1 /* Meta support for 32-bit ELF
2 Copyright (C) 2013-2014 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 /* Free the derived linker hash table. */
1023 elf_metag_link_hash_table_free (bfd *obfd)
1025 struct elf_metag_link_hash_table *htab
1026 = (struct elf_metag_link_hash_table *) obfd->link.hash;
1028 bfd_hash_table_free (&htab->bstab);
1029 _bfd_elf_link_hash_table_free (obfd);
1032 /* Create the derived linker hash table. The Meta ELF port uses the derived
1033 hash table to keep information specific to the Meta ELF linker (without
1034 using static variables). */
1036 static struct bfd_link_hash_table *
1037 elf_metag_link_hash_table_create (bfd *abfd)
1039 struct elf_metag_link_hash_table *htab;
1040 bfd_size_type amt = sizeof (*htab);
1042 htab = bfd_zmalloc (amt);
1046 if (!_bfd_elf_link_hash_table_init (&htab->etab, abfd,
1047 metag_link_hash_newfunc,
1048 sizeof (struct elf_metag_link_hash_entry),
1055 /* Init the stub hash table too. */
1056 if (!bfd_hash_table_init (&htab->bstab, stub_hash_newfunc,
1057 sizeof (struct elf_metag_stub_hash_entry)))
1059 _bfd_elf_link_hash_table_free (abfd);
1062 htab->etab.root.hash_table_free = elf_metag_link_hash_table_free;
1064 return &htab->etab.root;
1067 /* Section name for stubs is the associated section name plus this
1069 #define STUB_SUFFIX ".stub"
1071 /* Build a name for an entry in the stub hash table. */
1074 metag_stub_name (const asection *input_section,
1075 const asection *sym_sec,
1076 const struct elf_metag_link_hash_entry *hh,
1077 const Elf_Internal_Rela *rel)
1084 len = 8 + 1 + strlen (hh->eh.root.root.string) + 1 + 8 + 1;
1085 stub_name = bfd_malloc (len);
1086 if (stub_name != NULL)
1088 sprintf (stub_name, "%08x_%s+%x",
1089 input_section->id & 0xffffffff,
1090 hh->eh.root.root.string,
1091 (int) rel->r_addend & 0xffffffff);
1096 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
1097 stub_name = bfd_malloc (len);
1098 if (stub_name != NULL)
1100 sprintf (stub_name, "%08x_%x:%x+%x",
1101 input_section->id & 0xffffffff,
1102 sym_sec->id & 0xffffffff,
1103 (int) ELF32_R_SYM (rel->r_info) & 0xffffffff,
1104 (int) rel->r_addend & 0xffffffff);
1110 /* Look up an entry in the stub hash. Stub entries are cached because
1111 creating the stub name takes a bit of time. */
1113 static struct elf_metag_stub_hash_entry *
1114 metag_get_stub_entry (const asection *input_section,
1115 const asection *sym_sec,
1116 struct elf_metag_link_hash_entry *hh,
1117 const Elf_Internal_Rela *rel,
1118 struct elf_metag_link_hash_table *htab)
1120 struct elf_metag_stub_hash_entry *hsh;
1121 const asection *id_sec;
1123 /* If this input section is part of a group of sections sharing one
1124 stub section, then use the id of the first section in the group.
1125 Stub names need to include a section id, as there may well be
1126 more than one stub used to reach say, printf, and we need to
1127 distinguish between them. */
1128 id_sec = htab->stub_group[input_section->id].link_sec;
1130 if (hh != NULL && hh->hsh_cache != NULL
1131 && hh->hsh_cache->hh == hh
1132 && hh->hsh_cache->id_sec == id_sec)
1134 hsh = hh->hsh_cache;
1140 stub_name = metag_stub_name (id_sec, sym_sec, hh, rel);
1141 if (stub_name == NULL)
1144 hsh = metag_stub_hash_lookup (&htab->bstab,
1145 stub_name, FALSE, FALSE);
1148 hh->hsh_cache = hsh;
1156 /* Add a new stub entry to the stub hash. Not all fields of the new
1157 stub entry are initialised. */
1159 static struct elf_metag_stub_hash_entry *
1160 metag_add_stub (const char *stub_name,
1162 struct elf_metag_link_hash_table *htab)
1166 struct elf_metag_stub_hash_entry *hsh;
1168 link_sec = htab->stub_group[section->id].link_sec;
1169 stub_sec = htab->stub_group[section->id].stub_sec;
1170 if (stub_sec == NULL)
1172 stub_sec = htab->stub_group[link_sec->id].stub_sec;
1173 if (stub_sec == NULL)
1179 namelen = strlen (link_sec->name);
1180 len = namelen + sizeof (STUB_SUFFIX);
1181 s_name = bfd_alloc (htab->stub_bfd, len);
1185 memcpy (s_name, link_sec->name, namelen);
1186 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
1188 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
1189 if (stub_sec == NULL)
1191 htab->stub_group[link_sec->id].stub_sec = stub_sec;
1193 htab->stub_group[section->id].stub_sec = stub_sec;
1196 /* Enter this entry into the linker stub hash table. */
1197 hsh = metag_stub_hash_lookup (&htab->bstab, stub_name,
1201 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
1207 hsh->stub_sec = stub_sec;
1208 hsh->stub_offset = 0;
1209 hsh->id_sec = link_sec;
1213 /* Check a signed integer value can be represented in the given number
1217 within_signed_range (int value, unsigned int bits)
1219 int min_val = -(1 << (bits - 1));
1220 int max_val = (1 << (bits - 1)) - 1;
1221 return (value <= max_val) && (value >= min_val);
1224 /* Perform a relocation as part of a final link. */
1226 static bfd_reloc_status_type
1227 metag_final_link_relocate (reloc_howto_type *howto,
1229 asection *input_section,
1231 Elf_Internal_Rela *rel,
1233 struct elf_metag_link_hash_entry *hh,
1234 struct elf_metag_link_hash_table *htab,
1237 bfd_reloc_status_type r = bfd_reloc_ok;
1238 bfd_byte *hit_data = contents + rel->r_offset;
1239 int opcode, op_shift, op_extended, l1, l2;
1240 bfd_signed_vma srel, addend = rel->r_addend;
1241 struct elf_metag_stub_hash_entry *hsh = NULL;
1244 /* Find out where we are and where we're going. */
1245 location = (rel->r_offset +
1246 input_section->output_offset +
1247 input_section->output_section->vma);
1249 switch (howto->type)
1251 case R_METAG_RELBRANCH:
1252 case R_METAG_RELBRANCH_PLT:
1253 /* Make it a pc relative offset. */
1254 relocation -= location;
1256 case R_METAG_TLS_GD:
1257 case R_METAG_TLS_IE:
1258 relocation -= elf_gp (input_section->output_section->owner);
1264 switch (howto->type)
1266 case R_METAG_RELBRANCH_PLT:
1267 case R_METAG_RELBRANCH:
1268 opcode = bfd_get_32 (input_bfd, hit_data);
1270 srel = (bfd_signed_vma) relocation;
1273 /* If the branch is out of reach, then redirect the
1274 call to the local stub for this function. */
1275 if (srel > ((1 << (BRANCH_BITS + 1)) - 1) ||
1276 (srel < - (1 << (BRANCH_BITS + 1))))
1278 if (sym_sec == NULL)
1281 hsh = metag_get_stub_entry (input_section, sym_sec,
1284 return bfd_reloc_undefined;
1286 /* Munge up the value and addend so that we call the stub
1287 rather than the procedure directly. */
1288 srel = (hsh->stub_offset
1289 + hsh->stub_sec->output_offset
1290 + hsh->stub_sec->output_section->vma);
1296 if (!within_signed_range (srel, BRANCH_BITS))
1298 if (hh && hh->eh.root.type == bfd_link_hash_undefweak)
1301 return bfd_reloc_overflow;
1304 opcode &= ~(0x7ffff << 5);
1305 opcode |= ((srel & 0x7ffff) << 5);
1307 bfd_put_32 (input_bfd, opcode, hit_data);
1309 case R_METAG_GETSETOFF:
1310 case R_METAG_GETSET_GOT:
1311 case R_METAG_GETSET_GOTOFF:
1312 opcode = bfd_get_32 (input_bfd, hit_data);
1314 srel = (bfd_signed_vma) relocation;
1317 /* Is this a standard or extended GET/SET? */
1318 if ((opcode & 0xf0000000) == 0xa0000000)
1320 /* Extended GET/SET. */
1327 /* Standard GET/SET. */
1328 l1 = opcode & 0x01000000;
1329 l2 = opcode & 0x04000000;
1333 /* Calculate the width of the GET/SET and how much we need to
1334 shift the result by. */
1346 /* GET/SET offsets are scaled by the width of the transfer. */
1347 srel = srel >> op_shift;
1349 /* Extended GET/SET has signed 12 bits of offset, standard has
1353 if (!within_signed_range (srel, 12))
1355 if (hh && hh->eh.root.type == bfd_link_hash_undefweak)
1358 return bfd_reloc_overflow;
1360 opcode &= ~(0xfff << 7);
1361 opcode |= ((srel & 0xfff) << 7);
1365 if (!within_signed_range (srel, 5))
1367 if (hh && hh->eh.root.type == bfd_link_hash_undefweak)
1370 return bfd_reloc_overflow;
1372 opcode &= ~(0x3f << 8);
1373 opcode |= ((srel & 0x3f) << 8);
1376 bfd_put_32 (input_bfd, opcode, hit_data);
1378 case R_METAG_TLS_GD:
1379 case R_METAG_TLS_LDM:
1380 opcode = bfd_get_32 (input_bfd, hit_data);
1382 if ((bfd_signed_vma)relocation < 0)
1384 /* sign extend immediate */
1385 if ((opcode & 0xf2000001) == 0x02000000)
1387 /* ADD De.e,Dx.r,#I16 */
1391 return bfd_reloc_overflow;
1394 bfd_put_32 (input_bfd, opcode, hit_data);
1396 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
1397 contents, rel->r_offset,
1398 relocation, rel->r_addend);
1401 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
1402 contents, rel->r_offset,
1403 relocation, rel->r_addend);
1409 /* This is defined because R_METAG_NONE != 0...
1410 See RELOC_AGAINST_DISCARDED_SECTION for details. */
1411 #define METAG_RELOC_AGAINST_DISCARDED_SECTION(info, input_bfd, input_section, \
1412 rel, relend, howto, contents) \
1414 _bfd_clear_contents (howto, input_bfd, input_section, \
1415 contents + rel->r_offset); \
1417 if (info->relocatable \
1418 && (input_section->flags & SEC_DEBUGGING)) \
1420 /* Only remove relocations in debug sections since other \
1421 sections may require relocations. */ \
1422 Elf_Internal_Shdr *rel_hdr; \
1424 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); \
1426 /* Avoid empty output section. */ \
1427 if (rel_hdr->sh_size > rel_hdr->sh_entsize) \
1429 rel_hdr->sh_size -= rel_hdr->sh_entsize; \
1430 rel_hdr = _bfd_elf_single_rel_hdr (input_section); \
1431 rel_hdr->sh_size -= rel_hdr->sh_entsize; \
1433 memmove (rel, rel + 1, (relend - rel) * sizeof (*rel)); \
1435 input_section->reloc_count--; \
1442 rel->r_info = R_METAG_NONE; \
1443 rel->r_addend = 0; \
1447 /* Relocate a META ELF section.
1449 The RELOCATE_SECTION function is called by the new ELF backend linker
1450 to handle the relocations for a section.
1452 The relocs are always passed as Rela structures; if the section
1453 actually uses Rel structures, the r_addend field will always be
1456 This function is responsible for adjusting the section contents as
1457 necessary, and (if using Rela relocs and generating a relocatable
1458 output file) adjusting the reloc addend as necessary.
1460 This function does not have to worry about setting the reloc
1461 address or the reloc symbol index.
1463 LOCAL_SYMS is a pointer to the swapped in local symbols.
1465 LOCAL_SECTIONS is an array giving the section in the input file
1466 corresponding to the st_shndx field of each local symbol.
1468 The global hash table entry for the global symbols can be found
1469 via elf_sym_hashes (input_bfd).
1471 When generating relocatable output, this function must handle
1472 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
1473 going to be the section symbol corresponding to the output
1474 section, which means that the addend must be adjusted
1478 elf_metag_relocate_section (bfd *output_bfd,
1479 struct bfd_link_info *info,
1481 asection *input_section,
1483 Elf_Internal_Rela *relocs,
1484 Elf_Internal_Sym *local_syms,
1485 asection **local_sections)
1487 bfd_vma *local_got_offsets;
1488 Elf_Internal_Shdr *symtab_hdr;
1489 struct elf_link_hash_entry **eh_syms;
1490 struct elf_metag_link_hash_table *htab;
1491 Elf_Internal_Rela *rel;
1492 Elf_Internal_Rela *relend;
1495 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1496 eh_syms = elf_sym_hashes (input_bfd);
1497 relend = relocs + input_section->reloc_count;
1499 htab = metag_link_hash_table (info);
1500 local_got_offsets = elf_local_got_offsets (input_bfd);
1504 for (rel = relocs; rel < relend; rel ++)
1506 reloc_howto_type *howto;
1507 unsigned long r_symndx;
1508 Elf_Internal_Sym *sym;
1510 struct elf_metag_link_hash_entry *hh;
1512 bfd_reloc_status_type r;
1516 r_type = ELF32_R_TYPE (rel->r_info);
1518 if (r_type == R_METAG_GNU_VTINHERIT
1519 || r_type == R_METAG_GNU_VTENTRY
1520 || r_type == R_METAG_NONE)
1523 r_symndx = ELF32_R_SYM (rel->r_info);
1525 howto = elf_metag_howto_table + ELF32_R_TYPE (rel->r_info);
1530 if (r_symndx < symtab_hdr->sh_info)
1532 sym = local_syms + r_symndx;
1533 sec = local_sections [r_symndx];
1534 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1536 name = bfd_elf_string_from_elf_section
1537 (input_bfd, symtab_hdr->sh_link, sym->st_name);
1538 name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
1542 struct elf_link_hash_entry *eh;
1543 bfd_boolean unresolved_reloc, warned, ignored;
1545 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1546 r_symndx, symtab_hdr, eh_syms,
1547 eh, sec, relocation,
1548 unresolved_reloc, warned, ignored);
1550 name = eh->root.root.string;
1551 hh = (struct elf_metag_link_hash_entry *) eh;
1554 if (sec != NULL && discarded_section (sec))
1555 METAG_RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
1556 rel, relend, howto, contents);
1558 if (info->relocatable)
1563 case R_METAG_ADDR32:
1564 case R_METAG_RELBRANCH:
1565 if ((input_section->flags & SEC_ALLOC) == 0)
1569 && r_symndx != STN_UNDEF
1570 && (input_section->flags & SEC_ALLOC) != 0
1571 && (r_type != R_METAG_RELBRANCH
1572 || !SYMBOL_CALLS_LOCAL (info, &hh->eh)))
1575 && hh->eh.dynindx != -1
1576 && !hh->eh.non_got_ref
1577 && ((hh->eh.def_dynamic
1578 && !hh->eh.def_regular)
1579 || hh->eh.root.type == bfd_link_hash_undefweak
1580 || hh->eh.root.type == bfd_link_hash_undefined)))
1582 Elf_Internal_Rela outrel;
1583 bfd_boolean skip, relocate;
1586 /* When generating a shared object, these relocations
1587 are copied into the output file to be resolved at run
1590 sreloc = elf_section_data (input_section)->sreloc;
1591 BFD_ASSERT (sreloc != NULL);
1596 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
1600 if (outrel.r_offset == (bfd_vma) -1)
1602 else if (outrel.r_offset == (bfd_vma) -2)
1603 skip = TRUE, relocate = TRUE;
1604 outrel.r_offset += (input_section->output_section->vma
1605 + input_section->output_offset);
1609 memset (&outrel, 0, sizeof outrel);
1610 outrel.r_info = ELF32_R_INFO (0, R_METAG_NONE);
1612 else if (r_type == R_METAG_RELBRANCH)
1614 BFD_ASSERT (hh != NULL && hh->eh.dynindx != -1);
1615 outrel.r_info = ELF32_R_INFO (hh->eh.dynindx, r_type);
1616 outrel.r_addend = rel->r_addend;
1620 /* h->dynindx may be -1 if this symbol was marked to
1623 || ((info->symbolic || hh->eh.dynindx == -1)
1624 && hh->eh.def_regular))
1627 outrel.r_info = ELF32_R_INFO (0, R_METAG_RELATIVE);
1628 outrel.r_addend = relocation + rel->r_addend;
1632 BFD_ASSERT (hh->eh.dynindx != -1);
1633 outrel.r_info = ELF32_R_INFO (hh->eh.dynindx, r_type);
1634 outrel.r_addend = rel->r_addend;
1638 loc = sreloc->contents;
1639 loc += sreloc->reloc_count * sizeof(Elf32_External_Rela);
1640 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
1641 ++sreloc->reloc_count;
1643 /* If this reloc is against an external symbol, we do
1644 not want to fiddle with the addend. Otherwise, we
1645 need to include the symbol value so that it becomes
1646 an addend for the dynamic reloc. */
1652 case R_METAG_RELBRANCH_PLT:
1653 /* Relocation is to the entry for this symbol in the
1654 procedure linkage table. */
1659 if (hh->eh.forced_local)
1662 if (hh->eh.plt.offset == (bfd_vma) -1 ||
1665 /* We didn't make a PLT entry for this symbol. This
1666 happens when statically linking PIC code, or when
1667 using -Bsymbolic. */
1671 relocation = (htab->splt->output_section->vma
1672 + htab->splt->output_offset
1673 + hh->eh.plt.offset);
1675 case R_METAG_HI16_GOTPC:
1676 case R_METAG_LO16_GOTPC:
1677 BFD_ASSERT (htab->sgot != NULL);
1679 relocation = (htab->sgot->output_section->vma +
1680 htab->sgot->output_offset);
1681 relocation += GOT_REG_OFFSET;
1682 relocation -= (input_section->output_section->vma
1683 + input_section->output_offset
1686 case R_METAG_HI16_GOTOFF:
1687 case R_METAG_LO16_GOTOFF:
1688 case R_METAG_GETSET_GOTOFF:
1689 BFD_ASSERT (htab->sgot != NULL);
1691 relocation -= (htab->sgot->output_section->vma +
1692 htab->sgot->output_offset);
1693 relocation -= GOT_REG_OFFSET;
1695 case R_METAG_GETSET_GOT:
1698 bfd_boolean do_got = 0;
1700 /* Relocation is to the entry for this symbol in the
1701 global offset table. */
1706 off = hh->eh.got.offset;
1707 dyn = htab->etab.dynamic_sections_created;
1708 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
1711 /* If we aren't going to call finish_dynamic_symbol,
1712 then we need to handle initialisation of the .got
1713 entry and create needed relocs here. Since the
1714 offset must always be a multiple of 4, we use the
1715 least significant bit to record whether we have
1716 initialised it already. */
1721 hh->eh.got.offset |= 1;
1728 /* Local symbol case. */
1729 if (local_got_offsets == NULL)
1732 off = local_got_offsets[r_symndx];
1734 /* The offset must always be a multiple of 4. We use
1735 the least significant bit to record whether we have
1736 already generated the necessary reloc. */
1741 local_got_offsets[r_symndx] |= 1;
1750 /* Output a dynamic relocation for this GOT entry.
1751 In this case it is relative to the base of the
1752 object because the symbol index is zero. */
1753 Elf_Internal_Rela outrel;
1755 asection *s = htab->srelgot;
1757 outrel.r_offset = (off
1758 + htab->sgot->output_offset
1759 + htab->sgot->output_section->vma);
1760 outrel.r_info = ELF32_R_INFO (0, R_METAG_RELATIVE);
1761 outrel.r_addend = relocation;
1763 loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
1764 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1767 bfd_put_32 (output_bfd, relocation,
1768 htab->sgot->contents + off);
1771 if (off >= (bfd_vma) -2)
1774 relocation = off - GOT_REG_OFFSET;
1777 case R_METAG_TLS_GD:
1778 case R_METAG_TLS_IE:
1780 /* XXXMJF There is room here for optimisations. For example
1781 converting from GD->IE, etc. */
1786 if (htab->sgot == NULL)
1793 dyn = htab->etab.dynamic_sections_created;
1795 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, &hh->eh)
1797 || !SYMBOL_REFERENCES_LOCAL (info, &hh->eh)))
1799 indx = hh->eh.dynindx;
1801 off = hh->eh.got.offset;
1802 tls_type = hh->tls_type;
1806 /* Local symbol case. */
1807 if (local_got_offsets == NULL)
1810 off = local_got_offsets[r_symndx];
1811 tls_type = metag_elf_local_got_tls_type (input_bfd) [r_symndx];
1814 if (tls_type == GOT_UNKNOWN)
1821 bfd_boolean need_relocs = FALSE;
1822 Elf_Internal_Rela outrel;
1823 bfd_byte *loc = NULL;
1826 /* The GOT entries have not been initialized yet. Do it
1827 now, and emit any relocations. If both an IE GOT and a
1828 GD GOT are necessary, we emit the GD first. */
1830 if ((info->shared || indx != 0)
1832 || ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT
1833 || hh->eh.root.type != bfd_link_hash_undefweak))
1836 loc = htab->srelgot->contents;
1837 /* FIXME (CAO): Should this be reloc_count++ ? */
1838 loc += htab->srelgot->reloc_count * sizeof (Elf32_External_Rela);
1841 if (tls_type & GOT_TLS_GD)
1845 outrel.r_offset = (cur_off
1846 + htab->sgot->output_section->vma
1847 + htab->sgot->output_offset);
1848 outrel.r_info = ELF32_R_INFO (indx, R_METAG_TLS_DTPMOD);
1849 outrel.r_addend = 0;
1850 bfd_put_32 (output_bfd, 0, htab->sgot->contents + cur_off);
1852 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1853 htab->srelgot->reloc_count++;
1854 loc += sizeof (Elf32_External_Rela);
1857 bfd_put_32 (output_bfd, 0,
1858 htab->sgot->contents + cur_off + 4);
1861 bfd_put_32 (output_bfd, 0,
1862 htab->sgot->contents + cur_off + 4);
1863 outrel.r_info = ELF32_R_INFO (indx,
1864 R_METAG_TLS_DTPOFF);
1865 outrel.r_offset += 4;
1866 bfd_elf32_swap_reloca_out (output_bfd,
1868 htab->srelgot->reloc_count++;
1869 loc += sizeof (Elf32_External_Rela);
1874 /* We don't support changing the TLS model. */
1881 if (tls_type & GOT_TLS_IE)
1885 outrel.r_offset = (cur_off
1886 + htab->sgot->output_section->vma
1887 + htab->sgot->output_offset);
1888 outrel.r_info = ELF32_R_INFO (indx, R_METAG_TLS_TPOFF);
1891 outrel.r_addend = relocation - dtpoff_base (info);
1893 outrel.r_addend = 0;
1895 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1896 htab->srelgot->reloc_count++;
1897 loc += sizeof (Elf32_External_Rela);
1900 bfd_put_32 (output_bfd, tpoff (info, relocation),
1901 htab->sgot->contents + cur_off);
1907 hh->eh.got.offset |= 1;
1909 local_got_offsets[r_symndx] |= 1;
1912 /* Add the base of the GOT to the relocation value. */
1913 relocation = off - GOT_REG_OFFSET;
1918 case R_METAG_TLS_IENONPIC_HI16:
1919 case R_METAG_TLS_IENONPIC_LO16:
1920 case R_METAG_TLS_LE_HI16:
1921 case R_METAG_TLS_LE_LO16:
1924 (*_bfd_error_handler)
1925 (_("%B(%A+0x%lx): R_METAG_TLS_LE/IENONPIC relocation not permitted in shared object"),
1926 input_bfd, input_section,
1927 (long) rel->r_offset, howto->name);
1931 relocation = tpoff (info, relocation);
1933 case R_METAG_TLS_LDO_HI16:
1934 case R_METAG_TLS_LDO_LO16:
1936 relocation = tpoff (info, relocation);
1938 relocation -= dtpoff_base (info);
1940 case R_METAG_TLS_LDM:
1944 if (htab->sgot == NULL)
1946 off = htab->tls_ldm_got.offset;
1951 Elf_Internal_Rela outrel;
1954 outrel.r_offset = (off
1955 + htab->sgot->output_section->vma
1956 + htab->sgot->output_offset);
1958 outrel.r_addend = 0;
1959 outrel.r_info = ELF32_R_INFO (0, R_METAG_TLS_DTPMOD);
1960 loc = htab->srelgot->contents;
1961 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1962 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1963 htab->tls_ldm_got.offset |= 1;
1966 relocation = off - GOT_REG_OFFSET;
1973 r = metag_final_link_relocate (howto, input_bfd, input_section,
1974 contents, rel, relocation, hh, htab,
1977 if (r != bfd_reloc_ok)
1979 const char * msg = (const char *) NULL;
1983 case bfd_reloc_overflow:
1984 r = info->callbacks->reloc_overflow
1985 (info, (hh ? &hh->eh.root : NULL), name, howto->name,
1986 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
1989 case bfd_reloc_undefined:
1990 r = info->callbacks->undefined_symbol
1991 (info, name, input_bfd, input_section, rel->r_offset,
1995 case bfd_reloc_outofrange:
1996 msg = _("internal error: out of range error");
1999 case bfd_reloc_notsupported:
2000 msg = _("internal error: unsupported relocation error");
2003 case bfd_reloc_dangerous:
2004 msg = _("internal error: dangerous relocation");
2008 msg = _("internal error: unknown error");
2013 r = info->callbacks->warning
2014 (info, msg, name, input_bfd, input_section, rel->r_offset);
2024 /* Create the .plt and .got sections, and set up our hash table
2025 short-cuts to various dynamic sections. */
2028 elf_metag_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2030 struct elf_metag_link_hash_table *htab;
2031 struct elf_link_hash_entry *eh;
2032 struct bfd_link_hash_entry *bh;
2033 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2035 /* Don't try to create the .plt and .got twice. */
2036 htab = metag_link_hash_table (info);
2037 if (htab->splt != NULL)
2040 /* Call the generic code to do most of the work. */
2041 if (! _bfd_elf_create_dynamic_sections (abfd, info))
2044 htab->sgot = bfd_get_linker_section (abfd, ".got");
2048 htab->sgotplt = bfd_make_section_with_flags (abfd, ".got.plt",
2049 (SEC_ALLOC | SEC_LOAD |
2052 SEC_LINKER_CREATED));
2053 if (htab->sgotplt == NULL
2054 || !bfd_set_section_alignment (abfd, htab->sgotplt, 2))
2057 /* Define the symbol __GLOBAL_OFFSET_TABLE__ at the start of the .got
2058 section. We don't do this in the linker script because we don't want
2059 to define the symbol if we are not creating a global offset table. */
2061 if (!(_bfd_generic_link_add_one_symbol
2062 (info, abfd, "__GLOBAL_OFFSET_TABLE__", BSF_GLOBAL, htab->sgot,
2063 (bfd_vma) 0, NULL, FALSE, bed->collect, &bh)))
2065 eh = (struct elf_link_hash_entry *) bh;
2066 eh->def_regular = 1;
2067 eh->type = STT_OBJECT;
2068 eh->other = STV_HIDDEN;
2070 if (! info->executable
2071 && ! bfd_elf_link_record_dynamic_symbol (info, eh))
2074 elf_hash_table (info)->hgot = eh;
2076 htab->splt = bfd_get_linker_section (abfd, ".plt");
2077 htab->srelplt = bfd_get_linker_section (abfd, ".rela.plt");
2079 htab->srelgot = bfd_get_linker_section (abfd, ".rela.got");
2081 htab->sdynbss = bfd_get_linker_section (abfd, ".dynbss");
2082 htab->srelbss = bfd_get_linker_section (abfd, ".rela.bss");
2087 /* Look through the relocs for a section during the first phase, and
2088 calculate needed space in the global offset table, procedure linkage
2089 table, and dynamic reloc sections. At this point we haven't
2090 necessarily read all the input files. */
2093 elf_metag_check_relocs (bfd *abfd,
2094 struct bfd_link_info *info,
2096 const Elf_Internal_Rela *relocs)
2098 Elf_Internal_Shdr *symtab_hdr;
2099 struct elf_link_hash_entry **eh_syms;
2100 const Elf_Internal_Rela *rel;
2101 const Elf_Internal_Rela *rel_end;
2102 struct elf_metag_link_hash_table *htab;
2105 int tls_type = GOT_UNKNOWN, old_tls_type = GOT_UNKNOWN;
2107 if (info->relocatable)
2110 htab = metag_link_hash_table (info);
2111 dynobj = htab->etab.dynobj;
2112 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2113 eh_syms = elf_sym_hashes (abfd);
2119 rel_end = relocs + sec->reloc_count;
2120 for (rel = relocs; rel < rel_end; rel++)
2123 struct elf_metag_link_hash_entry *hh;
2124 Elf_Internal_Sym *isym;
2125 unsigned long r_symndx;
2127 r_symndx = ELF32_R_SYM (rel->r_info);
2128 r_type = ELF32_R_TYPE (rel->r_info);
2129 if (r_symndx < symtab_hdr->sh_info)
2131 /* A local symbol. */
2132 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2143 hh = (struct elf_metag_link_hash_entry *)
2144 eh_syms[r_symndx - symtab_hdr->sh_info];
2145 while (hh->eh.root.type == bfd_link_hash_indirect
2146 || hh->eh.root.type == bfd_link_hash_warning)
2147 hh = (struct elf_metag_link_hash_entry *) hh->eh.root.u.i.link;
2149 /* PR15323, ref flags aren't set for references in the same
2151 hh->eh.root.non_ir_ref = 1;
2154 /* Some relocs require a global offset table. */
2155 if (htab->sgot == NULL)
2159 case R_METAG_TLS_GD:
2160 case R_METAG_TLS_LDM:
2161 case R_METAG_TLS_IE:
2163 info->flags |= DF_STATIC_TLS;
2166 case R_METAG_HI16_GOTOFF:
2167 case R_METAG_LO16_GOTOFF:
2168 case R_METAG_GETSET_GOTOFF:
2169 case R_METAG_GETSET_GOT:
2170 case R_METAG_HI16_GOTPC:
2171 case R_METAG_LO16_GOTPC:
2173 htab->etab.dynobj = dynobj = abfd;
2174 if (!elf_metag_create_dynamic_sections (dynobj, info))
2185 case R_METAG_TLS_IE:
2186 case R_METAG_TLS_GD:
2187 case R_METAG_GETSET_GOT:
2191 tls_type = GOT_NORMAL;
2193 case R_METAG_TLS_IE:
2194 tls_type = GOT_TLS_IE;
2196 case R_METAG_TLS_GD:
2197 tls_type = GOT_TLS_GD;
2203 hh->eh.got.refcount += 1;
2204 old_tls_type = hh->tls_type;
2208 bfd_signed_vma *local_got_refcounts;
2210 /* This is a global offset table entry for a local
2212 local_got_refcounts = elf_local_got_refcounts (abfd);
2213 if (local_got_refcounts == NULL)
2217 size = symtab_hdr->sh_info;
2218 size *= sizeof (bfd_signed_vma);
2219 /* Add in space to store the local GOT TLS types. */
2220 size += symtab_hdr->sh_info;
2221 local_got_refcounts = ((bfd_signed_vma *)
2222 bfd_zalloc (abfd, size));
2223 if (local_got_refcounts == NULL)
2225 elf_local_got_refcounts (abfd) = local_got_refcounts;
2226 memset (metag_elf_local_got_tls_type (abfd),
2227 GOT_UNKNOWN, symtab_hdr->sh_info);
2229 local_got_refcounts[r_symndx] += 1;
2230 old_tls_type = metag_elf_local_got_tls_type (abfd) [r_symndx];
2233 if (old_tls_type != tls_type)
2237 hh->tls_type = tls_type;
2241 metag_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
2247 case R_METAG_TLS_LDM:
2248 metag_link_hash_table (info)->tls_ldm_got.refcount += 1;
2251 case R_METAG_RELBRANCH_PLT:
2252 /* This symbol requires a procedure linkage table entry. We
2253 actually build the entry in adjust_dynamic_symbol,
2254 because this might be a case of linking PIC code without
2255 linking in any dynamic objects, in which case we don't
2256 need to generate a procedure linkage table after all. */
2258 /* If this is a local symbol, we resolve it directly without
2259 creating a procedure linkage table entry. */
2263 if (hh->eh.forced_local)
2266 hh->eh.needs_plt = 1;
2267 hh->eh.plt.refcount += 1;
2270 case R_METAG_HIADDR16:
2271 case R_METAG_LOADDR16:
2272 /* Let's help debug shared library creation. These relocs
2273 cannot be used in shared libs. Don't error out for
2274 sections we don't care about, such as debug sections or
2275 non-constant sections. */
2277 && (sec->flags & SEC_ALLOC) != 0
2278 && (sec->flags & SEC_READONLY) != 0)
2283 name = hh->eh.root.root.string;
2285 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
2286 (*_bfd_error_handler)
2287 (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"),
2288 abfd, elf_metag_howto_table[r_type].name, name);
2289 bfd_set_error (bfd_error_bad_value);
2294 case R_METAG_ADDR32:
2295 case R_METAG_RELBRANCH:
2296 case R_METAG_GETSETOFF:
2297 if (hh != NULL && !info->shared)
2299 hh->eh.non_got_ref = 1;
2300 hh->eh.plt.refcount += 1;
2303 /* If we are creating a shared library, and this is a reloc
2304 against a global symbol, or a non PC relative reloc
2305 against a local symbol, then we need to copy the reloc
2306 into the shared library. However, if we are linking with
2307 -Bsymbolic, we do not need to copy a reloc against a
2308 global symbol which is defined in an object we are
2309 including in the link (i.e., DEF_REGULAR is set). At
2310 this point we have not seen all the input files, so it is
2311 possible that DEF_REGULAR is not set now but will be set
2312 later (it is never cleared). We account for that
2313 possibility below by storing information in the
2314 dyn_relocs field of the hash table entry. A similar
2315 situation occurs when creating shared libraries and symbol
2316 visibility changes render the symbol local.
2318 If on the other hand, we are creating an executable, we
2319 may need to keep relocations for symbols satisfied by a
2320 dynamic library if we manage to avoid copy relocs for the
2323 && (sec->flags & SEC_ALLOC) != 0
2324 && (r_type != R_METAG_RELBRANCH
2326 && (! info->symbolic
2327 || hh->eh.root.type == bfd_link_hash_defweak
2328 || !hh->eh.def_regular))))
2330 && (sec->flags & SEC_ALLOC) != 0
2332 && (hh->eh.root.type == bfd_link_hash_defweak
2333 || !hh->eh.def_regular)))
2335 struct elf_metag_dyn_reloc_entry *hdh_p;
2336 struct elf_metag_dyn_reloc_entry **hdh_head;
2339 htab->etab.dynobj = dynobj = abfd;
2341 /* When creating a shared object, we must copy these
2342 relocs into the output file. We create a reloc
2343 section in dynobj and make room for the reloc. */
2346 sreloc = _bfd_elf_make_dynamic_reloc_section
2347 (sec, htab->etab.dynobj, 2, abfd, /*rela?*/ TRUE);
2351 bfd_set_error (bfd_error_bad_value);
2355 elf_section_data (sec)->sreloc = sreloc;
2358 /* If this is a global symbol, we count the number of
2359 relocations we need for this symbol. */
2361 hdh_head = &((struct elf_metag_link_hash_entry *) hh)->dyn_relocs;
2364 /* Track dynamic relocs needed for local syms too. */
2368 sr = bfd_section_from_elf_index (abfd, isym->st_shndx);
2372 vpp = &elf_section_data (sr)->local_dynrel;
2373 hdh_head = (struct elf_metag_dyn_reloc_entry **) vpp;
2377 if (hdh_p == NULL || hdh_p->sec != sec)
2379 hdh_p = ((struct elf_metag_dyn_reloc_entry *)
2380 bfd_alloc (dynobj, sizeof *hdh_p));
2383 hdh_p->hdh_next = *hdh_head;
2387 hdh_p->relative_count = 0;
2391 if (ELF32_R_TYPE (rel->r_info) == R_METAG_RELBRANCH)
2392 hdh_p->relative_count += 1;
2396 /* This relocation describes the C++ object vtable hierarchy.
2397 Reconstruct it for later use during GC. */
2398 case R_METAG_GNU_VTINHERIT:
2399 if (!bfd_elf_gc_record_vtinherit (abfd, sec, &hh->eh,
2404 /* This relocation describes which C++ vtable entries are actually
2405 used. Record for later use during GC. */
2406 case R_METAG_GNU_VTENTRY:
2407 BFD_ASSERT (hh != NULL);
2409 && !bfd_elf_gc_record_vtentry (abfd, sec, &hh->eh, rel->r_addend))
2418 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2421 elf_metag_copy_indirect_symbol (struct bfd_link_info *info,
2422 struct elf_link_hash_entry *eh_dir,
2423 struct elf_link_hash_entry *eh_ind)
2425 struct elf_metag_link_hash_entry *hh_dir, *hh_ind;
2427 hh_dir = metag_elf_hash_entry (eh_dir);
2428 hh_ind = metag_elf_hash_entry (eh_ind);
2430 if (hh_ind->dyn_relocs != NULL)
2432 if (hh_dir->dyn_relocs != NULL)
2434 struct elf_metag_dyn_reloc_entry **hdh_pp;
2435 struct elf_metag_dyn_reloc_entry *hdh_p;
2437 if (eh_ind->root.type == bfd_link_hash_indirect)
2440 /* Add reloc counts against the weak sym to the strong sym
2441 list. Merge any entries against the same section. */
2442 for (hdh_pp = &hh_ind->dyn_relocs; (hdh_p = *hdh_pp) != NULL; )
2444 struct elf_metag_dyn_reloc_entry *hdh_q;
2446 for (hdh_q = hh_dir->dyn_relocs; hdh_q != NULL;
2447 hdh_q = hdh_q->hdh_next)
2448 if (hdh_q->sec == hdh_p->sec)
2450 hdh_q->relative_count += hdh_p->relative_count;
2451 hdh_q->count += hdh_p->count;
2452 *hdh_pp = hdh_p->hdh_next;
2456 hdh_pp = &hdh_p->hdh_next;
2458 *hdh_pp = hh_dir->dyn_relocs;
2461 hh_dir->dyn_relocs = hh_ind->dyn_relocs;
2462 hh_ind->dyn_relocs = NULL;
2465 if (eh_ind->root.type == bfd_link_hash_indirect
2466 && eh_dir->got.refcount <= 0)
2468 hh_dir->tls_type = hh_ind->tls_type;
2469 hh_ind->tls_type = GOT_UNKNOWN;
2472 _bfd_elf_link_hash_copy_indirect (info, eh_dir, eh_ind);
2475 /* Adjust a symbol defined by a dynamic object and referenced by a
2476 regular object. The current definition is in some section of the
2477 dynamic object, but we're not including those sections. We have to
2478 change the definition to something the rest of the link can
2482 elf_metag_adjust_dynamic_symbol (struct bfd_link_info *info,
2483 struct elf_link_hash_entry *eh)
2485 struct elf_metag_link_hash_table *htab;
2486 struct elf_metag_link_hash_entry *hh;
2487 struct elf_metag_dyn_reloc_entry *hdh_p;
2490 /* If this is a function, put it in the procedure linkage table. We
2491 will fill in the contents of the procedure linkage table later,
2492 when we know the address of the .got section. */
2493 if (eh->type == STT_FUNC
2496 if (eh->plt.refcount <= 0
2497 || SYMBOL_CALLS_LOCAL (info, eh)
2498 || (ELF_ST_VISIBILITY (eh->other) != STV_DEFAULT
2499 && eh->root.type == bfd_link_hash_undefweak))
2501 /* This case can occur if we saw a PLT reloc in an input
2502 file, but the symbol was never referred to by a dynamic
2503 object. In such a case, we don't actually need to build
2504 a procedure linkage table, and we can just do a PCREL
2506 eh->plt.offset = (bfd_vma) -1;
2513 eh->plt.offset = (bfd_vma) -1;
2515 /* If this is a weak symbol, and there is a real definition, the
2516 processor independent code will have arranged for us to see the
2517 real definition first, and we can just use the same value. */
2518 if (eh->u.weakdef != NULL)
2520 if (eh->u.weakdef->root.type != bfd_link_hash_defined
2521 && eh->u.weakdef->root.type != bfd_link_hash_defweak)
2523 eh->root.u.def.section = eh->u.weakdef->root.u.def.section;
2524 eh->root.u.def.value = eh->u.weakdef->root.u.def.value;
2525 eh->non_got_ref = eh->u.weakdef->non_got_ref;
2529 /* This is a reference to a symbol defined by a dynamic object which
2530 is not a function. */
2532 /* If we are creating a shared library, we must presume that the
2533 only references to the symbol are via the global offset table.
2534 For such cases we need not do anything here; the relocations will
2535 be handled correctly by relocate_section. */
2539 /* If there are no references to this symbol that do not use the
2540 GOT, we don't need to generate a copy reloc. */
2541 if (!eh->non_got_ref)
2544 /* If -z nocopyreloc was given, we won't generate them either. */
2545 if (info->nocopyreloc)
2547 eh->non_got_ref = 0;
2551 hh = (struct elf_metag_link_hash_entry *) eh;
2552 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
2554 s = hdh_p->sec->output_section;
2555 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2559 /* If we didn't find any dynamic relocs in read-only sections, then
2560 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2563 eh->non_got_ref = 0;
2567 /* We must allocate the symbol in our .dynbss section, which will
2568 become part of the .bss section of the executable. There will be
2569 an entry for this symbol in the .dynsym section. The dynamic
2570 object will contain position independent code, so all references
2571 from the dynamic object to this symbol will go through the global
2572 offset table. The dynamic linker will use the .dynsym entry to
2573 determine the address it must put in the global offset table, so
2574 both the dynamic object and the regular object will refer to the
2575 same memory location for the variable. */
2577 htab = metag_link_hash_table (info);
2579 /* We must generate a COPY reloc to tell the dynamic linker to
2580 copy the initial value out of the dynamic object and into the
2581 runtime process image. */
2582 if ((eh->root.u.def.section->flags & SEC_ALLOC) != 0 && eh->size != 0)
2584 htab->srelbss->size += sizeof (Elf32_External_Rela);
2590 return _bfd_elf_adjust_dynamic_copy (eh, s);
2593 /* Allocate space in .plt, .got and associated reloc sections for
2597 allocate_dynrelocs (struct elf_link_hash_entry *eh, void *inf)
2599 struct bfd_link_info *info;
2600 struct elf_metag_link_hash_table *htab;
2601 struct elf_metag_link_hash_entry *hh;
2602 struct elf_metag_dyn_reloc_entry *hdh_p;
2604 if (eh->root.type == bfd_link_hash_indirect)
2607 if (eh->root.type == bfd_link_hash_warning)
2608 eh = (struct elf_link_hash_entry *) eh->root.u.i.link;
2611 htab = metag_link_hash_table (info);
2613 if (htab->etab.dynamic_sections_created
2614 && eh->plt.refcount > 0)
2616 /* Make sure this symbol is output as a dynamic symbol.
2617 Undefined weak syms won't yet be marked as dynamic. */
2618 if (eh->dynindx == -1
2619 && !eh->forced_local)
2621 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2625 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, eh))
2627 asection *s = htab->splt;
2629 /* If this is the first .plt entry, make room for the special
2632 s->size += PLT_ENTRY_SIZE;
2634 eh->plt.offset = s->size;
2636 /* If this symbol is not defined in a regular file, and we are
2637 not generating a shared library, then set the symbol to this
2638 location in the .plt. This is required to make function
2639 pointers compare as equal between the normal executable and
2640 the shared library. */
2642 && !eh->def_regular)
2644 eh->root.u.def.section = s;
2645 eh->root.u.def.value = eh->plt.offset;
2648 /* Make room for this entry. */
2649 s->size += PLT_ENTRY_SIZE;
2651 /* We also need to make an entry in the .got.plt section, which
2652 will be placed in the .got section by the linker script. */
2653 htab->sgotplt->size += 4;
2655 /* We also need to make an entry in the .rel.plt section. */
2656 htab->srelplt->size += sizeof (Elf32_External_Rela);
2660 eh->plt.offset = (bfd_vma) -1;
2666 eh->plt.offset = (bfd_vma) -1;
2670 if (eh->got.refcount > 0)
2674 int tls_type = metag_elf_hash_entry (eh)->tls_type;
2676 /* Make sure this symbol is output as a dynamic symbol.
2677 Undefined weak syms won't yet be marked as dynamic. */
2678 if (eh->dynindx == -1
2679 && !eh->forced_local)
2681 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2687 eh->got.offset = s->size;
2689 /* R_METAG_TLS_GD needs 2 consecutive GOT slots. */
2690 if (tls_type == GOT_TLS_GD)
2692 dyn = htab->etab.dynamic_sections_created;
2693 /* R_METAG_TLS_IE needs one dynamic relocation if dynamic,
2694 R_METAG_TLS_GD needs one if local symbol and two if global. */
2695 if ((tls_type == GOT_TLS_GD && eh->dynindx == -1)
2696 || (tls_type == GOT_TLS_IE && dyn))
2697 htab->srelgot->size += sizeof (Elf32_External_Rela);
2698 else if (tls_type == GOT_TLS_GD)
2699 htab->srelgot->size += 2 * sizeof (Elf32_External_Rela);
2700 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, eh))
2701 htab->srelgot->size += sizeof (Elf32_External_Rela);
2704 eh->got.offset = (bfd_vma) -1;
2706 hh = (struct elf_metag_link_hash_entry *) eh;
2707 if (hh->dyn_relocs == NULL)
2710 /* If this is a -Bsymbolic shared link, then we need to discard all
2711 space allocated for dynamic pc-relative relocs against symbols
2712 defined in a regular object. For the normal shared case, discard
2713 space for relocs that have become local due to symbol visibility
2717 if (SYMBOL_CALLS_LOCAL (info, eh))
2719 struct elf_metag_dyn_reloc_entry **hdh_pp;
2721 for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL; )
2723 hdh_p->count -= hdh_p->relative_count;
2724 hdh_p->relative_count = 0;
2725 if (hdh_p->count == 0)
2726 *hdh_pp = hdh_p->hdh_next;
2728 hdh_pp = &hdh_p->hdh_next;
2732 /* Also discard relocs on undefined weak syms with non-default
2734 if (hh->dyn_relocs != NULL
2735 && eh->root.type == bfd_link_hash_undefweak)
2737 if (ELF_ST_VISIBILITY (eh->other) != STV_DEFAULT)
2738 hh->dyn_relocs = NULL;
2740 /* Make sure undefined weak symbols are output as a dynamic
2742 else if (eh->dynindx == -1
2743 && !eh->forced_local)
2745 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2752 /* For the non-shared case, discard space for relocs against
2753 symbols which turn out to need copy relocs or are not
2755 if (!eh->non_got_ref
2756 && ((eh->def_dynamic
2757 && !eh->def_regular)
2758 || (htab->etab.dynamic_sections_created
2759 && (eh->root.type == bfd_link_hash_undefweak
2760 || eh->root.type == bfd_link_hash_undefined))))
2762 /* Make sure this symbol is output as a dynamic symbol.
2763 Undefined weak syms won't yet be marked as dynamic. */
2764 if (eh->dynindx == -1
2765 && !eh->forced_local)
2767 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2771 /* If that succeeded, we know we'll be keeping all the
2773 if (eh->dynindx != -1)
2777 hh->dyn_relocs = NULL;
2783 /* Finally, allocate space. */
2784 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
2786 asection *sreloc = elf_section_data (hdh_p->sec)->sreloc;
2787 sreloc->size += hdh_p->count * sizeof (Elf32_External_Rela);
2793 /* Find any dynamic relocs that apply to read-only sections. */
2796 readonly_dynrelocs (struct elf_link_hash_entry *eh, void *inf)
2798 struct elf_metag_link_hash_entry *hh;
2799 struct elf_metag_dyn_reloc_entry *hdh_p;
2801 if (eh->root.type == bfd_link_hash_warning)
2802 eh = (struct elf_link_hash_entry *) eh->root.u.i.link;
2804 hh = (struct elf_metag_link_hash_entry *) eh;
2805 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
2807 asection *s = hdh_p->sec->output_section;
2809 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2811 struct bfd_link_info *info = inf;
2813 info->flags |= DF_TEXTREL;
2815 /* Not an error, just cut short the traversal. */
2822 /* Set the sizes of the dynamic sections. */
2825 elf_metag_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2826 struct bfd_link_info *info)
2828 struct elf_metag_link_hash_table *htab;
2834 htab = metag_link_hash_table (info);
2835 dynobj = htab->etab.dynobj;
2839 if (htab->etab.dynamic_sections_created)
2841 /* Set the contents of the .interp section to the interpreter. */
2842 if (info->executable)
2844 s = bfd_get_linker_section (dynobj, ".interp");
2847 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2848 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2852 /* Set up .got offsets for local syms, and space for local dynamic
2854 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2856 bfd_signed_vma *local_got;
2857 bfd_signed_vma *end_local_got;
2858 bfd_size_type locsymcount;
2859 Elf_Internal_Shdr *symtab_hdr;
2861 char *local_tls_type;
2863 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2866 for (s = ibfd->sections; s != NULL; s = s->next)
2868 struct elf_metag_dyn_reloc_entry *hdh_p;
2870 for (hdh_p = ((struct elf_metag_dyn_reloc_entry *)
2871 elf_section_data (s)->local_dynrel);
2873 hdh_p = hdh_p->hdh_next)
2875 if (!bfd_is_abs_section (hdh_p->sec)
2876 && bfd_is_abs_section (hdh_p->sec->output_section))
2878 /* Input section has been discarded, either because
2879 it is a copy of a linkonce section or due to
2880 linker script /DISCARD/, so we'll be discarding
2883 else if (hdh_p->count != 0)
2885 srel = elf_section_data (hdh_p->sec)->sreloc;
2886 srel->size += hdh_p->count * sizeof (Elf32_External_Rela);
2887 if ((hdh_p->sec->output_section->flags & SEC_READONLY) != 0)
2888 info->flags |= DF_TEXTREL;
2893 local_got = elf_local_got_refcounts (ibfd);
2897 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2898 locsymcount = symtab_hdr->sh_info;
2899 end_local_got = local_got + locsymcount;
2900 local_tls_type = metag_elf_local_got_tls_type (ibfd);
2902 srel = htab->srelgot;
2903 for (; local_got < end_local_got; ++local_got)
2907 *local_got = s->size;
2908 s->size += GOT_ENTRY_SIZE;
2909 /* R_METAG_TLS_GD relocs need 2 consecutive GOT entries. */
2910 if (*local_tls_type == GOT_TLS_GD)
2913 srel->size += sizeof (Elf32_External_Rela);
2916 *local_got = (bfd_vma) -1;
2921 if (htab->tls_ldm_got.refcount > 0)
2923 /* Allocate 2 got entries and 1 dynamic reloc for R_METAG_TLS_LDM
2925 htab->tls_ldm_got.offset = htab->sgot->size;
2926 htab->sgot->size += 8;
2927 htab->srelgot->size += sizeof (Elf32_External_Rela);
2930 htab->tls_ldm_got.offset = -1;
2932 /* Allocate global sym .plt and .got entries, and space for global
2933 sym dynamic relocs. */
2934 elf_link_hash_traverse (&htab->etab, allocate_dynrelocs, info);
2936 /* We now have determined the sizes of the various dynamic sections.
2937 Allocate memory for them. */
2939 for (s = dynobj->sections; s != NULL; s = s->next)
2941 bfd_boolean reloc_section = FALSE;
2943 if ((s->flags & SEC_LINKER_CREATED) == 0)
2948 || s == htab->sgotplt
2949 || s == htab->sdynbss)
2951 /* Strip this section if we don't need it; see the
2954 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2956 if (s->size != 0 && s != htab->srelplt)
2959 /* We use the reloc_count field as a counter if we need
2960 to copy relocs into the output file. */
2962 reloc_section = TRUE;
2966 /* It's not one of our sections, so don't allocate space. */
2972 /* If we don't need this section, strip it from the
2973 output file. This is mostly to handle .rela.bss and
2974 .rela.plt. We must create both sections in
2975 create_dynamic_sections, because they must be created
2976 before the linker maps input sections to output
2977 sections. The linker does that before
2978 adjust_dynamic_symbol is called, and it is that
2979 function which decides whether anything needs to go
2980 into these sections. */
2981 s->flags |= SEC_EXCLUDE;
2985 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2988 /* Allocate memory for the section contents. */
2989 s->contents = bfd_zalloc (dynobj, s->size);
2990 if (s->contents == NULL)
2992 else if (reloc_section)
2994 unsigned char *contents = s->contents;
2995 Elf32_External_Rela reloc;
2997 /* Fill the reloc section with a R_METAG_NONE type reloc. */
2998 memset(&reloc, 0, sizeof(Elf32_External_Rela));
2999 reloc.r_info[0] = R_METAG_NONE;
3000 for (; contents < (s->contents + s->size);
3001 contents += sizeof(Elf32_External_Rela))
3003 memcpy(contents, &reloc, sizeof(Elf32_External_Rela));
3008 if (htab->etab.dynamic_sections_created)
3010 /* Add some entries to the .dynamic section. We fill in the
3011 values later, in elf_metag_finish_dynamic_sections, but we
3012 must add the entries now so that we get the correct size for
3013 the .dynamic section. The DT_DEBUG entry is filled in by the
3014 dynamic linker and used by the debugger. */
3015 #define add_dynamic_entry(TAG, VAL) \
3016 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3018 if (!add_dynamic_entry (DT_PLTGOT, 0))
3021 if (info->executable)
3023 if (!add_dynamic_entry (DT_DEBUG, 0))
3027 if (htab->srelplt->size != 0)
3029 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3030 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3031 || !add_dynamic_entry (DT_JMPREL, 0))
3037 if (!add_dynamic_entry (DT_RELA, 0)
3038 || !add_dynamic_entry (DT_RELASZ, 0)
3039 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3042 /* If any dynamic relocs apply to a read-only section,
3043 then we need a DT_TEXTREL entry. */
3044 if ((info->flags & DF_TEXTREL) == 0)
3045 elf_link_hash_traverse (&htab->etab, readonly_dynrelocs, info);
3047 if ((info->flags & DF_TEXTREL) != 0)
3049 if (!add_dynamic_entry (DT_TEXTREL, 0))
3054 #undef add_dynamic_entry
3059 /* Finish up dynamic symbol handling. We set the contents of various
3060 dynamic sections here. */
3063 elf_metag_finish_dynamic_symbol (bfd *output_bfd,
3064 struct bfd_link_info *info,
3065 struct elf_link_hash_entry *eh,
3066 Elf_Internal_Sym *sym)
3068 struct elf_metag_link_hash_table *htab;
3069 Elf_Internal_Rela rel;
3072 htab = metag_link_hash_table (info);
3074 if (eh->plt.offset != (bfd_vma) -1)
3084 if (eh->plt.offset & 1)
3087 BFD_ASSERT (eh->dynindx != -1);
3090 sgot = htab->sgotplt;
3091 srela = htab->srelplt;
3092 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
3094 /* Get the index in the procedure linkage table which
3095 corresponds to this symbol. This is the index of this symbol
3096 in all the symbols for which we are making plt entries. The
3097 first entry in the procedure linkage table is reserved. */
3098 plt_index = eh->plt.offset / PLT_ENTRY_SIZE - 1;
3100 /* Get the offset into the .got.plt table of the entry that
3101 corresponds to this function. */
3102 got_offset = plt_index * GOT_ENTRY_SIZE;
3104 BFD_ASSERT (got_offset < (1 << 16));
3106 got_entry = sgot->output_section->vma
3107 + sgot->output_offset
3110 BFD_ASSERT (plt_index < (1 << 16));
3112 /* Fill in the entry in the procedure linkage table. */
3115 bfd_put_32 (output_bfd,
3117 | (((got_entry >> 16) & 0xffff) << 3)),
3118 splt->contents + eh->plt.offset);
3119 bfd_put_32 (output_bfd,
3121 | ((got_entry & 0xffff) << 3)),
3122 splt->contents + eh->plt.offset + 4);
3123 bfd_put_32 (output_bfd, plt_entry[2],
3124 splt->contents + eh->plt.offset + 8);
3125 bfd_put_32 (output_bfd,
3126 (plt_entry[3] | (plt_index << 3)),
3127 splt->contents + eh->plt.offset + 12);
3128 bfd_put_32 (output_bfd,
3130 | ((((unsigned int) ((- (eh->plt.offset + 16)) >> 2)) & 0x7ffff) << 5)),
3131 splt->contents + eh->plt.offset + 16);
3135 bfd_vma addr = got_entry - (splt->output_section->vma +
3136 splt->output_offset + eh->plt.offset);
3138 bfd_put_32 (output_bfd,
3139 plt_pic_entry[0] | (((addr >> 16) & 0xffff) << 3),
3140 splt->contents + eh->plt.offset);
3141 bfd_put_32 (output_bfd,
3142 plt_pic_entry[1] | ((addr & 0xffff) << 3),
3143 splt->contents + eh->plt.offset + 4);
3144 bfd_put_32 (output_bfd, plt_pic_entry[2],
3145 splt->contents + eh->plt.offset + 8);
3146 bfd_put_32 (output_bfd,
3147 (plt_pic_entry[3] | (plt_index << 3)),
3148 splt->contents + eh->plt.offset + 12);
3149 bfd_put_32 (output_bfd,
3151 + ((((unsigned int) ((- (eh->plt.offset + 16)) >> 2)) & 0x7ffff) << 5)),
3152 splt->contents + eh->plt.offset + 16);
3155 /* Fill in the entry in the global offset table. */
3156 bfd_put_32 (output_bfd,
3157 (splt->output_section->vma
3158 + splt->output_offset
3160 + 12), /* offset within PLT entry */
3161 sgot->contents + got_offset);
3163 /* Fill in the entry in the .rela.plt section. */
3164 rel.r_offset = (sgot->output_section->vma
3165 + sgot->output_offset
3167 rel.r_info = ELF32_R_INFO (eh->dynindx, R_METAG_JMP_SLOT);
3169 loc = htab->srelplt->contents;
3170 loc += plt_index * sizeof(Elf32_External_Rela);
3171 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
3173 if (!eh->def_regular)
3175 /* Mark the symbol as undefined, rather than as defined in
3176 the .plt section. Leave the value alone. */
3177 sym->st_shndx = SHN_UNDEF;
3181 if (eh->got.offset != (bfd_vma) -1
3182 && (metag_elf_hash_entry (eh)->tls_type & GOT_TLS_GD) == 0
3183 && (metag_elf_hash_entry (eh)->tls_type & GOT_TLS_IE) == 0)
3185 /* This symbol has an entry in the global offset table. Set it
3188 rel.r_offset = ((eh->got.offset &~ (bfd_vma) 1)
3189 + htab->sgot->output_offset
3190 + htab->sgot->output_section->vma);
3192 /* If this is a -Bsymbolic link and the symbol is defined
3193 locally or was forced to be local because of a version file,
3194 we just want to emit a RELATIVE reloc. The entry in the
3195 global offset table will already have been initialized in the
3196 relocate_section function. */
3198 && (info->symbolic || eh->dynindx == -1)
3201 rel.r_info = ELF32_R_INFO (0, R_METAG_RELATIVE);
3202 rel.r_addend = (eh->root.u.def.value
3203 + eh->root.u.def.section->output_offset
3204 + eh->root.u.def.section->output_section->vma);
3208 if ((eh->got.offset & 1) != 0)
3210 bfd_put_32 (output_bfd, 0, htab->sgot->contents + eh->got.offset);
3211 rel.r_info = ELF32_R_INFO (eh->dynindx, R_METAG_GLOB_DAT);
3215 loc = htab->srelgot->contents;
3216 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
3217 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
3224 /* This symbol needs a copy reloc. Set it up. */
3226 if (! (eh->dynindx != -1
3227 && (eh->root.type == bfd_link_hash_defined
3228 || eh->root.type == bfd_link_hash_defweak)))
3233 rel.r_offset = (eh->root.u.def.value
3234 + eh->root.u.def.section->output_offset
3235 + eh->root.u.def.section->output_section->vma);
3237 rel.r_info = ELF32_R_INFO (eh->dynindx, R_METAG_COPY);
3238 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
3239 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
3242 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
3243 if (eh->root.root.string[0] == '_'
3244 && (strcmp (eh->root.root.string, "_DYNAMIC") == 0
3245 || eh == htab->etab.hgot))
3247 sym->st_shndx = SHN_ABS;
3253 /* Set the Meta ELF ABI version. */
3256 elf_metag_post_process_headers (bfd * abfd, struct bfd_link_info * link_info)
3258 Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */
3260 _bfd_elf_post_process_headers (abfd, link_info);
3261 i_ehdrp = elf_elfheader (abfd);
3262 i_ehdrp->e_ident[EI_ABIVERSION] = METAG_ELF_ABI_VERSION;
3265 /* Used to decide how to sort relocs in an optimal manner for the
3266 dynamic linker, before writing them out. */
3268 static enum elf_reloc_type_class
3269 elf_metag_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3270 const asection *rel_sec ATTRIBUTE_UNUSED,
3271 const Elf_Internal_Rela *rela)
3273 switch ((int) ELF32_R_TYPE (rela->r_info))
3275 case R_METAG_RELATIVE:
3276 return reloc_class_relative;
3277 case R_METAG_JMP_SLOT:
3278 return reloc_class_plt;
3280 return reloc_class_copy;
3282 return reloc_class_normal;
3286 /* Finish up the dynamic sections. */
3289 elf_metag_finish_dynamic_sections (bfd *output_bfd,
3290 struct bfd_link_info *info)
3293 struct elf_metag_link_hash_table *htab;
3296 htab = metag_link_hash_table (info);
3297 dynobj = htab->etab.dynobj;
3299 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
3301 if (htab->etab.dynamic_sections_created)
3304 Elf32_External_Dyn *dyncon, *dynconend;
3309 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3310 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3311 for (; dyncon < dynconend; dyncon++)
3313 Elf_Internal_Dyn dyn;
3316 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3324 s = htab->sgot->output_section;
3325 BFD_ASSERT (s != NULL);
3326 dyn.d_un.d_ptr = s->vma + htab->sgot->output_offset;
3327 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3331 s = htab->srelplt->output_section;
3332 BFD_ASSERT (s != NULL);
3333 dyn.d_un.d_ptr = s->vma;
3334 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3339 dyn.d_un.d_val = s->size;
3340 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3344 /* Don't count procedure linkage table relocs in the
3345 overall reloc count. */
3346 if (htab->srelplt) {
3348 dyn.d_un.d_val -= s->size;
3350 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3354 /* We may not be using the standard ELF linker script.
3355 If .rela.plt is the first .rela section, we adjust
3356 DT_RELA to not include it. */
3357 if (htab->srelplt) {
3359 if (dyn.d_un.d_ptr == s->output_section->vma + s->output_offset)
3360 dyn.d_un.d_ptr += s->size;
3362 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3368 /* Fill in the first entry in the procedure linkage table. */
3370 if (splt && splt->size > 0)
3373 /* addr = .got + 4 */
3374 addr = htab->sgot->output_section->vma +
3375 htab->sgot->output_offset + 4;
3378 addr -= splt->output_section->vma + splt->output_offset;
3379 bfd_put_32 (output_bfd,
3380 plt0_pic_entry[0] | (((addr >> 16) & 0xffff) << 3),
3382 bfd_put_32 (output_bfd,
3383 plt0_pic_entry[1] | ((addr & 0xffff) << 3),
3384 splt->contents + 4);
3385 bfd_put_32 (output_bfd, plt0_pic_entry[2], splt->contents + 8);
3386 bfd_put_32 (output_bfd, plt0_pic_entry[3], splt->contents + 12);
3387 bfd_put_32 (output_bfd, plt0_pic_entry[4], splt->contents + 16);
3391 bfd_put_32 (output_bfd,
3392 plt0_entry[0] | (((addr >> 16) & 0xffff) << 3),
3394 bfd_put_32 (output_bfd,
3395 plt0_entry[1] | ((addr & 0xffff) << 3),
3396 splt->contents + 4);
3397 bfd_put_32 (output_bfd, plt0_entry[2], splt->contents + 8);
3398 bfd_put_32 (output_bfd, plt0_entry[3], splt->contents + 12);
3399 bfd_put_32 (output_bfd, plt0_entry[4], splt->contents + 16);
3402 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
3407 if (htab->sgot != NULL && htab->sgot->size != 0)
3409 /* Fill in the first entry in the global offset table.
3410 We use it to point to our dynamic section, if we have one. */
3411 bfd_put_32 (output_bfd,
3412 sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0,
3413 htab->sgot->contents);
3415 /* The second entry is reserved for use by the dynamic linker. */
3416 memset (htab->sgot->contents + GOT_ENTRY_SIZE, 0, GOT_ENTRY_SIZE);
3418 /* Set .got entry size. */
3419 elf_section_data (htab->sgot->output_section)
3420 ->this_hdr.sh_entsize = GOT_ENTRY_SIZE;
3426 /* Return the section that should be marked against GC for a given
3430 elf_metag_gc_mark_hook (asection *sec,
3431 struct bfd_link_info *info,
3432 Elf_Internal_Rela *rela,
3433 struct elf_link_hash_entry *hh,
3434 Elf_Internal_Sym *sym)
3437 switch ((unsigned int) ELF32_R_TYPE (rela->r_info))
3439 case R_METAG_GNU_VTINHERIT:
3440 case R_METAG_GNU_VTENTRY:
3444 return _bfd_elf_gc_mark_hook (sec, info, rela, hh, sym);
3447 /* Update the got and plt entry reference counts for the section being
3451 elf_metag_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED,
3452 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3453 asection *sec ATTRIBUTE_UNUSED,
3454 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
3456 Elf_Internal_Shdr *symtab_hdr;
3457 struct elf_link_hash_entry **eh_syms;
3458 bfd_signed_vma *local_got_refcounts;
3459 bfd_signed_vma *local_plt_refcounts;
3460 const Elf_Internal_Rela *rel, *relend;
3462 if (info->relocatable)
3465 elf_section_data (sec)->local_dynrel = NULL;
3467 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3468 eh_syms = elf_sym_hashes (abfd);
3469 local_got_refcounts = elf_local_got_refcounts (abfd);
3470 local_plt_refcounts = local_got_refcounts;
3471 if (local_plt_refcounts != NULL)
3472 local_plt_refcounts += symtab_hdr->sh_info;
3474 relend = relocs + sec->reloc_count;
3475 for (rel = relocs; rel < relend; rel++)
3477 unsigned long r_symndx;
3478 unsigned int r_type;
3479 struct elf_link_hash_entry *eh = NULL;
3481 r_symndx = ELF32_R_SYM (rel->r_info);
3482 if (r_symndx >= symtab_hdr->sh_info)
3484 struct elf_metag_link_hash_entry *hh;
3485 struct elf_metag_dyn_reloc_entry **hdh_pp;
3486 struct elf_metag_dyn_reloc_entry *hdh_p;
3488 eh = eh_syms[r_symndx - symtab_hdr->sh_info];
3489 while (eh->root.type == bfd_link_hash_indirect
3490 || eh->root.type == bfd_link_hash_warning)
3491 eh = (struct elf_link_hash_entry *) eh->root.u.i.link;
3492 hh = (struct elf_metag_link_hash_entry *) eh;
3494 for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL;
3495 hdh_pp = &hdh_p->hdh_next)
3496 if (hdh_p->sec == sec)
3498 /* Everything must go for SEC. */
3499 *hdh_pp = hdh_p->hdh_next;
3504 r_type = ELF32_R_TYPE (rel->r_info);
3507 case R_METAG_TLS_LDM:
3508 if (metag_link_hash_table (info)->tls_ldm_got.refcount > 0)
3509 metag_link_hash_table (info)->tls_ldm_got.refcount -= 1;
3511 case R_METAG_TLS_IE:
3512 case R_METAG_TLS_GD:
3513 case R_METAG_GETSET_GOT:
3516 if (eh->got.refcount > 0)
3517 eh->got.refcount -= 1;
3519 else if (local_got_refcounts != NULL)
3521 if (local_got_refcounts[r_symndx] > 0)
3522 local_got_refcounts[r_symndx] -= 1;
3526 case R_METAG_RELBRANCH_PLT:
3529 if (eh->plt.refcount > 0)
3530 eh->plt.refcount -= 1;
3534 case R_METAG_ADDR32:
3535 case R_METAG_HIADDR16:
3536 case R_METAG_LOADDR16:
3537 case R_METAG_GETSETOFF:
3538 case R_METAG_RELBRANCH:
3541 struct elf_metag_link_hash_entry *hh;
3542 struct elf_metag_dyn_reloc_entry **hdh_pp;
3543 struct elf_metag_dyn_reloc_entry *hdh_p;
3545 if (!info->shared && eh->plt.refcount > 0)
3546 eh->plt.refcount -= 1;
3548 hh = (struct elf_metag_link_hash_entry *) eh;
3550 for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL;
3551 hdh_pp = &hdh_p->hdh_next)
3552 if (hdh_p->sec == sec)
3554 if (ELF32_R_TYPE (rel->r_info) == R_METAG_RELBRANCH)
3555 hdh_p->relative_count -= 1;
3557 if (hdh_p->count == 0)
3558 *hdh_pp = hdh_p->hdh_next;
3572 /* Determine the type of stub needed, if any, for a call. */
3574 static enum elf_metag_stub_type
3575 metag_type_of_stub (asection *input_sec,
3576 const Elf_Internal_Rela *rel,
3577 struct elf_metag_link_hash_entry *hh,
3578 bfd_vma destination,
3579 struct bfd_link_info *info ATTRIBUTE_UNUSED)
3582 bfd_vma branch_offset;
3583 bfd_vma max_branch_offset;
3586 !(hh->eh.root.type == bfd_link_hash_defined
3587 || hh->eh.root.type == bfd_link_hash_defweak))
3588 return metag_stub_none;
3590 /* Determine where the call point is. */
3591 location = (input_sec->output_offset
3592 + input_sec->output_section->vma
3595 branch_offset = destination - location;
3597 /* Determine if a long branch stub is needed. Meta branch offsets
3598 are signed 19 bits 4 byte aligned. */
3599 max_branch_offset = (1 << (BRANCH_BITS-1)) << 2;
3601 if (branch_offset + max_branch_offset >= 2*max_branch_offset)
3604 return metag_stub_long_branch_shared;
3606 return metag_stub_long_branch;
3609 return metag_stub_none;
3612 #define MOVT_A0_3 0x82180005
3613 #define JUMP_A0_3 0xac180003
3615 #define MOVT_A1LBP 0x83080005
3616 #define ADD_A1LBP 0x83080000
3618 #define ADDT_A0_3_CPC 0x82980001
3619 #define ADD_A0_3_A0_3 0x82180000
3620 #define MOV_PC_A0_3 0xa3180ca0
3623 metag_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg ATTRIBUTE_UNUSED)
3625 struct elf_metag_stub_hash_entry *hsh;
3632 /* Massage our args to the form they really have. */
3633 hsh = (struct elf_metag_stub_hash_entry *) gen_entry;
3635 stub_sec = hsh->stub_sec;
3637 /* Make a note of the offset within the stubs for this entry. */
3638 hsh->stub_offset = stub_sec->size;
3639 loc = stub_sec->contents + hsh->stub_offset;
3641 stub_bfd = stub_sec->owner;
3643 switch (hsh->stub_type)
3645 case metag_stub_long_branch_shared:
3646 /* A PIC long branch stub is an ADDT and an ADD instruction used to
3647 calculate the jump target using A0.3 as a temporary. Then a MOV
3648 to PC carries out the jump. */
3649 sym_value = (hsh->target_value
3650 + hsh->target_section->output_offset
3651 + hsh->target_section->output_section->vma
3654 sym_value -= (hsh->stub_offset
3655 + stub_sec->output_offset
3656 + stub_sec->output_section->vma);
3658 bfd_put_32 (stub_bfd, ADDT_A0_3_CPC | (((sym_value >> 16) & 0xffff) << 3),
3661 bfd_put_32 (stub_bfd, ADD_A0_3_A0_3 | ((sym_value & 0xffff) << 3),
3664 bfd_put_32 (stub_bfd, MOV_PC_A0_3, loc + 8);
3668 case metag_stub_long_branch:
3669 /* A standard long branch stub is a MOVT instruction followed by a
3670 JUMP instruction using the A0.3 register as a temporary. This is
3671 the same method used by the LDLK linker (patch.c). */
3672 sym_value = (hsh->target_value
3673 + hsh->target_section->output_offset
3674 + hsh->target_section->output_section->vma
3677 bfd_put_32 (stub_bfd, MOVT_A0_3 | (((sym_value >> 16) & 0xffff) << 3),
3680 bfd_put_32 (stub_bfd, JUMP_A0_3 | ((sym_value & 0xffff) << 3), loc + 4);
3689 stub_sec->size += size;
3693 /* As above, but don't actually build the stub. Just bump offset so
3694 we know stub section sizes. */
3697 metag_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg ATTRIBUTE_UNUSED)
3699 struct elf_metag_stub_hash_entry *hsh;
3702 /* Massage our args to the form they really have. */
3703 hsh = (struct elf_metag_stub_hash_entry *) gen_entry;
3705 if (hsh->stub_type == metag_stub_long_branch)
3707 else if (hsh->stub_type == metag_stub_long_branch_shared)
3710 hsh->stub_sec->size += size;
3714 /* Set up various things so that we can make a list of input sections
3715 for each output section included in the link. Returns -1 on error,
3716 0 when no stubs will be needed, and 1 on success. */
3719 elf_metag_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info)
3722 unsigned int bfd_count;
3723 int top_id, top_index;
3725 asection **input_list, **list;
3727 struct elf_metag_link_hash_table *htab = metag_link_hash_table (info);
3729 /* Count the number of input BFDs and find the top input section id. */
3730 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
3732 input_bfd = input_bfd->link.next)
3735 for (section = input_bfd->sections;
3737 section = section->next)
3739 if (top_id < section->id)
3740 top_id = section->id;
3744 htab->bfd_count = bfd_count;
3746 amt = sizeof (struct map_stub) * (top_id + 1);
3747 htab->stub_group = bfd_zmalloc (amt);
3748 if (htab->stub_group == NULL)
3751 /* We can't use output_bfd->section_count here to find the top output
3752 section index as some sections may have been removed, and
3753 strip_excluded_output_sections doesn't renumber the indices. */
3754 for (section = output_bfd->sections, top_index = 0;
3756 section = section->next)
3758 if (top_index < section->index)
3759 top_index = section->index;
3762 htab->top_index = top_index;
3763 amt = sizeof (asection *) * (top_index + 1);
3764 input_list = bfd_malloc (amt);
3765 htab->input_list = input_list;
3766 if (input_list == NULL)
3769 /* For sections we aren't interested in, mark their entries with a
3770 value we can check later. */
3771 list = input_list + top_index;
3773 *list = bfd_abs_section_ptr;
3774 while (list-- != input_list);
3776 for (section = output_bfd->sections;
3778 section = section->next)
3780 /* FIXME: This is a bit of hack. Currently our .ctors and .dtors
3781 * have PC relative relocs in them but no code flag set. */
3782 if (((section->flags & SEC_CODE) != 0) ||
3783 strcmp(".ctors", section->name) ||
3784 strcmp(".dtors", section->name))
3785 input_list[section->index] = NULL;
3791 /* The linker repeatedly calls this function for each input section,
3792 in the order that input sections are linked into output sections.
3793 Build lists of input sections to determine groupings between which
3794 we may insert linker stubs. */
3797 elf_metag_next_input_section (struct bfd_link_info *info, asection *isec)
3799 struct elf_metag_link_hash_table *htab = metag_link_hash_table (info);
3801 if (isec->output_section->index <= htab->top_index)
3803 asection **list = htab->input_list + isec->output_section->index;
3804 if (*list != bfd_abs_section_ptr)
3806 /* Steal the link_sec pointer for our list. */
3807 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3808 /* This happens to make the list in reverse order,
3809 which is what we want. */
3810 PREV_SEC (isec) = *list;
3816 /* See whether we can group stub sections together. Grouping stub
3817 sections may result in fewer stubs. More importantly, we need to
3818 put all .init* and .fini* stubs at the beginning of the .init or
3819 .fini output sections respectively, because glibc splits the
3820 _init and _fini functions into multiple parts. Putting a stub in
3821 the middle of a function is not a good idea. */
3824 group_sections (struct elf_metag_link_hash_table *htab,
3825 bfd_size_type stub_group_size,
3826 bfd_boolean stubs_always_before_branch)
3828 asection **list = htab->input_list + htab->top_index;
3831 asection *tail = *list;
3832 if (tail == bfd_abs_section_ptr)
3834 while (tail != NULL)
3838 bfd_size_type total;
3839 bfd_boolean big_sec;
3843 big_sec = total >= stub_group_size;
3845 while ((prev = PREV_SEC (curr)) != NULL
3846 && ((total += curr->output_offset - prev->output_offset)
3850 /* OK, the size from the start of CURR to the end is less
3851 than stub_group_size bytes and thus can be handled by one stub
3852 section. (or the tail section is itself larger than
3853 stub_group_size bytes, in which case we may be toast.)
3854 We should really be keeping track of the total size of
3855 stubs added here, as stubs contribute to the final output
3859 prev = PREV_SEC (tail);
3860 /* Set up this stub group. */
3861 htab->stub_group[tail->id].link_sec = curr;
3863 while (tail != curr && (tail = prev) != NULL);
3865 /* But wait, there's more! Input sections up to stub_group_size
3866 bytes before the stub section can be handled by it too.
3867 Don't do this if we have a really large section after the
3868 stubs, as adding more stubs increases the chance that
3869 branches may not reach into the stub section. */
3870 if (!stubs_always_before_branch && !big_sec)
3874 && ((total += tail->output_offset - prev->output_offset)
3878 prev = PREV_SEC (tail);
3879 htab->stub_group[tail->id].link_sec = curr;
3885 while (list-- != htab->input_list);
3886 free (htab->input_list);
3890 /* Read in all local syms for all input bfds.
3891 Returns -1 on error, 0 otherwise. */
3894 get_local_syms (bfd *output_bfd ATTRIBUTE_UNUSED, bfd *input_bfd,
3895 struct bfd_link_info *info)
3897 unsigned int bfd_indx;
3898 Elf_Internal_Sym *local_syms, **all_local_syms;
3899 int stub_changed = 0;
3900 struct elf_metag_link_hash_table *htab = metag_link_hash_table (info);
3902 /* We want to read in symbol extension records only once. To do this
3903 we need to read in the local symbols in parallel and save them for
3904 later use; so hold pointers to the local symbols in an array. */
3905 bfd_size_type amt = sizeof (Elf_Internal_Sym *) * htab->bfd_count;
3906 all_local_syms = bfd_zmalloc (amt);
3907 htab->all_local_syms = all_local_syms;
3908 if (all_local_syms == NULL)
3911 /* Walk over all the input BFDs, swapping in local symbols. */
3914 input_bfd = input_bfd->link.next, bfd_indx++)
3916 Elf_Internal_Shdr *symtab_hdr;
3918 /* We'll need the symbol table in a second. */
3919 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3920 if (symtab_hdr->sh_info == 0)
3923 /* We need an array of the local symbols attached to the input bfd. */
3924 local_syms = (Elf_Internal_Sym *) symtab_hdr->contents;
3925 if (local_syms == NULL)
3927 local_syms = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
3928 symtab_hdr->sh_info, 0,
3930 /* Cache them for elf_link_input_bfd. */
3931 symtab_hdr->contents = (unsigned char *) local_syms;
3933 if (local_syms == NULL)
3936 all_local_syms[bfd_indx] = local_syms;
3939 return stub_changed;
3942 /* Determine and set the size of the stub section for a final link.
3944 The basic idea here is to examine all the relocations looking for
3945 PC-relative calls to a target that is unreachable with a "CALLR"
3948 /* See elf32-hppa.c and elf64-ppc.c. */
3951 elf_metag_size_stubs(bfd *output_bfd, bfd *stub_bfd,
3952 struct bfd_link_info *info,
3953 bfd_signed_vma group_size,
3954 asection * (*add_stub_section) (const char *, asection *),
3955 void (*layout_sections_again) (void))
3957 bfd_size_type stub_group_size;
3958 bfd_boolean stubs_always_before_branch;
3959 bfd_boolean stub_changed;
3960 struct elf_metag_link_hash_table *htab = metag_link_hash_table (info);
3962 /* Stash our params away. */
3963 htab->stub_bfd = stub_bfd;
3964 htab->add_stub_section = add_stub_section;
3965 htab->layout_sections_again = layout_sections_again;
3966 stubs_always_before_branch = group_size < 0;
3968 stub_group_size = -group_size;
3970 stub_group_size = group_size;
3971 if (stub_group_size == 1)
3973 /* Default values. */
3974 /* FIXME: not sure what these values should be */
3975 if (stubs_always_before_branch)
3977 stub_group_size = (1 << BRANCH_BITS);
3981 stub_group_size = (1 << BRANCH_BITS);
3985 group_sections (htab, stub_group_size, stubs_always_before_branch);
3987 switch (get_local_syms (output_bfd, info->input_bfds, info))
3990 if (htab->all_local_syms)
3991 goto error_ret_free_local;
3995 stub_changed = FALSE;
3999 stub_changed = TRUE;
4006 unsigned int bfd_indx;
4009 for (input_bfd = info->input_bfds, bfd_indx = 0;
4011 input_bfd = input_bfd->link.next, bfd_indx++)
4013 Elf_Internal_Shdr *symtab_hdr;
4015 Elf_Internal_Sym *local_syms;
4017 /* We'll need the symbol table in a second. */
4018 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
4019 if (symtab_hdr->sh_info == 0)
4022 local_syms = htab->all_local_syms[bfd_indx];
4024 /* Walk over each section attached to the input bfd. */
4025 for (section = input_bfd->sections;
4027 section = section->next)
4029 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
4031 /* If there aren't any relocs, then there's nothing more
4033 if ((section->flags & SEC_RELOC) == 0
4034 || section->reloc_count == 0)
4037 /* If this section is a link-once section that will be
4038 discarded, then don't create any stubs. */
4039 if (section->output_section == NULL
4040 || section->output_section->owner != output_bfd)
4043 /* Get the relocs. */
4045 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
4047 if (internal_relocs == NULL)
4048 goto error_ret_free_local;
4050 /* Now examine each relocation. */
4051 irela = internal_relocs;
4052 irelaend = irela + section->reloc_count;
4053 for (; irela < irelaend; irela++)
4055 unsigned int r_type, r_indx;
4056 enum elf_metag_stub_type stub_type;
4057 struct elf_metag_stub_hash_entry *hsh;
4060 bfd_vma destination;
4061 struct elf_metag_link_hash_entry *hh;
4063 const asection *id_sec;
4065 r_type = ELF32_R_TYPE (irela->r_info);
4066 r_indx = ELF32_R_SYM (irela->r_info);
4068 if (r_type >= (unsigned int) R_METAG_MAX)
4070 bfd_set_error (bfd_error_bad_value);
4071 error_ret_free_internal:
4072 if (elf_section_data (section)->relocs == NULL)
4073 free (internal_relocs);
4074 goto error_ret_free_local;
4077 /* Only look for stubs on CALLR and B instructions. */
4078 if (!(r_type == (unsigned int) R_METAG_RELBRANCH ||
4079 r_type == (unsigned int) R_METAG_RELBRANCH_PLT))
4082 /* Now determine the call target, its name, value,
4088 if (r_indx < symtab_hdr->sh_info)
4090 /* It's a local symbol. */
4091 Elf_Internal_Sym *sym;
4092 Elf_Internal_Shdr *hdr;
4095 sym = local_syms + r_indx;
4096 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
4097 sym_value = sym->st_value;
4098 shndx = sym->st_shndx;
4099 if (shndx < elf_numsections (input_bfd))
4101 hdr = elf_elfsections (input_bfd)[shndx];
4102 sym_sec = hdr->bfd_section;
4103 destination = (sym_value + irela->r_addend
4104 + sym_sec->output_offset
4105 + sym_sec->output_section->vma);
4110 /* It's an external symbol. */
4113 e_indx = r_indx - symtab_hdr->sh_info;
4114 hh = ((struct elf_metag_link_hash_entry *)
4115 elf_sym_hashes (input_bfd)[e_indx]);
4117 while (hh->eh.root.type == bfd_link_hash_indirect
4118 || hh->eh.root.type == bfd_link_hash_warning)
4119 hh = ((struct elf_metag_link_hash_entry *)
4120 hh->eh.root.u.i.link);
4122 if (hh->eh.root.type == bfd_link_hash_defined
4123 || hh->eh.root.type == bfd_link_hash_defweak)
4125 sym_sec = hh->eh.root.u.def.section;
4126 sym_value = hh->eh.root.u.def.value;
4127 if (hh->eh.plt.offset != (bfd_vma) -1
4128 && hh->eh.dynindx != -1
4129 && r_type == (unsigned int) R_METAG_RELBRANCH_PLT)
4131 sym_sec = htab->splt;
4132 sym_value = hh->eh.plt.offset;
4135 if (sym_sec->output_section != NULL)
4136 destination = (sym_value + irela->r_addend
4137 + sym_sec->output_offset
4138 + sym_sec->output_section->vma);
4142 else if (hh->eh.root.type == bfd_link_hash_undefweak)
4147 else if (hh->eh.root.type == bfd_link_hash_undefined)
4149 if (! (info->unresolved_syms_in_objects == RM_IGNORE
4150 && (ELF_ST_VISIBILITY (hh->eh.other)
4156 bfd_set_error (bfd_error_bad_value);
4157 goto error_ret_free_internal;
4161 /* Determine what (if any) linker stub is needed. */
4162 stub_type = metag_type_of_stub (section, irela, hh,
4164 if (stub_type == metag_stub_none)
4167 /* Support for grouping stub sections. */
4168 id_sec = htab->stub_group[section->id].link_sec;
4170 /* Get the name of this stub. */
4171 stub_name = metag_stub_name (id_sec, sym_sec, hh, irela);
4173 goto error_ret_free_internal;
4175 hsh = metag_stub_hash_lookup (&htab->bstab,
4180 /* The proper stub has already been created. */
4185 hsh = metag_add_stub (stub_name, section, htab);
4189 goto error_ret_free_internal;
4191 hsh->target_value = sym_value;
4192 hsh->target_section = sym_sec;
4193 hsh->stub_type = stub_type;
4195 hsh->addend = irela->r_addend;
4196 stub_changed = TRUE;
4199 /* We're done with the internal relocs, free them. */
4200 if (elf_section_data (section)->relocs == NULL)
4201 free (internal_relocs);
4208 /* OK, we've added some stubs. Find out the new size of the
4210 for (stub_sec = htab->stub_bfd->sections;
4212 stub_sec = stub_sec->next)
4215 bfd_hash_traverse (&htab->bstab, metag_size_one_stub, htab);
4217 /* Ask the linker to do its stuff. */
4218 (*htab->layout_sections_again) ();
4219 stub_changed = FALSE;
4222 free (htab->all_local_syms);
4225 error_ret_free_local:
4226 free (htab->all_local_syms);
4230 /* Build all the stubs associated with the current output file. The
4231 stubs are kept in a hash table attached to the main linker hash
4232 table. This function is called via metagelf_finish in the linker. */
4235 elf_metag_build_stubs (struct bfd_link_info *info)
4238 struct bfd_hash_table *table;
4239 struct elf_metag_link_hash_table *htab;
4241 htab = metag_link_hash_table (info);
4243 for (stub_sec = htab->stub_bfd->sections;
4245 stub_sec = stub_sec->next)
4249 /* Allocate memory to hold the linker stubs. */
4250 size = stub_sec->size;
4251 stub_sec->contents = bfd_zalloc (htab->stub_bfd, size);
4252 if (stub_sec->contents == NULL && size != 0)
4257 /* Build the stubs as directed by the stub hash table. */
4258 table = &htab->bstab;
4259 bfd_hash_traverse (table, metag_build_one_stub, info);
4264 /* Return TRUE if SYM represents a local label symbol. */
4267 elf_metag_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name)
4269 if (name[0] == '$' && name[1] == 'L')
4271 return _bfd_elf_is_local_label_name (abfd, name);
4274 /* Return address for Ith PLT stub in section PLT, for relocation REL
4275 or (bfd_vma) -1 if it should not be included. */
4278 elf_metag_plt_sym_val (bfd_vma i, const asection *plt,
4279 const arelent *rel ATTRIBUTE_UNUSED)
4281 return plt->vma + (i + 1) * PLT_ENTRY_SIZE;
4284 #define ELF_ARCH bfd_arch_metag
4285 #define ELF_TARGET_ID METAG_ELF_DATA
4286 #define ELF_MACHINE_CODE EM_METAG
4287 #define ELF_MINPAGESIZE 0x1000
4288 #define ELF_MAXPAGESIZE 0x4000
4289 #define ELF_COMMONPAGESIZE 0x1000
4291 #define TARGET_LITTLE_SYM metag_elf32_vec
4292 #define TARGET_LITTLE_NAME "elf32-metag"
4294 #define elf_symbol_leading_char '_'
4296 #define elf_info_to_howto_rel NULL
4297 #define elf_info_to_howto metag_info_to_howto_rela
4299 #define bfd_elf32_bfd_is_local_label_name elf_metag_is_local_label_name
4300 #define bfd_elf32_bfd_link_hash_table_create \
4301 elf_metag_link_hash_table_create
4302 #define elf_backend_relocate_section elf_metag_relocate_section
4303 #define elf_backend_gc_mark_hook elf_metag_gc_mark_hook
4304 #define elf_backend_gc_sweep_hook elf_metag_gc_sweep_hook
4305 #define elf_backend_check_relocs elf_metag_check_relocs
4306 #define elf_backend_create_dynamic_sections elf_metag_create_dynamic_sections
4307 #define elf_backend_adjust_dynamic_symbol elf_metag_adjust_dynamic_symbol
4308 #define elf_backend_finish_dynamic_symbol elf_metag_finish_dynamic_symbol
4309 #define elf_backend_finish_dynamic_sections elf_metag_finish_dynamic_sections
4310 #define elf_backend_size_dynamic_sections elf_metag_size_dynamic_sections
4311 #define elf_backend_omit_section_dynsym \
4312 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4313 #define elf_backend_post_process_headers elf_metag_post_process_headers
4314 #define elf_backend_reloc_type_class elf_metag_reloc_type_class
4315 #define elf_backend_copy_indirect_symbol elf_metag_copy_indirect_symbol
4316 #define elf_backend_plt_sym_val elf_metag_plt_sym_val
4318 #define elf_backend_can_gc_sections 1
4319 #define elf_backend_can_refcount 1
4320 #define elf_backend_got_header_size 12
4321 #define elf_backend_rela_normal 1
4322 #define elf_backend_want_got_sym 0
4323 #define elf_backend_want_plt_sym 0
4324 #define elf_backend_plt_readonly 1
4326 #define bfd_elf32_bfd_reloc_type_lookup metag_reloc_type_lookup
4327 #define bfd_elf32_bfd_reloc_name_lookup metag_reloc_name_lookup
4329 #include "elf32-target.h"