1 /* Meta support for 32-bit ELF
2 Copyright (C) 2013-2016 Free Software Foundation, Inc.
3 Contributed by Imagination Technologies Ltd.
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. */
26 #include "elf32-metag.h"
27 #include "elf/metag.h"
29 #define GOT_ENTRY_SIZE 4
30 #define ELF_DYNAMIC_INTERPRETER "/lib/ld-uClibc.so.0"
34 1 - with GOT offset */
35 #define METAG_ELF_ABI_VERSION 1
37 static const unsigned int plt0_entry[] =
39 0x02000005, /* MOVT D0Re0, #HI(GOT+4) */
40 0x02000000, /* ADD D0Re0, D0Re0, #LO(GOT+4) */
41 0xb70001e3, /* SETL [A0StP++], D0Re0, D1Re0 */
42 0xc600012a, /* GETD PC, [D0Re0+#4] */
46 static const unsigned int plt0_pic_entry[] =
48 0x82900001, /* ADDT A0.2, CPC0, #0 */
49 0x82100000, /* ADD A0.2, A0.2, #0 */
50 0xa3100c20, /* MOV D0Re0, A0.2 */
51 0xb70001e3, /* SETL [A0StP++], D0Re0, D1Re0 */
52 0xc600012a, /* GETD PC, [D0Re0+#4] */
55 static const unsigned int plt_entry[] =
57 0x82100005, /* MOVT A0.2, #HI(GOT+off) */
58 0x82100000, /* ADD A0.2, A0.2, #LO(GOT+off) */
59 0xc600806a, /* GETD PC, [A0.2] */
60 0x03000004, /* MOV D1Re0, #LO(offset) */
61 0xa0000000 /* B PLT0 */
64 static const unsigned int plt_pic_entry[] =
66 0x82900001, /* ADDT A0.2, CPC0, #HI(GOT+off) */
67 0x82100000, /* ADD A0.2, A0.2, #LO(GOT+off) */
68 0xc600806a, /* GETD PC, [A0.2] */
69 0x03000004, /* MOV D1Re0, #LO(offset) */
70 0xa0000000 /* B PLT0 */
73 /* Variable names follow a coding style.
74 Please follow this (Apps Hungarian) style:
76 Structure/Variable Prefix
77 elf_link_hash_table "etab"
78 elf_link_hash_entry "eh"
80 elf_metag_link_hash_table "htab"
81 elf_metag_link_hash_entry "hh"
83 bfd_link_hash_table "btab"
84 bfd_link_hash_entry "bh"
86 bfd_hash_table containing stubs "bstab"
87 elf_metag_stub_hash_entry "hsh"
89 elf_metag_dyn_reloc_entry "hdh"
91 Always remember to use GNU Coding Style. */
93 #define PLT_ENTRY_SIZE sizeof(plt_entry)
95 static reloc_howto_type elf_metag_howto_table[] =
97 /* High order 16 bit absolute. */
98 HOWTO (R_METAG_HIADDR16, /* type */
100 2, /* size (0 = byte, 1 = short, 2 = long) */
102 FALSE, /* pc_relative */
104 complain_overflow_dont, /* complain_on_overflow */
105 bfd_elf_generic_reloc, /* special_function */
106 "R_METAG_HIADDR16", /* name */
107 FALSE, /* partial_inplace */
109 0x0007fff8, /* dst_mask */
110 FALSE), /* pcrel_offset */
112 /* Low order 16 bit absolute. */
113 HOWTO (R_METAG_LOADDR16, /* type */
115 2, /* size (0 = byte, 1 = short, 2 = long) */
117 FALSE, /* pc_relative */
119 complain_overflow_dont,/* complain_on_overflow */
120 bfd_elf_generic_reloc, /* special_function */
121 "R_METAG_LOADDR16", /* name */
122 FALSE, /* partial_inplace */
124 0x0007fff8, /* dst_mask */
125 FALSE), /* pcrel_offset */
127 /* 32 bit absolute. */
128 HOWTO (R_METAG_ADDR32, /* type */
130 2, /* size (0 = byte, 1 = short, 2 = long) */
132 FALSE, /* pc_relative */
134 complain_overflow_bitfield, /* complain_on_overflow */
135 bfd_elf_generic_reloc, /* special_function */
136 "R_METAG_ADDR32", /* name */
137 FALSE, /* partial_inplace */
138 0x00000000, /* src_mask */
139 0xffffffff, /* dst_mask */
140 FALSE), /* pcrel_offset */
143 HOWTO (R_METAG_NONE, /* type */
145 3, /* size (0 = byte, 1 = short, 2 = long) */
147 FALSE, /* pc_relative */
149 complain_overflow_dont, /* complain_on_overflow */
150 bfd_elf_generic_reloc, /* special_function */
151 "R_METAG_NONE", /* name */
152 FALSE, /* partial_inplace */
155 FALSE), /* pcrel_offset */
157 /* 19 bit pc relative */
158 HOWTO (R_METAG_RELBRANCH, /* type */
160 2, /* size (0 = byte, 1 = short, 2 = long) */
162 TRUE, /* pc_relative */
164 complain_overflow_signed, /* complain_on_overflow */
165 bfd_elf_generic_reloc, /* special_function */
166 "R_METAG_RELBRANCH", /* name */
167 FALSE, /* partial_inplace */
169 0x00ffffe0, /* dst_mask */
170 FALSE), /* pcrel_offset */
173 HOWTO (R_METAG_GETSETOFF, /* type */
175 1, /* size (0 = byte, 1 = short, 2 = long) */
177 FALSE, /* pc_relative */
179 complain_overflow_dont, /* complain_on_overflow */
180 bfd_elf_generic_reloc, /* special_function */
181 "R_METAG_GETSETOFF", /* name */
182 FALSE, /* partial_inplace */
185 FALSE), /* pcrel_offset */
212 HOWTO (R_METAG_GNU_VTINHERIT, /* type */
214 2, /* size (0 = byte, 1 = short, 2 = long) */
216 FALSE, /* pc_relative */
218 complain_overflow_dont, /* complain_on_overflow */
219 NULL, /* special_function */
220 "R_METAG_GNU_VTINHERIT", /* name */
221 FALSE, /* partial_inplace */
224 FALSE), /* pcrel_offset */
226 HOWTO (R_METAG_GNU_VTENTRY, /* type */
228 2, /* size (0 = byte, 1 = short, 2 = long) */
230 FALSE, /* pc_relative */
232 complain_overflow_dont, /* complain_on_overflow */
233 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
234 "R_METAG_GNU_VTENTRY", /* name */
235 FALSE, /* partial_inplace */
238 FALSE), /* pcrel_offset */
240 /* High order 16 bit GOT offset */
241 HOWTO (R_METAG_HI16_GOTOFF, /* type */
243 2, /* size (0 = byte, 1 = short, 2 = long) */
245 FALSE, /* pc_relative */
247 complain_overflow_dont, /* complain_on_overflow */
248 bfd_elf_generic_reloc, /* special_function */
249 "R_METAG_HI16_GOTOFF", /* name */
250 FALSE, /* partial_inplace */
252 0x0007fff8, /* dst_mask */
253 FALSE), /* pcrel_offset */
255 /* Low order 16 bit GOT offset */
256 HOWTO (R_METAG_LO16_GOTOFF, /* type */
258 2, /* size (0 = byte, 1 = short, 2 = long) */
260 FALSE, /* pc_relative */
262 complain_overflow_dont, /* complain_on_overflow */
263 bfd_elf_generic_reloc, /* special_function */
264 "R_METAG_LO16_GOTOFF", /* name */
265 FALSE, /* partial_inplace */
267 0x0007fff8, /* dst_mask */
268 FALSE), /* pcrel_offset */
270 /* GET/SET GOT offset */
271 HOWTO (R_METAG_GETSET_GOTOFF, /* type */
273 1, /* size (0 = byte, 1 = short, 2 = long) */
275 FALSE, /* pc_relative */
277 complain_overflow_dont, /* complain_on_overflow */
278 bfd_elf_generic_reloc, /* special_function */
279 "R_METAG_GETSET_GOTOFF", /* name */
280 FALSE, /* partial_inplace */
283 FALSE), /* pcrel_offset */
285 /* GET/SET GOT relative */
286 HOWTO (R_METAG_GETSET_GOT, /* type */
288 1, /* size (0 = byte, 1 = short, 2 = long) */
290 FALSE, /* pc_relative */
292 complain_overflow_dont, /* complain_on_overflow */
293 bfd_elf_generic_reloc, /* special_function */
294 "R_METAG_GETSET_GOT", /* name */
295 FALSE, /* partial_inplace */
298 FALSE), /* pcrel_offset */
300 /* High order 16 bit GOT reference */
301 HOWTO (R_METAG_HI16_GOTPC, /* type */
303 2, /* size (0 = byte, 1 = short, 2 = long) */
305 FALSE, /* pc_relative */
307 complain_overflow_dont, /* complain_on_overflow */
308 bfd_elf_generic_reloc, /* special_function */
309 "R_METAG_HI16_GOTPC", /* name */
310 FALSE, /* partial_inplace */
312 0x0007fff8, /* dst_mask */
313 FALSE), /* pcrel_offset */
315 /* Low order 16 bit GOT reference */
316 HOWTO (R_METAG_LO16_GOTPC, /* type */
318 2, /* size (0 = byte, 1 = short, 2 = long) */
320 FALSE, /* pc_relative */
322 complain_overflow_dont, /* complain_on_overflow */
323 bfd_elf_generic_reloc, /* special_function */
324 "R_METAG_LO16_GOTPC", /* name */
325 FALSE, /* partial_inplace */
327 0x0007fff8, /* dst_mask */
328 FALSE), /* pcrel_offset */
330 /* High order 16 bit PLT */
331 HOWTO (R_METAG_HI16_PLT, /* type */
333 2, /* size (0 = byte, 1 = short, 2 = long) */
335 FALSE, /* pc_relative */
337 complain_overflow_dont, /* complain_on_overflow */
338 bfd_elf_generic_reloc, /* special_function */
339 "R_METAG_HI16_PLT", /* name */
340 FALSE, /* partial_inplace */
342 0x0007fff8, /* dst_mask */
343 FALSE), /* pcrel_offset */
345 /* Low order 16 bit PLT */
346 HOWTO (R_METAG_LO16_PLT, /* type */
348 2, /* size (0 = byte, 1 = short, 2 = long) */
350 FALSE, /* pc_relative */
352 complain_overflow_dont, /* complain_on_overflow */
353 bfd_elf_generic_reloc, /* special_function */
354 "R_METAG_LO16_PLT", /* name */
355 FALSE, /* partial_inplace */
357 0xffffffff, /* dst_mask */
358 FALSE), /* pcrel_offset */
360 HOWTO (R_METAG_RELBRANCH_PLT, /* type */
362 2, /* size (0 = byte, 1 = short, 2 = long) */
364 TRUE, /* pc_relative */
366 complain_overflow_signed, /* complain_on_overflow */
367 bfd_elf_generic_reloc, /* special_function */
368 "R_METAG_RELBRANCH_PLT", /* name */
369 FALSE, /* partial_inplace */
371 0x00ffffe0, /* dst_mask */
372 FALSE), /* pcrel_offset */
374 /* Dummy relocs used by the linker internally. */
375 HOWTO (R_METAG_GOTOFF, /* type */
377 2, /* size (0 = byte, 1 = short, 2 = long) */
379 FALSE, /* pc_relative */
381 complain_overflow_bitfield, /* complain_on_overflow */
382 bfd_elf_generic_reloc, /* special_function */
383 "R_METAG_GOTOFF", /* name */
384 FALSE, /* partial_inplace */
385 0xffffffff, /* src_mask */
386 0xffffffff, /* dst_mask */
387 FALSE), /* pcrel_offset */
389 HOWTO (R_METAG_PLT, /* type */
391 2, /* size (0 = byte, 1 = short, 2 = long) */
393 FALSE, /* pc_relative */
395 complain_overflow_bitfield, /* complain_on_overflow */
396 bfd_elf_generic_reloc, /* special_function */
397 "R_METAG_GOTOFF", /* name */
398 FALSE, /* partial_inplace */
399 0xffffffff, /* src_mask */
400 0xffffffff, /* dst_mask */
401 FALSE), /* pcrel_offset */
403 /* This is used only by the dynamic linker. The symbol should exist
404 both in the object being run and in some shared library. The
405 dynamic linker copies the data addressed by the symbol from the
406 shared library into the object, because the object being
407 run has to have the data at some particular address. */
408 HOWTO (R_METAG_COPY, /* type */
410 2, /* size (0 = byte, 1 = short, 2 = long) */
412 FALSE, /* pc_relative */
414 complain_overflow_bitfield, /* complain_on_overflow */
415 bfd_elf_generic_reloc, /* special_function */
416 "R_METAG_COPY", /* name */
417 FALSE, /* partial_inplace */
418 0xffffffff, /* src_mask */
419 0xffffffff, /* dst_mask */
420 FALSE), /* pcrel_offset */
422 /* Marks a procedure linkage table entry for a symbol. */
423 HOWTO (R_METAG_JMP_SLOT, /* type */
425 2, /* size (0 = byte, 1 = short, 2 = long) */
427 FALSE, /* pc_relative */
429 complain_overflow_bitfield, /* complain_on_overflow */
430 bfd_elf_generic_reloc, /* special_function */
431 "R_METAG_JMP_SLOT", /* name */
432 FALSE, /* partial_inplace */
433 0xffffffff, /* src_mask */
434 0xffffffff, /* dst_mask */
435 FALSE), /* pcrel_offset */
437 /* Used only by the dynamic linker. When the object is run, this
438 longword is set to the load address of the object, plus the
440 HOWTO (R_METAG_RELATIVE, /* type */
442 2, /* size (0 = byte, 1 = short, 2 = long) */
444 FALSE, /* pc_relative */
446 complain_overflow_bitfield, /* complain_on_overflow */
447 bfd_elf_generic_reloc, /* special_function */
448 "R_METAG_RELATIVE", /* name */
449 FALSE, /* partial_inplace */
450 0xffffffff, /* src_mask */
451 0xffffffff, /* dst_mask */
452 FALSE), /* pcrel_offset */
454 HOWTO (R_METAG_GLOB_DAT, /* type */
456 2, /* size (0 = byte, 1 = short, 2 = long) */
458 FALSE, /* pc_relative */
460 complain_overflow_bitfield, /* complain_on_overflow */
461 bfd_elf_generic_reloc, /* special_function */
462 "R_METAG_GLOB_DAT", /* name */
463 FALSE, /* partial_inplace */
464 0xffffffff, /* src_mask */
465 0xffffffff, /* dst_mask */
466 FALSE), /* pcrel_offset */
468 HOWTO (R_METAG_TLS_GD, /* type */
470 2, /* size (0 = byte, 1 = short, 2 = long) */
472 FALSE, /* pc_relative */
474 complain_overflow_dont, /* complain_on_overflow */
475 bfd_elf_generic_reloc, /* special_function */
476 "R_METAG_TLS_GD", /* name */
477 FALSE, /* partial_inplace */
479 0x0007fff8, /* dst_mask */
480 FALSE), /* pcrel_offset */
482 HOWTO (R_METAG_TLS_LDM, /* type */
484 2, /* size (0 = byte, 1 = short, 2 = long) */
486 FALSE, /* pc_relative */
488 complain_overflow_bitfield, /* complain_on_overflow */
489 bfd_elf_generic_reloc, /* special_function */
490 "R_METAG_TLS_LDM", /* name */
491 FALSE, /* partial_inplace */
493 0x0007fff8, /* dst_mask */
494 FALSE), /* pcrel_offset */
496 HOWTO (R_METAG_TLS_LDO_HI16, /* type */
498 2, /* size (0 = byte, 1 = short, 2 = long) */
500 FALSE, /* pc_relative */
502 complain_overflow_bitfield, /* complain_on_overflow */
503 bfd_elf_generic_reloc, /* special_function */
504 "R_METAG_TLS_LDO_HI16", /* name */
505 FALSE, /* partial_inplace */
507 0x0007fff8, /* dst_mask */
508 FALSE), /* pcrel_offset */
510 HOWTO (R_METAG_TLS_LDO_LO16, /* type */
512 2, /* size (0 = byte, 1 = short, 2 = long) */
514 FALSE, /* pc_relative */
516 complain_overflow_bitfield, /* complain_on_overflow */
517 bfd_elf_generic_reloc, /* special_function */
518 "R_METAG_TLS_LDO_LO16", /* name */
519 FALSE, /* partial_inplace */
521 0x0007fff8, /* dst_mask */
522 FALSE), /* pcrel_offset */
524 /* Dummy reloc used by the linker internally. */
525 HOWTO (R_METAG_TLS_LDO, /* type */
527 2, /* size (0 = byte, 1 = short, 2 = long) */
529 FALSE, /* pc_relative */
531 complain_overflow_bitfield, /* complain_on_overflow */
532 bfd_elf_generic_reloc, /* special_function */
533 "R_METAG_TLS_LDO", /* name */
534 FALSE, /* partial_inplace */
536 0x0007fff8, /* dst_mask */
537 FALSE), /* pcrel_offset */
539 HOWTO (R_METAG_TLS_IE, /* type */
541 2, /* size (0 = byte, 1 = short, 2 = long) */
543 FALSE, /* pc_relative */
545 complain_overflow_dont, /* complain_on_overflow */
546 bfd_elf_generic_reloc, /* special_function */
547 "R_METAG_TLS_IE", /* name */
548 FALSE, /* partial_inplace */
550 0x0007ff80, /* dst_mask */
551 FALSE), /* pcrel_offset */
553 /* Dummy reloc used by the linker internally. */
554 HOWTO (R_METAG_TLS_IENONPIC, /* type */
556 2, /* size (0 = byte, 1 = short, 2 = long) */
558 FALSE, /* pc_relative */
560 complain_overflow_dont, /* complain_on_overflow */
561 bfd_elf_generic_reloc, /* special_function */
562 "R_METAG_TLS_IENONPIC", /* name */
563 FALSE, /* partial_inplace */
565 0x0007fff8, /* dst_mask */
566 FALSE), /* pcrel_offset */
568 HOWTO (R_METAG_TLS_IENONPIC_HI16,/* type */
570 2, /* size (0 = byte, 1 = short, 2 = long) */
572 FALSE, /* pc_relative */
574 complain_overflow_dont, /* complain_on_overflow */
575 bfd_elf_generic_reloc, /* special_function */
576 "R_METAG_TLS_IENONPIC_HI16", /* name */
577 FALSE, /* partial_inplace */
579 0x0007fff8, /* dst_mask */
580 FALSE), /* pcrel_offset */
582 HOWTO (R_METAG_TLS_IENONPIC_LO16,/* type */
584 2, /* size (0 = byte, 1 = short, 2 = long) */
586 FALSE, /* pc_relative */
588 complain_overflow_dont, /* complain_on_overflow */
589 bfd_elf_generic_reloc, /* special_function */
590 "R_METAG_TLS_IENONPIC_LO16", /* name */
591 FALSE, /* partial_inplace */
593 0x0007fff8, /* dst_mask */
594 FALSE), /* pcrel_offset */
596 HOWTO (R_METAG_TLS_TPOFF, /* type */
598 2, /* size (0 = byte, 1 = short, 2 = long) */
600 FALSE, /* pc_relative */
602 complain_overflow_bitfield, /* complain_on_overflow */
603 bfd_elf_generic_reloc, /* special_function */
604 "R_METAG_TLS_TPOFF", /* name */
605 FALSE, /* partial_inplace */
607 0xffffffff, /* dst_mask */
608 FALSE), /* pcrel_offset */
610 HOWTO (R_METAG_TLS_DTPMOD, /* type */
612 2, /* size (0 = byte, 1 = short, 2 = long) */
614 FALSE, /* pc_relative */
616 complain_overflow_bitfield, /* complain_on_overflow */
617 bfd_elf_generic_reloc, /* special_function */
618 "R_METAG_TLS_DTPMOD", /* name */
619 FALSE, /* partial_inplace */
621 0xffffffff, /* dst_mask */
622 FALSE), /* pcrel_offset */
624 HOWTO (R_METAG_TLS_DTPOFF, /* type */
626 2, /* size (0 = byte, 1 = short, 2 = long) */
628 FALSE, /* pc_relative */
630 complain_overflow_bitfield, /* complain_on_overflow */
631 bfd_elf_generic_reloc, /* special_function */
632 "R_METAG_TLS_DTPOFF", /* name */
633 FALSE, /* partial_inplace */
635 0xffffffff, /* dst_mask */
636 FALSE), /* pcrel_offset */
638 /* Dummy reloc used by the linker internally. */
639 HOWTO (R_METAG_TLS_LE, /* type */
641 2, /* size (0 = byte, 1 = short, 2 = long) */
643 FALSE, /* pc_relative */
645 complain_overflow_bitfield, /* complain_on_overflow */
646 bfd_elf_generic_reloc, /* special_function */
647 "R_METAG_TLS_LE", /* name */
648 FALSE, /* partial_inplace */
650 0xffffffff, /* dst_mask */
651 FALSE), /* pcrel_offset */
653 HOWTO (R_METAG_TLS_LE_HI16, /* type */
655 2, /* size (0 = byte, 1 = short, 2 = long) */
657 FALSE, /* pc_relative */
659 complain_overflow_dont, /* complain_on_overflow */
660 bfd_elf_generic_reloc, /* special_function */
661 "R_METAG_TLS_LE_HI16", /* name */
662 FALSE, /* partial_inplace */
664 0x0007fff8, /* dst_mask */
665 FALSE), /* pcrel_offset */
667 HOWTO (R_METAG_TLS_LE_LO16, /* type */
669 2, /* size (0 = byte, 1 = short, 2 = long) */
671 FALSE, /* pc_relative */
673 complain_overflow_dont, /* complain_on_overflow */
674 bfd_elf_generic_reloc, /* special_function */
675 "R_METAG_TLS_LE_LO16", /* name */
676 FALSE, /* partial_inplace */
678 0x0007fff8, /* dst_mask */
679 FALSE), /* pcrel_offset */
683 #define BRANCH_BITS 19
685 /* The GOT is typically accessed using a [GS]ETD instruction. The size of the
686 immediate offset which can be used in such instructions therefore limits
687 the usable size of the GOT. If the base register for the [GS]ETD (A1LbP)
688 is pointing to the base of the GOT then the size is limited to the maximum
689 11 bits unsigned dword offset, or 2^13 = 0x2000 bytes. However the offset
690 in a [GS]ETD instruction is signed, so by setting the base address register
691 to an offset of that 0x2000 byte maximum unsigned offset from the base of
692 the GOT we can use negative offsets in addition to positive. This
693 effectively doubles the usable GOT size to 0x4000 bytes. */
694 #define GOT_REG_OFFSET 0x2000
696 struct metag_reloc_map
698 bfd_reloc_code_real_type bfd_reloc_val;
699 unsigned int metag_reloc_val;
702 static const struct metag_reloc_map metag_reloc_map [] =
704 { BFD_RELOC_NONE, R_METAG_NONE },
705 { BFD_RELOC_32, R_METAG_ADDR32 },
706 { BFD_RELOC_METAG_HIADDR16, R_METAG_HIADDR16 },
707 { BFD_RELOC_METAG_LOADDR16, R_METAG_LOADDR16 },
708 { BFD_RELOC_METAG_RELBRANCH, R_METAG_RELBRANCH },
709 { BFD_RELOC_METAG_GETSETOFF, R_METAG_GETSETOFF },
710 { BFD_RELOC_VTABLE_INHERIT, R_METAG_GNU_VTINHERIT },
711 { BFD_RELOC_VTABLE_ENTRY, R_METAG_GNU_VTENTRY },
712 { BFD_RELOC_METAG_REL8, R_METAG_REL8 },
713 { BFD_RELOC_METAG_REL16, R_METAG_REL16 },
714 { BFD_RELOC_METAG_HI16_GOTOFF, R_METAG_HI16_GOTOFF },
715 { BFD_RELOC_METAG_LO16_GOTOFF, R_METAG_LO16_GOTOFF },
716 { BFD_RELOC_METAG_GETSET_GOTOFF, R_METAG_GETSET_GOTOFF },
717 { BFD_RELOC_METAG_GETSET_GOT, R_METAG_GETSET_GOT },
718 { BFD_RELOC_METAG_HI16_GOTPC, R_METAG_HI16_GOTPC },
719 { BFD_RELOC_METAG_LO16_GOTPC, R_METAG_LO16_GOTPC },
720 { BFD_RELOC_METAG_HI16_PLT, R_METAG_HI16_PLT },
721 { BFD_RELOC_METAG_LO16_PLT, R_METAG_LO16_PLT },
722 { BFD_RELOC_METAG_RELBRANCH_PLT, R_METAG_RELBRANCH_PLT },
723 { BFD_RELOC_METAG_GOTOFF, R_METAG_GOTOFF },
724 { BFD_RELOC_METAG_PLT, R_METAG_PLT },
725 { BFD_RELOC_METAG_COPY, R_METAG_COPY },
726 { BFD_RELOC_METAG_JMP_SLOT, R_METAG_JMP_SLOT },
727 { BFD_RELOC_METAG_RELATIVE, R_METAG_RELATIVE },
728 { BFD_RELOC_METAG_GLOB_DAT, R_METAG_GLOB_DAT },
729 { BFD_RELOC_METAG_TLS_GD, R_METAG_TLS_GD },
730 { BFD_RELOC_METAG_TLS_LDM, R_METAG_TLS_LDM },
731 { BFD_RELOC_METAG_TLS_LDO_HI16, R_METAG_TLS_LDO_HI16 },
732 { BFD_RELOC_METAG_TLS_LDO_LO16, R_METAG_TLS_LDO_LO16 },
733 { BFD_RELOC_METAG_TLS_LDO, R_METAG_TLS_LDO },
734 { BFD_RELOC_METAG_TLS_IE, R_METAG_TLS_IE },
735 { BFD_RELOC_METAG_TLS_IENONPIC, R_METAG_TLS_IENONPIC },
736 { BFD_RELOC_METAG_TLS_IENONPIC_HI16, R_METAG_TLS_IENONPIC_HI16 },
737 { BFD_RELOC_METAG_TLS_IENONPIC_LO16, R_METAG_TLS_IENONPIC_LO16 },
738 { BFD_RELOC_METAG_TLS_TPOFF, R_METAG_TLS_TPOFF },
739 { BFD_RELOC_METAG_TLS_DTPMOD, R_METAG_TLS_DTPMOD },
740 { BFD_RELOC_METAG_TLS_DTPOFF, R_METAG_TLS_DTPOFF },
741 { BFD_RELOC_METAG_TLS_LE, R_METAG_TLS_LE },
742 { BFD_RELOC_METAG_TLS_LE_HI16, R_METAG_TLS_LE_HI16 },
743 { BFD_RELOC_METAG_TLS_LE_LO16, R_METAG_TLS_LE_LO16 },
746 enum elf_metag_stub_type
748 metag_stub_long_branch,
749 metag_stub_long_branch_shared,
753 struct elf_metag_stub_hash_entry
755 /* Base hash table entry structure. */
756 struct bfd_hash_entry bh_root;
758 /* The stub section. */
761 /* Offset within stub_sec of the beginning of this stub. */
764 /* Given the symbol's value and its section we can determine its final
765 value when building the stubs (so the stub knows where to jump. */
766 bfd_vma target_value;
767 asection *target_section;
769 enum elf_metag_stub_type stub_type;
771 /* The symbol table entry, if any, that this was derived from. */
772 struct elf_metag_link_hash_entry *hh;
774 /* And the reloc addend that this was derived from. */
777 /* Where this stub is being called from, or, in the case of combined
778 stub sections, the first input section in the group. */
782 struct elf_metag_link_hash_entry
784 struct elf_link_hash_entry eh;
786 /* A pointer to the most recently used stub hash entry against this
788 struct elf_metag_stub_hash_entry *hsh_cache;
790 /* Used to count relocations for delayed sizing of relocation
792 struct elf_metag_dyn_reloc_entry {
794 /* Next relocation in the chain. */
795 struct elf_metag_dyn_reloc_entry *hdh_next;
797 /* The input section of the reloc. */
800 /* Number of relocs copied in this section. */
803 /* Number of relative relocs copied for the input section. */
804 bfd_size_type relative_count;
809 GOT_UNKNOWN = 0, GOT_NORMAL = 1, GOT_TLS_IE = 2, GOT_TLS_LDM = 4, GOT_TLS_GD = 8
813 struct elf_metag_link_hash_table
815 /* The main hash table. */
816 struct elf_link_hash_table etab;
818 /* The stub hash table. */
819 struct bfd_hash_table bstab;
821 /* Linker stub bfd. */
824 /* Linker call-backs. */
825 asection * (*add_stub_section) (const char *, asection *);
826 void (*layout_sections_again) (void);
828 /* Array to keep track of which stub sections have been created, and
829 information on stub grouping. */
832 /* This is the section to which stubs in the group will be
835 /* The stub section. */
839 /* Assorted information used by elf_metag_size_stubs. */
840 unsigned int bfd_count;
841 unsigned int top_index;
842 asection **input_list;
843 Elf_Internal_Sym **all_local_syms;
845 /* Short-cuts to get to dynamic linker sections. */
854 /* Small local sym cache. */
855 struct sym_cache sym_cache;
857 /* Data for LDM relocations. */
860 bfd_signed_vma refcount;
865 /* Return the base vma address which should be subtracted from the
866 real address when resolving a dtpoff relocation. This is PT_TLS
869 dtpoff_base (struct bfd_link_info *info)
871 /* If tls_sec is NULL, we should have signalled an error already. */
872 if (elf_hash_table (info)->tls_sec == NULL)
874 return elf_hash_table (info)->tls_sec->vma;
877 /* Return the relocation value for R_METAG_TLS_IE */
879 tpoff (struct bfd_link_info *info, bfd_vma address)
881 /* If tls_sec is NULL, we should have signalled an error already. */
882 if (elf_hash_table (info)->tls_sec == NULL)
884 /* METAG TLS ABI is variant I and static TLS blocks start just after
885 tcbhead structure which has 2 pointer fields. */
886 return (address - elf_hash_table (info)->tls_sec->vma
887 + align_power ((bfd_vma) 8,
888 elf_hash_table (info)->tls_sec->alignment_power));
892 metag_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
894 Elf_Internal_Rela *dst)
898 r_type = ELF32_R_TYPE (dst->r_info);
899 if (r_type >= (unsigned int) R_METAG_MAX)
901 _bfd_error_handler (_("%B: invalid METAG reloc number: %d"), abfd, r_type);
904 cache_ptr->howto = & elf_metag_howto_table [r_type];
907 static reloc_howto_type *
908 metag_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
909 bfd_reloc_code_real_type code)
913 for (i = 0; i < sizeof (metag_reloc_map) / sizeof (metag_reloc_map[0]); i++)
914 if (metag_reloc_map [i].bfd_reloc_val == code)
915 return & elf_metag_howto_table [metag_reloc_map[i].metag_reloc_val];
920 static reloc_howto_type *
921 metag_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
926 for (i = 0; i < sizeof (elf_metag_howto_table) / sizeof (elf_metag_howto_table[0]); i++)
927 if (elf_metag_howto_table[i].name != NULL
928 && strcasecmp (elf_metag_howto_table[i].name, r_name) == 0)
929 return &elf_metag_howto_table[i];
934 /* Various hash macros and functions. */
935 #define metag_link_hash_table(p) \
936 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
937 == METAG_ELF_DATA ? ((struct elf_metag_link_hash_table *) ((p)->hash)) : NULL)
939 #define metag_elf_hash_entry(ent) \
940 ((struct elf_metag_link_hash_entry *)(ent))
942 #define metag_stub_hash_entry(ent) \
943 ((struct elf_metag_stub_hash_entry *)(ent))
945 #define metag_stub_hash_lookup(table, string, create, copy) \
946 ((struct elf_metag_stub_hash_entry *) \
947 bfd_hash_lookup ((table), (string), (create), (copy)))
949 #define metag_elf_local_got_tls_type(abfd) \
950 ((char *)(elf_local_got_offsets (abfd) + (elf_tdata (abfd)->symtab_hdr.sh_info)))
952 /* Assorted hash table functions. */
954 /* Initialize an entry in the stub hash table. */
956 static struct bfd_hash_entry *
957 stub_hash_newfunc (struct bfd_hash_entry *entry,
958 struct bfd_hash_table *table,
961 /* Allocate the structure if it has not already been allocated by a
965 entry = bfd_hash_allocate (table,
966 sizeof (struct elf_metag_stub_hash_entry));
971 /* Call the allocation method of the superclass. */
972 entry = bfd_hash_newfunc (entry, table, string);
975 struct elf_metag_stub_hash_entry *hsh;
977 /* Initialize the local fields. */
978 hsh = (struct elf_metag_stub_hash_entry *) entry;
979 hsh->stub_sec = NULL;
980 hsh->stub_offset = 0;
981 hsh->target_value = 0;
982 hsh->target_section = NULL;
983 hsh->stub_type = metag_stub_long_branch;
991 /* Initialize an entry in the link hash table. */
993 static struct bfd_hash_entry *
994 metag_link_hash_newfunc (struct bfd_hash_entry *entry,
995 struct bfd_hash_table *table,
998 /* Allocate the structure if it has not already been allocated by a
1002 entry = bfd_hash_allocate (table,
1003 sizeof (struct elf_metag_link_hash_entry));
1008 /* Call the allocation method of the superclass. */
1009 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1012 struct elf_metag_link_hash_entry *hh;
1014 /* Initialize the local fields. */
1015 hh = (struct elf_metag_link_hash_entry *) entry;
1016 hh->hsh_cache = NULL;
1017 hh->dyn_relocs = NULL;
1018 hh->tls_type = GOT_UNKNOWN;
1024 /* Free the derived linker hash table. */
1027 elf_metag_link_hash_table_free (bfd *obfd)
1029 struct elf_metag_link_hash_table *htab
1030 = (struct elf_metag_link_hash_table *) obfd->link.hash;
1032 bfd_hash_table_free (&htab->bstab);
1033 _bfd_elf_link_hash_table_free (obfd);
1036 /* Create the derived linker hash table. The Meta ELF port uses the derived
1037 hash table to keep information specific to the Meta ELF linker (without
1038 using static variables). */
1040 static struct bfd_link_hash_table *
1041 elf_metag_link_hash_table_create (bfd *abfd)
1043 struct elf_metag_link_hash_table *htab;
1044 bfd_size_type amt = sizeof (*htab);
1046 htab = bfd_zmalloc (amt);
1050 if (!_bfd_elf_link_hash_table_init (&htab->etab, abfd,
1051 metag_link_hash_newfunc,
1052 sizeof (struct elf_metag_link_hash_entry),
1059 /* Init the stub hash table too. */
1060 if (!bfd_hash_table_init (&htab->bstab, stub_hash_newfunc,
1061 sizeof (struct elf_metag_stub_hash_entry)))
1063 _bfd_elf_link_hash_table_free (abfd);
1066 htab->etab.root.hash_table_free = elf_metag_link_hash_table_free;
1068 return &htab->etab.root;
1071 /* Section name for stubs is the associated section name plus this
1073 #define STUB_SUFFIX ".stub"
1075 /* Build a name for an entry in the stub hash table. */
1078 metag_stub_name (const asection *input_section,
1079 const asection *sym_sec,
1080 const struct elf_metag_link_hash_entry *hh,
1081 const Elf_Internal_Rela *rel)
1088 len = 8 + 1 + strlen (hh->eh.root.root.string) + 1 + 8 + 1;
1089 stub_name = bfd_malloc (len);
1090 if (stub_name != NULL)
1092 sprintf (stub_name, "%08x_%s+%x",
1093 input_section->id & 0xffffffff,
1094 hh->eh.root.root.string,
1095 (int) rel->r_addend & 0xffffffff);
1100 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
1101 stub_name = bfd_malloc (len);
1102 if (stub_name != NULL)
1104 sprintf (stub_name, "%08x_%x:%x+%x",
1105 input_section->id & 0xffffffff,
1106 sym_sec->id & 0xffffffff,
1107 (int) ELF32_R_SYM (rel->r_info) & 0xffffffff,
1108 (int) rel->r_addend & 0xffffffff);
1114 /* Look up an entry in the stub hash. Stub entries are cached because
1115 creating the stub name takes a bit of time. */
1117 static struct elf_metag_stub_hash_entry *
1118 metag_get_stub_entry (const asection *input_section,
1119 const asection *sym_sec,
1120 struct elf_metag_link_hash_entry *hh,
1121 const Elf_Internal_Rela *rel,
1122 struct elf_metag_link_hash_table *htab)
1124 struct elf_metag_stub_hash_entry *hsh;
1125 const asection *id_sec;
1127 /* If this input section is part of a group of sections sharing one
1128 stub section, then use the id of the first section in the group.
1129 Stub names need to include a section id, as there may well be
1130 more than one stub used to reach say, printf, and we need to
1131 distinguish between them. */
1132 id_sec = htab->stub_group[input_section->id].link_sec;
1134 if (hh != NULL && hh->hsh_cache != NULL
1135 && hh->hsh_cache->hh == hh
1136 && hh->hsh_cache->id_sec == id_sec)
1138 hsh = hh->hsh_cache;
1144 stub_name = metag_stub_name (id_sec, sym_sec, hh, rel);
1145 if (stub_name == NULL)
1148 hsh = metag_stub_hash_lookup (&htab->bstab,
1149 stub_name, FALSE, FALSE);
1152 hh->hsh_cache = hsh;
1160 /* Add a new stub entry to the stub hash. Not all fields of the new
1161 stub entry are initialised. */
1163 static struct elf_metag_stub_hash_entry *
1164 metag_add_stub (const char *stub_name,
1166 struct elf_metag_link_hash_table *htab)
1170 struct elf_metag_stub_hash_entry *hsh;
1172 link_sec = htab->stub_group[section->id].link_sec;
1173 stub_sec = htab->stub_group[section->id].stub_sec;
1174 if (stub_sec == NULL)
1176 stub_sec = htab->stub_group[link_sec->id].stub_sec;
1177 if (stub_sec == NULL)
1183 namelen = strlen (link_sec->name);
1184 len = namelen + sizeof (STUB_SUFFIX);
1185 s_name = bfd_alloc (htab->stub_bfd, len);
1189 memcpy (s_name, link_sec->name, namelen);
1190 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
1192 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
1193 if (stub_sec == NULL)
1195 htab->stub_group[link_sec->id].stub_sec = stub_sec;
1197 htab->stub_group[section->id].stub_sec = stub_sec;
1200 /* Enter this entry into the linker stub hash table. */
1201 hsh = metag_stub_hash_lookup (&htab->bstab, stub_name,
1205 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
1211 hsh->stub_sec = stub_sec;
1212 hsh->stub_offset = 0;
1213 hsh->id_sec = link_sec;
1217 /* Check a signed integer value can be represented in the given number
1221 within_signed_range (int value, unsigned int bits)
1223 int min_val = -(1 << (bits - 1));
1224 int max_val = (1 << (bits - 1)) - 1;
1225 return (value <= max_val) && (value >= min_val);
1228 /* Perform a relocation as part of a final link. */
1230 static bfd_reloc_status_type
1231 metag_final_link_relocate (reloc_howto_type *howto,
1233 asection *input_section,
1235 Elf_Internal_Rela *rel,
1237 struct elf_metag_link_hash_entry *hh,
1238 struct elf_metag_link_hash_table *htab,
1241 bfd_reloc_status_type r = bfd_reloc_ok;
1242 bfd_byte *hit_data = contents + rel->r_offset;
1243 int opcode, op_shift, op_extended, l1, l2;
1244 bfd_signed_vma srel, addend = rel->r_addend;
1245 struct elf_metag_stub_hash_entry *hsh = NULL;
1248 /* Find out where we are and where we're going. */
1249 location = (rel->r_offset +
1250 input_section->output_offset +
1251 input_section->output_section->vma);
1253 switch (howto->type)
1255 case R_METAG_RELBRANCH:
1256 case R_METAG_RELBRANCH_PLT:
1257 /* Make it a pc relative offset. */
1258 relocation -= location;
1260 case R_METAG_TLS_GD:
1261 case R_METAG_TLS_IE:
1262 relocation -= elf_gp (input_section->output_section->owner);
1268 switch (howto->type)
1270 case R_METAG_RELBRANCH_PLT:
1271 case R_METAG_RELBRANCH:
1272 opcode = bfd_get_32 (input_bfd, hit_data);
1274 srel = (bfd_signed_vma) relocation;
1277 /* If the branch is out of reach, then redirect the
1278 call to the local stub for this function. */
1279 if (srel > ((1 << (BRANCH_BITS + 1)) - 1) ||
1280 (srel < - (1 << (BRANCH_BITS + 1))))
1282 if (sym_sec == NULL)
1285 hsh = metag_get_stub_entry (input_section, sym_sec,
1288 return bfd_reloc_undefined;
1290 /* Munge up the value and addend so that we call the stub
1291 rather than the procedure directly. */
1292 srel = (hsh->stub_offset
1293 + hsh->stub_sec->output_offset
1294 + hsh->stub_sec->output_section->vma);
1300 if (!within_signed_range (srel, BRANCH_BITS))
1302 if (hh && hh->eh.root.type == bfd_link_hash_undefweak)
1305 return bfd_reloc_overflow;
1308 opcode &= ~(0x7ffff << 5);
1309 opcode |= ((srel & 0x7ffff) << 5);
1311 bfd_put_32 (input_bfd, opcode, hit_data);
1313 case R_METAG_GETSETOFF:
1314 case R_METAG_GETSET_GOT:
1315 case R_METAG_GETSET_GOTOFF:
1316 opcode = bfd_get_32 (input_bfd, hit_data);
1318 srel = (bfd_signed_vma) relocation;
1321 /* Is this a standard or extended GET/SET? */
1322 if ((opcode & 0xf0000000) == 0xa0000000)
1324 /* Extended GET/SET. */
1331 /* Standard GET/SET. */
1332 l1 = opcode & 0x01000000;
1333 l2 = opcode & 0x04000000;
1337 /* Calculate the width of the GET/SET and how much we need to
1338 shift the result by. */
1350 /* GET/SET offsets are scaled by the width of the transfer. */
1351 srel = srel >> op_shift;
1353 /* Extended GET/SET has signed 12 bits of offset, standard has
1357 if (!within_signed_range (srel, 12))
1359 if (hh && hh->eh.root.type == bfd_link_hash_undefweak)
1362 return bfd_reloc_overflow;
1364 opcode &= ~(0xfff << 7);
1365 opcode |= ((srel & 0xfff) << 7);
1369 if (!within_signed_range (srel, 5))
1371 if (hh && hh->eh.root.type == bfd_link_hash_undefweak)
1374 return bfd_reloc_overflow;
1376 opcode &= ~(0x3f << 8);
1377 opcode |= ((srel & 0x3f) << 8);
1380 bfd_put_32 (input_bfd, opcode, hit_data);
1382 case R_METAG_TLS_GD:
1383 case R_METAG_TLS_LDM:
1384 opcode = bfd_get_32 (input_bfd, hit_data);
1386 if ((bfd_signed_vma)relocation < 0)
1388 /* sign extend immediate */
1389 if ((opcode & 0xf2000001) == 0x02000000)
1391 /* ADD De.e,Dx.r,#I16 */
1395 return bfd_reloc_overflow;
1398 bfd_put_32 (input_bfd, opcode, hit_data);
1400 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
1401 contents, rel->r_offset,
1402 relocation, rel->r_addend);
1405 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
1406 contents, rel->r_offset,
1407 relocation, rel->r_addend);
1413 /* This is defined because R_METAG_NONE != 0...
1414 See RELOC_AGAINST_DISCARDED_SECTION for details. */
1415 #define METAG_RELOC_AGAINST_DISCARDED_SECTION(info, input_bfd, input_section, \
1416 rel, relend, howto, contents) \
1418 _bfd_clear_contents (howto, input_bfd, input_section, \
1419 contents + rel->r_offset); \
1421 if (bfd_link_relocatable (info) \
1422 && (input_section->flags & SEC_DEBUGGING)) \
1424 /* Only remove relocations in debug sections since other \
1425 sections may require relocations. */ \
1426 Elf_Internal_Shdr *rel_hdr; \
1428 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); \
1430 /* Avoid empty output section. */ \
1431 if (rel_hdr->sh_size > rel_hdr->sh_entsize) \
1433 rel_hdr->sh_size -= rel_hdr->sh_entsize; \
1434 rel_hdr = _bfd_elf_single_rel_hdr (input_section); \
1435 rel_hdr->sh_size -= rel_hdr->sh_entsize; \
1437 memmove (rel, rel + 1, (relend - rel) * sizeof (*rel)); \
1439 input_section->reloc_count--; \
1446 rel->r_info = R_METAG_NONE; \
1447 rel->r_addend = 0; \
1451 /* Relocate a META ELF section.
1453 The RELOCATE_SECTION function is called by the new ELF backend linker
1454 to handle the relocations for a section.
1456 The relocs are always passed as Rela structures; if the section
1457 actually uses Rel structures, the r_addend field will always be
1460 This function is responsible for adjusting the section contents as
1461 necessary, and (if using Rela relocs and generating a relocatable
1462 output file) adjusting the reloc addend as necessary.
1464 This function does not have to worry about setting the reloc
1465 address or the reloc symbol index.
1467 LOCAL_SYMS is a pointer to the swapped in local symbols.
1469 LOCAL_SECTIONS is an array giving the section in the input file
1470 corresponding to the st_shndx field of each local symbol.
1472 The global hash table entry for the global symbols can be found
1473 via elf_sym_hashes (input_bfd).
1475 When generating relocatable output, this function must handle
1476 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
1477 going to be the section symbol corresponding to the output
1478 section, which means that the addend must be adjusted
1482 elf_metag_relocate_section (bfd *output_bfd,
1483 struct bfd_link_info *info,
1485 asection *input_section,
1487 Elf_Internal_Rela *relocs,
1488 Elf_Internal_Sym *local_syms,
1489 asection **local_sections)
1491 bfd_vma *local_got_offsets;
1492 Elf_Internal_Shdr *symtab_hdr;
1493 struct elf_link_hash_entry **eh_syms;
1494 struct elf_metag_link_hash_table *htab;
1495 Elf_Internal_Rela *rel;
1496 Elf_Internal_Rela *relend;
1499 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1500 eh_syms = elf_sym_hashes (input_bfd);
1501 relend = relocs + input_section->reloc_count;
1503 htab = metag_link_hash_table (info);
1504 local_got_offsets = elf_local_got_offsets (input_bfd);
1508 for (rel = relocs; rel < relend; rel ++)
1510 reloc_howto_type *howto;
1511 unsigned long r_symndx;
1512 Elf_Internal_Sym *sym;
1514 struct elf_metag_link_hash_entry *hh;
1516 bfd_reloc_status_type r;
1520 r_type = ELF32_R_TYPE (rel->r_info);
1522 if (r_type == R_METAG_GNU_VTINHERIT
1523 || r_type == R_METAG_GNU_VTENTRY
1524 || r_type == R_METAG_NONE)
1527 r_symndx = ELF32_R_SYM (rel->r_info);
1529 howto = elf_metag_howto_table + ELF32_R_TYPE (rel->r_info);
1534 if (r_symndx < symtab_hdr->sh_info)
1536 sym = local_syms + r_symndx;
1537 sec = local_sections [r_symndx];
1538 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1540 name = bfd_elf_string_from_elf_section
1541 (input_bfd, symtab_hdr->sh_link, sym->st_name);
1542 name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
1546 struct elf_link_hash_entry *eh;
1547 bfd_boolean unresolved_reloc, warned, ignored;
1549 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1550 r_symndx, symtab_hdr, eh_syms,
1551 eh, sec, relocation,
1552 unresolved_reloc, warned, ignored);
1554 name = eh->root.root.string;
1555 hh = (struct elf_metag_link_hash_entry *) eh;
1558 if (sec != NULL && discarded_section (sec))
1559 METAG_RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
1560 rel, relend, howto, contents);
1562 if (bfd_link_relocatable (info))
1567 case R_METAG_ADDR32:
1568 case R_METAG_RELBRANCH:
1569 if ((input_section->flags & SEC_ALLOC) == 0)
1572 if ((bfd_link_pic (info)
1573 && r_symndx != STN_UNDEF
1574 && (input_section->flags & SEC_ALLOC) != 0
1575 && (r_type != R_METAG_RELBRANCH
1576 || !SYMBOL_CALLS_LOCAL (info, &hh->eh)))
1577 || (!bfd_link_pic (info)
1579 && hh->eh.dynindx != -1
1580 && !hh->eh.non_got_ref
1581 && ((hh->eh.def_dynamic
1582 && !hh->eh.def_regular)
1583 || hh->eh.root.type == bfd_link_hash_undefweak
1584 || hh->eh.root.type == bfd_link_hash_undefined)))
1586 Elf_Internal_Rela outrel;
1587 bfd_boolean skip, relocate;
1590 /* When generating a shared object, these relocations
1591 are copied into the output file to be resolved at run
1594 sreloc = elf_section_data (input_section)->sreloc;
1595 BFD_ASSERT (sreloc != NULL);
1600 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
1604 if (outrel.r_offset == (bfd_vma) -1)
1606 else if (outrel.r_offset == (bfd_vma) -2)
1607 skip = TRUE, relocate = TRUE;
1608 outrel.r_offset += (input_section->output_section->vma
1609 + input_section->output_offset);
1613 memset (&outrel, 0, sizeof outrel);
1614 outrel.r_info = ELF32_R_INFO (0, R_METAG_NONE);
1616 else if (r_type == R_METAG_RELBRANCH)
1618 BFD_ASSERT (hh != NULL && hh->eh.dynindx != -1);
1619 outrel.r_info = ELF32_R_INFO (hh->eh.dynindx, r_type);
1620 outrel.r_addend = rel->r_addend;
1624 /* h->dynindx may be -1 if this symbol was marked to
1627 || ((info->symbolic || hh->eh.dynindx == -1)
1628 && hh->eh.def_regular))
1631 outrel.r_info = ELF32_R_INFO (0, R_METAG_RELATIVE);
1632 outrel.r_addend = relocation + rel->r_addend;
1636 BFD_ASSERT (hh->eh.dynindx != -1);
1637 outrel.r_info = ELF32_R_INFO (hh->eh.dynindx, r_type);
1638 outrel.r_addend = rel->r_addend;
1642 loc = sreloc->contents;
1643 loc += sreloc->reloc_count * sizeof(Elf32_External_Rela);
1644 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
1645 ++sreloc->reloc_count;
1647 /* If this reloc is against an external symbol, we do
1648 not want to fiddle with the addend. Otherwise, we
1649 need to include the symbol value so that it becomes
1650 an addend for the dynamic reloc. */
1656 case R_METAG_RELBRANCH_PLT:
1657 /* Relocation is to the entry for this symbol in the
1658 procedure linkage table. */
1663 if (hh->eh.forced_local)
1666 if (hh->eh.plt.offset == (bfd_vma) -1 ||
1669 /* We didn't make a PLT entry for this symbol. This
1670 happens when statically linking PIC code, or when
1671 using -Bsymbolic. */
1675 relocation = (htab->splt->output_section->vma
1676 + htab->splt->output_offset
1677 + hh->eh.plt.offset);
1679 case R_METAG_HI16_GOTPC:
1680 case R_METAG_LO16_GOTPC:
1681 BFD_ASSERT (htab->sgot != NULL);
1683 relocation = (htab->sgot->output_section->vma +
1684 htab->sgot->output_offset);
1685 relocation += GOT_REG_OFFSET;
1686 relocation -= (input_section->output_section->vma
1687 + input_section->output_offset
1690 case R_METAG_HI16_GOTOFF:
1691 case R_METAG_LO16_GOTOFF:
1692 case R_METAG_GETSET_GOTOFF:
1693 BFD_ASSERT (htab->sgot != NULL);
1695 relocation -= (htab->sgot->output_section->vma +
1696 htab->sgot->output_offset);
1697 relocation -= GOT_REG_OFFSET;
1699 case R_METAG_GETSET_GOT:
1702 bfd_boolean do_got = 0;
1704 /* Relocation is to the entry for this symbol in the
1705 global offset table. */
1710 off = hh->eh.got.offset;
1711 dyn = htab->etab.dynamic_sections_created;
1712 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
1713 bfd_link_pic (info),
1716 /* If we aren't going to call finish_dynamic_symbol,
1717 then we need to handle initialisation of the .got
1718 entry and create needed relocs here. Since the
1719 offset must always be a multiple of 4, we use the
1720 least significant bit to record whether we have
1721 initialised it already. */
1726 hh->eh.got.offset |= 1;
1733 /* Local symbol case. */
1734 if (local_got_offsets == NULL)
1737 off = local_got_offsets[r_symndx];
1739 /* The offset must always be a multiple of 4. We use
1740 the least significant bit to record whether we have
1741 already generated the necessary reloc. */
1746 local_got_offsets[r_symndx] |= 1;
1753 if (bfd_link_pic (info))
1755 /* Output a dynamic relocation for this GOT entry.
1756 In this case it is relative to the base of the
1757 object because the symbol index is zero. */
1758 Elf_Internal_Rela outrel;
1760 asection *s = htab->srelgot;
1762 outrel.r_offset = (off
1763 + htab->sgot->output_offset
1764 + htab->sgot->output_section->vma);
1765 outrel.r_info = ELF32_R_INFO (0, R_METAG_RELATIVE);
1766 outrel.r_addend = relocation;
1768 loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
1769 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1772 bfd_put_32 (output_bfd, relocation,
1773 htab->sgot->contents + off);
1776 if (off >= (bfd_vma) -2)
1779 relocation = off - GOT_REG_OFFSET;
1782 case R_METAG_TLS_GD:
1783 case R_METAG_TLS_IE:
1785 /* XXXMJF There is room here for optimisations. For example
1786 converting from GD->IE, etc. */
1791 if (htab->sgot == NULL)
1798 dyn = htab->etab.dynamic_sections_created;
1800 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
1801 bfd_link_pic (info),
1803 && (!bfd_link_pic (info)
1804 || !SYMBOL_REFERENCES_LOCAL (info, &hh->eh)))
1806 indx = hh->eh.dynindx;
1808 off = hh->eh.got.offset;
1809 tls_type = hh->tls_type;
1813 /* Local symbol case. */
1814 if (local_got_offsets == NULL)
1817 off = local_got_offsets[r_symndx];
1818 tls_type = metag_elf_local_got_tls_type (input_bfd) [r_symndx];
1821 if (tls_type == GOT_UNKNOWN)
1828 bfd_boolean need_relocs = FALSE;
1829 Elf_Internal_Rela outrel;
1830 bfd_byte *loc = NULL;
1833 /* The GOT entries have not been initialized yet. Do it
1834 now, and emit any relocations. If both an IE GOT and a
1835 GD GOT are necessary, we emit the GD first. */
1837 if ((bfd_link_pic (info) || indx != 0)
1839 || ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT
1840 || hh->eh.root.type != bfd_link_hash_undefweak))
1843 loc = htab->srelgot->contents;
1844 /* FIXME (CAO): Should this be reloc_count++ ? */
1845 loc += htab->srelgot->reloc_count * sizeof (Elf32_External_Rela);
1848 if (tls_type & GOT_TLS_GD)
1852 outrel.r_offset = (cur_off
1853 + htab->sgot->output_section->vma
1854 + htab->sgot->output_offset);
1855 outrel.r_info = ELF32_R_INFO (indx, R_METAG_TLS_DTPMOD);
1856 outrel.r_addend = 0;
1857 bfd_put_32 (output_bfd, 0, htab->sgot->contents + cur_off);
1859 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1860 htab->srelgot->reloc_count++;
1861 loc += sizeof (Elf32_External_Rela);
1864 bfd_put_32 (output_bfd, 0,
1865 htab->sgot->contents + cur_off + 4);
1868 bfd_put_32 (output_bfd, 0,
1869 htab->sgot->contents + cur_off + 4);
1870 outrel.r_info = ELF32_R_INFO (indx,
1871 R_METAG_TLS_DTPOFF);
1872 outrel.r_offset += 4;
1873 bfd_elf32_swap_reloca_out (output_bfd,
1875 htab->srelgot->reloc_count++;
1876 loc += sizeof (Elf32_External_Rela);
1881 /* We don't support changing the TLS model. */
1888 if (tls_type & GOT_TLS_IE)
1892 outrel.r_offset = (cur_off
1893 + htab->sgot->output_section->vma
1894 + htab->sgot->output_offset);
1895 outrel.r_info = ELF32_R_INFO (indx, R_METAG_TLS_TPOFF);
1898 outrel.r_addend = relocation - dtpoff_base (info);
1900 outrel.r_addend = 0;
1902 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1903 htab->srelgot->reloc_count++;
1904 loc += sizeof (Elf32_External_Rela);
1907 bfd_put_32 (output_bfd, tpoff (info, relocation),
1908 htab->sgot->contents + cur_off);
1914 hh->eh.got.offset |= 1;
1916 local_got_offsets[r_symndx] |= 1;
1919 /* Add the base of the GOT to the relocation value. */
1920 relocation = off - GOT_REG_OFFSET;
1925 case R_METAG_TLS_IENONPIC_HI16:
1926 case R_METAG_TLS_IENONPIC_LO16:
1927 case R_METAG_TLS_LE_HI16:
1928 case R_METAG_TLS_LE_LO16:
1929 if (bfd_link_pic (info))
1931 (*_bfd_error_handler)
1932 (_("%B(%A+0x%lx): R_METAG_TLS_LE/IENONPIC relocation not permitted in shared object"),
1933 input_bfd, input_section,
1934 (long) rel->r_offset, howto->name);
1938 relocation = tpoff (info, relocation);
1940 case R_METAG_TLS_LDO_HI16:
1941 case R_METAG_TLS_LDO_LO16:
1942 if (! bfd_link_pic (info))
1943 relocation = tpoff (info, relocation);
1945 relocation -= dtpoff_base (info);
1947 case R_METAG_TLS_LDM:
1951 if (htab->sgot == NULL)
1953 off = htab->tls_ldm_got.offset;
1958 Elf_Internal_Rela outrel;
1961 outrel.r_offset = (off
1962 + htab->sgot->output_section->vma
1963 + htab->sgot->output_offset);
1965 outrel.r_addend = 0;
1966 outrel.r_info = ELF32_R_INFO (0, R_METAG_TLS_DTPMOD);
1967 loc = htab->srelgot->contents;
1968 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1969 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1970 htab->tls_ldm_got.offset |= 1;
1973 relocation = off - GOT_REG_OFFSET;
1980 r = metag_final_link_relocate (howto, input_bfd, input_section,
1981 contents, rel, relocation, hh, htab,
1984 if (r != bfd_reloc_ok)
1986 const char * msg = (const char *) NULL;
1990 case bfd_reloc_overflow:
1991 (*info->callbacks->reloc_overflow)
1992 (info, (hh ? &hh->eh.root : NULL), name, howto->name,
1993 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
1996 case bfd_reloc_undefined:
1997 (*info->callbacks->undefined_symbol)
1998 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
2001 case bfd_reloc_outofrange:
2002 msg = _("internal error: out of range error");
2005 case bfd_reloc_notsupported:
2006 msg = _("internal error: unsupported relocation error");
2009 case bfd_reloc_dangerous:
2010 msg = _("internal error: dangerous relocation");
2014 msg = _("internal error: unknown error");
2019 (*info->callbacks->warning) (info, msg, name, input_bfd,
2020 input_section, rel->r_offset);
2027 /* Create the .plt and .got sections, and set up our hash table
2028 short-cuts to various dynamic sections. */
2031 elf_metag_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2033 struct elf_metag_link_hash_table *htab;
2034 struct elf_link_hash_entry *eh;
2035 struct bfd_link_hash_entry *bh;
2036 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2038 /* Don't try to create the .plt and .got twice. */
2039 htab = metag_link_hash_table (info);
2040 if (htab->splt != NULL)
2043 /* Call the generic code to do most of the work. */
2044 if (! _bfd_elf_create_dynamic_sections (abfd, info))
2047 htab->sgot = bfd_get_linker_section (abfd, ".got");
2051 htab->sgotplt = bfd_make_section_with_flags (abfd, ".got.plt",
2052 (SEC_ALLOC | SEC_LOAD |
2055 SEC_LINKER_CREATED));
2056 if (htab->sgotplt == NULL
2057 || !bfd_set_section_alignment (abfd, htab->sgotplt, 2))
2060 /* Define the symbol __GLOBAL_OFFSET_TABLE__ at the start of the .got
2061 section. We don't do this in the linker script because we don't want
2062 to define the symbol if we are not creating a global offset table. */
2064 if (!(_bfd_generic_link_add_one_symbol
2065 (info, abfd, "__GLOBAL_OFFSET_TABLE__", BSF_GLOBAL, htab->sgot,
2066 (bfd_vma) 0, NULL, FALSE, bed->collect, &bh)))
2068 eh = (struct elf_link_hash_entry *) bh;
2069 eh->def_regular = 1;
2070 eh->type = STT_OBJECT;
2071 eh->other = STV_HIDDEN;
2073 if (! bfd_link_executable (info)
2074 && ! bfd_elf_link_record_dynamic_symbol (info, eh))
2077 elf_hash_table (info)->hgot = eh;
2079 htab->splt = bfd_get_linker_section (abfd, ".plt");
2080 htab->srelplt = bfd_get_linker_section (abfd, ".rela.plt");
2082 htab->srelgot = bfd_get_linker_section (abfd, ".rela.got");
2084 htab->sdynbss = bfd_get_linker_section (abfd, ".dynbss");
2085 htab->srelbss = bfd_get_linker_section (abfd, ".rela.bss");
2090 /* Look through the relocs for a section during the first phase, and
2091 calculate needed space in the global offset table, procedure linkage
2092 table, and dynamic reloc sections. At this point we haven't
2093 necessarily read all the input files. */
2096 elf_metag_check_relocs (bfd *abfd,
2097 struct bfd_link_info *info,
2099 const Elf_Internal_Rela *relocs)
2101 Elf_Internal_Shdr *symtab_hdr;
2102 struct elf_link_hash_entry **eh_syms;
2103 const Elf_Internal_Rela *rel;
2104 const Elf_Internal_Rela *rel_end;
2105 struct elf_metag_link_hash_table *htab;
2108 int tls_type = GOT_UNKNOWN, old_tls_type = GOT_UNKNOWN;
2110 if (bfd_link_relocatable (info))
2113 htab = metag_link_hash_table (info);
2114 dynobj = htab->etab.dynobj;
2115 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2116 eh_syms = elf_sym_hashes (abfd);
2122 rel_end = relocs + sec->reloc_count;
2123 for (rel = relocs; rel < rel_end; rel++)
2126 struct elf_metag_link_hash_entry *hh;
2127 Elf_Internal_Sym *isym;
2128 unsigned long r_symndx;
2130 r_symndx = ELF32_R_SYM (rel->r_info);
2131 r_type = ELF32_R_TYPE (rel->r_info);
2132 if (r_symndx < symtab_hdr->sh_info)
2134 /* A local symbol. */
2135 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2146 hh = (struct elf_metag_link_hash_entry *)
2147 eh_syms[r_symndx - symtab_hdr->sh_info];
2148 while (hh->eh.root.type == bfd_link_hash_indirect
2149 || hh->eh.root.type == bfd_link_hash_warning)
2150 hh = (struct elf_metag_link_hash_entry *) hh->eh.root.u.i.link;
2152 /* PR15323, ref flags aren't set for references in the same
2154 hh->eh.root.non_ir_ref = 1;
2157 /* Some relocs require a global offset table. */
2158 if (htab->sgot == NULL)
2162 case R_METAG_TLS_GD:
2163 case R_METAG_TLS_LDM:
2164 case R_METAG_TLS_IE:
2165 if (bfd_link_pic (info))
2166 info->flags |= DF_STATIC_TLS;
2169 case R_METAG_HI16_GOTOFF:
2170 case R_METAG_LO16_GOTOFF:
2171 case R_METAG_GETSET_GOTOFF:
2172 case R_METAG_GETSET_GOT:
2173 case R_METAG_HI16_GOTPC:
2174 case R_METAG_LO16_GOTPC:
2176 htab->etab.dynobj = dynobj = abfd;
2177 if (!elf_metag_create_dynamic_sections (dynobj, info))
2188 case R_METAG_TLS_IE:
2189 case R_METAG_TLS_GD:
2190 case R_METAG_GETSET_GOT:
2194 tls_type = GOT_NORMAL;
2196 case R_METAG_TLS_IE:
2197 tls_type = GOT_TLS_IE;
2199 case R_METAG_TLS_GD:
2200 tls_type = GOT_TLS_GD;
2206 hh->eh.got.refcount += 1;
2207 old_tls_type = hh->tls_type;
2211 bfd_signed_vma *local_got_refcounts;
2213 /* This is a global offset table entry for a local
2215 local_got_refcounts = elf_local_got_refcounts (abfd);
2216 if (local_got_refcounts == NULL)
2220 size = symtab_hdr->sh_info;
2221 size *= sizeof (bfd_signed_vma);
2222 /* Add in space to store the local GOT TLS types. */
2223 size += symtab_hdr->sh_info;
2224 local_got_refcounts = ((bfd_signed_vma *)
2225 bfd_zalloc (abfd, size));
2226 if (local_got_refcounts == NULL)
2228 elf_local_got_refcounts (abfd) = local_got_refcounts;
2229 memset (metag_elf_local_got_tls_type (abfd),
2230 GOT_UNKNOWN, symtab_hdr->sh_info);
2232 local_got_refcounts[r_symndx] += 1;
2233 old_tls_type = metag_elf_local_got_tls_type (abfd) [r_symndx];
2236 if (old_tls_type != tls_type)
2240 hh->tls_type = tls_type;
2244 metag_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
2250 case R_METAG_TLS_LDM:
2251 metag_link_hash_table (info)->tls_ldm_got.refcount += 1;
2254 case R_METAG_RELBRANCH_PLT:
2255 /* This symbol requires a procedure linkage table entry. We
2256 actually build the entry in adjust_dynamic_symbol,
2257 because this might be a case of linking PIC code without
2258 linking in any dynamic objects, in which case we don't
2259 need to generate a procedure linkage table after all. */
2261 /* If this is a local symbol, we resolve it directly without
2262 creating a procedure linkage table entry. */
2266 if (hh->eh.forced_local)
2269 hh->eh.needs_plt = 1;
2270 hh->eh.plt.refcount += 1;
2273 case R_METAG_HIADDR16:
2274 case R_METAG_LOADDR16:
2275 /* Let's help debug shared library creation. These relocs
2276 cannot be used in shared libs. Don't error out for
2277 sections we don't care about, such as debug sections or
2278 non-constant sections. */
2279 if (bfd_link_pic (info)
2280 && (sec->flags & SEC_ALLOC) != 0
2281 && (sec->flags & SEC_READONLY) != 0)
2286 name = hh->eh.root.root.string;
2288 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
2289 (*_bfd_error_handler)
2290 (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"),
2291 abfd, elf_metag_howto_table[r_type].name, name);
2292 bfd_set_error (bfd_error_bad_value);
2297 case R_METAG_ADDR32:
2298 case R_METAG_RELBRANCH:
2299 case R_METAG_GETSETOFF:
2300 if (hh != NULL && !bfd_link_pic (info))
2302 hh->eh.non_got_ref = 1;
2303 hh->eh.plt.refcount += 1;
2306 /* If we are creating a shared library, and this is a reloc
2307 against a global symbol, or a non PC relative reloc
2308 against a local symbol, then we need to copy the reloc
2309 into the shared library. However, if we are linking with
2310 -Bsymbolic, we do not need to copy a reloc against a
2311 global symbol which is defined in an object we are
2312 including in the link (i.e., DEF_REGULAR is set). At
2313 this point we have not seen all the input files, so it is
2314 possible that DEF_REGULAR is not set now but will be set
2315 later (it is never cleared). We account for that
2316 possibility below by storing information in the
2317 dyn_relocs field of the hash table entry. A similar
2318 situation occurs when creating shared libraries and symbol
2319 visibility changes render the symbol local.
2321 If on the other hand, we are creating an executable, we
2322 may need to keep relocations for symbols satisfied by a
2323 dynamic library if we manage to avoid copy relocs for the
2325 if ((bfd_link_pic (info)
2326 && (sec->flags & SEC_ALLOC) != 0
2327 && (r_type != R_METAG_RELBRANCH
2329 && (! info->symbolic
2330 || hh->eh.root.type == bfd_link_hash_defweak
2331 || !hh->eh.def_regular))))
2332 || (!bfd_link_pic (info)
2333 && (sec->flags & SEC_ALLOC) != 0
2335 && (hh->eh.root.type == bfd_link_hash_defweak
2336 || !hh->eh.def_regular)))
2338 struct elf_metag_dyn_reloc_entry *hdh_p;
2339 struct elf_metag_dyn_reloc_entry **hdh_head;
2342 htab->etab.dynobj = dynobj = abfd;
2344 /* When creating a shared object, we must copy these
2345 relocs into the output file. We create a reloc
2346 section in dynobj and make room for the reloc. */
2349 sreloc = _bfd_elf_make_dynamic_reloc_section
2350 (sec, htab->etab.dynobj, 2, abfd, /*rela?*/ TRUE);
2354 bfd_set_error (bfd_error_bad_value);
2358 elf_section_data (sec)->sreloc = sreloc;
2361 /* If this is a global symbol, we count the number of
2362 relocations we need for this symbol. */
2364 hdh_head = &((struct elf_metag_link_hash_entry *) hh)->dyn_relocs;
2367 /* Track dynamic relocs needed for local syms too. */
2371 sr = bfd_section_from_elf_index (abfd, isym->st_shndx);
2375 vpp = &elf_section_data (sr)->local_dynrel;
2376 hdh_head = (struct elf_metag_dyn_reloc_entry **) vpp;
2380 if (hdh_p == NULL || hdh_p->sec != sec)
2382 hdh_p = ((struct elf_metag_dyn_reloc_entry *)
2383 bfd_alloc (dynobj, sizeof *hdh_p));
2386 hdh_p->hdh_next = *hdh_head;
2390 hdh_p->relative_count = 0;
2394 if (ELF32_R_TYPE (rel->r_info) == R_METAG_RELBRANCH)
2395 hdh_p->relative_count += 1;
2399 /* This relocation describes the C++ object vtable hierarchy.
2400 Reconstruct it for later use during GC. */
2401 case R_METAG_GNU_VTINHERIT:
2402 if (!bfd_elf_gc_record_vtinherit (abfd, sec, &hh->eh,
2407 /* This relocation describes which C++ vtable entries are actually
2408 used. Record for later use during GC. */
2409 case R_METAG_GNU_VTENTRY:
2410 BFD_ASSERT (hh != NULL);
2412 && !bfd_elf_gc_record_vtentry (abfd, sec, &hh->eh, rel->r_addend))
2421 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2424 elf_metag_copy_indirect_symbol (struct bfd_link_info *info,
2425 struct elf_link_hash_entry *eh_dir,
2426 struct elf_link_hash_entry *eh_ind)
2428 struct elf_metag_link_hash_entry *hh_dir, *hh_ind;
2430 hh_dir = metag_elf_hash_entry (eh_dir);
2431 hh_ind = metag_elf_hash_entry (eh_ind);
2433 if (hh_ind->dyn_relocs != NULL)
2435 if (hh_dir->dyn_relocs != NULL)
2437 struct elf_metag_dyn_reloc_entry **hdh_pp;
2438 struct elf_metag_dyn_reloc_entry *hdh_p;
2440 if (eh_ind->root.type == bfd_link_hash_indirect)
2443 /* Add reloc counts against the weak sym to the strong sym
2444 list. Merge any entries against the same section. */
2445 for (hdh_pp = &hh_ind->dyn_relocs; (hdh_p = *hdh_pp) != NULL; )
2447 struct elf_metag_dyn_reloc_entry *hdh_q;
2449 for (hdh_q = hh_dir->dyn_relocs; hdh_q != NULL;
2450 hdh_q = hdh_q->hdh_next)
2451 if (hdh_q->sec == hdh_p->sec)
2453 hdh_q->relative_count += hdh_p->relative_count;
2454 hdh_q->count += hdh_p->count;
2455 *hdh_pp = hdh_p->hdh_next;
2459 hdh_pp = &hdh_p->hdh_next;
2461 *hdh_pp = hh_dir->dyn_relocs;
2464 hh_dir->dyn_relocs = hh_ind->dyn_relocs;
2465 hh_ind->dyn_relocs = NULL;
2468 if (eh_ind->root.type == bfd_link_hash_indirect
2469 && eh_dir->got.refcount <= 0)
2471 hh_dir->tls_type = hh_ind->tls_type;
2472 hh_ind->tls_type = GOT_UNKNOWN;
2475 _bfd_elf_link_hash_copy_indirect (info, eh_dir, eh_ind);
2478 /* Adjust a symbol defined by a dynamic object and referenced by a
2479 regular object. The current definition is in some section of the
2480 dynamic object, but we're not including those sections. We have to
2481 change the definition to something the rest of the link can
2485 elf_metag_adjust_dynamic_symbol (struct bfd_link_info *info,
2486 struct elf_link_hash_entry *eh)
2488 struct elf_metag_link_hash_table *htab;
2489 struct elf_metag_link_hash_entry *hh;
2490 struct elf_metag_dyn_reloc_entry *hdh_p;
2493 /* If this is a function, put it in the procedure linkage table. We
2494 will fill in the contents of the procedure linkage table later,
2495 when we know the address of the .got section. */
2496 if (eh->type == STT_FUNC
2499 if (eh->plt.refcount <= 0
2500 || SYMBOL_CALLS_LOCAL (info, eh)
2501 || (ELF_ST_VISIBILITY (eh->other) != STV_DEFAULT
2502 && eh->root.type == bfd_link_hash_undefweak))
2504 /* This case can occur if we saw a PLT reloc in an input
2505 file, but the symbol was never referred to by a dynamic
2506 object. In such a case, we don't actually need to build
2507 a procedure linkage table, and we can just do a PCREL
2509 eh->plt.offset = (bfd_vma) -1;
2516 eh->plt.offset = (bfd_vma) -1;
2518 /* If this is a weak symbol, and there is a real definition, the
2519 processor independent code will have arranged for us to see the
2520 real definition first, and we can just use the same value. */
2521 if (eh->u.weakdef != NULL)
2523 if (eh->u.weakdef->root.type != bfd_link_hash_defined
2524 && eh->u.weakdef->root.type != bfd_link_hash_defweak)
2526 eh->root.u.def.section = eh->u.weakdef->root.u.def.section;
2527 eh->root.u.def.value = eh->u.weakdef->root.u.def.value;
2528 eh->non_got_ref = eh->u.weakdef->non_got_ref;
2532 /* This is a reference to a symbol defined by a dynamic object which
2533 is not a function. */
2535 /* If we are creating a shared library, we must presume that the
2536 only references to the symbol are via the global offset table.
2537 For such cases we need not do anything here; the relocations will
2538 be handled correctly by relocate_section. */
2539 if (bfd_link_pic (info))
2542 /* If there are no references to this symbol that do not use the
2543 GOT, we don't need to generate a copy reloc. */
2544 if (!eh->non_got_ref)
2547 /* If -z nocopyreloc was given, we won't generate them either. */
2548 if (info->nocopyreloc)
2550 eh->non_got_ref = 0;
2554 hh = (struct elf_metag_link_hash_entry *) eh;
2555 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
2557 s = hdh_p->sec->output_section;
2558 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2562 /* If we didn't find any dynamic relocs in read-only sections, then
2563 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2566 eh->non_got_ref = 0;
2570 /* We must allocate the symbol in our .dynbss section, which will
2571 become part of the .bss section of the executable. There will be
2572 an entry for this symbol in the .dynsym section. The dynamic
2573 object will contain position independent code, so all references
2574 from the dynamic object to this symbol will go through the global
2575 offset table. The dynamic linker will use the .dynsym entry to
2576 determine the address it must put in the global offset table, so
2577 both the dynamic object and the regular object will refer to the
2578 same memory location for the variable. */
2580 htab = metag_link_hash_table (info);
2582 /* We must generate a COPY reloc to tell the dynamic linker to
2583 copy the initial value out of the dynamic object and into the
2584 runtime process image. */
2585 if ((eh->root.u.def.section->flags & SEC_ALLOC) != 0 && eh->size != 0)
2587 htab->srelbss->size += sizeof (Elf32_External_Rela);
2593 return _bfd_elf_adjust_dynamic_copy (info, eh, s);
2596 /* Allocate space in .plt, .got and associated reloc sections for
2600 allocate_dynrelocs (struct elf_link_hash_entry *eh, void *inf)
2602 struct bfd_link_info *info;
2603 struct elf_metag_link_hash_table *htab;
2604 struct elf_metag_link_hash_entry *hh;
2605 struct elf_metag_dyn_reloc_entry *hdh_p;
2607 if (eh->root.type == bfd_link_hash_indirect)
2610 if (eh->root.type == bfd_link_hash_warning)
2611 eh = (struct elf_link_hash_entry *) eh->root.u.i.link;
2614 htab = metag_link_hash_table (info);
2616 if (htab->etab.dynamic_sections_created
2617 && eh->plt.refcount > 0)
2619 /* Make sure this symbol is output as a dynamic symbol.
2620 Undefined weak syms won't yet be marked as dynamic. */
2621 if (eh->dynindx == -1
2622 && !eh->forced_local)
2624 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2628 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), eh))
2630 asection *s = htab->splt;
2632 /* If this is the first .plt entry, make room for the special
2635 s->size += PLT_ENTRY_SIZE;
2637 eh->plt.offset = s->size;
2639 /* If this symbol is not defined in a regular file, and we are
2640 not generating a shared library, then set the symbol to this
2641 location in the .plt. This is required to make function
2642 pointers compare as equal between the normal executable and
2643 the shared library. */
2644 if (! bfd_link_pic (info)
2645 && !eh->def_regular)
2647 eh->root.u.def.section = s;
2648 eh->root.u.def.value = eh->plt.offset;
2651 /* Make room for this entry. */
2652 s->size += PLT_ENTRY_SIZE;
2654 /* We also need to make an entry in the .got.plt section, which
2655 will be placed in the .got section by the linker script. */
2656 htab->sgotplt->size += 4;
2658 /* We also need to make an entry in the .rel.plt section. */
2659 htab->srelplt->size += sizeof (Elf32_External_Rela);
2663 eh->plt.offset = (bfd_vma) -1;
2669 eh->plt.offset = (bfd_vma) -1;
2673 if (eh->got.refcount > 0)
2677 int tls_type = metag_elf_hash_entry (eh)->tls_type;
2679 /* Make sure this symbol is output as a dynamic symbol.
2680 Undefined weak syms won't yet be marked as dynamic. */
2681 if (eh->dynindx == -1
2682 && !eh->forced_local)
2684 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2690 eh->got.offset = s->size;
2692 /* R_METAG_TLS_GD needs 2 consecutive GOT slots. */
2693 if (tls_type == GOT_TLS_GD)
2695 dyn = htab->etab.dynamic_sections_created;
2696 /* R_METAG_TLS_IE needs one dynamic relocation if dynamic,
2697 R_METAG_TLS_GD needs one if local symbol and two if global. */
2698 if ((tls_type == GOT_TLS_GD && eh->dynindx == -1)
2699 || (tls_type == GOT_TLS_IE && dyn))
2700 htab->srelgot->size += sizeof (Elf32_External_Rela);
2701 else if (tls_type == GOT_TLS_GD)
2702 htab->srelgot->size += 2 * sizeof (Elf32_External_Rela);
2703 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2704 bfd_link_pic (info),
2706 htab->srelgot->size += sizeof (Elf32_External_Rela);
2709 eh->got.offset = (bfd_vma) -1;
2711 hh = (struct elf_metag_link_hash_entry *) eh;
2712 if (hh->dyn_relocs == NULL)
2715 /* If this is a -Bsymbolic shared link, then we need to discard all
2716 space allocated for dynamic pc-relative relocs against symbols
2717 defined in a regular object. For the normal shared case, discard
2718 space for relocs that have become local due to symbol visibility
2720 if (bfd_link_pic (info))
2722 if (SYMBOL_CALLS_LOCAL (info, eh))
2724 struct elf_metag_dyn_reloc_entry **hdh_pp;
2726 for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL; )
2728 hdh_p->count -= hdh_p->relative_count;
2729 hdh_p->relative_count = 0;
2730 if (hdh_p->count == 0)
2731 *hdh_pp = hdh_p->hdh_next;
2733 hdh_pp = &hdh_p->hdh_next;
2737 /* Also discard relocs on undefined weak syms with non-default
2739 if (hh->dyn_relocs != NULL
2740 && eh->root.type == bfd_link_hash_undefweak)
2742 if (ELF_ST_VISIBILITY (eh->other) != STV_DEFAULT)
2743 hh->dyn_relocs = NULL;
2745 /* Make sure undefined weak symbols are output as a dynamic
2747 else if (eh->dynindx == -1
2748 && !eh->forced_local)
2750 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2757 /* For the non-shared case, discard space for relocs against
2758 symbols which turn out to need copy relocs or are not
2760 if (!eh->non_got_ref
2761 && ((eh->def_dynamic
2762 && !eh->def_regular)
2763 || (htab->etab.dynamic_sections_created
2764 && (eh->root.type == bfd_link_hash_undefweak
2765 || eh->root.type == bfd_link_hash_undefined))))
2767 /* Make sure this symbol is output as a dynamic symbol.
2768 Undefined weak syms won't yet be marked as dynamic. */
2769 if (eh->dynindx == -1
2770 && !eh->forced_local)
2772 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2776 /* If that succeeded, we know we'll be keeping all the
2778 if (eh->dynindx != -1)
2782 hh->dyn_relocs = NULL;
2788 /* Finally, allocate space. */
2789 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
2791 asection *sreloc = elf_section_data (hdh_p->sec)->sreloc;
2792 sreloc->size += hdh_p->count * sizeof (Elf32_External_Rela);
2798 /* Find any dynamic relocs that apply to read-only sections. */
2801 readonly_dynrelocs (struct elf_link_hash_entry *eh, void *inf)
2803 struct elf_metag_link_hash_entry *hh;
2804 struct elf_metag_dyn_reloc_entry *hdh_p;
2806 if (eh->root.type == bfd_link_hash_warning)
2807 eh = (struct elf_link_hash_entry *) eh->root.u.i.link;
2809 hh = (struct elf_metag_link_hash_entry *) eh;
2810 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
2812 asection *s = hdh_p->sec->output_section;
2814 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2816 struct bfd_link_info *info = inf;
2818 info->flags |= DF_TEXTREL;
2820 /* Not an error, just cut short the traversal. */
2827 /* Set the sizes of the dynamic sections. */
2830 elf_metag_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2831 struct bfd_link_info *info)
2833 struct elf_metag_link_hash_table *htab;
2839 htab = metag_link_hash_table (info);
2840 dynobj = htab->etab.dynobj;
2844 if (htab->etab.dynamic_sections_created)
2846 /* Set the contents of the .interp section to the interpreter. */
2847 if (bfd_link_executable (info) && !info->nointerp)
2849 s = bfd_get_linker_section (dynobj, ".interp");
2852 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2853 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2857 /* Set up .got offsets for local syms, and space for local dynamic
2859 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2861 bfd_signed_vma *local_got;
2862 bfd_signed_vma *end_local_got;
2863 bfd_size_type locsymcount;
2864 Elf_Internal_Shdr *symtab_hdr;
2866 char *local_tls_type;
2868 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2871 for (s = ibfd->sections; s != NULL; s = s->next)
2873 struct elf_metag_dyn_reloc_entry *hdh_p;
2875 for (hdh_p = ((struct elf_metag_dyn_reloc_entry *)
2876 elf_section_data (s)->local_dynrel);
2878 hdh_p = hdh_p->hdh_next)
2880 if (!bfd_is_abs_section (hdh_p->sec)
2881 && bfd_is_abs_section (hdh_p->sec->output_section))
2883 /* Input section has been discarded, either because
2884 it is a copy of a linkonce section or due to
2885 linker script /DISCARD/, so we'll be discarding
2888 else if (hdh_p->count != 0)
2890 srel = elf_section_data (hdh_p->sec)->sreloc;
2891 srel->size += hdh_p->count * sizeof (Elf32_External_Rela);
2892 if ((hdh_p->sec->output_section->flags & SEC_READONLY) != 0)
2893 info->flags |= DF_TEXTREL;
2898 local_got = elf_local_got_refcounts (ibfd);
2902 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2903 locsymcount = symtab_hdr->sh_info;
2904 end_local_got = local_got + locsymcount;
2905 local_tls_type = metag_elf_local_got_tls_type (ibfd);
2907 srel = htab->srelgot;
2908 for (; local_got < end_local_got; ++local_got)
2912 *local_got = s->size;
2913 s->size += GOT_ENTRY_SIZE;
2914 /* R_METAG_TLS_GD relocs need 2 consecutive GOT entries. */
2915 if (*local_tls_type == GOT_TLS_GD)
2917 if (bfd_link_pic (info))
2918 srel->size += sizeof (Elf32_External_Rela);
2921 *local_got = (bfd_vma) -1;
2926 if (htab->tls_ldm_got.refcount > 0)
2928 /* Allocate 2 got entries and 1 dynamic reloc for R_METAG_TLS_LDM
2930 htab->tls_ldm_got.offset = htab->sgot->size;
2931 htab->sgot->size += 8;
2932 htab->srelgot->size += sizeof (Elf32_External_Rela);
2935 htab->tls_ldm_got.offset = -1;
2937 /* Allocate global sym .plt and .got entries, and space for global
2938 sym dynamic relocs. */
2939 elf_link_hash_traverse (&htab->etab, allocate_dynrelocs, info);
2941 /* We now have determined the sizes of the various dynamic sections.
2942 Allocate memory for them. */
2944 for (s = dynobj->sections; s != NULL; s = s->next)
2946 bfd_boolean reloc_section = FALSE;
2948 if ((s->flags & SEC_LINKER_CREATED) == 0)
2953 || s == htab->sgotplt
2954 || s == htab->sdynbss)
2956 /* Strip this section if we don't need it; see the
2959 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2961 if (s->size != 0 && s != htab->srelplt)
2964 /* We use the reloc_count field as a counter if we need
2965 to copy relocs into the output file. */
2967 reloc_section = TRUE;
2971 /* It's not one of our sections, so don't allocate space. */
2977 /* If we don't need this section, strip it from the
2978 output file. This is mostly to handle .rela.bss and
2979 .rela.plt. We must create both sections in
2980 create_dynamic_sections, because they must be created
2981 before the linker maps input sections to output
2982 sections. The linker does that before
2983 adjust_dynamic_symbol is called, and it is that
2984 function which decides whether anything needs to go
2985 into these sections. */
2986 s->flags |= SEC_EXCLUDE;
2990 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2993 /* Allocate memory for the section contents. */
2994 s->contents = bfd_zalloc (dynobj, s->size);
2995 if (s->contents == NULL)
2997 else if (reloc_section)
2999 unsigned char *contents = s->contents;
3000 Elf32_External_Rela reloc;
3002 /* Fill the reloc section with a R_METAG_NONE type reloc. */
3003 memset(&reloc, 0, sizeof(Elf32_External_Rela));
3004 reloc.r_info[0] = R_METAG_NONE;
3005 for (; contents < (s->contents + s->size);
3006 contents += sizeof(Elf32_External_Rela))
3008 memcpy(contents, &reloc, sizeof(Elf32_External_Rela));
3013 if (htab->etab.dynamic_sections_created)
3015 /* Add some entries to the .dynamic section. We fill in the
3016 values later, in elf_metag_finish_dynamic_sections, but we
3017 must add the entries now so that we get the correct size for
3018 the .dynamic section. The DT_DEBUG entry is filled in by the
3019 dynamic linker and used by the debugger. */
3020 #define add_dynamic_entry(TAG, VAL) \
3021 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3023 if (!add_dynamic_entry (DT_PLTGOT, 0))
3026 if (bfd_link_executable (info))
3028 if (!add_dynamic_entry (DT_DEBUG, 0))
3032 if (htab->srelplt->size != 0)
3034 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3035 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3036 || !add_dynamic_entry (DT_JMPREL, 0))
3042 if (!add_dynamic_entry (DT_RELA, 0)
3043 || !add_dynamic_entry (DT_RELASZ, 0)
3044 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3047 /* If any dynamic relocs apply to a read-only section,
3048 then we need a DT_TEXTREL entry. */
3049 if ((info->flags & DF_TEXTREL) == 0)
3050 elf_link_hash_traverse (&htab->etab, readonly_dynrelocs, info);
3052 if ((info->flags & DF_TEXTREL) != 0)
3054 if (!add_dynamic_entry (DT_TEXTREL, 0))
3059 #undef add_dynamic_entry
3064 /* Finish up dynamic symbol handling. We set the contents of various
3065 dynamic sections here. */
3068 elf_metag_finish_dynamic_symbol (bfd *output_bfd,
3069 struct bfd_link_info *info,
3070 struct elf_link_hash_entry *eh,
3071 Elf_Internal_Sym *sym)
3073 struct elf_metag_link_hash_table *htab;
3074 Elf_Internal_Rela rel;
3077 htab = metag_link_hash_table (info);
3079 if (eh->plt.offset != (bfd_vma) -1)
3089 if (eh->plt.offset & 1)
3092 BFD_ASSERT (eh->dynindx != -1);
3095 sgot = htab->sgotplt;
3096 srela = htab->srelplt;
3097 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
3099 /* Get the index in the procedure linkage table which
3100 corresponds to this symbol. This is the index of this symbol
3101 in all the symbols for which we are making plt entries. The
3102 first entry in the procedure linkage table is reserved. */
3103 plt_index = eh->plt.offset / PLT_ENTRY_SIZE - 1;
3105 /* Get the offset into the .got.plt table of the entry that
3106 corresponds to this function. */
3107 got_offset = plt_index * GOT_ENTRY_SIZE;
3109 BFD_ASSERT (got_offset < (1 << 16));
3111 got_entry = sgot->output_section->vma
3112 + sgot->output_offset
3115 BFD_ASSERT (plt_index < (1 << 16));
3117 /* Fill in the entry in the procedure linkage table. */
3118 if (! bfd_link_pic (info))
3120 bfd_put_32 (output_bfd,
3122 | (((got_entry >> 16) & 0xffff) << 3)),
3123 splt->contents + eh->plt.offset);
3124 bfd_put_32 (output_bfd,
3126 | ((got_entry & 0xffff) << 3)),
3127 splt->contents + eh->plt.offset + 4);
3128 bfd_put_32 (output_bfd, plt_entry[2],
3129 splt->contents + eh->plt.offset + 8);
3130 bfd_put_32 (output_bfd,
3131 (plt_entry[3] | (plt_index << 3)),
3132 splt->contents + eh->plt.offset + 12);
3133 bfd_put_32 (output_bfd,
3135 | ((((unsigned int) ((- (eh->plt.offset + 16)) >> 2)) & 0x7ffff) << 5)),
3136 splt->contents + eh->plt.offset + 16);
3140 bfd_vma addr = got_entry - (splt->output_section->vma +
3141 splt->output_offset + eh->plt.offset);
3143 bfd_put_32 (output_bfd,
3144 plt_pic_entry[0] | (((addr >> 16) & 0xffff) << 3),
3145 splt->contents + eh->plt.offset);
3146 bfd_put_32 (output_bfd,
3147 plt_pic_entry[1] | ((addr & 0xffff) << 3),
3148 splt->contents + eh->plt.offset + 4);
3149 bfd_put_32 (output_bfd, plt_pic_entry[2],
3150 splt->contents + eh->plt.offset + 8);
3151 bfd_put_32 (output_bfd,
3152 (plt_pic_entry[3] | (plt_index << 3)),
3153 splt->contents + eh->plt.offset + 12);
3154 bfd_put_32 (output_bfd,
3156 + ((((unsigned int) ((- (eh->plt.offset + 16)) >> 2)) & 0x7ffff) << 5)),
3157 splt->contents + eh->plt.offset + 16);
3160 /* Fill in the entry in the global offset table. */
3161 bfd_put_32 (output_bfd,
3162 (splt->output_section->vma
3163 + splt->output_offset
3165 + 12), /* offset within PLT entry */
3166 sgot->contents + got_offset);
3168 /* Fill in the entry in the .rela.plt section. */
3169 rel.r_offset = (sgot->output_section->vma
3170 + sgot->output_offset
3172 rel.r_info = ELF32_R_INFO (eh->dynindx, R_METAG_JMP_SLOT);
3174 loc = htab->srelplt->contents;
3175 loc += plt_index * sizeof(Elf32_External_Rela);
3176 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
3178 if (!eh->def_regular)
3180 /* Mark the symbol as undefined, rather than as defined in
3181 the .plt section. Leave the value alone. */
3182 sym->st_shndx = SHN_UNDEF;
3186 if (eh->got.offset != (bfd_vma) -1
3187 && (metag_elf_hash_entry (eh)->tls_type & GOT_TLS_GD) == 0
3188 && (metag_elf_hash_entry (eh)->tls_type & GOT_TLS_IE) == 0)
3190 /* This symbol has an entry in the global offset table. Set it
3193 rel.r_offset = ((eh->got.offset &~ (bfd_vma) 1)
3194 + htab->sgot->output_offset
3195 + htab->sgot->output_section->vma);
3197 /* If this is a -Bsymbolic link and the symbol is defined
3198 locally or was forced to be local because of a version file,
3199 we just want to emit a RELATIVE reloc. The entry in the
3200 global offset table will already have been initialized in the
3201 relocate_section function. */
3202 if (bfd_link_pic (info)
3203 && (info->symbolic || eh->dynindx == -1)
3206 rel.r_info = ELF32_R_INFO (0, R_METAG_RELATIVE);
3207 rel.r_addend = (eh->root.u.def.value
3208 + eh->root.u.def.section->output_offset
3209 + eh->root.u.def.section->output_section->vma);
3213 if ((eh->got.offset & 1) != 0)
3215 bfd_put_32 (output_bfd, 0, htab->sgot->contents + eh->got.offset);
3216 rel.r_info = ELF32_R_INFO (eh->dynindx, R_METAG_GLOB_DAT);
3220 loc = htab->srelgot->contents;
3221 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
3222 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
3229 /* This symbol needs a copy reloc. Set it up. */
3231 if (! (eh->dynindx != -1
3232 && (eh->root.type == bfd_link_hash_defined
3233 || eh->root.type == bfd_link_hash_defweak)))
3238 rel.r_offset = (eh->root.u.def.value
3239 + eh->root.u.def.section->output_offset
3240 + eh->root.u.def.section->output_section->vma);
3242 rel.r_info = ELF32_R_INFO (eh->dynindx, R_METAG_COPY);
3243 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
3244 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
3247 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
3248 if (eh->root.root.string[0] == '_'
3249 && (strcmp (eh->root.root.string, "_DYNAMIC") == 0
3250 || eh == htab->etab.hgot))
3252 sym->st_shndx = SHN_ABS;
3258 /* Set the Meta ELF ABI version. */
3261 elf_metag_post_process_headers (bfd * abfd, struct bfd_link_info * link_info)
3263 Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */
3265 _bfd_elf_post_process_headers (abfd, link_info);
3266 i_ehdrp = elf_elfheader (abfd);
3267 i_ehdrp->e_ident[EI_ABIVERSION] = METAG_ELF_ABI_VERSION;
3270 /* Used to decide how to sort relocs in an optimal manner for the
3271 dynamic linker, before writing them out. */
3273 static enum elf_reloc_type_class
3274 elf_metag_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3275 const asection *rel_sec ATTRIBUTE_UNUSED,
3276 const Elf_Internal_Rela *rela)
3278 switch ((int) ELF32_R_TYPE (rela->r_info))
3280 case R_METAG_RELATIVE:
3281 return reloc_class_relative;
3282 case R_METAG_JMP_SLOT:
3283 return reloc_class_plt;
3285 return reloc_class_copy;
3287 return reloc_class_normal;
3291 /* Finish up the dynamic sections. */
3294 elf_metag_finish_dynamic_sections (bfd *output_bfd,
3295 struct bfd_link_info *info)
3298 struct elf_metag_link_hash_table *htab;
3301 htab = metag_link_hash_table (info);
3302 dynobj = htab->etab.dynobj;
3304 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
3306 if (htab->etab.dynamic_sections_created)
3309 Elf32_External_Dyn *dyncon, *dynconend;
3314 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3315 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3316 for (; dyncon < dynconend; dyncon++)
3318 Elf_Internal_Dyn dyn;
3321 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3330 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3331 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3336 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3337 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3342 dyn.d_un.d_val = s->size;
3343 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3347 /* Don't count procedure linkage table relocs in the
3348 overall reloc count. */
3349 if (htab->srelplt) {
3351 dyn.d_un.d_val -= s->size;
3353 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3357 /* We may not be using the standard ELF linker script.
3358 If .rela.plt is the first .rela section, we adjust
3359 DT_RELA to not include it. */
3360 if (htab->srelplt) {
3362 if (dyn.d_un.d_ptr == s->output_section->vma + s->output_offset)
3363 dyn.d_un.d_ptr += s->size;
3365 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3371 /* Fill in the first entry in the procedure linkage table. */
3373 if (splt && splt->size > 0)
3376 /* addr = .got + 4 */
3377 addr = htab->sgot->output_section->vma +
3378 htab->sgot->output_offset + 4;
3379 if (bfd_link_pic (info))
3381 addr -= splt->output_section->vma + splt->output_offset;
3382 bfd_put_32 (output_bfd,
3383 plt0_pic_entry[0] | (((addr >> 16) & 0xffff) << 3),
3385 bfd_put_32 (output_bfd,
3386 plt0_pic_entry[1] | ((addr & 0xffff) << 3),
3387 splt->contents + 4);
3388 bfd_put_32 (output_bfd, plt0_pic_entry[2], splt->contents + 8);
3389 bfd_put_32 (output_bfd, plt0_pic_entry[3], splt->contents + 12);
3390 bfd_put_32 (output_bfd, plt0_pic_entry[4], splt->contents + 16);
3394 bfd_put_32 (output_bfd,
3395 plt0_entry[0] | (((addr >> 16) & 0xffff) << 3),
3397 bfd_put_32 (output_bfd,
3398 plt0_entry[1] | ((addr & 0xffff) << 3),
3399 splt->contents + 4);
3400 bfd_put_32 (output_bfd, plt0_entry[2], splt->contents + 8);
3401 bfd_put_32 (output_bfd, plt0_entry[3], splt->contents + 12);
3402 bfd_put_32 (output_bfd, plt0_entry[4], splt->contents + 16);
3405 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
3410 if (htab->sgot != NULL && htab->sgot->size != 0)
3412 /* Fill in the first entry in the global offset table.
3413 We use it to point to our dynamic section, if we have one. */
3414 bfd_put_32 (output_bfd,
3415 sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0,
3416 htab->sgot->contents);
3418 /* The second entry is reserved for use by the dynamic linker. */
3419 memset (htab->sgot->contents + GOT_ENTRY_SIZE, 0, GOT_ENTRY_SIZE);
3421 /* Set .got entry size. */
3422 elf_section_data (htab->sgot->output_section)
3423 ->this_hdr.sh_entsize = GOT_ENTRY_SIZE;
3429 /* Return the section that should be marked against GC for a given
3433 elf_metag_gc_mark_hook (asection *sec,
3434 struct bfd_link_info *info,
3435 Elf_Internal_Rela *rela,
3436 struct elf_link_hash_entry *hh,
3437 Elf_Internal_Sym *sym)
3440 switch ((unsigned int) ELF32_R_TYPE (rela->r_info))
3442 case R_METAG_GNU_VTINHERIT:
3443 case R_METAG_GNU_VTENTRY:
3447 return _bfd_elf_gc_mark_hook (sec, info, rela, hh, sym);
3450 /* Update the got and plt entry reference counts for the section being
3454 elf_metag_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED,
3455 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3456 asection *sec ATTRIBUTE_UNUSED,
3457 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
3459 Elf_Internal_Shdr *symtab_hdr;
3460 struct elf_link_hash_entry **eh_syms;
3461 bfd_signed_vma *local_got_refcounts;
3462 bfd_signed_vma *local_plt_refcounts;
3463 const Elf_Internal_Rela *rel, *relend;
3465 if (bfd_link_relocatable (info))
3468 elf_section_data (sec)->local_dynrel = NULL;
3470 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3471 eh_syms = elf_sym_hashes (abfd);
3472 local_got_refcounts = elf_local_got_refcounts (abfd);
3473 local_plt_refcounts = local_got_refcounts;
3474 if (local_plt_refcounts != NULL)
3475 local_plt_refcounts += symtab_hdr->sh_info;
3477 relend = relocs + sec->reloc_count;
3478 for (rel = relocs; rel < relend; rel++)
3480 unsigned long r_symndx;
3481 unsigned int r_type;
3482 struct elf_link_hash_entry *eh = NULL;
3484 r_symndx = ELF32_R_SYM (rel->r_info);
3485 if (r_symndx >= symtab_hdr->sh_info)
3487 struct elf_metag_link_hash_entry *hh;
3488 struct elf_metag_dyn_reloc_entry **hdh_pp;
3489 struct elf_metag_dyn_reloc_entry *hdh_p;
3491 eh = eh_syms[r_symndx - symtab_hdr->sh_info];
3492 while (eh->root.type == bfd_link_hash_indirect
3493 || eh->root.type == bfd_link_hash_warning)
3494 eh = (struct elf_link_hash_entry *) eh->root.u.i.link;
3495 hh = (struct elf_metag_link_hash_entry *) eh;
3497 for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL;
3498 hdh_pp = &hdh_p->hdh_next)
3499 if (hdh_p->sec == sec)
3501 /* Everything must go for SEC. */
3502 *hdh_pp = hdh_p->hdh_next;
3507 r_type = ELF32_R_TYPE (rel->r_info);
3510 case R_METAG_TLS_LDM:
3511 if (metag_link_hash_table (info)->tls_ldm_got.refcount > 0)
3512 metag_link_hash_table (info)->tls_ldm_got.refcount -= 1;
3514 case R_METAG_TLS_IE:
3515 case R_METAG_TLS_GD:
3516 case R_METAG_GETSET_GOT:
3519 if (eh->got.refcount > 0)
3520 eh->got.refcount -= 1;
3522 else if (local_got_refcounts != NULL)
3524 if (local_got_refcounts[r_symndx] > 0)
3525 local_got_refcounts[r_symndx] -= 1;
3529 case R_METAG_RELBRANCH_PLT:
3532 if (eh->plt.refcount > 0)
3533 eh->plt.refcount -= 1;
3537 case R_METAG_ADDR32:
3538 case R_METAG_HIADDR16:
3539 case R_METAG_LOADDR16:
3540 case R_METAG_GETSETOFF:
3541 case R_METAG_RELBRANCH:
3544 struct elf_metag_link_hash_entry *hh;
3545 struct elf_metag_dyn_reloc_entry **hdh_pp;
3546 struct elf_metag_dyn_reloc_entry *hdh_p;
3548 if (!bfd_link_pic (info) && eh->plt.refcount > 0)
3549 eh->plt.refcount -= 1;
3551 hh = (struct elf_metag_link_hash_entry *) eh;
3553 for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL;
3554 hdh_pp = &hdh_p->hdh_next)
3555 if (hdh_p->sec == sec)
3557 if (ELF32_R_TYPE (rel->r_info) == R_METAG_RELBRANCH)
3558 hdh_p->relative_count -= 1;
3560 if (hdh_p->count == 0)
3561 *hdh_pp = hdh_p->hdh_next;
3575 /* Determine the type of stub needed, if any, for a call. */
3577 static enum elf_metag_stub_type
3578 metag_type_of_stub (asection *input_sec,
3579 const Elf_Internal_Rela *rel,
3580 struct elf_metag_link_hash_entry *hh,
3581 bfd_vma destination,
3582 struct bfd_link_info *info ATTRIBUTE_UNUSED)
3585 bfd_vma branch_offset;
3586 bfd_vma max_branch_offset;
3589 !(hh->eh.root.type == bfd_link_hash_defined
3590 || hh->eh.root.type == bfd_link_hash_defweak))
3591 return metag_stub_none;
3593 /* Determine where the call point is. */
3594 location = (input_sec->output_offset
3595 + input_sec->output_section->vma
3598 branch_offset = destination - location;
3600 /* Determine if a long branch stub is needed. Meta branch offsets
3601 are signed 19 bits 4 byte aligned. */
3602 max_branch_offset = (1 << (BRANCH_BITS-1)) << 2;
3604 if (branch_offset + max_branch_offset >= 2*max_branch_offset)
3606 if (bfd_link_pic (info))
3607 return metag_stub_long_branch_shared;
3609 return metag_stub_long_branch;
3612 return metag_stub_none;
3615 #define MOVT_A0_3 0x82180005
3616 #define JUMP_A0_3 0xac180003
3618 #define MOVT_A1LBP 0x83080005
3619 #define ADD_A1LBP 0x83080000
3621 #define ADDT_A0_3_CPC 0x82980001
3622 #define ADD_A0_3_A0_3 0x82180000
3623 #define MOV_PC_A0_3 0xa3180ca0
3626 metag_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg ATTRIBUTE_UNUSED)
3628 struct elf_metag_stub_hash_entry *hsh;
3635 /* Massage our args to the form they really have. */
3636 hsh = (struct elf_metag_stub_hash_entry *) gen_entry;
3638 stub_sec = hsh->stub_sec;
3640 /* Make a note of the offset within the stubs for this entry. */
3641 hsh->stub_offset = stub_sec->size;
3642 loc = stub_sec->contents + hsh->stub_offset;
3644 stub_bfd = stub_sec->owner;
3646 switch (hsh->stub_type)
3648 case metag_stub_long_branch_shared:
3649 /* A PIC long branch stub is an ADDT and an ADD instruction used to
3650 calculate the jump target using A0.3 as a temporary. Then a MOV
3651 to PC carries out the jump. */
3652 sym_value = (hsh->target_value
3653 + hsh->target_section->output_offset
3654 + hsh->target_section->output_section->vma
3657 sym_value -= (hsh->stub_offset
3658 + stub_sec->output_offset
3659 + stub_sec->output_section->vma);
3661 bfd_put_32 (stub_bfd, ADDT_A0_3_CPC | (((sym_value >> 16) & 0xffff) << 3),
3664 bfd_put_32 (stub_bfd, ADD_A0_3_A0_3 | ((sym_value & 0xffff) << 3),
3667 bfd_put_32 (stub_bfd, MOV_PC_A0_3, loc + 8);
3671 case metag_stub_long_branch:
3672 /* A standard long branch stub is a MOVT instruction followed by a
3673 JUMP instruction using the A0.3 register as a temporary. This is
3674 the same method used by the LDLK linker (patch.c). */
3675 sym_value = (hsh->target_value
3676 + hsh->target_section->output_offset
3677 + hsh->target_section->output_section->vma
3680 bfd_put_32 (stub_bfd, MOVT_A0_3 | (((sym_value >> 16) & 0xffff) << 3),
3683 bfd_put_32 (stub_bfd, JUMP_A0_3 | ((sym_value & 0xffff) << 3), loc + 4);
3692 stub_sec->size += size;
3696 /* As above, but don't actually build the stub. Just bump offset so
3697 we know stub section sizes. */
3700 metag_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg ATTRIBUTE_UNUSED)
3702 struct elf_metag_stub_hash_entry *hsh;
3705 /* Massage our args to the form they really have. */
3706 hsh = (struct elf_metag_stub_hash_entry *) gen_entry;
3708 if (hsh->stub_type == metag_stub_long_branch)
3710 else if (hsh->stub_type == metag_stub_long_branch_shared)
3713 hsh->stub_sec->size += size;
3717 /* Set up various things so that we can make a list of input sections
3718 for each output section included in the link. Returns -1 on error,
3719 0 when no stubs will be needed, and 1 on success. */
3722 elf_metag_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info)
3725 unsigned int bfd_count;
3726 unsigned int top_id, top_index;
3728 asection **input_list, **list;
3730 struct elf_metag_link_hash_table *htab = metag_link_hash_table (info);
3732 /* Count the number of input BFDs and find the top input section id. */
3733 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
3735 input_bfd = input_bfd->link.next)
3738 for (section = input_bfd->sections;
3740 section = section->next)
3742 if (top_id < section->id)
3743 top_id = section->id;
3747 htab->bfd_count = bfd_count;
3749 amt = sizeof (struct map_stub) * (top_id + 1);
3750 htab->stub_group = bfd_zmalloc (amt);
3751 if (htab->stub_group == NULL)
3754 /* We can't use output_bfd->section_count here to find the top output
3755 section index as some sections may have been removed, and
3756 strip_excluded_output_sections doesn't renumber the indices. */
3757 for (section = output_bfd->sections, top_index = 0;
3759 section = section->next)
3761 if (top_index < section->index)
3762 top_index = section->index;
3765 htab->top_index = top_index;
3766 amt = sizeof (asection *) * (top_index + 1);
3767 input_list = bfd_malloc (amt);
3768 htab->input_list = input_list;
3769 if (input_list == NULL)
3772 /* For sections we aren't interested in, mark their entries with a
3773 value we can check later. */
3774 list = input_list + top_index;
3776 *list = bfd_abs_section_ptr;
3777 while (list-- != input_list);
3779 for (section = output_bfd->sections;
3781 section = section->next)
3783 /* FIXME: This is a bit of hack. Currently our .ctors and .dtors
3784 * have PC relative relocs in them but no code flag set. */
3785 if (((section->flags & SEC_CODE) != 0) ||
3786 strcmp(".ctors", section->name) ||
3787 strcmp(".dtors", section->name))
3788 input_list[section->index] = NULL;
3794 /* The linker repeatedly calls this function for each input section,
3795 in the order that input sections are linked into output sections.
3796 Build lists of input sections to determine groupings between which
3797 we may insert linker stubs. */
3800 elf_metag_next_input_section (struct bfd_link_info *info, asection *isec)
3802 struct elf_metag_link_hash_table *htab = metag_link_hash_table (info);
3804 if (isec->output_section->index <= htab->top_index)
3806 asection **list = htab->input_list + isec->output_section->index;
3807 if (*list != bfd_abs_section_ptr)
3809 /* Steal the link_sec pointer for our list. */
3810 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3811 /* This happens to make the list in reverse order,
3812 which is what we want. */
3813 PREV_SEC (isec) = *list;
3819 /* See whether we can group stub sections together. Grouping stub
3820 sections may result in fewer stubs. More importantly, we need to
3821 put all .init* and .fini* stubs at the beginning of the .init or
3822 .fini output sections respectively, because glibc splits the
3823 _init and _fini functions into multiple parts. Putting a stub in
3824 the middle of a function is not a good idea. */
3827 group_sections (struct elf_metag_link_hash_table *htab,
3828 bfd_size_type stub_group_size,
3829 bfd_boolean stubs_always_before_branch)
3831 asection **list = htab->input_list + htab->top_index;
3834 asection *tail = *list;
3835 if (tail == bfd_abs_section_ptr)
3837 while (tail != NULL)
3841 bfd_size_type total;
3842 bfd_boolean big_sec;
3846 big_sec = total >= stub_group_size;
3848 while ((prev = PREV_SEC (curr)) != NULL
3849 && ((total += curr->output_offset - prev->output_offset)
3853 /* OK, the size from the start of CURR to the end is less
3854 than stub_group_size bytes and thus can be handled by one stub
3855 section. (or the tail section is itself larger than
3856 stub_group_size bytes, in which case we may be toast.)
3857 We should really be keeping track of the total size of
3858 stubs added here, as stubs contribute to the final output
3862 prev = PREV_SEC (tail);
3863 /* Set up this stub group. */
3864 htab->stub_group[tail->id].link_sec = curr;
3866 while (tail != curr && (tail = prev) != NULL);
3868 /* But wait, there's more! Input sections up to stub_group_size
3869 bytes before the stub section can be handled by it too.
3870 Don't do this if we have a really large section after the
3871 stubs, as adding more stubs increases the chance that
3872 branches may not reach into the stub section. */
3873 if (!stubs_always_before_branch && !big_sec)
3877 && ((total += tail->output_offset - prev->output_offset)
3881 prev = PREV_SEC (tail);
3882 htab->stub_group[tail->id].link_sec = curr;
3888 while (list-- != htab->input_list);
3889 free (htab->input_list);
3893 /* Read in all local syms for all input bfds.
3894 Returns -1 on error, 0 otherwise. */
3897 get_local_syms (bfd *output_bfd ATTRIBUTE_UNUSED, bfd *input_bfd,
3898 struct bfd_link_info *info)
3900 unsigned int bfd_indx;
3901 Elf_Internal_Sym *local_syms, **all_local_syms;
3902 int stub_changed = 0;
3903 struct elf_metag_link_hash_table *htab = metag_link_hash_table (info);
3905 /* We want to read in symbol extension records only once. To do this
3906 we need to read in the local symbols in parallel and save them for
3907 later use; so hold pointers to the local symbols in an array. */
3908 bfd_size_type amt = sizeof (Elf_Internal_Sym *) * htab->bfd_count;
3909 all_local_syms = bfd_zmalloc (amt);
3910 htab->all_local_syms = all_local_syms;
3911 if (all_local_syms == NULL)
3914 /* Walk over all the input BFDs, swapping in local symbols. */
3917 input_bfd = input_bfd->link.next, bfd_indx++)
3919 Elf_Internal_Shdr *symtab_hdr;
3921 /* We'll need the symbol table in a second. */
3922 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3923 if (symtab_hdr->sh_info == 0)
3926 /* We need an array of the local symbols attached to the input bfd. */
3927 local_syms = (Elf_Internal_Sym *) symtab_hdr->contents;
3928 if (local_syms == NULL)
3930 local_syms = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
3931 symtab_hdr->sh_info, 0,
3933 /* Cache them for elf_link_input_bfd. */
3934 symtab_hdr->contents = (unsigned char *) local_syms;
3936 if (local_syms == NULL)
3939 all_local_syms[bfd_indx] = local_syms;
3942 return stub_changed;
3945 /* Determine and set the size of the stub section for a final link.
3947 The basic idea here is to examine all the relocations looking for
3948 PC-relative calls to a target that is unreachable with a "CALLR"
3951 /* See elf32-hppa.c and elf64-ppc.c. */
3954 elf_metag_size_stubs(bfd *output_bfd, bfd *stub_bfd,
3955 struct bfd_link_info *info,
3956 bfd_signed_vma group_size,
3957 asection * (*add_stub_section) (const char *, asection *),
3958 void (*layout_sections_again) (void))
3960 bfd_size_type stub_group_size;
3961 bfd_boolean stubs_always_before_branch;
3962 bfd_boolean stub_changed;
3963 struct elf_metag_link_hash_table *htab = metag_link_hash_table (info);
3965 /* Stash our params away. */
3966 htab->stub_bfd = stub_bfd;
3967 htab->add_stub_section = add_stub_section;
3968 htab->layout_sections_again = layout_sections_again;
3969 stubs_always_before_branch = group_size < 0;
3971 stub_group_size = -group_size;
3973 stub_group_size = group_size;
3974 if (stub_group_size == 1)
3976 /* Default values. */
3977 /* FIXME: not sure what these values should be */
3978 if (stubs_always_before_branch)
3980 stub_group_size = (1 << BRANCH_BITS);
3984 stub_group_size = (1 << BRANCH_BITS);
3988 group_sections (htab, stub_group_size, stubs_always_before_branch);
3990 switch (get_local_syms (output_bfd, info->input_bfds, info))
3993 if (htab->all_local_syms)
3994 goto error_ret_free_local;
3998 stub_changed = FALSE;
4002 stub_changed = TRUE;
4009 unsigned int bfd_indx;
4012 for (input_bfd = info->input_bfds, bfd_indx = 0;
4014 input_bfd = input_bfd->link.next, bfd_indx++)
4016 Elf_Internal_Shdr *symtab_hdr;
4018 Elf_Internal_Sym *local_syms;
4020 /* We'll need the symbol table in a second. */
4021 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
4022 if (symtab_hdr->sh_info == 0)
4025 local_syms = htab->all_local_syms[bfd_indx];
4027 /* Walk over each section attached to the input bfd. */
4028 for (section = input_bfd->sections;
4030 section = section->next)
4032 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
4034 /* If there aren't any relocs, then there's nothing more
4036 if ((section->flags & SEC_RELOC) == 0
4037 || section->reloc_count == 0)
4040 /* If this section is a link-once section that will be
4041 discarded, then don't create any stubs. */
4042 if (section->output_section == NULL
4043 || section->output_section->owner != output_bfd)
4046 /* Get the relocs. */
4048 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
4050 if (internal_relocs == NULL)
4051 goto error_ret_free_local;
4053 /* Now examine each relocation. */
4054 irela = internal_relocs;
4055 irelaend = irela + section->reloc_count;
4056 for (; irela < irelaend; irela++)
4058 unsigned int r_type, r_indx;
4059 enum elf_metag_stub_type stub_type;
4060 struct elf_metag_stub_hash_entry *hsh;
4063 bfd_vma destination;
4064 struct elf_metag_link_hash_entry *hh;
4066 const asection *id_sec;
4068 r_type = ELF32_R_TYPE (irela->r_info);
4069 r_indx = ELF32_R_SYM (irela->r_info);
4071 if (r_type >= (unsigned int) R_METAG_MAX)
4073 bfd_set_error (bfd_error_bad_value);
4074 error_ret_free_internal:
4075 if (elf_section_data (section)->relocs == NULL)
4076 free (internal_relocs);
4077 goto error_ret_free_local;
4080 /* Only look for stubs on CALLR and B instructions. */
4081 if (!(r_type == (unsigned int) R_METAG_RELBRANCH ||
4082 r_type == (unsigned int) R_METAG_RELBRANCH_PLT))
4085 /* Now determine the call target, its name, value,
4091 if (r_indx < symtab_hdr->sh_info)
4093 /* It's a local symbol. */
4094 Elf_Internal_Sym *sym;
4095 Elf_Internal_Shdr *hdr;
4098 sym = local_syms + r_indx;
4099 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
4100 sym_value = sym->st_value;
4101 shndx = sym->st_shndx;
4102 if (shndx < elf_numsections (input_bfd))
4104 hdr = elf_elfsections (input_bfd)[shndx];
4105 sym_sec = hdr->bfd_section;
4106 destination = (sym_value + irela->r_addend
4107 + sym_sec->output_offset
4108 + sym_sec->output_section->vma);
4113 /* It's an external symbol. */
4116 e_indx = r_indx - symtab_hdr->sh_info;
4117 hh = ((struct elf_metag_link_hash_entry *)
4118 elf_sym_hashes (input_bfd)[e_indx]);
4120 while (hh->eh.root.type == bfd_link_hash_indirect
4121 || hh->eh.root.type == bfd_link_hash_warning)
4122 hh = ((struct elf_metag_link_hash_entry *)
4123 hh->eh.root.u.i.link);
4125 if (hh->eh.root.type == bfd_link_hash_defined
4126 || hh->eh.root.type == bfd_link_hash_defweak)
4128 sym_sec = hh->eh.root.u.def.section;
4129 sym_value = hh->eh.root.u.def.value;
4130 if (hh->eh.plt.offset != (bfd_vma) -1
4131 && hh->eh.dynindx != -1
4132 && r_type == (unsigned int) R_METAG_RELBRANCH_PLT)
4134 sym_sec = htab->splt;
4135 sym_value = hh->eh.plt.offset;
4138 if (sym_sec->output_section != NULL)
4139 destination = (sym_value + irela->r_addend
4140 + sym_sec->output_offset
4141 + sym_sec->output_section->vma);
4145 else if (hh->eh.root.type == bfd_link_hash_undefweak)
4147 if (! bfd_link_pic (info))
4150 else if (hh->eh.root.type == bfd_link_hash_undefined)
4152 if (! (info->unresolved_syms_in_objects == RM_IGNORE
4153 && (ELF_ST_VISIBILITY (hh->eh.other)
4159 bfd_set_error (bfd_error_bad_value);
4160 goto error_ret_free_internal;
4164 /* Determine what (if any) linker stub is needed. */
4165 stub_type = metag_type_of_stub (section, irela, hh,
4167 if (stub_type == metag_stub_none)
4170 /* Support for grouping stub sections. */
4171 id_sec = htab->stub_group[section->id].link_sec;
4173 /* Get the name of this stub. */
4174 stub_name = metag_stub_name (id_sec, sym_sec, hh, irela);
4176 goto error_ret_free_internal;
4178 hsh = metag_stub_hash_lookup (&htab->bstab,
4183 /* The proper stub has already been created. */
4188 hsh = metag_add_stub (stub_name, section, htab);
4192 goto error_ret_free_internal;
4194 hsh->target_value = sym_value;
4195 hsh->target_section = sym_sec;
4196 hsh->stub_type = stub_type;
4198 hsh->addend = irela->r_addend;
4199 stub_changed = TRUE;
4202 /* We're done with the internal relocs, free them. */
4203 if (elf_section_data (section)->relocs == NULL)
4204 free (internal_relocs);
4211 /* OK, we've added some stubs. Find out the new size of the
4213 for (stub_sec = htab->stub_bfd->sections;
4215 stub_sec = stub_sec->next)
4218 bfd_hash_traverse (&htab->bstab, metag_size_one_stub, htab);
4220 /* Ask the linker to do its stuff. */
4221 (*htab->layout_sections_again) ();
4222 stub_changed = FALSE;
4225 free (htab->all_local_syms);
4228 error_ret_free_local:
4229 free (htab->all_local_syms);
4233 /* Build all the stubs associated with the current output file. The
4234 stubs are kept in a hash table attached to the main linker hash
4235 table. This function is called via metagelf_finish in the linker. */
4238 elf_metag_build_stubs (struct bfd_link_info *info)
4241 struct bfd_hash_table *table;
4242 struct elf_metag_link_hash_table *htab;
4244 htab = metag_link_hash_table (info);
4246 for (stub_sec = htab->stub_bfd->sections;
4248 stub_sec = stub_sec->next)
4252 /* Allocate memory to hold the linker stubs. */
4253 size = stub_sec->size;
4254 stub_sec->contents = bfd_zalloc (htab->stub_bfd, size);
4255 if (stub_sec->contents == NULL && size != 0)
4260 /* Build the stubs as directed by the stub hash table. */
4261 table = &htab->bstab;
4262 bfd_hash_traverse (table, metag_build_one_stub, info);
4267 /* Return TRUE if SYM represents a local label symbol. */
4270 elf_metag_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name)
4272 if (name[0] == '$' && name[1] == 'L')
4274 return _bfd_elf_is_local_label_name (abfd, name);
4277 /* Return address for Ith PLT stub in section PLT, for relocation REL
4278 or (bfd_vma) -1 if it should not be included. */
4281 elf_metag_plt_sym_val (bfd_vma i, const asection *plt,
4282 const arelent *rel ATTRIBUTE_UNUSED)
4284 return plt->vma + (i + 1) * PLT_ENTRY_SIZE;
4287 #define ELF_ARCH bfd_arch_metag
4288 #define ELF_TARGET_ID METAG_ELF_DATA
4289 #define ELF_MACHINE_CODE EM_METAG
4290 #define ELF_MINPAGESIZE 0x1000
4291 #define ELF_MAXPAGESIZE 0x4000
4292 #define ELF_COMMONPAGESIZE 0x1000
4294 #define TARGET_LITTLE_SYM metag_elf32_vec
4295 #define TARGET_LITTLE_NAME "elf32-metag"
4297 #define elf_symbol_leading_char '_'
4299 #define elf_info_to_howto_rel NULL
4300 #define elf_info_to_howto metag_info_to_howto_rela
4302 #define bfd_elf32_bfd_is_local_label_name elf_metag_is_local_label_name
4303 #define bfd_elf32_bfd_link_hash_table_create \
4304 elf_metag_link_hash_table_create
4305 #define elf_backend_relocate_section elf_metag_relocate_section
4306 #define elf_backend_gc_mark_hook elf_metag_gc_mark_hook
4307 #define elf_backend_gc_sweep_hook elf_metag_gc_sweep_hook
4308 #define elf_backend_check_relocs elf_metag_check_relocs
4309 #define elf_backend_create_dynamic_sections elf_metag_create_dynamic_sections
4310 #define elf_backend_adjust_dynamic_symbol elf_metag_adjust_dynamic_symbol
4311 #define elf_backend_finish_dynamic_symbol elf_metag_finish_dynamic_symbol
4312 #define elf_backend_finish_dynamic_sections elf_metag_finish_dynamic_sections
4313 #define elf_backend_size_dynamic_sections elf_metag_size_dynamic_sections
4314 #define elf_backend_omit_section_dynsym \
4315 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4316 #define elf_backend_post_process_headers elf_metag_post_process_headers
4317 #define elf_backend_reloc_type_class elf_metag_reloc_type_class
4318 #define elf_backend_copy_indirect_symbol elf_metag_copy_indirect_symbol
4319 #define elf_backend_plt_sym_val elf_metag_plt_sym_val
4321 #define elf_backend_can_gc_sections 1
4322 #define elf_backend_can_refcount 1
4323 #define elf_backend_got_header_size 12
4324 #define elf_backend_rela_normal 1
4325 #define elf_backend_want_got_sym 0
4326 #define elf_backend_want_plt_sym 0
4327 #define elf_backend_plt_readonly 1
4329 #define bfd_elf32_bfd_reloc_type_lookup metag_reloc_type_lookup
4330 #define bfd_elf32_bfd_reloc_name_lookup metag_reloc_name_lookup
4332 #include "elf32-target.h"