1 /* Meta support for 32-bit ELF
2 Copyright (C) 2013 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 0, /* 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;
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 BFD_ASSERT (r_type < (unsigned int) R_METAG_MAX);
900 cache_ptr->howto = & elf_metag_howto_table [r_type];
903 static reloc_howto_type *
904 metag_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
905 bfd_reloc_code_real_type code)
909 for (i = 0; i < sizeof (metag_reloc_map) / sizeof (metag_reloc_map[0]); i++)
910 if (metag_reloc_map [i].bfd_reloc_val == code)
911 return & elf_metag_howto_table [metag_reloc_map[i].metag_reloc_val];
916 static reloc_howto_type *
917 metag_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
922 for (i = 0; i < sizeof (elf_metag_howto_table) / sizeof (elf_metag_howto_table[0]); i++)
923 if (elf_metag_howto_table[i].name != NULL
924 && strcasecmp (elf_metag_howto_table[i].name, r_name) == 0)
925 return &elf_metag_howto_table[i];
930 /* Various hash macros and functions. */
931 #define metag_link_hash_table(p) \
932 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
933 == METAG_ELF_DATA ? ((struct elf_metag_link_hash_table *) ((p)->hash)) : NULL)
935 #define metag_elf_hash_entry(ent) \
936 ((struct elf_metag_link_hash_entry *)(ent))
938 #define metag_stub_hash_entry(ent) \
939 ((struct elf_metag_stub_hash_entry *)(ent))
941 #define metag_stub_hash_lookup(table, string, create, copy) \
942 ((struct elf_metag_stub_hash_entry *) \
943 bfd_hash_lookup ((table), (string), (create), (copy)))
945 #define metag_elf_local_got_tls_type(abfd) \
946 ((char *)(elf_local_got_offsets (abfd) + (elf_tdata (abfd)->symtab_hdr.sh_info)))
948 /* Assorted hash table functions. */
950 /* Initialize an entry in the stub hash table. */
952 static struct bfd_hash_entry *
953 stub_hash_newfunc (struct bfd_hash_entry *entry,
954 struct bfd_hash_table *table,
957 /* Allocate the structure if it has not already been allocated by a
961 entry = bfd_hash_allocate (table,
962 sizeof (struct elf_metag_stub_hash_entry));
967 /* Call the allocation method of the superclass. */
968 entry = bfd_hash_newfunc (entry, table, string);
971 struct elf_metag_stub_hash_entry *hsh;
973 /* Initialize the local fields. */
974 hsh = (struct elf_metag_stub_hash_entry *) entry;
975 hsh->stub_sec = NULL;
976 hsh->stub_offset = 0;
977 hsh->target_value = 0;
978 hsh->target_section = NULL;
979 hsh->stub_type = metag_stub_long_branch;
987 /* Initialize an entry in the link hash table. */
989 static struct bfd_hash_entry *
990 metag_link_hash_newfunc (struct bfd_hash_entry *entry,
991 struct bfd_hash_table *table,
994 /* Allocate the structure if it has not already been allocated by a
998 entry = bfd_hash_allocate (table,
999 sizeof (struct elf_metag_link_hash_entry));
1004 /* Call the allocation method of the superclass. */
1005 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1008 struct elf_metag_link_hash_entry *hh;
1010 /* Initialize the local fields. */
1011 hh = (struct elf_metag_link_hash_entry *) entry;
1012 hh->hsh_cache = NULL;
1013 hh->dyn_relocs = NULL;
1014 hh->tls_type = GOT_UNKNOWN;
1020 /* Create the derived linker hash table. The Meta ELF port uses the derived
1021 hash table to keep information specific to the Meta ELF linker (without
1022 using static variables). */
1024 static struct bfd_link_hash_table *
1025 elf_metag_link_hash_table_create (bfd *abfd)
1027 struct elf_metag_link_hash_table *htab;
1028 bfd_size_type amt = sizeof (*htab);
1030 htab = bfd_malloc (amt);
1034 if (!_bfd_elf_link_hash_table_init (&htab->etab, abfd,
1035 metag_link_hash_newfunc,
1036 sizeof (struct elf_metag_link_hash_entry),
1043 /* Init the stub hash table too. */
1044 if (!bfd_hash_table_init (&htab->bstab, stub_hash_newfunc,
1045 sizeof (struct elf_metag_stub_hash_entry)))
1048 htab->stub_bfd = NULL;
1049 htab->add_stub_section = NULL;
1050 htab->layout_sections_again = NULL;
1051 htab->stub_group = NULL;
1053 htab->sgotplt = NULL;
1054 htab->srelgot = NULL;
1056 htab->srelplt = NULL;
1057 htab->sdynbss = NULL;
1058 htab->srelbss = NULL;
1059 htab->sym_cache.abfd = NULL;
1060 htab->tls_ldm_got.refcount = 0;
1062 return &htab->etab.root;
1065 /* Free the derived linker hash table. */
1068 elf_metag_link_hash_table_free (struct bfd_link_hash_table *btab)
1070 struct elf_metag_link_hash_table *htab
1071 = (struct elf_metag_link_hash_table *) btab;
1073 bfd_hash_table_free (&htab->bstab);
1074 _bfd_generic_link_hash_table_free (btab);
1077 /* Section name for stubs is the associated section name plus this
1079 #define STUB_SUFFIX ".stub"
1081 /* Build a name for an entry in the stub hash table. */
1084 metag_stub_name (const asection *input_section,
1085 const asection *sym_sec,
1086 const struct elf_metag_link_hash_entry *hh,
1087 const Elf_Internal_Rela *rel)
1094 len = 8 + 1 + strlen (hh->eh.root.root.string) + 1 + 8 + 1;
1095 stub_name = bfd_malloc (len);
1096 if (stub_name != NULL)
1098 sprintf (stub_name, "%08x_%s+%x",
1099 input_section->id & 0xffffffff,
1100 hh->eh.root.root.string,
1101 (int) rel->r_addend & 0xffffffff);
1106 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
1107 stub_name = bfd_malloc (len);
1108 if (stub_name != NULL)
1110 sprintf (stub_name, "%08x_%x:%x+%x",
1111 input_section->id & 0xffffffff,
1112 sym_sec->id & 0xffffffff,
1113 (int) ELF32_R_SYM (rel->r_info) & 0xffffffff,
1114 (int) rel->r_addend & 0xffffffff);
1120 /* Look up an entry in the stub hash. Stub entries are cached because
1121 creating the stub name takes a bit of time. */
1123 static struct elf_metag_stub_hash_entry *
1124 metag_get_stub_entry (const asection *input_section,
1125 const asection *sym_sec,
1126 struct elf_metag_link_hash_entry *hh,
1127 const Elf_Internal_Rela *rel,
1128 struct elf_metag_link_hash_table *htab)
1130 struct elf_metag_stub_hash_entry *hsh;
1131 const asection *id_sec;
1133 /* If this input section is part of a group of sections sharing one
1134 stub section, then use the id of the first section in the group.
1135 Stub names need to include a section id, as there may well be
1136 more than one stub used to reach say, printf, and we need to
1137 distinguish between them. */
1138 id_sec = htab->stub_group[input_section->id].link_sec;
1140 if (hh != NULL && hh->hsh_cache != NULL
1141 && hh->hsh_cache->hh == hh
1142 && hh->hsh_cache->id_sec == id_sec)
1144 hsh = hh->hsh_cache;
1150 stub_name = metag_stub_name (id_sec, sym_sec, hh, rel);
1151 if (stub_name == NULL)
1154 hsh = metag_stub_hash_lookup (&htab->bstab,
1155 stub_name, FALSE, FALSE);
1158 hh->hsh_cache = hsh;
1166 /* Add a new stub entry to the stub hash. Not all fields of the new
1167 stub entry are initialised. */
1169 static struct elf_metag_stub_hash_entry *
1170 metag_add_stub (const char *stub_name,
1172 struct elf_metag_link_hash_table *htab)
1176 struct elf_metag_stub_hash_entry *hsh;
1178 link_sec = htab->stub_group[section->id].link_sec;
1179 stub_sec = htab->stub_group[section->id].stub_sec;
1180 if (stub_sec == NULL)
1182 stub_sec = htab->stub_group[link_sec->id].stub_sec;
1183 if (stub_sec == NULL)
1189 namelen = strlen (link_sec->name);
1190 len = namelen + sizeof (STUB_SUFFIX);
1191 s_name = bfd_alloc (htab->stub_bfd, len);
1195 memcpy (s_name, link_sec->name, namelen);
1196 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
1198 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
1199 if (stub_sec == NULL)
1201 htab->stub_group[link_sec->id].stub_sec = stub_sec;
1203 htab->stub_group[section->id].stub_sec = stub_sec;
1206 /* Enter this entry into the linker stub hash table. */
1207 hsh = metag_stub_hash_lookup (&htab->bstab, stub_name,
1211 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
1217 hsh->stub_sec = stub_sec;
1218 hsh->stub_offset = 0;
1219 hsh->id_sec = link_sec;
1223 /* Check a signed integer value can be represented in the given number
1227 within_signed_range (int value, unsigned int bits)
1229 int min_val = -(1 << (bits - 1));
1230 int max_val = (1 << (bits - 1)) - 1;
1231 return (value <= max_val) && (value >= min_val);
1234 /* Perform a relocation as part of a final link. */
1236 static bfd_reloc_status_type
1237 metag_final_link_relocate (reloc_howto_type *howto,
1239 asection *input_section,
1241 Elf_Internal_Rela *rel,
1243 struct elf_metag_link_hash_entry *hh,
1244 struct elf_metag_link_hash_table *htab,
1247 bfd_reloc_status_type r = bfd_reloc_ok;
1248 bfd_byte *hit_data = contents + rel->r_offset;
1249 int opcode, op_shift, op_extended, l1, l2;
1250 bfd_signed_vma srel, addend = rel->r_addend;
1251 struct elf_metag_stub_hash_entry *hsh = NULL;
1254 /* Find out where we are and where we're going. */
1255 location = (rel->r_offset +
1256 input_section->output_offset +
1257 input_section->output_section->vma);
1259 switch (howto->type)
1261 case R_METAG_RELBRANCH:
1262 case R_METAG_RELBRANCH_PLT:
1263 /* Make it a pc relative offset. */
1264 relocation -= location;
1266 case R_METAG_TLS_GD:
1267 case R_METAG_TLS_IE:
1268 relocation -= elf_gp (input_section->output_section->owner);
1274 switch (howto->type)
1276 case R_METAG_RELBRANCH_PLT:
1277 case R_METAG_RELBRANCH:
1278 opcode = bfd_get_32 (input_bfd, hit_data);
1280 srel = (bfd_signed_vma) relocation;
1283 /* If the branch is out of reach, then redirect the
1284 call to the local stub for this function. */
1285 if (srel > ((1 << (BRANCH_BITS + 1)) - 1) ||
1286 (srel < - (1 << (BRANCH_BITS + 1))))
1288 if (sym_sec == NULL)
1291 hsh = metag_get_stub_entry (input_section, sym_sec,
1294 return bfd_reloc_undefined;
1296 /* Munge up the value and addend so that we call the stub
1297 rather than the procedure directly. */
1298 srel = (hsh->stub_offset
1299 + hsh->stub_sec->output_offset
1300 + hsh->stub_sec->output_section->vma);
1306 if (!within_signed_range (srel, BRANCH_BITS))
1308 if (hh && hh->eh.root.type == bfd_link_hash_undefweak)
1311 return bfd_reloc_overflow;
1314 opcode &= ~(0x7ffff << 5);
1315 opcode |= ((srel & 0x7ffff) << 5);
1317 bfd_put_32 (input_bfd, opcode, hit_data);
1319 case R_METAG_GETSETOFF:
1320 case R_METAG_GETSET_GOT:
1321 case R_METAG_GETSET_GOTOFF:
1322 opcode = bfd_get_32 (input_bfd, hit_data);
1324 srel = (bfd_signed_vma) relocation;
1327 /* Is this a standard or extended GET/SET? */
1328 if ((opcode & 0xf0000000) == 0xa0000000)
1330 /* Extended GET/SET. */
1337 /* Standard GET/SET. */
1338 l1 = opcode & 0x01000000;
1339 l2 = opcode & 0x04000000;
1343 /* Calculate the width of the GET/SET and how much we need to
1344 shift the result by. */
1356 /* GET/SET offsets are scaled by the width of the transfer. */
1357 srel = srel >> op_shift;
1359 /* Extended GET/SET has signed 12 bits of offset, standard has
1363 if (!within_signed_range (srel, 12))
1365 if (hh && hh->eh.root.type == bfd_link_hash_undefweak)
1368 return bfd_reloc_overflow;
1370 opcode &= ~(0xfff << 7);
1371 opcode |= ((srel & 0xfff) << 7);
1375 if (!within_signed_range (srel, 5))
1377 if (hh && hh->eh.root.type == bfd_link_hash_undefweak)
1380 return bfd_reloc_overflow;
1382 opcode &= ~(0x3f << 8);
1383 opcode |= ((srel & 0x3f) << 8);
1386 bfd_put_32 (input_bfd, opcode, hit_data);
1388 case R_METAG_TLS_GD:
1389 case R_METAG_TLS_LDM:
1390 opcode = bfd_get_32 (input_bfd, hit_data);
1392 if ((bfd_signed_vma)relocation < 0)
1394 /* sign extend immediate */
1395 if ((opcode & 0xf2000001) == 0x02000000)
1397 /* ADD De.e,Dx.r,#I16 */
1401 return bfd_reloc_overflow;
1404 bfd_put_32 (input_bfd, opcode, hit_data);
1406 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
1407 contents, rel->r_offset,
1408 relocation, rel->r_addend);
1411 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
1412 contents, rel->r_offset,
1413 relocation, rel->r_addend);
1419 /* This is defined because R_METAG_NONE != 0...
1420 See RELOC_AGAINST_DISCARDED_SECTION for details. */
1421 #define METAG_RELOC_AGAINST_DISCARDED_SECTION(info, input_bfd, input_section, \
1422 rel, relend, howto, contents) \
1424 _bfd_clear_contents (howto, input_bfd, input_section, \
1425 contents + rel->r_offset); \
1427 if (info->relocatable \
1428 && (input_section->flags & SEC_DEBUGGING)) \
1430 /* Only remove relocations in debug sections since other \
1431 sections may require relocations. */ \
1432 Elf_Internal_Shdr *rel_hdr; \
1434 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); \
1436 /* Avoid empty output section. */ \
1437 if (rel_hdr->sh_size > rel_hdr->sh_entsize) \
1439 rel_hdr->sh_size -= rel_hdr->sh_entsize; \
1440 rel_hdr = _bfd_elf_single_rel_hdr (input_section); \
1441 rel_hdr->sh_size -= rel_hdr->sh_entsize; \
1443 memmove (rel, rel + 1, (relend - rel) * sizeof (*rel)); \
1445 input_section->reloc_count--; \
1452 rel->r_info = R_METAG_NONE; \
1453 rel->r_addend = 0; \
1457 /* Relocate a META ELF section.
1459 The RELOCATE_SECTION function is called by the new ELF backend linker
1460 to handle the relocations for a section.
1462 The relocs are always passed as Rela structures; if the section
1463 actually uses Rel structures, the r_addend field will always be
1466 This function is responsible for adjusting the section contents as
1467 necessary, and (if using Rela relocs and generating a relocatable
1468 output file) adjusting the reloc addend as necessary.
1470 This function does not have to worry about setting the reloc
1471 address or the reloc symbol index.
1473 LOCAL_SYMS is a pointer to the swapped in local symbols.
1475 LOCAL_SECTIONS is an array giving the section in the input file
1476 corresponding to the st_shndx field of each local symbol.
1478 The global hash table entry for the global symbols can be found
1479 via elf_sym_hashes (input_bfd).
1481 When generating relocatable output, this function must handle
1482 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
1483 going to be the section symbol corresponding to the output
1484 section, which means that the addend must be adjusted
1488 elf_metag_relocate_section (bfd *output_bfd,
1489 struct bfd_link_info *info,
1491 asection *input_section,
1493 Elf_Internal_Rela *relocs,
1494 Elf_Internal_Sym *local_syms,
1495 asection **local_sections)
1497 bfd_vma *local_got_offsets;
1498 Elf_Internal_Shdr *symtab_hdr;
1499 struct elf_link_hash_entry **eh_syms;
1500 struct elf_metag_link_hash_table *htab;
1501 Elf_Internal_Rela *rel;
1502 Elf_Internal_Rela *relend;
1505 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1506 eh_syms = elf_sym_hashes (input_bfd);
1507 relend = relocs + input_section->reloc_count;
1509 htab = metag_link_hash_table (info);
1510 local_got_offsets = elf_local_got_offsets (input_bfd);
1514 for (rel = relocs; rel < relend; rel ++)
1516 reloc_howto_type *howto;
1517 unsigned long r_symndx;
1518 Elf_Internal_Sym *sym;
1520 struct elf_metag_link_hash_entry *hh;
1522 bfd_reloc_status_type r;
1526 r_type = ELF32_R_TYPE (rel->r_info);
1528 if (r_type == R_METAG_GNU_VTINHERIT
1529 || r_type == R_METAG_GNU_VTENTRY
1530 || r_type == R_METAG_NONE)
1533 r_symndx = ELF32_R_SYM (rel->r_info);
1535 howto = elf_metag_howto_table + ELF32_R_TYPE (rel->r_info);
1540 if (r_symndx < symtab_hdr->sh_info)
1542 sym = local_syms + r_symndx;
1543 sec = local_sections [r_symndx];
1544 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1546 name = bfd_elf_string_from_elf_section
1547 (input_bfd, symtab_hdr->sh_link, sym->st_name);
1548 name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
1552 struct elf_link_hash_entry *eh;
1553 bfd_boolean unresolved_reloc, warned;
1555 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1556 r_symndx, symtab_hdr, eh_syms,
1557 eh, sec, relocation,
1558 unresolved_reloc, warned);
1560 name = eh->root.root.string;
1561 hh = (struct elf_metag_link_hash_entry *) eh;
1564 if (sec != NULL && discarded_section (sec))
1565 METAG_RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
1566 rel, relend, howto, contents);
1568 if (info->relocatable)
1573 case R_METAG_ADDR32:
1574 case R_METAG_RELBRANCH:
1575 if ((input_section->flags & SEC_ALLOC) == 0)
1579 && r_symndx != STN_UNDEF
1580 && (input_section->flags & SEC_ALLOC) != 0
1581 && (r_type != R_METAG_RELBRANCH
1582 || !SYMBOL_CALLS_LOCAL (info, &hh->eh)))
1585 && hh->eh.dynindx != -1
1586 && !hh->eh.non_got_ref
1587 && ((hh->eh.def_dynamic
1588 && !hh->eh.def_regular)
1589 || hh->eh.root.type == bfd_link_hash_undefweak
1590 || hh->eh.root.type == bfd_link_hash_undefined)))
1592 Elf_Internal_Rela outrel;
1593 bfd_boolean skip, relocate;
1596 /* When generating a shared object, these relocations
1597 are copied into the output file to be resolved at run
1600 sreloc = elf_section_data (input_section)->sreloc;
1601 BFD_ASSERT (sreloc != NULL);
1606 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
1610 if (outrel.r_offset == (bfd_vma) -1)
1612 else if (outrel.r_offset == (bfd_vma) -2)
1613 skip = TRUE, relocate = TRUE;
1614 outrel.r_offset += (input_section->output_section->vma
1615 + input_section->output_offset);
1619 memset (&outrel, 0, sizeof outrel);
1620 outrel.r_info = ELF32_R_INFO (0, R_METAG_NONE);
1622 else if (r_type == R_METAG_RELBRANCH)
1624 BFD_ASSERT (hh != NULL && hh->eh.dynindx != -1);
1625 outrel.r_info = ELF32_R_INFO (hh->eh.dynindx, r_type);
1626 outrel.r_addend = rel->r_addend;
1630 /* h->dynindx may be -1 if this symbol was marked to
1633 || ((info->symbolic || hh->eh.dynindx == -1)
1634 && hh->eh.def_regular))
1637 outrel.r_info = ELF32_R_INFO (0, R_METAG_RELATIVE);
1638 outrel.r_addend = relocation + rel->r_addend;
1642 BFD_ASSERT (hh->eh.dynindx != -1);
1643 outrel.r_info = ELF32_R_INFO (hh->eh.dynindx, r_type);
1644 outrel.r_addend = rel->r_addend;
1648 loc = sreloc->contents;
1649 loc += sreloc->reloc_count * sizeof(Elf32_External_Rela);
1650 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
1651 ++sreloc->reloc_count;
1653 /* If this reloc is against an external symbol, we do
1654 not want to fiddle with the addend. Otherwise, we
1655 need to include the symbol value so that it becomes
1656 an addend for the dynamic reloc. */
1662 case R_METAG_RELBRANCH_PLT:
1663 /* Relocation is to the entry for this symbol in the
1664 procedure linkage table. */
1669 if (hh->eh.forced_local)
1672 if (hh->eh.plt.offset == (bfd_vma) -1 ||
1675 /* We didn't make a PLT entry for this symbol. This
1676 happens when statically linking PIC code, or when
1677 using -Bsymbolic. */
1681 relocation = (htab->splt->output_section->vma
1682 + htab->splt->output_offset
1683 + hh->eh.plt.offset);
1685 case R_METAG_HI16_GOTPC:
1686 case R_METAG_LO16_GOTPC:
1687 BFD_ASSERT (htab->sgot != NULL);
1689 relocation = (htab->sgot->output_section->vma +
1690 htab->sgot->output_offset);
1691 relocation += GOT_REG_OFFSET;
1692 relocation -= (input_section->output_section->vma
1693 + input_section->output_offset
1696 case R_METAG_HI16_GOTOFF:
1697 case R_METAG_LO16_GOTOFF:
1698 case R_METAG_GETSET_GOTOFF:
1699 BFD_ASSERT (htab->sgot != NULL);
1701 relocation -= (htab->sgot->output_section->vma +
1702 htab->sgot->output_offset);
1703 relocation -= GOT_REG_OFFSET;
1705 case R_METAG_GETSET_GOT:
1708 bfd_boolean do_got = 0;
1710 /* Relocation is to the entry for this symbol in the
1711 global offset table. */
1716 off = hh->eh.got.offset;
1717 dyn = htab->etab.dynamic_sections_created;
1718 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
1721 /* If we aren't going to call finish_dynamic_symbol,
1722 then we need to handle initialisation of the .got
1723 entry and create needed relocs here. Since the
1724 offset must always be a multiple of 4, we use the
1725 least significant bit to record whether we have
1726 initialised it already. */
1731 hh->eh.got.offset |= 1;
1738 /* Local symbol case. */
1739 if (local_got_offsets == NULL)
1742 off = local_got_offsets[r_symndx];
1744 /* The offset must always be a multiple of 4. We use
1745 the least significant bit to record whether we have
1746 already generated the necessary reloc. */
1751 local_got_offsets[r_symndx] |= 1;
1760 /* Output a dynamic relocation for this GOT entry.
1761 In this case it is relative to the base of the
1762 object because the symbol index is zero. */
1763 Elf_Internal_Rela outrel;
1765 asection *s = htab->srelgot;
1767 outrel.r_offset = (off
1768 + htab->sgot->output_offset
1769 + htab->sgot->output_section->vma);
1770 outrel.r_info = ELF32_R_INFO (0, R_METAG_RELATIVE);
1771 outrel.r_addend = relocation;
1773 loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
1774 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1777 bfd_put_32 (output_bfd, relocation,
1778 htab->sgot->contents + off);
1781 if (off >= (bfd_vma) -2)
1784 relocation = off - GOT_REG_OFFSET;
1787 case R_METAG_TLS_GD:
1788 case R_METAG_TLS_IE:
1790 /* XXXMJF There is room here for optimisations. For example
1791 converting from GD->IE, etc. */
1796 if (htab->sgot == NULL)
1803 dyn = htab->etab.dynamic_sections_created;
1805 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, &hh->eh)
1807 || !SYMBOL_REFERENCES_LOCAL (info, &hh->eh)))
1809 indx = hh->eh.dynindx;
1811 off = hh->eh.got.offset;
1812 tls_type = hh->tls_type;
1816 /* Local symbol case. */
1817 if (local_got_offsets == NULL)
1820 off = local_got_offsets[r_symndx];
1821 tls_type = metag_elf_local_got_tls_type (input_bfd) [r_symndx];
1824 if (tls_type == GOT_UNKNOWN)
1831 bfd_boolean need_relocs = FALSE;
1832 Elf_Internal_Rela outrel;
1833 bfd_byte *loc = NULL;
1836 /* The GOT entries have not been initialized yet. Do it
1837 now, and emit any relocations. If both an IE GOT and a
1838 GD GOT are necessary, we emit the GD first. */
1840 if ((info->shared || indx != 0)
1842 || ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT
1843 || hh->eh.root.type != bfd_link_hash_undefweak))
1846 loc = htab->srelgot->contents;
1847 /* FIXME (CAO): Should this be reloc_count++ ? */
1848 loc += htab->srelgot->reloc_count * sizeof (Elf32_External_Rela);
1851 if (tls_type & GOT_TLS_GD)
1855 outrel.r_offset = (cur_off
1856 + htab->sgot->output_section->vma
1857 + htab->sgot->output_offset);
1858 outrel.r_info = ELF32_R_INFO (indx, R_METAG_TLS_DTPMOD);
1859 outrel.r_addend = 0;
1860 bfd_put_32 (output_bfd, 0, htab->sgot->contents + cur_off);
1862 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1863 htab->srelgot->reloc_count++;
1864 loc += sizeof (Elf32_External_Rela);
1867 bfd_put_32 (output_bfd, 0,
1868 htab->sgot->contents + cur_off + 4);
1871 bfd_put_32 (output_bfd, 0,
1872 htab->sgot->contents + cur_off + 4);
1873 outrel.r_info = ELF32_R_INFO (indx,
1874 R_METAG_TLS_DTPOFF);
1875 outrel.r_offset += 4;
1876 bfd_elf32_swap_reloca_out (output_bfd,
1878 htab->srelgot->reloc_count++;
1879 loc += sizeof (Elf32_External_Rela);
1884 /* We don't support changing the TLS model. */
1891 if (tls_type & GOT_TLS_IE)
1895 outrel.r_offset = (cur_off
1896 + htab->sgot->output_section->vma
1897 + htab->sgot->output_offset);
1898 outrel.r_info = ELF32_R_INFO (indx, R_METAG_TLS_TPOFF);
1901 outrel.r_addend = relocation - dtpoff_base (info);
1903 outrel.r_addend = 0;
1905 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1906 htab->srelgot->reloc_count++;
1907 loc += sizeof (Elf32_External_Rela);
1910 bfd_put_32 (output_bfd, tpoff (info, relocation),
1911 htab->sgot->contents + cur_off);
1917 hh->eh.got.offset |= 1;
1919 local_got_offsets[r_symndx] |= 1;
1922 /* Add the base of the GOT to the relocation value. */
1923 relocation = off - GOT_REG_OFFSET;
1928 case R_METAG_TLS_IENONPIC_HI16:
1929 case R_METAG_TLS_IENONPIC_LO16:
1930 case R_METAG_TLS_LE_HI16:
1931 case R_METAG_TLS_LE_LO16:
1934 (*_bfd_error_handler)
1935 (_("%B(%A+0x%lx): R_METAG_TLS_LE/IENONPIC relocation not permitted in shared object"),
1936 input_bfd, input_section,
1937 (long) rel->r_offset, howto->name);
1941 relocation = tpoff (info, relocation);
1943 case R_METAG_TLS_LDO_HI16:
1944 case R_METAG_TLS_LDO_LO16:
1946 relocation = tpoff (info, relocation);
1948 relocation -= dtpoff_base (info);
1950 case R_METAG_TLS_LDM:
1954 if (htab->sgot == NULL)
1956 off = htab->tls_ldm_got.offset;
1961 Elf_Internal_Rela outrel;
1964 outrel.r_offset = (off
1965 + htab->sgot->output_section->vma
1966 + htab->sgot->output_offset);
1968 outrel.r_addend = 0;
1969 outrel.r_info = ELF32_R_INFO (0, R_METAG_TLS_DTPMOD);
1970 loc = htab->srelgot->contents;
1971 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1972 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1973 htab->tls_ldm_got.offset |= 1;
1976 relocation = off - GOT_REG_OFFSET;
1983 r = metag_final_link_relocate (howto, input_bfd, input_section,
1984 contents, rel, relocation, hh, htab,
1987 if (r != bfd_reloc_ok)
1989 const char * msg = (const char *) NULL;
1993 case bfd_reloc_overflow:
1994 r = info->callbacks->reloc_overflow
1995 (info, (hh ? &hh->eh.root : NULL), name, howto->name,
1996 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
1999 case bfd_reloc_undefined:
2000 r = info->callbacks->undefined_symbol
2001 (info, name, input_bfd, input_section, rel->r_offset,
2005 case bfd_reloc_outofrange:
2006 msg = _("internal error: out of range error");
2009 case bfd_reloc_notsupported:
2010 msg = _("internal error: unsupported relocation error");
2013 case bfd_reloc_dangerous:
2014 msg = _("internal error: dangerous relocation");
2018 msg = _("internal error: unknown error");
2023 r = info->callbacks->warning
2024 (info, msg, name, input_bfd, input_section, rel->r_offset);
2034 /* Create the .plt and .got sections, and set up our hash table
2035 short-cuts to various dynamic sections. */
2038 elf_metag_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2040 struct elf_metag_link_hash_table *htab;
2041 struct elf_link_hash_entry *eh;
2042 struct bfd_link_hash_entry *bh;
2043 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2045 /* Don't try to create the .plt and .got twice. */
2046 htab = metag_link_hash_table (info);
2047 if (htab->splt != NULL)
2050 /* Call the generic code to do most of the work. */
2051 if (! _bfd_elf_create_dynamic_sections (abfd, info))
2054 htab->sgot = bfd_get_section_by_name (abfd, ".got");
2058 htab->sgotplt = bfd_make_section_with_flags (abfd, ".got.plt",
2059 (SEC_ALLOC | SEC_LOAD |
2062 SEC_LINKER_CREATED));
2063 if (htab->sgotplt == NULL
2064 || !bfd_set_section_alignment (abfd, htab->sgotplt, 2))
2067 /* Define the symbol __GLOBAL_OFFSET_TABLE__ at the start of the .got
2068 section. We don't do this in the linker script because we don't want
2069 to define the symbol if we are not creating a global offset table. */
2071 if (!(_bfd_generic_link_add_one_symbol
2072 (info, abfd, "__GLOBAL_OFFSET_TABLE__", BSF_GLOBAL, htab->sgot,
2073 (bfd_vma) 0, NULL, FALSE, bed->collect, &bh)))
2075 eh = (struct elf_link_hash_entry *) bh;
2076 eh->def_regular = 1;
2077 eh->type = STT_OBJECT;
2078 eh->other = STV_HIDDEN;
2080 if (! info->executable
2081 && ! bfd_elf_link_record_dynamic_symbol (info, eh))
2084 elf_hash_table (info)->hgot = eh;
2086 htab->splt = bfd_get_section_by_name (abfd, ".plt");
2087 htab->srelplt = bfd_get_section_by_name (abfd, ".rela.plt");
2089 htab->srelgot = bfd_get_section_by_name (abfd, ".rela.got");
2091 htab->sdynbss = bfd_get_section_by_name (abfd, ".dynbss");
2092 htab->srelbss = bfd_get_section_by_name (abfd, ".rela.bss");
2097 /* Look through the relocs for a section during the first phase, and
2098 calculate needed space in the global offset table, procedure linkage
2099 table, and dynamic reloc sections. At this point we haven't
2100 necessarily read all the input files. */
2103 elf_metag_check_relocs (bfd *abfd,
2104 struct bfd_link_info *info,
2106 const Elf_Internal_Rela *relocs)
2108 Elf_Internal_Shdr *symtab_hdr;
2109 struct elf_link_hash_entry **eh_syms;
2110 const Elf_Internal_Rela *rel;
2111 const Elf_Internal_Rela *rel_end;
2112 struct elf_metag_link_hash_table *htab;
2115 int tls_type = GOT_UNKNOWN, old_tls_type = GOT_UNKNOWN;
2117 if (info->relocatable)
2120 htab = metag_link_hash_table (info);
2121 dynobj = htab->etab.dynobj;
2122 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2123 eh_syms = elf_sym_hashes (abfd);
2129 rel_end = relocs + sec->reloc_count;
2130 for (rel = relocs; rel < rel_end; rel++)
2133 struct elf_metag_link_hash_entry *hh;
2134 unsigned long r_symndx;
2136 r_symndx = ELF32_R_SYM (rel->r_info);
2137 r_type = ELF32_R_TYPE (rel->r_info);
2138 if (r_symndx < symtab_hdr->sh_info)
2142 hh = (struct elf_metag_link_hash_entry *)
2143 eh_syms[r_symndx - symtab_hdr->sh_info];
2144 while (hh->eh.root.type == bfd_link_hash_indirect
2145 || hh->eh.root.type == bfd_link_hash_warning)
2146 hh = (struct elf_metag_link_hash_entry *) hh->eh.root.u.i.link;
2149 /* Some relocs require a global offset table. */
2150 if (htab->sgot == NULL)
2154 case R_METAG_TLS_GD:
2155 case R_METAG_TLS_LDM:
2156 case R_METAG_TLS_IE:
2158 info->flags |= DF_STATIC_TLS;
2161 case R_METAG_HI16_GOTOFF:
2162 case R_METAG_LO16_GOTOFF:
2163 case R_METAG_GETSET_GOTOFF:
2164 case R_METAG_GETSET_GOT:
2165 case R_METAG_HI16_GOTPC:
2166 case R_METAG_LO16_GOTPC:
2168 htab->etab.dynobj = dynobj = abfd;
2169 if (!elf_metag_create_dynamic_sections (dynobj, info))
2180 case R_METAG_TLS_IE:
2181 case R_METAG_TLS_GD:
2182 case R_METAG_GETSET_GOT:
2186 tls_type = GOT_NORMAL;
2188 case R_METAG_TLS_IE:
2189 tls_type = GOT_TLS_IE;
2191 case R_METAG_TLS_GD:
2192 tls_type = GOT_TLS_GD;
2198 hh->eh.got.refcount += 1;
2199 old_tls_type = hh->tls_type;
2203 bfd_signed_vma *local_got_refcounts;
2205 /* This is a global offset table entry for a local
2207 local_got_refcounts = elf_local_got_refcounts (abfd);
2208 if (local_got_refcounts == NULL)
2212 size = symtab_hdr->sh_info;
2213 size *= sizeof (bfd_signed_vma);
2214 /* Add in space to store the local GOT TLS types. */
2215 size += symtab_hdr->sh_info;
2216 local_got_refcounts = ((bfd_signed_vma *)
2217 bfd_zalloc (abfd, size));
2218 if (local_got_refcounts == NULL)
2220 elf_local_got_refcounts (abfd) = local_got_refcounts;
2221 memset (metag_elf_local_got_tls_type (abfd),
2222 GOT_UNKNOWN, symtab_hdr->sh_info);
2224 local_got_refcounts[r_symndx] += 1;
2225 old_tls_type = metag_elf_local_got_tls_type (abfd) [r_symndx];
2228 if (old_tls_type != tls_type)
2232 hh->tls_type = tls_type;
2236 metag_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
2242 case R_METAG_TLS_LDM:
2243 metag_link_hash_table (info)->tls_ldm_got.refcount += 1;
2246 case R_METAG_RELBRANCH_PLT:
2247 /* This symbol requires a procedure linkage table entry. We
2248 actually build the entry in adjust_dynamic_symbol,
2249 because this might be a case of linking PIC code without
2250 linking in any dynamic objects, in which case we don't
2251 need to generate a procedure linkage table after all. */
2253 /* If this is a local symbol, we resolve it directly without
2254 creating a procedure linkage table entry. */
2258 if (hh->eh.forced_local)
2261 hh->eh.needs_plt = 1;
2262 hh->eh.plt.refcount += 1;
2265 case R_METAG_ADDR32:
2266 case R_METAG_HIADDR16:
2267 case R_METAG_LOADDR16:
2268 case R_METAG_RELBRANCH:
2269 case R_METAG_GETSETOFF:
2270 if (hh != NULL && !info->shared)
2272 hh->eh.non_got_ref = 1;
2273 hh->eh.plt.refcount += 1;
2276 /* If we are creating a shared library, and this is a reloc
2277 against a global symbol, or a non PC relative reloc
2278 against a local symbol, then we need to copy the reloc
2279 into the shared library. However, if we are linking with
2280 -Bsymbolic, we do not need to copy a reloc against a
2281 global symbol which is defined in an object we are
2282 including in the link (i.e., DEF_REGULAR is set). At
2283 this point we have not seen all the input files, so it is
2284 possible that DEF_REGULAR is not set now but will be set
2285 later (it is never cleared). We account for that
2286 possibility below by storing information in the
2287 dyn_relocs field of the hash table entry. A similar
2288 situation occurs when creating shared libraries and symbol
2289 visibility changes render the symbol local.
2291 If on the other hand, we are creating an executable, we
2292 may need to keep relocations for symbols satisfied by a
2293 dynamic library if we manage to avoid copy relocs for the
2296 && (sec->flags & SEC_ALLOC) != 0
2297 && (r_type != R_METAG_RELBRANCH
2299 && (! info->symbolic
2300 || hh->eh.root.type == bfd_link_hash_defweak
2301 || !hh->eh.def_regular))))
2303 && (sec->flags & SEC_ALLOC) != 0
2305 && (hh->eh.root.type == bfd_link_hash_defweak
2306 || !hh->eh.def_regular)))
2308 struct elf_metag_dyn_reloc_entry *hdh_p;
2309 struct elf_metag_dyn_reloc_entry **hdh_head;
2312 htab->etab.dynobj = dynobj = abfd;
2314 /* When creating a shared object, we must copy these
2315 relocs into the output file. We create a reloc
2316 section in dynobj and make room for the reloc. */
2319 sreloc = _bfd_elf_make_dynamic_reloc_section
2320 (sec, htab->etab.dynobj, 2, abfd, /*rela?*/ TRUE);
2324 bfd_set_error (bfd_error_bad_value);
2328 elf_section_data (sec)->sreloc = sreloc;
2331 /* If this is a global symbol, we count the number of
2332 relocations we need for this symbol. */
2334 hdh_head = &((struct elf_metag_link_hash_entry *) hh)->dyn_relocs;
2337 /* Track dynamic relocs needed for local syms too. */
2340 Elf_Internal_Sym *isym;
2342 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2347 sr = bfd_section_from_elf_index (abfd, isym->st_shndx);
2351 vpp = &elf_section_data (sr)->local_dynrel;
2352 hdh_head = (struct elf_metag_dyn_reloc_entry **) vpp;
2356 if (hdh_p == NULL || hdh_p->sec != sec)
2358 hdh_p = ((struct elf_metag_dyn_reloc_entry *)
2359 bfd_alloc (dynobj, sizeof *hdh_p));
2362 hdh_p->hdh_next = *hdh_head;
2366 hdh_p->relative_count = 0;
2370 if (ELF32_R_TYPE (rel->r_info) == R_METAG_RELBRANCH)
2371 hdh_p->relative_count += 1;
2375 /* This relocation describes the C++ object vtable hierarchy.
2376 Reconstruct it for later use during GC. */
2377 case R_METAG_GNU_VTINHERIT:
2378 if (!bfd_elf_gc_record_vtinherit (abfd, sec, &hh->eh,
2383 /* This relocation describes which C++ vtable entries are actually
2384 used. Record for later use during GC. */
2385 case R_METAG_GNU_VTENTRY:
2386 BFD_ASSERT (hh != NULL);
2388 && !bfd_elf_gc_record_vtentry (abfd, sec, &hh->eh, rel->r_addend))
2397 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2400 elf_metag_copy_indirect_symbol (struct bfd_link_info *info,
2401 struct elf_link_hash_entry *eh_dir,
2402 struct elf_link_hash_entry *eh_ind)
2404 struct elf_metag_link_hash_entry *hh_dir, *hh_ind;
2406 hh_dir = metag_elf_hash_entry (eh_dir);
2407 hh_ind = metag_elf_hash_entry (eh_ind);
2409 if (hh_ind->dyn_relocs != NULL)
2411 if (hh_dir->dyn_relocs != NULL)
2413 struct elf_metag_dyn_reloc_entry **hdh_pp;
2414 struct elf_metag_dyn_reloc_entry *hdh_p;
2416 if (eh_ind->root.type == bfd_link_hash_indirect)
2419 /* Add reloc counts against the weak sym to the strong sym
2420 list. Merge any entries against the same section. */
2421 for (hdh_pp = &hh_ind->dyn_relocs; (hdh_p = *hdh_pp) != NULL; )
2423 struct elf_metag_dyn_reloc_entry *hdh_q;
2425 for (hdh_q = hh_dir->dyn_relocs; hdh_q != NULL;
2426 hdh_q = hdh_q->hdh_next)
2427 if (hdh_q->sec == hdh_p->sec)
2429 hdh_q->relative_count += hdh_p->relative_count;
2430 hdh_q->count += hdh_p->count;
2431 *hdh_pp = hdh_p->hdh_next;
2435 hdh_pp = &hdh_p->hdh_next;
2437 *hdh_pp = hh_dir->dyn_relocs;
2440 hh_dir->dyn_relocs = hh_ind->dyn_relocs;
2441 hh_ind->dyn_relocs = NULL;
2444 if (eh_ind->root.type == bfd_link_hash_indirect
2445 && eh_dir->got.refcount <= 0)
2447 hh_dir->tls_type = hh_ind->tls_type;
2448 hh_ind->tls_type = GOT_UNKNOWN;
2451 _bfd_elf_link_hash_copy_indirect (info, eh_dir, eh_ind);
2454 /* Adjust a symbol defined by a dynamic object and referenced by a
2455 regular object. The current definition is in some section of the
2456 dynamic object, but we're not including those sections. We have to
2457 change the definition to something the rest of the link can
2461 elf_metag_adjust_dynamic_symbol (struct bfd_link_info *info,
2462 struct elf_link_hash_entry *eh)
2464 struct elf_metag_link_hash_table *htab;
2465 struct elf_metag_link_hash_entry *hh;
2466 struct elf_metag_dyn_reloc_entry *hdh_p;
2469 /* If this is a function, put it in the procedure linkage table. We
2470 will fill in the contents of the procedure linkage table later,
2471 when we know the address of the .got section. */
2472 if (eh->type == STT_FUNC
2475 if (eh->plt.refcount <= 0
2476 || SYMBOL_CALLS_LOCAL (info, eh)
2477 || (ELF_ST_VISIBILITY (eh->other) != STV_DEFAULT
2478 && eh->root.type == bfd_link_hash_undefweak))
2480 /* This case can occur if we saw a PLT reloc in an input
2481 file, but the symbol was never referred to by a dynamic
2482 object. In such a case, we don't actually need to build
2483 a procedure linkage table, and we can just do a PCREL
2485 eh->plt.offset = (bfd_vma) -1;
2492 eh->plt.offset = (bfd_vma) -1;
2494 /* If this is a weak symbol, and there is a real definition, the
2495 processor independent code will have arranged for us to see the
2496 real definition first, and we can just use the same value. */
2497 if (eh->u.weakdef != NULL)
2499 if (eh->u.weakdef->root.type != bfd_link_hash_defined
2500 && eh->u.weakdef->root.type != bfd_link_hash_defweak)
2502 eh->root.u.def.section = eh->u.weakdef->root.u.def.section;
2503 eh->root.u.def.value = eh->u.weakdef->root.u.def.value;
2504 eh->non_got_ref = eh->u.weakdef->non_got_ref;
2508 /* This is a reference to a symbol defined by a dynamic object which
2509 is not a function. */
2511 /* If we are creating a shared library, we must presume that the
2512 only references to the symbol are via the global offset table.
2513 For such cases we need not do anything here; the relocations will
2514 be handled correctly by relocate_section. */
2518 /* If there are no references to this symbol that do not use the
2519 GOT, we don't need to generate a copy reloc. */
2520 if (!eh->non_got_ref)
2523 /* If -z nocopyreloc was given, we won't generate them either. */
2524 if (info->nocopyreloc)
2526 eh->non_got_ref = 0;
2530 hh = (struct elf_metag_link_hash_entry *) eh;
2531 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
2533 s = hdh_p->sec->output_section;
2534 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2538 /* If we didn't find any dynamic relocs in read-only sections, then
2539 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2542 eh->non_got_ref = 0;
2548 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
2549 hh->eh.root.root.string);
2553 /* We must allocate the symbol in our .dynbss section, which will
2554 become part of the .bss section of the executable. There will be
2555 an entry for this symbol in the .dynsym section. The dynamic
2556 object will contain position independent code, so all references
2557 from the dynamic object to this symbol will go through the global
2558 offset table. The dynamic linker will use the .dynsym entry to
2559 determine the address it must put in the global offset table, so
2560 both the dynamic object and the regular object will refer to the
2561 same memory location for the variable. */
2563 htab = metag_link_hash_table (info);
2565 /* We must generate a COPY reloc to tell the dynamic linker to
2566 copy the initial value out of the dynamic object and into the
2567 runtime process image. */
2568 if ((eh->root.u.def.section->flags & SEC_ALLOC) != 0)
2570 htab->srelbss->size += sizeof (Elf32_External_Rela);
2576 return _bfd_elf_adjust_dynamic_copy (eh, s);
2579 /* Allocate space in .plt, .got and associated reloc sections for
2583 allocate_dynrelocs (struct elf_link_hash_entry *eh, void *inf)
2585 struct bfd_link_info *info;
2586 struct elf_metag_link_hash_table *htab;
2587 struct elf_metag_link_hash_entry *hh;
2588 struct elf_metag_dyn_reloc_entry *hdh_p;
2590 if (eh->root.type == bfd_link_hash_indirect)
2593 if (eh->root.type == bfd_link_hash_warning)
2594 eh = (struct elf_link_hash_entry *) eh->root.u.i.link;
2597 htab = metag_link_hash_table (info);
2599 if (htab->etab.dynamic_sections_created
2600 && eh->plt.refcount > 0)
2602 /* Make sure this symbol is output as a dynamic symbol.
2603 Undefined weak syms won't yet be marked as dynamic. */
2604 if (eh->dynindx == -1
2605 && !eh->forced_local)
2607 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2611 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, eh))
2613 asection *s = htab->splt;
2615 /* If this is the first .plt entry, make room for the special
2618 s->size += PLT_ENTRY_SIZE;
2620 eh->plt.offset = s->size;
2622 /* If this symbol is not defined in a regular file, and we are
2623 not generating a shared library, then set the symbol to this
2624 location in the .plt. This is required to make function
2625 pointers compare as equal between the normal executable and
2626 the shared library. */
2628 && !eh->def_regular)
2630 eh->root.u.def.section = s;
2631 eh->root.u.def.value = eh->plt.offset;
2634 /* Make room for this entry. */
2635 s->size += PLT_ENTRY_SIZE;
2637 /* We also need to make an entry in the .got.plt section, which
2638 will be placed in the .got section by the linker script. */
2639 htab->sgotplt->size += 4;
2641 /* We also need to make an entry in the .rel.plt section. */
2642 htab->srelplt->size += sizeof (Elf32_External_Rela);
2646 eh->plt.offset = (bfd_vma) -1;
2652 eh->plt.offset = (bfd_vma) -1;
2656 if (eh->got.refcount > 0)
2660 int tls_type = metag_elf_hash_entry (eh)->tls_type;
2662 /* Make sure this symbol is output as a dynamic symbol.
2663 Undefined weak syms won't yet be marked as dynamic. */
2664 if (eh->dynindx == -1
2665 && !eh->forced_local)
2667 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2673 eh->got.offset = s->size;
2675 /* R_METAG_TLS_GD needs 2 consecutive GOT slots. */
2676 if (tls_type == GOT_TLS_GD)
2678 dyn = htab->etab.dynamic_sections_created;
2679 /* R_METAG_TLS_IE needs one dynamic relocation if dynamic,
2680 R_METAG_TLS_GD needs one if local symbol and two if global. */
2681 if ((tls_type == GOT_TLS_GD && eh->dynindx == -1)
2682 || (tls_type == GOT_TLS_IE && dyn))
2683 htab->srelgot->size += sizeof (Elf32_External_Rela);
2684 else if (tls_type == GOT_TLS_GD)
2685 htab->srelgot->size += 2 * sizeof (Elf32_External_Rela);
2686 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, eh))
2687 htab->srelgot->size += sizeof (Elf32_External_Rela);
2690 eh->got.offset = (bfd_vma) -1;
2692 hh = (struct elf_metag_link_hash_entry *) eh;
2693 if (hh->dyn_relocs == NULL)
2696 /* If this is a -Bsymbolic shared link, then we need to discard all
2697 space allocated for dynamic pc-relative relocs against symbols
2698 defined in a regular object. For the normal shared case, discard
2699 space for relocs that have become local due to symbol visibility
2703 if (SYMBOL_CALLS_LOCAL (info, eh))
2705 struct elf_metag_dyn_reloc_entry **hdh_pp;
2707 for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL; )
2709 hdh_p->count -= hdh_p->relative_count;
2710 hdh_p->relative_count = 0;
2711 if (hdh_p->count == 0)
2712 *hdh_pp = hdh_p->hdh_next;
2714 hdh_pp = &hdh_p->hdh_next;
2718 /* Also discard relocs on undefined weak syms with non-default
2720 if (hh->dyn_relocs != NULL
2721 && eh->root.type == bfd_link_hash_undefweak)
2723 if (ELF_ST_VISIBILITY (eh->other) != STV_DEFAULT)
2724 hh->dyn_relocs = NULL;
2726 /* Make sure undefined weak symbols are output as a dynamic
2728 else if (eh->dynindx == -1
2729 && !eh->forced_local)
2731 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2738 /* For the non-shared case, discard space for relocs against
2739 symbols which turn out to need copy relocs or are not
2741 if (!eh->non_got_ref
2742 && ((eh->def_dynamic
2743 && !eh->def_regular)
2744 || (htab->etab.dynamic_sections_created
2745 && (eh->root.type == bfd_link_hash_undefweak
2746 || eh->root.type == bfd_link_hash_undefined))))
2748 /* Make sure this symbol is output as a dynamic symbol.
2749 Undefined weak syms won't yet be marked as dynamic. */
2750 if (eh->dynindx == -1
2751 && !eh->forced_local)
2753 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2757 /* If that succeeded, we know we'll be keeping all the
2759 if (eh->dynindx != -1)
2763 hh->dyn_relocs = NULL;
2769 /* Finally, allocate space. */
2770 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
2772 asection *sreloc = elf_section_data (hdh_p->sec)->sreloc;
2773 sreloc->size += hdh_p->count * sizeof (Elf32_External_Rela);
2779 /* Find any dynamic relocs that apply to read-only sections. */
2782 readonly_dynrelocs (struct elf_link_hash_entry *eh, void *inf)
2784 struct elf_metag_link_hash_entry *hh;
2785 struct elf_metag_dyn_reloc_entry *hdh_p;
2787 if (eh->root.type == bfd_link_hash_warning)
2788 eh = (struct elf_link_hash_entry *) eh->root.u.i.link;
2790 hh = (struct elf_metag_link_hash_entry *) eh;
2791 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
2793 asection *s = hdh_p->sec->output_section;
2795 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2797 struct bfd_link_info *info = inf;
2799 info->flags |= DF_TEXTREL;
2801 /* Not an error, just cut short the traversal. */
2808 /* Set the sizes of the dynamic sections. */
2811 elf_metag_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2812 struct bfd_link_info *info)
2814 struct elf_metag_link_hash_table *htab;
2820 htab = metag_link_hash_table (info);
2821 dynobj = htab->etab.dynobj;
2825 if (htab->etab.dynamic_sections_created)
2827 /* Set the contents of the .interp section to the interpreter. */
2828 if (info->executable)
2830 s = bfd_get_section_by_name (dynobj, ".interp");
2833 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2834 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2838 /* Set up .got offsets for local syms, and space for local dynamic
2840 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2842 bfd_signed_vma *local_got;
2843 bfd_signed_vma *end_local_got;
2844 bfd_size_type locsymcount;
2845 Elf_Internal_Shdr *symtab_hdr;
2847 char *local_tls_type;
2849 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2852 for (s = ibfd->sections; s != NULL; s = s->next)
2854 struct elf_metag_dyn_reloc_entry *hdh_p;
2856 for (hdh_p = ((struct elf_metag_dyn_reloc_entry *)
2857 elf_section_data (s)->local_dynrel);
2859 hdh_p = hdh_p->hdh_next)
2861 if (!bfd_is_abs_section (hdh_p->sec)
2862 && bfd_is_abs_section (hdh_p->sec->output_section))
2864 /* Input section has been discarded, either because
2865 it is a copy of a linkonce section or due to
2866 linker script /DISCARD/, so we'll be discarding
2869 else if (hdh_p->count != 0)
2871 srel = elf_section_data (hdh_p->sec)->sreloc;
2872 srel->size += hdh_p->count * sizeof (Elf32_External_Rela);
2873 if ((hdh_p->sec->output_section->flags & SEC_READONLY) != 0)
2874 info->flags |= DF_TEXTREL;
2879 local_got = elf_local_got_refcounts (ibfd);
2883 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2884 locsymcount = symtab_hdr->sh_info;
2885 end_local_got = local_got + locsymcount;
2886 local_tls_type = metag_elf_local_got_tls_type (ibfd);
2888 srel = htab->srelgot;
2889 for (; local_got < end_local_got; ++local_got)
2893 *local_got = s->size;
2894 s->size += GOT_ENTRY_SIZE;
2895 /* R_METAG_TLS_GD relocs need 2 consecutive GOT entries. */
2896 if (*local_tls_type == GOT_TLS_GD)
2899 srel->size += sizeof (Elf32_External_Rela);
2902 *local_got = (bfd_vma) -1;
2907 if (htab->tls_ldm_got.refcount > 0)
2909 /* Allocate 2 got entries and 1 dynamic reloc for R_METAG_TLS_LDM
2911 htab->tls_ldm_got.offset = htab->sgot->size;
2912 htab->sgot->size += 8;
2913 htab->srelgot->size += sizeof (Elf32_External_Rela);
2916 htab->tls_ldm_got.offset = -1;
2918 /* Allocate global sym .plt and .got entries, and space for global
2919 sym dynamic relocs. */
2920 elf_link_hash_traverse (&htab->etab, allocate_dynrelocs, info);
2922 /* We now have determined the sizes of the various dynamic sections.
2923 Allocate memory for them. */
2925 for (s = dynobj->sections; s != NULL; s = s->next)
2927 bfd_boolean reloc_section = FALSE;
2929 if ((s->flags & SEC_LINKER_CREATED) == 0)
2934 || s == htab->sgotplt
2935 || s == htab->sdynbss)
2937 /* Strip this section if we don't need it; see the
2940 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2942 if (s->size != 0 && s != htab->srelplt)
2945 /* We use the reloc_count field as a counter if we need
2946 to copy relocs into the output file. */
2948 reloc_section = TRUE;
2952 /* It's not one of our sections, so don't allocate space. */
2958 /* If we don't need this section, strip it from the
2959 output file. This is mostly to handle .rela.bss and
2960 .rela.plt. We must create both sections in
2961 create_dynamic_sections, because they must be created
2962 before the linker maps input sections to output
2963 sections. The linker does that before
2964 adjust_dynamic_symbol is called, and it is that
2965 function which decides whether anything needs to go
2966 into these sections. */
2967 s->flags |= SEC_EXCLUDE;
2971 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2974 /* Allocate memory for the section contents. */
2975 s->contents = bfd_zalloc (dynobj, s->size);
2976 if (s->contents == NULL)
2978 else if (reloc_section)
2980 unsigned char *contents = s->contents;
2981 Elf32_External_Rela reloc;
2983 /* Fill the reloc section with a R_METAG_NONE type reloc. */
2984 memset(&reloc, 0, sizeof(Elf32_External_Rela));
2985 reloc.r_info[0] = R_METAG_NONE;
2986 for (; contents < (s->contents + s->size);
2987 contents += sizeof(Elf32_External_Rela))
2989 memcpy(contents, &reloc, sizeof(Elf32_External_Rela));
2994 if (htab->etab.dynamic_sections_created)
2996 /* Add some entries to the .dynamic section. We fill in the
2997 values later, in elf_metag_finish_dynamic_sections, but we
2998 must add the entries now so that we get the correct size for
2999 the .dynamic section. The DT_DEBUG entry is filled in by the
3000 dynamic linker and used by the debugger. */
3001 #define add_dynamic_entry(TAG, VAL) \
3002 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3004 if (!add_dynamic_entry (DT_PLTGOT, 0))
3007 if (info->executable)
3009 if (!add_dynamic_entry (DT_DEBUG, 0))
3013 if (htab->srelplt->size != 0)
3015 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3016 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3017 || !add_dynamic_entry (DT_JMPREL, 0))
3023 if (!add_dynamic_entry (DT_RELA, 0)
3024 || !add_dynamic_entry (DT_RELASZ, 0)
3025 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3028 /* If any dynamic relocs apply to a read-only section,
3029 then we need a DT_TEXTREL entry. */
3030 if ((info->flags & DF_TEXTREL) == 0)
3031 elf_link_hash_traverse (&htab->etab, readonly_dynrelocs, info);
3033 if ((info->flags & DF_TEXTREL) != 0)
3035 if (!add_dynamic_entry (DT_TEXTREL, 0))
3040 #undef add_dynamic_entry
3045 /* Finish up dynamic symbol handling. We set the contents of various
3046 dynamic sections here. */
3049 elf_metag_finish_dynamic_symbol (bfd *output_bfd,
3050 struct bfd_link_info *info,
3051 struct elf_link_hash_entry *eh,
3052 Elf_Internal_Sym *sym)
3054 struct elf_metag_link_hash_table *htab;
3055 Elf_Internal_Rela rel;
3058 htab = metag_link_hash_table (info);
3060 if (eh->plt.offset != (bfd_vma) -1)
3070 if (eh->plt.offset & 1)
3073 BFD_ASSERT (eh->dynindx != -1);
3076 sgot = htab->sgotplt;
3077 srela = htab->srelplt;
3078 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
3080 /* Get the index in the procedure linkage table which
3081 corresponds to this symbol. This is the index of this symbol
3082 in all the symbols for which we are making plt entries. The
3083 first entry in the procedure linkage table is reserved. */
3084 plt_index = eh->plt.offset / PLT_ENTRY_SIZE - 1;
3086 /* Get the offset into the .got.plt table of the entry that
3087 corresponds to this function. */
3088 got_offset = plt_index * GOT_ENTRY_SIZE;
3090 BFD_ASSERT (got_offset < (1 << 16));
3092 got_entry = sgot->output_section->vma
3093 + sgot->output_offset
3096 BFD_ASSERT (plt_index < (1 << 16));
3098 /* Fill in the entry in the procedure linkage table. */
3101 bfd_put_32 (output_bfd,
3103 | (((got_entry >> 16) & 0xffff) << 3)),
3104 splt->contents + eh->plt.offset);
3105 bfd_put_32 (output_bfd,
3107 | ((got_entry & 0xffff) << 3)),
3108 splt->contents + eh->plt.offset + 4);
3109 bfd_put_32 (output_bfd, plt_entry[2],
3110 splt->contents + eh->plt.offset + 8);
3111 bfd_put_32 (output_bfd,
3112 (plt_entry[3] | (plt_index << 3)),
3113 splt->contents + eh->plt.offset + 12);
3114 bfd_put_32 (output_bfd,
3116 | ((((unsigned int) ((- (eh->plt.offset + 16)) >> 2)) & 0x7ffff) << 5)),
3117 splt->contents + eh->plt.offset + 16);
3121 bfd_vma addr = got_entry - (splt->output_section->vma +
3122 splt->output_offset + eh->plt.offset);
3124 bfd_put_32 (output_bfd,
3125 plt_pic_entry[0] | (((addr >> 16) & 0xffff) << 3),
3126 splt->contents + eh->plt.offset);
3127 bfd_put_32 (output_bfd,
3128 plt_pic_entry[1] | ((addr & 0xffff) << 3),
3129 splt->contents + eh->plt.offset + 4);
3130 bfd_put_32 (output_bfd, plt_pic_entry[2],
3131 splt->contents + eh->plt.offset + 8);
3132 bfd_put_32 (output_bfd,
3133 (plt_pic_entry[3] | (plt_index << 3)),
3134 splt->contents + eh->plt.offset + 12);
3135 bfd_put_32 (output_bfd,
3137 + ((((unsigned int) ((- (eh->plt.offset + 16)) >> 2)) & 0x7ffff) << 5)),
3138 splt->contents + eh->plt.offset + 16);
3141 /* Fill in the entry in the global offset table. */
3142 bfd_put_32 (output_bfd,
3143 (splt->output_section->vma
3144 + splt->output_offset
3146 + 12), /* offset within PLT entry */
3147 sgot->contents + got_offset);
3149 /* Fill in the entry in the .rela.plt section. */
3150 rel.r_offset = (sgot->output_section->vma
3151 + sgot->output_offset
3153 rel.r_info = ELF32_R_INFO (eh->dynindx, R_METAG_JMP_SLOT);
3155 loc = htab->srelplt->contents;
3156 loc += plt_index * sizeof(Elf32_External_Rela);
3157 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
3159 if (!eh->def_regular)
3161 /* Mark the symbol as undefined, rather than as defined in
3162 the .plt section. Leave the value alone. */
3163 sym->st_shndx = SHN_UNDEF;
3167 if (eh->got.offset != (bfd_vma) -1
3168 && (metag_elf_hash_entry (eh)->tls_type & GOT_TLS_GD) == 0
3169 && (metag_elf_hash_entry (eh)->tls_type & GOT_TLS_IE) == 0)
3171 /* This symbol has an entry in the global offset table. Set it
3174 rel.r_offset = ((eh->got.offset &~ (bfd_vma) 1)
3175 + htab->sgot->output_offset
3176 + htab->sgot->output_section->vma);
3178 /* If this is a -Bsymbolic link and the symbol is defined
3179 locally or was forced to be local because of a version file,
3180 we just want to emit a RELATIVE reloc. The entry in the
3181 global offset table will already have been initialized in the
3182 relocate_section function. */
3184 && (info->symbolic || eh->dynindx == -1)
3187 rel.r_info = ELF32_R_INFO (0, R_METAG_RELATIVE);
3188 rel.r_addend = (eh->root.u.def.value
3189 + eh->root.u.def.section->output_offset
3190 + eh->root.u.def.section->output_section->vma);
3194 if ((eh->got.offset & 1) != 0)
3196 bfd_put_32 (output_bfd, 0, htab->sgot->contents + eh->got.offset);
3197 rel.r_info = ELF32_R_INFO (eh->dynindx, R_METAG_GLOB_DAT);
3201 loc = htab->srelgot->contents;
3202 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
3203 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
3210 /* This symbol needs a copy reloc. Set it up. */
3212 if (! (eh->dynindx != -1
3213 && (eh->root.type == bfd_link_hash_defined
3214 || eh->root.type == bfd_link_hash_defweak)))
3219 rel.r_offset = (eh->root.u.def.value
3220 + eh->root.u.def.section->output_offset
3221 + eh->root.u.def.section->output_section->vma);
3223 rel.r_info = ELF32_R_INFO (eh->dynindx, R_METAG_COPY);
3224 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
3225 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
3228 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
3229 if (eh->root.root.string[0] == '_'
3230 && (strcmp (eh->root.root.string, "_DYNAMIC") == 0
3231 || eh == htab->etab.hgot))
3233 sym->st_shndx = SHN_ABS;
3239 /* Set the Meta ELF ABI version. */
3242 elf_metag_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED)
3244 Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */
3246 i_ehdrp = elf_elfheader (abfd);
3247 i_ehdrp->e_ident[EI_ABIVERSION] = METAG_ELF_ABI_VERSION;
3250 /* Used to decide how to sort relocs in an optimal manner for the
3251 dynamic linker, before writing them out. */
3253 static enum elf_reloc_type_class
3254 elf_metag_reloc_type_class (const Elf_Internal_Rela *rela)
3256 switch ((int) ELF32_R_TYPE (rela->r_info))
3258 case R_METAG_RELATIVE:
3259 return reloc_class_relative;
3260 case R_METAG_JMP_SLOT:
3261 return reloc_class_plt;
3263 return reloc_class_copy;
3265 return reloc_class_normal;
3269 /* Finish up the dynamic sections. */
3272 elf_metag_finish_dynamic_sections (bfd *output_bfd,
3273 struct bfd_link_info *info)
3276 struct elf_metag_link_hash_table *htab;
3279 htab = metag_link_hash_table (info);
3280 dynobj = htab->etab.dynobj;
3282 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3284 if (htab->etab.dynamic_sections_created)
3287 Elf32_External_Dyn *dyncon, *dynconend;
3292 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3293 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3294 for (; dyncon < dynconend; dyncon++)
3296 Elf_Internal_Dyn dyn;
3299 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3307 s = htab->sgot->output_section;
3308 BFD_ASSERT (s != NULL);
3309 dyn.d_un.d_ptr = s->vma + htab->sgot->output_offset;
3310 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3314 s = htab->srelplt->output_section;
3315 BFD_ASSERT (s != NULL);
3316 dyn.d_un.d_ptr = s->vma;
3317 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3322 dyn.d_un.d_val = s->size;
3323 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3327 /* Don't count procedure linkage table relocs in the
3328 overall reloc count. */
3329 if (htab->srelplt) {
3331 dyn.d_un.d_val -= s->size;
3333 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3337 /* We may not be using the standard ELF linker script.
3338 If .rela.plt is the first .rela section, we adjust
3339 DT_RELA to not include it. */
3340 if (htab->srelplt) {
3342 if (dyn.d_un.d_ptr == s->output_section->vma + s->output_offset)
3343 dyn.d_un.d_ptr += s->size;
3345 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3351 /* Fill in the first entry in the procedure linkage table. */
3353 if (splt && splt->size > 0)
3356 /* addr = .got + 4 */
3357 addr = htab->sgot->output_section->vma +
3358 htab->sgot->output_offset + 4;
3361 addr -= splt->output_section->vma + splt->output_offset;
3362 bfd_put_32 (output_bfd,
3363 plt0_pic_entry[0] | (((addr >> 16) & 0xffff) << 3),
3365 bfd_put_32 (output_bfd,
3366 plt0_pic_entry[1] | ((addr & 0xffff) << 3),
3367 splt->contents + 4);
3368 bfd_put_32 (output_bfd, plt0_pic_entry[2], splt->contents + 8);
3369 bfd_put_32 (output_bfd, plt0_pic_entry[3], splt->contents + 12);
3370 bfd_put_32 (output_bfd, plt0_pic_entry[4], splt->contents + 16);
3374 bfd_put_32 (output_bfd,
3375 plt0_entry[0] | (((addr >> 16) & 0xffff) << 3),
3377 bfd_put_32 (output_bfd,
3378 plt0_entry[1] | ((addr & 0xffff) << 3),
3379 splt->contents + 4);
3380 bfd_put_32 (output_bfd, plt0_entry[2], splt->contents + 8);
3381 bfd_put_32 (output_bfd, plt0_entry[3], splt->contents + 12);
3382 bfd_put_32 (output_bfd, plt0_entry[4], splt->contents + 16);
3385 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
3390 if (htab->sgot != NULL && htab->sgot->size != 0)
3392 /* Fill in the first entry in the global offset table.
3393 We use it to point to our dynamic section, if we have one. */
3394 bfd_put_32 (output_bfd,
3395 sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0,
3396 htab->sgot->contents);
3398 /* The second entry is reserved for use by the dynamic linker. */
3399 memset (htab->sgot->contents + GOT_ENTRY_SIZE, 0, GOT_ENTRY_SIZE);
3401 /* Set .got entry size. */
3402 elf_section_data (htab->sgot->output_section)
3403 ->this_hdr.sh_entsize = GOT_ENTRY_SIZE;
3409 /* Return the section that should be marked against GC for a given
3413 elf_metag_gc_mark_hook (asection *sec,
3414 struct bfd_link_info *info,
3415 Elf_Internal_Rela *rela,
3416 struct elf_link_hash_entry *hh,
3417 Elf_Internal_Sym *sym)
3420 switch ((unsigned int) ELF32_R_TYPE (rela->r_info))
3422 case R_METAG_GNU_VTINHERIT:
3423 case R_METAG_GNU_VTENTRY:
3427 return _bfd_elf_gc_mark_hook (sec, info, rela, hh, sym);
3430 /* Update the got and plt entry reference counts for the section being
3434 elf_metag_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED,
3435 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3436 asection *sec ATTRIBUTE_UNUSED,
3437 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
3439 Elf_Internal_Shdr *symtab_hdr;
3440 struct elf_link_hash_entry **eh_syms;
3441 bfd_signed_vma *local_got_refcounts;
3442 bfd_signed_vma *local_plt_refcounts;
3443 const Elf_Internal_Rela *rel, *relend;
3445 if (info->relocatable)
3448 elf_section_data (sec)->local_dynrel = NULL;
3450 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3451 eh_syms = elf_sym_hashes (abfd);
3452 local_got_refcounts = elf_local_got_refcounts (abfd);
3453 local_plt_refcounts = local_got_refcounts;
3454 if (local_plt_refcounts != NULL)
3455 local_plt_refcounts += symtab_hdr->sh_info;
3457 relend = relocs + sec->reloc_count;
3458 for (rel = relocs; rel < relend; rel++)
3460 unsigned long r_symndx;
3461 unsigned int r_type;
3462 struct elf_link_hash_entry *eh = NULL;
3464 r_symndx = ELF32_R_SYM (rel->r_info);
3465 if (r_symndx >= symtab_hdr->sh_info)
3467 struct elf_metag_link_hash_entry *hh;
3468 struct elf_metag_dyn_reloc_entry **hdh_pp;
3469 struct elf_metag_dyn_reloc_entry *hdh_p;
3471 eh = eh_syms[r_symndx - symtab_hdr->sh_info];
3472 while (eh->root.type == bfd_link_hash_indirect
3473 || eh->root.type == bfd_link_hash_warning)
3474 eh = (struct elf_link_hash_entry *) eh->root.u.i.link;
3475 hh = (struct elf_metag_link_hash_entry *) eh;
3477 for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL;
3478 hdh_pp = &hdh_p->hdh_next)
3479 if (hdh_p->sec == sec)
3481 /* Everything must go for SEC. */
3482 *hdh_pp = hdh_p->hdh_next;
3487 r_type = ELF32_R_TYPE (rel->r_info);
3490 case R_METAG_TLS_LDM:
3491 if (metag_link_hash_table (info)->tls_ldm_got.refcount > 0)
3492 metag_link_hash_table (info)->tls_ldm_got.refcount -= 1;
3494 case R_METAG_TLS_IE:
3495 case R_METAG_TLS_GD:
3496 case R_METAG_GETSET_GOT:
3499 if (eh->got.refcount > 0)
3500 eh->got.refcount -= 1;
3502 else if (local_got_refcounts != NULL)
3504 if (local_got_refcounts[r_symndx] > 0)
3505 local_got_refcounts[r_symndx] -= 1;
3509 case R_METAG_RELBRANCH_PLT:
3512 if (eh->plt.refcount > 0)
3513 eh->plt.refcount -= 1;
3517 case R_METAG_ADDR32:
3518 case R_METAG_HIADDR16:
3519 case R_METAG_LOADDR16:
3520 case R_METAG_GETSETOFF:
3521 case R_METAG_RELBRANCH:
3524 struct elf_metag_link_hash_entry *hh;
3525 struct elf_metag_dyn_reloc_entry **hdh_pp;
3526 struct elf_metag_dyn_reloc_entry *hdh_p;
3528 if (!info->shared && eh->plt.refcount > 0)
3529 eh->plt.refcount -= 1;
3531 hh = (struct elf_metag_link_hash_entry *) eh;
3533 for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL;
3534 hdh_pp = &hdh_p->hdh_next)
3535 if (hdh_p->sec == sec)
3537 if (ELF32_R_TYPE (rel->r_info) == R_METAG_RELBRANCH)
3538 hdh_p->relative_count -= 1;
3540 if (hdh_p->count == 0)
3541 *hdh_pp = hdh_p->hdh_next;
3555 /* Determine the type of stub needed, if any, for a call. */
3557 static enum elf_metag_stub_type
3558 metag_type_of_stub (asection *input_sec,
3559 const Elf_Internal_Rela *rel,
3560 struct elf_metag_link_hash_entry *hh,
3561 bfd_vma destination,
3562 struct bfd_link_info *info ATTRIBUTE_UNUSED)
3565 bfd_vma branch_offset;
3566 bfd_vma max_branch_offset;
3569 !(hh->eh.root.type == bfd_link_hash_defined
3570 || hh->eh.root.type == bfd_link_hash_defweak))
3571 return metag_stub_none;
3573 /* Determine where the call point is. */
3574 location = (input_sec->output_offset
3575 + input_sec->output_section->vma
3578 branch_offset = destination - location;
3580 /* Determine if a long branch stub is needed. Meta branch offsets
3581 are signed 19 bits 4 byte aligned. */
3582 max_branch_offset = (1 << (BRANCH_BITS-1)) << 2;
3584 if (branch_offset + max_branch_offset >= 2*max_branch_offset)
3587 return metag_stub_long_branch_shared;
3589 return metag_stub_long_branch;
3592 return metag_stub_none;
3595 #define MOVT_A0_3 0x82180005
3596 #define JUMP_A0_3 0xac180003
3598 #define MOVT_A1LBP 0x83080005
3599 #define ADD_A1LBP 0x83080000
3601 #define ADDT_A0_3_CPC 0x82980001
3602 #define ADD_A0_3_A0_3 0x82180000
3603 #define MOV_PC_A0_3 0xa3180ca0
3606 metag_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg ATTRIBUTE_UNUSED)
3608 struct elf_metag_stub_hash_entry *hsh;
3615 /* Massage our args to the form they really have. */
3616 hsh = (struct elf_metag_stub_hash_entry *) gen_entry;
3618 stub_sec = hsh->stub_sec;
3620 /* Make a note of the offset within the stubs for this entry. */
3621 hsh->stub_offset = stub_sec->size;
3622 loc = stub_sec->contents + hsh->stub_offset;
3624 stub_bfd = stub_sec->owner;
3626 switch (hsh->stub_type)
3628 case metag_stub_long_branch_shared:
3629 /* A PIC long branch stub is an ADDT and an ADD instruction used to
3630 calculate the jump target using A0.3 as a temporary. Then a MOV
3631 to PC carries out the jump. */
3632 sym_value = (hsh->target_value
3633 + hsh->target_section->output_offset
3634 + hsh->target_section->output_section->vma
3637 sym_value -= (hsh->stub_offset
3638 + stub_sec->output_offset
3639 + stub_sec->output_section->vma);
3641 bfd_put_32 (stub_bfd, ADDT_A0_3_CPC | (((sym_value >> 16) & 0xffff) << 3),
3644 bfd_put_32 (stub_bfd, ADD_A0_3_A0_3 | ((sym_value & 0xffff) << 3),
3647 bfd_put_32 (stub_bfd, MOV_PC_A0_3, loc + 8);
3651 case metag_stub_long_branch:
3652 /* A standard long branch stub is a MOVT instruction followed by a
3653 JUMP instruction using the A0.3 register as a temporary. This is
3654 the same method used by the LDLK linker (patch.c). */
3655 sym_value = (hsh->target_value
3656 + hsh->target_section->output_offset
3657 + hsh->target_section->output_section->vma
3660 bfd_put_32 (stub_bfd, MOVT_A0_3 | (((sym_value >> 16) & 0xffff) << 3),
3663 bfd_put_32 (stub_bfd, JUMP_A0_3 | ((sym_value & 0xffff) << 3), loc + 4);
3672 stub_sec->size += size;
3676 /* As above, but don't actually build the stub. Just bump offset so
3677 we know stub section sizes. */
3680 metag_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg ATTRIBUTE_UNUSED)
3682 struct elf_metag_stub_hash_entry *hsh;
3685 /* Massage our args to the form they really have. */
3686 hsh = (struct elf_metag_stub_hash_entry *) gen_entry;
3688 if (hsh->stub_type == metag_stub_long_branch)
3690 else if (hsh->stub_type == metag_stub_long_branch_shared)
3693 hsh->stub_sec->size += size;
3697 /* Set up various things so that we can make a list of input sections
3698 for each output section included in the link. Returns -1 on error,
3699 0 when no stubs will be needed, and 1 on success. */
3702 elf_metag_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info)
3705 unsigned int bfd_count;
3706 int top_id, top_index;
3708 asection **input_list, **list;
3710 struct elf_metag_link_hash_table *htab = metag_link_hash_table (info);
3712 /* Count the number of input BFDs and find the top input section id. */
3713 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
3715 input_bfd = input_bfd->link_next)
3718 for (section = input_bfd->sections;
3720 section = section->next)
3722 if (top_id < section->id)
3723 top_id = section->id;
3727 htab->bfd_count = bfd_count;
3729 amt = sizeof (struct map_stub) * (top_id + 1);
3730 htab->stub_group = bfd_zmalloc (amt);
3731 if (htab->stub_group == NULL)
3734 /* We can't use output_bfd->section_count here to find the top output
3735 section index as some sections may have been removed, and
3736 strip_excluded_output_sections doesn't renumber the indices. */
3737 for (section = output_bfd->sections, top_index = 0;
3739 section = section->next)
3741 if (top_index < section->index)
3742 top_index = section->index;
3745 htab->top_index = top_index;
3746 amt = sizeof (asection *) * (top_index + 1);
3747 input_list = bfd_malloc (amt);
3748 htab->input_list = input_list;
3749 if (input_list == NULL)
3752 /* For sections we aren't interested in, mark their entries with a
3753 value we can check later. */
3754 list = input_list + top_index;
3756 *list = bfd_abs_section_ptr;
3757 while (list-- != input_list);
3759 for (section = output_bfd->sections;
3761 section = section->next)
3763 /* FIXME: This is a bit of hack. Currently our .ctors and .dtors
3764 * have PC relative relocs in them but no code flag set. */
3765 if (((section->flags & SEC_CODE) != 0) ||
3766 strcmp(".ctors", section->name) ||
3767 strcmp(".dtors", section->name))
3768 input_list[section->index] = NULL;
3774 /* The linker repeatedly calls this function for each input section,
3775 in the order that input sections are linked into output sections.
3776 Build lists of input sections to determine groupings between which
3777 we may insert linker stubs. */
3780 elf_metag_next_input_section (struct bfd_link_info *info, asection *isec)
3782 struct elf_metag_link_hash_table *htab = metag_link_hash_table (info);
3784 if (isec->output_section->index <= htab->top_index)
3786 asection **list = htab->input_list + isec->output_section->index;
3787 if (*list != bfd_abs_section_ptr)
3789 /* Steal the link_sec pointer for our list. */
3790 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3791 /* This happens to make the list in reverse order,
3792 which is what we want. */
3793 PREV_SEC (isec) = *list;
3799 /* See whether we can group stub sections together. Grouping stub
3800 sections may result in fewer stubs. More importantly, we need to
3801 put all .init* and .fini* stubs at the beginning of the .init or
3802 .fini output sections respectively, because glibc splits the
3803 _init and _fini functions into multiple parts. Putting a stub in
3804 the middle of a function is not a good idea. */
3807 group_sections (struct elf_metag_link_hash_table *htab,
3808 bfd_size_type stub_group_size,
3809 bfd_boolean stubs_always_before_branch)
3811 asection **list = htab->input_list + htab->top_index;
3814 asection *tail = *list;
3815 if (tail == bfd_abs_section_ptr)
3817 while (tail != NULL)
3821 bfd_size_type total;
3822 bfd_boolean big_sec;
3826 big_sec = total >= stub_group_size;
3828 while ((prev = PREV_SEC (curr)) != NULL
3829 && ((total += curr->output_offset - prev->output_offset)
3833 /* OK, the size from the start of CURR to the end is less
3834 than stub_group_size bytes and thus can be handled by one stub
3835 section. (or the tail section is itself larger than
3836 stub_group_size bytes, in which case we may be toast.)
3837 We should really be keeping track of the total size of
3838 stubs added here, as stubs contribute to the final output
3842 prev = PREV_SEC (tail);
3843 /* Set up this stub group. */
3844 htab->stub_group[tail->id].link_sec = curr;
3846 while (tail != curr && (tail = prev) != NULL);
3848 /* But wait, there's more! Input sections up to stub_group_size
3849 bytes before the stub section can be handled by it too.
3850 Don't do this if we have a really large section after the
3851 stubs, as adding more stubs increases the chance that
3852 branches may not reach into the stub section. */
3853 if (!stubs_always_before_branch && !big_sec)
3857 && ((total += tail->output_offset - prev->output_offset)
3861 prev = PREV_SEC (tail);
3862 htab->stub_group[tail->id].link_sec = curr;
3868 while (list-- != htab->input_list);
3869 free (htab->input_list);
3873 /* Read in all local syms for all input bfds.
3874 Returns -1 on error, 0 otherwise. */
3877 get_local_syms (bfd *output_bfd ATTRIBUTE_UNUSED, bfd *input_bfd,
3878 struct bfd_link_info *info)
3880 unsigned int bfd_indx;
3881 Elf_Internal_Sym *local_syms, **all_local_syms;
3882 int stub_changed = 0;
3883 struct elf_metag_link_hash_table *htab = metag_link_hash_table (info);
3885 /* We want to read in symbol extension records only once. To do this
3886 we need to read in the local symbols in parallel and save them for
3887 later use; so hold pointers to the local symbols in an array. */
3888 bfd_size_type amt = sizeof (Elf_Internal_Sym *) * htab->bfd_count;
3889 all_local_syms = bfd_zmalloc (amt);
3890 htab->all_local_syms = all_local_syms;
3891 if (all_local_syms == NULL)
3894 /* Walk over all the input BFDs, swapping in local symbols. */
3897 input_bfd = input_bfd->link_next, bfd_indx++)
3899 Elf_Internal_Shdr *symtab_hdr;
3901 /* We'll need the symbol table in a second. */
3902 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3903 if (symtab_hdr->sh_info == 0)
3906 /* We need an array of the local symbols attached to the input bfd. */
3907 local_syms = (Elf_Internal_Sym *) symtab_hdr->contents;
3908 if (local_syms == NULL)
3910 local_syms = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
3911 symtab_hdr->sh_info, 0,
3913 /* Cache them for elf_link_input_bfd. */
3914 symtab_hdr->contents = (unsigned char *) local_syms;
3916 if (local_syms == NULL)
3919 all_local_syms[bfd_indx] = local_syms;
3922 return stub_changed;
3925 /* Determine and set the size of the stub section for a final link.
3927 The basic idea here is to examine all the relocations looking for
3928 PC-relative calls to a target that is unreachable with a "CALLR"
3931 /* See elf32-hppa.c and elf64-ppc.c. */
3934 elf_metag_size_stubs(bfd *output_bfd, bfd *stub_bfd,
3935 struct bfd_link_info *info,
3936 bfd_signed_vma group_size,
3937 asection * (*add_stub_section) (const char *, asection *),
3938 void (*layout_sections_again) (void))
3940 bfd_size_type stub_group_size;
3941 bfd_boolean stubs_always_before_branch;
3942 bfd_boolean stub_changed;
3943 struct elf_metag_link_hash_table *htab = metag_link_hash_table (info);
3945 /* Stash our params away. */
3946 htab->stub_bfd = stub_bfd;
3947 htab->add_stub_section = add_stub_section;
3948 htab->layout_sections_again = layout_sections_again;
3949 stubs_always_before_branch = group_size < 0;
3951 stub_group_size = -group_size;
3953 stub_group_size = group_size;
3954 if (stub_group_size == 1)
3956 /* Default values. */
3957 /* FIXME: not sure what these values should be */
3958 if (stubs_always_before_branch)
3960 stub_group_size = (1 << BRANCH_BITS);
3964 stub_group_size = (1 << BRANCH_BITS);
3968 group_sections (htab, stub_group_size, stubs_always_before_branch);
3970 switch (get_local_syms (output_bfd, info->input_bfds, info))
3973 if (htab->all_local_syms)
3974 goto error_ret_free_local;
3978 stub_changed = FALSE;
3982 stub_changed = TRUE;
3989 unsigned int bfd_indx;
3992 for (input_bfd = info->input_bfds, bfd_indx = 0;
3994 input_bfd = input_bfd->link_next, bfd_indx++)
3996 Elf_Internal_Shdr *symtab_hdr;
3998 Elf_Internal_Sym *local_syms;
4000 /* We'll need the symbol table in a second. */
4001 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
4002 if (symtab_hdr->sh_info == 0)
4005 local_syms = htab->all_local_syms[bfd_indx];
4007 /* Walk over each section attached to the input bfd. */
4008 for (section = input_bfd->sections;
4010 section = section->next)
4012 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
4014 /* If there aren't any relocs, then there's nothing more
4016 if ((section->flags & SEC_RELOC) == 0
4017 || section->reloc_count == 0)
4020 /* If this section is a link-once section that will be
4021 discarded, then don't create any stubs. */
4022 if (section->output_section == NULL
4023 || section->output_section->owner != output_bfd)
4026 /* Get the relocs. */
4028 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
4030 if (internal_relocs == NULL)
4031 goto error_ret_free_local;
4033 /* Now examine each relocation. */
4034 irela = internal_relocs;
4035 irelaend = irela + section->reloc_count;
4036 for (; irela < irelaend; irela++)
4038 unsigned int r_type, r_indx;
4039 enum elf_metag_stub_type stub_type;
4040 struct elf_metag_stub_hash_entry *hsh;
4043 bfd_vma destination;
4044 struct elf_metag_link_hash_entry *hh;
4046 const asection *id_sec;
4048 r_type = ELF32_R_TYPE (irela->r_info);
4049 r_indx = ELF32_R_SYM (irela->r_info);
4051 if (r_type >= (unsigned int) R_METAG_MAX)
4053 bfd_set_error (bfd_error_bad_value);
4054 error_ret_free_internal:
4055 if (elf_section_data (section)->relocs == NULL)
4056 free (internal_relocs);
4057 goto error_ret_free_local;
4060 /* Only look for stubs on CALLR and B instructions. */
4061 if (!(r_type == (unsigned int) R_METAG_RELBRANCH ||
4062 r_type == (unsigned int) R_METAG_RELBRANCH_PLT))
4065 /* Now determine the call target, its name, value,
4071 if (r_indx < symtab_hdr->sh_info)
4073 /* It's a local symbol. */
4074 Elf_Internal_Sym *sym;
4075 Elf_Internal_Shdr *hdr;
4078 sym = local_syms + r_indx;
4079 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
4080 sym_value = sym->st_value;
4081 shndx = sym->st_shndx;
4082 if (shndx < elf_numsections (input_bfd))
4084 hdr = elf_elfsections (input_bfd)[shndx];
4085 sym_sec = hdr->bfd_section;
4086 destination = (sym_value + irela->r_addend
4087 + sym_sec->output_offset
4088 + sym_sec->output_section->vma);
4093 /* It's an external symbol. */
4096 e_indx = r_indx - symtab_hdr->sh_info;
4097 hh = ((struct elf_metag_link_hash_entry *)
4098 elf_sym_hashes (input_bfd)[e_indx]);
4100 while (hh->eh.root.type == bfd_link_hash_indirect
4101 || hh->eh.root.type == bfd_link_hash_warning)
4102 hh = ((struct elf_metag_link_hash_entry *)
4103 hh->eh.root.u.i.link);
4105 if (hh->eh.root.type == bfd_link_hash_defined
4106 || hh->eh.root.type == bfd_link_hash_defweak)
4108 sym_sec = hh->eh.root.u.def.section;
4109 sym_value = hh->eh.root.u.def.value;
4110 if (hh->eh.plt.offset != (bfd_vma) -1
4111 && hh->eh.dynindx != -1
4112 && r_type == (unsigned int) R_METAG_RELBRANCH_PLT)
4114 sym_sec = htab->splt;
4115 sym_value = hh->eh.plt.offset;
4118 if (sym_sec->output_section != NULL)
4119 destination = (sym_value + irela->r_addend
4120 + sym_sec->output_offset
4121 + sym_sec->output_section->vma);
4125 else if (hh->eh.root.type == bfd_link_hash_undefweak)
4130 else if (hh->eh.root.type == bfd_link_hash_undefined)
4132 if (! (info->unresolved_syms_in_objects == RM_IGNORE
4133 && (ELF_ST_VISIBILITY (hh->eh.other)
4139 bfd_set_error (bfd_error_bad_value);
4140 goto error_ret_free_internal;
4144 /* Determine what (if any) linker stub is needed. */
4145 stub_type = metag_type_of_stub (section, irela, hh,
4147 if (stub_type == metag_stub_none)
4150 /* Support for grouping stub sections. */
4151 id_sec = htab->stub_group[section->id].link_sec;
4153 /* Get the name of this stub. */
4154 stub_name = metag_stub_name (id_sec, sym_sec, hh, irela);
4156 goto error_ret_free_internal;
4158 hsh = metag_stub_hash_lookup (&htab->bstab,
4163 /* The proper stub has already been created. */
4168 hsh = metag_add_stub (stub_name, section, htab);
4172 goto error_ret_free_internal;
4174 hsh->target_value = sym_value;
4175 hsh->target_section = sym_sec;
4176 hsh->stub_type = stub_type;
4178 hsh->addend = irela->r_addend;
4179 stub_changed = TRUE;
4182 /* We're done with the internal relocs, free them. */
4183 if (elf_section_data (section)->relocs == NULL)
4184 free (internal_relocs);
4191 /* OK, we've added some stubs. Find out the new size of the
4193 for (stub_sec = htab->stub_bfd->sections;
4195 stub_sec = stub_sec->next)
4198 bfd_hash_traverse (&htab->bstab, metag_size_one_stub, htab);
4200 /* Ask the linker to do its stuff. */
4201 (*htab->layout_sections_again) ();
4202 stub_changed = FALSE;
4205 free (htab->all_local_syms);
4208 error_ret_free_local:
4209 free (htab->all_local_syms);
4213 /* Build all the stubs associated with the current output file. The
4214 stubs are kept in a hash table attached to the main linker hash
4215 table. This function is called via metagelf_finish in the linker. */
4218 elf_metag_build_stubs (struct bfd_link_info *info)
4221 struct bfd_hash_table *table;
4222 struct elf_metag_link_hash_table *htab;
4224 htab = metag_link_hash_table (info);
4226 for (stub_sec = htab->stub_bfd->sections;
4228 stub_sec = stub_sec->next)
4232 /* Allocate memory to hold the linker stubs. */
4233 size = stub_sec->size;
4234 stub_sec->contents = bfd_zalloc (htab->stub_bfd, size);
4235 if (stub_sec->contents == NULL && size != 0)
4240 /* Build the stubs as directed by the stub hash table. */
4241 table = &htab->bstab;
4242 bfd_hash_traverse (table, metag_build_one_stub, info);
4247 /* Return TRUE if SYM represents a local label symbol. */
4250 elf_metag_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name)
4252 if (name[0] == '$' && name[1] == 'L')
4254 return _bfd_elf_is_local_label_name (abfd, name);
4257 /* Return address for Ith PLT stub in section PLT, for relocation REL
4258 or (bfd_vma) -1 if it should not be included. */
4261 elf_metag_plt_sym_val (bfd_vma i, const asection *plt,
4262 const arelent *rel ATTRIBUTE_UNUSED)
4264 return plt->vma + (i + 1) * PLT_ENTRY_SIZE;
4267 #define ELF_ARCH bfd_arch_metag
4268 #define ELF_TARGET_ID METAG_ELF_DATA
4269 #define ELF_MACHINE_CODE EM_METAG
4270 #define ELF_MINPAGESIZE 0x1000
4271 #define ELF_MAXPAGESIZE 0x4000
4272 #define ELF_COMMONPAGESIZE 0x1000
4274 #define TARGET_LITTLE_SYM bfd_elf32_metag_vec
4275 #define TARGET_LITTLE_NAME "elf32-metag"
4277 #define elf_symbol_leading_char '_'
4279 #define elf_info_to_howto_rel NULL
4280 #define elf_info_to_howto metag_info_to_howto_rela
4282 #define bfd_elf32_bfd_is_local_label_name elf_metag_is_local_label_name
4283 #define bfd_elf32_bfd_link_hash_table_create \
4284 elf_metag_link_hash_table_create
4285 #define bfd_elf32_bfd_link_hash_table_free elf_metag_link_hash_table_free
4286 #define elf_backend_relocate_section elf_metag_relocate_section
4287 #define elf_backend_gc_mark_hook elf_metag_gc_mark_hook
4288 #define elf_backend_gc_sweep_hook elf_metag_gc_sweep_hook
4289 #define elf_backend_check_relocs elf_metag_check_relocs
4290 #define elf_backend_create_dynamic_sections elf_metag_create_dynamic_sections
4291 #define elf_backend_adjust_dynamic_symbol elf_metag_adjust_dynamic_symbol
4292 #define elf_backend_finish_dynamic_symbol elf_metag_finish_dynamic_symbol
4293 #define elf_backend_finish_dynamic_sections elf_metag_finish_dynamic_sections
4294 #define elf_backend_size_dynamic_sections elf_metag_size_dynamic_sections
4295 #define elf_backend_omit_section_dynsym \
4296 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4297 #define elf_backend_post_process_headers elf_metag_post_process_headers
4298 #define elf_backend_reloc_type_class elf_metag_reloc_type_class
4299 #define elf_backend_copy_indirect_symbol elf_metag_copy_indirect_symbol
4300 #define elf_backend_plt_sym_val elf_metag_plt_sym_val
4302 #define elf_backend_can_gc_sections 1
4303 #define elf_backend_can_refcount 1
4304 #define elf_backend_got_header_size 12
4305 #define elf_backend_rela_normal 1
4306 #define elf_backend_want_got_sym 0
4307 #define elf_backend_want_plt_sym 0
4308 #define elf_backend_plt_readonly 1
4310 #define bfd_elf32_bfd_reloc_type_lookup metag_reloc_type_lookup
4311 #define bfd_elf32_bfd_reloc_name_lookup metag_reloc_name_lookup
4313 #include "elf32-target.h"