
;
3218 stub_group_size
= group_size
;
3220 if (stub_group_size
== 1)
3221 /* The 'bsr' range in abiv2 is +-64MB has to be used as the
3222 default maximum size.
3223 This value is 128K less than that, which allows for 131072
3224 byte stubs. If we exceed that, then we will fail to link.
3225 The user will have to relink with an explicit group size
3227 stub_group_size
= 66977792;
3229 group_sections (htab
, stub_group_size
, stubs_always_after_branch
);
3234 unsigned int bfd_indx
;
3236 bfd_boolean stub_changed
= FALSE
;
3238 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
3240 input_bfd
= input_bfd
->link
.next
, bfd_indx
++)
3242 Elf_Internal_Shdr
*symtab_hdr
;
3244 Elf_Internal_Sym
*local_syms
= NULL
;
3246 /* We'll need the symbol table in a second. */
3247 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
3248 if (symtab_hdr
->sh_info
== 0)
3251 /* Walk over each section attached to the input bfd. */
3252 for (section
= input_bfd
->sections
;
3254 section
= section
->next
)
3256 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
3258 /* If there aren't any relocs, then there's nothing more
3260 if ((section
->flags
& SEC_RELOC
) == 0
3261 || section
->reloc_count
== 0
3262 || (section
->flags
& SEC_CODE
) == 0)
3265 /* If this section is a link-once section that will be
3266 discarded, then don't create any stubs. */
3267 if (section
->output_section
== NULL
3268 || section
->output_section
->owner
!= output_bfd
)
3271 /* Get the relocs. */
3272 internal_relocs
= _bfd_elf_link_read_relocs (input_bfd
,
3277 if (internal_relocs
== NULL
)
3278 goto error_ret_free_local
;
3280 /* Now examine each relocation. */
3281 irela
= internal_relocs
;
3282 irelaend
= irela
+ section
->reloc_count
;
3283 for (; irela
< irelaend
; irela
++)
3285 unsigned int r_type
, r_indx
;
3286 enum elf32_csky_stub_type stub_type
;
3287 struct elf32_csky_stub_hash_entry
*stub_entry
;
3290 bfd_vma destination
;
3291 struct csky_elf_link_hash_entry
*hash
;
3292 const char *sym_name
;
3294 const asection
*id_sec
;
3295 unsigned char st_type
;
3297 r_type
= ELF32_R_TYPE (irela
->r_info
);
3298 r_indx
= ELF32_R_SYM (irela
->r_info
);
3299 if (r_type
>= (unsigned int) R_CKCORE_MAX
)
3301 bfd_set_error (bfd_error_bad_value
);
3302 error_ret_free_internal
:
3303 if (elf_section_data (section
)->relocs
== NULL
)
3304 free (internal_relocs
);
3305 goto error_ret_free_local
;
3308 /* Only look for stubs on branch instructions. */
3309 if (r_type
!= (unsigned int) R_CKCORE_PCREL_IMM26BY2
)
3311 /* Now determine the call target, its name, value,
3318 if (r_indx
< symtab_hdr
->sh_info
)
3320 /* It's a local symbol. */
3321 Elf_Internal_Sym
*sym
;
3322 Elf_Internal_Shdr
*hdr
;
3323 if (local_syms
== NULL
)
3325 (Elf_Internal_Sym
*) symtab_hdr
->contents
;
3326 if (local_syms
== NULL
)
3329 bfd_elf_get_elf_syms (input_bfd
,
3331 symtab_hdr
->sh_info
,
3332 0, NULL
, NULL
, NULL
);
3333 if (local_syms
== NULL
)
3334 goto error_ret_free_internal
;
3336 sym
= local_syms
+ r_indx
;
3337 hdr
= elf_elfsections (input_bfd
)[sym
->st_shndx
];
3338 sym_sec
= hdr
->bfd_section
;
3340 /* This is an undefined symbol. It can never
3343 if (ELF_ST_TYPE (sym
->st_info
) != STT_SECTION
)
3344 sym_value
= sym
->st_value
;
3345 destination
= (sym_value
+ irela
->r_addend
3346 + sym_sec
->output_offset
3347 + sym_sec
->output_section
->vma
);
3348 st_type
= ELF_ST_TYPE (sym
->st_info
);
3350 bfd_elf_string_from_elf_section (input_bfd
,
3351 symtab_hdr
->sh_link
,
3356 /* It's an external symbol. */
3358 e_indx
= r_indx
- symtab_hdr
->sh_info
;
3359 hash
= ((struct csky_elf_link_hash_entry
*)
3360 elf_sym_hashes (input_bfd
)[e_indx
]);
3362 while (hash
->elf
.root
.type
== bfd_link_hash_indirect
3363 || hash
->elf
.root
.type
== bfd_link_hash_warning
)
3364 hash
= ((struct csky_elf_link_hash_entry
*)
3365 hash
->elf
.root
.u
.i
.link
);
3366 if (hash
->elf
.root
.type
== bfd_link_hash_defined
3367 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
3369 sym_sec
= hash
->elf
.root
.u
.def
.section
;
3370 sym_value
= hash
->elf
.root
.u
.def
.value
;
3372 struct csky_elf_link_hash_table
*globals
=
3373 csky_elf_hash_table (info
);
3374 /* FIXME For a destination in a shared library. */
3375 if (globals
->elf
.splt
!= NULL
&& hash
!= NULL
3376 && hash
->elf
.plt
.offset
!= (bfd_vma
) -1)
3378 else if (sym_sec
->output_section
!= NULL
)
3379 destination
= (sym_value
+ irela
->r_addend
3380 + sym_sec
->output_offset
3381 + sym_sec
->output_section
->vma
);
3383 else if (hash
->elf
.root
.type
== bfd_link_hash_undefined
3384 || (hash
->elf
.root
.type
3385 == bfd_link_hash_undefweak
))
3386 /* FIXME For a destination in a shared library. */
3390 bfd_set_error (bfd_error_bad_value
);
3391 goto error_ret_free_internal
;
3393 st_type
= ELF_ST_TYPE (hash
->elf
.type
);
3394 sym_name
= hash
->elf
.root
.root
.string
;
3398 /* Determine what (if any) linker stub is needed. */
3399 stub_type
= csky_type_of_stub (info
, section
, irela
,
3401 destination
, sym_sec
,
3402 input_bfd
, sym_name
);
3403 if (stub_type
== csky_stub_none
)
3406 /* Support for grouping stub sections. */
3407 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
3409 /* Get the name of this stub. */
3410 stub_name
= elf32_csky_stub_name (id_sec
, sym_sec
, hash
,
3413 goto error_ret_free_internal
;
3414 /* We've either created a stub for this reloc already,
3415 or we are about to. */
3417 = csky_stub_hash_lookup (&htab
->stub_hash_table
,
3420 if (stub_entry
!= NULL
)
3422 /* The proper stub has already been created. */
3424 stub_entry
->target_value
= sym_value
;
3427 stub_entry
= elf32_csky_add_stub (stub_name
, section
,
3429 if (stub_entry
== NULL
)
3432 goto error_ret_free_internal
;
3434 stub_entry
->target_value
= sym_value
;
3435 stub_entry
->target_section
= sym_sec
;
3436 stub_entry
->stub_type
= stub_type
;
3437 stub_entry
->h
= hash
;
3438 stub_entry
->st_type
= st_type
;
3440 if (sym_name
== NULL
)
3441 sym_name
= "unnamed";
3442 stub_entry
->output_name
=
3443 bfd_alloc (htab
->stub_bfd
,
3444 (sizeof (STUB_ENTRY_NAME
)
3445 + strlen (sym_name
)));
3446 if (stub_entry
->output_name
== NULL
)
3449 goto error_ret_free_internal
;
3451 sprintf (stub_entry
->output_name
, STUB_ENTRY_NAME
,
3453 stub_changed
= TRUE
;
3457 /* We're done with the internal relocs, free them. */
3458 if (elf_section_data (section
)->relocs
== NULL
)
3459 free (internal_relocs
);
3464 /* OK, we've added some stubs. Find out the new size of the
3466 for (stub_sec
= htab
->stub_bfd
->sections
;
3468 stub_sec
= stub_sec
->next
)
3470 /* Ignore non-stub sections. */
3471 if (!strstr (stub_sec
->name
, STUB_SUFFIX
))
3475 bfd_hash_traverse (&htab
->stub_hash_table
, csky_size_one_stub
, htab
);
3476 /* Ask the linker to do its stuff. */
3477 (*htab
->layout_sections_again
) ();
3481 error_ret_free_local
:
3486 csky_build_one_stub (struct bfd_hash_entry
*gen_entry
,
3490 struct elf32_csky_stub_hash_entry
*stub_entry
;
3491 struct bfd_link_info
*info
;
3498 const insn_sequence
*template_sequence
;
3500 struct csky_elf_link_hash_table
* globals
;
3501 int stub_reloc_idx
[MAXRELOCS
] = {-1, -1};
3502 int stub_reloc_offset
[MAXRELOCS
] = {0, 0};
3504 struct elf_link_hash_entry
*h
= NULL
;
3506 /* Massage our args to the form they really have. */
3507 stub_entry
= (struct elf32_csky_stub_hash_entry
*)gen_entry
;
3508 info
= (struct bfd_link_info
*) in_arg
;
3510 /* Fail if the target section could not be assigned to an output
3511 section. The user should fix his linker script. */
3512 if (stub_entry
->target_section
->output_section
== NULL
3513 && info
->non_contiguous_regions
)
3514 info
->callbacks
->einfo (_("%F%P: Could not assign '%pA' to an output section. "
3515 "Retry without --enable-non-contiguous-regions.\n"),
3516 stub_entry
->target_section
);
3518 globals
= csky_elf_hash_table (info
);
3519 if (globals
== NULL
)
3521 stub_sec
= stub_entry
->stub_sec
;
3523 /* Make a note of the offset within the stubs for this entry. */
3524 stub_entry
->stub_offset
= stub_sec
->size
;
3525 loc
= stub_sec
->contents
+ stub_entry
->stub_offset
;
3527 stub_bfd
= stub_sec
->owner
;
3529 /* This is the address of the stub destination. */
3530 h
= &stub_entry
->h
->elf
;
3531 if (sym_must_create_stub (h
, info
)
3532 && !(bfd_link_pic (info
)
3533 && h
->root
.type
== bfd_link_hash_defweak
3535 && !h
->def_dynamic
))
3538 sym_value
= (stub_entry
->target_value
3539 + stub_entry
->target_section
->output_offset
3540 + stub_entry
->target_section
->output_section
->vma
);
3542 template_sequence
= stub_entry
->stub_template
;
3543 template_size
= stub_entry
->stub_template_size
;
3546 for (i
= 0; i
< template_size
; i
++)
3547 switch (template_sequence
[i
].type
)
3550 bfd_put_16 (stub_bfd
, (bfd_vma
) template_sequence
[i
].data
,
3555 csky_put_insn_32 (stub_bfd
, (bfd_vma
) template_sequence
[i
].data
,
3560 bfd_put_32 (stub_bfd
, (bfd_vma
) template_sequence
[i
].data
,
3562 stub_reloc_idx
[nrelocs
] = i
;
3563 stub_reloc_offset
[nrelocs
++] = size
;
3570 stub_sec
->size
+= size
;
3572 /* Stub size has already been computed in csky_size_one_stub. Check
3574 BFD_ASSERT (size
== stub_entry
->stub_size
);
3576 /* Assume there is at least one and at most MAXRELOCS entries to relocate
3578 BFD_ASSERT (nrelocs
!= 0 && nrelocs
<= MAXRELOCS
);
3580 for (i
= 0; i
< nrelocs
; i
++)
3582 if (sym_must_create_stub (h
, info
))
3584 Elf_Internal_Rela outrel
;
3585 asection
* sreloc
= globals
->elf
.srelgot
;
3587 outrel
.r_offset
= stub_entry
->stub_offset
+ stub_reloc_offset
[i
];
3589 ELF32_R_INFO (h
->dynindx
,
3590 template_sequence
[stub_reloc_idx
[i
]].r_type
);
3591 outrel
.r_addend
= template_sequence
[stub_reloc_idx
[i
]].reloc_addend
;
3593 loc
= sreloc
->contents
;
3594 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
3597 bfd_elf32_swap_reloca_out (info
->output_bfd
, &outrel
, loc
);
3599 _bfd_final_link_relocate (elf32_csky_howto_from_type
3600 (template_sequence
[stub_reloc_idx
[i
]].r_type
),
3601 stub_bfd
, stub_sec
, stub_sec
->contents
,
3602 stub_entry
->stub_offset
+ stub_reloc_offset
[i
],
3603 sym_value
+ stub_entry
->target_addend
,
3604 template_sequence
[stub_reloc_idx
[i
]].reloc_addend
);
3611 /* Build all the stubs associated with the current output file. The
3612 stubs are kept in a hash table attached to the main linker hash
3613 table. We also set up the .plt entries for statically linked PIC
3614 functions here. This function is called via arm_elf_finish in the
3618 elf32_csky_build_stubs (struct bfd_link_info
*info
)
3621 struct bfd_hash_table
*table
;
3622 struct csky_elf_link_hash_table
*htab
;
3624 htab
= csky_elf_hash_table (info
);
3629 for (stub_sec
= htab
->stub_bfd
->sections
;
3631 stub_sec
= stub_sec
->next
)
3635 /* Ignore non-stub sections. */
3636 if (!strstr (stub_sec
->name
, STUB_SUFFIX
))
3639 /* Allocate memory to hold the linker stubs. */
3640 size
= stub_sec
->size
;
3641 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, size
);
3642 if (stub_sec
->contents
== NULL
&& size
!= 0)
3647 /* Build the stubs as directed by the stub hash table. */
3648 table
= &htab
->stub_hash_table
;
3649 bfd_hash_traverse (table
, csky_build_one_stub
, info
);
3654 /* Set up various things so that we can make a list of input sections
3655 for each output section included in the link. Returns -1 on error,
3656 0 when no stubs will be needed, and 1 on success. */
3659 elf32_csky_setup_section_lists (bfd
*output_bfd
,
3660 struct bfd_link_info
*info
)
3663 unsigned int bfd_count
;
3664 unsigned int top_id
, top_index
;
3666 asection
**input_list
, **list
;
3668 struct csky_elf_link_hash_table
*htab
= csky_elf_hash_table (info
);
3672 if (! is_elf_hash_table (htab
))
3675 /* Count the number of input BFDs and find the top input section id. */
3676 for (input_bfd
= info
->input_bfds
, bfd_count
= 0, top_id
= 0;
3678 input_bfd
= input_bfd
->link
.next
)
3681 for (section
= input_bfd
->sections
;
3683 section
= section
->next
)
3684 if (top_id
< section
->id
)
3685 top_id
= section
->id
;
3687 htab
->bfd_count
= bfd_count
;
3688 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
3689 htab
->stub_group
= bfd_zmalloc (amt
);
3690 if (htab
->stub_group
== NULL
)
3693 /* We can't use output_bfd->section_count here to find the top output
3694 section index as some sections may have been removed, and
3695 _bfd_strip_section_from_output doesn't renumber the indices. */
3696 for (section
= output_bfd
->sections
, top_index
= 0;
3698 section
= section
->next
)
3699 if (top_index
< section
->index
)
3700 top_index
= section
->index
;
3701 htab
->top_index
= top_index
;
3702 amt
= sizeof (asection
*) * (top_index
+ 1);
3703 input_list
= bfd_malloc (amt
);
3704 htab
->input_list
= input_list
;
3705 if (input_list
== NULL
)
3707 /* For sections we aren't interested in, mark their entries with a
3708 value we can check later. */
3709 list
= input_list
+ top_index
;
3711 *list
= bfd_abs_section_ptr
;
3712 while (list
-- != input_list
);
3713 for (section
= output_bfd
->sections
;
3715 section
= section
->next
)
3716 if ((section
->flags
& SEC_CODE
) != 0)
3717 input_list
[section
->index
] = NULL
;
3722 static bfd_reloc_status_type
3723 csky_relocate_contents (reloc_howto_type
*howto
,
3730 bfd_reloc_status_type flag
;
3731 unsigned int rightshift
= howto
->rightshift
;
3732 unsigned int bitpos
= howto
->bitpos
;
3734 /* If the size is negative, negate RELOCATION. This isn't very
3736 if (howto
->size
< 0)
3737 relocation
= -relocation
;
3739 /* FIXME: these macros should be defined at file head or head file head. */
3740 #define CSKY_INSN_ADDI_TO_SUBI 0x04000000
3741 #define CSKY_INSN_MOV_RTB 0xc41d4820 /* mov32 rx, r29, 0 */
3742 #define CSKY_INSN_MOV_RDB 0xc41c4820 /* mov32 rx, r28, 0 */
3743 #define CSKY_INSN_GET_ADDI_RZ(x) (((x) & 0x03e00000) >> 21)
3744 #define CSKY_INSN_SET_MOV_RZ(x) ((x) & 0x0000001f)
3745 #define CSKY_INSN_JSRI_TO_LRW 0xea9a0000
3746 #define CSKY_INSN_JSR_R26 0xe8fa0000
3748 /* Get the value we are going to relocate. */
3749 size
= bfd_get_reloc_size (howto
);
3756 x
= bfd_get_8 (input_bfd
, location
);
3759 x
= bfd_get_16 (input_bfd
, location
);
3762 if (need_reverse_bits
)
3764 x
= csky_get_insn_32 (input_bfd
, location
);
3766 if (R_CKCORE_DOFFSET_LO16
== howto
->type
)
3768 if ((signed) relocation
< 0)
3770 x
|= CSKY_INSN_ADDI_TO_SUBI
;
3771 relocation
= -relocation
;
3773 else if (0 == relocation
)
3774 x
= (CSKY_INSN_MOV_RDB
|
3775 CSKY_INSN_SET_MOV_RZ (CSKY_INSN_GET_ADDI_RZ (x
)));
3777 else if (R_CKCORE_TOFFSET_LO16
== howto
->type
)
3779 if ((signed) relocation
< 0)
3781 x
|= CSKY_INSN_ADDI_TO_SUBI
;
3782 relocation
= -relocation
;
3784 else if (0 == relocation
)
3785 x
= (CSKY_INSN_MOV_RTB
|
3786 CSKY_INSN_SET_MOV_RZ (CSKY_INSN_GET_ADDI_RZ (x
)));
3790 x
= bfd_get_32 (input_bfd
, location
);
3793 /* Check for overflow. FIXME: We may drop bits during the addition
3794 which we don't check for. We must either check at every single
3795 operation, which would be tedious, or we must do the computations
3796 in a type larger than bfd_vma, which would be inefficient. */
3797 flag
= bfd_reloc_ok
;
3798 if (howto
->complain_on_overflow
!= complain_overflow_dont
)
3807 /* Get the values to be added together. For signed and unsigned
3808 relocations, we assume that all values should be truncated to
3809 the size of an address. For bitfields, all the bits matter.
3810 See also bfd_check_overflow. */
3811 #define N_ONES(n) (((((bfd_vma) 1 << ((n) - 1)) - 1) << 1) | 1)
3812 fieldmask
= N_ONES (howto
->bitsize
);
3813 signmask
= ~fieldmask
;
3814 addrmask
= N_ONES (bfd_arch_bits_per_address (input_bfd
)) | fieldmask
;
3815 a
= (relocation
& addrmask
) >> rightshift
;
3816 if (read_content_substitute
)
3817 x
= read_content_substitute
;
3818 b
= (x
& howto
->src_mask
& addrmask
) >> bitpos
;
3820 switch (howto
->complain_on_overflow
)
3822 case complain_overflow_signed
:
3823 /* If any sign bits are set, all sign bits must be set.
3824 That is, A must be a valid negative address after
3826 signmask
= ~(fieldmask
>> 1);
3829 case complain_overflow_bitfield
:
3830 /* Much like the signed check, but for a field one bit
3831 wider. We allow a bitfield to represent numbers in the
3832 range -2**n to 2**n-1, where n is the number of bits in the
3833 field. Note that when bfd_vma is 32 bits, a 32-bit reloc
3834 can't overflow, which is exactly what we want. */
3836 if (ss
!= 0 && ss
!= ((addrmask
>> rightshift
) & signmask
))
3837 flag
= bfd_reloc_overflow
;
3838 /* We only need this next bit of code if the sign bit of B
3839 is below the sign bit of A. This would only happen if
3840 SRC_MASK had fewer bits than BITSIZE. Note that if
3841 SRC_MASK has more bits than BITSIZE, we can get into
3842 trouble; we would need to verify that B is in range, as
3843 we do for A above. */
3844 ss
= ((~howto
->src_mask
) >> 1) & howto
->src_mask
;
3847 /* Set all the bits above the sign bit. */
3850 /* Now we can do the addition. */
3853 /* See if the result has the correct sign. Bits above the
3854 sign bit are junk now; ignore them. If the sum is
3855 positive, make sure we did not have all negative inputs;
3856 if the sum is negative, make sure we did not have all
3857 positive inputs. The test below looks only at the sign
3858 bits, and it really just
3859 SIGN (A) == SIGN (B) && SIGN (A) != SIGN (SUM)
3861 We mask with addrmask here to explicitly allow an address
3862 wrap-around. The Linux kernel relies on it, and it is
3863 the only way to write assembler code which can run when
3864 loaded at a location 0x80000000 away from the location at
3865 which it is linked. */
3867 if (((~(a
^ b
)) & (a
^ sum
)) & signmask
& addrmask
)
3868 flag
= bfd_reloc_overflow
;
3870 case complain_overflow_unsigned
:
3871 /* Checking for an unsigned overflow is relatively easy:
3872 trim the addresses and add, and trim the result as well.
3873 Overflow is normally indicated when the result does not
3874 fit in the field. However, we also need to consider the
3875 case when, e.g., fieldmask is 0x7fffffff or smaller, an
3876 input is 0x80000000, and bfd_vma is only 32 bits; then we
3877 will get sum == 0, but there is an overflow, since the
3878 inputs did not fit in the field. Instead of doing a
3879 separate test, we can check for this by or-ing in the
3880 operands when testing for the sum overflowing its final
3882 sum
= (a
+ b
) & addrmask
;
3883 if ((a
| b
| sum
) & signmask
)
3884 flag
= bfd_reloc_overflow
;
3891 /* Put RELOCATION in the right bits. */
3892 relocation
>>= (bfd_vma
) rightshift
;
3894 if ((howto
->type
== R_CKCORE_DOFFSET_LO16
3895 || howto
->type
== R_CKCORE_TOFFSET_LO16
)
3897 /* Do nothing lsli32 rx, rz, 0. */
3901 /* Fir V1, all this relocation must be x -1. */
3902 if (howto
->type
== R_CKCORE_PCREL_IMM11BY2
3903 || howto
->type
== R_CKCORE_PCREL_JSR_IMM11BY2
3904 || howto
->type
== R_CKCORE_DOFFSET_LO16
3905 || howto
->type
== R_CKCORE_TOFFSET_LO16
)
3907 else if (howto
->type
== R_CKCORE_PCREL_IMM7BY4
)
3908 relocation
= (relocation
& 0x1f) + ((relocation
<< 3) & 0x300);
3909 else if (howto
->type
== R_CKCORE_PCREL_FLRW_IMM8BY4
)
3911 = ((relocation
<< 4) & 0xf0) + ((relocation
<< 17) & 0x1e00000);
3912 else if (howto
->type
== R_CKCORE_NOJSRI
)
3914 x
= (x
& howto
->dst_mask
) | CSKY_INSN_JSRI_TO_LRW
;
3916 csky_put_insn_32 (input_bfd
, CSKY_INSN_JSR_R26
, location
+ 4);
3919 relocation
<<= (bfd_vma
) bitpos
;
3920 /* Add RELOCATION to the right bits of X. */
3921 x
= ((x
& ~howto
->dst_mask
)
3922 | (((x
& howto
->src_mask
) + relocation
) & howto
->dst_mask
));
3924 /* Put the relocated value back in the object file. */
3930 bfd_put_8 (input_bfd
, x
, location
);
3933 bfd_put_16 (input_bfd
, x
, location
);
3936 if (need_reverse_bits
)
3937 csky_put_insn_32 (input_bfd
, x
, location
);
3939 bfd_put_32 (input_bfd
, x
, location
);
3945 /* Look up an entry in the stub hash. Stub entries are cached because
3946 creating the stub name takes a bit of time. */
3948 static struct elf32_csky_stub_hash_entry
*
3949 elf32_csky_get_stub_entry (const asection
*input_section
,
3950 const asection
*sym_sec
,
3951 struct elf_link_hash_entry
*hash
,
3952 const Elf_Internal_Rela
*rel
,
3953 struct csky_elf_link_hash_table
*htab
)
3955 struct elf32_csky_stub_hash_entry
*stub_entry
;
3956 struct csky_elf_link_hash_entry
*h
3957 = (struct csky_elf_link_hash_entry
*) hash
;
3958 const asection
*id_sec
;
3960 if ((input_section
->flags
& SEC_CODE
) == 0)
3963 /* If this input section is part of a group of sections sharing one
3964 stub section, then use the id of the first section in the group.
3965 Stub names need to include a section id, as there may well be
3966 more than one stub used to reach say, printf, and we need to
3967 distinguish between them. */
3968 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
3969 if (h
!= NULL
&& h
->stub_cache
!= NULL
3970 && h
->stub_cache
->h
== h
&& h
->stub_cache
->id_sec
== id_sec
)
3971 stub_entry
= h
->stub_cache
;
3975 stub_name
= elf32_csky_stub_name (id_sec
, sym_sec
, h
, rel
);
3976 if (stub_name
== NULL
)
3978 stub_entry
= csky_stub_hash_lookup (&htab
->stub_hash_table
,
3979 stub_name
, FALSE
, FALSE
);
3981 h
->stub_cache
= stub_entry
;
3988 static bfd_reloc_status_type
3989 csky_final_link_relocate (reloc_howto_type
*howto
,
3991 asection
*input_section
,
3999 /* Sanity check the address. */
4000 if (address
> bfd_get_section_limit (input_bfd
, input_section
))
4001 return bfd_reloc_outofrange
;
4003 /* This function assumes that we are dealing with a basic relocation
4004 against a symbol. We want to compute the value of the symbol to
4005 relocate to. This is just VALUE, the value of the symbol,
4006 plus ADDEND, any addend associated with the reloc. */
4007 relocation
= value
+ addend
;
4009 /* If the relocation is PC relative, we want to set RELOCATION to
4010 the distance between the symbol (currently in RELOCATION) and the
4011 location we are relocating. Some targets (e.g., i386-aout)
4012 arrange for the contents of the section to be the negative of the
4013 offset of the location within the section; for such targets
4014 pcrel_offset is FALSE. Other targets (e.g., m88kbcs or ELF)
4015 simply leave the contents of the section as zero; for such
4016 targets pcrel_offset is TRUE. If pcrel_offset is FALSE we do not
4017 need to subtract out the offset of the location within the
4018 section (which is just ADDRESS). */
4019 if (howto
->pc_relative
)
4021 relocation
-= (input_section
->output_section
->vma
4022 + input_section
->output_offset
);
4023 if (howto
->pcrel_offset
)
4024 relocation
-= address
;
4027 return csky_relocate_contents (howto
, input_bfd
, relocation
,
4028 contents
+ address
);
4032 /* Return the base VMA address which should be subtracted from real addresses
4033 when resolving @dtpoff relocation.
4034 This is PT_TLS segment p_vaddr. */
4037 dtpoff_base (struct bfd_link_info
*info
)
4039 /* If tls_sec is NULL, we should have signalled an error already. */
4040 if (elf_hash_table (info
)->tls_sec
== NULL
)
4042 return elf_hash_table (info
)->tls_sec
->vma
;
4045 /* Return the relocation value for @tpoff relocation
4046 if STT_TLS virtual address is ADDRESS. */
4049 tpoff (struct bfd_link_info
*info
, bfd_vma address
)
4051 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
4054 /* If tls_sec is NULL, we should have signalled an error already. */
4055 if (htab
->tls_sec
== NULL
)
4057 base
= align_power ((bfd_vma
) TCB_SIZE
, htab
->tls_sec
->alignment_power
);
4058 return address
- htab
->tls_sec
->vma
+ base
;
4061 /* Relocate a csky section. */
4064 csky_elf_relocate_section (bfd
* output_bfd
,
4065 struct bfd_link_info
* info
,
4067 asection
* input_section
,
4068 bfd_byte
* contents
,
4069 Elf_Internal_Rela
* relocs
,
4070 Elf_Internal_Sym
* local_syms
,
4071 asection
** local_sections
)
4073 Elf_Internal_Shdr
*symtab_hdr
;
4074 struct elf_link_hash_entry
**sym_hashes
;
4075 Elf_Internal_Rela
*rel
;
4076 Elf_Internal_Rela
*relend
;
4078 bfd_boolean ret
= TRUE
;
4079 struct csky_elf_link_hash_table
* htab
;
4080 bfd_vma
*local_got_offsets
= elf_local_got_offsets (input_bfd
);
4082 htab
= csky_elf_hash_table (info
);
4086 symtab_hdr
= & elf_symtab_hdr (input_bfd
);
4087 sym_hashes
= elf_sym_hashes (input_bfd
);
4090 relend
= relocs
+ input_section
->reloc_count
;
4091 for (; rel
< relend
; rel
++)
4093 enum elf_csky_reloc_type r_type
4094 = (enum elf_csky_reloc_type
) ELF32_R_TYPE (rel
->r_info
);
4095 unsigned long r_symndx
;
4096 reloc_howto_type
* howto
;
4097 Elf_Internal_Sym
* sym
;
4101 struct elf_link_hash_entry
* h
;
4102 bfd_vma addend
= (bfd_vma
)rel
->r_addend
;
4103 bfd_reloc_status_type r
= bfd_reloc_ok
;
4104 bfd_boolean unresolved_reloc
= FALSE
;
4105 int do_final_relocate
= TRUE
;
4106 bfd_boolean relative_reloc
= FALSE
;
4107 bfd_signed_vma disp
;
4109 /* Ignore these relocation types:
4110 R_CKCORE_GNU_VTINHERIT, R_CKCORE_GNU_VTENTRY. */
4111 if (r_type
== R_CKCORE_GNU_VTINHERIT
|| r_type
== R_CKCORE_GNU_VTENTRY
)
4114 if ((unsigned) r_type
>= (unsigned) R_CKCORE_MAX
)
4116 /* The r_type is error, not support it. */
4117 /* xgettext:c-format */
4118 _bfd_error_handler (_("%pB: unsupported relocation type: %#x"),
4120 bfd_set_error (bfd_error_bad_value
);
4125 howto
= &csky_elf_howto_table
[(int) r_type
];
4127 r_symndx
= ELF32_R_SYM(rel
->r_info
);
4131 unresolved_reloc
= FALSE
;
4133 if (r_symndx
< symtab_hdr
->sh_info
)
4135 /* Get symbol table entry. */
4136 sym
= local_syms
+ r_symndx
;
4137 sec
= local_sections
[r_symndx
];
4138 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
4139 addend
= (bfd_vma
)rel
->r_addend
;
4143 bfd_boolean warned
, ignored
;
4145 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
4146 r_symndx
, symtab_hdr
, sym_hashes
,
4148 unresolved_reloc
, warned
, ignored
);
4151 if (sec
!= NULL
&& discarded_section (sec
))
4153 /* For relocs against symbols from removed linkonce sections,
4154 or sections discarded by a linker script, we just want the
4155 section contents zeroed. Avoid any special processing.
4156 And if the symbol is referenced in '.csky_stack_size' section,
4157 set the address to SEC_DISCARDED(0xffffffff). */
4159 /* The .csky_stack_size section is just for callgraph. */
4160 if (strcmp (input_section
->name
, ".csky_stack_size") == 0)
4162 /* FIXME: it should define in head file. */
4163 #define SEC_DISCARDED 0xffffffff
4164 bfd_put_32 (input_bfd
, SEC_DISCARDED
, contents
+ rel
->r_offset
);
4171 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
4172 rel
, 1, relend
, howto
, 0,
4176 if (bfd_link_relocatable (info
))
4179 read_content_substitute
= 0;
4183 + (bfd_signed_vma
) addend
4184 - input_section
->output_section
->vma
4185 - input_section
->output_offset
4187 /* It is for ck8xx. */
4188 #define CSKY_INSN_BSR32 0xe0000000
4189 /* It is for ck5xx/ck6xx. */
4190 #define CSKY_INSN_BSR16 0xf800
4191 #define within_range(x, L) (-(1 << (L - 1)) < (x) && (x) < (1 << (L -1)) - 2)
4192 switch (howto
->type
)
4194 case R_CKCORE_PCREL_IMM18BY2
:
4195 /* When h is NULL, means the instruction written as
4197 if the highest bit is set, prevent the high 32bits
4198 turn to 0xffffffff when signed extern in 64bit
4200 if (h
== NULL
&& (addend
& 0x80000000))
4201 addend
&= 0xffffffff;
4204 case R_CKCORE_PCREL32
:
4207 case R_CKCORE_GOT12
:
4208 case R_CKCORE_PLT12
:
4209 case R_CKCORE_GOT_HI16
:
4210 case R_CKCORE_GOT_LO16
:
4211 case R_CKCORE_PLT_HI16
:
4212 case R_CKCORE_PLT_LO16
:
4213 case R_CKCORE_GOT32
:
4214 case R_CKCORE_GOT_IMM18BY4
:
4215 /* Relocation is to the entry for this symbol in the global
4217 BFD_ASSERT (htab
->elf
.sgot
!= NULL
);
4220 /* Global symbol is defined by other modules. */
4222 off
= h
->got
.offset
;
4223 dyn
= htab
->elf
.dynamic_sections_created
;
4224 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
4225 bfd_link_pic (info
), h
)
4226 || (bfd_link_pic (info
) && SYMBOL_REFERENCES_LOCAL (info
,h
))
4227 || (ELF_ST_VISIBILITY(h
->other
)
4228 && h
->root
.type
== bfd_link_hash_undefweak
))
4230 /* This is actually a static link, or it is a
4231 -Bsymbolic link and the symbol is defined
4232 locally, or the symbol was forced to be local
4233 because of a version file. We must initialize
4234 this entry in the global offset table. Since the
4235 offset must always be a multiple of 4, we use the
4236 least significant bit to record whether we have
4237 initialized it already.
4238 When doing a dynamic link, we create a .rela.dyn
4239 relocation entry to initialize the value. This
4240 is done in the finish_dynamic_symbol routine. FIXME */
4245 bfd_put_32 (output_bfd
, relocation
,
4246 htab
->elf
.sgot
->contents
+ off
);
4249 /* TRUE if relative relocation should be generated. GOT reference to
4250 global symbol in PIC will lead to dynamic symbol. It becomes a
4251 problem when "time" or "times" is defined as a variable in an
4252 executable, clashing with functions of the same name in libc. If a
4253 symbol isn't undefined weak symbol, don't make it dynamic in PIC and
4254 generate relative relocation. */
4255 #define GENERATE_RELATIVE_RELOC_P(INFO, H) \
4256 ((H)->dynindx == -1 \
4257 && !(H)->forced_local \
4258 && (H)->root.type != bfd_link_hash_undefweak \
4259 && bfd_link_pic (INFO))
4261 if (GENERATE_RELATIVE_RELOC_P (info
, h
))
4262 /* If this symbol isn't dynamic
4263 in PIC, generate R_CKCORE_RELATIVE here. */
4264 relative_reloc
= TRUE
;
4268 unresolved_reloc
= FALSE
;
4269 } /* End if h != NULL. */
4272 BFD_ASSERT (local_got_offsets
!= NULL
);
4273 off
= local_got_offsets
[r_symndx
];
4275 /* The offset must always be a multiple of 4. We use
4276 the least significant bit to record whether we have
4277 already generated the necessary reloc. */
4282 bfd_put_32 (output_bfd
, relocation
,
4283 htab
->elf
.sgot
->contents
+ off
);
4284 local_got_offsets
[r_symndx
] |= 1;
4285 if (bfd_link_pic (info
))
4286 relative_reloc
= TRUE
;
4292 Elf_Internal_Rela outrel
;
4295 srelgot
= htab
->elf
.srelgot
;
4296 BFD_ASSERT (srelgot
!= NULL
);
4299 = (htab
->elf
.sgot
->output_section
->vma
4300 + htab
->elf
.sgot
->output_offset
+ off
);
4301 outrel
.r_info
= ELF32_R_INFO (0, R_CKCORE_RELATIVE
);
4302 outrel
.r_addend
= relocation
;
4303 loc
= srelgot
->contents
;
4304 loc
+= (srelgot
->reloc_count
++ * sizeof (Elf32_External_Rela
));
4306 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
4308 relocation
= htab
->elf
.sgot
->output_offset
+ off
;
4311 case R_CKCORE_GOTOFF_IMM18
:
4312 case R_CKCORE_GOTOFF
:
4313 case R_CKCORE_GOTOFF_HI16
:
4314 case R_CKCORE_GOTOFF_LO16
:
4315 /* Relocation is relative to the start of the global offset
4317 /* Note that sgot->output_offset is not involved in this
4318 calculation. We always want the start of .got. If we
4319 defined _GLOBAL_OFFSET_TABLE in a different way, as is
4320 permitted by the ABI, we might have to change this
4322 relocation
-= htab
->elf
.sgot
->output_section
->vma
;
4325 case R_CKCORE_GOTPC
:
4326 case R_CKCORE_GOTPC_HI16
:
4327 case R_CKCORE_GOTPC_LO16
:
4328 /* Use global offset table as symbol value. */
4329 relocation
= htab
->elf
.sgot
->output_section
->vma
;
4331 unresolved_reloc
= FALSE
;
4334 case R_CKCORE_DOFFSET_IMM18
:
4335 case R_CKCORE_DOFFSET_IMM18BY2
:
4336 case R_CKCORE_DOFFSET_IMM18BY4
:
4338 asection
*sdata
= bfd_get_section_by_name (output_bfd
, ".data");
4339 relocation
-= sdata
->output_section
->vma
;
4343 case R_CKCORE_DOFFSET_LO16
:
4345 asection
*sdata
= bfd_get_section_by_name (output_bfd
, ".data");
4346 relocation
-= sdata
->output_section
->vma
;
4350 case R_CKCORE_TOFFSET_LO16
:
4352 asection
*stext
= bfd_get_section_by_name (output_bfd
, ".text");
4354 relocation
-= stext
->output_section
->vma
;
4358 case R_CKCORE_PLT_IMM18BY4
:
4359 case R_CKCORE_PLT32
:
4360 /* Relocation is to the entry for this symbol in the
4361 procedure linkage table. */
4363 /* Resolve a PLT32 reloc against a local symbol directly,
4364 without using the procedure linkage table. */
4368 if (h
->plt
.offset
== (bfd_vma
) -1 || htab
->elf
.splt
== NULL
)
4370 /* We didn't make a PLT entry for this symbol. This
4371 happens when statically linking PIC code, or when
4372 using -Bsymbolic. */
4373 if (h
->got
.offset
!= (bfd_vma
) -1)
4377 off
= h
->got
.offset
;
4378 dyn
= htab
->elf
.dynamic_sections_created
;
4379 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
4380 bfd_link_pic (info
), h
)
4381 || (bfd_link_pic (info
)
4382 && SYMBOL_REFERENCES_LOCAL (info
, h
))
4383 || (ELF_ST_VISIBILITY (h
->other
)
4384 && h
->root
.type
== bfd_link_hash_undefweak
))
4386 /* This is actually a static link, or it is a
4387 -Bsymbolic link and the symbol is defined
4388 locally, or the symbol was forced to be local
4389 because of a version file. We must initialize
4390 this entry in the global offset table. Since the
4391 offset must always be a multiple of 4, we use the
4392 least significant bit to record whether we have
4393 initialized it already.
4395 When doing a dynamic link, we create a .rela.dyn
4396 relocation entry to initialize the value. This
4397 is done in the finish_dynamic_symbol routine.
4404 if (GENERATE_RELATIVE_RELOC_P (info
, h
))
4405 relative_reloc
= TRUE
;
4408 bfd_put_32 (output_bfd
, relocation
,
4409 htab
->elf
.sgot
->contents
+ off
);
4414 Elf_Internal_Rela outrel
;
4417 srelgot
= htab
->elf
.srelgot
;
4418 BFD_ASSERT (srelgot
!= NULL
);
4421 = (htab
->elf
.sgot
->output_section
->vma
4422 + htab
->elf
.sgot
->output_offset
+ off
);
4423 outrel
.r_info
= ELF32_R_INFO (0, R_CKCORE_RELATIVE
);
4424 outrel
.r_addend
= relocation
;
4425 loc
= srelgot
->contents
;
4426 loc
+= (srelgot
->reloc_count
++
4427 * sizeof (Elf32_External_Rela
));
4429 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
4431 relocation
= off
+ htab
->elf
.sgot
->output_offset
;
4435 /* The relocation is the got offset. */
4436 if (bfd_csky_abi (output_bfd
) == CSKY_ABI_V2
)
4437 relocation
= (h
->plt
.offset
/ PLT_ENTRY_SIZE
+ 2) * 4;
4439 relocation
= (h
->plt
.offset
/ PLT_ENTRY_SIZE_P
+ 2) * 4;
4440 unresolved_reloc
= FALSE
;
4443 case R_CKCORE_PCREL_IMM26BY2
:
4444 case R_CKCORE_PCREL_JSR_IMM26BY2
:
4445 case R_CKCORE_PCREL_JSR_IMM11BY2
:
4446 case R_CKCORE_PCREL_IMM11BY2
:
4447 case R_CKCORE_CALLGRAPH
:
4448 /* Emit callgraph information first. */
4449 /* TODO: deal with callgraph. */
4450 if (ELF32_R_TYPE (rel
->r_info
) == R_CKCORE_CALLGRAPH
)
4452 /* Some reloc need further handling. */
4453 /* h == NULL means the symbol is a local symbol,
4454 r_symndx == 0 means the symbol is 'ABS' and
4455 the relocation is already handled in assemble,
4456 here just use for callgraph. */
4457 /* TODO: deal with callgraph. */
4458 if (h
== NULL
&& r_symndx
== 0)
4460 do_final_relocate
= FALSE
;
4464 /* Ignore weak references to undefined symbols. */
4465 if (h
!= NULL
&& h
->root
.type
== bfd_link_hash_undefweak
)
4467 do_final_relocate
= FALSE
;
4471 /* Using branch stub. */
4472 if (use_branch_stub
== TRUE
4473 && ELF32_R_TYPE (rel
->r_info
) == R_CKCORE_PCREL_IMM26BY2
)
4475 struct elf32_csky_stub_hash_entry
*stub_entry
= NULL
;
4476 if (sym_must_create_stub (h
, info
))
4477 stub_entry
= elf32_csky_get_stub_entry (input_section
,
4480 else if (disp
> BSR_MAX_FWD_BRANCH_OFFSET
4481 || disp
< BSR_MAX_BWD_BRANCH_OFFSET
)
4482 stub_entry
= elf32_csky_get_stub_entry (input_section
,
4485 if (stub_entry
!= NULL
)
4487 = (stub_entry
->stub_offset
4488 + stub_entry
->stub_sec
->output_offset
4489 + stub_entry
->stub_sec
->output_section
->vma
);
4494 || (h
->root
.type
== bfd_link_hash_defined
4495 && h
->dynindx
== -1)
4496 || ((h
->def_regular
&& !h
->def_dynamic
)
4497 && (h
->root
.type
!= bfd_link_hash_defweak
4498 || ! bfd_link_pic (info
))))
4500 if (ELF32_R_TYPE (rel
->r_info
) == R_CKCORE_PCREL_JSR_IMM26BY2
)
4502 if (within_range (disp
, 26))
4504 /* In range for BSR32. */
4505 howto
= &csky_elf_howto_table
[R_CKCORE_PCREL_IMM26BY2
];
4506 read_content_substitute
= CSKY_INSN_BSR32
;
4508 else if (bfd_csky_arch (output_bfd
) == CSKY_ARCH_810
)
4509 /* if bsr32 cannot reach, generate
4510 "lrw r25, label; jsr r25" instead of
4512 howto
= &csky_elf_howto_table
[R_CKCORE_NOJSRI
];
4513 } /* if ELF32_R_TYPE (rel->r_info)... */
4514 else if (ELF32_R_TYPE (rel
->r_info
)
4515 == R_CKCORE_PCREL_JSR_IMM11BY2
)
4517 if (within_range (disp
, 11))
4519 /* In range for BSR16. */
4520 howto
= &csky_elf_howto_table
[R_CKCORE_PCREL_IMM11BY2
];
4521 read_content_substitute
= CSKY_INSN_BSR16
;
4525 } /* else if h == NULL... */
4527 else if (bfd_csky_arch (output_bfd
) == CSKY_ARCH_810
4528 && (ELF32_R_TYPE (rel
->r_info
)
4529 == R_CKCORE_PCREL_JSR_IMM26BY2
))
4531 howto
= &csky_elf_howto_table
[R_CKCORE_NOJSRI
];
4534 /* Other situation, h->def_dynamic == 1,
4535 undefined_symbol when output file is shared object, etc. */
4536 /* Else fall through. */
4538 case R_CKCORE_ADDR_HI16
:
4539 case R_CKCORE_ADDR_LO16
:
4540 if (bfd_link_pic (info
)
4541 || (!bfd_link_pic (info
)
4545 && ((h
->def_dynamic
&& !h
->def_regular
)
4546 || (htab
->elf
.dynamic_sections_created
4547 && (h
->root
.type
== bfd_link_hash_undefweak
4548 || h
->root
.type
== bfd_link_hash_undefined
4549 || h
->root
.type
== bfd_link_hash_indirect
)))))
4551 Elf_Internal_Rela outrel
;
4552 bfd_boolean skip
, relocate
;
4555 /* When generating a shared object, these relocations
4556 are copied into the output file to be resolved at
4562 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
4564 if (outrel
.r_offset
== (bfd_vma
) -1)
4566 else if (outrel
.r_offset
== (bfd_vma
) -2)
4571 outrel
.r_offset
+= (input_section
->output_section
->vma
4572 + input_section
->output_offset
);
4574 memset (&outrel
, 0, sizeof (outrel
));
4577 && (!bfd_link_pic (info
)
4578 || (!SYMBOLIC_BIND (info
, h
)
4579 && h
->root
.type
== bfd_link_hash_defweak
)
4580 || !h
->def_regular
))
4582 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
4583 outrel
.r_addend
= rel
->r_addend
;
4587 /* This symbol is local, or marked to become local. */
4589 outrel
.r_info
= ELF32_R_INFO (0, r_type
);
4590 outrel
.r_addend
= relocation
+ rel
->r_addend
;
4592 loc
= htab
->elf
.srelgot
->contents
;
4593 loc
+= (htab
->elf
.srelgot
->reloc_count
++
4594 * sizeof (Elf32_External_Rela
));
4597 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
4599 /* If this reloc is against an external symbol, we do not
4600 want to diddle with the addend. Otherwise, we need to
4601 include the symbol value so that it becomes an addend
4602 for the dynamic reloc. */
4605 } /* if bfd_link_pic (info) ... */
4608 case R_CKCORE_ADDR32
:
4609 /* r_symndx will be zero only for relocs against symbols
4610 from removed linkonce sections, or sections discarded
4612 This relocation don't nedd to handle, the value will
4613 be set to SEC_DISCARDED(0xffffffff). */
4615 && strcmp (sec
->name
, ".csky_stack_size") == 0)
4617 do_final_relocate
= FALSE
;
4620 if (r_symndx
>= symtab_hdr
->sh_info
4622 && bfd_link_executable (info
))
4625 if (r_symndx
== 0 || (input_section
->flags
& SEC_ALLOC
) == 0)
4628 if (bfd_link_pic (info
)
4631 && ((h
->def_dynamic
&& !h
->def_regular
)
4632 || (htab
->elf
.dynamic_sections_created
4633 && (h
->root
.type
== bfd_link_hash_undefweak
4634 || h
->root
.type
== bfd_link_hash_undefined
4635 || h
->root
.type
== bfd_link_hash_indirect
)))))
4637 Elf_Internal_Rela outrel
;
4638 bfd_boolean skip
, relocate
;
4641 /* When generating a shared object, these relocations
4642 are copied into the output file to be resolved at
4648 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
4651 if (outrel
.r_offset
== (bfd_vma
) -1)
4653 else if (outrel
.r_offset
== (bfd_vma
) -2)
4659 outrel
.r_offset
+= (input_section
->output_section
->vma
4660 + input_section
->output_offset
);
4663 memset (&outrel
, 0, sizeof (outrel
));
4666 && (!bfd_link_pic (info
)
4667 || (!SYMBOLIC_BIND (info
, h
)
4668 && h
->root
.type
== bfd_link_hash_defweak
)
4669 || !h
->def_regular
))
4671 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
4672 outrel
.r_addend
= rel
->r_addend
;
4676 /* This symbol is local, or marked to become local. */
4677 outrel
.r_info
= ELF32_R_INFO (0, R_CKCORE_RELATIVE
);
4678 outrel
.r_addend
= relocation
+ rel
->r_addend
;
4681 loc
= htab
->elf
.srelgot
->contents
;
4682 loc
+= (htab
->elf
.srelgot
->reloc_count
++
4683 * sizeof (Elf32_External_Rela
));
4686 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
4688 /* If this reloc is against an external symbol, we do
4689 want to diddle with the addend. Otherwise, we need to
4690 include the symbol value so that it becomes an addend
4691 for the dynamic reloc. */
4697 case R_CKCORE_TLS_LDO32
:
4698 relocation
= relocation
- dtpoff_base (info
);
4701 case R_CKCORE_TLS_LDM32
:
4702 BFD_ASSERT (htab
->elf
.sgot
!= NULL
);
4703 off
= htab
->tls_ldm_got
.offset
;
4708 /* If we don't know the module number,
4709 create a relocation for it. */
4710 if (!bfd_link_executable (info
))
4712 Elf_Internal_Rela outrel
;
4715 BFD_ASSERT (htab
->elf
.srelgot
!= NULL
);
4716 outrel
.r_addend
= 0;
4718 = (htab
->elf
.sgot
->output_section
->vma
4719 + htab
->elf
.sgot
->output_offset
+ off
);
4720 outrel
.r_info
= ELF32_R_INFO (0, R_CKCORE_TLS_DTPMOD32
);
4721 bfd_put_32 (output_bfd
, outrel
.r_addend
,
4722 htab
->elf
.sgot
->contents
+ off
);
4724 loc
= htab
->elf
.srelgot
->contents
;
4725 loc
+= (htab
->elf
.srelgot
->reloc_count
++
4726 * sizeof (Elf32_External_Rela
));
4728 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
4731 bfd_put_32 (output_bfd
, 1,
4732 htab
->elf
.sgot
->contents
+ off
);
4733 htab
->tls_ldm_got
.offset
|= 1;
4736 = (htab
->elf
.sgot
->output_section
->vma
4737 + htab
->elf
.sgot
->output_offset
+ off
4738 - (input_section
->output_section
->vma
4739 + input_section
->output_offset
+ rel
->r_offset
));
4741 case R_CKCORE_TLS_LE32
:
4742 if (bfd_link_dll (info
))
4745 /* xgettext:c-format */
4746 (_("%pB(%pA+%#" PRIx64
"): %s relocation not permitted "
4747 "in shared object"),
4748 input_bfd
, input_section
, (uint64_t)rel
->r_offset
,
4753 relocation
= tpoff (info
, relocation
);
4755 case R_CKCORE_TLS_GD32
:
4756 case R_CKCORE_TLS_IE32
:
4761 BFD_ASSERT (htab
->elf
.sgot
!= NULL
);
4767 dyn
= htab
->elf
.dynamic_sections_created
;
4768 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
4769 bfd_link_pic (info
), h
)
4770 && (!bfd_link_pic (info
)
4771 || !SYMBOL_REFERENCES_LOCAL (info
, h
)))
4773 unresolved_reloc
= FALSE
;
4776 off
= h
->got
.offset
;
4777 tls_type
= ((struct csky_elf_link_hash_entry
*)h
)->tls_type
;
4781 BFD_ASSERT (local_got_offsets
!= NULL
);
4782 off
= local_got_offsets
[r_symndx
];
4783 tls_type
= csky_elf_local_got_tls_type (input_bfd
)[r_symndx
];
4786 BFD_ASSERT (tls_type
!= GOT_UNKNOWN
);
4792 bfd_boolean need_relocs
= FALSE
;
4793 Elf_Internal_Rela outrel
;
4794 bfd_byte
*loc
= NULL
;
4796 /* The GOT entries have not been initialized yet. Do it
4797 now, and emit any relocations. If both an IE GOT and a
4798 GD GOT are necessary, we emit the GD first. */
4799 if ((!bfd_link_executable (info
) || indx
!= 0)
4801 || (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
4802 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
4803 || h
->root
.type
!= bfd_link_hash_undefined
))
4806 BFD_ASSERT (htab
->elf
.srelgot
!= NULL
);
4808 loc
= htab
->elf
.srelgot
->contents
;
4809 loc
+= (htab
->elf
.srelgot
->reloc_count
4810 * sizeof (Elf32_External_Rela
));
4812 if (tls_type
& GOT_TLS_GD
)
4816 outrel
.r_addend
= 0;
4818 = (htab
->elf
.sgot
->output_section
->vma
4819 + htab
->elf
.sgot
->output_offset
4822 = ELF32_R_INFO (indx
, R_CKCORE_TLS_DTPMOD32
);
4823 bfd_put_32 (output_bfd
, outrel
.r_addend
,
4824 htab
->elf
.sgot
->contents
+ cur_off
);
4826 bfd_elf32_swap_reloca_out (output_bfd
,
4828 loc
+= sizeof (Elf32_External_Rela
);
4829 htab
->elf
.srelgot
->reloc_count
++;
4831 bfd_put_32 (output_bfd
,
4832 relocation
- dtpoff_base (info
),
4833 (htab
->elf
.sgot
->contents
4837 outrel
.r_addend
= 0;
4839 = ELF32_R_INFO (indx
, R_CKCORE_TLS_DTPOFF32
);
4840 outrel
.r_offset
+= 4;
4841 bfd_put_32 (output_bfd
, outrel
.r_addend
,
4842 (htab
->elf
.sgot
->contents
4846 R_CKCORE_TLS_DTPOFF32
);
4848 bfd_elf32_swap_reloca_out (output_bfd
,
4851 htab
->elf
.srelgot
->reloc_count
++;
4852 loc
+= sizeof (Elf32_External_Rela
);
4858 /* If are not emitting relocations for a
4859 general dynamic reference, then we must be in a
4860 static link or an executable link with the
4861 symbol binding locally. Mark it as belonging
4862 to module 1, the executable. */
4863 bfd_put_32 (output_bfd
, 1,
4864 htab
->elf
.sgot
->contents
+ cur_off
);
4865 bfd_put_32 (output_bfd
,
4866 relocation
- dtpoff_base (info
),
4867 htab
->elf
.sgot
->contents
4872 if (tls_type
& GOT_TLS_IE
)
4877 outrel
.r_addend
= relocation
- dtpoff_base (info
);
4879 outrel
.r_addend
= 0;
4881 = (htab
->elf
.sgot
->output_section
->vma
4882 + htab
->elf
.sgot
->output_offset
+ cur_off
);
4884 = ELF32_R_INFO (indx
, R_CKCORE_TLS_TPOFF32
);
4886 bfd_put_32 (output_bfd
, outrel
.r_addend
,
4887 htab
->elf
.sgot
->contents
+ cur_off
);
4889 bfd_elf32_swap_reloca_out (output_bfd
,
4891 htab
->elf
.srelgot
->reloc_count
++;
4892 loc
+= sizeof (Elf32_External_Rela
);
4895 bfd_put_32 (output_bfd
, tpoff (info
, relocation
),
4896 htab
->elf
.sgot
->contents
+ cur_off
);
4901 local_got_offsets
[r_symndx
] |= 1;
4903 if ((tls_type
& GOT_TLS_GD
) && howto
->type
!= R_CKCORE_TLS_GD32
)
4906 = (htab
->elf
.sgot
->output_section
->vma
4907 + htab
->elf
.sgot
->output_offset
+ off
4908 - (input_section
->output_section
->vma
4909 + input_section
->output_offset
4914 /* No substitution when final linking. */
4915 read_content_substitute
= 0;
4917 } /* End switch (howto->type). */
4919 /* Make sure 32-bit data in the text section will not be affected by
4920 our special endianness.
4921 However, this currently affects noting, since the ADDR32 howto type
4922 does no change with the data read. But we may need this mechanism in
4925 if (howto
->size
== 2
4926 && (howto
->type
== R_CKCORE_ADDR32
4927 || howto
->type
== R_CKCORE_PCREL32
4928 || howto
->type
== R_CKCORE_GOT32
4929 || howto
->type
== R_CKCORE_GOTOFF
4930 || howto
->type
== R_CKCORE_GOTPC
4931 || howto
->type
== R_CKCORE_PLT32
4932 || howto
->type
== R_CKCORE_TLS_LE32
4933 || howto
->type
== R_CKCORE_TLS_IE32
4934 || howto
->type
== R_CKCORE_TLS_LDM32
4935 || howto
->type
== R_CKCORE_TLS_GD32
4936 || howto
->type
== R_CKCORE_TLS_LDO32
4937 || howto
->type
== R_CKCORE_RELATIVE
))
4938 need_reverse_bits
= 0;
4940 need_reverse_bits
= 1;
4941 /* Do the final link. */
4942 if (howto
->type
!= R_CKCORE_PCREL_JSR_IMM11BY2
4943 && howto
->type
!= R_CKCORE_PCREL_JSR_IMM26BY2
4944 && howto
->type
!= R_CKCORE_CALLGRAPH
4945 && do_final_relocate
)
4946 r
= csky_final_link_relocate (howto
, input_bfd
, input_section
,
4947 contents
, rel
->r_offset
,
4948 relocation
, addend
);
4950 if (r
!= bfd_reloc_ok
)
4957 case bfd_reloc_overflow
:
4962 name
= bfd_elf_string_from_elf_section (input_bfd
,
4963 symtab_hdr
->sh_link
,
4968 name
= bfd_section_name (sec
);
4970 (*info
->callbacks
->reloc_overflow
)
4972 (h
? &h
->root
: NULL
),
4973 name
, howto
->name
, (bfd_vma
) 0,
4974 input_bfd
, input_section
, rel
->r_offset
);
4978 } /* End for (;rel < relend; rel++). */
4983 csky_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
4988 switch (note
->descsz
)
4992 /* Sizeof (struct elf_prstatus) on C-SKY V1 arch. */
4994 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
4995 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
4999 /* Sizeof (struct elf_prstatus) on C-SKY V1 arch. */
5001 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
5002 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
5007 /* Make a ".reg/999" section. */
5008 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
5009 size
, note
->descpos
+ offset
);
5013 csky_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
5015 switch (note
->descsz
)
5020 /* Sizeof (struct elf_prpsinfo) on linux csky. */
5022 elf_tdata (abfd
)->core
->program
5023 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 28, 16);
5024 elf_tdata (abfd
)->core
->command
5025 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 44, 80);
5028 /* Note that for some reason, a spurious space is tacked
5029 onto the end of the args in some (at least one anyway)
5030 implementations, so strip it off if it exists. */
5032 char *command
= elf_tdata (abfd
)->core
->command
;
5033 int n
= strlen (command
);
5035 if (0 < n
&& command
[n
- 1] == ' ')
5036 command
[n
- 1] = '\0';
5042 /* End of external entry points for sizing and building linker stubs. */
5044 /* CPU-related basic API. */
5045 #define TARGET_BIG_SYM csky_elf32_be_vec
5046 #define TARGET_BIG_NAME "elf32-csky-big"
5047 #define TARGET_LITTLE_SYM csky_elf32_le_vec
5048 #define TARGET_LITTLE_NAME "elf32-csky-little"
5049 #define ELF_ARCH bfd_arch_csky
5050 #define ELF_MACHINE_CODE EM_CSKY
5051 #define ELF_MACHINE_ALT1 EM_CSKY_OLD
5052 #define ELF_MAXPAGESIZE 0x1000
5053 #define elf_info_to_howto csky_elf_info_to_howto
5054 #define elf_info_to_howto_rel NULL
5055 #define elf_backend_special_sections csky_elf_special_sections
5056 #define bfd_elf32_bfd_link_hash_table_create csky_elf_link_hash_table_create
5058 /* Target related API. */
5059 #define bfd_elf32_mkobject csky_elf_mkobject
5060 #define bfd_elf32_bfd_merge_private_bfd_data csky_elf_merge_private_bfd_data
5061 #define bfd_elf32_bfd_set_private_flags csky_elf_set_private_flags
5062 #define elf_backend_copy_indirect_symbol csky_elf_copy_indirect_symbol
5064 /* GC section related API. */
5065 #define elf_backend_can_gc_sections 1
5066 #define elf_backend_gc_mark_hook csky_elf_gc_mark_hook
5067 #define elf_backend_gc_mark_extra_sections elf32_csky_gc_mark_extra_sections
5069 /* Relocation related API. */
5070 #define elf_backend_reloc_type_class csky_elf_reloc_type_class
5071 #define bfd_elf32_bfd_reloc_type_lookup csky_elf_reloc_type_lookup
5072 #define bfd_elf32_bfd_reloc_name_lookup csky_elf_reloc_name_lookup
5073 #define elf_backend_ignore_discarded_relocs csky_elf_ignore_discarded_relocs
5074 #define elf_backend_relocate_section csky_elf_relocate_section
5075 #define elf_backend_check_relocs csky_elf_check_relocs
5077 /* Dynamic relocate related API. */
5078 #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
5079 #define elf_backend_adjust_dynamic_symbol csky_elf_adjust_dynamic_symbol
5080 #define elf_backend_size_dynamic_sections csky_elf_size_dynamic_sections
5081 #define elf_backend_finish_dynamic_symbol csky_elf_finish_dynamic_symbol
5082 #define elf_backend_finish_dynamic_sections csky_elf_finish_dynamic_sections
5083 #define elf_backend_rela_normal 1
5084 #define elf_backend_can_refcount 1
5085 #define elf_backend_plt_readonly 1
5086 #define elf_backend_want_got_sym 1
5087 #define elf_backend_want_dynrelro 1
5088 #define elf_backend_got_header_size 12
5089 #define elf_backend_want_got_plt 1
5091 /* C-SKY coredump support. */
5092 #define elf_backend_grok_prstatus csky_elf_grok_prstatus
5093 #define elf_backend_grok_psinfo csky_elf_grok_psinfo
5095 #include "elf32-target.h"